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4f8d4a38 DD |
1 | /* rx.c --- opcode semantics for stand-alone RX simulator. |
2 | ||
dc3cf14f | 3 | Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc. |
4f8d4a38 DD |
4 | Contributed by Red Hat, Inc. |
5 | ||
6 | This file is part of the GNU simulators. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
20 | ||
93378652 | 21 | #include "config.h" |
4f8d4a38 DD |
22 | #include <stdio.h> |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <signal.h> | |
26 | ||
27 | #include "opcode/rx.h" | |
28 | #include "cpu.h" | |
29 | #include "mem.h" | |
30 | #include "syscalls.h" | |
31 | #include "fpu.h" | |
32 | #include "err.h" | |
93378652 DD |
33 | #include "misc.h" |
34 | ||
35 | #ifdef CYCLE_STATS | |
36 | static const char * id_names[] = { | |
37 | "RXO_unknown", | |
38 | "RXO_mov", /* d = s (signed) */ | |
39 | "RXO_movbi", /* d = [s,s2] (signed) */ | |
40 | "RXO_movbir", /* [s,s2] = d (signed) */ | |
41 | "RXO_pushm", /* s..s2 */ | |
42 | "RXO_popm", /* s..s2 */ | |
43 | "RXO_xchg", /* s <-> d */ | |
44 | "RXO_stcc", /* d = s if cond(s2) */ | |
45 | "RXO_rtsd", /* rtsd, 1=imm, 2-0 = reg if reg type */ | |
46 | ||
47 | /* These are all either d OP= s or, if s2 is set, d = s OP s2. Note | |
48 | that d may be "None". */ | |
49 | "RXO_and", | |
50 | "RXO_or", | |
51 | "RXO_xor", | |
52 | "RXO_add", | |
53 | "RXO_sub", | |
54 | "RXO_mul", | |
55 | "RXO_div", | |
56 | "RXO_divu", | |
57 | "RXO_shll", | |
58 | "RXO_shar", | |
59 | "RXO_shlr", | |
60 | ||
61 | "RXO_adc", /* d = d + s + carry */ | |
62 | "RXO_sbb", /* d = d - s - ~carry */ | |
63 | "RXO_abs", /* d = |s| */ | |
64 | "RXO_max", /* d = max(d,s) */ | |
65 | "RXO_min", /* d = min(d,s) */ | |
66 | "RXO_emul", /* d:64 = d:32 * s */ | |
67 | "RXO_emulu", /* d:64 = d:32 * s (unsigned) */ | |
93378652 DD |
68 | |
69 | "RXO_rolc", /* d <<= 1 through carry */ | |
70 | "RXO_rorc", /* d >>= 1 through carry*/ | |
71 | "RXO_rotl", /* d <<= #s without carry */ | |
72 | "RXO_rotr", /* d >>= #s without carry*/ | |
73 | "RXO_revw", /* d = revw(s) */ | |
74 | "RXO_revl", /* d = revl(s) */ | |
75 | "RXO_branch", /* pc = d if cond(s) */ | |
76 | "RXO_branchrel",/* pc += d if cond(s) */ | |
77 | "RXO_jsr", /* pc = d */ | |
78 | "RXO_jsrrel", /* pc += d */ | |
79 | "RXO_rts", | |
80 | "RXO_nop", | |
81 | "RXO_nop2", | |
82 | "RXO_nop3", | |
83 | ||
84 | "RXO_scmpu", | |
85 | "RXO_smovu", | |
86 | "RXO_smovb", | |
87 | "RXO_suntil", | |
88 | "RXO_swhile", | |
89 | "RXO_smovf", | |
90 | "RXO_sstr", | |
91 | ||
92 | "RXO_rmpa", | |
93 | "RXO_mulhi", | |
94 | "RXO_mullo", | |
95 | "RXO_machi", | |
96 | "RXO_maclo", | |
97 | "RXO_mvtachi", | |
98 | "RXO_mvtaclo", | |
99 | "RXO_mvfachi", | |
100 | "RXO_mvfacmi", | |
101 | "RXO_mvfaclo", | |
102 | "RXO_racw", | |
103 | ||
104 | "RXO_sat", /* sat(d) */ | |
105 | "RXO_satr", | |
106 | ||
107 | "RXO_fadd", /* d op= s */ | |
108 | "RXO_fcmp", | |
109 | "RXO_fsub", | |
110 | "RXO_ftoi", | |
111 | "RXO_fmul", | |
112 | "RXO_fdiv", | |
113 | "RXO_round", | |
114 | "RXO_itof", | |
115 | ||
116 | "RXO_bset", /* d |= (1<<s) */ | |
117 | "RXO_bclr", /* d &= ~(1<<s) */ | |
118 | "RXO_btst", /* s & (1<<s2) */ | |
119 | "RXO_bnot", /* d ^= (1<<s) */ | |
120 | "RXO_bmcc", /* d<s> = cond(s2) */ | |
121 | ||
122 | "RXO_clrpsw", /* flag index in d */ | |
123 | "RXO_setpsw", /* flag index in d */ | |
124 | "RXO_mvtipl", /* new IPL in s */ | |
125 | ||
126 | "RXO_rtfi", | |
127 | "RXO_rte", | |
128 | "RXO_rtd", /* undocumented */ | |
129 | "RXO_brk", | |
130 | "RXO_dbt", /* undocumented */ | |
131 | "RXO_int", /* vector id in s */ | |
132 | "RXO_stop", | |
133 | "RXO_wait", | |
134 | ||
135 | "RXO_sccnd", /* d = cond(s) ? 1 : 0 */ | |
136 | }; | |
137 | ||
138 | static const char * optype_names[] = { | |
139 | " ", | |
140 | "#Imm", /* #addend */ | |
141 | " Rn ", /* Rn */ | |
142 | "[Rn]", /* [Rn + addend] */ | |
143 | "Ps++", /* [Rn+] */ | |
144 | "--Pr", /* [-Rn] */ | |
145 | " cc ", /* eq, gtu, etc */ | |
f9c7014e DD |
146 | "Flag", /* [UIOSZC] */ |
147 | "RbRi" /* [Rb + scale * Ri] */ | |
93378652 DD |
148 | }; |
149 | ||
150 | #define N_RXO (sizeof(id_names)/sizeof(id_names[0])) | |
151 | #define N_RXT (sizeof(optype_names)/sizeof(optype_names[0])) | |
152 | #define N_MAP 30 | |
153 | ||
154 | static unsigned long long benchmark_start_cycle; | |
155 | static unsigned long long benchmark_end_cycle; | |
156 | ||
157 | static int op_cache[N_RXT][N_RXT][N_RXT]; | |
158 | static int op_cache_rev[N_MAP]; | |
159 | static int op_cache_idx = 0; | |
160 | ||
161 | static int | |
162 | op_lookup (int a, int b, int c) | |
163 | { | |
164 | if (op_cache[a][b][c]) | |
165 | return op_cache[a][b][c]; | |
166 | op_cache_idx ++; | |
167 | if (op_cache_idx >= N_MAP) | |
168 | { | |
169 | printf("op_cache_idx exceeds %d\n", N_MAP); | |
170 | exit(1); | |
171 | } | |
172 | op_cache[a][b][c] = op_cache_idx; | |
173 | op_cache_rev[op_cache_idx] = (a<<8) | (b<<4) | c; | |
174 | return op_cache_idx; | |
175 | } | |
176 | ||
177 | static char * | |
178 | op_cache_string (int map) | |
179 | { | |
180 | static int ci; | |
181 | static char cb[5][20]; | |
182 | int a, b, c; | |
183 | ||
184 | map = op_cache_rev[map]; | |
185 | a = (map >> 8) & 15; | |
186 | b = (map >> 4) & 15; | |
187 | c = (map >> 0) & 15; | |
188 | ci = (ci + 1) % 5; | |
189 | sprintf(cb[ci], "%s %s %s", optype_names[a], optype_names[b], optype_names[c]); | |
190 | return cb[ci]; | |
191 | } | |
192 | ||
193 | static unsigned long long cycles_per_id[N_RXO][N_MAP]; | |
194 | static unsigned long long times_per_id[N_RXO][N_MAP]; | |
195 | static unsigned long long memory_stalls; | |
196 | static unsigned long long register_stalls; | |
197 | static unsigned long long branch_stalls; | |
198 | static unsigned long long branch_alignment_stalls; | |
199 | static unsigned long long fast_returns; | |
200 | ||
201 | static unsigned long times_per_pair[N_RXO][N_MAP][N_RXO][N_MAP]; | |
202 | static int prev_opcode_id = RXO_unknown; | |
203 | static int po0; | |
204 | ||
205 | #define STATS(x) x | |
206 | ||
207 | #else | |
208 | #define STATS(x) | |
209 | #endif /* CYCLE_STATS */ | |
210 | ||
211 | ||
212 | #ifdef CYCLE_ACCURATE | |
213 | ||
214 | static int new_rt = -1; | |
215 | ||
216 | /* Number of cycles to add if an insn spans an 8-byte boundary. */ | |
217 | static int branch_alignment_penalty = 0; | |
4f8d4a38 | 218 | |
93378652 DD |
219 | #endif |
220 | ||
221 | static int running_benchmark = 1; | |
222 | ||
223 | #define tprintf if (trace && running_benchmark) printf | |
4f8d4a38 DD |
224 | |
225 | jmp_buf decode_jmp_buf; | |
226 | unsigned int rx_cycles = 0; | |
227 | ||
93378652 DD |
228 | #ifdef CYCLE_ACCURATE |
229 | /* If nonzero, memory was read at some point and cycle latency might | |
230 | take effect. */ | |
231 | static int memory_source = 0; | |
232 | /* If nonzero, memory was written and extra cycles might be | |
233 | needed. */ | |
234 | static int memory_dest = 0; | |
235 | ||
236 | static void | |
237 | cycles (int throughput) | |
238 | { | |
239 | tprintf("%d cycles\n", throughput); | |
240 | regs.cycle_count += throughput; | |
241 | } | |
242 | ||
243 | /* Number of execution (E) cycles the op uses. For memory sources, we | |
244 | include the load micro-op stall as two extra E cycles. */ | |
245 | #define E(c) cycles (memory_source ? c + 2 : c) | |
246 | #define E1 cycles (1) | |
247 | #define E2 cycles (2) | |
248 | #define EBIT cycles (memory_source ? 2 : 1) | |
249 | ||
250 | /* Check to see if a read latency must be applied for a given register. */ | |
251 | #define RL(r) \ | |
252 | if (regs.rt == r ) \ | |
253 | { \ | |
254 | tprintf("register %d load stall\n", r); \ | |
255 | regs.cycle_count ++; \ | |
256 | STATS(register_stalls ++); \ | |
257 | regs.rt = -1; \ | |
258 | } | |
259 | ||
260 | #define RLD(r) \ | |
261 | if (memory_source) \ | |
262 | { \ | |
263 | tprintf ("Rt now %d\n", r); \ | |
264 | new_rt = r; \ | |
