dynamic recompiler now works when the core is compiled as a shared

library.

Makefile

@@ -42,7 +42,7 @@ endif
 
 ASFLAGS = $(CFLAGS)
 INCDIRS := -I.
-LDFLAGS += -shared -m32 -Wl,--no-undefined -Wl,--version-script=link.T
+LDFLAGS += -shared -m32 -Wl,--no-undefined -Wl,--version-script=link.T -fPIC
 LDLIBS  += -lz
 
 all: $(TARGET)

cpu.h

@@ -152,9 +152,15 @@ s32 translate_block_thumb(u32 pc, translation_region_type translation_region,
 
 #endif
 
+#ifdef __LIBRETRO__
+extern u8* rom_translation_cache;
+extern u8* ram_translation_cache;
+extern u8* bios_translation_cache;
+#else
 extern u8 rom_translation_cache[ROM_TRANSLATION_CACHE_SIZE];
 extern u8 ram_translation_cache[RAM_TRANSLATION_CACHE_SIZE];
 extern u8 bios_translation_cache[BIOS_TRANSLATION_CACHE_SIZE];
+#endif
 extern u8 *rom_translation_ptr;
 extern u8 *ram_translation_ptr;
 extern u8 *bios_translation_ptr;

cpu_threaded.c

@@ -23,18 +23,27 @@
 
 #include "common.h"
 
+#ifdef __LIBRETRO__
+u8* rom_translation_cache;
+u8* ram_translation_cache;
+u8* bios_translation_cache;
+u8 *rom_translation_ptr;
+u8 *ram_translation_ptr;
+u8 *bios_translation_ptr;
+#else
 u8 rom_translation_cache[ROM_TRANSLATION_CACHE_SIZE];
-u8 *rom_translation_ptr = rom_translation_cache;
-
 u8 ram_translation_cache[RAM_TRANSLATION_CACHE_SIZE];
+u8 bios_translation_cache[BIOS_TRANSLATION_CACHE_SIZE];
+u8 *rom_translation_ptr = rom_translation_cache;
 u8 *ram_translation_ptr = ram_translation_cache;
+u8 *bios_translation_ptr = bios_translation_cache;
+#endif
+
 u32 iwram_code_min = 0xFFFFFFFF;
 u32 iwram_code_max = 0xFFFFFFFF;
 u32 ewram_code_min = 0xFFFFFFFF;
 u32 ewram_code_max = 0xFFFFFFFF;
 
-u8 bios_translation_cache[BIOS_TRANSLATION_CACHE_SIZE];
-u8 *bios_translation_ptr = bios_translation_cache;
 
 u32 *rom_branch_hash[ROM_BRANCH_HASH_SIZE];
 

libretro.c

@@ -94,21 +94,38 @@ void retro_get_system_av_info(struct retro_system_av_info *info)
    info->geometry.max_width = GBA_SCREEN_WIDTH;
    info->geometry.max_height = GBA_SCREEN_HEIGHT;
    info->geometry.aspect_ratio = 0;
-   info->timing.fps = ((float) (16* 1024 * 1024)) / (308 * 228 * 4); // 59.72750057 hz
+   // 59.72750057 hz
+   info->timing.fps = ((float)(16 * 1024 * 1024)) / (308 * 228 * 4);
    info->timing.sample_rate = GBA_SOUND_FREQUENCY;
 }
 
+#include <sys/mman.h>
 
 void retro_init()
 {
    init_gamepak_buffer();
    init_sound(1);
+
+   rom_translation_cache = mmap(NULL, ROM_TRANSLATION_CACHE_SIZE,
+                                PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0);
+   ram_translation_cache = mmap(NULL, RAM_TRANSLATION_CACHE_SIZE,
+                                PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0);
+   bios_translation_cache = mmap(NULL, BIOS_TRANSLATION_CACHE_SIZE,
+                                 PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_PRIVATE, -1, 0);
+
+   rom_translation_ptr = rom_translation_cache;
+   ram_translation_ptr = ram_translation_cache;
+   bios_translation_ptr = bios_translation_cache;
 }
 
 void retro_deinit()
 {
    perf_cb.perf_log();
    memory_term();
+
+   munmap(rom_translation_cache, ROM_TRANSLATION_CACHE_SIZE);
+   munmap(ram_translation_cache, RAM_TRANSLATION_CACHE_SIZE);
+   munmap(bios_translation_cache, BIOS_TRANSLATION_CACHE_SIZE);
 }
 
 void retro_set_environment(retro_environment_t cb)
@@ -126,8 +143,14 @@ void retro_set_environment(retro_environment_t cb)
 
 }
 
-void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
+void retro_set_video_refresh(retro_video_refresh_t cb)
-void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; }
+{
+   video_cb = cb;
+}
+void retro_set_input_poll(retro_input_poll_t cb)
+{
+   input_poll_cb = cb;
+}
 
 void retro_set_controller_port_device(unsigned port, unsigned device) {}
 
@@ -258,8 +281,11 @@ bool retro_load_game(const struct retro_game_info *info)
 }
 
 
-bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info)
+bool retro_load_game_special(unsigned game_type,
-{ return false; }
+                             const struct retro_game_info* info, size_t num_info)
+{
+   return false;
+}
 
 void retro_unload_game()
 {
@@ -267,7 +293,10 @@ void retro_unload_game()
    update_backup();
 }
 
-unsigned retro_get_region() { return RETRO_REGION_NTSC; }
+unsigned retro_get_region()
+{
+   return RETRO_REGION_NTSC;
+}
 
 void* retro_get_memory_data(unsigned id)
 {
@@ -324,11 +353,15 @@ void retro_run()
 
    render_audio();
 
-   video_cb(gba_screen_pixels, GBA_SCREEN_WIDTH, GBA_SCREEN_HEIGHT, GBA_SCREEN_PITCH * 2);
+   video_cb(gba_screen_pixels, GBA_SCREEN_WIDTH, GBA_SCREEN_HEIGHT,
+            GBA_SCREEN_PITCH * 2);
 
    if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
       check_variables();
 
 }
 
-unsigned retro_api_version() { return RETRO_API_VERSION; }
+unsigned retro_api_version()
+{
+   return RETRO_API_VERSION;
+}