256 lines
6.3 KiB
C
256 lines
6.3 KiB
C
/* FreeRDP: A Remote Desktop Protocol Client
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* Optimized routines to set a chunk of memory to a constant.
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* vi:ts=4 sw=4:
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*
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* (c) Copyright 2012 Hewlett-Packard Development Company, L.P.
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License. You may obtain
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* a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
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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
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* or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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*/
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#include <freerdp/config.h>
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#include <string.h>
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#include <freerdp/types.h>
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#include <freerdp/primitives.h>
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#include <winpr/sysinfo.h>
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#ifdef WITH_SSE2
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#include <emmintrin.h>
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#endif /* WITH_SSE2 */
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#ifdef WITH_IPP
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#include <ipps.h>
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#endif /* WITH_IPP */
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#include "prim_internal.h"
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static primitives_t* generic = NULL;
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/* ========================================================================= */
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#ifdef WITH_SSE2
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#if !defined(WITH_IPP) || defined(ALL_PRIMITIVES_VERSIONS)
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static pstatus_t sse2_set_8u(BYTE val, BYTE* WINPR_RESTRICT pDst, UINT32 len)
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{
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BYTE byte, *dptr;
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__m128i xmm0;
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size_t count;
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if (len < 16)
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return generic->set_8u(val, pDst, len);
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byte = val;
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dptr = (BYTE*)pDst;
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/* Seek 16-byte alignment. */
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while ((ULONG_PTR)dptr & 0x0f)
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{
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*dptr++ = byte;
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if (--len == 0)
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return PRIMITIVES_SUCCESS;
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}
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xmm0 = _mm_set1_epi8(byte);
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/* Cover 256-byte chunks via SSE register stores. */
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count = len >> 8;
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len -= count << 8;
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/* Do 256-byte chunks using one XMM register. */
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while (count--)
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{
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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}
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/* Cover 16-byte chunks via SSE register stores. */
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count = len >> 4;
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len -= count << 4;
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/* Do 16-byte chunks using one XMM register. */
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while (count--)
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{
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 16;
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}
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/* Do leftover bytes. */
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while (len--)
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*dptr++ = byte;
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return PRIMITIVES_SUCCESS;
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}
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#endif /* !defined(WITH_IPP) || defined(ALL_PRIMITIVES_VERSIONS) */
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#endif /* WITH_SSE2 */
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/* ------------------------------------------------------------------------- */
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#ifdef WITH_SSE2
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#if !defined(WITH_IPP) || defined(ALL_PRIMITIVES_VERSIONS)
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static pstatus_t sse2_set_32u(UINT32 val, UINT32* WINPR_RESTRICT pDst, UINT32 len)
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{
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const primitives_t* prim = primitives_get_generic();
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UINT32* dptr = (UINT32*)pDst;
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__m128i xmm0;
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size_t count;
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/* If really short, just do it here. */
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if (len < 32)
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{
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while (len--)
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*dptr++ = val;
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return PRIMITIVES_SUCCESS;
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}
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/* Assure we can reach 16-byte alignment. */
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if (((ULONG_PTR)dptr & 0x03) != 0)
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{
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return prim->set_32u(val, pDst, len);
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}
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/* Seek 16-byte alignment. */
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while ((ULONG_PTR)dptr & 0x0f)
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{
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*dptr++ = val;
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if (--len == 0)
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return PRIMITIVES_SUCCESS;
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}
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xmm0 = _mm_set1_epi32(val);
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/* Cover 256-byte chunks via SSE register stores. */
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count = len >> 6;
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len -= count << 6;
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/* Do 256-byte chunks using one XMM register. */
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while (count--)
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{
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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}
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/* Cover 16-byte chunks via SSE register stores. */
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count = len >> 2;
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len -= count << 2;
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/* Do 16-byte chunks using one XMM register. */
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while (count--)
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{
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_mm_store_si128((__m128i*)dptr, xmm0);
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dptr += 4;
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}
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/* Do leftover bytes. */
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while (len--)
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*dptr++ = val;
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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static pstatus_t sse2_set_32s(INT32 val, INT32* WINPR_RESTRICT pDst, UINT32 len)
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{
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UINT32 uval = *((UINT32*)&val);
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return sse2_set_32u(uval, (UINT32*)pDst, len);
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}
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#endif /* !defined(WITH_IPP) || defined(ALL_PRIMITIVES_VERSIONS) */
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#endif /* WITH_SSE2 */
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#ifdef WITH_IPP
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/* ------------------------------------------------------------------------- */
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static pstatus_t ipp_wrapper_set_32u(UINT32 val, UINT32* WINPR_RESTRICT pDst, INT32 len)
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{
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/* A little type conversion, then use the signed version. */
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INT32 sval = *((INT32*)&val);
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return ippsSet_32s(sval, (INT32*)pDst, len);
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}
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#endif
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/* ------------------------------------------------------------------------- */
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void primitives_init_set_opt(primitives_t* WINPR_RESTRICT prims)
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{
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generic = primitives_get_generic();
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primitives_init_set(prims);
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/* Pick tuned versions if possible. */
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#ifdef WITH_IPP
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prims->set_8u = (__set_8u_t)ippsSet_8u;
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prims->set_32s = (__set_32s_t)ippsSet_32s;
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prims->set_32u = (__set_32u_t)ipp_wrapper_set_32u;
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prims->zero = (__zero_t)ippsZero_8u;
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#elif defined(WITH_SSE2)
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if (IsProcessorFeaturePresent(PF_SSE2_INSTRUCTIONS_AVAILABLE))
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{
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prims->set_8u = sse2_set_8u;
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prims->set_32s = sse2_set_32s;
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prims->set_32u = sse2_set_32u;
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}
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#endif
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}
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