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llvm-for-llvmta/lib/Target/ARM/MCTargetDesc/ARMInstPrinter.cpp

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//===-- ARMInstPrinter.cpp - Convert ARM MCInst to assembly syntax --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This class prints an ARM MCInst to a .s file.
//
//===----------------------------------------------------------------------===//
#include "ARMInstPrinter.h"
#include "Utils/ARMBaseInfo.h"
#include "MCTargetDesc/ARMAddressingModes.h"
#include "MCTargetDesc/ARMBaseInfo.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/SubtargetFeature.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cassert>
#include <cstdint>
using namespace llvm;
#define DEBUG_TYPE "asm-printer"
#define PRINT_ALIAS_INSTR
#include "ARMGenAsmWriter.inc"
/// translateShiftImm - Convert shift immediate from 0-31 to 1-32 for printing.
///
/// getSORegOffset returns an integer from 0-31, representing '32' as 0.
static unsigned translateShiftImm(unsigned imm) {
// lsr #32 and asr #32 exist, but should be encoded as a 0.
assert((imm & ~0x1f) == 0 && "Invalid shift encoding");
if (imm == 0)
return 32;
return imm;
}
/// Prints the shift value with an immediate value.
static void printRegImmShift(raw_ostream &O, ARM_AM::ShiftOpc ShOpc,
unsigned ShImm, bool UseMarkup) {
if (ShOpc == ARM_AM::no_shift || (ShOpc == ARM_AM::lsl && !ShImm))
return;
O << ", ";
assert(!(ShOpc == ARM_AM::ror && !ShImm) && "Cannot have ror #0");
O << getShiftOpcStr(ShOpc);
if (ShOpc != ARM_AM::rrx) {
O << " ";
if (UseMarkup)
O << "<imm:";
O << "#" << translateShiftImm(ShImm);
if (UseMarkup)
O << ">";
}
}
ARMInstPrinter::ARMInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
const MCRegisterInfo &MRI)
: MCInstPrinter(MAI, MII, MRI) {}
bool ARMInstPrinter::applyTargetSpecificCLOption(StringRef Opt) {
if (Opt == "reg-names-std") {
DefaultAltIdx = ARM::NoRegAltName;
return true;
}
if (Opt == "reg-names-raw") {
DefaultAltIdx = ARM::RegNamesRaw;
return true;
}
return false;
}
void ARMInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
OS << markup("<reg:") << getRegisterName(RegNo, DefaultAltIdx) << markup(">");
}
void ARMInstPrinter::printInst(const MCInst *MI, uint64_t Address,
StringRef Annot, const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Opcode = MI->getOpcode();
switch (Opcode) {
// Check for MOVs and print canonical forms, instead.
case ARM::MOVsr: {
// FIXME: Thumb variants?
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, STI, O);
printPredicateOperand(MI, 4, STI, O);
O << '\t';
printRegName(O, Dst.getReg());
O << ", ";
printRegName(O, MO1.getReg());
O << ", ";
printRegName(O, MO2.getReg());
assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
printAnnotation(O, Annot);
return;
}
case ARM::MOVsi: {
// FIXME: Thumb variants?
const MCOperand &Dst = MI->getOperand(0);
const MCOperand &MO1 = MI->getOperand(1);
const MCOperand &MO2 = MI->getOperand(2);
O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO2.getImm()));
printSBitModifierOperand(MI, 5, STI, O);
printPredicateOperand(MI, 3, STI, O);
O << '\t';
printRegName(O, Dst.getReg());
O << ", ";
printRegName(O, MO1.getReg());
if (ARM_AM::getSORegShOp(MO2.getImm()) == ARM_AM::rrx) {
printAnnotation(O, Annot);
return;
}
O << ", " << markup("<imm:") << "#"
<< translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm())) << markup(">");
printAnnotation(O, Annot);
return;
}
// A8.6.123 PUSH
case ARM::STMDB_UPD:
case ARM::t2STMDB_UPD:
if (MI->getOperand(0).getReg() == ARM::SP && MI->getNumOperands() > 5) {
// Should only print PUSH if there are at least two registers in the list.
O << '\t' << "push";
printPredicateOperand(MI, 2, STI, O);
if (Opcode == ARM::t2STMDB_UPD)
O << ".w";
O << '\t';
printRegisterList(MI, 4, STI, O);
printAnnotation(O, Annot);
return;
} else
break;
case ARM::STR_PRE_IMM:
if (MI->getOperand(2).getReg() == ARM::SP &&
MI->getOperand(3).getImm() == -4) {
O << '\t' << "push";
printPredicateOperand(MI, 4, STI, O);
O << "\t{";
printRegName(O, MI->getOperand(1).getReg());
O << "}";
printAnnotation(O, Annot);
return;
} else
break;
// A8.6.122 POP
case ARM::LDMIA_UPD:
case ARM::t2LDMIA_UPD:
if (MI->getOperand(0).getReg() == ARM::SP && MI->getNumOperands() > 5) {
// Should only print POP if there are at least two registers in the list.
