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/Support/raw_ostream.h"
24 #define GET_INSTRUCTION_NAME
25 #include "ARMGenAsmWriter.inc"
27 /// translateShiftImm - Convert shift immediate from 0-31 to 1-32 for printing.
29 /// getSORegOffset returns an integer from 0-31, representing '32' as 0.
30 static unsigned translateShiftImm(unsigned imm) {
37 ARMInstPrinter::ARMInstPrinter(const MCAsmInfo &MAI,
38 const MCRegisterInfo &MRI,
39 const MCSubtargetInfo &STI) :
40 MCInstPrinter(MAI, MRI) {
41 // Initialize the set of available features.
42 setAvailableFeatures(STI.getFeatureBits());
45 StringRef ARMInstPrinter::getOpcodeName(unsigned Opcode) const {
46 return getInstructionName(Opcode);
49 void ARMInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
50 OS << getRegisterName(RegNo);
53 void ARMInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
55 unsigned Opcode = MI->getOpcode();
57 // Check for MOVs and print canonical forms, instead.
58 if (Opcode == ARM::MOVsr) {
59 // FIXME: Thumb variants?
60 const MCOperand &Dst = MI->getOperand(0);
61 const MCOperand &MO1 = MI->getOperand(1);
62 const MCOperand &MO2 = MI->getOperand(2);
63 const MCOperand &MO3 = MI->getOperand(3);
65 O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO3.getImm()));
66 printSBitModifierOperand(MI, 6, O);
67 printPredicateOperand(MI, 4, O);
69 O << '\t' << getRegisterName(Dst.getReg())
70 << ", " << getRegisterName(MO1.getReg());
72 O << ", " << getRegisterName(MO2.getReg());
73 assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
74 printAnnotation(O, Annot);
78 if (Opcode == ARM::MOVsi) {
79 // FIXME: Thumb variants?
80 const MCOperand &Dst = MI->getOperand(0);
81 const MCOperand &MO1 = MI->getOperand(1);
82 const MCOperand &MO2 = MI->getOperand(2);
84 O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO2.getImm()));
85 printSBitModifierOperand(MI, 5, O);
86 printPredicateOperand(MI, 3, O);
88 O << '\t' << getRegisterName(Dst.getReg())
89 << ", " << getRegisterName(MO1.getReg());
91 if (ARM_AM::getSORegShOp(MO2.getImm()) == ARM_AM::rrx) {
92 printAnnotation(O, Annot);
96 O << ", #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
97 printAnnotation(O, Annot);
103 if ((Opcode == ARM::STMDB_UPD || Opcode == ARM::t2STMDB_UPD) &&
104 MI->getOperand(0).getReg() == ARM::SP &&
105 MI->getNumOperands() > 5) {
106 // Should only print PUSH if there are at least two registers in the list.
108 printPredicateOperand(MI, 2, O);
109 if (Opcode == ARM::t2STMDB_UPD)
112 printRegisterList(MI, 4, O);
113 printAnnotation(O, Annot);
116 if (Opcode == ARM::STR_PRE_IMM && MI->getOperand(2).getReg() == ARM::SP &&
117 MI->getOperand(3).getImm() == -4) {
119 printPredicateOperand(MI, 4, O);
120 O << "\t{" << getRegisterName(MI->getOperand(1).getReg()) << "}";
121 printAnnotation(O, Annot);
126 if ((Opcode == ARM::LDMIA_UPD || Opcode == ARM::t2LDMIA_UPD) &&
127 MI->getOperand(0).getReg() == ARM::SP &&
128 MI->getNumOperands() > 5) {
129 // Should only print POP if there are at least two registers in the list.
