t_error ia32_thread_init(void)
{
THREAD_ENTER(thread);
o_as* as;
t_vaddr int_stack;
/*
* 1)
*/
if (as_get(kasid, &as) != ERROR_NONE)
THREAD_LEAVE(thread, ERROR_UNKNOWN);
/*
* 2)
*/
if (map_reserve(kasid,
MAP_OPT_PRIVILEGED,
3 * PAGESZ,
PERM_READ | PERM_WRITE,
(t_vaddr*)&thread->machdep.tss) != ERROR_NONE)
THREAD_LEAVE(thread, ERROR_UNKNOWN);
memset(thread->machdep.tss, 0x0, sizeof(t_ia32_tss));
/*
* 3)
*/
if (map_reserve(kasid,
MAP_OPT_PRIVILEGED,
2 * PAGESZ,
PERM_READ | PERM_WRITE,
&int_stack) != ERROR_NONE)
THREAD_LEAVE(thread, ERROR_UNKNOWN);
/*
* 4)
*/
if (tss_load(thread->machdep.tss,
SEGSEL(PMODE_GDT_CORE_DS, PRIV_RING0),
int_stack + 2 * PAGESZ - 16,
0x68) != ERROR_NONE)
THREAD_LEAVE(thread, ERROR_UNKNOWN);
gl_stack_int = int_stack + 2 * PAGESZ - 16;
/*
* 5)
*/
if (tss_init(thread->machdep.tss) != ERROR_NONE)
THREAD_LEAVE(thread, ERROR_UNKNOWN);
THREAD_LEAVE(thread, ERROR_NONE);
}
t_status interface_map_reserve(o_syscall* message)
{
t_status error;
t_vaddr result1;
error = map_reserve(message->u.request.u.map_reserve.arg1,
message->u.request.u.map_reserve.arg2,
message->u.request.u.map_reserve.arg3,
message->u.request.u.map_reserve.arg4,
&result1);
message->u.reply.error = error;
message->u.reply.u.map_reserve.result1 = result1;
return (STATUS_OK);
}
msg_metadata *reserve_message_metadata(void *message_envelope) {
return (msg_metadata *) map_reserve(&metadata_map, message_envelope);
}
