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;
102 #if defined(__BLACKBERRY_QNX__)
103 msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
104 #elif defined(__MACH__)
105 sys_dcache_flush(start, len);
106 sys_icache_invalidate(start, len);
108 ctr_flush_invalidate_cache();
110 sceKernelSyncVMDomain(sceBlock, start, len);
112 __clear_cache(start, end);
118 /* mmap() replacement for Windows
120 * Author: Mike Frysinger <vapier@gentoo.org>
121 * Placed into the public domain
125 * CreateFileMapping: http://msdn.microsoft.com/en-us/library/aa366537(VS.85).aspx
126 * CloseHandle: http://msdn.microsoft.com/en-us/library/ms724211(VS.85).aspx
127 * MapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366761(VS.85).aspx
128 * UnmapViewOfFile: http://msdn.microsoft.com/en-us/library/aa366882(VS.85).aspx
131 #define PROT_READ 0x1
132 #define PROT_WRITE 0x2
133 /* This flag is only available in WinXP+ */
134 #ifdef FILE_MAP_EXECUTE
135 #define PROT_EXEC 0x4
137 #define PROT_EXEC 0x0
138 #define FILE_MAP_EXECUTE 0
141 #define MAP_SHARED 0x01
142 #define MAP_PRIVATE 0x02
143 #define MAP_ANONYMOUS 0x20
144 #define MAP_ANON MAP_ANONYMOUS
145 #define MAP_FAILED ((void *) -1)
147 #ifdef __USE_FILE_OFFSET64
148 # define DWORD_HI(x) (x >> 32)
149 # define DWORD_LO(x) ((x) & 0xffffffff)
151 # define DWORD_HI(x) (0)
152 # define DWORD_LO(x) (x)
155 static void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)
157 uint32_t flProtect, dwDesiredAccess;
162 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC))
165 if (!(flags & MAP_ANON) || offset)
167 } else if (flags & MAP_ANON)
170 if (prot & PROT_WRITE) {
171 if (prot & PROT_EXEC)
172 flProtect = PAGE_EXECUTE_READWRITE;
174 flProtect = PAGE_READWRITE;
175 } else if (prot & PROT_EXEC) {
176 if (prot & PROT_READ)
177 flProtect = PAGE_EXECUTE_READ;
178 else if (prot & PROT_EXEC)
179 flProtect = PAGE_EXECUTE;
181 flProtect = PAGE_READONLY;
183 end = length + offset;
186 mmap_fd = INVALID_HANDLE_VALUE;
188 mmap_fd = (HANDLE)_get_osfhandle(fd);
189 h = CreateFileMapping(mmap_fd, NULL, flProtect, DWORD_HI(end), DWORD_LO(end), NULL);
193 if (prot & PROT_WRITE)
194 dwDesiredAccess = FILE_MAP_WRITE;
196 dwDesiredAccess = FILE_MAP_READ;
197 if (prot & PROT_EXEC)
198 dwDesiredAccess |= FILE_MAP_EXECUTE;
199 if (flags & MAP_PRIVATE)
200 dwDesiredAccess |= FILE_MAP_COPY;
201 ret = MapViewOfFile(h, dwDesiredAccess, DWORD_HI(offset), DWORD_LO(offset), length);
209 static void munmap(void *addr, size_t length)
211 UnmapViewOfFile(addr);
212 /* ruh-ro, we leaked handle from CreateFileMapping() ... */
214 #elif defined(NO_MMAP)
215 #define PROT_EXEC 0x04
219 #define MAP_PRIVATE 0
220 #define MAP_ANONYMOUS 0
222 void* mmap(void *desired_addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off)
227 void munmap(void *base_addr, size_t len)
232 int mprotect(void *addr, size_t len, int prot)
234 /* stub - not really needed at this point since this codepath has no dynarecs */
240 #ifndef MAP_ANONYMOUS
241 #define MAP_ANONYMOUS MAP_ANON
247 unsigned int requested_map;
251 pico_mmap_t pico_mmaps[] = {
257 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
261 if (ctr_svchack_successful)
263 pico_mmap_t* pico_mmap;
265 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
267 if ((pico_mmap->requested_map == addr))
269 unsigned int ptr_aligned, tmp;
270 unsigned int currentHandle;
271 unsigned int perm = 0b011;
276 size = (size + 0xFFF) & ~0xFFF;
277 pico_mmap->buffer = malloc(size + 0x1000);
278 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
280 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
282 if(svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, size, MEMOP_MAP, perm) < 0)
285 log_cb(RETRO_LOG_ERROR, "could not map memory @0x%08X\n", pico_mmap->requested_map);
289 svcCloseHandle(currentHandle);
