Bug Summary

File:build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/llvm/include/llvm/Object/ObjectFile.h
Warning:line 474, column 7
Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name MachODumper.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm -resource-dir /usr/lib/llvm-15/lib/clang/15.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I tools/llvm-readobj -I /build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/llvm/tools/llvm-readobj -I include -I /build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/llvm/include -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-15/lib/clang/15.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm=build-llvm -fmacro-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/= -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm=build-llvm -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/= -O3 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/build-llvm=build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2022-04-20-140412-16051-1 -x c++ /build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/llvm/tools/llvm-readobj/MachODumper.cpp

/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/llvm/tools/llvm-readobj/MachODumper.cpp

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1//===- MachODumper.cpp - Object file dumping utility for llvm -------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the MachO-specific dumper for llvm-readobj.
10//
11//===----------------------------------------------------------------------===//
12
13#include "ObjDumper.h"
14#include "StackMapPrinter.h"
15#include "llvm-readobj.h"
16#include "llvm/ADT/Optional.h"
17#include "llvm/ADT/SmallString.h"
18#include "llvm/ADT/StringExtras.h"
19#include "llvm/Object/MachO.h"
20#include "llvm/Support/BinaryStreamReader.h"
21#include "llvm/Support/Casting.h"
22#include "llvm/Support/ScopedPrinter.h"
23
24using namespace llvm;
25using namespace object;
26
27namespace {
28
29class MachODumper : public ObjDumper {
30public:
31 MachODumper(const MachOObjectFile *Obj, ScopedPrinter &Writer)
32 : ObjDumper(Writer, Obj->getFileName()), Obj(Obj) {}
33
34 void printFileHeaders() override;
35 void printSectionHeaders() override;
36 void printRelocations() override;
37 void printUnwindInfo() override;
38 void printStackMap() const override;
39 void printCGProfile() override;
40
41 void printNeededLibraries() override;
42
43 bool canCompareSymbols() const override { return true; }
44 bool compareSymbolsByName(object::SymbolRef LHS,
45 object::SymbolRef RHS) const override;
46 bool compareSymbolsByType(object::SymbolRef LHS,
47 object::SymbolRef RHS) const override;
48 // MachO-specific.
49 void printMachODataInCode() override;
50 void printMachOVersionMin() override;
51 void printMachODysymtab() override;
52 void printMachOSegment() override;
53 void printMachOIndirectSymbols() override;
54 void printMachOLinkerOptions () override;
55
56private:
57 template<class MachHeader>
58 void printFileHeaders(const MachHeader &Header);
59
60 StringRef getSymbolName(const SymbolRef &Symbol) const;
61 uint8_t getSymbolType(const SymbolRef &Symbol) const;
62
63 void printSymbols() override;
64 void printSymbols(Optional<SymbolComparator> SymComp) override;
65 void printDynamicSymbols() override;
66 void printDynamicSymbols(Optional<SymbolComparator> SymComp) override;
67 void printSymbol(const SymbolRef &Symbol, ScopedPrinter &W);
68 void printSymbol(const SymbolRef &Symbol);
69
70 void printRelocation(const RelocationRef &Reloc);
71
72 void printRelocation(const MachOObjectFile *Obj, const RelocationRef &Reloc);
73
74 void printSectionHeaders(const MachOObjectFile *Obj);
75
76 const MachOObjectFile *Obj;
77};
78
79} // namespace
80
81
82namespace llvm {
83
84std::unique_ptr<ObjDumper> createMachODumper(const object::MachOObjectFile &Obj,
85 ScopedPrinter &Writer) {
86 return std::make_unique<MachODumper>(&Obj, Writer);
87}
88
89} // namespace llvm
90
91const EnumEntry<uint32_t> MachOMagics[] = {
92 { "Magic", MachO::MH_MAGIC },
93 { "Cigam", MachO::MH_CIGAM },
94 { "Magic64", MachO::MH_MAGIC_64 },
95 { "Cigam64", MachO::MH_CIGAM_64 },
96 { "FatMagic", MachO::FAT_MAGIC },
97 { "FatCigam", MachO::FAT_CIGAM },
98};
99
100const EnumEntry<uint32_t> MachOHeaderFileTypes[] = {
101 { "Relocatable", MachO::MH_OBJECT },
102 { "Executable", MachO::MH_EXECUTE },
103 { "FixedVMLibrary", MachO::MH_FVMLIB },
104 { "Core", MachO::MH_CORE },
105 { "PreloadedExecutable", MachO::MH_PRELOAD },
106 { "DynamicLibrary", MachO::MH_DYLIB },
107 { "DynamicLinker", MachO::MH_DYLINKER },
108 { "Bundle", MachO::MH_BUNDLE },
109 { "DynamicLibraryStub", MachO::MH_DYLIB_STUB },
110 { "DWARFSymbol", MachO::MH_DSYM },
111 { "KextBundle", MachO::MH_KEXT_BUNDLE },
112};
113
114const EnumEntry<uint32_t> MachOHeaderCpuTypes[] = {
115 { "Any" , static_cast<uint32_t>(MachO::CPU_TYPE_ANY) },
116 { "X86" , MachO::CPU_TYPE_X86 },
117 { "X86-64" , MachO::CPU_TYPE_X86_64 },
118 { "Mc98000" , MachO::CPU_TYPE_MC98000 },
119 { "Arm" , MachO::CPU_TYPE_ARM },
120 { "Arm64" , MachO::CPU_TYPE_ARM64 },
121 { "Sparc" , MachO::CPU_TYPE_SPARC },
122 { "PowerPC" , MachO::CPU_TYPE_POWERPC },
123 { "PowerPC64" , MachO::CPU_TYPE_POWERPC64 },
124};
125
126const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX86[] = {
127 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_I386_ALL){ "CPU_SUBTYPE_I386_ALL", MachO::CPU_SUBTYPE_I386_ALL },
128 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_386){ "CPU_SUBTYPE_386", MachO::CPU_SUBTYPE_386 },
129 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486){ "CPU_SUBTYPE_486", MachO::CPU_SUBTYPE_486 },
130 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486SX){ "CPU_SUBTYPE_486SX", MachO::CPU_SUBTYPE_486SX },
131 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_586){ "CPU_SUBTYPE_586", MachO::CPU_SUBTYPE_586 },
132 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTPRO){ "CPU_SUBTYPE_PENTPRO", MachO::CPU_SUBTYPE_PENTPRO },
133 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M3){ "CPU_SUBTYPE_PENTII_M3", MachO::CPU_SUBTYPE_PENTII_M3 },
134 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M5){ "CPU_SUBTYPE_PENTII_M5", MachO::CPU_SUBTYPE_PENTII_M5 },
135 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON){ "CPU_SUBTYPE_CELERON", MachO::CPU_SUBTYPE_CELERON },
136 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON_MOBILE){ "CPU_SUBTYPE_CELERON_MOBILE", MachO::CPU_SUBTYPE_CELERON_MOBILE
},
137 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3){ "CPU_SUBTYPE_PENTIUM_3", MachO::CPU_SUBTYPE_PENTIUM_3 },
138 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_M){ "CPU_SUBTYPE_PENTIUM_3_M", MachO::CPU_SUBTYPE_PENTIUM_3_M },
139 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_XEON){ "CPU_SUBTYPE_PENTIUM_3_XEON", MachO::CPU_SUBTYPE_PENTIUM_3_XEON
},
140 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_M){ "CPU_SUBTYPE_PENTIUM_M", MachO::CPU_SUBTYPE_PENTIUM_M },
141 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4){ "CPU_SUBTYPE_PENTIUM_4", MachO::CPU_SUBTYPE_PENTIUM_4 },
142 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4_M){ "CPU_SUBTYPE_PENTIUM_4_M", MachO::CPU_SUBTYPE_PENTIUM_4_M },
143 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM){ "CPU_SUBTYPE_ITANIUM", MachO::CPU_SUBTYPE_ITANIUM },
144 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM_2){ "CPU_SUBTYPE_ITANIUM_2", MachO::CPU_SUBTYPE_ITANIUM_2 },
145 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON){ "CPU_SUBTYPE_XEON", MachO::CPU_SUBTYPE_XEON },
