1 //===-- ARMMCTargetDesc.cpp - ARM Target Descriptions ---------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file provides ARM specific target descriptions.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "ARMMCTargetDesc.h"
14 #include "ARMAddressingModes.h"
15 #include "ARMBaseInfo.h"
16 #include "ARMInstPrinter.h"
17 #include "ARMMCAsmInfo.h"
18 #include "TargetInfo/ARMTargetInfo.h"
19 #include "llvm/ADT/Triple.h"
20 #include "llvm/DebugInfo/CodeView/CodeView.h"
21 #include "llvm/MC/MCAsmBackend.h"
22 #include "llvm/MC/MCCodeEmitter.h"
23 #include "llvm/MC/MCELFStreamer.h"
24 #include "llvm/MC/MCInstrAnalysis.h"
25 #include "llvm/MC/MCInstrInfo.h"
26 #include "llvm/MC/MCObjectWriter.h"
27 #include "llvm/MC/MCRegisterInfo.h"
28 #include "llvm/MC/MCStreamer.h"
29 #include "llvm/MC/MCSubtargetInfo.h"
30 #include "llvm/Support/ErrorHandling.h"
31 #include "llvm/Support/TargetParser.h"
32 #include "llvm/Support/TargetRegistry.h"
33
34 using namespace llvm;
35
36 #define GET_REGINFO_MC_DESC
37 #include "ARMGenRegisterInfo.inc"
38
getMCRDeprecationInfo(MCInst & MI,const MCSubtargetInfo & STI,std::string & Info)39 static bool getMCRDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
40 std::string &Info) {
41 if (STI.getFeatureBits()[llvm::ARM::HasV7Ops] &&
42 (MI.getOperand(0).isImm() && MI.getOperand(0).getImm() == 15) &&
43 (MI.getOperand(1).isImm() && MI.getOperand(1).getImm() == 0) &&
44 // Checks for the deprecated CP15ISB encoding:
45 // mcr p15, #0, rX, c7, c5, #4
46 (MI.getOperand(3).isImm() && MI.getOperand(3).getImm() == 7)) {
47 if ((MI.getOperand(5).isImm() && MI.getOperand(5).getImm() == 4)) {
48 if (MI.getOperand(4).isImm() && MI.getOperand(4).getImm() == 5) {
49 Info = "deprecated since v7, use 'isb'";
50 return true;
51 }
52
53 // Checks for the deprecated CP15DSB encoding:
54 // mcr p15, #0, rX, c7, c10, #4
55 if (MI.getOperand(4).isImm() && MI.getOperand(4).getImm() == 10) {
56 Info = "deprecated since v7, use 'dsb'";
57 return true;
58 }
59 }
60 // Checks for the deprecated CP15DMB encoding:
61 // mcr p15, #0, rX, c7, c10, #5
62 if (MI.getOperand(4).isImm() && MI.getOperand(4).getImm() == 10 &&
63 (MI.getOperand(5).isImm() && MI.getOperand(5).getImm() == 5)) {
64 Info = "deprecated since v7, use 'dmb'";
65 return true;
66 }
67 }
68 if (STI.getFeatureBits()[llvm::ARM::HasV7Ops] &&
69 ((MI.getOperand(0).isImm() && MI.getOperand(0).getImm() == 10) ||
70 (MI.getOperand(0).isImm() && MI.getOperand(0).getImm() == 11))) {
71 Info = "since v7, cp10 and cp11 are reserved for advanced SIMD or floating "
72 "point instructions";
73 return true;
74 }
75 return false;
76 }
77
getMRCDeprecationInfo(MCInst & MI,const MCSubtargetInfo & STI,std::string & Info)78 static bool getMRCDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
