1 //===-- ARMInstPrinter.cpp - Convert ARM MCInst to assembly syntax --------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This class prints an ARM MCInst to a .s file.
12 //===----------------------------------------------------------------------===//
14 #define DEBUG_TYPE "asm-printer"
15 #include "ARMInstPrinter.h"
16 #include "MCTargetDesc/ARMBaseInfo.h"
17 #include "MCTargetDesc/ARMAddressingModes.h"
18 #include "llvm/MC/MCInst.h"
19 #include "llvm/MC/MCAsmInfo.h"
20 #include "llvm/MC/MCExpr.h"
21 #include "llvm/MC/MCInstrInfo.h"
22 #include "llvm/MC/MCRegisterInfo.h"
23 #include "llvm/Support/raw_ostream.h"
26 #include "ARMGenAsmWriter.inc"
28 /// translateShiftImm - Convert shift immediate from 0-31 to 1-32 for printing.
30 /// getSORegOffset returns an integer from 0-31, representing '32' as 0.
31 static unsigned translateShiftImm(unsigned imm) {
38 ARMInstPrinter::ARMInstPrinter(const MCAsmInfo &MAI,
39 const MCInstrInfo &MII,
40 const MCRegisterInfo &MRI,
41 const MCSubtargetInfo &STI) :
42 MCInstPrinter(MAI, MII, MRI) {
43 // Initialize the set of available features.
44 setAvailableFeatures(STI.getFeatureBits());
47 StringRef ARMInstPrinter::getOpcodeName(unsigned Opcode) const {
48 return MII.getName(Opcode);
51 void ARMInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
52 OS << getRegisterName(RegNo);
55 void ARMInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
57 unsigned Opcode = MI->getOpcode();
59 // Check for MOVs and print canonical forms, instead.
60 if (Opcode == ARM::MOVsr) {
61 // FIXME: Thumb variants?
62 const MCOperand &Dst = MI->getOperand(0);
63 const MCOperand &MO1 = MI->getOperand(1);
64 const MCOperand &MO2 = MI->getOperand(2);
65 const MCOperand &MO3 = MI->getOperand(3);
67 O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO3.getImm()));
68 printSBitModifierOperand(MI, 6, O);
69 printPredicateOperand(MI, 4, O);
71 O << '\t' << getRegisterName(Dst.getReg())
72 << ", " << getRegisterName(MO1.getReg());
74 O << ", " << getRegisterName(MO2.getReg());
75 assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
76 printAnnotation(O, Annot);
80 if (Opcode == ARM::MOVsi) {
81 // FIXME: Thumb variants?
82 const MCOperand &Dst = MI->getOperand(0);
83 const MCOperand &MO1 = MI->getOperand(1);
84 const MCOperand &MO2 = MI->getOperand(2);
86 O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO2.getImm()));
87 printSBitModifierOperand(MI, 5, O);
88 printPredicateOperand(MI, 3, O);
90 O << '\t' << getRegisterName(Dst.getReg())
91 << ", " << getRegisterName(MO1.getReg());
93 if (ARM_AM::getSORegShOp(MO2.getImm()) == ARM_AM::rrx) {
94 printAnnotation(O, Annot);
98 O << ", #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
99 printAnnotation(O, Annot);
105 if ((Opcode == ARM::STMDB_UPD || Opcode == ARM::t2STMDB_UPD) &&
106 MI->getOperand(0).getReg() == ARM::SP &&
107 MI->getNumOperands() > 5) {
108 // Should only print PUSH if there are at least two registers in the list.
110 printPredicateOperand(MI, 2, O);
111 if (Opcode == ARM::t2STMDB_UPD)
114 printRegisterList(MI, 4, O);
115 printAnnotation(O, Annot);
118 if (Opcode == ARM::STR_PRE_IMM && MI->getOperand(2).getReg() == ARM::SP &&
119 MI->getOperand(3).getImm() == -4) {
121 printPredicateOperand(MI, 4, O);
122 O << "\t{" << getRegisterName(MI->getOperand(1).getReg()) << "}";
123 printAnnotation(O, Annot);
128 if ((Opcode == ARM::LDMIA_UPD || Opcode == ARM::t2LDMIA_UPD) &&
129 MI->getOperand(0).getReg() == ARM::SP &&
130 MI->getNumOperands() > 5) {
131 // Should only print POP if there are at least two registers in the list.
