a3edeed2021a4fc70bde454444d034645185f052
[deb_ffmpeg.git] / asm.S
1 /*
2 * Copyright (c) 2009 Loren Merritt
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "config.h"
22
23 #define GLUE(a, b) a ## b
24 #define JOIN(a, b) GLUE(a, b)
25 #define X(s) JOIN(EXTERN_ASM, s)
26
27 #if ARCH_PPC64
28
29 #define PTR .quad
30 #define lp ld
31 #define lpx ldx
32 #define stp std
33 #define stpu stdu
34 #define PS 8
35 #define L(s) JOIN(., s)
36
37 .macro extfunc name
38 .global X(\name)
39 #if _CALL_ELF == 2
40 .text
41 X(\name):
42 addis %r2, %r12, .TOC.-X(\name)@ha
43 addi %r2, %r2, .TOC.-X(\name)@l
44 .localentry X(\name), .-X(\name)
45 #else
46 .section .opd, "aw"
47 X(\name):
48 .quad L(\name), .TOC.@tocbase, 0
49 .previous
50 .type X(\name), STT_FUNC
51 L(\name):
52 #endif
53 .endm
54
55 .macro movrel rd, sym, gp
56 ld \rd, \sym@got(r2)
57 .endm
58
59 .macro get_got rd
60 .endm
61
62 #else /* ARCH_PPC64 */
63
64 #define PTR .int
65 #define lp lwz
66 #define lpx lwzx
67 #define stp stw
68 #define stpu stwu
69 #define PS 4
70 #define L(s) s
71
72 .macro extfunc name
73 .global X(\name)
74 .type X(\name), STT_FUNC
75 X(\name):
76 \name:
77 .endm
78
79 .macro movrel rd, sym, gp
80 #if CONFIG_PIC
81 lwz \rd, \sym@got(\gp)
82 #else
83 lis \rd, \sym@ha
84 la \rd, \sym@l(\rd)
85 #endif
86 .endm
87
88 .macro get_got rd
89 #if CONFIG_PIC
90 bcl 20, 31, .Lgot\@
91 .Lgot\@:
92 mflr \rd
93 addis \rd, \rd, _GLOBAL_OFFSET_TABLE_ - .Lgot\@@ha
94 addi \rd, \rd, _GLOBAL_OFFSET_TABLE_ - .Lgot\@@l
95 #endif
96 .endm
97
98 #endif /* ARCH_PPC64 */
99
100 #if HAVE_IBM_ASM
101
102 .macro DEFINE_REG n
103 .equiv r\n, \n
104 .equiv f\n, \n
105 .equiv v\n, \n
106 .endm
107
108 DEFINE_REG 0
109 DEFINE_REG 1
110 DEFINE_REG 2
111 DEFINE_REG 3
112 DEFINE_REG 4
113 DEFINE_REG 5
114 DEFINE_REG 6
115 DEFINE_REG 7
116 DEFINE_REG 8
117 DEFINE_REG 9
118 DEFINE_REG 10
119 DEFINE_REG 11
120 DEFINE_REG 12
121 DEFINE_REG 13
122 DEFINE_REG 14
123 DEFINE_REG 15
124 DEFINE_REG 16
125 DEFINE_REG 17
126 DEFINE_REG 18
127 DEFINE_REG 19
128 DEFINE_REG 20
129 DEFINE_REG 21
130 DEFINE_REG 22
131 DEFINE_REG 23
132 DEFINE_REG 24
133 DEFINE_REG 25
134 DEFINE_REG 26
135 DEFINE_REG 27
136 DEFINE_REG 28
137 DEFINE_REG 29
138 DEFINE_REG 30
139 DEFINE_REG 31
140
141 #endif /* HAVE_IBM_ASM */