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annotate packages/hal/sh/edk/current/include/platform.inc @ 76:435cced73e2f ecos-v1_3_1-release

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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
parents
children 6736c52df507
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435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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1 #ifndef CYGONCE_HAL_PLATFORM_INC
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2 #define CYGONCE_HAL_PLATFORM_INC
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3 ##=============================================================================
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4 ##
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5 ## platform.inc
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6 ##
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7 ## SH/EDK7708 board assembler header file
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8 ##
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9 ##=============================================================================
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10 #####COPYRIGHTBEGIN####
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11 #
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12 # -------------------------------------------
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13 # The contents of this file are subject to the Red Hat eCos Public License
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14 # Version 1.0 (the "License"); you may not use this file except in
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15 # compliance with the License. You may obtain a copy of the License at
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16 # http://sourceware.cygnus.com/ecos
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17 #
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18 # Software distributed under the License is distributed on an
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19 # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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20 # License for the specific language governing rights and limitations under
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21 # the License.
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22 #
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23 # The Original Code is eCos - Embedded Configurable Operating System,
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24 # released September 30, 1998.
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25 #
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26 # The Initial Developer of the Original Code is Red Hat.
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27 # Portions created by Red Hat are
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28 # Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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29 # All Rights Reserved.
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30 # -------------------------------------------
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31 #
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32 #####COPYRIGHTEND####
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33 ##=============================================================================
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34 #######DESCRIPTIONBEGIN####
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35 ##
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36 ## Author(s): jskov
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37 ## Contributors:jskov
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38 ## Date: 2000-02-02
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39 ## Purpose: SH/EDK7708 board definitions.
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40 ## Description: This file contains various definitions and macros that are
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41 ## useful for writing assembly code for the SH/EDK7708 board.
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42 ## Usage:
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43 ## #include <cyg/hal/platform.inc>
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44 ## ...
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45 ##
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46 ##
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47 ######DESCRIPTIONEND####
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48 ##
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49 ##=============================================================================
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50
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51 #include <pkgconf/hal.h>
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52
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53 #include <cyg/hal/sh_offsets.inc>
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54
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55 #------------------------------------------------------------------------------
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56 # Monitor initialization.
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57
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58 #ifndef CYGPKG_HAL_SH_MON_DEFINED
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59
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60 #if defined(CYG_HAL_STARTUP_ROM) || \
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61 ( defined(CYG_HAL_STARTUP_RAM) && \
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62 !defined(CYGSEM_HAL_USE_ROM_MONITOR))
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63
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64 # If we are starting up from ROM, or we are starting in
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65 # RAM and NOT using a ROM monitor, initialize the VSR table.
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66
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67 .macro hal_mon_init
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68 mov.l $_hal_vsr_table_p,r3
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69 # Write exception vectors
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70 mov.l $_cyg_hal_default_exception_vsr_p,r4
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71 mov #CYGNUM_HAL_VSR_EXCEPTION_COUNT,r5
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72 1: mov.l r4,@r3
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73 add #4,r3
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74 dt r5
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75 bf 1b
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76 # Write interrupt vector
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77 mov.l $_cyg_hal_default_interrupt_vsr_p,r4
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78 mov.l r4,@r3
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79 bra 2f
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80 nop
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81 .align 2
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82
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83 $_cyg_hal_default_exception_vsr_p:
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84 .long _cyg_hal_default_exception_vsr
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85 $_cyg_hal_default_interrupt_vsr_p:
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86 .long _cyg_hal_default_interrupt_vsr
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87
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88 .extern _hal_vsr_table
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89 $_hal_vsr_table_p:
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90 .long _hal_vsr_table
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91
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92 2:
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93 .endm
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94
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95 #elif defined(CYG_HAL_STARTUP_RAM) && defined(CYGSEM_HAL_USE_ROM_MONITOR)
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96
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97 # Initialize the VSR table entries
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98 # We only take control of the interrupt vector,
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99 # the rest are left to the ROM for now...
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100
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101 .macro hal_mon_init
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102 # Write interrupt vector
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103 mov.l $_hal_vsr_table_p,r3
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104 mov.l $_cyg_hal_default_interrupt_vsr_p,r4
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105 mov.l r4,@r3
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106 bra 2f
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107 nop
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108 .align 2
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109
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110 $_cyg_hal_default_interrupt_vsr_p:
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111 .long _cyg_hal_default_interrupt_vsr
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112
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113 .extern _hal_vsr_table
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114 $_hal_vsr_table_p:
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115 .long _hal_vsr_table+CYGNUM_HAL_VECTOR_INTERRUPT*4
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116
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117 2:
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118 .endm
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119
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120 #else
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121
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122 .macro hal_mon_init
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123 .endm
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124
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125 #endif
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126
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127
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128 #define CYGPKG_HAL_SH_MON_DEFINED
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129
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
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130 #endif // CYGPKG_HAL_SH_MON_DEFINED
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
131
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
132 #endif // CYGONCE_HAL_PLATFORM_INC