diff options
Diffstat (limited to 'hw/sun4u.c')
| -rw-r--r-- | hw/sun4u.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/hw/sun4u.c b/hw/sun4u.c index 237e20c1bf..fe3313890d 100644 --- a/hw/sun4u.c +++ b/hw/sun4u.c @@ -248,6 +248,10 @@ void cpu_check_irqs(CPUSPARCState *env) uint32_t pil = env->pil_in | (env->softint & ~(SOFTINT_TIMER | SOFTINT_STIMER)); + /* TT_IVEC has a higher priority (16) than TT_EXTINT (31..17) */ + if (env->ivec_status & 0x20) { + return; + } /* check if TM or SM in SOFTINT are set setting these also causes interrupt 14 */ if (env->softint & (SOFTINT_TIMER | SOFTINT_STIMER)) { @@ -275,7 +279,8 @@ void cpu_check_irqs(CPUSPARCState *env) int old_interrupt = env->interrupt_index; int new_interrupt = TT_EXTINT | i; - if (env->tl > 0 && cpu_tsptr(env)->tt > new_interrupt) { + if (unlikely(env->tl > 0 && cpu_tsptr(env)->tt > new_interrupt + && ((cpu_tsptr(env)->tt & 0x1f0) == TT_EXTINT))) { CPUIRQ_DPRINTF("Not setting CPU IRQ: TL=%d " "current %x >= pending %x\n", env->tl, cpu_tsptr(env)->tt, new_interrupt); @@ -309,19 +314,22 @@ static void cpu_set_ivec_irq(void *opaque, int irq, int level) CPUSPARCState *env = opaque; if (level) { - CPUIRQ_DPRINTF("Raise IVEC IRQ %d\n", irq); - env->interrupt_index = TT_IVEC; - env->pil_in |= 1 << 5; - env->ivec_status |= 0x20; - env->ivec_data[0] = (0x1f << 6) | irq; - env->ivec_data[1] = 0; - env->ivec_data[2] = 0; - cpu_interrupt(env, CPU_INTERRUPT_HARD); - } else { - CPUIRQ_DPRINTF("Lower IVEC IRQ %d\n", irq); - env->pil_in &= ~(1 << 5); - env->ivec_status &= ~0x20; - cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); + if (!(env->ivec_status & 0x20)) { + CPUIRQ_DPRINTF("Raise IVEC IRQ %d\n", irq); + env->halted = 0; + env->interrupt_index = TT_IVEC; + env->ivec_status |= 0x20; + env->ivec_data[0] = (0x1f << 6) | irq; + env->ivec_data[1] = 0; + env->ivec_data[2] = 0; + cpu_interrupt(env, CPU_INTERRUPT_HARD); + } + } else { + if (env->ivec_status & 0x20) { + CPUIRQ_DPRINTF("Lower IVEC IRQ %d\n", irq); + env->ivec_status &= ~0x20; + cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); + } } } |