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
22 #include <sys/types.h>
26 #include <libkern/OSCacheControl.h>
30 #include "3ds/3ds_utils.h"
35 int svcDuplicateHandle(unsigned int* out, unsigned int original);
36 int svcCloseHandle(unsigned int handle);
37 int svcControlProcessMemory(unsigned int process, void* addr0, void* addr1,
38 unsigned int size, unsigned int type, unsigned int perm);
39 void* linearMemAlign(size_t size, size_t alignment);
40 void linearFree(void* mem);
42 static int ctr_svchack_successful = 0;
45 #define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
47 #include <psp2/kernel/sysmem.h>
50 int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
54 #include <pico/pico_int.h>
55 #include <pico/state.h>
56 #include <pico/patch.h>
57 #include "../common/input_pico.h"
58 #include "../common/version.h"
61 static retro_log_printf_t log_cb;
62 static retro_video_refresh_t video_cb;
63 static retro_input_poll_t input_poll_cb;
64 static retro_input_state_t input_state_cb;
65 static retro_environment_t environ_cb;
66 static retro_audio_sample_batch_t audio_batch_cb;
68 #define VOUT_MAX_WIDTH 320
69 #define VOUT_MAX_HEIGHT 240
71 static const float VOUT_PAR = 0.0;
72 static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
73 static const float VOUT_CRT = (224.0f * 1.29911f);
75 bool show_overscan = false;
77 static void *vout_buf;
78 static int vout_width, vout_height, vout_offset;
79 static float user_vout_width = 0.0;
82 static short sndBuffer[2*44100/50];
84 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
87 static void snd_write(int len);
95 /* functions called by the core */
97 void cache_flush_d_inval_i(void *start, void *end)
100 size_t len = (char *)end - (char *)start;
101 #if defined(__BLACKBERRY_QNX__)
102 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
103 #elif defined(__MACH__)
104 sys_dcache_flush(start, len);
105 sys_icache_invalidate(start, len);
107 ctr_flush_invalidate_cache();
109 sceKernelSyncVMDomain(sceBlock, start, len);
111 __clear_cache(start, end);
117 /* mmap() replacement for Windows
119 * Author: Mike Frysinger <vapier@gentoo.org>
120 * Placed into the public domain
124 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
125 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
126 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
127 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
130 #define PROT_READ 0x1
131 #define PROT_WRITE 0x2
132 /* This flag is only available in WinXP+ */
133 #ifdef FILE_MAP_EXECUTE
134 #define PROT_EXEC 0x4
136 #define PROT_EXEC 0x0
137 #define FILE_MAP_EXECUTE 0
140 #define MAP_SHARED 0x01
141 #define MAP_PRIVATE 0x02
142 #define MAP_ANONYMOUS 0x20
143 #define MAP_ANON MAP_ANONYMOUS
144 #define MAP_FAILED ((void *) -1)
146 #ifdef __USE_FILE_OFFSET64
147 # define DWORD_HI(x) (x >> 32)
148 # define DWORD_LO(x) ((x) & 0xffffffff)
150 # define DWORD_HI(x) (0)
151 # define DWORD_LO(x) (x)
154 static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
156 uint32_t flProtect, dwDesiredAccess;
161 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
164 if (!(flags & MAP_ANON) || offset)
166 } else if (flags & MAP_ANON)
169 if (prot & PROT_WRITE) {
170 if (prot & PROT_EXEC)
171 flProtect = PAGE_EXECUTE_READWRITE;
173 flProtect = PAGE_READWRITE;
174 } else if (prot & PROT_EXEC) {
175 if (prot & PROT_READ)
176 flProtect = PAGE_EXECUTE_READ;
177 else if (prot & PROT_EXEC)
178 flProtect = PAGE_EXECUTE;
180 flProtect = PAGE_READONLY;
182 end = length + offset;
185 mmap_fd = INVALID_HANDLE_VALUE;
187 mmap_fd = (HANDLE)_get_osfhandle(fd);
188 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
192 if (prot & PROT_WRITE)
193 dwDesiredAccess = FILE_MAP_WRITE;
195 dwDesiredAccess = FILE_MAP_READ;
196 if (prot & PROT_EXEC)
197 dwDesiredAccess |= FILE_MAP_EXECUTE;
198 if (flags & MAP_PRIVATE)
199 dwDesiredAccess |= FILE_MAP_COPY;
200 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
208 static void munmap(void *addr, size_t length)
210 UnmapViewOfFile(addr);
211 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
213 #elif defined(NO_MMAP)
214 #define PROT_EXEC 0x04
218 #define MAP_PRIVATE 0
219 #define MAP_ANONYMOUS 0
221 void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
226 void munmap(void *base_addr, size_t len)
231 int mprotect(void *addr, size_t len, int prot)
233 /* stub - not really needed at this point since this codepath has no dynarecs */
239 #ifndef MAP_ANONYMOUS
