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fdf9b3e8 FB |
1 | /* |
2 | * SH4 emulation | |
5fafdf24 | 3 | * |
fdf9b3e8 FB |
4 | * Copyright (c) 2005 Samuel Tardieu |
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, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | #include <assert.h> | |
21 | #include "exec.h" | |
22 | ||
fdf9b3e8 FB |
23 | #ifndef CONFIG_USER_ONLY |
24 | ||
25 | #define MMUSUFFIX _mmu | |
fdf9b3e8 FB |
26 | |
27 | #define SHIFT 0 | |
28 | #include "softmmu_template.h" | |
29 | ||
30 | #define SHIFT 1 | |
31 | #include "softmmu_template.h" | |
32 | ||
33 | #define SHIFT 2 | |
34 | #include "softmmu_template.h" | |
35 | ||
36 | #define SHIFT 3 | |
37 | #include "softmmu_template.h" | |
38 | ||
6ebbf390 | 39 | void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
fdf9b3e8 FB |
40 | { |
41 | TranslationBlock *tb; | |
42 | CPUState *saved_env; | |
43 | unsigned long pc; | |
44 | int ret; | |
45 | ||
46 | /* XXX: hack to restore env in all cases, even if not called from | |
47 | generated code */ | |
48 | saved_env = env; | |
49 | env = cpu_single_env; | |
6ebbf390 | 50 | ret = cpu_sh4_handle_mmu_fault(env, addr, is_write, mmu_idx, 1); |
fdf9b3e8 FB |
51 | if (ret) { |
52 | if (retaddr) { | |
53 | /* now we have a real cpu fault */ | |
54 | pc = (unsigned long) retaddr; | |
55 | tb = tb_find_pc(pc); | |
56 | if (tb) { | |
57 | /* the PC is inside the translated code. It means that we have | |
58 | a virtual CPU fault */ | |
59 | cpu_restore_state(tb, env, pc, NULL); | |
60 | } | |
61 | } | |
e6afc2f4 | 62 | cpu_loop_exit(); |
fdf9b3e8 FB |
63 | } |
64 | env = saved_env; | |
65 | } | |
66 | ||
67 | #endif | |
68 | ||
ea2b542a AJ |
69 | void helper_ldtlb(void) |
70 | { | |
71 | #ifdef CONFIG_USER_ONLY | |
72 | /* XXXXX */ | |
73 | assert(0); | |
74 | #else | |
75 | cpu_load_tlb(env); | |
76 | #endif | |
77 | } | |
78 | ||
e6afc2f4 AJ |
79 | void helper_raise_illegal_instruction(void) |
80 | { | |
81 | env->exception_index = 0x180; | |
82 | cpu_loop_exit(); | |
83 | } | |
84 | ||
85 | void helper_raise_slot_illegal_instruction(void) | |
86 | { | |
87 | env->exception_index = 0x1a0; | |
88 | cpu_loop_exit(); | |
89 | } | |
90 | ||
91 | void helper_debug(void) | |
92 | { | |
93 | env->exception_index = EXCP_DEBUG; | |
94 | cpu_loop_exit(); | |
95 | } | |
96 | ||
97 | void helper_sleep(void) | |
98 | { | |
99 | env->halted = 1; | |
100 | env->exception_index = EXCP_HLT; | |
101 | cpu_loop_exit(); | |
102 | } | |
103 | ||
104 | void helper_trapa(uint32_t tra) | |
105 | { | |
106 | env->tra = tra << 2; | |
107 | env->exception_index = 0x160; | |
108 | cpu_loop_exit(); | |
109 | } | |
110 | ||
6f06939b | 111 | uint32_t helper_addc(uint32_t arg0, uint32_t arg1) |
fdf9b3e8 FB |
112 | { |
113 | uint32_t tmp0, tmp1; | |
114 | ||
6f06939b AJ |
115 | tmp1 = arg0 + arg1; |
116 | tmp0 = arg1; | |
117 | arg1 = tmp1 + (env->sr & 1); | |
