kc3-lang/libjpeg-turbo/simd/jiss2red.asm
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Hash : 132b5fdd
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Date : 2009-10-08T09:04:56
Work around alignment issue with OS X linker which was causing problems on Leopard and Snow Leopard git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@67 632fc199-4ca6-4c93-a231-07263d6284db
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simd/jiss2red.asm
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; ; jiss2red.asm - reduced-size IDCT (SSE2) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; ; Based on ; 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 inverse-DCT routines that produce reduced-size ; output: either 4x4 or 2x2 pixels from an 8x8 DCT block. ; The following code is based directly on the IJG's original jidctred.c; ; see the jidctred.c for more details. ; ; [TAB8] %include "jsimdext.inc" %include "jdct.inc" ; -------------------------------------------------------------------------- %define CONST_BITS 13 %define PASS1_BITS 2 %define DESCALE_P1_4 (CONST_BITS-PASS1_BITS+1) %define DESCALE_P2_4 (CONST_BITS+PASS1_BITS+3+1) %define DESCALE_P1_2 (CONST_BITS-PASS1_BITS+2) %define DESCALE_P2_2 (CONST_BITS+PASS1_BITS+3+2) %if CONST_BITS == 13 F_0_211 equ 1730 ; FIX(0.211164243) F_0_509 equ 4176 ; FIX(0.509795579) F_0_601 equ 4926 ; FIX(0.601344887) F_0_720 equ 5906 ; FIX(0.720959822) F_0_765 equ 6270 ; FIX(0.765366865) F_0_850 equ 6967 ; FIX(0.850430095) F_0_899 equ 7373 ; FIX(0.899976223) F_1_061 equ 8697 ; FIX(1.061594337) F_1_272 equ 10426 ; FIX(1.272758580) F_1_451 equ 11893 ; FIX(1.451774981) F_1_847 equ 15137 ; FIX(1.847759065) F_2_172 equ 17799 ; FIX(2.172734803) F_2_562 equ 20995 ; FIX(2.562915447) F_3_624 equ 29692 ; FIX(3.624509785) %else ; NASM cannot do compile-time arithmetic on floating-point constants. %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) F_0_211 equ DESCALE( 226735879,30-CONST_BITS) ; FIX(0.211164243) F_0_509 equ DESCALE( 547388834,30-CONST_BITS) ; FIX(0.509795579) F_0_601 equ DESCALE( 645689155,30-CONST_BITS) ; FIX(0.601344887) F_0_720 equ DESCALE( 774124714,30-CONST_BITS) ; FIX(0.720959822) F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865) F_0_850 equ DESCALE( 913142361,30-CONST_BITS) ; FIX(0.850430095) F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223) F_1_061 equ DESCALE(1139878239,30-CONST_BITS) ; FIX(1.061594337) F_1_272 equ DESCALE(1366614119,30-CONST_BITS) ; FIX(1.272758580) F_1_451 equ DESCALE(1558831516,30-CONST_BITS) ; FIX(1.451774981) F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) F_2_172 equ DESCALE(2332956230,30-CONST_BITS) ; FIX(2.172734803) F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447) F_3_624 equ DESCALE(3891787747,30-CONST_BITS) ; FIX(3.624509785) %endif ; -------------------------------------------------------------------------- SECTION SEG_CONST alignz 16 global