146 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON_MP){ "CPU_SUBTYPE_XEON_MP", MachO::CPU_SUBTYPE_XEON_MP },
147};
148
149const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX64[] = {
150 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_ALL){ "CPU_SUBTYPE_X86_64_ALL", MachO::CPU_SUBTYPE_X86_64_ALL },
151 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_ARCH1){ "CPU_SUBTYPE_X86_ARCH1", MachO::CPU_SUBTYPE_X86_ARCH1 },
152 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_H){ "CPU_SUBTYPE_X86_64_H", MachO::CPU_SUBTYPE_X86_64_H },
153};
154
155const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM[] = {
156 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_ALL){ "CPU_SUBTYPE_ARM_ALL", MachO::CPU_SUBTYPE_ARM_ALL },
157 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V4T){ "CPU_SUBTYPE_ARM_V4T", MachO::CPU_SUBTYPE_ARM_V4T },
158 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6){ "CPU_SUBTYPE_ARM_V6", MachO::CPU_SUBTYPE_ARM_V6 },
159 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5){ "CPU_SUBTYPE_ARM_V5", MachO::CPU_SUBTYPE_ARM_V5 },
160 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5TEJ){ "CPU_SUBTYPE_ARM_V5TEJ", MachO::CPU_SUBTYPE_ARM_V5TEJ },
161 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_XSCALE){ "CPU_SUBTYPE_ARM_XSCALE", MachO::CPU_SUBTYPE_ARM_XSCALE },
162 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7){ "CPU_SUBTYPE_ARM_V7", MachO::CPU_SUBTYPE_ARM_V7 },
163 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7S){ "CPU_SUBTYPE_ARM_V7S", MachO::CPU_SUBTYPE_ARM_V7S },
164 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7K){ "CPU_SUBTYPE_ARM_V7K", MachO::CPU_SUBTYPE_ARM_V7K },
165 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6M){ "CPU_SUBTYPE_ARM_V6M", MachO::CPU_SUBTYPE_ARM_V6M },
166 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7M){ "CPU_SUBTYPE_ARM_V7M", MachO::CPU_SUBTYPE_ARM_V7M },
167 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7EM){ "CPU_SUBTYPE_ARM_V7EM", MachO::CPU_SUBTYPE_ARM_V7EM },
168};
169
170const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM64[] = {
171 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_ALL){ "CPU_SUBTYPE_ARM64_ALL", MachO::CPU_SUBTYPE_ARM64_ALL },
172 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_V8){ "CPU_SUBTYPE_ARM64_V8", MachO::CPU_SUBTYPE_ARM64_V8 },
173 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64E){ "CPU_SUBTYPE_ARM64E", MachO::CPU_SUBTYPE_ARM64E },
174};
175
176const EnumEntry<uint32_t> MachOHeaderCpuSubtypesSPARC[] = {
177 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_SPARC_ALL){ "CPU_SUBTYPE_SPARC_ALL", MachO::CPU_SUBTYPE_SPARC_ALL },
178};
179
180const EnumEntry<uint32_t> MachOHeaderCpuSubtypesPPC[] = {
181 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_ALL){ "CPU_SUBTYPE_POWERPC_ALL", MachO::CPU_SUBTYPE_POWERPC_ALL },
182 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_601){ "CPU_SUBTYPE_POWERPC_601", MachO::CPU_SUBTYPE_POWERPC_601 },
183 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_602){ "CPU_SUBTYPE_POWERPC_602", MachO::CPU_SUBTYPE_POWERPC_602 },
184 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603){ "CPU_SUBTYPE_POWERPC_603", MachO::CPU_SUBTYPE_POWERPC_603 },
185 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603e){ "CPU_SUBTYPE_POWERPC_603e", MachO::CPU_SUBTYPE_POWERPC_603e
},
186 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603ev){ "CPU_SUBTYPE_POWERPC_603ev", MachO::CPU_SUBTYPE_POWERPC_603ev
},
187 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604){ "CPU_SUBTYPE_POWERPC_604", MachO::CPU_SUBTYPE_POWERPC_604 },
188 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604e){ "CPU_SUBTYPE_POWERPC_604e", MachO::CPU_SUBTYPE_POWERPC_604e
},
189 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_620){ "CPU_SUBTYPE_POWERPC_620", MachO::CPU_SUBTYPE_POWERPC_620 },
190 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_750){ "CPU_SUBTYPE_POWERPC_750", MachO::CPU_SUBTYPE_POWERPC_750 },
191 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7400){ "CPU_SUBTYPE_POWERPC_7400", MachO::CPU_SUBTYPE_POWERPC_7400
},
192 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7450){ "CPU_SUBTYPE_POWERPC_7450", MachO::CPU_SUBTYPE_POWERPC_7450
},
193 LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_970){ "CPU_SUBTYPE_POWERPC_970", MachO::CPU_SUBTYPE_POWERPC_970 },
194};
195
196const EnumEntry<uint32_t> MachOHeaderFlags[] = {
197 LLVM_READOBJ_ENUM_ENT(MachO, MH_NOUNDEFS){ "MH_NOUNDEFS", MachO::MH_NOUNDEFS },
198 LLVM_READOBJ_ENUM_ENT(MachO, MH_INCRLINK){ "MH_INCRLINK", MachO::MH_INCRLINK },
199 LLVM_READOBJ_ENUM_ENT(MachO, MH_DYLDLINK){ "MH_DYLDLINK", MachO::MH_DYLDLINK },
200 LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDATLOAD){ "MH_BINDATLOAD", MachO::MH_BINDATLOAD },
201 LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBOUND){ "MH_PREBOUND", MachO::MH_PREBOUND },
202 LLVM_READOBJ_ENUM_ENT(MachO, MH_SPLIT_SEGS){ "MH_SPLIT_SEGS", MachO::MH_SPLIT_SEGS },
203 LLVM_READOBJ_ENUM_ENT(MachO, MH_LAZY_INIT){ "MH_LAZY_INIT", MachO::MH_LAZY_INIT },
204 LLVM_READOBJ_ENUM_ENT(MachO, MH_TWOLEVEL){ "MH_TWOLEVEL", MachO::MH_TWOLEVEL },
205 LLVM_READOBJ_ENUM_ENT(MachO, MH_FORCE_FLAT){ "MH_FORCE_FLAT", MachO::MH_FORCE_FLAT },
206 LLVM_READOBJ_ENUM_ENT(MachO, MH_NOMULTIDEFS){ "MH_NOMULTIDEFS", MachO::MH_NOMULTIDEFS },
207 LLVM_READOBJ_ENUM_ENT(MachO, MH_NOFIXPREBINDING){ "MH_NOFIXPREBINDING", MachO::MH_NOFIXPREBINDING },
208 LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBINDABLE){ "MH_PREBINDABLE", MachO::MH_PREBINDABLE },
209 LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLMODSBOUND){ "MH_ALLMODSBOUND", MachO::MH_ALLMODSBOUND },
210 LLVM_READOBJ_ENUM_ENT(MachO, MH_SUBSECTIONS_VIA_SYMBOLS){ "MH_SUBSECTIONS_VIA_SYMBOLS", MachO::MH_SUBSECTIONS_VIA_SYMBOLS
},
211 LLVM_READOBJ_ENUM_ENT(MachO, MH_CANONICAL){ "MH_CANONICAL", MachO::MH_CANONICAL },
212 LLVM_READOBJ_ENUM_ENT(MachO, MH_WEAK_DEFINES){ "MH_WEAK_DEFINES", MachO::MH_WEAK_DEFINES },
213 LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDS_TO_WEAK){ "MH_BINDS_TO_WEAK", MachO::MH_BINDS_TO_WEAK },
214 LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLOW_STACK_EXECUTION){ "MH_ALLOW_STACK_EXECUTION", MachO::MH_ALLOW_STACK_EXECUTION
},
215 LLVM_READOBJ_ENUM_ENT(MachO, MH_ROOT_SAFE){ "MH_ROOT_SAFE", MachO::MH_ROOT_SAFE },
216 LLVM_READOBJ_ENUM_ENT(MachO, MH_SETUID_SAFE){ "MH_SETUID_SAFE", MachO::MH_SETUID_SAFE },
217 LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_REEXPORTED_DYLIBS){ "MH_NO_REEXPORTED_DYLIBS", MachO::MH_NO_REEXPORTED_DYLIBS },
218 LLVM_READOBJ_ENUM_ENT(MachO, MH_PIE){ "MH_PIE", MachO::MH_PIE },
219 LLVM_READOBJ_ENUM_ENT(MachO, MH_DEAD_STRIPPABLE_DYLIB){ "MH_DEAD_STRIPPABLE_DYLIB", MachO::MH_DEAD_STRIPPABLE_DYLIB
},
220 LLVM_READOBJ_ENUM_ENT(MachO, MH_HAS_TLV_DESCRIPTORS){ "MH_HAS_TLV_DESCRIPTORS", MachO::MH_HAS_TLV_DESCRIPTORS },
221 LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_HEAP_EXECUTION){ "MH_NO_HEAP_EXECUTION", MachO::MH_NO_HEAP_EXECUTION },
222 LLVM_READOBJ_ENUM_ENT(MachO, MH_APP_EXTENSION_SAFE){ "MH_APP_EXTENSION_SAFE", MachO::MH_APP_EXTENSION_SAFE },
223};
224
225const EnumEntry<unsigned> MachOSectionTypes[] = {
226 { "Regular" , MachO::S_REGULAR },
227 { "ZeroFill" , MachO::S_ZEROFILL },
228 { "CStringLiterals" , MachO::S_CSTRING_LITERALS },
229 { "4ByteLiterals" , MachO::S_4BYTE_LITERALS },
230 { "8ByteLiterals" , MachO::S_8BYTE_LITERALS },
231 { "LiteralPointers" , MachO::S_LITERAL_POINTERS },
232 { "NonLazySymbolPointers" , MachO::S_NON_LAZY_SYMBOL_POINTERS },
