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libretro: pass required arg to VirtualProtect
[picodrive.git] / platform / libretro / libretro.c
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7612bf90 1/*
2 * libretro core glue for PicoDrive
3 * (C) notaz, 2013
4 * (C) aliaspider, 2016
5 * (C) Daniel De Matteis, 2013
6 *
7 * This work is licensed under the terms of MAME license.
8 * See COPYING file in the top-level directory.
9 */
10
11#define _GNU_SOURCE 1 // mremap
12#include <stdio.h>
35f2b65e 13#include <stdlib.h>
7612bf90 14#include <stdarg.h>
15#include <string.h>
16#ifndef _WIN32
17#ifndef NO_MMAP
18#include <sys/mman.h>
19#endif
20#else
21#include <io.h>
22#include <windows.h>
23#include <sys/types.h>
24#endif
25#include <errno.h>
26#ifdef __MACH__
27#include <libkern/OSCacheControl.h>
28#endif
29
30#ifdef _3DS
31#include "3ds/3ds_utils.h"
32#define MEMOP_MAP 4
33#define MEMOP_UNMAP 5
34#define MEMOP_PROT 6
35
36int svcDuplicateHandle(unsigned int* out, unsigned int original);
37int svcCloseHandle(unsigned int handle);
38int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
39 unsigned int size, unsigned int type, unsigned int perm);
40void* linearMemAlign(size_t size, size_t alignment);
41void linearFree(void* mem);
42
43static int ctr_svchack_successful = 0;
44
45#elif defined(VITA)
46#define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
47
48#include <psp2/kernel/sysmem.h>
49static int sceBlock;
50int getVMBlock();
51int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
52
53#endif
54
55#include <pico/pico_int.h>
56#include <pico/state.h>
57#include <pico/patch.h>
58#include "../common/input_pico.h"
59#include "../common/version.h"
60#include "libretro.h"
61
62static retro_log_printf_t log_cb;
63static retro_video_refresh_t video_cb;
64static retro_input_poll_t input_poll_cb;
65static retro_input_state_t input_state_cb;
66static retro_environment_t environ_cb;
67static retro_audio_sample_batch_t audio_batch_cb;
68
69#define VOUT_MAX_WIDTH 320
70#define VOUT_MAX_HEIGHT 240
71
72static const float VOUT_PAR = 0.0;
73static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
74static const float VOUT_CRT = (224.0f * 1.29911f);
75
76bool show_overscan = false;
77
78static void *vout_buf;
79static int vout_width, vout_height, vout_offset;
80static float user_vout_width = 0.0;
81
82#ifdef _MSC_VER
83static short sndBuffer[2*44100/50];
84#else
85static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
86#endif
87
88static void snd_write(int len);
89
90#ifdef _WIN32
91#define SLASH '\\'
92#else
93#define SLASH '/'
94#endif
95
96/* functions called by the core */
97
98void cache_flush_d_inval_i(void *start, void *end)
99{
100#ifdef __arm__
101 size_t len = (char *)end - (char *)start;
df925153 102 (void)len;
7612bf90 103#if defined(__BLACKBERRY_QNX__)
104 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
105#elif defined(__MACH__)
106 sys_dcache_flush(start, len);
107 sys_icache_invalidate(start, len);
108#elif defined(_3DS)
109 ctr_flush_invalidate_cache();
110#elif defined(VITA)
111 sceKernelSyncVMDomain(sceBlock, start, len);
112#else
113 __clear_cache(start, end);
114#endif
115#endif
116}
117
118#ifdef _WIN32
119/* mmap() replacement for Windows
120 *
121 * Author: Mike Frysinger <vapier@gentoo.org>
122 * Placed into the public domain
123 */
124
125/* References:
126 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
127 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
128 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
129 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
130 */
131
132#define PROT_READ 0x1
133#define PROT_WRITE 0x2
134/* This flag is only available in WinXP+ */
135#ifdef FILE_MAP_EXECUTE
136#define PROT_EXEC 0x4
137#else
138#define PROT_EXEC 0x0
139#define FILE_MAP_EXECUTE 0
140#endif
141
142#define MAP_SHARED 0x01
143#define MAP_PRIVATE 0x02
144#define MAP_ANONYMOUS 0x20
145#define MAP_ANON MAP_ANONYMOUS
146#define MAP_FAILED ((void *) -1)
147
148#ifdef __USE_FILE_OFFSET64
149# define DWORD_HI(x) (x >> 32)
150# define DWORD_LO(x) ((x) & 0xffffffff)
151#else
152# define DWORD_HI(x) (0)
153# define DWORD_LO(x) (x)
154#endif
155
