//===----------------------------------------------------------------------===//
#include "MCTargetDesc/X86BaseInfo.h"
+#include "X86AsmInstrumentation.h"
+#include "X86AsmParserCommon.h"
+#include "X86Operand.h"
#include "llvm/ADT/APFloat.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
+#include <memory>
using namespace llvm;
namespace {
-struct X86Operand;
+
+static const char OpPrecedence[] = {
+ 0, // IC_OR
+ 1, // IC_AND
+ 2, // IC_LSHIFT
+ 2, // IC_RSHIFT
+ 3, // IC_PLUS
+ 3, // IC_MINUS
+ 4, // IC_MULTIPLY
+ 4, // IC_DIVIDE
+ 5, // IC_RPAREN
+ 6, // IC_LPAREN
+ 0, // IC_IMM
+ 0 // IC_REGISTER
+};
class X86AsmParser : public MCTargetAsmParser {
MCSubtargetInfo &STI;
MCAsmParser &Parser;
ParseInstructionInfo *InstInfo;
+ std::unique_ptr<X86AsmInstrumentation> Instrumentation;
private:
+ SMLoc consumeToken() {
+ SMLoc Result = Parser.getTok().getLoc();
+ Parser.Lex();
+ return Result;
+ }
+
+ enum InfixCalculatorTok {
+ IC_OR = 0,
+ IC_AND,
+ IC_LSHIFT,
+ IC_RSHIFT,
+ IC_PLUS,
+ IC_MINUS,
+ IC_MULTIPLY,
+ IC_DIVIDE,
+ IC_RPAREN,
+ IC_LPAREN,
+ IC_IMM,
+ IC_REGISTER
+ };
+
+ class InfixCalculator {
+ typedef std::pair< InfixCalculatorTok, int64_t > ICToken;
+ SmallVector<InfixCalculatorTok, 4> InfixOperatorStack;
+ SmallVector<ICToken, 4> PostfixStack;
+
+ public:
+ int64_t popOperand() {
+ assert (!PostfixStack.empty() && "Poped an empty stack!");
+ ICToken Op = PostfixStack.pop_back_val();
+ assert ((Op.first == IC_IMM || Op.first == IC_REGISTER)
+ && "Expected and immediate or register!");
+ return Op.second;
+ }
+ void pushOperand(InfixCalculatorTok Op, int64_t Val = 0) {
+ assert ((Op == IC_IMM || Op == IC_REGISTER) &&
+ "Unexpected operand!");
+ PostfixStack.push_back(std::make_pair(Op, Val));
+ }
+
+ void popOperator() { InfixOperatorStack.pop_back(); }
+ void pushOperator(InfixCalculatorTok Op) {
+ // Push the new operator if the stack is empty.
+ if (InfixOperatorStack.empty()) {
+ InfixOperatorStack.push_back(Op);
+ return;
+ }
+
+ // Push the new operator if it has a higher precedence than the operator
+ // on the top of the stack or the operator on the top of the stack is a
+ // left parentheses.
+ unsigned Idx = InfixOperatorStack.size() - 1;
+ InfixCalculatorTok StackOp = InfixOperatorStack[Idx];
+ if (OpPrecedence[Op] > OpPrecedence[StackOp] || StackOp == IC_LPAREN) {
+ InfixOperatorStack.push_back(Op);
+ return;
+ }
+
+ // The operator on the top of the stack has higher precedence than the
+ // new operator.
+ unsigned ParenCount = 0;
+ while (1) {
+ // Nothing to process.
+ if (InfixOperatorStack.empty())
+ break;
+
+ Idx = InfixOperatorStack.size() - 1;
+ StackOp = InfixOperatorStack[Idx];
+ if (!(OpPrecedence[StackOp] >= OpPrecedence[Op] || ParenCount))
+ break;
+
+ // If we have an even parentheses count and we see a left parentheses,
+ // then stop processing.
+ if (!ParenCount && StackOp == IC_LPAREN)
+ break;
+
+ if (StackOp == IC_RPAREN) {
+ ++ParenCount;
+ InfixOperatorStack.pop_back();
+ } else if (StackOp == IC_LPAREN) {
+ --ParenCount;
+ InfixOperatorStack.pop_back();
+ } else {
+ InfixOperatorStack.pop_back();
+ PostfixStack.push_back(std::make_pair(StackOp, 0));
+ }
+ }
+ // Push the new operator.
+ InfixOperatorStack.push_back(Op);
+ }
+ int64_t execute() {
+ // Push any remaining operators onto the postfix stack.
+ while (!InfixOperatorStack.empty()) {
+ InfixCalculatorTok StackOp = InfixOperatorStack.pop_back_val();
+ if (StackOp != IC_LPAREN && StackOp != IC_RPAREN)
+ PostfixStack.push_back(std::make_pair(StackOp, 0));
+ }
+
+ if (PostfixStack.empty())
+ return 0;
+
+ SmallVector<ICToken, 16> OperandStack;
+ for (unsigned i = 0, e = PostfixStack.size(); i != e; ++i) {
+ ICToken Op = PostfixStack[i];
+ if (Op.first == IC_IMM || Op.first == IC_REGISTER) {
+ OperandStack.push_back(Op);
+ } else {
+ assert (OperandStack.size() > 1 && "Too few operands.");
+ int64_t Val;
+ ICToken Op2 = OperandStack.pop_back_val();
+ ICToken Op1 = OperandStack.pop_back_val();
+ switch (Op.first) {
+ default:
+ report_fatal_error("Unexpected operator!");
+ break;
+ case IC_PLUS:
+ Val = Op1.second + Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ case IC_MINUS:
+ Val = Op1.second - Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ case IC_MULTIPLY:
+ assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
+ "Multiply operation with an immediate and a register!");
+ Val = Op1.second * Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ case IC_DIVIDE:
+ assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
+ "Divide operation with an immediate and a register!");
+ assert (Op2.second != 0 && "Division by zero!");
+ Val = Op1.second / Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ case IC_OR:
+ assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
+ "Or operation with an immediate and a register!");
+ Val = Op1.second | Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ case IC_AND:
+ assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
+ "And operation with an immediate and a register!");
+ Val = Op1.second & Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ case IC_LSHIFT:
+ assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
+ "Left shift operation with an immediate and a register!");
+ Val = Op1.second << Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ case IC_RSHIFT:
+ assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
+ "Right shift operation with an immediate and a register!");
+ Val = Op1.second >> Op2.second;
+ OperandStack.push_back(std::make_pair(IC_IMM, Val));
+ break;
+ }
+ }
+ }
+ assert (OperandStack.size() == 1 && "Expected a single result.");
+ return OperandStack.pop_back_val().second;
+ }
+ };
+
+ enum IntelExprState {
+ IES_OR,
+ IES_AND,
+ IES_LSHIFT,
+ IES_RSHIFT,
+ IES_PLUS,
+ IES_MINUS,
+ IES_MULTIPLY,
+ IES_DIVIDE,
+ IES_LBRAC,
+ IES_RBRAC,
+ IES_LPAREN,
+ IES_RPAREN,
+ IES_REGISTER,
+ IES_INTEGER,
+ IES_IDENTIFIER,
+ IES_ERROR
+ };
+
+ class IntelExprStateMachine {
+ IntelExprState State, PrevState;
+ unsigned BaseReg, IndexReg, TmpReg, Scale;
+ int64_t Imm;
+ const MCExpr *Sym;
+ StringRef SymName;
+ bool StopOnLBrac, AddImmPrefix;
+ InfixCalculator IC;
+ InlineAsmIdentifierInfo Info;
+ public:
+ IntelExprStateMachine(int64_t imm, bool stoponlbrac, bool addimmprefix) :
+ State(IES_PLUS), PrevState(IES_ERROR), BaseReg(0), IndexReg(0), TmpReg(0),
+ Scale(1), Imm(imm), Sym(0), StopOnLBrac(stoponlbrac),
+ AddImmPrefix(addimmprefix) { Info.clear(); }
+
+ unsigned getBaseReg() { return BaseReg; }
+ unsigned getIndexReg() { return IndexReg; }
+ unsigned getScale() { return Scale; }
+ const MCExpr *getSym() { return Sym; }
+ StringRef getSymName() { return SymName; }
+ int64_t getImm() { return Imm + IC.execute(); }
+ bool isValidEndState() {
+ return State == IES_RBRAC || State == IES_INTEGER;
+ }
+ bool getStopOnLBrac() { return StopOnLBrac; }
+ bool getAddImmPrefix() { return AddImmPrefix; }
+ bool hadError() { return State == IES_ERROR; }
+
+ InlineAsmIdentifierInfo &getIdentifierInfo() {
+ return Info;
+ }
+
+ void onOr() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_RPAREN:
+ case IES_REGISTER:
+ State = IES_OR;
+ IC.pushOperator(IC_OR);
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onAnd() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_RPAREN:
+ case IES_REGISTER:
+ State = IES_AND;
+ IC.pushOperator(IC_AND);
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onLShift() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_RPAREN:
+ case IES_REGISTER:
+ State = IES_LSHIFT;
+ IC.pushOperator(IC_LSHIFT);
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onRShift() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_RPAREN:
+ case IES_REGISTER:
+ State = IES_RSHIFT;
+ IC.pushOperator(IC_RSHIFT);
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onPlus() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_RPAREN:
+ case IES_REGISTER:
+ State = IES_PLUS;
+ IC.pushOperator(IC_PLUS);
+ if (CurrState == IES_REGISTER && PrevState != IES_MULTIPLY) {
+ // If we already have a BaseReg, then assume this is the IndexReg with
+ // a scale of 1.
+ if (!BaseReg) {
+ BaseReg = TmpReg;
+ } else {
+ assert (!IndexReg && "BaseReg/IndexReg already set!");
+ IndexReg = TmpReg;
+ Scale = 1;
+ }
+ }
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onMinus() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_PLUS:
+ case IES_MULTIPLY:
+ case IES_DIVIDE:
+ case IES_LPAREN:
+ case IES_RPAREN:
+ case IES_LBRAC:
+ case IES_RBRAC:
+ case IES_INTEGER:
+ case IES_REGISTER:
+ State = IES_MINUS;
+ // Only push the minus operator if it is not a unary operator.
+ if (!(CurrState == IES_PLUS || CurrState == IES_MINUS ||
+ CurrState == IES_MULTIPLY || CurrState == IES_DIVIDE ||
+ CurrState == IES_LPAREN || CurrState == IES_LBRAC))
+ IC.pushOperator(IC_MINUS);
+ if (CurrState == IES_REGISTER && PrevState != IES_MULTIPLY) {
+ // If we already have a BaseReg, then assume this is the IndexReg with
+ // a scale of 1.
+ if (!BaseReg) {
+ BaseReg = TmpReg;
+ } else {
+ assert (!IndexReg && "BaseReg/IndexReg already set!");
+ IndexReg = TmpReg;
+ Scale = 1;
+ }
+ }
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onRegister(unsigned Reg) {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_PLUS:
+ case IES_LPAREN:
+ State = IES_REGISTER;
+ TmpReg = Reg;
+ IC.pushOperand(IC_REGISTER);
+ break;
+ case IES_MULTIPLY:
+ // Index Register - Scale * Register
+ if (PrevState == IES_INTEGER) {
+ assert (!IndexReg && "IndexReg already set!");
+ State = IES_REGISTER;
+ IndexReg = Reg;
+ // Get the scale and replace the 'Scale * Register' with '0'.
+ Scale = IC.popOperand();
+ IC.pushOperand(IC_IMM);
+ IC.popOperator();
+ } else {
+ State = IES_ERROR;
+ }
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onIdentifierExpr(const MCExpr *SymRef, StringRef SymRefName) {
+ PrevState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_PLUS:
+ case IES_MINUS:
+ State = IES_INTEGER;
+ Sym = SymRef;
+ SymName = SymRefName;
+ IC.pushOperand(IC_IMM);
+ break;
+ }
+ }
+ bool onInteger(int64_t TmpInt, StringRef &ErrMsg) {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_PLUS:
+ case IES_MINUS:
+ case IES_OR:
+ case IES_AND:
+ case IES_LSHIFT:
+ case IES_RSHIFT:
+ case IES_DIVIDE:
+ case IES_MULTIPLY:
+ case IES_LPAREN:
+ State = IES_INTEGER;
+ if (PrevState == IES_REGISTER && CurrState == IES_MULTIPLY) {
+ // Index Register - Register * Scale
+ assert (!IndexReg && "IndexReg already set!");
+ IndexReg = TmpReg;
+ Scale = TmpInt;
+ if(Scale != 1 && Scale != 2 && Scale != 4 && Scale != 8) {
+ ErrMsg = "scale factor in address must be 1, 2, 4 or 8";
+ return true;
+ }
+ // Get the scale and replace the 'Register * Scale' with '0'.
+ IC.popOperator();
+ } else if ((PrevState == IES_PLUS || PrevState == IES_MINUS ||
+ PrevState == IES_OR || PrevState == IES_AND ||
+ PrevState == IES_LSHIFT || PrevState == IES_RSHIFT ||
+ PrevState == IES_MULTIPLY || PrevState == IES_DIVIDE ||
+ PrevState == IES_LPAREN || PrevState == IES_LBRAC) &&
+ CurrState == IES_MINUS) {
+ // Unary minus. No need to pop the minus operand because it was never
+ // pushed.
+ IC.pushOperand(IC_IMM, -TmpInt); // Push -Imm.
+ } else {
+ IC.pushOperand(IC_IMM, TmpInt);
+ }
+ break;
+ }
+ PrevState = CurrState;
+ return false;
+ }
+ void onStar() {
+ PrevState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_REGISTER:
+ case IES_RPAREN:
+ State = IES_MULTIPLY;
+ IC.pushOperator(IC_MULTIPLY);
+ break;
+ }
+ }
+ void onDivide() {
+ PrevState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_RPAREN:
+ State = IES_DIVIDE;
+ IC.pushOperator(IC_DIVIDE);
+ break;
+ }
+ }
+ void onLBrac() {
+ PrevState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_RBRAC:
+ State = IES_PLUS;
+ IC.pushOperator(IC_PLUS);
+ break;
+ }
+ }
+ void onRBrac() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_REGISTER:
+ case IES_RPAREN:
+ State = IES_RBRAC;
+ if (CurrState == IES_REGISTER && PrevState != IES_MULTIPLY) {
+ // If we already have a BaseReg, then assume this is the IndexReg with
+ // a scale of 1.
