| blob | 59368cb2436a0bf8f90605056a99ba64690b1461 |
1 /*
2 * ARM translation: AArch32 Neon instructions
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2005-2007 CodeSourcery
6 * Copyright (c) 2007 OpenedHand, Ltd.
7 * Copyright (c) 2020 Linaro, Ltd.
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 */
23 /*
24 * This file is intended to be included from translate.c; it uses
25 * some macros and definitions provided by that file.
26 * It might be possible to convert it to a standalone .c file eventually.
27 */
29 static inline int plus1(DisasContext *s, int x)
30 {
31 return x + 1;
32 }
34 static inline int rsub_64(DisasContext *s, int x)
35 {
36 return 64 - x;
37 }
39 static inline int rsub_32(DisasContext *s, int x)
40 {
41 return 32 - x;
42 }
43 static inline int rsub_16(DisasContext *s, int x)
44 {
45 return 16 - x;
46 }
47 static inline int rsub_8(DisasContext *s, int x)
48 {
49 return 8 - x;
50 }
52 static inline int neon_3same_fp_size(DisasContext *s, int x)
53 {
54 /* Convert 0==fp32, 1==fp16 into a MO_* value */
55 return MO_32 - x;
56 }
58 /* Include the generated Neon decoder */
59 #include "decode-neon-dp.c.inc"
60 #include "decode-neon-ls.c.inc"
61 #include "decode-neon-shared.c.inc"
63 static void neon_load_element(TCGv_i32 var, int reg, int ele, MemOp mop)
64 {
65 long offset = neon_element_offset(reg, ele, mop & MO_SIZE);
67 switch (mop) {
68 case MO_UB:
69 tcg_gen_ld8u_i32(var, cpu_env, offset);
70 break;
71 case MO_UW:
72 tcg_gen_ld16u_i32(var, cpu_env, offset);
73 break;
74 case MO_UL:
75 tcg_gen_ld_i32(var, cpu_env, offset);
76 break;
77 default:
78 g_assert_not_reached();
79 }
80 }
82 static void neon_load_element64(TCGv_i64 var, int reg, int ele, MemOp mop)
83 {
84 long offset = neon_element_offset(reg, ele, mop & MO_SIZE);
86 switch (mop) {
87 case MO_UB:
88 tcg_gen_ld8u_i64(var, cpu_env, offset);
89 break;
90 case MO_UW:
91 tcg_gen_ld16u_i64(var, cpu_env, offset);
92 break;
93 case MO_UL:
94 tcg_gen_ld32u_i64(var, cpu_env, offset);
95 break;
96 case MO_Q:
97 tcg_gen_ld_i64(var, cpu_env, offset);
98 break;
99 default:
100 g_assert_not_reached();
101 }
102 }
104 static void neon_store_element(int reg, int ele, MemOp size, TCGv_i32 var)
105 {
106 long offset = neon_element_offset(reg, ele, size);
108 switch (size) {
109 case MO_8:
110 tcg_gen_st8_i32(var, cpu_env, offset);
111 break;
112 case MO_16:
113 tcg_gen_st16_i32(var, cpu_env, offset);
114 break;
115 case MO_32:
116 tcg_gen_st_i32(var, cpu_env, offset);
117 break;
118 default:
119 g_assert_not_reached();
120 }
121 }
123 static void neon_store_element64(int reg, int ele, MemOp size, TCGv_i64 var)
124 {
125 long offset = neon_element_offset(reg, ele, size);
127 switch (size) {
128 case MO_8:
129 tcg_gen_st8_i64(var, cpu_env, offset);
130 break;
131 case MO_16:
132 tcg_gen_st16_i64(var, cpu_env, offset);
133 break;
134 case MO_32:
135 tcg_gen_st32_i64(var, cpu_env, offset);
136 break;
137 case MO_64:
138 tcg_gen_st_i64(var, cpu_env, offset);
139 break;
140 default:
141 g_assert_not_reached();
142 }
143 }
145 static bool trans_VCMLA(DisasContext *s, arg_VCMLA *a)
146 {
147 int opr_sz;
148 TCGv_ptr fpst;
149 gen_helper_gvec_3_ptr *fn_gvec_ptr;
151 if (!dc_isar_feature(aa32_vcma, s)
152 || (a->size == MO_16 && !dc_isar_feature(aa32_fp16_arith, s))) {
153 return false;
154 }
156 /* UNDEF accesses to D16-D31 if they don't exist. */
157 if (!dc_isar_feature(aa32_simd_r32, s) &&
158 ((a->vd | a->vn | a->vm) & 0x10)) {
159 return false;
160 }
162 if ((a->vn | a->vm | a->vd) & a->q) {
163 return false;
164 }
166 if (!vfp_access_check(s)) {
167 return true;
168 }
170 opr_sz = (1 + a->q) * 8;
171 fpst = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
172 fn_gvec_ptr = (a->size == MO_16) ?
173 gen_helper_gvec_fcmlah : gen_helper_gvec_fcmlas;
174 tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
175 vfp_reg_offset(1, a->vn),
176 vfp_reg_offset(1, a->vm),
177 fpst, opr_sz, opr_sz, a->rot,
178 fn_gvec_ptr);
179 tcg_temp_free_ptr(fpst);
180 return true;
181 }
183 static bool trans_VCADD(DisasContext *s, arg_VCADD *a)
184 {
185 int opr_sz;
186 TCGv_ptr fpst;
187 gen_helper_gvec_3_ptr *fn_gvec_ptr;
189 if (!dc_isar_feature(aa32_vcma, s)
190 || (a->size == MO_16 && !dc_isar_feature(aa32_fp16_arith, s))) {
191 return false;
192 }
194 /* UNDEF accesses to D16-D31 if they don't exist. */
195 if (!dc_isar_feature(aa32_simd_r32, s) &&
196 ((a->vd | a->vn | a->vm) & 0x10)) {
197 return false;
198 }
200 if ((a->vn | a->vm | a->vd) & a->q) {
201 return false;
202 }
204 if (!vfp_access_check(s)) {
205 return true;
206 }
208 opr_sz = (1 + a->q) * 8;
209 fpst = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
210 fn_gvec_ptr = (a->size == MO_16) ?
211 gen_helper_gvec_fcaddh : gen_helper_gvec_fcadds;
212 tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
213 vfp_reg_offset(1, a->vn),
214 vfp_reg_offset(1, a->vm),
215 fpst, opr_sz, opr_sz, a->rot,
216 fn_gvec_ptr);
217 tcg_temp_free_ptr(fpst);
218 return true;
219 }
221 static bool trans_VDOT(DisasContext *s, arg_VDOT *a)
222 {
223 int opr_sz;
224 gen_helper_gvec_3 *fn_gvec;
226 if (!dc_isar_feature(aa32_dp, s)) {
227 return false;
228 }
230 /* UNDEF accesses to D16-D31 if they don't exist. */
231 if (!dc_isar_feature(aa32_simd_r32, s) &&
232 ((a->vd | a->vn | a->vm) & 0x10)) {
233 return false;
234 }
236 if ((a->vn | a->vm | a->vd) & a->q) {
237 return false;
238 }
240 if (!vfp_access_check(s)) {
241 return true;
242 }
244 opr_sz = (1 + a->q) * 8;
245 fn_gvec = a->u ? gen_helper_gvec_udot_b : gen_helper_gvec_sdot_b;
246 tcg_gen_gvec_3_ool(vfp_reg_offset(1, a->vd),
247 vfp_reg_offset(1, a->vn),
248 vfp_reg_offset(1, a->vm),
249 opr_sz, opr_sz, 0, fn_gvec);
250 return true;
251 }
253 static bool trans_VFML(DisasContext *s, arg_VFML *a)
254 {
255 int opr_sz;
257 if (!dc_isar_feature(aa32_fhm, s)) {
258 return false;
259 }
261 /* UNDEF accesses to D16-D31 if they don't exist. */
262 if (!dc_isar_feature(aa32_simd_r32, s) &&
263 (a->vd & 0x10)) {
264 return false;
265 }
267 if (a->vd & a->q) {
268 return false;
269 }
271 if (!vfp_access_check(s)) {
272 return true;
273 }
275 opr_sz = (1 + a->q) * 8;
276 tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
277 vfp_reg_offset(a->q, a->vn),
278 vfp_reg_offset(a->q, a->vm),
279 cpu_env, opr_sz, opr_sz, a->s, /* is_2 == 0 */
280 gen_helper_gvec_fmlal_a32);
281 return true;
282 }
284 static bool trans_VCMLA_scalar(DisasContext *s, arg_VCMLA_scalar *a)
285 {
286 gen_helper_gvec_3_ptr *fn_gvec_ptr;
287 int opr_sz;
288 TCGv_ptr fpst;
290 if (!dc_isar_feature(aa32_vcma, s)) {
291 return false;
292 }
293 if (a->size == MO_16 && !dc_isar_feature(aa32_fp16_arith, s)) {
294 return false;
295 }
297 /* UNDEF accesses to D16-D31 if they don't exist. */
298 if (!dc_isar_feature(aa32_simd_r32, s) &&
299 ((a->vd | a->vn | a->vm) & 0x10)) {
300 return false;
301 }
303 if ((a->vd | a->vn) & a->q) {
304 return false;
305 }
307 if (!vfp_access_check(s)) {
308 return true;
309 }
311 fn_gvec_ptr = (a->size == MO_16) ?
312 gen_helper_gvec_fcmlah_idx : gen_helper_gvec_fcmlas_idx;
313 opr_sz = (1 + a->q) * 8;
314 fpst = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
315 tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
316 vfp_reg_offset(1, a->vn),
317 vfp_reg_offset(1, a->vm),
318 fpst, opr_sz, opr_sz,
319 (a->index << 2) | a->rot, fn_gvec_ptr);
320 tcg_temp_free_ptr(fpst);
321 return true;
322 }
324 static bool trans_VDOT_scalar(DisasContext *s, arg_VDOT_scalar *a)
325 {
326 gen_helper_gvec_3 *fn_gvec;
327 int opr_sz;
328 TCGv_ptr fpst;
330 if (!dc_isar_feature(aa32_dp, s)) {
331 return false;
332 }
334 /* UNDEF accesses to D16-D31 if they don't exist. */
335 if (!dc_isar_feature(aa32_simd_r32, s) &&
336 ((a->vd | a->vn) & 0x10)) {
337 return false;
338 }
340 if ((a->vd | a->vn) & a->q) {
341 return false;
342 }
344 if (!vfp_access_check(s)) {
345 return true;
346 }
348 fn_gvec = a->u ? gen_helper_gvec_udot_idx_b : gen_helper_gvec_sdot_idx_b;
349 opr_sz = (1 + a->q) * 8;
350 fpst = fpstatus_ptr(FPST_STD);
351 tcg_gen_gvec_3_ool(vfp_reg_offset(1, a->vd),
352 vfp_reg_offset(1, a->vn),
353 vfp_reg_offset(1, a->rm),
354 opr_sz, opr_sz, a->index, fn_gvec);
355 tcg_temp_free_ptr(fpst);
356 return true;
357 }
359 static bool trans_VFML_scalar(DisasContext *s, arg_VFML_scalar *a)
360 {
361 int opr_sz;
363 if (!dc_isar_feature(aa32_fhm, s)) {
364 return false;
365 }
367 /* UNDEF accesses to D16-D31 if they don't exist. */
368 if (!dc_isar_feature(aa32_simd_r32, s) &&
369 ((a->vd & 0x10) || (a->q && (a->vn & 0x10)))) {
370 return false;
371 }
373 if (a->vd & a->q) {
374 return false;
375 }
377 if (!vfp_access_check(s)) {
378 return true;
379 }
381 opr_sz = (1 + a->q) * 8;
382 tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
383 vfp_reg_offset(a->q, a->vn),
384 vfp_reg_offset(a->q, a->rm),
385 cpu_env, opr_sz, opr_sz,
386 (a->index << 2) | a->s, /* is_2 == 0 */
387 gen_helper_gvec_fmlal_idx_a32);
388 return true;
389 }
391 static struct {
392 int nregs;
393 int interleave;
394 int spacing;
395 } const neon_ls_element_type[11] = {
396 {1, 4, 1},
397 {1, 4, 2},
398 {4, 1, 1},
399 {2, 2, 2},
400 {1, 3, 1},
401 {1, 3, 2},
402 {3, 1, 1},
403 {1, 1, 1},
404 {1, 2, 1},
405 {1, 2, 2},
406 {2, 1, 1}
407 };
409 static void gen_neon_ldst_base_update(DisasContext *s, int rm, int rn,
410 int stride)
411 {
412 if (rm != 15) {
413 TCGv_i32 base;
415 base = load_reg(s, rn);
416 if (rm == 13) {
417 tcg_gen_addi_i32(base, base, stride);
418 } else {
419 TCGv_i32 index;
420 index = load_reg(s, rm);
421 tcg_gen_add_i32(base, base, index);
422 tcg_temp_free_i32(index);
423 }
424 store_reg(s, rn, base);
425 }
426 }
428 static bool trans_VLDST_multiple(DisasContext *s, arg_VLDST_multiple *a)
429 {
430 /* Neon load/store multiple structures */
431 int nregs, interleave, spacing, reg, n;
432 MemOp endian = s->be_data;
433 int mmu_idx = get_mem_index(s);
434 int size = a->size;
435 TCGv_i64 tmp64;
436 TCGv_i32 addr, tmp;
438 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
439 return false;
440 }
442 /* UNDEF accesses to D16-D31 if they don't exist */
443 if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
444 return false;
445 }
446 if (a->itype > 10) {
447 return false;
448 }
449 /* Catch UNDEF cases for bad values of align field */
450 switch (a->itype & 0xc) {
451 case 4:
452 if (a->align >= 2) {
453 return false;
454 }
455 break;
456 case 8:
457 if (a->align == 3) {
458 return false;
459 }
460 break;
461 default:
462 break;
463 }
464 nregs = neon_ls_element_type[a->itype].nregs;
465 interleave = neon_ls_element_type[a->itype].interleave;
466 spacing = neon_ls_element_type[a->itype].spacing;
467 if (size == 3 && (interleave | spacing) != 1) {
468 return false;
469 }
471 if (!vfp_access_check(s)) {
472 return true;
473 }
475 /* For our purposes, bytes are always little-endian. */
476 if (size == 0) {
477 endian = MO_LE;
478 }
479 /*
480 * Consecutive little-endian elements from a single register
481 * can be promoted to a larger little-endian operation.
482 */
483 if (interleave == 1 && endian == MO_LE) {
484 size = 3;
485 }
486 tmp64 = tcg_temp_new_i64();
487 addr = tcg_temp_new_i32();
488 tmp = tcg_const_i32(1 << size);
489 load_reg_var(s, addr, a->rn);
490 for (reg = 0; reg < nregs; reg++) {
491 for (n = 0; n < 8 >> size; n++) {
492 int xs;
493 for (xs = 0; xs < interleave; xs++) {
494 int tt = a->vd + reg + spacing * xs;
496 if (a->l) {
497 gen_aa32_ld_i64(s, tmp64, addr, mmu_idx, endian | size);
498 neon_store_element64(tt, n, size, tmp64);
499 } else {
500 neon_load_element64(tmp64, tt, n, size);
501 gen_aa32_st_i64(s, tmp64, addr, mmu_idx, endian | size);
502 }
503 tcg_gen_add_i32(addr, addr, tmp);
504 }
505 }
506 }
507 tcg_temp_free_i32(addr);
508 tcg_temp_free_i32(tmp);
509 tcg_temp_free_i64(tmp64);
511 gen_neon_ldst_base_update(s, a->rm, a->rn, nregs * interleave * 8);
512 return true;
513 }
515 static bool trans_VLD_all_lanes(DisasContext *s, arg_VLD_all_lanes *a)
516 {
517 /* Neon load single structure to all lanes */
518 int reg, stride, vec_size;
519 int vd = a->vd;
520 int size = a->size;
521 int nregs = a->n + 1;
522 TCGv_i32 addr, tmp;
524 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
525 return false;
526 }
528 /* UNDEF accesses to D16-D31 if they don't exist */
529 if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
530 return false;
531 }
533 if (size == 3) {
534 if (nregs != 4 || a->a == 0) {
535 return false;
536 }
537 /* For VLD4 size == 3 a == 1 means 32 bits at 16 byte alignment */
538 size = 2;
539 }
540 if (nregs == 1 && a->a == 1 && size == 0) {
541 return false;
542 }
543 if (nregs == 3 && a->a == 1) {
544 return false;
545 }
547 if (!vfp_access_check(s)) {
548 return true;
549 }
551 /*
552 * VLD1 to all lanes: T bit indicates how many Dregs to write.
553 * VLD2/3/4 to all lanes: T bit indicates register stride.
554 */
555 stride = a->t ? 2 : 1;
556 vec_size = nregs == 1 ? stride * 8 : 8;
558 tmp = tcg_temp_new_i32();
559 addr = tcg_temp_new_i32();
560 load_reg_var(s, addr, a->rn);
561 for (reg = 0; reg < nregs; reg++) {
562 gen_aa32_ld_i32(s, tmp, addr, get_mem_index(s),
563 s->be_data | size);
564 if ((vd & 1) && vec_size == 16) {
565 /*
566 * We cannot write 16 bytes at once because the
567 * destination is unaligned.
568 */
569 tcg_gen_gvec_dup_i32(size, neon_full_reg_offset(vd),
570 8, 8, tmp);
571 tcg_gen_gvec_mov(0, neon_full_reg_offset(vd + 1),
572 neon_full_reg_offset(vd), 8, 8);
573 } else {
574 tcg_gen_gvec_dup_i32(size, neon_full_reg_offset(vd),
575 vec_size, vec_size, tmp);
576 }
577 tcg_gen_addi_i32(addr, addr, 1 << size);
578 vd += stride;
579 }
580 tcg_temp_free_i32(tmp);
581 tcg_temp_free_i32(addr);
583 gen_neon_ldst_base_update(s, a->rm, a->rn, (1 << size) * nregs);
585 return true;
586 }
588 static bool trans_VLDST_single(DisasContext *s, arg_VLDST_single *a)
589 {
590 /* Neon load/store single structure to one lane */
591 int reg;
592 int nregs = a->n + 1;
593 int vd = a->vd;
594 TCGv_i32 addr, tmp;
596 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
597 return false;
598 }
600 /* UNDEF accesses to D16-D31 if they don't exist */
601 if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
602 return false;
603 }
605 /* Catch the UNDEF cases. This is unavoidably a bit messy. */
606 switch (nregs) {
607 case 1:
608 if (((a->align & (1 << a->size)) != 0) ||
609 (a->size == 2 && ((a->align & 3) == 1 || (a->align & 3) == 2))) {
610 return false;
611 }
612 break;
613 case 3:
614 if ((a->align & 1) != 0) {
615 return false;
616 }
617 /* fall through */
618 case 2:
619 if (a->size == 2 && (a->align & 2) != 0) {
620 return false;
621 }
622 break;
623 case 4:
624 if ((a->size == 2) && ((a->align & 3) == 3)) {
625 return false;
626 }
627 break;
628 default:
629 abort();
630 }
631 if ((vd + a->stride * (nregs - 1)) > 31) {
632 /*
633 * Attempts to write off the end of the register file are
634 * UNPREDICTABLE; we choose to UNDEF because otherwise we would
635 * access off the end of the array that holds the register data.