265 | } | |
266 | ||
267 | #else /* !CYCLE_ACCURATE */ | |
268 | ||
269 | #define cycles(t) | |
270 | #define E(c) | |
271 | #define E1 | |
272 | #define E2 | |
273 | #define EBIT | |
274 | #define RL(r) | |
275 | #define RLD(r) | |
276 | ||
277 | #endif /* else CYCLE_ACCURATE */ | |
278 | ||
4f8d4a38 DD |
279 | static int size2bytes[] = { |
280 | 4, 1, 1, 1, 2, 2, 2, 3, 4 | |
281 | }; | |
282 | ||
283 | typedef struct { | |
284 | unsigned long dpc; | |
285 | } RX_Data; | |
286 | ||
287 | #define rx_abort() _rx_abort(__FILE__, __LINE__) | |
288 | static void | |
289 | _rx_abort (const char *file, int line) | |
290 | { | |
291 | if (strrchr (file, '/')) | |
292 | file = strrchr (file, '/') + 1; | |
293 | fprintf(stderr, "abort at %s:%d\n", file, line); | |
294 | abort(); | |
295 | } | |
296 | ||
93378652 | 297 | static unsigned char *get_byte_base; |
f9c7014e | 298 | static RX_Opcode_Decoded **decode_cache_base; |
93378652 DD |
299 | static SI get_byte_page; |
300 | ||
f9c7014e DD |
301 | static inline void |
302 | maybe_get_mem_page (SI tpc) | |
303 | { | |
304 | if (((tpc ^ get_byte_page) & NONPAGE_MASK) || enable_counting) | |
305 | { | |
306 | get_byte_page = tpc & NONPAGE_MASK; | |
307 | get_byte_base = rx_mem_ptr (get_byte_page, MPA_READING) - get_byte_page; | |
308 | decode_cache_base = rx_mem_decode_cache (get_byte_page) - get_byte_page; | |
309 | } | |
310 | } | |
311 | ||
93378652 | 312 | /* This gets called a *lot* so optimize it. */ |
4f8d4a38 DD |
313 | static int |
314 | rx_get_byte (void *vdata) | |
315 | { | |
4f8d4a38 | 316 | RX_Data *rx_data = (RX_Data *)vdata; |
93378652 DD |
317 | SI tpc = rx_data->dpc; |
318 | ||
319 | /* See load.c for an explanation of this. */ | |
4f8d4a38 | 320 | if (rx_big_endian) |
93378652 DD |
321 | tpc ^= 3; |
322 | ||
f9c7014e | 323 | maybe_get_mem_page (tpc); |
93378652 | 324 | |
4f8d4a38 | 325 | rx_data->dpc ++; |
93378652 | 326 | return get_byte_base [tpc]; |
4f8d4a38 DD |
327 | } |
328 | ||
329 | static int | |
f9c7014e | 330 | get_op (const RX_Opcode_Decoded *rd, int i) |
4f8d4a38 | 331 | { |
f9c7014e | 332 | const RX_Opcode_Operand *o = rd->op + i; |
4f8d4a38 DD |
333 | int addr, rv = 0; |
334 | ||
335 | switch (o->type) | |
336 | { | |
337 | case RX_Operand_None: | |
338 | rx_abort (); | |
339 | ||
340 | case RX_Operand_Immediate: /* #addend */ | |
341 | return o->addend; | |
342 | ||
343 | case RX_Operand_Register: /* Rn */ | |
93378652 | 344 | RL (o->reg); |
4f8d4a38 DD |
345 | rv = get_reg (o->reg); |
346 | break; | |
347 | ||
348 | case RX_Operand_Predec: /* [-Rn] */ | |
349 | put_reg (o->reg, get_reg (o->reg) - size2bytes[o->size]); | |
350 | /* fall through */ | |
351 | case RX_Operand_Postinc: /* [Rn+] */ | |
352 | case RX_Operand_Indirect: /* [Rn + addend] */ | |
f9c7014e | 353 | case RX_Operand_TwoReg: /* [Rn + scale * R2] */ |
93378652 DD |
354 | #ifdef CYCLE_ACCURATE |
355 | RL (o->reg); | |
f9c7014e DD |
356 | if (o->type == RX_Operand_TwoReg) |
357 | RL (rd->op[2].reg); | |
93378652 DD |
358 | regs.rt = -1; |
359 | if (regs.m2m == M2M_BOTH) | |
360 | { | |
361 | tprintf("src memory stall\n"); | |
362 | #ifdef CYCLE_STATS | |
363 | memory_stalls ++; | |
364 | #endif | |
365 | regs.cycle_count ++; | |
366 | regs.m2m = 0; | |
367 | } | |
368 | ||
369 | memory_source = 1; | |
370 | #endif | |
4f8d4a38 | 371 | |
f9c7014e DD |
372 | if (o->type == RX_Operand_TwoReg) |
373 | addr = get_reg (o->reg) * size2bytes[rd->size] + get_reg (rd->op[2].reg); | |
374 | else | |
375 | addr = get_reg (o->reg) + o->addend; | |
376 | ||
4f8d4a38 DD |
377 | switch (o->size) |
378 | { | |
379 | case RX_AnySize: | |
380 | rx_abort (); | |
381 | ||
382 | case RX_Byte: /* undefined extension */ | |
383 | case RX_UByte: | |
384 | case RX_SByte: | |
385 | rv = mem_get_qi (addr); | |
386 | break; | |
387 | ||
388 | case RX_Word: /* undefined extension */ | |
389 | case RX_UWord: | |
390 | case RX_SWord: | |
391 | rv = mem_get_hi (addr); | |
392 | break; | |
393 | ||
394 | case RX_3Byte: | |
395 | rv = mem_get_psi (addr); | |
396 | break; | |
397 | ||
398 | case RX_Long: | |
399 | rv = mem_get_si (addr); | |
400 | break; | |
401 | } | |
402 | ||
403 | if (o->type == RX_Operand_Postinc) | |
404 | put_reg (o->reg, get_reg (o->reg) + size2bytes[o->size]); | |
405 | ||
406 | break; | |
407 | ||
408 | case RX_Operand_Condition: /* eq, gtu, etc */ | |
409 | return condition_true (o->reg); | |
410 | ||
411 | case RX_Operand_Flag: /* [UIOSZC] */ | |
412 | return (regs.r_psw & (1 << o->reg)) ? 1 : 0; | |
413 | } | |
414 | ||
415 | /* if we've gotten here, we need to clip/extend the value according | |
416 | to the size. */ | |
417 | switch (o->size) | |
418 | { | |
419 | case RX_AnySize: | |
420 | rx_abort (); | |
421 | ||
422 | case RX_Byte: /* undefined extension */ | |
423 | rv |= 0xdeadbe00; /* keep them honest */ | |
424 | break; | |
425 | ||
426 | case RX_UByte: | |
427 | rv &= 0xff; | |
428 | break; | |
429 | ||
430 | case RX_SByte: | |
431 | rv = sign_ext (rv, 8); | |
432 | break; | |
433 | ||
434 | case RX_Word: /* undefined extension */ | |
435 | rv |= 0xdead0000; /* keep them honest */ | |
436 | break; | |
437 | ||
438 | case RX_UWord: | |
439 | rv &= 0xffff; | |
440 | break; | |
441 | ||
442 | case RX_SWord: | |
443 | rv = sign_ext (rv, 16); | |
444 | break; | |
445 | ||
446 | case RX_3Byte: | |
447 | rv &= 0xffffff; | |
448 | break; | |
449 | ||
450 | case RX_Long: | |
451 | break; | |
452 | } | |
453 | return rv; | |
454 | } | |
455 | ||
456 | static void | |
f9c7014e | 457 | put_op (const RX_Opcode_Decoded *rd, int i, int v) |
4f8d4a38 | 458 | { |
f9c7014e | 459 | const RX_Opcode_Operand *o = rd->op + i; |
4f8d4a38 DD |
460 | int addr; |
461 | ||
462 | switch (o->size) | |
463 | { | |
464 | case RX_AnySize: | |
465 | if (o->type != RX_Operand_Register) | |
466 | rx_abort (); | |
467 | break; | |
468 | ||
469 | case RX_Byte: /* undefined extension */ | |
470 | v |= 0xdeadbe00; /* keep them honest */ | |
471 | break; | |
472 | ||
473 | case RX_UByte: | |
474 | v &= 0xff; | |
475 | break; | |
476 | ||
477 | case RX_SByte: | |
478 | v = sign_ext (v, 8); | |
479 | break; | |
480 | ||
481 | case RX_Word: /* undefined extension */ | |
482 | v |= 0xdead0000; /* keep them honest */ | |
483 | break; | |
484 | ||
485 | case RX_UWord: | |
486 | v &= 0xffff; | |
487 | break; | |
488 | ||
489 | case RX_SWord: | |
490 | v = sign_ext (v, 16); | |
491 | break; | |
492 | ||
493 | case RX_3Byte: | |
494 | v &= 0xffffff; | |
495 | break; | |
496 | ||
497 | case RX_Long: | |
498 | break; | |
499 | } | |
500 | ||
501 | switch (o->type) | |
502 | { | |
503 | case RX_Operand_None: | |
504 | /* Opcodes like TST and CMP use this. */ | |
505 | break; | |
506 | ||
507 | case RX_Operand_Immediate: /* #addend */ | |
508 | case RX_Operand_Condition: /* eq, gtu, etc */ | |
509 | rx_abort (); | |
510 | ||
511 | case RX_Operand_Register: /* Rn */ | |
512 | put_reg (o->reg, v); | |
93378652 | 513 | RLD (o->reg); |
4f8d4a38 DD |
514 | break; |
515 | ||
516 | case RX_Operand_Predec: /* [-Rn] */ | |
517 | put_reg (o->reg, get_reg (o->reg) - size2bytes[o->size]); | |
518 | /* fall through */ | |
519 | case RX_Operand_Postinc: /* [Rn+] */ | |
520 | case RX_Operand_Indirect: /* [Rn + addend] */ | |
f9c7014e | 521 | case RX_Operand_TwoReg: /* [Rn + scale * R2] */ |
4f8d4a38 | 522 | |
93378652 DD |
523 | #ifdef CYCLE_ACCURATE |
524 | if (regs.m2m == M2M_BOTH) | |
525 | { | |
526 | tprintf("dst memory stall\n"); | |
527 | regs.cycle_count ++; | |
528 | #ifdef CYCLE_STATS | |
529 | memory_stalls ++; | |
530 | #endif | |
531 | regs.m2m = 0; | |
532 | } | |
533 | memory_dest = 1; | |
534 | #endif | |
535 | ||
f9c7014e DD |
536 | if (o->type == RX_Operand_TwoReg) |
537 | addr = get_reg (o->reg) * size2bytes[rd->size] + get_reg (rd->op[2].reg); | |
538 | else | |
539 | addr = get_reg (o->reg) + o->addend; | |
540 | ||
4f8d4a38 DD |
541 | switch (o->size) |
542 | { | |
543 | case RX_AnySize: | |
544 | rx_abort (); | |
