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 void ARMInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
48 OS << getRegisterName(RegNo);
51 void ARMInstPrinter::printInst(const MCInst *MI, raw_ostream &O,
53 unsigned Opcode = MI->getOpcode();
55 // Check for MOVs and print canonical forms, instead.
56 if (Opcode == ARM::MOVsr) {
57 // FIXME: Thumb variants?
58 const MCOperand &Dst = MI->getOperand(0);
59 const MCOperand &MO1 = MI->getOperand(1);
60 const MCOperand &MO2 = MI->getOperand(2);
61 const MCOperand &MO3 = MI->getOperand(3);
63 O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO3.getImm()));
64 printSBitModifierOperand(MI, 6, O);
65 printPredicateOperand(MI, 4, O);
67 O << '\t' << getRegisterName(Dst.getReg())
68 << ", " << getRegisterName(MO1.getReg());
70 O << ", " << getRegisterName(MO2.getReg());
71 assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
72 printAnnotation(O, Annot);
76 if (Opcode == ARM::MOVsi) {
77 // FIXME: Thumb variants?
78 const MCOperand &Dst = MI->getOperand(0);
79 const MCOperand &MO1 = MI->getOperand(1);
80 const MCOperand &MO2 = MI->getOperand(2);
82 O << '\t' << ARM_AM::getShiftOpcStr(ARM_AM::getSORegShOp(MO2.getImm()));
83 printSBitModifierOperand(MI, 5, O);
84 printPredicateOperand(MI, 3, O);
86 O << '\t' << getRegisterName(Dst.getReg())
87 << ", " << getRegisterName(MO1.getReg());
89 if (ARM_AM::getSORegShOp(MO2.getImm()) == ARM_AM::rrx) {
90 printAnnotation(O, Annot);
94 O << ", #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
95 printAnnotation(O, Annot);
101 if ((Opcode == ARM::STMDB_UPD || Opcode == ARM::t2STMDB_UPD) &&
102 MI->getOperand(0).getReg() == ARM::SP &&
103 MI->getNumOperands() > 5) {
104 // Should only print PUSH if there are at least two registers in the list.
106 printPredicateOperand(MI, 2, O);
107 if (Opcode == ARM::t2STMDB_UPD)
110 printRegisterList(MI, 4, O);
111 printAnnotation(O, Annot);
114 if (Opcode == ARM::STR_PRE_IMM && MI->getOperand(2).getReg() == ARM::SP &&
115 MI->getOperand(3).getImm() == -4) {
117 printPredicateOperand(MI, 4, O);
118 O << "\t{" << getRegisterName(MI->getOperand(1).getReg()) << "}";
119 printAnnotation(O, Annot);
124 if ((Opcode == ARM::LDMIA_UPD || Opcode == ARM::t2LDMIA_UPD) &&
125 MI->getOperand(0).getReg() == ARM::SP &&
126 MI->getNumOperands() > 5) {
127 // Should only print POP if there are at least two registers in the list.
129 printPredicateOperand(MI, 2, O);
130 if (Opcode == ARM::t2LDMIA_UPD)
133 printRegisterList(MI, 4, O);
134 printAnnotation(O, Annot);
137 if (Opcode == ARM::LDR_POST_IMM && MI->getOperand(2).getReg() == ARM::SP &&
138 MI->getOperand(4).getImm() == 4) {
140 printPredicateOperand(MI, 5, O);
141 O << "\t{" << getRegisterName(MI->getOperand(0).getReg()) << "}";
142 printAnnotation(O, Annot);
148 if ((Opcode == ARM::VSTMSDB_UPD || Opcode == ARM::VSTMDDB_UPD) &&
149 MI->getOperand(0).getReg() == ARM::SP) {
150 O << '\t' << "vpush";
151 printPredicateOperand(MI, 2, O);
153 printRegisterList(MI, 4, O);
154 printAnnotation(O, Annot);
159 if ((Opcode == ARM::VLDMSIA_UPD || Opcode == ARM::VLDMDIA_UPD) &&
160 MI->getOperand(0).getReg() == ARM::SP) {
162 printPredicateOperand(MI, 2, O);
164 printRegisterList(MI, 4, O);
165 printAnnotation(O, Annot);
169 if (Opcode == ARM::tLDMIA) {
170 bool Writeback = true;
171 unsigned BaseReg = MI->getOperand(0).getReg();
172 for (unsigned i = 3; i < MI->getNumOperands(); ++i) {
173 if (MI->getOperand(i).getReg() == BaseReg)
179 printPredicateOperand(MI, 1, O);
180 O << '\t' << getRegisterName(BaseReg);
181 if (Writeback) O << "!";
183 printRegisterList(MI, 3, O);
184 printAnnotation(O, Annot);
189 if (Opcode == ARM::tMOVr && MI->getOperand(0).getReg() == ARM::R8 &&
190 MI->getOperand(1).getReg() == ARM::R8) {
192 printPredicateOperand(MI, 2, O);
193 printAnnotation(O, Annot);
197 printInstruction(MI, O);
198 printAnnotation(O, Annot);
201 void ARMInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
203 const MCOperand &Op = MI->getOperand(OpNo);
205 unsigned Reg = Op.getReg();
206 O << getRegisterName(Reg);
207 } else if (Op.isImm()) {
208 O << '#' << Op.getImm();
210 assert(Op.isExpr() && "unknown operand kind in printOperand");
211 // If a symbolic branch target was added as a constant expression then print
212 // that address in hex. And only print 32 unsigned bits for the address.
