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linux-user: ARM: Ignore immediate value for svc in thumb mode
[qemu/agraf.git] / target-alpha / translate.c
blob12de6a3fb65cdb8fb8cb88cc74c6a40b1b320da1
1 /*
2 * Alpha emulation cpu translation for qemu.
3 *
4 * Copyright (c) 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
20 #include "cpu.h"
21 #include "disas.h"
22 #include "host-utils.h"
23 #include "tcg-op.h"
24
25 #include "helper.h"
26 #define GEN_HELPER 1
27 #include "helper.h"
28
29 #undef ALPHA_DEBUG_DISAS
30 #define CONFIG_SOFTFLOAT_INLINE
31
32 #ifdef ALPHA_DEBUG_DISAS
33 # define LOG_DISAS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
34 #else
35 # define LOG_DISAS(...) do { } while (0)
36 #endif
37
38 typedef struct DisasContext DisasContext;
39 struct DisasContext {
40 struct TranslationBlock *tb;
41 CPUAlphaState *env;
42 uint64_t pc;
43 int mem_idx;
44
45 /* Current rounding mode for this TB. */
46 int tb_rm;
47 /* Current flush-to-zero setting for this TB. */
48 int tb_ftz;
49 };
50
51 /* Return values from translate_one, indicating the state of the TB.
52 Note that zero indicates that we are not exiting the TB. */
53
54 typedef enum {
55 NO_EXIT,
56
57 /* We have emitted one or more goto_tb. No fixup required. */
58 EXIT_GOTO_TB,
59
60 /* We are not using a goto_tb (for whatever reason), but have updated
61 the PC (for whatever reason), so there's no need to do it again on
62 exiting the TB. */
63 EXIT_PC_UPDATED,
64
65 /* We are exiting the TB, but have neither emitted a goto_tb, nor
66 updated the PC for the next instruction to be executed. */
67 EXIT_PC_STALE,
68
69 /* We are ending the TB with a noreturn function call, e.g. longjmp.
70 No following code will be executed. */
71 EXIT_NORETURN,
72 } ExitStatus;
73
74 /* global register indexes */
75 static TCGv_ptr cpu_env;
76 static TCGv cpu_ir[31];
77 static TCGv cpu_fir[31];
78 static TCGv cpu_pc;
79 static TCGv cpu_lock_addr;
80 static TCGv cpu_lock_st_addr;
81 static TCGv cpu_lock_value;
82 static TCGv cpu_unique;
83 #ifndef CONFIG_USER_ONLY
84 static TCGv cpu_sysval;
85 static TCGv cpu_usp;
86 #endif
87
88 /* register names */
89 static char cpu_reg_names[10*4+21*5 + 10*5+21*6];
90
91 #include "gen-icount.h"
92
93 static void alpha_translate_init(void)
94 {
95 int i;
96 char *p;
97 static int done_init = 0;
98
99 if (done_init)
100 return;
101
102 cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
103
104 p = cpu_reg_names;
105 for (i = 0; i < 31; i++) {
106 sprintf(p, "ir%d", i);
107 cpu_ir[i] = tcg_global_mem_new_i64(TCG_AREG0,
108 offsetof(CPUAlphaState, ir[i]), p);
109 p += (i < 10) ? 4 : 5;
110
111 sprintf(p, "fir%d", i);
112 cpu_fir[i] = tcg_global_mem_new_i64(TCG_AREG0,
113 offsetof(CPUAlphaState, fir[i]), p);
114 p += (i < 10) ? 5 : 6;
115 }
116
117 cpu_pc = tcg_global_mem_new_i64(TCG_AREG0,
118 offsetof(CPUAlphaState, pc), "pc");
119
120 cpu_lock_addr = tcg_global_mem_new_i64(TCG_AREG0,
121 offsetof(CPUAlphaState, lock_addr),
122 "lock_addr");
123 cpu_lock_st_addr = tcg_global_mem_new_i64(TCG_AREG0,
124 offsetof(CPUAlphaState, lock_st_addr),
125 "lock_st_addr");
126 cpu_lock_value = tcg_global_mem_new_i64(TCG_AREG0,
127 offsetof(CPUAlphaState, lock_value),
128 "lock_value");
129
130 cpu_unique = tcg_global_mem_new_i64(TCG_AREG0,
131 offsetof(CPUAlphaState, unique), "unique");
132 #ifndef CONFIG_USER_ONLY
133 cpu_sysval = tcg_global_mem_new_i64(TCG_AREG0,
134 offsetof(CPUAlphaState, sysval), "sysval");
135 cpu_usp = tcg_global_mem_new_i64(TCG_AREG0,
136 offsetof(CPUAlphaState, usp), "usp");
137 #endif
138
139 /* register helpers */
140 #define GEN_HELPER 2
141 #include "helper.h"
142
143 done_init = 1;
144 }
145
146 static void gen_excp_1(int exception, int error_code)
147 {
148 TCGv_i32 tmp1, tmp2;
149
150 tmp1 = tcg_const_i32(exception);
151 tmp2 = tcg_const_i32(error_code);
152 gen_helper_excp(cpu_env, tmp1, tmp2);
153 tcg_temp_free_i32(tmp2);
154 tcg_temp_free_i32(tmp1);
155 }
156
157 static ExitStatus gen_excp(DisasContext *ctx, int exception, int error_code)
158 {
159 tcg_gen_movi_i64(cpu_pc, ctx->pc);
160 gen_excp_1(exception, error_code);
161 return EXIT_NORETURN;
162 }
163
164 static inline ExitStatus gen_invalid(DisasContext *ctx)
165 {
166 return gen_excp(ctx, EXCP_OPCDEC, 0);
167 }
168
169 static inline void gen_qemu_ldf(TCGv t0, TCGv t1, int flags)
170 {
171 TCGv tmp = tcg_temp_new();
172 TCGv_i32 tmp32 = tcg_temp_new_i32();
173 tcg_gen_qemu_ld32u(tmp, t1, flags);
174 tcg_gen_trunc_i64_i32(tmp32, tmp);
175 gen_helper_memory_to_f(t0, tmp32);
176 tcg_temp_free_i32(tmp32);
177 tcg_temp_free(tmp);
178 }
179
180 static inline void gen_qemu_ldg(TCGv t0, TCGv t1, int flags)
181 {
182 TCGv tmp = tcg_temp_new();
183 tcg_gen_qemu_ld64(tmp, t1, flags);
184 gen_helper_memory_to_g(t0, tmp);
185 tcg_temp_free(tmp);
186 }
187
188 static inline void gen_qemu_lds(TCGv t0, TCGv t1, int flags)
189 {
190 TCGv tmp = tcg_temp_new();
191 TCGv_i32 tmp32 = tcg_temp_new_i32();
192 tcg_gen_qemu_ld32u(tmp, t1, flags);
193 tcg_gen_trunc_i64_i32(tmp32, tmp);
194 gen_helper_memory_to_s(t0, tmp32);
195 tcg_temp_free_i32(tmp32);
196 tcg_temp_free(tmp);
197 }
198
199 static inline void gen_qemu_ldl_l(TCGv t0, TCGv t1, int flags)
200 {
201 tcg_gen_qemu_ld32s(t0, t1, flags);
202 tcg_gen_mov_i64(cpu_lock_addr, t1);
203 tcg_gen_mov_i64(cpu_lock_value, t0);
204 }
205
206 static inline void gen_qemu_ldq_l(TCGv t0, TCGv t1, int flags)
207 {
208 tcg_gen_qemu_ld64(t0, t1, flags);
209 tcg_gen_mov_i64(cpu_lock_addr, t1);
210 tcg_gen_mov_i64(cpu_lock_value, t0);
211 }
212
213 static inline void gen_load_mem(DisasContext *ctx,
214 void (*tcg_gen_qemu_load)(TCGv t0, TCGv t1,
215 int flags),
216 int ra, int rb, int32_t disp16, int fp,
217 int clear)
218 {
219 TCGv addr, va;
220
221 /* LDQ_U with ra $31 is UNOP. Other various loads are forms of
222 prefetches, which we can treat as nops. No worries about
223 missed exceptions here. */
224 if (unlikely(ra == 31)) {
225 return;
226 }
227
228 addr = tcg_temp_new();
229 if (rb != 31) {
230 tcg_gen_addi_i64(addr, cpu_ir[rb], disp16);
231 if (clear) {
232 tcg_gen_andi_i64(addr, addr, ~0x7);
233 }
234 } else {
235 if (clear) {
236 disp16 &= ~0x7;
237 }
238 tcg_gen_movi_i64(addr, disp16);
239 }
240
241 va = (fp ? cpu_fir[ra] : cpu_ir[ra]);
242 tcg_gen_qemu_load(va, addr, ctx->mem_idx);
243
244 tcg_temp_free(addr);
245 }
246
247 static inline void gen_qemu_stf(TCGv t0, TCGv t1, int flags)
248 {
249 TCGv_i32 tmp32 = tcg_temp_new_i32();
250 TCGv tmp = tcg_temp_new();
251 gen_helper_f_to_memory(tmp32, t0);
252 tcg_gen_extu_i32_i64(tmp, tmp32);
253 tcg_gen_qemu_st32(tmp, t1, flags);
254 tcg_temp_free(tmp);
255 tcg_temp_free_i32(tmp32);
256 }
257
258 static inline void gen_qemu_stg(TCGv t0, TCGv t1, int flags)
259 {
260 TCGv tmp = tcg_temp_new();
261 gen_helper_g_to_memory(tmp, t0);
262 tcg_gen_qemu_st64(tmp, t1, flags);
263 tcg_temp_free(tmp);
264 }
265
266 static inline void gen_qemu_sts(TCGv t0, TCGv t1, int flags)
267 {
268 TCGv_i32 tmp32 = tcg_temp_new_i32();
269 TCGv tmp = tcg_temp_new();
270 gen_helper_s_to_memory(tmp32, t0);
271 tcg_gen_extu_i32_i64(tmp, tmp32);
272 tcg_gen_qemu_st32(tmp, t1, flags);
273 tcg_temp_free(tmp);
274 tcg_temp_free_i32(tmp32);
275 }
276
277 static inline void gen_store_mem(DisasContext *ctx,
278 void (*tcg_gen_qemu_store)(TCGv t0, TCGv t1,
279 int flags),
280 int ra, int rb, int32_t disp16, int fp,
281 int clear)
282 {
283 TCGv addr, va;
284
285 addr = tcg_temp_new();
286 if (rb != 31) {
287 tcg_gen_addi_i64(addr, cpu_ir[rb], disp16);
288 if (clear) {
289 tcg_gen_andi_i64(addr, addr, ~0x7);
290 }
291 } else {
292 if (clear) {
293 disp16 &= ~0x7;
294 }
295 tcg_gen_movi_i64(addr, disp16);
296 }
297
298 if (ra == 31) {
299 va = tcg_const_i64(0);
300 } else {
301 va = (fp ? cpu_fir[ra] : cpu_ir[ra]);
302 }
303 tcg_gen_qemu_store(va, addr, ctx->mem_idx);
304
305 tcg_temp_free(addr);
306 if (ra == 31) {
307 tcg_temp_free(va);
308 }
309 }
310
311 static ExitStatus gen_store_conditional(DisasContext *ctx, int ra, int rb,
312 int32_t disp16, int quad)
313 {
314 TCGv addr;
315
316 if (ra == 31) {
317 /* ??? Don't bother storing anything. The user can't tell
318 the difference, since the zero register always reads zero. */
319 return NO_EXIT;
320 }
321
322 #if defined(CONFIG_USER_ONLY)
323 addr = cpu_lock_st_addr;
324 #else
325 addr = tcg_temp_local_new();
326 #endif
327
328 if (rb != 31) {
329 tcg_gen_addi_i64(addr, cpu_ir[rb], disp16);
330 } else {
331 tcg_gen_movi_i64(addr, disp16);
332 }
333
334 #if defined(CONFIG_USER_ONLY)
335 /* ??? This is handled via a complicated version of compare-and-swap
336 in the cpu_loop. Hopefully one day we'll have a real CAS opcode
337 in TCG so that this isn't necessary. */
338 return gen_excp(ctx, quad ? EXCP_STQ_C : EXCP_STL_C, ra);
339 #else
340 /* ??? In system mode we are never multi-threaded, so CAS can be
341 implemented via a non-atomic load-compare-store sequence. */
342 {
343 int lab_fail, lab_done;
344 TCGv val;
345
346 lab_fail = gen_new_label();
347 lab_done = gen_new_label();
348 tcg_gen_brcond_i64(TCG_COND_NE, addr, cpu_lock_addr, lab_fail);
349
350 val = tcg_temp_new();
351 if (quad) {
352 tcg_gen_qemu_ld64(val, addr, ctx->mem_idx);
353 } else {
354 tcg_gen_qemu_ld32s(val, addr, ctx->mem_idx);
355 }
356 tcg_gen_brcond_i64(TCG_COND_NE, val, cpu_lock_value, lab_fail);
357
358 if (quad) {
359 tcg_gen_qemu_st64(cpu_ir[ra], addr, ctx->mem_idx);
360 } else {
361 tcg_gen_qemu_st32(cpu_ir[ra], addr, ctx->mem_idx);
362 }
363 tcg_gen_movi_i64(cpu_ir[ra], 1);
364 tcg_gen_br(lab_done);
365
366 gen_set_label(lab_fail);
367 tcg_gen_movi_i64(cpu_ir[ra], 0);
368
369 gen_set_label(lab_done);
370 tcg_gen_movi_i64(cpu_lock_addr, -1);
371
372 tcg_temp_free(addr);
373 return NO_EXIT;
374 }
375 #endif
376 }
377
378 static int use_goto_tb(DisasContext *ctx, uint64_t dest)
379 {
380 /* Check for the dest on the same page as the start of the TB. We
381 also want to suppress goto_tb in the case of single-steping and IO. */
382 return (((ctx->tb->pc ^ dest) & TARGET_PAGE_MASK) == 0
383 && !ctx->env->singlestep_enabled
384 && !(ctx->tb->cflags & CF_LAST_IO));
385 }
386
387 static ExitStatus gen_bdirect(DisasContext *ctx, int ra, int32_t disp)
388 {
389 uint64_t dest = ctx->pc + (disp << 2);
390
391 if (ra != 31) {
392 tcg_gen_movi_i64(cpu_ir[ra], ctx->pc);
393 }
394
395 /* Notice branch-to-next; used to initialize RA with the PC. */
396 if (disp == 0) {
397 return 0;
398 } else if (use_goto_tb(ctx, dest)) {
399 tcg_gen_goto_tb(0);
400 tcg_gen_movi_i64(cpu_pc, dest);
401 tcg_gen_exit_tb((tcg_target_long)ctx->tb);
402 return EXIT_GOTO_TB;
403 } else {
404 tcg_gen_movi_i64(cpu_pc, dest);
405 return EXIT_PC_UPDATED;
406 }
407 }
408
409 static ExitStatus gen_bcond_internal(DisasContext *ctx, TCGCond cond,
410 TCGv cmp, int32_t disp)
411 {
412 uint64_t dest = ctx->pc + (disp << 2);
413 int lab_true = gen_new_label();
414
415 if (use_goto_tb(ctx, dest)) {
416 tcg_gen_brcondi_i64(cond, cmp, 0, lab_true);