156static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
157{
158 uint32_t flProtect, dwDesiredAccess;
159 off_t end;
160 HANDLE mmap_fd, h;
161 void *ret;
162
163 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
164 return MAP_FAILED;
165 if (fd == -1) {
166 if (!(flags & MAP_ANON) || offset)
167 return MAP_FAILED;
168 } else if (flags & MAP_ANON)
169 return MAP_FAILED;
170
171 if (prot & PROT_WRITE) {
172 if (prot & PROT_EXEC)
173 flProtect = PAGE_EXECUTE_READWRITE;
174 else
175 flProtect = PAGE_READWRITE;
176 } else if (prot & PROT_EXEC) {
177 if (prot & PROT_READ)
178 flProtect = PAGE_EXECUTE_READ;
179 else if (prot & PROT_EXEC)
180 flProtect = PAGE_EXECUTE;
181 } else
182 flProtect = PAGE_READONLY;
183
184 end = length + offset;
185
186 if (fd == -1)
187 mmap_fd = INVALID_HANDLE_VALUE;
188 else
189 mmap_fd = (HANDLE)_get_osfhandle(fd);
190 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
191 if (h == NULL)
192 return MAP_FAILED;
193
194 if (prot & PROT_WRITE)
195 dwDesiredAccess = FILE_MAP_WRITE;
196 else
197 dwDesiredAccess = FILE_MAP_READ;
198 if (prot & PROT_EXEC)
199 dwDesiredAccess |= FILE_MAP_EXECUTE;
200 if (flags & MAP_PRIVATE)
201 dwDesiredAccess |= FILE_MAP_COPY;
202 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
203 if (ret == NULL) {
204 CloseHandle(h);
205 ret = MAP_FAILED;
206 }
207 return ret;
208}
209
210static void munmap(void *addr, size_t length)
211{
212 UnmapViewOfFile(addr);
213 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
214}
215#elif defined(NO_MMAP)
216#define PROT_EXEC 0x04
217#define MAP_FAILED 0
218#define PROT_READ 0
219#define PROT_WRITE 0
220#define MAP_PRIVATE 0
221#define MAP_ANONYMOUS 0
222
223void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
224{
225 return malloc(len);
226}
227
228void munmap(void *base_addr, size_t len)
229{
230 free(base_addr);
231}
232
233int mprotect(void *addr, size_t len, int prot)
234{
235 /* stub - not really needed at this point since this codepath has no dynarecs */
236 return 0;
237}
238
239#endif
240
241#ifndef MAP_ANONYMOUS
242#define MAP_ANONYMOUS MAP_ANON
243#endif
244
245#ifdef _3DS
246typedef struct
247{
248 unsigned int requested_map;
249 void* buffer;
250}pico_mmap_t;
251
252pico_mmap_t pico_mmaps[] = {
253 {0x02000000, 0},
254 {0x06000000, 0},
255 {NULL, 0}
256};
257
258void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
259{
260 (void)is_fixed;
261
262 if (ctr_svchack_successful)
263 {
264 pico_mmap_t* pico_mmap;
265
266 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
267 {
268 if ((pico_mmap->requested_map == addr))
269 {
270 unsigned int ptr_aligned, tmp;
271 unsigned int currentHandle;
272 unsigned int perm = 0b011;
273
274 if (need_exec)
275 perm = 0b111;
276
277 size = (size + 0xFFF) & ~0xFFF;
278 pico_mmap->buffer = malloc(size + 0x1000);
279 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
280
281 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
282
283 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
284 {
285 if (log_cb)
286 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
287 exit(1);
288 }
289
290 svcCloseHandle(currentHandle);
291 return (void*)pico_mmap->requested_map;
292 }
293 }
294 }
295
296 return malloc(size);
297}
298
299void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
300{
301 if (ctr_svchack_successful)
302 {
303 pico_mmap_t* pico_mmap;
304
305 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
306 {
307 if ((pico_mmap->requested_map == (unsigned int)ptr))
308 {
309 unsigned int ptr_aligned;
310 unsigned int currentHandle;
311 void* tmp;
312
313 oldsize = (oldsize + 0xFFF) & ~0xFFF;
314 newsize = (newsize + 0xFFF) & ~0xFFF;
315 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
316
317 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
318
319 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
320
321 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
322 if(!tmp)
323 return NULL;
324
325 pico_mmap->buffer = tmp;
326 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
327
328 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
329
330 svcCloseHandle(currentHandle);
331
332 return ptr;
333 }
334 }
335 }
336
