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66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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syscall.cpp
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Handles system calls from user-space.
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*******************************************************************************/
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#include <sortix/syscallnum.h>
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#include <sortix/kernel/kernel.h>
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#include <sortix/kernel/process.h>
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#include <sortix/kernel/scheduler.h>
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#include <sortix/kernel/syscall.h>
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#include <sortix/kernel/thread.h>
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namespace Sortix {
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namespace Syscall {
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extern "C"
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{
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size_t SYSCALL_MAX;
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volatile void* syscall_list[SYSCALL_MAX_NUM];
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}
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int BadSyscall()
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{
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Log::PrintF("I am the bad system call!\n");
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// TODO: Send signal, set errno, or crash/abort process?
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return -1;
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}
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void Init()
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{
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SYSCALL_MAX = SYSCALL_MAX_NUM;
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for ( size_t i = 0; i < SYSCALL_MAX_NUM; i++ )
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syscall_list[i] = (void*) BadSyscall;
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}
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void Register(size_t index, void* funcptr)
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{
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if ( SYSCALL_MAX_NUM <= index )
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PanicF("attempted to register syscall 0x%p to index %zu, but "
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"SYSCALL_MAX_NUM = %zu", funcptr, index, SYSCALL_MAX_NUM);
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syscall_list[index] = funcptr;
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}
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} // namespace Syscall
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} // namespace Sortix
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