зеркало из https://github.com/mozilla/mozjpeg.git
493 строки
16 KiB
NASM
493 строки
16 KiB
NASM
;
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; jiss2fst-64.asm - fast integer IDCT (64-bit SSE2)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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; Copyright 2009 D. R. Commander
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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/projecpt/showfiles.php?group_id=6208
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;
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; This file contains a fast, not so accurate integer implementation of
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; the inverse DCT (Discrete Cosine Transform). The following code is
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; based directly on the IJG's original jidctfst.c; see the jidctfst.c
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; 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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%define CONST_BITS 8 ; 14 is also OK.
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%define PASS1_BITS 2
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%if IFAST_SCALE_BITS != PASS1_BITS
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%error "'IFAST_SCALE_BITS' must be equal to 'PASS1_BITS'."
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%endif
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%if CONST_BITS == 8
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F_1_082 equ 277 ; FIX(1.082392200)
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F_1_414 equ 362 ; FIX(1.414213562)
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F_1_847 equ 473 ; FIX(1.847759065)
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F_2_613 equ 669 ; FIX(2.613125930)
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F_1_613 equ (F_2_613 - 256) ; FIX(2.613125930) - FIX(1)
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%else
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; NASM cannot do compile-time arithmetic on floating-point constants.
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%define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
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F_1_082 equ DESCALE(1162209775,30-CONST_BITS) ; FIX(1.082392200)
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F_1_414 equ DESCALE(1518500249,30-CONST_BITS) ; FIX(1.414213562)
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F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)
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F_2_613 equ DESCALE(2805822602,30-CONST_BITS) ; FIX(2.613125930)
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F_1_613 equ (F_2_613 - (1 << CONST_BITS)) ; FIX(2.613125930) - FIX(1)
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%endif
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; --------------------------------------------------------------------------
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SECTION SEG_CONST
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; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow)
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; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw)
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%define PRE_MULTIPLY_SCALE_BITS 2
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%define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS)
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alignz 16
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global EXTN(jconst_idct_ifast_sse2)
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EXTN(jconst_idct_ifast_sse2):
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PW_F1414 times 8 dw F_1_414 << CONST_SHIFT
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PW_F1847 times 8 dw F_1_847 << CONST_SHIFT
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PW_MF1613 times 8 dw -F_1_613 << CONST_SHIFT
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PW_F1082 times 8 dw F_1_082 << CONST_SHIFT
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PB_CENTERJSAMP times 16 db CENTERJSAMPLE
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alignz 16
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 64
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;
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; Perform dequantization and inverse DCT on one block of coefficients.
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;
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; GLOBAL(void)
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; jsimd_idct_ifast_sse2 (void * dct_table, JCOEFPTR coef_block,
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; JSAMPARRAY output_buf, JDIMENSION output_col)
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;
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; r10 = jpeg_component_info * compptr
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; r11 = JCOEFPTR coef_block
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; r12 = JSAMPARRAY output_buf
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; r13 = JDIMENSION output_col
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%define original_rbp rbp+0
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%define wk(i) rbp-(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_idct_ifast_sse2)
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EXTN(jsimd_idct_ifast_sse2):
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push rbp
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mov rax,rsp ; rax = original rbp
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sub rsp, byte 4
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and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
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mov [rsp],rax
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mov rbp,rsp ; rbp = aligned rbp
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lea rsp, [wk(0)]
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collect_args
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; ---- Pass 1: process columns from input.
