1 //===-- AArch64BaseInfo.cpp - AArch64 Base encoding information------------===//
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 file provides basic encoding and assembly information for AArch64.
12 //===----------------------------------------------------------------------===//
13 #include "AArch64BaseInfo.h"
14 #include "llvm/ADT/APFloat.h"
15 #include "llvm/ADT/SmallVector.h"
16 #include "llvm/ADT/StringExtras.h"
17 #include "llvm/Support/Regex.h"
21 StringRef NamedImmMapper::toString(uint32_t Value, bool &Valid) const {
22 for (unsigned i = 0; i < NumPairs; ++i) {
23 if (Pairs[i].Value == Value) {
33 uint32_t NamedImmMapper::fromString(StringRef Name, bool &Valid) const {
34 std::string LowerCaseName = Name.lower();
35 for (unsigned i = 0; i < NumPairs; ++i) {
36 if (Pairs[i].Name == LowerCaseName) {
38 return Pairs[i].Value;
46 bool NamedImmMapper::validImm(uint32_t Value) const {
47 return Value < TooBigImm;
50 const NamedImmMapper::Mapping A64AT::ATMapper::ATPairs[] = {
65 A64AT::ATMapper::ATMapper()
66 : NamedImmMapper(ATPairs, 0) {}
68 const NamedImmMapper::Mapping A64DB::DBarrierMapper::DBarrierPairs[] = {
83 A64DB::DBarrierMapper::DBarrierMapper()
84 : NamedImmMapper(DBarrierPairs, 16u) {}
86 const NamedImmMapper::Mapping A64DC::DCMapper::DCPairs[] = {
97 A64DC::DCMapper::DCMapper()
98 : NamedImmMapper(DCPairs, 0) {}
100 const NamedImmMapper::Mapping A64IC::ICMapper::ICPairs[] = {
101 {"ialluis", IALLUIS},
106 A64IC::ICMapper::ICMapper()
107 : NamedImmMapper(ICPairs, 0) {}
109 const NamedImmMapper::Mapping A64ISB::ISBMapper::ISBPairs[] = {
113 A64ISB::ISBMapper::ISBMapper()
114 : NamedImmMapper(ISBPairs, 16) {}
116 const NamedImmMapper::Mapping A64PRFM::PRFMMapper::PRFMPairs[] = {
117 {"pldl1keep", PLDL1KEEP},
118 {"pldl1strm", PLDL1STRM},
119 {"pldl2keep", PLDL2KEEP},
120 {"pldl2strm", PLDL2STRM},
121 {"pldl3keep", PLDL3KEEP},
122 {"pldl3strm", PLDL3STRM},
123 {"pstl1keep", PSTL1KEEP},
124 {"pstl1strm", PSTL1STRM},
125 {"pstl2keep", PSTL2KEEP},
126 {"pstl2strm", PSTL2STRM},
127 {"pstl3keep", PSTL3KEEP},
128 {"pstl3strm", PSTL3STRM}
131 A64PRFM::PRFMMapper::PRFMMapper()
132 : NamedImmMapper(PRFMPairs, 32) {}
134 const NamedImmMapper::Mapping A64PState::PStateMapper::PStatePairs[] = {
136 {"daifset", DAIFSet},
140 A64PState::PStateMapper::PStateMapper()
141 : NamedImmMapper(PStatePairs, 0) {}
143 const NamedImmMapper::Mapping A64SysReg::MRSMapper::MRSPairs[] = {
144 {"mdccsr_el0", MDCCSR_EL0},
145 {"dbgdtrrx_el0", DBGDTRRX_EL0},
146 {"mdrar_el1", MDRAR_EL1},
147 {"oslsr_el1", OSLSR_EL1},
148 {"dbgauthstatus_el1", DBGAUTHSTATUS_EL1},
149 {"pmceid0_el0", PMCEID0_EL0},
150 {"pmceid1_el0", PMCEID1_EL0},
