1. using armv6-m arm_irq(); 2. simplify the interrupt number get process; 3. To improve the performance, move common exception code to ram_code. Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
1. using armv6-m arm_irq(); 2. simplify the interrupt number get process; 3. To improve the performance, move common exception code to ram_code. Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>