2 * libretro core glue for PicoDrive
4 * (C) Daniel De Matteis, 2013
6 * This work is licensed under the terms of MAME license.
7 * See COPYING file in the top-level directory.
10 #define _GNU_SOURCE 1 // mremap
21 #include <sys/types.h>
25 #include <libkern/OSCacheControl.h>
29 #include "3ds/3ds_utils.h"
34 int svcDuplicateHandle(unsigned int* out, unsigned int original);
35 int svcCloseHandle(unsigned int handle);
36 int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
37 unsigned int size, unsigned int type, unsigned int perm);
38 void* linearMemAlign(size_t size, size_t alignment);
39 void linearFree(void* mem);
41 static int ctr_svchack_successful = 0;
44 #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
46 #include <psp2/kernel/sysmem.h>
49 int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
53 #include <pico/pico_int.h>
54 #include <pico/state.h>
55 #include "../common/input_pico.h"
56 #include "../common/version.h"
59 static retro_log_printf_t log_cb;
60 static retro_video_refresh_t video_cb;
61 static retro_input_poll_t input_poll_cb;
62 static retro_input_state_t input_state_cb;
63 static retro_environment_t environ_cb;
64 static retro_audio_sample_batch_t audio_batch_cb;
66 #define VOUT_MAX_WIDTH 320
67 #define VOUT_MAX_HEIGHT 240
69 static const float VOUT_PAR = 0.0;
70 static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
71 static const float VOUT_CRT = (224.0f * 1.29911f);
73 static void *vout_buf;
74 static int vout_width, vout_height, vout_offset;
75 static float user_vout_width = 0.0;
78 static short sndBuffer[2*44100/50];
80 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
83 static void snd_write(int len);
91 /* functions called by the core */
93 void cache_flush_d_inval_i(void *start, void *end)
96 size_t len = (char *)end - (char *)start;
97 #if defined(__BLACKBERRY_QNX__)
98 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
99 #elif defined(__MACH__)
100 sys_dcache_flush(start, len);
101 sys_icache_invalidate(start, len);
103 ctr_flush_invalidate_cache();
105 sceKernelSyncVMDomain(sceBlock, start, len);
107 __clear_cache(start, end);
113 /* mmap() replacement for Windows
115 * Author: Mike Frysinger <vapier@gentoo.org>
116 * Placed into the public domain
120 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
121 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
122 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
123 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
126 #define PROT_READ 0x1
127 #define PROT_WRITE 0x2
128 /* This flag is only available in WinXP+ */
129 #ifdef FILE_MAP_EXECUTE
130 #define PROT_EXEC 0x4
132 #define PROT_EXEC 0x0
133 #define FILE_MAP_EXECUTE 0
136 #define MAP_SHARED 0x01
137 #define MAP_PRIVATE 0x02
138 #define MAP_ANONYMOUS 0x20
139 #define MAP_ANON MAP_ANONYMOUS
140 #define MAP_FAILED ((void *) -1)
142 #ifdef __USE_FILE_OFFSET64
143 # define DWORD_HI(x) (x >> 32)
144 # define DWORD_LO(x) ((x) & 0xffffffff)
146 # define DWORD_HI(x) (0)
147 # define DWORD_LO(x) (x)
150 static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
152 uint32_t flProtect, dwDesiredAccess;
157 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
160 if (!(flags & MAP_ANON) || offset)
162 } else if (flags & MAP_ANON)
165 if (prot & PROT_WRITE) {
166 if (prot & PROT_EXEC)
167 flProtect = PAGE_EXECUTE_READWRITE;
169 flProtect = PAGE_READWRITE;
170 } else if (prot & PROT_EXEC) {
171 if (prot & PROT_READ)
172 flProtect = PAGE_EXECUTE_READ;
173 else if (prot & PROT_EXEC)
174 flProtect = PAGE_EXECUTE;
176 flProtect = PAGE_READONLY;
178 end = length + offset;
181 mmap_fd = INVALID_HANDLE_VALUE;
183 mmap_fd = (HANDLE)_get_osfhandle(fd);
184 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
188 if (prot & PROT_WRITE)
189 dwDesiredAccess = FILE_MAP_WRITE;
191 dwDesiredAccess = FILE_MAP_READ;
192 if (prot & PROT_EXEC)
193 dwDesiredAccess |= FILE_MAP_EXECUTE;
194 if (flags & MAP_PRIVATE)
195 dwDesiredAccess |= FILE_MAP_COPY;
196 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
204 static void munmap(void *addr, size_t length)
206 UnmapViewOfFile(addr);
207 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
209 #elif defined(NO_MMAP)
210 #define PROT_EXEC 0x04
214 #define MAP_PRIVATE 0
215 #define MAP_ANONYMOUS 0
217 void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
222 void munmap(void *base_addr, size_t len)
227 int mprotect(void *addr, size_t len, int prot)
