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 */ 101