EXTN(jconst_idct_red_sse2) EXTN(jconst_idct_red_sse2): PW_F184_MF076 times 4 dw F_1_847,-F_0_765 PW_F256_F089 times 4 dw F_2_562, F_0_899 PW_F106_MF217 times 4 dw F_1_061,-F_2_172 PW_MF060_MF050 times 4 dw -F_0_601,-F_0_509 PW_F145_MF021 times 4 dw F_1_451,-F_0_211 PW_F362_MF127 times 4 dw F_3_624,-F_1_272 PW_F085_MF072 times 4 dw F_0_850,-F_0_720 PD_DESCALE_P1_4 times 4 dd 1 << (DESCALE_P1_4-1) PD_DESCALE_P2_4 times 4 dd 1 << (DESCALE_P2_4-1) PD_DESCALE_P1_2 times 4 dd 1 << (DESCALE_P1_2-1) PD_DESCALE_P2_2 times 4 dd 1 << (DESCALE_P2_2-1) PB_CENTERJSAMP times 16 db CENTERJSAMPLE alignz 16 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; ; Perform dequantization and inverse DCT on one block of coefficients, ; producing a reduced-size 4x4 output block. ; ; GLOBAL(void) ; jsimd_idct_4x4_sse2 (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 align 16 global EXTN(jsimd_idct_4x4_sse2) EXTN(jsimd_idct_4x4_sse2): 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, [wk(0)] pushpic ebx ; push ecx ; unused ; push edx ; need not be preserved push esi push edi get_GOT ebx ; get GOT address ; ---- Pass 1: process columns from input. ; mov eax, [original_ebp] mov edx, POINTER [dct_table(eax)] ; quantptr mov esi, JCOEFPTR [coef_block(eax)] ; inptr %ifndef NO_ZERO_COLUMN_TEST_4X4_SSE2 mov eax, DWORD [DWBLOCK(1,0,esi,SIZEOF_JCOEF)] or eax, DWORD [DWBLOCK(2,0,esi,SIZEOF_JCOEF)] jnz short .columnDCT movdqa xmm0, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)] movdqa xmm1, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)] por xmm0, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)] por xmm1, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)] por xmm0, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)] por xmm1, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)] por xmm0,xmm1 packsswb xmm0,xmm0 packsswb xmm0,xmm0 movd eax,xmm0 test eax,eax jnz short .columnDCT ; -- AC terms all zero movdqa xmm0, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)] pmullw xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] psllw xmm0,PASS1_BITS movdqa xmm3,xmm0 ; xmm0=in0=(00 01 02 03 04 05 06 07) punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03) punpckhwd xmm3,xmm3 ; xmm3=(04 04 05 05 06 06 07 07) pshufd xmm1,xmm0,0x50 ; xmm1=[col0 col1]=(00 00 00 00 01 01 01 01) pshufd xmm0,xmm0,0xFA ; xmm0=[col2 col3]=(02 02 02 02 03 03 03 03) pshufd xmm6,xmm3,0x50 ; xmm6=[col4 col5]=(04 04 04 04 05 05 05 05) pshufd xmm3,xmm3,0xFA ; xmm3=[col6 col7]=(06 06 06 06 07 07 07 07) jmp near .column_end alignx 16,7 %endif .columnDCT: ; -- Odd part movdqa xmm0, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)] movdqa xmm1, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)] pmullw xmm0, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)] pmullw xmm1, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)] movdqa xmm2, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)] movdqa xmm3, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)] pmullw xmm2, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)] pmullw xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)] movdqa xmm4,xmm0 movdqa xmm5,xmm0 punpcklwd xmm4,xmm1 punpckhwd xmm5,xmm1 movdqa xmm0,xmm4 movdqa xmm1,xmm5 pmaddwd xmm4,[GOTOFF(ebx,PW_F256_F089)] ; xmm4=(tmp2L) pmaddwd xmm5,[GOTOFF(ebx,PW_F256_F089)] ; xmm5=(tmp2H) pmaddwd xmm0,[GOTOFF(ebx,PW_F106_MF217)] ; xmm0=(tmp0L) pmaddwd xmm1,[GOTOFF(ebx,PW_F106_MF217)] ; xmm1=(tmp0H) movdqa xmm6,xmm2 movdqa xmm7,xmm2 punpcklwd xmm6,xmm3 punpckhwd xmm7,xmm3 movdqa xmm2,xmm6 movdqa xmm3,xmm7 pmaddwd xmm6,[GOTOFF(ebx,PW_MF060_MF050)] ; xmm6=(tmp2L) pmaddwd xmm7,[GOTOFF(ebx,PW_MF060_MF050)] ; xmm7=(tmp2H) pmaddwd xmm2,[GOTOFF(ebx,PW_F145_MF021)] ; xmm2=(tmp0L) pmaddwd xmm3,[GOTOFF(ebx,PW_F145_MF021)] ; xmm3=(tmp0H) paddd xmm6,xmm4 ; xmm6=tmp2L paddd xmm7,xmm5 ; xmm7=tmp2H paddd xmm2,xmm0 ; xmm2=tmp0L paddd xmm3,xmm1 ; xmm3=tmp0H movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=tmp0L movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=tmp0H ; -- Even part movdqa xmm4, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)] movdqa xmm5, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_JCOEF)] movdqa xmm0, XMMWORD [XMMBLOCK(6,0,esi,SIZEOF_JCOEF)] pmullw xmm4, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] pmullw xmm5, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)] pmullw xmm0, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)] pxor xmm1,xmm1 pxor xmm2,xmm2 punpcklwd xmm1,xmm4 ; xmm1=tmp0L punpckhwd xmm2,xmm4 ; xmm2=tmp0H psrad xmm1,(16-CONST_BITS-1) ; psrad xmm1,16 & pslld xmm1,CONST_BITS+1 psrad xmm2,(16-CONST_BITS-1) ; psrad xmm2,16 & pslld xmm2,CONST_BITS+1 movdqa xmm3,xmm5 ; xmm5=in2=z2 punpcklwd xmm5,xmm0 ; xmm0=in6=z3 punpckhwd xmm3,xmm0 pmaddwd xmm5,[GOTOFF(ebx,PW_F184_MF076)] ; xmm5=tmp2L pmaddwd xmm3,[GOTOFF(ebx,PW_F184_MF076)] ; xmm3=tmp2H movdqa xmm4,xmm1 movdqa xmm0,xmm2 paddd xmm1,xmm5 ; xmm1=tmp10L paddd xmm2,xmm3 ; xmm2=tmp10H psubd xmm4,xmm5 ; xmm4=tmp12L psubd xmm0,xmm3 ; xmm0=tmp12H ; -- Final output stage movdqa xmm5,xmm1 movdqa xmm3,xmm2 paddd xmm1,xmm6 ; xmm1=data0L paddd xmm2,xmm7 ; xmm2=data0H psubd xmm5,xmm6 ; xmm5=data3L psubd xmm3,xmm7 ; xmm3=data3H movdqa xmm6,[GOTOFF(ebx,PD_DESCALE_P1_4)] ; xmm6=[PD_DESCALE_P1_4] paddd xmm1,xmm6 paddd xmm2,xmm6 psrad xmm1,DESCALE_P1_4 psrad xmm2,DESCALE_P1_4 paddd xmm5,xmm6 paddd xmm3,xmm6 psrad xmm5,DESCALE_P1_4 psrad xmm3,DESCALE_P1_4 packssdw xmm1,xmm2 ; xmm1=data0=(00 01 02 03 04 05 06 07) packssdw xmm5,xmm3 ; xmm5=data3=(30 31 32 33 34 35 36 37) movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp0L movdqa xmm6, XMMWORD [wk(1)] ; xmm6=tmp0H movdqa xmm2,xmm4 movdqa xmm3,xmm0 paddd xmm4,xmm7 ; xmm4=data1L paddd xmm0,xmm6 ; xmm0=data1H psubd xmm2,xmm7 ; xmm2=data2L psubd xmm3,xmm6 ; xmm3=data2H movdqa xmm7,[GOTOFF(ebx,PD_DESCALE_P1_4)] ; xmm7=[PD_DESCALE_P1_4] paddd xmm4,xmm7 paddd