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[Sparc] Add support for parsing directives in SparcAsmParser.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202564 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Venkatraman Govindaraju
2014-03-01 02:18:04 +00:00
parent c9bf74fdc5
commit 17e9537004
4 changed files with 77 additions and 4 deletions
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50
lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
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@@ -73,7 +73,9 @@ class SparcAsmParser : public MCTargetAsmParser {
unsigned &RegKind);
bool matchSparcAsmModifiers(const MCExpr *&EVal, SMLoc &EndLoc);
bool parseDirectiveWord(unsigned Size, SMLoc L);
bool is64Bit() const { return STI.getTargetTriple().startswith("sparcv9"); }
public:
SparcAsmParser(MCSubtargetInfo &sti, MCAsmParser &parser,
const MCInstrInfo &MII)
@@ -482,8 +484,52 @@ ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
bool SparcAsmParser::
ParseDirective(AsmToken DirectiveID)
{
// Ignore all directives for now.
Parser.eatToEndOfStatement();
StringRef IDVal = DirectiveID.getString();
if (IDVal == ".byte")
return parseDirectiveWord(1, DirectiveID.getLoc());
if (IDVal == ".half")
return parseDirectiveWord(2, DirectiveID.getLoc());
if (IDVal == ".word")
return parseDirectiveWord(4, DirectiveID.getLoc());
if (IDVal == ".nword")
return parseDirectiveWord(is64Bit() ? 8 : 4, DirectiveID.getLoc());
if (is64Bit() && IDVal == ".xword")
return parseDirectiveWord(8, DirectiveID.getLoc());
if (IDVal == ".register") {
// For now, ignore .register directive.
Parser.eatToEndOfStatement();
return false;
}
// Let the MC layer to handle other directives.
return true;
}
bool SparcAsmParser:: parseDirectiveWord(unsigned Size, SMLoc L) {
if (getLexer().isNot(AsmToken::EndOfStatement)) {
for (;;) {
const MCExpr *Value;
if (getParser().parseExpression(Value))
return true;
getParser().getStreamer().EmitValue(Value, Size);
if (getLexer().is(AsmToken::EndOfStatement))
break;
// FIXME: Improve diagnostic.
if (getLexer().isNot(AsmToken::Comma))
return Error(L, "unexpected token in directive");
Parser.Lex();
}
}
Parser.Lex();
return false;
}