diff options
Diffstat (limited to 'vendor/github.com/bytedance/sonic/internal/loader/funcdata.go')
| -rw-r--r-- | vendor/github.com/bytedance/sonic/internal/loader/funcdata.go | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/vendor/github.com/bytedance/sonic/internal/loader/funcdata.go b/vendor/github.com/bytedance/sonic/internal/loader/funcdata.go deleted file mode 100644 index 59a3cb349..000000000 --- a/vendor/github.com/bytedance/sonic/internal/loader/funcdata.go +++ /dev/null @@ -1,124 +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 ( - `reflect` - `sync` - `unsafe` - - `github.com/bytedance/sonic/internal/rt` -) - -//go:linkname lastmoduledatap runtime.lastmoduledatap -//goland:noinspection GoUnusedGlobalVariable -var lastmoduledatap *_ModuleData - -//go:linkname moduledataverify1 runtime.moduledataverify1 -func moduledataverify1(_ *_ModuleData) - -// PCDATA and FUNCDATA table indexes. -// -// See funcdata.h and $GROOT/src/cmd/internal/objabi/funcdata.go. -const ( - _FUNCDATA_ArgsPointerMaps = 0 - _FUNCDATA_LocalsPointerMaps = 1 -) - -type funcInfo struct { - *_Func - datap *_ModuleData -} - -//go:linkname findfunc runtime.findfunc -func findfunc(pc uintptr) funcInfo - -//go:linkname funcdata runtime.funcdata -func funcdata(f funcInfo, i uint8) unsafe.Pointer - -var ( - modLock sync.Mutex - modList []*_ModuleData -) - -var emptyByte byte - -func encodeVariant(v int) []byte { - var u int - var r []byte - - /* split every 7 bits */ - for v > 127 { - u = v & 0x7f - v = v >> 7 - r = append(r, byte(u) | 0x80) - } - - /* check for last one */ - if v == 0 { - return r - } - - /* add the last one */ - r = append(r, byte(v)) - return r -} - -func registerModule(mod *_ModuleData) { - modLock.Lock() - modList = append(modList, mod) - lastmoduledatap.next = mod - lastmoduledatap = mod - modLock.Unlock() -} - -func stackMap(f interface{}) (args uintptr, locals uintptr) { - fv := reflect.ValueOf(f) - if fv.Kind() != reflect.Func { - panic("f must be reflect.Func kind!") - } - fi := findfunc(fv.Pointer()) - return uintptr(funcdata(fi, uint8(_FUNCDATA_ArgsPointerMaps))), uintptr(funcdata(fi, uint8(_FUNCDATA_LocalsPointerMaps))) -} - -var moduleCache = struct{ - m map[*_ModuleData][]byte - l sync.Mutex -}{ - m : make(map[*_ModuleData][]byte), -} - -func cacheStackmap(argPtrs []bool, localPtrs []bool, mod *_ModuleData) (argptrs uintptr, localptrs uintptr) { - as := rt.StackMapBuilder{} - for _, b := range argPtrs { - as.AddField(b) - } - ab, _ := as.Build().MarshalBinary() - ls := rt.StackMapBuilder{} - for _, b := range localPtrs { - ls.AddField(b) - } - lb, _ := ls.Build().MarshalBinary() - cache := make([]byte, len(ab) + len(lb)) - copy(cache, ab) - copy(cache[len(ab):], lb) - moduleCache.l.Lock() - moduleCache.m[mod] = cache - moduleCache.l.Unlock() - return uintptr(rt.IndexByte(cache, 0)), uintptr(rt.IndexByte(cache, len(ab))) - -}
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