79 std::string &Info) {
80 if (STI.getFeatureBits()[llvm::ARM::HasV7Ops] &&
81 ((MI.getOperand(0).isImm() && MI.getOperand(0).getImm() == 10) ||
82 (MI.getOperand(0).isImm() && MI.getOperand(0).getImm() == 11))) {
83 Info = "since v7, cp10 and cp11 are reserved for advanced SIMD or floating "
84 "point instructions";
85 return true;
86 }
87 return false;
88 }
89
getITDeprecationInfo(MCInst & MI,const MCSubtargetInfo & STI,std::string & Info)90 static bool getITDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
91 std::string &Info) {
92 if (STI.getFeatureBits()[llvm::ARM::HasV8Ops] && MI.getOperand(1).isImm() &&
93 MI.getOperand(1).getImm() != 8) {
94 Info = "applying IT instruction to more than one subsequent instruction is "
95 "deprecated";
96 return true;
97 }
98
99 return false;
100 }
101
getARMStoreDeprecationInfo(MCInst & MI,const MCSubtargetInfo & STI,std::string & Info)102 static bool getARMStoreDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
103 std::string &Info) {
104 assert(!STI.getFeatureBits()[llvm::ARM::ModeThumb] &&
105 "cannot predicate thumb instructions");
106
107 assert(MI.getNumOperands() >= 4 && "expected >= 4 arguments");
108 for (unsigned OI = 4, OE = MI.getNumOperands(); OI < OE; ++OI) {
109 assert(MI.getOperand(OI).isReg() && "expected register");
110 if (MI.getOperand(OI).getReg() == ARM::PC) {
111 Info = "use of PC in the list is deprecated";
112 return true;
113 }
114 }
115 return false;
116 }
117
getARMLoadDeprecationInfo(MCInst & MI,const MCSubtargetInfo & STI,std::string & Info)118 static bool getARMLoadDeprecationInfo(MCInst &MI, const MCSubtargetInfo &STI,
119 std::string &Info) {
120 assert(!STI.getFeatureBits()[llvm::ARM::ModeThumb] &&
121 "cannot predicate thumb instructions");
122
123 assert(MI.getNumOperands() >= 4 && "expected >= 4 arguments");
124 bool ListContainsPC = false, ListContainsLR = false;
125 for (unsigned OI = 4, OE = MI.getNumOperands(); OI < OE; ++OI) {
126 assert(MI.getOperand(OI).isReg() && "expected register");
127 switch (MI.getOperand(OI).getReg()) {
128 default:
129 break;
130 case ARM::LR:
131 ListContainsLR = true;
132 break;
133 case ARM::PC:
134 ListContainsPC = true;
135 break;
136 }
137 }
138
139 if (ListContainsPC && ListContainsLR) {
140 Info = "use of LR and PC simultaneously in the list is deprecated";
141 return true;
142 }
143
144 return false;
145 }
146
147 #define GET_INSTRINFO_MC_DESC
148 #include "ARMGenInstrInfo.inc"
149
150 #define GET_SUBTARGETINFO_MC_DESC
151 #include "ARMGenSubtargetInfo.inc"
152
ParseARMTriple(const Triple & TT,StringRef CPU)153 std::string ARM_MC::ParseARMTriple(const Triple &TT, StringRef CPU) {
154 std::string ARMArchFeature;
155
156 ARM::ArchKind ArchID = ARM::parseArch(TT.getArchName());
157 if (ArchID != ARM::ArchKind::INVALID && (CPU.empty() || CPU == "generic"))