131 printPredicateOperand(MI, 2, O);
132 if (Opcode == ARM::t2LDMIA_UPD)
135 printRegisterList(MI, 4, O);
136 printAnnotation(O, Annot);
139 if (Opcode == ARM::LDR_POST_IMM && MI->getOperand(2).getReg() == ARM::SP &&
140 MI->getOperand(4).getImm() == 4) {
142 printPredicateOperand(MI, 5, O);
143 O << "\t{" << getRegisterName(MI->getOperand(0).getReg()) << "}";
144 printAnnotation(O, Annot);
150 if ((Opcode == ARM::VSTMSDB_UPD || Opcode == ARM::VSTMDDB_UPD) &&
151 MI->getOperand(0).getReg() == ARM::SP) {
152 O << '\t' << "vpush";
153 printPredicateOperand(MI, 2, O);
155 printRegisterList(MI, 4, O);
156 printAnnotation(O, Annot);
161 if ((Opcode == ARM::VLDMSIA_UPD || Opcode == ARM::VLDMDIA_UPD) &&
162 MI->getOperand(0).getReg() == ARM::SP) {
164 printPredicateOperand(MI, 2, O);
166 printRegisterList(MI, 4, O);
167 printAnnotation(O, Annot);
171 if (Opcode == ARM::tLDMIA) {
172 bool Writeback = true;
173 unsigned BaseReg = MI->getOperand(0).getReg();
174 for (unsigned i = 3; i < MI->getNumOperands(); ++i) {
175 if (MI->getOperand(i).getReg() == BaseReg)
181 printPredicateOperand(MI, 1, O);
182 O << '\t' << getRegisterName(BaseReg);
183 if (Writeback) O << "!";
185 printRegisterList(MI, 3, O);
186 printAnnotation(O, Annot);
191 if (Opcode == ARM::tMOVr && MI->getOperand(0).getReg() == ARM::R8 &&
192 MI->getOperand(1).getReg() == ARM::R8) {
194 printPredicateOperand(MI, 2, O);
195 printAnnotation(O, Annot);
199 printInstruction(MI, O);
200 printAnnotation(O, Annot);
203 void ARMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
205 const MCOperand &Op = MI->getOperand(OpNo);
207 unsigned Reg = Op.getReg();
208 O << getRegisterName(Reg);
209 } else if (Op.isImm()) {
210 O << '#' << Op.getImm();
212 assert(Op.isExpr() && "unknown operand kind in printOperand");
213 // If a symbolic branch target was added as a constant expression then print
214 // that address in hex.
215 const MCConstantExpr *BranchTarget = dyn_cast<MCConstantExpr>(Op.getExpr());
217 if (BranchTarget && BranchTarget->EvaluateAsAbsolute(Address)) {
219 O.write_hex(Address);
222 // Otherwise, just print the expression.
228 void ARMInstPrinter::printT2LdrLabelOperand(const MCInst *MI, unsigned OpNum,
230 const MCOperand &MO1 = MI->getOperand(OpNum);
233 else if (MO1.isImm())
234 O << "[pc, #" << MO1.getImm() << "]";
236 llvm_unreachable("Unknown LDR label operand?");
239 // so_reg is a 4-operand unit corresponding to register forms of the A5.1
240 // "Addressing Mode 1 - Data-processing operands" forms. This includes:
242 // REG REG 0,SH_OPC - e.g. R5, ROR R3
243 // REG 0 IMM,SH_OPC - e.g. R5, LSL #3
244 void ARMInstPrinter::printSORegRegOperand(const MCInst *MI, unsigned OpNum,
246 const MCOperand &MO1 = MI->getOperand(OpNum);
247 const MCOperand &MO2 = MI->getOperand(OpNum+1);
248 const MCOperand &MO3 = MI->getOperand(OpNum+2);
250 O << getRegisterName(MO1.getReg());
252 // Print the shift opc.
253 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO3.getImm());
254 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
255 if (ShOpc == ARM_AM::rrx)
258 O << ' ' << getRegisterName(MO2.getReg());
259 assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
262 void ARMInstPrinter::printSORegImmOperand(const MCInst *MI, unsigned OpNum,
264 const MCOperand &MO1 = MI->getOperand(OpNum);
265 const MCOperand &MO2 = MI->getOperand(OpNum+1);
267 O << getRegisterName(MO1.getReg());
269 // Print the shift opc.
270 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
271 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
272 if (ShOpc == ARM_AM::rrx)
274 O << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
278 //===--------------------------------------------------------------------===//
279 // Addressing Mode #2
280 //===--------------------------------------------------------------------===//
282 void ARMInstPrinter::printAM2PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
284 const MCOperand &MO1 = MI->getOperand(Op);
285 const MCOperand &MO2 = MI->getOperand(Op+1);
286 const MCOperand &MO3 = MI->getOperand(Op+2);
288 O << "[" << getRegisterName(MO1.getReg());
291 if (ARM_AM::getAM2Offset(MO3.getImm())) // Don't print +0.