229 /* stub - not really needed at this point since this codepath has no dynarecs */
235 #ifndef MAP_ANONYMOUS
236 #define MAP_ANONYMOUS MAP_ANON
242 unsigned int requested_map;
246 pico_mmap_t pico_mmaps[] = {
252 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
256 if (ctr_svchack_successful)
258 pico_mmap_t* pico_mmap;
260 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
262 if ((pico_mmap->requested_map == addr))
264 unsigned int ptr_aligned, tmp;
265 unsigned int currentHandle;
266 unsigned int perm = 0b011;
271 size = (size + 0xFFF) & ~0xFFF;
272 pico_mmap->buffer = malloc(size + 0x1000);
273 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
275 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
277 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
280 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
284 svcCloseHandle(currentHandle);
285 return (void*)pico_mmap->requested_map;
293 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
295 if (ctr_svchack_successful)
297 pico_mmap_t* pico_mmap;
299 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
301 if ((pico_mmap->requested_map == (unsigned int)ptr))
303 unsigned int ptr_aligned;
304 unsigned int currentHandle;
307 oldsize = (oldsize + 0xFFF) & ~0xFFF;
308 newsize = (newsize + 0xFFF) & ~0xFFF;
309 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
311 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
313 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
315 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
319 pico_mmap->buffer = tmp;
320 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
322 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
324 svcCloseHandle(currentHandle);
331 return realloc(ptr, newsize);
334 void plat_munmap(void *ptr, size_t size)
336 if (ctr_svchack_successful)
338 pico_mmap_t* pico_mmap;
340 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
342 if ((pico_mmap->requested_map == (unsigned int)ptr))
344 unsigned int ptr_aligned;
345 unsigned int currentHandle;
347 size = (size + 0xFFF) & ~0xFFF;
348 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
350 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
352 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
354 svcCloseHandle(currentHandle);
356 free(pico_mmap->buffer);
357 pico_mmap->buffer = NULL;
367 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
369 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
373 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
374 if (ret == MAP_FAILED) {
376 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
380 if (addr != 0 && ret != (void *)addr) {
382 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
394 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
397 void *ret = mremap(ptr, oldsize, newsize, 0);
398 if (ret == MAP_FAILED)
404 size_t preserve_size;
406 preserve_size = oldsize;
407 if (preserve_size > newsize)
408 preserve_size = newsize;
409 tmp = malloc(preserve_size);
412 memcpy(tmp, ptr, preserve_size);
414 munmap(ptr, oldsize);
415 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
416 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
417 if (ret == MAP_FAILED) {
421 memcpy(ret, tmp, preserve_size);
427 void plat_munmap(void *ptr, size_t size)
434 int plat_mem_set_exec(void *ptr, size_t size)
437 int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
438 if (ret == 0 && log_cb)
439 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
442 if (ctr_svchack_successful)
444 unsigned int currentHandle;
445 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
446 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
447 size, MEMOP_PROT, 0b111);
448 svcCloseHandle(currentHandle);
449 ctr_flush_invalidate_cache();
455 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
460 int ret = sceKernelOpenVMDomain();
462 int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
463 if (ret != 0 && log_cb)
464 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
469 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
471 memset(vout_buf, 0, 320 * 240 * 2);
472 vout_width = is_32cols ? 256 : 320;
473 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
475 vout_height = line_count;
476 vout_offset = vout_width * start_line;
478 // Update the geometry
479 struct retro_system_av_info av_info;
480 retro_get_system_av_info(&av_info);
481 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
484 void emu_32x_startup(void)
488 void lprintf(const char *fmt, ...)
