forked from ariadne/libucontext
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
|
|
* Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* This software is provided 'as is' and without any warranty, express or
|
|
* implied. In no event shall the authors be liable for any damages arising
|
|
* from the use of this software.
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <signal.h>
|
|
#include <libucontext/libucontext.h>
|
|
|
|
#ifdef FREESTANDING
|
|
# error libucontext_posix cannot be built in FREESTANDING mode.
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
# define TRACE(...) fprintf(stderr, "TRACE: " __VA_ARGS__)
|
|
#else
|
|
# define TRACE(...)
|
|
#endif
|
|
|
|
int
|
|
getcontext(libucontext_ucontext_t *ucp)
|
|
{
|
|
TRACE("getcontext(%p)\n", ucp);
|
|
|
|
if (sigprocmask(SIG_SETMASK, NULL, &ucp->uc_sigmask))
|
|
return -1;
|
|
|
|
return libucontext_getcontext(ucp);
|
|
}
|
|
|
|
int
|
|
setcontext(const libucontext_ucontext_t *ucp)
|
|
{
|
|
TRACE("setcontext(%p)\n", ucp);
|
|
|
|
if (sigprocmask(SIG_SETMASK, &ucp->uc_sigmask, NULL))
|
|
return -1;
|
|
|
|
return libucontext_setcontext(ucp);
|
|
}
|
|
|
|
int
|
|
swapcontext(libucontext_ucontext_t *oucp, const libucontext_ucontext_t *ucp)
|
|
{
|
|
TRACE("swapcontext(%p, %p)\n", oucp, ucp);
|
|
|
|
if (sigprocmask(SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask))
|
|
return -1;
|
|
|
|
return libucontext_swapcontext(oucp, ucp);
|
|
}
|