diff options
| author | Diego Biurrun <diego@biurrun.de> | 2014-01-27 15:06:54 +0100 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2014-03-22 06:17:29 -0700 |
| commit | 1a8d0cf77ed2611e542ae98f341d4c43a04467bd (patch) | |
| tree | 46a3521745d61522f665f9cc60c91fdcbc7411b8 /libavcodec/x86/inline_asm.h | |
| parent | 1df0b061621b10edde87e3ab7ea83aed381c574f (diff) | |
x86: dsputil: Move inline assembly macros to a separate header
Diffstat (limited to 'libavcodec/x86/inline_asm.h')
| -rw-r--r-- | libavcodec/x86/inline_asm.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/libavcodec/x86/inline_asm.h b/libavcodec/x86/inline_asm.h new file mode 100644 index 0000000000..e4affabc87 --- /dev/null +++ b/libavcodec/x86/inline_asm.h @@ -0,0 +1,100 @@ +/* + * inline assembly helper macros + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; 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_wtwo)) +#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 */ |