kc3-lang/libjpeg-turbo/simd/jidctflt-sse.asm
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Hash : 123f7258
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Date : 2016-05-24T10:23:56
Format copyright headers more consistently The IJG convention is to format copyright notices as: Copyright (C) YYYY, Owner. We try to maintain this convention for any code that is part of the libjpeg API library (with the exception of preserving the copyright notices from Cendio's code verbatim, since those predate libjpeg-turbo.) Note that the phrase "All Rights Reserved" is no longer necessary, since all Buenos Aires Convention signatories signed onto the Berne Convention in 2000. However, our convention is to retain this phrase for any files that have a self-contained copyright header but to leave it off of any files that refer to another file for conditions of distribution and use. For instance, all of the non-SIMD files in the libjpeg API library refer to README.ijg, and the copyright message in that file contains "All Rights Reserved", so it is unnecessary to add it to the individual files. The TurboJPEG code retains my preferred formatting convention for copyright notices, which is based on that of VirtualGL (where the TurboJPEG API originated.)
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simd/jidctflt-sse.asm
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; ; jidctflt.asm - floating-point IDCT (SSE & MMX) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; ; Based on the x86 SIMD extension for IJG JPEG library ; Copyright (C) 1999-2006, MIYASAKA Masaru. ; For conditions of distribution and use, see copyright notice in jsimdext.inc ; ; This file should be assembled with NASM (Netwide Assembler), ; can *not* be assembled with Microsoft's MASM or any compatible ; assembler (including Borland's Turbo Assembler). ; NASM is available from http://nasm.sourceforge.net/ or ; http://sourceforge.net/project/showfiles.php?group_id=6208 ; ; This file contains a floating-point implementation of the inverse DCT ; (Discrete Cosine Transform). The following code is based directly on ; the IJG's original jidctflt.c; see the jidctflt.c for more details. ; ; [TAB8] %include "jsimdext.inc" %include "jdct.inc" ; -------------------------------------------------------------------------- %macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5) shufps %1,%2,0x44 %endmacro %macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7) shufps %1,%2,0xEE %endmacro ; -------------------------------------------------------------------------- SECTION SEG_CONST alignz 16 global EXTN(jconst_idct_float_sse) EXTN(jconst_idct_float_sse): PD_1_414 times 4 dd 1.414213562373095048801689 PD_1_847 times 4 dd 1.847759065022573512256366 PD_1_082 times 4 dd 