337 return realloc(ptr, newsize);
338
339}
340void plat_munmap(void *ptr, size_t size)
341{
342 if (ctr_svchack_successful)
343 {
344 pico_mmap_t* pico_mmap;
345
346 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
347 {
348 if ((pico_mmap->requested_map == (unsigned int)ptr))
349 {
350 unsigned int ptr_aligned;
351 unsigned int currentHandle;
352
353 size = (size + 0xFFF) & ~0xFFF;
354 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
355
356 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
357
358 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
359
360 svcCloseHandle(currentHandle);
361
362 free(pico_mmap->buffer);
363 pico_mmap->buffer = NULL;
364 return;
365 }
366 }
367 }
368
369 free(ptr);
370}
371
372#else
373void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
374{
375 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
376 void *req, *ret;
377
378 req = (void *)addr;
379 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
380 if (ret == MAP_FAILED) {
381 if (log_cb)
382 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
383 return NULL;
384 }
385
386 if (addr != 0 && ret != (void *)addr) {
387 if (log_cb)
388 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
389 addr, ret);
390
391 if (is_fixed) {
392 munmap(ret, size);
393 return NULL;
394 }
395 }
396
397 return ret;
398}
399
400void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
401{
402#ifdef __linux__
403 void *ret = mremap(ptr, oldsize, newsize, 0);
404 if (ret == MAP_FAILED)
405 return NULL;
406
407 return ret;
408#else
409 void *tmp, *ret;
410 size_t preserve_size;
411
412 preserve_size = oldsize;
413 if (preserve_size > newsize)
414 preserve_size = newsize;
415 tmp = malloc(preserve_size);
416 if (tmp == NULL)
417 return NULL;
418 memcpy(tmp, ptr, preserve_size);
419
420 munmap(ptr, oldsize);
421 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
422 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
423 if (ret == MAP_FAILED) {
424 free(tmp);
425 return NULL;
426 }
427 memcpy(ret, tmp, preserve_size);
428 free(tmp);
429 return ret;
430#endif
431}
432
433void plat_munmap(void *ptr, size_t size)
434{
435 if (ptr != NULL)
436 munmap(ptr, size);
437}
438#endif
439
df925153 440// if NULL is returned, static buffer is used
441void *plat_mem_get_for_drc(size_t size)
442{
443 void *mem = NULL;
444#ifdef VITA
445 sceKernelGetMemBlockBase(sceBlock, &mem);
446#endif
447 return mem;
448}
449
7612bf90 450int plat_mem_set_exec(void *ptr, size_t size)
451{
df925153 452 int ret = -1;
7612bf90 453#ifdef _WIN32
a0b95da1 454 DWORD oldProtect = 0;
455 ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, &oldProtect);
7612bf90 456 if (ret == 0 && log_cb)
df925153 457 log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
458 GetLastError());
7612bf90 459#elif defined(_3DS)
7612bf90 460 if (ctr_svchack_successful)
461 {
462 unsigned int currentHandle;
463 svcDuplicateHandle(&currentHandle, 0xFFFF8001);
464 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
465 size, MEMOP_PROT, 0b111);
466 svcCloseHandle(currentHandle);
467 ctr_flush_invalidate_cache();
468
469 }
470 else
471 {
472 if (log_cb)
473 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
474 exit(1);
475 }
476
477#elif defined(VITA)
df925153 478 ret = sceKernelOpenVMDomain();
7612bf90 479#else
df925153 480 ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
7612bf90 481 if (ret != 0 && log_cb)
482 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
483#endif
484 return ret;
485}
486
487void emu_video_mode_change(int start_line, int line_count, int is_32cols)
488{
24aab4da 489 struct retro_system_av_info av_info;
490
7612bf90 491 memset(vout_buf, 0, 320 * 240 * 2);
492 vout_width = is_32cols ? 256 : 320;
493 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
494 if (show_overscan == true) line_count += 16;
495 if (show_overscan == true) start_line -= 8;
496
497 vout_height = line_count;
498 vout_offset = vout_width * start_line;
499
500 // Update the geometry
7612bf90 501 retro_get_system_av_info(&av_info);
502 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
503}
504
505void emu_32x_startup(void)
506{
507}
508
509void lprintf(const char *fmt, ...)
