зеркало из https://github.com/mozilla/pjs.git
371 строка
11 KiB
NASM
371 строка
11 KiB
NASM
;
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; jfsseflt.asm - floating-point FDCT (SSE)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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;
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; Based on
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; x86 SIMD extension for IJG JPEG library
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; Copyright (C) 1999-2006, MIYASAKA Masaru.
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; For conditions of distribution and use, see copyright notice in jsimdext.inc
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;
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; This file should be assembled with NASM (Netwide Assembler),
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; can *not* be assembled with Microsoft's MASM or any compatible
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; assembler (including Borland's Turbo Assembler).
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; NASM is available from http://nasm.sourceforge.net/ or
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; http://sourceforge.net/project/showfiles.php?group_id=6208
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;
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; This file contains a floating-point implementation of the forward DCT
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; (Discrete Cosine Transform). The following code is based directly on
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; the IJG's original jfdctflt.c; see the jfdctflt.c for more details.
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;
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; [TAB8]
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%include "jsimdext.inc"
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%include "jdct.inc"
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; --------------------------------------------------------------------------
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%macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5)
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shufps %1,%2,0x44
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%endmacro
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%macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7)
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shufps %1,%2,0xEE
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%endmacro
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; --------------------------------------------------------------------------
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SECTION SEG_CONST
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alignz 16
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global EXTN(jconst_fdct_float_sse)
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EXTN(jconst_fdct_float_sse):
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PD_0_382 times 4 dd 0.382683432365089771728460
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PD_0_707 times 4 dd 0.707106781186547524400844
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PD_0_541 times 4 dd 0.541196100146196984399723
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PD_1_306 times 4 dd 1.306562964876376527856643
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alignz 16
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 32
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;
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; Perform the forward DCT on one block of samples.
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;
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; GLOBAL(void)
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; jsimd_fdct_float_sse (FAST_FLOAT * data)
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;
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%define data(b) (b)+8 ; FAST_FLOAT * data
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%define original_ebp ebp+0
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%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
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%define WK_NUM 2
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align 16
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global EXTN(jsimd_fdct_float_sse)
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EXTN(jsimd_fdct_float_sse):
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push ebp
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mov eax,esp ; eax = original ebp
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sub esp, byte 4
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and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
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mov [esp],eax
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mov ebp,esp ; ebp = aligned ebp
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lea esp, [wk(0)]
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pushpic ebx
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; push ecx ; need not be preserved
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; push edx ; need not be preserved
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; push esi ; unused
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; push edi ; unused
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get_GOT ebx ; get GOT address
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; ---- Pass 1: process rows.
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mov edx, POINTER [data(eax)] ; (FAST_FLOAT *)
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mov ecx, DCTSIZE/4
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alignx 16,7
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.rowloop:
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movaps xmm0, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm1, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm2, XMMWORD [XMMBLOCK(2,1,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm3, XMMWORD [XMMBLOCK(3,1,edx,SIZEOF_FAST_FLOAT)]
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; xmm0=(20 21 22 23), xmm2=(24 25 26 27)
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; xmm1=(30 31 32 33), xmm3=(34 35 36 37)
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movaps xmm4,xmm0 ; transpose coefficients(phase 1)
