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Added llvm-mc support for parsing the .desc directive.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75645 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Enderby
2009-07-14 18:17:10 +00:00
parent 533c67ba98
commit 95cf30c444
5 changed files with 54 additions and 0 deletions
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33
tools/llvm-mc/AsmParser.cpp
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@ -526,6 +526,8 @@ bool AsmParser::ParseStatement() {
return ParseDirectiveComm(/*IsLocal=*/true);
if (!strcmp(IDVal, ".zerofill"))
return ParseDirectiveDarwinZerofill();
if (!strcmp(IDVal, ".desc"))
return ParseDirectiveDarwinSymbolDesc();
if (!strcmp(IDVal, ".subsections_via_symbols"))
return ParseDirectiveDarwinSubsectionsViaSymbols();
@ -909,6 +911,37 @@ bool AsmParser::ParseDirectiveSymbolAttribute(MCStreamer::SymbolAttr Attr) {
return false;
}
/// ParseDirectiveDarwinSymbolDesc
/// ::= .desc identifier , expression
bool AsmParser::ParseDirectiveDarwinSymbolDesc() {
if (Lexer.isNot(asmtok::Identifier))
return TokError("expected identifier in directive");
// handle the identifier as the key symbol.
SMLoc IDLoc = Lexer.getLoc();
MCSymbol *Sym = Ctx.GetOrCreateSymbol(Lexer.getCurStrVal());
Lexer.Lex();
if (Lexer.isNot(asmtok::Comma))
return TokError("unexpected token in '.desc' directive");
Lexer.Lex();
SMLoc DescLoc = Lexer.getLoc();
int64_t DescValue;
if (ParseAbsoluteExpression(DescValue))
return true;
if (Lexer.isNot(asmtok::EndOfStatement))
return TokError("unexpected token in '.desc' directive");
Lexer.Lex();
// Set the n_desc field of this Symbol to this DescValue
Out.EmitSymbolDesc(Sym, DescValue);
return false;
}
/// ParseDirectiveComm
/// ::= ( .comm | .lcomm ) identifier , size_expression [ , align_expression ]
bool AsmParser::ParseDirectiveComm(bool IsLocal) {