ref: a6bc3dfb0f8e46017d7823985f8383a8dc6cc68b
dir: /vp8/common/x86/copy_sse2.asm/
;
; 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"
;void vp8_copy32xn_sse2(
; unsigned char *src_ptr,
; int src_stride,
; unsigned char *dst_ptr,
; int dst_stride,
; int height);
global sym(vp8_copy32xn_sse2) PRIVATE
sym(vp8_copy32xn_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 5
SAVE_XMM 7
push rsi
push rdi
; end prolog
mov rsi, arg(0) ;src_ptr
mov rdi, arg(2) ;dst_ptr
movsxd rax, dword ptr arg(1) ;src_stride
movsxd rdx, dword ptr arg(3) ;dst_stride
movsxd rcx, dword ptr arg(4) ;height
.block_copy_sse2_loopx4:
movdqu xmm0, XMMWORD PTR [rsi]
movdqu xmm1, XMMWORD PTR [rsi + 16]
movdqu xmm2, XMMWORD PTR [rsi + rax]
movdqu xmm3, XMMWORD PTR [rsi + rax + 16]
lea rsi, [rsi+rax*2]
movdqu xmm4, XMMWORD PTR [rsi]
movdqu xmm5, XMMWORD PTR [rsi + 16]
movdqu xmm6, XMMWORD PTR [rsi + rax]
movdqu xmm7, XMMWORD PTR [rsi + rax + 16]
lea rsi, [rsi+rax*2]
movdqa XMMWORD PTR [rdi], xmm0
movdqa XMMWORD PTR [rdi + 16], xmm1
movdqa XMMWORD PTR [rdi + rdx], xmm2
movdqa XMMWORD PTR [rdi + rdx + 16], xmm3
lea rdi, [rdi+rdx*2]
movdqa XMMWORD PTR [rdi], xmm4
movdqa XMMWORD PTR [rdi + 16], xmm5
movdqa XMMWORD PTR [rdi + rdx], xmm6
movdqa XMMWORD PTR [rdi + rdx + 16], xmm7
lea rdi, [rdi+rdx*2]
sub rcx, 4
cmp rcx, 4
jge .block_copy_sse2_loopx4
cmp rcx, 0
je .copy_is_done
.block_copy_sse2_loop:
movdqu xmm0, XMMWORD PTR [rsi]
movdqu xmm1, XMMWORD PTR [rsi + 16]
lea rsi, [rsi+rax]
movdqa XMMWORD PTR [rdi], xmm0
movdqa XMMWORD PTR [rdi + 16], xmm1
lea rdi, [rdi+rdx]
sub rcx, 1
jne .block_copy_sse2_loop
.copy_is_done:
; begin epilog
pop rdi
pop rsi
RESTORE_XMM
UNSHADOW_ARGS
pop rbp
ret