2 * libretro core glue for PicoDrive
5 * This work is licensed under the terms of MAME license.
6 * See COPYING file in the top-level directory.
9 #define _GNU_SOURCE 1 // mremap
20 #include <sys/types.h>
24 #include <libkern/OSCacheControl.h>
28 #include "3ds/3ds_utils.h"
33 int svcDuplicateHandle(unsigned int* out, unsigned int original);
34 int svcCloseHandle(unsigned int handle);
35 int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
36 unsigned int size, unsigned int type, unsigned int perm);
37 void* linearMemAlign(size_t size, size_t alignment);
38 void linearFree(void* mem);
40 static int ctr_svchack_successful = 0;
43 #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
45 #include <psp2/kernel/sysmem.h>
48 int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
52 #include <pico/pico_int.h>
53 #include <pico/state.h>
54 #include "../common/input_pico.h"
55 #include "../common/version.h"
58 static retro_log_printf_t log_cb;
59 static retro_video_refresh_t video_cb;
60 static retro_input_poll_t input_poll_cb;
61 static retro_input_state_t input_state_cb;
62 static retro_environment_t environ_cb;
63 static retro_audio_sample_batch_t audio_batch_cb;
65 #define VOUT_MAX_WIDTH 320
66 #define VOUT_MAX_HEIGHT 240
68 static const float VOUT_PAR = 0.0;
69 static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
70 static const float VOUT_CRT = (224.0f * 1.29911f);
72 static void *vout_buf;
73 static int vout_width, vout_height, vout_offset;
74 static float user_vout_width = 0.0;
77 static short sndBuffer[2*44100/50];
79 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
82 static void snd_write(int len);
90 /* functions called by the core */
92 void cache_flush_d_inval_i(void *start, void *end)
95 size_t len = (char *)end - (char *)start;
96 #if defined(__BLACKBERRY_QNX__)
97 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
98 #elif defined(__MACH__)
99 sys_dcache_flush(start, len);
100 sys_icache_invalidate(start, len);
102 ctr_flush_invalidate_cache();
104 sceKernelSyncVMDomain(sceBlock, start, len);
106 __clear_cache(start, end);
112 /* mmap() replacement for Windows
114 * Author: Mike Frysinger <vapier@gentoo.org>
115 * Placed into the public domain
119 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
120 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
121 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
122 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
125 #define PROT_READ 0x1
126 #define PROT_WRITE 0x2
127 /* This flag is only available in WinXP+ */
128 #ifdef FILE_MAP_EXECUTE
129 #define PROT_EXEC 0x4
131 #define PROT_EXEC 0x0
132 #define FILE_MAP_EXECUTE 0
135 #define MAP_SHARED 0x01
136 #define MAP_PRIVATE 0x02
137 #define MAP_ANONYMOUS 0x20
138 #define MAP_ANON MAP_ANONYMOUS
139 #define MAP_FAILED ((void *) -1)
141 #ifdef __USE_FILE_OFFSET64
142 # define DWORD_HI(x) (x >> 32)
143 # define DWORD_LO(x) ((x) & 0xffffffff)
145 # define DWORD_HI(x) (0)
146 # define DWORD_LO(x) (x)
149 static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
151 uint32_t flProtect, dwDesiredAccess;
156 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
159 if (!(flags & MAP_ANON) || offset)
161 } else if (flags & MAP_ANON)
164 if (prot & PROT_WRITE) {
165 if (prot & PROT_EXEC)
166 flProtect = PAGE_EXECUTE_READWRITE;
168 flProtect = PAGE_READWRITE;
169 } else if (prot & PROT_EXEC) {
170 if (prot & PROT_READ)
171 flProtect = PAGE_EXECUTE_READ;
172 else if (prot & PROT_EXEC)
173 flProtect = PAGE_EXECUTE;
175 flProtect = PAGE_READONLY;
177 end = length + offset;
180 mmap_fd = INVALID_HANDLE_VALUE;
182 mmap_fd = (HANDLE)_get_osfhandle(fd);
183 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
187 if (prot & PROT_WRITE)
188 dwDesiredAccess = FILE_MAP_WRITE;
190 dwDesiredAccess = FILE_MAP_READ;
191 if (prot & PROT_EXEC)
192 dwDesiredAccess |= FILE_MAP_EXECUTE;
193 if (flags & MAP_PRIVATE)
194 dwDesiredAccess |= FILE_MAP_COPY;
195 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
203 static void munmap(void *addr, size_t length)
205 UnmapViewOfFile(addr);
206 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
208 #elif defined(NO_MMAP)
209 #define PROT_EXEC 0x04
213 #define MAP_PRIVATE 0
214 #define MAP_ANONYMOUS 0
216 void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
221 void munmap(void *base_addr, size_t len)
226 int mprotect(void *addr, size_t len, int prot)
228 /* stub - not really needed at this point since this codepath has no dynarecs */
