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| author | David Meyer <pdox@google.com> | 2012-03-09 20:59:52 +0000 |
|---|---|---|
| committer | David Meyer <pdox@google.com> | 2012-03-09 20:59:52 +0000 |
| commit | 2d70e263c2b508bf4641273dd89a23149f6f6164 (patch) | |
| tree | 73c16d556e0036179e38acac5d96621d8ddda23b /include/llvm/Support/ELF.h | |
| parent | 6f9489a86f33624f9ff5388411d12359ce9cef20 (diff) | |
| download | llvm-2d70e263c2b508bf4641273dd89a23149f6f6164.tar.gz llvm-2d70e263c2b508bf4641273dd89a23149f6f6164.tar.bz2 llvm-2d70e263c2b508bf4641273dd89a23149f6f6164.tar.xz | |
Support reading GNU symbol versions in ELFObjectFile
* Add enums and structures for GNU version information.
* Implement extraction of that information on a per-symbol basis (ELFObjectFile::getSymbolVersion).
* Implement a generic interface, GetELFSymbolVersion(), for getting the symbol version from the ObjectFile (hides the templating).
* Have llvm-readobj print out the version, when available.
* Add a test for the new feature: readobj-elf-versioning.test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152436 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Support/ELF.h')
| -rw-r--r-- | include/llvm/Support/ELF.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/llvm/Support/ELF.h b/include/llvm/Support/ELF.h index 6dd76ea170..052fc5135f 100644 --- a/include/llvm/Support/ELF.h +++ b/include/llvm/Support/ELF.h @@ -734,6 +734,9 @@ enum { SHT_GROUP = 17, // Section group. SHT_SYMTAB_SHNDX = 18, // Indices for SHN_XINDEX entries. SHT_LOOS = 0x60000000, // Lowest operating system-specific type. + SHT_GNU_verdef = 0x6ffffffd, // GNU version definitions. + SHT_GNU_verneed = 0x6ffffffe, // GNU version references. + SHT_GNU_versym = 0x6fffffff, // GNU symbol versions table. SHT_HIOS = 0x6fffffff, // Highest operating system-specific type. SHT_LOPROC = 0x70000000, // Lowest processor architecture-specific type. // Fixme: All this is duplicated in MCSectionELF. Why?? @@ -1102,6 +1105,33 @@ enum { DF_STATIC_TLS = 0x10 // Reject attempts to load dynamically. }; +// ElfXX_VerDef structure version (GNU versioning) +enum { + VER_DEF_NONE = 0, + VER_DEF_CURRENT = 1 +}; + +// VerDef Flags (ElfXX_VerDef::vd_flags) +enum { + VER_FLG_BASE = 0x1, + VER_FLG_WEAK = 0x2, + VER_FLG_INFO = 0x4 +}; + +// Special constants for the version table. (SHT_GNU_versym/.gnu.version) +enum { + VER_NDX_LOCAL = 0, // Unversioned local symbol + VER_NDX_GLOBAL = 1, // Unversioned global symbol + VERSYM_VERSION = 0x7fff, // Version Index mask + VERSYM_HIDDEN = 0x8000 // Hidden bit (non-default version) +}; + +// ElfXX_VerNeed structure version (GNU versioning) +enum { + VER_NEED_NONE = 0, + VER_NEED_CURRENT = 1 +}; + } // end namespace ELF } // end namespace llvm |