Large kernel initrd fix (initial patch by Daniel Jacobowitz).
[qemu/mini2440.git] / hw / mips_int.c
blobed489f1a16af8a87e4a04041304be0b0917a86b9
1 #include "vl.h"
2 #include "cpu.h"
4 /* Raise IRQ to CPU if necessary. It must be called every time the active
5 IRQ may change */
6 void cpu_mips_update_irq(CPUState *env)
8 if ((env->CP0_Status & (1 << CP0St_IE)) &&
9 !(env->CP0_Status & (1 << CP0St_EXL)) &&
10 !(env->CP0_Status & (1 << CP0St_ERL)) &&
11 !(env->hflags & MIPS_HFLAG_DM)) {
12 if ((env->CP0_Status & env->CP0_Cause & CP0Ca_IP_mask) &&
13 !(env->interrupt_request & CPU_INTERRUPT_HARD)) {
14 cpu_interrupt(env, CPU_INTERRUPT_HARD);
16 } else
17 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
20 void cpu_mips_irq_request(void *opaque, int irq, int level)
22 CPUState *env = (CPUState *)opaque;
24 if (irq < 0 || irq > 7)
25 return;
27 if (level) {
28 env->CP0_Cause |= 1 << (irq + CP0Ca_IP);
29 } else {
30 env->CP0_Cause &= ~(1 << (irq + CP0Ca_IP));
32 cpu_mips_update_irq(env);