87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
//===-- RISCVInstPrinter.cpp - Convert RISCV MCInst to asm syntax ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class prints an RISCV MCInst to a .s file.
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//
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//===----------------------------------------------------------------------===//
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#include "RISCVInstPrinter.h"
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#include "MCTargetDesc/RISCVBaseInfo.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/FormattedStream.h"
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using namespace llvm;
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#define DEBUG_TYPE "asm-printer"
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// Include the auto-generated portion of the assembly writer.
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#define PRINT_ALIAS_INSTR
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#include "RISCVGenAsmWriter.inc"
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static cl::opt<bool>
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NoAliases("riscv-no-aliases",
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cl::desc("Disable the emission of assembler pseudo instructions"),
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cl::init(false),
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cl::Hidden);
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void RISCVInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
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StringRef Annot, const MCSubtargetInfo &STI) {
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if (NoAliases || !printAliasInstr(MI, O))
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printInstruction(MI, O);
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printAnnotation(O, Annot);
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}
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void RISCVInstPrinter::printRegName(raw_ostream &O, unsigned RegNo) const {
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O << getRegisterName(RegNo);
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}
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void RISCVInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
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raw_ostream &O, const char *Modifier) {
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assert((Modifier == 0 || Modifier[0] == 0) && "No modifiers supported");
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const MCOperand &MO = MI->getOperand(OpNo);
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if (MO.isReg()) {
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printRegName(O, MO.getReg());
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return;
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}
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if (MO.isImm()) {
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O << MO.getImm();
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return;
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}
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assert(MO.isExpr() && "Unknown operand kind in printOperand");
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MO.getExpr()->print(O, &MAI);
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}
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void RISCVInstPrinter::printFenceArg(const MCInst *MI, unsigned OpNo,
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raw_ostream &O) {
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unsigned FenceArg = MI->getOperand(OpNo).getImm();
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if ((FenceArg & RISCVFenceField::I) != 0)
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O << 'i';
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if ((FenceArg & RISCVFenceField::O) != 0)
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O << 'o';
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if ((FenceArg & RISCVFenceField::R) != 0)
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O << 'r';
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if ((FenceArg & RISCVFenceField::W) != 0)
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O << 'w';
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}
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void RISCVInstPrinter::printFRMArg(const MCInst *MI, unsigned OpNo,
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raw_ostream &O) {
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auto FRMArg =
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static_cast<RISCVFPRndMode::RoundingMode>(MI->getOperand(OpNo).getImm());
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O << RISCVFPRndMode::roundingModeToString(FRMArg);
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}
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