kc3-lang/libjpeg-turbo/simd/jfdctfst-mmx.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/jfdctfst-mmx.asm
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; ; jfdctfst.asm - fast integer FDCT (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 fast, not so accurate integer implementation of ; the forward DCT (Discrete Cosine Transform). The following code is ; based directly on the IJG's original jfdctfst.c; see the jfdctfst.c ; for more details. ; ; [TAB8] %include "jsimdext.inc" %include "jdct.inc" ; -------------------------------------------------------------------------- %define CONST_BITS 8 ; 14 is also OK. %if CONST_BITS == 8 F_0_382 equ 98 ; FIX(0.382683433) F_0_541 equ 139 ; FIX(0.541196100) F_0_707 equ 181 ; FIX(0.707106781) F_1_306 equ 334 ; FIX(1.306562965) %else ; NASM cannot do compile-time arithmetic on floating-point constants. %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) F_0_382 equ DESCALE( 410903207,30-CONST_BITS) ; FIX(0.382683433) F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100) F_0_707 equ DESCALE( 759250124,30-CONST_BITS) ; FIX(0.707106781) F_1_306 equ DESCALE(1402911301,30-CONST_BITS) ; FIX(1.306562965) %endif ; -------------------------------------------------------------------------- SECTION SEG_CONST ; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow) ; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw) %define PRE_MULTIPLY_SCALE_BITS 2 %define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS) alignz 16 global EXTN(jconst_fdct_ifast_mmx) EXTN(jconst_fdct_ifast_mmx): PW_F0707 times 4 dw F_0_707 << CONST_SHIFT PW_F0382 times 4 dw F_0_382 << CONST_SHIFT PW_F0541 times 4 dw F_0_541 << CONST_SHIFT PW_F1306 times 4 dw F_1_306 << CONST_SHIFT alignz 16 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; ; Perform the forward DCT on one block of samples. ; ; GLOBAL(void) ; jsimd_fdct_ifast_mmx (DCTELEM *data) ; %define data(b) (b)+8 ; DCTELEM *data %define original_ebp ebp+0 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] %define WK_NUM 2 align 16 global EXTN(jsimd_fdct_ifast_mmx) EXTN(jsimd_fdct_ifast_mmx): push ebp mov eax,esp ; eax = original ebp sub esp, byte 4 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits mov [esp],eax mov ebp,esp ; ebp = aligned ebp lea esp, [wk(0)] pushpic ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved ; push esi ; unused ; push edi ; unused get_GOT ebx ; get GOT address ; ---- Pass 1: process rows. mov edx, POINTER [data(eax)] ; (DCTELEM *) mov ecx, DCTSIZE/4 alignx 16,7 .rowloop: movq mm0, MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)] movq mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)] movq