510{
511 char buffer[256];
512 va_list ap;
513 va_start(ap, fmt);
514 vsprintf(buffer, fmt, ap);
515 /* TODO - add 'level' param for warning/error messages? */
516 if (log_cb)
517 log_cb(RETRO_LOG_INFO, "%s", buffer);
518 va_end(ap);
519}
520
521/* libretro */
522void retro_set_environment(retro_environment_t cb)
523{
524 static const struct retro_variable vars[] = {
525 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
526 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
527 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
528 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
529 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
7612bf90 530 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
531 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
35f2b65e 532 { "picodrive_overclk68k", "68k overclock; disabled|+25%|+50%|+75%|+100%|+200%|+400%" },
7612bf90 533#ifdef DRC_SH2
534 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
535#endif
536 { NULL, NULL },
537 };
538
539 environ_cb = cb;
540
541 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
542}
543
544void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
545void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
546void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
547void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
548void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
549
550unsigned retro_api_version(void)
551{
552 return RETRO_API_VERSION;
553}
554
555void retro_set_controller_port_device(unsigned port, unsigned device)
556{
557}
558
559void retro_get_system_info(struct retro_system_info *info)
560{
561 memset(info, 0, sizeof(*info));
562 info->library_name = "PicoDrive";
563#ifndef GIT_VERSION
564#define GIT_VERSION ""
565#endif
566 info->library_version = VERSION GIT_VERSION;
567 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
568 info->need_fullpath = true;
569}
570
571void retro_get_system_av_info(struct retro_system_av_info *info)
572{
24aab4da 573 float common_width;
574
7612bf90 575 memset(info, 0, sizeof(*info));
576 info->timing.fps = Pico.m.pal ? 50 : 60;
577 info->timing.sample_rate = 44100;
578 info->geometry.base_width = vout_width;
579 info->geometry.base_height = vout_height;
580 info->geometry.max_width = vout_width;
581 info->geometry.max_height = vout_height;
582
24aab4da 583 common_width = vout_width;
7612bf90 584 if (user_vout_width != 0)
585 common_width = user_vout_width;
586
587 info->geometry.aspect_ratio = common_width / vout_height;
588}
589
590/* savestates */
591struct savestate_state {
592 const char *load_buf;
593 char *save_buf;
594 size_t size;
595 size_t pos;
596};
597
598size_t state_read(void *p, size_t size, size_t nmemb, void *file)
599{
600 struct savestate_state *state = file;
601 size_t bsize = size * nmemb;
602
603 if (state->pos + bsize > state->size) {
604 if (log_cb)
605 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
606 state->pos + bsize, state->size);
607 bsize = state->size - state->pos;
608 if ((int)bsize <= 0)
609 return 0;
610 }
611
612 memcpy(p, state->load_buf + state->pos, bsize);
613 state->pos += bsize;
614 return bsize;
615}
616
617size_t state_write(void *p, size_t size, size_t nmemb, void *file)
618{
619 struct savestate_state *state = file;
620 size_t bsize = size * nmemb;
621
622 if (state->pos + bsize > state->size) {
623 if (log_cb)
624 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
625 state->pos + bsize, state->size);
626 bsize = state->size - state->pos;
627 if ((int)bsize <= 0)
628 return 0;
629 }
630
631 memcpy(state->save_buf + state->pos, p, bsize);
632 state->pos += bsize;
633 return bsize;
634}
635
636size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
637{
638 struct savestate_state *state = file;
639 size_t bsize = size * nmemb;
640
641 state->pos += bsize;
642 return bsize;
643}
644
645size_t state_eof(void *file)
646{
647 struct savestate_state *state = file;
648
649 return state->pos >= state->size;
650}
651
652int state_fseek(void *file, long offset, int whence)
653{
654 struct savestate_state *state = file;
655
656 switch (whence) {
657 case SEEK_SET:
658 state->pos = offset;
659 break;
660 case SEEK_CUR:
661 state->pos += offset;
662 break;
663 case SEEK_END:
664 state->pos = state->size + offset;
665 break;
666 }
667 return (int)state->pos;
668}
669
670/* savestate sizes vary wildly depending if cd/32x or
671 * carthw is active, so run the whole thing to get size */
672size_t retro_serialize_size(void)
673{
674 struct savestate_state state = { 0, };
675 int ret;
676
677 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
678 if (ret != 0)
679 return 0;
680
681 return state.pos;
682}
683
684bool retro_serialize(void *data, size_t size)
685{
686 struct savestate_state state = { 0, };
687 int ret;
688
689 state.save_buf = data;
