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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 | |
2854 | svoboda | 26 | volatile int print_cs; |
27 | |||
28 | void fcs_begin(volatile int *csvar) |
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29 | { |
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30 | while (*csvar != 0) { |
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31 | fibril_yield(); |
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32 | printf(" \b"); |
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33 | } |
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34 | |||
35 | *csvar = 1; |
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36 | } |
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37 | |||
38 | void fcs_end(volatile int *csvar) |
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39 | { |
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40 | *csvar = 0; |
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41 | } |
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42 | |||
2832 | svoboda | 43 | int task_connect(int taskid) |
44 | { |
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45 | int rc; |
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46 | |||
47 | printf("ipc_connect_task(%d)...\n", taskid); |
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48 | rc = ipc_connect_kbox(taskid); |
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49 | printf("-> %d\n", rc); |
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50 | phoneid = rc; |
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51 | if (rc < 0) return rc; |
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52 | |||
53 | printf("debug_begin()\n"); |
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54 | rc = debug_begin(phoneid); |
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55 | printf("-> %d\n", rc); |
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56 | if (rc < 0) return rc; |
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57 | |||
58 | return 0; |
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59 | } |
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60 | |||
61 | int get_thread_list(void) |
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62 | { |
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63 | int rc; |
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64 | int tb_copied; |
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65 | int tb_needed; |
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66 | int i; |
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67 | |||
68 | |||
69 | printf("send IPC_M_DEBUG_THREAD_READ message\n"); |
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70 | rc = debug_thread_read(phoneid, (unsigned)threadid_buf, |
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71 | TIDBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed); |
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72 | printf("-> %d\n", rc); |
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73 | if (rc < 0) return rc; |
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74 | |||
2850 | svoboda | 75 | n_threads = tb_copied / sizeof(unsigned); |
76 | |||
2832 | svoboda | 77 | printf("thread IDs:"); |
2850 | svoboda | 78 | for (i=0; i<n_threads; i++) { |
2832 | svoboda | 79 | printf(" %u", threadid_buf[i]); |
80 | } |
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81 | printf("\ntotal of %u threads\n", tb_needed/sizeof(unsigned)); |
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82 | |||
83 | return 0; |
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84 | } |
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85 | |||
86 | void print_sc_retval(int retval, rv_type_t rv_type) |
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87 | { |
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88 | printf (" -> "); |
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89 | if (rv_type == RV_INTEGER) { |
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90 | printf("%d", retval); |
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91 | } else if (rv_type == RV_HASH) { |
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92 | printf("0x%08x", retval); |
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93 | } else if (rv_type == RV_ERRNO) { |
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94 | if (retval >= -15 && retval <= 0) { |
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95 | printf("%d %s (%s)", retval, |
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96 | err_desc[retval].name, |
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97 | err_desc[retval].desc); |
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98 | } else { |
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99 | printf("%d", retval); |
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100 | } |
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101 | } else if (rv_type == RV_INT_ERRNO) { |
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102 | if (retval >= -15 && retval < 0) { |
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103 | printf("%d %s (%s)", retval, |
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104 | err_desc[retval].name, |
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105 | err_desc[retval].desc); |
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106 | } else { |
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107 | printf("%d", retval); |
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108 | } |
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109 | } |
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110 | putchar('\n'); |
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111 | } |
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112 | |||
113 | void print_sc_args(unsigned *sc_args, int n) |
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114 | { |
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115 | int i; |
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116 | |||
117 | putchar('('); |
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118 | if (n > 0) printf("%d", sc_args[0]); |
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119 | for (i=1; i<n; i++) { |
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120 | printf(", %d", sc_args[i]); |
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121 | } |
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122 | putchar(')'); |
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123 | } |
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124 | |||
125 | void sc_ipc_call_async_slow(unsigned *sc_args) |
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126 | { |
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127 | unsigned ipc_args[6]; |
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128 | int rc; |
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129 | |||
130 | memset(ipc_args, 0, sizeof(ipc_args)); |
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131 | rc = debug_mem_read(phoneid, ipc_args, sc_args[1], sizeof(ipc_args)); |
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132 | |||
133 | if (rc >= 0) { |
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134 | printf("args: (%u, %u, %u, %u, %u, %u)\n", |