fdf9b3e8 FB |
118 | if (tmp0 > tmp1) |
119 | env->sr |= SR_T; | |
120 | else | |
121 | env->sr &= ~SR_T; | |
6f06939b | 122 | if (tmp1 > arg1) |
fdf9b3e8 | 123 | env->sr |= SR_T; |
6f06939b | 124 | return arg1; |
fdf9b3e8 FB |
125 | } |
126 | ||
6f06939b | 127 | uint32_t helper_addv(uint32_t arg0, uint32_t arg1) |
fdf9b3e8 FB |
128 | { |
129 | uint32_t dest, src, ans; | |
130 | ||
6f06939b | 131 | if ((int32_t) arg1 >= 0) |
fdf9b3e8 FB |
132 | dest = 0; |
133 | else | |
134 | dest = 1; | |
6f06939b | 135 | if ((int32_t) arg0 >= 0) |
fdf9b3e8 FB |
136 | src = 0; |
137 | else | |
138 | src = 1; | |
139 | src += dest; | |
6f06939b AJ |
140 | arg1 += arg0; |
141 | if ((int32_t) arg1 >= 0) | |
fdf9b3e8 FB |
142 | ans = 0; |
143 | else | |
144 | ans = 1; | |
145 | ans += dest; | |
146 | if (src == 0 || src == 2) { | |
147 | if (ans == 1) | |
148 | env->sr |= SR_T; | |
149 | else | |
150 | env->sr &= ~SR_T; | |
151 | } else | |
152 | env->sr &= ~SR_T; | |
6f06939b | 153 | return arg1; |
fdf9b3e8 FB |
154 | } |
155 | ||
156 | #define T (env->sr & SR_T) | |
157 | #define Q (env->sr & SR_Q ? 1 : 0) | |
158 | #define M (env->sr & SR_M ? 1 : 0) | |
159 | #define SETT env->sr |= SR_T | |
160 | #define CLRT env->sr &= ~SR_T | |
161 | #define SETQ env->sr |= SR_Q | |
162 | #define CLRQ env->sr &= ~SR_Q | |
163 | #define SETM env->sr |= SR_M | |
164 | #define CLRM env->sr &= ~SR_M | |
165 | ||
69d6275b | 166 | uint32_t helper_div1(uint32_t arg0, uint32_t arg1) |
fdf9b3e8 FB |
167 | { |
168 | uint32_t tmp0, tmp2; | |
169 | uint8_t old_q, tmp1 = 0xff; | |
170 | ||
69d6275b | 171 | //printf("div1 arg0=0x%08x arg1=0x%08x M=%d Q=%d T=%d\n", arg0, arg1, M, Q, T); |
fdf9b3e8 | 172 | old_q = Q; |
69d6275b | 173 | if ((0x80000000 & arg1) != 0) |
fdf9b3e8 FB |
174 | SETQ; |
175 | else | |
176 | CLRQ; | |
69d6275b AJ |
177 | tmp2 = arg0; |
178 | arg1 <<= 1; | |
179 | arg1 |= T; | |
fdf9b3e8 FB |
180 | switch (old_q) { |
181 | case 0: | |
182 | switch (M) { | |
183 | case 0: | |
69d6275b AJ |
184 | tmp0 = arg1; |
185 | arg1 -= tmp2; | |
186 | tmp1 = arg1 > tmp0; | |
fdf9b3e8 FB |
187 | switch (Q) { |
188 | case 0: | |
189 | if (tmp1) | |
190 | SETQ; | |
191 | else | |
192 | CLRQ; | |
193 | break; | |
194 | case 1: | |
195 | if (tmp1 == 0) | |
196 | SETQ; | |
197 | else | |
198 | CLRQ; | |
199 | break; | |
200 | } | |
201 | break; | |
202 | case 1: | |
69d6275b AJ |
203 | tmp0 = arg1; |
204 | arg1 += tmp2; | |
205 | tmp1 = arg1 < tmp0; | |
fdf9b3e8 FB |
206 | switch (Q) { |
207 | case 0: | |
208 | if (tmp1 == 0) | |
209 | SETQ; | |
210 | else | |
211 | CLRQ; | |
212 | break; | |
213 | case 1: | |
214 | if (tmp1) | |
215 | SETQ; | |
216 | else | |
217 | CLRQ; | |
218 | break; | |
219 | } | |
220 | break; | |
221 | } | |
222 | break; | |
223 | case 1: | |
224 | switch (M) { | |
225 | case 0: | |
69d6275b AJ |
226 | tmp0 = arg1; |
227 | arg1 += tmp2; | |
228 | tmp1 = arg1 < tmp0; | |
fdf9b3e8 FB |
