darling-newlkm/darling/continuation.c

42 lines
1.4 KiB
C

/*
* Darling Mach Linux Kernel Module
* Copyright (C) 2020 Lubos Dolezel
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <duct/duct.h>
#include <duct/duct_pre_xnu.h>
#include <osfmk/kern/thread.h>
#include <duct/duct_kern_debug.h>
#include <duct/duct_post_xnu.h>
#include "continuation.h"
#include "task_registry.h"
void cont_discard(struct cont_jmpbuf* buf)
{
buf->__rip = 0;
}
void thread_syscall_return(kern_return_t ret)
{
thread_t myself = darling_thread_get_current();
if (((struct cont_jmpbuf*) myself->cont_jmpbuf)->__rip == 0)
duct_panic("thread_syscall_return invoked, but XNU_CONTINUATION_ENABLED() was not used!");
else
cont_longjmp((struct cont_jmpbuf*) myself->cont_jmpbuf, ret);
}