source: trunk/kernel/syscalls/sys_panic.c @ 410

Last change on this file since 410 was 410, checked in by alain, 4 years ago

Introduce new syscalls.

File size: 2.3 KB
Line 
1/*
2 * sys_panic.c - kill calling process and display a debug message on kernel terminal.
3 *
4 * Author    Alain Greiner (2016,2017)
5 * 
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include <hal_types.h>
25#include <hal_uspace.h>
26#include <core.h>
27#include <thread.h>
28#include <process.h>
29#include <vmm.h>
30#include <printk.h>
31
32//////////////////////////////
33int sys_panic( char * string )
34{
35        error_t   error;
36    paddr_t   paddr;
37
38    char      kbuf[256];
39
40    thread_t  * this    = CURRENT_THREAD;
41    process_t * process = this->process;
42    core_t    * core    = this->core;
43
44    // check string in user space
45    error = vmm_v2p_translate( false , string , &paddr );
46
47        if( error )
48        {
49        printk("\n[USER DBG] thread %x / process %x/ core[%x,%d] / cycle %d\n"
50        "cause unknown, because string not in user space\n",
51        this->trdid , process->pid , local_cxy , core->lid ,
52        (uint32_t)hal_get_cycles() );
53        }
54
55    // ckeck string length
56    if( hal_strlen_from_uspace( string ) >= 256 )
57        {
58        printk("\n[USER DBG] thread %x / process %x/ core[%x,%d] / cycle %d\n"
59        "cause unknown, because string larger than 256 characters\n",
60        this->trdid , process->pid , local_cxy , core->lid ,
61        (uint32_t)hal_get_cycles() );
62        }
63
64    // copy string in kernel space
65    hal_strcpy_from_uspace( kbuf , string , 256 );
66
67    // print user debug message on kernel terminal
68    printk("\n[USER DBG] thread %x / process %x / core[%x,%d] / cycle %d\n %s\n",
69    this->trdid , process->pid , local_cxy, core->lid ,
70    (uint32_t)hal_get_cycles() , kbuf );
71
72        return 0; 
73
74}  // end sys_get_cycle()
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