2 * libretro core glue for PicoDrive
5 * (C) Daniel De Matteis, 2013
7 * This work is licensed under the terms of MAME license.
8 * See COPYING file in the top-level directory.
11 #define _GNU_SOURCE 1 // mremap
23 #include <sys/types.h>
27 #include <libkern/OSCacheControl.h>
31 #include "3ds/3ds_utils.h"
36 int svcDuplicateHandle(unsigned int* out, unsigned int original);
37 int svcCloseHandle(unsigned int handle);
38 int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
39 unsigned int size, unsigned int type, unsigned int perm);
40 void* linearMemAlign(size_t size, size_t alignment);
41 void linearFree(void* mem);
43 static int ctr_svchack_successful = 0;
46 #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
48 #include <psp2/kernel/sysmem.h>
51 int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
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"
62 static retro_log_printf_t log_cb;
63 static retro_video_refresh_t video_cb;
64 static retro_input_poll_t input_poll_cb;
65 static retro_input_state_t input_state_cb;
66 static retro_environment_t environ_cb;
67 static retro_audio_sample_batch_t audio_batch_cb;
69 #define VOUT_MAX_WIDTH 320
70 #define VOUT_MAX_HEIGHT 240
72 static const float VOUT_PAR = 0.0;
73 static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
74 static const float VOUT_CRT = (224.0f * 1.29911f);
76 bool show_overscan = false;
78 static void *vout_buf;
79 static int vout_width, vout_height, vout_offset;
80 static float user_vout_width = 0.0;
82 static short ALIGNED(4) sndBuffer[2*44100/50];
84 static void snd_write(int len);
92 /* functions called by the core */
94 void cache_flush_d_inval_i(void *start, void *end)
97 size_t len = (char *)end - (char *)start;
99 #if defined(__BLACKBERRY_QNX__)
100 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
101 #elif defined(__MACH__)
102 sys_dcache_flush(start, len);
103 sys_icache_invalidate(start, len);
105 ctr_flush_invalidate_cache();
107 sceKernelSyncVMDomain(sceBlock, start, len);
109 __clear_cache(start, end);
115 /* mmap() replacement for Windows
117 * Author: Mike Frysinger <vapier@gentoo.org>
118 * Placed into the public domain
122 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
123 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
124 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
125 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
128 #define PROT_READ 0x1
129 #define PROT_WRITE 0x2
130 /* This flag is only available in WinXP+ */
131 #ifdef FILE_MAP_EXECUTE
132 #define PROT_EXEC 0x4
134 #define PROT_EXEC 0x0
135 #define FILE_MAP_EXECUTE 0
138 #define MAP_SHARED 0x01
139 #define MAP_PRIVATE 0x02
140 #define MAP_ANONYMOUS 0x20
141 #define MAP_ANON MAP_ANONYMOUS
142 #define MAP_FAILED ((void *) -1)
144 #ifdef __USE_FILE_OFFSET64
145 # define DWORD_HI(x) (x >> 32)
146 # define DWORD_LO(x) ((x) & 0xffffffff)
148 # define DWORD_HI(x) (0)
149 # define DWORD_LO(x) (x)
152 static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
154 uint32_t flProtect, dwDesiredAccess;
159 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
162 if (!(flags & MAP_ANON) || offset)
164 } else if (flags & MAP_ANON)
167 if (prot & PROT_WRITE) {
168 if (prot & PROT_EXEC)
169 flProtect = PAGE_EXECUTE_READWRITE;
171 flProtect = PAGE_READWRITE;
172 } else if (prot & PROT_EXEC) {
173 if (prot & PROT_READ)
174 flProtect = PAGE_EXECUTE_READ;
175 else if (prot & PROT_EXEC)
176 flProtect = PAGE_EXECUTE;
178 flProtect = PAGE_READONLY;
180 end = length + offset;
183 mmap_fd = INVALID_HANDLE_VALUE;
185 mmap_fd = (HANDLE)_get_osfhandle(fd);
186 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
190 if (prot & PROT_WRITE)
191 dwDesiredAccess = FILE_MAP_WRITE;
193 dwDesiredAccess = FILE_MAP_READ;
194 if (prot & PROT_EXEC)
195 dwDesiredAccess |= FILE_MAP_EXECUTE;
196 if (flags & MAP_PRIVATE)
197 dwDesiredAccess |= FILE_MAP_COPY;
198 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
206 static void munmap(void *addr, size_t length)
208 UnmapViewOfFile(addr);
209 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
211 #elif defined(NO_MMAP)
212 #define PROT_EXEC 0x04
216 #define MAP_PRIVATE 0
217 #define MAP_ANONYMOUS 0
219 void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
224 void munmap(void *base_addr, size_t len)
229 int mprotect(void *addr, size_t len, int prot)
231 /* stub - not really needed at this point since this codepath has no dynarecs */
237 #ifndef MAP_ANONYMOUS
238 #define MAP_ANONYMOUS MAP_ANON
244 unsigned int requested_map;
248 pico_mmap_t pico_mmaps[] = {
