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json-lexer: Handle missing escapes
[qemu/ar7.git] / target-ppc / op_helper.c
blob3c3aa60bc3635ca71e7536ac3060aae9c72b9f41
1 /*
2 * PowerPC emulation helpers for qemu.
3 *
4 * Copyright (c) 2003-2007 Jocelyn Mayer
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #include <string.h>
20 #include "exec.h"
21 #include "host-utils.h"
22 #include "helper.h"
23
24 #include "helper_regs.h"
25
26 //#define DEBUG_OP
27 //#define DEBUG_EXCEPTIONS
28 //#define DEBUG_SOFTWARE_TLB
29
30 #ifdef DEBUG_SOFTWARE_TLB
31 # define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
32 #else
33 # define LOG_SWTLB(...) do { } while (0)
34 #endif
35
36
37 /*****************************************************************************/
38 /* Exceptions processing helpers */
39
40 void helper_raise_exception_err (uint32_t exception, uint32_t error_code)
41 {
42 #if 0
43 printf("Raise exception %3x code : %d\n", exception, error_code);
44 #endif
45 env->exception_index = exception;
46 env->error_code = error_code;
47 cpu_loop_exit();
48 }
49
50 void helper_raise_exception (uint32_t exception)
51 {
52 helper_raise_exception_err(exception, 0);
53 }
54
55 /*****************************************************************************/
56 /* SPR accesses */
57 void helper_load_dump_spr (uint32_t sprn)
58 {
59 qemu_log("Read SPR %d %03x => " TARGET_FMT_lx "\n", sprn, sprn,
60 env->spr[sprn]);
61 }
62
63 void helper_store_dump_spr (uint32_t sprn)
64 {
65 qemu_log("Write SPR %d %03x <= " TARGET_FMT_lx "\n", sprn, sprn,
66 env->spr[sprn]);
67 }
68
69 target_ulong helper_load_tbl (void)
70 {
71 return (target_ulong)cpu_ppc_load_tbl(env);
72 }
73
74 target_ulong helper_load_tbu (void)
75 {
76 return cpu_ppc_load_tbu(env);
77 }
78
79 target_ulong helper_load_atbl (void)
80 {
81 return (target_ulong)cpu_ppc_load_atbl(env);
82 }
83
84 target_ulong helper_load_atbu (void)
85 {
86 return cpu_ppc_load_atbu(env);
87 }
88
89 target_ulong helper_load_601_rtcl (void)
90 {
91 return cpu_ppc601_load_rtcl(env);
92 }
93
94 target_ulong helper_load_601_rtcu (void)
95 {
96 return cpu_ppc601_load_rtcu(env);
97 }
98
99 #if !defined(CONFIG_USER_ONLY)
100 #if defined (TARGET_PPC64)
101 void helper_store_asr (target_ulong val)
102 {
103 ppc_store_asr(env, val);
104 }
105 #endif
106
107 void helper_store_sdr1 (target_ulong val)
108 {
109 ppc_store_sdr1(env, val);
110 }
111
112 void helper_store_tbl (target_ulong val)
113 {
114 cpu_ppc_store_tbl(env, val);
115 }
116
117 void helper_store_tbu (target_ulong val)
118 {
119 cpu_ppc_store_tbu(env, val);
120 }
121
122 void helper_store_atbl (target_ulong val)
123 {
124 cpu_ppc_store_atbl(env, val);
125 }
126
127 void helper_store_atbu (target_ulong val)
128 {
129 cpu_ppc_store_atbu(env, val);
130 }
131
132 void helper_store_601_rtcl (target_ulong val)
133 {
134 cpu_ppc601_store_rtcl(env, val);
135 }
136
137 void helper_store_601_rtcu (target_ulong val)
138 {
139 cpu_ppc601_store_rtcu(env, val);
140 }
141
142 target_ulong helper_load_decr (void)
143 {
144 return cpu_ppc_load_decr(env);
145 }
146
147 void helper_store_decr (target_ulong val)
148 {
149 cpu_ppc_store_decr(env, val);
150 }
151
152 void helper_store_hid0_601 (target_ulong val)
153 {
154 target_ulong hid0;
155
156 hid0 = env->spr[SPR_HID0];
157 if ((val ^ hid0) & 0x00000008) {
158 /* Change current endianness */
159 env->hflags &= ~(1 << MSR_LE);
160 env->hflags_nmsr &= ~(1 << MSR_LE);
161 env->hflags_nmsr |= (1 << MSR_LE) & (((val >> 3) & 1) << MSR_LE);
162 env->hflags |= env->hflags_nmsr;
163 qemu_log("%s: set endianness to %c => " TARGET_FMT_lx "\n", __func__,
164 val & 0x8 ? 'l' : 'b', env->hflags);
165 }
166 env->spr[SPR_HID0] = (uint32_t)val;
167 }
168
169 void helper_store_403_pbr (uint32_t num, target_ulong value)
170 {
171 if (likely(env->pb[num] != value)) {
172 env->pb[num] = value;
173 /* Should be optimized */
174 tlb_flush(env, 1);
175 }
176 }
177
178 target_ulong helper_load_40x_pit (void)
179 {
180 return load_40x_pit(env);
181 }
182
183 void helper_store_40x_pit (target_ulong val)
184 {
185 store_40x_pit(env, val);
186 }
187
188 void helper_store_40x_dbcr0 (target_ulong val)
189 {
190 store_40x_dbcr0(env, val);
191 }
192
193 void helper_store_40x_sler (target_ulong val)
194 {
195 store_40x_sler(env, val);
196 }
197
198 void helper_store_booke_tcr (target_ulong val)
199 {
200 store_booke_tcr(env, val);
201 }
202
203 void helper_store_booke_tsr (target_ulong val)
204 {
205 store_booke_tsr(env, val);
206 }
207
208 void helper_store_ibatu (uint32_t nr, target_ulong val)
209 {
210 ppc_store_ibatu(env, nr, val);
211 }
212
213 void helper_store_ibatl (uint32_t nr, target_ulong val)
214 {
215 ppc_store_ibatl(env, nr, val);
216 }
217
218 void helper_store_dbatu (uint32_t nr, target_ulong val)
219 {
220 ppc_store_dbatu(env, nr, val);
221 }
222
223 void helper_store_dbatl (uint32_t nr, target_ulong val)
224 {
225 ppc_store_dbatl(env, nr, val);
226 }
227
228 void helper_store_601_batl (uint32_t nr, target_ulong val)
229 {
230 ppc_store_ibatl_601(env, nr, val);
231 }
232
233 void helper_store_601_batu (uint32_t nr, target_ulong val)
234 {
235 ppc_store_ibatu_601(env, nr, val);
236 }
237 #endif
238
239 /*****************************************************************************/
240 /* Memory load and stores */
241
242 static inline target_ulong addr_add(target_ulong addr, target_long arg)
243 {
244 #if defined(TARGET_PPC64)
245 if (!msr_sf)
246 return (uint32_t)(addr + arg);
247 else
248 #endif
249 return addr + arg;
250 }
251
252 void helper_lmw (target_ulong addr, uint32_t reg)
253 {
254 for (; reg < 32; reg++) {
255 if (msr_le)
256 env->gpr[reg] = bswap32(ldl(addr));
257 else
258 env->gpr[reg] = ldl(addr);
259 addr = addr_add(addr, 4);
260 }
261 }
262
263 void helper_stmw (target_ulong addr, uint32_t reg)
264 {
265 for (; reg < 32; reg++) {
266 if (msr_le)
267 stl(addr, bswap32((uint32_t)env->gpr[reg]));
268 else
269 stl(addr, (uint32_t)env->gpr[reg]);
270 addr = addr_add(addr, 4);
271 }
272 }
273
274 void helper_lsw(target_ulong addr, uint32_t nb, uint32_t reg)
275 {
276 int sh;
277 for (; nb > 3; nb -= 4) {
278 env->gpr[reg] = ldl(addr);
279 reg = (reg + 1) % 32;
280 addr = addr_add(addr, 4);
281 }
282 if (unlikely(nb > 0)) {
283 env->gpr[reg] = 0;
284 for (sh = 24; nb > 0; nb--, sh -= 8) {
285 env->gpr[reg] |= ldub(addr) << sh;
286 addr = addr_add(addr, 1);
287 }
288 }
289 }
290 /* PPC32 specification says we must generate an exception if
291 * rA is in the range of registers to be loaded.
292 * In an other hand, IBM says this is valid, but rA won't be loaded.
293 * For now, I'll follow the spec...
294 */
295 void helper_lswx(target_ulong addr, uint32_t reg, uint32_t ra, uint32_t rb)
296 {
297 if (likely(xer_bc != 0)) {
298 if (unlikely((ra != 0 && reg < ra && (reg + xer_bc) > ra) ||
299 (reg < rb && (reg + xer_bc) > rb))) {
300 helper_raise_exception_err(POWERPC_EXCP_PROGRAM,
301 POWERPC_EXCP_INVAL |
302 POWERPC_EXCP_INVAL_LSWX);
303 } else {
304 helper_lsw(addr, xer_bc, reg);
305 }
306 }
307 }
308
309 void helper_stsw(target_ulong addr, uint32_t nb, uint32_t reg)
310 {
311 int sh;
312 for (; nb > 3; nb -= 4) {
313 stl(addr, env->gpr[reg]);
314 reg = (reg + 1) % 32;
315 addr = addr_add(addr, 4);
316 }
317 if (unlikely(nb > 0)) {
318 for (sh = 24; nb > 0; nb--, sh -= 8) {
319 stb(addr, (env->gpr[reg] >> sh) & 0xFF);
320 addr = addr_add(addr, 1);
321 }
322 }
323 }
324
325 static void do_dcbz(target_ulong addr, int dcache_line_size)
326 {
327 addr &= ~(dcache_line_size - 1);
328 int i;
329 for (i = 0 ; i < dcache_line_size ; i += 4) {
330 stl(addr + i , 0);
331 }
332 if (env->reserve_addr == addr)
333 env->reserve_addr = (target_ulong)-1ULL;
334 }
335
336 void helper_dcbz(target_ulong addr)
337 {
338 do_dcbz(addr, env->dcache_line_size);
339 }
340
341 void helper_dcbz_970(target_ulong addr)
342 {
343 if (((env->spr[SPR_970_HID5] >> 7) & 0x3) == 1)
344 do_dcbz(addr, 32);
345 else
346 do_dcbz(addr, env->dcache_line_size);
347 }
348
349 void helper_icbi(target_ulong addr)
350 {
351 uint32_t tmp;
352
353 addr &= ~(env->dcache_line_size - 1);
354 /* Invalidate one cache line :
355 * PowerPC specification says this is to be treated like a load
356 * (not a fetch) by the MMU. To be sure it will be so,
357 * do the load "by hand".
358 */
359 tmp = ldl(addr);
360 tb_invalidate_page_range(addr, addr + env->icache_line_size);
361 }
362
363 // XXX: to be tested
364 target_ulong helper_lscbx (target_ulong addr, uint32_t reg, uint32_t ra, uint32_t rb)
365 {
366 int i, c, d;
367 d = 24;
368 for (i = 0; i < xer_bc; i++) {
369 c = ldub(addr);
370 addr = addr_add(addr, 1);
371 /* ra (if not 0) and rb are never modified */
372 if (likely(reg != rb && (ra == 0 || reg != ra))) {
373 env->gpr[reg] = (env->gpr[reg] & ~(0xFF << d)) | (c << d);
374 }
375 if (unlikely(c == xer_cmp))
376 break;
377 if (likely(d != 0)) {
378 d -= 8;
379 } else {
380 d = 24;
381 reg++;
382 reg = reg & 0x1F;
383 }
384 }
385 return i;
386 }
387
388 /*****************************************************************************/
389 /* Fixed point operations helpers */
390 #if defined(TARGET_PPC64)
391
392 /* multiply high word */
393 uint64_t helper_mulhd (uint64_t arg1, uint64_t arg2)
394 {
395 uint64_t tl, th;
396
397 muls64(&tl, &th, arg1, arg2);
398 return th;
399 }
400
401 /* multiply high word unsigned */
402 uint64_t helper_mulhdu (uint64_t arg1, uint64_t arg2)
403 {
404 uint64_t tl, th;
405
406 mulu64(&tl, &th, arg1, arg2);
407 return th;
408 }
409
410 uint64_t helper_mulldo (uint64_t arg1, uint64_t arg2)
411 {
412 int64_t th;
413 uint64_t tl;
414
415 muls64(&tl, (uint64_t *)&th, arg1, arg2);
416 /* If th != 0 && th != -1, then we had an overflow */
417 if (likely((uint64_t)(th + 1) <= 1)) {
418 env->xer &= ~(1 << XER_OV);
419 } else {
420 env->xer |= (1 << XER_OV) | (1 << XER_SO);
421 }
422 return (int64_t)tl;
423 }
424 #endif
425
426 target_ulong helper_cntlzw (target_ulong t)
427 {
428 return clz32(t);
429 }
430
431 #if defined(TARGET_PPC64)
432 target_ulong helper_cntlzd (target_ulong t)
433 {
434 return clz64(t);
435 }
436 #endif
437
438 /* shift right arithmetic helper */
439 target_ulong helper_sraw (target_ulong value, target_ulong shift)
440 {
441 int32_t ret;
442
443 if (likely(!(shift & 0x20))) {
444 if (likely((uint32_t)shift != 0)) {
445 shift &= 0x1f;
446 ret = (int32_t)value >> shift;
447 if (likely(ret >= 0 || (value & ((1 << shift) - 1)) == 0)) {
448 env->xer &= ~(1 << XER_CA);
449 } else {
450 env->xer |= (1 << XER_CA);
451 }
452 } else {
453 ret = (int32_t)value;
454 env->xer &= ~(1 << XER_CA);
455 }
456 } else {
457 ret = (int32_t)value >> 31;
458 if (ret) {
459 env->xer |= (1 << XER_CA);
460 } else {
461 env->xer &= ~(1 << XER_CA);
462 }
463 }
464 return (target_long)ret;
465 }
466
467 #if defined(TARGET_PPC64)
468 target_ulong helper_srad (target_ulong value, target_ulong shift)
469 {
470 int64_t ret;
471
472 if (likely(!(shift & 0x40))) {
473 if (likely((uint64_t)shift != 0)) {
474 shift &= 0x3f;
475 ret = (int64_t)value >> shift;
476 if (likely(ret >= 0 || (value & ((1 << shift) - 1)) == 0)) {
477 env->xer &= ~(1 << XER_CA);
478 } else {
479 env->xer |= (1 << XER_CA);
480 }
481 } else {
482 ret = (int64_t)value;
483 env->xer &= ~(1 << XER_CA);
484 }
485 } else {
486 ret = (int64_t)value >> 63;
487 if (ret) {
488 env->xer |= (1 << XER_CA);
489 } else {
490 env->xer &= ~(1 << XER_CA);
491 }
492 }
493 return ret;
494 }
495 #endif
496
497 target_ulong helper_popcntb (target_ulong val)
498 {
499 val = (val & 0x55555555) + ((val >> 1) & 0x55555555);
500 val = (val & 0x33333333) + ((val >> 2) & 0x33333333);
501 val = (val & 0x0f0f0f0f) + ((val >> 4) & 0x0f0f0f0f);
502 return val;
503 }
504
505 #if defined(TARGET_PPC64)
506 target_ulong helper_popcntb_64 (target_ulong val)
507 {
508 val = (val & 0x5555555555555555ULL) + ((val >> 1) & 0x5555555555555555ULL);
509 val = (val & 0x3333333333333333ULL) + ((val >> 2) & 0x3333333333333333ULL);
510 val = (val & 0x0f0f0f0f0f0f0f0fULL) + ((val >> 4) & 0x0f0f0f0f0f0f0f0fULL);
511 return val;
512 }
513 #endif
514
515 /*****************************************************************************/
516 /* Floating point operations helpers */
517 uint64_t helper_float32_to_float64(uint32_t arg)
518 {
519 CPU_FloatU f;
520 CPU_DoubleU d;
521 f.l = arg;
522 d.d = float32_to_float64(f.f, &env->fp_status);
523 return d.ll;
524 }
525
526 uint32_t helper_float64_to_float32(uint64_t arg)
527 {
528 CPU_FloatU f;
529 CPU_DoubleU d;
530 d.ll = arg;
531 f.f = float64_to_float32(d.d, &env->fp_status);
532 return f.l;
533 }
534
535 static inline int isden(float64 d)
536 {
537 CPU_DoubleU u;
538
539 u.d = d;
540
541 return ((u.ll >> 52) & 0x7FF) == 0;
542 }
543
544 uint32_t helper_compute_fprf (uint64_t arg, uint32_t set_fprf)
545 {
546 CPU_DoubleU farg;
547 int isneg;
548 int ret;
549 farg.ll = arg;
550 isneg = float64_is_neg(farg.d);
551 if (unlikely(float64_is_nan(farg.d))) {
552 if (float64_is_signaling_nan(farg.d)) {
553 /* Signaling NaN: flags are undefined */
554 ret = 0x00;
555 } else {
556 /* Quiet NaN */
557 ret = 0x11;
558 }
559 } else if (unlikely(float64_is_infinity(farg.d))) {
560 /* +/- infinity */
561 if (isneg)
562 ret = 0x09;
563 else
564 ret = 0x05;
565 } else {
566 if (float64_is_zero(farg.d)) {
567 /* +/- zero */
568 if (isneg)
569 ret = 0x12;
570 else
571 ret = 0x02;
572 } else {
573 if (isden(farg.d)) {
574 /* Denormalized numbers */
575 ret = 0x10;
576 } else {
577 /* Normalized numbers */
578 ret = 0x00;
579 }
580 if (isneg) {
581 ret |= 0x08;
582 } else {
583 ret |= 0x04;
584 }
585 }
586 }
587 if (set_fprf) {
588 /* We update FPSCR_FPRF */
589 env->fpscr &= ~(0x1F << FPSCR_FPRF);
590 env->fpscr |= ret << FPSCR_FPRF;
591 }
592 /* We just need fpcc to update Rc1 */
593 return ret & 0xF;
594 }
595
596 /* Floating-point invalid operations exception */
597 static inline uint64_t fload_invalid_op_excp(int op)
598 {
599 uint64_t ret = 0;
600 int ve;
601
602 ve = fpscr_ve;
603 switch (op) {
604 case POWERPC_EXCP_FP_VXSNAN:
605 env->fpscr |= 1 << FPSCR_VXSNAN;
606 break;
607 case POWERPC_EXCP_FP_VXSOFT:
608 env->fpscr |= 1 << FPSCR_VXSOFT;
609 break;
610 case POWERPC_EXCP_FP_VXISI:
611 /* Magnitude subtraction of infinities */
612 env->fpscr |= 1 << FPSCR_VXISI;
613 goto update_arith;
614 case POWERPC_EXCP_FP_VXIDI:
615 /* Division of infinity by infinity */
616 env->fpscr |= 1 << FPSCR_VXIDI;
617 goto update_arith;
618 case POWERPC_EXCP_FP_VXZDZ:
619 /* Division of zero by zero */
620 env->fpscr |= 1 << FPSCR_VXZDZ;
621 goto update_arith;
622 case POWERPC_EXCP_FP_VXIMZ:
623 /* Multiplication of zero by infinity */
624 env->fpscr |= 1 << FPSCR_VXIMZ;
625 goto update_arith;
626 case POWERPC_EXCP_FP_VXVC:
627 /* Ordered comparison of NaN */
628 env->fpscr |= 1 << FPSCR_VXVC;
629 env->fpscr &= ~(0xF << FPSCR_FPCC);
630 env->fpscr |= 0x11 << FPSCR_FPCC;
631 /* We must update the target FPR before raising the exception */
632 if (ve != 0) {
633 env->exception_index = POWERPC_EXCP_PROGRAM;
634 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_VXVC;
635 /* Update the floating-point enabled exception summary */
636 env->fpscr |= 1 << FPSCR_FEX;
637 /* Exception is differed */
638 ve = 0;
639 }
640 break;
641 case POWERPC_EXCP_FP_VXSQRT:
642 /* Square root of a negative number */
643 env->fpscr |= 1 << FPSCR_VXSQRT;
644 update_arith:
645 env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
646 if (ve == 0) {
647 /* Set the result to quiet NaN */
648 ret = 0xFFF8000000000000ULL;
649 env->fpscr &= ~(0xF << FPSCR_FPCC);
650 env->fpscr |= 0x11 << FPSCR_FPCC;
651 }
652 break;
653 case POWERPC_EXCP_FP_VXCVI:
654 /* Invalid conversion */
655 env->fpscr |= 1 << FPSCR_VXCVI;
656 env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
657 if (ve == 0) {
658 /* Set the result to quiet NaN */
659 ret = 0xFFF8000000000000ULL;
660 env->fpscr &= ~(0xF << FPSCR_FPCC);
661 env->fpscr |= 0x11 << FPSCR_FPCC;
662 }
663 break;
664 }
665 /* Update the floating-point invalid operation summary */
666 env->fpscr |= 1 << FPSCR_VX;
667 /* Update the floating-point exception summary */
668 env->fpscr |= 1 << FPSCR_FX;
669 if (ve != 0) {
670 /* Update the floating-point enabled exception summary */
671 env->fpscr |= 1 << FPSCR_FEX;
672 if (msr_fe0 != 0 || msr_fe1 != 0)
673 helper_raise_exception_err(POWERPC_EXCP_PROGRAM, POWERPC_EXCP_FP | op);
674 }
675 return ret;
676 }
677
678 static inline void float_zero_divide_excp(void)
679 {
680 env->fpscr |= 1 << FPSCR_ZX;
681 env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
682 /* Update the floating-point exception summary */
683 env->fpscr |= 1 << FPSCR_FX;
684 if (fpscr_ze != 0) {
685 /* Update the floating-point enabled exception summary */
686 env->fpscr |= 1 << FPSCR_FEX;
687 if (msr_fe0 != 0 || msr_fe1 != 0) {
688 helper_raise_exception_err(POWERPC_EXCP_PROGRAM,
689 POWERPC_EXCP_FP | POWERPC_EXCP_FP_ZX);
690 }
691 }
692 }
693
694 static inline void float_overflow_excp(void)
695 {
696 env->fpscr |= 1 << FPSCR_OX;
697 /* Update the floating-point exception summary */
698 env->fpscr |= 1 << FPSCR_FX;
699 if (fpscr_oe != 0) {
700 /* XXX: should adjust the result */
701 /* Update the floating-point enabled exception summary */
702 env->fpscr |= 1 << FPSCR_FEX;
703 /* We must update the target FPR before raising the exception */
704 env->exception_index = POWERPC_EXCP_PROGRAM;
705 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_OX;
706 } else {
707 env->fpscr |= 1 << FPSCR_XX;
708 env->fpscr |= 1 << FPSCR_FI;
709 }
710 }
711
712 static inline void float_underflow_excp(void)
713 {
714 env->fpscr |= 1 << FPSCR_UX;
715 /* Update the floating-point exception summary */
716 env->fpscr |= 1 << FPSCR_FX;
717 if (fpscr_ue != 0) {
718 /* XXX: should adjust the result */
719 /* Update the floating-point enabled exception summary */
720 env->fpscr |= 1 << FPSCR_FEX;
721 /* We must update the target FPR before raising the exception */
722 env->exception_index = POWERPC_EXCP_PROGRAM;
723 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_UX;
724 }
725 }
726
727 static inline void float_inexact_excp(void)
728 {
729 env->fpscr |= 1 << FPSCR_XX;
730 /* Update the floating-point exception summary */
731 env->fpscr |= 1 << FPSCR_FX;
732 if (fpscr_xe != 0) {
733 /* Update the floating-point enabled exception summary */
734 env->fpscr |= 1 << FPSCR_FEX;
735 /* We must update the target FPR before raising the exception */
736 env->exception_index = POWERPC_EXCP_PROGRAM;
737 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_XX;
738 }
739 }
740
741 static inline void fpscr_set_rounding_mode(void)
742 {
743 int rnd_type;
744
745 /* Set rounding mode */
746 switch (fpscr_rn) {
747 case 0:
748 /* Best approximation (round to nearest) */
749 rnd_type = float_round_nearest_even;
750 break;
751 case 1:
752 /* Smaller magnitude (round toward zero) */
753 rnd_type = float_round_to_zero;
754 break;
755 case 2:
756 /* Round toward +infinite */
757 rnd_type = float_round_up;
758 break;
759 default:
760 case 3:
761 /* Round toward -infinite */
762 rnd_type = float_round_down;
763 break;
764 }
765 set_float_rounding_mode(rnd_type, &env->fp_status);
766 }
767
768 void helper_fpscr_clrbit (uint32_t bit)
769 {
770 int prev;
771
772 prev = (env->fpscr >> bit) & 1;
773 env->fpscr &= ~(1 << bit);
774 if (prev == 1) {
775 switch (bit) {
776 case FPSCR_RN1:
777 case FPSCR_RN:
778 fpscr_set_rounding_mode();
779 break;
780 default:
781 break;
782 }
783 }
784 }
785
786 void helper_fpscr_setbit (uint32_t bit)
787 {
788 int prev;
789
790 prev = (env->fpscr >> bit) & 1;
791 env->fpscr |= 1 << bit;
792 if (prev == 0) {
793 switch (bit) {
794 case FPSCR_VX:
795 env->fpscr |= 1 << FPSCR_FX;
796 if (fpscr_ve)
797 goto raise_ve;
798 case FPSCR_OX:
799 env->fpscr |= 1 << FPSCR_FX;
800 if (fpscr_oe)
801 goto raise_oe;
802 break;
803 case FPSCR_UX:
804 env->fpscr |= 1 << FPSCR_FX;
805 if (fpscr_ue)
806 goto raise_ue;
807 break;
808 case FPSCR_ZX:
809 env->fpscr |= 1 << FPSCR_FX;
810 if (fpscr_ze)
811 goto raise_ze;
812 break;
813 case FPSCR_XX:
814 env->fpscr |= 1 << FPSCR_FX;
815 if (fpscr_xe)
816 goto raise_xe;
817 break;
818 case FPSCR_VXSNAN:
819 case FPSCR_VXISI:
820 case FPSCR_VXIDI:
821 case FPSCR_VXZDZ:
822 case FPSCR_VXIMZ:
823 case FPSCR_VXVC:
824 case FPSCR_VXSOFT:
825 case FPSCR_VXSQRT:
826 case FPSCR_VXCVI:
827 env->fpscr |= 1 << FPSCR_VX;
828 env->fpscr |= 1 << FPSCR_FX;
829 if (fpscr_ve != 0)
830 goto raise_ve;
831 break;
832 case FPSCR_VE:
833 if (fpscr_vx != 0) {
834 raise_ve:
835 env->error_code = POWERPC_EXCP_FP;
836 if (fpscr_vxsnan)
837 env->error_code |= POWERPC_EXCP_FP_VXSNAN;
838 if (fpscr_vxisi)
839 env->error_code |= POWERPC_EXCP_FP_VXISI;
840 if (fpscr_vxidi)
841 env->error_code |= POWERPC_EXCP_FP_VXIDI;
842 if (fpscr_vxzdz)
843 env->error_code |= POWERPC_EXCP_FP_VXZDZ;
844 if (fpscr_vximz)
845 env->error_code |= POWERPC_EXCP_FP_VXIMZ;
846 if (fpscr_vxvc)
847 env->error_code |= POWERPC_EXCP_FP_VXVC;
848 if (fpscr_vxsoft)
849 env->error_code |= POWERPC_EXCP_FP_VXSOFT;
850 if (fpscr_vxsqrt)
851 env->error_code |= POWERPC_EXCP_FP_VXSQRT;
852 if (fpscr_vxcvi)
853 env->error_code |= POWERPC_EXCP_FP_VXCVI;
854 goto raise_excp;
855 }
856 break;
857 case FPSCR_OE:
858 if (fpscr_ox != 0) {
859 raise_oe:
860 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_OX;
861 goto raise_excp;
862 }
863 break;
864 case FPSCR_UE:
865 if (fpscr_ux != 0) {
866 raise_ue:
867 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_UX;
868 goto raise_excp;
869 }
870 break;
871 case FPSCR_ZE:
872 if (fpscr_zx != 0) {
873 raise_ze:
874 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_ZX;
875 goto raise_excp;
876 }
877 break;
878 case FPSCR_XE:
879 if (fpscr_xx != 0) {
880 raise_xe:
881 env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_XX;
882 goto raise_excp;
883 }
884 break;
885 case FPSCR_RN1:
886 case FPSCR_RN:
887 fpscr_set_rounding_mode();
888 break;
889 default:
890 break;
891 raise_excp:
892 /* Update the floating-point enabled exception summary */
893 env->fpscr |= 1 << FPSCR_FEX;
894 /* We have to update Rc1 before raising the exception */
895 env->exception_index = POWERPC_EXCP_PROGRAM;
896 break;
897 }
898 }
899 }
900
901 void helper_store_fpscr (uint64_t arg, uint32_t mask)
902 {
903 /*
904 * We use only the 32 LSB of the incoming fpr
905 */
906 uint32_t prev, new;
907 int i;
908
909 prev = env->fpscr;
910 new = (uint32_t)arg;
911 new &= ~0x60000000;
912 new |= prev & 0x60000000;
913 for (i = 0; i < 8; i++) {
914 if (mask & (1 << i)) {
915 env->fpscr &= ~(0xF << (4 * i));
916 env->fpscr |= new & (0xF << (4 * i));
917 }
918 }
919 /* Update VX and FEX */
920 if (fpscr_ix != 0)
921 env->fpscr |= 1 << FPSCR_VX;
922 else
923 env->fpscr &= ~(1 << FPSCR_VX);
924 if ((fpscr_ex & fpscr_eex) != 0) {
925 env->fpscr |= 1 << FPSCR_FEX;
926 env->exception_index = POWERPC_EXCP_PROGRAM;
927 /* XXX: we should compute it properly */
928 env->error_code = POWERPC_EXCP_FP;
929 }
930 else
931 env->fpscr &= ~(1 << FPSCR_FEX);
932 fpscr_set_rounding_mode();
933 }
934
935 void helper_float_check_status (void)
936 {
937 #ifdef CONFIG_SOFTFLOAT
938 if (env->exception_index == POWERPC_EXCP_PROGRAM &&
939 (env->error_code & POWERPC_EXCP_FP)) {
940 /* Differred floating-point exception after target FPR update */
941 if (msr_fe0 != 0 || msr_fe1 != 0)
942 helper_raise_exception_err(env->exception_index, env->error_code);
943 } else {
944 int status = get_float_exception_flags(&env->fp_status);
945 if (status & float_flag_divbyzero) {
946 float_zero_divide_excp();
947 } else if (status & float_flag_overflow) {
948 float_overflow_excp();
949 } else if (status & float_flag_underflow) {
950 float_underflow_excp();
951 } else if (status & float_flag_inexact) {
952 float_inexact_excp();
953 }
954 }
955 #else
956 if (env->exception_index == POWERPC_EXCP_PROGRAM &&
957 (env->error_code & POWERPC_EXCP_FP)) {
958 /* Differred floating-point exception after target FPR update */
959 if (msr_fe0 != 0 || msr_fe1 != 0)
960 helper_raise_exception_err(env->exception_index, env->error_code);
961 }
962 #endif
963 }
964
965 #ifdef CONFIG_SOFTFLOAT
966 void helper_reset_fpstatus (void)
967 {
968 set_float_exception_flags(0, &env->fp_status);
969 }
970 #endif
971
972 /* fadd - fadd. */
973 uint64_t helper_fadd (uint64_t arg1, uint64_t arg2)
974 {
975 CPU_DoubleU farg1, farg2;
976
977 farg1.ll = arg1;
978 farg2.ll = arg2;
979 #if USE_PRECISE_EMULATION
980 if (unlikely(float64_is_signaling_nan(farg1.d) ||
981 float64_is_signaling_nan(farg2.d))) {
982 /* sNaN addition */
983 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
984 } else if (unlikely(float64_is_infinity(farg1.d) && float64_is_infinity(farg2.d) &&
985 float64_is_neg(farg1.d) != float64_is_neg(farg2.d))) {
986 /* Magnitude subtraction of infinities */
987 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
988 } else {
989 farg1.d = float64_add(farg1.d, farg2.d, &env->fp_status);
990 }
991 #else
992 farg1.d = float64_add(farg1.d, farg2.d, &env->fp_status);
993 #endif
994 return farg1.ll;
995 }
996
997 /* fsub - fsub. */
998 uint64_t helper_fsub (uint64_t arg1, uint64_t arg2)
999 {
1000 CPU_DoubleU farg1, farg2;
1001
1002 farg1.ll = arg1;
1003 farg2.ll = arg2;
1004 #if USE_PRECISE_EMULATION
1005 {
1006 if (unlikely(float64_is_signaling_nan(farg1.d) ||
1007 float64_is_signaling_nan(farg2.d))) {
1008 /* sNaN subtraction */
1009 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1010 } else if (unlikely(float64_is_infinity(farg1.d) && float64_is_infinity(farg2.d) &&
1011 float64_is_neg(farg1.d) == float64_is_neg(farg2.d))) {
1012 /* Magnitude subtraction of infinities */
1013 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
1014 } else {
1015 farg1.d = float64_sub(farg1.d, farg2.d, &env->fp_status);
1016 }
1017 }
1018 #else
1019 farg1.d = float64_sub(farg1.d, farg2.d, &env->fp_status);
1020 #endif
1021 return farg1.ll;
1022 }
1023
1024 /* fmul - fmul. */
1025 uint64_t helper_fmul (uint64_t arg1, uint64_t arg2)
1026 {
1027 CPU_DoubleU farg1, farg2;
1028
1029 farg1.ll = arg1;
1030 farg2.ll = arg2;
1031 #if USE_PRECISE_EMULATION
1032 if (unlikely(float64_is_signaling_nan(farg1.d) ||
1033 float64_is_signaling_nan(farg2.d))) {
1034 /* sNaN multiplication */
1035 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1036 } else if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
1037 (float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
1038 /* Multiplication of zero by infinity */
1039 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXIMZ);
1040 } else {
1041 farg1.d = float64_mul(farg1.d, farg2.d, &env->fp_status);
1042 }
1043 #else
1044 farg1.d = float64_mul(farg1.d, farg2.d, &env->fp_status);
1045 #endif
1046 return farg1.ll;
1047 }
1048
1049 /* fdiv - fdiv. */
1050 uint64_t helper_fdiv (uint64_t arg1, uint64_t arg2)
1051 {
1052 CPU_DoubleU farg1, farg2;
1053
1054 farg1.ll = arg1;
1055 farg2.ll = arg2;
1056 #if USE_PRECISE_EMULATION
1057 if (unlikely(float64_is_signaling_nan(farg1.d) ||
1058 float64_is_signaling_nan(farg2.d))) {
1059 /* sNaN division */
1060 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1061 } else if (unlikely(float64_is_infinity(farg1.d) && float64_is_infinity(farg2.d))) {
1062 /* Division of infinity by infinity */
1063 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXIDI);
1064 } else if (unlikely(float64_is_zero(farg1.d) && float64_is_zero(farg2.d))) {
1065 /* Division of zero by zero */
1066 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXZDZ);
1067 } else {
1068 farg1.d = float64_div(farg1.d, farg2.d, &env->fp_status);
1069 }
1070 #else
1071 farg1.d = float64_div(farg1.d, farg2.d, &env->fp_status);
1072 #endif
1073 return farg1.ll;
1074 }
1075
1076 /* fabs */
1077 uint64_t helper_fabs (uint64_t arg)
1078 {
1079 CPU_DoubleU farg;
1080
1081 farg.ll = arg;
1082 farg.d = float64_abs(farg.d);
1083 return farg.ll;
1084 }
1085
1086 /* fnabs */
1087 uint64_t helper_fnabs (uint64_t arg)
1088 {
1089 CPU_DoubleU farg;
1090
1091 farg.ll = arg;
1092 farg.d = float64_abs(farg.d);
1093 farg.d = float64_chs(farg.d);
1094 return farg.ll;
1095 }
1096
1097 /* fneg */
1098 uint64_t helper_fneg (uint64_t arg)
1099 {
1100 CPU_DoubleU farg;
1101
1102 farg.ll = arg;
1103 farg.d = float64_chs(farg.d);
1104 return farg.ll;
1105 }
1106
1107 /* fctiw - fctiw. */
1108 uint64_t helper_fctiw (uint64_t arg)
1109 {
1110 CPU_DoubleU farg;
1111 farg.ll = arg;
1112
1113 if (unlikely(float64_is_signaling_nan(farg.d))) {
1114 /* sNaN conversion */
1115 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
1116 } else if (unlikely(float64_is_nan(farg.d) || float64_is_infinity(farg.d))) {
1117 /* qNan / infinity conversion */
1118 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
1119 } else {
1120 farg.ll = float64_to_int32(farg.d, &env->fp_status);
1121 #if USE_PRECISE_EMULATION
1122 /* XXX: higher bits are not supposed to be significant.
1123 * to make tests easier, return the same as a real PowerPC 750
1124 */
1125 farg.ll |= 0xFFF80000ULL << 32;
1126 #endif
1127 }
1128 return farg.ll;
1129 }
1130
1131 /* fctiwz - fctiwz. */
1132 uint64_t helper_fctiwz (uint64_t arg)
1133 {
1134 CPU_DoubleU farg;
1135 farg.ll = arg;
1136
1137 if (unlikely(float64_is_signaling_nan(farg.d))) {
1138 /* sNaN conversion */
1139 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
1140 } else if (unlikely(float64_is_nan(farg.d) || float64_is_infinity(farg.d))) {
1141 /* qNan / infinity conversion */
1142 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
1143 } else {
1144 farg.ll = float64_to_int32_round_to_zero(farg.d, &env->fp_status);
1145 #if USE_PRECISE_EMULATION
1146 /* XXX: higher bits are not supposed to be significant.
1147 * to make tests easier, return the same as a real PowerPC 750
1148 */
1149 farg.ll |= 0xFFF80000ULL << 32;
1150 #endif
1151 }
1152 return farg.ll;
1153 }
1154
1155 #if defined(TARGET_PPC64)
1156 /* fcfid - fcfid. */
1157 uint64_t helper_fcfid (uint64_t arg)
1158 {
1159 CPU_DoubleU farg;
1160 farg.d = int64_to_float64(arg, &env->fp_status);
1161 return farg.ll;
1162 }
1163
1164 /* fctid - fctid. */
1165 uint64_t helper_fctid (uint64_t arg)
1166 {
1167 CPU_DoubleU farg;
1168 farg.ll = arg;
1169
1170 if (unlikely(float64_is_signaling_nan(farg.d))) {
1171 /* sNaN conversion */
1172 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
1173 } else if (unlikely(float64_is_nan(farg.d) || float64_is_infinity(farg.d))) {
1174 /* qNan / infinity conversion */
1175 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
1176 } else {
1177 farg.ll = float64_to_int64(farg.d, &env->fp_status);
1178 }
1179 return farg.ll;
1180 }
1181
1182 /* fctidz - fctidz. */
1183 uint64_t helper_fctidz (uint64_t arg)
1184 {
1185 CPU_DoubleU farg;
1186 farg.ll = arg;
1187
1188 if (unlikely(float64_is_signaling_nan(farg.d))) {
1189 /* sNaN conversion */
1190 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
1191 } else if (unlikely(float64_is_nan(farg.d) || float64_is_infinity(farg.d))) {
1192 /* qNan / infinity conversion */
1193 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
1194 } else {
1195 farg.ll = float64_to_int64_round_to_zero(farg.d, &env->fp_status);
1196 }
1197 return farg.ll;
1198 }
1199
1200 #endif
1201
1202 static inline uint64_t do_fri(uint64_t arg, int rounding_mode)
1203 {
1204 CPU_DoubleU farg;
1205 farg.ll = arg;
1206
1207 if (unlikely(float64_is_signaling_nan(farg.d))) {
1208 /* sNaN round */
1209 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
1210 } else if (unlikely(float64_is_nan(farg.d) || float64_is_infinity(farg.d))) {
1211 /* qNan / infinity round */
1212 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
1213 } else {
1214 set_float_rounding_mode(rounding_mode, &env->fp_status);
1215 farg.ll = float64_round_to_int(farg.d, &env->fp_status);
1216 /* Restore rounding mode from FPSCR */
1217 fpscr_set_rounding_mode();
1218 }
1219 return farg.ll;
1220 }
1221
1222 uint64_t helper_frin (uint64_t arg)
1223 {
1224 return do_fri(arg, float_round_nearest_even);
1225 }
1226
1227 uint64_t helper_friz (uint64_t arg)
1228 {
1229 return do_fri(arg, float_round_to_zero);
1230 }
1231
1232 uint64_t helper_frip (uint64_t arg)
1233 {
1234 return do_fri(arg, float_round_up);
1235 }
1236
1237 uint64_t helper_frim (uint64_t arg)
1238 {
1239 return do_fri(arg, float_round_down);
1240 }
1241
1242 /* fmadd - fmadd. */
1243 uint64_t helper_fmadd (uint64_t arg1, uint64_t arg2, uint64_t arg3)
1244 {
1245 CPU_DoubleU farg1, farg2, farg3;
1246
1247 farg1.ll = arg1;
1248 farg2.ll = arg2;
1249 farg3.ll = arg3;
1250 #if USE_PRECISE_EMULATION
1251 if (unlikely(float64_is_signaling_nan(farg1.d) ||
1252 float64_is_signaling_nan(farg2.d) ||
1253 float64_is_signaling_nan(farg3.d))) {
1254 /* sNaN operation */
1255 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1256 } else if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
1257 (float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
1258 /* Multiplication of zero by infinity */
1259 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXIMZ);
1260 } else {
1261 #ifdef FLOAT128
1262 /* This is the way the PowerPC specification defines it */
1263 float128 ft0_128, ft1_128;
1264
1265 ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
1266 ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
1267 ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
1268 if (unlikely(float128_is_infinity(ft0_128) && float64_is_infinity(farg3.d) &&
1269 float128_is_neg(ft0_128) != float64_is_neg(farg3.d))) {
1270 /* Magnitude subtraction of infinities */
1271 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
1272 } else {
1273 ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
1274 ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status);
1275 farg1.d = float128_to_float64(ft0_128, &env->fp_status);
1276 }
1277 #else
1278 /* This is OK on x86 hosts */
1279 farg1.d = (farg1.d * farg2.d) + farg3.d;
1280 #endif
1281 }
1282 #else
1283 farg1.d = float64_mul(farg1.d, farg2.d, &env->fp_status);
1284 farg1.d = float64_add(farg1.d, farg3.d, &env->fp_status);
1285 #endif
1286 return farg1.ll;
1287 }
1288
1289 /* fmsub - fmsub. */
1290 uint64_t helper_fmsub (uint64_t arg1, uint64_t arg2, uint64_t arg3)
1291 {
1292 CPU_DoubleU farg1, farg2, farg3;
1293
1294 farg1.ll = arg1;
1295 farg2.ll = arg2;
1296 farg3.ll = arg3;
1297 #if USE_PRECISE_EMULATION
1298 if (unlikely(float64_is_signaling_nan(farg1.d) ||
1299 float64_is_signaling_nan(farg2.d) ||
1300 float64_is_signaling_nan(farg3.d))) {
1301 /* sNaN operation */
1302 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1303 } else if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
1304 (float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
1305 /* Multiplication of zero by infinity */
1306 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXIMZ);
1307 } else {
1308 #ifdef FLOAT128
1309 /* This is the way the PowerPC specification defines it */
1310 float128 ft0_128, ft1_128;
1311
1312 ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
1313 ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
1314 ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
1315 if (unlikely(float128_is_infinity(ft0_128) && float64_is_infinity(farg3.d) &&
1316 float128_is_neg(ft0_128) == float64_is_neg(farg3.d))) {
1317 /* Magnitude subtraction of infinities */
1318 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
1319 } else {
1320 ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
1321 ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status);
1322 farg1.d = float128_to_float64(ft0_128, &env->fp_status);
1323 }
1324 #else
1325 /* This is OK on x86 hosts */
1326 farg1.d = (farg1.d * farg2.d) - farg3.d;
1327 #endif
1328 }
1329 #else
1330 farg1.d = float64_mul(farg1.d, farg2.d, &env->fp_status);
1331 farg1.d = float64_sub(farg1.d, farg3.d, &env->fp_status);
1332 #endif
1333 return farg1.ll;
1334 }
1335
1336 /* fnmadd - fnmadd. */
1337 uint64_t helper_fnmadd (uint64_t arg1, uint64_t arg2, uint64_t arg3)
1338 {
1339 CPU_DoubleU farg1, farg2, farg3;
1340
1341 farg1.ll = arg1;
1342 farg2.ll = arg2;
1343 farg3.ll = arg3;
1344
1345 if (unlikely(float64_is_signaling_nan(farg1.d) ||
1346 float64_is_signaling_nan(farg2.d) ||
1347 float64_is_signaling_nan(farg3.d))) {
1348 /* sNaN operation */
1349 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1350 } else if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
1351 (float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
1352 /* Multiplication of zero by infinity */
1353 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXIMZ);
1354 } else {
1355 #if USE_PRECISE_EMULATION
1356 #ifdef FLOAT128
1357 /* This is the way the PowerPC specification defines it */
1358 float128 ft0_128, ft1_128;
1359
1360 ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
1361 ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
1362 ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
1363 if (unlikely(float128_is_infinity(ft0_128) && float64_is_infinity(farg3.d) &&
1364 float128_is_neg(ft0_128) != float64_is_neg(farg3.d))) {
1365 /* Magnitude subtraction of infinities */
1366 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
1367 } else {
1368 ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
1369 ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status);
1370 farg1.d = float128_to_float64(ft0_128, &env->fp_status);
1371 }
1372 #else
1373 /* This is OK on x86 hosts */
1374 farg1.d = (farg1.d * farg2.d) + farg3.d;
1375 #endif
1376 #else
1377 farg1.d = float64_mul(farg1.d, farg2.d, &env->fp_status);
1378 farg1.d = float64_add(farg1.d, farg3.d, &env->fp_status);
1379 #endif
1380 if (likely(!float64_is_nan(farg1.d)))
1381 farg1.d = float64_chs(farg1.d);
1382 }
1383 return farg1.ll;
1384 }
1385
1386 /* fnmsub - fnmsub. */
1387 uint64_t helper_fnmsub (uint64_t arg1, uint64_t arg2, uint64_t arg3)
1388 {
1389 CPU_DoubleU farg1, farg2, farg3;
1390
1391 farg1.ll = arg1;
1392 farg2.ll = arg2;
1393 farg3.ll = arg3;
1394
1395 if (unlikely(float64_is_signaling_nan(farg1.d) ||
1396 float64_is_signaling_nan(farg2.d) ||
1397 float64_is_signaling_nan(farg3.d))) {
1398 /* sNaN operation */
1399 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1400 } else if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
1401 (float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
1402 /* Multiplication of zero by infinity */
1403 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXIMZ);
1404 } else {
1405 #if USE_PRECISE_EMULATION
1406 #ifdef FLOAT128
1407 /* This is the way the PowerPC specification defines it */
1408 float128 ft0_128, ft1_128;
1409
1410 ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
1411 ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
1412 ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
1413 if (unlikely(float128_is_infinity(ft0_128) && float64_is_infinity(farg3.d) &&
1414 float128_is_neg(ft0_128) == float64_is_neg(farg3.d))) {
1415 /* Magnitude subtraction of infinities */
1416 farg1.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
1417 } else {
1418 ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
1419 ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status);
1420 farg1.d = float128_to_float64(ft0_128, &env->fp_status);
1421 }
1422 #else
1423 /* This is OK on x86 hosts */
1424 farg1.d = (farg1.d * farg2.d) - farg3.d;
1425 #endif
1426 #else
1427 farg1.d = float64_mul(farg1.d, farg2.d, &env->fp_status);
1428 farg1.d = float64_sub(farg1.d, farg3.d, &env->fp_status);
1429 #endif
1430 if (likely(!float64_is_nan(farg1.d)))
1431 farg1.d = float64_chs(farg1.d);
1432 }
1433 return farg1.ll;
1434 }
1435
1436 /* frsp - frsp. */
1437 uint64_t helper_frsp (uint64_t arg)
1438 {
1439 CPU_DoubleU farg;
1440 float32 f32;
1441 farg.ll = arg;
1442
1443 #if USE_PRECISE_EMULATION
1444 if (unlikely(float64_is_signaling_nan(farg.d))) {
1445 /* sNaN square root */
1446 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1447 } else {
1448 f32 = float64_to_float32(farg.d, &env->fp_status);
1449 farg.d = float32_to_float64(f32, &env->fp_status);
1450 }
1451 #else
1452 f32 = float64_to_float32(farg.d, &env->fp_status);
1453 farg.d = float32_to_float64(f32, &env->fp_status);
1454 #endif
1455 return farg.ll;
1456 }
1457
1458 /* fsqrt - fsqrt. */
1459 uint64_t helper_fsqrt (uint64_t arg)
1460 {
1461 CPU_DoubleU farg;
1462 farg.ll = arg;
1463
1464 if (unlikely(float64_is_signaling_nan(farg.d))) {
1465 /* sNaN square root */
1466 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1467 } else if (unlikely(float64_is_neg(farg.d) && !float64_is_zero(farg.d))) {
1468 /* Square root of a negative nonzero number */
1469 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT);
1470 } else {
1471 farg.d = float64_sqrt(farg.d, &env->fp_status);
1472 }
1473 return farg.ll;
1474 }
1475
1476 /* fre - fre. */
1477 uint64_t helper_fre (uint64_t arg)
1478 {
1479 CPU_DoubleU farg;
1480 farg.ll = arg;
1481
1482 if (unlikely(float64_is_signaling_nan(farg.d))) {
1483 /* sNaN reciprocal */
1484 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1485 } else {
1486 farg.d = float64_div(float64_one, farg.d, &env->fp_status);
1487 }
1488 return farg.d;
1489 }
1490
1491 /* fres - fres. */
1492 uint64_t helper_fres (uint64_t arg)
1493 {
1494 CPU_DoubleU farg;
1495 float32 f32;
1496 farg.ll = arg;
1497
1498 if (unlikely(float64_is_signaling_nan(farg.d))) {
1499 /* sNaN reciprocal */
1500 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1501 } else {
1502 farg.d = float64_div(float64_one, farg.d, &env->fp_status);
1503 f32 = float64_to_float32(farg.d, &env->fp_status);
1504 farg.d = float32_to_float64(f32, &env->fp_status);
1505 }
1506 return farg.ll;
1507 }
1508
1509 /* frsqrte - frsqrte. */
1510 uint64_t helper_frsqrte (uint64_t arg)
1511 {
1512 CPU_DoubleU farg;
1513 float32 f32;
1514 farg.ll = arg;
1515
1516 if (unlikely(float64_is_signaling_nan(farg.d))) {
1517 /* sNaN reciprocal square root */
1518 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1519 } else if (unlikely(float64_is_neg(farg.d) && !float64_is_zero(farg.d))) {
1520 /* Reciprocal square root of a negative nonzero number */
1521 farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT);
1522 } else {
1523 farg.d = float64_sqrt(farg.d, &env->fp_status);
1524 farg.d = float64_div(float64_one, farg.d, &env->fp_status);
1525 f32 = float64_to_float32(farg.d, &env->fp_status);
1526 farg.d = float32_to_float64(f32, &env->fp_status);
1527 }
1528 return farg.ll;
1529 }
1530
1531 /* fsel - fsel. */
1532 uint64_t helper_fsel (uint64_t arg1, uint64_t arg2, uint64_t arg3)
1533 {
1534 CPU_DoubleU farg1;
1535
1536 farg1.ll = arg1;
1537
1538 if ((!float64_is_neg(farg1.d) || float64_is_zero(farg1.d)) && !float64_is_nan(farg1.d))
1539 return arg2;
1540 else
1541 return arg3;
1542 }
1543
1544 void helper_fcmpu (uint64_t arg1, uint64_t arg2, uint32_t crfD)
1545 {
1546 CPU_DoubleU farg1, farg2;
1547 uint32_t ret = 0;
1548 farg1.ll = arg1;
1549 farg2.ll = arg2;
1550
1551 if (unlikely(float64_is_nan(farg1.d) ||
1552 float64_is_nan(farg2.d))) {
1553 ret = 0x01UL;
1554 } else if (float64_lt(farg1.d, farg2.d, &env->fp_status)) {
1555 ret = 0x08UL;
1556 } else if (!float64_le(farg1.d, farg2.d, &env->fp_status)) {
1557 ret = 0x04UL;
1558 } else {
1559 ret = 0x02UL;
1560 }
1561
1562 env->fpscr &= ~(0x0F << FPSCR_FPRF);
1563 env->fpscr |= ret << FPSCR_FPRF;
1564 env->crf[crfD] = ret;
1565 if (unlikely(ret == 0x01UL
1566 && (float64_is_signaling_nan(farg1.d) ||
1567 float64_is_signaling_nan(farg2.d)))) {
1568 /* sNaN comparison */
1569 fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
1570 }
1571 }
1572
1573 void helper_fcmpo (uint64_t arg1, uint64_t arg2, uint32_t crfD)
1574 {
1575 CPU_DoubleU farg1, farg2;
1576 uint32_t ret = 0;
1577 farg1.ll = arg1;
1578 farg2.ll = arg2;
1579
1580 if (unlikely(float64_is_nan(farg1.d) ||
1581 float64_is_nan(farg2.d))) {
1582 ret = 0x01UL;
1583 } else if (float64_lt(farg1.d, farg2.d, &env->fp_status)) {
1584 ret = 0x08UL;
1585 } else if (!float64_le(farg1.d, farg2.d, &env->fp_status)) {
1586 ret = 0x04UL;
1587 } else {
1588 ret = 0x02UL;
1589 }
1590
1591 env->fpscr &= ~(0x0F << FPSCR_FPRF);
1592 env->fpscr |= ret << FPSCR_FPRF;
1593 env->crf[crfD] = ret;
1594 if (unlikely (ret == 0x01UL)) {
1595 if (float64_is_signaling_nan(farg1.d) ||
1596 float64_is_signaling_nan(farg2.d)) {
1597 /* sNaN comparison */
1598 fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN |
1599 POWERPC_EXCP_FP_VXVC);
1600 } else {
1601 /* qNaN comparison */
1602 fload_invalid_op_excp(POWERPC_EXCP_FP_VXVC);
1603 }
1604 }
1605 }
1606
1607 #if !defined (CONFIG_USER_ONLY)
1608 void helper_store_msr (target_ulong val)
1609 {
1610 val = hreg_store_msr(env, val, 0);
1611 if (val != 0) {
1612 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
1613 helper_raise_exception(val);
1614 }
1615 }
1616
1617 static inline void do_rfi(target_ulong nip, target_ulong msr,
1618 target_ulong msrm, int keep_msrh)
1619 {
1620 #if defined(TARGET_PPC64)
1621 if (msr & (1ULL << MSR_SF)) {
1622 nip = (uint64_t)nip;
1623 msr &= (uint64_t)msrm;
1624 } else {
1625 nip = (uint32_t)nip;
1626 msr = (uint32_t)(msr & msrm);
1627 if (keep_msrh)
1628 msr |= env->msr & ~((uint64_t)0xFFFFFFFF);
1629 }
1630 #else
1631 nip = (uint32_t)nip;
1632 msr &= (uint32_t)msrm;
1633 #endif
1634 /* XXX: beware: this is false if VLE is supported */
1635 env->nip = nip & ~((target_ulong)0x00000003);
1636 hreg_store_msr(env, msr, 1);
1637 #if defined (DEBUG_OP)
1638 cpu_dump_rfi(env->nip, env->msr);
1639 #endif
1640 /* No need to raise an exception here,
1641 * as rfi is always the last insn of a TB
1642 */
1643 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
1644 }
1645
1646 void helper_rfi (void)
1647 {
1648 do_rfi(env->spr[SPR_SRR0], env->spr[SPR_SRR1],
1649 ~((target_ulong)0x783F0000), 1);
1650 }
1651
1652 #if defined(TARGET_PPC64)
1653 void helper_rfid (void)
1654 {
1655 do_rfi(env->spr[SPR_SRR0], env->spr[SPR_SRR1],
1656 ~((target_ulong)0x783F0000), 0);
1657 }
1658
1659 void helper_hrfid (void)
1660 {
1661 do_rfi(env->spr[SPR_HSRR0], env->spr[SPR_HSRR1],
1662 ~((target_ulong)0x783F0000), 0);
1663 }
1664 #endif
1665 #endif
1666
1667 void helper_tw (target_ulong arg1, target_ulong arg2, uint32_t flags)
1668 {
1669 if (!likely(!(((int32_t)arg1 < (int32_t)arg2 && (flags & 0x10)) ||
1670 ((int32_t)arg1 > (int32_t)arg2 && (flags & 0x08)) ||
1671 ((int32_t)arg1 == (int32_t)arg2 && (flags & 0x04)) ||
1672 ((uint32_t)arg1 < (uint32_t)arg2 && (flags & 0x02)) ||
1673 ((uint32_t)arg1 > (uint32_t)arg2 && (flags & 0x01))))) {
1674 helper_raise_exception_err(POWERPC_EXCP_PROGRAM, POWERPC_EXCP_TRAP);
1675 }
1676 }
1677
1678 #if defined(TARGET_PPC64)
1679 void helper_td (target_ulong arg1, target_ulong arg2, uint32_t flags)
1680 {
1681 if (!likely(!(((int64_t)arg1 < (int64_t)arg2 && (flags & 0x10)) ||
1682 ((int64_t)arg1 > (int64_t)arg2 && (flags & 0x08)) ||
1683 ((int64_t)arg1 == (int64_t)arg2 && (flags & 0x04)) ||
1684 ((uint64_t)arg1 < (uint64_t)arg2 && (flags & 0x02)) ||
1685 ((uint64_t)arg1 > (uint64_t)arg2 && (flags & 0x01)))))
1686 helper_raise_exception_err(POWERPC_EXCP_PROGRAM, POWERPC_EXCP_TRAP);
1687 }
1688 #endif
1689
1690 /*****************************************************************************/
1691 /* PowerPC 601 specific instructions (POWER bridge) */
1692
1693 target_ulong helper_clcs (uint32_t arg)
1694 {
1695 switch (arg) {
1696 case 0x0CUL:
1697 /* Instruction cache line size */
1698 return env->icache_line_size;
1699 break;
1700 case 0x0DUL:
1701 /* Data cache line size */
1702 return env->dcache_line_size;
1703 break;
1704 case 0x0EUL:
1705 /* Minimum cache line size */
1706 return (env->icache_line_size < env->dcache_line_size) ?