636 */
637 return false;
638 }
640 if (!vfp_access_check(s)) {
641 return true;
642 }
644 tmp = tcg_temp_new_i32();
645 addr = tcg_temp_new_i32();
646 load_reg_var(s, addr, a->rn);
647 /*
648 * TODO: if we implemented alignment exceptions, we should check
649 * addr against the alignment encoded in a->align here.
650 */
651 for (reg = 0; reg < nregs; reg++) {
652 if (a->l) {
653 gen_aa32_ld_i32(s, tmp, addr, get_mem_index(s),
654 s->be_data | a->size);
655 neon_store_element(vd, a->reg_idx, a->size, tmp);
656 } else { /* Store */
657 neon_load_element(tmp, vd, a->reg_idx, a->size);
658 gen_aa32_st_i32(s, tmp, addr, get_mem_index(s),
659 s->be_data | a->size);
660 }
661 vd += a->stride;
662 tcg_gen_addi_i32(addr, addr, 1 << a->size);
663 }
664 tcg_temp_free_i32(addr);
665 tcg_temp_free_i32(tmp);
667 gen_neon_ldst_base_update(s, a->rm, a->rn, (1 << a->size) * nregs);
669 return true;
670 }
672 static bool do_3same(DisasContext *s, arg_3same *a, GVecGen3Fn fn)
673 {
674 int vec_size = a->q ? 16 : 8;
675 int rd_ofs = neon_full_reg_offset(a->vd);
676 int rn_ofs = neon_full_reg_offset(a->vn);
677 int rm_ofs = neon_full_reg_offset(a->vm);
679 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
680 return false;
681 }
683 /* UNDEF accesses to D16-D31 if they don't exist. */
684 if (!dc_isar_feature(aa32_simd_r32, s) &&
685 ((a->vd | a->vn | a->vm) & 0x10)) {
686 return false;
687 }
689 if ((a->vn | a->vm | a->vd) & a->q) {
690 return false;
691 }
693 if (!vfp_access_check(s)) {
694 return true;
695 }
697 fn(a->size, rd_ofs, rn_ofs, rm_ofs, vec_size, vec_size);
698 return true;
699 }
701 #define DO_3SAME(INSN, FUNC) \
702 static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
703 { \
704 return do_3same(s, a, FUNC); \
705 }
707 DO_3SAME(VADD, tcg_gen_gvec_add)
708 DO_3SAME(VSUB, tcg_gen_gvec_sub)
709 DO_3SAME(VAND, tcg_gen_gvec_and)
710 DO_3SAME(VBIC, tcg_gen_gvec_andc)
711 DO_3SAME(VORR, tcg_gen_gvec_or)
712 DO_3SAME(VORN, tcg_gen_gvec_orc)
713 DO_3SAME(VEOR, tcg_gen_gvec_xor)
714 DO_3SAME(VSHL_S, gen_gvec_sshl)
715 DO_3SAME(VSHL_U, gen_gvec_ushl)
716 DO_3SAME(VQADD_S, gen_gvec_sqadd_qc)
717 DO_3SAME(VQADD_U, gen_gvec_uqadd_qc)
718 DO_3SAME(VQSUB_S, gen_gvec_sqsub_qc)
719 DO_3SAME(VQSUB_U, gen_gvec_uqsub_qc)
721 /* These insns are all gvec_bitsel but with the inputs in various orders. */
722 #define DO_3SAME_BITSEL(INSN, O1, O2, O3) \
723 static void gen_##INSN##_3s(unsigned vece, uint32_t rd_ofs, \
724 uint32_t rn_ofs, uint32_t rm_ofs, \
725 uint32_t oprsz, uint32_t maxsz) \
726 { \
727 tcg_gen_gvec_bitsel(vece, rd_ofs, O1, O2, O3, oprsz, maxsz); \
728 } \
729 DO_3SAME(INSN, gen_##INSN##_3s)
731 DO_3SAME_BITSEL(VBSL, rd_ofs, rn_ofs, rm_ofs)
732 DO_3SAME_BITSEL(VBIT, rm_ofs, rn_ofs, rd_ofs)
733 DO_3SAME_BITSEL(VBIF, rm_ofs, rd_ofs, rn_ofs)
735 #define DO_3SAME_NO_SZ_3(INSN, FUNC) \
736 static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
737 { \
738 if (a->size == 3) { \
739 return false; \
740 } \
741 return do_3same(s, a, FUNC); \
742 }
744 DO_3SAME_NO_SZ_3(VMAX_S, tcg_gen_gvec_smax)
745 DO_3SAME_NO_SZ_3(VMAX_U, tcg_gen_gvec_umax)
746 DO_3SAME_NO_SZ_3(VMIN_S, tcg_gen_gvec_smin)
747 DO_3SAME_NO_SZ_3(VMIN_U, tcg_gen_gvec_umin)
748 DO_3SAME_NO_SZ_3(VMUL, tcg_gen_gvec_mul)
749 DO_3SAME_NO_SZ_3(VMLA, gen_gvec_mla)
750 DO_3SAME_NO_SZ_3(VMLS, gen_gvec_mls)
751 DO_3SAME_NO_SZ_3(VTST, gen_gvec_cmtst)
752 DO_3SAME_NO_SZ_3(VABD_S, gen_gvec_sabd)
753 DO_3SAME_NO_SZ_3(VABA_S, gen_gvec_saba)
754 DO_3SAME_NO_SZ_3(VABD_U, gen_gvec_uabd)
755 DO_3SAME_NO_SZ_3(VABA_U, gen_gvec_uaba)
757 #define DO_3SAME_CMP(INSN, COND) \
758 static void gen_##INSN##_3s(unsigned vece, uint32_t rd_ofs, \
759 uint32_t rn_ofs, uint32_t rm_ofs, \
760 uint32_t oprsz, uint32_t maxsz) \
761 { \
762 tcg_gen_gvec_cmp(COND, vece, rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz); \
763 } \
764 DO_3SAME_NO_SZ_3(INSN, gen_##INSN##_3s)
766 DO_3SAME_CMP(VCGT_S, TCG_COND_GT)
767 DO_3SAME_CMP(VCGT_U, TCG_COND_GTU)
768 DO_3SAME_CMP(VCGE_S, TCG_COND_GE)
769 DO_3SAME_CMP(VCGE_U, TCG_COND_GEU)
770 DO_3SAME_CMP(VCEQ, TCG_COND_EQ)
772 #define WRAP_OOL_FN(WRAPNAME, FUNC) \
773 static void WRAPNAME(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, \
774 uint32_t rm_ofs, uint32_t oprsz, uint32_t maxsz) \
775 { \
776 tcg_gen_gvec_3_ool(rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, 0, FUNC); \
777 }
779 WRAP_OOL_FN(gen_VMUL_p_3s, gen_helper_gvec_pmul_b)
781 static bool trans_VMUL_p_3s(DisasContext *s, arg_3same *a)
782 {
783 if (a->size != 0) {
784 return false;
785 }
786 return do_3same(s, a, gen_VMUL_p_3s);
787 }
789 #define DO_VQRDMLAH(INSN, FUNC) \
790 static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
791 { \
792 if (!dc_isar_feature(aa32_rdm, s)) { \
793 return false; \
794 } \
795 if (a->size != 1 && a->size != 2) { \
796 return false; \
797 } \
798 return do_3same(s, a, FUNC); \
799 }
801 DO_VQRDMLAH(VQRDMLAH, gen_gvec_sqrdmlah_qc)
802 DO_VQRDMLAH(VQRDMLSH, gen_gvec_sqrdmlsh_qc)
804 #define DO_SHA1(NAME, FUNC) \
805 WRAP_OOL_FN(gen_##NAME##_3s, FUNC) \
806 static bool trans_##NAME##_3s(DisasContext *s, arg_3same *a) \
807 { \
808 if (!dc_isar_feature(aa32_sha1, s)) { \
809 return false; \
810 } \
811 return do_3same(s, a, gen_##NAME##_3s); \
812 }
814 DO_SHA1(SHA1C, gen_helper_crypto_sha1c)
815 DO_SHA1(SHA1P, gen_helper_crypto_sha1p)
816 DO_SHA1(SHA1M, gen_helper_crypto_sha1m)
817 DO_SHA1(SHA1SU0, gen_helper_crypto_sha1su0)
819 #define DO_SHA2(NAME, FUNC) \
820 WRAP_OOL_FN(gen_##NAME##_3s, FUNC) \
821 static bool trans_##NAME##_3s(DisasContext *s, arg_3same *a) \
822 { \
823 if (!dc_isar_feature(aa32_sha2, s)) { \
824 return false; \
825 } \
826 return do_3same(s, a, gen_##NAME##_3s); \
827 }
829 DO_SHA2(SHA256H, gen_helper_crypto_sha256h)
830 DO_SHA2(SHA256H2, gen_helper_crypto_sha256h2)
831 DO_SHA2(SHA256SU1, gen_helper_crypto_sha256su1)
833 #define DO_3SAME_64(INSN, FUNC) \
834 static void gen_##INSN##_3s(unsigned vece, uint32_t rd_ofs, \
835 uint32_t rn_ofs, uint32_t rm_ofs, \
836 uint32_t oprsz, uint32_t maxsz) \
837 { \
838 static const GVecGen3 op = { .fni8 = FUNC }; \
839 tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &op); \
840 } \
841 DO_3SAME(INSN, gen_##INSN##_3s)
843 #define DO_3SAME_64_ENV(INSN, FUNC) \
844 static void gen_##INSN##_elt(TCGv_i64 d, TCGv_i64 n, TCGv_i64 m) \
845 { \
846 FUNC(d, cpu_env, n, m); \
847 } \
848 DO_3SAME_64(INSN, gen_##INSN##_elt)
850 DO_3SAME_64(VRSHL_S64, gen_helper_neon_rshl_s64)
851 DO_3SAME_64(VRSHL_U64, gen_helper_neon_rshl_u64)
852 DO_3SAME_64_ENV(VQSHL_S64, gen_helper_neon_qshl_s64)
853 DO_3SAME_64_ENV(VQSHL_U64, gen_helper_neon_qshl_u64)
854 DO_3SAME_64_ENV(VQRSHL_S64, gen_helper_neon_qrshl_s64)
855 DO_3SAME_64_ENV(VQRSHL_U64, gen_helper_neon_qrshl_u64)
857 #define DO_3SAME_32(INSN, FUNC) \
858 static void gen_##INSN##_3s(unsigned vece, uint32_t rd_ofs, \
859 uint32_t rn_ofs, uint32_t rm_ofs, \
860 uint32_t oprsz, uint32_t maxsz) \
861 { \
862 static const GVecGen3 ops[4] = { \
863 { .fni4 = gen_helper_neon_##FUNC##8 }, \
864 { .fni4 = gen_helper_neon_##FUNC##16 }, \
865 { .fni4 = gen_helper_neon_##FUNC##32 }, \
866 { 0 }, \
867 }; \
868 tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops[vece]); \
869 } \
870 static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
871 { \
872 if (a->size > 2) { \
873 return false; \
874 } \
875 return do_3same(s, a, gen_##INSN##_3s); \
876 }
878 /*
879 * Some helper functions need to be passed the cpu_env. In order
880 * to use those with the gvec APIs like tcg_gen_gvec_3() we need
881 * to create wrapper functions whose prototype is a NeonGenTwoOpFn()
882 * and which call a NeonGenTwoOpEnvFn().
883 */
884 #define WRAP_ENV_FN(WRAPNAME, FUNC) \
885 static void WRAPNAME(TCGv_i32 d, TCGv_i32 n, TCGv_i32 m) \
886 { \
887 FUNC(d, cpu_env, n, m); \
888 }
890 #define DO_3SAME_32_ENV(INSN, FUNC) \
891 WRAP_ENV_FN(gen_##INSN##_tramp8, gen_helper_neon_##FUNC##8); \
892 WRAP_ENV_FN(gen_##INSN##_tramp16, gen_helper_neon_##FUNC##16); \
893 WRAP_ENV_FN(gen_##INSN##_tramp32, gen_helper_neon_##FUNC##32); \
894 static void gen_##INSN##_3s(unsigned vece, uint32_t rd_ofs, \
895 uint32_t rn_ofs, uint32_t rm_ofs, \
896 uint32_t oprsz, uint32_t maxsz) \
897 { \
898 static const GVecGen3 ops[4] = { \
899 { .fni4 = gen_##INSN##_tramp8 }, \
900 { .fni4 = gen_##INSN##_tramp16 }, \
901 { .fni4 = gen_##INSN##_tramp32 }, \
902 { 0 }, \
903 }; \
904 tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops[vece]); \
905 } \
906 static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
907 { \
908 if (a->size > 2) { \
909 return false; \
910 } \
911 return do_3same(s, a, gen_##INSN##_3s); \
912 }
914 DO_3SAME_32(VHADD_S, hadd_s)
915 DO_3SAME_32(VHADD_U, hadd_u)
916 DO_3SAME_32(VHSUB_S, hsub_s)
917 DO_3SAME_32(VHSUB_U, hsub_u)
918 DO_3SAME_32(VRHADD_S, rhadd_s)
919 DO_3SAME_32(VRHADD_U, rhadd_u)
920 DO_3SAME_32(VRSHL_S, rshl_s)
921 DO_3SAME_32(VRSHL_U, rshl_u)
923 DO_3SAME_32_ENV(VQSHL_S, qshl_s)
924 DO_3SAME_32_ENV(VQSHL_U, qshl_u)
925 DO_3SAME_32_ENV(VQRSHL_S, qrshl_s)
926 DO_3SAME_32_ENV(VQRSHL_U, qrshl_u)
928 static bool do_3same_pair(DisasContext *s, arg_3same *a, NeonGenTwoOpFn *fn)
929 {
930 /* Operations handled pairwise 32 bits at a time */
931 TCGv_i32 tmp, tmp2, tmp3;
933 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
934 return false;
935 }
937 /* UNDEF accesses to D16-D31 if they don't exist. */
938 if (!dc_isar_feature(aa32_simd_r32, s) &&
939 ((a->vd | a->vn | a->vm) & 0x10)) {
940 return false;
941 }
943 if (a->size == 3) {
944 return false;
945 }
947 if (!vfp_access_check(s)) {
948 return true;
949 }
951 assert(a->q == 0); /* enforced by decode patterns */
953 /*
954 * Note that we have to be careful not to clobber the source operands
955 * in the "vm == vd" case by storing the result of the first pass too
956 * early. Since Q is 0 there are always just two passes, so instead
957 * of a complicated loop over each pass we just unroll.
