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Start of .sleb128/.uleb128 parsing support.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108612 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2010-07-17 06:27:28 +00:00
parent e332553eae
commit dc1ad22d53
1 changed files with 26 additions and 0 deletions
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26
lib/MC/MCParser/ELFAsmParser.cpp
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@ -8,6 +8,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCParser/MCAsmParserExtension.h"
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCParser/MCAsmLexer.h"
@ -36,6 +37,10 @@ public:
&ELFAsmParser::ParseDirectiveSection));
Parser.AddDirectiveHandler(this, ".size", MCAsmParser::DirectiveHandler(
&ELFAsmParser::ParseDirectiveSize));
Parser.AddDirectiveHandler(this, ".sleb128", MCAsmParser::DirectiveHandler(
&ELFAsmParser::ParseDirectiveLEB128));
Parser.AddDirectiveHandler(this, ".uleb128", MCAsmParser::DirectiveHandler(
&ELFAsmParser::ParseDirectiveLEB128));
}
bool ParseSectionDirectiveData(StringRef, SMLoc) {
@ -48,6 +53,7 @@ public:
MCSectionELF::SHF_EXECINSTR |
MCSectionELF::SHF_ALLOC, SectionKind::getText());
}
bool ParseDirectiveLEB128(StringRef, SMLoc);
bool ParseDirectiveSection(StringRef, SMLoc);
bool ParseDirectiveSize(StringRef, SMLoc);
};
@ -191,6 +197,26 @@ bool ELFAsmParser::ParseDirectiveSection(StringRef, SMLoc) {
return false;
}
bool ELFAsmParser::ParseDirectiveLEB128(StringRef DirName, SMLoc) {
int64_t Value;
if (getParser().ParseAbsoluteExpression(Value))
return true;
if (getLexer().isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in directive");
// FIXME: Add proper MC support.
if (getContext().getAsmInfo().hasLEB128()) {
if (DirName[1] == 's')
getStreamer().EmitRawText("\t.sleb128\t" + Twine(Value));
else
getStreamer().EmitRawText("\t.uleb128\t" + Twine(Value));
return false;
}
// FIXME: This shouldn't be an error!
return TokError("LEB128 not supported yet");
}
namespace llvm {
MCAsmParserExtension *createELFAsmParser() {