417
418 tcg_gen_goto_tb(0);
419 tcg_gen_movi_i64(cpu_pc, ctx->pc);
420 tcg_gen_exit_tb((tcg_target_long)ctx->tb);
421
422 gen_set_label(lab_true);
423 tcg_gen_goto_tb(1);
424 tcg_gen_movi_i64(cpu_pc, dest);
425 tcg_gen_exit_tb((tcg_target_long)ctx->tb + 1);
426
427 return EXIT_GOTO_TB;
428 } else {
429 int lab_over = gen_new_label();
430
431 /* ??? Consider using either
432 movi pc, next
433 addi tmp, pc, disp
434 movcond pc, cond, 0, tmp, pc
435 or
436 setcond tmp, cond, 0
437 movi pc, next
438 neg tmp, tmp
439 andi tmp, tmp, disp
440 add pc, pc, tmp
441 The current diamond subgraph surely isn't efficient. */
442
443 tcg_gen_brcondi_i64(cond, cmp, 0, lab_true);
444 tcg_gen_movi_i64(cpu_pc, ctx->pc);
445 tcg_gen_br(lab_over);
446 gen_set_label(lab_true);
447 tcg_gen_movi_i64(cpu_pc, dest);
448 gen_set_label(lab_over);
449
450 return EXIT_PC_UPDATED;
451 }
452 }
453
454 static ExitStatus gen_bcond(DisasContext *ctx, TCGCond cond, int ra,
455 int32_t disp, int mask)
456 {
457 TCGv cmp_tmp;
458
459 if (unlikely(ra == 31)) {
460 cmp_tmp = tcg_const_i64(0);
461 } else {
462 cmp_tmp = tcg_temp_new();
463 if (mask) {
464 tcg_gen_andi_i64(cmp_tmp, cpu_ir[ra], 1);
465 } else {
466 tcg_gen_mov_i64(cmp_tmp, cpu_ir[ra]);
467 }
468 }
469
470 return gen_bcond_internal(ctx, cond, cmp_tmp, disp);
471 }
472
473 /* Fold -0.0 for comparison with COND. */
474
475 static void gen_fold_mzero(TCGCond cond, TCGv dest, TCGv src)
476 {
477 uint64_t mzero = 1ull << 63;
478
479 switch (cond) {
480 case TCG_COND_LE:
481 case TCG_COND_GT:
482 /* For <= or >, the -0.0 value directly compares the way we want. */
483 tcg_gen_mov_i64(dest, src);
484 break;
485
486 case TCG_COND_EQ:
487 case TCG_COND_NE:
488 /* For == or !=, we can simply mask off the sign bit and compare. */
489 tcg_gen_andi_i64(dest, src, mzero - 1);
490 break;
491
492 case TCG_COND_GE:
493 case TCG_COND_LT:
494 /* For >= or <, map -0.0 to +0.0 via comparison and mask. */
495 tcg_gen_setcondi_i64(TCG_COND_NE, dest, src, mzero);
496 tcg_gen_neg_i64(dest, dest);
497 tcg_gen_and_i64(dest, dest, src);
498 break;
499
500 default:
501 abort();
502 }
503 }
504
505 static ExitStatus gen_fbcond(DisasContext *ctx, TCGCond cond, int ra,
506 int32_t disp)
507 {
508 TCGv cmp_tmp;
509
510 if (unlikely(ra == 31)) {
511 /* Very uncommon case, but easier to optimize it to an integer
512 comparison than continuing with the floating point comparison. */
513 return gen_bcond(ctx, cond, ra, disp, 0);
514 }
515
516 cmp_tmp = tcg_temp_new();
517 gen_fold_mzero(cond, cmp_tmp, cpu_fir[ra]);
518 return gen_bcond_internal(ctx, cond, cmp_tmp, disp);
519 }
520
521 static void gen_cmov(TCGCond cond, int ra, int rb, int rc,
522 int islit, uint8_t lit, int mask)
523 {
524 TCGCond inv_cond = tcg_invert_cond(cond);
525 int l1;
526
527 if (unlikely(rc == 31))
528 return;
529
530 l1 = gen_new_label();
531
532 if (ra != 31) {
533 if (mask) {
534 TCGv tmp = tcg_temp_new();
535 tcg_gen_andi_i64(tmp, cpu_ir[ra], 1);
536 tcg_gen_brcondi_i64(inv_cond, tmp, 0, l1);
537 tcg_temp_free(tmp);
538 } else
539 tcg_gen_brcondi_i64(inv_cond, cpu_ir[ra], 0, l1);
540 } else {
541 /* Very uncommon case - Do not bother to optimize. */
542 TCGv tmp = tcg_const_i64(0);
543 tcg_gen_brcondi_i64(inv_cond, tmp, 0, l1);
544 tcg_temp_free(tmp);
545 }
546
547 if (islit)
548 tcg_gen_movi_i64(cpu_ir[rc], lit);
549 else
550 tcg_gen_mov_i64(cpu_ir[rc], cpu_ir[rb]);
551 gen_set_label(l1);
552 }
553
554 static void gen_fcmov(TCGCond cond, int ra, int rb, int rc)
555 {
556 TCGv cmp_tmp;
557 int l1;
558
559 if (unlikely(rc == 31)) {
560 return;
561 }
562
563 cmp_tmp = tcg_temp_new();
564 if (unlikely(ra == 31)) {
565 tcg_gen_movi_i64(cmp_tmp, 0);
566 } else {
567 gen_fold_mzero(cond, cmp_tmp, cpu_fir[ra]);
568 }
569
570 l1 = gen_new_label();
571 tcg_gen_brcondi_i64(tcg_invert_cond(cond), cmp_tmp, 0, l1);
572 tcg_temp_free(cmp_tmp);
573
574 if (rb != 31)
575 tcg_gen_mov_i64(cpu_fir[rc], cpu_fir[rb]);
576 else
577 tcg_gen_movi_i64(cpu_fir[rc], 0);
578 gen_set_label(l1);
579 }
580
581 #define QUAL_RM_N 0x080 /* Round mode nearest even */
582 #define QUAL_RM_C 0x000 /* Round mode chopped */
583 #define QUAL_RM_M 0x040 /* Round mode minus infinity */
584 #define QUAL_RM_D 0x0c0 /* Round mode dynamic */
585 #define QUAL_RM_MASK 0x0c0
586
587 #define QUAL_U 0x100 /* Underflow enable (fp output) */
588 #define QUAL_V 0x100 /* Overflow enable (int output) */
589 #define QUAL_S 0x400 /* Software completion enable */
590 #define QUAL_I 0x200 /* Inexact detection enable */
591
592 static void gen_qual_roundmode(DisasContext *ctx, int fn11)
593 {
594 TCGv_i32 tmp;
595
596 fn11 &= QUAL_RM_MASK;
597 if (fn11 == ctx->tb_rm) {
598 return;
599 }
600 ctx->tb_rm = fn11;
601
602 tmp = tcg_temp_new_i32();
603 switch (fn11) {
604 case QUAL_RM_N:
605 tcg_gen_movi_i32(tmp, float_round_nearest_even);
606 break;
607 case QUAL_RM_C:
608 tcg_gen_movi_i32(tmp, float_round_to_zero);
609 break;
610 case QUAL_RM_M:
611 tcg_gen_movi_i32(tmp, float_round_down);
612 break;
613 case QUAL_RM_D:
614 tcg_gen_ld8u_i32(tmp, cpu_env,
615 offsetof(CPUAlphaState, fpcr_dyn_round));
616 break;
617 }
618
619 #if defined(CONFIG_SOFTFLOAT_INLINE)
620 /* ??? The "softfloat.h" interface is to call set_float_rounding_mode.
621 With CONFIG_SOFTFLOAT that expands to an out-of-line call that just
622 sets the one field. */
623 tcg_gen_st8_i32(tmp, cpu_env,
624 offsetof(CPUAlphaState, fp_status.float_rounding_mode));
625 #else
626 gen_helper_setroundmode(tmp);
627 #endif
628
629 tcg_temp_free_i32(tmp);
630 }
631
632 static void gen_qual_flushzero(DisasContext *ctx, int fn11)
633 {
634 TCGv_i32 tmp;
635
636 fn11 &= QUAL_U;
637 if (fn11 == ctx->tb_ftz) {
638 return;
639 }
640 ctx->tb_ftz = fn11;
641
642 tmp = tcg_temp_new_i32();
643 if (fn11) {
644 /* Underflow is enabled, use the FPCR setting. */
645 tcg_gen_ld8u_i32(tmp, cpu_env,
646 offsetof(CPUAlphaState, fpcr_flush_to_zero));
647 } else {
648 /* Underflow is disabled, force flush-to-zero. */
649 tcg_gen_movi_i32(tmp, 1);
650 }
651
652 #if defined(CONFIG_SOFTFLOAT_INLINE)
653 tcg_gen_st8_i32(tmp, cpu_env,
654 offsetof(CPUAlphaState, fp_status.flush_to_zero));
655 #else
656 gen_helper_setflushzero(tmp);
657 #endif
658
659 tcg_temp_free_i32(tmp);
660 }
661
662 static TCGv gen_ieee_input(int reg, int fn11, int is_cmp)
663 {
664 TCGv val;
665 if (reg == 31) {
666 val = tcg_const_i64(0);
667 } else {
668 if ((fn11 & QUAL_S) == 0) {
669 if (is_cmp) {
670 gen_helper_ieee_input_cmp(cpu_env, cpu_fir[reg]);
671 } else {
672 gen_helper_ieee_input(cpu_env, cpu_fir[reg]);
673 }
674 }
675 val = tcg_temp_new();
676 tcg_gen_mov_i64(val, cpu_fir[reg]);
677 }
678 return val;
679 }
680
681 static void gen_fp_exc_clear(void)
682 {
683 #if defined(CONFIG_SOFTFLOAT_INLINE)
684 TCGv_i32 zero = tcg_const_i32(0);
685 tcg_gen_st8_i32(zero, cpu_env,
686 offsetof(CPUAlphaState, fp_status.float_exception_flags));
687 tcg_temp_free_i32(zero);
688 #else
689 gen_helper_fp_exc_clear(cpu_env);
690 #endif
691 }
692
693 static void gen_fp_exc_raise_ignore(int rc, int fn11, int ignore)
694 {
695 /* ??? We ought to be able to do something with imprecise exceptions.
696 E.g. notice we're still in the trap shadow of something within the
697 TB and do not generate the code to signal the exception; end the TB
698 when an exception is forced to arrive, either by consumption of a
699 register value or TRAPB or EXCB. */
700 TCGv_i32 exc = tcg_temp_new_i32();
701 TCGv_i32 reg;
702
703 #if defined(CONFIG_SOFTFLOAT_INLINE)
704 tcg_gen_ld8u_i32(exc, cpu_env,
705 offsetof(CPUAlphaState, fp_status.float_exception_flags));
706 #else
707 gen_helper_fp_exc_get(exc, cpu_env);
708 #endif
709
710 if (ignore) {
711 tcg_gen_andi_i32(exc, exc, ~ignore);
712 }
713
714 /* ??? Pass in the regno of the destination so that the helper can
715 set EXC_MASK, which contains a bitmask of destination registers
716 that have caused arithmetic traps. A simple userspace emulation
717 does not require this. We do need it for a guest kernel's entArith,
718 or if we were to do something clever with imprecise exceptions. */
719 reg = tcg_const_i32(rc + 32);
720
721 if (fn11 & QUAL_S) {
722 gen_helper_fp_exc_raise_s(cpu_env, exc, reg);
723 } else {
724 gen_helper_fp_exc_raise(cpu_env, exc, reg);
725 }
726
727 tcg_temp_free_i32(reg);
728 tcg_temp_free_i32(exc);
729 }
730
731 static inline void gen_fp_exc_raise(int rc, int fn11)
732 {
733 gen_fp_exc_raise_ignore(rc, fn11, fn11 & QUAL_I ? 0 : float_flag_inexact);
734 }
735
736 static void gen_fcvtlq(int rb, int rc)
737 {
738 if (unlikely(rc == 31)) {
739 return;
740 }
741 if (unlikely(rb == 31)) {
742 tcg_gen_movi_i64(cpu_fir[rc], 0);
743 } else {
744 TCGv tmp = tcg_temp_new();
745
746 /* The arithmetic right shift here, plus the sign-extended mask below
747 yields a sign-extended result without an explicit ext32s_i64. */
748 tcg_gen_sari_i64(tmp, cpu_fir[rb], 32);
749 tcg_gen_shri_i64(cpu_fir[rc], cpu_fir[rb], 29);
750 tcg_gen_andi_i64(tmp, tmp, (int32_t)0xc0000000);
751 tcg_gen_andi_i64(cpu_fir[rc], cpu_fir[rc], 0x3fffffff);
752 tcg_gen_or_i64(cpu_fir[rc], cpu_fir[rc], tmp);
753
754 tcg_temp_free(tmp);
755 }
756 }
757
758 static void gen_fcvtql(int rb, int rc)
759 {
760 if (unlikely(rc == 31)) {
761 return;
762 }
763 if (unlikely(rb == 31)) {
764 tcg_gen_movi_i64(cpu_fir[rc], 0);
765 } else {
766 TCGv tmp = tcg_temp_new();
767
768 tcg_gen_andi_i64(tmp, cpu_fir[rb], 0xC0000000);
769 tcg_gen_andi_i64(cpu_fir[rc], cpu_fir[rb], 0x3FFFFFFF);
770 tcg_gen_shli_i64(tmp, tmp, 32);
771 tcg_gen_shli_i64(cpu_fir[rc], cpu_fir[rc], 29);
772 tcg_gen_or_i64(cpu_fir[rc], cpu_fir[rc], tmp);
773
774 tcg_temp_free(tmp);
775 }
776 }
777
778 static void gen_fcvtql_v(DisasContext *ctx, int rb, int rc)
779 {
780 if (rb != 31) {
781 int lab = gen_new_label();
782 TCGv tmp = tcg_temp_new();
783
784 tcg_gen_ext32s_i64(tmp, cpu_fir[rb]);
785 tcg_gen_brcond_i64(TCG_COND_EQ, tmp, cpu_fir[rb], lab);
786 gen_excp(ctx, EXCP_ARITH, EXC_M_IOV);
787
788 gen_set_label(lab);
789 }
790 gen_fcvtql(rb, rc);
791 }
792
793 #define FARITH2(name) \
794 static inline void glue(gen_f, name)(int rb, int rc) \
795 { \
796 if (unlikely(rc == 31)) { \
797 return; \
798 } \
799 if (rb != 31) { \
800 gen_helper_ ## name(cpu_fir[rc], cpu_env, cpu_fir[rb]); \
801 } else { \
802 TCGv tmp = tcg_const_i64(0); \
803 gen_helper_ ## name(cpu_fir[rc], cpu_env, tmp); \
804 tcg_temp_free(tmp); \
805 } \
806 }
807
808 /* ??? VAX instruction qualifiers ignored. */
809 FARITH2(sqrtf)
810 FARITH2(sqrtg)
811 FARITH2(cvtgf)
812 FARITH2(cvtgq)
813 FARITH2(cvtqf)
814 FARITH2(cvtqg)
815
816 static void gen_ieee_arith2(DisasContext *ctx,
817 void (*helper)(TCGv, TCGv_ptr, TCGv),
818 int rb, int rc, int fn11)
819 {
820 TCGv vb;
821
822 /* ??? This is wrong: the instruction is not a nop, it still may
823 raise exceptions. */
824 if (unlikely(rc == 31)) {
825 return;
826 }
827
828 gen_qual_roundmode(ctx, fn11);
829 gen_qual_flushzero(ctx, fn11);
830 gen_fp_exc_clear();
831