290 return (void*)pico_mmap->requested_map;
298 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
300 if (ctr_svchack_successful)
302 pico_mmap_t* pico_mmap;
304 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
306 if ((pico_mmap->requested_map == (unsigned int)ptr))
308 unsigned int ptr_aligned;
309 unsigned int currentHandle;
312 oldsize = (oldsize + 0xFFF) & ~0xFFF;
313 newsize = (newsize + 0xFFF) & ~0xFFF;
314 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
316 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
318 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, oldsize, MEMOP_UNMAP, 0b011);
320 tmp = realloc(pico_mmap->buffer, newsize + 0x1000);
324 pico_mmap->buffer = tmp;
325 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
327 svcControlProcessMemory(currentHandle, pico_mmap->requested_map, ptr_aligned, newsize, MEMOP_MAP, 0x3);
329 svcCloseHandle(currentHandle);
336 return realloc(ptr, newsize);
339 void plat_munmap(void *ptr, size_t size)
341 if (ctr_svchack_successful)
343 pico_mmap_t* pico_mmap;
345 for (pico_mmap = pico_mmaps; pico_mmap->requested_map; pico_mmap++)
347 if ((pico_mmap->requested_map == (unsigned int)ptr))
349 unsigned int ptr_aligned;
350 unsigned int currentHandle;
352 size = (size + 0xFFF) & ~0xFFF;
353 ptr_aligned = (((unsigned int)pico_mmap->buffer) + 0xFFF) & ~0xFFF;
355 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
357 svcControlProcessMemory(currentHandle, (void*)pico_mmap->requested_map, (void*)ptr_aligned, size, MEMOP_UNMAP, 0b011);
359 svcCloseHandle(currentHandle);
361 free(pico_mmap->buffer);
362 pico_mmap->buffer = NULL;
372 void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
374 int flags = MAP_PRIVATE | MAP_ANONYMOUS;
378 ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
379 if (ret == MAP_FAILED) {
381 log_cb(RETRO_LOG_ERROR, "mmap(%08lx, %zd) failed: %d\n", addr, size, errno);
385 if (addr != 0 && ret != (void *)addr) {
387 log_cb(RETRO_LOG_WARN, "warning: wanted to map @%08lx, got %p\n",
399 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
402 void *ret = mremap(ptr, oldsize, newsize, 0);
403 if (ret == MAP_FAILED)
409 size_t preserve_size;
411 preserve_size = oldsize;
412 if (preserve_size > newsize)
413 preserve_size = newsize;
414 tmp = malloc(preserve_size);
417 memcpy(tmp, ptr, preserve_size);
419 munmap(ptr, oldsize);
420 ret = mmap(ptr, newsize, PROT_READ | PROT_WRITE,
421 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
422 if (ret == MAP_FAILED) {
426 memcpy(ret, tmp, preserve_size);
432 void plat_munmap(void *ptr, size_t size)
439 // if NULL is returned, static buffer is used
440 void *plat_mem_get_for_drc(size_t size)
444 sceKernelGetMemBlockBase(sceBlock, &mem);
449 int plat_mem_set_exec(void *ptr, size_t size)
453 ret = VirtualProtect(ptr, size, PAGE_EXECUTE_READWRITE, 0);
454 if (ret == 0 && log_cb)
455 log_cb(RETRO_LOG_ERROR, "VirtualProtect(%p, %d) failed: %d\n", ptr, (int)size,
458 if (ctr_svchack_successful)
460 unsigned int currentHandle;
461 svcDuplicateHandle(¤tHandle, 0xFFFF8001);
462 ret = svcControlProcessMemory(currentHandle, ptr, 0x0,
463 size, MEMOP_PROT, 0b111);
464 svcCloseHandle(currentHandle);
465 ctr_flush_invalidate_cache();
471 log_cb(RETRO_LOG_ERROR, "plat_mem_set_exec called with no svcControlProcessMemory access\n");
476 ret = sceKernelOpenVMDomain();
478 ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
479 if (ret != 0 && log_cb)
480 log_cb(RETRO_LOG_ERROR, "mprotect(%p, %zd) failed: %d\n", ptr, size, errno);
485 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
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 struct retro_system_av_info av_info;
498 retro_get_system_av_info(&av_info);
499 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
502 void emu_32x_startup(void)
506 void lprintf(const char *fmt, ...)