233 { "LazySymbolPointers" , MachO::S_LAZY_SYMBOL_POINTERS },
234 { "SymbolStubs" , MachO::S_SYMBOL_STUBS },
235 { "ModInitFuncPointers" , MachO::S_MOD_INIT_FUNC_POINTERS },
236 { "ModTermFuncPointers" , MachO::S_MOD_TERM_FUNC_POINTERS },
237 { "Coalesced" , MachO::S_COALESCED },
238 { "GBZeroFill" , MachO::S_GB_ZEROFILL },
239 { "Interposing" , MachO::S_INTERPOSING },
240 { "16ByteLiterals" , MachO::S_16BYTE_LITERALS },
241 { "DTraceDOF" , MachO::S_DTRACE_DOF },
242 { "LazyDylibSymbolPointers" , MachO::S_LAZY_DYLIB_SYMBOL_POINTERS },
243 { "ThreadLocalRegular" , MachO::S_THREAD_LOCAL_REGULAR },
244 { "ThreadLocalZerofill" , MachO::S_THREAD_LOCAL_ZEROFILL },
245 { "ThreadLocalVariables" , MachO::S_THREAD_LOCAL_VARIABLES },
246 { "ThreadLocalVariablePointers" , MachO::S_THREAD_LOCAL_VARIABLE_POINTERS },
247 { "ThreadLocalInitFunctionPointers", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS }
248};
249
250const EnumEntry<unsigned> MachOSectionAttributes[] = {
251 { "LocReloc" , 1 << 0 /*S_ATTR_LOC_RELOC */ },
252 { "ExtReloc" , 1 << 1 /*S_ATTR_EXT_RELOC */ },
253 { "SomeInstructions" , 1 << 2 /*S_ATTR_SOME_INSTRUCTIONS */ },
254 { "Debug" , 1 << 17 /*S_ATTR_DEBUG */ },
255 { "SelfModifyingCode", 1 << 18 /*S_ATTR_SELF_MODIFYING_CODE*/ },
256 { "LiveSupport" , 1 << 19 /*S_ATTR_LIVE_SUPPORT */ },
257 { "NoDeadStrip" , 1 << 20 /*S_ATTR_NO_DEAD_STRIP */ },
258 { "StripStaticSyms" , 1 << 21 /*S_ATTR_STRIP_STATIC_SYMS */ },
259 { "NoTOC" , 1 << 22 /*S_ATTR_NO_TOC */ },
260 { "PureInstructions" , 1 << 23 /*S_ATTR_PURE_INSTRUCTIONS */ },
261};
262
263const EnumEntry<unsigned> MachOSymbolRefTypes[] = {
264 { "UndefinedNonLazy", 0 },
265 { "ReferenceFlagUndefinedLazy", 1 },
266 { "ReferenceFlagDefined", 2 },
267 { "ReferenceFlagPrivateDefined", 3 },
268 { "ReferenceFlagPrivateUndefinedNonLazy", 4 },
269 { "ReferenceFlagPrivateUndefinedLazy", 5 }
270};
271
272const EnumEntry<unsigned> MachOSymbolFlags[] = {
273 { "ThumbDef", 0x8 },
274 { "ReferencedDynamically", 0x10 },
275 { "NoDeadStrip", 0x20 },
276 { "WeakRef", 0x40 },
277 { "WeakDef", 0x80 },
278 { "SymbolResolver", 0x100 },
279 { "AltEntry", 0x200 },
280 { "ColdFunc", 0x400 },
281};
282
283const EnumEntry<unsigned> MachOSymbolTypes[] = {
284 { "Undef", 0x0 },
285 { "Abs", 0x2 },
286 { "Indirect", 0xA },
287 { "PreboundUndef", 0xC },
288 { "Section", 0xE }
289};
290
291namespace {
292 struct MachOSection {
293 ArrayRef<char> Name;
294 ArrayRef<char> SegmentName;
295 uint64_t Address;
296 uint64_t Size;
297 uint32_t Offset;
298 uint32_t Alignment;
299 uint32_t RelocationTableOffset;
300 uint32_t NumRelocationTableEntries;
301 uint32_t Flags;
302 uint32_t Reserved1;
303 uint32_t Reserved2;
304 uint32_t Reserved3;
305 };
306
307 struct MachOSegment {
308 std::string CmdName;
309 std::string SegName;
310 uint64_t cmdsize;
311 uint64_t vmaddr;
312 uint64_t vmsize;
313 uint64_t fileoff;
314 uint64_t filesize;
315 uint32_t maxprot;
316 uint32_t initprot;
317 uint32_t nsects;
318 uint32_t flags;
319 };
320
321 struct MachOSymbol {
322 uint32_t StringIndex;
323 uint8_t Type;
324 uint8_t SectionIndex;
325 uint16_t Flags;
326 uint64_t Value;
327 };
328}
329
330static std::string getMask(uint32_t prot)
331{
332 // TODO (davide): This always assumes prot is valid.
333 // Catch mistakes and report if needed.
334 std::string Prot;
335 Prot = "";
336 Prot += (prot & MachO::VM_PROT_READ) ? "r" : "-";
337 Prot += (prot & MachO::VM_PROT_WRITE) ? "w" : "-";
338 Prot += (prot & MachO::VM_PROT_EXECUTE) ? "x" : "-";
339 return Prot;
340}
341
342static void getSection(const MachOObjectFile *Obj,
343 DataRefImpl Sec,
344 MachOSection &Section) {
345 if (!Obj->is64Bit()) {
346 MachO::section Sect = Obj->getSection(Sec);
347 Section.Address = Sect.addr;
348 Section.Size = Sect.size;
349 Section.Offset = Sect.offset;
350 Section.Alignment = Sect.align;
351 Section.RelocationTableOffset = Sect.reloff;
352 Section.NumRelocationTableEntries = Sect.nreloc;
353 Section.Flags = Sect.flags;
354 Section.Reserved1 = Sect.reserved1;
355 Section.Reserved2 = Sect.reserved2;
356 return;
357 }
358 MachO::section_64 Sect = Obj->getSection64(Sec);
359 Section.Address = Sect.addr;
360 Section.Size = Sect.size;
361 Section.Offset = Sect.offset;
362 Section.Alignment = Sect.align;
363 Section.RelocationTableOffset = Sect.reloff;
364 Section.NumRelocationTableEntries = Sect.nreloc;
365 Section.Flags = Sect.flags;
366 Section.Reserved1 = Sect.reserved1;
367 Section.Reserved2 = Sect.reserved2;
368 Section.Reserved3 = Sect.reserved3;
369}
370
371static void getSegment(const MachOObjectFile *Obj,
372 const MachOObjectFile::LoadCommandInfo &L,
373 MachOSegment &Segment) {
374 if (!Obj->is64Bit()) {
375 MachO::segment_command SC = Obj->getSegmentLoadCommand(L);
376 Segment.CmdName = "LC_SEGMENT";
377 Segment.SegName = SC.segname;
378 Segment.cmdsize = SC.cmdsize;
379 Segment.vmaddr = SC.vmaddr;
380 Segment.vmsize = SC.vmsize;
381 Segment.fileoff = SC.fileoff;
382 Segment.filesize = SC.filesize;
383 Segment.maxprot = SC.maxprot;
384 Segment.initprot = SC.initprot;
385 Segment.nsects = SC.nsects;
386 Segment.flags = SC.flags;
387 return;
388 }
389 MachO::segment_command_64 SC = Obj->getSegment64LoadCommand(L);
390 Segment.CmdName = "LC_SEGMENT_64";
391 Segment.SegName = SC.segname;
392 Segment.cmdsize = SC.cmdsize;
393 Segment.vmaddr = SC.vmaddr;
394 Segment.vmsize = SC.vmsize;
395 Segment.fileoff = SC.fileoff;
396 Segment.filesize = SC.filesize;
397 Segment.maxprot = SC.maxprot;
398 Segment.initprot = SC.initprot;
399 Segment.nsects = SC.nsects;
400 Segment.flags = SC.flags;
401}
402
403static void getSymbol(const MachOObjectFile *Obj,
404 DataRefImpl DRI,
405 MachOSymbol &Symbol) {
406 if (!Obj->is64Bit()) {
407 MachO::nlist Entry = Obj->getSymbolTableEntry(DRI);
408 Symbol.StringIndex = Entry.n_strx;
409 Symbol.Type = Entry.n_type;
410 Symbol.SectionIndex = Entry.n_sect;
411 Symbol.Flags = Entry.n_desc;
412 Symbol.Value = Entry.n_value;
413 return;
414 }
415 MachO::nlist_64 Entry = Obj->getSymbol64TableEntry(DRI);
416 Symbol.StringIndex = Entry.n_strx;
417 Symbol.Type = Entry.n_type;
418 Symbol.SectionIndex = Entry.n_sect;
419 Symbol.Flags = Entry.n_desc;
420 Symbol.Value = Entry.n_value;
421}
422
423void MachODumper::printFileHeaders() {
424 DictScope H(W, "MachHeader");
425 if (!Obj->is64Bit()) {
426 printFileHeaders(Obj->getHeader());
427 } else {
428 printFileHeaders(Obj->getHeader64());
429 W.printHex("Reserved", Obj->getHeader64().reserved);
430 }
431}
432
433template<class MachHeader>
434void MachODumper::printFileHeaders(const MachHeader &Header) {
435 W.printEnum("Magic", Header.magic, makeArrayRef(MachOMagics));
436 W.printEnum("CpuType", Header.cputype, makeArrayRef(MachOHeaderCpuTypes));
437 uint32_t subtype = Header.cpusubtype & ~MachO::CPU_SUBTYPE_MASK;
438 switch (Header.cputype) {
439 case MachO::CPU_TYPE_X86:
440 W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX86));
441 break;
442 case MachO::CPU_TYPE_X86_64:
443 W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX64));
444 break;
445 case MachO::CPU_TYPE_ARM:
446 W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM));
447 break;
448 case MachO::CPU_TYPE_POWERPC:
449 W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesPPC));
450 break;
451 case MachO::CPU_TYPE_SPARC:
452 W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesSPARC));
453 break;
454 case MachO::CPU_TYPE_ARM64:
455 W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM64));
456 break;
457 case MachO::CPU_TYPE_POWERPC64:
458 default:
459 W.printHex("CpuSubtype", subtype);
460 }
461 W.printEnum("FileType", Header.filetype, makeArrayRef(MachOHeaderFileTypes));
462 W.printNumber("NumOfLoadCommands", Header.ncmds);
463 W.printNumber("SizeOfLoadCommands", Header.sizeofcmds);
464 W.printFlags("Flags", Header.flags, makeArrayRef(MachOHeaderFlags));
465}
466
467void MachODumper::printSectionHeaders() { return printSectionHeaders(Obj); }
468
469void MachODumper::printSectionHeaders(const MachOObjectFile *Obj) {
470 ListScope Group(W, "Sections");
471
472 int SectionIndex = -1;
473 for (const SectionRef &Section : Obj->sections()) {
474 ++SectionIndex;
475
476 MachOSection MOSection;
477 getSection(Obj, Section.getRawDataRefImpl(), MOSection);
478 DataRefImpl DR = Section.getRawDataRefImpl();
479 StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName());
480 ArrayRef<char> RawName = Obj->getSectionRawName(DR);
481 StringRef SegmentName = Obj->getSectionFinalSegmentName(DR);
482 ArrayRef<char> RawSegmentName = Obj->getSectionRawFinalSegmentName(DR);
483
484 DictScope SectionD(W, "Section");
485 W.printNumber("Index", SectionIndex);
486 W.printBinary("Name", Name, RawName);
487 W.printBinary("Segment", SegmentName, RawSegmentName);
488 W.printHex("Address", MOSection.Address);
489 W.printHex("Size", MOSection.Size);
490 W.printNumber("Offset", MOSection.Offset);
491 W.printNumber("Alignment", MOSection.Alignment);
492 W.printHex("RelocationOffset", MOSection.RelocationTableOffset);
493 W.printNumber("RelocationCount", MOSection.NumRelocationTableEntries);
494 W.printEnum("Type", MOSection.Flags & 0xFF,
495 makeArrayRef(MachOSectionTypes));
496 W.printFlags("Attributes", MOSection.Flags >> 8,
497 makeArrayRef(MachOSectionAttributes));
498 W.printHex("Reserved1", MOSection.Reserved1);
499 W.printHex("Reserved2", MOSection.Reserved2);
500 if (Obj->is64Bit())
501 W.printHex("Reserved3", MOSection.Reserved3);
502
503 if (opts::SectionRelocations) {
504 ListScope D(W, "Relocations");
505 for (const RelocationRef &Reloc : Section.relocations())
506 printRelocation(Reloc);
507 }
508
509 if (opts::SectionSymbols) {
510 ListScope D(W, "Symbols");
511 for (const SymbolRef &Symbol : Obj->symbols()) {
512 if (!Section.containsSymbol(Symbol))
513 continue;
514
515 printSymbol(Symbol);
516 }
517 }
518
519 if (opts::SectionData && !Section.isBSS())
520 W.printBinaryBlock("SectionData", unwrapOrError(Obj->getFileName(),
521 Section.getContents()));
522 }
523}
524
525void MachODumper::printRelocations() {
526 ListScope D(W, "Relocations");
527
528 std::error_code EC;
529 for (const SectionRef &Section : Obj->sections()) {
530 StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName());
531 bool PrintedGroup = false;
532 for (const RelocationRef &Reloc : Section.relocations()) {
533 if (!PrintedGroup) {
534 W.startLine() << "Section " << Name << " {\n";
535 W.indent();
536 PrintedGroup = true;
537 }
538
539 printRelocation(Reloc);
540 }
541
542 if (PrintedGroup) {
543 W.unindent();
544 W.startLine() << "}\n";
545 }
546 }
547}
548
549void MachODumper::printRelocation(const RelocationRef &Reloc) {
550 return printRelocation(Obj, Reloc);
551}
552
553void MachODumper::printRelocation(const MachOObjectFile *Obj,
554 const RelocationRef &Reloc) {
555 uint64_t Offset = Reloc.getOffset();
556 SmallString<32> RelocName;
557 Reloc.getTypeName(RelocName);
558
559 DataRefImpl DR = Reloc.getRawDataRefImpl();
560 MachO::any_relocation_info RE = Obj->getRelocation(DR);
561 bool IsScattered = Obj->isRelocationScattered(RE);
562 bool IsExtern = !IsScattered && Obj->getPlainRelocationExternal(RE);
563
564 StringRef TargetName;
565 if (IsExtern) {
566 symbol_iterator Symbol = Reloc.getSymbol();
567 if (Symbol != Obj->symbol_end()) {
568 TargetName = getSymbolName(*Symbol);
569 }
570 } else if (!IsScattered) {
571 section_iterator SecI = Obj->getRelocationSection(DR);
572 if (SecI != Obj->section_end())
573 TargetName = unwrapOrError(Obj->getFileName(), SecI->getName());
574 }
575 if (TargetName.empty())
576 TargetName = "-";
577
578 if (opts::ExpandRelocs) {
579 DictScope Group(W, "Relocation");
580 W.printHex("Offset", Offset);
581 W.printNumber("PCRel", Obj->getAnyRelocationPCRel(RE));
582 W.printNumber("Length", Obj->getAnyRelocationLength(RE));
583 W.printNumber("Type", RelocName, Obj->getAnyRelocationType(RE));
584 if (IsScattered) {
585 W.printHex("Value", Obj->getScatteredRelocationValue(RE));
586 } else {
587 const char *Kind = IsExtern ? "Symbol" : "Section";
588 W.printNumber(Kind, TargetName, Obj->getPlainRelocationSymbolNum(RE));
589 }
590 } else {
591 SmallString<32> SymbolNameOrOffset("0x");
592 if (IsScattered) {
593 // Scattered relocations don't really have an associated symbol for some
594 // reason, even if one exists in the symtab at the correct address.
595 SymbolNameOrOffset += utohexstr(Obj->getScatteredRelocationValue(RE));
596 } else {
597 SymbolNameOrOffset = TargetName;
598 }
599
600 raw_ostream& OS = W.startLine();
601 OS << W.hex(Offset)
602 << " " << Obj->getAnyRelocationPCRel(RE)
603 << " " << Obj->getAnyRelocationLength(RE);
604 if (IsScattered)
605 OS << " n/a";
606 else
607 OS << " " << Obj->getPlainRelocationExternal(RE);
608 OS << " " << RelocName
609 << " " << IsScattered
610 << " " << SymbolNameOrOffset
611 << "\n";
612 }
613}
614
615StringRef MachODumper::getSymbolName(const SymbolRef &Symbol) const {
616 Expected<StringRef> SymbolNameOrErr = Symbol.getName();
617 if (!SymbolNameOrErr) {
618 reportError(SymbolNameOrErr.takeError(), Obj->getFileName());
619 }
620 return *SymbolNameOrErr;
621}
622
623uint8_t MachODumper::getSymbolType(const SymbolRef &Symbol) const {
624 return Obj->is64Bit()
625 ? Obj->getSymbol64TableEntry(Symbol.getRawDataRefImpl()).n_type
626 : Obj->getSymbolTableEntry(Symbol.getRawDataRefImpl()).n_type;
627}
628
629bool MachODumper::compareSymbolsByName(SymbolRef LHS, SymbolRef RHS) const {
630 return getSymbolName(LHS).str().compare(getSymbolName(RHS).str()) < 0;
631}
632
633bool MachODumper::compareSymbolsByType(SymbolRef LHS, SymbolRef RHS) const {
634 return getSymbolType(LHS) < getSymbolType(RHS);
635}
636
637void MachODumper::printSymbols() { printSymbols(None); }
638
639void MachODumper::printSymbols(Optional<SymbolComparator> SymComp) {
640 ListScope Group(W, "Symbols");
641 if (SymComp) {
642 auto SymbolRange = Obj->symbols();
643 std::vector<SymbolRef> SortedSymbols(SymbolRange.begin(),
644 SymbolRange.end());
645 llvm::stable_sort(SortedSymbols, *SymComp);
646 for (SymbolRef Symbol : SortedSymbols)
647 printSymbol(Symbol);
648 } else {
649 for (const SymbolRef &Symbol : Obj->symbols()) {
650 printSymbol(Symbol);
651 }
652 }
653}
654
655void MachODumper::printDynamicSymbols() {
656 ListScope Group(W, "DynamicSymbols");
657}
658void MachODumper::printDynamicSymbols(Optional<SymbolComparator> SymComp) {
659 ListScope Group(W, "DynamicSymbols");
660}
661
662void MachODumper::printSymbol(const SymbolRef &Symbol) {
663 printSymbol(Symbol, W);
664}
665
666void MachODumper::printSymbol(const SymbolRef &Symbol, ScopedPrinter &W) {
667 StringRef SymbolName = getSymbolName(Symbol);
668
669 MachOSymbol MOSymbol;
670 getSymbol(Obj, Symbol.getRawDataRefImpl(), MOSymbol);
671
672 StringRef SectionName = "";
673 // Don't ask a Mach-O STABS symbol for its section unless we know that
674 // STAB symbol's section field refers to a valid section index. Otherwise
675 // the symbol may error trying to load a section that does not exist.
676 // TODO: Add a whitelist of STABS symbol types that contain valid section
677 // indices.