151 {"midr_el1", MIDR_EL1},
152 {"ccsidr_el1", CCSIDR_EL1},
153 {"clidr_el1", CLIDR_EL1},
154 {"ctr_el0", CTR_EL0},
155 {"mpidr_el1", MPIDR_EL1},
156 {"revidr_el1", REVIDR_EL1},
157 {"aidr_el1", AIDR_EL1},
158 {"dczid_el0", DCZID_EL0},
159 {"id_pfr0_el1", ID_PFR0_EL1},
160 {"id_pfr1_el1", ID_PFR1_EL1},
161 {"id_dfr0_el1", ID_DFR0_EL1},
162 {"id_afr0_el1", ID_AFR0_EL1},
163 {"id_mmfr0_el1", ID_MMFR0_EL1},
164 {"id_mmfr1_el1", ID_MMFR1_EL1},
165 {"id_mmfr2_el1", ID_MMFR2_EL1},
166 {"id_mmfr3_el1", ID_MMFR3_EL1},
167 {"id_isar0_el1", ID_ISAR0_EL1},
168 {"id_isar1_el1", ID_ISAR1_EL1},
169 {"id_isar2_el1", ID_ISAR2_EL1},
170 {"id_isar3_el1", ID_ISAR3_EL1},
171 {"id_isar4_el1", ID_ISAR4_EL1},
172 {"id_isar5_el1", ID_ISAR5_EL1},
173 {"id_aa64pfr0_el1", ID_AA64PFR0_EL1},
174 {"id_aa64pfr1_el1", ID_AA64PFR1_EL1},
175 {"id_aa64dfr0_el1", ID_AA64DFR0_EL1},
176 {"id_aa64dfr1_el1", ID_AA64DFR1_EL1},
177 {"id_aa64afr0_el1", ID_AA64AFR0_EL1},
178 {"id_aa64afr1_el1", ID_AA64AFR1_EL1},
179 {"id_aa64isar0_el1", ID_AA64ISAR0_EL1},
180 {"id_aa64isar1_el1", ID_AA64ISAR1_EL1},
181 {"id_aa64mmfr0_el1", ID_AA64MMFR0_EL1},
182 {"id_aa64mmfr1_el1", ID_AA64MMFR1_EL1},
183 {"mvfr0_el1", MVFR0_EL1},
184 {"mvfr1_el1", MVFR1_EL1},
185 {"mvfr2_el1", MVFR2_EL1},
186 {"rvbar_el1", RVBAR_EL1},
187 {"rvbar_el2", RVBAR_EL2},
188 {"rvbar_el3", RVBAR_EL3},
189 {"isr_el1", ISR_EL1},
190 {"cntpct_el0", CNTPCT_EL0},
191 {"cntvct_el0", CNTVCT_EL0}
194 A64SysReg::MRSMapper::MRSMapper() {
195 InstPairs = &MRSPairs[0];
196 NumInstPairs = llvm::array_lengthof(MRSPairs);
199 const NamedImmMapper::Mapping A64SysReg::MSRMapper::MSRPairs[] = {
200 {"dbgdtrtx_el0", DBGDTRTX_EL0},
201 {"oslar_el1", OSLAR_EL1},
202 {"pmswinc_el0", PMSWINC_EL0}
205 A64SysReg::MSRMapper::MSRMapper() {
206 InstPairs = &MSRPairs[0];
207 NumInstPairs = llvm::array_lengthof(MSRPairs);
211 const NamedImmMapper::Mapping A64SysReg::SysRegMapper::SysRegPairs[] = {
212 {"osdtrrx_el1", OSDTRRX_EL1},
213 {"osdtrtx_el1", OSDTRTX_EL1},
214 {"teecr32_el1", TEECR32_EL1},
215 {"mdccint_el1", MDCCINT_EL1},
216 {"mdscr_el1", MDSCR_EL1},
217 {"dbgdtr_el0", DBGDTR_EL0},
218 {"oseccr_el1", OSECCR_EL1},
219 {"dbgvcr32_el2", DBGVCR32_EL2},
220 {"dbgbvr0_el1", DBGBVR0_EL1},
221 {"dbgbvr1_el1", DBGBVR1_EL1},
222 {"dbgbvr2_el1", DBGBVR2_EL1},
223 {"dbgbvr3_el1", DBGBVR3_EL1},
224 {"dbgbvr4_el1", DBGBVR4_EL1},
225 {"dbgbvr5_el1", DBGBVR5_EL1},
226 {"dbgbvr6_el1", DBGBVR6_EL1},
227 {"dbgbvr7_el1", DBGBVR7_EL1},
228 {"dbgbvr8_el1", DBGBVR8_EL1},
229 {"dbgbvr9_el1", DBGBVR9_EL1},
230 {"dbgbvr10_el1", DBGBVR10_EL1},
231 {"dbgbvr11_el1", DBGBVR11_EL1},
232 {"dbgbvr12_el1", DBGBVR12_EL1},