158 ARMArchFeature = (ARMArchFeature + "+" + ARM::getArchName(ArchID)).str();
159
160 if (TT.isThumb()) {
161 if (!ARMArchFeature.empty())
162 ARMArchFeature += ",";
163 ARMArchFeature += "+thumb-mode,+v4t";
164 }
165
166 if (TT.isOSNaCl()) {
167 if (!ARMArchFeature.empty())
168 ARMArchFeature += ",";
169 ARMArchFeature += "+nacl-trap";
170 }
171
172 if (TT.isOSWindows()) {
173 if (!ARMArchFeature.empty())
174 ARMArchFeature += ",";
175 ARMArchFeature += "+noarm";
176 }
177
178 return ARMArchFeature;
179 }
180
isPredicated(const MCInst & MI,const MCInstrInfo * MCII)181 bool ARM_MC::isPredicated(const MCInst &MI, const MCInstrInfo *MCII) {
182 const MCInstrDesc &Desc = MCII->get(MI.getOpcode());
183 int PredOpIdx = Desc.findFirstPredOperandIdx();
184 return PredOpIdx != -1 && MI.getOperand(PredOpIdx).getImm() != ARMCC::AL;
185 }
186
isCPSRDefined(const MCInst & MI,const MCInstrInfo * MCII)187 bool ARM_MC::isCPSRDefined(const MCInst &MI, const MCInstrInfo *MCII) {
188 const MCInstrDesc &Desc = MCII->get(MI.getOpcode());
189 for (unsigned I = 0; I < MI.getNumOperands(); ++I) {
190 const MCOperand &MO = MI.getOperand(I);
191 if (MO.isReg() && MO.getReg() == ARM::CPSR &&
192 Desc.OpInfo[I].isOptionalDef())
193 return true;
194 }
195 return false;
196 }
197
evaluateBranchTarget(const MCInstrDesc & InstDesc,uint64_t Addr,int64_t Imm)198 uint64_t ARM_MC::evaluateBranchTarget(const MCInstrDesc &InstDesc,
199 uint64_t Addr, int64_t Imm) {
200 // For ARM instructions the PC offset is 8 bytes, for Thumb instructions it
201 // is 4 bytes.
202 uint64_t Offset =
203 ((InstDesc.TSFlags & ARMII::FormMask) == ARMII::ThumbFrm) ? 4 : 8;
204
205 // A Thumb instruction BLX(i) can be 16-bit aligned while targets Arm code
206 // which is 32-bit aligned. The target address for the case is calculated as
207 // targetAddress = Align(PC,4) + imm32;
208 // where
209 // Align(x, y) = y * (x DIV y);
210 if (InstDesc.getOpcode() == ARM::tBLXi)
211 Addr &= ~0x3;
212
213 return Addr + Imm + Offset;
214 }
215
createARMMCSubtargetInfo(const Triple & TT,StringRef CPU,StringRef FS)216 MCSubtargetInfo *ARM_MC::createARMMCSubtargetInfo(const Triple &TT,
217 StringRef CPU, StringRef FS) {
218 std::string ArchFS = ARM_MC::ParseARMTriple(TT, CPU);
219 if (!FS.empty()) {
220 if (!ArchFS.empty())
221 ArchFS = (Twine(ArchFS) + "," + FS).str();
222 else
223 ArchFS = std::string(FS);
224 }
225
226 return createARMMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, ArchFS);
227 }
228
createARMMCInstrInfo()229 static MCInstrInfo *createARMMCInstrInfo() {
230 MCInstrInfo *X = new MCInstrInfo();
231 InitARMMCInstrInfo(X);
232 return X;
233 }
234
initLLVMToCVRegMapping(MCRegisterInfo * MRI)235 void ARM_MC::initLLVMToCVRegMapping(MCRegisterInfo *MRI) {
236 // Mapping from CodeView to MC register id.