511 vsprintf(buffer, fmt, ap);
512 /* TODO - add 'level' param for warning/error messages? */
514 log_cb(RETRO_LOG_INFO, "%s", buffer);
519 void retro_set_environment(retro_environment_t cb)
521 static const struct retro_variable vars[] = {
522 { "picodrive_input1", "Input device 1; 3 button pad|6 button pad|None" },
523 { "picodrive_input2", "Input device 2; 3 button pad|6 button pad|None" },
524 { "picodrive_sprlim", "No sprite limit; disabled|enabled" },
525 { "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
526 { "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
527 { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
528 { "picodrive_overscan", "Show Overscan; disabled|enabled" },
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)
569 memset(info, 0, sizeof(*info));
570 info->timing.fps = Pico.m.pal ? 50 : 60;
571 info->timing.sample_rate = 44100;
572 info->geometry.base_width = vout_width;
573 info->geometry.base_height = vout_height;
574 info->geometry.max_width = vout_width;
575 info->geometry.max_height = vout_height;
577 float common_width = vout_width;
578 if (user_vout_width != 0)
579 common_width = user_vout_width;
581 info->geometry.aspect_ratio = common_width / vout_height;
585 struct savestate_state {
586 const char *load_buf;
592 size_t state_read(void *p, size_t size, size_t nmemb, void *file)
594 struct savestate_state *state = file;
595 size_t bsize = size * nmemb;
597 if (state->pos + bsize > state->size) {
599 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
600 state->pos + bsize, state->size);
601 bsize = state->size - state->pos;
606 memcpy(p, state->load_buf + state->pos, bsize);
611 size_t state_write(void *p, size_t size, size_t nmemb, void *file)
613 struct savestate_state *state = file;
614 size_t bsize = size * nmemb;
616 if (state->pos + bsize > state->size) {
618 log_cb(RETRO_LOG_ERROR, "savestate error: %u/%u\n",
619 state->pos + bsize, state->size);
620 bsize = state->size - state->pos;
625 memcpy(state->save_buf + state->pos, p, bsize);
630 size_t state_skip(void *p, size_t size, size_t nmemb, void *file)
632 struct savestate_state *state = file;
633 size_t bsize = size * nmemb;
639 size_t state_eof(void *file)
641 struct savestate_state *state = file;
643 return state->pos >= state->size;
646 int state_fseek(void *file, long offset, int whence)
648 struct savestate_state *state = file;
655 state->pos += offset;
658 state->pos = state->size + offset;
661 return (int)state->pos;
664 /* savestate sizes vary wildly depending if cd/32x or
665 * carthw is active, so run the whole thing to get size */
666 size_t retro_serialize_size(void)
668 struct savestate_state state = { 0, };
671 ret = PicoStateFP(&state, 1, NULL, state_skip, NULL, state_fseek);
678 bool retro_serialize(void *data, size_t size)
680 struct savestate_state state = { 0, };
683 state.save_buf = data;
687 ret = PicoStateFP(&state, 1, NULL, state_write,
692 bool retro_unserialize(const void *data, size_t size)
694 struct savestate_state state = { 0, };
697 state.load_buf = data;
701 ret = PicoStateFP(&state, 0, state_read, NULL,
702 state_eof, state_fseek);
713 extern void decode(char *buff, patch *dest);
714 extern uint16_t m68k_read16(uint32_t a);
715 extern void m68k_write16(uint32_t a, uint16_t d);
717 void retro_cheat_reset(void)
722 for (i = 0; i < PicoPatchCount; i++)
724 addr = PicoPatches[i].addr;
725 if (addr < Pico.romsize) {
726 if (PicoPatches[i].active)
727 *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
729 if (PicoPatches[i].active)
730 m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
737 void retro_cheat_set(unsigned index, bool enabled, const char *code)
740 int array_len = PicoPatchCount;
744 if (code=='\0') return;
745 strcpy(codeCopy,code);
746 buff = strtok(codeCopy,"+");
751 if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
753 log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
757 /* code was good, add it */
758 if (array_len < PicoPatchCount + 1)
763 ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
765 log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
770 strcpy(PicoPatches[PicoPatchCount].code, buff);
772 PicoPatches[PicoPatchCount].active = enabled;
773 PicoPatches[PicoPatchCount].addr = pt.addr;
774 PicoPatches[PicoPatchCount].data = pt.data;
775 PicoPatches[PicoPatchCount].comp = pt.comp;
776 if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
777 PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
779 PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
782 buff = strtok(NULL,"+");
786 /* multidisk support */
787 static bool disk_ejected;
788 static unsigned int disk_current_index;
789 static unsigned int disk_count;
790 static struct disks_state {
794 static bool disk_set_eject_state(bool ejected)
797 disk_ejected = ejected;
801 static bool disk_get_eject_state(void)
806 static unsigned int disk_get_image_index(void)
808 return disk_current_index;
811 static bool disk_set_image_index(unsigned int index)
813 enum cd_img_type cd_type;
816 if (index >= sizeof(disks) / sizeof(disks[0]))
819 if (disks[index].fname == NULL) {
821 log_cb(RETRO_LOG_ERROR, "missing disk #%u\n", index);
823 // RetroArch specifies "no disk" with index == count,
824 // so don't fail here..
