libretro: add savestate support

[picodrive.git] / pico / state.c

diff --git a/pico/state.c b/pico/state.c
index 11eee6f..3969e18 100644 (file)
--- a/pico/state.c
+++ b/pico/state.c
@@ -11,15 +11,11 @@
 \r
 #include "../cpu/sh2/sh2.h"\r
 #include "sound/ym2612.h"\r
+#include "state.h"\r
 \r
 // sn76496\r
 extern int *sn76496_regs;\r
 \r
-typedef size_t (arearw)(void *p, size_t _size, size_t _n, void *file);\r
-typedef size_t (areaeof)(void *file);\r
-typedef int    (areaseek)(void *file, long offset, int whence);\r
-typedef int    (areaclose)(void *file);\r
-\r
 static arearw    *areaRead;\r
 static arearw    *areaWrite;\r
 static areaeof   *areaEof;\r
@@ -594,15 +590,10 @@ readend:
   return 0;\r
 }\r
 \r
-int PicoState(const char *fname, int is_save)\r
+static int pico_state_internal(void *afile, int is_save)\r
 {\r
-  void *afile = NULL;\r
   int ret;\r
 \r
-  afile = open_save_file(fname, is_save);\r
-  if (afile == NULL)\r
-    return -1;\r
-\r
   if (is_save)\r
     ret = state_save(afile);\r
   else {\r
@@ -617,10 +608,35 @@ int PicoState(const char *fname, int is_save)
     Pico.m.dirtyPal = 1;\r
   }\r
 \r
+  return ret;\r
+}\r
+\r
+int PicoState(const char *fname, int is_save)\r
+{\r
+  void *afile = NULL;\r
+  int ret;\r
+\r
+  afile = open_save_file(fname, is_save);\r
+  if (afile == NULL)\r
+    return -1;\r
+\r
+  ret = pico_state_internal(afile, is_save);\r
   areaClose(afile);\r
   return ret;\r
 }\r
 \r
+int PicoStateFP(void *afile, int is_save,\r
+  arearw *read, arearw *write, areaeof *eof, areaseek *seek)\r
+{\r
+  areaRead  = read;\r
+  areaWrite = write;\r
+  areaEof   = eof;\r
+  areaSeek  = seek;\r
+  areaClose = NULL;\r
+\r
+  return pico_state_internal(afile, is_save);\r
+}\r
+\r
 int PicoStateLoadGfx(const char *fname)\r
 {\r
   void *afile;\r