237 static const struct {
238 codeview::RegisterId CVReg;
239 MCPhysReg Reg;
240 } RegMap[] = {
241 {codeview::RegisterId::ARM_R0, ARM::R0},
242 {codeview::RegisterId::ARM_R1, ARM::R1},
243 {codeview::RegisterId::ARM_R2, ARM::R2},
244 {codeview::RegisterId::ARM_R3, ARM::R3},
245 {codeview::RegisterId::ARM_R4, ARM::R4},
246 {codeview::RegisterId::ARM_R5, ARM::R5},
247 {codeview::RegisterId::ARM_R6, ARM::R6},
248 {codeview::RegisterId::ARM_R7, ARM::R7},
249 {codeview::RegisterId::ARM_R8, ARM::R8},
250 {codeview::RegisterId::ARM_R9, ARM::R9},
251 {codeview::RegisterId::ARM_R10, ARM::R10},
252 {codeview::RegisterId::ARM_R11, ARM::R11},
253 {codeview::RegisterId::ARM_R12, ARM::R12},
254 {codeview::RegisterId::ARM_SP, ARM::SP},
255 {codeview::RegisterId::ARM_LR, ARM::LR},
256 {codeview::RegisterId::ARM_PC, ARM::PC},
257 {codeview::RegisterId::ARM_CPSR, ARM::CPSR},
258 {codeview::RegisterId::ARM_FPSCR, ARM::FPSCR},
259 {codeview::RegisterId::ARM_FPEXC, ARM::FPEXC},
260 {codeview::RegisterId::ARM_FS0, ARM::S0},
261 {codeview::RegisterId::ARM_FS1, ARM::S1},
262 {codeview::RegisterId::ARM_FS2, ARM::S2},
263 {codeview::RegisterId::ARM_FS3, ARM::S3},
264 {codeview::RegisterId::ARM_FS4, ARM::S4},
265 {codeview::RegisterId::ARM_FS5, ARM::S5},
266 {codeview::RegisterId::ARM_FS6, ARM::S6},
267 {codeview::RegisterId::ARM_FS7, ARM::S7},
268 {codeview::RegisterId::ARM_FS8, ARM::S8},
269 {codeview::RegisterId::ARM_FS9, ARM::S9},
270 {codeview::RegisterId::ARM_FS10, ARM::S10},
271 {codeview::RegisterId::ARM_FS11, ARM::S11},
272 {codeview::RegisterId::ARM_FS12, ARM::S12},
273 {codeview::RegisterId::ARM_FS13, ARM::S13},
274 {codeview::RegisterId::ARM_FS14, ARM::S14},
275 {codeview::RegisterId::ARM_FS15, ARM::S15},
276 {codeview::RegisterId::ARM_FS16, ARM::S16},
277 {codeview::RegisterId::ARM_FS17, ARM::S17},
278 {codeview::RegisterId::ARM_FS18, ARM::S18},
279 {codeview::RegisterId::ARM_FS19, ARM::S19},
280 {codeview::RegisterId::ARM_FS20, ARM::S20},
281 {codeview::RegisterId::ARM_FS21, ARM::S21},
282 {codeview::RegisterId::ARM_FS22, ARM::S22},
283 {codeview::RegisterId::ARM_FS23, ARM::S23},
284 {codeview::RegisterId::ARM_FS24, ARM::S24},
285 {codeview::RegisterId::ARM_FS25, ARM::S25},
286 {codeview::RegisterId::ARM_FS26, ARM::S26},
287 {codeview::RegisterId::ARM_FS27, ARM::S27},
288 {codeview::RegisterId::ARM_FS28, ARM::S28},
289 {codeview::RegisterId::ARM_FS29, ARM::S29},
290 {codeview::RegisterId::ARM_FS30, ARM::S30},
291 {codeview::RegisterId::ARM_FS31, ARM::S31},
292 {codeview::RegisterId::ARM_ND0, ARM::D0},
293 {codeview::RegisterId::ARM_ND1, ARM::D1},
294 {codeview::RegisterId::ARM_ND2, ARM::D2},
295 {codeview::RegisterId::ARM_ND3, ARM::D3},
296 {codeview::RegisterId::ARM_ND4, ARM::D4},
297 {codeview::RegisterId::ARM_ND5, ARM::D5},
298 {codeview::RegisterId::ARM_ND6, ARM::D6},
299 {codeview::RegisterId::ARM_ND7, ARM::D7},
300 {codeview::RegisterId::ARM_ND8, ARM::D8},
301 {codeview::RegisterId::ARM_ND9, ARM::D9},
302 {codeview::RegisterId::ARM_ND10, ARM::D10},