958 */
959 tmp = tcg_temp_new_i32();
960 tmp2 = tcg_temp_new_i32();
961 tmp3 = tcg_temp_new_i32();
963 read_neon_element32(tmp, a->vn, 0, MO_32);
964 read_neon_element32(tmp2, a->vn, 1, MO_32);
965 fn(tmp, tmp, tmp2);
967 read_neon_element32(tmp3, a->vm, 0, MO_32);
968 read_neon_element32(tmp2, a->vm, 1, MO_32);
969 fn(tmp3, tmp3, tmp2);
971 write_neon_element32(tmp, a->vd, 0, MO_32);
972 write_neon_element32(tmp3, a->vd, 1, MO_32);
974 tcg_temp_free_i32(tmp);
975 tcg_temp_free_i32(tmp2);
976 tcg_temp_free_i32(tmp3);
977 return true;
978 }
980 #define DO_3SAME_PAIR(INSN, func) \
981 static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
982 { \
983 static NeonGenTwoOpFn * const fns[] = { \
984 gen_helper_neon_##func##8, \
985 gen_helper_neon_##func##16, \
986 gen_helper_neon_##func##32, \
987 }; \
988 if (a->size > 2) { \
989 return false; \
990 } \
991 return do_3same_pair(s, a, fns[a->size]); \
992 }
994 /* 32-bit pairwise ops end up the same as the elementwise versions. */
995 #define gen_helper_neon_pmax_s32 tcg_gen_smax_i32
996 #define gen_helper_neon_pmax_u32 tcg_gen_umax_i32
997 #define gen_helper_neon_pmin_s32 tcg_gen_smin_i32
998 #define gen_helper_neon_pmin_u32 tcg_gen_umin_i32
999 #define gen_helper_neon_padd_u32 tcg_gen_add_i32
1001 DO_3SAME_PAIR(VPMAX_S, pmax_s)
1002 DO_3SAME_PAIR(VPMIN_S, pmin_s)
1003 DO_3SAME_PAIR(VPMAX_U, pmax_u)
1004 DO_3SAME_PAIR(VPMIN_U, pmin_u)
1005 DO_3SAME_PAIR(VPADD, padd_u)
1007 #define DO_3SAME_VQDMULH(INSN, FUNC) \
1008 WRAP_ENV_FN(gen_##INSN##_tramp16, gen_helper_neon_##FUNC##_s16); \
1009 WRAP_ENV_FN(gen_##INSN##_tramp32, gen_helper_neon_##FUNC##_s32); \
1010 static void gen_##INSN##_3s(unsigned vece, uint32_t rd_ofs, \
1011 uint32_t rn_ofs, uint32_t rm_ofs, \
1012 uint32_t oprsz, uint32_t maxsz) \
1013 { \
1014 static const GVecGen3 ops[2] = { \
1015 { .fni4 = gen_##INSN##_tramp16 }, \
1016 { .fni4 = gen_##INSN##_tramp32 }, \
1017 }; \
1018 tcg_gen_gvec_3(rd_ofs, rn_ofs, rm_ofs, oprsz, maxsz, &ops[vece - 1]); \
1019 } \
1020 static bool trans_##INSN##_3s(DisasContext *s, arg_3same *a) \
1021 { \
1022 if (a->size != 1 && a->size != 2) { \
1023 return false; \
1024 } \
1025 return do_3same(s, a, gen_##INSN##_3s); \
1026 }
1028 DO_3SAME_VQDMULH(VQDMULH, qdmulh)
1029 DO_3SAME_VQDMULH(VQRDMULH, qrdmulh)
1031 #define WRAP_FP_GVEC(WRAPNAME, FPST, FUNC) \
1032 static void WRAPNAME(unsigned vece, uint32_t rd_ofs, \
1033 uint32_t rn_ofs, uint32_t rm_ofs, \
1034 uint32_t oprsz, uint32_t maxsz) \
1035 { \
1036 TCGv_ptr fpst = fpstatus_ptr(FPST); \
1037 tcg_gen_gvec_3_ptr(rd_ofs, rn_ofs, rm_ofs, fpst, \
1038 oprsz, maxsz, 0, FUNC); \
1039 tcg_temp_free_ptr(fpst); \
1040 }
1042 #define DO_3S_FP_GVEC(INSN,SFUNC,HFUNC) \
1043 WRAP_FP_GVEC(gen_##INSN##_fp32_3s, FPST_STD, SFUNC) \
1044 WRAP_FP_GVEC(gen_##INSN##_fp16_3s, FPST_STD_F16, HFUNC) \
1045 static bool trans_##INSN##_fp_3s(DisasContext *s, arg_3same *a) \
1046 { \
1047 if (a->size == MO_16) { \
1048 if (!dc_isar_feature(aa32_fp16_arith, s)) { \
1049 return false; \
1050 } \
1051 return do_3same(s, a, gen_##INSN##_fp16_3s); \
1052 } \
1053 return do_3same(s, a, gen_##INSN##_fp32_3s); \
1054 }
1057 DO_3S_FP_GVEC(VADD, gen_helper_gvec_fadd_s, gen_helper_gvec_fadd_h)
1058 DO_3S_FP_GVEC(VSUB, gen_helper_gvec_fsub_s, gen_helper_gvec_fsub_h)
1059 DO_3S_FP_GVEC(VABD, gen_helper_gvec_fabd_s, gen_helper_gvec_fabd_h)
1060 DO_3S_FP_GVEC(VMUL, gen_helper_gvec_fmul_s, gen_helper_gvec_fmul_h)
1061 DO_3S_FP_GVEC(VCEQ, gen_helper_gvec_fceq_s, gen_helper_gvec_fceq_h)
1062 DO_3S_FP_GVEC(VCGE, gen_helper_gvec_fcge_s, gen_helper_gvec_fcge_h)
1063 DO_3S_FP_GVEC(VCGT, gen_helper_gvec_fcgt_s, gen_helper_gvec_fcgt_h)
1064 DO_3S_FP_GVEC(VACGE, gen_helper_gvec_facge_s, gen_helper_gvec_facge_h)
1065 DO_3S_FP_GVEC(VACGT, gen_helper_gvec_facgt_s, gen_helper_gvec_facgt_h)
1066 DO_3S_FP_GVEC(VMAX, gen_helper_gvec_fmax_s, gen_helper_gvec_fmax_h)
1067 DO_3S_FP_GVEC(VMIN, gen_helper_gvec_fmin_s, gen_helper_gvec_fmin_h)
1068 DO_3S_FP_GVEC(VMLA, gen_helper_gvec_fmla_s, gen_helper_gvec_fmla_h)
1069 DO_3S_FP_GVEC(VMLS, gen_helper_gvec_fmls_s, gen_helper_gvec_fmls_h)
1070 DO_3S_FP_GVEC(VFMA, gen_helper_gvec_vfma_s, gen_helper_gvec_vfma_h)
1071 DO_3S_FP_GVEC(VFMS, gen_helper_gvec_vfms_s, gen_helper_gvec_vfms_h)
1072 DO_3S_FP_GVEC(VRECPS, gen_helper_gvec_recps_nf_s, gen_helper_gvec_recps_nf_h)
1073 DO_3S_FP_GVEC(VRSQRTS, gen_helper_gvec_rsqrts_nf_s, gen_helper_gvec_rsqrts_nf_h)
1075 WRAP_FP_GVEC(gen_VMAXNM_fp32_3s, FPST_STD, gen_helper_gvec_fmaxnum_s)
1076 WRAP_FP_GVEC(gen_VMAXNM_fp16_3s, FPST_STD_F16, gen_helper_gvec_fmaxnum_h)
1077 WRAP_FP_GVEC(gen_VMINNM_fp32_3s, FPST_STD, gen_helper_gvec_fminnum_s)
1078 WRAP_FP_GVEC(gen_VMINNM_fp16_3s, FPST_STD_F16, gen_helper_gvec_fminnum_h)
1080 static bool trans_VMAXNM_fp_3s(DisasContext *s, arg_3same *a)
1081 {
1082 if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
1083 return false;
1084 }
1086 if (a->size == MO_16) {
1087 if (!dc_isar_feature(aa32_fp16_arith, s)) {
1088 return false;
1089 }
1090 return do_3same(s, a, gen_VMAXNM_fp16_3s);
1091 }
1092 return do_3same(s, a, gen_VMAXNM_fp32_3s);
1093 }
1095 static bool trans_VMINNM_fp_3s(DisasContext *s, arg_3same *a)
1096 {
1097 if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
1098 return false;
1099 }
1101 if (a->size == MO_16) {
1102 if (!dc_isar_feature(aa32_fp16_arith, s)) {
1103 return false;
1104 }
1105 return do_3same(s, a, gen_VMINNM_fp16_3s);
1106 }
1107 return do_3same(s, a, gen_VMINNM_fp32_3s);
1108 }
1110 static bool do_3same_fp_pair(DisasContext *s, arg_3same *a,
1111 gen_helper_gvec_3_ptr *fn)
1112 {
1113 /* FP pairwise operations */
1114 TCGv_ptr fpstatus;
1116 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1117 return false;
1118 }
1120 /* UNDEF accesses to D16-D31 if they don't exist. */
1121 if (!dc_isar_feature(aa32_simd_r32, s) &&
1122 ((a->vd | a->vn | a->vm) & 0x10)) {
1123 return false;
1124 }
1126 if (!vfp_access_check(s)) {
1127 return true;
1128 }
1130 assert(a->q == 0); /* enforced by decode patterns */
1133 fpstatus = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
1134 tcg_gen_gvec_3_ptr(vfp_reg_offset(1, a->vd),
1135 vfp_reg_offset(1, a->vn),
1136 vfp_reg_offset(1, a->vm),
1137 fpstatus, 8, 8, 0, fn);
1138 tcg_temp_free_ptr(fpstatus);
1140 return true;
1141 }
1143 /*
1144 * For all the functions using this macro, size == 1 means fp16,
1145 * which is an architecture extension we don't implement yet.
1146 */
1147 #define DO_3S_FP_PAIR(INSN,FUNC) \
1148 static bool trans_##INSN##_fp_3s(DisasContext *s, arg_3same *a) \
1149 { \
1150 if (a->size == MO_16) { \
1151 if (!dc_isar_feature(aa32_fp16_arith, s)) { \
1152 return false; \
1153 } \
1154 return do_3same_fp_pair(s, a, FUNC##h); \
1155 } \
1156 return do_3same_fp_pair(s, a, FUNC##s); \
1157 }
1159 DO_3S_FP_PAIR(VPADD, gen_helper_neon_padd)
1160 DO_3S_FP_PAIR(VPMAX, gen_helper_neon_pmax)
1161 DO_3S_FP_PAIR(VPMIN, gen_helper_neon_pmin)
1163 static bool do_vector_2sh(DisasContext *s, arg_2reg_shift *a, GVecGen2iFn *fn)
1164 {
1165 /* Handle a 2-reg-shift insn which can be vectorized. */
1166 int vec_size = a->q ? 16 : 8;
1167 int rd_ofs = neon_full_reg_offset(a->vd);
1168 int rm_ofs = neon_full_reg_offset(a->vm);
1170 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1171 return false;
1172 }
1174 /* UNDEF accesses to D16-D31 if they don't exist. */
1175 if (!dc_isar_feature(aa32_simd_r32, s) &&
1176 ((a->vd | a->vm) & 0x10)) {
1177 return false;
1178 }
1180 if ((a->vm | a->vd) & a->q) {
1181 return false;
1182 }
1184 if (!vfp_access_check(s)) {
1185 return true;
1186 }
1188 fn(a->size, rd_ofs, rm_ofs, a->shift, vec_size, vec_size);
1189 return true;
1190 }
1192 #define DO_2SH(INSN, FUNC) \
1193 static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
1194 { \
1195 return do_vector_2sh(s, a, FUNC); \
1196 } \
1198 DO_2SH(VSHL, tcg_gen_gvec_shli)
1199 DO_2SH(VSLI, gen_gvec_sli)
1200 DO_2SH(VSRI, gen_gvec_sri)
1201 DO_2SH(VSRA_S, gen_gvec_ssra)
1202 DO_2SH(VSRA_U, gen_gvec_usra)
1203 DO_2SH(VRSHR_S, gen_gvec_srshr)
1204 DO_2SH(VRSHR_U, gen_gvec_urshr)
1205 DO_2SH(VRSRA_S, gen_gvec_srsra)
1206 DO_2SH(VRSRA_U, gen_gvec_ursra)
1208 static bool trans_VSHR_S_2sh(DisasContext *s, arg_2reg_shift *a)
1209 {
1210 /* Signed shift out of range results in all-sign-bits */
1211 a->shift = MIN(a->shift, (8 << a->size) - 1);
1212 return do_vector_2sh(s, a, tcg_gen_gvec_sari);
1213 }
1215 static void gen_zero_rd_2sh(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs,
1216 int64_t shift, uint32_t oprsz, uint32_t maxsz)
1217 {
1218 tcg_gen_gvec_dup_imm(vece, rd_ofs, oprsz, maxsz, 0);
1219 }
1221 static bool trans_VSHR_U_2sh(DisasContext *s, arg_2reg_shift *a)
1222 {
1223 /* Shift out of range is architecturally valid and results in zero. */
1224 if (a->shift >= (8 << a->size)) {
1225 return do_vector_2sh(s, a, gen_zero_rd_2sh);
1226 } else {
1227 return do_vector_2sh(s, a, tcg_gen_gvec_shri);
1228 }
1229 }
1231 static bool do_2shift_env_64(DisasContext *s, arg_2reg_shift *a,
1232 NeonGenTwo64OpEnvFn *fn)
1233 {
1234 /*
1235 * 2-reg-and-shift operations, size == 3 case, where the
1236 * function needs to be passed cpu_env.
1237 */
1238 TCGv_i64 constimm;
1239 int pass;
1241 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1242 return false;
1243 }
1245 /* UNDEF accesses to D16-D31 if they don't exist. */
1246 if (!dc_isar_feature(aa32_simd_r32, s) &&
1247 ((a->vd | a->vm) & 0x10)) {
1248 return false;
1249 }
1251 if ((a->vm | a->vd) & a->q) {
1252 return false;
1253 }
1255 if (!vfp_access_check(s)) {
1256 return true;
1257 }
1259 /*
1260 * To avoid excessive duplication of ops we implement shift
1261 * by immediate using the variable shift operations.
1262 */
1263 constimm = tcg_const_i64(dup_const(a->size, a->shift));
1265 for (pass = 0; pass < a->q + 1; pass++) {
1266 TCGv_i64 tmp = tcg_temp_new_i64();
1268 read_neon_element64(tmp, a->vm, pass, MO_64);
1269 fn(tmp, cpu_env, tmp, constimm);
1270 write_neon_element64(tmp, a->vd, pass, MO_64);
1271 tcg_temp_free_i64(tmp);
1272 }
1273 tcg_temp_free_i64(constimm);
1274 return true;
1275 }
1277 static bool do_2shift_env_32(DisasContext *s, arg_2reg_shift *a,
1278 NeonGenTwoOpEnvFn *fn)
1279 {
1280 /*
1281 * 2-reg-and-shift operations, size < 3 case, where the
1282 * helper needs to be passed cpu_env.
1283 */
1284 TCGv_i32 constimm, tmp;
1285 int pass;
1287 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1288 return false;
1289 }
1291 /* UNDEF accesses to D16-D31 if they don't exist. */
1292 if (!dc_isar_feature(aa32_simd_r32, s) &&
1293 ((a->vd | a->vm) & 0x10)) {
1294 return false;
1295 }
1297 if ((a->vm | a->vd) & a->q) {
1298 return false;
1299 }
1301 if (!vfp_access_check(s)) {
1302 return true;
1303 }
1305 /*
1306 * To avoid excessive duplication of ops we implement shift
1307 * by immediate using the variable shift operations.
1308 */
1309 constimm = tcg_const_i32(dup_const(a->size, a->shift));
1310 tmp = tcg_temp_new_i32();
1312 for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
1313 read_neon_element32(tmp, a->vm, pass, MO_32);
1314 fn(tmp, cpu_env, tmp, constimm);
1315 write_neon_element32(tmp, a->vd, pass, MO_32);
1316 }
1317 tcg_temp_free_i32(tmp);
1318 tcg_temp_free_i32(constimm);
1319 return true;
1320 }
1322 #define DO_2SHIFT_ENV(INSN, FUNC) \
1323 static bool trans_##INSN##_64_2sh(DisasContext *s, arg_2reg_shift *a) \
1324 { \
1325 return do_2shift_env_64(s, a, gen_helper_neon_##FUNC##64); \
1326 } \
1327 static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
1328 { \
1329 static NeonGenTwoOpEnvFn * const fns[] = { \
1330 gen_helper_neon_##FUNC##8, \
1331 gen_helper_neon_##FUNC##16, \
1332 gen_helper_neon_##FUNC##32, \
1333 }; \
1334 assert(a->size < ARRAY_SIZE(fns)); \
1335 return do_2shift_env_32(s, a, fns[a->size]); \
1336 }
1338 DO_2SHIFT_ENV(VQSHLU, qshlu_s)
1339 DO_2SHIFT_ENV(VQSHL_U, qshl_u)
1340 DO_2SHIFT_ENV(VQSHL_S, qshl_s)
1342 static bool do_2shift_narrow_64(DisasContext *s, arg_2reg_shift *a,
1343 NeonGenTwo64OpFn *shiftfn,
1344 NeonGenNarrowEnvFn *narrowfn)
1345 {
1346 /* 2-reg-and-shift narrowing-shift operations, size == 3 case */
1347 TCGv_i64 constimm, rm1, rm2;
1348 TCGv_i32 rd;
1350 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1351 return false;
1352 }
1354 /* UNDEF accesses to D16-D31 if they don't exist. */
1355 if (!dc_isar_feature(aa32_simd_r32, s) &&
1356 ((a->vd | a->vm) & 0x10)) {
1357 return false;
1358 }
1360 if (a->vm & 1) {
1361 return false;
1362 }
1364 if (!vfp_access_check(s)) {
1365 return true;
1366 }
1368 /*
1369 * This is always a right shift, and the shiftfn is always a
1370 * left-shift helper, which thus needs the negated shift count.
1371 */
1372 constimm = tcg_const_i64(-a->shift);
1373 rm1 = tcg_temp_new_i64();
1374 rm2 = tcg_temp_new_i64();
1375 rd = tcg_temp_new_i32();
1377 /* Load both inputs first to avoid potential overwrite if rm == rd */
1378 read_neon_element64(rm1, a->vm, 0, MO_64);
1379 read_neon_element64(rm2, a->vm, 1, MO_64);
1381 shiftfn(rm1, rm1, constimm);
1382 narrowfn(rd, cpu_env, rm1);
1383 write_neon_element32(rd, a->vd, 0, MO_32);
1385 shiftfn(rm2, rm2, constimm);
1386 narrowfn(rd, cpu_env, rm2);
1387 write_neon_element32(rd, a->vd, 1, MO_32);
1389 tcg_temp_free_i32(rd);
1390 tcg_temp_free_i64(rm1);
1391 tcg_temp_free_i64(rm2);
1392 tcg_temp_free_i64(constimm);
1394 return true;
1395 }
1397 static bool do_2shift_narrow_32(DisasContext *s, arg_2reg_shift *a,
1398 NeonGenTwoOpFn *shiftfn,
1399 NeonGenNarrowEnvFn *narrowfn)
1400 {
1401 /* 2-reg-and-shift narrowing-shift operations, size < 3 case */
1402 TCGv_i32 constimm, rm1, rm2, rm3, rm4;
1403 TCGv_i64 rtmp;
1404 uint32_t imm;
1406 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1407 return false;
1408 }
1410 /* UNDEF accesses to D16-D31 if they don't exist. */
1411 if (!dc_isar_feature(aa32_simd_r32, s) &&
1412 ((a->vd | a->vm) & 0x10)) {
1413 return false;
1414 }
1416 if (a->vm & 1) {
1417 return false;
1418 }
1420 if (!vfp_access_check(s)) {
1421 return true;
1422 }
1424 /*
1425 * This is always a right shift, and the shiftfn is always a
1426 * left-shift helper, which thus needs the negated shift count
1427 * duplicated into each lane of the immediate value.
