diff options
Diffstat (limited to 'vendor/github.com/tetratelabs/wazero/internal/engine/interpreter')
5 files changed, 11818 insertions, 0 deletions
diff --git a/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/compiler.go b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/compiler.go new file mode 100644 index 000000000..56dfac620 --- /dev/null +++ b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/compiler.go @@ -0,0 +1,3634 @@ +package interpreter + +import ( + "bytes" + "encoding/binary" + "fmt" + "math" + "strings" + + "github.com/tetratelabs/wazero/api" + "github.com/tetratelabs/wazero/internal/leb128" + "github.com/tetratelabs/wazero/internal/wasm" +) + +type controlFrameKind byte + +const ( + controlFrameKindBlockWithContinuationLabel controlFrameKind = iota + controlFrameKindBlockWithoutContinuationLabel + controlFrameKindFunction + controlFrameKindLoop + controlFrameKindIfWithElse + controlFrameKindIfWithoutElse +) + +type ( + controlFrame struct { + frameID uint32 + // originalStackLen holds the number of values on the stack + // when Start executing this control frame minus params for the block. + originalStackLenWithoutParam int + blockType *wasm.FunctionType + kind controlFrameKind + } + controlFrames struct{ frames []controlFrame } +) + +func (c *controlFrame) ensureContinuation() { + // Make sure that if the frame is block and doesn't have continuation, + // change the Kind so we can emit the continuation block + // later when we reach the End instruction of this frame. + if c.kind == controlFrameKindBlockWithoutContinuationLabel { + c.kind = controlFrameKindBlockWithContinuationLabel + } +} + +func (c *controlFrame) asLabel() label { + switch c.kind { + case controlFrameKindBlockWithContinuationLabel, + controlFrameKindBlockWithoutContinuationLabel: + return newLabel(labelKindContinuation, c.frameID) + case controlFrameKindLoop: + return newLabel(labelKindHeader, c.frameID) + case controlFrameKindFunction: + return newLabel(labelKindReturn, 0) + case controlFrameKindIfWithElse, + controlFrameKindIfWithoutElse: + return newLabel(labelKindContinuation, c.frameID) + } + panic(fmt.Sprintf("unreachable: a bug in interpreterir implementation: %v", c.kind)) +} + +func (c *controlFrames) functionFrame() *controlFrame { + // No need to check stack bound + // as we can assume that all the operations + // are valid thanks to validateFunction + // at module validation phase. + return &c.frames[0] +} + +func (c *controlFrames) get(n int) *controlFrame { + // No need to check stack bound + // as we can assume that all the operations + // are valid thanks to validateFunction + // at module validation phase. + return &c.frames[len(c.frames)-n-1] +} + +func (c *controlFrames) top() *controlFrame { + // No need to check stack bound + // as we can assume that all the operations + // are valid thanks to validateFunction + // at module validation phase. + return &c.frames[len(c.frames)-1] +} + +func (c *controlFrames) empty() bool { + return len(c.frames) == 0 +} + +func (c *controlFrames) pop() (frame *controlFrame) { + // No need to check stack bound + // as we can assume that all the operations + // are valid thanks to validateFunction + // at module validation phase. + frame = c.top() + c.frames = c.frames[:len(c.frames)-1] + return +} + +func (c *controlFrames) push(frame controlFrame) { + c.frames = append(c.frames, frame) +} + +func (c *compiler) initializeStack() { + // Reuse the existing slice. + c.localIndexToStackHeightInUint64 = c.localIndexToStackHeightInUint64[:0] + var current int + for _, lt := range c.sig.Params { + c.localIndexToStackHeightInUint64 = append(c.localIndexToStackHeightInUint64, current) + if lt == wasm.ValueTypeV128 { + current++ + } + current++ + } + + if c.callFrameStackSizeInUint64 > 0 { + // We reserve the stack slots for result values below the return call frame slots. + if diff := c.sig.ResultNumInUint64 - c.sig.ParamNumInUint64; diff > 0 { + current += diff + } + } + + // Non-func param locals Start after the return call frame. + current += c.callFrameStackSizeInUint64 + + for _, lt := range c.localTypes { + c.localIndexToStackHeightInUint64 = append(c.localIndexToStackHeightInUint64, current) + if lt == wasm.ValueTypeV128 { + current++ + } + current++ + } + + // Push function arguments. + for _, t := range c.sig.Params { + c.stackPush(wasmValueTypeTounsignedType(t)) + } + + if c.callFrameStackSizeInUint64 > 0 { + // Reserve the stack slots for results. + for i := 0; i < c.sig.ResultNumInUint64-c.sig.ParamNumInUint64; i++ { + c.stackPush(unsignedTypeI64) + } + + // Reserve the stack slots for call frame. + for i := 0; i < c.callFrameStackSizeInUint64; i++ { + c.stackPush(unsignedTypeI64) + } + } +} + +// compiler is in charge of lowering raw Wasm function body to get compilationResult. +// This is created per *wasm.Module and reused for all functions in it to reduce memory allocations. +type compiler struct { + module *wasm.Module + enabledFeatures api.CoreFeatures + callFrameStackSizeInUint64 int + stack []unsignedType + currentFrameID uint32 + controlFrames controlFrames + unreachableState struct { + on bool + depth int + } + pc, currentOpPC uint64 + result compilationResult + + // body holds the code for the function's body where Wasm instructions are stored. + body []byte + // sig is the function type of the target function. + sig *wasm.FunctionType + // localTypes holds the target function locals' value types except function params. + localTypes []wasm.ValueType + // localIndexToStackHeightInUint64 maps the local index (starting with function params) to the stack height + // where the local is places. This is the necessary mapping for functions who contain vector type locals. + localIndexToStackHeightInUint64 []int + + // types hold all the function types in the module where the targe function exists. + types []wasm.FunctionType + // funcs holds the type indexes for all declared functions in the module where the target function exists. + funcs []uint32 + // globals holds the global types for all declared globals in the module where the target function exists. + globals []wasm.GlobalType + + // needSourceOffset is true if this module requires DWARF based stack trace. + needSourceOffset bool + // bodyOffsetInCodeSection is the offset of the body of this function in the original Wasm binary's code section. + bodyOffsetInCodeSection uint64 + + ensureTermination bool + // Pre-allocated bytes.Reader to be used in various places. + br *bytes.Reader + funcTypeToSigs funcTypeToIRSignatures + + next int +} + +//lint:ignore U1000 for debugging only. +func (c *compiler) stackDump() string { + strs := make([]string, 0, len(c.stack)) + for _, s := range c.stack { + strs = append(strs, s.String()) + } + return "[" + strings.Join(strs, ", ") + "]" +} + +func (c *compiler) markUnreachable() { + c.unreachableState.on = true +} + +func (c *compiler) resetUnreachable() { + c.unreachableState.on = false +} + +// memoryType is the type of memory in a compiled module. +type memoryType byte + +const ( + // memoryTypeNone indicates there is no memory. + memoryTypeNone memoryType = iota + // memoryTypeStandard indicates there is a non-shared memory. + memoryTypeStandard + // memoryTypeShared indicates there is a shared memory. + memoryTypeShared +) + +type compilationResult struct { + // Operations holds interpreterir operations compiled from Wasm instructions in a Wasm function. + Operations []unionOperation + + // IROperationSourceOffsetsInWasmBinary is index-correlated with Operation and maps each operation to the corresponding source instruction's + // offset in the original WebAssembly binary. + // Non nil only when the given Wasm module has the DWARF section. + IROperationSourceOffsetsInWasmBinary []uint64 + + // LabelCallers maps label to the number of callers to that label. + // Here "callers" means that the call-sites which jumps to the label with br, br_if or br_table + // instructions. + // + // Note: zero possible and allowed in wasm. e.g. + // + // (block + // (br 0) + // (block i32.const 1111) + // ) + // + // This example the label corresponding to `(block i32.const 1111)` is never be reached at runtime because `br 0` exits the function before we reach there + LabelCallers map[label]uint32 + // UsesMemory is true if this function might use memory. + UsesMemory bool + + // The following fields are per-module values, not per-function. + + // Globals holds all the declarations of globals in the module from which this function is compiled. + Globals []wasm.GlobalType + // Functions holds all the declarations of function in the module from which this function is compiled, including itself. + Functions []wasm.Index + // Types holds all the types in the module from which this function is compiled. + Types []wasm.FunctionType + // Memory indicates the type of memory of the module. + Memory memoryType + // HasTable is true if the module from which this function is compiled has table declaration. + HasTable bool + // HasDataInstances is true if the module has data instances which might be used by memory.init or data.drop instructions. + HasDataInstances bool + // HasDataInstances is true if the module has element instances which might be used by table.init or elem.drop instructions. + HasElementInstances bool +} + +// newCompiler returns the new *compiler for the given parameters. +// Use compiler.Next function to get compilation result per function. +func newCompiler(enabledFeatures api.CoreFeatures, callFrameStackSizeInUint64 int, module *wasm.Module, ensureTermination bool) (*compiler, error) { + functions, globals, mem, tables, err := module.AllDeclarations() + if err != nil { + return nil, err + } + + hasTable, hasDataInstances, hasElementInstances := len(tables) > 0, + len(module.DataSection) > 0, len(module.ElementSection) > 0 + + var mt memoryType + switch { + case mem == nil: + mt = memoryTypeNone + case mem.IsShared: + mt = memoryTypeShared + default: + mt = memoryTypeStandard + } + + types := module.TypeSection + + c := &compiler{ + module: module, + enabledFeatures: enabledFeatures, + controlFrames: controlFrames{}, + callFrameStackSizeInUint64: callFrameStackSizeInUint64, + result: compilationResult{ + Globals: globals, + Functions: functions, + Types: types, + Memory: mt, + HasTable: hasTable, + HasDataInstances: hasDataInstances, + HasElementInstances: hasElementInstances, + LabelCallers: map[label]uint32{}, + }, + globals: globals, + funcs: functions, + types: types, + ensureTermination: ensureTermination, + br: bytes.NewReader(nil), + funcTypeToSigs: funcTypeToIRSignatures{ + indirectCalls: make([]*signature, len(types)), + directCalls: make([]*signature, len(types)), + wasmTypes: types, + }, + needSourceOffset: module.DWARFLines != nil, + } + return c, nil +} + +// Next returns the next compilationResult for this compiler. +func (c *compiler) Next() (*compilationResult, error) { + funcIndex := c.next + code := &c.module.CodeSection[funcIndex] + sig := &c.types[c.module.FunctionSection[funcIndex]] + + // Reset the previous result. + c.result.Operations = c.result.Operations[:0] + c.result.IROperationSourceOffsetsInWasmBinary = c.result.IROperationSourceOffsetsInWasmBinary[:0] + c.result.UsesMemory = false + // Clears the existing entries in LabelCallers. + for frameID := uint32(0); frameID <= c.currentFrameID; frameID++ { + for k := labelKind(0); k < labelKindNum; k++ { + delete(c.result.LabelCallers, newLabel(k, frameID)) + } + } + // Reset the previous states. + c.pc = 0 + c.currentOpPC = 0 + c.currentFrameID = 0 + c.unreachableState.on, c.unreachableState.depth = false, 0 + + if err := c.compile(sig, code.Body, code.LocalTypes, code.BodyOffsetInCodeSection); err != nil { + return nil, err + } + c.next++ + return &c.result, nil +} + +// Compile lowers given function instance into interpreterir operations +// so that the resulting operations can be consumed by the interpreter +// or the compiler compilation engine. +func (c *compiler) compile(sig *wasm.FunctionType, body []byte, localTypes []wasm.ValueType, bodyOffsetInCodeSection uint64) error { + // Set function specific fields. + c.body = body + c.localTypes = localTypes + c.sig = sig + c.bodyOffsetInCodeSection = bodyOffsetInCodeSection + + // Reuses the underlying slices. + c.stack = c.stack[:0] + c.controlFrames.frames = c.controlFrames.frames[:0] + + c.initializeStack() + + // Emit const expressions for locals. + // Note that here we don't take function arguments + // into account, meaning that callers must push + // arguments before entering into the function body. + for _, t := range c.localTypes { + c.emitDefaultValue(t) + } + + // Insert the function control frame. + c.controlFrames.push(controlFrame{ + frameID: c.nextFrameID(), + blockType: c.sig, + kind: controlFrameKindFunction, + }) + + // Now, enter the function body. + for !c.controlFrames.empty() && c.pc < uint64(len(c.body)) { + if err := c.handleInstruction(); err != nil { + return fmt.Errorf("handling instruction: %w", err) + } + } + return nil +} + +// Translate the current Wasm instruction to interpreterir's operations, +// and emit the results into c.results. +func (c *compiler) handleInstruction() error { + op := c.body[c.pc] + c.currentOpPC = c.pc + if false { + var instName string + if op == wasm.OpcodeVecPrefix { + instName = wasm.VectorInstructionName(c.body[c.pc+1]) + } else if op == wasm.OpcodeAtomicPrefix { + instName = wasm.AtomicInstructionName(c.body[c.pc+1]) + } else if op == wasm.OpcodeMiscPrefix { + instName = wasm.MiscInstructionName(c.body[c.pc+1]) + } else { + instName = wasm.InstructionName(op) + } + fmt.Printf("handling %s, unreachable_state(on=%v,depth=%d), stack=%v\n", + instName, c.unreachableState.on, c.unreachableState.depth, c.stack, + ) + } + + var peekValueType unsignedType + if len(c.stack) > 0 { + peekValueType = c.stackPeek() + } + + // Modify the stack according the current instruction. + // Note that some instructions will read "index" in + // applyToStack and advance c.pc inside the function. + index, err := c.applyToStack(op) + if err != nil { + return fmt.Errorf("apply stack failed for %s: %w", wasm.InstructionName(op), err) + } + // Now we handle each instruction, and + // emit the corresponding interpreterir operations to the results. +operatorSwitch: + switch op { + case wasm.OpcodeUnreachable: + c.emit(newOperationUnreachable()) + c.markUnreachable() + case wasm.OpcodeNop: + // Nop is noop! + case wasm.OpcodeBlock: + c.br.Reset(c.body[c.pc+1:]) + bt, num, err := wasm.DecodeBlockType(c.types, c.br, c.enabledFeatures) + if err != nil { + return fmt.Errorf("reading block type for block instruction: %w", err) + } + c.pc += num + + if c.unreachableState.on { + // If it is currently in unreachable, + // just remove the entire block. + c.unreachableState.depth++ + break operatorSwitch + } + + // Create a new frame -- entering this block. + frame := controlFrame{ + frameID: c.nextFrameID(), + originalStackLenWithoutParam: len(c.stack) - len(bt.Params), + kind: controlFrameKindBlockWithoutContinuationLabel, + blockType: bt, + } + c.controlFrames.push(frame) + + case wasm.OpcodeLoop: + c.br.Reset(c.body[c.pc+1:]) + bt, num, err := wasm.DecodeBlockType(c.types, c.br, c.enabledFeatures) + if err != nil { + return fmt.Errorf("reading block type for loop instruction: %w", err) + } + c.pc += num + + if c.unreachableState.on { + // If it is currently in unreachable, + // just remove the entire block. + c.unreachableState.depth++ + break operatorSwitch + } + + // Create a new frame -- entering loop. + frame := controlFrame{ + frameID: c.nextFrameID(), + originalStackLenWithoutParam: len(c.stack) - len(bt.Params), + kind: controlFrameKindLoop, + blockType: bt, + } + c.controlFrames.push(frame) + + // Prep labels for inside and the continuation of this loop. + loopLabel := newLabel(labelKindHeader, frame.frameID) + c.result.LabelCallers[loopLabel]++ + + // Emit the branch operation to enter inside the loop. + c.emit(newOperationBr(loopLabel)) + c.emit(newOperationLabel(loopLabel)) + + // Insert the exit code check on the loop header, which is the only necessary point in the function body + // to prevent infinite loop. + // + // Note that this is a little aggressive: this checks the exit code regardless the loop header is actually + // the loop. In other words, this checks even when no br/br_if/br_table instructions jumping to this loop + // exist. However, in reality, that shouldn't be an issue since such "noop" loop header will highly likely be + // optimized out by almost all guest language compilers which have the control flow optimization passes. + if c.ensureTermination { + c.emit(newOperationBuiltinFunctionCheckExitCode()) + } + case wasm.OpcodeIf: + c.br.Reset(c.body[c.pc+1:]) + bt, num, err := wasm.DecodeBlockType(c.types, c.br, c.enabledFeatures) + if err != nil { + return fmt.Errorf("reading block type for if instruction: %w", err) + } + c.pc += num + + if c.unreachableState.on { + // If it is currently in unreachable, + // just remove the entire block. + c.unreachableState.depth++ + break operatorSwitch + } + + // Create a new frame -- entering if. + frame := controlFrame{ + frameID: c.nextFrameID(), + originalStackLenWithoutParam: len(c.stack) - len(bt.Params), + // Note this will be set to controlFrameKindIfWithElse + // when else opcode found later. + kind: controlFrameKindIfWithoutElse, + blockType: bt, + } + c.controlFrames.push(frame) + + // Prep labels for if and else of this if. + thenLabel := newLabel(labelKindHeader, frame.frameID) + elseLabel := newLabel(labelKindElse, frame.frameID) + c.result.LabelCallers[thenLabel]++ + c.result.LabelCallers[elseLabel]++ + + // Emit the branch operation to enter the then block. + c.emit(newOperationBrIf(thenLabel, elseLabel, nopinclusiveRange)) + c.emit(newOperationLabel(thenLabel)) + case wasm.OpcodeElse: + frame := c.controlFrames.top() + if c.unreachableState.on && c.unreachableState.depth > 0 { + // If it is currently in unreachable, and the nested if, + // just remove the entire else block. + break operatorSwitch + } else if c.unreachableState.on { + // If it is currently in unreachable, and the non-nested if, + // reset the stack so we can correctly handle the else block. + top := c.controlFrames.top() + c.stack = c.stack[:top.originalStackLenWithoutParam] + top.kind = controlFrameKindIfWithElse + + // Re-push the parameters to the if block so that else block can use them. + for _, t := range frame.blockType.Params { + c.stackPush(wasmValueTypeTounsignedType(t)) + } + + // We are no longer unreachable in else frame, + // so emit the correct label, and reset the unreachable state. + elseLabel := newLabel(labelKindElse, frame.frameID) + c.resetUnreachable() + c.emit( + newOperationLabel(elseLabel), + ) + break operatorSwitch + } + + // Change the Kind of this If block, indicating that + // the if has else block. + frame.kind = controlFrameKindIfWithElse + + // We need to reset the stack so that + // the values pushed inside the then block + // do not affect the else block. + dropOp := newOperationDrop(c.getFrameDropRange(frame, false)) + + // Reset the stack manipulated by the then block, and re-push the block param types to the stack. + + c.stack = c.stack[:frame.originalStackLenWithoutParam] + for _, t := range frame.blockType.Params { + c.stackPush(wasmValueTypeTounsignedType(t)) + } + + // Prep labels for else and the continuation of this if block. + elseLabel := newLabel(labelKindElse, frame.frameID) + continuationLabel := newLabel(labelKindContinuation, frame.frameID) + c.result.LabelCallers[continuationLabel]++ + + // Emit the instructions for exiting the if loop, + // and then the initiation of else block. + c.emit(dropOp) + // Jump to the continuation of this block. + c.emit(newOperationBr(continuationLabel)) + // Initiate the else block. + c.emit(newOperationLabel(elseLabel)) + case wasm.OpcodeEnd: + if c.unreachableState.on && c.unreachableState.depth > 0 { + c.unreachableState.depth-- + break operatorSwitch + } else if c.unreachableState.on { + c.resetUnreachable() + + frame := c.controlFrames.pop() + if c.controlFrames.empty() { + return nil + } + + c.stack = c.stack[:frame.originalStackLenWithoutParam] + for _, t := range frame.blockType.Results { + c.stackPush(wasmValueTypeTounsignedType(t)) + } + + continuationLabel := newLabel(labelKindContinuation, frame.frameID) + if frame.kind == controlFrameKindIfWithoutElse { + // Emit the else label. + elseLabel := newLabel(labelKindElse, frame.frameID) + c.result.LabelCallers[continuationLabel]++ + c.emit(newOperationLabel(elseLabel)) + c.emit(newOperationBr(continuationLabel)) + c.emit(newOperationLabel(continuationLabel)) + } else { + c.emit( + newOperationLabel(continuationLabel), + ) + } + + break operatorSwitch + } + + frame := c.controlFrames.pop() + + // We need to reset the stack so that + // the values pushed inside the block. + dropOp := newOperationDrop(c.getFrameDropRange(frame, true)) + c.stack = c.stack[:frame.originalStackLenWithoutParam] + + // Push the result types onto the stack. + for _, t := range frame.blockType.Results { + c.stackPush(wasmValueTypeTounsignedType(t)) + } + + // Emit the instructions according to the Kind of the current control frame. + switch frame.kind { + case controlFrameKindFunction: + if !c.controlFrames.empty() { + // Should never happen. If so, there's a bug in the translation. + panic("bug: found more function control frames") + } + // Return from function. + c.emit(dropOp) + c.emit(newOperationBr(newLabel(labelKindReturn, 0))) + case controlFrameKindIfWithoutElse: + // This case we have to emit "empty" else label. + elseLabel := newLabel(labelKindElse, frame.frameID) + continuationLabel := newLabel(labelKindContinuation, frame.frameID) + c.result.LabelCallers[continuationLabel] += 2 + c.emit(dropOp) + c.emit(newOperationBr(continuationLabel)) + // Emit the else which soon branches into the continuation. + c.emit(newOperationLabel(elseLabel)) + c.emit(newOperationBr(continuationLabel)) + // Initiate the continuation. + c.emit(newOperationLabel(continuationLabel)) + case controlFrameKindBlockWithContinuationLabel, + controlFrameKindIfWithElse: + continuationLabel := newLabel(labelKindContinuation, frame.frameID) + c.result.LabelCallers[continuationLabel]++ + c.emit(dropOp) + c.emit(newOperationBr(continuationLabel)) + c.emit(newOperationLabel(continuationLabel)) + case controlFrameKindLoop, controlFrameKindBlockWithoutContinuationLabel: + c.emit( + dropOp, + ) + default: + // Should never happen. If so, there's a bug in the translation. + panic(fmt.Errorf("bug: invalid control frame Kind: 0x%x", frame.kind)) + } + + case wasm.OpcodeBr: + targetIndex, n, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("read the target for br_if: %w", err) + } + c.pc += n + + if c.unreachableState.on { + // If it is currently in unreachable, br is no-op. + break operatorSwitch + } + + targetFrame := c.controlFrames.get(int(targetIndex)) + targetFrame.ensureContinuation() + dropOp := newOperationDrop(c.getFrameDropRange(targetFrame, false)) + targetID := targetFrame.asLabel() + c.result.LabelCallers[targetID]++ + c.emit(dropOp) + c.emit(newOperationBr(targetID)) + // Br operation is stack-polymorphic, and mark the state as unreachable. + // That means subsequent instructions in the current control frame are "unreachable" + // and can be safely removed. + c.markUnreachable() + case wasm.OpcodeBrIf: + targetIndex, n, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("read the target for br_if: %w", err) + } + c.pc += n + + if c.unreachableState.on { + // If it is currently in unreachable, br-if is no-op. + break operatorSwitch + } + + targetFrame := c.controlFrames.get(int(targetIndex)) + targetFrame.ensureContinuation() + drop := c.getFrameDropRange(targetFrame, false) + target := targetFrame.asLabel() + c.result.LabelCallers[target]++ + + continuationLabel := newLabel(labelKindHeader, c.nextFrameID()) + c.result.LabelCallers[continuationLabel]++ + c.emit(newOperationBrIf(target, continuationLabel, drop)) + // Start emitting else block operations. + c.emit(newOperationLabel(continuationLabel)) + case wasm.OpcodeBrTable: + c.br.Reset(c.body[c.pc+1:]) + r := c.br + numTargets, n, err := leb128.DecodeUint32(r) + if err != nil { + return fmt.Errorf("error reading number of targets in br_table: %w", err) + } + c.pc += n + + if c.unreachableState.on { + // If it is currently in unreachable, br_table is no-op. + // But before proceeding to the next instruction, we must advance the pc + // according to the number of br_table targets. + for i := uint32(0); i <= numTargets; i++ { // inclusive as we also need to read the index of default target. + _, n, err := leb128.DecodeUint32(r) + if err != nil { + return fmt.Errorf("error reading target %d in br_table: %w", i, err) + } + c.pc += n + } + break operatorSwitch + } + + // Read the branch targets. + s := numTargets * 2 + targetLabels := make([]uint64, 2+s) // (label, inclusiveRange) * (default+numTargets) + for i := uint32(0); i < s; i += 2 { + l, n, err := leb128.DecodeUint32(r) + if err != nil { + return fmt.Errorf("error reading target %d in br_table: %w", i, err) + } + c.pc += n + targetFrame := c.controlFrames.get(int(l)) + targetFrame.ensureContinuation() + drop := c.getFrameDropRange(targetFrame, false) + targetLabel := targetFrame.asLabel() + targetLabels[i] = uint64(targetLabel) + targetLabels[i+1] = drop.AsU64() + c.result.LabelCallers[targetLabel]++ + } + + // Prep default target control frame. + l, n, err := leb128.DecodeUint32(r) + if err != nil { + return fmt.Errorf("error reading default target of br_table: %w", err) + } + c.pc += n + defaultTargetFrame := c.controlFrames.get(int(l)) + defaultTargetFrame.ensureContinuation() + defaultTargetDrop := c.getFrameDropRange(defaultTargetFrame, false) + defaultLabel := defaultTargetFrame.asLabel() + c.result.LabelCallers[defaultLabel]++ + targetLabels[s] = uint64(defaultLabel) + targetLabels[s+1] = defaultTargetDrop.AsU64() + c.emit(newOperationBrTable(targetLabels)) + + // br_table operation is stack-polymorphic, and mark the state as unreachable. + // That means subsequent instructions in the current control frame are "unreachable" + // and can be safely removed. + c.markUnreachable() + case wasm.OpcodeReturn: + functionFrame := c.controlFrames.functionFrame() + dropOp := newOperationDrop(c.getFrameDropRange(functionFrame, false)) + + // Cleanup the stack and then jmp to function frame's continuation (meaning return). + c.emit(dropOp) + c.emit(newOperationBr(functionFrame.asLabel())) + + // Return operation is stack-polymorphic, and mark the state as unreachable. + // That means subsequent instructions in the current control frame are "unreachable" + // and can be safely removed. + c.markUnreachable() + case wasm.OpcodeCall: + c.emit( + newOperationCall(index), + ) + case wasm.OpcodeCallIndirect: + typeIndex := index + tableIndex, n, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("read target for br_table: %w", err) + } + c.pc += n + c.emit( + newOperationCallIndirect(typeIndex, tableIndex), + ) + case wasm.OpcodeDrop: + r := inclusiveRange{Start: 0, End: 0} + if peekValueType == unsignedTypeV128 { + // inclusiveRange is the range in uint64 representation, so dropping a vector value on top + // should be translated as drop [0..1] inclusively. + r.End++ + } + c.emit(newOperationDrop(r)) + case wasm.OpcodeSelect: + // If it is on the unreachable state, ignore the instruction. + if c.unreachableState.on { + break operatorSwitch + } + isTargetVector := c.stackPeek() == unsignedTypeV128 + c.emit( + newOperationSelect(isTargetVector), + ) + case wasm.OpcodeTypedSelect: + // Skips two bytes: vector size fixed to 1, and the value type for select. + c.pc += 2 + // If it is on the unreachable state, ignore the instruction. + if c.unreachableState.on { + break operatorSwitch + } + // Typed select is semantically equivalent to select at runtime. + isTargetVector := c.stackPeek() == unsignedTypeV128 + c.emit( + newOperationSelect(isTargetVector), + ) + case wasm.OpcodeLocalGet: + depth := c.localDepth(index) + if isVector := c.localType(index) == wasm.ValueTypeV128; !isVector { + c.emit( + // -1 because we already manipulated the stack before + // called localDepth ^^. + newOperationPick(depth-1, isVector), + ) + } else { + c.emit( + // -2 because we already manipulated the stack before + // called localDepth ^^. + newOperationPick(depth-2, isVector), + ) + } + case wasm.OpcodeLocalSet: + depth := c.localDepth(index) + + isVector := c.localType(index) == wasm.ValueTypeV128 + if isVector { + c.emit( + // +2 because we already popped the operands for this operation from the c.stack before + // called localDepth ^^, + newOperationSet(depth+2, isVector), + ) + } else { + c.emit( + // +1 because we already popped the operands for this operation from the c.stack before + // called localDepth ^^, + newOperationSet(depth+1, isVector), + ) + } + case wasm.OpcodeLocalTee: + depth := c.localDepth(index) + isVector := c.localType(index) == wasm.ValueTypeV128 + if isVector { + c.emit(newOperationPick(1, isVector)) + c.emit(newOperationSet(depth+2, isVector)) + } else { + c.emit( + newOperationPick(0, isVector)) + c.emit(newOperationSet(depth+1, isVector)) + } + case wasm.OpcodeGlobalGet: + c.emit( + newOperationGlobalGet(index), + ) + case wasm.OpcodeGlobalSet: + c.emit( + newOperationGlobalSet(index), + ) + case wasm.OpcodeI32Load: + imm, err := c.readMemoryArg(wasm.OpcodeI32LoadName) + if err != nil { + return err + } + c.emit(newOperationLoad(unsignedTypeI32, imm)) + case wasm.OpcodeI64Load: + imm, err := c.readMemoryArg(wasm.OpcodeI64LoadName) + if err != nil { + return err + } + c.emit(newOperationLoad(unsignedTypeI64, imm)) + case wasm.OpcodeF32Load: + imm, err := c.readMemoryArg(wasm.OpcodeF32LoadName) + if err != nil { + return err + } + c.emit(newOperationLoad(unsignedTypeF32, imm)) + case wasm.OpcodeF64Load: + imm, err := c.readMemoryArg(wasm.OpcodeF64LoadName) + if err != nil { + return err + } + c.emit(newOperationLoad(unsignedTypeF64, imm)) + case wasm.OpcodeI32Load8S: + imm, err := c.readMemoryArg(wasm.OpcodeI32Load8SName) + if err != nil { + return err + } + c.emit(newOperationLoad8(signedInt32, imm)) + case wasm.OpcodeI32Load8U: + imm, err := c.readMemoryArg(wasm.OpcodeI32Load8UName) + if err != nil { + return err + } + c.emit(newOperationLoad8(signedUint32, imm)) + case wasm.OpcodeI32Load16S: + imm, err := c.readMemoryArg(wasm.OpcodeI32Load16SName) + if err != nil { + return err + } + c.emit(newOperationLoad16(signedInt32, imm)) + case wasm.OpcodeI32Load16U: + imm, err := c.readMemoryArg(wasm.OpcodeI32Load16UName) + if err != nil { + return err + } + c.emit(newOperationLoad16(signedUint32, imm)) + case wasm.OpcodeI64Load8S: + imm, err := c.readMemoryArg(wasm.OpcodeI64Load8SName) + if err != nil { + return err + } + c.emit(newOperationLoad8(signedInt64, imm)) + case wasm.OpcodeI64Load8U: + imm, err := c.readMemoryArg(wasm.OpcodeI64Load8UName) + if err != nil { + return err + } + c.emit(newOperationLoad8(signedUint64, imm)) + case wasm.OpcodeI64Load16S: + imm, err := c.readMemoryArg(wasm.OpcodeI64Load16SName) + if err != nil { + return err + } + c.emit(newOperationLoad16(signedInt64, imm)) + case wasm.OpcodeI64Load16U: + imm, err := c.readMemoryArg(wasm.OpcodeI64Load16UName) + if err != nil { + return err + } + c.emit(newOperationLoad16(signedUint64, imm)) + case wasm.OpcodeI64Load32S: + imm, err := c.readMemoryArg(wasm.OpcodeI64Load32SName) + if err != nil { + return err + } + c.emit(newOperationLoad32(true, imm)) + case wasm.OpcodeI64Load32U: + imm, err := c.readMemoryArg(wasm.OpcodeI64Load32UName) + if err != nil { + return err + } + c.emit(newOperationLoad32(false, imm)) + case wasm.OpcodeI32Store: + imm, err := c.readMemoryArg(wasm.OpcodeI32StoreName) + if err != nil { + return err + } + c.emit( + newOperationStore(unsignedTypeI32, imm), + ) + case wasm.OpcodeI64Store: + imm, err := c.readMemoryArg(wasm.OpcodeI64StoreName) + if err != nil { + return err + } + c.emit( + newOperationStore(unsignedTypeI64, imm), + ) + case wasm.OpcodeF32Store: + imm, err := c.readMemoryArg(wasm.OpcodeF32StoreName) + if err != nil { + return err + } + c.emit( + newOperationStore(unsignedTypeF32, imm), + ) + case wasm.OpcodeF64Store: + imm, err := c.readMemoryArg(wasm.OpcodeF64StoreName) + if err != nil { + return err + } + c.emit( + newOperationStore(unsignedTypeF64, imm), + ) + case wasm.OpcodeI32Store8: + imm, err := c.readMemoryArg(wasm.OpcodeI32Store8Name) + if err != nil { + return err + } + c.emit( + newOperationStore8(imm), + ) + case wasm.OpcodeI32Store16: + imm, err := c.readMemoryArg(wasm.OpcodeI32Store16Name) + if err != nil { + return err + } + c.emit( + newOperationStore16(imm), + ) + case wasm.OpcodeI64Store8: + imm, err := c.readMemoryArg(wasm.OpcodeI64Store8Name) + if err != nil { + return err + } + c.emit( + newOperationStore8(imm), + ) + case wasm.OpcodeI64Store16: + imm, err := c.readMemoryArg(wasm.OpcodeI64Store16Name) + if err != nil { + return err + } + c.emit( + newOperationStore16(imm), + ) + case wasm.OpcodeI64Store32: + imm, err := c.readMemoryArg(wasm.OpcodeI64Store32Name) + if err != nil { + return err + } + c.emit( + newOperationStore32(imm), + ) + case wasm.OpcodeMemorySize: + c.result.UsesMemory = true + c.pc++ // Skip the reserved one byte. + c.emit( + newOperationMemorySize(), + ) + case wasm.OpcodeMemoryGrow: + c.result.UsesMemory = true + c.pc++ // Skip the reserved one byte. + c.emit( + newOperationMemoryGrow(), + ) + case wasm.OpcodeI32Const: + val, num, err := leb128.LoadInt32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationConstI32(uint32(val)), + ) + case wasm.OpcodeI64Const: + val, num, err := leb128.LoadInt64(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i64.const value: %v", err) + } + c.pc += num + c.emit( + newOperationConstI64(uint64(val)), + ) + case wasm.OpcodeF32Const: + v := math.Float32frombits(binary.LittleEndian.Uint32(c.body[c.pc+1:])) + c.pc += 4 + c.emit( + newOperationConstF32(v), + ) + case wasm.OpcodeF64Const: + v := math.Float64frombits(binary.LittleEndian.Uint64(c.body[c.pc+1:])) + c.pc += 8 + c.emit( + newOperationConstF64(v), + ) + case wasm.OpcodeI32Eqz: + c.emit( + newOperationEqz(unsignedInt32), + ) + case wasm.OpcodeI32Eq: + c.emit( + newOperationEq(unsignedTypeI32), + ) + case wasm.OpcodeI32Ne: + c.emit( + newOperationNe(unsignedTypeI32), + ) + case wasm.OpcodeI32LtS: + c.emit( + newOperationLt(signedTypeInt32), + ) + case wasm.OpcodeI32LtU: + c.emit( + newOperationLt(signedTypeUint32), + ) + case wasm.OpcodeI32GtS: + c.emit( + newOperationGt(signedTypeInt32), + ) + case wasm.OpcodeI32GtU: + c.emit( + newOperationGt(signedTypeUint32), + ) + case wasm.OpcodeI32LeS: + c.emit( + newOperationLe(signedTypeInt32), + ) + case wasm.OpcodeI32LeU: + c.emit( + newOperationLe(signedTypeUint32), + ) + case wasm.OpcodeI32GeS: + c.emit( + newOperationGe(signedTypeInt32), + ) + case wasm.OpcodeI32GeU: + c.emit( + newOperationGe(signedTypeUint32), + ) + case wasm.OpcodeI64Eqz: + c.emit( + newOperationEqz(unsignedInt64), + ) + case wasm.OpcodeI64Eq: + c.emit( + newOperationEq(unsignedTypeI64), + ) + case wasm.OpcodeI64Ne: + c.emit( + newOperationNe(unsignedTypeI64), + ) + case wasm.OpcodeI64LtS: + c.emit( + newOperationLt(signedTypeInt64), + ) + case wasm.OpcodeI64LtU: + c.emit( + newOperationLt(signedTypeUint64), + ) + case wasm.OpcodeI64GtS: + c.emit( + newOperationGt(signedTypeInt64), + ) + case wasm.OpcodeI64GtU: + c.emit( + newOperationGt(signedTypeUint64), + ) + case wasm.OpcodeI64LeS: + c.emit( + newOperationLe(signedTypeInt64), + ) + case wasm.OpcodeI64LeU: + c.emit( + newOperationLe(signedTypeUint64), + ) + case wasm.OpcodeI64GeS: + c.emit( + newOperationGe(signedTypeInt64), + ) + case wasm.OpcodeI64GeU: + c.emit( + newOperationGe(signedTypeUint64), + ) + case wasm.OpcodeF32Eq: + c.emit( + newOperationEq(unsignedTypeF32), + ) + case wasm.OpcodeF32Ne: + c.emit( + newOperationNe(unsignedTypeF32), + ) + case wasm.OpcodeF32Lt: + c.emit( + newOperationLt(signedTypeFloat32), + ) + case wasm.OpcodeF32Gt: + c.emit( + newOperationGt(signedTypeFloat32), + ) + case wasm.OpcodeF32Le: + c.emit( + newOperationLe(signedTypeFloat32), + ) + case wasm.OpcodeF32Ge: + c.emit( + newOperationGe(signedTypeFloat32), + ) + case wasm.OpcodeF64Eq: + c.emit( + newOperationEq(unsignedTypeF64), + ) + case wasm.OpcodeF64Ne: + c.emit( + newOperationNe(unsignedTypeF64), + ) + case wasm.OpcodeF64Lt: + c.emit( + newOperationLt(signedTypeFloat64), + ) + case wasm.OpcodeF64Gt: + c.emit( + newOperationGt(signedTypeFloat64), + ) + case wasm.OpcodeF64Le: + c.emit( + newOperationLe(signedTypeFloat64), + ) + case wasm.OpcodeF64Ge: + c.emit( + newOperationGe(signedTypeFloat64), + ) + case wasm.OpcodeI32Clz: + c.emit( + newOperationClz(unsignedInt32), + ) + case wasm.OpcodeI32Ctz: + c.emit( + newOperationCtz(unsignedInt32), + ) + case wasm.OpcodeI32Popcnt: + c.emit( + newOperationPopcnt(unsignedInt32), + ) + case wasm.OpcodeI32Add: + c.emit( + newOperationAdd(unsignedTypeI32), + ) + case wasm.OpcodeI32Sub: + c.emit( + newOperationSub(unsignedTypeI32), + ) + case wasm.OpcodeI32Mul: + c.emit( + newOperationMul(unsignedTypeI32), + ) + case wasm.OpcodeI32DivS: + c.emit( + newOperationDiv(signedTypeInt32), + ) + case wasm.OpcodeI32DivU: + c.emit( + newOperationDiv(signedTypeUint32), + ) + case wasm.OpcodeI32RemS: + c.emit( + newOperationRem(signedInt32), + ) + case wasm.OpcodeI32RemU: + c.emit( + newOperationRem(signedUint32), + ) + case wasm.OpcodeI32And: + c.emit( + newOperationAnd(unsignedInt32), + ) + case wasm.OpcodeI32Or: + c.emit( + newOperationOr(unsignedInt32), + ) + case wasm.OpcodeI32Xor: + c.emit( + newOperationXor(unsignedInt64), + ) + case wasm.OpcodeI32Shl: + c.emit( + newOperationShl(unsignedInt32), + ) + case wasm.OpcodeI32ShrS: + c.emit( + newOperationShr(signedInt32), + ) + case wasm.OpcodeI32ShrU: + c.emit( + newOperationShr(signedUint32), + ) + case wasm.OpcodeI32Rotl: + c.emit( + newOperationRotl(unsignedInt32), + ) + case wasm.OpcodeI32Rotr: + c.emit( + newOperationRotr(unsignedInt32), + ) + case wasm.OpcodeI64Clz: + c.emit( + newOperationClz(unsignedInt64), + ) + case wasm.OpcodeI64Ctz: + c.emit( + newOperationCtz(unsignedInt64), + ) + case wasm.OpcodeI64Popcnt: + c.emit( + newOperationPopcnt(unsignedInt64), + ) + case wasm.OpcodeI64Add: + c.emit( + newOperationAdd(unsignedTypeI64), + ) + case wasm.OpcodeI64Sub: + c.emit( + newOperationSub(unsignedTypeI64), + ) + case wasm.OpcodeI64Mul: + c.emit( + newOperationMul(unsignedTypeI64), + ) + case wasm.OpcodeI64DivS: + c.emit( + newOperationDiv(signedTypeInt64), + ) + case wasm.OpcodeI64DivU: + c.emit( + newOperationDiv(signedTypeUint64), + ) + case wasm.OpcodeI64RemS: + c.emit( + newOperationRem(signedInt64), + ) + case wasm.OpcodeI64RemU: + c.emit( + newOperationRem(signedUint64), + ) + case wasm.OpcodeI64And: + c.emit( + newOperationAnd(unsignedInt64), + ) + case wasm.OpcodeI64Or: + c.emit( + newOperationOr(unsignedInt64), + ) + case wasm.OpcodeI64Xor: + c.emit( + newOperationXor(unsignedInt64), + ) + case wasm.OpcodeI64Shl: + c.emit( + newOperationShl(unsignedInt64), + ) + case wasm.OpcodeI64ShrS: + c.emit( + newOperationShr(signedInt64), + ) + case wasm.OpcodeI64ShrU: + c.emit( + newOperationShr(signedUint64), + ) + case wasm.OpcodeI64Rotl: + c.emit( + newOperationRotl(unsignedInt64), + ) + case wasm.OpcodeI64Rotr: + c.emit( + newOperationRotr(unsignedInt64), + ) + case wasm.OpcodeF32Abs: + c.emit( + newOperationAbs(f32), + ) + case wasm.OpcodeF32Neg: + c.emit( + newOperationNeg(f32), + ) + case wasm.OpcodeF32Ceil: + c.emit( + newOperationCeil(f32), + ) + case wasm.OpcodeF32Floor: + c.emit( + newOperationFloor(f32), + ) + case wasm.OpcodeF32Trunc: + c.emit( + newOperationTrunc(f32), + ) + case wasm.OpcodeF32Nearest: + c.emit( + newOperationNearest(f32), + ) + case wasm.OpcodeF32Sqrt: + c.emit( + newOperationSqrt(f32), + ) + case wasm.OpcodeF32Add: + c.emit( + newOperationAdd(unsignedTypeF32), + ) + case wasm.OpcodeF32Sub: + c.emit( + newOperationSub(unsignedTypeF32), + ) + case wasm.OpcodeF32Mul: + c.emit( + newOperationMul(unsignedTypeF32), + ) + case wasm.OpcodeF32Div: + c.emit( + newOperationDiv(signedTypeFloat32), + ) + case wasm.OpcodeF32Min: + c.emit( + newOperationMin(f32), + ) + case wasm.OpcodeF32Max: + c.emit( + newOperationMax(f32), + ) + case wasm.OpcodeF32Copysign: + c.emit( + newOperationCopysign(f32), + ) + case wasm.OpcodeF64Abs: + c.emit( + newOperationAbs(f64), + ) + case wasm.OpcodeF64Neg: + c.emit( + newOperationNeg(f64), + ) + case wasm.OpcodeF64Ceil: + c.emit( + newOperationCeil(f64), + ) + case wasm.OpcodeF64Floor: + c.emit( + newOperationFloor(f64), + ) + case wasm.OpcodeF64Trunc: + c.emit( + newOperationTrunc(f64), + ) + case wasm.OpcodeF64Nearest: + c.emit( + newOperationNearest(f64), + ) + case wasm.OpcodeF64Sqrt: + c.emit( + newOperationSqrt(f64), + ) + case wasm.OpcodeF64Add: + c.emit( + newOperationAdd(unsignedTypeF64), + ) + case wasm.OpcodeF64Sub: + c.emit( + newOperationSub(unsignedTypeF64), + ) + case wasm.OpcodeF64Mul: + c.emit( + newOperationMul(unsignedTypeF64), + ) + case wasm.OpcodeF64Div: + c.emit( + newOperationDiv(signedTypeFloat64), + ) + case wasm.OpcodeF64Min: + c.emit( + newOperationMin(f64), + ) + case wasm.OpcodeF64Max: + c.emit( + newOperationMax(f64), + ) + case wasm.OpcodeF64Copysign: + c.emit( + newOperationCopysign(f64), + ) + case wasm.OpcodeI32WrapI64: + c.emit( + newOperationI32WrapFromI64(), + ) + case wasm.OpcodeI32TruncF32S: + c.emit( + newOperationITruncFromF(f32, signedInt32, false), + ) + case wasm.OpcodeI32TruncF32U: + c.emit( + newOperationITruncFromF(f32, signedUint32, false), + ) + case wasm.OpcodeI32TruncF64S: + c.emit( + newOperationITruncFromF(f64, signedInt32, false), + ) + case wasm.OpcodeI32TruncF64U: + c.emit( + newOperationITruncFromF(f64, signedUint32, false), + ) + case wasm.OpcodeI64ExtendI32S: + c.emit( + newOperationExtend(true), + ) + case wasm.OpcodeI64ExtendI32U: + c.emit( + newOperationExtend(false), + ) + case wasm.OpcodeI64TruncF32S: + c.emit( + newOperationITruncFromF(f32, signedInt64, false), + ) + case wasm.OpcodeI64TruncF32U: + c.emit( + newOperationITruncFromF(f32, signedUint64, false), + ) + case wasm.OpcodeI64TruncF64S: + c.emit( + newOperationITruncFromF(f64, signedInt64, false), + ) + case wasm.OpcodeI64TruncF64U: + c.emit( + newOperationITruncFromF(f64, signedUint64, false), + ) + case wasm.OpcodeF32ConvertI32S: + c.emit( + newOperationFConvertFromI(signedInt32, f32), + ) + case wasm.OpcodeF32ConvertI32U: + c.emit( + newOperationFConvertFromI(signedUint32, f32), + ) + case wasm.OpcodeF32ConvertI64S: + c.emit( + newOperationFConvertFromI(signedInt64, f32), + ) + case wasm.OpcodeF32ConvertI64U: + c.emit( + newOperationFConvertFromI(signedUint64, f32), + ) + case wasm.OpcodeF32DemoteF64: + c.emit( + newOperationF32DemoteFromF64(), + ) + case wasm.OpcodeF64ConvertI32S: + c.emit( + newOperationFConvertFromI(signedInt32, f64), + ) + case wasm.OpcodeF64ConvertI32U: + c.emit( + newOperationFConvertFromI(signedUint32, f64), + ) + case wasm.OpcodeF64ConvertI64S: + c.emit( + newOperationFConvertFromI(signedInt64, f64), + ) + case wasm.OpcodeF64ConvertI64U: + c.emit( + newOperationFConvertFromI(signedUint64, f64), + ) + case wasm.OpcodeF64PromoteF32: + c.emit( + newOperationF64PromoteFromF32(), + ) + case wasm.OpcodeI32ReinterpretF32: + c.emit( + newOperationI32ReinterpretFromF32(), + ) + case wasm.OpcodeI64ReinterpretF64: + c.emit( + newOperationI64ReinterpretFromF64(), + ) + case wasm.OpcodeF32ReinterpretI32: + c.emit( + newOperationF32ReinterpretFromI32(), + ) + case wasm.OpcodeF64ReinterpretI64: + c.emit( + newOperationF64ReinterpretFromI64(), + ) + case wasm.OpcodeI32Extend8S: + c.emit( + newOperationSignExtend32From8(), + ) + case wasm.OpcodeI32Extend16S: + c.emit( + newOperationSignExtend32From16(), + ) + case wasm.OpcodeI64Extend8S: + c.emit( + newOperationSignExtend64From8(), + ) + case wasm.OpcodeI64Extend16S: + c.emit( + newOperationSignExtend64From16(), + ) + case wasm.OpcodeI64Extend32S: + c.emit( + newOperationSignExtend64From32(), + ) + case wasm.OpcodeRefFunc: + c.pc++ + index, num, err := leb128.LoadUint32(c.body[c.pc:]) + if err != nil { + return fmt.Errorf("failed to read function index for ref.func: %v", err) + } + c.pc += num - 1 + c.emit( + newOperationRefFunc(index), + ) + case wasm.OpcodeRefNull: + c.pc++ // Skip the type of reftype as every ref value is opaque pointer. + c.emit( + newOperationConstI64(0), + ) + case wasm.OpcodeRefIsNull: + // Simply compare the opaque pointer (i64) with zero. + c.emit( + newOperationEqz(unsignedInt64), + ) + case wasm.OpcodeTableGet: + c.pc++ + tableIndex, num, err := leb128.LoadUint32(c.body[c.pc:]) + if err != nil { + return fmt.Errorf("failed to read function index for table.get: %v", err) + } + c.pc += num - 1 + c.emit( + newOperationTableGet(tableIndex), + ) + case wasm.OpcodeTableSet: + c.pc++ + tableIndex, num, err := leb128.LoadUint32(c.body[c.pc:]) + if err != nil { + return fmt.Errorf("failed to read function index for table.set: %v", err) + } + c.pc += num - 1 + c.emit( + newOperationTableSet(tableIndex), + ) + case wasm.OpcodeMiscPrefix: + c.pc++ + // A misc opcode is encoded as an unsigned variable 32-bit integer. + miscOp, num, err := leb128.LoadUint32(c.body[c.pc:]) + if err != nil { + return fmt.Errorf("failed to read misc opcode: %v", err) + } + c.pc += num - 1 + switch byte(miscOp) { + case wasm.OpcodeMiscI32TruncSatF32S: + c.emit( + newOperationITruncFromF(f32, signedInt32, true), + ) + case wasm.OpcodeMiscI32TruncSatF32U: + c.emit( + newOperationITruncFromF(f32, signedUint32, true), + ) + case wasm.OpcodeMiscI32TruncSatF64S: + c.emit( + newOperationITruncFromF(f64, signedInt32, true), + ) + case wasm.OpcodeMiscI32TruncSatF64U: + c.emit( + newOperationITruncFromF(f64, signedUint32, true), + ) + case wasm.OpcodeMiscI64TruncSatF32S: + c.emit( + newOperationITruncFromF(f32, signedInt64, true), + ) + case