234 #ifndef MAP_ANONYMOUS
235 #define MAP_ANONYMOUS MAP_ANON
241 unsigned int requested_map;
245 pico_mmap_t pico_mmaps[] = {
251 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
255 if (ctr_svchack_successful)
257 pico_mmap_t* pico_mmap;
259 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
261 if ((pico_mmap->requested_map == addr))
263 unsigned int ptr_aligned, tmp;
264 unsigned int currentHandle;
265 unsigned int perm = 0b011;
270 size = (size + 0xFFF) & ~0xFFF;
271 pico_mmap->buffer = malloc(size + 0x1000);
272 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
274 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
276 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
279 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
283 svcCloseHandle(currentHandle);
284 return (void*)pico_mmap->requested_map;
292 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
294 if (ctr_svchack_successful)
296 pico_mmap_t* pico_mmap;
298 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
300 if ((pico_mmap->requested_map == (unsigned int)ptr))
302 unsigned int ptr_aligned;
303 unsigned int currentHandle;
306 oldsize = (oldsize + 0xFFF) & ~0xFFF;
307 newsize = (newsize + 0xFFF) & ~0xFFF;
308 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
310 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
312 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
314 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
318 pico_mmap->buffer = tmp;
319 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
321 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
323 svcCloseHandle(currentHandle);
330 return realloc(ptr, newsize);
333 void plat_munmap(void *ptr, size_t size)
335 if (ctr_svchack_successful)
337 pico_mmap_t* pico_mmap;
339 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
341 if ((pico_mmap->requested_map == (unsigned int)ptr))
343 unsigned int ptr_aligned;
344 unsigned int currentHandle;
346 size = (size + 0xFFF) & ~0xFFF;
347 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
349 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
351 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
353 svcCloseHandle(currentHandle);
355 free(pico_mmap->buffer);
356 pico_mmap->buffer = NULL;
366 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
368 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
372 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
373 if (ret == MAP_FAILED) {
375 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
379 if (addr != 0 && ret != (void *)addr) {
381 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
393 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
396 void *ret = mremap(ptr, oldsize, newsize, 0);
397 if (ret == MAP_FAILED)
403 size_t preserve_size;
405 preserve_size = oldsize;
406 if (preserve_size > newsize)
407 preserve_size = newsize;
408 tmp = malloc(preserve_size);
411 memcpy(tmp, ptr, preserve_size);
413 munmap(ptr, oldsize);
414 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
415 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
416 if (ret == MAP_FAILED) {
420 memcpy(ret, tmp, preserve_size);
426 void plat_munmap(void *ptr, size_t size)
433 int plat_mem_set_exec(void *ptr, size_t size)
436 int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
437 if (ret == 0 && log_cb)
438 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
441 if (ctr_svchack_successful)
443 unsigned int currentHandle;
444 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
445 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
446 size, MEMOP_PROT, 0b111);
447 svcCloseHandle(currentHandle);
448 ctr_flush_invalidate_cache();
454 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
459 int ret = sceKernelOpenVMDomain();
461 int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
462 if (ret != 0 && log_cb)
463 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
468 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
470 memset(vout_buf, 0, 320 * 240 * 2);
471 vout_width = is_32cols ? 256 : 320;
472 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
474 vout_height = line_count;
475 vout_offset = vout_width * start_line;
477 // Update the geometry
478 struct retro_system_av_info av_info;
479 retro_get_system_av_info(&av_info);
480 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
483 void emu_32x_startup(void)
487 void lprintf(const char *fmt, ...)