240 #define MAP_ANONYMOUS MAP_ANON
246 unsigned int requested_map;
250 pico_mmap_t pico_mmaps[] = {
256 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
260 if (ctr_svchack_successful)
262 pico_mmap_t* pico_mmap;
264 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
266 if ((pico_mmap->requested_map == addr))
268 unsigned int ptr_aligned, tmp;
269 unsigned int currentHandle;
270 unsigned int perm = 0b011;
275 size = (size + 0xFFF) & ~0xFFF;
276 pico_mmap->buffer = malloc(size + 0x1000);
277 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
279 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
281 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
284 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
288 svcCloseHandle(currentHandle);
289 return (void*)pico_mmap->requested_map;
297 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
299 if (ctr_svchack_successful)
301 pico_mmap_t* pico_mmap;
303 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
305 if ((pico_mmap->requested_map == (unsigned int)ptr))
307 unsigned int ptr_aligned;
308 unsigned int currentHandle;
311 oldsize = (oldsize + 0xFFF) & ~0xFFF;
312 newsize = (newsize + 0xFFF) & ~0xFFF;
313 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
315 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
317 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
319 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
323 pico_mmap->buffer = tmp;
324 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
326 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
328 svcCloseHandle(currentHandle);
335 return realloc(ptr, newsize);
338 void plat_munmap(void *ptr, size_t size)
340 if (ctr_svchack_successful)
342 pico_mmap_t* pico_mmap;
344 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
346 if ((pico_mmap->requested_map == (unsigned int)ptr))
348 unsigned int ptr_aligned;
349 unsigned int currentHandle;
351 size = (size + 0xFFF) & ~0xFFF;
352 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
354 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
356 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
358 svcCloseHandle(currentHandle);
360 free(pico_mmap->buffer);
361 pico_mmap->buffer = NULL;
371 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
373 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
377 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
378 if (ret == MAP_FAILED) {
380 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
384 if (addr != 0 && ret != (void *)addr) {
386 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
398 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
401 void *ret = mremap(ptr, oldsize, newsize, 0);
402 if (ret == MAP_FAILED)
408 size_t preserve_size;
410 preserve_size = oldsize;
411 if (preserve_size > newsize)
412 preserve_size = newsize;
413 tmp = malloc(preserve_size);
416 memcpy(tmp, ptr, preserve_size);
418 munmap(ptr, oldsize);
419 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
420 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
421 if (ret == MAP_FAILED) {
425 memcpy(ret, tmp, preserve_size);
431 void plat_munmap(void *ptr, size_t size)
438 int plat_mem_set_exec(void *ptr, size_t size)
441 int ret = VirtualProtect(ptr,size,PAGE_EXECUTE_READWRITE,0);
442 if (ret == 0 && log_cb)
443 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, 0);
446 if (ctr_svchack_successful)
448 unsigned int currentHandle;
449 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
450 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
451 size, MEMOP_PROT, 0b111);
452 svcCloseHandle(currentHandle);
453 ctr_flush_invalidate_cache();
459 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
464 int ret = sceKernelOpenVMDomain();
466 int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
467 if (ret != 0 && log_cb)
468 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
473 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
475 memset(vout_buf, 0, 320 * 240 * 2);
476 vout_width = is_32cols ? 256 : 320;
477 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
478 if (show_overscan == true) line_count += 16;
479 if (show_overscan == true) start_line -= 8;
481 vout_height = line_count;
482 vout_offset = vout_width * start_line;
484 // Update the geometry
485 struct retro_system_av_info av_info;
486 retro_get_system_av_info(&av_info);
487 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
490 void emu_32x_startup(void)
494 void lprintf(const char *fmt, ...)