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unpcklps xmm0,xmm1 ; xmm0=(20 30 21 31)
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unpckhps xmm4,xmm1 ; xmm4=(22 32 23 33)
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movaps xmm5,xmm2 ; transpose coefficients(phase 1)
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unpcklps xmm2,xmm3 ; xmm2=(24 34 25 35)
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unpckhps xmm5,xmm3 ; xmm5=(26 36 27 37)
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movaps xmm6, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm7, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm1, XMMWORD [XMMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm3, XMMWORD [XMMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)]
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; xmm6=(00 01 02 03), xmm1=(04 05 06 07)
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; xmm7=(10 11 12 13), xmm3=(14 15 16 17)
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movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 32 23 33)
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movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(24 34 25 35)
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movaps xmm4,xmm6 ; transpose coefficients(phase 1)
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unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11)
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unpckhps xmm4,xmm7 ; xmm4=(02 12 03 13)
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movaps xmm2,xmm1 ; transpose coefficients(phase 1)
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unpcklps xmm1,xmm3 ; xmm1=(04 14 05 15)
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unpckhps xmm2,xmm3 ; xmm2=(06 16 07 17)
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movaps xmm7,xmm6 ; transpose coefficients(phase 2)
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unpcklps2 xmm6,xmm0 ; xmm6=(00 10 20 30)=data0
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unpckhps2 xmm7,xmm0 ; xmm7=(01 11 21 31)=data1
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movaps xmm3,xmm2 ; transpose coefficients(phase 2)
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unpcklps2 xmm2,xmm5 ; xmm2=(06 16 26 36)=data6
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unpckhps2 xmm3,xmm5 ; xmm3=(07 17 27 37)=data7
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movaps xmm0,xmm7
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movaps xmm5,xmm6
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subps xmm7,xmm2 ; xmm7=data1-data6=tmp6
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subps xmm6,xmm3 ; xmm6=data0-data7=tmp7
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addps xmm0,xmm2 ; xmm0=data1+data6=tmp1
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addps xmm5,xmm3 ; xmm5=data0+data7=tmp0
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movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 32 23 33)
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movaps xmm3, XMMWORD [wk(1)] ; xmm3=(24 34 25 35)
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movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6
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movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
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movaps xmm7,xmm4 ; transpose coefficients(phase 2)
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unpcklps2 xmm4,xmm2 ; xmm4=(02 12 22 32)=data2
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unpckhps2 xmm7,xmm2 ; xmm7=(03 13 23 33)=data3
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movaps xmm6,xmm1 ; transpose coefficients(phase 2)
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unpcklps2 xmm1,xmm3 ; xmm1=(04 14 24 34)=data4
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unpckhps2 xmm6,xmm3 ; xmm6=(05 15 25 35)=data5
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movaps xmm2,xmm7
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movaps xmm3,xmm4
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addps xmm7,xmm1 ; xmm7=data3+data4=tmp3
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addps xmm4,xmm6 ; xmm4=data2+data5=tmp2
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subps xmm2,xmm1 ; xmm2=data3-data4=tmp4
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subps xmm3,xmm6 ; xmm3=data2-data5=tmp5
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; -- Even part
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movaps xmm1,xmm5
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movaps xmm6,xmm0
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subps xmm5,xmm7 ; xmm5=tmp13
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subps xmm0,xmm4 ; xmm0=tmp12
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addps xmm1,xmm7 ; xmm1=tmp10
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addps xmm6,xmm4 ; xmm6=tmp11
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addps xmm0,xmm5
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mulps xmm0,[GOTOFF(ebx,PD_0_707)] ; xmm0=z1
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movaps xmm7,xmm1
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movaps xmm4,xmm5
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subps xmm1,xmm6 ; xmm1=data4
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subps xmm5,xmm0 ; xmm5=data6
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addps xmm7,xmm6 ; xmm7=data0
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addps xmm4,xmm0 ; xmm4=data2
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movaps XMMWORD [XMMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)], xmm1
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movaps XMMWORD [XMMBLOCK(2,1,edx,SIZEOF_FAST_FLOAT)], xmm5
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movaps XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)], xmm7
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movaps XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)], xmm4
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; -- Odd part
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movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6
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movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7
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addps xmm2,xmm3 ; xmm2=tmp10
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addps xmm3,xmm6 ; xmm3=tmp11
