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1/*\r
2 * PicoDrive\r
3 * (c) Copyright Dave, 2004\r
4 * (C) notaz, 2006-2009\r
5 *\r
6 * This work is licensed under the terms of MAME license.\r
7 * See COPYING file in the top-level directory.\r
8 */\r
9\r
10#include "pico_int.h"\r
11#include "memory.h"\r
12\r
13/* context */\r
14// Cyclone 68000\r
15#ifdef EMU_C68K\r
16struct Cyclone PicoCpuCM68k;\r
17#endif\r
18// MUSASHI 68000\r
19#ifdef EMU_M68K\r
20m68ki_cpu_core PicoCpuMM68k;\r
21#endif\r
22// FAME 68000\r
23#ifdef EMU_F68K\r
24M68K_CONTEXT PicoCpuFM68k;\r
25#endif\r
26\r
27\r
28static int do_ack(int level)\r
29{\r
30 struct PicoVideo *pv = &Pico.video;\r
31\r
32 elprintf(EL_INTS, "%cack: @ %06x [%u], p=%02x",\r
33 level == 6 ? 'v' : 'h', SekPc, SekCyclesDone(), pv->pending_ints);\r
34 // the VDP doesn't look at the 68k level\r
35 if (pv->pending_ints & pv->reg[1] & 0x20) {\r
36 pv->pending_ints &= ~0x20;\r
37 pv->status &= ~SR_F;\r
38 if (pv->reg[0] & pv->pending_ints & 0x10)\r
39 return pv->hint_irq;\r
40 }\r
41 else if (pv->pending_ints & pv->reg[0] & 0x10)\r
42 pv->pending_ints &= ~0x10;\r
43\r
44 return (PicoIn.AHW & PAHW_PICO ? PicoPicoIrqAck(level) : 0);\r
45}\r
46\r
47/* callbacks */\r
48#ifdef EMU_C68K\r
49// interrupt acknowledgment\r
50static int SekIntAck(int level)\r
51{\r
52 PicoCpuCM68k.irq = do_ack(level);\r
53 return CYCLONE_INT_ACK_AUTOVECTOR;\r
54}\r
55\r
56static void SekResetAck(void)\r
57{\r
58 elprintf(EL_ANOMALY, "Reset encountered @ %06x", SekPc);\r
59}\r
60\r
61static int SekUnrecognizedOpcode()\r
62{\r
63 unsigned int pc;\r
64 pc = SekPc;\r
65 elprintf(EL_ANOMALY, "Unrecognized Opcode @ %06x", pc);\r
66 // see if we are still in a mapped region\r
67 pc &= 0x00ffffff;\r
68 if (map_flag_set(m68k_read16_map[pc >> M68K_MEM_SHIFT])) {\r
69 elprintf(EL_STATUS|EL_ANOMALY, "m68k crash @%06x", pc);\r
70 PicoCpuCM68k.cycles = 0;\r
71 PicoCpuCM68k.state_flags |= 1;\r
72 return 1;\r
73 }\r
74 // happened once - may happen again\r
75 SekFinishIdleDet();\r
76#ifdef EMU_M68K // debugging cyclone\r
77 {\r
78 extern int have_illegal;\r
79 have_illegal = 1;\r
80 }\r
81#endif\r
82 return 0;\r
83}\r
84#endif\r
85\r
86\r
87#ifdef EMU_M68K\r
88static int SekIntAckM68K(int level)\r
89{\r
90 CPU_INT_LEVEL = do_ack(level) << 8;\r
91 return M68K_INT_ACK_AUTOVECTOR;\r
92}\r
93\r
94static int SekTasCallback(void)\r
95{\r
96 return 0; // no writeback\r
97}\r
98#endif\r
99\r
100\r
101#ifdef EMU_F68K\r
102static void SekIntAckF68K(unsigned level)\r
103{\r
104 PicoCpuFM68k.interrupts[0] = do_ack(level);\r
105}\r
106#endif\r
107\r
108\r
109PICO_INTERNAL void SekInit(void)\r
110{\r
111#ifdef EMU_C68K\r
112 CycloneInit();\r
113 memset(&PicoCpuCM68k,0,sizeof(PicoCpuCM68k));\r
114 PicoCpuCM68k.IrqCallback=SekIntAck;\r
115 PicoCpuCM68k.ResetCallback=SekResetAck;\r