229 | switch (Q) { |
230 | case 0: | |
231 | if (tmp1) | |
232 | SETQ; | |
233 | else | |
234 | CLRQ; | |
235 | break; | |
236 | case 1: | |
237 | if (tmp1 == 0) | |
238 | SETQ; | |
239 | else | |
240 | CLRQ; | |
241 | break; | |
242 | } | |
243 | break; | |
244 | case 1: | |
69d6275b AJ |
245 | tmp0 = arg1; |
246 | arg1 -= tmp2; | |
247 | tmp1 = arg1 > tmp0; | |
fdf9b3e8 FB |
248 | switch (Q) { |
249 | case 0: | |
250 | if (tmp1 == 0) | |
251 | SETQ; | |
252 | else | |
253 | CLRQ; | |
254 | break; | |
255 | case 1: | |
256 | if (tmp1) | |
257 | SETQ; | |
258 | else | |
259 | CLRQ; | |
260 | break; | |
261 | } | |
262 | break; | |
263 | } | |
264 | break; | |
265 | } | |
266 | if (Q == M) | |
267 | SETT; | |
268 | else | |
269 | CLRT; | |
69d6275b AJ |
270 | //printf("Output: arg1=0x%08x M=%d Q=%d T=%d\n", arg1, M, Q, T); |
271 | return arg1; | |
fdf9b3e8 FB |
272 | } |
273 | ||
6f06939b | 274 | void helper_macl(uint32_t arg0, uint32_t arg1) |
fdf9b3e8 FB |
275 | { |
276 | int64_t res; | |
277 | ||
278 | res = ((uint64_t) env->mach << 32) | env->macl; | |
6f06939b | 279 | res += (int64_t) (int32_t) arg0 *(int64_t) (int32_t) arg1; |
fdf9b3e8 FB |
280 | env->mach = (res >> 32) & 0xffffffff; |
281 | env->macl = res & 0xffffffff; | |
282 | if (env->sr & SR_S) { | |
283 | if (res < 0) | |
284 | env->mach |= 0xffff0000; | |
285 | else | |
286 | env->mach &= 0x00007fff; | |
287 | } | |
288 | } | |
289 | ||
6f06939b | 290 | void helper_macw(uint32_t arg0, uint32_t arg1) |
fdf9b3e8 FB |
291 | { |
292 | int64_t res; | |
293 | ||
294 | res = ((uint64_t) env->mach << 32) | env->macl; | |
6f06939b | 295 | res += (int64_t) (int16_t) arg0 *(int64_t) (int16_t) arg1; |
fdf9b3e8 FB |
296 | env->mach = (res >> 32) & 0xffffffff; |
297 | env->macl = res & 0xffffffff; | |
298 | if (env->sr & SR_S) { | |
299 | if (res < -0x80000000) { | |
300 | env->mach = 1; | |
301 | env->macl = 0x80000000; | |
302 | } else if (res > 0x000000007fffffff) { | |
303 | env->mach = 1; | |
304 | env->macl = 0x7fffffff; | |
305 | } | |
306 | } | |
307 | } | |
308 | ||
6f06939b | 309 | uint32_t helper_negc(uint32_t arg) |
fdf9b3e8 FB |
310 | { |
311 | uint32_t temp; | |
312 | ||
6f06939b AJ |
313 | temp = -arg; |
314 | arg = temp - (env->sr & SR_T); | |
fdf9b3e8 FB |
315 | if (0 < temp) |
316 | env->sr |= SR_T; | |
317 | else | |
318 | env->sr &= ~SR_T; | |
6f06939b | 319 | if (temp < arg) |
fdf9b3e8 | 320 | env->sr |= SR_T; |
6f06939b | 321 | return arg; |
fdf9b3e8 FB |
322 | } |
323 | ||
6f06939b | 324 | uint32_t helper_subc(uint32_t arg0, uint32_t arg1) |
fdf9b3e8 FB |
325 | { |
326 | uint32_t tmp0, tmp1; | |
327 | ||
6f06939b AJ |
328 | tmp1 = arg1 - arg0; |
329 | tmp0 = arg1; | |
330 | arg1 = tmp1 - (env->sr & SR_T); | |
fdf9b3e8 FB |
331 | if (tmp0 < tmp1) |
332 | env->sr |= SR_T; | |
333 | else | |
334 | env->sr &= ~SR_T; | |
6f06939b | 335 | if (tmp1 < arg1) |
fdf9b3e8 | 336 | env->sr |= SR_T; |