303 {codeview::RegisterId::ARM_ND11, ARM::D11},
304 {codeview::RegisterId::ARM_ND12, ARM::D12},
305 {codeview::RegisterId::ARM_ND13, ARM::D13},
306 {codeview::RegisterId::ARM_ND14, ARM::D14},
307 {codeview::RegisterId::ARM_ND15, ARM::D15},
308 {codeview::RegisterId::ARM_ND16, ARM::D16},
309 {codeview::RegisterId::ARM_ND17, ARM::D17},
310 {codeview::RegisterId::ARM_ND18, ARM::D18},
311 {codeview::RegisterId::ARM_ND19, ARM::D19},
312 {codeview::RegisterId::ARM_ND20, ARM::D20},
313 {codeview::RegisterId::ARM_ND21, ARM::D21},
314 {codeview::RegisterId::ARM_ND22, ARM::D22},
315 {codeview::RegisterId::ARM_ND23, ARM::D23},
316 {codeview::RegisterId::ARM_ND24, ARM::D24},
317 {codeview::RegisterId::ARM_ND25, ARM::D25},
318 {codeview::RegisterId::ARM_ND26, ARM::D26},
319 {codeview::RegisterId::ARM_ND27, ARM::D27},
320 {codeview::RegisterId::ARM_ND28, ARM::D28},
321 {codeview::RegisterId::ARM_ND29, ARM::D29},
322 {codeview::RegisterId::ARM_ND30, ARM::D30},
323 {codeview::RegisterId::ARM_ND31, ARM::D31},
324 {codeview::RegisterId::ARM_NQ0, ARM::Q0},
325 {codeview::RegisterId::ARM_NQ1, ARM::Q1},
326 {codeview::RegisterId::ARM_NQ2, ARM::Q2},
327 {codeview::RegisterId::ARM_NQ3, ARM::Q3},
328 {codeview::RegisterId::ARM_NQ4, ARM::Q4},
329 {codeview::RegisterId::ARM_NQ5, ARM::Q5},
330 {codeview::RegisterId::ARM_NQ6, ARM::Q6},
331 {codeview::RegisterId::ARM_NQ7, ARM::Q7},
332 {codeview::RegisterId::ARM_NQ8, ARM::Q8},
333 {codeview::RegisterId::ARM_NQ9, ARM::Q9},
334 {codeview::RegisterId::ARM_NQ10, ARM::Q10},
335 {codeview::RegisterId::ARM_NQ11, ARM::Q11},
336 {codeview::RegisterId::ARM_NQ12, ARM::Q12},
337 {codeview::RegisterId::ARM_NQ13, ARM::Q13},
338 {codeview::RegisterId::ARM_NQ14, ARM::Q14},
339 {codeview::RegisterId::ARM_NQ15, ARM::Q15},
340 };
341 for (unsigned I = 0; I < array_lengthof(RegMap); ++I)
342 MRI->mapLLVMRegToCVReg(RegMap[I].Reg, static_cast<int>(RegMap[I].CVReg));
343 }
344
createARMMCRegisterInfo(const Triple & Triple)345 static MCRegisterInfo *createARMMCRegisterInfo(const Triple &Triple) {
346 MCRegisterInfo *X = new MCRegisterInfo();
347 InitARMMCRegisterInfo(X, ARM::LR, 0, 0, ARM::PC);
348 ARM_MC::initLLVMToCVRegMapping(X);
349 return X;
350 }
351
createARMMCAsmInfo(const MCRegisterInfo & MRI,const Triple & TheTriple,const MCTargetOptions & Options)352 static MCAsmInfo *createARMMCAsmInfo(const MCRegisterInfo &MRI,
353 const Triple &TheTriple,
354 const MCTargetOptions &Options) {
355 MCAsmInfo *MAI;
356 if (TheTriple.isOSDarwin() || TheTriple.isOSBinFormatMachO())
357 MAI = new ARMMCAsmInfoDarwin(TheTriple);
358 else if (TheTriple.isWindowsMSVCEnvironment())
359 MAI = new ARMCOFFMCAsmInfoMicrosoft();
360 else if (TheTriple.isOSWindows())
361 MAI = new ARMCOFFMCAsmInfoGNU();
362 else
363 MAI = new ARMELFMCAsmInfo(TheTriple);
364
365 unsigned Reg = MRI.getDwarfRegNum(ARM::SP, true);
366 MAI->addInitialFrameState(MCCFIInstruction::cfiDefCfa(nullptr, Reg, 0));
367
368 return MAI;
369 }
370