499 vsprintf(buffer, fmt, ap);
500 /* TODO - add 'level' param for warning/error messages? */
502 log_cb(RETRO_LOG_INFO, "%s", buffer);
507 void retro_set_environment(retro_environment_t cb)
509 static const struct retro_variable vars[] = {
510 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
511 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
512 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
513 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
514 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
515 { "picodrive_region_fps", "Region FPS; Auto|NTSC|PAL" },
516 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
517 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
519 { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
526 cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
529 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
530 void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; }
531 void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; }
532 void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
533 void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
535 unsigned retro_api_version(void)
537 return RETRO_API_VERSION;
540 void retro_set_controller_port_device(unsigned port, unsigned device)
544 void retro_get_system_info(struct retro_system_info *info)
546 memset(info, 0, sizeof(*info));
547 info->library_name = "PicoDrive";
549 #define GIT_VERSION ""
551 info->library_version = VERSION GIT_VERSION;
552 info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
553 info->need_fullpath = true;
556 void retro_get_system_av_info(struct retro_system_av_info *info)
558 memset(info, 0, sizeof(*info));
559 info->timing.fps = Pico.m.pal ? 50 : 60;
560 info->timing.sample_rate = 44100;
561 info->geometry.base_width = vout_width;
562 info->geometry.base_height = vout_height;
563 info->geometry.max_width = vout_width;
564 info->geometry.max_height = vout_height;
566 float common_width = vout_width;
567 if (user_vout_width != 0)
568 common_width = user_vout_width;
570 info->geometry.aspect_ratio = common_width / vout_height;
574 struct savestate_state {
575 const char *load_buf;
581 size_t state_read(void *p, size_t size, size_t nmemb, void *file)
583 struct savestate_state *state = file;
584 size_t bsize = size * nmemb;
586 if (state->pos + bsize > state->size) {
588 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
589 state->pos + bsize, state->size);
590 bsize = state->size - state->pos;
595 memcpy(p, state->load_buf + state->pos, bsize);
600 size_t state_write(void *p, size_t size, size_t nmemb, void *file)
602 struct savestate_state *state = file;
603 size_t bsize = size * nmemb;
605 if (state->pos + bsize > state->size) {
607 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
608 state->pos + bsize, state->size);
609 bsize = state->size - state->pos;
614 memcpy(state->save_buf + state->pos, p, bsize);
619 size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
621 struct savestate_state *state = file;
622 size_t bsize = size * nmemb;
628 size_t state_eof(void *file)
630 struct savestate_state *state = file;
632 return state->pos >= state->size;
635 int state_fseek(void *file, long offset, int whence)
637 struct savestate_state *state = file;
644 state->pos += offset;
647 state->pos = state->size + offset;
650 return (int)state->pos;
653 /* savestate sizes vary wildly depending if cd/32x or
654 * carthw is active, so run the whole thing to get size */
655 size_t retro_serialize_size(void)
657 struct savestate_state state = { 0, };
660 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
667 bool retro_serialize(void *data, size_t size)
669 struct savestate_state state = { 0, };
672 state.save_buf = data;
676 ret = PicoStateFP(&state, 1, NULL, state_write,
681 bool retro_unserialize(const void *data, size_t size)
683 struct savestate_state state = { 0, };
686 state.load_buf = data;
690 ret = PicoStateFP(&state, 0, state_read, NULL,
691 state_eof, state_fseek);
701 extern void decode(char *buff, patch *dest);
702 extern uint16_t m68k_read16(uint32_t a);
703 extern void m68k_write16(uint32_t a, uint16_t d);
705 void retro_cheat_reset(void)
710 for (i = 0; i < PicoPatchCount; i++)
712 addr = PicoPatches[i].addr;
713 if (addr < Pico.romsize) {
714 if (PicoPatches[i].active)
715 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
717 if (PicoPatches[i].active)
718 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
725 void retro_cheat_set(unsigned index, bool enabled, const char *code)
