;
;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
;
;  Use of this source code is governed by a BSD-style license
;  that can be found in the LICENSE file in the root of the source
;  tree. An additional intellectual property rights grant can be found
;  in the file PATENTS.  All contributing project authors may
;  be found in the AUTHORS file in the root of the source tree.
;


%include "vpx_ports/x86_abi_support.asm"

SECTION .text

;void copy_mem16x16_sse2(
;    unsigned char *src,
;    int src_stride,
;    unsigned char *dst,
;    int dst_stride
;    )
globalsym(vp8_copy_mem16x16_sse2)
sym(vp8_copy_mem16x16_sse2):
    push        rbp
    mov         rbp, rsp
    SHADOW_ARGS_TO_STACK 4
    push        rsi
    push        rdi
    ; end prolog

        mov         rsi,        arg(0) ;src;
        movdqu      xmm0,       [rsi]

        movsxd      rax,        dword ptr arg(1) ;src_stride;
        mov         rdi,        arg(2) ;dst;

        movdqu      xmm1,       [rsi+rax]
        movdqu      xmm2,       [rsi+rax*2]

        movsxd      rcx,        dword ptr arg(3) ;dst_stride
        lea         rsi,        [rsi+rax*2]

        movdqa      [rdi],      xmm0
        add         rsi,        rax

        movdqa      [rdi+rcx],  xmm1
        movdqa      [rdi+rcx*2],xmm2

        lea         rdi,        [rdi+rcx*2]
        movdqu      xmm3,       [rsi]

        add         rdi,        rcx
        movdqu      xmm4,       [rsi+rax]

        movdqu      xmm5,       [rsi+rax*2]
        lea         rsi,        [rsi+rax*2]

        movdqa      [rdi],  xmm3
        add         rsi,        rax

        movdqa      [rdi+rcx],  xmm4
        movdqa      [rdi+rcx*2],xmm5

        lea         rdi,        [rdi+rcx*2]
        movdqu      xmm0,       [rsi]

        add         rdi,        rcx
        movdqu      xmm1,       [rsi+rax]

        movdqu      xmm2,       [rsi+rax*2]
        lea         rsi,        [rsi+rax*2]

        movdqa      [rdi],      xmm0
        add         rsi,        rax

        movdqa      [rdi+rcx],  xmm1

        movdqa      [rdi+rcx*2],    xmm2
        movdqu      xmm3,       [rsi]

        movdqu      xmm4,       [rsi+rax]
        lea         rdi,        [rdi+rcx*2]

        add         rdi,        rcx
        movdqu      xmm5,       [rsi+rax*2]

        lea         rsi,        [rsi+rax*2]
        movdqa      [rdi],  xmm3

        add         rsi,        rax
        movdqa      [rdi+rcx],  xmm4

        movdqa      [rdi+rcx*2],xmm5
        movdqu      xmm0,       [rsi]

        lea         rdi,        [rdi+rcx*2]
        movdqu      xmm1,       [rsi+rax]

        add         rdi,        rcx
        movdqu      xmm2,       [rsi+rax*2]

        lea         rsi,        [rsi+rax*2]
        movdqa      [rdi],      xmm0

        movdqa      [rdi+rcx],  xmm1
        movdqa      [rdi+rcx*2],xmm2

        movdqu      xmm3,       [rsi+rax]
        lea         rdi,        [rdi+rcx*2]

        movdqa      [rdi+rcx],  xmm3

    ; begin epilog
    pop rdi
    pop rsi
    UNSHADOW_ARGS
    pop         rbp
    ret