1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /*LINTLIBRARY*/ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma weak getisax = _getisax 32*0Sstevel@tonic-gate #include "synonyms.h" 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #include <sys/types.h> 35*0Sstevel@tonic-gate #include <sys/auxv.h> 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate extern long ___getauxval(int type); 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate /* 40*0Sstevel@tonic-gate * Return the 'hwcap' vector of bits in the AT_SUN_HWCAP aux vector entry. 41*0Sstevel@tonic-gate * 42*0Sstevel@tonic-gate * At this time, the worst-case implementation only uses 13 bits, but for 43*0Sstevel@tonic-gate * future-proofing, we allow the interface to describe an arbitrary length 44*0Sstevel@tonic-gate * array of 32-bit words. 45*0Sstevel@tonic-gate * 46*0Sstevel@tonic-gate * As a convenience, the routine returns the maximum number of array alements 47*0Sstevel@tonic-gate * that may contain non-zero values. 48*0Sstevel@tonic-gate */ 49*0Sstevel@tonic-gate uint_t 50*0Sstevel@tonic-gate getisax(uint32_t *array, uint_t n) 51*0Sstevel@tonic-gate { 52*0Sstevel@tonic-gate int i; 53*0Sstevel@tonic-gate static uint32_t auxv_hwcap; 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate if (auxv_hwcap == 0) 56*0Sstevel@tonic-gate auxv_hwcap = (uint32_t)___getauxval(AT_SUN_HWCAP); 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate if (n > 0) { 59*0Sstevel@tonic-gate if (n >= 1) 60*0Sstevel@tonic-gate array[0] = auxv_hwcap; 61*0Sstevel@tonic-gate for (i = 1; i < n; i++) 62*0Sstevel@tonic-gate array[i] = 0; 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate return (auxv_hwcap == 0 ? 0 : 1); 65*0Sstevel@tonic-gate } 66