+ if (!BaseReg) {
+ BaseReg = TmpReg;
+ } else {
+ assert (!IndexReg && "BaseReg/IndexReg already set!");
+ IndexReg = TmpReg;
+ Scale = 1;
+ }
+ }
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onLParen() {
+ IntelExprState CurrState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_PLUS:
+ case IES_MINUS:
+ case IES_OR:
+ case IES_AND:
+ case IES_LSHIFT:
+ case IES_RSHIFT:
+ case IES_MULTIPLY:
+ case IES_DIVIDE:
+ case IES_LPAREN:
+ // FIXME: We don't handle this type of unary minus, yet.
+ if ((PrevState == IES_PLUS || PrevState == IES_MINUS ||
+ PrevState == IES_OR || PrevState == IES_AND ||
+ PrevState == IES_LSHIFT || PrevState == IES_RSHIFT ||
+ PrevState == IES_MULTIPLY || PrevState == IES_DIVIDE ||
+ PrevState == IES_LPAREN || PrevState == IES_LBRAC) &&
+ CurrState == IES_MINUS) {
+ State = IES_ERROR;
+ break;
+ }
+ State = IES_LPAREN;
+ IC.pushOperator(IC_LPAREN);
+ break;
+ }
+ PrevState = CurrState;
+ }
+ void onRParen() {
+ PrevState = State;
+ switch (State) {
+ default:
+ State = IES_ERROR;
+ break;
+ case IES_INTEGER:
+ case IES_REGISTER:
+ case IES_RPAREN:
+ State = IES_RPAREN;
+ IC.pushOperator(IC_RPAREN);
+ break;
+ }
+ }
+ };
+
MCAsmParser &getParser() const { return Parser; }
MCAsmLexer &getLexer() const { return Parser.getLexer(); }
bool Error(SMLoc L, const Twine &Msg,
- ArrayRef<SMRange> Ranges = ArrayRef<SMRange>(),
+ ArrayRef<SMRange> Ranges = None,
bool MatchingInlineAsm = false) {
if (MatchingInlineAsm) return true;
return Parser.Error(L, Msg, Ranges);
}
+ bool ErrorAndEatStatement(SMLoc L, const Twine &Msg,
+ ArrayRef<SMRange> Ranges = None,
+ bool MatchingInlineAsm = false) {
+ Parser.eatToEndOfStatement();
+ return Error(L, Msg, Ranges, MatchingInlineAsm);
+ }
+
X86Operand *ErrorOperand(SMLoc Loc, StringRef Msg) {
Error(Loc, Msg);
return 0;
}
+ X86Operand *DefaultMemSIOperand(SMLoc Loc);
+ X86Operand *DefaultMemDIOperand(SMLoc Loc);
X86Operand *ParseOperand();
X86Operand *ParseATTOperand();
X86Operand *ParseIntelOperand();
X86Operand *ParseIntelOffsetOfOperator();
+ bool ParseIntelDotOperator(const MCExpr *Disp, const MCExpr *&NewDisp);
X86Operand *ParseIntelOperator(unsigned OpKind);
- X86Operand *ParseIntelMemOperand(unsigned SegReg, uint64_t ImmDisp,
- SMLoc StartLoc);
- X86Operand *ParseIntelBracExpression(unsigned SegReg, SMLoc SizeDirLoc,
- uint64_t ImmDisp, unsigned Size);
- X86Operand *ParseIntelVarWithQualifier(const MCExpr *&Disp,
- StringRef &Identifier);
- X86Operand *ParseMemOperand(unsigned SegReg, SMLoc StartLoc);
+ X86Operand *ParseIntelSegmentOverride(unsigned SegReg, SMLoc Start, unsigned Size);
+ X86Operand *ParseIntelMemOperand(int64_t ImmDisp, SMLoc StartLoc,
+ unsigned Size);
+ bool ParseIntelExpression(IntelExprStateMachine &SM, SMLoc &End);
+ X86Operand *ParseIntelBracExpression(unsigned SegReg, SMLoc Start,
+ int64_t ImmDisp, unsigned Size);
+ bool ParseIntelIdentifier(const MCExpr *&Val, StringRef &Identifier,
+ InlineAsmIdentifierInfo &Info,
+ bool IsUnevaluatedOperand, SMLoc &End);
- X86Operand *CreateMemForInlineAsm(const MCExpr *Disp, SMLoc Start, SMLoc End,
- SMLoc SizeDirLoc, unsigned Size,
- StringRef SymName);
+ X86Operand *ParseMemOperand(unsigned SegReg, SMLoc StartLoc);
- bool ParseIntelDotOperator(const MCExpr *Disp, const MCExpr **NewDisp,
- SmallString<64> &Err);
+ X86Operand *CreateMemForInlineAsm(unsigned SegReg, const MCExpr *Disp,
+ unsigned BaseReg, unsigned IndexReg,
+ unsigned Scale, SMLoc Start, SMLoc End,
+ unsigned Size, StringRef Identifier,
+ InlineAsmIdentifierInfo &Info);
bool ParseDirectiveWord(unsigned Size, SMLoc L);
bool ParseDirectiveCode(StringRef IDVal, SMLoc L);
bool processInstruction(MCInst &Inst,
const SmallVectorImpl<MCParsedAsmOperand*> &Ops);
+ /// Wrapper around MCStreamer::EmitInstruction(). Possibly adds
+ /// instrumentation around Inst.
+ void EmitInstruction(MCInst &Inst,
+ SmallVectorImpl<MCParsedAsmOperand *> &Operands,
+ MCStreamer &Out);
+
bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
SmallVectorImpl<MCParsedAsmOperand*> &Operands,
MCStreamer &Out, unsigned &ErrorInfo,
- bool MatchingInlineAsm);
+ bool MatchingInlineAsm) override;
- /// isSrcOp - Returns true if operand is either (%rsi) or %ds:%(rsi)
- /// in 64bit mode or (%esi) or %es:(%esi) in 32bit mode.
- bool isSrcOp(X86Operand &Op);
+ /// doSrcDstMatch - Returns true if operands are matching in their
+ /// word size (%si and %di, %esi and %edi, etc.). Order depends on
+ /// the parsing mode (Intel vs. AT&T).
+ bool doSrcDstMatch(X86Operand &Op1, X86Operand &Op2);
- /// isDstOp - Returns true if operand is either (%rdi) or %es:(%rdi)
- /// in 64bit mode or (%edi) or %es:(%edi) in 32bit mode.
- bool isDstOp(X86Operand &Op);
+ /// Parses AVX512 specific operand primitives: masked registers ({%k<NUM>}, {z})
+ /// and memory broadcasting ({1to<NUM>}) primitives, updating Operands vector if required.
+ /// \return \c true if no parsing errors occurred, \c false otherwise.
+ bool HandleAVX512Operand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
+ const MCParsedAsmOperand &Op);
bool is64BitMode() const {
// FIXME: Can tablegen auto-generate this?
return (STI.getFeatureBits() & X86::Mode64Bit) != 0;
}
- void SwitchMode() {
- unsigned FB = ComputeAvailableFeatures(STI.ToggleFeature(X86::Mode64Bit));
+ bool is32BitMode() const {
+ // FIXME: Can tablegen auto-generate this?
+ return (STI.getFeatureBits() & X86::Mode32Bit) != 0;
+ }
+ bool is16BitMode() const {
+ // FIXME: Can tablegen auto-generate this?
+ return (STI.getFeatureBits() & X86::Mode16Bit) != 0;
+ }
+ void SwitchMode(uint64_t mode) {
+ uint64_t oldMode = STI.getFeatureBits() &
+ (X86::Mode64Bit | X86::Mode32Bit | X86::Mode16Bit);
+ unsigned FB = ComputeAvailableFeatures(STI.ToggleFeature(oldMode | mode));
setAvailableFeatures(FB);
+ assert(mode == (STI.getFeatureBits() &
+ (X86::Mode64Bit | X86::Mode32Bit | X86::Mode16Bit)));
+ }
+
+ bool isParsingIntelSyntax() {
+ return getParser().getAssemblerDialect();
}
/// @name Auto-generated Matcher Functions
/// }
public:
- X86AsmParser(MCSubtargetInfo &sti, MCAsmParser &parser)
- : MCTargetAsmParser(), STI(sti), Parser(parser), InstInfo(0) {
+ X86AsmParser(MCSubtargetInfo &sti, MCAsmParser &parser,
+ const MCInstrInfo &MII,
+ const MCTargetOptions &Options)
+ : MCTargetAsmParser(), STI(sti), Parser(parser), InstInfo(0) {
// Initialize the set of available features.
setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
+ Instrumentation.reset(
+ CreateX86AsmInstrumentation(Options, Parser.getContext(), STI));
}
- virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc);
- virtual bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
- SMLoc NameLoc,
- SmallVectorImpl<MCParsedAsmOperand*> &Operands);
+ bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) override;
- virtual bool ParseDirective(AsmToken DirectiveID);
+ bool
+ ParseInstruction(ParseInstructionInfo &Info, StringRef Name, SMLoc NameLoc,
+ SmallVectorImpl<MCParsedAsmOperand*> &Operands) override;
- bool isParsingIntelSyntax() {
- return getParser().getAssemblerDialect();
- }
+ bool ParseDirective(AsmToken DirectiveID) override;
};
} // end anonymous namespace
/// }
-static bool isImmSExti16i8Value(uint64_t Value) {
- return (( Value <= 0x000000000000007FULL)||
- (0x000000000000FF80ULL <= Value && Value <= 0x000000000000FFFFULL)||
- (0xFFFFFFFFFFFFFF80ULL <= Value && Value <= 0xFFFFFFFFFFFFFFFFULL));
-}
-
-static bool isImmSExti32i8Value(uint64_t Value) {
- return (( Value <= 0x000000000000007FULL)||
- (0x00000000FFFFFF80ULL <= Value && Value <= 0x00000000FFFFFFFFULL)||
- (0xFFFFFFFFFFFFFF80ULL <= Value && Value <= 0xFFFFFFFFFFFFFFFFULL));
-}
-
-static bool isImmZExtu32u8Value(uint64_t Value) {
- return (Value <= 0x00000000000000FFULL);
-}
-
-static bool isImmSExti64i8Value(uint64_t Value) {
- return (( Value <= 0x000000000000007FULL)||
- (0xFFFFFFFFFFFFFF80ULL <= Value && Value <= 0xFFFFFFFFFFFFFFFFULL));
-}
-
-static bool isImmSExti64i32Value(uint64_t Value) {
- return (( Value <= 0x000000007FFFFFFFULL)||
- (0xFFFFFFFF80000000ULL <= Value && Value <= 0xFFFFFFFFFFFFFFFFULL));
-}
-namespace {
-
-/// X86Operand - Instances of this class represent a parsed X86 machine
-/// instruction.
-struct X86Operand : public MCParsedAsmOperand {
- enum KindTy {
- Token,
- Register,
- Immediate,
- Memory
- } Kind;
-
- SMLoc StartLoc, EndLoc;
- SMLoc OffsetOfLoc;
- StringRef SymName;
- bool AddressOf;
-
- struct TokOp {
- const char *Data;
- unsigned Length;
- };
-
- struct RegOp {
- unsigned RegNo;
- };
-
- struct ImmOp {
- const MCExpr *Val;
- };
-
- struct MemOp {
- unsigned SegReg;
- const MCExpr *Disp;
- unsigned BaseReg;
- unsigned IndexReg;
- unsigned Scale;
- unsigned Size;
- };
-
- union {
- struct TokOp Tok;
- struct RegOp Reg;
- struct ImmOp Imm;
- struct MemOp Mem;
- };
-
- X86Operand(KindTy K, SMLoc Start, SMLoc End)
- : Kind(K), StartLoc(Start), EndLoc(End) {}
-
- StringRef getSymName() { return SymName; }
-
- /// 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.
- SMLoc getEndLoc() const { return EndLoc; }
- /// getLocRange - Get the range between the first and last token of this
- /// operand.
- SMRange getLocRange() const { return SMRange(StartLoc, EndLoc); }
- /// getOffsetOfLoc - Get the location of the offset operator.
- SMLoc getOffsetOfLoc() const { return OffsetOfLoc; }
-
- virtual void print(raw_ostream &OS) const {}
-
- StringRef getToken() const {
- assert(Kind == Token && "Invalid access!");
- return StringRef(Tok.Data, Tok.Length);
- }
- void setTokenValue(StringRef Value) {
- assert(Kind == Token && "Invalid access!");
- Tok.Data = Value.data();
- Tok.Length = Value.size();
- }
-
- unsigned getReg() const {
- assert(Kind == Register && "Invalid access!");
- return Reg.RegNo;
- }
-
- const MCExpr *getImm() const {
- assert(Kind == Immediate && "Invalid access!");
- return Imm.Val;
- }
-
- const MCExpr *getMemDisp() const {
- assert(Kind == Memory && "Invalid access!");
- return Mem.Disp;
- }
- unsigned getMemSegReg() const {
- assert(Kind == Memory && "Invalid access!");
- return Mem.SegReg;
- }
- unsigned getMemBaseReg() const {
- assert(Kind == Memory && "Invalid access!");
- return Mem.BaseReg;
- }
- unsigned getMemIndexReg() const {
- assert(Kind == Memory && "Invalid access!");
- return Mem.IndexReg;
- }
- unsigned getMemScale() const {
- assert(Kind == Memory && "Invalid access!");
- return Mem.Scale;
- }
-
- bool isToken() const {return Kind == Token; }
-
- bool isImm() const { return Kind == Immediate; }
-
- bool isImmSExti16i8() const {
- if (!isImm())
- return false;
-
- // If this isn't a constant expr, just assume it fits and let relaxation
- // handle it.
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- if (!CE)
- return true;
-
- // Otherwise, check the value is in a range that makes sense for this
- // extension.
- return isImmSExti16i8Value(CE->getValue());
- }
- bool isImmSExti32i8() const {
- if (!isImm())
- return false;
-
- // If this isn't a constant expr, just assume it fits and let relaxation
- // handle it.
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- if (!CE)
- return true;
-
- // Otherwise, check the value is in a range that makes sense for this
- // extension.
- return isImmSExti32i8Value(CE->getValue());
- }
- bool isImmZExtu32u8() const {
- if (!isImm())
- return false;
-
- // If this isn't a constant expr, just assume it fits and let relaxation
- // handle it.
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- if (!CE)
- return true;
-
- // Otherwise, check the value is in a range that makes sense for this
- // extension.
- return isImmZExtu32u8Value(CE->getValue());
- }
- bool isImmSExti64i8() const {
- if (!isImm())
- return false;
-
- // If this isn't a constant expr, just assume it fits and let relaxation
- // handle it.
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- if (!CE)
+static bool CheckBaseRegAndIndexReg(unsigned BaseReg, unsigned IndexReg,
+ StringRef &ErrMsg) {
+ // If we have both a base register and an index register make sure they are
+ // both 64-bit or 32-bit registers.
+ // To support VSIB, IndexReg can be 128-bit or 256-bit registers.
