usr/src/head/ucontext.h

   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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*      Copyright (c) 1988 AT&T */
  22 /*        All Rights Reserved   */
  23
  24
  25 /*
  26  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  27  *
  28  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  29  * Use is subject to license terms.
  30  */
  31
  32 #ifndef _UCONTEXT_H
  33 #define _UCONTEXT_H
  34
  35 #include <sys/ucontext.h>
  36 /*
  37  * The file sys/regset.h defines indices in the gregset_t array,
  38  * such as EIP on i386.  Those defines were historically exposed
  39  * via sys/ucontext.h, sys/signal.h, etc. which caused surprises
  40  * due to those defines unexpectedly polluting the namespace.
  41  * On the other hand, several existing applications assume that
  42  * the regset names are defined after an include <ucontext.h>.
  43  * To solve both problems at once: <ucontext.h> (this file)
  44  * DOES include sys/regset.h for you but <sys/ucontext.h>
  45  * does NOT include sys/regset.h anymore.
  46  */
  47 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
  48 #include <sys/regset.h>
  49 #include <sys/siginfo.h>
  50 #endif
  51
  52 #ifdef  __cplusplus
  53 extern "C" {
  54 #endif
  55
  56 #ifdef __sparc
  57 #ifdef __PRAGMA_REDEFINE_EXTNAME
  58 #pragma redefine_extname        makecontext     __makecontext_v2
  59 #else
  60 #define makecontext     __makecontext_v2
  61 #endif
  62 #endif
  63
  64 extern int getcontext(ucontext_t *) __RETURNS_TWICE;
  65 #pragma unknown_control_flow(getcontext)
  66 extern int setcontext(const ucontext_t *) __NORETURN;
  67 extern int swapcontext(ucontext_t *_RESTRICT_KYWD,
  68                 const ucontext_t *_RESTRICT_KYWD);
  69 extern void makecontext(ucontext_t *, void(*)(), int, ...);
  70
  71 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
  72 extern int walkcontext(const ucontext_t *, int (*)(uintptr_t, int, void *),
  73     void *);
  74 extern int printstack(int);
  75 extern int addrtosymstr(void *, char *, int);
  76 extern int getustack(stack_t **);
  77 extern int setustack(stack_t *);
  78
  79 extern int stack_getbounds(stack_t *);
  80 extern int stack_setbounds(const stack_t *);
  81 extern int stack_inbounds(void *);
  82 extern int stack_violation(int, const siginfo_t *, const ucontext_t *);
  83
  84 extern void *_stack_grow(void *);
  85 #endif  /* !_XPG4_2 || __EXTENSIONS__ */
  86
  87 #ifdef  __cplusplus
  88 }
  89 #endif
  90
  91 #endif  /* _UCONTEXT_H */