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Factor some code into WriteSection.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118733 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2010-11-10 23:36:59 +00:00
parent c1235e2a4e
commit c87a94a942
1 changed files with 72 additions and 62 deletions
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134
lib/MC/ELFObjectWriter.cpp
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@ -342,6 +342,10 @@ namespace {
const MCFragment *DF) const;
void WriteObject(MCAssembler &Asm, const MCAsmLayout &Layout);
void WriteSection(MCAssembler &Asm,
const SectionIndexMapTy &SectionIndexMap,
uint64_t Offset, uint64_t Size, uint64_t Alignment,
const MCSectionELF &Section);
};
}
@ -1240,6 +1244,71 @@ bool ELFObjectWriterImpl::IsFixupFullyResolved(const MCAssembler &Asm,
return !SectionB && BaseSection == SectionA;
}
void ELFObjectWriterImpl::WriteSection(MCAssembler &Asm,
const SectionIndexMapTy &SectionIndexMap,
uint64_t Offset, uint64_t Size,
uint64_t Alignment,
const MCSectionELF &Section) {
uint64_t sh_link = 0;
uint64_t sh_info = 0;
switch(Section.getType()) {
case ELF::SHT_DYNAMIC:
sh_link = SectionStringTableIndex[&Section];
sh_info = 0;
break;
case ELF::SHT_REL:
case ELF::SHT_RELA: {
const MCSectionELF *SymtabSection;
const MCSectionELF *InfoSection;
SymtabSection = Asm.getContext().getELFSection(".symtab", ELF::SHT_SYMTAB,
0,
SectionKind::getReadOnly(),
false);
sh_link = SectionIndexMap.lookup(SymtabSection);
assert(sh_link && ".symtab not found");
// Remove ".rel" and ".rela" prefixes.
unsigned SecNameLen = (Section.getType() == ELF::SHT_REL) ? 4 : 5;
StringRef SectionName = Section.getSectionName().substr(SecNameLen);
InfoSection = Asm.getContext().getELFSection(SectionName,
ELF::SHT_PROGBITS, 0,
SectionKind::getReadOnly(),
false);
sh_info = SectionIndexMap.lookup(InfoSection);
break;
}
case ELF::SHT_SYMTAB:
case ELF::SHT_DYNSYM:
sh_link = StringTableIndex;
sh_info = LastLocalSymbolIndex;
break;
case ELF::SHT_SYMTAB_SHNDX:
sh_link = SymbolTableIndex;
break;
case ELF::SHT_PROGBITS:
case ELF::SHT_STRTAB:
case ELF::SHT_NOBITS:
case ELF::SHT_NULL:
case ELF::SHT_ARM_ATTRIBUTES:
// Nothing to do.
break;
default:
assert(0 && "FIXME: sh_type value not supported!");
break;
}
WriteSecHdrEntry(SectionStringTableIndex[&Section], Section.getType(),
Section.getFlags(), 0, Offset, Size, sh_link, sh_info,
Alignment, Section.getEntrySize());
}
void ELFObjectWriterImpl::WriteObject(MCAssembler &Asm,
const MCAsmLayout &Layout) {
SectionIndexMapTy SectionIndexMap;
@ -1320,68 +1389,9 @@ void ELFObjectWriterImpl::WriteObject(MCAssembler &Asm,
const MCSectionELF &Section =
static_cast<const MCSectionELF&>(SD.getSection());
uint64_t sh_link = 0;
uint64_t sh_info = 0;
switch(Section.getType()) {
case ELF::SHT_DYNAMIC:
sh_link = SectionStringTableIndex[&it->getSection()];
sh_info = 0;
break;
case ELF::SHT_REL:
case ELF::SHT_RELA: {
const MCSectionELF *SymtabSection;
const MCSectionELF *InfoSection;
SymtabSection = Asm.getContext().getELFSection(".symtab", ELF::SHT_SYMTAB, 0,
SectionKind::getReadOnly(),
false);
sh_link = SectionIndexMap[SymtabSection];
assert(sh_link && ".symtab not found");
// Remove ".rel" and ".rela" prefixes.
unsigned SecNameLen = (Section.getType() == ELF::SHT_REL) ? 4 : 5;
StringRef SectionName = Section.getSectionName().substr(SecNameLen);
InfoSection = Asm.getContext().getELFSection(SectionName,
ELF::SHT_PROGBITS, 0,
SectionKind::getReadOnly(),
false);
sh_info = SectionIndexMap[InfoSection];
break;
}
case ELF::SHT_SYMTAB:
case ELF::SHT_DYNSYM:
sh_link = StringTableIndex;
sh_info = LastLocalSymbolIndex;
break;
case ELF::SHT_SYMTAB_SHNDX:
sh_link = SymbolTableIndex;
break;
case ELF::SHT_PROGBITS:
case ELF::SHT_STRTAB:
case ELF::SHT_NOBITS:
case ELF::SHT_NULL:
case ELF::SHT_ARM_ATTRIBUTES:
// Nothing to do.
break;
default:
assert(0 && "FIXME: sh_type value not supported!");
break;
}
WriteSecHdrEntry(SectionStringTableIndex[&it->getSection()],
Section.getType(), Section.getFlags(),
0,
SectionOffsetMap.lookup(&SD.getSection()),
Layout.getSectionSize(&SD), sh_link,
sh_info, SD.getAlignment(),
Section.getEntrySize());
WriteSection(Asm, SectionIndexMap, SectionOffsetMap[&Section],
Layout.getSectionSize(&SD),
SD.getAlignment(), Section);
}
}