1707 env->icache_line_size : env->dcache_line_size;
1708 break;
1709 case 0x0FUL:
1710 /* Maximum cache line size */
1711 return (env->icache_line_size > env->dcache_line_size) ?
1712 env->icache_line_size : env->dcache_line_size;
1713 break;
1714 default:
1715 /* Undefined */
1716 return 0;
1717 break;
1718 }
1719 }
1720
1721 target_ulong helper_div (target_ulong arg1, target_ulong arg2)
1722 {
1723 uint64_t tmp = (uint64_t)arg1 << 32 | env->spr[SPR_MQ];
1724
1725 if (((int32_t)tmp == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
1726 (int32_t)arg2 == 0) {
1727 env->spr[SPR_MQ] = 0;
1728 return INT32_MIN;
1729 } else {
1730 env->spr[SPR_MQ] = tmp % arg2;
1731 return tmp / (int32_t)arg2;
1732 }
1733 }
1734
1735 target_ulong helper_divo (target_ulong arg1, target_ulong arg2)
1736 {
1737 uint64_t tmp = (uint64_t)arg1 << 32 | env->spr[SPR_MQ];
1738
1739 if (((int32_t)tmp == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
1740 (int32_t)arg2 == 0) {
1741 env->xer |= (1 << XER_OV) | (1 << XER_SO);
1742 env->spr[SPR_MQ] = 0;
1743 return INT32_MIN;
1744 } else {
1745 env->spr[SPR_MQ] = tmp % arg2;
1746 tmp /= (int32_t)arg2;
1747 if ((int32_t)tmp != tmp) {
1748 env->xer |= (1 << XER_OV) | (1 << XER_SO);
1749 } else {
1750 env->xer &= ~(1 << XER_OV);
1751 }
1752 return tmp;
1753 }
1754 }
1755
1756 target_ulong helper_divs (target_ulong arg1, target_ulong arg2)
1757 {
1758 if (((int32_t)arg1 == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
1759 (int32_t)arg2 == 0) {
1760 env->spr[SPR_MQ] = 0;
1761 return INT32_MIN;
1762 } else {
1763 env->spr[SPR_MQ] = (int32_t)arg1 % (int32_t)arg2;
1764 return (int32_t)arg1 / (int32_t)arg2;
1765 }
1766 }
1767
1768 target_ulong helper_divso (target_ulong arg1, target_ulong arg2)
1769 {
1770 if (((int32_t)arg1 == INT32_MIN && (int32_t)arg2 == (int32_t)-1) ||
1771 (int32_t)arg2 == 0) {
1772 env->xer |= (1 << XER_OV) | (1 << XER_SO);
1773 env->spr[SPR_MQ] = 0;
1774 return INT32_MIN;
1775 } else {
1776 env->xer &= ~(1 << XER_OV);
1777 env->spr[SPR_MQ] = (int32_t)arg1 % (int32_t)arg2;
1778 return (int32_t)arg1 / (int32_t)arg2;
1779 }
1780 }
1781
1782 #if !defined (CONFIG_USER_ONLY)
1783 target_ulong helper_rac (target_ulong addr)
1784 {
1785 mmu_ctx_t ctx;
1786 int nb_BATs;
1787 target_ulong ret = 0;
1788
1789 /* We don't have to generate many instances of this instruction,
1790 * as rac is supervisor only.
1791 */
1792 /* XXX: FIX THIS: Pretend we have no BAT */
1793 nb_BATs = env->nb_BATs;
1794 env->nb_BATs = 0;
1795 if (get_physical_address(env, &ctx, addr, 0, ACCESS_INT) == 0)
1796 ret = ctx.raddr;
1797 env->nb_BATs = nb_BATs;
1798 return ret;
1799 }
1800
1801 void helper_rfsvc (void)
1802 {
1803 do_rfi(env->lr, env->ctr, 0x0000FFFF, 0);
1804 }
1805 #endif
1806
1807 /*****************************************************************************/
1808 /* 602 specific instructions */
1809 /* mfrom is the most crazy instruction ever seen, imho ! */
1810 /* Real implementation uses a ROM table. Do the same */
1811 /* Extremly decomposed:
1812 * -arg / 256
1813 * return 256 * log10(10 + 1.0) + 0.5
1814 */
1815 #if !defined (CONFIG_USER_ONLY)
1816 target_ulong helper_602_mfrom (target_ulong arg)
1817 {
1818 if (likely(arg < 602)) {
1819 #include "mfrom_table.c"
1820 return mfrom_ROM_table[arg];
1821 } else {
1822 return 0;
1823 }
1824 }
1825 #endif
1826
1827 /*****************************************************************************/
1828 /* Embedded PowerPC specific helpers */
1829
1830 /* XXX: to be improved to check access rights when in user-mode */
1831 target_ulong helper_load_dcr (target_ulong dcrn)
1832 {
1833 uint32_t val = 0;
1834
1835 if (unlikely(env->dcr_env == NULL)) {
1836 qemu_log("No DCR environment\n");
1837 helper_raise_exception_err(POWERPC_EXCP_PROGRAM,
1838 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL);
1839 } else if (unlikely(ppc_dcr_read(env->dcr_env, (uint32_t)dcrn, &val) != 0)) {
1840 qemu_log("DCR read error %d %03x\n", (uint32_t)dcrn, (uint32_t)dcrn);
1841 helper_raise_exception_err(POWERPC_EXCP_PROGRAM,
1842 POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
1843 }
1844 return val;
1845 }
1846
1847 void helper_store_dcr (target_ulong dcrn, target_ulong val)
1848 {
1849 if (unlikely(env->dcr_env == NULL)) {
1850 qemu_log("No DCR environment\n");
1851 helper_raise_exception_err(POWERPC_EXCP_PROGRAM,
1852 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL);
1853 } else if (unlikely(ppc_dcr_write(env->dcr_env, (uint32_t)dcrn, (uint32_t)val) != 0)) {
1854 qemu_log("DCR write error %d %03x\n", (uint32_t)dcrn, (uint32_t)dcrn);
1855 helper_raise_exception_err(POWERPC_EXCP_PROGRAM,
1856 POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
1857 }
1858 }
1859
1860 #if !defined(CONFIG_USER_ONLY)
1861 void helper_40x_rfci (void)
1862 {
1863 do_rfi(env->spr[SPR_40x_SRR2], env->spr[SPR_40x_SRR3],
1864 ~((target_ulong)0xFFFF0000), 0);
1865 }
1866
1867 void helper_rfci (void)
1868 {
1869 do_rfi(env->spr[SPR_BOOKE_CSRR0], SPR_BOOKE_CSRR1,
1870 ~((target_ulong)0x3FFF0000), 0);
1871 }
1872
1873 void helper_rfdi (void)
1874 {
1875 do_rfi(env->spr[SPR_BOOKE_DSRR0], SPR_BOOKE_DSRR1,
1876 ~((target_ulong)0x3FFF0000), 0);
1877 }
1878
1879 void helper_rfmci (void)
1880 {
1881 do_rfi(env->spr[SPR_BOOKE_MCSRR0], SPR_BOOKE_MCSRR1,
1882 ~((target_ulong)0x3FFF0000), 0);
1883 }
1884 #endif
1885
1886 /* 440 specific */
1887 target_ulong helper_dlmzb (target_ulong high, target_ulong low, uint32_t update_Rc)
1888 {
1889 target_ulong mask;
1890 int i;
1891
1892 i = 1;
1893 for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
1894 if ((high & mask) == 0) {
1895 if (update_Rc) {
1896 env->crf[0] = 0x4;
1897 }
1898 goto done;
1899 }
1900 i++;
1901 }
1902 for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
1903 if ((low & mask) == 0) {
1904 if (update_Rc) {
1905 env->crf[0] = 0x8;
1906 }
1907 goto done;
1908 }
1909 i++;
1910 }
1911 if (update_Rc) {
1912 env->crf[0] = 0x2;
1913 }
1914 done:
1915 env->xer = (env->xer & ~0x7F) | i;
1916 if (update_Rc) {
1917 env->crf[0] |= xer_so;
1918 }
1919 return i;
1920 }
1921
1922 /*****************************************************************************/
1923 /* Altivec extension helpers */
1924 #if defined(HOST_WORDS_BIGENDIAN)
1925 #define HI_IDX 0
1926 #define LO_IDX 1
1927 #else
1928 #define HI_IDX 1
1929 #define LO_IDX 0
1930 #endif
1931
1932 #if defined(HOST_WORDS_BIGENDIAN)
1933 #define VECTOR_FOR_INORDER_I(index, element) \
1934 for (index = 0; index < ARRAY_SIZE(r->element); index++)
1935 #else
1936 #define VECTOR_FOR_INORDER_I(index, element) \
1937 for (index = ARRAY_SIZE(r->element)-1; index >= 0; index--)
1938 #endif
1939
1940 /* If X is a NaN, store the corresponding QNaN into RESULT. Otherwise,
1941 * execute the following block. */
1942 #define DO_HANDLE_NAN(result, x) \
1943 if (float32_is_nan(x) || float32_is_signaling_nan(x)) { \
1944 CPU_FloatU __f; \
1945 __f.f = x; \
1946 __f.l = __f.l | (1 << 22); /* Set QNaN bit. */ \
1947 result = __f.f; \
1948 } else
1949
1950 #define HANDLE_NAN1(result, x) \
1951 DO_HANDLE_NAN(result, x)
1952 #define HANDLE_NAN2(result, x, y) \
1953 DO_HANDLE_NAN(result, x) DO_HANDLE_NAN(result, y)
1954 #define HANDLE_NAN3(result, x, y, z) \
1955 DO_HANDLE_NAN(result, x) DO_HANDLE_NAN(result, y) DO_HANDLE_NAN(result, z)
1956
1957 /* Saturating arithmetic helpers. */
1958 #define SATCVT(from, to, from_type, to_type, min, max, use_min, use_max) \
1959 static inline to_type cvt##from##to(from_type x, int *sat) \
1960 { \
1961 to_type r; \
1962 if (use_min && x < min) { \
1963 r = min; \
1964 *sat = 1; \
1965 } else if (use_max && x > max) { \
1966 r = max; \
1967 *sat = 1; \
1968 } else { \
1969 r = x; \
1970 } \
1971 return r; \
1972 }
1973 SATCVT(sh, sb, int16_t, int8_t, INT8_MIN, INT8_MAX, 1, 1)
1974 SATCVT(sw, sh, int32_t, int16_t, INT16_MIN, INT16_MAX, 1, 1)
1975 SATCVT(sd, sw, int64_t, int32_t, INT32_MIN, INT32_MAX, 1, 1)
1976
1977 /* Work around gcc problems with the macro version */
1978 static inline uint8_t cvtuhub(uint16_t x, int *sat)
1979 {
1980 uint8_t r;
1981
1982 if (x > UINT8_MAX) {
1983 r = UINT8_MAX;
1984 *sat = 1;
1985 } else {
1986 r = x;
1987 }
1988 return r;
1989 }
1990 //SATCVT(uh, ub, uint16_t, uint8_t, 0, UINT8_MAX, 0, 1)
1991 SATCVT(uw, uh, uint32_t, uint16_t, 0, UINT16_MAX, 0, 1)
1992 SATCVT(ud, uw, uint64_t, uint32_t, 0, UINT32_MAX, 0, 1)
1993 SATCVT(sh, ub, int16_t, uint8_t, 0, UINT8_MAX, 1, 1)
1994 SATCVT(sw, uh, int32_t, uint16_t, 0, UINT16_MAX, 1, 1)
1995 SATCVT(sd, uw, int64_t, uint32_t, 0, UINT32_MAX, 1, 1)
1996 #undef SATCVT
1997
1998 #define LVE(name, access, swap, element) \
1999 void helper_##name (ppc_avr_t *r, target_ulong addr) \
2000 { \
2001 size_t n_elems = ARRAY_SIZE(r->element); \
2002 int adjust = HI_IDX*(n_elems-1); \
2003 int sh = sizeof(r->element[0]) >> 1; \
2004 int index = (addr & 0xf) >> sh; \
2005 if(msr_le) { \
2006 r->element[LO_IDX ? index : (adjust - index)] = swap(access(addr)); \
2007 } else { \
2008 r->element[LO_IDX ? index : (adjust - index)] = access(addr); \
2009 } \
2010 }
2011 #define I(x) (x)
2012 LVE(lvebx, ldub, I, u8)
2013 LVE(lvehx, lduw, bswap16, u16)
2014 LVE(lvewx, ldl, bswap32, u32)
2015 #undef I
2016 #undef LVE
2017
2018 void helper_lvsl (ppc_avr_t *r, target_ulong sh)
2019 {
2020 int i, j = (sh & 0xf);
2021
2022 VECTOR_FOR_INORDER_I (i, u8) {
2023 r->u8[i] = j++;
2024 }
2025 }
2026
2027 void helper_lvsr (ppc_avr_t *r, target_ulong sh)
2028 {
2029 int i, j = 0x10 - (sh & 0xf);
2030
2031 VECTOR_FOR_INORDER_I (i, u8) {
2032 r->u8[i] = j++;
2033 }
2034 }
2035
2036 #define STVE(name, access, swap, element) \
2037 void helper_##name (ppc_avr_t *r, target_ulong addr) \
2038 { \
2039 size_t n_elems = ARRAY_SIZE(r->element); \
2040 int adjust = HI_IDX*(n_elems-1); \
2041 int sh = sizeof(r->element[0]) >> 1; \
2042 int index = (addr & 0xf) >> sh; \
2043 if(msr_le) { \
2044 access(addr, swap(r->element[LO_IDX ? index : (adjust - index)])); \
2045 } else { \
2046 access(addr, r->element[LO_IDX ? index : (adjust - index)]); \
2047 } \
2048 }
2049 #define I(x) (x)
2050 STVE(stvebx, stb, I, u8)
2051 STVE(stvehx, stw, bswap16, u16)
2052 STVE(stvewx, stl, bswap32, u32)
2053 #undef I
2054 #undef LVE
2055
2056 void helper_mtvscr (ppc_avr_t *r)
2057 {
2058 #if defined(HOST_WORDS_BIGENDIAN)
2059 env->vscr = r->u32[3];
2060 #else
2061 env->vscr = r->u32[0];
2062 #endif
2063 set_flush_to_zero(vscr_nj, &env->vec_status);
2064 }
2065
2066 void helper_vaddcuw (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2067 {
2068 int i;
2069 for (i = 0; i < ARRAY_SIZE(r->u32); i++) {
2070 r->u32[i] = ~a->u32[i] < b->u32[i];
2071 }
2072 }
2073
2074 #define VARITH_DO(name, op, element) \
2075 void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2076 { \
2077 int i; \
2078 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2079 r->element[i] = a->element[i] op b->element[i]; \
2080 } \
2081 }
2082 #define VARITH(suffix, element) \
2083 VARITH_DO(add##suffix, +, element) \
2084 VARITH_DO(sub##suffix, -, element)
2085 VARITH(ubm, u8)
2086 VARITH(uhm, u16)
2087 VARITH(uwm, u32)
2088 #undef VARITH_DO
2089 #undef VARITH
2090
2091 #define VARITHFP(suffix, func) \
2092 void helper_v##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2093 { \
2094 int i; \
2095 for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
2096 HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { \
2097 r->f[i] = func(a->f[i], b->f[i], &env->vec_status); \
2098 } \
2099 } \
2100 }
2101 VARITHFP(addfp, float32_add)
2102 VARITHFP(subfp, float32_sub)
2103 #undef VARITHFP
2104
2105 #define VARITHSAT_CASE(type, op, cvt, element) \
2106 { \
2107 type result = (type)a->element[i] op (type)b->element[i]; \
2108 r->element[i] = cvt(result, &sat); \
2109 }
2110
2111 #define VARITHSAT_DO(name, op, optype, cvt, element) \
2112 void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2113 { \
2114 int sat = 0; \
2115 int i; \
2116 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2117 switch (sizeof(r->element[0])) { \
2118 case 1: VARITHSAT_CASE(optype, op, cvt, element); break; \
2119 case 2: VARITHSAT_CASE(optype, op, cvt, element); break; \
2120 case 4: VARITHSAT_CASE(optype, op, cvt, element); break; \
2121 } \
2122 } \
2123 if (sat) { \
2124 env->vscr |= (1 << VSCR_SAT); \
2125 } \
2126 }
2127 #define VARITHSAT_SIGNED(suffix, element, optype, cvt) \
2128 VARITHSAT_DO(adds##suffix##s, +, optype, cvt, element) \
2129 VARITHSAT_DO(subs##suffix##s, -, optype, cvt, element)
2130 #define VARITHSAT_UNSIGNED(suffix, element, optype, cvt) \
2131 VARITHSAT_DO(addu##suffix##s, +, optype, cvt, element) \
2132 VARITHSAT_DO(subu##suffix##s, -, optype, cvt, element)
2133 VARITHSAT_SIGNED(b, s8, int16_t, cvtshsb)
2134 VARITHSAT_SIGNED(h, s16, int32_t, cvtswsh)
2135 VARITHSAT_SIGNED(w, s32, int64_t, cvtsdsw)
2136 VARITHSAT_UNSIGNED(b, u8, uint16_t, cvtshub)
2137 VARITHSAT_UNSIGNED(h, u16, uint32_t, cvtswuh)
2138 VARITHSAT_UNSIGNED(w, u32, uint64_t, cvtsduw)
2139 #undef VARITHSAT_CASE
2140 #undef VARITHSAT_DO
2141 #undef VARITHSAT_SIGNED
2142 #undef VARITHSAT_UNSIGNED
2143
2144 #define VAVG_DO(name, element, etype) \
2145 void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2146 { \
2147 int i; \
2148 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2149 etype x = (etype)a->element[i] + (etype)b->element[i] + 1; \
2150 r->element[i] = x >> 1; \
2151 } \
2152 }
2153
2154 #define VAVG(type, signed_element, signed_type, unsigned_element, unsigned_type) \