1428 */
1429 if (a->size == 1) {
1430 imm = (uint16_t)(-a->shift);
1431 imm |= imm << 16;
1432 } else {
1433 /* size == 2 */
1434 imm = -a->shift;
1435 }
1436 constimm = tcg_const_i32(imm);
1438 /* Load all inputs first to avoid potential overwrite */
1439 rm1 = tcg_temp_new_i32();
1440 rm2 = tcg_temp_new_i32();
1441 rm3 = tcg_temp_new_i32();
1442 rm4 = tcg_temp_new_i32();
1443 read_neon_element32(rm1, a->vm, 0, MO_32);
1444 read_neon_element32(rm2, a->vm, 1, MO_32);
1445 read_neon_element32(rm3, a->vm, 2, MO_32);
1446 read_neon_element32(rm4, a->vm, 3, MO_32);
1447 rtmp = tcg_temp_new_i64();
1449 shiftfn(rm1, rm1, constimm);
1450 shiftfn(rm2, rm2, constimm);
1452 tcg_gen_concat_i32_i64(rtmp, rm1, rm2);
1453 tcg_temp_free_i32(rm2);
1455 narrowfn(rm1, cpu_env, rtmp);
1456 write_neon_element32(rm1, a->vd, 0, MO_32);
1457 tcg_temp_free_i32(rm1);
1459 shiftfn(rm3, rm3, constimm);
1460 shiftfn(rm4, rm4, constimm);
1461 tcg_temp_free_i32(constimm);
1463 tcg_gen_concat_i32_i64(rtmp, rm3, rm4);
1464 tcg_temp_free_i32(rm4);
1466 narrowfn(rm3, cpu_env, rtmp);
1467 tcg_temp_free_i64(rtmp);
1468 write_neon_element32(rm3, a->vd, 1, MO_32);
1469 tcg_temp_free_i32(rm3);
1470 return true;
1471 }
1473 #define DO_2SN_64(INSN, FUNC, NARROWFUNC) \
1474 static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
1475 { \
1476 return do_2shift_narrow_64(s, a, FUNC, NARROWFUNC); \
1477 }
1478 #define DO_2SN_32(INSN, FUNC, NARROWFUNC) \
1479 static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
1480 { \
1481 return do_2shift_narrow_32(s, a, FUNC, NARROWFUNC); \
1482 }
1484 static void gen_neon_narrow_u32(TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
1485 {
1486 tcg_gen_extrl_i64_i32(dest, src);
1487 }
1489 static void gen_neon_narrow_u16(TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
1490 {
1491 gen_helper_neon_narrow_u16(dest, src);
1492 }
1494 static void gen_neon_narrow_u8(TCGv_i32 dest, TCGv_ptr env, TCGv_i64 src)
1495 {
1496 gen_helper_neon_narrow_u8(dest, src);
1497 }
1499 DO_2SN_64(VSHRN_64, gen_ushl_i64, gen_neon_narrow_u32)
1500 DO_2SN_32(VSHRN_32, gen_ushl_i32, gen_neon_narrow_u16)
1501 DO_2SN_32(VSHRN_16, gen_helper_neon_shl_u16, gen_neon_narrow_u8)
1503 DO_2SN_64(VRSHRN_64, gen_helper_neon_rshl_u64, gen_neon_narrow_u32)
1504 DO_2SN_32(VRSHRN_32, gen_helper_neon_rshl_u32, gen_neon_narrow_u16)
1505 DO_2SN_32(VRSHRN_16, gen_helper_neon_rshl_u16, gen_neon_narrow_u8)
1507 DO_2SN_64(VQSHRUN_64, gen_sshl_i64, gen_helper_neon_unarrow_sat32)
1508 DO_2SN_32(VQSHRUN_32, gen_sshl_i32, gen_helper_neon_unarrow_sat16)
1509 DO_2SN_32(VQSHRUN_16, gen_helper_neon_shl_s16, gen_helper_neon_unarrow_sat8)
1511 DO_2SN_64(VQRSHRUN_64, gen_helper_neon_rshl_s64, gen_helper_neon_unarrow_sat32)
1512 DO_2SN_32(VQRSHRUN_32, gen_helper_neon_rshl_s32, gen_helper_neon_unarrow_sat16)
1513 DO_2SN_32(VQRSHRUN_16, gen_helper_neon_rshl_s16, gen_helper_neon_unarrow_sat8)
1514 DO_2SN_64(VQSHRN_S64, gen_sshl_i64, gen_helper_neon_narrow_sat_s32)
1515 DO_2SN_32(VQSHRN_S32, gen_sshl_i32, gen_helper_neon_narrow_sat_s16)
1516 DO_2SN_32(VQSHRN_S16, gen_helper_neon_shl_s16, gen_helper_neon_narrow_sat_s8)
1518 DO_2SN_64(VQRSHRN_S64, gen_helper_neon_rshl_s64, gen_helper_neon_narrow_sat_s32)
1519 DO_2SN_32(VQRSHRN_S32, gen_helper_neon_rshl_s32, gen_helper_neon_narrow_sat_s16)
1520 DO_2SN_32(VQRSHRN_S16, gen_helper_neon_rshl_s16, gen_helper_neon_narrow_sat_s8)
1522 DO_2SN_64(VQSHRN_U64, gen_ushl_i64, gen_helper_neon_narrow_sat_u32)
1523 DO_2SN_32(VQSHRN_U32, gen_ushl_i32, gen_helper_neon_narrow_sat_u16)
1524 DO_2SN_32(VQSHRN_U16, gen_helper_neon_shl_u16, gen_helper_neon_narrow_sat_u8)
1526 DO_2SN_64(VQRSHRN_U64, gen_helper_neon_rshl_u64, gen_helper_neon_narrow_sat_u32)
1527 DO_2SN_32(VQRSHRN_U32, gen_helper_neon_rshl_u32, gen_helper_neon_narrow_sat_u16)
1528 DO_2SN_32(VQRSHRN_U16, gen_helper_neon_rshl_u16, gen_helper_neon_narrow_sat_u8)
1530 static bool do_vshll_2sh(DisasContext *s, arg_2reg_shift *a,
1531 NeonGenWidenFn *widenfn, bool u)
1532 {
1533 TCGv_i64 tmp;
1534 TCGv_i32 rm0, rm1;
1535 uint64_t widen_mask = 0;
1537 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1538 return false;
1539 }
1541 /* UNDEF accesses to D16-D31 if they don't exist. */
1542 if (!dc_isar_feature(aa32_simd_r32, s) &&
1543 ((a->vd | a->vm) & 0x10)) {
1544 return false;
1545 }
1547 if (a->vd & 1) {
1548 return false;
1549 }
1551 if (!vfp_access_check(s)) {
1552 return true;
1553 }
1555 /*
1556 * This is a widen-and-shift operation. The shift is always less
1557 * than the width of the source type, so after widening the input
1558 * vector we can simply shift the whole 64-bit widened register,
1559 * and then clear the potential overflow bits resulting from left
1560 * bits of the narrow input appearing as right bits of the left
1561 * neighbour narrow input. Calculate a mask of bits to clear.
1562 */
1563 if ((a->shift != 0) && (a->size < 2 || u)) {
1564 int esize = 8 << a->size;
1565 widen_mask = MAKE_64BIT_MASK(0, esize);
1566 widen_mask >>= esize - a->shift;
1567 widen_mask = dup_const(a->size + 1, widen_mask);
1568 }
1570 rm0 = tcg_temp_new_i32();
1571 rm1 = tcg_temp_new_i32();
1572 read_neon_element32(rm0, a->vm, 0, MO_32);
1573 read_neon_element32(rm1, a->vm, 1, MO_32);
1574 tmp = tcg_temp_new_i64();
1576 widenfn(tmp, rm0);
1577 tcg_temp_free_i32(rm0);
1578 if (a->shift != 0) {
1579 tcg_gen_shli_i64(tmp, tmp, a->shift);
1580 tcg_gen_andi_i64(tmp, tmp, ~widen_mask);
1581 }
1582 write_neon_element64(tmp, a->vd, 0, MO_64);
1584 widenfn(tmp, rm1);
1585 tcg_temp_free_i32(rm1);
1586 if (a->shift != 0) {
1587 tcg_gen_shli_i64(tmp, tmp, a->shift);
1588 tcg_gen_andi_i64(tmp, tmp, ~widen_mask);
1589 }
1590 write_neon_element64(tmp, a->vd, 1, MO_64);
1591 tcg_temp_free_i64(tmp);
1592 return true;
1593 }
1595 static bool trans_VSHLL_S_2sh(DisasContext *s, arg_2reg_shift *a)
1596 {
1597 static NeonGenWidenFn * const widenfn[] = {
1598 gen_helper_neon_widen_s8,
1599 gen_helper_neon_widen_s16,
1600 tcg_gen_ext_i32_i64,
1601 };
1602 return do_vshll_2sh(s, a, widenfn[a->size], false);
1603 }
1605 static bool trans_VSHLL_U_2sh(DisasContext *s, arg_2reg_shift *a)
1606 {
1607 static NeonGenWidenFn * const widenfn[] = {
1608 gen_helper_neon_widen_u8,
1609 gen_helper_neon_widen_u16,
1610 tcg_gen_extu_i32_i64,
1611 };
1612 return do_vshll_2sh(s, a, widenfn[a->size], true);
1613 }
1615 static bool do_fp_2sh(DisasContext *s, arg_2reg_shift *a,
1616 gen_helper_gvec_2_ptr *fn)
1617 {
1618 /* FP operations in 2-reg-and-shift group */
1619 int vec_size = a->q ? 16 : 8;
1620 int rd_ofs = neon_full_reg_offset(a->vd);
1621 int rm_ofs = neon_full_reg_offset(a->vm);
1622 TCGv_ptr fpst;
1624 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1625 return false;
1626 }
1628 if (a->size == MO_16) {
1629 if (!dc_isar_feature(aa32_fp16_arith, s)) {
1630 return false;
1631 }
1632 }
1634 /* UNDEF accesses to D16-D31 if they don't exist. */
1635 if (!dc_isar_feature(aa32_simd_r32, s) &&
1636 ((a->vd | a->vm) & 0x10)) {
1637 return false;
1638 }
1640 if ((a->vm | a->vd) & a->q) {
1641 return false;
1642 }
1644 if (!vfp_access_check(s)) {
1645 return true;
1646 }
1648 fpst = fpstatus_ptr(a->size == MO_16 ? FPST_STD_F16 : FPST_STD);
1649 tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, vec_size, vec_size, a->shift, fn);
1650 tcg_temp_free_ptr(fpst);
1651 return true;
1652 }
1654 #define DO_FP_2SH(INSN, FUNC) \
1655 static bool trans_##INSN##_2sh(DisasContext *s, arg_2reg_shift *a) \
1656 { \
1657 return do_fp_2sh(s, a, FUNC); \
1658 }
1660 DO_FP_2SH(VCVT_SF, gen_helper_gvec_vcvt_sf)
1661 DO_FP_2SH(VCVT_UF, gen_helper_gvec_vcvt_uf)
1662 DO_FP_2SH(VCVT_FS, gen_helper_gvec_vcvt_fs)
1663 DO_FP_2SH(VCVT_FU, gen_helper_gvec_vcvt_fu)
1665 DO_FP_2SH(VCVT_SH, gen_helper_gvec_vcvt_sh)
1666 DO_FP_2SH(VCVT_UH, gen_helper_gvec_vcvt_uh)
1667 DO_FP_2SH(VCVT_HS, gen_helper_gvec_vcvt_hs)
1668 DO_FP_2SH(VCVT_HU, gen_helper_gvec_vcvt_hu)
1670 static uint64_t asimd_imm_const(uint32_t imm, int cmode, int op)
1671 {
1672 /*
1673 * Expand the encoded constant.
1674 * Note that cmode = 2,3,4,5,6,7,10,11,12,13 imm=0 is UNPREDICTABLE.
1675 * We choose to not special-case this and will behave as if a
1676 * valid constant encoding of 0 had been given.
1677 * cmode = 15 op = 1 must UNDEF; we assume decode has handled that.
1678 */
1679 switch (cmode) {
1680 case 0: case 1:
1681 /* no-op */
1682 break;
1683 case 2: case 3:
1684 imm <<= 8;
1685 break;
1686 case 4: case 5:
1687 imm <<= 16;
1688 break;
1689 case 6: case 7:
1690 imm <<= 24;
1691 break;
1692 case 8: case 9:
1693 imm |= imm << 16;
1694 break;
1695 case 10: case 11:
1696 imm = (imm << 8) | (imm << 24);
1697 break;
1698 case 12:
1699 imm = (imm << 8) | 0xff;
1700 break;
1701 case 13:
1702 imm = (imm << 16) | 0xffff;
1703 break;
1704 case 14:
1705 if (op) {
1706 /*
1707 * This is the only case where the top and bottom 32 bits
1708 * of the encoded constant differ.
1709 */
1710 uint64_t imm64 = 0;
1711 int n;
1713 for (n = 0; n < 8; n++) {
1714 if (imm & (1 << n)) {
1715 imm64 |= (0xffULL << (n * 8));
1716 }
1717 }
1718 return imm64;
1719 }
1720 imm |= (imm << 8) | (imm << 16) | (imm << 24);
1721 break;
1722 case 15:
1723 imm = ((imm & 0x80) << 24) | ((imm & 0x3f) << 19)
1724 | ((imm & 0x40) ? (0x1f << 25) : (1 << 30));
1725 break;
1726 }
1727 if (op) {
1728 imm = ~imm;
1729 }
1730 return dup_const(MO_32, imm);
1731 }
1733 static bool do_1reg_imm(DisasContext *s, arg_1reg_imm *a,
1734 GVecGen2iFn *fn)
1735 {
1736 uint64_t imm;
1737 int reg_ofs, vec_size;
1739 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1740 return false;
1741 }
1743 /* UNDEF accesses to D16-D31 if they don't exist. */
1744 if (!dc_isar_feature(aa32_simd_r32, s) && (a->vd & 0x10)) {
1745 return false;
1746 }
1748 if (a->vd & a->q) {
1749 return false;
1750 }
1752 if (!vfp_access_check(s)) {
1753 return true;
1754 }
1756 reg_ofs = neon_full_reg_offset(a->vd);
1757 vec_size = a->q ? 16 : 8;
1758 imm = asimd_imm_const(a->imm, a->cmode, a->op);
1760 fn(MO_64, reg_ofs, reg_ofs, imm, vec_size, vec_size);
1761 return true;
1762 }
1764 static void gen_VMOV_1r(unsigned vece, uint32_t dofs, uint32_t aofs,
1765 int64_t c, uint32_t oprsz, uint32_t maxsz)
1766 {
1767 tcg_gen_gvec_dup_imm(MO_64, dofs, oprsz, maxsz, c);
1768 }
1770 static bool trans_Vimm_1r(DisasContext *s, arg_1reg_imm *a)
1771 {
1772 /* Handle decode of cmode/op here between VORR/VBIC/VMOV */
1773 GVecGen2iFn *fn;
1775 if ((a->cmode & 1) && a->cmode < 12) {
1776 /* for op=1, the imm will be inverted, so BIC becomes AND. */
1777 fn = a->op ? tcg_gen_gvec_andi : tcg_gen_gvec_ori;
1778 } else {
1779 /* There is one unallocated cmode/op combination in this space */
1780 if (a->cmode == 15 && a->op == 1) {
1781 return false;
1782 }
1783 fn = gen_VMOV_1r;
1784 }
1785 return do_1reg_imm(s, a, fn);
1786 }
1788 static bool do_prewiden_3d(DisasContext *s, arg_3diff *a,
1789 NeonGenWidenFn *widenfn,
1790 NeonGenTwo64OpFn *opfn,
1791 int src1_mop, int src2_mop)
1792 {
1793 /* 3-regs different lengths, prewidening case (VADDL/VSUBL/VAADW/VSUBW) */
1794 TCGv_i64 rn0_64, rn1_64, rm_64;
1796 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1797 return false;
1798 }
1800 /* UNDEF accesses to D16-D31 if they don't exist. */
1801 if (!dc_isar_feature(aa32_simd_r32, s) &&
1802 ((a->vd | a->vn | a->vm) & 0x10)) {
1803 return false;
1804 }
1806 if (!opfn) {
1807 /* size == 3 case, which is an entirely different insn group */
1808 return false;
1809 }
1811 if ((a->vd & 1) || (src1_mop == MO_Q && (a->vn & 1))) {
1812 return false;
1813 }
1815 if (!vfp_access_check(s)) {
1816 return true;
1817 }
1819 rn0_64 = tcg_temp_new_i64();
1820 rn1_64 = tcg_temp_new_i64();
1821 rm_64 = tcg_temp_new_i64();
1823 if (src1_mop >= 0) {
1824 read_neon_element64(rn0_64, a->vn, 0, src1_mop);
1825 } else {
1826 TCGv_i32 tmp = tcg_temp_new_i32();
1827 read_neon_element32(tmp, a->vn, 0, MO_32);
1828 widenfn(rn0_64, tmp);
1829 tcg_temp_free_i32(tmp);
1830 }
1831 if (src2_mop >= 0) {
1832 read_neon_element64(rm_64, a->vm, 0, src2_mop);
1833 } else {
1834 TCGv_i32 tmp = tcg_temp_new_i32();
1835 read_neon_element32(tmp, a->vm, 0, MO_32);
1836 widenfn(rm_64, tmp);
1837 tcg_temp_free_i32(tmp);
1838 }
1840 opfn(rn0_64, rn0_64, rm_64);
1842 /*
1843 * Load second pass inputs before storing the first pass result, to
1844 * avoid incorrect results if a narrow input overlaps with the result.
1845 */
1846 if (src1_mop >= 0) {
1847 read_neon_element64(rn1_64, a->vn, 1, src1_mop);
1848 } else {
1849 TCGv_i32 tmp = tcg_temp_new_i32();
1850 read_neon_element32(tmp, a->vn, 1, MO_32);
1851 widenfn(rn1_64, tmp);
1852 tcg_temp_free_i32(tmp);
1853 }
1854 if (src2_mop >= 0) {
1855 read_neon_element64(rm_64, a->vm, 1, src2_mop);
1856 } else {
1857 TCGv_i32 tmp = tcg_temp_new_i32();
1858 read_neon_element32(tmp, a->vm, 1, MO_32);
1859 widenfn(rm_64, tmp);
1860 tcg_temp_free_i32(tmp);
1861 }
1863 write_neon_element64(rn0_64, a->vd, 0, MO_64);
1865 opfn(rn1_64, rn1_64, rm_64);
1866 write_neon_element64(rn1_64, a->vd, 1, MO_64);
1868 tcg_temp_free_i64(rn0_64);
1869 tcg_temp_free_i64(rn1_64);
1870 tcg_temp_free_i64(rm_64);
1872 return true;
1873 }
1875 #define DO_PREWIDEN(INSN, S, OP, SRC1WIDE, SIGN) \
1876 static bool trans_##INSN##_3d(DisasContext *s, arg_3diff *a) \
1877 { \
1878 static NeonGenWidenFn * const widenfn[] = { \
1879 gen_helper_neon_widen_##S##8, \
1880 gen_helper_neon_widen_##S##16, \
1881 NULL, NULL, \
1882 }; \
1883 static NeonGenTwo64OpFn * const addfn[] = { \
1884 gen_helper_neon_##OP##l_u16, \
1885 gen_helper_neon_##OP##l_u32, \
1886 tcg_gen_##OP##_i64, \
1887 NULL, \
1888 }; \
1889 int narrow_mop = a->size == MO_32 ? MO_32 | SIGN : -1; \
1890 return do_prewiden_3d(s, a, widenfn[a->size], addfn[a->size], \
1891 SRC1WIDE ? MO_Q : narrow_mop, \
1892 narrow_mop); \
1893 }
1895 DO_PREWIDEN(VADDL_S, s, add, false, MO_SIGN)
1896 DO_PREWIDEN(VADDL_U, u, add, false, 0)
1897 DO_PREWIDEN(VSUBL_S, s, sub, false, MO_SIGN)
1898 DO_PREWIDEN(VSUBL_U, u, sub, false, 0)
1899 DO_PREWIDEN(VADDW_S, s, add, true, MO_SIGN)
1900 DO_PREWIDEN(VADDW_U, u, add, true, 0)
1901 DO_PREWIDEN(VSUBW_S, s, sub, true, MO_SIGN)
1902 DO_PREWIDEN(VSUBW_U, u, sub, true, 0)
1904 static bool do_narrow_3d(DisasContext *s, arg_3diff *a,
1905 NeonGenTwo64OpFn *opfn, NeonGenNarrowFn *narrowfn)
1906 {
1907 /* 3-regs different lengths, narrowing (VADDHN/VSUBHN/VRADDHN/VRSUBHN) */
1908 TCGv_i64 rn_64, rm_64;
1909 TCGv_i32 rd0, rd1;
1911 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
1912 return false;
1913 }
1915 /* UNDEF accesses to D16-D31 if they don't exist. */
1916 if (!dc_isar_feature(aa32_simd_r32, s) &&
1917 ((a->vd | a->vn | a->vm) & 0x10)) {
1918 return false;
1919 }
1921 if (!opfn || !narrowfn) {
1922 /* size == 3 case, which is an entirely different insn group */
1923 return false;
1924 }
1926 if ((a->vn | a->vm) & 1) {
1927 return false;
1928 }
1930 if (!vfp_access_check(s)) {
1931 return true;
1932 }
1934 rn_64 = tcg_temp_new_i64();
1935 rm_64 = tcg_temp_new_i64();
1936 rd0 = tcg_temp_new_i32();
1937 rd1 = tcg_temp_new_i32();
1939 read_neon_element64(rn_64, a->vn, 0, MO_64);
1940 read_neon_element64(rm_64, a->vm, 0, MO_64);
1942 opfn(rn_64, rn_64, rm_64);
1944 narrowfn(rd0, rn_64);
1946 read_neon_element64(rn_64, a->vn, 1, MO_64);
1947 read_neon_element64(rm_64, a->vm, 1, MO_64);
1949 opfn(rn_64, rn_64, rm_64);
1951 narrowfn(rd1, rn_64);
1953 write_neon_element32(rd0, a->vd, 0, MO_32);
1954 write_neon_element32(rd1, a->vd, 1, MO_32);
1956 tcg_temp_free_i32(rd0);
1957 tcg_temp_free_i32(rd1);
1958 tcg_temp_free_i64(rn_64);
1959 tcg_temp_free_i64(rm_64);
1961 return true;
1962 }
1964 #define DO_NARROW_3D(INSN, OP, NARROWTYPE, EXTOP) \
1965 static bool trans_##INSN##_3d(DisasContext *s, arg_3diff *a) \
1966 { \
1967 static NeonGenTwo64OpFn * const addfn[] = { \
1968 gen_helper_neon_##OP##l_u16, \
1969 gen_helper_neon_##OP##l_u32, \
1970 tcg_gen_##OP##_i64, \
1971 NULL, \
1972 }; \
1973 static NeonGenNarrowFn * const narrowfn[] = { \
1974 gen_helper_neon_##NARROWTYPE##_high_u8, \
1975 gen_helper_neon_##NARROWTYPE##_high_u16, \
1976 EXTOP, \
1977 NULL, \
1978 }; \
1979 return do_narrow_3d(s, a, addfn[a->size], narrowfn[a->size]); \
1980 }
1982 static void gen_narrow_round_high_u32(TCGv_i32 rd, TCGv_i64 rn)
1983 {
1984 tcg_gen_addi_i64(rn, rn, 1u << 31);
1985 tcg_gen_extrh_i64_i32(rd, rn);
1986 }
1988 DO_NARROW_3D(VADDHN, add, narrow, tcg_gen_extrh_i64_i32)
1989 DO_NARROW_3D(VSUBHN, sub, narrow, tcg_gen_extrh_i64_i32)
1990 DO_NARROW_3D(VRADDHN, add, narrow_round, gen_narrow_round_high_u32)
1991 DO_NARROW_3D(VRSUBHN, sub, narrow_round, gen_narrow_round_high_u32)
1993 static bool do_long_3d(DisasContext *s, arg_3diff *a,
1994 NeonGenTwoOpWidenFn *opfn,
1995 NeonGenTwo64OpFn *accfn)
1996 {
1997 /*
1998 * 3-regs different lengths, long operations.