+ if (BaseReg != 0 && IndexReg != 0) {
+ if (X86MCRegisterClasses[X86::GR64RegClassID].contains(BaseReg) &&
+ (X86MCRegisterClasses[X86::GR16RegClassID].contains(IndexReg) ||
+ X86MCRegisterClasses[X86::GR32RegClassID].contains(IndexReg)) &&
+ IndexReg != X86::RIZ) {
+ ErrMsg = "base register is 64-bit, but index register is not";
return true;
-
- // Otherwise, check the value is in a range that makes sense for this
- // extension.
- return isImmSExti64i8Value(CE->getValue());
- }
- bool isImmSExti64i32() const {
- if (!isImm())
- return false;
-
- // If this isn't a constant expr, just assume it fits and let relaxation
- // handle it.
- const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm());
- if (!CE)
+ }
+ if (X86MCRegisterClasses[X86::GR32RegClassID].contains(BaseReg) &&
+ (X86MCRegisterClasses[X86::GR16RegClassID].contains(IndexReg) ||
+ X86MCRegisterClasses[X86::GR64RegClassID].contains(IndexReg)) &&
+ IndexReg != X86::EIZ){
+ ErrMsg = "base register is 32-bit, but index register is not";
return true;
-
- // Otherwise, check the value is in a range that makes sense for this
- // extension.
- return isImmSExti64i32Value(CE->getValue());
- }
-
- bool isOffsetOf() const {
- return OffsetOfLoc.getPointer();
- }
-
- bool needAddressOf() const {
- return AddressOf;
- }
-
- bool isMem() const { return Kind == Memory; }
- bool isMem8() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 8);
- }
- bool isMem16() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 16);
- }
- bool isMem32() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 32);
- }
- bool isMem64() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 64);
- }
- bool isMem80() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 80);
- }
- bool isMem128() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 128);
- }
- bool isMem256() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 256);
- }
-
- bool isMemVX32() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 32) &&
- getMemIndexReg() >= X86::XMM0 && getMemIndexReg() <= X86::XMM15;
- }
- bool isMemVY32() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 32) &&
- getMemIndexReg() >= X86::YMM0 && getMemIndexReg() <= X86::YMM15;
- }
- bool isMemVX64() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 64) &&
- getMemIndexReg() >= X86::XMM0 && getMemIndexReg() <= X86::XMM15;
- }
- bool isMemVY64() const {
- return Kind == Memory && (!Mem.Size || Mem.Size == 64) &&
- getMemIndexReg() >= X86::YMM0 && getMemIndexReg() <= X86::YMM15;
- }
-
- bool isAbsMem() const {
- return Kind == Memory && !getMemSegReg() && !getMemBaseReg() &&
- !getMemIndexReg() && getMemScale() == 1;
- }
-
- bool isReg() const { return Kind == Register; }
-
- void addExpr(MCInst &Inst, const MCExpr *Expr) const {
- // Add as immediates when possible.
- if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
- Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
- else
- Inst.addOperand(MCOperand::CreateExpr(Expr));
- }
-
- void addRegOperands(MCInst &Inst, unsigned N) const {
- assert(N == 1 && "Invalid number of operands!");
- Inst.addOperand(MCOperand::CreateReg(getReg()));
- }
-
- void addImmOperands(MCInst &Inst, unsigned N) const {
- assert(N == 1 && "Invalid number of operands!");
- addExpr(Inst, getImm());
- }
-
- void addMem8Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMem16Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMem32Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMem64Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMem80Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMem128Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMem256Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMemVX32Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMemVY32Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMemVX64Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
- void addMemVY64Operands(MCInst &Inst, unsigned N) const {
- addMemOperands(Inst, N);
- }
-
- void addMemOperands(MCInst &Inst, unsigned N) const {
- assert((N == 5) && "Invalid number of operands!");
- Inst.addOperand(MCOperand::CreateReg(getMemBaseReg()));
- Inst.addOperand(MCOperand::CreateImm(getMemScale()));
- Inst.addOperand(MCOperand::CreateReg(getMemIndexReg()));
- addExpr(Inst, getMemDisp());
- Inst.addOperand(MCOperand::CreateReg(getMemSegReg()));
- }
-
- void addAbsMemOperands(MCInst &Inst, unsigned N) const {
- assert((N == 1) && "Invalid number of operands!");
- // Add as immediates when possible.
- if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getMemDisp()))
- Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
- else
- Inst.addOperand(MCOperand::CreateExpr(getMemDisp()));
- }
-
- static X86Operand *CreateToken(StringRef Str, SMLoc Loc) {
- SMLoc EndLoc = SMLoc::getFromPointer(Loc.getPointer() + Str.size());
- X86Operand *Res = new X86Operand(Token, Loc, EndLoc);
- Res->Tok.Data = Str.data();
- Res->Tok.Length = Str.size();
- return Res;
- }
-
- static X86Operand *CreateReg(unsigned RegNo, SMLoc StartLoc, SMLoc EndLoc,
- bool AddressOf = false,
- SMLoc OffsetOfLoc = SMLoc(),
- StringRef SymName = StringRef()) {
- X86Operand *Res = new X86Operand(Register, StartLoc, EndLoc);
- Res->Reg.RegNo = RegNo;
- Res->AddressOf = AddressOf;
- Res->OffsetOfLoc = OffsetOfLoc;
- Res->SymName = SymName;
- return Res;
- }
-
- static X86Operand *CreateImm(const MCExpr *Val, SMLoc StartLoc, SMLoc EndLoc){
- X86Operand *Res = new X86Operand(Immediate, StartLoc, EndLoc);
- Res->Imm.Val = Val;
- return Res;
- }
-
- /// Create an absolute memory operand.
- static X86Operand *CreateMem(const MCExpr *Disp, SMLoc StartLoc, SMLoc EndLoc,
- unsigned Size = 0,
- StringRef SymName = StringRef()) {
- X86Operand *Res = new X86Operand(Memory, StartLoc, EndLoc);
- Res->Mem.SegReg = 0;
- Res->Mem.Disp = Disp;
- Res->Mem.BaseReg = 0;
- Res->Mem.IndexReg = 0;
- Res->Mem.Scale = 1;
- Res->Mem.Size = Size;
- Res->SymName = SymName;
- Res->AddressOf = false;
- return Res;
- }
-
- /// Create a generalized memory operand.
- static X86Operand *CreateMem(unsigned SegReg, const MCExpr *Disp,
- unsigned BaseReg, unsigned IndexReg,
- unsigned Scale, SMLoc StartLoc, SMLoc EndLoc,
- unsigned Size = 0,
- StringRef SymName = StringRef()) {
- // We should never just have a displacement, that should be parsed as an
- // absolute memory operand.
- assert((SegReg || BaseReg || IndexReg) && "Invalid memory operand!");
-
- // The scale should always be one of {1,2,4,8}.
- assert(((Scale == 1 || Scale == 2 || Scale == 4 || Scale == 8)) &&
- "Invalid scale!");
- X86Operand *Res = new X86Operand(Memory, StartLoc, EndLoc);
- Res->Mem.SegReg = SegReg;
- Res->Mem.Disp = Disp;
- Res->Mem.BaseReg = BaseReg;
- Res->Mem.IndexReg = IndexReg;
- Res->Mem.Scale = Scale;
- Res->Mem.Size = Size;
- Res->SymName = SymName;
- Res->AddressOf = false;
- return Res;
+ }
+ if (X86MCRegisterClasses[X86::GR16RegClassID].contains(BaseReg)) {
+ if (X86MCRegisterClasses[X86::GR32RegClassID].contains(IndexReg) ||
+ X86MCRegisterClasses[X86::GR64RegClassID].contains(IndexReg)) {
+ ErrMsg = "base register is 16-bit, but index register is not";
+ return true;
+ }
+ if (((BaseReg == X86::BX || BaseReg == X86::BP) &&
+ IndexReg != X86::SI && IndexReg != X86::DI) ||
+ ((BaseReg == X86::SI || BaseReg == X86::DI) &&
+ IndexReg != X86::BX && IndexReg != X86::BP)) {
+ ErrMsg = "invalid 16-bit base/index register combination";
+ return true;
+ }
+ }
}
-};
-
-} // end anonymous namespace.
-
-bool X86AsmParser::isSrcOp(X86Operand &Op) {
- unsigned basereg = is64BitMode() ? X86::RSI : X86::ESI;
-
- return (Op.isMem() &&
- (Op.Mem.SegReg == 0 || Op.Mem.SegReg == X86::DS) &&
- isa<MCConstantExpr>(Op.Mem.Disp) &&
- cast<MCConstantExpr>(Op.Mem.Disp)->getValue() == 0 &&
- Op.Mem.BaseReg == basereg && Op.Mem.IndexReg == 0);
+ return false;
}
-bool X86AsmParser::isDstOp(X86Operand &Op) {
- unsigned basereg = is64BitMode() ? X86::RDI : X86::EDI;
+bool X86AsmParser::doSrcDstMatch(X86Operand &Op1, X86Operand &Op2)
+{
+ // Return true and let a normal complaint about bogus operands happen.
+ if (!Op1.isMem() || !Op2.isMem())
+ return true;
- return Op.isMem() &&
- (Op.Mem.SegReg == 0 || Op.Mem.SegReg == X86::ES) &&
- isa<MCConstantExpr>(Op.Mem.Disp) &&
- cast<MCConstantExpr>(Op.Mem.Disp)->getValue() == 0 &&
- Op.Mem.BaseReg == basereg && Op.Mem.IndexReg == 0;
+ // Actually these might be the other way round if Intel syntax is
+ // being used. It doesn't matter.
+ unsigned diReg = Op1.Mem.BaseReg;
+ unsigned siReg = Op2.Mem.BaseReg;
+
+ if (X86MCRegisterClasses[X86::GR16RegClassID].contains(siReg))
+ return X86MCRegisterClasses[X86::GR16RegClassID].contains(diReg);
+ if (X86MCRegisterClasses[X86::GR32RegClassID].contains(siReg))
+ return X86MCRegisterClasses[X86::GR32RegClassID].contains(diReg);
+ if (X86MCRegisterClasses[X86::GR64RegClassID].contains(siReg))
+ return X86MCRegisterClasses[X86::GR64RegClassID].contains(diReg);
+ // Again, return true and let another error happen.
+ return true;
}
bool X86AsmParser::ParseRegister(unsigned &RegNo,
RegNo = MatchRegisterName(Tok.getString().lower());
if (!is64BitMode()) {
- // FIXME: This should be done using Requires<In32BitMode> and
+ // FIXME: This should be done using Requires<Not64BitMode> and
// Requires<In64BitMode> so "eiz" usage in 64-bit instructions can be also
// checked.
// FIXME: Check AH, CH, DH, BH cannot be used in an instruction requiring a
return false;
}
+X86Operand *X86AsmParser::DefaultMemSIOperand(SMLoc Loc) {
+ unsigned basereg =
+ is64BitMode() ? X86::RSI : (is32BitMode() ? X86::ESI : X86::SI);
+ const MCExpr *Disp = MCConstantExpr::Create(0, getContext());
+ return X86Operand::CreateMem(/*SegReg=*/0, Disp, /*BaseReg=*/basereg,
+ /*IndexReg=*/0, /*Scale=*/1, Loc, Loc, 0);
+}
+
+X86Operand *X86AsmParser::DefaultMemDIOperand(SMLoc Loc) {
+ unsigned basereg =
+ is64BitMode() ? X86::RDI : (is32BitMode() ? X86::EDI : X86::DI);
+ const MCExpr *Disp = MCConstantExpr::Create(0, getContext());
+ return X86Operand::CreateMem(/*SegReg=*/0, Disp, /*BaseReg=*/basereg,
+ /*IndexReg=*/0, /*Scale=*/1, Loc, Loc, 0);
+}
+
X86Operand *X86AsmParser::ParseOperand() {
if (isParsingIntelSyntax())
return ParseIntelOperand();
.Cases("BYTE", "byte", 8)
.Cases("WORD", "word", 16)
.Cases("DWORD", "dword", 32)
- .Cases("QWORD", "qword", 64)
- .Cases("XWORD", "xword", 80)
- .Cases("XMMWORD", "xmmword", 128)
- .Cases("YMMWORD", "ymmword", 256)
- .Default(0);
- return Size;
-}
-
-enum InfixCalculatorTok {
- IC_PLUS = 0,
- IC_MINUS,
- IC_MULTIPLY,
- IC_DIVIDE,
- IC_RPAREN,
- IC_LPAREN,
- IC_IMM,
- IC_REGISTER
-};
-static const char OpPrecedence[] = {
- 0, // IC_PLUS
- 0, // IC_MINUS
- 1, // IC_MULTIPLY
- 1, // IC_DIVIDE
- 2, // IC_RPAREN
- 3, // IC_LPAREN
- 0, // IC_IMM
- 0 // IC_REGISTER
-};
-
-class InfixCalculator {
- typedef std::pair< InfixCalculatorTok, int64_t > ICToken;
- SmallVector<InfixCalculatorTok, 4> InfixOperatorStack;
- SmallVector<ICToken, 4> PostfixStack;
-
-public:
- int64_t popOperand() {
- assert (!PostfixStack.empty() && "Poped an empty stack!");
- ICToken Op = PostfixStack.pop_back_val();
- assert ((Op.first == IC_IMM || Op.first == IC_REGISTER)
- && "Expected and immediate or register!");
- return Op.second;
- }
- void pushOperand(InfixCalculatorTok Op, int64_t Val = 0) {
- assert ((Op == IC_IMM || Op == IC_REGISTER) &&
- "Unexpected operand!");
- PostfixStack.push_back(std::make_pair(Op, Val));
- }
-
- void popOperator() { InfixOperatorStack.pop_back_val(); }
- void pushOperator(InfixCalculatorTok Op) {
- // Push the new operator if the stack is empty.
- if (InfixOperatorStack.empty()) {
- InfixOperatorStack.push_back(Op);
- return;
- }
-
- // Push the new operator if it has a higher precedence than the operator on
- // the top of the stack or the operator on the top of the stack is a left
- // parentheses.
- unsigned Idx = InfixOperatorStack.size() - 1;
- InfixCalculatorTok StackOp = InfixOperatorStack[Idx];
- if (OpPrecedence[Op] > OpPrecedence[StackOp] || StackOp == IC_LPAREN) {
- InfixOperatorStack.push_back(Op);
- return;
- }
-
- // The operator on the top of the stack has higher precedence than the
- // new operator.
- unsigned ParenCount = 0;
- while (1) {
- // Nothing to process.
