Add m-esr52 at 52.6.0

1 files changed, 440 insertions, 0 deletions

diff --git a/media/libjpeg/simd/jdcolext-sse2-64.asm b/media/libjpeg/simd/jdcolext-sse2-64.asm
new file mode 100644
index 000000000..4634066c4
--- /dev/null
+++ b/media/libjpeg/simd/jdcolext-sse2-64.asm
@@ -0,0 +1,440 @@
+;
+; jdcolext.asm - colorspace conversion (64-bit SSE2)
+;
+; Copyright 2009, 2012 Pierre Ossman <ossman@cendio.se> for Cendio AB
+; Copyright (C) 2009, 2012, 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
+;
+; [TAB8]
+
+%include "jcolsamp.inc"
+
+; --------------------------------------------------------------------------
+;
+; Convert some rows of samples to the output colorspace.
+;
+; GLOBAL(void)
+; jsimd_ycc_rgb_convert_sse2 (JDIMENSION out_width,
+;                             JSAMPIMAGE input_buf, JDIMENSION input_row,
+;                             JSAMPARRAY output_buf, int num_rows)
+;
+
+; r10 = JDIMENSION out_width
+; r11 = JSAMPIMAGE input_buf
+; r12 = JDIMENSION input_row
+; r13 = JSAMPARRAY output_buf
+; r14 = int num_rows
+
+%define wk(i)           rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
+%define WK_NUM          2
+
+        align   16
+        global  EXTN(jsimd_ycc_rgb_convert_sse2)
+
+EXTN(jsimd_ycc_rgb_convert_sse2):
+        push    rbp
+        mov     rax,rsp                         ; rax = original rbp
+        sub     rsp, byte 4
+        and     rsp, byte (-SIZEOF_XMMWORD)     ; align to 128 bits
+        mov     [rsp],rax
+        mov     rbp,rsp                         ; rbp = aligned rbp
+        lea     rsp, [wk(0)]
+        collect_args
+        push    rbx
+
+        mov     ecx, r10d        ; num_cols
+        test    rcx,rcx
+        jz      near .return
+
+        push    rcx
+
+        mov     rdi, r11
+        mov     ecx, r12d
+        mov     rsi, JSAMPARRAY [rdi+0*SIZEOF_JSAMPARRAY]
+        mov     rbx, JSAMPARRAY [rdi+1*SIZEOF_JSAMPARRAY]
+        mov     rdx, JSAMPARRAY [rdi+2*SIZEOF_JSAMPARRAY]
+        lea     rsi, [rsi+rcx*SIZEOF_JSAMPROW]
+        lea     rbx, [rbx+rcx*SIZEOF_JSAMPROW]
+        lea     rdx, [rdx+rcx*SIZEOF_JSAMPROW]
+
+        pop     rcx
+
+        mov     rdi, r13
+        mov     eax, r14d
+        test    rax,rax
+        jle     near .return
+.rowloop:
+        push    rax
+        push    rdi
+        push    rdx
+        push    rbx
+        push    rsi
+        push    rcx                     ; col
+
+        mov     rsi, JSAMPROW [rsi]     ; inptr0
+        mov     rbx, JSAMPROW [rbx]     ; inptr1
+        mov     rdx, JSAMPROW [rdx]     ; inptr2
+        mov     rdi, JSAMPROW [rdi]     ; outptr
+.columnloop:
+
+        movdqa  xmm5, XMMWORD [rbx]     ; xmm5=Cb(0123456789ABCDEF)
+        movdqa  xmm1, XMMWORD [rdx]     ; xmm1=Cr(0123456789ABCDEF)
+
+        pcmpeqw xmm4,xmm4
+        pcmpeqw xmm7,xmm7
+        psrlw   xmm4,BYTE_BIT
+        psllw   xmm7,7                  ; xmm7={0xFF80 0xFF80 0xFF80 0xFF80 ..}
+        movdqa  xmm0,xmm4               ; xmm0=xmm4={0xFF 0x00 0xFF 0x00 ..}
+