213 const MCConstantExpr *BranchTarget = dyn_cast<MCConstantExpr>(Op.getExpr());
215 if (BranchTarget && BranchTarget->EvaluateAsAbsolute(Address)) {
217 O.write_hex((uint32_t)Address);
220 // Otherwise, just print the expression.
226 void ARMInstPrinter::printT2LdrLabelOperand(const MCInst *MI, unsigned OpNum,
228 const MCOperand &MO1 = MI->getOperand(OpNum);
231 else if (MO1.isImm())
232 O << "[pc, #" << MO1.getImm() << "]";
234 llvm_unreachable("Unknown LDR label operand?");
237 // so_reg is a 4-operand unit corresponding to register forms of the A5.1
238 // "Addressing Mode 1 - Data-processing operands" forms. This includes:
240 // REG REG 0,SH_OPC - e.g. R5, ROR R3
241 // REG 0 IMM,SH_OPC - e.g. R5, LSL #3
242 void ARMInstPrinter::printSORegRegOperand(const MCInst *MI, unsigned OpNum,
244 const MCOperand &MO1 = MI->getOperand(OpNum);
245 const MCOperand &MO2 = MI->getOperand(OpNum+1);
246 const MCOperand &MO3 = MI->getOperand(OpNum+2);
248 O << getRegisterName(MO1.getReg());
250 // Print the shift opc.
251 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO3.getImm());
252 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
253 if (ShOpc == ARM_AM::rrx)
256 O << ' ' << getRegisterName(MO2.getReg());
257 assert(ARM_AM::getSORegOffset(MO3.getImm()) == 0);
260 void ARMInstPrinter::printSORegImmOperand(const MCInst *MI, unsigned OpNum,
262 const MCOperand &MO1 = MI->getOperand(OpNum);
263 const MCOperand &MO2 = MI->getOperand(OpNum+1);
265 O << getRegisterName(MO1.getReg());
267 // Print the shift opc.
268 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
269 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
270 if (ShOpc == ARM_AM::rrx)
272 O << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
276 //===--------------------------------------------------------------------===//
277 // Addressing Mode #2
278 //===--------------------------------------------------------------------===//
280 void ARMInstPrinter::printAM2PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
282 const MCOperand &MO1 = MI->getOperand(Op);
283 const MCOperand &MO2 = MI->getOperand(Op+1);
284 const MCOperand &MO3 = MI->getOperand(Op+2);
286 O << "[" << getRegisterName(MO1.getReg());
289 if (ARM_AM::getAM2Offset(MO3.getImm())) // Don't print +0.
