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2911 | svoboda | 1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup debug |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
35 | #include <stdio.h> |
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36 | #include <stdlib.h> |
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37 | #include <unistd.h> |
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38 | #include <syscall.h> |
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39 | #include <ipc/ipc.h> |
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40 | #include <fibril.h> |
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41 | #include <errno.h> |
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42 | #include <udebug.h> |
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43 | #include <async.h> |
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44 | #include <string.h> |
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45 | |||
46 | #include "cmd.h" |
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2915 | svoboda | 47 | #include "main.h" |
2911 | svoboda | 48 | |
49 | void thread_debug_start(unsigned thread_hash); |
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50 | |||
51 | #define INBUF_SIZE 64 |
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52 | char in_buf[INBUF_SIZE]; |
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53 | |||
54 | #define MAX_ARGC 10 |
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55 | int cmd_argc; |
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56 | char *cmd_argv[MAX_ARGC + 1]; /* need one spare field for cmd_split() */ |
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57 | |||
58 | #define THBUF_SIZE 64 |
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59 | thash_t thread_hash_buf[THBUF_SIZE]; |
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60 | unsigned n_threads; |
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61 | |||
62 | int next_thread_id; |
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63 | |||
64 | int app_phone; |
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65 | volatile bool abort_debug; |
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66 | |||
67 | thash_t thash; |
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68 | volatile int paused; |
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69 | |||
70 | void read_line(char *buffer, int n) |
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71 | { |
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72 | char c; |
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73 | int i; |
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74 | |||
75 | i = 0; |
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76 | while (i < n - 1) { |
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77 | c = getchar(); |
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78 | if (c == '\n') break; |
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79 | if (c == '\b') { |
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80 | if (i > 0) { |
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81 | putchar('\b'); |
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82 | --i; |
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83 | } |
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84 | continue; |
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85 | } |
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86 | |||
87 | putchar(c); |
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88 | buffer[i++] = c; |
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89 | } |
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90 | |||
91 | putchar('\n'); |
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92 | buffer[i] = '\0'; |
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93 | } |
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94 | |||
95 | void command_split(char *cmd_str) |
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96 | { |
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97 | char *p = cmd_str; |
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98 | |||
99 | if (*p == '\0') { |
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100 | cmd_argc = 0; |
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101 | return; |
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102 | } |
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103 | |||
104 | cmd_argc = 1; |
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105 | cmd_argv[0] = p; |
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106 | |||
107 | while (*p != '\0') { |
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108 | if (*p == ' ') { |
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109 | cmd_argv[cmd_argc++] = p + 1; |
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110 | *p = '\0'; |
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111 | } |
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112 | ++p; |
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113 | } |
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114 | } |
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115 | |||
116 | void command_run(void) |
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117 | { |
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118 | int i; |
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119 | int cmp_len; |
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120 | int len; |
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121 | |||
122 | int idx_found; |
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123 | int num_found; |
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124 | |||
125 | len = strlen(cmd_argv[0]); |
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126 | cmp_len = 1; |
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127 | |||
128 | while (cmp_len <= len + 1) { |
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129 | |||
130 | num_found = 0; |
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131 | i = 0; |
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132 | while (cmd_table[i].name != NULL) { |
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133 | if (strncmp(cmd_table[i].name, cmd_argv[0], cmp_len) == 0) { |
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134 | idx_found = i; |
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135 | ++num_found; |
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136 | } |
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137 | ++i; |
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138 | } |
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139 | |||
140 | if (num_found < 2) break; |
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141 | |||
142 | --cmp_len; |
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143 | } |
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144 | |||
145 | if (num_found == 0) { |
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146 | printf("Unknown command. Try one of:\n"); |