825 disk_current_index = index;
830 log_cb(RETRO_LOG_INFO, "switching to disk %u: \"%s\"\n", index,
834 cd_type = PicoCdCheck(disks[index].fname, NULL);
835 if (cd_type != CIT_NOT_CD)
836 ret = cdd_load(disks[index].fname, cd_type);
839 log_cb(RETRO_LOG_ERROR, "Load failed, invalid CD image?\n");
843 disk_current_index = index;
847 static unsigned int disk_get_num_images(void)
852 static bool disk_replace_image_index(unsigned index,
853 const struct retro_game_info *info)
857 if (index >= sizeof(disks) / sizeof(disks[0]))
860 if (disks[index].fname != NULL)
861 free(disks[index].fname);
862 disks[index].fname = NULL;
865 disks[index].fname = strdup(info->path);
866 if (index == disk_current_index)
867 ret = disk_set_image_index(index);
873 static bool disk_add_image_index(void)
875 if (disk_count >= sizeof(disks) / sizeof(disks[0]))
882 static struct retro_disk_control_callback disk_control = {
883 disk_set_eject_state,
884 disk_get_eject_state,
885 disk_get_image_index,
886 disk_set_image_index,
888 disk_replace_image_index,
889 disk_add_image_index,
892 static void disk_tray_open(void)
895 log_cb(RETRO_LOG_INFO, "cd tray open\n");
899 static void disk_tray_close(void)
902 log_cb(RETRO_LOG_INFO, "cd tray close\n");
907 static const char * const biosfiles_us[] = {
908 "us_scd2_9306", "SegaCDBIOS9303", "us_scd1_9210", "bios_CD_U"
910 static const char * const biosfiles_eu[] = {
911 "eu_mcd2_9306", "eu_mcd2_9303", "eu_mcd1_9210", "bios_CD_E"
913 static const char * const biosfiles_jp[] = {
914 "jp_mcd2_921222", "jp_mcd1_9112", "jp_mcd1_9111", "bios_CD_J"
917 static void make_system_path(char *buf, size_t buf_size,
918 const char *name, const char *ext)
920 const char *dir = NULL;
922 if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) {
923 snprintf(buf, buf_size, "%s%c%s%s", dir, SLASH, name, ext);
926 snprintf(buf, buf_size, "%s%s", name, ext);
930 static const char *find_bios(int *region, const char *cd_fname)
932 const char * const *files;
933 static char path[256];
937 if (*region == 4) { // US
938 files = biosfiles_us;
939 count = sizeof(biosfiles_us) / sizeof(char *);
940 } else if (*region == 8) { // EU
941 files = biosfiles_eu;
942 count = sizeof(biosfiles_eu) / sizeof(char *);
943 } else if (*region == 1 || *region == 2) {
944 files = biosfiles_jp;
945 count = sizeof(biosfiles_jp) / sizeof(char *);
950 for (i = 0; i < count; i++)
952 make_system_path(path, sizeof(path), files[i], ".bin");
953 f = fopen(path, "rb");
957 make_system_path(path, sizeof(path), files[i], ".zip");
958 f = fopen(path, "rb");
965 log_cb(RETRO_LOG_INFO, "using bios: %s\n", path);
973 bool retro_load_game(const struct retro_game_info *info)
975 enum media_type_e media_type;
976 static char carthw_path[256];
979 struct retro_input_descriptor desc[] = {
980 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
981 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
982 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
983 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
984 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
985 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
986 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
987 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
988 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
989 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
990 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
991 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
993 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
994 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
995 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
996 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
997 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "B" },
998 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "C" },
999 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X, "Y" },
1000 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y, "A" },
