funnyos/arch/testarm/boot/irq_trampoline.c - diff

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version 1.1, 2007/10/29 20:34:23

version 1.4, 2007/11/23 13:37:42

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* $Id$

#include <sys/types.h>

#include <sys/pcb.h>

* IRQ trampoline.

* IRQ trampoline->

* Will enter here when Core IRQ line is asserted.

* IRQ controller driver configures us to call him on assert;

* by default (until some irqc attached) we just return doing nothing.

void irq_trampoline(struct pcb *iframep);

void __do_nothing_and_return(void);

/* default to do nothing (will overrided by some irqc driver) */

void (*irq_trampoline_func)(void) = __do_nothing_and_return;

/* interrupt frame pointer */

struct pcb *iframep;

void

__do_nothing_and_return(void)

{

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__asm __volatile("mov r1,r1");

}

void (*irq_trampoline)(void) = __do_nothing_and_return;

void

irq_trampoline(struct pcb *ifp)

{

iframep = ifp;

irq_trampoline_func();

}