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147 | cmd_help(0, NULL); |
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148 | return; |
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149 | } |
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150 | |||
151 | if (cmd_argc - 1 != cmd_table[idx_found].argc) { |
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152 | printf("Command '%s' expects %d arguments\n", |
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153 | cmd_table[idx_found].name, cmd_table[idx_found].argc); |
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154 | return; |
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155 | } |
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156 | |||
157 | (*cmd_table[idx_found].proc)(cmd_argc, cmd_argv); |
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158 | } |
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159 | |||
160 | |||
161 | int task_connect(int taskid) |
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162 | { |
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163 | int rc; |
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2918 | svoboda | 164 | unsigned evmask; |
2911 | svoboda | 165 | |
166 | printf("ipc_connect_kbox(%d)... ", taskid); |
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167 | rc = ipc_connect_kbox(taskid); |
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168 | printf("-> %d\n", rc); |
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169 | app_phone = rc; |
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170 | if (rc < 0) return rc; |
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171 | |||
172 | printf("udebug_begin()... "); |
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173 | rc = udebug_begin(app_phone); |
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174 | printf("-> %d\n", rc); |
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175 | if (rc < 0) return rc; |
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176 | |||
2918 | svoboda | 177 | evmask = UDEBUG_EM_ALL & ~(UDEBUG_EM_SYSCALL_B | UDEBUG_EM_SYSCALL_E); |
178 | printf("udebug_set_evmask(0x%x)... ", evmask); |
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179 | rc = udebug_set_evmask(app_phone, evmask); |
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2911 | svoboda | 180 | printf("-> %d\n", rc); |
181 | if (rc < 0) return rc; |
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182 | |||
183 | return 0; |
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184 | } |
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185 | |||
186 | int get_thread_list(void) |
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187 | { |
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188 | int rc; |
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189 | int tb_copied; |
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190 | int tb_needed; |
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191 | int i; |
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192 | |||
193 | printf("send IPC_M_DEBUG_THREAD_READ message\n"); |
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194 | rc = udebug_thread_read(app_phone, (unsigned)thread_hash_buf, |
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195 | THBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed); |
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196 | printf("-> %d\n", rc); |
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197 | if (rc < 0) return rc; |
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198 | |||
199 | n_threads = tb_copied / sizeof(unsigned); |
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200 | |||
201 | printf("thread IDs:"); |
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202 | for (i=0; i<n_threads; i++) { |
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203 | printf(" %u", thread_hash_buf[i]); |
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204 | } |
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205 | printf("\ntotal of %u threads\n", tb_needed/sizeof(unsigned)); |
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206 | |||
207 | return 0; |
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208 | } |
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209 | |||
210 | void event_thread_b(unsigned hash) |
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211 | { |
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212 | async_serialize_start(); |
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213 | printf("new thread, hash 0x%x\n", hash); |
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214 | async_serialize_end(); |
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215 | |||
216 | thread_debug_start(hash); |
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217 | } |
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218 | |||
219 | void debug_loop(void *thread_hash_arg) |
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220 | { |
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221 | int rc; |
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222 | unsigned ev_type; |
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223 | unsigned thread_hash; |
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224 | unsigned thread_id; |
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225 | unsigned val0, val1; |
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226 | |||
227 | thread_hash = (unsigned)thread_hash_arg; |
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228 | thread_id = next_thread_id++; |
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229 | |||
230 | printf("debug_loop(%d)\n", thread_id); |
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231 | |||
232 | while (!abort_debug) { |
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233 | |||
2918 | svoboda | 234 | printf("go\n"); |
2911 | svoboda | 235 | /* Run thread until an event occurs */ |
236 | rc = udebug_go(app_phone, thread_hash, |
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237 | &ev_type, &val0, &val1); |
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238 | |||
2918 | svoboda | 239 | printf("..ev type %d\n", ev_type); |
240 | |||
2911 | svoboda | 241 | // printf("rc = %d, ev_type=%d\n", rc, ev_type); |
242 | if (ev_type == UDEBUG_EVENT_FINISHED) { |
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243 | printf("thread %u debugging finished\n", thread_id); |
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244 | break; |
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245 | } |
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246 | |||
247 | if (rc >= 0) { |
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248 | switch (ev_type) { |
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249 | case UDEBUG_EVENT_STOP: |
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250 | printf("stop event\n"); |
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251 | printf("waiting for resume\n"); |
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252 | while (paused) { |
