ref: da7c5beded832b43231ebe961bcfa5afccd4d3cf
dir: /vp8/encoder/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" SECTION .text ;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