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/* _exit.c - Exit implementation.
Copyright (C) 2008 Free Software Foundation, Inc.
Written by Neal H. Walfield <neal@gnu.org>.
This file is part of the GNU Hurd.
The GNU Hurd 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 2, or (at
your option) any later version.
The GNU Hurd 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
#include <hurd/stddef.h>
#include <hurd/startup.h>
#include <viengoos/folio.h>
#include <backtrace.h>
int __global_zero;
void
_exit (int ret)
{
#if defined (RM_INTERN)
# if defined (__i386__)
/* Try to invoke the debugger. */
asm ("int $3");
# endif
#else
backtrace_print ();
extern struct hurd_startup_data *__hurd_startup_data;
/* We try to kill the activity and, if that fails, the main
thread. */
vg_addr_t objs[] = { __hurd_startup_data->activity,
__hurd_startup_data->thread };
int o;
for (o = 0; o < sizeof (objs) / sizeof (objs[0]); o ++)
{
int i;
for (i = 0; i < __hurd_startup_data->desc_count; i ++)
{
struct hurd_object_desc *desc = &__hurd_startup_data->descs[i];
if (VG_ADDR_EQ (desc->object, objs[o]))
{
if (VG_ADDR_IS_VOID (desc->storage))
/* We don't own the storage and thus can't deallocate
the object. */
continue;
vg_addr_t folio = vg_addr_chop (desc->storage, VG_FOLIO_OBJECTS_LOG2);
int index = vg_addr_extract (desc->storage, VG_FOLIO_OBJECTS_LOG2);
error_t err;
err = vg_folio_object_alloc (VG_ADDR_VOID, folio, index,
vg_cap_void, VG_OBJECT_POLICY_VOID,
(uintptr_t) ret,
NULL, NULL);
if (err)
debug (0, "deallocating object: %d", err);
}
}
}
#endif
debug (0, "Failed to die gracefully; doing the ultra-violent.");
volatile int j = ret / __global_zero;
for (;;)
{
j --;
#ifndef RM_INTERN
/* XXX: This doesn't work for laden. */
sched_yield ();
#endif
}
}
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