71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
|
|
|
|
This file is part of Sortix.
|
|
|
|
Sortix 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 3 of the License, or (at your option) any later
|
|
version.
|
|
|
|
Sortix 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
|
|
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
syscall.h
|
|
Handles system calls from userspace.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <sortix/kernel/platform.h>
|
|
#include "syscall.h"
|
|
#include <sortix/syscallnum.h>
|
|
#include <sortix/kernel/panic.h>
|
|
#include "process.h"
|
|
#include "thread.h"
|
|
#include "scheduler.h"
|
|
|
|
namespace Sortix
|
|
{
|
|
namespace Syscall
|
|
{
|
|
extern "C"
|
|
{
|
|
size_t SYSCALL_MAX;
|
|
volatile void* syscall_list[SYSCALL_MAX_NUM];
|
|
}
|
|
|
|
int BadSyscall()
|
|
{
|
|
Log::PrintF("I am the bad system call!\n");
|
|
// TODO: Send signal, set errnx o, or crash/abort process?
|
|
return -1;
|
|
}
|
|
|
|
void Init()
|
|
{
|
|
SYSCALL_MAX = SYSCALL_MAX_NUM;
|
|
for ( size_t i = 0; i < SYSCALL_MAX_NUM; i++ )
|
|
{
|
|
syscall_list[i] = (void*) BadSyscall;
|
|
}
|
|
}
|
|
|
|
void Register(size_t index, void* funcptr)
|
|
{
|
|
if ( SYSCALL_MAX_NUM <= index )
|
|
{
|
|
PanicF("attempted to register syscall 0x%p to index %zu, but "
|
|
"SYSCALL_MAX_NUM = %zu", funcptr, index, SYSCALL_MAX_NUM);
|
|
}
|
|
|
|
syscall_list[index] = funcptr;
|
|
}
|
|
}
|
|
}
|