hal_intr.h

实现快速傅立叶变换算法,provides test framwork for FFT testing

#define HAL_INTERRUPT_STACK_CALL_PENDING_DSRS() \
    hal_interrupt_stack_call_pending_DSRs()

#endif

// A separate stack always exist to allow the processor to initialize itself.
// It depends on CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK macro
// definition if this stack is used for interrupts too.

#define HAL_INTERRUPT_STACK_BASE cyg_interrupt_stack_base
#define HAL_INTERRUPT_STACK_TOP  cyg_interrupt_stack

externC char HAL_INTERRUPT_STACK_BASE[];
externC char HAL_INTERRUPT_STACK_TOP[];

// --------------------------------------------------------------------------
// Translate a vector number into an ISR table index.
/*
  2006-11-01 wl NOTE: 
  ISR tables: cyg_hal_interrupt_handlers, cyg_hal_interrupt_data, cyg_hal_interrupt_objects
  DO NOT contain No.64 interrupt. 
  The usable interrupt sources are:                 65 ~ 126 
  Corresponding eCos dev :                      ICR[0] ~ ICR[62]
  MCF5484 hardware coresponding register ICR:     ICR1 ~ ICR63
*/
#ifndef HAL_TRANSLATE_VECTOR
#define HAL_TRANSLATE_VECTOR(_vector_,_index_) (_index_) = (_vector_- CYGNUM_HAL_ISR_MIN) 
#endif

// -------------------------------------------------------------------------
// Interrupt state storage.

typedef cyg_uint16 CYG_INTERRUPT_STATE;

// --------------------------------------------------------------------------
// Interrupt and VSR attachment macros.

externC cyg_uint32 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data);

externC void hal_default_exception_handler(CYG_WORD vector,
                                           HAL_SavedRegisters *regs);

#define HAL_INTERRUPT_IN_USE( _vector_, _state_)        \
CYG_MACRO_START                                         \
    cyg_uint32 _index_;                                 \
    HAL_TRANSLATE_VECTOR ((_vector_), _index_);         \
                                                        \
    if (cyg_hal_interrupt_handlers[_index_]             \
        == (CYG_ADDRESS) &hal_default_isr)              \
        (_state_) = 0;                                  \
    else                                                \
        (_state_) = 1;                                  \
CYG_MACRO_END

/*
  2006-11-01 wl NOTE: 
  ISR tables: cyg_hal_interrupt_handlers, cyg_hal_interrupt_data, cyg_hal_interrupt_objects
  DO NOT contain No.64 interrupt. 
  The usable interrupt sources are:                 65 ~ 126 
  Corresponding eCos dev :                      ICR[0] ~ ICR[62]
  MCF5484 hardware coresponding register ICR:     ICR1 ~ ICR63
*/
#define HAL_INTERRUPT_ATTACH( _vector_, _isr_, _data_, _object_ )       \
CYG_MACRO_START                                                         \
    cyg_uint32 _index_;                                                 \
    HAL_TRANSLATE_VECTOR((_vector_), _index_);                          \
                                                                        \
    if (cyg_hal_interrupt_handlers[_index_]                             \
        == (CYG_ADDRESS) &hal_default_isr)                              \
    {                                                                   \
        cyg_hal_interrupt_handlers[_index_] = (CYG_ADDRESS)(_isr_);     \
        cyg_hal_interrupt_data[_index_] = (CYG_ADDRWORD)(_data_);       \
        cyg_hal_interrupt_objects[_index_] = (CYG_ADDRESS)(_object_);   \
    }                                                                   \
CYG_MACRO_END

#define HAL_INTERRUPT_DETACH( _vector_, _isr_ )                         \
CYG_MACRO_START                                                         \
    cyg_uint32 _index_;                                                 \
    HAL_INTERRUPT_MASK(_vector_);                                       \
    HAL_TRANSLATE_VECTOR((_vector_), _index_);                          \
    if (cyg_hal_interrupt_handlers[_index_]                             \
        == (CYG_ADDRESS)(_isr_))                                        \
    {                                                                   \
        cyg_hal_interrupt_handlers[_index_] =                           \
            (CYG_ADDRESS)&hal_default_isr;                              \
        cyg_hal_interrupt_data[_index_] = 0;                            \
        cyg_hal_interrupt_objects[_index_] = 0;                         \
    }                                                                   \
CYG_MACRO_END

#define HAL_VSR_GET( _vector_, _pvsr_ )                                 \
    *((CYG_ADDRESS *)(_pvsr_)) = cyg_hal_vsr_table[(_vector_)];