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mov rdx, r10 ; quantptr
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mov rsi, r11 ; inptr
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%ifndef NO_ZERO_COLUMN_TEST_IFAST_SSE2
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mov eax, DWORD [DWBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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or eax, DWORD [DWBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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jnz near .columnDCT
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movdqa xmm0, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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por xmm0, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)]
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por xmm1, XMMWORD [XMMBLOCK(4,0,rsi,SIZEOF_JCOEF)]
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por xmm0, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)]
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por xmm1, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)]
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por xmm0, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)]
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por xmm1,xmm0
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packsswb xmm1,xmm1
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packsswb xmm1,xmm1
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movd eax,xmm1
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test rax,rax
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jnz short .columnDCT
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; -- AC terms all zero
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movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)]
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movdqa xmm7,xmm0 ; xmm0=in0=(00 01 02 03 04 05 06 07)
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punpcklwd xmm0,xmm0 ; xmm0=(00 00 01 01 02 02 03 03)
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punpckhwd xmm7,xmm7 ; xmm7=(04 04 05 05 06 06 07 07)
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pshufd xmm6,xmm0,0x00 ; xmm6=col0=(00 00 00 00 00 00 00 00)
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pshufd xmm2,xmm0,0x55 ; xmm2=col1=(01 01 01 01 01 01 01 01)
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pshufd xmm5,xmm0,0xAA ; xmm5=col2=(02 02 02 02 02 02 02 02)
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pshufd xmm0,xmm0,0xFF ; xmm0=col3=(03 03 03 03 03 03 03 03)
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pshufd xmm1,xmm7,0x00 ; xmm1=col4=(04 04 04 04 04 04 04 04)
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pshufd xmm4,xmm7,0x55 ; xmm4=col5=(05 05 05 05 05 05 05 05)
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pshufd xmm3,xmm7,0xAA ; xmm3=col6=(06 06 06 06 06 06 06 06)
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pshufd xmm7,xmm7,0xFF ; xmm7=col7=(07 07 07 07 07 07 07 07)
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movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=col1
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movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=col3
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jmp near .column_end
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%endif
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.columnDCT:
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; -- Even part
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movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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pmullw xmm1, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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movdqa xmm2, XMMWORD [XMMBLOCK(4,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm3, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm2, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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pmullw xmm3, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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movdqa xmm4,xmm0
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movdqa xmm5,xmm1
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psubw xmm0,xmm2 ; xmm0=tmp11
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psubw xmm1,xmm3
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paddw xmm4,xmm2 ; xmm4=tmp10
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paddw xmm5,xmm3 ; xmm5=tmp13
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psllw xmm1,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm1,[rel PW_F1414]
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psubw xmm1,xmm5 ; xmm1=tmp12
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movdqa xmm6,xmm4
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movdqa xmm7,xmm0
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psubw xmm4,xmm5 ; xmm4=tmp3
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psubw xmm0,xmm1 ; xmm0=tmp2
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paddw xmm6,xmm5 ; xmm6=tmp0
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paddw xmm7,xmm1 ; xmm7=tmp1
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movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=tmp3
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movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=tmp2
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; -- Odd part
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movdqa xmm2, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm3, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm2, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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pmullw xmm3, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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movdqa xmm5, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)]
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movdqa xmm1, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)]
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pmullw xmm5, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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pmullw xmm1, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_IFAST_MULT_TYPE)]
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movdqa xmm4,xmm2
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movdqa xmm0,xmm5
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psubw xmm2,xmm1 ; xmm2=z12
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psubw xmm5,xmm3 ; xmm5=z10
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paddw xmm4,xmm1 ; xmm4=z11
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paddw xmm0,xmm3 ; xmm0=z13
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movdqa xmm1,xmm5 ; xmm1=z10(unscaled)
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psllw xmm2,PRE_MULTIPLY_SCALE_BITS
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psllw xmm5,PRE_MULTIPLY_SCALE_BITS
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movdqa xmm3,xmm4
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psubw xmm4,xmm0
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paddw xmm3,xmm0 ; xmm3=tmp7
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psllw xmm4,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm4,[rel PW_F1414] ; xmm4=tmp11
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; To avoid overflow...
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;
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; (Original)
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; tmp12 = -2.613125930 * z10 + z5;
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;
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; (This implementation)
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; tmp12 = (-1.613125930 - 1) * z10 + z5;