O << '\t' << "pop";
printPredicateOperand(MI, 2, STI, O);
if (Opcode == ARM::t2LDMIA_UPD)
O << ".w";
O << '\t';
printRegisterList(MI, 4, STI, O);
printAnnotation(O, Annot);
return;
} else
break;
case ARM::LDR_POST_IMM:
if (MI->getOperand(2).getReg() == ARM::SP &&
MI->getOperand(4).getImm() == 4) {
O << '\t' << "pop";
printPredicateOperand(MI, 5, STI, O);
O << "\t{";
printRegName(O, MI->getOperand(0).getReg());
O << "}";
printAnnotation(O, Annot);
return;
} else
break;
// A8.6.355 VPUSH
case ARM::VSTMSDB_UPD:
case ARM::VSTMDDB_UPD:
if (MI->getOperand(0).getReg() == ARM::SP) {
O << '\t' << "vpush";
printPredicateOperand(MI, 2, STI, O);
O << '\t';
printRegisterList(MI, 4, STI, O);
printAnnotation(O, Annot);
return;
} else
break;
// A8.6.354 VPOP
case ARM::VLDMSIA_UPD:
case ARM::VLDMDIA_UPD:
if (MI->getOperand(0).getReg() == ARM::SP) {
O << '\t' << "vpop";
printPredicateOperand(MI, 2, STI, O);
O << '\t';
printRegisterList(MI, 4, STI, O);
printAnnotation(O, Annot);
return;
} else
break;
case ARM::tLDMIA: {
bool Writeback = true;
unsigned BaseReg = MI->getOperand(0).getReg();
for (unsigned i = 3; i < MI->getNumOperands(); ++i) {
if (MI->getOperand(i).getReg() == BaseReg)
Writeback = false;
}
O << "\tldm";
printPredicateOperand(MI, 1, STI, O);
O << '\t';
printRegName(O, BaseReg);
if (Writeback)
O << "!";
O << ", ";
printRegisterList(MI, 3, STI, O);
printAnnotation(O, Annot);
return;
}
// Combine 2 GPRs from disassember into a GPRPair to match with instr def.
// ldrexd/strexd require even/odd GPR pair. To enforce this constraint,
// a single GPRPair reg operand is used in the .td file to replace the two
// GPRs. However, when decoding them, the two GRPs cannot be automatically
// expressed as a GPRPair, so we have to manually merge them.
// FIXME: We would really like to be able to tablegen'erate this.
case ARM::LDREXD:
case ARM::STREXD:
case ARM::LDAEXD:
case ARM::STLEXD: {
const MCRegisterClass &MRC = MRI.getRegClass(ARM::GPRRegClassID);
bool isStore = Opcode == ARM::STREXD || Opcode == ARM::STLEXD;
unsigned Reg = MI->getOperand(isStore ? 1 : 0).getReg();
if (MRC.contains(Reg)) {
MCInst NewMI;
MCOperand NewReg;
NewMI.setOpcode(Opcode);
if (isStore)
NewMI.addOperand(MI->getOperand(0));
NewReg = MCOperand::createReg(MRI.getMatchingSuperReg(
Reg, ARM::gsub_0, &MRI.getRegClass(ARM::GPRPairRegClassID)));
NewMI.addOperand(NewReg);
// Copy the rest operands into NewMI.
for (unsigned i = isStore ? 3 : 2; i < MI->getNumOperands(); ++i)
NewMI.addOperand(MI->getOperand(i));
printInstruction(&NewMI, Address, STI, O);
return;
}
break;
}
case ARM::TSB:
case ARM::t2TSB:
O << "\ttsb\tcsync";
return;
case ARM::t2DSB:
switch (MI->getOperand(0).getImm()) {
default:
if (!printAliasInstr(MI, Address, STI, O))
printInstruction(MI, Address, STI, O);
break;
case 0:
O << "\tssbb";
break;
case 4:
O << "\tpssbb";
break;
}
printAnnotation(O, Annot);
return;
}
if (!printAliasInstr(MI, Address, STI, O))
printInstruction(MI, Address, STI, O);
printAnnotation(O, Annot);
}
void ARMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI, raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNo);
if (Op.isReg()) {
unsigned Reg = Op.getReg();
printRegName(O, Reg);
} else if (Op.isImm()) {
O << markup("<imm:") << '#' << formatImm(Op.getImm()) << markup(">");
} else {
assert(Op.isExpr() && "unknown operand kind in printOperand");
const MCExpr *Expr = Op.getExpr();
switch (Expr->getKind()) {
case MCExpr::Binary:
O << '#';
Expr->print(O, &MAI);
break;
case MCExpr::Constant: {
// If a symbolic branch target was added as a constant expression then
// print that address in hex. And only print 32 unsigned bits for the
// address.
const MCConstantExpr *Constant = cast<MCConstantExpr>(Expr);
int64_t TargetAddress;
if (!Constant->evaluateAsAbsolute(TargetAddress)) {
O << '#';
Expr->print(O, &MAI);
} else {
O << "0x";
O.write_hex(static_cast<uint32_t>(TargetAddress));
}
break;
}
default:
// FIXME: Should we always treat this as if it is a constant literal and
// prefix it with '#'?