733 strcpy(codeCopy,code);
735 if (strstr(code,"+")){
737 buff = strtok(codeCopy,"+");
745 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
747 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
751 /* code was good, add it */
752 if (array_len < PicoPatchCount + 1)
757 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
759 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
764 strcpy(PicoPatches[PicoPatchCount].code, buff);
766 PicoPatches[PicoPatchCount].active = enabled;
767 PicoPatches[PicoPatchCount].addr = pt.addr;
768 PicoPatches[PicoPatchCount].data = pt.data;
769 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
770 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
772 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
780 /* multidisk support */
781 static bool disk_ejected;
782 static unsigned int disk_current_index;
783 static unsigned int disk_count;
784 static struct disks_state {
788 static bool disk_set_eject_state(bool ejected)
791 disk_ejected = ejected;
795 static bool disk_get_eject_state(void)
800 static unsigned int disk_get_image_index(void)
802 return disk_current_index;
805 static bool disk_set_image_index(unsigned int index)
807 enum cd_img_type cd_type;
810 if (index >= sizeof(disks) / sizeof(disks[0]))
813 if (disks[index].fname == NULL) {
815 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
817 // RetroArch specifies "no disk" with index == count,
818 // so don't fail here..
819 disk_current_index = index;
824 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
828 cd_type = PicoCdCheck(disks[index].fname, NULL);
829 if (cd_type != CIT_NOT_CD)
830 ret = cdd_load(disks[index].fname, cd_type);
833 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
837 disk_current_index = index;
841 static unsigned int disk_get_num_images(void)
846 static bool disk_replace_image_index(unsigned index,
847 const struct retro_game_info *info)
851 if (index >= sizeof(disks) / sizeof(disks[0]))
854 if (disks[index].fname != NULL)
855 free(disks[index].fname);
856 disks[index].fname = NULL;
859 disks[index].fname = strdup(info->path);
860 if (index == disk_current_index)
861 ret = disk_set_image_index(index);
867 static bool disk_add_image_index(void)
869 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
876 static struct retro_disk_control_callback disk_control = {
877 disk_set_eject_state,
878 disk_get_eject_state,
879 disk_get_image_index,
880 disk_set_image_index,
882 disk_replace_image_index,
883 disk_add_image_index,
886 static void disk_tray_open(void)
889 log_cb(RETRO_LOG_INFO, "cd tray open\n");
893 static void disk_tray_close(void)
896 log_cb(RETRO_LOG_INFO, "cd tray close\n");
901 static const char * const biosfiles_us[] = {
902 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
904 static const char * const biosfiles_eu[] = {
905 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
907 static const char * const biosfiles_jp[] = {
908 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
911 static void make_system_path(char *buf, size_t buf_size,
912 const char *name, const char *ext)
914 const char *dir = NULL;
916 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
917 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
920 snprintf(buf, buf_size, "%s%s", name, ext);
924 static const char *find_bios(int *region, const char *cd_fname)
926 const char * const *files;
927 static char path[256];
931 if (*region == 4) { // US
932 files = biosfiles_us;
933 count = sizeof(biosfiles_us) / sizeof(char *);
934 } else if (*region == 8) { // EU
935 files = biosfiles_eu;
936 count = sizeof(biosfiles_eu) / sizeof(char *);
937 } else if (*region == 1 || *region == 2) {
938 files = biosfiles_jp;
939 count = sizeof(biosfiles_jp) / sizeof(char *);
944 for (i = 0; i < count; i++)
946 make_system_path(path, sizeof(path), files[i], ".bin");
947 f = fopen(path, "rb");
951 make_system_path(path, sizeof(path), files[i], ".zip");
952 f = fopen(path, "rb");
959 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
967 static void sram_reset()
974 SRam.changed = '\0' ;
975 SRam.eeprom_type = '\0';
977 SRam.eeprom_bit_cl = '\0';
978 SRam.eeprom_bit_in = '\0';
979 SRam.eeprom_bit_out = '\0';
983 bool retro_load_game(const struct retro_game_info *info)
985 enum media_type_e media_type;
986 static char carthw_path[256];
989 struct retro_input_descriptor desc[] = {
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
992 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
993 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
