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/*
* 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
*/
/*
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ifndef _SYS_UCONTEXT_H
#define _SYS_UCONTEXT_H
#include <sys/feature_tests.h>
#include <sys/types.h>
#include <sys/mcontext.h>
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
#include <sys/signal.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Inclusion of <sys/signal.h> for sigset_t and stack_t definitions
* breaks XPG4v2 namespace. Therefore we must duplicate the defines
* for these types here when _XPG4_2 is defined.
*/
#if defined(_XPG4_2) && !defined(__EXTENSIONS__)
#ifndef _SIGSET_T
#define _SIGSET_T
typedef struct { /* signal set type */
unsigned long __sigbits[4];
} sigset_t;
#endif /* _SIGSET_T */
#ifndef _STACK_T
#define _STACK_T
typedef struct {
void *ss_sp;
size_t ss_size;
int ss_flags;
} stack_t;
#endif /* _STACK_T */
#endif /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
typedef struct ucontext ucontext_t;
#else
typedef struct __ucontext ucontext_t;
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
struct ucontext {
#else
struct __ucontext {
#endif
unsigned long uc_flags;
ucontext_t *uc_link;
sigset_t uc_sigmask;
stack_t uc_stack;
mcontext_t uc_mcontext;
long uc_filler[5]; /* see ABI spec for Intel386 */
};
#if defined(_SYSCALL32)
/* Kernel view of user ILP32 ucontext structure */
typedef struct ucontext32 {
uint32_t uc_flags;
caddr32_t uc_link;
sigset_t uc_sigmask;
stack32_t uc_stack;
mcontext32_t uc_mcontext;
int32_t uc_filler[5];
} ucontext32_t;
#if defined(_KERNEL)
extern void ucontext_nto32(const ucontext_t *src, ucontext32_t *dest);
extern void ucontext_32ton(const ucontext32_t *src, ucontext_t *dest);
#endif
#endif /* _SYSCALL32 */
#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
#define GETCONTEXT 0
#define SETCONTEXT 1
#define GETUSTACK 2
#define SETUSTACK 3
/*
* values for uc_flags
* these are implementation dependent flags, that should be hidden
* from the user interface, defining which elements of ucontext
* are valid, and should be restored on call to setcontext
*/
#define UC_SIGMASK 0x01
#define UC_STACK 0x02
#define UC_CPU 0x04
#define UC_MAU 0x08
#define UC_FPU UC_MAU
#define UC_MCONTEXT (UC_CPU|UC_FPU)
/*
* UC_ALL specifies the default context
*/
#define UC_ALL (UC_SIGMASK|UC_STACK|UC_MCONTEXT)
#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
#ifdef _KERNEL
void savecontext(ucontext_t *, const k_sigset_t *);
void restorecontext(ucontext_t *);
#ifdef _SYSCALL32
extern void savecontext32(ucontext32_t *, const k_sigset_t *);
#endif
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_UCONTEXT_H */
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