690 state.size = size;
691 state.pos = 0;
692
693 ret = PicoStateFP(&state, 1, NULL, state_write,
694 NULL, state_fseek);
695 return ret == 0;
696}
697
698bool retro_unserialize(const void *data, size_t size)
699{
700 struct savestate_state state = { 0, };
701 int ret;
702
703 state.load_buf = data;
704 state.size = size;
705 state.pos = 0;
706
707 ret = PicoStateFP(&state, 0, state_read, NULL,
708 state_eof, state_fseek);
709 return ret == 0;
710}
711
712typedef struct patch
713{
714 unsigned int addr;
715 unsigned short data;
716 unsigned char comp;
717} patch;
718
719extern void decode(char *buff, patch *dest);
720extern uint16_t m68k_read16(uint32_t a);
721extern void m68k_write16(uint32_t a, uint16_t d);
722
723void retro_cheat_reset(void)
724{
725 int i=0;
726 unsigned int addr;
727
728 for (i = 0; i < PicoPatchCount; i++)
729 {
730 addr = PicoPatches[i].addr;
731 if (addr < Pico.romsize) {
732 if (PicoPatches[i].active)
733 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
734 } else {
735 if (PicoPatches[i].active)
736 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
737 }
738 }
739
740 PicoPatchUnload();
741}
742
743void retro_cheat_set(unsigned index, bool enabled, const char *code)
744{
745 patch pt;
746 int array_len = PicoPatchCount;
747 char codeCopy[256];
748 char *buff;
749
750 if (code=='\0') return;
751 strcpy(codeCopy,code);
752 buff = strtok(codeCopy,"+");
753
754 while (buff != NULL)
755 {
756 decode(buff, &pt);
757 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
758 {
759 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
760 return;
761 }
762
763 /* code was good, add it */
764 if (array_len < PicoPatchCount + 1)
765 {
766 void *ptr;
767 array_len *= 2;
768 array_len++;
769 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
770 if (ptr == NULL) {
771 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
772 return;
773 }
774 PicoPatches = ptr;
775 }
776 strcpy(PicoPatches[PicoPatchCount].code, buff);
777
778 PicoPatches[PicoPatchCount].active = enabled;
779 PicoPatches[PicoPatchCount].addr = pt.addr;
780 PicoPatches[PicoPatchCount].data = pt.data;
781 PicoPatches[PicoPatchCount].comp = pt.comp;
782 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
783 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
784 else
785 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
786 PicoPatchCount++;
787
788 buff = strtok(NULL,"+");
789 }
790}
791
792/* multidisk support */
793static bool disk_ejected;
794static unsigned int disk_current_index;
795static unsigned int disk_count;
796static struct disks_state {
797 char *fname;
798} disks[8];
799
800static bool disk_set_eject_state(bool ejected)
801{
802 // TODO?
803 disk_ejected = ejected;
804 return true;
805}
806
807static bool disk_get_eject_state(void)
808{
809 return disk_ejected;
810}
811
812static unsigned int disk_get_image_index(void)
813{
814 return disk_current_index;
815}
816
817static bool disk_set_image_index(unsigned int index)
818{
819 enum cd_img_type cd_type;
820 int ret;
821
822 if (index >= sizeof(disks) / sizeof(disks[0]))
823 return false;
824
825 if (disks[index].fname == NULL) {
826 if (log_cb)
827 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
828
829 // RetroArch specifies "no disk" with index == count,
830 // so don't fail here..
831 disk_current_index = index;
832 return true;
833 }
834
835 if (log_cb)
836 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
837 disks[index].fname);
838
839 ret = -1;
840 cd_type = PicoCdCheck(disks[index].fname, NULL);
841 if (cd_type != CIT_NOT_CD)
842 ret = cdd_load(disks[index].fname, cd_type);
843 if (ret != 0) {
844 if (log_cb)
845 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
846 return 0;
847 }
848
849 disk_current_index = index;
850 return true;
851}
852
853static unsigned int disk_get_num_images(void)
854{
855 return disk_count;
856}
857
858static bool disk_replace_image_index(unsigned index,
859 const struct retro_game_info *info)
860{
861 bool ret = true;
862
863 if (index >= sizeof(disks) / sizeof(disks[0]))
864 return false;
865
866 if (disks[index].fname != NULL)
867 free(disks[index].fname);
868 disks[index].fname = NULL;
869
870 if (info != NULL) {
871 disks[index].fname = strdup(info->path);
872 if (index == disk_current_index)
873 ret = disk_set_image_index(index);
874 }
875
876 return ret;
877}
878
879static bool disk_add_image_index(void)
880{
881 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
882 return false;
883
884 disk_count++;
885 return true;
886}
887
888static struct retro_disk_control_callback disk_control = {
889 disk_set_eject_state,
890 disk_get_eject_state,
891 disk_get_image_index,
892 disk_set_image_index,
893 disk_get_num_images,
894 disk_replace_image_index,
895 disk_add_image_index,
896};
897
898static void disk_tray_open(void)
899{
900 if (log_cb)