116 PicoCpuCM68k.UnrecognizedCallback=SekUnrecognizedOpcode;\r
117 PicoCpuCM68k.flags=4; // Z set\r
118#endif\r
119#ifdef EMU_M68K\r
120 {\r
121 void *oldcontext = m68ki_cpu_p;\r
122 m68k_set_context(&PicoCpuMM68k);\r
123 m68k_set_cpu_type(M68K_CPU_TYPE_68000);\r
124 m68k_init();\r
125 m68k_set_int_ack_callback(SekIntAckM68K);\r
126 m68k_set_tas_instr_callback(SekTasCallback);\r
127 //m68k_pulse_reset();\r
128 m68k_set_context(oldcontext);\r
129 }\r
130#endif\r
131#ifdef EMU_F68K\r
132 memset(&PicoCpuFM68k, 0, sizeof(PicoCpuFM68k));\r
133 fm68k_init();\r
134 PicoCpuFM68k.iack_handler = SekIntAckF68K;\r
135 PicoCpuFM68k.sr = 0x2704; // Z flag\r
136#endif\r
137}\r
138\r
139\r
140// Reset the 68000:\r
141PICO_INTERNAL int SekReset(void)\r
142{\r
143#ifdef EMU_C68K\r
144 CycloneReset(&PicoCpuCM68k);\r
145#endif\r
146#ifdef EMU_M68K\r
147 m68k_set_context(&PicoCpuMM68k); // if we ever reset m68k, we always need it's context to be set\r
148 m68ki_cpu.sp[0]=0;\r
149 m68k_set_irq(0);\r
150 m68k_pulse_reset();\r
151 REG_USP = 0; // ?\r
152#endif\r
153#ifdef EMU_F68K\r
154 fm68k_reset(&PicoCpuFM68k);\r
155#endif\r
156\r
157 return 0;\r
158}\r
159\r
160void SekStepM68k(void)\r
161{\r
162 Pico.t.m68c_aim = Pico.t.m68c_cnt + 1;\r
163#if defined(EMU_CORE_DEBUG)\r
164 Pico.t.m68c_cnt += CM_compareRun(1, 0);\r
165#elif defined(EMU_C68K)\r
166 PicoCpuCM68k.cycles=1;\r
167 CycloneRun(&PicoCpuCM68k);\r
168 Pico.t.m68c_cnt += 1 - PicoCpuCM68k.cycles;\r
169#elif defined(EMU_M68K)\r
170 Pico.t.m68c_cnt += m68k_execute(1);\r
171#elif defined(EMU_F68K)\r
172 Pico.t.m68c_cnt += fm68k_emulate(&PicoCpuFM68k, 1, 0);\r
173#endif\r
174}\r
175\r
176PICO_INTERNAL void SekSetRealTAS(int use_real)\r
177{\r
178#ifdef EMU_C68K\r
179 CycloneSetRealTAS(use_real);\r
180#endif\r
181#ifdef EMU_F68K\r
182 // TODO\r
183#endif\r
184}\r
185\r
186// Pack the cpu into a common format:\r
187// XXX: rename\r
188PICO_INTERNAL void SekPackCpu(unsigned char *cpu, int is_sub)\r
189{\r
190#if defined(EMU_C68K)\r
191 struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
192 memcpy(cpu,context->d,0x40);\r
193 *(u32 *)(cpu+0x40)=context->pc-context->membase;\r
194 *(u32 *)(cpu+0x44)=CycloneGetSr(context);\r
195 *(u32 *)(cpu+0x48)=context->osp;\r
196 cpu[0x4c] = context->irq;\r
197 cpu[0x4d] = context->state_flags & 1;\r
198#elif defined(EMU_M68K)\r
199 void *oldcontext = m68ki_cpu_p;\r
200 m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
201 memcpy(cpu,m68ki_cpu_p->dar,0x40);\r
202 *(u32 *)(cpu+0x40)=m68ki_cpu_p->pc;\r
203 *(u32 *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r
204 *(u32 *)(cpu+0x48)=m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET];\r
205 cpu[0x4c] = CPU_INT_LEVEL>>8;\r
206 cpu[0x4d] = CPU_STOPPED;\r
207 m68k_set_context(oldcontext);\r