1.082392200292393968799446 PD_M2_613 times 4 dd -2.613125929752753055713286 PD_0_125 times 4 dd 0.125 ; 1/8 PB_CENTERJSAMP times 8 db CENTERJSAMPLE alignz 16 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; ; Perform dequantization and inverse DCT on one block of coefficients. ; ; GLOBAL(void) ; jsimd_idct_float_sse (void *dct_table, JCOEFPTR coef_block, ; JSAMPARRAY output_buf, JDIMENSION output_col) ; %define dct_table(b) (b)+8 ; void *dct_table %define coef_block(b) (b)+12 ; JCOEFPTR coef_block %define output_buf(b) (b)+16 ; JSAMPARRAY output_buf %define output_col(b) (b)+20 ; JDIMENSION output_col %define original_ebp ebp+0 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] %define WK_NUM 2 %define workspace wk(0)-DCTSIZE2*SIZEOF_FAST_FLOAT ; FAST_FLOAT workspace[DCTSIZE2] align 16 global EXTN(jsimd_idct_float_sse) EXTN(jsimd_idct_float_sse): push ebp mov eax,esp ; eax = original ebp sub esp, byte 4 and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits mov [esp],eax mov ebp,esp ; ebp = aligned ebp lea esp, [workspace] push ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi get_GOT ebx ; get GOT address ; ---- Pass 1: process columns from input, store into work array. ; mov eax, [original_ebp] mov edx, POINTER [dct_table(eax)] ; quantptr mov esi, JCOEFPTR [coef_block(eax)] ; inptr lea edi, [workspace] ; FAST_FLOAT *wsptr mov ecx, DCTSIZE/4 ; ctr alignx 16,7 .columnloop: %ifndef NO_ZERO_COLUMN_TEST_FLOAT_SSE mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] jnz near .columnDCT movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] por mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] por mm1, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] por mm0, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] por mm1, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] por mm0, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] por mm1,mm0 packsswb mm1,mm1 movd eax,mm1 test eax,eax jnz short .columnDCT ; -- AC terms all zero movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] punpckhwd mm1,mm0 ; mm1=(** 02 ** 03) punpcklwd mm0,mm0 ; mm0=(00 00 01 01) psrad mm1,(DWORD_BIT-WORD_BIT) ; mm1=in0H=(02 03) psrad mm0,(DWORD_BIT-WORD_BIT) ; mm0=in0L=(00 01) cvtpi2ps xmm3,mm1 ; xmm3=(02 03 ** **) cvtpi2ps xmm0,mm0 ; xmm0=(00 01 ** **) movlhps xmm0,xmm3 ; xmm0=in0=(00 01 02 03) mulps xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] movaps xmm1,xmm0 movaps xmm2,xmm0 movaps xmm3,xmm0 shufps xmm0,xmm0,0x00 ; xmm0=(00 00 00 00) shufps xmm1,xmm1,0x55 ; xmm1=(01 01 01 01) shufps xmm2,xmm2,0xAA ; xmm2=(02 02 02 02) shufps xmm3,xmm3,0xFF ; xmm3=(03 03 03 03) movaps XMMWORD [XMMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], xmm0 movaps XMMWORD [XMMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], xmm0 