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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 sctrace
  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. #include "debug_api.h"
  55.  
  56. #define THBUF_SIZE 64
  57. unsigned thread_hash_buf[THBUF_SIZE];
  58. unsigned n_threads;
  59.  
  60. int next_thread_id;
  61.  
  62. int phoneid;
  63. int abort_trace;
  64.  
  65. unsigned thash;
  66. volatile int paused;
  67.  
  68. void thread_trace_start(unsigned thread_hash);
  69.  
  70. static proto_t *proto_console;
  71.  
  72. int task_connect(int taskid)
  73. {
  74.     int rc;
  75.  
  76.     printf("ipc_connect_task(%d)... ", taskid);
  77.     rc = ipc_connect_kbox(taskid);
  78.     printf("-> %d\n", rc);
  79.     phoneid = rc;
  80.     if (rc < 0) return rc;
  81.  
  82.     printf("debug_begin()... ");
  83.     rc = debug_begin(phoneid);
  84.     printf("-> %d\n", rc);
  85.     if (rc < 0) return rc;
  86.  
  87.     printf("debug_set_evmask(0x%x)... ", UDEBUG_EM_ALL);
  88.     rc = debug_set_evmask(phoneid, UDEBUG_EM_ALL);
  89.     printf("-> %d\n", rc);
  90.     if (rc < 0) return rc;
  91.  
  92.     return 0;
  93. }
  94.  
  95. int get_thread_list(void)
  96. {
  97.     int rc;
  98.     int tb_copied;
  99.     int tb_needed;
  100.     int i;
  101.  
  102.  
  103.     printf("send IPC_M_DEBUG_THREAD_READ message\n");
  104.     rc = debug_thread_read(phoneid, (unsigned)thread_hash_buf,
  105.         THBUF_SIZE*sizeof(unsigned), &tb_copied, &tb_needed);
  106.     printf("-> %d\n", rc);
  107.     if (rc < 0) return rc;
  108.  
  109.     n_threads = tb_copied / sizeof(unsigned);
  110.  
  111.     printf("thread IDs:");
  112.     for (i=0; i<n_threads; i++) {
  113.         printf(" %u", thread_hash_buf[i]);
  114.     }
  115.     printf("\ntotal of %u threads\n", tb_needed/sizeof(unsigned));
  116.  
  117.     return 0;
  118. }
  119.  
  120. void print_sc_retval(int retval, rv_type_t rv_type)
  121. {
  122.     printf (" -> ");
  123.     if (rv_type == RV_INTEGER) {
  124.         printf("%d", retval);
  125.     } else if (rv_type == RV_HASH) {
  126.         printf("0x%08x", retval);
  127.     } else if (rv_type == RV_ERRNO) {
  128.         if (retval >= -15 && retval <= 0) {
  129.             printf("%d %s (%s)", retval,
  130.                 err_desc[retval].name,
  131.                 err_desc[retval].desc);
  132.         } else {
  133.             printf("%d", retval);
  134.         }
  135.     } else if (rv_type == RV_INT_ERRNO) {
  136.         if (retval >= -15 && retval < 0) {
  137.             printf("%d %s (%s)", retval,
  138.                 err_desc[retval].name,
  139.                 err_desc[retval].desc);
  140.         } else {
  141.             printf("%d", retval);
  142.         }
  143.     }
  144.     putchar('\n');
  145. }
  146.  
  147. void print_sc_args(unsigned *sc_args, int n)
  148. {
  149.     int i;
  150.  
  151.     putchar('(');
  152.     if (n > 0) printf("%d", sc_args[0]);
  153.     for (i=1; i<n; i++) {
  154.         printf(", %d", sc_args[i]);
  155.     }
  156.     putchar(')');
  157. }
  158.  
  159. void sc_ipc_call_async_fast(unsigned *sc_args, int sc_rc)
  160. {
  161.     ipc_call_t call;
  162.     int phoneid;
  163.    
  164.     if (sc_rc == IPC_CALLRET_FATAL || sc_rc == IPC_CALLRET_TEMPORARY)
  165.         return;
  166.  
  167.     phoneid = sc_args[0];
  168.  