xmm0,xmm7 psrad xmm4,DESCALE_P1_4 psrad xmm0,DESCALE_P1_4 paddd xmm2,xmm7 paddd xmm3,xmm7 psrad xmm2,DESCALE_P1_4 psrad xmm3,DESCALE_P1_4 packssdw xmm4,xmm0 ; xmm4=data1=(10 11 12 13 14 15 16 17) packssdw xmm2,xmm3 ; xmm2=data2=(20 21 22 23 24 25 26 27) movdqa xmm6,xmm1 ; transpose coefficients(phase 1) punpcklwd xmm1,xmm4 ; xmm1=(00 10 01 11 02 12 03 13) punpckhwd xmm6,xmm4 ; xmm6=(04 14 05 15 06 16 07 17) movdqa xmm7,xmm2 ; transpose coefficients(phase 1) punpcklwd xmm2,xmm5 ; xmm2=(20 30 21 31 22 32 23 33) punpckhwd xmm7,xmm5 ; xmm7=(24 34 25 35 26 36 27 37) movdqa xmm0,xmm1 ; transpose coefficients(phase 2) punpckldq xmm1,xmm2 ; xmm1=[col0 col1]=(00 10 20 30 01 11 21 31) punpckhdq xmm0,xmm2 ; xmm0=[col2 col3]=(02 12 22 32 03 13 23 33) movdqa xmm3,xmm6 ; transpose coefficients(phase 2) punpckldq xmm6,xmm7 ; xmm6=[col4 col5]=(04 14 24 34 05 15 25 35) punpckhdq xmm3,xmm7 ; xmm3=[col6 col7]=(06 16 26 36 07 17 27 37) .column_end: ; -- Prefetch the next coefficient block prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 0*32] prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 1*32] prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 2*32] prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 3*32] ; ---- Pass 2: process rows, store into output array. mov eax, [original_ebp] mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *) mov eax, JDIMENSION [output_col(eax)] ; -- Even part pxor xmm4,xmm4 punpcklwd xmm4,xmm1 ; xmm4=tmp0 psrad xmm4,(16-CONST_BITS-1) ; psrad xmm4,16 & pslld xmm4,CONST_BITS+1 ; -- Odd part punpckhwd xmm1,xmm0 punpckhwd xmm6,xmm3 movdqa xmm5,xmm1 movdqa xmm2,xmm6 pmaddwd xmm1,[GOTOFF(ebx,PW_F256_F089)] ; xmm1=(tmp2) pmaddwd xmm6,[GOTOFF(ebx,PW_MF060_MF050)] ; xmm6=(tmp2) pmaddwd xmm5,[GOTOFF(ebx,PW_F106_MF217)] ; xmm5=(tmp0) pmaddwd xmm2,[GOTOFF(ebx,PW_F145_MF021)] ; xmm2=(tmp0) paddd xmm6,xmm1 ; xmm6=tmp2 paddd xmm2,xmm5 ; xmm2=tmp0 ; -- Even part punpcklwd xmm0,xmm3 pmaddwd xmm0,[GOTOFF(ebx,PW_F184_MF076)] ; xmm0=tmp2 movdqa xmm7,xmm4 paddd xmm4,xmm0 ; xmm4=tmp10 psubd xmm7,xmm0 ; xmm7=tmp12 ; -- Final output stage movdqa xmm1,[GOTOFF(ebx,PD_DESCALE_P2_4)] ; xmm1=[PD_DESCALE_P2_4] movdqa xmm5,xmm4 movdqa xmm3,xmm7 paddd xmm4,xmm6 ; xmm4=data0=(00 10 20 30) paddd xmm7,xmm2 ; xmm7=data1=(01 11 21 31) psubd xmm5,xmm6 ; xmm5=data3=(03 13 23 33) psubd xmm3,xmm2 ; xmm3=data2=(02 12 22 32) paddd xmm4,xmm1 paddd xmm7,xmm1 psrad xmm4,DESCALE_P2_4 psrad xmm7,DESCALE_P2_4 paddd xmm5,xmm1 paddd xmm3,xmm1 psrad xmm5,DESCALE_P2_4 psrad xmm3,DESCALE_P2_4 packssdw xmm4,xmm3 ; xmm4=(00 10 20 30 02 12 22 32) packssdw xmm7,xmm5 ; xmm7=(01 11 21 31 03 13 23 33) movdqa xmm0,xmm4 ; transpose coefficients(phase 1) punpcklwd xmm4,xmm7 ; xmm4=(00 01 10 11 20 21 30 31) punpckhwd xmm0,xmm7 ; xmm0=(02 03 12 13 22 23 32 33) movdqa xmm6,xmm4 ; transpose coefficients(phase 2) punpckldq xmm4,xmm0 ; xmm4=(00 01 02 03 10 11 12 13) punpckhdq xmm6,xmm0 ; xmm6=(20 21 22 23 30 31 32 33) packsswb