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-rw-r--r--lib/Target/ARM/AsmParser/ARMAsmParser.cpp510
1 files changed, 414 insertions, 96 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 9cc89bd..59461e8 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -164,7 +164,10 @@ class ARMAsmParser : public MCTargetAsmParser {
// according to count of instructions in block.
// ~0U if no active IT block.
} ITState;
- bool inITBlock() { return ITState.CurPosition != ~0U;}
+ bool inITBlock() { return ITState.CurPosition != ~0U; }
+ bool lastInITBlock() {
+ return ITState.CurPosition == 4 - countTrailingZeros(ITState.Mask);
+ }
void forwardITPosition() {
if (!inITBlock()) return;
// Move to the next instruction in the IT block, if there is one. If not,
@@ -186,6 +189,11 @@ class ARMAsmParser : public MCTargetAsmParser {
return getParser().Error(L, Msg, Ranges);
}
+ bool validatetLDMRegList(MCInst Inst, const OperandVector &Operands,
+ unsigned ListNo, bool IsARPop = false);
+ bool validatetSTMRegList(MCInst Inst, const OperandVector &Operands,
+ unsigned ListNo);
+
int tryParseRegister();
bool tryParseRegisterWithWriteBack(OperandVector &);
int tryParseShiftRegister(OperandVector &);
@@ -305,6 +313,7 @@ class ARMAsmParser : public MCTargetAsmParser {
OperandMatchResultTy parseSetEndImm(OperandVector &);
OperandMatchResultTy parseShifterImm(OperandVector &);
OperandMatchResultTy parseRotImm(OperandVector &);
+ OperandMatchResultTy parseModImm(OperandVector &);
OperandMatchResultTy parseBitfield(OperandVector &);
OperandMatchResultTy parsePostIdxReg(OperandVector &);
OperandMatchResultTy parseAM3Offset(OperandVector &);
@@ -318,7 +327,7 @@ class ARMAsmParser : public MCTargetAsmParser {
void cvtThumbBranches(MCInst &Inst, const OperandVector &);
bool validateInstruction(MCInst &Inst, const OperandVector &Ops);
- bool processInstruction(MCInst &Inst, const OperandVector &Ops);
+ bool processInstruction(MCInst &Inst, const OperandVector &Ops, MCStreamer &Out);
bool shouldOmitCCOutOperand(StringRef Mnemonic, OperandVector &Operands);
bool shouldOmitPredicateOperand(StringRef Mnemonic, OperandVector &Operands);
@@ -400,6 +409,7 @@ class ARMOperand : public MCParsedAsmOperand {
k_ShiftedImmediate,
k_ShifterImmediate,
k_RotateImmediate,
+ k_ModifiedImmediate,
k_BitfieldDescriptor,
k_Token
} Kind;
@@ -511,6 +521,11 @@ class ARMOperand : public MCParsedAsmOperand {
unsigned Imm;
};
+ struct ModImmOp {
+ unsigned Bits;
+ unsigned Rot;
+ };
+
struct BitfieldOp {
unsigned LSB;
unsigned Width;
@@ -537,6 +552,7 @@ class ARMOperand : public MCParsedAsmOperand {
struct RegShiftedRegOp RegShiftedReg;
struct RegShiftedImmOp RegShiftedImm;
struct RotImmOp RotImm;
+ struct ModImmOp ModImm;
struct BitfieldOp Bitfield;
};
@@ -612,6 +628,9 @@ public:
case k_RotateImmediate:
RotImm = o.RotImm;
break;
+ case k_ModifiedImmediate:
+ ModImm = o.ModImm;
+ break;
case k_BitfieldDescriptor:
Bitfield = o.Bitfield;
break;
@@ -1020,33 +1039,17 @@ public:
}
bool isAdrLabel() const {
// If we have an immediate that's not a constant, treat it as a label
- // reference needing a fixup. If it is a constant, but it can't fit
- // into shift immediate encoding, we reject it.
- if (isImm() && !isa<MCConstantExpr>(getImm())) return true;
- else return (isARMSOImm() || isARMSOImmNeg());
- }
- bool isARMSOImm() const {
- if (!isImm()) return false;
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- if (!CE) return false;
- int64_t Value = CE->getValue();
- return ARM_AM::getSOImmVal(Value) != -1;
- }
- bool isARMSOImmNot() const {
- if (!isImm()) return false;
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- if (!CE) return false;
- int64_t Value = CE->getValue();
- return ARM_AM::getSOImmVal(~Value) != -1;
- }
- bool isARMSOImmNeg() const {
+ // reference needing a fixup.
