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- /*
- * 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 unmodified 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 */
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