movaps XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], xmm1 movaps XMMWORD [XMMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], xmm1 movaps XMMWORD [XMMBLOCK(2,0,edi,SIZEOF_FAST_FLOAT)], xmm2 movaps XMMWORD [XMMBLOCK(2,1,edi,SIZEOF_FAST_FLOAT)], xmm2 movaps XMMWORD [XMMBLOCK(3,0,edi,SIZEOF_FAST_FLOAT)], xmm3 movaps XMMWORD [XMMBLOCK(3,1,edi,SIZEOF_FAST_FLOAT)], xmm3 jmp near .nextcolumn alignx 16,7 %endif .columnDCT: ; -- Even part movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)] movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)] movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)] movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)] punpckhwd mm4,mm0 ; mm4=(** 02 ** 03) punpcklwd mm0,mm0 ; mm0=(00 00 01 01) punpckhwd mm5,mm1 ; mm5=(** 22 ** 23) punpcklwd mm1,mm1 ; mm1=(20 20 21 21) psrad mm4,(DWORD_BIT-WORD_BIT) ; mm4=in0H=(02 03) psrad mm0,(DWORD_BIT-WORD_BIT) ; mm0=in0L=(00 01) cvtpi2ps xmm4,mm4 ; xmm4=(02 03 ** **) cvtpi2ps xmm0,mm0 ; xmm0=(00 01 ** **) psrad mm5,(DWORD_BIT-WORD_BIT) ; mm5=in2H=(22 23) psrad mm1,(DWORD_BIT-WORD_BIT) ; mm1=in2L=(20 21) cvtpi2ps xmm5,mm5 ; xmm5=(22 23 ** **) cvtpi2ps xmm1,mm1 ; xmm1=(20 21 ** **) punpckhwd mm6,mm2 ; mm6=(** 42 ** 43) punpcklwd mm2,mm2 ; mm2=(40 40 41 41) punpckhwd mm7,mm3 ; mm7=(** 62 ** 63) punpcklwd mm3,mm3 ; mm3=(60 60 61 61) psrad mm6,(DWORD_BIT-WORD_BIT) ; mm6=in4H=(42 43) psrad mm2,(DWORD_BIT-WORD_BIT) ; mm2=in4L=(40 41) cvtpi2ps xmm6,mm6 ; xmm6=(42 43 ** **) cvtpi2ps xmm2,mm2 ; xmm2=(40 41 ** **) psrad mm7,(DWORD_BIT-WORD_BIT) ; mm7=in6H=(62 63) psrad mm3,(DWORD_BIT-WORD_BIT) ; mm3=in6L=(60 61) cvtpi2ps xmm7,mm7 ; xmm7=(62 63 ** **) cvtpi2ps xmm3,mm3 ; xmm3=(60 61 ** **) movlhps xmm0,xmm4 ; xmm0=in0=(00 01 02 03) movlhps xmm1,xmm5 ; xmm1=in2=(20 21 22 23) mulps xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FLOAT_MULT_TYPE)] mulps xmm1, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_FLOAT_MULT_TYPE)] movlhps xmm2,xmm6 ; xmm2=in4=(40 41 42 43) movlhps xmm3,xmm7 ; xmm3=in6=(60 61 62 63) mulps xmm2, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_FLOAT_MULT_TYPE)] mulps xmm3, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_FLOAT_MULT_TYPE)] movaps xmm4,xmm0 movaps xmm5,xmm1 subps xmm0,xmm2 ; xmm0=tmp11 subps xmm1,xmm3 addps xmm4,xmm2 ; xmm4=tmp10 addps xmm5,xmm3 ; xmm5=tmp13 mulps xmm1,[GOTOFF(ebx,PD_1_414)] subps xmm1,xmm5 ; xmm1=tmp12 movaps xmm6,xmm4 movaps xmm7,xmm0 subps xmm4,xmm5 ; xmm4=tmp3 subps xmm0,xmm1 ; xmm0=tmp2 addps xmm6,xmm5 ; xmm6=tmp0 addps xmm7,xmm1 ; xmm7=tmp1 movaps XMMWORD [wk(1)], xmm4 ; tmp3 movaps XMMWORD [wk(0)], xmm0 ; tmp2 ; -- Odd part movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)] movq mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)] movq