133 printPredicateOperand(MI, 2, O);
134 if (Opcode == ARM::t2LDMIA_UPD)
137 printRegisterList(MI, 4, O);
138 printAnnotation(O, Annot);
141 if (Opcode == ARM::LDR_POST_IMM && MI->getOperand(2).getReg() == ARM::SP &&
142 MI->getOperand(4).getImm() == 4) {
144 printPredicateOperand(MI, 5, O);
145 O << "\t{" << getRegisterName(MI->getOperand(0).getReg()) << "}";
146 printAnnotation(O, Annot);
152 if ((Opcode == ARM::VSTMSDB_UPD || Opcode == ARM::VSTMDDB_UPD) &&
153 MI->getOperand(0).getReg() == ARM::SP) {
154 O << '\t' << "vpush";
155 printPredicateOperand(MI, 2, O);
157 printRegisterList(MI, 4, O);
158 printAnnotation(O, Annot);
163 if ((Opcode == ARM::VLDMSIA_UPD || Opcode == ARM::VLDMDIA_UPD) &&
164 MI->getOperand(0).getReg() == ARM::SP) {
166 printPredicateOperand(MI, 2, O);
168 printRegisterList(MI, 4, O);
169 printAnnotation(O, Annot);
173 if (Opcode == ARM::tLDMIA) {
174 bool Writeback = true;
175 unsigned BaseReg = MI->getOperand(0).getReg();
176 for (unsigned i = 3; i < MI->getNumOperands(); ++i) {
177 if (MI->getOperand(i).getReg() == BaseReg)
183 printPredicateOperand(MI, 1, O);
184 O << '\t' << getRegisterName(BaseReg);
185 if (Writeback) O << "!";
187 printRegisterList(MI, 3, O);
188 printAnnotation(O, Annot);
193 if (Opcode == ARM::tMOVr && MI->getOperand(0).getReg() == ARM::R8 &&
194 MI->getOperand(1).getReg() == ARM::R8) {
196 printPredicateOperand(MI, 2, O);
197 printAnnotation(O, Annot);
201 printInstruction(MI, O);
202 printAnnotation(O, Annot);
205 void ARMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
207 const MCOperand &Op = MI->getOperand(OpNo);
209 unsigned Reg = Op.getReg();
210 O << getRegisterName(Reg);
211 } else if (Op.isImm()) {
212 O << '#' << Op.getImm();
214 assert(Op.isExpr() && "unknown operand kind in printOperand");
215 // If a symbolic branch target was added as a constant expression then print
216 // that address in hex.
217 const MCConstantExpr *BranchTarget = dyn_cast<MCConstantExpr>(Op.getExpr());
219 if (BranchTarget && BranchTarget->EvaluateAsAbsolute(Address)) {
221 O.write_hex(Address);
224 // Otherwise, just print the expression.
230 void ARMInstPrinter::printT2LdrLabelOperand(const MCInst *MI, unsigned OpNum,
232 const MCOperand &MO1 = MI->getOperand(OpNum);
235 else if (MO1.isImm())
236 O << "[pc, #" << MO1.getImm() << "]";
238 llvm_unreachable("Unknown LDR label operand?");
241 // so_reg is a 4-operand unit corresponding to register forms of the A5.1
242 // "Addressing Mode 1 - Data-processing operands" forms. This includes:
244 // REG REG 0,SH_OPC - e.g. R5, ROR R3
245 // REG 0 IMM,SH_OPC - e.g. R5, LSL #3
246 void ARMInstPrinter::printSORegRegOperand(const MCInst *MI, unsigned OpNum,
248 const MCOperand &MO1 = MI->getOperand(OpNum);
249 const MCOperand &MO2 = MI->getOperand(OpNum+1);
250 const MCOperand &MO3 = MI->getOperand(OpNum+2);
252 O << getRegisterName(MO1.getReg());
254 // Print the shift opc.
255 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO3.getImm());
256 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
257 if (ShOpc == ARM_AM::rrx)
260 O << ' ' << getRegisterName(MO2.getReg());
261 assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
264 void ARMInstPrinter::printSORegImmOperand(const MCInst *MI, unsigned OpNum,
266 const MCOperand &MO1 = MI->getOperand(OpNum);
267 const MCOperand &MO2 = MI->getOperand(OpNum+1);
269 O << getRegisterName(MO1.getReg());
271 // Print the shift opc.
