xref: /openbmc/qemu/target/arm/cpu-features.h (revision 73b49878) 
1 /*
2  * QEMU Arm CPU -- feature test functions
3  *
4  *  Copyright (c) 2023 Linaro Ltd
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #ifndef TARGET_ARM_FEATURES_H
21 #define TARGET_ARM_FEATURES_H
22 
23 #include "hw/registerfields.h"
24 
25 /*
26  * Naming convention for isar_feature functions:
27  * Functions which test 32-bit ID registers should have _aa32_ in
28  * their name. Functions which test 64-bit ID registers should have
29  * _aa64_ in their name. These must only be used in code where we
30  * know for certain that the CPU has AArch32 or AArch64 respectively
31  * or where the correct answer for a CPU which doesn't implement that
32  * CPU state is "false" (eg when generating A32 or A64 code, if adding
33  * system registers that are specific to that CPU state, for "should
34  * we let this system register bit be set" tests where the 32-bit
35  * flavour of the register doesn't have the bit, and so on).
36  * Functions which simply ask "does this feature exist at all" have
37  * _any_ in their name, and always return the logical OR of the _aa64_
38  * and the _aa32_ function.
39  */
40 
41 /*
42  * 32-bit feature tests via id registers.
43  */
44 static inline bool isar_feature_aa32_thumb_div(const ARMISARegisters *id)
45 {
46     return FIELD_EX32(id->id_isar0, ID_ISAR0, DIVIDE) != 0;
47 }
48 
49 static inline bool isar_feature_aa32_arm_div(const ARMISARegisters *id)
50 {
51     return FIELD_EX32(id->id_isar0, ID_ISAR0, DIVIDE) > 1;
52 }
53 
54 static inline bool isar_feature_aa32_lob(const ARMISARegisters *id)
55 {
56     /* (M-profile) low-overhead loops and branch future */
57     return FIELD_EX32(id->id_isar0, ID_ISAR0, CMPBRANCH) >= 3;
58 }
59 
60 static inline bool isar_feature_aa32_jazelle(const ARMISARegisters *id)
61 {
62     return FIELD_EX32(id->id_isar1, ID_ISAR1, JAZELLE) != 0;
63 }
64 
65 static inline bool isar_feature_aa32_aes(const ARMISARegisters *id)
66 {
67     return FIELD_EX32(id->id_isar5, ID_ISAR5, AES) != 0;
68 }
69 
70 static inline bool isar_feature_aa32_pmull(const ARMISARegisters *id)
71 {
72     return FIELD_EX32(id->id_isar5, ID_ISAR5, AES) > 1;
73 }
74 
75 static inline bool isar_feature_aa32_sha1(const ARMISARegisters *id)
76 {
77     return FIELD_EX32(id->id_isar5, ID_ISAR5, SHA1) != 0;
78 }
79 
80 static inline bool isar_feature_aa32_sha2(const ARMISARegisters *id)
81 {
82     return FIELD_EX32(id->id_isar5, ID_ISAR5, SHA2) != 0;
83 }
84 
85 static inline bool isar_feature_aa32_crc32(const ARMISARegisters *id)
86 {
87     return FIELD_EX32(id->id_isar5, ID_ISAR5, CRC32) != 0;
88 }
89 
90 static inline bool isar_feature_aa32_rdm(const ARMISARegisters *id)
91 {
92     return FIELD_EX32(id->id_isar5, ID_ISAR5, RDM) != 0;
93 }
94 
95 static inline bool isar_feature_aa32_vcma(const ARMISARegisters *id)
96 {
97     return FIELD_EX32(id->id_isar5, ID_ISAR5, VCMA) != 0;
98 }
99 
100 static inline bool isar_feature_aa32_jscvt(const ARMISARegisters *id)
101 {
102     return FIELD_EX32(id->id_isar6, ID_ISAR6, JSCVT) != 0;
103 }
104 
105 static inline bool isar_feature_aa32_dp(const ARMISARegisters *id)
106 {
107     return FIELD_EX32(id->id_isar6, ID_ISAR6, DP) != 0;
108 }
109 
110 static inline bool isar_feature_aa32_fhm(const ARMISARegisters *id)
111 {
112     return FIELD_EX32(id->id_isar6, ID_ISAR6, FHM) != 0;
113 }
114 
115 static inline bool isar_feature_aa32_sb(const ARMISARegisters *id)
116 {
117     return FIELD_EX32(id->id_isar6, ID_ISAR6, SB) != 0;
118 }
119 
120 static inline bool isar_feature_aa32_predinv(const ARMISARegisters *id)
121 {
122     return FIELD_EX32(id->id_isar6, ID_ISAR6, SPECRES) != 0;
123 }
124 
125 static inline bool isar_feature_aa32_bf16(const ARMISARegisters *id)
126 {
127     return FIELD_EX32(id->id_isar6, ID_ISAR6, BF16) != 0;