901 log_cb(RETRO_LOG_INFO, "cd tray open\n");
902 disk_ejected = 1;
903}
904
905static void disk_tray_close(void)
906{
907 if (log_cb)
908 log_cb(RETRO_LOG_INFO, "cd tray close\n");
909 disk_ejected = 0;
910}
911
912
913static const char * const biosfiles_us[] = {
914 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
915};
916static const char * const biosfiles_eu[] = {
917 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
918};
919static const char * const biosfiles_jp[] = {
920 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
921};
922
923static void make_system_path(char *buf, size_t buf_size,
924 const char *name, const char *ext)
925{
926 const char *dir = NULL;
927
928 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
929 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
930 }
931 else {
932 snprintf(buf, buf_size, "%s%s", name, ext);
933 }
934}
935
936static const char *find_bios(int *region, const char *cd_fname)
937{
938 const char * const *files;
939 static char path[256];
940 int i, count;
941 FILE *f = NULL;
942
943 if (*region == 4) { // US
944 files = biosfiles_us;
945 count = sizeof(biosfiles_us) / sizeof(char *);
946 } else if (*region == 8) { // EU
947 files = biosfiles_eu;
948 count = sizeof(biosfiles_eu) / sizeof(char *);
949 } else if (*region == 1 || *region == 2) {
950 files = biosfiles_jp;
951 count = sizeof(biosfiles_jp) / sizeof(char *);
952 } else {
953 return NULL;
954 }
955
956 for (i = 0; i < count; i++)
957 {
958 make_system_path(path, sizeof(path), files[i], ".bin");
959 f = fopen(path, "rb");
960 if (f != NULL)
961 break;
962
963 make_system_path(path, sizeof(path), files[i], ".zip");
964 f = fopen(path, "rb");
965 if (f != NULL)
966 break;
967 }
968
969 if (f != NULL) {
970 if (log_cb)
971 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
972 fclose(f);
973 return path;
974 }
975
976 return NULL;
977}
978
7612bf90 979bool retro_load_game(const struct retro_game_info *info)
980{
981 enum media_type_e media_type;
982 static char carthw_path[256];
983 size_t i;
984
985 struct retro_input_descriptor desc[] = {
986 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
987 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
988 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
989 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
992 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
993 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
994 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
995 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
996 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
997 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
998
999 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1000 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1001 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1002 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
1005 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1006 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1007 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1008 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1009 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1010 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1011
1012 { 0 },
1013 };
1014
1015 struct retro_input_descriptor desc_sms[] = {
1016 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1017 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1018 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1019 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1020 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1021 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1022 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1023
1024 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1025 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1026 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1027 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1028 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1029 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1030 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1031
1032 { 0 },
1033 };
1034
7612bf90 1035 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1036 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1037 if (log_cb)
1038 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1039 return false;
1040 }
1041
1042 if (info == NULL || info->path == NULL) {
1043 if (log_cb)
1044 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1045 return false;
1046 }
1047
1048 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1049 if (disks[i].fname != NULL) {
1050 free(disks[i].fname);
1051 disks[i].fname = NULL;
1052 }
1053 }
1054
1055 disk_current_index = 0;
1056 disk_count = 1;
1057 disks[0].fname = strdup(info->path);
1058
