target/nios2: Rewrite interrupt handling

Previously, we would avoid setting CPU_INTERRUPT_HARD when interrupts
are disabled at a particular point in time, instead queuing the value
into cpu->irq_pending.  This is more complicated than required.

Instead, set CPU_INTERRUPT_HARD any time there is a pending interrupt,
and exclusively check for interrupts disabled in nios2_cpu_exec_interrupt.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/target/nios2/cpu.h b/target/nios2/cpu.h
index d2ba0c5bbd..a00e4229ce 100644
--- a/target/nios2/cpu.h
+++ b/target/nios2/cpu.h
@@ -160,7 +160,6 @@ struct CPUNios2State {
 
 #if !defined(CONFIG_USER_ONLY)
     Nios2MMU mmu;
-    uint32_t irq_pending;
 #endif
     int error_code;
 };