Globally rename the header inclusion guard names.
[libav.git] / libavcodec / ppc / gcc_fixes.h
1 /*
2 * gcc fixes for altivec.
3 * Used to workaround broken gcc (FSF gcc-3 pre gcc-3.3)
4 * and to stay somewhat compatible with Darwin.
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #ifndef AVCODEC_PPC_GCC_FIXES_H
24 #define AVCODEC_PPC_GCC_FIXES_H
25
26 #include "config.h"
27
28 #ifdef HAVE_ALTIVEC_H
29 #include <altivec.h>
30 #endif
31
32 #if (__GNUC__ < 4)
33 # define REG_v(a)
34 #else
35 # define REG_v(a) asm ( #a )
36 #endif
37
38 #if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
39
40 /* This code was provided to me by Bartosch Pixa
41 * as a separate header file (broken_mergel.h).
42 * thanks to lu_zero for the workaround.
43 *
44 * See this mail for more information:
45 * http://gcc.gnu.org/ml/gcc/2003-04/msg00967.html
46 */
47
48 static inline vector signed char ff_vmrglb (vector signed char const A,
49 vector signed char const B)
50 {
51 static const vector unsigned char lowbyte = {
52 0x08, 0x18, 0x09, 0x19, 0x0a, 0x1a, 0x0b, 0x1b,
53 0x0c, 0x1c, 0x0d, 0x1d, 0x0e, 0x1e, 0x0f, 0x1f
54 };
55 return vec_perm (A, B, lowbyte);
56 }
57
58 static inline vector signed short ff_vmrglh (vector signed short const A,
59 vector signed short const B)
60 {
61 static const vector unsigned char lowhalf = {
62 0x08, 0x09, 0x18, 0x19, 0x0a, 0x0b, 0x1a, 0x1b,
63 0x0c, 0x0d, 0x1c, 0x1d, 0x0e, 0x0f, 0x1e, 0x1f
64 };
65 return vec_perm (A, B, lowhalf);
66 }
67
68 static inline vector signed int ff_vmrglw (vector signed int const A,
69 vector signed int const B)
70 {
71 static const vector unsigned char lowword = {
72 0x08, 0x09, 0x0a, 0x0b, 0x18, 0x19, 0x1a, 0x1b,
73 0x0c, 0x0d, 0x0e, 0x0f, 0x1c, 0x1d, 0x1e, 0x1f
74 };
75 return vec_perm (A, B, lowword);
76 }
77 /*#define ff_vmrglb ff_vmrglb
78 #define ff_vmrglh ff_vmrglh
79 #define ff_vmrglw ff_vmrglw
80 */
81 #undef vec_mergel
82
83 #define vec_mergel(a1, a2) \
84 __ch (__bin_args_eq (vector signed char, (a1), vector signed char, (a2)), \
85 ((vector signed char) ff_vmrglb ((vector signed char) (a1), (vector signed char) (a2))), \
86 __ch (__bin_args_eq (vector unsigned char, (a1), vector unsigned char, (a2)), \
87 ((vector unsigned char) ff_vmrglb ((vector signed char) (a1), (vector signed char) (a2))), \
88 __ch (__bin_args_eq (vector signed short, (a1), vector signed short, (a2)), \
89 ((vector signed short) ff_vmrglh ((vector signed short) (a1), (vector signed short) (a2))), \
90 __ch (__bin_args_eq (vector unsigned short, (a1), vector unsigned short, (a2)), \
91 ((vector unsigned short) ff_vmrglh ((vector signed short) (a1), (vector signed short) (a2))), \
92 __ch (__bin_args_eq (vector float, (a1), vector float, (a2)), \
93 ((vector float) ff_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
94 __ch (__bin_args_eq (vector signed int, (a1), vector signed int, (a2)), \
95 ((vector signed int) ff_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
96 __ch (__bin_args_eq (vector unsigned int, (a1), vector unsigned int, (a2)), \
97 ((vector unsigned int) ff_vmrglw ((vector signed int) (a1), (vector signed int) (a2))), \
98 __altivec_link_error_invalid_argument ())))))))
99
100 #endif /* (__GNUC__ == 3 && __GNUC_MINOR__ < 3) */
101
102 #endif /* AVCODEC_PPC_GCC_FIXES_H */