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739 lines
22 KiB
739 lines
22 KiB
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#ifndef INTEL
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/**
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Some compilers cannot compile empty files.
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*/
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IDCT_mmx_dummy:
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.section .note.GNU-stack,"",%progbits
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#endif
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#ifdef INTEL
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/*
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* the input data is tranposed and each 16 bit element in the 8x8 matrix
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* is left aligned:
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* for example in 11...1110000 format
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* If the iDCT is of I macroblock then 0.5 needs to be added to the;
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* DC Component
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* (element[0][0] of the matrix)
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*/
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/* extrn re_matrix */
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.data
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.align 16
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.type preSC,@object
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preSC: .short 16384,22725,21407,19266,16384,12873,8867,4520
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.short 22725,31521,29692,26722,22725,17855,12299,6270
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.short 21407,29692,27969,25172,21407,16819,11585,5906
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.short 19266,26722,25172,22654,19266,15137,10426,5315
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.short 16384,22725,21407,19266,16384,12873,8867,4520
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.short 12873,17855,16819,15137,25746,20228,13933,7103
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.short 17734,24598,23170,20853,17734,13933,9597,4892
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.short 18081,25080,23624,21261,18081,14206,9785,4988
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.size preSC,128
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.align 8
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.type x0005000200010001,@object
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.size x0005000200010001,8
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x0005000200010001:
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.long 0x00010001,0x00050002
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.align 8
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.type x0040000000000000,@object
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.size x0040000000000000,8
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x0040000000000000:
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.long 0, 0x00400000
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.align 8
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.type x5a825a825a825a82,@object
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.size x5a825a825a825a82,8
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x5a825a825a825a82:
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.long 0x5a825a82, 0x5a825a82
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.align 8
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.type x539f539f539f539f,@object
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.size x539f539f539f539f,8
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x539f539f539f539f:
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.long 0x539f539f,0x539f539f
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.align 8
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.type x4546454645464546,@object
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.size x4546454645464546,8
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x4546454645464546:
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.long 0x45464546,0x45464546
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.align 8
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.type x61f861f861f861f8,@object
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.size x61f861f861f861f8,8
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x61f861f861f861f8:
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.long 0x61f861f8,0x61f861f8
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.align 8
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.type scratch1,@object
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.size scratch1,8
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scratch1:
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.long 0,0
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.align 8
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.type scratch3,@object
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.size scratch3,8
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scratch3:
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.long 0,0
