Libc-262.2.12.tar.gz

[apple/libc.git] / ppc / pthreads / init_cpu_capabilities.c

/*
 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

/* Initialize the "_cpu_capabilities" vector on PowerPC processors. */

#define	__APPLE_API_PRIVATE
#include <machine/cpu_capabilities.h>
#undef	__APPLE_API_PRIVATE

int _cpu_has_altivec = 0;		// DEPRECATED: use _cpu_capabilities instead
int _cpu_capabilities = 0;

__private_extern__ void
_init_cpu_capabilities( void )
{
    _cpu_capabilities = *(int*) _COMM_PAGE_CPU_CAPABILITIES;	// pull out of commpage
    
    _cpu_has_altivec = (_cpu_capabilities & kHasAltivec) ? 1 : 0;
}