2155 VAVG_DO(avgs##type, signed_element, signed_type) \
2156 VAVG_DO(avgu##type, unsigned_element, unsigned_type)
2157 VAVG(b, s8, int16_t, u8, uint16_t)
2158 VAVG(h, s16, int32_t, u16, uint32_t)
2159 VAVG(w, s32, int64_t, u32, uint64_t)
2160 #undef VAVG_DO
2161 #undef VAVG
2162
2163 #define VCF(suffix, cvt, element) \
2164 void helper_vcf##suffix (ppc_avr_t *r, ppc_avr_t *b, uint32_t uim) \
2165 { \
2166 int i; \
2167 for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
2168 float32 t = cvt(b->element[i], &env->vec_status); \
2169 r->f[i] = float32_scalbn (t, -uim, &env->vec_status); \
2170 } \
2171 }
2172 VCF(ux, uint32_to_float32, u32)
2173 VCF(sx, int32_to_float32, s32)
2174 #undef VCF
2175
2176 #define VCMP_DO(suffix, compare, element, record) \
2177 void helper_vcmp##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2178 { \
2179 uint32_t ones = (uint32_t)-1; \
2180 uint32_t all = ones; \
2181 uint32_t none = 0; \
2182 int i; \
2183 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2184 uint32_t result = (a->element[i] compare b->element[i] ? ones : 0x0); \
2185 switch (sizeof (a->element[0])) { \
2186 case 4: r->u32[i] = result; break; \
2187 case 2: r->u16[i] = result; break; \
2188 case 1: r->u8[i] = result; break; \
2189 } \
2190 all &= result; \
2191 none |= result; \
2192 } \
2193 if (record) { \
2194 env->crf[6] = ((all != 0) << 3) | ((none == 0) << 1); \
2195 } \
2196 }
2197 #define VCMP(suffix, compare, element) \
2198 VCMP_DO(suffix, compare, element, 0) \
2199 VCMP_DO(suffix##_dot, compare, element, 1)
2200 VCMP(equb, ==, u8)
2201 VCMP(equh, ==, u16)
2202 VCMP(equw, ==, u32)
2203 VCMP(gtub, >, u8)
2204 VCMP(gtuh, >, u16)
2205 VCMP(gtuw, >, u32)
2206 VCMP(gtsb, >, s8)
2207 VCMP(gtsh, >, s16)
2208 VCMP(gtsw, >, s32)
2209 #undef VCMP_DO
2210 #undef VCMP
2211
2212 #define VCMPFP_DO(suffix, compare, order, record) \
2213 void helper_vcmp##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2214 { \
2215 uint32_t ones = (uint32_t)-1; \
2216 uint32_t all = ones; \
2217 uint32_t none = 0; \
2218 int i; \
2219 for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
2220 uint32_t result; \
2221 int rel = float32_compare_quiet(a->f[i], b->f[i], &env->vec_status); \
2222 if (rel == float_relation_unordered) { \
2223 result = 0; \
2224 } else if (rel compare order) { \
2225 result = ones; \
2226 } else { \
2227 result = 0; \
2228 } \
2229 r->u32[i] = result; \
2230 all &= result; \
2231 none |= result; \
2232 } \
2233 if (record) { \
2234 env->crf[6] = ((all != 0) << 3) | ((none == 0) << 1); \
2235 } \
2236 }
2237 #define VCMPFP(suffix, compare, order) \
2238 VCMPFP_DO(suffix, compare, order, 0) \
2239 VCMPFP_DO(suffix##_dot, compare, order, 1)
2240 VCMPFP(eqfp, ==, float_relation_equal)
2241 VCMPFP(gefp, !=, float_relation_less)
2242 VCMPFP(gtfp, ==, float_relation_greater)
2243 #undef VCMPFP_DO
2244 #undef VCMPFP
2245
2246 static inline void vcmpbfp_internal(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
2247 int record)
2248 {
2249 int i;
2250 int all_in = 0;
2251 for (i = 0; i < ARRAY_SIZE(r->f); i++) {
2252 int le_rel = float32_compare_quiet(a->f[i], b->f[i], &env->vec_status);
2253 if (le_rel == float_relation_unordered) {
2254 r->u32[i] = 0xc0000000;
2255 /* ALL_IN does not need to be updated here. */
2256 } else {
2257 float32 bneg = float32_chs(b->f[i]);
2258 int ge_rel = float32_compare_quiet(a->f[i], bneg, &env->vec_status);
2259 int le = le_rel != float_relation_greater;
2260 int ge = ge_rel != float_relation_less;
2261 r->u32[i] = ((!le) << 31) | ((!ge) << 30);
2262 all_in |= (!le | !ge);
2263 }
2264 }
2265 if (record) {
2266 env->crf[6] = (all_in == 0) << 1;
2267 }
2268 }
2269
2270 void helper_vcmpbfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2271 {
2272 vcmpbfp_internal(r, a, b, 0);
2273 }
2274
2275 void helper_vcmpbfp_dot (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2276 {
2277 vcmpbfp_internal(r, a, b, 1);
2278 }
2279
2280 #define VCT(suffix, satcvt, element) \
2281 void helper_vct##suffix (ppc_avr_t *r, ppc_avr_t *b, uint32_t uim) \
2282 { \
2283 int i; \
2284 int sat = 0; \
2285 float_status s = env->vec_status; \
2286 set_float_rounding_mode(float_round_to_zero, &s); \
2287 for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
2288 if (float32_is_nan(b->f[i]) || \
2289 float32_is_signaling_nan(b->f[i])) { \
2290 r->element[i] = 0; \
2291 } else { \
2292 float64 t = float32_to_float64(b->f[i], &s); \
2293 int64_t j; \
2294 t = float64_scalbn(t, uim, &s); \
2295 j = float64_to_int64(t, &s); \
2296 r->element[i] = satcvt(j, &sat); \
2297 } \
2298 } \
2299 if (sat) { \
2300 env->vscr |= (1 << VSCR_SAT); \
2301 } \
2302 }
2303 VCT(uxs, cvtsduw, u32)
2304 VCT(sxs, cvtsdsw, s32)
2305 #undef VCT
2306
2307 void helper_vmaddfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2308 {
2309 int i;
2310 for (i = 0; i < ARRAY_SIZE(r->f); i++) {
2311 HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
2312 /* Need to do the computation in higher precision and round
2313 * once at the end. */
2314 float64 af, bf, cf, t;
2315 af = float32_to_float64(a->f[i], &env->vec_status);
2316 bf = float32_to_float64(b->f[i], &env->vec_status);
2317 cf = float32_to_float64(c->f[i], &env->vec_status);
2318 t = float64_mul(af, cf, &env->vec_status);
2319 t = float64_add(t, bf, &env->vec_status);
2320 r->f[i] = float64_to_float32(t, &env->vec_status);
2321 }
2322 }
2323 }
2324
2325 void helper_vmhaddshs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2326 {
2327 int sat = 0;
2328 int i;
2329
2330 for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
2331 int32_t prod = a->s16[i] * b->s16[i];
2332 int32_t t = (int32_t)c->s16[i] + (prod >> 15);
2333 r->s16[i] = cvtswsh (t, &sat);
2334 }
2335
2336 if (sat) {
2337 env->vscr |= (1 << VSCR_SAT);
2338 }
2339 }
2340
2341 void helper_vmhraddshs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2342 {
2343 int sat = 0;
2344 int i;
2345
2346 for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
2347 int32_t prod = a->s16[i] * b->s16[i] + 0x00004000;
2348 int32_t t = (int32_t)c->s16[i] + (prod >> 15);
2349 r->s16[i] = cvtswsh (t, &sat);
2350 }
2351
2352 if (sat) {
2353 env->vscr |= (1 << VSCR_SAT);
2354 }
2355 }
2356
2357 #define VMINMAX_DO(name, compare, element) \
2358 void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2359 { \
2360 int i; \
2361 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2362 if (a->element[i] compare b->element[i]) { \
2363 r->element[i] = b->element[i]; \
2364 } else { \
2365 r->element[i] = a->element[i]; \
2366 } \
2367 } \
2368 }
2369 #define VMINMAX(suffix, element) \
2370 VMINMAX_DO(min##suffix, >, element) \
2371 VMINMAX_DO(max##suffix, <, element)
2372 VMINMAX(sb, s8)
2373 VMINMAX(sh, s16)
2374 VMINMAX(sw, s32)
2375 VMINMAX(ub, u8)
2376 VMINMAX(uh, u16)
2377 VMINMAX(uw, u32)
2378 #undef VMINMAX_DO
2379 #undef VMINMAX
2380
2381 #define VMINMAXFP(suffix, rT, rF) \
2382 void helper_v##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2383 { \
2384 int i; \
2385 for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
2386 HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { \
2387 if (float32_lt_quiet(a->f[i], b->f[i], &env->vec_status)) { \
2388 r->f[i] = rT->f[i]; \
2389 } else { \
2390 r->f[i] = rF->f[i]; \
2391 } \
2392 } \
2393 } \
2394 }
2395 VMINMAXFP(minfp, a, b)
2396 VMINMAXFP(maxfp, b, a)
2397 #undef VMINMAXFP
2398
2399 void helper_vmladduhm (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2400 {
2401 int i;
2402 for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
2403 int32_t prod = a->s16[i] * b->s16[i];
2404 r->s16[i] = (int16_t) (prod + c->s16[i]);
2405 }
2406 }
2407
2408 #define VMRG_DO(name, element, highp) \
2409 void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2410 { \
2411 ppc_avr_t result; \
2412 int i; \
2413 size_t n_elems = ARRAY_SIZE(r->element); \
2414 for (i = 0; i < n_elems/2; i++) { \
2415 if (highp) { \
2416 result.element[i*2+HI_IDX] = a->element[i]; \
2417 result.element[i*2+LO_IDX] = b->element[i]; \
2418 } else { \
2419 result.element[n_elems - i*2 - (1+HI_IDX)] = b->element[n_elems - i - 1]; \
2420 result.element[n_elems - i*2 - (1+LO_IDX)] = a->element[n_elems - i - 1]; \
2421 } \
2422 } \
2423 *r = result; \
2424 }
2425 #if defined(HOST_WORDS_BIGENDIAN)
2426 #define MRGHI 0
2427 #define MRGLO 1
2428 #else
2429 #define MRGHI 1
2430 #define MRGLO 0
2431 #endif
2432 #define VMRG(suffix, element) \
2433 VMRG_DO(mrgl##suffix, element, MRGHI) \
2434 VMRG_DO(mrgh##suffix, element, MRGLO)
2435 VMRG(b, u8)
2436 VMRG(h, u16)
2437 VMRG(w, u32)
2438 #undef VMRG_DO
2439 #undef VMRG
2440 #undef MRGHI
2441 #undef MRGLO
2442
2443 void helper_vmsummbm (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2444 {
2445 int32_t prod[16];
2446 int i;
2447
2448 for (i = 0; i < ARRAY_SIZE(r->s8); i++) {
2449 prod[i] = (int32_t)a->s8[i] * b->u8[i];
2450 }
2451
2452 VECTOR_FOR_INORDER_I(i, s32) {
2453 r->s32[i] = c->s32[i] + prod[4*i] + prod[4*i+1] + prod[4*i+2] + prod[4*i+3];
2454 }
2455 }
2456
2457 void helper_vmsumshm (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2458 {
2459 int32_t prod[8];
2460 int i;
2461
2462 for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
2463 prod[i] = a->s16[i] * b->s16[i];
2464 }
2465
2466 VECTOR_FOR_INORDER_I(i, s32) {
2467 r->s32[i] = c->s32[i] + prod[2*i] + prod[2*i+1];
2468 }
2469 }
2470
2471 void helper_vmsumshs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2472 {
2473 int32_t prod[8];
2474 int i;
2475 int sat = 0;
2476
2477 for (i = 0; i < ARRAY_SIZE(r->s16); i++) {
2478 prod[i] = (int32_t)a->s16[i] * b->s16[i];
2479 }
2480
2481 VECTOR_FOR_INORDER_I (i, s32) {
2482 int64_t t = (int64_t)c->s32[i] + prod[2*i] + prod[2*i+1];
2483 r->u32[i] = cvtsdsw(t, &sat);
2484 }
2485
2486 if (sat) {
2487 env->vscr |= (1 << VSCR_SAT);
2488 }
2489 }
2490
2491 void helper_vmsumubm (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2492 {
2493 uint16_t prod[16];
2494 int i;
2495
2496 for (i = 0; i < ARRAY_SIZE(r->u8); i++) {
2497 prod[i] = a->u8[i] * b->u8[i];
2498 }
2499
2500 VECTOR_FOR_INORDER_I(i, u32) {
2501 r->u32[i] = c->u32[i] + prod[4*i] + prod[4*i+1] + prod[4*i+2] + prod[4*i+3];
2502 }
2503 }
2504
2505 void helper_vmsumuhm (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2506 {
2507 uint32_t prod[8];
2508 int i;
2509
2510 for (i = 0; i < ARRAY_SIZE(r->u16); i++) {
2511 prod[i] = a->u16[i] * b->u16[i];
2512 }
2513
2514 VECTOR_FOR_INORDER_I(i, u32) {
2515 r->u32[i] = c->u32[i] + prod[2*i] + prod[2*i+1];
2516 }
2517 }
2518
2519 void helper_vmsumuhs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2520 {
2521 uint32_t prod[8];
2522 int i;
2523 int sat = 0;
2524
2525 for (i = 0; i < ARRAY_SIZE(r->u16); i++) {
2526 prod[i] = a->u16[i] * b->u16[i];
2527 }
2528
2529 VECTOR_FOR_INORDER_I (i, s32) {
2530 uint64_t t = (uint64_t)c->u32[i] + prod[2*i] + prod[2*i+1];
2531 r->u32[i] = cvtuduw(t, &sat);
2532 }
2533
2534 if (sat) {
2535 env->vscr |= (1 << VSCR_SAT);
2536 }
2537 }
2538
2539 #define VMUL_DO(name, mul_element, prod_element, evenp) \
2540 void helper_v##name (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2541 { \
2542 int i; \
2543 VECTOR_FOR_INORDER_I(i, prod_element) { \
2544 if (evenp) { \
2545 r->prod_element[i] = a->mul_element[i*2+HI_IDX] * b->mul_element[i*2+HI_IDX]; \
2546 } else { \
2547 r->prod_element[i] = a->mul_element[i*2+LO_IDX] * b->mul_element[i*2+LO_IDX]; \
2548 } \
2549 } \
2550 }
2551 #define VMUL(suffix, mul_element, prod_element) \
2552 VMUL_DO(mule##suffix, mul_element, prod_element, 1) \
2553 VMUL_DO(mulo##suffix, mul_element, prod_element, 0)
2554 VMUL(sb, s8, s16)
2555 VMUL(sh, s16, s32)
2556 VMUL(ub, u8, u16)
2557 VMUL(uh, u16, u32)
2558 #undef VMUL_DO
2559 #undef VMUL
2560
2561 void helper_vnmsubfp (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2562 {
2563 int i;
2564 for (i = 0; i < ARRAY_SIZE(r->f); i++) {
2565 HANDLE_NAN3(r->f[i], a->f[i], b->f[i], c->f[i]) {
2566 /* Need to do the computation is higher precision and round
2567 * once at the end. */
2568 float64 af, bf, cf, t;
2569 af = float32_to_float64(a->f[i], &env->vec_status);
2570 bf = float32_to_float64(b->f[i], &env->vec_status);
2571 cf = float32_to_float64(c->f[i], &env->vec_status);
2572 t = float64_mul(af, cf, &env->vec_status);
2573 t = float64_sub(t, bf, &env->vec_status);
2574 t = float64_chs(t);
2575 r->f[i] = float64_to_float32(t, &env->vec_status);
2576 }
2577 }
2578 }
2579
2580 void helper_vperm (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2581 {
2582 ppc_avr_t result;
2583 int i;
2584 VECTOR_FOR_INORDER_I (i, u8) {
2585 int s = c->u8[i] & 0x1f;
2586 #if defined(HOST_WORDS_BIGENDIAN)
2587 int index = s & 0xf;
2588 #else
2589 int index = 15 - (s & 0xf);
2590 #endif
2591 if (s & 0x10) {
2592 result.u8[i] = b->u8[index];
2593 } else {
2594 result.u8[i] = a->u8[index];
2595 }
2596 }
2597 *r = result;
2598 }
2599
2600 #if defined(HOST_WORDS_BIGENDIAN)
2601 #define PKBIG 1
2602 #else
2603 #define PKBIG 0
2604 #endif
2605 void helper_vpkpx (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2606 {
2607 int i, j;
2608 ppc_avr_t result;
2609 #if defined(HOST_WORDS_BIGENDIAN)
2610 const ppc_avr_t *x[2] = { a, b };
2611 #else
2612 const ppc_avr_t *x[2] = { b, a };
2613 #endif
2614
2615 VECTOR_FOR_INORDER_I (i, u64) {
2616 VECTOR_FOR_INORDER_I (j, u32){
2617 uint32_t e = x[i]->u32[j];
2618 result.u16[4*i+j] = (((e >> 9) & 0xfc00) |
2619 ((e >> 6) & 0x3e0) |
2620 ((e >> 3) & 0x1f));
2621 }
2622 }
2623 *r = result;
2624 }
2625