545 | ||
546 | case RX_Byte: /* undefined extension */ | |
547 | case RX_UByte: | |
548 | case RX_SByte: | |
549 | mem_put_qi (addr, v); | |
550 | break; | |
551 | ||
552 | case RX_Word: /* undefined extension */ | |
553 | case RX_UWord: | |
554 | case RX_SWord: | |
555 | mem_put_hi (addr, v); | |
556 | break; | |
557 | ||
558 | case RX_3Byte: | |
559 | mem_put_psi (addr, v); | |
560 | break; | |
561 | ||
562 | case RX_Long: | |
563 | mem_put_si (addr, v); | |
564 | break; | |
565 | } | |
566 | ||
567 | if (o->type == RX_Operand_Postinc) | |
568 | put_reg (o->reg, get_reg (o->reg) + size2bytes[o->size]); | |
569 | ||
570 | break; | |
571 | ||
572 | case RX_Operand_Flag: /* [UIOSZC] */ | |
573 | if (v) | |
574 | regs.r_psw |= (1 << o->reg); | |
575 | else | |
576 | regs.r_psw &= ~(1 << o->reg); | |
577 | break; | |
578 | } | |
579 | } | |
580 | ||
f9c7014e DD |
581 | #define PD(x) put_op (opcode, 0, x) |
582 | #define PS(x) put_op (opcode, 1, x) | |
583 | #define PS2(x) put_op (opcode, 2, x) | |
584 | #define GD() get_op (opcode, 0) | |
585 | #define GS() get_op (opcode, 1) | |
586 | #define GS2() get_op (opcode, 2) | |
587 | #define DSZ() size2bytes[opcode->op[0].size] | |
588 | #define SSZ() size2bytes[opcode->op[0].size] | |
589 | #define S2SZ() size2bytes[opcode->op[0].size] | |
4f8d4a38 DD |
590 | |
591 | /* "Universal" sources. */ | |
f9c7014e DD |
592 | #define US1() ((opcode->op[2].type == RX_Operand_None) ? GD() : GS()) |
593 | #define US2() ((opcode->op[2].type == RX_Operand_None) ? GS() : GS2()) | |
4f8d4a38 DD |
594 | |
595 | static void | |
596 | push(int val) | |
597 | { | |
598 | int rsp = get_reg (sp); | |
599 | rsp -= 4; | |
600 | put_reg (sp, rsp); | |
601 | mem_put_si (rsp, val); | |
602 | } | |
603 | ||
604 | /* Just like the above, but tag the memory as "pushed pc" so if anyone | |
605 | tries to write to it, it will cause an error. */ | |
606 | static void | |
607 | pushpc(int val) | |
608 | { | |
609 | int rsp = get_reg (sp); | |
610 | rsp -= 4; | |
611 | put_reg (sp, rsp); | |
612 | mem_put_si (rsp, val); | |
613 | mem_set_content_range (rsp, rsp+3, MC_PUSHED_PC); | |
614 | } | |
615 | ||
616 | static int | |
617 | pop() | |
618 | { | |
619 | int rv; | |
620 | int rsp = get_reg (sp); | |
621 | rv = mem_get_si (rsp); | |
622 | rsp += 4; | |
623 | put_reg (sp, rsp); | |
624 | return rv; | |
625 | } | |
626 | ||
627 | static int | |
628 | poppc() | |
629 | { | |
630 | int rv; | |
631 | int rsp = get_reg (sp); | |
632 | if (mem_get_content_type (rsp) != MC_PUSHED_PC) | |
633 | execution_error (SIM_ERR_CORRUPT_STACK, rsp); | |
634 | rv = mem_get_si (rsp); | |
635 | mem_set_content_range (rsp, rsp+3, MC_UNINIT); | |
636 | rsp += 4; | |
637 | put_reg (sp, rsp); | |
638 | return rv; | |
639 | } | |
640 | ||
641 | #define MATH_OP(vop,c) \ | |
642 | { \ | |
4f8d4a38 | 643 | umb = US2(); \ |
93378652 | 644 | uma = US1(); \ |
4f8d4a38 DD |
645 | ll = (unsigned long long) uma vop (unsigned long long) umb vop c; \ |
646 | tprintf ("0x%x " #vop " 0x%x " #vop " 0x%x = 0x%llx\n", uma, umb, c, ll); \ | |
647 | ma = sign_ext (uma, DSZ() * 8); \ | |
648 | mb = sign_ext (umb, DSZ() * 8); \ | |
649 | sll = (long long) ma vop (long long) mb vop c; \ | |
650 | tprintf ("%d " #vop " %d " #vop " %d = %lld\n", ma, mb, c, sll); \ | |
651 | set_oszc (sll, DSZ(), (long long) ll > ((1 vop 1) ? (long long) b2mask[DSZ()] : (long long) -1)); \ | |
652 | PD (sll); \ | |
93378652 | 653 | E (1); \ |
4f8d4a38 DD |
654 | } |
655 | ||
656 | #define LOGIC_OP(vop) \ | |
657 | { \ | |
4f8d4a38 | 658 | mb = US2(); \ |
93378652 | 659 | ma = US1(); \ |
4f8d4a38 DD |
660 | v = ma vop mb; \ |
661 | tprintf("0x%x " #vop " 0x%x = 0x%x\n", ma, mb, v); \ | |
662 | set_sz (v, DSZ()); \ | |
663 | PD(v); \ | |
93378652 | 664 | E (1); \ |
4f8d4a38 DD |
665 | } |
666 | ||
667 | #define SHIFT_OP(val, type, count, OP, carry_mask) \ | |
668 | { \ | |
669 | int i, c=0; \ | |
4f8d4a38 | 670 | count = US2(); \ |
93378652 | 671 | val = (type)US1(); \ |
4f8d4a38 DD |
672 | tprintf("%lld " #OP " %d\n", val, count); \ |
673 | for (i = 0; i < count; i ++) \ | |
674 | { \ | |
675 | c = val & carry_mask; \ | |
676 | val OP 1; \ | |
677 | } \ | |
678 | if (count) \ | |
679 | set_oszc (val, 4, c); \ | |
680 | PD (val); \ | |
681 | } | |
682 | ||
683 | typedef union { | |
684 | int i; | |
685 | float f; | |
686 | } FloatInt; | |
687 | ||
688 | static inline int | |
689 | float2int (float f) | |
690 | { | |
691 | FloatInt fi; | |
692 | fi.f = f; | |
693 | return fi.i; | |
694 | } | |
695 | ||
696 | static inline float | |
697 | int2float (int i) | |
698 | { | |
699 | FloatInt fi; | |
700 | fi.i = i; | |
701 | return fi.f; | |
702 | } | |
703 | ||
704 | static int | |
705 | fop_fadd (fp_t s1, fp_t s2, fp_t *d) | |
706 | { | |
707 | *d = rxfp_add (s1, s2); | |
708 | return 1; | |
709 | } | |
710 | ||
711 | static int | |
712 | fop_fmul (fp_t s1, fp_t s2, fp_t *d) | |
713 | { | |
714 | *d = rxfp_mul (s1, s2); | |
715 | return 1; | |
716 | } | |
717 | ||
718 | static int | |
719 | fop_fdiv (fp_t s1, fp_t s2, fp_t *d) | |
720 | { | |
721 | *d = rxfp_div (s1, s2); | |
722 | return 1; | |
723 | } | |
724 | ||
725 | static int | |
726 | fop_fsub (fp_t s1, fp_t s2, fp_t *d) | |
727 | { | |
728 | *d = rxfp_sub (s1, s2); | |
729 | return 1; | |
730 | } | |
731 | ||
732 | #define FPPENDING() (regs.r_fpsw & (FPSWBITS_CE | (FPSWBITS_FMASK & (regs.r_fpsw << FPSW_EFSH)))) | |
733 | #define FPCLEAR() regs.r_fpsw &= FPSWBITS_CLEAR | |
734 | #define FPCHECK() \ | |
735 | if (FPPENDING()) \ | |
736 | return do_fp_exception (opcode_pc) | |
737 | ||
738 | #define FLOAT_OP(func) \ | |
739 | { \ | |
740 | int do_store; \ | |
741 | fp_t fa, fb, fc; \ | |
742 | FPCLEAR(); \ | |
4f8d4a38 | 743 | fb = GS (); \ |
93378652 | 744 | fa = GD (); \ |
4f8d4a38 DD |
745 | do_store = fop_##func (fa, fb, &fc); \ |
746 | tprintf("%g " #func " %g = %g %08x\n", int2float(fa), int2float(fb), int2float(fc), fc); \ | |
747 | FPCHECK(); \ | |
748 | if (do_store) \ | |
749 | PD (fc); \ | |
750 | mb = 0; \ | |
751 | if ((fc & 0x80000000UL) != 0) \ | |
752 | mb |= FLAGBIT_S; \ | |
753 | if ((fc & 0x7fffffffUL) == 0) \ | |
754 | mb |= FLAGBIT_Z; \ | |
755 | set_flags (FLAGBIT_S | FLAGBIT_Z, mb); \ | |
756 | } | |
757 | ||
758 | #define carry (FLAG_C ? 1 : 0) | |
759 | ||
760 | static struct { | |
761 | unsigned long vaddr; | |
762 | const char *str; | |
763 | int signal; | |
764 | } exception_info[] = { | |
765 | { 0xFFFFFFD0UL, "priviledged opcode", SIGILL }, | |
766 | { 0xFFFFFFD4UL, "access violation", SIGSEGV }, | |
767 | { 0xFFFFFFDCUL, "undefined opcode", SIGILL }, | |
768 | { 0xFFFFFFE4UL, "floating point", SIGFPE } | |
769 | }; | |
770 | #define EX_PRIVILEDGED 0 | |
771 | #define EX_ACCESS 1 | |
772 | #define EX_UNDEFINED 2 | |
773 | #define EX_FLOATING 3 | |
774 | #define EXCEPTION(n) \ | |
775 | return generate_exception (n, opcode_pc) | |
776 | ||
777 | #define PRIVILEDGED() \ | |
778 | if (FLAG_PM) \ | |
779 | EXCEPTION (EX_PRIVILEDGED) | |
780 | ||
781 | static int | |
782 | generate_exception (unsigned long type, SI opcode_pc) | |
783 | { | |
784 | SI old_psw, old_pc, new_pc; | |
785 | ||
786 | new_pc = mem_get_si (exception_info[type].vaddr); | |
787 | /* 0x00020000 is the value used to initialise the known | |
788 | exception vectors (see rx.ld), but it is a reserved | |
789 | area of memory so do not try to access it, and if the | |
790 | value has not been changed by the program then the | |
791 | vector has not been installed. */ | |
792 | if (new_pc == 0 || new_pc == 0x00020000) | |
793 | { | |
794 | if (rx_in_gdb) | |
795 | return RX_MAKE_STOPPED (exception_info[type].signal); | |
796 | ||
797 | fprintf(stderr, "Unhandled %s exception at pc = %#lx\n", | |
798 | exception_info[type].str, (unsigned long) opcode_pc); | |
799 | if (type == EX_FLOATING) | |
800 | { | |
801 | int mask = FPPENDING (); | |
802 | fprintf (stderr, "Pending FP exceptions:"); | |
803 | if (mask & FPSWBITS_FV) | |
