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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_b(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.  
  281.     async_serialize_end();
  282. }
  283.  
  284. void event_syscall_e(unsigned thread_id, unsigned thread_hash,  unsigned sc_id, int sc_rc)
  285. {
  286.     unsigned sc_args[6];
  287.     int rv_type;
  288.     int rc;
  289.  
  290.     /* Read syscall arguments */
  291.     rc = debug_args_read(phoneid, thread_hash, sc_args);
  292.  
  293.     async_serialize_start();
  294.  
  295. //  printf("[%d] ", thread_id);
  296.  
  297.     if (rc < 0) {
  298.         printf("error\n");
  299.         async_serialize_end();
  300.         return;
  301.     }
  302.  
  303.     rv_type = syscall_desc[sc_id].rv_type;
  304.     print_sc_retval(sc_rc, rv_type);
  305.  
  306.     switch (sc_id) {
  307.     case SYS_IPC_CALL_ASYNC_FAST:
  308.         sc_ipc_call_async_fast(sc_args, sc_rc);
  309.         break;
  310.     case SYS_IPC_CALL_ASYNC_SLOW:
  311.         sc_ipc_call_async_slow(sc_args, sc_rc);
  312.         break;
  313.     case SYS_IPC_CALL_SYNC_FAST:
  314.         sc_ipc_call_sync_fast(sc_args);
  315.         break;
  316.     case SYS_IPC_CALL_SYNC_SLOW:
  317.         sc_ipc_call_sync_slow(sc_args);
  318.         break;
  319.     case SYS_IPC_WAIT:
  320.         sc_ipc_wait(sc_args, sc_rc);
  321.         break;
  322.     default:
  323.         break;
  324.     }
  325.  
  326.     async_serialize_end();
  327. }
  328.  
  329. void event_new_thread(unsigned hash)
  330. {
  331.     async_serialize_start();
  332.     printf("new thread, hash 0x%x\n", hash);
  333.     async_serialize_end();
  334.  
  335.     thread_trace_start(hash);
  336. }
  337.  
  338. void trace_loop(void *thread_hash_arg)
  339. {
  340.     int rc;
  341.     unsigned ev_type;
  342.     unsigned thread_hash;
  343.     unsigned thread_id;
  344.     unsigned val0, val1;
  345.  
  346.     thread_hash = (unsigned)thread_hash_arg;
  347.     thread_id = next_thread_id++;
  348.  
  349.     printf("trace_loop(%d)\n", thread_id); 
  350.  
  351.     while (!abort_trace) {
  352.  
  353.         /* Run thread until an event occurs */
  354.         rc = debug_go(phoneid, thread_hash,
  355.             &ev_type, &val0, &val1);
  356.  
  357. //      printf("rc = %d, ev_type=%d\n", rc, ev_type);
  358.         if (ev_type == UDEBUG_EVENT_FINISHED) {
  359.             printf("thread %u debugging finished\n", thread_id);
  360.             break;
  361.         }
  362.  
  363.         if (rc >= 0) {
  364.             switch (ev_type) {
  365.             case UDEBUG_EVENT_SYSCALL_B:
  366.                 event_syscall_b(thread_id, thread_hash, val0, (int)val1);
  367.                 break;
  368.             case UDEBUG_EVENT_SYSCALL_E:
  369.                 event_syscall_e(thread_id, thread_hash, val0, (int)val1);
  370.                 break;
  371.             case UDEBUG_EVENT_STOP:
  372.                 printf("stop event\n");
  373.                 printf("waiting for resume\n");
  374.                 while (paused) {
  375.                     usleep(1000000);
  376.                     fibril_yield();
  377.                     printf(".");
  378.                 }
  379.                 printf("resumed\n");
  380.                 break;
  381.             case UDEBUG_EVENT_NEW_THREAD:
  382.                 event_new_thread(val0);
  383.                 break;
  384.             default:
  385.                 printf("unknown event type %d\n", ev_type);
  386.                 break;
  387.             }
  388.         }
  389.  
  390.     }
  391.  
  392.     printf("trace_loop(%d) exiting\n", thread_id);
  393. }
  394.  
  395. void thread_trace_start(unsigned thread_hash)
  396. {
  397.     fid_t fid;
  398.  
  399.     thash = thread_hash;
  400.  
