120 lines
3.7 KiB
Go
120 lines
3.7 KiB
Go
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//go:build go1.21 && !go1.22
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// +build go1.21,!go1.22
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/*
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* Copyright 2021 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package loader
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import (
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`unsafe`
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`github.com/bytedance/sonic/internal/rt`
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)
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const (
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_Magic uint32 = 0xFFFFFFF1
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)
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type moduledata struct {
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pcHeader *pcHeader
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funcnametab []byte
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cutab []uint32
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filetab []byte
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pctab []byte
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pclntable []byte
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ftab []funcTab
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findfunctab uintptr
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minpc, maxpc uintptr // first func address, last func address + last func size
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text, etext uintptr // start/end of text, (etext-text) must be greater than MIN_FUNC
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noptrdata, enoptrdata uintptr
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data, edata uintptr
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bss, ebss uintptr
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noptrbss, enoptrbss uintptr
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covctrs, ecovctrs uintptr
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end, gcdata, gcbss uintptr
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types, etypes uintptr
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rodata uintptr
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gofunc uintptr // go.func.* is actual funcinfo object in image
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textsectmap []textSection // see runtime/symtab.go: textAddr()
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typelinks []int32 // offsets from types
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itablinks []*rt.GoItab
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ptab []ptabEntry
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pluginpath string
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pkghashes []modulehash
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// This slice records the initializing tasks that need to be
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// done to start up the program. It is built by the linker.
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inittasks []unsafe.Pointer
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modulename string
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modulehashes []modulehash
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hasmain uint8 // 1 if module contains the main function, 0 otherwise
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gcdatamask, gcbssmask bitVector
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typemap map[int32]*rt.GoType // offset to *_rtype in previous module
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bad bool // module failed to load and should be ignored
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next *moduledata
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}
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type _func struct {
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entryOff uint32 // start pc, as offset from moduledata.text/pcHeader.textStart
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nameOff int32 // function name, as index into moduledata.funcnametab.
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args int32 // in/out args size
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deferreturn uint32 // offset of start of a deferreturn call instruction from entry, if any.
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pcsp uint32
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pcfile uint32
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pcln uint32
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npcdata uint32
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cuOffset uint32 // runtime.cutab offset of this function's CU
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startLine int32 // line number of start of function (func keyword/TEXT directive)
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funcID uint8 // set for certain special runtime functions
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flag uint8
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_ [1]byte // pad
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nfuncdata uint8 //
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// The end of the struct is followed immediately by two variable-length
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// arrays that reference the pcdata and funcdata locations for this
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// function.
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// pcdata contains the offset into moduledata.pctab for the start of
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// that index's table. e.g.,
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// &moduledata.pctab[_func.pcdata[_PCDATA_UnsafePoint]] is the start of
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// the unsafe point table.
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//
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// An offset of 0 indicates that there is no table.
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//
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// pcdata [npcdata]uint32
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// funcdata contains the offset past moduledata.gofunc which contains a
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// pointer to that index's funcdata. e.g.,
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// *(moduledata.gofunc + _func.funcdata[_FUNCDATA_ArgsPointerMaps]) is
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// the argument pointer map.
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//
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// An offset of ^uint32(0) indicates that there is no entry.
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//
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// funcdata [nfuncdata]uint32
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}
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