293 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
294 << ARM_AM::getAM2Offset(MO3.getImm());
300 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
301 << getRegisterName(MO2.getReg());
303 if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
305 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
310 void ARMInstPrinter::printAM2PostIndexOp(const MCInst *MI, unsigned Op,
312 const MCOperand &MO1 = MI->getOperand(Op);
313 const MCOperand &MO2 = MI->getOperand(Op+1);
314 const MCOperand &MO3 = MI->getOperand(Op+2);
316 O << "[" << getRegisterName(MO1.getReg()) << "], ";
319 unsigned ImmOffs = ARM_AM::getAM2Offset(MO3.getImm());
321 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
326 O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
327 << getRegisterName(MO2.getReg());
329 if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
331 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
335 void ARMInstPrinter::printAddrModeTBB(const MCInst *MI, unsigned Op,
337 const MCOperand &MO1 = MI->getOperand(Op);
338 const MCOperand &MO2 = MI->getOperand(Op+1);
339 O << "[" << getRegisterName(MO1.getReg()) << ", "
340 << getRegisterName(MO2.getReg()) << "]";
343 void ARMInstPrinter::printAddrModeTBH(const MCInst *MI, unsigned Op,
345 const MCOperand &MO1 = MI->getOperand(Op);
346 const MCOperand &MO2 = MI->getOperand(Op+1);
347 O << "[" << getRegisterName(MO1.getReg()) << ", "
348 << getRegisterName(MO2.getReg()) << ", lsl #1]";
351 void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
353 const MCOperand &MO1 = MI->getOperand(Op);
355 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
356 printOperand(MI, Op, O);
360 const MCOperand &MO3 = MI->getOperand(Op+2);
361 unsigned IdxMode = ARM_AM::getAM2IdxMode(MO3.getImm());
363 if (IdxMode == ARMII::IndexModePost) {
364 printAM2PostIndexOp(MI, Op, O);
367 printAM2PreOrOffsetIndexOp(MI, Op, O);
370 void ARMInstPrinter::printAddrMode2OffsetOperand(const MCInst *MI,
373 const MCOperand &MO1 = MI->getOperand(OpNum);
374 const MCOperand &MO2 = MI->getOperand(OpNum+1);
377 unsigned ImmOffs = ARM_AM::getAM2Offset(MO2.getImm());
379 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
384 O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
385 << getRegisterName(MO1.getReg());
387 if (unsigned ShImm = ARM_AM::getAM2Offset(MO2.getImm()))
389 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO2.getImm()))
393 //===--------------------------------------------------------------------===//
394 // Addressing Mode #3
395 //===--------------------------------------------------------------------===//
397 void ARMInstPrinter::printAM3PostIndexOp(const MCInst *MI, unsigned Op,
399 const MCOperand &MO1 = MI->getOperand(Op);
400 const MCOperand &MO2 = MI->getOperand(Op+1);
401 const MCOperand &MO3 = MI->getOperand(Op+2);
403 O << "[" << getRegisterName(MO1.getReg()) << "], ";
406 O << (char)ARM_AM::getAM3Op(MO3.getImm())
407 << getRegisterName(MO2.getReg());
411 unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm());
413 << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
417 void ARMInstPrinter::printAM3PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
419 const MCOperand &MO1 = MI->getOperand(Op);
420 const MCOperand &MO2 = MI->getOperand(Op+1);
421 const MCOperand &MO3 = MI->getOperand(Op+2);
423 O << '[' << getRegisterName(MO1.getReg());
426 O << ", " << getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
427 << getRegisterName(MO2.getReg()) << ']';
431 if (unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm()))
433 << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
438 void ARMInstPrinter::printAddrMode3Operand(const MCInst *MI, unsigned Op,
440 const MCOperand &MO1 = MI->getOperand(Op);
441 if (!MO1.isReg()) { // For label symbolic references.
