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Add support for parsing sun-style section flags in ELFAsmParser.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202573 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Venkatraman Govindaraju 2014-03-01 06:21:00 +00:00
parent 5ddaa6dcf4
commit 8669eda107
2 changed files with 44 additions and 7 deletions
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49
lib/MC/MCParser/ELFAsmParser.cpp
View File

@ -151,6 +151,7 @@ public:
private:
bool ParseSectionName(StringRef &SectionName);
bool ParseSectionArguments(bool IsPush);
unsigned parseSunStyleSectionFlags();
};
}
@ -322,6 +323,36 @@ static unsigned parseSectionFlags(StringRef flagsStr, bool *UseLastGroup) {
return flags;
}
unsigned ELFAsmParser::parseSunStyleSectionFlags() {
unsigned flags = 0;
while (getLexer().is(AsmToken::Hash)) {
Lex(); // Eat the #.
if (!getLexer().is(AsmToken::Identifier))
return -1U;
StringRef flagId = getTok().getIdentifier();
if (flagId == "alloc")
flags |= ELF::SHF_ALLOC;
else if (flagId == "execinstr")
flags |= ELF::SHF_EXECINSTR;
else if (flagId == "write")
flags |= ELF::SHF_WRITE;
else if (flagId == "tls")
flags |= ELF::SHF_TLS;
else
return -1U;
Lex(); // Eat the flag.
if (!getLexer().is(AsmToken::Comma))
break;
Lex(); // Eat the comma.
}
return flags;
}
bool ELFAsmParser::ParseDirectivePushSection(StringRef s, SMLoc loc) {
getStreamer().PushSection();
@ -374,14 +405,20 @@ bool ELFAsmParser::ParseSectionArguments(bool IsPush) {
goto EndStmt;
Lex();
}
if (getLexer().isNot(AsmToken::String))
return TokError("expected string in directive");
StringRef FlagsStr = getTok().getStringContents();
Lex();
unsigned extraFlags;
if (getLexer().isNot(AsmToken::String)) {
if (!getContext().getAsmInfo()->usesSunStyleELFSectionSwitchSyntax()
|| getLexer().isNot(AsmToken::Hash))
return TokError("expected string in directive");
extraFlags = parseSunStyleSectionFlags();
} else {
StringRef FlagsStr = getTok().getStringContents();
Lex();
extraFlags = parseSectionFlags(FlagsStr, &UseLastGroup);
}
unsigned extraFlags = parseSectionFlags(FlagsStr, &UseLastGroup);
if (extraFlags == -1U)
return TokError("unknown flag");
Flags |= extraFlags;

2
test/MC/Sparc/sparc-pic.s
View File

@ -40,7 +40,7 @@ foo:
.cfi_endproc
.type AGlobalVar,@object ! @AGlobalVar
.section .bss
.section .bss,#alloc,#write
.globl AGlobalVar
.align 8
AGlobalVar: