GBA: Moved memory map to internal memory

Very modest performance improvement.

Author: ducalex

components/retro-go/rg_system.c

@@ -275,6 +275,7 @@ static void system_monitor_task(void *arg)
             (int)roundf((battery.volts * 1000) ?: battery.level));
 
         // Auto frameskip
+        // TODO: Use a rolling average of frameTimes instead of this mess
         if (statistics.ticks > app.tickRate * 2)
         {
             float speed = ((float)statistics.totalFPS / app.tickRate) * 100.f / app.speed;

gbsp/components/gbsp-libretro/cpu.cpp

@@ -1457,8 +1457,8 @@ u16 palette_ram_converted[512];
 u8 ewram[(1024 * 256) << SMC_DETECTION];
 u8 iwram[(1024 * 32) << SMC_DETECTION];
 u8 vram[1024 * 96];
-u8 *memory_map_read[8 * 1024];
 #endif
+u8 *memory_map_read[8 * 1024];
 u16 io_registers[512];
 #endif
 

gbsp/components/gbsp-libretro/gba_memory.h

@@ -345,7 +345,7 @@ typedef struct
   u8 vram[1024 * 96];
   u8 ewram[(1024 * 256) << SMC_DETECTION];
   u8 iwram[(1024 * 32) << SMC_DETECTION];
-  u8 *memory_map_read[8 * 1024];
+  // u8 *memory_map_read[8 * 1024];
   u8 gamepak_backup[1024 * 128];
   // There's also stuff from video.cpp to consider:
   // u8 obj_priority_list[5][160][128];
@@ -357,7 +357,7 @@ extern gbsp_memory_t *gbsp_memory;
 #define vram gbsp_memory->vram
 #define ewram gbsp_memory->ewram
 #define iwram gbsp_memory->iwram
-#define memory_map_read gbsp_memory->memory_map_read
+// #define memory_map_read gbsp_memory->memory_map_read
 #define gamepak_backup gbsp_memory->gamepak_backup
 #endif