xmm4,xmm6 ; xmm4=(00 01 02 03 10 11 12 13 20 ..) paddb xmm4,[GOTOFF(ebx,PB_CENTERJSAMP)] pshufd xmm2,xmm4,0x39 ; xmm2=(10 11 12 13 20 21 22 23 30 ..) pshufd xmm1,xmm4,0x4E ; xmm1=(20 21 22 23 30 31 32 33 00 ..) pshufd xmm3,xmm4,0x93 ; xmm3=(30 31 32 33 00 01 02 03 10 ..) mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] mov esi, JSAMPROW [edi+1*SIZEOF_JSAMPROW] movd XMM_DWORD [edx+eax*SIZEOF_JSAMPLE], xmm4 movd XMM_DWORD [esi+eax*SIZEOF_JSAMPLE], xmm2 mov edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW] mov esi, JSAMPROW [edi+3*SIZEOF_JSAMPROW] movd XMM_DWORD [edx+eax*SIZEOF_JSAMPLE], xmm1 movd XMM_DWORD [esi+eax*SIZEOF_JSAMPLE], xmm3 pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; unused poppic ebx mov esp,ebp ; esp <- aligned ebp pop esp ; esp <- original ebp pop ebp ret ; -------------------------------------------------------------------------- ; ; Perform dequantization and inverse DCT on one block of coefficients, ; producing a reduced-size 2x2 output block. ; ; GLOBAL(void) ; jsimd_idct_2x2_sse2 (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 align 16 global EXTN(jsimd_idct_2x2_sse2) EXTN(jsimd_idct_2x2_sse2): push ebp mov ebp,esp 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. mov edx, POINTER [dct_table(ebp)] ; quantptr mov esi, JCOEFPTR [coef_block(ebp)] ; inptr ; | input: | result: | ; | 00 01 ** 03 ** 05 ** 07 | | ; | 10 11 ** 13 ** 15 ** 17 | | ; | ** ** ** ** ** ** ** ** | | ; | 30 31 ** 33 ** 35 ** 37 | A0 A1 A3 A5 A7 | ; | ** ** ** ** ** ** ** ** | B0 B1 B3 B5 B7 | ; | 50 51 ** 53 ** 55 ** 57 | | ; | ** ** ** ** ** ** ** ** | | ; | 70 71 ** 73 ** 75 ** 77 | | ; -- Odd part movdqa xmm0, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_JCOEF)] movdqa xmm1, XMMWORD [XMMBLOCK(3,0,esi,SIZEOF_JCOEF)] pmullw xmm0, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)] pmullw xmm1, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)] movdqa xmm2, XMMWORD [XMMBLOCK(5,0,esi,SIZEOF_JCOEF)] movdqa xmm3, XMMWORD [XMMBLOCK(7,0,esi,SIZEOF_JCOEF)] pmullw xmm2, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)] pmullw xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)] ; xmm0=(10 11 ** 13 ** 15 ** 17), xmm1=(30 31 ** 33 ** 35 ** 37) ; xmm2=(50 51 ** 53 ** 55 ** 57), xmm3=(70 71 ** 73 ** 75 ** 77) pcmpeqd xmm7,xmm7 pslld xmm7,WORD_BIT ; xmm7={0x0000 0xFFFF 0x0000 0xFFFF ..} movdqa xmm4,xmm0 ; xmm4=(10 11 ** 13 ** 15 ** 17) movdqa xmm5,xmm2 ; xmm5=(50 51 ** 53 ** 55 ** 57) punpcklwd xmm4,xmm1 ; xmm4=(10 30 11 31 ** ** 13 33) punpcklwd xmm5,xmm3 ; xmm5=(50 70 51 71 ** ** 53 73) pmaddwd xmm4,[GOTOFF(ebx,PW_F362_MF127)] pmaddwd xmm5,[GOTOFF(ebx,PW_F085_MF072)] psrld xmm0,WORD_BIT ; xmm0=(11 -- 13 -- 15 -- 17 --) pand xmm1,xmm7 ; xmm1=(-- 31 -- 33 -- 35 -- 37) psrld xmm2,WORD_BIT ; xmm2=(51 -- 53 -- 55 -- 57 --) pand xmm3,xmm7 ; xmm3=(-- 71 -- 73 -- 75 -- 77) por xmm0,xmm1 ; xmm0=(11 31 13 33 15 35 17 37) por xmm2,xmm3 ; xmm2=(51 71 53 73 55 75 