diff options
Diffstat (limited to 'vendor/github.com/bytedance/sonic/loader/loader_latest.go')
-rw-r--r-- | vendor/github.com/bytedance/sonic/loader/loader_latest.go | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/vendor/github.com/bytedance/sonic/loader/loader_latest.go b/vendor/github.com/bytedance/sonic/loader/loader_latest.go deleted file mode 100644 index f2c78989d..000000000 --- a/vendor/github.com/bytedance/sonic/loader/loader_latest.go +++ /dev/null @@ -1,111 +0,0 @@ - -/* - * Copyright 2021 ByteDance Inc. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package loader - -import ( - `github.com/bytedance/sonic/loader/internal/rt` -) - -// LoadFuncs loads only one function as module, and returns the function pointer -// - text: machine code -// - funcName: function name -// - frameSize: stack frame size. -// - argSize: argument total size (in bytes) -// - argPtrs: indicates if a slot (8 Bytes) of arguments memory stores pointer, from low to high -// - localPtrs: indicates if a slot (8 Bytes) of local variants memory stores pointer, from low to high -// -// WARN: -// - the function MUST has fixed SP offset equaling to this, otherwise it go.gentraceback will fail -// - the function MUST has only one stack map for all arguments and local variants -func (self Loader) LoadOne(text []byte, funcName string, frameSize int, argSize int, argPtrs []bool, localPtrs []bool) Function { - size := uint32(len(text)) - - fn := Func{ - Name: funcName, - TextSize: size, - ArgsSize: int32(argSize), - } - - // NOTICE: suppose the function has fixed SP offset equaling to frameSize, thus make only one pcsp pair - fn.Pcsp = &Pcdata{ - {PC: size, Val: int32(frameSize)}, - } - - if self.NoPreempt { - fn.PcUnsafePoint = &Pcdata{ - {PC: size, Val: PCDATA_UnsafePointUnsafe}, - } - } else { - fn.PcUnsafePoint = &Pcdata{ - {PC: size, Val: PCDATA_UnsafePointSafe}, - } - } - - // NOTICE: suppose the function has only one stack map at index 0 - fn.PcStackMapIndex = &Pcdata{ - {PC: size, Val: 0}, - } - - if argPtrs != nil { - args := rt.StackMapBuilder{} - for _, b := range argPtrs { - args.AddField(b) - } - fn.ArgsPointerMaps = args.Build() - } - - if localPtrs != nil { - locals := rt.StackMapBuilder{} - for _, b := range localPtrs { - locals.AddField(b) - } - fn.LocalsPointerMaps = locals.Build() - } - - out := Load(text, []Func{fn}, self.Name + funcName, []string{self.File}) - return out[0] -} - -// Load loads given machine codes and corresponding function information into go moduledata -// and returns runnable function pointer -// WARN: this API is experimental, use it carefully -func Load(text []byte, funcs []Func, modulename string, filenames []string) (out []Function) { - ids := make([]string, len(funcs)) - for i, f := range funcs { - ids[i] = f.Name - } - // generate module data and allocate memory address - mod := makeModuledata(modulename, filenames, &funcs, text) - - // verify and register the new module - moduledataverify1(mod) - registerModule(mod) - - // - // encapsulate function address - out = make([]Function, len(funcs)) - for i, s := range ids { - for _, f := range funcs { - if f.Name == s { - m := uintptr(mod.text + uintptr(f.EntryOff)) - out[i] = Function(&m) - } - } - } - return -} |