+        pand    xmm4,xmm5               ; xmm4=Cb(02468ACE)=CbE
+        psrlw   xmm5,BYTE_BIT           ; xmm5=Cb(13579BDF)=CbO
+        pand    xmm0,xmm1               ; xmm0=Cr(02468ACE)=CrE
+        psrlw   xmm1,BYTE_BIT           ; xmm1=Cr(13579BDF)=CrO
+
+        paddw   xmm4,xmm7
+        paddw   xmm5,xmm7
+        paddw   xmm0,xmm7
+        paddw   xmm1,xmm7
+
+        ; (Original)
+        ; R = Y                + 1.40200 * Cr
+        ; G = Y - 0.34414 * Cb - 0.71414 * Cr
+        ; B = Y + 1.77200 * Cb
+        ;
+        ; (This implementation)
+        ; R = Y                + 0.40200 * Cr + Cr
+        ; G = Y - 0.34414 * Cb + 0.28586 * Cr - Cr
+        ; B = Y - 0.22800 * Cb + Cb + Cb
+
+        movdqa  xmm2,xmm4               ; xmm2=CbE
+        movdqa  xmm3,xmm5               ; xmm3=CbO
+        paddw   xmm4,xmm4               ; xmm4=2*CbE
+        paddw   xmm5,xmm5               ; xmm5=2*CbO
+        movdqa  xmm6,xmm0               ; xmm6=CrE
+        movdqa  xmm7,xmm1               ; xmm7=CrO
+        paddw   xmm0,xmm0               ; xmm0=2*CrE
+        paddw   xmm1,xmm1               ; xmm1=2*CrO
+
+        pmulhw  xmm4,[rel PW_MF0228]    ; xmm4=(2*CbE * -FIX(0.22800))
+        pmulhw  xmm5,[rel PW_MF0228]    ; xmm5=(2*CbO * -FIX(0.22800))
+        pmulhw  xmm0,[rel PW_F0402]     ; xmm0=(2*CrE * FIX(0.40200))
+        pmulhw  xmm1,[rel PW_F0402]     ; xmm1=(2*CrO * FIX(0.40200))
+
+        paddw   xmm4,[rel PW_ONE]
+        paddw   xmm5,[rel PW_ONE]
+        psraw   xmm4,1                  ; xmm4=(CbE * -FIX(0.22800))
+        psraw   xmm5,1                  ; xmm5=(CbO * -FIX(0.22800))
+        paddw   xmm0,[rel PW_ONE]
+        paddw   xmm1,[rel PW_ONE]
+        psraw   xmm0,1                  ; xmm0=(CrE * FIX(0.40200))
+        psraw   xmm1,1                  ; xmm1=(CrO * FIX(0.40200))
+
+        paddw   xmm4,xmm2
+        paddw   xmm5,xmm3
+        paddw   xmm4,xmm2               ; xmm4=(CbE * FIX(1.77200))=(B-Y)E
+        paddw   xmm5,xmm3               ; xmm5=(CbO * FIX(1.77200))=(B-Y)O
+        paddw   xmm0,xmm6               ; xmm0=(CrE * FIX(1.40200))=(R-Y)E
+        paddw   xmm1,xmm7               ; xmm1=(CrO * FIX(1.40200))=(R-Y)O
+
+        movdqa  XMMWORD [wk(0)], xmm4   ; wk(0)=(B-Y)E
+        movdqa  XMMWORD [wk(1)], xmm5   ; wk(1)=(B-Y)O
+
+        movdqa    xmm4,xmm2
+        movdqa    xmm5,xmm3
+        punpcklwd xmm2,xmm6
+        punpckhwd xmm4,xmm6
+        pmaddwd   xmm2,[rel PW_MF0344_F0285]
+        pmaddwd   xmm4,[rel PW_MF0344_F0285]
+        punpcklwd xmm3,xmm7
+        punpckhwd xmm5,xmm7
+        pmaddwd   xmm3,[rel PW_MF0344_F0285]
+        pmaddwd   xmm5,[rel PW_MF0344_F0285]
+
+        paddd     xmm2,[rel PD_ONEHALF]
+        paddd     xmm4,[rel PD_ONEHALF]
+        psrad     xmm2,SCALEBITS
+        psrad     xmm4,SCALEBITS
+        paddd     xmm3,[rel PD_ONEHALF]
+        paddd     xmm5,[rel PD_ONEHALF]
+        psrad     xmm3,SCALEBITS
+        psrad     xmm5,SCALEBITS
+
+        packssdw  xmm2,xmm4     ; xmm2=CbE*-FIX(0.344)+CrE*FIX(0.285)
