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https://github.com/c64scene-ar/llvm-6502.git
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0d1b7d9e3d
add support for darwin vs aix syntax. We now can print instructions like this: add r3, r3, r4 blr and (in aix mode): add 3, 3, 4 blr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119062 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
//===-- PPCInstPrinter.cpp - Convert PPC 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 PPC 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 "PPCInstPrinter.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/MCAsmInfo.h"
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//#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/raw_ostream.h"
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#include "PPCGenRegisterNames.inc"
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#include "PPCGenInstrNames.inc"
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using namespace llvm;
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#define GET_INSTRUCTION_NAME
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#define PPCAsmPrinter PPCInstPrinter
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#define MachineInstr MCInst
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#include "PPCGenAsmWriter.inc"
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StringRef PPCInstPrinter::getOpcodeName(unsigned Opcode) const {
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return getInstructionName(Opcode);
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}
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void PPCInstPrinter::printInst(const MCInst *MI, raw_ostream &O) {
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// TODO: pseudo ops.
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printInstruction(MI, O);
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}
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/// stripRegisterPrefix - This method strips the character prefix from a
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/// register name so that only the number is left. Used by for linux asm.
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const char *stripRegisterPrefix(const char *RegName) {
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switch (RegName[0]) {
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case 'r':
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case 'f':
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case 'v': return RegName + 1;
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case 'c': if (RegName[1] == 'r') return RegName + 2;
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}
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return RegName;
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}
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void PPCInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
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raw_ostream &O) {
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const MCOperand &Op = MI->getOperand(OpNo);
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if (Op.isReg()) {
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const char *RegName = getRegisterName(Op.getReg());
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// The linux and AIX assembler does not take register prefixes.
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if (!isDarwinSyntax())
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RegName = stripRegisterPrefix(RegName);
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O << RegName;
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return;
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}
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if (Op.isImm()) {
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O << Op.getImm();
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return;
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}
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assert(Op.isExpr() && "unknown operand kind in printOperand");
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O << *Op.getExpr();
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}
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