804 | fprintf(stderr, " Invalid"); | |
805 | if (mask & FPSWBITS_FO) | |
806 | fprintf(stderr, " Overflow"); | |
807 | if (mask & FPSWBITS_FZ) | |
808 | fprintf(stderr, " Division-by-zero"); | |
809 | if (mask & FPSWBITS_FU) | |
810 | fprintf(stderr, " Underflow"); | |
811 | if (mask & FPSWBITS_FX) | |
812 | fprintf(stderr, " Inexact"); | |
813 | if (mask & FPSWBITS_CE) | |
814 | fprintf(stderr, " Unimplemented"); | |
815 | fprintf(stderr, "\n"); | |
816 | } | |
817 | return RX_MAKE_EXITED (1); | |
818 | } | |
819 | ||
820 | tprintf ("Triggering %s exception\n", exception_info[type].str); | |
821 | ||
822 | old_psw = regs.r_psw; | |
823 | regs.r_psw &= ~ (FLAGBIT_I | FLAGBIT_U | FLAGBIT_PM); | |
824 | old_pc = opcode_pc; | |
825 | regs.r_pc = new_pc; | |
826 | pushpc (old_psw); | |
827 | pushpc (old_pc); | |
828 | return RX_MAKE_STEPPED (); | |
829 | } | |
830 | ||
831 | void | |
832 | generate_access_exception (void) | |
833 | { | |
834 | int rv; | |
835 | ||
836 | rv = generate_exception (EX_ACCESS, regs.r_pc); | |
837 | if (RX_EXITED (rv)) | |
838 | longjmp (decode_jmp_buf, rv); | |
839 | } | |
840 | ||
841 | static int | |
842 | do_fp_exception (unsigned long opcode_pc) | |
843 | { | |
844 | while (FPPENDING()) | |
845 | EXCEPTION (EX_FLOATING); | |
846 | return RX_MAKE_STEPPED (); | |
847 | } | |
848 | ||
93378652 | 849 | static int |
f9c7014e | 850 | op_is_memory (const RX_Opcode_Decoded *rd, int i) |
93378652 DD |
851 | { |
852 | switch (rd->op[i].type) | |
853 | { | |
854 | case RX_Operand_Predec: | |
855 | case RX_Operand_Postinc: | |
856 | case RX_Operand_Indirect: | |
857 | return 1; | |
858 | default: | |
859 | return 0; | |
860 | } | |
861 | } | |
f9c7014e DD |
862 | #define OM(i) op_is_memory (opcode, i) |
863 | ||
864 | #define DO_RETURN(x) { longjmp (decode_jmp_buf, x); } | |
93378652 | 865 | |
4f8d4a38 DD |
866 | int |
867 | decode_opcode () | |
868 | { | |
869 | unsigned int uma=0, umb=0; | |
870 | int ma=0, mb=0; | |
871 | int opcode_size, v; | |
872 | unsigned long long ll; | |
873 | long long sll; | |
874 | unsigned long opcode_pc; | |
875 | RX_Data rx_data; | |
f9c7014e | 876 | const RX_Opcode_Decoded *opcode; |
93378652 DD |
877 | #ifdef CYCLE_STATS |
878 | unsigned long long prev_cycle_count; | |
879 | #endif | |
880 | #ifdef CYCLE_ACCURATE | |
881 | int tx; | |
882 | #endif | |
4f8d4a38 | 883 | |
93378652 DD |
884 | #ifdef CYCLE_STATS |
885 | prev_cycle_count = regs.cycle_count; | |
886 | #endif | |
887 | ||
888 | #ifdef CYCLE_ACCURATE | |
889 | memory_source = 0; | |
890 | memory_dest = 0; | |
891 | #endif | |
892 | ||
4f8d4a38 DD |
893 | rx_cycles ++; |
894 | ||
f9c7014e DD |
895 | maybe_get_mem_page (regs.r_pc); |
896 | ||
897 | opcode_pc = regs.r_pc; | |
898 | ||
899 | /* Note that we don't word-swap this point, there's no point. */ | |
900 | if (decode_cache_base[opcode_pc] == NULL) | |
901 | { | |
902 | RX_Opcode_Decoded *opcode_w; | |
903 | rx_data.dpc = opcode_pc; | |
904 | opcode_w = decode_cache_base[opcode_pc] = calloc (1, sizeof (RX_Opcode_Decoded)); | |
905 | opcode_size = rx_decode_opcode (opcode_pc, opcode_w, | |
906 | rx_get_byte, &rx_data); | |
907 | opcode = opcode_w; | |
908 | } | |
909 | else | |
910 | { | |
911 | opcode = decode_cache_base[opcode_pc]; | |
912 | opcode_size = opcode->n_bytes; | |
913 | } | |
93378652 DD |
914 | |
915 | #ifdef CYCLE_ACCURATE | |
916 | if (branch_alignment_penalty) | |
917 | { | |
918 | if ((regs.r_pc ^ (regs.r_pc + opcode_size - 1)) & ~7) | |
919 | { | |
920 | tprintf("1 cycle branch alignment penalty\n"); | |
921 | cycles (branch_alignment_penalty); | |
922 | #ifdef CYCLE_STATS | |
923 | branch_alignment_stalls ++; | |
924 | #endif | |
925 | } | |
926 | branch_alignment_penalty = 0; | |
927 | } | |
928 | #endif | |
929 | ||
4f8d4a38 DD |
930 | regs.r_pc += opcode_size; |
931 | ||
f9c7014e DD |
932 | rx_flagmask = opcode->flags_s; |
933 | rx_flagand = ~(int)opcode->flags_0; | |
934 | rx_flagor = opcode->flags_1; | |
4f8d4a38 | 935 | |
f9c7014e | 936 | switch (opcode->id) |
4f8d4a38 DD |
937 | { |
938 | case RXO_abs: | |
939 | sll = GS (); | |
940 | tprintf("|%lld| = ", sll); | |
941 | if (sll < 0) | |
942 | sll = -sll; | |
943 | tprintf("%lld\n", sll); | |
944 | PD (sll); | |
945 | set_osz (sll, 4); | |
93378652 | 946 | E (1); |
4f8d4a38 DD |
947 | break; |
948 | ||
949 | case RXO_adc: | |
950 | MATH_OP (+,carry); | |
951 | break; | |
952 | ||
953 | case RXO_add: | |
954 | MATH_OP (+,0); | |
955 | break; | |
956 | ||
957 | case RXO_and: | |
958 | LOGIC_OP (&); | |
959 | break; | |
960 | ||
961 | case RXO_bclr: | |
962 | ma = GD (); | |
963 | mb = GS (); | |
f9c7014e | 964 | if (opcode->op[0].type == RX_Operand_Register) |
4f8d4a38 DD |
965 | mb &= 0x1f; |
966 | else | |
967 | mb &= 0x07; | |
968 | ma &= ~(1 << mb); | |
969 | PD (ma); | |
93378652 | 970 | EBIT; |
4f8d4a38 DD |
971 | break; |
972 | ||
973 | case RXO_bmcc: | |
974 | ma = GD (); | |
975 | mb = GS (); | |
f9c7014e | 976 | if (opcode->op[0].type == RX_Operand_Register) |
4f8d4a38 DD |
977 | mb &= 0x1f; |
978 | else | |
979 | mb &= 0x07; | |
980 | if (GS2 ()) | |
981 | ma |= (1 << mb); | |
982 | else | |
983 | ma &= ~(1 << mb); | |
984 | PD (ma); | |
93378652 | 985 | EBIT; |
4f8d4a38 DD |
986 | break; |
987 | ||
988 | case RXO_bnot: | |
989 | ma = GD (); | |
990 | mb = GS (); | |
f9c7014e | 991 | if (opcode->op[0].type == RX_Operand_Register) |
4f8d4a38 DD |
992 | mb &= 0x1f; |
993 | else | |
994 | mb &= 0x07; | |
995 | ma ^= (1 << mb); | |
996 | PD (ma); | |
93378652 | 997 | EBIT; |
4f8d4a38 DD |
998 | break; |
999 | ||
1000 | case RXO_branch: | |
f9c7014e | 1001 | if (opcode->op[1].type == RX_Operand_None || GS()) |
93378652 DD |
1002 | { |
1003 | #ifdef CYCLE_ACCURATE | |
1004 | SI old_pc = regs.r_pc; | |
1005 | int delta; | |
1006 | #endif | |
1007 | regs.r_pc = GD(); | |
1008 | #ifdef CYCLE_ACCURATE | |
1009 | delta = regs.r_pc - old_pc; | |
1010 | if (delta >= 0 && delta < 16 | |
1011 | && opcode_size > 1) | |
1012 | { | |
1013 | tprintf("near forward branch bonus\n"); | |
1014 | cycles (2); | |
1015 | } | |
1016 | else | |
1017 | { | |
1018 | cycles (3); | |
1019 | branch_alignment_penalty = 1; | |
1020 | } | |
1021 | #ifdef CYCLE_STATS | |
1022 | branch_stalls ++; | |
93378652 DD |
1023 | #endif |
1024 | #endif | |
1025 | } | |
1026 | #ifdef CYCLE_ACCURATE | |
1027 | else | |
1028 | cycles (1); | |
1029 | #endif | |
4f8d4a38 DD |
1030 | break; |
1031 | ||
1032 | case RXO_branchrel: | |
1033 | if (GS()) | |
93378652 DD |
1034 | { |
1035 | int delta = GD(); | |
1036 | regs.r_pc += delta; | |
1037 | #ifdef CYCLE_ACCURATE | |
1038 | /* Note: specs say 3, chip says 2. */ | |
1039 | if (delta >= 0 && delta < 16 | |
1040 | && opcode_size > 1) | |
1041 | { | |
1042 | tprintf("near forward branch bonus\n"); | |
1043 | cycles (2); | |
1044 | } | |
1045 | else | |
1046 | { | |
1047 | cycles (3); | |
1048 | branch_alignment_penalty = 1; | |
1049 | } | |
1050 | #ifdef CYCLE_STATS | |
1051 | branch_stalls ++; | |
1052 | #endif | |
1053 | #endif | |
1054 | } | |
1055 | #ifdef CYCLE_ACCURATE | |
1056 | else | |
1057 | cycles (1); | |
1058 | #endif | |
4f8d4a38 DD |
1059 | break; |
1060 | ||
1061 | case RXO_brk: | |
1062 | { | |
1063 | int old_psw = regs.r_psw; | |
1064 | if (rx_in_gdb) | |
f9c7014e | 1065 | DO_RETURN (RX_MAKE_HIT_BREAK ()); |
4f8d4a38 DD |
1066 | if (regs.r_intb == 0) |
1067 | { | |
1068 | tprintf("BREAK hit, no vector table.\n"); | |
f9c7014e | 1069 | DO_RETURN (RX_MAKE_EXITED(1)); |
4f8d4a38 DD |
1070 | } |
1071 | regs.r_psw &= ~(FLAGBIT_I | FLAGBIT_U | FLAGBIT_PM); | |
1072 | pushpc (old_psw); | |
1073 | pushpc (regs.r_pc); | |
1074 | regs.r_pc = mem_get_si (regs.r_intb); | |
93378652 | 1075 | cycles(6); |
4f8d4a38 DD |
1076 | } |
1077 | break; | |
1078 | ||
1079 | case RXO_bset: | |
1080 | ma = GD (); | |
1081 | mb = GS (); | |
f9c7014e | 1082 | if (opcode->op[0].type == RX_Operand_Register) |
4f8d4a38 DD |
1083 | mb &= 0x1f; |
1084 | else | |