Expr->print(O, &MAI);
break;
}
}
}
void ARMInstPrinter::printThumbLdrLabelOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
if (MO1.isExpr()) {
MO1.getExpr()->print(O, &MAI);
return;
}
O << markup("<mem:") << "[pc, ";
int32_t OffImm = (int32_t)MO1.getImm();
bool isSub = OffImm < 0;
// Special value for #-0. All others are normal.
if (OffImm == INT32_MIN)
OffImm = 0;
if (isSub) {
O << markup("<imm:") << "#-" << formatImm(-OffImm) << markup(">");
} else {
O << markup("<imm:") << "#" << formatImm(OffImm) << markup(">");
}
O << "]" << markup(">");
}
// 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::printSORegRegOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
const MCOperand &MO3 = MI->getOperand(OpNum + 2);
printRegName(O, MO1.getReg());
// Print the shift opc.
ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO3.getImm());
O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
if (ShOpc == ARM_AM::rrx)
return;
O << ' ';
printRegName(O, MO2.getReg());
assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
}
void ARMInstPrinter::printSORegImmOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
printRegName(O, MO1.getReg());
// Print the shift opc.
printRegImmShift(O, ARM_AM::getSORegShOp(MO2.getImm()),
ARM_AM::getSORegOffset(MO2.getImm()), UseMarkup);
}
//===--------------------------------------------------------------------===//
// Addressing Mode #2
//===--------------------------------------------------------------------===//
void ARMInstPrinter::printAM2PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op + 1);
const MCOperand &MO3 = MI->getOperand(Op + 2);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
if (!MO2.getReg()) {
if (ARM_AM::getAM2Offset(MO3.getImm())) { // Don't print +0.
O << ", " << markup("<imm:") << "#"
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
<< ARM_AM::getAM2Offset(MO3.getImm()) << markup(">");
}
O << "]" << markup(">");
return;
}
O << ", ";
O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()));
printRegName(O, MO2.getReg());
printRegImmShift(O, ARM_AM::getAM2ShiftOpc(MO3.getImm()),
ARM_AM::getAM2Offset(MO3.getImm()), UseMarkup);
O << "]" << markup(">");
}
void ARMInstPrinter::printAddrModeTBB(const MCInst *MI, unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op + 1);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
O << ", ";
printRegName(O, MO2.getReg());
O << "]" << markup(">");
}
void ARMInstPrinter::printAddrModeTBH(const MCInst *MI, unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op + 1);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
O << ", ";
printRegName(O, MO2.getReg());
O << ", lsl " << markup("<imm:") << "#1" << markup(">") << "]" << markup(">");
}
void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, Op, STI, O);
return;
}
#ifndef NDEBUG
const MCOperand &MO3 = MI->getOperand(Op + 2);
unsigned IdxMode = ARM_AM::getAM2IdxMode(MO3.getImm());
assert(IdxMode != ARMII::IndexModePost && "Should be pre or offset index op");
#endif
printAM2PreOrOffsetIndexOp(MI, Op, STI, O);
}
void ARMInstPrinter::printAddrMode2OffsetOperand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
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 << markup("<imm:") << '#'
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm())) << ImmOffs
<< markup(">");
return;
}
O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()));
printRegName(O, MO1.getReg());
printRegImmShift(O, ARM_AM::getAM2ShiftOpc(MO2.getImm()),
ARM_AM::getAM2Offset(MO2.getImm()), UseMarkup);
}
//===--------------------------------------------------------------------===//
// Addressing Mode #3
//===--------------------------------------------------------------------===//
void ARMInstPrinter::printAM3PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
raw_ostream &O,
bool AlwaysPrintImm0) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op + 1);
const MCOperand &MO3 = MI->getOperand(Op + 2);
O << markup("<mem:") << '[';
printRegName(O, MO1.getReg());
if (MO2.getReg()) {
O << ", " << getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()));
printRegName(O, MO2.getReg());
O << ']' << markup(">");
return;
}
// If the op is sub we have to print the immediate even if it is 0
unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm());
ARM_AM::AddrOpc op = ARM_AM::getAM3Op(MO3.getImm());
if (AlwaysPrintImm0 || ImmOffs || (op == ARM_AM::sub)) {
O << ", " << markup("<imm:") << "#" << ARM_AM::getAddrOpcStr(op) << ImmOffs
<< markup(">");
}
O << ']' << markup(">");
}
template <bool AlwaysPrintImm0>
void ARMInstPrinter::printAddrMode3Operand(const MCInst *MI, unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
if (!MO1.isReg()) { // For label symbolic references.