+ if (isImm() && !isa<MCConstantExpr>(getImm()))
+ return true;
+
+ // If it is a constant, it must fit into a modified immediate encoding.
if (!isImm()) return false;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
if (!CE) return false;
int64_t Value = CE->getValue();
- // Only use this when not representable as a plain so_imm.
- return ARM_AM::getSOImmVal(Value) == -1 &&
- ARM_AM::getSOImmVal(-Value) != -1;
+ return (ARM_AM::getSOImmVal(Value) != -1 ||
+ ARM_AM::getSOImmVal(-Value) != -1);;
}
bool isT2SOImm() const {
if (!isImm()) return false;
@@ -1091,6 +1094,22 @@ public:
bool isRegShiftedReg() const { return Kind == k_ShiftedRegister; }
bool isRegShiftedImm() const { return Kind == k_ShiftedImmediate; }
bool isRotImm() const { return Kind == k_RotateImmediate; }
+ bool isModImm() const { return Kind == k_ModifiedImmediate; }
+ bool isModImmNot() const {
+ if (!isImm()) return false;
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ if (!CE) return false;
+ int64_t Value = CE->getValue();
+ return ARM_AM::getSOImmVal(~Value) != -1;
+ }
+ bool isModImmNeg() const {
+ if (!isImm()) return false;
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ if (!CE) return false;
+ int64_t Value = CE->getValue();
+ return ARM_AM::getSOImmVal(Value) == -1 &&
+ ARM_AM::getSOImmVal(-Value) != -1;
+ }
bool isBitfield() const { return Kind == k_BitfieldDescriptor; }
bool isPostIdxRegShifted() const { return Kind == k_PostIndexRegister; }
bool isPostIdxReg() const {
@@ -1826,6 +1845,30 @@ public:
Inst.addOperand(MCOperand::CreateImm(RotImm.Imm >> 3));
}
+ void addModImmOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+
+ // Support for fixups (MCFixup)
+ if (isImm())
+ return addImmOperands(Inst, N);
+
+ Inst.addOperand(MCOperand::CreateImm(ModImm.Bits | (ModImm.Rot << 7)));
+ }
+
+ void addModImmNotOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ uint32_t Enc = ARM_AM::getSOImmVal(~CE->getValue());
+ Inst.addOperand(MCOperand::CreateImm(Enc));
+ }
+
+ void addModImmNegOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
+ uint32_t Enc = ARM_AM::getSOImmVal(-CE->getValue());
+ Inst.addOperand(MCOperand::CreateImm(Enc));
+ }
+
void addBitfieldOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
// Munge the lsb/width into a bitfield mask.
@@ -1982,22 +2025,6 @@ public:
Inst.addOperand(MCOperand::CreateImm(Memory.OffsetImm->getValue()));
}
- void addARMSOImmNotOperands(MCInst &Inst, unsigned N) const {
- assert(N == 1 && "Invalid number of operands!");
- // The operand is actually a so_imm, but we have its bitwise
- // negation in the assembly source, so twiddle it here.
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- Inst.addOperand(MCOperand::CreateImm(~CE->getValue()));
- }
-
- void addARMSOImmNegOperands(MCInst &Inst, unsigned N) const {
- assert(N == 1 && "Invalid number of operands!");
- // The operand is actually a so_imm, but we have its
- // negation in the assembly source, so twiddle it here.