mm2, MMWORD [MMBLOCK(2,1,edx,SIZEOF_DCTELEM)] movq mm3, MMWORD [MMBLOCK(3,1,edx,SIZEOF_DCTELEM)] ; mm0=(20 21 22 23), mm2=(24 25 26 27) ; mm1=(30 31 32 33), mm3=(34 35 36 37) movq mm4,mm0 ; transpose coefficients(phase 1) punpcklwd mm0,mm1 ; mm0=(20 30 21 31) punpckhwd mm4,mm1 ; mm4=(22 32 23 33) movq mm5,mm2 ; transpose coefficients(phase 1) punpcklwd mm2,mm3 ; mm2=(24 34 25 35) punpckhwd mm5,mm3 ; mm5=(26 36 27 37) movq mm6, MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)] movq mm7, MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)] movq mm1, MMWORD [MMBLOCK(0,1,edx,SIZEOF_DCTELEM)] movq mm3, MMWORD [MMBLOCK(1,1,edx,SIZEOF_DCTELEM)] ; mm6=(00 01 02 03), mm1=(04 05 06 07) ; mm7=(10 11 12 13), mm3=(14 15 16 17) movq MMWORD [wk(0)], mm4 ; wk(0)=(22 32 23 33) movq MMWORD [wk(1)], mm2 ; wk(1)=(24 34 25 35) movq mm4,mm6 ; transpose coefficients(phase 1) punpcklwd mm6,mm7 ; mm6=(00 10 01 11) punpckhwd mm4,mm7 ; mm4=(02 12 03 13) movq mm2,mm1 ; transpose coefficients(phase 1) punpcklwd mm1,mm3 ; mm1=(04 14 05 15) punpckhwd mm2,mm3 ; mm2=(06 16 07 17) movq mm7,mm6 ; transpose coefficients(phase 2) punpckldq mm6,mm0 ; mm6=(00 10 20 30)=data0 punpckhdq mm7,mm0 ; mm7=(01 11 21 31)=data1 movq mm3,mm2 ; transpose coefficients(phase 2) punpckldq mm2,mm5 ; mm2=(06 16 26 36)=data6 punpckhdq mm3,mm5 ; mm3=(07 17 27 37)=data7 movq mm0,mm7 movq mm5,mm6 psubw mm7,mm2 ; mm7=data1-data6=tmp6 psubw mm6,mm3 ; mm6=data0-data7=tmp7 paddw mm0,mm2 ; mm0=data1+data6=tmp1 paddw mm5,mm3 ; mm5=data0+data7=tmp0 movq mm2, MMWORD [wk(0)] ; mm2=(22 32 23 33) movq mm3, MMWORD [wk(1)] ; mm3=(24 34 25 35) movq MMWORD [wk(0)], mm7 ; wk(0)=tmp6 movq MMWORD [wk(1)], mm6 ; wk(1)=tmp7 movq mm7,mm4 ; transpose coefficients(phase 2) punpckldq mm4,mm2 ; mm4=(02 12 22 32)=data2 punpckhdq mm7,mm2 ; mm7=(03 13 23 33)=data3 movq mm6,mm1 ; transpose coefficients(phase 2) punpckldq mm1,mm3 ; mm1=(04 14 24 34)=data4 punpckhdq mm6,mm3 ; mm6=(05 15 25 35)=data5 movq mm2,mm7 movq mm3,mm4 paddw mm7,mm1 ; mm7=data3+data4=tmp3 paddw mm4,mm6 ; mm4=data2+data5=tmp2 psubw mm2,mm1 ; mm2=data3-data4=tmp4 psubw mm3,mm6 ; mm3=data2-data5=tmp5 ; -- Even part movq mm1,mm5 movq mm6,mm0 psubw mm5,mm7 ; mm5=tmp13 psubw mm0,mm4 ; mm0=tmp12 paddw mm1,mm7 ; mm1=tmp10 paddw mm6,mm4 ; mm6=tmp11 paddw mm0,mm5 psllw mm0,PRE_MULTIPLY_SCALE_BITS pmulhw mm0,[GOTOFF(ebx,PW_F0707)] ; mm0=z1 movq mm7,mm1 movq mm4,mm5 psubw mm1,mm6 ; mm1=data4 psubw mm5,mm0 ; mm5=data6 paddw mm7,mm6 ; mm7=data0 paddw mm4,mm0 ; mm4=data2 movq MMWORD [MMBLOCK(0,1,edx,SIZEOF_DCTELEM)], mm1 movq MMWORD [MMBLOCK(2,1,edx,SIZEOF_DCTELEM)], mm5 movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)], mm7 movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)], mm4 ; -- Odd part movq mm6, MMWORD [wk(0)] ; mm6=tmp6 movq mm0, MMWORD [wk(1)] ; mm0=tmp7 paddw mm2,mm3 ; mm2=tmp10 paddw mm3,mm6 ; mm3=tmp11 paddw mm6,mm0 ; mm6=tmp12, mm0=tmp7 psllw mm2,PRE_MULTIPLY_SCALE_BITS psllw mm6,PRE_MULTIPLY_SCALE_BITS psllw mm3,PRE_MULTIPLY_SCALE_BITS pmulhw mm3,[GOTOFF(ebx,PW_F0707)] ; mm3=z3 movq mm1,mm2 ; mm1=tmp10 psubw mm2,mm6 pmulhw mm2,[GOTOFF(ebx,PW_F0382)] ; mm2=z5 pmulhw mm1,[GOTOFF(ebx,PW_F0541)] ; mm1=MULTIPLY(tmp10,FIX_0_54119610) pmulhw mm6,[GOTOFF(ebx,PW_F1306)] ; mm6=MULTIPLY(tmp12,FIX_1_30656296) paddw mm1,mm2 ; mm1=z2 paddw mm6,mm2 ; mm6=z4 movq mm5,mm0 psubw mm0,mm3 ; mm0=z13 paddw mm5,mm3 ; mm5=z11 movq mm7,mm0 movq mm4,mm5 psubw mm0,mm1 ; mm0=data3 psubw mm5,mm6 ; mm5=data7 paddw mm7,mm1 ; mm7=data5 paddw mm4,mm6 ; mm4=data1 movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)], mm0 movq MMWORD [MMBLOCK(3,1,edx,SIZEOF_DCTELEM)], mm5 movq MMWORD [MMBLOCK(1,1,edx,SIZEOF_DCTELEM)], mm7 movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)], mm4 add edx, byte 4*DCTSIZE*SIZEOF_DCTELEM dec ecx jnz near .rowloop ; ---- Pass 2: process columns. mov edx, POINTER [data(eax)] ; (DCTELEM *) mov ecx, DCTSIZE/4 alignx 16,7 .columnloop: movq mm0, MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)] movq mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)] movq mm2, MMWORD [MMBLOCK(6,0,edx,SIZEOF_DCTELEM)] movq mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_DCTELEM)] ; mm0=(02 12 22 32), mm2=(42 52 62 72) ; mm1=(03 13 23 33), mm3=(43 53 63 73) movq mm4,mm0 ; transpose coefficients(phase 1) punpcklwd mm0,mm1 ; mm0=(02 03 12 13) punpckhwd mm4,mm1 ; mm4=(22 23 32 33) movq mm5,mm2 ; transpose coefficients(phase 1) punpcklwd mm2,mm3 ; mm2=(42 43 52 53) punpckhwd mm5,mm3 ; mm5=(62 63 72 73) movq mm6, MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)] movq mm7, MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)] movq mm1, MMWORD [MMBLOCK(4,0,edx,SIZEOF_DCTELEM)] movq mm3, MMWORD [MMBLOCK(5,0,edx,SIZEOF_DCTELEM)] ; mm6=(00 10 20 30), mm1=(40 50 60 70) ; mm7=(01 11 21 31), mm3=(41 51 61 71) movq MMWORD [wk(0)], mm4 ; wk(0)=(22 23 32 33) movq MMWORD [wk(1)], mm2 ; wk(1)=(42 43 52 53) movq mm4,mm6 ; transpose coefficients(phase 1) punpcklwd mm6,mm7 ; mm6=(00 01 10 11) punpckhwd mm4,mm7 ; mm4=(20 21 30 31) movq mm2,mm1 ; transpose coefficients(phase 1) punpcklwd mm1,mm3 ; mm1=(40 41 50 51) punpckhwd mm2,mm3 ; mm2=(60 61 70 71) movq mm7,mm6 ; transpose coefficients(phase 2) punpckldq mm6,mm0 ; mm6=(00 01 02 03)=data0 punpckhdq mm7,mm0 ; mm7=(10 11 12 13)=data1 movq mm3,mm2 ; transpose coefficients(phase 2) punpckldq mm2,mm5 ; mm2=(60 61 62 63)=data6 