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Adding convenience function to ELF Header

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167852 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Shankar Easwaran 2012-11-13 18:26:22 +00:00
parent 2344abc939
commit f741482387
1 changed files with 16 additions and 0 deletions
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16
include/llvm/Object/ELF.h
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@ -609,6 +609,7 @@ public:
const Elf_Dyn *getDyn(DataRefImpl DynData) const;
error_code getSymbolVersion(SymbolRef Symb, StringRef &Version,
bool &IsDefault) const;
uint64_t getSymbolIndex(const Elf_Sym *sym) const;
protected:
virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const;
virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const;
@ -2094,6 +2095,21 @@ ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
}
}
// Get the symbol table index in the symtab section given a symbol
template<support::endianness target_endianness, bool is64Bits>
uint64_t ELFObjectFile<target_endianness, is64Bits>
::getSymbolIndex(const Elf_Sym *Sym) const {
assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!");
const Elf_Shdr *SymTab = *SymbolTableSections.begin();
uintptr_t SymLoc = uintptr_t(Sym);
uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset);
assert(SymLoc > SymTabLoc && "Symbol not in symbol table!");
uint64_t SymOffset = SymLoc - SymTabLoc;
assert(SymOffset % SymTab->sh_entsize == 0 &&
"Symbol not multiple of symbol size!");
return SymOffset / SymTab->sh_entsize;
}
template<support::endianness target_endianness, bool is64Bits>
symbol_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_symbols() const {