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- Inst.addOperand(MCOperand::CreateImm(-CE->getValue()));
- }
-
void addMemBarrierOptOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
Inst.addOperand(MCOperand::CreateImm(unsigned(getMemBarrierOpt())));
@@ -2630,6 +2657,16 @@ public:
return Op;
}
+ static std::unique_ptr<ARMOperand> CreateModImm(unsigned Bits, unsigned Rot,
+ SMLoc S, SMLoc E) {
+ auto Op = make_unique<ARMOperand>(k_ModifiedImmediate);
+ Op->ModImm.Bits = Bits;
+ Op->ModImm.Rot = Rot;
+ Op->StartLoc = S;
+ Op->EndLoc = E;
+ return Op;
+ }
+
static std::unique_ptr<ARMOperand>
CreateBitfield(unsigned LSB, unsigned Width, SMLoc S, SMLoc E) {
auto Op = make_unique<ARMOperand>(k_BitfieldDescriptor);
@@ -2883,6 +2920,10 @@ void ARMOperand::print(raw_ostream &OS) const {
case k_RotateImmediate:
OS << "<ror " << " #" << (RotImm.Imm * 8) << ">";
break;
+ case k_ModifiedImmediate:
+ OS << "<mod_imm #" << ModImm.Bits << ", #"
+ << ModImm.Rot << ")>";
+ break;
case k_BitfieldDescriptor:
OS << "<bitfield " << "lsb: " << Bitfield.LSB
<< ", width: " << Bitfield.Width << ">";
@@ -4339,6 +4380,123 @@ ARMAsmParser::parseRotImm(OperandVector &Operands) {
}
ARMAsmParser::OperandMatchResultTy
+ARMAsmParser::parseModImm(OperandVector &Operands) {
+ MCAsmParser &Parser = getParser();
+ MCAsmLexer &Lexer = getLexer();
+ int64_t Imm1, Imm2;
+
+ SMLoc S = Parser.getTok().getLoc();
+
+ // 1) A mod_imm operand can appear in the place of a register name:
+ // add r0, #mod_imm
+ // add r0, r0, #mod_imm
+ // to correctly handle the latter, we bail out as soon as we see an
+ // identifier.
+ //
+ // 2) Similarly, we do not want to parse into complex operands:
+ // mov r0, #mod_imm
+ // mov r0, :lower16:(_foo)
+ if (Parser.getTok().is(AsmToken::Identifier) ||
+ Parser.getTok().is(AsmToken::Colon))
+ return MatchOperand_NoMatch;
+
+ // Hash (dollar) is optional as per the ARMARM
+ if (Parser.getTok().is(AsmToken::Hash) ||
+ Parser.getTok().is(AsmToken::Dollar)) {
+ // Avoid parsing into complex operands (#:)
+ if (Lexer.peekTok().is(AsmToken::Colon))
+ return MatchOperand_NoMatch;
+
+ // Eat the hash (dollar)
+ Parser.Lex();
+ }
+
+ SMLoc Sx1, Ex1;
+ Sx1 = Parser.getTok().getLoc();
+ const MCExpr *Imm1Exp;
+ if (getParser().parseExpression(Imm1Exp, Ex1)) {
+ Error(Sx1, "malformed expression");
+ return MatchOperand_ParseFail;
+ }
+
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Imm1Exp);
+
+ if (CE) {
+ // Immediate must fit within 32-bits
+ Imm1 = CE->getValue();
+ int Enc = ARM_AM::getSOImmVal(Imm1);
+ if (Enc != -1 && Parser.getTok().is(AsmToken::EndOfStatement)) {
+ // We have a match!
+ Operands.push_back(ARMOperand::CreateModImm((Enc & 0xFF),
+ (Enc & 0xF00) >> 7,
+ Sx1, Ex1));
+ return MatchOperand_Success;
+ }
+
+ // We have parsed an immediate which is not for us, fallback to a plain
+ // immediate. This can happen for instruction aliases. For an example,
+ // ARMInstrInfo.td defines the alias [mov <-> mvn] which can transform
+ // a mov (mvn) with a mod_imm_neg/mod_imm_not operand into the opposite
+ // instruction with a mod_imm operand. The alias is defined such that the
+ // parser method is shared, that's why we have to do this here.
+ if (Parser.getTok().is(AsmToken::EndOfStatement)) {
+ Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1));
+ return MatchOperand_Success;
+ }
+ } else {
+ // Operands like #(l1 - l2) can only be evaluated at a later stage (via an
+ // MCFixup). Fallback to a plain immediate.
+ Operands.push_back(ARMOperand::CreateImm(Imm1Exp, Sx1, Ex1));
+ return MatchOperand_Success;
+ }
+
+ // From this point onward, we expect the input to be a (#bits, #rot) pair
+ if (Parser.getTok().isNot(AsmToken::Comma)) {
+ Error(Sx1, "expected modified immediate operand: #[0, 255], #even[0-30]");
+ return MatchOperand_ParseFail;
+ }
+
+ if (Imm1 & ~0xFF) {
+ Error(Sx1, "immediate operand must a number in the range [0, 255]");
+ return MatchOperand_ParseFail;
+ }
+
+ // Eat the comma
+ Parser.Lex();
+
+ // Repeat for #rot
+ SMLoc Sx2, Ex2;
+ Sx2 = Parser.getTok().getLoc();
+
+ // Eat the optional hash (dollar)
+ if (Parser.getTok().is(AsmToken::Hash) ||
+ Parser.getTok().is(AsmToken::Dollar))
+ Parser.Lex();
+
+ const MCExpr *Imm2Exp;
+ if (getParser().parseExpression(Imm2Exp, Ex2)) {
+ Error(Sx2, "malformed expression");
+ return MatchOperand_ParseFail;
+ }
+
+ CE = dyn_cast<MCConstantExpr>(Imm2Exp);
+
+ if (CE) {
+ Imm2 = CE->getValue();
+ if (!(Imm2 & ~0x1E)) {
+ // We have a match!