492 vsprintf(buffer, fmt, ap);
493 /* TODO - add 'level' param for warning/error messages? */
495 log_cb(RETRO_LOG_INFO, "%s", buffer);
500 void retro_set_environment(retro_environment_t cb)
502 static const struct retro_variable vars[] = {
503 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
504 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
505 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
506 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
507 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
508 { "picodrive_region_fps", "Region FPS; Auto|NTSC|PAL" },
509 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
511 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
518 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
521 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
522 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
523 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
524 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
525 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
527 unsigned retro_api_version(void)
529 return RETRO_API_VERSION;
532 void retro_set_controller_port_device(unsigned port, unsigned device)
536 void retro_get_system_info(struct retro_system_info *info)
538 memset(info, 0, sizeof(*info));
539 info->library_name = "PicoDrive";
540 info->library_version = VERSION;
541 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
542 info->need_fullpath = true;
545 void retro_get_system_av_info(struct retro_system_av_info *info)
547 memset(info, 0, sizeof(*info));
548 info->timing.fps = Pico.m.pal ? 50 : 60;
549 info->timing.sample_rate = 44100;
550 info->geometry.base_width = vout_width;
551 info->geometry.base_height = vout_height;
552 info->geometry.max_width = vout_width;
553 info->geometry.max_height = vout_height;
555 float common_width = vout_width;
556 if (user_vout_width != 0)
557 common_width = user_vout_width;
559 info->geometry.aspect_ratio = common_width / vout_height;
563 struct savestate_state {
564 const char *load_buf;
570 size_t state_read(void *p, size_t size, size_t nmemb, void *file)
572 struct savestate_state *state = file;
573 size_t bsize = size * nmemb;
575 if (state->pos + bsize > state->size) {
577 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
578 state->pos + bsize, state->size);
579 bsize = state->size - state->pos;
584 memcpy(p, state->load_buf + state->pos, bsize);
589 size_t state_write(void *p, size_t size, size_t nmemb, void *file)
591 struct savestate_state *state = file;
592 size_t bsize = size * nmemb;
594 if (state->pos + bsize > state->size) {
596 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
597 state->pos + bsize, state->size);
598 bsize = state->size - state->pos;
603 memcpy(state->save_buf + state->pos, p, bsize);
608 size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
610 struct savestate_state *state = file;
611 size_t bsize = size * nmemb;
617 size_t state_eof(void *file)
619 struct savestate_state *state = file;
621 return state->pos >= state->size;
624 int state_fseek(void *file, long offset, int whence)
626 struct savestate_state *state = file;
633 state->pos += offset;
636 state->pos = state->size + offset;
639 return (int)state->pos;
642 /* savestate sizes vary wildly depending if cd/32x or
643 * carthw is active, so run the whole thing to get size */
644 size_t retro_serialize_size(void)
646 struct savestate_state state = { 0, };
649 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
656 bool retro_serialize(void *data, size_t size)
658 struct savestate_state state = { 0, };
661 state.save_buf = data;
665 ret = PicoStateFP(&state, 1, NULL, state_write,
670 bool retro_unserialize(const void *data, size_t size)
672 struct savestate_state state = { 0, };
675 state.load_buf = data;
679 ret = PicoStateFP(&state, 0, state_read, NULL,
680 state_eof, state_fseek);
685 void retro_cheat_reset(void)
689 void retro_cheat_set(unsigned index, bool enabled, const char *code)
693 /* multidisk support */
694 static bool disk_ejected;
695 static unsigned int disk_current_index;
696 static unsigned int disk_count;
697 static struct disks_state {
701 static bool disk_set_eject_state(bool ejected)
704 disk_ejected = ejected;
708 static bool disk_get_eject_state(void)
713 static unsigned int disk_get_image_index(void)
715 return disk_current_index;
718 static bool disk_set_image_index(unsigned int index)
720 enum cd_img_type cd_type;
723 if (index >= sizeof(disks) / sizeof(disks[0]))
726 if (disks[index].fname == NULL) {
728 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
730 // RetroArch specifies "no disk" with index == count,
731 // so don't fail here..
