--- /dev/null
- * This file is part of Libav.
+ /*
+ * inline assembly helper macros
+ *
- * Libav is free software; you can redistribute it and/or
++ * This file is part of FFmpeg.
+ *
- * Libav is distributed in the hope that it will be useful,
++ * 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.
+ *
- * License along with Libav; if not, write to the Free Software
++ * 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_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 */