678 if (!(MOSymbol.Type & MachO::N_STAB)) {
679 Expected<section_iterator> SecIOrErr = Symbol.getSection();
680 if (!SecIOrErr)
681 reportError(SecIOrErr.takeError(), Obj->getFileName());
682
683 section_iterator SecI = *SecIOrErr;
684 if (SecI != Obj->section_end())
685 SectionName = unwrapOrError(Obj->getFileName(), SecI->getName());
686 }
687
688 DictScope D(W, "Symbol");
689 W.printNumber("Name", SymbolName, MOSymbol.StringIndex);
690 if (MOSymbol.Type & MachO::N_STAB) {
691 W.printHex("Type", "SymDebugTable", MOSymbol.Type);
692 } else {
693 if (MOSymbol.Type & MachO::N_PEXT)
694 W.startLine() << "PrivateExtern\n";
695 if (MOSymbol.Type & MachO::N_EXT)
696 W.startLine() << "Extern\n";
697 W.printEnum("Type", uint8_t(MOSymbol.Type & MachO::N_TYPE),
698 makeArrayRef(MachOSymbolTypes));
699 }
700 W.printHex("Section", SectionName, MOSymbol.SectionIndex);
701 W.printEnum("RefType", static_cast<uint16_t>(MOSymbol.Flags & 0x7),
702 makeArrayRef(MachOSymbolRefTypes));
703 W.printFlags("Flags", static_cast<uint16_t>(MOSymbol.Flags & ~0x7),
704 makeArrayRef(MachOSymbolFlags));
705 W.printHex("Value", MOSymbol.Value);
706}
707
708void MachODumper::printUnwindInfo() {
709 W.startLine() << "UnwindInfo not implemented.\n";
710}
711
712void MachODumper::printStackMap() const {
713 object::SectionRef StackMapSection;
714 for (auto Sec : Obj->sections()) {
715 StringRef Name;
716 if (Expected<StringRef> NameOrErr = Sec.getName())
717 Name = *NameOrErr;
718 else
719 consumeError(NameOrErr.takeError());
720
721 if (Name == "__llvm_stackmaps") {
722 StackMapSection = Sec;
723 break;
724 }
725 }
726
727 if (StackMapSection == object::SectionRef())
728 return;
729
730 StringRef StackMapContents =
731 unwrapOrError(Obj->getFileName(), StackMapSection.getContents());
732 ArrayRef<uint8_t> StackMapContentsArray =
733 arrayRefFromStringRef(StackMapContents);
734
735 if (Obj->isLittleEndian())
736 prettyPrintStackMap(
737 W, StackMapParser<support::little>(StackMapContentsArray));
738 else
739 prettyPrintStackMap(
740 W, StackMapParser<support::big>(StackMapContentsArray));
741}
742
743void MachODumper::printCGProfile() {
744 object::SectionRef CGProfileSection;
1
Calling defaulted default constructor for 'SectionRef'
→
3
←
Returning from default constructor for 'SectionRef'
→
745 for (auto Sec : Obj->sections()) {
746 StringRef Name;
747 if (Expected<StringRef> NameOrErr = Sec.getName())
748 Name = *NameOrErr;
749 else
750 consumeError(NameOrErr.takeError());
751
752 if (Name == "__cg_profile") {
753 CGProfileSection = Sec;
754 break;
755 }
756 }
757 if (CGProfileSection == object::SectionRef())
4
←
Taking false branch
→
758 return;
759
760 StringRef CGProfileContents =
761 unwrapOrError(Obj->getFileName(), CGProfileSection.getContents());
5
←
Calling 'SectionRef::getContents'
→
762 BinaryStreamReader Reader(CGProfileContents, Obj->isLittleEndian()
763 ? llvm::support::little
764 : llvm::support::big);
765
766 ListScope L(W, "CGProfile");
767 while (!Reader.empty()) {
768 uint32_t FromIndex, ToIndex;
769 uint64_t Count;
770 if (Error Err = Reader.readInteger(FromIndex))
771 reportError(std::move(Err), Obj->getFileName());
772 if (Error Err = Reader.readInteger(ToIndex))
773 reportError(std::move(Err), Obj->getFileName());
774 if (Error Err = Reader.readInteger(Count))
775 reportError(std::move(Err), Obj->getFileName());
776 DictScope D(W, "CGProfileEntry");
777 W.printNumber("From", getSymbolName(*Obj->getSymbolByIndex(FromIndex)),
778 FromIndex);
779 W.printNumber("To", getSymbolName(*Obj->getSymbolByIndex(ToIndex)),
780 ToIndex);
781 W.printNumber("Weight", Count);
782 }
783}
784
785void MachODumper::printNeededLibraries() {
786 ListScope D(W, "NeededLibraries");
787
788 using LibsTy = std::vector<StringRef>;
789 LibsTy Libs;
790
791 for (const auto &Command : Obj->load_commands()) {
792 if (Command.C.cmd == MachO::LC_LOAD_DYLIB ||
793 Command.C.cmd == MachO::LC_ID_DYLIB ||
794 Command.C.cmd == MachO::LC_LOAD_WEAK_DYLIB ||
795 Command.C.cmd == MachO::LC_REEXPORT_DYLIB ||
796 Command.C.cmd == MachO::LC_LAZY_LOAD_DYLIB ||
797 Command.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) {
798 MachO::dylib_command Dl = Obj->getDylibIDLoadCommand(Command);
799 if (Dl.dylib.name < Dl.cmdsize) {
800 auto *P = static_cast<const char*>(Command.Ptr) + Dl.dylib.name;
801 Libs.push_back(P);
802 }
803 }
804 }
805
806 llvm::stable_sort(Libs);
807
808 for (const auto &L : Libs) {
809 W.startLine() << L << "\n";
810 }
811}
812
813void MachODumper::printMachODataInCode() {
814 for (const auto &Load : Obj->load_commands()) {
815 if (Load.C.cmd == MachO::LC_DATA_IN_CODE) {
816 MachO::linkedit_data_command LLC = Obj->getLinkeditDataLoadCommand(Load);
817 DictScope Group(W, "DataInCode");
818 W.printNumber("Data offset", LLC.dataoff);
819 W.printNumber("Data size", LLC.datasize);
820 ListScope D(W, "Data entries");
821 unsigned NumRegions = LLC.datasize / sizeof(MachO::data_in_code_entry);
822 for (unsigned i = 0; i < NumRegions; ++i) {
823 MachO::data_in_code_entry DICE = Obj->getDataInCodeTableEntry(
824 LLC.dataoff, i);
825 DictScope Group(W, "Entry");
826 W.printNumber("Index", i);
827 W.printNumber("Offset", DICE.offset);
828 W.printNumber("Length", DICE.length);
829 W.printNumber("Kind", DICE.kind);
830 }
831 }
832 }
833}
834
835void MachODumper::printMachOVersionMin() {
836 for (const auto &Load : Obj->load_commands()) {
837 StringRef Cmd;
838 switch (Load.C.cmd) {
839 case MachO::LC_VERSION_MIN_MACOSX:
840 Cmd = "LC_VERSION_MIN_MACOSX";
841 break;
842 case MachO::LC_VERSION_MIN_IPHONEOS:
843 Cmd = "LC_VERSION_MIN_IPHONEOS";
844 break;
845 case MachO::LC_VERSION_MIN_TVOS:
846 Cmd = "LC_VERSION_MIN_TVOS";
847 break;
848 case MachO::LC_VERSION_MIN_WATCHOS:
849 Cmd = "LC_VERSION_MIN_WATCHOS";
850 break;
851 case MachO::LC_BUILD_VERSION:
852 Cmd = "LC_BUILD_VERSION";
853 break;
854 default:
855 continue;
856 }
857
858 DictScope Group(W, "MinVersion");
859 // Handle LC_BUILD_VERSION.