208#elif defined(EMU_F68K)\r
209 M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
210 memcpy(cpu,context->dreg,0x40);\r
211 *(u32 *)(cpu+0x40)=context->pc;\r
212 *(u32 *)(cpu+0x44)=context->sr;\r
213 *(u32 *)(cpu+0x48)=context->asp;\r
214 cpu[0x4c] = context->interrupts[0];\r
215 cpu[0x4d] = (context->execinfo & FM68K_HALTED) ? 1 : 0;\r
216#endif\r
217\r
218 if (is_sub) {\r
219 *(u32 *)(cpu+0x50) = SekCycleCntS68k;\r
220 *(s16 *)(cpu+0x4e) = SekCycleCntS68k - SekCycleAimS68k;\r
221 } else {\r
222 *(u32 *)(cpu+0x50) = Pico.t.m68c_cnt;\r
223 *(s16 *)(cpu+0x4e) = Pico.t.m68c_cnt - Pico.t.m68c_aim;\r
224 *(u16 *)(cpu+0x54) = Pico.t.refresh_delay;\r
225 *(u16 *)(cpu+0x56) = Pico.t.z80_buscycles;\r
226 }\r
227}\r
228\r
229PICO_INTERNAL void SekUnpackCpu(const unsigned char *cpu, int is_sub)\r
230{\r
231#if defined(EMU_C68K)\r
232 struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
233 CycloneSetSr(context, *(u32 *)(cpu+0x44));\r
234 context->osp=*(u32 *)(cpu+0x48);\r
235 memcpy(context->d,cpu,0x40);\r
236 context->membase = 0;\r
237 context->pc = *(u32 *)(cpu+0x40);\r
238 CycloneUnpack(context, NULL); // rebase PC\r
239 context->irq = cpu[0x4c];\r
240 context->state_flags = 0;\r
241 if (cpu[0x4d])\r
242 context->state_flags |= 1;\r
243#elif defined(EMU_M68K)\r
244 void *oldcontext = m68ki_cpu_p;\r
245 m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
246 m68k_set_reg(M68K_REG_SR, *(u32 *)(cpu+0x44));\r
247 memcpy(m68ki_cpu_p->dar,cpu,0x40);\r
248 m68ki_cpu_p->pc=*(u32 *)(cpu+0x40);\r
249 m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET]=*(u32 *)(cpu+0x48);\r
250 CPU_INT_LEVEL = cpu[0x4c] << 8;\r
251 CPU_STOPPED = cpu[0x4d];\r
252 m68k_set_context(oldcontext);\r
253#elif defined(EMU_F68K)\r
254 M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
255 memcpy(context->dreg,cpu,0x40);\r
256 context->pc =*(u32 *)(cpu+0x40);\r
257 context->sr =*(u32 *)(cpu+0x44);\r
258 context->asp=*(u32 *)(cpu+0x48);\r
259 context->interrupts[0] = cpu[0x4c];\r
260 context->execinfo &= ~FM68K_HALTED;\r
261 if (cpu[0x4d]&1) context->execinfo |= FM68K_HALTED;\r
262#endif\r
263 if (is_sub) {\r
264 SekCycleCntS68k = *(u32 *)(cpu+0x50);\r
265 SekCycleAimS68k = SekCycleCntS68k - *(s16 *)(cpu+0x4e);\r
266 } else {\r
267 Pico.t.m68c_cnt = *(u32 *)(cpu+0x50);\r
268 Pico.t.m68c_aim = Pico.t.m68c_cnt - *(s16 *)(cpu+0x4e);\r
269 Pico.t.refresh_delay = *(u16 *)(cpu+0x54);\r
270 Pico.t.z80_buscycles = *(u16 *)(cpu+0x56);\r
271 }\r
272}\r
273\r
274\r
275/* idle loop detection, not to be used in CD mode */\r
276#ifdef EMU_C68K\r
277#include <cpu/cyclone/tools/idle.h>\r
278#endif\r
279\r
280static unsigned short **idledet_ptrs = NULL;\r
281static int idledet_count = 0, idledet_bads = 0;\r
282static int idledet_start_frame = 0;\r
283\r
284#if 0\r
285#define IDLE_STATS 1\r
