xref: /illumos-gate/usr/src/uts/intel/sys/ucontext.h (revision b4203d757c7c247e39c94c09a94021a3a8121062)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5bdf0047cSRoger A. Faulkner  * Common Development and Distribution License (the "License").
6bdf0047cSRoger A. Faulkner  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate 
227c478bd9Sstevel@tonic-gate /*
23bc0e9132SGordon Ross  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
24bc0e9132SGordon Ross  *
25bdf0047cSRoger A. Faulkner  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
267c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
277c478bd9Sstevel@tonic-gate  */
287c478bd9Sstevel@tonic-gate 
29bdf0047cSRoger A. Faulkner /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
30*b4203d75SMarcel Telka /*	  All Rights Reserved	*/
31bdf0047cSRoger A. Faulkner 
327c478bd9Sstevel@tonic-gate #ifndef _SYS_UCONTEXT_H
337c478bd9Sstevel@tonic-gate #define	_SYS_UCONTEXT_H
347c478bd9Sstevel@tonic-gate 
357c478bd9Sstevel@tonic-gate #include <sys/feature_tests.h>
367c478bd9Sstevel@tonic-gate 
377c478bd9Sstevel@tonic-gate #include <sys/types.h>
38bc0e9132SGordon Ross #include <sys/mcontext.h>
397c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
407c478bd9Sstevel@tonic-gate #include <sys/signal.h>
417c478bd9Sstevel@tonic-gate #endif
427c478bd9Sstevel@tonic-gate 
437c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
447c478bd9Sstevel@tonic-gate extern "C" {
457c478bd9Sstevel@tonic-gate #endif
467c478bd9Sstevel@tonic-gate 
477c478bd9Sstevel@tonic-gate /*
487c478bd9Sstevel@tonic-gate  * Inclusion of <sys/signal.h> for sigset_t and stack_t definitions
497c478bd9Sstevel@tonic-gate  * breaks XPG4v2 namespace.  Therefore we must duplicate the defines
507c478bd9Sstevel@tonic-gate  * for these types here when _XPG4_2 is defined.
517c478bd9Sstevel@tonic-gate  */
527c478bd9Sstevel@tonic-gate 
537c478bd9Sstevel@tonic-gate #if defined(_XPG4_2) && !defined(__EXTENSIONS__)
547c478bd9Sstevel@tonic-gate #ifndef	_SIGSET_T
557c478bd9Sstevel@tonic-gate #define	_SIGSET_T
567c478bd9Sstevel@tonic-gate typedef	struct {	/* signal set type */
577c478bd9Sstevel@tonic-gate 	unsigned long	__sigbits[4];
587c478bd9Sstevel@tonic-gate } sigset_t;
597c478bd9Sstevel@tonic-gate #endif /* _SIGSET_T */
607c478bd9Sstevel@tonic-gate 
617c478bd9Sstevel@tonic-gate #ifndef	_STACK_T
627c478bd9Sstevel@tonic-gate #define	_STACK_T
637c478bd9Sstevel@tonic-gate typedef	struct {
647c478bd9Sstevel@tonic-gate 	void	*ss_sp;
657c478bd9Sstevel@tonic-gate 	size_t	ss_size;
667c478bd9Sstevel@tonic-gate 	int	ss_flags;
677c478bd9Sstevel@tonic-gate } stack_t;
687c478bd9Sstevel@tonic-gate #endif /* _STACK_T */
697c478bd9Sstevel@tonic-gate #endif /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */
707c478bd9Sstevel@tonic-gate 
717c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
727c478bd9Sstevel@tonic-gate typedef	struct ucontext ucontext_t;
737c478bd9Sstevel@tonic-gate #else
747c478bd9Sstevel@tonic-gate typedef	struct __ucontext ucontext_t;
757c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
767c478bd9Sstevel@tonic-gate 
777c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
787c478bd9Sstevel@tonic-gate struct	ucontext {
797c478bd9Sstevel@tonic-gate #else
807c478bd9Sstevel@tonic-gate struct	__ucontext {
817c478bd9Sstevel@tonic-gate #endif
827c478bd9Sstevel@tonic-gate 	unsigned long	uc_flags;
837c478bd9Sstevel@tonic-gate 	ucontext_t	*uc_link;
847c478bd9Sstevel@tonic-gate 	sigset_t   	uc_sigmask;
