Mercurial > sdl-ios-xcode

annotate include/SDL_endian.h @ 2643:91fd5d3cb90e gsoc2008_force_feedback

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Made LINUXEV required for haptic.
author Edgar Simo <bobbens@gmail.com>
date Tue, 12 Aug 2008 20:46:39 +0000
parents 8055185ae4ed
children e1da92da346c 99210400e8b9
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
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
23 /**
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
24 * \file SDL_endian.h
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
25 *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
26 * Functions for reading and writing endian-specific values
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
27 */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
28
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
29 #ifndef _SDL_endian_h
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
30 #define _SDL_endian_h
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
31
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
32 #include "SDL_stdinc.h"
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
33
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
34 /* The two types of endianness */
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
35 #define SDL_LIL_ENDIAN 1234
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
36 #define SDL_BIG_ENDIAN 4321
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
37
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
38 #ifndef SDL_BYTEORDER /* Not defined in SDL_config.h? */
1474
351d757c7edd Maybe it's easier to collect the big-endian architectures. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1469
diff changeset
39 #if defined(__hppa__) || \
1475
d45aefcac017 Get Microsoft's preprocessor symbols in there
Sam Lantinga <slouken@libsdl.org>
parents: 1474
diff changeset
40 defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
1474
351d757c7edd Maybe it's easier to collect the big-endian architectures. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1469
diff changeset
41 (defined(__MIPS__) && defined(__MISPEB__)) || \
1475
d45aefcac017 Get Microsoft's preprocessor symbols in there
Sam Lantinga <slouken@libsdl.org>
parents: 1474
diff changeset
42 defined(__ppc__) || defined(__POWERPC__) || defined(_M_PPC) || \
1474
351d757c7edd Maybe it's easier to collect the big-endian architectures. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1469
diff changeset
43 defined(__sparc__)
351d757c7edd Maybe it's easier to collect the big-endian architectures. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1469
diff changeset
44 #define SDL_BYTEORDER SDL_BIG_ENDIAN
351d757c7edd Maybe it's easier to collect the big-endian architectures. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1469
diff changeset
45 #else
1354
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
46 #define SDL_BYTEORDER SDL_LIL_ENDIAN
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
47 #endif
22f39393668a Fixed build problem with SDL_string.c
Sam Lantinga <slouken@libsdl.org>
parents: 1353
diff changeset
48 #endif /* !SDL_BYTEORDER */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
49
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
50
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
51 #include "begin_code.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
52 /* Set up for C function definitions, even when using C++ */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
53 #ifdef __cplusplus
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
54 /* *INDENT-OFF* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
55 extern "C" {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
56 /* *INDENT-ON* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
57 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
58
1369
42eeb14770e3 Doh! Bitten by search and replace. :)
Sam Lantinga <slouken@libsdl.org>
parents: 1368
diff changeset
59 /* Use inline functions for compilers that support them, and static
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
60 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
61 static for compilers that do not support inline functions, this
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
62 header should only be included in files that actually use them.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
63 */
1372
Sam Lantinga <slouken@libsdl.org>
parents: 1369
diff changeset
64 #if defined(__GNUC__) && defined(__i386__) && \
1368
533567cbb576 More fixes for building on BeOS
Sam Lantinga <slouken@libsdl.org>
parents: 1354
diff changeset
65 !(__GNUC__ == 2 && __GNUC_MINOR__ == 95 /* broken gcc version */)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
66 static __inline__ Uint16
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
67 SDL_Swap16(Uint16 x)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
68 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
69 __asm__("xchgb %b0,%h0": "=q"(x):"0"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
70 return x;
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
71 }
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
72 #elif defined(__GNUC__) && defined(__x86_64__)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
73 static __inline__ Uint16
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
74 SDL_Swap16(Uint16 x)
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
75 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
76 __asm__("xchgb %b0,%h0": "=Q"(x):"0"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
77 return x;
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
78 }
859
6b28c91bf3d2 This works on MacOS X too. :)
Sam Lantinga <slouken@libsdl.org>
parents: 849
diff changeset
79 #elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
80 static __inline__ Uint16
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
81 SDL_Swap16(Uint16 x)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
82 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
83 Uint16 result;
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
84
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
85 __asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
86 return result;
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
87 }
1044
d36ea7925763 Optimize also for 68020 and higher CPUs
Patrice Mandin <patmandin@gmail.com>
parents: 1033
diff changeset
88 #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
89 static __inline__ Uint16
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
90 SDL_Swap16(Uint16 x)
985
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
91 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
92 __asm__("rorw #8,%0": "=d"(x): "0"(x):"cc");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
93 return x;
985
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
94 }
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
95 #else
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
96 static __inline__ Uint16
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
97 SDL_Swap16(Uint16 x)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
98 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
99 return ((x << 8) | (x >> 8));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
100 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
101 #endif
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
102
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
103 #if defined(__GNUC__) && defined(__i386__)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
104 static __inline__ Uint32
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
105 SDL_Swap32(Uint32 x)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
106 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
107 __asm__("bswap %0": "=r"(x):"0"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
108 return x;
849
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 #elif defined(__GNUC__) && defined(__x86_64__)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
111 static __inline__ Uint32
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
112 SDL_Swap32(Uint32 x)
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
113 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
114 __asm__("bswapl %0": "=r"(x):"0"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
115 return x;
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
116 }
859
6b28c91bf3d2 This works on MacOS X too. :)
Sam Lantinga <slouken@libsdl.org>
parents: 849
diff changeset
117 #elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
118 static __inline__ Uint32
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
119 SDL_Swap32(Uint32 x)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
120 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
121 Uint32 result;
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
122
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
123 __asm__("rlwimi %0,%2,24,16,23": "=&r"(result):"0"(x >> 24), "r"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
124 __asm__("rlwimi %0,%2,8,8,15": "=&r"(result):"0"(result), "r"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
125 __asm__("rlwimi %0,%2,24,0,7": "=&r"(result):"0"(result), "r"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
