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author | Simon Atanasyan <simon@atanasyan.com> | 2014-04-11 04:13:39 +0000 |
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committer | Simon Atanasyan <simon@atanasyan.com> | 2014-04-11 04:13:39 +0000 |
commit | eb0c9094acd5f5a28c0adafb1784797d1d7a4e2d (patch) | |
tree | d94849c02e0a4a546c075081bb4ace35f0ea2937 /lib/Object | |
parent | 77cf856e56dc568ebe760e7de820323fdcf825a4 (diff) | |
download | llvm-eb0c9094acd5f5a28c0adafb1784797d1d7a4e2d.tar.gz llvm-eb0c9094acd5f5a28c0adafb1784797d1d7a4e2d.tar.bz2 llvm-eb0c9094acd5f5a28c0adafb1784797d1d7a4e2d.tar.xz |
[yaml2obj][ELF] ELF Relocations Support.
The patch implements support for both relocation record formats: Elf_Rel
and Elf_Rela. It is possible to define relocation against symbol only.
Relocations against sections will be implemented later. Now yaml2obj
recognizes X86_64, MIPS and Hexagon relocation types.
Example of relocation section specification:
Sections:
- Name: .text
Type: SHT_PROGBITS
Content: "0000000000000000"
AddressAlign: 16
Flags: [SHF_ALLOC]
- Name: .rel.text
Type: SHT_REL
Info: .text
AddressAlign: 4
Relocations:
- Offset: 0x1
Symbol: glob1
Type: R_MIPS_32
- Offset: 0x2
Symbol: glob2
Type: R_MIPS_CALL16
The patch reviewed by Michael Spencer, Sean Silva, Shankar Easwaran.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206017 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Object')
-rw-r--r-- | lib/Object/ELFYAML.cpp | 259 |
1 files changed, 256 insertions, 3 deletions
diff --git a/lib/Object/ELFYAML.cpp b/lib/Object/ELFYAML.cpp index d51367026a..59d9c06f37 100644 --- a/lib/Object/ELFYAML.cpp +++ b/lib/Object/ELFYAML.cpp @@ -334,6 +334,218 @@ void ScalarEnumerationTraits<ELFYAML::ELF_STT>::enumeration( #undef ECase } +void ScalarEnumerationTraits<ELFYAML::ELF_REL>::enumeration( + IO &IO, ELFYAML::ELF_REL &Value) { + const auto *Object = static_cast<ELFYAML::Object *>(IO.getContext()); + assert(Object && "The IO context is not initialized"); +#define ECase(X) IO.enumCase(Value, #X, ELF::X); + switch (Object->Header.Machine) { + case ELF::EM_X86_64: + ECase(R_X86_64_NONE) + ECase(R_X86_64_64) + ECase(R_X86_64_PC32) + ECase(R_X86_64_GOT32) + ECase(R_X86_64_PLT32) + ECase(R_X86_64_COPY) + ECase(R_X86_64_GLOB_DAT) + ECase(R_X86_64_JUMP_SLOT) + ECase(R_X86_64_RELATIVE) + ECase(R_X86_64_GOTPCREL) + ECase(R_X86_64_32) + ECase(R_X86_64_32S) + ECase(R_X86_64_16) + ECase(R_X86_64_PC16) + ECase(R_X86_64_8) + ECase(R_X86_64_PC8) + ECase(R_X86_64_DTPMOD64) + ECase(R_X86_64_DTPOFF64) + ECase(R_X86_64_TPOFF64) + ECase(R_X86_64_TLSGD) + ECase(R_X86_64_TLSLD) + ECase(R_X86_64_DTPOFF32) + ECase(R_X86_64_GOTTPOFF) + ECase(R_X86_64_TPOFF32) + ECase(R_X86_64_PC64) + ECase(R_X86_64_GOTOFF64) + ECase(R_X86_64_GOTPC32) + ECase(R_X86_64_GOT64) + ECase(R_X86_64_GOTPCREL64) + ECase(R_X86_64_GOTPC64) + ECase(R_X86_64_GOTPLT64) + ECase(R_X86_64_PLTOFF64) + ECase(R_X86_64_SIZE32) + ECase(R_X86_64_SIZE64) + ECase(R_X86_64_GOTPC32_TLSDESC) + ECase(R_X86_64_TLSDESC_CALL) + ECase(R_X86_64_TLSDESC) + ECase(R_X86_64_IRELATIVE) + break; + case ELF::EM_MIPS: + ECase(R_MIPS_NONE) + ECase(R_MIPS_16) + ECase(R_MIPS_32) + ECase(R_MIPS_REL32) + ECase(R_MIPS_26) + ECase(R_MIPS_HI16) + ECase(R_MIPS_LO16) + ECase(R_MIPS_GPREL16) + ECase(R_MIPS_LITERAL) + ECase(R_MIPS_GOT16) + ECase(R_MIPS_PC16) + ECase(R_MIPS_CALL16) + ECase(R_MIPS_GPREL32) + ECase(R_MIPS_UNUSED1) + ECase(R_MIPS_UNUSED2) + ECase(R_MIPS_SHIFT5) + ECase(R_MIPS_SHIFT6) + ECase(R_MIPS_64) + ECase(R_MIPS_GOT_DISP) + ECase(R_MIPS_GOT_PAGE) + ECase(R_MIPS_GOT_OFST) + ECase(R_MIPS_GOT_HI16) + ECase(R_MIPS_GOT_LO16) + ECase(R_MIPS_SUB) + ECase(R_MIPS_INSERT_A) + ECase(R_MIPS_INSERT_B) + ECase(R_MIPS_DELETE) + ECase(R_MIPS_HIGHER) + ECase(R_MIPS_HIGHEST) + ECase(R_MIPS_CALL_HI16) + ECase(R_MIPS_CALL_LO16) + ECase(R_MIPS_SCN_DISP) + ECase(R_MIPS_REL16) + ECase(R_MIPS_ADD_IMMEDIATE) + ECase(R_MIPS_PJUMP) + ECase(R_MIPS_RELGOT) + ECase(R_MIPS_JALR) + ECase(R_MIPS_TLS_DTPMOD32) + ECase(R_MIPS_TLS_DTPREL32) + ECase(R_MIPS_TLS_DTPMOD64) + ECase(R_MIPS_TLS_DTPREL64) + ECase(R_MIPS_TLS_GD) + ECase(R_MIPS_TLS_LDM) + ECase(R_MIPS_TLS_DTPREL_HI16) + ECase(R_MIPS_TLS_DTPREL_LO16) + ECase(R_MIPS_TLS_GOTTPREL) + ECase(R_MIPS_TLS_TPREL32) + ECase(R_MIPS_TLS_TPREL64) + ECase(R_MIPS_TLS_TPREL_HI16) + ECase(R_MIPS_TLS_TPREL_LO16) + ECase(R_MIPS_GLOB_DAT) + ECase(R_MIPS_COPY) + ECase(R_MIPS_JUMP_SLOT) + ECase(R_MICROMIPS_26_S1) + ECase(R_MICROMIPS_HI16) + ECase(R_MICROMIPS_LO16) + ECase(R_MICROMIPS_GOT16) + ECase(R_MICROMIPS_PC16_S1) + ECase(R_MICROMIPS_CALL16) + ECase(R_MICROMIPS_GOT_DISP) + ECase(R_MICROMIPS_GOT_PAGE) + ECase(R_MICROMIPS_GOT_OFST) + ECase(R_MICROMIPS_TLS_GD) + ECase(R_MICROMIPS_TLS_LDM) + ECase(R_MICROMIPS_TLS_DTPREL_HI16) + ECase(R_MICROMIPS_TLS_DTPREL_LO16) + ECase(R_MICROMIPS_TLS_TPREL_HI16) + ECase(R_MICROMIPS_TLS_TPREL_LO16) + ECase(R_MIPS_NUM) + ECase(R_MIPS_PC32) + break; + case ELF::EM_HEXAGON: + ECase(R_HEX_NONE) + ECase(R_HEX_B22_PCREL) + ECase(R_HEX_B15_PCREL) + ECase(R_HEX_B7_PCREL) + ECase(R_HEX_LO16) + ECase(R_HEX_HI16) + ECase(R_HEX_32) + ECase(R_HEX_16) + ECase(R_HEX_8) + ECase(R_HEX_GPREL16_0) + ECase(R_HEX_GPREL16_1) + ECase(R_HEX_GPREL16_2) + ECase(R_HEX_GPREL16_3) + ECase(R_HEX_HL16) + ECase(R_HEX_B13_PCREL) + ECase(R_HEX_B9_PCREL) + ECase(R_HEX_B32_PCREL_X) + ECase(R_HEX_32_6_X) + ECase(R_HEX_B22_PCREL_X) + ECase(R_HEX_B15_PCREL_X) + ECase(R_HEX_B13_PCREL_X) + ECase(R_HEX_B9_PCREL_X) + ECase(R_HEX_B7_PCREL_X) + ECase(R_HEX_16_X) + ECase(R_HEX_12_X) + ECase(R_HEX_11_X) + ECase(R_HEX_10_X) + ECase(R_HEX_9_X) + ECase(R_HEX_8_X) + ECase(R_HEX_7_X) + ECase(R_HEX_6_X) + ECase(R_HEX_32_PCREL) + ECase(R_HEX_COPY) + ECase(R_HEX_GLOB_DAT) + ECase(R_HEX_JMP_SLOT) + ECase(R_HEX_RELATIVE) + ECase(R_HEX_PLT_B22_PCREL) + ECase(R_HEX_GOTREL_LO16) + ECase(R_HEX_GOTREL_HI16) + ECase(R_HEX_GOTREL_32) + ECase(R_HEX_GOT_LO16) + ECase(R_HEX_GOT_HI16) + ECase(R_HEX_GOT_32) + ECase(R_HEX_GOT_16) + ECase(R_HEX_DTPMOD_32) + ECase(R_HEX_DTPREL_LO16) + ECase(R_HEX_DTPREL_HI16) + ECase(R_HEX_DTPREL_32) + ECase(R_HEX_DTPREL_16) + ECase(R_HEX_GD_PLT_B22_PCREL) + ECase(R_HEX_GD_GOT_LO16) + ECase(R_HEX_GD_GOT_HI16) + ECase(R_HEX_GD_GOT_32) + ECase(R_HEX_GD_GOT_16) + ECase(R_HEX_IE_LO16) + ECase(R_HEX_IE_HI16) + ECase(R_HEX_IE_32) + ECase(R_HEX_IE_GOT_LO16) + ECase(R_HEX_IE_GOT_HI16) + ECase(R_HEX_IE_GOT_32) + ECase(R_HEX_IE_GOT_16) + ECase(R_HEX_TPREL_LO16) + ECase(R_HEX_TPREL_HI16) + ECase(R_HEX_TPREL_32) + ECase(R_HEX_TPREL_16) + ECase(R_HEX_6_PCREL_X) + ECase(R_HEX_GOTREL_32_6_X) + ECase(R_HEX_GOTREL_16_X) + ECase(R_HEX_GOTREL_11_X) + ECase(R_HEX_GOT_32_6_X) + ECase(R_HEX_GOT_16_X) + ECase(R_HEX_GOT_11_X) + ECase(R_HEX_DTPREL_32_6_X) + ECase(R_HEX_DTPREL_16_X) + ECase(R_HEX_DTPREL_11_X) + ECase(R_HEX_GD_GOT_32_6_X) + ECase(R_HEX_GD_GOT_16_X) + ECase(R_HEX_GD_GOT_11_X) + ECase(R_HEX_IE_32_6_X) + ECase(R_HEX_IE_16_X) + ECase(R_HEX_IE_GOT_32_6_X) + ECase(R_HEX_IE_GOT_16_X) + ECase(R_HEX_IE_GOT_11_X) + ECase(R_HEX_TPREL_32_6_X) + ECase(R_HEX_TPREL_16_X) + ECase(R_HEX_TPREL_11_X) + break; + default: + llvm_unreachable("Unsupported architecture"); + } +#undef ECase +} + void MappingTraits<ELFYAML::FileHeader>::mapping(IO &IO, ELFYAML::FileHeader &FileHdr) { IO.mapRequired("Class", FileHdr.Class); @@ -360,21 +572,62 @@ void MappingTraits<ELFYAML::LocalGlobalWeakSymbols>::mapping( IO.mapOptional("Weak", Symbols.Weak); } -void MappingTraits<ELFYAML::Section>::mapping(IO &IO, - ELFYAML::Section &Section) { +static void commonSectionMapping(IO &IO, ELFYAML::Section &Section) { IO.mapOptional("Name", Section.Name, StringRef()); IO.mapRequired("Type", Section.Type); IO.mapOptional("Flags", Section.Flags, ELFYAML::ELF_SHF(0)); IO.mapOptional("Address", Section.Address, Hex64(0)); - IO.mapOptional("Content", Section.Content); IO.mapOptional("Link", Section.Link); + IO.mapOptional("Info", Section.Info); IO.mapOptional("AddressAlign", Section.AddressAlign, Hex64(0)); } +static void sectionMapping(IO &IO, ELFYAML::RawContentSection &Section) { + commonSectionMapping(IO, Section); + IO.mapOptional("Content", Section.Content); +} + +static void sectionMapping(IO &IO, ELFYAML::RelocationSection &Section) { + commonSectionMapping(IO, Section); + IO.mapOptional("Relocations", Section.Relocations); +} + +void MappingTraits<std::unique_ptr<ELFYAML::Section>>::mapping( + IO &IO, std::unique_ptr<ELFYAML::Section> &Section) { + ELFYAML::ELF_SHT sectionType; + if (IO.outputting()) + sectionType = Section->Type; + IO.mapRequired("Type", sectionType); + + switch (sectionType) { + case ELF::SHT_REL: + case ELF::SHT_RELA: + if (!IO.outputting()) + Section.reset(new ELFYAML::RelocationSection()); + sectionMapping(IO, *cast<ELFYAML::RelocationSection>(Section.get())); + break; + default: + if (!IO.outputting()) + Section.reset(new ELFYAML::RawContentSection()); + sectionMapping(IO, *cast<ELFYAML::RawContentSection>(Section.get())); + } +} + +void MappingTraits<ELFYAML::Relocation>::mapping(IO &IO, + ELFYAML::Relocation &Rel) { + IO.mapRequired("Offset", Rel.Offset); + IO.mapRequired("Symbol", Rel.Symbol); + IO.mapRequired("Type", Rel.Type); + IO.mapOptional("Addend", Rel.Addend); +} + void MappingTraits<ELFYAML::Object>::mapping(IO &IO, ELFYAML::Object &Object) { + assert(!IO.getContext() && "The IO context is initialized already"); + IO.setContext(&Object); IO.mapRequired("FileHeader", Object.Header); IO.mapOptional("Sections", Object.Sections); IO.mapOptional("Symbols", Object.Symbols); + IO.setContext(nullptr); } } // end namespace yaml |