442 printOperand(MI, Op, O);
446 const MCOperand &MO3 = MI->getOperand(Op+2);
447 unsigned IdxMode = ARM_AM::getAM3IdxMode(MO3.getImm());
449 if (IdxMode == ARMII::IndexModePost) {
450 printAM3PostIndexOp(MI, Op, O);
453 printAM3PreOrOffsetIndexOp(MI, Op, O);
456 void ARMInstPrinter::printAddrMode3OffsetOperand(const MCInst *MI,
459 const MCOperand &MO1 = MI->getOperand(OpNum);
460 const MCOperand &MO2 = MI->getOperand(OpNum+1);
463 O << getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm()))
464 << getRegisterName(MO1.getReg());
468 unsigned ImmOffs = ARM_AM::getAM3Offset(MO2.getImm());
470 << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO2.getImm()))
474 void ARMInstPrinter::printPostIdxImm8Operand(const MCInst *MI,
477 const MCOperand &MO = MI->getOperand(OpNum);
478 unsigned Imm = MO.getImm();
479 O << '#' << ((Imm & 256) ? "" : "-") << (Imm & 0xff);
482 void ARMInstPrinter::printPostIdxRegOperand(const MCInst *MI, unsigned OpNum,
484 const MCOperand &MO1 = MI->getOperand(OpNum);
485 const MCOperand &MO2 = MI->getOperand(OpNum+1);
487 O << (MO2.getImm() ? "" : "-") << getRegisterName(MO1.getReg());
490 void ARMInstPrinter::printPostIdxImm8s4Operand(const MCInst *MI,
493 const MCOperand &MO = MI->getOperand(OpNum);
494 unsigned Imm = MO.getImm();
495 O << '#' << ((Imm & 256) ? "" : "-") << ((Imm & 0xff) << 2);
499 void ARMInstPrinter::printLdStmModeOperand(const MCInst *MI, unsigned OpNum,
501 ARM_AM::AMSubMode Mode = ARM_AM::getAM4SubMode(MI->getOperand(OpNum)
503 O << ARM_AM::getAMSubModeStr(Mode);
506 void ARMInstPrinter::printAddrMode5Operand(const MCInst *MI, unsigned OpNum,
508 const MCOperand &MO1 = MI->getOperand(OpNum);
509 const MCOperand &MO2 = MI->getOperand(OpNum+1);
511 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
512 printOperand(MI, OpNum, O);
516 O << "[" << getRegisterName(MO1.getReg());
518 unsigned ImmOffs = ARM_AM::getAM5Offset(MO2.getImm());
519 unsigned Op = ARM_AM::getAM5Op(MO2.getImm());
520 if (ImmOffs || Op == ARM_AM::sub) {
522 << ARM_AM::getAddrOpcStr(ARM_AM::getAM5Op(MO2.getImm()))
528 void ARMInstPrinter::printAddrMode6Operand(const MCInst *MI, unsigned OpNum,
530 const MCOperand &MO1 = MI->getOperand(OpNum);
531 const MCOperand &MO2 = MI->getOperand(OpNum+1);
533 O << "[" << getRegisterName(MO1.getReg());
535 // FIXME: Both darwin as and GNU as violate ARM docs here.
536 O << ", :" << (MO2.getImm() << 3);
541 void ARMInstPrinter::printAddrMode7Operand(const MCInst *MI, unsigned OpNum,
543 const MCOperand &MO1 = MI->getOperand(OpNum);
544 O << "[" << getRegisterName(MO1.getReg()) << "]";
547 void ARMInstPrinter::printAddrMode6OffsetOperand(const MCInst *MI,
550 const MCOperand &MO = MI->getOperand(OpNum);
551 if (MO.getReg() == 0)
554 O << ", " << getRegisterName(MO.getReg());
557 void ARMInstPrinter::printBitfieldInvMaskImmOperand(const MCInst *MI,
560 const MCOperand &MO = MI->getOperand(OpNum);
561 uint32_t v = ~MO.getImm();
562 int32_t lsb = CountTrailingZeros_32(v);
563 int32_t width = (32 - CountLeadingZeros_32 (v)) - lsb;
564 assert(MO.isImm() && "Not a valid bf_inv_mask_imm value!");
565 O << '#' << lsb << ", #" << width;
568 void ARMInstPrinter::printMemBOption(const MCInst *MI, unsigned OpNum,
570 unsigned val = MI->getOperand(OpNum).getImm();
571 O << ARM_MB::MemBOptToString(val);
574 void ARMInstPrinter::printShiftImmOperand(const MCInst *MI, unsigned OpNum,
576 unsigned ShiftOp = MI->getOperand(OpNum).getImm();
577 bool isASR = (ShiftOp & (1 << 5)) != 0;
578 unsigned Amt = ShiftOp & 0x1f;
580 O << ", asr #" << (Amt == 0 ? 32 : Amt);
582 O << ", lsl #" << Amt;
585 void ARMInstPrinter::printPKHLSLShiftImm(const MCInst *MI, unsigned OpNum,
587 unsigned Imm = MI->getOperand(OpNum).getImm();
590 assert(Imm > 0 && Imm < 32 && "Invalid PKH shift immediate value!");
591 O << ", lsl #" << Imm;
594 void ARMInstPrinter::printPKHASRShiftImm(const MCInst *MI, unsigned OpNum,
596 unsigned Imm = MI->getOperand(OpNum).getImm();
597 // A shift amount of 32 is encoded as 0.