233 {"dbgbvr13_el1", DBGBVR13_EL1},
234 {"dbgbvr14_el1", DBGBVR14_EL1},
235 {"dbgbvr15_el1", DBGBVR15_EL1},
236 {"dbgbcr0_el1", DBGBCR0_EL1},
237 {"dbgbcr1_el1", DBGBCR1_EL1},
238 {"dbgbcr2_el1", DBGBCR2_EL1},
239 {"dbgbcr3_el1", DBGBCR3_EL1},
240 {"dbgbcr4_el1", DBGBCR4_EL1},
241 {"dbgbcr5_el1", DBGBCR5_EL1},
242 {"dbgbcr6_el1", DBGBCR6_EL1},
243 {"dbgbcr7_el1", DBGBCR7_EL1},
244 {"dbgbcr8_el1", DBGBCR8_EL1},
245 {"dbgbcr9_el1", DBGBCR9_EL1},
246 {"dbgbcr10_el1", DBGBCR10_EL1},
247 {"dbgbcr11_el1", DBGBCR11_EL1},
248 {"dbgbcr12_el1", DBGBCR12_EL1},
249 {"dbgbcr13_el1", DBGBCR13_EL1},
250 {"dbgbcr14_el1", DBGBCR14_EL1},
251 {"dbgbcr15_el1", DBGBCR15_EL1},
252 {"dbgwvr0_el1", DBGWVR0_EL1},
253 {"dbgwvr1_el1", DBGWVR1_EL1},
254 {"dbgwvr2_el1", DBGWVR2_EL1},
255 {"dbgwvr3_el1", DBGWVR3_EL1},
256 {"dbgwvr4_el1", DBGWVR4_EL1},
257 {"dbgwvr5_el1", DBGWVR5_EL1},
258 {"dbgwvr6_el1", DBGWVR6_EL1},
259 {"dbgwvr7_el1", DBGWVR7_EL1},
260 {"dbgwvr8_el1", DBGWVR8_EL1},
261 {"dbgwvr9_el1", DBGWVR9_EL1},
262 {"dbgwvr10_el1", DBGWVR10_EL1},
263 {"dbgwvr11_el1", DBGWVR11_EL1},
264 {"dbgwvr12_el1", DBGWVR12_EL1},
265 {"dbgwvr13_el1", DBGWVR13_EL1},
266 {"dbgwvr14_el1", DBGWVR14_EL1},
267 {"dbgwvr15_el1", DBGWVR15_EL1},
268 {"dbgwcr0_el1", DBGWCR0_EL1},
269 {"dbgwcr1_el1", DBGWCR1_EL1},
270 {"dbgwcr2_el1", DBGWCR2_EL1},
271 {"dbgwcr3_el1", DBGWCR3_EL1},
272 {"dbgwcr4_el1", DBGWCR4_EL1},
273 {"dbgwcr5_el1", DBGWCR5_EL1},
274 {"dbgwcr6_el1", DBGWCR6_EL1},
275 {"dbgwcr7_el1", DBGWCR7_EL1},
276 {"dbgwcr8_el1", DBGWCR8_EL1},
277 {"dbgwcr9_el1", DBGWCR9_EL1},
278 {"dbgwcr10_el1", DBGWCR10_EL1},
279 {"dbgwcr11_el1", DBGWCR11_EL1},
280 {"dbgwcr12_el1", DBGWCR12_EL1},
281 {"dbgwcr13_el1", DBGWCR13_EL1},
282 {"dbgwcr14_el1", DBGWCR14_EL1},
283 {"dbgwcr15_el1", DBGWCR15_EL1},
284 {"teehbr32_el1", TEEHBR32_EL1},
285 {"osdlr_el1", OSDLR_EL1},
286 {"dbgprcr_el1", DBGPRCR_EL1},
287 {"dbgclaimset_el1", DBGCLAIMSET_EL1},
288 {"dbgclaimclr_el1", DBGCLAIMCLR_EL1},
289 {"csselr_el1", CSSELR_EL1},
290 {"vpidr_el2", VPIDR_EL2},
291 {"vmpidr_el2", VMPIDR_EL2},
292 {"sctlr_el1", SCTLR_EL1},
293 {"sctlr_el2", SCTLR_EL2},
294 {"sctlr_el3", SCTLR_EL3},
295 {"actlr_el1", ACTLR_EL1},
296 {"actlr_el2", ACTLR_EL2},
297 {"actlr_el3", ACTLR_EL3},
298 {"cpacr_el1", CPACR_EL1},
299 {"hcr_el2", HCR_EL2},
300 {"scr_el3", SCR_EL3},
301 {"mdcr_el2", MDCR_EL2},
302 {"sder32_el3", SDER32_EL3},
303 {"cptr_el2", CPTR_EL2},
304 {"cptr_el3", CPTR_EL3},
305 {"hstr_el2", HSTR_EL2},
306 {"hacr_el2", HACR_EL2},
307 {"mdcr_el3", MDCR_EL3},
308 {"ttbr0_el1", TTBR0_EL1},
309 {"ttbr0_el2", TTBR0_EL2},
310 {"ttbr0_el3", TTBR0_EL3},
311 {"ttbr1_el1", TTBR1_EL1},
312 {"tcr_el1", TCR_EL1},