1999 * These perform an operation on two inputs that returns a double-width
2000 * result, and then possibly perform an accumulation operation of
2001 * that result into the double-width destination.
2002 */
2003 TCGv_i64 rd0, rd1, tmp;
2004 TCGv_i32 rn, rm;
2006 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2007 return false;
2008 }
2010 /* UNDEF accesses to D16-D31 if they don't exist. */
2011 if (!dc_isar_feature(aa32_simd_r32, s) &&
2012 ((a->vd | a->vn | a->vm) & 0x10)) {
2013 return false;
2014 }
2016 if (!opfn) {
2017 /* size == 3 case, which is an entirely different insn group */
2018 return false;
2019 }
2021 if (a->vd & 1) {
2022 return false;
2023 }
2025 if (!vfp_access_check(s)) {
2026 return true;
2027 }
2029 rd0 = tcg_temp_new_i64();
2030 rd1 = tcg_temp_new_i64();
2032 rn = tcg_temp_new_i32();
2033 rm = tcg_temp_new_i32();
2034 read_neon_element32(rn, a->vn, 0, MO_32);
2035 read_neon_element32(rm, a->vm, 0, MO_32);
2036 opfn(rd0, rn, rm);
2038 read_neon_element32(rn, a->vn, 1, MO_32);
2039 read_neon_element32(rm, a->vm, 1, MO_32);
2040 opfn(rd1, rn, rm);
2041 tcg_temp_free_i32(rn);
2042 tcg_temp_free_i32(rm);
2044 /* Don't store results until after all loads: they might overlap */
2045 if (accfn) {
2046 tmp = tcg_temp_new_i64();
2047 read_neon_element64(tmp, a->vd, 0, MO_64);
2048 accfn(rd0, tmp, rd0);
2049 read_neon_element64(tmp, a->vd, 1, MO_64);
2050 accfn(rd1, tmp, rd1);
2051 tcg_temp_free_i64(tmp);
2052 }
2054 write_neon_element64(rd0, a->vd, 0, MO_64);
2055 write_neon_element64(rd1, a->vd, 1, MO_64);
2056 tcg_temp_free_i64(rd0);
2057 tcg_temp_free_i64(rd1);
2059 return true;
2060 }
2062 static bool trans_VABDL_S_3d(DisasContext *s, arg_3diff *a)
2063 {
2064 static NeonGenTwoOpWidenFn * const opfn[] = {
2065 gen_helper_neon_abdl_s16,
2066 gen_helper_neon_abdl_s32,
2067 gen_helper_neon_abdl_s64,
2068 NULL,
2069 };
2071 return do_long_3d(s, a, opfn[a->size], NULL);
2072 }
2074 static bool trans_VABDL_U_3d(DisasContext *s, arg_3diff *a)
2075 {
2076 static NeonGenTwoOpWidenFn * const opfn[] = {
2077 gen_helper_neon_abdl_u16,
2078 gen_helper_neon_abdl_u32,
2079 gen_helper_neon_abdl_u64,
2080 NULL,
2081 };
2083 return do_long_3d(s, a, opfn[a->size], NULL);
2084 }
2086 static bool trans_VABAL_S_3d(DisasContext *s, arg_3diff *a)
2087 {
2088 static NeonGenTwoOpWidenFn * const opfn[] = {
2089 gen_helper_neon_abdl_s16,
2090 gen_helper_neon_abdl_s32,
2091 gen_helper_neon_abdl_s64,
2092 NULL,
2093 };
2094 static NeonGenTwo64OpFn * const addfn[] = {
2095 gen_helper_neon_addl_u16,
2096 gen_helper_neon_addl_u32,
2097 tcg_gen_add_i64,
2098 NULL,
2099 };
2101 return do_long_3d(s, a, opfn[a->size], addfn[a->size]);
2102 }
2104 static bool trans_VABAL_U_3d(DisasContext *s, arg_3diff *a)
2105 {
2106 static NeonGenTwoOpWidenFn * const opfn[] = {
2107 gen_helper_neon_abdl_u16,
2108 gen_helper_neon_abdl_u32,
2109 gen_helper_neon_abdl_u64,
2110 NULL,
2111 };
2112 static NeonGenTwo64OpFn * const addfn[] = {
2113 gen_helper_neon_addl_u16,
2114 gen_helper_neon_addl_u32,
2115 tcg_gen_add_i64,
2116 NULL,
2117 };
2119 return do_long_3d(s, a, opfn[a->size], addfn[a->size]);
2120 }
2122 static void gen_mull_s32(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
2123 {
2124 TCGv_i32 lo = tcg_temp_new_i32();
2125 TCGv_i32 hi = tcg_temp_new_i32();
2127 tcg_gen_muls2_i32(lo, hi, rn, rm);
2128 tcg_gen_concat_i32_i64(rd, lo, hi);
2130 tcg_temp_free_i32(lo);
2131 tcg_temp_free_i32(hi);
2132 }
2134 static void gen_mull_u32(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
2135 {
2136 TCGv_i32 lo = tcg_temp_new_i32();
2137 TCGv_i32 hi = tcg_temp_new_i32();
2139 tcg_gen_mulu2_i32(lo, hi, rn, rm);
2140 tcg_gen_concat_i32_i64(rd, lo, hi);
2142 tcg_temp_free_i32(lo);
2143 tcg_temp_free_i32(hi);
2144 }
2146 static bool trans_VMULL_S_3d(DisasContext *s, arg_3diff *a)
2147 {
2148 static NeonGenTwoOpWidenFn * const opfn[] = {
2149 gen_helper_neon_mull_s8,
2150 gen_helper_neon_mull_s16,
2151 gen_mull_s32,
2152 NULL,
2153 };
2155 return do_long_3d(s, a, opfn[a->size], NULL);
2156 }
2158 static bool trans_VMULL_U_3d(DisasContext *s, arg_3diff *a)
2159 {
2160 static NeonGenTwoOpWidenFn * const opfn[] = {
2161 gen_helper_neon_mull_u8,
2162 gen_helper_neon_mull_u16,
2163 gen_mull_u32,
2164 NULL,
2165 };
2167 return do_long_3d(s, a, opfn[a->size], NULL);
2168 }
2170 #define DO_VMLAL(INSN,MULL,ACC) \
2171 static bool trans_##INSN##_3d(DisasContext *s, arg_3diff *a) \
2172 { \
2173 static NeonGenTwoOpWidenFn * const opfn[] = { \
2174 gen_helper_neon_##MULL##8, \
2175 gen_helper_neon_##MULL##16, \
2176 gen_##MULL##32, \
2177 NULL, \
2178 }; \
2179 static NeonGenTwo64OpFn * const accfn[] = { \
2180 gen_helper_neon_##ACC##l_u16, \
2181 gen_helper_neon_##ACC##l_u32, \
2182 tcg_gen_##ACC##_i64, \
2183 NULL, \
2184 }; \
2185 return do_long_3d(s, a, opfn[a->size], accfn[a->size]); \
2186 }
2188 DO_VMLAL(VMLAL_S,mull_s,add)
2189 DO_VMLAL(VMLAL_U,mull_u,add)
2190 DO_VMLAL(VMLSL_S,mull_s,sub)
2191 DO_VMLAL(VMLSL_U,mull_u,sub)
2193 static void gen_VQDMULL_16(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
2194 {
2195 gen_helper_neon_mull_s16(rd, rn, rm);
2196 gen_helper_neon_addl_saturate_s32(rd, cpu_env, rd, rd);
2197 }
2199 static void gen_VQDMULL_32(TCGv_i64 rd, TCGv_i32 rn, TCGv_i32 rm)
2200 {
2201 gen_mull_s32(rd, rn, rm);
2202 gen_helper_neon_addl_saturate_s64(rd, cpu_env, rd, rd);
2203 }
2205 static bool trans_VQDMULL_3d(DisasContext *s, arg_3diff *a)
2206 {
2207 static NeonGenTwoOpWidenFn * const opfn[] = {
2208 NULL,
2209 gen_VQDMULL_16,
2210 gen_VQDMULL_32,
2211 NULL,
2212 };
2214 return do_long_3d(s, a, opfn[a->size], NULL);
2215 }
2217 static void gen_VQDMLAL_acc_16(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
2218 {
2219 gen_helper_neon_addl_saturate_s32(rd, cpu_env, rn, rm);
2220 }
2222 static void gen_VQDMLAL_acc_32(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
2223 {
2224 gen_helper_neon_addl_saturate_s64(rd, cpu_env, rn, rm);
2225 }
2227 static bool trans_VQDMLAL_3d(DisasContext *s, arg_3diff *a)
2228 {
2229 static NeonGenTwoOpWidenFn * const opfn[] = {
2230 NULL,
2231 gen_VQDMULL_16,
2232 gen_VQDMULL_32,
2233 NULL,
2234 };
2235 static NeonGenTwo64OpFn * const accfn[] = {
2236 NULL,
2237 gen_VQDMLAL_acc_16,
2238 gen_VQDMLAL_acc_32,
2239 NULL,
2240 };
2242 return do_long_3d(s, a, opfn[a->size], accfn[a->size]);
2243 }
2245 static void gen_VQDMLSL_acc_16(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
2246 {
2247 gen_helper_neon_negl_u32(rm, rm);
2248 gen_helper_neon_addl_saturate_s32(rd, cpu_env, rn, rm);
2249 }
2251 static void gen_VQDMLSL_acc_32(TCGv_i64 rd, TCGv_i64 rn, TCGv_i64 rm)
2252 {
2253 tcg_gen_neg_i64(rm, rm);
2254 gen_helper_neon_addl_saturate_s64(rd, cpu_env, rn, rm);
2255 }
2257 static bool trans_VQDMLSL_3d(DisasContext *s, arg_3diff *a)
2258 {
2259 static NeonGenTwoOpWidenFn * const opfn[] = {
2260 NULL,
2261 gen_VQDMULL_16,
2262 gen_VQDMULL_32,
2263 NULL,
2264 };
2265 static NeonGenTwo64OpFn * const accfn[] = {
2266 NULL,
2267 gen_VQDMLSL_acc_16,
2268 gen_VQDMLSL_acc_32,
2269 NULL,
2270 };
2272 return do_long_3d(s, a, opfn[a->size], accfn[a->size]);
2273 }
2275 static bool trans_VMULL_P_3d(DisasContext *s, arg_3diff *a)
2276 {
2277 gen_helper_gvec_3 *fn_gvec;
2279 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2280 return false;
2281 }
2283 /* UNDEF accesses to D16-D31 if they don't exist. */
2284 if (!dc_isar_feature(aa32_simd_r32, s) &&
2285 ((a->vd | a->vn | a->vm) & 0x10)) {
2286 return false;
2287 }
2289 if (a->vd & 1) {
2290 return false;
2291 }
2293 switch (a->size) {
2294 case 0:
2295 fn_gvec = gen_helper_neon_pmull_h;
2296 break;
2297 case 2:
2298 if (!dc_isar_feature(aa32_pmull, s)) {
2299 return false;
2300 }
2301 fn_gvec = gen_helper_gvec_pmull_q;
2302 break;
2303 default:
2304 return false;
2305 }
2307 if (!vfp_access_check(s)) {
2308 return true;
2309 }
2311 tcg_gen_gvec_3_ool(neon_full_reg_offset(a->vd),
2312 neon_full_reg_offset(a->vn),
2313 neon_full_reg_offset(a->vm),
2314 16, 16, 0, fn_gvec);
2315 return true;
2316 }
2318 static void gen_neon_dup_low16(TCGv_i32 var)
2319 {
2320 TCGv_i32 tmp = tcg_temp_new_i32();
2321 tcg_gen_ext16u_i32(var, var);
2322 tcg_gen_shli_i32(tmp, var, 16);
2323 tcg_gen_or_i32(var, var, tmp);
2324 tcg_temp_free_i32(tmp);
2325 }
2327 static void gen_neon_dup_high16(TCGv_i32 var)
2328 {
2329 TCGv_i32 tmp = tcg_temp_new_i32();
2330 tcg_gen_andi_i32(var, var, 0xffff0000);
2331 tcg_gen_shri_i32(tmp, var, 16);
2332 tcg_gen_or_i32(var, var, tmp);
2333 tcg_temp_free_i32(tmp);
2334 }
2336 static inline TCGv_i32 neon_get_scalar(int size, int reg)
2337 {
2338 TCGv_i32 tmp = tcg_temp_new_i32();
2339 if (size == MO_16) {
2340 read_neon_element32(tmp, reg & 7, reg >> 4, MO_32);
2341 if (reg & 8) {
2342 gen_neon_dup_high16(tmp);
2343 } else {
2344 gen_neon_dup_low16(tmp);
2345 }
2346 } else {
2347 read_neon_element32(tmp, reg & 15, reg >> 4, MO_32);
2348 }
2349 return tmp;
2350 }
2352 static bool do_2scalar(DisasContext *s, arg_2scalar *a,
2353 NeonGenTwoOpFn *opfn, NeonGenTwoOpFn *accfn)
2354 {
2355 /*
2356 * Two registers and a scalar: perform an operation between
2357 * the input elements and the scalar, and then possibly
2358 * perform an accumulation operation of that result into the
2359 * destination.
2360 */
2361 TCGv_i32 scalar, tmp;
2362 int pass;
2364 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2365 return false;
2366 }
2368 /* UNDEF accesses to D16-D31 if they don't exist. */
2369 if (!dc_isar_feature(aa32_simd_r32, s) &&
2370 ((a->vd | a->vn | a->vm) & 0x10)) {
2371 return false;
2372 }
2374 if (!opfn) {
2375 /* Bad size (including size == 3, which is a different insn group) */
2376 return false;
2377 }
2379 if (a->q && ((a->vd | a->vn) & 1)) {
2380 return false;
2381 }
2383 if (!vfp_access_check(s)) {
2384 return true;
2385 }
2387 scalar = neon_get_scalar(a->size, a->vm);
2388 tmp = tcg_temp_new_i32();
2390 for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
2391 read_neon_element32(tmp, a->vn, pass, MO_32);
2392 opfn(tmp, tmp, scalar);
2393 if (accfn) {
2394 TCGv_i32 rd = tcg_temp_new_i32();
2395 read_neon_element32(rd, a->vd, pass, MO_32);
2396 accfn(tmp, rd, tmp);
2397 tcg_temp_free_i32(rd);
2398 }
2399 write_neon_element32(tmp, a->vd, pass, MO_32);
2400 }
2401 tcg_temp_free_i32(tmp);
2402 tcg_temp_free_i32(scalar);
2403 return true;
2404 }
2406 static bool trans_VMUL_2sc(DisasContext *s, arg_2scalar *a)
2407 {
2408 static NeonGenTwoOpFn * const opfn[] = {
2409 NULL,
2410 gen_helper_neon_mul_u16,
2411 tcg_gen_mul_i32,
2412 NULL,
2413 };
2415 return do_2scalar(s, a, opfn[a->size], NULL);
2416 }
2418 static bool trans_VMLA_2sc(DisasContext *s, arg_2scalar *a)
2419 {
2420 static NeonGenTwoOpFn * const opfn[] = {
2421 NULL,
2422 gen_helper_neon_mul_u16,
2423 tcg_gen_mul_i32,
2424 NULL,
2425 };
2426 static NeonGenTwoOpFn * const accfn[] = {
2427 NULL,
2428 gen_helper_neon_add_u16,
2429 tcg_gen_add_i32,
2430 NULL,
2431 };
2433 return do_2scalar(s, a, opfn[a->size], accfn[a->size]);
2434 }
2436 static bool trans_VMLS_2sc(DisasContext *s, arg_2scalar *a)
2437 {
2438 static NeonGenTwoOpFn * const opfn[] = {
2439 NULL,
2440 gen_helper_neon_mul_u16,
2441 tcg_gen_mul_i32,
2442 NULL,
2443 };
2444 static NeonGenTwoOpFn * const accfn[] = {
2445 NULL,
2446 gen_helper_neon_sub_u16,
2447 tcg_gen_sub_i32,
2448 NULL,
2449 };
2451 return do_2scalar(s, a, opfn[a->size], accfn[a->size]);
2452 }
2454 static bool do_2scalar_fp_vec(DisasContext *s, arg_2scalar *a,
2455 gen_helper_gvec_3_ptr *fn)
2456 {
2457 /* Two registers and a scalar, using gvec */
2458 int vec_size = a->q ? 16 : 8;
2459 int rd_ofs = neon_full_reg_offset(a->vd);
2460 int rn_ofs = neon_full_reg_offset(a->vn);
2461 int rm_ofs;
2462 int idx;
2463 TCGv_ptr fpstatus;
2465 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2466 return false;
2467 }
2469 /* UNDEF accesses to D16-D31 if they don't exist. */
2470 if (!dc_isar_feature(aa32_simd_r32, s) &&
2471 ((a->vd | a->vn | a->vm) & 0x10)) {
2472 return false;
2473 }
2475 if (!fn) {
2476 /* Bad size (including size == 3, which is a different insn group) */
2477 return false;
2478 }
2480 if (a->q && ((a->vd | a->vn) & 1)) {
2481 return false;
2482 }
2484 if (!vfp_access_check(s)) {
2485 return true;
2486 }
2488 /* a->vm is M:Vm, which encodes both register and index */
2489 idx = extract32(a->vm, a->size + 2, 2);
2490 a->vm = extract32(a->vm, 0, a->size + 2);
2491 rm_ofs = neon_full_reg_offset(a->vm);
2493 fpstatus = fpstatus_ptr(a->size == 1 ? FPST_STD_F16 : FPST_STD);
2494 tcg_gen_gvec_3_ptr(rd_ofs, rn_ofs, rm_ofs, fpstatus,
2495 vec_size, vec_size, idx, fn);
2496 tcg_temp_free_ptr(fpstatus);
2497 return true;
2498 }
2500 #define DO_VMUL_F_2sc(NAME, FUNC) \
2501 static bool trans_##NAME##_F_2sc(DisasContext *s, arg_2scalar *a) \
2502 { \
2503 static gen_helper_gvec_3_ptr * const opfn[] = { \
2504 NULL, \
2505 gen_helper_##FUNC##_h, \
2506 gen_helper_##FUNC##_s, \
2507 NULL, \
2508 }; \
2509 if (a->size == MO_16 && !dc_isar_feature(aa32_fp16_arith, s)) { \
2510 return false; \
2511 } \
2512 return do_2scalar_fp_vec(s, a, opfn[a->size]); \
2513 }
2515 DO_VMUL_F_2sc(VMUL, gvec_fmul_idx)
2516 DO_VMUL_F_2sc(VMLA, gvec_fmla_nf_idx)
2517 DO_VMUL_F_2sc(VMLS, gvec_fmls_nf_idx)
2519 WRAP_ENV_FN(gen_VQDMULH_16, gen_helper_neon_qdmulh_s16)
2520 WRAP_ENV_FN(gen_VQDMULH_32, gen_helper_neon_qdmulh_s32)
2521 WRAP_ENV_FN(gen_VQRDMULH_16, gen_helper_neon_qrdmulh_s16)
2522 WRAP_ENV_FN(gen_VQRDMULH_32, gen_helper_neon_qrdmulh_s32)
2524 static bool trans_VQDMULH_2sc(DisasContext *s, arg_2scalar *a)
2525 {
2526 static NeonGenTwoOpFn * const opfn[] = {
2527 NULL,
2528 gen_VQDMULH_16,
2529 gen_VQDMULH_32,
2530 NULL,
2531 };
2533 return do_2scalar(s, a, opfn[a->size], NULL);
2534 }
2536 static bool trans_VQRDMULH_2sc(DisasContext *s, arg_2scalar *a)
2537 {
2538 static NeonGenTwoOpFn * const opfn[] = {
2539 NULL,
2540 gen_VQRDMULH_16,
2541 gen_VQRDMULH_32,
2542 NULL,
2543 };
2545 return do_2scalar(s, a, opfn[a->size], NULL);
2546 }
2548 static bool do_vqrdmlah_2sc(DisasContext *s, arg_2scalar *a,
2549 NeonGenThreeOpEnvFn *opfn)
2550 {
2551 /*
2552 * VQRDMLAH/VQRDMLSH: this is like do_2scalar, but the opfn
2553 * performs a kind of fused op-then-accumulate using a helper
2554 * function that takes all of rd, rn and the scalar at once.
