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[Sparc] Add support for parsing sparc asm modifiers such as %hi, %lo etc.,

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Also, correct the offsets for FixupsKindInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198681 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Venkatraman Govindaraju
2014-01-07 08:00:49 +00:00
parent 9c15f4c9c9
commit dff38618c6
6 changed files with 132 additions and 26 deletions
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40
lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
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@@ -8,6 +8,7 @@
//===----------------------------------------------------------------------===//
#include "MCTargetDesc/SparcMCTargetDesc.h"
#include "MCTargetDesc/SparcMCExpr.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCInst.h"
@@ -68,6 +69,7 @@ class SparcAsmParser : public MCTargetAsmParser {
// returns true if Tok is matched to a register and returns register in RegNo.
bool matchRegisterName(const AsmToken &Tok, unsigned &RegNo, bool isDFP,
bool isQFP);
bool matchSparcAsmModifiers(const MCExpr *&EVal, SMLoc &EndLoc);
public:
SparcAsmParser(MCSubtargetInfo &sti, MCAsmParser &parser,
@@ -536,28 +538,30 @@ SparcAsmParser::parseSparcAsmOperand(SparcOperand *&Op)
unsigned RegNo;
if (matchRegisterName(Parser.getTok(), RegNo, false, false)) {
Parser.Lex(); // Eat the identifier token.
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
Op = SparcOperand::CreateReg(RegNo, SparcOperand::rk_None, S, E);
break;
}
// FIXME: Handle modifiers like %hi, %lo etc.,
if (matchSparcAsmModifiers(EVal, E)) {
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
Op = SparcOperand::CreateImm(EVal, S, E);
}
break;
case AsmToken::Minus:
case AsmToken::Integer:
if (!getParser().parseExpression(EVal))
if (!getParser().parseExpression(EVal, E))
Op = SparcOperand::CreateImm(EVal, S, E);
break;
case AsmToken::Identifier: {
StringRef Identifier;
if (!getParser().parseIdentifier(Identifier)) {
SMLoc E = SMLoc::getFromPointer(Parser.getTok().
getLoc().getPointer() - 1);
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
MCSymbol *Sym = getContext().GetOrCreateSymbol(Identifier);
const MCExpr *Res = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_None,
getContext());
Op = SparcOperand::CreateImm(Res, S, E);
}
break;
@@ -675,6 +679,32 @@ bool SparcAsmParser::matchRegisterName(const AsmToken &Tok,
}
bool SparcAsmParser::matchSparcAsmModifiers(const MCExpr *&EVal,
SMLoc &EndLoc)
{
AsmToken Tok = Parser.getTok();
if (!Tok.is(AsmToken::Identifier))
return false;
StringRef name = Tok.getString();
SparcMCExpr::VariantKind VK = SparcMCExpr::parseVariantKind(name);
if (VK == SparcMCExpr::VK_Sparc_None)
return false;
Parser.Lex(); // Eat the identifier.
if (Parser.getTok().getKind() != AsmToken::LParen)
return false;
Parser.Lex(); // Eat the LParen token.
const MCExpr *subExpr;
if (Parser.parseParenExpression(subExpr, EndLoc))
return false;
EVal = SparcMCExpr::Create(VK, subExpr, getContext());
return true;
}
extern "C" void LLVMInitializeSparcAsmParser() {
RegisterMCAsmParser<SparcAsmParser> A(TheSparcTarget);