wasm.OpcodeMiscI64TruncSatF32U: + c.emit( + newOperationITruncFromF(f32, signedUint64, true), + ) + case wasm.OpcodeMiscI64TruncSatF64S: + c.emit( + newOperationITruncFromF(f64, signedInt64, true), + ) + case wasm.OpcodeMiscI64TruncSatF64U: + c.emit( + newOperationITruncFromF(f64, signedUint64, true), + ) + case wasm.OpcodeMiscMemoryInit: + c.result.UsesMemory = true + dataIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + 1 // +1 to skip the memory index which is fixed to zero. + c.emit( + newOperationMemoryInit(dataIndex), + ) + case wasm.OpcodeMiscDataDrop: + dataIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationDataDrop(dataIndex), + ) + case wasm.OpcodeMiscMemoryCopy: + c.result.UsesMemory = true + c.pc += 2 // +2 to skip two memory indexes which are fixed to zero. + c.emit( + newOperationMemoryCopy(), + ) + case wasm.OpcodeMiscMemoryFill: + c.result.UsesMemory = true + c.pc += 1 // +1 to skip the memory index which is fixed to zero. + c.emit( + newOperationMemoryFill(), + ) + case wasm.OpcodeMiscTableInit: + elemIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + // Read table index which is fixed to zero currently. + tableIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationTableInit(elemIndex, tableIndex), + ) + case wasm.OpcodeMiscElemDrop: + elemIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationElemDrop(elemIndex), + ) + case wasm.OpcodeMiscTableCopy: + // Read the source table inde.g. + dst, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + // Read the destination table inde.g. + src, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationTableCopy(src, dst), + ) + case wasm.OpcodeMiscTableGrow: + // Read the source table inde.g. + tableIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationTableGrow(tableIndex), + ) + case wasm.OpcodeMiscTableSize: + // Read the source table inde.g. + tableIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationTableSize(tableIndex), + ) + case wasm.OpcodeMiscTableFill: + // Read the source table index. + tableIndex, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return fmt.Errorf("reading i32.const value: %v", err) + } + c.pc += num + c.emit( + newOperationTableFill(tableIndex), + ) + default: + return fmt.Errorf("unsupported misc instruction in interpreterir: 0x%x", op) + } + case wasm.OpcodeVecPrefix: + c.pc++ + switch vecOp := c.body[c.pc]; vecOp { + case wasm.OpcodeVecV128Const: + c.pc++ + lo := binary.LittleEndian.Uint64(c.body[c.pc : c.pc+8]) + c.pc += 8 + hi := binary.LittleEndian.Uint64(c.body[c.pc : c.pc+8]) + c.emit( + newOperationV128Const(lo, hi), + ) + c.pc += 7 + case wasm.OpcodeVecV128Load: + arg, err := c.readMemoryArg(wasm.OpcodeI32LoadName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType128, arg), + ) + case wasm.OpcodeVecV128Load8x8s: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load8x8SName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType8x8s, arg), + ) + case wasm.OpcodeVecV128Load8x8u: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load8x8UName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType8x8u, arg), + ) + case wasm.OpcodeVecV128Load16x4s: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load16x4SName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType16x4s, arg), + ) + case wasm.OpcodeVecV128Load16x4u: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load16x4UName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType16x4u, arg), + ) + case wasm.OpcodeVecV128Load32x2s: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load32x2SName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType32x2s, arg), + ) + case wasm.OpcodeVecV128Load32x2u: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load32x2UName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType32x2u, arg), + ) + case wasm.OpcodeVecV128Load8Splat: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load8SplatName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType8Splat, arg), + ) + case wasm.OpcodeVecV128Load16Splat: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load16SplatName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType16Splat, arg), + ) + case wasm.OpcodeVecV128Load32Splat: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load32SplatName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType32Splat, arg), + ) + case wasm.OpcodeVecV128Load64Splat: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load64SplatName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType64Splat, arg), + ) + case wasm.OpcodeVecV128Load32zero: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load32zeroName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType32zero, arg), + ) + case wasm.OpcodeVecV128Load64zero: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load64zeroName) + if err != nil { + return err + } + c.emit( + newOperationV128Load(v128LoadType64zero, arg), + ) + case wasm.OpcodeVecV128Load8Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load8LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128LoadLane(laneIndex, 8, arg), + ) + case wasm.OpcodeVecV128Load16Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load16LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128LoadLane(laneIndex, 16, arg), + ) + case wasm.OpcodeVecV128Load32Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load32LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128LoadLane(laneIndex, 32, arg), + ) + case wasm.OpcodeVecV128Load64Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Load64LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128LoadLane(laneIndex, 64, arg), + ) + case wasm.OpcodeVecV128Store: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128StoreName) + if err != nil { + return err + } + c.emit( + newOperationV128Store(arg), + ) + case wasm.OpcodeVecV128Store8Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Store8LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128StoreLane(laneIndex, 8, arg), + ) + case wasm.OpcodeVecV128Store16Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Store16LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128StoreLane(laneIndex, 16, arg), + ) + case wasm.OpcodeVecV128Store32Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Store32LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128StoreLane(laneIndex, 32, arg), + ) + case wasm.OpcodeVecV128Store64Lane: + arg, err := c.readMemoryArg(wasm.OpcodeVecV128Store64LaneName) + if err != nil { + return err + } + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128StoreLane(laneIndex, 64, arg), + ) + case wasm.OpcodeVecI8x16ExtractLaneS: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, true, shapeI8x16), + ) + case wasm.OpcodeVecI8x16ExtractLaneU: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, false, shapeI8x16), + ) + case wasm.OpcodeVecI16x8ExtractLaneS: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, true, shapeI16x8), + ) + case wasm.OpcodeVecI16x8ExtractLaneU: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, false, shapeI16x8), + ) + case wasm.OpcodeVecI32x4ExtractLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, false, shapeI32x4), + ) + case wasm.OpcodeVecI64x2ExtractLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, false, shapeI64x2), + ) + case wasm.OpcodeVecF32x4ExtractLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, false, shapeF32x4), + ) + case wasm.OpcodeVecF64x2ExtractLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ExtractLane(laneIndex, false, shapeF64x2), + ) + case wasm.OpcodeVecI8x16ReplaceLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ReplaceLane(laneIndex, shapeI8x16), + ) + case wasm.OpcodeVecI16x8ReplaceLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ReplaceLane(laneIndex, shapeI16x8), + ) + case wasm.OpcodeVecI32x4ReplaceLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ReplaceLane(laneIndex, shapeI32x4), + ) + case wasm.OpcodeVecI64x2ReplaceLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ReplaceLane(laneIndex, shapeI64x2), + ) + case wasm.OpcodeVecF32x4ReplaceLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ReplaceLane(laneIndex, shapeF32x4), + ) + case wasm.OpcodeVecF64x2ReplaceLane: + c.pc++ + laneIndex := c.body[c.pc] + c.emit( + newOperationV128ReplaceLane(laneIndex, shapeF64x2), + ) + case wasm.OpcodeVecI8x16Splat: + c.emit( + newOperationV128Splat(shapeI8x16), + ) + case wasm.OpcodeVecI16x8Splat: + c.emit( + newOperationV128Splat(shapeI16x8), + ) + case wasm.OpcodeVecI32x4Splat: + c.emit( + newOperationV128Splat(shapeI32x4), + ) + case wasm.OpcodeVecI64x2Splat: + c.emit( + newOperationV128Splat(shapeI64x2), + ) + case wasm.OpcodeVecF32x4Splat: + c.emit( + newOperationV128Splat(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Splat: + c.emit( + newOperationV128Splat(shapeF64x2), + ) + case wasm.OpcodeVecI8x16Swizzle: + c.emit( + newOperationV128Swizzle(), + ) + case wasm.OpcodeVecV128i8x16Shuffle: + c.pc++ + lanes := make([]uint64, 16) + for i := uint64(0); i < 16; i++ { + lanes[i] = uint64(c.body[c.pc+i]) + } + op := newOperationV128Shuffle(lanes) + c.emit(op) + c.pc += 15 + case wasm.OpcodeVecV128AnyTrue: + c.emit( + newOperationV128AnyTrue(), + ) + case wasm.OpcodeVecI8x16AllTrue: + c.emit( + newOperationV128AllTrue(shapeI8x16), + ) + case wasm.OpcodeVecI16x8AllTrue: + c.emit( + newOperationV128AllTrue(shapeI16x8), + ) + case wasm.OpcodeVecI32x4AllTrue: + c.emit( + newOperationV128AllTrue(shapeI32x4), + ) + case wasm.OpcodeVecI64x2AllTrue: + c.emit( + newOperationV128AllTrue(shapeI64x2), + ) + case wasm.OpcodeVecI8x16BitMask: + c.emit( + newOperationV128BitMask(shapeI8x16), + ) + case wasm.OpcodeVecI16x8BitMask: + c.emit( + newOperationV128BitMask(shapeI16x8), + ) + case wasm.OpcodeVecI32x4BitMask: + c.emit( + newOperationV128BitMask(shapeI32x4), + ) + case wasm.OpcodeVecI64x2BitMask: + c.emit( + newOperationV128BitMask(shapeI64x2), + ) + case wasm.OpcodeVecV128And: + c.emit( + newOperationV128And(), + ) + case wasm.OpcodeVecV128Not: + c.emit( + newOperationV128Not(), + ) + case wasm.OpcodeVecV128Or: + c.emit( + newOperationV128Or(), + ) + case wasm.OpcodeVecV128Xor: + c.emit( + newOperationV128Xor(), + ) + case wasm.OpcodeVecV128Bitselect: + c.emit( + newOperationV128Bitselect(), + ) + case wasm.OpcodeVecV128AndNot: + c.emit( + newOperationV128AndNot(), + ) + case wasm.OpcodeVecI8x16Shl: + c.emit( + newOperationV128Shl(shapeI8x16), + ) + case wasm.OpcodeVecI8x16ShrS: + c.emit( + newOperationV128Shr(shapeI8x16, true), + ) + case wasm.OpcodeVecI8x16ShrU: + c.emit( + newOperationV128Shr(shapeI8x16, false), + ) + case wasm.OpcodeVecI16x8Shl: + c.emit( + newOperationV128Shl(shapeI16x8), + ) + case wasm.OpcodeVecI16x8ShrS: + c.emit( + newOperationV128Shr(shapeI16x8, true), + ) + case wasm.OpcodeVecI16x8ShrU: + c.emit( + newOperationV128Shr(shapeI16x8, false), + ) + case wasm.OpcodeVecI32x4Shl: + c.emit( + newOperationV128Shl(shapeI32x4), + ) + case wasm.OpcodeVecI32x4ShrS: + c.emit( + newOperationV128Shr(shapeI32x4, true), + ) + case wasm.OpcodeVecI32x4ShrU: + c.emit( + newOperationV128Shr(shapeI32x4, false), + ) + case wasm.OpcodeVecI64x2Shl: + c.emit( + newOperationV128Shl(shapeI64x2), + ) + case wasm.OpcodeVecI64x2ShrS: + c.emit( + newOperationV128Shr(shapeI64x2, true), + ) + case wasm.OpcodeVecI64x2ShrU: + c.emit( + newOperationV128Shr(shapeI64x2, false), + ) + case wasm.OpcodeVecI8x16Eq: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16Eq), + ) + case wasm.OpcodeVecI8x16Ne: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16Ne), + ) + case wasm.OpcodeVecI8x16LtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16LtS), + ) + case wasm.OpcodeVecI8x16LtU: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16LtU), + ) + case wasm.OpcodeVecI8x16GtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16GtS), + ) + case wasm.OpcodeVecI8x16GtU: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16GtU), + ) + case wasm.OpcodeVecI8x16LeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16LeS), + ) + case wasm.OpcodeVecI8x16LeU: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16LeU), + ) + case wasm.OpcodeVecI8x16GeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16GeS), + ) + case wasm.OpcodeVecI8x16GeU: + c.emit( + newOperationV128Cmp(v128CmpTypeI8x16GeU), + ) + case wasm.OpcodeVecI16x8Eq: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8Eq), + ) + case wasm.OpcodeVecI16x8Ne: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8Ne), + ) + case wasm.OpcodeVecI16x8LtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8LtS), + ) + case wasm.OpcodeVecI16x8LtU: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8LtU), + ) + case wasm.OpcodeVecI16x8GtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8GtS), + ) + case wasm.OpcodeVecI16x8GtU: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8GtU), + ) + case wasm.OpcodeVecI16x8LeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8LeS), + ) + case wasm.OpcodeVecI16x8LeU: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8LeU), + ) + case wasm.OpcodeVecI16x8GeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8GeS), + ) + case wasm.OpcodeVecI16x8GeU: + c.emit( + newOperationV128Cmp(v128CmpTypeI16x8GeU), + ) + case wasm.OpcodeVecI32x4Eq: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4Eq), + ) + case wasm.OpcodeVecI32x4Ne: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4Ne), + ) + case wasm.OpcodeVecI32x4LtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4LtS), + ) + case wasm.OpcodeVecI32x4LtU: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4LtU), + ) + case wasm.OpcodeVecI32x4GtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4GtS), + ) + case wasm.OpcodeVecI32x4GtU: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4GtU), + ) + case wasm.OpcodeVecI32x4LeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4LeS), + ) + case wasm.OpcodeVecI32x4LeU: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4LeU), + ) + case wasm.OpcodeVecI32x4GeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4GeS), + ) + case wasm.OpcodeVecI32x4GeU: + c.emit( + newOperationV128Cmp(v128CmpTypeI32x4GeU), + ) + case wasm.OpcodeVecI64x2Eq: + c.emit( + newOperationV128Cmp(v128CmpTypeI64x2Eq), + ) + case wasm.OpcodeVecI64x2Ne: + c.emit( + newOperationV128Cmp(v128CmpTypeI64x2Ne), + ) + case wasm.OpcodeVecI64x2LtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI64x2LtS), + ) + case wasm.OpcodeVecI64x2GtS: + c.emit( + newOperationV128Cmp(v128CmpTypeI64x2GtS), + ) + case wasm.OpcodeVecI64x2LeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI64x2LeS), + ) + case wasm.OpcodeVecI64x2GeS: + c.emit( + newOperationV128Cmp(v128CmpTypeI64x2GeS), + ) + case wasm.OpcodeVecF32x4Eq: + c.emit( + newOperationV128Cmp(v128CmpTypeF32x4Eq), + ) + case wasm.OpcodeVecF32x4Ne: + c.emit( + newOperationV128Cmp(v128CmpTypeF32x4Ne), + ) + case wasm.OpcodeVecF32x4Lt: + c.emit( + newOperationV128Cmp(v128CmpTypeF32x4Lt), + ) + case wasm.OpcodeVecF32x4Gt: + c.emit( + newOperationV128Cmp(v128CmpTypeF32x4Gt), + ) + case wasm.OpcodeVecF32x4Le: + c.emit( + newOperationV128Cmp(v128CmpTypeF32x4Le), + ) + case wasm.OpcodeVecF32x4Ge: + c.emit( + newOperationV128Cmp(v128CmpTypeF32x4Ge), + ) + case wasm.OpcodeVecF64x2Eq: + c.emit( + newOperationV128Cmp(v128CmpTypeF64x2Eq), + ) + case wasm.OpcodeVecF64x2Ne: + c.emit( + newOperationV128Cmp(v128CmpTypeF64x2Ne), + ) + case wasm.OpcodeVecF64x2Lt: + c.emit( + newOperationV128Cmp(v128CmpTypeF64x2Lt), + ) + case wasm.OpcodeVecF64x2Gt: + c.emit( + newOperationV128Cmp(v128CmpTypeF64x2Gt), + ) + case wasm.OpcodeVecF64x2Le: + c.emit( + newOperationV128Cmp(v128CmpTypeF64x2Le), + ) + case wasm.OpcodeVecF64x2Ge: + c.emit( + newOperationV128Cmp(v128CmpTypeF64x2Ge), + ) + case wasm.OpcodeVecI8x16Neg: + c.emit( + newOperationV128Neg(shapeI8x16), + ) + case wasm.OpcodeVecI16x8Neg: + c.emit( + newOperationV128Neg(shapeI16x8), + ) + case wasm.OpcodeVecI32x4Neg: + c.emit( + newOperationV128Neg(shapeI32x4), + ) + case wasm.OpcodeVecI64x2Neg: + c.emit( + newOperationV128Neg(shapeI64x2), + ) + case wasm.OpcodeVecF32x4Neg: + c.emit( + newOperationV128Neg(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Neg: + c.emit( + newOperationV128Neg(shapeF64x2), + ) + case wasm.OpcodeVecI8x16Add: + c.emit( + newOperationV128Add(shapeI8x16), + ) + case wasm.OpcodeVecI16x8Add: + c.emit( + newOperationV128Add(shapeI16x8), + ) + case wasm.OpcodeVecI32x4Add: + c.emit( + newOperationV128Add(shapeI32x4), + ) + case wasm.OpcodeVecI64x2Add: + c.emit( + newOperationV128Add(shapeI64x2), + ) + case wasm.OpcodeVecF32x4Add: + c.emit( + newOperationV128Add(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Add: + c.emit( + newOperationV128Add(shapeF64x2), + ) + case wasm.OpcodeVecI8x16Sub: + c.emit( + newOperationV128Sub(shapeI8x16), + ) + case wasm.OpcodeVecI16x8Sub: + c.emit( + newOperationV128Sub(shapeI16x8), + ) + case wasm.OpcodeVecI32x4Sub: + c.emit( + newOperationV128Sub(shapeI32x4), + ) + case wasm.OpcodeVecI64x2Sub: + c.emit( + newOperationV128Sub(shapeI64x2), + ) + case wasm.OpcodeVecF32x4Sub: + c.emit( + newOperationV128Sub(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Sub: + c.emit( + newOperationV128Sub(shapeF64x2), + ) + case wasm.OpcodeVecI8x16AddSatS: + c.emit( + newOperationV128AddSat(shapeI8x16, true), + ) + case wasm.OpcodeVecI8x16AddSatU: + c.emit( + newOperationV128AddSat(shapeI8x16, false), + ) + case wasm.OpcodeVecI16x8AddSatS: + c.emit( + newOperationV128AddSat(shapeI16x8, true), + ) + case wasm.OpcodeVecI16x8AddSatU: + c.emit( + newOperationV128AddSat(shapeI16x8, false), + ) + case wasm.OpcodeVecI8x16SubSatS: + c.emit( + newOperationV128SubSat(shapeI8x16, true), + ) + case wasm.OpcodeVecI8x16SubSatU: + c.emit( + newOperationV128SubSat(shapeI8x16, false), + ) + case wasm.OpcodeVecI16x8SubSatS: + c.emit( + newOperationV128SubSat(shapeI16x8, true), + ) + case wasm.OpcodeVecI16x8SubSatU: + c.emit( + newOperationV128SubSat(shapeI16x8, false), + ) + case wasm.OpcodeVecI16x8Mul: + c.emit( + newOperationV128Mul(shapeI16x8), + ) + case wasm.OpcodeVecI32x4Mul: + c.emit( + newOperationV128Mul(shapeI32x4), + ) + case wasm.OpcodeVecI64x2Mul: + c.emit( + newOperationV128Mul(shapeI64x2), + ) + case wasm.OpcodeVecF32x4Mul: + c.emit( + newOperationV128Mul(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Mul: + c.emit( + newOperationV128Mul(shapeF64x2), + ) + case wasm.OpcodeVecF32x4Sqrt: + c.emit( + newOperationV128Sqrt(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Sqrt: + c.emit( + newOperationV128Sqrt(shapeF64x2), + ) + case wasm.OpcodeVecF32x4Div: + c.emit( + newOperationV128Div(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Div: + c.emit( + newOperationV128Div(shapeF64x2), + ) + case wasm.OpcodeVecI8x16Abs: + c.emit( + newOperationV128Abs(shapeI8x16), + ) + case wasm.OpcodeVecI8x16Popcnt: + c.emit( + newOperationV128Popcnt(shapeI8x16), + ) + case wasm.OpcodeVecI16x8Abs: + c.emit( + newOperationV128Abs(shapeI16x8), + ) + case wasm.OpcodeVecI32x4Abs: + c.emit( + newOperationV128Abs(shapeI32x4), + ) + case wasm.OpcodeVecI64x2Abs: + c.emit( + newOperationV128Abs(shapeI64x2), + ) + case wasm.OpcodeVecF32x4Abs: + c.emit( + newOperationV128Abs(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Abs: + c.emit( + newOperationV128Abs(shapeF64x2), + ) + case wasm.OpcodeVecI8x16MinS: + c.emit( + newOperationV128Min(shapeI8x16, true), + ) + case wasm.OpcodeVecI8x16MinU: + c.emit( + newOperationV128Min(shapeI8x16, false), + ) + case wasm.OpcodeVecI8x16MaxS: + c.emit( + newOperationV128Max(shapeI8x16, true), + ) + case wasm.OpcodeVecI8x16MaxU: + c.emit( + newOperationV128Max(shapeI8x16, false), + ) + case wasm.OpcodeVecI8x16AvgrU: + c.emit( + newOperationV128AvgrU(shapeI8x16), + ) + case wasm.OpcodeVecI16x8MinS: + c.emit( + newOperationV128Min(shapeI16x8, true), + ) + case wasm.OpcodeVecI16x8MinU: + c.emit( + newOperationV128Min(shapeI16x8, false), + ) + case wasm.OpcodeVecI16x8MaxS: + c.emit( + newOperationV128Max(shapeI16x8, true), + ) + case wasm.OpcodeVecI16x8MaxU: + c.emit( + newOperationV128Max(shapeI16x8, false), + ) + case wasm.OpcodeVecI16x8AvgrU: + c.emit( + newOperationV128AvgrU(shapeI16x8), + ) + case wasm.OpcodeVecI32x4MinS: + c.emit( + newOperationV128Min(shapeI32x4, true), + ) + case wasm.OpcodeVecI32x4MinU: + c.emit( + newOperationV128Min(shapeI32x4, false), + ) + case wasm.OpcodeVecI32x4MaxS: + c.emit( + newOperationV128Max(shapeI32x4, true), + ) + case wasm.OpcodeVecI32x4MaxU: + c.emit( + newOperationV128Max(shapeI32x4, false), + ) + case wasm.OpcodeVecF32x4Min: + c.emit( + newOperationV128Min(shapeF32x4, false), + ) + case wasm.OpcodeVecF32x4Max: + c.emit( + newOperationV128Max(shapeF32x4, false), + ) + case wasm.OpcodeVecF64x2Min: + c.emit( + newOperationV128Min(shapeF64x2, false), + ) + case wasm.OpcodeVecF64x2Max: + c.emit( + newOperationV128Max(shapeF64x2, false), + ) + case wasm.OpcodeVecF32x4Pmin: + c.emit( + newOperationV128Pmin(shapeF32x4), + ) + case wasm.OpcodeVecF32x4Pmax: + c.emit( + newOperationV128Pmax(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Pmin: + c.emit( + newOperationV128Pmin(shapeF64x2), + ) + case wasm.OpcodeVecF64x2Pmax: + c.emit( + newOperationV128Pmax(shapeF64x2), + ) + case wasm.OpcodeVecF32x4Ceil: + c.emit( + newOperationV128Ceil(shapeF32x4), + ) + case wasm.OpcodeVecF32x4Floor: + c.emit( + newOperationV128Floor(shapeF32x4), + ) + case wasm.OpcodeVecF32x4Trunc: + c.emit( + newOperationV128Trunc(shapeF32x4), + ) + case wasm.OpcodeVecF32x4Nearest: + c.emit( + newOperationV128Nearest(shapeF32x4), + ) + case wasm.OpcodeVecF64x2Ceil: + c.emit( + newOperationV128Ceil(shapeF64x2), + ) + case wasm.OpcodeVecF64x2Floor: + c.emit( + newOperationV128Floor(shapeF64x2), + ) + case wasm.OpcodeVecF64x2Trunc: + c.emit( + newOperationV128Trunc(shapeF64x2), + ) + case wasm.OpcodeVecF64x2Nearest: + c.emit( + newOperationV128Nearest(shapeF64x2), + ) + case wasm.OpcodeVecI16x8ExtendLowI8x16S: + c.emit( + newOperationV128Extend(shapeI8x16, true, true), + ) + case wasm.OpcodeVecI16x8ExtendHighI8x16S: + c.emit( + newOperationV128Extend(shapeI8x16, true, false), + ) + case wasm.OpcodeVecI16x8ExtendLowI8x16U: + c.emit( + newOperationV128Extend(shapeI8x16, false, true), + ) + case wasm.OpcodeVecI16x8ExtendHighI8x16U: + c.emit( + newOperationV128Extend(shapeI8x16, false, false), + ) + case wasm.OpcodeVecI32x4ExtendLowI16x8S: + c.emit( + newOperationV128Extend(shapeI16x8, true, true), + ) + case wasm.OpcodeVecI32x4ExtendHighI16x8S: + c.emit( + newOperationV128Extend(shapeI16x8, true, false), + ) + case wasm.OpcodeVecI32x4ExtendLowI16x8U: + c.emit( + newOperationV128Extend(shapeI16x8, false, true), + ) + case wasm.OpcodeVecI32x4ExtendHighI16x8U: + c.emit( + newOperationV128Extend(shapeI16x8, false, false), + ) + case wasm.OpcodeVecI64x2ExtendLowI32x4S: + c.emit( + newOperationV128Extend(shapeI32x4, true, true), + ) + case wasm.OpcodeVecI64x2ExtendHighI32x4S: + c.emit( + newOperationV128Extend(shapeI32x4, true, false), + ) + case wasm.OpcodeVecI64x2ExtendLowI32x4U: + c.emit( + newOperationV128Extend(shapeI32x4, false, true), + ) + case wasm.OpcodeVecI64x2ExtendHighI32x4U: + c.emit( + newOperationV128Extend(shapeI32x4, false, false), + ) + case wasm.OpcodeVecI16x8Q15mulrSatS: + c.emit( + newOperationV128Q15mulrSatS(), + ) + case wasm.OpcodeVecI16x8ExtMulLowI8x16S: + c.emit( + newOperationV128ExtMul(shapeI8x16, true, true), + ) + case wasm.OpcodeVecI16x8ExtMulHighI8x16S: + c.emit( + newOperationV128ExtMul(shapeI8x16, true, false), + ) + case wasm.OpcodeVecI16x8ExtMulLowI8x16U: + c.emit( + newOperationV128ExtMul(shapeI8x16, false, true), + ) + case wasm.OpcodeVecI16x8ExtMulHighI8x16U: + c.emit( + newOperationV128ExtMul(shapeI8x16, false, false), + ) + case wasm.OpcodeVecI32x4ExtMulLowI16x8S: + c.emit( + newOperationV128ExtMul(shapeI16x8, true, true), + ) + case wasm.OpcodeVecI32x4ExtMulHighI16x8S: + c.emit( + newOperationV128ExtMul(shapeI16x8, true, false), + ) + case wasm.OpcodeVecI32x4ExtMulLowI16x8U: + c.emit( + newOperationV128ExtMul(shapeI16x8, false, true), + ) + case wasm.OpcodeVecI32x4ExtMulHighI16x8U: + c.emit( + newOperationV128ExtMul(shapeI16x8, false, false), + ) + case wasm.OpcodeVecI64x2ExtMulLowI32x4S: + c.emit( + newOperationV128ExtMul(shapeI32x4, true, true), + ) + case wasm.OpcodeVecI64x2ExtMulHighI32x4S: + c.emit( + newOperationV128ExtMul(shapeI32x4, true, false), + ) + case wasm.OpcodeVecI64x2ExtMulLowI32x4U: + c.emit( + newOperationV128ExtMul(shapeI32x4, false, true), + ) + case wasm.OpcodeVecI64x2ExtMulHighI32x4U: + c.emit( + newOperationV128ExtMul(shapeI32x4, false, false), + ) + case wasm.OpcodeVecI16x8ExtaddPairwiseI8x16S: + c.emit( + newOperationV128ExtAddPairwise(shapeI8x16, true), + ) + case wasm.OpcodeVecI16x8ExtaddPairwiseI8x16U: + c.emit( + newOperationV128ExtAddPairwise(shapeI8x16, false), + ) + case wasm.OpcodeVecI32x4ExtaddPairwiseI16x8S: + c.emit( + newOperationV128ExtAddPairwise(shapeI16x8, true), + ) + case wasm.OpcodeVecI32x4ExtaddPairwiseI16x8U: + c.emit( + newOperationV128ExtAddPairwise(shapeI16x8, false), + ) + case wasm.OpcodeVecF64x2PromoteLowF32x4Zero: + c.emit( + newOperationV128FloatPromote(), + ) + case wasm.OpcodeVecF32x4DemoteF64x2Zero: + c.emit( + newOperationV128FloatDemote(), + ) + case wasm.OpcodeVecF32x4ConvertI32x4S: + c.emit( + newOperationV128FConvertFromI(shapeF32x4, true), + ) + case wasm.OpcodeVecF32x4ConvertI32x4U: + c.emit( + newOperationV128FConvertFromI(shapeF32x4, false), + ) + case wasm.OpcodeVecF64x2ConvertLowI32x4S: + c.emit( + newOperationV128FConvertFromI(shapeF64x2, true), + ) + case wasm.OpcodeVecF64x2ConvertLowI32x4U: + c.emit( + newOperationV128FConvertFromI(shapeF64x2, false), + ) + case wasm.OpcodeVecI32x4DotI16x8S: + c.emit( + newOperationV128Dot(), + ) + case wasm.OpcodeVecI8x16NarrowI16x8S: + c.emit( + newOperationV128Narrow(shapeI16x8, true), + ) + case wasm.OpcodeVecI8x16NarrowI16x8U: + c.emit( + newOperationV128Narrow(shapeI16x8, false), + ) + case wasm.OpcodeVecI16x8NarrowI32x4S: + c.emit( + newOperationV128Narrow(shapeI32x4, true), + ) + case wasm.OpcodeVecI16x8NarrowI32x4U: + c.emit( + newOperationV128Narrow(shapeI32x4, false), + ) + case wasm.OpcodeVecI32x4TruncSatF32x4S: + c.emit( + newOperationV128ITruncSatFromF(shapeF32x4, true), + ) + case wasm.OpcodeVecI32x4TruncSatF32x4U: + c.emit( + newOperationV128ITruncSatFromF(shapeF32x4, false), + ) + case wasm.OpcodeVecI32x4TruncSatF64x2SZero: + c.emit( + newOperationV128ITruncSatFromF(shapeF64x2, true), + ) + case wasm.OpcodeVecI32x4TruncSatF64x2UZero: + c.emit( + newOperationV128ITruncSatFromF(shapeF64x2, false), + ) + default: + return fmt.Errorf("unsupported vector instruction in interpreterir: %s", wasm.VectorInstructionName(vecOp)) + } + case wasm.OpcodeAtomicPrefix: + c.pc++ + atomicOp := c.body[c.pc] + switch atomicOp { + case wasm.OpcodeAtomicMemoryWait32: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicMemoryWait32Name) + if err != nil { + return err + } + c.emit( + newOperationAtomicMemoryWait(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicMemoryWait64: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicMemoryWait64Name) + if err != nil { + return err + } + c.emit( + newOperationAtomicMemoryWait(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicMemoryNotify: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicMemoryNotifyName) + if err != nil { + return err + } + c.emit( + newOperationAtomicMemoryNotify(imm), + ) + case wasm.OpcodeAtomicFence: + // Skip immediate value + c.pc++ + _ = c.body[c.pc] + c.emit( + newOperationAtomicFence(), + ) + case wasm.OpcodeAtomicI32Load: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32LoadName) + if err != nil { + return err + } + c.emit( + newOperationAtomicLoad(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI64Load: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64LoadName) + if err != nil { + return err + } + c.emit( + newOperationAtomicLoad(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI32Load8U: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Load8UName) + if err != nil { + return err + } + c.emit( + newOperationAtomicLoad8(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI32Load16U: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Load16UName) + if err != nil { + return err + } + c.emit( + newOperationAtomicLoad16(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI64Load8U: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Load8UName) + if err != nil { + return err + } + c.emit( + newOperationAtomicLoad8(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI64Load16U: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Load16UName) + if err != nil { + return err + } + c.emit( + newOperationAtomicLoad16(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI64Load32U: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Load32UName) + if err != nil { + return err + } + c.emit( + newOperationAtomicLoad(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI32Store: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32StoreName) + if err != nil { + return err + } + c.emit( + newOperationAtomicStore(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI32Store8: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Store8Name) + if err != nil { + return err + } + c.emit( + newOperationAtomicStore8(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI32Store16: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Store16Name) + if err != nil { + return err + } + c.emit( + newOperationAtomicStore16(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI64Store: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64StoreName) + if err != nil { + return err + } + c.emit( + newOperationAtomicStore(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI64Store8: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Store8Name) + if err != nil { + return err + } + c.emit( + newOperationAtomicStore8(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI64Store16: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Store16Name) + if err != nil { + return err + } + c.emit( + newOperationAtomicStore16(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI64Store32: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Store32Name) + if err != nil { + return err + } + c.emit( + newOperationAtomicStore(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI32RmwAdd: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32RmwAddName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpAdd), + ) + case wasm.OpcodeAtomicI64RmwAdd: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64RmwAddName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI64, imm, atomicArithmeticOpAdd), + ) + case wasm.OpcodeAtomicI32Rmw8AddU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw8AddUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI32, imm, atomicArithmeticOpAdd), + ) + case wasm.OpcodeAtomicI64Rmw8AddU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw8AddUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI64, imm, atomicArithmeticOpAdd), + ) + case wasm.OpcodeAtomicI32Rmw16AddU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw16AddUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI32, imm, atomicArithmeticOpAdd), + ) + case wasm.OpcodeAtomicI64Rmw16AddU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw16AddUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI64, imm, atomicArithmeticOpAdd), + ) + case wasm.OpcodeAtomicI64Rmw32AddU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw32AddUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpAdd), + ) + case wasm.OpcodeAtomicI32RmwSub: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32RmwSubName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpSub), + ) + case wasm.OpcodeAtomicI64RmwSub: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64RmwSubName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI64, imm, atomicArithmeticOpSub), + ) + case wasm.OpcodeAtomicI32Rmw8SubU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw8SubUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI32, imm, atomicArithmeticOpSub), + ) + case wasm.OpcodeAtomicI64Rmw8SubU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw8SubUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI64, imm, atomicArithmeticOpSub), + ) + case wasm.OpcodeAtomicI32Rmw16SubU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw16SubUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI32, imm, atomicArithmeticOpSub), + ) + case wasm.OpcodeAtomicI64Rmw16SubU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw16SubUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI64, imm, atomicArithmeticOpSub), + ) + case wasm.OpcodeAtomicI64Rmw32SubU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw32SubUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpSub), + ) + case wasm.OpcodeAtomicI32RmwAnd: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32RmwAndName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpAnd), + ) + case wasm.OpcodeAtomicI64RmwAnd: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64RmwAndName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI64, imm, atomicArithmeticOpAnd), + ) + case wasm.OpcodeAtomicI32Rmw8AndU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw8AndUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI32, imm, atomicArithmeticOpAnd), + ) + case wasm.OpcodeAtomicI64Rmw8AndU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw8AndUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI64, imm, atomicArithmeticOpAnd), + ) + case wasm.OpcodeAtomicI32Rmw16AndU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw16AndUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI32, imm, atomicArithmeticOpAnd), + ) + case wasm.OpcodeAtomicI64Rmw16AndU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw16AndUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI64, imm, atomicArithmeticOpAnd), + ) + case wasm.OpcodeAtomicI64Rmw32AndU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw32AndUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpAnd), + ) + case wasm.OpcodeAtomicI32RmwOr: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32RmwOrName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpOr), + ) + case wasm.OpcodeAtomicI64RmwOr: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64RmwOrName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI64, imm, atomicArithmeticOpOr), + ) + case wasm.OpcodeAtomicI32Rmw8OrU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw8OrUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI32, imm, atomicArithmeticOpOr), + ) + case wasm.OpcodeAtomicI64Rmw8OrU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw8OrUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI64, imm, atomicArithmeticOpOr), + ) + case wasm.OpcodeAtomicI32Rmw16OrU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw16OrUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI32, imm, atomicArithmeticOpOr), + ) + case wasm.OpcodeAtomicI64Rmw16OrU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw16OrUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI64, imm, atomicArithmeticOpOr), + ) + case wasm.OpcodeAtomicI64Rmw32OrU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw32OrUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpOr), + ) + case wasm.OpcodeAtomicI32RmwXor: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32RmwXorName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpXor), + ) + case wasm.OpcodeAtomicI64RmwXor: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64RmwXorName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI64, imm, atomicArithmeticOpXor), + ) + case wasm.OpcodeAtomicI32Rmw8XorU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw8XorUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI32, imm, atomicArithmeticOpXor), + ) + case wasm.OpcodeAtomicI64Rmw8XorU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw8XorUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI64, imm, atomicArithmeticOpXor), + ) + case wasm.OpcodeAtomicI32Rmw16XorU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw16XorUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI32, imm, atomicArithmeticOpXor), + ) + case wasm.OpcodeAtomicI64Rmw16XorU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw16XorUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI64, imm, atomicArithmeticOpXor), + ) + case wasm.OpcodeAtomicI64Rmw32XorU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw32XorUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpXor), + ) + case wasm.OpcodeAtomicI32RmwXchg: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32RmwXchgName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpNop), + ) + case wasm.OpcodeAtomicI64RmwXchg: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64RmwXchgName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI64, imm, atomicArithmeticOpNop), + ) + case wasm.OpcodeAtomicI32Rmw8XchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw8XchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI32, imm, atomicArithmeticOpNop), + ) + case wasm.OpcodeAtomicI64Rmw8XchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw8XchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8(unsignedTypeI64, imm, atomicArithmeticOpNop), + ) + case wasm.OpcodeAtomicI32Rmw16XchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw16XchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI32, imm, atomicArithmeticOpNop), + ) + case wasm.OpcodeAtomicI64Rmw16XchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw16XchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16(unsignedTypeI64, imm, atomicArithmeticOpNop), + ) + case wasm.OpcodeAtomicI64Rmw32XchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw32XchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW(unsignedTypeI32, imm, atomicArithmeticOpNop), + ) + case wasm.OpcodeAtomicI32RmwCmpxchg: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32RmwCmpxchgName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMWCmpxchg(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI64RmwCmpxchg: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64RmwCmpxchgName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMWCmpxchg(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI32Rmw8CmpxchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw8CmpxchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8Cmpxchg(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI64Rmw8CmpxchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw8CmpxchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW8Cmpxchg(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI32Rmw16CmpxchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI32Rmw16CmpxchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16Cmpxchg(unsignedTypeI32, imm), + ) + case wasm.OpcodeAtomicI64Rmw16CmpxchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw16CmpxchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMW16Cmpxchg(unsignedTypeI64, imm), + ) + case wasm.OpcodeAtomicI64Rmw32CmpxchgU: + imm, err := c.readMemoryArg(wasm.OpcodeAtomicI64Rmw32CmpxchgUName) + if err != nil { + return err + } + c.emit( + newOperationAtomicRMWCmpxchg(unsignedTypeI32, imm), + ) + default: + return fmt.Errorf("unsupported atomic instruction in interpreterir: %s", wasm.AtomicInstructionName(atomicOp)) + } + default: + return fmt.Errorf("unsupported instruction in interpreterir: 0x%x", op) + } + + // Move the program counter to point to the next instruction. + c.pc++ + return nil +} + +func (c *compiler) nextFrameID() (id uint32) { + id = c.currentFrameID + 1 + c.currentFrameID++ + return +} + +func (c *compiler) applyToStack(opcode wasm.Opcode) (index uint32, err error) { + switch opcode { + case + // These are the opcodes that is coupled with "index"　immediate + // and it DOES affect the signature of opcode. + wasm.OpcodeCall, + wasm.OpcodeCallIndirect, + wasm.OpcodeLocalGet, + wasm.OpcodeLocalSet, + wasm.OpcodeLocalTee, + wasm.OpcodeGlobalGet, + wasm.OpcodeGlobalSet: + // Assumes that we are at the opcode now so skip it before read immediates. + v, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return 0, fmt.Errorf("reading immediates: %w", err) + } + c.pc += num + index = v + default: + // Note that other opcodes are free of index + // as it doesn't affect the signature of opt code. + // In other words, the "index" argument of wasmOpcodeSignature + // is ignored there. + } + + if c.unreachableState.on { + return 0, nil + } + + // Retrieve the signature of the opcode. + s, err := c.wasmOpcodeSignature(opcode, index) + if err != nil { + return 0, err + } + + // Manipulate the stack according to the signature. + // Note that the following algorithm assumes that + // the unknown type is unique in the signature, + // and is determined by the actual type on the stack. + // The determined type is stored in this typeParam. + var typeParam unsignedType + var typeParamFound bool + for i := range s.in { + want := s.in[len(s.in)-1-i] + actual := c.stackPop() + if want == unsignedTypeUnknown && typeParamFound { + want = typeParam + } else if want == unsignedTypeUnknown { + want = actual + typeParam = want + typeParamFound = true + } + if want != actual { + return 0, fmt.Errorf("input signature mismatch: want %s but have %s", want, actual) + } + } + + for _, target := range s.out { + if target == unsignedTypeUnknown && !typeParamFound { + return 0, fmt.Errorf("cannot determine type of unknown result") + } else if target == unsignedTypeUnknown { + c.stackPush(typeParam) + } else { + c.stackPush(target) + } + } + + return index, nil +} + +func (c *compiler) stackPeek() (ret unsignedType) { + ret = c.stack[len(c.stack)-1] + return +} + +func (c *compiler) stackPop() (ret unsignedType) { + // No need to check stack bound + // as we can assume that all the operations + // are valid thanks to validateFunction + // at module validation phase. + ret = c.stack[len(c.stack)-1] + c.stack = c.stack[:len(c.stack)-1] + return +} + +func (c *compiler) stackPush(ts unsignedType) { + c.stack = append(c.stack, ts) +} + +// emit adds the operations into the result. +func (c *compiler) emit(op unionOperation) { + if !c.unreachableState.on { + switch op.Kind { + case operationKindDrop: + // If the drop range is nil, + // we could remove such operations. + // That happens when drop operation is unnecessary. + // i.e. when there's no need to adjust stack before jmp. + if int64(op.U1) == -1 { + return + } + } + c.result.Operations = append(c.result.Operations, op) + if c.needSourceOffset { + c.result.IROperationSourceOffsetsInWasmBinary = append(c.result.IROperationSourceOffsetsInWasmBinary, + c.currentOpPC+c.bodyOffsetInCodeSection) + } + } +} + +// Emit const expression with default values of the given type. +func (c *compiler) emitDefaultValue(t wasm.ValueType) { + switch t { + case wasm.ValueTypeI32: + c.stackPush(unsignedTypeI32) + c.emit(newOperationConstI32(0)) + case wasm.ValueTypeI64, wasm.ValueTypeExternref, wasm.ValueTypeFuncref: + c.stackPush(unsignedTypeI64) + c.emit(newOperationConstI64(0)) + case wasm.ValueTypeF32: + c.stackPush(unsignedTypeF32) + c.emit(newOperationConstF32(0)) + case wasm.ValueTypeF64: + c.stackPush(unsignedTypeF64) + c.emit(newOperationConstF64(0)) + case wasm.ValueTypeV128: + c.stackPush(unsignedTypeV128) + c.emit(newOperationV128Const(0, 0)) + } +} + +// Returns the "depth" (starting from top of the stack) +// of the n-th local. +func (c *compiler) localDepth(index wasm.Index) int { + height := c.localIndexToStackHeightInUint64[index] + return c.stackLenInUint64(len(c.stack)) - 1 - int(height) +} + +func (c *compiler) localType(index wasm.Index) (t wasm.ValueType) { + if params := uint32(len(c.sig.Params)); index < params { + t = c.sig.Params[index] + } else { + t = c.localTypes[index-params] + } + return +} + +// getFrameDropRange returns the range (starting from top of the stack) that spans across the (uint64) stack. The range is +// supposed to be dropped from the stack when the given frame exists or branch into it. +// +// * frame is the control frame which the call-site is trying to branch into or exit. +// * isEnd true if the call-site is handling wasm.OpcodeEnd. +func (c *compiler) getFrameDropRange(frame *controlFrame, isEnd bool) inclusiveRange { + var start int + if !isEnd && frame.kind == controlFrameKindLoop { + // If this is not End and the call-site is trying to branch into the Loop control frame, + // we have to Start executing from the beginning of the loop block. + // Therefore, we have to pass the inputs to the frame. + start = frame.blockType.ParamNumInUint64 + } else { + start = frame.blockType.ResultNumInUint64 + } + var end int + if frame.kind == controlFrameKindFunction { + // On the function return, we eliminate all the contents on the stack + // including locals (existing below of frame.originalStackLen) + end = c.stackLenInUint64(len(c.stack)) - 1 + } else { + end = c.stackLenInUint64(len(c.stack)) - 1 - c.stackLenInUint64(frame.originalStackLenWithoutParam) + } + if start <= end { + return inclusiveRange{Start: int32(start), End: int32(end)} + } else { + return nopinclusiveRange + } +} + +func (c *compiler) stackLenInUint64(ceil int) (ret int) { + for i := 0; i < ceil; i++ { + if c.stack[i] == unsignedTypeV128 { + ret += 2 + } else { + ret++ + } + } + return +} + +func (c *compiler) readMemoryArg(tag string) (memoryArg, error) { + c.result.UsesMemory = true + alignment, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return memoryArg{}, fmt.Errorf("reading alignment for %s: %w", tag, err) + } + c.pc += num + offset, num, err := leb128.LoadUint32(c.body[c.pc+1:]) + if err != nil { + return memoryArg{}, fmt.Errorf("reading offset for %s: %w", tag, err) + } + c.pc += num + return memoryArg{Offset: offset, Alignment: alignment}, nil +} diff --git a/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/format.go b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/format.go new file mode 100644 index 000000000..8af1d94b0 --- /dev/null +++ b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/format.go @@ -0,0 +1,22 @@ +package interpreter + +import ( + "bytes" +) + +func format(ops []unionOperation) string { + buf := bytes.NewBuffer(nil) + + _, _ = buf.WriteString(".entrypoint\n") + for i := range ops { + op := &ops[i] + str := op.String() + isLabel := op.Kind == operationKindLabel + if !isLabel { + const indent = "\t" + str = indent + str + } + _, _ = buf.WriteString(str + "\n") + } + return buf.String() +} diff --git a/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/interpreter.go b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/interpreter.go new file mode 100644 index 000000000..a89ddc457 --- /dev/null +++ b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/interpreter.go @@ -0,0 +1,4583 @@ +package interpreter + +import ( + "context" + "encoding/binary" + "errors" + "fmt" + "math" + "math/bits" + "sync" + "unsafe" + + "github.com/tetratelabs/wazero/api" + "github.com/tetratelabs/wazero/experimental" + "github.com/tetratelabs/wazero/internal/expctxkeys" + "github.com/tetratelabs/wazero/internal/filecache" + "github.com/tetratelabs/wazero/internal/internalapi" + "github.com/tetratelabs/wazero/internal/moremath" + "github.com/tetratelabs/wazero/internal/wasm" + "github.com/tetratelabs/wazero/internal/wasmdebug" + "github.com/tetratelabs/wazero/internal/wasmruntime" +) + +// callStackCeiling is the maximum WebAssembly call frame stack height. This allows wazero to raise +// wasm.ErrCallStackOverflow instead of overflowing the Go runtime. +// +// The default value should suffice for most use cases. Those wishing to change this can via `go build -ldflags`. +var callStackCeiling = 2000 + +// engine is an interpreter implementation of wasm.Engine +type engine struct { + enabledFeatures api.CoreFeatures + compiledFunctions map[wasm.ModuleID][]compiledFunction // guarded by mutex. + mux sync.RWMutex +} + +func NewEngine(_ context.Context, enabledFeatures api.CoreFeatures, _ filecache.Cache) wasm.Engine { + return &engine{ + enabledFeatures: enabledFeatures, + compiledFunctions: map[wasm.ModuleID][]compiledFunction{}, + } +} + +// Close implements the same method as documented on wasm.Engine. +func (e *engine) Close() (err error) { + return +} + +// CompiledModuleCount implements the same method as documented on wasm.Engine. +func (e *engine) CompiledModuleCount() uint32 { + return uint32(len(e.compiledFunctions)) +} + +// DeleteCompiledModule implements the same method as documented on wasm.Engine. +func (e *engine) DeleteCompiledModule(m *wasm.Module) { + e.deleteCompiledFunctions(m) +} + +func (e *engine) deleteCompiledFunctions(module *wasm.Module) { + e.mux.Lock() + defer e.mux.Unlock() + delete(e.compiledFunctions, module.ID) +} + +func (e *engine) addCompiledFunctions(module *wasm.Module, fs []compiledFunction) { + e.mux.Lock() + defer e.mux.Unlock() + e.compiledFunctions[module.ID] = fs +} + +func (e *engine) getCompiledFunctions(module *wasm.Module) (fs []compiledFunction, ok bool) { + e.mux.RLock() + defer e.mux.RUnlock() + fs, ok = e.compiledFunctions[module.ID] + return +} + +// moduleEngine implements wasm.ModuleEngine +type moduleEngine struct { + // codes are the compiled functions in a module instances. + // The index is module instance-scoped. + functions []function + + // parentEngine holds *engine from which this module engine is created from. + parentEngine *engine +} + +// GetGlobalValue implements the same method as documented on wasm.ModuleEngine. +func (e *moduleEngine) GetGlobalValue(wasm.Index) (lo, hi uint64) { + panic("BUG: GetGlobalValue should never be called on interpreter mode") +} + +// SetGlobalValue implements the same method as documented on wasm.ModuleEngine. +func (e *moduleEngine) SetGlobalValue(idx wasm.Index, lo, hi uint64) { + panic("BUG: SetGlobalValue should never be called on interpreter mode") +} + +// OwnsGlobals implements the same method as documented on wasm.ModuleEngine. +func (e *moduleEngine) OwnsGlobals() bool { return false } + +// callEngine holds context per moduleEngine.Call, and shared across all the +// function calls originating from the same moduleEngine.Call execution. +// +// This implements api.Function. +type callEngine struct { + internalapi.WazeroOnlyType + + // stack contains the operands. + // Note that all the values are represented as uint64. + stack []uint64 + + // frames are the function call stack. + frames []*callFrame + + // f is the initial function for this call engine. + f *function + + // stackiterator for Listeners to walk frames and stack. + stackIterator stackIterator +} + +func (e *moduleEngine) newCallEngine(compiled *function) *callEngine { + return &callEngine{f: compiled} +} + +func (ce *callEngine) pushValue(v uint64) { + ce.stack = append(ce.stack, v) +} + +func (ce *callEngine) pushValues(v []uint64) { + ce.stack = append(ce.stack, v...) +} + +func (ce *callEngine) popValue() (v uint64) { + // No need to check stack bound + // as we can assume that all the operations + // are valid thanks to validateFunction + // at module validation phase + // and interpreterir translation + // before compilation. + stackTopIndex := len(ce.stack) - 1 + v = ce.stack[stackTopIndex] + ce.stack = ce.stack[:stackTopIndex] + return +} + +func (ce *callEngine) popValues(v []uint64) { + stackTopIndex := len(ce.stack) - len(v) + copy(v, ce.stack[stackTopIndex:]) + ce.stack = ce.stack[:stackTopIndex] +} + +// peekValues peeks api.ValueType values from the stack and returns them. +func (ce *callEngine) peekValues(count int) []uint64 { + if count == 0 { + return nil + } + stackLen := len(ce.stack) + return ce.stack[stackLen-count : stackLen] +} + +func (ce *callEngine) drop(raw uint64) { + r := inclusiveRangeFromU64(raw) + if r.Start == -1 { + return + } else if r.Start == 0 { + ce.stack = ce.stack[:int32(len(ce.stack))-1-r.End] + } else { + newStack := ce.stack[:int32(len(ce.stack))-1-r.End] + newStack = append(newStack, ce.stack[int32(len(ce.stack))-r.Start:]...) + ce.stack = newStack + } +} + +func (ce *callEngine) pushFrame(frame *callFrame) { + if callStackCeiling <= len(ce.frames) { + panic(wasmruntime.ErrRuntimeStackOverflow) + } + ce.frames = append(ce.frames, frame) +} + +func (ce *callEngine) popFrame() (frame *callFrame) { + // No need to check stack bound as we can assume that all the operations are valid thanks to validateFunction at + // module validation phase and interpreterir translation before compilation. + oneLess := len(ce.frames) - 1 + frame = ce.frames[oneLess] + ce.frames = ce.frames[:oneLess] + return +} + +type callFrame struct { + // pc is the program counter representing the current position in code.body. + pc uint64 + // f is the compiled function used in this function frame. + f *function + // base index in the frame of this function, used to detect the count of + // values on the stack. + base int +} + +type compiledFunction struct { + source *wasm.Module + body []unionOperation + listener experimental.FunctionListener + offsetsInWasmBinary []uint64 + hostFn interface{} + ensureTermination bool + index wasm.Index +} + +type function struct { + funcType *wasm.FunctionType + moduleInstance *wasm.ModuleInstance + typeID wasm.FunctionTypeID + parent *compiledFunction +} + +// functionFromUintptr resurrects the original *function from the given uintptr +// which comes from either funcref table or OpcodeRefFunc instruction. +func functionFromUintptr(ptr uintptr) *function { + // Wraps ptrs as the double pointer in order to avoid the unsafe access as detected by race detector. + // + // For example, if we have (*function)(unsafe.Pointer(ptr)) instead, then the race detector's "checkptr" + // subroutine wanrs as "checkptr: pointer arithmetic result points to invalid allocation" + // https://github.com/golang/go/blob/1ce7fcf139417d618c2730010ede2afb41664211/src/runtime/checkptr.go#L69 + var wrapped *uintptr = &ptr + return *(**function)(unsafe.Pointer(wrapped)) +} + +type snapshot struct { + stack []uint64 + frames []*callFrame + pc uint64 + + ret []uint64 + + ce *callEngine +} + +// Snapshot implements the same method as documented on experimental.Snapshotter. +func (ce *callEngine) Snapshot() experimental.Snapshot { + stack := make([]uint64, len(ce.stack)) + copy(stack, ce.stack) + + frames := make([]*callFrame, len(ce.frames)) + copy(frames, ce.frames) + + return &snapshot{ + stack: stack, + frames: frames, + ce: ce, + } +} + +// Restore implements the same method as documented on experimental.Snapshot. +func (s *snapshot) Restore(ret []uint64) { + s.ret = ret + panic(s) +} + +func (s *snapshot) doRestore() { + ce := s.ce + + ce.stack = s.stack + ce.frames = s.frames + ce.frames[len(ce.frames)-1].pc = s.pc + + copy(ce.stack[len(ce.stack)-len(s.ret):], s.ret) +} + +// Error implements the same method on error. +func (s *snapshot) Error() string { + return "unhandled snapshot restore, this generally indicates restore was called from a different " + + "exported function invocation than snapshot" +} + +// stackIterator implements experimental.StackIterator. +type stackIterator struct { + stack []uint64 + frames []*callFrame + started bool + fn *function + pc uint64 +} + +func (si *stackIterator) reset(stack []uint64, frames []*callFrame, f *function) { + si.fn = f + si.pc = 0 + si.stack = stack + si.frames = frames + si.started = false +} + +func (si *stackIterator) clear() { + si.stack = nil + si.frames = nil + si.started = false + si.fn = nil +} + +// Next implements the same method as documented on experimental.StackIterator. +func (si *stackIterator) Next() bool { + if !si.started { + si.started = true + return true + } + + if len(si.frames) == 0 { + return false + } + + frame := si.frames[len(si.frames)-1] + si.stack = si.stack[:frame.base] + si.fn = frame.f + si.pc = frame.pc + si.frames = si.frames[:len(si.frames)-1] + return true +} + +// Function implements the same method as documented on +// experimental.StackIterator. +func (si *stackIterator) Function() experimental.InternalFunction { + return internalFunction{si.fn} +} + +// ProgramCounter implements the same method as documented on +// experimental.StackIterator. +func (si *stackIterator) ProgramCounter() experimental.ProgramCounter { + return experimental.ProgramCounter(si.pc) +} + +// internalFunction implements experimental.InternalFunction. +type internalFunction struct{ *function } + +// Definition implements the same method as documented on +// experimental.InternalFunction. +func (f internalFunction) Definition() api.FunctionDefinition { + return f.definition() +} + +// SourceOffsetForPC implements the same method as documented on +// experimental.InternalFunction. +func (f internalFunction) SourceOffsetForPC(pc experimental.ProgramCounter) uint64 { + offsetsMap := f.parent.offsetsInWasmBinary + if uint64(pc) < uint64(len(offsetsMap)) { + return offsetsMap[pc] + } + return 0 +} + +// interpreter mode doesn't maintain call frames in the stack, so pass the zero size to the IR. +const callFrameStackSize = 0 + +// CompileModule implements the same method as documented on wasm.Engine. +func (e *engine) CompileModule(_ context.Context, module *wasm.Module, listeners []experimental.FunctionListener, ensureTermination bool) error { + if _, ok := e.getCompiledFunctions(module); ok { // cache hit! + return nil + } + + funcs := make([]compiledFunction, len(module.FunctionSection)) + irCompiler, err := newCompiler(e.enabledFeatures, callFrameStackSize, module, ensureTermination) + if err != nil { + return err + } + imported := module.ImportFunctionCount + for i := range module.CodeSection { + var lsn experimental.FunctionListener + if i < len(listeners) { + lsn = listeners[i] + } + + compiled := &funcs[i] + // If this is the host function, there's nothing to do as the runtime representation of + // host function in interpreter is its Go function itself as opposed to Wasm functions, + // which need to be compiled down to + if codeSeg := &module.CodeSection[i]; codeSeg.GoFunc != nil { + compiled.hostFn = codeSeg.GoFunc + } else { + ir, err := irCompiler.Next() + if err != nil { + return err + } + err = e.lowerIR(ir, compiled) + if err != nil { + def := module.FunctionDefinition(uint32(i) + module.ImportFunctionCount) + return fmt.Errorf("failed to lower func[%s] to interpreterir: %w", def.DebugName(), err) + } + } + compiled.source = module + compiled.ensureTermination = ensureTermination + compiled.listener = lsn + compiled.index = imported + uint32(i) + } + e.addCompiledFunctions(module, funcs) + return nil +} + +// NewModuleEngine implements the same method as documented on wasm.Engine. +func (e *engine) NewModuleEngine(module *wasm.Module, instance *wasm.ModuleInstance) (wasm.ModuleEngine, error) { + me := &moduleEngine{ + parentEngine: e, + functions: make([]function, len(module.FunctionSection)+int(module.ImportFunctionCount)), + } + + codes, ok := e.getCompiledFunctions(module) + if !ok { + return nil, errors.New("source module must be compiled before instantiation") + } + + for i := range codes { + c := &codes[i] + offset := i + int(module.ImportFunctionCount) + typeIndex := module.FunctionSection[i] + me.functions[offset] = function{ + moduleInstance: instance, + typeID: instance.TypeIDs[typeIndex], + funcType: &module.TypeSection[typeIndex], + parent: c, + } + } + return me, nil +} + +// lowerIR lowers the interpreterir operations to engine friendly struct. +func (e *engine) lowerIR(ir *compilationResult, ret *compiledFunction) error { + // Copy the body from the result. + ret.body = make([]unionOperation, len(ir.Operations)) + copy(ret.body, ir.Operations) + // Also copy the offsets if necessary. + if offsets := ir.IROperationSourceOffsetsInWasmBinary; len(offsets) > 0 { + ret.offsetsInWasmBinary = make([]uint64, len(offsets)) + copy(ret.offsetsInWasmBinary, offsets) + } + + labelAddressResolutions := [labelKindNum][]uint64{} + + // First, we iterate all labels, and resolve the address. + for i := range ret.body { + op := &ret.body[i] + switch op.Kind { + case operationKindLabel: + label := label(op.U1) + address := uint64(i) + + kind, fid := label.Kind(), label.FrameID() + frameToAddresses := labelAddressResolutions[label.Kind()] + // Expand the slice if necessary. + if diff := fid - len(frameToAddresses) + 1; diff > 0 { + for j := 0; j < diff; j++ { + frameToAddresses = append(frameToAddresses, 0) + } + } + frameToAddresses[fid] = address + labelAddressResolutions[kind] = frameToAddresses + } + } + + // Then resolve the label as the index to the body. + for i := range ret.body { + op := &ret.body[i] + switch op.Kind { + case operationKindBr: + e.setLabelAddress(&op.U1, label(op.U1), labelAddressResolutions) + case operationKindBrIf: + e.setLabelAddress(&op.U1, label(op.U1), labelAddressResolutions) + e.setLabelAddress(&op.U2, label(op.U2), labelAddressResolutions) + case operationKindBrTable: + for j := 0; j < len(op.Us); j += 2 { + target := op.Us[j] + e.setLabelAddress(&op.Us[j], label(target), labelAddressResolutions) + } + } + } + return nil +} + +func (e *engine) setLabelAddress(op *uint64, label label, labelAddressResolutions [labelKindNum][]uint64) { + if label.IsReturnTarget() { + // Jmp to the end of the possible binary. + *op = math.MaxUint64 + } else { + *op = labelAddressResolutions[label.Kind()][label.FrameID()] + } +} + +// ResolveImportedFunction implements wasm.ModuleEngine. +func (e *moduleEngine) ResolveImportedFunction(index, indexInImportedModule wasm.Index, importedModuleEngine wasm.ModuleEngine) { + imported := importedModuleEngine.(*moduleEngine) + e.functions[index] = imported.functions[indexInImportedModule] +} + +// ResolveImportedMemory implements wasm.ModuleEngine. +func (e *moduleEngine) ResolveImportedMemory(wasm.ModuleEngine) {} + +// DoneInstantiation implements wasm.ModuleEngine. +func (e *moduleEngine) DoneInstantiation() {} + +// FunctionInstanceReference implements the same method as documented on wasm.ModuleEngine. +func (e *moduleEngine) FunctionInstanceReference(funcIndex wasm.Index) wasm.Reference { + return uintptr(unsafe.Pointer(&e.functions[funcIndex])) +} + +// NewFunction implements the same method as documented on wasm.ModuleEngine. +func (e *moduleEngine) NewFunction(index wasm.Index) (ce api.Function) { + // Note: The input parameters are pre-validated, so a compiled function is only absent on close. Updates to + // code on close aren't locked, neither is this read. + compiled := &e.functions[index] + return e.newCallEngine(compiled) +} + +// LookupFunction implements the same method as documented on wasm.ModuleEngine. +func (e *moduleEngine) LookupFunction(t *wasm.TableInstance, typeId wasm.FunctionTypeID, tableOffset wasm.Index) (*wasm.ModuleInstance, wasm.Index) { + if tableOffset >= uint32(len(t.References)) { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } + rawPtr := t.References[tableOffset] + if rawPtr == 0 { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } + + tf := functionFromUintptr(rawPtr) + if tf.typeID != typeId { + panic(wasmruntime.ErrRuntimeIndirectCallTypeMismatch) + } + return tf.moduleInstance, tf.parent.index +} + +// Definition implements the same method as documented on api.Function. +func (ce *callEngine) Definition() api.FunctionDefinition { + return ce.f.definition() +} + +func (f *function) definition() api.FunctionDefinition { + compiled := f.parent + return compiled.source.FunctionDefinition(compiled.index) +} + +// Call implements the same method as documented on api.Function. +func (ce *callEngine) Call(ctx context.Context, params ...uint64) (results []uint64, err error) { + ft := ce.f.funcType + if n := ft.ParamNumInUint64; n != len(params) { + return nil, fmt.Errorf("expected %d params, but passed %d", n, len(params)) + } + return ce.call(ctx, params, nil) +} + +// CallWithStack implements the same method as documented on api.Function. +func (ce *callEngine) CallWithStack(ctx context.Context, stack []uint64) error { + params, results, err := wasm.SplitCallStack(ce.f.funcType, stack) + if err != nil { + return err + } + _, err = ce.call(ctx, params, results) + return err +} + +func (ce *callEngine) call(ctx context.Context, params, results []uint64) (_ []uint64, err error) { + m := ce.f.moduleInstance + if ce.f.parent.ensureTermination { + select { + case <-ctx.Done(): + // If the provided context is already done, close the call context + // and return the error. + m.CloseWithCtxErr(ctx) + return nil, m.FailIfClosed() + default: + } + } + + if ctx.Value(expctxkeys.EnableSnapshotterKey{}) != nil { + ctx = context.WithValue(ctx, expctxkeys.SnapshotterKey{}, ce) + } + + defer func() { + // If the module closed during the call, and the call didn't err for another reason, set an ExitError. + if err == nil { + err = m.FailIfClosed() + } + // TODO: ^^ Will not fail if the function was imported from a closed module. + + if v := recover(); v != nil { + err = ce.recoverOnCall(ctx, m, v) + } + }() + + ce.pushValues(params) + + if ce.f.parent.ensureTermination { + done := m.CloseModuleOnCanceledOrTimeout(ctx) + defer done() + } + + ce.callFunction(ctx, m, ce.f) + + // This returns a safe copy of the results, instead of a slice view. If we + // returned a re-slice, the caller could accidentally or purposefully + // corrupt the stack of subsequent calls. + ft := ce.f.funcType + if results == nil && ft.ResultNumInUint64 > 0 { + results = make([]uint64, ft.ResultNumInUint64) + } + ce.popValues(results) + return results, nil +} + +// functionListenerInvocation captures arguments needed to perform function +// listener invocations when unwinding the call stack. +type functionListenerInvocation struct { + experimental.FunctionListener + def api.FunctionDefinition +} + +// recoverOnCall takes the recovered value `recoverOnCall`, and wraps it +// with the call frame stack traces. Also, reset the state of callEngine +// so that it can be used for the subsequent calls. +func (ce *callEngine) recoverOnCall(ctx context.Context, m *wasm.ModuleInstance, v interface{}) (err error) { + if s, ok := v.(*snapshot); ok { + // A snapshot that wasn't handled was created by a different call engine possibly from a nested wasm invocation, + // let it propagate up to be handled by the caller. + panic(s) + } + + builder := wasmdebug.NewErrorBuilder() + frameCount := len(ce.frames) + functionListeners := make([]functionListenerInvocation, 0, 16) + + if frameCount > wasmdebug.MaxFrames { + frameCount = wasmdebug.MaxFrames + } + for i := 0; i < frameCount; i++ { + frame := ce.popFrame() + f := frame.f + def := f.definition() + var sources []string + if parent := frame.f.parent; parent.body != nil && len(parent.offsetsInWasmBinary) > 0 { + sources = parent.source.DWARFLines.Line(parent.offsetsInWasmBinary[frame.pc]) + } + builder.AddFrame(def.DebugName(), def.ParamTypes(), def.ResultTypes(), sources) + if f.parent.listener != nil { + functionListeners = append(functionListeners, functionListenerInvocation{ + FunctionListener: f.parent.listener, + def: f.definition(), + }) + } + } + + err = builder.FromRecovered(v) + for i := range functionListeners { + functionListeners[i].Abort(ctx, m, functionListeners[i].def, err) + } + + // Allows the reuse of CallEngine. + ce.stack, ce.frames = ce.stack[:0], ce.frames[:0] + return +} + +func (ce *callEngine) callFunction(ctx context.Context, m *wasm.ModuleInstance, f *function) { + if f.parent.hostFn != nil { + ce.callGoFuncWithStack(ctx, m, f) + } else if lsn := f.parent.listener; lsn != nil { + ce.callNativeFuncWithListener(ctx, m, f, lsn) + } else { + ce.callNativeFunc(ctx, m, f) + } +} + +func (ce *callEngine) callGoFunc(ctx context.Context, m *wasm.ModuleInstance, f *function, stack []uint64) { + typ := f.funcType + lsn := f.parent.listener + if lsn != nil { + params := stack[:typ.ParamNumInUint64] + ce.stackIterator.reset(ce.stack, ce.frames, f) + lsn.Before(ctx, m, f.definition(), params, &ce.stackIterator) + ce.stackIterator.clear() + } + frame := &callFrame{f: f, base: len(ce.stack)} + ce.pushFrame(frame) + + fn := f.parent.hostFn + switch fn := fn.(type) { + case api.GoModuleFunction: + fn.Call(ctx, m, stack) + case api.GoFunction: + fn.Call(ctx, stack) + } + + ce.popFrame() + if lsn != nil { + // TODO: This doesn't get the error due to use of panic to propagate them. + results := stack[:typ.ResultNumInUint64] + lsn.After(ctx, m, f.definition(), results) + } +} + +func (ce *callEngine) callNativeFunc(ctx context.Context, m *wasm.ModuleInstance, f *function) { + frame := &callFrame{f: f, base: len(ce.stack)} + moduleInst := f.moduleInstance + functions := moduleInst.Engine.(*moduleEngine).functions + memoryInst := moduleInst.MemoryInstance + globals := moduleInst.Globals + tables := moduleInst.Tables + typeIDs := moduleInst.TypeIDs + dataInstances := moduleInst.DataInstances + elementInstances := moduleInst.ElementInstances + ce.pushFrame(frame) + body := frame.f.parent.body + bodyLen := uint64(len(body)) + for frame.pc < bodyLen { + op := &body[frame.pc] + // TODO: add description of each operation/case + // on, for example, how many args are used, + // how the stack is modified, etc. + switch op.Kind { + case operationKindBuiltinFunctionCheckExitCode: + if err := m.FailIfClosed(); err != nil { + panic(err) + } + frame.pc++ + case operationKindUnreachable: + panic(wasmruntime.ErrRuntimeUnreachable) + case operationKindBr: + frame.pc = op.U1 + case operationKindBrIf: + if ce.popValue() > 0 { + ce.drop(op.U3) + frame.pc = op.U1 + } else { + frame.pc = op.U2 + } + case operationKindBrTable: + v := ce.popValue() + defaultAt := uint64(len(op.Us))/2 - 1 + if v > defaultAt { + v = defaultAt + } + v *= 2 + ce.drop(op.Us[v+1]) + frame.pc = op.Us[v] + case operationKindCall: + func() { + if ctx.Value(expctxkeys.EnableSnapshotterKey{}) != nil { + defer func() { + if r := recover(); r != nil { + if s, ok := r.(*snapshot); ok && s.ce == ce { + s.doRestore() + frame = ce.frames[len(ce.frames)-1] + body = frame.f.parent.body + bodyLen = uint64(len(body)) + } else { + panic(r) + } + } + }() + } + ce.callFunction(ctx, f.moduleInstance, &functions[op.U1]) + }() + frame.pc++ + case operationKindCallIndirect: + offset := ce.popValue() + table := tables[op.U2] + if offset >= uint64(len(table.References)) { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } + rawPtr := table.References[offset] + if rawPtr == 0 { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } + + tf := functionFromUintptr(rawPtr) + if tf.typeID != typeIDs[op.U1] { + panic(wasmruntime.ErrRuntimeIndirectCallTypeMismatch) + } + + ce.callFunction(ctx, f.moduleInstance, tf) + frame.pc++ + case operationKindDrop: + ce.drop(op.U1) + frame.pc++ + case operationKindSelect: + c := ce.popValue() + if op.B3 { // Target is vector. + x2Hi, x2Lo := ce.popValue(), ce.popValue() + if c == 0 { + _, _ = ce.popValue(), ce.popValue() // discard the x1's lo and hi bits. + ce.pushValue(x2Lo) + ce.pushValue(x2Hi) + } + } else { + v2 := ce.popValue() + if c == 0 { + _ = ce.popValue() + ce.pushValue(v2) + } + } + frame.pc++ + case operationKindPick: + index := len(ce.stack) - 1 - int(op.U1) + ce.pushValue(ce.stack[index]) + if op.B3 { // V128 value target. + ce.pushValue(ce.stack[index+1]) + } + frame.pc++ + case operationKindSet: + if op.B3 { // V128 value target. + lowIndex := len(ce.stack) - 1 - int(op.U1) + highIndex := lowIndex + 1 + hi, lo := ce.popValue(), ce.popValue() + ce.stack[lowIndex], ce.stack[highIndex] = lo, hi + } else { + index := len(ce.stack) - 1 - int(op.U1) + ce.stack[index] = ce.popValue() + } + frame.pc++ + case operationKindGlobalGet: + g := globals[op.U1] + ce.pushValue(g.Val) + if g.Type.ValType == wasm.ValueTypeV128 { + ce.pushValue(g.ValHi) + } + frame.pc++ + case operationKindGlobalSet: + g := globals[op.U1] + if g.Type.ValType == wasm.ValueTypeV128 { + g.ValHi = ce.popValue() + } + g.Val = ce.popValue() + frame.pc++ + case operationKindLoad: + offset := ce.popMemoryOffset(op) + switch unsignedType(op.B1) { + case unsignedTypeI32, unsignedTypeF32: + if val, ok := memoryInst.ReadUint32Le(offset); !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } else { + ce.pushValue(uint64(val)) + } + case unsignedTypeI64, unsignedTypeF64: + if val, ok := memoryInst.ReadUint64Le(offset); !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } else { + ce.pushValue(val) + } + } + frame.pc++ + case operationKindLoad8: + val, ok := memoryInst.ReadByte(ce.popMemoryOffset(op)) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + + switch signedInt(op.B1) { + case signedInt32: + ce.pushValue(uint64(uint32(int8(val)))) + case signedInt64: + ce.pushValue(uint64(int8(val))) + case signedUint32, signedUint64: + ce.pushValue(uint64(val)) + } + frame.pc++ + case operationKindLoad16: + + val, ok := memoryInst.ReadUint16Le(ce.popMemoryOffset(op)) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + + switch signedInt(op.B1) { + case signedInt32: + ce.pushValue(uint64(uint32(int16(val)))) + case signedInt64: + ce.pushValue(uint64(int16(val))) + case signedUint32, signedUint64: + ce.pushValue(uint64(val)) + } + frame.pc++ + case operationKindLoad32: + val, ok := memoryInst.ReadUint32Le(ce.popMemoryOffset(op)) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + + if op.B1 == 1 { // Signed + ce.pushValue(uint64(int32(val))) + } else { + ce.pushValue(uint64(val)) + } + frame.pc++ + case operationKindStore: + val := ce.popValue() + offset := ce.popMemoryOffset(op) + switch unsignedType(op.B1) { + case unsignedTypeI32, unsignedTypeF32: + if !memoryInst.WriteUint32Le(offset, uint32(val)) { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + case unsignedTypeI64, unsignedTypeF64: + if !memoryInst.WriteUint64Le(offset, val) { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + } + frame.pc++ + case operationKindStore8: + val := byte(ce.popValue()) + offset := ce.popMemoryOffset(op) + if !memoryInst.WriteByte(offset, val) { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + frame.pc++ + case operationKindStore16: + val := uint16(ce.popValue()) + offset := ce.popMemoryOffset(op) + if !memoryInst.WriteUint16Le(offset, val) { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + frame.pc++ + case operationKindStore32: + val := uint32(ce.popValue()) + offset := ce.popMemoryOffset(op) + if !memoryInst.WriteUint32Le(offset, val) { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + frame.pc++ + case operationKindMemorySize: + ce.pushValue(uint64(memoryInst.Pages())) + frame.pc++ + case operationKindMemoryGrow: + n := ce.popValue() + if res, ok := memoryInst.Grow(uint32(n)); !ok { + ce.pushValue(uint64(0xffffffff)) // = -1 in signed 32-bit integer. + } else { + ce.pushValue(uint64(res)) + } + frame.pc++ + case operationKindConstI32, operationKindConstI64, + operationKindConstF32, operationKindConstF64: + ce.pushValue(op.U1) + frame.pc++ + case operationKindEq: + var b bool + switch unsignedType(op.B1) { + case unsignedTypeI32: + v2, v1 := ce.popValue(), ce.popValue() + b = uint32(v1) == uint32(v2) + case unsignedTypeI64: + v2, v1 := ce.popValue(), ce.popValue() + b = v1 == v2 + case unsignedTypeF32: + v2, v1 := ce.popValue(), ce.popValue() + b = math.Float32frombits(uint32(v2)) == math.Float32frombits(uint32(v1)) + case unsignedTypeF64: + v2, v1 := ce.popValue(), ce.popValue() + b = math.Float64frombits(v2) == math.Float64frombits(v1) + } + if b { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindNe: + var b bool + switch unsignedType(op.B1) { + case unsignedTypeI32, unsignedTypeI64: + v2, v1 := ce.popValue(), ce.popValue() + b = v1 != v2 + case unsignedTypeF32: + v2, v1 := ce.popValue(), ce.popValue() + b = math.Float32frombits(uint32(v2)) != math.Float32frombits(uint32(v1)) + case unsignedTypeF64: + v2, v1 := ce.popValue(), ce.popValue() + b = math.Float64frombits(v2) != math.Float64frombits(v1) + } + if b { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindEqz: + if ce.popValue() == 0 { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindLt: + v2 := ce.popValue() + v1 := ce.popValue() + var b bool + switch signedType(op.B1) { + case signedTypeInt32: + b = int32(v1) < int32(v2) + case signedTypeInt64: + b = int64(v1) < int64(v2) + case signedTypeUint32, signedTypeUint64: + b = v1 < v2 + case signedTypeFloat32: + b = math.Float32frombits(uint32(v1)) < math.Float32frombits(uint32(v2)) + case signedTypeFloat64: + b = math.Float64frombits(v1) < math.Float64frombits(v2) + } + if b { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindGt: + v2 := ce.popValue() + v1 := ce.popValue() + var b bool + switch signedType(op.B1) { + case signedTypeInt32: + b = int32(v1) > int32(v2) + case signedTypeInt64: + b = int64(v1) > int64(v2) + case signedTypeUint32, signedTypeUint64: + b = v1 > v2 + case signedTypeFloat32: + b = math.Float32frombits(uint32(v1)) > math.Float32frombits(uint32(v2)) + case signedTypeFloat64: + b = math.Float64frombits(v1) > math.Float64frombits(v2) + } + if b { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindLe: + v2 := ce.popValue() + v1 := ce.popValue() + var b bool + switch signedType(op.B1) { + case signedTypeInt32: + b = int32(v1) <= int32(v2) + case signedTypeInt64: + b = int64(v1) <= int64(v2) + case signedTypeUint32, signedTypeUint64: + b = v1 <= v2 + case signedTypeFloat32: + b = math.Float32frombits(uint32(v1)) <= math.Float32frombits(uint32(v2)) + case signedTypeFloat64: + b = math.Float64frombits(v1) <= math.Float64frombits(v2) + } + if b { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindGe: + v2 := ce.popValue() + v1 := ce.popValue() + var b bool + switch signedType(op.B1) { + case signedTypeInt32: + b = int32(v1) >= int32(v2) + case signedTypeInt64: + b = int64(v1) >= int64(v2) + case signedTypeUint32, signedTypeUint64: + b = v1 >= v2 + case signedTypeFloat32: + b = math.Float32frombits(uint32(v1)) >= math.Float32frombits(uint32(v2)) + case signedTypeFloat64: + b = math.Float64frombits(v1) >= math.Float64frombits(v2) + } + if b { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindAdd: + v2 := ce.popValue() + v1 := ce.popValue() + switch unsignedType(op.B1) { + case unsignedTypeI32: + v := uint32(v1) + uint32(v2) + ce.pushValue(uint64(v)) + case unsignedTypeI64: + ce.pushValue(v1 + v2) + case unsignedTypeF32: + ce.pushValue(addFloat32bits(uint32(v1), uint32(v2))) + case unsignedTypeF64: + v := math.Float64frombits(v1) + math.Float64frombits(v2) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindSub: + v2 := ce.popValue() + v1 := ce.popValue() + switch unsignedType(op.B1) { + case unsignedTypeI32: + ce.pushValue(uint64(uint32(v1) - uint32(v2))) + case unsignedTypeI64: + ce.pushValue(v1 - v2) + case unsignedTypeF32: + ce.pushValue(subFloat32bits(uint32(v1), uint32(v2))) + case unsignedTypeF64: + v := math.Float64frombits(v1) - math.Float64frombits(v2) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindMul: + v2 := ce.popValue() + v1 := ce.popValue() + switch unsignedType(op.B1) { + case unsignedTypeI32: + ce.pushValue(uint64(uint32(v1) * uint32(v2))) + case unsignedTypeI64: + ce.pushValue(v1 * v2) + case unsignedTypeF32: + ce.pushValue(mulFloat32bits(uint32(v1), uint32(v2))) + case unsignedTypeF64: + v := math.Float64frombits(v2) * math.Float64frombits(v1) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindClz: + v := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(bits.LeadingZeros32(uint32(v)))) + } else { + // unsignedInt64 + ce.pushValue(uint64(bits.LeadingZeros64(v))) + } + frame.pc++ + case operationKindCtz: + v := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(bits.TrailingZeros32(uint32(v)))) + } else { + // unsignedInt64 + ce.pushValue(uint64(bits.TrailingZeros64(v))) + } + frame.pc++ + case operationKindPopcnt: + v := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(bits.OnesCount32(uint32(v)))) + } else { + // unsignedInt64 + ce.pushValue(uint64(bits.OnesCount64(v))) + } + frame.pc++ + case operationKindDiv: + // If an integer, check we won't divide by zero. + t := signedType(op.B1) + v2, v1 := ce.popValue(), ce.popValue() + switch t { + case signedTypeFloat32, signedTypeFloat64: // not integers + default: + if v2 == 0 { + panic(wasmruntime.ErrRuntimeIntegerDivideByZero) + } + } + + switch t { + case signedTypeInt32: + d := int32(v2) + n := int32(v1) + if n == math.MinInt32 && d == -1 { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + ce.pushValue(uint64(uint32(n / d))) + case signedTypeInt64: + d := int64(v2) + n := int64(v1) + if n == math.MinInt64 && d == -1 { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + ce.pushValue(uint64(n / d)) + case signedTypeUint32: + d := uint32(v2) + n := uint32(v1) + ce.pushValue(uint64(n / d)) + case signedTypeUint64: + d := v2 + n := v1 + ce.pushValue(n / d) + case signedTypeFloat32: + ce.pushValue(divFloat32bits(uint32(v1), uint32(v2))) + case signedTypeFloat64: + ce.pushValue(math.Float64bits(math.Float64frombits(v1) / math.Float64frombits(v2))) + } + frame.pc++ + case operationKindRem: + v2, v1 := ce.popValue(), ce.popValue() + if v2 == 0 { + panic(wasmruntime.ErrRuntimeIntegerDivideByZero) + } + switch signedInt(op.B1) { + case signedInt32: + d := int32(v2) + n := int32(v1) + ce.pushValue(uint64(uint32(n % d))) + case signedInt64: + d := int64(v2) + n := int64(v1) + ce.pushValue(uint64(n % d)) + case signedUint32: + d := uint32(v2) + n := uint32(v1) + ce.pushValue(uint64(n % d)) + case signedUint64: + d := v2 + n := v1 + ce.pushValue(n % d) + } + frame.pc++ + case operationKindAnd: + v2 := ce.popValue() + v1 := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(uint32(v2) & uint32(v1))) + } else { + // unsignedInt64 + ce.pushValue(uint64(v2 & v1)) + } + frame.pc++ + case operationKindOr: + v2 := ce.popValue() + v1 := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(uint32(v2) | uint32(v1))) + } else { + // unsignedInt64 + ce.pushValue(uint64(v2 | v1)) + } + frame.pc++ + case operationKindXor: + v2 := ce.popValue() + v1 := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(uint32(v2) ^ uint32(v1))) + } else { + // unsignedInt64 + ce.pushValue(uint64(v2 ^ v1)) + } + frame.pc++ + case operationKindShl: + v2 := ce.popValue() + v1 := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(uint32(v1) << (uint32(v2) % 32))) + } else { + // unsignedInt64 + ce.pushValue(v1 << (v2 % 64)) + } + frame.pc++ + case operationKindShr: + v2 := ce.popValue() + v1 := ce.popValue() + switch signedInt(op.B1) { + case signedInt32: + ce.pushValue(uint64(uint32(int32(v1) >> (uint32(v2) % 32)))) + case signedInt64: + ce.pushValue(uint64(int64(v1) >> (v2 % 64))) + case signedUint32: + ce.pushValue(uint64(uint32(v1) >> (uint32(v2) % 32))) + case signedUint64: + ce.pushValue(v1 >> (v2 % 64)) + } + frame.pc++ + case operationKindRotl: + v2 := ce.popValue() + v1 := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(bits.RotateLeft32(uint32(v1), int(v2)))) + } else { + // unsignedInt64 + ce.pushValue(uint64(bits.RotateLeft64(v1, int(v2)))) + } + frame.pc++ + case operationKindRotr: + v2 := ce.popValue() + v1 := ce.popValue() + if op.B1 == 0 { + // unsignedInt32 + ce.pushValue(uint64(bits.RotateLeft32(uint32(v1), -int(v2)))) + } else { + // unsignedInt64 + ce.pushValue(uint64(bits.RotateLeft64(v1, -int(v2)))) + } + frame.pc++ + case operationKindAbs: + if op.B1 == 0 { + // float32 + const mask uint32 = 1 << 31 + ce.pushValue(uint64(uint32(ce.popValue()) &^ mask)) + } else { + // float64 + const mask uint64 = 1 << 63 + ce.pushValue(ce.popValue() &^ mask) + } + frame.pc++ + case operationKindNeg: + if op.B1 == 0 { + // float32 + v := -math.Float32frombits(uint32(ce.popValue())) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := -math.Float64frombits(ce.popValue()) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindCeil: + if op.B1 == 0 { + // float32 + v := moremath.WasmCompatCeilF32(math.Float32frombits(uint32(ce.popValue()))) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := moremath.WasmCompatCeilF64(math.Float64frombits(ce.popValue())) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindFloor: + if op.B1 == 0 { + // float32 + v := moremath.WasmCompatFloorF32(math.Float32frombits(uint32(ce.popValue()))) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := moremath.WasmCompatFloorF64(math.Float64frombits(ce.popValue())) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindTrunc: + if op.B1 == 0 { + // float32 + v := moremath.WasmCompatTruncF32(math.Float32frombits(uint32(ce.popValue()))) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := moremath.WasmCompatTruncF64(math.Float64frombits(ce.popValue())) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindNearest: + if op.B1 == 0 { + // float32 + f := math.Float32frombits(uint32(ce.popValue())) + ce.pushValue(uint64(math.Float32bits(moremath.WasmCompatNearestF32(f)))) + } else { + // float64 + f := math.Float64frombits(ce.popValue()) + ce.pushValue(math.Float64bits(moremath.WasmCompatNearestF64(f))) + } + frame.pc++ + case operationKindSqrt: + if op.B1 == 0 { + // float32 + v := math.Sqrt(float64(math.Float32frombits(uint32(ce.popValue())))) + ce.pushValue(uint64(math.Float32bits(float32(v)))) + } else { + // float64 + v := math.Sqrt(math.Float64frombits(ce.popValue())) + ce.pushValue(math.Float64bits(v)) + } + frame.pc++ + case operationKindMin: + if op.B1 == 0 { + // float32 + ce.pushValue(wasmCompatMin32bits(uint32(ce.popValue()), uint32(ce.popValue()))) + } else { + v2 := math.Float64frombits(ce.popValue()) + v1 := math.Float64frombits(ce.popValue()) + ce.pushValue(math.Float64bits(moremath.WasmCompatMin64(v1, v2))) + } + frame.pc++ + case operationKindMax: + if op.B1 == 0 { + ce.pushValue(wasmCompatMax32bits(uint32(ce.popValue()), uint32(ce.popValue()))) + } else { + // float64 + v2 := math.Float64frombits(ce.popValue()) + v1 := math.Float64frombits(ce.popValue()) + ce.pushValue(math.Float64bits(moremath.WasmCompatMax64(v1, v2))) + } + frame.pc++ + case operationKindCopysign: + if op.B1 == 0 { + // float32 + v2 := uint32(ce.popValue()) + v1 := uint32(ce.popValue()) + const signbit = 1 << 31 + ce.pushValue(uint64(v1&^signbit | v2&signbit)) + } else { + // float64 + v2 := ce.popValue() + v1 := ce.popValue() + const signbit = 1 << 63 + ce.pushValue(v1&^signbit | v2&signbit) + } + frame.pc++ + case operationKindI32WrapFromI64: + ce.pushValue(uint64(uint32(ce.popValue()))) + frame.pc++ + case operationKindITruncFromF: + if op.B1 == 0 { + // float32 + switch signedInt(op.B2) { + case signedInt32: + v := math.Trunc(float64(math.Float32frombits(uint32(ce.popValue())))) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + v = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < math.MinInt32 || v > math.MaxInt32 { + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing sources. + if v < 0 { + v = math.MinInt32 + } else { + v = math.MaxInt32 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(uint64(uint32(int32(v)))) + case signedInt64: + v := math.Trunc(float64(math.Float32frombits(uint32(ce.popValue())))) + res := int64(v) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + res = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < math.MinInt64 || v >= math.MaxInt64 { + // Note: math.MaxInt64 is rounded up to math.MaxInt64+1 in 64-bit float representation, + // and that's why we use '>=' not '>' to check overflow. + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing sources. + if v < 0 { + res = math.MinInt64 + } else { + res = math.MaxInt64 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(uint64(res)) + case signedUint32: + v := math.Trunc(float64(math.Float32frombits(uint32(ce.popValue())))) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + v = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < 0 || v > math.MaxUint32 { + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing source. + if v < 0 { + v = 0 + } else { + v = math.MaxUint32 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(uint64(uint32(v))) + case signedUint64: + v := math.Trunc(float64(math.Float32frombits(uint32(ce.popValue())))) + res := uint64(v) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + res = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < 0 || v >= math.MaxUint64 { + // Note: math.MaxUint64 is rounded up to math.MaxUint64+1 in 64-bit float representation, + // and that's why we use '>=' not '>' to check overflow. + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing source. + if v < 0 { + res = 0 + } else { + res = math.MaxUint64 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(res) + } + } else { + // float64 + switch signedInt(op.B2) { + case signedInt32: + v := math.Trunc(math.Float64frombits(ce.popValue())) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + v = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < math.MinInt32 || v > math.MaxInt32 { + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing source. + if v < 0 { + v = math.MinInt32 + } else { + v = math.MaxInt32 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(uint64(uint32(int32(v)))) + case signedInt64: + v := math.Trunc(math.Float64frombits(ce.popValue())) + res := int64(v) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + res = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < math.MinInt64 || v >= math.MaxInt64 { + // Note: math.MaxInt64 is rounded up to math.MaxInt64+1 in 64-bit float representation, + // and that's why we use '>=' not '>' to check overflow. + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing source. + if v < 0 { + res = math.MinInt64 + } else { + res = math.MaxInt64 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(uint64(res)) + case signedUint32: + v := math.Trunc(math.Float64frombits(ce.popValue())) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + v = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < 0 || v > math.MaxUint32 { + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing source. + if v < 0 { + v = 0 + } else { + v = math.MaxUint32 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(uint64(uint32(v))) + case signedUint64: + v := math.Trunc(math.Float64frombits(ce.popValue())) + res := uint64(v) + if math.IsNaN(v) { // NaN cannot be compared with themselves, so we have to use IsNaN + if op.B3 { + // non-trapping conversion must cast nan to zero. + res = 0 + } else { + panic(wasmruntime.ErrRuntimeInvalidConversionToInteger) + } + } else if v < 0 || v >= math.MaxUint64 { + // Note: math.MaxUint64 is rounded up to math.MaxUint64+1 in 64-bit float representation, + // and that's why we use '>=' not '>' to check overflow. + if op.B3 { + // non-trapping conversion must "saturate" the value for overflowing source. + if v < 0 { + res = 0 + } else { + res = math.MaxUint64 + } + } else { + panic(wasmruntime.ErrRuntimeIntegerOverflow) + } + } + ce.pushValue(res) + } + } + frame.pc++ + case operationKindFConvertFromI: + switch signedInt(op.B1) { + case signedInt32: + if op.B2 == 0 { + // float32 + v := float32(int32(ce.popValue())) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := float64(int32(ce.popValue())) + ce.pushValue(math.Float64bits(v)) + } + case signedInt64: + if op.B2 == 0 { + // float32 + v := float32(int64(ce.popValue())) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := float64(int64(ce.popValue())) + ce.pushValue(math.Float64bits(v)) + } + case signedUint32: + if op.B2 == 0 { + // float32 + v := float32(uint32(ce.popValue())) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := float64(uint32(ce.popValue())) + ce.pushValue(math.Float64bits(v)) + } + case signedUint64: + if op.B2 == 0 { + // float32 + v := float32(ce.popValue()) + ce.pushValue(uint64(math.Float32bits(v))) + } else { + // float64 + v := float64(ce.popValue()) + ce.pushValue(math.Float64bits(v)) + } + } + frame.pc++ + case operationKindF32DemoteFromF64: + v := float32(math.Float64frombits(ce.popValue())) + ce.pushValue(uint64(math.Float32bits(v))) + frame.pc++ + case operationKindF64PromoteFromF32: + v := float64(math.Float32frombits(uint32(ce.popValue()))) + ce.pushValue(math.Float64bits(v)) + frame.pc++ + case operationKindExtend: + if op.B1 == 1 { + // Signed. + v := int64(int32(ce.popValue())) + ce.pushValue(uint64(v)) + } else { + v := uint64(uint32(ce.popValue())) + ce.pushValue(v) + } + frame.pc++ + case operationKindSignExtend32From8: + v := uint32(int8(ce.popValue())) + ce.pushValue(uint64(v)) + frame.pc++ + case operationKindSignExtend32From16: + v := uint32(int16(ce.popValue())) + ce.pushValue(uint64(v)) + frame.pc++ + case operationKindSignExtend64From8: + v := int64(int8(ce.popValue())) + ce.pushValue(uint64(v)) + frame.pc++ + case operationKindSignExtend64From16: + v := int64(int16(ce.popValue())) + ce.pushValue(uint64(v)) + frame.pc++ + case operationKindSignExtend64From32: + v := int64(int32(ce.popValue())) + ce.pushValue(uint64(v)) + frame.pc++ + case operationKindMemoryInit: + dataInstance := dataInstances[op.U1] + copySize := ce.popValue() + inDataOffset := ce.popValue() + inMemoryOffset := ce.popValue() + if inDataOffset+copySize > uint64(len(dataInstance)) || + inMemoryOffset+copySize > uint64(len(memoryInst.Buffer)) { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } else if copySize != 0 { + copy(memoryInst.Buffer[inMemoryOffset:inMemoryOffset+copySize], dataInstance[inDataOffset:]) + } + frame.pc++ + case operationKindDataDrop: + dataInstances[op.U1] = nil + frame.pc++ + case operationKindMemoryCopy: + memLen := uint64(len(memoryInst.Buffer)) + copySize := ce.popValue() + sourceOffset := ce.popValue() + destinationOffset := ce.popValue() + if sourceOffset+copySize > memLen || destinationOffset+copySize > memLen { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } else if copySize != 0 { + copy(memoryInst.Buffer[destinationOffset:], + memoryInst.Buffer[sourceOffset:sourceOffset+copySize]) + } + frame.pc++ + case operationKindMemoryFill: + fillSize := ce.popValue() + value := byte(ce.popValue()) + offset := ce.popValue() + if fillSize+offset > uint64(len(memoryInst.Buffer)) { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } else if fillSize != 0 { + // Uses the copy trick for faster filling buffer. + // https://gist.github.com/taylorza/df2f89d5f9ab3ffd06865062a4cf015d + buf := memoryInst.Buffer[offset : offset+fillSize] + buf[0] = value + for i := 1; i < len(buf); i *= 2 { + copy(buf[i:], buf[:i]) + } + } + frame.pc++ + case operationKindTableInit: + elementInstance := elementInstances[op.U1] + copySize := ce.popValue() + inElementOffset := ce.popValue() + inTableOffset := ce.popValue() + table := tables[op.U2] + if inElementOffset+copySize > uint64(len(elementInstance)) || + inTableOffset+copySize > uint64(len(table.References)) { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } else if copySize != 0 { + copy(table.References[inTableOffset:inTableOffset+copySize], elementInstance[inElementOffset:]) + } + frame.pc++ + case operationKindElemDrop: + elementInstances[op.U1] = nil + frame.pc++ + case operationKindTableCopy: + srcTable, dstTable := tables[op.U1].References, tables[op.U2].References + copySize := ce.popValue() + sourceOffset := ce.popValue() + destinationOffset := ce.popValue() + if sourceOffset+copySize > uint64(len(srcTable)) || destinationOffset+copySize > uint64(len(dstTable)) { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } else if copySize != 0 { + copy(dstTable[destinationOffset:], srcTable[sourceOffset:sourceOffset+copySize]) + } + frame.pc++ + case operationKindRefFunc: + ce.pushValue(uint64(uintptr(unsafe.Pointer(&functions[op.U1])))) + frame.pc++ + case operationKindTableGet: + table := tables[op.U1] + + offset := ce.popValue() + if offset >= uint64(len(table.References)) { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } + + ce.pushValue(uint64(table.References[offset])) + frame.pc++ + case operationKindTableSet: + table := tables[op.U1] + ref := ce.popValue() + + offset := ce.popValue() + if offset >= uint64(len(table.References)) { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } + + table.References[offset] = uintptr(ref) // externrefs are opaque uint64. + frame.pc++ + case operationKindTableSize: + table := tables[op.U1] + ce.pushValue(uint64(len(table.References))) + frame.pc++ + case operationKindTableGrow: + table := tables[op.U1] + num, ref := ce.popValue(), ce.popValue() + ret := table.Grow(uint32(num), uintptr(ref)) + ce.pushValue(uint64(ret)) + frame.pc++ + case operationKindTableFill: + table := tables[op.U1] + num := ce.popValue() + ref := uintptr(ce.popValue()) + offset := ce.popValue() + if num+offset > uint64(len(table.References)) { + panic(wasmruntime.ErrRuntimeInvalidTableAccess) + } else if num > 0 { + // Uses the copy trick for faster filling the region with the value. + // https://gist.github.com/taylorza/df2f89d5f9ab3ffd06865062a4cf015d + targetRegion := table.References[offset : offset+num] + targetRegion[0] = ref + for i := 1; i < len(targetRegion); i *= 2 { + copy(targetRegion[i:], targetRegion[:i]) + } + } + frame.pc++ + case operationKindV128Const: + lo, hi := op.U1, op.U2 + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Add: + yHigh, yLow := ce.popValue(), ce.popValue() + xHigh, xLow := ce.popValue(), ce.popValue() + switch op.B1 { + case shapeI8x16: + ce.pushValue( + uint64(uint8(xLow>>8)+uint8(yLow>>8))<<8 | uint64(uint8(xLow)+uint8(yLow)) | + uint64(uint8(xLow>>24)+uint8(yLow>>24))<<24 | uint64(uint8(xLow>>16)+uint8(yLow>>16))<<16 | + uint64(uint8(xLow>>40)+uint8(yLow>>40))<<40 | uint64(uint8(xLow>>32)+uint8(yLow>>32))<<32 | + uint64(uint8(xLow>>56)+uint8(yLow>>56))<<56 | uint64(uint8(xLow>>48)+uint8(yLow>>48))<<48, + ) + ce.pushValue( + uint64(uint8(xHigh>>8)+uint8(yHigh>>8))<<8 | uint64(uint8(xHigh)+uint8(yHigh)) | + uint64(uint8(xHigh>>24)+uint8(yHigh>>24))<<24 | uint64(uint8(xHigh>>16)+uint8(yHigh>>16))<<16 | + uint64(uint8(xHigh>>40)+uint8(yHigh>>40))<<40 | uint64(uint8(xHigh>>32)+uint8(yHigh>>32))<<32 | + uint64(uint8(xHigh>>56)+uint8(yHigh>>56))<<56 | uint64(uint8(xHigh>>48)+uint8(yHigh>>48))<<48, + ) + case shapeI16x8: + ce.pushValue( + uint64(uint16(xLow>>16+yLow>>16))<<16 | uint64(uint16(xLow)+uint16(yLow)) | + uint64(uint16(xLow>>48+yLow>>48))<<48 | uint64(uint16(xLow>>32+yLow>>32))<<32, + ) + ce.pushValue( + uint64(uint16(xHigh>>16)+uint16(yHigh>>16))<<16 | uint64(uint16(xHigh)+uint16(yHigh)) | + uint64(uint16(xHigh>>48)+uint16(yHigh>>48))<<48 | uint64(uint16(xHigh>>32)+uint16(yHigh>>32))<<32, + ) + case shapeI32x4: + ce.pushValue(uint64(uint32(xLow>>32)+uint32(yLow>>32))<<32 | uint64(uint32(xLow)+uint32(yLow))) + ce.pushValue(uint64(uint32(xHigh>>32)+uint32(yHigh>>32))<<32 | uint64(uint32(xHigh)+uint32(yHigh))) + case shapeI64x2: + ce.pushValue(xLow + yLow) + ce.pushValue(xHigh + yHigh) + case shapeF32x4: + ce.pushValue( + addFloat32bits(uint32(xLow), uint32(yLow)) | addFloat32bits(uint32(xLow>>32), uint32(yLow>>32))<<32, + ) + ce.pushValue( + addFloat32bits(uint32(xHigh), uint32(yHigh)) | addFloat32bits(uint32(xHigh>>32), uint32(yHigh>>32))<<32, + ) + case shapeF64x2: + ce.pushValue(math.Float64bits(math.Float64frombits(xLow) + math.Float64frombits(yLow))) + ce.pushValue(math.Float64bits(math.Float64frombits(xHigh) + math.Float64frombits(yHigh))) + } + frame.pc++ + case operationKindV128Sub: + yHigh, yLow := ce.popValue(), ce.popValue() + xHigh, xLow := ce.popValue(), ce.popValue() + switch op.B1 { + case shapeI8x16: + ce.pushValue( + uint64(uint8(xLow>>8)-uint8(yLow>>8))<<8 | uint64(uint8(xLow)-uint8(yLow)) | + uint64(uint8(xLow>>24)-uint8(yLow>>24))<<24 | uint64(uint8(xLow>>16)-uint8(yLow>>16))<<16 | + uint64(uint8(xLow>>40)-uint8(yLow>>40))<<40 | uint64(uint8(xLow>>32)-uint8(yLow>>32))<<32 | + uint64(uint8(xLow>>56)-uint8(yLow>>56))<<56 | uint64(uint8(xLow>>48)-uint8(yLow>>48))<<48, + ) + ce.pushValue( + uint64(uint8(xHigh>>8)-uint8(yHigh>>8))<<8 | uint64(uint8(xHigh)-uint8(yHigh)) | + uint64(uint8(xHigh>>24)-uint8(yHigh>>24))<<24 | uint64(uint8(xHigh>>16)-uint8(yHigh>>16))<<16 | + uint64(uint8(xHigh>>40)-uint8(yHigh>>40))<<40 | uint64(uint8(xHigh>>32)-uint8(yHigh>>32))<<32 | + uint64(uint8(xHigh>>56)-uint8(yHigh>>56))<<56 | uint64(uint8(xHigh>>48)-uint8(yHigh>>48))<<48, + ) + case shapeI16x8: + ce.pushValue( + uint64(uint16(xLow>>16)-uint16(yLow>>16))<<16 | uint64(uint16(xLow)-uint16(yLow)) | + uint64(uint16(xLow>>48)-uint16(yLow>>48))<<48 | uint64(uint16(xLow>>32)-uint16(yLow>>32))<<32, + ) + ce.pushValue( + uint64(uint16(xHigh>>16)-uint16(yHigh>>16))<<16 | uint64(uint16(xHigh)-uint16(yHigh)) | + uint64(uint16(xHigh>>48)-uint16(yHigh>>48))<<48 | uint64(uint16(xHigh>>32)-uint16(yHigh>>32))<<32, + ) + case shapeI32x4: + ce.pushValue(uint64(uint32(xLow>>32-yLow>>32))<<32 | uint64(uint32(xLow)-uint32(yLow))) + ce.pushValue(uint64(uint32(xHigh>>32-yHigh>>32))<<32 | uint64(uint32(xHigh)-uint32(yHigh))) + case shapeI64x2: + ce.pushValue(xLow - yLow) + ce.pushValue(xHigh - yHigh) + case shapeF32x4: + ce.pushValue( + subFloat32bits(uint32(xLow), uint32(yLow)) | subFloat32bits(uint32(xLow>>32), uint32(yLow>>32))<<32, + ) + ce.pushValue( + subFloat32bits(uint32(xHigh), uint32(yHigh)) | subFloat32bits(uint32(xHigh>>32), uint32(yHigh>>32))<<32, + ) + case shapeF64x2: + ce.pushValue(math.Float64bits(math.Float64frombits(xLow) - math.Float64frombits(yLow))) + ce.pushValue(math.Float64bits(math.Float64frombits(xHigh) - math.Float64frombits(yHigh))) + } + frame.pc++ + case operationKindV128Load: + offset := ce.popMemoryOffset(op) + switch op.B1 { + case v128LoadType128: + lo, ok := memoryInst.ReadUint64Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(lo) + hi, ok := memoryInst.ReadUint64Le(offset + 8) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(hi) + case v128LoadType8x8s: + data, ok := memoryInst.Read(offset, 8) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue( + uint64(uint16(int8(data[3])))<<48 | uint64(uint16(int8(data[2])))<<32 | uint64(uint16(int8(data[1])))<<16 | uint64(uint16(int8(data[0]))), + ) + ce.pushValue( + uint64(uint16(int8(data[7])))<<48 | uint64(uint16(int8(data[6])))<<32 | uint64(uint16(int8(data[5])))<<16 | uint64(uint16(int8(data[4]))), + ) + case v128LoadType8x8u: + data, ok := memoryInst.Read(offset, 8) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue( + uint64(data[3])<<48 | uint64(data[2])<<32 | uint64(data[1])<<16 | uint64(data[0]), + ) + ce.pushValue( + uint64(data[7])<<48 | uint64(data[6])<<32 | uint64(data[5])<<16 | uint64(data[4]), + ) + case v128LoadType16x4s: + data, ok := memoryInst.Read(offset, 8) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue( + uint64(int16(binary.LittleEndian.Uint16(data[2:])))<<32 | + uint64(uint32(int16(binary.LittleEndian.Uint16(data)))), + ) + ce.pushValue( + uint64(uint32(int16(binary.LittleEndian.Uint16(data[6:]))))<<32 | + uint64(uint32(int16(binary.LittleEndian.Uint16(data[4:])))), + ) + case v128LoadType16x4u: + data, ok := memoryInst.Read(offset, 8) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue( + uint64(binary.LittleEndian.Uint16(data[2:]))<<32 | uint64(binary.LittleEndian.Uint16(data)), + ) + ce.pushValue( + uint64(binary.LittleEndian.Uint16(data[6:]))<<32 | uint64(binary.LittleEndian.Uint16(data[4:])), + ) + case v128LoadType32x2s: + data, ok := memoryInst.Read(offset, 8) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(uint64(int32(binary.LittleEndian.Uint32(data)))) + ce.pushValue(uint64(int32(binary.LittleEndian.Uint32(data[4:])))) + case v128LoadType32x2u: + data, ok := memoryInst.Read(offset, 8) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(uint64(binary.LittleEndian.Uint32(data))) + ce.pushValue(uint64(binary.LittleEndian.Uint32(data[4:]))) + case v128LoadType8Splat: + v, ok := memoryInst.ReadByte(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + v8 := uint64(v)<<56 | uint64(v)<<48 | uint64(v)<<40 | uint64(v)<<32 | + uint64(v)<<24 | uint64(v)<<16 | uint64(v)<<8 | uint64(v) + ce.pushValue(v8) + ce.pushValue(v8) + case v128LoadType16Splat: + v, ok := memoryInst.ReadUint16Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + v4 := uint64(v)<<48 | uint64(v)<<32 | uint64(v)<<16 | uint64(v) + ce.pushValue(v4) + ce.pushValue(v4) + case v128LoadType32Splat: + v, ok := memoryInst.ReadUint32Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + vv := uint64(v)<<32 | uint64(v) + ce.pushValue(vv) + ce.pushValue(vv) + case v128LoadType64Splat: + lo, ok := memoryInst.ReadUint64Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(lo) + ce.pushValue(lo) + case v128LoadType32zero: + lo, ok := memoryInst.ReadUint32Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(uint64(lo)) + ce.pushValue(0) + case v128LoadType64zero: + lo, ok := memoryInst.ReadUint64Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(lo) + ce.pushValue(0) + } + frame.pc++ + case operationKindV128LoadLane: + hi, lo := ce.popValue(), ce.popValue() + offset := ce.popMemoryOffset(op) + switch op.B1 { + case 8: + b, ok := memoryInst.ReadByte(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if op.B2 < 8 { + s := op.B2 << 3 + lo = (lo & ^(0xff << s)) | uint64(b)<<s + } else { + s := (op.B2 - 8) << 3 + hi = (hi & ^(0xff << s)) | uint64(b)<<s + } + case 16: + b, ok := memoryInst.ReadUint16Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if op.B2 < 4 { + s := op.B2 << 4 + lo = (lo & ^(0xff_ff << s)) | uint64(b)<<s + } else { + s := (op.B2 - 4) << 4 + hi = (hi & ^(0xff_ff << s)) | uint64(b)<<s + } + case 32: + b, ok := memoryInst.ReadUint32Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if op.B2 < 2 { + s := op.B2 << 5 + lo = (lo & ^(0xff_ff_ff_ff << s)) | uint64(b)<<s + } else { + s := (op.B2 - 2) << 5 + hi = (hi & ^(0xff_ff_ff_ff << s)) | uint64(b)<<s + } + case 64: + b, ok := memoryInst.ReadUint64Le(offset) + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if op.B2 == 0 { + lo = b + } else { + hi = b + } + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Store: + hi, lo := ce.popValue(), ce.popValue() + offset := ce.popMemoryOffset(op) + // Write the upper bytes first to trigger an early error if the memory access is out of bounds. + // Otherwise, the lower bytes might be written to memory, but the upper bytes might not. + if uint64(offset)+8 > math.MaxUint32 { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if ok := memoryInst.WriteUint64Le(offset+8, hi); !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if ok := memoryInst.WriteUint64Le(offset, lo); !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + frame.pc++ + case operationKindV128StoreLane: + hi, lo := ce.popValue(), ce.popValue() + offset := ce.popMemoryOffset(op) + var ok bool + switch op.B1 { + case 8: + if op.B2 < 8 { + ok = memoryInst.WriteByte(offset, byte(lo>>(op.B2*8))) + } else { + ok = memoryInst.WriteByte(offset, byte(hi>>((op.B2-8)*8))) + } + case 16: + if op.B2 < 4 { + ok = memoryInst.WriteUint16Le(offset, uint16(lo>>(op.B2*16))) + } else { + ok = memoryInst.WriteUint16Le(offset, uint16(hi>>((op.B2-4)*16))) + } + case 32: + if op.B2 < 2 { + ok = memoryInst.WriteUint32Le(offset, uint32(lo>>(op.B2*32))) + } else { + ok = memoryInst.WriteUint32Le(offset, uint32(hi>>((op.B2-2)*32))) + } + case 64: + if op.B2 == 0 { + ok = memoryInst.WriteUint64Le(offset, lo) + } else { + ok = memoryInst.WriteUint64Le(offset, hi) + } + } + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + frame.pc++ + case operationKindV128ReplaceLane: + v := ce.popValue() + hi, lo := ce.popValue(), ce.popValue() + switch op.B1 { + case shapeI8x16: + if op.B2 < 8 { + s := op.B2 << 3 + lo = (lo & ^(0xff << s)) | uint64(byte(v))<<s + } else { + s := (op.B2 - 8) << 3 + hi = (hi & ^(0xff << s)) | uint64(byte(v))<<s + } + case shapeI16x8: + if op.B2 < 4 { + s := op.B2 << 4 + lo = (lo & ^(0xff_ff << s)) | uint64(uint16(v))<<s + } else { + s := (op.B2 - 4) << 4 + hi = (hi & ^(0xff_ff << s)) | uint64(uint16(v))<<s + } + case shapeI32x4, shapeF32x4: + if op.B2 < 2 { + s := op.B2 << 5 + lo = (lo & ^(0xff_ff_ff_ff << s)) | uint64(uint32(v))<<s + } else { + s := (op.B2 - 2) << 5 + hi = (hi & ^(0xff_ff_ff_ff << s)) | uint64(uint32(v))<<s + } + case shapeI64x2, shapeF64x2: + if op.B2 == 0 { + lo = v + } else { + hi = v + } + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128ExtractLane: + hi, lo := ce.popValue(), ce.popValue() + var v uint64 + switch op.B1 { + case shapeI8x16: + var u8 byte + if op.B2 < 8 { + u8 = byte(lo >> (op.B2 * 8)) + } else { + u8 = byte(hi >> ((op.B2 - 8) * 8)) + } + if op.B3 { + // sign-extend. + v = uint64(uint32(int8(u8))) + } else { + v = uint64(u8) + } + case shapeI16x8: + var u16 uint16 + if op.B2 < 4 { + u16 = uint16(lo >> (op.B2 * 16)) + } else { + u16 = uint16(hi >> ((op.B2 - 4) * 16)) + } + if op.B3 { + // sign-extend. + v = uint64(uint32(int16(u16))) + } else { + v = uint64(u16) + } + case shapeI32x4, shapeF32x4: + if op.B2 < 2 { + v = uint64(uint32(lo >> (op.B2 * 32))) + } else { + v = uint64(uint32(hi >> ((op.B2 - 2) * 32))) + } + case shapeI64x2, shapeF64x2: + if op.B2 == 0 { + v = lo + } else { + v = hi + } + } + ce.pushValue(v) + frame.pc++ + case operationKindV128Splat: + v := ce.popValue() + var hi, lo uint64 + switch op.B1 { + case shapeI8x16: + v8 := uint64(byte(v))<<56 | uint64(byte(v))<<48 | uint64(byte(v))<<40 | uint64(byte(v))<<32 | + uint64(byte(v))<<24 | uint64(byte(v))<<16 | uint64(byte(v))<<8 | uint64(byte(v)) + hi, lo = v8, v8 + case shapeI16x8: + v4 := uint64(uint16(v))<<48 | uint64(uint16(v))<<32 | uint64(uint16(v))<<16 | uint64(uint16(v)) + hi, lo = v4, v4 + case shapeI32x4, shapeF32x4: + v2 := uint64(uint32(v))<<32 | uint64(uint32(v)) + lo, hi = v2, v2 + case shapeI64x2, shapeF64x2: + lo, hi = v, v + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Swizzle: + idxHi, idxLo := ce.popValue(), ce.popValue() + baseHi, baseLo := ce.popValue(), ce.popValue() + var newVal [16]byte + for i := 0; i < 16; i++ { + var id byte + if i < 8 { + id = byte(idxLo >> (i * 8)) + } else { + id = byte(idxHi >> ((i - 8) * 8)) + } + if id < 8 { + newVal[i] = byte(baseLo >> (id * 8)) + } else if id < 16 { + newVal[i] = byte(baseHi >> ((id - 8) * 8)) + } + } + ce.pushValue(binary.LittleEndian.Uint64(newVal[:8])) + ce.pushValue(binary.LittleEndian.Uint64(newVal[8:])) + frame.pc++ + case operationKindV128Shuffle: + xHi, xLo, yHi, yLo := ce.popValue(), ce.popValue(), ce.popValue(), ce.popValue() + var newVal [16]byte + for i, l := range op.Us { + if l < 8 { + newVal[i] = byte(yLo >> (l * 8)) + } else if l < 16 { + newVal[i] = byte(yHi >> ((l - 8) * 8)) + } else if l < 24 { + newVal[i] = byte(xLo >> ((l - 16) * 8)) + } else if l < 32 { + newVal[i] = byte(xHi >> ((l - 24) * 8)) + } + } + ce.pushValue(binary.LittleEndian.Uint64(newVal[:8])) + ce.pushValue(binary.LittleEndian.Uint64(newVal[8:])) + frame.pc++ + case operationKindV128AnyTrue: + hi, lo := ce.popValue(), ce.popValue() + if hi != 0 || lo != 0 { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindV128AllTrue: + hi, lo := ce.popValue(), ce.popValue() + var ret bool + switch op.B1 { + case shapeI8x16: + ret = (uint8(lo) != 0) && (uint8(lo>>8) != 0) && (uint8(lo>>16) != 0) && (uint8(lo>>24) != 0) && + (uint8(lo>>32) != 0) && (uint8(lo>>40) != 0) && (uint8(lo>>48) != 0) && (uint8(lo>>56) != 0) && + (uint8(hi) != 0) && (uint8(hi>>8) != 0) && (uint8(hi>>16) != 0) && (uint8(hi>>24) != 0) && + (uint8(hi>>32) != 0) && (uint8(hi>>40) != 0) && (uint8(hi>>48) != 0) && (uint8(hi>>56) != 0) + case shapeI16x8: + ret = (uint16(lo) != 0) && (uint16(lo>>16) != 0) && (uint16(lo>>32) != 0) && (uint16(lo>>48) != 0) && + (uint16(hi) != 0) && (uint16(hi>>16) != 0) && (uint16(hi>>32) != 0) && (uint16(hi>>48) != 0) + case shapeI32x4: + ret = (uint32(lo) != 0) && (uint32(lo>>32) != 0) && + (uint32(hi) != 0) && (uint32(hi>>32) != 0) + case shapeI64x2: + ret = (lo != 0) && + (hi != 0) + } + if ret { + ce.pushValue(1) + } else { + ce.pushValue(0) + } + frame.pc++ + case operationKindV128BitMask: + // https://github.com/WebAssembly/spec/blob/wg-2.0.draft1/proposals/simd/SIMD.md#bitmask-extraction + hi, lo := ce.popValue(), ce.popValue() + var res uint64 + switch op.B1 { + case shapeI8x16: + for i := 0; i < 8; i++ { + if int8(lo>>(i*8)) < 0 { + res |= 1 << i + } + } + for i := 0; i < 8; i++ { + if int8(hi>>(i*8)) < 0 { + res |= 1 << (i + 8) + } + } + case shapeI16x8: + for i := 0; i < 4; i++ { + if int16(lo>>(i*16)) < 0 { + res |= 1 << i + } + } + for i := 0; i < 4; i++ { + if int16(hi>>(i*16)) < 0 { + res |= 1 << (i + 4) + } + } + case shapeI32x4: + for i := 0; i < 2; i++ { + if int32(lo>>(i*32)) < 0 { + res |= 1 << i + } + } + for i := 0; i < 2; i++ { + if int32(hi>>(i*32)) < 0 { + res |= 1 << (i + 2) + } + } + case shapeI64x2: + if int64(lo) < 0 { + res |= 0b01 + } + if int(hi) < 0 { + res |= 0b10 + } + } + ce.pushValue(res) + frame.pc++ + case operationKindV128And: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + ce.pushValue(x1Lo & x2Lo) + ce.pushValue(x1Hi & x2Hi) + frame.pc++ + case operationKindV128Not: + hi, lo := ce.popValue(), ce.popValue() + ce.pushValue(^lo) + ce.pushValue(^hi) + frame.pc++ + case operationKindV128Or: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + ce.pushValue(x1Lo | x2Lo) + ce.pushValue(x1Hi | x2Hi) + frame.pc++ + case operationKindV128Xor: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + ce.pushValue(x1Lo ^ x2Lo) + ce.pushValue(x1Hi ^ x2Hi) + frame.pc++ + case operationKindV128Bitselect: + // https://github.com/WebAssembly/spec/blob/wg-2.0.draft1/proposals/simd/SIMD.md#bitwise-select + cHi, cLo := ce.popValue(), ce.popValue() + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + // v128.or(v128.and(v1, c), v128.and(v2, v128.not(c))) + ce.pushValue((x1Lo & cLo) | (x2Lo & (^cLo))) + ce.pushValue((x1Hi & cHi) | (x2Hi & (^cHi))) + frame.pc++ + case operationKindV128AndNot: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + ce.pushValue(x1Lo & (^x2Lo)) + ce.pushValue(x1Hi & (^x2Hi)) + frame.pc++ + case operationKindV128Shl: + s := ce.popValue() + hi, lo := ce.popValue(), ce.popValue() + switch op.B1 { + case shapeI8x16: + s = s % 8 + lo = uint64(uint8(lo<<s)) | + uint64(uint8((lo>>8)<<s))<<8 | + uint64(uint8((lo>>16)<<s))<<16 | + uint64(uint8((lo>>24)<<s))<<24 | + uint64(uint8((lo>>32)<<s))<<32 | + uint64(uint8((lo>>40)<<s))<<40 | + uint64(uint8((lo>>48)<<s))<<48 | + uint64(uint8((lo>>56)<<s))<<56 + hi = uint64(uint8(hi<<s)) | + uint64(uint8((hi>>8)<<s))<<8 | + uint64(uint8((hi>>16)<<s))<<16 | + uint64(uint8((hi>>24)<<s))<<24 | + uint64(uint8((hi>>32)<<s))<<32 | + uint64(uint8((hi>>40)<<s))<<40 | + uint64(uint8((hi>>48)<<s))<<48 | + uint64(uint8((hi>>56)<<s))<<56 + case shapeI16x8: + s = s % 16 + lo = uint64(uint16(lo<<s)) | + uint64(uint16((lo>>16)<<s))<<16 | + uint64(uint16((lo>>32)<<s))<<32 | + uint64(uint16((lo>>48)<<s))<<48 + hi = uint64(uint16(hi<<s)) | + uint64(uint16((hi>>16)<<s))<<16 | + uint64(uint16((hi>>32)<<s))<<32 | + uint64(uint16((hi>>48)<<s))<<48 + case shapeI32x4: + s = s % 32 + lo = uint64(uint32(lo<<s)) | uint64(uint32((lo>>32)<<s))<<32 + hi = uint64(uint32(hi<<s)) | uint64(uint32((hi>>32)<<s))<<32 + case shapeI64x2: + s = s % 64 + lo = lo << s + hi = hi << s + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Shr: + s := ce.popValue() + hi, lo := ce.popValue(), ce.popValue() + switch op.B1 { + case shapeI8x16: + s = s % 8 + if op.B3 { // signed + lo = uint64(uint8(int8(lo)>>s)) | + uint64(uint8(int8(lo>>8)>>s))<<8 | + uint64(uint8(int8(lo>>16)>>s))<<16 | + uint64(uint8(int8(lo>>24)>>s))<<24 | + uint64(uint8(int8(lo>>32)>>s))<<32 | + uint64(uint8(int8(lo>>40)>>s))<<40 | + uint64(uint8(int8(lo>>48)>>s))<<48 | + uint64(uint8(int8(lo>>56)>>s))<<56 + hi = uint64(uint8(int8(hi)>>s)) | + uint64(uint8(int8(hi>>8)>>s))<<8 | + uint64(uint8(int8(hi>>16)>>s))<<16 | + uint64(uint8(int8(hi>>24)>>s))<<24 | + uint64(uint8(int8(hi>>32)>>s))<<32 | + uint64(uint8(int8(hi>>40)>>s))<<40 | + uint64(uint8(int8(hi>>48)>>s))<<48 | + uint64(uint8(int8(hi>>56)>>s))<<56 + } else { + lo = uint64(uint8(lo)>>s) | + uint64(uint8(lo>>8)>>s)<<8 | + uint64(uint8(lo>>16)>>s)<<16 | + uint64(uint8(lo>>24)>>s)<<24 | + uint64(uint8(lo>>32)>>s)<<32 | + uint64(uint8(lo>>40)>>s)<<40 | + uint64(uint8(lo>>48)>>s)<<48 | + uint64(uint8(lo>>56)>>s)<<56 + hi = uint64(uint8(hi)>>s) | + uint64(uint8(hi>>8)>>s)<<8 | + uint64(uint8(hi>>16)>>s)<<16 | + uint64(uint8(hi>>24)>>s)<<24 | + uint64(uint8(hi>>32)>>s)<<32 | + uint64(uint8(hi>>40)>>s)<<40 | + uint64(uint8(hi>>48)>>s)<<48 | + uint64(uint8(hi>>56)>>s)<<56 + } + case shapeI16x8: + s = s % 16 + if op.B3 { // signed + lo = uint64(uint16(int16(lo)>>s)) | + uint64(uint16(int16(lo>>16)>>s))<<16 | + uint64(uint16(int16(lo>>32)>>s))<<32 | + uint64(uint16(int16(lo>>48)>>s))<<48 + hi = uint64(uint16(int16(hi)>>s)) | + uint64(uint16(int16(hi>>16)>>s))<<16 | + uint64(uint16(int16(hi>>32)>>s))<<32 | + uint64(uint16(int16(hi>>48)>>s))<<48 + } else { + lo = uint64(uint16(lo)>>s) | + uint64(uint16(lo>>16)>>s)<<16 | + uint64(uint16(lo>>32)>>s)<<32 | + uint64(uint16(lo>>48)>>s)<<48 + hi = uint64(uint16(hi)>>s) | + uint64(uint16(hi>>16)>>s)<<16 | + uint64(uint16(hi>>32)>>s)<<32 | + uint64(uint16(hi>>48)>>s)<<48 + } + case shapeI32x4: + s = s % 32 + if op.B3 { + lo = uint64(uint32(int32(lo)>>s)) | uint64(uint32(int32(lo>>32)>>s))<<32 + hi = uint64(uint32(int32(hi)>>s)) | uint64(uint32(int32(hi>>32)>>s))<<32 + } else { + lo = uint64(uint32(lo)>>s) | uint64(uint32(lo>>32)>>s)<<32 + hi = uint64(uint32(hi)>>s) | uint64(uint32(hi>>32)>>s)<<32 + } + case shapeI64x2: + s = s % 64 + if op.B3 { // signed + lo = uint64(int64(lo) >> s) + hi = uint64(int64(hi) >> s) + } else { + lo = lo >> s + hi = hi >> s + } + + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Cmp: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + var result []bool + switch op.B1 { + case v128CmpTypeI8x16Eq: + result = []bool{ + byte(x1Lo>>0) == byte(x2Lo>>0), byte(x1Lo>>8) == byte(x2Lo>>8), + byte(x1Lo>>16) == byte(x2Lo>>16), byte(x1Lo>>24) == byte(x2Lo>>24), + byte(x1Lo>>32) == byte(x2Lo>>32), byte(x1Lo>>40) == byte(x2Lo>>40), + byte(x1Lo>>48) == byte(x2Lo>>48), byte(x1Lo>>56) == byte(x2Lo>>56), + byte(x1Hi>>0) == byte(x2Hi>>0), byte(x1Hi>>8) == byte(x2Hi>>8), + byte(x1Hi>>16) == byte(x2Hi>>16), byte(x1Hi>>24) == byte(x2Hi>>24), + byte(x1Hi>>32) == byte(x2Hi>>32), byte(x1Hi>>40) == byte(x2Hi>>40), + byte(x1Hi>>48) == byte(x2Hi>>48), byte(x1Hi>>56) == byte(x2Hi>>56), + } + case v128CmpTypeI8x16Ne: + result = []bool{ + byte(x1Lo>>0) != byte(x2Lo>>0), byte(x1Lo>>8) != byte(x2Lo>>8), + byte(x1Lo>>16) != byte(x2Lo>>16), byte(x1Lo>>24) != byte(x2Lo>>24), + byte(x1Lo>>32) != byte(x2Lo>>32), byte(x1Lo>>40) != byte(x2Lo>>40), + byte(x1Lo>>48) != byte(x2Lo>>48), byte(x1Lo>>56) != byte(x2Lo>>56), + byte(x1Hi>>0) != byte(x2Hi>>0), byte(x1Hi>>8) != byte(x2Hi>>8), + byte(x1Hi>>16) != byte(x2Hi>>16), byte(x1Hi>>24) != byte(x2Hi>>24), + byte(x1Hi>>32) != byte(x2Hi>>32), byte(x1Hi>>40) != byte(x2Hi>>40), + byte(x1Hi>>48) != byte(x2Hi>>48), byte(x1Hi>>56) != byte(x2Hi>>56), + } + case v128CmpTypeI8x16LtS: + result = []bool{ + int8(x1Lo>>0) < int8(x2Lo>>0), int8(x1Lo>>8) < int8(x2Lo>>8), + int8(x1Lo>>16) < int8(x2Lo>>16), int8(x1Lo>>24) < int8(x2Lo>>24), + int8(x1Lo>>32) < int8(x2Lo>>32), int8(x1Lo>>40) < int8(x2Lo>>40), + int8(x1Lo>>48) < int8(x2Lo>>48), int8(x1Lo>>56) < int8(x2Lo>>56), + int8(x1Hi>>0) < int8(x2Hi>>0), int8(x1Hi>>8) < int8(x2Hi>>8), + int8(x1Hi>>16) < int8(x2Hi>>16), int8(x1Hi>>24) < int8(x2Hi>>24), + int8(x1Hi>>32) < int8(x2Hi>>32), int8(x1Hi>>40) < int8(x2Hi>>40), + int8(x1Hi>>48) < int8(x2Hi>>48), int8(x1Hi>>56) < int8(x2Hi>>56), + } + case v128CmpTypeI8x16LtU: + result = []bool{ + byte(x1Lo>>0) < byte(x2Lo>>0), byte(x1Lo>>8) < byte(x2Lo>>8), + byte(x1Lo>>16) < byte(x2Lo>>16), byte(x1Lo>>24) < byte(x2Lo>>24), + byte(x1Lo>>32) < byte(x2Lo>>32), byte(x1Lo>>40) < byte(x2Lo>>40), + byte(x1Lo>>48) < byte(x2Lo>>48), byte(x1Lo>>56) < byte(x2Lo>>56), + byte(x1Hi>>0) < byte(x2Hi>>0), byte(x1Hi>>8) < byte(x2Hi>>8), + byte(x1Hi>>16) < byte(x2Hi>>16), byte(x1Hi>>24) < byte(x2Hi>>24), + byte(x1Hi>>32) < byte(x2Hi>>32), byte(x1Hi>>40) < byte(x2Hi>>40), + byte(x1Hi>>48) < byte(x2Hi>>48), byte(x1Hi>>56) < byte(x2Hi>>56), + } + case v128CmpTypeI8x16GtS: + result = []bool{ + int8(x1Lo>>0) > int8(x2Lo>>0), int8(x1Lo>>8) > int8(x2Lo>>8), + int8(x1Lo>>16) > int8(x2Lo>>16), int8(x1Lo>>24) > int8(x2Lo>>24), + int8(x1Lo>>32) > int8(x2Lo>>32), int8(x1Lo>>40) > int8(x2Lo>>40), + int8(x1Lo>>48) > int8(x2Lo>>48), int8(x1Lo>>56) > int8(x2Lo>>56), + int8(x1Hi>>0) > int8(x2Hi>>0), int8(x1Hi>>8) > int8(x2Hi>>8), + int8(x1Hi>>16) > int8(x2Hi>>16), int8(x1Hi>>24) > int8(x2Hi>>24), + int8(x1Hi>>32) > int8(x2Hi>>32), int8(x1Hi>>40) > int8(x2Hi>>40), + int8(x1Hi>>48) > int8(x2Hi>>48), int8(x1Hi>>56) > int8(x2Hi>>56), + } + case v128CmpTypeI8x16GtU: + result = []bool{ + byte(x1Lo>>0) > byte(x2Lo>>0), byte(x1Lo>>8) > byte(x2Lo>>8), + byte(x1Lo>>16) > byte(x2Lo>>16), byte(x1Lo>>24) > byte(x2Lo>>24), + byte(x1Lo>>32) > byte(x2Lo>>32), byte(x1Lo>>40) > byte(x2Lo>>40), + byte(x1Lo>>48) > byte(x2Lo>>48), byte(x1Lo>>56) > byte(x2Lo>>56), + byte(x1Hi>>0) > byte(x2Hi>>0), byte(x1Hi>>8) > byte(x2Hi>>8), + byte(x1Hi>>16) > byte(x2Hi>>16), byte(x1Hi>>24) > byte(x2Hi>>24), + byte(x1Hi>>32) > byte(x2Hi>>32), byte(x1Hi>>40) > byte(x2Hi>>40), + byte(x1Hi>>48) > byte(x2Hi>>48), byte(x1Hi>>56) > byte(x2Hi>>56), + } + case v128CmpTypeI8x16LeS: + result = []bool{ + int8(x1Lo>>0) <= int8(x2Lo>>0), int8(x1Lo>>8) <= int8(x2Lo>>8), + int8(x1Lo>>16) <= int8(x2Lo>>16), int8(x1Lo>>24) <= int8(x2Lo>>24), + int8(x1Lo>>32) <= int8(x2Lo>>32), int8(x1Lo>>40) <= int8(x2Lo>>40), + int8(x1Lo>>48) <= int8(x2Lo>>48), int8(x1Lo>>56) <= int8(x2Lo>>56), + int8(x1Hi>>0) <= int8(x2Hi>>0), int8(x1Hi>>8) <= int8(x2Hi>>8), + int8(x1Hi>>16) <= int8(x2Hi>>16), int8(x1Hi>>24) <= int8(x2Hi>>24), + int8(x1Hi>>32) <= int8(x2Hi>>32), int8(x1Hi>>40) <= int8(x2Hi>>40), + int8(x1Hi>>48) <= int8(x2Hi>>48), int8(x1Hi>>56) <= int8(x2Hi>>56), + } + case v128CmpTypeI8x16LeU: + result = []bool{ + byte(x1Lo>>0) <= byte(x2Lo>>0), byte(x1Lo>>8) <= byte(x2Lo>>8), + byte(x1Lo>>16) <= byte(x2Lo>>16), byte(x1Lo>>24) <= byte(x2Lo>>24), + byte(x1Lo>>32) <= byte(x2Lo>>32), byte(x1Lo>>40) <= byte(x2Lo>>40), + byte(x1Lo>>48) <= byte(x2Lo>>48), byte(x1Lo>>56) <= byte(x2Lo>>56), + byte(x1Hi>>0) <= byte(x2Hi>>0), byte(x1Hi>>8) <= byte(x2Hi>>8), + byte(x1Hi>>16) <= byte(x2Hi>>16), byte(x1Hi>>24) <= byte(x2Hi>>24), + byte(x1Hi>>32) <= byte(x2Hi>>32), byte(x1Hi>>40) <= byte(x2Hi>>40), + byte(x1Hi>>48) <= byte(x2Hi>>48), byte(x1Hi>>56) <= byte(x2Hi>>56), + } + case v128CmpTypeI8x16GeS: + result = []bool{ + int8(x1Lo>>0) >= int8(x2Lo>>0), int8(x1Lo>>8) >= int8(x2Lo>>8), + int8(x1Lo>>16) >= int8(x2Lo>>16), int8(x1Lo>>24) >= int8(x2Lo>>24), + int8(x1Lo>>32) >= int8(x2Lo>>32), int8(x1Lo>>40) >= int8(x2Lo>>40), + int8(x1Lo>>48) >= int8(x2Lo>>48), int8(x1Lo>>56) >= int8(x2Lo>>56), + int8(x1Hi>>0) >= int8(x2Hi>>0), int8(x1Hi>>8) >= int8(x2Hi>>8), + int8(x1Hi>>16) >= int8(x2Hi>>16), int8(x1Hi>>24) >= int8(x2Hi>>24), + int8(x1Hi>>32) >= int8(x2Hi>>32), int8(x1Hi>>40) >= int8(x2Hi>>40), + int8(x1Hi>>48) >= int8(x2Hi>>48), int8(x1Hi>>56) >= int8(x2Hi>>56), + } + case v128CmpTypeI8x16GeU: + result = []bool{ + byte(x1Lo>>0) >= byte(x2Lo>>0), byte(x1Lo>>8) >= byte(x2Lo>>8), + byte(x1Lo>>16) >= byte(x2Lo>>16), byte(x1Lo>>24) >= byte(x2Lo>>24), + byte(x1Lo>>32) >= byte(x2Lo>>32), byte(x1Lo>>40) >= byte(x2Lo>>40), + byte(x1Lo>>48) >= byte(x2Lo>>48), byte(x1Lo>>56) >= byte(x2Lo>>56), + byte(x1Hi>>0) >= byte(x2Hi>>0), byte(x1Hi>>8) >= byte(x2Hi>>8), + byte(x1Hi>>16) >= byte(x2Hi>>16), byte(x1Hi>>24) >= byte(x2Hi>>24), + byte(x1Hi>>32) >= byte(x2Hi>>32), byte(x1Hi>>40) >= byte(x2Hi>>40), + byte(x1Hi>>48) >= byte(x2Hi>>48), byte(x1Hi>>56) >= byte(x2Hi>>56), + } + case v128CmpTypeI16x8Eq: + result = []bool{ + uint16(x1Lo>>0) == uint16(x2Lo>>0), uint16(x1Lo>>16) == uint16(x2Lo>>16), + uint16(x1Lo>>32) == uint16(x2Lo>>32), uint16(x1Lo>>48) == uint16(x2Lo>>48), + uint16(x1Hi>>0) == uint16(x2Hi>>0), uint16(x1Hi>>16) == uint16(x2Hi>>16), + uint16(x1Hi>>32) == uint16(x2Hi>>32), uint16(x1Hi>>48) == uint16(x2Hi>>48), + } + case v128CmpTypeI16x8Ne: + result = []bool{ + uint16(x1Lo>>0) != uint16(x2Lo>>0), uint16(x1Lo>>16) != uint16(x2Lo>>16), + uint16(x1Lo>>32) != uint16(x2Lo>>32), uint16(x1Lo>>48) != uint16(x2Lo>>48), + uint16(x1Hi>>0) != uint16(x2Hi>>0), uint16(x1Hi>>16) != uint16(x2Hi>>16), + uint16(x1Hi>>32) != uint16(x2Hi>>32), uint16(x1Hi>>48) != uint16(x2Hi>>48), + } + case v128CmpTypeI16x8LtS: + result = []bool{ + int16(x1Lo>>0) < int16(x2Lo>>0), int16(x1Lo>>16) < int16(x2Lo>>16), + int16(x1Lo>>32) < int16(x2Lo>>32), int16(x1Lo>>48) < int16(x2Lo>>48), + int16(x1Hi>>0) < int16(x2Hi>>0), int16(x1Hi>>16) < int16(x2Hi>>16), + int16(x1Hi>>32) < int16(x2Hi>>32), int16(x1Hi>>48) < int16(x2Hi>>48), + } + case v128CmpTypeI16x8LtU: + result = []bool{ + uint16(x1Lo>>0) < uint16(x2Lo>>0), uint16(x1Lo>>16) < uint16(x2Lo>>16), + uint16(x1Lo>>32) < uint16(x2Lo>>32), uint16(x1Lo>>48) < uint16(x2Lo>>48), + uint16(x1Hi>>0) < uint16(x2Hi>>0), uint16(x1Hi>>16) < uint16(x2Hi>>16), + uint16(x1Hi>>32) < uint16(x2Hi>>32), uint16(x1Hi>>48) < uint16(x2Hi>>48), + } + case v128CmpTypeI16x8GtS: + result = []bool{ + int16(x1Lo>>0) > int16(x2Lo>>0), int16(x1Lo>>16) > int16(x2Lo>>16), + int16(x1Lo>>32) > int16(x2Lo>>32), int16(x1Lo>>48) > int16(x2Lo>>48), + int16(x1Hi>>0) > int16(x2Hi>>0), int16(x1Hi>>16) > int16(x2Hi>>16), + int16(x1Hi>>32) > int16(x2Hi>>32), int16(x1Hi>>48) > int16(x2Hi>>48), + } + case v128CmpTypeI16x8GtU: + result = []bool{ + uint16(x1Lo>>0) > uint16(x2Lo>>0), uint16(x1Lo>>16) > uint16(x2Lo>>16), + uint16(x1Lo>>32) > uint16(x2Lo>>32), uint16(x1Lo>>48) > uint16(x2Lo>>48), + uint16(x1Hi>>0) > uint16(x2Hi>>0), uint16(x1Hi>>16) > uint16(x2Hi>>16), + uint16(x1Hi>>32) > uint16(x2Hi>>32), uint16(x1Hi>>48) > uint16(x2Hi>>48), + } + case v128CmpTypeI16x8LeS: + result = []bool{ + int16(x1Lo>>0) <= int16(x2Lo>>0), int16(x1Lo>>16) <= int16(x2Lo>>16), + int16(x1Lo>>32) <= int16(x2Lo>>32), int16(x1Lo>>48) <= int16(x2Lo>>48), + int16(x1Hi>>0) <= int16(x2Hi>>0), int16(x1Hi>>16) <= int16(x2Hi>>16), + int16(x1Hi>>32) <= int16(x2Hi>>32), int16(x1Hi>>48) <= int16(x2Hi>>48), + } + case v128CmpTypeI16x8LeU: + result = []bool{ + uint16(x1Lo>>0) <= uint16(x2Lo>>0), uint16(x1Lo>>16) <= uint16(x2Lo>>16), + uint16(x1Lo>>32) <= uint16(x2Lo>>32), uint16(x1Lo>>48) <= uint16(x2Lo>>48), + uint16(x1Hi>>0) <= uint16(x2Hi>>0), uint16(x1Hi>>16) <= uint16(x2Hi>>16), + uint16(x1Hi>>32) <= uint16(x2Hi>>32), uint16(x1Hi>>48) <= uint16(x2Hi>>48), + } + case v128CmpTypeI16x8GeS: + result = []bool{ + int16(x1Lo>>0) >= int16(x2Lo>>0), int16(x1Lo>>16) >= int16(x2Lo>>16), + int16(x1Lo>>32) >= int16(x2Lo>>32), int16(x1Lo>>48) >= int16(x2Lo>>48), + int16(x1Hi>>0) >= int16(x2Hi>>0), int16(x1Hi>>16) >= int16(x2Hi>>16), + int16(x1Hi>>32) >= int16(x2Hi>>32), int16(x1Hi>>48) >= int16(x2Hi>>48), + } + case v128CmpTypeI16x8GeU: + result = []bool{ + uint16(x1Lo>>0) >= uint16(x2Lo>>0), uint16(x1Lo>>16) >= uint16(x2Lo>>16), + uint16(x1Lo>>32) >= uint16(x2Lo>>32), uint16(x1Lo>>48) >= uint16(x2Lo>>48), + uint16(x1Hi>>0) >= uint16(x2Hi>>0), uint16(x1Hi>>16) >= uint16(x2Hi>>16), + uint16(x1Hi>>32) >= uint16(x2Hi>>32), uint16(x1Hi>>48) >= uint16(x2Hi>>48), + } + case v128CmpTypeI32x4Eq: + result = []bool{ + uint32(x1Lo>>0) == uint32(x2Lo>>0), uint32(x1Lo>>32) == uint32(x2Lo>>32), + uint32(x1Hi>>0) == uint32(x2Hi>>0), uint32(x1Hi>>32) == uint32(x2Hi>>32), + } + case v128CmpTypeI32x4Ne: + result = []bool{ + uint32(x1Lo>>0) != uint32(x2Lo>>0), uint32(x1Lo>>32) != uint32(x2Lo>>32), + uint32(x1Hi>>0) != uint32(x2Hi>>0), uint32(x1Hi>>32) != uint32(x2Hi>>32), + } + case v128CmpTypeI32x4LtS: + result = []bool{ + int32(x1Lo>>0) < int32(x2Lo>>0), int32(x1Lo>>32) < int32(x2Lo>>32), + int32(x1Hi>>0) < int32(x2Hi>>0), int32(x1Hi>>32) < int32(x2Hi>>32), + } + case v128CmpTypeI32x4LtU: + result = []bool{ + uint32(x1Lo>>0) < uint32(x2Lo>>0), uint32(x1Lo>>32) < uint32(x2Lo>>32), + uint32(x1Hi>>0) < uint32(x2Hi>>0), uint32(x1Hi>>32) < uint32(x2Hi>>32), + } + case v128CmpTypeI32x4GtS: + result = []bool{ + int32(x1Lo>>0) > int32(x2Lo>>0), int32(x1Lo>>32) > int32(x2Lo>>32), + int32(x1Hi>>0) > int32(x2Hi>>0), int32(x1Hi>>32) > int32(x2Hi>>32), + } + case v128CmpTypeI32x4GtU: + result = []bool{ + uint32(x1Lo>>0) > uint32(x2Lo>>0), uint32(x1Lo>>32) > uint32(x2Lo>>32), + uint32(x1Hi>>0) > uint32(x2Hi>>0), uint32(x1Hi>>32) > uint32(x2Hi>>32), + } + case v128CmpTypeI32x4LeS: + result = []bool{ + int32(x1Lo>>0) <= int32(x2Lo>>0), int32(x1Lo>>32) <= int32(x2Lo>>32), + int32(x1Hi>>0) <= int32(x2Hi>>0), int32(x1Hi>>32) <= int32(x2Hi>>32), + } + case v128CmpTypeI32x4LeU: + result = []bool{ + uint32(x1Lo>>0) <= uint32(x2Lo>>0), uint32(x1Lo>>32) <= uint32(x2Lo>>32), + uint32(x1Hi>>0) <= uint32(x2Hi>>0), uint32(x1Hi>>32) <= uint32(x2Hi>>32), + } + case v128CmpTypeI32x4GeS: + result = []bool{ + int32(x1Lo>>0) >= int32(x2Lo>>0), int32(x1Lo>>32) >= int32(x2Lo>>32), + int32(x1Hi>>0) >= int32(x2Hi>>0), int32(x1Hi>>32) >= int32(x2Hi>>32), + } + case v128CmpTypeI32x4GeU: + result = []bool{ + uint32(x1Lo>>0) >= uint32(x2Lo>>0), uint32(x1Lo>>32) >= uint32(x2Lo>>32), + uint32(x1Hi>>0) >= uint32(x2Hi>>0), uint32(x1Hi>>32) >= uint32(x2Hi>>32), + } + case v128CmpTypeI64x2Eq: + result = []bool{x1Lo == x2Lo, x1Hi == x2Hi} + case v128CmpTypeI64x2Ne: + result = []bool{x1Lo != x2Lo, x1Hi != x2Hi} + case v128CmpTypeI64x2LtS: + result = []bool{int64(x1Lo) < int64(x2Lo), int64(x1Hi) < int64(x2Hi)} + case v128CmpTypeI64x2GtS: + result = []bool{int64(x1Lo) > int64(x2Lo), int64(x1Hi) > int64(x2Hi)} + case v128CmpTypeI64x2LeS: + result = []bool{int64(x1Lo) <= int64(x2Lo), int64(x1Hi) <= int64(x2Hi)} + case v128CmpTypeI64x2GeS: + result = []bool{int64(x1Lo) >= int64(x2Lo), int64(x1Hi) >= int64(x2Hi)} + case v128CmpTypeF32x4Eq: + result = []bool{ + math.Float32frombits(uint32(x1Lo>>0)) == math.Float32frombits(uint32(x2Lo>>0)), + math.Float32frombits(uint32(x1Lo>>32)) == math.Float32frombits(uint32(x2Lo>>32)), + math.Float32frombits(uint32(x1Hi>>0)) == math.Float32frombits(uint32(x2Hi>>0)), + math.Float32frombits(uint32(x1Hi>>32)) == math.Float32frombits(uint32(x2Hi>>32)), + } + case v128CmpTypeF32x4Ne: + result = []bool{ + math.Float32frombits(uint32(x1Lo>>0)) != math.Float32frombits(uint32(x2Lo>>0)), + math.Float32frombits(uint32(x1Lo>>32)) != math.Float32frombits(uint32(x2Lo>>32)), + math.Float32frombits(uint32(x1Hi>>0)) != math.Float32frombits(uint32(x2Hi>>0)), + math.Float32frombits(uint32(x1Hi>>32)) != math.Float32frombits(uint32(x2Hi>>32)), + } + case v128CmpTypeF32x4Lt: + result = []bool{ + math.Float32frombits(uint32(x1Lo>>0)) < math.Float32frombits(uint32(x2Lo>>0)), + math.Float32frombits(uint32(x1Lo>>32)) < math.Float32frombits(uint32(x2Lo>>32)), + math.Float32frombits(uint32(x1Hi>>0)) < math.Float32frombits(uint32(x2Hi>>0)), + math.Float32frombits(uint32(x1Hi>>32)) < math.Float32frombits(uint32(x2Hi>>32)), + } + case v128CmpTypeF32x4Gt: + result = []bool{ + math.Float32frombits(uint32(x1Lo>>0)) > math.Float32frombits(uint32(x2Lo>>0)), + math.Float32frombits(uint32(x1Lo>>32)) > math.Float32frombits(uint32(x2Lo>>32)), + math.Float32frombits(uint32(x1Hi>>0)) > math.Float32frombits(uint32(x2Hi>>0)), + math.Float32frombits(uint32(x1Hi>>32)) > math.Float32frombits(uint32(x2Hi>>32)), + } + case v128CmpTypeF32x4Le: + result = []bool{ + math.Float32frombits(uint32(x1Lo>>0)) <= math.Float32frombits(uint32(x2Lo>>0)), + math.Float32frombits(uint32(x1Lo>>32)) <= math.Float32frombits(uint32(x2Lo>>32)), + math.Float32frombits(uint32(x1Hi>>0)) <= math.Float32frombits(uint32(x2Hi>>0)), + math.Float32frombits(uint32(x1Hi>>32)) <= math.Float32frombits(uint32(x2Hi>>32)), + } + case v128CmpTypeF32x4Ge: + result = []bool{ + math.Float32frombits(uint32(x1Lo>>0)) >= math.Float32frombits(uint32(x2Lo>>0)), + math.Float32frombits(uint32(x1Lo>>32)) >= math.Float32frombits(uint32(x2Lo>>32)), + math.Float32frombits(uint32(x1Hi>>0)) >= math.Float32frombits(uint32(x2Hi>>0)), + math.Float32frombits(uint32(x1Hi>>32)) >= math.Float32frombits(uint32(x2Hi>>32)), + } + case v128CmpTypeF64x2Eq: + result = []bool{ + math.Float64frombits(x1Lo) == math.Float64frombits(x2Lo), + math.Float64frombits(x1Hi) == math.Float64frombits(x2Hi), + } + case v128CmpTypeF64x2Ne: + result = []bool{ + math.Float64frombits(x1Lo) != math.Float64frombits(x2Lo), + math.Float64frombits(x1Hi) != math.Float64frombits(x2Hi), + } + case v128CmpTypeF64x2Lt: + result = []bool{ + math.Float64frombits(x1Lo) < math.Float64frombits(x2Lo), + math.Float64frombits(x1Hi) < math.Float64frombits(x2Hi), + } + case v128CmpTypeF64x2Gt: + result = []bool{ + math.Float64frombits(x1Lo) > math.Float64frombits(x2Lo), + math.Float64frombits(x1Hi) > math.Float64frombits(x2Hi), + } + case v128CmpTypeF64x2Le: + result = []bool{ + math.Float64frombits(x1Lo) <= math.Float64frombits(x2Lo), + math.Float64frombits(x1Hi) <= math.Float64frombits(x2Hi), + } + case v128CmpTypeF64x2Ge: + result = []bool{ + math.Float64frombits(x1Lo) >= math.Float64frombits(x2Lo), + math.Float64frombits(x1Hi) >= math.Float64frombits(x2Hi), + } + } + + var retLo, retHi uint64 + laneNum := len(result) + switch laneNum { + case 16: + for i, b := range result { + if b { + if i < 8 { + retLo |= 0xff << (i * 8) + } else { + retHi |= 0xff << ((i - 8) * 8) + } + } + } + case 8: + for i, b := range result { + if b { + if i < 4 { + retLo |= 0xffff << (i * 16) + } else { + retHi |= 0xffff << ((i - 4) * 16) + } + } + } + case 4: + for i, b := range result { + if b { + if i < 2 { + retLo |= 0xffff_ffff << (i * 32) + } else { + retHi |= 0xffff_ffff << ((i - 2) * 32) + } + } + } + case 2: + if result[0] { + retLo = ^uint64(0) + } + if result[1] { + retHi = ^uint64(0) + } + } + + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128AddSat: + x2hi, x2Lo := ce.popValue(), ce.popValue() + x1hi, x1Lo := ce.popValue(), ce.popValue() + + var retLo, retHi uint64 + + // Lane-wise addition while saturating the overflowing values. + // https://github.com/WebAssembly/spec/blob/wg-2.0.draft1/proposals/simd/SIMD.md#saturating-integer-addition + switch op.B1 { + case shapeI8x16: + for i := 0; i < 16; i++ { + var v, w byte + if i < 8 { + v, w = byte(x1Lo>>(i*8)), byte(x2Lo>>(i*8)) + } else { + v, w = byte(x1hi>>((i-8)*8)), byte(x2hi>>((i-8)*8)) + } + + var uv uint64 + if op.B3 { // signed + if subbed := int64(int8(v)) + int64(int8(w)); subbed < math.MinInt8 { + uv = uint64(byte(0x80)) + } else if subbed > math.MaxInt8 { + uv = uint64(byte(0x7f)) + } else { + uv = uint64(byte(int8(subbed))) + } + } else { + if subbed := int64(v) + int64(w); subbed < 0 { + uv = uint64(byte(0)) + } else if subbed > math.MaxUint8 { + uv = uint64(byte(0xff)) + } else { + uv = uint64(byte(subbed)) + } + } + + if i < 8 { // first 8 lanes are on lower 64bits. + retLo |= uv << (i * 8) + } else { + retHi |= uv << ((i - 8) * 8) + } + } + case shapeI16x8: + for i := 0; i < 8; i++ { + var v, w uint16 + if i < 4 { + v, w = uint16(x1Lo>>(i*16)), uint16(x2Lo>>(i*16)) + } else { + v, w = uint16(x1hi>>((i-4)*16)), uint16(x2hi>>((i-4)*16)) + } + + var uv uint64 + if op.B3 { // signed + if added := int64(int16(v)) + int64(int16(w)); added < math.MinInt16 { + uv = uint64(uint16(0x8000)) + } else if added > math.MaxInt16 { + uv = uint64(uint16(0x7fff)) + } else { + uv = uint64(uint16(int16(added))) + } + } else { + if added := int64(v) + int64(w); added < 0 { + uv = uint64(uint16(0)) + } else if added > math.MaxUint16 { + uv = uint64(uint16(0xffff)) + } else { + uv = uint64(uint16(added)) + } + } + + if i < 4 { // first 4 lanes are on lower 64bits. + retLo |= uv << (i * 16) + } else { + retHi |= uv << ((i - 4) * 16) + } + } + } + + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128SubSat: + x2hi, x2Lo := ce.popValue(), ce.popValue() + x1hi, x1Lo := ce.popValue(), ce.popValue() + + var retLo, retHi uint64 + + // Lane-wise subtraction while saturating the overflowing values. + // https://github.com/WebAssembly/spec/blob/wg-2.0.draft1/proposals/simd/SIMD.md#saturating-integer-subtraction + switch op.B1 { + case shapeI8x16: + for i := 0; i < 16; i++ { + var v, w byte + if i < 8 { + v, w = byte(x1Lo>>(i*8)), byte(x2Lo>>(i*8)) + } else { + v, w = byte(x1hi>>((i-8)*8)), byte(x2hi>>((i-8)*8)) + } + + var uv uint64 + if op.B3 { // signed + if subbed := int64(int8(v)) - int64(int8(w)); subbed < math.MinInt8 { + uv = uint64(byte(0x80)) + } else if subbed > math.MaxInt8 { + uv = uint64(byte(0x7f)) + } else { + uv = uint64(byte(int8(subbed))) + } + } else { + if subbed := int64(v) - int64(w); subbed < 0 { + uv = uint64(byte(0)) + } else if subbed > math.MaxUint8 { + uv = uint64(byte(0xff)) + } else { + uv = uint64(byte(subbed)) + } + } + + if i < 8 { + retLo |= uv << (i * 8) + } else { + retHi |= uv << ((i - 8) * 8) + } + } + case shapeI16x8: + for i := 0; i < 8; i++ { + var v, w uint16 + if i < 4 { + v, w = uint16(x1Lo>>(i*16)), uint16(x2Lo>>(i*16)) + } else { + v, w = uint16(x1hi>>((i-4)*16)), uint16(x2hi>>((i-4)*16)) + } + + var uv uint64 + if op.B3 { // signed + if subbed := int64(int16(v)) - int64(int16(w)); subbed < math.MinInt16 { + uv = uint64(uint16(0x8000)) + } else if subbed > math.MaxInt16 { + uv = uint64(uint16(0x7fff)) + } else { + uv = uint64(uint16(int16(subbed))) + } + } else { + if subbed := int64(v) - int64(w); subbed < 0 { + uv = uint64(uint16(0)) + } else if subbed > math.MaxUint16 { + uv = uint64(uint16(0xffff)) + } else { + uv = uint64(uint16(subbed)) + } + } + + if i < 4 { + retLo |= uv << (i * 16) + } else { + retHi |= uv << ((i - 4) * 16) + } + } + } + + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Mul: + x2hi, x2lo := ce.popValue(), ce.popValue() + x1hi, x1lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + switch op.B1 { + case shapeI16x8: + retHi = uint64(uint16(x1hi)*uint16(x2hi)) | (uint64(uint16(x1hi>>16)*uint16(x2hi>>16)) << 16) | + (uint64(uint16(x1hi>>32)*uint16(x2hi>>32)) << 32) | (uint64(uint16(x1hi>>48)*uint16(x2hi>>48)) << 48) + retLo = uint64(uint16(x1lo)*uint16(x2lo)) | (uint64(uint16(x1lo>>16)*uint16(x2lo>>16)) << 16) | + (uint64(uint16(x1lo>>32)*uint16(x2lo>>32)) << 32) | (uint64(uint16(x1lo>>48)*uint16(x2lo>>48)) << 48) + case shapeI32x4: + retHi = uint64(uint32(x1hi)*uint32(x2hi)) | (uint64(uint32(x1hi>>32)*uint32(x2hi>>32)) << 32) + retLo = uint64(uint32(x1lo)*uint32(x2lo)) | (uint64(uint32(x1lo>>32)*uint32(x2lo>>32)) << 32) + case shapeI64x2: + retHi = x1hi * x2hi + retLo = x1lo * x2lo + case shapeF32x4: + retHi = mulFloat32bits(uint32(x1hi), uint32(x2hi)) | mulFloat32bits(uint32(x1hi>>32), uint32(x2hi>>32))<<32 + retLo = mulFloat32bits(uint32(x1lo), uint32(x2lo)) | mulFloat32bits(uint32(x1lo>>32), uint32(x2lo>>32))<<32 + case shapeF64x2: + retHi = math.Float64bits(math.Float64frombits(x1hi) * math.Float64frombits(x2hi)) + retLo = math.Float64bits(math.Float64frombits(x1lo) * math.Float64frombits(x2lo)) + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Div: + x2hi, x2lo := ce.popValue(), ce.popValue() + x1hi, x1lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + if op.B1 == shapeF64x2 { + retHi = math.Float64bits(math.Float64frombits(x1hi) / math.Float64frombits(x2hi)) + retLo = math.Float64bits(math.Float64frombits(x1lo) / math.Float64frombits(x2lo)) + } else { + retHi = divFloat32bits(uint32(x1hi), uint32(x2hi)) | divFloat32bits(uint32(x1hi>>32), uint32(x2hi>>32))<<32 + retLo = divFloat32bits(uint32(x1lo), uint32(x2lo)) | divFloat32bits(uint32(x1lo>>32), uint32(x2lo>>32))<<32 + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Neg: + hi, lo := ce.popValue(), ce.popValue() + switch op.B1 { + case shapeI8x16: + lo = uint64(-byte(lo)) | (uint64(-byte(lo>>8)) << 8) | + (uint64(-byte(lo>>16)) << 16) | (uint64(-byte(lo>>24)) << 24) | + (uint64(-byte(lo>>32)) << 32) | (uint64(-byte(lo>>40)) << 40) | + (uint64(-byte(lo>>48)) << 48) | (uint64(-byte(lo>>56)) << 56) + hi = uint64(-byte(hi)) | (uint64(-byte(hi>>8)) << 8) | + (uint64(-byte(hi>>16)) << 16) | (uint64(-byte(hi>>24)) << 24) | + (uint64(-byte(hi>>32)) << 32) | (uint64(-byte(hi>>40)) << 40) | + (uint64(-byte(hi>>48)) << 48) | (uint64(-byte(hi>>56)) << 56) + case shapeI16x8: + hi = uint64(-uint16(hi)) | (uint64(-uint16(hi>>16)) << 16) | + (uint64(-uint16(hi>>32)) << 32) | (uint64(-uint16(hi>>48)) << 48) + lo = uint64(-uint16(lo)) | (uint64(-uint16(lo>>16)) << 16) | + (uint64(-uint16(lo>>32)) << 32) | (uint64(-uint16(lo>>48)) << 48) + case shapeI32x4: + hi = uint64(-uint32(hi)) | (uint64(-uint32(hi>>32)) << 32) + lo = uint64(-uint32(lo)) | (uint64(-uint32(lo>>32)) << 32) + case shapeI64x2: + hi = -hi + lo = -lo + case shapeF32x4: + hi = uint64(math.Float32bits(-math.Float32frombits(uint32(hi)))) | + (uint64(math.Float32bits(-math.Float32frombits(uint32(hi>>32)))) << 32) + lo = uint64(math.Float32bits(-math.Float32frombits(uint32(lo)))) | + (uint64(math.Float32bits(-math.Float32frombits(uint32(lo>>32)))) << 32) + case shapeF64x2: + hi = math.Float64bits(-math.Float64frombits(hi)) + lo = math.Float64bits(-math.Float64frombits(lo)) + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Sqrt: + hi, lo := ce.popValue(), ce.popValue() + if op.B1 == shapeF64x2 { + hi = math.Float64bits(math.Sqrt(math.Float64frombits(hi))) + lo = math.Float64bits(math.Sqrt(math.Float64frombits(lo))) + } else { + hi = uint64(math.Float32bits(float32(math.Sqrt(float64(math.Float32frombits(uint32(hi))))))) | + (uint64(math.Float32bits(float32(math.Sqrt(float64(math.Float32frombits(uint32(hi>>32))))))) << 32) + lo = uint64(math.Float32bits(float32(math.Sqrt(float64(math.Float32frombits(uint32(lo))))))) | + (uint64(math.Float32bits(float32(math.Sqrt(float64(math.Float32frombits(uint32(lo>>32))))))) << 32) + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Abs: + hi, lo := ce.popValue(), ce.popValue() + switch op.B1 { + case shapeI8x16: + lo = uint64(i8Abs(byte(lo))) | (uint64(i8Abs(byte(lo>>8))) << 8) | + (uint64(i8Abs(byte(lo>>16))) << 16) | (uint64(i8Abs(byte(lo>>24))) << 24) | + (uint64(i8Abs(byte(lo>>32))) << 32) | (uint64(i8Abs(byte(lo>>40))) << 40) | + (uint64(i8Abs(byte(lo>>48))) << 48) | (uint64(i8Abs(byte(lo>>56))) << 56) + hi = uint64(i8Abs(byte(hi))) | (uint64(i8Abs(byte(hi>>8))) << 8) | + (uint64(i8Abs(byte(hi>>16))) << 16) | (uint64(i8Abs(byte(hi>>24))) << 24) | + (uint64(i8Abs(byte(hi>>32))) << 32) | (uint64(i8Abs(byte(hi>>40))) << 40) | + (uint64(i8Abs(byte(hi>>48))) << 48) | (uint64(i8Abs(byte(hi>>56))) << 56) + case shapeI16x8: + hi = uint64(i16Abs(uint16(hi))) | (uint64(i16Abs(uint16(hi>>16))) << 16) | + (uint64(i16Abs(uint16(hi>>32))) << 32) | (uint64(i16Abs(uint16(hi>>48))) << 48) + lo = uint64(i16Abs(uint16(lo))) | (uint64(i16Abs(uint16(lo>>16))) << 16) | + (uint64(i16Abs(uint16(lo>>32))) << 32) | (uint64(i16Abs(uint16(lo>>48))) << 48) + case shapeI32x4: + hi = uint64(i32Abs(uint32(hi))) | (uint64(i32Abs(uint32(hi>>32))) << 32) + lo = uint64(i32Abs(uint32(lo))) | (uint64(i32Abs(uint32(lo>>32))) << 32) + case shapeI64x2: + if int64(hi) < 0 { + hi = -hi + } + if int64(lo) < 0 { + lo = -lo + } + case shapeF32x4: + hi = hi &^ (1<<31 | 1<<63) + lo = lo &^ (1<<31 | 1<<63) + case shapeF64x2: + hi = hi &^ (1 << 63) + lo = lo &^ (1 << 63) + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Popcnt: + hi, lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + for i := 0; i < 16; i++ { + var v byte + if i < 8 { + v = byte(lo >> (i * 8)) + } else { + v = byte(hi >> ((i - 8) * 8)) + } + + var cnt uint64 + for i := 0; i < 8; i++ { + if (v>>i)&0b1 != 0 { + cnt++ + } + } + + if i < 8 { + retLo |= cnt << (i * 8) + } else { + retHi |= cnt << ((i - 8) * 8) + } + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Min: + x2hi, x2lo := ce.popValue(), ce.popValue() + x1hi, x1lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + switch op.B1 { + case shapeI8x16: + if op.B3 { // signed + retLo = uint64(i8MinS(uint8(x1lo>>8), uint8(x2lo>>8)))<<8 | uint64(i8MinS(uint8(x1lo), uint8(x2lo))) | + uint64(i8MinS(uint8(x1lo>>24), uint8(x2lo>>24)))<<24 | uint64(i8MinS(uint8(x1lo>>16), uint8(x2lo>>16)))<<16 | + uint64(i8MinS(uint8(x1lo>>40), uint8(x2lo>>40)))<<40 | uint64(i8MinS(uint8(x1lo>>32), uint8(x2lo>>32)))<<32 | + uint64(i8MinS(uint8(x1lo>>56), uint8(x2lo>>56)))<<56 | uint64(i8MinS(uint8(x1lo>>48), uint8(x2lo>>48)))<<48 + retHi = uint64(i8MinS(uint8(x1hi>>8), uint8(x2hi>>8)))<<8 | uint64(i8MinS(uint8(x1hi), uint8(x2hi))) | + uint64(i8MinS(uint8(x1hi>>24), uint8(x2hi>>24)))<<24 | uint64(i8MinS(uint8(x1hi>>16), uint8(x2hi>>16)))<<16 | + uint64(i8MinS(uint8(x1hi>>40), uint8(x2hi>>40)))<<40 | uint64(i8MinS(uint8(x1hi>>32), uint8(x2hi>>32)))<<32 | + uint64(i8MinS(uint8(x1hi>>56), uint8(x2hi>>56)))<<56 | uint64(i8MinS(uint8(x1hi>>48), uint8(x2hi>>48)))<<48 + } else { + retLo = uint64(i8MinU(uint8(x1lo>>8), uint8(x2lo>>8)))<<8 | uint64(i8MinU(uint8(x1lo), uint8(x2lo))) | + uint64(i8MinU(uint8(x1lo>>24), uint8(x2lo>>24)))<<24 | uint64(i8MinU(uint8(x1lo>>16), uint8(x2lo>>16)))<<16 | + uint64(i8MinU(uint8(x1lo>>40), uint8(x2lo>>40)))<<40 | uint64(i8MinU(uint8(x1lo>>32), uint8(x2lo>>32)))<<32 | + uint64(i8MinU(uint8(x1lo>>56), uint8(x2lo>>56)))<<56 | uint64(i8MinU(uint8(x1lo>>48), uint8(x2lo>>48)))<<48 + retHi = uint64(i8MinU(uint8(x1hi>>8), uint8(x2hi>>8)))<<8 | uint64(i8MinU(uint8(x1hi), uint8(x2hi))) | + uint64(i8MinU(uint8(x1hi>>24), uint8(x2hi>>24)))<<24 | uint64(i8MinU(uint8(x1hi>>16), uint8(x2hi>>16)))<<16 | + uint64(i8MinU(uint8(x1hi>>40), uint8(x2hi>>40)))<<40 | uint64(i8MinU(uint8(x1hi>>32), uint8(x2hi>>32)))<<32 | + uint64(i8MinU(uint8(x1hi>>56), uint8(x2hi>>56)))<<56 | uint64(i8MinU(uint8(x1hi>>48), uint8(x2hi>>48)))<<48 + } + case shapeI16x8: + if op.B3 { // signed + retLo = uint64(i16MinS(uint16(x1lo), uint16(x2lo))) | + uint64(i16MinS(uint16(x1lo>>16), uint16(x2lo>>16)))<<16 | + uint64(i16MinS(uint16(x1lo>>32), uint16(x2lo>>32)))<<32 | + uint64(i16MinS(uint16(x1lo>>48), uint16(x2lo>>48)))<<48 + retHi = uint64(i16MinS(uint16(x1hi), uint16(x2hi))) | + uint64(i16MinS(uint16(x1hi>>16), uint16(x2hi>>16)))<<16 | + uint64(i16MinS(uint16(x1hi>>32), uint16(x2hi>>32)))<<32 | + uint64(i16MinS(uint16(x1hi>>48), uint16(x2hi>>48)))<<48 + } else { + retLo = uint64(i16MinU(uint16(x1lo), uint16(x2lo))) | + uint64(i16MinU(uint16(x1lo>>16), uint16(x2lo>>16)))<<16 | + uint64(i16MinU(uint16(x1lo>>32), uint16(x2lo>>32)))<<32 | + uint64(i16MinU(uint16(x1lo>>48), uint16(x2lo>>48)))<<48 + retHi = uint64(i16MinU(uint16(x1hi), uint16(x2hi))) | + uint64(i16MinU(uint16(x1hi>>16), uint16(x2hi>>16)))<<16 | + uint64(i16MinU(uint16(x1hi>>32), uint16(x2hi>>32)))<<32 | + uint64(i16MinU(uint16(x1hi>>48), uint16(x2hi>>48)))<<48 + } + case shapeI32x4: + if op.B3 { // signed + retLo = uint64(i32MinS(uint32(x1lo), uint32(x2lo))) | + uint64(i32MinS(uint32(x1lo>>32), uint32(x2lo>>32)))<<32 + retHi = uint64(i32MinS(uint32(x1hi), uint32(x2hi))) | + uint64(i32MinS(uint32(x1hi>>32), uint32(x2hi>>32)))<<32 + } else { + retLo = uint64(i32MinU(uint32(x1lo), uint32(x2lo))) | + uint64(i32MinU(uint32(x1lo>>32), uint32(x2lo>>32)))<<32 + retHi = uint64(i32MinU(uint32(x1hi), uint32(x2hi))) | + uint64(i32MinU(uint32(x1hi>>32), uint32(x2hi>>32)))<<32 + } + case shapeF32x4: + retHi = wasmCompatMin32bits(uint32(x1hi), uint32(x2hi)) | + wasmCompatMin32bits(uint32(x1hi>>32), uint32(x2hi>>32))<<32 + retLo = wasmCompatMin32bits(uint32(x1lo), uint32(x2lo)) | + wasmCompatMin32bits(uint32(x1lo>>32), uint32(x2lo>>32))<<32 + case shapeF64x2: + retHi = math.Float64bits(moremath.WasmCompatMin64( + math.Float64frombits(x1hi), + math.Float64frombits(x2hi), + )) + retLo = math.Float64bits(moremath.WasmCompatMin64( + math.Float64frombits(x1lo), + math.Float64frombits(x2lo), + )) + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Max: + x2hi, x2lo := ce.popValue(), ce.popValue() + x1hi, x1lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + switch op.B1 { + case shapeI8x16: + if op.B3 { // signed + retLo = uint64(i8MaxS(uint8(x1lo>>8), uint8(x2lo>>8)))<<8 | uint64(i8MaxS(uint8(x1lo), uint8(x2lo))) | + uint64(i8MaxS(uint8(x1lo>>24), uint8(x2lo>>24)))<<24 | uint64(i8MaxS(uint8(x1lo>>16), uint8(x2lo>>16)))<<16 | + uint64(i8MaxS(uint8(x1lo>>40), uint8(x2lo>>40)))<<40 | uint64(i8MaxS(uint8(x1lo>>32), uint8(x2lo>>32)))<<32 | + uint64(i8MaxS(uint8(x1lo>>56), uint8(x2lo>>56)))<<56 | uint64(i8MaxS(uint8(x1lo>>48), uint8(x2lo>>48)))<<48 + retHi = uint64(i8MaxS(uint8(x1hi>>8), uint8(x2hi>>8)))<<8 | uint64(i8MaxS(uint8(x1hi), uint8(x2hi))) | + uint64(i8MaxS(uint8(x1hi>>24), uint8(x2hi>>24)))<<24 | uint64(i8MaxS(uint8(x1hi>>16), uint8(x2hi>>16)))<<16 | + uint64(i8MaxS(uint8(x1hi>>40), uint8(x2hi>>40)))<<40 | uint64(i8MaxS(uint8(x1hi>>32), uint8(x2hi>>32)))<<32 | + uint64(i8MaxS(uint8(x1hi>>56), uint8(x2hi>>56)))<<56 | uint64(i8MaxS(uint8(x1hi>>48), uint8(x2hi>>48)))<<48 + } else { + retLo = uint64(i8MaxU(uint8(x1lo>>8), uint8(x2lo>>8)))<<8 | uint64(i8MaxU(uint8(x1lo), uint8(x2lo))) | + uint64(i8MaxU(uint8(x1lo>>24), uint8(x2lo>>24)))<<24 | uint64(i8MaxU(uint8(x1lo>>16), uint8(x2lo>>16)))<<16 | + uint64(i8MaxU(uint8(x1lo>>40), uint8(x2lo>>40)))<<40 | uint64(i8MaxU(uint8(x1lo>>32), uint8(x2lo>>32)))<<32 | + uint64(i8MaxU(uint8(x1lo>>56), uint8(x2lo>>56)))<<56 | uint64(i8MaxU(uint8(x1lo>>48), uint8(x2lo>>48)))<<48 + retHi = uint64(i8MaxU(uint8(x1hi>>8), uint8(x2hi>>8)))<<8 | uint64(i8MaxU(uint8(x1hi), uint8(x2hi))) | + uint64(i8MaxU(uint8(x1hi>>24), uint8(x2hi>>24)))<<24 | uint64(i8MaxU(uint8(x1hi>>16), uint8(x2hi>>16)))<<16 | + uint64(i8MaxU(uint8(x1hi>>40), uint8(x2hi>>40)))<<40 | uint64(i8MaxU(uint8(x1hi>>32), uint8(x2hi>>32)))<<32 | + uint64(i8MaxU(uint8(x1hi>>56), uint8(x2hi>>56)))<<56 | uint64(i8MaxU(uint8(x1hi>>48), uint8(x2hi>>48)))<<48 + } + case shapeI16x8: + if op.B3 { // signed + retLo = uint64(i16MaxS(uint16(x1lo), uint16(x2lo))) | + uint64(i16MaxS(uint16(x1lo>>16), uint16(x2lo>>16)))<<16 | + uint64(i16MaxS(uint16(x1lo>>32), uint16(x2lo>>32)))<<32 | + uint64(i16MaxS(uint16(x1lo>>48), uint16(x2lo>>48)))<<48 + retHi = uint64(i16MaxS(uint16(x1hi), uint16(x2hi))) | + uint64(i16MaxS(uint16(x1hi>>16), uint16(x2hi>>16)))<<16 | + uint64(i16MaxS(uint16(x1hi>>32), uint16(x2hi>>32)))<<32 | + uint64(i16MaxS(uint16(x1hi>>48), uint16(x2hi>>48)))<<48 + } else { + retLo = uint64(i16MaxU(uint16(x1lo), uint16(x2lo))) | + uint64(i16MaxU(uint16(x1lo>>16), uint16(x2lo>>16)))<<16 | + uint64(i16MaxU(uint16(x1lo>>32), uint16(x2lo>>32)))<<32 | + uint64(i16MaxU(uint16(x1lo>>48), uint16(x2lo>>48)))<<48 + retHi = uint64(i16MaxU(uint16(x1hi), uint16(x2hi))) | + uint64(i16MaxU(uint16(x1hi>>16), uint16(x2hi>>16)))<<16 | + uint64(i16MaxU(uint16(x1hi>>32), uint16(x2hi>>32)))<<32 | + uint64(i16MaxU(uint16(x1hi>>48), uint16(x2hi>>48)))<<48 + } + case shapeI32x4: + if op.B3 { // signed + retLo = uint64(i32MaxS(uint32(x1lo), uint32(x2lo))) | + uint64(i32MaxS(uint32(x1lo>>32), uint32(x2lo>>32)))<<32 + retHi = uint64(i32MaxS(uint32(x1hi), uint32(x2hi))) | + uint64(i32MaxS(uint32(x1hi>>32), uint32(x2hi>>32)))<<32 + } else { + retLo = uint64(i32MaxU(uint32(x1lo), uint32(x2lo))) | + uint64(i32MaxU(uint32(x1lo>>32), uint32(x2lo>>32)))<<32 + retHi = uint64(i32MaxU(uint32(x1hi), uint32(x2hi))) | + uint64(i32MaxU(uint32(x1hi>>32), uint32(x2hi>>32)))<<32 + } + case shapeF32x4: + retHi = wasmCompatMax32bits(uint32(x1hi), uint32(x2hi)) | + wasmCompatMax32bits(uint32(x1hi>>32), uint32(x2hi>>32))<<32 + retLo = wasmCompatMax32bits(uint32(x1lo), uint32(x2lo)) | + wasmCompatMax32bits(uint32(x1lo>>32), uint32(x2lo>>32))<<32 + case shapeF64x2: + retHi = math.Float64bits(moremath.WasmCompatMax64( + math.Float64frombits(x1hi), + math.Float64frombits(x2hi), + )) + retLo = math.Float64bits(moremath.WasmCompatMax64( + math.Float64frombits(x1lo), + math.Float64frombits(x2lo), + )) + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128AvgrU: + x2hi, x2lo := ce.popValue(), ce.popValue() + x1hi, x1lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + switch op.B1 { + case shapeI8x16: + retLo = uint64(i8RoundingAverage(uint8(x1lo>>8), uint8(x2lo>>8)))<<8 | uint64(i8RoundingAverage(uint8(x1lo), uint8(x2lo))) | + uint64(i8RoundingAverage(uint8(x1lo>>24), uint8(x2lo>>24)))<<24 | uint64(i8RoundingAverage(uint8(x1lo>>16), uint8(x2lo>>16)))<<16 | + uint64(i8RoundingAverage(uint8(x1lo>>40), uint8(x2lo>>40)))<<40 | uint64(i8RoundingAverage(uint8(x1lo>>32), uint8(x2lo>>32)))<<32 | + uint64(i8RoundingAverage(uint8(x1lo>>56), uint8(x2lo>>56)))<<56 | uint64(i8RoundingAverage(uint8(x1lo>>48), uint8(x2lo>>48)))<<48 + retHi = uint64(i8RoundingAverage(uint8(x1hi>>8), uint8(x2hi>>8)))<<8 | uint64(i8RoundingAverage(uint8(x1hi), uint8(x2hi))) | + uint64(i8RoundingAverage(uint8(x1hi>>24), uint8(x2hi>>24)))<<24 | uint64(i8RoundingAverage(uint8(x1hi>>16), uint8(x2hi>>16)))<<16 | + uint64(i8RoundingAverage(uint8(x1hi>>40), uint8(x2hi>>40)))<<40 | uint64(i8RoundingAverage(uint8(x1hi>>32), uint8(x2hi>>32)))<<32 | + uint64(i8RoundingAverage(uint8(x1hi>>56), uint8(x2hi>>56)))<<56 | uint64(i8RoundingAverage(uint8(x1hi>>48), uint8(x2hi>>48)))<<48 + case shapeI16x8: + retLo = uint64(i16RoundingAverage(uint16(x1lo), uint16(x2lo))) | + uint64(i16RoundingAverage(uint16(x1lo>>16), uint16(x2lo>>16)))<<16 | + uint64(i16RoundingAverage(uint16(x1lo>>32), uint16(x2lo>>32)))<<32 | + uint64(i16RoundingAverage(uint16(x1lo>>48), uint16(x2lo>>48)))<<48 + retHi = uint64(i16RoundingAverage(uint16(x1hi), uint16(x2hi))) | + uint64(i16RoundingAverage(uint16(x1hi>>16), uint16(x2hi>>16)))<<16 | + uint64(i16RoundingAverage(uint16(x1hi>>32), uint16(x2hi>>32)))<<32 | + uint64(i16RoundingAverage(uint16(x1hi>>48), uint16(x2hi>>48)))<<48 + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Pmin: + x2hi, x2lo := ce.popValue(), ce.popValue() + x1hi, x1lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + if op.B1 == shapeF32x4 { + if flt32(math.Float32frombits(uint32(x2lo)), math.Float32frombits(uint32(x1lo))) { + retLo = x2lo & 0x00000000_ffffffff + } else { + retLo = x1lo & 0x00000000_ffffffff + } + if flt32(math.Float32frombits(uint32(x2lo>>32)), math.Float32frombits(uint32(x1lo>>32))) { + retLo |= x2lo & 0xffffffff_00000000 + } else { + retLo |= x1lo & 0xffffffff_00000000 + } + if flt32(math.Float32frombits(uint32(x2hi)), math.Float32frombits(uint32(x1hi))) { + retHi = x2hi & 0x00000000_ffffffff + } else { + retHi = x1hi & 0x00000000_ffffffff + } + if flt32(math.Float32frombits(uint32(x2hi>>32)), math.Float32frombits(uint32(x1hi>>32))) { + retHi |= x2hi & 0xffffffff_00000000 + } else { + retHi |= x1hi & 0xffffffff_00000000 + } + } else { + if flt64(math.Float64frombits(x2lo), math.Float64frombits(x1lo)) { + retLo = x2lo + } else { + retLo = x1lo + } + if flt64(math.Float64frombits(x2hi), math.Float64frombits(x1hi)) { + retHi = x2hi + } else { + retHi = x1hi + } + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Pmax: + x2hi, x2lo := ce.popValue(), ce.popValue() + x1hi, x1lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + if op.B1 == shapeF32x4 { + if flt32(math.Float32frombits(uint32(x1lo)), math.Float32frombits(uint32(x2lo))) { + retLo = x2lo & 0x00000000_ffffffff + } else { + retLo = x1lo & 0x00000000_ffffffff + } + if flt32(math.Float32frombits(uint32(x1lo>>32)), math.Float32frombits(uint32(x2lo>>32))) { + retLo |= x2lo & 0xffffffff_00000000 + } else { + retLo |= x1lo & 0xffffffff_00000000 + } + if flt32(math.Float32frombits(uint32(x1hi)), math.Float32frombits(uint32(x2hi))) { + retHi = x2hi & 0x00000000_ffffffff + } else { + retHi = x1hi & 0x00000000_ffffffff + } + if flt32(math.Float32frombits(uint32(x1hi>>32)), math.Float32frombits(uint32(x2hi>>32))) { + retHi |= x2hi & 0xffffffff_00000000 + } else { + retHi |= x1hi & 0xffffffff_00000000 + } + } else { + if flt64(math.Float64frombits(x1lo), math.Float64frombits(x2lo)) { + retLo = x2lo + } else { + retLo = x1lo + } + if flt64(math.Float64frombits(x1hi), math.Float64frombits(x2hi)) { + retHi = x2hi + } else { + retHi = x1hi + } + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Ceil: + hi, lo := ce.popValue(), ce.popValue() + if op.B1 == shapeF32x4 { + lo = uint64(math.Float32bits(moremath.WasmCompatCeilF32(math.Float32frombits(uint32(lo))))) | + (uint64(math.Float32bits(moremath.WasmCompatCeilF32(math.Float32frombits(uint32(lo>>32))))) << 32) + hi = uint64(math.Float32bits(moremath.WasmCompatCeilF32(math.Float32frombits(uint32(hi))))) | + (uint64(math.Float32bits(moremath.WasmCompatCeilF32(math.Float32frombits(uint32(hi>>32))))) << 32) + } else { + lo = math.Float64bits(moremath.WasmCompatCeilF64(math.Float64frombits(lo))) + hi = math.Float64bits(moremath.WasmCompatCeilF64(math.Float64frombits(hi))) + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Floor: + hi, lo := ce.popValue(), ce.popValue() + if op.B1 == shapeF32x4 { + lo = uint64(math.Float32bits(moremath.WasmCompatFloorF32(math.Float32frombits(uint32(lo))))) | + (uint64(math.Float32bits(moremath.WasmCompatFloorF32(math.Float32frombits(uint32(lo>>32))))) << 32) + hi = uint64(math.Float32bits(moremath.WasmCompatFloorF32(math.Float32frombits(uint32(hi))))) | + (uint64(math.Float32bits(moremath.WasmCompatFloorF32(math.Float32frombits(uint32(hi>>32))))) << 32) + } else { + lo = math.Float64bits(moremath.WasmCompatFloorF64(math.Float64frombits(lo))) + hi = math.Float64bits(moremath.WasmCompatFloorF64(math.Float64frombits(hi))) + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Trunc: + hi, lo := ce.popValue(), ce.popValue() + if op.B1 == shapeF32x4 { + lo = uint64(math.Float32bits(moremath.WasmCompatTruncF32(math.Float32frombits(uint32(lo))))) | + (uint64(math.Float32bits(moremath.WasmCompatTruncF32(math.Float32frombits(uint32(lo>>32))))) << 32) + hi = uint64(math.Float32bits(moremath.WasmCompatTruncF32(math.Float32frombits(uint32(hi))))) | + (uint64(math.Float32bits(moremath.WasmCompatTruncF32(math.Float32frombits(uint32(hi>>32))))) << 32) + } else { + lo = math.Float64bits(moremath.WasmCompatTruncF64(math.Float64frombits(lo))) + hi = math.Float64bits(moremath.WasmCompatTruncF64(math.Float64frombits(hi))) + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Nearest: + hi, lo := ce.popValue(), ce.popValue() + if op.B1 == shapeF32x4 { + lo = uint64(math.Float32bits(moremath.WasmCompatNearestF32(math.Float32frombits(uint32(lo))))) | + (uint64(math.Float32bits(moremath.WasmCompatNearestF32(math.Float32frombits(uint32(lo>>32))))) << 32) + hi = uint64(math.Float32bits(moremath.WasmCompatNearestF32(math.Float32frombits(uint32(hi))))) | + (uint64(math.Float32bits(moremath.WasmCompatNearestF32(math.Float32frombits(uint32(hi>>32))))) << 32) + } else { + lo = math.Float64bits(moremath.WasmCompatNearestF64(math.Float64frombits(lo))) + hi = math.Float64bits(moremath.WasmCompatNearestF64(math.Float64frombits(hi))) + } + ce.pushValue(lo) + ce.pushValue(hi) + frame.pc++ + case operationKindV128Extend: + hi, lo := ce.popValue(), ce.popValue() + var origin uint64 + if op.B3 { // use lower 64 bits + origin = lo + } else { + origin = hi + } + + signed := op.B2 == 1 + + var retHi, retLo uint64 + switch op.B1 { + case shapeI8x16: + for i := 0; i < 8; i++ { + v8 := byte(origin >> (i * 8)) + + var v16 uint16 + if signed { + v16 = uint16(int8(v8)) + } else { + v16 = uint16(v8) + } + + if i < 4 { + retLo |= uint64(v16) << (i * 16) + } else { + retHi |= uint64(v16) << ((i - 4) * 16) + } + } + case shapeI16x8: + for i := 0; i < 4; i++ { + v16 := uint16(origin >> (i * 16)) + + var v32 uint32 + if signed { + v32 = uint32(int16(v16)) + } else { + v32 = uint32(v16) + } + + if i < 2 { + retLo |= uint64(v32) << (i * 32) + } else { + retHi |= uint64(v32) << ((i - 2) * 32) + } + } + case shapeI32x4: + v32Lo := uint32(origin) + v32Hi := uint32(origin >> 32) + if signed { + retLo = uint64(int32(v32Lo)) + retHi = uint64(int32(v32Hi)) + } else { + retLo = uint64(v32Lo) + retHi = uint64(v32Hi) + } + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128ExtMul: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + var x1, x2 uint64 + if op.B3 { // use lower 64 bits + x1, x2 = x1Lo, x2Lo + } else { + x1, x2 = x1Hi, x2Hi + } + + signed := op.B2 == 1 + + var retLo, retHi uint64 + switch op.B1 { + case shapeI8x16: + for i := 0; i < 8; i++ { + v1, v2 := byte(x1>>(i*8)), byte(x2>>(i*8)) + + var v16 uint16 + if signed { + v16 = uint16(int16(int8(v1)) * int16(int8(v2))) + } else { + v16 = uint16(v1) * uint16(v2) + } + + if i < 4 { + retLo |= uint64(v16) << (i * 16) + } else { + retHi |= uint64(v16) << ((i - 4) * 16) + } + } + case shapeI16x8: + for i := 0; i < 4; i++ { + v1, v2 := uint16(x1>>(i*16)), uint16(x2>>(i*16)) + + var v32 uint32 + if signed { + v32 = uint32(int32(int16(v1)) * int32(int16(v2))) + } else { + v32 = uint32(v1) * uint32(v2) + } + + if i < 2 { + retLo |= uint64(v32) << (i * 32) + } else { + retHi |= uint64(v32) << ((i - 2) * 32) + } + } + case shapeI32x4: + v1Lo, v2Lo := uint32(x1), uint32(x2) + v1Hi, v2Hi := uint32(x1>>32), uint32(x2>>32) + if signed { + retLo = uint64(int64(int32(v1Lo)) * int64(int32(v2Lo))) + retHi = uint64(int64(int32(v1Hi)) * int64(int32(v2Hi))) + } else { + retLo = uint64(v1Lo) * uint64(v2Lo) + retHi = uint64(v1Hi) * uint64(v2Hi) + } + } + + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Q15mulrSatS: + x2hi, x2Lo := ce.popValue(), ce.popValue() + x1hi, x1Lo := ce.popValue(), ce.popValue() + var retLo, retHi uint64 + for i := 0; i < 8; i++ { + var v, w int16 + if i < 4 { + v, w = int16(uint16(x1Lo>>(i*16))), int16(uint16(x2Lo>>(i*16))) + } else { + v, w = int16(uint16(x1hi>>((i-4)*16))), int16(uint16(x2hi>>((i-4)*16))) + } + + var uv uint64 + // https://github.com/WebAssembly/spec/blob/wg-2.0.draft1/proposals/simd/SIMD.md#saturating-integer-q-format-rounding-multiplication + if calc := ((int32(v) * int32(w)) + 0x4000) >> 15; calc < math.MinInt16 { + uv = uint64(uint16(0x8000)) + } else if calc > math.MaxInt16 { + uv = uint64(uint16(0x7fff)) + } else { + uv = uint64(uint16(int16(calc))) + } + + if i < 4 { + retLo |= uv << (i * 16) + } else { + retHi |= uv << ((i - 4) * 16) + } + } + + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128ExtAddPairwise: + hi, lo := ce.popValue(), ce.popValue() + + signed := op.B3 + + var retLo, retHi uint64 + switch op.B1 { + case shapeI8x16: + for i := 0; i < 8; i++ { + var v1, v2 byte + if i < 4 { + v1, v2 = byte(lo>>((i*2)*8)), byte(lo>>((i*2+1)*8)) + } else { + v1, v2 = byte(hi>>(((i-4)*2)*8)), byte(hi>>(((i-4)*2+1)*8)) + } + + var v16 uint16 + if signed { + v16 = uint16(int16(int8(v1)) + int16(int8(v2))) + } else { + v16 = uint16(v1) + uint16(v2) + } + + if i < 4 { + retLo |= uint64(v16) << (i * 16) + } else { + retHi |= uint64(v16) << ((i - 4) * 16) + } + } + case shapeI16x8: + for i := 0; i < 4; i++ { + var v1, v2 uint16 + if i < 2 { + v1, v2 = uint16(lo>>((i*2)*16)), uint16(lo>>((i*2+1)*16)) + } else { + v1, v2 = uint16(hi>>(((i-2)*2)*16)), uint16(hi>>(((i-2)*2+1)*16)) + } + + var v32 uint32 + if signed { + v32 = uint32(int32(int16(v1)) + int32(int16(v2))) + } else { + v32 = uint32(v1) + uint32(v2) + } + + if i < 2 { + retLo |= uint64(v32) << (i * 32) + } else { + retHi |= uint64(v32) << ((i - 2) * 32) + } + } + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128FloatPromote: + _, toPromote := ce.popValue(), ce.popValue() + ce.pushValue(math.Float64bits(float64(math.Float32frombits(uint32(toPromote))))) + ce.pushValue(math.Float64bits(float64(math.Float32frombits(uint32(toPromote >> 32))))) + frame.pc++ + case operationKindV128FloatDemote: + hi, lo := ce.popValue(), ce.popValue() + ce.pushValue( + uint64(math.Float32bits(float32(math.Float64frombits(lo)))) | + (uint64(math.Float32bits(float32(math.Float64frombits(hi)))) << 32), + ) + ce.pushValue(0) + frame.pc++ + case operationKindV128FConvertFromI: + hi, lo := ce.popValue(), ce.popValue() + v1, v2, v3, v4 := uint32(lo), uint32(lo>>32), uint32(hi), uint32(hi>>32) + signed := op.B3 + + var retLo, retHi uint64 + switch op.B1 { // Destination shape. + case shapeF32x4: // f32x4 from signed/unsigned i32x4 + if signed { + retLo = uint64(math.Float32bits(float32(int32(v1)))) | + (uint64(math.Float32bits(float32(int32(v2)))) << 32) + retHi = uint64(math.Float32bits(float32(int32(v3)))) | + (uint64(math.Float32bits(float32(int32(v4)))) << 32) + } else { + retLo = uint64(math.Float32bits(float32(v1))) | + (uint64(math.Float32bits(float32(v2))) << 32) + retHi = uint64(math.Float32bits(float32(v3))) | + (uint64(math.Float32bits(float32(v4))) << 32) + } + case shapeF64x2: // f64x2 from signed/unsigned i32x4 + if signed { + retLo, retHi = math.Float64bits(float64(int32(v1))), math.Float64bits(float64(int32(v2))) + } else { + retLo, retHi = math.Float64bits(float64(v1)), math.Float64bits(float64(v2)) + } + } + + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Narrow: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + signed := op.B3 + + var retLo, retHi uint64 + switch op.B1 { + case shapeI16x8: // signed/unsigned i16x8 to i8x16 + for i := 0; i < 8; i++ { + var v16 uint16 + if i < 4 { + v16 = uint16(x1Lo >> (i * 16)) + } else { + v16 = uint16(x1Hi >> ((i - 4) * 16)) + } + + var v byte + if signed { + if s := int16(v16); s > math.MaxInt8 { + v = math.MaxInt8 + } else if s < math.MinInt8 { + s = math.MinInt8 + v = byte(s) + } else { + v = byte(v16) + } + } else { + if s := int16(v16); s > math.MaxUint8 { + v = math.MaxUint8 + } else if s < 0 { + v = 0 + } else { + v = byte(v16) + } + } + retLo |= uint64(v) << (i * 8) + } + for i := 0; i < 8; i++ { + var v16 uint16 + if i < 4 { + v16 = uint16(x2Lo >> (i * 16)) + } else { + v16 = uint16(x2Hi >> ((i - 4) * 16)) + } + + var v byte + if signed { + if s := int16(v16); s > math.MaxInt8 { + v = math.MaxInt8 + } else if s < math.MinInt8 { + s = math.MinInt8 + v = byte(s) + } else { + v = byte(v16) + } + } else { + if s := int16(v16); s > math.MaxUint8 { + v = math.MaxUint8 + } else if s < 0 { + v = 0 + } else { + v = byte(v16) + } + } + retHi |= uint64(v) << (i * 8) + } + case shapeI32x4: // signed/unsigned i32x4 to i16x8 + for i := 0; i < 4; i++ { + var v32 uint32 + if i < 2 { + v32 = uint32(x1Lo >> (i * 32)) + } else { + v32 = uint32(x1Hi >> ((i - 2) * 32)) + } + + var v uint16 + if signed { + if s := int32(v32); s > math.MaxInt16 { + v = math.MaxInt16 + } else if s < math.MinInt16 { + s = math.MinInt16 + v = uint16(s) + } else { + v = uint16(v32) + } + } else { + if s := int32(v32); s > math.MaxUint16 { + v = math.MaxUint16 + } else if s < 0 { + v = 0 + } else { + v = uint16(v32) + } + } + retLo |= uint64(v) << (i * 16) + } + + for i := 0; i < 4; i++ { + var v32 uint32 + if i < 2 { + v32 = uint32(x2Lo >> (i * 32)) + } else { + v32 = uint32(x2Hi >> ((i - 2) * 32)) + } + + var v uint16 + if signed { + if s := int32(v32); s > math.MaxInt16 { + v = math.MaxInt16 + } else if s < math.MinInt16 { + s = math.MinInt16 + v = uint16(s) + } else { + v = uint16(v32) + } + } else { + if s := int32(v32); s > math.MaxUint16 { + v = math.MaxUint16 + } else if s < 0 { + v = 0 + } else { + v = uint16(v32) + } + } + retHi |= uint64(v) << (i * 16) + } + } + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindV128Dot: + x2Hi, x2Lo := ce.popValue(), ce.popValue() + x1Hi, x1Lo := ce.popValue(), ce.popValue() + ce.pushValue( + uint64(uint32(int32(int16(x1Lo>>0))*int32(int16(x2Lo>>0))+int32(int16(x1Lo>>16))*int32(int16(x2Lo>>16)))) | + (uint64(uint32(int32(int16(x1Lo>>32))*int32(int16(x2Lo>>32))+int32(int16(x1Lo>>48))*int32(int16(x2Lo>>48)))) << 32), + ) + ce.pushValue( + uint64(uint32(int32(int16(x1Hi>>0))*int32(int16(x2Hi>>0))+int32(int16(x1Hi>>16))*int32(int16(x2Hi>>16)))) | + (uint64(uint32(int32(int16(x1Hi>>32))*int32(int16(x2Hi>>32))+int32(int16(x1Hi>>48))*int32(int16(x2Hi>>48)))) << 32), + ) + frame.pc++ + case operationKindV128ITruncSatFromF: + hi, lo := ce.popValue(), ce.popValue() + signed := op.B3 + var retLo, retHi uint64 + + switch op.B1 { + case shapeF32x4: // f32x4 to i32x4 + for i, f64 := range [4]float64{ + math.Trunc(float64(math.Float32frombits(uint32(lo)))), + math.Trunc(float64(math.Float32frombits(uint32(lo >> 32)))), + math.Trunc(float64(math.Float32frombits(uint32(hi)))), + math.Trunc(float64(math.Float32frombits(uint32(hi >> 32)))), + } { + + var v uint32 + if math.IsNaN(f64) { + v = 0 + } else if signed { + if f64 < math.MinInt32 { + f64 = math.MinInt32 + } else if f64 > math.MaxInt32 { + f64 = math.MaxInt32 + } + v = uint32(int32(f64)) + } else { + if f64 < 0 { + f64 = 0 + } else if f64 > math.MaxUint32 { + f64 = math.MaxUint32 + } + v = uint32(f64) + } + + if i < 2 { + retLo |= uint64(v) << (i * 32) + } else { + retHi |= uint64(v) << ((i - 2) * 32) + } + } + + case shapeF64x2: // f64x2 to i32x4 + for i, f := range [2]float64{ + math.Trunc(math.Float64frombits(lo)), + math.Trunc(math.Float64frombits(hi)), + } { + var v uint32 + if math.IsNaN(f) { + v = 0 + } else if signed { + if f < math.MinInt32 { + f = math.MinInt32 + } else if f > math.MaxInt32 { + f = math.MaxInt32 + } + v = uint32(int32(f)) + } else { + if f < 0 { + f = 0 + } else if f > math.MaxUint32 { + f = math.MaxUint32 + } + v = uint32(f) + } + + retLo |= uint64(v) << (i * 32) + } + } + + ce.pushValue(retLo) + ce.pushValue(retHi) + frame.pc++ + case operationKindAtomicMemoryWait: + timeout := int64(ce.popValue()) + exp := ce.popValue() + offset := ce.popMemoryOffset(op) + // Runtime instead of validation error because the spec intends to allow binaries to include + // such instructions as long as they are not executed. + if !memoryInst.Shared { + panic(wasmruntime.ErrRuntimeExpectedSharedMemory) + } + + switch unsignedType(op.B1) { + case unsignedTypeI32: + if offset%4 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + if int(offset) > len(memoryInst.Buffer)-4 { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(memoryInst.Wait32(offset, uint32(exp), timeout, func(mem *wasm.MemoryInstance, offset uint32) uint32 { + mem.Mux.Lock() + defer mem.Mux.Unlock() + value, _ := mem.ReadUint32Le(offset) + return value + })) + case unsignedTypeI64: + if offset%8 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + if int(offset) > len(memoryInst.Buffer)-8 { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(memoryInst.Wait64(offset, exp, timeout, func(mem *wasm.MemoryInstance, offset uint32) uint64 { + mem.Mux.Lock() + defer mem.Mux.Unlock() + value, _ := mem.ReadUint64Le(offset) + return value + })) + } + frame.pc++ + case operationKindAtomicMemoryNotify: + count := ce.popValue() + offset := ce.popMemoryOffset(op) + if offset%4 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + // Just a bounds check + if offset >= memoryInst.Size() { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + res := memoryInst.Notify(offset, uint32(count)) + ce.pushValue(uint64(res)) + frame.pc++ + case operationKindAtomicFence: + // Memory not required for fence only + if memoryInst != nil { + // An empty critical section can be used as a synchronization primitive, which is what + // fence is. Probably, there are no spectests or defined behavior to confirm this yet. + memoryInst.Mux.Lock() + memoryInst.Mux.Unlock() //nolint:staticcheck + } + frame.pc++ + case operationKindAtomicLoad: + offset := ce.popMemoryOffset(op) + switch unsignedType(op.B1) { + case unsignedTypeI32: + if offset%4 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + val, ok := memoryInst.ReadUint32Le(offset) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(uint64(val)) + case unsignedTypeI64: + if offset%8 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + val, ok := memoryInst.ReadUint64Le(offset) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(val) + } + frame.pc++ + case operationKindAtomicLoad8: + offset := ce.popMemoryOffset(op) + memoryInst.Mux.Lock() + val, ok := memoryInst.ReadByte(offset) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(uint64(val)) + frame.pc++ + case operationKindAtomicLoad16: + offset := ce.popMemoryOffset(op) + if offset%2 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + val, ok := memoryInst.ReadUint16Le(offset) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + ce.pushValue(uint64(val)) + frame.pc++ + case operationKindAtomicStore: + val := ce.popValue() + offset := ce.popMemoryOffset(op) + switch unsignedType(op.B1) { + case unsignedTypeI32: + if offset%4 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + ok := memoryInst.WriteUint32Le(offset, uint32(val)) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + case unsignedTypeI64: + if offset%8 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + ok := memoryInst.WriteUint64Le(offset, val) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + } + frame.pc++ + case operationKindAtomicStore8: + val := byte(ce.popValue()) + offset := ce.popMemoryOffset(op) + memoryInst.Mux.Lock() + ok := memoryInst.WriteByte(offset, val) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + frame.pc++ + case operationKindAtomicStore16: + val := uint16(ce.popValue()) + offset := ce.popMemoryOffset(op) + if offset%2 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + ok := memoryInst.WriteUint16Le(offset, val) + memoryInst.Mux.Unlock() + if !ok { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + frame.pc++ + case operationKindAtomicRMW: + val := ce.popValue() + offset := ce.popMemoryOffset(op) + switch unsignedType(op.B1) { + case unsignedTypeI32: + if offset%4 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadUint32Le(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + var newVal uint32 + switch atomicArithmeticOp(op.B2) { + case atomicArithmeticOpAdd: + newVal = old + uint32(val) + case atomicArithmeticOpSub: + newVal = old - uint32(val) + case atomicArithmeticOpAnd: + newVal = old & uint32(val) + case atomicArithmeticOpOr: + newVal = old | uint32(val) + case atomicArithmeticOpXor: + newVal = old ^ uint32(val) + case atomicArithmeticOpNop: + newVal = uint32(val) + } + memoryInst.WriteUint32Le(offset, newVal) + memoryInst.Mux.Unlock() + ce.pushValue(uint64(old)) + case unsignedTypeI64: + if offset%8 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadUint64Le(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + var newVal uint64 + switch atomicArithmeticOp(op.B2) { + case atomicArithmeticOpAdd: + newVal = old + val + case atomicArithmeticOpSub: + newVal = old - val + case atomicArithmeticOpAnd: + newVal = old & val + case atomicArithmeticOpOr: + newVal = old | val + case atomicArithmeticOpXor: + newVal = old ^ val + case atomicArithmeticOpNop: + newVal = val + } + memoryInst.WriteUint64Le(offset, newVal) + memoryInst.Mux.Unlock() + ce.pushValue(old) + } + frame.pc++ + case operationKindAtomicRMW8: + val := ce.popValue() + offset := ce.popMemoryOffset(op) + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadByte(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + arg := byte(val) + var newVal byte + switch atomicArithmeticOp(op.B2) { + case atomicArithmeticOpAdd: + newVal = old + arg + case atomicArithmeticOpSub: + newVal = old - arg + case atomicArithmeticOpAnd: + newVal = old & arg + case atomicArithmeticOpOr: + newVal = old | arg + case atomicArithmeticOpXor: + newVal = old ^ arg + case atomicArithmeticOpNop: + newVal = arg + } + memoryInst.WriteByte(offset, newVal) + memoryInst.Mux.Unlock() + ce.pushValue(uint64(old)) + frame.pc++ + case operationKindAtomicRMW16: + val := ce.popValue() + offset := ce.popMemoryOffset(op) + if offset%2 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadUint16Le(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + arg := uint16(val) + var newVal uint16 + switch atomicArithmeticOp(op.B2) { + case atomicArithmeticOpAdd: + newVal = old + arg + case atomicArithmeticOpSub: + newVal = old - arg + case atomicArithmeticOpAnd: + newVal = old & arg + case atomicArithmeticOpOr: + newVal = old | arg + case atomicArithmeticOpXor: + newVal = old ^ arg + case atomicArithmeticOpNop: + newVal = arg + } + memoryInst.WriteUint16Le(offset, newVal) + memoryInst.Mux.Unlock() + ce.pushValue(uint64(old)) + frame.pc++ + case operationKindAtomicRMWCmpxchg: + rep := ce.popValue() + exp := ce.popValue() + offset := ce.popMemoryOffset(op) + switch unsignedType(op.B1) { + case unsignedTypeI32: + if offset%4 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadUint32Le(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if old == uint32(exp) { + memoryInst.WriteUint32Le(offset, uint32(rep)) + } + memoryInst.Mux.Unlock() + ce.pushValue(uint64(old)) + case unsignedTypeI64: + if offset%8 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadUint64Le(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if old == exp { + memoryInst.WriteUint64Le(offset, rep) + } + memoryInst.Mux.Unlock() + ce.pushValue(old) + } + frame.pc++ + case operationKindAtomicRMW8Cmpxchg: + rep := byte(ce.popValue()) + exp := byte(ce.popValue()) + offset := ce.popMemoryOffset(op) + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadByte(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if old == exp { + memoryInst.WriteByte(offset, rep) + } + memoryInst.Mux.Unlock() + ce.pushValue(uint64(old)) + frame.pc++ + case operationKindAtomicRMW16Cmpxchg: + rep := uint16(ce.popValue()) + exp := uint16(ce.popValue()) + offset := ce.popMemoryOffset(op) + if offset%2 != 0 { + panic(wasmruntime.ErrRuntimeUnalignedAtomic) + } + memoryInst.Mux.Lock() + old, ok := memoryInst.ReadUint16Le(offset) + if !ok { + memoryInst.Mux.Unlock() + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + if old == exp { + memoryInst.WriteUint16Le(offset, rep) + } + memoryInst.Mux.Unlock() + ce.pushValue(uint64(old)) + frame.pc++ + default: + frame.pc++ + } + } + ce.popFrame() +} + +func wasmCompatMax32bits(v1, v2 uint32) uint64 { + return uint64(math.Float32bits(moremath.WasmCompatMax32( + math.Float32frombits(v1), + math.Float32frombits(v2), + ))) +} + +func wasmCompatMin32bits(v1, v2 uint32) uint64 { + return uint64(math.Float32bits(moremath.WasmCompatMin32( + math.Float32frombits(v1), + math.Float32frombits(v2), + ))) +} + +func addFloat32bits(v1, v2 uint32) uint64 { + return uint64(math.Float32bits(math.Float32frombits(v1) + math.Float32frombits(v2))) +} + +func subFloat32bits(v1, v2 uint32) uint64 { + return uint64(math.Float32bits(math.Float32frombits(v1) - math.Float32frombits(v2))) +} + +func mulFloat32bits(v1, v2 uint32) uint64 { + return uint64(math.Float32bits(math.Float32frombits(v1) * math.Float32frombits(v2))) +} + +func divFloat32bits(v1, v2 uint32) uint64 { + return uint64(math.Float32bits(math.Float32frombits(v1) / math.Float32frombits(v2))) +} + +// https://www.w3.org/TR/2022/WD-wasm-core-2-20220419/exec/numerics.html#xref-exec-numerics-op-flt-mathrm-flt-n-z-1-z-2 +func flt32(z1, z2 float32) bool { + if z1 != z1 || z2 != z2 { + return false + } else if z1 == z2 { + return false + } else if math.IsInf(float64(z1), 1) { + return false + } else if math.IsInf(float64(z1), -1) { + return true + } else if math.IsInf(float64(z2), 1) { + return true + } else if math.IsInf(float64(z2), -1) { + return false + } + return z1 < z2 +} + +// https://www.w3.org/TR/2022/WD-wasm-core-2-20220419/exec/numerics.html#xref-exec-numerics-op-flt-mathrm-flt-n-z-1-z-2 +func flt64(z1, z2 float64) bool { + if z1 != z1 || z2 != z2 { + return false + } else if z1 == z2 { + return false + } else if math.IsInf(z1, 1) { + return false + } else if math.IsInf(z1, -1) { + return true + } else if math.IsInf(z2, 1) { + return true + } else if math.IsInf(z2, -1) { + return false + } + return z1 < z2 +} + +func i8RoundingAverage(v1, v2 byte) byte { + // https://github.com/WebAssembly/spec/blob/wg-2.0.draft1/proposals/simd/SIMD.md#lane-wise-integer-rounding-average + return byte((uint16(v1) + uint16(v2) + uint16(1)) / 2) +} + +func i16RoundingAverage(v1, v2 uint16) uint16 { + // https://github.com/WebAssembly/spec/blob/wg-2.0.draft1/proposals/simd/SIMD.md#lane-wise-integer-rounding-average + return uint16((uint32(v1) + uint32(v2) + 1) / 2) +} + +func i8Abs(v byte) byte { + if i := int8(v); i < 0 { + return byte(-i) + } else { + return byte(i) + } +} + +func i8MaxU(v1, v2 byte) byte { + if v1 < v2 { + return v2 + } else { + return v1 + } +} + +func i8MinU(v1, v2 byte) byte { + if v1 > v2 { + return v2 + } else { + return v1 + } +} + +func i8MaxS(v1, v2 byte) byte { + if int8(v1) < int8(v2) { + return v2 + } else { + return v1 + } +} + +func i8MinS(v1, v2 byte) byte { + if int8(v1) > int8(v2) { + return v2 + } else { + return v1 + } +} + +func i16MaxU(v1, v2 uint16) uint16 { + if v1 < v2 { + return v2 + } else { + return v1 + } +} + +func i16MinU(v1, v2 uint16) uint16 { + if v1 > v2 { + return v2 + } else { + return v1 + } +} + +func i16MaxS(v1, v2 uint16) uint16 { + if int16(v1) < int16(v2) { + return v2 + } else { + return v1 + } +} + +func i16MinS(v1, v2 uint16) uint16 { + if int16(v1) > int16(v2) { + return v2 + } else { + return v1 + } +} + +func i32MaxU(v1, v2 uint32) uint32 { + if v1 < v2 { + return v2 + } else { + return v1 + } +} + +func i32MinU(v1, v2 uint32) uint32 { + if v1 > v2 { + return v2 + } else { + return v1 + } +} + +func i32MaxS(v1, v2 uint32) uint32 { + if int32(v1) < int32(v2) { + return v2 + } else { + return v1 + } +} + +func i32MinS(v1, v2 uint32) uint32 { + if int32(v1) > int32(v2) { + return v2 + } else { + return v1 + } +} + +func i16Abs(v uint16) uint16 { + if i := int16(v); i < 0 { + return uint16(-i) + } else { + return uint16(i) + } +} + +func i32Abs(v uint32) uint32 { + if i := int32(v); i < 0 { + return uint32(-i) + } else { + return uint32(i) + } +} + +func (ce *callEngine) callNativeFuncWithListener(ctx context.Context, m *wasm.ModuleInstance, f *function, fnl experimental.FunctionListener) context.Context { + def, typ := f.definition(), f.funcType + + ce.stackIterator.reset(ce.stack, ce.frames, f) + fnl.Before(ctx, m, def, ce.peekValues(typ.ParamNumInUint64), &ce.stackIterator) + ce.stackIterator.clear() + ce.callNativeFunc(ctx, m, f) + fnl.After(ctx, m, def, ce.peekValues(typ.ResultNumInUint64)) + return ctx +} + +// popMemoryOffset takes a memory offset off the stack for use in load and store instructions. +// As the top of stack value is 64-bit, this ensures it is in range before returning it. +func (ce *callEngine) popMemoryOffset(op *unionOperation) uint32 { + offset := op.U2 + ce.popValue() + if offset > math.MaxUint32 { + panic(wasmruntime.ErrRuntimeOutOfBoundsMemoryAccess) + } + return uint32(offset) +} + +func (ce *callEngine) callGoFuncWithStack(ctx context.Context, m *wasm.ModuleInstance, f *function) { + typ := f.funcType + paramLen := typ.ParamNumInUint64 + resultLen := typ.ResultNumInUint64 + stackLen := paramLen + + // In the interpreter engine, ce.stack may only have capacity to store + // parameters. Grow when there are more results than parameters. + if growLen := resultLen - paramLen; growLen > 0 { + for i := 0; i < growLen; i++ { + ce.stack = append(ce.stack, 0) + } + stackLen += growLen + } + + // Pass the stack elements to the go function. + stack := ce.stack[len(ce.stack)-stackLen:] + ce.callGoFunc(ctx, m, f, stack) + + // Shrink the stack when there were more parameters than results. + if shrinkLen := paramLen - resultLen; shrinkLen > 0 { + ce.stack = ce.stack[0 : len(ce.stack)-shrinkLen] + } +} diff --git a/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/operations.go b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/operations.go new file mode 100644 index 000000000..3087a718f --- /dev/null +++ b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/operations.go @@ -0,0 +1,2812 @@ +package interpreter + +import ( + "fmt" + "math" + "strings" +) + +// unsignedInt represents unsigned 32-bit or 64-bit integers. +type unsignedInt byte + +const ( + unsignedInt32 unsignedInt = iota + unsignedInt64 +) + +// String implements fmt.Stringer. +func (s unsignedInt) String() (ret string) { + switch s { + case unsignedInt32: + ret = "i32" + case unsignedInt64: + ret = "i64" + } + return +} + +// signedInt represents signed or unsigned integers. +type signedInt byte + +const ( + signedInt32 signedInt = iota + signedInt64 + signedUint32 + signedUint64 +) + +// String implements fmt.Stringer. +func (s signedInt) String() (ret string) { + switch s { + case signedUint32: + ret = "u32" + case signedUint64: + ret = "u64" + case signedInt32: + ret = "s32" + case signedInt64: + ret = "s64" + } + return +} + +// float represents the scalar double or single precision floating points. +type float byte + +const ( + f32 float = iota + f64 +) + +// String implements fmt.Stringer. +func (s float) String() (ret string) { + switch s { + case f32: + ret = "f32" + case f64: + ret = "f64" + } + return +} + +// unsignedType is the union of unsignedInt, float and V128 vector type. +type unsignedType byte + +const ( + unsignedTypeI32 unsignedType = iota + unsignedTypeI64 + unsignedTypeF32 + unsignedTypeF64 + unsignedTypeV128 + unsignedTypeUnknown +) + +// String implements fmt.Stringer. +func (s unsignedType) String() (ret