mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 11:42:57 +01:00
[ARM64] Check for proper immediate in shift/extend operands
llvm-svn: 208317
This commit is contained in:
Bradley Smith
parent
35d96c7f86
commit
0bcfb4a0bc
@ -56,8 +56,6 @@ private:
|
||||
bool parseCondCode(OperandVector &Operands, bool invertCondCode);
|
||||
int tryParseRegister();
|
||||
int tryMatchVectorRegister(StringRef &Kind, bool expected);
|
||||
bool parseOptionalShift(OperandVector &Operands);
|
||||
bool parseOptionalExtend(OperandVector &Operands);
|
||||
bool parseRegister(OperandVector &Operands);
|
||||
bool parseMemory(OperandVector &Operands);
|
||||
bool parseSymbolicImmVal(const MCExpr *&ImmVal);
|
||||
@ -87,6 +85,8 @@ private:
|
||||
|
||||
/// }
|
||||
|
||||
OperandMatchResultTy tryParseOptionalShift(OperandVector &Operands);
|
||||
OperandMatchResultTy tryParseOptionalExtend(OperandVector &Operands);
|
||||
OperandMatchResultTy tryParseNoIndexMemory(OperandVector &Operands);
|
||||
OperandMatchResultTy tryParseBarrierOperand(OperandVector &Operands);
|
||||
OperandMatchResultTy tryParseMRSSystemRegister(OperandVector &Operands);
|
||||
@ -2277,60 +2277,72 @@ bool ARM64AsmParser::parseCondCode(OperandVector &Operands,
|
||||
return false;
|
||||
}
|
||||
|
||||
/// ParseOptionalShift - Some operands take an optional shift argument. Parse
|
||||
/// tryParseOptionalShift - Some operands take an optional shift argument. Parse
|
||||
/// them if present.
|
||||
bool ARM64AsmParser::parseOptionalShift(OperandVector &Operands) {
|
||||
ARM64AsmParser::OperandMatchResultTy
|
||||
ARM64AsmParser::tryParseOptionalShift(OperandVector &Operands) {
|
||||
const AsmToken &Tok = Parser.getTok();
|
||||
ARM64_AM::ShiftType ShOp = StringSwitch<ARM64_AM::ShiftType>(Tok.getString())
|
||||
std::string LowerID = Tok.getString().lower();
|
||||
ARM64_AM::ShiftType ShOp = StringSwitch<ARM64_AM::ShiftType>(LowerID)
|
||||
.Case("lsl", ARM64_AM::LSL)
|
||||
.Case("lsr", ARM64_AM::LSR)
|
||||
.Case("asr", ARM64_AM::ASR)
|
||||
.Case("ror", ARM64_AM::ROR)
|
||||
.Case("msl", ARM64_AM::MSL)
|
||||
.Case("LSL", ARM64_AM::LSL)
|
||||
.Case("LSR", ARM64_AM::LSR)
|
||||
.Case("ASR", ARM64_AM::ASR)
|
||||
.Case("ROR", ARM64_AM::ROR)
|
||||
.Case("MSL", ARM64_AM::MSL)
|
||||
.Default(ARM64_AM::InvalidShift);
|
||||
if (ShOp == ARM64_AM::InvalidShift)
|
||||
return true;
|
||||
return MatchOperand_NoMatch;
|
||||
|
||||
SMLoc S = Tok.getLoc();
|
||||
Parser.Lex();
|
||||
|
||||
// We expect a number here.
|
||||
bool Hash = getLexer().is(AsmToken::Hash);
|
||||
if (!Hash && getLexer().isNot(AsmToken::Integer))
|
||||
return TokError("immediate value expected for shifter operand");
|
||||
if (!Hash && getLexer().isNot(AsmToken::Integer)) {
|
||||
TokError("immediate value expected for shifter operand");
|
||||
return MatchOperand_ParseFail;
|
||||
}
|
||||
|
||||
if (Hash)
|
||||
Parser.Lex(); // Eat the '#'.
|
||||
|
||||
// Make sure we do actually have a number
|
||||
if (!Parser.getTok().is(AsmToken::Integer)) {
|
||||
Error(Parser.getTok().getLoc(),
|
||||
"expected integer shift amount");
|
||||
return MatchOperand_ParseFail;
|
||||
}
|
||||
|
||||
SMLoc ExprLoc = getLoc();
|
||||
const MCExpr *ImmVal;
|
||||
if (getParser().parseExpression(ImmVal))
|
||||
return true;
|
||||
return MatchOperand_ParseFail;
|
||||
|
||||
const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
|
||||
if (!MCE)
|
||||
return TokError("immediate value expected for shifter operand");
|
||||
if (!MCE) {
|
||||
TokError("immediate value expected for shifter operand");
|
||||
return MatchOperand_ParseFail;
|
||||
}
|
||||
|
||||
if ((MCE->getValue() & 0x3f) != MCE->getValue())
|
||||
return Error(ExprLoc, "immediate value too large for shifter operand");
|
||||
if ((MCE->getValue() & 0x3f) != MCE->getValue()) {
|
||||
Error(ExprLoc, "immediate value too large for shifter operand");
|
||||
return MatchOperand_ParseFail;
|
||||
}
|
||||
|
||||
SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1);
|
||||
Operands.push_back(
|
||||
ARM64Operand::CreateShifter(ShOp, MCE->getValue(), S, E, getContext()));
|
||||
return false;
|
||||
return MatchOperand_Success;
|
||||
}
|
||||
|
||||
/// parseOptionalExtend - Some operands take an optional extend argument. Parse
|
||||
/// tryParseOptionalExtend - Some operands take an optional extend argument. Parse
|
||||
/// them if present.