493 vsprintf(buffer, fmt, ap);
494 /* TODO - add 'level' param for warning/error messages? */
496 log_cb(RETRO_LOG_INFO, "%s", buffer);
501 void retro_set_environment(retro_environment_t cb)
503 static const struct retro_variable vars[] = {
504 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
505 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
506 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
507 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
508 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
509 { "picodrive_region_fps", "Region FPS; Auto|NTSC|PAL" },
510 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
512 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
519 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
522 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
523 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
524 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
525 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
526 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
528 unsigned retro_api_version(void)
530 return RETRO_API_VERSION;
533 void retro_set_controller_port_device(unsigned port, unsigned device)
537 void retro_get_system_info(struct retro_system_info *info)
539 memset(info, 0, sizeof(*info));
540 info->library_name = "PicoDrive";
541 info->library_version = VERSION;
542 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
543 info->need_fullpath = true;
546 void retro_get_system_av_info(struct retro_system_av_info *info)
548 memset(info, 0, sizeof(*info));
549 info->timing.fps = Pico.m.pal ? 50 : 60;
550 info->timing.sample_rate = 44100;
551 info->geometry.base_width = vout_width;
552 info->geometry.base_height = vout_height;
553 info->geometry.max_width = vout_width;
554 info->geometry.max_height = vout_height;
556 float common_width = vout_width;
557 if (user_vout_width != 0)
558 common_width = user_vout_width;
560 info->geometry.aspect_ratio = common_width / vout_height;
564 struct savestate_state {
565 const char *load_buf;
571 size_t state_read(void *p, size_t size, size_t nmemb, void *file)
573 struct savestate_state *state = file;
574 size_t bsize = size * nmemb;
576 if (state->pos + bsize > state->size) {
578 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
579 state->pos + bsize, state->size);
580 bsize = state->size - state->pos;
585 memcpy(p, state->load_buf + state->pos, bsize);
590 size_t state_write(void *p, size_t size, size_t nmemb, void *file)
592 struct savestate_state *state = file;
593 size_t bsize = size * nmemb;
595 if (state->pos + bsize > state->size) {
597 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
598 state->pos + bsize, state->size);
599 bsize = state->size - state->pos;
604 memcpy(state->save_buf + state->pos, p, bsize);
609 size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
611 struct savestate_state *state = file;
612 size_t bsize = size * nmemb;
618 size_t state_eof(void *file)
620 struct savestate_state *state = file;
622 return state->pos >= state->size;
625 int state_fseek(void *file, long offset, int whence)
627 struct savestate_state *state = file;
634 state->pos += offset;
637 state->pos = state->size + offset;
640 return (int)state->pos;
643 /* savestate sizes vary wildly depending if cd/32x or
644 * carthw is active, so run the whole thing to get size */
645 size_t retro_serialize_size(void)
647 struct savestate_state state = { 0, };
650 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
657 bool retro_serialize(void *data, size_t size)
659 struct savestate_state state = { 0, };
662 state.save_buf = data;
666 ret = PicoStateFP(&state, 1, NULL, state_write,
671 bool retro_unserialize(const void *data, size_t size)
673 struct savestate_state state = { 0, };
676 state.load_buf = data;
680 ret = PicoStateFP(&state, 0, state_read, NULL,
681 state_eof, state_fseek);
686 void retro_cheat_reset(void)
690 void retro_cheat_set(unsigned index, bool enabled, const char *code)
694 /* multidisk support */
695 static bool disk_ejected;
696 static unsigned int disk_current_index;
697 static unsigned int disk_count;
698 static struct disks_state {
702 static bool disk_set_eject_state(bool ejected)
705 disk_ejected = ejected;
709 static bool disk_get_eject_state(void)
714 static unsigned int disk_get_image_index(void)
716 return disk_current_index;
719 static bool disk_set_image_index(unsigned int index)
721 enum cd_img_type cd_type;
724 if (index >= sizeof(disks) / sizeof(disks[0]))
727 if (disks[index].fname == NULL) {
729 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
731 // RetroArch specifies "no disk" with index == count,
732 // so don't fail here..