126 return result;
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
127 }
1044
d36ea7925763 Optimize also for 68020 and higher CPUs
Patrice Mandin <patmandin@gmail.com>
parents: 1033
diff changeset
128 #elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__))
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
129 static __inline__ Uint32
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
130 SDL_Swap32(Uint32 x)
985
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
131 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
132 __asm__("rorw #8,%0\n\tswap %0\n\trorw #8,%0": "=d"(x): "0"(x):"cc");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
133 return x;
985
cec525374267 Add m68k assembly routines for endianness conversion
Patrice Mandin <patmandin@gmail.com>
parents: 859
diff changeset
134 }
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
135 #else
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
136 static __inline__ Uint32
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
137 SDL_Swap32(Uint32 x)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
138 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
139 return ((x << 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) |
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
140 (x >> 24));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
141 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
142 #endif
848
85af65457959 Avoid using kernel internal headers
Sam Lantinga <slouken@libsdl.org>
parents: 769
diff changeset
143
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
144 #ifdef SDL_HAS_64BIT_TYPE
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
145 #if defined(__GNUC__) && defined(__i386__)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
146 static __inline__ Uint64
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
147 SDL_Swap64(Uint64 x)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
148 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
149 union
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
150 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
151 struct
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
152 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
153 Uint32 a, b;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
154 } s;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
155 Uint64 u;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
156 } v;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
157 v.u = x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
158 __asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1": "=r"(v.s.a), "=r"(v.s.b):"0"(v.s.a),
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
159 "1"(v.s.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
160 b));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
161 return v.u;
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
162 }
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
163 #elif defined(__GNUC__) && defined(__x86_64__)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
164 static __inline__ Uint64
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
165 SDL_Swap64(Uint64 x)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
166 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
167 __asm__("bswapq %0": "=r"(x):"0"(x));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
168 return x;
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
169 }
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
170 #else
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
171 static __inline__ Uint64
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
172 SDL_Swap64(Uint64 x)
849
bab227101de4 Added inline byte swapping code for other architectures
Sam Lantinga <slouken@libsdl.org>
parents: 848
diff changeset
173 {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
174 Uint32 hi, lo;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
175
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
176 /* Separate into high and low 32-bit values and swap them */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
177 lo = (Uint32) (x & 0xFFFFFFFF);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
178 x >>= 32;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
179 hi = (Uint32) (x & 0xFFFFFFFF);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
180 x = SDL_Swap32(lo);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
181 x <<= 32;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
182 x |= SDL_Swap32(hi);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
183 return (x);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
184 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
185 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
186 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
187 /* This is mainly to keep compilers from complaining in SDL code.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
188 If there is no real 64-bit datatype, then compilers will complain about
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
189 the fake 64-bit datatype that SDL provides when it compiles user code.
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
190 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
191 #define SDL_Swap64(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
192 #endif /* SDL_HAS_64BIT_TYPE */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
193
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
194
1984
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
195 static __inline__ float
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
196 SDL_SwapFloat(float x)
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
197 {
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1984
diff changeset
198 union
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1984
diff changeset
199 {
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1984
diff changeset
200 float f;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1984
diff changeset
201 Uint32 ui32;
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1984
diff changeset
202 } swapper;
1984
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
203 swapper.f = x;
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
204 swapper.ui32 = SDL_Swap32(swapper.ui32);
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
205 return swapper.f;
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
206 }
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
207
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
208
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
209 /* Byteswap item from the specified endianness to the native endianness */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
210 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
211 #define SDL_SwapLE16(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
212 #define SDL_SwapLE32(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
213 #define SDL_SwapLE64(X) (X)
1984
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
214 #define SDL_SwapFloatLE(X) (X)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
215 #define SDL_SwapBE16(X) SDL_Swap16(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
216 #define SDL_SwapBE32(X) SDL_Swap32(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
217 #define SDL_SwapBE64(X) SDL_Swap64(X)
1984
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
218 #define SDL_SwapFloatBE(X) SDL_SwapFloat(X)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
219 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
220 #define SDL_SwapLE16(X) SDL_Swap16(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
221 #define SDL_SwapLE32(X) SDL_Swap32(X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
222 #define SDL_SwapLE64(X) SDL_Swap64(X)
1984
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
223 #define SDL_SwapFloatLE(X) SDL_SwapFloat(X)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
224 #define SDL_SwapBE16(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
225 #define SDL_SwapBE32(X) (X)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
226 #define SDL_SwapBE64(X) (X)
1984
b910bcabec26 Added SDL_SwapFloat* function/macros. Reference Bugzilla #293.
Ryan C. Gordon <icculus@icculus.org>
parents: 1895
diff changeset
227 #define SDL_SwapFloatBE(X) (X)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
228 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
229
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
230 /* Ends C function definitions when using C++ */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
231 #ifdef __cplusplus
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
232 /* *INDENT-OFF* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
233 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
234 /* *INDENT-ON* */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
235 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
236 #include "close_code.h"
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
237
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
238 #endif /* _SDL_endian_h */
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
239
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1475
diff changeset
240 /* vi: set ts=4 sw=4 expandtab: */