1059 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1060
1061 media_type = PicoLoadMedia(info->path, carthw_path,
1062 find_bios, NULL);
1063
1064 switch (media_type) {
1065 case PM_BAD_DETECT:
1066 if (log_cb)
1067 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1068 return false;
1069 case PM_BAD_CD:
1070 if (log_cb)
1071 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1072 return false;
1073 case PM_BAD_CD_NO_BIOS:
1074 if (log_cb)
1075 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1076 return false;
1077 case PM_ERROR:
1078 if (log_cb)
1079 log_cb(RETRO_LOG_ERROR, "Load error\n");
1080 return false;
1081 default:
1082 break;
1083 }
1084
1085 if (media_type == PM_MARK3)
1086 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1087 else
1088 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1089
1090 PicoLoopPrepare();
1091
6311a3ba 1092 PicoIn.writeSound = snd_write;
7612bf90 1093 memset(sndBuffer, 0, sizeof(sndBuffer));
6311a3ba 1094 PicoIn.sndOut = sndBuffer;
7612bf90 1095 PsndRerate(0);
1096
1097 return true;
1098}
1099
1100bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1101{
1102 return false;
1103}
1104
1105void retro_unload_game(void)
1106{
1107}
1108
1109unsigned retro_get_region(void)
1110{
1111 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1112}
1113
1114void *retro_get_memory_data(unsigned type)
1115{
1116 uint8_t* data;
1117
1118 switch(type)
1119 {
1120 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1121 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1122 data = Pico_mcd->bram;
1123 else
28a5b392 1124 data = Pico.sv.data;
7612bf90 1125 break;
1126 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1127 if (PicoIn.AHW & PAHW_SMS)
28a5b392 1128 data = PicoMem.zram;
7612bf90 1129 else
28a5b392 1130 data = PicoMem.ram;
7612bf90 1131 break;
1132 default:
1133 data = NULL;
1134 break;
1135 }
1136
1137 return data;
1138}
1139
1140size_t retro_get_memory_size(unsigned type)
1141{
1142 unsigned int i;
1143 int sum;
1144
1145 switch(type)
1146 {
1147 case RETRO_MEMORY_SAVE_RAM:
93f9619e 1148 if (PicoIn.AHW & PAHW_MCD)
7612bf90 1149 // bram
1150 return 0x2000;
1151
1152 if (Pico.m.frame_count == 0)
28a5b392 1153 return Pico.sv.size;
7612bf90 1154
1155 // if game doesn't write to sram, don't report it to
1156 // libretro so that RA doesn't write out zeroed .srm
28a5b392 1157 for (i = 0, sum = 0; i < Pico.sv.size; i++)
1158 sum |= Pico.sv.data[i];
7612bf90 1159
28a5b392 1160 return (sum != 0) ? Pico.sv.size : 0;
7612bf90 1161
1162 case RETRO_MEMORY_SYSTEM_RAM:
93f9619e 1163 if (PicoIn.AHW & PAHW_SMS)
7612bf90 1164 return 0x2000;
1165 else
28a5b392 1166 return sizeof(PicoMem.ram);
7612bf90 1167
1168 default:
1169 return 0;
1170 }
1171
1172}
1173
1174void retro_reset(void)
1175{
1176 PicoReset();
1177}
1178
1179static const unsigned short retro_pico_map[] = {
1180 1 << GBTN_B,
1181 1 << GBTN_A,
1182 1 << GBTN_MODE,
1183 1 << GBTN_START,
1184 1 << GBTN_UP,
1185 1 << GBTN_DOWN,
1186 1 << GBTN_LEFT,
1187 1 << GBTN_RIGHT,
1188 1 << GBTN_C,
1189 1 << GBTN_Y,
1190 1 << GBTN_X,
1191 1 << GBTN_Z,
1192};
1193#define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1194
1195static void snd_write(int len)
1196{
6311a3ba 1197 audio_batch_cb(PicoIn.sndOut, len / 4);
7612bf90 1198}
1199
1200static enum input_device input_name_to_val(const char *name)
1201{
1202 if (strcmp(name, "3 button pad") == 0)
1203 return PICO_INPUT_PAD_3BTN;
1204 if (strcmp(name, "6 button pad") == 0)
1205 return PICO_INPUT_PAD_6BTN;
1206 if (strcmp(name, "None") == 0)
1207 return PICO_INPUT_NOTHING;
1208
1209 if (log_cb)
1210 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1211 return PICO_INPUT_PAD_3BTN;
1212}
1213
1214static void update_variables(void)
1215{
1216 struct retro_variable var;
24aab4da 1217 int OldPicoRegionOverride;
1218 float old_user_vout_width;
7612bf90 1219
1220 var.value = NULL;
1221 var.key = "picodrive_input1";
1222 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1223 PicoSetInputDevice(0, input_name_to_val(var.value));
1224
1225 var.value = NULL;
1226 var.key = "picodrive_input2";
1227 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1228 PicoSetInputDevice(1, input_name_to_val(var.value));
1229
1230 var.value = NULL;
1231 var.key = "picodrive_sprlim";
1232 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1233 if (strcmp(var.value, "enabled") == 0)
93f9619e 1234 PicoIn.opt |= POPT_DIS_SPRITE_LIM;
7612bf90 1235 else
93f9619e 1236 PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
7612bf90 1237 }
1238
1239 var.value = NULL;
1240 var.key = "picodrive_ramcart";
1241 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1242 if (strcmp(var.value, "enabled") == 0)
93f9619e 1243 PicoIn.opt |= POPT_EN_MCD_RAMCART;
7612bf90 1244 else
93f9619e 1245 PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
7612bf90 1246 }
1247
