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How to use mov32 method of x86 Package
Best Syzkaller code snippet using x86.mov32
pseudo.go
Source:pseudo.go 
...13 Pseudo: true,14 generator: func(cfg *iset.Config, r *rand.Rand) []byte {15 gen := makeGen(cfg, r)16 msr := msrs[r.Intn(len(msrs))]17 gen.mov32(regECX, msr)18 gen.byte(0x0f, 0x32) // rdmsr19 return gen.text20 },21 },22 {23 Name: "PSEUDO_WRMSR",24 Mode: 1<<iset.ModeLast - 1,25 Priv: true,26 Pseudo: true,27 generator: func(cfg *iset.Config, r *rand.Rand) []byte {28 gen := makeGen(cfg, r)29 msr := msrs[r.Intn(len(msrs))]30 v := iset.GenerateInt(cfg, r, 8)31 gen.mov32(regECX, msr)32 gen.mov32(regEAX, uint32(v>>0))33 gen.mov32(regEDX, uint32(v>>32))34 gen.byte(0x0f, 0x30) // wrmsr35 return gen.text36 },37 },38 {39 Name: "PSEUDO_PCI_READ",40 Mode: 1<<iset.ModeLast - 1,41 Priv: true,42 Pseudo: true,43 generator: func(cfg *iset.Config, r *rand.Rand) []byte {44 gen := makeGen(cfg, r)45 addr, port, size := pciAddrPort(r)46 gen.out32(0xcf8, addr)47 gen.in(port, size)48 return gen.text49 },50 },51 {52 Name: "PSEUDO_PCI_WRITE",53 Mode: 1<<iset.ModeLast - 1,54 Priv: true,55 Pseudo: true,56 generator: func(cfg *iset.Config, r *rand.Rand) []byte {57 gen := makeGen(cfg, r)58 addr, port, size := pciAddrPort(r)59 val := iset.GenerateInt(cfg, r, 4)60 gen.out32(0xcf8, addr)61 gen.out(port, uint32(val), size)62 return gen.text63 },64 },65 {66 Name: "PSEUDO_PORT_READ",67 Mode: 1<<iset.ModeLast - 1,68 Priv: true,69 Pseudo: true,70 generator: func(cfg *iset.Config, r *rand.Rand) []byte {71 gen := makeGen(cfg, r)72 port := ports[r.Intn(len(ports))]73 gen.in(port, r.Intn(3))74 return gen.text75 },76 },77 {78 Name: "PSEUDO_PORT_WRITE",79 Mode: 1<<iset.ModeLast - 1,80 Priv: true,81 Pseudo: true,82 generator: func(cfg *iset.Config, r *rand.Rand) []byte {83 gen := makeGen(cfg, r)84 port := ports[r.Intn(len(ports))]85 val := iset.GenerateInt(cfg, r, 4)86 gen.out(port, uint32(val), r.Intn(3))87 return gen.text88 },89 },90 {91 Name: "PSEUDO_XOR_CR",92 Mode: 1<<iset.ModeLast - 1,93 Priv: true,94 Pseudo: true,95 generator: func(cfg *iset.Config, r *rand.Rand) []byte {96 gen := makeGen(cfg, r)97 cr := controlRegisters[r.Intn(len(controlRegisters))]98 var v uint3299 if cr == 8 {100 v = uint32(r.Intn(15) + 1)101 } else {102 bit := controlRegistersBits[cr][r.Intn(len(controlRegistersBits[cr]))]103 v = 1 << bit104 }105 gen.readCR(cr)106 gen.xor32(regEAX, v)107 gen.writeCR(cr)108 return gen.text109 },110 },111 {112 Name: "PSEUDO_XOR_EFER",113 Mode: 1<<iset.ModeLast - 1,114 Priv: true,115 Pseudo: true,116 generator: func(cfg *iset.Config, r *rand.Rand) []byte {117 gen := makeGen(cfg, r)118 gen.mov32(regECX, eferMSR)119 gen.byte(0x0f, 0x32) // rdmsr120 bit := eferBits[r.Intn(len(eferBits))]121 gen.xor32(regEAX, 1<<bit)122 gen.byte(0x0f, 0x30) // wrmsr123 return gen.text124 },125 },126 {127 Name: "PSEUDO_SET_BREAK",128 Mode: 1<<iset.ModeLast - 1,129 Priv: true,130 Pseudo: true,131 generator: func(cfg *iset.Config, r *rand.Rand) []byte {132 gen := makeGen(cfg, r)133 br := uint8(r.Intn(4))134 loc := uint32(r.Intn(4))135 typ := uint32(r.Intn(16))136 addr := iset.GenerateInt(cfg, r, 8)137 if cfg.Mode == iset.ModeLong64 {138 gen.mov64(regRAX, addr)139 } else {140 gen.mov32(regEAX, uint32(addr))141 }142 gen.writeDR(br)143 gen.readDR(7)144 gen.xor32(regEAX, loc<<(br*2)|typ<<(16+br*4))145 gen.writeDR(7)146 return gen.text147 },148 },149 {150 Name: "PSEUDO_LOAD_SEG",151 Mode: 1<<iset.ModeLast - 1,152 Priv: true,153 Pseudo: true,154 generator: func(cfg *iset.Config, r *rand.Rand) []byte {155 gen := makeGen(cfg, r)156 sel := randSelector(r)157 if cfg.Mode == iset.ModeReal16 {158 sel = uint16(iset.GenerateInt(cfg, r, 8)) >> 4159 }160 reg := uint8(r.Intn(6))161 gen.mov16(regAX, sel)162 gen.byte(0x8e, 0xc0|(reg<<3)) // MOV %ax, %seg163 return gen.text164 },165 },166 {167 Name: "PSEUDO_FAR_JMP",168 Mode: 1<<iset.ModeLong64 | 1<<iset.ModeProt32 | 1<<iset.ModeProt16,169 Priv: true,170 Pseudo: true,171 generator: func(cfg *iset.Config, r *rand.Rand) []byte {172 gen := makeGen(cfg, r)173 sel := randSelector(r)174 off := iset.GenerateInt(cfg, r, 4)175 if cfg.Mode == iset.ModeLong64 {176 gen.mov32toSPaddr(uint32(sel), 0)177 gen.mov32toSPaddr(uint32(off), 2)178 if r.Intn(2) == 0 {179 gen.byte(0xff, 0x2c, 0x24) // ljmp (%rsp)180 } else {181 gen.byte(0xff, 0x1c, 0x24) // lcall (%rsp)182 }183 } else {184 if r.Intn(2) == 0 {185 gen.byte(0xea) // ljmp $imm16, $imm16/32186 } else {187 gen.byte(0x9a) // lcall $imm16, $imm16/32188 }189 if cfg.Mode == iset.ModeProt16 {190 gen.imm16(uint16(off))191 } else {192 gen.imm32(uint32(off))193 }194 gen.imm16(sel)195 }196 return gen.text197 },198 },199 {200 Name: "PSEUDO_LTR_LLDT",201 Mode: 1<<iset.ModeLong64 | 1<<iset.ModeProt32 | 1<<iset.ModeProt16,202 Priv: true,203 Pseudo: true,204 generator: func(cfg *iset.Config, r *rand.Rand) []byte {205 gen := makeGen(cfg, r)206 sel := randSelector(r)207 gen.mov16(regAX, sel)208 if r.Intn(2) == 0 {209 gen.byte(0x0f, 0x00, 0xd8) // ltr %ax210 } else {211 gen.byte(0x0f, 0x00, 0xd0) // lldt %ax212 }213 return gen.text214 },215 },216 {217 Name: "PSEUDO_LGIDT",218 Mode: 1<<iset.ModeLong64 | 1<<iset.ModeProt32 | 1<<iset.ModeProt16,219 Priv: true,220 Pseudo: true,221 generator: func(cfg *iset.Config, r *rand.Rand) []byte {222 gen := makeGen(cfg, r)223 limit := uint32(iset.GenerateInt(cfg, r, 2))224 base := uint32(iset.GenerateInt(cfg, r, 4))225 gen.mov32toSPaddr(limit, 0)226 gen.mov32toSPaddr(base, 2)227 gen.mov32toSPaddr(0, 6)228 gen.addr32()229 if r.Intn(2) == 0 {230 gen.byte(0x0f, 0x01, 0x14, 0x24) // lgdt (%rsp)231 } else {232 gen.byte(0x0f, 0x01, 0x1c, 0x24) // lidt (%rsp)233 }234 return gen.text235 },236 },237 {238 Name: "PSEUDO_HYPERCALL",239 Mode: 1<<iset.ModeLong64 | 1<<iset.ModeProt32 | 1<<iset.ModeProt16,240 Priv: true,241 Pseudo: true,242 generator: func(cfg *iset.Config, r *rand.Rand) []byte {243 gen := makeGen(cfg, r)244 switch r.Intn(2) {245 case 0:246 gen.mov32(regEAX, 1) // KVM_HC_VAPIC_POLL_IRQ247 case 1:248 gen.mov32(regEAX, 5) // KVM_HC_KICK_CPU249 gen.mov32(regECX, uint32(iset.GenerateInt(cfg, r, 4))) // APIC ID250 default:251 panic("bad")252 }253 if r.Intn(2) == 0 {254 gen.byte(0x0f, 0x01, 0xd9) // vmmcall255 } else {256 gen.byte(0x0f, 0x01, 0xc1) // vmcall257 }258 return gen.text259 },260 },261}262const (263 regAL = iota264 regAX265 regEAX266 regRAX267 regCL268 regCX269 regECX270 regRCX271 regDL272 regDX273 regEDX274 regRDX275)276type generator struct {277 mode iset.Mode278 r *rand.Rand279 text []byte280}281func makeGen(cfg *iset.Config, r *rand.Rand) *generator {282 return &generator{283 mode: cfg.Mode,284 r: r,285 }286}287func (gen *generator) byte(v ...uint8) {288 gen.text = append(gen.text, v...)289}290func (gen *generator) imm16(v uint16) {291 gen.byte(byte(v>>0), byte(v>>8))292}293func (gen *generator) imm32(v uint32) {294 gen.byte(byte(v>>0), byte(v>>8), byte(v>>16), byte(v>>24))295}296func (gen *generator) imm64(v uint64) {297 gen.byte(byte(v>>0), byte(v>>8), byte(v>>16), byte(v>>24),298 byte(v>>32), byte(v>>40), byte(v>>48), byte(v>>56))299}300func (gen *generator) operand16() {301 switch gen.mode {302 case iset.ModeLong64, iset.ModeProt32:303 gen.byte(0x66)304 case iset.ModeProt16, iset.ModeReal16:305 default:306 panic("bad mode")307 }308}309func (gen *generator) operand32() {310 switch gen.mode {311 case iset.ModeLong64, iset.ModeProt32:312 case iset.ModeProt16, iset.ModeReal16:313 