600 assert(Imm > 0 && Imm <= 32 && "Invalid PKH shift immediate value!");
601 O << ", asr #" << Imm;
604 void ARMInstPrinter::printRegisterList(const MCInst *MI, unsigned OpNum,
607 for (unsigned i = OpNum, e = MI->getNumOperands(); i != e; ++i) {
608 if (i != OpNum) O << ", ";
609 O << getRegisterName(MI->getOperand(i).getReg());
614 void ARMInstPrinter::printSetendOperand(const MCInst *MI, unsigned OpNum,
616 const MCOperand &Op = MI->getOperand(OpNum);
623 void ARMInstPrinter::printCPSIMod(const MCInst *MI, unsigned OpNum,
625 const MCOperand &Op = MI->getOperand(OpNum);
626 O << ARM_PROC::IModToString(Op.getImm());
629 void ARMInstPrinter::printCPSIFlag(const MCInst *MI, unsigned OpNum,
631 const MCOperand &Op = MI->getOperand(OpNum);
632 unsigned IFlags = Op.getImm();
633 for (int i=2; i >= 0; --i)
634 if (IFlags & (1 << i))
635 O << ARM_PROC::IFlagsToString(1 << i);
641 void ARMInstPrinter::printMSRMaskOperand(const MCInst *MI, unsigned OpNum,
643 const MCOperand &Op = MI->getOperand(OpNum);
644 unsigned SpecRegRBit = Op.getImm() >> 4;
645 unsigned Mask = Op.getImm() & 0xf;
647 if (getAvailableFeatures() & ARM::FeatureMClass) {
648 switch (Op.getImm()) {
649 default: llvm_unreachable("Unexpected mask value!");
650 case 0: O << "apsr"; return;
651 case 1: O << "iapsr"; return;
652 case 2: O << "eapsr"; return;
653 case 3: O << "xpsr"; return;
654 case 5: O << "ipsr"; return;
655 case 6: O << "epsr"; return;
656 case 7: O << "iepsr"; return;
657 case 8: O << "msp"; return;
658 case 9: O << "psp"; return;
659 case 16: O << "primask"; return;
660 case 17: O << "basepri"; return;
661 case 18: O << "basepri_max"; return;
662 case 19: O << "faultmask"; return;
663 case 20: O << "control"; return;
667 // As special cases, CPSR_f, CPSR_s and CPSR_fs prefer printing as
668 // APSR_nzcvq, APSR_g and APSRnzcvqg, respectively.
669 if (!SpecRegRBit && (Mask == 8 || Mask == 4 || Mask == 12)) {
672 default: llvm_unreachable("Unexpected mask value!");
673 case 4: O << "g"; return;
674 case 8: O << "nzcvq"; return;
675 case 12: O << "nzcvqg"; return;
686 if (Mask & 8) O << 'f';
687 if (Mask & 4) O << 's';
688 if (Mask & 2) O << 'x';
689 if (Mask & 1) O << 'c';
693 void ARMInstPrinter::printPredicateOperand(const MCInst *MI, unsigned OpNum,
695 ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
696 // Handle the undefined 15 CC value here for printing so we don't abort().