1001 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L, "X" },
1002 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R, "Z" },
1003 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT,"Mode" },
1004 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Start" },
1009 struct retro_input_descriptor desc_sms[] = {
1010 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1011 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1012 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1013 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1014 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1015 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1016 { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1018 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
1019 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
1020 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
1021 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
1022 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
1023 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
1024 { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
1029 enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
1030 if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
1032 log_cb(RETRO_LOG_ERROR, "RGB565 support required, sorry\n");
1036 if (info == NULL || info->path == NULL) {
1038 log_cb(RETRO_LOG_ERROR, "info->path required\n");
1042 for (i = 0; i < sizeof(disks) / sizeof(disks[0]); i++) {
1043 if (disks[i].fname != NULL) {
1044 free(disks[i].fname);
1045 disks[i].fname = NULL;
1049 disk_current_index = 0;
1051 disks[0].fname = strdup(info->path);
1053 make_system_path(carthw_path, sizeof(carthw_path), "carthw", ".cfg");
1055 media_type = PicoLoadMedia(info->path, carthw_path,
1058 switch (media_type) {
1061 log_cb(RETRO_LOG_ERROR, "Failed to detect ROM/CD image type.\n");
1065 log_cb(RETRO_LOG_ERROR, "Invalid CD image\n");
1067 case PM_BAD_CD_NO_BIOS:
1069 log_cb(RETRO_LOG_ERROR, "Missing BIOS\n");
1073 log_cb(RETRO_LOG_ERROR, "Load error\n");
1079 if (media_type == PM_MARK3)
1080 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc_sms);
1082 environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
1086 PicoWriteSound = snd_write;
1087 memset(sndBuffer, 0, sizeof(sndBuffer));
1088 PsndOut = sndBuffer;
1094 bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
1099 void retro_unload_game(void)
1103 unsigned retro_get_region(void)
1105 return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
1108 void *retro_get_memory_data(unsigned type)
1114 case RETRO_MEMORY_SAVE_RAM:
1115 if (PicoAHW & PAHW_MCD)
1116 data = Pico_mcd->bram;
1118 data = Pico.sv.data;
1120 case RETRO_MEMORY_SYSTEM_RAM:
1121 if (PicoAHW & PAHW_SMS)
1122 data = PicoMem.zram;
1134 size_t retro_get_memory_size(unsigned type)
1141 case RETRO_MEMORY_SAVE_RAM:
1142 if (PicoAHW & PAHW_MCD)
1146 if (Pico.m.frame_count == 0)
1147 return Pico.sv.size;
1149 // if game doesn't write to sram, don't report it to
1150 // libretro so that RA doesn't write out zeroed .srm
1151 for (i = 0, sum = 0; i < Pico.sv.size; i++)
1152 sum |= Pico.sv.data[i];
1154 return (sum != 0) ? Pico.sv.size : 0;
1156 case RETRO_MEMORY_SYSTEM_RAM:
1157 if (PicoAHW & PAHW_SMS)
1160 return sizeof(PicoMem.ram);
1168 void retro_reset(void)
1173 static const unsigned short retro_pico_map[] = {
1187 #define RETRO_PICO_MAP_LEN (sizeof(retro_pico_map) / sizeof(retro_pico_map[0]))
1189 static void snd_write(int len)
1191 audio_batch_cb(PsndOut, len / 4);
1194 static enum input_device input_name_to_val(const char *name)
1196 if (strcmp(name, "3 button pad") == 0)
1197 return PICO_INPUT_PAD_3BTN;
1198 if (strcmp(name, "6 button pad") == 0)
1199 return PICO_INPUT_PAD_6BTN;
1200 if (strcmp(name, "None") == 0)
1201 return PICO_INPUT_NOTHING;
1204 log_cb(RETRO_LOG_WARN, "invalid picodrive_input: '%s'\n", name);
1205 return PICO_INPUT_PAD_3BTN;
1208 static void update_variables(void)
