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added ROM memory region #317

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added ROM memory region #317

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16 changes: 16 additions & 0 deletions src/platform/libretro/libretro.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1812,6 +1812,7 @@ static void _setupMaps(struct mCore* core) {
descs[7].start = GBA_BASE_VRAM;
descs[7].len = GBA_SIZE_VRAM;
descs[7].select = 0xFF000000;
descs[7].flags = RETRO_MEMDESC_VIDEO_RAM;

/* Map palette RAM */
descs[8].ptr = gba->video.palette;
Expand Down Expand Up @@ -1867,6 +1868,7 @@ static void _setupMaps(struct mCore* core) {
descs[i].ptr = gb->video.vram;
descs[i].start = GB_BASE_VRAM;
descs[i].len = GB_SIZE_VRAM_BANK0;
descs[i].flags = RETRO_MEMDESC_VIDEO_RAM;
i++;

/* Map working RAM */
Expand Down Expand Up @@ -2322,6 +2324,20 @@ void* retro_get_memory_data(unsigned id) {
#ifdef M_CORE_GBA
case mPLATFORM_GBA:
return ((struct GBA*)core->board)->video.renderer->vram;
#endif
default:
break;
}
break;
case RETRO_MEMORY_ROM:
switch (core->platform(core)) {
#ifdef M_CORE_GB
case mPLATFORM_GB:
return ((struct GB*)core->board)->memory.rom;
#endif
#ifdef M_CORE_GBA
case mPLATFORM_GBA:
return ((struct GBA*)core->board)->memory.rom;
#endif
default:
break;
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3 changes: 3 additions & 0 deletions src/platform/libretro/libretro.h
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Expand Up @@ -519,6 +519,9 @@ enum retro_language
/* Video ram lets a frontend peek into a game systems video RAM (VRAM). */
#define RETRO_MEMORY_VIDEO_RAM 3

/* ROM lets a frontend peek into a game systems ROM. */
#define RETRO_MEMORY_ROM 4

/** @} */

/* Keysyms used for ID in input state callback when polling RETRO_KEYBOARD. */
Expand Down