printOperand(MI, Op, STI, O);
return;
}
assert(ARM_AM::getAM3IdxMode(MI->getOperand(Op + 2).getImm()) !=
ARMII::IndexModePost &&
"unexpected idxmode");
printAM3PreOrOffsetIndexOp(MI, Op, O, AlwaysPrintImm0);
}
void ARMInstPrinter::printAddrMode3OffsetOperand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
if (MO1.getReg()) {
O << getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm()));
printRegName(O, MO1.getReg());
return;
}
unsigned ImmOffs = ARM_AM::getAM3Offset(MO2.getImm());
O << markup("<imm:") << '#'
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm())) << ImmOffs
<< markup(">");
}
void ARMInstPrinter::printPostIdxImm8Operand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
unsigned Imm = MO.getImm();
O << markup("<imm:") << '#' << ((Imm & 256) ? "" : "-") << (Imm & 0xff)
<< markup(">");
}
void ARMInstPrinter::printPostIdxRegOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
O << (MO2.getImm() ? "" : "-");
printRegName(O, MO1.getReg());
}
void ARMInstPrinter::printPostIdxImm8s4Operand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
unsigned Imm = MO.getImm();
O << markup("<imm:") << '#' << ((Imm & 256) ? "" : "-") << ((Imm & 0xff) << 2)
<< markup(">");
}
template<int shift>
void ARMInstPrinter::printMveAddrModeRQOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
O << ", ";
printRegName(O, MO2.getReg());
if (shift > 0)
printRegImmShift(O, ARM_AM::uxtw, shift, UseMarkup);
O << "]" << markup(">");
}
void ARMInstPrinter::printMveAddrModeQOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
int64_t Imm = MO2.getImm();
if (Imm != 0)
O << ", " << markup("<imm:") << '#' << Imm << markup(">");
O << "]" << markup(">");
}
void ARMInstPrinter::printLdStmModeOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
ARM_AM::AMSubMode Mode =
ARM_AM::getAM4SubMode(MI->getOperand(OpNum).getImm());
O << ARM_AM::getAMSubModeStr(Mode);
}
template <bool AlwaysPrintImm0>
void ARMInstPrinter::printAddrMode5Operand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
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, STI, O);
return;
}
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm());
ARM_AM::AddrOpc Op = ARM_AM::getAM5Op(MO2.getImm());
if (AlwaysPrintImm0 || ImmOffs || Op == ARM_AM::sub) {
O << ", " << markup("<imm:") << "#" << ARM_AM::getAddrOpcStr(Op)
<< ImmOffs * 4 << markup(">");
}
O << "]" << markup(">");
}
template <bool AlwaysPrintImm0>
void ARMInstPrinter::printAddrMode5FP16Operand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
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, STI, O);
return;
}
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
unsigned ImmOffs = ARM_AM::getAM5FP16Offset(MO2.getImm());
unsigned Op = ARM_AM::getAM5FP16Op(MO2.getImm());
if (AlwaysPrintImm0 || ImmOffs || Op == ARM_AM::sub) {
O << ", "
<< markup("<imm:")
<< "#"
<< ARM_AM::getAddrOpcStr(ARM_AM::getAM5FP16Op(MO2.getImm()))
<< ImmOffs * 2
<< markup(">");
}
O << "]" << markup(">");
}
void ARMInstPrinter::printAddrMode6Operand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
if (MO2.getImm()) {
O << ":" << (MO2.getImm() << 3);
}
O << "]" << markup(">");
}
void ARMInstPrinter::printAddrMode7Operand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
O << "]" << markup(">");
}
void ARMInstPrinter::printAddrMode6OffsetOperand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
if (MO.getReg() == 0)
O << "!";
else {
O << ", ";
printRegName(O, MO.getReg());
}
}
void ARMInstPrinter::printBitfieldInvMaskImmOperand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
uint32_t v = ~MO.getImm();
int32_t lsb = countTrailingZeros(v);
int32_t width = (32 - countLeadingZeros(v)) - lsb;
assert(MO.isImm() && "Not a valid bf_inv_mask_imm value!");
O << markup("<imm:") << '#' << lsb << markup(">") << ", " << markup("<imm:")
<< '#' << width << markup(">");
}
void ARMInstPrinter::printMemBOption(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned val = MI->getOperand(OpNum).getImm();
O << ARM_MB::MemBOptToString(val, STI.getFeatureBits()[ARM::HasV8Ops]);
}
void ARMInstPrinter::printInstSyncBOption(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned val = MI->getOperand(OpNum).getImm();
O << ARM_ISB::InstSyncBOptToString(val);
}
void ARMInstPrinter::printTraceSyncBOption(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned val = MI->getOperand(OpNum).getImm();
O << ARM_TSB::TraceSyncBOptToString(val);
}
void ARMInstPrinter::printShiftImmOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned ShiftOp = MI->getOperand(OpNum).getImm();
bool isASR = (ShiftOp & (1 << 5)) != 0;
unsigned Amt = ShiftOp & 0x1f;
if (isASR) {
O << ", asr " << markup("<imm:") << "#" << (Amt == 0 ? 32 : Amt)
<< markup(">");
} else if (Amt) {
O << ", lsl " << markup("<imm:") << "#" << Amt << markup(">");
}
}
void ARMInstPrinter::printPKHLSLShiftImm(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Imm = MI->getOperand(OpNum).getImm();
if (Imm == 0)
return;
assert(Imm > 0 && Imm < 32 && "Invalid PKH shift immediate value!");
O << ", lsl " << markup("<imm:") << "#" << Imm << markup(">");
}
void ARMInstPrinter::printPKHASRShiftImm(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Imm = MI->getOperand(OpNum).getImm();
// A shift amount of 32 is encoded as 0.