+        packssdw  xmm3,xmm5     ; xmm3=CbO*-FIX(0.344)+CrO*FIX(0.285)
+        psubw     xmm2,xmm6     ; xmm2=CbE*-FIX(0.344)+CrE*-FIX(0.714)=(G-Y)E
+        psubw     xmm3,xmm7     ; xmm3=CbO*-FIX(0.344)+CrO*-FIX(0.714)=(G-Y)O
+
+        movdqa    xmm5, XMMWORD [rsi]   ; xmm5=Y(0123456789ABCDEF)
+
+        pcmpeqw   xmm4,xmm4
+        psrlw     xmm4,BYTE_BIT         ; xmm4={0xFF 0x00 0xFF 0x00 ..}
+        pand      xmm4,xmm5             ; xmm4=Y(02468ACE)=YE
+        psrlw     xmm5,BYTE_BIT         ; xmm5=Y(13579BDF)=YO
+
+        paddw     xmm0,xmm4             ; xmm0=((R-Y)E+YE)=RE=R(02468ACE)
+        paddw     xmm1,xmm5             ; xmm1=((R-Y)O+YO)=RO=R(13579BDF)
+        packuswb  xmm0,xmm0             ; xmm0=R(02468ACE********)
+        packuswb  xmm1,xmm1             ; xmm1=R(13579BDF********)
+
+        paddw     xmm2,xmm4             ; xmm2=((G-Y)E+YE)=GE=G(02468ACE)
+        paddw     xmm3,xmm5             ; xmm3=((G-Y)O+YO)=GO=G(13579BDF)
+        packuswb  xmm2,xmm2             ; xmm2=G(02468ACE********)
+        packuswb  xmm3,xmm3             ; xmm3=G(13579BDF********)
+
+        paddw     xmm4, XMMWORD [wk(0)] ; xmm4=(YE+(B-Y)E)=BE=B(02468ACE)
+        paddw     xmm5, XMMWORD [wk(1)] ; xmm5=(YO+(B-Y)O)=BO=B(13579BDF)
+        packuswb  xmm4,xmm4             ; xmm4=B(02468ACE********)
+        packuswb  xmm5,xmm5             ; xmm5=B(13579BDF********)
+
+%if RGB_PIXELSIZE == 3 ; ---------------
+
+        ; xmmA=(00 02 04 06 08 0A 0C 0E **), xmmB=(01 03 05 07 09 0B 0D 0F **)
+        ; xmmC=(10 12 14 16 18 1A 1C 1E **), xmmD=(11 13 15 17 19 1B 1D 1F **)
+        ; xmmE=(20 22 24 26 28 2A 2C 2E **), xmmF=(21 23 25 27 29 2B 2D 2F **)
+        ; xmmG=(** ** ** ** ** ** ** ** **), xmmH=(** ** ** ** ** ** ** ** **)
+
+        punpcklbw xmmA,xmmC     ; xmmA=(00 10 02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E)
+        punpcklbw xmmE,xmmB     ; xmmE=(20 01 22 03 24 05 26 07 28 09 2A 0B 2C 0D 2E 0F)
+        punpcklbw xmmD,xmmF     ; xmmD=(11 21 13 23 15 25 17 27 19 29 1B 2B 1D 2D 1F 2F)
+
+        movdqa    xmmG,xmmA
+        movdqa    xmmH,xmmA
+        punpcklwd xmmA,xmmE     ; xmmA=(00 10 20 01 02 12 22 03 04 14 24 05 06 16 26 07)
+        punpckhwd xmmG,xmmE     ; xmmG=(08 18 28 09 0A 1A 2A 0B 0C 1C 2C 0D 0E 1E 2E 0F)
+
+        psrldq    xmmH,2        ; xmmH=(02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E -- --)
+        psrldq    xmmE,2        ; xmmE=(22 03 24 05 26 07 28 09 2A 0B 2C 0D 2E 0F -- --)
+
+        movdqa    xmmC,xmmD
+        movdqa    xmmB,xmmD
+        punpcklwd xmmD,xmmH     ; xmmD=(11 21 02 12 13 23 04 14 15 25 06 16 17 27 08 18)
+        punpckhwd xmmC,xmmH     ; xmmC=(19 29 0A 1A 1B 2B 0C 1C 1D 2D 0E 1E 1F 2F -- --)
+
+        psrldq    xmmB,2        ; xmmB=(13 23 15 25 17 27 19 29 1B 2B 1D 2D 1F 2F -- --)
+
+        movdqa    xmmF,xmmE
+        punpcklwd xmmE,xmmB     ; xmmE=(22 03 13 23 24 05 15 25 26 07 17 27 28 09 19 29)
+        punpckhwd xmmF,xmmB     ; xmmF=(2A 0B 1B 2B 2C 0D 1D 2D 2E 0F 1F 2F -- -- -- --)
