| //===-- 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 "ARMInstPrinter.h" |
| #include "MCTargetDesc/ARMBaseInfo.h" |
| #include "MCTargetDesc/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; |
| |
| #define GET_INSTRUCTION_NAME |
| #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) { |
| if (imm == 0) |
| return 32; |
| return imm; |
| } |
| |
| |
| ARMInstPrinter::ARMInstPrinter(const MCAsmInfo &MAI, |
| const MCSubtargetInfo &STI) : |
| MCInstPrinter(MAI) { |
| // Initialize the set of available features. |
| setAvailableFeatures(STI.getFeatureBits()); |
| } |
| |
| StringRef ARMInstPrinter::getOpcodeName(unsigned Opcode) const { |
| return getInstructionName(Opcode); |
| } |
| |
| void ARMInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const { |
| OS << getRegisterName(RegNo); |
| } |
| |
| void ARMInstPrinter::printInst(const MCInst *MI, raw_ostream &O, |
| StringRef Annot) { |
| unsigned Opcode = MI->getOpcode(); |
| |
| // Check for MOVs and print canonical forms, instead. |
| if (Opcode == 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, O); |
| printPredicateOperand(MI, 4, O); |
| |
| O << '\t' << getRegisterName(Dst.getReg()) |
| << ", " << getRegisterName(MO1.getReg()); |
| |
| O << ", " << getRegisterName(MO2.getReg()); |
| assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0); |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| if (Opcode == 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, O); |
| printPredicateOperand(MI, 3, O); |
| |
| O << '\t' << getRegisterName(Dst.getReg()) |
| << ", " << getRegisterName(MO1.getReg()); |
| |
| if (ARM_AM::getSORegShOp(MO2.getImm()) == ARM_AM::rrx) { |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| O << ", #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm())); |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| |
| // A8.6.123 PUSH |
| if ((Opcode == ARM::STMDB_UPD || Opcode == ARM::t2STMDB_UPD) && |
| MI->getOperand(0).getReg() == ARM::SP) { |
| O << '\t' << "push"; |
| printPredicateOperand(MI, 2, O); |
| if (Opcode == ARM::t2STMDB_UPD) |
| O << ".w"; |
| O << '\t'; |
| printRegisterList(MI, 4, O); |
| printAnnotation(O, Annot); |
| return; |
| } |
| if (Opcode == ARM::STR_PRE_IMM && MI->getOperand(2).getReg() == ARM::SP && |
| MI->getOperand(3).getImm() == -4) { |
| O << '\t' << "push"; |
| printPredicateOperand(MI, 4, O); |
| O << "\t{" << getRegisterName(MI->getOperand(1).getReg()) << "}"; |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| // A8.6.122 POP |
| if ((Opcode == ARM::LDMIA_UPD || Opcode == ARM::t2LDMIA_UPD) && |
| MI->getOperand(0).getReg() == ARM::SP) { |
| O << '\t' << "pop"; |
| printPredicateOperand(MI, 2, O); |
| if (Opcode == ARM::t2LDMIA_UPD) |
| O << ".w"; |
| O << '\t'; |
| printRegisterList(MI, 4, O); |
| printAnnotation(O, Annot); |
| return; |
| } |
| if (Opcode == ARM::LDR_POST_IMM && MI->getOperand(2).getReg() == ARM::SP && |
| MI->getOperand(4).getImm() == 4) { |
| O << '\t' << "pop"; |
| printPredicateOperand(MI, 5, O); |
| O << "\t{" << getRegisterName(MI->getOperand(0).getReg()) << "}"; |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| |
| // A8.6.355 VPUSH |
| if ((Opcode == ARM::VSTMSDB_UPD || Opcode == ARM::VSTMDDB_UPD) && |
| MI->getOperand(0).getReg() == ARM::SP) { |
| O << '\t' << "vpush"; |
| printPredicateOperand(MI, 2, O); |
| O << '\t'; |
| printRegisterList(MI, 4, O); |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| // A8.6.354 VPOP |
| if ((Opcode == ARM::VLDMSIA_UPD || Opcode == ARM::VLDMDIA_UPD) && |
| MI->getOperand(0).getReg() == ARM::SP) { |
| O << '\t' << "vpop"; |
| printPredicateOperand(MI, 2, O); |
| O << '\t'; |
| printRegisterList(MI, 4, O); |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| if (Opcode == 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, O); |
| O << '\t' << getRegisterName(BaseReg); |
| if (Writeback) O << "!"; |
| O << ", "; |
| printRegisterList(MI, 3, O); |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| // Thumb1 NOP |
| if (Opcode == ARM::tMOVr && MI->getOperand(0).getReg() == ARM::R8 && |
| MI->getOperand(1).getReg() == ARM::R8) { |
| O << "\tnop"; |
| printPredicateOperand(MI, 2, O); |
| printAnnotation(O, Annot); |
| return; |
| } |
| |
| printInstruction(MI, O); |
| printAnnotation(O, Annot); |
| } |
| |
