display-training: arch/avr8/include/arch/interrupt.h Source File

00001 
00038 #ifndef ARCH_INTERRUPT_H_INCLUDED
00039 #define ARCH_INTERRUPT_H_INCLUDED
00040 
00041 #include <compiler.h>
00042 #include <cpu/regs.h>
00043 #include <types.h>
00044 
00048 typedef uint8_t         irqflags_t;
00049 
00055 __always_inline static irqflags_t cpu_irq_save(void)
00056 {
00057         irqflags_t flags;
00058 
00059         flags = cpu_read_reg8(SREG);
00060         cpu_irq_disable();
00061 
00062         return flags;
00063 }
00064 
00069 __always_inline static void cpu_irq_restore(irqflags_t flags)
00070 {
00071         barrier();
00072         cpu_write_reg8(SREG, flags);
00073 }
00074 
00081 __always_inline static bool cpu_irq_is_enabled_flags(irqflags_t flags)
00082 {
00083         return (flags & CPUR_SREG_I);
00084 }
00085 
00091 #define cpu_irq_is_enabled()                    \
00092         cpu_irq_is_enabled_flags(cpu_read_reg8(SREG))
00093 
00094 #endif /* ARCH_INTERRUPT_H_INCLUDED */