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- ;
- ; 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
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