51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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/* Copyright (C) 2005 David Decotigny
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA.
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*/
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#include <sos/uaccess.h>
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#include "idt.h"
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#include "irq.h"
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#include "swintr.h"
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/**
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* The Assembler low-level wrapper for the SOS syscalls
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*
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* This wrapper takes care of saving the state of the calling user
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* thread before calling the "C" function sos_do_syscall(), passing it
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* the correct arguments.
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*/
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extern void sos_syscall_wrapper();
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sos_ret_t sos_swintr_subsystem_setup(void)
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{
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sos_ui32_t flags;
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sos_ret_t retval;
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sos_disable_IRQs(flags);
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retval
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= sos_idt_set_handler(SOS_SWINTR_SOS_SYSCALL,
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(sos_vaddr_t) sos_syscall_wrapper,
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3 /* CPL3 routine */);
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sos_restore_IRQs(flags);
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return retval;
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}
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