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.align 8
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.type scratch5,@object
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.size scratch5,8
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scratch5:
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.long 0,0
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.align 8
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.type scratch7,@object
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.size scratch7,8
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scratch7:
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.long 0,0
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.type x0,@object
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.size x0,8
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x0:
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.long 0,0
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.align 8
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.text
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.align 4
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.globl IDCT_mmx
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.type IDCT_mmx,@function
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IDCT_mmx:
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pushl %ebp
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movl %esp,%ebp
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pushl %ebx
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pushl %ecx
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pushl %edx
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pushl %esi
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pushl %edi
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movl 8(%ebp),%esi /* source matrix */
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#if 0
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movq (%esi), %mm0
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movq 8(%esi), %mm1
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psllw $4, %mm0
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movq 16(%esi), %mm2
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psllw $4, %mm1
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movq 24(%esi), %mm3
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psllw $4, %mm2
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movq 32(%esi), %mm4
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psllw $4, %mm3
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movq 40(%esi), %mm5
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psllw $4, %mm4
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movq 48(%esi), %mm6
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psllw $4, %mm5
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movq 56(%esi), %mm7
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psllw $4, %mm6
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psllw $4, %mm7
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movq %mm0, (%esi)
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movq %mm1, 8(%esi)
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movq %mm2,16(%esi)
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movq %mm3,24(%esi)
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movq %mm4,32(%esi)
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movq %mm5,40(%esi)
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movq %mm6,48(%esi)
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movq %mm7,56(%esi)
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movq 64(%esi), %mm0
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movq 72(%esi), %mm1
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psllw $4, %mm0
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movq 80(%esi), %mm2
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psllw $4, %mm1
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movq 88(%esi), %mm3
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psllw $4, %mm2
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movq 96(%esi), %mm4
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psllw $4, %mm3
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movq 104(%esi), %mm5
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psllw $4, %mm4
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movq 112(%esi), %mm6
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psllw $4, %mm5
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movq 120(%esi), %mm7
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psllw $4, %mm6
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psllw $4, %mm7
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movq %mm0,64(%esi)
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movq %mm1,72(%esi)
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movq %mm2,80(%esi)
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movq %mm3,88(%esi)
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movq %mm4,96(%esi)
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movq %mm5,104(%esi)
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movq %mm6,112(%esi)
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movq %mm7,120(%esi)
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#endif
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leal preSC, %ecx