860 if (Load.C.cmd == MachO::LC_BUILD_VERSION) {
861 MachO::build_version_command BVC = Obj->getBuildVersionLoadCommand(Load);
862 W.printString("Cmd", Cmd);
863 W.printNumber("Size", BVC.cmdsize);
864 W.printString("Platform",
865 MachOObjectFile::getBuildPlatform(BVC.platform));
866 W.printString("Version", MachOObjectFile::getVersionString(BVC.minos));
867 if (BVC.sdk)
868 W.printString("SDK", MachOObjectFile::getVersionString(BVC.sdk));
869 else
870 W.printString("SDK", StringRef("n/a"));
871 continue;
872 }
873
874 MachO::version_min_command VMC = Obj->getVersionMinLoadCommand(Load);
875 W.printString("Cmd", Cmd);
876 W.printNumber("Size", VMC.cmdsize);
877 SmallString<32> Version;
878 Version = utostr(MachOObjectFile::getVersionMinMajor(VMC, false)) + "." +
879 utostr(MachOObjectFile::getVersionMinMinor(VMC, false));
880 uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, false);
881 if (Update != 0)
882 Version += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, false));
883 W.printString("Version", Version);
884 SmallString<32> SDK;
885 if (VMC.sdk == 0)
886 SDK = "n/a";
887 else {
888 SDK = utostr(MachOObjectFile::getVersionMinMajor(VMC, true)) + "." +
889 utostr(MachOObjectFile::getVersionMinMinor(VMC, true));
890 uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, true);
891 if (Update != 0)
892 SDK += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, true));
893 }
894 W.printString("SDK", SDK);
895 }
896}
897
898void MachODumper::printMachODysymtab() {
899 for (const auto &Load : Obj->load_commands()) {
900 if (Load.C.cmd == MachO::LC_DYSYMTAB) {
901 MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand();
902 DictScope Group(W, "Dysymtab");
903 W.printNumber("ilocalsym", DLC.ilocalsym);
904 W.printNumber("nlocalsym", DLC.nlocalsym);
905 W.printNumber("iextdefsym", DLC.iextdefsym);
906 W.printNumber("nextdefsym", DLC.nextdefsym);
907 W.printNumber("iundefsym", DLC.iundefsym);
908 W.printNumber("nundefsym", DLC.nundefsym);
909 W.printNumber("tocoff", DLC.tocoff);
910 W.printNumber("ntoc", DLC.ntoc);
911 W.printNumber("modtaboff", DLC.modtaboff);
912 W.printNumber("nmodtab", DLC.nmodtab);
913 W.printNumber("extrefsymoff", DLC.extrefsymoff);
914 W.printNumber("nextrefsyms", DLC.nextrefsyms);
915 W.printNumber("indirectsymoff", DLC.indirectsymoff);
916 W.printNumber("nindirectsyms", DLC.nindirectsyms);
917 W.printNumber("extreloff", DLC.extreloff);
918 W.printNumber("nextrel", DLC.nextrel);
919 W.printNumber("locreloff", DLC.locreloff);
920 W.printNumber("nlocrel", DLC.nlocrel);
921 }
922 }
923}
924
925void MachODumper::printMachOSegment() {
926 for (const auto &Load : Obj->load_commands()) {
927 if (Load.C.cmd == MachO::LC_SEGMENT || Load.C.cmd == MachO::LC_SEGMENT_64) {
928 MachOSegment MOSegment;
929 getSegment(Obj, Load, MOSegment);
930 DictScope Group(W, "Segment");
931 W.printString("Cmd", MOSegment.CmdName);
932 W.printString("Name", MOSegment.SegName);
933 W.printNumber("Size", MOSegment.cmdsize);
934 W.printHex("vmaddr", MOSegment.vmaddr);
935 W.printHex("vmsize", MOSegment.vmsize);
936 W.printNumber("fileoff", MOSegment.fileoff);
937 W.printNumber("filesize", MOSegment.filesize);
938 W.printString("maxprot", getMask(MOSegment.maxprot));
939 W.printString("initprot", getMask(MOSegment.initprot));
940 W.printNumber("nsects", MOSegment.nsects);
941 W.printHex("flags", MOSegment.flags);
942 }
943 }
944}
945
946void MachODumper::printMachOIndirectSymbols() {
947 for (const auto &Load : Obj->load_commands()) {
948 if (Load.C.cmd == MachO::LC_DYSYMTAB) {
949 MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand();
950 DictScope Group(W, "Indirect Symbols");
951 W.printNumber("Number", DLC.nindirectsyms);
952 ListScope D(W, "Symbols");
953 for (unsigned i = 0; i < DLC.nindirectsyms; ++i) {
954 DictScope Group(W, "Entry");
955 W.printNumber("Entry Index", i);
956 W.printHex("Symbol Index", Obj->getIndirectSymbolTableEntry(DLC, i));
957 }
958 }
959 }
960}
961
962void MachODumper::printMachOLinkerOptions() {
963 for (const auto &Load : Obj->load_commands()) {
964 if (Load.C.cmd == MachO::LC_LINKER_OPTION) {
965 MachO::linker_option_command LOLC = Obj->getLinkerOptionLoadCommand(Load);
966 DictScope Group(W, "Linker Options");
967 W.printNumber("Size", LOLC.cmdsize);
968 ListScope D(W, "Strings");
969 uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_option_command);
970 const char *P = Load.Ptr + sizeof(MachO::linker_option_command);
971 StringRef Data(P, DataSize);
972 for (unsigned i = 0; i < LOLC.count; ++i) {
973 std::pair<StringRef,StringRef> Split = Data.split('\0');
974 W.printString("Value", Split.first);
975 Data = Split.second;
976 }
977 }
978 }
979}
←

/build/llvm-toolchain-snapshot-15~++20220420111733+e13d2efed663/llvm/include/llvm/Object/ObjectFile.h

1//===- ObjectFile.h - File format independent object file -------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file declares a file format independent ObjectFile class.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_OBJECT_OBJECTFILE_H
14#define LLVM_OBJECT_OBJECTFILE_H
15
16#include "llvm/ADT/ArrayRef.h"
17#include "llvm/ADT/Hashing.h"
18#include "llvm/ADT/StringRef.h"
19#include "llvm/ADT/Triple.h"
20#include "llvm/ADT/iterator_range.h"
21#include "llvm/BinaryFormat/Magic.h"
22#include "llvm/BinaryFormat/Swift.h"
23#include "llvm/Object/Binary.h"
24#include "llvm/Object/Error.h"
25#include "llvm/Object/SymbolicFile.h"
26#include "llvm/Support/Casting.h"
27#include "llvm/Support/Error.h"
28#include "llvm/Support/MemoryBufferRef.h"
29#include <cassert>
30#include <cstdint>
31#include <memory>
32
33namespace llvm {
34
35class SubtargetFeatures;
36
37namespace object {
38
39class COFFObjectFile;
40class MachOObjectFile;
41class ObjectFile;
42class SectionRef;
43class SymbolRef;
44class symbol_iterator;
45class WasmObjectFile;
46
47using section_iterator = content_iterator<SectionRef>;
48
49/// This is a value type class that represents a single relocation in the list
50/// of relocations in the object file.
51class RelocationRef {
52 DataRefImpl RelocationPimpl;
53 const ObjectFile *OwningObject = nullptr;
54
55public:
56 RelocationRef() = default;
57 RelocationRef(DataRefImpl RelocationP, const ObjectFile *Owner);
58
59 bool operator==(const RelocationRef &Other) const;
60
61 void moveNext();
62
63 uint64_t getOffset() const;
64 symbol_iterator getSymbol() const;
65 uint64_t getType() const;
66
67 /// Get a string that represents the type of this relocation.
68 ///
69 /// This is for display purposes only.
70 void getTypeName(SmallVectorImpl<char> &Result) const;
71
72 DataRefImpl getRawDataRefImpl() const;
73 const ObjectFile *getObject() const;
74};
75
76using relocation_iterator = content_iterator<RelocationRef>;
77
78/// This is a value type class that represents a single section in the list of
79/// sections in the object file.
80class SectionRef {
81 friend class SymbolRef;
82
83 DataRefImpl SectionPimpl;
84 const ObjectFile *OwningObject = nullptr;
2
←
Null pointer value stored to 'CGProfileSection.OwningObject'
→
85
86public:
87 SectionRef() = default;
88 SectionRef(DataRefImpl SectionP, const ObjectFile *Owner);
89
90 bool operator==(const SectionRef &Other) const;
91 bool operator!=(const SectionRef &Other) const;
92 bool operator<(const SectionRef &Other) const;
93
94 void moveNext();
95
96 Expected<StringRef> getName() const;
97 uint64_t getAddress() const;
98 uint64_t getIndex() const;
99 uint64_t getSize() const;
100 Expected<StringRef> getContents() const;
101
102 /// Get the alignment of this section as the actual value (not log 2).
103 uint64_t getAlignment() const;
104
105 bool isCompressed() const;
106 /// Whether this section contains instructions.
107 bool isText() const;
108 /// Whether this section contains data, not instructions.
109 bool isData() const;
110 /// Whether this section contains BSS uninitialized data.
111 bool isBSS() const;
112 bool isVirtual() const;
113 bool isBitcode() const;
114 bool isStripped() const;
115
116 /// Whether this section will be placed in the text segment, according to the
117 /// Berkeley size format. This is true if the section is allocatable, and
118 /// contains either code or readonly data.
119 bool isBerkeleyText() const;
120 /// Whether this section will be placed in the data segment, according to the
121 /// Berkeley size format. This is true if the section is allocatable and
122 /// contains data (e.g. PROGBITS), but is not text.
123 bool isBerkeleyData() const;
124
125 /// Whether this section is a debug section.
126 bool isDebugSection() const;
127
128 bool containsSymbol(SymbolRef S) const;
129
130 relocation_iterator relocation_begin() const;
131 relocation_iterator relocation_end() const;
132 iterator_range<relocation_iterator> relocations() const {
133 return make_range(relocation_begin(), relocation_end());
134 }
135
136 /// Returns the related section if this section contains relocations. The
137 /// returned section may or may not have applied its relocations.
138 Expected<section_iterator> getRelocatedSection() const;
139
140 DataRefImpl getRawDataRefImpl() const;
141 const ObjectFile *getObject() const;
142};
143
144struct SectionedAddress {
145 const static uint64_t UndefSection = UINT64_MAX(18446744073709551615UL);
146
147 uint64_t Address = 0;
148 uint64_t SectionIndex = UndefSection;
149};
150
151inline bool operator<(const SectionedAddress &LHS,
152 const SectionedAddress &RHS) {
153 return std::tie(LHS.SectionIndex, LHS.Address) <
154 std::tie(RHS.SectionIndex, RHS.Address);
155}
156
157inline bool operator==(const SectionedAddress &LHS,
158 const SectionedAddress &RHS) {
159 return std::tie(LHS.SectionIndex, LHS.Address) ==
160 std::tie(RHS.SectionIndex, RHS.Address);
161}
162
163raw_ostream &operator<<(raw_ostream &OS, const SectionedAddress &Addr);
164
165/// This is a value type class that represents a single symbol in the list of
166/// symbols in the object file.