832 vb = gen_ieee_input(rb, fn11, 0);
833 helper(cpu_fir[rc], cpu_env, vb);
834 tcg_temp_free(vb);
835
836 gen_fp_exc_raise(rc, fn11);
837 }
838
839 #define IEEE_ARITH2(name) \
840 static inline void glue(gen_f, name)(DisasContext *ctx, \
841 int rb, int rc, int fn11) \
842 { \
843 gen_ieee_arith2(ctx, gen_helper_##name, rb, rc, fn11); \
844 }
845 IEEE_ARITH2(sqrts)
846 IEEE_ARITH2(sqrtt)
847 IEEE_ARITH2(cvtst)
848 IEEE_ARITH2(cvtts)
849
850 static void gen_fcvttq(DisasContext *ctx, int rb, int rc, int fn11)
851 {
852 TCGv vb;
853 int ignore = 0;
854
855 /* ??? This is wrong: the instruction is not a nop, it still may
856 raise exceptions. */
857 if (unlikely(rc == 31)) {
858 return;
859 }
860
861 /* No need to set flushzero, since we have an integer output. */
862 gen_fp_exc_clear();
863 vb = gen_ieee_input(rb, fn11, 0);
864
865 /* Almost all integer conversions use cropped rounding, and most
866 also do not have integer overflow enabled. Special case that. */
867 switch (fn11) {
868 case QUAL_RM_C:
869 gen_helper_cvttq_c(cpu_fir[rc], cpu_env, vb);
870 break;
871 case QUAL_V | QUAL_RM_C:
872 case QUAL_S | QUAL_V | QUAL_RM_C:
873 ignore = float_flag_inexact;
874 /* FALLTHRU */
875 case QUAL_S | QUAL_V | QUAL_I | QUAL_RM_C:
876 gen_helper_cvttq_svic(cpu_fir[rc], cpu_env, vb);
877 break;
878 default:
879 gen_qual_roundmode(ctx, fn11);
880 gen_helper_cvttq(cpu_fir[rc], cpu_env, vb);
881 ignore |= (fn11 & QUAL_V ? 0 : float_flag_overflow);
882 ignore |= (fn11 & QUAL_I ? 0 : float_flag_inexact);
883 break;
884 }
885 tcg_temp_free(vb);
886
887 gen_fp_exc_raise_ignore(rc, fn11, ignore);
888 }
889
890 static void gen_ieee_intcvt(DisasContext *ctx,
891 void (*helper)(TCGv, TCGv_ptr, TCGv),
892 int rb, int rc, int fn11)
893 {
894 TCGv vb;
895
896 /* ??? This is wrong: the instruction is not a nop, it still may
897 raise exceptions. */
898 if (unlikely(rc == 31)) {
899 return;
900 }
901
902 gen_qual_roundmode(ctx, fn11);
903
904 if (rb == 31) {
905 vb = tcg_const_i64(0);
906 } else {
907 vb = cpu_fir[rb];
908 }
909
910 /* The only exception that can be raised by integer conversion
911 is inexact. Thus we only need to worry about exceptions when
912 inexact handling is requested. */
913 if (fn11 & QUAL_I) {
914 gen_fp_exc_clear();
915 helper(cpu_fir[rc], cpu_env, vb);
916 gen_fp_exc_raise(rc, fn11);
917 } else {
918 helper(cpu_fir[rc], cpu_env, vb);
919 }
920
921 if (rb == 31) {
922 tcg_temp_free(vb);
923 }
924 }
925
926 #define IEEE_INTCVT(name) \
927 static inline void glue(gen_f, name)(DisasContext *ctx, \
928 int rb, int rc, int fn11) \
929 { \
930 gen_ieee_intcvt(ctx, gen_helper_##name, rb, rc, fn11); \
931 }
932 IEEE_INTCVT(cvtqs)
933 IEEE_INTCVT(cvtqt)
934
935 static void gen_cpys_internal(int ra, int rb, int rc, int inv_a, uint64_t mask)
936 {
937 TCGv va, vb, vmask;
938 int za = 0, zb = 0;
939
940 if (unlikely(rc == 31)) {
941 return;
942 }
943
944 vmask = tcg_const_i64(mask);
945
946 TCGV_UNUSED_I64(va);
947 if (ra == 31) {
948 if (inv_a) {
949 va = vmask;
950 } else {
951 za = 1;
952 }
953 } else {
954 va = tcg_temp_new_i64();
955 tcg_gen_mov_i64(va, cpu_fir[ra]);
956 if (inv_a) {
957 tcg_gen_andc_i64(va, vmask, va);
958 } else {
959 tcg_gen_and_i64(va, va, vmask);
960 }
961 }
962
963 TCGV_UNUSED_I64(vb);
964 if (rb == 31) {
965 zb = 1;
966 } else {
967 vb = tcg_temp_new_i64();
968 tcg_gen_andc_i64(vb, cpu_fir[rb], vmask);
969 }
970
971 switch (za << 1 | zb) {
972 case 0 | 0:
973 tcg_gen_or_i64(cpu_fir[rc], va, vb);
974 break;
975 case 0 | 1:
976 tcg_gen_mov_i64(cpu_fir[rc], va);
977 break;
978 case 2 | 0:
979 tcg_gen_mov_i64(cpu_fir[rc], vb);
980 break;
981 case 2 | 1:
982 tcg_gen_movi_i64(cpu_fir[rc], 0);
983 break;
984 }
985
986 tcg_temp_free(vmask);
987 if (ra != 31) {
988 tcg_temp_free(va);
989 }
990 if (rb != 31) {
991 tcg_temp_free(vb);
992 }
993 }
994
995 static inline void gen_fcpys(int ra, int rb, int rc)
996 {
997 gen_cpys_internal(ra, rb, rc, 0, 0x8000000000000000ULL);
998 }
999
1000 static inline void gen_fcpysn(int ra, int rb, int rc)
1001 {
1002 gen_cpys_internal(ra, rb, rc, 1, 0x8000000000000000ULL);
1003 }
1004
1005 static inline void gen_fcpyse(int ra, int rb, int rc)
1006 {
1007 gen_cpys_internal(ra, rb, rc, 0, 0xFFF0000000000000ULL);
1008 }
1009
1010 #define FARITH3(name) \
1011 static inline void glue(gen_f, name)(int ra, int rb, int rc) \
1012 { \
1013 TCGv va, vb; \
1014 \
1015 if (unlikely(rc == 31)) { \
1016 return; \
1017 } \
1018 if (ra == 31) { \
1019 va = tcg_const_i64(0); \
1020 } else { \
1021 va = cpu_fir[ra]; \
1022 } \
1023 if (rb == 31) { \
1024 vb = tcg_const_i64(0); \
1025 } else { \
1026 vb = cpu_fir[rb]; \
1027 } \
1028 \
1029 gen_helper_ ## name(cpu_fir[rc], cpu_env, va, vb); \
1030 \
1031 if (ra == 31) { \
1032 tcg_temp_free(va); \
1033 } \
1034 if (rb == 31) { \
1035 tcg_temp_free(vb); \
1036 } \
1037 }
1038
1039 /* ??? VAX instruction qualifiers ignored. */
1040 FARITH3(addf)
1041 FARITH3(subf)
1042 FARITH3(mulf)
1043 FARITH3(divf)
1044 FARITH3(addg)
1045 FARITH3(subg)
1046 FARITH3(mulg)
1047 FARITH3(divg)
1048 FARITH3(cmpgeq)
1049 FARITH3(cmpglt)
1050 FARITH3(cmpgle)
1051
1052 static void gen_ieee_arith3(DisasContext *ctx,
1053 void (*helper)(TCGv, TCGv_ptr, TCGv, TCGv),
1054 int ra, int rb, int rc, int fn11)
1055 {
1056 TCGv va, vb;
1057
1058 /* ??? This is wrong: the instruction is not a nop, it still may
1059 raise exceptions. */
1060 if (unlikely(rc == 31)) {
1061 return;
1062 }
1063
1064 gen_qual_roundmode(ctx, fn11);
1065 gen_qual_flushzero(ctx, fn11);
1066 gen_fp_exc_clear();
1067
1068 va = gen_ieee_input(ra, fn11, 0);
1069 vb = gen_ieee_input(rb, fn11, 0);
1070 helper(cpu_fir[rc], cpu_env, va, vb);
1071 tcg_temp_free(va);
1072 tcg_temp_free(vb);
1073
1074 gen_fp_exc_raise(rc, fn11);
1075 }
1076
1077 #define IEEE_ARITH3(name) \
1078 static inline void glue(gen_f, name)(DisasContext *ctx, \
1079 int ra, int rb, int rc, int fn11) \
1080 { \
1081 gen_ieee_arith3(ctx, gen_helper_##name, ra, rb, rc, fn11); \
1082 }
1083 IEEE_ARITH3(adds)
1084 IEEE_ARITH3(subs)
1085 IEEE_ARITH3(muls)
1086 IEEE_ARITH3(divs)
1087 IEEE_ARITH3(addt)
1088 IEEE_ARITH3(subt)
1089 IEEE_ARITH3(mult)
1090 IEEE_ARITH3(divt)
1091
1092 static void gen_ieee_compare(DisasContext *ctx,
1093 void (*helper)(TCGv, TCGv_ptr, TCGv, TCGv),
1094 int ra, int rb, int rc, int fn11)
1095 {
1096 TCGv va, vb;
1097
1098 /* ??? This is wrong: the instruction is not a nop, it still may
1099 raise exceptions. */
1100 if (unlikely(rc == 31)) {
1101 return;
1102 }
1103
1104 gen_fp_exc_clear();
1105
1106 va = gen_ieee_input(ra, fn11, 1);
1107 vb = gen_ieee_input(rb, fn11, 1);
1108 helper(cpu_fir[rc], cpu_env, va, vb);
1109 tcg_temp_free(va);
1110 tcg_temp_free(vb);
1111
1112 gen_fp_exc_raise(rc, fn11);
1113 }
1114
1115 #define IEEE_CMP3(name) \
1116 static inline void glue(gen_f, name)(DisasContext *ctx, \
1117 int ra, int rb, int rc, int fn11) \
1118 { \
1119 gen_ieee_compare(ctx, gen_helper_##name, ra, rb, rc, fn11); \
1120 }
1121 IEEE_CMP3(cmptun)
1122 IEEE_CMP3(cmpteq)
1123 IEEE_CMP3(cmptlt)
1124 IEEE_CMP3(cmptle)
1125
1126 static inline uint64_t zapnot_mask(uint8_t lit)
1127 {
1128 uint64_t mask = 0;
1129 int i;
1130
1131 for (i = 0; i < 8; ++i) {
1132 if ((lit >> i) & 1)
1133 mask |= 0xffull << (i * 8);
1134 }
1135 return mask;
1136 }
1137
1138 /* Implement zapnot with an immediate operand, which expands to some
1139 form of immediate AND. This is a basic building block in the
1140 definition of many of the other byte manipulation instructions. */
1141 static void gen_zapnoti(TCGv dest, TCGv src, uint8_t lit)
1142 {
1143 switch (lit) {
1144 case 0x00:
1145 tcg_gen_movi_i64(dest, 0);
1146 break;
1147 case 0x01:
1148 tcg_gen_ext8u_i64(dest, src);
1149 break;
1150 case 0x03:
1151 tcg_gen_ext16u_i64(dest, src);
1152 break;
1153 case 0x0f:
1154 tcg_gen_ext32u_i64(dest, src);
1155 break;
1156 case 0xff:
1157 tcg_gen_mov_i64(dest, src);
1158 break;
1159 default:
1160 tcg_gen_andi_i64 (dest, src, zapnot_mask (lit));
1161 break;
1162 }
1163 }
1164
1165 static inline void gen_zapnot(int ra, int rb, int rc, int islit, uint8_t lit)
1166 {
1167 if (unlikely(rc == 31))
1168 return;
1169 else if (unlikely(ra == 31))
1170 tcg_gen_movi_i64(cpu_ir[rc], 0);
1171 else if (islit)
1172 gen_zapnoti(cpu_ir[rc], cpu_ir[ra], lit);
1173 else
1174 gen_helper_zapnot (cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
1175 }
1176
1177 static inline void gen_zap(int ra, int rb, int rc, int islit, uint8_t lit)
1178 {
1179 if (unlikely(rc == 31))
1180 return;
1181 else if (unlikely(ra == 31))
1182 tcg_gen_movi_i64(cpu_ir[rc], 0);
1183 else if (islit)
1184 gen_zapnoti(cpu_ir[rc], cpu_ir[ra], ~lit);
1185 else
1186 gen_helper_zap (cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
1187 }
1188
1189
1190 /* EXTWH, EXTLH, EXTQH */
1191 static void gen_ext_h(int ra, int rb, int rc, int islit,
1192 uint8_t lit, uint8_t byte_mask)
1193 {
1194 if (unlikely(rc == 31))
1195 return;
1196 else if (unlikely(ra == 31))
1197 tcg_gen_movi_i64(cpu_ir[rc], 0);
1198 else {
1199 if (islit) {
1200 lit = (64 - (lit & 7) * 8) & 0x3f;
1201 tcg_gen_shli_i64(cpu_ir[rc], cpu_ir[ra], lit);
1202 } else {
1203 TCGv tmp1 = tcg_temp_new();
1204 tcg_gen_andi_i64(tmp1, cpu_ir[rb], 7);
1205 tcg_gen_shli_i64(tmp1, tmp1, 3);
1206 tcg_gen_neg_i64(tmp1, tmp1);
1207 tcg_gen_andi_i64(tmp1, tmp1, 0x3f);
1208 tcg_gen_shl_i64(cpu_ir[rc], cpu_ir[ra], tmp1);
1209 tcg_temp_free(tmp1);
1210 }
1211 gen_zapnoti(cpu_ir[rc], cpu_ir[rc], byte_mask);
1212 }
1213 }
1214
1215 /* EXTBL, EXTWL, EXTLL, EXTQL */
1216 static void gen_ext_l(int ra, int rb, int rc, int islit,
1217 uint8_t lit, uint8_t byte_mask)
1218 {
1219 if (unlikely(rc == 31))
1220 return;
1221 else if (unlikely(ra == 31))
1222 tcg_gen_movi_i64(cpu_ir[rc], 0);
1223 else {
1224 if (islit) {
1225 tcg_gen_shri_i64(cpu_ir[rc], cpu_ir[ra], (lit & 7) * 8);
1226 } else {
1227 TCGv tmp = tcg_temp_new();
1228 tcg_gen_andi_i64(tmp, cpu_ir[rb], 7);
1229 tcg_gen_shli_i64(tmp, tmp, 3);
1230 tcg_gen_shr_i64(cpu_ir[rc], cpu_ir[ra], tmp);
1231 tcg_temp_free(tmp);
1232 }
1233 gen_zapnoti(cpu_ir[rc], cpu_ir[rc], byte_mask);
1234 }
1235 }
1236
1237 /* INSWH, INSLH, INSQH */
1238 static void gen_ins_h(int ra, int rb, int rc, int islit,
1239 uint8_t lit, uint8_t byte_mask)
1240 {
1241 if (unlikely(rc == 31))
1242 return;
1243 else if (unlikely(ra == 31) || (islit && (lit & 7) == 0))
1244 tcg_gen_movi_i64(cpu_ir[rc], 0);
1245 else {
1246 TCGv tmp = tcg_temp_new();
1247
1248 /* The instruction description has us left-shift the byte mask
1249 and extract bits <15:8> and apply that zap at the end. This
1250 is equivalent to simply performing the zap first and shifting
1251 afterward. */
1252 gen_zapnoti (tmp, cpu_ir[ra], byte_mask);
1253
1254 if (islit) {
1255 /* Note that we have handled the lit==0 case above. */
1256 tcg_gen_shri_i64 (cpu_ir[rc], tmp, 64 - (lit & 7) * 8);
1257 } else {
1258 TCGv shift = tcg_temp_new();
1259
1260 /* If (B & 7) == 0, we need to shift by 64 and leave a zero.