272 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
273 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
274 if (ShOpc == ARM_AM::rrx)
276 O << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
280 //===--------------------------------------------------------------------===//
281 // Addressing Mode #2
282 //===--------------------------------------------------------------------===//
284 void ARMInstPrinter::printAM2PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
286 const MCOperand &MO1 = MI->getOperand(Op);
287 const MCOperand &MO2 = MI->getOperand(Op+1);
288 const MCOperand &MO3 = MI->getOperand(Op+2);
290 O << "[" << getRegisterName(MO1.getReg());
293 if (ARM_AM::getAM2Offset(MO3.getImm())) // Don't print +0.
295 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
296 << ARM_AM::getAM2Offset(MO3.getImm());
302 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
303 << getRegisterName(MO2.getReg());
305 if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
307 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
312 void ARMInstPrinter::printAM2PostIndexOp(const MCInst *MI, unsigned Op,
314 const MCOperand &MO1 = MI->getOperand(Op);
315 const MCOperand &MO2 = MI->getOperand(Op+1);
316 const MCOperand &MO3 = MI->getOperand(Op+2);
318 O << "[" << getRegisterName(MO1.getReg()) << "], ";
321 unsigned ImmOffs = ARM_AM::getAM2Offset(MO3.getImm());
323 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
328 O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
329 << getRegisterName(MO2.getReg());
331 if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
333 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
337 void ARMInstPrinter::printAddrModeTBB(const MCInst *MI, unsigned Op,
339 const MCOperand &MO1 = MI->getOperand(Op);
340 const MCOperand &MO2 = MI->getOperand(Op+1);
341 O << "[" << getRegisterName(MO1.getReg()) << ", "
342 << getRegisterName(MO2.getReg()) << "]";
345 void ARMInstPrinter::printAddrModeTBH(const MCInst *MI, unsigned Op,
347 const MCOperand &MO1 = MI->getOperand(Op);
348 const MCOperand &MO2 = MI->getOperand(Op+1);
349 O << "[" << getRegisterName(MO1.getReg()) << ", "
350 << getRegisterName(MO2.getReg()) << ", lsl #1]";
353 void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
355 const MCOperand &MO1 = MI->getOperand(Op);
357 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
358 printOperand(MI, Op, O);
362 const MCOperand &MO3 = MI->getOperand(Op+2);
363 unsigned IdxMode = ARM_AM::getAM2IdxMode(MO3.getImm());
365 if (IdxMode == ARMII::IndexModePost) {
366 printAM2PostIndexOp(MI, Op, O);
369 printAM2PreOrOffsetIndexOp(MI, Op, O);
372 void ARMInstPrinter::printAddrMode2OffsetOperand(const MCInst *MI,
375 const MCOperand &MO1 = MI->getOperand(OpNum);
376 const MCOperand &MO2 = MI->getOperand(OpNum+1);
379 unsigned ImmOffs = ARM_AM::getAM2Offset(MO2.getImm());
381 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
386 O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
387 << getRegisterName(MO1.getReg());
389 if (unsigned ShImm = ARM_AM::getAM2Offset(MO2.getImm()))
391 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO2.getImm()))
395 //===--------------------------------------------------------------------===//
396 // Addressing Mode #3
397 //===--------------------------------------------------------------------===//
399 void ARMInstPrinter::printAM3PostIndexOp(const MCInst *MI, unsigned Op,
401 const MCOperand &MO1 = MI->getOperand(Op);
402 const MCOperand &MO2 = MI->getOperand(Op+1);
403 const MCOperand &MO3 = MI->getOperand(Op+2);
405 O << "[" << getRegisterName(MO1.getReg()) << "], ";
408 O << (char)ARM_AM::getAM3Op(MO3.getImm())
409 << getRegisterName(MO2.getReg());
413 unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm());
415 << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
419 void ARMInstPrinter::printAM3PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
421 const MCOperand &MO1 = MI->getOperand(Op);
422 const MCOperand &MO2 = MI->getOperand(Op+1);
423 const MCOperand &MO3 = MI->getOperand(Op+2);
425 O << '[' << getRegisterName(MO1.getReg());
428 O << ", " << getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
429 << getRegisterName(MO2.getReg()) << ']';
433 if (unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm()))
435 << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
440 void ARMInstPrinter::printAddrMode3Operand(const MCInst *MI, unsigned Op,
442 const MCOperand &MO1 = MI->getOperand(Op);
443 if (!MO1.isReg()) { // For label symbolic references.
