64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
#if !defined(_x86_mmxfrag_H)
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# define _x86_mmxfrag_H (1)
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# include <stddef.h>
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# include "x86int.h"
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#if defined(OC_X86_ASM)
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/*Copies an 8x8 block of pixels from _src to _dst, assuming _ystride bytes
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between rows.*/
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#define OC_FRAG_COPY_MMX(_dst,_src,_ystride) \
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do{ \
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const unsigned char *src; \
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unsigned char *dst; \
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ptrdiff_t ystride3; \
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src=(_src); \
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dst=(_dst); \
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__asm__ __volatile__( \
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/*src+0*ystride*/ \
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"movq (%[src]),%%mm0\n\t" \
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/*src+1*ystride*/ \
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"movq (%[src],%[ystride]),%%mm1\n\t" \
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/*ystride3=ystride*3*/ \
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"lea (%[ystride],%[ystride],2),%[ystride3]\n\t" \
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/*src+2*ystride*/ \
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"movq (%[src],%[ystride],2),%%mm2\n\t" \
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/*src+3*ystride*/ \
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"movq (%[src],%[ystride3]),%%mm3\n\t" \
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/*dst+0*ystride*/ \
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"movq %%mm0,(%[dst])\n\t" \
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/*dst+1*ystride*/ \
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"movq %%mm1,(%[dst],%[ystride])\n\t" \
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/*Pointer to next 4.*/ \
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"lea (%[src],%[ystride],4),%[src]\n\t" \
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/*dst+2*ystride*/ \
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"movq %%mm2,(%[dst],%[ystride],2)\n\t" \
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/*dst+3*ystride*/ \
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"movq %%mm3,(%[dst],%[ystride3])\n\t" \
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/*Pointer to next 4.*/ \
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"lea (%[dst],%[ystride],4),%[dst]\n\t" \
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/*src+0*ystride*/ \
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"movq (%[src]),%%mm0\n\t" \
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/*src+1*ystride*/ \
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"movq (%[src],%[ystride]),%%mm1\n\t" \
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/*src+2*ystride*/ \
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"movq (%[src],%[ystride],2),%%mm2\n\t" \
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/*src+3*ystride*/ \
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"movq (%[src],%[ystride3]),%%mm3\n\t" \
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/*dst+0*ystride*/ \
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"movq %%mm0,(%[dst])\n\t" \
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/*dst+1*ystride*/ \
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"movq %%mm1,(%[dst],%[ystride])\n\t" \
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/*dst+2*ystride*/ \
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"movq %%mm2,(%[dst],%[ystride],2)\n\t" \
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/*dst+3*ystride*/ \
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"movq %%mm3,(%[dst],%[ystride3])\n\t" \
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:[dst]"+r"(dst),[src]"+r"(src),[ystride3]"=&r"(ystride3) \
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:[ystride]"r"((ptrdiff_t)(_ystride)) \
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:"memory" \
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); \
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} \
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while(0)
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# endif
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#endif
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