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; = -1.613125930 * z10 - z10 + z5;
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movdqa xmm0,xmm5
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paddw xmm5,xmm2
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pmulhw xmm5,[rel PW_F1847] ; xmm5=z5
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pmulhw xmm0,[rel PW_MF1613]
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pmulhw xmm2,[rel PW_F1082]
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psubw xmm0,xmm1
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psubw xmm2,xmm5 ; xmm2=tmp10
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paddw xmm0,xmm5 ; xmm0=tmp12
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; -- Final output stage
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psubw xmm0,xmm3 ; xmm0=tmp6
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movdqa xmm1,xmm6
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movdqa xmm5,xmm7
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paddw xmm6,xmm3 ; xmm6=data0=(00 01 02 03 04 05 06 07)
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paddw xmm7,xmm0 ; xmm7=data1=(10 11 12 13 14 15 16 17)
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psubw xmm1,xmm3 ; xmm1=data7=(70 71 72 73 74 75 76 77)
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psubw xmm5,xmm0 ; xmm5=data6=(60 61 62 63 64 65 66 67)
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psubw xmm4,xmm0 ; xmm4=tmp5
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movdqa xmm3,xmm6 ; transpose coefficients(phase 1)
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punpcklwd xmm6,xmm7 ; xmm6=(00 10 01 11 02 12 03 13)
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punpckhwd xmm3,xmm7 ; xmm3=(04 14 05 15 06 16 07 17)
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movdqa xmm0,xmm5 ; transpose coefficients(phase 1)
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punpcklwd xmm5,xmm1 ; xmm5=(60 70 61 71 62 72 63 73)
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punpckhwd xmm0,xmm1 ; xmm0=(64 74 65 75 66 76 67 77)
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movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp2
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movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp3
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movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(60 70 61 71 62 72 63 73)
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movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(64 74 65 75 66 76 67 77)
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paddw xmm2,xmm4 ; xmm2=tmp4
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movdqa xmm5,xmm7
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movdqa xmm0,xmm1
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paddw xmm7,xmm4 ; xmm7=data2=(20 21 22 23 24 25 26 27)
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paddw xmm1,xmm2 ; xmm1=data4=(40 41 42 43 44 45 46 47)
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psubw xmm5,xmm4 ; xmm5=data5=(50 51 52 53 54 55 56 57)
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psubw xmm0,xmm2 ; xmm0=data3=(30 31 32 33 34 35 36 37)
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movdqa xmm4,xmm7 ; transpose coefficients(phase 1)
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punpcklwd xmm7,xmm0 ; xmm7=(20 30 21 31 22 32 23 33)
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punpckhwd xmm4,xmm0 ; xmm4=(24 34 25 35 26 36 27 37)
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movdqa xmm2,xmm1 ; transpose coefficients(phase 1)
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punpcklwd xmm1,xmm5 ; xmm1=(40 50 41 51 42 52 43 53)
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punpckhwd xmm2,xmm5 ; xmm2=(44 54 45 55 46 56 47 57)
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movdqa xmm0,xmm3 ; transpose coefficients(phase 2)
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punpckldq xmm3,xmm4 ; xmm3=(04 14 24 34 05 15 25 35)
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punpckhdq xmm0,xmm4 ; xmm0=(06 16 26 36 07 17 27 37)
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movdqa xmm5,xmm6 ; transpose coefficients(phase 2)
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punpckldq xmm6,xmm7 ; xmm6=(00 10 20 30 01 11 21 31)
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punpckhdq xmm5,xmm7 ; xmm5=(02 12 22 32 03 13 23 33)
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movdqa xmm4, XMMWORD [wk(0)] ; xmm4=(60 70 61 71 62 72 63 73)
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movdqa xmm7, XMMWORD [wk(1)] ; xmm7=(64 74 65 75 66 76 67 77)
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movdqa XMMWORD [wk(0)], xmm3 ; wk(0)=(04 14 24 34 05 15 25 35)
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movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(06 16 26 36 07 17 27 37)
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movdqa xmm3,xmm1 ; transpose coefficients(phase 2)
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punpckldq xmm1,xmm4 ; xmm1=(40 50 60 70 41 51 61 71)
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punpckhdq xmm3,xmm4 ; xmm3=(42 52 62 72 43 53 63 73)
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movdqa xmm0,xmm2 ; transpose coefficients(phase 2)
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punpckldq xmm2,xmm7 ; xmm2=(44 54 64 74 45 55 65 75)
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punpckhdq xmm0,xmm7 ; xmm0=(46 56 66 76 47 57 67 77)
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movdqa xmm4,xmm6 ; transpose coefficients(phase 3)
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punpcklqdq xmm6,xmm1 ; xmm6=col0=(00 10 20 30 40 50 60 70)
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punpckhqdq xmm4,xmm1 ; xmm4=col1=(01 11 21 31 41 51 61 71)
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movdqa xmm7,xmm5 ; transpose coefficients(phase 3)
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punpcklqdq xmm5,xmm3 ; xmm5=col2=(02 12 22 32 42 52 62 72)
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punpckhqdq xmm7,xmm3 ; xmm7=col3=(03 13 23 33 43 53 63 73)
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movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(04 14 24 34 05 15 25 35)
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movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(06 16 26 36 07 17 27 37)
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movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=col1
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movdqa XMMWORD [wk(1)], xmm7 ; wk(1)=col3
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movdqa xmm4,xmm1 ; transpose coefficients(phase 3)
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punpcklqdq xmm1,xmm2 ; xmm1=col4=(04 14 24 34 44 54 64 74)
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punpckhqdq xmm4,xmm2 ; xmm4=col5=(05 15 25 35 45 55 65 75)
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movdqa xmm7,xmm3 ; transpose coefficients(phase 3)
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punpcklqdq xmm3,xmm0 ; xmm3=col6=(06 16 26 36 46 56 66 76)
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punpckhqdq xmm7,xmm0 ; xmm7=col7=(07 17 27 37 47 57 67 77)
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.column_end:
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; -- Prefetch the next coefficient block
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 0*32]
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 1*32]
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 2*32]
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prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 3*32]
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; ---- Pass 2: process rows from work array, store into output array.