1261 Do this portably by splitting the shift into two parts:
1262 shift_count-1 and 1. Arrange for the -1 by using
1263 ones-complement instead of twos-complement in the negation:
1264 ~((B & 7) * 8) & 63. */
1265
1266 tcg_gen_andi_i64(shift, cpu_ir[rb], 7);
1267 tcg_gen_shli_i64(shift, shift, 3);
1268 tcg_gen_not_i64(shift, shift);
1269 tcg_gen_andi_i64(shift, shift, 0x3f);
1270
1271 tcg_gen_shr_i64(cpu_ir[rc], tmp, shift);
1272 tcg_gen_shri_i64(cpu_ir[rc], cpu_ir[rc], 1);
1273 tcg_temp_free(shift);
1274 }
1275 tcg_temp_free(tmp);
1276 }
1277 }
1278
1279 /* INSBL, INSWL, INSLL, INSQL */
1280 static void gen_ins_l(int ra, int rb, int rc, int islit,
1281 uint8_t lit, uint8_t byte_mask)
1282 {
1283 if (unlikely(rc == 31))
1284 return;
1285 else if (unlikely(ra == 31))
1286 tcg_gen_movi_i64(cpu_ir[rc], 0);
1287 else {
1288 TCGv tmp = tcg_temp_new();
1289
1290 /* The instruction description has us left-shift the byte mask
1291 the same number of byte slots as the data and apply the zap
1292 at the end. This is equivalent to simply performing the zap
1293 first and shifting afterward. */
1294 gen_zapnoti (tmp, cpu_ir[ra], byte_mask);
1295
1296 if (islit) {
1297 tcg_gen_shli_i64(cpu_ir[rc], tmp, (lit & 7) * 8);
1298 } else {
1299 TCGv shift = tcg_temp_new();
1300 tcg_gen_andi_i64(shift, cpu_ir[rb], 7);
1301 tcg_gen_shli_i64(shift, shift, 3);
1302 tcg_gen_shl_i64(cpu_ir[rc], tmp, shift);
1303 tcg_temp_free(shift);
1304 }
1305 tcg_temp_free(tmp);
1306 }
1307 }
1308
1309 /* MSKWH, MSKLH, MSKQH */
1310 static void gen_msk_h(int ra, int rb, int rc, int islit,
1311 uint8_t lit, uint8_t byte_mask)
1312 {
1313 if (unlikely(rc == 31))
1314 return;
1315 else if (unlikely(ra == 31))
1316 tcg_gen_movi_i64(cpu_ir[rc], 0);
1317 else if (islit) {
1318 gen_zapnoti (cpu_ir[rc], cpu_ir[ra], ~((byte_mask << (lit & 7)) >> 8));
1319 } else {
1320 TCGv shift = tcg_temp_new();
1321 TCGv mask = tcg_temp_new();
1322
1323 /* The instruction description is as above, where the byte_mask
1324 is shifted left, and then we extract bits <15:8>. This can be
1325 emulated with a right-shift on the expanded byte mask. This
1326 requires extra care because for an input <2:0> == 0 we need a
1327 shift of 64 bits in order to generate a zero. This is done by
1328 splitting the shift into two parts, the variable shift - 1
1329 followed by a constant 1 shift. The code we expand below is
1330 equivalent to ~((B & 7) * 8) & 63. */
1331
1332 tcg_gen_andi_i64(shift, cpu_ir[rb], 7);
1333 tcg_gen_shli_i64(shift, shift, 3);
1334 tcg_gen_not_i64(shift, shift);
1335 tcg_gen_andi_i64(shift, shift, 0x3f);
1336 tcg_gen_movi_i64(mask, zapnot_mask (byte_mask));
1337 tcg_gen_shr_i64(mask, mask, shift);
1338 tcg_gen_shri_i64(mask, mask, 1);
1339
1340 tcg_gen_andc_i64(cpu_ir[rc], cpu_ir[ra], mask);
1341
1342 tcg_temp_free(mask);
1343 tcg_temp_free(shift);
1344 }
1345 }
1346
1347 /* MSKBL, MSKWL, MSKLL, MSKQL */
1348 static void gen_msk_l(int ra, int rb, int rc, int islit,
1349 uint8_t lit, uint8_t byte_mask)
1350 {
1351 if (unlikely(rc == 31))
1352 return;
1353 else if (unlikely(ra == 31))
1354 tcg_gen_movi_i64(cpu_ir[rc], 0);
1355 else if (islit) {
1356 gen_zapnoti (cpu_ir[rc], cpu_ir[ra], ~(byte_mask << (lit & 7)));
1357 } else {
1358 TCGv shift = tcg_temp_new();
1359 TCGv mask = tcg_temp_new();
1360
1361 tcg_gen_andi_i64(shift, cpu_ir[rb], 7);
1362 tcg_gen_shli_i64(shift, shift, 3);
1363 tcg_gen_movi_i64(mask, zapnot_mask (byte_mask));
1364 tcg_gen_shl_i64(mask, mask, shift);
1365
1366 tcg_gen_andc_i64(cpu_ir[rc], cpu_ir[ra], mask);
1367
1368 tcg_temp_free(mask);
1369 tcg_temp_free(shift);
1370 }
1371 }
1372
1373 /* Code to call arith3 helpers */
1374 #define ARITH3(name) \
1375 static inline void glue(gen_, name)(int ra, int rb, int rc, int islit,\
1376 uint8_t lit) \
1377 { \
1378 if (unlikely(rc == 31)) \
1379 return; \
1380 \
1381 if (ra != 31) { \
1382 if (islit) { \
1383 TCGv tmp = tcg_const_i64(lit); \
1384 gen_helper_ ## name(cpu_ir[rc], cpu_ir[ra], tmp); \
1385 tcg_temp_free(tmp); \
1386 } else \
1387 gen_helper_ ## name (cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]); \
1388 } else { \
1389 TCGv tmp1 = tcg_const_i64(0); \
1390 if (islit) { \
1391 TCGv tmp2 = tcg_const_i64(lit); \
1392 gen_helper_ ## name (cpu_ir[rc], tmp1, tmp2); \
1393 tcg_temp_free(tmp2); \
1394 } else \
1395 gen_helper_ ## name (cpu_ir[rc], tmp1, cpu_ir[rb]); \
1396 tcg_temp_free(tmp1); \
1397 } \
1398 }
1399 ARITH3(umulh)
1400 ARITH3(cmpbge)
1401 ARITH3(minub8)
1402 ARITH3(minsb8)
1403 ARITH3(minuw4)
1404 ARITH3(minsw4)
1405 ARITH3(maxub8)
1406 ARITH3(maxsb8)
1407 ARITH3(maxuw4)
1408 ARITH3(maxsw4)
1409 ARITH3(perr)
1410
1411 /* Code to call arith3 helpers */
1412 #define ARITH3_EX(name) \
1413 static inline void glue(gen_, name)(int ra, int rb, int rc, \
1414 int islit, uint8_t lit) \
1415 { \
1416 if (unlikely(rc == 31)) { \
1417 return; \
1418 } \
1419 if (ra != 31) { \
1420 if (islit) { \
1421 TCGv tmp = tcg_const_i64(lit); \
1422 gen_helper_ ## name(cpu_ir[rc], cpu_env, \
1423 cpu_ir[ra], tmp); \
1424 tcg_temp_free(tmp); \
1425 } else { \
1426 gen_helper_ ## name(cpu_ir[rc], cpu_env, \
1427 cpu_ir[ra], cpu_ir[rb]); \
1428 } \
1429 } else { \
1430 TCGv tmp1 = tcg_const_i64(0); \
1431 if (islit) { \
1432 TCGv tmp2 = tcg_const_i64(lit); \
1433 gen_helper_ ## name(cpu_ir[rc], cpu_env, tmp1, tmp2); \
1434 tcg_temp_free(tmp2); \
1435 } else { \
1436 gen_helper_ ## name(cpu_ir[rc], cpu_env, tmp1, cpu_ir[rb]); \
1437 } \
1438 tcg_temp_free(tmp1); \
1439 } \
1440 }
1441 ARITH3_EX(addlv)
1442 ARITH3_EX(sublv)
1443 ARITH3_EX(addqv)
1444 ARITH3_EX(subqv)
1445 ARITH3_EX(mullv)
1446 ARITH3_EX(mulqv)
1447
1448 #define MVIOP2(name) \
1449 static inline void glue(gen_, name)(int rb, int rc) \
1450 { \
1451 if (unlikely(rc == 31)) \
1452 return; \
1453 if (unlikely(rb == 31)) \
1454 tcg_gen_movi_i64(cpu_ir[rc], 0); \
1455 else \
1456 gen_helper_ ## name (cpu_ir[rc], cpu_ir[rb]); \
1457 }
1458 MVIOP2(pklb)
1459 MVIOP2(pkwb)
1460 MVIOP2(unpkbl)
1461 MVIOP2(unpkbw)
1462
1463 static void gen_cmp(TCGCond cond, int ra, int rb, int rc,
1464 int islit, uint8_t lit)
1465 {
1466 TCGv va, vb;
1467
1468 if (unlikely(rc == 31)) {
1469 return;
1470 }
1471
1472 if (ra == 31) {
1473 va = tcg_const_i64(0);
1474 } else {
1475 va = cpu_ir[ra];
1476 }
1477 if (islit) {
1478 vb = tcg_const_i64(lit);
1479 } else {
1480 vb = cpu_ir[rb];
1481 }
1482
1483 tcg_gen_setcond_i64(cond, cpu_ir[rc], va, vb);
1484
1485 if (ra == 31) {
1486 tcg_temp_free(va);
1487 }
1488 if (islit) {
1489 tcg_temp_free(vb);
1490 }
1491 }
1492
1493 static void gen_rx(int ra, int set)
1494 {
1495 TCGv_i32 tmp;
1496
1497 if (ra != 31) {
1498 tcg_gen_ld8u_i64(cpu_ir[ra], cpu_env, offsetof(CPUAlphaState, intr_flag));
1499 }
1500
1501 tmp = tcg_const_i32(set);
1502 tcg_gen_st8_i32(tmp, cpu_env, offsetof(CPUAlphaState, intr_flag));
1503 tcg_temp_free_i32(tmp);
1504 }
1505
1506 static ExitStatus gen_call_pal(DisasContext *ctx, int palcode)
1507 {
1508 /* We're emulating OSF/1 PALcode. Many of these are trivial access
1509 to internal cpu registers. */
1510
1511 /* Unprivileged PAL call */
1512 if (palcode >= 0x80 && palcode < 0xC0) {
1513 switch (palcode) {
1514 case 0x86:
1515 /* IMB */
1516 /* No-op inside QEMU. */
1517 break;
1518 case 0x9E:
1519 /* RDUNIQUE */
1520 tcg_gen_mov_i64(cpu_ir[IR_V0], cpu_unique);
1521 break;
1522 case 0x9F:
1523 /* WRUNIQUE */
1524 tcg_gen_mov_i64(cpu_unique, cpu_ir[IR_A0]);
1525 break;
1526 default:
1527 return gen_excp(ctx, EXCP_CALL_PAL, palcode & 0xbf);
1528 }
1529 return NO_EXIT;
1530 }
1531
1532 #ifndef CONFIG_USER_ONLY
1533 /* Privileged PAL code */
1534 if (palcode < 0x40 && (ctx->tb->flags & TB_FLAGS_USER_MODE) == 0) {
1535 switch (palcode) {
1536 case 0x01:
1537 /* CFLUSH */
1538 /* No-op inside QEMU. */
1539 break;
1540 case 0x02:
1541 /* DRAINA */
1542 /* No-op inside QEMU. */
1543 break;
1544 case 0x2D:
1545 /* WRVPTPTR */
1546 tcg_gen_st_i64(cpu_ir[IR_A0], cpu_env, offsetof(CPUAlphaState, vptptr));
1547 break;
1548 case 0x31:
1549 /* WRVAL */
1550 tcg_gen_mov_i64(cpu_sysval, cpu_ir[IR_A0]);
1551 break;
1552 case 0x32:
1553 /* RDVAL */
1554 tcg_gen_mov_i64(cpu_ir[IR_V0], cpu_sysval);
1555 break;
1556
1557 case 0x35: {
1558 /* SWPIPL */
1559 TCGv tmp;
1560
1561 /* Note that we already know we're in kernel mode, so we know
1562 that PS only contains the 3 IPL bits. */
1563 tcg_gen_ld8u_i64(cpu_ir[IR_V0], cpu_env, offsetof(CPUAlphaState, ps));
1564
1565 /* But make sure and store only the 3 IPL bits from the user. */
1566 tmp = tcg_temp_new();
1567 tcg_gen_andi_i64(tmp, cpu_ir[IR_A0], PS_INT_MASK);
1568 tcg_gen_st8_i64(tmp, cpu_env, offsetof(CPUAlphaState, ps));
1569 tcg_temp_free(tmp);
1570 break;
1571 }
1572
1573 case 0x36:
1574 /* RDPS */
1575 tcg_gen_ld8u_i64(cpu_ir[IR_V0], cpu_env, offsetof(CPUAlphaState, ps));
1576 break;
1577 case 0x38:
1578 /* WRUSP */
1579 tcg_gen_mov_i64(cpu_usp, cpu_ir[IR_A0]);
1580 break;
1581 case 0x3A:
1582 /* RDUSP */
1583 tcg_gen_mov_i64(cpu_ir[IR_V0], cpu_usp);
1584 break;
1585 case 0x3C:
1586 /* WHAMI */
1587 tcg_gen_ld32s_i64(cpu_ir[IR_V0], cpu_env,
1588 offsetof(CPUAlphaState, cpu_index));
1589 break;
1590
1591 default:
1592 return gen_excp(ctx, EXCP_CALL_PAL, palcode & 0x3f);
1593 }
1594 return NO_EXIT;
1595 }
1596 #endif
1597
1598 return gen_invalid(ctx);
1599 }
1600
1601 #ifndef CONFIG_USER_ONLY
1602
1603 #define PR_BYTE 0x100000
1604 #define PR_LONG 0x200000
1605
1606 static int cpu_pr_data(int pr)
1607 {
1608 switch (pr) {
1609 case 0: return offsetof(CPUAlphaState, ps) | PR_BYTE;
1610 case 1: return offsetof(CPUAlphaState, fen) | PR_BYTE;
1611 case 2: return offsetof(CPUAlphaState, pcc_ofs) | PR_LONG;
1612 case 3: return offsetof(CPUAlphaState, trap_arg0);
1613 case 4: return offsetof(CPUAlphaState, trap_arg1);
1614 case 5: return offsetof(CPUAlphaState, trap_arg2);
1615 case 6: return offsetof(CPUAlphaState, exc_addr);
1616 case 7: return offsetof(CPUAlphaState, palbr);
1617 case 8: return offsetof(CPUAlphaState, ptbr);
1618 case 9: return offsetof(CPUAlphaState, vptptr);
1619 case 10: return offsetof(CPUAlphaState, unique);
1620 case 11: return offsetof(CPUAlphaState, sysval);
1621 case 12: return offsetof(CPUAlphaState, usp);
1622
1623 case 32 ... 39:
1624 return offsetof(CPUAlphaState, shadow[pr - 32]);
1625 case 40 ... 63:
1626 return offsetof(CPUAlphaState, scratch[pr - 40]);
1627
1628 case 251:
1629 return offsetof(CPUAlphaState, alarm_expire);
1630 }
1631 return 0;
1632 }
1633
1634 static ExitStatus gen_mfpr(int ra, int regno)
1635 {
1636 int data = cpu_pr_data(regno);
1637
1638 /* In our emulated PALcode, these processor registers have no
1639 side effects from reading. */
1640 if (ra == 31) {
1641 return NO_EXIT;
1642 }
1643
1644 if (regno == 250) {
1645 /* WALL_TIME */
1646 if (use_icount) {
1647 gen_io_start();
1648 gen_helper_get_time(cpu_ir[ra]);
1649 gen_io_end();
1650 return EXIT_PC_STALE;
1651 } else {
1652 gen_helper_get_time(cpu_ir[ra]);
1653 return NO_EXIT;
1654 }
1655 }
1656
1657 /* The basic registers are data only, and unknown registers
1658 are read-zero, write-ignore. */
1659 if (data == 0) {
1660 tcg_gen_movi_i64(cpu_ir[ra], 0);
1661 } else if (data & PR_BYTE) {
1662 tcg_gen_ld8u_i64(cpu_ir[ra], cpu_env, data & ~PR_BYTE);
1663 } else if (data & PR_LONG) {
1664 tcg_gen_ld32s_i64(cpu_ir[ra], cpu_env, data & ~PR_LONG);
1665 } else {
1666 tcg_gen_ld_i64(cpu_ir[ra], cpu_env, data);
1667 }
1668 return NO_EXIT;
1669 }
1670
1671 static ExitStatus gen_mtpr(DisasContext *ctx, int rb, int regno)
