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  1. /*
  2.  * Copyright (c) 2008 Jiri Svoboda
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup trace
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <stdio.h>
  36. #include <stdlib.h>
  37. #include <unistd.h>
  38. #include <syscall.h>
  39. #include <ipc/ipc.h>
  40. #include <fibril.h>
  41. #include <errno.h>
  42. #include <udebug.h>
  43. #include <async.h>
  44.  
  45. // Temporary: service and method names
  46. #include "proto.h"
  47. #include <ipc/services.h>
  48. #include "../../srv/vfs/vfs.h"
  49. #include "../../srv/console/console.h"
  50.  
  51. #include "syscalls.h"
  52. #include "ipcp.h"
  53. #include "errors.h"
  54.  
  55. #define THBUF_SIZE 64
  56. unsigned thread_hash_buf[THBUF_SIZE];
  57. unsigned n_threads;
  58.  
  59. int next_thread_id;
  60.  
  61. int phoneid;
  62. int abort_trace;
  63.  
  64. unsigned thash;
  65. volatile int paused;
  66.  
  67. void thread_trace_start(unsigned thread_hash);
  68.  
  69. static proto_t *proto_console;
  70.  
  71. static int task_connect(task_id_t task_id)
  72. {
  73.     int rc;
  74.  
  75.     printf("ipc_connect_task(%lld)... ", task_id);
  76.     rc = ipc_connect_kbox(task_id);
  77.     printf("-> %d\n", rc);
  78.     phoneid = rc;
  79.     if (rc < 0) return rc;
  80.  
  81.     printf("udebug_begin()... ");
  82.     rc = udebug_begin(phoneid);
  83.     printf("-> %d\n", rc);
  84.     if (rc < 0) return rc;
  85.  
  86.     printf("udebug_set_evmask(0x%x)... ", UDEBUG_EM_ALL);
  87.     rc = udebug_set_evmask(phoneid, UDEBUG_EM_ALL);
  88.     printf("-> %d\n", rc);
  89.     if (rc < 0) return rc;
  90.  
  91.     return 0;
  92. }
  93.  
  94. static int get_thread_list(void)
  95. {
  96.     int rc;
  97.     size_t tb_copied;
  98.     size_t tb_needed;
  99.     int i;
  100.  
  101.     printf("send IPC_M_DEBUG_THREAD_READ message\n");
  102.     rc = udebug_thread_read(phoneid, thread_hash_buf,
  103.         THBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed);
  104.     printf("-> %d\n", rc);
  105.     if (rc < 0) return rc;
  106.  
  107.     n_threads = tb_copied / sizeof(unsigned);
  108.  
  109.     printf("thread IDs:");
  110.     for (i=0; i<n_threads; i++) {
  111.         printf(" %u", thread_hash_buf[i]);
  112.     }
  113.     printf("\ntotal of %u threads\n", tb_needed/sizeof(unsigned));
  114.  
  115.     return 0;
  116. }
  117.  
  118. static void print_sc_retval(int retval, rv_type_t rv_type)
  119. {
  120.     printf (" -> ");
  121.     if (rv_type == RV_INTEGER) {
  122.         printf("%d", retval);
  123.     } else if (rv_type == RV_HASH) {
  124.         printf("0x%08x", retval);
  125.     } else if (rv_type == RV_ERRNO) {
  126.         if (retval >= -15 && retval <= 0) {
  127.             printf("%d %s (%s)", retval,
  128.                 err_desc[retval].name,
  129.                 err_desc[retval].desc);
  130.         } else {
  131.             printf("%d", retval);
  132.         }
  133.     } else if (rv_type == RV_INT_ERRNO) {
  134.         if (retval >= -15 && retval < 0) {
  135.             printf("%d %s (%s)", retval,
  136.                 err_desc[retval].name,
  137.                 err_desc[retval].desc);
  138.         } else {
  139.             printf("%d", retval);
  140.         }
  141.     }
  142.     putchar('\n');
  143. }
  144.  
  145. static void print_sc_args(unsigned *sc_args, int n)
  146. {
  147.     int i;
  148.  
  149.     putchar('(');
  150.     if (n > 0) printf("%d", sc_args[0]);
  151.     for (i=1; i<n; i++) {
  152.         printf(", %d", sc_args[i]);
  153.     }
  154.     putchar(')');
  155. }
  156.  
  157. static void sc_ipc_call_async_fast(unsigned *sc_args, int sc_rc)
  158. {
  159.     ipc_call_t call;
  160.     int phoneid;
  161.    
  162.     if (sc_rc == IPC_CALLRET_FATAL || sc_rc == IPC_CALLRET_TEMPORARY)
  163.         return;
  164.  
  165.     phoneid = sc_args[0];
  166.  