1210 struct retro_variable var;
1213 var.key = "picodrive_input1";
1214 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1215 PicoSetInputDevice(0, input_name_to_val(var.value));
1218 var.key = "picodrive_input2";
1219 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
1220 PicoSetInputDevice(1, input_name_to_val(var.value));
1223 var.key = "picodrive_sprlim";
1224 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1225 if (strcmp(var.value, "enabled") == 0)
1226 PicoOpt |= POPT_DIS_SPRITE_LIM;
1228 PicoOpt &= ~POPT_DIS_SPRITE_LIM;
1232 var.key = "picodrive_ramcart";
1233 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1234 if (strcmp(var.value, "enabled") == 0)
1235 PicoOpt |= POPT_EN_MCD_RAMCART;
1237 PicoOpt &= ~POPT_EN_MCD_RAMCART;
1240 int OldPicoRegionOverride = PicoRegionOverride;
1242 var.key = "picodrive_region";
1243 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1244 if (strcmp(var.value, "Auto") == 0)
1245 PicoRegionOverride = 0;
1246 else if (strcmp(var.value, "Japan NTSC") == 0)
1247 PicoRegionOverride = 1;
1248 else if (strcmp(var.value, "Japan PAL") == 0)
1249 PicoRegionOverride = 2;
1250 else if (strcmp(var.value, "US") == 0)
1251 PicoRegionOverride = 4;
1252 else if (strcmp(var.value, "Europe") == 0)
1253 PicoRegionOverride = 8;
1256 // Update region, fps and sound flags if needed
1257 if (Pico.rom && PicoRegionOverride != OldPicoRegionOverride)
1264 float old_user_vout_width = user_vout_width;
1266 var.key = "picodrive_aspect";
1267 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1268 if (strcmp(var.value, "4/3") == 0)
1269 user_vout_width = VOUT_4_3;
1270 else if (strcmp(var.value, "CRT") == 0)
1271 user_vout_width = VOUT_CRT;
1273 user_vout_width = VOUT_PAR;
1277 var.key = "picodrive_overscan";
1278 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1279 if (strcmp(var.value, "enabled") == 0)
1280 show_overscan = true;
1282 show_overscan = false;
1285 if (user_vout_width != old_user_vout_width)
1287 // Update the geometry
1288 struct retro_system_av_info av_info;
1289 retro_get_system_av_info(&av_info);
1290 environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
1295 var.key = "picodrive_drc";
1296 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
1297 if (strcmp(var.value, "enabled") == 0)
1298 PicoOpt |= POPT_EN_DRC;
1300 PicoOpt &= ~POPT_EN_DRC;
1304 if(!ctr_svchack_successful)
1305 PicoOpt &= ~POPT_EN_DRC;
1309 void retro_run(void)
1311 bool updated = false;
1314 if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
1319 PicoPad[0] = PicoPad[1] = 0;
1320 for (pad = 0; pad < 2; pad++)
1321 for (i = 0; i < RETRO_PICO_MAP_LEN; i++)
1322 if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
1323 PicoPad[pad] |= retro_pico_map[i];
1328 video_cb((short *)vout_buf + vout_offset,
1329 vout_width, vout_height, vout_width * 2);
1332 void retro_init(void)
1334 struct retro_log_callback log;
1338 environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level);
1340 if (environ_cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &log))
1345 environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_control);
1348 ctr_svchack_successful = ctr_svchack_init();
1350 sceBlock = getVMBlock();
1353 PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
1354 | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX
1355 | POPT_EN_32X|POPT_EN_PWM
1356 | POPT_ACC_SPRITES|POPT_DIS_32C_BORDER;
1359 if (ctr_svchack_successful)
1361 PicoOpt |= POPT_EN_DRC;
1364 PicoAutoRgnOrder = 0x184; // US, EU, JP
1369 vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
1371 vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
1375 PicoDrawSetOutFormat(PDF_RGB555, 0);
1376 PicoDrawSetOutBuf(vout_buf, vout_width * 2);
1378 //PicoMessage = plat_status_msg_busy_next;
1379 PicoMCDopenTray = disk_tray_open;
1380 PicoMCDcloseTray = disk_tray_close;
1385 void retro_deinit(void)
1388 linearFree(vout_buf);
1396 // vim:shiftwidth=3:ts=3:expandtab