MSP430InstPrinter.cpp revision d0669493b8d42544a94bddcd94d635e0701f6415
17d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn//===-- MSP430InstPrinter.cpp - Convert MSP430 MCInst to assembly syntax --===// 27d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// 37d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// The LLVM Compiler Infrastructure 47d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// 57d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// This file is distributed under the University of Illinois Open Source 67d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// License. See LICENSE.TXT for details. 77d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// 87d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn//===----------------------------------------------------------------------===// 97d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// 107d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// This class prints an MSP430 MCInst to a .s file. 117d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// 127d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn//===----------------------------------------------------------------------===// 137d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 147d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#define DEBUG_TYPE "asm-printer" 157d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "MSP430.h" 167d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "MSP430InstrInfo.h" 177d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "MSP430InstPrinter.h" 187d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "llvm/MC/MCInst.h" 197d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "llvm/MC/MCAsmInfo.h" 207d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "llvm/MC/MCExpr.h" 217d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "llvm/Support/ErrorHandling.h" 227d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "llvm/Support/FormattedStream.h" 237d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackbornusing namespace llvm; 247d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 257d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 267d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn// Include the auto-generated portion of the assembly writer. 277d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn#include "MSP430GenAsmWriter.inc" 287d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 297d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackbornvoid MSP430InstPrinter::printInst(const MCInst *MI, raw_ostream &O) { 307d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn printInstruction(MI, O); 317d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn} 327d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 337d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackbornvoid MSP430InstPrinter::printPCRelImmOperand(const MCInst *MI, unsigned OpNo, 347d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn raw_ostream &O) { 357d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn const MCOperand &Op = MI->getOperand(OpNo); 367d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn if (Op.isImm()) 377d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << Op.getImm(); 387d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn else { 39e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn assert(Op.isExpr() && "unknown pcrel immediate operand"); 407d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << *Op.getExpr(); 41f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn } 42e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn} 43e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn 44e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackbornvoid MSP430InstPrinter::printOperand(const MCInst *MI, unsigned OpNo, 45f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn raw_ostream &O, const char *Modifier) { 46f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn assert((Modifier == 0 || Modifier[0] == 0) && "No modifiers supported"); 47f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn const MCOperand &Op = MI->getOperand(OpNo); 48f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn if (Op.isReg()) { 49f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn O << getRegisterName(Op.getReg()); 50f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn } else if (Op.isImm()) { 51f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn O << '#' << Op.getImm(); 52f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn } else { 53f35fe23669aeeebd2db2acb6baacae503dba03a8Dianne Hackborn assert(Op.isExpr() && "unknown operand kind in printOperand"); 547d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << '#' << *Op.getExpr(); 557d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn } 567d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn} 577d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 587d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackbornvoid MSP430InstPrinter::printSrcMemOperand(const MCInst *MI, unsigned OpNo, 597d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn raw_ostream &O, 60e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn const char *Modifier) { 61e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn const MCOperand &Base = MI->getOperand(OpNo); 62e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn const MCOperand &Disp = MI->getOperand(OpNo+1); 637d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 647d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // Print displacement first 657d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 667d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // If the global address expression is a part of displacement field with a 677d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // register base, we should not emit any prefix symbol here, e.g. 687d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // mov.w &foo, r1 697d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // vs 707d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // mov.w glb(r1), r2 717d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // Otherwise (!) msp430-as will silently miscompile the output :( 727d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn if (!Base.getReg()) 737d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << '&'; 747d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 75e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn if (Disp.isExpr()) 767d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << *Disp.getExpr(); 777d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn else { 787d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn assert(Disp.isImm() && "Expected immediate in displacement field"); 79e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn O << Disp.getImm(); 807d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn } 817d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 827d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn // Print register base field 83e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn if (Base.getReg()) 847d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << '(' << getRegisterName(Base.getReg()) << ')'; 857d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn} 86e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn 877d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackbornvoid MSP430InstPrinter::printCCOperand(const MCInst *MI, unsigned OpNo, 88e02c88af7935c72fb90a478375e61e4a94465587Dianne Hackborn raw_ostream &O) { 897d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn unsigned CC = MI->getOperand(OpNo).getImm(); 907d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn 917d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn switch (CC) { 927d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn default: 937d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn llvm_unreachable("Unsupported CC code"); 947d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn break; 957d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn case MSP430CC::COND_E: 967d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << "eq"; 977d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn break; 987d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn case MSP430CC::COND_NE: 997d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << "ne"; 1007d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn break; 1017d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn case MSP430CC::COND_HS: 1027d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << "hs"; 1037d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn break; 1047d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn case MSP430CC::COND_LO: 1057d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << "lo"; 1067d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn break; 1077d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn case MSP430CC::COND_GE: 1087d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << "ge"; 1097d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn break; 1107d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn case MSP430CC::COND_L: 1117d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn O << 'l'; 1127d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn break; 1137d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn } 1147d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn} 1157d608423b721e0153f37bfd5eba78fcd2489562dDianne Hackborn