1672 {
1673 TCGv tmp;
1674 int data;
1675
1676 if (rb == 31) {
1677 tmp = tcg_const_i64(0);
1678 } else {
1679 tmp = cpu_ir[rb];
1680 }
1681
1682 switch (regno) {
1683 case 255:
1684 /* TBIA */
1685 gen_helper_tbia(cpu_env);
1686 break;
1687
1688 case 254:
1689 /* TBIS */
1690 gen_helper_tbis(cpu_env, tmp);
1691 break;
1692
1693 case 253:
1694 /* WAIT */
1695 tmp = tcg_const_i64(1);
1696 tcg_gen_st32_i64(tmp, cpu_env, offsetof(CPUAlphaState, halted));
1697 return gen_excp(ctx, EXCP_HLT, 0);
1698
1699 case 252:
1700 /* HALT */
1701 gen_helper_halt(tmp);
1702 return EXIT_PC_STALE;
1703
1704 case 251:
1705 /* ALARM */
1706 gen_helper_set_alarm(cpu_env, tmp);
1707 break;
1708
1709 default:
1710 /* The basic registers are data only, and unknown registers
1711 are read-zero, write-ignore. */
1712 data = cpu_pr_data(regno);
1713 if (data != 0) {
1714 if (data & PR_BYTE) {
1715 tcg_gen_st8_i64(tmp, cpu_env, data & ~PR_BYTE);
1716 } else if (data & PR_LONG) {
1717 tcg_gen_st32_i64(tmp, cpu_env, data & ~PR_LONG);
1718 } else {
1719 tcg_gen_st_i64(tmp, cpu_env, data);
1720 }
1721 }
1722 break;
1723 }
1724
1725 if (rb == 31) {
1726 tcg_temp_free(tmp);
1727 }
1728
1729 return NO_EXIT;
1730 }
1731 #endif /* !USER_ONLY*/
1732
1733 static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
1734 {
1735 uint32_t palcode;
1736 int32_t disp21, disp16;
1737 #ifndef CONFIG_USER_ONLY
1738 int32_t disp12;
1739 #endif
1740 uint16_t fn11;
1741 uint8_t opc, ra, rb, rc, fpfn, fn7, islit, real_islit;
1742 uint8_t lit;
1743 ExitStatus ret;
1744
1745 /* Decode all instruction fields */
1746 opc = insn >> 26;
1747 ra = (insn >> 21) & 0x1F;
1748 rb = (insn >> 16) & 0x1F;
1749 rc = insn & 0x1F;
1750 real_islit = islit = (insn >> 12) & 1;
1751 if (rb == 31 && !islit) {
1752 islit = 1;
1753 lit = 0;
1754 } else
1755 lit = (insn >> 13) & 0xFF;
1756 palcode = insn & 0x03FFFFFF;
1757 disp21 = ((int32_t)((insn & 0x001FFFFF) << 11)) >> 11;
1758 disp16 = (int16_t)(insn & 0x0000FFFF);
1759 #ifndef CONFIG_USER_ONLY
1760 disp12 = (int32_t)((insn & 0x00000FFF) << 20) >> 20;
1761 #endif
1762 fn11 = (insn >> 5) & 0x000007FF;
1763 fpfn = fn11 & 0x3F;
1764 fn7 = (insn >> 5) & 0x0000007F;
1765 LOG_DISAS("opc %02x ra %2d rb %2d rc %2d disp16 %6d\n",
1766 opc, ra, rb, rc, disp16);
1767
1768 ret = NO_EXIT;
1769 switch (opc) {
1770 case 0x00:
1771 /* CALL_PAL */
1772 ret = gen_call_pal(ctx, palcode);
1773 break;
1774 case 0x01:
1775 /* OPC01 */
1776 goto invalid_opc;
1777 case 0x02:
1778 /* OPC02 */
1779 goto invalid_opc;
1780 case 0x03:
1781 /* OPC03 */
1782 goto invalid_opc;
1783 case 0x04:
1784 /* OPC04 */
1785 goto invalid_opc;
1786 case 0x05:
1787 /* OPC05 */
1788 goto invalid_opc;
1789 case 0x06:
1790 /* OPC06 */
1791 goto invalid_opc;
1792 case 0x07:
1793 /* OPC07 */
1794 goto invalid_opc;
1795 case 0x08:
1796 /* LDA */
1797 if (likely(ra != 31)) {
1798 if (rb != 31)
1799 tcg_gen_addi_i64(cpu_ir[ra], cpu_ir[rb], disp16);
1800 else
1801 tcg_gen_movi_i64(cpu_ir[ra], disp16);
1802 }
1803 break;
1804 case 0x09:
1805 /* LDAH */
1806 if (likely(ra != 31)) {
1807 if (rb != 31)
1808 tcg_gen_addi_i64(cpu_ir[ra], cpu_ir[rb], disp16 << 16);
1809 else
1810 tcg_gen_movi_i64(cpu_ir[ra], disp16 << 16);
1811 }
1812 break;
1813 case 0x0A:
1814 /* LDBU */
1815 if (ctx->tb->flags & TB_FLAGS_AMASK_BWX) {
1816 gen_load_mem(ctx, &tcg_gen_qemu_ld8u, ra, rb, disp16, 0, 0);
1817 break;
1818 }
1819 goto invalid_opc;
1820 case 0x0B:
1821 /* LDQ_U */
1822 gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 0, 1);
1823 break;
1824 case 0x0C:
1825 /* LDWU */
1826 if (ctx->tb->flags & TB_FLAGS_AMASK_BWX) {
1827 gen_load_mem(ctx, &tcg_gen_qemu_ld16u, ra, rb, disp16, 0, 0);
1828 break;
1829 }
1830 goto invalid_opc;
1831 case 0x0D:
1832 /* STW */
1833 gen_store_mem(ctx, &tcg_gen_qemu_st16, ra, rb, disp16, 0, 0);
1834 break;
1835 case 0x0E:
1836 /* STB */
1837 gen_store_mem(ctx, &tcg_gen_qemu_st8, ra, rb, disp16, 0, 0);
1838 break;
1839 case 0x0F:
1840 /* STQ_U */
1841 gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 0, 1);
1842 break;
1843 case 0x10:
1844 switch (fn7) {
1845 case 0x00:
1846 /* ADDL */
1847 if (likely(rc != 31)) {
1848 if (ra != 31) {
1849 if (islit) {
1850 tcg_gen_addi_i64(cpu_ir[rc], cpu_ir[ra], lit);
1851 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rc]);
1852 } else {
1853 tcg_gen_add_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
1854 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rc]);
1855 }
1856 } else {
1857 if (islit)
1858 tcg_gen_movi_i64(cpu_ir[rc], lit);
1859 else
1860 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rb]);
1861 }
1862 }
1863 break;
1864 case 0x02:
1865 /* S4ADDL */
1866 if (likely(rc != 31)) {
1867 if (ra != 31) {
1868 TCGv tmp = tcg_temp_new();
1869 tcg_gen_shli_i64(tmp, cpu_ir[ra], 2);
1870 if (islit)
1871 tcg_gen_addi_i64(tmp, tmp, lit);
1872 else
1873 tcg_gen_add_i64(tmp, tmp, cpu_ir[rb]);
1874 tcg_gen_ext32s_i64(cpu_ir[rc], tmp);
1875 tcg_temp_free(tmp);
1876 } else {
1877 if (islit)
1878 tcg_gen_movi_i64(cpu_ir[rc], lit);
1879 else
1880 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rb]);
1881 }
1882 }
1883 break;
1884 case 0x09:
1885 /* SUBL */
1886 if (likely(rc != 31)) {
1887 if (ra != 31) {
1888 if (islit)
1889 tcg_gen_subi_i64(cpu_ir[rc], cpu_ir[ra], lit);
1890 else
1891 tcg_gen_sub_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
1892 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rc]);
1893 } else {
1894 if (islit)
1895 tcg_gen_movi_i64(cpu_ir[rc], -lit);
1896 else {
1897 tcg_gen_neg_i64(cpu_ir[rc], cpu_ir[rb]);
1898 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rc]);
1899 }
1900 }
1901 break;
1902 case 0x0B:
1903 /* S4SUBL */
1904 if (likely(rc != 31)) {
1905 if (ra != 31) {
1906 TCGv tmp = tcg_temp_new();
1907 tcg_gen_shli_i64(tmp, cpu_ir[ra], 2);
1908 if (islit)
1909 tcg_gen_subi_i64(tmp, tmp, lit);
1910 else
1911 tcg_gen_sub_i64(tmp, tmp, cpu_ir[rb]);
1912 tcg_gen_ext32s_i64(cpu_ir[rc], tmp);
1913 tcg_temp_free(tmp);
1914 } else {
1915 if (islit)
1916 tcg_gen_movi_i64(cpu_ir[rc], -lit);
1917 else {
1918 tcg_gen_neg_i64(cpu_ir[rc], cpu_ir[rb]);
1919 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rc]);
1920 }
1921 }
1922 }
1923 break;
1924 case 0x0F:
1925 /* CMPBGE */
1926 gen_cmpbge(ra, rb, rc, islit, lit);
1927 break;
1928 case 0x12:
1929 /* S8ADDL */
1930 if (likely(rc != 31)) {
1931 if (ra != 31) {
1932 TCGv tmp = tcg_temp_new();
1933 tcg_gen_shli_i64(tmp, cpu_ir[ra], 3);
1934 if (islit)
1935 tcg_gen_addi_i64(tmp, tmp, lit);
1936 else
1937 tcg_gen_add_i64(tmp, tmp, cpu_ir[rb]);
1938 tcg_gen_ext32s_i64(cpu_ir[rc], tmp);
1939 tcg_temp_free(tmp);
1940 } else {
1941 if (islit)
1942 tcg_gen_movi_i64(cpu_ir[rc], lit);
1943 else
1944 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rb]);
1945 }
1946 }
1947 break;
1948 case 0x1B:
1949 /* S8SUBL */
1950 if (likely(rc != 31)) {
1951 if (ra != 31) {
1952 TCGv tmp = tcg_temp_new();
1953 tcg_gen_shli_i64(tmp, cpu_ir[ra], 3);
1954 if (islit)
1955 tcg_gen_subi_i64(tmp, tmp, lit);
1956 else
1957 tcg_gen_sub_i64(tmp, tmp, cpu_ir[rb]);
1958 tcg_gen_ext32s_i64(cpu_ir[rc], tmp);
1959 tcg_temp_free(tmp);
1960 } else {
1961 if (islit)
1962 tcg_gen_movi_i64(cpu_ir[rc], -lit);
1963 else
1964 tcg_gen_neg_i64(cpu_ir[rc], cpu_ir[rb]);
1965 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rc]);
1966 }
1967 }
1968 }
1969 break;
1970 case 0x1D:
1971 /* CMPULT */
1972 gen_cmp(TCG_COND_LTU, ra, rb, rc, islit, lit);
1973 break;
1974 case 0x20:
1975 /* ADDQ */
1976 if (likely(rc != 31)) {
1977 if (ra != 31) {
1978 if (islit)
1979 tcg_gen_addi_i64(cpu_ir[rc], cpu_ir[ra], lit);
1980 else
1981 tcg_gen_add_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
1982 } else {
1983 if (islit)
1984 tcg_gen_movi_i64(cpu_ir[rc], lit);
1985 else
1986 tcg_gen_mov_i64(cpu_ir[rc], cpu_ir[rb]);
1987 }
1988 }
1989 break;
1990 case 0x22:
1991 /* S4ADDQ */
1992 if (likely(rc != 31)) {
1993 if (ra != 31) {
1994 TCGv tmp = tcg_temp_new();
1995 tcg_gen_shli_i64(tmp, cpu_ir[ra], 2);
1996 if (islit)
1997 tcg_gen_addi_i64(cpu_ir[rc], tmp, lit);
1998 else
1999 tcg_gen_add_i64(cpu_ir[rc], tmp, cpu_ir[rb]);
2000 tcg_temp_free(tmp);
2001 } else {
2002 if (islit)
2003 tcg_gen_movi_i64(cpu_ir[rc], lit);
2004 else
2005 tcg_gen_mov_i64(cpu_ir[rc], cpu_ir[rb]);
2006 }
2007 }
2008 break;
2009 case 0x29:
2010 /* SUBQ */
2011 if (likely(rc != 31)) {
2012 if (ra != 31) {
2013 if (islit)
2014 tcg_gen_subi_i64(cpu_ir[rc], cpu_ir[ra], lit);
2015 else
2016 tcg_gen_sub_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2017 } else {
2018 if (islit)
2019 tcg_gen_movi_i64(cpu_ir[rc], -lit);
2020 else
2021 tcg_gen_neg_i64(cpu_ir[rc], cpu_ir[rb]);
2022 }
2023 }
2024 break;
2025 case 0x2B:
2026 /* S4SUBQ */
2027 if (likely(rc != 31)) {
2028 if (ra != 31) {
2029 TCGv tmp = tcg_temp_new();
2030 tcg_gen_shli_i64(tmp, cpu_ir[ra], 2);
2031 if (islit)
2032 tcg_gen_subi_i64(cpu_ir[rc], tmp, lit);
2033 else
2034 tcg_gen_sub_i64(cpu_ir[rc], tmp, cpu_ir[rb]);
2035 tcg_temp_free(tmp);
2036 } else {
2037 if (islit)
2038 tcg_gen_movi_i64(cpu_ir[rc], -lit);
2039 else
2040 tcg_gen_neg_i64(cpu_ir[rc], cpu_ir[rb]);
2041 }
2042 }
2043 break;
2044 case 0x2D:
2045 /* CMPEQ */
2046 gen_cmp(TCG_COND_EQ, ra, rb, rc, islit, lit);
2047 break;
2048 case 0x32:
2049 /* S8ADDQ */
2050 if (likely(rc != 31)) {
2051 if (ra != 31) {
2052 TCGv tmp = tcg_temp_new();
2053 tcg_gen_shli_i64(tmp, cpu_ir[ra], 3);
2054 if (islit)
2055 tcg_gen_addi_i64(cpu_ir[rc], tmp, lit);
2056 else
2057 tcg_gen_add_i64(cpu_ir[rc], tmp, cpu_ir[rb]);
2058 tcg_temp_free(tmp);
2059 } else {
2060 if (islit)
2061 tcg_gen_movi_i64(cpu_ir[rc], lit);
2062 else
2063 tcg_gen_mov_i64(cpu_ir[rc], cpu_ir[rb]);
2064 }
2065 }
2066 break;
2067 case 0x3B:
2068 /* S8SUBQ */
2069 if (likely(rc != 31)) {
2070 if (ra != 31) {
2071 TCGv tmp = tcg_temp_new();
2072 tcg_gen_shli_i64(tmp, cpu_ir[ra], 3);
2073 if (islit)
2074 tcg_gen_subi_i64(cpu_ir[rc], tmp, lit);
2075 else
2076 tcg_gen_sub_i64(cpu_ir[rc], tmp, cpu_ir[rb]);
2077 tcg_temp_free(tmp);
2078 } else {
2079 if (islit)
2080 tcg_gen_movi_i64(cpu_ir[rc], -lit);
2081 else
2082 tcg_gen_neg_i64(cpu_ir[rc], cpu_ir[rb]);
2083 }
2084 }
2085 break;
2086 case 0x3D:
2087 /* CMPULE */
2088 gen_cmp(TCG_COND_LEU, ra, rb, rc, islit, lit);
2089 break;
2090 case 0x40:
2091 /* ADDL/V */
2092 gen_addlv(ra, rb, rc, islit, lit);
2093 break;
2094 case 0x49:
2095 /* SUBL/V */
2096 gen_sublv(ra, rb, rc, islit, lit);
2097 break;
2098 case 0x4D:
2099 /* CMPLT */
2100 gen_cmp(TCG_COND_LT, ra, rb, rc, islit, lit);
2101 break;
2102 case 0x60:
2103 /* ADDQ/V */
2104 gen_addqv(ra, rb, rc, islit, lit);
2105 break;
2106 case 0x69:
2107 /* SUBQ/V */
2108 gen_subqv(ra, rb, rc, islit, lit);
2109 break;
2110 case 0x6D:
2111 /* CMPLE */
2112 gen_cmp(TCG_COND_LE, ra, rb, rc, islit, lit);
2113 break;
2114 default:
2115 goto invalid_opc;
2116 }
2117 break;
2118 case 0x11:
2119 switch (fn7) {
2120 case 0x00:
2121 /* AND */
2122 if (likely(rc != 31)) {
2123 if (ra == 31)
2124 tcg_gen_movi_i64(cpu_ir[rc], 0);
2125 else if (islit)
2126 tcg_gen_andi_i64(cpu_ir[rc], cpu_ir[ra], lit);
2127 else
2128 tcg_gen_and_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2129 }
2130 break;
2131 case 0x08:
2132 /* BIC */
2133 if (likely(rc != 31)) {
2134 if (ra != 31) {
2135 if (islit)
2136 tcg_gen_andi_i64(cpu_ir[rc], cpu_ir[ra], ~lit);
2137 else
2138 tcg_gen_andc_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2139 } else
2140 tcg_gen_movi_i64(cpu_ir[rc], 0);
