ref: bd8d97dddbb2a86e506d060788cd662ded2a2aa4
dir: /codec/encoder/core/x86/memzero.asm/
;*! ;* \copy ;* Copyright (c) 2009-2013, Cisco Systems ;* All rights reserved. ;* ;* Redistribution and use in source and binary forms, with or without ;* modification, are permitted provided that the following conditions ;* are met: ;* ;* * Redistributions of source code must retain the above copyright ;* notice, this list of conditions and the following disclaimer. ;* ;* * Redistributions in binary form must reproduce the above copyright ;* notice, this list of conditions and the following disclaimer in ;* the documentation and/or other materials provided with the ;* distribution. ;* ;* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ;* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ;* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS ;* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ;* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, ;* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, ;* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; ;* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER ;* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ;* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ;* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ;* POSSIBILITY OF SUCH DAMAGE. ;* ;* ;* memzero.asm ;* ;* Abstract ;* ;* ;* History ;* 9/16/2009 Created ;* ;* ;*************************************************************************/ %include "asm_inc.asm" ;*********************************************************************** ; Code ;*********************************************************************** SECTION .text ;*********************************************************************** ;void WelsPrefetchZero_mmx(int8_t const*_A); ;*********************************************************************** WELS_EXTERN WelsPrefetchZero_mmx %assign push_num 0 LOAD_1_PARA prefetchnta [r0] ret ;*********************************************************************** ; void WelsSetMemZeroAligned64_sse2(void *dst, int32_t size) ;*********************************************************************** WELS_EXTERN WelsSetMemZeroAligned64_sse2 %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d neg r1 pxor xmm0, xmm0 .memzeroa64_sse2_loops: movdqa [r0], xmm0 movdqa [r0+16], xmm0 movdqa [r0+32], xmm0 movdqa [r0+48], xmm0 add r0, 0x40 add r1, 0x40 jnz near .memzeroa64_sse2_loops ret ;*********************************************************************** ; void WelsSetMemZeroSize64_mmx(void *dst, int32_t size) ;*********************************************************************** WELS_EXTERN WelsSetMemZeroSize64_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d neg r1 pxor mm0, mm0 .memzero64_mmx_loops: movq [r0], mm0 movq [r0+8], mm0 movq [r0+16], mm0 movq [r0+24], mm0 movq [r0+32], mm0 movq [r0+40], mm0 movq [r0+48], mm0 movq [r0+56], mm0 add r0, 0x40 add r1, 0x40 jnz near .memzero64_mmx_loops WELSEMMS ret ;*********************************************************************** ; void WelsSetMemZeroSize8_mmx(void *dst, int32_t size) ;*********************************************************************** WELS_EXTERN WelsSetMemZeroSize8_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d neg r1 pxor mm0, mm0 .memzero8_mmx_loops: movq [r0], mm0 add r0, 0x08 add r1, 0x08 jnz near .memzero8_mmx_loops WELSEMMS ret