2555 */
2556 TCGv_i32 scalar, rn, rd;
2557 int pass;
2559 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2560 return false;
2561 }
2563 if (!dc_isar_feature(aa32_rdm, s)) {
2564 return false;
2565 }
2567 /* UNDEF accesses to D16-D31 if they don't exist. */
2568 if (!dc_isar_feature(aa32_simd_r32, s) &&
2569 ((a->vd | a->vn | a->vm) & 0x10)) {
2570 return false;
2571 }
2573 if (!opfn) {
2574 /* Bad size (including size == 3, which is a different insn group) */
2575 return false;
2576 }
2578 if (a->q && ((a->vd | a->vn) & 1)) {
2579 return false;
2580 }
2582 if (!vfp_access_check(s)) {
2583 return true;
2584 }
2586 scalar = neon_get_scalar(a->size, a->vm);
2587 rn = tcg_temp_new_i32();
2588 rd = tcg_temp_new_i32();
2590 for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
2591 read_neon_element32(rn, a->vn, pass, MO_32);
2592 read_neon_element32(rd, a->vd, pass, MO_32);
2593 opfn(rd, cpu_env, rn, scalar, rd);
2594 write_neon_element32(rd, a->vd, pass, MO_32);
2595 }
2596 tcg_temp_free_i32(rn);
2597 tcg_temp_free_i32(rd);
2598 tcg_temp_free_i32(scalar);
2600 return true;
2601 }
2603 static bool trans_VQRDMLAH_2sc(DisasContext *s, arg_2scalar *a)
2604 {
2605 static NeonGenThreeOpEnvFn *opfn[] = {
2606 NULL,
2607 gen_helper_neon_qrdmlah_s16,
2608 gen_helper_neon_qrdmlah_s32,
2609 NULL,
2610 };
2611 return do_vqrdmlah_2sc(s, a, opfn[a->size]);
2612 }
2614 static bool trans_VQRDMLSH_2sc(DisasContext *s, arg_2scalar *a)
2615 {
2616 static NeonGenThreeOpEnvFn *opfn[] = {
2617 NULL,
2618 gen_helper_neon_qrdmlsh_s16,
2619 gen_helper_neon_qrdmlsh_s32,
2620 NULL,
2621 };
2622 return do_vqrdmlah_2sc(s, a, opfn[a->size]);
2623 }
2625 static bool do_2scalar_long(DisasContext *s, arg_2scalar *a,
2626 NeonGenTwoOpWidenFn *opfn,
2627 NeonGenTwo64OpFn *accfn)
2628 {
2629 /*
2630 * Two registers and a scalar, long operations: perform an
2631 * operation on the input elements and the scalar which produces
2632 * a double-width result, and then possibly perform an accumulation
2633 * operation of that result into the destination.
2634 */
2635 TCGv_i32 scalar, rn;
2636 TCGv_i64 rn0_64, rn1_64;
2638 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2639 return false;
2640 }
2642 /* UNDEF accesses to D16-D31 if they don't exist. */
2643 if (!dc_isar_feature(aa32_simd_r32, s) &&
2644 ((a->vd | a->vn | a->vm) & 0x10)) {
2645 return false;
2646 }
2648 if (!opfn) {
2649 /* Bad size (including size == 3, which is a different insn group) */
2650 return false;
2651 }
2653 if (a->vd & 1) {
2654 return false;
2655 }
2657 if (!vfp_access_check(s)) {
2658 return true;
2659 }
2661 scalar = neon_get_scalar(a->size, a->vm);
2663 /* Load all inputs before writing any outputs, in case of overlap */
2664 rn = tcg_temp_new_i32();
2665 read_neon_element32(rn, a->vn, 0, MO_32);
2666 rn0_64 = tcg_temp_new_i64();
2667 opfn(rn0_64, rn, scalar);
2669 read_neon_element32(rn, a->vn, 1, MO_32);
2670 rn1_64 = tcg_temp_new_i64();
2671 opfn(rn1_64, rn, scalar);
2672 tcg_temp_free_i32(rn);
2673 tcg_temp_free_i32(scalar);
2675 if (accfn) {
2676 TCGv_i64 t64 = tcg_temp_new_i64();
2677 read_neon_element64(t64, a->vd, 0, MO_64);
2678 accfn(rn0_64, t64, rn0_64);
2679 read_neon_element64(t64, a->vd, 1, MO_64);
2680 accfn(rn1_64, t64, rn1_64);
2681 tcg_temp_free_i64(t64);
2682 }
2684 write_neon_element64(rn0_64, a->vd, 0, MO_64);
2685 write_neon_element64(rn1_64, a->vd, 1, MO_64);
2686 tcg_temp_free_i64(rn0_64);
2687 tcg_temp_free_i64(rn1_64);
2688 return true;
2689 }
2691 static bool trans_VMULL_S_2sc(DisasContext *s, arg_2scalar *a)
2692 {
2693 static NeonGenTwoOpWidenFn * const opfn[] = {
2694 NULL,
2695 gen_helper_neon_mull_s16,
2696 gen_mull_s32,
2697 NULL,
2698 };
2700 return do_2scalar_long(s, a, opfn[a->size], NULL);
2701 }
2703 static bool trans_VMULL_U_2sc(DisasContext *s, arg_2scalar *a)
2704 {
2705 static NeonGenTwoOpWidenFn * const opfn[] = {
2706 NULL,
2707 gen_helper_neon_mull_u16,
2708 gen_mull_u32,
2709 NULL,
2710 };
2712 return do_2scalar_long(s, a, opfn[a->size], NULL);
2713 }
2715 #define DO_VMLAL_2SC(INSN, MULL, ACC) \
2716 static bool trans_##INSN##_2sc(DisasContext *s, arg_2scalar *a) \
2717 { \
2718 static NeonGenTwoOpWidenFn * const opfn[] = { \
2719 NULL, \
2720 gen_helper_neon_##MULL##16, \
2721 gen_##MULL##32, \
2722 NULL, \
2723 }; \
2724 static NeonGenTwo64OpFn * const accfn[] = { \
2725 NULL, \
2726 gen_helper_neon_##ACC##l_u32, \
2727 tcg_gen_##ACC##_i64, \
2728 NULL, \
2729 }; \
2730 return do_2scalar_long(s, a, opfn[a->size], accfn[a->size]); \
2731 }
2733 DO_VMLAL_2SC(VMLAL_S, mull_s, add)
2734 DO_VMLAL_2SC(VMLAL_U, mull_u, add)
2735 DO_VMLAL_2SC(VMLSL_S, mull_s, sub)
2736 DO_VMLAL_2SC(VMLSL_U, mull_u, sub)
2738 static bool trans_VQDMULL_2sc(DisasContext *s, arg_2scalar *a)
2739 {
2740 static NeonGenTwoOpWidenFn * const opfn[] = {
2741 NULL,
2742 gen_VQDMULL_16,
2743 gen_VQDMULL_32,
2744 NULL,
2745 };
2747 return do_2scalar_long(s, a, opfn[a->size], NULL);
2748 }
2750 static bool trans_VQDMLAL_2sc(DisasContext *s, arg_2scalar *a)
2751 {
2752 static NeonGenTwoOpWidenFn * const opfn[] = {
2753 NULL,
2754 gen_VQDMULL_16,
2755 gen_VQDMULL_32,
2756 NULL,
2757 };
2758 static NeonGenTwo64OpFn * const accfn[] = {
2759 NULL,
2760 gen_VQDMLAL_acc_16,
2761 gen_VQDMLAL_acc_32,
2762 NULL,
2763 };
2765 return do_2scalar_long(s, a, opfn[a->size], accfn[a->size]);
2766 }
2768 static bool trans_VQDMLSL_2sc(DisasContext *s, arg_2scalar *a)
2769 {
2770 static NeonGenTwoOpWidenFn * const opfn[] = {
2771 NULL,
2772 gen_VQDMULL_16,
2773 gen_VQDMULL_32,
2774 NULL,
2775 };
2776 static NeonGenTwo64OpFn * const accfn[] = {
2777 NULL,
2778 gen_VQDMLSL_acc_16,
2779 gen_VQDMLSL_acc_32,
2780 NULL,
2781 };
2783 return do_2scalar_long(s, a, opfn[a->size], accfn[a->size]);
2784 }
2786 static bool trans_VEXT(DisasContext *s, arg_VEXT *a)
2787 {
2788 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2789 return false;
2790 }
2792 /* UNDEF accesses to D16-D31 if they don't exist. */
2793 if (!dc_isar_feature(aa32_simd_r32, s) &&
2794 ((a->vd | a->vn | a->vm) & 0x10)) {
2795 return false;
2796 }
2798 if ((a->vn | a->vm | a->vd) & a->q) {
2799 return false;
2800 }
2802 if (a->imm > 7 && !a->q) {
2803 return false;
2804 }
2806 if (!vfp_access_check(s)) {
2807 return true;
2808 }
2810 if (!a->q) {
2811 /* Extract 64 bits from <Vm:Vn> */
2812 TCGv_i64 left, right, dest;
2814 left = tcg_temp_new_i64();
2815 right = tcg_temp_new_i64();
2816 dest = tcg_temp_new_i64();
2818 read_neon_element64(right, a->vn, 0, MO_64);
2819 read_neon_element64(left, a->vm, 0, MO_64);
2820 tcg_gen_extract2_i64(dest, right, left, a->imm * 8);
2821 write_neon_element64(dest, a->vd, 0, MO_64);
2823 tcg_temp_free_i64(left);
2824 tcg_temp_free_i64(right);
2825 tcg_temp_free_i64(dest);
2826 } else {
2827 /* Extract 128 bits from <Vm+1:Vm:Vn+1:Vn> */
2828 TCGv_i64 left, middle, right, destleft, destright;
2830 left = tcg_temp_new_i64();
2831 middle = tcg_temp_new_i64();
2832 right = tcg_temp_new_i64();
2833 destleft = tcg_temp_new_i64();
2834 destright = tcg_temp_new_i64();
2836 if (a->imm < 8) {
2837 read_neon_element64(right, a->vn, 0, MO_64);
2838 read_neon_element64(middle, a->vn, 1, MO_64);
2839 tcg_gen_extract2_i64(destright, right, middle, a->imm * 8);
2840 read_neon_element64(left, a->vm, 0, MO_64);
2841 tcg_gen_extract2_i64(destleft, middle, left, a->imm * 8);
2842 } else {
2843 read_neon_element64(right, a->vn, 1, MO_64);
2844 read_neon_element64(middle, a->vm, 0, MO_64);
2845 tcg_gen_extract2_i64(destright, right, middle, (a->imm - 8) * 8);
2846 read_neon_element64(left, a->vm, 1, MO_64);
2847 tcg_gen_extract2_i64(destleft, middle, left, (a->imm - 8) * 8);
2848 }
2850 write_neon_element64(destright, a->vd, 0, MO_64);
2851 write_neon_element64(destleft, a->vd, 1, MO_64);
2853 tcg_temp_free_i64(destright);
2854 tcg_temp_free_i64(destleft);
2855 tcg_temp_free_i64(right);
2856 tcg_temp_free_i64(middle);
2857 tcg_temp_free_i64(left);
2858 }
2859 return true;
2860 }
2862 static bool trans_VTBL(DisasContext *s, arg_VTBL *a)
2863 {
2864 int n;
2865 TCGv_i32 tmp, tmp2, tmp3, tmp4;
2866 TCGv_ptr ptr1;
2868 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2869 return false;
2870 }
2872 /* UNDEF accesses to D16-D31 if they don't exist. */
2873 if (!dc_isar_feature(aa32_simd_r32, s) &&
2874 ((a->vd | a->vn | a->vm) & 0x10)) {
2875 return false;
2876 }
2878 if (!vfp_access_check(s)) {
2879 return true;
2880 }
2882 n = a->len + 1;
2883 if ((a->vn + n) > 32) {
2884 /*
2885 * This is UNPREDICTABLE; we choose to UNDEF to avoid the
2886 * helper function running off the end of the register file.
2887 */
2888 return false;
2889 }
2890 n <<= 3;
2891 tmp = tcg_temp_new_i32();
2892 if (a->op) {
2893 read_neon_element32(tmp, a->vd, 0, MO_32);
2894 } else {
2895 tcg_gen_movi_i32(tmp, 0);
2896 }
2897 tmp2 = tcg_temp_new_i32();
2898 read_neon_element32(tmp2, a->vm, 0, MO_32);
2899 ptr1 = vfp_reg_ptr(true, a->vn);
2900 tmp4 = tcg_const_i32(n);
2901 gen_helper_neon_tbl(tmp2, tmp2, tmp, ptr1, tmp4);
2903 if (a->op) {
2904 read_neon_element32(tmp, a->vd, 1, MO_32);
2905 } else {
2906 tcg_gen_movi_i32(tmp, 0);
2907 }
2908 tmp3 = tcg_temp_new_i32();
2909 read_neon_element32(tmp3, a->vm, 1, MO_32);
2910 gen_helper_neon_tbl(tmp3, tmp3, tmp, ptr1, tmp4);
2911 tcg_temp_free_i32(tmp);
2912 tcg_temp_free_i32(tmp4);
2913 tcg_temp_free_ptr(ptr1);
2915 write_neon_element32(tmp2, a->vd, 0, MO_32);
2916 write_neon_element32(tmp3, a->vd, 1, MO_32);
2917 tcg_temp_free_i32(tmp2);
2918 tcg_temp_free_i32(tmp3);
2919 return true;
2920 }
2922 static bool trans_VDUP_scalar(DisasContext *s, arg_VDUP_scalar *a)
2923 {
2924 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2925 return false;
2926 }
2928 /* UNDEF accesses to D16-D31 if they don't exist. */
2929 if (!dc_isar_feature(aa32_simd_r32, s) &&
2930 ((a->vd | a->vm) & 0x10)) {
2931 return false;
2932 }
2934 if (a->vd & a->q) {
2935 return false;
2936 }
2938 if (!vfp_access_check(s)) {
2939 return true;
2940 }
2942 tcg_gen_gvec_dup_mem(a->size, neon_full_reg_offset(a->vd),
2943 neon_element_offset(a->vm, a->index, a->size),
2944 a->q ? 16 : 8, a->q ? 16 : 8);
2945 return true;
2946 }
2948 static bool trans_VREV64(DisasContext *s, arg_VREV64 *a)
2949 {
2950 int pass, half;
2951 TCGv_i32 tmp[2];
2953 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
2954 return false;
2955 }
2957 /* UNDEF accesses to D16-D31 if they don't exist. */
2958 if (!dc_isar_feature(aa32_simd_r32, s) &&
2959 ((a->vd | a->vm) & 0x10)) {
2960 return false;
2961 }
2963 if ((a->vd | a->vm) & a->q) {
2964 return false;
2965 }
2967 if (a->size == 3) {
2968 return false;
2969 }
2971 if (!vfp_access_check(s)) {
2972 return true;
2973 }
2975 tmp[0] = tcg_temp_new_i32();
2976 tmp[1] = tcg_temp_new_i32();
2978 for (pass = 0; pass < (a->q ? 2 : 1); pass++) {
2979 for (half = 0; half < 2; half++) {
2980 read_neon_element32(tmp[half], a->vm, pass * 2 + half, MO_32);
2981 switch (a->size) {
2982 case 0:
2983 tcg_gen_bswap32_i32(tmp[half], tmp[half]);
2984 break;
2985 case 1:
2986 gen_swap_half(tmp[half], tmp[half]);
2987 break;
2988 case 2:
2989 break;
2990 default:
2991 g_assert_not_reached();
2992 }
2993 }
2994 write_neon_element32(tmp[1], a->vd, pass * 2, MO_32);
2995 write_neon_element32(tmp[0], a->vd, pass * 2 + 1, MO_32);
2996 }
2998 tcg_temp_free_i32(tmp[0]);
2999 tcg_temp_free_i32(tmp[1]);
3000 return true;
3001 }
3003 static bool do_2misc_pairwise(DisasContext *s, arg_2misc *a,
3004 NeonGenWidenFn *widenfn,
3005 NeonGenTwo64OpFn *opfn,
3006 NeonGenTwo64OpFn *accfn)
3007 {
3008 /*
3009 * Pairwise long operations: widen both halves of the pair,
3010 * combine the pairs with the opfn, and then possibly accumulate
3011 * into the destination with the accfn.