1085 | mb &= 0x07; | |
1086 | ma |= (1 << mb); | |
1087 | PD (ma); | |
93378652 | 1088 | EBIT; |
4f8d4a38 DD |
1089 | break; |
1090 | ||
1091 | case RXO_btst: | |
1092 | ma = GS (); | |
1093 | mb = GS2 (); | |
f9c7014e | 1094 | if (opcode->op[1].type == RX_Operand_Register) |
4f8d4a38 DD |
1095 | mb &= 0x1f; |
1096 | else | |
1097 | mb &= 0x07; | |
1098 | umb = ma & (1 << mb); | |
1099 | set_zc (! umb, umb); | |
93378652 | 1100 | EBIT; |
4f8d4a38 DD |
1101 | break; |
1102 | ||
1103 | case RXO_clrpsw: | |
f9c7014e | 1104 | v = 1 << opcode->op[0].reg; |
4f8d4a38 DD |
1105 | if (FLAG_PM |
1106 | && (v == FLAGBIT_I | |
1107 | || v == FLAGBIT_U)) | |
1108 | break; | |
1109 | regs.r_psw &= ~v; | |
93378652 | 1110 | cycles (1); |
4f8d4a38 DD |
1111 | break; |
1112 | ||
1113 | case RXO_div: /* d = d / s */ | |
1114 | ma = GS(); | |
1115 | mb = GD(); | |
1116 | tprintf("%d / %d = ", mb, ma); | |
1117 | if (ma == 0 || (ma == -1 && (unsigned int) mb == 0x80000000)) | |
1118 | { | |
1119 | tprintf("#NAN\n"); | |
1120 | set_flags (FLAGBIT_O, FLAGBIT_O); | |
1121 | } | |
1122 | else | |
1123 | { | |
1124 | v = mb/ma; | |
1125 | tprintf("%d\n", v); | |
1126 | set_flags (FLAGBIT_O, 0); | |
1127 | PD (v); | |
1128 | } | |
93378652 DD |
1129 | /* Note: spec says 3 to 22 cycles, we are pessimistic. */ |
1130 | cycles (22); | |
4f8d4a38 DD |
1131 | break; |
1132 | ||
1133 | case RXO_divu: /* d = d / s */ | |
1134 | uma = GS(); | |
1135 | umb = GD(); | |
1136 | tprintf("%u / %u = ", umb, uma); | |
1137 | if (uma == 0) | |
1138 | { | |
1139 | tprintf("#NAN\n"); | |
1140 | set_flags (FLAGBIT_O, FLAGBIT_O); | |
1141 | } | |
1142 | else | |
1143 | { | |
1144 | v = umb / uma; | |
1145 | tprintf("%u\n", v); | |
1146 | set_flags (FLAGBIT_O, 0); | |
1147 | PD (v); | |
1148 | } | |
93378652 DD |
1149 | /* Note: spec says 2 to 20 cycles, we are pessimistic. */ |
1150 | cycles (20); | |
4f8d4a38 DD |
1151 | break; |
1152 | ||
4f8d4a38 DD |
1153 | case RXO_emul: |
1154 | ma = GD (); | |
1155 | mb = GS (); | |
1156 | sll = (long long)ma * (long long)mb; | |
1157 | tprintf("%d * %d = %lld\n", ma, mb, sll); | |
f9c7014e DD |
1158 | put_reg (opcode->op[0].reg, sll); |
1159 | put_reg (opcode->op[0].reg + 1, sll >> 32); | |
93378652 | 1160 | E2; |
4f8d4a38 DD |
1161 | break; |
1162 | ||
1163 | case RXO_emulu: | |
1164 | uma = GD (); | |
1165 | umb = GS (); | |
1166 | ll = (long long)uma * (long long)umb; | |
1167 | tprintf("%#x * %#x = %#llx\n", uma, umb, ll); | |
f9c7014e DD |
1168 | put_reg (opcode->op[0].reg, ll); |
1169 | put_reg (opcode->op[0].reg + 1, ll >> 32); | |
93378652 | 1170 | E2; |
4f8d4a38 DD |
1171 | break; |
1172 | ||
1173 | case RXO_fadd: | |
1174 | FLOAT_OP (fadd); | |
93378652 | 1175 | E (4); |
4f8d4a38 DD |
1176 | break; |
1177 | ||
1178 | case RXO_fcmp: | |
1179 | ma = GD(); | |
1180 | mb = GS(); | |
1181 | FPCLEAR (); | |
1182 | rxfp_cmp (ma, mb); | |
1183 | FPCHECK (); | |
93378652 | 1184 | E (1); |
4f8d4a38 DD |
1185 | break; |
1186 | ||
1187 | case RXO_fdiv: | |
1188 | FLOAT_OP (fdiv); | |
93378652 | 1189 | E (16); |
4f8d4a38 DD |
1190 | break; |
1191 | ||
1192 | case RXO_fmul: | |
1193 | FLOAT_OP (fmul); | |
93378652 | 1194 | E (3); |
4f8d4a38 DD |
1195 | break; |
1196 | ||
1197 | case RXO_rtfi: | |
1198 | PRIVILEDGED (); | |
1199 | regs.r_psw = regs.r_bpsw; | |
1200 | regs.r_pc = regs.r_bpc; | |
93378652 DD |
1201 | #ifdef CYCLE_ACCURATE |
1202 | regs.fast_return = 0; | |
1203 | cycles(3); | |
1204 | #endif | |
4f8d4a38 DD |
1205 | break; |
1206 | ||
1207 | case RXO_fsub: | |
1208 | FLOAT_OP (fsub); | |
93378652 | 1209 | E (4); |
4f8d4a38 DD |
1210 | break; |
1211 | ||
1212 | case RXO_ftoi: | |
1213 | ma = GS (); | |
1214 | FPCLEAR (); | |
1215 | mb = rxfp_ftoi (ma, FPRM_ZERO); | |
1216 | FPCHECK (); | |
1217 | PD (mb); | |
1218 | tprintf("(int) %g = %d\n", int2float(ma), mb); | |
1219 | set_sz (mb, 4); | |
93378652 | 1220 | E (2); |
4f8d4a38 DD |
1221 | break; |
1222 | ||
1223 | case RXO_int: | |
1224 | v = GS (); | |
1225 | if (v == 255) | |
1226 | { | |
f9c7014e | 1227 | DO_RETURN (rx_syscall (regs.r[5])); |
4f8d4a38 DD |
1228 | } |
1229 | else | |
1230 | { | |
1231 | int old_psw = regs.r_psw; | |
1232 | regs.r_psw &= ~(FLAGBIT_I | FLAGBIT_U | FLAGBIT_PM); | |
1233 | pushpc (old_psw); | |
1234 | pushpc (regs.r_pc); | |
1235 | regs.r_pc = mem_get_si (regs.r_intb + 4 * v); | |
1236 | } | |
93378652 | 1237 | cycles (6); |
4f8d4a38 DD |
1238 | break; |
1239 | ||
1240 | case RXO_itof: | |
1241 | ma = GS (); | |
1242 | FPCLEAR (); | |
1243 | mb = rxfp_itof (ma, regs.r_fpsw); | |
1244 | FPCHECK (); | |
1245 | tprintf("(float) %d = %x\n", ma, mb); | |
1246 | PD (mb); | |
1247 | set_sz (ma, 4); | |
93378652 | 1248 | E (2); |
4f8d4a38 DD |
1249 | break; |
1250 | ||
1251 | case RXO_jsr: | |
1252 | case RXO_jsrrel: | |
93378652 DD |
1253 | { |
1254 | #ifdef CYCLE_ACCURATE | |
1255 | int delta; | |
1256 | regs.m2m = 0; | |
1257 | #endif | |
1258 | v = GD (); | |
1259 | #ifdef CYCLE_ACCURATE | |
1260 | regs.link_register = regs.r_pc; | |
1261 | #endif | |
1262 | pushpc (get_reg (pc)); | |
f9c7014e | 1263 | if (opcode->id == RXO_jsrrel) |
93378652 DD |
1264 | v += regs.r_pc; |
1265 | #ifdef CYCLE_ACCURATE | |
1266 | delta = v - regs.r_pc; | |
1267 | #endif | |
1268 | put_reg (pc, v); | |
1269 | #ifdef CYCLE_ACCURATE | |
1270 | /* Note: docs say 3, chip says 2 */ | |
1271 | if (delta >= 0 && delta < 16) | |
1272 | { | |
1273 | tprintf ("near forward jsr bonus\n"); | |
1274 | cycles (2); | |
1275 | } | |
1276 | else | |
1277 | { | |
1278 | branch_alignment_penalty = 1; | |
1279 | cycles (3); | |
1280 | } | |
1281 | regs.fast_return = 1; | |
1282 | #endif | |
1283 | } | |
4f8d4a38 DD |
1284 | break; |
1285 | ||
1286 | case RXO_machi: | |
1287 | ll = (long long)(signed short)(GS() >> 16) * (long long)(signed short)(GS2 () >> 16); | |
1288 | ll <<= 16; | |
1289 | put_reg64 (acc64, ll + regs.r_acc); | |
93378652 | 1290 | E1; |
4f8d4a38 DD |
1291 | break; |
1292 | ||
1293 | case RXO_maclo: | |
1294 | ll = (long long)(signed short)(GS()) * (long long)(signed short)(GS2 ()); | |
1295 | ll <<= 16; | |
1296 | put_reg64 (acc64, ll + regs.r_acc); | |
93378652 | 1297 | E1; |
4f8d4a38 DD |
1298 | break; |
1299 | ||
1300 | case RXO_max: | |
4f8d4a38 | 1301 | mb = GS(); |
93378652 | 1302 | ma = GD(); |
4f8d4a38 DD |
1303 | if (ma > mb) |
1304 | PD (ma); | |
1305 | else | |
1306 | PD (mb); | |
93378652 | 1307 | E (1); |
4f8d4a38 DD |
1308 | break; |
1309 | ||
1310 | case RXO_min: | |
4f8d4a38 | 1311 | mb = GS(); |
93378652 | 1312 | ma = GD(); |
4f8d4a38 DD |
1313 | if (ma < mb) |
1314 | PD (ma); | |
1315 | else | |
1316 | PD (mb); | |
93378652 | 1317 | E (1); |
4f8d4a38 DD |
1318 | break; |
1319 | ||
1320 | case RXO_mov: | |
1321 | v = GS (); | |
93378652 | 1322 | |
f9c7014e DD |
1323 | if (opcode->op[0].type == RX_Operand_Register |
1324 | && opcode->op[0].reg == 16 /* PSW */) | |
4f8d4a38 DD |
1325 | { |
1326 | /* Special case, LDC and POPC can't ever modify PM. */ | |
1327 | int pm = regs.r_psw & FLAGBIT_PM; | |
1328 | v &= ~ FLAGBIT_PM; | |
1329 | v |= pm; | |
1330 | if (pm) | |
1331 | { | |
1332 | v &= ~ (FLAGBIT_I | FLAGBIT_U | FLAGBITS_IPL); | |
1333 | v |= pm; | |
1334 | } | |
1335 | } | |
1336 | if (FLAG_PM) | |
1337 | { | |
1338 | /* various things can't be changed in user mode. */ | |
f9c7014e DD |
1339 | if (opcode->op[0].type == RX_Operand_Register) |
1340 | if (opcode->op[0].reg == 32) | |
4f8d4a38 DD |
1341 | { |
1342 | v &= ~ (FLAGBIT_I | FLAGBIT_U | FLAGBITS_IPL); | |
1343 | v |= regs.r_psw & (FLAGBIT_I | FLAGBIT_U | FLAGBITS_IPL); | |
1344 | } | |
f9c7014e DD |
1345 | if (opcode->op[0].reg == 34 /* ISP */ |
1346 | || opcode->op[0].reg == 37 /* BPSW */ | |
1347 | || opcode->op[0].reg == 39 /* INTB */ | |
1348 | || opcode->op[0].reg == 38 /* VCT */) | |
4f8d4a38 DD |
1349 | /* These are ignored. */ |
1350 | break; | |
1351 | } | |
93378652 DD |
1352 | if (OM(0) && OM(1)) |
1353 | cycles (2); | |
1354 | else | |
1355 | cycles (1); | |