| void ARMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo, |
| raw_ostream &O) { |
| const MCOperand &Op = MI->getOperand(OpNo); |
| if (Op.isReg()) { |
| unsigned Reg = Op.getReg(); |
| O << getRegisterName(Reg); |
| } else if (Op.isImm()) { |
| O << '#' << Op.getImm(); |
| } else { |
| assert(Op.isExpr() && "unknown operand kind in printOperand"); |
| // If a symbolic branch target was added as a constant expression then print |
| // that address in hex. |
| const MCConstantExpr *BranchTarget = dyn_cast<MCConstantExpr>(Op.getExpr()); |
| int64_t Address; |
| if (BranchTarget && BranchTarget->EvaluateAsAbsolute(Address)) { |
| O << "0x"; |
| O.write_hex(Address); |
| } |
| else { |
| // Otherwise, just print the expression. |
| O << *Op.getExpr(); |
| } |
| } |
| } |
| |
| void ARMInstPrinter::printT2LdrLabelOperand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| const MCOperand &MO1 = MI->getOperand(OpNum); |
| if (MO1.isExpr()) |
| O << *MO1.getExpr(); |
| else if (MO1.isImm()) |
| O << "[pc, #" << MO1.getImm() << "]"; |
| else |
| llvm_unreachable("Unknown LDR label operand?"); |
| } |
| |
| // 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, |
| 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 (ShOpc == ARM_AM::rrx) |
| return; |
| |
| O << ' ' << getRegisterName(MO2.getReg()); |
| assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0); |
| } |
| |
| void ARMInstPrinter::printSORegImmOperand(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()); |
| |
| // Print the shift opc. |
| ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm()); |
| O << ", " << ARM_AM::getShiftOpcStr(ShOpc); |
| if (ShOpc == ARM_AM::rrx) |
| return; |
| O << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm())); |
| } |
| |
| |
| //===--------------------------------------------------------------------===// |
| // Addressing Mode #2 |
| //===--------------------------------------------------------------------===// |
| |
| void ARMInstPrinter::printAM2PreOrOffsetIndexOp(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); |
| |
| 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::printAM2PostIndexOp(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); |
| |
| O << "[" << getRegisterName(MO1.getReg()) << "], "; |
| |
| if (!MO2.getReg()) { |
| unsigned ImmOffs = ARM_AM::getAM2Offset(MO3.getImm()); |
| O << '#' |
| << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm())) |
| << ImmOffs; |
| 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; |
| } |
| |
| void ARMInstPrinter::printAddrModeTBB(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()) << ", " |
| << getRegisterName(MO2.getReg()) << "]"; |
| } |
| |
| void ARMInstPrinter::printAddrModeTBH(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()) << ", " |
| << getRegisterName(MO2.getReg()) << ", lsl #1]"; |
| } |
| |
| void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op, |
| 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, O); |
| return; |
| } |
| |
| const MCOperand &MO3 = MI->getOperand(Op+2); |
| unsigned IdxMode = ARM_AM::getAM2IdxMode(MO3.getImm()); |
| |
| if (IdxMode == ARMII::IndexModePost) { |
| printAM2PostIndexOp(MI, Op, O); |
| return; |
| } |
| printAM2PreOrOffsetIndexOp(MI, Op, 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; |
| } |
| |
| //===--------------------------------------------------------------------===// |
| // Addressing Mode #3 |
| //===--------------------------------------------------------------------===// |
| |
| void ARMInstPrinter::printAM3PostIndexOp(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); |
| |
| O << "[" << getRegisterName(MO1.getReg()) << "], "; |
| |
| if (MO2.getReg()) { |
| O << (char)ARM_AM::getAM3Op(MO3.getImm()) |
| << getRegisterName(MO2.getReg()); |
| return; |
| } |
| |
| unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm()); |
| O << '#' |
| << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm())) |
| << ImmOffs; |
| } |
| |
| void ARMInstPrinter::printAM3PreOrOffsetIndexOp(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); |
| |
| O << '[' << getRegisterName(MO1.getReg()); |
| |
| if (MO2.getReg()) { |
| O << ", " << getAddrOpcStr(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::printAddrMode3Operand(const MCInst *MI, unsigned Op, |
| raw_ostream &O) { |
