git.sur5r.net Git - freertos/blob - FreeRTOS/Source/portable/GCC/STR75x/portmacro.h

   1 /*\r
   2     FreeRTOS V7.4.1 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME.  PLEASE VISIT\r
   5     http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
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  10      *    Complete, revised, and edited pdf reference manuals are also       *\r
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  14      *    ensuring you get running as quickly as possible and with an        *\r
  15      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  16      *    the FreeRTOS project to continue with its mission of providing     *\r
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  19      *                                                                       *\r
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  22      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  23      *                                                                       *\r
  24     ***************************************************************************\r
  25 \r
  26 \r
  27     This file is part of the FreeRTOS distribution.\r
  28 \r
  29     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  30     the terms of the GNU General Public License (version 2) as published by the\r
  31     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  32 \r
  33     >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to\r
  34     distribute a combined work that includes FreeRTOS without being obliged to\r
  35     provide the source code for proprietary components outside of the FreeRTOS\r
  36     kernel.\r
  37 \r
  38     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  39     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  40     FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more\r
  41     details. You should have received a copy of the GNU General Public License\r
  42     and the FreeRTOS license exception along with FreeRTOS; if not it can be\r
  43     viewed here: http://www.freertos.org/a00114.html and also obtained by\r
  44     writing to Real Time Engineers Ltd., contact details for whom are available\r
  45     on the FreeRTOS WEB site.\r
  46 \r
  47     1 tab == 4 spaces!\r
  48 \r
  49     ***************************************************************************\r
  50      *                                                                       *\r
  51      *    Having a problem?  Start by reading the FAQ "My application does   *\r
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  53      *                                                                       *\r
  54      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  55      *                                                                       *\r
  56     ***************************************************************************\r
  57 \r
  58 \r
  59     http://www.FreeRTOS.org - Documentation, books, training, latest versions, \r
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  66     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High \r
  67     Integrity Systems, who sell the code with commercial support, \r
  68     indemnification and middleware, under the OpenRTOS brand.\r
  69     \r
  70     http://www.SafeRTOS.com - High Integrity Systems also provide a safety \r
  71     engineered and independently SIL3 certified version for use in safety and \r
  72     mission critical applications that require provable dependability.\r
  73 */\r
  74 \r
  75 \r
  76 #ifndef PORTMACRO_H\r
  77 #define PORTMACRO_H\r
  78 \r
  79 #ifdef __cplusplus\r
  80 extern "C" {\r
  81 #endif\r
  82 \r
  83 /*-----------------------------------------------------------\r
  84  * Port specific definitions.\r
  85  *\r
  86  * The settings in this file configure FreeRTOS correctly for the\r
  87  * given hardware and compiler.\r
  88  *\r
  89  * These settings should not be altered.\r
  90  *-----------------------------------------------------------\r
  91  */\r
  92 \r
  93 /* Type definitions. */\r
  94 #define portCHAR                char\r
  95 #define portFLOAT               float\r
  96 #define portDOUBLE              double\r
  97 #define portLONG                long\r
  98 #define portSHORT               short\r
  99 #define portSTACK_TYPE  unsigned portLONG\r
 100 #define portBASE_TYPE   portLONG\r
 101 \r
 102 #if( configUSE_16_BIT_TICKS == 1 )\r
 103         typedef unsigned portSHORT portTickType;\r
 104         #define portMAX_DELAY ( portTickType ) 0xffff\r
 105 #else\r
 106         typedef unsigned portLONG portTickType;\r
 107         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
 108 #endif\r
 109 /*-----------------------------------------------------------*/ \r
 110 \r
 111 /* Hardware specifics. */\r
 112 #define portSTACK_GROWTH                        ( -1 )\r
 113 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
 114 #define portBYTE_ALIGNMENT                      8\r
 115 #define portYIELD()                                     asm volatile ( "SWI 0" )\r
 116 #define portNOP()                                       asm volatile ( "NOP" )\r
 117 /*-----------------------------------------------------------*/ \r
 118 \r
 119 /* Critical section handling. */\r
 120 /*\r
 121  * The interrupt management utilities can only be called from ARM mode.  When\r
 122  * THUMB_INTERWORK is defined the utilities are defined as functions in \r
 123  * portISR.c to ensure a switch to ARM mode.  When THUMB_INTERWORK is not \r
 124  * defined then the utilities are defined as macros here - as per other ports.\r
 125  */\r
 126 \r
 127 #ifdef THUMB_INTERWORK\r
 128 \r
 129         extern void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));\r
 130         extern void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));\r
 131 \r
 132         #define portDISABLE_INTERRUPTS()        vPortDisableInterruptsFromThumb()\r
 133         #define portENABLE_INTERRUPTS()         vPortEnableInterruptsFromThumb()\r
 134         \r
 135 #else\r
 136 \r
 137         #define portDISABLE_INTERRUPTS()                                                                                        \\r
 138                 asm volatile (                                                                                                                  \\r
 139                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 140                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 141                         "ORR    R0, R0, #0xC0   \n\t"   /* Disable IRQ, FIQ.                    */      \\r
 142                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 143                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 144                         \r
 145         #define portENABLE_INTERRUPTS()                                                                                         \\r
 146                 asm volatile (                                                                                                                  \\r
 147                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 148                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 149                         "BIC    R0, R0, #0xC0   \n\t"   /* Enable IRQ, FIQ.                             */      \\r
 150                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 151                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 152 \r
 153 #endif /* THUMB_INTERWORK */\r
 154 \r
 155 extern void vPortEnterCritical( void );\r
 156 extern void vPortExitCritical( void );\r
 157 \r
 158 #define portENTER_CRITICAL()            vPortEnterCritical();\r
 159 #define portEXIT_CRITICAL()                     vPortExitCritical();\r
 160 /*-----------------------------------------------------------*/ \r
 161 \r
 162 /* Task utilities. */\r
 163 #define portEND_SWITCHING_ISR( xSwitchRequired )        \\r
 164 {                                                                                                       \\r
 165 extern void vTaskSwitchContext( void );                         \\r
 166                                                                                                         \\r
 167         if( xSwitchRequired )                                                   \\r
 168         {                                                                                               \\r
 169                 vTaskSwitchContext();                                           \\r
 170         }                                                                                               \\r
 171 }\r
 172 /*-----------------------------------------------------------*/ \r
 173 \r
 174 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 175 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 176 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 177 \r
 178 #ifdef __cplusplus\r
 179 }\r
 180 #endif\r
 181 \r
 182 #endif /* PORTMACRO_H */\r
 183 \r
 184 \r