291 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
292 << ARM_AM::getAM2Offset(MO3.getImm());
298 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
299 << getRegisterName(MO2.getReg());
301 if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
303 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
308 void ARMInstPrinter::printAM2PostIndexOp(const MCInst *MI, unsigned Op,
310 const MCOperand &MO1 = MI->getOperand(Op);
311 const MCOperand &MO2 = MI->getOperand(Op+1);
312 const MCOperand &MO3 = MI->getOperand(Op+2);
314 O << "[" << getRegisterName(MO1.getReg()) << "], ";
317 unsigned ImmOffs = ARM_AM::getAM2Offset(MO3.getImm());
319 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
324 O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO3.getImm()))
325 << getRegisterName(MO2.getReg());
327 if (unsigned ShImm = ARM_AM::getAM2Offset(MO3.getImm()))
329 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO3.getImm()))
333 void ARMInstPrinter::printAddrModeTBB(const MCInst *MI, unsigned Op,
335 const MCOperand &MO1 = MI->getOperand(Op);
336 const MCOperand &MO2 = MI->getOperand(Op+1);
337 O << "[" << getRegisterName(MO1.getReg()) << ", "
338 << getRegisterName(MO2.getReg()) << "]";
341 void ARMInstPrinter::printAddrModeTBH(const MCInst *MI, unsigned Op,
343 const MCOperand &MO1 = MI->getOperand(Op);
344 const MCOperand &MO2 = MI->getOperand(Op+1);
345 O << "[" << getRegisterName(MO1.getReg()) << ", "
346 << getRegisterName(MO2.getReg()) << ", lsl #1]";
349 void ARMInstPrinter::printAddrMode2Operand(const MCInst *MI, unsigned Op,
351 const MCOperand &MO1 = MI->getOperand(Op);
353 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
354 printOperand(MI, Op, O);
358 const MCOperand &MO3 = MI->getOperand(Op+2);
359 unsigned IdxMode = ARM_AM::getAM2IdxMode(MO3.getImm());
361 if (IdxMode == ARMII::IndexModePost) {
362 printAM2PostIndexOp(MI, Op, O);
365 printAM2PreOrOffsetIndexOp(MI, Op, O);
368 void ARMInstPrinter::printAddrMode2OffsetOperand(const MCInst *MI,
371 const MCOperand &MO1 = MI->getOperand(OpNum);
372 const MCOperand &MO2 = MI->getOperand(OpNum+1);
375 unsigned ImmOffs = ARM_AM::getAM2Offset(MO2.getImm());
377 << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
382 O << ARM_AM::getAddrOpcStr(ARM_AM::getAM2Op(MO2.getImm()))
383 << getRegisterName(MO1.getReg());
385 if (unsigned ShImm = ARM_AM::getAM2Offset(MO2.getImm()))
387 << ARM_AM::getShiftOpcStr(ARM_AM::getAM2ShiftOpc(MO2.getImm()))
391 //===--------------------------------------------------------------------===//
392 // Addressing Mode #3
393 //===--------------------------------------------------------------------===//
395 void ARMInstPrinter::printAM3PostIndexOp(const MCInst *MI, unsigned Op,
397 const MCOperand &MO1 = MI->getOperand(Op);
398 const MCOperand &MO2 = MI->getOperand(Op+1);
399 const MCOperand &MO3 = MI->getOperand(Op+2);
401 O << "[" << getRegisterName(MO1.getReg()) << "], ";
404 O << (char)ARM_AM::getAM3Op(MO3.getImm())
405 << getRegisterName(MO2.getReg());
409 unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm());
411 << ARM_AM::getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
415 void ARMInstPrinter::printAM3PreOrOffsetIndexOp(const MCInst *MI, unsigned Op,
417 const MCOperand &MO1 = MI->getOperand(Op);
418 const MCOperand &MO2 = MI->getOperand(Op+1);
419 const MCOperand &MO3 = MI->getOperand(Op+2);
421 O << '[' << getRegisterName(MO1.getReg());
424 O << ", " << getAddrOpcStr(ARM_AM::getAM3Op(MO3.getImm()))
425 << getRegisterName(MO2.getReg()) << ']';
429 //If the op is sub we have to print the immediate even if it is 0
430 unsigned ImmOffs = ARM_AM::getAM3Offset(MO3.getImm());
431 ARM_AM::AddrOpc op = ARM_AM::getAM3Op(MO3.getImm());
433 if (ImmOffs || (op == ARM_AM::sub))
435 << ARM_AM::getAddrOpcStr(op)
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 unsigned SYSm = Op.getImm();
651 unsigned Opcode = MI->getOpcode();
652 // For reads of the special registers ignore the "mask encoding" bits
653 // which are only for writes.