1356 | ||
4f8d4a38 | 1357 | PD (v); |
93378652 DD |
1358 | |
1359 | #ifdef CYCLE_ACCURATE | |
f9c7014e DD |
1360 | if ((opcode->op[0].type == RX_Operand_Predec |
1361 | && opcode->op[1].type == RX_Operand_Register) | |
1362 | || (opcode->op[0].type == RX_Operand_Postinc | |
1363 | && opcode->op[1].type == RX_Operand_Register)) | |
93378652 DD |
1364 | { |
1365 | /* Special case: push reg doesn't cause a memory stall. */ | |
1366 | memory_dest = 0; | |
1367 | tprintf("push special case\n"); | |
1368 | } | |
1369 | #endif | |
1370 | ||
4f8d4a38 DD |
1371 | set_sz (v, DSZ()); |
1372 | break; | |
1373 | ||
1374 | case RXO_movbi: | |
4f8d4a38 | 1375 | PD (GS ()); |
93378652 | 1376 | cycles (1); |
4f8d4a38 DD |
1377 | break; |
1378 | ||
1379 | case RXO_movbir: | |
4f8d4a38 | 1380 | PS (GD ()); |
93378652 | 1381 | cycles (1); |
4f8d4a38 DD |
1382 | break; |
1383 | ||
1384 | case RXO_mul: | |
93378652 DD |
1385 | v = US2 (); |
1386 | ll = (unsigned long long) US1() * (unsigned long long) v; | |
4f8d4a38 | 1387 | PD(ll); |
93378652 | 1388 | E (1); |
4f8d4a38 DD |
1389 | break; |
1390 | ||
1391 | case RXO_mulhi: | |
93378652 DD |
1392 | v = GS2 (); |
1393 | ll = (long long)(signed short)(GS() >> 16) * (long long)(signed short)(v >> 16); | |
4f8d4a38 DD |
1394 | ll <<= 16; |
1395 | put_reg64 (acc64, ll); | |
93378652 | 1396 | E1; |
4f8d4a38 DD |
1397 | break; |
1398 | ||
1399 | case RXO_mullo: | |
93378652 DD |
1400 | v = GS2 (); |
1401 | ll = (long long)(signed short)(GS()) * (long long)(signed short)(v); | |
4f8d4a38 DD |
1402 | ll <<= 16; |
1403 | put_reg64 (acc64, ll); | |
93378652 | 1404 | E1; |
4f8d4a38 DD |
1405 | break; |
1406 | ||
1407 | case RXO_mvfachi: | |
1408 | PD (get_reg (acchi)); | |
93378652 | 1409 | E1; |
4f8d4a38 DD |
1410 | break; |
1411 | ||
1412 | case RXO_mvfaclo: | |
1413 | PD (get_reg (acclo)); | |
93378652 | 1414 | E1; |
4f8d4a38 DD |
1415 | break; |
1416 | ||
1417 | case RXO_mvfacmi: | |
1418 | PD (get_reg (accmi)); | |
93378652 | 1419 | E1; |
4f8d4a38 DD |
1420 | break; |
1421 | ||
1422 | case RXO_mvtachi: | |
1423 | put_reg (acchi, GS ()); | |
93378652 | 1424 | E1; |
4f8d4a38 DD |
1425 | break; |
1426 | ||
1427 | case RXO_mvtaclo: | |
1428 | put_reg (acclo, GS ()); | |
93378652 | 1429 | E1; |
4f8d4a38 DD |
1430 | break; |
1431 | ||
1432 | case RXO_mvtipl: | |
1433 | regs.r_psw &= ~ FLAGBITS_IPL; | |
1434 | regs.r_psw |= (GS () << FLAGSHIFT_IPL) & FLAGBITS_IPL; | |
93378652 | 1435 | E1; |
4f8d4a38 DD |
1436 | break; |
1437 | ||
1438 | case RXO_nop: | |
f9c7014e DD |
1439 | case RXO_nop2: |
1440 | case RXO_nop3: | |
93378652 | 1441 | E1; |
4f8d4a38 DD |
1442 | break; |
1443 | ||
1444 | case RXO_or: | |
1445 | LOGIC_OP (|); | |
1446 | break; | |
1447 | ||
1448 | case RXO_popm: | |
1449 | /* POPM cannot pop R0 (sp). */ | |
f9c7014e | 1450 | if (opcode->op[1].reg == 0 || opcode->op[2].reg == 0) |
4f8d4a38 | 1451 | EXCEPTION (EX_UNDEFINED); |
f9c7014e | 1452 | if (opcode->op[1].reg >= opcode->op[2].reg) |
4f8d4a38 DD |
1453 | { |
1454 | regs.r_pc = opcode_pc; | |
f9c7014e | 1455 | DO_RETURN (RX_MAKE_STOPPED (SIGILL)); |
4f8d4a38 | 1456 | } |
f9c7014e | 1457 | for (v = opcode->op[1].reg; v <= opcode->op[2].reg; v++) |
93378652 DD |
1458 | { |
1459 | cycles (1); | |
1460 | RLD (v); | |
1461 | put_reg (v, pop ()); | |
1462 | } | |
4f8d4a38 DD |
1463 | break; |
1464 | ||
1465 | case RXO_pushm: | |
1466 | /* PUSHM cannot push R0 (sp). */ | |
f9c7014e | 1467 | if (opcode->op[1].reg == 0 || opcode->op[2].reg == 0) |
4f8d4a38 | 1468 | EXCEPTION (EX_UNDEFINED); |
f9c7014e | 1469 | if (opcode->op[1].reg >= opcode->op[2].reg) |
4f8d4a38 DD |
1470 | { |
1471 | regs.r_pc = opcode_pc; | |
1472 | return RX_MAKE_STOPPED (SIGILL); | |
1473 | } | |
f9c7014e | 1474 | for (v = opcode->op[2].reg; v >= opcode->op[1].reg; v--) |
93378652 DD |
1475 | { |
1476 | RL (v); | |
1477 | push (get_reg (v)); | |
1478 | } | |
f9c7014e | 1479 | cycles (opcode->op[2].reg - opcode->op[1].reg + 1); |
4f8d4a38 DD |
1480 | break; |
1481 | ||
1482 | case RXO_racw: | |
1483 | ll = get_reg64 (acc64) << GS (); | |
1484 | ll += 0x80000000ULL; | |
1485 | if ((signed long long)ll > (signed long long)0x00007fff00000000ULL) | |
1486 | ll = 0x00007fff00000000ULL; | |
1487 | else if ((signed long long)ll < (signed long long)0xffff800000000000ULL) | |
1488 | ll = 0xffff800000000000ULL; | |
1489 | else | |
1490 | ll &= 0xffffffff00000000ULL; | |
1491 | put_reg64 (acc64, ll); | |
93378652 | 1492 | E1; |
4f8d4a38 DD |
1493 | break; |
1494 | ||
1495 | case RXO_rte: | |
1496 | PRIVILEDGED (); | |
1497 | regs.r_pc = poppc (); | |
1498 | regs.r_psw = poppc (); | |
1499 | if (FLAG_PM) | |
1500 | regs.r_psw |= FLAGBIT_U; | |
93378652 DD |
1501 | #ifdef CYCLE_ACCURATE |
1502 | regs.fast_return = 0; | |
1503 | cycles (6); | |
1504 | #endif | |
4f8d4a38 DD |
1505 | break; |
1506 | ||
1507 | case RXO_revl: | |
1508 | uma = GS (); | |
1509 | umb = (((uma >> 24) & 0xff) | |
1510 | | ((uma >> 8) & 0xff00) | |
1511 | | ((uma << 8) & 0xff0000) | |
1512 | | ((uma << 24) & 0xff000000UL)); | |
1513 | PD (umb); | |
93378652 | 1514 | E1; |
4f8d4a38 DD |
1515 | break; |
1516 | ||
1517 | case RXO_revw: | |
1518 | uma = GS (); | |
1519 | umb = (((uma >> 8) & 0x00ff00ff) | |
1520 | | ((uma << 8) & 0xff00ff00UL)); | |
1521 | PD (umb); | |
93378652 | 1522 | E1; |
4f8d4a38 DD |
1523 | break; |
1524 | ||
1525 | case RXO_rmpa: | |
93378652 DD |
1526 | RL(4); |
1527 | RL(5); | |
1528 | #ifdef CYCLE_ACCURATE | |
1529 | tx = regs.r[3]; | |
1530 | #endif | |
1531 | ||
4f8d4a38 DD |
1532 | while (regs.r[3] != 0) |
1533 | { | |
1534 | long long tmp; | |
1535 | ||
f9c7014e | 1536 | switch (opcode->size) |
4f8d4a38 DD |
1537 | { |
1538 | case RX_Long: | |
1539 | ma = mem_get_si (regs.r[1]); | |
1540 | mb = mem_get_si (regs.r[2]); | |
1541 | regs.r[1] += 4; | |
1542 | regs.r[2] += 4; | |
1543 | break; | |
1544 | case RX_Word: | |
1545 | ma = sign_ext (mem_get_hi (regs.r[1]), 16); | |
1546 | mb = sign_ext (mem_get_hi (regs.r[2]), 16); | |
1547 | regs.r[1] += 2; | |
1548 | regs.r[2] += 2; | |
1549 | break; | |
1550 | case RX_Byte: | |
1551 | ma = sign_ext (mem_get_qi (regs.r[1]), 8); | |
1552 | mb = sign_ext (mem_get_qi (regs.r[2]), 8); | |
1553 | regs.r[1] += 1; | |
1554 | regs.r[2] += 1; | |
1555 | break; | |
1556 | default: | |
1557 | abort (); | |
1558 | } | |
1559 | /* We do the multiply as a signed value. */ | |
1560 | sll = (long long)ma * (long long)mb; | |
1561 | tprintf(" %016llx = %d * %d\n", sll, ma, mb); | |
1562 | /* but we do the sum as unsigned, while sign extending the operands. */ | |
1563 | tmp = regs.r[4] + (sll & 0xffffffffUL); | |
1564 | regs.r[4] = tmp & 0xffffffffUL; | |
1565 | tmp >>= 32; | |
1566 | sll >>= 32; | |
1567 | tmp += regs.r[5] + (sll & 0xffffffffUL); | |
1568 | regs.r[5] = tmp & 0xffffffffUL; | |
1569 | tmp >>= 32; | |
1570 | sll >>= 32; | |
1571 | tmp += regs.r[6] + (sll & 0xffffffffUL); | |
1572 | regs.r[6] = tmp & 0xffffffffUL; | |
1573 | tprintf("%08lx\033[36m%08lx\033[0m%08lx\n", | |
1574 | (unsigned long) regs.r[6], | |
1575 | (unsigned long) regs.r[5], | |
1576 | (unsigned long) regs.r[4]); | |
1577 | ||
1578 | regs.r[3] --; | |
1579 | } | |
1580 | if (regs.r[6] & 0x00008000) | |
1581 | regs.r[6] |= 0xffff0000UL; | |
1582 | else | |
1583 | regs.r[6] &= 0x0000ffff; | |
1584 | ma = (regs.r[6] & 0x80000000UL) ? FLAGBIT_S : 0; | |
1585 | if (regs.r[6] != 0 && regs.r[6] != 0xffffffffUL) | |
1586 | set_flags (FLAGBIT_O|FLAGBIT_S, ma | FLAGBIT_O); | |
1587 | else | |
1588 | set_flags (FLAGBIT_O|FLAGBIT_S, ma); | |
93378652 | 1589 | #ifdef CYCLE_ACCURATE |
f9c7014e | 1590 | switch (opcode->size) |
93378652 DD |
1591 | { |
1592 | case RX_Long: | |
1593 | cycles (6 + 4 * tx); | |
1594 | break; | |
1595 | case RX_Word: | |
1596 | cycles (6 + 5 * (tx / 2) + 4 * (tx % 2)); | |
1597 | break; | |
1598 | case RX_Byte: | |
1599 | cycles (6 + 7 * (tx / 4) + 4 * (tx % 4)); | |
1600 | break; | |
1601 | default: | |
1602 | abort (); | |
1603 | } | |
