Mercurial > sdl-ios-xcode

annotate include/SDL_endian.h @ 1371:e2641c13bf33

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added a reminder on where to put libSDL.so
author Sam Lantinga <slouken@libsdl.org>
date Sat, 18 Feb 2006 07:21:42 +0000
parents 42eeb14770e3
children 3e171fa5f4df
rev   line source
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
1 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
2 SDL - Simple DirectMedia Layer
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1044
diff changeset
3 Copyright (C) 1997-2006 Sam Lantinga
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
4
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
5 This library is free software; you can redistribute it and/or
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1044
diff changeset
6 modify it under the terms of the GNU Lesser General Public
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
7 License as published by the Free Software Foundation; either
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1044
diff changeset
8 version 2.1 of the License, or (at your option) any later version.
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
9
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
10 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1044
diff changeset
13 Lesser General Public License for more details.
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
14
1312
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1044
diff changeset
15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1044
diff changeset
16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents: 1044
diff changeset
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
18
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
19 Sam Lantinga
251
b8688cfdc232 Updated the headers with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents: 0
diff changeset
20 slouken@libsdl.org
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
21 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
22
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
23 /* Functions for reading and writing endian-specific values */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
24
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
25 #ifndef _SDL_endian_h
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
26 #define _SDL_endian_h
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
27
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
28 #include "SDL_stdinc.h"
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
29
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
30 /* The two types of endianness */
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
31 #define SDL_LIL_ENDIAN 1234
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
32 #define SDL_BIG_ENDIAN 4321
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
33
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
34 #ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
35 #if (defined(__i386__) || defined(__i386)) || \
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
36 defined(__ia64__) || defined(__x86_64__) || \
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
37 (defined(__alpha__) || defined(__alpha)) || \
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
38 (defined(__arm__) || defined(__thumb__)) || \
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
39 (defined(__sh__) || defined(__sh64__)) || \
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
40 (defined(__mips__) && defined(__MIPSEL__)) || \
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
41 defined(__SYMBIAN32__) || defined(__OS2__)
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
42 #define SDL_BYTEORDER SDL_LIL_ENDIAN
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
43 #else
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
44 #define SDL_BYTEORDER SDL_BIG_ENDIAN
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
45 #endif
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
46 #endif /* !SDL_BYTEORDER */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
47
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
48
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
49 #include "begin_code.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
50 /* Set up for C function definitions, even when using C++ */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
51 #ifdef __cplusplus
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
52 extern "C" {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
53 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
54
1369
42eeb14770e3 Doh! Bitten by search and replace. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1368
diff changeset
55 /* Use inline functions for compilers that support them, and static
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
56 functions for those that do not. Because these functions become
1369
42eeb14770e3 Doh! Bitten by search and replace. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1368
diff changeset
57 static for compilers that do not support inline functions, this
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
58 header should only be included in files that actually use them.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
59 */
1368
533567cbb576 More fixes for building on BeOS
Sam Lantinga <slouken@libsdl.org>
parents: 1354
diff changeset
60 #if defined(__GNUC__) && defined(__i386__) &&
533567cbb576 More fixes for building on BeOS
Sam Lantinga <slouken@libsdl.org>
parents: 1354
diff changeset
61 !(__GNUC__ == 2 && __GNUC_MINOR__ == 95 /* broken gcc version */)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
62 static __inline__ Uint16 SDL_Swap16(Uint16 x)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
63 {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
64 __asm__("xchgb %b0,%h0" : "=q" (x) : "0" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
65 return x;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
66 }
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
67 #elif defined(__GNUC__) && defined(__x86_64__)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
68 static __inline__ Uint16 SDL_Swap16(Uint16 x)
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
69 {
1033
aebfa3ce2a53 The fix is going back in. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1031
diff changeset
70 __asm__("xchgb %b0,%h0" : "=Q" (x) : "0" (x));
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
71 return x;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
72 }
859
6b28c91bf3d2 This works on MacOS X too. :)
Sam Lantinga <slouken@libsdl.org>
parents: 849
diff changeset
73 #elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
74 static __inline__ Uint16 SDL_Swap16(Uint16 x)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
75 {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
76 Uint16 result;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
77
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
78 __asm__("rlwimi %0,%2,8,16,23" : "=&r" (result) : "0" (x >> 8), "r" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
79 return result;
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
80 }
1044
d36ea7925763 Optimize also for 68020 and higher CPUs
Patrice Mandin <patmandin@gmail.com>
parents: 1033
diff changeset
81 #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
985
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
82 static __inline__ Uint16 SDL_Swap16(Uint16 x)
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
83 {
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
84 __asm__("rorw #8,%0" : "=d" (x) : "0" (x) : "cc");
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
85 return x;
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
86 }
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
87 #else
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
88 static __inline__ Uint16 SDL_Swap16(Uint16 x) {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
89 return((x<<8)|(x>>8));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
90 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
91 #endif
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
92
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
93 #if defined(__GNUC__) && defined(__i386__)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