3012 */
3013 int pass;
3015 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3016 return false;
3017 }
3019 /* UNDEF accesses to D16-D31 if they don't exist. */
3020 if (!dc_isar_feature(aa32_simd_r32, s) &&
3021 ((a->vd | a->vm) & 0x10)) {
3022 return false;
3023 }
3025 if ((a->vd | a->vm) & a->q) {
3026 return false;
3027 }
3029 if (!widenfn) {
3030 return false;
3031 }
3033 if (!vfp_access_check(s)) {
3034 return true;
3035 }
3037 for (pass = 0; pass < a->q + 1; pass++) {
3038 TCGv_i32 tmp;
3039 TCGv_i64 rm0_64, rm1_64, rd_64;
3041 rm0_64 = tcg_temp_new_i64();
3042 rm1_64 = tcg_temp_new_i64();
3043 rd_64 = tcg_temp_new_i64();
3045 tmp = tcg_temp_new_i32();
3046 read_neon_element32(tmp, a->vm, pass * 2, MO_32);
3047 widenfn(rm0_64, tmp);
3048 read_neon_element32(tmp, a->vm, pass * 2 + 1, MO_32);
3049 widenfn(rm1_64, tmp);
3050 tcg_temp_free_i32(tmp);
3052 opfn(rd_64, rm0_64, rm1_64);
3053 tcg_temp_free_i64(rm0_64);
3054 tcg_temp_free_i64(rm1_64);
3056 if (accfn) {
3057 TCGv_i64 tmp64 = tcg_temp_new_i64();
3058 read_neon_element64(tmp64, a->vd, pass, MO_64);
3059 accfn(rd_64, tmp64, rd_64);
3060 tcg_temp_free_i64(tmp64);
3061 }
3062 write_neon_element64(rd_64, a->vd, pass, MO_64);
3063 tcg_temp_free_i64(rd_64);
3064 }
3065 return true;
3066 }
3068 static bool trans_VPADDL_S(DisasContext *s, arg_2misc *a)
3069 {
3070 static NeonGenWidenFn * const widenfn[] = {
3071 gen_helper_neon_widen_s8,
3072 gen_helper_neon_widen_s16,
3073 tcg_gen_ext_i32_i64,
3074 NULL,
3075 };
3076 static NeonGenTwo64OpFn * const opfn[] = {
3077 gen_helper_neon_paddl_u16,
3078 gen_helper_neon_paddl_u32,
3079 tcg_gen_add_i64,
3080 NULL,
3081 };
3083 return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size], NULL);
3084 }
3086 static bool trans_VPADDL_U(DisasContext *s, arg_2misc *a)
3087 {
3088 static NeonGenWidenFn * const widenfn[] = {
3089 gen_helper_neon_widen_u8,
3090 gen_helper_neon_widen_u16,
3091 tcg_gen_extu_i32_i64,
3092 NULL,
3093 };
3094 static NeonGenTwo64OpFn * const opfn[] = {
3095 gen_helper_neon_paddl_u16,
3096 gen_helper_neon_paddl_u32,
3097 tcg_gen_add_i64,
3098 NULL,
3099 };
3101 return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size], NULL);
3102 }
3104 static bool trans_VPADAL_S(DisasContext *s, arg_2misc *a)
3105 {
3106 static NeonGenWidenFn * const widenfn[] = {
3107 gen_helper_neon_widen_s8,
3108 gen_helper_neon_widen_s16,
3109 tcg_gen_ext_i32_i64,
3110 NULL,
3111 };
3112 static NeonGenTwo64OpFn * const opfn[] = {
3113 gen_helper_neon_paddl_u16,
3114 gen_helper_neon_paddl_u32,
3115 tcg_gen_add_i64,
3116 NULL,
3117 };
3118 static NeonGenTwo64OpFn * const accfn[] = {
3119 gen_helper_neon_addl_u16,
3120 gen_helper_neon_addl_u32,
3121 tcg_gen_add_i64,
3122 NULL,
3123 };
3125 return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size],
3126 accfn[a->size]);
3127 }
3129 static bool trans_VPADAL_U(DisasContext *s, arg_2misc *a)
3130 {
3131 static NeonGenWidenFn * const widenfn[] = {
3132 gen_helper_neon_widen_u8,
3133 gen_helper_neon_widen_u16,
3134 tcg_gen_extu_i32_i64,
3135 NULL,
3136 };
3137 static NeonGenTwo64OpFn * const opfn[] = {
3138 gen_helper_neon_paddl_u16,
3139 gen_helper_neon_paddl_u32,
3140 tcg_gen_add_i64,
3141 NULL,
3142 };
3143 static NeonGenTwo64OpFn * const accfn[] = {
3144 gen_helper_neon_addl_u16,
3145 gen_helper_neon_addl_u32,
3146 tcg_gen_add_i64,
3147 NULL,
3148 };
3150 return do_2misc_pairwise(s, a, widenfn[a->size], opfn[a->size],
3151 accfn[a->size]);
3152 }
3154 typedef void ZipFn(TCGv_ptr, TCGv_ptr);
3156 static bool do_zip_uzp(DisasContext *s, arg_2misc *a,
3157 ZipFn *fn)
3158 {
3159 TCGv_ptr pd, pm;
3161 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3162 return false;
3163 }
3165 /* UNDEF accesses to D16-D31 if they don't exist. */
3166 if (!dc_isar_feature(aa32_simd_r32, s) &&
3167 ((a->vd | a->vm) & 0x10)) {
3168 return false;
3169 }
3171 if ((a->vd | a->vm) & a->q) {
3172 return false;
3173 }
3175 if (!fn) {
3176 /* Bad size or size/q combination */
3177 return false;
3178 }
3180 if (!vfp_access_check(s)) {
3181 return true;
3182 }
3184 pd = vfp_reg_ptr(true, a->vd);
3185 pm = vfp_reg_ptr(true, a->vm);
3186 fn(pd, pm);
3187 tcg_temp_free_ptr(pd);
3188 tcg_temp_free_ptr(pm);
3189 return true;
3190 }
3192 static bool trans_VUZP(DisasContext *s, arg_2misc *a)
3193 {
3194 static ZipFn * const fn[2][4] = {
3195 {
3196 gen_helper_neon_unzip8,
3197 gen_helper_neon_unzip16,
3198 NULL,
3199 NULL,
3200 }, {
3201 gen_helper_neon_qunzip8,
3202 gen_helper_neon_qunzip16,
3203 gen_helper_neon_qunzip32,
3204 NULL,
3205 }
3206 };
3207 return do_zip_uzp(s, a, fn[a->q][a->size]);
3208 }
3210 static bool trans_VZIP(DisasContext *s, arg_2misc *a)
3211 {
3212 static ZipFn * const fn[2][4] = {
3213 {
3214 gen_helper_neon_zip8,
3215 gen_helper_neon_zip16,
3216 NULL,
3217 NULL,
3218 }, {
3219 gen_helper_neon_qzip8,
3220 gen_helper_neon_qzip16,
3221 gen_helper_neon_qzip32,
3222 NULL,
3223 }
3224 };
3225 return do_zip_uzp(s, a, fn[a->q][a->size]);
3226 }
3228 static bool do_vmovn(DisasContext *s, arg_2misc *a,
3229 NeonGenNarrowEnvFn *narrowfn)
3230 {
3231 TCGv_i64 rm;
3232 TCGv_i32 rd0, rd1;
3234 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3235 return false;
3236 }
3238 /* UNDEF accesses to D16-D31 if they don't exist. */
3239 if (!dc_isar_feature(aa32_simd_r32, s) &&
3240 ((a->vd | a->vm) & 0x10)) {
3241 return false;
3242 }
3244 if (a->vm & 1) {
3245 return false;
3246 }
3248 if (!narrowfn) {
3249 return false;
3250 }
3252 if (!vfp_access_check(s)) {
3253 return true;
3254 }
3256 rm = tcg_temp_new_i64();
3257 rd0 = tcg_temp_new_i32();
3258 rd1 = tcg_temp_new_i32();
3260 read_neon_element64(rm, a->vm, 0, MO_64);
3261 narrowfn(rd0, cpu_env, rm);
3262 read_neon_element64(rm, a->vm, 1, MO_64);
3263 narrowfn(rd1, cpu_env, rm);
3264 write_neon_element32(rd0, a->vd, 0, MO_32);
3265 write_neon_element32(rd1, a->vd, 1, MO_32);
3266 tcg_temp_free_i32(rd0);
3267 tcg_temp_free_i32(rd1);
3268 tcg_temp_free_i64(rm);
3269 return true;
3270 }
3272 #define DO_VMOVN(INSN, FUNC) \
3273 static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
3274 { \
3275 static NeonGenNarrowEnvFn * const narrowfn[] = { \
3276 FUNC##8, \
3277 FUNC##16, \
3278 FUNC##32, \
3279 NULL, \
3280 }; \
3281 return do_vmovn(s, a, narrowfn[a->size]); \
3282 }
3284 DO_VMOVN(VMOVN, gen_neon_narrow_u)
3285 DO_VMOVN(VQMOVUN, gen_helper_neon_unarrow_sat)
3286 DO_VMOVN(VQMOVN_S, gen_helper_neon_narrow_sat_s)
3287 DO_VMOVN(VQMOVN_U, gen_helper_neon_narrow_sat_u)
3289 static bool trans_VSHLL(DisasContext *s, arg_2misc *a)
3290 {
3291 TCGv_i32 rm0, rm1;
3292 TCGv_i64 rd;
3293 static NeonGenWidenFn * const widenfns[] = {
3294 gen_helper_neon_widen_u8,
3295 gen_helper_neon_widen_u16,
3296 tcg_gen_extu_i32_i64,
3297 NULL,
3298 };
3299 NeonGenWidenFn *widenfn = widenfns[a->size];
3301 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3302 return false;
3303 }
3305 /* UNDEF accesses to D16-D31 if they don't exist. */
3306 if (!dc_isar_feature(aa32_simd_r32, s) &&
3307 ((a->vd | a->vm) & 0x10)) {
3308 return false;
3309 }
3311 if (a->vd & 1) {
3312 return false;
3313 }
3315 if (!widenfn) {
3316 return false;
3317 }
3319 if (!vfp_access_check(s)) {
3320 return true;
3321 }
3323 rd = tcg_temp_new_i64();
3324 rm0 = tcg_temp_new_i32();
3325 rm1 = tcg_temp_new_i32();
3327 read_neon_element32(rm0, a->vm, 0, MO_32);
3328 read_neon_element32(rm1, a->vm, 1, MO_32);
3330 widenfn(rd, rm0);
3331 tcg_gen_shli_i64(rd, rd, 8 << a->size);
3332 write_neon_element64(rd, a->vd, 0, MO_64);
3333 widenfn(rd, rm1);
3334 tcg_gen_shli_i64(rd, rd, 8 << a->size);
3335 write_neon_element64(rd, a->vd, 1, MO_64);
3337 tcg_temp_free_i64(rd);
3338 tcg_temp_free_i32(rm0);
3339 tcg_temp_free_i32(rm1);
3340 return true;
3341 }
3343 static bool trans_VCVT_F16_F32(DisasContext *s, arg_2misc *a)
3344 {
3345 TCGv_ptr fpst;
3346 TCGv_i32 ahp, tmp, tmp2, tmp3;
3348 if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
3349 !dc_isar_feature(aa32_fp16_spconv, s)) {
3350 return false;
3351 }
3353 /* UNDEF accesses to D16-D31 if they don't exist. */
3354 if (!dc_isar_feature(aa32_simd_r32, s) &&
3355 ((a->vd | a->vm) & 0x10)) {
3356 return false;
3357 }
3359 if ((a->vm & 1) || (a->size != 1)) {
3360 return false;
3361 }
3363 if (!vfp_access_check(s)) {
3364 return true;
3365 }
3367 fpst = fpstatus_ptr(FPST_STD);
3368 ahp = get_ahp_flag();
3369 tmp = tcg_temp_new_i32();
3370 read_neon_element32(tmp, a->vm, 0, MO_32);
3371 gen_helper_vfp_fcvt_f32_to_f16(tmp, tmp, fpst, ahp);
3372 tmp2 = tcg_temp_new_i32();
3373 read_neon_element32(tmp2, a->vm, 1, MO_32);
3374 gen_helper_vfp_fcvt_f32_to_f16(tmp2, tmp2, fpst, ahp);
3375 tcg_gen_shli_i32(tmp2, tmp2, 16);
3376 tcg_gen_or_i32(tmp2, tmp2, tmp);
3377 read_neon_element32(tmp, a->vm, 2, MO_32);
3378 gen_helper_vfp_fcvt_f32_to_f16(tmp, tmp, fpst, ahp);
3379 tmp3 = tcg_temp_new_i32();
3380 read_neon_element32(tmp3, a->vm, 3, MO_32);
3381 write_neon_element32(tmp2, a->vd, 0, MO_32);
3382 tcg_temp_free_i32(tmp2);
3383 gen_helper_vfp_fcvt_f32_to_f16(tmp3, tmp3, fpst, ahp);
3384 tcg_gen_shli_i32(tmp3, tmp3, 16);
3385 tcg_gen_or_i32(tmp3, tmp3, tmp);
3386 write_neon_element32(tmp3, a->vd, 1, MO_32);
3387 tcg_temp_free_i32(tmp3);
3388 tcg_temp_free_i32(tmp);
3389 tcg_temp_free_i32(ahp);
3390 tcg_temp_free_ptr(fpst);
3392 return true;
3393 }
3395 static bool trans_VCVT_F32_F16(DisasContext *s, arg_2misc *a)
3396 {
3397 TCGv_ptr fpst;
3398 TCGv_i32 ahp, tmp, tmp2, tmp3;
3400 if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
3401 !dc_isar_feature(aa32_fp16_spconv, s)) {
3402 return false;
3403 }
3405 /* UNDEF accesses to D16-D31 if they don't exist. */
3406 if (!dc_isar_feature(aa32_simd_r32, s) &&
3407 ((a->vd | a->vm) & 0x10)) {
3408 return false;
3409 }
3411 if ((a->vd & 1) || (a->size != 1)) {
3412 return false;
3413 }
3415 if (!vfp_access_check(s)) {
3416 return true;
3417 }
3419 fpst = fpstatus_ptr(FPST_STD);
3420 ahp = get_ahp_flag();
3421 tmp3 = tcg_temp_new_i32();
3422 tmp2 = tcg_temp_new_i32();
3423 tmp = tcg_temp_new_i32();
3424 read_neon_element32(tmp, a->vm, 0, MO_32);
3425 read_neon_element32(tmp2, a->vm, 1, MO_32);
3426 tcg_gen_ext16u_i32(tmp3, tmp);
3427 gen_helper_vfp_fcvt_f16_to_f32(tmp3, tmp3, fpst, ahp);
3428 write_neon_element32(tmp3, a->vd, 0, MO_32);
3429 tcg_gen_shri_i32(tmp, tmp, 16);
3430 gen_helper_vfp_fcvt_f16_to_f32(tmp, tmp, fpst, ahp);
3431 write_neon_element32(tmp, a->vd, 1, MO_32);
3432 tcg_temp_free_i32(tmp);
3433 tcg_gen_ext16u_i32(tmp3, tmp2);
3434 gen_helper_vfp_fcvt_f16_to_f32(tmp3, tmp3, fpst, ahp);
3435 write_neon_element32(tmp3, a->vd, 2, MO_32);
3436 tcg_temp_free_i32(tmp3);
3437 tcg_gen_shri_i32(tmp2, tmp2, 16);
3438 gen_helper_vfp_fcvt_f16_to_f32(tmp2, tmp2, fpst, ahp);
3439 write_neon_element32(tmp2, a->vd, 3, MO_32);
3440 tcg_temp_free_i32(tmp2);
3441 tcg_temp_free_i32(ahp);
3442 tcg_temp_free_ptr(fpst);
3444 return true;
3445 }
3447 static bool do_2misc_vec(DisasContext *s, arg_2misc *a, GVecGen2Fn *fn)
3448 {
3449 int vec_size = a->q ? 16 : 8;
3450 int rd_ofs = neon_full_reg_offset(a->vd);
3451 int rm_ofs = neon_full_reg_offset(a->vm);
3453 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3454 return false;
3455 }
3457 /* UNDEF accesses to D16-D31 if they don't exist. */
3458 if (!dc_isar_feature(aa32_simd_r32, s) &&
3459 ((a->vd | a->vm) & 0x10)) {
3460 return false;
3461 }
3463 if (a->size == 3) {
3464 return false;
3465 }
3467 if ((a->vd | a->vm) & a->q) {
3468 return false;
3469 }
3471 if (!vfp_access_check(s)) {
3472 return true;
3473 }
3475 fn(a->size, rd_ofs, rm_ofs, vec_size, vec_size);
3477 return true;
3478 }
3480 #define DO_2MISC_VEC(INSN, FN) \
3481 static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
3482 { \
3483 return do_2misc_vec(s, a, FN); \
3484 }
3486 DO_2MISC_VEC(VNEG, tcg_gen_gvec_neg)
3487 DO_2MISC_VEC(VABS, tcg_gen_gvec_abs)
3488 DO_2MISC_VEC(VCEQ0, gen_gvec_ceq0)
3489 DO_2MISC_VEC(VCGT0, gen_gvec_cgt0)
3490 DO_2MISC_VEC(VCLE0, gen_gvec_cle0)
3491 DO_2MISC_VEC(VCGE0, gen_gvec_cge0)
3492 DO_2MISC_VEC(VCLT0, gen_gvec_clt0)
3494 static bool trans_VMVN(DisasContext *s, arg_2misc *a)
3495 {
3496 if (a->size != 0) {
3497 return false;
3498 }
3499 return do_2misc_vec(s, a, tcg_gen_gvec_not);
3500 }
3502 #define WRAP_2M_3_OOL_FN(WRAPNAME, FUNC, DATA) \
3503 static void WRAPNAME(unsigned vece, uint32_t rd_ofs, \
3504 uint32_t rm_ofs, uint32_t oprsz, \
3505 uint32_t maxsz) \
3506 { \
3507 tcg_gen_gvec_3_ool(rd_ofs, rd_ofs, rm_ofs, oprsz, maxsz, \
3508 DATA, FUNC); \
3509 }
3511 #define WRAP_2M_2_OOL_FN(WRAPNAME, FUNC, DATA) \
3512 static void WRAPNAME(unsigned vece, uint32_t rd_ofs, \
