diff options
Diffstat (limited to 'contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ELFHeader.cpp')
| -rw-r--r-- | contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ELFHeader.cpp | 607 |
1 files changed, 265 insertions, 342 deletions
diff --git a/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ELFHeader.cpp b/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ELFHeader.cpp index 625cce3..a3e8239 100644 --- a/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ELFHeader.cpp +++ b/contrib/llvm/tools/lldb/source/Plugins/ObjectFile/ELF/ELFHeader.cpp @@ -24,240 +24,201 @@ using namespace llvm::ELF; // // GetMaxU64 and GetMaxS64 wrap the similarly named methods from DataExtractor // with error handling code and provide for parsing a sequence of values. -static bool -GetMaxU64(const lldb_private::DataExtractor &data, - lldb::offset_t *offset, - uint64_t *value, - uint32_t byte_size) -{ - const lldb::offset_t saved_offset = *offset; - *value = data.GetMaxU64(offset, byte_size); - return *offset != saved_offset; +static bool GetMaxU64(const lldb_private::DataExtractor &data, + lldb::offset_t *offset, uint64_t *value, + uint32_t byte_size) { + const lldb::offset_t saved_offset = *offset; + *value = data.GetMaxU64(offset, byte_size); + return *offset != saved_offset; } -static bool -GetMaxU64(const lldb_private::DataExtractor &data, - lldb::offset_t *offset, - uint64_t *value, - uint32_t byte_size, - uint32_t count) -{ - lldb::offset_t saved_offset = *offset; - - for (uint32_t i = 0; i < count; ++i, ++value) - { - if (GetMaxU64(data, offset, value, byte_size) == false) - { - *offset = saved_offset; - return false; - } +static bool GetMaxU64(const lldb_private::DataExtractor &data, + lldb::offset_t *offset, uint64_t *value, + uint32_t byte_size, uint32_t count) { + lldb::offset_t saved_offset = *offset; + + for (uint32_t i = 0; i < count; ++i, ++value) { + if (GetMaxU64(data, offset, value, byte_size) == false) { + *offset = saved_offset; + return false; } - return true; + } + return true; } -static bool -GetMaxS64(const lldb_private::DataExtractor &data, - lldb::offset_t *offset, - int64_t *value, - uint32_t byte_size) -{ - const lldb::offset_t saved_offset = *offset; - *value = data.GetMaxS64(offset, byte_size); - return *offset != saved_offset; +static bool GetMaxS64(const lldb_private::DataExtractor &data, + lldb::offset_t *offset, int64_t *value, + uint32_t byte_size) { + const lldb::offset_t saved_offset = *offset; + *value = data.GetMaxS64(offset, byte_size); + return *offset != saved_offset; } -static bool -GetMaxS64(const lldb_private::DataExtractor &data, - lldb::offset_t *offset, - int64_t *value, - uint32_t byte_size, - uint32_t count) -{ - lldb::offset_t saved_offset = *offset; - - for (uint32_t i = 0; i < count; ++i, ++value) - { - if (GetMaxS64(data, offset, value, byte_size) == false) - { - *offset = saved_offset; - return false; - } +static bool GetMaxS64(const lldb_private::DataExtractor &data, + lldb::offset_t *offset, int64_t *value, + uint32_t byte_size, uint32_t count) { + lldb::offset_t saved_offset = *offset; + + for (uint32_t i = 0; i < count; ++i, ++value) { + if (GetMaxS64(data, offset, value, byte_size) == false) { + *offset = saved_offset; + return false; } - return true; + } + return true; } //------------------------------------------------------------------------------ // ELFHeader -ELFHeader::ELFHeader() -{ - memset(this, 0, sizeof(ELFHeader)); -} +ELFHeader::ELFHeader() { memset(this, 0, sizeof(ELFHeader)); } -ByteOrder -ELFHeader::GetByteOrder() const -{ - if (e_ident[EI_DATA] == ELFDATA2MSB) - return eByteOrderBig; - if (e_ident[EI_DATA] == ELFDATA2LSB) - return eByteOrderLittle; - return eByteOrderInvalid; +ByteOrder ELFHeader::GetByteOrder() const { + if (e_ident[EI_DATA] == ELFDATA2MSB) + return eByteOrderBig; + if (e_ident[EI_DATA] == ELFDATA2LSB) + return eByteOrderLittle; + return eByteOrderInvalid; } -bool -ELFHeader::Parse(lldb_private::DataExtractor &data, lldb::offset_t *offset) -{ - // Read e_ident. This provides byte order and address size info. - if (data.GetU8(offset, &e_ident, EI_NIDENT) == NULL) - return false; +bool ELFHeader::Parse(lldb_private::DataExtractor &data, + lldb::offset_t *offset) { + // Read e_ident. This provides byte order and address size info. + if (data.GetU8(offset, &e_ident, EI_NIDENT) == NULL) + return false; - const unsigned byte_size = Is32Bit() ? 4 : 8; - data.SetByteOrder(GetByteOrder()); - data.SetAddressByteSize(byte_size); + const unsigned byte_size = Is32Bit() ? 4 : 8; + data.SetByteOrder(GetByteOrder()); + data.SetAddressByteSize(byte_size); - // Read e_type and e_machine. - if (data.GetU16(offset, &e_type, 2) == NULL) - return false; + // Read e_type and e_machine. + if (data.GetU16(offset, &e_type, 2) == NULL) + return false; - // Read e_version. - if (data.GetU32(offset, &e_version, 1) == NULL) - return false; + // Read e_version. + if (data.GetU32(offset, &e_version, 1) == NULL) + return false; - // Read e_entry, e_phoff and e_shoff. - if (GetMaxU64(data, offset, &e_entry, byte_size, 3) == false) - return false; + // Read e_entry, e_phoff and e_shoff. + if (GetMaxU64(data, offset, &e_entry, byte_size, 3) == false) + return false; - // Read e_flags. - if (data.GetU32(offset, &e_flags, 1) == NULL) - return false; + // Read e_flags. + if (data.GetU32(offset, &e_flags, 1) == NULL) + return false; - // Read e_ehsize, e_phentsize, e_phnum, e_shentsize, e_shnum and - // e_shstrndx. - if (data.GetU16(offset, &e_ehsize, 6) == NULL) - return false; + // Read e_ehsize, e_phentsize, e_phnum, e_shentsize, e_shnum and + // e_shstrndx. + if (data.GetU16(offset, &e_ehsize, 6) == NULL) + return false; - return true; + return true; } -bool -ELFHeader::MagicBytesMatch(const uint8_t *magic) -{ - return memcmp(magic, ElfMagic, strlen(ElfMagic)) == 0; +bool ELFHeader::MagicBytesMatch(const uint8_t *magic) { + return memcmp(magic, ElfMagic, strlen(ElfMagic)) == 0; } -unsigned -ELFHeader::AddressSizeInBytes(const uint8_t *magic) -{ - unsigned address_size = 0; - - switch (magic[EI_CLASS]) - { - case ELFCLASS32: - address_size = 4; - break; - - case ELFCLASS64: - address_size = 8; - break; - } - return address_size; -} +unsigned ELFHeader::AddressSizeInBytes(const uint8_t *magic) { + unsigned address_size = 0; -unsigned -ELFHeader::GetRelocationJumpSlotType() const -{ - unsigned slot = 0; - - switch (e_machine) - { - default: - assert(false && "architecture not supported"); - break; - case EM_PPC: - slot = R_PPC_JMP_SLOT; - break; - case EM_PPC64: - slot = R_PPC64_JMP_SLOT; - break; - case EM_386: - case EM_IAMCU: // FIXME: is this correct? - slot = R_386_JUMP_SLOT; - break; - case EM_X86_64: - slot = R_X86_64_JUMP_SLOT; - break; - case EM_ARM: - slot = R_ARM_JUMP_SLOT; - break; - case EM_HEXAGON: - slot = R_HEX_JMP_SLOT; - break; - case EM_AARCH64: - slot = R_AARCH64_JUMP_SLOT; - break; - case EM_MIPS: - slot = R_MIPS_JUMP_SLOT; - break; - case EM_S390: - slot = R_390_JMP_SLOT; - break; - } + switch (magic[EI_CLASS]) { + case ELFCLASS32: + address_size = 4; + break; - return slot; + case ELFCLASS64: + address_size = 8; + break; + } + return address_size; +} + +unsigned ELFHeader::GetRelocationJumpSlotType() const { + unsigned slot = 0; + + switch (e_machine) { + default: + assert(false && "architecture not supported"); + break; + case EM_PPC: + slot = R_PPC_JMP_SLOT; + break; + case EM_PPC64: + slot = R_PPC64_JMP_SLOT; + break; + case EM_386: + case EM_IAMCU: // FIXME: is this correct? + slot = R_386_JUMP_SLOT; + break; + case EM_X86_64: + slot = R_X86_64_JUMP_SLOT; + break; + case EM_ARM: + slot = R_ARM_JUMP_SLOT; + break; + case EM_HEXAGON: + slot = R_HEX_JMP_SLOT; + break; + case EM_AARCH64: + slot = R_AARCH64_JUMP_SLOT; + break; + case EM_MIPS: + slot = R_MIPS_JUMP_SLOT; + break; + case EM_S390: + slot = R_390_JMP_SLOT; + break; + } + + return slot; } //------------------------------------------------------------------------------ // ELFSectionHeader -ELFSectionHeader::ELFSectionHeader() -{ - memset(this, 0, sizeof(ELFSectionHeader)); +ELFSectionHeader::ELFSectionHeader() { + memset(this, 0, sizeof(ELFSectionHeader)); } -bool -ELFSectionHeader::Parse(const lldb_private::DataExtractor &data, - lldb::offset_t *offset) -{ - const unsigned byte_size = data.GetAddressByteSize(); +bool ELFSectionHeader::Parse(const lldb_private::DataExtractor &data, + lldb::offset_t *offset) { + const unsigned byte_size = data.GetAddressByteSize(); - // Read sh_name and sh_type. - if (data.GetU32(offset, &sh_name, 2) == NULL) - return false; + // Read sh_name and sh_type. + if (data.GetU32(offset, &sh_name, 2) == NULL) + return false; - // Read sh_flags. - if (GetMaxU64(data, offset, &sh_flags, byte_size) == false) - return false; + // Read sh_flags. + if (GetMaxU64(data, offset, &sh_flags, byte_size) == false) + return false; - // Read sh_addr, sh_off and sh_size. - if (GetMaxU64(data, offset, &sh_addr, byte_size, 3) == false) - return false; + // Read sh_addr, sh_off and sh_size. + if (GetMaxU64(data, offset, &sh_addr, byte_size, 3) == false) + return false; - // Read sh_link and sh_info. - if (data.GetU32(offset, &sh_link, 2) == NULL) - return false; + // Read sh_link and sh_info. + if (data.GetU32(offset, &sh_link, 2) == NULL) + return false; - // Read sh_addralign and sh_entsize. - if (GetMaxU64(data, offset, &sh_addralign, byte_size, 2) == false) - return false; + // Read sh_addralign and sh_entsize. + if (GetMaxU64(data, offset, &sh_addralign, byte_size, 2) == false) + return false; - return true; + return true; } //------------------------------------------------------------------------------ // ELFSymbol -ELFSymbol::ELFSymbol() -{ - memset(this, 0, sizeof(ELFSymbol)); -} +ELFSymbol::ELFSymbol() { memset(this, 0, sizeof(ELFSymbol)); } -#define ENUM_TO_CSTR(e) case e: return #e +#define ENUM_TO_CSTR(e) \ + case e: \ + return #e -const char * -ELFSymbol::bindingToCString(unsigned char binding) -{ - switch (binding) - { +const char *ELFSymbol::bindingToCString(unsigned char binding) { + switch (binding) { ENUM_TO_CSTR(STB_LOCAL); ENUM_TO_CSTR(STB_GLOBAL); ENUM_TO_CSTR(STB_WEAK); @@ -265,15 +226,12 @@ ELFSymbol::bindingToCString(unsigned char binding) ENUM_TO_CSTR(STB_HIOS); ENUM_TO_CSTR(STB_LOPROC); ENUM_TO_CSTR(STB_HIPROC); - } - return ""; + } + return ""; } -const char * -ELFSymbol::typeToCString(unsigned char type) -{ - switch (type) - { +const char *ELFSymbol::typeToCString(unsigned char type) { + switch (type) { ENUM_TO_CSTR(STT_NOTYPE); ENUM_TO_CSTR(STT_OBJECT); ENUM_TO_CSTR(STT_FUNC); @@ -285,16 +243,13 @@ ELFSymbol::typeToCString(unsigned char type) ENUM_TO_CSTR(STT_HIOS); ENUM_TO_CSTR(STT_LOPROC); ENUM_TO_CSTR(STT_HIPROC); - } - return ""; + } + return ""; } -const char * -ELFSymbol::sectionIndexToCString (elf_half shndx, - const lldb_private::SectionList *section_list) -{ - switch (shndx) - { +const char *ELFSymbol::sectionIndexToCString( + elf_half shndx, const lldb_private::SectionList *section_list) { + switch (shndx) { ENUM_TO_CSTR(SHN_UNDEF); ENUM_TO_CSTR(SHN_LOPROC); ENUM_TO_CSTR(SHN_HIPROC); @@ -303,180 +258,148 @@ ELFSymbol::sectionIndexToCString (elf_half shndx, ENUM_TO_CSTR(SHN_ABS); ENUM_TO_CSTR(SHN_COMMON); ENUM_TO_CSTR(SHN_XINDEX); - default: - { - const lldb_private::Section *section = section_list->GetSectionAtIndex(shndx).get(); - if (section) - return section->GetName().AsCString(""); - } - break; - } - return ""; + default: { + const lldb_private::Section *section = + section_list->GetSectionAtIndex(shndx).get(); + if (section) + return section->GetName().AsCString(""); + } break; + } + return ""; } -void -ELFSymbol::Dump (lldb_private::Stream *s, - uint32_t idx, - const lldb_private::DataExtractor *strtab_data, - const lldb_private::SectionList *section_list) -{ - s->Printf("[%3u] 0x%16.16" PRIx64 " 0x%16.16" PRIx64 " 0x%8.8x 0x%2.2x (%-10s %-13s) 0x%2.2x 0x%4.4x (%-10s) %s\n", - idx, - st_value, - st_size, - st_name, - st_info, - bindingToCString (getBinding()), - typeToCString (getType()), - st_other, - st_shndx, - sectionIndexToCString (st_shndx, section_list), - strtab_data ? strtab_data->PeekCStr(st_name) : ""); +void ELFSymbol::Dump(lldb_private::Stream *s, uint32_t idx, + const lldb_private::DataExtractor *strtab_data, + const lldb_private::SectionList *section_list) { + s->Printf("[%3u] 0x%16.16" PRIx64 " 0x%16.16" PRIx64 + " 0x%8.8x 0x%2.2x (%-10s %-13s) 0x%2.2x 0x%4.4x (%-10s) %s\n", + idx, st_value, st_size, st_name, st_info, + bindingToCString(getBinding()), typeToCString(getType()), st_other, + st_shndx, sectionIndexToCString(st_shndx, section_list), + strtab_data ? strtab_data->PeekCStr(st_name) : ""); } -bool -ELFSymbol::Parse(const lldb_private::DataExtractor &data, lldb::offset_t *offset) -{ - const unsigned byte_size = data.GetAddressByteSize(); - const bool parsing_32 = byte_size == 4; - - // Read st_name. - if (data.GetU32(offset, &st_name, 1) == NULL) - return false; - - if (parsing_32) - { - // Read st_value and st_size. - if (GetMaxU64(data, offset, &st_value, byte_size, 2) == false) - return false; - - // Read st_info and st_other. - if (data.GetU8(offset, &st_info, 2) == NULL) - return false; - - // Read st_shndx. - if (data.GetU16(offset, &st_shndx, 1) == NULL) - return false; - } - else - { - // Read st_info and st_other. - if (data.GetU8(offset, &st_info, 2) == NULL) - return false; - - // Read st_shndx. - if (data.GetU16(offset, &st_shndx, 1) == NULL) - return false; - - // Read st_value and st_size. - if (data.GetU64(offset, &st_value, 2) == NULL) - return false; - } - return true; +bool ELFSymbol::Parse(const lldb_private::DataExtractor &data, + lldb::offset_t *offset) { + const unsigned byte_size = data.GetAddressByteSize(); + const bool parsing_32 = byte_size == 4; + + // Read st_name. + if (data.GetU32(offset, &st_name, 1) == NULL) + return false; + + if (parsing_32) { + // Read st_value and st_size. + if (GetMaxU64(data, offset, &st_value, byte_size, 2) == false) + return false; + + // Read st_info and st_other. + if (data.GetU8(offset, &st_info, 2) == NULL) + return false; + + // Read st_shndx. + if (data.GetU16(offset, &st_shndx, 1) == NULL) + return false; + } else { + // Read st_info and st_other. + if (data.GetU8(offset, &st_info, 2) == NULL) + return false; + + // Read st_shndx. + if (data.GetU16(offset, &st_shndx, 1) == NULL) + return false; + + // Read st_value and st_size. + if (data.GetU64(offset, &st_value, 2) == NULL) + return false; + } + return true; } //------------------------------------------------------------------------------ // ELFProgramHeader -ELFProgramHeader::ELFProgramHeader() -{ - memset(this, 0, sizeof(ELFProgramHeader)); +ELFProgramHeader::ELFProgramHeader() { + memset(this, 0, sizeof(ELFProgramHeader)); } -bool -ELFProgramHeader::Parse(const lldb_private::DataExtractor &data, - lldb::offset_t *offset) -{ - const uint32_t byte_size = data.GetAddressByteSize(); - const bool parsing_32 = byte_size == 4; - - // Read p_type; - if (data.GetU32(offset, &p_type, 1) == NULL) - return false; - - if (parsing_32) { - // Read p_offset, p_vaddr, p_paddr, p_filesz and p_memsz. - if (GetMaxU64(data, offset, &p_offset, byte_size, 5) == false) - return false; - - // Read p_flags. - if (data.GetU32(offset, &p_flags, 1) == NULL) - return false; - - // Read p_align. - if (GetMaxU64(data, offset, &p_align, byte_size) == false) - return false; - } - else { - // Read p_flags. - if (data.GetU32(offset, &p_flags, 1) == NULL) - return false; - - // Read p_offset, p_vaddr, p_paddr, p_filesz, p_memsz and p_align. - if (GetMaxU64(data, offset, &p_offset, byte_size, 6) == false) - return false; - } - - return true; +bool ELFProgramHeader::Parse(const lldb_private::DataExtractor &data, + lldb::offset_t *offset) { + const uint32_t byte_size = data.GetAddressByteSize(); + const bool parsing_32 = byte_size == 4; + + // Read p_type; + if (data.GetU32(offset, &p_type, 1) == NULL) + return false; + + if (parsing_32) { + // Read p_offset, p_vaddr, p_paddr, p_filesz and p_memsz. + if (GetMaxU64(data, offset, &p_offset, byte_size, 5) == false) + return false; + + // Read p_flags. + if (data.GetU32(offset, &p_flags, 1) == NULL) + return false; + + // Read p_align. + if (GetMaxU64(data, offset, &p_align, byte_size) == false) + return false; + } else { + // Read p_flags. + if (data.GetU32(offset, &p_flags, 1) == NULL) + return false; + + // Read p_offset, p_vaddr, p_paddr, p_filesz, p_memsz and p_align. + if (GetMaxU64(data, offset, &p_offset, byte_size, 6) == false) + return false; + } + + return true; } //------------------------------------------------------------------------------ // ELFDynamic -ELFDynamic::ELFDynamic() -{ - memset(this, 0, sizeof(ELFDynamic)); -} +ELFDynamic::ELFDynamic() { memset(this, 0, sizeof(ELFDynamic)); } -bool -ELFDynamic::Parse(const lldb_private::DataExtractor &data, lldb::offset_t *offset) -{ - const unsigned byte_size = data.GetAddressByteSize(); - return GetMaxS64(data, offset, &d_tag, byte_size, 2); +bool ELFDynamic::Parse(const lldb_private::DataExtractor &data, + lldb::offset_t *offset) { + const unsigned byte_size = data.GetAddressByteSize(); + return GetMaxS64(data, offset, &d_tag, byte_size, 2); } //------------------------------------------------------------------------------ // ELFRel -ELFRel::ELFRel() -{ - memset(this, 0, sizeof(ELFRel)); -} +ELFRel::ELFRel() { memset(this, 0, sizeof(ELFRel)); } -bool -ELFRel::Parse(const lldb_private::DataExtractor &data, lldb::offset_t *offset) -{ - const unsigned byte_size = data.GetAddressByteSize(); +bool ELFRel::Parse(const lldb_private::DataExtractor &data, + lldb::offset_t *offset) { + const unsigned byte_size = data.GetAddressByteSize(); - // Read r_offset and r_info. - if (GetMaxU64(data, offset, &r_offset, byte_size, 2) == false) - return false; + // Read r_offset and r_info. + if (GetMaxU64(data, offset, &r_offset, byte_size, 2) == false) + return false; - return true; + return true; } //------------------------------------------------------------------------------ // ELFRela -ELFRela::ELFRela() -{ - memset(this, 0, sizeof(ELFRela)); -} +ELFRela::ELFRela() { memset(this, 0, sizeof(ELFRela)); } -bool -ELFRela::Parse(const lldb_private::DataExtractor &data, lldb::offset_t *offset) -{ - const unsigned byte_size = data.GetAddressByteSize(); +bool ELFRela::Parse(const lldb_private::DataExtractor &data, + lldb::offset_t *offset) { + const unsigned byte_size = data.GetAddressByteSize(); - // Read r_offset and r_info. - if (GetMaxU64(data, offset, &r_offset, byte_size, 2) == false) - return false; + // Read r_offset and r_info. + if (GetMaxU64(data, offset, &r_offset, byte_size, 2) == false) + return false; - // Read r_addend; - if (GetMaxS64(data, offset, &r_addend, byte_size) == false) - return false; + // Read r_addend; + if (GetMaxS64(data, offset, &r_addend, byte_size) == false) + return false; - return true; + return true; } - - |