994 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
995 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
996 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
997 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
998 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
999 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1000 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1001 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1005 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1006 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1007 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
1008 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
1009 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1010 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1011 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1012 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1013 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1014 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1019 struct retro_input_descriptor desc_sms[] = {
1020 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1021 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1022 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1023 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1024 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1025 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1026 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1028 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1029 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1030 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1031 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1032 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1033 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1034 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1041 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1042 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1044 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1048 if (info == NULL || info->path == NULL) {
1050 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1054 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1055 if (disks[i].fname != NULL) {
1056 free(disks[i].fname);
1057 disks[i].fname = NULL;
1061 disk_current_index = 0;
1063 disks[0].fname = strdup(info->path);
1065 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1067 media_type = PicoLoadMedia(info->path, carthw_path,
1070 switch (media_type) {
1073 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1077 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1079 case PM_BAD_CD_NO_BIOS:
1081 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1085 log_cb(RETRO_LOG_ERROR, "Load error\n");
1091 if (media_type == PM_MARK3)
1092 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1094 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1098 PicoWriteSound = snd_write;
1099 memset(sndBuffer, 0, sizeof(sndBuffer));
1100 PsndOut = sndBuffer;
1106 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1111 void retro_unload_game(void)
1115 unsigned retro_get_region(void)
1117 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1120 void *retro_get_memory_data(unsigned type)
1126 case RETRO_MEMORY_SAVE_RAM:
1127 if (PicoAHW & PAHW_MCD)
1128 data = Pico_mcd->bram;
1132 case RETRO_MEMORY_SYSTEM_RAM:
1133 if (PicoAHW & PAHW_SMS)
1146 size_t retro_get_memory_size(unsigned type)
1153 case RETRO_MEMORY_SAVE_RAM:
1154 if (PicoAHW & PAHW_MCD)
1158 if (Pico.m.frame_count == 0)
1161 // if game doesn't write to sram, don't report it to
1162 // libretro so that RA doesn't write out zeroed .srm
1163 for (i = 0, sum = 0; i < SRam.size; i++)
1164 sum |= SRam.data[i];
1166 return (sum != 0) ? SRam.size : 0;
1168 case RETRO_MEMORY_SYSTEM_RAM:
1169 if (PicoAHW & PAHW_SMS)
1170 return sizeof(Pico.vramb);
1172 return sizeof(Pico.ram);
1180 void retro_reset(void)
1185 static const unsigned short retro_pico_map[] = {
1199 #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1201 static void snd_write(int len)
1203 audio_batch_cb(PsndOut, len / 4);
1206 static enum input_device input_name_to_val(const char *name)
1208 if (strcmp(name, "3 button pad") == 0)
1209 return PICO_INPUT_PAD_3BTN;
1210 if (strcmp(name, "6 button pad") == 0)
1211 return PICO_INPUT_PAD_6BTN;
1212 if (strcmp(name, "None") == 0)
1213 return PICO_INPUT_NOTHING;
1216 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1217 return PICO_INPUT_PAD_3BTN;
1220 static void update_variables(void)
