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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 "cons.h"
  44. #include "dthread.h"
  45. #include "include/arch.h"
  46. #include "cmd.h"
  47.  
  48. static void cmd_break(int argc, char *argv[]);
  49. static void cmd_ct(int argc, char *argv[]);
  50. static void cmd_dbreak(int argc, char *argv[]);
  51. static void cmd_go(int argc, char *argv[]);
  52. static void cmd_istep(int argc, char *argv[]);
  53. void        cmd_help(int argc, char *argv[]);
  54. static void cmd_memr(int argc, char *argv[]);
  55. static void cmd_pwt(int argc, char *argv[]);
  56. static void cmd_regs(int argc, char *argv[]);
  57. static void cmd_stop(int argc, char *argv[]);
  58. static void cmd_threads(int argc, char *argv[]);
  59. static void cmd_quit(int argc, char *argv[]);
  60.  
  61. volatile bool quit = false;
  62.  
  63. cmd_desc_t cmd_table[] = {
  64.     { 1,    "break",    cmd_break },
  65.     { 1,    "ct",       cmd_ct },
  66.     { 1,    "dbreak",   cmd_dbreak },
  67.     { 0,    "go",       cmd_go },
  68.     { 0,    "help",     cmd_help },
  69.     { 2,    "memr",     cmd_memr },
  70.     { 0,    "pwt",      cmd_pwt },
  71.     { 0,    "regs",     cmd_regs },
  72.     { 0 ,   "stop",     cmd_stop },
  73.     { 0,    "istep",    cmd_istep },
  74.     { 0,    "threads",  cmd_threads },
  75.     { 0,    "quit",     cmd_quit },
  76.     { -1,   NULL,       NULL }
  77. };
  78.  
  79. static void cmd_break(int argc, char *argv[])
  80. {
  81.     uintptr_t addr;
  82.  
  83.     (void)argc;
  84.     addr = strtoul(argv[1], NULL, 0);
  85.  
  86.     cons_printf("You requested a breakpoint at 0x%x\n", addr);
  87.     arch_breakpoint_add(addr);
  88. }
  89.  
  90. static void cmd_ct(int argc, char *argv[])
  91. {
  92.     int tid;
  93.  
  94.     link_t *cur;
  95.     dthread_t *dt;
  96.  
  97.     (void)argc;
  98.     tid = strtoul(argv[1], NULL, 0);
  99.  
  100.     dt = NULL;
  101.     for (cur = dthreads.next; cur != &dthreads; cur = cur->next) {
  102.         dt = list_get_instance(cur, dthread_t, link);
  103.         if (dt->id == tid) break;
  104.     }
  105.    
  106.     if (dt->id == tid) {
  107.         cwt = dt;
  108.         cons_printf("changed working thread to: %d [hash 0x%x]\n",
  109.             cwt->id, cwt->hash);
  110.     } else {
  111.         cons_printf("no such thread\n");
  112.     }
  113. }
  114.  
  115. static void cmd_dbreak(int argc, char *argv[])
  116. {
  117.     int bid;
  118.  
  119.     (void)argc;
  120.     bid = strtoul(argv[1], NULL, 0);
  121.  
  122.     printf("remove breakpoint %d\n", bid);
  123.  
  124.     arch_breakpoint_remove(bid);
  125. }
  126.  
  127.  
  128. void cmd_go(int argc, char *argv[])
  129. {
  130.     link_t *cur;
  131.     dthread_t *dt;
  132.  
  133.     (void)argc; (void)argv;
  134.  
  135.     dt = NULL;
  136.     for (cur = dthreads.next; cur != &dthreads; cur = cur->next) {
  137.         dt = list_get_instance(cur, dthread_t, link);
  138.         arch_set_singlestep(dt, 0);
  139.         dthread_resume(dt);
  140.     }  
  141. }
  142.  
  143. void cmd_help(int argc, char *argv[])
  144. {
  145.     int i;
  146.  