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/* column 0: even part
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* use V4, V12, V0, V8 to produce V22..V25
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*/
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movq 8*12(%ecx), %mm0 /* maybe the first mul can be done together */
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/* with the dequantization in iHuff module */
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pmulhw 8*12(%esi), %mm0 /* V12 */
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movq 8*4(%ecx), %mm1
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pmulhw 8*4(%esi), %mm1 /* V4 */
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movq (%ecx), %mm3
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psraw $1, %mm0 /* t64=t66 */
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pmulhw (%esi), %mm3 /* V0 */
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movq 8*8(%ecx), %mm5 /* duplicate V4 */
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movq %mm1, %mm2 /* added 11/1/96 */
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pmulhw 8*8(%esi),%mm5 /* V8 */
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psubsw %mm0, %mm1 /* V16 */
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pmulhw x5a825a825a825a82, %mm1 /* 23170 ->V18 */
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paddsw %mm0, %mm2 /* V17 */
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movq %mm2, %mm0 /* duplicate V17 */
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psraw $1, %mm2 /* t75=t82 */
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psraw $2, %mm0 /* t72 */
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movq %mm3, %mm4 /* duplicate V0 */
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paddsw %mm5, %mm3 /* V19 */
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psubsw %mm5, %mm4 /* V20 ;mm5 free */
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/* moved from the block below */
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movq 8*10(%ecx), %mm7
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psraw $1, %mm3 /* t74=t81 */
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movq %mm3, %mm6 /* duplicate t74=t81 */
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psraw $2, %mm4 /* t77=t79 */
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psubsw %mm0, %mm1 /* V21 ; mm0 free */
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paddsw %mm2, %mm3 /* V22 */
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movq %mm1, %mm5 /* duplicate V21 */
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paddsw %mm4, %mm1 /* V23 */
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movq %mm3, 8*4(%esi) /* V22 */
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psubsw %mm5, %mm4 /* V24; mm5 free */
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movq %mm1, 8*12(%esi) /* V23 */
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psubsw %mm2, %mm6 /* V25; mm2 free */
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movq %mm4, (%esi) /* V24 */
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/* keep mm6 alive all along the next block */
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/* movq %mm6, 8*8(%esi) V25 */
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/* column 0: odd part
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* use V2, V6, V10, V14 to produce V31, V39, V40, V41
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*/
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/* moved above: movq 8*10(%ecx), %mm7 */
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pmulhw 8*10(%esi), %mm7 /* V10 */
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movq 8*6(%ecx), %mm0
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pmulhw 8*6(%esi), %mm0 /* V6 */
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movq 8*2(%ecx), %mm5
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movq %mm7, %mm3 /* duplicate V10 */
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pmulhw 8*2(%esi), %mm5 /* V2 */
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movq 8*14(%ecx), %mm4
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psubsw %mm0, %mm7 /* V26 */
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pmulhw 8*14(%esi), %mm4 /* V14 */
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paddsw %mm0, %mm3 /* V29 ; free mm0 */
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movq %mm7, %mm1 /* duplicate V26 */
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psraw $1, %mm3 /* t91=t94 */
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pmulhw x539f539f539f539f,%mm7 /* V33 */
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psraw $1, %mm1 /* t96 */
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movq %mm5, %mm0 /* duplicate V2 */
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psraw $2, %mm4 /* t85=t87 */
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paddsw %mm4,%mm5 /* V27 */
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psubsw %mm4, %mm0 /* V28 ; free mm4 */
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movq %mm0, %mm2 /* duplicate V28 */
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psraw $1, %mm5 /* t90=t93 */
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pmulhw x4546454645464546,%mm0 /* V35 */