- if (InfixOperatorStack.empty())
- break;
-
- Idx = InfixOperatorStack.size() - 1;
- StackOp = InfixOperatorStack[Idx];
- if (!(OpPrecedence[StackOp] >= OpPrecedence[Op] || ParenCount))
- break;
-
- // If we have an even parentheses count and we see a left parentheses,
- // then stop processing.
- if (!ParenCount && StackOp == IC_LPAREN)
- break;
-
- if (StackOp == IC_RPAREN) {
- ++ParenCount;
- InfixOperatorStack.pop_back_val();
- } else if (StackOp == IC_LPAREN) {
- --ParenCount;
- InfixOperatorStack.pop_back_val();
- } else {
- InfixOperatorStack.pop_back_val();
- PostfixStack.push_back(std::make_pair(StackOp, 0));
- }
- }
- // Push the new operator.
- InfixOperatorStack.push_back(Op);
- }
- int64_t execute() {
- // Push any remaining operators onto the postfix stack.
- while (!InfixOperatorStack.empty()) {
- InfixCalculatorTok StackOp = InfixOperatorStack.pop_back_val();
- if (StackOp != IC_LPAREN && StackOp != IC_RPAREN)
- PostfixStack.push_back(std::make_pair(StackOp, 0));
- }
-
- if (PostfixStack.empty())
- return 0;
-
- SmallVector<ICToken, 16> OperandStack;
- for (unsigned i = 0, e = PostfixStack.size(); i != e; ++i) {
- ICToken Op = PostfixStack[i];
- if (Op.first == IC_IMM || Op.first == IC_REGISTER) {
- OperandStack.push_back(Op);
- } else {
- assert (OperandStack.size() > 1 && "Too few operands.");
- int64_t Val;
- ICToken Op2 = OperandStack.pop_back_val();
- ICToken Op1 = OperandStack.pop_back_val();
- switch (Op.first) {
- default:
- report_fatal_error("Unexpected operator!");
- break;
- case IC_PLUS:
- Val = Op1.second + Op2.second;
- OperandStack.push_back(std::make_pair(IC_IMM, Val));
- break;
- case IC_MINUS:
- Val = Op1.second - Op2.second;
- OperandStack.push_back(std::make_pair(IC_IMM, Val));
- break;
- case IC_MULTIPLY:
- assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
- "Multiply operation with an immediate and a register!");
- Val = Op1.second * Op2.second;
- OperandStack.push_back(std::make_pair(IC_IMM, Val));
- break;
- case IC_DIVIDE:
- assert (Op1.first == IC_IMM && Op2.first == IC_IMM &&
- "Divide operation with an immediate and a register!");
- assert (Op2.second != 0 && "Division by zero!");
- Val = Op1.second / Op2.second;
- OperandStack.push_back(std::make_pair(IC_IMM, Val));
- break;
- }
- }
- }
- assert (OperandStack.size() == 1 && "Expected a single result.");
- return OperandStack.pop_back_val().second;
- }
-};
-
-enum IntelBracExprState {
- IBES_PLUS,
- IBES_MINUS,
- IBES_MULTIPLY,
- IBES_DIVIDE,
- IBES_LBRAC,
- IBES_RBRAC,
- IBES_LPAREN,
- IBES_RPAREN,
- IBES_REGISTER,
- IBES_REGISTER_STAR,
- IBES_INTEGER,
- IBES_INTEGER_STAR,
- IBES_IDENTIFIER,
- IBES_ERROR
-};
-
-class IntelBracExprStateMachine {
- IntelBracExprState State;
- unsigned BaseReg, IndexReg, TmpReg, Scale;
- int64_t Disp;
- InfixCalculator IC;
-public:
- IntelBracExprStateMachine(MCAsmParser &parser, int64_t disp) :
- State(IBES_PLUS), BaseReg(0), IndexReg(0), TmpReg(0), Scale(1), Disp(disp){}
-
- unsigned getBaseReg() { return BaseReg; }
- unsigned getIndexReg() { return IndexReg; }
- unsigned getScale() { return Scale; }
- int64_t getDisp() { return Disp + IC.execute(); }
- bool isValidEndState() { return State == IBES_RBRAC; }
-
- void onPlus() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_INTEGER:
- case IBES_RPAREN:
- State = IBES_PLUS;
- IC.pushOperator(IC_PLUS);
- break;
- case IBES_REGISTER:
- State = IBES_PLUS;
- // If we already have a BaseReg, then assume this is the IndexReg with a
- // scale of 1.
- if (!BaseReg) {
- BaseReg = TmpReg;
- } else {
- assert (!IndexReg && "BaseReg/IndexReg already set!");
- IndexReg = TmpReg;
- Scale = 1;
- }
- IC.pushOperator(IC_PLUS);
- break;
- }
- }
- void onMinus() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_PLUS:
- case IBES_LPAREN:
- IC.pushOperand(IC_IMM);
- case IBES_INTEGER:
- case IBES_RPAREN:
- State = IBES_MINUS;
- IC.pushOperator(IC_MINUS);
- break;
- case IBES_REGISTER:
- State = IBES_MINUS;
- // If we already have a BaseReg, then assume this is the IndexReg with a
- // scale of 1.
- if (!BaseReg) {
- BaseReg = TmpReg;
- } else {
- assert (!IndexReg && "BaseReg/IndexReg already set!");
- IndexReg = TmpReg;
- Scale = 1;
- }
- IC.pushOperator(IC_MINUS);
- break;
- }
- }
- void onRegister(unsigned Reg) {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_PLUS:
- case IBES_LPAREN:
- State = IBES_REGISTER;
- TmpReg = Reg;
- IC.pushOperand(IC_REGISTER);
- break;
- case IBES_INTEGER_STAR:
- assert (!IndexReg && "IndexReg already set!");
- State = IBES_INTEGER;
- IndexReg = Reg;
- Scale = IC.popOperand();
- IC.pushOperand(IC_IMM);
- IC.popOperator();
- break;
- }
- }
- void onDispExpr() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_PLUS:
- case IBES_MINUS:
- State = IBES_INTEGER;
- IC.pushOperand(IC_IMM);
- break;
- }
- }
- void onInteger(int64_t TmpInt) {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_PLUS:
- case IBES_MINUS:
- case IBES_MULTIPLY:
- case IBES_DIVIDE:
- case IBES_LPAREN:
- case IBES_INTEGER_STAR:
- State = IBES_INTEGER;
- IC.pushOperand(IC_IMM, TmpInt);
- break;
- case IBES_REGISTER_STAR:
- assert (!IndexReg && "IndexReg already set!");
- State = IBES_INTEGER;
- IndexReg = TmpReg;
- Scale = TmpInt;
- IC.popOperator();
- break;
- }
- }
- void onStar() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_INTEGER:
- State = IBES_INTEGER_STAR;
- IC.pushOperator(IC_MULTIPLY);
- break;
- case IBES_REGISTER:
- State = IBES_REGISTER_STAR;
- IC.pushOperator(IC_MULTIPLY);
- break;
- case IBES_RPAREN:
- State = IBES_MULTIPLY;
- IC.pushOperator(IC_MULTIPLY);
- break;
- }
- }
- void onDivide() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_INTEGER:
- State = IBES_DIVIDE;
- IC.pushOperator(IC_DIVIDE);
- break;
- }
- }
- void onLBrac() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_RBRAC:
- State = IBES_PLUS;
- IC.pushOperator(IC_PLUS);
- break;
- }
- }
- void onRBrac() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_RPAREN:
- case IBES_INTEGER:
- State = IBES_RBRAC;
- break;
- case IBES_REGISTER:
- State = IBES_RBRAC;
- // If we already have a BaseReg, then assume this is the IndexReg with a
- // scale of 1.
- if (!BaseReg) {
- BaseReg = TmpReg;
- } else {
- assert (!IndexReg && "BaseReg/IndexReg already set!");
- IndexReg = TmpReg;
- Scale = 1;
- }
- break;
- }
- }
- void onLParen() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_PLUS:
- case IBES_MINUS:
- case IBES_MULTIPLY:
- case IBES_DIVIDE:
- case IBES_INTEGER_STAR:
- case IBES_LPAREN:
- State = IBES_LPAREN;
- IC.pushOperator(IC_LPAREN);
- break;
- }
- }
- void onRParen() {
- switch (State) {
- default:
- State = IBES_ERROR;
- break;
- case IBES_REGISTER:
- case IBES_INTEGER:
- case IBES_PLUS:
- case IBES_MINUS:
- case IBES_MULTIPLY:
- case IBES_DIVIDE:
- case IBES_RPAREN:
- State = IBES_RPAREN;
- IC.pushOperator(IC_RPAREN);
- break;
- }
- }
-};
-
-X86Operand *X86AsmParser::CreateMemForInlineAsm(const MCExpr *Disp, SMLoc Start,
- SMLoc End, SMLoc SizeDirLoc,
- unsigned Size, StringRef SymName) {
- bool NeedSizeDir = false;
- bool IsVarDecl = false;
-
- if (const MCSymbolRefExpr *SymRef = dyn_cast<MCSymbolRefExpr>(Disp)) {
- const MCSymbol &Sym = SymRef->getSymbol();
- // FIXME: The SemaLookup will fail if the name is anything other then an
- // identifier.
- // FIXME: Pass a valid SMLoc.
- unsigned tLength, tSize, tType;
- SemaCallback->LookupInlineAsmIdentifier(Sym.getName(), NULL, tLength, tSize,
- tType, IsVarDecl);
- if (!Size) {
- Size = tType * 8; // Size is in terms of bits in this context.
- NeedSizeDir = Size > 0;
- }
- }
+ .Cases("QWORD", "qword", 64)
+ .Cases("XWORD", "xword", 80)
+ .Cases("XMMWORD", "xmmword", 128)
+ .Cases("YMMWORD", "ymmword", 256)
+ .Cases("ZMMWORD", "zmmword", 512)
+ .Cases("OPAQUE", "opaque", -1U) // needs to be non-zero, but doesn't matter
+ .Default(0);
+ return Size;
+}
+X86Operand *
+X86AsmParser::CreateMemForInlineAsm(unsigned SegReg, const MCExpr *Disp,
+ unsigned BaseReg, unsigned IndexReg,
+ unsigned Scale, SMLoc Start, SMLoc End,
+ unsigned Size, StringRef Identifier,
+ InlineAsmIdentifierInfo &Info){
// If this is not a VarDecl then assume it is a FuncDecl or some other label
// reference. We need an 'r' constraint here, so we need to create register
// operand to ensure proper matching. Just pick a GPR based on the size of
// a pointer.
- if (!IsVarDecl) {
- unsigned RegNo = is64BitMode() ? X86::RBX : X86::EBX;
- return X86Operand::CreateReg(RegNo, Start, End, /*AddressOf=*/true, SMLoc(),
- SymName);
+ if (isa<MCSymbolRefExpr>(Disp) && !Info.IsVarDecl) {
+ unsigned RegNo =
+ is64BitMode() ? X86::RBX : (is32BitMode() ? X86::EBX : X86::BX);
+ return X86Operand::CreateReg(RegNo, Start, End, /*AddressOf=*/true,
+ SMLoc(), Identifier, Info.OpDecl);
+ }
+
+ // We either have a direct symbol reference, or an offset from a symbol. The
+ // parser always puts the symbol on the LHS, so look there for size
+ // calculation purposes.
+ const MCBinaryExpr *BinOp = dyn_cast<MCBinaryExpr>(Disp);
+ bool IsSymRef =
+ isa<MCSymbolRefExpr>(BinOp ? BinOp->getLHS() : Disp);
+ if (IsSymRef) {
+ if (!Size) {
+ Size = Info.Type * 8; // Size is in terms of bits in this context.
+ if (Size)
+ InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_SizeDirective, Start,
+ /*Len=*/0, Size));
+ }
}
- if (NeedSizeDir)
- InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_SizeDirective, SizeDirLoc,
- /*Len*/0, Size));
-
// When parsing inline assembly we set the base register to a non-zero value
- // as we don't know the actual value at this time. This is necessary to
+ // if we don't know the actual value at this time. This is necessary to
// get the matching correct in some cases.
- return X86Operand::CreateMem(/*SegReg*/0, Disp, /*BaseReg*/1, /*IndexReg*/0,
- /*Scale*/1, Start, End, Size, SymName);
+ BaseReg = BaseReg ? BaseReg : 1;
+ return X86Operand::CreateMem(SegReg, Disp, BaseReg, IndexReg, Scale, Start,
+ End, Size, Identifier, Info.OpDecl);
}
-X86Operand *X86AsmParser::ParseIntelBracExpression(unsigned SegReg,
- SMLoc SizeDirLoc,
- uint64_t ImmDisp,
- unsigned Size) {
- const AsmToken &Tok = Parser.getTok();
- SMLoc Start = Tok.getLoc(), End = Tok.getEndLoc();
-
- // Eat '['
- if (getLexer().isNot(AsmToken::LBrac))
- return ErrorOperand(Start, "Expected '[' token!");
- Parser.Lex();
-
- unsigned TmpReg = 0;
-
- // Try to handle '[' 'Symbol' ']'
- if (getLexer().is(AsmToken::Identifier)) {
- SMLoc Loc = Tok.getLoc();
- if (ParseRegister(TmpReg, Loc, End)) {
- const MCExpr *Disp;
- StringRef Identifier = Tok.getString();
- if (getParser().parseExpression(Disp, End))
- return 0;
-
- if (X86Operand *Err = ParseIntelVarWithQualifier(Disp, Identifier))
- return Err;
-
- if (getLexer().isNot(AsmToken::RBrac))
- return ErrorOperand(Tok.getLoc(), "Expected ']' token!");
-
- if (isParsingInlineAsm()) {
- // Remove the '[' and ']' from the IR string.
- InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, Start, 1));
- InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, Tok.getLoc(), 1));
+static void
+RewriteIntelBracExpression(SmallVectorImpl<AsmRewrite> *AsmRewrites,
+ StringRef SymName, int64_t ImmDisp,
+ int64_t FinalImmDisp, SMLoc &BracLoc,
+ SMLoc &StartInBrac, SMLoc &End) {
+ // Remove the '[' and ']' from the IR string.
+ AsmRewrites->push_back(AsmRewrite(AOK_Skip, BracLoc, 1));
+ AsmRewrites->push_back(AsmRewrite(AOK_Skip, End, 1));
+
+ // If ImmDisp is non-zero, then we parsed a displacement before the
+ // bracketed expression (i.e., ImmDisp [ BaseReg + Scale*IndexReg + Disp])
+ // If ImmDisp doesn't match the displacement computed by the state machine
+ // then we have an additional displacement in the bracketed expression.
+ if (ImmDisp != FinalImmDisp) {
+ if (ImmDisp) {
+ // We have an immediate displacement before the bracketed expression.
+ // Adjust this to match the final immediate displacement.