if (Imm == 0)
Imm = 32;
assert(Imm > 0 && Imm <= 32 && "Invalid PKH shift immediate value!");
O << ", asr " << markup("<imm:") << "#" << Imm << markup(">");
}
void ARMInstPrinter::printRegisterList(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
if (MI->getOpcode() != ARM::t2CLRM) {
assert(std::is_sorted(MI->begin() + OpNum, MI->end(),
[&](const MCOperand &LHS, const MCOperand &RHS) {
return MRI.getEncodingValue(LHS.getReg()) <
MRI.getEncodingValue(RHS.getReg());
}));
}
O << "{";
for (unsigned i = OpNum, e = MI->getNumOperands(); i != e; ++i) {
if (i != OpNum)
O << ", ";
printRegName(O, MI->getOperand(i).getReg());
}
O << "}";
}
void ARMInstPrinter::printGPRPairOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Reg = MI->getOperand(OpNum).getReg();
printRegName(O, MRI.getSubReg(Reg, ARM::gsub_0));
O << ", ";
printRegName(O, MRI.getSubReg(Reg, ARM::gsub_1));
}
void ARMInstPrinter::printSetendOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNum);
if (Op.getImm())
O << "be";
else
O << "le";
}
void ARMInstPrinter::printCPSIMod(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI, raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNum);
O << ARM_PROC::IModToString(Op.getImm());
}
void ARMInstPrinter::printCPSIFlag(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI, raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNum);
unsigned IFlags = Op.getImm();
for (int i = 2; i >= 0; --i)
if (IFlags & (1 << i))
O << ARM_PROC::IFlagsToString(1 << i);
if (IFlags == 0)
O << "none";
}
void ARMInstPrinter::printMSRMaskOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNum);
const FeatureBitset &FeatureBits = STI.getFeatureBits();
if (FeatureBits[ARM::FeatureMClass]) {
unsigned SYSm = Op.getImm() & 0xFFF; // 12-bit SYSm
unsigned Opcode = MI->getOpcode();
// For writes, handle extended mask bits if the DSP extension is present.
if (Opcode == ARM::t2MSR_M && FeatureBits[ARM::FeatureDSP]) {
auto TheReg =ARMSysReg::lookupMClassSysRegBy12bitSYSmValue(SYSm);
if (TheReg && TheReg->isInRequiredFeatures({ARM::FeatureDSP})) {
O << TheReg->Name;
return;
}
}
// Handle the basic 8-bit mask.
SYSm &= 0xff;
if (Opcode == ARM::t2MSR_M && FeatureBits [ARM::HasV7Ops]) {
// ARMv7-M deprecates using MSR APSR without a _<bits> qualifier as an
// alias for MSR APSR_nzcvq.
auto TheReg = ARMSysReg::lookupMClassSysRegAPSRNonDeprecated(SYSm);
if (TheReg) {
O << TheReg->Name;
return;
}
}
auto TheReg = ARMSysReg::lookupMClassSysRegBy8bitSYSmValue(SYSm);
if (TheReg) {
O << TheReg->Name;
return;
}
O << SYSm;
return;
}
// As special cases, CPSR_f, CPSR_s and CPSR_fs prefer printing as
// APSR_nzcvq, APSR_g and APSRnzcvqg, respectively.
unsigned SpecRegRBit = Op.getImm() >> 4;
unsigned Mask = Op.getImm() & 0xf;
if (!SpecRegRBit && (Mask == 8 || Mask == 4 || Mask == 12)) {
O << "APSR_";
switch (Mask) {
default:
llvm_unreachable("Unexpected mask value!");
case 4:
O << "g";
return;
case 8:
O << "nzcvq";
return;
case 12:
O << "nzcvqg";
return;
}
}
if (SpecRegRBit)
O << "SPSR";
else
O << "CPSR";
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::printBankedRegOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
uint32_t Banked = MI->getOperand(OpNum).getImm();
auto TheReg = ARMBankedReg::lookupBankedRegByEncoding(Banked);
assert(TheReg && "invalid banked register operand");
std::string Name = TheReg->Name;
uint32_t isSPSR = (Banked & 0x20) >> 5;
if (isSPSR)
Name.replace(0, 4, "SPSR"); // convert 'spsr_' to 'SPSR_'
O << Name;
}
void ARMInstPrinter::printPredicateOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
// Handle the undefined 15 CC value here for printing so we don't abort().
