diff options
Diffstat (limited to 'vendor/github.com/bytedance/sonic/internal/jit/backend.go')
-rw-r--r-- | vendor/github.com/bytedance/sonic/internal/jit/backend.go | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/vendor/github.com/bytedance/sonic/internal/jit/backend.go b/vendor/github.com/bytedance/sonic/internal/jit/backend.go deleted file mode 100644 index 75e180415..000000000 --- a/vendor/github.com/bytedance/sonic/internal/jit/backend.go +++ /dev/null @@ -1,120 +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 jit - -import ( - `fmt` - `sync` - _ `unsafe` - - `github.com/twitchyliquid64/golang-asm/asm/arch` - `github.com/twitchyliquid64/golang-asm/obj` - `github.com/twitchyliquid64/golang-asm/objabi` -) - -type Backend struct { - Ctxt *obj.Link - Arch *arch.Arch - Head *obj.Prog - Tail *obj.Prog - Prog []*obj.Prog -} - -var ( - _progPool sync.Pool -) - -//go:nosplit -//go:linkname throw runtime.throw -func throw(_ string) - -func newProg() *obj.Prog { - if val := _progPool.Get(); val == nil { - return new(obj.Prog) - } else { - return remProg(val.(*obj.Prog)) - } -} - -func remProg(p *obj.Prog) *obj.Prog { - *p = obj.Prog{} - return p -} - -func newBackend(name string) (ret *Backend) { - ret = new(Backend) - ret.Arch = arch.Set(name) - ret.Ctxt = newLinkContext(ret.Arch.LinkArch) - ret.Arch.Init(ret.Ctxt) - return -} - -func newLinkContext(arch *obj.LinkArch) (ret *obj.Link) { - ret = obj.Linknew(arch) - ret.Headtype = objabi.Hlinux - ret.DiagFunc = diagLinkContext - return -} - -func diagLinkContext(str string, args ...interface{}) { - throw(fmt.Sprintf(str, args...)) -} - -func (self *Backend) New() (ret *obj.Prog) { - ret = newProg() - ret.Ctxt = self.Ctxt - self.Prog = append(self.Prog, ret) - return -} - -func (self *Backend) Append(p *obj.Prog) { - if self.Head == nil { - self.Head = p - self.Tail = p - } else { - self.Tail.Link = p - self.Tail = p - } -} - -func (self *Backend) Release() { - self.Arch = nil - self.Ctxt = nil - - /* return all the progs into pool */ - for _, p := range self.Prog { - _progPool.Put(p) - } - - /* clear all the references */ - self.Head = nil - self.Tail = nil - self.Prog = nil -} - -func (self *Backend) Assemble() []byte { - var sym obj.LSym - var fnv obj.FuncInfo - - /* construct the function */ - sym.Func = &fnv - fnv.Text = self.Head - - /* call the assembler */ - self.Arch.Assemble(self.Ctxt, &sym, self.New) - return sym.P -} |