654 if (Opcode == ARM::t2MRS_M)
657 default: llvm_unreachable("Unexpected mask value!");
659 case 0x800: O << "apsr"; return; // with _nzcvq bits is an alias for aspr
660 case 0x400: O << "apsr_g"; return;
661 case 0xc00: O << "apsr_nzcvqg"; return;
663 case 0x801: O << "iapsr"; return; // with _nzcvq bits is an alias for iapsr
664 case 0x401: O << "iapsr_g"; return;
665 case 0xc01: O << "iapsr_nzcvqg"; return;
667 case 0x802: O << "eapsr"; return; // with _nzcvq bits is an alias for eapsr
668 case 0x402: O << "eapsr_g"; return;
669 case 0xc02: O << "eapsr_nzcvqg"; return;
671 case 0x803: O << "xpsr"; return; // with _nzcvq bits is an alias for xpsr
672 case 0x403: O << "xpsr_g"; return;
673 case 0xc03: O << "xpsr_nzcvqg"; return;
674 case 5: O << "ipsr"; return;
675 case 6: O << "epsr"; return;
676 case 7: O << "iepsr"; return;
677 case 8: O << "msp"; return;
678 case 9: O << "psp"; return;
679 case 16: O << "primask"; return;
680 case 17: O << "basepri"; return;
681 case 18: O << "basepri_max"; return;
682 case 19: O << "faultmask"; return;
683 case 20: O << "control"; return;
687 // As special cases, CPSR_f, CPSR_s and CPSR_fs prefer printing as
688 // APSR_nzcvq, APSR_g and APSRnzcvqg, respectively.
689 if (!SpecRegRBit && (Mask == 8 || Mask == 4 || Mask == 12)) {
692 default: llvm_unreachable("Unexpected mask value!");
693 case 4: O << "g"; return;
694 case 8: O << "nzcvq"; return;
695 case 12: O << "nzcvqg"; return;
706 if (Mask & 8) O << 'f';
707 if (Mask & 4) O << 's';
708 if (Mask & 2) O << 'x';
709 if (Mask & 1) O << 'c';
713 void ARMInstPrinter::printPredicateOperand(const MCInst *MI, unsigned OpNum,
715 ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
716 // Handle the undefined 15 CC value here for printing so we don't abort().
717 if ((unsigned)CC == 15)
719 else if (CC != ARMCC::AL)
720 O << ARMCondCodeToString(CC);
723 void ARMInstPrinter::printMandatoryPredicateOperand(const MCInst *MI,
726 ARMCC::CondCodes CC = (ARMCC::CondCodes)MI->getOperand(OpNum).getImm();
727 O << ARMCondCodeToString(CC);
730 void ARMInstPrinter::printSBitModifierOperand(const MCInst *MI, unsigned OpNum,
732 if (MI->getOperand(OpNum).getReg()) {
733 assert(MI->getOperand(OpNum).getReg() == ARM::CPSR &&
734 "Expect ARM CPSR register!");
739 void ARMInstPrinter::printNoHashImmediate(const MCInst *MI, unsigned OpNum,
741 O << MI->getOperand(OpNum).getImm();
744 void ARMInstPrinter::printPImmediate(const MCInst *MI, unsigned OpNum,
746 O << "p" << MI->getOperand(OpNum).getImm();
749 void ARMInstPrinter::printCImmediate(const MCInst *MI, unsigned OpNum,
751 O << "c" << MI->getOperand(OpNum).getImm();
754 void ARMInstPrinter::printCoprocOptionImm(const MCInst *MI, unsigned OpNum,
756 O << "{" << MI->getOperand(OpNum).getImm() << "}";
759 void ARMInstPrinter::printPCLabel(const MCInst *MI, unsigned OpNum,
761 llvm_unreachable("Unhandled PC-relative pseudo-instruction!");
764 void ARMInstPrinter::printThumbS4ImmOperand(const MCInst *MI, unsigned OpNum,
766 O << "#" << MI->getOperand(OpNum).getImm() * 4;
769 void ARMInstPrinter::printThumbSRImm(const MCInst *MI, unsigned OpNum,
771 unsigned Imm = MI->getOperand(OpNum).getImm();
772 O << "#" << (Imm == 0 ? 32 : Imm);
775 void ARMInstPrinter::printThumbITMask(const MCInst *MI, unsigned OpNum,
777 // (3 - the number of trailing zeros) is the number of then / else.