if ((unsigned)CC == 15)
O << "<und>";
else if (CC != ARMCC::AL)
O << ARMCondCodeToString(CC);
}
void ARMInstPrinter::printMandatoryRestrictedPredicateOperand(
const MCInst *MI, unsigned OpNum, const MCSubtargetInfo &STI,
raw_ostream &O) {
if ((ARMCC::CondCodes)MI->getOperand(OpNum).getImm() == ARMCC::HS)
O << "cs";
else
printMandatoryPredicateOperand(MI, OpNum, STI, O);
}
void ARMInstPrinter::printMandatoryPredicateOperand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
O << ARMCondCodeToString(CC);
}
void ARMInstPrinter::printMandatoryInvertedPredicateOperand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
O << ARMCondCodeToString(ARMCC::getOppositeCondition(CC));
}
void ARMInstPrinter::printSBitModifierOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
if (MI->getOperand(OpNum).getReg()) {
assert(MI->getOperand(OpNum).getReg() == ARM::CPSR &&
"Expect ARM CPSR register!");
O << 's';
}
}
void ARMInstPrinter::printNoHashImmediate(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << MI->getOperand(OpNum).getImm();
}
void ARMInstPrinter::printPImmediate(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << "p" << MI->getOperand(OpNum).getImm();
}
void ARMInstPrinter::printCImmediate(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << "c" << MI->getOperand(OpNum).getImm();
}
void ARMInstPrinter::printCoprocOptionImm(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << "{" << MI->getOperand(OpNum).getImm() << "}";
}
void ARMInstPrinter::printPCLabel(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI, raw_ostream &O) {
llvm_unreachable("Unhandled PC-relative pseudo-instruction!");
}
template <unsigned scale>
void ARMInstPrinter::printAdrLabelOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
if (MO.isExpr()) {
MO.getExpr()->print(O, &MAI);
return;
}
int32_t OffImm = (int32_t)MO.getImm() << scale;
O << markup("<imm:");
if (OffImm == INT32_MIN)
O << "#-0";
else if (OffImm < 0)
O << "#-" << -OffImm;
else
O << "#" << OffImm;
O << markup(">");
}
void ARMInstPrinter::printThumbS4ImmOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << markup("<imm:") << "#" << formatImm(MI->getOperand(OpNum).getImm() * 4)
<< markup(">");
}
void ARMInstPrinter::printThumbSRImm(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Imm = MI->getOperand(OpNum).getImm();
O << markup("<imm:") << "#" << formatImm((Imm == 0 ? 32 : Imm))
<< markup(">");
}
void ARMInstPrinter::printThumbITMask(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// (3 - the number of trailing zeros) is the number of then / else.
unsigned Mask = MI->getOperand(OpNum).getImm();
unsigned NumTZ = countTrailingZeros(Mask);
assert(NumTZ <= 3 && "Invalid IT mask!");
for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
if ((Mask >> Pos) & 1)
O << 'e';
else
O << 't';
}
}
void ARMInstPrinter::printThumbAddrModeRROperand(const MCInst *MI, unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op + 1);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, Op, STI, O);
return;
}
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
if (unsigned RegNum = MO2.getReg()) {
O << ", ";
printRegName(O, RegNum);
}
O << "]" << markup(">");
}
void ARMInstPrinter::printThumbAddrModeImm5SOperand(const MCInst *MI,
unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O,
unsigned Scale) {
const MCOperand &MO1 = MI->getOperand(Op);
const MCOperand &MO2 = MI->getOperand(Op + 1);
if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
printOperand(MI, Op, STI, O);
return;
}
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
if (unsigned ImmOffs = MO2.getImm()) {
O << ", " << markup("<imm:") << "#" << formatImm(ImmOffs * Scale)
<< markup(">");
}
O << "]" << markup(">");
}
void ARMInstPrinter::printThumbAddrModeImm5S1Operand(const MCInst *MI,
unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
printThumbAddrModeImm5SOperand(MI, Op, STI, O, 1);
}
void ARMInstPrinter::printThumbAddrModeImm5S2Operand(const MCInst *MI,
unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
printThumbAddrModeImm5SOperand(MI, Op, STI, O, 2);
}
void ARMInstPrinter::printThumbAddrModeImm5S4Operand(const MCInst *MI,
unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
printThumbAddrModeImm5SOperand(MI, Op, STI, O, 4);
}
void ARMInstPrinter::printThumbAddrModeSPOperand(const MCInst *MI, unsigned Op,
const MCSubtargetInfo &STI,
raw_ostream &O) {
printThumbAddrModeImm5SOperand(MI, Op, STI, O, 4);
}
// 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,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
unsigned Reg = MO1.getReg();
printRegName(O, Reg);
// Print the shift opc.
assert(MO2.isImm() && "Not a valid t2_so_reg value!");
printRegImmShift(O, ARM_AM::getSORegShOp(MO2.getImm()),
ARM_AM::getSORegOffset(MO2.getImm()), UseMarkup);
}
template <bool AlwaysPrintImm0>
void ARMInstPrinter::printAddrModeImm12Operand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
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, STI, O);
return;
}
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
int32_t OffImm = (int32_t)MO2.getImm();
bool isSub = OffImm < 0;
// Special value for #-0. All others are normal.
if (OffImm == INT32_MIN)
OffImm = 0;
if (isSub) {
O << ", " << markup("<imm:") << "#-" << formatImm(-OffImm) << markup(">");
} else if (AlwaysPrintImm0 || OffImm > 0) {
O << ", " << markup("<imm:") << "#" << formatImm(OffImm) << markup(">");
}
O << "]" << markup(">");
}
template <bool AlwaysPrintImm0>
void ARMInstPrinter::printT2AddrModeImm8Operand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
int32_t OffImm = (int32_t)MO2.getImm();
bool isSub = OffImm < 0;
// Don't print +0.