gen.byte(0x66)314 default:315 panic("bad mode")316 }317}318func (gen *generator) addr32() {319 switch gen.mode {320 case iset.ModeLong64, iset.ModeProt32:321 case iset.ModeProt16, iset.ModeReal16:322 gen.byte(0x67)323 default:324 panic("bad mode")325 }326}327func (gen *generator) mov8(reg int, v uint8) {328 switch reg {329 case regAL:330 gen.byte(0xb0)331 case regCL:332 gen.byte(0xb1)333 case regDL:334 gen.byte(0xb2)335 default:336 panic("unknown register")337 }338 gen.byte(v)339}340func (gen *generator) mov16(reg int, v uint16) {341 gen.operand16()342 switch reg {343 case regAX:344 gen.byte(0xb8)345 case regCX:346 gen.byte(0xb9)347 case regDX:348 gen.byte(0xba)349 default:350 panic("unknown register")351 }352 gen.imm16(v)353}354func (gen *generator) mov32(reg int, v uint32) {355 gen.operand32()356 switch reg {357 case regEAX:358 gen.byte(0xb8)359 case regECX:360 gen.byte(0xb9)361 case regEDX:362 gen.byte(0xba)363 default:364 panic("unknown register")365 }366 gen.imm32(v)367}368func (gen *generator) mov64(reg int, v uint64) {369 if gen.mode != iset.ModeLong64 {370 panic("bad mode")371 }372 gen.byte(0x48)373 switch reg {374 case regRAX:375 gen.byte(0xb8)376 case regRCX:377 gen.byte(0xb9)378 case regRDX:379 gen.byte(0xba)380 default:381 panic("unknown register")382 }383 gen.imm64(v)384}385// movl $v, off(%rsp).386func (gen *generator) mov32toSPaddr(v uint32, off uint8) {387 gen.addr32()388 gen.operand32()389 gen.byte(0xc7, 0x44, 0x24, off)390 gen.imm32(v)391}392func (gen *generator) xor32(reg int, v uint32) {393 gen.operand32()394 switch reg {395 case regEAX:396 gen.byte(0x35)397 default:398 panic("unknown register")399 }400 gen.imm32(v)401}402func (gen *generator) readCR(cr uint8) {403 if cr < 8 {404 // MOV %crN, %eax/%rax405 gen.byte(0x0f, 0x20, 0xc0|cr<<3)406 } else if cr < 16 {407 // MOV %crN, %eax/%rax408 gen.byte(0x44, 0x0f, 0x20, 0xc0|(cr-8)<<3)409 } else {410 panic("bad cr")411 }412}413func (gen *generator) writeCR(cr uint8) {414 if cr < 8 {415 // MOV %eax/%rax, %crN416 gen.byte(0x0f, 0x22, 0xc0|cr<<3)417 } else if cr < 16 {418 // MOV %eax/%rax, %crN419 gen.byte(0x44, 0x0f, 0x22, 0xc0|(cr-8)<<3)420 } else {421 panic("bad cr")422 }423}424func (gen *generator) readDR(dr uint8) {425 if dr >= 8 {426 panic("bad dr")427 }428 // MOV %drN, %eax/%rax429 gen.byte(0x0f, 0x21, 0xc0|dr<<3)430}431func (gen *generator) writeDR(dr uint8) {432 if dr >= 8 {433 panic("bad dr")434 }435 // MOV %eax/%rax, %drN436 gen.byte(0x0f, 0x23, 0xc0|dr<<3)437}438func (gen *generator) in8(port uint16) {439 gen.mov16(regDX, port)440 gen.byte(0xec) // in %al, %dx441}442func (gen *generator) in16(port uint16) {443 gen.mov16(regDX, port)444 gen.operand16()445 gen.byte(0xed) // in %ax, %dx446}447func (gen *generator) in32(port uint16) {448 gen.mov16(regDX, port)449 gen.operand32()450 gen.byte(0xed) // in %eax, %dx451}452func (gen *generator) in(port uint16, size int) {453 switch size {454 case 0:455 gen.in8(port)456 case 1:457 gen.in16(port)458 case 2:459 gen.in32(port)460 default:461 panic("bad size")462 }463}464func (gen *generator) out8(port uint16, v uint8) {465 gen.mov16(regDX, port)466 gen.mov8(regAL, v)467 gen.byte(0xee) // out %dx, %al468}469func (gen *generator) out16(port, v uint16) {470 gen.mov16(regDX, port)471 gen.mov16(regAX, v)472 gen.operand16()473 gen.byte(0xef) // out %dx, %ax474}475func (gen *generator) out32(port uint16, v uint32) {476 gen.mov16(regDX, port)477 gen.mov32(regEAX, v)478 gen.operand32()479 gen.byte(0xef) // out %dx, %eax480}481func (gen *generator) out(port uint16, v uint32, size int) {482 switch size {483 case 0:484 gen.out8(port, uint8(v))485 case 1:486 gen.out16(port, uint16(v))487 case 2:488 gen.out32(port, v)489 default:490 panic("bad size")491 }...