697 if ((unsigned)CC == 15)
699 else if (CC != ARMCC::AL)
700 O << ARMCondCodeToString(CC);
703 void ARMInstPrinter::printMandatoryPredicateOperand(const MCInst *MI,
706 ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
707 O << ARMCondCodeToString(CC);
710 void ARMInstPrinter::printSBitModifierOperand(const MCInst *MI, unsigned OpNum,
712 if (MI->getOperand(OpNum).getReg()) {
713 assert(MI->getOperand(OpNum).getReg() == ARM::CPSR &&
714 "Expect ARM CPSR register!");
719 void ARMInstPrinter::printNoHashImmediate(const MCInst *MI, unsigned OpNum,
721 O << MI->getOperand(OpNum).getImm();
724 void ARMInstPrinter::printPImmediate(const MCInst *MI, unsigned OpNum,
726 O << "p" << MI->getOperand(OpNum).getImm();
729 void ARMInstPrinter::printCImmediate(const MCInst *MI, unsigned OpNum,
731 O << "c" << MI->getOperand(OpNum).getImm();
734 void ARMInstPrinter::printCoprocOptionImm(const MCInst *MI, unsigned OpNum,
736 O << "{" << MI->getOperand(OpNum).getImm() << "}";
739 void ARMInstPrinter::printPCLabel(const MCInst *MI, unsigned OpNum,
741 llvm_unreachable("Unhandled PC-relative pseudo-instruction!");
744 void ARMInstPrinter::printThumbS4ImmOperand(const MCInst *MI, unsigned OpNum,
746 O << "#" << MI->getOperand(OpNum).getImm() * 4;
749 void ARMInstPrinter::printThumbSRImm(const MCInst *MI, unsigned OpNum,
751 unsigned Imm = MI->getOperand(OpNum).getImm();
752 O << "#" << (Imm == 0 ? 32 : Imm);
755 void ARMInstPrinter::printThumbITMask(const MCInst *MI, unsigned OpNum,
757 // (3 - the number of trailing zeros) is the number of then / else.
758 unsigned Mask = MI->getOperand(OpNum).getImm();
759 unsigned CondBit0 = Mask >> 4 & 1;
760 unsigned NumTZ = CountTrailingZeros_32(Mask);
761 assert(NumTZ <= 3 && "Invalid IT mask!");
762 for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
763 bool T = ((Mask >> Pos) & 1) == CondBit0;
771 void ARMInstPrinter::printThumbAddrModeRROperand(const MCInst *MI, unsigned Op,
773 const MCOperand &MO1 = MI->getOperand(Op);
774 const MCOperand &MO2 = MI->getOperand(Op + 1);
776 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
777 printOperand(MI, Op, O);
781 O << "[" << getRegisterName(MO1.getReg());
782 if (unsigned RegNum = MO2.getReg())
783 O << ", " << getRegisterName(RegNum);
787 void ARMInstPrinter::printThumbAddrModeImm5SOperand(const MCInst *MI,
791 const MCOperand &MO1 = MI->getOperand(Op);
792 const MCOperand &MO2 = MI->getOperand(Op + 1);
794 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
795 printOperand(MI, Op, O);
799 O << "[" << getRegisterName(MO1.getReg());
800 if (unsigned ImmOffs = MO2.getImm())
801 O << ", #" << ImmOffs * Scale;
805 void ARMInstPrinter::printThumbAddrModeImm5S1Operand(const MCInst *MI,
808 printThumbAddrModeImm5SOperand(MI, Op, O, 1);
811 void ARMInstPrinter::printThumbAddrModeImm5S2Operand(const MCInst *MI,
814 printThumbAddrModeImm5SOperand(MI, Op, O, 2);
817 void ARMInstPrinter::printThumbAddrModeImm5S4Operand(const MCInst *MI,
820 printThumbAddrModeImm5SOperand(MI, Op, O, 4);
823 void ARMInstPrinter::printThumbAddrModeSPOperand(const MCInst *MI, unsigned Op,
825 printThumbAddrModeImm5SOperand(MI, Op, O, 4);
828 // Constant shifts t2_so_reg is a 2-operand unit corresponding to the Thumb2
829 // register with shift forms.
831 // REG IMM, SH_OPC - e.g. R5, LSL #3
832 void ARMInstPrinter::printT2SOOperand(const MCInst *MI, unsigned OpNum,
834 const MCOperand &MO1 = MI->getOperand(OpNum);
835 const MCOperand &MO2 = MI->getOperand(OpNum+1);
837 unsigned Reg = MO1.getReg();
838 O << getRegisterName(Reg);
840 // Print the shift opc.
841 assert(MO2.isImm() && "Not a valid t2_so_reg value!");
842 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
843 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
844 if (ShOpc != ARM_AM::rrx)
845 O << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
848 void ARMInstPrinter::printAddrModeImm12Operand(const MCInst *MI, unsigned OpNum,
850 const MCOperand &MO1 = MI->getOperand(OpNum);
851 const MCOperand &MO2 = MI->getOperand(OpNum+1);
853 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
854 printOperand(MI, OpNum, O);
858 O << "[" << getRegisterName(MO1.getReg());
860 int32_t OffImm = (int32_t)MO2.getImm();
861 bool isSub = OffImm < 0;
862 // Special value for #-0. All others are normal.
