2 * inline assembly helper macros
4 * This file is part of FFmpeg.
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.
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.
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
21 #ifndef AVCODEC_X86_INLINE_ASM_H
22 #define AVCODEC_X86_INLINE_ASM_H
24 #include "constants.h"
26 #define MOVQ_WONE(regd) \
28 "pcmpeqd %%" #regd ", %%" #regd " \n\t" \
29 "psrlw $15, %%" #regd ::)
31 #define JUMPALIGN() __asm__ volatile (".p2align 3"::)
32 #define MOVQ_ZERO(regd) __asm__ volatile ("pxor %%"#regd", %%"#regd ::)
34 #define MOVQ_BFE(regd) \
36 "pcmpeqd %%"#regd", %%"#regd" \n\t" \
37 "paddb %%"#regd", %%"#regd" \n\t" ::)
40 #define MOVQ_WTWO(regd) __asm__ volatile ("movq %0, %%"#regd" \n\t" :: "m"(ff_wtwo))
42 // for shared library it's better to use this way for accessing constants
44 #define MOVQ_WTWO(regd) \
46 "pcmpeqd %%"#regd", %%"#regd" \n\t" \
47 "psrlw $15, %%"#regd" \n\t" \
48 "psllw $1, %%"#regd" \n\t"::)
52 // using regr as temporary and for the output result
53 // first argument is unmodifed and second is trashed
54 // regfe is supposed to contain 0xfefefefefefefefe
55 #define PAVGB_MMX_NO_RND(rega, regb, regr, regfe) \
56 "movq "#rega", "#regr" \n\t" \
57 "pand "#regb", "#regr" \n\t" \
58 "pxor "#rega", "#regb" \n\t" \
59 "pand "#regfe", "#regb" \n\t" \
60 "psrlq $1, "#regb" \n\t" \
61 "paddb "#regb", "#regr" \n\t"
63 #define PAVGB_MMX(rega, regb, regr, regfe) \
64 "movq "#rega", "#regr" \n\t" \
65 "por "#regb", "#regr" \n\t" \
66 "pxor "#rega", "#regb" \n\t" \
67 "pand "#regfe", "#regb" \n\t" \
68 "psrlq $1, "#regb" \n\t" \
69 "psubb "#regb", "#regr" \n\t"
71 // mm6 is supposed to contain 0xfefefefefefefefe
72 #define PAVGBP_MMX_NO_RND(rega, regb, regr, regc, regd, regp) \
73 "movq "#rega", "#regr" \n\t" \
74 "movq "#regc", "#regp" \n\t" \
75 "pand "#regb", "#regr" \n\t" \
76 "pand "#regd", "#regp" \n\t" \
77 "pxor "#rega", "#regb" \n\t" \
78 "pxor "#regc", "#regd" \n\t" \
79 "pand %%mm6, "#regb" \n\t" \
80 "pand %%mm6, "#regd" \n\t" \
81 "psrlq $1, "#regb" \n\t" \
82 "psrlq $1, "#regd" \n\t" \
83 "paddb "#regb", "#regr" \n\t" \
84 "paddb "#regd", "#regp" \n\t"
86 #define PAVGBP_MMX(rega, regb, regr, regc, regd, regp) \
87 "movq "#rega", "#regr" \n\t" \
88 "movq "#regc", "#regp" \n\t" \
89 "por "#regb", "#regr" \n\t" \
90 "por "#regd", "#regp" \n\t" \
91 "pxor "#rega", "#regb" \n\t" \
92 "pxor "#regc", "#regd" \n\t" \
93 "pand %%mm6, "#regb" \n\t" \
94 "pand %%mm6, "#regd" \n\t" \
95 "psrlq $1, "#regd" \n\t" \
96 "psrlq $1, "#regb" \n\t" \
97 "psubb "#regb", "#regr" \n\t" \
98 "psubb "#regd", "#regp" \n\t"
100 #endif /* AVCODEC_X86_INLINE_ASM_H */