2626 #define VPK(suffix, from, to, cvt, dosat) \
2627 void helper_vpk##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2628 { \
2629 int i; \
2630 int sat = 0; \
2631 ppc_avr_t result; \
2632 ppc_avr_t *a0 = PKBIG ? a : b; \
2633 ppc_avr_t *a1 = PKBIG ? b : a; \
2634 VECTOR_FOR_INORDER_I (i, from) { \
2635 result.to[i] = cvt(a0->from[i], &sat); \
2636 result.to[i+ARRAY_SIZE(r->from)] = cvt(a1->from[i], &sat); \
2637 } \
2638 *r = result; \
2639 if (dosat && sat) { \
2640 env->vscr |= (1 << VSCR_SAT); \
2641 } \
2642 }
2643 #define I(x, y) (x)
2644 VPK(shss, s16, s8, cvtshsb, 1)
2645 VPK(shus, s16, u8, cvtshub, 1)
2646 VPK(swss, s32, s16, cvtswsh, 1)
2647 VPK(swus, s32, u16, cvtswuh, 1)
2648 VPK(uhus, u16, u8, cvtuhub, 1)
2649 VPK(uwus, u32, u16, cvtuwuh, 1)
2650 VPK(uhum, u16, u8, I, 0)
2651 VPK(uwum, u32, u16, I, 0)
2652 #undef I
2653 #undef VPK
2654 #undef PKBIG
2655
2656 void helper_vrefp (ppc_avr_t *r, ppc_avr_t *b)
2657 {
2658 int i;
2659 for (i = 0; i < ARRAY_SIZE(r->f); i++) {
2660 HANDLE_NAN1(r->f[i], b->f[i]) {
2661 r->f[i] = float32_div(float32_one, b->f[i], &env->vec_status);
2662 }
2663 }
2664 }
2665
2666 #define VRFI(suffix, rounding) \
2667 void helper_vrfi##suffix (ppc_avr_t *r, ppc_avr_t *b) \
2668 { \
2669 int i; \
2670 float_status s = env->vec_status; \
2671 set_float_rounding_mode(rounding, &s); \
2672 for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
2673 HANDLE_NAN1(r->f[i], b->f[i]) { \
2674 r->f[i] = float32_round_to_int (b->f[i], &s); \
2675 } \
2676 } \
2677 }
2678 VRFI(n, float_round_nearest_even)
2679 VRFI(m, float_round_down)
2680 VRFI(p, float_round_up)
2681 VRFI(z, float_round_to_zero)
2682 #undef VRFI
2683
2684 #define VROTATE(suffix, element) \
2685 void helper_vrl##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2686 { \
2687 int i; \
2688 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2689 unsigned int mask = ((1 << (3 + (sizeof (a->element[0]) >> 1))) - 1); \
2690 unsigned int shift = b->element[i] & mask; \
2691 r->element[i] = (a->element[i] << shift) | (a->element[i] >> (sizeof(a->element[0]) * 8 - shift)); \
2692 } \
2693 }
2694 VROTATE(b, u8)
2695 VROTATE(h, u16)
2696 VROTATE(w, u32)
2697 #undef VROTATE
2698
2699 void helper_vrsqrtefp (ppc_avr_t *r, ppc_avr_t *b)
2700 {
2701 int i;
2702 for (i = 0; i < ARRAY_SIZE(r->f); i++) {
2703 HANDLE_NAN1(r->f[i], b->f[i]) {
2704 float32 t = float32_sqrt(b->f[i], &env->vec_status);
2705 r->f[i] = float32_div(float32_one, t, &env->vec_status);
2706 }
2707 }
2708 }
2709
2710 void helper_vsel (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, ppc_avr_t *c)
2711 {
2712 r->u64[0] = (a->u64[0] & ~c->u64[0]) | (b->u64[0] & c->u64[0]);
2713 r->u64[1] = (a->u64[1] & ~c->u64[1]) | (b->u64[1] & c->u64[1]);
2714 }
2715
2716 void helper_vlogefp (ppc_avr_t *r, ppc_avr_t *b)
2717 {
2718 int i;
2719 for (i = 0; i < ARRAY_SIZE(r->f); i++) {
2720 HANDLE_NAN1(r->f[i], b->f[i]) {
2721 r->f[i] = float32_log2(b->f[i], &env->vec_status);
2722 }
2723 }
2724 }
2725
2726 #if defined(HOST_WORDS_BIGENDIAN)
2727 #define LEFT 0
2728 #define RIGHT 1
2729 #else
2730 #define LEFT 1
2731 #define RIGHT 0
2732 #endif
2733 /* The specification says that the results are undefined if all of the
2734 * shift counts are not identical. We check to make sure that they are
2735 * to conform to what real hardware appears to do. */
2736 #define VSHIFT(suffix, leftp) \
2737 void helper_vs##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2738 { \
2739 int shift = b->u8[LO_IDX*15] & 0x7; \
2740 int doit = 1; \
2741 int i; \
2742 for (i = 0; i < ARRAY_SIZE(r->u8); i++) { \
2743 doit = doit && ((b->u8[i] & 0x7) == shift); \
2744 } \
2745 if (doit) { \
2746 if (shift == 0) { \
2747 *r = *a; \
2748 } else if (leftp) { \
2749 uint64_t carry = a->u64[LO_IDX] >> (64 - shift); \
2750 r->u64[HI_IDX] = (a->u64[HI_IDX] << shift) | carry; \
2751 r->u64[LO_IDX] = a->u64[LO_IDX] << shift; \
2752 } else { \
2753 uint64_t carry = a->u64[HI_IDX] << (64 - shift); \
2754 r->u64[LO_IDX] = (a->u64[LO_IDX] >> shift) | carry; \
2755 r->u64[HI_IDX] = a->u64[HI_IDX] >> shift; \
2756 } \
2757 } \
2758 }
2759 VSHIFT(l, LEFT)
2760 VSHIFT(r, RIGHT)
2761 #undef VSHIFT
2762 #undef LEFT
2763 #undef RIGHT
2764
2765 #define VSL(suffix, element) \
2766 void helper_vsl##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2767 { \
2768 int i; \
2769 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2770 unsigned int mask = ((1 << (3 + (sizeof (a->element[0]) >> 1))) - 1); \
2771 unsigned int shift = b->element[i] & mask; \
2772 r->element[i] = a->element[i] << shift; \
2773 } \
2774 }
2775 VSL(b, u8)
2776 VSL(h, u16)
2777 VSL(w, u32)
2778 #undef VSL
2779
2780 void helper_vsldoi (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t shift)
2781 {
2782 int sh = shift & 0xf;
2783 int i;
2784 ppc_avr_t result;
2785
2786 #if defined(HOST_WORDS_BIGENDIAN)
2787 for (i = 0; i < ARRAY_SIZE(r->u8); i++) {
2788 int index = sh + i;
2789 if (index > 0xf) {
2790 result.u8[i] = b->u8[index-0x10];
2791 } else {
2792 result.u8[i] = a->u8[index];
2793 }
2794 }
2795 #else
2796 for (i = 0; i < ARRAY_SIZE(r->u8); i++) {
2797 int index = (16 - sh) + i;
2798 if (index > 0xf) {
2799 result.u8[i] = a->u8[index-0x10];
2800 } else {
2801 result.u8[i] = b->u8[index];
2802 }
2803 }
2804 #endif
2805 *r = result;
2806 }
2807
2808 void helper_vslo (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2809 {
2810 int sh = (b->u8[LO_IDX*0xf] >> 3) & 0xf;
2811
2812 #if defined (HOST_WORDS_BIGENDIAN)
2813 memmove (&r->u8[0], &a->u8[sh], 16-sh);
2814 memset (&r->u8[16-sh], 0, sh);
2815 #else
2816 memmove (&r->u8[sh], &a->u8[0], 16-sh);
2817 memset (&r->u8[0], 0, sh);
2818 #endif
2819 }
2820
2821 /* Experimental testing shows that hardware masks the immediate. */
2822 #define _SPLAT_MASKED(element) (splat & (ARRAY_SIZE(r->element) - 1))
2823 #if defined(HOST_WORDS_BIGENDIAN)
2824 #define SPLAT_ELEMENT(element) _SPLAT_MASKED(element)
2825 #else
2826 #define SPLAT_ELEMENT(element) (ARRAY_SIZE(r->element)-1 - _SPLAT_MASKED(element))
2827 #endif
2828 #define VSPLT(suffix, element) \
2829 void helper_vsplt##suffix (ppc_avr_t *r, ppc_avr_t *b, uint32_t splat) \
2830 { \
2831 uint32_t s = b->element[SPLAT_ELEMENT(element)]; \
2832 int i; \
2833 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2834 r->element[i] = s; \
2835 } \
2836 }
2837 VSPLT(b, u8)
2838 VSPLT(h, u16)
2839 VSPLT(w, u32)
2840 #undef VSPLT
2841 #undef SPLAT_ELEMENT
2842 #undef _SPLAT_MASKED
2843
2844 #define VSPLTI(suffix, element, splat_type) \
2845 void helper_vspltis##suffix (ppc_avr_t *r, uint32_t splat) \
2846 { \
2847 splat_type x = (int8_t)(splat << 3) >> 3; \
2848 int i; \
2849 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2850 r->element[i] = x; \
2851 } \
2852 }
2853 VSPLTI(b, s8, int8_t)
2854 VSPLTI(h, s16, int16_t)
2855 VSPLTI(w, s32, int32_t)
2856 #undef VSPLTI
2857
2858 #define VSR(suffix, element) \
2859 void helper_vsr##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
2860 { \
2861 int i; \
2862 for (i = 0; i < ARRAY_SIZE(r->element); i++) { \
2863 unsigned int mask = ((1 << (3 + (sizeof (a->element[0]) >> 1))) - 1); \
2864 unsigned int shift = b->element[i] & mask; \
2865 r->element[i] = a->element[i] >> shift; \
2866 } \
2867 }
2868 VSR(ab, s8)
2869 VSR(ah, s16)
2870 VSR(aw, s32)
2871 VSR(b, u8)
2872 VSR(h, u16)
2873 VSR(w, u32)
2874 #undef VSR
2875
2876 void helper_vsro (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2877 {
2878 int sh = (b->u8[LO_IDX*0xf] >> 3) & 0xf;
2879
2880 #if defined (HOST_WORDS_BIGENDIAN)
2881 memmove (&r->u8[sh], &a->u8[0], 16-sh);
2882 memset (&r->u8[0], 0, sh);
2883 #else
2884 memmove (&r->u8[0], &a->u8[sh], 16-sh);
2885 memset (&r->u8[16-sh], 0, sh);
2886 #endif
2887 }
2888
2889 void helper_vsubcuw (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2890 {
2891 int i;
2892 for (i = 0; i < ARRAY_SIZE(r->u32); i++) {
2893 r->u32[i] = a->u32[i] >= b->u32[i];
2894 }
2895 }
2896
2897 void helper_vsumsws (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2898 {
2899 int64_t t;
2900 int i, upper;
2901 ppc_avr_t result;
2902 int sat = 0;
2903
2904 #if defined(HOST_WORDS_BIGENDIAN)
2905 upper = ARRAY_SIZE(r->s32)-1;
2906 #else
2907 upper = 0;
2908 #endif
2909 t = (int64_t)b->s32[upper];
2910 for (i = 0; i < ARRAY_SIZE(r->s32); i++) {
2911 t += a->s32[i];
2912 result.s32[i] = 0;
2913 }
2914 result.s32[upper] = cvtsdsw(t, &sat);
2915 *r = result;
2916
2917 if (sat) {
2918 env->vscr |= (1 << VSCR_SAT);
2919 }
2920 }
2921
2922 void helper_vsum2sws (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2923 {
2924 int i, j, upper;
2925 ppc_avr_t result;
2926 int sat = 0;
2927
2928 #if defined(HOST_WORDS_BIGENDIAN)
2929 upper = 1;
2930 #else
2931 upper = 0;
2932 #endif
2933 for (i = 0; i < ARRAY_SIZE(r->u64); i++) {
2934 int64_t t = (int64_t)b->s32[upper+i*2];
2935 result.u64[i] = 0;
2936 for (j = 0; j < ARRAY_SIZE(r->u64); j++) {
2937 t += a->s32[2*i+j];
2938 }
2939 result.s32[upper+i*2] = cvtsdsw(t, &sat);
2940 }
2941
2942 *r = result;
2943 if (sat) {
2944 env->vscr |= (1 << VSCR_SAT);
2945 }
2946 }
2947
2948 void helper_vsum4sbs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2949 {
2950 int i, j;
2951 int sat = 0;
2952
2953 for (i = 0; i < ARRAY_SIZE(r->s32); i++) {
2954 int64_t t = (int64_t)b->s32[i];
2955 for (j = 0; j < ARRAY_SIZE(r->s32); j++) {
2956 t += a->s8[4*i+j];
2957 }
2958 r->s32[i] = cvtsdsw(t, &sat);
2959 }
2960
2961 if (sat) {
2962 env->vscr |= (1 << VSCR_SAT);
2963 }
2964 }
2965
2966 void helper_vsum4shs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2967 {
2968 int sat = 0;
2969 int i;
2970
2971 for (i = 0; i < ARRAY_SIZE(r->s32); i++) {
2972 int64_t t = (int64_t)b->s32[i];
2973 t += a->s16[2*i] + a->s16[2*i+1];
2974 r->s32[i] = cvtsdsw(t, &sat);
2975 }
2976
2977 if (sat) {
2978 env->vscr |= (1 << VSCR_SAT);
2979 }
2980 }
2981
2982 void helper_vsum4ubs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
2983 {
2984 int i, j;
2985 int sat = 0;
2986
2987 for (i = 0; i < ARRAY_SIZE(r->u32); i++) {
2988 uint64_t t = (uint64_t)b->u32[i];
2989 for (j = 0; j < ARRAY_SIZE(r->u32); j++) {
2990 t += a->u8[4*i+j];
2991 }
2992 r->u32[i] = cvtuduw(t, &sat);
2993 }
2994
2995 if (sat) {
2996 env->vscr |= (1 << VSCR_SAT);
2997 }
2998 }
2999
3000 #if defined(HOST_WORDS_BIGENDIAN)
3001 #define UPKHI 1
3002 #define UPKLO 0
3003 #else
3004 #define UPKHI 0
3005 #define UPKLO 1
3006 #endif
3007 #define VUPKPX(suffix, hi) \
3008 void helper_vupk##suffix (ppc_avr_t *r, ppc_avr_t *b) \
3009 { \
3010 int i; \
3011 ppc_avr_t result; \
3012 for (i = 0; i < ARRAY_SIZE(r->u32); i++) { \
3013 uint16_t e = b->u16[hi ? i : i+4]; \
3014 uint8_t a = (e >> 15) ? 0xff : 0; \
3015 uint8_t r = (e >> 10) & 0x1f; \
3016 uint8_t g = (e >> 5) & 0x1f; \
3017 uint8_t b = e & 0x1f; \
3018 result.u32[i] = (a << 24) | (r << 16) | (g << 8) | b; \
3019 } \
3020 *r = result; \
3021 }
3022 VUPKPX(lpx, UPKLO)
3023 VUPKPX(hpx, UPKHI)
3024 #undef VUPKPX
3025
3026 #define VUPK(suffix, unpacked, packee, hi) \
3027 void helper_vupk##suffix (ppc_avr_t *r, ppc_avr_t *b) \
3028 { \
3029 int i; \
3030 ppc_avr_t result; \
3031 if (hi) { \
3032 for (i = 0; i < ARRAY_SIZE(r->unpacked); i++) { \
3033 result.unpacked[i] = b->packee[i]; \
3034 } \
3035 } else { \
3036 for (i = ARRAY_SIZE(r->unpacked); i < ARRAY_SIZE(r->packee); i++) { \
3037 result.unpacked[i-ARRAY_SIZE(r->unpacked)] = b->packee[i]; \
3038 } \
3039 } \
3040 *r = result; \
3041 }
3042 VUPK(hsb, s16, s8, UPKHI)
3043 VUPK(hsh, s32, s16, UPKHI)
3044 VUPK(lsb, s16, s8, UPKLO)
3045 VUPK(lsh, s32, s16, UPKLO)
3046 #undef VUPK
3047 #undef UPKHI
3048 #undef UPKLO
3049
3050 #undef DO_HANDLE_NAN
3051 #undef HANDLE_NAN1
3052 #undef HANDLE_NAN2
3053 #undef HANDLE_NAN3
3054 #undef VECTOR_FOR_INORDER_I
3055 #undef HI_IDX
3056 #undef LO_IDX
3057
3058 /*****************************************************************************/
3059 /* SPE extension helpers */
3060 /* Use a table to make this quicker */
3061 static uint8_t hbrev[16] = {
3062 0x0, 0x8, 0x4, 0xC, 0x2, 0xA, 0x6, 0xE,
3063 0x1, 0x9, 0x5, 0xD, 0x3, 0xB, 0x7, 0xF,
3064 };
3065
3066 static inline uint8_t byte_reverse(uint8_t val)
3067 {
3068 return hbrev[val >> 4] | (hbrev[val & 0xF] << 4);
3069 }
3070
3071 static inline uint32_t word_reverse(uint32_t val)
3072 {
3073 return byte_reverse(val >> 24) | (byte_reverse(val >> 16) << 8) |
3074 (byte_reverse(val >> 8) << 16) | (byte_reverse(val) << 24);
3075 }
3076
3077 #define MASKBITS 16 // Random value - to be fixed (implementation dependant)
3078 target_ulong helper_brinc (target_ulong arg1, target_ulong arg2)
3079 {
3080 uint32_t a, b, d, mask;
3081
3082 mask = UINT32_MAX >> (32 - MASKBITS);
3083 a = arg1 & mask;
3084 b = arg2 & mask;
3085 d = word_reverse(1 + word_reverse(a | ~b));
3086 return (arg1 & ~mask) | (d & b);
3087 }
3088
3089 uint32_t helper_cntlsw32 (uint32_t val)
3090 {
3091 if (val & 0x80000000)
3092 return clz32(~val);
3093 else
3094 return clz32(val);
3095 }
3096
3097 uint32_t helper_cntlzw32 (uint32_t val)
3098 {
3099 return clz32(val);
3100 }
3101
3102 /* Single-precision floating-point conversions */
3103 static inline uint32_t efscfsi(uint32_t val)
3104 {
3105 CPU_FloatU u;
3106
3107 u.f = int32_to_float32(val, &env->vec_status);
3108
3109 return u.l;
3110 }
3111
3112 static inline uint32_t efscfui(uint32_t val)
3113 {
3114 CPU_FloatU u;
3115
3116 u.f = uint32_to_float32(val, &env->vec_status);
3117
3118 return u.l;
3119 }
3120
3121 static inline int32_t efsctsi(uint32_t val)
