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/* Copyright (C) 2005 David Decotigny
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
*/
#include <sos/uaccess.h>
#include "idt.h"
#include "irq.h"
#include "swintr.h"
/**
* The Assembler low-level wrapper for the SOS syscalls
*
* This wrapper takes care of saving the state of the calling user
* thread before calling the "C" function sos_do_syscall(), passing it
* the correct arguments.
*/
extern void sos_syscall_wrapper();
sos_ret_t sos_swintr_subsystem_setup(void)
{
sos_ui32_t flags;
sos_ret_t retval;
sos_disable_IRQs(flags);
retval
= sos_idt_set_handler(SOS_SWINTR_SOS_SYSCALL,
(sos_vaddr_t) sos_syscall_wrapper,
3 /* CPL3 routine */);
sos_restore_IRQs(flags);
return retval;
}