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addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7
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mulps xmm3,[GOTOFF(ebx,PD_0_707)] ; xmm3=z3
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movaps xmm1,xmm2 ; xmm1=tmp10
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subps xmm2,xmm6
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mulps xmm2,[GOTOFF(ebx,PD_0_382)] ; xmm2=z5
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mulps xmm1,[GOTOFF(ebx,PD_0_541)] ; xmm1=MULTIPLY(tmp10,FIX_0_541196)
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mulps xmm6,[GOTOFF(ebx,PD_1_306)] ; xmm6=MULTIPLY(tmp12,FIX_1_306562)
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addps xmm1,xmm2 ; xmm1=z2
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addps xmm6,xmm2 ; xmm6=z4
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movaps xmm5,xmm0
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subps xmm0,xmm3 ; xmm0=z13
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addps xmm5,xmm3 ; xmm5=z11
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movaps xmm7,xmm0
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movaps xmm4,xmm5
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subps xmm0,xmm1 ; xmm0=data3
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subps xmm5,xmm6 ; xmm5=data7
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addps xmm7,xmm1 ; xmm7=data5
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addps xmm4,xmm6 ; xmm4=data1
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movaps XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)], xmm0
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movaps XMMWORD [XMMBLOCK(3,1,edx,SIZEOF_FAST_FLOAT)], xmm5
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movaps XMMWORD [XMMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)], xmm7
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movaps XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)], xmm4
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add edx, 4*DCTSIZE*SIZEOF_FAST_FLOAT
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dec ecx
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jnz near .rowloop
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; ---- Pass 2: process columns.
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mov edx, POINTER [data(eax)] ; (FAST_FLOAT *)
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mov ecx, DCTSIZE/4
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alignx 16,7
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.columnloop:
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movaps xmm0, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm1, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm2, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_FAST_FLOAT)]
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; xmm0=(02 12 22 32), xmm2=(42 52 62 72)
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; xmm1=(03 13 23 33), xmm3=(43 53 63 73)
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movaps xmm4,xmm0 ; transpose coefficients(phase 1)
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unpcklps xmm0,xmm1 ; xmm0=(02 03 12 13)
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unpckhps xmm4,xmm1 ; xmm4=(22 23 32 33)
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movaps xmm5,xmm2 ; transpose coefficients(phase 1)
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unpcklps xmm2,xmm3 ; xmm2=(42 43 52 53)
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unpckhps xmm5,xmm3 ; xmm5=(62 63 72 73)
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movaps xmm6, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm7, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm1, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_FAST_FLOAT)]
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movaps xmm3, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_FAST_FLOAT)]
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; xmm6=(00 10 20 30), xmm1=(40 50 60 70)
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; xmm7=(01 11 21 31), xmm3=(41 51 61 71)
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movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 23 32 33)
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movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(42 43 52 53)
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movaps xmm4,xmm6 ; transpose coefficients(phase 1)
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unpcklps xmm6,xmm7 ; xmm6=(00 01 10 11)
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unpckhps xmm4,xmm7 ; xmm4=(20 21 30 31)
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movaps xmm2,xmm1 ; transpose coefficients(phase 1)
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unpcklps xmm1,xmm3 ; xmm1=(40 41 50 51)
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unpckhps xmm2,xmm3 ; xmm2=(60 61 70 71)
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movaps xmm7,xmm6 ; transpose coefficients(phase 2)
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unpcklps2 xmm6,xmm0 ; xmm6=(00 01 02 03)=data0
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unpckhps2 xmm7,xmm0 ; xmm7=(10 11 12 13)=data1
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movaps xmm3,xmm2 ; transpose coefficients(phase 2)
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unpcklps2 xmm2,xmm5 ; xmm2=(60 61 62 63)=data6
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unpckhps2 xmm3,xmm5 ; xmm3=(70 71 72 73)=data7
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movaps xmm0,xmm7
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movaps xmm5,xmm6
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subps xmm7,xmm2 ; xmm7=data1-data6=tmp6
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subps xmm6,xmm3 ; xmm6=data0-data7=tmp7
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addps xmm0,xmm2 ; xmm0=data1+data6=tmp1
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addps xmm5,xmm3 ; xmm5=data0+data7=tmp0
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movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 23 32 33)
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movaps xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53)
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movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6
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movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
