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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef _SIGJMP_STRUCT_H
     28 #define	_SIGJMP_STRUCT_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #ifdef	__cplusplus
     33 extern "C" {
     34 #endif
     35 
     36 #include <sys/types.h>
     37 #include <sys/stack.h>
     38 #include <ucontext.h>
     39 #include <setjmp.h>
     40 
     41 #if defined(__sparc)
     42 
     43 /*
     44  * The following structure MUST match the ABI size specifier _SIGJBLEN.
     45  * This is 19 (longs).  The ABI value for _JBLEN is 12 (longs).
     46  * A greg_t is a long.  A sigset_t is 4 ints and a stack_t is 3 longs.
     47  *
     48  * The layout of this structure must match the layout of the same
     49  * structures defined in usr/src/lib/libbc/libc/sys/common/ucontext.h
     50  * and usr/src/ucblib/libucb/sparc/sys/setjmp.c.  Other than that,
     51  * the layout is private, not known to applications.
     52  *
     53  * We make the first 5 members match the implementations of
     54  * setjmp()/longjmp(), so that an application could (stupidly)
     55  * do sigsetjmp(env) followed by longjmp(env) (but not setjmp(env)
     56  * followed by siglongjmp(env)).
     57  */
     58 typedef struct {
     59 	int		sjs_flags;	/* JBUF[ 0]	*/
     60 	greg_t		sjs_sp;		/* JBUF[ 1]	*/
     61 	greg_t		sjs_pc;		/* JBUF[ 2]	*/
     62 	greg_t		sjs_fp;		/* JBUF[ 3]	*/
     63 	greg_t		sjs_i7;		/* JBUF[ 4]	*/
     64 	ucontext_t	*sjs_uclink;
     65 	ulong_t		sjs_pad[_JBLEN - 6];
     66 	sigset_t	sjs_sigmask;
     67 #if defined(_LP64)
     68 	ulong_t		sjs_pad1[2];
     69 #endif
     70 	stack_t		sjs_stack;
     71 } sigjmp_struct_t;
     72 
     73 #define	JB_SAVEMASK	0x1
     74 #define	JB_FRAMEPTR	0x2
     75 
     76 #endif	/* __sparc */
     77 
     78 #ifdef	__cplusplus
     79 }
     80 #endif
     81 
     82 #endif /* _SIGJMP_STRUCT_H */
     83