3122 {
3123 CPU_FloatU u;
3124
3125 u.l = val;
3126 /* NaN are not treated the same way IEEE 754 does */
3127 if (unlikely(float32_is_nan(u.f)))
3128 return 0;
3129
3130 return float32_to_int32(u.f, &env->vec_status);
3131 }
3132
3133 static inline uint32_t efsctui(uint32_t val)
3134 {
3135 CPU_FloatU u;
3136
3137 u.l = val;
3138 /* NaN are not treated the same way IEEE 754 does */
3139 if (unlikely(float32_is_nan(u.f)))
3140 return 0;
3141
3142 return float32_to_uint32(u.f, &env->vec_status);
3143 }
3144
3145 static inline uint32_t efsctsiz(uint32_t val)
3146 {
3147 CPU_FloatU u;
3148
3149 u.l = val;
3150 /* NaN are not treated the same way IEEE 754 does */
3151 if (unlikely(float32_is_nan(u.f)))
3152 return 0;
3153
3154 return float32_to_int32_round_to_zero(u.f, &env->vec_status);
3155 }
3156
3157 static inline uint32_t efsctuiz(uint32_t val)
3158 {
3159 CPU_FloatU u;
3160
3161 u.l = val;
3162 /* NaN are not treated the same way IEEE 754 does */
3163 if (unlikely(float32_is_nan(u.f)))
3164 return 0;
3165
3166 return float32_to_uint32_round_to_zero(u.f, &env->vec_status);
3167 }
3168
3169 static inline uint32_t efscfsf(uint32_t val)
3170 {
3171 CPU_FloatU u;
3172 float32 tmp;
3173
3174 u.f = int32_to_float32(val, &env->vec_status);
3175 tmp = int64_to_float32(1ULL << 32, &env->vec_status);
3176 u.f = float32_div(u.f, tmp, &env->vec_status);
3177
3178 return u.l;
3179 }
3180
3181 static inline uint32_t efscfuf(uint32_t val)
3182 {
3183 CPU_FloatU u;
3184 float32 tmp;
3185
3186 u.f = uint32_to_float32(val, &env->vec_status);
3187 tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
3188 u.f = float32_div(u.f, tmp, &env->vec_status);
3189
3190 return u.l;
3191 }
3192
3193 static inline uint32_t efsctsf(uint32_t val)
3194 {
3195 CPU_FloatU u;
3196 float32 tmp;
3197
3198 u.l = val;
3199 /* NaN are not treated the same way IEEE 754 does */
3200 if (unlikely(float32_is_nan(u.f)))
3201 return 0;
3202 tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
3203 u.f = float32_mul(u.f, tmp, &env->vec_status);
3204
3205 return float32_to_int32(u.f, &env->vec_status);
3206 }
3207
3208 static inline uint32_t efsctuf(uint32_t val)
3209 {
3210 CPU_FloatU u;
3211 float32 tmp;
3212
3213 u.l = val;
3214 /* NaN are not treated the same way IEEE 754 does */
3215 if (unlikely(float32_is_nan(u.f)))
3216 return 0;
3217 tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
3218 u.f = float32_mul(u.f, tmp, &env->vec_status);
3219
3220 return float32_to_uint32(u.f, &env->vec_status);
3221 }
3222
3223 #define HELPER_SPE_SINGLE_CONV(name) \
3224 uint32_t helper_e##name (uint32_t val) \
3225 { \
3226 return e##name(val); \
3227 }
3228 /* efscfsi */
3229 HELPER_SPE_SINGLE_CONV(fscfsi);
3230 /* efscfui */
3231 HELPER_SPE_SINGLE_CONV(fscfui);
3232 /* efscfuf */
3233 HELPER_SPE_SINGLE_CONV(fscfuf);
3234 /* efscfsf */
3235 HELPER_SPE_SINGLE_CONV(fscfsf);
3236 /* efsctsi */
3237 HELPER_SPE_SINGLE_CONV(fsctsi);
3238 /* efsctui */
3239 HELPER_SPE_SINGLE_CONV(fsctui);
3240 /* efsctsiz */
3241 HELPER_SPE_SINGLE_CONV(fsctsiz);
3242 /* efsctuiz */
3243 HELPER_SPE_SINGLE_CONV(fsctuiz);
3244 /* efsctsf */
3245 HELPER_SPE_SINGLE_CONV(fsctsf);
3246 /* efsctuf */
3247 HELPER_SPE_SINGLE_CONV(fsctuf);
3248
3249 #define HELPER_SPE_VECTOR_CONV(name) \
3250 uint64_t helper_ev##name (uint64_t val) \
3251 { \
3252 return ((uint64_t)e##name(val >> 32) << 32) | \
3253 (uint64_t)e##name(val); \
3254 }
3255 /* evfscfsi */
3256 HELPER_SPE_VECTOR_CONV(fscfsi);
3257 /* evfscfui */
3258 HELPER_SPE_VECTOR_CONV(fscfui);
3259 /* evfscfuf */
3260 HELPER_SPE_VECTOR_CONV(fscfuf);
3261 /* evfscfsf */
3262 HELPER_SPE_VECTOR_CONV(fscfsf);
3263 /* evfsctsi */
3264 HELPER_SPE_VECTOR_CONV(fsctsi);
3265 /* evfsctui */
3266 HELPER_SPE_VECTOR_CONV(fsctui);
3267 /* evfsctsiz */
3268 HELPER_SPE_VECTOR_CONV(fsctsiz);
3269 /* evfsctuiz */
3270 HELPER_SPE_VECTOR_CONV(fsctuiz);
3271 /* evfsctsf */
3272 HELPER_SPE_VECTOR_CONV(fsctsf);
3273 /* evfsctuf */
3274 HELPER_SPE_VECTOR_CONV(fsctuf);
3275
3276 /* Single-precision floating-point arithmetic */
3277 static inline uint32_t efsadd(uint32_t op1, uint32_t op2)
3278 {
3279 CPU_FloatU u1, u2;
3280 u1.l = op1;
3281 u2.l = op2;
3282 u1.f = float32_add(u1.f, u2.f, &env->vec_status);
3283 return u1.l;
3284 }
3285
3286 static inline uint32_t efssub(uint32_t op1, uint32_t op2)
3287 {
3288 CPU_FloatU u1, u2;
3289 u1.l = op1;
3290 u2.l = op2;
3291 u1.f = float32_sub(u1.f, u2.f, &env->vec_status);
3292 return u1.l;
3293 }
3294
3295 static inline uint32_t efsmul(uint32_t op1, uint32_t op2)
3296 {
3297 CPU_FloatU u1, u2;
3298 u1.l = op1;
3299 u2.l = op2;
3300 u1.f = float32_mul(u1.f, u2.f, &env->vec_status);
3301 return u1.l;
3302 }
3303
3304 static inline uint32_t efsdiv(uint32_t op1, uint32_t op2)
3305 {
3306 CPU_FloatU u1, u2;
3307 u1.l = op1;
3308 u2.l = op2;
3309 u1.f = float32_div(u1.f, u2.f, &env->vec_status);
3310 return u1.l;
3311 }
3312
3313 #define HELPER_SPE_SINGLE_ARITH(name) \
3314 uint32_t helper_e##name (uint32_t op1, uint32_t op2) \
3315 { \
3316 return e##name(op1, op2); \
3317 }
3318 /* efsadd */
3319 HELPER_SPE_SINGLE_ARITH(fsadd);
3320 /* efssub */
3321 HELPER_SPE_SINGLE_ARITH(fssub);
3322 /* efsmul */
3323 HELPER_SPE_SINGLE_ARITH(fsmul);
3324 /* efsdiv */
3325 HELPER_SPE_SINGLE_ARITH(fsdiv);
3326
3327 #define HELPER_SPE_VECTOR_ARITH(name) \
3328 uint64_t helper_ev##name (uint64_t op1, uint64_t op2) \
3329 { \
3330 return ((uint64_t)e##name(op1 >> 32, op2 >> 32) << 32) | \
3331 (uint64_t)e##name(op1, op2); \
3332 }
3333 /* evfsadd */
3334 HELPER_SPE_VECTOR_ARITH(fsadd);
3335 /* evfssub */
3336 HELPER_SPE_VECTOR_ARITH(fssub);
3337 /* evfsmul */
3338 HELPER_SPE_VECTOR_ARITH(fsmul);
3339 /* evfsdiv */
3340 HELPER_SPE_VECTOR_ARITH(fsdiv);
3341
3342 /* Single-precision floating-point comparisons */
3343 static inline uint32_t efststlt(uint32_t op1, uint32_t op2)
3344 {
3345 CPU_FloatU u1, u2;
3346 u1.l = op1;
3347 u2.l = op2;
3348 return float32_lt(u1.f, u2.f, &env->vec_status) ? 4 : 0;
3349 }
3350
3351 static inline uint32_t efststgt(uint32_t op1, uint32_t op2)
3352 {
3353 CPU_FloatU u1, u2;
3354 u1.l = op1;
3355 u2.l = op2;
3356 return float32_le(u1.f, u2.f, &env->vec_status) ? 0 : 4;
3357 }
3358
3359 static inline uint32_t efststeq(uint32_t op1, uint32_t op2)
3360 {
3361 CPU_FloatU u1, u2;
3362 u1.l = op1;
3363 u2.l = op2;
3364 return float32_eq(u1.f, u2.f, &env->vec_status) ? 4 : 0;
3365 }
3366
3367 static inline uint32_t efscmplt(uint32_t op1, uint32_t op2)
3368 {
3369 /* XXX: TODO: test special values (NaN, infinites, ...) */
3370 return efststlt(op1, op2);
3371 }
3372
3373 static inline uint32_t efscmpgt(uint32_t op1, uint32_t op2)
3374 {
3375 /* XXX: TODO: test special values (NaN, infinites, ...) */
3376 return efststgt(op1, op2);
3377 }
3378
3379 static inline uint32_t efscmpeq(uint32_t op1, uint32_t op2)
3380 {
3381 /* XXX: TODO: test special values (NaN, infinites, ...) */
3382 return efststeq(op1, op2);
3383 }
3384
3385 #define HELPER_SINGLE_SPE_CMP(name) \
3386 uint32_t helper_e##name (uint32_t op1, uint32_t op2) \
3387 { \
3388 return e##name(op1, op2) << 2; \
3389 }
3390 /* efststlt */
3391 HELPER_SINGLE_SPE_CMP(fststlt);
3392 /* efststgt */
3393 HELPER_SINGLE_SPE_CMP(fststgt);
3394 /* efststeq */
3395 HELPER_SINGLE_SPE_CMP(fststeq);
3396 /* efscmplt */
3397 HELPER_SINGLE_SPE_CMP(fscmplt);
3398 /* efscmpgt */
3399 HELPER_SINGLE_SPE_CMP(fscmpgt);
3400 /* efscmpeq */
3401 HELPER_SINGLE_SPE_CMP(fscmpeq);
3402
3403 static inline uint32_t evcmp_merge(int t0, int t1)
3404 {
3405 return (t0 << 3) | (t1 << 2) | ((t0 | t1) << 1) | (t0 & t1);
3406 }
3407
3408 #define HELPER_VECTOR_SPE_CMP(name) \
3409 uint32_t helper_ev##name (uint64_t op1, uint64_t op2) \
3410 { \
3411 return evcmp_merge(e##name(op1 >> 32, op2 >> 32), e##name(op1, op2)); \
3412 }
3413 /* evfststlt */
3414 HELPER_VECTOR_SPE_CMP(fststlt);
3415 /* evfststgt */
3416 HELPER_VECTOR_SPE_CMP(fststgt);
3417 /* evfststeq */
3418 HELPER_VECTOR_SPE_CMP(fststeq);
3419 /* evfscmplt */
3420 HELPER_VECTOR_SPE_CMP(fscmplt);
3421 /* evfscmpgt */
3422 HELPER_VECTOR_SPE_CMP(fscmpgt);
3423 /* evfscmpeq */
3424 HELPER_VECTOR_SPE_CMP(fscmpeq);
3425
3426 /* Double-precision floating-point conversion */
3427 uint64_t helper_efdcfsi (uint32_t val)
3428 {
3429 CPU_DoubleU u;
3430
3431 u.d = int32_to_float64(val, &env->vec_status);
3432
3433 return u.ll;
3434 }
3435
3436 uint64_t helper_efdcfsid (uint64_t val)
3437 {
3438 CPU_DoubleU u;
3439
3440 u.d = int64_to_float64(val, &env->vec_status);
3441
3442 return u.ll;
3443 }
3444
3445 uint64_t helper_efdcfui (uint32_t val)
3446 {
3447 CPU_DoubleU u;
3448
3449 u.d = uint32_to_float64(val, &env->vec_status);
3450
3451 return u.ll;
3452 }
3453
3454 uint64_t helper_efdcfuid (uint64_t val)
3455 {
3456 CPU_DoubleU u;
3457
3458 u.d = uint64_to_float64(val, &env->vec_status);
3459
3460 return u.ll;
3461 }
3462
3463 uint32_t helper_efdctsi (uint64_t val)
3464 {
3465 CPU_DoubleU u;
3466
3467 u.ll = val;
3468 /* NaN are not treated the same way IEEE 754 does */
3469 if (unlikely(float64_is_nan(u.d)))
3470 return 0;
3471
3472 return float64_to_int32(u.d, &env->vec_status);
3473 }
3474
3475 uint32_t helper_efdctui (uint64_t val)
3476 {
3477 CPU_DoubleU u;
3478
3479 u.ll = val;
3480 /* NaN are not treated the same way IEEE 754 does */
3481 if (unlikely(float64_is_nan(u.d)))
3482 return 0;
3483
3484 return float64_to_uint32(u.d, &env->vec_status);
3485 }
3486
3487 uint32_t helper_efdctsiz (uint64_t val)
3488 {
3489 CPU_DoubleU u;
3490
3491 u.ll = val;
3492 /* NaN are not treated the same way IEEE 754 does */
3493 if (unlikely(float64_is_nan(u.d)))
3494 return 0;
3495
3496 return float64_to_int32_round_to_zero(u.d, &env->vec_status);
3497 }
3498
3499 uint64_t helper_efdctsidz (uint64_t val)
3500 {
3501 CPU_DoubleU u;
3502
3503 u.ll = val;
3504 /* NaN are not treated the same way IEEE 754 does */
3505 if (unlikely(float64_is_nan(u.d)))
3506 return 0;
3507
3508 return float64_to_int64_round_to_zero(u.d, &env->vec_status);
3509 }
3510
3511 uint32_t helper_efdctuiz (uint64_t val)
3512 {
3513 CPU_DoubleU u;
3514
3515 u.ll = val;
3516 /* NaN are not treated the same way IEEE 754 does */
3517 if (unlikely(float64_is_nan(u.d)))
3518 return 0;
3519
3520 return float64_to_uint32_round_to_zero(u.d, &env->vec_status);
3521 }
3522
3523 uint64_t helper_efdctuidz (uint64_t val)
3524 {
3525 CPU_DoubleU u;
3526
3527 u.ll = val;
3528 /* NaN are not treated the same way IEEE 754 does */
3529 if (unlikely(float64_is_nan(u.d)))
3530 return 0;
3531
3532 return float64_to_uint64_round_to_zero(u.d, &env->vec_status);
3533 }
3534
3535 uint64_t helper_efdcfsf (uint32_t val)
3536 {
3537 CPU_DoubleU u;
3538 float64 tmp;
3539
3540 u.d = int32_to_float64(val, &env->vec_status);
3541 tmp = int64_to_float64(1ULL << 32, &env->vec_status);
3542 u.d = float64_div(u.d, tmp, &env->vec_status);
3543
3544 return u.ll;
3545 }
3546
3547 uint64_t helper_efdcfuf (uint32_t val)
3548 {
3549 CPU_DoubleU u;
3550 float64 tmp;
3551
3552 u.d = uint32_to_float64(val, &env->vec_status);
3553 tmp = int64_to_float64(1ULL << 32, &env->vec_status);
3554 u.d = float64_div(u.d, tmp, &env->vec_status);
3555
3556 return u.ll;
3557 }
3558
3559 uint32_t helper_efdctsf (uint64_t val)
3560 {
3561 CPU_DoubleU u;
3562 float64 tmp;
3563
3564 u.ll = val;
3565 /* NaN are not treated the same way IEEE 754 does */
3566 if (unlikely(float64_is_nan(u.d)))
3567 return 0;
3568 tmp = uint64_to_float64(1ULL << 32, &env->vec_status);
3569 u.d = float64_mul(u.d, tmp, &env->vec_status);
3570
3571 return float64_to_int32(u.d, &env->vec_status);
3572 }
3573
3574 uint32_t helper_efdctuf (uint64_t val)
3575 {
3576 CPU_DoubleU u;
3577 float64 tmp;
3578
3579 u.ll = val;
3580 /* NaN are not treated the same way IEEE 754 does */
3581 if (unlikely(float64_is_nan(u.d)))
3582 return 0;
3583 tmp = uint64_to_float64(1ULL << 32, &env->vec_status);
3584 u.d = float64_mul(u.d, tmp, &env->vec_status);
3585
3586 return float64_to_uint32(u.d, &env->vec_status);
3587 }
3588
3589 uint32_t helper_efscfd (uint64_t val)
3590 {
3591 CPU_DoubleU u1;
3592 CPU_FloatU u2;
3593
3594 u1.ll = val;
3595 u2.f = float64_to_float32(u1.d, &env->vec_status);
3596
3597 return u2.l;
3598 }
3599
3600 uint64_t helper_efdcfs (uint32_t val)
3601 {
3602 CPU_DoubleU u2;
3603 CPU_FloatU u1;
3604
3605 u1.l = val;
3606 u2.d = float32_to_float64(u1.f, &env->vec_status);
3607
3608 return u2.ll;
3609 }
3610
3611 /* Double precision fixed-point arithmetic */
3612 uint64_t helper_efdadd (uint64_t op1, uint64_t op2)
3613 {
3614 CPU_DoubleU u1, u2;
3615 u1.ll = op1;
3616 u2.ll = op2;
3617 u1.d = float64_add(u1.d, u2.d, &env->vec_status);
3618 return u1.ll;
3619 }
3620
3621 uint64_t helper_efdsub (uint64_t op1, uint64_t op2)
3622 {
3623 CPU_DoubleU u1, u2;
3624 u1.ll = op1;
3625 u2.ll = op2;
3626 u1.d = float64_sub(u1.d, u2.d, &env->vec_status);
3627 return u1.ll;
3628 }
3629
3630 uint64_t helper_efdmul (uint64_t op1, uint64_t op2)
3631 {
3632 CPU_DoubleU u1, u2;
3633 u1.ll = op1;
3634 u2.ll = op2;
3635 u1.d = float64_mul(u1.d, u2.d, &env->vec_status);
3636 return u1.ll;
3637 }
3638
3639 uint64_t helper_efddiv (uint64_t op1, uint64_t op2)
3640 {
3641 CPU_DoubleU u1, u2;
3642 u1.ll = op1;
3643 u2.ll = op2;
3644 u1.d = float64_div(u1.d, u2.d, &env->vec_status);
3645 return u1.ll;
3646 }
3647
3648 /* Double precision floating point helpers */
3649 uint32_t helper_efdtstlt (uint64_t op1, uint64_t op2)
3650 {
3651 CPU_DoubleU u1, u2;
3652 u1.ll = op1;
3653 u2.ll = op2;
3654 return float64_lt(u1.d, u2.d, &env->vec_status) ? 4 : 0;
