video output now works in statically linked builds.

core can't be used as a shared library yet due to the dynarec not
working when compiled with -fPIC

Makefile

@@ -1,10 +1,10 @@
-TARGET      := gpsp_libretro.so
+TARGET   := gpsp_libretro
 
 CC  = gcc
 AR  = psp-ar
 STATIC_LINKING = 0
 
-CFLAGS   += -fPIC -Werror-implicit-function-declaration
+CFLAGS   += -Werror-implicit-function-declaration
 CFLAGS   += -DPC_BUILD -Wall -m32
 CFLAGS   += -D__LIBRETRO__
 
@@ -33,14 +33,18 @@ OBJS += zip.o
 OBJS += libretro.o
 OBJS += libco/libco.o
 
-
+ifeq ($(STATIC_LINKING), 1)
+TARGET := $(TARGET).a
+else
+TARGET := $(TARGET).so
+CFLAGS += -fPIC
+endif
 
 ASFLAGS = $(CFLAGS)
 INCDIRS := -I.
 LDFLAGS += -shared -m32 -Wl,--no-undefined -Wl,--version-script=link.T
 LDLIBS  += -lz
 
-
 all: $(TARGET)
 
 $(TARGET): $(OBJS)

cpu.c

@@ -4274,7 +4274,7 @@ void function_cc step_debug(u32 pc, u32 cycles)
         u16 *current_screen = copy_screen();
         get_savestate_filename_noshot(savestate_slot,
          current_savestate_filename);
-        save_state(current_savestate_filename, current_screen);
+        gba_save_state(current_savestate_filename, current_screen);
         free(current_screen);
         break;
       }

gui.c

@@ -1150,7 +1150,7 @@ u32 menu(u16 *original_screen)
     {
       get_savestate_filename_noshot(savestate_slot,
        current_savestate_filename);
-      save_state(current_savestate_filename, original_screen);
+      gba_save_state(current_savestate_filename, original_screen);
     }
     menu_change_state();
   }
@@ -1159,7 +1159,7 @@ u32 menu(u16 *original_screen)
   {
     if(!first_load)
     {
-      load_state(current_savestate_filename);
+      gba_load_state(current_savestate_filename);
       return_value = 1;
       repeat = 0;
     }
@@ -1171,7 +1171,7 @@ u32 menu(u16 *original_screen)
     char load_filename[512];
     if(load_file(file_ext, load_filename) != -1)
     {
-      load_state(load_filename);
+      gba_load_state(load_filename);
       return_value = 1;
       repeat = 0;
     }

libretro.c

@@ -227,17 +227,25 @@ bool retro_load_game(const struct retro_game_info *info)
 
 //   strncat(dir_save, "/",sizeof(dir_save));
 
-   strncat(main_path, "/",sizeof(main_path));
+//   strncat(main_path, "/",sizeof(main_path));
 
-   if (load_bios(filename_bios) < 0)
+   if (load_bios(filename_bios) != 0)
    {
      error_msg("Could not load BIOS image file.\n");
      return false;
    }
 
+   if(bios_rom[0] != 0x18)
+   {
+     info_msg("You have an incorrect BIOS image.\n");
+     info_msg("While many games will work fine, some will not. It\n");
+     info_msg("is strongly recommended that you obtain the\n");
+     info_msg("correct BIOS file.\n");
+   }
+
    gamepak_filename[0] = 0;
 
-   if (load_gamepak(info->path) < 0)
+   if (load_gamepak(info->path) != 0)
    {
      error_msg("Could not load the game file.\n");
      return false;

main.c

@@ -439,7 +439,7 @@ void trigger_ext_event()
 
   get_savestate_filename_noshot(savestate_slot,
    current_savestate_filename);
-  load_state(current_savestate_filename);
+  gba_load_state(current_savestate_filename);
 
   switch(event_number)
   {

memory.c

@@ -3160,7 +3160,7 @@ void bios_region_read_protect()
   sound_##type##_savestate(savestate_file);                                   \
   video_##type##_savestate(savestate_file)                                    \
 
-void load_state(char *savestate_filename)
+void gba_load_state(char *savestate_filename)
 {
   file_open(savestate_file, savestate_filename, read);
   if(file_check_valid(savestate_file))
@@ -3196,7 +3196,7 @@ void load_state(char *savestate_filename)
         {
           reset_gba();
           // Okay, so this takes a while, but for now it works.
-          load_state(savestate_filename);
+          gba_load_state(savestate_filename);
         }
         else
         {
@@ -3229,7 +3229,7 @@ void load_state(char *savestate_filename)
 u8 savestate_write_buffer[506947];
 u8 *write_mem_ptr;
 
-void save_state(char *savestate_filename, u16 *screen_capture)
+void gba_save_state(char *savestate_filename, u16 *screen_capture)
 {
   write_mem_ptr = savestate_write_buffer;
   file_open(savestate_file, savestate_filename, write);

memory.h

@@ -188,8 +188,8 @@ void bios_region_read_protect();
 u8 *load_gamepak_page(u32 physical_index);
 void memory_write_mem_savestate(file_tag_type savestate_file);
 void memory_read_savestate(file_tag_type savestate_file);
-void load_state(char *savestate_filename);
-void save_state(char *savestate_filename, u16 *screen_capture);
+void gba_load_state(char *savestate_filename);
+void gba_save_state(char *savestate_filename, u16 *screen_capture);
 
 extern u8 *gamepak_rom;
 extern u32 gamepak_ram_buffer_size;

sound.c

@@ -852,6 +852,8 @@ void render_audio(void)
    u32 i;
    s32 current_sample;
 
+   return;
+
    while (((gbc_sound_buffer_index - sound_buffer_base) % BUFFER_SIZE) > 512)   {
       sound_copy(sound_buffer_base, 512, normal);
       audio_batch_cb(stream_base, 256);