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llvm-6502/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
Bob Wilson d4bfd54ec2 Change ARM VFP VLDM/VSTM instructions to use addressing mode #4, just like 
all the other LDM/STM instructions.  This fixes asm printer crashes when
compiling with -O0.  I've changed one of the NEON tests (vst3.ll) to run
with -O0 to check this in the future.

Prior to this change VLDM/VSTM used addressing mode #5, but not really.
The offset field was used to hold a count of the number of registers being
loaded or stored, and the AM5 opcode field was expanded to specify the IA
or DB mode, instead of the standard ADD/SUB specifier.  Much of the backend
was not aware of these special cases.  The crashes occured when rewriting
a frameindex caused the AM5 offset field to be changed so that it did not
have a valid submode.  I don't know exactly what changed to expose this now.
Maybe we've never done much with -O0 and NEON.  Regardless, there's no longer
any reason to keep a count of the VLDM/VSTM registers, so we can use
addressing mode #4 and clean things up in a lot of places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112322 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-27 23:18:17 +00:00

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//===-- ARMInstPrinter.cpp - Convert ARM MCInst to assembly syntax --------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class prints an ARM MCInst to a .s file.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "asm-printer"
#include "ARM.h" // FIXME: FACTOR ENUMS BETTER.
#include "ARMInstPrinter.h"
#include "ARMAddressingModes.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
// Include the auto-generated portion of the assembly writer.
#define MachineInstr MCInst
#define ARMAsmPrinter ARMInstPrinter // FIXME: REMOVE.
#include "ARMGenAsmWriter.inc"
#undef MachineInstr
#undef ARMAsmPrinter
static unsigned NextReg(unsigned Reg) {
switch (Reg) {
default:
assert(0 && "Unexpected register enum");
case ARM::D0:
return ARM::D1;
case ARM::D1:
return ARM::D2;
case ARM::D2:
return ARM::D3;
case ARM::D3:
return ARM::D4;
case ARM::D4:
return ARM::D5;
case ARM::D5:
return ARM::D6;
case ARM::D6:
return ARM::D7;
case ARM::D7:
return ARM::D8;
case ARM::D8:
return ARM::D9;
case ARM::D9:
return ARM::D10;
case ARM::D10:
return ARM::D11;
case ARM::D11:
return ARM::D12;
case ARM::D12:
return ARM::D13;
case ARM::D13:
return ARM::D14;
case ARM::D14:
return ARM::D15;
case ARM::D15:
return ARM::D16;
case ARM::D16:
return ARM::D17;
case ARM::D17:
return ARM::D18;
case ARM::D18:
return ARM::D19;
case ARM::D19:
return ARM::D20;
case ARM::D20:
return ARM::D21;
case ARM::D21:
return ARM::D22;
case ARM::D22:
return ARM::D23;
case ARM::D23:
return ARM::D24;
case ARM::D24:
return ARM::D25;
case ARM::D25:
return ARM::D26;
case ARM::D26:
return ARM::D27;
case ARM::D27:
return ARM::D28;
case ARM::D28:
return ARM::D29;
case ARM::D29:
return ARM::D30;
case ARM::D30:
return ARM::D31;
}
}
void ARMInstPrinter::printInst(const MCInst *MI, raw_ostream &O) {
// Check for MOVs and print canonical forms, instead.
