| /* |
| * 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 |
| * or http://www.opensolaris.org/os/licensing. |
| * 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 |
| */ |
| /* |
| * This header file distributed under the terms of the CDDL. |
| * Portions Copyright 2008 Sun Microsystems, Inc. All Rights reserved. |
| */ |
| #ifndef _SYS_STACK_H |
| #define _SYS_STACK_H |
| |
| #include <pthread.h> |
| |
| #define STACK_BIAS 0 |
| |
| #ifdef __USE_GNU |
| |
| static inline int |
| stack_getbounds(stack_t *sp) |
| { |
| pthread_attr_t attr; |
| int rc; |
| |
| rc = pthread_getattr_np(pthread_self(), &attr); |
| if (rc) |
| return (rc); |
| |
| rc = pthread_attr_getstack(&attr, &sp->ss_sp, &sp->ss_size); |
| if (rc == 0) |
| sp->ss_flags = 0; |
| |
| pthread_attr_destroy(&attr); |
| |
| return (rc); |
| } |
| |
| static inline int |
| thr_stksegment(stack_t *sp) |
| { |
| int rc; |
| |
| rc = stack_getbounds(sp); |
| if (rc) |
| return (rc); |
| |
| /* |
| * thr_stksegment() is expected to set sp.ss_sp to the high stack |
| * address, but the stack_getbounds() interface is expected to |
| * set sp.ss_sp to the low address. Adjust accordingly. |
| */ |
| sp->ss_sp = (void *)(((uintptr_t)sp->ss_sp) + sp->ss_size); |
| sp->ss_flags = 0; |
| |
| return (rc); |
| } |
| |
| #endif /* __USE_GNU */ |
| #endif /* _SYS_STACK_H */ |