ldpe.go
Source:ldpe.go
1// Copyright 2010 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4// Package loadpe implements a PE/COFF file reader.5package loadpe6import (7 "cmd/internal/bio"8 "cmd/internal/objabi"9 "cmd/internal/sys"10 "cmd/oldlink/internal/loader"11 "cmd/oldlink/internal/sym"12 "debug/pe"13 "encoding/binary"14 "errors"15 "fmt"16 "io"17 "sort"18 "strings"19)20const (21 // TODO: the Microsoft doco says IMAGE_SYM_DTYPE_ARRAY is 3 (same with IMAGE_SYM_DTYPE_POINTER and IMAGE_SYM_DTYPE_FUNCTION)22 IMAGE_SYM_UNDEFINED = 023 IMAGE_SYM_ABSOLUTE = -124 IMAGE_SYM_DEBUG = -225 IMAGE_SYM_TYPE_NULL = 026 IMAGE_SYM_TYPE_VOID = 127 IMAGE_SYM_TYPE_CHAR = 228 IMAGE_SYM_TYPE_SHORT = 329 IMAGE_SYM_TYPE_INT = 430 IMAGE_SYM_TYPE_LONG = 531 IMAGE_SYM_TYPE_FLOAT = 632 IMAGE_SYM_TYPE_DOUBLE = 733 IMAGE_SYM_TYPE_STRUCT = 834 IMAGE_SYM_TYPE_UNION = 935 IMAGE_SYM_TYPE_ENUM = 1036 IMAGE_SYM_TYPE_MOE = 1137 IMAGE_SYM_TYPE_BYTE = 1238 IMAGE_SYM_TYPE_WORD = 1339 IMAGE_SYM_TYPE_UINT = 1440 IMAGE_SYM_TYPE_DWORD = 1541 IMAGE_SYM_TYPE_PCODE = 3276842 IMAGE_SYM_DTYPE_NULL = 043 IMAGE_SYM_DTYPE_POINTER = 0x1044 IMAGE_SYM_DTYPE_FUNCTION = 0x2045 IMAGE_SYM_DTYPE_ARRAY = 0x3046 IMAGE_SYM_CLASS_END_OF_FUNCTION = -147 IMAGE_SYM_CLASS_NULL = 048 IMAGE_SYM_CLASS_AUTOMATIC = 149 IMAGE_SYM_CLASS_EXTERNAL = 250 IMAGE_SYM_CLASS_STATIC = 351 IMAGE_SYM_CLASS_REGISTER = 452 IMAGE_SYM_CLASS_EXTERNAL_DEF = 553 IMAGE_SYM_CLASS_LABEL = 654 IMAGE_SYM_CLASS_UNDEFINED_LABEL = 755 IMAGE_SYM_CLASS_MEMBER_OF_STRUCT = 856 IMAGE_SYM_CLASS_ARGUMENT = 957 IMAGE_SYM_CLASS_STRUCT_TAG = 1058 IMAGE_SYM_CLASS_MEMBER_OF_UNION = 1159 IMAGE_SYM_CLASS_UNION_TAG = 1260 IMAGE_SYM_CLASS_TYPE_DEFINITION = 1361 IMAGE_SYM_CLASS_UNDEFINED_STATIC = 1462 IMAGE_SYM_CLASS_ENUM_TAG = 1563 IMAGE_SYM_CLASS_MEMBER_OF_ENUM = 1664 IMAGE_SYM_CLASS_REGISTER_PARAM = 1765 IMAGE_SYM_CLASS_BIT_FIELD = 1866 IMAGE_SYM_CLASS_FAR_EXTERNAL = 68 /* Not in PECOFF v8 spec */67 IMAGE_SYM_CLASS_BLOCK = 10068 IMAGE_SYM_CLASS_FUNCTION = 10169 IMAGE_SYM_CLASS_END_OF_STRUCT = 10270 IMAGE_SYM_CLASS_FILE = 10371 IMAGE_SYM_CLASS_SECTION = 10472 IMAGE_SYM_CLASS_WEAK_EXTERNAL = 10573 IMAGE_SYM_CLASS_CLR_TOKEN = 10774 IMAGE_REL_I386_ABSOLUTE = 0x000075 IMAGE_REL_I386_DIR16 = 0x000176 IMAGE_REL_I386_REL16 = 0x000277 IMAGE_REL_I386_DIR32 = 0x000678 IMAGE_REL_I386_DIR32NB = 0x000779 IMAGE_REL_I386_SEG12 = 0x000980 IMAGE_REL_I386_SECTION = 0x000A81 IMAGE_REL_I386_SECREL = 0x000B82 IMAGE_REL_I386_TOKEN = 0x000C83 IMAGE_REL_I386_SECREL7 = 0x000D84 IMAGE_REL_I386_REL32 = 0x001485 IMAGE_REL_AMD64_ABSOLUTE = 0x000086 IMAGE_REL_AMD64_ADDR64 = 0x000187 IMAGE_REL_AMD64_ADDR32 = 0x000288 IMAGE_REL_AMD64_ADDR32NB = 0x000389 IMAGE_REL_AMD64_REL32 = 0x000490 IMAGE_REL_AMD64_REL32_1 = 0x000591 IMAGE_REL_AMD64_REL32_2 = 0x000692 IMAGE_REL_AMD64_REL32_3 = 0x000793 IMAGE_REL_AMD64_REL32_4 = 0x000894 IMAGE_REL_AMD64_REL32_5 = 0x000995 IMAGE_REL_AMD64_SECTION = 0x000A96 IMAGE_REL_AMD64_SECREL = 0x000B97 IMAGE_REL_AMD64_SECREL7 = 0x000C98 IMAGE_REL_AMD64_TOKEN = 0x000D99 IMAGE_REL_AMD64_SREL32 = 0x000E100 IMAGE_REL_AMD64_PAIR = 0x000F101 IMAGE_REL_AMD64_SSPAN32 = 0x0010102 IMAGE_REL_ARM_ABSOLUTE = 0x0000103 IMAGE_REL_ARM_ADDR32 = 0x0001104 IMAGE_REL_ARM_ADDR32NB = 0x0002105 IMAGE_REL_ARM_BRANCH24 = 0x0003106 IMAGE_REL_ARM_BRANCH11 = 0x0004107 IMAGE_REL_ARM_SECTION = 0x000E108 IMAGE_REL_ARM_SECREL = 0x000F109 IMAGE_REL_ARM_MOV32 = 0x0010110 IMAGE_REL_THUMB_MOV32 = 0x0011111 IMAGE_REL_THUMB_BRANCH20 = 0x0012112 