+ Operands.push_back(ARMOperand::CreateModImm(Imm1, Imm2, S, Ex2));
+ return MatchOperand_Success;
+ }
+ Error(Sx2, "immediate operand must an even number in the range [0, 30]");
+ return MatchOperand_ParseFail;
+ } else {
+ Error(Sx2, "constant expression expected");
+ return MatchOperand_ParseFail;
+ }
+}
+
+ARMAsmParser::OperandMatchResultTy
ARMAsmParser::parseBitfield(OperandVector &Operands) {
MCAsmParser &Parser = getParser();
SMLoc S = Parser.getTok().getLoc();
@@ -5091,15 +5249,52 @@ bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
return true;
}
+ enum {
+ COFF = (1 << MCObjectFileInfo::IsCOFF),
+ ELF = (1 << MCObjectFileInfo::IsELF),
+ MACHO = (1 << MCObjectFileInfo::IsMachO)
+ };
+ static const struct PrefixEntry {
+ const char *Spelling;
+ ARMMCExpr::VariantKind VariantKind;
+ uint8_t SupportedFormats;
+ } PrefixEntries[] = {
+ { "lower16", ARMMCExpr::VK_ARM_LO16, COFF | ELF | MACHO },
+ { "upper16", ARMMCExpr::VK_ARM_HI16, COFF | ELF | MACHO },
+ };
+
StringRef IDVal = Parser.getTok().getIdentifier();
- if (IDVal == "lower16") {
- RefKind = ARMMCExpr::VK_ARM_LO16;
- } else if (IDVal == "upper16") {
- RefKind = ARMMCExpr::VK_ARM_HI16;
- } else {
+
+ const auto &Prefix =
+ std::find_if(std::begin(PrefixEntries), std::end(PrefixEntries),
+ [&IDVal](const PrefixEntry &PE) {
+ return PE.Spelling == IDVal;
+ });
+ if (Prefix == std::end(PrefixEntries)) {
Error(Parser.getTok().getLoc(), "unexpected prefix in operand");
return true;
}
+
+ uint8_t CurrentFormat;
+ switch (getContext().getObjectFileInfo()->getObjectFileType()) {
+ case MCObjectFileInfo::IsMachO:
+ CurrentFormat = MACHO;
+ break;
+ case MCObjectFileInfo::IsELF:
+ CurrentFormat = ELF;
+ break;
+ case MCObjectFileInfo::IsCOFF:
+ CurrentFormat = COFF;
+ break;
+ }
+
+ if (~Prefix->SupportedFormats & CurrentFormat) {
+ Error(Parser.getTok().getLoc(),
+ "cannot represent relocation in the current file format");
+ return true;
+ }
+
+ RefKind = Prefix->VariantKind;
Parser.Lex();
if (getLexer().isNot(AsmToken::Colon)) {
@@ -5107,6 +5302,7 @@ bool ARMAsmParser::parsePrefix(ARMMCExpr::VariantKind &RefKind) {
return true;
}
Parser.Lex(); // Eat the last ':'
+
return false;
}
@@ -5139,7 +5335,8 @@ StringRef ARMAsmParser::splitMnemonic(StringRef Mnemonic,
Mnemonic == "fmuls" || Mnemonic == "vmaxnm" || Mnemonic == "vminnm" ||
Mnemonic == "vcvta" || Mnemonic == "vcvtn" || Mnemonic == "vcvtp" ||
Mnemonic == "vcvtm" || Mnemonic == "vrinta" || Mnemonic == "vrintn" ||
- Mnemonic == "vrintp" || Mnemonic == "vrintm" || Mnemonic.startswith("vsel"))
+ Mnemonic == "vrintp" || Mnemonic == "vrintm" || Mnemonic == "hvc" ||
+ Mnemonic.startswith("vsel"))
return Mnemonic;
// First, split out any predication code. Ignore mnemonics we know aren't
@@ -5244,7 +5441,7 @@ getMnemonicAcceptInfo(StringRef Mnemonic, StringRef FullInst,
Mnemonic == "vmaxnm" || Mnemonic == "vminnm" || Mnemonic == "vcvta" ||
Mnemonic == "vcvtn" || Mnemonic == "vcvtp" || Mnemonic == "vcvtm" ||
Mnemonic == "vrinta" || Mnemonic == "vrintn" || Mnemonic == "vrintp" ||
- Mnemonic == "vrintm" || Mnemonic.startswith("aes") ||
+ Mnemonic == "vrintm" || Mnemonic.startswith("aes") || Mnemonic == "hvc" ||
Mnemonic.startswith("sha1") || Mnemonic.startswith("sha256") ||
(FullInst.startswith("vmull") && FullInst.endswith(".p64"))) {
// These mnemonics are never predicable
@@ -5282,7 +5479,7 @@ bool ARMAsmParser::shouldOmitCCOutOperand(StringRef Mnemonic,
// conditionally adding the cc_out in the first place because we need
// to check the type of the parsed immediate operand.