57 77) pmaddwd xmm0,[GOTOFF(ebx,PW_F362_MF127)] pmaddwd xmm2,[GOTOFF(ebx,PW_F085_MF072)] paddd xmm4,xmm5 ; xmm4=tmp0[col0 col1 **** col3] paddd xmm0,xmm2 ; xmm0=tmp0[col1 col3 col5 col7] ; -- Even part movdqa xmm6, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_JCOEF)] pmullw xmm6, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)] ; xmm6=(00 01 ** 03 ** 05 ** 07) movdqa xmm1,xmm6 ; xmm1=(00 01 ** 03 ** 05 ** 07) pslld xmm6,WORD_BIT ; xmm6=(-- 00 -- ** -- ** -- **) pand xmm1,xmm7 ; xmm1=(-- 01 -- 03 -- 05 -- 07) psrad xmm6,(WORD_BIT-CONST_BITS-2) ; xmm6=tmp10[col0 **** **** ****] psrad xmm1,(WORD_BIT-CONST_BITS-2) ; xmm1=tmp10[col1 col3 col5 col7] ; -- Final output stage movdqa xmm3,xmm6 movdqa xmm5,xmm1 paddd xmm6,xmm4 ; xmm6=data0[col0 **** **** ****]=(A0 ** ** **) paddd xmm1,xmm0 ; xmm1=data0[col1 col3 col5 col7]=(A1 A3 A5 A7) psubd xmm3,xmm4 ; xmm3=data1[col0 **** **** ****]=(B0 ** ** **) psubd xmm5,xmm0 ; xmm5=data1[col1 col3 col5 col7]=(B1 B3 B5 B7) movdqa xmm2,[GOTOFF(ebx,PD_DESCALE_P1_2)] ; xmm2=[PD_DESCALE_P1_2] punpckldq xmm6,xmm3 ; xmm6=(A0 B0 ** **) movdqa xmm7,xmm1 punpcklqdq xmm1,xmm5 ; xmm1=(A1 A3 B1 B3) punpckhqdq xmm7,xmm5 ; xmm7=(A5 A7 B5 B7) paddd xmm6,xmm2 psrad xmm6,DESCALE_P1_2 paddd xmm1,xmm2 paddd xmm7,xmm2 psrad xmm1,DESCALE_P1_2 psrad xmm7,DESCALE_P1_2 ; -- Prefetch the next coefficient block prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 0*32] prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 1*32] prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 2*32] prefetchnta [esi + DCTSIZE2*SIZEOF_JCOEF + 3*32] ; ---- Pass 2: process rows, store into output array. mov edi, JSAMPARRAY [output_buf(ebp)] ; (JSAMPROW *) mov eax, JDIMENSION [output_col(ebp)] ; | input:| result:| ; | A0 B0 | | ; | A1 B1 | C0 C1 | ; | A3 B3 | D0 D1 | ; | A5 B5 | | ; | A7 B7 | | ; -- Odd part packssdw xmm1,xmm1 ; xmm1=(A1 A3 B1 B3 A1 A3 B1 B3) packssdw xmm7,xmm7 ; xmm7=(A5 A7 B5 B7 A5 A7 B5 B7) pmaddwd xmm1,[GOTOFF(ebx,PW_F362_MF127)] pmaddwd xmm7,[GOTOFF(ebx,PW_F085_MF072)] paddd xmm1,xmm7 ; xmm1=tmp0[row0 row1 row0 row1] ; -- Even part pslld xmm6,(CONST_BITS+2) ; xmm6=tmp10[row0 row1 **** ****] ; -- Final output stage movdqa xmm4,xmm6 paddd xmm6,xmm1 ; xmm6=data0[row0 row1 **** ****]=(C0 C1 ** **) psubd xmm4,xmm1 ; xmm4=data1[row0 row1 **** ****]=(D0 D1 ** **) punpckldq xmm6,xmm4 ; xmm6=(C0 D0 C1 D1) paddd xmm6,[GOTOFF(ebx,PD_DESCALE_P2_2)] psrad xmm6,DESCALE_P2_2 packssdw xmm6,xmm6 ; xmm6=(C0 D0 C1 D1 C0 D0 C1 D1) packsswb xmm6,xmm6 ; xmm6=(C0 D0 C1 D1 C0 D0 C1 D1 ..) paddb xmm6,[GOTOFF(ebx,PB_CENTERJSAMP)] pextrw ebx,xmm6,0x00 ; ebx=(C0 D0 -- --) pextrw ecx,xmm6,0x01 ; ecx=(C1 D1 -- --) mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] mov esi, JSAMPROW [edi+1*SIZEOF_JSAMPROW] mov WORD [edx+eax*SIZEOF_JSAMPLE], bx mov WORD [esi+eax*SIZEOF_JSAMPLE], cx pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx 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