2009-10-19 21:56:26 +02:00
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//===-- ARMInstPrinter.cpp - Convert ARM 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 ARM 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 "ARMInstPrinter.h"
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2009-10-19 23:21:39 +02:00
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#include "ARMAddressingModes.h"
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2009-10-19 21:56:26 +02:00
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#include "llvm/MC/MCInst.h"
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2009-10-19 23:21:39 +02:00
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#include "llvm/MC/MCAsmInfo.h"
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2009-10-19 21:56:26 +02:00
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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 "ARMGenInstrNames.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 ARMAsmPrinter ARMInstPrinter // FIXME: REMOVE.
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#define NO_ASM_WRITER_BOILERPLATE
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#include "ARMGenAsmWriter.inc"
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#undef MachineInstr
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#undef ARMAsmPrinter
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void ARMInstPrinter::printInst(const MCInst *MI) { printInstruction(MI); }
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2009-10-19 22:59:55 +02:00
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void ARMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
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const char *Modifier) {
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assert((Modifier == 0 || Modifier[0] == 0) && "Cannot print modifiers");
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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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assert(0 && "UNIMP");
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//O << '$';
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//Op.getExpr()->print(O, &MAI);
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}
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}
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2009-10-19 23:21:39 +02:00
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static void printSOImm(raw_ostream &O, int64_t V, bool VerboseAsm,
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const MCAsmInfo *MAI) {
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// Break it up into two parts that make up a shifter immediate.
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V = ARM_AM::getSOImmVal(V);
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assert(V != -1 && "Not a valid so_imm value!");
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unsigned Imm = ARM_AM::getSOImmValImm(V);
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unsigned Rot = ARM_AM::getSOImmValRot(V);
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// Print low-level immediate formation info, per
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// A5.1.3: "Data-processing operands - Immediate".
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if (Rot) {
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O << "#" << Imm << ", " << Rot;
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// Pretty printed version.
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if (VerboseAsm)
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O << ' ' << MAI->getCommentString()
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<< ' ' << (int)ARM_AM::rotr32(Imm, Rot);
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} else {
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O << "#" << Imm;
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}
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}
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/// printSOImmOperand - SOImm is 4-bit rotate amount in bits 8-11 with 8-bit
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/// immediate in bits 0-7.
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void ARMInstPrinter::printSOImmOperand(const MCInst *MI, unsigned OpNum) {
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const MCOperand &MO = MI->getOperand(OpNum);
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assert(MO.isImm() && "Not a valid so_imm value!");
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printSOImm(O, MO.getImm(), VerboseAsm, &MAI);
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}
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