313 {"tcr_el2", TCR_EL2},
314 {"tcr_el3", TCR_EL3},
315 {"vttbr_el2", VTTBR_EL2},
316 {"vtcr_el2", VTCR_EL2},
317 {"dacr32_el2", DACR32_EL2},
318 {"spsr_el1", SPSR_EL1},
319 {"spsr_el2", SPSR_EL2},
320 {"spsr_el3", SPSR_EL3},
321 {"elr_el1", ELR_EL1},
322 {"elr_el2", ELR_EL2},
323 {"elr_el3", ELR_EL3},
330 {"currentel", CurrentEL},
331 {"spsr_irq", SPSR_irq},
332 {"spsr_abt", SPSR_abt},
333 {"spsr_und", SPSR_und},
334 {"spsr_fiq", SPSR_fiq},
337 {"dspsr_el0", DSPSR_EL0},
338 {"dlr_el0", DLR_EL0},
339 {"ifsr32_el2", IFSR32_EL2},
340 {"afsr0_el1", AFSR0_EL1},
341 {"afsr0_el2", AFSR0_EL2},
342 {"afsr0_el3", AFSR0_EL3},
343 {"afsr1_el1", AFSR1_EL1},
344 {"afsr1_el2", AFSR1_EL2},
345 {"afsr1_el3", AFSR1_EL3},
346 {"esr_el1", ESR_EL1},
347 {"esr_el2", ESR_EL2},
348 {"esr_el3", ESR_EL3},
349 {"fpexc32_el2", FPEXC32_EL2},
350 {"far_el1", FAR_EL1},
351 {"far_el2", FAR_EL2},
352 {"far_el3", FAR_EL3},
353 {"hpfar_el2", HPFAR_EL2},
354 {"par_el1", PAR_EL1},
355 {"pmcr_el0", PMCR_EL0},
356 {"pmcntenset_el0", PMCNTENSET_EL0},
357 {"pmcntenclr_el0", PMCNTENCLR_EL0},
358 {"pmovsclr_el0", PMOVSCLR_EL0},
359 {"pmselr_el0", PMSELR_EL0},
360 {"pmccntr_el0", PMCCNTR_EL0},
361 {"pmxevtyper_el0", PMXEVTYPER_EL0},
362 {"pmxevcntr_el0", PMXEVCNTR_EL0},
363 {"pmuserenr_el0", PMUSERENR_EL0},
364 {"pmintenset_el1", PMINTENSET_EL1},
365 {"pmintenclr_el1", PMINTENCLR_EL1},
366 {"pmovsset_el0", PMOVSSET_EL0},
367 {"mair_el1", MAIR_EL1},
368 {"mair_el2", MAIR_EL2},
369 {"mair_el3", MAIR_EL3},
370 {"amair_el1", AMAIR_EL1},
371 {"amair_el2", AMAIR_EL2},
372 {"amair_el3", AMAIR_EL3},
373 {"vbar_el1", VBAR_EL1},
374 {"vbar_el2", VBAR_EL2},
375 {"vbar_el3", VBAR_EL3},
376 {"rmr_el1", RMR_EL1},
377 {"rmr_el2", RMR_EL2},
378 {"rmr_el3", RMR_EL3},
379 {"contextidr_el1", CONTEXTIDR_EL1},
380 {"tpidr_el0", TPIDR_EL0},
381 {"tpidr_el2", TPIDR_EL2},
382 {"tpidr_el3", TPIDR_EL3},
383 {"tpidrro_el0", TPIDRRO_EL0},
384 {"tpidr_el1", TPIDR_EL1},
385 {"cntfrq_el0", CNTFRQ_EL0},
386 {"cntvoff_el2", CNTVOFF_EL2},
387 {"cntkctl_el1", CNTKCTL_EL1},
388 {"cnthctl_el2", CNTHCTL_EL2},
389 {"cntp_tval_el0", CNTP_TVAL_EL0},
390 {"cnthp_tval_el2", CNTHP_TVAL_EL2},
391 {"cntps_tval_el1", CNTPS_TVAL_EL1},
392 {"cntp_ctl_el0", CNTP_CTL_EL0},
393 {"cnthp_ctl_el2", CNTHP_CTL_EL2},
394 {"cntps_ctl_el1", CNTPS_CTL_EL1},
395 {"cntp_cval_el0", CNTP_CVAL_EL0},
396 {"cnthp_cval_el2", CNTHP_CVAL_EL2},
397 {"cntps_cval_el1", CNTPS_CVAL_EL1},
398 {"cntv_tval_el0", CNTV_TVAL_EL0},
399 {"cntv_ctl_el0", CNTV_CTL_EL0},
400 {"cntv_cval_el0", CNTV_CVAL_EL0},
401 {"pmevcntr0_el0", PMEVCNTR0_EL0},
402 {"pmevcntr1_el0", PMEVCNTR1_EL0},
403 {"pmevcntr2_el0", PMEVCNTR2_EL0},