#define HAL_VSR_SET( _vector_, _vsr_, _poldvsr_ )                       \
CYG_MACRO_START                                                         \
    if( (_poldvsr_) != NULL )                                           \
        *(CYG_ADDRESS *)(_poldvsr_) = cyg_hal_vsr_table[(_vector_)];    \
    cyg_hal_vsr_table[(_vector_)] = (CYG_ADDRESS)(_vsr_);               \
CYG_MACRO_END


// This is an ugly name, but what it means is: grab the VSR back to eCos
// internal handling, or if you like, the default handler. But if
// cooperating with a ROM monitor, the default behaviour is to pass most
// exceptions to it. This macro undoes that so that eCos handles the
// exception. So use it with care.

#define HAL_VSR_SET_TO_ECOS_HANDLER( _vector_, _poldvsr_ )              \
    CYG_MACRO_START                                                     \
    if( (void*)_poldvsr_ != (void*)NULL )                               \
        *(CYG_ADDRESS *)_poldvsr_ = cyg_hal_vsr_table[_vector_];        \
    cyg_hal_vsr_table[_vector_] = rom_vsr_table[_vector_];              \
    CYG_MACRO_END

// -------------------------------------------------------------------------
// Interrupt control macros.

// The following interrupt control macros are the default for the ColdFire
// architecture. Some processor variants will override these definitions in
// their var_intr.h file.

#ifndef HAL_CF_SET_SR
#define HAL_CF_SET_SR(__newsr__)                                            \
    CYG_MACRO_START                                                         \
    asm volatile ("move.w   %0,%%sr\n"                                      \
                  :                                                         \
                  : "d" ((CYG_INTERRUPT_STATE)(__newsr__)));                \
    CYG_MACRO_END
#endif // HAL_CF_SET_SR

#ifndef HAL_ENABLE_INTERRUPTS
#define HAL_ENABLE_INTERRUPTS()                                             \
    CYG_MACRO_START                                                         \
    CYG_INTERRUPT_STATE _msk_;                                              \
    HAL_QUERY_INTERRUPTS(_msk_);                                            \
    HAL_CF_SET_SR((_msk_ & (CYG_INTERRUPT_STATE)0xf8ff));                   \
    CYG_MACRO_END
#endif // HAL_ENABLE_INTERRUPTS

#ifndef HAL_DISABLE_INTERRUPTS
#define HAL_DISABLE_INTERRUPTS(_old_)                                       \
    CYG_MACRO_START                                                         \
    HAL_QUERY_INTERRUPTS(_old_);                                            \
    HAL_CF_SET_SR((_old_ | (CYG_INTERRUPT_STATE)0x0700));                   \
    CYG_MACRO_END
#endif //HAL_DISABLE_INTERRUPTS


#ifndef HAL_RESTORE_INTERRUPTS
#define HAL_RESTORE_INTERRUPTS(_prev_)                                      \
    CYG_MACRO_START                                                         \
    CYG_INTERRUPT_STATE _msk_;                                              \
    HAL_QUERY_INTERRUPTS(_msk_);                                            \
    _msk_ &= (CYG_INTERRUPT_STATE)0xf8ff;                                   \
    _msk_ |= (((CYG_INTERRUPT_STATE)(_prev_))                               \
              & (CYG_INTERRUPT_STATE)0x0700);                               \
    asm volatile ("move.w   %0,%%sr\n"                                      \
                  :                                                         \
                  : "d" (_msk_));                                           \
    CYG_MACRO_END
#endif // HAL_RESTORE_INTERRUPTS

// Use the extra assignment to avoid warnings.
// The compiler should optimize it out.
#ifndef HAL_QUERY_INTERRUPTS
#define HAL_QUERY_INTERRUPTS(__oldmask__)                                   \
    CYG_MACRO_START                                                         \
    CYG_INTERRUPT_STATE _omsk_ = (CYG_INTERRUPT_STATE)(__oldmask__);        \
    asm volatile ("move.w   %%sr,%0\n"                                      \
                  : "=d" (_omsk_)                                           \
                  : );                                                      \
    (__oldmask__) = (__typeof__(__oldmask__))_omsk_;                        \
    CYG_MACRO_END
#endif // HAL_QUERY_INTERRUPTS

// ---------------------------------------------------------------------------
// End of hal_intr.h
#endif // ifndef CYGONCE_HAL_HAL_INTR_H