lib/Target/MBlaze/InstPrinter/MBlazeInstPrinter.cpp

   1 //===-- MBlazeInstPrinter.cpp - Convert MBlaze MCInst to assembly syntax --===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This class prints an MBlaze MCInst to a .s file.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #define DEBUG_TYPE "asm-printer"
  15 #include "MBlaze.h"
  16 #include "MBlazeInstPrinter.h"
  17 #include "llvm/MC/MCInst.h"
  18 #include "llvm/MC/MCAsmInfo.h"
  19 #include "llvm/MC/MCExpr.h"
  20 #include "llvm/Support/ErrorHandling.h"
  21 #include "llvm/Support/FormattedStream.h"
  22 using namespace llvm;
  23
  24
  25 // Include the auto-generated portion of the assembly writer.
  26 #include "MBlazeGenAsmWriter.inc"
  27
  28 void MBlazeInstPrinter::printInst(const MCInst *MI, raw_ostream &O) {
  29   printInstruction(MI, O);
  30 }
  31
  32 void MBlazeInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
  33                                      raw_ostream &O, const char *Modifier) {
  34   assert((Modifier == 0 || Modifier[0] == 0) && "No modifiers supported");
  35   const MCOperand &Op = MI->getOperand(OpNo);
  36   if (Op.isReg()) {
  37     O << getRegisterName(Op.getReg());
  38   } else if (Op.isImm()) {
  39     O << (int32_t)Op.getImm();
  40   } else {
  41     assert(Op.isExpr() && "unknown operand kind in printOperand");
  42     O << *Op.getExpr();
  43   }
  44 }
  45
  46 void MBlazeInstPrinter::printFSLImm(const MCInst *MI, int OpNo,
  47                                     raw_ostream &O) {
  48   const MCOperand &MO = MI->getOperand(OpNo);
  49   if (MO.isImm())
  50     O << "rfsl" << MO.getImm();
  51   else
  52     printOperand(MI, OpNo, O, NULL);
  53 }
  54
  55 void MBlazeInstPrinter::printUnsignedImm(const MCInst *MI, int OpNo,
  56                                         raw_ostream &O) {
  57   const MCOperand &MO = MI->getOperand(OpNo);
  58   if (MO.isImm())
  59     O << (uint32_t)MO.getImm();
  60   else
  61     printOperand(MI, OpNo, O, NULL);
  62 }
  63
  64 void MBlazeInstPrinter::printMemOperand(const MCInst *MI, int OpNo,
  65                                         raw_ostream &O, const char *Modifier) {
  66   printOperand(MI, OpNo, O, NULL);
  67   O << ", ";
  68   printOperand(MI, OpNo+1, O, NULL);
  69 }