createELFStreamer(const Triple & T,MCContext & Ctx,std::unique_ptr<MCAsmBackend> && MAB,std::unique_ptr<MCObjectWriter> && OW,std::unique_ptr<MCCodeEmitter> && Emitter,bool RelaxAll)371 static MCStreamer *createELFStreamer(const Triple &T, MCContext &Ctx,
372 std::unique_ptr<MCAsmBackend> &&MAB,
373 std::unique_ptr<MCObjectWriter> &&OW,
374 std::unique_ptr<MCCodeEmitter> &&Emitter,
375 bool RelaxAll) {
376 return createARMELFStreamer(
377 Ctx, std::move(MAB), std::move(OW), std::move(Emitter), false,
378 (T.getArch() == Triple::thumb || T.getArch() == Triple::thumbeb),
379 T.isAndroid());
380 }
381
382 static MCStreamer *
createARMMachOStreamer(MCContext & Ctx,std::unique_ptr<MCAsmBackend> && MAB,std::unique_ptr<MCObjectWriter> && OW,std::unique_ptr<MCCodeEmitter> && Emitter,bool RelaxAll,bool DWARFMustBeAtTheEnd)383 createARMMachOStreamer(MCContext &Ctx, std::unique_ptr<MCAsmBackend> &&MAB,
384 std::unique_ptr<MCObjectWriter> &&OW,
385 std::unique_ptr<MCCodeEmitter> &&Emitter, bool RelaxAll,
386 bool DWARFMustBeAtTheEnd) {
387 return createMachOStreamer(Ctx, std::move(MAB), std::move(OW),
388 std::move(Emitter), false, DWARFMustBeAtTheEnd);
389 }
390
createARMMCInstPrinter(const Triple & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI)391 static MCInstPrinter *createARMMCInstPrinter(const Triple &T,
392 unsigned SyntaxVariant,
393 const MCAsmInfo &MAI,
394 const MCInstrInfo &MII,
395 const MCRegisterInfo &MRI) {
396 if (SyntaxVariant == 0)
397 return new ARMInstPrinter(MAI, MII, MRI);
398 return nullptr;
399 }
400
createARMMCRelocationInfo(const Triple & TT,MCContext & Ctx)401 static MCRelocationInfo *createARMMCRelocationInfo(const Triple &TT,
402 MCContext &Ctx) {
403 if (TT.isOSBinFormatMachO())
404 return createARMMachORelocationInfo(Ctx);
405 // Default to the stock relocation info.
406 return llvm::createMCRelocationInfo(TT, Ctx);
407 }
408
409 namespace {
410
411 class ARMMCInstrAnalysis : public MCInstrAnalysis {
412 public:
ARMMCInstrAnalysis(const MCInstrInfo * Info)413 ARMMCInstrAnalysis(const MCInstrInfo *Info) : MCInstrAnalysis(Info) {}
414
isUnconditionalBranch(const MCInst & Inst) const415 bool isUnconditionalBranch(const MCInst &Inst) const override {
416 // BCCs with the "always" predicate are unconditional branches.
417 if (Inst.getOpcode() == ARM::Bcc && Inst.getOperand(1).getImm()==ARMCC::AL)
418 return true;
419 return MCInstrAnalysis::isUnconditionalBranch(Inst);
420 }
421
isConditionalBranch(const MCInst & Inst) const422 bool isConditionalBranch(const MCInst &Inst) const override {
423 // BCCs with the "always" predicate are unconditional branches.
424 if (Inst.getOpcode() == ARM::Bcc && Inst.getOperand(1).getImm()==ARMCC::AL)
425 return false;
426 return MCInstrAnalysis::isConditionalBranch(Inst);
427 }
428
evaluateBranch(const MCInst & Inst,uint64_t Addr,uint64_t Size,uint64_t & Target) const429 bool evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size,
430 uint64_t &Target) const override {
431 const MCInstrDesc &Desc = Info->get(Inst.getOpcode());
432
433 // Find the PC-relative immediate operand in the instruction.