444 printOperand(MI, Op, O);
448 const MCOperand &MO3 = MI->getOperand(Op+2);
449 unsigned IdxMode = ARM_AM::getAM3IdxMode(MO3.getImm());
451 if (IdxMode == ARMII::IndexModePost) {
452 printAM3PostIndexOp(MI, Op, O);
455 printAM3PreOrOffsetIndexOp(MI, Op, O);
458 void ARMInstPrinter::printAddrMode3OffsetOperand(const MCInst *MI,
461 const MCOperand &MO1 = MI->getOperand(OpNum);
462 const MCOperand &MO2 = MI->getOperand(OpNum+1);
465 O << getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm()))
466 << getRegisterName(MO1.getReg());
470 unsigned ImmOffs = ARM_AM::getAM3Offset(MO2.getImm());
472 << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm()))
476 void ARMInstPrinter::printPostIdxImm8Operand(const MCInst *MI,
479 const MCOperand &MO = MI->getOperand(OpNum);
480 unsigned Imm = MO.getImm();
481 O << '#' << ((Imm & 256) ? "" : "-") << (Imm & 0xff);
484 void ARMInstPrinter::printPostIdxRegOperand(const MCInst *MI, unsigned OpNum,
486 const MCOperand &MO1 = MI->getOperand(OpNum);
487 const MCOperand &MO2 = MI->getOperand(OpNum+1);
489 O << (MO2.getImm() ? "" : "-") << getRegisterName(MO1.getReg());
492 void ARMInstPrinter::printPostIdxImm8s4Operand(const MCInst *MI,
495 const MCOperand &MO = MI->getOperand(OpNum);
496 unsigned Imm = MO.getImm();
497 O << '#' << ((Imm & 256) ? "" : "-") << ((Imm & 0xff) << 2);
501 void ARMInstPrinter::printLdStmModeOperand(const MCInst *MI, unsigned OpNum,
503 ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MI->getOperand(OpNum)
505 O << ARM_AM::getAMSubModeStr(Mode);
508 void ARMInstPrinter::printAddrMode5Operand(const MCInst *MI, unsigned OpNum,
510 const MCOperand &MO1 = MI->getOperand(OpNum);
511 const MCOperand &MO2 = MI->getOperand(OpNum+1);
513 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
514 printOperand(MI, OpNum, O);
518 O << "[" << getRegisterName(MO1.getReg());
520 unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm());
521 unsigned Op = ARM_AM::getAM5Op(MO2.getImm());
522 if (ImmOffs || Op == ARM_AM::sub) {
524 << ARM_AM::getAddrOpcStr(ARM_AM::getAM5Op(MO2.getImm()))
530 void ARMInstPrinter::printAddrMode6Operand(const MCInst *MI, unsigned OpNum,
532 const MCOperand &MO1 = MI->getOperand(OpNum);
533 const MCOperand &MO2 = MI->getOperand(OpNum+1);
535 O << "[" << getRegisterName(MO1.getReg());
537 // FIXME: Both darwin as and GNU as violate ARM docs here.
538 O << ", :" << (MO2.getImm() << 3);
543 void ARMInstPrinter::printAddrMode7Operand(const MCInst *MI, unsigned OpNum,
545 const MCOperand &MO1 = MI->getOperand(OpNum);
546 O << "[" << getRegisterName(MO1.getReg()) << "]";
549 void ARMInstPrinter::printAddrMode6OffsetOperand(const MCInst *MI,
552 const MCOperand &MO = MI->getOperand(OpNum);
553 if (MO.getReg() == 0)
556 O << ", " << getRegisterName(MO.getReg());
559 void ARMInstPrinter::printBitfieldInvMaskImmOperand(const MCInst *MI,
562 const MCOperand &MO = MI->getOperand(OpNum);
563 uint32_t v = ~MO.getImm();
564 int32_t lsb = CountTrailingZeros_32(v);
565 int32_t width = (32 - CountLeadingZeros_32 (v)) - lsb;
566 assert(MO.isImm() && "Not a valid bf_inv_mask_imm value!");
567 O << '#' << lsb << ", #" << width;
570 void ARMInstPrinter::printMemBOption(const MCInst *MI, unsigned OpNum,
572 unsigned val = MI->getOperand(OpNum).getImm();
573 O << ARM_MB::MemBOptToString(val);
576 void ARMInstPrinter::printShiftImmOperand(const MCInst *MI, unsigned OpNum,
578 unsigned ShiftOp = MI->getOperand(OpNum).getImm();
579 bool isASR = (ShiftOp & (1 << 5)) != 0;
580 unsigned Amt = ShiftOp & 0x1f;
582 O << ", asr #" << (Amt == 0 ? 32 : Amt);
584 O << ", lsl #" << Amt;
587 void ARMInstPrinter::printPKHLSLShiftImm(const MCInst *MI, unsigned OpNum,
589 unsigned Imm = MI->getOperand(OpNum).getImm();
592 assert(Imm > 0 && Imm < 32 && "Invalid PKH shift immediate value!");
593 O << ", lsl #" << Imm;
596 void ARMInstPrinter::printPKHASRShiftImm(const MCInst *MI, unsigned OpNum,
598 unsigned Imm = MI->getOperand(OpNum).getImm();
599 // A shift amount of 32 is encoded as 0.