1604 | #endif | |
4f8d4a38 DD |
1605 | break; |
1606 | ||
1607 | case RXO_rolc: | |
1608 | v = GD (); | |
1609 | ma = v & 0x80000000UL; | |
1610 | v <<= 1; | |
1611 | v |= carry; | |
1612 | set_szc (v, 4, ma); | |
1613 | PD (v); | |
93378652 | 1614 | E1; |
4f8d4a38 DD |
1615 | break; |
1616 | ||
1617 | case RXO_rorc: | |
1618 | uma = GD (); | |
1619 | mb = uma & 1; | |
1620 | uma >>= 1; | |
1621 | uma |= (carry ? 0x80000000UL : 0); | |
1622 | set_szc (uma, 4, mb); | |
1623 | PD (uma); | |
93378652 | 1624 | E1; |
4f8d4a38 DD |
1625 | break; |
1626 | ||
1627 | case RXO_rotl: | |
1628 | mb = GS (); | |
1629 | uma = GD (); | |
1630 | if (mb) | |
1631 | { | |
1632 | uma = (uma << mb) | (uma >> (32-mb)); | |
1633 | mb = uma & 1; | |
1634 | } | |
1635 | set_szc (uma, 4, mb); | |
1636 | PD (uma); | |
93378652 | 1637 | E1; |
4f8d4a38 DD |
1638 | break; |
1639 | ||
1640 | case RXO_rotr: | |
1641 | mb = GS (); | |
1642 | uma = GD (); | |
1643 | if (mb) | |
1644 | { | |
1645 | uma = (uma >> mb) | (uma << (32-mb)); | |
1646 | mb = uma & 0x80000000; | |
1647 | } | |
1648 | set_szc (uma, 4, mb); | |
1649 | PD (uma); | |
93378652 | 1650 | E1; |
4f8d4a38 DD |
1651 | break; |
1652 | ||
1653 | case RXO_round: | |
1654 | ma = GS (); | |
1655 | FPCLEAR (); | |
1656 | mb = rxfp_ftoi (ma, regs.r_fpsw); | |
1657 | FPCHECK (); | |
1658 | PD (mb); | |
1659 | tprintf("(int) %g = %d\n", int2float(ma), mb); | |
1660 | set_sz (mb, 4); | |
93378652 | 1661 | E (2); |
4f8d4a38 DD |
1662 | break; |
1663 | ||
1664 | case RXO_rts: | |
93378652 DD |
1665 | { |
1666 | #ifdef CYCLE_ACCURATE | |
1667 | int cyc = 5; | |
1668 | #endif | |
1669 | regs.r_pc = poppc (); | |
1670 | #ifdef CYCLE_ACCURATE | |
1671 | /* Note: specs say 5, chip says 3. */ | |
1672 | if (regs.fast_return && regs.link_register == regs.r_pc) | |
1673 | { | |
1674 | #ifdef CYCLE_STATS | |
1675 | fast_returns ++; | |
1676 | #endif | |
1677 | tprintf("fast return bonus\n"); | |
1678 | cyc -= 2; | |
1679 | } | |
1680 | cycles (cyc); | |
1681 | regs.fast_return = 0; | |
1682 | branch_alignment_penalty = 1; | |
1683 | #endif | |
1684 | } | |
4f8d4a38 DD |
1685 | break; |
1686 | ||
1687 | case RXO_rtsd: | |
f9c7014e | 1688 | if (opcode->op[2].type == RX_Operand_Register) |
4f8d4a38 DD |
1689 | { |
1690 | int i; | |
1691 | /* RTSD cannot pop R0 (sp). */ | |
f9c7014e DD |
1692 | put_reg (0, get_reg (0) + GS() - (opcode->op[0].reg-opcode->op[2].reg+1)*4); |
1693 | if (opcode->op[2].reg == 0) | |
4f8d4a38 | 1694 | EXCEPTION (EX_UNDEFINED); |
93378652 | 1695 | #ifdef CYCLE_ACCURATE |
f9c7014e | 1696 | tx = opcode->op[0].reg - opcode->op[2].reg + 1; |
93378652 | 1697 | #endif |
f9c7014e | 1698 | for (i = opcode->op[2].reg; i <= opcode->op[0].reg; i ++) |
93378652 DD |
1699 | { |
1700 | RLD (i); | |
1701 | put_reg (i, pop ()); | |
1702 | } | |
1703 | } | |
1704 | else | |
1705 | { | |
1706 | #ifdef CYCLE_ACCURATE | |
1707 | tx = 0; | |
1708 | #endif | |
1709 | put_reg (0, get_reg (0) + GS()); | |
1710 | } | |
1711 | put_reg (pc, poppc()); | |
1712 | #ifdef CYCLE_ACCURATE | |
1713 | if (regs.fast_return && regs.link_register == regs.r_pc) | |
1714 | { | |
1715 | tprintf("fast return bonus\n"); | |
1716 | #ifdef CYCLE_STATS | |
1717 | fast_returns ++; | |
1718 | #endif | |
1719 | cycles (tx < 3 ? 3 : tx + 1); | |
4f8d4a38 DD |
1720 | } |
1721 | else | |
93378652 DD |
1722 | { |
1723 | cycles (tx < 5 ? 5 : tx + 1); | |
1724 | } | |
1725 | regs.fast_return = 0; | |
1726 | branch_alignment_penalty = 1; | |
1727 | #endif | |
4f8d4a38 DD |
1728 | break; |
1729 | ||
1730 | case RXO_sat: | |
1731 | if (FLAG_O && FLAG_S) | |
1732 | PD (0x7fffffffUL); | |
1733 | else if (FLAG_O && ! FLAG_S) | |
1734 | PD (0x80000000UL); | |
93378652 | 1735 | E1; |
4f8d4a38 DD |
1736 | break; |
1737 | ||
1738 | case RXO_sbb: | |
1739 | MATH_OP (-, ! carry); | |
1740 | break; | |
1741 | ||
1742 | case RXO_sccnd: | |
1743 | if (GS()) | |
1744 | PD (1); | |
1745 | else | |
1746 | PD (0); | |
93378652 | 1747 | E1; |
4f8d4a38 DD |
1748 | break; |
1749 | ||
1750 | case RXO_scmpu: | |
93378652 DD |
1751 | #ifdef CYCLE_ACCURATE |
1752 | tx = regs.r[3]; | |
1753 | #endif | |
4f8d4a38 DD |
1754 | while (regs.r[3] != 0) |
1755 | { | |
1756 | uma = mem_get_qi (regs.r[1] ++); | |
1757 | umb = mem_get_qi (regs.r[2] ++); | |
1758 | regs.r[3] --; | |
1759 | if (uma != umb || uma == 0) | |
1760 | break; | |
1761 | } | |
1762 | if (uma == umb) | |
1763 | set_zc (1, 1); | |
1764 | else | |
1765 | set_zc (0, ((int)uma - (int)umb) >= 0); | |
93378652 | 1766 | cycles (2 + 4 * (tx / 4) + 4 * (tx % 4)); |
4f8d4a38 DD |
1767 | break; |
1768 | ||
1769 | case RXO_setpsw: | |
f9c7014e | 1770 | v = 1 << opcode->op[0].reg; |
4f8d4a38 DD |
1771 | if (FLAG_PM |
1772 | && (v == FLAGBIT_I | |
1773 | || v == FLAGBIT_U)) | |
1774 | break; | |
1775 | regs.r_psw |= v; | |
93378652 | 1776 | cycles (1); |
4f8d4a38 DD |
1777 | break; |
1778 | ||
1779 | case RXO_smovb: | |
93378652 DD |
1780 | RL (3); |
1781 | #ifdef CYCLE_ACCURATE | |
1782 | tx = regs.r[3]; | |
1783 | #endif | |
4f8d4a38 DD |
1784 | while (regs.r[3]) |
1785 | { | |
1786 | uma = mem_get_qi (regs.r[2] --); | |
1787 | mem_put_qi (regs.r[1]--, uma); | |
1788 | regs.r[3] --; | |
1789 | } | |
93378652 DD |
1790 | #ifdef CYCLE_ACCURATE |
1791 | if (tx > 3) | |
1792 | cycles (6 + 3 * (tx / 4) + 3 * (tx % 4)); | |
1793 | else | |
1794 | cycles (2 + 3 * (tx % 4)); | |
1795 | #endif | |
4f8d4a38 DD |
1796 | break; |
1797 | ||
1798 | case RXO_smovf: | |
93378652 DD |
1799 | RL (3); |
1800 | #ifdef CYCLE_ACCURATE | |
1801 | tx = regs.r[3]; | |
1802 | #endif | |
4f8d4a38 DD |
1803 | while (regs.r[3]) |
1804 | { | |
1805 | uma = mem_get_qi (regs.r[2] ++); | |
1806 | mem_put_qi (regs.r[1]++, uma); | |
1807 | regs.r[3] --; | |
1808 | } | |
93378652 | 1809 | cycles (2 + 3 * (int)(tx / 4) + 3 * (tx % 4)); |
4f8d4a38 DD |
1810 | break; |
1811 | ||
1812 | case RXO_smovu: | |
1813 | while (regs.r[3] != 0) | |
1814 | { | |
1815 | uma = mem_get_qi (regs.r[2] ++); | |
1816 | mem_put_qi (regs.r[1]++, uma); | |
1817 | regs.r[3] --; | |
1818 | if (uma == 0) | |
1819 | break; | |
1820 | } | |
1821 | break; | |
1822 | ||
1823 | case RXO_shar: /* d = ma >> mb */ | |
1824 | SHIFT_OP (sll, int, mb, >>=, 1); | |
93378652 | 1825 | E (1); |
4f8d4a38 DD |
1826 | break; |
1827 | ||
1828 | case RXO_shll: /* d = ma << mb */ | |
1829 | SHIFT_OP (ll, int, mb, <<=, 0x80000000UL); | |
93378652 | 1830 | E (1); |
4f8d4a38 DD |
1831 | break; |
1832 | ||
1833 | case RXO_shlr: /* d = ma >> mb */ | |
1834 | SHIFT_OP (ll, unsigned int, mb, >>=, 1); | |
93378652 | 1835 | E (1); |
4f8d4a38 DD |
1836 | break; |
1837 | ||
1838 | case RXO_sstr: | |
93378652 DD |
1839 | RL (3); |
1840 | #ifdef CYCLE_ACCURATE | |
1841 | tx = regs.r[3]; | |
1842 | #endif | |
f9c7014e | 1843 | switch (opcode->size) |
4f8d4a38 DD |
1844 | { |
1845 | case RX_Long: | |
1846 | while (regs.r[3] != 0) | |
1847 | { | |
1848 | mem_put_si (regs.r[1], regs.r[2]); | |
1849 | regs.r[1] += 4; | |
1850 | regs.r[3] --; | |
1851 | } | |
93378652 | 1852 | cycles (2 + tx); |
4f8d4a38 DD |
1853 | break; |
1854 | case RX_Word: | |
1855 | while (regs.r[3] != 0) | |
1856 | { | |
1857 | mem_put_hi (regs.r[1], regs.r[2]); | |
1858 | regs.r[1] += 2; | |
1859 | regs.r[3] --; | |
1860 | } | |
93378652 | 1861 | cycles (2 + (int)(tx / 2) + tx % 2); |
4f8d4a38 DD |
1862 | break; |
1863 | case RX_Byte: | |
1864 | while (regs.r[3] != 0) | |
1865 | { | |
1866 | mem_put_qi (regs.r[1], regs.r[2]); | |
1867 | regs.r[1] ++; | |
1868 | regs.r[3] --; | |
1869 | } | |
93378652 | 1870 | cycles (2 + (int)(tx / 4) + tx % 4); |
4f8d4a38 DD |
1871 | break; |
1872 | default: | |
1873 | abort (); | |
1874 | } | |
1875 | break; | |
1876 | ||
1877 | case RXO_stcc: | |
1878 | if (GS2()) | |
1879 | PD (GS ()); | |
93378652 | 1880 | E1; |
4f8d4a38 DD |
1881 | break; |
1882 | ||
1883 | case RXO_stop: | |
1884 | PRIVILEDGED (); | |
1885 | regs.r_psw |= FLAGBIT_I; | |
f9c7014e | 1886 | DO_RETURN (RX_MAKE_STOPPED(0)); |