  169.     IPC_SET_METHOD(call, sc_args[1]);
  170.     IPC_SET_ARG1(call, sc_args[2]);
  171.     IPC_SET_ARG2(call, sc_args[3]);
  172.     IPC_SET_ARG3(call, sc_args[4]);
  173.     IPC_SET_ARG4(call, sc_args[5]);
  174.     IPC_SET_ARG5(call, 0);
  175.  
  176.     ipcp_call_out(phoneid, &call, sc_rc);
  177. }
  178.  
  179. void sc_ipc_call_async_slow(unsigned *sc_args, int sc_rc)
  180. {
  181.     ipc_call_t call;
  182.     int rc;
  183.  
  184.     if (sc_rc == IPC_CALLRET_FATAL || sc_rc == IPC_CALLRET_TEMPORARY)
  185.         return;
  186.  
  187.     memset(&call, 0, sizeof(call));
  188.     rc = debug_mem_read(phoneid, &call.args, sc_args[1], sizeof(call.args));
  189.  
  190.     if (rc >= 0) {
  191.         ipcp_call_out(sc_args[0], &call, sc_rc);
  192.     }
  193. }
  194.  
  195. void sc_ipc_call_sync_fast(unsigned *sc_args)
  196. {
  197.     ipc_call_t question, reply;
  198.     int rc;
  199.     int phoneidx;
  200.  
  201. //  printf("sc_ipc_call_sync_fast()\n");
  202.     phoneidx = sc_args[0];
  203.  
  204.     IPC_SET_METHOD(question, sc_args[1]);
  205.     IPC_SET_ARG1(question, sc_args[2]);
  206.     IPC_SET_ARG2(question, sc_args[3]);
  207.     IPC_SET_ARG3(question, sc_args[4]);
  208.     IPC_SET_ARG4(question, 0);
  209.     IPC_SET_ARG5(question, 0);
  210.  
  211. //  printf("memset\n");
  212.     memset(&reply, 0, sizeof(reply));
  213. //  printf("debug_mem_read(phone=%d, buffer_ptr=%u, src_addr=%d, n=%d\n",
  214. //      phoneid, &reply.args, sc_args[5], sizeof(reply.args));
  215.     rc = debug_mem_read(phoneid, &reply.args, sc_args[5], sizeof(reply.args));
  216. //  printf("dmr->%d\n", rc);
  217.     if (rc < 0) return;
  218.  
  219. //  printf("call ipc_call_sync\n");
  220.     ipcp_call_sync(phoneidx, &question, &reply);
  221. }
  222.  
  223. void sc_ipc_call_sync_slow(unsigned *sc_args)
  224. {
  225.     ipc_call_t question, reply;
  226.     int rc;
  227.  
  228.     memset(&question, 0, sizeof(question));
  229.     rc = debug_mem_read(phoneid, &question.args, sc_args[1], sizeof(question.args));
  230.     printf("dmr->%d\n", rc);
  231.     if (rc < 0) return;
  232.  
  233.     memset(&reply, 0, sizeof(reply));
  234.     rc = debug_mem_read(phoneid, &reply.args, sc_args[2], sizeof(reply.args));
  235.     printf("dmr->%d\n", rc);
  236.     if (rc < 0) return;
  237.  
  238.     ipcp_call_sync(sc_args[0], &question, &reply);
  239. }
  240.  
  241. void sc_ipc_wait(unsigned *sc_args, int sc_rc)
  242. {
  243.     ipc_call_t call;
  244.     int rc;
  245.  
  246.     if (sc_rc == 0) return 0;
  247.  
  248.     memset(&call, 0, sizeof(call));
  249.     rc = debug_mem_read(phoneid, &call, sc_args[0], sizeof(call));
  250. //  printf("debug_mem_read(phone %d, dest %d, app-mem src %d, size %d -> %d\n",
  251. //      phoneid, (int)&call, sc_args[0], sizeof(call), rc);
  252.  
  253.     if (rc >= 0) {
  254.         ipcp_call_in(&call, sc_rc);
  255.     }
  256. }
  257.  
  258. void event_syscall(unsigned thread_id, unsigned thread_hash,  unsigned sc_id, int sc_rc)
  259. {
  260.     unsigned sc_args[6];
  261.     int rv_type;
  262.     int rc;
  263.  