128 }
129 
130 static inline bool isar_feature_aa32_i8mm(const ARMISARegisters *id)
131 {
132     return FIELD_EX32(id->id_isar6, ID_ISAR6, I8MM) != 0;
133 }
134 
135 static inline bool isar_feature_aa32_ras(const ARMISARegisters *id)
136 {
137     return FIELD_EX32(id->id_pfr0, ID_PFR0, RAS) != 0;
138 }
139 
140 static inline bool isar_feature_aa32_mprofile(const ARMISARegisters *id)
141 {
142     return FIELD_EX32(id->id_pfr1, ID_PFR1, MPROGMOD) != 0;
143 }
144 
145 static inline bool isar_feature_aa32_m_sec_state(const ARMISARegisters *id)
146 {
147     /*
148      * Return true if M-profile state handling insns
149      * (VSCCLRM, CLRM, FPCTX access insns) are implemented
150      */
151     return FIELD_EX32(id->id_pfr1, ID_PFR1, SECURITY) >= 3;
152 }
153 
154 static inline bool isar_feature_aa32_fp16_arith(const ARMISARegisters *id)
155 {
156     /* Sadly this is encoded differently for A-profile and M-profile */
157     if (isar_feature_aa32_mprofile(id)) {
158         return FIELD_EX32(id->mvfr1, MVFR1, FP16) > 0;
159     } else {
160         return FIELD_EX32(id->mvfr1, MVFR1, FPHP) >= 3;
161     }
162 }
163 
164 static inline bool isar_feature_aa32_mve(const ARMISARegisters *id)
165 {
166     /*
167      * Return true if MVE is supported (either integer or floating point).
168      * We must check for M-profile as the MVFR1 field means something
169      * else for A-profile.
170      */
171     return isar_feature_aa32_mprofile(id) &&
172         FIELD_EX32(id->mvfr1, MVFR1, MVE) > 0;
173 }
174 
175 static inline bool isar_feature_aa32_mve_fp(const ARMISARegisters *id)
176 {
177     /*
178      * Return true if MVE is supported (either integer or floating point).
179      * We must check for M-profile as the MVFR1 field means something
180      * else for A-profile.
181      */
182     return isar_feature_aa32_mprofile(id) &&
183         FIELD_EX32(id->mvfr1, MVFR1, MVE) >= 2;
184 }
185 
186 static inline bool isar_feature_aa32_vfp_simd(const ARMISARegisters *id)
187 {
188     /*
189      * Return true if either VFP or SIMD is implemented.
190      * In this case, a minimum of VFP w/ D0-D15.
191      */
192     return FIELD_EX32(id->mvfr0, MVFR0, SIMDREG) > 0;
193 }
194 
195 static inline bool isar_feature_aa32_simd_r32(const ARMISARegisters *id)
196 {
197     /* Return true if D16-D31 are implemented */
198     return FIELD_EX32(id->mvfr0, MVFR0, SIMDREG) >= 2;
199 }
200 
201 static inline bool isar_feature_aa32_fpshvec(const ARMISARegisters *id)
202 {
203     return FIELD_EX32(id->mvfr0, MVFR0, FPSHVEC) > 0;
204 }
205 
206 static inline bool isar_feature_aa32_fpsp_v2(const ARMISARegisters *id)
207 {
208     /* Return true if CPU supports single precision floating point, VFPv2 */
209     return FIELD_EX32(id->mvfr0, MVFR0, FPSP) > 0;
210 }
211 
212 static inline bool isar_feature_aa32_fpsp_v3(const ARMISARegisters *id)
213 {
214     /* Return true if CPU supports single precision floating point, VFPv3 */
215     return FIELD_EX32(id->mvfr0, MVFR0, FPSP) >= 2;
216 }
217 
218 static inline bool isar_feature_aa32_fpdp_v2(const ARMISARegisters *id)
219 {
220     /* Return true if CPU supports double precision floating point, VFPv2 */
221     return FIELD_EX32(id->mvfr0, MVFR0, FPDP) > 0;
222 }
223 
224 static inline bool isar_feature_aa32_fpdp_v3(const ARMISARegisters *id)
225 {
226     /* Return true if CPU supports double precision floating point, VFPv3 */
227     return FIELD_EX32(id->mvfr0, MVFR0, FPDP) >= 2;
228 }
229 
230 static inline bool isar_feature_aa32_vfp(const ARMISARegisters *id)
231 {
232     return isar_feature_aa32_fpsp_v2(id) || isar_feature_aa32_fpdp_v2(id);
233 }
234 
235 /*
236  * We always set the FP and SIMD FP16 fields to indicate identical
237  * levels of support (assuming SIMD is implemented at all), so
238  * we only need one set of accessors.