434 for (unsigned OpNum = 0; OpNum < Desc.getNumOperands(); ++OpNum) {
435 if (Inst.getOperand(OpNum).isImm() &&
436 Desc.OpInfo[OpNum].OperandType == MCOI::OPERAND_PCREL) {
437 int64_t Imm = Inst.getOperand(OpNum).getImm();
438 Target = ARM_MC::evaluateBranchTarget(Desc, Addr, Imm);
439 return true;
440 }
441 }
442 return false;
443 }
444 };
445
446 }
447
createARMMCInstrAnalysis(const MCInstrInfo * Info)448 static MCInstrAnalysis *createARMMCInstrAnalysis(const MCInstrInfo *Info) {
449 return new ARMMCInstrAnalysis(Info);
450 }
451
isCDECoproc(size_t Coproc,const MCSubtargetInfo & STI)452 bool ARM::isCDECoproc(size_t Coproc, const MCSubtargetInfo &STI) {
453 // Unfortunately we don't have ARMTargetInfo in the disassembler, so we have
454 // to rely on feature bits.
455 if (Coproc >= 8)
456 return false;
457 return STI.getFeatureBits()[ARM::FeatureCoprocCDE0 + Coproc];
458 }
459
460 // Force static initialization.
LLVMInitializeARMTargetMC()461 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeARMTargetMC() {
462 for (Target *T : {&getTheARMLETarget(), &getTheARMBETarget(),
463 &getTheThumbLETarget(), &getTheThumbBETarget()}) {
464 // Register the MC asm info.
465 RegisterMCAsmInfoFn X(*T, createARMMCAsmInfo);
466
467 // Register the MC instruction info.
468 TargetRegistry::RegisterMCInstrInfo(*T, createARMMCInstrInfo);
469
470 // Register the MC register info.
471 TargetRegistry::RegisterMCRegInfo(*T, createARMMCRegisterInfo);
472
473 // Register the MC subtarget info.
474 TargetRegistry::RegisterMCSubtargetInfo(*T,
475 ARM_MC::createARMMCSubtargetInfo);
476
477 TargetRegistry::RegisterELFStreamer(*T, createELFStreamer);
478 TargetRegistry::RegisterCOFFStreamer(*T, createARMWinCOFFStreamer);
479 TargetRegistry::RegisterMachOStreamer(*T, createARMMachOStreamer);
480
481 // Register the obj target streamer.
482 TargetRegistry::RegisterObjectTargetStreamer(*T,
483 createARMObjectTargetStreamer);
484
485 // Register the asm streamer.
486 TargetRegistry::RegisterAsmTargetStreamer(*T, createARMTargetAsmStreamer);
487
488 // Register the null TargetStreamer.
489 TargetRegistry::RegisterNullTargetStreamer(*T, createARMNullTargetStreamer);
490
491 // Register the MCInstPrinter.
492 TargetRegistry::RegisterMCInstPrinter(*T, createARMMCInstPrinter);
493
494 // Register the MC relocation info.
495 TargetRegistry::RegisterMCRelocationInfo(*T, createARMMCRelocationInfo);
496 }
497
498 // Register the MC instruction analyzer.
499 for (Target *T : {&getTheARMLETarget(), &getTheARMBETarget(),
500 &getTheThumbLETarget(), &getTheThumbBETarget()})
501 TargetRegistry::RegisterMCInstrAnalysis(*T, createARMMCInstrAnalysis);
502
503 for (Target *T : {&getTheARMLETarget(), &getTheThumbLETarget()}) {
504 TargetRegistry::RegisterMCCodeEmitter(*T, createARMLEMCCodeEmitter);
505 TargetRegistry::RegisterMCAsmBackend(*T, createARMLEAsmBackend);
506 }
507 for (Target *T : {&getTheARMBETarget(), &getTheThumbBETarget()}) {
508 TargetRegistry::RegisterMCCodeEmitter(*T, createARMBEMCCodeEmitter);
509 TargetRegistry::RegisterMCAsmBackend(*T, createARMBEAsmBackend);
510 }
511 }
512