if (Mnemonic == "mov" && Operands.size() > 4 && !isThumb() &&
- !static_cast<ARMOperand &>(*Operands[4]).isARMSOImm() &&
+ !static_cast<ARMOperand &>(*Operands[4]).isModImm() &&
static_cast<ARMOperand &>(*Operands[4]).isImm0_65535Expr() &&
static_cast<ARMOperand &>(*Operands[1]).getReg() == 0)
return true;
@@ -5823,6 +6020,50 @@ static bool instIsBreakpoint(const MCInst &Inst) {
}
+bool ARMAsmParser::validatetLDMRegList(MCInst Inst,
+ const OperandVector &Operands,
+ unsigned ListNo, bool IsARPop) {
+ const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]);
+ bool HasWritebackToken = Op.isToken() && Op.getToken() == "!";
+
+ bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP);
+ bool ListContainsLR = listContainsReg(Inst, ListNo, ARM::LR);
+ bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC);
+
+ if (!IsARPop && ListContainsSP)
+ return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
+ "SP may not be in the register list");
+ else if (ListContainsPC && ListContainsLR)
+ return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
+ "PC and LR may not be in the register list simultaneously");
+ else if (inITBlock() && !lastInITBlock() && ListContainsPC)
+ return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
+ "instruction must be outside of IT block or the last "
+ "instruction in an IT block");
+ return false;
+}
+
+bool ARMAsmParser::validatetSTMRegList(MCInst Inst,
+ const OperandVector &Operands,
+ unsigned ListNo) {
+ const ARMOperand &Op = static_cast<const ARMOperand &>(*Operands[ListNo]);
+ bool HasWritebackToken = Op.isToken() && Op.getToken() == "!";
+
+ bool ListContainsSP = listContainsReg(Inst, ListNo, ARM::SP);
+ bool ListContainsPC = listContainsReg(Inst, ListNo, ARM::PC);
+
+ if (ListContainsSP && ListContainsPC)
+ return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
+ "SP and PC may not be in the register list");
+ else if (ListContainsSP)
+ return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
+ "SP may not be in the register list");
+ else if (ListContainsPC)
+ return Error(Operands[ListNo + HasWritebackToken]->getStartLoc(),
+ "PC may not be in the register list");
+ return false;
+}
+
// FIXME: We would really like to be able to tablegen'erate this.