mm5, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)] movq mm1, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)] punpckhwd mm6,mm4 ; mm6=(** 12 ** 13) punpcklwd mm4,mm4 ; mm4=(10 10 11 11) punpckhwd mm2,mm0 ; mm2=(** 32 ** 33) punpcklwd mm0,mm0 ; mm0=(30 30 31 31) psrad mm6,(DWORD_BIT-WORD_BIT) ; mm6=in1H=(12 13) psrad mm4,(DWORD_BIT-WORD_BIT) ; mm4=in1L=(10 11) cvtpi2ps xmm4,mm6 ; xmm4=(12 13 ** **) cvtpi2ps xmm2,mm4 ; xmm2=(10 11 ** **) psrad mm2,(DWORD_BIT-WORD_BIT) ; mm2=in3H=(32 33) psrad mm0,(DWORD_BIT-WORD_BIT) ; mm0=in3L=(30 31) cvtpi2ps xmm0,mm2 ; xmm0=(32 33 ** **) cvtpi2ps xmm3,mm0 ; xmm3=(30 31 ** **) punpckhwd mm7,mm5 ; mm7=(** 52 ** 53) punpcklwd mm5,mm5 ; mm5=(50 50 51 51) punpckhwd mm3,mm1 ; mm3=(** 72 ** 73) punpcklwd mm1,mm1 ; mm1=(70 70 71 71) movlhps xmm2,xmm4 ; xmm2=in1=(10 11 12 13) movlhps xmm3,xmm0 ; xmm3=in3=(30 31 32 33) psrad mm7,(DWORD_BIT-WORD_BIT) ; mm7=in5H=(52 53) psrad mm5,(DWORD_BIT-WORD_BIT) ; mm5=in5L=(50 51) cvtpi2ps xmm4,mm7 ; xmm4=(52 53 ** **) cvtpi2ps xmm5,mm5 ; xmm5=(50 51 ** **) psrad mm3,(DWORD_BIT-WORD_BIT) ; mm3=in7H=(72 73) psrad mm1,(DWORD_BIT-WORD_BIT) ; mm1=in7L=(70 71) cvtpi2ps xmm0,mm3 ; xmm0=(72 73 ** **) cvtpi2ps xmm1,mm1 ; xmm1=(70 71 ** **) mulps xmm2, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FLOAT_MULT_TYPE)] mulps xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_FLOAT_MULT_TYPE)] movlhps xmm5,xmm4 ; xmm5=in5=(50 51 52 53) movlhps xmm1,xmm0 ; xmm1=in7=(70 71 72 73) mulps xmm5, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_FLOAT_MULT_TYPE)] mulps xmm1, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_FLOAT_MULT_TYPE)] movaps xmm4,xmm2 movaps xmm0,xmm5 addps xmm2,xmm1 ; xmm2=z11 addps xmm5,xmm3 ; xmm5=z13 subps xmm4,xmm1 ; xmm4=z12 subps xmm0,xmm3 ; xmm0=z10 movaps xmm1,xmm2 subps xmm2,xmm5 addps xmm1,xmm5 ; xmm1=tmp7 mulps xmm2,[GOTOFF(ebx,PD_1_414)] ; xmm2=tmp11 movaps xmm3,xmm0 addps xmm0,xmm4 mulps xmm0,[GOTOFF(ebx,PD_1_847)] ; xmm0=z5 mulps xmm3,[GOTOFF(ebx,PD_M2_613)] ; xmm3=(z10 * -2.613125930) mulps xmm4,[GOTOFF(ebx,PD_1_082)] ; xmm4=(z12 * 1.082392200) addps xmm3,xmm0 ; xmm3=tmp12 subps xmm4,xmm0 ; xmm4=tmp10 ; -- Final output stage subps xmm3,xmm1 ; xmm3=tmp6 movaps xmm5,xmm6 movaps xmm0,xmm7 addps xmm6,xmm1 ; xmm6=data0=(00 01 02 03) addps xmm7,xmm3 ; xmm7=data1=(10 11 12 13) subps xmm5,xmm1 ; xmm5=data7=(70 71 72 73) subps xmm0,xmm3 ; xmm0=data6=(60 61 62 63) subps xmm2,xmm3 ; xmm2=tmp5 movaps xmm1,xmm6 ; transpose coefficients(phase 1) unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11) unpckhps xmm1,xmm7 ; xmm1=(02 12 03 13) movaps xmm3,xmm0 ; transpose coefficients(phase 1) unpcklps xmm0,xmm5 ; xmm0=(60 70 61 71) unpckhps xmm3,xmm5 ; xmm3=(62 72 63 73) movaps xmm7, XMMWORD [wk(0)] ; xmm7=tmp2 movaps xmm5, XMMWORD [wk(1)] ; xmm5=tmp3 movaps XMMWORD [wk(0)], xmm0 ; wk(0)=(60 70 61 71) movaps XMMWORD [wk(1)], xmm3 ; wk(1)=(62 72 63 73) addps xmm4,xmm2 ; xmm4=tmp4 movaps xmm0,xmm7 movaps xmm3,xmm5 addps xmm7,xmm2 ; xmm7=data2=(20 21 22 23) addps xmm5,xmm4 ; xmm5=data4=(40 41 42 43) subps xmm0,xmm2 ; xmm0=data5=(50 51 52 53) subps xmm3,xmm4 ; xmm3=data3=(30 31 32 33) movaps xmm2,xmm7 ; transpose coefficients(phase 1) unpcklps xmm7,xmm3 ; xmm7=(20 30 21 31) unpckhps xmm2,xmm3 ; xmm2=(22 32 23 33) movaps xmm4,xmm5 ; transpose coefficients(phase 1) unpcklps xmm5,xmm0 ; xmm5=(40 50 41 51) unpckhps xmm4,xmm0 ; xmm4=(42 52 43 53) movaps xmm3,xmm6 ; transpose coefficients(phase 2) unpcklps2 xmm6,xmm7 ; xmm6=(00 10 20 30) unpckhps2 xmm3,xmm7 ; xmm3=(01 11 21 31) movaps xmm0,xmm1 ; transpose coefficients(phase 2) unpcklps2 xmm1,xmm2 ; xmm1=(02 12 22 32) unpckhps2 xmm0,xmm2 ; xmm0=(03 13 23 33) movaps xmm7, XMMWORD [wk(0)] ; xmm7=(60 70 61 71) movaps xmm2, XMMWORD [wk(1)] ; xmm2=(62 72 63 73) movaps XMMWORD [XMMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], xmm6 movaps XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], xmm3 movaps XMMWORD [XMMBLOCK(2,0,edi,SIZEOF_FAST_FLOAT)], xmm1 movaps XMMWORD [XMMBLOCK(3,0,edi,SIZEOF_FAST_FLOAT)], xmm0 movaps xmm6,xmm5 ; transpose coefficients(phase 2) unpcklps2 xmm5,xmm7 ; xmm5=(40 50 60 70) unpckhps2 xmm6,xmm7 ; xmm6=(41 51 61 71) movaps xmm3,xmm4 ; transpose coefficients(phase 2) unpcklps2 xmm4,xmm2 ; xmm4=(42 52 62 72) unpckhps2 xmm3,xmm2 ; xmm3=(43 53 63 73) movaps XMMWORD [XMMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], xmm5 movaps XMMWORD [XMMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], xmm6 movaps XMMWORD [XMMBLOCK(2,1,edi,SIZEOF_FAST_FLOAT)], xmm4 movaps XMMWORD [XMMBLOCK(3,1,edi,SIZEOF_FAST_FLOAT)], xmm3 .nextcolumn: add esi, byte 4*SIZEOF_JCOEF ; coef_block add edx, byte 4*SIZEOF_FLOAT_MULT_TYPE ; quantptr add edi, 4*DCTSIZE*SIZEOF_FAST_FLOAT ; wsptr dec ecx ; ctr jnz near .columnloop ; -- Prefetch the next coefficient block prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 0*32] prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 1*32] prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 2*32] prefetchnta [esi + (DCTSIZE2-8)*SIZEOF_JCOEF + 3*32] ; ---- Pass 2: process rows from work array, store into output array. mov eax, [original_ebp] lea esi, [workspace] ; FAST_FLOAT *wsptr mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) mov eax, JDIMENSION [output_col(eax)] mov ecx, DCTSIZE/4 ; ctr alignx 16,7 .rowloop: ; -- Even part movaps xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm2, XMMWORD [XMMBLOCK(4,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm3, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm4,xmm0 movaps xmm5,xmm1 subps