  167.     IPC_SET_METHOD(call, sc_args[1]);
  168.     IPC_SET_ARG1(call, sc_args[2]);
  169.     IPC_SET_ARG2(call, sc_args[3]);
  170.     IPC_SET_ARG3(call, sc_args[4]);
  171.     IPC_SET_ARG4(call, sc_args[5]);
  172.     IPC_SET_ARG5(call, 0);
  173.  
  174.     ipcp_call_out(phoneid, &call, sc_rc);
  175. }
  176.  
  177. static void sc_ipc_call_async_slow(unsigned *sc_args, int sc_rc)
  178. {
  179.     ipc_call_t call;
  180.     int rc;
  181.  
  182.     if (sc_rc == IPC_CALLRET_FATAL || sc_rc == IPC_CALLRET_TEMPORARY)
  183.         return;
  184.  
  185.     memset(&call, 0, sizeof(call));
  186.     rc = udebug_mem_read(phoneid, &call.args, sc_args[1], sizeof(call.args));
  187.  
  188.     if (rc >= 0) {
  189.         ipcp_call_out(sc_args[0], &call, sc_rc);
  190.     }
  191. }
  192.  
  193. static void sc_ipc_call_sync_fast(unsigned *sc_args)
  194. {
  195.     ipc_call_t question, reply;
  196.     int rc;
  197.     int phoneidx;
  198.  
  199. //  printf("sc_ipc_call_sync_fast()\n");
  200.     phoneidx = sc_args[0];
  201.  
  202.     IPC_SET_METHOD(question, sc_args[1]);
  203.     IPC_SET_ARG1(question, sc_args[2]);
  204.     IPC_SET_ARG2(question, sc_args[3]);
  205.     IPC_SET_ARG3(question, sc_args[4]);
  206.     IPC_SET_ARG4(question, 0);
  207.     IPC_SET_ARG5(question, 0);
  208.  
  209. //  printf("memset\n");
  210.     memset(&reply, 0, sizeof(reply));
  211. //  printf("udebug_mem_read(phone=%d, buffer_ptr=%u, src_addr=%d, n=%d\n",
  212. //      phoneid, &reply.args, sc_args[5], sizeof(reply.args));
  213.     rc = udebug_mem_read(phoneid, &reply.args, sc_args[5], sizeof(reply.args));
  214. //  printf("dmr->%d\n", rc);
  215.     if (rc < 0) return;
  216.  
  217. //  printf("call ipc_call_sync\n");
  218.     ipcp_call_sync(phoneidx, &question, &reply);
  219. }
  220.  
  221. static void sc_ipc_call_sync_slow(unsigned *sc_args)
  222. {
  223.     ipc_call_t question, reply;
  224.     int rc;
  225.  
  226.     memset(&question, 0, sizeof(question));
  227.     rc = udebug_mem_read(phoneid, &question.args, sc_args[1], sizeof(question.args));
  228.     printf("dmr->%d\n", rc);
  229.     if (rc < 0) return;
  230.  
  231.     memset(&reply, 0, sizeof(reply));
  232.     rc = udebug_mem_read(phoneid, &reply.args, sc_args[2], sizeof(reply.args));
  233.     printf("dmr->%d\n", rc);
  234.     if (rc < 0) return;
  235.  
  236.     ipcp_call_sync(sc_args[0], &question, &reply);
  237. }
  238.  
  239. static void sc_ipc_wait(unsigned *sc_args, int sc_rc)
  240. {
  241.     ipc_call_t call;
  242.     int rc;
  243.  
  244.     if (sc_rc == 0) return;
  245.  
  246.     memset(&call, 0, sizeof(call));
  247.     rc = udebug_mem_read(phoneid, &call, sc_args[0], sizeof(call));
  248. //  printf("udebug_mem_read(phone %d, dest %d, app-mem src %d, size %d -> %d\n",
  249. //      phoneid, (int)&call, sc_args[0], sizeof(call), rc);
  250.  
  251.     if (rc >= 0) {
  252.         ipcp_call_in(&call, sc_rc);
  253.     }
  254. }
  255.  
  256. static void event_syscall_b(unsigned thread_id, unsigned thread_hash,  unsigned sc_id, int sc_rc)
  257. {
  258.     unsigned sc_args[6];
  259.     int rc;
  260.  
  261.     /* Read syscall arguments */
  262.     rc = udebug_args_read(phoneid, thread_hash, sc_args);
  263.  
  264.     async_serialize_start();
  265.  
  266. //  printf("[%d] ", thread_id);
  267.  
  268.     if (rc < 0) {
  269.         printf("error\n");
  270.         async_serialize_end();
  271.         return;
  272.     }
  273.  
