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Rev | Author | Line No. | Line |
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2832 | svoboda | 1 | /** @addtogroup sctrace |
2 | * @{ |
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3 | */ |
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4 | /** @file |
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5 | */ |
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6 | |||
7 | #include <stdio.h> |
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8 | #include <unistd.h> |
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9 | #include <syscall.h> |
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10 | #include <ipc/ipc.h> |
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2835 | svoboda | 11 | #include <fibril.h> |
12 | #include <errno.h> |
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2838 | svoboda | 13 | #include <udebug.h> |
2862 | svoboda | 14 | #include <async.h> |
2832 | svoboda | 15 | |
16 | #include "syscalls.h" |
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17 | #include "errors.h" |
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18 | #include "debug_api.h" |
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19 | |||
20 | #define TIDBUF_SIZE 64 |
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21 | unsigned threadid_buf[TIDBUF_SIZE]; |
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2850 | svoboda | 22 | unsigned n_threads; |
2832 | svoboda | 23 | |
24 | int phoneid; |
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2835 | svoboda | 25 | int abort_trace; |
2832 | svoboda | 26 | |
27 | int task_connect(int taskid) |
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28 | { |
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29 | int rc; |
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30 | |||
31 | printf("ipc_connect_task(%d)...\n", taskid); |
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32 | rc = ipc_connect_kbox(taskid); |
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33 | printf("-> %d\n", rc); |
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34 | phoneid = rc; |
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35 | if (rc < 0) return rc; |
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36 | |||
37 | printf("debug_begin()\n"); |
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38 | rc = debug_begin(phoneid); |
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39 | printf("-> %d\n", rc); |
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40 | if (rc < 0) return rc; |
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41 | |||
42 | return 0; |
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43 | } |
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44 | |||
45 | int get_thread_list(void) |
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46 | { |
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47 | int rc; |
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48 | int tb_copied; |
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49 | int tb_needed; |
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50 | int i; |
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51 | |||
52 | |||
53 | printf("send IPC_M_DEBUG_THREAD_READ message\n"); |
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54 | rc = debug_thread_read(phoneid, (unsigned)threadid_buf, |
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55 | TIDBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed); |
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56 | printf("-> %d\n", rc); |
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57 | if (rc < 0) return rc; |
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58 | |||
2850 | svoboda | 59 | n_threads = tb_copied / sizeof(unsigned); |
60 | |||
2832 | svoboda | 61 | printf("thread IDs:"); |
2850 | svoboda | 62 | for (i=0; i<n_threads; i++) { |
2832 | svoboda | 63 | printf(" %u", threadid_buf[i]); |
64 | } |
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65 | printf("\ntotal of %u threads\n", tb_needed/sizeof(unsigned)); |
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66 | |||
67 | return 0; |
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68 | } |
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69 | |||
70 | void print_sc_retval(int retval, rv_type_t rv_type) |
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71 | { |
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72 | printf (" -> "); |
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73 | if (rv_type == RV_INTEGER) { |
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74 | printf("%d", retval); |
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75 | } else if (rv_type == RV_HASH) { |
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76 | printf("0x%08x", retval); |
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77 | } else if (rv_type == RV_ERRNO) { |
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78 | if (retval >= -15 && retval <= 0) { |
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79 | printf("%d %s (%s)", retval, |
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80 | err_desc[retval].name, |
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81 | err_desc[retval].desc); |
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82 | } else { |
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83 | printf("%d", retval); |
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84 | } |
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85 | } else if (rv_type == RV_INT_ERRNO) { |
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86 | if (retval >= -15 && retval < 0) { |
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87 | printf("%d %s (%s)", retval, |
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88 | err_desc[retval].name, |
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89 | err_desc[retval].desc); |
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90 | } else { |
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91 | printf("%d", retval); |
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92 | } |
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93 | } |
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94 | putchar('\n'); |
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95 | } |
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96 | |||
97 | void print_sc_args(unsigned *sc_args, int n) |
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98 | { |
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99 | int i; |
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100 | |||
101 | putchar('('); |
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102 | if (n > 0) printf("%d", sc_args[0]); |
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103 | for (i=1; i<n; i++) { |
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104 | printf(", %d", sc_args[i]); |
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105 | } |
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106 | putchar(')'); |
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107 | } |
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108 | |||
109 | void sc_ipc_call_async_slow(unsigned *sc_args) |
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110 | { |
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111 | unsigned ipc_args[6]; |