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psraw $1, %mm2 /* t97 */
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movq %mm5, %mm4 /* duplicate t90=t93 */
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psubsw %mm2, %mm1 /* V32 ; free mm2 */
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pmulhw x61f861f861f861f8,%mm1 /* V36 */
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psllw $1, %mm7 /* t107 */
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paddsw %mm3, %mm5 /* V31 */
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psubsw %mm3, %mm4 /* V30 ; free mm3 */
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pmulhw x5a825a825a825a82,%mm4 /* V34 */
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nop
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psubsw %mm1, %mm0 /* V38 */
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psubsw %mm7, %mm1 /* V37 ; free mm7 */
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psllw $1, %mm1 /* t114 */
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/* move from the next block */
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movq %mm6, %mm3 /* duplicate V25 */
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/* move from the next block */
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movq 8*4(%esi), %mm7 /* V22 */
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psllw $1, %mm0 /* t110 */
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psubsw %mm5, %mm0 /* V39 (mm5 needed for next block) */
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psllw $2, %mm4 /* t112 */
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/* moved from the next block */
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movq 8*12(%esi), %mm2 /* V23 */
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psubsw %mm0, %mm4 /* V40 */
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paddsw %mm4, %mm1 /* V41; free mm0 */
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/* moved from the next block */
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psllw $1, %mm2 /* t117=t125 */
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/* column 0: output butterfly */
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/* moved above:
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* movq %mm6, %mm3 duplicate V25
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* movq 8*4(%esi), %mm7 V22
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* movq 8*12(%esi), %mm2 V23
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* psllw $1, %mm2 t117=t125
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*/
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psubsw %mm1, %mm6 /* tm6 */
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paddsw %mm1, %mm3 /* tm8; free mm1 */
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movq %mm7, %mm1 /* duplicate V22 */
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paddsw %mm5, %mm7 /* tm0 */
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movq %mm3, 8*8(%esi) /* tm8; free mm3 */
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psubsw %mm5, %mm1 /* tm14; free mm5 */
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movq %mm6, 8*6(%esi) /* tm6; free mm6 */
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movq %mm2, %mm3 /* duplicate t117=t125 */
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movq (%esi), %mm6 /* V24 */
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paddsw %mm0, %mm2 /* tm2 */
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movq %mm7, (%esi) /* tm0; free mm7 */
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psubsw %mm0, %mm3 /* tm12; free mm0 */
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movq %mm1, 8*14(%esi) /* tm14; free mm1 */
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psllw $1, %mm6 /* t119=t123 */
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movq %mm2, 8*2(%esi) /* tm2; free mm2 */
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movq %mm6, %mm0 /* duplicate t119=t123 */
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movq %mm3, 8*12(%esi) /* tm12; free mm3 */
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paddsw %mm4, %mm6 /* tm4 */
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/* moved from next block */
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movq 8*5(%ecx), %mm1
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psubsw %mm4, %mm0 /* tm10; free mm4 */
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/* moved from next block */
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pmulhw 8*5(%esi), %mm1 /* V5 */
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movq %mm6, 8*4(%esi) /* tm4; free mm6 */
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movq %mm0, 8*10(%esi) /* tm10; free mm0 */
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/* column 1: even part
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* use V5, V13, V1, V9 to produce V56..V59
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*/
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/* moved to prev block:
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* movq 8*5(%ecx), %mm1
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* pmulhw 8*5(%esi), %mm1 V5
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*/