if (MI->getOpcode() == ARM::MOVs) {
const MCOperand &Dst = MI->getOperand(0);
const MCOperand &MO1 = MI->getOperand(1);
const MCOperand &MO2 = MI->getOperand(2);
const MCOperand &MO3 = MI->getOperand(3);
O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO3.getImm()));
printSBitModifierOperand(MI, 6, O);
printPredicateOperand(MI, 4, O);
O << '\t' << getRegisterName(Dst.getReg())
<< ", " << getRegisterName(MO1.getReg());
if (ARM_AM::getSORegShOp(MO3.getImm()) == ARM_AM::rrx)
return;
O << ", ";
if (MO2.getReg()) {
O << getRegisterName(MO2.getReg());
assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
} else {
O << "#" << ARM_AM::getSORegOffset(MO3.getImm());
}
return;
}
// A8.6.123 PUSH
if ((MI->getOpcode() == ARM::STM_UPD || MI->getOpcode() == ARM::t2STM_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::db) {
O << '\t' << "push";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
}
// A8.6.122 POP
if ((MI->getOpcode() == ARM::LDM_UPD || MI->getOpcode() == ARM::t2LDM_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::ia) {
O << '\t' << "pop";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
}
// A8.6.355 VPUSH
if ((MI->getOpcode() == ARM::VSTMS_UPD || MI->getOpcode() ==ARM::VSTMD_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::db) {
O << '\t' << "vpush";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
}
// A8.6.354 VPOP
if ((MI->getOpcode() == ARM::VLDMS_UPD || MI->getOpcode() ==ARM::VLDMD_UPD) &&
MI->getOperand(0).getReg() == ARM::SP) {
const MCOperand &MO1 = MI->getOperand(2);
if (ARM_AM::getAM4SubMode(MO1.getImm()) == ARM_AM::ia) {
O << '\t' << "vpop";
printPredicateOperand(MI, 3, O);
O << '\t';
printRegisterList(MI, 5, O);
return;
}
}
printInstruction(MI, O);
}
void ARMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O, const char *Modifier) {
const MCOperand &Op = MI->getOperand(OpNo);
if (Op.isReg()) {
unsigned Reg = Op.getReg();
if (Modifier && strcmp(Modifier, "dregpair") == 0) {
O << '{' << getRegisterName(Reg) << ", "
<< getRegisterName(NextReg(Reg)) << '}';
#if 0
// FIXME: Breaks e.g. ARM/vmul.ll.
assert(0);
/*
unsigned DRegLo = TRI->getSubReg(Reg, ARM::dsub_0);
unsigned DRegHi = TRI->getSubReg(Reg, ARM::dsub_1);
O << '{'
<< getRegisterName(DRegLo) << ',' << getRegisterName(DRegHi)
<< '}';*/
#endif
} else if (Modifier && strcmp(Modifier, "lane") == 0) {
assert(0);
/*
unsigned RegNum = ARMRegisterInfo::getRegisterNumbering(Reg);
unsigned DReg = TRI->getMatchingSuperReg(Reg, RegNum & 1 ? 2 : 1,
&ARM::DPR_VFP2RegClass);
O << getRegisterName(DReg) << '[' << (RegNum & 1) << ']';
*/
} else {
O << getRegisterName(Reg);
}
} else if (Op.isImm()) {
assert((Modifier && !strcmp(Modifier, "call")) ||
((Modifier == 0 || Modifier[0] == 0) && "No modifiers supported"));
O << '#' << Op.getImm();
} else {
if (Modifier && Modifier[0] != 0 && strcmp(Modifier, "call") != 0)
llvm_unreachable("Unsupported modifier");
assert(Op.isExpr() && "unknown operand kind in printOperand");
O << *Op.getExpr();
}
}
static void printSOImm(raw_ostream &O, int64_t V, bool VerboseAsm,
const MCAsmInfo *MAI) {
// Break it up into two parts that make up a shifter immediate.
V = ARM_AM::getSOImmVal(V);
assert(V != -1 && "Not a valid so_imm value!");
unsigned Imm = ARM_AM::getSOImmValImm(V);
unsigned Rot = ARM_AM::getSOImmValRot(V);
// Print low-level immediate formation info, per
// A5.1.3: "Data-processing operands - Immediate".
if (Rot) {
O << "#" << Imm << ", " << Rot;
// Pretty printed version.
if (VerboseAsm)
O << ' ' << MAI->getCommentString()
<< ' ' << (int)ARM_AM::rotr32(Imm, Rot);
} else {
O << "#" << Imm;
}
}
/// printSOImmOperand - SOImm is 4-bit rotate amount in bits 8-11 with 8-bit
/// immediate in bits 0-7.
void ARMInstPrinter::printSOImmOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
assert(MO.isImm() && "Not a valid so_imm value!");
printSOImm(O, MO.getImm(), VerboseAsm, &MAI);
}
/// printSOImm2PartOperand - SOImm is broken into two pieces using a 'mov'
/// followed by an 'orr' to materialize.
void ARMInstPrinter::printSOImm2PartOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
// FIXME: REMOVE this method.
abort();
}
// so_reg is a 4-operand unit corresponding to register forms of the A5.1
// "Addressing Mode 1 - Data-processing operands" forms. This includes:
// REG 0 0 - e.g. R5
// REG REG 0,SH_OPC - e.g. R5, ROR R3
// REG 0 IMM,SH_OPC - e.g. R5, LSL #3
void ARMInstPrinter::printSORegOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
const MCOperand &MO3 = MI->getOperand(OpNum+2);
O << getRegisterName(MO1.getReg());
// Print the shift opc.
ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO3.getImm());
O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
if (MO2.getReg()) {
O << ' ' << getRegisterName(MO2.getReg());
assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
} else if (ShOpc != ARM_AM::rrx) {
O << " #" << ARM_AM::getSORegOffset(MO3.getImm());
}
}
void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op+1);
const MCOperand &MO3 = MI->getOperand(Op+2);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, Op, O);
return;
}
O << "[" << getRegisterName(MO1.getReg());
if (!MO2.getReg()) {
if (ARM_AM::getAM2Offset(MO3.getImm())) // Don't print +0.
O << ", #"
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
<< ARM_AM::getAM2Offset(MO3.getImm());
O << "]";
return;
}
O << ", "
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
<< getRegisterName(MO2.getReg());
if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
O << ", "
<< ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
<< " #" << ShImm;
O << "]";
}
void ARMInstPrinter::printAddrMode2OffsetOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
if (!MO1.getReg()) {
unsigned ImmOffs = ARM_AM::getAM2Offset(MO2.getImm());
O << '#'
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
<< ImmOffs;
return;
}
O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
<< getRegisterName(MO1.getReg());
if (unsigned ShImm = ARM_AM::getAM2Offset(MO2.getImm()))
O << ", "
<< ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO2.getImm()))
<< " #" << ShImm;
}
void ARMInstPrinter::printAddrMode3Operand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
const MCOperand &MO3 = MI->getOperand(OpNum+2);
O << '[' << getRegisterName(MO1.getReg());
if (MO2.getReg()) {
O << ", " << (char)ARM_AM::getAM3Op(MO3.getImm())
<< getRegisterName(MO2.getReg()) << ']';
return;
}
if (unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm()))
O << ", #"
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
<< ImmOffs;
O << ']';
}
void ARMInstPrinter::printAddrMode3OffsetOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
if (MO1.getReg()) {
O << (char)ARM_AM::getAM3Op(MO2.getImm())
<< getRegisterName(MO1.getReg());
return;
}
unsigned ImmOffs = ARM_AM::getAM3Offset(MO2.getImm());
O << '#'
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm()))
<< ImmOffs;
}
void ARMInstPrinter::printAddrMode4Operand(const MCInst *MI, unsigned OpNum,
raw_ostream &O,
const char *Modifier) {
const MCOperand &MO2 = MI->getOperand(OpNum+1);
ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
if (Modifier && strcmp(Modifier, "submode") == 0) {
O << ARM_AM::getAMSubModeStr(Mode);
} else if (Modifier && strcmp(Modifier, "wide") == 0) {
ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MO2.getImm());
if (Mode == ARM_AM::ia)
O << ".w";
} else {
printOperand(MI, OpNum, O);
}
}
void ARMInstPrinter::printAddrMode5Operand(const MCInst *MI, unsigned OpNum,
raw_ostream &O,
const char *Modifier) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, OpNum, O);
return;
}
O << "[" << getRegisterName(MO1.getReg());
if (unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm())) {
O << ", #"
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM5Op(MO2.getImm()))
<< ImmOffs*4;
}
O << "]";
}
void ARMInstPrinter::printAddrMode6Operand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
O << "[" << getRegisterName(MO1.getReg());
if (MO2.getImm()) {
// FIXME: Both darwin as and GNU as violate ARM docs here.