857c478bd9Sstevel@tonic-gate 	stack_t 	uc_stack;
867c478bd9Sstevel@tonic-gate 	mcontext_t 	uc_mcontext;
877c478bd9Sstevel@tonic-gate 	long		uc_filler[5];	/* see ABI spec for Intel386 */
887c478bd9Sstevel@tonic-gate };
897c478bd9Sstevel@tonic-gate 
907c478bd9Sstevel@tonic-gate #if defined(_SYSCALL32)
917c478bd9Sstevel@tonic-gate 
927c478bd9Sstevel@tonic-gate /* Kernel view of user ILP32 ucontext structure */
937c478bd9Sstevel@tonic-gate 
947c478bd9Sstevel@tonic-gate typedef struct ucontext32 {
957c478bd9Sstevel@tonic-gate 	uint32_t	uc_flags;
967c478bd9Sstevel@tonic-gate 	caddr32_t	uc_link;
97bdf0047cSRoger A. Faulkner 	sigset_t	uc_sigmask;
987c478bd9Sstevel@tonic-gate 	stack32_t	uc_stack;
997c478bd9Sstevel@tonic-gate 	mcontext32_t	uc_mcontext;
1007c478bd9Sstevel@tonic-gate 	int32_t		uc_filler[5];
1017c478bd9Sstevel@tonic-gate } ucontext32_t;
1027c478bd9Sstevel@tonic-gate 
1037c478bd9Sstevel@tonic-gate #if defined(_KERNEL)
1047c478bd9Sstevel@tonic-gate extern void ucontext_nto32(const ucontext_t *src, ucontext32_t *dest);
1057c478bd9Sstevel@tonic-gate extern void ucontext_32ton(const ucontext32_t *src, ucontext_t *dest);
1067c478bd9Sstevel@tonic-gate #endif
1077c478bd9Sstevel@tonic-gate 
1087c478bd9Sstevel@tonic-gate #endif	/* _SYSCALL32 */
1097c478bd9Sstevel@tonic-gate 
1107c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
1117c478bd9Sstevel@tonic-gate #define	GETCONTEXT	0
1127c478bd9Sstevel@tonic-gate #define	SETCONTEXT	1
1137c478bd9Sstevel@tonic-gate #define	GETUSTACK	2
1147c478bd9Sstevel@tonic-gate #define	SETUSTACK	3
1157c478bd9Sstevel@tonic-gate 
1167c478bd9Sstevel@tonic-gate /*
1177c478bd9Sstevel@tonic-gate  * values for uc_flags
1187c478bd9Sstevel@tonic-gate  * these are implementation dependent flags, that should be hidden
1197c478bd9Sstevel@tonic-gate  * from the user interface, defining which elements of ucontext
1207c478bd9Sstevel@tonic-gate  * are valid, and should be restored on call to setcontext
1217c478bd9Sstevel@tonic-gate  */
1227c478bd9Sstevel@tonic-gate 
1237c478bd9Sstevel@tonic-gate #define	UC_SIGMASK	0x01
1247c478bd9Sstevel@tonic-gate #define	UC_STACK	0x02
1257c478bd9Sstevel@tonic-gate #define	UC_CPU		0x04
1267c478bd9Sstevel@tonic-gate #define	UC_MAU		0x08
1277c478bd9Sstevel@tonic-gate #define	UC_FPU		UC_MAU
1287c478bd9Sstevel@tonic-gate 
1297c478bd9Sstevel@tonic-gate #define	UC_MCONTEXT	(UC_CPU|UC_FPU)
1307c478bd9Sstevel@tonic-gate 
1317c478bd9Sstevel@tonic-gate /*
1327c478bd9Sstevel@tonic-gate  * UC_ALL specifies the default context
1337c478bd9Sstevel@tonic-gate  */
1347c478bd9Sstevel@tonic-gate 
1357c478bd9Sstevel@tonic-gate #define	UC_ALL		(UC_SIGMASK|UC_STACK|UC_MCONTEXT)
1367c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
1377c478bd9Sstevel@tonic-gate 
1387c478bd9Sstevel@tonic-gate #ifdef _KERNEL
139bdf0047cSRoger A. Faulkner void savecontext(ucontext_t *, const k_sigset_t *);
1407c478bd9Sstevel@tonic-gate void restorecontext(ucontext_t *);
1417c478bd9Sstevel@tonic-gate 
1427c478bd9Sstevel@tonic-gate #ifdef _SYSCALL32
143bdf0047cSRoger A. Faulkner extern void savecontext32(ucontext32_t *, const k_sigset_t *);
1447c478bd9Sstevel@tonic-gate #endif
1457c478bd9Sstevel@tonic-gate #endif
1467c478bd9Sstevel@tonic-gate 
1477c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
1487c478bd9Sstevel@tonic-gate }
1497c478bd9Sstevel@tonic-gate #endif
1507c478bd9Sstevel@tonic-gate 
1517c478bd9Sstevel@tonic-gate #endif /* _SYS_UCONTEXT_H */
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