| //===- LoongArchInstPrinter.cpp - Convert LoongArch MCInst to asm syntax --===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This class prints an LoongArch MCInst to a .s file. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LoongArchInstPrinter.h" |
| #include "LoongArchBaseInfo.h" |
| #include "LoongArchMCTargetDesc.h" |
| #include "llvm/MC/MCAsmInfo.h" |
| #include "llvm/MC/MCInst.h" |
| #include "llvm/MC/MCRegisterInfo.h" |
| #include "llvm/MC/MCSubtargetInfo.h" |
| #include "llvm/MC/MCSymbol.h" |
| #include "llvm/Support/CommandLine.h" |
| using namespace llvm; |
| |
| #define DEBUG_TYPE "loongarch-asm-printer" |
| |
| // Include the auto-generated portion of the assembly writer. |
| #define PRINT_ALIAS_INSTR |
| #include "LoongArchGenAsmWriter.inc" |
| |
| static cl::opt<bool> |
| NumericReg("loongarch-numeric-reg", |
| cl::desc("Print numeric register names rather than the ABI " |
| "names (such as $r0 instead of $zero)"), |
| cl::init(false), cl::Hidden); |
| |
| // The command-line flag above is used by llvm-mc and llc. It can be used by |
| // `llvm-objdump`, but we override the value here to handle options passed to |
| // `llvm-objdump` with `-M` (which matches GNU objdump). There did not seem to |
| // be an easier way to allow these options in all these tools, without doing it |
| // this way. |
| bool LoongArchInstPrinter::applyTargetSpecificCLOption(StringRef Opt) { |
| if (Opt == "numeric") { |
| NumericReg = true; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void LoongArchInstPrinter::printInst(const MCInst *MI, uint64_t Address, |
| StringRef Annot, |
| const MCSubtargetInfo &STI, |
| raw_ostream &O) { |
| if (!printAliasInstr(MI, Address, STI, O)) |
| printInstruction(MI, Address, STI, O); |
| printAnnotation(O, Annot); |
| } |
| |
| void LoongArchInstPrinter::printRegName(raw_ostream &O, MCRegister Reg) const { |
| O << '$' << getRegisterName(Reg); |
| } |
| |
| void LoongArchInstPrinter::printOperand(const MCInst *MI, unsigned OpNo, |
| const MCSubtargetInfo &STI, |
| raw_ostream &O) { |
| const MCOperand &MO = MI->getOperand(OpNo); |
| |
| if (MO.isReg()) { |
| printRegName(O, MO.getReg()); |
| return; |
| } |
| |
| if (MO.isImm()) { |
| O << MO.getImm(); |
| return; |
| } |
| |
| assert(MO.isExpr() && "Unknown operand kind in printOperand"); |
| MO.getExpr()->print(O, &MAI); |
| } |
| |
| void LoongArchInstPrinter::printAtomicMemOp(const MCInst *MI, unsigned OpNo, |
| const MCSubtargetInfo &STI, |
| raw_ostream &O) { |
| const MCOperand &MO = MI->getOperand(OpNo); |
| assert(MO.isReg() && "printAtomicMemOp can only print register operands"); |
| printRegName(O, MO.getReg()); |
| } |
| |
| const char *LoongArchInstPrinter::getRegisterName(MCRegister Reg) { |
| // Default print reg alias name |
| return getRegisterName(Reg, NumericReg ? LoongArch::NoRegAltName |
| : LoongArch::RegAliasName); |
| } |