/* * 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 */