| /*- |
| * Copyright (c) 1999 Marcel Moolenaar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer |
| * in this position and unchanged. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _BSD_SYS_UCONTEXT_H_ |
| #define _BSD_SYS_UCONTEXT_H_ |
| |
| #include <sys/bsd_signal.h> |
| #include <machine/bsd_ucontext.h> |
| |
| typedef struct __ucontext { |
| /* |
| * Keep the order of the first two fields. Also, |
| * keep them the first two fields in the structure. |
| * This way we can have a union with struct |
| * sigcontext and ucontext_t. This allows us to |
| * support them both at the same time. |
| * note: the union is not defined, though. |
| */ |
| sigset_t uc_sigmask; |
| mcontext_t uc_mcontext; |
| |
| struct __ucontext *uc_link; |
| stack_t uc_stack; |
| int uc_flags; |
| #define UCF_SWAPPED 0x00000001 /* Used by swapcontext(3). */ |
| int __spare__[4]; |
| } ucontext_t; |
| |
| #if defined(_FREEBSD_KERNEL) && defined(COMPAT_FREEBSD4) |
| #if defined(__i386__) |
| struct ucontext4 { |
| sigset_t uc_sigmask; |
| struct mcontext4 uc_mcontext; |
| struct ucontext4 *uc_link; |
| stack_t uc_stack; |
| int __spare__[8]; |
| }; |
| #else /* __i386__ */ |
| #define ucontext4 ucontext |
| #endif /* __i386__ */ |
| #endif /* _FREEBSD_KERNEL */ |
| |
| #ifndef _FREEBSD_KERNEL |
| |
| __BEGIN_DECLS |
| |
| int getcontext(ucontext_t *); |
| int setcontext(const ucontext_t *); |
| void makecontext(ucontext_t *, void (*)(void), int, ...); |
| int signalcontext(ucontext_t *, int, __sighandler_t *); |
| int swapcontext(ucontext_t *, const ucontext_t *); |
| |
| __END_DECLS |
| |
| #else /* _FREEBSD_KERNEL */ |
| |
| struct thread; |
| |
| /* |
| * Flags for get_mcontext(). The low order 4 bits (i.e a mask of 0x0f) are |
| * reserved for use by machine independent code. All other bits are for use |
| * by machine dependent code. |
| */ |
| #define GET_MC_CLEAR_RET 1 |
| |
| /* Machine-dependent functions: */ |
| int get_mcontext(struct thread *, mcontext_t *, int); |
| int set_mcontext(struct thread *, const mcontext_t *); |
| |
| #endif /* !_FREEBSD_KERNEL */ |
| |
| #endif /* !_BSD_SYS_UCONTEXT_H_ */ |
