68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include "PHY/sse_intrin.h"
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void Zero_Buffer(void *buf,unsigned int length)
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{
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// zeroes the mmx_t buffer 'buf' starting from buf[0] to buf[length-1] in bytes
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int i;
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register __m64 mm0;
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__m64 *mbuf = (__m64 *)buf;
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// length>>=3; // put length in quadwords
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mm0 = _m_pxor(mm0,mm0); // clear the register
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for(i=0; i<length>>3; i++) // for each i
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mbuf[i] = mm0; // put 0 in buf[i]
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_mm_empty();
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}
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void mmxcopy(void *dest,void *src,int size)
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{
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// copy size bytes from src to dest
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register int i;
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register __m64 mm0;
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__m64 *mmsrc = (__m64 *)src, *mmdest= (__m64 *)dest;
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for (i=0; i<size>>3; i++) {
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mm0 = mmsrc[i];
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mmdest[i] = mm0;
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}
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_mm_empty();
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}
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void Zero_Buffer_nommx(void *buf,unsigned int length)
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{
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int i;
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for (i=0; i<length>>2; i++)
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((int *)buf)[i] = 0;
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}
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