239  */
240 static inline bool isar_feature_aa32_fp16_spconv(const ARMISARegisters *id)
241 {
242     return FIELD_EX32(id->mvfr1, MVFR1, FPHP) > 0;
243 }
244 
245 static inline bool isar_feature_aa32_fp16_dpconv(const ARMISARegisters *id)
246 {
247     return FIELD_EX32(id->mvfr1, MVFR1, FPHP) > 1;
248 }
249 
250 /*
251  * Note that this ID register field covers both VFP and Neon FMAC,
252  * so should usually be tested in combination with some other
253  * check that confirms the presence of whichever of VFP or Neon is
254  * relevant, to avoid accidentally enabling a Neon feature on
255  * a VFP-no-Neon core or vice-versa.
256  */
257 static inline bool isar_feature_aa32_simdfmac(const ARMISARegisters *id)
258 {
259     return FIELD_EX32(id->mvfr1, MVFR1, SIMDFMAC) != 0;
260 }
261 
262 static inline bool isar_feature_aa32_vsel(const ARMISARegisters *id)
263 {
264     return FIELD_EX32(id->mvfr2, MVFR2, FPMISC) >= 1;
265 }
266 
267 static inline bool isar_feature_aa32_vcvt_dr(const ARMISARegisters *id)
268 {
269     return FIELD_EX32(id->mvfr2, MVFR2, FPMISC) >= 2;
270 }
271 
272 static inline bool isar_feature_aa32_vrint(const ARMISARegisters *id)
273 {
274     return FIELD_EX32(id->mvfr2, MVFR2, FPMISC) >= 3;
275 }
276 
277 static inline bool isar_feature_aa32_vminmaxnm(const ARMISARegisters *id)
278 {
279     return FIELD_EX32(id->mvfr2, MVFR2, FPMISC) >= 4;
280 }
281 
282 static inline bool isar_feature_aa32_pxn(const ARMISARegisters *id)
283 {
284     return FIELD_EX32(id->id_mmfr0, ID_MMFR0, VMSA) >= 4;
285 }
286 
287 static inline bool isar_feature_aa32_pan(const ARMISARegisters *id)
288 {
289     return FIELD_EX32(id->id_mmfr3, ID_MMFR3, PAN) != 0;
290 }
291 
292 static inline bool isar_feature_aa32_ats1e1(const ARMISARegisters *id)
293 {
294     return FIELD_EX32(id->id_mmfr3, ID_MMFR3, PAN) >= 2;
295 }
296 
297 static inline bool isar_feature_aa32_pmuv3p1(const ARMISARegisters *id)
298 {
299     /* 0xf means "non-standard IMPDEF PMU" */
300     return FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) >= 4 &&
301         FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) != 0xf;
302 }
303 
304 static inline bool isar_feature_aa32_pmuv3p4(const ARMISARegisters *id)
305 {
306     /* 0xf means "non-standard IMPDEF PMU" */
307     return FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) >= 5 &&
308         FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) != 0xf;
309 }
310 
311 static inline bool isar_feature_aa32_pmuv3p5(const ARMISARegisters *id)
312 {
313     /* 0xf means "non-standard IMPDEF PMU" */
314     return FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) >= 6 &&
315         FIELD_EX32(id->id_dfr0, ID_DFR0, PERFMON) != 0xf;
316 }
317 
318 static inline bool isar_feature_aa32_hpd(const ARMISARegisters *id)
319 {
320     return FIELD_EX32(id->id_mmfr4, ID_MMFR4, HPDS) != 0;
321 }
322 
323 static inline bool isar_feature_aa32_ac2(const ARMISARegisters *id)
324 {
325     return FIELD_EX32(id->id_mmfr4, ID_MMFR4, AC2) != 0;
326 }
327 
328 static inline bool isar_feature_aa32_ccidx(const ARMISARegisters *id)
329 {
330     return FIELD_EX32(id->id_mmfr4, ID_MMFR4, CCIDX) != 0;
331 }
332 
333 static inline bool isar_feature_aa32_tts2uxn(const ARMISARegisters *id)
334 {
335     return FIELD_EX32(id->id_mmfr4, ID_MMFR4, XNX) != 0;
336 }
337 
338 static inline bool isar_feature_aa32_half_evt(const ARMISARegisters *id)
339 {
340     return FIELD_EX32(id->id_mmfr4, ID_MMFR4, EVT) >= 1;
341 }
342 
343 static inline bool isar_feature_aa32_evt(const ARMISARegisters *id)
344 {
345     return FIELD_EX32(id->id_mmfr4, ID_MMFR4, EVT) >= 2;
346 }
347 
348 static inline bool isar_feature_aa32_dit(const ARMISARegisters *id)
349 {
350     return FIELD_EX32(id->id_pfr0, ID_PFR0, DIT) != 0;
351 }
352 
353 static inline bool isar_feature_aa32_ssbs(const ARMISARegisters *id)
354 {
355     return FIELD_EX32(id->id_pfr2, ID_PFR2, SSBS) != 0;
356 }
357 
