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  1. /*
  2.  * Copyright (c) 2008 Jiri Svoboda
  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.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup debug
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <stdio.h>
  36. #include <stdlib.h>
  37. #include <string.h>
  38. #include <bool.h>
  39. #include <udebug.h>
  40. #include <sys/types.h>
  41.  
  42. #include "main.h"
  43. #include "cmd.h"
  44.  
  45. static void cmd_break(int argc, char *argv[]);
  46. void        cmd_help(int argc, char *argv[]);
  47. static void cmd_read(int argc, char *argv[]);
  48. static void cmd_quit(int argc, char *argv[]);
  49.  
  50. volatile bool quit = false;
  51.  
  52. cmd_desc_t cmd_table[] = {
  53.     { 1,    "break",    cmd_break },
  54.     { 0,    "help",     cmd_help },
  55.     { 2,    "read",     cmd_read },
  56.     { 0,    "quit",     cmd_quit },
  57.     { -1,   NULL,       NULL }
  58. };
  59.  
  60. static void cmd_break(int argc, char *argv[])
  61. {
  62.     uintptr_t addr;
  63.     char brkp[1];
  64.     int rc;
  65.     breakpoint_t *brk;
  66.     int i;
  67.  
  68.     brk = NULL;
  69.     for (i = 0; i < MAX_BRKPTS; i++)
  70.         if (brk_list[i].set == 0) brk = brk_list+i;
  71.  
  72.     if (!brk) {
  73.         printf("too many breakpoints\n");
  74.         return;
  75.     }
  76.  
  77.     (void)argc;
  78.     addr = strtoul(argv[1], NULL, 0);
  79.  
  80.     printf("You requested a breakpoint at 0x%x\n", addr);
  81.     rc = udebug_mem_read(app_phone, &brk->back, addr, 1);
  82.     printf("udebug_mem_read() -> %d\n", rc);
  83.     brkp[0] = 0xcc;
  84.     rc = udebug_mem_write(app_phone, brkp, addr, 1);
  85.     printf("udebug_mem_write() -> %d\n", rc);
  86.  
  87.     brk->addr = addr;
  88.     brk->set = 1;
  89. }
  90.  
  91. void cmd_help(int argc, char *argv[])
  92. {
  93.     int i;
  94.  
  95.     (void)argc; (void)argv;
  96.     i = 0;
  97.     while (cmd_table[i].name != NULL) {
  98.         printf("%s\n", cmd_table[i].name);
  99.         ++i;
  100.     }
  101. }
  102.  
  103. #define BYTES_PER_LINE 16
  104.  
  105. static void cmd_read(int argc, char *argv[])
  106. {
  107.     uintptr_t addr;
  108.     size_t length;
  109.     uint8_t buf[BYTES_PER_LINE];
  110.     int to_read, i;
  111.     int rc;
  112.  
  113.     (void)argc;
  114.     addr = strtoul(argv[1], NULL, 0);
  115.     length = strtoul(argv[2], NULL, 0);
  116.  
  117.     while (length > 0) {
  118.         to_read = length < BYTES_PER_LINE ? length : BYTES_PER_LINE;
  119.  
  120.         rc = udebug_mem_read(app_phone, buf, addr, to_read);
  121.         if (rc < 0) {
  122.             printf("error %d\n", rc);
  123.             return;
  124.         }
  125.  
  126.         printf("0x%x:", addr);
  127.         for (i = 0; i < to_read; ++i) {
  128.             printf(" %02x", buf[i]);
  129.         }
  130.         for (i = to_read; i < BYTES_PER_LINE; ++i) {
  131.             printf("   ");
  132.         }
  133.  
  134.         putchar ('\t');
  135.  
  136.         for (i = 0; i < to_read; ++i) {
  137.             if (buf[i] >= 32 && buf[i] < 127)
  138.                 putchar(buf[i]);
  139.             else
  140.                 putchar('.');
  141.         }
  142.         printf("\n");
  143.  
  144.         addr += to_read;
  145.         length -= to_read;
  146.     }
  147. }
  148.  
  149.  
  150. static void cmd_quit(int argc, char *argv[])
  151. {
  152.     (void)argc; (void)argv;
  153.     quit = true;
  154. }
  155.  
  156. /** @}
  157.  */
  158.