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