  274.     /* Print syscall name, id and arguments */
  275.     printf("%s", syscall_desc[sc_id].name);
  276.     print_sc_args(sc_args, syscall_desc[sc_id].n_args);
  277.  
  278.     async_serialize_end();
  279. }
  280.  
  281. static void event_syscall_e(unsigned thread_id, unsigned thread_hash,  unsigned sc_id, int sc_rc)
  282. {
  283.     unsigned sc_args[6];
  284.     int rv_type;
  285.     int rc;
  286.  
  287.     /* Read syscall arguments */
  288.     rc = udebug_args_read(phoneid, thread_hash, sc_args);
  289.  
  290.     async_serialize_start();
  291.  
  292. //  printf("[%d] ", thread_id);
  293.  
  294.     if (rc < 0) {
  295.         printf("error\n");
  296.         async_serialize_end();
  297.         return;
  298.     }
  299.  
  300.     rv_type = syscall_desc[sc_id].rv_type;
  301.     print_sc_retval(sc_rc, rv_type);
  302.  
  303.     switch (sc_id) {
  304.     case SYS_IPC_CALL_ASYNC_FAST:
  305.         sc_ipc_call_async_fast(sc_args, sc_rc);
  306.         break;
  307.     case SYS_IPC_CALL_ASYNC_SLOW:
  308.         sc_ipc_call_async_slow(sc_args, sc_rc);
  309.         break;
  310.     case SYS_IPC_CALL_SYNC_FAST:
  311.         sc_ipc_call_sync_fast(sc_args);
  312.         break;
  313.     case SYS_IPC_CALL_SYNC_SLOW:
  314.         sc_ipc_call_sync_slow(sc_args);
  315.         break;
  316.     case SYS_IPC_WAIT:
  317.         sc_ipc_wait(sc_args, sc_rc);
  318.         break;
  319.     default:
  320.         break;
  321.     }
  322.  
  323.     async_serialize_end();
  324. }
  325.  
  326. static void event_thread_b(unsigned hash)
  327. {
  328.     async_serialize_start();
  329.     printf("new thread, hash 0x%x\n", hash);
  330.     async_serialize_end();
  331.  
  332.     thread_trace_start(hash);
  333. }
  334.  
  335. static int trace_loop(void *thread_hash_arg)
  336. {
  337.     int rc;
  338.     unsigned ev_type;
  339.     unsigned thread_hash;
  340.     unsigned thread_id;
  341.     unsigned val0, val1;
  342.  
  343.     thread_hash = (unsigned)thread_hash_arg;
  344.     thread_id = next_thread_id++;
  345.  
  346.     printf("trace_loop(%d)\n", thread_id); 
  347.  
  348.     while (!abort_trace) {
  349.  
  350.         /* Run thread until an event occurs */
  351.         rc = udebug_go(phoneid, thread_hash,
  352.             &ev_type, &val0, &val1);
  353.  
  354. //      printf("rc = %d, ev_type=%d\n", rc, ev_type);
  355.         if (ev_type == UDEBUG_EVENT_FINISHED) {
  356.             printf("thread %u debugging finished\n", thread_id);
  357.             break;
  358.         }
  359.  
  360.         if (rc >= 0) {
  361.             switch (ev_type) {
  362.             case UDEBUG_EVENT_SYSCALL_B:
  363.                 event_syscall_b(thread_id, thread_hash, val0, (int)val1);
  364.                 break;
  365.             case UDEBUG_EVENT_SYSCALL_E:
  366.                 event_syscall_e(thread_id, thread_hash, val0, (int)val1);
  367.                 break;
  368.             case UDEBUG_EVENT_STOP:
  369.                 printf("stop event\n");
  370.                 printf("waiting for resume\n");
  371.                 while (paused) {
  372.                     usleep(1000000);
  373.                     fibril_yield();
  374.                     printf(".");
  375.                 }
  376.                 printf("resumed\n");
  377.                 break;
  378.             case UDEBUG_EVENT_THREAD_B:
  379.                 event_thread_b(val0);
  380.                 break;
  381.             case UDEBUG_EVENT_THREAD_E:
  382.                 printf("thread 0x%x exited\n", val0);
  383.                 abort_trace = 1;
  384.                 break;
  385.             default:
  386.                 printf("unknown event type %d\n", ev_type);
  387.                 break;
  388.             }
  389.         }
  390.  
  391.     }
  392.  
  393.     printf("trace_loop(%d) exiting\n", thread_id);
  394.     return 0;
  395. }
  396.  
  397. void thread_trace_start(unsigned thread_hash)
  398. {
  399.     fid_t fid;
  400.  
  401.     thash = thread_hash;
  402.  