3655 }
3656
3657 uint32_t helper_efdtstgt (uint64_t op1, uint64_t op2)
3658 {
3659 CPU_DoubleU u1, u2;
3660 u1.ll = op1;
3661 u2.ll = op2;
3662 return float64_le(u1.d, u2.d, &env->vec_status) ? 0 : 4;
3663 }
3664
3665 uint32_t helper_efdtsteq (uint64_t op1, uint64_t op2)
3666 {
3667 CPU_DoubleU u1, u2;
3668 u1.ll = op1;
3669 u2.ll = op2;
3670 return float64_eq(u1.d, u2.d, &env->vec_status) ? 4 : 0;
3671 }
3672
3673 uint32_t helper_efdcmplt (uint64_t op1, uint64_t op2)
3674 {
3675 /* XXX: TODO: test special values (NaN, infinites, ...) */
3676 return helper_efdtstlt(op1, op2);
3677 }
3678
3679 uint32_t helper_efdcmpgt (uint64_t op1, uint64_t op2)
3680 {
3681 /* XXX: TODO: test special values (NaN, infinites, ...) */
3682 return helper_efdtstgt(op1, op2);
3683 }
3684
3685 uint32_t helper_efdcmpeq (uint64_t op1, uint64_t op2)
3686 {
3687 /* XXX: TODO: test special values (NaN, infinites, ...) */
3688 return helper_efdtsteq(op1, op2);
3689 }
3690
3691 /*****************************************************************************/
3692 /* Softmmu support */
3693 #if !defined (CONFIG_USER_ONLY)
3694
3695 #define MMUSUFFIX _mmu
3696
3697 #define SHIFT 0
3698 #include "softmmu_template.h"
3699
3700 #define SHIFT 1
3701 #include "softmmu_template.h"
3702
3703 #define SHIFT 2
3704 #include "softmmu_template.h"
3705
3706 #define SHIFT 3
3707 #include "softmmu_template.h"
3708
3709 /* try to fill the TLB and return an exception if error. If retaddr is
3710 NULL, it means that the function was called in C code (i.e. not
3711 from generated code or from helper.c) */
3712 /* XXX: fix it to restore all registers */
3713 void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
3714 {
3715 TranslationBlock *tb;
3716 CPUState *saved_env;
3717 unsigned long pc;
3718 int ret;
3719
3720 /* XXX: hack to restore env in all cases, even if not called from
3721 generated code */
3722 saved_env = env;
3723 env = cpu_single_env;
3724 ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
3725 if (unlikely(ret != 0)) {
3726 if (likely(retaddr)) {
3727 /* now we have a real cpu fault */
3728 pc = (unsigned long)retaddr;
3729 tb = tb_find_pc(pc);
3730 if (likely(tb)) {
3731 /* the PC is inside the translated code. It means that we have
3732 a virtual CPU fault */
3733 cpu_restore_state(tb, env, pc, NULL);
3734 }
3735 }
3736 helper_raise_exception_err(env->exception_index, env->error_code);
3737 }
3738 env = saved_env;
3739 }
3740
3741 /* Segment registers load and store */
3742 target_ulong helper_load_sr (target_ulong sr_num)
3743 {
3744 #if defined(TARGET_PPC64)
3745 if (env->mmu_model & POWERPC_MMU_64)
3746 return ppc_load_sr(env, sr_num);
3747 #endif
3748 return env->sr[sr_num];
3749 }
3750
3751 void helper_store_sr (target_ulong sr_num, target_ulong val)
3752 {
3753 ppc_store_sr(env, sr_num, val);
3754 }
3755
3756 /* SLB management */
3757 #if defined(TARGET_PPC64)
3758 target_ulong helper_load_slb (target_ulong slb_nr)
3759 {
3760 return ppc_load_slb(env, slb_nr);
3761 }
3762
3763 void helper_store_slb (target_ulong rb, target_ulong rs)
3764 {
3765 ppc_store_slb(env, rb, rs);
3766 }
3767
3768 void helper_slbia (void)
3769 {
3770 ppc_slb_invalidate_all(env);
3771 }
3772
3773 void helper_slbie (target_ulong addr)
3774 {
3775 ppc_slb_invalidate_one(env, addr);
3776 }
3777
3778 #endif /* defined(TARGET_PPC64) */
3779
3780 /* TLB management */
3781 void helper_tlbia (void)
3782 {
3783 ppc_tlb_invalidate_all(env);
3784 }
3785
3786 void helper_tlbie (target_ulong addr)
3787 {
3788 ppc_tlb_invalidate_one(env, addr);
3789 }
3790
3791 /* Software driven TLBs management */
3792 /* PowerPC 602/603 software TLB load instructions helpers */
3793 static void do_6xx_tlb (target_ulong new_EPN, int is_code)
3794 {
3795 target_ulong RPN, CMP, EPN;
3796 int way;
3797
3798 RPN = env->spr[SPR_RPA];
3799 if (is_code) {
3800 CMP = env->spr[SPR_ICMP];
3801 EPN = env->spr[SPR_IMISS];
3802 } else {
3803 CMP = env->spr[SPR_DCMP];
3804 EPN = env->spr[SPR_DMISS];
3805 }
3806 way = (env->spr[SPR_SRR1] >> 17) & 1;
3807 LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
3808 " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP,
3809 RPN, way);
3810 /* Store this TLB */
3811 ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK),
3812 way, is_code, CMP, RPN);
3813 }
3814
3815 void helper_6xx_tlbd (target_ulong EPN)
3816 {
3817 do_6xx_tlb(EPN, 0);
3818 }
3819
3820 void helper_6xx_tlbi (target_ulong EPN)
3821 {
3822 do_6xx_tlb(EPN, 1);
3823 }
3824
3825 /* PowerPC 74xx software TLB load instructions helpers */
3826 static void do_74xx_tlb (target_ulong new_EPN, int is_code)
3827 {
3828 target_ulong RPN, CMP, EPN;
3829 int way;
3830
3831 RPN = env->spr[SPR_PTELO];
3832 CMP = env->spr[SPR_PTEHI];
3833 EPN = env->spr[SPR_TLBMISS] & ~0x3;
3834 way = env->spr[SPR_TLBMISS] & 0x3;
3835 LOG_SWTLB("%s: EPN " TARGET_FMT_lx " " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
3836 " PTE1 " TARGET_FMT_lx " way %d\n", __func__, new_EPN, EPN, CMP,
3837 RPN, way);
3838 /* Store this TLB */
3839 ppc6xx_tlb_store(env, (uint32_t)(new_EPN & TARGET_PAGE_MASK),
3840 way, is_code, CMP, RPN);
3841 }
3842
3843 void helper_74xx_tlbd (target_ulong EPN)
3844 {
3845 do_74xx_tlb(EPN, 0);
3846 }
3847
3848 void helper_74xx_tlbi (target_ulong EPN)
3849 {
3850 do_74xx_tlb(EPN, 1);
3851 }
3852
3853 static inline target_ulong booke_tlb_to_page_size(int size)
3854 {
3855 return 1024 << (2 * size);
3856 }
3857
3858 static inline int booke_page_size_to_tlb(target_ulong page_size)
3859 {
3860 int size;
3861
3862 switch (page_size) {
3863 case 0x00000400UL:
3864 size = 0x0;
3865 break;
3866 case 0x00001000UL:
3867 size = 0x1;
3868 break;
3869 case 0x00004000UL:
3870 size = 0x2;
3871 break;
3872 case 0x00010000UL:
3873 size = 0x3;
3874 break;
3875 case 0x00040000UL:
3876 size = 0x4;
3877 break;
3878 case 0x00100000UL:
3879 size = 0x5;
3880 break;
3881 case 0x00400000UL:
3882 size = 0x6;
3883 break;
3884 case 0x01000000UL:
3885 size = 0x7;
3886 break;
3887 case 0x04000000UL:
3888 size = 0x8;
3889 break;
3890 case 0x10000000UL:
3891 size = 0x9;
3892 break;
3893 case 0x40000000UL:
3894 size = 0xA;
3895 break;
3896 #if defined (TARGET_PPC64)
3897 case 0x000100000000ULL:
3898 size = 0xB;
3899 break;
3900 case 0x000400000000ULL:
3901 size = 0xC;
3902 break;
3903 case 0x001000000000ULL:
3904 size = 0xD;
3905 break;
3906 case 0x004000000000ULL:
3907 size = 0xE;
3908 break;
3909 case 0x010000000000ULL:
3910 size = 0xF;
3911 break;
3912 #endif
3913 default:
3914 size = -1;
3915 break;
3916 }
3917
3918 return size;
3919 }
3920
3921 /* Helpers for 4xx TLB management */
3922 target_ulong helper_4xx_tlbre_lo (target_ulong entry)
3923 {
3924 ppcemb_tlb_t *tlb;
3925 target_ulong ret;
3926 int size;
3927
3928 entry &= 0x3F;
3929 tlb = &env->tlb[entry].tlbe;
3930 ret = tlb->EPN;
3931 if (tlb->prot & PAGE_VALID)
3932 ret |= 0x400;
3933 size = booke_page_size_to_tlb(tlb->size);
3934 if (size < 0 || size > 0x7)
3935 size = 1;
3936 ret |= size << 7;
3937 env->spr[SPR_40x_PID] = tlb->PID;
3938 return ret;
3939 }
3940
3941 target_ulong helper_4xx_tlbre_hi (target_ulong entry)
3942 {
3943 ppcemb_tlb_t *tlb;
3944 target_ulong ret;
3945
3946 entry &= 0x3F;
3947 tlb = &env->tlb[entry].tlbe;
3948 ret = tlb->RPN;
3949 if (tlb->prot & PAGE_EXEC)
3950 ret |= 0x200;
3951 if (tlb->prot & PAGE_WRITE)
3952 ret |= 0x100;
3953 return ret;
3954 }
3955
3956 void helper_4xx_tlbwe_hi (target_ulong entry, target_ulong val)
3957 {
3958 ppcemb_tlb_t *tlb;
3959 target_ulong page, end;
3960
3961 LOG_SWTLB("%s entry %d val " TARGET_FMT_lx "\n", __func__, (int)entry,
3962 val);
3963 entry &= 0x3F;
3964 tlb = &env->tlb[entry].tlbe;
3965 /* Invalidate previous TLB (if it's valid) */
3966 if (tlb->prot & PAGE_VALID) {
3967 end = tlb->EPN + tlb->size;
3968 LOG_SWTLB("%s: invalidate old TLB %d start " TARGET_FMT_lx " end "
3969 TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end);
3970 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
3971 tlb_flush_page(env, page);
3972 }
3973 tlb->size = booke_tlb_to_page_size((val >> 7) & 0x7);
3974 /* We cannot handle TLB size < TARGET_PAGE_SIZE.
3975 * If this ever occurs, one should use the ppcemb target instead
3976 * of the ppc or ppc64 one
3977 */
3978 if ((val & 0x40) && tlb->size < TARGET_PAGE_SIZE) {
3979 cpu_abort(env, "TLB size " TARGET_FMT_lu " < %u "
3980 "are not supported (%d)\n",
3981 tlb->size, TARGET_PAGE_SIZE, (int)((val >> 7) & 0x7));
3982 }
3983 tlb->EPN = val & ~(tlb->size - 1);
3984 if (val & 0x40) {
3985 tlb->prot |= PAGE_VALID;
3986 if (val & 0x20) {
3987 /* XXX: TO BE FIXED */
3988 cpu_abort(env,
3989 "Little-endian TLB entries are not supported by now\n");
3990 }
3991 } else {
3992 tlb->prot &= ~PAGE_VALID;
3993 }
3994 tlb->PID = env->spr[SPR_40x_PID]; /* PID */
3995 LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx
3996 " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__,
3997 (int)entry, tlb->RPN, tlb->EPN, tlb->size,
3998 tlb->prot & PAGE_READ ? 'r' : '-',
3999 tlb->prot & PAGE_WRITE ? 'w' : '-',
4000 tlb->prot & PAGE_EXEC ? 'x' : '-',
4001 tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
4002 /* Invalidate new TLB (if valid) */
4003 if (tlb->prot & PAGE_VALID) {
4004 end = tlb->EPN + tlb->size;
4005 LOG_SWTLB("%s: invalidate TLB %d start " TARGET_FMT_lx " end "
4006 TARGET_FMT_lx "\n", __func__, (int)entry, tlb->EPN, end);
4007 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
4008 tlb_flush_page(env, page);
4009 }
4010 }
4011
4012 void helper_4xx_tlbwe_lo (target_ulong entry, target_ulong val)
4013 {
4014 ppcemb_tlb_t *tlb;
4015
4016 LOG_SWTLB("%s entry %i val " TARGET_FMT_lx "\n", __func__, (int)entry,
4017 val);
4018 entry &= 0x3F;
4019 tlb = &env->tlb[entry].tlbe;
4020 tlb->attr = val & 0xFF;
4021 tlb->RPN = val & 0xFFFFFC00;
4022 tlb->prot = PAGE_READ;
4023 if (val & 0x200)
4024 tlb->prot |= PAGE_EXEC;
4025 if (val & 0x100)
4026 tlb->prot |= PAGE_WRITE;
4027 LOG_SWTLB("%s: set up TLB %d RPN " TARGET_FMT_plx " EPN " TARGET_FMT_lx
4028 " size " TARGET_FMT_lx " prot %c%c%c%c PID %d\n", __func__,
4029 (int)entry, tlb->RPN, tlb->EPN, tlb->size,
4030 tlb->prot & PAGE_READ ? 'r' : '-',
4031 tlb->prot & PAGE_WRITE ? 'w' : '-',
4032 tlb->prot & PAGE_EXEC ? 'x' : '-',
4033 tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
4034 }
4035
4036 target_ulong helper_4xx_tlbsx (target_ulong address)
4037 {
4038 return ppcemb_tlb_search(env, address, env->spr[SPR_40x_PID]);
4039 }
4040
4041 /* PowerPC 440 TLB management */
4042 void helper_440_tlbwe (uint32_t word, target_ulong entry, target_ulong value)
4043 {
4044 ppcemb_tlb_t *tlb;
4045 target_ulong EPN, RPN, size;
4046 int do_flush_tlbs;
4047
4048 LOG_SWTLB("%s word %d entry %d value " TARGET_FMT_lx "\n",
4049 __func__, word, (int)entry, value);
4050 do_flush_tlbs = 0;
4051 entry &= 0x3F;
4052 tlb = &env->tlb[entry].tlbe;
4053 switch (word) {
4054 default:
4055 /* Just here to please gcc */
4056 case 0:
4057 EPN = value & 0xFFFFFC00;
4058 if ((tlb->prot & PAGE_VALID) && EPN != tlb->EPN)
4059 do_flush_tlbs = 1;
4060 tlb->EPN = EPN;
4061 size = booke_tlb_to_page_size((value >> 4) & 0xF);
4062 if ((tlb->prot & PAGE_VALID) && tlb->size < size)
4063 do_flush_tlbs = 1;
4064 tlb->size = size;
4065 tlb->attr &= ~0x1;
4066 tlb->attr |= (value >> 8) & 1;
4067 if (value & 0x200) {
4068 tlb->prot |= PAGE_VALID;
4069 } else {
4070 if (tlb->prot & PAGE_VALID) {
4071 tlb->prot &= ~PAGE_VALID;
4072 do_flush_tlbs = 1;
4073 }
4074 }
4075 tlb->PID = env->spr[SPR_440_MMUCR] & 0x000000FF;
4076 if (do_flush_tlbs)
4077 tlb_flush(env, 1);
4078 break;
4079 case 1:
4080 RPN = value & 0xFFFFFC0F;
4081 if ((tlb->prot & PAGE_VALID) && tlb->RPN != RPN)
4082 tlb_flush(env, 1);
4083 tlb->RPN = RPN;
4084 break;
4085 case 2:
4086 tlb->attr = (tlb->attr & 0x1) | (value & 0x0000FF00);
4087 tlb->prot = tlb->prot & PAGE_VALID;
4088 if (value & 0x1)
4089 tlb->prot |= PAGE_READ << 4;
4090 if (value & 0x2)
4091 tlb->prot |= PAGE_WRITE << 4;
4092 if (value & 0x4)
4093 tlb->prot |= PAGE_EXEC << 4;
4094 if (value & 0x8)
4095 tlb->prot |= PAGE_READ;
4096 if (value & 0x10)
4097 tlb->prot |= PAGE_WRITE;
4098 if (value & 0x20)
4099 tlb->prot |= PAGE_EXEC;
4100 break;
4101 }
4102 }
4103
4104 target_ulong helper_440_tlbre (uint32_t word, target_ulong entry)
4105 {
4106 ppcemb_tlb_t *tlb;
4107 target_ulong ret;
4108 int size;
4109
4110 entry &= 0x3F;
4111 tlb = &env->tlb[entry].tlbe;
4112 switch (word) {
4113 default:
4114 /* Just here to please gcc */
4115 case 0:
4116 ret = tlb->EPN;
4117 size = booke_page_size_to_tlb(tlb->size);
4118 if (size < 0 || size > 0xF)
4119 size = 1;
4120 ret |= size << 4;
4121 if (tlb->attr & 0x1)
4122 ret |= 0x100;
4123 if (tlb->prot & PAGE_VALID)
4124 ret |= 0x200;
4125 env->spr[SPR_440_MMUCR] &= ~0x000000FF;
4126 env->spr[SPR_440_MMUCR] |= tlb->PID;
4127 break;
4128 case 1:
4129 ret = tlb->RPN;
4130 break;
4131 case 2:
4132 ret = tlb->attr & ~0x1;
4133 if (tlb->prot & (PAGE_READ << 4))
4134 ret |= 0x1;
4135 if (tlb->prot & (PAGE_WRITE << 4))
4136 ret |= 0x2;
4137 if (tlb->prot & (PAGE_EXEC << 4))
4138 ret |= 0x4;
4139 if (tlb->prot & PAGE_READ)
4140 ret |= 0x8;
4141 if (tlb->prot & PAGE_WRITE)
4142 ret |= 0x10;
4143 if (tlb->prot & PAGE_EXEC)
4144 ret |= 0x20;
4145 break;
4146 }
4147 return ret;
4148 }
4149
4150 target_ulong helper_440_tlbsx (target_ulong address)
4151 {
4152 return ppcemb_tlb_search(env, address, env->spr[SPR_440_MMUCR] & 0xFF);
4153 }
4154
4155 #endif /* !CONFIG_USER_ONLY */
AR7 emulation for QEMU