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/** Dispatch system call */
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/** Dispatch system call */
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unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
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unative_t syscall_handler(unative_t a1, unative_t a2, unative_t a3,
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    unative_t a4, unative_t a5, unative_t a6, unative_t id)
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    unative_t a4, unative_t a5, unative_t a6, unative_t id)
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{
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{
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    unative_t rc;
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    unative_t rc;
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#ifdef CONFIG_UDEBUG
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#ifdef CONFIG_UDEBUG
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    bool debug;
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    /*
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     * Early check for undebugged tasks. We do not lock anything as this
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     * test need not be precise in either way.
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     */
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    debug = THREAD->udebug.active;
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    if (debug) {
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    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
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        udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, 0, false);
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    }
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#endif
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#endif
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    if (id < SYSCALL_END) {
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    if (id < SYSCALL_END) {
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        rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
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        rc = syscall_table[id](a1, a2, a3, a4, a5, a6);
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    } else {
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    } else {
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    if (THREAD->interrupted)
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    if (THREAD->interrupted)
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        thread_exit();
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        thread_exit();
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#ifdef CONFIG_UDEBUG
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#ifdef CONFIG_UDEBUG
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    if (debug) {
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    udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
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        udebug_syscall_event(a1, a2, a3, a4, a5, a6, id, rc, true);
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    /*
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        /*
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     * Stopping point needed for tasks that only invoke non-blocking
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         * Stopping point needed for tasks that only invoke
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     * system calls.
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         * non-blocking system calls. Not needed if the task
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         * is not being debugged (it cannot block here).
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     */
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         */
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    udebug_stoppable_begin();
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        udebug_stoppable_begin();
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    udebug_stoppable_end();
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        udebug_stoppable_end();
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    }
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#endif
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#endif
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    return rc;
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    return rc;
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}
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}
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