IMAGE_REL_THUMB_BRANCH24 = 0x0014113 IMAGE_REL_THUMB_BLX23 = 0x0015114 IMAGE_REL_ARM_PAIR = 0x0016115)116// TODO(crawshaw): de-duplicate these symbols with cmd/internal/ld, ideally in debug/pe.117const (118 IMAGE_SCN_CNT_CODE = 0x00000020119 IMAGE_SCN_CNT_INITIALIZED_DATA = 0x00000040120 IMAGE_SCN_CNT_UNINITIALIZED_DATA = 0x00000080121 IMAGE_SCN_MEM_DISCARDABLE = 0x02000000122 IMAGE_SCN_MEM_EXECUTE = 0x20000000123 IMAGE_SCN_MEM_READ = 0x40000000124 IMAGE_SCN_MEM_WRITE = 0x80000000125)126// TODO(brainman): maybe just add ReadAt method to bio.Reader instead of creating peBiobuf127// peBiobuf makes bio.Reader look like io.ReaderAt.128type peBiobuf bio.Reader129func (f *peBiobuf) ReadAt(p []byte, off int64) (int, error) {130 ret := ((*bio.Reader)(f)).MustSeek(off, 0)131 if ret < 0 {132 return 0, errors.New("fail to seek")133 }134 n, err := f.Read(p)135 if err != nil {136 return 0, err137 }138 return n, nil139}140func Load(l *loader.Loader, arch *sys.Arch, syms *sym.Symbols, input *bio.Reader, pkg string, length int64, pn string) (textp []*sym.Symbol, rsrc *sym.Symbol, err error) {141 lookup := func(name string, version int) *sym.Symbol {142 return l.LookupOrCreate(name, version, syms)143 }144 return load(arch, lookup, syms.IncVersion(), input, pkg, length, pn)145}146func LoadOld(arch *sys.Arch, syms *sym.Symbols, input *bio.Reader, pkg string, length int64, pn string) (textp []*sym.Symbol, rsrc *sym.Symbol, err error) {147 return load(arch, syms.Lookup, syms.IncVersion(), input, pkg, length, pn)148}149// load loads the PE file pn from input.150// Symbols are written into syms, and a slice of the text symbols is returned.151// If an .rsrc section is found, its symbol is returned as rsrc.152func load(arch *sys.Arch, lookup func(string, int) *sym.Symbol, localSymVersion int, input *bio.Reader, pkg string, length int64, pn string) (textp []*sym.Symbol, rsrc *sym.Symbol, err error) {153 sectsyms := make(map[*pe.Section]*sym.Symbol)154 sectdata := make(map[*pe.Section][]byte)155 // Some input files are archives containing multiple of156 // object files, and pe.NewFile seeks to the start of157 // input file and get confused. Create section reader158 // to stop pe.NewFile looking before current position.159 sr := io.NewSectionReader((*peBiobuf)(input), input.Offset(), 1<<63-1)160 // TODO: replace pe.NewFile with pe.Load (grep for "add Load function" in debug/pe for details)161 f, err := pe.NewFile(sr)162 if err != nil {163 return nil, nil, err164 }165 defer f.Close()166 // TODO return error if found .cormeta167 // create symbols for mapped sections168 for _, sect := range f.Sections {169 if sect.Characteristics&IMAGE_SCN_MEM_DISCARDABLE != 0 {170 continue171 }172 if sect.Characteristics&(IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_CNT_UNINITIALIZED_DATA) == 0 {173 // This has been seen for .idata sections, which we174 // want to ignore. See issues 5106 and 5273.175 continue176 }177 name := fmt.Sprintf("%s(%s)", pkg, sect.Name)178 s := lookup(name, localSymVersion)179 switch sect.Characteristics & (IMAGE_SCN_CNT_UNINITIALIZED_DATA | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE) {180 case IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ: //.rdata181 s.Type = sym.SRODATA182 case IMAGE_SCN_CNT_UNINITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE: //.bss183 s.Type = sym.SNOPTRBSS184 case IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE: //.data185 s.Type = sym.SNOPTRDATA186 case IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ: //.text187 s.Type = sym.STEXT188 default:189 return nil, nil, fmt.Errorf("unexpected flags %#06x for PE section %s", sect.Characteristics, sect.Name)190 }191 if s.Type != sym.SNOPTRBSS {192 data, err := sect.Data()193 if err != nil {194 return nil, nil, err195 }196 sectdata[sect] = data197 s.P = data198 }199 s.Size = int64(sect.Size)200 sectsyms[sect] = s201 if sect.Name == ".rsrc" {202 rsrc = s203 }204 }205 // load relocations206 for _, rsect := range f.Sections {207 if _, found := sectsyms[rsect]; !found {208 continue209 }210 if rsect.NumberOfRelocations == 0 {211 continue212 }213 if rsect.Characteristics&IMAGE_SCN_MEM_DISCARDABLE != 0 {214 continue215 }216 if rsect.Characteristics&(IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_CNT_UNINITIALIZED_DATA) == 0 {217 // This has been seen for .idata sections, which we218 // want to ignore. See issues 5106 and 5273.219 continue220 }221 rs := make([]sym.Reloc, rsect.NumberOfRelocations)222 for j, r := range rsect.Relocs {223 rp := &rs[j]224 if int(r.SymbolTableIndex) >= len(f.COFFSymbols) {225 return nil, nil, fmt.Errorf("relocation number %d symbol index idx=%d cannot be large then number of symbols %d", j, r.SymbolTableIndex, len(f.COFFSymbols))226 }227 pesym := &f.COFFSymbols[r.SymbolTableIndex]228 gosym, err := readpesym(arch, lookup, f, pesym, sectsyms, localSymVersion)229 if err != nil {230 return nil, nil, err231 }232 if gosym == nil {233 name, err := pesym.FullName(f.StringTable)234 if err != nil {235 name = string(pesym.Name[:])236 }237 return nil, nil, fmt.Errorf("reloc of invalid sym %s idx=%d type=%d", name, r.SymbolTableIndex, pesym.Type)238 }239 rp.Sym = gosym240 rp.Siz = 4241 rp.Off = int32(r.VirtualAddress)242 switch arch.Family {243 default:244 return nil, nil, fmt.Errorf("%s: unsupported arch %v", pn, arch.Family)245 case sys.I386, sys.AMD64:246 switch r.Type {247 default:248 return nil, nil, fmt.Errorf("%s: %v: unknown relocation type %v", pn, sectsyms[rsect], r.Type)249 case IMAGE_REL_I386_REL32, IMAGE_REL_AMD64_REL32,250 IMAGE_REL_AMD64_ADDR32, // R_X86_64_PC32251 IMAGE_REL_AMD64_ADDR32NB:252 rp.Type = objabi.R_PCREL253 rp.Add = int64(int32(binary.LittleEndian.Uint32(sectdata[rsect][rp.Off:])))254 case IMAGE_REL_I386_DIR32NB, IMAGE_REL_I386_DIR32:255 rp.Type = objabi.R_ADDR256 // load addend from image257 rp.Add = int64(int32(binary.LittleEndian.Uint32(sectdata[rsect][rp.Off:])))258 case IMAGE_REL_AMD64_ADDR64: // R_X86_64_64259 rp.Siz = 8260 rp.Type = objabi.R_ADDR261 // load addend from image262 rp.Add = int64(binary.LittleEndian.Uint64(sectdata[rsect][rp.Off:]))263 }264 case sys.ARM:265 switch r.Type {266 default:267 return nil, nil, fmt.Errorf("%s: %v: unknown ARM relocation type %v", pn, sectsyms[rsect], r.Type)268 case IMAGE_REL_ARM_SECREL:269 rp.Type = objabi.R_PCREL270 rp.Add = int64(int32(binary.LittleEndian.Uint32(sectdata[rsect][rp.Off:])))271 case IMAGE_REL_ARM_ADDR32:272 rp.Type = objabi.R_ADDR273 rp.Add = int64(int32(binary.LittleEndian.Uint32(sectdata[rsect][rp.Off:])))274 case IMAGE_REL_ARM_BRANCH24:275 rp.Type = objabi.R_CALLARM276 rp.Add = int64(int32(binary.LittleEndian.Uint32(sectdata[rsect][rp.Off:])))277 }278 }279 // ld -r could generate multiple section symbols for the280 // same section but with different values, we have to take281 // that into account282 if issect(pesym) {283 rp.Add += int64(pesym.Value)284 }285 }286 