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| Rev | Author | Line No. | Line |
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| 2801 | svoboda | 1 | /** @addtogroup generic |
| 2 | * @{ |
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| 3 | */ |
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| 4 | |||
| 5 | /** |
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| 6 | * @file |
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| 7 | * @brief Tdebug. |
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| 8 | */ |
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| 9 | |||
| 10 | #include <synch/waitq.h> |
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| 11 | #include <console/klog.h> |
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| 12 | #include <udebug.h> |
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| 13 | #include <arch.h> |
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| 14 | |||
| 2804 | svoboda | 15 | void udebug_stoppable_begin(void) |
| 2801 | svoboda | 16 | { |
| 2804 | svoboda | 17 | int nsc; |
| 18 | call_t *db_call; |
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| 19 | |||
| 20 | spinlock_lock(&TASK->lock); |
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| 21 | |||
| 22 | nsc = --TASK->not_stoppable_count; |
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| 23 | db_call = TASK->debug_begin_call; |
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| 24 | |||
| 25 | if (TASK->stop_request == true) { |
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| 26 | klog_printf("udebug_stoppable_begin"); |
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| 27 | klog_printf(" - nsc := %d", nsc); |
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| 28 | } |
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| 29 | |||
| 30 | if (TASK->stop_request == true && nsc == 0) { |
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| 2801 | svoboda | 31 | TASK->stop_request = false; |
| 32 | TASK->debug_begin_call = NULL; |
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| 2804 | svoboda | 33 | spinlock_unlock(&TASK->lock); |
| 34 | |||
| 35 | IPC_SET_RETVAL(db_call->data, 0); |
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| 36 | klog_printf("udebug_stoppable_begin/ipc_answer"); |
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| 37 | ipc_answer(&TASK->answerbox, db_call); |
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| 38 | } else { |
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| 39 | spinlock_unlock(&TASK->lock); |
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| 40 | } |
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| 41 | } |
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| 42 | |||
| 43 | void udebug_stoppable_end(void) |
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| 44 | { |
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| 45 | restart: |
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| 46 | spinlock_lock(&TASK->lock); |
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| 47 | |||
| 48 | if (TASK->stop_request) { |
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| 49 | TASK->debug_begin_call = NULL; |
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| 50 | spinlock_unlock(&TASK->lock); |
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| 51 | klog_printf("udebug_stoppable_end: waitq_sleep"); |
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| 2801 | svoboda | 52 | waitq_sleep(&THREAD->go_wq); |
| 2804 | svoboda | 53 | goto restart; |
| 54 | /* must try again - have to lose stoppability atomically */ |
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| 55 | } else { |
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| 56 | ++TASK->not_stoppable_count; |
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| 57 | spinlock_unlock(&TASK->lock); |
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| 2801 | svoboda | 58 | } |
| 59 | } |
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| 60 | |||
| 61 | void udebug_syscall_event(void) |
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| 62 | { |
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| 2804 | svoboda | 63 | spinlock_lock(&TASK->lock); |
| 2801 | svoboda | 64 | /* being debugged + have go */ |
| 65 | if (TASK->being_debugged && !TASK->stop_request) { /* locking! */ |
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| 66 | klog_printf("udebug_syscall_event"); |
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| 67 | IPC_SET_RETVAL(TASK->debug_go_call->data, 0); |
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| 2804 | svoboda | 68 | klog_printf("udebug_syscall_event/ipc_answer"); |
| 69 | |||
| 2801 | svoboda | 70 | ipc_answer(&TASK->answerbox, TASK->debug_go_call); |
| 2804 | svoboda | 71 | spinlock_unlock(&TASK->lock); |
| 2801 | svoboda | 72 | waitq_sleep(&THREAD->go_wq); |
| 2804 | svoboda | 73 | } else { |
| 74 | spinlock_unlock(&TASK->lock); |
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| 2801 | svoboda | 75 | } |
| 76 | } |
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| 77 | |||
| 78 | /** @} |
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| 79 | */ |