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Add support for 64-bit elf files

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22400 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-07-12 06:57:52 +00:00
parent 39429617e0
commit 46c53054d0
1 changed files with 24 additions and 16 deletions
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40
lib/CodeGen/ELFWriter.cpp
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@ -197,11 +197,10 @@ bool ELFWriter::doInitialization(Module &M) {
outaddr(0); // e_shoff
outword(e_flags); // e_flags = whatever the target wants
assert(!is64Bit && "These sizes need to be adjusted for 64-bit!");
outhalf(52); // e_ehsize = ELF header size
outhalf(is64Bit ? 64 : 52); // e_ehsize = ELF header size
outhalf(0); // e_phentsize = prog header entry size
outhalf(0); // e_phnum = # prog header entries = 0
outhalf(40); // e_shentsize = sect header entry size
outhalf(is64Bit ? 64 : 40); // e_shentsize = sect header entry size
ELFHeader_e_shnum_Offset = OutputBuffer.size();
@ -409,27 +408,36 @@ void ELFWriter::EmitSymbolTable() {
// Now that we have emitted the string table and know the offset into the
// string table of each symbol, emit the symbol table itself.
assert(!is64Bit && "Should this be 8 byte aligned for 64-bit?"
" (check .Align below also)");
align(4);
align(is64Bit ? 8 : 4);
SectionList.push_back(ELFSection(".symtab", OutputBuffer.size()));
ELFSection &SymTab = SectionList.back();
SymTab.Type = ELFSection::SHT_SYMTAB;
SymTab.Align = 4; // FIXME: check for ELF64
SymTab.Align = is64Bit ? 8 : 4;
SymTab.Link = SectionList.size()-2; // Section Index of .strtab.
SymTab.Info = FirstNonLocalSymbol; // First non-STB_LOCAL symbol.
SymTab.EntSize = 16; // Size of each symtab entry. FIXME: wrong for ELF64
assert(!is64Bit && "check this!");
for (unsigned i = 0, e = SymbolTable.size(); i != e; ++i) {
ELFSym &Sym = SymbolTable[i];
outword(Sym.NameIdx);
outaddr(Sym.Value);
outword(Sym.Size);
outbyte(Sym.Info);
outbyte(Sym.Other);
outhalf(Sym.SectionIdx);
if (!is64Bit) { // 32-bit and 64-bit formats are shuffled a bit.
for (unsigned i = 0, e = SymbolTable.size(); i != e; ++i) {
ELFSym &Sym = SymbolTable[i];
outword(Sym.NameIdx);
outaddr32(Sym.Value);
outword(Sym.Size);
outbyte(Sym.Info);
outbyte(Sym.Other);
outhalf(Sym.SectionIdx);
}
} else {
for (unsigned i = 0, e = SymbolTable.size(); i != e; ++i) {
ELFSym &Sym = SymbolTable[i];
outword(Sym.NameIdx);
outbyte(Sym.Info);
outbyte(Sym.Other);
outhalf(Sym.SectionIdx);
outaddr64(Sym.Value);
outxword(Sym.Size);
}
}
SymTab.Size = OutputBuffer.size()-SymTab.Offset;