| 1 |
27 |
unneback |
#ifndef CYGONCE_HAL_HAL_ARCH_H
|
| 2 |
|
|
#define CYGONCE_HAL_HAL_ARCH_H
|
| 3 |
|
|
|
| 4 |
|
|
//=============================================================================
|
| 5 |
|
|
//
|
| 6 |
|
|
// hal_arch.h
|
| 7 |
|
|
//
|
| 8 |
|
|
// Architecture specific abstractions for synthetic target.
|
| 9 |
|
|
//
|
| 10 |
|
|
//=============================================================================
|
| 11 |
|
|
//####ECOSGPLCOPYRIGHTBEGIN####
|
| 12 |
|
|
// -------------------------------------------
|
| 13 |
|
|
// This file is part of eCos, the Embedded Configurable Operating System.
|
| 14 |
|
|
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
|
| 15 |
|
|
//
|
| 16 |
|
|
// eCos is free software; you can redistribute it and/or modify it under
|
| 17 |
|
|
// the terms of the GNU General Public License as published by the Free
|
| 18 |
|
|
// Software Foundation; either version 2 or (at your option) any later version.
|
| 19 |
|
|
//
|
| 20 |
|
|
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
|
| 21 |
|
|
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
| 22 |
|
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
| 23 |
|
|
// for more details.
|
| 24 |
|
|
//
|
| 25 |
|
|
// You should have received a copy of the GNU General Public License along
|
| 26 |
|
|
// with eCos; if not, write to the Free Software Foundation, Inc.,
|
| 27 |
|
|
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
| 28 |
|
|
//
|
| 29 |
|
|
// As a special exception, if other files instantiate templates or use macros
|
| 30 |
|
|
// or inline functions from this file, or you compile this file and link it
|
| 31 |
|
|
// with other works to produce a work based on this file, this file does not
|
| 32 |
|
|
// by itself cause the resulting work to be covered by the GNU General Public
|
| 33 |
|
|
// License. However the source code for this file must still be made available
|
| 34 |
|
|
// in accordance with section (3) of the GNU General Public License.
|
| 35 |
|
|
//
|
| 36 |
|
|
// This exception does not invalidate any other reasons why a work based on
|
| 37 |
|
|
// this file might be covered by the GNU General Public License.
|
| 38 |
|
|
//
|
| 39 |
|
|
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
|
| 40 |
|
|
// at http://sources.redhat.com/ecos/ecos-license/
|
| 41 |
|
|
// -------------------------------------------
|
| 42 |
|
|
//####ECOSGPLCOPYRIGHTEND####
|
| 43 |
|
|
//=============================================================================
|
| 44 |
|
|
//#####DESCRIPTIONBEGIN####
|
| 45 |
|
|
//
|
| 46 |
|
|
// Author(s): proven
|
| 47 |
|
|
// Contributors:proven, pjo, nickg,bartv
|
| 48 |
|
|
// Date: 1998-10-05
|
| 49 |
|
|
// Purpose: Define architecture abstractions
|
| 50 |
|
|
// Usage: #include <cyg/hal/hal_arch.h>
|
| 51 |
|
|
//
|
| 52 |
|
|
//####DESCRIPTIONEND####
|
| 53 |
|
|
//
|
| 54 |
|
|
//=============================================================================
|
| 55 |
|
|
|
| 56 |
|
|
// ----------------------------------------------------------------------------
|
| 57 |
|
|
// Architectural definitions such as processor save state information.
|
| 58 |
|
|
// For the synthetic target most of this information has to be
|
| 59 |
|
|
// provided by the variant HALs.
|
| 60 |
|
|
|
| 61 |
|
|
#include <cyg/hal/var_arch.h>
|
| 62 |
|
|
|
| 63 |
|
|
//-----------------------------------------------------------------------------
|
| 64 |
|
|
// Exception handling function.
|
| 65 |
|
|
// This function is provided by either the kernel or the common HAL to
|
| 66 |
|
|
// deliver an exception to the current thread.
|
| 67 |
|
|
// NOTE: the declaration should move to a common package.
|
| 68 |
|
|
externC void cyg_hal_deliver_exception( CYG_WORD code, CYG_ADDRWORD data );
|
| 69 |
|
|
|
| 70 |
|
|
//-----------------------------------------------------------------------------
|
| 71 |
|
|
// Execution reorder barrier.
|
| 72 |
|
|
// When optimizing the compiler can reorder code. In multithreaded systems
|
| 73 |
|
|
// where the order of actions is vital, this can sometimes cause problems.
|
| 74 |
|
|
// This macro may be inserted into places where reordering should not happen.
|
| 75 |
|
|
|
| 76 |
|
|
#define HAL_REORDER_BARRIER() asm volatile ( "" : : : "memory" )
|
| 77 |
|
|
|
| 78 |
|
|
//-----------------------------------------------------------------------------
|
| 79 |
|
|
// Idle thread code.
|
| 80 |
|
|
// This macro is called in the idle thread loop, and gives the HAL the
|
| 81 |
|
|
// chance to insert code. In the synthetic target it involves blocking
|
| 82 |
|
|
// until there is a signal.
|
| 83 |
|
|
|
| 84 |
|
|
externC void hal_idle_thread_action(cyg_uint32 loop_count);
|
| 85 |
|
|
|
| 86 |
|
|
#define HAL_IDLE_THREAD_ACTION(_count_) hal_idle_thread_action(_count_)
|
| 87 |
|
|
|
| 88 |
|
|
//--------------------------------------------------------------------------
|
| 89 |
|
|
#endif // CYGONCE_HAL_HAL_ARCH_H
|
| 90 |
|
|
// End of hal_arch.h
|
