1*eda14cbcSMatt Macy /* 2*eda14cbcSMatt Macy * CDDL HEADER START 3*eda14cbcSMatt Macy * 4*eda14cbcSMatt Macy * The contents of this file are subject to the terms of the 5*eda14cbcSMatt Macy * Common Development and Distribution License (the "License"). 6*eda14cbcSMatt Macy * You may not use this file except in compliance with the License. 7*eda14cbcSMatt Macy * 8*eda14cbcSMatt Macy * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*eda14cbcSMatt Macy * or http://www.opensolaris.org/os/licensing. 10*eda14cbcSMatt Macy * See the License for the specific language governing permissions 11*eda14cbcSMatt Macy * and limitations under the License. 12*eda14cbcSMatt Macy * 13*eda14cbcSMatt Macy * When distributing Covered Code, include this CDDL HEADER in each 14*eda14cbcSMatt Macy * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*eda14cbcSMatt Macy * If applicable, add the following below this CDDL HEADER, with the 16*eda14cbcSMatt Macy * fields enclosed by brackets "[]" replaced with your own identifying 17*eda14cbcSMatt Macy * information: Portions Copyright [yyyy] [name of copyright owner] 18*eda14cbcSMatt Macy * 19*eda14cbcSMatt Macy * CDDL HEADER END 20*eda14cbcSMatt Macy */ 21*eda14cbcSMatt Macy /* 22*eda14cbcSMatt Macy * This header file distributed under the terms of the CDDL. 23*eda14cbcSMatt Macy * Portions Copyright 2008 Sun Microsystems, Inc. All Rights reserved. 24*eda14cbcSMatt Macy */ 25*eda14cbcSMatt Macy #ifndef _SYS_STACK_H 26*eda14cbcSMatt Macy #define _SYS_STACK_H 27*eda14cbcSMatt Macy 28*eda14cbcSMatt Macy #include <pthread.h> 29*eda14cbcSMatt Macy 30*eda14cbcSMatt Macy #define STACK_BIAS 0 31*eda14cbcSMatt Macy 32*eda14cbcSMatt Macy #ifdef __USE_GNU 33*eda14cbcSMatt Macy 34*eda14cbcSMatt Macy static inline int 35*eda14cbcSMatt Macy stack_getbounds(stack_t *sp) 36*eda14cbcSMatt Macy { 37*eda14cbcSMatt Macy pthread_attr_t attr; 38*eda14cbcSMatt Macy int rc; 39*eda14cbcSMatt Macy 40*eda14cbcSMatt Macy rc = pthread_getattr_np(pthread_self(), &attr); 41*eda14cbcSMatt Macy if (rc) 42*eda14cbcSMatt Macy return (rc); 43*eda14cbcSMatt Macy 44*eda14cbcSMatt Macy rc = pthread_attr_getstack(&attr, &sp->ss_sp, &sp->ss_size); 45*eda14cbcSMatt Macy if (rc == 0) 46*eda14cbcSMatt Macy sp->ss_flags = 0; 47*eda14cbcSMatt Macy 48*eda14cbcSMatt Macy pthread_attr_destroy(&attr); 49*eda14cbcSMatt Macy 50*eda14cbcSMatt Macy return (rc); 51*eda14cbcSMatt Macy } 52*eda14cbcSMatt Macy 53*eda14cbcSMatt Macy static inline int 54*eda14cbcSMatt Macy thr_stksegment(stack_t *sp) 55*eda14cbcSMatt Macy { 56*eda14cbcSMatt Macy int rc; 57*eda14cbcSMatt Macy 58*eda14cbcSMatt Macy rc = stack_getbounds(sp); 59*eda14cbcSMatt Macy if (rc) 60*eda14cbcSMatt Macy return (rc); 61*eda14cbcSMatt Macy 62*eda14cbcSMatt Macy /* 63*eda14cbcSMatt Macy * thr_stksegment() is expected to set sp.ss_sp to the high stack 64*eda14cbcSMatt Macy * address, but the stack_getbounds() interface is expected to 65*eda14cbcSMatt Macy * set sp.ss_sp to the low address. Adjust accordingly. 66*eda14cbcSMatt Macy */ 67*eda14cbcSMatt Macy sp->ss_sp = (void *)(((uintptr_t)sp->ss_sp) + sp->ss_size); 68*eda14cbcSMatt Macy sp->ss_flags = 0; 69*eda14cbcSMatt Macy 70*eda14cbcSMatt Macy return (rc); 71*eda14cbcSMatt Macy } 72*eda14cbcSMatt Macy 73*eda14cbcSMatt Macy #endif /* __USE_GNU */ 74*eda14cbcSMatt Macy #endif /* _SYS_STACK_H */ 75