2141 }
2142 break;
2143 case 0x14:
2144 /* CMOVLBS */
2145 gen_cmov(TCG_COND_NE, ra, rb, rc, islit, lit, 1);
2146 break;
2147 case 0x16:
2148 /* CMOVLBC */
2149 gen_cmov(TCG_COND_EQ, ra, rb, rc, islit, lit, 1);
2150 break;
2151 case 0x20:
2152 /* BIS */
2153 if (likely(rc != 31)) {
2154 if (ra != 31) {
2155 if (islit)
2156 tcg_gen_ori_i64(cpu_ir[rc], cpu_ir[ra], lit);
2157 else
2158 tcg_gen_or_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2159 } else {
2160 if (islit)
2161 tcg_gen_movi_i64(cpu_ir[rc], lit);
2162 else
2163 tcg_gen_mov_i64(cpu_ir[rc], cpu_ir[rb]);
2164 }
2165 }
2166 break;
2167 case 0x24:
2168 /* CMOVEQ */
2169 gen_cmov(TCG_COND_EQ, ra, rb, rc, islit, lit, 0);
2170 break;
2171 case 0x26:
2172 /* CMOVNE */
2173 gen_cmov(TCG_COND_NE, ra, rb, rc, islit, lit, 0);
2174 break;
2175 case 0x28:
2176 /* ORNOT */
2177 if (likely(rc != 31)) {
2178 if (ra != 31) {
2179 if (islit)
2180 tcg_gen_ori_i64(cpu_ir[rc], cpu_ir[ra], ~lit);
2181 else
2182 tcg_gen_orc_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2183 } else {
2184 if (islit)
2185 tcg_gen_movi_i64(cpu_ir[rc], ~lit);
2186 else
2187 tcg_gen_not_i64(cpu_ir[rc], cpu_ir[rb]);
2188 }
2189 }
2190 break;
2191 case 0x40:
2192 /* XOR */
2193 if (likely(rc != 31)) {
2194 if (ra != 31) {
2195 if (islit)
2196 tcg_gen_xori_i64(cpu_ir[rc], cpu_ir[ra], lit);
2197 else
2198 tcg_gen_xor_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2199 } else {
2200 if (islit)
2201 tcg_gen_movi_i64(cpu_ir[rc], lit);
2202 else
2203 tcg_gen_mov_i64(cpu_ir[rc], cpu_ir[rb]);
2204 }
2205 }
2206 break;
2207 case 0x44:
2208 /* CMOVLT */
2209 gen_cmov(TCG_COND_LT, ra, rb, rc, islit, lit, 0);
2210 break;
2211 case 0x46:
2212 /* CMOVGE */
2213 gen_cmov(TCG_COND_GE, ra, rb, rc, islit, lit, 0);
2214 break;
2215 case 0x48:
2216 /* EQV */
2217 if (likely(rc != 31)) {
2218 if (ra != 31) {
2219 if (islit)
2220 tcg_gen_xori_i64(cpu_ir[rc], cpu_ir[ra], ~lit);
2221 else
2222 tcg_gen_eqv_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2223 } else {
2224 if (islit)
2225 tcg_gen_movi_i64(cpu_ir[rc], ~lit);
2226 else
2227 tcg_gen_not_i64(cpu_ir[rc], cpu_ir[rb]);
2228 }
2229 }
2230 break;
2231 case 0x61:
2232 /* AMASK */
2233 if (likely(rc != 31)) {
2234 uint64_t amask = ctx->tb->flags >> TB_FLAGS_AMASK_SHIFT;
2235
2236 if (islit) {
2237 tcg_gen_movi_i64(cpu_ir[rc], lit & ~amask);
2238 } else {
2239 tcg_gen_andi_i64(cpu_ir[rc], cpu_ir[rb], ~amask);
2240 }
2241 }
2242 break;
2243 case 0x64:
2244 /* CMOVLE */
2245 gen_cmov(TCG_COND_LE, ra, rb, rc, islit, lit, 0);
2246 break;
2247 case 0x66:
2248 /* CMOVGT */
2249 gen_cmov(TCG_COND_GT, ra, rb, rc, islit, lit, 0);
2250 break;
2251 case 0x6C:
2252 /* IMPLVER */
2253 if (rc != 31)
2254 tcg_gen_movi_i64(cpu_ir[rc], ctx->env->implver);
2255 break;
2256 default:
2257 goto invalid_opc;
2258 }
2259 break;
2260 case 0x12:
2261 switch (fn7) {
2262 case 0x02:
2263 /* MSKBL */
2264 gen_msk_l(ra, rb, rc, islit, lit, 0x01);
2265 break;
2266 case 0x06:
2267 /* EXTBL */
2268 gen_ext_l(ra, rb, rc, islit, lit, 0x01);
2269 break;
2270 case 0x0B:
2271 /* INSBL */
2272 gen_ins_l(ra, rb, rc, islit, lit, 0x01);
2273 break;
2274 case 0x12:
2275 /* MSKWL */
2276 gen_msk_l(ra, rb, rc, islit, lit, 0x03);
2277 break;
2278 case 0x16:
2279 /* EXTWL */
2280 gen_ext_l(ra, rb, rc, islit, lit, 0x03);
2281 break;
2282 case 0x1B:
2283 /* INSWL */
2284 gen_ins_l(ra, rb, rc, islit, lit, 0x03);
2285 break;
2286 case 0x22:
2287 /* MSKLL */
2288 gen_msk_l(ra, rb, rc, islit, lit, 0x0f);
2289 break;
2290 case 0x26:
2291 /* EXTLL */
2292 gen_ext_l(ra, rb, rc, islit, lit, 0x0f);
2293 break;
2294 case 0x2B:
2295 /* INSLL */
2296 gen_ins_l(ra, rb, rc, islit, lit, 0x0f);
2297 break;
2298 case 0x30:
2299 /* ZAP */
2300 gen_zap(ra, rb, rc, islit, lit);
2301 break;
2302 case 0x31:
2303 /* ZAPNOT */
2304 gen_zapnot(ra, rb, rc, islit, lit);
2305 break;
2306 case 0x32:
2307 /* MSKQL */
2308 gen_msk_l(ra, rb, rc, islit, lit, 0xff);
2309 break;
2310 case 0x34:
2311 /* SRL */
2312 if (likely(rc != 31)) {
2313 if (ra != 31) {
2314 if (islit)
2315 tcg_gen_shri_i64(cpu_ir[rc], cpu_ir[ra], lit & 0x3f);
2316 else {
2317 TCGv shift = tcg_temp_new();
2318 tcg_gen_andi_i64(shift, cpu_ir[rb], 0x3f);
2319 tcg_gen_shr_i64(cpu_ir[rc], cpu_ir[ra], shift);
2320 tcg_temp_free(shift);
2321 }
2322 } else
2323 tcg_gen_movi_i64(cpu_ir[rc], 0);
2324 }
2325 break;
2326 case 0x36:
2327 /* EXTQL */
2328 gen_ext_l(ra, rb, rc, islit, lit, 0xff);
2329 break;
2330 case 0x39:
2331 /* SLL */
2332 if (likely(rc != 31)) {
2333 if (ra != 31) {
2334 if (islit)
2335 tcg_gen_shli_i64(cpu_ir[rc], cpu_ir[ra], lit & 0x3f);
2336 else {
2337 TCGv shift = tcg_temp_new();
2338 tcg_gen_andi_i64(shift, cpu_ir[rb], 0x3f);
2339 tcg_gen_shl_i64(cpu_ir[rc], cpu_ir[ra], shift);
2340 tcg_temp_free(shift);
2341 }
2342 } else
2343 tcg_gen_movi_i64(cpu_ir[rc], 0);
2344 }
2345 break;
2346 case 0x3B:
2347 /* INSQL */
2348 gen_ins_l(ra, rb, rc, islit, lit, 0xff);
2349 break;
2350 case 0x3C:
2351 /* SRA */
2352 if (likely(rc != 31)) {
2353 if (ra != 31) {
2354 if (islit)
2355 tcg_gen_sari_i64(cpu_ir[rc], cpu_ir[ra], lit & 0x3f);
2356 else {
2357 TCGv shift = tcg_temp_new();
2358 tcg_gen_andi_i64(shift, cpu_ir[rb], 0x3f);
2359 tcg_gen_sar_i64(cpu_ir[rc], cpu_ir[ra], shift);
2360 tcg_temp_free(shift);
2361 }
2362 } else
2363 tcg_gen_movi_i64(cpu_ir[rc], 0);
2364 }
2365 break;
2366 case 0x52:
2367 /* MSKWH */
2368 gen_msk_h(ra, rb, rc, islit, lit, 0x03);
2369 break;
2370 case 0x57:
2371 /* INSWH */
2372 gen_ins_h(ra, rb, rc, islit, lit, 0x03);
2373 break;
2374 case 0x5A:
2375 /* EXTWH */
2376 gen_ext_h(ra, rb, rc, islit, lit, 0x03);
2377 break;
2378 case 0x62:
2379 /* MSKLH */
2380 gen_msk_h(ra, rb, rc, islit, lit, 0x0f);
2381 break;
2382 case 0x67:
2383 /* INSLH */
2384 gen_ins_h(ra, rb, rc, islit, lit, 0x0f);
2385 break;
2386 case 0x6A:
2387 /* EXTLH */
2388 gen_ext_h(ra, rb, rc, islit, lit, 0x0f);
2389 break;
2390 case 0x72:
2391 /* MSKQH */
2392 gen_msk_h(ra, rb, rc, islit, lit, 0xff);
2393 break;
2394 case 0x77:
2395 /* INSQH */
2396 gen_ins_h(ra, rb, rc, islit, lit, 0xff);
2397 break;
2398 case 0x7A:
2399 /* EXTQH */
2400 gen_ext_h(ra, rb, rc, islit, lit, 0xff);
2401 break;
2402 default:
2403 goto invalid_opc;
2404 }
2405 break;
2406 case 0x13:
2407 switch (fn7) {
2408 case 0x00:
2409 /* MULL */
2410 if (likely(rc != 31)) {
2411 if (ra == 31)
2412 tcg_gen_movi_i64(cpu_ir[rc], 0);
2413 else {
2414 if (islit)
2415 tcg_gen_muli_i64(cpu_ir[rc], cpu_ir[ra], lit);
2416 else
2417 tcg_gen_mul_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2418 tcg_gen_ext32s_i64(cpu_ir[rc], cpu_ir[rc]);
2419 }
2420 }
2421 break;
2422 case 0x20:
2423 /* MULQ */
2424 if (likely(rc != 31)) {
2425 if (ra == 31)
2426 tcg_gen_movi_i64(cpu_ir[rc], 0);
2427 else if (islit)
2428 tcg_gen_muli_i64(cpu_ir[rc], cpu_ir[ra], lit);
2429 else
2430 tcg_gen_mul_i64(cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
2431 }
2432 break;
2433 case 0x30:
2434 /* UMULH */
2435 gen_umulh(ra, rb, rc, islit, lit);
2436 break;
2437 case 0x40:
2438 /* MULL/V */
2439 gen_mullv(ra, rb, rc, islit, lit);
2440 break;
2441 case 0x60:
2442 /* MULQ/V */
2443 gen_mulqv(ra, rb, rc, islit, lit);
2444 break;
2445 default:
2446 goto invalid_opc;
2447 }
2448 break;
2449 case 0x14:
2450 switch (fpfn) { /* fn11 & 0x3F */
2451 case 0x04:
2452 /* ITOFS */
2453 if ((ctx->tb->flags & TB_FLAGS_AMASK_FIX) == 0) {
2454 goto invalid_opc;
2455 }
2456 if (likely(rc != 31)) {
2457 if (ra != 31) {
2458 TCGv_i32 tmp = tcg_temp_new_i32();
2459 tcg_gen_trunc_i64_i32(tmp, cpu_ir[ra]);
2460 gen_helper_memory_to_s(cpu_fir[rc], tmp);
2461 tcg_temp_free_i32(tmp);
2462 } else
2463 tcg_gen_movi_i64(cpu_fir[rc], 0);
2464 }
2465 break;
2466 case 0x0A:
2467 /* SQRTF */
2468 if (ctx->tb->flags & TB_FLAGS_AMASK_FIX) {
2469 gen_fsqrtf(rb, rc);
2470 break;
2471 }
2472 goto invalid_opc;
2473 case 0x0B:
2474 /* SQRTS */
2475 if (ctx->tb->flags & TB_FLAGS_AMASK_FIX) {
2476 gen_fsqrts(ctx, rb, rc, fn11);
2477 break;
2478 }
2479 goto invalid_opc;
2480 case 0x14:
2481 /* ITOFF */
2482 if ((ctx->tb->flags & TB_FLAGS_AMASK_FIX) == 0) {
2483 goto invalid_opc;
2484 }
2485 if (likely(rc != 31)) {
2486 if (ra != 31) {
2487 TCGv_i32 tmp = tcg_temp_new_i32();
2488 tcg_gen_trunc_i64_i32(tmp, cpu_ir[ra]);
2489 gen_helper_memory_to_f(cpu_fir[rc], tmp);
2490 tcg_temp_free_i32(tmp);
2491 } else
2492 tcg_gen_movi_i64(cpu_fir[rc], 0);
2493 }
2494 break;
2495 case 0x24:
2496 /* ITOFT */
2497 if ((ctx->tb->flags & TB_FLAGS_AMASK_FIX) == 0) {
2498 goto invalid_opc;
2499 }
2500 if (likely(rc != 31)) {
2501 if (ra != 31)
2502 tcg_gen_mov_i64(cpu_fir[rc], cpu_ir[ra]);
2503 else
2504 tcg_gen_movi_i64(cpu_fir[rc], 0);
2505 }
2506 break;
2507 case 0x2A:
2508 /* SQRTG */
2509 if (ctx->tb->flags & TB_FLAGS_AMASK_FIX) {
2510 gen_fsqrtg(rb, rc);
2511 break;
2512 }
2513 goto invalid_opc;
2514 case 0x02B:
2515 /* SQRTT */
2516 if (ctx->tb->flags & TB_FLAGS_AMASK_FIX) {
2517 gen_fsqrtt(ctx, rb, rc, fn11);
2518 break;
2519 }
2520 goto invalid_opc;
2521 default:
2522 goto invalid_opc;
2523 }
2524 break;
2525 case 0x15:
2526 /* VAX floating point */
2527 /* XXX: rounding mode and trap are ignored (!) */
2528 switch (fpfn) { /* fn11 & 0x3F */
2529 case 0x00:
2530 /* ADDF */
2531 gen_faddf(ra, rb, rc);
2532 break;
2533 case 0x01:
2534 /* SUBF */
2535 gen_fsubf(ra, rb, rc);
2536 break;
2537 case 0x02:
2538 /* MULF */
2539 gen_fmulf(ra, rb, rc);
2540 break;
2541 case 0x03:
2542 /* DIVF */
2543 gen_fdivf(ra, rb, rc);
2544 break;
2545 case 0x1E:
2546 /* CVTDG */
2547 #if 0 // TODO
2548 gen_fcvtdg(rb, rc);
2549 #else
2550 goto invalid_opc;
2551 #endif
2552 break;
2553 case 0x20:
2554 /* ADDG */
2555 gen_faddg(ra, rb, rc);
2556 break;
2557 case 0x21:
2558 /* SUBG */
2559 gen_fsubg(ra, rb, rc);
2560 break;
2561 case 0x22:
2562 /* MULG */
2563 gen_fmulg(ra, rb, rc);
2564 break;
2565 case 0x23:
2566 /* DIVG */
2567 gen_fdivg(ra, rb, rc);
2568 break;
2569 case 0x25:
2570 /* CMPGEQ */
2571 gen_fcmpgeq(ra, rb, rc);
2572 break;
2573 case 0x26:
2574 /* CMPGLT */
2575 gen_fcmpglt(ra, rb, rc);
2576 break;
2577 case 0x27:
2578 /* CMPGLE */
2579 gen_fcmpgle(ra, rb, rc);
2580 break;
2581 case 0x2C:
2582 /* CVTGF */
2583 gen_fcvtgf(rb, rc);
2584 break;
2585 case 0x2D:
2586 /* CVTGD */
2587 #if 0 // TODO
2588 gen_fcvtgd(rb, rc);
2589 #else
2590 goto invalid_opc;
2591 #endif
2592 break;
2593 case 0x2F:
2594 /* CVTGQ */
2595 gen_fcvtgq(rb, rc);
2596 break;
2597 case 0x3C:
2598 /* CVTQF */
2599 gen_fcvtqf(rb, rc);
2600 break;
2601 case 0x3E:
2602 /* CVTQG */
2603 gen_fcvtqg(rb, rc);
2604 break;
2605 default:
2606 goto invalid_opc;
2607 }
2608 break;
2609 case 0x16:
2610 /* IEEE floating-point */
2611 switch (fpfn) { /* fn11 & 0x3F */
2612 case 0x00:
2613 /* ADDS */
2614 gen_fadds(ctx, ra, rb, rc, fn11);
2615 break;
2616 case 0x01:
2617 /* SUBS */
2618 gen_fsubs(ctx, ra, rb, rc, fn11);
2619 break;
2620 case 0x02:
2621 /* MULS */
2622 gen_fmuls(ctx, ra, rb, rc, fn11);
2623 break;
2624 case 0x03:
2625 /* DIVS */
2626 gen_fdivs(ctx, ra, rb, rc, fn11);
2627 break;
2628 case 0x20:
2629 /* ADDT */
2630 gen_faddt(ctx, ra, rb, rc, fn11);
2631 break;
2632 case 0x21:
2633 /* SUBT */
2634 gen_fsubt(ctx, ra, rb, rc, fn11);
2635 break;
2636 case 0x22:
2637 /* MULT */
2638 gen_fmult(ctx, ra, rb, rc, fn11);
2639 break;
2640 case 0x23:
2641 /* DIVT */
2642 gen_fdivt(ctx, ra, rb, rc, fn11);
2643 break;
2644 case 0x24:
2645 /* CMPTUN */
2646 gen_fcmptun(ctx, ra, rb, rc, fn11);
2647 break;
2648 case 0x25:
2649 /* CMPTEQ */