358 static inline bool isar_feature_aa32_debugv7p1(const ARMISARegisters *id)
359 {
360     return FIELD_EX32(id->id_dfr0, ID_DFR0, COPDBG) >= 5;
361 }
362 
363 static inline bool isar_feature_aa32_debugv8p2(const ARMISARegisters *id)
364 {
365     return FIELD_EX32(id->id_dfr0, ID_DFR0, COPDBG) >= 8;
366 }
367 
368 static inline bool isar_feature_aa32_doublelock(const ARMISARegisters *id)
369 {
370     return FIELD_EX32(id->dbgdevid, DBGDEVID, DOUBLELOCK) > 0;
371 }
372 
373 /*
374  * 64-bit feature tests via id registers.
375  */
376 static inline bool isar_feature_aa64_aes(const ARMISARegisters *id)
377 {
378     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, AES) != 0;
379 }
380 
381 static inline bool isar_feature_aa64_pmull(const ARMISARegisters *id)
382 {
383     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, AES) > 1;
384 }
385 
386 static inline bool isar_feature_aa64_sha1(const ARMISARegisters *id)
387 {
388     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, SHA1) != 0;
389 }
390 
391 static inline bool isar_feature_aa64_sha256(const ARMISARegisters *id)
392 {
393     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, SHA2) != 0;
394 }
395 
396 static inline bool isar_feature_aa64_sha512(const ARMISARegisters *id)
397 {
398     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, SHA2) > 1;
399 }
400 
401 static inline bool isar_feature_aa64_crc32(const ARMISARegisters *id)
402 {
403     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, CRC32) != 0;
404 }
405 
406 static inline bool isar_feature_aa64_atomics(const ARMISARegisters *id)
407 {
408     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, ATOMIC) != 0;
409 }
410 
411 static inline bool isar_feature_aa64_rdm(const ARMISARegisters *id)
412 {
413     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, RDM) != 0;
414 }
415 
416 static inline bool isar_feature_aa64_sha3(const ARMISARegisters *id)
417 {
418     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, SHA3) != 0;
419 }
420 
421 static inline bool isar_feature_aa64_sm3(const ARMISARegisters *id)
422 {
423     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, SM3) != 0;
424 }
425 
426 static inline bool isar_feature_aa64_sm4(const ARMISARegisters *id)
427 {
428     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, SM4) != 0;
429 }
430 
431 static inline bool isar_feature_aa64_dp(const ARMISARegisters *id)
432 {
433     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, DP) != 0;
434 }
435 
436 static inline bool isar_feature_aa64_fhm(const ARMISARegisters *id)
437 {
438     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, FHM) != 0;
439 }
440 
441 static inline bool isar_feature_aa64_condm_4(const ARMISARegisters *id)
442 {
443     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, TS) != 0;
444 }
445 
446 static inline bool isar_feature_aa64_condm_5(const ARMISARegisters *id)
447 {
448     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, TS) >= 2;
449 }
450 
451 static inline bool isar_feature_aa64_rndr(const ARMISARegisters *id)
452 {
453     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, RNDR) != 0;
454 }
455 
456 static inline bool isar_feature_aa64_tlbirange(const ARMISARegisters *id)
457 {
458     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, TLB) == 2;
459 }
460 
461 static inline bool isar_feature_aa64_tlbios(const ARMISARegisters *id)
462 {
463     return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, TLB) != 0;
464 }
465 
466 static inline bool isar_feature_aa64_jscvt(const ARMISARegisters *id)
467 {
468     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, JSCVT) != 0;
469 }
470 
471 static inline bool isar_feature_aa64_fcma(const ARMISARegisters *id)
472 {
473     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, FCMA) != 0;
474 }
475 
476 /*
477  * These are the values from APA/API/APA3.
478  * In general these must be compared '>=', per the normal Arm ARM
479  * treatment of fields in ID registers.
