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typedef struct mcontext mcontext_t;
typedef struct ucontext ucontext_t;
extern int swapcontext(ucontext_t*, const ucontext_t*);
extern void makecontext(ucontext_t*, void(*)(), int, ...);
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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.
* 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.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* @(#)ucontext.h 8.1 (Berkeley) 6/10/93
* JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta
* $FreeBSD: src/sys/mips/include/ucontext.h,v 1.2 2010/01/10 19:50:24 imp Exp $
*/
struct mcontext {
/*
* These fields must match the corresponding fields in struct
* sigcontext which follow 'sc_mask'. That way we can support
* struct sigcontext and ucontext_t at the same time.
*/
int mc_onstack; /* sigstack state to restore */
int mc_pc; /* pc at time of signal */
int mc_regs[32]; /* processor regs 0 to 31 */
int sr; /* status register */
int mullo, mulhi; /* mullo and mulhi registers... */
int mc_fpused; /* fp has been used */
int mc_fpregs[33]; /* fp regs 0 to 31 and csr */
int mc_fpc_eir; /* fp exception instruction reg */
void *mc_tls; /* pointer to TLS area */
int __spare__[8]; /* XXX reserved */
};
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;
int __spare__[4];
};
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