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1 | /* |
2 | * inline assembly helper macros | |
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 | #ifndef AVCODEC_X86_INLINE_ASM_H | |
22 | #define AVCODEC_X86_INLINE_ASM_H | |
23 | ||
24 | #include "constants.h" | |
25 | ||
26 | #define MOVQ_WONE(regd) \ | |
27 | __asm__ volatile ( \ | |
28 | "pcmpeqd %%" #regd ", %%" #regd " \n\t" \ | |
29 | "psrlw $15, %%" #regd ::) | |
30 | ||
31 | #define JUMPALIGN() __asm__ volatile (".p2align 3"::) | |
32 | #define MOVQ_ZERO(regd) __asm__ volatile ("pxor %%"#regd", %%"#regd ::) | |
33 | ||
34 | #define MOVQ_BFE(regd) \ | |
35 | __asm__ volatile ( \ | |
36 | "pcmpeqd %%"#regd", %%"#regd" \n\t" \ | |
37 | "paddb %%"#regd", %%"#regd" \n\t" ::) | |
38 | ||
39 | #ifndef PIC | |
40 | #define MOVQ_WTWO(regd) __asm__ volatile ("movq %0, %%"#regd" \n\t" :: "m"(ff_pw_2)) | |
41 | #else | |
42 | // for shared library it's better to use this way for accessing constants | |
43 | // pcmpeqd -> -1 | |
44 | #define MOVQ_WTWO(regd) \ | |
45 | __asm__ volatile ( \ | |
46 | "pcmpeqd %%"#regd", %%"#regd" \n\t" \ | |
47 | "psrlw $15, %%"#regd" \n\t" \ | |
48 | "psllw $1, %%"#regd" \n\t"::) | |
49 | ||
50 | #endif | |
51 | ||
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" | |
62 | ||
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" | |
70 | ||
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" | |
85 | ||
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" | |
99 | ||
100 | #endif /* AVCODEC_X86_INLINE_ASM_H */ |