bool ARMAsmParser::validateInstruction(MCInst &Inst,
const OperandVector &Operands) {
@@ -6006,9 +6247,9 @@ bool ARMAsmParser::validateInstruction(MCInst &Inst,
return Error(Operands[3]->getStartLoc(),
"writeback operator '!' not allowed when base register "
"in register list");
- if (listContainsReg(Inst, 3 + HasWritebackToken, ARM::SP))
- return Error(Operands[3 + HasWritebackToken]->getStartLoc(),
- "SP not allowed in register list");
+
+ if (validatetLDMRegList(Inst, Operands, 3))
+ return true;
break;
}
case ARM::LDMIA_UPD:
@@ -6025,13 +6266,14 @@ bool ARMAsmParser::validateInstruction(MCInst &Inst,
break;
case ARM::t2LDMIA:
case ARM::t2LDMDB:
+ if (validatetLDMRegList(Inst, Operands, 3))
+ return true;
+ break;
case ARM::t2STMIA:
- case ARM::t2STMDB: {
- if (listContainsReg(Inst, 3, ARM::SP))
- return Error(Operands.back()->getStartLoc(),
- "SP not allowed in register list");
+ case ARM::t2STMDB:
+ if (validatetSTMRegList(Inst, Operands, 3))
+ return true;
break;
- }
case ARM::t2LDMIA_UPD:
case ARM::t2LDMDB_UPD:
case ARM::t2STMIA_UPD:
@@ -6040,9 +6282,13 @@ bool ARMAsmParser::validateInstruction(MCInst &Inst,
return Error(Operands.back()->getStartLoc(),
"writeback register not allowed in register list");
- if (listContainsReg(Inst, 4, ARM::SP))
- return Error(Operands.back()->getStartLoc(),
- "SP not allowed in register list");
+ if (Opcode == ARM::t2LDMIA_UPD || Opcode == ARM::t2LDMDB_UPD) {
+ if (validatetLDMRegList(Inst, Operands, 3))
+ return true;
+ } else {
+ if (validatetSTMRegList(Inst, Operands, 3))
+ return true;
+ }
break;
}
case ARM::sysLDMIA_UPD:
@@ -6087,6 +6333,8 @@ bool ARMAsmParser::validateInstruction(MCInst &Inst,
!isThumbTwo())
return Error(Operands[2]->getStartLoc(),
"registers must be in range r0-r7 or pc");
+ if (validatetLDMRegList(Inst, Operands, 2, !isMClass()))
+ return true;
break;
}
case ARM::tPUSH: {
@@ -6095,6 +6343,8 @@ bool ARMAsmParser::validateInstruction(MCInst &Inst,
!isThumbTwo())
return Error(Operands[2]->getStartLoc(),
"registers must be in range r0-r7 or lr");
+ if (validatetSTMRegList(Inst, Operands, 2))
+ return true;
break;
}
case ARM::tSTMIA_UPD: {
@@ -6111,9 +6361,9 @@ bool ARMAsmParser::validateInstruction(MCInst &Inst,
return Error(Operands[4]->getStartLoc(),
"writeback operator '!' not allowed when base register "
"in register list");
- if (listContainsReg(Inst, 4, ARM::SP) && !inITBlock())
- return Error(Operands.back()->getStartLoc(),
- "SP not allowed in register list");
+
+ if (validatetSTMRegList(Inst, Operands, 4))
+ return true;
break;
}
case ARM::tADDrSP: {
@@ -6434,7 +6684,8 @@ static unsigned getRealVLDOpcode(unsigned Opc, unsigned &Spacing) {
}
bool ARMAsmParser::processInstruction(MCInst &Inst,
- const OperandVector &Operands) {
+ const OperandVector &Operands,
+ MCStreamer &Out) {
switch (Inst.getOpcode()) {
// Alias for alternate form of 'ldr{,b}t Rt, [Rn], #imm' instruction.
case ARM::LDRT_POST:
@@ -6475,12 +6726,35 @@ bool ARMAsmParser::processInstruction(MCInst &Inst,
// Alias for alternate form of 'ADR Rd, #imm' instruction.
case ARM::ADDri: {
if (Inst.getOperand(1).getReg() != ARM::PC ||
- Inst.getOperand(5).getReg() != 0)
+ Inst.getOperand(5).getReg() != 0 ||
+ !(Inst.getOperand(2).isExpr() || Inst.getOperand(2).isImm()))
return false;
MCInst TmpInst;
TmpInst.setOpcode(ARM::ADR);
TmpInst.addOperand(Inst.getOperand(0));
- TmpInst.addOperand(Inst.getOperand(2));
+ if (Inst.getOperand(2).isImm()) {
+ // Immediate (mod_imm) will be in its encoded form, we must unencode it
+ // before passing it to the ADR instruction.
+ unsigned Enc = Inst.getOperand(2).getImm();
+ TmpInst.addOperand(MCOperand::CreateImm(
+ ARM_AM::rotr32(Enc & 0xFF, (Enc & 0xF00) >> 7)));
+ } else {
+ // Turn PC-relative expression into absolute expression.
+ // Reading PC provides the start of the current instruction + 8 and
+ // the transform to adr is biased by that.