3513 uint32_t rm_ofs, uint32_t oprsz, \
3514 uint32_t maxsz) \
3515 { \
3516 tcg_gen_gvec_2_ool(rd_ofs, rm_ofs, oprsz, maxsz, DATA, FUNC); \
3517 }
3519 WRAP_2M_3_OOL_FN(gen_AESE, gen_helper_crypto_aese, 0)
3520 WRAP_2M_3_OOL_FN(gen_AESD, gen_helper_crypto_aese, 1)
3521 WRAP_2M_2_OOL_FN(gen_AESMC, gen_helper_crypto_aesmc, 0)
3522 WRAP_2M_2_OOL_FN(gen_AESIMC, gen_helper_crypto_aesmc, 1)
3523 WRAP_2M_2_OOL_FN(gen_SHA1H, gen_helper_crypto_sha1h, 0)
3524 WRAP_2M_2_OOL_FN(gen_SHA1SU1, gen_helper_crypto_sha1su1, 0)
3525 WRAP_2M_2_OOL_FN(gen_SHA256SU0, gen_helper_crypto_sha256su0, 0)
3527 #define DO_2M_CRYPTO(INSN, FEATURE, SIZE) \
3528 static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
3529 { \
3530 if (!dc_isar_feature(FEATURE, s) || a->size != SIZE) { \
3531 return false; \
3532 } \
3533 return do_2misc_vec(s, a, gen_##INSN); \
3534 }
3536 DO_2M_CRYPTO(AESE, aa32_aes, 0)
3537 DO_2M_CRYPTO(AESD, aa32_aes, 0)
3538 DO_2M_CRYPTO(AESMC, aa32_aes, 0)
3539 DO_2M_CRYPTO(AESIMC, aa32_aes, 0)
3540 DO_2M_CRYPTO(SHA1H, aa32_sha1, 2)
3541 DO_2M_CRYPTO(SHA1SU1, aa32_sha1, 2)
3542 DO_2M_CRYPTO(SHA256SU0, aa32_sha2, 2)
3544 static bool do_2misc(DisasContext *s, arg_2misc *a, NeonGenOneOpFn *fn)
3545 {
3546 TCGv_i32 tmp;
3547 int pass;
3549 /* Handle a 2-reg-misc operation by iterating 32 bits at a time */
3550 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3551 return false;
3552 }
3554 /* UNDEF accesses to D16-D31 if they don't exist. */
3555 if (!dc_isar_feature(aa32_simd_r32, s) &&
3556 ((a->vd | a->vm) & 0x10)) {
3557 return false;
3558 }
3560 if (!fn) {
3561 return false;
3562 }
3564 if ((a->vd | a->vm) & a->q) {
3565 return false;
3566 }
3568 if (!vfp_access_check(s)) {
3569 return true;
3570 }
3572 tmp = tcg_temp_new_i32();
3573 for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
3574 read_neon_element32(tmp, a->vm, pass, MO_32);
3575 fn(tmp, tmp);
3576 write_neon_element32(tmp, a->vd, pass, MO_32);
3577 }
3578 tcg_temp_free_i32(tmp);
3580 return true;
3581 }
3583 static bool trans_VREV32(DisasContext *s, arg_2misc *a)
3584 {
3585 static NeonGenOneOpFn * const fn[] = {
3586 tcg_gen_bswap32_i32,
3587 gen_swap_half,
3588 NULL,
3589 NULL,
3590 };
3591 return do_2misc(s, a, fn[a->size]);
3592 }
3594 static bool trans_VREV16(DisasContext *s, arg_2misc *a)
3595 {
3596 if (a->size != 0) {
3597 return false;
3598 }
3599 return do_2misc(s, a, gen_rev16);
3600 }
3602 static bool trans_VCLS(DisasContext *s, arg_2misc *a)
3603 {
3604 static NeonGenOneOpFn * const fn[] = {
3605 gen_helper_neon_cls_s8,
3606 gen_helper_neon_cls_s16,
3607 gen_helper_neon_cls_s32,
3608 NULL,
3609 };
3610 return do_2misc(s, a, fn[a->size]);
3611 }
3613 static void do_VCLZ_32(TCGv_i32 rd, TCGv_i32 rm)
3614 {
3615 tcg_gen_clzi_i32(rd, rm, 32);
3616 }
3618 static bool trans_VCLZ(DisasContext *s, arg_2misc *a)
3619 {
3620 static NeonGenOneOpFn * const fn[] = {
3621 gen_helper_neon_clz_u8,
3622 gen_helper_neon_clz_u16,
3623 do_VCLZ_32,
3624 NULL,
3625 };
3626 return do_2misc(s, a, fn[a->size]);
3627 }
3629 static bool trans_VCNT(DisasContext *s, arg_2misc *a)
3630 {
3631 if (a->size != 0) {
3632 return false;
3633 }
3634 return do_2misc(s, a, gen_helper_neon_cnt_u8);
3635 }
3637 static void gen_VABS_F(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs,
3638 uint32_t oprsz, uint32_t maxsz)
3639 {
3640 tcg_gen_gvec_andi(vece, rd_ofs, rm_ofs,
3641 vece == MO_16 ? 0x7fff : 0x7fffffff,
3642 oprsz, maxsz);
3643 }
3645 static bool trans_VABS_F(DisasContext *s, arg_2misc *a)
3646 {
3647 if (a->size == MO_16) {
3648 if (!dc_isar_feature(aa32_fp16_arith, s)) {
3649 return false;
3650 }
3651 } else if (a->size != MO_32) {
3652 return false;
3653 }
3654 return do_2misc_vec(s, a, gen_VABS_F);
3655 }
3657 static void gen_VNEG_F(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs,
3658 uint32_t oprsz, uint32_t maxsz)
3659 {
3660 tcg_gen_gvec_xori(vece, rd_ofs, rm_ofs,
3661 vece == MO_16 ? 0x8000 : 0x80000000,
3662 oprsz, maxsz);
3663 }
3665 static bool trans_VNEG_F(DisasContext *s, arg_2misc *a)
3666 {
3667 if (a->size == MO_16) {
3668 if (!dc_isar_feature(aa32_fp16_arith, s)) {
3669 return false;
3670 }
3671 } else if (a->size != MO_32) {
3672 return false;
3673 }
3674 return do_2misc_vec(s, a, gen_VNEG_F);
3675 }
3677 static bool trans_VRECPE(DisasContext *s, arg_2misc *a)
3678 {
3679 if (a->size != 2) {
3680 return false;
3681 }
3682 return do_2misc(s, a, gen_helper_recpe_u32);
3683 }
3685 static bool trans_VRSQRTE(DisasContext *s, arg_2misc *a)
3686 {
3687 if (a->size != 2) {
3688 return false;
3689 }
3690 return do_2misc(s, a, gen_helper_rsqrte_u32);
3691 }
3693 #define WRAP_1OP_ENV_FN(WRAPNAME, FUNC) \
3694 static void WRAPNAME(TCGv_i32 d, TCGv_i32 m) \
3695 { \
3696 FUNC(d, cpu_env, m); \
3697 }
3699 WRAP_1OP_ENV_FN(gen_VQABS_s8, gen_helper_neon_qabs_s8)
3700 WRAP_1OP_ENV_FN(gen_VQABS_s16, gen_helper_neon_qabs_s16)
3701 WRAP_1OP_ENV_FN(gen_VQABS_s32, gen_helper_neon_qabs_s32)
3702 WRAP_1OP_ENV_FN(gen_VQNEG_s8, gen_helper_neon_qneg_s8)
3703 WRAP_1OP_ENV_FN(gen_VQNEG_s16, gen_helper_neon_qneg_s16)
3704 WRAP_1OP_ENV_FN(gen_VQNEG_s32, gen_helper_neon_qneg_s32)
3706 static bool trans_VQABS(DisasContext *s, arg_2misc *a)
3707 {
3708 static NeonGenOneOpFn * const fn[] = {
3709 gen_VQABS_s8,
3710 gen_VQABS_s16,
3711 gen_VQABS_s32,
3712 NULL,
3713 };
3714 return do_2misc(s, a, fn[a->size]);
3715 }
3717 static bool trans_VQNEG(DisasContext *s, arg_2misc *a)
3718 {
3719 static NeonGenOneOpFn * const fn[] = {
3720 gen_VQNEG_s8,
3721 gen_VQNEG_s16,
3722 gen_VQNEG_s32,
3723 NULL,
3724 };
3725 return do_2misc(s, a, fn[a->size]);
3726 }
3728 #define DO_2MISC_FP_VEC(INSN, HFUNC, SFUNC) \
3729 static void gen_##INSN(unsigned vece, uint32_t rd_ofs, \
3730 uint32_t rm_ofs, \
3731 uint32_t oprsz, uint32_t maxsz) \
3732 { \
3733 static gen_helper_gvec_2_ptr * const fns[4] = { \
3734 NULL, HFUNC, SFUNC, NULL, \
3735 }; \
3736 TCGv_ptr fpst; \
3737 fpst = fpstatus_ptr(vece == MO_16 ? FPST_STD_F16 : FPST_STD); \
3738 tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, oprsz, maxsz, 0, \
3739 fns[vece]); \
3740 tcg_temp_free_ptr(fpst); \
3741 } \
3742 static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
3743 { \
3744 if (a->size == MO_16) { \
3745 if (!dc_isar_feature(aa32_fp16_arith, s)) { \
3746 return false; \
3747 } \
3748 } else if (a->size != MO_32) { \
3749 return false; \
3750 } \
3751 return do_2misc_vec(s, a, gen_##INSN); \
3752 }
3754 DO_2MISC_FP_VEC(VRECPE_F, gen_helper_gvec_frecpe_h, gen_helper_gvec_frecpe_s)
3755 DO_2MISC_FP_VEC(VRSQRTE_F, gen_helper_gvec_frsqrte_h, gen_helper_gvec_frsqrte_s)
3756 DO_2MISC_FP_VEC(VCGT0_F, gen_helper_gvec_fcgt0_h, gen_helper_gvec_fcgt0_s)
3757 DO_2MISC_FP_VEC(VCGE0_F, gen_helper_gvec_fcge0_h, gen_helper_gvec_fcge0_s)
3758 DO_2MISC_FP_VEC(VCEQ0_F, gen_helper_gvec_fceq0_h, gen_helper_gvec_fceq0_s)
3759 DO_2MISC_FP_VEC(VCLT0_F, gen_helper_gvec_fclt0_h, gen_helper_gvec_fclt0_s)
3760 DO_2MISC_FP_VEC(VCLE0_F, gen_helper_gvec_fcle0_h, gen_helper_gvec_fcle0_s)
3761 DO_2MISC_FP_VEC(VCVT_FS, gen_helper_gvec_sstoh, gen_helper_gvec_sitos)
3762 DO_2MISC_FP_VEC(VCVT_FU, gen_helper_gvec_ustoh, gen_helper_gvec_uitos)
3763 DO_2MISC_FP_VEC(VCVT_SF, gen_helper_gvec_tosszh, gen_helper_gvec_tosizs)
3764 DO_2MISC_FP_VEC(VCVT_UF, gen_helper_gvec_touszh, gen_helper_gvec_touizs)
3766 DO_2MISC_FP_VEC(VRINTX_impl, gen_helper_gvec_vrintx_h, gen_helper_gvec_vrintx_s)
3768 static bool trans_VRINTX(DisasContext *s, arg_2misc *a)
3769 {
3770 if (!arm_dc_feature(s, ARM_FEATURE_V8)) {
3771 return false;
3772 }
3773 return trans_VRINTX_impl(s, a);
3774 }
3776 #define DO_VEC_RMODE(INSN, RMODE, OP) \
3777 static void gen_##INSN(unsigned vece, uint32_t rd_ofs, \
3778 uint32_t rm_ofs, \
3779 uint32_t oprsz, uint32_t maxsz) \
3780 { \
3781 static gen_helper_gvec_2_ptr * const fns[4] = { \
3782 NULL, \
3783 gen_helper_gvec_##OP##h, \
3784 gen_helper_gvec_##OP##s, \
3785 NULL, \
3786 }; \
3787 TCGv_ptr fpst; \
3788 fpst = fpstatus_ptr(vece == 1 ? FPST_STD_F16 : FPST_STD); \
3789 tcg_gen_gvec_2_ptr(rd_ofs, rm_ofs, fpst, oprsz, maxsz, \
3790 arm_rmode_to_sf(RMODE), fns[vece]); \
3791 tcg_temp_free_ptr(fpst); \
3792 } \
3793 static bool trans_##INSN(DisasContext *s, arg_2misc *a) \
3794 { \
3795 if (!arm_dc_feature(s, ARM_FEATURE_V8)) { \
3796 return false; \
3797 } \
3798 if (a->size == MO_16) { \
3799 if (!dc_isar_feature(aa32_fp16_arith, s)) { \
3800 return false; \
3801 } \
3802 } else if (a->size != MO_32) { \
3803 return false; \
3804 } \
3805 return do_2misc_vec(s, a, gen_##INSN); \
3806 }
3808 DO_VEC_RMODE(VCVTAU, FPROUNDING_TIEAWAY, vcvt_rm_u)
3809 DO_VEC_RMODE(VCVTAS, FPROUNDING_TIEAWAY, vcvt_rm_s)
3810 DO_VEC_RMODE(VCVTNU, FPROUNDING_TIEEVEN, vcvt_rm_u)
3811 DO_VEC_RMODE(VCVTNS, FPROUNDING_TIEEVEN, vcvt_rm_s)
3812 DO_VEC_RMODE(VCVTPU, FPROUNDING_POSINF, vcvt_rm_u)
3813 DO_VEC_RMODE(VCVTPS, FPROUNDING_POSINF, vcvt_rm_s)
3814 DO_VEC_RMODE(VCVTMU, FPROUNDING_NEGINF, vcvt_rm_u)
3815 DO_VEC_RMODE(VCVTMS, FPROUNDING_NEGINF, vcvt_rm_s)
3817 DO_VEC_RMODE(VRINTN, FPROUNDING_TIEEVEN, vrint_rm_)
3818 DO_VEC_RMODE(VRINTA, FPROUNDING_TIEAWAY, vrint_rm_)
3819 DO_VEC_RMODE(VRINTZ, FPROUNDING_ZERO, vrint_rm_)
3820 DO_VEC_RMODE(VRINTM, FPROUNDING_NEGINF, vrint_rm_)
3821 DO_VEC_RMODE(VRINTP, FPROUNDING_POSINF, vrint_rm_)
3823 static bool trans_VSWP(DisasContext *s, arg_2misc *a)
3824 {
3825 TCGv_i64 rm, rd;
3826 int pass;
3828 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3829 return false;
3830 }
3832 /* UNDEF accesses to D16-D31 if they don't exist. */
3833 if (!dc_isar_feature(aa32_simd_r32, s) &&
3834 ((a->vd | a->vm) & 0x10)) {
3835 return false;
3836 }
3838 if (a->size != 0) {
3839 return false;
3840 }
3842 if ((a->vd | a->vm) & a->q) {
3843 return false;
3844 }
3846 if (!vfp_access_check(s)) {
3847 return true;
3848 }
3850 rm = tcg_temp_new_i64();
3851 rd = tcg_temp_new_i64();
3852 for (pass = 0; pass < (a->q ? 2 : 1); pass++) {
3853 read_neon_element64(rm, a->vm, pass, MO_64);
3854 read_neon_element64(rd, a->vd, pass, MO_64);
3855 write_neon_element64(rm, a->vd, pass, MO_64);
3856 write_neon_element64(rd, a->vm, pass, MO_64);
3857 }
3858 tcg_temp_free_i64(rm);
3859 tcg_temp_free_i64(rd);
3861 return true;
3862 }
3863 static void gen_neon_trn_u8(TCGv_i32 t0, TCGv_i32 t1)
3864 {
3865 TCGv_i32 rd, tmp;
3867 rd = tcg_temp_new_i32();
3868 tmp = tcg_temp_new_i32();
3870 tcg_gen_shli_i32(rd, t0, 8);
3871 tcg_gen_andi_i32(rd, rd, 0xff00ff00);
3872 tcg_gen_andi_i32(tmp, t1, 0x00ff00ff);
3873 tcg_gen_or_i32(rd, rd, tmp);
3875 tcg_gen_shri_i32(t1, t1, 8);
3876 tcg_gen_andi_i32(t1, t1, 0x00ff00ff);
3877 tcg_gen_andi_i32(tmp, t0, 0xff00ff00);
3878 tcg_gen_or_i32(t1, t1, tmp);
3879 tcg_gen_mov_i32(t0, rd);
3881 tcg_temp_free_i32(tmp);
3882 tcg_temp_free_i32(rd);
3883 }
3885 static void gen_neon_trn_u16(TCGv_i32 t0, TCGv_i32 t1)
3886 {
3887 TCGv_i32 rd, tmp;
3889 rd = tcg_temp_new_i32();
3890 tmp = tcg_temp_new_i32();
3892 tcg_gen_shli_i32(rd, t0, 16);
3893 tcg_gen_andi_i32(tmp, t1, 0xffff);
3894 tcg_gen_or_i32(rd, rd, tmp);
3895 tcg_gen_shri_i32(t1, t1, 16);
3896 tcg_gen_andi_i32(tmp, t0, 0xffff0000);
3897 tcg_gen_or_i32(t1, t1, tmp);
3898 tcg_gen_mov_i32(t0, rd);
3900 tcg_temp_free_i32(tmp);
3901 tcg_temp_free_i32(rd);
3902 }
3904 static bool trans_VTRN(DisasContext *s, arg_2misc *a)
3905 {
3906 TCGv_i32 tmp, tmp2;
3907 int pass;
3909 if (!arm_dc_feature(s, ARM_FEATURE_NEON)) {
3910 return false;
3911 }
3913 /* UNDEF accesses to D16-D31 if they don't exist. */
3914 if (!dc_isar_feature(aa32_simd_r32, s) &&
3915 ((a->vd | a->vm) & 0x10)) {
3916 return false;
3917 }
3919 if ((a->vd | a->vm) & a->q) {
3920 return false;
3921 }
3923 if (a->size == 3) {
3924 return false;
3925 }
3927 if (!vfp_access_check(s)) {
3928 return true;
3929 }
3931 tmp = tcg_temp_new_i32();
3932 tmp2 = tcg_temp_new_i32();
3933 if (a->size == MO_32) {
3934 for (pass = 0; pass < (a->q ? 4 : 2); pass += 2) {
3935 read_neon_element32(tmp, a->vm, pass, MO_32);
3936 read_neon_element32(tmp2, a->vd, pass + 1, MO_32);
3937 write_neon_element32(tmp2, a->vm, pass, MO_32);
3938 write_neon_element32(tmp, a->vd, pass + 1, MO_32);
3939 }
3940 } else {
3941 for (pass = 0; pass < (a->q ? 4 : 2); pass++) {
3942 read_neon_element32(tmp, a->vm, pass, MO_32);
3943 read_neon_element32(tmp2, a->vd, pass, MO_32);
3944 if (a->size == MO_8) {
3945 gen_neon_trn_u8(tmp, tmp2);
3946 } else {
3947 gen_neon_trn_u16(tmp, tmp2);
3948 }
3949 write_neon_element32(tmp2, a->vm, pass, MO_32);
3950 write_neon_element32(tmp, a->vd, pass, MO_32);
3951 }
3952 }
3953 tcg_temp_free_i32(tmp);
3954 tcg_temp_free_i32(tmp2);
3955 return true;
3956 }