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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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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| 2813 | svoboda | 12 | #include <udebug/udebug.h> |
| 2801 | svoboda | 13 | #include <arch.h> |
| 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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| 2823 | svoboda | 19 | ipl_t ipl; |
| 2804 | svoboda | 20 | |
| 2823 | svoboda | 21 | ipl = interrupts_disable(); |
| 2804 | svoboda | 22 | spinlock_lock(&TASK->lock); |
| 23 | |||
| 24 | nsc = --TASK->not_stoppable_count; |
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| 25 | db_call = TASK->debug_begin_call; |
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| 26 | |||
| 2825 | svoboda | 27 | if (TASK->dt_state == UDEBUG_TS_BEGINNING) { |
| 2804 | svoboda | 28 | klog_printf("udebug_stoppable_begin"); |
| 29 | klog_printf(" - nsc := %d", nsc); |
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| 30 | } |
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| 31 | |||
| 2825 | svoboda | 32 | if (TASK->dt_state == UDEBUG_TS_BEGINNING && nsc == 0) { |
| 33 | TASK->dt_state = UDEBUG_TS_ACTIVE; |
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| 2801 | svoboda | 34 | TASK->debug_begin_call = NULL; |
| 2804 | svoboda | 35 | spinlock_unlock(&TASK->lock); |
| 2823 | svoboda | 36 | interrupts_restore(ipl); |
| 2804 | svoboda | 37 | |
| 38 | IPC_SET_RETVAL(db_call->data, 0); |
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| 39 | klog_printf("udebug_stoppable_begin/ipc_answer"); |
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| 40 | ipc_answer(&TASK->answerbox, db_call); |
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| 41 | } else { |
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| 42 | spinlock_unlock(&TASK->lock); |
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| 2823 | svoboda | 43 | interrupts_restore(ipl); |
| 2804 | svoboda | 44 | } |
| 45 | } |
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| 46 | |||
| 47 | void udebug_stoppable_end(void) |
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| 48 | { |
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| 2823 | svoboda | 49 | ipl_t ipl; |
| 50 | |||
| 2804 | svoboda | 51 | restart: |
| 2823 | svoboda | 52 | ipl = interrupts_disable(); |
| 2804 | svoboda | 53 | spinlock_lock(&TASK->lock); |
| 54 | |||
| 2825 | svoboda | 55 | if ((TASK->dt_state == UDEBUG_TS_BEGINNING || |
| 56 | TASK->dt_state == UDEBUG_TS_ACTIVE) && |
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| 57 | THREAD->debug_stop == true) { |
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| 2804 | svoboda | 58 | TASK->debug_begin_call = NULL; |
| 59 | spinlock_unlock(&TASK->lock); |
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| 2823 | svoboda | 60 | interrupts_restore(ipl); |
| 61 | |||
| 2804 | svoboda | 62 | klog_printf("udebug_stoppable_end: waitq_sleep"); |
| 2801 | svoboda | 63 | waitq_sleep(&THREAD->go_wq); |
| 2804 | svoboda | 64 | goto restart; |
| 65 | /* must try again - have to lose stoppability atomically */ |
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| 66 | } else { |
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| 67 | ++TASK->not_stoppable_count; |
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| 68 | spinlock_unlock(&TASK->lock); |
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| 2823 | svoboda | 69 | interrupts_restore(ipl); |
| 2801 | svoboda | 70 | } |
| 71 | } |
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| 72 | |||
| 2805 | svoboda | 73 | void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3, |
| 74 | unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc) |
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| 2801 | svoboda | 75 | { |
| 2805 | svoboda | 76 | call_t *call; |
| 2823 | svoboda | 77 | ipl_t ipl; |
| 2805 | svoboda | 78 | |
| 2823 | svoboda | 79 | ipl = interrupts_disable(); |
| 2848 | svoboda | 80 | spinlock_lock(&THREAD->debug_lock); |
| 2823 | svoboda | 81 | |
| 2854 | svoboda | 82 | /* Must only generate events when in debugging session and have go */ |
| 83 | if (THREAD->debug_active == true && |
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| 84 | THREAD->debug_stop == false) { |
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| 2801 | svoboda | 85 | klog_printf("udebug_syscall_event"); |
| 2826 | svoboda | 86 | call = THREAD->debug_go_call; |
| 2805 | svoboda | 87 | IPC_SET_RETVAL(call->data, 0); |
| 88 | IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL); |
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| 89 | IPC_SET_ARG2(call->data, id); |
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| 90 | IPC_SET_ARG3(call->data, rc); |
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| 2804 | svoboda | 91 | klog_printf("udebug_syscall_event/ipc_answer"); |
| 92 | |||
| 2805 | svoboda | 93 | THREAD->syscall_args[0] = a1; |
| 94 | THREAD->syscall_args[1] = a2; |
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| 95 | THREAD->syscall_args[2] = a3; |
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| 96 | THREAD->syscall_args[3] = a4; |
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| 97 | THREAD->syscall_args[4] = a5; |
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| 98 | THREAD->syscall_args[5] = a6; |
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| 99 | |||
| 2825 | svoboda | 100 | /* |
| 101 | * Make sure debug_stop is true when going to sleep |
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| 102 | * in case we get woken up by DEBUG_END. (At which |
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| 103 | * point it must be back to the initial true value). |
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| 104 | */ |
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| 105 | THREAD->debug_stop = true; |
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| 2866 | svoboda | 106 | |
| 107 | THREAD->cur_event = UDEBUG_EVENT_SYSCALL; |
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| 2848 | svoboda | 108 | spinlock_unlock(&THREAD->debug_lock); |
| 2825 | svoboda | 109 | |
| 2834 | svoboda | 110 | spinlock_lock(&TASK->lock); |
| 2826 | svoboda | 111 | ipc_answer(&TASK->answerbox, THREAD->debug_go_call); |
| 2804 | svoboda | 112 | spinlock_unlock(&TASK->lock); |
| 2834 | svoboda | 113 | |
| 2823 | svoboda | 114 | interrupts_restore(ipl); |
| 115 | |||
| 2801 | svoboda | 116 | waitq_sleep(&THREAD->go_wq); |
| 2804 | svoboda | 117 | } else { |
| 2848 | svoboda | 118 | spinlock_unlock(&THREAD->debug_lock); |
| 2823 | svoboda | 119 | interrupts_restore(ipl); |
| 2801 | svoboda | 120 | } |
| 121 | } |
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| 122 | |||
| 123 | /** @} |
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| 124 | */ |