+
+        pshufd    xmmH,xmmA,0x4E; xmmH=(04 14 24 05 06 16 26 07 00 10 20 01 02 12 22 03)
+        movdqa    xmmB,xmmE
+        punpckldq xmmA,xmmD     ; xmmA=(00 10 20 01 11 21 02 12 02 12 22 03 13 23 04 14)
+        punpckldq xmmE,xmmH     ; xmmE=(22 03 13 23 04 14 24 05 24 05 15 25 06 16 26 07)
+        punpckhdq xmmD,xmmB     ; xmmD=(15 25 06 16 26 07 17 27 17 27 08 18 28 09 19 29)
+
+        pshufd    xmmH,xmmG,0x4E; xmmH=(0C 1C 2C 0D 0E 1E 2E 0F 08 18 28 09 0A 1A 2A 0B)
+        movdqa    xmmB,xmmF
+        punpckldq xmmG,xmmC     ; xmmG=(08 18 28 09 19 29 0A 1A 0A 1A 2A 0B 1B 2B 0C 1C)
+        punpckldq xmmF,xmmH     ; xmmF=(2A 0B 1B 2B 0C 1C 2C 0D 2C 0D 1D 2D 0E 1E 2E 0F)
+        punpckhdq xmmC,xmmB     ; xmmC=(1D 2D 0E 1E 2E 0F 1F 2F 1F 2F -- -- -- -- -- --)
+
+        punpcklqdq xmmA,xmmE    ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05)
+        punpcklqdq xmmD,xmmG    ; xmmD=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A)
+        punpcklqdq xmmF,xmmC    ; xmmF=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F)
+
+        cmp     rcx, byte SIZEOF_XMMWORD
+        jb      short .column_st32
+
+        test    rdi, SIZEOF_XMMWORD-1
+        jnz     short .out1
+        ; --(aligned)-------------------
+        movntdq XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        movntdq XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
+        movntdq XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmF
+        jmp     short .out0
+.out1:  ; --(unaligned)-----------------
+        movdqu  XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        movdqu  XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
+        movdqu  XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmF
+.out0:
+        add     rdi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD  ; outptr
+        sub     rcx, byte SIZEOF_XMMWORD
+        jz      near .nextrow
+
+        add     rsi, byte SIZEOF_XMMWORD        ; inptr0
+        add     rbx, byte SIZEOF_XMMWORD        ; inptr1
+        add     rdx, byte SIZEOF_XMMWORD        ; inptr2
+        jmp     near .columnloop
+
+.column_st32:
+        lea     rcx, [rcx+rcx*2]                ; imul ecx, RGB_PIXELSIZE
+        cmp     rcx, byte 2*SIZEOF_XMMWORD
+        jb      short .column_st16
+        movdqu  XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        movdqu  XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
+        add     rdi, byte 2*SIZEOF_XMMWORD      ; outptr
+        movdqa  xmmA,xmmF
+        sub     rcx, byte 2*SIZEOF_XMMWORD
+        jmp     short .column_st15
+.column_st16:
+        cmp     rcx, byte SIZEOF_XMMWORD
+        jb      short .column_st15
+        movdqu  XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        add     rdi, byte SIZEOF_XMMWORD        ; outptr
+        movdqa  xmmA,xmmD
+        sub     rcx, byte SIZEOF_XMMWORD
+.column_st15:
+        ; Store the lower 8 bytes of xmmA to the output when it has enough
+        ; space.