863 if (OffImm == INT32_MIN)
866 O << ", #-" << -OffImm;
868 O << ", #" << OffImm;
872 void ARMInstPrinter::printT2AddrModeImm8Operand(const MCInst *MI,
875 const MCOperand &MO1 = MI->getOperand(OpNum);
876 const MCOperand &MO2 = MI->getOperand(OpNum+1);
878 O << "[" << getRegisterName(MO1.getReg());
880 int32_t OffImm = (int32_t)MO2.getImm();
882 if (OffImm == INT32_MIN)
885 O << ", #-" << -OffImm;
887 O << ", #" << OffImm;
891 void ARMInstPrinter::printT2AddrModeImm8s4Operand(const MCInst *MI,
894 const MCOperand &MO1 = MI->getOperand(OpNum);
895 const MCOperand &MO2 = MI->getOperand(OpNum+1);
897 if (!MO1.isReg()) { // For label symbolic references.
898 printOperand(MI, OpNum, O);
902 O << "[" << getRegisterName(MO1.getReg());
904 int32_t OffImm = (int32_t)MO2.getImm() / 4;
907 O << ", #-" << -OffImm * 4;
909 O << ", #" << OffImm * 4;
913 void ARMInstPrinter::printT2AddrModeImm0_1020s4Operand(const MCInst *MI,
916 const MCOperand &MO1 = MI->getOperand(OpNum);
917 const MCOperand &MO2 = MI->getOperand(OpNum+1);
919 O << "[" << getRegisterName(MO1.getReg());
921 O << ", #" << MO2.getImm() * 4;
925 void ARMInstPrinter::printT2AddrModeImm8OffsetOperand(const MCInst *MI,
928 const MCOperand &MO1 = MI->getOperand(OpNum);
929 int32_t OffImm = (int32_t)MO1.getImm();
932 O << ", #-" << -OffImm;
934 O << ", #" << OffImm;
937 void ARMInstPrinter::printT2AddrModeImm8s4OffsetOperand(const MCInst *MI,
940 const MCOperand &MO1 = MI->getOperand(OpNum);
941 int32_t OffImm = (int32_t)MO1.getImm() / 4;
946 O << "#-" << -OffImm * 4;
948 O << "#" << OffImm * 4;
952 void ARMInstPrinter::printT2AddrModeSoRegOperand(const MCInst *MI,
955 const MCOperand &MO1 = MI->getOperand(OpNum);
956 const MCOperand &MO2 = MI->getOperand(OpNum+1);
957 const MCOperand &MO3 = MI->getOperand(OpNum+2);
959 O << "[" << getRegisterName(MO1.getReg());
961 assert(MO2.getReg() && "Invalid so_reg load / store address!");
962 O << ", " << getRegisterName(MO2.getReg());
964 unsigned ShAmt = MO3.getImm();
966 assert(ShAmt <= 3 && "Not a valid Thumb2 addressing mode!");
967 O << ", lsl #" << ShAmt;
972 void ARMInstPrinter::printFPImmOperand(const MCInst *MI, unsigned OpNum,
974 const MCOperand &MO = MI->getOperand(OpNum);
975 O << '#' << ARM_AM::getFPImmFloat(MO.getImm());
978 void ARMInstPrinter::printNEONModImmOperand(const MCInst *MI, unsigned OpNum,
980 unsigned EncodedImm = MI->getOperand(OpNum).getImm();
982 uint64_t Val = ARM_AM::decodeNEONModImm(EncodedImm, EltBits);
987 void ARMInstPrinter::printImmPlusOneOperand(const MCInst *MI, unsigned OpNum,
989 unsigned Imm = MI->getOperand(OpNum).getImm();
993 void ARMInstPrinter::printRotImmOperand(const MCInst *MI, unsigned OpNum,
995 unsigned Imm = MI->getOperand(OpNum).getImm();
1000 default: assert (0 && "illegal ror immediate!");
1001 case 1: O << "8"; break;
1002 case 2: O << "16"; break;
1003 case 3: O << "24"; break;
1007 void ARMInstPrinter::printFBits16(const MCInst *MI, unsigned OpNum,
1009 O << "#" << 16 - MI->getOperand(OpNum).getImm();
1012 void ARMInstPrinter::printFBits32(const MCInst *MI, unsigned OpNum,
1014 O << "#" << 32 - MI->getOperand(OpNum).getImm();
1017 void ARMInstPrinter::printVectorIndex(const MCInst *MI, unsigned OpNum,
1019 O << "[" << MI->getOperand(OpNum).getImm() << "]";
1022 void ARMInstPrinter::printVectorListOne(const MCInst *MI, unsigned OpNum,
1024 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "}";
1027 void ARMInstPrinter::printVectorListTwo(const MCInst *MI, unsigned OpNum,
1029 // Normally, it's not safe to use register enum values directly with
1030 // addition to get the next register, but for VFP registers, the
1031 // sort order is guaranteed because they're all of the form D<n>.