480  */
481 typedef enum {
482     PauthFeat_None         = 0,
483     PauthFeat_1            = 1,
484     PauthFeat_EPAC         = 2,
485     PauthFeat_2            = 3,
486     PauthFeat_FPAC         = 4,
487     PauthFeat_FPACCOMBINED = 5,
488 } ARMPauthFeature;
489 
490 static inline ARMPauthFeature
491 isar_feature_pauth_feature(const ARMISARegisters *id)
492 {
493     /*
494      * Architecturally, only one of {APA,API,APA3} may be active (non-zero)
495      * and the other two must be zero.  Thus we may avoid conditionals.
496      */
497     return (FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, APA) |
498             FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, API) |
499             FIELD_EX64(id->id_aa64isar2, ID_AA64ISAR2, APA3));
500 }
501 
502 static inline bool isar_feature_aa64_pauth(const ARMISARegisters *id)
503 {
504     /*
505      * Return true if any form of pauth is enabled, as this
506      * predicate controls migration of the 128-bit keys.
507      */
508     return isar_feature_pauth_feature(id) != PauthFeat_None;
509 }
510 
511 static inline bool isar_feature_aa64_pauth_qarma5(const ARMISARegisters *id)
512 {
513     /*
514      * Return true if pauth is enabled with the architected QARMA5 algorithm.
515      * QEMU will always enable or disable both APA and GPA.
516      */
517     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, APA) != 0;
518 }
519 
520 static inline bool isar_feature_aa64_pauth_qarma3(const ARMISARegisters *id)
521 {
522     /*
523      * Return true if pauth is enabled with the architected QARMA3 algorithm.
524      * QEMU will always enable or disable both APA3 and GPA3.
525      */
526     return FIELD_EX64(id->id_aa64isar2, ID_AA64ISAR2, APA3) != 0;
527 }
528 
529 static inline bool isar_feature_aa64_sb(const ARMISARegisters *id)
530 {
531     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, SB) != 0;
532 }
533 
534 static inline bool isar_feature_aa64_predinv(const ARMISARegisters *id)
535 {
536     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, SPECRES) != 0;
537 }
538 
539 static inline bool isar_feature_aa64_frint(const ARMISARegisters *id)
540 {
541     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, FRINTTS) != 0;
542 }
543 
544 static inline bool isar_feature_aa64_dcpop(const ARMISARegisters *id)
545 {
546     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, DPB) != 0;
547 }
548 
549 static inline bool isar_feature_aa64_dcpodp(const ARMISARegisters *id)
550 {
551     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, DPB) >= 2;
552 }
553 
554 static inline bool isar_feature_aa64_bf16(const ARMISARegisters *id)
555 {
556     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, BF16) != 0;
557 }
558 
559 static inline bool isar_feature_aa64_rcpc_8_3(const ARMISARegisters *id)
560 {
561     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, LRCPC) != 0;
562 }
563 
564 static inline bool isar_feature_aa64_rcpc_8_4(const ARMISARegisters *id)
565 {
566     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, LRCPC) >= 2;
567 }
568 
569 static inline bool isar_feature_aa64_i8mm(const ARMISARegisters *id)
570 {
571     return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, I8MM) != 0;
572 }
573 
574 static inline bool isar_feature_aa64_hbc(const ARMISARegisters *id)
575 {
576     return FIELD_EX64(id->id_aa64isar2, ID_AA64ISAR2, BC) != 0;
577 }
578 
579 static inline bool isar_feature_aa64_mops(const ARMISARegisters *id)
580 {
581     return FIELD_EX64(id->id_aa64isar2, ID_AA64ISAR2, MOPS);
582 }
583 
584 static inline bool isar_feature_aa64_fp_simd(const ARMISARegisters *id)
585 {
586     /* We always set the AdvSIMD and FP fields identically.  */
587     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, FP) != 0xf;
588 }
589 
590 static inline bool isar_feature_aa64_fp16(const ARMISARegisters *id)
591 {
592     /* We always set the AdvSIMD and FP fields identically wrt FP16.  */
593     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, FP) == 1;
594 }
595 
596 static inline bool isar_feature_aa64_aa32(const ARMISARegisters *id)
597 {
598     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, EL0) >= 2;
599 }
600 
601 static inline bool isar_feature_aa64_aa32_el1(const ARMISARegisters *id)
602 {
603     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, EL1) >= 2;
604 }
605 
606 static inline bool isar_feature_aa64_aa32_el2(const ARMISARegisters *id)
607 {
608     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, EL2) >= 2;
609 }
610 
