1 | /* |
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2 | * Workspace Handler |
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3 | * |
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4 | * COPYRIGHT (c) 1989-2009. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #if HAVE_CONFIG_H |
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15 | #include "config.h" |
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16 | #endif |
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17 | |
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18 | #include <rtems/system.h> |
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19 | #include <rtems/config.h> |
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20 | #include <rtems/score/wkspace.h> |
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21 | #include <rtems/score/interr.h> |
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22 | #include <rtems/config.h> |
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23 | |
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24 | #include <string.h> /* for memset */ |
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25 | |
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26 | /* #define DEBUG_WORKSPACE */ |
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27 | #if defined(DEBUG_WORKSPACE) |
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28 | #include <rtems/bspIo.h> |
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29 | #endif |
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30 | |
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31 | /* |
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32 | * _Workspace_Handler_initialization |
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33 | */ |
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34 | void _Workspace_Handler_initialization(void) |
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35 | { |
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36 | uint32_t memory_available; |
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37 | void *starting_address; |
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38 | size_t size; |
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39 | |
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40 | starting_address = Configuration.work_space_start; |
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41 | size = Configuration.work_space_size; |
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42 | |
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43 | if ( !starting_address || !_Addresses_Is_aligned( starting_address ) ) |
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44 | _Internal_error_Occurred( |
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45 | INTERNAL_ERROR_CORE, |
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46 | true, |
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47 | INTERNAL_ERROR_INVALID_WORKSPACE_ADDRESS |
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48 | ); |
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49 | |
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50 | if ( Configuration.do_zero_of_workspace ) |
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51 | memset( starting_address, 0, size ); |
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52 | |
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53 | memory_available = _Heap_Initialize( |
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54 | &_Workspace_Area, |
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55 | starting_address, |
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56 | size, |
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57 | CPU_HEAP_ALIGNMENT |
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58 | ); |
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59 | |
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60 | if ( memory_available == 0 ) |
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61 | _Internal_error_Occurred( |
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62 | INTERNAL_ERROR_CORE, |
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63 | true, |
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64 | INTERNAL_ERROR_TOO_LITTLE_WORKSPACE |
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65 | ); |
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66 | } |
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67 | |
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68 | /* |
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69 | * _Workspace_Allocate |
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70 | */ |
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71 | void *_Workspace_Allocate( |
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72 | size_t size |
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73 | ) |
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74 | { |
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75 | void *memory; |
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76 | |
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77 | memory = _Heap_Allocate( &_Workspace_Area, size ); |
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78 | #if defined(DEBUG_WORKSPACE) |
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79 | printk( |
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80 | "Workspace_Allocate(%d) from %p/%p -> %p\n", |
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81 | size, |
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82 | __builtin_return_address( 0 ), |
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83 | __builtin_return_address( 1 ), |
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84 | memory |
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85 | ); |
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86 | #endif |
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87 | return memory; |
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88 | } |
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89 | |
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90 | /* |
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91 | * _Workspace_Free |
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92 | */ |
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93 | bool _Workspace_Free( |
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94 | void *block |
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95 | ) |
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96 | { |
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97 | #if defined(DEBUG_WORKSPACE) |
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98 | printk( |
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99 | "Workspace_Free(%p) from %p/%p\n", |
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100 | block, |
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101 | __builtin_return_address( 0 ), |
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102 | __builtin_return_address( 1 ) |
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103 | ); |
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104 | #endif |
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105 | return _Heap_Free( &_Workspace_Area, block ); |
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106 | } |
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107 | |
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108 | /* |
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109 | * _Workspace_Allocate_or_fatal_error |
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110 | */ |
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111 | void *_Workspace_Allocate_or_fatal_error( |
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112 | size_t size |
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113 | ) |
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114 | { |
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115 | void *memory; |
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116 | |
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117 | memory = _Heap_Allocate( &_Workspace_Area, size ); |
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118 | #if defined(DEBUG_WORKSPACE) |
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119 | printk( |
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120 | "Workspace_Allocate_or_fatal_error(%d) from %p/%p -> %p\n", |
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121 | size, |
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122 | __builtin_return_address( 0 ), |
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123 | __builtin_return_address( 1 ), |
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124 | memory |
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125 | ); |
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126 | #endif |
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127 | |
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128 | if ( memory == NULL ) |
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129 | _Internal_error_Occurred( |
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130 | INTERNAL_ERROR_CORE, |
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131 | true, |
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132 | INTERNAL_ERROR_WORKSPACE_ALLOCATION |
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133 | ); |
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134 | |
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135 | return memory; |
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136 | } |
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