404 {"pmevcntr3_el0", PMEVCNTR3_EL0},
405 {"pmevcntr4_el0", PMEVCNTR4_EL0},
406 {"pmevcntr5_el0", PMEVCNTR5_EL0},
407 {"pmevcntr6_el0", PMEVCNTR6_EL0},
408 {"pmevcntr7_el0", PMEVCNTR7_EL0},
409 {"pmevcntr8_el0", PMEVCNTR8_EL0},
410 {"pmevcntr9_el0", PMEVCNTR9_EL0},
411 {"pmevcntr10_el0", PMEVCNTR10_EL0},
412 {"pmevcntr11_el0", PMEVCNTR11_EL0},
413 {"pmevcntr12_el0", PMEVCNTR12_EL0},
414 {"pmevcntr13_el0", PMEVCNTR13_EL0},
415 {"pmevcntr14_el0", PMEVCNTR14_EL0},
416 {"pmevcntr15_el0", PMEVCNTR15_EL0},
417 {"pmevcntr16_el0", PMEVCNTR16_EL0},
418 {"pmevcntr17_el0", PMEVCNTR17_EL0},
419 {"pmevcntr18_el0", PMEVCNTR18_EL0},
420 {"pmevcntr19_el0", PMEVCNTR19_EL0},
421 {"pmevcntr20_el0", PMEVCNTR20_EL0},
422 {"pmevcntr21_el0", PMEVCNTR21_EL0},
423 {"pmevcntr22_el0", PMEVCNTR22_EL0},
424 {"pmevcntr23_el0", PMEVCNTR23_EL0},
425 {"pmevcntr24_el0", PMEVCNTR24_EL0},
426 {"pmevcntr25_el0", PMEVCNTR25_EL0},
427 {"pmevcntr26_el0", PMEVCNTR26_EL0},
428 {"pmevcntr27_el0", PMEVCNTR27_EL0},
429 {"pmevcntr28_el0", PMEVCNTR28_EL0},
430 {"pmevcntr29_el0", PMEVCNTR29_EL0},
431 {"pmevcntr30_el0", PMEVCNTR30_EL0},
432 {"pmccfiltr_el0", PMCCFILTR_EL0},
433 {"pmevtyper0_el0", PMEVTYPER0_EL0},
434 {"pmevtyper1_el0", PMEVTYPER1_EL0},
435 {"pmevtyper2_el0", PMEVTYPER2_EL0},
436 {"pmevtyper3_el0", PMEVTYPER3_EL0},
437 {"pmevtyper4_el0", PMEVTYPER4_EL0},
438 {"pmevtyper5_el0", PMEVTYPER5_EL0},
439 {"pmevtyper6_el0", PMEVTYPER6_EL0},
440 {"pmevtyper7_el0", PMEVTYPER7_EL0},
441 {"pmevtyper8_el0", PMEVTYPER8_EL0},
442 {"pmevtyper9_el0", PMEVTYPER9_EL0},
443 {"pmevtyper10_el0", PMEVTYPER10_EL0},
444 {"pmevtyper11_el0", PMEVTYPER11_EL0},
445 {"pmevtyper12_el0", PMEVTYPER12_EL0},
446 {"pmevtyper13_el0", PMEVTYPER13_EL0},
447 {"pmevtyper14_el0", PMEVTYPER14_EL0},
448 {"pmevtyper15_el0", PMEVTYPER15_EL0},
449 {"pmevtyper16_el0", PMEVTYPER16_EL0},
450 {"pmevtyper17_el0", PMEVTYPER17_EL0},
451 {"pmevtyper18_el0", PMEVTYPER18_EL0},
452 {"pmevtyper19_el0", PMEVTYPER19_EL0},
453 {"pmevtyper20_el0", PMEVTYPER20_EL0},
454 {"pmevtyper21_el0", PMEVTYPER21_EL0},
455 {"pmevtyper22_el0", PMEVTYPER22_EL0},
456 {"pmevtyper23_el0", PMEVTYPER23_EL0},
457 {"pmevtyper24_el0", PMEVTYPER24_EL0},
458 {"pmevtyper25_el0", PMEVTYPER25_EL0},
459 {"pmevtyper26_el0", PMEVTYPER26_EL0},
460 {"pmevtyper27_el0", PMEVTYPER27_EL0},
461 {"pmevtyper28_el0", PMEVTYPER28_EL0},
462 {"pmevtyper29_el0", PMEVTYPER29_EL0},
463 {"pmevtyper30_el0", PMEVTYPER30_EL0},
467 A64SysReg::SysRegMapper::fromString(StringRef Name, bool &Valid) const {
468 // First search the registers shared by all
469 std::string NameLower = Name.lower();
470 for (unsigned i = 0; i < array_lengthof(SysRegPairs); ++i) {
