xref: /illumos-gate/usr/src/uts/sparc/sys/ucontext.h (revision bc0e91320069f0bcaee43e80a7ea686d9efa2d08)
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 /*
23*bc0e9132SGordon Ross  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
24*bc0e9132SGordon 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	*/
30bdf0047cSRoger A. Faulkner /*	  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>
38*bc0e9132SGordon 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 int	__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 
697c478bd9Sstevel@tonic-gate #endif /* _STACK_T */
707c478bd9Sstevel@tonic-gate #endif /* defined(_XPG4_2) && !defined(__EXTENSIONS__) */
717c478bd9Sstevel@tonic-gate 
727c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
737c478bd9Sstevel@tonic-gate typedef	struct ucontext ucontext_t;
747c478bd9Sstevel@tonic-gate #else
757c478bd9Sstevel@tonic-gate typedef	struct __ucontext ucontext_t;
767c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
777c478bd9Sstevel@tonic-gate 
787c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
797c478bd9Sstevel@tonic-gate struct	ucontext {
807c478bd9Sstevel@tonic-gate #else
817c478bd9Sstevel@tonic-gate struct	__ucontext {
827c478bd9Sstevel@tonic-gate #endif
837c478bd9Sstevel@tonic-gate 	uint_t		uc_flags;
847c478bd9Sstevel@tonic-gate 	ucontext_t	*uc_link;
857c478bd9Sstevel@tonic-gate 	sigset_t   	uc_sigmask;
867c478bd9Sstevel@tonic-gate 	stack_t 	uc_stack;
877c478bd9Sstevel@tonic-gate 	mcontext_t	uc_mcontext;
887c478bd9Sstevel@tonic-gate #ifdef	__sparcv9
897c478bd9Sstevel@tonic-gate 	long		uc_filler[4];
907c478bd9Sstevel@tonic-gate #else	/* __sparcv9 */
917c478bd9Sstevel@tonic-gate 	long		uc_filler[23];
927c478bd9Sstevel@tonic-gate #endif	/* __sparcv9 */
937c478bd9Sstevel@tonic-gate };
947c478bd9Sstevel@tonic-gate 
957c478bd9Sstevel@tonic-gate #ifdef _SYSCALL32
967c478bd9Sstevel@tonic-gate 
977c478bd9Sstevel@tonic-gate /* Kernel view of user ILP32 ucontext structure */
987c478bd9Sstevel@tonic-gate 
997c478bd9Sstevel@tonic-gate typedef struct ucontext32 {
1007c478bd9Sstevel@tonic-gate 	uint32_t	uc_flags;
1017c478bd9Sstevel@tonic-gate 	caddr32_t	uc_link;
102bdf0047cSRoger A. Faulkner 	sigset_t	uc_sigmask;
1037c478bd9Sstevel@tonic-gate 	stack32_t	uc_stack;
1047c478bd9Sstevel@tonic-gate 	mcontext32_t	uc_mcontext;
1057c478bd9Sstevel@tonic-gate 	int32_t		uc_filler[23];
1067c478bd9Sstevel@tonic-gate } ucontext32_t;
1077c478bd9Sstevel@tonic-gate 
1087c478bd9Sstevel@tonic-gate #ifdef _KERNEL
1097c478bd9Sstevel@tonic-gate extern void ucontext_32ton(const ucontext32_t *, ucontext_t *,
110*bc0e9132SGordon Ross     const struct fq32 *, struct _fq *);
1117c478bd9Sstevel@tonic-gate extern void fpuregset_nto32(const fpregset_t *, fpregset32_t *, struct fq32 *);
1127c478bd9Sstevel@tonic-gate #endif
1137c478bd9Sstevel@tonic-gate 
1147c478bd9Sstevel@tonic-gate #endif	/* _SYSCALL32 */
1157c478bd9Sstevel@tonic-gate 
1167c478bd9Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
1177c478bd9Sstevel@tonic-gate #define	GETCONTEXT	0
1187c478bd9Sstevel@tonic-gate #define	SETCONTEXT	1
1197c478bd9Sstevel@tonic-gate #define	GETUSTACK	2
1207c478bd9Sstevel@tonic-gate #define	SETUSTACK	3
1217c478bd9Sstevel@tonic-gate 
1227c478bd9Sstevel@tonic-gate /*
1237c478bd9Sstevel@tonic-gate  * values for uc_flags
1247c478bd9Sstevel@tonic-gate  * these are implementation dependent flags, that should be hidden
1257c478bd9Sstevel@tonic-gate  * from the user interface, defining which elements of ucontext
1267c478bd9Sstevel@tonic-gate  * are valid, and should be restored on call to setcontext
1277c478bd9Sstevel@tonic-gate  */
1287c478bd9Sstevel@tonic-gate 
1297c478bd9Sstevel@tonic-gate #define	UC_SIGMASK	0x01
1307c478bd9Sstevel@tonic-gate #define	UC_STACK	0x02
1317c478bd9Sstevel@tonic-gate #define	UC_CPU		0x04
1327c478bd9Sstevel@tonic-gate #define	UC_MAU		0x08
1337c478bd9Sstevel@tonic-gate #define	UC_FPU		UC_MAU
1347c478bd9Sstevel@tonic-gate #define	UC_INTR		0x10
1357c478bd9Sstevel@tonic-gate #define	UC_ASR		0x20
1367c478bd9Sstevel@tonic-gate 
1377c478bd9Sstevel@tonic-gate #define	UC_MCONTEXT	(UC_CPU|UC_FPU|UC_ASR)
1387c478bd9Sstevel@tonic-gate 
1397c478bd9Sstevel@tonic-gate /*
1407c478bd9Sstevel@tonic-gate  * UC_ALL specifies the default context
1417c478bd9Sstevel@tonic-gate  */
1427c478bd9Sstevel@tonic-gate 
1437c478bd9Sstevel@tonic-gate #define	UC_ALL		(UC_SIGMASK|UC_STACK|UC_MCONTEXT)
1447c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
1457c478bd9Sstevel@tonic-gate 
1467c478bd9Sstevel@tonic-gate #ifdef _KERNEL
147bdf0047cSRoger A. Faulkner extern void savecontext(ucontext_t *, const k_sigset_t *);
1487c478bd9Sstevel@tonic-gate extern void restorecontext(ucontext_t *);
1497c478bd9Sstevel@tonic-gate 
1507c478bd9Sstevel@tonic-gate #ifdef _SYSCALL32
151bdf0047cSRoger A. Faulkner extern void savecontext32(ucontext32_t *, const k_sigset_t *, struct fq32 *);
1527c478bd9Sstevel@tonic-gate #endif
1537c478bd9Sstevel@tonic-gate #endif
1547c478bd9Sstevel@tonic-gate 
1557c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
1567c478bd9Sstevel@tonic-gate }
1577c478bd9Sstevel@tonic-gate #endif
1587c478bd9Sstevel@tonic-gate 
1597c478bd9Sstevel@tonic-gate #endif /* _SYS_UCONTEXT_H */
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