1222 struct retro_variable var;
1225 var.key = "picodrive_input1";
1226 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1227 PicoSetInputDevice(0, input_name_to_val(var.value));
1230 var.key = "picodrive_input2";
1231 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1232 PicoSetInputDevice(1, input_name_to_val(var.value));
1235 var.key = "picodrive_sprlim";
1236 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1237 if (strcmp(var.value, "enabled") == 0)
1238 PicoOpt |= POPT_DIS_SPRITE_LIM;
1240 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1244 var.key = "picodrive_ramcart";
1245 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1246 if (strcmp(var.value, "enabled") == 0)
1247 PicoOpt |= POPT_EN_MCD_RAMCART;
1249 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1252 int OldPicoRegionOverride = PicoRegionOverride;
1254 var.key = "picodrive_region";
1255 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1256 if (strcmp(var.value, "Auto") == 0)
1257 PicoRegionOverride = 0;
1258 else if (strcmp(var.value, "Japan NTSC") == 0)
1259 PicoRegionOverride = 1;
1260 else if (strcmp(var.value, "Japan PAL") == 0)
1261 PicoRegionOverride = 2;
1262 else if (strcmp(var.value, "US") == 0)
1263 PicoRegionOverride = 4;
1264 else if (strcmp(var.value, "Europe") == 0)
1265 PicoRegionOverride = 8;
1268 int OldPicoRegionFPSOverride = PicoRegionFPSOverride;
1270 var.key = "picodrive_region_fps";
1271 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1272 if (strcmp(var.value, "Auto") == 0)
1273 PicoRegionFPSOverride = 0;
1274 else if (strcmp(var.value, "NTSC") == 0)
1275 PicoRegionFPSOverride = 1;
1276 else if (strcmp(var.value, "PAL") == 0)
1277 PicoRegionFPSOverride = 2;
1280 // Update region, fps and sound flags if needed
1281 if (PicoRegionOverride != OldPicoRegionOverride ||
1282 PicoRegionFPSOverride != OldPicoRegionFPSOverride)
1289 float old_user_vout_width = user_vout_width;
1291 var.key = "picodrive_aspect";
1292 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1293 if (strcmp(var.value, "4/3") == 0)
1294 user_vout_width = VOUT_4_3;
1295 else if (strcmp(var.value, "CRT") == 0)
1296 user_vout_width = VOUT_CRT;
1298 user_vout_width = VOUT_PAR;
1302 var.key = "picodrive_overscan";
1303 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1304 if (strcmp(var.value, "enabled") == 0)
1305 show_overscan = true;
1307 show_overscan = false;
1310 if (user_vout_width != old_user_vout_width)
1312 // Update the geometry
1313 struct retro_system_av_info av_info;
1314 retro_get_system_av_info(&av_info);
1315 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1320 var.key = "picodrive_drc";
1321 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1322 if (strcmp(var.value, "enabled") == 0)
1323 PicoOpt |= POPT_EN_DRC;
1325 PicoOpt &= ~POPT_EN_DRC;
1329 if(!ctr_svchack_successful)
1330 PicoOpt &= ~POPT_EN_DRC;
1334 void retro_run(void)
1336 bool updated = false;
1339 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1344 PicoPad[0] = PicoPad[1] = 0;
1345 for (pad = 0; pad < 2; pad++)
1346 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1347 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1348 PicoPad[pad] |= retro_pico_map[i];
1353 video_cb((short *)vout_buf + vout_offset,
1354 vout_width, vout_height, vout_width * 2);
1357 static void check_system_specs(void)
1359 /* TODO - set different performance level for 32X - 6 for ARM dynarec, higher for interpreter core */
1361 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1364 void retro_init(void)
1366 struct retro_log_callback log;
1370 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1372 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1377 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1380 ctr_svchack_successful = ctr_svchack_init();
1382 sceBlock = getVMBlock();
1385 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1386 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1387 | POPT_EN_32X|POPT_EN_PWM
1388 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1391 if (ctr_svchack_successful)
1393 PicoOpt |= POPT_EN_DRC;
1396 PicoAutoRgnOrder = 0x184; // US, EU, JP
1401 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1403 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1407 PicoDrawSetOutFormat(PDF_RGB555, 0);
1408 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1410 //PicoMessage = plat_status_msg_busy_next;
1411 PicoMCDopenTray = disk_tray_open;
1412 PicoMCDcloseTray = disk_tray_close;
1417 void retro_deinit(void)
1420 linearFree(vout_buf);