254 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
258 if (ctr_svchack_successful)
260 pico_mmap_t* pico_mmap;
262 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
264 if ((pico_mmap->requested_map == addr))
266 unsigned int ptr_aligned, tmp;
267 unsigned int currentHandle;
268 unsigned int perm = 0b011;
273 size = (size + 0xFFF) & ~0xFFF;
274 pico_mmap->buffer = malloc(size + 0x1000);
275 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
277 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
279 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
282 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
286 svcCloseHandle(currentHandle);
287 return (void*)pico_mmap->requested_map;
295 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
297 if (ctr_svchack_successful)
299 pico_mmap_t* pico_mmap;
301 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
303 if ((pico_mmap->requested_map == (unsigned int)ptr))
305 unsigned int ptr_aligned;
306 unsigned int currentHandle;
309 oldsize = (oldsize + 0xFFF) & ~0xFFF;
310 newsize = (newsize + 0xFFF) & ~0xFFF;
311 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
313 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
315 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
317 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
321 pico_mmap->buffer = tmp;
322 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
324 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
326 svcCloseHandle(currentHandle);
333 return realloc(ptr, newsize);
336 void plat_munmap(void *ptr, size_t size)
338 if (ctr_svchack_successful)
340 pico_mmap_t* pico_mmap;
342 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
344 if ((pico_mmap->requested_map == (unsigned int)ptr))
346 unsigned int ptr_aligned;
347 unsigned int currentHandle;
349 size = (size + 0xFFF) & ~0xFFF;
350 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
352 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
354 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
356 svcCloseHandle(currentHandle);
358 free(pico_mmap->buffer);
359 pico_mmap->buffer = NULL;
369 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
371 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
374 req = (void *)(uintptr_t)addr;
375 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
376 if (ret == MAP_FAILED) {
378 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
382 if (addr != 0 && ret != (void *)(uintptr_t)addr) {
384 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
396 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
399 void *ret = mremap(ptr, oldsize, newsize, 0);
400 if (ret == MAP_FAILED)
406 size_t preserve_size;
408 preserve_size = oldsize;
409 if (preserve_size > newsize)
410 preserve_size = newsize;
411 tmp = malloc(preserve_size);
414 memcpy(tmp, ptr, preserve_size);
416 munmap(ptr, oldsize);
417 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
418 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
419 if (ret == MAP_FAILED) {
423 memcpy(ret, tmp, preserve_size);
429 void plat_munmap(void *ptr, size_t size)
436 // if NULL is returned, static buffer is used
437 void *plat_mem_get_for_drc(size_t size)
441 sceKernelGetMemBlockBase(sceBlock, &mem);
446 int plat_mem_set_exec(void *ptr, size_t size)
450 DWORD oldProtect = 0;
451 ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, &oldProtect);
452 if (ret == 0 && log_cb)
453 log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
456 if (ctr_svchack_successful)
458 unsigned int currentHandle;
459 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
460 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
461 size, MEMOP_PROT, 0b111);
462 svcCloseHandle(currentHandle);
463 ctr_flush_invalidate_cache();
469 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
474 ret = sceKernelOpenVMDomain();
476 ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
477 if (ret != 0 && log_cb)
478 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
483 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
485 struct retro_system_av_info av_info;
487 memset(vout_buf, 0, 320 * 240 * 2);
488 vout_width = is_32cols ? 256 : 320;
489 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
490 if (show_overscan == true) line_count += 16;
491 if (show_overscan == true) start_line -= 8;
493 vout_height = line_count;
494 vout_offset = vout_width * start_line;
496 // Update the geometry
497 retro_get_system_av_info(&av_info);
498 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
501 void emu_32x_startup(void)
505 void lprintf(const char *fmt, ...)