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253 | usleep(1000000); |
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254 | fibril_yield(); |
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255 | printf("."); |
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256 | } |
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257 | printf("resumed\n"); |
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258 | break; |
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259 | case UDEBUG_EVENT_THREAD_B: |
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260 | event_thread_b(val0); |
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261 | break; |
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262 | case UDEBUG_EVENT_THREAD_E: |
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263 | printf("thread 0x%x exited\n", val0); |
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264 | abort_debug = true; |
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265 | break; |
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2918 | svoboda | 266 | case UDEBUG_EVENT_BREAKPOINT: |
267 | printf("breakpoint reached\n"); |
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268 | usleep(2000*2000); |
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269 | break; |
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2911 | svoboda | 270 | default: |
271 | printf("unknown event type %d\n", ev_type); |
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272 | break; |
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273 | } |
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274 | } |
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275 | |||
276 | } |
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277 | |||
278 | printf("debug_loop(%d) exiting\n", thread_id); |
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279 | } |
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280 | |||
281 | void thread_debug_start(unsigned thread_hash) |
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282 | { |
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283 | fid_t fid; |
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284 | |||
285 | thash = thread_hash; |
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286 | |||
287 | fid = fibril_create(debug_loop, (void *)thread_hash); |
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288 | if (fid == 0) { |
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289 | printf("Warning: Failed creating fibril\n"); |
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290 | } |
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291 | fibril_add_ready(fid); |
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292 | } |
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293 | |||
294 | void debug_active_task(void) |
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295 | { |
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296 | int taskid; |
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297 | int i; |
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298 | int rc; |
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299 | int c; |
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300 | |||
301 | printf("Breakpoint Debugger\n"); |
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302 | printf("Press 'c' to connect\n"); |
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303 | while ((i = getchar()) != 'c') |
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304 | putchar(i); |
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305 | |||
306 | taskid = 14; |
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307 | rc = task_connect(taskid); |
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308 | if (rc < 0) { |
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309 | printf("Failed to connect to task %d\n", taskid); |
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310 | return; |
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311 | } |
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312 | |||
313 | printf("Connected to task %d\n", taskid); |
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314 | |||
315 | rc = get_thread_list(); |
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316 | if (rc < 0) { |
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317 | printf("Failed to get thread list (error %d)\n", rc); |
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318 | return; |
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319 | } |
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320 | |||
321 | abort_debug = false; |
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322 | |||
323 | for (i = 0; i < n_threads; i++) { |
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324 | thread_debug_start(thread_hash_buf[i]); |
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325 | } |
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326 | |||
327 | while (!quit) { |
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328 | printf("> "); |
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329 | read_line(in_buf, INBUF_SIZE); |
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330 | command_split(in_buf); |
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331 | if (cmd_argc == 0) continue; |
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332 | |||
333 | command_run(); |
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334 | } |
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335 | |||
336 | printf("terminate debugging session...\n"); |
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337 | abort_debug = true; |
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338 | udebug_end(app_phone); |
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339 | ipc_hangup(app_phone); |
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340 | |||
341 | printf("done\n"); |
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342 | return; |
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343 | } |
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344 | |||
345 | static void main_init(void) |
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346 | { |
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347 | next_thread_id = 1; |
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348 | paused = 0; |
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349 | } |
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350 | |||
351 | int main(void) |
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352 | { |
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353 | main_init(); |
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354 | |||
355 | while (1) { |
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356 | debug_active_task(); |
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357 | } |
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358 | } |
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359 | |||
360 | /** @} |
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361 | */ |