471 if (SysRegPairs[i].Name == NameLower) {
473 return SysRegPairs[i].Value;
477 // Now try the instruction-specific registers (either read-only or
479 for (unsigned i = 0; i < NumInstPairs; ++i) {
480 if (InstPairs[i].Name == NameLower) {
482 return InstPairs[i].Value;
486 // Try to parse an S<op0>_<op1>_<Cn>_<Cm>_<op2> register name, where the bits
487 // are: 11 xxx 1x11 xxxx xxx
488 Regex GenericRegPattern("^s3_([0-7])_c(1[15])_c([0-9]|1[0-5])_([0-7])$");
490 SmallVector<StringRef, 4> Ops;
491 if (!GenericRegPattern.match(NameLower, &Ops)) {
496 uint32_t Op0 = 3, Op1 = 0, CRn = 0, CRm = 0, Op2 = 0;
498 Ops[1].getAsInteger(10, Op1);
499 Ops[2].getAsInteger(10, CRn);
500 Ops[3].getAsInteger(10, CRm);
501 Ops[4].getAsInteger(10, Op2);
502 Bits = (Op0 << 14) | (Op1 << 11) | (CRn << 7) | (CRm << 3) | Op2;
509 A64SysReg::SysRegMapper::toString(uint32_t Bits, bool &Valid) const {
510 for (unsigned i = 0; i < array_lengthof(SysRegPairs); ++i) {
511 if (SysRegPairs[i].Value == Bits) {
513 return SysRegPairs[i].Name;
517 for (unsigned i = 0; i < NumInstPairs; ++i) {
518 if (InstPairs[i].Value == Bits) {
520 return InstPairs[i].Name;
524 uint32_t Op0 = (Bits >> 14) & 0x3;
525 uint32_t Op1 = (Bits >> 11) & 0x7;
526 uint32_t CRn = (Bits >> 7) & 0xf;
527 uint32_t CRm = (Bits >> 3) & 0xf;
528 uint32_t Op2 = Bits & 0x7;
530 // Only combinations matching: 11 xxx 1x11 xxxx xxx are valid for a generic
532 if (Op0 != 3 || (CRn != 11 && CRn != 15)) {
537 assert(Op0 == 3 && (CRn == 11 || CRn == 15) && "Invalid generic sysreg");
540 return "s3_" + utostr(Op1) + "_c" + utostr(CRn)
541 + "_c" + utostr(CRm) + "_" + utostr(Op2);
544 const NamedImmMapper::Mapping A64TLBI::TLBIMapper::TLBIPairs[] = {
545 {"ipas2e1is", IPAS2E1IS},
546 {"ipas2le1is", IPAS2LE1IS},
547 {"vmalle1is", VMALLE1IS},
548 {"alle2is", ALLE2IS},
549 {"alle3is", ALLE3IS},
553 {"aside1is", ASIDE1IS},
554 {"vaae1is", VAAE1IS},
555 {"alle1is", ALLE1IS},
556 {"vale1is", VALE1IS},
557 {"vale2is", VALE2IS},
558 {"vale3is", VALE3IS},
559 {"vmalls12e1is", VMALLS12E1IS},
560 {"vaale1is", VAALE1IS},
561 {"ipas2e1", IPAS2E1},
562 {"ipas2le1", IPAS2LE1},
563 {"vmalle1", VMALLE1},
575 {"vmalls12e1", VMALLS12E1},
579 A64TLBI::TLBIMapper::TLBIMapper()
580 : NamedImmMapper(TLBIPairs, 0) {}
582 bool A64Imms::isFPImm(const APFloat &Val, uint32_t &Imm8Bits) {
583 const fltSemantics &Sem = Val.getSemantics();
584 unsigned FracBits = APFloat::semanticsPrecision(Sem) - 1;
588 case 10: // IEEE half-precision
591 case 23: // IEEE single-precision
594 case 52: // IEEE double-precision
597 case 112: // IEEE quad-precision
598 // No immediates are valid for double precision.
