sh.h File Reference

Hitachi SH CPU Department Source. More...

Go to the source code of this file.

Macros
#define	SH_HAS_FPU   0
#define	CPU_MODEL_NAME   "SH-Multilib"
#define	SH_HAS_SEPARATE_STACKS   1
#define	CPU_NAME   "Hitachi SH"
#define	SH_IRQDIS_MASK   0xf0
#define	sh_disable_interrupts(_level)
#define	sh_enable_interrupts(_level)
#define	sh_flash_interrupts(_level)
#define	sh_get_interrupt_level(_level)
#define	sh_set_interrupt_level(_newlevel)
#define	CPU_swap_u32(value)   sh_swap_u32( value )
#define	CPU_swap_u16(value)   sh_swap_u16( value )

Functions
unsigned int	sh_set_irq_priority (unsigned int irq, unsigned int prio)

Detailed Description

Hitachi SH CPU Department Source.

This include file contains information pertaining to the Hitachi SH processor.

Macro Definition Documentation

sh_disable_interrupts

#define sh_disable_interrupts

(

_level

)

Value:

  __asm__ volatile ( \
    "stc sr,%0\n\t" \
    "mov %0,r5\n\t" \
    "or %1,r5\n\t" \
    "ldc r5,sr\n\t"\
  : "=&r" (_level ) \
  : "r" (SH_IRQDIS_MASK) \
  : "r5" );

sh_enable_interrupts

#define sh_enable_interrupts

(

_level

)

Value:

  __asm__ volatile( "ldc %0,sr\n\t" \
    "nop\n\t" \
    :: "r" (_level) );

sh_flash_interrupts

#define sh_flash_interrupts

(

_level

)

Value:

  __asm__ volatile( \
    "stc sr,r5\n\t" \
    "ldc %1,sr\n\t" \
    "nop\n\t" \
    "or %0,r5\n\t" \
    "ldc r5,sr\n\t" \
    "nop\n\t" \
    : : "r" (SH_IRQDIS_MASK), "r" (_level) : "r5");

sh_get_interrupt_level

#define sh_get_interrupt_level

(

_level

)

Value:

{ \
  uint32_t   _tmpsr ; \
  \
  __asm__ volatile( "stc sr, %0" : "=r" (_tmpsr) ); \
  _level = (_tmpsr & 0xf0) >> 4 ; \
}

sh_set_interrupt_level

#define sh_set_interrupt_level

(

_newlevel

)

Value:

{ \
  uint32_t   _tmpsr; \
  \
  __asm__ volatile ( "stc sr, %0" : "=r" (_tmpsr) ); \
  _tmpsr = ( _tmpsr & ~0xf0 ) | ((_newlevel) << 4) ; \
  __asm__  volatile( "ldc %0,sr" :: "r" (_tmpsr) ); \
}