167class SymbolRef : public BasicSymbolRef {
168 friend class SectionRef;
169
170public:
171 enum Type {
172 ST_Unknown, // Type not specified
173 ST_Other,
174 ST_Data,
175 ST_Debug,
176 ST_File,
177 ST_Function,
178 };
179
180 SymbolRef() = default;
181 SymbolRef(DataRefImpl SymbolP, const ObjectFile *Owner);
182 SymbolRef(const BasicSymbolRef &B) : BasicSymbolRef(B) {
183 assert(isa<ObjectFile>(BasicSymbolRef::getObject()))(static_cast <bool> (isa<ObjectFile>(BasicSymbolRef
::getObject())) ? void (0) : __assert_fail ("isa<ObjectFile>(BasicSymbolRef::getObject())"
, "llvm/include/llvm/Object/ObjectFile.h", 183, __extension__
__PRETTY_FUNCTION__));
184 }
185
186 Expected<StringRef> getName() const;
187 /// Returns the symbol virtual address (i.e. address at which it will be
188 /// mapped).
189 Expected<uint64_t> getAddress() const;
190
191 /// Return the value of the symbol depending on the object this can be an
192 /// offset or a virtual address.
193 Expected<uint64_t> getValue() const;
194
195 /// Get the alignment of this symbol as the actual value (not log 2).
196 uint32_t getAlignment() const;
197 uint64_t getCommonSize() const;
198 Expected<SymbolRef::Type> getType() const;
199
200 /// Get section this symbol is defined in reference to. Result is
201 /// end_sections() if it is undefined or is an absolute symbol.
202 Expected<section_iterator> getSection() const;
203
204 const ObjectFile *getObject() const;
205};
206
207class symbol_iterator : public basic_symbol_iterator {
208public:
209 symbol_iterator(SymbolRef Sym) : basic_symbol_iterator(Sym) {}
210 symbol_iterator(const basic_symbol_iterator &B)
211 : basic_symbol_iterator(SymbolRef(B->getRawDataRefImpl(),
212 cast<ObjectFile>(B->getObject()))) {}
213
214 const SymbolRef *operator->() const {
215 const BasicSymbolRef &P = basic_symbol_iterator::operator *();
216 return static_cast<const SymbolRef*>(&P);
217 }
218
219 const SymbolRef &operator*() const {
220 const BasicSymbolRef &P = basic_symbol_iterator::operator *();
221 return static_cast<const SymbolRef&>(P);
222 }
223};
224
225/// This class is the base class for all object file types. Concrete instances
226/// of this object are created by createObjectFile, which figures out which type
227/// to create.
228class ObjectFile : public SymbolicFile {
229 virtual void anchor();
230
231protected:
232 ObjectFile(unsigned int Type, MemoryBufferRef Source);
233
234 const uint8_t *base() const {
235 return reinterpret_cast<const uint8_t *>(Data.getBufferStart());
236 }
237
238 // These functions are for SymbolRef to call internally. The main goal of
239 // this is to allow SymbolRef::SymbolPimpl to point directly to the symbol
240 // entry in the memory mapped object file. SymbolPimpl cannot contain any
241 // virtual functions because then it could not point into the memory mapped
242 // file.
243 //
244 // Implementations assume that the DataRefImpl is valid and has not been
245 // modified externally. It's UB otherwise.
246 friend class SymbolRef;
247
248 virtual Expected<StringRef> getSymbolName(DataRefImpl Symb) const = 0;
249 Error printSymbolName(raw_ostream &OS,
250 DataRefImpl Symb) const override;
251 virtual Expected<uint64_t> getSymbolAddress(DataRefImpl Symb) const = 0;
252 virtual uint64_t getSymbolValueImpl(DataRefImpl Symb) const = 0;
253 virtual uint32_t getSymbolAlignment(DataRefImpl Symb) const;
254 virtual uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const = 0;
255 virtual Expected<SymbolRef::Type> getSymbolType(DataRefImpl Symb) const = 0;
256 virtual Expected<section_iterator>
257 getSymbolSection(DataRefImpl Symb) const = 0;
258
259 // Same as above for SectionRef.
260 friend class SectionRef;
261
262 virtual void moveSectionNext(DataRefImpl &Sec) const = 0;
263 virtual Expected<StringRef> getSectionName(DataRefImpl Sec) const = 0;
264 virtual uint64_t getSectionAddress(DataRefImpl Sec) const = 0;
265 virtual uint64_t getSectionIndex(DataRefImpl Sec) const = 0;
266 virtual uint64_t getSectionSize(DataRefImpl Sec) const = 0;
267 virtual Expected<ArrayRef<uint8_t>>
268 getSectionContents(DataRefImpl Sec) const = 0;
269 virtual uint64_t getSectionAlignment(DataRefImpl Sec) const = 0;
270 virtual bool isSectionCompressed(DataRefImpl Sec) const = 0;
271 virtual bool isSectionText(DataRefImpl Sec) const = 0;
272 virtual bool isSectionData(DataRefImpl Sec) const = 0;
273 virtual bool isSectionBSS(DataRefImpl Sec) const = 0;
274 // A section is 'virtual' if its contents aren't present in the object image.
275 virtual bool isSectionVirtual(DataRefImpl Sec) const = 0;
276 virtual bool isSectionBitcode(DataRefImpl Sec) const;
277 virtual bool isSectionStripped(DataRefImpl Sec) const;
278 virtual bool isBerkeleyText(DataRefImpl Sec) const;
279 virtual bool isBerkeleyData(DataRefImpl Sec) const;
280 virtual bool isDebugSection(DataRefImpl Sec) const;
281 virtual relocation_iterator section_rel_begin(DataRefImpl Sec) const = 0;
282 virtual relocation_iterator section_rel_end(DataRefImpl Sec) const = 0;
283 virtual Expected<section_iterator> getRelocatedSection(DataRefImpl Sec) const;
284
285 // Same as above for RelocationRef.
286 friend class RelocationRef;
287 virtual void moveRelocationNext(DataRefImpl &Rel) const = 0;
288 virtual uint64_t getRelocationOffset(DataRefImpl Rel) const = 0;
289 virtual symbol_iterator getRelocationSymbol(DataRefImpl Rel) const = 0;
290 virtual uint64_t getRelocationType(DataRefImpl Rel) const = 0;
291 virtual void getRelocationTypeName(DataRefImpl Rel,
292 SmallVectorImpl<char> &Result) const = 0;
293
294 virtual llvm::binaryformat::Swift5ReflectionSectionKind
295 mapReflectionSectionNameToEnumValue(StringRef SectionName) const {
296 return llvm::binaryformat::Swift5ReflectionSectionKind::unknown;
297 };
298
299 Expected<uint64_t> getSymbolValue(DataRefImpl Symb) const;
300
301public:
302 ObjectFile() = delete;
303 ObjectFile(const ObjectFile &other) = delete;
304
305 uint64_t getCommonSymbolSize(DataRefImpl Symb) const {
306 Expected<uint32_t> SymbolFlagsOrErr = getSymbolFlags(Symb);
307 if (!SymbolFlagsOrErr)
308 // TODO: Actually report errors helpfully.
309 report_fatal_error(SymbolFlagsOrErr.takeError());
310 assert(*SymbolFlagsOrErr & SymbolRef::SF_Common)(static_cast <bool> (*SymbolFlagsOrErr & SymbolRef::
SF_Common) ? void (0) : __assert_fail ("*SymbolFlagsOrErr & SymbolRef::SF_Common"
, "llvm/include/llvm/Object/ObjectFile.h", 310, __extension__
__PRETTY_FUNCTION__));
311 return getCommonSymbolSizeImpl(Symb);
312 }
313
314 virtual std::vector<SectionRef> dynamic_relocation_sections() const {
315 return std::vector<SectionRef>();
316 }
317
318 using symbol_iterator_range = iterator_range<symbol_iterator>;
319 symbol_iterator_range symbols() const {
320 return symbol_iterator_range(symbol_begin(), symbol_end());
321 }
322
323 virtual section_iterator section_begin() const = 0;
324 virtual section_iterator section_end() const = 0;
325
326 using section_iterator_range = iterator_range<section_iterator>;
327 section_iterator_range sections() const {
328 return section_iterator_range(section_begin(), section_end());
329 }
330
331 /// The number of bytes used to represent an address in this object
332 /// file format.
333 virtual uint8_t getBytesInAddress() const = 0;
334
335 virtual StringRef getFileFormatName() const = 0;
336 virtual Triple::ArchType getArch() const = 0;
337 virtual SubtargetFeatures getFeatures() const = 0;
338 virtual Optional<StringRef> tryGetCPUName() const { return None; };
339 virtual void setARMSubArch(Triple &TheTriple) const { }
340 virtual Expected<uint64_t> getStartAddress() const {
341 return errorCodeToError(object_error::parse_failed);
342 };
343
344 /// Create a triple from the data in this object file.
345 Triple makeTriple() const;
346
347 /// Maps a debug section name to a standard DWARF section name.
348 virtual StringRef mapDebugSectionName(StringRef Name) const { return Name; }
349
350 /// True if this is a relocatable object (.o/.obj).
351 virtual bool isRelocatableObject() const = 0;
352
353 /// True if the reflection section can be stripped by the linker.