  401.     fid = fibril_create(trace_loop, (void *)thread_hash);
  402.     if (fid == 0) {
  403.         printf("Warning: Failed creating fibril\n");
  404.     }
  405.     fibril_add_ready(fid);
  406. }
  407.  
  408. void trace_active_task(void)
  409. {
  410.     int taskid;
  411.     int i;
  412.     int rc;
  413.     int c;
  414.  
  415.     printf("Syscall Tracer\n");
  416.     printf("Press 'c' to connect\n");
  417.     while ((i = getchar()) != 'c')
  418.         putchar(i);
  419.  
  420.     taskid = 14;
  421.     rc = task_connect(taskid);
  422.     if (rc < 0) {
  423.         printf("Failed to connect to task %d\n", taskid);
  424.         return;
  425.     }
  426.  
  427.     printf("Connected to task %d\n", taskid);
  428.  
  429.     ipcp_init();
  430.     ipcp_connection_set(1, 0, proto_console);
  431.  
  432.     rc = get_thread_list();
  433.     if (rc < 0) {
  434.         printf("Failed to get thread list (error %d)\n", rc);
  435.         return;
  436.     }
  437.  
  438.     abort_trace = 0;
  439.  
  440.     for (i = 0; i < n_threads; i++) {
  441.         thread_trace_start(thread_hash_buf[i]);
  442.     }
  443.  
  444.     while(1) {
  445.         c = getchar();
  446.         if (c == 'q') break;
  447.         if (c == 'p') {
  448.             paused = 1;
  449.             rc = debug_stop(phoneid, thash);
  450.             printf("stop -> %d\n", rc);
  451.         }
  452.         if (c == 'r') {
  453.             paused = 0;
  454.         }
  455.     }
  456.  
  457.     printf("terminate debugging session...\n");
  458.     abort_trace = 1;
  459.     debug_end(phoneid);
  460.     ipc_hangup(phoneid);
  461.  
  462.     ipcp_cleanup();
  463.  
  464.     printf("done\n");
  465.     return;
  466. }
  467.  
  468. static void main_init(void)
  469. {
  470.     proto_t *p;
  471.     oper_t *o;
  472.  
  473.     next_thread_id = 1;
  474.     paused = 0;
  475.  
  476.     proto_init();
  477.  
  478.     p = proto_new("vfs");
  479.     o = oper_new("read");
  480.     proto_add_oper(p, VFS_READ, o);
  481.     o = oper_new("write");
  482.     proto_add_oper(p, VFS_WRITE, o);
  483.     o = oper_new("truncate");
  484.     proto_add_oper(p, VFS_TRUNCATE, o);
  485.     o = oper_new("mount");
  486.     proto_add_oper(p, VFS_MOUNT, o);
  487.     o = oper_new("unmount");
  488.     proto_add_oper(p, VFS_UNMOUNT, o);
  489.  
  490.     proto_register(SERVICE_VFS, p);
  491.  
  492.     p = proto_new("console");
  493.     o = oper_new("getchar");
  494.     proto_add_oper(p, CONSOLE_GETCHAR, o);
  495.     o = oper_new("putchar");
  496.     proto_add_oper(p, CONSOLE_PUTCHAR, o);
  497.     o = oper_new("clear");
  498.     proto_add_oper(p, CONSOLE_CLEAR, o);
  499.     o = oper_new("goto");
  500.     proto_add_oper(p, CONSOLE_GOTO, o);
  501.     o = oper_new("getsize");
  502.     proto_add_oper(p, CONSOLE_GETSIZE, o);
  503.     o = oper_new("flush");
  504.     proto_add_oper(p, CONSOLE_FLUSH, o);
  505.     o = oper_new("set_style");
  506.     proto_add_oper(p, CONSOLE_SET_STYLE, o);
  507.     o = oper_new("flush");
  508.     proto_add_oper(p, CONSOLE_CURSOR_VISIBILITY, o);
  509.     o = oper_new("cursor_visibility");
  510.     proto_add_oper(p, CONSOLE_FLUSH, o);
  511.  
  512.     proto_console = p;
  513.     proto_register(SERVICE_CONSOLE, p);
  514. }
  515.  
  516. int main(void)
  517. {
  518.     main_init();
  519.  
  520.     while (1) {
  521.         trace_active_task();
  522.     }
  523. }
  524.  
  525. /** @}
  526.  */
  527.