510 vsprintf(buffer, fmt, ap);
511 /* TODO - add 'level' param for warning/error messages? */
513 log_cb(RETRO_LOG_INFO, "%s", buffer);
518 void retro_set_environment(retro_environment_t cb)
520 static const struct retro_variable vars[] = {
521 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
522 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
523 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
524 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
525 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
526 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
527 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
528 { "picodrive_overclk68k", "68k overclock; disabled|+25%|+50%|+75%|+100%|+200%|+400%" },
530 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
537 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
540 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
541 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
542 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
543 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
544 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
546 unsigned retro_api_version(void)
548 return RETRO_API_VERSION;
551 void retro_set_controller_port_device(unsigned port, unsigned device)
555 void retro_get_system_info(struct retro_system_info *info)
557 memset(info, 0, sizeof(*info));
558 info->library_name = "PicoDrive";
560 #define GIT_VERSION ""
562 info->library_version = VERSION GIT_VERSION;
563 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
564 info->need_fullpath = true;
567 void retro_get_system_av_info(struct retro_system_av_info *info)
571 memset(info, 0, sizeof(*info));
572 info->timing.fps = Pico.m.pal ? 50 : 60;
573 info->timing.sample_rate = 44100;
574 info->geometry.base_width = vout_width;
575 info->geometry.base_height = vout_height;
576 info->geometry.max_width = vout_width;
577 info->geometry.max_height = vout_height;
579 common_width = vout_width;
580 if (user_vout_width != 0)
581 common_width = user_vout_width;
583 info->geometry.aspect_ratio = common_width / vout_height;
587 struct savestate_state {
588 const char *load_buf;
594 size_t state_read(void *p, size_t size, size_t nmemb, void *file)
596 struct savestate_state *state = file;
597 size_t bsize = size * nmemb;
599 if (state->pos + bsize > state->size) {
601 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
602 state->pos + bsize, state->size);
603 bsize = state->size - state->pos;
608 memcpy(p, state->load_buf + state->pos, bsize);
613 size_t state_write(void *p, size_t size, size_t nmemb, void *file)
615 struct savestate_state *state = file;
616 size_t bsize = size * nmemb;
618 if (state->pos + bsize > state->size) {
620 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
621 state->pos + bsize, state->size);
622 bsize = state->size - state->pos;
627 memcpy(state->save_buf + state->pos, p, bsize);
632 size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
634 struct savestate_state *state = file;
635 size_t bsize = size * nmemb;
641 size_t state_eof(void *file)
643 struct savestate_state *state = file;
645 return state->pos >= state->size;
648 int state_fseek(void *file, long offset, int whence)
650 struct savestate_state *state = file;
657 state->pos += offset;
660 state->pos = state->size + offset;
663 return (int)state->pos;
666 /* savestate sizes vary wildly depending if cd/32x or
667 * carthw is active, so run the whole thing to get size */
668 size_t retro_serialize_size(void)
670 struct savestate_state state = { 0, };
673 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
680 bool retro_serialize(void *data, size_t size)
682 struct savestate_state state = { 0, };
685 state.save_buf = data;
689 ret = PicoStateFP(&state, 1, NULL, state_write,
694 bool retro_unserialize(const void *data, size_t size)
696 struct savestate_state state = { 0, };
699 state.load_buf = data;
703 ret = PicoStateFP(&state, 0, state_read, NULL,
704 state_eof, state_fseek);
715 extern void decode(char *buff, patch *dest);
716 extern uint16_t m68k_read16(uint32_t a);
717 extern void m68k_write16(uint32_t a, uint16_t d);
719 void retro_cheat_reset(void)
724 for (i = 0; i < PicoPatchCount; i++)
726 addr = PicoPatches[i].addr;
727 if (addr < Pico.romsize) {
728 if (PicoPatches[i].active)
729 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
731 if (PicoPatches[i].active)
732 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
