getisax.c revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "lint.h"
extern long ___getauxval(int type);
/*
* Return the 'hwcap' vector of bits in the AT_SUN_HWCAP aux vector entry.
*
* At this time, the worst-case implementation only uses 13 bits, but for
* future-proofing, we allow the interface to describe an arbitrary length
* array of 32-bit words.
*
* As a convenience, the routine returns the maximum number of array alements
* that may contain non-zero values.
*/
{
int i;
static uint32_t auxv_hwcap;
if (auxv_hwcap == 0)
if (n > 0) {
if (n >= 1)
array[0] = auxv_hwcap;
for (i = 1; i < n; i++)
array[i] = 0;
}
return (auxv_hwcap == 0 ? 0 : 1);
}