if (OffImm == INT32_MIN)
OffImm = 0;
if (isSub) {
O << ", " << markup("<imm:") << "#-" << -OffImm << markup(">");
} else if (AlwaysPrintImm0 || OffImm > 0) {
O << ", " << markup("<imm:") << "#" << OffImm << markup(">");
}
O << "]" << markup(">");
}
template <bool AlwaysPrintImm0>
void ARMInstPrinter::printT2AddrModeImm8s4Operand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
if (!MO1.isReg()) { // For label symbolic references.
printOperand(MI, OpNum, STI, O);
return;
}
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
int32_t OffImm = (int32_t)MO2.getImm();
bool isSub = OffImm < 0;
assert(((OffImm & 0x3) == 0) && "Not a valid immediate!");
// Don't print +0.
if (OffImm == INT32_MIN)
OffImm = 0;
if (isSub) {
O << ", " << markup("<imm:") << "#-" << -OffImm << markup(">");
} else if (AlwaysPrintImm0 || OffImm > 0) {
O << ", " << markup("<imm:") << "#" << OffImm << markup(">");
}
O << "]" << markup(">");
}
void ARMInstPrinter::printT2AddrModeImm0_1020s4Operand(
const MCInst *MI, unsigned OpNum, const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
if (MO2.getImm()) {
O << ", " << markup("<imm:") << "#" << formatImm(MO2.getImm() * 4)
<< markup(">");
}
O << "]" << markup(">");
}
void ARMInstPrinter::printT2AddrModeImm8OffsetOperand(
const MCInst *MI, unsigned OpNum, const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
int32_t OffImm = (int32_t)MO1.getImm();
O << ", " << markup("<imm:");
if (OffImm == INT32_MIN)
O << "#-0";
else if (OffImm < 0)
O << "#-" << -OffImm;
else
O << "#" << OffImm;
O << markup(">");
}
void ARMInstPrinter::printT2AddrModeImm8s4OffsetOperand(
const MCInst *MI, unsigned OpNum, const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
int32_t OffImm = (int32_t)MO1.getImm();
assert(((OffImm & 0x3) == 0) && "Not a valid immediate!");
O << ", " << markup("<imm:");
if (OffImm == INT32_MIN)
O << "#-0";
else if (OffImm < 0)
O << "#-" << -OffImm;
else
O << "#" << OffImm;
O << markup(">");
}
void ARMInstPrinter::printT2AddrModeSoRegOperand(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO1 = MI->getOperand(OpNum);
const MCOperand &MO2 = MI->getOperand(OpNum + 1);
const MCOperand &MO3 = MI->getOperand(OpNum + 2);
O << markup("<mem:") << "[";
printRegName(O, MO1.getReg());
assert(MO2.getReg() && "Invalid so_reg load / store address!");
O << ", ";
printRegName(O, MO2.getReg());
unsigned ShAmt = MO3.getImm();
if (ShAmt) {
assert(ShAmt <= 3 && "Not a valid Thumb2 addressing mode!");
O << ", lsl " << markup("<imm:") << "#" << ShAmt << markup(">");
}
O << "]" << markup(">");
}
void ARMInstPrinter::printFPImmOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
O << markup("<imm:") << '#' << ARM_AM::getFPImmFloat(MO.getImm())
<< markup(">");
}
void ARMInstPrinter::printVMOVModImmOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned EncodedImm = MI->getOperand(OpNum).getImm();
unsigned EltBits;
uint64_t Val = ARM_AM::decodeVMOVModImm(EncodedImm, EltBits);
O << markup("<imm:") << "#0x";
O.write_hex(Val);
O << markup(">");
}
void ARMInstPrinter::printImmPlusOneOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Imm = MI->getOperand(OpNum).getImm();
O << markup("<imm:") << "#" << formatImm(Imm + 1) << markup(">");
}
void ARMInstPrinter::printRotImmOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Imm = MI->getOperand(OpNum).getImm();
if (Imm == 0)
return;
assert(Imm <= 3 && "illegal ror immediate!");
O << ", ror " << markup("<imm:") << "#" << 8 * Imm << markup(">");
}
void ARMInstPrinter::printModImmOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
MCOperand Op = MI->getOperand(OpNum);
// Support for fixups (MCFixup)
if (Op.isExpr())
return printOperand(MI, OpNum, STI, O);
unsigned Bits = Op.getImm() & 0xFF;
unsigned Rot = (Op.getImm() & 0xF00) >> 7;
bool PrintUnsigned = false;
switch (MI->getOpcode()) {
case ARM::MOVi:
// Movs to PC should be treated unsigned
PrintUnsigned = (MI->getOperand(OpNum - 1).getReg() == ARM::PC);
break;
case ARM::MSRi:
// Movs to special registers should be treated unsigned
PrintUnsigned = true;
break;
}
int32_t Rotated = ARM_AM::rotr32(Bits, Rot);
if (ARM_AM::getSOImmVal(Rotated) == Op.getImm()) {
// #rot has the least possible value
O << "#" << markup("<imm:");
if (PrintUnsigned)
O << static_cast<uint32_t>(Rotated);
else
O << Rotated;
O << markup(">");
return;
}
// Explicit #bits, #rot implied
O << "#" << markup("<imm:") << Bits << markup(">") << ", #" << markup("<imm:")
<< Rot << markup(">");
}
void ARMInstPrinter::printFBits16(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI, raw_ostream &O) {
O << markup("<imm:") << "#" << 16 - MI->getOperand(OpNum).getImm()
<< markup(">");
}
void ARMInstPrinter::printFBits32(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI, raw_ostream &O) {
O << markup("<imm:") << "#" << 32 - MI->getOperand(OpNum).getImm()
<< markup(">");