|
||||
bool ARM64AsmParser::parseOptionalExtend(OperandVector &Operands) {
|
||||
ARM64AsmParser::OperandMatchResultTy
|
||||
ARM64AsmParser::tryParseOptionalExtend(OperandVector &Operands) {
|
||||
const AsmToken &Tok = Parser.getTok();
|
||||
std::string LowerID = Tok.getString().lower();
|
||||
ARM64_AM::ExtendType ExtOp =
|
||||
StringSwitch<ARM64_AM::ExtendType>(Tok.getString())
|
||||
StringSwitch<ARM64_AM::ExtendType>(LowerID)
|
||||
.Case("uxtb", ARM64_AM::UXTB)
|
||||
.Case("uxth", ARM64_AM::UXTH)
|
||||
.Case("uxtw", ARM64_AM::UXTW)
|
||||
@ -2340,18 +2352,9 @@ bool ARM64AsmParser::parseOptionalExtend(OperandVector &Operands) {
|
||||
.Case("sxth", ARM64_AM::SXTH)
|
||||
.Case("sxtw", ARM64_AM::SXTW)
|
||||
.Case("sxtx", ARM64_AM::SXTX)
|
||||
.Case("UXTB", ARM64_AM::UXTB)
|
||||
.Case("UXTH", ARM64_AM::UXTH)
|
||||
.Case("UXTW", ARM64_AM::UXTW)
|
||||
.Case("UXTX", ARM64_AM::UXTX)
|
||||
.Case("LSL", ARM64_AM::UXTX) // Alias for UXTX
|
||||
.Case("SXTB", ARM64_AM::SXTB)
|
||||
.Case("SXTH", ARM64_AM::SXTH)
|
||||
.Case("SXTW", ARM64_AM::SXTW)
|
||||
.Case("SXTX", ARM64_AM::SXTX)
|
||||
.Default(ARM64_AM::InvalidExtend);
|
||||
if (ExtOp == ARM64_AM::InvalidExtend)
|
||||
return true;
|
||||
return MatchOperand_NoMatch;
|
||||
|
||||
SMLoc S = Tok.getLoc();
|
||||
Parser.Lex();
|
||||
@ -2361,7 +2364,7 @@ bool ARM64AsmParser::parseOptionalExtend(OperandVector &Operands) {
|
||||
SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1);
|
||||
Operands.push_back(
|
||||
ARM64Operand::CreateExtend(ExtOp, 0, S, E, getContext()));
|
||||
return false;
|
||||
return MatchOperand_Success;
|
||||
}
|
||||
|
||||
bool Hash = getLexer().is(AsmToken::Hash);
|
||||
@ -2369,24 +2372,33 @@ bool ARM64AsmParser::parseOptionalExtend(OperandVector &Operands) {
|
||||
SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1);
|
||||
Operands.push_back(
|
||||
ARM64Operand::CreateExtend(ExtOp, 0, S, E, getContext()));
|
||||
return false;
|
||||
return MatchOperand_Success;
|
||||
}
|
||||
|
||||
if (Hash)
|
||||
Parser.Lex(); // Eat the '#'.
|
||||
|
||||
// Make sure we do actually have a number
|
||||
if (!Parser.getTok().is(AsmToken::Integer)) {
|
||||
Error(Parser.getTok().getLoc(),
|
||||
"expected integer shift amount");
|
||||
return MatchOperand_ParseFail;
|
||||
}
|
||||
|
||||
const MCExpr *ImmVal;
|
||||
if (getParser().parseExpression(ImmVal))
|
||||
return true;
|
||||
return MatchOperand_ParseFail;
|
||||
|
||||
const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(ImmVal);
|
||||
if (!MCE)
|
||||
return TokError("immediate value expected for extend operand");
|
||||
if (!MCE) {
|
||||
TokError("immediate value expected for extend operand");
|
||||
return MatchOperand_ParseFail;
|
||||
}
|
||||
|
||||
SMLoc E = SMLoc::getFromPointer(getLoc().getPointer() - 1);
|
||||
Operands.push_back(
|
||||
ARM64Operand::CreateExtend(ExtOp, MCE->getValue(), S, E, getContext()));
|
||||
return false;
|
||||
return MatchOperand_Success;
|
||||
}
|
||||
|
||||
/// parseSysAlias - The IC, DC, AT, and TLBI instructions are simple aliases for
|
||||
@ -3216,12 +3228,16 @@ bool ARM64AsmParser::parseOperand(OperandVector &Operands, bool isCondCode,
|
||||
return false;
|
||||
|
||||
// This could be an optional "shift" operand.
|
||||
if (!parseOptionalShift(Operands))
|
||||
return false;
|
||||
OperandMatchResultTy GotShift = tryParseOptionalShift(Operands);
|
||||
// We can only continue if no tokens were eaten.
|
||||
if (GotShift != MatchOperand_NoMatch)
|
||||
return GotShift;
|
||||
|
||||
// Or maybe it could be an optional "extend" operand.
|
||||
if (!parseOptionalExtend(Operands))
|
||||
return false;
|
||||
OperandMatchResultTy GotExtend = tryParseOptionalExtend(Operands);
|
||||
// We can only continue if no tokens were eaten.
|
||||
if (GotExtend != MatchOperand_NoMatch)
|
||||
return GotExtend;
|
||||
|
||||
// This was not a register so parse other operands that start with an
|
||||
// identifier (like labels) as expressions and create them as immediates.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user