2650 gen_fcmpteq(ctx, ra, rb, rc, fn11);
2651 break;
2652 case 0x26:
2653 /* CMPTLT */
2654 gen_fcmptlt(ctx, ra, rb, rc, fn11);
2655 break;
2656 case 0x27:
2657 /* CMPTLE */
2658 gen_fcmptle(ctx, ra, rb, rc, fn11);
2659 break;
2660 case 0x2C:
2661 if (fn11 == 0x2AC || fn11 == 0x6AC) {
2662 /* CVTST */
2663 gen_fcvtst(ctx, rb, rc, fn11);
2664 } else {
2665 /* CVTTS */
2666 gen_fcvtts(ctx, rb, rc, fn11);
2667 }
2668 break;
2669 case 0x2F:
2670 /* CVTTQ */
2671 gen_fcvttq(ctx, rb, rc, fn11);
2672 break;
2673 case 0x3C:
2674 /* CVTQS */
2675 gen_fcvtqs(ctx, rb, rc, fn11);
2676 break;
2677 case 0x3E:
2678 /* CVTQT */
2679 gen_fcvtqt(ctx, rb, rc, fn11);
2680 break;
2681 default:
2682 goto invalid_opc;
2683 }
2684 break;
2685 case 0x17:
2686 switch (fn11) {
2687 case 0x010:
2688 /* CVTLQ */
2689 gen_fcvtlq(rb, rc);
2690 break;
2691 case 0x020:
2692 if (likely(rc != 31)) {
2693 if (ra == rb) {
2694 /* FMOV */
2695 if (ra == 31)
2696 tcg_gen_movi_i64(cpu_fir[rc], 0);
2697 else
2698 tcg_gen_mov_i64(cpu_fir[rc], cpu_fir[ra]);
2699 } else {
2700 /* CPYS */
2701 gen_fcpys(ra, rb, rc);
2702 }
2703 }
2704 break;
2705 case 0x021:
2706 /* CPYSN */
2707 gen_fcpysn(ra, rb, rc);
2708 break;
2709 case 0x022:
2710 /* CPYSE */
2711 gen_fcpyse(ra, rb, rc);
2712 break;
2713 case 0x024:
2714 /* MT_FPCR */
2715 if (likely(ra != 31))
2716 gen_helper_store_fpcr(cpu_env, cpu_fir[ra]);
2717 else {
2718 TCGv tmp = tcg_const_i64(0);
2719 gen_helper_store_fpcr(cpu_env, tmp);
2720 tcg_temp_free(tmp);
2721 }
2722 break;
2723 case 0x025:
2724 /* MF_FPCR */
2725 if (likely(ra != 31))
2726 gen_helper_load_fpcr(cpu_fir[ra], cpu_env);
2727 break;
2728 case 0x02A:
2729 /* FCMOVEQ */
2730 gen_fcmov(TCG_COND_EQ, ra, rb, rc);
2731 break;
2732 case 0x02B:
2733 /* FCMOVNE */
2734 gen_fcmov(TCG_COND_NE, ra, rb, rc);
2735 break;
2736 case 0x02C:
2737 /* FCMOVLT */
2738 gen_fcmov(TCG_COND_LT, ra, rb, rc);
2739 break;
2740 case 0x02D:
2741 /* FCMOVGE */
2742 gen_fcmov(TCG_COND_GE, ra, rb, rc);
2743 break;
2744 case 0x02E:
2745 /* FCMOVLE */
2746 gen_fcmov(TCG_COND_LE, ra, rb, rc);
2747 break;
2748 case 0x02F:
2749 /* FCMOVGT */
2750 gen_fcmov(TCG_COND_GT, ra, rb, rc);
2751 break;
2752 case 0x030:
2753 /* CVTQL */
2754 gen_fcvtql(rb, rc);
2755 break;
2756 case 0x130:
2757 /* CVTQL/V */
2758 case 0x530:
2759 /* CVTQL/SV */
2760 /* ??? I'm pretty sure there's nothing that /sv needs to do that
2761 /v doesn't do. The only thing I can think is that /sv is a
2762 valid instruction merely for completeness in the ISA. */
2763 gen_fcvtql_v(ctx, rb, rc);
2764 break;
2765 default:
2766 goto invalid_opc;
2767 }
2768 break;
2769 case 0x18:
2770 switch ((uint16_t)disp16) {
2771 case 0x0000:
2772 /* TRAPB */
2773 /* No-op. */
2774 break;
2775 case 0x0400:
2776 /* EXCB */
2777 /* No-op. */
2778 break;
2779 case 0x4000:
2780 /* MB */
2781 /* No-op */
2782 break;
2783 case 0x4400:
2784 /* WMB */
2785 /* No-op */
2786 break;
2787 case 0x8000:
2788 /* FETCH */
2789 /* No-op */
2790 break;
2791 case 0xA000:
2792 /* FETCH_M */
2793 /* No-op */
2794 break;
2795 case 0xC000:
2796 /* RPCC */
2797 if (ra != 31) {
2798 if (use_icount) {
2799 gen_io_start();
2800 gen_helper_load_pcc(cpu_ir[ra], cpu_env);
2801 gen_io_end();
2802 ret = EXIT_PC_STALE;
2803 } else {
2804 gen_helper_load_pcc(cpu_ir[ra], cpu_env);
2805 }
2806 }
2807 break;
2808 case 0xE000:
2809 /* RC */
2810 gen_rx(ra, 0);
2811 break;
2812 case 0xE800:
2813 /* ECB */
2814 break;
2815 case 0xF000:
2816 /* RS */
2817 gen_rx(ra, 1);
2818 break;
2819 case 0xF800:
2820 /* WH64 */
2821 /* No-op */
2822 break;
2823 default:
2824 goto invalid_opc;
2825 }
2826 break;
2827 case 0x19:
2828 /* HW_MFPR (PALcode) */
2829 #ifndef CONFIG_USER_ONLY
2830 if (ctx->tb->flags & TB_FLAGS_PAL_MODE) {
2831 return gen_mfpr(ra, insn & 0xffff);
2832 }
2833 #endif
2834 goto invalid_opc;
2835 case 0x1A:
2836 /* JMP, JSR, RET, JSR_COROUTINE. These only differ by the branch
2837 prediction stack action, which of course we don't implement. */
2838 if (rb != 31) {
2839 tcg_gen_andi_i64(cpu_pc, cpu_ir[rb], ~3);
2840 } else {
2841 tcg_gen_movi_i64(cpu_pc, 0);
2842 }
2843 if (ra != 31) {
2844 tcg_gen_movi_i64(cpu_ir[ra], ctx->pc);
2845 }
2846 ret = EXIT_PC_UPDATED;
2847 break;
2848 case 0x1B:
2849 /* HW_LD (PALcode) */
2850 #ifndef CONFIG_USER_ONLY
2851 if (ctx->tb->flags & TB_FLAGS_PAL_MODE) {
2852 TCGv addr;
2853
2854 if (ra == 31) {
2855 break;
2856 }
2857
2858 addr = tcg_temp_new();
2859 if (rb != 31)
2860 tcg_gen_addi_i64(addr, cpu_ir[rb], disp12);
2861 else
2862 tcg_gen_movi_i64(addr, disp12);
2863 switch ((insn >> 12) & 0xF) {
2864 case 0x0:
2865 /* Longword physical access (hw_ldl/p) */
2866 gen_helper_ldl_phys(cpu_ir[ra], addr);
2867 break;
2868 case 0x1:
2869 /* Quadword physical access (hw_ldq/p) */
2870 gen_helper_ldq_phys(cpu_ir[ra], addr);
2871 break;
2872 case 0x2:
2873 /* Longword physical access with lock (hw_ldl_l/p) */
2874 gen_helper_ldl_l_phys(cpu_ir[ra], cpu_env, addr);
2875 break;
2876 case 0x3:
2877 /* Quadword physical access with lock (hw_ldq_l/p) */
2878 gen_helper_ldq_l_phys(cpu_ir[ra], cpu_env, addr);
2879 break;
2880 case 0x4:
2881 /* Longword virtual PTE fetch (hw_ldl/v) */
2882 goto invalid_opc;
2883 case 0x5:
2884 /* Quadword virtual PTE fetch (hw_ldq/v) */
2885 goto invalid_opc;
2886 break;
2887 case 0x6:
2888 /* Incpu_ir[ra]id */
2889 goto invalid_opc;
2890 case 0x7:
2891 /* Incpu_ir[ra]id */
2892 goto invalid_opc;
2893 case 0x8:
2894 /* Longword virtual access (hw_ldl) */
2895 goto invalid_opc;
2896 case 0x9:
2897 /* Quadword virtual access (hw_ldq) */
2898 goto invalid_opc;
2899 case 0xA:
2900 /* Longword virtual access with protection check (hw_ldl/w) */
2901 tcg_gen_qemu_ld32s(cpu_ir[ra], addr, MMU_KERNEL_IDX);
2902 break;
2903 case 0xB:
2904 /* Quadword virtual access with protection check (hw_ldq/w) */
2905 tcg_gen_qemu_ld64(cpu_ir[ra], addr, MMU_KERNEL_IDX);
2906 break;
2907 case 0xC:
2908 /* Longword virtual access with alt access mode (hw_ldl/a)*/
2909 goto invalid_opc;
2910 case 0xD:
2911 /* Quadword virtual access with alt access mode (hw_ldq/a) */
2912 goto invalid_opc;
2913 case 0xE:
2914 /* Longword virtual access with alternate access mode and
2915 protection checks (hw_ldl/wa) */
2916 tcg_gen_qemu_ld32s(cpu_ir[ra], addr, MMU_USER_IDX);
2917 break;
2918 case 0xF:
2919 /* Quadword virtual access with alternate access mode and
2920 protection checks (hw_ldq/wa) */
2921 tcg_gen_qemu_ld64(cpu_ir[ra], addr, MMU_USER_IDX);
2922 break;
2923 }
2924 tcg_temp_free(addr);
2925 break;
2926 }
2927 #endif
2928 goto invalid_opc;
2929 case 0x1C:
2930 switch (fn7) {
2931 case 0x00:
2932 /* SEXTB */
2933 if ((ctx->tb->flags & TB_FLAGS_AMASK_BWX) == 0) {
2934 goto invalid_opc;
2935 }
2936 if (likely(rc != 31)) {
2937 if (islit)
2938 tcg_gen_movi_i64(cpu_ir[rc], (int64_t)((int8_t)lit));
2939 else
2940 tcg_gen_ext8s_i64(cpu_ir[rc], cpu_ir[rb]);
2941 }
2942 break;
2943 case 0x01:
2944 /* SEXTW */
2945 if (ctx->tb->flags & TB_FLAGS_AMASK_BWX) {
2946 if (likely(rc != 31)) {
2947 if (islit) {
2948 tcg_gen_movi_i64(cpu_ir[rc], (int64_t)((int16_t)lit));
2949 } else {
2950 tcg_gen_ext16s_i64(cpu_ir[rc], cpu_ir[rb]);
2951 }
2952 }
2953 break;
2954 }
2955 goto invalid_opc;
2956 case 0x30:
2957 /* CTPOP */
2958 if (ctx->tb->flags & TB_FLAGS_AMASK_CIX) {
2959 if (likely(rc != 31)) {
2960 if (islit) {
2961 tcg_gen_movi_i64(cpu_ir[rc], ctpop64(lit));
2962 } else {
2963 gen_helper_ctpop(cpu_ir[rc], cpu_ir[rb]);
2964 }
2965 }
2966 break;
2967 }
2968 goto invalid_opc;
2969 case 0x31:
2970 /* PERR */
2971 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
2972 gen_perr(ra, rb, rc, islit, lit);
2973 break;
2974 }
2975 goto invalid_opc;
2976 case 0x32:
2977 /* CTLZ */
2978 if (ctx->tb->flags & TB_FLAGS_AMASK_CIX) {
2979 if (likely(rc != 31)) {
2980 if (islit) {
2981 tcg_gen_movi_i64(cpu_ir[rc], clz64(lit));
2982 } else {
2983 gen_helper_ctlz(cpu_ir[rc], cpu_ir[rb]);
2984 }
2985 }
2986 break;
2987 }
2988 goto invalid_opc;
2989 case 0x33:
2990 /* CTTZ */
2991 if (ctx->tb->flags & TB_FLAGS_AMASK_CIX) {
2992 if (likely(rc != 31)) {
2993 if (islit) {
2994 tcg_gen_movi_i64(cpu_ir[rc], ctz64(lit));
2995 } else {
2996 gen_helper_cttz(cpu_ir[rc], cpu_ir[rb]);
2997 }
2998 }
2999 break;
3000 }
3001 goto invalid_opc;
3002 case 0x34:
3003 /* UNPKBW */
3004 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3005 if (real_islit || ra != 31) {
3006 goto invalid_opc;
3007 }
3008 gen_unpkbw(rb, rc);
3009 break;
3010 }
3011 goto invalid_opc;
3012 case 0x35:
3013 /* UNPKBL */
3014 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3015 if (real_islit || ra != 31) {
3016 goto invalid_opc;
3017 }
3018 gen_unpkbl(rb, rc);
3019 break;
3020 }
3021 goto invalid_opc;
3022 case 0x36:
3023 /* PKWB */
3024 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3025 if (real_islit || ra != 31) {
3026 goto invalid_opc;
3027 }
3028 gen_pkwb(rb, rc);
3029 break;
3030 }
3031 goto invalid_opc;
3032 case 0x37:
3033 /* PKLB */
3034 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3035 if (real_islit || ra != 31) {
3036 goto invalid_opc;
3037 }
3038 gen_pklb(rb, rc);
3039 break;
3040 }
3041 goto invalid_opc;
3042 case 0x38:
3043 /* MINSB8 */
3044 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3045 gen_minsb8(ra, rb, rc, islit, lit);
3046 break;
3047 }
3048 goto invalid_opc;
3049 case 0x39:
3050 /* MINSW4 */
3051 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3052 gen_minsw4(ra, rb, rc, islit, lit);
3053 break;
3054 }
3055 goto invalid_opc;
3056 case 0x3A:
3057 /* MINUB8 */
3058 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3059 gen_minub8(ra, rb, rc, islit, lit);
3060 break;
3061 }
3062 goto invalid_opc;
3063 case 0x3B:
3064 /* MINUW4 */
3065 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3066 gen_minuw4(ra, rb, rc, islit, lit);
3067 break;
3068 }
3069 goto invalid_opc;
3070 case 0x3C:
3071 /* MAXUB8 */
3072 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3073 gen_maxub8(ra, rb, rc, islit, lit);
3074 break;
3075 }
3076 goto invalid_opc;
3077 case 0x3D:
3078 /* MAXUW4 */
3079 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3080 gen_maxuw4(ra, rb, rc, islit, lit);
3081 break;
3082 }
3083 goto invalid_opc;
3084 case 0x3E:
3085 /* MAXSB8 */
3086 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3087 gen_maxsb8(ra, rb, rc, islit, lit);
3088 break;
3089 }
3090 goto invalid_opc;
3091 case 0x3F:
3092 /* MAXSW4 */
3093 if (ctx->tb->flags & TB_FLAGS_AMASK_MVI) {
3094 gen_maxsw4(ra, rb, rc, islit, lit);
3095 break;
3096 }
3097 goto invalid_opc;
3098 case 0x70:
3099 /* FTOIT */
3100 if ((ctx->tb->flags & TB_FLAGS_AMASK_FIX) == 0) {
3101 goto invalid_opc;
3102 }
3103 if (likely(rc != 31)) {
3104 if (ra != 31)
3105 tcg_gen_mov_i64(cpu_ir[rc], cpu_fir[ra]);
3106 else
3107 tcg_gen_movi_i64(cpu_ir[rc], 0);
3108 }
3109 break;
3110 case 0x78:
3111 /* FTOIS */
3112 if ((ctx->tb->flags & TB_FLAGS_AMASK_FIX) == 0) {
3113 goto invalid_opc;
3114 }
3115 if (rc != 31) {
3116 TCGv_i32 tmp1 = tcg_temp_new_i32();
3117 if (ra != 31)
3118 gen_helper_s_to_memory(tmp1, cpu_fir[ra]);
3119 else {
3120 TCGv tmp2 = tcg_const_i64(0);
3121 gen_helper_s_to_memory(tmp1, tmp2);
3122 tcg_temp_free(tmp2);
3123 }
3124 tcg_gen_ext_i32_i64(cpu_ir[rc], tmp1);
3125 tcg_temp_free_i32(tmp1);
3126 }
3127 break;
3128 default:
3129 goto invalid_opc;
3130 }
3131 break;
3132 case 0x1D:
3133 /* HW_MTPR (PALcode) */
3134 #ifndef CONFIG_USER_ONLY
3135 if (ctx->tb->flags & TB_FLAGS_PAL_MODE) {
3136 return gen_mtpr(ctx, rb, insn & 0xffff);