602 assert(Imm > 0 && Imm <= 32 && "Invalid PKH shift immediate value!");
603 O << ", asr #" << Imm;
606 void ARMInstPrinter::printRegisterList(const MCInst *MI, unsigned OpNum,
609 for (unsigned i = OpNum, e = MI->getNumOperands(); i != e; ++i) {
610 if (i != OpNum) O << ", ";
611 O << getRegisterName(MI->getOperand(i).getReg());
616 void ARMInstPrinter::printSetendOperand(const MCInst *MI, unsigned OpNum,
618 const MCOperand &Op = MI->getOperand(OpNum);
625 void ARMInstPrinter::printCPSIMod(const MCInst *MI, unsigned OpNum,
627 const MCOperand &Op = MI->getOperand(OpNum);
628 O << ARM_PROC::IModToString(Op.getImm());
631 void ARMInstPrinter::printCPSIFlag(const MCInst *MI, unsigned OpNum,
633 const MCOperand &Op = MI->getOperand(OpNum);
634 unsigned IFlags = Op.getImm();
635 for (int i=2; i >= 0; --i)
636 if (IFlags & (1 << i))
637 O << ARM_PROC::IFlagsToString(1 << i);
643 void ARMInstPrinter::printMSRMaskOperand(const MCInst *MI, unsigned OpNum,
645 const MCOperand &Op = MI->getOperand(OpNum);
646 unsigned SpecRegRBit = Op.getImm() >> 4;
647 unsigned Mask = Op.getImm() & 0xf;
649 if (getAvailableFeatures() & ARM::FeatureMClass) {
650 switch (Op.getImm()) {
651 default: llvm_unreachable("Unexpected mask value!");
652 case 0: O << "apsr"; return;
653 case 1: O << "iapsr"; return;
654 case 2: O << "eapsr"; return;
655 case 3: O << "xpsr"; return;
656 case 5: O << "ipsr"; return;
657 case 6: O << "epsr"; return;
658 case 7: O << "iepsr"; return;
659 case 8: O << "msp"; return;
660 case 9: O << "psp"; return;
661 case 16: O << "primask"; return;
662 case 17: O << "basepri"; return;
663 case 18: O << "basepri_max"; return;
664 case 19: O << "faultmask"; return;
665 case 20: O << "control"; return;
669 // As special cases, CPSR_f, CPSR_s and CPSR_fs prefer printing as
670 // APSR_nzcvq, APSR_g and APSRnzcvqg, respectively.
671 if (!SpecRegRBit && (Mask == 8 || Mask == 4 || Mask == 12)) {
674 default: llvm_unreachable("Unexpected mask value!");
675 case 4: O << "g"; return;
676 case 8: O << "nzcvq"; return;
677 case 12: O << "nzcvqg"; return;
688 if (Mask & 8) O << 'f';
689 if (Mask & 4) O << 's';
690 if (Mask & 2) O << 'x';
691 if (Mask & 1) O << 'c';
695 void ARMInstPrinter::printPredicateOperand(const MCInst *MI, unsigned OpNum,
697 ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
698 // Handle the undefined 15 CC value here for printing so we don't abort().