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112 | int rc; |
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113 | |||
114 | memset(ipc_args, 0, sizeof(ipc_args)); |
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115 | rc = debug_mem_read(phoneid, ipc_args, sc_args[1], sizeof(ipc_args)); |
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116 | |||
117 | if (rc >= 0) { |
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118 | printf("args: (%u, %u, %u, %u, %u, %u)\n", |
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119 | ipc_args[0], ipc_args[1], ipc_args[2], |
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120 | ipc_args[3], ipc_args[4], ipc_args[5]); |
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121 | } |
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122 | } |
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123 | |||
2850 | svoboda | 124 | void trace_loop(void *thread_idx_arg) |
2835 | svoboda | 125 | { |
2832 | svoboda | 126 | int rc; |
127 | unsigned sc_args[6]; |
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128 | unsigned copied; |
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129 | unsigned ev_type; |
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130 | unsigned sc_id; |
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131 | int sc_rc; |
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132 | int rv_type; |
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2850 | svoboda | 133 | unsigned thread_idx; |
2832 | svoboda | 134 | |
2850 | svoboda | 135 | thread_idx = (unsigned)thread_idx_arg; |
136 | printf("trace_loop(%d)\n", thread_idx); |
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2835 | svoboda | 137 | |
138 | while (!abort_trace) { |
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139 | |||
2832 | svoboda | 140 | /* Run thread until a syscall is executed */ |
2850 | svoboda | 141 | rc = debug_go(phoneid, threadid_buf[thread_idx], |
2832 | svoboda | 142 | &ev_type, &sc_id, &sc_rc); |
143 | |||
2838 | svoboda | 144 | printf("rc = %d, ev_type=%d\n", rc, ev_type); |
145 | if (ev_type == UDEBUG_EVENT_FINISHED) { |
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2850 | svoboda | 146 | printf("thread %u debugging finished\n", threadid_buf[thread_idx]); |
2838 | svoboda | 147 | break; |
148 | } |
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149 | |||
2832 | svoboda | 150 | /* Read syscall arguments */ |
151 | if (rc >= 0) { |
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2850 | svoboda | 152 | rc = debug_args_read(phoneid, threadid_buf[thread_idx], |
2832 | svoboda | 153 | sc_args); |
154 | } |
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155 | |||
2862 | svoboda | 156 | async_serialize_start(); |
2854 | svoboda | 157 | |
2850 | svoboda | 158 | printf("[%d] ", thread_idx); |
159 | |||
2832 | svoboda | 160 | /* Print syscall name, id and arguments */ |
161 | if (rc >= 0) { |
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162 | printf("%s", syscall_desc[sc_id].name); |
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163 | print_sc_args(sc_args, syscall_desc[sc_id].n_args); |
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164 | rv_type = syscall_desc[sc_id].rv_type; |
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165 | print_sc_retval(sc_rc, rv_type); |
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166 | } |
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167 | |||
2862 | svoboda | 168 | async_serialize_end(); |
2854 | svoboda | 169 | |
2832 | svoboda | 170 | switch (sc_id) { |
171 | case SYS_IPC_CALL_ASYNC_SLOW: |
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172 | sc_ipc_call_async_slow(sc_args); |
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173 | break; |
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174 | default: |
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175 | break; |
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176 | } |
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177 | } |
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2835 | svoboda | 178 | |
2850 | svoboda | 179 | printf("trace_loop(%d) exiting\n", thread_idx); |
2832 | svoboda | 180 | } |
181 | |||
182 | |||
183 | void trace_active_task(void) |
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184 | { |
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185 | int taskid; |
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186 | int i; |
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187 | int rc; |
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2850 | svoboda | 188 | fid_t fid; |
2832 | svoboda | 189 | |
190 | printf("Syscall Tracer\n"); |
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191 | printf("Press 'c' to connect\n"); |
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192 | while ((i = getchar()) != 'c') |
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193 | putchar(i); |
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194 | |||
2850 | svoboda | 195 | taskid = 14; |
2832 | svoboda | 196 | rc = task_connect(taskid); |
197 | if (rc < 0) { |
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198 | printf("Failed to connect to task %d\n", taskid); |
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199 | return; |
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200 | } |
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201 | |||
202 | printf("Connected to task %d\n", taskid); |
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203 | |||
204 | rc = get_thread_list(); |
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205 | if (rc < 0) { |
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206 | printf("Failed to get thread list (error %d)\n", rc); |
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207 | return; |
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208 | } |
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209 | |||
2850 | svoboda | 210 | abort_trace = 0; |
2832 | svoboda | 211 | |
2850 | svoboda | 212 | for (i = 0; i < n_threads; i++) { |
2853 | svoboda | 213 | fid = fibril_create(trace_loop, (void *)i); |
2850 | svoboda | 214 | if (fid == 0) { |
215 | printf("Warning: Failed creating fibril\n"); |
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216 | } |
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217 | fibril_add_ready(fid); |
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218 | } |
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219 | |||
220 | getchar(); |
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221 | |||
222 | printf("terminate debugging session...\n"); |
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223 | abort_trace = 1; |
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2835 | svoboda | 224 | debug_end(phoneid); |
2850 | svoboda | 225 | ipc_hangup(phoneid); |
226 | |||
2832 | svoboda | 227 | printf("done\n"); |
228 | return; |
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229 | } |
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230 | |||
231 | int main(void) |
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232 | { |
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2835 | svoboda | 233 | while (1) { |
234 | trace_active_task(); |
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235 | } |
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2832 | svoboda | 236 | } |
237 | |||
238 | /** @} |
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239 | */ |