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movaps xmm7,xmm4 ; transpose coefficients(phase 2)
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unpcklps2 xmm4,xmm2 ; xmm4=(20 21 22 23)=data2
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unpckhps2 xmm7,xmm2 ; xmm7=(30 31 32 33)=data3
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movaps xmm6,xmm1 ; transpose coefficients(phase 2)
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unpcklps2 xmm1,xmm3 ; xmm1=(40 41 42 43)=data4
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unpckhps2 xmm6,xmm3 ; xmm6=(50 51 52 53)=data5
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movaps xmm2,xmm7
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movaps xmm3,xmm4
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addps xmm7,xmm1 ; xmm7=data3+data4=tmp3
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addps xmm4,xmm6 ; xmm4=data2+data5=tmp2
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subps xmm2,xmm1 ; xmm2=data3-data4=tmp4
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subps xmm3,xmm6 ; xmm3=data2-data5=tmp5
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; -- Even part
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movaps xmm1,xmm5
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movaps xmm6,xmm0
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subps xmm5,xmm7 ; xmm5=tmp13
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subps xmm0,xmm4 ; xmm0=tmp12
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addps xmm1,xmm7 ; xmm1=tmp10
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addps xmm6,xmm4 ; xmm6=tmp11
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addps xmm0,xmm5
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mulps xmm0,[GOTOFF(ebx,PD_0_707)] ; xmm0=z1
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movaps xmm7,xmm1
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movaps xmm4,xmm5
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subps xmm1,xmm6 ; xmm1=data4
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subps xmm5,xmm0 ; xmm5=data6
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addps xmm7,xmm6 ; xmm7=data0
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addps xmm4,xmm0 ; xmm4=data2
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movaps XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_FAST_FLOAT)], xmm1
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movaps XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_FAST_FLOAT)], xmm5
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movaps XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)], xmm7
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movaps XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_FAST_FLOAT)], xmm4
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; -- Odd part
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movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6
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movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7
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addps xmm2,xmm3 ; xmm2=tmp10
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addps xmm3,xmm6 ; xmm3=tmp11
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addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7
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mulps xmm3,[GOTOFF(ebx,PD_0_707)] ; xmm3=z3
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movaps xmm1,xmm2 ; xmm1=tmp10
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subps xmm2,xmm6
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mulps xmm2,[GOTOFF(ebx,PD_0_382)] ; xmm2=z5
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mulps xmm1,[GOTOFF(ebx,PD_0_541)] ; xmm1=MULTIPLY(tmp10,FIX_0_541196)
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mulps xmm6,[GOTOFF(ebx,PD_1_306)] ; xmm6=MULTIPLY(tmp12,FIX_1_306562)
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addps xmm1,xmm2 ; xmm1=z2
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addps xmm6,xmm2 ; xmm6=z4
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movaps xmm5,xmm0
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subps xmm0,xmm3 ; xmm0=z13
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addps xmm5,xmm3 ; xmm5=z11
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movaps xmm7,xmm0
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movaps xmm4,xmm5
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subps xmm0,xmm1 ; xmm0=data3
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subps xmm5,xmm6 ; xmm5=data7
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addps xmm7,xmm1 ; xmm7=data5
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addps xmm4,xmm6 ; xmm4=data1
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movaps XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_FAST_FLOAT)], xmm0
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movaps XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_FAST_FLOAT)], xmm5
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movaps XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_FAST_FLOAT)], xmm7
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movaps XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)], xmm4
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add edx, byte 4*SIZEOF_FAST_FLOAT
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dec ecx
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jnz near .columnloop
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; pop edi ; unused
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; pop esi ; unused
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; pop edx ; need not be preserved
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; pop ecx ; need not be preserved
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poppic ebx
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mov esp,ebp ; esp <- aligned ebp
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pop esp ; esp <- original ebp
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pop ebp
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ret
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; For some reason, the OS X linker does not honor the request to align the
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; segment unless we do this.
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align 16
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