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https://github.com/0intro/libtask
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78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
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typedef struct mcontext mcontext_t;
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typedef struct ucontext ucontext_t;
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extern int swapcontext(ucontext_t*, const ucontext_t*);
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extern void makecontext(ucontext_t*, void(*)(), int, ...);
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ucontext.h 8.1 (Berkeley) 6/10/93
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* JNPR: ucontext.h,v 1.2 2007/08/09 11:23:32 katta
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* $FreeBSD: src/sys/mips/include/ucontext.h,v 1.2 2010/01/10 19:50:24 imp Exp $
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*/
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struct mcontext {
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/*
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* These fields must match the corresponding fields in struct
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* sigcontext which follow 'sc_mask'. That way we can support
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* struct sigcontext and ucontext_t at the same time.
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*/
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int mc_onstack; /* sigstack state to restore */
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int mc_pc; /* pc at time of signal */
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int mc_regs[32]; /* processor regs 0 to 31 */
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int sr; /* status register */
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int mullo, mulhi; /* mullo and mulhi registers... */
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int mc_fpused; /* fp has been used */
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int mc_fpregs[33]; /* fp regs 0 to 31 and csr */
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int mc_fpc_eir; /* fp exception instruction reg */
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void *mc_tls; /* pointer to TLS area */
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int __spare__[8]; /* XXX reserved */
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};
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struct ucontext {
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/*
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* Keep the order of the first two fields. Also,
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* keep them the first two fields in the structure.
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* This way we can have a union with struct
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* sigcontext and ucontext_t. This allows us to
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* support them both at the same time.
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* note: the union is not defined, though.
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*/
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sigset_t uc_sigmask;
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mcontext_t uc_mcontext;
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struct __ucontext *uc_link;
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stack_t uc_stack;
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int uc_flags;
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int __spare__[4];
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};
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