3137 }
3138 #endif
3139 goto invalid_opc;
3140 case 0x1E:
3141 /* HW_RET (PALcode) */
3142 #ifndef CONFIG_USER_ONLY
3143 if (ctx->tb->flags & TB_FLAGS_PAL_MODE) {
3144 if (rb == 31) {
3145 /* Pre-EV6 CPUs interpreted this as HW_REI, loading the return
3146 address from EXC_ADDR. This turns out to be useful for our
3147 emulation PALcode, so continue to accept it. */
3148 TCGv tmp = tcg_temp_new();
3149 tcg_gen_ld_i64(tmp, cpu_env, offsetof(CPUAlphaState, exc_addr));
3150 gen_helper_hw_ret(cpu_env, tmp);
3151 tcg_temp_free(tmp);
3152 } else {
3153 gen_helper_hw_ret(cpu_env, cpu_ir[rb]);
3154 }
3155 ret = EXIT_PC_UPDATED;
3156 break;
3157 }
3158 #endif
3159 goto invalid_opc;
3160 case 0x1F:
3161 /* HW_ST (PALcode) */
3162 #ifndef CONFIG_USER_ONLY
3163 if (ctx->tb->flags & TB_FLAGS_PAL_MODE) {
3164 TCGv addr, val;
3165 addr = tcg_temp_new();
3166 if (rb != 31)
3167 tcg_gen_addi_i64(addr, cpu_ir[rb], disp12);
3168 else
3169 tcg_gen_movi_i64(addr, disp12);
3170 if (ra != 31)
3171 val = cpu_ir[ra];
3172 else {
3173 val = tcg_temp_new();
3174 tcg_gen_movi_i64(val, 0);
3175 }
3176 switch ((insn >> 12) & 0xF) {
3177 case 0x0:
3178 /* Longword physical access */
3179 gen_helper_stl_phys(addr, val);
3180 break;
3181 case 0x1:
3182 /* Quadword physical access */
3183 gen_helper_stq_phys(addr, val);
3184 break;
3185 case 0x2:
3186 /* Longword physical access with lock */
3187 gen_helper_stl_c_phys(val, cpu_env, addr, val);
3188 break;
3189 case 0x3:
3190 /* Quadword physical access with lock */
3191 gen_helper_stq_c_phys(val, cpu_env, addr, val);
3192 break;
3193 case 0x4:
3194 /* Longword virtual access */
3195 goto invalid_opc;
3196 case 0x5:
3197 /* Quadword virtual access */
3198 goto invalid_opc;
3199 case 0x6:
3200 /* Invalid */
3201 goto invalid_opc;
3202 case 0x7:
3203 /* Invalid */
3204 goto invalid_opc;
3205 case 0x8:
3206 /* Invalid */
3207 goto invalid_opc;
3208 case 0x9:
3209 /* Invalid */
3210 goto invalid_opc;
3211 case 0xA:
3212 /* Invalid */
3213 goto invalid_opc;
3214 case 0xB:
3215 /* Invalid */
3216 goto invalid_opc;
3217 case 0xC:
3218 /* Longword virtual access with alternate access mode */
3219 goto invalid_opc;
3220 case 0xD:
3221 /* Quadword virtual access with alternate access mode */
3222 goto invalid_opc;
3223 case 0xE:
3224 /* Invalid */
3225 goto invalid_opc;
3226 case 0xF:
3227 /* Invalid */
3228 goto invalid_opc;
3229 }
3230 if (ra == 31)
3231 tcg_temp_free(val);
3232 tcg_temp_free(addr);
3233 break;
3234 }
3235 #endif
3236 goto invalid_opc;
3237 case 0x20:
3238 /* LDF */
3239 gen_load_mem(ctx, &gen_qemu_ldf, ra, rb, disp16, 1, 0);
3240 break;
3241 case 0x21:
3242 /* LDG */
3243 gen_load_mem(ctx, &gen_qemu_ldg, ra, rb, disp16, 1, 0);
3244 break;
3245 case 0x22:
3246 /* LDS */
3247 gen_load_mem(ctx, &gen_qemu_lds, ra, rb, disp16, 1, 0);
3248 break;
3249 case 0x23:
3250 /* LDT */
3251 gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 1, 0);
3252 break;
3253 case 0x24:
3254 /* STF */
3255 gen_store_mem(ctx, &gen_qemu_stf, ra, rb, disp16, 1, 0);
3256 break;
3257 case 0x25:
3258 /* STG */
3259 gen_store_mem(ctx, &gen_qemu_stg, ra, rb, disp16, 1, 0);
3260 break;
3261 case 0x26:
3262 /* STS */
3263 gen_store_mem(ctx, &gen_qemu_sts, ra, rb, disp16, 1, 0);
3264 break;
3265 case 0x27:
3266 /* STT */
3267 gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 1, 0);
3268 break;
3269 case 0x28:
3270 /* LDL */
3271 gen_load_mem(ctx, &tcg_gen_qemu_ld32s, ra, rb, disp16, 0, 0);
3272 break;
3273 case 0x29:
3274 /* LDQ */
3275 gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 0, 0);
3276 break;
3277 case 0x2A:
3278 /* LDL_L */
3279 gen_load_mem(ctx, &gen_qemu_ldl_l, ra, rb, disp16, 0, 0);
3280 break;
3281 case 0x2B:
3282 /* LDQ_L */
3283 gen_load_mem(ctx, &gen_qemu_ldq_l, ra, rb, disp16, 0, 0);
3284 break;
3285 case 0x2C:
3286 /* STL */
3287 gen_store_mem(ctx, &tcg_gen_qemu_st32, ra, rb, disp16, 0, 0);
3288 break;
3289 case 0x2D:
3290 /* STQ */
3291 gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 0, 0);
3292 break;
3293 case 0x2E:
3294 /* STL_C */
3295 ret = gen_store_conditional(ctx, ra, rb, disp16, 0);
3296 break;
3297 case 0x2F:
3298 /* STQ_C */
3299 ret = gen_store_conditional(ctx, ra, rb, disp16, 1);
3300 break;
3301 case 0x30:
3302 /* BR */
3303 ret = gen_bdirect(ctx, ra, disp21);
3304 break;
3305 case 0x31: /* FBEQ */
3306 ret = gen_fbcond(ctx, TCG_COND_EQ, ra, disp21);
3307 break;
3308 case 0x32: /* FBLT */
3309 ret = gen_fbcond(ctx, TCG_COND_LT, ra, disp21);
3310 break;
3311 case 0x33: /* FBLE */
3312 ret = gen_fbcond(ctx, TCG_COND_LE, ra, disp21);
3313 break;
3314 case 0x34:
3315 /* BSR */
3316 ret = gen_bdirect(ctx, ra, disp21);
3317 break;
3318 case 0x35: /* FBNE */
3319 ret = gen_fbcond(ctx, TCG_COND_NE, ra, disp21);
3320 break;
3321 case 0x36: /* FBGE */
3322 ret = gen_fbcond(ctx, TCG_COND_GE, ra, disp21);
3323 break;
3324 case 0x37: /* FBGT */
3325 ret = gen_fbcond(ctx, TCG_COND_GT, ra, disp21);
3326 break;
3327 case 0x38:
3328 /* BLBC */
3329 ret = gen_bcond(ctx, TCG_COND_EQ, ra, disp21, 1);
3330 break;
3331 case 0x39:
3332 /* BEQ */
3333 ret = gen_bcond(ctx, TCG_COND_EQ, ra, disp21, 0);
3334 break;
3335 case 0x3A:
3336 /* BLT */
3337 ret = gen_bcond(ctx, TCG_COND_LT, ra, disp21, 0);
3338 break;
3339 case 0x3B:
3340 /* BLE */
3341 ret = gen_bcond(ctx, TCG_COND_LE, ra, disp21, 0);
3342 break;
3343 case 0x3C:
3344 /* BLBS */
3345 ret = gen_bcond(ctx, TCG_COND_NE, ra, disp21, 1);
3346 break;
3347 case 0x3D:
3348 /* BNE */
3349 ret = gen_bcond(ctx, TCG_COND_NE, ra, disp21, 0);
3350 break;
3351 case 0x3E:
3352 /* BGE */
3353 ret = gen_bcond(ctx, TCG_COND_GE, ra, disp21, 0);
3354 break;
3355 case 0x3F:
3356 /* BGT */
3357 ret = gen_bcond(ctx, TCG_COND_GT, ra, disp21, 0);
3358 break;
3359 invalid_opc:
3360 ret = gen_invalid(ctx);
3361 break;
3362 }
3363
3364 return ret;
3365 }
3366
3367 static inline void gen_intermediate_code_internal(CPUAlphaState *env,
3368 TranslationBlock *tb,
3369 int search_pc)
3370 {
3371 DisasContext ctx, *ctxp = &ctx;
3372 target_ulong pc_start;
3373 uint32_t insn;
3374 uint16_t *gen_opc_end;
3375 CPUBreakpoint *bp;
3376 int j, lj = -1;
3377 ExitStatus ret;
3378 int num_insns;
3379 int max_insns;
3380
3381 pc_start = tb->pc;
3382 gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
3383
3384 ctx.tb = tb;
3385 ctx.env = env;
3386 ctx.pc = pc_start;
3387 ctx.mem_idx = cpu_mmu_index(env);
3388
3389 /* ??? Every TB begins with unset rounding mode, to be initialized on
3390 the first fp insn of the TB. Alternately we could define a proper
3391 default for every TB (e.g. QUAL_RM_N or QUAL_RM_D) and make sure
3392 to reset the FP_STATUS to that default at the end of any TB that
3393 changes the default. We could even (gasp) dynamiclly figure out
3394 what default would be most efficient given the running program. */
3395 ctx.tb_rm = -1;
3396 /* Similarly for flush-to-zero. */
3397 ctx.tb_ftz = -1;
3398
3399 num_insns = 0;
3400 max_insns = tb->cflags & CF_COUNT_MASK;
3401 if (max_insns == 0)
3402 max_insns = CF_COUNT_MASK;
3403
3404 gen_icount_start();
3405 do {
3406 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
3407 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
3408 if (bp->pc == ctx.pc) {
3409 gen_excp(&ctx, EXCP_DEBUG, 0);
3410 break;
3411 }
3412 }
3413 }
3414 if (search_pc) {
3415 j = gen_opc_ptr - gen_opc_buf;
3416 if (lj < j) {
3417 lj++;
3418 while (lj < j)
3419 gen_opc_instr_start[lj++] = 0;
3420 }
3421 gen_opc_pc[lj] = ctx.pc;
3422 gen_opc_instr_start[lj] = 1;
3423 gen_opc_icount[lj] = num_insns;
3424 }
3425 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
3426 gen_io_start();
3427 insn = cpu_ldl_code(env, ctx.pc);
3428 num_insns++;
3429
3430 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
3431 tcg_gen_debug_insn_start(ctx.pc);
3432 }
3433
3434 ctx.pc += 4;
3435 ret = translate_one(ctxp, insn);
3436
3437 /* If we reach a page boundary, are single stepping,
3438 or exhaust instruction count, stop generation. */
3439 if (ret == NO_EXIT
3440 && ((ctx.pc & (TARGET_PAGE_SIZE - 1)) == 0
3441 || gen_opc_ptr >= gen_opc_end
3442 || num_insns >= max_insns
3443 || singlestep
3444 || env->singlestep_enabled)) {
3445 ret = EXIT_PC_STALE;
3446 }
3447 } while (ret == NO_EXIT);
3448
3449 if (tb->cflags & CF_LAST_IO) {
3450 gen_io_end();
3451 }
3452
3453 switch (ret) {
3454 case EXIT_GOTO_TB:
3455 case EXIT_NORETURN:
3456 break;
3457 case EXIT_PC_STALE:
3458 tcg_gen_movi_i64(cpu_pc, ctx.pc);
3459 /* FALLTHRU */
3460 case EXIT_PC_UPDATED:
3461 if (env->singlestep_enabled) {
3462 gen_excp_1(EXCP_DEBUG, 0);
3463 } else {
3464 tcg_gen_exit_tb(0);
3465 }
3466 break;
3467 default:
3468 abort();
3469 }
3470
3471 gen_icount_end(tb, num_insns);
3472 *gen_opc_ptr = INDEX_op_end;
3473 if (search_pc) {
3474 j = gen_opc_ptr - gen_opc_buf;
3475 lj++;
3476 while (lj <= j)
3477 gen_opc_instr_start[lj++] = 0;
3478 } else {
3479 tb->size = ctx.pc - pc_start;
3480 tb->icount = num_insns;
3481 }
3482
3483 #ifdef DEBUG_DISAS
3484 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
3485 qemu_log("IN: %s\n", lookup_symbol(pc_start));
3486 log_target_disas(pc_start, ctx.pc - pc_start, 1);
3487 qemu_log("\n");
3488 }
3489 #endif
3490 }
3491
3492 void gen_intermediate_code (CPUAlphaState *env, struct TranslationBlock *tb)
3493 {
3494 gen_intermediate_code_internal(env, tb, 0);
3495 }
3496
3497 void gen_intermediate_code_pc (CPUAlphaState *env, struct TranslationBlock *tb)
3498 {
3499 gen_intermediate_code_internal(env, tb, 1);
3500 }
3501
3502 struct cpu_def_t {
3503 const char *name;
3504 int implver, amask;
3505 };
3506
3507 static const struct cpu_def_t cpu_defs[] = {
3508 { "ev4", IMPLVER_2106x, 0 },
3509 { "ev5", IMPLVER_21164, 0 },
3510 { "ev56", IMPLVER_21164, AMASK_BWX },
3511 { "pca56", IMPLVER_21164, AMASK_BWX | AMASK_MVI },
3512 { "ev6", IMPLVER_21264, AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP },
3513 { "ev67", IMPLVER_21264, (AMASK_BWX | AMASK_FIX | AMASK_CIX
3514 | AMASK_MVI | AMASK_TRAP | AMASK_PREFETCH), },
3515 { "ev68", IMPLVER_21264, (AMASK_BWX | AMASK_FIX | AMASK_CIX
3516 | AMASK_MVI | AMASK_TRAP | AMASK_PREFETCH), },
3517 { "21064", IMPLVER_2106x, 0 },
3518 { "21164", IMPLVER_21164, 0 },
3519 { "21164a", IMPLVER_21164, AMASK_BWX },
3520 { "21164pc", IMPLVER_21164, AMASK_BWX | AMASK_MVI },
3521 { "21264", IMPLVER_21264, AMASK_BWX | AMASK_FIX | AMASK_MVI | AMASK_TRAP },
3522 { "21264a", IMPLVER_21264, (AMASK_BWX | AMASK_FIX | AMASK_CIX
3523 | AMASK_MVI | AMASK_TRAP | AMASK_PREFETCH), }
3524 };
3525
3526 CPUAlphaState * cpu_alpha_init (const char *cpu_model)
3527 {
3528 AlphaCPU *cpu;
3529 CPUAlphaState *env;
3530 int implver, amask, i, max;
3531
3532 cpu = ALPHA_CPU(object_new(TYPE_ALPHA_CPU));
3533 env = &cpu->env;
3534
3535 alpha_translate_init();
3536
3537 /* Default to ev67; no reason not to emulate insns by default. */
3538 implver = IMPLVER_21264;
3539 amask = (AMASK_BWX | AMASK_FIX | AMASK_CIX | AMASK_MVI
3540 | AMASK_TRAP | AMASK_PREFETCH);
3541
3542 max = ARRAY_SIZE(cpu_defs);
3543 for (i = 0; i < max; i++) {
3544 if (strcmp (cpu_model, cpu_defs[i].name) == 0) {
3545 implver = cpu_defs[i].implver;
3546 amask = cpu_defs[i].amask;
3547 break;
3548 }
3549 }
3550 env->implver = implver;
3551 env->amask = amask;
3552
3553 qemu_init_vcpu(env);
3554 return env;
3555 }
3556
3557 void restore_state_to_opc(CPUAlphaState *env, TranslationBlock *tb, int pc_pos)
3558 {
3559 env->pc = gen_opc_pc[pc_pos];
3560 }
Qemu with PowerPC KVM improvements