cpu/mega/include/cpu/regs.h

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#ifndef CPU_REGS_H_INCLUDED
#define CPU_REGS_H_INCLUDED

#include <io.h>

#define CPUR_RAMPZ      0x5b    //!< Extended Z Pointer
#define CPUR_EIND       0x5c    //!< Extended Indirect
#define CPUR_SPL        0x5d    //!< Stack Pointer Low
#define CPUR_SPH        0x5e    //!< Stack Pointer High
#define CPUR_SREG       0x5f    //!< Status Register
# define CPUR_SREG_I            (1 << 7)        //!< Interrupt Enable
# define CPUR_SREG_T            (1 << 6)        //!< Bit Copy Storage
# define CPUR_SREG_H            (1 << 5)        //!< Half Carry
# define CPUR_SREG_S            (1 << 4)        //!< Sign
# define CPUR_SREG_V            (1 << 3)        //!< Overflow
# define CPUR_SREG_N            (1 << 2)        //!< Negative
# define CPUR_SREG_Z            (1 << 1)        //!< Zero
# define CPUR_SREG_C            (1 << 0)        //!< Carry

#ifndef __ASSEMBLY__

#define cpu_read_reg8(reg)                                      \
        mmio_read8((void *)(CPUR_##reg))

#define cpu_write_reg8(reg, value)                              \
        mmio_write8((void *)(CPUR_##reg), value)

#else /* __ASSEMBLY__ */

#define LD_CPUREG(val, name)    in      val, CPUR_##name - AVR_MMIO_OFFSET
#define ST_CPUREG(val, name)    out     CPUR_##name - AVR_MMIO_OFFSET, val

#endif /* __ASSEMBLY__ */

#endif /* CPU_REGS_H_INCLUDED */

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