  264.     /* Read syscall arguments */
  265.     rc = debug_args_read(phoneid, thread_hash, sc_args);
  266.  
  267.     async_serialize_start();
  268.  
  269. //  printf("[%d] ", thread_id);
  270.  
  271.     if (rc < 0) {
  272.         printf("error\n");
  273.         async_serialize_end();
  274.         return;
  275.     }
  276.  
  277.     /* Print syscall name, id and arguments */
  278.     printf("%s", syscall_desc[sc_id].name);
  279.     print_sc_args(sc_args, syscall_desc[sc_id].n_args);
  280.     rv_type = syscall_desc[sc_id].rv_type;
  281.     print_sc_retval(sc_rc, rv_type);
  282.  
  283.     switch (sc_id) {
  284.     case SYS_IPC_CALL_ASYNC_FAST:
  285.         sc_ipc_call_async_fast(sc_args, sc_rc);
  286.         break;
  287.     case SYS_IPC_CALL_ASYNC_SLOW:
  288.         sc_ipc_call_async_slow(sc_args, sc_rc);
  289.         break;
  290.     case SYS_IPC_CALL_SYNC_FAST:
  291.         sc_ipc_call_sync_fast(sc_args);
  292.         break;
  293.     case SYS_IPC_CALL_SYNC_SLOW:
  294.         sc_ipc_call_sync_slow(sc_args);
  295.         break;
  296.     case SYS_IPC_WAIT:
  297.         sc_ipc_wait(sc_args, sc_rc);
  298.         break;
  299.     default:
  300.         break;
  301.     }
  302.  
  303.     async_serialize_end();
  304. }
  305.  
  306. void event_new_thread(unsigned hash)
  307. {
  308.     async_serialize_start();
  309.     printf("new thread, hash 0x%x\n", hash);
  310.     async_serialize_end();
  311.  
  312.     thread_trace_start(hash);
  313. }
  314.  
  315. void trace_loop(void *thread_hash_arg)
  316. {
  317.     int rc;
  318.     unsigned ev_type;
  319.     unsigned thread_hash;
  320.     unsigned thread_id;
  321.     unsigned val0, val1;
  322.  
  323.     thread_hash = (unsigned)thread_hash_arg;
  324.     thread_id = next_thread_id++;
  325.  
  326.     printf("trace_loop(%d)\n", thread_id); 
  327.  
  328.     while (!abort_trace) {
  329.  
  330.         /* Run thread until an event occurs */
  331.         rc = debug_go(phoneid, thread_hash,
  332.             &ev_type, &val0, &val1);
  333.  
  334. //      printf("rc = %d, ev_type=%d\n", rc, ev_type);
  335.         if (ev_type == UDEBUG_EVENT_FINISHED) {
  336.             printf("thread %u debugging finished\n", thread_id);
  337.             break;
  338.         }
  339.  
  340.         if (rc >= 0) {
  341.             switch (ev_type) {
  342.             case UDEBUG_EVENT_SYSCALL:
  343.                 event_syscall(thread_id, thread_hash, val0, (int)val1);
  344.                 break;
  345.             case UDEBUG_EVENT_STOP:
  346.                 printf("stop event\n");
  347.                 printf("waiting for resume\n");
  348.                 while (paused) {
  349.                     usleep(1000000);
  350.                     fibril_yield();
  351.                     printf(".");
  352.                 }
  353.                 printf("resumed\n");
  354.                 break;
  355.             case UDEBUG_EVENT_NEW_THREAD:
  356.                 event_new_thread(val0);
  357.                 break;
  358.             default:
  359.                 printf("unknown event type %d\n", ev_type);
  360.                 break;
  361.             }
  362.         }
  363.  
  364.     }
  365.  
  366.     printf("trace_loop(%d) exiting\n", thread_id);
  367. }
  368.  
  369. void thread_trace_start(unsigned thread_hash)
  370. {
  371.     fid_t fid;
  372.  
  373.     thash = thread_hash;
  374.  
  375.     fid = fibril_create(trace_loop, (void *)thread_hash);
  376.     if (fid == 0) {
  377.         printf("Warning: Failed creating fibril\n");
  378.     }
  379.     fibril_add_ready(fid);
  380. }
  381.  
