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Add support for pushsection and popsection. Patch by Joerg Sonnenberger.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125629 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2011-02-16 01:08:29 +00:00
parent e32effb02f
commit 7768a9dce1
13 changed files with 226 additions and 66 deletions
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30
lib/MC/MCParser/ELFAsmParser.cpp
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@@ -49,6 +49,8 @@ public:
AddDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveDataRelRoLocal>(".data.rel.ro.local");
AddDirectiveHandler<&ELFAsmParser::ParseSectionDirectiveEhFrame>(".eh_frame");
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveSection>(".section");
AddDirectiveHandler<&ELFAsmParser::ParseDirectivePushSection>(".pushsection");
AddDirectiveHandler<&ELFAsmParser::ParseDirectivePopSection>(".popsection");
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveSize>(".size");
AddDirectiveHandler<&ELFAsmParser::ParseDirectivePrevious>(".previous");
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveType>(".type");
@@ -115,6 +117,8 @@ public:
ELF::SHF_WRITE,
SectionKind::getDataRel());
}
bool ParseDirectivePushSection(StringRef, SMLoc);
bool ParseDirectivePopSection(StringRef, SMLoc);
bool ParseDirectiveSection(StringRef, SMLoc);
bool ParseDirectiveSize(StringRef, SMLoc);
bool ParseDirectivePrevious(StringRef, SMLoc);
@@ -253,6 +257,23 @@ static int parseSectionFlags(StringRef flagsStr) {
return flags;
}
bool ELFAsmParser::ParseDirectivePushSection(StringRef s, SMLoc loc) {
getStreamer().PushSection();
if (ParseDirectiveSection(s, loc)) {
getStreamer().PopSection();
return true;
}
return false;
}
bool ELFAsmParser::ParseDirectivePopSection(StringRef, SMLoc) {
if (!getStreamer().PopSection())
return TokError(".popsection without corresponding .pushsection");
return false;
}
// FIXME: This is a work in progress.
bool ELFAsmParser::ParseDirectiveSection(StringRef, SMLoc) {
StringRef SectionName;
@@ -364,8 +385,9 @@ bool ELFAsmParser::ParseDirectiveSection(StringRef, SMLoc) {
bool ELFAsmParser::ParseDirectivePrevious(StringRef DirName, SMLoc) {
const MCSection *PreviousSection = getStreamer().getPreviousSection();
if (PreviousSection != NULL)
getStreamer().SwitchSection(PreviousSection);
if (PreviousSection == NULL)
return TokError(".previous without corresponding .section");
getStreamer().SwitchSection(PreviousSection);
return false;
}
@@ -427,7 +449,6 @@ bool ELFAsmParser::ParseDirectiveIdent(StringRef, SMLoc) {
Lex();
const MCSection *OldSection = getStreamer().getCurrentSection();
const MCSection *Comment =
getContext().getELFSection(".comment", ELF::SHT_PROGBITS,
ELF::SHF_MERGE |
@@ -437,13 +458,14 @@ bool ELFAsmParser::ParseDirectiveIdent(StringRef, SMLoc) {
static bool First = true;
getStreamer().PushSection();
getStreamer().SwitchSection(Comment);
if (First)
getStreamer().EmitIntValue(0, 1);
First = false;
getStreamer().EmitBytes(Data, 0);
getStreamer().EmitIntValue(0, 1);
getStreamer().SwitchSection(OldSection);
getStreamer().PopSection();
return false;
}