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| author | Andrew Kaylor <andrew.kaylor@intel.com> | 2012-10-10 01:41:33 +0000 |
|---|---|---|
| committer | Andrew Kaylor <andrew.kaylor@intel.com> | 2012-10-10 01:41:33 +0000 |
| commit | 3a129c85920404e7ccdb7e655c89fa60a0309cfd (patch) | |
| tree | a6e7173e382ee097c4f705846189252491eb8971 /include/llvm/Object/ELF.h | |
| parent | 97d9f081a92c18bb4fd1c069dccde7c99301150a (diff) | |
| download | llvm-3a129c85920404e7ccdb7e655c89fa60a0309cfd.tar.gz llvm-3a129c85920404e7ccdb7e655c89fa60a0309cfd.tar.bz2 llvm-3a129c85920404e7ccdb7e655c89fa60a0309cfd.tar.xz | |
This patch adds new functions to the SectionRef and ObjectFile interfaces to determine whether or not a section is meant to be read-only. These functions will be used by the MCJIT RuntimeDyld to give hints to the memory manager during the object loading process in a future patch.
Patch by Ashok Thirumurthi.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165586 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Object/ELF.h')
| -rw-r--r-- | include/llvm/Object/ELF.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/llvm/Object/ELF.h b/include/llvm/Object/ELF.h index 8391e6504c..3ca69bcb15 100644 --- a/include/llvm/Object/ELF.h +++ b/include/llvm/Object/ELF.h @@ -640,6 +640,7 @@ protected: bool &Res) const; virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const; virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const; + virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const; virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, bool &Result) const; virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const; @@ -1288,7 +1289,8 @@ error_code ELFObjectFile<target_endianness, is64Bits> } template<support::endianness target_endianness, bool is64Bits> -error_code ELFObjectFile<target_endianness, is64Bits>::isSectionZeroInit(DataRefImpl Sec, +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 @@ -1302,6 +1304,18 @@ error_code ELFObjectFile<target_endianness, is64Bits>::isSectionZeroInit(DataRef template<support::endianness target_endianness, bool is64Bits> error_code ELFObjectFile<target_endianness, is64Bits> + ::isSectionReadOnlyData(DataRefImpl Sec, + bool &Result) const { + const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); + if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR) + Result = false; + else + Result = true; + 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 { |