string) { + switch s { + case unsignedTypeI32: + ret = "i32" + case unsignedTypeI64: + ret = "i64" + case unsignedTypeF32: + ret = "f32" + case unsignedTypeF64: + ret = "f64" + case unsignedTypeV128: + ret = "v128" + case unsignedTypeUnknown: + ret = "unknown" + } + return +} + +// signedType is the union of signedInt and float types. +type signedType byte + +const ( + signedTypeInt32 signedType = iota + signedTypeUint32 + signedTypeInt64 + signedTypeUint64 + signedTypeFloat32 + signedTypeFloat64 +) + +// String implements fmt.Stringer. +func (s signedType) String() (ret string) { + switch s { + case signedTypeInt32: + ret = "s32" + case signedTypeUint32: + ret = "u32" + case signedTypeInt64: + ret = "s64" + case signedTypeUint64: + ret = "u64" + case signedTypeFloat32: + ret = "f32" + case signedTypeFloat64: + ret = "f64" + } + return +} + +// operationKind is the Kind of each implementation of Operation interface. +type operationKind uint16 + +// String implements fmt.Stringer. +func (o operationKind) String() (ret string) { + switch o { + case operationKindUnreachable: + ret = "Unreachable" + case operationKindLabel: + ret = "label" + case operationKindBr: + ret = "Br" + case operationKindBrIf: + ret = "BrIf" + case operationKindBrTable: + ret = "BrTable" + case operationKindCall: + ret = "Call" + case operationKindCallIndirect: + ret = "CallIndirect" + case operationKindDrop: + ret = "Drop" + case operationKindSelect: + ret = "Select" + case operationKindPick: + ret = "Pick" + case operationKindSet: + ret = "Swap" + case operationKindGlobalGet: + ret = "GlobalGet" + case operationKindGlobalSet: + ret = "GlobalSet" + case operationKindLoad: + ret = "Load" + case operationKindLoad8: + ret = "Load8" + case operationKindLoad16: + ret = "Load16" + case operationKindLoad32: + ret = "Load32" + case operationKindStore: + ret = "Store" + case operationKindStore8: + ret = "Store8" + case operationKindStore16: + ret = "Store16" + case operationKindStore32: + ret = "Store32" + case operationKindMemorySize: + ret = "MemorySize" + case operationKindMemoryGrow: + ret = "MemoryGrow" + case operationKindConstI32: + ret = "ConstI32" + case operationKindConstI64: + ret = "ConstI64" + case operationKindConstF32: + ret = "ConstF32" + case operationKindConstF64: + ret = "ConstF64" + case operationKindEq: + ret = "Eq" + case operationKindNe: + ret = "Ne" + case operationKindEqz: + ret = "Eqz" + case operationKindLt: + ret = "Lt" + case operationKindGt: + ret = "Gt" + case operationKindLe: + ret = "Le" + case operationKindGe: + ret = "Ge" + case operationKindAdd: + ret = "Add" + case operationKindSub: + ret = "Sub" + case operationKindMul: + ret = "Mul" + case operationKindClz: + ret = "Clz" + case operationKindCtz: + ret = "Ctz" + case operationKindPopcnt: + ret = "Popcnt" + case operationKindDiv: + ret = "Div" + case operationKindRem: + ret = "Rem" + case operationKindAnd: + ret = "And" + case operationKindOr: + ret = "Or" + case operationKindXor: + ret = "Xor" + case operationKindShl: + ret = "Shl" + case operationKindShr: + ret = "Shr" + case operationKindRotl: + ret = "Rotl" + case operationKindRotr: + ret = "Rotr" + case operationKindAbs: + ret = "Abs" + case operationKindNeg: + ret = "Neg" + case operationKindCeil: + ret = "Ceil" + case operationKindFloor: + ret = "Floor" + case operationKindTrunc: + ret = "Trunc" + case operationKindNearest: + ret = "Nearest" + case operationKindSqrt: + ret = "Sqrt" + case operationKindMin: + ret = "Min" + case operationKindMax: + ret = "Max" + case operationKindCopysign: + ret = "Copysign" + case operationKindI32WrapFromI64: + ret = "I32WrapFromI64" + case operationKindITruncFromF: + ret = "ITruncFromF" + case operationKindFConvertFromI: + ret = "FConvertFromI" + case operationKindF32DemoteFromF64: + ret = "F32DemoteFromF64" + case operationKindF64PromoteFromF32: + ret = "F64PromoteFromF32" + case operationKindI32ReinterpretFromF32: + ret = "I32ReinterpretFromF32" + case operationKindI64ReinterpretFromF64: + ret = "I64ReinterpretFromF64" + case operationKindF32ReinterpretFromI32: + ret = "F32ReinterpretFromI32" + case operationKindF64ReinterpretFromI64: + ret = "F64ReinterpretFromI64" + case operationKindExtend: + ret = "Extend" + case operationKindMemoryInit: + ret = "MemoryInit" + case operationKindDataDrop: + ret = "DataDrop" + case operationKindMemoryCopy: + ret = "MemoryCopy" + case operationKindMemoryFill: + ret = "MemoryFill" + case operationKindTableInit: + ret = "TableInit" + case operationKindElemDrop: + ret = "ElemDrop" + case operationKindTableCopy: + ret = "TableCopy" + case operationKindRefFunc: + ret = "RefFunc" + case operationKindTableGet: + ret = "TableGet" + case operationKindTableSet: + ret = "TableSet" + case operationKindTableSize: + ret = "TableSize" + case operationKindTableGrow: + ret = "TableGrow" + case operationKindTableFill: + ret = "TableFill" + case operationKindV128Const: + ret = "ConstV128" + case operationKindV128Add: + ret = "V128Add" + case operationKindV128Sub: + ret = "V128Sub" + case operationKindV128Load: + ret = "V128Load" + case operationKindV128LoadLane: + ret = "V128LoadLane" + case operationKindV128Store: + ret = "V128Store" + case operationKindV128StoreLane: + ret = "V128StoreLane" + case operationKindV128ExtractLane: + ret = "V128ExtractLane" + case operationKindV128ReplaceLane: + ret = "V128ReplaceLane" + case operationKindV128Splat: + ret = "V128Splat" + case operationKindV128Shuffle: + ret = "V128Shuffle" + case operationKindV128Swizzle: + ret = "V128Swizzle" + case operationKindV128AnyTrue: + ret = "V128AnyTrue" + case operationKindV128AllTrue: + ret = "V128AllTrue" + case operationKindV128And: + ret = "V128And" + case operationKindV128Not: + ret = "V128Not" + case operationKindV128Or: + ret = "V128Or" + case operationKindV128Xor: + ret = "V128Xor" + case operationKindV128Bitselect: + ret = "V128Bitselect" + case operationKindV128AndNot: + ret = "V128AndNot" + case operationKindV128BitMask: + ret = "V128BitMask" + case operationKindV128Shl: + ret = "V128Shl" + case operationKindV128Shr: + ret = "V128Shr" + case operationKindV128Cmp: + ret = "V128Cmp" + case operationKindSignExtend32From8: + ret = "SignExtend32From8" + case operationKindSignExtend32From16: + ret = "SignExtend32From16" + case operationKindSignExtend64From8: + ret = "SignExtend64From8" + case operationKindSignExtend64From16: + ret = "SignExtend64From16" + case operationKindSignExtend64From32: + ret = "SignExtend64From32" + case operationKindV128AddSat: + ret = "V128AddSat" + case operationKindV128SubSat: + ret = "V128SubSat" + case operationKindV128Mul: + ret = "V128Mul" + case operationKindV128Div: + ret = "V128Div" + case operationKindV128Neg: + ret = "V128Neg" + case operationKindV128Sqrt: + ret = "V128Sqrt" + case operationKindV128Abs: + ret = "V128Abs" + case operationKindV128Popcnt: + ret = "V128Popcnt" + case operationKindV128Min: + ret = "V128Min" + case operationKindV128Max: + ret = "V128Max" + case operationKindV128AvgrU: + ret = "V128AvgrU" + case operationKindV128Ceil: + ret = "V128Ceil" + case operationKindV128Floor: + ret = "V128Floor" + case operationKindV128Trunc: + ret = "V128Trunc" + case operationKindV128Nearest: + ret = "V128Nearest" + case operationKindV128Pmin: + ret = "V128Pmin" + case operationKindV128Pmax: + ret = "V128Pmax" + case operationKindV128Extend: + ret = "V128Extend" + case operationKindV128ExtMul: + ret = "V128ExtMul" + case operationKindV128Q15mulrSatS: + ret = "V128Q15mulrSatS" + case operationKindV128ExtAddPairwise: + ret = "V128ExtAddPairwise" + case operationKindV128FloatPromote: + ret = "V128FloatPromote" + case operationKindV128FloatDemote: + ret = "V128FloatDemote" + case operationKindV128FConvertFromI: + ret = "V128FConvertFromI" + case operationKindV128Dot: + ret = "V128Dot" + case operationKindV128Narrow: + ret = "V128Narrow" + case operationKindV128ITruncSatFromF: + ret = "V128ITruncSatFromF" + case operationKindBuiltinFunctionCheckExitCode: + ret = "BuiltinFunctionCheckExitCode" + case operationKindAtomicMemoryWait: + ret = "operationKindAtomicMemoryWait" + case operationKindAtomicMemoryNotify: + ret = "operationKindAtomicMemoryNotify" + case operationKindAtomicFence: + ret = "operationKindAtomicFence" + case operationKindAtomicLoad: + ret = "operationKindAtomicLoad" + case operationKindAtomicLoad8: + ret = "operationKindAtomicLoad8" + case operationKindAtomicLoad16: + ret = "operationKindAtomicLoad16" + case operationKindAtomicStore: + ret = "operationKindAtomicStore" + case operationKindAtomicStore8: + ret = "operationKindAtomicStore8" + case operationKindAtomicStore16: + ret = "operationKindAtomicStore16" + case operationKindAtomicRMW: + ret = "operationKindAtomicRMW" + case operationKindAtomicRMW8: + ret = "operationKindAtomicRMW8" + case operationKindAtomicRMW16: + ret = "operationKindAtomicRMW16" + case operationKindAtomicRMWCmpxchg: + ret = "operationKindAtomicRMWCmpxchg" + case operationKindAtomicRMW8Cmpxchg: + ret = "operationKindAtomicRMW8Cmpxchg" + case operationKindAtomicRMW16Cmpxchg: + ret = "operationKindAtomicRMW16Cmpxchg" + default: + panic(fmt.Errorf("unknown operation %d", o)) + } + return +} + +const ( + // operationKindUnreachable is the Kind for NewOperationUnreachable. + operationKindUnreachable operationKind = iota + // operationKindLabel is the Kind for NewOperationLabel. + operationKindLabel + // operationKindBr is the Kind for NewOperationBr. + operationKindBr + // operationKindBrIf is the Kind for NewOperationBrIf. + operationKindBrIf + // operationKindBrTable is the Kind for NewOperationBrTable. + operationKindBrTable + // operationKindCall is the Kind for NewOperationCall. + operationKindCall + // operationKindCallIndirect is the Kind for NewOperationCallIndirect. + operationKindCallIndirect + // operationKindDrop is the Kind for NewOperationDrop. + operationKindDrop + // operationKindSelect is the Kind for NewOperationSelect. + operationKindSelect + // operationKindPick is the Kind for NewOperationPick. + operationKindPick + // operationKindSet is the Kind for NewOperationSet. + operationKindSet + // operationKindGlobalGet is the Kind for NewOperationGlobalGet. + operationKindGlobalGet + // operationKindGlobalSet is the Kind for NewOperationGlobalSet. + operationKindGlobalSet + // operationKindLoad is the Kind for NewOperationLoad. + operationKindLoad + // operationKindLoad8 is the Kind for NewOperationLoad8. + operationKindLoad8 + // operationKindLoad16 is the Kind for NewOperationLoad16. + operationKindLoad16 + // operationKindLoad32 is the Kind for NewOperationLoad32. + operationKindLoad32 + // operationKindStore is the Kind for NewOperationStore. + operationKindStore + // operationKindStore8 is the Kind for NewOperationStore8. + operationKindStore8 + // operationKindStore16 is the Kind for NewOperationStore16. + operationKindStore16 + // operationKindStore32 is the Kind for NewOperationStore32. + operationKindStore32 + // operationKindMemorySize is the Kind for NewOperationMemorySize. + operationKindMemorySize + // operationKindMemoryGrow is the Kind for NewOperationMemoryGrow. + operationKindMemoryGrow + // operationKindConstI32 is the Kind for NewOperationConstI32. + operationKindConstI32 + // operationKindConstI64 is the Kind for NewOperationConstI64. + operationKindConstI64 + // operationKindConstF32 is the Kind for NewOperationConstF32. + operationKindConstF32 + // operationKindConstF64 is the Kind for NewOperationConstF64. + operationKindConstF64 + // operationKindEq is the Kind for NewOperationEq. + operationKindEq + // operationKindNe is the Kind for NewOperationNe. + operationKindNe + // operationKindEqz is the Kind for NewOperationEqz. + operationKindEqz + // operationKindLt is the Kind for NewOperationLt. + operationKindLt + // operationKindGt is the Kind for NewOperationGt. + operationKindGt + // operationKindLe is the Kind for NewOperationLe. + operationKindLe + // operationKindGe is the Kind for NewOperationGe. + operationKindGe + // operationKindAdd is the Kind for NewOperationAdd. + operationKindAdd + // operationKindSub is the Kind for NewOperationSub. + operationKindSub + // operationKindMul is the Kind for NewOperationMul. + operationKindMul + // operationKindClz is the Kind for NewOperationClz. + operationKindClz + // operationKindCtz is the Kind for NewOperationCtz. + operationKindCtz + // operationKindPopcnt is the Kind for NewOperationPopcnt. + operationKindPopcnt + // operationKindDiv is the Kind for NewOperationDiv. + operationKindDiv + // operationKindRem is the Kind for NewOperationRem. + operationKindRem + // operationKindAnd is the Kind for NewOperationAnd. + operationKindAnd + // operationKindOr is the Kind for NewOperationOr. + operationKindOr + // operationKindXor is the Kind for NewOperationXor. + operationKindXor + // operationKindShl is the Kind for NewOperationShl. + operationKindShl + // operationKindShr is the Kind for NewOperationShr. + operationKindShr + // operationKindRotl is the Kind for NewOperationRotl. + operationKindRotl + // operationKindRotr is the Kind for NewOperationRotr. + operationKindRotr + // operationKindAbs is the Kind for NewOperationAbs. + operationKindAbs + // operationKindNeg is the Kind for NewOperationNeg. + operationKindNeg + // operationKindCeil is the Kind for NewOperationCeil. + operationKindCeil + // operationKindFloor is the Kind for NewOperationFloor. + operationKindFloor + // operationKindTrunc is the Kind for NewOperationTrunc. + operationKindTrunc + // operationKindNearest is the Kind for NewOperationNearest. + operationKindNearest + // operationKindSqrt is the Kind for NewOperationSqrt. + operationKindSqrt + // operationKindMin is the Kind for NewOperationMin. + operationKindMin + // operationKindMax is the Kind for NewOperationMax. + operationKindMax + // operationKindCopysign is the Kind for NewOperationCopysign. + operationKindCopysign + // operationKindI32WrapFromI64 is the Kind for NewOperationI32WrapFromI64. + operationKindI32WrapFromI64 + // operationKindITruncFromF is the Kind for NewOperationITruncFromF. + operationKindITruncFromF + // operationKindFConvertFromI is the Kind for NewOperationFConvertFromI. + operationKindFConvertFromI + // operationKindF32DemoteFromF64 is the Kind for NewOperationF32DemoteFromF64. + operationKindF32DemoteFromF64 + // operationKindF64PromoteFromF32 is the Kind for NewOperationF64PromoteFromF32. + operationKindF64PromoteFromF32 + // operationKindI32ReinterpretFromF32 is the Kind for NewOperationI32ReinterpretFromF32. + operationKindI32ReinterpretFromF32 + // operationKindI64ReinterpretFromF64 is the Kind for NewOperationI64ReinterpretFromF64. + operationKindI64ReinterpretFromF64 + // operationKindF32ReinterpretFromI32 is the Kind for NewOperationF32ReinterpretFromI32. + operationKindF32ReinterpretFromI32 + // operationKindF64ReinterpretFromI64 is the Kind for NewOperationF64ReinterpretFromI64. + operationKindF64ReinterpretFromI64 + // operationKindExtend is the Kind for NewOperationExtend. + operationKindExtend + // operationKindSignExtend32From8 is the Kind for NewOperationSignExtend32From8. + operationKindSignExtend32From8 + // operationKindSignExtend32From16 is the Kind for NewOperationSignExtend32From16. + operationKindSignExtend32From16 + // operationKindSignExtend64From8 is the Kind for NewOperationSignExtend64From8. + operationKindSignExtend64From8 + // operationKindSignExtend64From16 is the Kind for NewOperationSignExtend64From16. + operationKindSignExtend64From16 + // operationKindSignExtend64From32 is the Kind for NewOperationSignExtend64From32. + operationKindSignExtend64From32 + // operationKindMemoryInit is the Kind for NewOperationMemoryInit. + operationKindMemoryInit + // operationKindDataDrop is the Kind for NewOperationDataDrop. + operationKindDataDrop + // operationKindMemoryCopy is the Kind for NewOperationMemoryCopy. + operationKindMemoryCopy + // operationKindMemoryFill is the Kind for NewOperationMemoryFill. + operationKindMemoryFill + // operationKindTableInit is the Kind for NewOperationTableInit. + operationKindTableInit + // operationKindElemDrop is the Kind for NewOperationElemDrop. + operationKindElemDrop + // operationKindTableCopy is the Kind for NewOperationTableCopy. + operationKindTableCopy + // operationKindRefFunc is the Kind for NewOperationRefFunc. + operationKindRefFunc + // operationKindTableGet is the Kind for NewOperationTableGet. + operationKindTableGet + // operationKindTableSet is the Kind for NewOperationTableSet. + operationKindTableSet + // operationKindTableSize is the Kind for NewOperationTableSize. + operationKindTableSize + // operationKindTableGrow is the Kind for NewOperationTableGrow. + operationKindTableGrow + // operationKindTableFill is the Kind for NewOperationTableFill. + operationKindTableFill + + // Vector value related instructions are prefixed by V128. + + // operationKindV128Const is the Kind for NewOperationV128Const. + operationKindV128Const + // operationKindV128Add is the Kind for NewOperationV128Add. + operationKindV128Add + // operationKindV128Sub is the Kind for NewOperationV128Sub. + operationKindV128Sub + // operationKindV128Load is the Kind for NewOperationV128Load. + operationKindV128Load + // operationKindV128LoadLane is the Kind for NewOperationV128LoadLane. + operationKindV128LoadLane + // operationKindV128Store is the Kind for NewOperationV128Store. + operationKindV128Store + // operationKindV128StoreLane is the Kind for NewOperationV128StoreLane. + operationKindV128StoreLane + // operationKindV128ExtractLane is the Kind for NewOperationV128ExtractLane. + operationKindV128ExtractLane + // operationKindV128ReplaceLane is the Kind for NewOperationV128ReplaceLane. + operationKindV128ReplaceLane + // operationKindV128Splat is the Kind for NewOperationV128Splat. + operationKindV128Splat + // operationKindV128Shuffle is the Kind for NewOperationV128Shuffle. + operationKindV128Shuffle + // operationKindV128Swizzle is the Kind for NewOperationV128Swizzle. + operationKindV128Swizzle + // operationKindV128AnyTrue is the Kind for NewOperationV128AnyTrue. + operationKindV128AnyTrue + // operationKindV128AllTrue is the Kind for NewOperationV128AllTrue. + operationKindV128AllTrue + // operationKindV128BitMask is the Kind for NewOperationV128BitMask. + operationKindV128BitMask + // operationKindV128And is the Kind for NewOperationV128And. + operationKindV128And + // operationKindV128Not is the Kind for NewOperationV128Not. + operationKindV128Not + // operationKindV128Or is the Kind for NewOperationV128Or. + operationKindV128Or + // operationKindV128Xor is the Kind for NewOperationV128Xor. + operationKindV128Xor + // operationKindV128Bitselect is the Kind for NewOperationV128Bitselect. + operationKindV128Bitselect + // operationKindV128AndNot is the Kind for NewOperationV128AndNot. + operationKindV128AndNot + // operationKindV128Shl is the Kind for NewOperationV128Shl. + operationKindV128Shl + // operationKindV128Shr is the Kind for NewOperationV128Shr. + operationKindV128Shr + // operationKindV128Cmp is the Kind for NewOperationV128Cmp. + operationKindV128Cmp + // operationKindV128AddSat is the Kind for NewOperationV128AddSat. + operationKindV128AddSat + // operationKindV128SubSat is the Kind for NewOperationV128SubSat. + operationKindV128SubSat + // operationKindV128Mul is the Kind for NewOperationV128Mul. + operationKindV128Mul + // operationKindV128Div is the Kind for NewOperationV128Div. + operationKindV128Div + // operationKindV128Neg is the Kind for NewOperationV128Neg. + operationKindV128Neg + // operationKindV128Sqrt is the Kind for NewOperationV128Sqrt. + operationKindV128Sqrt + // operationKindV128Abs is the Kind for NewOperationV128Abs. + operationKindV128Abs + // operationKindV128Popcnt is the Kind for NewOperationV128Popcnt. + operationKindV128Popcnt + // operationKindV128Min is the Kind for NewOperationV128Min. + operationKindV128Min + // operationKindV128Max is the Kind for NewOperationV128Max. + operationKindV128Max + // operationKindV128AvgrU is the Kind for NewOperationV128AvgrU. + operationKindV128AvgrU + // operationKindV128Pmin is the Kind for NewOperationV128Pmin. + operationKindV128Pmin + // operationKindV128Pmax is the Kind for NewOperationV128Pmax. + operationKindV128Pmax + // operationKindV128Ceil is the Kind for NewOperationV128Ceil. + operationKindV128Ceil + // operationKindV128Floor is the Kind for NewOperationV128Floor. + operationKindV128Floor + // operationKindV128Trunc is the Kind for NewOperationV128Trunc. + operationKindV128Trunc + // operationKindV128Nearest is the Kind for NewOperationV128Nearest. + operationKindV128Nearest + // operationKindV128Extend is the Kind for NewOperationV128Extend. + operationKindV128Extend + // operationKindV128ExtMul is the Kind for NewOperationV128ExtMul. + operationKindV128ExtMul + // operationKindV128Q15mulrSatS is the Kind for NewOperationV128Q15mulrSatS. + operationKindV128Q15mulrSatS + // operationKindV128ExtAddPairwise is the Kind for NewOperationV128ExtAddPairwise. + operationKindV128ExtAddPairwise + // operationKindV128FloatPromote is the Kind for NewOperationV128FloatPromote. + operationKindV128FloatPromote + // operationKindV128FloatDemote is the Kind for NewOperationV128FloatDemote. + operationKindV128FloatDemote + // operationKindV128FConvertFromI is the Kind for NewOperationV128FConvertFromI. + operationKindV128FConvertFromI + // operationKindV128Dot is the Kind for NewOperationV128Dot. + operationKindV128Dot + // operationKindV128Narrow is the Kind for NewOperationV128Narrow. + operationKindV128Narrow + // operationKindV128ITruncSatFromF is the Kind for NewOperationV128ITruncSatFromF. + operationKindV128ITruncSatFromF + + // operationKindBuiltinFunctionCheckExitCode is the Kind for NewOperationBuiltinFunctionCheckExitCode. + operationKindBuiltinFunctionCheckExitCode + + // operationKindAtomicMemoryWait is the kind for NewOperationAtomicMemoryWait. + operationKindAtomicMemoryWait + // operationKindAtomicMemoryNotify is the kind for NewOperationAtomicMemoryNotify. + operationKindAtomicMemoryNotify + // operationKindAtomicFence is the kind for NewOperationAtomicFence. + operationKindAtomicFence + // operationKindAtomicLoad is the kind for NewOperationAtomicLoad. + operationKindAtomicLoad + // operationKindAtomicLoad8 is the kind for NewOperationAtomicLoad8. + operationKindAtomicLoad8 + // operationKindAtomicLoad16 is the kind for NewOperationAtomicLoad16. + operationKindAtomicLoad16 + // operationKindAtomicStore is the kind for NewOperationAtomicStore. + operationKindAtomicStore + // operationKindAtomicStore8 is the kind for NewOperationAtomicStore8. + operationKindAtomicStore8 + // operationKindAtomicStore16 is the kind for NewOperationAtomicStore16. + operationKindAtomicStore16 + + // operationKindAtomicRMW is the kind for NewOperationAtomicRMW. + operationKindAtomicRMW + // operationKindAtomicRMW8 is the kind for NewOperationAtomicRMW8. + operationKindAtomicRMW8 + // operationKindAtomicRMW16 is the kind for NewOperationAtomicRMW16. + operationKindAtomicRMW16 + + // operationKindAtomicRMWCmpxchg is the kind for NewOperationAtomicRMWCmpxchg. + operationKindAtomicRMWCmpxchg + // operationKindAtomicRMW8Cmpxchg is the kind for NewOperationAtomicRMW8Cmpxchg. + operationKindAtomicRMW8Cmpxchg + // operationKindAtomicRMW16Cmpxchg is the kind for NewOperationAtomicRMW16Cmpxchg. + operationKindAtomicRMW16Cmpxchg + + // operationKindEnd is always placed at the bottom of this iota definition to be used in the test. + operationKindEnd +) + +// NewOperationBuiltinFunctionCheckExitCode is a constructor for unionOperation with Kind operationKindBuiltinFunctionCheckExitCode. +// +// OperationBuiltinFunctionCheckExitCode corresponds to the instruction to check the api.Module is already closed due to +// context.DeadlineExceeded, context.Canceled, or the explicit call of CloseWithExitCode on api.Module. +func newOperationBuiltinFunctionCheckExitCode() unionOperation { + return unionOperation{Kind: operationKindBuiltinFunctionCheckExitCode} +} + +// label is the unique identifier for each block in a single function in interpreterir +// where "block" consists of multiple operations, and must End with branching operations +// (e.g. operationKindBr or operationKindBrIf). +type label uint64 + +// Kind returns the labelKind encoded in this label. +func (l label) Kind() labelKind { + return labelKind(uint32(l)) +} + +// FrameID returns the frame id encoded in this label. +func (l label) FrameID() int { + return int(uint32(l >> 32)) +} + +// NewLabel is a constructor for a label. +func newLabel(kind labelKind, frameID uint32) label { + return label(kind) | label(frameID)<<32 +} + +// String implements fmt.Stringer. +func (l label) String() (ret string) { + frameID := l.FrameID() + switch l.Kind() { + case labelKindHeader: + ret = fmt.Sprintf(".L%d", frameID) + case labelKindElse: + ret = fmt.Sprintf(".L%d_else", frameID) + case labelKindContinuation: + ret = fmt.Sprintf(".L%d_cont", frameID) + case labelKindReturn: + return ".return" + } + return +} + +func (l label) IsReturnTarget() bool { + return l.Kind() == labelKindReturn +} + +// labelKind is the Kind of the label. +type labelKind = byte + +const ( + // labelKindHeader is the header for various blocks. For example, the "then" block of + // wasm.OpcodeIfName in Wasm has the label of this Kind. + labelKindHeader labelKind = iota + // labelKindElse is the Kind of label for "else" block of wasm.OpcodeIfName in Wasm. + labelKindElse + // labelKindContinuation is the Kind of label which is the continuation of blocks. + // For example, for wasm text like + // (func + // .... + // (if (local.get 0) (then (nop)) (else (nop))) + // return + // ) + // we have the continuation block (of if-block) corresponding to "return" opcode. + labelKindContinuation + labelKindReturn + labelKindNum +) + +// unionOperation implements Operation and is the compilation (engine.lowerIR) result of a interpreterir.Operation. +// +// Not all operations result in a unionOperation, e.g. interpreterir.OperationI32ReinterpretFromF32, and some operations are +// more complex than others, e.g. interpreterir.NewOperationBrTable. +// +// Note: This is a form of union type as it can store fields needed for any operation. Hence, most fields are opaque and +// only relevant when in context of its kind. +type unionOperation struct { + // Kind determines how to interpret the other fields in this struct. + Kind operationKind + B1, B2 byte + B3 bool + U1, U2 uint64 + U3 uint64 + Us []uint64 +} + +// String implements fmt.Stringer. +func (o unionOperation) String() string { + switch o.Kind { + case operationKindUnreachable, + operationKindSelect, + operationKindMemorySize, + operationKindMemoryGrow, + operationKindI32WrapFromI64, + operationKindF32DemoteFromF64, + operationKindF64PromoteFromF32, + operationKindI32ReinterpretFromF32, + operationKindI64ReinterpretFromF64, + operationKindF32ReinterpretFromI32, + operationKindF64ReinterpretFromI64, + operationKindSignExtend32From8, + operationKindSignExtend32From16, + operationKindSignExtend64From8, + operationKindSignExtend64From16, + operationKindSignExtend64From32, + operationKindMemoryInit, + operationKindDataDrop, + operationKindMemoryCopy, + operationKindMemoryFill, + operationKindTableInit, + operationKindElemDrop, + operationKindTableCopy, + operationKindRefFunc, + operationKindTableGet, + operationKindTableSet, + operationKindTableSize, + operationKindTableGrow, + operationKindTableFill, + operationKindBuiltinFunctionCheckExitCode: + return o.Kind.String() + + case operationKindCall, + operationKindGlobalGet, + operationKindGlobalSet: + return fmt.Sprintf("%s %d", o.Kind, o.B1) + + case operationKindLabel: + return label(o.U1).String() + + case operationKindBr: + return fmt.Sprintf("%s %s", o.Kind, label(o.U1).String()) + + case operationKindBrIf: + thenTarget := label(o.U1) + elseTarget := label(o.U2) + return fmt.Sprintf("%s %s, %s", o.Kind, thenTarget, elseTarget) + + case operationKindBrTable: + var targets []string + var defaultLabel label + if len(o.Us) > 0 { + targets = make([]string, len(o.Us)-1) + for i, t := range o.Us[1:] { + targets[i] = label(t).String() + } + defaultLabel = label(o.Us[0]) + } + return fmt.Sprintf("%s [%s] %s", o.Kind, strings.Join(targets, ","), defaultLabel) + + case operationKindCallIndirect: + return fmt.Sprintf("%s: type=%d, table=%d", o.Kind, o.U1, o.U2) + + case operationKindDrop: + start := int64(o.U1) + end := int64(o.U2) + return fmt.Sprintf("%s %d..%d", o.Kind, start, end) + + case operationKindPick, operationKindSet: + return fmt.Sprintf("%s %d (is_vector=%v)", o.Kind, o.U1, o.B3) + + case operationKindLoad, operationKindStore: + return fmt.Sprintf("%s.%s (align=%d, offset=%d)", unsignedType(o.B1), o.Kind, o.U1, o.U2) + + case operationKindLoad8, + operationKindLoad16: + return fmt.Sprintf("%s.%s (align=%d, offset=%d)", signedType(o.B1), o.Kind, o.U1, o.U2) + + case operationKindStore8, + operationKindStore16, + operationKindStore32: + return fmt.Sprintf("%s (align=%d, offset=%d)", o.Kind, o.U1, o.U2) + + case operationKindLoad32: + var t string + if o.B1 == 1 { + t = "i64" + } else { + t = "u64" + } + return fmt.Sprintf("%s.%s (align=%d, offset=%d)", t, o.Kind, o.U1, o.U2) + + case operationKindEq, + operationKindNe, + operationKindAdd, + operationKindSub, + operationKindMul: + return fmt.Sprintf("%s.%s", unsignedType(o.B1), o.Kind) + + case operationKindEqz, + operationKindClz, + operationKindCtz, + operationKindPopcnt, + operationKindAnd, + operationKindOr, + operationKindXor, + operationKindShl, + operationKindRotl, + operationKindRotr: + return fmt.Sprintf("%s.%s", unsignedInt(o.B1), o.Kind) + + case operationKindRem, operationKindShr: + return fmt.Sprintf("%s.%s", signedInt(o.B1), o.Kind) + + case operationKindLt, + operationKindGt, + operationKindLe, + operationKindGe, + operationKindDiv: + return fmt.Sprintf("%s.%s", signedType(o.B1), o.Kind) + + case operationKindAbs, + operationKindNeg, + operationKindCeil, + operationKindFloor, + operationKindTrunc, + operationKindNearest, + operationKindSqrt, + operationKindMin, + operationKindMax, + operationKindCopysign: + return fmt.Sprintf("%s.%s", float(o.B1), o.Kind) + + case operationKindConstI32, + operationKindConstI64: + return fmt.Sprintf("%s %#x", o.Kind, o.U1) + + case operationKindConstF32: + return fmt.Sprintf("%s %f", o.Kind, math.Float32frombits(uint32(o.U1))) + case operationKindConstF64: + return fmt.Sprintf("%s %f", o.Kind, math.Float64frombits(o.U1)) + + case operationKindITruncFromF: + return fmt.Sprintf("%s.%s.%s (non_trapping=%v)", signedInt(o.B2), o.Kind, float(o.B1), o.B3) + case operationKindFConvertFromI: + return fmt.Sprintf("%s.%s.%s", float(o.B2), o.Kind, signedInt(o.B1)) + case operationKindExtend: + var in, out string + if o.B3 { + in = "i32" + out = "i64" + } else { + in = "u32" + out = "u64" + } + return fmt.Sprintf("%s.%s.%s", out, o.Kind, in) + + case operationKindV128Const: + return fmt.Sprintf("%s [%#x, %#x]", o.Kind, o.U1, o.U2) + case operationKindV128Add, + operationKindV128Sub: + return fmt.Sprintf("%s (shape=%s)", o.Kind, shapeName(o.B1)) + case operationKindV128Load, + operationKindV128LoadLane, + operationKindV128Store, + operationKindV128StoreLane, + operationKindV128ExtractLane, + operationKindV128ReplaceLane, + operationKindV128Splat, + operationKindV128Shuffle, + operationKindV128Swizzle, + operationKindV128AnyTrue, + operationKindV128AllTrue, + operationKindV128BitMask, + operationKindV128And, + operationKindV128Not, + operationKindV128Or, + operationKindV128Xor, + operationKindV128Bitselect, + operationKindV128AndNot, + operationKindV128Shl, + operationKindV128Shr, + operationKindV128Cmp, + operationKindV128AddSat, + operationKindV128SubSat, + operationKindV128Mul, + operationKindV128Div, + operationKindV128Neg, + operationKindV128Sqrt, + operationKindV128Abs, + operationKindV128Popcnt, + operationKindV128Min, + operationKindV128Max, + operationKindV128AvgrU, + operationKindV128Pmin, + operationKindV128Pmax, + operationKindV128Ceil, + operationKindV128Floor, + operationKindV128Trunc, + operationKindV128Nearest, + operationKindV128Extend, + operationKindV128ExtMul, + operationKindV128Q15mulrSatS, + operationKindV128ExtAddPairwise, + operationKindV128FloatPromote, + operationKindV128FloatDemote, + operationKindV128FConvertFromI, + operationKindV128Dot, + operationKindV128Narrow: + return o.Kind.String() + + case operationKindV128ITruncSatFromF: + if o.B3 { + return fmt.Sprintf("%s.%sS", o.Kind, shapeName(o.B1)) + } else { + return fmt.Sprintf("%s.%sU", o.Kind, shapeName(o.B1)) + } + + case operationKindAtomicMemoryWait, + operationKindAtomicMemoryNotify, + operationKindAtomicFence, + operationKindAtomicLoad, + operationKindAtomicLoad8, + operationKindAtomicLoad16, + operationKindAtomicStore, + operationKindAtomicStore8, + operationKindAtomicStore16, + operationKindAtomicRMW, + operationKindAtomicRMW8, + operationKindAtomicRMW16, + operationKindAtomicRMWCmpxchg, + operationKindAtomicRMW8Cmpxchg, + operationKindAtomicRMW16Cmpxchg: + return o.Kind.String() + + default: + panic(fmt.Sprintf("TODO: %v", o.Kind)) + } +} + +// NewOperationUnreachable is a constructor for unionOperation with operationKindUnreachable +// +// This corresponds to wasm.OpcodeUnreachable. +// +// The engines are expected to exit the execution with wasmruntime.ErrRuntimeUnreachable error. +func newOperationUnreachable() unionOperation { + return unionOperation{Kind: operationKindUnreachable} +} + +// NewOperationLabel is a constructor for unionOperation with operationKindLabel. +// +// This is used to inform the engines of the beginning of a label. +func newOperationLabel(label label) unionOperation { + return unionOperation{Kind: operationKindLabel, U1: uint64(label)} +} + +// NewOperationBr is a constructor for unionOperation with operationKindBr. +// +// The engines are expected to branch into U1 label. +func newOperationBr(target label) unionOperation { + return unionOperation{Kind: operationKindBr, U1: uint64(target)} +} + +// NewOperationBrIf is a constructor for unionOperation with operationKindBrIf. +// +// The engines are expected to pop a value and branch into U1 label if the value equals 1. +// Otherwise, the code branches into U2 label. +func newOperationBrIf(thenTarget, elseTarget label, thenDrop inclusiveRange) unionOperation { + return unionOperation{ + Kind: operationKindBrIf, + U1: uint64(thenTarget), + U2: uint64(elseTarget), + U3: thenDrop.AsU64(), + } +} + +// NewOperationBrTable is a constructor for unionOperation with operationKindBrTable. +// +// This corresponds to wasm.OpcodeBrTableName except that the label +// here means the interpreterir level, not the ones of Wasm. +// +// The engines are expected to do the br_table operation based on the default (Us[len(Us)-1], Us[len(Us)-2]) and +// targets (Us[:len(Us)-1], Rs[:len(Us)-1]). More precisely, this pops a value from the stack (called "index") +// and decides which branch we go into next based on the value. +// +// For example, assume we have operations like {default: L_DEFAULT, targets: [L0, L1, L2]}. +// If "index" >= len(defaults), then branch into the L_DEFAULT label. +// Otherwise, we enter label of targets[index]. +func newOperationBrTable(targetLabelsAndRanges []uint64) unionOperation { + return unionOperation{ + Kind: operationKindBrTable, + Us: targetLabelsAndRanges, + } +} + +// NewOperationCall is a constructor for unionOperation with operationKindCall. +// +// This corresponds to wasm.OpcodeCallName, and engines are expected to +// enter into a function whose index equals OperationCall.FunctionIndex. +func newOperationCall(functionIndex uint32) unionOperation { + return unionOperation{Kind: operationKindCall, U1: uint64(functionIndex)} +} + +// NewOperationCallIndirect implements Operation. +// +// This corresponds to wasm.OpcodeCallIndirectName, and engines are expected to +// consume the one value from the top of stack (called "offset"), +// and make a function call against the function whose function address equals +// Tables[OperationCallIndirect.TableIndex][offset]. +// +// Note: This is called indirect function call in the sense that the target function is indirectly +// determined by the current state (top value) of the stack. +// Therefore, two checks are performed at runtime before entering the target function: +// 1) whether "offset" exceeds the length of table Tables[OperationCallIndirect.TableIndex]. +// 2) whether the type of the function table[offset] matches the function type specified by OperationCallIndirect.TypeIndex. +func newOperationCallIndirect(typeIndex, tableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindCallIndirect, U1: uint64(typeIndex), U2: uint64(tableIndex)} +} + +// inclusiveRange is the range which spans across the value stack starting from the top to the bottom, and +// both boundary are included in the range. +type inclusiveRange struct { + Start, End int32 +} + +// AsU64 is be used to convert inclusiveRange to uint64 so that it can be stored in unionOperation. +func (i inclusiveRange) AsU64() uint64 { + return uint64(uint32(i.Start))<<32 | uint64(uint32(i.End)) +} + +// inclusiveRangeFromU64 retrieves inclusiveRange from the given uint64 which is stored in unionOperation. +func inclusiveRangeFromU64(v uint64) inclusiveRange { + return inclusiveRange{ + Start: int32(uint32(v >> 32)), + End: int32(uint32(v)), + } +} + +// nopinclusiveRange is inclusiveRange which corresponds to no-operation. +var nopinclusiveRange = inclusiveRange{Start: -1, End: -1} + +// NewOperationDrop is a constructor for unionOperation with operationKindDrop. +// +// The engines are expected to discard the values selected by NewOperationDrop.Depth which +// starts from the top of the stack to the bottom. +// +// depth spans across the uint64 value stack at runtime to be dropped by this operation. +func newOperationDrop(depth inclusiveRange) unionOperation { + return unionOperation{Kind: operationKindDrop, U1: depth.AsU64()} +} + +// NewOperationSelect is a constructor for unionOperation with operationKindSelect. +// +// This corresponds to wasm.OpcodeSelect. +// +// The engines are expected to pop three values, say [..., x2, x1, c], then if the value "c" equals zero, +// "x1" is pushed back onto the stack and, otherwise "x2" is pushed back. +// +// isTargetVector true if the selection target value's type is wasm.ValueTypeV128. +func newOperationSelect(isTargetVector bool) unionOperation { + return unionOperation{Kind: operationKindSelect, B3: isTargetVector} +} + +// NewOperationPick is a constructor for unionOperation with operationKindPick. +// +// The engines are expected to copy a value pointed by depth, and push the +// copied value onto the top of the stack. +// +// depth is the location of the pick target in the uint64 value stack at runtime. +// If isTargetVector=true, this points to the location of the lower 64-bits of the vector. +func newOperationPick(depth int, isTargetVector bool) unionOperation { + return unionOperation{Kind: operationKindPick, U1: uint64(depth), B3: isTargetVector} +} + +// NewOperationSet is a constructor for unionOperation with operationKindSet. +// +// The engines are expected to set the top value of the stack to the location specified by +// depth. +// +// depth is the location of the set target in the uint64 value stack at runtime. +// If isTargetVector=true, this points the location of the lower 64-bits of the vector. +func newOperationSet(depth int, isTargetVector bool) unionOperation { + return unionOperation{Kind: operationKindSet, U1: uint64(depth), B3: isTargetVector} +} + +// NewOperationGlobalGet is a constructor for unionOperation with operationKindGlobalGet. +// +// The engines are expected to read the global value specified by OperationGlobalGet.Index, +// and push the copy of the value onto the stack. +// +// See wasm.OpcodeGlobalGet. +func newOperationGlobalGet(index uint32) unionOperation { + return unionOperation{Kind: operationKindGlobalGet, U1: uint64(index)} +} + +// NewOperationGlobalSet is a constructor for unionOperation with operationKindGlobalSet. +// +// The engines are expected to consume the value from the top of the stack, +// and write the value into the global specified by OperationGlobalSet.Index. +// +// See wasm.OpcodeGlobalSet. +func newOperationGlobalSet(index uint32) unionOperation { + return unionOperation{Kind: operationKindGlobalSet, U1: uint64(index)} +} + +// memoryArg is the "memarg" to all memory instructions. +// +// See https://www.w3.org/TR/2019/REC-wasm-core-1-20191205/#memory-instructions%E2%91%A0 +type memoryArg struct { + // Alignment the expected alignment (expressed as the exponent of a power of 2). Default to the natural alignment. + // + // "Natural alignment" is defined here as the smallest power of two that can hold the size of the value type. Ex + // wasm.ValueTypeI64 is encoded in 8 little-endian bytes. 