[PATCH v2 4/5] target/avr: fix interrupt processing

[Pavel Dovgalyuk]

Interrupt bit vector has 64 bits, but interrupt vector is found with ctz32
function. This patch replaces it with ctz64.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/avr/helper.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/avr/helper.c b/target/avr/helper.c
index 156dde4e92..61ab6feb25 100644
--- a/target/avr/helper.c
+++ b/target/avr/helper.c
@@ -51,7 +51,7 @@ bool avr_cpu_exec_interrupt(CPUState *cs, int 
interrupt_request)
     }
     if (interrupt_request & CPU_INTERRUPT_HARD) {
         if (cpu_interrupts_enabled(env) && env->intsrc != 0) {
-            int index = ctz32(env->intsrc);
+            int index = ctz64(env->intsrc);
             cs->exception_index = EXCP_INT(index);
             avr_cpu_do_interrupt(cs);
 
@@ -78,7 +78,7 @@ void avr_cpu_do_interrupt(CPUState *cs)
     if (cs->exception_index == EXCP_RESET) {
         vector = 0;
     } else if (env->intsrc != 0) {
-        vector = ctz32(env->intsrc) + 1;
+        vector = ctz64(env->intsrc) + 1;
     }
 
     if (avr_feature(env, AVR_FEATURE_3_BYTE_PC)) {