+ MCSymbol *Dot = getContext().CreateTempSymbol();
+ Out.EmitLabel(Dot);
+ const MCExpr *OpExpr = Inst.getOperand(2).getExpr();
+ const MCExpr *InstPC = MCSymbolRefExpr::Create(Dot,
+ MCSymbolRefExpr::VK_None,
+ getContext());
+ const MCExpr *Const8 = MCConstantExpr::Create(8, getContext());
+ const MCExpr *ReadPC = MCBinaryExpr::CreateAdd(InstPC, Const8,
+ getContext());
+ const MCExpr *FixupAddr = MCBinaryExpr::CreateAdd(ReadPC, OpExpr,
+ getContext());
+ TmpInst.addOperand(MCOperand::CreateExpr(FixupAddr));
+ }
TmpInst.addOperand(Inst.getOperand(3));
TmpInst.addOperand(Inst.getOperand(4));
Inst = TmpInst;
@@ -8302,7 +8576,6 @@ bool ARMAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
MatchResult = MatchInstructionImpl(Operands, Inst, ErrorInfo,
MatchingInlineAsm);
switch (MatchResult) {
- default: break;
case Match_Success:
// Context sensitive operand constraints aren't handled by the matcher,
// so check them here.
@@ -8320,7 +8593,7 @@ bool ARMAsmParser::MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
// encoding is selected. Loop on it while changes happen so the
// individual transformations can chain off each other. E.g.,
// tPOP(r8)->t2LDMIA_UPD(sp,r8)->t2STR_POST(sp,r8)
- while (processInstruction(Inst, Operands))
+ while (processInstruction(Inst, Operands, Out))
;
// Only after the instruction is fully processed, we can validate it
@@ -8732,7 +9005,7 @@ bool ARMAsmParser::parseDirectiveReq(StringRef Name, SMLoc L) {
Parser.Lex(); // Consume the EndOfStatement
- if (!RegisterReqs.insert(std::make_pair(Name, Reg)).second) {
+ if (RegisterReqs.insert(std::make_pair(Name, Reg)).first->second != Reg) {
Error(SRegLoc, "redefinition of '" + Name + "' does not match original.");
return false;
}
@@ -8858,8 +9131,13 @@ bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
if (Tag == ARMBuildAttrs::compatibility) {
if (Parser.getTok().isNot(AsmToken::Comma))
IsStringValue = false;
- else
- Parser.Lex();
+ if (Parser.getTok().isNot(AsmToken::Comma)) {
+ Error(Parser.getTok().getLoc(), "comma expected");
+ Parser.eatToEndOfStatement();
+ return false;
+ } else {
+ Parser.Lex();
+ }
}
if (IsStringValue) {
@@ -8888,38 +9166,78 @@ bool ARMAsmParser::parseDirectiveEabiAttr(SMLoc L) {
bool ARMAsmParser::parseDirectiveCPU(SMLoc L) {
StringRef CPU = getParser().parseStringToEndOfStatement().trim();
getTargetStreamer().emitTextAttribute(ARMBuildAttrs::CPU_name, CPU);
+
+ if (!STI.isCPUStringValid(CPU)) {
+ Error(L, "Unknown CPU name");
+ return false;
+ }
+
+ // FIXME: This switches the CPU features globally, therefore it might
+ // happen that code you would not expect to assemble will. For details
+ // see: http://llvm.org/bugs/show_bug.cgi?id=20757
+ STI.InitMCProcessorInfo(CPU, "");
+ STI.InitCPUSchedModel(CPU);
+ setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
+
return false;
}
// FIXME: This is duplicated in getARMFPUFeatures() in
// tools/clang/lib/Driver/Tools.cpp
static const struct {
- const unsigned Fpu;
+ const unsigned ID;
const uint64_t Enabled;
const uint64_t Disabled;
-} Fpus[] = {
- {ARM::VFP, ARM::FeatureVFP2, ARM::FeatureNEON},
- {ARM::VFPV2, ARM::FeatureVFP2, ARM::FeatureNEON},
- {ARM::VFPV3, ARM::FeatureVFP3, ARM::FeatureNEON},
- {ARM::VFPV3_D16, ARM::FeatureVFP3 | ARM::FeatureD16, ARM::FeatureNEON},
- {ARM::VFPV4, ARM::FeatureVFP4, ARM::FeatureNEON},
- {ARM::VFPV4_D16, ARM::FeatureVFP4 | ARM::FeatureD16, ARM::FeatureNEON},
- {ARM::FPV5_D16, ARM::FeatureFPARMv8 | ARM::FeatureD16,