  147.     (void)argc; (void)argv;
  148.     i = 0;
  149.     while (cmd_table[i].name != NULL) {
  150.         cons_printf("%s\n", cmd_table[i].name);
  151.         ++i;
  152.     }
  153. }
  154.  
  155. void cmd_istep(int argc, char *argv[])
  156. {
  157.     (void)argc; (void)argv;
  158.  
  159.     arch_set_singlestep(cwt, 1);
  160.     dthread_resume(cwt);
  161. }
  162.  
  163. #define BYTES_PER_LINE 16
  164.  
  165. static void cmd_memr(int argc, char *argv[])
  166. {
  167.     uintptr_t addr;
  168.     size_t length;
  169.     uint8_t buf[BYTES_PER_LINE];
  170.     int to_read, i;
  171.     int rc;
  172.  
  173.     (void)argc;
  174.     addr = strtoul(argv[1], NULL, 0);
  175.     length = strtoul(argv[2], NULL, 0);
  176.  
  177.     while (length > 0) {
  178.         to_read = length < BYTES_PER_LINE ? length : BYTES_PER_LINE;
  179.  
  180.         rc = udebug_mem_read(app_phone, buf, addr, to_read);
  181.         if (rc < 0) {
  182.             cons_printf("error %d\n", rc);
  183.             return;
  184.         }
  185.  
  186.         cons_printf("0x%x:", addr);
  187.         for (i = 0; i < to_read; ++i) {
  188.             cons_printf(" %02x", buf[i]);
  189.         }
  190.         for (i = to_read; i < BYTES_PER_LINE; ++i) {
  191.             cons_printf("   ");
  192.         }
  193.  
  194.         putchar ('\t');
  195.  
  196.         for (i = 0; i < to_read; ++i) {
  197.             if (buf[i] >= 32 && buf[i] < 127)
  198.                 putchar(buf[i]);
  199.             else
  200.                 putchar('.');
  201.         }
  202.         cons_printf("\n");
  203.  
  204.         addr += to_read;
  205.         length -= to_read;
  206.     }
  207. }
  208.  
  209. void cmd_pwt(int argc, char *argv[])
  210. {
  211.     (void)argc; (void)argv;
  212.  
  213.     cons_printf("working thread: %d [hash 0x%x]\n", cwt->id, cwt->hash);
  214. }
  215.  
  216. void cmd_regs(int argc, char *argv[])
  217. {
  218.     (void)argc; (void)argv;
  219.  
  220.     if (cwt) arch_dump_regs(cwt->hash);
  221. }
  222.  
  223. void cmd_stop(int argc, char *argv[])
  224. {
  225.     link_t *cur;
  226.     dthread_t *dt;
  227.     int rc;
  228.  
  229.     (void)argc; (void)argv;
  230.  
  231.     dt = NULL;
  232.     for (cur = dthreads.next; cur != &dthreads; cur = cur->next) {
  233.         dt = list_get_instance(cur, dthread_t, link);
  234.         if (!dt->stopped) {
  235.             rc = udebug_stop(app_phone, dt->hash);
  236.             if (rc < 0) {
  237.                 printf("failed halting thread %d\n", dt->id);
  238.             }
  239.         }
  240.     }  
  241. }
  242.  
  243.  
  244. void cmd_threads(int argc, char *argv[])
  245. {
  246.     link_t *cur;
  247.     dthread_t *dt;
  248.  
  249.     (void)argc;
  250.  
  251.     dt = NULL;
  252.     for (cur = dthreads.next; cur != &dthreads; cur = cur->next) {
  253.         dt = list_get_instance(cur, dthread_t, link);
  254.         cons_printf("%d [hash 0x%x]\n", dt->id, dt->hash);
  255.     }  
  256. }
  257.  
  258.  
  259. static void cmd_quit(int argc, char *argv[])
  260. {
  261.     (void)argc; (void)argv;
  262.     quit = true;
  263. }
  264.  
  265. /** @}
  266.  */
  267.