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llvm-mc: Introduce method to match a parsed x86 instruction into an MCInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74573 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -506,7 +506,7 @@ bool AsmParser::ParseStatement() {
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}
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MCInst Inst;
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if (ParseX86InstOperands(Inst))
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if (ParseX86InstOperands(IDVal, Inst))
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return true;
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if (Lexer.isNot(asmtok::EndOfStatement))
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@ -25,12 +25,14 @@ class MCStreamer;
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class MCValue;
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class AsmParser {
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public:
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struct X86Operand;
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private:
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AsmLexer Lexer;
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MCContext &Ctx;
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MCStreamer &Out;
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struct X86Operand;
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public:
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AsmParser(SourceMgr &SM, MCContext &ctx, MCStreamer &OutStr)
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: Lexer(SM), Ctx(ctx), Out(OutStr) {}
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@ -76,7 +78,7 @@ private:
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bool ParseParenExpr(AsmExpr *&Res);
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// X86 specific.
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bool ParseX86InstOperands(MCInst &Inst);
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bool ParseX86InstOperands(const char *InstName, MCInst &Inst);
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bool ParseX86Operand(X86Operand &Op);
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bool ParseX86MemOperand(X86Operand &Op);
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@ -65,10 +65,6 @@ struct AsmParser::X86Operand {
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Res.Mem.ScaleReg = ScaleReg;
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return Res;
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}
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void AddToMCInst(MCInst &I) {
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// FIXME: Add in x86 order here.
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}
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};
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bool AsmParser::ParseX86Operand(X86Operand &Op) {
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@ -195,27 +191,34 @@ bool AsmParser::ParseX86MemOperand(X86Operand &Op) {
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return false;
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}
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/// ParseX86InstOperands - Parse the operands of an X86 instruction and return
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/// them as the operands of an MCInst.
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bool AsmParser::ParseX86InstOperands(MCInst &Inst) {
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// If no operands are present, just return.
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if (Lexer.is(asmtok::EndOfStatement))
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return false;
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// Read the first operand.
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X86Operand Op;
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if (ParseX86Operand(Op))
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return true;
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Op.AddToMCInst(Inst);
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while (Lexer.is(asmtok::Comma)) {
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Lexer.Lex(); // Eat the comma.
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// Parse and remember the operand.
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Op = X86Operand();
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if (ParseX86Operand(Op))
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return true;
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Op.AddToMCInst(Inst);
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}
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/// MatchX86Inst - Convert a parsed instruction name and operand list into a
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/// concrete instruction.
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static bool MatchX86Inst(const char *Name,
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llvm::SmallVector<AsmParser::X86Operand, 3> &Operands,
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MCInst &Inst) {
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return false;
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}
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/// ParseX86InstOperands - Parse the operands of an X86 instruction and return
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/// them as the operands of an MCInst.
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bool AsmParser::ParseX86InstOperands(const char *InstName, MCInst &Inst) {
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llvm::SmallVector<X86Operand, 3> Operands;
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if (Lexer.isNot(asmtok::EndOfStatement)) {
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// Read the first operand.
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Operands.push_back(X86Operand());
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if (ParseX86Operand(Operands.back()))
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return true;
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while (Lexer.is(asmtok::Comma)) {
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Lexer.Lex(); // Eat the comma.
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// Parse and remember the operand.
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Operands.push_back(X86Operand());
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if (ParseX86Operand(Operands.back()))
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return true;
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}
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}
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return MatchX86Inst(InstName, Operands, Inst);
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}
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