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* 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
* 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]
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
* Copyright 2014 Garrett D'Amore <>
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
#ifndef _UCONTEXT_H
#define _UCONTEXT_H
#include <sys/ucontext.h>
* The file sys/regset.h defines indices in the gregset_t array,
* such as EIP on i386. Those defines were historically exposed
* via sys/ucontext.h, sys/signal.h, etc. which caused surprises
* due to those defines unexpectedly polluting the namespace.
* On the other hand, several existing applications assume that
* the regset names are defined after an include <ucontext.h>.
* To solve both problems at once: <ucontext.h> (this file)
* DOES include sys/regset.h for you but <sys/ucontext.h>
* does NOT include sys/regset.h anymore.
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
#include <sys/regset.h>
#include <sys/siginfo.h>
#ifdef __cplusplus
extern "C" {
#ifdef __sparc
#pragma redefine_extname makecontext __makecontext_v2
#define makecontext __makecontext_v2
extern int getcontext(ucontext_t *) __RETURNS_TWICE;
#pragma unknown_control_flow(getcontext)
extern int setcontext(const ucontext_t *) __NORETURN;
extern int swapcontext(ucontext_t *_RESTRICT_KYWD,
const ucontext_t *_RESTRICT_KYWD);
extern void makecontext(ucontext_t *, void(*)(), int, ...);
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
extern int walkcontext(const ucontext_t *, int (*)(uintptr_t, int, void *),
void *);
extern int printstack(int);
extern int addrtosymstr(void *, char *, int);
extern int getustack(stack_t **);
extern int setustack(stack_t *);
extern int stack_getbounds(stack_t *);
extern int stack_setbounds(const stack_t *);
extern int stack_inbounds(void *);
extern int stack_violation(int, const siginfo_t *, const ucontext_t *);
extern void *_stack_grow(void *);
#endif /* !_XPG4_2 || __EXTENSIONS__ */
#ifdef __cplusplus
#endif /* _UCONTEXT_H */