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

   1 /*\r
   2     FreeRTOS V7.5.1 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   5 \r
   6     ***************************************************************************\r
   7      *                                                                       *\r
   8      *    FreeRTOS provides completely free yet professionally developed,    *\r
   9      *    robust, strictly quality controlled, supported, and cross          *\r
  10      *    platform software that has become a de facto standard.             *\r
  11      *                                                                       *\r
  12      *    Help yourself get started quickly and support the FreeRTOS         *\r
  13      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  14      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  15      *                                                                       *\r
  16      *    Thank you!                                                         *\r
  17      *                                                                       *\r
  18     ***************************************************************************\r
  19 \r
  20     This file is part of the FreeRTOS distribution.\r
  21 \r
  22     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  23     the terms of the GNU General Public License (version 2) as published by the\r
  24     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  25 \r
  26     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
  27     >>! a combined work that includes FreeRTOS without being obliged to provide\r
  28     >>! the source code for proprietary components outside of the FreeRTOS\r
  29     >>! kernel.\r
  30 \r
  31     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  32     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  33     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  34     link: http://www.freertos.org/a00114.html\r
  35 \r
  36     1 tab == 4 spaces!\r
  37 \r
  38     ***************************************************************************\r
  39      *                                                                       *\r
  40      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  41      *    not run, what could be wrong?"                                     *\r
  42      *                                                                       *\r
  43      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  44      *                                                                       *\r
  45     ***************************************************************************\r
  46 \r
  47     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  48     license and Real Time Engineers Ltd. contact details.\r
  49 \r
  50     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  51     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  52     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  53 \r
  54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  55     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  56     licenses offer ticketed support, indemnification and middleware.\r
  57 \r
  58     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  59     engineered and independently SIL3 certified version for use in safety and\r
  60     mission critical applications that require provable dependability.\r
  61 \r
  62     1 tab == 4 spaces!\r
  63 */\r
  64 \r
  65 \r
  66 #ifndef PORTMACRO_H\r
  67 #define PORTMACRO_H\r
  68 \r
  69 #ifdef __cplusplus\r
  70 extern "C" {\r
  71 #endif\r
  72 \r
  73 /*-----------------------------------------------------------\r
  74  * Port specific definitions.\r
  75  *\r
  76  * The settings in this file configure FreeRTOS correctly for the\r
  77  * given hardware and compiler.\r
  78  *\r
  79  * These settings should not be altered.\r
  80  *-----------------------------------------------------------\r
  81  */\r
  82 \r
  83 /* Type definitions. */\r
  84 #define portCHAR                char\r
  85 #define portFLOAT               float\r
  86 #define portDOUBLE              double\r
  87 #define portLONG                long\r
  88 #define portSHORT               short\r
  89 #define portSTACK_TYPE  unsigned portLONG\r
  90 #define portBASE_TYPE   portLONG\r
  91 \r
  92 #if( configUSE_16_BIT_TICKS == 1 )\r
  93         typedef unsigned portSHORT portTickType;\r
  94         #define portMAX_DELAY ( portTickType ) 0xffff\r
  95 #else\r
  96         typedef unsigned portLONG portTickType;\r
  97         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  98 #endif\r
  99 /*-----------------------------------------------------------*/ \r
 100 \r
 101 /* Hardware specifics. */\r
 102 #define portSTACK_GROWTH                        ( -1 )\r
 103 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
 104 #define portBYTE_ALIGNMENT                      8\r
 105 #define portYIELD()                                     asm volatile ( "SWI 0" )\r
 106 #define portNOP()                                       asm volatile ( "NOP" )\r
 107 /*-----------------------------------------------------------*/ \r
 108 \r
 109 /* Critical section handling. */\r
 110 /*\r
 111  * The interrupt management utilities can only be called from ARM mode.  When\r
 112  * THUMB_INTERWORK is defined the utilities are defined as functions in \r
 113  * portISR.c to ensure a switch to ARM mode.  When THUMB_INTERWORK is not \r
 114  * defined then the utilities are defined as macros here - as per other ports.\r
 115  */\r
 116 \r
 117 #ifdef THUMB_INTERWORK\r
 118 \r
 119         extern void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));\r
 120         extern void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));\r
 121 \r
 122         #define portDISABLE_INTERRUPTS()        vPortDisableInterruptsFromThumb()\r
 123         #define portENABLE_INTERRUPTS()         vPortEnableInterruptsFromThumb()\r
 124         \r
 125 #else\r
 126 \r
 127         #define portDISABLE_INTERRUPTS()                                                                                        \\r
 128                 asm volatile (                                                                                                                  \\r
 129                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 130                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 131                         "ORR    R0, R0, #0xC0   \n\t"   /* Disable IRQ, FIQ.                    */      \\r
 132                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 133                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 134                         \r
 135         #define portENABLE_INTERRUPTS()                                                                                         \\r
 136                 asm volatile (                                                                                                                  \\r
 137                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 138                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 139                         "BIC    R0, R0, #0xC0   \n\t"   /* Enable IRQ, FIQ.                             */      \\r
 140                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 141                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 142 \r
 143 #endif /* THUMB_INTERWORK */\r
 144 \r
 145 extern void vPortEnterCritical( void );\r
 146 extern void vPortExitCritical( void );\r
 147 \r
 148 #define portENTER_CRITICAL()            vPortEnterCritical();\r
 149 #define portEXIT_CRITICAL()                     vPortExitCritical();\r
 150 /*-----------------------------------------------------------*/ \r
 151 \r
 152 /* Task utilities. */\r
 153 #define portEND_SWITCHING_ISR( xSwitchRequired )        \\r
 154 {                                                                                                       \\r
 155 extern void vTaskSwitchContext( void );                         \\r
 156                                                                                                         \\r
 157         if( xSwitchRequired )                                                   \\r
 158         {                                                                                               \\r
 159                 vTaskSwitchContext();                                           \\r
 160         }                                                                                               \\r
 161 }\r
 162 /*-----------------------------------------------------------*/ \r
 163 \r
 164 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 165 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 166 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 167 \r
 168 #ifdef __cplusplus\r
 169 }\r
 170 #endif\r
 171 \r
 172 #endif /* PORTMACRO_H */\r
 173 \r
 174 \r