94 static __inline__ Uint32 SDL_Swap32(Uint32 x)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
95 {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
96 __asm__("bswap %0" : "=r" (x) : "0" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
97 return x;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
98 }
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
99 #elif defined(__GNUC__) && defined(__x86_64__)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
100 static __inline__ Uint32 SDL_Swap32(Uint32 x)
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
101 {
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
102 __asm__("bswapl %0" : "=r" (x) : "0" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
103 return x;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
104 }
859
6b28c91bf3d2 This works on MacOS X too. :)
Sam Lantinga <slouken@libsdl.org>
parents: 849
diff changeset
105 #elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
106 static __inline__ Uint32 SDL_Swap32(Uint32 x)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
107 {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
108 Uint32 result;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
109
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
110 __asm__("rlwimi %0,%2,24,16,23" : "=&r" (result) : "0" (x>>24), "r" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
111 __asm__("rlwimi %0,%2,8,8,15" : "=&r" (result) : "0" (result), "r" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
112 __asm__("rlwimi %0,%2,24,0,7" : "=&r" (result) : "0" (result), "r" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
113 return result;
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
114 }
1044
d36ea7925763 Optimize also for 68020 and higher CPUs
Patrice Mandin <patmandin@gmail.com>
parents: 1033
diff changeset
115 #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
994
c4e5473672b6 Wrong size of parameters for SDL_Swap32 m68k assembly routine
Patrice Mandin <patmandin@gmail.com>
parents: 985
diff changeset
116 static __inline__ Uint32 SDL_Swap32(Uint32 x)
985
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
117 {
1044
d36ea7925763 Optimize also for 68020 and higher CPUs
Patrice Mandin <patmandin@gmail.com>
parents: 1033
diff changeset
118 __asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0" : "=d" (x) : "0" (x) : "cc");
985
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
119 return x;
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
120 }
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
121 #else
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
122 static __inline__ Uint32 SDL_Swap32(Uint32 x) {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
123 return((x<<24)|((x<<8)&0x00FF0000)|((x>>8)&0x0000FF00)|(x>>24));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
124 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
125 #endif
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
126
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
127 #ifdef SDL_HAS_64BIT_TYPE
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
128 #if defined(__GNUC__) && defined(__i386__)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
129 static __inline__ Uint64 SDL_Swap64(Uint64 x)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
130 {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
131 union {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
132 struct { Uint32 a,b; } s;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
133 Uint64 u;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
134 } v;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
135 v.u = x;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
136 __asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
137 : "=r" (v.s.a), "=r" (v.s.b)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
138 : "0" (v.s.a), "1" (v.s.b));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
139 return v.u;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
140 }
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
141 #elif defined(__GNUC__) && defined(__x86_64__)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
142 static __inline__ Uint64 SDL_Swap64(Uint64 x)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
143 {
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
144 __asm__("bswapq %0" : "=r" (x) : "0" (x));
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
145 return x;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
146 }
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
147 #else
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
148 static __inline__ Uint64 SDL_Swap64(Uint64 x)
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
149 {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
150 Uint32 hi, lo;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
151
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
152 /* Separate into high and low 32-bit values and swap them */
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
153 lo = (Uint32)(x&0xFFFFFFFF);
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
154 x >>= 32;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
155 hi = (Uint32)(x&0xFFFFFFFF);
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
156 x = SDL_Swap32(lo);
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
157 x <<= 32;
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
158 x |= SDL_Swap32(hi);
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
159 return(x);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
160 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
161 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
162 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
163 /* This is mainly to keep compilers from complaining in SDL code.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
164 If there is no real 64-bit datatype, then compilers will complain about
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
165 the fake 64-bit datatype that SDL provides when it compiles user code.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
166 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
167 #define SDL_Swap64(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
168 #endif /* SDL_HAS_64BIT_TYPE */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
169
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
170
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
171 /* Byteswap item from the specified endianness to the native endianness */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
172 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
173 #define SDL_SwapLE16(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
174 #define SDL_SwapLE32(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
175 #define SDL_SwapLE64(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
176 #define SDL_SwapBE16(X) SDL_Swap16(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
177 #define SDL_SwapBE32(X) SDL_Swap32(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
178 #define SDL_SwapBE64(X) SDL_Swap64(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
179 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
180 #define SDL_SwapLE16(X) SDL_Swap16(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
181 #define SDL_SwapLE32(X) SDL_Swap32(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
182 #define SDL_SwapLE64(X) SDL_Swap64(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
183 #define SDL_SwapBE16(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
184 #define SDL_SwapBE32(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
185 #define SDL_SwapBE64(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
186 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
187
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188 /* Ends C function definitions when using C++ */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 #ifdef __cplusplus
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
190 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
191 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
192 #include "close_code.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
193
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
194 #endif /* _SDL_endian_h */