733 disk_current_index = index;
738 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
742 cd_type = PicoCdCheck(disks[index].fname, NULL);
743 if (cd_type != CIT_NOT_CD)
744 ret = cdd_load(disks[index].fname, cd_type);
747 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
751 disk_current_index = index;
755 static unsigned int disk_get_num_images(void)
760 static bool disk_replace_image_index(unsigned index,
761 const struct retro_game_info *info)
765 if (index >= sizeof(disks) / sizeof(disks[0]))
768 if (disks[index].fname != NULL)
769 free(disks[index].fname);
770 disks[index].fname = NULL;
773 disks[index].fname = strdup(info->path);
774 if (index == disk_current_index)
775 ret = disk_set_image_index(index);
781 static bool disk_add_image_index(void)
783 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
790 static struct retro_disk_control_callback disk_control = {
791 disk_set_eject_state,
792 disk_get_eject_state,
793 disk_get_image_index,
794 disk_set_image_index,
796 disk_replace_image_index,
797 disk_add_image_index,
800 static void disk_tray_open(void)
803 log_cb(RETRO_LOG_INFO, "cd tray open\n");
807 static void disk_tray_close(void)
810 log_cb(RETRO_LOG_INFO, "cd tray close\n");
815 static const char * const biosfiles_us[] = {
816 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
818 static const char * const biosfiles_eu[] = {
819 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
821 static const char * const biosfiles_jp[] = {
822 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
825 static void make_system_path(char *buf, size_t buf_size,
826 const char *name, const char *ext)
828 const char *dir = NULL;
830 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
831 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
834 snprintf(buf, buf_size, "%s%s", name, ext);
838 static const char *find_bios(int *region, const char *cd_fname)
840 const char * const *files;
841 static char path[256];
845 if (*region == 4) { // US
846 files = biosfiles_us;
847 count = sizeof(biosfiles_us) / sizeof(char *);
848 } else if (*region == 8) { // EU
849 files = biosfiles_eu;
850 count = sizeof(biosfiles_eu) / sizeof(char *);
851 } else if (*region == 1 || *region == 2) {
852 files = biosfiles_jp;
853 count = sizeof(biosfiles_jp) / sizeof(char *);
858 for (i = 0; i < count; i++)
860 make_system_path(path, sizeof(path), files[i], ".bin");
861 f = fopen(path, "rb");
865 make_system_path(path, sizeof(path), files[i], ".zip");
866 f = fopen(path, "rb");
873 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
881 static void sram_reset()
888 SRam.changed = '\0' ;
889 SRam.eeprom_type = '\0';
891 SRam.eeprom_bit_cl = '\0';
892 SRam.eeprom_bit_in = '\0';
893 SRam.eeprom_bit_out = '\0';
897 bool retro_load_game(const struct retro_game_info *info)
899 enum media_type_e media_type;
900 static char carthw_path[256];
903 struct retro_input_descriptor desc[] = {
904 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
905 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
906 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
907 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
908 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
909 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
910 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
911 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
912 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
913 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
914 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
915 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
917 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
918 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
919 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
920 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
921 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
922 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
923 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
924 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
925 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
926 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
927 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
928 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
933 struct retro_input_descriptor desc_sms[] = {
934 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
935 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
936 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
937 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
938 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
939 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
940 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
942 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
943 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
944 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
945 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
946 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
947 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
948 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
955 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
956 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
958 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
962 if (info == NULL || info->path == NULL) {
964 log_cb(RETRO_LOG_ERROR, "info->path required\n");
968 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
969 if (disks[i].fname != NULL) {
970 free(disks[i].fname);
971 disks[i].fname = NULL;
975 disk_current_index = 0;
977 disks[0].fname = strdup(info->path);
979 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
981 media_type = PicoLoadMedia(info->path, carthw_path,
984 switch (media_type) {
987 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
991 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
993 case PM_BAD_CD_NO_BIOS:
995 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
999 log_cb(RETRO_LOG_ERROR, "Load error\n");