sort.Sort(sym.RelocByOff(rs[:rsect.NumberOfRelocations]))287 s := sectsyms[rsect]288 s.R = rs289 s.R = s.R[:rsect.NumberOfRelocations]290 }291 // enter sub-symbols into symbol table.292 for i, numaux := 0, 0; i < len(f.COFFSymbols); i += numaux + 1 {293 pesym := &f.COFFSymbols[i]294 numaux = int(pesym.NumberOfAuxSymbols)295 name, err := pesym.FullName(f.StringTable)296 if err != nil {297 return nil, nil, err298 }299 if name == "" {300 continue301 }302 if issect(pesym) {303 continue304 }305 if int(pesym.SectionNumber) > len(f.Sections) {306 continue307 }308 if pesym.SectionNumber == IMAGE_SYM_DEBUG {309 continue310 }311 var sect *pe.Section312 if pesym.SectionNumber > 0 {313 sect = f.Sections[pesym.SectionNumber-1]314 if _, found := sectsyms[sect]; !found {315 continue316 }317 }318 s, err := readpesym(arch, lookup, f, pesym, sectsyms, localSymVersion)319 if err != nil {320 return nil, nil, err321 }322 if pesym.SectionNumber == 0 { // extern323 if s.Type == sym.SDYNIMPORT {324 s.SetPlt(-2) // flag for dynimport in PE object files.325 }326 if s.Type == sym.SXREF && pesym.Value > 0 { // global data327 s.Type = sym.SNOPTRDATA328 s.Size = int64(pesym.Value)329 }330 continue331 } else if pesym.SectionNumber > 0 && int(pesym.SectionNumber) <= len(f.Sections) {332 sect = f.Sections[pesym.SectionNumber-1]333 if _, found := sectsyms[sect]; !found {334 return nil, nil, fmt.Errorf("%s: %v: missing sect.sym", pn, s)335 }336 } else {337 return nil, nil, fmt.Errorf("%s: %v: sectnum < 0!", pn, s)338 }339 if sect == nil {340 return nil, rsrc, nil341 }342 if s.Outer != nil {343 if s.Attr.DuplicateOK() {344 continue345 }346 return nil, nil, fmt.Errorf("%s: duplicate symbol reference: %s in both %s and %s", pn, s.Name, s.Outer.Name, sectsyms[sect].Name)347 }348 sectsym := sectsyms[sect]349 s.Sub = sectsym.Sub350 sectsym.Sub = s351 s.Type = sectsym.Type352 s.Attr |= sym.AttrSubSymbol353 s.Value = int64(pesym.Value)354 s.Size = 4355 s.Outer = sectsym356 if sectsym.Type == sym.STEXT {357 if s.Attr.External() && !s.Attr.DuplicateOK() {358 return nil, nil, fmt.Errorf("%s: duplicate symbol definition", s.Name)359 }360 s.Attr |= sym.AttrExternal361 }362 }363 // Sort outer lists by address, adding to textp.364 // This keeps textp in increasing address order.365 for _, sect := range f.Sections {366 s := sectsyms[sect]367 if s == nil {368 continue369 }370 if s.Sub != nil {371 s.Sub = sym.SortSub(s.Sub)372 }373 if s.Type == sym.STEXT {374 if s.Attr.OnList() {375 return nil, nil, fmt.Errorf("symbol %s listed multiple times", s.Name)376 }377 s.Attr |= sym.AttrOnList378 textp = append(textp, s)379 for s = s.Sub; s != nil; s = s.Sub {380 if s.Attr.OnList() {381 return nil, nil, fmt.Errorf("symbol %s listed multiple times", s.Name)382 }383 s.Attr |= sym.AttrOnList384 textp = append(textp, s)385 }386 }387 }388 return textp, rsrc, nil389}390func issect(s *pe.COFFSymbol) bool {391 return s.StorageClass == IMAGE_SYM_CLASS_STATIC && s.Type == 0 && s.Name[0] == '.'392}393func readpesym(arch *sys.Arch, lookup func(string, int) *sym.Symbol, f *pe.File, pesym *pe.COFFSymbol, sectsyms map[*pe.Section]*sym.Symbol, localSymVersion int) (*sym.Symbol, error) {394 symname, err := pesym.FullName(f.StringTable)395 if err != nil {396 return nil, err397 }398 var name string399 if issect(pesym) {400 name = sectsyms[f.Sections[pesym.SectionNumber-1]].Name401 } else {402 name = symname403 switch arch.Family {404 case sys.AMD64:405 if name == "__imp___acrt_iob_func" {406 // Do not rename __imp___acrt_iob_func into __acrt_iob_func,407 // because __imp___acrt_iob_func symbol is real408 // (see commit b295099 from git://git.code.sf.net/p/mingw-w64/mingw-w64 for details).409 } else {410 name = strings.TrimPrefix(name, "__imp_") // __imp_Name => Name411 }412 case sys.I386:413 if name == "__imp____acrt_iob_func" {414 // Do not rename __imp____acrt_iob_func into ___acrt_iob_func,415 // because __imp____acrt_iob_func symbol is real416 // (see commit b295099 from git://git.code.sf.net/p/mingw-w64/mingw-w64 for details).417 } else {418 name = strings.TrimPrefix(name, "__imp_") // __imp_Name => Name419 }420 if name[0] == '_' {421 name = name[1:] // _Name => Name422 }423 }424 }425 // remove last @XXX426 if i := strings.LastIndex(name, "@"); i >= 0 {427 name = name[:i]428 }429 var s *sym.Symbol430 switch pesym.Type {431 default:432 return nil, fmt.Errorf("%s: invalid symbol type %d", symname, pesym.Type)433 case IMAGE_SYM_DTYPE_FUNCTION, IMAGE_SYM_DTYPE_NULL:434 switch pesym.StorageClass {435 case IMAGE_SYM_CLASS_EXTERNAL: //global436 s = lookup(name, 0)437 case IMAGE_SYM_CLASS_NULL, IMAGE_SYM_CLASS_STATIC, IMAGE_SYM_CLASS_LABEL:438 s = lookup(name, localSymVersion)439 s.Attr |= sym.AttrDuplicateOK440 default:441 return nil, fmt.Errorf("%s: invalid symbol binding %d", symname, pesym.StorageClass)442 }443 }444 if s != nil && s.Type == 0 && (pesym.StorageClass != IMAGE_SYM_CLASS_STATIC || pesym.Value != 0) {445 s.Type = sym.SXREF446 }447 if strings.HasPrefix(symname, "__imp_") {448 s.SetGot(-2) // flag for __imp_449 }450 return s, nil451}...
mov32
Using AI Code Generation
1import "fmt"2type x86 struct {3}4func (x *x86) mov32() int32 {5}6func main() {7 x := x86{a: 10, b: 20}8 fmt.Println(x.mov32())9}
mov32
Using AI Code Generation
1import (2func main() {3 x.Mov32(0x12345678, 0x12345678)4 fmt.Println(x)5}6import (7func main() {8 x.Mov32(0x12345678, 0x12345678)9 x.Mov32(0x12345678, 0x12345678)10 fmt.Println(x)11}12import (13func main() {14 x.Mov32(0x12345678, 0x12345678)15 x.Mov32(0x12345678, 0x12345678)16 x.Mov32(0x12345678, 0x12345678)17 fmt.Println(x)18}
mov32
Using AI Code Generation
1import (2type Win32_Processor struct {3}4type Win32_PhysicalMemory struct {5}6type Win32_Battery struct {7}8type Win32_VideoController struct {9}10type Win32_OperatingSystem struct {11}12type Win32_ComputerSystem struct {13}14type Win32_Keyboard struct {15}16type Win32_PointingDevice struct {17}18type Win32_DiskDrive struct {19}20type Win32_DiskPartition struct {21}22type Win32_LogicalDisk struct {23}24type Win32_LogicalDiskToPartition struct {25}
mov32
Using AI Code Generation
1import (2type X86 struct {3}4func (x *X86) mov32(from, to int) {5 fmt.Println("mov32 called")6}7func main() {8 pretty.Println(x)9 x.mov32(1, 2)10}11import (12type X86 struct {13}14func (x *X86) mov32(from, to int) {15 fmt.Println("mov32 called")16}17func main() {18 pretty.Println(x)19 x.mov32(1, 2)20}21import (22type X86 struct {23}24func (x *X86) mov32(from, to int) {25 fmt.Println("mov32 called")26}27func main() {28 pretty.Println(x)29 x.mov32(1, 2)30}31import (32type X86 struct {33}34func (x *X86) mov32(from, to int) {35 fmt.Println("mov32 called")36}37func main() {38 pretty.Println(x)39 x.mov32(1, 2)40}41import (42type X86 struct {43}44func (x *X86) mov32(from, to int) {45 fmt.Println("mov32 called")46}47func main() {48 pretty.Println(x)49 x.mov32(1, 2)50}
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