286unsigned int idlehit_addrs[128], idlehit_counts[128];\r
287\r
288void SekRegisterIdleHit(unsigned int pc)\r
289{\r
290 int i;\r
291 for (i = 0; i < 127 && idlehit_addrs[i]; i++) {\r
292 if (idlehit_addrs[i] == pc) {\r
293 idlehit_counts[i]++;\r
294 return;\r
295 }\r
296 }\r
297 idlehit_addrs[i] = pc;\r
298 idlehit_counts[i] = 1;\r
299 idlehit_addrs[i+1] = 0;\r
300}\r
301#endif\r
302\r
303void SekInitIdleDet(void)\r
304{\r
305 idledet_count = idledet_bads = 0;\r
306 idledet_start_frame = Pico.m.frame_count + 360;\r
307#ifdef IDLE_STATS\r
308 idlehit_addrs[0] = 0;\r
309#endif\r
310\r
311#ifdef EMU_C68K\r
312 CycloneInitIdle();\r
313#endif\r
314#ifdef EMU_F68K\r
315 fm68k_idle_install();\r
316#endif\r
317}\r
318\r
319int SekIsIdleReady(void)\r
320{\r
321 return (Pico.m.frame_count >= idledet_start_frame);\r
322}\r
323\r
324int SekIsIdleCode(unsigned short *dst, int bytes)\r
325{\r
326 // printf("SekIsIdleCode %04x %i\n", *dst, bytes);\r
327 if (idledet_count >= 0) switch (bytes)\r
328 {\r
329 case 2:\r
330 if ((*dst & 0xf000) != 0x6000) // not another branch\r
331 return 1;\r
332 break;\r
333 case 4:\r
334 if ( (*dst & 0xff3f) == 0x4a38 || // tst.x ($xxxx.w); tas ($xxxx.w)\r
335 (*dst & 0xc1ff) == 0x0038 || // move.x ($xxxx.w), dX\r
336 (*dst & 0xf13f) == 0xb038) // cmp.x ($xxxx.w), dX\r
337 return 1;\r
338 if (PicoIn.AHW & (PAHW_MCD|PAHW_32X))\r
339 break;\r
340 // with no addons, there should be no need to wait\r
341 // for byte change anywhere\r
342 if ( (*dst & 0xfff8) == 0x4a10 || // tst.b ($aX)\r
343 (*dst & 0xfff8) == 0x4a28) // tst.b ($xxxx,a0)\r
344 return 1;\r
345 break;\r
346 case 6:\r
347 if ( ((dst[1] & 0xe0) == 0xe0 && ( // RAM and\r
348 *dst == 0x4a39 || // tst.b ($xxxxxxxx)\r
349 *dst == 0x4a79 || // tst.w ($xxxxxxxx)\r
350 *dst == 0x4ab9 || // tst.l ($xxxxxxxx)\r
351 (*dst & 0xc1ff) == 0x0039 || // move.x ($xxxxxxxx), dX\r
352 (*dst & 0xf13f) == 0xb039))||// cmp.x ($xxxxxxxx), dX\r
353 *dst == 0x0838 || // btst $X, ($xxxx.w) [6 byte op]\r
354 (*dst & 0xffbf) == 0x0c38) // cmpi.{b,w} $X, ($xxxx.w)\r
355 return 1;\r
356 break;\r
357 case 8:\r
358 if ( ((dst[2] & 0xe0) == 0xe0 && ( // RAM and\r
359 *dst == 0x0839 || // btst $X, ($xxxxxxxx.w) [8 byte op]\r
360 (*dst & 0xffbf) == 0x0c39))||// cmpi.{b,w} $X, ($xxxxxxxx)\r
361 *dst == 0x0cb8) // cmpi.l $X, ($xxxx.w)\r
362 return 1;\r
363 break;\r
364 case 12:\r
365 if (PicoIn.AHW & (PAHW_MCD|PAHW_32X))\r
366 break;\r
367 if ( (*dst & 0xf1f8) == 0x3010 && // move.w (aX), dX\r
368 (dst[1]&0xf100) == 0x0000 && // arithmetic\r
369 (dst[3]&0xf100) == 0x0000) // arithmetic\r
370 return 1;\r
371 break;\r
372 }\r
373\r
374 return 0;\r
375}\r
376\r
377int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)\r
378{\r
379 int is_main68k = 1;\r
380 u16 *target;\r
381 uptr v;\r
382\r
