1 //===- HexagonInstPrinter.cpp - Convert Hexagon MCInst to assembly syntax -===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This class prints an Hexagon MCInst to a .s file.
12 //===----------------------------------------------------------------------===//
14 #include "HexagonInstPrinter.h"
15 #include "HexagonAsmPrinter.h"
16 #include "MCTargetDesc/HexagonBaseInfo.h"
17 #include "MCTargetDesc/HexagonMCInstrInfo.h"
18 #include "llvm/MC/MCAsmInfo.h"
19 #include "llvm/MC/MCExpr.h"
20 #include "llvm/MC/MCInst.h"
21 #include "llvm/Support/Debug.h"
22 #include "llvm/Support/raw_ostream.h"
26 #define DEBUG_TYPE "asm-printer"
28 #define GET_INSTRUCTION_NAME
29 #include "HexagonGenAsmWriter.inc"
31 HexagonInstPrinter::HexagonInstPrinter(MCAsmInfo const &MAI,
32 MCInstrInfo const &MII,
33 MCRegisterInfo const &MRI)
34 : MCInstPrinter(MAI, MII, MRI), MII(MII), HasExtender(false) {
37 StringRef HexagonInstPrinter::getOpcodeName(unsigned Opcode) const {
38 return MII.getName(Opcode);
41 void HexagonInstPrinter::printRegName(raw_ostream &O, unsigned RegNo) const {
42 O << getRegName(RegNo);
45 StringRef HexagonInstPrinter::getRegName(unsigned RegNo) const {
46 return getRegisterName(RegNo);
49 void HexagonInstPrinter::setExtender(MCInst const &MCI) {
50 HasExtender = HexagonMCInstrInfo::isImmext(MCI);
53 void HexagonInstPrinter::printInst(const MCInst *MI, raw_ostream &OS,
54 StringRef Annot, const MCSubtargetInfo &STI) {
55 assert(HexagonMCInstrInfo::isBundle(*MI));
56 assert(HexagonMCInstrInfo::bundleSize(*MI) <= HEXAGON_PACKET_SIZE);
57 assert(HexagonMCInstrInfo::bundleSize(*MI) > 0);
59 for (auto const &I : HexagonMCInstrInfo::bundleInstructions(*MI)) {
60 MCInst const &MCI = *I.getInst();
61 if (HexagonMCInstrInfo::isDuplex(MII, MCI)) {
62 printInstruction(MCI.getOperand(1).getInst(), OS);
65 printInstruction(MCI.getOperand(0).getInst(), OS);
67 printInstruction(&MCI, OS);
72 bool IsLoop0 = HexagonMCInstrInfo::isInnerLoop(*MI);
73 bool IsLoop1 = HexagonMCInstrInfo::isOuterLoop(*MI);
75 OS << (IsLoop1 ? " :endloop01" : " :endloop0");
81 void HexagonInstPrinter::printOperand(MCInst const *MI, unsigned OpNo,
82 raw_ostream &O) const {
83 if (HexagonMCInstrInfo::getExtendableOp(MII, *MI) == OpNo &&
84 (HasExtender || HexagonMCInstrInfo::isConstExtended(MII, *MI)))
86 MCOperand const &MO = MI->getOperand(OpNo);
88 O << getRegisterName(MO.getReg());
89 } else if (MO.isExpr()) {
91 if (MO.getExpr()->evaluateAsAbsolute(Value))
92 O << formatImm(Value);
96 llvm_unreachable("Unknown operand");
100 void HexagonInstPrinter::printExtOperand(MCInst const *MI, unsigned OpNo,
101 raw_ostream &O) const {
102 printOperand(MI, OpNo, O);
105 void HexagonInstPrinter::printUnsignedImmOperand(MCInst const *MI,
107 raw_ostream &O) const {
108 O << MI->getOperand(OpNo).getImm();
111 void HexagonInstPrinter::printNegImmOperand(MCInst const *MI, unsigned OpNo,
112 raw_ostream &O) const {
113 O << -MI->getOperand(OpNo).getImm();
116 void HexagonInstPrinter::printNOneImmOperand(MCInst const *MI, unsigned OpNo,
117 raw_ostream &O) const {
121 void HexagonInstPrinter::printGlobalOperand(MCInst const *MI, unsigned OpNo,
122 raw_ostream &O) const {
123 printOperand(MI, OpNo, O);
126 void HexagonInstPrinter::printJumpTable(MCInst const *MI, unsigned OpNo,
127 raw_ostream &O) const {
128 assert(MI->getOperand(OpNo).isExpr() && "Expecting expression");
130 printOperand(MI, OpNo, O);
133 void HexagonInstPrinter::printConstantPool(MCInst const *MI, unsigned OpNo,
134 raw_ostream &O) const {
135 assert(MI->getOperand(OpNo).isExpr() && "Expecting expression");
137 printOperand(MI, OpNo, O);
140 void HexagonInstPrinter::printBranchOperand(MCInst const *MI, unsigned OpNo,
141 raw_ostream &O) const {
142 // Branches can take an immediate operand. This is used by the branch
143 // selection pass to print $+8, an eight byte displacement from the PC.
144 llvm_unreachable("Unknown branch operand.");
147 void HexagonInstPrinter::printCallOperand(MCInst const *MI, unsigned OpNo,
148 raw_ostream &O) const {}
150 void HexagonInstPrinter::printAbsAddrOperand(MCInst const *MI, unsigned OpNo,
151 raw_ostream &O) const {}
153 void HexagonInstPrinter::printPredicateOperand(MCInst const *MI, unsigned OpNo,
154 raw_ostream &O) const {}
156 void HexagonInstPrinter::printSymbol(MCInst const *MI, unsigned OpNo,
157 raw_ostream &O, bool hi) const {
158 assert(MI->getOperand(OpNo).isImm() && "Unknown symbol operand");
160 O << '#' << (hi ? "HI" : "LO") << '(';
162 printOperand(MI, OpNo, O);
166 void HexagonInstPrinter::printBrtarget(MCInst const *MI, unsigned OpNo,
167 raw_ostream &O) const {
168 MCOperand const &MO = MI->getOperand(OpNo);
169 assert (MO.isExpr());
170 MCExpr const &Expr = *MO.getExpr();
172 if (Expr.evaluateAsAbsolute(Value))
173 O << format("0x%" PRIx64, Value);
175 if (HasExtender || HexagonMCInstrInfo::isConstExtended(MII, *MI))
176 if (HexagonMCInstrInfo::getExtendableOp(MII, *MI) == OpNo)