611 static inline bool isar_feature_aa64_ras(const ARMISARegisters *id)
612 {
613     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, RAS) != 0;
614 }
615 
616 static inline bool isar_feature_aa64_doublefault(const ARMISARegisters *id)
617 {
618     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, RAS) >= 2;
619 }
620 
621 static inline bool isar_feature_aa64_sve(const ARMISARegisters *id)
622 {
623     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, SVE) != 0;
624 }
625 
626 static inline bool isar_feature_aa64_sel2(const ARMISARegisters *id)
627 {
628     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, SEL2) != 0;
629 }
630 
631 static inline bool isar_feature_aa64_rme(const ARMISARegisters *id)
632 {
633     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, RME) != 0;
634 }
635 
636 static inline bool isar_feature_aa64_dit(const ARMISARegisters *id)
637 {
638     return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, DIT) != 0;
639 }
640 
641 static inline bool isar_feature_aa64_scxtnum(const ARMISARegisters *id)
642 {
643     int key = FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, CSV2);
644     if (key >= 2) {
645         return true;      /* FEAT_CSV2_2 */
646     }
647     if (key == 1) {
648         key = FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, CSV2_FRAC);
649         return key >= 2;  /* FEAT_CSV2_1p2 */
650     }
651     return false;
652 }
653 
654 static inline bool isar_feature_aa64_ssbs(const ARMISARegisters *id)
655 {
656     return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, SSBS) != 0;
657 }
658 
659 static inline bool isar_feature_aa64_bti(const ARMISARegisters *id)
660 {
661     return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, BT) != 0;
662 }
663 
664 static inline bool isar_feature_aa64_mte_insn_reg(const ARMISARegisters *id)
665 {
666     return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, MTE) != 0;
667 }
668 
669 static inline bool isar_feature_aa64_mte(const ARMISARegisters *id)
670 {
671     return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, MTE) >= 2;
672 }
673 
674 static inline bool isar_feature_aa64_mte3(const ARMISARegisters *id)
675 {
676     return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, MTE) >= 3;
677 }
678 
679 static inline bool isar_feature_aa64_sme(const ARMISARegisters *id)
680 {
681     return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, SME) != 0;
682 }
683 
684 static inline bool isar_feature_aa64_tgran4_lpa2(const ARMISARegisters *id)
685 {
686     return FIELD_SEX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4) >= 1;
687 }
688 
689 static inline bool isar_feature_aa64_tgran4_2_lpa2(const ARMISARegisters *id)
690 {
691     unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4_2);
692     return t >= 3 || (t == 0 && isar_feature_aa64_tgran4_lpa2(id));
693 }
694 
695 static inline bool isar_feature_aa64_tgran16_lpa2(const ARMISARegisters *id)
696 {
697     return FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN16) >= 2;
698 }
699 
700 static inline bool isar_feature_aa64_tgran16_2_lpa2(const ARMISARegisters *id)
701 {
702     unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN16_2);
703     return t >= 3 || (t == 0 && isar_feature_aa64_tgran16_lpa2(id));
704 }
705 
706 static inline bool isar_feature_aa64_tgran4(const ARMISARegisters *id)
707 {
708     return FIELD_SEX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4) >= 0;
709 }
710 
711 static inline bool isar_feature_aa64_tgran16(const ARMISARegisters *id)
712 {
713     return FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN16) >= 1;
714 }
715 
716 static inline bool isar_feature_aa64_tgran64(const ARMISARegisters *id)
717 {
718     return FIELD_SEX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN64) >= 0;
719 }
720 
721 static inline bool isar_feature_aa64_tgran4_2(const ARMISARegisters *id)
722 {
723     unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4_2);
724     return t >= 2 || (t == 0 && isar_feature_aa64_tgran4(id));
725 }
726 
727 static inline bool isar_feature_aa64_tgran16_2(const ARMISARegisters *id)
728 {
729     unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN16_2);
730     return t >= 2 || (t == 0 && isar_feature_aa64_tgran16(id));
731 }
732 
733 static inline bool isar_feature_aa64_tgran64_2(const ARMISARegisters *id)
734 {
735     unsigned t = FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN64_2);
736     return t >= 2 || (t == 0 && isar_feature_aa64_tgran64(id));
737 }
738 
739 static inline bool isar_feature_aa64_fgt(const ARMISARegisters *id)