  382. void trace_active_task(void)
  383. {
  384.     int taskid;
  385.     int i;
  386.     int rc;
  387.     int c;
  388.  
  389.     printf("Syscall Tracer\n");
  390.     printf("Press 'c' to connect\n");
  391.     while ((i = getchar()) != 'c')
  392.         putchar(i);
  393.  
  394.     taskid = 14;
  395.     rc = task_connect(taskid);
  396.     if (rc < 0) {
  397.         printf("Failed to connect to task %d\n", taskid);
  398.         return;
  399.     }
  400.  
  401.     printf("Connected to task %d\n", taskid);
  402.  
  403.     ipcp_init();
  404.     ipcp_connection_set(1, 0, proto_console);
  405.  
  406.     rc = get_thread_list();
  407.     if (rc < 0) {
  408.         printf("Failed to get thread list (error %d)\n", rc);
  409.         return;
  410.     }
  411.  
  412.     abort_trace = 0;
  413.  
  414.     for (i = 0; i < n_threads; i++) {
  415.         thread_trace_start(thread_hash_buf[i]);
  416.     }
  417.  
  418.     while(1) {
  419.         c = getchar();
  420.         if (c == 'q') break;
  421.         if (c == 'p') {
  422.             paused = 1;
  423.             rc = debug_stop(phoneid, thash);
  424.             printf("stop -> %d\n", rc);
  425.         }
  426.         if (c == 'r') {
  427.             paused = 0;
  428.         }
  429.     }
  430.  
  431.     printf("terminate debugging session...\n");
  432.     abort_trace = 1;
  433.     debug_end(phoneid);
  434.     ipc_hangup(phoneid);
  435.  
  436.     ipcp_cleanup();
  437.  
  438.     printf("done\n");
  439.     return;
  440. }
  441.  
  442. static void main_init(void)
  443. {
  444.     proto_t *p;
  445.     oper_t *o;
  446.  
  447.     next_thread_id = 1;
  448.     paused = 0;
  449.  
  450.     proto_init();
  451.  
  452.     p = proto_new("vfs");
  453.     o = oper_new("read");
  454.     proto_add_oper(p, VFS_READ, o);
  455.     o = oper_new("write");
  456.     proto_add_oper(p, VFS_WRITE, o);
  457.     o = oper_new("truncate");
  458.     proto_add_oper(p, VFS_TRUNCATE, o);
  459.     o = oper_new("mount");
  460.     proto_add_oper(p, VFS_MOUNT, o);
  461.     o = oper_new("unmount");
  462.     proto_add_oper(p, VFS_UNMOUNT, o);
  463.  
  464.     proto_register(SERVICE_VFS, p);
  465.  
  466.     p = proto_new("console");
  467.     o = oper_new("getchar");
  468.     proto_add_oper(p, CONSOLE_GETCHAR, o);
  469.     o = oper_new("putchar");
  470.     proto_add_oper(p, CONSOLE_PUTCHAR, o);
  471.     o = oper_new("clear");
  472.     proto_add_oper(p, CONSOLE_CLEAR, o);
  473.     o = oper_new("goto");
  474.     proto_add_oper(p, CONSOLE_GOTO, o);
  475.     o = oper_new("getsize");
  476.     proto_add_oper(p, CONSOLE_GETSIZE, o);
  477.     o = oper_new("flush");
  478.     proto_add_oper(p, CONSOLE_FLUSH, o);
  479.     o = oper_new("set_style");
  480.     proto_add_oper(p, CONSOLE_SET_STYLE, o);
  481.     o = oper_new("flush");
  482.     proto_add_oper(p, CONSOLE_CURSOR_VISIBILITY, o);
  483.     o = oper_new("cursor_visibility");
  484.     proto_add_oper(p, CONSOLE_FLUSH, o);
  485.  
  486.     proto_console = p;
  487.     proto_register(SERVICE_CONSOLE, p);
  488. }
  489.  
  490. int main(void)
  491. {
  492.     main_init();
  493.  
  494.     while (1) {
  495.         trace_active_task();
  496.     }
  497. }
  498.  
  499. /** @}
  500.  */
  501.