| const MCOperand &MO3 = MI->getOperand(Op+2); |
| unsigned IdxMode = ARM_AM::getAM3IdxMode(MO3.getImm()); |
| |
| if (IdxMode == ARMII::IndexModePost) { |
| printAM3PostIndexOp(MI, Op, O); |
| return; |
| } |
| printAM3PreOrOffsetIndexOp(MI, Op, 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 << getAddrOpcStr(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::printPostIdxImm8Operand(const MCInst *MI, |
| unsigned OpNum, |
| raw_ostream &O) { |
| const MCOperand &MO = MI->getOperand(OpNum); |
| unsigned Imm = MO.getImm(); |
| O << '#' << ((Imm & 256) ? "" : "-") << (Imm & 0xff); |
| } |
| |
| void ARMInstPrinter::printPostIdxRegOperand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| const MCOperand &MO1 = MI->getOperand(OpNum); |
| const MCOperand &MO2 = MI->getOperand(OpNum+1); |
| |
| O << (MO2.getImm() ? "" : "-") << getRegisterName(MO1.getReg()); |
| } |
| |
| void ARMInstPrinter::printPostIdxImm8s4Operand(const MCInst *MI, |
| unsigned OpNum, |
| raw_ostream &O) { |
| const MCOperand &MO = MI->getOperand(OpNum); |
| unsigned Imm = MO.getImm(); |
| O << '#' << ((Imm & 256) ? "" : "-") << ((Imm & 0xff) << 2); |
| } |
| |
| |
| void ARMInstPrinter::printLdStmModeOperand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MI->getOperand(OpNum) |
| .getImm()); |
| O << ARM_AM::getAMSubModeStr(Mode); |
| } |
| |
| void ARMInstPrinter::printAddrMode5Operand(const MCInst *MI, unsigned OpNum, |
| 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, O); |
| return; |
| } |
| |
| O << "[" << getRegisterName(MO1.getReg()); |
| |
| unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm()); |
| unsigned Op = ARM_AM::getAM5Op(MO2.getImm()); |
| if (ImmOffs || Op == ARM_AM::sub) { |
| 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::printAddrMode7Operand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| const MCOperand &MO1 = MI->getOperand(OpNum); |
| O << "[" << getRegisterName(MO1.getReg()) << "]"; |
| } |
| |
| 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::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(); |
| bool isASR = (ShiftOp & (1 << 5)) != 0; |
| unsigned Amt = ShiftOp & 0x1f; |
| if (isASR) |
| O << ", asr #" << (Amt == 0 ? 32 : Amt); |
| else if (Amt) |
| O << ", lsl #" << Amt; |
| } |
| |
| void ARMInstPrinter::printPKHLSLShiftImm(const MCInst *MI, unsigned OpNum, |
| 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 #" << Imm; |
| } |
| |
| void ARMInstPrinter::printPKHASRShiftImm(const MCInst *MI, unsigned OpNum, |
| 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 #" << Imm; |
| } |
| |
| 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::printSetendOperand(const MCInst *MI, unsigned OpNum, |
| 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, |
| raw_ostream &O) { |
| const MCOperand &Op = MI->getOperand(OpNum); |
| O << ARM_PROC::IModToString(Op.getImm()); |
| } |
| |
| void ARMInstPrinter::printCPSIFlag(const MCInst *MI, unsigned OpNum, |
| 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, |
| raw_ostream &O) { |
| const MCOperand &Op = MI->getOperand(OpNum); |
| unsigned SpecRegRBit = Op.getImm() >> 4; |
| unsigned Mask = Op.getImm() & 0xf; |
| |
| if (getAvailableFeatures() & ARM::FeatureMClass) { |
| switch (Op.getImm()) { |
| default: assert(0 && "Unexpected mask value!"); |
| case 0: O << "apsr"; return; |
| case 1: O << "iapsr"; return; |
| case 2: O << "eapsr"; return; |
| case 3: O << "xpsr"; return; |
| case 5: O << "ipsr"; return; |
| case 6: O << "epsr"; return; |
| case 7: O << "iepsr"; return; |
| case 8: O << "msp"; return; |
| case 9: O << "psp"; return; |
| case 16: O << "primask"; return; |
| case 17: O << "basepri"; return; |
| case 18: O << "basepri_max"; return; |
| case 19: O << "faultmask"; return; |
| case 20: O << "control"; return; |
| } |
| } |
| |
| // As special cases, CPSR_f, CPSR_s and CPSR_fs prefer printing as |
| // APSR_nzcvq, APSR_g and APSRnzcvqg, respectively. |
| if (!SpecRegRBit && (Mask == 8 || Mask == 4 || Mask == 12)) { |
| O << "APSR_"; |
| switch (Mask) { |
| default: assert(0); |
| case 4: O << "g"; return; |
| case 8: O << "nzcvq"; return; |
| case 12: O << "nzcvqg"; return; |
| } |
| llvm_unreachable("Unexpected mask value!"); |
| } |
| |
