kc3-lang/libjpeg-turbo/simd/i386/jfdctflt-3dn.asm
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Hash : 9a51a87a
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Date : 2019-10-17T11:21:32
x86 SIMD: Remove obsolete [TAB8] comments With apologies to Richard Hendricks, our assembly code no longer uses tabs.
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simd/i386/jfdctflt-3dn.asm
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; ; jfdctflt.asm - floating-point FDCT (3DNow!) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; Copyright (C) 2016, D. R. Commander. ; ; 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 forward DCT ; (Discrete Cosine Transform). The following code is based directly on ; the IJG's original jfdctflt.c; see the jfdctflt.c for more details. %include "jsimdext.inc" %include "jdct.inc" ; -------------------------------------------------------------------------- SECTION SEG_CONST alignz 32 GLOBAL_DATA(jconst_fdct_float_3dnow) EXTN(jconst_fdct_float_3dnow): PD_0_382 times 2 dd 0.382683432365089771728460 PD_0_707 times 2 dd 0.707106781186547524400844 PD_0_541 times 2 dd 0.541196100146196984399723 PD_1_306 times 2 dd 1.306562964876376527856643 alignz 32 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; ; Perform the forward DCT on one block of samples. ; ; GLOBAL(void) ; jsimd_fdct_float_3dnow(FAST_FLOAT *data) ; %define data(b) (b) + 8 ; FAST_FLOAT *data %define original_ebp ebp + 0 %define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_MMWORD ; mmword wk[WK_NUM] %define WK_NUM 2 align 32 GLOBAL_FUNCTION(jsimd_fdct_float_3dnow) EXTN(jsimd_fdct_float_3dnow): 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)] ; (FAST_FLOAT *) mov ecx, DCTSIZE/2 alignx 16, 7 .rowloop: movq mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)] movq mm1, MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)] movq mm2, MMWORD [MMBLOCK(0,3,edx,SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(1,3,edx,SIZEOF_FAST_FLOAT)] ; mm0=(00 01), mm1=(10 11), mm2=(06 07), mm3=(16 17) movq mm4, mm0 ; transpose coefficients punpckldq mm0, mm1 ; mm0=(00 10)=data0 punpckhdq mm4, mm1 ; mm4=(01 11)=data1 movq mm5, mm2 ; transpose coefficients punpckldq mm2, mm3 ; mm2=(06 16)=data6 punpckhdq mm5, mm3 ; mm5=(07 17)=data7 movq mm6, mm4 movq mm7, mm0 pfsub mm4, mm2 ; mm4=data1-data6=tmp6 pfsub mm0, mm5 ; mm0=data0-data7=tmp7 pfadd mm6, mm2 ; mm6=data1+data6=tmp1 pfadd mm7, mm5 ; mm7=data0+data7=tmp0 movq mm1, MMWORD [MMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)] movq mm2, MMWORD [MMBLOCK(0,2,edx,SIZEOF_FAST_FLOAT)] movq mm5, MMWORD [MMBLOCK(1,2,edx,SIZEOF_FAST_FLOAT)] ; mm1=(02 03), mm3=(12 13), mm2=(04 05), mm5=(14 15) movq MMWORD [wk(0)], mm4 ; wk(0)=tmp6 movq MMWORD [wk(1)], mm0 ; wk(1)=tmp7 movq mm4, mm1 ; transpose coefficients punpckldq mm1, mm3 ; mm1=(02 12)=data2 punpckhdq mm4, mm3 ; mm4=(03 13)=data3 movq mm0, mm2 ; transpose coefficients punpckldq mm2, mm5 ; mm2=(04 14)=data4 punpckhdq mm0, mm5 ; mm0=(05 15)=data5 movq mm3, mm4 movq mm5, mm1 pfadd mm4, mm2 ; mm4=data3+data4=tmp3 pfadd mm1, mm0 ; mm1=data2+data5=tmp2 pfsub mm3, mm2 ; mm3=data3-data4=tmp4 pfsub mm5, mm0 ; mm5=data2-data5=tmp5 ; -- Even part movq mm2, mm7 movq mm0, mm6 pfsub mm7, mm4 ; mm7=tmp13 pfsub mm6, mm1 ; mm6=tmp12 pfadd mm2, mm4 ; mm2=tmp10 pfadd mm0, mm1 ; mm0=tmp11 pfadd mm6, mm7 pfmul mm6, [GOTOFF(ebx,PD_0_707)] ; mm6=z1 movq mm4, mm2 movq mm1, mm7 pfsub mm2, mm0 ; mm2=data4 pfsub mm7, mm6 ; mm7=data6 pfadd mm4, mm0 ; mm4=data0 pfadd mm1, mm6 ; mm1=data2 movq MMWORD [MMBLOCK(0,2,edx,SIZEOF_FAST_FLOAT)], mm2 movq MMWORD [MMBLOCK(0,3,edx,SIZEOF_FAST_FLOAT)], mm7 movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)], mm1 ; -- Odd part movq mm0, MMWORD [wk(0)] ; mm0=tmp6 movq mm6, MMWORD [wk(1)] ; mm6=tmp7 pfadd mm3, mm5 ; mm3=tmp10 pfadd mm5, mm0 ; mm5=tmp11 pfadd mm0, mm6 ; mm0=tmp12, mm6=tmp7 pfmul mm5, [GOTOFF(ebx,PD_0_707)] ; mm5=z3 movq mm2, mm3 ; mm2=tmp10 pfsub mm3, mm0 pfmul mm3, [GOTOFF(ebx,PD_0_382)] ; mm3=z5 pfmul mm2, [GOTOFF(ebx,PD_0_541)] ; mm2=MULTIPLY(tmp10,FIX_0_54119610) pfmul mm0, [GOTOFF(ebx,PD_1_306)] ; mm0=MULTIPLY(tmp12,FIX_1_30656296) pfadd mm2, mm3 ; mm2=z2 pfadd mm0, mm3 ; mm0=z4 movq mm7, mm6 pfsub mm6, mm5 ; mm6=z13 pfadd mm7, mm5 ; mm7=z11 movq mm4, mm6 movq mm1, mm7 pfsub mm6, mm2 ; mm6=data3 pfsub mm7, mm0 ; mm7=data7 pfadd mm4, mm2 ; mm4=data5 pfadd mm1, mm0 ; mm1=data1 movq MMWORD [MMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)], mm6 movq MMWORD [MMBLOCK(1,3,edx,SIZEOF_FAST_FLOAT)], mm7 movq MMWORD [MMBLOCK(1,2,edx,SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)], mm1 add edx, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT dec ecx jnz near .rowloop ; ---- Pass 2: process columns. mov edx, POINTER [data(eax)] ; (FAST_FLOAT *) mov ecx, DCTSIZE/2 alignx 16, 7 .columnloop: movq mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)] movq mm1, MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)] movq mm2, MMWORD [MMBLOCK(6,0,edx,SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_FAST_FLOAT)] ; mm0=(00 10), mm1=(01 11), mm2=(60 70), mm3=(61 71) movq mm4, mm0 ; transpose coefficients punpckldq mm0, mm1 ; mm0=(00 01)=data0 punpckhdq mm4, mm1 ; mm4=(10 11)=data1 movq mm5, mm2 ; transpose coefficients punpckldq mm2, mm3 ; mm2=(60 61)=data6 punpckhdq mm5, mm3 ; mm5=(70 71)=data7 movq mm6, mm4 movq mm7, mm0 pfsub mm4, mm2 ; mm4=data1-data6=tmp6 pfsub mm0, mm5 ; mm0=data0-data7=tmp7 pfadd mm6, mm2 ; mm6=data1+data6=tmp1 pfadd mm7, mm5 ; mm7=data0+data7=tmp0 movq mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)] movq mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_FAST_FLOAT)] movq mm5, MMWORD [MMBLOCK(5,0,edx,SIZEOF_FAST_FLOAT)] ; mm1=(20 30), mm3=(21 31), mm2=(40 50), mm5=(41 51) movq MMWORD [wk(0)], mm4 ; wk(0)=tmp6 movq MMWORD [wk(1)], mm0 ; wk(1)=tmp7 movq mm4, mm1 ; transpose coefficients punpckldq mm1, mm3 ; mm1=(20 21)=data2 punpckhdq mm4, mm3 ; mm4=(30 31)=data3 movq mm0, mm2 ; transpose coefficients punpckldq mm2, mm5 ; mm2=(40 41)=data4 punpckhdq mm0, mm5 ; mm0=(50 51)=data5 movq mm3, mm4 movq mm5, mm1 pfadd mm4, mm2 ; mm4=data3+data4=tmp3 pfadd mm1, mm0 ; mm1=data2+data5=tmp2 pfsub mm3, mm2 ; mm3=data3-data4=tmp4 pfsub mm5, mm0 ; mm5=data2-data5=tmp5 ; -- Even part movq mm2, mm7 movq mm0, mm6 pfsub mm7, mm4 ; mm7=tmp13 pfsub mm6, mm1 ; mm6=tmp12 pfadd mm2, mm4 ; mm2=tmp10 pfadd mm0, mm1 ; mm0=tmp11 pfadd mm6, mm7 pfmul mm6, [GOTOFF(ebx,PD_0_707)] ; mm6=z1 movq mm4, mm2 movq mm1, mm7 pfsub mm2, mm0 ; mm2=data4 pfsub mm7, mm6 ; mm7=data6 pfadd mm4, mm0 ; mm4=data0 pfadd mm1, mm6 ; mm1=data2 movq MMWORD [MMBLOCK(4,0,edx,SIZEOF_FAST_FLOAT)], mm2 movq MMWORD [MMBLOCK(6,0,edx,SIZEOF_FAST_FLOAT)], mm7 movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)], mm1 ; -- Odd part movq mm0, MMWORD [wk(0)] ; mm0=tmp6 movq mm6, MMWORD [wk(1)] ; mm6=tmp7 pfadd mm3, mm5 ; mm3=tmp10 pfadd mm5, mm0 ; mm5=tmp11 pfadd mm0, mm6 ; mm0=tmp12, mm6=tmp7 pfmul mm5, [GOTOFF(ebx,PD_0_707)] ; mm5=z3 movq mm2, mm3 ; mm2=tmp10 pfsub mm3, mm0 pfmul mm3, [GOTOFF(ebx,PD_0_382)] ; mm3=z5 pfmul mm2, [GOTOFF(ebx,PD_0_541)] ; mm2=MULTIPLY(tmp10,FIX_0_54119610) pfmul mm0, [GOTOFF(ebx,PD_1_306)] ; mm0=MULTIPLY(tmp12,FIX_1_30656296) pfadd mm2, mm3 ; mm2=z2 pfadd mm0, mm3 ; mm0=z4 movq mm7, mm6 pfsub mm6, mm5 ; mm6=z13 pfadd mm7, mm5 ; mm7=z11 movq mm4, mm6 movq mm1, mm7 pfsub mm6, mm2 ; mm6=data3 pfsub mm7, mm0 ; mm7=data7 pfadd mm4, mm2 ; mm4=data5 pfadd mm1, mm0 ; mm1=data1 movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)], mm6 movq MMWORD [MMBLOCK(7,0,edx,SIZEOF_FAST_FLOAT)], mm7 movq MMWORD [MMBLOCK(5,0,edx,SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)], mm1 add edx, byte 2*SIZEOF_FAST_FLOAT dec ecx jnz near .columnloop femms ; empty MMX/3DNow! 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 32