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movq 8*13(%ecx), %mm7
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psllw $1, %mm1 /* t128=t130 */
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pmulhw 8*13(%esi), %mm7 /* V13 */
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movq %mm1, %mm2 /* duplicate t128=t130 */
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movq 8(%ecx), %mm3
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pmulhw 8(%esi), %mm3 /* V1 */
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movq 8*9(%ecx), %mm5
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psubsw %mm7, %mm1 /* V50 */
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pmulhw 8*9(%esi), %mm5 /* V9 */
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paddsw %mm7, %mm2 /* V51 */
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pmulhw x5a825a825a825a82, %mm1 /* 23170 ->V52 */
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movq %mm2, %mm6 /* duplicate V51 */
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psraw $1, %mm2 /* t138=t144 */
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movq %mm3, %mm4 /* duplicate V1 */
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psraw $2, %mm6 /* t136 */
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paddsw %mm5, %mm3 /* V53 */
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psubsw %mm5, %mm4 /* V54 ;mm5 free */
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movq %mm3, %mm7 /* duplicate V53 */
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/* moved from next block */
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movq 8*11(%ecx), %mm0
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psraw $1, %mm4 /* t140=t142 */
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psubsw %mm6, %mm1 /* V55 ; mm6 free */
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paddsw %mm2, %mm3 /* V56 */
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movq %mm4, %mm5 /* duplicate t140=t142 */
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paddsw %mm1, %mm4 /* V57 */
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movq %mm3, 8*5(%esi) /* V56 */
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psubsw %mm1, %mm5 /* V58; mm1 free */
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movq %mm4, 8*13(%esi) /* V57 */
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psubsw %mm2, %mm7 /* V59; mm2 free */
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movq %mm5, 8*9(%esi) /* V58 */
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/* keep mm7 alive all along the next block
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* movq %mm7, 8(%esi) V59
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* moved above
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* movq 8*11(%ecx), %mm0
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*/
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pmulhw 8*11(%esi), %mm0 /* V11 */
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movq 8*7(%ecx), %mm6
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pmulhw 8*7(%esi), %mm6 /* V7 */
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movq 8*15(%ecx), %mm4
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movq %mm0, %mm3 /* duplicate V11 */
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pmulhw 8*15(%esi), %mm4 /* V15 */
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movq 8*3(%ecx), %mm5
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psllw $1, %mm6 /* t146=t152 */
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pmulhw 8*3(%esi), %mm5 /* V3 */
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paddsw %mm6, %mm0 /* V63 */
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/* note that V15 computation has a correction step:
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* this is a 'magic' constant that rebiases the results to be closer to the
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* expected result. this magic constant can be refined to reduce the error
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* even more by doing the correction step in a later stage when the number
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* is actually multiplied by 16
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*/
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paddw x0005000200010001, %mm4
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psubsw %mm6, %mm3 /* V60 ; free mm6 */
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psraw $1, %mm0 /* t154=t156 */
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movq %mm3, %mm1 /* duplicate V60 */
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pmulhw x539f539f539f539f, %mm1 /* V67 */
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movq %mm5, %mm6 /* duplicate V3 */
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psraw $2, %mm4 /* t148=t150 */
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paddsw %mm4, %mm5 /* V61 */
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psubsw %mm4, %mm6 /* V62 ; free mm4 */
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movq %mm5, %mm4 /* duplicate V61 */
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psllw $1, %mm1 /* t169 */
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paddsw %mm0, %mm5 /* V65 -> result */
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psubsw %mm0, %mm4 /* V64 ; free mm0 */
