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authorPaweł Redman <pawel.redman@gmail.com>2017-03-22 17:56:34 +0100
committerPaweł Redman <pawel.redman@gmail.com>2017-03-22 17:56:34 +0100
commit6a777afc079c2a8d3af3ecd2145fe8dd50567a39 (patch)
tree520f4489cebf8564ef6cb27064ceea45cbc005b3 /src/SDL12/include/SDL_endian.h
Funko sources as released by Rotacak.HEADmaster
Diffstat (limited to 'src/SDL12/include/SDL_endian.h')
-rw-r--r--src/SDL12/include/SDL_endian.h192
1 files changed, 192 insertions, 0 deletions
diff --git a/src/SDL12/include/SDL_endian.h b/src/SDL12/include/SDL_endian.h
new file mode 100644
index 0000000..6257a64
--- /dev/null
+++ b/src/SDL12/include/SDL_endian.h
@@ -0,0 +1,192 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2006 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+
+/* Functions for reading and writing endian-specific values */
+
+#ifndef _SDL_endian_h
+#define _SDL_endian_h
+
+#include "SDL_stdinc.h"
+
+/* The two types of endianness */
+#define SDL_LIL_ENDIAN 1234
+#define SDL_BIG_ENDIAN 4321
+
+#ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */
+#if defined(__hppa__) || \
+ defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
+ (defined(__MIPS__) && defined(__MISPEB__)) || \
+ defined(__ppc__) || defined(__POWERPC__) || defined(_M_PPC) || \
+ defined(__sparc__)
+#define SDL_BYTEORDER SDL_BIG_ENDIAN
+#else
+#define SDL_BYTEORDER SDL_LIL_ENDIAN
+#endif
+#endif /* !SDL_BYTEORDER */
+
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Use inline functions for compilers that support them, and static
+ functions for those that do not. Because these functions become
+ static for compilers that do not support inline functions, this
+ header should only be included in files that actually use them.
+*/
+#if defined(__GNUC__) && defined(__i386__) && \
+ !(__GNUC__ == 2 && __GNUC_MINOR__ == 95 /* broken gcc version */)
+static __inline__ Uint16 SDL_Swap16(Uint16 x)
+{
+ __asm__("xchgb %b0,%h0" : "=q" (x) : "0" (x));
+ return x;
+}
+#elif defined(__GNUC__) && defined(__x86_64__)
+static __inline__ Uint16 SDL_Swap16(Uint16 x)
+{
+ __asm__("xchgb %b0,%h0" : "=Q" (x) : "0" (x));
+ return x;
+}
+#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
+static __inline__ Uint16 SDL_Swap16(Uint16 x)
+{
+ Uint16 result;
+
+ __asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (x >> 8), "r" (x));
+ return result;
+}
+#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
+static __inline__ Uint16 SDL_Swap16(Uint16 x)
+{
+ __asm__("rorw #8,%0" : "=d" (x) : "0" (x) : "cc");
+ return x;
+}
+#else
+static __inline__ Uint16 SDL_Swap16(Uint16 x) {
+ return((x<<8)|(x>>8));
+}
+#endif
+
+#if defined(__GNUC__) && defined(__i386__)
+static __inline__ Uint32 SDL_Swap32(Uint32 x)
+{
+ __asm__("bswap %0" : "=r" (x) : "0" (x));
+ return x;
+}
+#elif defined(__GNUC__) && defined(__x86_64__)
+static __inline__ Uint32 SDL_Swap32(Uint32 x)
+{
+ __asm__("bswapl %0" : "=r" (x) : "0" (x));
+ return x;
+}
+#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
+static __inline__ Uint32 SDL_Swap32(Uint32 x)
+{
+ Uint32 result;
+
+ __asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (x>>24), "r" (x));
+ __asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (x));
+ __asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (x));
+ return result;
+}
+#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
+static __inline__ Uint32 SDL_Swap32(Uint32 x)
+{
+ __asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0" : "=d" (x) : "0" (x) : "cc");
+ return x;
+}
+#else
+static __inline__ Uint32 SDL_Swap32(Uint32 x) {
+ return((x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24));
+}
+#endif
+
+#ifdef SDL_HAS_64BIT_TYPE
+#if defined(__GNUC__) && defined(__i386__)
+static __inline__ Uint64 SDL_Swap64(Uint64 x)
+{
+ union {
+ struct { Uint32 a,b; } s;
+ Uint64 u;
+ } v;
+ v.u = x;
+ __asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
+ : "=r" (v.s.a), "=r" (v.s.b)
+ : "0" (v.s.a), "1" (v.s.b));
+ return v.u;
+}
+#elif defined(__GNUC__) && defined(__x86_64__)
+static __inline__ Uint64 SDL_Swap64(Uint64 x)
+{
+ __asm__("bswapq %0" : "=r" (x) : "0" (x));
+ return x;
+}
+#else
+static __inline__ Uint64 SDL_Swap64(Uint64 x)
+{
+ Uint32 hi, lo;
+
+ /* Separate into high and low 32-bit values and swap them */
+ lo = (Uint32)(x&0xFFFFFFFF);
+ x >>= 32;
+ hi = (Uint32)(x&0xFFFFFFFF);
+ x = SDL_Swap32(lo);
+ x <<= 32;
+ x |= SDL_Swap32(hi);
+ return(x);
+}
+#endif
+#else
+/* This is mainly to keep compilers from complaining in SDL code.
+ If there is no real 64-bit datatype, then compilers will complain about
+ the fake 64-bit datatype that SDL provides when it compiles user code.
+*/
+#define SDL_Swap64(X) (X)
+#endif /* SDL_HAS_64BIT_TYPE */
+
+
+/* Byteswap item from the specified endianness to the native endianness */
+#if SDL_BYTEORDER == SDL_LIL_ENDIAN
+#define SDL_SwapLE16(X) (X)
+#define SDL_SwapLE32(X) (X)
+#define SDL_SwapLE64(X) (X)
+#define SDL_SwapBE16(X) SDL_Swap16(X)
+#define SDL_SwapBE32(X) SDL_Swap32(X)
+#define SDL_SwapBE64(X) SDL_Swap64(X)
+#else
+#define SDL_SwapLE16(X) SDL_Swap16(X)
+#define SDL_SwapLE32(X) SDL_Swap32(X)
+#define SDL_SwapLE64(X) SDL_Swap64(X)
+#define SDL_SwapBE16(X) (X)
+#define SDL_SwapBE32(X) (X)
+#define SDL_SwapBE64(X) (X)
+#endif
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_endian_h */