#ifndef CYGONCE_HAL_HAL_ARCH_H
#define CYGONCE_HAL_HAL_ARCH_H

//=============================================================================
//
//      hal_arch.h
//
//      Architecture specific abstractions for synthetic target.
//
//=============================================================================
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//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   proven
// Contributors:proven, pjo, nickg,bartv
// Date:        1998-10-05
// Purpose:     Define architecture abstractions
// Usage:       #include <cyg/hal/hal_arch.h>
//
//####DESCRIPTIONEND####
//
//=============================================================================

// ----------------------------------------------------------------------------
// Architectural definitions such as processor save state information.
// For the synthetic target most of this information has to be
// provided by the variant HALs.

#include <cyg/hal/var_arch.h>

//-----------------------------------------------------------------------------
// Exception handling function.
// This function is provided by either the kernel or the common HAL to
// deliver an exception to the current thread.
// NOTE: the declaration should move to a common package. 
externC void cyg_hal_deliver_exception( CYG_WORD code, CYG_ADDRWORD data );

//-----------------------------------------------------------------------------
// Execution reorder barrier.
// When optimizing the compiler can reorder code. In multithreaded systems
// where the order of actions is vital, this can sometimes cause problems.
// This macro may be inserted into places where reordering should not happen.

#define HAL_REORDER_BARRIER() asm volatile ( "" : : : "memory" )

//-----------------------------------------------------------------------------
// Idle thread code.
// This macro is called in the idle thread loop, and gives the HAL the
// chance to insert code. In the synthetic target it involves blocking
// until there is a signal.

externC void hal_idle_thread_action(cyg_uint32 loop_count);

#define HAL_IDLE_THREAD_ACTION(_count_) hal_idle_thread_action(_count_)

//--------------------------------------------------------------------------
#endif // CYGONCE_HAL_HAL_ARCH_H
// End of hal_arch.h
