diff options
Diffstat (limited to 'include/llvm/Object/ELF.h')
| -rw-r--r-- | include/llvm/Object/ELF.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/llvm/Object/ELF.h b/include/llvm/Object/ELF.h index cb013b9414..455a67b49f 100644 --- a/include/llvm/Object/ELF.h +++ b/include/llvm/Object/ELF.h @@ -33,6 +33,15 @@ namespace llvm { namespace object { +// Subclasses of ELFObjectFile may need this for template instantiation +inline std::pair<unsigned char, unsigned char> +getElfArchType(MemoryBuffer *Object) { + if (Object->getBufferSize() < ELF::EI_NIDENT) + return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE); + return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS] + , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]); +} + // Templates to choose Elf_Addr and Elf_Off depending on is64Bits. template<support::endianness target_endianness> struct ELFDataTypeTypedefHelperCommon { @@ -540,6 +549,10 @@ protected: virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const; virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const; virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const; + virtual error_code isSectionRequiredForExecution(DataRefImpl Sec, + bool &Res) const; + virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const; + virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const; virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, bool &Result) const; virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const; @@ -1094,6 +1107,43 @@ error_code ELFObjectFile<target_endianness, is64Bits> template<support::endianness target_endianness, bool is64Bits> error_code ELFObjectFile<target_endianness, is64Bits> + ::isSectionRequiredForExecution(DataRefImpl Sec, + bool &Result) const { + const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); + if (sec->sh_flags & ELF::SHF_ALLOC) + Result = true; + else + Result = false; + return object_error::success; +} + +template<support::endianness target_endianness, bool is64Bits> +error_code ELFObjectFile<target_endianness, is64Bits> + ::isSectionVirtual(DataRefImpl Sec, + bool &Result) const { + const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); + if (sec->sh_type == ELF::SHT_NOBITS) + Result = true; + else + Result = false; + return object_error::success; +} + +template<support::endianness target_endianness, bool is64Bits> +error_code ELFObjectFile<target_endianness, is64Bits>::isSectionZeroInit(DataRefImpl Sec, + bool &Result) const { + const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); + // For ELF, all zero-init sections are virtual (that is, they occupy no space + // in the object image) and vice versa. + if (sec->sh_flags & ELF::SHT_NOBITS) + Result = true; + else + Result = false; + return object_error::success; +} + +template<support::endianness target_endianness, bool is64Bits> +error_code ELFObjectFile<target_endianness, is64Bits> ::sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, bool &Result) const { |