740 {
741     return FIELD_EX64(id->id_aa64mmfr0, ID_AA64MMFR0, FGT) != 0;
742 }
743 
744 static inline bool isar_feature_aa64_vh(const ARMISARegisters *id)
745 {
746     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, VH) != 0;
747 }
748 
749 static inline bool isar_feature_aa64_lor(const ARMISARegisters *id)
750 {
751     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, LO) != 0;
752 }
753 
754 static inline bool isar_feature_aa64_pan(const ARMISARegisters *id)
755 {
756     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, PAN) != 0;
757 }
758 
759 static inline bool isar_feature_aa64_ats1e1(const ARMISARegisters *id)
760 {
761     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, PAN) >= 2;
762 }
763 
764 static inline bool isar_feature_aa64_pan3(const ARMISARegisters *id)
765 {
766     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, PAN) >= 3;
767 }
768 
769 static inline bool isar_feature_aa64_hcx(const ARMISARegisters *id)
770 {
771     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, HCX) != 0;
772 }
773 
774 static inline bool isar_feature_aa64_tidcp1(const ARMISARegisters *id)
775 {
776     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, TIDCP1) != 0;
777 }
778 
779 static inline bool isar_feature_aa64_hafs(const ARMISARegisters *id)
780 {
781     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, HAFDBS) != 0;
782 }
783 
784 static inline bool isar_feature_aa64_hdbs(const ARMISARegisters *id)
785 {
786     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, HAFDBS) >= 2;
787 }
788 
789 static inline bool isar_feature_aa64_tts2uxn(const ARMISARegisters *id)
790 {
791     return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, XNX) != 0;
792 }
793 
794 static inline bool isar_feature_aa64_uao(const ARMISARegisters *id)
795 {
796     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, UAO) != 0;
797 }
798 
799 static inline bool isar_feature_aa64_st(const ARMISARegisters *id)
800 {
801     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, ST) != 0;
802 }
803 
804 static inline bool isar_feature_aa64_lse2(const ARMISARegisters *id)
805 {
806     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, AT) != 0;
807 }
808 
809 static inline bool isar_feature_aa64_fwb(const ARMISARegisters *id)
810 {
811     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, FWB) != 0;
812 }
813 
814 static inline bool isar_feature_aa64_ids(const ARMISARegisters *id)
815 {
816     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, IDS) != 0;
817 }
818 
819 static inline bool isar_feature_aa64_half_evt(const ARMISARegisters *id)
820 {
821     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, EVT) >= 1;
822 }
823 
824 static inline bool isar_feature_aa64_evt(const ARMISARegisters *id)
825 {
826     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, EVT) >= 2;
827 }
828 
829 static inline bool isar_feature_aa64_ccidx(const ARMISARegisters *id)
830 {
831     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, CCIDX) != 0;
832 }
833 
834 static inline bool isar_feature_aa64_lva(const ARMISARegisters *id)
835 {
836     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, VARANGE) != 0;
837 }
838 
839 static inline bool isar_feature_aa64_e0pd(const ARMISARegisters *id)
840 {
841     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, E0PD) != 0;
842 }
843 
844 static inline bool isar_feature_aa64_nv(const ARMISARegisters *id)
845 {
846     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, NV) != 0;
847 }
848 
849 static inline bool isar_feature_aa64_nv2(const ARMISARegisters *id)
850 {
851     return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, NV) >= 2;
852 }
853 
854 static inline bool isar_feature_aa64_pmuv3p1(const ARMISARegisters *id)
855 {
856     return FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) >= 4 &&
857         FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) != 0xf;
858 }
859 
860 static inline bool isar_feature_aa64_pmuv3p4(const ARMISARegisters *id)
861 {
862     return FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) >= 5 &&
863         FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) != 0xf;
864 }
865 
866 static inline bool isar_feature_aa64_pmuv3p5(const ARMISARegisters *id)
867 {
868     return FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) >= 6 &&
869         FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, PMUVER) != 0xf;
870 }
871 
872 static inline bool isar_feature_aa64_debugv8p2(const ARMISARegisters *id)
873 {
