1 /*- 2 * Copyright (c) 2018 Instituto de Pesquisas Eldorado 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of its contributors may 14 * be used to endorse or promote products derived from this software 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 #include <machine/cpu.h> 31 #include <machine/ifunc.h> 32 33 #define _CAT(a,b) a##b 34 #define CAT(a,b) _CAT(a,b) 35 #define CAT3(a,b,c) CAT(CAT(a,b),c) 36 37 #ifdef MEMCOPY 38 #define FN_NAME memcpy 39 #define FN_RET void * 40 #define FN_PARAMS (void *dst, const void *src, size_t len) 41 42 #elif defined(MEMMOVE) 43 #define FN_NAME memmove 44 #define FN_RET void * 45 #define FN_PARAMS (void *dst, const void *src, size_t len) 46 47 #else 48 #define FN_NAME bcopy 49 #define FN_RET void 50 #define FN_PARAMS (const void *src, void *dst, size_t len) 51 #endif 52 53 #define FN_NAME_NOVSX CAT(__, FN_NAME) 54 #define FN_NAME_VSX CAT3(__, FN_NAME, _vsx) 55 56 FN_RET FN_NAME_NOVSX FN_PARAMS; 57 FN_RET FN_NAME_VSX FN_PARAMS; 58 59 DEFINE_UIFUNC(, FN_RET, FN_NAME, FN_PARAMS) 60 { 61 /* VSX instructions were added in POWER ISA 2.06, 62 * however it requires data to be word-aligned. 63 * Since POWER ISA 2.07B this is solved transparently 64 * by the hardware 65 */ 66 if (cpu_features & PPC_FEATURE_HAS_VSX) 67 return (FN_NAME_VSX); 68 else 69 return (FN_NAME_NOVSX); 70 } 71