6f06939b | 337 | return arg1; |
fdf9b3e8 FB |
338 | } |
339 | ||
6f06939b | 340 | uint32_t helper_subv(uint32_t arg0, uint32_t arg1) |
fdf9b3e8 FB |
341 | { |
342 | int32_t dest, src, ans; | |
343 | ||
6f06939b | 344 | if ((int32_t) arg1 >= 0) |
fdf9b3e8 FB |
345 | dest = 0; |
346 | else | |
347 | dest = 1; | |
6f06939b | 348 | if ((int32_t) arg0 >= 0) |
fdf9b3e8 FB |
349 | src = 0; |
350 | else | |
351 | src = 1; | |
352 | src += dest; | |
6f06939b AJ |
353 | arg1 -= arg0; |
354 | if ((int32_t) arg1 >= 0) | |
fdf9b3e8 FB |
355 | ans = 0; |
356 | else | |
357 | ans = 1; | |
358 | ans += dest; | |
359 | if (src == 1) { | |
360 | if (ans == 1) | |
361 | env->sr |= SR_T; | |
362 | else | |
363 | env->sr &= ~SR_T; | |
364 | } else | |
365 | env->sr &= ~SR_T; | |
6f06939b | 366 | return arg1; |
fdf9b3e8 FB |
367 | } |
368 | ||
cc4ba6a9 AJ |
369 | static inline void set_t(void) |
370 | { | |
371 | env->sr |= SR_T; | |
372 | } | |
373 | ||
374 | static inline void clr_t(void) | |
375 | { | |
376 | env->sr &= ~SR_T; | |
377 | } | |
378 | ||
390af821 AJ |
379 | void helper_ld_fpscr(uint32_t val) |
380 | { | |
381 | env->fpscr = val & 0x003fffff; | |
382 | if (val & 0x01) | |
383 | set_float_rounding_mode(float_round_to_zero, &env->fp_status); | |
384 | else | |
385 | set_float_rounding_mode(float_round_nearest_even, &env->fp_status); | |
386 | } | |
cc4ba6a9 AJ |
387 | |
388 | uint32_t helper_fabs_FT(uint32_t t0) | |
389 | { | |
390 | float32 ret = float32_abs(*(float32*)&t0); | |
391 | return *(uint32_t*)(&ret); | |
392 | } | |
393 | ||
394 | uint64_t helper_fabs_DT(uint64_t t0) | |
395 | { | |
396 | float64 ret = float64_abs(*(float64*)&t0); | |
397 | return *(uint64_t*)(&ret); | |
398 | } | |
399 | ||
400 | uint32_t helper_fadd_FT(uint32_t t0, uint32_t t1) | |
401 | { | |
402 | float32 ret = float32_add(*(float32*)&t0, *(float32*)&t1, &env->fp_status); | |
403 | return *(uint32_t*)(&ret); | |
404 | } | |
405 | ||
406 | uint64_t helper_fadd_DT(uint64_t t0, uint64_t t1) | |
407 | { | |
408 | float64 ret = float64_add(*(float64*)&t0, *(float64*)&t1, &env->fp_status); | |
409 | return *(uint64_t*)(&ret); | |
410 | } | |
411 | ||
412 | void helper_fcmp_eq_FT(uint32_t t0, uint32_t t1) | |
413 | { | |
414 | if (float32_compare(*(float32*)&t0, *(float32*)&t1, &env->fp_status) == 0) | |
415 | set_t(); | |
416 | else | |
417 | clr_t(); | |
418 | } | |
419 | ||
420 | void helper_fcmp_eq_DT(uint64_t t0, uint64_t t1) | |
421 | { | |
422 | if (float64_compare(*(float64*)&t0, *(float64*)&t1, &env->fp_status) == 0) | |
423 | set_t(); | |
424 | else | |
425 | clr_t(); | |
426 | } | |
427 | ||
428 | void helper_fcmp_gt_FT(uint32_t t0, uint32_t t1) | |
429 | { | |
430 | if (float32_compare(*(float32*)&t0, *(float32*)&t1, &env->fp_status) == 1) | |
431 | set_t(); | |
432 | else | |
433 | clr_t(); | |
434 | } | |
435 | ||
436 | void helper_fcmp_gt_DT(uint64_t t0, uint64_t t1) | |