739 void retro_cheat_set(unsigned index, bool enabled, const char *code)
742 int array_len = PicoPatchCount;
746 if (code=='\0') return;
747 strcpy(codeCopy,code);
748 buff = strtok(codeCopy,"+");
753 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
755 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
759 /* code was good, add it */
760 if (array_len < PicoPatchCount + 1)
765 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
767 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
772 strcpy(PicoPatches[PicoPatchCount].code, buff);
774 PicoPatches[PicoPatchCount].active = enabled;
775 PicoPatches[PicoPatchCount].addr = pt.addr;
776 PicoPatches[PicoPatchCount].data = pt.data;
777 PicoPatches[PicoPatchCount].comp = pt.comp;
778 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
779 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
781 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
784 buff = strtok(NULL,"+");
788 /* multidisk support */
789 static bool disk_ejected;
790 static unsigned int disk_current_index;
791 static unsigned int disk_count;
792 static struct disks_state {
796 static bool disk_set_eject_state(bool ejected)
799 disk_ejected = ejected;
803 static bool disk_get_eject_state(void)
808 static unsigned int disk_get_image_index(void)
810 return disk_current_index;
813 static bool disk_set_image_index(unsigned int index)
815 enum cd_img_type cd_type;
818 if (index >= sizeof(disks) / sizeof(disks[0]))
821 if (disks[index].fname == NULL) {
823 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
825 // RetroArch specifies "no disk" with index == count,
826 // so don't fail here..
827 disk_current_index = index;
832 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
836 cd_type = PicoCdCheck(disks[index].fname, NULL);
837 if (cd_type != CIT_NOT_CD)
838 ret = cdd_load(disks[index].fname, cd_type);
841 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
845 disk_current_index = index;
849 static unsigned int disk_get_num_images(void)
854 static bool disk_replace_image_index(unsigned index,
855 const struct retro_game_info *info)
859 if (index >= sizeof(disks) / sizeof(disks[0]))
862 if (disks[index].fname != NULL)
863 free(disks[index].fname);
864 disks[index].fname = NULL;
867 disks[index].fname = strdup(info->path);
868 if (index == disk_current_index)
869 ret = disk_set_image_index(index);
875 static bool disk_add_image_index(void)
877 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
884 static struct retro_disk_control_callback disk_control = {
885 disk_set_eject_state,
886 disk_get_eject_state,
887 disk_get_image_index,
888 disk_set_image_index,
890 disk_replace_image_index,
891 disk_add_image_index,
894 static void disk_tray_open(void)
897 log_cb(RETRO_LOG_INFO, "cd tray open\n");
901 static void disk_tray_close(void)
904 log_cb(RETRO_LOG_INFO, "cd tray close\n");
909 static const char * const biosfiles_us[] = {
910 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
912 static const char * const biosfiles_eu[] = {
913 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
915 static const char * const biosfiles_jp[] = {
916 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
919 static void make_system_path(char *buf, size_t buf_size,
920 const char *name, const char *ext)
922 const char *dir = NULL;
924 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
925 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
928 snprintf(buf, buf_size, "%s%s", name, ext);
932 static const char *find_bios(int *region, const char *cd_fname)
934 const char * const *files;
935 static char path[256];
939 if (*region == 4) { // US
940 files = biosfiles_us;
941 count = sizeof(biosfiles_us) / sizeof(char *);
942 } else if (*region == 8) { // EU
943 files = biosfiles_eu;
944 count = sizeof(biosfiles_eu) / sizeof(char *);
945 } else if (*region == 1 || *region == 2) {
946 files = biosfiles_jp;
947 count = sizeof(biosfiles_jp) / sizeof(char *);
952 for (i = 0; i < count; i++)
954 make_system_path(path, sizeof(path), files[i], ".bin");
955 f = fopen(path, "rb");
959 make_system_path(path, sizeof(path), files[i], ".zip");
960 f = fopen(path, "rb");
967 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
975 bool retro_load_game(const struct retro_game_info *info)
977 enum media_type_e media_type;
978 static char carthw_path[256];
981 struct retro_input_descriptor desc[] = {
982 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
983 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