732 disk_current_index = index;
737 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
741 cd_type = PicoCdCheck(disks[index].fname, NULL);
742 if (cd_type != CIT_NOT_CD)
743 ret = cdd_load(disks[index].fname, cd_type);
746 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
750 disk_current_index = index;
754 static unsigned int disk_get_num_images(void)
759 static bool disk_replace_image_index(unsigned index,
760 const struct retro_game_info *info)
764 if (index >= sizeof(disks) / sizeof(disks[0]))
767 if (disks[index].fname != NULL)
768 free(disks[index].fname);
769 disks[index].fname = NULL;
772 disks[index].fname = strdup(info->path);
773 if (index == disk_current_index)
774 ret = disk_set_image_index(index);
780 static bool disk_add_image_index(void)
782 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
789 static struct retro_disk_control_callback disk_control = {
790 disk_set_eject_state,
791 disk_get_eject_state,
792 disk_get_image_index,
793 disk_set_image_index,
795 disk_replace_image_index,
796 disk_add_image_index,
799 static void disk_tray_open(void)
802 log_cb(RETRO_LOG_INFO, "cd tray open\n");
806 static void disk_tray_close(void)
809 log_cb(RETRO_LOG_INFO, "cd tray close\n");
814 static const char * const biosfiles_us[] = {
815 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
817 static const char * const biosfiles_eu[] = {
818 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
820 static const char * const biosfiles_jp[] = {
821 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
824 static void make_system_path(char *buf, size_t buf_size,
825 const char *name, const char *ext)
827 const char *dir = NULL;
829 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
830 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
833 snprintf(buf, buf_size, "%s%s", name, ext);
837 static const char *find_bios(int *region, const char *cd_fname)
839 const char * const *files;
840 static char path[256];
844 if (*region == 4) { // US
845 files = biosfiles_us;
846 count = sizeof(biosfiles_us) / sizeof(char *);
847 } else if (*region == 8) { // EU
848 files = biosfiles_eu;
849 count = sizeof(biosfiles_eu) / sizeof(char *);
850 } else if (*region == 1 || *region == 2) {
851 files = biosfiles_jp;
852 count = sizeof(biosfiles_jp) / sizeof(char *);
857 for (i = 0; i < count; i++)
859 make_system_path(path, sizeof(path), files[i], ".bin");
860 f = fopen(path, "rb");
864 make_system_path(path, sizeof(path), files[i], ".zip");
865 f = fopen(path, "rb");
872 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
880 static void sram_reset()
887 SRam.changed = '\0' ;
888 SRam.eeprom_type = '\0';
890 SRam.eeprom_bit_cl = '\0';
891 SRam.eeprom_bit_in = '\0';
892 SRam.eeprom_bit_out = '\0';
896 bool retro_load_game(const struct retro_game_info *info)
898 enum media_type_e media_type;
899 static char carthw_path[256];
902 struct retro_input_descriptor desc[] = {
903 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
904 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
905 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
906 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
907 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
908 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
909 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
910 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
911 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
912 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
913 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
914 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
916 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
917 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
918 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
919 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
920 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
921 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
922 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
923 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
924 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
925 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
926 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
927 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
932 struct retro_input_descriptor desc_sms[] = {
933 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
934 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
935 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
936 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
937 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
938 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
939 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
941 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
942 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
943 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
944 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
945 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
946 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
947 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
954 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
955 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
957 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
961 if (info == NULL || info->path == NULL) {
963 log_cb(RETRO_LOG_ERROR, "info->path required\n");
967 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
968 if (disks[i].fname != NULL) {
969 free(disks[i].fname);
970 disks[i].fname = NULL;
974 disk_current_index = 0;
976 disks[0].fname = strdup(info->path);
978 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
980 media_type = PicoLoadMedia(info->path, carthw_path,
983 switch (media_type) {
986 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
990 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
992 case PM_BAD_CD_NO_BIOS:
994 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
998 log_cb(RETRO_LOG_ERROR, "Load error\n");