+ bool Found = false;
+ for (SmallVectorImpl<AsmRewrite>::iterator I = AsmRewrites->begin(),
+ E = AsmRewrites->end(); I != E; ++I) {
+ if ((*I).Loc.getPointer() > BracLoc.getPointer())
+ continue;
+ if ((*I).Kind == AOK_ImmPrefix || (*I).Kind == AOK_Imm) {
+ assert (!Found && "ImmDisp already rewritten.");
+ (*I).Kind = AOK_Imm;
+ (*I).Len = BracLoc.getPointer() - (*I).Loc.getPointer();
+ (*I).Val = FinalImmDisp;
+ Found = true;
+ break;
+ }
}
- Parser.Lex(); // Eat ']'
- if (!isParsingInlineAsm())
- return X86Operand::CreateMem(Disp, Start, End, Size);
- return CreateMemForInlineAsm(Disp, Start, End, SizeDirLoc, Size,
- Identifier);
+ assert (Found && "Unable to rewrite ImmDisp.");
+ (void)Found;
+ } else {
+ // We have a symbolic and an immediate displacement, but no displacement
+ // before the bracketed expression. Put the immediate displacement
+ // before the bracketed expression.
+ AsmRewrites->push_back(AsmRewrite(AOK_Imm, BracLoc, 0, FinalImmDisp));
}
}
+ // Remove all the ImmPrefix rewrites within the brackets.
+ for (SmallVectorImpl<AsmRewrite>::iterator I = AsmRewrites->begin(),
+ E = AsmRewrites->end(); I != E; ++I) {
+ if ((*I).Loc.getPointer() < StartInBrac.getPointer())
+ continue;
+ if ((*I).Kind == AOK_ImmPrefix)
+ (*I).Kind = AOK_Delete;
+ }
+ const char *SymLocPtr = SymName.data();
+ // Skip everything before the symbol.
+ if (unsigned Len = SymLocPtr - StartInBrac.getPointer()) {
+ assert(Len > 0 && "Expected a non-negative length.");
+ AsmRewrites->push_back(AsmRewrite(AOK_Skip, StartInBrac, Len));
+ }
+ // Skip everything after the symbol.
+ if (unsigned Len = End.getPointer() - (SymLocPtr + SymName.size())) {
+ SMLoc Loc = SMLoc::getFromPointer(SymLocPtr + SymName.size());
+ assert(Len > 0 && "Expected a non-negative length.");
+ AsmRewrites->push_back(AsmRewrite(AOK_Skip, Loc, Len));
+ }
+}
- // Parse [ BaseReg + Scale*IndexReg + Disp ]. We may have already parsed an
- // immediate displacement before the bracketed expression.
- bool Done = false;
- IntelBracExprStateMachine SM(Parser, ImmDisp);
-
- // If we parsed a register, then the end loc has already been set and
- // the identifier has already been lexed. We also need to update the
- // state.
- if (TmpReg)
- SM.onRegister(TmpReg);
+bool X86AsmParser::ParseIntelExpression(IntelExprStateMachine &SM, SMLoc &End) {
+ const AsmToken &Tok = Parser.getTok();
- const MCExpr *Disp = 0;
+ bool Done = false;
while (!Done) {
bool UpdateLocLex = true;
// identifier. Don't try an parse it as a register.
if (Tok.getString().startswith("."))
break;
+
+ // If we're parsing an immediate expression, we don't expect a '['.
+ if (SM.getStopOnLBrac() && getLexer().getKind() == AsmToken::LBrac)
+ break;
switch (getLexer().getKind()) {
default: {
Done = true;
break;
}
- return ErrorOperand(Tok.getLoc(), "Unexpected token!");
+ return Error(Tok.getLoc(), "unknown token in expression");
+ }
+ case AsmToken::EndOfStatement: {
+ Done = true;
+ break;
}
case AsmToken::Identifier: {
- // This could be a register or a displacement expression.
- SMLoc Loc = Tok.getLoc();
- if(!ParseRegister(TmpReg, Loc, End)) {
+ // This could be a register or a symbolic displacement.
+ unsigned TmpReg;
+ const MCExpr *Val;
+ SMLoc IdentLoc = Tok.getLoc();
+ StringRef Identifier = Tok.getString();
+ if(!ParseRegister(TmpReg, IdentLoc, End)) {
SM.onRegister(TmpReg);
UpdateLocLex = false;
break;
- } else if (!getParser().parsePrimaryExpr(Disp, End)) {
- SM.onDispExpr();
+ } else {
+ if (!isParsingInlineAsm()) {
+ if (getParser().parsePrimaryExpr(Val, End))
+ return Error(Tok.getLoc(), "Unexpected identifier!");
+ } else {
+ // This is a dot operator, not an adjacent identifier.
+ if (Identifier.find('.') != StringRef::npos) {
+ return false;
+ } else {
+ InlineAsmIdentifierInfo &Info = SM.getIdentifierInfo();
+ if (ParseIntelIdentifier(Val, Identifier, Info,
+ /*Unevaluated=*/false, End))
+ return true;
+ }
+ }
+ SM.onIdentifierExpr(Val, Identifier);
UpdateLocLex = false;
break;
}
- return ErrorOperand(Tok.getLoc(), "Unexpected identifier!");
+ return Error(Tok.getLoc(), "Unexpected identifier!");
}
- case AsmToken::Integer:
- if (isParsingInlineAsm())
+ case AsmToken::Integer: {
+ StringRef ErrMsg;
+ if (isParsingInlineAsm() && SM.getAddImmPrefix())
InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_ImmPrefix,
Tok.getLoc()));
- SM.onInteger(Tok.getIntVal());
+ // Look for 'b' or 'f' following an Integer as a directional label
+ SMLoc Loc = getTok().getLoc();
+ int64_t IntVal = getTok().getIntVal();
+ End = consumeToken();
+ UpdateLocLex = false;
+ if (getLexer().getKind() == AsmToken::Identifier) {
+ StringRef IDVal = getTok().getString();
+ if (IDVal == "f" || IDVal == "b") {
+ MCSymbol *Sym =
+ getContext().GetDirectionalLocalSymbol(IntVal, IDVal == "b");
+ MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
+ const MCExpr *Val =
+ MCSymbolRefExpr::Create(Sym, Variant, getContext());
+ if (IDVal == "b" && Sym->isUndefined())
+ return Error(Loc, "invalid reference to undefined symbol");
+ StringRef Identifier = Sym->getName();
+ SM.onIdentifierExpr(Val, Identifier);
+ End = consumeToken();
+ } else {
+ if (SM.onInteger(IntVal, ErrMsg))
+ return Error(Loc, ErrMsg);
+ }
+ } else {
+ if (SM.onInteger(IntVal, ErrMsg))
+ return Error(Loc, ErrMsg);
+ }
break;
+ }
case AsmToken::Plus: SM.onPlus(); break;
case AsmToken::Minus: SM.onMinus(); break;
case AsmToken::Star: SM.onStar(); break;
case AsmToken::Slash: SM.onDivide(); break;
+ case AsmToken::Pipe: SM.onOr(); break;
+ case AsmToken::Amp: SM.onAnd(); break;
+ case AsmToken::LessLess:
+ SM.onLShift(); break;
+ case AsmToken::GreaterGreater:
+ SM.onRShift(); break;
case AsmToken::LBrac: SM.onLBrac(); break;
case AsmToken::RBrac: SM.onRBrac(); break;
case AsmToken::LParen: SM.onLParen(); break;
case AsmToken::RParen: SM.onRParen(); break;
}
- if (!Done && UpdateLocLex) {
- End = Tok.getLoc();
- Parser.Lex(); // Consume the token.
- }
+ if (SM.hadError())
+ return Error(Tok.getLoc(), "unknown token in expression");
+
+ if (!Done && UpdateLocLex)
+ End = consumeToken();
}
- if (isParsingInlineAsm() && Disp && isa<MCSymbolRefExpr>(Disp)) {
- // Remove the '[' and ']' from the IR string.
- InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, Start, 1));
- InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, End, 1));
+ return false;
+}
+
+X86Operand *X86AsmParser::ParseIntelBracExpression(unsigned SegReg, SMLoc Start,
+ int64_t ImmDisp,
+ unsigned Size) {
+ const AsmToken &Tok = Parser.getTok();
+ SMLoc BracLoc = Tok.getLoc(), End = Tok.getEndLoc();
+ if (getLexer().isNot(AsmToken::LBrac))
+ return ErrorOperand(BracLoc, "Expected '[' token!");
+ Parser.Lex(); // Eat '['
+
+ SMLoc StartInBrac = Tok.getLoc();
+ // Parse [ Symbol + ImmDisp ] and [ BaseReg + Scale*IndexReg + ImmDisp ]. We
+ // may have already parsed an immediate displacement before the bracketed
+ // expression.
+ IntelExprStateMachine SM(ImmDisp, /*StopOnLBrac=*/false, /*AddImmPrefix=*/true);
+ if (ParseIntelExpression(SM, End))
+ return 0;
+
+ const MCExpr *Disp = 0;
+ if (const MCExpr *Sym = SM.getSym()) {
+ // A symbolic displacement.
+ Disp = Sym;
+ if (isParsingInlineAsm())
+ RewriteIntelBracExpression(InstInfo->AsmRewrites, SM.getSymName(),
+ ImmDisp, SM.getImm(), BracLoc, StartInBrac,
+ End);
}
- if (!Disp)
- Disp = MCConstantExpr::Create(SM.getDisp(), getContext());
+ if (SM.getImm() || !Disp) {
+ const MCExpr *Imm = MCConstantExpr::Create(SM.getImm(), getContext());
+ if (Disp)
+ Disp = MCBinaryExpr::CreateAdd(Disp, Imm, getContext());
+ else
+ Disp = Imm; // An immediate displacement only.
+ }
- // Parse the dot operator (e.g., [ebx].foo.bar).
- if (Tok.getString().startswith(".")) {
- SmallString<64> Err;
+ // Parse struct field access. Intel requires a dot, but MSVC doesn't. MSVC
+ // will in fact do global lookup the field name inside all global typedefs,
+ // but we don't emulate that.
+ if (Tok.getString().find('.') != StringRef::npos) {
const MCExpr *NewDisp;
- if (ParseIntelDotOperator(Disp, &NewDisp, Err))
- return ErrorOperand(Tok.getLoc(), Err);
+ if (ParseIntelDotOperator(Disp, NewDisp))
+ return 0;
End = Tok.getEndLoc();
Parser.Lex(); // Eat the field.
int BaseReg = SM.getBaseReg();
int IndexReg = SM.getIndexReg();
-
- // handle [-42]
- if (!BaseReg && !IndexReg) {
- if (!SegReg)
- return X86Operand::CreateMem(Disp, Start, End, Size);
- else
- return X86Operand::CreateMem(SegReg, Disp, 0, 0, 1, Start, End, Size);
+ int Scale = SM.getScale();
+ if (!isParsingInlineAsm()) {
+ // handle [-42]
+ if (!BaseReg && !IndexReg) {
+ if (!SegReg)
+ return X86Operand::CreateMem(Disp, Start, End, Size);
+ else
+ return X86Operand::CreateMem(SegReg, Disp, 0, 0, 1, Start, End, Size);
+ }
+ StringRef ErrMsg;
+ if (CheckBaseRegAndIndexReg(BaseReg, IndexReg, ErrMsg)) {
+ Error(StartInBrac, ErrMsg);
+ return 0;
+ }
+ return X86Operand::CreateMem(SegReg, Disp, BaseReg, IndexReg, Scale, Start,
+ End, Size);
}
- int Scale = SM.getScale();
- return X86Operand::CreateMem(SegReg, Disp, BaseReg, IndexReg, Scale, Start,
- End, Size);
+ InlineAsmIdentifierInfo &Info = SM.getIdentifierInfo();
+ return CreateMemForInlineAsm(SegReg, Disp, BaseReg, IndexReg, Scale, Start,
+ End, Size, SM.getSymName(), Info);
}
// Inline assembly may use variable names with namespace alias qualifiers.
-X86Operand *X86AsmParser::ParseIntelVarWithQualifier(const MCExpr *&Disp,
- StringRef &Identifier) {
- // We should only see Foo::Bar if we're parsing inline assembly.
- if (!isParsingInlineAsm())
- return 0;
+bool X86AsmParser::ParseIntelIdentifier(const MCExpr *&Val,
+ StringRef &Identifier,
+ InlineAsmIdentifierInfo &Info,
+ bool IsUnevaluatedOperand, SMLoc &End) {
+ assert (isParsingInlineAsm() && "Expected to be parsing inline assembly.");
+ Val = 0;
- // If we don't see a ':' then there can't be a qualifier.
- if (getLexer().isNot(AsmToken::Colon))
- return 0;
+ StringRef LineBuf(Identifier.data());
+ SemaCallback->LookupInlineAsmIdentifier(LineBuf, Info, IsUnevaluatedOperand);
- bool Done = false;
const AsmToken &Tok = Parser.getTok();
- AsmToken IdentEnd = Tok;
- while (!Done) {
- switch (getLexer().getKind()) {
- default:
- Done = true;
- break;
- case AsmToken::Colon:
- getLexer().Lex(); // Consume ':'.
- if (getLexer().isNot(AsmToken::Colon))
- return ErrorOperand(Tok.getLoc(), "Expected ':' token!");
- getLexer().Lex(); // Consume second ':'.
- if (getLexer().isNot(AsmToken::Identifier))
- return ErrorOperand(Tok.getLoc(), "Expected an identifier token!");
- break;
- case AsmToken::Identifier:
- IdentEnd = Tok;
- getLexer().Lex(); // Consume the identifier.
- break;
- }
+
+ // Advance the token stream until the end of the current token is
+ // after the end of what the frontend claimed.
+ const char *EndPtr = Tok.getLoc().getPointer() + LineBuf.size();
+ while (true) {
+ End = Tok.getEndLoc();
+ getLexer().Lex();
+
+ assert(End.getPointer() <= EndPtr && "frontend claimed part of a token?");
+ if (End.getPointer() == EndPtr) break;
}
- unsigned Len = IdentEnd.getLoc().getPointer() - Identifier.data();
- Identifier = StringRef(Identifier.data(), Len + IdentEnd.getString().size());
+ // Create the symbol reference.
+ Identifier = LineBuf;
MCSymbol *Sym = getContext().GetOrCreateSymbol(Identifier);
MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
- Disp = MCSymbolRefExpr::Create(Sym, Variant, getParser().getContext());
- return 0;
+ Val = MCSymbolRefExpr::Create(Sym, Variant, getParser().getContext());
+ return false;
}
-/// ParseIntelMemOperand - Parse intel style memory operand.
