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  1. /** @addtogroup sctrace
  2.  * @{
  3.  */
  4. /** @file
  5.  */
  6.  
  7. #include <stdio.h>
  8. #include <unistd.h>
  9. #include <syscall.h>
  10. #include <ipc/ipc.h>
  11. #include <fibril.h>
  12. #include <errno.h>
  13. #include <udebug.h>
  14. #include <async.h>
  15.  
  16. #include "syscalls.h"
  17. #include "ipc.h"
  18. #include "errors.h"
  19. #include "debug_api.h"
  20.  
  21. #define THBUF_SIZE 64
  22. unsigned thread_hash_buf[THBUF_SIZE];
  23. unsigned n_threads;
  24.  
  25. int next_thread_id;
  26.  
  27. int phoneid;
  28. int abort_trace;
  29.  
  30. void thread_trace_start(unsigned thread_hash);
  31.  
  32.  
  33. int task_connect(int taskid)
  34. {
  35.     int rc;
  36.  
  37.     printf("ipc_connect_task(%d)...\n", taskid);
  38.     rc = ipc_connect_kbox(taskid);
  39.     printf("-> %d\n", rc);
  40.     phoneid = rc;
  41.     if (rc < 0) return rc;
  42.  
  43.     printf("debug_begin()\n");
  44.     rc = debug_begin(phoneid);
  45.     printf("-> %d\n", rc);
  46.     if (rc < 0) return rc;
  47.  
  48.     return 0;
  49. }
  50.  
  51. int get_thread_list(void)
  52. {
  53.     int rc;
  54.     int tb_copied;
  55.     int tb_needed;
  56.     int i;
  57.  
  58.  
  59.     printf("send IPC_M_DEBUG_THREAD_READ message\n");
  60.     rc = debug_thread_read(phoneid, (unsigned)thread_hash_buf,
  61.         THBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed);
  62.     printf("-> %d\n", rc);
  63.     if (rc < 0) return rc;
  64.  
  65.     n_threads = tb_copied / sizeof(unsigned);
  66.  
  67.     printf("thread IDs:");
  68.     for (i=0; i<n_threads; i++) {
  69.         printf(" %u", thread_hash_buf[i]);
  70.     }
  71.     printf("\ntotal of %u threads\n", tb_needed/sizeof(unsigned));
  72.  
  73.     return 0;
  74. }
  75.  
  76. void print_sc_retval(int retval, rv_type_t rv_type)
  77. {
  78.     printf (" -> ");
  79.     if (rv_type == RV_INTEGER) {
  80.         printf("%d", retval);
  81.     } else if (rv_type == RV_HASH) {
  82.         printf("0x%08x", retval);
  83.     } else if (rv_type == RV_ERRNO) {
  84.         if (retval >= -15 && retval <= 0) {
  85.             printf("%d %s (%s)", retval,
  86.                 err_desc[retval].name,
  87.                 err_desc[retval].desc);
  88.         } else {
  89.             printf("%d", retval);
  90.         }
  91.     } else if (rv_type == RV_INT_ERRNO) {
  92.         if (retval >= -15 && retval < 0) {
  93.             printf("%d %s (%s)", retval,
  94.                 err_desc[retval].name,
  95.                 err_desc[retval].desc);
  96.         } else {
  97.             printf("%d", retval);
  98.         }
  99.     }
  100.     putchar('\n');
  101. }
  102.  
  103. void print_sc_args(unsigned *sc_args, int n)
  104. {
  105.     int i;
  106.  
  107.     putchar('(');
  108.     if (n > 0) printf("%d", sc_args[0]);
  109.     for (i=1; i<n; i++) {
  110.         printf(", %d", sc_args[i]);
  111.     }
  112.     putchar(')');
  113. }
  114.  
  115. void sc_ipc_call_async_fast(unsigned *sc_args, int sc_rc)
  116. {
  117.     ipc_call_t call;
  118.     int phoneid;
  119.    
  120.     if (sc_rc == IPC_CALLRET_FATAL || sc_rc == IPC_CALLRET_TEMPORARY)
  121.         return;
  122.  
  123.     phoneid = sc_args[0];
  124.  
  125.     IPC_SET_METHOD(call, sc_args[1]);
  126.     IPC_SET_ARG1(call, sc_args[2]);
  127.     IPC_SET_ARG2(call, sc_args[3]);
  128.     IPC_SET_ARG3(call, sc_args[4]);
  129.     IPC_SET_ARG4(call, sc_args[5]);
  130.     IPC_SET_ARG5(call, 0);
  131.  
  132.     ipc_parse_call_out(phoneid, &call, sc_rc);
  133. }
  134.  
