sortix-mirror/sortix/x86/scheduler.cpp

53 lines
1.6 KiB
C++

/******************************************************************************
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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/>.
x86/scheduler.cpp
CPU specific things related to the scheduler.
******************************************************************************/
#include "platform.h"
#include "scheduler.h"
#include "../memorymanagement.h"
#include "descriptor_tables.h"
namespace Sortix
{
namespace Scheduler
{
const size_t KERNEL_STACK_SIZE = 256UL * 1024UL;
const addr_t KERNEL_STACK_END = 0x80001000UL;
const addr_t KERNEL_STACK_START = KERNEL_STACK_END + KERNEL_STACK_SIZE;
void InitCPU()
{
// TODO: Prevent the kernel heap and other stuff from accidentally
// also allocating this virtual memory region!
if ( !Memory::MapRangeKernel(KERNEL_STACK_END, KERNEL_STACK_SIZE) )
{
PanicF("could not create kernel stack (%zx to %zx)",
KERNEL_STACK_END, KERNEL_STACK_START);
}
GDT::SetKernelStack((size_t*) KERNEL_STACK_START);
}
}
}