2^3 = 8, so the natural alignment is three. + Alignment uint32 + + // Offset is the address offset added to the instruction's dynamic address operand, yielding a 33-bit effective + // address that is the zero-based index at which the memory is accessed. Default to zero. + Offset uint32 +} + +// NewOperationLoad is a constructor for unionOperation with operationKindLoad. +// +// This corresponds to wasm.OpcodeI32LoadName wasm.OpcodeI64LoadName wasm.OpcodeF32LoadName and wasm.OpcodeF64LoadName. +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise load the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationLoad(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindLoad, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationLoad8 is a constructor for unionOperation with operationKindLoad8. +// +// This corresponds to wasm.OpcodeI32Load8SName wasm.OpcodeI32Load8UName wasm.OpcodeI64Load8SName wasm.OpcodeI64Load8UName. +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise load the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationLoad8(signedInt signedInt, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindLoad8, B1: byte(signedInt), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationLoad16 is a constructor for unionOperation with operationKindLoad16. +// +// This corresponds to wasm.OpcodeI32Load16SName wasm.OpcodeI32Load16UName wasm.OpcodeI64Load16SName wasm.OpcodeI64Load16UName. +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise load the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationLoad16(signedInt signedInt, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindLoad16, B1: byte(signedInt), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationLoad32 is a constructor for unionOperation with operationKindLoad32. +// +// This corresponds to wasm.OpcodeI64Load32SName wasm.OpcodeI64Load32UName. +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise load the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationLoad32(signed bool, arg memoryArg) unionOperation { + sigB := byte(0) + if signed { + sigB = 1 + } + return unionOperation{Kind: operationKindLoad32, B1: sigB, U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationStore is a constructor for unionOperation with operationKindStore. +// +// # This corresponds to wasm.OpcodeI32StoreName wasm.OpcodeI64StoreName wasm.OpcodeF32StoreName wasm.OpcodeF64StoreName +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise store the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationStore(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindStore, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationStore8 is a constructor for unionOperation with operationKindStore8. +// +// # This corresponds to wasm.OpcodeI32Store8Name wasm.OpcodeI64Store8Name +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise store the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationStore8(arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindStore8, U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationStore16 is a constructor for unionOperation with operationKindStore16. +// +// # This corresponds to wasm.OpcodeI32Store16Name wasm.OpcodeI64Store16Name +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise store the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationStore16(arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindStore16, U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationStore32 is a constructor for unionOperation with operationKindStore32. +// +// # This corresponds to wasm.OpcodeI64Store32Name +// +// The engines are expected to check the boundary of memory length, and exit the execution if this exceeds the boundary, +// otherwise store the corresponding value following the semantics of the corresponding WebAssembly instruction. +func newOperationStore32(arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindStore32, U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationMemorySize is a constructor for unionOperation with operationKindMemorySize. +// +// This corresponds to wasm.OpcodeMemorySize. +// +// The engines are expected to push the current page size of the memory onto the stack. +func newOperationMemorySize() unionOperation { + return unionOperation{Kind: operationKindMemorySize} +} + +// NewOperationMemoryGrow is a constructor for unionOperation with operationKindMemoryGrow. +// +// This corresponds to wasm.OpcodeMemoryGrow. +// +// The engines are expected to pop one value from the top of the stack, then +// execute wasm.MemoryInstance Grow with the value, and push the previous +// page size of the memory onto the stack. +func newOperationMemoryGrow() unionOperation { + return unionOperation{Kind: operationKindMemoryGrow} +} + +// NewOperationConstI32 is a constructor for unionOperation with OperationConstI32. +// +// This corresponds to wasm.OpcodeI32Const. +func newOperationConstI32(value uint32) unionOperation { + return unionOperation{Kind: operationKindConstI32, U1: uint64(value)} +} + +// NewOperationConstI64 is a constructor for unionOperation with OperationConstI64. +// +// This corresponds to wasm.OpcodeI64Const. +func newOperationConstI64(value uint64) unionOperation { + return unionOperation{Kind: operationKindConstI64, U1: value} +} + +// NewOperationConstF32 is a constructor for unionOperation with OperationConstF32. +// +// This corresponds to wasm.OpcodeF32Const. +func newOperationConstF32(value float32) unionOperation { + return unionOperation{Kind: operationKindConstF32, U1: uint64(math.Float32bits(value))} +} + +// NewOperationConstF64 is a constructor for unionOperation with OperationConstF64. +// +// This corresponds to wasm.OpcodeF64Const. +func newOperationConstF64(value float64) unionOperation { + return unionOperation{Kind: operationKindConstF64, U1: math.Float64bits(value)} +} + +// NewOperationEq is a constructor for unionOperation with operationKindEq. +// +// This corresponds to wasm.OpcodeI32EqName wasm.OpcodeI64EqName wasm.OpcodeF32EqName wasm.OpcodeF64EqName +func newOperationEq(b unsignedType) unionOperation { + return unionOperation{Kind: operationKindEq, B1: byte(b)} +} + +// NewOperationNe is a constructor for unionOperation with operationKindNe. +// +// This corresponds to wasm.OpcodeI32NeName wasm.OpcodeI64NeName wasm.OpcodeF32NeName wasm.OpcodeF64NeName +func newOperationNe(b unsignedType) unionOperation { + return unionOperation{Kind: operationKindNe, B1: byte(b)} +} + +// NewOperationEqz is a constructor for unionOperation with operationKindEqz. +// +// This corresponds to wasm.OpcodeI32EqzName wasm.OpcodeI64EqzName +func newOperationEqz(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindEqz, B1: byte(b)} +} + +// NewOperationLt is a constructor for unionOperation with operationKindLt. +// +// This corresponds to wasm.OpcodeI32LtS wasm.OpcodeI32LtU wasm.OpcodeI64LtS wasm.OpcodeI64LtU wasm.OpcodeF32Lt wasm.OpcodeF64Lt +func newOperationLt(b signedType) unionOperation { + return unionOperation{Kind: operationKindLt, B1: byte(b)} +} + +// NewOperationGt is a constructor for unionOperation with operationKindGt. +// +// This corresponds to wasm.OpcodeI32GtS wasm.OpcodeI32GtU wasm.OpcodeI64GtS wasm.OpcodeI64GtU wasm.OpcodeF32Gt wasm.OpcodeF64Gt +func newOperationGt(b signedType) unionOperation { + return unionOperation{Kind: operationKindGt, B1: byte(b)} +} + +// NewOperationLe is a constructor for unionOperation with operationKindLe. +// +// This corresponds to wasm.OpcodeI32LeS wasm.OpcodeI32LeU wasm.OpcodeI64LeS wasm.OpcodeI64LeU wasm.OpcodeF32Le wasm.OpcodeF64Le +func newOperationLe(b signedType) unionOperation { + return unionOperation{Kind: operationKindLe, B1: byte(b)} +} + +// NewOperationGe is a constructor for unionOperation with operationKindGe. +// +// This corresponds to wasm.OpcodeI32GeS wasm.OpcodeI32GeU wasm.OpcodeI64GeS wasm.OpcodeI64GeU wasm.OpcodeF32Ge wasm.OpcodeF64Ge +// NewOperationGe is the constructor for OperationGe +func newOperationGe(b signedType) unionOperation { + return unionOperation{Kind: operationKindGe, B1: byte(b)} +} + +// NewOperationAdd is a constructor for unionOperation with operationKindAdd. +// +// This corresponds to wasm.OpcodeI32AddName wasm.OpcodeI64AddName wasm.OpcodeF32AddName wasm.OpcodeF64AddName. +func newOperationAdd(b unsignedType) unionOperation { + return unionOperation{Kind: operationKindAdd, B1: byte(b)} +} + +// NewOperationSub is a constructor for unionOperation with operationKindSub. +// +// This corresponds to wasm.OpcodeI32SubName wasm.OpcodeI64SubName wasm.OpcodeF32SubName wasm.OpcodeF64SubName. +func newOperationSub(b unsignedType) unionOperation { + return unionOperation{Kind: operationKindSub, B1: byte(b)} +} + +// NewOperationMul is a constructor for unionOperation with wperationKindMul. +// +// This corresponds to wasm.OpcodeI32MulName wasm.OpcodeI64MulName wasm.OpcodeF32MulName wasm.OpcodeF64MulName. +// NewOperationMul is the constructor for OperationMul +func newOperationMul(b unsignedType) unionOperation { + return unionOperation{Kind: operationKindMul, B1: byte(b)} +} + +// NewOperationClz is a constructor for unionOperation with operationKindClz. +// +// This corresponds to wasm.OpcodeI32ClzName wasm.OpcodeI64ClzName. +// +// The engines are expected to count up the leading zeros in the +// current top of the stack, and push the count result. +// For example, stack of [..., 0x00_ff_ff_ff] results in [..., 8]. +// See wasm.OpcodeI32Clz wasm.OpcodeI64Clz +func newOperationClz(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindClz, B1: byte(b)} +} + +// NewOperationCtz is a constructor for unionOperation with operationKindCtz. +// +// This corresponds to wasm.OpcodeI32CtzName wasm.OpcodeI64CtzName. +// +// The engines are expected to count up the trailing zeros in the +// current top of the stack, and push the count result. +// For example, stack of [..., 0xff_ff_ff_00] results in [..., 8]. +func newOperationCtz(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindCtz, B1: byte(b)} +} + +// NewOperationPopcnt is a constructor for unionOperation with operationKindPopcnt. +// +// This corresponds to wasm.OpcodeI32PopcntName wasm.OpcodeI64PopcntName. +// +// The engines are expected to count up the number of set bits in the +// current top of the stack, and push the count result. +// For example, stack of [..., 0b00_00_00_11] results in [..., 2]. +func newOperationPopcnt(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindPopcnt, B1: byte(b)} +} + +// NewOperationDiv is a constructor for unionOperation with operationKindDiv. +// +// This corresponds to wasm.OpcodeI32DivS wasm.OpcodeI32DivU wasm.OpcodeI64DivS +// +// wasm.OpcodeI64DivU wasm.OpcodeF32Div wasm.OpcodeF64Div. +func newOperationDiv(b signedType) unionOperation { + return unionOperation{Kind: operationKindDiv, B1: byte(b)} +} + +// NewOperationRem is a constructor for unionOperation with operationKindRem. +// +// This corresponds to wasm.OpcodeI32RemS wasm.OpcodeI32RemU wasm.OpcodeI64RemS wasm.OpcodeI64RemU. +// +// The engines are expected to perform division on the top +// two values of integer type on the stack and puts the remainder of the result +// onto the stack. For example, stack [..., 10, 3] results in [..., 1] where +// the quotient is discarded. +// NewOperationRem is the constructor for OperationRem +func newOperationRem(b signedInt) unionOperation { + return unionOperation{Kind: operationKindRem, B1: byte(b)} +} + +// NewOperationAnd is a constructor for unionOperation with operationKindAnd. +// +// # This corresponds to wasm.OpcodeI32AndName wasm.OpcodeI64AndName +// +// The engines are expected to perform "And" operation on +// top two values on the stack, and pushes the result. +func newOperationAnd(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindAnd, B1: byte(b)} +} + +// NewOperationOr is a constructor for unionOperation with operationKindOr. +// +// # This corresponds to wasm.OpcodeI32OrName wasm.OpcodeI64OrName +// +// The engines are expected to perform "Or" operation on +// top two values on the stack, and pushes the result. +func newOperationOr(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindOr, B1: byte(b)} +} + +// NewOperationXor is a constructor for unionOperation with operationKindXor. +// +// # This corresponds to wasm.OpcodeI32XorName wasm.OpcodeI64XorName +// +// The engines are expected to perform "Xor" operation on +// top two values on the stack, and pushes the result. +func newOperationXor(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindXor, B1: byte(b)} +} + +// NewOperationShl is a constructor for unionOperation with operationKindShl. +// +// # This corresponds to wasm.OpcodeI32ShlName wasm.OpcodeI64ShlName +// +// The engines are expected to perform "Shl" operation on +// top two values on the stack, and pushes the result. +func newOperationShl(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindShl, B1: byte(b)} +} + +// NewOperationShr is a constructor for unionOperation with operationKindShr. +// +// # This corresponds to wasm.OpcodeI32ShrSName wasm.OpcodeI32ShrUName wasm.OpcodeI64ShrSName wasm.OpcodeI64ShrUName +// +// If OperationShr.Type is signed integer, then, the engines are expected to perform arithmetic right shift on the two +// top values on the stack, otherwise do the logical right shift. +func newOperationShr(b signedInt) unionOperation { + return unionOperation{Kind: operationKindShr, B1: byte(b)} +} + +// NewOperationRotl is a constructor for unionOperation with operationKindRotl. +// +// # This corresponds to wasm.OpcodeI32RotlName wasm.OpcodeI64RotlName +// +// The engines are expected to perform "Rotl" operation on +// top two values on the stack, and pushes the result. +func newOperationRotl(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindRotl, B1: byte(b)} +} + +// NewOperationRotr is a constructor for unionOperation with operationKindRotr. +// +// # This corresponds to wasm.OpcodeI32RotrName wasm.OpcodeI64RotrName +// +// The engines are expected to perform "Rotr" operation on +// top two values on the stack, and pushes the result. +func newOperationRotr(b unsignedInt) unionOperation { + return unionOperation{Kind: operationKindRotr, B1: byte(b)} +} + +// NewOperationAbs is a constructor for unionOperation with operationKindAbs. +// +// This corresponds to wasm.OpcodeF32Abs wasm.OpcodeF64Abs +func newOperationAbs(b float) unionOperation { + return unionOperation{Kind: operationKindAbs, B1: byte(b)} +} + +// NewOperationNeg is a constructor for unionOperation with operationKindNeg. +// +// This corresponds to wasm.OpcodeF32Neg wasm.OpcodeF64Neg +func newOperationNeg(b float) unionOperation { + return unionOperation{Kind: operationKindNeg, B1: byte(b)} +} + +// NewOperationCeil is a constructor for unionOperation with operationKindCeil. +// +// This corresponds to wasm.OpcodeF32CeilName wasm.OpcodeF64CeilName +func newOperationCeil(b float) unionOperation { + return unionOperation{Kind: operationKindCeil, B1: byte(b)} +} + +// NewOperationFloor is a constructor for unionOperation with operationKindFloor. +// +// This corresponds to wasm.OpcodeF32FloorName wasm.OpcodeF64FloorName +func newOperationFloor(b float) unionOperation { + return unionOperation{Kind: operationKindFloor, B1: byte(b)} +} + +// NewOperationTrunc is a constructor for unionOperation with operationKindTrunc. +// +// This corresponds to wasm.OpcodeF32TruncName wasm.OpcodeF64TruncName +func newOperationTrunc(b float) unionOperation { + return unionOperation{Kind: operationKindTrunc, B1: byte(b)} +} + +// NewOperationNearest is a constructor for unionOperation with operationKindNearest. +// +// # This corresponds to wasm.OpcodeF32NearestName wasm.OpcodeF64NearestName +// +// Note: this is *not* equivalent to math.Round and instead has the same +// the semantics of LLVM's rint intrinsic. See https://llvm.org/docs/LangRef.html#llvm-rint-intrinsic. +// For example, math.Round(-4.5) produces -5 while we want to produce -4. +func newOperationNearest(b float) unionOperation { + return unionOperation{Kind: operationKindNearest, B1: byte(b)} +} + +// NewOperationSqrt is a constructor for unionOperation with operationKindSqrt. +// +// This corresponds to wasm.OpcodeF32SqrtName wasm.OpcodeF64SqrtName +func newOperationSqrt(b float) unionOperation { + return unionOperation{Kind: operationKindSqrt, B1: byte(b)} +} + +// NewOperationMin is a constructor for unionOperation with operationKindMin. +// +// # This corresponds to wasm.OpcodeF32MinName wasm.OpcodeF64MinName +// +// The engines are expected to pop two values from the stack, and push back the maximum of +// these two values onto the stack. For example, stack [..., 100.1, 1.9] results in [..., 1.9]. +// +// Note: WebAssembly specifies that min/max must always return NaN if one of values is NaN, +// which is a different behavior different from math.Min. +func newOperationMin(b float) unionOperation { + return unionOperation{Kind: operationKindMin, B1: byte(b)} +} + +// NewOperationMax is a constructor for unionOperation with operationKindMax. +// +// # This corresponds to wasm.OpcodeF32MaxName wasm.OpcodeF64MaxName +// +// The engines are expected to pop two values from the stack, and push back the maximum of +// these two values onto the stack. For example, stack [..., 100.1, 1.9] results in [..., 100.1]. +// +// Note: WebAssembly specifies that min/max must always return NaN if one of values is NaN, +// which is a different behavior different from math.Max. +func newOperationMax(b float) unionOperation { + return unionOperation{Kind: operationKindMax, B1: byte(b)} +} + +// NewOperationCopysign is a constructor for unionOperation with operationKindCopysign. +// +// # This corresponds to wasm.OpcodeF32CopysignName wasm.OpcodeF64CopysignName +// +// The engines are expected to pop two float values from the stack, and copy the signbit of +// the first-popped value to the last one. +// For example, stack [..., 1.213, -5.0] results in [..., -1.213]. +func newOperationCopysign(b float) unionOperation { + return unionOperation{Kind: operationKindCopysign, B1: byte(b)} +} + +// NewOperationI32WrapFromI64 is a constructor for unionOperation with operationKindI32WrapFromI64. +// +// This corresponds to wasm.OpcodeI32WrapI64 and equivalent to uint64(uint32(v)) in Go. +// +// The engines are expected to replace the 64-bit int on top of the stack +// with the corresponding 32-bit integer. +func newOperationI32WrapFromI64() unionOperation { + return unionOperation{Kind: operationKindI32WrapFromI64} +} + +// NewOperationITruncFromF is a constructor for unionOperation with operationKindITruncFromF. +// +// This corresponds to +// +// wasm.OpcodeI32TruncF32SName wasm.OpcodeI32TruncF32UName wasm.OpcodeI32TruncF64SName +// wasm.OpcodeI32TruncF64UName wasm.OpcodeI64TruncF32SName wasm.OpcodeI64TruncF32UName wasm.OpcodeI64TruncF64SName +// wasm.OpcodeI64TruncF64UName. wasm.OpcodeI32TruncSatF32SName wasm.OpcodeI32TruncSatF32UName +// wasm.OpcodeI32TruncSatF64SName wasm.OpcodeI32TruncSatF64UName wasm.OpcodeI64TruncSatF32SName +// wasm.OpcodeI64TruncSatF32UName wasm.OpcodeI64TruncSatF64SName wasm.OpcodeI64TruncSatF64UName +// +// See [1] and [2] for when we encounter undefined behavior in the WebAssembly specification if NewOperationITruncFromF.NonTrapping == false. +// To summarize, if the source float value is NaN or doesn't fit in the destination range of integers (incl. +=Inf), +// then the runtime behavior is undefined. In wazero, the engines are expected to exit the execution in these undefined cases with +// wasmruntime.ErrRuntimeInvalidConversionToInteger error. +// +// [1] https://www.w3.org/TR/2019/REC-wasm-core-1-20191205/#-hrefop-trunc-umathrmtruncmathsfu_m-n-z for unsigned integers. +// [2] https://www.w3.org/TR/2019/REC-wasm-core-1-20191205/#-hrefop-trunc-smathrmtruncmathsfs_m-n-z for signed integers. +// +// nonTrapping true if this conversion is "nontrapping" in the sense of the +// https://github.com/WebAssembly/spec/blob/ce4b6c4d47eb06098cc7ab2e81f24748da822f20/proposals/nontrapping-float-to-int-conversion/Overview.md +func newOperationITruncFromF(inputType float, outputType signedInt, nonTrapping bool) unionOperation { + return unionOperation{ + Kind: operationKindITruncFromF, + B1: byte(inputType), + B2: byte(outputType), + B3: nonTrapping, + } +} + +// NewOperationFConvertFromI is a constructor for unionOperation with operationKindFConvertFromI. +// +// This corresponds to +// +// wasm.OpcodeF32ConvertI32SName wasm.OpcodeF32ConvertI32UName wasm.OpcodeF32ConvertI64SName wasm.OpcodeF32ConvertI64UName +// wasm.OpcodeF64ConvertI32SName wasm.OpcodeF64ConvertI32UName wasm.OpcodeF64ConvertI64SName wasm.OpcodeF64ConvertI64UName +// +// and equivalent to float32(uint32(x)), float32(int32(x)), etc in Go. +func newOperationFConvertFromI(inputType signedInt, outputType float) unionOperation { + return unionOperation{ + Kind: operationKindFConvertFromI, + B1: byte(inputType), + B2: byte(outputType), + } +} + +// NewOperationF32DemoteFromF64 is a constructor for unionOperation with operationKindF32DemoteFromF64. +// +// This corresponds to wasm.OpcodeF32DemoteF64 and is equivalent float32(float64(v)). +func newOperationF32DemoteFromF64() unionOperation { + return unionOperation{Kind: operationKindF32DemoteFromF64} +} + +// NewOperationF64PromoteFromF32 is a constructor for unionOperation with operationKindF64PromoteFromF32. +// +// This corresponds to wasm.OpcodeF64PromoteF32 and is equivalent float64(float32(v)). +func newOperationF64PromoteFromF32() unionOperation { + return unionOperation{Kind: operationKindF64PromoteFromF32} +} + +// NewOperationI32ReinterpretFromF32 is a constructor for unionOperation with operationKindI32ReinterpretFromF32. +// +// This corresponds to wasm.OpcodeI32ReinterpretF32Name. +func newOperationI32ReinterpretFromF32() unionOperation { + return unionOperation{Kind: operationKindI32ReinterpretFromF32} +} + +// NewOperationI64ReinterpretFromF64 is a constructor for unionOperation with operationKindI64ReinterpretFromF64. +// +// This corresponds to wasm.OpcodeI64ReinterpretF64Name. +func newOperationI64ReinterpretFromF64() unionOperation { + return unionOperation{Kind: operationKindI64ReinterpretFromF64} +} + +// NewOperationF32ReinterpretFromI32 is a constructor for unionOperation with operationKindF32ReinterpretFromI32. +// +// This corresponds to wasm.OpcodeF32ReinterpretI32Name. +func newOperationF32ReinterpretFromI32() unionOperation { + return unionOperation{Kind: operationKindF32ReinterpretFromI32} +} + +// NewOperationF64ReinterpretFromI64 is a constructor for unionOperation with operationKindF64ReinterpretFromI64. +// +// This corresponds to wasm.OpcodeF64ReinterpretI64Name. +func newOperationF64ReinterpretFromI64() unionOperation { + return unionOperation{Kind: operationKindF64ReinterpretFromI64} +} + +// NewOperationExtend is a constructor for unionOperation with operationKindExtend. +// +// # This corresponds to wasm.OpcodeI64ExtendI32SName wasm.OpcodeI64ExtendI32UName +// +// The engines are expected to extend the 32-bit signed or unsigned int on top of the stack +// as a 64-bit integer of corresponding signedness. For unsigned case, this is just reinterpreting the +// underlying bit pattern as 64-bit integer. For signed case, this is sign-extension which preserves the +// original integer's sign. +func newOperationExtend(signed bool) unionOperation { + op := unionOperation{Kind: operationKindExtend} + if signed { + op.B1 = 1 + } + return op +} + +// NewOperationSignExtend32From8 is a constructor for unionOperation with operationKindSignExtend32From8. +// +// This corresponds to wasm.OpcodeI32Extend8SName. +// +// The engines are expected to sign-extend the first 8-bits of 32-bit in as signed 32-bit int. +func newOperationSignExtend32From8() unionOperation { + return unionOperation{Kind: operationKindSignExtend32From8} +} + +// NewOperationSignExtend32From16 is a constructor for unionOperation with operationKindSignExtend32From16. +// +// This corresponds to wasm.OpcodeI32Extend16SName. +// +// The engines are expected to sign-extend the first 16-bits of 32-bit in as signed 32-bit int. +func newOperationSignExtend32From16() unionOperation { + return unionOperation{Kind: operationKindSignExtend32From16} +} + +// NewOperationSignExtend64From8 is a constructor for unionOperation with operationKindSignExtend64From8. +// +// This corresponds to wasm.OpcodeI64Extend8SName. +// +// The engines are expected to sign-extend the first 8-bits of 64-bit in as signed 32-bit int. +func newOperationSignExtend64From8() unionOperation { + return unionOperation{Kind: operationKindSignExtend64From8} +} + +// NewOperationSignExtend64From16 is a constructor for unionOperation with operationKindSignExtend64From16. +// +// This corresponds to wasm.OpcodeI64Extend16SName. +// +// The engines are expected to sign-extend the first 16-bits of 64-bit in as signed 32-bit int. +func newOperationSignExtend64From16() unionOperation { + return unionOperation{Kind: operationKindSignExtend64From16} +} + +// NewOperationSignExtend64From32 is a constructor for unionOperation with operationKindSignExtend64From32. +// +// This corresponds to wasm.OpcodeI64Extend32SName. +// +// The engines are expected to sign-extend the first 32-bits of 64-bit in as signed 32-bit int. +func newOperationSignExtend64From32() unionOperation { + return unionOperation{Kind: operationKindSignExtend64From32} +} + +// NewOperationMemoryInit is a constructor for unionOperation with operationKindMemoryInit. +// +// This corresponds to wasm.OpcodeMemoryInitName. +// +// dataIndex is the index of the data instance in ModuleInstance.DataInstances +// by which this operation instantiates a part of the memory. +func newOperationMemoryInit(dataIndex uint32) unionOperation { + return unionOperation{Kind: operationKindMemoryInit, U1: uint64(dataIndex)} +} + +// NewOperationDataDrop implements Operation. +// +// This corresponds to wasm.OpcodeDataDropName. +// +// dataIndex is the index of the data instance in ModuleInstance.DataInstances +// which this operation drops. +func newOperationDataDrop(dataIndex uint32) unionOperation { + return unionOperation{Kind: operationKindDataDrop, U1: uint64(dataIndex)} +} + +// NewOperationMemoryCopy is a consuctor for unionOperation with operationKindMemoryCopy. +// +// This corresponds to wasm.OpcodeMemoryCopyName. +func newOperationMemoryCopy() unionOperation { + return unionOperation{Kind: operationKindMemoryCopy} +} + +// NewOperationMemoryFill is a consuctor for unionOperation with operationKindMemoryFill. +func newOperationMemoryFill() unionOperation { + return unionOperation{Kind: operationKindMemoryFill} +} + +// NewOperationTableInit is a constructor for unionOperation with operationKindTableInit. +// +// This corresponds to wasm.OpcodeTableInitName. +// +// elemIndex is the index of the element by which this operation initializes a part of the table. +// tableIndex is the index of the table on which this operation initialize by the target element. +func newOperationTableInit(elemIndex, tableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindTableInit, U1: uint64(elemIndex), U2: uint64(tableIndex)} +} + +// NewOperationElemDrop is a constructor for unionOperation with operationKindElemDrop. +// +// This corresponds to wasm.OpcodeElemDropName. +// +// elemIndex is the index of the element which this operation drops. +func newOperationElemDrop(elemIndex uint32) unionOperation { + return unionOperation{Kind: operationKindElemDrop, U1: uint64(elemIndex)} +} + +// NewOperationTableCopy implements Operation. +// +// This corresponds to wasm.OpcodeTableCopyName. +func newOperationTableCopy(srcTableIndex, dstTableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindTableCopy, U1: uint64(srcTableIndex), U2: uint64(dstTableIndex)} +} + +// NewOperationRefFunc constructor for unionOperation with operationKindRefFunc. +// +// This corresponds to wasm.OpcodeRefFuncName, and engines are expected to +// push the opaque pointer value of engine specific func for the given FunctionIndex. +// +// Note: in wazero, we express any reference types (funcref or externref) as opaque pointers which is uint64. +// Therefore, the engine implementations emit instructions to push the address of *function onto the stack. +func newOperationRefFunc(functionIndex uint32) unionOperation { + return unionOperation{Kind: operationKindRefFunc, U1: uint64(functionIndex)} +} + +// NewOperationTableGet constructor for unionOperation with operationKindTableGet. +// +// This corresponds to wasm.OpcodeTableGetName. +func newOperationTableGet(tableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindTableGet, U1: uint64(tableIndex)} +} + +// NewOperationTableSet constructor for unionOperation with operationKindTableSet. +// +// This corresponds to wasm.OpcodeTableSetName. +func newOperationTableSet(tableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindTableSet, U1: uint64(tableIndex)} +} + +// NewOperationTableSize constructor for unionOperation with operationKindTableSize. +// +// This corresponds to wasm.OpcodeTableSizeName. +func newOperationTableSize(tableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindTableSize, U1: uint64(tableIndex)} +} + +// NewOperationTableGrow constructor for unionOperation with operationKindTableGrow. +// +// This corresponds to wasm.OpcodeTableGrowName. +func newOperationTableGrow(tableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindTableGrow, U1: uint64(tableIndex)} +} + +// NewOperationTableFill constructor for unionOperation with operationKindTableFill. +// +// This corresponds to wasm.OpcodeTableFillName. +func newOperationTableFill(tableIndex uint32) unionOperation { + return unionOperation{Kind: operationKindTableFill, U1: uint64(tableIndex)} +} + +// NewOperationV128Const constructor for unionOperation with operationKindV128Const +func newOperationV128Const(lo, hi uint64) unionOperation { + return unionOperation{Kind: operationKindV128Const, U1: lo, U2: hi} +} + +// shape corresponds to a shape of v128 values. +// https://webassembly.github.io/spec/core/syntax/instructions.html#syntax-shape +type shape = byte + +const ( + shapeI8x16 shape = iota + shapeI16x8 + shapeI32x4 + shapeI64x2 + shapeF32x4 + shapeF64x2 +) + +func shapeName(s shape) (ret string) { + switch s { + case shapeI8x16: + ret = "I8x16" + case shapeI16x8: + ret = "I16x8" + case shapeI32x4: + ret = "I32x4" + case shapeI64x2: + ret = "I64x2" + case shapeF32x4: + ret = "F32x4" + case shapeF64x2: + ret = "F64x2" + } + return +} + +// NewOperationV128Add constructor for unionOperation with operationKindV128Add. +// +// This corresponds to wasm.OpcodeVecI8x16AddName wasm.OpcodeVecI16x8AddName wasm.OpcodeVecI32x4AddName +// +// wasm.OpcodeVecI64x2AddName wasm.OpcodeVecF32x4AddName wasm.OpcodeVecF64x2AddName +func newOperationV128Add(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Add, B1: shape} +} + +// NewOperationV128Sub constructor for unionOperation with operationKindV128Sub. +// +// This corresponds to wasm.OpcodeVecI8x16SubName wasm.OpcodeVecI16x8SubName wasm.OpcodeVecI32x4SubName +// +// wasm.OpcodeVecI64x2SubName wasm.OpcodeVecF32x4SubName wasm.OpcodeVecF64x2SubName +func newOperationV128Sub(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Sub, B1: shape} +} + +// v128LoadType represents a type of wasm.OpcodeVecV128Load* instructions. +type v128LoadType = byte + +const ( + // v128LoadType128 corresponds to wasm.OpcodeVecV128LoadName. + v128LoadType128 v128LoadType = iota + // v128LoadType8x8s corresponds to wasm.OpcodeVecV128Load8x8SName. + v128LoadType8x8s + // v128LoadType8x8u corresponds to wasm.OpcodeVecV128Load8x8UName. + v128LoadType8x8u + // v128LoadType16x4s corresponds to wasm.OpcodeVecV128Load16x4SName + v128LoadType16x4s + // v128LoadType16x4u corresponds to wasm.OpcodeVecV128Load16x4UName + v128LoadType16x4u + // v128LoadType32x2s corresponds to wasm.OpcodeVecV128Load32x2SName + v128LoadType32x2s + // v128LoadType32x2u corresponds to wasm.OpcodeVecV128Load32x2UName + v128LoadType32x2u + // v128LoadType8Splat corresponds to wasm.OpcodeVecV128Load8SplatName + v128LoadType8Splat + // v128LoadType16Splat corresponds to wasm.OpcodeVecV128Load16SplatName + v128LoadType16Splat + // v128LoadType32Splat corresponds to wasm.OpcodeVecV128Load32SplatName + v128LoadType32Splat + // v128LoadType64Splat corresponds to wasm.OpcodeVecV128Load64SplatName + v128LoadType64Splat + // v128LoadType32zero corresponds to wasm.OpcodeVecV128Load32zeroName + v128LoadType32zero + // v128LoadType64zero corresponds to wasm.OpcodeVecV128Load64zeroName + v128LoadType64zero +) + +// NewOperationV128Load is a constructor for unionOperation with operationKindV128Load. +// +// This corresponds to +// +// wasm.OpcodeVecV128LoadName wasm.OpcodeVecV128Load8x8SName wasm.OpcodeVecV128Load8x8UName +// wasm.OpcodeVecV128Load16x4SName wasm.OpcodeVecV128Load16x4UName wasm.OpcodeVecV128Load32x2SName +// wasm.OpcodeVecV128Load32x2UName wasm.OpcodeVecV128Load8SplatName wasm.OpcodeVecV128Load16SplatName +// wasm.OpcodeVecV128Load32SplatName wasm.OpcodeVecV128Load64SplatName wasm.OpcodeVecV128Load32zeroName +// wasm.OpcodeVecV128Load64zeroName +func newOperationV128Load(loadType v128LoadType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindV128Load, B1: loadType, U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationV128LoadLane is a constructor for unionOperation with operationKindV128LoadLane. +// +// This corresponds to wasm.OpcodeVecV128Load8LaneName wasm.OpcodeVecV128Load16LaneName +// +// wasm.OpcodeVecV128Load32LaneName wasm.OpcodeVecV128Load64LaneName. +// +// laneIndex is >=0 && <(128/LaneSize). +// laneSize is either 8, 16, 32, or 64. +func newOperationV128LoadLane(laneIndex, laneSize byte, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindV128LoadLane, B1: laneSize, B2: laneIndex, U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationV128Store is a constructor for unionOperation with operationKindV128Store. +// +// This corresponds to wasm.OpcodeVecV128Load8LaneName wasm.OpcodeVecV128Load16LaneName +// +// wasm.OpcodeVecV128Load32LaneName wasm.OpcodeVecV128Load64LaneName. +func newOperationV128Store(arg memoryArg) unionOperation { + return unionOperation{ + Kind: operationKindV128Store, + U1: uint64(arg.Alignment), + U2: uint64(arg.Offset), + } +} + +// NewOperationV128StoreLane implements Operation. +// +// This corresponds to wasm.OpcodeVecV128Load8LaneName wasm.OpcodeVecV128Load16LaneName +// +// wasm.OpcodeVecV128Load32LaneName wasm.OpcodeVecV128Load64LaneName. +// +// laneIndex is >=0 && <(128/LaneSize). +// laneSize is either 8, 16, 32, or 64. +func newOperationV128StoreLane(laneIndex byte, laneSize byte, arg memoryArg) unionOperation { + return unionOperation{ + Kind: operationKindV128StoreLane, + B1: laneSize, + B2: laneIndex, + U1: uint64(arg.Alignment), + U2: uint64(arg.Offset), + } +} + +// NewOperationV128ExtractLane is a constructor for unionOperation with operationKindV128ExtractLane. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16ExtractLaneSName wasm.OpcodeVecI8x16ExtractLaneUName +// wasm.OpcodeVecI16x8ExtractLaneSName wasm.OpcodeVecI16x8ExtractLaneUName +// wasm.OpcodeVecI32x4ExtractLaneName wasm.OpcodeVecI64x2ExtractLaneName +// wasm.OpcodeVecF32x4ExtractLaneName wasm.OpcodeVecF64x2ExtractLaneName. +// +// laneIndex is >=0 && <M where shape = NxM. +// signed is used when shape is either i8x16 or i16x2 to specify whether to sign-extend or not. +func newOperationV128ExtractLane(laneIndex byte, signed bool, shape shape) unionOperation { + return unionOperation{ + Kind: operationKindV128ExtractLane, + B1: shape, + B2: laneIndex, + B3: signed, + } +} + +// NewOperationV128ReplaceLane is a constructor for unionOperation with operationKindV128ReplaceLane. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16ReplaceLaneName wasm.OpcodeVecI16x8ReplaceLaneName +// wasm.OpcodeVecI32x4ReplaceLaneName wasm.OpcodeVecI64x2ReplaceLaneName +// wasm.OpcodeVecF32x4ReplaceLaneName wasm.OpcodeVecF64x2ReplaceLaneName. +// +// laneIndex is >=0 && <M where shape = NxM. +func newOperationV128ReplaceLane(laneIndex byte, shape shape) unionOperation { + return unionOperation{Kind: operationKindV128ReplaceLane, B1: shape, B2: laneIndex} +} + +// NewOperationV128Splat is a constructor for unionOperation with operationKindV128Splat. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16SplatName wasm.OpcodeVecI16x8SplatName +// wasm.OpcodeVecI32x4SplatName wasm.OpcodeVecI64x2SplatName +// wasm.OpcodeVecF32x4SplatName wasm.OpcodeVecF64x2SplatName. +func newOperationV128Splat(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Splat, B1: shape} +} + +// NewOperationV128Shuffle is a constructor for unionOperation with operationKindV128Shuffle. +func newOperationV128Shuffle(lanes []uint64) unionOperation { + return unionOperation{Kind: operationKindV128Shuffle, Us: lanes} +} + +// NewOperationV128Swizzle is a constructor for unionOperation with operationKindV128Swizzle. +// +// This corresponds to wasm.OpcodeVecI8x16SwizzleName. +func newOperationV128Swizzle() unionOperation { + return unionOperation{Kind: operationKindV128Swizzle} +} + +// NewOperationV128AnyTrue is a constructor for unionOperation with operationKindV128AnyTrue. +// +// This corresponds to wasm.OpcodeVecV128AnyTrueName. +func newOperationV128AnyTrue() unionOperation { + return unionOperation{Kind: operationKindV128AnyTrue} +} + +// NewOperationV128AllTrue is a constructor for unionOperation with operationKindV128AllTrue. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16AllTrueName wasm.OpcodeVecI16x8AllTrueName +// wasm.OpcodeVecI32x4AllTrueName wasm.OpcodeVecI64x2AllTrueName. +func newOperationV128AllTrue(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128AllTrue, B1: shape} +} + +// NewOperationV128BitMask is a constructor for unionOperation with operationKindV128BitMask. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16BitMaskName wasm.OpcodeVecI16x8BitMaskName +// wasm.OpcodeVecI32x4BitMaskName wasm.OpcodeVecI64x2BitMaskName. +func newOperationV128BitMask(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128BitMask, B1: shape} +} + +// NewOperationV128And is a constructor for unionOperation with operationKindV128And. +// +// This corresponds to wasm.OpcodeVecV128And. +func newOperationV128And() unionOperation { + return unionOperation{Kind: operationKindV128And} +} + +// NewOperationV128Not is a constructor for unionOperation with operationKindV128Not. +// +// This corresponds to wasm.OpcodeVecV128Not. +func newOperationV128Not() unionOperation { + return unionOperation{Kind: operationKindV128Not} +} + +// NewOperationV128Or is a constructor for unionOperation with operationKindV128Or. +// +// This corresponds to wasm.OpcodeVecV128Or. +func newOperationV128Or() unionOperation { + return unionOperation{Kind: operationKindV128Or} +} + +// NewOperationV128Xor is a constructor for unionOperation with operationKindV128Xor. +// +// This corresponds to wasm.OpcodeVecV128Xor. +func newOperationV128Xor() unionOperation { + return unionOperation{Kind: operationKindV128Xor} +} + +// NewOperationV128Bitselect is a constructor for unionOperation with operationKindV128Bitselect. +// +// This corresponds to wasm.OpcodeVecV128Bitselect. +func newOperationV128Bitselect() unionOperation { + return unionOperation{Kind: operationKindV128Bitselect} +} + +// NewOperationV128AndNot is a constructor for unionOperation with operationKindV128AndNot. +// +// This corresponds to wasm.OpcodeVecV128AndNot. +func newOperationV128AndNot() unionOperation { + return unionOperation{Kind: operationKindV128AndNot} +} + +// NewOperationV128Shl is a constructor for unionOperation with operationKindV128Shl. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16ShlName wasm.OpcodeVecI16x8ShlName +// wasm.OpcodeVecI32x4ShlName wasm.OpcodeVecI64x2ShlName +func newOperationV128Shl(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Shl, B1: shape} +} + +// NewOperationV128Shr is a constructor for unionOperation with operationKindV128Shr. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16ShrSName wasm.OpcodeVecI8x16ShrUName wasm.OpcodeVecI16x8ShrSName +// wasm.OpcodeVecI16x8ShrUName wasm.OpcodeVecI32x4ShrSName wasm.OpcodeVecI32x4ShrUName. +// wasm.OpcodeVecI64x2ShrSName wasm.OpcodeVecI64x2ShrUName. +func newOperationV128Shr(shape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128Shr, B1: shape, B3: signed} +} + +// NewOperationV128Cmp is a constructor for unionOperation with operationKindV128Cmp. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16EqName, wasm.OpcodeVecI8x16NeName, wasm.OpcodeVecI8x16LtSName, wasm.OpcodeVecI8x16LtUName, wasm.OpcodeVecI8x16GtSName, +// wasm.OpcodeVecI8x16GtUName, wasm.OpcodeVecI8x16LeSName, wasm.OpcodeVecI8x16LeUName, wasm.OpcodeVecI8x16GeSName, wasm.OpcodeVecI8x16GeUName, +// wasm.OpcodeVecI16x8EqName, wasm.OpcodeVecI16x8NeName, wasm.OpcodeVecI16x8LtSName, wasm.OpcodeVecI16x8LtUName, wasm.OpcodeVecI16x8GtSName, +// wasm.OpcodeVecI16x8GtUName, wasm.OpcodeVecI16x8LeSName, wasm.OpcodeVecI16x8LeUName, wasm.OpcodeVecI16x8GeSName, wasm.OpcodeVecI16x8GeUName, +// wasm.OpcodeVecI32x4EqName, wasm.OpcodeVecI32x4NeName, wasm.OpcodeVecI32x4LtSName, wasm.OpcodeVecI32x4LtUName, wasm.OpcodeVecI32x4GtSName, +// wasm.OpcodeVecI32x4GtUName, wasm.OpcodeVecI32x4LeSName, wasm.OpcodeVecI32x4LeUName, wasm.OpcodeVecI32x4GeSName, wasm.OpcodeVecI32x4GeUName, +// wasm.OpcodeVecI64x2EqName, wasm.OpcodeVecI64x2NeName, wasm.OpcodeVecI64x2LtSName, wasm.OpcodeVecI64x2GtSName, wasm.OpcodeVecI64x2LeSName, +// wasm.OpcodeVecI64x2GeSName, wasm.OpcodeVecF32x4EqName, wasm.OpcodeVecF32x4NeName, wasm.OpcodeVecF32x4LtName, wasm.OpcodeVecF32x4GtName, +// wasm.OpcodeVecF32x4LeName, wasm.OpcodeVecF32x4GeName, wasm.OpcodeVecF64x2EqName, wasm.OpcodeVecF64x2NeName, wasm.OpcodeVecF64x2LtName, +// wasm.OpcodeVecF64x2GtName, wasm.OpcodeVecF64x2LeName, wasm.OpcodeVecF64x2GeName +func newOperationV128Cmp(cmpType v128CmpType) unionOperation { + return unionOperation{Kind: operationKindV128Cmp, B1: cmpType} +} + +// v128CmpType represents a type of vector comparison operation. +type v128CmpType = byte + +const ( + // v128CmpTypeI8x16Eq corresponds to wasm.OpcodeVecI8x16EqName. + v128CmpTypeI8x16Eq v128CmpType = iota + // v128CmpTypeI8x16Ne corresponds to wasm.OpcodeVecI8x16NeName. + v128CmpTypeI8x16Ne + // v128CmpTypeI8x16LtS corresponds to wasm.OpcodeVecI8x16LtSName. + v128CmpTypeI8x16LtS + // v128CmpTypeI8x16LtU corresponds to wasm.OpcodeVecI8x16LtUName. + v128CmpTypeI8x16LtU + // v128CmpTypeI8x16GtS corresponds to wasm.OpcodeVecI8x16GtSName. + v128CmpTypeI8x16GtS + // v128CmpTypeI8x16GtU corresponds to wasm.OpcodeVecI8x16GtUName. + v128CmpTypeI8x16GtU + // v128CmpTypeI8x16LeS corresponds to wasm.OpcodeVecI8x16LeSName. + v128CmpTypeI8x16LeS + // v128CmpTypeI8x16LeU corresponds to wasm.OpcodeVecI8x16LeUName. + v128CmpTypeI8x16LeU + // v128CmpTypeI8x16GeS corresponds to wasm.OpcodeVecI8x16GeSName. + v128CmpTypeI8x16GeS + // v128CmpTypeI8x16GeU corresponds to wasm.OpcodeVecI8x16GeUName. + v128CmpTypeI8x16GeU + // v128CmpTypeI16x8Eq corresponds to wasm.OpcodeVecI16x8EqName. + v128CmpTypeI16x8Eq + // v128CmpTypeI16x8Ne corresponds to wasm.OpcodeVecI16x8NeName. + v128CmpTypeI16x8Ne + // v128CmpTypeI16x8LtS corresponds to wasm.OpcodeVecI16x8LtSName. + v128CmpTypeI16x8LtS + // v128CmpTypeI16x8LtU corresponds to wasm.OpcodeVecI16x8LtUName. + v128CmpTypeI16x8LtU + // v128CmpTypeI16x8GtS corresponds to wasm.OpcodeVecI16x8GtSName. + v128CmpTypeI16x8GtS + // v128CmpTypeI16x8GtU corresponds to wasm.OpcodeVecI16x8GtUName. + v128CmpTypeI16x8GtU + // v128CmpTypeI16x8LeS corresponds to wasm.OpcodeVecI16x8LeSName. + v128CmpTypeI16x8LeS + // v128CmpTypeI16x8LeU corresponds to wasm.OpcodeVecI16x8LeUName. + v128CmpTypeI16x8LeU + // v128CmpTypeI16x8GeS corresponds to wasm.OpcodeVecI16x8GeSName. + v128CmpTypeI16x8GeS + // v128CmpTypeI16x8GeU corresponds to wasm.OpcodeVecI16x8GeUName. + v128CmpTypeI16x8GeU + // v128CmpTypeI32x4Eq corresponds to wasm.OpcodeVecI32x4EqName. + v128CmpTypeI32x4Eq + // v128CmpTypeI32x4Ne corresponds to wasm.OpcodeVecI32x4NeName. + v128CmpTypeI32x4Ne + // v128CmpTypeI32x4LtS corresponds to wasm.OpcodeVecI32x4LtSName. + v128CmpTypeI32x4LtS + // v128CmpTypeI32x4LtU corresponds to wasm.OpcodeVecI32x4LtUName. + v128CmpTypeI32x4LtU + // v128CmpTypeI32x4GtS corresponds to wasm.OpcodeVecI32x4GtSName. + v128CmpTypeI32x4GtS + // v128CmpTypeI32x4GtU corresponds to wasm.OpcodeVecI32x4GtUName. + v128CmpTypeI32x4GtU + // v128CmpTypeI32x4LeS corresponds to wasm.OpcodeVecI32x4LeSName. + v128CmpTypeI32x4LeS + // v128CmpTypeI32x4LeU corresponds to wasm.OpcodeVecI32x4LeUName. + v128CmpTypeI32x4LeU + // v128CmpTypeI32x4GeS corresponds to wasm.OpcodeVecI32x4GeSName. + v128CmpTypeI32x4GeS + // v128CmpTypeI32x4GeU corresponds to wasm.OpcodeVecI32x4GeUName. + v128CmpTypeI32x4GeU + // v128CmpTypeI64x2Eq corresponds to wasm.OpcodeVecI64x2EqName. + v128CmpTypeI64x2Eq + // v128CmpTypeI64x2Ne corresponds to wasm.OpcodeVecI64x2NeName. + v128CmpTypeI64x2Ne + // v128CmpTypeI64x2LtS corresponds to wasm.OpcodeVecI64x2LtSName. + v128CmpTypeI64x2LtS + // v128CmpTypeI64x2GtS corresponds to wasm.OpcodeVecI64x2GtSName. + v128CmpTypeI64x2GtS + // v128CmpTypeI64x2LeS corresponds to wasm.OpcodeVecI64x2LeSName. + v128CmpTypeI64x2LeS + // v128CmpTypeI64x2GeS corresponds to wasm.OpcodeVecI64x2GeSName. + v128CmpTypeI64x2GeS + // v128CmpTypeF32x4Eq corresponds to wasm.OpcodeVecF32x4EqName. + v128CmpTypeF32x4Eq + // v128CmpTypeF32x4Ne corresponds to wasm.OpcodeVecF32x4NeName. + v128CmpTypeF32x4Ne + // v128CmpTypeF32x4Lt corresponds to wasm.OpcodeVecF32x4LtName. + v128CmpTypeF32x4Lt + // v128CmpTypeF32x4Gt corresponds to wasm.OpcodeVecF32x4GtName. + v128CmpTypeF32x4Gt + // v128CmpTypeF32x4Le corresponds to wasm.OpcodeVecF32x4LeName. + v128CmpTypeF32x4Le + // v128CmpTypeF32x4Ge corresponds to wasm.OpcodeVecF32x4GeName. + v128CmpTypeF32x4Ge + // v128CmpTypeF64x2Eq corresponds to wasm.OpcodeVecF64x2EqName. + v128CmpTypeF64x2Eq + // v128CmpTypeF64x2Ne corresponds to wasm.OpcodeVecF64x2NeName. + v128CmpTypeF64x2Ne + // v128CmpTypeF64x2Lt corresponds to wasm.OpcodeVecF64x2LtName. + v128CmpTypeF64x2Lt + // v128CmpTypeF64x2Gt corresponds to wasm.OpcodeVecF64x2GtName. + v128CmpTypeF64x2Gt + // v128CmpTypeF64x2Le corresponds to wasm.OpcodeVecF64x2LeName. + v128CmpTypeF64x2Le + // v128CmpTypeF64x2Ge corresponds to wasm.OpcodeVecF64x2GeName. + v128CmpTypeF64x2Ge +) + +// NewOperationV128AddSat is a constructor for unionOperation with operationKindV128AddSat. +// +// This corresponds to wasm.OpcodeVecI8x16AddSatUName wasm.OpcodeVecI8x16AddSatSName +// +// wasm.OpcodeVecI16x8AddSatUName wasm.OpcodeVecI16x8AddSatSName +// +// shape is either shapeI8x16 or shapeI16x8. +func newOperationV128AddSat(shape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128AddSat, B1: shape, B3: signed} +} + +// NewOperationV128SubSat is a constructor for unionOperation with operationKindV128SubSat. +// +// This corresponds to wasm.OpcodeVecI8x16SubSatUName wasm.OpcodeVecI8x16SubSatSName +// +// wasm.OpcodeVecI16x8SubSatUName wasm.OpcodeVecI16x8SubSatSName +// +// shape is either shapeI8x16 or shapeI16x8. +func newOperationV128SubSat(shape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128SubSat, B1: shape, B3: signed} +} + +// NewOperationV128Mul is a constructor for unionOperation with operationKindV128Mul +// +// This corresponds to wasm.OpcodeVecF32x4MulName wasm.OpcodeVecF64x2MulName +// +// wasm.OpcodeVecI16x8MulName wasm.OpcodeVecI32x4MulName wasm.OpcodeVecI64x2MulName. +// shape is either shapeI16x8, shapeI32x4, shapeI64x2, shapeF32x4 or shapeF64x2. +func newOperationV128Mul(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Mul, B1: shape} +} + +// NewOperationV128Div is a constructor for unionOperation with operationKindV128Div. +// +// This corresponds to wasm.OpcodeVecF32x4DivName wasm.OpcodeVecF64x2DivName. +// shape is either shapeF32x4 or shapeF64x2. +func newOperationV128Div(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Div, B1: shape} +} + +// NewOperationV128Neg is a constructor for unionOperation with operationKindV128Neg. +// +// This corresponds to wasm.OpcodeVecI8x16NegName wasm.OpcodeVecI16x8NegName wasm.OpcodeVecI32x4NegName +// +// wasm.OpcodeVecI64x2NegName wasm.OpcodeVecF32x4NegName wasm.OpcodeVecF64x2NegName. +func newOperationV128Neg(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Neg, B1: shape} +} + +// NewOperationV128Sqrt is a constructor for unionOperation with 128operationKindV128Sqrt. +// +// shape is either shapeF32x4 or shapeF64x2. +// This corresponds to wasm.OpcodeVecF32x4SqrtName wasm.OpcodeVecF64x2SqrtName. +func newOperationV128Sqrt(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Sqrt, B1: shape} +} + +// NewOperationV128Abs is a constructor for unionOperation with operationKindV128Abs. +// +// This corresponds to wasm.OpcodeVecI8x16AbsName wasm.OpcodeVecI16x8AbsName wasm.OpcodeVecI32x4AbsName +// +// wasm.OpcodeVecI64x2AbsName wasm.OpcodeVecF32x4AbsName wasm.OpcodeVecF64x2AbsName. +func newOperationV128Abs(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Abs, B1: shape} +} + +// NewOperationV128Popcnt is a constructor for unionOperation with operationKindV128Popcnt. +// +// This corresponds to wasm.OpcodeVecI8x16PopcntName. +func newOperationV128Popcnt(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Popcnt, B1: shape} +} + +// NewOperationV128Min is a constructor for unionOperation with operationKindV128Min. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16MinSName wasm.OpcodeVecI8x16MinUName　wasm.OpcodeVecI16x8MinSName wasm.OpcodeVecI16x8MinUName +// wasm.OpcodeVecI32x4MinSName wasm.OpcodeVecI32x4MinUName　wasm.OpcodeVecI16x8MinSName wasm.OpcodeVecI16x8MinUName +// wasm.OpcodeVecF32x4MinName wasm.OpcodeVecF64x2MinName +func newOperationV128Min(shape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128Min, B1: shape, B3: signed} +} + +// NewOperationV128Max is a constructor for unionOperation with operationKindV128Max. