mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-21 15:00:27 +00:00
101 lines
4.6 KiB
C
101 lines
4.6 KiB
C
/*
|
|
* inline assembly helper macros
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_X86_INLINE_ASM_H
|
|
#define AVCODEC_X86_INLINE_ASM_H
|
|
|
|
#include "constants.h"
|
|
|
|
#define MOVQ_WONE(regd) \
|
|
__asm__ volatile ( \
|
|
"pcmpeqd %%" #regd ", %%" #regd " \n\t" \
|
|
"psrlw $15, %%" #regd ::)
|
|
|
|
#define JUMPALIGN() __asm__ volatile (".p2align 3"::)
|
|
#define MOVQ_ZERO(regd) __asm__ volatile ("pxor %%"#regd", %%"#regd ::)
|
|
|
|
#define MOVQ_BFE(regd) \
|
|
__asm__ volatile ( \
|
|
"pcmpeqd %%"#regd", %%"#regd" \n\t" \
|
|
"paddb %%"#regd", %%"#regd" \n\t" ::)
|
|
|
|
#ifndef PIC
|
|
#define MOVQ_WTWO(regd) __asm__ volatile ("movq %0, %%"#regd" \n\t" :: "m"(ff_pw_2))
|
|
#else
|
|
// for shared library it's better to use this way for accessing constants
|
|
// pcmpeqd -> -1
|
|
#define MOVQ_WTWO(regd) \
|
|
__asm__ volatile ( \
|
|
"pcmpeqd %%"#regd", %%"#regd" \n\t" \
|
|
"psrlw $15, %%"#regd" \n\t" \
|
|
"psllw $1, %%"#regd" \n\t"::)
|
|
|
|
#endif
|
|
|
|
// using regr as temporary and for the output result
|
|
// first argument is unmodifed and second is trashed
|
|
// regfe is supposed to contain 0xfefefefefefefefe
|
|
#define PAVGB_MMX_NO_RND(rega, regb, regr, regfe) \
|
|
"movq "#rega", "#regr" \n\t" \
|
|
"pand "#regb", "#regr" \n\t" \
|
|
"pxor "#rega", "#regb" \n\t" \
|
|
"pand "#regfe", "#regb" \n\t" \
|
|
"psrlq $1, "#regb" \n\t" \
|
|
"paddb "#regb", "#regr" \n\t"
|
|
|
|
#define PAVGB_MMX(rega, regb, regr, regfe) \
|
|
"movq "#rega", "#regr" \n\t" \
|
|
"por "#regb", "#regr" \n\t" \
|
|
"pxor "#rega", "#regb" \n\t" \
|
|
"pand "#regfe", "#regb" \n\t" \
|
|
"psrlq $1, "#regb" \n\t" \
|
|
"psubb "#regb", "#regr" \n\t"
|
|
|
|
// mm6 is supposed to contain 0xfefefefefefefefe
|
|
#define PAVGBP_MMX_NO_RND(rega, regb, regr, regc, regd, regp) \
|
|
"movq "#rega", "#regr" \n\t" \
|
|
"movq "#regc", "#regp" \n\t" \
|
|
"pand "#regb", "#regr" \n\t" \
|
|
"pand "#regd", "#regp" \n\t" \
|
|
"pxor "#rega", "#regb" \n\t" \
|
|
"pxor "#regc", "#regd" \n\t" \
|
|
"pand %%mm6, "#regb" \n\t" \
|
|
"pand %%mm6, "#regd" \n\t" \
|
|
"psrlq $1, "#regb" \n\t" \
|
|
"psrlq $1, "#regd" \n\t" \
|
|
"paddb "#regb", "#regr" \n\t" \
|
|
"paddb "#regd", "#regp" \n\t"
|
|
|
|
#define PAVGBP_MMX(rega, regb, regr, regc, regd, regp) \
|
|
"movq "#rega", "#regr" \n\t" \
|
|
"movq "#regc", "#regp" \n\t" \
|
|
"por "#regb", "#regr" \n\t" \
|
|
"por "#regd", "#regp" \n\t" \
|
|
"pxor "#rega", "#regb" \n\t" \
|
|
"pxor "#regc", "#regd" \n\t" \
|
|
"pand %%mm6, "#regb" \n\t" \
|
|
"pand %%mm6, "#regd" \n\t" \
|
|
"psrlq $1, "#regd" \n\t" \
|
|
"psrlq $1, "#regb" \n\t" \
|
|
"psubb "#regb", "#regr" \n\t" \
|
|
"psubb "#regd", "#regp" \n\t"
|
|
|
|
#endif /* AVCODEC_X86_INLINE_ASM_H */
|