diff options
Diffstat (limited to 'hw/arm_pic.c')
-rw-r--r-- | hw/arm_pic.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/hw/arm_pic.c b/hw/arm_pic.c new file mode 100644 index 0000000..1fe55b7 --- /dev/null +++ b/hw/arm_pic.c @@ -0,0 +1,48 @@ +/* + * Generic ARM Programmable Interrupt Controller support. + * + * Copyright (c) 2006 CodeSourcery. + * Written by Paul Brook + * + * This code is licenced under the LGPL + */ + +#include "hw.h" +#include "arm-misc.h" + +/* Stub functions for hardware that doesn't exist. */ +void pic_info(void) +{ +} + +void irq_info(void) +{ +} + + +/* Input 0 is IRQ and input 1 is FIQ. */ +static void arm_pic_cpu_handler(void *opaque, int irq, int level) +{ + CPUState *env = (CPUState *)opaque; + switch (irq) { + case ARM_PIC_CPU_IRQ: + if (level) + cpu_interrupt(env, CPU_INTERRUPT_HARD); + else + cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); + break; + case ARM_PIC_CPU_FIQ: + if (level) + cpu_interrupt(env, CPU_INTERRUPT_FIQ); + else + cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ); + break; + default: + cpu_abort(env, "arm_pic_cpu_handler: Bad interrput line %d\n", irq); + } +} + +qemu_irq *arm_pic_init_cpu(CPUState *env) +{ + return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2); +} |