601 llvm_unreachable("Only half, single and double precision supported");
604 uint32_t ExpStart = FracBits;
605 uint64_t FracMask = (1ULL << FracBits) - 1;
607 uint32_t Sign = Val.isNegative();
609 uint64_t Bits= Val.bitcastToAPInt().getLimitedValue();
610 uint64_t Fraction = Bits & FracMask;
611 int32_t Exponent = ((Bits >> ExpStart) & ExpMask);
612 Exponent -= ExpMask >> 1;
614 // S[d] = imm8<7>:NOT(imm8<6>):Replicate(imm8<6>, 5):imm8<5:0>:Zeros(19)
615 // D[d] = imm8<7>:NOT(imm8<6>):Replicate(imm8<6>, 8):imm8<5:0>:Zeros(48)
616 // This translates to: only 4 bits of fraction; -3 <= exp <= 4.
617 uint64_t A64FracStart = FracBits - 4;
618 uint64_t A64FracMask = 0xf;
620 // Are there too many fraction bits?
621 if (Fraction & ~(A64FracMask << A64FracStart))
624 if (Exponent < -3 || Exponent > 4)
627 uint32_t PackedFraction = (Fraction >> A64FracStart) & A64FracMask;
628 uint32_t PackedExp = (Exponent + 7) & 0x7;
630 Imm8Bits = (Sign << 7) | (PackedExp << 4) | PackedFraction;
634 // Encoding of the immediate for logical (immediate) instructions:
636 // | N | imms | immr | size | R | S |
637 // |---+--------+--------+------+--------------+--------------|
638 // | 1 | ssssss | rrrrrr | 64 | UInt(rrrrrr) | UInt(ssssss) |
639 // | 0 | 0sssss | xrrrrr | 32 | UInt(rrrrr) | UInt(sssss) |
640 // | 0 | 10ssss | xxrrrr | 16 | UInt(rrrr) | UInt(ssss) |
641 // | 0 | 110sss | xxxrrr | 8 | UInt(rrr) | UInt(sss) |
642 // | 0 | 1110ss | xxxxrr | 4 | UInt(rr) | UInt(ss) |
643 // | 0 | 11110s | xxxxxr | 2 | UInt(r) | UInt(s) |
644 // | 0 | 11111x | - | | UNALLOCATED | |
646 // Columns 'R', 'S' and 'size' specify a "bitmask immediate" of size bits in
647 // which the lower S+1 bits are ones and the remaining bits are zero, then
648 // rotated right by R bits, which is then replicated across the datapath.
650 // + Values of 'N', 'imms' and 'immr' which do not match the above table are
652 // + If all 's' bits in the imms field are set then the instruction is
654 // + The 'x' bits in the 'immr' field are IGNORED.
656 bool A64Imms::isLogicalImm(unsigned RegWidth, uint64_t Imm, uint32_t &Bits) {
661 // Because there are S+1 ones in the replicated mask, an immediate of all
662 // zeros is not allowed. Filtering it here is probably more efficient.
663 if (Imm == 0) return false;
665 for (RepeatWidth = RegWidth; RepeatWidth > 1; RepeatWidth /= 2) {
666 uint64_t RepeatMask = RepeatWidth == 64 ? -1 : (1ULL << RepeatWidth) - 1;
667 uint64_t ReplicatedMask = Imm & RepeatMask;
669 if (ReplicatedMask == 0) continue;
671 // First we have to make sure the mask is actually repeated in each slot for
672 // this width-specifier.
673 bool IsReplicatedMask = true;
674 for (unsigned i = RepeatWidth; i < RegWidth; i += RepeatWidth) {
675 if (((Imm >> i) & RepeatMask) != ReplicatedMask) {
676 IsReplicatedMask = false;
680 if (!IsReplicatedMask) continue;
682 // Now we have to work out the amount of rotation needed. The first part of
683 // this calculation is actually independent of RepeatWidth, but the complex
684 // case will depend on it.