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mov rax, [original_rbp]
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mov rdi, r12 ; (JSAMPROW *)
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mov rax, r13
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; -- Even part
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; xmm6=col0, xmm5=col2, xmm1=col4, xmm3=col6
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movdqa xmm2,xmm6
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movdqa xmm0,xmm5
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psubw xmm6,xmm1 ; xmm6=tmp11
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psubw xmm5,xmm3
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paddw xmm2,xmm1 ; xmm2=tmp10
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paddw xmm0,xmm3 ; xmm0=tmp13
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psllw xmm5,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm5,[rel PW_F1414]
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psubw xmm5,xmm0 ; xmm5=tmp12
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movdqa xmm1,xmm2
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movdqa xmm3,xmm6
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psubw xmm2,xmm0 ; xmm2=tmp3
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psubw xmm6,xmm5 ; xmm6=tmp2
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paddw xmm1,xmm0 ; xmm1=tmp0
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paddw xmm3,xmm5 ; xmm3=tmp1
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movdqa xmm0, XMMWORD [wk(0)] ; xmm0=col1
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movdqa xmm5, XMMWORD [wk(1)] ; xmm5=col3
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movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=tmp3
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movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp2
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; -- Odd part
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; xmm0=col1, xmm5=col3, xmm4=col5, xmm7=col7
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movdqa xmm2,xmm0
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movdqa xmm6,xmm4
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psubw xmm0,xmm7 ; xmm0=z12
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psubw xmm4,xmm5 ; xmm4=z10
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paddw xmm2,xmm7 ; xmm2=z11
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paddw xmm6,xmm5 ; xmm6=z13
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movdqa xmm7,xmm4 ; xmm7=z10(unscaled)
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psllw xmm0,PRE_MULTIPLY_SCALE_BITS
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psllw xmm4,PRE_MULTIPLY_SCALE_BITS
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movdqa xmm5,xmm2
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psubw xmm2,xmm6
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paddw xmm5,xmm6 ; xmm5=tmp7
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psllw xmm2,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm2,[rel PW_F1414] ; xmm2=tmp11
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; To avoid overflow...
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;
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; (Original)
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; tmp12 = -2.613125930 * z10 + z5;
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;
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; (This implementation)
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; tmp12 = (-1.613125930 - 1) * z10 + z5;
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; = -1.613125930 * z10 - z10 + z5;
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movdqa xmm6,xmm4
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paddw xmm4,xmm0
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pmulhw xmm4,[rel PW_F1847] ; xmm4=z5
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pmulhw xmm6,[rel PW_MF1613]
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pmulhw xmm0,[rel PW_F1082]
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psubw xmm6,xmm7
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psubw xmm0,xmm4 ; xmm0=tmp10
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paddw xmm6,xmm4 ; xmm6=tmp12
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; -- Final output stage
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psubw xmm6,xmm5 ; xmm6=tmp6
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movdqa xmm7,xmm1
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movdqa xmm4,xmm3
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paddw xmm1,xmm5 ; xmm1=data0=(00 10 20 30 40 50 60 70)
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paddw xmm3,xmm6 ; xmm3=data1=(01 11 21 31 41 51 61 71)
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psraw xmm1,(PASS1_BITS+3) ; descale
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psraw xmm3,(PASS1_BITS+3) ; descale
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psubw xmm7,xmm5 ; xmm7=data7=(07 17 27 37 47 57 67 77)
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psubw xmm4,xmm6 ; xmm4=data6=(06 16 26 36 46 56 66 76)
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psraw xmm7,(PASS1_BITS+3) ; descale
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psraw xmm4,(PASS1_BITS+3) ; descale