  403.     fid = fibril_create(trace_loop, (void *)thread_hash);
  404.     if (fid == 0) {
  405.         printf("Warning: Failed creating fibril\n");
  406.     }
  407.     fibril_add_ready(fid);
  408. }
  409.  
  410. static void trace_active_task(task_id_t task_id)
  411. {
  412.     int i;
  413.     int rc;
  414.     int c;
  415.  
  416.     printf("Syscall Tracer\n");
  417.  
  418.     rc = task_connect(task_id);
  419.     if (rc < 0) {
  420.         printf("Failed to connect to task %lld\n", task_id);
  421.         return;
  422.     }
  423.  
  424.     printf("Connected to task %lld\n", task_id);
  425.  
  426.     ipcp_init();
  427.     ipcp_connection_set(1, 0, proto_console);
  428.  
  429.     rc = get_thread_list();
  430.     if (rc < 0) {
  431.         printf("Failed to get thread list (error %d)\n", rc);
  432.         return;
  433.     }
  434.  
  435.     abort_trace = 0;
  436.  
  437.     for (i = 0; i < n_threads; i++) {
  438.         thread_trace_start(thread_hash_buf[i]);
  439.     }
  440.  
  441.     while(1) {
  442.         c = getchar();
  443.         if (c == 'q') break;
  444.         if (c == 'p') {
  445.             paused = 1;
  446.             rc = udebug_stop(phoneid, thash);
  447.             printf("stop -> %d\n", rc);
  448.         }
  449.         if (c == 'r') {
  450.             paused = 0;
  451.         }
  452.     }
  453.  
  454.     printf("terminate debugging session...\n");
  455.     abort_trace = 1;
  456.     udebug_end(phoneid);
  457.     ipc_hangup(phoneid);
  458.  
  459.     ipcp_cleanup();
  460.  
  461.     printf("done\n");
  462.     return;
  463. }
  464.  
  465. static void main_init(void)
  466. {
  467.     proto_t *p;
  468.     oper_t *o;
  469.  
  470.     next_thread_id = 1;
  471.     paused = 0;
  472.  
  473.     proto_init();
  474.  
  475.     p = proto_new("vfs");
  476.     o = oper_new("read");
  477.     proto_add_oper(p, VFS_READ, o);
  478.     o = oper_new("write");
  479.     proto_add_oper(p, VFS_WRITE, o);
  480.     o = oper_new("truncate");
  481.     proto_add_oper(p, VFS_TRUNCATE, o);
  482.     o = oper_new("mount");
  483.     proto_add_oper(p, VFS_MOUNT, o);
  484.     o = oper_new("unmount");
  485.     proto_add_oper(p, VFS_UNMOUNT, o);
  486.  
  487.     proto_register(SERVICE_VFS, p);
  488.  
  489.     p = proto_new("console");
  490.     o = oper_new("getchar");
  491.     proto_add_oper(p, CONSOLE_GETCHAR, o);
  492.     o = oper_new("putchar");
  493.     proto_add_oper(p, CONSOLE_PUTCHAR, o);
  494.     o = oper_new("clear");
  495.     proto_add_oper(p, CONSOLE_CLEAR, o);
  496.     o = oper_new("goto");
  497.     proto_add_oper(p, CONSOLE_GOTO, o);
  498.     o = oper_new("getsize");
  499.     proto_add_oper(p, CONSOLE_GETSIZE, o);
  500.     o = oper_new("flush");
  501.     proto_add_oper(p, CONSOLE_FLUSH, o);
  502.     o = oper_new("set_style");
  503.     proto_add_oper(p, CONSOLE_SET_STYLE, o);
  504.     o = oper_new("cursor_visibility");
  505.     proto_add_oper(p, CONSOLE_CURSOR_VISIBILITY, o);
  506.     o = oper_new("flush");
  507.     proto_add_oper(p, CONSOLE_FLUSH, o);
  508.  
  509.     proto_console = p;
  510.     proto_register(SERVICE_CONSOLE, p);
  511. }
  512.  
  513. static void print_syntax()
  514. {
  515.     printf("syntax: trace <task_id>\n");
  516. }
  517.  
  518. int main(int argc, char *argv[])
  519. {
  520.     task_id_t task_id;
  521.     char *err_p;
  522.  
  523.     if (argc != 2) {
  524.         printf("Mising argument\n");
  525.         print_syntax();
  526.         return 1;
  527.     }
  528.  
  529.     task_id = strtol(argv[1], &err_p, 10);
  530.  
  531.     if (*err_p) {
  532.         printf("Task ID syntax error\n");
  533.         print_syntax();
  534.         return 1;
  535.     }
  536.  
  537.     main_init();
  538.     trace_active_task(task_id);
  539. }
  540.  
  541. /** @}
  542.  */
  543.