apps/shell/shell-memdebug.c

   1 /*
   2  * Copyright (c) 2008, Swedish Institute of Computer Science.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the Institute nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * This file is part of the Contiki operating system.
  30  *
  31  * $Id: shell-memdebug.c,v 1.1 2010/02/02 15:28:53 adamdunkels Exp $
  32  */
  33
  34 /**
  35  * \file
  36  *         Shell commands for memory debugging
  37  * \author
  38  *         Adam Dunkels <adam@sics.se>
  39  *         Joakim Eriksson <joakime@sics.se>
  40  */
  41
  42 #include "contiki.h"
  43 #include "shell-memdebug.h"
  44
  45 #include <stdio.h>
  46 #include <string.h>
  47
  48 /*---------------------------------------------------------------------------*/
  49 PROCESS(shell_poke_process, "poke");
  50 SHELL_COMMAND(poke_command,
  51               "poke",
  52               "poke <address> <byte>: write byte <byte> to address <address>",
  53               &shell_poke_process);
  54 PROCESS(shell_peek_process, "peek");
  55 SHELL_COMMAND(peek_command,
  56               "peek",
  57               "peek <address>: read a byte from address <address>",
  58               &shell_peek_process);
  59 /*---------------------------------------------------------------------------*/
  60 PROCESS_THREAD(shell_poke_process, ev, data)
  61 {
  62   uint8_t *address;
  63   uint8_t byte;
  64   const char *args, *next;
  65
  66   PROCESS_BEGIN();
  67
  68   args = data;
  69
  70   if(args == NULL) {
  71     shell_output_str(&poke_command, "usage 0", "");
  72     PROCESS_EXIT();
  73   }
  74
  75   address = (uint8_t *)(int)shell_strtolong(args, &next);
  76   if(next == args) {
  77     shell_output_str(&poke_command, "usage 1", "");
  78     PROCESS_EXIT();
  79   }
  80
  81   args = next;
  82   byte = shell_strtolong(args, &next);
  83   if(next == args) {
  84     shell_output_str(&poke_command, "usage 2", "");
  85     PROCESS_EXIT();
  86   }
  87
  88   printf("address %p byte 0x%02x\n", address, byte);
  89
  90   *address = byte;
  91
  92   PROCESS_END();
  93 }
  94 /*---------------------------------------------------------------------------*/
  95 PROCESS_THREAD(shell_peek_process, ev, data)
  96 {
  97   uint8_t *address;
  98   const char *args, *next;
  99   char buf[32];
 100
 101   PROCESS_BEGIN();
 102
 103   args = data;
 104
 105   if(args == NULL) {
 106     shell_output_str(&peek_command, "usage 0", "");
 107     PROCESS_EXIT();
 108   }
 109
 110   address = (uint8_t *)(int)shell_strtolong(args, &next);
 111   if(next == args) {
 112     shell_output_str(&peek_command, "usage 1", "");
 113     PROCESS_EXIT();
 114   }
 115
 116   snprintf(buf, sizeof(buf), "0x%02x", *address);
 117
 118   shell_output_str(&peek_command, buf, "");
 119
 120   PROCESS_END();
 121 }
 122 /*---------------------------------------------------------------------------*/
 123 void
 124 shell_memdebug_init(void)
 125 {
 126   shell_register_command(&poke_command);
 127   shell_register_command(&peek_command);
 128 }
 129 /*---------------------------------------------------------------------------*/