1 //===- LoongArchInstPrinter.cpp - Convert LoongArch MCInst to asm syntax --===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This class prints an LoongArch MCInst to a .s file.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "LoongArchInstPrinter.h"
14 #include "LoongArchBaseInfo.h"
15 #include "llvm/MC/MCAsmInfo.h"
16 #include "llvm/MC/MCInst.h"
17 #include "llvm/MC/MCRegisterInfo.h"
18 #include "llvm/MC/MCSubtargetInfo.h"
19 #include "llvm/MC/MCSymbol.h"
20 using namespace llvm;
21
22 #define DEBUG_TYPE "loongarch-asm-printer"
23
24 // Include the auto-generated portion of the assembly writer.
25 #define PRINT_ALIAS_INSTR
26 #include "LoongArchGenAsmWriter.inc"
27
printInst(const MCInst * MI,uint64_t Address,StringRef Annot,const MCSubtargetInfo & STI,raw_ostream & O)28 void LoongArchInstPrinter::printInst(const MCInst *MI, uint64_t Address,
29 StringRef Annot,
30 const MCSubtargetInfo &STI,
31 raw_ostream &O) {
32 if (!printAliasInstr(MI, Address, STI, O))
33 printInstruction(MI, Address, STI, O);
34 printAnnotation(O, Annot);
35 }
36
printRegName(raw_ostream & O,unsigned RegNo) const37 void LoongArchInstPrinter::printRegName(raw_ostream &O, unsigned RegNo) const {
38 O << '$' << getRegisterName(RegNo);
39 }
40
printOperand(const MCInst * MI,unsigned OpNo,const MCSubtargetInfo & STI,raw_ostream & O)41 void LoongArchInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
42 const MCSubtargetInfo &STI,
43 raw_ostream &O) {
44 const MCOperand &MO = MI->getOperand(OpNo);
45
46 if (MO.isReg()) {
47 printRegName(O, MO.getReg());
48 return;
49 }
50
51 if (MO.isImm()) {
52 O << MO.getImm();
53 return;
54 }
55
56 assert(MO.isExpr() && "Unknown operand kind in printOperand");
57 MO.getExpr()->print(O, &MAI);
58 }
59
getRegisterName(unsigned RegNo)60 const char *LoongArchInstPrinter::getRegisterName(unsigned RegNo) {
61 // Default print reg alias name
62 return getRegisterName(RegNo, LoongArch::RegAliasName);
63 }
64