699 if ((unsigned)CC == 15)
701 else if (CC != ARMCC::AL)
702 O << ARMCondCodeToString(CC);
705 void ARMInstPrinter::printMandatoryPredicateOperand(const MCInst *MI,
708 ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
709 O << ARMCondCodeToString(CC);
712 void ARMInstPrinter::printSBitModifierOperand(const MCInst *MI, unsigned OpNum,
714 if (MI->getOperand(OpNum).getReg()) {
715 assert(MI->getOperand(OpNum).getReg() == ARM::CPSR &&
716 "Expect ARM CPSR register!");
721 void ARMInstPrinter::printNoHashImmediate(const MCInst *MI, unsigned OpNum,
723 O << MI->getOperand(OpNum).getImm();
726 void ARMInstPrinter::printPImmediate(const MCInst *MI, unsigned OpNum,
728 O << "p" << MI->getOperand(OpNum).getImm();
731 void ARMInstPrinter::printCImmediate(const MCInst *MI, unsigned OpNum,
733 O << "c" << MI->getOperand(OpNum).getImm();
736 void ARMInstPrinter::printCoprocOptionImm(const MCInst *MI, unsigned OpNum,
738 O << "{" << MI->getOperand(OpNum).getImm() << "}";
741 void ARMInstPrinter::printPCLabel(const MCInst *MI, unsigned OpNum,
743 llvm_unreachable("Unhandled PC-relative pseudo-instruction!");
746 void ARMInstPrinter::printThumbS4ImmOperand(const MCInst *MI, unsigned OpNum,
748 O << "#" << MI->getOperand(OpNum).getImm() * 4;
751 void ARMInstPrinter::printThumbSRImm(const MCInst *MI, unsigned OpNum,
753 unsigned Imm = MI->getOperand(OpNum).getImm();
754 O << "#" << (Imm == 0 ? 32 : Imm);
757 void ARMInstPrinter::printThumbITMask(const MCInst *MI, unsigned OpNum,
759 // (3 - the number of trailing zeros) is the number of then / else.
760 unsigned Mask = MI->getOperand(OpNum).getImm();
761 unsigned CondBit0 = Mask >> 4 & 1;
762 unsigned NumTZ = CountTrailingZeros_32(Mask);
763 assert(NumTZ <= 3 && "Invalid IT mask!");
764 for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
765 bool T = ((Mask >> Pos) & 1) == CondBit0;
773 void ARMInstPrinter::printThumbAddrModeRROperand(const MCInst *MI, unsigned Op,
775 const MCOperand &MO1 = MI->getOperand(Op);
776 const MCOperand &MO2 = MI->getOperand(Op + 1);
778 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
779 printOperand(MI, Op, O);
783 O << "[" << getRegisterName(MO1.getReg());
784 if (unsigned RegNum = MO2.getReg())
785 O << ", " << getRegisterName(RegNum);
789 void ARMInstPrinter::printThumbAddrModeImm5SOperand(const MCInst *MI,
793 const MCOperand &MO1 = MI->getOperand(Op);
794 const MCOperand &MO2 = MI->getOperand(Op + 1);
796 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
797 printOperand(MI, Op, O);
801 O << "[" << getRegisterName(MO1.getReg());
802 if (unsigned ImmOffs = MO2.getImm())
803 O << ", #" << ImmOffs * Scale;
807 void ARMInstPrinter::printThumbAddrModeImm5S1Operand(const MCInst *MI,
810 printThumbAddrModeImm5SOperand(MI, Op, O, 1);
813 void ARMInstPrinter::printThumbAddrModeImm5S2Operand(const MCInst *MI,
816 printThumbAddrModeImm5SOperand(MI, Op, O, 2);
819 void ARMInstPrinter::printThumbAddrModeImm5S4Operand(const MCInst *MI,
822 printThumbAddrModeImm5SOperand(MI, Op, O, 4);
825 void ARMInstPrinter::printThumbAddrModeSPOperand(const MCInst *MI, unsigned Op,
827 printThumbAddrModeImm5SOperand(MI, Op, O, 4);
830 // Constant shifts t2_so_reg is a 2-operand unit corresponding to the Thumb2
831 // register with shift forms.
833 // REG IMM, SH_OPC - e.g. R5, LSL #3
834 void ARMInstPrinter::printT2SOOperand(const MCInst *MI, unsigned OpNum,
836 const MCOperand &MO1 = MI->getOperand(OpNum);
837 const MCOperand &MO2 = MI->getOperand(OpNum+1);
839 unsigned Reg = MO1.getReg();
840 O << getRegisterName(Reg);
842 // Print the shift opc.
843 assert(MO2.isImm() && "Not a valid t2_so_reg value!");
844 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
845 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
846 if (ShOpc != ARM_AM::rrx)
847 O << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
850 void ARMInstPrinter::printAddrModeImm12Operand(const MCInst *MI, unsigned OpNum,
852 const MCOperand &MO1 = MI->getOperand(OpNum);
853 const MCOperand &MO2 = MI->getOperand(OpNum+1);
855 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
856 printOperand(MI, OpNum, O);
860 O << "[" << getRegisterName(MO1.getReg());
862 int32_t OffImm = (int32_t)MO2.getImm();
863 bool isSub = OffImm < 0;
864 // Special value for #-0. All others are normal.