93f9619e 1248 OldPicoRegionOverride = PicoIn.regionOverride;
7612bf90 1249 var.value = NULL;
1250 var.key = "picodrive_region";
1251 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1252 if (strcmp(var.value, "Auto") == 0)
93f9619e 1253 PicoIn.regionOverride = 0;
7612bf90 1254 else if (strcmp(var.value, "Japan NTSC") == 0)
93f9619e 1255 PicoIn.regionOverride = 1;
7612bf90 1256 else if (strcmp(var.value, "Japan PAL") == 0)
93f9619e 1257 PicoIn.regionOverride = 2;
7612bf90 1258 else if (strcmp(var.value, "US") == 0)
93f9619e 1259 PicoIn.regionOverride = 4;
7612bf90 1260 else if (strcmp(var.value, "Europe") == 0)
93f9619e 1261 PicoIn.regionOverride = 8;
7612bf90 1262 }
1263
7612bf90 1264 // Update region, fps and sound flags if needed
93f9619e 1265 if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
7612bf90 1266 {
1267 PicoDetectRegion();
1268 PicoLoopPrepare();
1269 PsndRerate(1);
1270 }
1271
24aab4da 1272 old_user_vout_width = user_vout_width;
7612bf90 1273 var.value = NULL;
1274 var.key = "picodrive_aspect";
1275 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1276 if (strcmp(var.value, "4/3") == 0)
1277 user_vout_width = VOUT_4_3;
1278 else if (strcmp(var.value, "CRT") == 0)
1279 user_vout_width = VOUT_CRT;
1280 else
1281 user_vout_width = VOUT_PAR;
1282 }
1283
1284 var.value = NULL;
1285 var.key = "picodrive_overscan";
1286 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1287 if (strcmp(var.value, "enabled") == 0)
1288 show_overscan = true;
1289 else
1290 show_overscan = false;
1291 }
1292
1293 if (user_vout_width != old_user_vout_width)
1294 {
1295 // Update the geometry
1296 struct retro_system_av_info av_info;
1297 retro_get_system_av_info(&av_info);
1298 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1299 }
1300
35f2b65e 1301 var.value = NULL;
1302 var.key = "picodrive_overclk68k";
1303 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1304 PicoIn.overclockM68k = 0;
1305 if (var.value[0] == '+')
1306 PicoIn.overclockM68k = atoi(var.value + 1);
1307 }
1308
7612bf90 1309#ifdef DRC_SH2
1310 var.value = NULL;
1311 var.key = "picodrive_drc";
1312 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1313 if (strcmp(var.value, "enabled") == 0)
93f9619e 1314 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1315 else
93f9619e 1316 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1317 }
1318#endif
1319#ifdef _3DS
1320 if(!ctr_svchack_successful)
93f9619e 1321 PicoIn.opt &= ~POPT_EN_DRC;
7612bf90 1322#endif
1323}
1324
1325void retro_run(void)
1326{
1327 bool updated = false;
1328 int pad, i;
1329
1330 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1331 update_variables();
1332
1333 input_poll_cb();
1334
93f9619e 1335 PicoIn.pad[0] = PicoIn.pad[1] = 0;
7612bf90 1336 for (pad = 0; pad < 2; pad++)
1337 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1338 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
93f9619e 1339 PicoIn.pad[pad] |= retro_pico_map[i];
7612bf90 1340
1341 PicoPatchApply();
1342 PicoFrame();
1343
1344 video_cb((short *)vout_buf + vout_offset,
1345 vout_width, vout_height, vout_width * 2);
1346}
1347
7612bf90 1348void retro_init(void)
1349{
1350 struct retro_log_callback log;
1351 int level;
1352
1353 level = 0;
1354 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1355
1356 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1357 log_cb = log.log;
1358 else
1359 log_cb = NULL;
1360
1361 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1362
1363#ifdef _3DS
1364 ctr_svchack_successful = ctr_svchack_init();
1365#elif defined(VITA)
1366 sceBlock = getVMBlock();
1367#endif
1368
93f9619e 1369 PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
7612bf90 1370 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1371 | POPT_EN_32X|POPT_EN_PWM
1372 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1373#ifdef __arm__
1374#ifdef _3DS
1375 if (ctr_svchack_successful)
1376#endif
93f9619e 1377 PicoIn.opt |= POPT_EN_DRC;
7612bf90 1378#endif
6311a3ba 1379 PicoIn.sndRate = 44100;
93f9619e 1380 PicoIn.autoRgnOrder = 0x184; // US, EU, JP
7612bf90 1381
1382 vout_width = 320;
1383 vout_height = 240;
1384#ifdef _3DS
1385 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1386#else
1387 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1388#endif
1389
1390 PicoInit();
1391 PicoDrawSetOutFormat(PDF_RGB555, 0);
1392 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1393
6311a3ba 1394 //PicoIn.osdMessage = plat_status_msg_busy_next;
1395 PicoIn.mcdTrayOpen = disk_tray_open;
1396 PicoIn.mcdTrayClose = disk_tray_close;
7612bf90 1397
1398 update_variables();
1399}
1400
1401void retro_deinit(void)
1402{
1403#ifdef _3DS
1404 linearFree(vout_buf);
1405#else
1406 free(vout_buf);
1407#endif
1408 vout_buf = NULL;
1409 PicoExit();
1410}
df925153 1411
1412// vim:shiftwidth=3:ts=3:expandtab
fast MegaDrive/MegaCD/32X emulator