platform ps2, handle audio similar to psp

[picodrive.git] / pico / pico_port.h

diff --git a/pico/pico_port.h b/pico/pico_port.h
index f1d95a5..41a4ce2 100644 (file)
--- a/pico/pico_port.h
+++ b/pico/pico_port.h
@@ -1,6 +1,17 @@
 #ifndef PICO_PORT_INCLUDED
 #define PICO_PORT_INCLUDED
 
+// provide size_t, uintptr_t
+#include <stdlib.h>
+#if !(defined(_MSC_VER) && _MSC_VER < 1800)
+#include <stdint.h>
+#endif
+#include "pico_types.h"
+
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 #if defined(__GNUC__) && defined(__i386__)
 #define REGPARM(x) __attribute__((regparm(x)))
 #else
@@ -10,9 +21,63 @@
 #ifdef __GNUC__
 #define NOINLINE    __attribute__((noinline))
 #define ALIGNED(n)  __attribute__((aligned(n)))
+#define unlikely(x) __builtin_expect((x), 0)
+#define likely(x)   __builtin_expect(!!(x), 1)
 #else
 #define NOINLINE
 #define ALIGNED(n)
+#define unlikely(x) (x)
+#define likely(x) (x)
+#endif
+
+#ifdef _MSC_VER
+#define snprintf _snprintf
+#define strcasecmp _stricmp
+#define strncasecmp _strnicmp
+#define strdup _strdup
+#endif
+
+
+// There's no standard way to determine endianess at compile time. Try using
+// some well known non-standard macros for detection.
+#if defined __BYTE_ORDER__
+#define        CPU_IS_LE       __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#elif defined __BYTE_ORDER
+#define        CPU_IS_LE       __BYTE_ORDER == __LITTLE_ENDIAN
+#elif defined __BIG_ENDIAN__ || defined _M_PPC // Windows on PPC was big endian
+#define        CPU_IS_LE       0
+#elif defined __LITTLE_ENDIAN__ || defined _WIN32 // all other Windows is LE
+#define        CPU_IS_LE       1
+#else
+#warning "can't detect byte order, assume little endian"
+#define        CPU_IS_LE       1
+#endif
+// NB mixed endian integer platforms are not supported.
+
+#if CPU_IS_LE
+// address/offset operations
+#define MEM_BE2(a)     ((a)^1)         // addr/offs of u8 in u16, or u16 in u32
+#define MEM_BE4(a)     ((a)^3)         // addr/offs of u8 in u32
+#define MEM_LE2(a)     (a)
+#define MEM_LE4(a)     (a)
+// swapping
+#define CPU_BE2(v)     ((u32)((u64)(v)<<16)|((u32)(v)>>16))
+#define CPU_BE4(v)     (((u32)(v)>>24)|(((v)>>8)&0x00ff00)| \
+                       (((v)<<8)&0xff0000)|(u32)((v)<<24))
+#define CPU_LE2(v)     (v)             // swap of 2*u16 in u32
+#define CPU_LE4(v)     (v)             // swap of 4*u8  in u32
+#else
+// address/offset operations
+#define MEM_BE2(a)     (a)
+#define MEM_BE4(a)     (a)
+#define MEM_LE2(a)     ((a)^1)
+#define MEM_LE4(a)     ((a)^3)
+// swapping
+#define CPU_BE2(v)     (v)
+#define CPU_BE4(v)     (v)
+#define CPU_LE2(v)     ((u32)((u64)(v)<<16)|((u32)(v)>>16))
+#define CPU_LE4(v)     (((u32)(v)>>24)|(((v)>>8)&0x00ff00)| \
+                       (((v)<<8)&0xff0000)|(u32)((v)<<24))
 #endif
 
 #endif // PICO_PORT_INCLUDED