+        cmp     rcx, byte SIZEOF_MMWORD
+        jb      short .column_st7
+        movq    XMM_MMWORD [rdi], xmmA
+        add     rdi, byte SIZEOF_MMWORD
+        sub     rcx, byte SIZEOF_MMWORD
+        psrldq  xmmA, SIZEOF_MMWORD
+.column_st7:
+        ; Store the lower 4 bytes of xmmA to the output when it has enough
+        ; space.
+        cmp     rcx, byte SIZEOF_DWORD
+        jb      short .column_st3
+        movd    XMM_DWORD [rdi], xmmA
+        add     rdi, byte SIZEOF_DWORD
+        sub     rcx, byte SIZEOF_DWORD
+        psrldq  xmmA, SIZEOF_DWORD
+.column_st3:
+        ; Store the lower 2 bytes of rax to the output when it has enough
+        ; space.
+        movd    eax, xmmA
+        cmp     rcx, byte SIZEOF_WORD
+        jb      short .column_st1
+        mov     WORD [rdi], ax
+        add     rdi, byte SIZEOF_WORD
+        sub     rcx, byte SIZEOF_WORD
+        shr     rax, 16
+.column_st1:
+        ; Store the lower 1 byte of rax to the output when it has enough
+        ; space.
+        test    rcx, rcx
+        jz      short .nextrow
+        mov     BYTE [rdi], al
+
+%else ; RGB_PIXELSIZE == 4 ; -----------
+
+%ifdef RGBX_FILLER_0XFF
+        pcmpeqb   xmm6,xmm6             ; xmm6=XE=X(02468ACE********)
+        pcmpeqb   xmm7,xmm7             ; xmm7=XO=X(13579BDF********)
+%else
+        pxor      xmm6,xmm6             ; xmm6=XE=X(02468ACE********)
+        pxor      xmm7,xmm7             ; xmm7=XO=X(13579BDF********)
+%endif
+        ; xmmA=(00 02 04 06 08 0A 0C 0E **), xmmB=(01 03 05 07 09 0B 0D 0F **)
+        ; xmmC=(10 12 14 16 18 1A 1C 1E **), xmmD=(11 13 15 17 19 1B 1D 1F **)
+        ; xmmE=(20 22 24 26 28 2A 2C 2E **), xmmF=(21 23 25 27 29 2B 2D 2F **)
+        ; xmmG=(30 32 34 36 38 3A 3C 3E **), xmmH=(31 33 35 37 39 3B 3D 3F **)
+
+        punpcklbw xmmA,xmmC     ; xmmA=(00 10 02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E)
+        punpcklbw xmmE,xmmG     ; xmmE=(20 30 22 32 24 34 26 36 28 38 2A 3A 2C 3C 2E 3E)
+        punpcklbw xmmB,xmmD     ; xmmB=(01 11 03 13 05 15 07 17 09 19 0B 1B 0D 1D 0F 1F)
+        punpcklbw xmmF,xmmH     ; xmmF=(21 31 23 33 25 35 27 37 29 39 2B 3B 2D 3D 2F 3F)
+
+        movdqa    xmmC,xmmA
+        punpcklwd xmmA,xmmE     ; xmmA=(00 10 20 30 02 12 22 32 04 14 24 34 06 16 26 36)
+        punpckhwd xmmC,xmmE     ; xmmC=(08 18 28 38 0A 1A 2A 3A 0C 1C 2C 3C 0E 1E 2E 3E)
+        movdqa    xmmG,xmmB
+        punpcklwd xmmB,xmmF     ; xmmB=(01 11 21 31 03 13 23 33 05 15 25 35 07 17 27 37)
+        punpckhwd xmmG,xmmF     ; xmmG=(09 19 29 39 0B 1B 2B 3B 0D 1D 2D 3D 0F 1F 2F 3F)
+
+        movdqa    xmmD,xmmA
+        punpckldq xmmA,xmmB     ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33)
+        punpckhdq xmmD,xmmB     ; xmmD=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37)
+        movdqa    xmmH,xmmC
+        punpckldq xmmC,xmmG     ; xmmC=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B)
+        punpckhdq xmmH,xmmG     ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F)
+
+        cmp     rcx, byte SIZEOF_XMMWORD
+        jb      short .column_st32
+