1005 if (media_type == PM_MARK3)
1006 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1008 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1012 PicoWriteSound = snd_write;
1013 memset(sndBuffer, 0, sizeof(sndBuffer));
1014 PsndOut = sndBuffer;
1020 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1025 void retro_unload_game(void)
1029 unsigned retro_get_region(void)
1031 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1034 void *retro_get_memory_data(unsigned type)
1040 case RETRO_MEMORY_SAVE_RAM:
1041 if (PicoAHW & PAHW_MCD)
1042 data = Pico_mcd->bram;
1046 case RETRO_MEMORY_SYSTEM_RAM:
1047 if (PicoAHW & PAHW_SMS)
1060 size_t retro_get_memory_size(unsigned type)
1067 case RETRO_MEMORY_SAVE_RAM:
1068 if (PicoAHW & PAHW_MCD)
1072 if (Pico.m.frame_count == 0)
1075 // if game doesn't write to sram, don't report it to
1076 // libretro so that RA doesn't write out zeroed .srm
1077 for (i = 0, sum = 0; i < SRam.size; i++)
1078 sum |= SRam.data[i];
1080 return (sum != 0) ? SRam.size : 0;
1082 case RETRO_MEMORY_SYSTEM_RAM:
1083 if (PicoAHW & PAHW_SMS)
1084 return sizeof(Pico.vramb);
1086 return sizeof(Pico.ram);
1094 void retro_reset(void)
1099 static const unsigned short retro_pico_map[] = {
1113 #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1115 static void snd_write(int len)
1117 audio_batch_cb(PsndOut, len / 4);
1120 static enum input_device input_name_to_val(const char *name)
1122 if (strcmp(name, "3 button pad") == 0)
1123 return PICO_INPUT_PAD_3BTN;
1124 if (strcmp(name, "6 button pad") == 0)
1125 return PICO_INPUT_PAD_6BTN;
1126 if (strcmp(name, "None") == 0)
1127 return PICO_INPUT_NOTHING;
1130 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1131 return PICO_INPUT_PAD_3BTN;
1134 static void update_variables(void)
1136 struct retro_variable var;
1139 var.key = "picodrive_input1";
1140 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1141 PicoSetInputDevice(0, input_name_to_val(var.value));
1144 var.key = "picodrive_input2";
1145 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1146 PicoSetInputDevice(1, input_name_to_val(var.value));
1149 var.key = "picodrive_sprlim";
1150 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1151 if (strcmp(var.value, "enabled") == 0)
1152 PicoOpt |= POPT_DIS_SPRITE_LIM;
1154 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1158 var.key = "picodrive_ramcart";
1159 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1160 if (strcmp(var.value, "enabled") == 0)
1161 PicoOpt |= POPT_EN_MCD_RAMCART;
1163 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1166 int OldPicoRegionOverride = PicoRegionOverride;
1168 var.key = "picodrive_region";
1169 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1170 if (strcmp(var.value, "Auto") == 0)
1171 PicoRegionOverride = 0;
1172 else if (strcmp(var.value, "Japan NTSC") == 0)
1173 PicoRegionOverride = 1;
1174 else if (strcmp(var.value, "Japan PAL") == 0)
1175 PicoRegionOverride = 2;
1176 else if (strcmp(var.value, "US") == 0)
1177 PicoRegionOverride = 4;
1178 else if (strcmp(var.value, "Europe") == 0)
1179 PicoRegionOverride = 8;
1182 int OldPicoRegionFPSOverride = PicoRegionFPSOverride;
1184 var.key = "picodrive_region_fps";
1185 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1186 if (strcmp(var.value, "Auto") == 0)
1187 PicoRegionFPSOverride = 0;
1188 else if (strcmp(var.value, "NTSC") == 0)
1189 PicoRegionFPSOverride = 1;
1190 else if (strcmp(var.value, "PAL") == 0)
1191 PicoRegionFPSOverride = 2;
1194 // Update region, fps and sound flags if needed
1195 if (PicoRegionOverride != OldPicoRegionOverride ||
1196 PicoRegionFPSOverride != OldPicoRegionFPSOverride)
1203 float old_user_vout_width = user_vout_width;
1205 var.key = "picodrive_aspect";
1206 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1207 if (strcmp(var.value, "4/3") == 0)
1208 user_vout_width = VOUT_4_3;
1209 else if (strcmp(var.value, "CRT") == 0)
1210 user_vout_width = VOUT_CRT;
1212 user_vout_width = VOUT_PAR;
1215 if (user_vout_width != old_user_vout_width)
1217 // Update the geometry
1218 struct retro_system_av_info av_info;
1219 retro_get_system_av_info(&av_info);
1220 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1225 var.key = "picodrive_drc";
1226 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1227 if (strcmp(var.value, "enabled") == 0)
1228 PicoOpt |= POPT_EN_DRC;
1230 PicoOpt &= ~POPT_EN_DRC;
1234 if(!ctr_svchack_successful)
1235 PicoOpt &= ~POPT_EN_DRC;
1239 void retro_run(void)
1241 bool updated = false;
1244 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1249 PicoPad[0] = PicoPad[1] = 0;
1250 for (pad = 0; pad < 2; pad++)
1251 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1252 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1253 PicoPad[pad] |= retro_pico_map[i];
1257 video_cb((short *)vout_buf + vout_offset,
1258 vout_width, vout_height, vout_width * 2);
1261 static void check_system_specs(void)
1263 /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
1265 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1268 void retro_init(void)
1270 struct retro_log_callback log;
1274 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1276 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1281 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1284 ctr_svchack_successful = ctr_svchack_init();
1286 sceBlock = getVMBlock();
1289 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1290 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1291 | POPT_EN_32X|POPT_EN_PWM
1292 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1295 if (ctr_svchack_successful)
1297 PicoOpt |= POPT_EN_DRC;
1300 PicoAutoRgnOrder = 0x184; // US, EU, JP
1305 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1307 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1311 PicoDrawSetOutFormat(PDF_RGB555, 0);
1312 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1314 //PicoMessage = plat_status_msg_busy_next;
1315 PicoMCDopenTray = disk_tray_open;
1316 PicoMCDcloseTray = disk_tray_close;
1321 void retro_deinit(void)
1324 linearFree(vout_buf);