O << ", :" << (MO2.getImm() << 3);
}
O << "]";
}
void ARMInstPrinter::printAddrMode6OffsetOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
if (MO.getReg() == 0)
O << "!";
else
O << ", " << getRegisterName(MO.getReg());
}
void ARMInstPrinter::printAddrModePCOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O,
const char *Modifier) {
assert(0 && "FIXME: Implement printAddrModePCOperand");
}
void ARMInstPrinter::printBitfieldInvMaskImmOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
uint32_t v = ~MO.getImm();
int32_t lsb = CountTrailingZeros_32(v);
int32_t width = (32 - CountLeadingZeros_32 (v)) - lsb;
assert(MO.isImm() && "Not a valid bf_inv_mask_imm value!");
O << '#' << lsb << ", #" << width;
}
void ARMInstPrinter::printMemBOption(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
unsigned val = MI->getOperand(OpNum).getImm();
O << ARM_MB::MemBOptToString(val);
}
void ARMInstPrinter::printShiftImmOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
unsigned ShiftOp = MI->getOperand(OpNum).getImm();
ARM_AM::ShiftOpc Opc = ARM_AM::getSORegShOp(ShiftOp);
switch (Opc) {
case ARM_AM::no_shift:
return;
case ARM_AM::lsl:
O << ", lsl #";
break;
case ARM_AM::asr:
O << ", asr #";
break;
default:
assert(0 && "unexpected shift opcode for shift immediate operand");
}
O << ARM_AM::getSORegOffset(ShiftOp);
}
void ARMInstPrinter::printRegisterList(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
O << "{";
for (unsigned i = OpNum, e = MI->getNumOperands(); i != e; ++i) {
if (i != OpNum) O << ", ";
O << getRegisterName(MI->getOperand(i).getReg());
}
O << "}";
}
void ARMInstPrinter::printCPSOptionOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNum);
unsigned option = Op.getImm();
unsigned mode = option & 31;
bool changemode = option >> 5 & 1;
unsigned AIF = option >> 6 & 7;
unsigned imod = option >> 9 & 3;
if (imod == 2)
O << "ie";
else if (imod == 3)
O << "id";
O << '\t';
if (imod > 1) {
if (AIF & 4) O << 'a';
if (AIF & 2) O << 'i';
if (AIF & 1) O << 'f';
if (AIF > 0 && changemode) O << ", ";
}
if (changemode)
O << '#' << mode;
}
void ARMInstPrinter::printMSRMaskOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNum);
unsigned Mask = Op.getImm();
if (Mask) {
O << '_';
if (Mask & 8) O << 'f';
if (Mask & 4) O << 's';
if (Mask & 2) O << 'x';
if (Mask & 1) O << 'c';
}
}
void ARMInstPrinter::printNegZeroOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNum);
O << '#';
if (Op.getImm() < 0)
O << '-' << (-Op.getImm() - 1);
else
O << Op.getImm();
}
void ARMInstPrinter::printPredicateOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
if (CC != ARMCC::AL)
O << ARMCondCodeToString(CC);
}
void ARMInstPrinter::printMandatoryPredicateOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
O << ARMCondCodeToString(CC);
}
void ARMInstPrinter::printSBitModifierOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
if (MI->getOperand(OpNum).getReg()) {
assert(MI->getOperand(OpNum).getReg() == ARM::CPSR &&
"Expect ARM CPSR register!");
O << 's';
}
}
void ARMInstPrinter::printCPInstOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O,
const char *Modifier) {
// FIXME: remove this.
abort();
}
void ARMInstPrinter::printNoHashImmediate(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
O << MI->getOperand(OpNum).getImm();
}
void ARMInstPrinter::printPCLabel(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
// FIXME: remove this.
abort();
}
void ARMInstPrinter::printThumbS4ImmOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
O << "#" << MI->getOperand(OpNum).getImm() * 4;
}
void ARMInstPrinter::printThumbITMask(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
// (3 - the number of trailing zeros) is the number of then / else.
