[PULL 20/25] hw/nios2: exit to main CPU loop only when unmasking interrupts

[Peter Maydell]

From: Wentong Wu <wentong...@intel.com>

Only when guest code is unmasking interrupts, terminate the excution
of translated code and exit to the main CPU loop to handle previous
pended interrupts because of the interrupts mask by guest code.

Signed-off-by: Wentong Wu <wentong...@intel.com>
Message-id: 20200710233433.19729-4-wentong...@intel.com
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
 hw/nios2/cpu_pic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/nios2/cpu_pic.c b/hw/nios2/cpu_pic.c
index 1c1989d56a0..5ea7e52ab83 100644
--- a/hw/nios2/cpu_pic.c
+++ b/hw/nios2/cpu_pic.c
@@ -54,7 +54,8 @@ static void nios2_pic_cpu_handler(void *opaque, int irq, int 
level)
 
 void nios2_check_interrupts(CPUNios2State *env)
 {
-    if (env->irq_pending) {
+    if (env->irq_pending &&
+        (env->regs[CR_STATUS] & CR_STATUS_PIE)) {
         env->irq_pending = 0;
         cpu_interrupt(env_cpu(env), CPU_INTERRUPT_HARD);
     }
-- 
2.20.1