383#if defined(EMU_C68K)\r
384 struct Cyclone *cyc = ctx;\r
385 is_main68k = cyc == &PicoCpuCM68k;\r
386 pc -= cyc->membase;\r
387#elif defined(EMU_F68K)\r
388 is_main68k = ctx == &PicoCpuFM68k;\r
389#endif\r
390 pc &= ~0xff000000;\r
391 if (!(newop&0x200))\r
392 elprintf(EL_IDLE, "idle: patch %06x %04x %04x %c %c #%i", pc, oldop, newop,\r
393 (newop&0x200)?'n':'y', is_main68k?'m':'s', idledet_count);\r
394\r
395 // XXX: probably shouldn't patch RAM too\r
396 if (is_main68k)\r
397 v = m68k_read16_map[pc >> M68K_MEM_SHIFT];\r
398 else\r
399 v = s68k_read16_map[pc >> M68K_MEM_SHIFT];\r
400 if (~v & ~((uptr)-1LL >> 1)) // MSB clear?\r
401 target = (u16 *)((v << 1) + pc);\r
402 else {\r
403 if (++idledet_bads > 128)\r
404 return 2; // remove detector\r
405 return 1; // don't patch\r
406 }\r
407\r
408 if (!idledet_ptrs || (idledet_count & 0x1ff) == 0) {\r
409 unsigned short **tmp;\r
410 tmp = realloc(idledet_ptrs, (idledet_count+0x200) * sizeof(tmp[0]));\r
411 if (tmp == NULL)\r
412 return 1;\r
413 idledet_ptrs = tmp;\r
414 }\r
415\r
416 idledet_ptrs[idledet_count++] = target;\r
417\r
418 return 0;\r
419}\r
420\r
421void SekFinishIdleDet(void)\r
422{\r
423 if (idledet_count < 0)\r
424 return;\r
425#ifdef EMU_C68K\r
426 CycloneFinishIdle();\r
427#endif\r
428#ifdef EMU_F68K\r
429 fm68k_idle_remove();\r
430#endif\r
431 while (idledet_count > 0)\r
432 {\r
433 unsigned short *op = idledet_ptrs[--idledet_count];\r
434 if ((*op & 0xfd00) == 0x7100)\r
435 *op &= 0xff, *op |= 0x6600;\r
436 else if ((*op & 0xfd00) == 0x7500)\r
437 *op &= 0xff, *op |= 0x6700;\r
438 else if ((*op & 0xfd00) == 0x7d00)\r
439 *op &= 0xff, *op |= 0x6000;\r
440 else\r
441 elprintf(EL_STATUS|EL_IDLE, "idle: don't know how to restore %04x", *op);\r
442 }\r
443\r
444 idledet_count = -1;\r
445 if (idledet_ptrs)\r
446 free(idledet_ptrs);\r
447 idledet_ptrs = NULL;\r
448}\r
449\r
450\r
451#if defined(CPU_CMP_R) || defined(CPU_CMP_W)\r
452#include "debug.h"\r
453\r
454struct ref_68k {\r
455 u32 dar[16];\r
456 u32 pc;\r
457 u32 sr;\r
458 u32 cycles;\r
459 u32 pc_prev;\r
460};\r
461struct ref_68k ref_68ks[2];\r
462static int current_68k;\r
463\r
464void SekTrace(int is_s68k)\r
465{\r
466 struct ref_68k *x68k = &ref_68ks[is_s68k];\r
467 u32 pc = is_s68k ? SekPcS68k : SekPc;\r
468 u32 sr = is_s68k ? SekSrS68k : SekSr;\r
469 u32 cycles = is_s68k ? SekCycleCntS68k : Pico.t.m68c_cnt;\r
470 u32 r;\r
471 u8 cmd;\r
472#ifdef CPU_CMP_W\r
473 int i;\r
474\r
475 if (is_s68k != current_68k) {\r
476 current_68k = is_s68k;\r
477 cmd = CTL_68K_SLAVE | current_68k;\r
478 tl_write(&cmd, sizeof(cmd));\r
479 }\r
480 if (pc != x68k->pc) {\r
481 x68k->pc = pc;\r
482 tl_write_uint(CTL_68K_PC, x68k->pc);\r
483 }\r
484 if (sr != x68k->sr) {\r
485 x68k->sr = sr;\r
486 tl_write_uint(CTL_68K_SR, x68k->sr);\r
487 }\r
