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MC: Support multiple sections with the same name in the same comdat group

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Code review by Eric Christopher and Rafael Espindola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193209 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2013-10-22 23:41:52 +00:00
parent f45787c645
commit 2b3ea3cdad
3 changed files with 64 additions and 14 deletions
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19
lib/MC/ELFObjectWriter.cpp
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@ -1298,10 +1298,12 @@ void ELFObjectWriter::WriteSection(MCAssembler &Asm,
// Remove ".rel" and ".rela" prefixes.
unsigned SecNameLen = (Section.getType() == ELF::SHT_REL) ? 4 : 5;
StringRef SectionName = Section.getSectionName().substr(SecNameLen);
StringRef GroupName =
Section.getGroup() ? Section.getGroup()->getName() : "";
InfoSection = Asm.getContext().getELFSection(SectionName,
ELF::SHT_PROGBITS, 0,
SectionKind::getReadOnly());
InfoSection = Asm.getContext().getELFSection(SectionName, ELF::SHT_PROGBITS,
0, SectionKind::getReadOnly(),
0, GroupName);
sh_info = SectionIndexMap.lookup(InfoSection);
break;
}
@ -1351,11 +1353,12 @@ void ELFObjectWriter::WriteSection(MCAssembler &Asm,
ELF::SHF_EXECINSTR | ELF::SHF_ALLOC,
SectionKind::getText()));
} else if (SecName.startswith(".ARM.exidx")) {
sh_link = SectionIndexMap.lookup(
Asm.getContext().getELFSection(SecName.substr(sizeof(".ARM.exidx") - 1),
ELF::SHT_PROGBITS,
ELF::SHF_EXECINSTR | ELF::SHF_ALLOC,
SectionKind::getText()));
StringRef GroupName =
Section.getGroup() ? Section.getGroup()->getName() : "";
sh_link = SectionIndexMap.lookup(Asm.getContext().getELFSection(
SecName.substr(sizeof(".ARM.exidx") - 1), ELF::SHT_PROGBITS,
ELF::SHF_EXECINSTR | ELF::SHF_ALLOC, SectionKind::getText(), 0,
GroupName));
}
}