874     return FIELD_EX64(id->id_aa64dfr0, ID_AA64DFR0, DEBUGVER) >= 8;
875 }
876 
877 static inline bool isar_feature_aa64_doublelock(const ARMISARegisters *id)
878 {
879     return FIELD_SEX64(id->id_aa64dfr0, ID_AA64DFR0, DOUBLELOCK) >= 0;
880 }
881 
882 static inline bool isar_feature_aa64_sve2(const ARMISARegisters *id)
883 {
884     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, SVEVER) != 0;
885 }
886 
887 static inline bool isar_feature_aa64_sve2_aes(const ARMISARegisters *id)
888 {
889     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, AES) != 0;
890 }
891 
892 static inline bool isar_feature_aa64_sve2_pmull128(const ARMISARegisters *id)
893 {
894     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, AES) >= 2;
895 }
896 
897 static inline bool isar_feature_aa64_sve2_bitperm(const ARMISARegisters *id)
898 {
899     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, BITPERM) != 0;
900 }
901 
902 static inline bool isar_feature_aa64_sve_bf16(const ARMISARegisters *id)
903 {
904     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, BFLOAT16) != 0;
905 }
906 
907 static inline bool isar_feature_aa64_sve2_sha3(const ARMISARegisters *id)
908 {
909     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, SHA3) != 0;
910 }
911 
912 static inline bool isar_feature_aa64_sve2_sm4(const ARMISARegisters *id)
913 {
914     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, SM4) != 0;
915 }
916 
917 static inline bool isar_feature_aa64_sve_i8mm(const ARMISARegisters *id)
918 {
919     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, I8MM) != 0;
920 }
921 
922 static inline bool isar_feature_aa64_sve_f32mm(const ARMISARegisters *id)
923 {
924     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, F32MM) != 0;
925 }
926 
927 static inline bool isar_feature_aa64_sve_f64mm(const ARMISARegisters *id)
928 {
929     return FIELD_EX64(id->id_aa64zfr0, ID_AA64ZFR0, F64MM) != 0;
930 }
931 
932 static inline bool isar_feature_aa64_sme_f64f64(const ARMISARegisters *id)
933 {
934     return FIELD_EX64(id->id_aa64smfr0, ID_AA64SMFR0, F64F64);
935 }
936 
937 static inline bool isar_feature_aa64_sme_i16i64(const ARMISARegisters *id)
938 {
939     return FIELD_EX64(id->id_aa64smfr0, ID_AA64SMFR0, I16I64) == 0xf;
940 }
941 
942 static inline bool isar_feature_aa64_sme_fa64(const ARMISARegisters *id)
943 {
944     return FIELD_EX64(id->id_aa64smfr0, ID_AA64SMFR0, FA64);
945 }
946 
947 /*
948  * Feature tests for "does this exist in either 32-bit or 64-bit?"
949  */
950 static inline bool isar_feature_any_fp16(const ARMISARegisters *id)
951 {
952     return isar_feature_aa64_fp16(id) || isar_feature_aa32_fp16_arith(id);
953 }
954 
955 static inline bool isar_feature_any_predinv(const ARMISARegisters *id)
956 {
957     return isar_feature_aa64_predinv(id) || isar_feature_aa32_predinv(id);
958 }
959 
960 static inline bool isar_feature_any_pmuv3p1(const ARMISARegisters *id)
961 {
962     return isar_feature_aa64_pmuv3p1(id) || isar_feature_aa32_pmuv3p1(id);
963 }
964 
965 static inline bool isar_feature_any_pmuv3p4(const ARMISARegisters *id)
966 {
967     return isar_feature_aa64_pmuv3p4(id) || isar_feature_aa32_pmuv3p4(id);
968 }
969 
970 static inline bool isar_feature_any_pmuv3p5(const ARMISARegisters *id)
971 {
972     return isar_feature_aa64_pmuv3p5(id) || isar_feature_aa32_pmuv3p5(id);
973 }
974 
975 static inline bool isar_feature_any_ccidx(const ARMISARegisters *id)
976 {
977     return isar_feature_aa64_ccidx(id) || isar_feature_aa32_ccidx(id);
978 }
979 
980 static inline bool isar_feature_any_tts2uxn(const ARMISARegisters *id)
981 {
982     return isar_feature_aa64_tts2uxn(id) || isar_feature_aa32_tts2uxn(id);
983 }
984 
985 static inline bool isar_feature_any_debugv8p2(const ARMISARegisters *id)
986 {
987     return isar_feature_aa64_debugv8p2(id) || isar_feature_aa32_debugv8p2(id);
988 }
989 
990 static inline bool isar_feature_any_ras(const ARMISARegisters *id)
991 {
992     return isar_feature_aa64_ras(id) || isar_feature_aa32_ras(id);
993 }
994 
995 static inline bool isar_feature_any_half_evt(const ARMISARegisters *id)
996 {
997     return isar_feature_aa64_half_evt(id) || isar_feature_aa32_half_evt(id);
998 }
999 
1000 static inline bool isar_feature_any_evt(const ARMISARegisters *id)
1001 {
1002     return isar_feature_aa64_evt(id) || isar_feature_aa32_evt(id);
1003 }
1004 
1005 /*
1006  * Forward to the above feature tests given an ARMCPU pointer.
1007  */
1008 #define cpu_isar_feature(name, cpu) \
1009     ({ ARMCPU *cpu_ = (cpu); isar_feature_##name(&cpu_->isar); })
1010 
1011 #endif
1012