437 | { | |
438 | if (float64_compare(*(float64*)&t0, *(float64*)&t1, &env->fp_status) == 1) | |
439 | set_t(); | |
440 | else | |
441 | clr_t(); | |
442 | } | |
443 | ||
444 | uint64_t helper_fcnvsd_FT_DT(uint32_t t0) | |
445 | { | |
446 | float64 ret = float32_to_float64(*(float32*)&t0, &env->fp_status); | |
447 | return *(uint64_t*)(&ret); | |
448 | } | |
449 | ||
450 | uint32_t helper_fcnvds_DT_FT(uint64_t t0) | |
451 | { | |
452 | float32 ret = float64_to_float32(*(float64*)&t0, &env->fp_status); | |
453 | return *(uint32_t*)(&ret); | |
454 | } | |
455 | ||
456 | uint32_t helper_fdiv_FT(uint32_t t0, uint32_t t1) | |
457 | { | |
458 | float32 ret = float32_div(*(float32*)&t0, *(float32*)&t1, &env->fp_status); | |
459 | return *(uint32_t*)(&ret); | |
460 | } | |
461 | ||
462 | uint64_t helper_fdiv_DT(uint64_t t0, uint64_t t1) | |
463 | { | |
464 | float64 ret = float64_div(*(float64*)&t0, *(float64*)&t1, &env->fp_status); | |
465 | return *(uint64_t*)(&ret); | |
466 | } | |
467 | ||
468 | uint32_t helper_float_FT(uint32_t t0) | |
469 | { | |
470 | float32 ret = int32_to_float32(t0, &env->fp_status); | |
471 | return *(uint32_t*)(&ret); | |
472 | } | |
473 | ||
474 | uint64_t helper_float_DT(uint32_t t0) | |
475 | { | |
476 | float64 ret = int32_to_float64(t0, &env->fp_status); | |
477 | return *(uint64_t*)(&ret); | |
478 | } | |
479 | ||
480 | uint32_t helper_fmul_FT(uint32_t t0, uint32_t t1) | |
481 | { | |
482 | float32 ret = float32_mul(*(float32*)&t0, *(float32*)&t1, &env->fp_status); | |
483 | return *(uint32_t*)(&ret); | |
484 | } | |
485 | ||
486 | uint64_t helper_fmul_DT(uint64_t t0, uint64_t t1) | |
487 | { | |
488 | float64 ret = float64_mul(*(float64*)&t0, *(float64*)&t1, &env->fp_status); | |
489 | return *(uint64_t*)(&ret); | |
490 | } | |
491 | ||
492 | uint32_t helper_fsqrt_FT(uint32_t t0) | |
493 | { | |
494 | float32 ret = float32_sqrt(*(float32*)&t0, &env->fp_status); | |
495 | return *(uint32_t*)(&ret); | |
496 | } | |
497 | ||
498 | uint64_t helper_fsqrt_DT(uint64_t t0) | |
499 | { | |
500 | float64 ret = float64_sqrt(*(float64*)&t0, &env->fp_status); | |
501 | return *(uint64_t*)(&ret); | |
502 | } | |
503 | ||
504 | uint32_t helper_fsub_FT(uint32_t t0, uint32_t t1) | |
505 | { | |
506 | float32 ret = float32_sub(*(float32*)&t0, *(float32*)&t1, &env->fp_status); | |
507 | return *(uint32_t*)(&ret); | |
508 | } | |
509 | ||
510 | uint64_t helper_fsub_DT(uint64_t t0, uint64_t t1) | |
511 | { | |
512 | float64 ret = float64_sub(*(float64*)&t0, *(float64*)&t1, &env->fp_status); | |
513 | return *(uint64_t*)(&ret); | |
514 | } | |
515 | ||
516 | uint32_t helper_ftrc_FT(uint32_t t0) | |
517 | { | |
518 | return float32_to_int32_round_to_zero(*(float32*)&t0, &env->fp_status); | |
519 | } | |
520 | ||
521 | uint32_t helper_ftrc_DT(uint64_t t0) | |
522 | { | |
523 | return float64_to_int32_round_to_zero(*(float64*)&t0, &env->fp_status); | |
524 | } |