1eda14cbcSMatt Macy /* 2eda14cbcSMatt Macy * CDDL HEADER START 3eda14cbcSMatt Macy * 4eda14cbcSMatt Macy * The contents of this file are subject to the terms of the 5eda14cbcSMatt Macy * Common Development and Distribution License (the "License"). 6eda14cbcSMatt Macy * You may not use this file except in compliance with the License. 7eda14cbcSMatt Macy * 8eda14cbcSMatt Macy * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*271171e0SMartin Matuska * or https://opensource.org/licenses/CDDL-1.0. 10eda14cbcSMatt Macy * See the License for the specific language governing permissions 11eda14cbcSMatt Macy * and limitations under the License. 12eda14cbcSMatt Macy * 13eda14cbcSMatt Macy * When distributing Covered Code, include this CDDL HEADER in each 14eda14cbcSMatt Macy * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15eda14cbcSMatt Macy * If applicable, add the following below this CDDL HEADER, with the 16eda14cbcSMatt Macy * fields enclosed by brackets "[]" replaced with your own identifying 17eda14cbcSMatt Macy * information: Portions Copyright [yyyy] [name of copyright owner] 18eda14cbcSMatt Macy * 19eda14cbcSMatt Macy * CDDL HEADER END 20eda14cbcSMatt Macy */ 21eda14cbcSMatt Macy /* 22eda14cbcSMatt Macy * This header file distributed under the terms of the CDDL. 23eda14cbcSMatt Macy * Portions Copyright 2008 Sun Microsystems, Inc. All Rights reserved. 24eda14cbcSMatt Macy */ 25eda14cbcSMatt Macy #ifndef _SYS_STACK_H 26eda14cbcSMatt Macy #define _SYS_STACK_H 27eda14cbcSMatt Macy 28eda14cbcSMatt Macy #include <pthread.h> 29eda14cbcSMatt Macy 30eda14cbcSMatt Macy #define STACK_BIAS 0 31eda14cbcSMatt Macy 32eda14cbcSMatt Macy #ifdef __USE_GNU 33eda14cbcSMatt Macy 34eda14cbcSMatt Macy static inline int stack_getbounds(stack_t * sp)35eda14cbcSMatt Macystack_getbounds(stack_t *sp) 36eda14cbcSMatt Macy { 37eda14cbcSMatt Macy pthread_attr_t attr; 38eda14cbcSMatt Macy int rc; 39eda14cbcSMatt Macy 40eda14cbcSMatt Macy rc = pthread_getattr_np(pthread_self(), &attr); 41eda14cbcSMatt Macy if (rc) 42eda14cbcSMatt Macy return (rc); 43eda14cbcSMatt Macy 44eda14cbcSMatt Macy rc = pthread_attr_getstack(&attr, &sp->ss_sp, &sp->ss_size); 45eda14cbcSMatt Macy if (rc == 0) 46eda14cbcSMatt Macy sp->ss_flags = 0; 47eda14cbcSMatt Macy 48eda14cbcSMatt Macy pthread_attr_destroy(&attr); 49eda14cbcSMatt Macy 50eda14cbcSMatt Macy return (rc); 51eda14cbcSMatt Macy } 52eda14cbcSMatt Macy 53eda14cbcSMatt Macy static inline int thr_stksegment(stack_t * sp)54eda14cbcSMatt Macythr_stksegment(stack_t *sp) 55eda14cbcSMatt Macy { 56eda14cbcSMatt Macy int rc; 57eda14cbcSMatt Macy 58eda14cbcSMatt Macy rc = stack_getbounds(sp); 59eda14cbcSMatt Macy if (rc) 60eda14cbcSMatt Macy return (rc); 61eda14cbcSMatt Macy 62eda14cbcSMatt Macy /* 63eda14cbcSMatt Macy * thr_stksegment() is expected to set sp.ss_sp to the high stack 64eda14cbcSMatt Macy * address, but the stack_getbounds() interface is expected to 65eda14cbcSMatt Macy * set sp.ss_sp to the low address. Adjust accordingly. 66eda14cbcSMatt Macy */ 67eda14cbcSMatt Macy sp->ss_sp = (void *)(((uintptr_t)sp->ss_sp) + sp->ss_size); 68eda14cbcSMatt Macy sp->ss_flags = 0; 69eda14cbcSMatt Macy 70eda14cbcSMatt Macy return (rc); 71eda14cbcSMatt Macy } 72eda14cbcSMatt Macy 73eda14cbcSMatt Macy #endif /* __USE_GNU */ 74eda14cbcSMatt Macy #endif /* _SYS_STACK_H */ 75