865 if (OffImm == INT32_MIN)
868 O << ", #-" << -OffImm;
870 O << ", #" << OffImm;
874 void ARMInstPrinter::printT2AddrModeImm8Operand(const MCInst *MI,
877 const MCOperand &MO1 = MI->getOperand(OpNum);
878 const MCOperand &MO2 = MI->getOperand(OpNum+1);
880 O << "[" << getRegisterName(MO1.getReg());
882 int32_t OffImm = (int32_t)MO2.getImm();
884 if (OffImm == INT32_MIN)
887 O << ", #-" << -OffImm;
889 O << ", #" << OffImm;
893 void ARMInstPrinter::printT2AddrModeImm8s4Operand(const MCInst *MI,
896 const MCOperand &MO1 = MI->getOperand(OpNum);
897 const MCOperand &MO2 = MI->getOperand(OpNum+1);
899 if (!MO1.isReg()) { // For label symbolic references.
900 printOperand(MI, OpNum, O);
904 O << "[" << getRegisterName(MO1.getReg());
906 int32_t OffImm = (int32_t)MO2.getImm() / 4;
909 O << ", #-" << -OffImm * 4;
911 O << ", #" << OffImm * 4;
915 void ARMInstPrinter::printT2AddrModeImm0_1020s4Operand(const MCInst *MI,
918 const MCOperand &MO1 = MI->getOperand(OpNum);
919 const MCOperand &MO2 = MI->getOperand(OpNum+1);
921 O << "[" << getRegisterName(MO1.getReg());
923 O << ", #" << MO2.getImm() * 4;
927 void ARMInstPrinter::printT2AddrModeImm8OffsetOperand(const MCInst *MI,
930 const MCOperand &MO1 = MI->getOperand(OpNum);
931 int32_t OffImm = (int32_t)MO1.getImm();
934 O << ", #-" << -OffImm;
936 O << ", #" << OffImm;
939 void ARMInstPrinter::printT2AddrModeImm8s4OffsetOperand(const MCInst *MI,
942 const MCOperand &MO1 = MI->getOperand(OpNum);
943 int32_t OffImm = (int32_t)MO1.getImm() / 4;
948 O << "#-" << -OffImm * 4;
950 O << "#" << OffImm * 4;
954 void ARMInstPrinter::printT2AddrModeSoRegOperand(const MCInst *MI,
957 const MCOperand &MO1 = MI->getOperand(OpNum);
958 const MCOperand &MO2 = MI->getOperand(OpNum+1);
959 const MCOperand &MO3 = MI->getOperand(OpNum+2);
961 O << "[" << getRegisterName(MO1.getReg());
963 assert(MO2.getReg() && "Invalid so_reg load / store address!");
964 O << ", " << getRegisterName(MO2.getReg());
966 unsigned ShAmt = MO3.getImm();
968 assert(ShAmt <= 3 && "Not a valid Thumb2 addressing mode!");
969 O << ", lsl #" << ShAmt;
974 void ARMInstPrinter::printFPImmOperand(const MCInst *MI, unsigned OpNum,
976 const MCOperand &MO = MI->getOperand(OpNum);
977 O << '#' << ARM_AM::getFPImmFloat(MO.getImm());
980 void ARMInstPrinter::printNEONModImmOperand(const MCInst *MI, unsigned OpNum,
982 unsigned EncodedImm = MI->getOperand(OpNum).getImm();
984 uint64_t Val = ARM_AM::decodeNEONModImm(EncodedImm, EltBits);
989 void ARMInstPrinter::printImmPlusOneOperand(const MCInst *MI, unsigned OpNum,
991 unsigned Imm = MI->getOperand(OpNum).getImm();
995 void ARMInstPrinter::printRotImmOperand(const MCInst *MI, unsigned OpNum,
997 unsigned Imm = MI->getOperand(OpNum).getImm();
1002 default: assert (0 && "illegal ror immediate!");
1003 case 1: O << "8"; break;
1004 case 2: O << "16"; break;
1005 case 3: O << "24"; break;
1009 void ARMInstPrinter::printFBits16(const MCInst *MI, unsigned OpNum,
1011 O << "#" << 16 - MI->getOperand(OpNum).getImm();
1014 void ARMInstPrinter::printFBits32(const MCInst *MI, unsigned OpNum,
1016 O << "#" << 32 - MI->getOperand(OpNum).getImm();
1019 void ARMInstPrinter::printVectorIndex(const MCInst *MI, unsigned OpNum,
1021 O << "[" << MI->getOperand(OpNum).getImm() << "]";
1024 void ARMInstPrinter::printVectorListOne(const MCInst *MI, unsigned OpNum,
1026 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "}";
1029 void ARMInstPrinter::printVectorListTwo(const MCInst *MI, unsigned OpNum,
1031 unsigned Reg = MI->getOperand(OpNum).getReg();
1032 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1033 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_1);
1034 O << "{" << getRegisterName(Reg0) << ", " << getRegisterName(Reg1) << "}";
1037 void ARMInstPrinter::printVectorListTwoSpaced(const MCInst *MI,
1040 unsigned Reg = MI->getOperand(OpNum).getReg();
1041 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1042 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_2);
1043 O << "{" << getRegisterName(Reg0) << ", " << getRegisterName(Reg1) << "}";
1046 void ARMInstPrinter::printVectorListThree(const MCInst *MI, unsigned OpNum,
1048 // Normally, it's not safe to use register enum values directly with
1049 // addition to get the next register, but for VFP registers, the
1050 // sort order is guaranteed because they're all of the form D<n>.
