initial libretro port

pico/32x/32x.c

@@ -69,6 +69,8 @@ void Pico32xStartup(void)
   PREG8(Pico32xMem->sh2_peri_regs[0], 4) =
   PREG8(Pico32xMem->sh2_peri_regs[1], 4) = 0x84; // SCI SSR
 
+  rendstatus_old = -1;
+
   emu_32x_startup();
 }
 

pico/pico.c

@@ -220,6 +220,9 @@ void PicoLoopPrepare(void)
   // FIXME: PAL has 313 scanlines..
   scanlines_total = Pico.m.pal ? 312 : 262;
 
+  Pico.m.dirtyPal = 1;
+  rendstatus_old = -1;
+
   if (PicoAHW & PAHW_32X)
     p32x_timers_recalc();
 }

pico/pico.h

@@ -19,6 +19,9 @@
 extern "C" {
 #endif
 
+// message log
+extern void lprintf(const char *fmt, ...);
+
 // external funcs for Sega/Mega CD
 extern int  mp3_get_bitrate(void *f, int size);
 extern void mp3_start_play(void *f, int pos);
@@ -27,7 +30,7 @@ extern void mp3_update(int *buffer, int length, int stereo);
 // this function should write-back d-cache and invalidate i-cache
 // on a mem region [start_addr, end_addr)
 // used by dynarecs
-extern void cache_flush_d_inval_i(const void *start_addr, const void *end_addr);
+extern void cache_flush_d_inval_i(void *start_addr, void *end_addr);
 
 // attempt to alloc mem at specified address.
 // alloc anywhere else if that fails (callers should handle that)

pico/pico_int.h

@@ -800,7 +800,6 @@ static __inline int isspace_(int c)
 #define EL_ANOMALY 0x80000000 /* some unexpected conditions (during emulation) */
 
 #if EL_LOGMASK
-extern void lprintf(const char *fmt, ...);
 #define elprintf(w,f,...) \
 { \
 	if ((w) & EL_LOGMASK) \