id32.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/sysmacros.h>
#include <vm/seg_kmem.h>
static vmem_t *id32_arena;
static kmem_cache_t *id32_cache;
#define ID32_BITS 5
#if defined(__amd64)
/*
* For amd64 the 32 bit id is the offset of the entry in the arena.
*/
extern char *heap_core_base;
#else /* __amd64 */
/*
* All other architectures use the 32 bit pointer value for the 32 bit id.
*/
#endif /* __amd64 */
void
id32_init(void)
{
}
/*
* Return a 32-bit identifier for the specified pointer.
*/
{
return (0);
}
/*
* Free a 32-bit ID.
*/
void
{
if (!ID32_VALID(id)) {
return;
}
}
/*
* Return the pointer described by a 32-bit ID, or NULL if the ID is bad.
*/
void *
{
if (!ID32_VALID(id)) {
return (NULL);
}
}