- ARM::FeatureNEON | ARM::FeatureCrypto},
- {ARM::FP_ARMV8, ARM::FeatureFPARMv8,
- ARM::FeatureNEON | ARM::FeatureCrypto},
- {ARM::NEON, ARM::FeatureNEON, 0},
- {ARM::NEON_VFPV4, ARM::FeatureVFP4 | ARM::FeatureNEON, 0},
- {ARM::NEON_FP_ARMV8, ARM::FeatureFPARMv8 | ARM::FeatureNEON,
- ARM::FeatureCrypto},
- {ARM::CRYPTO_NEON_FP_ARMV8,
- ARM::FeatureFPARMv8 | ARM::FeatureNEON | ARM::FeatureCrypto, 0},
- {ARM::SOFTVFP, 0, 0},
+} FPUs[] = {
+ {/* ID */ ARM::VFP,
+ /* Enabled */ ARM::FeatureVFP2,
+ /* Disabled */ ARM::FeatureNEON},
+ {/* ID */ ARM::VFPV2,
+ /* Enabled */ ARM::FeatureVFP2,
+ /* Disabled */ ARM::FeatureNEON},
+ {/* ID */ ARM::VFPV3,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3,
+ /* Disabled */ ARM::FeatureNEON | ARM::FeatureD16},
+ {/* ID */ ARM::VFPV3_D16,
+ /* Enable */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureD16,
+ /* Disabled */ ARM::FeatureNEON},
+ {/* ID */ ARM::VFPV4,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4,
+ /* Disabled */ ARM::FeatureNEON | ARM::FeatureD16},
+ {/* ID */ ARM::VFPV4_D16,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
+ ARM::FeatureD16,
+ /* Disabled */ ARM::FeatureNEON},
+ {/* ID */ ARM::FPV5_D16,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
+ ARM::FeatureFPARMv8 | ARM::FeatureD16,
+ /* Disabled */ ARM::FeatureNEON | ARM::FeatureCrypto},
+ {/* ID */ ARM::FP_ARMV8,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
+ ARM::FeatureFPARMv8,
+ /* Disabled */ ARM::FeatureNEON | ARM::FeatureCrypto | ARM::FeatureD16},
+ {/* ID */ ARM::NEON,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureNEON,
+ /* Disabled */ ARM::FeatureD16},
+ {/* ID */ ARM::NEON_VFPV4,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
+ ARM::FeatureNEON,
+ /* Disabled */ ARM::FeatureD16},
+ {/* ID */ ARM::NEON_FP_ARMV8,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
+ ARM::FeatureFPARMv8 | ARM::FeatureNEON,
+ /* Disabled */ ARM::FeatureCrypto | ARM::FeatureD16},
+ {/* ID */ ARM::CRYPTO_NEON_FP_ARMV8,
+ /* Enabled */ ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
+ ARM::FeatureFPARMv8 | ARM::FeatureNEON | ARM::FeatureCrypto,
+ /* Disabled */ ARM::FeatureD16},
+ {ARM::SOFTVFP, 0, 0},
};
/// parseDirectiveFPU
/// ::= .fpu str
bool ARMAsmParser::parseDirectiveFPU(SMLoc L) {
+ SMLoc FPUNameLoc = getTok().getLoc();
StringRef FPU = getParser().parseStringToEndOfStatement().trim();
unsigned ID = StringSwitch<unsigned>(FPU)
@@ -8928,18 +9246,18 @@ bool ARMAsmParser::parseDirectiveFPU(SMLoc L) {
.Default(ARM::INVALID_FPU);
if (ID == ARM::INVALID_FPU) {
- Error(L, "Unknown FPU name");
+ Error(FPUNameLoc, "Unknown FPU name");
return false;
}
- for (const auto &Fpu : Fpus) {
- if (Fpu.Fpu != ID)
+ for (const auto &Entry : FPUs) {
+ if (Entry.ID != ID)
continue;
// Need to toggle features that should be on but are off and that
// should off but are on.
- uint64_t Toggle = (Fpu.Enabled & ~STI.getFeatureBits()) |
- (Fpu.Disabled & STI.getFeatureBits());
+ uint64_t Toggle = (Entry.Enabled & ~STI.getFeatureBits()) |
+ (Entry.Disabled & STI.getFeatureBits());
setAvailableFeatures(ComputeAvailableFeatures(STI.ToggleFeature(Toggle)));
break;
}
@@ -9766,7 +10084,7 @@ unsigned ARMAsmParser::validateTargetOperandClass(MCParsedAsmOperand &AsmOp,
if (CE->getValue() == 0)
return Match_Success;
break;
- case MCK_ARMSOImm:
+ case MCK_ModImm:
if (Op.isImm()) {
const MCExpr *SOExpr = Op.getImm();
int64_t Value;
generated by cgit v1.1 at 2024-12-22 11:07:38 +0000