}
void ARMInstPrinter::printVectorIndex(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << "[" << MI->getOperand(OpNum).getImm() << "]";
}
void ARMInstPrinter::printVectorListOne(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << "}";
}
void ARMInstPrinter::printVectorListTwo(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Reg = MI->getOperand(OpNum).getReg();
unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_1);
O << "{";
printRegName(O, Reg0);
O << ", ";
printRegName(O, Reg1);
O << "}";
}
void ARMInstPrinter::printVectorListTwoSpaced(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Reg = MI->getOperand(OpNum).getReg();
unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_2);
O << "{";
printRegName(O, Reg0);
O << ", ";
printRegName(O, Reg1);
O << "}";
}
void ARMInstPrinter::printVectorListThree(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 1);
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << "}";
}
void ARMInstPrinter::printVectorListFour(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 1);
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 3);
O << "}";
}
void ARMInstPrinter::printVectorListOneAllLanes(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << "[]}";
}
void ARMInstPrinter::printVectorListTwoAllLanes(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Reg = MI->getOperand(OpNum).getReg();
unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_1);
O << "{";
printRegName(O, Reg0);
O << "[], ";
printRegName(O, Reg1);
O << "[]}";
}
void ARMInstPrinter::printVectorListThreeAllLanes(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 1);
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << "[]}";
}
void ARMInstPrinter::printVectorListFourAllLanes(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 1);
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 3);
O << "[]}";
}
void ARMInstPrinter::printVectorListTwoSpacedAllLanes(
const MCInst *MI, unsigned OpNum, const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Reg = MI->getOperand(OpNum).getReg();
unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_2);
O << "{";
printRegName(O, Reg0);
O << "[], ";
printRegName(O, Reg1);
O << "[]}";
}
void ARMInstPrinter::printVectorListThreeSpacedAllLanes(
const MCInst *MI, unsigned OpNum, const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 4);
O << "[]}";
}
void ARMInstPrinter::printVectorListFourSpacedAllLanes(
const MCInst *MI, unsigned OpNum, const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 4);
O << "[], ";
printRegName(O, MI->getOperand(OpNum).getReg() + 6);
O << "[]}";
}
void ARMInstPrinter::printVectorListThreeSpaced(const MCInst *MI,
unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 4);
O << "}";
}
void ARMInstPrinter::printVectorListFourSpaced(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// Normally, it's not safe to use register enum values directly with
// addition to get the next register, but for VFP registers, the
// sort order is guaranteed because they're all of the form D<n>.
O << "{";
printRegName(O, MI->getOperand(OpNum).getReg());
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 2);
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 4);
O << ", ";
printRegName(O, MI->getOperand(OpNum).getReg() + 6);
O << "}";
}
template<unsigned NumRegs>
void ARMInstPrinter::printMVEVectorList(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Reg = MI->getOperand(OpNum).getReg();
const char *Prefix = "{";
for (unsigned i = 0; i < NumRegs; i++) {
O << Prefix;
printRegName(O, MRI.getSubReg(Reg, ARM::qsub_0 + i));
Prefix = ", ";
}
O << "}";
}
template<int64_t Angle, int64_t Remainder>
void ARMInstPrinter::printComplexRotationOp(const MCInst *MI, unsigned OpNo,
const MCSubtargetInfo &STI,
raw_ostream &O) {
unsigned Val = MI->getOperand(OpNo).getImm();
O << "#" << (Val * Angle) + Remainder;
}
void ARMInstPrinter::printVPTPredicateOperand(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
ARMVCC::VPTCodes CC = (ARMVCC::VPTCodes)MI->getOperand(OpNum).getImm();
if (CC != ARMVCC::None)
O << ARMVPTPredToString(CC);
}
void ARMInstPrinter::printVPTMask(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
// (3 - the number of trailing zeroes) is the number of them / else.
unsigned Mask = MI->getOperand(OpNum).getImm();
unsigned NumTZ = countTrailingZeros(Mask);
assert(NumTZ <= 3 && "Invalid VPT mask!");
for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
bool T = ((Mask >> Pos) & 1) == 0;
if (T)
O << 't';
else
O << 'e';
}
}
void ARMInstPrinter::printMveSaturateOp(const MCInst *MI, unsigned OpNum,
const MCSubtargetInfo &STI,
raw_ostream &O) {
uint32_t Val = MI->getOperand(OpNum).getImm();
assert(Val <= 1 && "Invalid MVE saturate operand");
O << "#" << (Val == 1 ? 48 : 64);
}
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