Two 'peek' and 'poke' commands for reading and writing directly to memory

apps/shell/Makefile.shell

@@ -10,7 +10,7 @@ shell_src = shell.c shell-reboot.c \
             shell-rime-sendcmd.c shell-download.c shell-rime-neighbors.c \
             shell-rime-unicast.c \
             shell-tweet.c \
-            shell-netperf.c
+            shell-netperf.c shell-memdebug.c
 shell_dsc = shell-dsc.c
 
 APPS += webbrowser

apps/shell/shell-memdebug.c

@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2008, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * $Id: shell-memdebug.c,v 1.1 2010/02/02 15:28:53 adamdunkels Exp $
+ */
+
+/**
+ * \file
+ *         Shell commands for memory debugging
+ * \author
+ *         Adam Dunkels <adam@sics.se>
+ *         Joakim Eriksson <joakime@sics.se>
+ */
+
+#include "contiki.h"
+#include "shell-memdebug.h"
+
+#include <stdio.h>
+#include <string.h>
+
+/*---------------------------------------------------------------------------*/
+PROCESS(shell_poke_process, "poke");
+SHELL_COMMAND(poke_command,
+	      "poke",
+	      "poke <address> <byte>: write byte <byte> to address <address>",
+	      &shell_poke_process);
+PROCESS(shell_peek_process, "peek");
+SHELL_COMMAND(peek_command,
+	      "peek",
+	      "peek <address>: read a byte from address <address>",
+	      &shell_peek_process);
+/*---------------------------------------------------------------------------*/
+PROCESS_THREAD(shell_poke_process, ev, data)
+{
+  uint8_t *address;
+  uint8_t byte;
+  const char *args, *next;
+
+  PROCESS_BEGIN();
+
+  args = data;
+
+  if(args == NULL) {
+    shell_output_str(&poke_command, "usage 0", "");
+    PROCESS_EXIT();
+  }
+  
+  address = (uint8_t *)(int)shell_strtolong(args, &next);
+  if(next == args) {
+    shell_output_str(&poke_command, "usage 1", "");
+    PROCESS_EXIT();
+  }
+
+  args = next;
+  byte = shell_strtolong(args, &next);
+  if(next == args) {
+    shell_output_str(&poke_command, "usage 2", "");
+    PROCESS_EXIT();
+  }
+
+  printf("address %p byte 0x%02x\n", address, byte);
+  
+  *address = byte;
+  
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------------*/
+PROCESS_THREAD(shell_peek_process, ev, data)
+{
+  uint8_t *address;
+  const char *args, *next;
+  char buf[32];
+
+  PROCESS_BEGIN();
+
+  args = data;
+
+  if(args == NULL) {
+    shell_output_str(&peek_command, "usage 0", "");
+    PROCESS_EXIT();
+  }
+  
+  address = (uint8_t *)(int)shell_strtolong(args, &next);
+  if(next == args) {
+    shell_output_str(&peek_command, "usage 1", "");
+    PROCESS_EXIT();
+  }
+
+  snprintf(buf, sizeof(buf), "0x%02x", *address);
+
+  shell_output_str(&peek_command, buf, "");
+  
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------------*/
+void
+shell_memdebug_init(void)
+{
+  shell_register_command(&poke_command);
+  shell_register_command(&peek_command);
+}
+/*---------------------------------------------------------------------------*/

apps/shell/shell-memdebug.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2008, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * $Id: shell-memdebug.h,v 1.1 2010/02/02 15:28:53 adamdunkels Exp $
+ */
+
+/**
+ * \file
+ *         Shell commands for memory debugging
+ * \author
+ *         Adam Dunkels <adam@sics.se>
+ */
+
+#ifndef __SHELL_MEMDEBUG_H__
+#define __SHELL_MEMDEBUG_H__
+
+#include "shell.h"
+
+void shell_memdebug_init(void);
+
+#endif /* __SHELL_MEMDEBUG_H__ */

apps/shell/shell.h

@@ -48,7 +48,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * $Id: shell.h,v 1.20 2010/01/31 19:35:12 adamdunkels Exp $
+ * $Id: shell.h,v 1.21 2010/02/02 15:28:53 adamdunkels Exp $
  */
 
 /**
@@ -361,6 +361,7 @@ struct shell_input {
 #include "shell-file.h"
 #include "shell-httpd.h"
 #include "shell-irc.h"
+#include "shell-memdebug.h"
 #include "shell-netfile.h"
 #include "shell-netperf.h"
 #include "shell-netstat.h"