984 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
985 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
986 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
987 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
988 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
989 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
992 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
993 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
995 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
996 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
997 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
998 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
999 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
1000 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
1001 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1002 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1005 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1006 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1011 struct retro_input_descriptor desc_sms[] = {
1012 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1013 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1014 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1015 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1016 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1017 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1018 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1020 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1021 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1022 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1023 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1024 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1025 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1026 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1031 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1032 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1034 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1038 if (info == NULL || info->path == NULL) {
1040 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1044 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1045 if (disks[i].fname != NULL) {
1046 free(disks[i].fname);
1047 disks[i].fname = NULL;
1051 disk_current_index = 0;
1053 disks[0].fname = strdup(info->path);
1055 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1057 media_type = PicoLoadMedia(info->path, carthw_path,
1060 switch (media_type) {
1063 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1067 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1069 case PM_BAD_CD_NO_BIOS:
1071 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1075 log_cb(RETRO_LOG_ERROR, "Load error\n");
1081 if (media_type == PM_MARK3)
1082 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1084 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1088 PicoIn.writeSound = snd_write;
1089 memset(sndBuffer, 0, sizeof(sndBuffer));
1090 PicoIn.sndOut = sndBuffer;
1096 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1101 void retro_unload_game(void)
1105 unsigned retro_get_region(void)
1107 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1110 void *retro_get_memory_data(unsigned type)
1116 case RETRO_MEMORY_SAVE_RAM:
1117 if (PicoIn.AHW & PAHW_MCD)
1118 data = Pico_mcd->bram;
1120 data = Pico.sv.data;
1122 case RETRO_MEMORY_SYSTEM_RAM:
1123 if (PicoIn.AHW & PAHW_SMS)
1124 data = PicoMem.zram;
1136 size_t retro_get_memory_size(unsigned type)
1143 case RETRO_MEMORY_SAVE_RAM:
1144 if (PicoIn.AHW & PAHW_MCD)
1148 if (Pico.m.frame_count == 0)
1149 return Pico.sv.size;
1151 // if game doesn't write to sram, don't report it to
1152 // libretro so that RA doesn't write out zeroed .srm
1153 for (i = 0, sum = 0; i < Pico.sv.size; i++)
1154 sum |= Pico.sv.data[i];
1156 return (sum != 0) ? Pico.sv.size : 0;
1158 case RETRO_MEMORY_SYSTEM_RAM:
1159 if (PicoIn.AHW & PAHW_SMS)
1162 return sizeof(PicoMem.ram);
1170 void retro_reset(void)
1175 static const unsigned short retro_pico_map[] = {
1189 #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1191 static void snd_write(int len)
1193 audio_batch_cb(PicoIn.sndOut, len / 4);
1196 static enum input_device input_name_to_val(const char *name)
1198 if (strcmp(name, "3 button pad") == 0)
1199 return PICO_INPUT_PAD_3BTN;
1200 if (strcmp(name, "6 button pad") == 0)
1201 return PICO_INPUT_PAD_6BTN;