-X86Operand *X86AsmParser::ParseIntelMemOperand(unsigned SegReg,
- uint64_t ImmDisp,
- SMLoc Start) {
- const AsmToken &Tok = Parser.getTok();
- SMLoc End;
+/// \brief Parse intel style segment override.
+X86Operand *X86AsmParser::ParseIntelSegmentOverride(unsigned SegReg,
+ SMLoc Start,
+ unsigned Size) {
+ assert(SegReg != 0 && "Tried to parse a segment override without a segment!");
+ const AsmToken &Tok = Parser.getTok(); // Eat colon.
+ if (Tok.isNot(AsmToken::Colon))
+ return ErrorOperand(Tok.getLoc(), "Expected ':' token!");
+ Parser.Lex(); // Eat ':'
+
+ int64_t ImmDisp = 0;
+ if (getLexer().is(AsmToken::Integer)) {
+ ImmDisp = Tok.getIntVal();
+ AsmToken ImmDispToken = Parser.Lex(); // Eat the integer.
- unsigned Size = getIntelMemOperandSize(Tok.getString());
- if (Size) {
- Parser.Lex();
- assert ((Tok.getString() == "PTR" || Tok.getString() == "ptr") &&
- "Unexpected token!");
- Parser.Lex();
+ if (isParsingInlineAsm())
+ InstInfo->AsmRewrites->push_back(
+ AsmRewrite(AOK_ImmPrefix, ImmDispToken.getLoc()));
+
+ if (getLexer().isNot(AsmToken::LBrac)) {
+ // An immediate following a 'segment register', 'colon' token sequence can
+ // be followed by a bracketed expression. If it isn't we know we have our
+ // final segment override.
+ const MCExpr *Disp = MCConstantExpr::Create(ImmDisp, getContext());
+ return X86Operand::CreateMem(SegReg, Disp, /*BaseReg=*/0, /*IndexReg=*/0,
+ /*Scale=*/1, Start, ImmDispToken.getEndLoc(),
+ Size);
+ }
}
- // Parse ImmDisp [ BaseReg + Scale*IndexReg + Disp ].
- if (getLexer().is(AsmToken::Integer)) {
- if (isParsingInlineAsm())
- InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_ImmPrefix,
- Tok.getLoc()));
- uint64_t ImmDisp = Tok.getIntVal();
- Parser.Lex(); // Eat the integer.
- if (getLexer().isNot(AsmToken::LBrac))
- return ErrorOperand(Start, "Expected '[' token!");
+ if (getLexer().is(AsmToken::LBrac))
return ParseIntelBracExpression(SegReg, Start, ImmDisp, Size);
+
+ const MCExpr *Val;
+ SMLoc End;
+ if (!isParsingInlineAsm()) {
+ if (getParser().parsePrimaryExpr(Val, End))
+ return ErrorOperand(Tok.getLoc(), "unknown token in expression");
+
+ return X86Operand::CreateMem(Val, Start, End, Size);
}
+ InlineAsmIdentifierInfo Info;
+ StringRef Identifier = Tok.getString();
+ if (ParseIntelIdentifier(Val, Identifier, Info,
+ /*Unevaluated=*/false, End))
+ return 0;
+ return CreateMemForInlineAsm(/*SegReg=*/0, Val, /*BaseReg=*/0,/*IndexReg=*/0,
+ /*Scale=*/1, Start, End, Size, Identifier, Info);
+}
+
+/// ParseIntelMemOperand - Parse intel style memory operand.
+X86Operand *X86AsmParser::ParseIntelMemOperand(int64_t ImmDisp, SMLoc Start,
+ unsigned Size) {
+ const AsmToken &Tok = Parser.getTok();
+ SMLoc End;
+
+ // Parse ImmDisp [ BaseReg + Scale*IndexReg + Disp ].
if (getLexer().is(AsmToken::LBrac))
- return ParseIntelBracExpression(SegReg, Start, ImmDisp, Size);
+ return ParseIntelBracExpression(/*SegReg=*/0, Start, ImmDisp, Size);
+ assert(ImmDisp == 0);
- if (!ParseRegister(SegReg, Start, End)) {
- // Handel SegReg : [ ... ]
- if (getLexer().isNot(AsmToken::Colon))
- return ErrorOperand(Start, "Expected ':' token!");
- Parser.Lex(); // Eat :
- if (getLexer().isNot(AsmToken::LBrac))
- return ErrorOperand(Start, "Expected '[' token!");
- return ParseIntelBracExpression(SegReg, Start, ImmDisp, Size);
+ const MCExpr *Val;
+ if (!isParsingInlineAsm()) {
+ if (getParser().parsePrimaryExpr(Val, End))
+ return ErrorOperand(Tok.getLoc(), "unknown token in expression");
+
+ return X86Operand::CreateMem(Val, Start, End, Size);
}
- const MCExpr *Disp = 0;
+ InlineAsmIdentifierInfo Info;
StringRef Identifier = Tok.getString();
- if (getParser().parseExpression(Disp, End))
+ if (ParseIntelIdentifier(Val, Identifier, Info,
+ /*Unevaluated=*/false, End))
return 0;
- if (!isParsingInlineAsm())
- return X86Operand::CreateMem(Disp, Start, End, Size);
+ if (!getLexer().is(AsmToken::LBrac))
+ return CreateMemForInlineAsm(/*SegReg=*/0, Val, /*BaseReg=*/0, /*IndexReg=*/0,
+ /*Scale=*/1, Start, End, Size, Identifier, Info);
+
+ Parser.Lex(); // Eat '['
+
+ // Parse Identifier [ ImmDisp ]
+ IntelExprStateMachine SM(/*ImmDisp=*/0, /*StopOnLBrac=*/true,
+ /*AddImmPrefix=*/false);
+ if (ParseIntelExpression(SM, End))
+ return 0;
- if (X86Operand *Err = ParseIntelVarWithQualifier(Disp, Identifier))
- return Err;
+ if (SM.getSym()) {
+ Error(Start, "cannot use more than one symbol in memory operand");
+ return 0;
+ }
+ if (SM.getBaseReg()) {
+ Error(Start, "cannot use base register with variable reference");
+ return 0;
+ }
+ if (SM.getIndexReg()) {
+ Error(Start, "cannot use index register with variable reference");
+ return 0;
+ }
- return CreateMemForInlineAsm(Disp, Start, End, Start, Size, Identifier);
+ const MCExpr *Disp = MCConstantExpr::Create(SM.getImm(), getContext());
+ // BaseReg is non-zero to avoid assertions. In the context of inline asm,
+ // we're pointing to a local variable in memory, so the base register is
+ // really the frame or stack pointer.
+ return X86Operand::CreateMem(/*SegReg=*/0, Disp, /*BaseReg=*/1, /*IndexReg=*/0,
+ /*Scale=*/1, Start, End, Size, Identifier,
+ Info.OpDecl);
}
/// Parse the '.' operator.
bool X86AsmParser::ParseIntelDotOperator(const MCExpr *Disp,
- const MCExpr **NewDisp,
- SmallString<64> &Err) {
+ const MCExpr *&NewDisp) {
const AsmToken &Tok = Parser.getTok();
- uint64_t OrigDispVal, DotDispVal;
+ int64_t OrigDispVal, DotDispVal;
// FIXME: Handle non-constant expressions.
- if (const MCConstantExpr *OrigDisp = dyn_cast<MCConstantExpr>(Disp)) {
+ if (const MCConstantExpr *OrigDisp = dyn_cast<MCConstantExpr>(Disp))
OrigDispVal = OrigDisp->getValue();
- } else {
- Err = "Non-constant offsets are not supported!";
- return true;
- }
+ else
+ return Error(Tok.getLoc(), "Non-constant offsets are not supported!");
- // Drop the '.'.
- StringRef DotDispStr = Tok.getString().drop_front(1);
+ // Drop the optional '.'.
+ StringRef DotDispStr = Tok.getString();
+ if (DotDispStr.startswith("."))
+ DotDispStr = DotDispStr.drop_front(1);
// .Imm gets lexed as a real.
if (Tok.is(AsmToken::Real)) {
APInt DotDisp;
DotDispStr.getAsInteger(10, DotDisp);
DotDispVal = DotDisp.getZExtValue();
- } else if (Tok.is(AsmToken::Identifier)) {
- // We should only see an identifier when parsing the original inline asm.
- // The front-end should rewrite this in terms of immediates.
- assert (isParsingInlineAsm() && "Unexpected field name!");
-
+ } else if (isParsingInlineAsm() && Tok.is(AsmToken::Identifier)) {
unsigned DotDisp;
std::pair<StringRef, StringRef> BaseMember = DotDispStr.split('.');
if (SemaCallback->LookupInlineAsmField(BaseMember.first, BaseMember.second,
- DotDisp)) {
- Err = "Unable to lookup field reference!";
- return true;
- }
+ DotDisp))
+ return Error(Tok.getLoc(), "Unable to lookup field reference!");
DotDispVal = DotDisp;
- } else {
- Err = "Unexpected token type!";
- return true;
- }
+ } else
+ return Error(Tok.getLoc(), "Unexpected token type!");
if (isParsingInlineAsm() && Tok.is(AsmToken::Identifier)) {
SMLoc Loc = SMLoc::getFromPointer(DotDispStr.data());
Val));
}
- *NewDisp = MCConstantExpr::Create(OrigDispVal + DotDispVal, getContext());
+ NewDisp = MCConstantExpr::Create(OrigDispVal + DotDispVal, getContext());
return false;
}
const AsmToken &Tok = Parser.getTok();
SMLoc OffsetOfLoc = Tok.getLoc();
Parser.Lex(); // Eat offset.
- assert (Tok.is(AsmToken::Identifier) && "Expected an identifier");
const MCExpr *Val;
+ InlineAsmIdentifierInfo Info;
SMLoc Start = Tok.getLoc(), End;
StringRef Identifier = Tok.getString();
- if (getParser().parsePrimaryExpr(Val, End))
- return ErrorOperand(Start, "Unable to parse expression!");
-
- const MCExpr *Disp = 0;
- if (X86Operand *Err = ParseIntelVarWithQualifier(Disp, Identifier))
- return Err;
+ if (ParseIntelIdentifier(Val, Identifier, Info,
+ /*Unevaluated=*/false, End))
+ return 0;
// Don't emit the offset operator.
InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Skip, OffsetOfLoc, 7));
// The offset operator will have an 'r' constraint, thus we need to create
// register operand to ensure proper matching. Just pick a GPR based on
// the size of a pointer.
- unsigned RegNo = is64BitMode() ? X86::RBX : X86::EBX;
+ unsigned RegNo =
+ is64BitMode() ? X86::RBX : (is32BitMode() ? X86::EBX : X86::BX);
return X86Operand::CreateReg(RegNo, Start, End, /*GetAddress=*/true,
- OffsetOfLoc, Identifier);
+ OffsetOfLoc, Identifier, Info.OpDecl);
}
enum IntelOperatorKind {
const AsmToken &Tok = Parser.getTok();
SMLoc TypeLoc = Tok.getLoc();
Parser.Lex(); // Eat operator.
- assert (Tok.is(AsmToken::Identifier) && "Expected an identifier");
- const MCExpr *Val;
+ const MCExpr *Val = 0;
+ InlineAsmIdentifierInfo Info;
SMLoc Start = Tok.getLoc(), End;
- if (getParser().parsePrimaryExpr(Val, End))
+ StringRef Identifier = Tok.getString();
+ if (ParseIntelIdentifier(Val, Identifier, Info,
+ /*Unevaluated=*/true, End))
return 0;
- unsigned Length = 0, Size = 0, Type = 0;
- if (const MCSymbolRefExpr *SymRef = dyn_cast<MCSymbolRefExpr>(Val)) {
- const MCSymbol &Sym = SymRef->getSymbol();
- // FIXME: The SemaLookup will fail if the name is anything other then an
- // identifier.
- // FIXME: Pass a valid SMLoc.
- bool IsVarDecl;
- if (!SemaCallback->LookupInlineAsmIdentifier(Sym.getName(), NULL, Length,
- Size, Type, IsVarDecl))
- return ErrorOperand(Start, "Unable to lookup expr!");
- }
- unsigned CVal;
+ if (!Info.OpDecl)
+ return ErrorOperand(Start, "unable to lookup expression");
+
+ unsigned CVal = 0;
switch(OpKind) {
default: llvm_unreachable("Unexpected operand kind!");
- case IOK_LENGTH: CVal = Length; break;
- case IOK_SIZE: CVal = Size; break;
- case IOK_TYPE: CVal = Type; break;
+ case IOK_LENGTH: CVal = Info.Length; break;
+ case IOK_SIZE: CVal = Info.Size; break;
+ case IOK_TYPE: CVal = Info.Type; break;
}
// Rewrite the type operator and the C or C++ type or variable in terms of an
X86Operand *X86AsmParser::ParseIntelOperand() {
const AsmToken &Tok = Parser.getTok();
- SMLoc Start = Tok.getLoc(), End;
- StringRef AsmTokStr = Tok.getString();
+ SMLoc Start, End;
// Offset, length, type and size operators.
if (isParsingInlineAsm()) {
+ StringRef AsmTokStr = Tok.getString();
if (AsmTokStr == "offset" || AsmTokStr == "OFFSET")
return ParseIntelOffsetOfOperator();
if (AsmTokStr == "length" || AsmTokStr == "LENGTH")
return ParseIntelOperator(IOK_TYPE);
}
+ unsigned Size = getIntelMemOperandSize(Tok.getString());
+ if (Size) {
+ Parser.Lex(); // Eat operand size (e.g., byte, word).
+ if (Tok.getString() != "PTR" && Tok.getString() != "ptr")
+ return ErrorOperand(Start, "Expected 'PTR' or 'ptr' token!");
+ Parser.Lex(); // Eat ptr.
+ }
+ Start = Tok.getLoc();
+
// Immediate.
- if (getLexer().is(AsmToken::Integer) || getLexer().is(AsmToken::Real) ||
- getLexer().is(AsmToken::Minus)) {
- const MCExpr *Val;
- bool isInteger = getLexer().is(AsmToken::Integer);
- if (!getParser().parseExpression(Val, End)) {
- if (isParsingInlineAsm())
+ if (getLexer().is(AsmToken::Integer) || getLexer().is(AsmToken::Minus) ||
+ getLexer().is(AsmToken::LParen)) {
+ AsmToken StartTok = Tok;
+ IntelExprStateMachine SM(/*Imm=*/0, /*StopOnLBrac=*/true,
+ /*AddImmPrefix=*/false);
+ if (ParseIntelExpression(SM, End))
+ return 0;
+
+ int64_t Imm = SM.getImm();
+ if (isParsingInlineAsm()) {
+ unsigned Len = Tok.getLoc().getPointer() - Start.getPointer();
+ if (StartTok.getString().size() == Len)
+ // Just add a prefix if this wasn't a complex immediate expression.
InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_ImmPrefix, Start));
- // Immediate.
- if (getLexer().isNot(AsmToken::LBrac))
- return X86Operand::CreateImm(Val, Start, End);
-
- // Only positive immediates are valid.
- if (!isInteger) {
- Error(Tok.getLoc(), "expected a positive immediate "
- "displacement before bracketed expr.");
- return 0;
- }
+ else
+ // Otherwise, rewrite the complex expression as a single immediate.
+ InstInfo->AsmRewrites->push_back(AsmRewrite(AOK_Imm, Start, Len, Imm));
+ }
+
+ if (getLexer().isNot(AsmToken::LBrac)) {
+ // If a directional label (ie. 1f or 2b) was parsed above from
+ // ParseIntelExpression() then SM.getSym() was set to a pointer to
+ // to the MCExpr with the directional local symbol and this is a
+ // memory operand not an immediate operand.
+ if (SM.getSym())
+ return X86Operand::CreateMem(SM.getSym(), Start, End, Size);
- // Parse ImmDisp [ BaseReg + Scale*IndexReg + Disp ].
- if (uint64_t ImmDisp = dyn_cast<MCConstantExpr>(Val)->getValue())
- return ParseIntelMemOperand(/*SegReg=*/0, ImmDisp, Start);
+ const MCExpr *ImmExpr = MCConstantExpr::Create(Imm, getContext());
+ return X86Operand::CreateImm(ImmExpr, Start, End);
}
+
+ // Only positive immediates are valid.
+ if (Imm < 0)
+ return ErrorOperand(Start, "expected a positive immediate displacement "
+ "before bracketed expr.");
+
+ // Parse ImmDisp [ BaseReg + Scale*IndexReg + Disp ].
+ return ParseIntelMemOperand(Imm, Start, Size);
}
// Register.
unsigned RegNo = 0;
if (!ParseRegister(RegNo, Start, End)) {
// If this is a segment register followed by a ':', then this is the start
- // of a memory reference, otherwise this is a normal register reference.
+ // of a segment override, otherwise this is a normal register reference.
if (getLexer().isNot(AsmToken::Colon))
return X86Operand::CreateReg(RegNo, Start, End);
- getParser().Lex(); // Eat the colon.
- return ParseIntelMemOperand(/*SegReg=*/RegNo, /*Disp=*/0, Start);
+ return ParseIntelSegmentOverride(/*SegReg=*/RegNo, Start, Size);
}
// Memory operand.
- return ParseIntelMemOperand(/*SegReg=*/0, /*Disp=*/0, Start);
+ return ParseIntelMemOperand(/*Disp=*/0, Start, Size);
}
X86Operand *X86AsmParser::ParseATTOperand() {
}
}
+bool
+X86AsmParser::HandleAVX512Operand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
+ const MCParsedAsmOperand &Op) {
+ if(STI.getFeatureBits() & X86::FeatureAVX512) {
+ if (getLexer().is(AsmToken::LCurly)) {
+ // Eat "{" and mark the current place.
+ const SMLoc consumedToken = consumeToken();
+ // Distinguish {1to<NUM>} from {%k<NUM>}.
+ if(getLexer().is(AsmToken::Integer)) {
+ // Parse memory broadcasting ({1to<NUM>}).
+ if (getLexer().getTok().getIntVal() != 1)
+ return !ErrorAndEatStatement(getLexer().getLoc(),
+ "Expected 1to<NUM> at this point");
+ Parser.Lex(); // Eat "1" of 1to8
+ if (!getLexer().is(AsmToken::Identifier) ||
+ !getLexer().getTok().getIdentifier().startswith("to"))
+ return !ErrorAndEatStatement(getLexer().getLoc(),
+ "Expected 1to<NUM> at this point");
+ // Recognize only reasonable suffixes.
+ const char *BroadcastPrimitive =
+ StringSwitch<const char*>(getLexer().getTok().getIdentifier())
+ .Case("to8", "{1to8}")
+ .Case("to16", "{1to16}")
+ .Default(0);
+ if (!BroadcastPrimitive)
+ return !ErrorAndEatStatement(getLexer().getLoc(),
+ "Invalid memory broadcast primitive.");
+ Parser.Lex(); // Eat "toN" of 1toN
+ if (!getLexer().is(AsmToken::RCurly))
+ return !ErrorAndEatStatement(getLexer().getLoc(),
+ "Expected } at this point");
+ Parser.Lex(); // Eat "}"
+ Operands.push_back(X86Operand::CreateToken(BroadcastPrimitive,
+ consumedToken));
+ // No AVX512 specific primitives can pass
+ // after memory broadcasting, so return.
+ return true;
+ } else {
+ // Parse mask register {%k1}
+ Operands.push_back(X86Operand::CreateToken("{", consumedToken));
+ if (X86Operand *Op = ParseOperand()) {
+ Operands.push_back(Op);
+ if (!getLexer().is(AsmToken::RCurly))
+ return !ErrorAndEatStatement(getLexer().getLoc(),
+ "Expected } at this point");
+ Operands.push_back(X86Operand::CreateToken("}", consumeToken()));
+
+ // Parse "zeroing non-masked" semantic {z}
+ if (getLexer().is(AsmToken::LCurly)) {
+ Operands.push_back(X86Operand::CreateToken("{z}", consumeToken()));
+ if (!getLexer().is(AsmToken::Identifier) ||
+ getLexer().getTok().getIdentifier() != "z")
+ return !ErrorAndEatStatement(getLexer().getLoc(),
+ "Expected z at this point");
+ Parser.Lex(); // Eat the z
+ if (!getLexer().is(AsmToken::RCurly))
+ return !ErrorAndEatStatement(getLexer().getLoc(),
+ "Expected } at this point");
+ Parser.Lex(); // Eat the }
+ }
+ }
+ }
+ }
+ }
+ return true;
+}
+
/// ParseMemOperand: segment: disp(basereg, indexreg, scale). The '%ds:' prefix
/// has already been parsed if present.
X86Operand *X86AsmParser::ParseMemOperand(unsigned SegReg, SMLoc MemStart) {
// If we reached here, then we just ate the ( of the memory operand. Process
// the rest of the memory operand.
unsigned BaseReg = 0, IndexReg = 0, Scale = 1;
- SMLoc IndexLoc;
+ SMLoc IndexLoc, BaseLoc;
if (getLexer().is(AsmToken::Percent)) {
SMLoc StartLoc, EndLoc;
+ BaseLoc = Parser.getTok().getLoc();
if (ParseRegister(BaseReg, StartLoc, EndLoc)) return 0;
if (BaseReg == X86::EIZ || BaseReg == X86::RIZ) {
Error(StartLoc, "eiz and riz can only be used as index registers",
}
// Validate the scale amount.
+ if (X86MCRegisterClasses[X86::GR16RegClassID].contains(BaseReg) &&
+ ScaleVal != 1) {
+ Error(Loc, "scale factor in 16-bit address must be 1");
+ return 0;
+ }
if (ScaleVal != 1 && ScaleVal != 2 && ScaleVal != 4 && ScaleVal != 8){
Error(Loc, "scale factor in address must be 1, 2, 4 or 8");
return 0;
SMLoc MemEnd = Parser.getTok().getEndLoc();
Parser.Lex(); // Eat the ')'.
- // If we have both a base register and an index register make sure they are
- // both 64-bit or 32-bit registers.
- // To support VSIB, IndexReg can be 128-bit or 256-bit registers.
- if (BaseReg != 0 && IndexReg != 0) {
- if (X86MCRegisterClasses[X86::GR64RegClassID].contains(BaseReg) &&
- (X86MCRegisterClasses[X86::GR16RegClassID].contains(IndexReg) ||
- X86MCRegisterClasses[X86::GR32RegClassID].contains(IndexReg)) &&
- IndexReg != X86::RIZ) {
- Error(IndexLoc, "index register is 32-bit, but base register is 64-bit");
- return 0;
- }
- if (X86MCRegisterClasses[X86::GR32RegClassID].contains(BaseReg) &&
- (X86MCRegisterClasses[X86::GR16RegClassID].contains(IndexReg) ||
- X86MCRegisterClasses[X86::GR64RegClassID].contains(IndexReg)) &&
- IndexReg != X86::EIZ){
- Error(IndexLoc, "index register is 64-bit, but base register is 32-bit");
- return 0;
- }
+ // Check for use of invalid 16-bit registers. Only BX/BP/SI/DI are allowed,
+ // and then only in non-64-bit modes. Except for DX, which is a special case
+ // because an unofficial form of in/out instructions uses it.
+ if (X86MCRegisterClasses[X86::GR16RegClassID].contains(BaseReg) &&
+ (is64BitMode() || (BaseReg != X86::BX && BaseReg != X86::BP &&
+ BaseReg != X86::SI && BaseReg != X86::DI)) &&
+ BaseReg != X86::DX) {
+ Error(BaseLoc, "invalid 16-bit base register");
+ return 0;
+ }
+ if (BaseReg == 0 &&
+ X86MCRegisterClasses[X86::GR16RegClassID].contains(IndexReg)) {
+ Error(IndexLoc, "16-bit memory operand may not include only index register");
+ return 0;
+ }
+
+ StringRef ErrMsg;
+ if (CheckBaseRegAndIndexReg(BaseReg, IndexReg, ErrMsg)) {
+ Error(BaseLoc, ErrMsg);
+ return 0;
}
return X86Operand::CreateMem(SegReg, Disp, BaseReg, IndexReg, Scale,
if (getLexer().isNot(AsmToken::EndOfStatement) && !isPrefix) {
// Parse '*' modifier.
- if (getLexer().is(AsmToken::Star)) {
- SMLoc Loc = Parser.getTok().getLoc();
- Operands.push_back(X86Operand::CreateToken("*", Loc));
- Parser.Lex(); // Eat the star.
- }
-
- // Read the first operand.
- if (X86Operand *Op = ParseOperand())
- Operands.push_back(Op);
- else {
- Parser.eatToEndOfStatement();
- return true;
- }
-
- while (getLexer().is(AsmToken::Comma)) {
- Parser.Lex(); // Eat the comma.
-
- // Parse and remember the operand.
- if (X86Operand *Op = ParseOperand())
- Operands.push_back(Op);
- else {
- Parser.eatToEndOfStatement();
- return true;
+ if (getLexer().is(AsmToken::Star))
+ Operands.push_back(X86Operand::CreateToken("*", consumeToken()));
+
+ // Read the operands.
+ while(1) {
+ if (X86Operand *Op = ParseOperand()) {
+ Operands.push_back(Op);
+ if (!HandleAVX512Operand(Operands, *Op))
+ return true;
+ } else {
+ Parser.eatToEndOfStatement();
+ return true;
}
- }
+ // check for comma and eat it
+ if (getLexer().is(AsmToken::Comma))
+ Parser.Lex();
+ else
+ break;
+ }
- if (getLexer().isNot(AsmToken::EndOfStatement)) {
- SMLoc Loc = getLexer().getLoc();
- Parser.eatToEndOfStatement();
- return Error(Loc, "unexpected token in argument list");
- }
- }
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return ErrorAndEatStatement(getLexer().getLoc(),
+ "unexpected token in argument list");
+ }
- if (getLexer().is(AsmToken::EndOfStatement))
- Parser.Lex(); // Consume the EndOfStatement
- else if (isPrefix && getLexer().is(AsmToken::Slash))
- Parser.Lex(); // Consume the prefix separator Slash
+ // Consume the EndOfStatement or the prefix separator Slash
+ if (getLexer().is(AsmToken::EndOfStatement) ||
+ (isPrefix && getLexer().is(AsmToken::Slash)))
+ Parser.Lex();
if (ExtraImmOp && isParsingIntelSyntax())
Operands.push_back(X86Operand::CreateImm(ExtraImmOp, NameLoc, NameLoc));
delete &Op;
}
}
- // Transform "ins[bwl] %dx, %es:(%edi)" into "ins[bwl]"
- if (Name.startswith("ins") && Operands.size() == 3 &&
- (Name == "insb" || Name == "insw" || Name == "insl")) {
- X86Operand &Op = *(X86Operand*)Operands.begin()[1];
- X86Operand &Op2 = *(X86Operand*)Operands.begin()[2];
- if (Op.isReg() && Op.getReg() == X86::DX && isDstOp(Op2)) {
- Operands.pop_back();
- Operands.pop_back();
- delete &Op;
- delete &Op2;
- }
- }
- // Transform "outs[bwl] %ds:(%esi), %dx" into "out[bwl]"
- if (Name.startswith("outs") && Operands.size() == 3 &&
- (Name == "outsb" || Name == "outsw" || Name == "outsl")) {
- X86Operand &Op = *(X86Operand*)Operands.begin()[1];
- X86Operand &Op2 = *(X86Operand*)Operands.begin()[2];
- if (isSrcOp(Op) && Op2.isReg() && Op2.getReg() == X86::DX) {
- Operands.pop_back();
- Operands.pop_back();
- delete &Op;
- delete &Op2;
+ // Append default arguments to "ins[bwld]"
+ if (Name.startswith("ins") && Operands.size() == 1 &&
+ (Name == "insb" || Name == "insw" || Name == "insl" ||
+ Name == "insd" )) {
+ if (isParsingIntelSyntax()) {
+ Operands.push_back(X86Operand::CreateReg(X86::DX, NameLoc, NameLoc));
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
+ } else {
+ Operands.push_back(X86Operand::CreateReg(X86::DX, NameLoc, NameLoc));
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
}
}
- // Transform "movs[bwl] %ds:(%esi), %es:(%edi)" into "movs[bwl]"
- if (Name.startswith("movs") && Operands.size() == 3 &&
- (Name == "movsb" || Name == "movsw" || Name == "movsl" ||
- (is64BitMode() && Name == "movsq"))) {
- X86Operand &Op = *(X86Operand*)Operands.begin()[1];
- X86Operand &Op2 = *(X86Operand*)Operands.begin()[2];
- if (isSrcOp(Op) && isDstOp(Op2)) {
- Operands.pop_back();
- Operands.pop_back();
- delete &Op;
- delete &Op2;
+ // Append default arguments to "outs[bwld]"
+ if (Name.startswith("outs") && Operands.size() == 1 &&
+ (Name == "outsb" || Name == "outsw" || Name == "outsl" ||
+ Name == "outsd" )) {
+ if (isParsingIntelSyntax()) {
+ Operands.push_back(DefaultMemSIOperand(NameLoc));
+ Operands.push_back(X86Operand::CreateReg(X86::DX, NameLoc, NameLoc));
+ } else {
+ Operands.push_back(DefaultMemSIOperand(NameLoc));
+ Operands.push_back(X86Operand::CreateReg(X86::DX, NameLoc, NameLoc));
}
}
- // Transform "lods[bwl] %ds:(%esi),{%al,%ax,%eax,%rax}" into "lods[bwl]"
- if (Name.startswith("lods") && Operands.size() == 3 &&
+
+ // Transform "lods[bwlq]" into "lods[bwlq] ($SIREG)" for appropriate
+ // values of $SIREG according to the mode. It would be nice if this
+ // could be achieved with InstAlias in the tables.