1051 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1052 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << ", "
1053 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "}";
1056 void ARMInstPrinter::printVectorListFour(const MCInst *MI, unsigned OpNum,
1058 // Normally, it's not safe to use register enum values directly with
1059 // addition to get the next register, but for VFP registers, the
1060 // sort order is guaranteed because they're all of the form D<n>.
1061 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1062 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << ", "
1063 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1064 << getRegisterName(MI->getOperand(OpNum).getReg() + 3) << "}";
1067 void ARMInstPrinter::printVectorListOneAllLanes(const MCInst *MI,
1070 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[]}";
1073 void ARMInstPrinter::printVectorListTwoAllLanes(const MCInst *MI,
1076 unsigned Reg = MI->getOperand(OpNum).getReg();
1077 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1078 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_1);
1079 O << "{" << getRegisterName(Reg0) << "[], " << getRegisterName(Reg1) << "[]}";
1082 void ARMInstPrinter::printVectorListThreeAllLanes(const MCInst *MI,
1085 // Normally, it's not safe to use register enum values directly with
1086 // addition to get the next register, but for VFP registers, the
1087 // sort order is guaranteed because they're all of the form D<n>.
1088 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1089 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "[], "
1090 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[]}";
1093 void ARMInstPrinter::printVectorListFourAllLanes(const MCInst *MI,
1096 // Normally, it's not safe to use register enum values directly with
1097 // addition to get the next register, but for VFP registers, the
1098 // sort order is guaranteed because they're all of the form D<n>.
1099 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1100 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "[], "
1101 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1102 << getRegisterName(MI->getOperand(OpNum).getReg() + 3) << "[]}";
1105 void ARMInstPrinter::printVectorListTwoSpacedAllLanes(const MCInst *MI,
1108 unsigned Reg = MI->getOperand(OpNum).getReg();
1109 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1110 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_2);
1111 O << "{" << getRegisterName(Reg0) << "[], " << getRegisterName(Reg1) << "[]}";
1114 void ARMInstPrinter::printVectorListThreeSpacedAllLanes(const MCInst *MI,
1117 // Normally, it's not safe to use register enum values directly with
1118 // addition to get the next register, but for VFP registers, the
1119 // sort order is guaranteed because they're all of the form D<n>.
1120 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1121 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1122 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "[]}";
1125 void ARMInstPrinter::printVectorListFourSpacedAllLanes(const MCInst *MI,
1128 // Normally, it's not safe to use register enum values directly with
1129 // addition to get the next register, but for VFP registers, the
1130 // sort order is guaranteed because they're all of the form D<n>.
1131 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1132 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1133 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "[], "
1134 << getRegisterName(MI->getOperand(OpNum).getReg() + 6) << "[]}";
1137 void ARMInstPrinter::printVectorListThreeSpaced(const MCInst *MI,
1140 // Normally, it's not safe to use register enum values directly with
1141 // addition to get the next register, but for VFP registers, the
1142 // sort order is guaranteed because they're all of the form D<n>.
1143 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1144 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1145 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "}";
1148 void ARMInstPrinter::printVectorListFourSpaced(const MCInst *MI,
1151 // Normally, it's not safe to use register enum values directly with
1152 // addition to get the next register, but for VFP registers, the
1153 // sort order is guaranteed because they're all of the form D<n>.
1154 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1155 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1156 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << ", "
1157 << getRegisterName(MI->getOperand(OpNum).getReg() + 6) << "}";