  135. void sc_ipc_call_async_slow(unsigned *sc_args, int sc_rc)
  136. {
  137.     ipc_call_t call;
  138.     int rc;
  139.  
  140.     if (sc_rc == IPC_CALLRET_FATAL || sc_rc == IPC_CALLRET_TEMPORARY)
  141.         return;
  142.  
  143.     memset(&call, 0, sizeof(call));
  144.     rc = debug_mem_read(phoneid, &call.args, sc_args[1], sizeof(call.args));
  145.  
  146.     if (rc >= 0) {
  147.         ipc_parse_call_out(sc_args[0], &call, sc_rc);
  148.     }
  149. }
  150.  
  151. void sc_ipc_call_sync_fast(unsigned *sc_args)
  152. {
  153.     ipc_call_t question, reply;
  154.     int rc;
  155.     int phoneidx;
  156.  
  157.     printf("sc_ipc_call_sync_fast()\n");
  158.     phoneidx = sc_args[0];
  159.  
  160.     IPC_SET_METHOD(question, sc_args[1]);
  161.     IPC_SET_ARG1(question, sc_args[2]);
  162.     IPC_SET_ARG2(question, sc_args[3]);
  163.     IPC_SET_ARG3(question, sc_args[4]);
  164.     IPC_SET_ARG4(question, 0);
  165.     IPC_SET_ARG5(question, 0);
  166.  
  167.     printf("memset\n");
  168.     memset(&reply, 0, sizeof(reply));
  169.     printf("debug_mem_read(phone=%d, buffer_ptr=%u, src_addr=%d, n=%d\n",
  170.         phoneid, &reply.args, sc_args[5], sizeof(reply.args));
  171.     rc = debug_mem_read(phoneid, &reply.args, sc_args[5], sizeof(reply.args));
  172.     printf("dmr->%d\n", rc);
  173.     if (rc < 0) return;
  174.  
  175.     printf("call ipc_parse_call_sync\n");
  176.     ipc_parse_call_sync(phoneidx, &question, &reply);
  177. }
  178.  
  179. void sc_ipc_call_sync_slow(unsigned *sc_args)
  180. {
  181.     ipc_call_t question, reply;
  182.     int rc;
  183.  
  184.     memset(&question, 0, sizeof(question));
  185.     rc = debug_mem_read(phoneid, &question.args, sc_args[1], sizeof(question.args));
  186.     printf("dmr->%d\n", rc);
  187.     if (rc < 0) return;
  188.  
  189.     memset(&reply, 0, sizeof(reply));
  190.     rc = debug_mem_read(phoneid, &reply.args, sc_args[2], sizeof(reply.args));
  191.     printf("dmr->%d\n", rc);
  192.     if (rc < 0) return;
  193.  
  194.     ipc_parse_call_sync(sc_args[0], &question, &reply);
  195. }
  196.  
  197. void sc_ipc_wait(unsigned *sc_args, int sc_rc)
  198. {
  199.     ipc_call_t call;
  200.     int rc;
  201.  
  202.     if (sc_rc == 0) return 0;
  203.  
  204.     memset(&call, 0, sizeof(call));
  205.     rc = debug_mem_read(phoneid, &call, sc_args[0], sizeof(call));
  206. //  printf("debug_mem_read(phone %d, dest %d, app-mem src %d, size %d -> %d\n",
  207. //      phoneid, (int)&call, sc_args[0], sizeof(call), rc);
  208.  
  209.     if (rc >= 0) {
  210.         ipc_parse_call_in(&call, sc_rc);
  211.     }
  212. }
  213.  
  214. void event_syscall(unsigned thread_id, unsigned thread_hash,  unsigned sc_id, int sc_rc)
  215. {
  216.     unsigned sc_args[6];
  217.     int rv_type;
  218.     int rc;
  219.  
  220.     /* Read syscall arguments */
  221.     rc = debug_args_read(phoneid, thread_hash, sc_args);
  222.  
  223.     async_serialize_start();
  224.  
  225. //  printf("[%d] ", thread_id);
  226.  
  227.     if (rc < 0) {
  228.         printf("error\n");
  229.         async_serialize_end();
  230.         return;
  231.     }
  232.  
  233.     /* Print syscall name, id and arguments */
  234.     printf("%s", syscall_desc[sc_id].name);
  235.     print_sc_args(sc_args, syscall_desc[sc_id].n_args);
  236.     rv_type = syscall_desc[sc_id].rv_type;
  237.     print_sc_retval(sc_rc, rv_type);
  238.  
