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annotate packages/hal/synth/arch/current/include/hal_arch.h @ 2729:74dbf4c3f2e1 after-copyright-change-20090129

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Update all copyright banners to reflect FSF ownership; fix and improve licence text.
author jlarmour
date Thu, 29 Jan 2009 17:47:46 +0000
parents d2c90368aeef
children
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1 #ifndef CYGONCE_HAL_HAL_ARCH_H
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2 #define CYGONCE_HAL_HAL_ARCH_H
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3
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4 //=============================================================================
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5 //
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6 // hal_arch.h
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7 //
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8 // Architecture specific abstractions for synthetic target.
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9 //
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10 //=============================================================================
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11 // ####ECOSGPLCOPYRIGHTBEGIN####
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12 // -------------------------------------------
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13 // This file is part of eCos, the Embedded Configurable Operating System.
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later
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19 // version.
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20 //
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21 // eCos is distributed in the hope that it will be useful, but WITHOUT
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22 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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23 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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24 // for more details.
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25 //
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26 // You should have received a copy of the GNU General Public License
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27 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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28 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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29 //
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30 // As a special exception, if other files instantiate templates or use
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31 // macros or inline functions from this file, or you compile this file
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32 // and link it with other works to produce a work based on this file,
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33 // this file does not by itself cause the resulting work to be covered by
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34 // the GNU General Public License. However the source code for this file
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35 // must still be made available in accordance with section (3) of the GNU
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36 // General Public License v2.
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37 //
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38 // This exception does not invalidate any other reasons why a work based
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39 // on this file might be covered by the GNU General Public License.
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40 // -------------------------------------------
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41 // ####ECOSGPLCOPYRIGHTEND####
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42 //=============================================================================
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43 //#####DESCRIPTIONBEGIN####
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44 //
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45 // Author(s): proven
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46 // Contributors:proven, pjo, nickg,bartv
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47 // Date: 1998-10-05
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48 // Purpose: Define architecture abstractions
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49 // Usage: #include <cyg/hal/hal_arch.h>
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //=============================================================================
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54
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55 // ----------------------------------------------------------------------------
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56 // Architectural definitions such as processor save state information.
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57 // For the synthetic target most of this information has to be
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58 // provided by the variant HALs.
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59
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60 #include <cyg/hal/var_arch.h>
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61
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62 //-----------------------------------------------------------------------------
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63 // Exception handling function.
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64 // This function is provided by either the kernel or the common HAL to
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65 // deliver an exception to the current thread.
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66 // NOTE: the declaration should move to a common package.
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67 externC void cyg_hal_deliver_exception( CYG_WORD code, CYG_ADDRWORD data );
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68
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69 //-----------------------------------------------------------------------------
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70 // Execution reorder barrier.
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71 // When optimizing the compiler can reorder code. In multithreaded systems
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72 // where the order of actions is vital, this can sometimes cause problems.
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73 // This macro may be inserted into places where reordering should not happen.
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74
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75 #define HAL_REORDER_BARRIER() asm volatile ( "" : : : "memory" )
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76
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77 //-----------------------------------------------------------------------------
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78 // Idle thread code.
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79 // This macro is called in the idle thread loop, and gives the HAL the
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80 // chance to insert code. In the synthetic target it involves blocking
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81 // until there is a signal.
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82
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83 externC void hal_idle_thread_action(cyg_uint32 loop_count);
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84
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85 #define HAL_IDLE_THREAD_ACTION(_count_) hal_idle_thread_action(_count_)
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86
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87 //--------------------------------------------------------------------------
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88 #endif // CYGONCE_HAL_HAL_ARCH_H
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89 // End of hal_arch.h