1032 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1033 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "}";
1036 void ARMInstPrinter::printVectorListThree(const MCInst *MI, unsigned OpNum,
1038 // Normally, it's not safe to use register enum values directly with
1039 // addition to get the next register, but for VFP registers, the
1040 // sort order is guaranteed because they're all of the form D<n>.
1041 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1042 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << ", "
1043 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "}";
1046 void ARMInstPrinter::printVectorListFour(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) << ", "
1054 << getRegisterName(MI->getOperand(OpNum).getReg() + 3) << "}";
1057 void ARMInstPrinter::printVectorListOneAllLanes(const MCInst *MI,
1060 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[]}";
1063 void ARMInstPrinter::printVectorListTwoAllLanes(const MCInst *MI,
1066 // Normally, it's not safe to use register enum values directly with
1067 // addition to get the next register, but for VFP registers, the
1068 // sort order is guaranteed because they're all of the form D<n>.
1069 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1070 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "[]}";
1073 void ARMInstPrinter::printVectorListThreeAllLanes(const MCInst *MI,
1076 // Normally, it's not safe to use register enum values directly with
1077 // addition to get the next register, but for VFP registers, the
1078 // sort order is guaranteed because they're all of the form D<n>.
1079 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1080 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "[], "
1081 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[]}";
1084 void ARMInstPrinter::printVectorListFourAllLanes(const MCInst *MI,
1087 // Normally, it's not safe to use register enum values directly with
1088 // addition to get the next register, but for VFP registers, the
1089 // sort order is guaranteed because they're all of the form D<n>.
1090 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1091 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "[], "
1092 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1093 << getRegisterName(MI->getOperand(OpNum).getReg() + 3) << "[]}";
1096 void ARMInstPrinter::printVectorListTwoSpaced(const MCInst *MI, unsigned OpNum,
1098 // Normally, it's not safe to use register enum values directly with
1099 // addition to get the next register, but for VFP registers, the
1100 // sort order is guaranteed because they're all of the form D<n>.
1101 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1102 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "}";
1105 void ARMInstPrinter::printVectorListTwoSpacedAllLanes(const MCInst *MI,
1108 // Normally, it's not safe to use register enum values directly with
1109 // addition to get the next register, but for VFP registers, the
1110 // sort order is guaranteed because they're all of the form D<n>.
1111 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1112 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[]}";
1115 void ARMInstPrinter::printVectorListThreeSpacedAllLanes(const MCInst *MI,
1118 // Normally, it's not safe to use register enum values directly with
1119 // addition to get the next register, but for VFP registers, the
1120 // sort order is guaranteed because they're all of the form D<n>.
1121 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1122 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1123 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "[]}";
1126 void ARMInstPrinter::printVectorListFourSpacedAllLanes(const MCInst *MI,
1129 // Normally, it's not safe to use register enum values directly with
1130 // addition to get the next register, but for VFP registers, the
1131 // sort order is guaranteed because they're all of the form D<n>.
1132 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1133 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1134 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "[], "
1135 << getRegisterName(MI->getOperand(OpNum).getReg() + 6) << "[]}";
1138 void ARMInstPrinter::printVectorListThreeSpaced(const MCInst *MI,
1141 // Normally, it's not safe to use register enum values directly with
1142 // addition to get the next register, but for VFP registers, the
1143 // sort order is guaranteed because they're all of the form D<n>.
1144 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1145 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1146 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "}";
1149 void ARMInstPrinter::printVectorListFourSpaced(const MCInst *MI,
1152 // Normally, it's not safe to use register enum values directly with
1153 // addition to get the next register, but for VFP registers, the
1154 // sort order is guaranteed because they're all of the form D<n>.
1155 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1156 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1157 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << ", "
1158 << getRegisterName(MI->getOperand(OpNum).getReg() + 6) << "}";