354 bool isReflectionSectionStrippable(
355 llvm::binaryformat::Swift5ReflectionSectionKind ReflectionSectionKind)
356 const;
357
358 /// @returns Pointer to ObjectFile subclass to handle this type of object.
359 /// @param ObjectPath The path to the object file. ObjectPath.isObject must
360 /// return true.
361 /// Create ObjectFile from path.
362 static Expected<OwningBinary<ObjectFile>>
363 createObjectFile(StringRef ObjectPath);
364
365 static Expected<std::unique_ptr<ObjectFile>>
366 createObjectFile(MemoryBufferRef Object, llvm::file_magic Type,
367 bool InitContent = true);
368 static Expected<std::unique_ptr<ObjectFile>>
369 createObjectFile(MemoryBufferRef Object) {
370 return createObjectFile(Object, llvm::file_magic::unknown);
371 }
372
373 static bool classof(const Binary *v) {
374 return v->isObject();
375 }
376
377 static Expected<std::unique_ptr<COFFObjectFile>>
378 createCOFFObjectFile(MemoryBufferRef Object);
379
380 static Expected<std::unique_ptr<ObjectFile>>
381 createXCOFFObjectFile(MemoryBufferRef Object, unsigned FileType);
382
383 static Expected<std::unique_ptr<ObjectFile>>
384 createELFObjectFile(MemoryBufferRef Object, bool InitContent = true);
385
386 static Expected<std::unique_ptr<MachOObjectFile>>
387 createMachOObjectFile(MemoryBufferRef Object,
388 uint32_t UniversalCputype = 0,
389 uint32_t UniversalIndex = 0);
390
391 static Expected<std::unique_ptr<WasmObjectFile>>
392 createWasmObjectFile(MemoryBufferRef Object);
393};
394
395// Inline function definitions.
396inline SymbolRef::SymbolRef(DataRefImpl SymbolP, const ObjectFile *Owner)
397 : BasicSymbolRef(SymbolP, Owner) {}
398
399inline Expected<StringRef> SymbolRef::getName() const {
400 return getObject()->getSymbolName(getRawDataRefImpl());
401}
402
403inline Expected<uint64_t> SymbolRef::getAddress() const {
404 return getObject()->getSymbolAddress(getRawDataRefImpl());
405}
406
407inline Expected<uint64_t> SymbolRef::getValue() const {
408 return getObject()->getSymbolValue(getRawDataRefImpl());
409}
410
411inline uint32_t SymbolRef::getAlignment() const {
412 return getObject()->getSymbolAlignment(getRawDataRefImpl());
413}
414
415inline uint64_t SymbolRef::getCommonSize() const {
416 return getObject()->getCommonSymbolSize(getRawDataRefImpl());
417}
418
419inline Expected<section_iterator> SymbolRef::getSection() const {
420 return getObject()->getSymbolSection(getRawDataRefImpl());
421}
422
423inline Expected<SymbolRef::Type> SymbolRef::getType() const {
424 return getObject()->getSymbolType(getRawDataRefImpl());
425}
426
427inline const ObjectFile *SymbolRef::getObject() const {
428 const SymbolicFile *O = BasicSymbolRef::getObject();
429 return cast<ObjectFile>(O);
430}
431
432/// SectionRef
433inline SectionRef::SectionRef(DataRefImpl SectionP,
434 const ObjectFile *Owner)
435 : SectionPimpl(SectionP)
436 , OwningObject(Owner) {}
437
438inline bool SectionRef::operator==(const SectionRef &Other) const {
439 return OwningObject == Other.OwningObject &&
440 SectionPimpl == Other.SectionPimpl;
441}
442
443inline bool SectionRef::operator!=(const SectionRef &Other) const {
444 return !(*this == Other);
445}
446
447inline bool SectionRef::operator<(const SectionRef &Other) const {
448 assert(OwningObject == Other.OwningObject)(static_cast <bool> (OwningObject == Other.OwningObject
) ? void (0) : __assert_fail ("OwningObject == Other.OwningObject"
, "llvm/include/llvm/Object/ObjectFile.h", 448, __extension__
__PRETTY_FUNCTION__));
449 return SectionPimpl < Other.SectionPimpl;
450}
451
452inline void SectionRef::moveNext() {
453 return OwningObject->moveSectionNext(SectionPimpl);
454}
455
456inline Expected<StringRef> SectionRef::getName() const {
457 return OwningObject->getSectionName(SectionPimpl);
458}
459
460inline uint64_t SectionRef::getAddress() const {
461 return OwningObject->getSectionAddress(SectionPimpl);
462}
463
464inline uint64_t SectionRef::getIndex() const {
465 return OwningObject->getSectionIndex(SectionPimpl);
466}
467
468inline uint64_t SectionRef::getSize() const {
469 return OwningObject->getSectionSize(SectionPimpl);
470}
471
472inline Expected<StringRef> SectionRef::getContents() const {
473 Expected<ArrayRef<uint8_t>> Res =
474 OwningObject->getSectionContents(SectionPimpl);
6
←
Called C++ object pointer is null
475 if (!Res)
476 return Res.takeError();
477 return StringRef(reinterpret_cast<const char *>(Res->data()), Res->size());
478}
479
480inline uint64_t SectionRef::getAlignment() const {
481 return OwningObject->getSectionAlignment(SectionPimpl);
482}
483
484inline bool SectionRef::isCompressed() const {
485 return OwningObject->isSectionCompressed(SectionPimpl);
486}
487
488inline bool SectionRef::isText() const {
489 return OwningObject->isSectionText(SectionPimpl);
490}
491
492inline bool SectionRef::isData() const {
493 return OwningObject->isSectionData(SectionPimpl);
494}
495
496inline bool SectionRef::isBSS() const {
497 return OwningObject->isSectionBSS(SectionPimpl);
498}
499
500inline bool SectionRef::isVirtual() const {
501 return OwningObject->isSectionVirtual(SectionPimpl);
502}
503
504inline bool SectionRef::isBitcode() const {
505 return OwningObject->isSectionBitcode(SectionPimpl);
506}
507
508inline bool SectionRef::isStripped() const {
509 return OwningObject->isSectionStripped(SectionPimpl);
510}
511
512inline bool SectionRef::isBerkeleyText() const {
513 return OwningObject->isBerkeleyText(SectionPimpl);
514}
515
516inline bool SectionRef::isBerkeleyData() const {
517 return OwningObject->isBerkeleyData(SectionPimpl);
518}
519
520inline bool SectionRef::isDebugSection() const {
521 return OwningObject->isDebugSection(SectionPimpl);
522}
523
524inline relocation_iterator SectionRef::relocation_begin() const {
525 return OwningObject->section_rel_begin(SectionPimpl);
526}
527
528inline relocation_iterator SectionRef::relocation_end() const {
529 return OwningObject->section_rel_end(SectionPimpl);
530}
531
532inline Expected<section_iterator> SectionRef::getRelocatedSection() const {
533 return OwningObject->getRelocatedSection(SectionPimpl);
534}
535
536inline DataRefImpl SectionRef::getRawDataRefImpl() const {
537 return SectionPimpl;
538}
539
540inline const ObjectFile *SectionRef::getObject() const {
541 return OwningObject;
542}
543
544/// RelocationRef
545inline RelocationRef::RelocationRef(DataRefImpl RelocationP,
546 const ObjectFile *Owner)
547 : RelocationPimpl(RelocationP)
548 , OwningObject(Owner) {}
549
550inline bool RelocationRef::operator==(const RelocationRef &Other) const {
551 return RelocationPimpl == Other.RelocationPimpl;
552}
553
554inline void RelocationRef::moveNext() {
555 return OwningObject->moveRelocationNext(RelocationPimpl);
556}
557
558inline uint64_t RelocationRef::getOffset() const {
559 return OwningObject->getRelocationOffset(RelocationPimpl);
560}
561
562inline symbol_iterator RelocationRef::getSymbol() const {
563 return OwningObject->getRelocationSymbol(RelocationPimpl);
564}
565
566inline uint64_t RelocationRef::getType() const {
567 return OwningObject->getRelocationType(RelocationPimpl);
568}
569
570inline void RelocationRef::getTypeName(SmallVectorImpl<char> &Result) const {
571 return OwningObject->getRelocationTypeName(RelocationPimpl, Result);
572}
573
574inline DataRefImpl RelocationRef::getRawDataRefImpl() const {
575 return RelocationPimpl;
576}
577
578inline const ObjectFile *RelocationRef::getObject() const {
579 return OwningObject;
580}
581
582} // end namespace object
583
584template <> struct DenseMapInfo<object::SectionRef> {
585 static bool isEqual(const object::SectionRef &A,
586 const object::SectionRef &B) {
587 return A == B;
588 }
589 static object::SectionRef getEmptyKey() {
590 return object::SectionRef({}, nullptr);
591 }
592 static object::SectionRef getTombstoneKey() {
593 object::DataRefImpl TS;
594 TS.p = (uintptr_t)-1;
595 return object::SectionRef(TS, nullptr);
596 }
597 static unsigned getHashValue(const object::SectionRef &Sec) {
598 object::DataRefImpl Raw = Sec.getRawDataRefImpl();
599 return hash_combine(Raw.p, Raw.d.a, Raw.d.b);
600 }
601};
602
603} // end namespace llvm
604
605#endif // LLVM_OBJECT_OBJECTFILE_H