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135 | ipc_args[0], ipc_args[1], ipc_args[2], |
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136 | ipc_args[3], ipc_args[4], ipc_args[5]); |
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137 | } |
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138 | } |
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139 | |||
2850 | svoboda | 140 | void trace_loop(void *thread_idx_arg) |
2835 | svoboda | 141 | { |
2832 | svoboda | 142 | int rc; |
143 | unsigned sc_args[6]; |
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144 | unsigned copied; |
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145 | unsigned ev_type; |
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146 | unsigned sc_id; |
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147 | int sc_rc; |
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148 | int rv_type; |
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2850 | svoboda | 149 | unsigned thread_idx; |
2832 | svoboda | 150 | |
2850 | svoboda | 151 | thread_idx = (unsigned)thread_idx_arg; |
152 | printf("trace_loop(%d)\n", thread_idx); |
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2835 | svoboda | 153 | |
154 | while (!abort_trace) { |
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155 | |||
2832 | svoboda | 156 | /* Run thread until a syscall is executed */ |
2850 | svoboda | 157 | rc = debug_go(phoneid, threadid_buf[thread_idx], |
2832 | svoboda | 158 | &ev_type, &sc_id, &sc_rc); |
159 | |||
2838 | svoboda | 160 | printf("rc = %d, ev_type=%d\n", rc, ev_type); |
161 | if (ev_type == UDEBUG_EVENT_FINISHED) { |
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2850 | svoboda | 162 | printf("thread %u debugging finished\n", threadid_buf[thread_idx]); |
2838 | svoboda | 163 | break; |
164 | } |
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165 | |||
2832 | svoboda | 166 | /* Read syscall arguments */ |
167 | if (rc >= 0) { |
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2850 | svoboda | 168 | rc = debug_args_read(phoneid, threadid_buf[thread_idx], |
2832 | svoboda | 169 | sc_args); |
170 | } |
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171 | |||
2854 | svoboda | 172 | // printf("[%d]:begin\n", thread_idx); |
173 | fcs_begin(&print_cs); |
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174 | // printf("[%d]:inside\n", thread_idx); |
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175 | |||
2850 | svoboda | 176 | printf("[%d] ", thread_idx); |
177 | |||
2832 | svoboda | 178 | /* Print syscall name, id and arguments */ |
179 | if (rc >= 0) { |
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180 | printf("%s", syscall_desc[sc_id].name); |
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181 | print_sc_args(sc_args, syscall_desc[sc_id].n_args); |
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182 | rv_type = syscall_desc[sc_id].rv_type; |
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183 | print_sc_retval(sc_rc, rv_type); |
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184 | } |
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185 | |||
2854 | svoboda | 186 | // printf("[%d]:end\n", thread_idx); |
187 | fcs_end(&print_cs); |
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188 | |||
2832 | svoboda | 189 | switch (sc_id) { |
190 | case SYS_IPC_CALL_ASYNC_SLOW: |
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191 | sc_ipc_call_async_slow(sc_args); |
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192 | break; |
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193 | default: |
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194 | break; |
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195 | } |
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196 | } |
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2835 | svoboda | 197 | |
2850 | svoboda | 198 | printf("trace_loop(%d) exiting\n", thread_idx); |
2832 | svoboda | 199 | } |
200 | |||
201 | |||
202 | void trace_active_task(void) |
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203 | { |
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204 | int taskid; |
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205 | int i; |
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206 | int rc; |
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2850 | svoboda | 207 | fid_t fid; |
2832 | svoboda | 208 | |
209 | printf("Syscall Tracer\n"); |
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210 | printf("Press 'c' to connect\n"); |
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211 | while ((i = getchar()) != 'c') |
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212 | putchar(i); |
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213 | |||
2850 | svoboda | 214 | taskid = 14; |
2832 | svoboda | 215 | rc = task_connect(taskid); |
216 | if (rc < 0) { |
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217 | printf("Failed to connect to task %d\n", taskid); |
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218 | return; |
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219 | } |
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220 | |||
221 | printf("Connected to task %d\n", taskid); |
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222 | |||
223 | rc = get_thread_list(); |
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224 | if (rc < 0) { |
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225 | printf("Failed to get thread list (error %d)\n", rc); |
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226 | return; |
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227 | } |
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228 | |||
2850 | svoboda | 229 | abort_trace = 0; |
2832 | svoboda | 230 | |
2850 | svoboda | 231 | for (i = 0; i < n_threads; i++) { |
2853 | svoboda | 232 | fid = fibril_create(trace_loop, (void *)i); |
2850 | svoboda | 233 | if (fid == 0) { |
234 | printf("Warning: Failed creating fibril\n"); |
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235 | } |
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236 | fibril_add_ready(fid); |
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237 | } |
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238 | |||
239 | getchar(); |
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240 | |||
241 | printf("terminate debugging session...\n"); |
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242 | abort_trace = 1; |
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2835 | svoboda | 243 | debug_end(phoneid); |
2850 | svoboda | 244 | ipc_hangup(phoneid); |
245 | |||
2832 | svoboda | 246 | printf("done\n"); |
247 | return; |
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248 | } |
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249 | |||
250 | int main(void) |
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251 | { |
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2854 | svoboda | 252 | print_cs = 0; |
253 | |||
2835 | svoboda | 254 | while (1) { |
255 | trace_active_task(); |
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256 | } |
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2832 | svoboda | 257 | } |
258 | |||
259 | /** @} |
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260 | */ |