4f8d4a38 DD |
1887 | |
1888 | case RXO_sub: | |
1889 | MATH_OP (-, 0); | |
1890 | break; | |
1891 | ||
1892 | case RXO_suntil: | |
93378652 DD |
1893 | RL(3); |
1894 | #ifdef CYCLE_ACCURATE | |
1895 | tx = regs.r[3]; | |
1896 | #endif | |
4f8d4a38 | 1897 | if (regs.r[3] == 0) |
93378652 DD |
1898 | { |
1899 | cycles (3); | |
1900 | break; | |
1901 | } | |
f9c7014e | 1902 | switch (opcode->size) |
4f8d4a38 DD |
1903 | { |
1904 | case RX_Long: | |
1905 | uma = get_reg (2); | |
1906 | while (regs.r[3] != 0) | |
1907 | { | |
1908 | regs.r[3] --; | |
1909 | umb = mem_get_si (get_reg (1)); | |
1910 | regs.r[1] += 4; | |
1911 | if (umb == uma) | |
1912 | break; | |
1913 | } | |
93378652 | 1914 | cycles (3 + 3 * tx); |
4f8d4a38 DD |
1915 | break; |
1916 | case RX_Word: | |
1917 | uma = get_reg (2) & 0xffff; | |
1918 | while (regs.r[3] != 0) | |
1919 | { | |
1920 | regs.r[3] --; | |
1921 | umb = mem_get_hi (get_reg (1)); | |
1922 | regs.r[1] += 2; | |
1923 | if (umb == uma) | |
1924 | break; | |
1925 | } | |
93378652 | 1926 | cycles (3 + 3 * (tx / 2) + 3 * (tx % 2)); |
4f8d4a38 DD |
1927 | break; |
1928 | case RX_Byte: | |
1929 | uma = get_reg (2) & 0xff; | |
1930 | while (regs.r[3] != 0) | |
1931 | { | |
1932 | regs.r[3] --; | |
1933 | umb = mem_get_qi (regs.r[1]); | |
1934 | regs.r[1] += 1; | |
1935 | if (umb == uma) | |
1936 | break; | |
1937 | } | |
93378652 | 1938 | cycles (3 + 3 * (tx / 4) + 3 * (tx % 4)); |
4f8d4a38 DD |
1939 | break; |
1940 | default: | |
1941 | abort(); | |
1942 | } | |
1943 | if (uma == umb) | |
1944 | set_zc (1, 1); | |
1945 | else | |
1946 | set_zc (0, ((int)uma - (int)umb) >= 0); | |
1947 | break; | |
1948 | ||
1949 | case RXO_swhile: | |
93378652 DD |
1950 | RL(3); |
1951 | #ifdef CYCLE_ACCURATE | |
1952 | tx = regs.r[3]; | |
1953 | #endif | |
4f8d4a38 DD |
1954 | if (regs.r[3] == 0) |
1955 | break; | |
f9c7014e | 1956 | switch (opcode->size) |
4f8d4a38 DD |
1957 | { |
1958 | case RX_Long: | |
1959 | uma = get_reg (2); | |
1960 | while (regs.r[3] != 0) | |
1961 | { | |
1962 | regs.r[3] --; | |
1963 | umb = mem_get_si (get_reg (1)); | |
117f2c0d | 1964 | regs.r[1] += 4; |
4f8d4a38 DD |
1965 | if (umb != uma) |
1966 | break; | |
4f8d4a38 | 1967 | } |
93378652 | 1968 | cycles (3 + 3 * tx); |
4f8d4a38 DD |
1969 | break; |
1970 | case RX_Word: | |
1971 | uma = get_reg (2) & 0xffff; | |
1972 | while (regs.r[3] != 0) | |
1973 | { | |
1974 | regs.r[3] --; | |
1975 | umb = mem_get_hi (get_reg (1)); | |
117f2c0d | 1976 | regs.r[1] += 2; |
4f8d4a38 DD |
1977 | if (umb != uma) |
1978 | break; | |
4f8d4a38 | 1979 | } |
93378652 | 1980 | cycles (3 + 3 * (tx / 2) + 3 * (tx % 2)); |
4f8d4a38 DD |
1981 | break; |
1982 | case RX_Byte: | |
1983 | uma = get_reg (2) & 0xff; | |
1984 | while (regs.r[3] != 0) | |
1985 | { | |
1986 | regs.r[3] --; | |
1987 | umb = mem_get_qi (regs.r[1]); | |
117f2c0d | 1988 | regs.r[1] += 1; |
4f8d4a38 DD |
1989 | if (umb != uma) |
1990 | break; | |
4f8d4a38 | 1991 | } |
93378652 | 1992 | cycles (3 + 3 * (tx / 4) + 3 * (tx % 4)); |
4f8d4a38 DD |
1993 | break; |
1994 | default: | |
1995 | abort(); | |
1996 | } | |
1997 | if (uma == umb) | |
1998 | set_zc (1, 1); | |
1999 | else | |
2000 | set_zc (0, ((int)uma - (int)umb) >= 0); | |
2001 | break; | |
2002 | ||
2003 | case RXO_wait: | |
2004 | PRIVILEDGED (); | |
2005 | regs.r_psw |= FLAGBIT_I; | |
f9c7014e | 2006 | DO_RETURN (RX_MAKE_STOPPED(0)); |
4f8d4a38 DD |
2007 | |
2008 | case RXO_xchg: | |
93378652 DD |
2009 | #ifdef CYCLE_ACCURATE |
2010 | regs.m2m = 0; | |
2011 | #endif | |
4f8d4a38 DD |
2012 | v = GS (); /* This is the memory operand, if any. */ |
2013 | PS (GD ()); /* and this may change the address register. */ | |
2014 | PD (v); | |
93378652 DD |
2015 | E2; |
2016 | #ifdef CYCLE_ACCURATE | |
2017 | /* all M cycles happen during xchg's cycles. */ | |
2018 | memory_dest = 0; | |
2019 | memory_source = 0; | |
2020 | #endif | |
4f8d4a38 DD |
2021 | break; |
2022 | ||
2023 | case RXO_xor: | |
2024 | LOGIC_OP (^); | |
2025 | break; | |
2026 | ||
2027 | default: | |
2028 | EXCEPTION (EX_UNDEFINED); | |
2029 | } | |
2030 | ||
93378652 DD |
2031 | #ifdef CYCLE_ACCURATE |
2032 | regs.m2m = 0; | |
2033 | if (memory_source) | |
2034 | regs.m2m |= M2M_SRC; | |
2035 | if (memory_dest) | |
2036 | regs.m2m |= M2M_DST; | |
2037 | ||
2038 | regs.rt = new_rt; | |
2039 | new_rt = -1; | |
2040 | #endif | |
2041 | ||
2042 | #ifdef CYCLE_STATS | |
2043 | if (prev_cycle_count == regs.cycle_count) | |
2044 | { | |
f9c7014e | 2045 | printf("Cycle count not updated! id %s\n", id_names[opcode->id]); |
93378652 DD |
2046 | abort (); |
2047 | } | |
2048 | #endif | |
2049 | ||
2050 | #ifdef CYCLE_STATS | |
2051 | if (running_benchmark) | |
2052 | { | |
f9c7014e | 2053 | int omap = op_lookup (opcode->op[0].type, opcode->op[1].type, opcode->op[2].type); |
93378652 DD |
2054 | |
2055 | ||
f9c7014e DD |
2056 | cycles_per_id[opcode->id][omap] += regs.cycle_count - prev_cycle_count; |
2057 | times_per_id[opcode->id][omap] ++; | |
93378652 | 2058 | |
f9c7014e | 2059 | times_per_pair[prev_opcode_id][po0][opcode->id][omap] ++; |
93378652 | 2060 | |
f9c7014e | 2061 | prev_opcode_id = opcode->id; |
93378652 DD |
2062 | po0 = omap; |
2063 | } | |
2064 | #endif | |
2065 | ||
4f8d4a38 DD |
2066 | return RX_MAKE_STEPPED (); |
2067 | } | |
93378652 DD |
2068 | |
2069 | #ifdef CYCLE_STATS | |
2070 | void | |
2071 | reset_pipeline_stats (void) | |
2072 | { | |
2073 | memset (cycles_per_id, 0, sizeof(cycles_per_id)); | |
2074 | memset (times_per_id, 0, sizeof(times_per_id)); | |
2075 | memory_stalls = 0; | |
2076 | register_stalls = 0; | |
2077 | branch_stalls = 0; | |
2078 | branch_alignment_stalls = 0; | |
2079 | fast_returns = 0; | |
2080 | memset (times_per_pair, 0, sizeof(times_per_pair)); | |
2081 | running_benchmark = 1; | |
2082 | ||
2083 | benchmark_start_cycle = regs.cycle_count; | |
2084 | } | |
2085 | ||
2086 | void | |
2087 | halt_pipeline_stats (void) | |
2088 | { | |
2089 | running_benchmark = 0; | |
2090 | benchmark_end_cycle = regs.cycle_count; | |
2091 | } | |
2092 | #endif | |
2093 | ||
2094 | void | |
2095 | pipeline_stats (void) | |
2096 | { | |
2097 | #ifdef CYCLE_STATS | |
2098 | int i, o1; | |
2099 | int p, p1; | |
2100 | #endif | |
2101 | ||
2102 | #ifdef CYCLE_ACCURATE | |
2103 | if (verbose == 1) | |
2104 | { | |
2105 | printf ("cycles: %llu\n", regs.cycle_count); | |
2106 | return; | |
2107 | } | |
2108 | ||
2109 | printf ("cycles: %13s\n", comma (regs.cycle_count)); | |
2110 | #endif | |
2111 | ||
2112 | #ifdef CYCLE_STATS | |
2113 | if (benchmark_start_cycle) | |
2114 | printf ("bmark: %13s\n", comma (benchmark_end_cycle - benchmark_start_cycle)); | |
2115 | ||
2116 | printf("\n"); | |
2117 | for (i = 0; i < N_RXO; i++) | |
2118 | for (o1 = 0; o1 < N_MAP; o1 ++) | |
2119 | if (times_per_id[i][o1]) | |
2120 | printf("%13s %13s %7.2f %s %s\n", | |
2121 | comma (cycles_per_id[i][o1]), | |
2122 | comma (times_per_id[i][o1]), | |
2123 | (double)cycles_per_id[i][o1] / times_per_id[i][o1], | |
2124 | op_cache_string(o1), | |
2125 | id_names[i]+4); | |
2126 | ||
2127 | printf("\n"); | |
2128 | for (p = 0; p < N_RXO; p ++) | |
2129 | for (p1 = 0; p1 < N_MAP; p1 ++) | |
2130 | for (i = 0; i < N_RXO; i ++) | |
2131 | for (o1 = 0; o1 < N_MAP; o1 ++) | |
2132 | if (times_per_pair[p][p1][i][o1]) | |
2133 | { | |
2134 | printf("%13s %s %-9s -> %s %s\n", | |
2135 | comma (times_per_pair[p][p1][i][o1]), | |
2136 | op_cache_string(p1), | |
2137 | id_names[p]+4, | |
2138 | op_cache_string(o1), | |
2139 | id_names[i]+4); | |
2140 | } | |
2141 | ||
2142 | printf("\n"); | |
2143 | printf("%13s memory stalls\n", comma (memory_stalls)); | |
2144 | printf("%13s register stalls\n", comma (register_stalls)); | |
2145 | printf("%13s branches taken (non-return)\n", comma (branch_stalls)); | |
2146 | printf("%13s branch alignment stalls\n", comma (branch_alignment_stalls)); | |
2147 | printf("%13s fast returns\n", comma (fast_returns)); | |
2148 | #endif | |
2149 | } |