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Line 74... Line 74...
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ipl_t interrupts_read(void)
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ipl_t interrupts_read(void)
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{
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{
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    return cp0_status_read();
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    return cp0_status_read();
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}
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}
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/* TODO: This is SMP unsafe!!! */
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static unsigned long nextcount;
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/** Start hardware clock */
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static void timer_start(void)
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{
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    nextcount = cp0_compare_value + cp0_count_read();
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    cp0_compare_write(nextcount);
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}
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static void timer_exception(int n, istate_t *istate)
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static void timer_exception(int n, istate_t *istate)
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{
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{
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    unsigned long drift;
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    drift = cp0_count_read() - nextcount;
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    while (drift > cp0_compare_value) {
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        drift -= cp0_compare_value;
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        CPU->missed_clock_ticks++;
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    }
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    cp0_compare_write(cp0_count_read() + cp0_compare_value);
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    nextcount = cp0_count_read() + cp0_compare_value - drift;
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    cp0_compare_write(nextcount);
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    clock();
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    clock();
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}
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}
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static void swint0(int n, istate_t *istate)
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static void swint0(int n, istate_t *istate)
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{
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{
Line 98... Line 115...
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void interrupt_init(void)
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void interrupt_init(void)
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{
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{
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    int_register(TIMER_IRQ, "timer", timer_exception);
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    int_register(TIMER_IRQ, "timer", timer_exception);
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    int_register(0, "swint0", swint0);
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    int_register(0, "swint0", swint0);
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    int_register(1, "swint1", swint1);
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    int_register(1, "swint1", swint1);
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    timer_start();
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}
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}
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static void ipc_int(int n, istate_t *istate)
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static void ipc_int(int n, istate_t *istate)
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{
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{
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    ipc_irq_send_notif(n-INT_OFFSET);
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    ipc_irq_send_notif(n-INT_OFFSET);