mirror of
https://github.com/c64scene-ar/llvm-6502.git
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efa236f40d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84707 91177308-0d34-0410-b5e6-96231b3b80d8
78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
//===-- MSP430InstPrinter.cpp - Convert MSP430 MCInst to assembly 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 MSP430 MCInst to a .s file.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "asm-printer"
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#include "MSP430InstPrinter.h"
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#include "llvm/MC/MCInst.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/Support/ErrorHandling.h"
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#include "llvm/Support/FormattedStream.h"
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#include "MSP430GenInstrNames.inc"
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using namespace llvm;
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// Include the auto-generated portion of the assembly writer.
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#define MachineInstr MCInst
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#define MSP430AsmPrinter MSP430InstPrinter // FIXME: REMOVE.
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#define NO_ASM_WRITER_BOILERPLATE
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#include "MSP430GenAsmWriter.inc"
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#undef MachineInstr
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#undef MSP430AsmPrinter
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void MSP430InstPrinter::printInst(const MCInst *MI) {
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printInstruction(MI);
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}
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void MSP430InstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
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const char *Modifier) {
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const MCOperand &Op = MI->getOperand(OpNo);
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if (Op.isReg()) {
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O << getRegisterName(Op.getReg());
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} else if (Op.isImm()) {
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O << '#' << Op.getImm();
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} else {
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assert(Op.isExpr() && "unknown operand kind in printOperand");
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bool isMemOp = Modifier && !strcmp(Modifier, "mem");
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O << (isMemOp ? '&' : '#');
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Op.getExpr()->print(O, &MAI);
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}
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}
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void MSP430InstPrinter::printSrcMemOperand(const MCInst *MI, unsigned OpNo,
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const char *Modifier) {
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const MCOperand &Base = MI->getOperand(OpNo);
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const MCOperand &Disp = MI->getOperand(OpNo+1);
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// FIXME: move global to displacement field!
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if (Base.isExpr())
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printOperand(MI, OpNo, "mem");
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else if (Disp.isImm() && !Base.isReg())
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printOperand(MI, OpNo);
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else if (Base.isReg()) {
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if (Disp.getImm()) {
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O << Disp.getImm() << '(';
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printOperand(MI, OpNo);
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O << ')';
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} else {
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O << '@';
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printOperand(MI, OpNo);
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}
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} else {
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Base.dump();
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Disp.dump();
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llvm_unreachable("Unsupported memory operand");
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}
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}
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