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llvm-svn: 117651
This commit is contained in:
Jim Grosbach 2010-10-29 14:46:02 +00:00
parent f2442da5f6
commit 29961ebfc5
1 changed files with 30 additions and 30 deletions
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60
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -35,7 +35,7 @@ enum ShiftType {
namespace {
struct ARMOperand;
class ARMAsmParser : public TargetAsmParser {
MCAsmParser &Parser;
TargetMachine &TM;
@ -79,7 +79,7 @@ private:
bool MatchAndEmitInstruction(SMLoc IDLoc,
SmallVectorImpl<MCParsedAsmOperand*> &Operands,
MCStreamer &Out);
/// @name Auto-generated Match Functions
/// {
@ -98,8 +98,8 @@ public:
virtual bool ParseDirective(AsmToken DirectiveID);
};
} // end anonymous namespace
} // end anonymous namespace
namespace {
/// ARMOperand - Instances of this class represent a parsed ARM machine
@ -134,7 +134,7 @@ public:
struct {
const MCExpr *Val;
} Imm;
// This is for all forms of ARM address expressions
struct {
unsigned BaseRegNum;
@ -152,7 +152,7 @@ public:
} Mem;
};
ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
Kind = o.Kind;
StartLoc = o.StartLoc;
@ -175,7 +175,7 @@ public:
break;
}
}
/// getStartLoc - Get the location of the first token of this operand.
SMLoc getStartLoc() const { return StartLoc; }
/// getEndLoc - Get the location of the last token of this operand.
@ -233,20 +233,20 @@ public:
assert(N == 1 && "Invalid number of operands!");
addExpr(Inst, getImm());
}
bool isMemMode5() const {
// FIXME: Is this right? What about postindexed and Writeback?
if (!isMemory() || Mem.OffsetIsReg || Mem.OffsetRegShifted ||
Mem.Preindexed || Mem.Negative)
return false;
return true;
}
void addMemMode5Operands(MCInst &Inst, unsigned N) const {
assert(N == 2 && isMemMode5() && "Invalid number of operands!");
Inst.addOperand(MCOperand::CreateReg(Mem.BaseRegNum));
assert(!Mem.OffsetIsReg && "invalid mode 5 operand");
addExpr(Inst, Mem.Offset);
@ -307,12 +307,12 @@ public:
Op->Mem.Postindexed = Postindexed;
Op->Mem.Negative = Negative;
Op->Mem.Writeback = Writeback;
Op->StartLoc = S;
Op->EndLoc = E;
return Op;
}
private:
ARMOperand(KindTy K) : Kind(K) {}
};
@ -364,11 +364,11 @@ ARMOperand *ARMAsmParser::MaybeParseRegister(bool ParseWriteBack) {
RegNum = MatchRegisterName(Tok.getString());
if (RegNum == -1)
return 0;
S = Tok.getLoc();
Parser.Lex(); // Eat identifier token.
E = Parser.getTok().getLoc();
bool Writeback = false;
@ -404,7 +404,7 @@ ARMOperand *ARMAsmParser::ParseRegisterList() {
Error(RegLoc, "register expected");
return 0;
}
Parser.Lex(); // Eat identifier token.
unsigned RegList = 1 << RegNum;
@ -534,7 +534,7 @@ ARMOperand *ARMAsmParser::ParseMemory() {
}
Parser.Lex(); // Eat comma token.
if (ParseMemoryOffsetReg(Negative, OffsetRegShifted, ShiftType,
ShiftAmount, Offset, OffsetIsReg, OffsetRegNum,
ShiftAmount, Offset, OffsetIsReg, OffsetRegNum,
E))
return 0;
}
@ -603,7 +603,7 @@ bool ARMAsmParser::ParseMemoryOffsetReg(bool &Negative,
const AsmToken &HashTok = Parser.getTok();
if (HashTok.isNot(AsmToken::Hash))
return Error(HashTok.getLoc(), "'#' expected");
Parser.Lex(); // Eat hash token.
if (getParser().ParseExpression(Offset))
@ -617,7 +617,7 @@ bool ARMAsmParser::ParseMemoryOffsetReg(bool &Negative,
/// ( lsl | lsr | asr | ror ) , # shift_amount
/// rrx
/// and returns true if it parses a shift otherwise it returns false.
bool ARMAsmParser::ParseShift(ShiftType &St, const MCExpr *&ShiftAmount,
bool ARMAsmParser::ParseShift(ShiftType &St, const MCExpr *&ShiftAmount,
SMLoc &E) {
const AsmToken &Tok = Parser.getTok();
if (Tok.isNot(AsmToken::Identifier))
@ -657,12 +657,12 @@ bool ARMAsmParser::ParseShift(ShiftType &St, const MCExpr *&ShiftAmount,
/// of the mnemonic.
ARMOperand *ARMAsmParser::ParseOperand() {
SMLoc S, E;
switch (getLexer().getKind()) {
case AsmToken::Identifier:
if (ARMOperand *Op = MaybeParseRegister(true))
return Op;
// This was not a register so parse other operands that start with an
// identifier (like labels) as expressions and create them as immediates.
const MCExpr *IdVal;
@ -720,7 +720,7 @@ bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
.Case("le", ARMCC::LE)
.Case("al", ARMCC::AL)
.Default(~0U);
if (CC != ~0U)
Head = Head.slice(0, Head.size() - 2);
else
@ -760,7 +760,7 @@ bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
}
}
}
if (getLexer().isNot(AsmToken::EndOfStatement)) {
Parser.EatToEndOfStatement();
return TokError("unexpected token in argument list");
@ -779,7 +779,7 @@ MatchAndEmitInstruction(SMLoc IDLoc,
case Match_Success:
Out.EmitInstruction(Inst);
return false;
case Match_MissingFeature:
Error(IDLoc, "instruction requires a CPU feature not currently enabled");
return true;
@ -788,17 +788,17 @@ MatchAndEmitInstruction(SMLoc IDLoc,
if (ErrorInfo != ~0U) {
if (ErrorInfo >= Operands.size())
return Error(IDLoc, "too few operands for instruction");
ErrorLoc = ((ARMOperand*)Operands[ErrorInfo])->getStartLoc();
if (ErrorLoc == SMLoc()) ErrorLoc = IDLoc;
}
return Error(ErrorLoc, "invalid operand for instruction");
}
case Match_MnemonicFail:
return Error(IDLoc, "unrecognized instruction mnemonic");
}
llvm_unreachable("Implement any new match types added!");
}
@ -833,7 +833,7 @@ bool ARMAsmParser::ParseDirectiveWord(unsigned Size, SMLoc L) {
if (getLexer().is(AsmToken::EndOfStatement))
break;
// FIXME: Improve diagnostic.
if (getLexer().isNot(AsmToken::Comma))
return Error(L, "unexpected token in directive");