SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
--HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401938
This commit is contained in:
Sam Lantinga
parent
91a32b77a2
commit
0f030a1802
686 changed files with 117556 additions and 98661 deletions
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@ -20,7 +20,11 @@
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slouken@libsdl.org
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*/
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/* Functions for reading and writing endian-specific values */
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/**
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* \file SDL_endian.h
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*
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* Functions for reading and writing endian-specific values
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*/
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#ifndef _SDL_endian_h
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#define _SDL_endian_h
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@ -31,7 +35,7 @@
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#define SDL_LIL_ENDIAN 1234
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#define SDL_BIG_ENDIAN 4321
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#ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */
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#ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */
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#if defined(__hppa__) || \
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defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
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(defined(__MIPS__) && defined(__MISPEB__)) || \
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@ -47,7 +51,9 @@
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#include "begin_code.h"
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/* Set up for C function definitions, even when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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extern "C" {
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/* *INDENT-ON* */
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#endif
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/* Use inline functions for compilers that support them, and static
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@ -57,104 +63,124 @@ extern "C" {
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*/
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#if defined(__GNUC__) && defined(__i386__) && \
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!(__GNUC__ == 2 && __GNUC_MINOR__ == 95 /* broken gcc version */)
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static __inline__ Uint16 SDL_Swap16(Uint16 x)
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static __inline__ Uint16
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SDL_Swap16(Uint16 x)
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{
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__asm__("xchgb %b0,%h0" : "=q" (x) : "0" (x));
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return x;
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__asm__("xchgb %b0,%h0": "=q"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && defined(__x86_64__)
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static __inline__ Uint16 SDL_Swap16(Uint16 x)
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static __inline__ Uint16
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SDL_Swap16(Uint16 x)
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{
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__asm__("xchgb %b0,%h0" : "=Q" (x) : "0" (x));
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return x;
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__asm__("xchgb %b0,%h0": "=Q"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
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static __inline__ Uint16 SDL_Swap16(Uint16 x)
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static __inline__ Uint16
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SDL_Swap16(Uint16 x)
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{
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Uint16 result;
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Uint16 result;
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__asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (x >> 8), "r" (x));
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return result;
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__asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x));
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return result;
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}
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#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
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static __inline__ Uint16 SDL_Swap16(Uint16 x)
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static __inline__ Uint16
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SDL_Swap16(Uint16 x)
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{
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__asm__("rorw #8,%0" : "=d" (x) : "0" (x) : "cc");
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return x;
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__asm__("rorw #8,%0": "=d"(x): "0"(x):"cc");
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return x;
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}
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#else
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static __inline__ Uint16 SDL_Swap16(Uint16 x) {
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return((x<<8)|(x>>8));
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static __inline__ Uint16
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SDL_Swap16(Uint16 x)
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{
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return ((x << 8) | (x >> 8));
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}
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#endif
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#if defined(__GNUC__) && defined(__i386__)
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static __inline__ Uint32 SDL_Swap32(Uint32 x)
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static __inline__ Uint32
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SDL_Swap32(Uint32 x)
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{
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__asm__("bswap %0" : "=r" (x) : "0" (x));
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return x;
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__asm__("bswap %0": "=r"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && defined(__x86_64__)
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static __inline__ Uint32 SDL_Swap32(Uint32 x)
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static __inline__ Uint32
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SDL_Swap32(Uint32 x)
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{
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__asm__("bswapl %0" : "=r" (x) : "0" (x));
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return x;
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__asm__("bswapl %0": "=r"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
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static __inline__ Uint32 SDL_Swap32(Uint32 x)
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static __inline__ Uint32
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SDL_Swap32(Uint32 x)
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{
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Uint32 result;
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Uint32 result;
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__asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (x>>24), "r" (x));
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__asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (x));
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__asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (x));
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return result;
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__asm__("rlwimi %0,%2,24,16,23": "=&r"(result):"0"(x >> 24), "r"(x));
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__asm__("rlwimi %0,%2,8,8,15": "=&r"(result):"0"(result), "r"(x));
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__asm__("rlwimi %0,%2,24,0,7": "=&r"(result):"0"(result), "r"(x));
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return result;
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}
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#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
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static __inline__ Uint32 SDL_Swap32(Uint32 x)
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static __inline__ Uint32
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SDL_Swap32(Uint32 x)
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{
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__asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0" : "=d" (x) : "0" (x) : "cc");
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return x;
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__asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0": "=d"(x): "0"(x):"cc");
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return x;
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}
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#else
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static __inline__ Uint32 SDL_Swap32(Uint32 x) {
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return((x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24));
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static __inline__ Uint32
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SDL_Swap32(Uint32 x)
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{
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return ((x << 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) |
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(x >> 24));
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}
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#endif
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#ifdef SDL_HAS_64BIT_TYPE
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#if defined(__GNUC__) && defined(__i386__)
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static __inline__ Uint64 SDL_Swap64(Uint64 x)
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static __inline__ Uint64
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SDL_Swap64(Uint64 x)
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{
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union {
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struct { Uint32 a,b; } s;
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Uint64 u;
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} v;
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v.u = x;
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__asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
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: "=r" (v.s.a), "=r" (v.s.b)
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: "0" (v.s.a), "1" (v.s.b));
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return v.u;
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union
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{
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struct
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{
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Uint32 a, b;
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} s;
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Uint64 u;
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} v;
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v.u = x;
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__asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1": "=r"(v.s.a), "=r"(v.s.b):"0"(v.s.a),
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"1"(v.s.
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b));
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return v.u;
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}
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#elif defined(__GNUC__) && defined(__x86_64__)
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static __inline__ Uint64 SDL_Swap64(Uint64 x)
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static __inline__ Uint64
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SDL_Swap64(Uint64 x)
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{
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__asm__("bswapq %0" : "=r" (x) : "0" (x));
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return x;
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__asm__("bswapq %0": "=r"(x):"0"(x));
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return x;
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}
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#else
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static __inline__ Uint64 SDL_Swap64(Uint64 x)
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static __inline__ Uint64
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SDL_Swap64(Uint64 x)
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{
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Uint32 hi, lo;
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Uint32 hi, lo;
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/* Separate into high and low 32-bit values and swap them */
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lo = (Uint32)(x&0xFFFFFFFF);
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x >>= 32;
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hi = (Uint32)(x&0xFFFFFFFF);
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x = SDL_Swap32(lo);
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x <<= 32;
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x |= SDL_Swap32(hi);
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return(x);
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/* Separate into high and low 32-bit values and swap them */
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lo = (Uint32) (x & 0xFFFFFFFF);
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x >>= 32;
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hi = (Uint32) (x & 0xFFFFFFFF);
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x = SDL_Swap32(lo);
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x <<= 32;
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x |= SDL_Swap32(hi);
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return (x);
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}
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#endif
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#else
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@ -185,8 +211,12 @@ static __inline__ Uint64 SDL_Swap64(Uint64 x)
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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/* *INDENT-OFF* */
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}
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/* *INDENT-ON* */
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#endif
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#include "close_code.h"
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#endif /* _SDL_endian_h */
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/* vi: set ts=4 sw=4 expandtab: */
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