| 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::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::printNoHashImmediate(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| O << MI->getOperand(OpNum).getImm(); |
| } |
| |
| void ARMInstPrinter::printPImmediate(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| O << "p" << MI->getOperand(OpNum).getImm(); |
| } |
| |
| void ARMInstPrinter::printCImmediate(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| O << "c" << MI->getOperand(OpNum).getImm(); |
| } |
| |
| void ARMInstPrinter::printCoprocOptionImm(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| O << "{" << MI->getOperand(OpNum).getImm() << "}"; |
| } |
| |
| void ARMInstPrinter::printPCLabel(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| llvm_unreachable("Unhandled PC-relative pseudo-instruction!"); |
| } |
| |
| void ARMInstPrinter::printThumbS4ImmOperand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| O << "#" << MI->getOperand(OpNum).getImm() * 4; |
| } |
| |
| void ARMInstPrinter::printThumbSRImm(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| unsigned Imm = MI->getOperand(OpNum).getImm(); |
| O << "#" << (Imm == 0 ? 32 : Imm); |
| } |
| |
| 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); |
| |
| if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right. |
| printOperand(MI, Op, O); |
| return; |
| } |
| |
| O << "[" << getRegisterName(MO1.getReg()); |
| if (unsigned RegNum = MO2.getReg()) |
| O << ", " << getRegisterName(RegNum); |
| O << "]"; |
| } |
| |
| void ARMInstPrinter::printThumbAddrModeImm5SOperand(const MCInst *MI, |
| unsigned Op, |
| 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, O); |
| return; |
| } |
| |
| O << "[" << getRegisterName(MO1.getReg()); |
| if (unsigned ImmOffs = MO2.getImm()) |
| O << ", #" << ImmOffs * Scale; |
| O << "]"; |
| } |
| |
| void ARMInstPrinter::printThumbAddrModeImm5S1Operand(const MCInst *MI, |
| unsigned Op, |
| raw_ostream &O) { |
| printThumbAddrModeImm5SOperand(MI, Op, O, 1); |
| } |
| |
| void ARMInstPrinter::printThumbAddrModeImm5S2Operand(const MCInst *MI, |
| unsigned Op, |
| raw_ostream &O) { |
| printThumbAddrModeImm5SOperand(MI, Op, O, 2); |
| } |
| |
| void ARMInstPrinter::printThumbAddrModeImm5S4Operand(const MCInst *MI, |
| unsigned Op, |
| raw_ostream &O) { |
| printThumbAddrModeImm5SOperand(MI, Op, O, 4); |
| } |
| |
| void ARMInstPrinter::printThumbAddrModeSPOperand(const MCInst *MI, unsigned Op, |
| raw_ostream &O) { |
| printThumbAddrModeImm5SOperand(MI, Op, 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, |
| 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 << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm())); |
| } |
| |
| void ARMInstPrinter::printAddrModeImm12Operand(const MCInst *MI, unsigned OpNum, |
| 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, O); |
| return; |
| } |
| |
| O << "[" << getRegisterName(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 << ", #-" << -OffImm; |
| else if (OffImm > 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 == INT32_MIN) |
| O << ", #-0"; |
| else 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::printT2AddrModeImm0_1020s4Operand(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()) |
| O << ", #" << MO2.getImm() * 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 |
| 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 << ", "; |
| 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::printFPImmOperand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| const MCOperand &MO = MI->getOperand(OpNum); |
| O << '#' << ARM_AM::getFPImmFloat(MO.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); |
| } |
| |
| void ARMInstPrinter::printImmPlusOneOperand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| unsigned Imm = MI->getOperand(OpNum).getImm(); |
| O << "#" << Imm + 1; |
| } |
| |
| void ARMInstPrinter::printRotImmOperand(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| unsigned Imm = MI->getOperand(OpNum).getImm(); |
| if (Imm == 0) |
| return; |
| O << ", ror #"; |
| switch (Imm) { |
| default: assert (0 && "illegal ror immediate!"); |
| case 1: O << "8"; break; |
| case 2: O << "16"; break; |
| case 3: O << "24"; break; |
| } |
| } |
| |
| void ARMInstPrinter::printVectorIndex(const MCInst *MI, unsigned OpNum, |
| raw_ostream &O) { |
| O << "[" << MI->getOperand(OpNum).getImm() << "]"; |
| } |