+ if (Name.startswith("lods") && Operands.size() == 1 &&
(Name == "lods" || Name == "lodsb" || Name == "lodsw" ||
- Name == "lodsl" || (is64BitMode() && Name == "lodsq"))) {
- X86Operand *Op1 = static_cast<X86Operand*>(Operands[1]);
- X86Operand *Op2 = static_cast<X86Operand*>(Operands[2]);
- if (isSrcOp(*Op1) && Op2->isReg()) {
- const char *ins;
- unsigned reg = Op2->getReg();
- bool isLods = Name == "lods";
- if (reg == X86::AL && (isLods || Name == "lodsb"))
- ins = "lodsb";
- else if (reg == X86::AX && (isLods || Name == "lodsw"))
- ins = "lodsw";
- else if (reg == X86::EAX && (isLods || Name == "lodsl"))
- ins = "lodsl";
- else if (reg == X86::RAX && (isLods || Name == "lodsq"))
- ins = "lodsq";
- else
- ins = NULL;
- if (ins != NULL) {
- Operands.pop_back();
- Operands.pop_back();
- delete Op1;
- delete Op2;
- if (Name != ins)
- static_cast<X86Operand*>(Operands[0])->setTokenValue(ins);
+ Name == "lodsl" || Name == "lodsd" || Name == "lodsq"))
+ Operands.push_back(DefaultMemSIOperand(NameLoc));
+
+ // Transform "stos[bwlq]" into "stos[bwlq] ($DIREG)" for appropriate
+ // values of $DIREG according to the mode. It would be nice if this
+ // could be achieved with InstAlias in the tables.
+ if (Name.startswith("stos") && Operands.size() == 1 &&
+ (Name == "stos" || Name == "stosb" || Name == "stosw" ||
+ Name == "stosl" || Name == "stosd" || Name == "stosq"))
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
+
+ // Transform "scas[bwlq]" into "scas[bwlq] ($DIREG)" for appropriate
+ // values of $DIREG according to the mode. It would be nice if this
+ // could be achieved with InstAlias in the tables.
+ if (Name.startswith("scas") && Operands.size() == 1 &&
+ (Name == "scas" || Name == "scasb" || Name == "scasw" ||
+ Name == "scasl" || Name == "scasd" || Name == "scasq"))
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
+
+ // Add default SI and DI operands to "cmps[bwlq]".
+ if (Name.startswith("cmps") &&
+ (Name == "cmps" || Name == "cmpsb" || Name == "cmpsw" ||
+ Name == "cmpsl" || Name == "cmpsd" || Name == "cmpsq")) {
+ if (Operands.size() == 1) {
+ if (isParsingIntelSyntax()) {
+ Operands.push_back(DefaultMemSIOperand(NameLoc));
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
+ } else {
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
+ Operands.push_back(DefaultMemSIOperand(NameLoc));
}
+ } else if (Operands.size() == 3) {
+ X86Operand &Op = *(X86Operand*)Operands.begin()[1];
+ X86Operand &Op2 = *(X86Operand*)Operands.begin()[2];
+ if (!doSrcDstMatch(Op, Op2))
+ return Error(Op.getStartLoc(),
+ "mismatching source and destination index registers");
}
}
- // Transform "stos[bwl] {%al,%ax,%eax,%rax},%es:(%edi)" into "stos[bwl]"
- if (Name.startswith("stos") && Operands.size() == 3 &&
- (Name == "stos" || Name == "stosb" || Name == "stosw" ||
- Name == "stosl" || (is64BitMode() && Name == "stosq"))) {
- X86Operand *Op1 = static_cast<X86Operand*>(Operands[1]);
- X86Operand *Op2 = static_cast<X86Operand*>(Operands[2]);
- if (isDstOp(*Op2) && Op1->isReg()) {
- const char *ins;
- unsigned reg = Op1->getReg();
- bool isStos = Name == "stos";
- if (reg == X86::AL && (isStos || Name == "stosb"))
- ins = "stosb";
- else if (reg == X86::AX && (isStos || Name == "stosw"))
- ins = "stosw";
- else if (reg == X86::EAX && (isStos || Name == "stosl"))
- ins = "stosl";
- else if (reg == X86::RAX && (isStos || Name == "stosq"))
- ins = "stosq";
- else
- ins = NULL;
- if (ins != NULL) {
- Operands.pop_back();
- Operands.pop_back();
- delete Op1;
- delete Op2;
- if (Name != ins)
- static_cast<X86Operand*>(Operands[0])->setTokenValue(ins);
+
+ // Add default SI and DI operands to "movs[bwlq]".
+ if ((Name.startswith("movs") &&
+ (Name == "movs" || Name == "movsb" || Name == "movsw" ||
+ Name == "movsl" || Name == "movsd" || Name == "movsq")) ||
+ (Name.startswith("smov") &&
+ (Name == "smov" || Name == "smovb" || Name == "smovw" ||
+ Name == "smovl" || Name == "smovd" || Name == "smovq"))) {
+ if (Operands.size() == 1) {
+ if (Name == "movsd") {
+ delete Operands.back();
+ Operands.back() = X86Operand::CreateToken("movsl", NameLoc);
}
+ if (isParsingIntelSyntax()) {
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
+ Operands.push_back(DefaultMemSIOperand(NameLoc));
+ } else {
+ Operands.push_back(DefaultMemSIOperand(NameLoc));
+ Operands.push_back(DefaultMemDIOperand(NameLoc));
+ }
+ } else if (Operands.size() == 3) {
+ X86Operand &Op = *(X86Operand*)Operands.begin()[1];
+ X86Operand &Op2 = *(X86Operand*)Operands.begin()[2];
+ if (!doSrcDstMatch(Op, Op2))
+ return Error(Op.getStartLoc(),
+ "mismatching source and destination index registers");
}
}
case X86::SBB16i16: return convert16i16to16ri8(Inst, X86::SBB16ri8);
case X86::SBB32i32: return convert32i32to32ri8(Inst, X86::SBB32ri8);
case X86::SBB64i32: return convert64i32to64ri8(Inst, X86::SBB64ri8);
+ case X86::VMOVAPDrr:
+ case X86::VMOVAPDYrr:
+ case X86::VMOVAPSrr:
+ case X86::VMOVAPSYrr:
+ case X86::VMOVDQArr:
+ case X86::VMOVDQAYrr:
+ case X86::VMOVDQUrr:
+ case X86::VMOVDQUYrr:
+ case X86::VMOVUPDrr:
+ case X86::VMOVUPDYrr:
+ case X86::VMOVUPSrr:
+ case X86::VMOVUPSYrr: {
+ if (X86II::isX86_64ExtendedReg(Inst.getOperand(0).getReg()) ||
+ !X86II::isX86_64ExtendedReg(Inst.getOperand(1).getReg()))
+ return false;
+
+ unsigned NewOpc;
+ switch (Inst.getOpcode()) {
+ default: llvm_unreachable("Invalid opcode");
+ case X86::VMOVAPDrr: NewOpc = X86::VMOVAPDrr_REV; break;
+ case X86::VMOVAPDYrr: NewOpc = X86::VMOVAPDYrr_REV; break;
+ case X86::VMOVAPSrr: NewOpc = X86::VMOVAPSrr_REV; break;
+ case X86::VMOVAPSYrr: NewOpc = X86::VMOVAPSYrr_REV; break;
+ case X86::VMOVDQArr: NewOpc = X86::VMOVDQArr_REV; break;
+ case X86::VMOVDQAYrr: NewOpc = X86::VMOVDQAYrr_REV; break;
+ case X86::VMOVDQUrr: NewOpc = X86::VMOVDQUrr_REV; break;
+ case X86::VMOVDQUYrr: NewOpc = X86::VMOVDQUYrr_REV; break;
+ case X86::VMOVUPDrr: NewOpc = X86::VMOVUPDrr_REV; break;
+ case X86::VMOVUPDYrr: NewOpc = X86::VMOVUPDYrr_REV; break;
+ case X86::VMOVUPSrr: NewOpc = X86::VMOVUPSrr_REV; break;
+ case X86::VMOVUPSYrr: NewOpc = X86::VMOVUPSYrr_REV; break;
+ }
+ Inst.setOpcode(NewOpc);
+ return true;
+ }
+ case X86::VMOVSDrr:
+ case X86::VMOVSSrr: {
+ if (X86II::isX86_64ExtendedReg(Inst.getOperand(0).getReg()) ||
+ !X86II::isX86_64ExtendedReg(Inst.getOperand(2).getReg()))
+ return false;
+ unsigned NewOpc;
+ switch (Inst.getOpcode()) {
+ default: llvm_unreachable("Invalid opcode");
+ case X86::VMOVSDrr: NewOpc = X86::VMOVSDrr_REV; break;
+ case X86::VMOVSSrr: NewOpc = X86::VMOVSSrr_REV; break;
+ }
+ Inst.setOpcode(NewOpc);
+ return true;
+ }
}
}
static const char *getSubtargetFeatureName(unsigned Val);
+
+void X86AsmParser::EmitInstruction(
+ MCInst &Inst, SmallVectorImpl<MCParsedAsmOperand *> &Operands,
+ MCStreamer &Out) {
+ Instrumentation->InstrumentInstruction(Inst, Operands, getContext(), Out);
+ Out.EmitInstruction(Inst, STI);
+}
+
bool X86AsmParser::
MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
SmallVectorImpl<MCParsedAsmOperand*> &Operands,
assert(!Operands.empty() && "Unexpect empty operand list!");
X86Operand *Op = static_cast<X86Operand*>(Operands[0]);
assert(Op->isToken() && "Leading operand should always be a mnemonic!");
- ArrayRef<SMRange> EmptyRanges = ArrayRef<SMRange>();
+ ArrayRef<SMRange> EmptyRanges = None;
// First, handle aliases that expand to multiple instructions.
// FIXME: This should be replaced with a real .td file alias mechanism.
Inst.setOpcode(X86::WAIT);
Inst.setLoc(IDLoc);
if (!MatchingInlineAsm)
- Out.EmitInstruction(Inst);
+ EmitInstruction(Inst, Operands, Out);
const char *Repl =
StringSwitch<const char*>(Op->getToken())
Inst.setLoc(IDLoc);
if (!MatchingInlineAsm)
- Out.EmitInstruction(Inst);
+ EmitInstruction(Inst, Operands, Out);
Opcode = Inst.getOpcode();
return false;
case Match_MissingFeature: {
unsigned Match1, Match2, Match3, Match4;
Match1 = MatchInstructionImpl(Operands, Inst, ErrorInfoIgnore,
- isParsingIntelSyntax());
+ MatchingInlineAsm, isParsingIntelSyntax());
// If this returned as a missing feature failure, remember that.
if (Match1 == Match_MissingFeature)
ErrorInfoMissingFeature = ErrorInfoIgnore;
Tmp[Base.size()] = Suffixes[1];
Match2 = MatchInstructionImpl(Operands, Inst, ErrorInfoIgnore,
- isParsingIntelSyntax());
+ MatchingInlineAsm, isParsingIntelSyntax());
// If this returned as a missing feature failure, remember that.
if (Match2 == Match_MissingFeature)
ErrorInfoMissingFeature = ErrorInfoIgnore;
Tmp[Base.size()] = Suffixes[2];
Match3 = MatchInstructionImpl(Operands, Inst, ErrorInfoIgnore,
- isParsingIntelSyntax());
+ MatchingInlineAsm, isParsingIntelSyntax());
// If this returned as a missing feature failure, remember that.
if (Match3 == Match_MissingFeature)
ErrorInfoMissingFeature = ErrorInfoIgnore;
Tmp[Base.size()] = Suffixes[3];
Match4 = MatchInstructionImpl(Operands, Inst, ErrorInfoIgnore,
- isParsingIntelSyntax());
+ MatchingInlineAsm, isParsingIntelSyntax());
// If this returned as a missing feature failure, remember that.
if (Match4 == Match_MissingFeature)
ErrorInfoMissingFeature = ErrorInfoIgnore;
if (NumSuccessfulMatches == 1) {
Inst.setLoc(IDLoc);
if (!MatchingInlineAsm)
- Out.EmitInstruction(Inst);
+ EmitInstruction(Inst, Operands, Out);
Opcode = Inst.getOpcode();
return false;
}
} else if (IDVal.startswith(".intel_syntax")) {
getParser().setAssemblerDialect(1);
if (getLexer().isNot(AsmToken::EndOfStatement)) {
- if(Parser.getTok().getString() == "noprefix") {
- // FIXME : Handle noprefix
+ // FIXME: Handle noprefix
+ if (Parser.getTok().getString() == "noprefix")
Parser.Lex();
- } else
- return true;
}
return false;
}
for (;;) {
const MCExpr *Value;
if (getParser().parseExpression(Value))
- return true;
+ return false;
getParser().getStreamer().EmitValue(Value, Size);
break;
// FIXME: Improve diagnostic.
- if (getLexer().isNot(AsmToken::Comma))
- return Error(L, "unexpected token in directive");
+ if (getLexer().isNot(AsmToken::Comma)) {
+ Error(L, "unexpected token in directive");
+ return false;
+ }
Parser.Lex();
}
}
}
/// ParseDirectiveCode
-/// ::= .code32 | .code64
+/// ::= .code16 | .code32 | .code64
bool X86AsmParser::ParseDirectiveCode(StringRef IDVal, SMLoc L) {
- if (IDVal == ".code32") {
+ if (IDVal == ".code16") {
+ Parser.Lex();
+ if (!is16BitMode()) {
+ SwitchMode(X86::Mode16Bit);
+ getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16);
+ }
+ } else if (IDVal == ".code32") {
Parser.Lex();
- if (is64BitMode()) {
- SwitchMode();
+ if (!is32BitMode()) {
+ SwitchMode(X86::Mode32Bit);
getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32);
}
} else if (IDVal == ".code64") {
Parser.Lex();
if (!is64BitMode()) {
- SwitchMode();
+ SwitchMode(X86::Mode64Bit);
getParser().getStreamer().EmitAssemblerFlag(MCAF_Code64);
}
} else {
- return Error(L, "unexpected directive " + IDVal);
+ Error(L, "unknown directive " + IDVal);
+ return false;
}
return false;
projects / oota-llvm.git / blobdiff