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pmulhw x5a825a825a825a82, %mm4 /* V68 */
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psraw $1, %mm3 /* t158 */
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psubsw %mm6, %mm3 /* V66 */
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movq %mm5, %mm2 /* duplicate V65 */
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pmulhw x61f861f861f861f8, %mm3 /* V70 */
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psllw $1, %mm6 /* t165 */
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pmulhw x4546454645464546, %mm6 /* V69 */
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psraw $1, %mm2 /* t172 */
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/* moved from next block */
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movq 8*5(%esi), %mm0 /* V56 */
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psllw $1, %mm4 /* t174 */
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/* moved from next block */
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psraw $1, %mm0 /* t177=t188 */
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nop
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psubsw %mm3, %mm6 /* V72 */
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psubsw %mm1, %mm3 /* V71 ; free mm1 */
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psubsw %mm2, %mm6 /* V73 ; free mm2 */
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/* moved from next block */
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psraw $1, %mm5 /* t178=t189 */
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psubsw %mm6, %mm4 /* V74 */
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/* moved from next block */
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movq %mm0, %mm1 /* duplicate t177=t188 */
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paddsw %mm4, %mm3 /* V75 */
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/* moved from next block */
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paddsw %mm5, %mm0 /* tm1 */
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/* location
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* 5 - V56
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* 13 - V57
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* 9 - V58
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* X - V59, mm7
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* X - V65, mm5
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* X - V73, mm6
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* X - V74, mm4
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* X - V75, mm3
|
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* free mm0, mm1 & mm2
|
|
* moved above
|
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* movq 8*5(%esi), %mm0 V56
|
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* psllw $1, %mm0 t177=t188 ! new !!
|
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* psllw $1, %mm5 t178=t189 ! new !!
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* movq %mm0, %mm1 duplicate t177=t188
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* paddsw %mm5, %mm0 tm1
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*/
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movq 8*13(%esi), %mm2 /* V57 */
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psubsw %mm5, %mm1 /* tm15; free mm5 */
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movq %mm0, 8(%esi) /* tm1; free mm0 */
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psraw $1, %mm7 /* t182=t184 ! new !! */
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/* save the store as used directly in the transpose
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* movq %mm1, 120(%esi) tm15; free mm1
|
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*/
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movq %mm7, %mm5 /* duplicate t182=t184 */
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psubsw %mm3, %mm7 /* tm7 */
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paddsw %mm3, %mm5 /* tm9; free mm3 */
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movq 8*9(%esi), %mm0 /* V58 */
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movq %mm2, %mm3 /* duplicate V57 */
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movq %mm7, 8*7(%esi) /* tm7; free mm7 */
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psubsw %mm6, %mm3 /* tm13 */
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paddsw %mm6, %mm2 /* tm3 ; free mm6 */
|
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/* moved up from the transpose */
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movq %mm3, %mm7
|
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/* moved up from the transpose */
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punpcklwd %mm1, %mm3
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movq %mm0, %mm6 /* duplicate V58 */
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movq %mm2, 8*3(%esi) /* tm3; free mm2 */
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paddsw %mm4, %mm0 /* tm5 */
|
|
psubsw %mm4, %mm6 /* tm11; free mm4 */
|
|
/* moved up from the transpose */
|
|
punpckhwd %mm1, %mm7
|
|
movq %mm0, 8*5(%esi) /* tm5; free mm0 */
|
|
/* moved up from the transpose */
|
|
movq %mm5, %mm2
|
|
/* transpose - M4 part