xmm0,xmm2 ; xmm0=tmp11 subps xmm1,xmm3 addps xmm4,xmm2 ; xmm4=tmp10 addps xmm5,xmm3 ; xmm5=tmp13 mulps xmm1,[GOTOFF(ebx,PD_1_414)] subps xmm1,xmm5 ; xmm1=tmp12 movaps xmm6,xmm4 movaps xmm7,xmm0 subps xmm4,xmm5 ; xmm4=tmp3 subps xmm0,xmm1 ; xmm0=tmp2 addps xmm6,xmm5 ; xmm6=tmp0 addps xmm7,xmm1 ; xmm7=tmp1 movaps XMMWORD [wk(1)], xmm4 ; tmp3 movaps XMMWORD [wk(0)], xmm0 ; tmp2 ; -- Odd part movaps xmm2, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm3, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm5, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm1, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_FAST_FLOAT)] movaps xmm4,xmm2 movaps xmm0,xmm5 addps xmm2,xmm1 ; xmm2=z11 addps xmm5,xmm3 ; xmm5=z13 subps xmm4,xmm1 ; xmm4=z12 subps xmm0,xmm3 ; xmm0=z10 movaps xmm1,xmm2 subps xmm2,xmm5 addps xmm1,xmm5 ; xmm1=tmp7 mulps xmm2,[GOTOFF(ebx,PD_1_414)] ; xmm2=tmp11 movaps xmm3,xmm0 addps xmm0,xmm4 mulps xmm0,[GOTOFF(ebx,PD_1_847)] ; xmm0=z5 mulps xmm3,[GOTOFF(ebx,PD_M2_613)] ; xmm3=(z10 * -2.613125930) mulps xmm4,[GOTOFF(ebx,PD_1_082)] ; xmm4=(z12 * 1.082392200) addps xmm3,xmm0 ; xmm3=tmp12 subps xmm4,xmm0 ; xmm4=tmp10 ; -- Final output stage subps xmm3,xmm1 ; xmm3=tmp6 movaps xmm5,xmm6 movaps xmm0,xmm7 addps xmm6,xmm1 ; xmm6=data0=(00 10 20 30) addps xmm7,xmm3 ; xmm7=data1=(01 11 21 31) subps xmm5,xmm1 ; xmm5=data7=(07 17 27 37) subps xmm0,xmm3 ; xmm0=data6=(06 16 26 36) subps xmm2,xmm3 ; xmm2=tmp5 movaps xmm1,[GOTOFF(ebx,PD_0_125)] ; xmm1=[PD_0_125] mulps xmm6,xmm1 ; descale(1/8) mulps xmm7,xmm1 ; descale(1/8) mulps xmm5,xmm1 ; descale(1/8) mulps xmm0,xmm1 ; descale(1/8) movhlps xmm3,xmm6 movhlps xmm1,xmm7 cvtps2pi mm0,xmm6 ; round to int32, mm0=data0L=(00 10) cvtps2pi mm1,xmm7 ; round to int32, mm1=data1L=(01 11) cvtps2pi mm2,xmm3 ; round to int32, mm2=data0H=(20 30) cvtps2pi mm3,xmm1 ; round to int32, mm3=data1H=(21 31) packssdw mm0,mm2 ; mm0=data0=(00 10 20 30) packssdw mm1,mm3 ; mm1=data1=(01 11 21 31) movhlps xmm6,xmm5 movhlps xmm7,xmm0 cvtps2pi mm4,xmm5 ; round to int32, mm4=data7L=(07 17) cvtps2pi mm5,xmm0 ; round to int32, mm5=data6L=(06 16) cvtps2pi mm6,xmm6 ; round to int32, mm6=data7H=(27 37) cvtps2pi mm7,xmm7 ; round to int32, mm7=data6H=(26 36) packssdw mm4,mm6 ; mm4=data7=(07 17 27 37) packssdw mm5,mm7 ; mm5=data6=(06 16 26 36) packsswb mm0,mm5 ; mm0=(00 10 20 30 06 16 26 36) packsswb mm1,mm4 ; mm1=(01 11 21 31 07 17 27 37) movaps xmm3, XMMWORD [wk(0)] ; xmm3=tmp2 movaps xmm1, XMMWORD [wk(1)] ; xmm1=tmp3 movaps xmm6,[GOTOFF(ebx,PD_0_125)] ; xmm6=[PD_0_125] addps xmm4,xmm2 ; xmm4=tmp4 movaps xmm5,xmm3 movaps xmm0,xmm1 addps xmm3,xmm2 ; xmm3=data2=(02 12 22 32) addps xmm1,xmm4 ; xmm1=data4=(04 14 24 34) subps xmm5,xmm2 ; xmm5=data5=(05 15 25 35) subps xmm0,xmm4 ; xmm0=data3=(03 13 23 33) mulps xmm3,xmm6 ; descale(1/8) mulps xmm1,xmm6 ; descale(1/8) mulps xmm5,xmm6 ; descale(1/8) mulps xmm0,xmm6 ; descale(1/8) movhlps xmm7,xmm3 movhlps xmm2,xmm1 cvtps2pi mm2,xmm3 ; round to int32, mm2=data2L=(02 12) cvtps2pi mm3,xmm1 ; round to int32, mm3=data4L=(04 14) cvtps2pi mm6,xmm7 ; round to int32, mm6=data2H=(22 32) cvtps2pi mm7,xmm2 ; round to int32, mm7=data4H=(24 34) packssdw mm2,mm6 ; mm2=data2=(02 12 22 32) packssdw mm3,mm7 ; mm3=data4=(04 14 24 34) movhlps xmm4,xmm5 movhlps xmm6,xmm0 cvtps2pi mm5,xmm5 ; round to int32, mm5=data5L=(05 15) cvtps2pi mm4,xmm0 ; round to int32, mm4=data3L=(03 13) cvtps2pi mm6,xmm4 ; round to int32, mm6=data5H=(25 35) cvtps2pi mm7,xmm6 ; round to int32, mm7=data3H=(23 33) packssdw mm5,mm6 ; mm5=data5=(05 15 25 35) packssdw mm4,mm7 ; mm4=data3=(03 13 23 33) movq mm6,[GOTOFF(ebx,PB_CENTERJSAMP)] ; mm6=[PB_CENTERJSAMP] packsswb mm2,mm3 ; mm2=(02 12 22 32 04 14 24 34) packsswb mm4,mm5 ; mm4=(03 13 23 33 05 15 25 35) paddb mm0,mm6 paddb mm1,mm6 paddb mm2,mm6 paddb mm4,mm6 movq mm7,mm0 ; transpose coefficients(phase 1) punpcklbw mm0,mm1 ; mm0=(00 01 10 11 20 21 30 31) punpckhbw mm7,mm1 ; mm7=(06 07 16 17 26 27 36 37) movq mm3,mm2 ; transpose coefficients(phase 1) punpcklbw mm2,mm4 ; mm2=(02 03 12 13 22 23 32 33) punpckhbw mm3,mm4 ; mm3=(04 05 14 15 24 25 34 35) movq mm5,mm0 ; transpose coefficients(phase 2) punpcklwd mm0,mm2 ; mm0=(00 01 02 03 10 11 12 13) punpckhwd mm5,mm2 ; mm5=(20 21 22 23 30 31 32 33) movq mm6,mm3 ; transpose coefficients(phase 2) punpcklwd mm3,mm7 ; mm3=(04 05 06 07 14 15 16 17) punpckhwd mm6,mm7 ; mm6=(24 25 26 27 34 35 36 37) movq mm1,mm0 ; transpose coefficients(phase 3) punpckldq mm0,mm3 ; mm0=(00 01 02 03 04 05 06 07) punpckhdq mm1,mm3 ; mm1=(10 11 12 13 14 15 16 17) movq mm4,mm5 ; transpose coefficients(phase 3) punpckldq mm5,mm6 ; mm5=(20 21 22 23 24 25 26 27) punpckhdq mm4,mm6 ; mm4=(30 31 32 33 34 35 36 37) pushpic ebx ; save GOT address mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] mov ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW] movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm0 movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm1 mov edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW] mov ebx, JSAMPROW [edi+3*SIZEOF_JSAMPROW] movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm5 movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm4 poppic ebx ; restore GOT address add esi, byte 4*SIZEOF_FAST_FLOAT ; wsptr add edi, byte 4*SIZEOF_JSAMPROW dec ecx ; ctr jnz near .rowloop emms ; empty MMX state pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx mov esp,ebp ; esp <- aligned ebp pop esp ; esp <- original ebp pop ebp ret ; For some reason, the OS X linker does not honor the request to align the ; segment unless we do this. align 16