| /* |
| * 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 */ |