778 unsigned Mask = MI->getOperand(OpNum).getImm();
779 unsigned Firstcond = MI->getOperand(OpNum-1).getImm();
780 unsigned CondBit0 = Firstcond & 1;
781 unsigned NumTZ = CountTrailingZeros_32(Mask);
782 assert(NumTZ <= 3 && "Invalid IT mask!");
783 for (unsigned Pos = 3, e = NumTZ; Pos > e; --Pos) {
784 bool T = ((Mask >> Pos) & 1) == CondBit0;
792 void ARMInstPrinter::printThumbAddrModeRROperand(const MCInst *MI, unsigned Op,
794 const MCOperand &MO1 = MI->getOperand(Op);
795 const MCOperand &MO2 = MI->getOperand(Op + 1);
797 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
798 printOperand(MI, Op, O);
802 O << "[" << getRegisterName(MO1.getReg());
803 if (unsigned RegNum = MO2.getReg())
804 O << ", " << getRegisterName(RegNum);
808 void ARMInstPrinter::printThumbAddrModeImm5SOperand(const MCInst *MI,
812 const MCOperand &MO1 = MI->getOperand(Op);
813 const MCOperand &MO2 = MI->getOperand(Op + 1);
815 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
816 printOperand(MI, Op, O);
820 O << "[" << getRegisterName(MO1.getReg());
821 if (unsigned ImmOffs = MO2.getImm())
822 O << ", #" << ImmOffs * Scale;
826 void ARMInstPrinter::printThumbAddrModeImm5S1Operand(const MCInst *MI,
829 printThumbAddrModeImm5SOperand(MI, Op, O, 1);
832 void ARMInstPrinter::printThumbAddrModeImm5S2Operand(const MCInst *MI,
835 printThumbAddrModeImm5SOperand(MI, Op, O, 2);
838 void ARMInstPrinter::printThumbAddrModeImm5S4Operand(const MCInst *MI,
841 printThumbAddrModeImm5SOperand(MI, Op, O, 4);
844 void ARMInstPrinter::printThumbAddrModeSPOperand(const MCInst *MI, unsigned Op,
846 printThumbAddrModeImm5SOperand(MI, Op, O, 4);
849 // Constant shifts t2_so_reg is a 2-operand unit corresponding to the Thumb2
850 // register with shift forms.
852 // REG IMM, SH_OPC - e.g. R5, LSL #3
853 void ARMInstPrinter::printT2SOOperand(const MCInst *MI, unsigned OpNum,
855 const MCOperand &MO1 = MI->getOperand(OpNum);
856 const MCOperand &MO2 = MI->getOperand(OpNum+1);
858 unsigned Reg = MO1.getReg();
859 O << getRegisterName(Reg);
861 // Print the shift opc.
862 assert(MO2.isImm() && "Not a valid t2_so_reg value!");
863 ARM_AM::ShiftOpc ShOpc = ARM_AM::getSORegShOp(MO2.getImm());
864 O << ", " << ARM_AM::getShiftOpcStr(ShOpc);
865 if (ShOpc != ARM_AM::rrx)
866 O << " #" << translateShiftImm(ARM_AM::getSORegOffset(MO2.getImm()));
869 void ARMInstPrinter::printAddrModeImm12Operand(const MCInst *MI, unsigned OpNum,
871 const MCOperand &MO1 = MI->getOperand(OpNum);
872 const MCOperand &MO2 = MI->getOperand(OpNum+1);
874 if (!MO1.isReg()) { // FIXME: This is for CP entries, but isn't right.
875 printOperand(MI, OpNum, O);
879 O << "[" << getRegisterName(MO1.getReg());
881 int32_t OffImm = (int32_t)MO2.getImm();
882 bool isSub = OffImm < 0;
883 // Special value for #-0. All others are normal.
884 if (OffImm == INT32_MIN)
887 O << ", #-" << -OffImm;
889 O << ", #" << OffImm;
893 void ARMInstPrinter::printT2AddrModeImm8Operand(const MCInst *MI,
896 const MCOperand &MO1 = MI->getOperand(OpNum);
897 const MCOperand &MO2 = MI->getOperand(OpNum+1);
899 O << "[" << getRegisterName(MO1.getReg());
901 int32_t OffImm = (int32_t)MO2.getImm();
903 if (OffImm == INT32_MIN)
906 O << ", #-" << -OffImm;
908 O << ", #" << OffImm;
912 void ARMInstPrinter::printT2AddrModeImm8s4Operand(const MCInst *MI,
915 const MCOperand &MO1 = MI->getOperand(OpNum);
916 const MCOperand &MO2 = MI->getOperand(OpNum+1);
918 if (!MO1.isReg()) { // For label symbolic references.