1004 if (media_type == PM_MARK3)
1005 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1007 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1011 PicoWriteSound = snd_write;
1012 memset(sndBuffer, 0, sizeof(sndBuffer));
1013 PsndOut = sndBuffer;
1019 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1024 void retro_unload_game(void)
1028 unsigned retro_get_region(void)
1030 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1033 void *retro_get_memory_data(unsigned type)
1039 case RETRO_MEMORY_SAVE_RAM:
1040 if (PicoAHW & PAHW_MCD)
1041 data = Pico_mcd->bram;
1045 case RETRO_MEMORY_SYSTEM_RAM:
1046 if (PicoAHW & PAHW_SMS)
1059 size_t retro_get_memory_size(unsigned type)
1066 case RETRO_MEMORY_SAVE_RAM:
1067 if (PicoAHW & PAHW_MCD)
1071 if (Pico.m.frame_count == 0)
1074 // if game doesn't write to sram, don't report it to
1075 // libretro so that RA doesn't write out zeroed .srm
1076 for (i = 0, sum = 0; i < SRam.size; i++)
1077 sum |= SRam.data[i];
1079 return (sum != 0) ? SRam.size : 0;
1081 case RETRO_MEMORY_SYSTEM_RAM:
1082 if (PicoAHW & PAHW_SMS)
1083 return sizeof(Pico.vramb);
1085 return sizeof(Pico.ram);
1093 void retro_reset(void)
1098 static const unsigned short retro_pico_map[] = {
1112 #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1114 static void snd_write(int len)
1116 audio_batch_cb(PsndOut, len / 4);
1119 static enum input_device input_name_to_val(const char *name)
1121 if (strcmp(name, "3 button pad") == 0)
1122 return PICO_INPUT_PAD_3BTN;
1123 if (strcmp(name, "6 button pad") == 0)
1124 return PICO_INPUT_PAD_6BTN;
1125 if (strcmp(name, "None") == 0)
1126 return PICO_INPUT_NOTHING;
1129 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1130 return PICO_INPUT_PAD_3BTN;
1133 static void update_variables(void)
1135 struct retro_variable var;
1138 var.key = "picodrive_input1";
1139 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1140 PicoSetInputDevice(0, input_name_to_val(var.value));
1143 var.key = "picodrive_input2";
1144 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1145 PicoSetInputDevice(1, input_name_to_val(var.value));
1148 var.key = "picodrive_sprlim";
1149 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1150 if (strcmp(var.value, "enabled") == 0)
1151 PicoOpt |= POPT_DIS_SPRITE_LIM;
1153 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1157 var.key = "picodrive_ramcart";
1158 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1159 if (strcmp(var.value, "enabled") == 0)
1160 PicoOpt |= POPT_EN_MCD_RAMCART;
1162 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1165 int OldPicoRegionOverride = PicoRegionOverride;
1167 var.key = "picodrive_region";
1168 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1169 if (strcmp(var.value, "Auto") == 0)
1170 PicoRegionOverride = 0;
1171 else if (strcmp(var.value, "Japan NTSC") == 0)
1172 PicoRegionOverride = 1;
1173 else if (strcmp(var.value, "Japan PAL") == 0)
1174 PicoRegionOverride = 2;
1175 else if (strcmp(var.value, "US") == 0)
1176 PicoRegionOverride = 4;
1177 else if (strcmp(var.value, "Europe") == 0)
1178 PicoRegionOverride = 8;
1181 int OldPicoRegionFPSOverride = PicoRegionFPSOverride;
1183 var.key = "picodrive_region_fps";
1184 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1185 if (strcmp(var.value, "Auto") == 0)
1186 PicoRegionFPSOverride = 0;
1187 else if (strcmp(var.value, "NTSC") == 0)
1188 PicoRegionFPSOverride = 1;
1189 else if (strcmp(var.value, "PAL") == 0)
1190 PicoRegionFPSOverride = 2;
1193 // Update region, fps and sound flags if needed
1194 if (PicoRegionOverride != OldPicoRegionOverride ||
1195 PicoRegionFPSOverride != OldPicoRegionFPSOverride)
1202 float old_user_vout_width = user_vout_width;
1204 var.key = "picodrive_aspect";
1205 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1206 if (strcmp(var.value, "4/3") == 0)
1207 user_vout_width = VOUT_4_3;
1208 else if (strcmp(var.value, "CRT") == 0)
1209 user_vout_width = VOUT_CRT;
1211 user_vout_width = VOUT_PAR;
1214 if (user_vout_width != old_user_vout_width)
1216 // Update the geometry
1217 struct retro_system_av_info av_info;
1218 retro_get_system_av_info(&av_info);
1219 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1224 var.key = "picodrive_drc";
1225 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1226 if (strcmp(var.value, "enabled") == 0)
1227 PicoOpt |= POPT_EN_DRC;
1229 PicoOpt &= ~POPT_EN_DRC;
1233 if(!ctr_svchack_successful)
1234 PicoOpt &= ~POPT_EN_DRC;
1238 void retro_run(void)
1240 bool updated = false;
1243 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1248 PicoPad[0] = PicoPad[1] = 0;
1249 for (pad = 0; pad < 2; pad++)
1250 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1251 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1252 PicoPad[pad] |= retro_pico_map[i];
1256 video_cb((short *)vout_buf + vout_offset,
1257 vout_width, vout_height, vout_width * 2);
1260 static void check_system_specs(void)
1262 /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
1264 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1267 void retro_init(void)
1269 struct retro_log_callback log;
1273 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1275 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1280 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1283 ctr_svchack_successful = ctr_svchack_init();
1285 sceBlock = getVMBlock();
1288 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1289 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1290 | POPT_EN_32X|POPT_EN_PWM
1291 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1294 if (ctr_svchack_successful)
1296 PicoOpt |= POPT_EN_DRC;
1299 PicoAutoRgnOrder = 0x184; // US, EU, JP
1304 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1306 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1310 PicoDrawSetOutFormat(PDF_RGB555, 0);
1311 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1313 //PicoMessage = plat_status_msg_busy_next;
1314 PicoMCDopenTray = disk_tray_open;
1315 PicoMCDcloseTray = disk_tray_close;
1320 void retro_deinit(void)
1323 linearFree(vout_buf);