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16MaxSName wasm.OpcodeVecI8x16MaxUName　wasm.OpcodeVecI16x8MaxSName wasm.OpcodeVecI16x8MaxUName +// wasm.OpcodeVecI32x4MaxSName wasm.OpcodeVecI32x4MaxUName　wasm.OpcodeVecI16x8MaxSName wasm.OpcodeVecI16x8MaxUName +// wasm.OpcodeVecF32x4MaxName wasm.OpcodeVecF64x2MaxName. +func newOperationV128Max(shape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128Max, B1: shape, B3: signed} +} + +// NewOperationV128AvgrU is a constructor for unionOperation with operationKindV128AvgrU. +// +// This corresponds to wasm.OpcodeVecI8x16AvgrUName. +func newOperationV128AvgrU(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128AvgrU, B1: shape} +} + +// NewOperationV128Pmin is a constructor for unionOperation with operationKindV128Pmin. +// +// This corresponds to wasm.OpcodeVecF32x4PminName wasm.OpcodeVecF64x2PminName. +func newOperationV128Pmin(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Pmin, B1: shape} +} + +// NewOperationV128Pmax is a constructor for unionOperation with operationKindV128Pmax. +// +// This corresponds to wasm.OpcodeVecF32x4PmaxName wasm.OpcodeVecF64x2PmaxName. +func newOperationV128Pmax(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Pmax, B1: shape} +} + +// NewOperationV128Ceil is a constructor for unionOperation with operationKindV128Ceil. +// +// This corresponds to wasm.OpcodeVecF32x4CeilName wasm.OpcodeVecF64x2CeilName +func newOperationV128Ceil(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Ceil, B1: shape} +} + +// NewOperationV128Floor is a constructor for unionOperation with operationKindV128Floor. +// +// This corresponds to wasm.OpcodeVecF32x4FloorName wasm.OpcodeVecF64x2FloorName +func newOperationV128Floor(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Floor, B1: shape} +} + +// NewOperationV128Trunc is a constructor for unionOperation with operationKindV128Trunc. +// +// This corresponds to wasm.OpcodeVecF32x4TruncName wasm.OpcodeVecF64x2TruncName +func newOperationV128Trunc(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Trunc, B1: shape} +} + +// NewOperationV128Nearest is a constructor for unionOperation with operationKindV128Nearest. +// +// This corresponds to wasm.OpcodeVecF32x4NearestName wasm.OpcodeVecF64x2NearestName +func newOperationV128Nearest(shape shape) unionOperation { + return unionOperation{Kind: operationKindV128Nearest, B1: shape} +} + +// NewOperationV128Extend is a constructor for unionOperation with operationKindV128Extend. +// +// This corresponds to +// +// wasm.OpcodeVecI16x8ExtendLowI8x16SName wasm.OpcodeVecI16x8ExtendHighI8x16SName +// wasm.OpcodeVecI16x8ExtendLowI8x16UName wasm.OpcodeVecI16x8ExtendHighI8x16UName +// wasm.OpcodeVecI32x4ExtendLowI16x8SName wasm.OpcodeVecI32x4ExtendHighI16x8SName +// wasm.OpcodeVecI32x4ExtendLowI16x8UName wasm.OpcodeVecI32x4ExtendHighI16x8UName +// wasm.OpcodeVecI64x2ExtendLowI32x4SName wasm.OpcodeVecI64x2ExtendHighI32x4SName +// wasm.OpcodeVecI64x2ExtendLowI32x4UName wasm.OpcodeVecI64x2ExtendHighI32x4UName +// +// originshape is the shape of the original lanes for extension which is +// either shapeI8x16, shapeI16x8, or shapeI32x4. +// useLow true if it uses the lower half of vector for extension. +func newOperationV128Extend(originshape shape, signed bool, useLow bool) unionOperation { + op := unionOperation{Kind: operationKindV128Extend} + op.B1 = originshape + if signed { + op.B2 = 1 + } + op.B3 = useLow + return op +} + +// NewOperationV128ExtMul is a constructor for unionOperation with operationKindV128ExtMul. +// +// This corresponds to +// +// wasm.OpcodeVecI16x8ExtMulLowI8x16SName wasm.OpcodeVecI16x8ExtMulLowI8x16UName +// wasm.OpcodeVecI16x8ExtMulHighI8x16SName wasm.OpcodeVecI16x8ExtMulHighI8x16UName +// wasm.OpcodeVecI32x4ExtMulLowI16x8SName wasm.OpcodeVecI32x4ExtMulLowI16x8UName +// wasm.OpcodeVecI32x4ExtMulHighI16x8SName wasm.OpcodeVecI32x4ExtMulHighI16x8UName +// wasm.OpcodeVecI64x2ExtMulLowI32x4SName wasm.OpcodeVecI64x2ExtMulLowI32x4UName +// wasm.OpcodeVecI64x2ExtMulHighI32x4SName wasm.OpcodeVecI64x2ExtMulHighI32x4UName. +// +// originshape is the shape of the original lanes for extension which is +// either shapeI8x16, shapeI16x8, or shapeI32x4. +// useLow true if it uses the lower half of vector for extension. +func newOperationV128ExtMul(originshape shape, signed bool, useLow bool) unionOperation { + op := unionOperation{Kind: operationKindV128ExtMul} + op.B1 = originshape + if signed { + op.B2 = 1 + } + op.B3 = useLow + return op +} + +// NewOperationV128Q15mulrSatS is a constructor for unionOperation with operationKindV128Q15mulrSatS. +// +// This corresponds to wasm.OpcodeVecI16x8Q15mulrSatSName +func newOperationV128Q15mulrSatS() unionOperation { + return unionOperation{Kind: operationKindV128Q15mulrSatS} +} + +// NewOperationV128ExtAddPairwise is a constructor for unionOperation with operationKindV128ExtAddPairwise. +// +// This corresponds to +// +// wasm.OpcodeVecI16x8ExtaddPairwiseI8x16SName wasm.OpcodeVecI16x8ExtaddPairwiseI8x16UName +// wasm.OpcodeVecI32x4ExtaddPairwiseI16x8SName wasm.OpcodeVecI32x4ExtaddPairwiseI16x8UName. +// +// originshape is the shape of the original lanes for extension which is +// either shapeI8x16, or shapeI16x8. +func newOperationV128ExtAddPairwise(originshape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128ExtAddPairwise, B1: originshape, B3: signed} +} + +// NewOperationV128FloatPromote is a constructor for unionOperation with NewOperationV128FloatPromote. +// +// This corresponds to wasm.OpcodeVecF64x2PromoteLowF32x4ZeroName +// This discards the higher 64-bit of a vector, and promotes two +// 32-bit floats in the lower 64-bit as two 64-bit floats. +func newOperationV128FloatPromote() unionOperation { + return unionOperation{Kind: operationKindV128FloatPromote} +} + +// NewOperationV128FloatDemote is a constructor for unionOperation with NewOperationV128FloatDemote. +// +// This corresponds to wasm.OpcodeVecF32x4DemoteF64x2ZeroName. +func newOperationV128FloatDemote() unionOperation { + return unionOperation{Kind: operationKindV128FloatDemote} +} + +// NewOperationV128FConvertFromI is a constructor for unionOperation with NewOperationV128FConvertFromI. +// +// This corresponds to +// +// wasm.OpcodeVecF32x4ConvertI32x4SName wasm.OpcodeVecF32x4ConvertI32x4UName +// wasm.OpcodeVecF64x2ConvertLowI32x4SName wasm.OpcodeVecF64x2ConvertLowI32x4UName. +// +// destinationshape is the shape of the destination lanes for conversion which is +// either shapeF32x4, or shapeF64x2. +func newOperationV128FConvertFromI(destinationshape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128FConvertFromI, B1: destinationshape, B3: signed} +} + +// NewOperationV128Dot is a constructor for unionOperation with operationKindV128Dot. +// +// This corresponds to wasm.OpcodeVecI32x4DotI16x8SName +func newOperationV128Dot() unionOperation { + return unionOperation{Kind: operationKindV128Dot} +} + +// NewOperationV128Narrow is a constructor for unionOperation with operationKindV128Narrow. +// +// This corresponds to +// +// wasm.OpcodeVecI8x16NarrowI16x8SName wasm.OpcodeVecI8x16NarrowI16x8UName +// wasm.OpcodeVecI16x8NarrowI32x4SName wasm.OpcodeVecI16x8NarrowI32x4UName. +// +// originshape is the shape of the original lanes for narrowing which is +// either shapeI16x8, or shapeI32x4. +func newOperationV128Narrow(originshape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128Narrow, B1: originshape, B3: signed} +} + +// NewOperationV128ITruncSatFromF is a constructor for unionOperation with operationKindV128ITruncSatFromF. +// +// This corresponds to +// +// wasm.OpcodeVecI32x4TruncSatF64x2UZeroName wasm.OpcodeVecI32x4TruncSatF64x2SZeroName +// wasm.OpcodeVecI32x4TruncSatF32x4UName wasm.OpcodeVecI32x4TruncSatF32x4SName. +// +// originshape is the shape of the original lanes for truncation which is +// either shapeF32x4, or shapeF64x2. +func newOperationV128ITruncSatFromF(originshape shape, signed bool) unionOperation { + return unionOperation{Kind: operationKindV128ITruncSatFromF, B1: originshape, B3: signed} +} + +// atomicArithmeticOp is the type for the operation kind of atomic arithmetic operations. +type atomicArithmeticOp byte + +const ( + // atomicArithmeticOpAdd is the kind for an add operation. + atomicArithmeticOpAdd atomicArithmeticOp = iota + // atomicArithmeticOpSub is the kind for a sub operation. + atomicArithmeticOpSub + // atomicArithmeticOpAnd is the kind for a bitwise and operation. + atomicArithmeticOpAnd + // atomicArithmeticOpOr is the kind for a bitwise or operation. + atomicArithmeticOpOr + // atomicArithmeticOpXor is the kind for a bitwise xor operation. + atomicArithmeticOpXor + // atomicArithmeticOpNop is the kind for a nop operation. + atomicArithmeticOpNop +) + +// NewOperationAtomicMemoryWait is a constructor for unionOperation with operationKindAtomicMemoryWait. +// +// This corresponds to +// +// wasm.OpcodeAtomicWait32Name wasm.OpcodeAtomicWait64Name +func newOperationAtomicMemoryWait(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicMemoryWait, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicMemoryNotify is a constructor for unionOperation with operationKindAtomicMemoryNotify. +// +// This corresponds to +// +// wasm.OpcodeAtomicNotifyName +func newOperationAtomicMemoryNotify(arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicMemoryNotify, U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicFence is a constructor for unionOperation with operationKindAtomicFence. +// +// This corresponds to +// +// wasm.OpcodeAtomicFenceName +func newOperationAtomicFence() unionOperation { + return unionOperation{Kind: operationKindAtomicFence} +} + +// NewOperationAtomicLoad is a constructor for unionOperation with operationKindAtomicLoad. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32LoadName wasm.OpcodeAtomicI64LoadName +func newOperationAtomicLoad(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicLoad, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicLoad8 is a constructor for unionOperation with operationKindAtomicLoad8. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32Load8UName wasm.OpcodeAtomicI64Load8UName +func newOperationAtomicLoad8(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicLoad8, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicLoad16 is a constructor for unionOperation with operationKindAtomicLoad16. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32Load16UName wasm.OpcodeAtomicI64Load16UName +func newOperationAtomicLoad16(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicLoad16, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicStore is a constructor for unionOperation with operationKindAtomicStore. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32StoreName wasm.OpcodeAtomicI64StoreName +func newOperationAtomicStore(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicStore, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicStore8 is a constructor for unionOperation with operationKindAtomicStore8. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32Store8UName wasm.OpcodeAtomicI64Store8UName +func newOperationAtomicStore8(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicStore8, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicStore16 is a constructor for unionOperation with operationKindAtomicStore16. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32Store16UName wasm.OpcodeAtomicI64Store16UName +func newOperationAtomicStore16(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicStore16, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicRMW is a constructor for unionOperation with operationKindAtomicRMW. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32RMWAddName wasm.OpcodeAtomicI64RmwAddName +// wasm.OpcodeAtomicI32RMWSubName wasm.OpcodeAtomicI64RmwSubName +// wasm.OpcodeAtomicI32RMWAndName wasm.OpcodeAtomicI64RmwAndName +// wasm.OpcodeAtomicI32RMWOrName wasm.OpcodeAtomicI64RmwOrName +// wasm.OpcodeAtomicI32RMWXorName wasm.OpcodeAtomicI64RmwXorName +func newOperationAtomicRMW(unsignedType unsignedType, arg memoryArg, op atomicArithmeticOp) unionOperation { + return unionOperation{Kind: operationKindAtomicRMW, B1: byte(unsignedType), B2: byte(op), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicRMW8 is a constructor for unionOperation with operationKindAtomicRMW8. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32RMW8AddUName wasm.OpcodeAtomicI64Rmw8AddUName +// wasm.OpcodeAtomicI32RMW8SubUName wasm.OpcodeAtomicI64Rmw8SubUName +// wasm.OpcodeAtomicI32RMW8AndUName wasm.OpcodeAtomicI64Rmw8AndUName +// wasm.OpcodeAtomicI32RMW8OrUName wasm.OpcodeAtomicI64Rmw8OrUName +// wasm.OpcodeAtomicI32RMW8XorUName wasm.OpcodeAtomicI64Rmw8XorUName +func newOperationAtomicRMW8(unsignedType unsignedType, arg memoryArg, op atomicArithmeticOp) unionOperation { + return unionOperation{Kind: operationKindAtomicRMW8, B1: byte(unsignedType), B2: byte(op), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicRMW16 is a constructor for unionOperation with operationKindAtomicRMW16. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32RMW16AddUName wasm.OpcodeAtomicI64Rmw16AddUName +// wasm.OpcodeAtomicI32RMW16SubUName wasm.OpcodeAtomicI64Rmw16SubUName +// wasm.OpcodeAtomicI32RMW16AndUName wasm.OpcodeAtomicI64Rmw16AndUName +// wasm.OpcodeAtomicI32RMW16OrUName wasm.OpcodeAtomicI64Rmw16OrUName +// wasm.OpcodeAtomicI32RMW16XorUName wasm.OpcodeAtomicI64Rmw16XorUName +func newOperationAtomicRMW16(unsignedType unsignedType, arg memoryArg, op atomicArithmeticOp) unionOperation { + return unionOperation{Kind: operationKindAtomicRMW16, B1: byte(unsignedType), B2: byte(op), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicRMWCmpxchg is a constructor for unionOperation with operationKindAtomicRMWCmpxchg. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32RMWCmpxchgName wasm.OpcodeAtomicI64RmwCmpxchgName +func newOperationAtomicRMWCmpxchg(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicRMWCmpxchg, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicRMW8Cmpxchg is a constructor for unionOperation with operationKindAtomicRMW8Cmpxchg. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32RMW8CmpxchgUName wasm.OpcodeAtomicI64Rmw8CmpxchgUName +func newOperationAtomicRMW8Cmpxchg(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicRMW8Cmpxchg, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} + +// NewOperationAtomicRMW16Cmpxchg is a constructor for unionOperation with operationKindAtomicRMW16Cmpxchg. +// +// This corresponds to +// +// wasm.OpcodeAtomicI32RMW16CmpxchgUName wasm.OpcodeAtomicI64Rmw16CmpxchgUName +func newOperationAtomicRMW16Cmpxchg(unsignedType unsignedType, arg memoryArg) unionOperation { + return unionOperation{Kind: operationKindAtomicRMW16Cmpxchg, B1: byte(unsignedType), U1: uint64(arg.Alignment), U2: uint64(arg.Offset)} +} diff --git a/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/signature.go b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/signature.go new file mode 100644 index 000000000..7b9d5602d --- /dev/null +++ b/vendor/github.com/tetratelabs/wazero/internal/engine/interpreter/signature.go @@ -0,0 +1,767 @@ +package interpreter + +import ( + "fmt" + + "github.com/tetratelabs/wazero/internal/wasm" +) + +// signature represents how a Wasm opcode +// manipulates the value stacks in terms of value types. +type signature struct { + in, out []unsignedType +} + +var ( + signature_None_None = &signature{} + signature_Unknown_None = &signature{ + in: []unsignedType{unsignedTypeUnknown}, + } + signature_None_I32 = &signature{ + out: []unsignedType{unsignedTypeI32}, + } + signature_None_I64 = &signature{ + out: []unsignedType{unsignedTypeI64}, + } + signature_None_V128 = &signature{ + out: []unsignedType{unsignedTypeV128}, + } + signature_None_F32 = &signature{ + out: []unsignedType{unsignedTypeF32}, + } + signature_None_F64 = &signature{ + out: []unsignedType{unsignedTypeF64}, + } + signature_I32_None = &signature{ + in: []unsignedType{unsignedTypeI32}, + } + signature_I64_None = &signature{ + in: []unsignedType{unsignedTypeI64}, + } + signature_F32_None = &signature{ + in: []unsignedType{unsignedTypeF32}, + } + signature_F64_None = &signature{ + in: []unsignedType{unsignedTypeF64}, + } + signature_V128_None = &signature{ + in: []unsignedType{unsignedTypeV128}, + } + signature_I32_I32 = &signature{ + in: []unsignedType{unsignedTypeI32}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I32_I64 = &signature{ + in: []unsignedType{unsignedTypeI32}, + out: []unsignedType{unsignedTypeI64}, + } + signature_I64_I64 = &signature{ + in: []unsignedType{unsignedTypeI64}, + out: []unsignedType{unsignedTypeI64}, + } + signature_I32_F32 = &signature{ + in: []unsignedType{unsignedTypeI32}, + out: []unsignedType{unsignedTypeF32}, + } + signature_I32_F64 = &signature{ + in: []unsignedType{unsignedTypeI32}, + out: []unsignedType{unsignedTypeF64}, + } + signature_I64_I32 = &signature{ + in: []unsignedType{unsignedTypeI64}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I64_F32 = &signature{ + in: []unsignedType{unsignedTypeI64}, + out: []unsignedType{unsignedTypeF32}, + } + signature_I64_F64 = &signature{ + in: []unsignedType{unsignedTypeI64}, + out: []unsignedType{unsignedTypeF64}, + } + signature_F32_I32 = &signature{ + in: []unsignedType{unsignedTypeF32}, + out: []unsignedType{unsignedTypeI32}, + } + signature_F32_I64 = &signature{ + in: []unsignedType{unsignedTypeF32}, + out: []unsignedType{unsignedTypeI64}, + } + signature_F32_F64 = &signature{ + in: []unsignedType{unsignedTypeF32}, + out: []unsignedType{unsignedTypeF64}, + } + signature_F32_F32 = &signature{ + in: []unsignedType{unsignedTypeF32}, + out: []unsignedType{unsignedTypeF32}, + } + signature_F64_I32 = &signature{ + in: []unsignedType{unsignedTypeF64}, + out: []unsignedType{unsignedTypeI32}, + } + signature_F64_F32 = &signature{ + in: []unsignedType{unsignedTypeF64}, + out: []unsignedType{unsignedTypeF32}, + } + signature_F64_I64 = &signature{ + in: []unsignedType{unsignedTypeF64}, + out: []unsignedType{unsignedTypeI64}, + } + signature_F64_F64 = &signature{ + in: []unsignedType{unsignedTypeF64}, + out: []unsignedType{unsignedTypeF64}, + } + signature_I32I32_None = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI32}, + } + + signature_I32I32_I32 = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI32}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I32I64_None = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI64}, + } + signature_I32F32_None = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeF32}, + } + signature_I32F64_None = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeF64}, + } + signature_I64I32_I32 = &signature{ + in: []unsignedType{unsignedTypeI64, unsignedTypeI32}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I64I64_I32 = &signature{ + in: []unsignedType{unsignedTypeI64, unsignedTypeI64}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I64I64_I64 = &signature{ + in: []unsignedType{unsignedTypeI64, unsignedTypeI64}, + out: []unsignedType{unsignedTypeI64}, + } + signature_F32F32_I32 = &signature{ + in: []unsignedType{unsignedTypeF32, unsignedTypeF32}, + out: []unsignedType{unsignedTypeI32}, + } + signature_F32F32_F32 = &signature{ + in: []unsignedType{unsignedTypeF32, unsignedTypeF32}, + out: []unsignedType{unsignedTypeF32}, + } + signature_F64F64_I32 = &signature{ + in: []unsignedType{unsignedTypeF64, unsignedTypeF64}, + out: []unsignedType{unsignedTypeI32}, + } + signature_F64F64_F64 = &signature{ + in: []unsignedType{unsignedTypeF64, unsignedTypeF64}, + out: []unsignedType{unsignedTypeF64}, + } + signature_I32I32I32_None = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI32, unsignedTypeI32}, + } + signature_I32I64I32_None = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI64, unsignedTypeI32}, + } + signature_UnknownUnknownI32_Unknown = &signature{ + in: []unsignedType{unsignedTypeUnknown, unsignedTypeUnknown, unsignedTypeI32}, + out: []unsignedType{unsignedTypeUnknown}, + } + signature_V128V128_V128 = &signature{ + in: []unsignedType{unsignedTypeV128, unsignedTypeV128}, + out: []unsignedType{unsignedTypeV128}, + } + signature_V128V128V128_V32 = &signature{ + in: []unsignedType{unsignedTypeV128, unsignedTypeV128, unsignedTypeV128}, + out: []unsignedType{unsignedTypeV128}, + } + signature_I32_V128 = &signature{ + in: []unsignedType{unsignedTypeI32}, + out: []unsignedType{unsignedTypeV128}, + } + signature_I32V128_None = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeV128}, + } + signature_I32V128_V128 = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeV128}, + out: []unsignedType{unsignedTypeV128}, + } + signature_V128I32_V128 = &signature{ + in: []unsignedType{unsignedTypeV128, unsignedTypeI32}, + out: []unsignedType{unsignedTypeV128}, + } + signature_V128I64_V128 = &signature{ + in: []unsignedType{unsignedTypeV128, unsignedTypeI64}, + out: []unsignedType{unsignedTypeV128}, + } + signature_V128F32_V128 = &signature{ + in: []unsignedType{unsignedTypeV128, unsignedTypeF32}, + out: []unsignedType{unsignedTypeV128}, + } + signature_V128F64_V128 = &signature{ + in: []unsignedType{unsignedTypeV128, unsignedTypeF64}, + out: []unsignedType{unsignedTypeV128}, + } + signature_V128_I32 = &signature{ + in: []unsignedType{unsignedTypeV128}, + out: []unsignedType{unsignedTypeI32}, + } + signature_V128_I64 = &signature{ + in: []unsignedType{unsignedTypeV128}, + out: []unsignedType{unsignedTypeI64}, + } + signature_V128_F32 = &signature{ + in: []unsignedType{unsignedTypeV128}, + out: []unsignedType{unsignedTypeF32}, + } + signature_V128_F64 = &signature{ + in: []unsignedType{unsignedTypeV128}, + out: []unsignedType{unsignedTypeF64}, + } + signature_V128_V128 = &signature{ + in: []unsignedType{unsignedTypeV128}, + out: []unsignedType{unsignedTypeV128}, + } + signature_I64_V128 = &signature{ + in: []unsignedType{unsignedTypeI64}, + out: []unsignedType{unsignedTypeV128}, + } + signature_F32_V128 = &signature{ + in: []unsignedType{unsignedTypeF32}, + out: []unsignedType{unsignedTypeV128}, + } + signature_F64_V128 = &signature{ + in: []unsignedType{unsignedTypeF64}, + out: []unsignedType{unsignedTypeV128}, + } + signature_I32I64_I64 = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI64}, + out: []unsignedType{unsignedTypeI64}, + } + signature_I32I32I64_I32 = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI32, unsignedTypeI64}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I32I64I64_I32 = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI64, unsignedTypeI64}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I32I32I32_I32 = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI32, unsignedTypeI32}, + out: []unsignedType{unsignedTypeI32}, + } + signature_I32I64I64_I64 = &signature{ + in: []unsignedType{unsignedTypeI32, unsignedTypeI64, unsignedTypeI64}, + out: []unsignedType{unsignedTypeI64}, + } +) + +// wasmOpcodeSignature returns the signature of given Wasm opcode. +// Note that some of opcodes' signature vary depending on +// the function instance (for example, local types). +// "index" parameter is not used by most of opcodes. +// The returned signature is used for stack validation when lowering Wasm's opcodes to interpreterir. +func (c *compiler) wasmOpcodeSignature(op wasm.Opcode, index uint32) (*signature, error) { + switch op { + case wasm.OpcodeUnreachable, wasm.OpcodeNop, wasm.OpcodeBlock, wasm.OpcodeLoop: + return signature_None_None, nil + case wasm.OpcodeIf: + return signature_I32_None, nil + case wasm.OpcodeElse, wasm.OpcodeEnd, wasm.OpcodeBr: + return signature_None_None, nil + case wasm.OpcodeBrIf, wasm.OpcodeBrTable: + return signature_I32_None, nil + case wasm.OpcodeReturn: + return signature_None_None, nil + case wasm.OpcodeCall: + return c.funcTypeToSigs.get(c.funcs[index], false /* direct */), nil + case wasm.OpcodeCallIndirect: + return c.funcTypeToSigs.get(index, true /* call_indirect */), nil + case wasm.OpcodeDrop: + return signature_Unknown_None, nil + case wasm.OpcodeSelect, wasm.OpcodeTypedSelect: + return signature_UnknownUnknownI32_Unknown, nil + case wasm.OpcodeLocalGet: + inputLen := uint32(len(c.sig.Params)) + if l := uint32(len(c.localTypes)) + inputLen; index >= l { + return nil, fmt.Errorf("invalid local index for local.get %d >= %d", index, l) + } + var t wasm.ValueType + if index < inputLen { + t = c.sig.Params[index] + } else { + t = c.localTypes[index-inputLen] + } + return wasmValueTypeToUnsignedOutSignature(t), nil + case wasm.OpcodeLocalSet: + inputLen := uint32(len(c.sig.Params)) + if l := uint32(len(c.localTypes)) + inputLen; index >= l { + return nil, fmt.Errorf("invalid local index for local.get %d >= %d", index, l) + } + var t wasm.ValueType + if index < inputLen { + t = c.sig.Params[index] + } else { + t = c.localTypes[index-inputLen] + } + return wasmValueTypeToUnsignedInSignature(t), nil + case wasm.OpcodeLocalTee: + inputLen := uint32(len(c.sig.Params)) + if l := uint32(len(c.localTypes)) + inputLen; index >= l { + return nil, fmt.Errorf("invalid local index for local.get %d >= %d", index, l) + } + var t wasm.ValueType + if index < inputLen { + t = c.sig.Params[index] + } else { + t = c.localTypes[index-inputLen] + } + return wasmValueTypeToUnsignedInOutSignature(t), nil + case wasm.OpcodeGlobalGet: + if len(c.globals) <= int(index) { + return nil, fmt.Errorf("invalid global index for global.get %d >= %d", index, len(c.globals)) + } + return wasmValueTypeToUnsignedOutSignature(c.globals[index].ValType), nil + case wasm.OpcodeGlobalSet: + if len(c.globals) <= int(index) { + return nil, fmt.Errorf("invalid global index for global.get %d >= %d", index, len(c.globals)) + } + return wasmValueTypeToUnsignedInSignature(c.globals[index].ValType), nil + case wasm.OpcodeI32Load: + return signature_I32_I32, nil + case wasm.OpcodeI64Load: + return signature_I32_I64, nil + case wasm.OpcodeF32Load: + return signature_I32_F32, nil + case wasm.OpcodeF64Load: + return signature_I32_F64, nil + case wasm.OpcodeI32Load8S, wasm.OpcodeI32Load8U, wasm.OpcodeI32Load16S, wasm.OpcodeI32Load16U: + return signature_I32_I32, nil + case wasm.OpcodeI64Load8S, wasm.OpcodeI64Load8U, wasm.OpcodeI64Load16S, wasm.OpcodeI64Load16U, + wasm.OpcodeI64Load32S, wasm.OpcodeI64Load32U: + return signature_I32_I64, nil + case wasm.OpcodeI32Store: + return signature_I32I32_None, nil + case wasm.OpcodeI64Store: + return signature_I32I64_None, nil + case wasm.OpcodeF32Store: + return signature_I32F32_None, nil + case wasm.OpcodeF64Store: + return signature_I32F64_None, nil + case wasm.OpcodeI32Store8: + return signature_I32I32_None, nil + case wasm.OpcodeI32Store16: + return signature_I32I32_None, nil + case wasm.OpcodeI64Store8: + return signature_I32I64_None, nil + case wasm.OpcodeI64Store16: + return signature_I32I64_None, nil + case wasm.OpcodeI64Store32: + return signature_I32I64_None, nil + case wasm.OpcodeMemorySize: + return signature_None_I32, nil + case wasm.OpcodeMemoryGrow: + return signature_I32_I32, nil + case wasm.OpcodeI32Const: + return signature_None_I32, nil + case wasm.OpcodeI64Const: + return signature_None_I64, nil + case wasm.OpcodeF32Const: + return signature_None_F32, nil + case wasm.OpcodeF64Const: + return signature_None_F64, nil + case wasm.OpcodeI32Eqz: + return signature_I32_I32, nil + case wasm.OpcodeI32Eq, wasm.OpcodeI32Ne, wasm.OpcodeI32LtS, + wasm.OpcodeI32LtU, wasm.OpcodeI32GtS, wasm.OpcodeI32GtU, + wasm.OpcodeI32LeS, wasm.OpcodeI32LeU, wasm.OpcodeI32GeS, + wasm.OpcodeI32GeU: + return signature_I32I32_I32, nil + case wasm.OpcodeI64Eqz: + return signature_I64_I32, nil + case wasm.OpcodeI64Eq, wasm.OpcodeI64Ne, wasm.OpcodeI64LtS, + wasm.OpcodeI64LtU, wasm.OpcodeI64GtS, wasm.OpcodeI64GtU, + wasm.OpcodeI64LeS, wasm.OpcodeI64LeU, wasm.OpcodeI64GeS, + wasm.OpcodeI64GeU: + return signature_I64I64_I32, nil + case wasm.OpcodeF32Eq, wasm.OpcodeF32Ne, wasm.OpcodeF32Lt, + wasm.OpcodeF32Gt, wasm.OpcodeF32Le, wasm.OpcodeF32Ge: + return signature_F32F32_I32, nil + case wasm.OpcodeF64Eq, wasm.OpcodeF64Ne, wasm.OpcodeF64Lt, + wasm.OpcodeF64Gt, wasm.OpcodeF64Le, wasm.OpcodeF64Ge: + return signature_F64F64_I32, nil + case wasm.OpcodeI32Clz, wasm.OpcodeI32Ctz, wasm.OpcodeI32Popcnt: + return signature_I32_I32, nil + case wasm.OpcodeI32Add, wasm.OpcodeI32Sub, wasm.OpcodeI32Mul, + wasm.OpcodeI32DivS, wasm.OpcodeI32DivU, wasm.OpcodeI32RemS, + wasm.OpcodeI32RemU, wasm.OpcodeI32And, wasm.OpcodeI32Or, + wasm.OpcodeI32Xor, wasm.OpcodeI32Shl, wasm.OpcodeI32ShrS, + wasm.OpcodeI32ShrU, wasm.OpcodeI32Rotl, wasm.OpcodeI32Rotr: + return signature_I32I32_I32, nil + case wasm.OpcodeI64Clz, wasm.OpcodeI64Ctz, wasm.OpcodeI64Popcnt: + return signature_I64_I64, nil + case wasm.OpcodeI64Add, wasm.OpcodeI64Sub, wasm.OpcodeI64Mul, + wasm.OpcodeI64DivS, wasm.OpcodeI64DivU, wasm.OpcodeI64RemS, + wasm.OpcodeI64RemU, wasm.OpcodeI64And, wasm.OpcodeI64Or, + wasm.OpcodeI64Xor, wasm.OpcodeI64Shl, wasm.OpcodeI64ShrS, + wasm.OpcodeI64ShrU, wasm.OpcodeI64Rotl, wasm.OpcodeI64Rotr: + return signature_I64I64_I64, nil + case wasm.OpcodeF32Abs, wasm.OpcodeF32Neg, wasm.OpcodeF32Ceil, + wasm.OpcodeF32Floor, wasm.OpcodeF32Trunc, wasm.OpcodeF32Nearest, + wasm.OpcodeF32Sqrt: + return signature_F32_F32, nil + case wasm.OpcodeF32Add, wasm.OpcodeF32Sub, wasm.OpcodeF32Mul, + wasm.OpcodeF32Div, wasm.OpcodeF32Min, wasm.OpcodeF32Max, + wasm.OpcodeF32Copysign: + return signature_F32F32_F32, nil + case wasm.OpcodeF64Abs, wasm.OpcodeF64Neg, wasm.OpcodeF64Ceil, + wasm.OpcodeF64Floor, wasm.OpcodeF64Trunc, wasm.OpcodeF64Nearest, + wasm.OpcodeF64Sqrt: + return signature_F64_F64, nil + case wasm.OpcodeF64Add, wasm.OpcodeF64Sub, wasm.OpcodeF64Mul, + wasm.OpcodeF64Div, wasm.OpcodeF64Min, wasm.OpcodeF64Max, + wasm.OpcodeF64Copysign: + return signature_F64F64_F64, nil + case wasm.OpcodeI32WrapI64: + return signature_I64_I32, nil + case wasm.OpcodeI32TruncF32S, wasm.OpcodeI32TruncF32U: + return signature_F32_I32, nil + case wasm.OpcodeI32TruncF64S, wasm.OpcodeI32TruncF64U: + return signature_F64_I32, nil + case wasm.OpcodeI64ExtendI32S, wasm.OpcodeI64ExtendI32U: + return signature_I32_I64, nil + case wasm.OpcodeI64TruncF32S, wasm.OpcodeI64TruncF32U: + return signature_F32_I64, nil + case wasm.OpcodeI64TruncF64S, wasm.OpcodeI64TruncF64U: + return signature_F64_I64, nil + case wasm.OpcodeF32ConvertI32S, wasm.OpcodeF32ConvertI32U: + return signature_I32_F32, nil + case wasm.OpcodeF32ConvertI64S, wasm.OpcodeF32ConvertI64U: + return signature_I64_F32, nil + case wasm.OpcodeF32DemoteF64: + return signature_F64_F32, nil + case wasm.OpcodeF64ConvertI32S, wasm.OpcodeF64ConvertI32U: + return signature_I32_F64, nil + case wasm.OpcodeF64ConvertI64S, wasm.OpcodeF64ConvertI64U: + return signature_I64_F64, nil + case wasm.OpcodeF64PromoteF32: + return signature_F32_F64, nil + case wasm.OpcodeI32ReinterpretF32: + return signature_F32_I32, nil + case wasm.OpcodeI64ReinterpretF64: + return signature_F64_I64, nil + case wasm.OpcodeF32ReinterpretI32: + return signature_I32_F32, nil + case wasm.OpcodeF64ReinterpretI64: + return signature_I64_F64, nil + case wasm.OpcodeI32Extend8S, wasm.OpcodeI32Extend16S: + return signature_I32_I32, nil + case wasm.OpcodeI64Extend8S, wasm.OpcodeI64Extend16S, wasm.OpcodeI64Extend32S: + return signature_I64_I64, nil + case wasm.OpcodeTableGet: + // table.get takes table's offset and pushes the ref type value of opaque pointer as i64 value onto the stack. + return signature_I32_I64, nil + case wasm.OpcodeTableSet: + // table.set takes table's offset and the ref type value of opaque pointer as i64 value. + return signature_I32I64_None, nil + case wasm.OpcodeRefFunc: + // ref.func is translated as pushing the compiled function's opaque pointer (uint64) at interpreterir layer. + return signature_None_I64, nil + case wasm.OpcodeRefIsNull: + // ref.is_null is translated as checking if the uint64 on the top of the stack (opaque pointer) is zero or not. + return signature_I64_I32, nil + case wasm.OpcodeRefNull: + // ref.null is translated as i64.const 0. + return signature_None_I64, nil + case wasm.OpcodeMiscPrefix: + switch miscOp := c.body[c.pc+1]; miscOp { + case wasm.OpcodeMiscI32TruncSatF32S, wasm.OpcodeMiscI32TruncSatF32U: + return signature_F32_I32, nil + case wasm.OpcodeMiscI32TruncSatF64S, wasm.OpcodeMiscI32TruncSatF64U: + return signature_F64_I32, nil + case wasm.OpcodeMiscI64TruncSatF32S, wasm.OpcodeMiscI64TruncSatF32U: + return signature_F32_I64, nil + case wasm.OpcodeMiscI64TruncSatF64S, wasm.OpcodeMiscI64TruncSatF64U: + return signature_F64_I64, nil + case wasm.OpcodeMiscMemoryInit, wasm.OpcodeMiscMemoryCopy, wasm.OpcodeMiscMemoryFill, + wasm.OpcodeMiscTableInit, wasm.OpcodeMiscTableCopy: + return signature_I32I32I32_None, nil + case wasm.OpcodeMiscDataDrop, wasm.OpcodeMiscElemDrop: + return signature_None_None, nil + case wasm.OpcodeMiscTableGrow: + return signature_I64I32_I32, nil + case wasm.OpcodeMiscTableSize: + return signature_None_I32, nil + case wasm.OpcodeMiscTableFill: + return signature_I32I64I32_None, nil + default: + return nil, fmt.Errorf("unsupported misc instruction in interpreterir: 0x%x", op) + } + case wasm.OpcodeVecPrefix: + switch vecOp := c.body[c.pc+1]; vecOp { + case wasm.OpcodeVecV128Const: + return signature_None_V128, nil + case wasm.OpcodeVecV128Load, wasm.OpcodeVecV128Load8x8s, wasm.OpcodeVecV128Load8x8u, + wasm.OpcodeVecV128Load16x4s, wasm.OpcodeVecV128Load16x4u, wasm.OpcodeVecV128Load32x2s, + wasm.OpcodeVecV128Load32x2u, wasm.OpcodeVecV128Load8Splat, wasm.OpcodeVecV128Load16Splat, + wasm.OpcodeVecV128Load32Splat, wasm.OpcodeVecV128Load64Splat, wasm.OpcodeVecV128Load32zero, + wasm.OpcodeVecV128Load64zero: + return signature_I32_V128, nil + case wasm.OpcodeVecV128Load8Lane, wasm.OpcodeVecV128Load16Lane, + wasm.OpcodeVecV128Load32Lane, wasm.OpcodeVecV128Load64Lane: + return signature_I32V128_V128, nil + case wasm.OpcodeVecV128Store, + wasm.OpcodeVecV128Store8Lane, + wasm.OpcodeVecV128Store16Lane, + wasm.OpcodeVecV128Store32Lane, + wasm.OpcodeVecV128Store64Lane: + return signature_I32V128_None, nil + case wasm.OpcodeVecI8x16ExtractLaneS, + wasm.OpcodeVecI8x16ExtractLaneU, + wasm.OpcodeVecI16x8ExtractLaneS, + wasm.OpcodeVecI16x8ExtractLaneU, + wasm.OpcodeVecI32x4ExtractLane: + return signature_V128_I32, nil + case wasm.OpcodeVecI64x2ExtractLane: + return signature_V128_I64, nil + case wasm.OpcodeVecF32x4ExtractLane: + return signature_V128_F32, nil + case wasm.OpcodeVecF64x2ExtractLane: + return signature_V128_F64, nil + case wasm.OpcodeVecI8x16ReplaceLane, wasm.OpcodeVecI16x8ReplaceLane, wasm.OpcodeVecI32x4ReplaceLane, + wasm.OpcodeVecI8x16Shl, wasm.OpcodeVecI8x16ShrS, wasm.OpcodeVecI8x16ShrU, + wasm.OpcodeVecI16x8Shl, wasm.OpcodeVecI16x8ShrS, wasm.OpcodeVecI16x8ShrU, + wasm.OpcodeVecI32x4Shl, wasm.OpcodeVecI32x4ShrS, wasm.OpcodeVecI32x4ShrU, + wasm.OpcodeVecI64x2Shl, wasm.OpcodeVecI64x2ShrS, wasm.OpcodeVecI64x2ShrU: + return signature_V128I32_V128, nil + case wasm.OpcodeVecI64x2ReplaceLane: + return signature_V128I64_V128, nil + case wasm.OpcodeVecF32x4ReplaceLane: + return signature_V128F32_V128, nil + case wasm.OpcodeVecF64x2ReplaceLane: + return signature_V128F64_V128, nil + case wasm.OpcodeVecI8x16Splat, + wasm.OpcodeVecI16x8Splat, + wasm.OpcodeVecI32x4Splat: + return signature_I32_V128, nil + case wasm.OpcodeVecI64x2Splat: + return signature_I64_V128, nil + case wasm.OpcodeVecF32x4Splat: + return signature_F32_V128, nil + case wasm.OpcodeVecF64x2Splat: + return signature_F64_V128, nil + case wasm.OpcodeVecV128i8x16Shuffle, wasm.OpcodeVecI8x16Swizzle, wasm.OpcodeVecV128And, wasm.OpcodeVecV128Or, wasm.OpcodeVecV128Xor, wasm.OpcodeVecV128AndNot: + return signature_V128V128_V128, nil + case wasm.OpcodeVecI8x16AllTrue, wasm.OpcodeVecI16x8AllTrue, wasm.OpcodeVecI32x4AllTrue, wasm.OpcodeVecI64x2AllTrue, + wasm.OpcodeVecV128AnyTrue, + wasm.OpcodeVecI8x16BitMask, wasm.OpcodeVecI16x8BitMask, wasm.OpcodeVecI32x4BitMask, wasm.OpcodeVecI64x2BitMask: + return signature_V128_I32, nil + case wasm.OpcodeVecV128Not, wasm.OpcodeVecI8x16Neg, wasm.OpcodeVecI16x8Neg, wasm.OpcodeVecI32x4Neg, wasm.OpcodeVecI64x2Neg, + wasm.OpcodeVecF32x4Neg, wasm.OpcodeVecF64x2Neg, wasm.OpcodeVecF32x4Sqrt, wasm.OpcodeVecF64x2Sqrt, + wasm.OpcodeVecI8x16Abs, wasm.OpcodeVecI8x16Popcnt, wasm.OpcodeVecI16x8Abs, wasm.OpcodeVecI32x4Abs, wasm.OpcodeVecI64x2Abs, + wasm.OpcodeVecF32x4Abs, wasm.OpcodeVecF64x2Abs, + wasm.OpcodeVecF32x4Ceil, wasm.OpcodeVecF32x4Floor, wasm.OpcodeVecF32x4Trunc, wasm.OpcodeVecF32x4Nearest, + wasm.OpcodeVecF64x2Ceil, wasm.OpcodeVecF64x2Floor, wasm.OpcodeVecF64x2Trunc, wasm.OpcodeVecF64x2Nearest, + wasm.OpcodeVecI16x8ExtendLowI8x16S, wasm.OpcodeVecI16x8ExtendHighI8x16S, wasm.OpcodeVecI16x8ExtendLowI8x16U, wasm.OpcodeVecI16x8ExtendHighI8x16U, + wasm.OpcodeVecI32x4ExtendLowI16x8S, wasm.OpcodeVecI32x4ExtendHighI16x8S, wasm.OpcodeVecI32x4ExtendLowI16x8U, wasm.OpcodeVecI32x4ExtendHighI16x8U, + wasm.OpcodeVecI64x2ExtendLowI32x4S, wasm.OpcodeVecI64x2ExtendHighI32x4S, wasm.OpcodeVecI64x2ExtendLowI32x4U, wasm.OpcodeVecI64x2ExtendHighI32x4U, + wasm.OpcodeVecI16x8ExtaddPairwiseI8x16S, wasm.OpcodeVecI16x8ExtaddPairwiseI8x16U, wasm.OpcodeVecI32x4ExtaddPairwiseI16x8S, wasm.OpcodeVecI32x4ExtaddPairwiseI16x8U, + wasm.OpcodeVecF64x2PromoteLowF32x4Zero, wasm.OpcodeVecF32x4DemoteF64x2Zero, + wasm.OpcodeVecF32x4ConvertI32x4S, wasm.OpcodeVecF32x4ConvertI32x4U, + wasm.OpcodeVecF64x2ConvertLowI32x4S, wasm.OpcodeVecF64x2ConvertLowI32x4U, + wasm.OpcodeVecI32x4TruncSatF32x4S, wasm.OpcodeVecI32x4TruncSatF32x4U, + wasm.OpcodeVecI32x4TruncSatF64x2SZero, wasm.OpcodeVecI32x4TruncSatF64x2UZero: + return signature_V128_V128, nil + case wasm.OpcodeVecV128Bitselect: + return signature_V128V128V128_V32, nil + case wasm.OpcodeVecI8x16Eq, wasm.OpcodeVecI8x16Ne, wasm.OpcodeVecI8x16LtS, wasm.OpcodeVecI8x16LtU, wasm.OpcodeVecI8x16GtS, + wasm.OpcodeVecI8x16GtU, wasm.OpcodeVecI8x16LeS, wasm.OpcodeVecI8x16LeU, wasm.OpcodeVecI8x16GeS, wasm.OpcodeVecI8x16GeU, + wasm.OpcodeVecI16x8Eq, wasm.OpcodeVecI16x8Ne, wasm.OpcodeVecI16x8LtS, wasm.OpcodeVecI16x8LtU, wasm.OpcodeVecI16x8GtS, + wasm.OpcodeVecI16x8GtU, wasm.OpcodeVecI16x8LeS, wasm.OpcodeVecI16x8LeU, wasm.OpcodeVecI16x8GeS, wasm.OpcodeVecI16x8GeU, + wasm.OpcodeVecI32x4Eq, wasm.OpcodeVecI32x4Ne, wasm.OpcodeVecI32x4LtS, wasm.OpcodeVecI32x4LtU, wasm.OpcodeVecI32x4GtS, + wasm.OpcodeVecI32x4GtU, wasm.OpcodeVecI32x4LeS, wasm.OpcodeVecI32x4LeU, wasm.OpcodeVecI32x4GeS, wasm.OpcodeVecI32x4GeU, + wasm.OpcodeVecI64x2Eq, wasm.OpcodeVecI64x2Ne, wasm.OpcodeVecI64x2LtS, wasm.OpcodeVecI64x2GtS, wasm.OpcodeVecI64x2LeS, + wasm.OpcodeVecI64x2GeS, wasm.OpcodeVecF32x4Eq, wasm.OpcodeVecF32x4Ne, wasm.OpcodeVecF32x4Lt, wasm.OpcodeVecF32x4Gt, + wasm.OpcodeVecF32x4Le, wasm.OpcodeVecF32x4Ge, wasm.OpcodeVecF64x2Eq, wasm.OpcodeVecF64x2Ne, wasm.OpcodeVecF64x2Lt, + wasm.OpcodeVecF64x2Gt, wasm.OpcodeVecF64x2Le, wasm.OpcodeVecF64x2Ge, + wasm.OpcodeVecI8x16Add, wasm.OpcodeVecI8x16AddSatS, wasm.OpcodeVecI8x16AddSatU, wasm.OpcodeVecI8x16Sub, + wasm.OpcodeVecI8x16SubSatS, wasm.OpcodeVecI8x16SubSatU, + wasm.OpcodeVecI16x8Add, wasm.OpcodeVecI16x8AddSatS, wasm.OpcodeVecI16x8AddSatU, wasm.OpcodeVecI16x8Sub, + wasm.OpcodeVecI16x8SubSatS, wasm.OpcodeVecI16x8SubSatU, wasm.OpcodeVecI16x8Mul, + wasm.OpcodeVecI32x4Add, wasm.OpcodeVecI32x4Sub, wasm.OpcodeVecI32x4Mul, + wasm.OpcodeVecI64x2Add, wasm.OpcodeVecI64x2Sub, wasm.OpcodeVecI64x2Mul, + wasm.OpcodeVecF32x4Add, wasm.OpcodeVecF32x4Sub, wasm.OpcodeVecF32x4Mul, wasm.OpcodeVecF32x4Div, + wasm.OpcodeVecF64x2Add, wasm.OpcodeVecF64x2Sub, wasm.OpcodeVecF64x2Mul, wasm.OpcodeVecF64x2Div, + wasm.OpcodeVecI8x16MinS, wasm.OpcodeVecI8x16MinU, wasm.OpcodeVecI8x16MaxS, wasm.OpcodeVecI8x16MaxU, wasm.OpcodeVecI8x16AvgrU, + wasm.OpcodeVecI16x8MinS, wasm.OpcodeVecI16x8MinU, wasm.OpcodeVecI16x8MaxS, wasm.OpcodeVecI16x8MaxU, wasm.OpcodeVecI16x8AvgrU, + wasm.OpcodeVecI32x4MinS, wasm.OpcodeVecI32x4MinU, wasm.OpcodeVecI32x4MaxS, wasm.OpcodeVecI32x4MaxU, + wasm.OpcodeVecF32x4Min, wasm.OpcodeVecF32x4Max, wasm.OpcodeVecF64x2Min, wasm.OpcodeVecF64x2Max, + wasm.OpcodeVecF32x4Pmin, wasm.OpcodeVecF32x4Pmax, wasm.OpcodeVecF64x2Pmin, wasm.OpcodeVecF64x2Pmax, + wasm.OpcodeVecI16x8Q15mulrSatS, + wasm.OpcodeVecI16x8ExtMulLowI8x16S, wasm.OpcodeVecI16x8ExtMulHighI8x16S, wasm.OpcodeVecI16x8ExtMulLowI8x16U, wasm.OpcodeVecI16x8ExtMulHighI8x16U, + wasm.OpcodeVecI32x4ExtMulLowI16x8S, wasm.OpcodeVecI32x4ExtMulHighI16x8S, wasm.OpcodeVecI32x4ExtMulLowI16x8U, wasm.OpcodeVecI32x4ExtMulHighI16x8U, + wasm.OpcodeVecI64x2ExtMulLowI32x4S, wasm.OpcodeVecI64x2ExtMulHighI32x4S, wasm.OpcodeVecI64x2ExtMulLowI32x4U, wasm.OpcodeVecI64x2ExtMulHighI32x4U, + wasm.OpcodeVecI32x4DotI16x8S, + wasm.OpcodeVecI8x16NarrowI16x8S, wasm.OpcodeVecI8x16NarrowI16x8U, wasm.OpcodeVecI16x8NarrowI32x4S, wasm.OpcodeVecI16x8NarrowI32x4U: + return signature_V128V128_V128, nil + default: + return nil, fmt.Errorf("unsupported vector instruction in interpreterir: %s", wasm.VectorInstructionName(vecOp)) + } + case wasm.OpcodeAtomicPrefix: + switch atomicOp := c.body[c.pc+1]; atomicOp { + case wasm.OpcodeAtomicMemoryNotify: + return signature_I32I32_I32, nil + case wasm.OpcodeAtomicMemoryWait32: + return signature_I32I32I64_I32, nil + case wasm.OpcodeAtomicMemoryWait64: + return signature_I32I64I64_I32, nil + case wasm.OpcodeAtomicFence: + return signature_None_None, nil + case wasm.OpcodeAtomicI32Load, wasm.OpcodeAtomicI32Load8U, wasm.OpcodeAtomicI32Load16U: + return signature_I32_I32, nil + case wasm.OpcodeAtomicI64Load, wasm.OpcodeAtomicI64Load8U, wasm.OpcodeAtomicI64Load16U, wasm.OpcodeAtomicI64Load32U: + return signature_I32_I64, nil + case wasm.OpcodeAtomicI32Store, wasm.OpcodeAtomicI32Store8, wasm.OpcodeAtomicI32Store16: + return signature_I32I32_None, nil + case wasm.OpcodeAtomicI64Store, wasm.OpcodeAtomicI64Store8, wasm.OpcodeAtomicI64Store16, wasm.OpcodeAtomicI64Store32: + return signature_I32I64_None, nil + case wasm.OpcodeAtomicI32RmwAdd, wasm.OpcodeAtomicI32RmwSub, wasm.OpcodeAtomicI32RmwAnd, wasm.OpcodeAtomicI32RmwOr, wasm.OpcodeAtomicI32RmwXor, wasm.OpcodeAtomicI32RmwXchg, + wasm.OpcodeAtomicI32Rmw8AddU, wasm.OpcodeAtomicI32Rmw8SubU, wasm.OpcodeAtomicI32Rmw8AndU, wasm.OpcodeAtomicI32Rmw8OrU, wasm.OpcodeAtomicI32Rmw8XorU, wasm.OpcodeAtomicI32Rmw8XchgU, + wasm.OpcodeAtomicI32Rmw16AddU, wasm.OpcodeAtomicI32Rmw16SubU, wasm.OpcodeAtomicI32Rmw16AndU, wasm.OpcodeAtomicI32Rmw16OrU, wasm.OpcodeAtomicI32Rmw16XorU, wasm.OpcodeAtomicI32Rmw16XchgU: + return signature_I32I32_I32, nil + case wasm.OpcodeAtomicI64RmwAdd, wasm.OpcodeAtomicI64RmwSub, wasm.OpcodeAtomicI64RmwAnd, wasm.OpcodeAtomicI64RmwOr, wasm.OpcodeAtomicI64RmwXor, wasm.OpcodeAtomicI64RmwXchg, + wasm.OpcodeAtomicI64Rmw8AddU, wasm.OpcodeAtomicI64Rmw8SubU, wasm.OpcodeAtomicI64Rmw8AndU, wasm.OpcodeAtomicI64Rmw8OrU, wasm.OpcodeAtomicI64Rmw8XorU, wasm.OpcodeAtomicI64Rmw8XchgU, + wasm.OpcodeAtomicI64Rmw16AddU, wasm.OpcodeAtomicI64Rmw16SubU, wasm.OpcodeAtomicI64Rmw16AndU, wasm.OpcodeAtomicI64Rmw16OrU, wasm.OpcodeAtomicI64Rmw16XorU, wasm.OpcodeAtomicI64Rmw16XchgU, + wasm.OpcodeAtomicI64Rmw32AddU, wasm.OpcodeAtomicI64Rmw32SubU, wasm.OpcodeAtomicI64Rmw32AndU, wasm.OpcodeAtomicI64Rmw32OrU, wasm.OpcodeAtomicI64Rmw32XorU, wasm.OpcodeAtomicI64Rmw32XchgU: + return signature_I32I64_I64, nil + case wasm.OpcodeAtomicI32RmwCmpxchg, wasm.OpcodeAtomicI32Rmw8CmpxchgU, wasm.OpcodeAtomicI32Rmw16CmpxchgU: + return signature_I32I32I32_I32, nil + case wasm.OpcodeAtomicI64RmwCmpxchg, wasm.OpcodeAtomicI64Rmw8CmpxchgU, wasm.OpcodeAtomicI64Rmw16CmpxchgU, wasm.OpcodeAtomicI64Rmw32CmpxchgU: + return signature_I32I64I64_I64, nil + default: + return nil, fmt.Errorf("unsupported atomic instruction in interpreterir: %s", wasm.AtomicInstructionName(atomicOp)) + } + default: + return nil, fmt.Errorf("unsupported instruction in interpreterir: 0x%x", op) + } +} + +// funcTypeToIRSignatures is the central cache for a module to get the *signature +// for function calls. +type funcTypeToIRSignatures struct { + directCalls []*signature + indirectCalls []*signature + wasmTypes []wasm.FunctionType +} + +// get returns the *signature for the direct or indirect function call against functions whose type is at `typeIndex`. +func (f *funcTypeToIRSignatures) get(typeIndex wasm.Index, indirect bool) *signature { + var sig *signature + if indirect { + sig = f.indirectCalls[typeIndex] + } else { + sig = f.directCalls[typeIndex] + } + if sig != nil { + return sig + } + + tp := &f.wasmTypes[typeIndex] + if indirect { + sig = &signature{ + in: make([]unsignedType, 0, len(tp.Params)+1), // +1 to reserve space for call indirect index. + out: make([]unsignedType, 0, len(tp.Results)), + } + } else { + sig = &signature{ + in: make([]unsignedType, 0, len(tp.Params)), + out: make([]unsignedType, 0, len(tp.Results)), + } + } + + for _, vt := range tp.Params { + sig.in = append(sig.in, wasmValueTypeTounsignedType(vt)) + } + for _, vt := range tp.Results { + sig.out = append(sig.out, wasmValueTypeTounsignedType(vt)) + } + + if indirect { + sig.in = append(sig.in, unsignedTypeI32) + f.indirectCalls[typeIndex] = sig + } else { + f.directCalls[typeIndex] = sig + } + return sig +} + +func wasmValueTypeTounsignedType(vt wasm.ValueType) unsignedType { + switch vt { + case wasm.ValueTypeI32: + return unsignedTypeI32 + case wasm.ValueTypeI64, + // From interpreterir layer, ref type values are opaque 64-bit pointers. + wasm.ValueTypeExternref, wasm.ValueTypeFuncref: + return unsignedTypeI64 + case wasm.ValueTypeF32: + return unsignedTypeF32 + case wasm.ValueTypeF64: + return unsignedTypeF64 + case wasm.ValueTypeV128: + return unsignedTypeV128 + } + panic("unreachable") +} + +func wasmValueTypeToUnsignedOutSignature(vt wasm.ValueType) *signature { + switch vt { + case wasm.ValueTypeI32: + return signature_None_I32 + case wasm.ValueTypeI64, + // From interpreterir layer, ref type values are opaque 64-bit pointers. + wasm.ValueTypeExternref, wasm.ValueTypeFuncref: + return signature_None_I64 + case wasm.ValueTypeF32: + return signature_None_F32 + case wasm.ValueTypeF64: + return signature_None_F64 + case wasm.ValueTypeV128: + return signature_None_V128 + } + panic("unreachable") +} + +func wasmValueTypeToUnsignedInSignature(vt wasm.ValueType) *signature { + switch vt { + case wasm.ValueTypeI32: + return signature_I32_None + case wasm.ValueTypeI64, + // From interpreterir layer, ref type values are opaque 64-bit pointers. + wasm.ValueTypeExternref, wasm.ValueTypeFuncref: + return signature_I64_None + case wasm.ValueTypeF32: + return signature_F32_None + case wasm.ValueTypeF64: + return signature_F64_None + case wasm.ValueTypeV128: + return signature_V128_None + } + panic("unreachable") +} + +func wasmValueTypeToUnsignedInOutSignature(vt wasm.ValueType) *signature { + switch vt { + case wasm.ValueTypeI32: + return signature_I32_I32 + case wasm.ValueTypeI64, + // At interpreterir layer, ref type values are opaque 64-bit pointers. + wasm.ValueTypeExternref, wasm.ValueTypeFuncref: + return signature_I64_I64 + case wasm.ValueTypeF32: + return signature_F32_F32 + case wasm.ValueTypeF64: + return signature_F64_F64 + case wasm.ValueTypeV128: + return signature_V128_V128 + } + panic("unreachable") +} |