1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup ClassicModesImpl |
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5 | * |
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6 | * @brief Classic Modes Implementation |
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7 | */ |
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8 | |
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9 | /* COPYRIGHT (c) 1989-2008. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #ifndef _RTEMS_RTEMS_MODESIMPL_H |
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18 | #define _RTEMS_RTEMS_MODESIMPL_H |
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19 | |
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20 | #include <rtems/rtems/modes.h> |
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21 | #include <rtems/score/isrlevel.h> |
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22 | |
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23 | #ifdef __cplusplus |
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24 | extern "C" { |
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25 | #endif |
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26 | |
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27 | /** |
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28 | * @defgroup ClassicModesImpl Classic Modes Implementation |
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29 | * |
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30 | * @ingroup ClassicModes |
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31 | * |
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32 | * @{ |
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33 | */ |
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34 | |
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35 | /** |
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36 | * @brief Checks if any of the mode flags in mask are set in mode_set. |
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37 | * |
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38 | * This function returns TRUE if any of the mode flags in mask |
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39 | * are set in mode_set, and FALSE otherwise. |
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40 | */ |
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41 | RTEMS_INLINE_ROUTINE bool _Modes_Mask_changed ( |
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42 | Modes_Control mode_set, |
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43 | Modes_Control masks |
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44 | ) |
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45 | { |
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46 | return ( mode_set & masks ) ? true : false; |
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47 | } |
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48 | |
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49 | /** |
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50 | * @brief Checks if mode_set says that Asynchronous Signal Processing is disabled. |
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51 | * |
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52 | * This function returns TRUE if mode_set indicates that Asynchronous |
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53 | * Signal Processing is disabled, and FALSE otherwise. |
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54 | */ |
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55 | RTEMS_INLINE_ROUTINE bool _Modes_Is_asr_disabled ( |
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56 | Modes_Control mode_set |
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57 | ) |
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58 | { |
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59 | return (mode_set & RTEMS_ASR_MASK) == RTEMS_NO_ASR; |
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60 | } |
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61 | |
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62 | /** |
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63 | * @brief Checks if mode_set indicates that preemption is enabled. |
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64 | * |
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65 | * This function returns TRUE if mode_set indicates that preemption |
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66 | * is enabled, and FALSE otherwise. |
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67 | */ |
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68 | RTEMS_INLINE_ROUTINE bool _Modes_Is_preempt ( |
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69 | Modes_Control mode_set |
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70 | ) |
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71 | { |
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72 | return (mode_set & RTEMS_PREEMPT_MASK) == RTEMS_PREEMPT; |
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73 | } |
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74 | |
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75 | /** |
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76 | * @brief Checks if mode_set indicates that timeslicing is enabled. |
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77 | * |
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78 | * This function returns TRUE if mode_set indicates that timeslicing |
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79 | * is enabled, and FALSE otherwise. |
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80 | */ |
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81 | RTEMS_INLINE_ROUTINE bool _Modes_Is_timeslice ( |
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82 | Modes_Control mode_set |
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83 | ) |
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84 | { |
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85 | return (mode_set & RTEMS_TIMESLICE_MASK) == RTEMS_TIMESLICE; |
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86 | } |
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87 | |
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88 | /** |
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89 | * @brief Gets the interrupt level portion of the mode_set. |
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90 | * |
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91 | * This function returns the interrupt level portion of the mode_set. |
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92 | */ |
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93 | RTEMS_INLINE_ROUTINE ISR_Level _Modes_Get_interrupt_level ( |
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94 | Modes_Control mode_set |
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95 | ) |
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96 | { |
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97 | return ( mode_set & RTEMS_INTERRUPT_MASK ); |
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98 | } |
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99 | |
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100 | /** |
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101 | * @brief Sets the current interrupt level to that specified in the mode_set. |
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102 | * |
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103 | * This routine sets the current interrupt level to that specified |
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104 | * in the mode_set. |
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105 | */ |
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106 | RTEMS_INLINE_ROUTINE void _Modes_Set_interrupt_level ( |
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107 | Modes_Control mode_set |
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108 | ) |
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109 | { |
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110 | _ISR_Set_level( _Modes_Get_interrupt_level( mode_set ) ); |
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111 | } |
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112 | |
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113 | /** |
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114 | * @brief Changes the modes in old_mode_set indicated by |
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115 | * mask to the requested values in new_mode_set. |
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116 | * |
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117 | * This routine changes the modes in old_mode_set indicated by |
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118 | * mask to the requested values in new_mode_set. The resulting |
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119 | * mode set is returned in out_mode_set and the modes that changed |
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120 | * is returned in changed. |
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121 | */ |
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122 | RTEMS_INLINE_ROUTINE void _Modes_Change ( |
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123 | Modes_Control old_mode_set, |
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124 | Modes_Control new_mode_set, |
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125 | Modes_Control mask, |
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126 | Modes_Control *out_mode_set, |
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127 | Modes_Control *changed |
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128 | ) |
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129 | { |
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130 | Modes_Control _out_mode; |
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131 | |
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132 | _out_mode = old_mode_set; |
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133 | _out_mode &= ~mask; |
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134 | _out_mode |= new_mode_set & mask; |
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135 | *changed = _out_mode ^ old_mode_set; |
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136 | *out_mode_set = _out_mode; |
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137 | } |
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138 | |
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139 | #ifdef __cplusplus |
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140 | } |
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141 | #endif |
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142 | |
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143 | /**@}*/ |
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144 | |
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145 | #endif |
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146 | /* end of include file */ |
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