+        test    rdi, SIZEOF_XMMWORD-1
+        jnz     short .out1
+        ; --(aligned)-------------------
+        movntdq XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        movntdq XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
+        movntdq XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmC
+        movntdq XMMWORD [rdi+3*SIZEOF_XMMWORD], xmmH
+        jmp     short .out0
+.out1:  ; --(unaligned)-----------------
+        movdqu  XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        movdqu  XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
+        movdqu  XMMWORD [rdi+2*SIZEOF_XMMWORD], xmmC
+        movdqu  XMMWORD [rdi+3*SIZEOF_XMMWORD], xmmH
+.out0:
+        add     rdi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD  ; outptr
+        sub     rcx, byte SIZEOF_XMMWORD
+        jz      near .nextrow
+
+        add     rsi, byte SIZEOF_XMMWORD        ; inptr0
+        add     rbx, byte SIZEOF_XMMWORD        ; inptr1
+        add     rdx, byte SIZEOF_XMMWORD        ; inptr2
+        jmp     near .columnloop
+
+.column_st32:
+        cmp     rcx, byte SIZEOF_XMMWORD/2
+        jb      short .column_st16
+        movdqu  XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        movdqu  XMMWORD [rdi+1*SIZEOF_XMMWORD], xmmD
+        add     rdi, byte 2*SIZEOF_XMMWORD      ; outptr
+        movdqa  xmmA,xmmC
+        movdqa  xmmD,xmmH
+        sub     rcx, byte SIZEOF_XMMWORD/2
+.column_st16:
+        cmp     rcx, byte SIZEOF_XMMWORD/4
+        jb      short .column_st15
+        movdqu  XMMWORD [rdi+0*SIZEOF_XMMWORD], xmmA
+        add     rdi, byte SIZEOF_XMMWORD        ; outptr
+        movdqa  xmmA,xmmD
+        sub     rcx, byte SIZEOF_XMMWORD/4
+.column_st15:
+        ; Store two pixels (8 bytes) of xmmA to the output when it has enough
+        ; space.
+        cmp     rcx, byte SIZEOF_XMMWORD/8
+        jb      short .column_st7
+        movq    MMWORD [rdi], xmmA
+        add     rdi, byte SIZEOF_XMMWORD/8*4
+        sub     rcx, byte SIZEOF_XMMWORD/8
+        psrldq  xmmA, SIZEOF_XMMWORD/8*4
+.column_st7:
+        ; Store one pixel (4 bytes) of xmmA to the output when it has enough
+        ; space.
+        test    rcx, rcx
+        jz      short .nextrow
+        movd    XMM_DWORD [rdi], xmmA
+
+%endif ; RGB_PIXELSIZE ; ---------------
+
+.nextrow:
+        pop     rcx
+        pop     rsi
+        pop     rbx
+        pop     rdx
+        pop     rdi
+        pop     rax
+
+        add     rsi, byte SIZEOF_JSAMPROW
+        add     rbx, byte SIZEOF_JSAMPROW
+        add     rdx, byte SIZEOF_JSAMPROW
+        add     rdi, byte SIZEOF_JSAMPROW       ; output_buf
+        dec     rax                             ; num_rows
+        jg      near .rowloop
+
+        sfence          ; flush the write buffer
+
+.return:
+        pop     rbx
+        uncollect_args
+        mov     rsp,rbp         ; rsp <- aligned rbp
+        pop     rsp             ; rsp <- original rbp
+        pop     rbp
+        ret
+
+; For some reason, the OS X linker does not honor the request to align the
+; segment unless we do this.
+        align   16