  239.     switch (sc_id) {
  240.     case SYS_IPC_CALL_ASYNC_FAST:
  241.         sc_ipc_call_async_fast(sc_args, sc_rc);
  242.         break;
  243.     case SYS_IPC_CALL_ASYNC_SLOW:
  244.         sc_ipc_call_async_slow(sc_args, sc_rc);
  245.         break;
  246.     case SYS_IPC_CALL_SYNC_FAST:
  247.         sc_ipc_call_sync_fast(sc_args);
  248.         break;
  249.     case SYS_IPC_CALL_SYNC_SLOW:
  250.         sc_ipc_call_sync_slow(sc_args);
  251.         break;
  252.     case SYS_IPC_WAIT:
  253.         sc_ipc_wait(sc_args, sc_rc);
  254.         break;
  255.     default:
  256.         break;
  257.     }
  258.  
  259.     async_serialize_end();
  260. }
  261.  
  262. void event_new_thread(unsigned hash)
  263. {
  264.     async_serialize_start();
  265.     printf("new thread, hash 0x%x\n", hash);
  266.     async_serialize_end();
  267.  
  268.     thread_trace_start(hash);
  269. }
  270.  
  271. void trace_loop(void *thread_hash_arg)
  272. {
  273.     int rc;
  274.     unsigned ev_type;
  275.     unsigned thread_hash;
  276.     unsigned thread_id;
  277.     unsigned val0, val1;
  278.  
  279.     thread_hash = (unsigned)thread_hash_arg;
  280.     thread_id = next_thread_id++;
  281.  
  282.     printf("trace_loop(%d)\n", thread_id); 
  283.  
  284.     while (!abort_trace) {
  285.  
  286.         /* Run thread until an event occurs */
  287.         rc = debug_go(phoneid, thread_hash,
  288.             &ev_type, &val0, &val1);
  289.  
  290. //      printf("rc = %d, ev_type=%d\n", rc, ev_type);
  291.         if (ev_type == UDEBUG_EVENT_FINISHED) {
  292.             printf("thread %u debugging finished\n", thread_id);
  293.             break;
  294.         }
  295.  
  296.         if (rc >= 0) {
  297.             switch (ev_type) {
  298.             case UDEBUG_EVENT_SYSCALL:
  299.                 event_syscall(thread_id, thread_hash, val0, (int)val1);
  300.                 break;
  301.             case UDEBUG_EVENT_NEW_THREAD:
  302.                 event_new_thread(val0);
  303.                 break;
  304.             default:
  305.                 printf("unknown event type %d\n", ev_type);
  306.                 break;
  307.             }
  308.         }
  309.  
  310.     }
  311.  
  312.     printf("trace_loop(%d) exiting\n", thread_id);
  313. }
  314.  
  315. void thread_trace_start(unsigned thread_hash)
  316. {
  317.     fid_t fid;
  318.  
  319.     fid = fibril_create(trace_loop, (void *)thread_hash);
  320.     if (fid == 0) {
  321.         printf("Warning: Failed creating fibril\n");
  322.     }
  323.     fibril_add_ready(fid);
  324. }
  325.  
  326. void trace_active_task(void)
  327. {
  328.     int taskid;
  329.     int i;
  330.     int rc;
  331.  
  332.     printf("Syscall Tracer\n");
  333.     printf("Press 'c' to connect\n");
  334.     while ((i = getchar()) != 'c')
  335.         putchar(i);
  336.  
  337.     taskid = 14;
  338.     rc = task_connect(taskid);
  339.     if (rc < 0) {
  340.         printf("Failed to connect to task %d\n", taskid);
  341.         return;
  342.     }
  343.  
  344.     printf("Connected to task %d\n", taskid);
  345.  
  346.     ipcp_init();
  347.  
  348.     rc = get_thread_list();
  349.     if (rc < 0) {
  350.         printf("Failed to get thread list (error %d)\n", rc);
  351.         return;
  352.     }
  353.  
  354.     abort_trace = 0;
  355.  
  356.     for (i = 0; i < n_threads; i++) {
  357.         thread_trace_start(thread_hash_buf[i]);
  358.     }
  359.  
  360.     getchar();
  361.  
  362.     printf("terminate debugging session...\n");
  363.     abort_trace = 1;
  364.     debug_end(phoneid);
  365.     ipc_hangup(phoneid);
  366.  
  367.     ipcp_cleanup();
  368.  
  369.     printf("done\n");
  370.     return;
  371. }
  372.  
  373. int main(void)
  374. {
  375.     next_thread_id = 1;
  376.  
  377.     while (1) {
  378.         trace_active_task();
  379.     }
  380. }
  381.  
  382. /** @}
  383.  */
  384.