void irq_handler(registers_t regs) {
if (regs.int_no >= IRQ8) {
outb(PORT_PIC2, SIGNAL_EOI);
}
outb(PORT_PIC1, SIGNAL_EOI);
isr_handler(regs);
}
void interrupt_handler(struct interrupt_context* int_ctx)
{
if ( int_ctx->int_no < 32 )
isr_handler(int_ctx);
else if ( 32 <= int_ctx->int_no && int_ctx->int_no < 32 + 16 )
irq_handler(int_ctx);
}
void irq_handler( struct regs regs )
{
/* send EOI to the PIC */
if (regs.int_no >= 40)
outb( 0xa0, 0x20 ); // reset slave PIC
outb( 0x20, 0x20 ); // reset master PIC
isr_handler( regs );
}
void irq_handler(const interrupt_info_t info)
{
if (info.id >= INTERRUPT_IRQ_CMOS_CLOCK)
{
io_write_ui8(PIC_SLAVE_COMMAND, PIC_OCW2_EOI);
io_wait();
}
io_write_ui8(PIC_MASTER_COMMAND, PIC_OCW2_EOI);
io_wait();
// Just handle stuff in the ISR handler.
isr_handler(info);
}
static void *isr_thread(void *data)
{
l4irq_t *irq;
(void)data;
if (!(irq = l4irq_attach(IRQ_NO)))
return NULL;
while (1)
{
if (l4irq_wait(irq))
continue;
isr_handler();
}
return NULL;
}
void UART_0_ISR(void)
{
isr_handler(0);
}
ISR(UART_3_ISR, ISR_BLOCK)
{
isr_handler(3);
}
void __attribute__((interrupt("IRQ"))) tim_isr_0(void)
{
isr_handler(TMR0, 0);
}
ISR(UART_1_ISR, ISR_BLOCK)
{
isr_handler(1);
}
ISR(UART_2_ISR, ISR_BLOCK)
{
isr_handler(2);
}
void TIMER_1_ISR(void)
{
isr_handler(1);
}
ISR(PORT2_VECTOR, isr_port2)
{
__enter_isr();
isr_handler((msp_port_isr_t *)PORT_2, 8);
__exit_isr();
}
void UART_3_ISR(void)
{
isr_handler(3);
}
void UART_1_ISR(void)
{
isr_handler(1);
}
void __attribute__((interrupt("IRQ"))) tim_isr_1(void)
{
isr_handler(TMR1, 1);
}
void __attribute__((interrupt("IRQ"))) tim_isr_2(void)
{
isr_handler(TMR2, 2);
}
void __attribute__((interrupt("IRQ"))) tim_isr_3(void)
{
isr_handler(TMR3, 3);
}
void UART_2_ISR(void)
{
isr_handler(2);
}
void TIMER_3_ISR(void)
{
isr_handler(3);
}
void TIMER_0_ISR(void)
{
isr_handler(0);
}
ISR(UART_0_ISR, ISR_BLOCK)
{
isr_handler(0);
}
void TIMER_2_ISR(void)
{
isr_handler(2);
}
ISR(PORT1_VECTOR, isr_port1)
{
__enter_isr();
isr_handler((msp_port_isr_t *)PORT_1, 0);
__exit_isr();
}