919 printOperand(MI, OpNum, O);
923 O << "[" << getRegisterName(MO1.getReg());
925 int32_t OffImm = (int32_t)MO2.getImm() / 4;
928 O << ", #-" << -OffImm * 4;
930 O << ", #" << OffImm * 4;
934 void ARMInstPrinter::printT2AddrModeImm0_1020s4Operand(const MCInst *MI,
937 const MCOperand &MO1 = MI->getOperand(OpNum);
938 const MCOperand &MO2 = MI->getOperand(OpNum+1);
940 O << "[" << getRegisterName(MO1.getReg());
942 O << ", #" << MO2.getImm() * 4;
946 void ARMInstPrinter::printT2AddrModeImm8OffsetOperand(const MCInst *MI,
949 const MCOperand &MO1 = MI->getOperand(OpNum);
950 int32_t OffImm = (int32_t)MO1.getImm();
953 O << ", #-" << -OffImm;
955 O << ", #" << OffImm;
958 void ARMInstPrinter::printT2AddrModeImm8s4OffsetOperand(const MCInst *MI,
961 const MCOperand &MO1 = MI->getOperand(OpNum);
962 int32_t OffImm = (int32_t)MO1.getImm() / 4;
967 O << "#-" << -OffImm * 4;
969 O << "#" << OffImm * 4;
973 void ARMInstPrinter::printT2AddrModeSoRegOperand(const MCInst *MI,
976 const MCOperand &MO1 = MI->getOperand(OpNum);
977 const MCOperand &MO2 = MI->getOperand(OpNum+1);
978 const MCOperand &MO3 = MI->getOperand(OpNum+2);
980 O << "[" << getRegisterName(MO1.getReg());
982 assert(MO2.getReg() && "Invalid so_reg load / store address!");
983 O << ", " << getRegisterName(MO2.getReg());
985 unsigned ShAmt = MO3.getImm();
987 assert(ShAmt <= 3 && "Not a valid Thumb2 addressing mode!");
988 O << ", lsl #" << ShAmt;
993 void ARMInstPrinter::printFPImmOperand(const MCInst *MI, unsigned OpNum,
995 const MCOperand &MO = MI->getOperand(OpNum);
996 O << '#' << ARM_AM::getFPImmFloat(MO.getImm());
999 void ARMInstPrinter::printNEONModImmOperand(const MCInst *MI, unsigned OpNum,
1001 unsigned EncodedImm = MI->getOperand(OpNum).getImm();
1003 uint64_t Val = ARM_AM::decodeNEONModImm(EncodedImm, EltBits);
1008 void ARMInstPrinter::printImmPlusOneOperand(const MCInst *MI, unsigned OpNum,
1010 unsigned Imm = MI->getOperand(OpNum).getImm();
1011 O << "#" << Imm + 1;
1014 void ARMInstPrinter::printRotImmOperand(const MCInst *MI, unsigned OpNum,
1016 unsigned Imm = MI->getOperand(OpNum).getImm();
1021 default: assert (0 && "illegal ror immediate!");
1022 case 1: O << "8"; break;
1023 case 2: O << "16"; break;
1024 case 3: O << "24"; break;
1028 void ARMInstPrinter::printFBits16(const MCInst *MI, unsigned OpNum,
1030 O << "#" << 16 - MI->getOperand(OpNum).getImm();
1033 void ARMInstPrinter::printFBits32(const MCInst *MI, unsigned OpNum,
1035 O << "#" << 32 - MI->getOperand(OpNum).getImm();
1038 void ARMInstPrinter::printVectorIndex(const MCInst *MI, unsigned OpNum,
1040 O << "[" << MI->getOperand(OpNum).getImm() << "]";
1043 void ARMInstPrinter::printVectorListOne(const MCInst *MI, unsigned OpNum,
1045 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "}";
1048 void ARMInstPrinter::printVectorListTwo(const MCInst *MI, unsigned OpNum,
1050 unsigned Reg = MI->getOperand(OpNum).getReg();
1051 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1052 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_1);
1053 O << "{" << getRegisterName(Reg0) << ", " << getRegisterName(Reg1) << "}";
1056 void ARMInstPrinter::printVectorListTwoSpaced(const MCInst *MI,
1059 unsigned Reg = MI->getOperand(OpNum).getReg();
1060 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1061 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_2);
1062 O << "{" << getRegisterName(Reg0) << ", " << getRegisterName(Reg1) << "}";
1065 void ARMInstPrinter::printVectorListThree(const MCInst *MI, unsigned OpNum,
1067 // Normally, it's not safe to use register enum values directly with
1068 // addition to get the next register, but for VFP registers, the
1069 // sort order is guaranteed because they're all of the form D<n>.
