94 lines
2.9 KiB
NASM
94 lines
2.9 KiB
NASM
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; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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%include "vpx_ports/x86_abi_support.asm"
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;void vp8_copy32xn_sse2(
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; unsigned char *src_ptr,
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; int src_stride,
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; unsigned char *dst_ptr,
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; int dst_stride,
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; int height);
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global sym(vp8_copy32xn_sse2) PRIVATE
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sym(vp8_copy32xn_sse2):
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push rbp
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mov rbp, rsp
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SHADOW_ARGS_TO_STACK 5
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SAVE_XMM 7
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push rsi
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push rdi
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; end prolog
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mov rsi, arg(0) ;src_ptr
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mov rdi, arg(2) ;dst_ptr
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movsxd rax, dword ptr arg(1) ;src_stride
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movsxd rdx, dword ptr arg(3) ;dst_stride
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movsxd rcx, dword ptr arg(4) ;height
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.block_copy_sse2_loopx4:
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movdqu xmm0, XMMWORD PTR [rsi]
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movdqu xmm1, XMMWORD PTR [rsi + 16]
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movdqu xmm2, XMMWORD PTR [rsi + rax]
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movdqu xmm3, XMMWORD PTR [rsi + rax + 16]
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lea rsi, [rsi+rax*2]
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movdqu xmm4, XMMWORD PTR [rsi]
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movdqu xmm5, XMMWORD PTR [rsi + 16]
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movdqu xmm6, XMMWORD PTR [rsi + rax]
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movdqu xmm7, XMMWORD PTR [rsi + rax + 16]
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lea rsi, [rsi+rax*2]
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movdqa XMMWORD PTR [rdi], xmm0
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movdqa XMMWORD PTR [rdi + 16], xmm1
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movdqa XMMWORD PTR [rdi + rdx], xmm2
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movdqa XMMWORD PTR [rdi + rdx + 16], xmm3
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lea rdi, [rdi+rdx*2]
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movdqa XMMWORD PTR [rdi], xmm4
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movdqa XMMWORD PTR [rdi + 16], xmm5
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movdqa XMMWORD PTR [rdi + rdx], xmm6
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movdqa XMMWORD PTR [rdi + rdx + 16], xmm7
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lea rdi, [rdi+rdx*2]
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sub rcx, 4
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cmp rcx, 4
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jge .block_copy_sse2_loopx4
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cmp rcx, 0
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je .copy_is_done
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.block_copy_sse2_loop:
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movdqu xmm0, XMMWORD PTR [rsi]
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movdqu xmm1, XMMWORD PTR [rsi + 16]
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lea rsi, [rsi+rax]
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movdqa XMMWORD PTR [rdi], xmm0
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movdqa XMMWORD PTR [rdi + 16], xmm1
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lea rdi, [rdi+rdx]
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sub rcx, 1
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jne .block_copy_sse2_loop
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.copy_is_done:
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; begin epilog
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pop rdi
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pop rsi
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RESTORE_XMM
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UNSHADOW_ARGS
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pop rbp
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ret
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