1202 if (strcmp(name, "None") == 0)
1203 return PICO_INPUT_NOTHING;
1206 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1207 return PICO_INPUT_PAD_3BTN;
1210 static void update_variables(void)
1212 struct retro_variable var;
1213 int OldPicoRegionOverride;
1214 float old_user_vout_width;
1217 var.key = "picodrive_input1";
1218 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1219 PicoSetInputDevice(0, input_name_to_val(var.value));
1222 var.key = "picodrive_input2";
1223 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1224 PicoSetInputDevice(1, input_name_to_val(var.value));
1227 var.key = "picodrive_sprlim";
1228 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1229 if (strcmp(var.value, "enabled") == 0)
1230 PicoIn.opt |= POPT_DIS_SPRITE_LIM;
1232 PicoIn.opt &= ~POPT_DIS_SPRITE_LIM;
1236 var.key = "picodrive_ramcart";
1237 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1238 if (strcmp(var.value, "enabled") == 0)
1239 PicoIn.opt |= POPT_EN_MCD_RAMCART;
1241 PicoIn.opt &= ~POPT_EN_MCD_RAMCART;
1244 OldPicoRegionOverride = PicoIn.regionOverride;
1246 var.key = "picodrive_region";
1247 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1248 if (strcmp(var.value, "Auto") == 0)
1249 PicoIn.regionOverride = 0;
1250 else if (strcmp(var.value, "Japan NTSC") == 0)
1251 PicoIn.regionOverride = 1;
1252 else if (strcmp(var.value, "Japan PAL") == 0)
1253 PicoIn.regionOverride = 2;
1254 else if (strcmp(var.value, "US") == 0)
1255 PicoIn.regionOverride = 4;
1256 else if (strcmp(var.value, "Europe") == 0)
1257 PicoIn.regionOverride = 8;
1260 // Update region, fps and sound flags if needed
1261 if (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)
1268 old_user_vout_width = user_vout_width;
1270 var.key = "picodrive_aspect";
1271 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1272 if (strcmp(var.value, "4/3") == 0)
1273 user_vout_width = VOUT_4_3;
1274 else if (strcmp(var.value, "CRT") == 0)
1275 user_vout_width = VOUT_CRT;
1277 user_vout_width = VOUT_PAR;
1281 var.key = "picodrive_overscan";
1282 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1283 if (strcmp(var.value, "enabled") == 0)
1284 show_overscan = true;
1286 show_overscan = false;
1289 if (user_vout_width != old_user_vout_width)
1291 // Update the geometry
1292 struct retro_system_av_info av_info;
1293 retro_get_system_av_info(&av_info);
1294 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1298 var.key = "picodrive_overclk68k";
1299 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1300 PicoIn.overclockM68k = 0;
1301 if (var.value[0] == '+')
1302 PicoIn.overclockM68k = atoi(var.value + 1);
1307 var.key = "picodrive_drc";
1308 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1309 if (strcmp(var.value, "enabled") == 0)
1310 PicoIn.opt |= POPT_EN_DRC;
1312 PicoIn.opt &= ~POPT_EN_DRC;
1316 if(!ctr_svchack_successful)
1317 PicoIn.opt &= ~POPT_EN_DRC;
1321 void retro_run(void)
1323 bool updated = false;
1326 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1331 PicoIn.pad[0] = PicoIn.pad[1] = 0;
1332 for (pad = 0; pad < 2; pad++)
1333 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1334 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1335 PicoIn.pad[pad] |= retro_pico_map[i];
1340 video_cb((short *)vout_buf + vout_offset,
1341 vout_width, vout_height, vout_width * 2);
1344 void retro_init(void)
1346 struct retro_log_callback log;
1350 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1352 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1357 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1360 ctr_svchack_successful = ctr_svchack_init();
1362 sceBlock = getVMBlock();
1365 PicoIn.opt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1366 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1367 | POPT_EN_32X|POPT_EN_PWM
1368 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1371 if (ctr_svchack_successful)
1373 PicoIn.opt |= POPT_EN_DRC;
1375 PicoIn.sndRate = 44100;
1376 PicoIn.autoRgnOrder = 0x184; // US, EU, JP
1381 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1383 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1387 PicoDrawSetOutFormat(PDF_RGB555, 0);
1388 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1390 //PicoIn.osdMessage = plat_status_msg_busy_next;
1391 PicoIn.mcdTrayOpen = disk_tray_open;
1392 PicoIn.mcdTrayClose = disk_tray_close;
1397 void retro_deinit(void)
1400 linearFree(vout_buf);
1408 // vim:shiftwidth=3:ts=3:expandtab