1070 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1071 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << ", "
1072 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "}";
1075 void ARMInstPrinter::printVectorListFour(const MCInst *MI, unsigned OpNum,
1077 // Normally, it's not safe to use register enum values directly with
1078 // addition to get the next register, but for VFP registers, the
1079 // sort order is guaranteed because they're all of the form D<n>.
1080 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1081 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << ", "
1082 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1083 << getRegisterName(MI->getOperand(OpNum).getReg() + 3) << "}";
1086 void ARMInstPrinter::printVectorListOneAllLanes(const MCInst *MI,
1089 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[]}";
1092 void ARMInstPrinter::printVectorListTwoAllLanes(const MCInst *MI,
1095 unsigned Reg = MI->getOperand(OpNum).getReg();
1096 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1097 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_1);
1098 O << "{" << getRegisterName(Reg0) << "[], " << getRegisterName(Reg1) << "[]}";
1101 void ARMInstPrinter::printVectorListThreeAllLanes(const MCInst *MI,
1104 // Normally, it's not safe to use register enum values directly with
1105 // addition to get the next register, but for VFP registers, the
1106 // sort order is guaranteed because they're all of the form D<n>.
1107 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1108 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "[], "
1109 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[]}";
1112 void ARMInstPrinter::printVectorListFourAllLanes(const MCInst *MI,
1115 // Normally, it's not safe to use register enum values directly with
1116 // addition to get the next register, but for VFP registers, the
1117 // sort order is guaranteed because they're all of the form D<n>.
1118 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1119 << getRegisterName(MI->getOperand(OpNum).getReg() + 1) << "[], "
1120 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1121 << getRegisterName(MI->getOperand(OpNum).getReg() + 3) << "[]}";
1124 void ARMInstPrinter::printVectorListTwoSpacedAllLanes(const MCInst *MI,
1127 unsigned Reg = MI->getOperand(OpNum).getReg();
1128 unsigned Reg0 = MRI.getSubReg(Reg, ARM::dsub_0);
1129 unsigned Reg1 = MRI.getSubReg(Reg, ARM::dsub_2);
1130 O << "{" << getRegisterName(Reg0) << "[], " << getRegisterName(Reg1) << "[]}";
1133 void ARMInstPrinter::printVectorListThreeSpacedAllLanes(const MCInst *MI,
1136 // Normally, it's not safe to use register enum values directly with
1137 // addition to get the next register, but for VFP registers, the
1138 // sort order is guaranteed because they're all of the form D<n>.
1139 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1140 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1141 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "[]}";
1144 void ARMInstPrinter::printVectorListFourSpacedAllLanes(const MCInst *MI,
1147 // Normally, it's not safe to use register enum values directly with
1148 // addition to get the next register, but for VFP registers, the
1149 // sort order is guaranteed because they're all of the form D<n>.
1150 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << "[], "
1151 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << "[], "
1152 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "[], "
1153 << getRegisterName(MI->getOperand(OpNum).getReg() + 6) << "[]}";
1156 void ARMInstPrinter::printVectorListThreeSpaced(const MCInst *MI,
1159 // Normally, it's not safe to use register enum values directly with
1160 // addition to get the next register, but for VFP registers, the
1161 // sort order is guaranteed because they're all of the form D<n>.
1162 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1163 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1164 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << "}";
1167 void ARMInstPrinter::printVectorListFourSpaced(const MCInst *MI,
1170 // Normally, it's not safe to use register enum values directly with
1171 // addition to get the next register, but for VFP registers, the
1172 // sort order is guaranteed because they're all of the form D<n>.
1173 O << "{" << getRegisterName(MI->getOperand(OpNum).getReg()) << ", "
1174 << getRegisterName(MI->getOperand(OpNum).getReg() + 2) << ", "
1175 << getRegisterName(MI->getOperand(OpNum).getReg() + 4) << ", "
1176 << getRegisterName(MI->getOperand(OpNum).getReg() + 6) << "}";