|
|
* --------- ---------
|
|
* | M1 | M2 | | M1'| M3'|
|
|
* --------- --> ---------
|
|
* | M3 | M4 | | M2'| M4'|
|
|
* --------- ---------
|
|
* Two alternatives: use full mmword approach so the following code can be
|
|
* scheduled before the transpose is done without stores, or use the faster
|
|
* half mmword stores (when possible)
|
|
*/
|
|
movd %mm3, 8*9+4(%esi) /* MS part of tmt9 */
|
|
punpcklwd %mm6, %mm5
|
|
movd %mm7, 8*13+4(%esi) /* MS part of tmt13 */
|
|
punpckhwd %mm6, %mm2
|
|
movd %mm5, 8*9(%esi) /* LS part of tmt9 */
|
|
punpckhdq %mm3, %mm5 /* free mm3 */
|
|
movd %mm2, 8*13(%esi) /* LS part of tmt13 */
|
|
punpckhdq %mm7, %mm2 /* free mm7 */
|
|
/* moved up from the M3 transpose */
|
|
movq 8*8(%esi), %mm0
|
|
/* moved up from the M3 transpose */
|
|
movq 8*10(%esi), %mm1
|
|
/* moved up from the M3 transpose */
|
|
movq %mm0, %mm3
|
|
/* shuffle the rest of the data, and write it with 2 mmword writes */
|
|
movq %mm5, 8*11(%esi) /* tmt11 */
|
|
/* moved up from the M3 transpose */
|
|
punpcklwd %mm1, %mm0
|
|
movq %mm2, 8*15(%esi) /* tmt15 */
|
|
/* moved up from the M3 transpose */
|
|
punpckhwd %mm1, %mm3
|
|
/* transpose - M3 part
|
|
* moved up to previous code section
|
|
* movq 8*8(%esi), %mm0
|
|
* movq 8*10(%esi), %mm1
|
|
* movq %mm0, %mm3
|
|
* punpcklwd %mm1, %mm0
|
|
* punpckhwd %mm1, %mm3
|
|
*/
|
|
movq 8*12(%esi), %mm6
|
|
movq 8*14(%esi), %mm4
|
|
movq %mm6, %mm2
|
|
/* shuffle the data and write the lower parts of the transposed in 4 dwords */
|
|
punpcklwd %mm4, %mm6
|
|
movq %mm0, %mm1
|
|
punpckhdq %mm6, %mm1
|
|
movq %mm3, %mm7
|
|
punpckhwd %mm4, %mm2 /* free mm4 */
|
|
punpckldq %mm6, %mm0 /* free mm6 */
|
|
/* moved from next block */
|
|
movq 8*13(%esi), %mm4 /* tmt13 */
|
|
punpckldq %mm2, %mm3
|
|
punpckhdq %mm2, %mm7 /* free mm2 */
|
|
/* moved from next block */
|
|
movq %mm3, %mm5 /* duplicate tmt5 */
|
|
/* column 1: even part (after transpose)
|
|
* moved above
|
|
* movq %mm3, %mm5 duplicate tmt5
|
|
* movq 8*13(%esi), %mm4 tmt13
|
|
*/
|
|
psubsw %mm4, %mm3 /* V134 */
|
|
pmulhw x5a825a825a825a82, %mm3 /* 23170 ->V136 */
|
|
movq 8*9(%esi), %mm6 /* tmt9 */
|
|
paddsw %mm4, %mm5 /* V135 ; mm4 free */
|
|
movq %mm0, %mm4 /* duplicate tmt1 */
|
|
paddsw %mm6, %mm0 /* V137 */
|
|
psubsw %mm6, %mm4 /* V138 ; mm6 free */
|
|
psllw $2, %mm3 /* t290 */
|
|
psubsw %mm5, %mm3 /* V139 */
|
|
movq %mm0, %mm6 /* duplicate V137 */
|
|
paddsw %mm5, %mm0 /* V140 */
|
|
movq %mm4, %mm2 /* duplicate V138 */
|
|
paddsw %mm3, %mm2 /* V141 */
|
|
psubsw %mm3, %mm4 /* V142 ; mm3 free */
|
|
movq %mm0, 8*9(%esi) /* V140 */
|
|
psubsw %mm5, %mm6 /* V143 ; mm5 free */
|
|
/* moved from next block */
|
|
movq 8*11(%esi), %mm0 /* tmt11 */
|
|
movq %mm2, 8*13(%esi) /* V141 */
|
|
/* moved from next block */
|
|
movq %mm0, %mm2 /* duplicate tmt11 */
|
|
/* column 1: odd part (after transpose) */
|
|
/* moved up to the prev block
|
|
* movq 8*11(%esi), %mm0 tmt11
|
|
* movq %mm0, %mm2 duplicate tmt11
|
|
*/
|
|
movq 8*15(%esi), %mm5 /* tmt15 */
|
|
psubsw %mm7, %mm0 /* V144 */
|
|
movq %mm0, %mm3 /* duplicate V144 */
|
|
paddsw %mm7, %mm2 /* V147 ; free mm7 */
|
|
pmulhw x539f539f539f539f, %mm0 /* 21407-> V151 */
|
|
movq %mm1, %mm7 /* duplicate tmt3 */
|
|
paddsw %mm5, %mm7 /* V145 */
|
|
psubsw %mm5, %mm1 /* V146 ; free mm5 */
|
|
psubsw %mm1, %mm3 /* V150 */
|
|
movq %mm7, %mm5 /* duplicate V145 */
|
|
pmulhw x4546454645464546, %mm1 /* 17734-> V153 */
|
|
psubsw %mm2, %mm5 /* V148 */
|
|
pmulhw x61f861f861f861f8, %mm3 /* 25080-> V154 */
|
|
psllw $2, %mm0 /* t311 */
|
|
pmulhw x5a825a825a825a82, %mm5 /* 23170-> V152 */
|
|
paddsw %mm2, %mm7 /* V149 ; free mm2 */
|
|
psllw $1, %mm1 /* t313 */
|
|
nop /* without the nop - freeze here for one clock */
|
|
movq %mm3, %mm2 /* duplicate V154 */
|
|
psubsw %mm0, %mm3 /* V155 ; free mm0 */
|
|
psubsw %mm2, %mm1 /* V156 ; free mm2 */
|
|
/* moved from the next block */
|
|
movq %mm6, %mm2 /* duplicate V143 */
|
|
/* moved from the next block */
|
|
movq 8*13(%esi), %mm0 /* V141 */
|
|
psllw $1, %mm1 /* t315 */
|
|
psubsw %mm7, %mm1 /* V157 (keep V149) */
|
|
psllw $2, %mm5 /* t317 */
|
|
psubsw %mm1, %mm5 /* V158 */
|
|
psllw $1, %mm3 /* t319 */
|
|
paddsw %mm5, %mm3 /* V159 */
|
|
/* column 1: output butterfly (after transform)
|
|
* moved to the prev block
|
|
* movq %mm6, %mm2 duplicate V143
|
|
* movq 8*13(%esi), %mm0 V141
|
|
*/
|
|
psubsw %mm3, %mm2 /* V163 */
|
|
paddsw %mm3, %mm6 /* V164 ; free mm3 */
|
|
movq %mm4, %mm3 /* duplicate V142 */
|
|
psubsw %mm5, %mm4 /* V165 ; free mm5 */
|
|
movq %mm2, scratch7 /* out7 */
|
|
psraw $4, %mm6
|
|
psraw $4, %mm4
|
|
paddsw %mm5, %mm3 /* V162 */
|
|
movq 8*9(%esi), %mm2 /* V140 */
|
|
movq %mm0, %mm5 /* duplicate V141 */
|
|
/* in order not to perculate this line up,
|
|
* we read 72(%esi) very near to this location
|
|
*/
|
|
movq %mm6, 8*9(%esi) /* out9 */
|
|
paddsw %mm1, %mm0 /* V161 */
|
|
movq %mm3, scratch5 /* out5 */
|
|
psubsw %mm1, %mm5 /* V166 ; free mm1 */
|
|
movq %mm4, 8*11(%esi) /* out11 */
|
|
psraw $4, %mm5
|
|
movq %mm0, scratch3 /* out3 */
|
|
movq %mm2, %mm4 /* duplicate V140 */
|
|
movq %mm5, 8*13(%esi) /* out13 */
|
|
paddsw %mm7, %mm2 /* V160 */
|
|
/* moved from the next block */
|
|
movq 8(%esi), %mm0
|
|
psubsw %mm7, %mm4 /* V167 ; free mm7 */
|
|
/* moved from the next block */
|
|
movq 8*3(%esi), %mm7
|
|
psraw $4, %mm4
|
|
movq %mm2, scratch1 /* out1 */
|
|
/* moved from the next block */