488 for (i = 0; i < 16; i++) {\r
489 r = is_s68k ? SekDarS68k(i) : SekDar(i);\r
490 if (r != x68k->dar[i]) {\r
491 x68k->dar[i] = r;\r
492 tl_write_uint(CTL_68K_R + i, r);\r
493 }\r
494 }\r
495 tl_write_uint(CTL_68K_CYCLES, cycles);\r
496#else\r
497 int i, bad = 0;\r
498\r
499 while (1)\r
500 {\r
501 int ret = tl_read(&cmd, sizeof(cmd));\r
502 if (ret == 0) {\r
503 elprintf(EL_STATUS, "EOF");\r
504 exit(1);\r
505 }\r
506 switch (cmd) {\r
507 case CTL_68K_SLAVE:\r
508 case CTL_68K_SLAVE + 1:\r
509 current_68k = cmd & 1;\r
510 break;\r
511 case CTL_68K_PC:\r
512 tl_read_uint(&x68k->pc);\r
513 break;\r
514 case CTL_68K_SR:\r
515 tl_read_uint(&x68k->sr);\r
516 break;\r
517 case CTL_68K_CYCLES:\r
518 tl_read_uint(&x68k->cycles);\r
519 goto breakloop;\r
520 default:\r
521 if (CTL_68K_R <= cmd && cmd < CTL_68K_R + 0x10)\r
522 tl_read_uint(&x68k->dar[cmd - CTL_68K_R]);\r
523 else\r
524 elprintf(EL_STATUS, "invalid cmd: %02x", cmd);\r
525 }\r
526 }\r
527\r
528breakloop:\r
529 if (is_s68k != current_68k) {\r
530 printf("bad 68k: %d %d\n", is_s68k, current_68k);\r
531 bad = 1;\r
532 }\r
533 if (cycles != x68k->cycles) {\r
534 printf("bad cycles: %u %u\n", cycles, x68k->cycles);\r
535 bad = 1;\r
536 }\r
537 if ((pc ^ x68k->pc) & 0xffffff) {\r
538 printf("bad PC: %08x %08x\n", pc, x68k->pc);\r
539 bad = 1;\r
540 }\r
541 if (sr != x68k->sr) {\r
542 printf("bad SR: %03x %03x\n", sr, x68k->sr);\r
543 bad = 1;\r
544 }\r
545 for (i = 0; i < 16; i++) {\r
546 r = is_s68k ? SekDarS68k(i) : SekDar(i);\r
547 if (r != x68k->dar[i]) {\r
548 printf("bad %c%d: %08x %08x\n", i < 8 ? 'D' : 'A', i & 7,\r
549 r, x68k->dar[i]);\r
550 bad = 1;\r
551 }\r
552 }\r
553 if (bad) {\r
554 for (i = 0; i < 8; i++)\r
555 printf("D%d: %08x A%d: %08x\n", i, x68k->dar[i],\r
556 i, x68k->dar[i + 8]);\r
557 printf("PC: %08x, %08x\n", x68k->pc, x68k->pc_prev);\r
558 printf("SR: %04x\n", x68k->sr);\r
559\r
560 PDebugDumpMem();\r
561 exit(1);\r
562 }\r
563 x68k->pc_prev = x68k->pc;\r
564#endif\r
565}\r
566#endif // CPU_CMP_*\r
567\r
568#if defined(EMU_M68K) && M68K_INSTRUCTION_HOOK == OPT_SPECIFY_HANDLER\r
569static unsigned char op_flags[0x400000/2] = { 0, };\r
570static int atexit_set = 0;\r
571\r
572static void make_idc(void)\r
573{\r
574 FILE *f = fopen("idc.idc", "w");\r
575 int i;\r
576 if (!f) return;\r
577 fprintf(f, "#include <idc.idc>\nstatic main() {\n");\r
578 for (i = 0; i < 0x400000/2; i++)\r
579 if (op_flags[i] != 0)\r
580 fprintf(f, " MakeCode(0x%06x);\n", i*2);\r
581 fprintf(f, "}\n");\r
582 fclose(f);\r
583}\r
584\r
585void instruction_hook(void)\r
586{\r
587 if (!atexit_set) {\r
588 atexit(make_idc);\r
589 atexit_set = 1;\r
590 }\r
591 if (REG_PC < 0x400000)\r
592 op_flags[REG_PC/2] = 1;\r
593}\r
594#endif\r
595\r
596// vim:shiftwidth=2:ts=2:expandtab\r
fast MegaDrive/MegaCD/32X emulator