685 Rotation = CountTrailingZeros_64(Imm);
687 // There were no leading zeros, which means it's either in place or there
688 // are 1s at each end (e.g. 0x8003 needs rotating).
689 Rotation = RegWidth == 64 ? CountLeadingOnes_64(Imm)
690 : CountLeadingOnes_32(Imm);
691 Rotation = RepeatWidth - Rotation;
694 uint64_t ReplicatedOnes = (ReplicatedMask >> Rotation)
695 | ((ReplicatedMask << (RepeatWidth - Rotation)) & RepeatMask);
696 // Of course, they may not actually be ones, so we have to check that:
697 if (!isMask_64(ReplicatedOnes))
700 Num1s = CountTrailingOnes_64(ReplicatedOnes);
702 // We know we've got an almost valid encoding (certainly, if this is invalid
703 // no other parameters would work).
707 // The encodings which would produce all 1s are RESERVED.
708 if (RepeatWidth == 1 || Num1s == RepeatWidth) return false;
710 uint32_t N = RepeatWidth == 64;
711 uint32_t ImmR = RepeatWidth - Rotation;
712 uint32_t ImmS = Num1s - 1;
714 switch (RepeatWidth) {
715 default: break; // No action required for other valid rotations.
716 case 16: ImmS |= 0x20; break; // 10ssss
717 case 8: ImmS |= 0x30; break; // 110sss
718 case 4: ImmS |= 0x38; break; // 1110ss
719 case 2: ImmS |= 0x3c; break; // 11110s
722 Bits = ImmS | (ImmR << 6) | (N << 12);
728 bool A64Imms::isLogicalImmBits(unsigned RegWidth, uint32_t Bits, uint64_t &Imm) {
729 uint32_t N = Bits >> 12;
730 uint32_t ImmR = (Bits >> 6) & 0x3f;
731 uint32_t ImmS = Bits & 0x3f;
733 // N=1 encodes a 64-bit replication and is invalid for the 32-bit
735 if (RegWidth == 32 && N != 0) return false;
740 else if ((ImmS & 0x20) == 0)
742 else if ((ImmS & 0x10) == 0)
744 else if ((ImmS & 0x08) == 0)
746 else if ((ImmS & 0x04) == 0)
748 else if ((ImmS & 0x02) == 0)
751 // ImmS is 0b11111x: UNALLOCATED
755 int Num1s = (ImmS & (Width - 1)) + 1;
757 // All encodings which would map to -1 (signed) are RESERVED.
758 if (Num1s == Width) return false;
760 int Rotation = (ImmR & (Width - 1));
761 uint64_t Mask = (1ULL << Num1s) - 1;
762 uint64_t WidthMask = Width == 64 ? -1 : (1ULL << Width) - 1;
763 Mask = (Mask >> Rotation)
764 | ((Mask << (Width - Rotation)) & WidthMask);
767 for (unsigned i = 0; i < RegWidth / Width; ++i) {
775 bool A64Imms::isMOVZImm(int RegWidth, uint64_t Value, int &UImm16, int &Shift) {
776 // If high bits are set then a 32-bit MOVZ can't possibly work.
777 if (RegWidth == 32 && (Value & ~0xffffffffULL))
780 for (int i = 0; i < RegWidth; i += 16) {
781 // If the value is 0 when we mask out all the bits that could be set with
782 // the current LSL value then it's representable.
783 if ((Value & ~(0xffffULL << i)) == 0) {
785 UImm16 = (Value >> i) & 0xffff;
792 bool A64Imms::isMOVNImm(int RegWidth, uint64_t Value, int &UImm16, int &Shift) {
793 // MOVN is defined to set its register to NOT(LSL(imm16, shift)).
795 // We have to be a little careful about a 32-bit register: 0xffff_1234 *is*
796 // representable, but ~0xffff_1234 == 0xffff_ffff_0000_edcb which is not
797 // a valid input for isMOVZImm.
798 if (RegWidth == 32 && (Value & ~0xffffffffULL))
801 uint64_t MOVZEquivalent = RegWidth == 32 ? ~Value & 0xffffffff : ~Value;
803 return isMOVZImm(RegWidth, MOVZEquivalent, UImm16, Shift);
806 bool A64Imms::isOnlyMOVNImm(int RegWidth, uint64_t Value,
807 int &UImm16, int &Shift) {
808 if (isMOVZImm(RegWidth, Value, UImm16, Shift))
811 return isMOVNImm(RegWidth, Value, UImm16, Shift);