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psubw xmm2,xmm6 ; xmm2=tmp5
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|
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packsswb xmm1,xmm4 ; xmm1=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76)
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packsswb xmm3,xmm7 ; xmm3=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77)
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movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp2
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movdqa xmm6, XMMWORD [wk(0)] ; xmm6=tmp3
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paddw xmm0,xmm2 ; xmm0=tmp4
|
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movdqa xmm4,xmm5
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movdqa xmm7,xmm6
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|
paddw xmm5,xmm2 ; xmm5=data2=(02 12 22 32 42 52 62 72)
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paddw xmm6,xmm0 ; xmm6=data4=(04 14 24 34 44 54 64 74)
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psraw xmm5,(PASS1_BITS+3) ; descale
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psraw xmm6,(PASS1_BITS+3) ; descale
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psubw xmm4,xmm2 ; xmm4=data5=(05 15 25 35 45 55 65 75)
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psubw xmm7,xmm0 ; xmm7=data3=(03 13 23 33 43 53 63 73)
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psraw xmm4,(PASS1_BITS+3) ; descale
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psraw xmm7,(PASS1_BITS+3) ; descale
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movdqa xmm2,[rel PB_CENTERJSAMP] ; xmm2=[rel PB_CENTERJSAMP]
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|
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packsswb xmm5,xmm6 ; xmm5=(02 12 22 32 42 52 62 72 04 14 24 34 44 54 64 74)
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packsswb xmm7,xmm4 ; xmm7=(03 13 23 33 43 53 63 73 05 15 25 35 45 55 65 75)
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paddb xmm1,xmm2
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paddb xmm3,xmm2
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paddb xmm5,xmm2
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paddb xmm7,xmm2
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|
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|
movdqa xmm0,xmm1 ; transpose coefficients(phase 1)
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|
punpcklbw xmm1,xmm3 ; xmm1=(00 01 10 11 20 21 30 31 40 41 50 51 60 61 70 71)
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|
punpckhbw xmm0,xmm3 ; xmm0=(06 07 16 17 26 27 36 37 46 47 56 57 66 67 76 77)
|
|
movdqa xmm6,xmm5 ; transpose coefficients(phase 1)
|
|
punpcklbw xmm5,xmm7 ; xmm5=(02 03 12 13 22 23 32 33 42 43 52 53 62 63 72 73)
|
|
punpckhbw xmm6,xmm7 ; xmm6=(04 05 14 15 24 25 34 35 44 45 54 55 64 65 74 75)
|
|
|
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movdqa xmm4,xmm1 ; transpose coefficients(phase 2)
|
|
punpcklwd xmm1,xmm5 ; xmm1=(00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33)
|
|
punpckhwd xmm4,xmm5 ; xmm4=(40 41 42 43 50 51 52 53 60 61 62 63 70 71 72 73)
|
|
movdqa xmm2,xmm6 ; transpose coefficients(phase 2)
|
|
punpcklwd xmm6,xmm0 ; xmm6=(04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37)
|
|
punpckhwd xmm2,xmm0 ; xmm2=(44 45 46 47 54 55 56 57 64 65 66 67 74 75 76 77)
|
|
|
|
movdqa xmm3,xmm1 ; transpose coefficients(phase 3)
|
|
punpckldq xmm1,xmm6 ; xmm1=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17)
|
|
punpckhdq xmm3,xmm6 ; xmm3=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37)
|
|
movdqa xmm7,xmm4 ; transpose coefficients(phase 3)
|
|
punpckldq xmm4,xmm2 ; xmm4=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57)
|
|
punpckhdq xmm7,xmm2 ; xmm7=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77)
|
|
|
|
pshufd xmm5,xmm1,0x4E ; xmm5=(10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07)
|
|
pshufd xmm0,xmm3,0x4E ; xmm0=(30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27)
|
|
pshufd xmm6,xmm4,0x4E ; xmm6=(50 51 52 53 54 55 56 57 40 41 42 43 44 45 46 47)
|
|
pshufd xmm2,xmm7,0x4E ; xmm2=(70 71 72 73 74 75 76 77 60 61 62 63 64 65 66 67)
|
|
|
|
mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW]
|
|
mov rsi, JSAMPROW [rdi+2*SIZEOF_JSAMPROW]
|
|
movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm1
|
|
movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm3
|
|
mov rdx, JSAMPROW [rdi+4*SIZEOF_JSAMPROW]
|
|
mov rsi, JSAMPROW [rdi+6*SIZEOF_JSAMPROW]
|
|
movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm4
|
|
movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm7
|
|
|
|
mov rdx, JSAMPROW [rdi+1*SIZEOF_JSAMPROW]
|
|
mov rsi, JSAMPROW [rdi+3*SIZEOF_JSAMPROW]
|
|
movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm5
|
|
movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm0
|
|
mov rdx, JSAMPROW [rdi+5*SIZEOF_JSAMPROW]
|
|
mov rsi, JSAMPROW [rdi+7*SIZEOF_JSAMPROW]
|
|
movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm6
|
|
movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm2
|
|
|
|
uncollect_args
|
|
mov rsp,rbp ; rsp <- aligned rbp
|
|
pop rsp ; rsp <- original rbp
|
|
pop rbp
|
|
ret
|
|
ret
|
|
|
|
; For some reason, the OS X linker does not honor the request to align the
|
|
; segment unless we do this.
|
|
align 16
|