path: root/lib/Target/Mips/AsmParser/MipsAsmParser.cpp

//===-- MipsAsmParser.cpp - Parse Mips assembly to MCInst instructions ----===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "MCTargetDesc/MipsMCTargetDesc.h"
#include "MipsRegisterInfo.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCParser/MCAsmLexer.h"
#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCTargetAsmParser.h"
#include "llvm/Support/TargetRegistry.h"

using namespace llvm;

namespace {
class MipsAssemblerOptions {
public:
  MipsAssemblerOptions():
    aTReg(1), reorder(true), macro(true) {
  }

  unsigned getATRegNum() {return aTReg;}
  bool setATReg(unsigned Reg);

  bool isReorder() {return reorder;}
  void setReorder() {reorder = true;}
  void setNoreorder() {reorder = false;}

  bool isMacro() {return macro;}
  void setMacro() {macro = true;}
  void setNomacro() {macro = false;}

private:
  unsigned aTReg;
  bool reorder;
  bool macro;
};
}

namespace {
class MipsAsmParser : public MCTargetAsmParser {

  enum FpFormatTy {
    FP_FORMAT_NONE = -1,
    FP_FORMAT_S,
    FP_FORMAT_D,
    FP_FORMAT_L,
    FP_FORMAT_W
  } FpFormat;

  MCSubtargetInfo &STI;
  MCAsmParser &Parser;
  MipsAssemblerOptions Options;


#define GET_ASSEMBLER_HEADER
#include "MipsGenAsmMatcher.inc"

  bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
                               SmallVectorImpl<MCParsedAsmOperand*> &Operands,
                               MCStreamer &Out, unsigned &ErrorInfo,
                               bool MatchingInlineAsm