|
|
movq %mm0, %mm1
|
|
movq %mm4, 8*15(%esi) /* out15 */
|
|
/* moved from the next block */
|
|
punpcklwd %mm7, %mm0
|
|
/* transpose - M2 parts
|
|
* moved up to the prev block
|
|
* movq 8(%esi), %mm0
|
|
* movq 8*3(%esi), %mm7
|
|
* movq %mm0, %mm1
|
|
* punpcklwd %mm7, %mm0
|
|
*/
|
|
movq 8*5(%esi), %mm5
|
|
punpckhwd %mm7, %mm1
|
|
movq 8*7(%esi), %mm4
|
|
movq %mm5, %mm3
|
|
/* shuffle the data and write the lower parts of the trasposed in 4 dwords */
|
|
movd %mm0, 8*8(%esi) /* LS part of tmt8 */
|
|
punpcklwd %mm4, %mm5
|
|
movd %mm1, 8*12(%esi) /* LS part of tmt12 */
|
|
punpckhwd %mm4, %mm3
|
|
movd %mm5, 8*8+4(%esi) /* MS part of tmt8 */
|
|
punpckhdq %mm5, %mm0 /* tmt10 */
|
|
movd %mm3, 8*12+4(%esi) /* MS part of tmt12 */
|
|
punpckhdq %mm3, %mm1 /* tmt14 */
|
|
/* transpose - M1 parts */
|
|
movq (%esi), %mm7
|
|
movq 8*2(%esi), %mm2
|
|
movq %mm7, %mm6
|
|
movq 8*4(%esi), %mm5
|
|
punpcklwd %mm2, %mm7
|
|
movq 8*6(%esi), %mm4
|
|
punpckhwd %mm2, %mm6 /* free mm2 */
|
|
movq %mm5, %mm3
|
|
punpcklwd %mm4, %mm5
|
|
punpckhwd %mm4, %mm3 /* free mm4 */
|
|
movq %mm7, %mm2
|
|
movq %mm6, %mm4
|
|
punpckldq %mm5, %mm7 /* tmt0 */
|
|
punpckhdq %mm5, %mm2 /* tmt2 ; free mm5 */
|
|
/* shuffle the rest of the data, and write it with 2 mmword writes */
|
|
punpckldq %mm3, %mm6 /* tmt4 */
|
|
/* moved from next block */
|
|
movq %mm2, %mm5 /* duplicate tmt2 */
|
|
punpckhdq %mm3, %mm4 /* tmt6 ; free mm3 */
|
|
/* moved from next block */
|
|
movq %mm0, %mm3 /* duplicate tmt10 */
|
|
/* column 0: odd part (after transpose)
|
|
*moved up to prev block
|
|
* movq %mm0, %mm3 duplicate tmt10
|
|
* movq %mm2, %mm5 duplicate tmt2
|
|
*/
|
|
psubsw %mm4, %mm0 /* V110 */
|
|
paddsw %mm4, %mm3 /* V113 ; free mm4 */
|
|
movq %mm0, %mm4 /* duplicate V110 */
|
|
paddsw %mm1, %mm2 /* V111 */
|
|
pmulhw x539f539f539f539f, %mm0 /* 21407-> V117 */
|
|
psubsw %mm1, %mm5 /* V112 ; free mm1 */
|
|
psubsw %mm5, %mm4 /* V116 */
|
|
movq %mm2, %mm1 /* duplicate V111 */
|
|
pmulhw x4546454645464546, %mm5 /* 17734-> V119 */
|
|
psubsw %mm3, %mm2 /* V114 */
|
|
pmulhw x61f861f861f861f8, %mm4 /* 25080-> V120 */
|
|
paddsw %mm3, %mm1 /* V115 ; free mm3 */
|
|
pmulhw x5a825a825a825a82, %mm2 /* 23170-> V118 */
|
|
psllw $2, %mm0 /* t266 */
|
|
movq %mm1, (%esi) /* save V115 */
|
|
psllw $1, %mm5 /* t268 */
|
|
psubsw %mm4, %mm5 /* V122 */
|
|
psubsw %mm0, %mm4 /* V121 ; free mm0 */
|
|
psllw $1, %mm5 /* t270 */
|
|
psubsw %mm1, %mm5 /* V123 ; free mm1 */
|
|
psllw $2, %mm2 /* t272 */
|
|
psubsw %mm5, %mm2 /* V124 (keep V123) */
|
|
psllw $1, %mm4 /* t274 */
|
|
movq %mm5, 8*2(%esi) /* save V123 ; free mm5 */
|
|
paddsw %mm2, %mm4 /* V125 (keep V124) */
|
|
/* column 0: even part (after transpose) */
|
|
movq 8*12(%esi), %mm0 /* tmt12 */
|
|
movq %mm6, %mm3 /* duplicate tmt4 */
|
|
psubsw %mm0, %mm6 /* V100 */
|
|
paddsw %mm0, %mm3 /* V101 ; free mm0 */
|
|
pmulhw x5a825a825a825a82, %mm6 /* 23170 ->V102 */
|
|
movq %mm7, %mm5 /* duplicate tmt0 */
|
|
movq 8*8(%esi), %mm1 /* tmt8 */
|
|
paddsw %mm1, %mm7 /* V103 */
|
|
psubsw %mm1, %mm5 /* V104 ; free mm1 */
|
|
movq %mm7, %mm0 /* duplicate V103 */
|
|
psllw $2, %mm6 /* t245 */
|
|
paddsw %mm3, %mm7 /* V106 */
|
|
movq %mm5, %mm1 /* duplicate V104 */
|
|
psubsw %mm3, %mm6 /* V105 */
|
|
psubsw %mm3, %mm0 /* V109; free mm3 */
|
|
paddsw %mm6, %mm5 /* V107 */
|
|
psubsw %mm6, %mm1 /* V108 ; free mm6 */
|
|
/* column 0: output butterfly (after transform) */
|
|
movq %mm1, %mm3 /* duplicate V108 */
|
|
paddsw %mm2, %mm1 /* out4 */
|
|
psraw $4, %mm1
|
|
psubsw %mm2, %mm3 /* out10 ; free mm2 */
|
|
psraw $4, %mm3
|
|
movq %mm0, %mm6 /* duplicate V109 */
|
|
movq %mm1, 8*4(%esi) /* out4 ; free mm1 */
|
|
psubsw %mm4, %mm0 /* out6 */
|
|
movq %mm3, 8*10(%esi) /* out10 ; free mm3 */
|
|
psraw $4, %mm0
|
|
paddsw %mm4, %mm6 /* out8 ; free mm4 */
|
|
movq %mm7, %mm1 /* duplicate V106 */
|
|
movq %mm0, 8*6(%esi) /* out6 ; free mm0 */
|
|
psraw $4, %mm6
|
|
movq (%esi), %mm4 /* V115 */
|
|
movq %mm6, 8*8(%esi) /* out8 ; free mm6 */
|
|
movq %mm5, %mm2 /* duplicate V107 */
|
|
movq 8*2(%esi), %mm3 /* V123 */
|
|
paddsw %mm4, %mm7 /* out0 */
|
|
/* moved up from next block */
|
|
movq scratch3, %mm0
|
|
psraw $4, %mm7
|
|
/* moved up from next block */
|
|
movq scratch5, %mm6
|
|
psubsw %mm4, %mm1 /* out14 ; free mm4 */
|
|
paddsw %mm3, %mm5 /* out2 */
|
|
psraw $4, %mm1
|
|
movq %mm7, (%esi) /* out0 ; free mm7 */
|
|
psraw $4, %mm5
|
|
movq %mm1, 8*14(%esi) /* out14 ; free mm1 */
|
|
psubsw %mm3, %mm2 /* out12 ; free mm3 */
|
|
movq %mm5, 8*2(%esi) /* out2 ; free mm5 */
|
|
psraw $4, %mm2
|
|
/* moved up to the prev block */
|
|
movq scratch7, %mm4
|
|
/* moved up to the prev block */
|
|
psraw $4, %mm0
|
|
movq %mm2, 8*12(%esi) /* out12 ; free mm2 */
|
|
/* moved up to the prev block */
|
|
psraw $4, %mm6
|
|
/* move back the data to its correct place
|
|
* moved up to the prev block
|
|
* movq scratch3, %mm0
|
|
* movq scratch5, %mm6
|
|
* movq scratch7, %mm4
|
|
* psraw $4, %mm0
|
|
* psraw $4, %mm6
|
|
*/
|
|
movq scratch1, %mm1
|
|
psraw $4, %mm4
|
|
movq %mm0, 8*3(%esi) /* out3 */
|
|
psraw $4, %mm1
|
|
movq %mm6, 8*5(%esi) /* out5 */
|
|
movq %mm4, 8*7(%esi) /* out7 */
|
|
movq %mm1, 8(%esi) /* out1 */
|
|
popl %edi
|
|
popl %esi
|
|
popl %edx
|
|
popl %ecx
|
|
popl %ebx
|
|
movl %ebp,%esp
|
|
popl %ebp
|
|
ret
|
|
.Lfe1:
|
|
.size IDCT_mmx,.Lfe1-IDCT_mmx
|
|
.section .note.GNU-stack,"",%progbits
|
|
|
|
|
|
#endif
|
|
|