unsigned Mask = MI->getOperand(OpNum).getImm();
unsigned CondBit0 = Mask >> 4 & 1;
unsigned NumTZ = CountTrailingZeros_32(Mask);
assert(NumTZ <= 3 && "Invalid IT mask!");
for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
bool T = ((Mask >> Pos) & 1) == CondBit0;
if (T)
O << 't';
else
O << 'e';
}
}
void ARMInstPrinter::printThumbAddrModeRROperand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op+1);
O << "[" << getRegisterName(MO1.getReg());
O << ", " << getRegisterName(MO2.getReg()) << "]";
}
void ARMInstPrinter::printThumbAddrModeRI5Operand(const MCInst *MI, unsigned Op,
raw_ostream &O,
unsigned Scale) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op+1);
const MCOperand &MO3 = MI->getOperand(Op+2);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, Op, O);
return;
}
O << "[" << getRegisterName(MO1.getReg());
if (MO3.getReg())
O << ", " << getRegisterName(MO3.getReg());
else if (unsigned ImmOffs = MO2.getImm())
O << ", #" << ImmOffs * Scale;
O << "]";
}
void ARMInstPrinter::printThumbAddrModeS1Operand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
printThumbAddrModeRI5Operand(MI, Op, O, 1);
}
void ARMInstPrinter::printThumbAddrModeS2Operand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
printThumbAddrModeRI5Operand(MI, Op, O, 2);
}
void ARMInstPrinter::printThumbAddrModeS4Operand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
printThumbAddrModeRI5Operand(MI, Op, O, 4);
}
void ARMInstPrinter::printThumbAddrModeSPOperand(const MCInst *MI, unsigned Op,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op+1);
O << "[" << getRegisterName(MO1.getReg());
if (unsigned ImmOffs = MO2.getImm())
O << ", #" << ImmOffs*4;
O << "]";
}
void ARMInstPrinter::printTBAddrMode(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
O << "[pc, " << getRegisterName(MI->getOperand(OpNum).getReg());
if (MI->getOpcode() == ARM::t2TBH)
O << ", lsl #1";
O << ']';
}
// Constant shifts t2_so_reg is a 2-operand unit corresponding to the Thumb2
// register with shift forms.
// REG 0 0 - e.g. R5
// REG IMM, SH_OPC - e.g. R5, LSL #3
void ARMInstPrinter::printT2SOOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
unsigned Reg = MO1.getReg();
O << getRegisterName(Reg);
// Print the shift opc.
assert(MO2.isImm() && "Not a valid t2_so_reg value!");
ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
if (ShOpc != ARM_AM::rrx)
O << " #" << ARM_AM::getSORegOffset(MO2.getImm());
}
void ARMInstPrinter::printT2AddrModeImm12Operand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
O << "[" << getRegisterName(MO1.getReg());
unsigned OffImm = MO2.getImm();
if (OffImm) // Don't print +0.
O << ", #" << OffImm;
O << "]";
}
void ARMInstPrinter::printT2AddrModeImm8Operand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
O << "[" << getRegisterName(MO1.getReg());
int32_t OffImm = (int32_t)MO2.getImm();
// Don't print +0.
if (OffImm < 0)
O << ", #-" << -OffImm;
else if (OffImm > 0)
O << ", #" << OffImm;
O << "]";
}
void ARMInstPrinter::printT2AddrModeImm8s4Operand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
O << "[" << getRegisterName(MO1.getReg());
int32_t OffImm = (int32_t)MO2.getImm() / 4;
// Don't print +0.
if (OffImm < 0)
O << ", #-" << -OffImm * 4;
else if (OffImm > 0)
O << ", #" << OffImm * 4;
O << "]";
}
void ARMInstPrinter::printT2AddrModeImm8OffsetOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
int32_t OffImm = (int32_t)MO1.getImm();
// Don't print +0.
if (OffImm < 0)
O << "#-" << -OffImm;
else if (OffImm > 0)
O << "#" << OffImm;
}
void ARMInstPrinter::printT2AddrModeImm8s4OffsetOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
int32_t OffImm = (int32_t)MO1.getImm() / 4;
// Don't print +0.
if (OffImm < 0)
O << "#-" << -OffImm * 4;
else if (OffImm > 0)
O << "#" << OffImm * 4;
}
void ARMInstPrinter::printT2AddrModeSoRegOperand(const MCInst *MI,
unsigned OpNum,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum+1);
const MCOperand &MO3 = MI->getOperand(OpNum+2);
O << "[" << getRegisterName(MO1.getReg());
assert(MO2.getReg() && "Invalid so_reg load / store address!");
O << ", " << getRegisterName(MO2.getReg());
unsigned ShAmt = MO3.getImm();
if (ShAmt) {
assert(ShAmt <= 3 && "Not a valid Thumb2 addressing mode!");
O << ", lsl #" << ShAmt;
}
O << "]";
}
void ARMInstPrinter::printVFPf32ImmOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
O << '#' << MI->getOperand(OpNum).getImm();
}
void ARMInstPrinter::printVFPf64ImmOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
O << '#' << MI->getOperand(OpNum).getImm();
}
void ARMInstPrinter::printNEONModImmOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
unsigned EncodedImm = MI->getOperand(OpNum).getImm();
unsigned EltBits;
uint64_t Val = ARM_AM::decodeNEONModImm(EncodedImm, EltBits);
O << "#0x" << utohexstr(Val);
}
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