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