punpckhdq mm3,mm5 ; mm3=(70 71 72 73)=data7 movq mm0,mm7 movq mm5,mm6 psubw mm7,mm2 ; mm7=data1-data6=tmp6 psubw mm6,mm3 ; mm6=data0-data7=tmp7 paddw mm0,mm2 ; mm0=data1+data6=tmp1 paddw mm5,mm3 ; mm5=data0+data7=tmp0 movq mm2, MMWORD [wk(0)] ; mm2=(22 23 32 33) movq mm3, MMWORD [wk(1)] ; mm3=(42 43 52 53) movq MMWORD [wk(0)], mm7 ; wk(0)=tmp6 movq MMWORD [wk(1)], mm6 ; wk(1)=tmp7 movq mm7,mm4 ; transpose coefficients(phase 2) punpckldq mm4,mm2 ; mm4=(20 21 22 23)=data2 punpckhdq mm7,mm2 ; mm7=(30 31 32 33)=data3 movq mm6,mm1 ; transpose coefficients(phase 2) punpckldq mm1,mm3 ; mm1=(40 41 42 43)=data4 punpckhdq mm6,mm3 ; mm6=(50 51 52 53)=data5 movq mm2,mm7 movq mm3,mm4 paddw mm7,mm1 ; mm7=data3+data4=tmp3 paddw mm4,mm6 ; mm4=data2+data5=tmp2 psubw mm2,mm1 ; mm2=data3-data4=tmp4 psubw mm3,mm6 ; mm3=data2-data5=tmp5 ; -- Even part movq mm1,mm5 movq mm6,mm0 psubw mm5,mm7 ; mm5=tmp13 psubw mm0,mm4 ; mm0=tmp12 paddw mm1,mm7 ; mm1=tmp10 paddw mm6,mm4 ; mm6=tmp11 paddw mm0,mm5 psllw mm0,PRE_MULTIPLY_SCALE_BITS pmulhw mm0,[GOTOFF(ebx,PW_F0707)] ; mm0=z1 movq mm7,mm1 movq mm4,mm5 psubw mm1,mm6 ; mm1=data4 psubw mm5,mm0 ; mm5=data6 paddw mm7,mm6 ; mm7=data0 paddw mm4,mm0 ; mm4=data2 movq MMWORD [MMBLOCK(4,0,edx,SIZEOF_DCTELEM)], mm1 movq MMWORD [MMBLOCK(6,0,edx,SIZEOF_DCTELEM)], mm5 movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)], mm7 movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)], mm4 ; -- Odd part movq mm6, MMWORD [wk(0)] ; mm6=tmp6 movq mm0, MMWORD [wk(1)] ; mm0=tmp7 paddw mm2,mm3 ; mm2=tmp10 paddw mm3,mm6 ; mm3=tmp11 paddw mm6,mm0 ; mm6=tmp12, mm0=tmp7 psllw mm2,PRE_MULTIPLY_SCALE_BITS psllw mm6,PRE_MULTIPLY_SCALE_BITS psllw mm3,PRE_MULTIPLY_SCALE_BITS pmulhw mm3,[GOTOFF(ebx,PW_F0707)] ; mm3=z3 movq mm1,mm2 ; mm1=tmp10 psubw mm2,mm6 pmulhw mm2,[GOTOFF(ebx,PW_F0382)] ; mm2=z5 pmulhw mm1,[GOTOFF(ebx,PW_F0541)] ; mm1=MULTIPLY(tmp10,FIX_0_54119610) pmulhw mm6,[GOTOFF(ebx,PW_F1306)] ; mm6=MULTIPLY(tmp12,FIX_1_30656296) paddw mm1,mm2 ; mm1=z2 paddw mm6,mm2 ; mm6=z4 movq mm5,mm0 psubw mm0,mm3 ; mm0=z13 paddw mm5,mm3 ; mm5=z11 movq mm7,mm0 movq mm4,mm5 psubw mm0,mm1 ; mm0=data3 psubw mm5,mm6 ; mm5=data7 paddw mm7,mm1 ; mm7=data5 paddw mm4,mm6 ; mm4=data1 movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)], mm0 movq MMWORD [MMBLOCK(7,0,edx,SIZEOF_DCTELEM)], mm5 movq MMWORD [MMBLOCK(5,0,edx,SIZEOF_DCTELEM)], mm7 movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)], mm4 add edx, byte 4*SIZEOF_DCTELEM dec ecx jnz near .columnloop emms ; empty MMX state ; pop edi ; unused ; pop esi ; unused ; pop edx ; need not be preserved ; pop ecx ; need not be preserved poppic 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