begriffs open source - freertos/blob - Source/portable/GCC/STR75x/portmacro.h

   1 /*\r
   2         FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.\r
   3 \r
   4         This file is part of the FreeRTOS.org distribution.\r
   5 \r
   6         FreeRTOS.org is free software; you can redistribute it and/or modify\r
   7         it under the terms of the GNU General Public License as published by\r
   8         the Free Software Foundation; either version 2 of the License, or\r
   9         (at your option) any later version.\r
  10 \r
  11         FreeRTOS.org is distributed in the hope that it will be useful,\r
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14         GNU General Public License for more details.\r
  15 \r
  16         You should have received a copy of the GNU General Public License\r
  17         along with FreeRTOS.org; if not, write to the Free Software\r
  18         Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
  19 \r
  20         A special exception to the GPL can be applied should you wish to distribute\r
  21         a combined work that includes FreeRTOS.org, without being obliged to provide\r
  22         the source code for any proprietary components.  See the licensing section\r
  23         of http://www.FreeRTOS.org for full details of how and when the exception\r
  24         can be applied.\r
  25 \r
  26         ***************************************************************************\r
  27 \r
  28         Please ensure to read the configuration and relevant port sections of the \r
  29         online documentation.\r
  30 \r
  31         +++ http://www.FreeRTOS.org +++\r
  32         Documentation, latest information, license and contact details.  \r
  33 \r
  34         +++ http://www.SafeRTOS.com +++\r
  35         A version that is certified for use in safety critical systems.\r
  36 \r
  37         +++ http://www.OpenRTOS.com +++\r
  38         Commercial support, development, porting, licensing and training services.\r
  39 \r
  40         ***************************************************************************\r
  41 */\r
  42 \r
  43 \r
  44 #ifndef PORTMACRO_H\r
  45 #define PORTMACRO_H\r
  46 \r
  47 #ifdef __cplusplus\r
  48 extern "C" {\r
  49 #endif\r
  50 \r
  51 /*-----------------------------------------------------------\r
  52  * Port specific definitions.\r
  53  *\r
  54  * The settings in this file configure FreeRTOS correctly for the\r
  55  * given hardware and compiler.\r
  56  *\r
  57  * These settings should not be altered.\r
  58  *-----------------------------------------------------------\r
  59  */\r
  60 \r
  61 /* Type definitions. */\r
  62 #define portCHAR                char\r
  63 #define portFLOAT               float\r
  64 #define portDOUBLE              double\r
  65 #define portLONG                long\r
  66 #define portSHORT               short\r
  67 #define portSTACK_TYPE  unsigned portLONG\r
  68 #define portBASE_TYPE   portLONG\r
  69 \r
  70 #if( configUSE_16_BIT_TICKS == 1 )\r
  71         typedef unsigned portSHORT portTickType;\r
  72         #define portMAX_DELAY ( portTickType ) 0xffff\r
  73 #else\r
  74         typedef unsigned portLONG portTickType;\r
  75         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  76 #endif\r
  77 /*-----------------------------------------------------------*/ \r
  78 \r
  79 /* Hardware specifics. */\r
  80 #define portSTACK_GROWTH                        ( -1 )\r
  81 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
  82 #define portBYTE_ALIGNMENT                      4\r
  83 #define portYIELD()                                     asm volatile ( "SWI 0" )\r
  84 #define portNOP()                                       asm volatile ( "NOP" )\r
  85 /*-----------------------------------------------------------*/ \r
  86 \r
  87 /* Critical section handling. */\r
  88 /*\r
  89  * The interrupt management utilities can only be called from ARM mode.  When\r
  90  * THUMB_INTERWORK is defined the utilities are defined as functions in \r
  91  * portISR.c to ensure a switch to ARM mode.  When THUMB_INTERWORK is not \r
  92  * defined then the utilities are defined as macros here - as per other ports.\r
  93  */\r
  94 \r
  95 #ifdef THUMB_INTERWORK\r
  96 \r
  97         extern void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));\r
  98         extern void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));\r
  99 \r
 100         #define portDISABLE_INTERRUPTS()        vPortDisableInterruptsFromThumb()\r
 101         #define portENABLE_INTERRUPTS()         vPortEnableInterruptsFromThumb()\r
 102         \r
 103 #else\r
 104 \r
 105         #define portDISABLE_INTERRUPTS()                                                                                        \\r
 106                 asm volatile (                                                                                                                  \\r
 107                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 108                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 109                         "ORR    R0, R0, #0xC0   \n\t"   /* Disable IRQ, FIQ.                    */      \\r
 110                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 111                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 112                         \r
 113         #define portENABLE_INTERRUPTS()                                                                                         \\r
 114                 asm volatile (                                                                                                                  \\r
 115                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 116                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 117                         "BIC    R0, R0, #0xC0   \n\t"   /* Enable IRQ, FIQ.                             */      \\r
 118                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 119                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 120 \r
 121 #endif /* THUMB_INTERWORK */\r
 122 \r
 123 extern void vPortEnterCritical( void );\r
 124 extern void vPortExitCritical( void );\r
 125 \r
 126 #define portENTER_CRITICAL()            vPortEnterCritical();\r
 127 #define portEXIT_CRITICAL()                     vPortExitCritical();\r
 128 /*-----------------------------------------------------------*/ \r
 129 \r
 130 /* Task utilities. */\r
 131 #define portEND_SWITCHING_ISR( xSwitchRequired )        \\r
 132 {                                                                                                       \\r
 133 extern void vTaskSwitchContext( void );                         \\r
 134                                                                                                         \\r
 135         if( xSwitchRequired )                                                   \\r
 136         {                                                                                               \\r
 137                 vTaskSwitchContext();                                           \\r
 138         }                                                                                               \\r
 139 }\r
 140 /*-----------------------------------------------------------*/ \r
 141 \r
 142 /* Compiler specifics */\r
 143 #define inline\r
 144 \r
 145 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 146 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 147 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 148 \r
 149 #ifdef __cplusplus\r
 150 }\r
 151 #endif\r
 152 \r
 153 #endif /* PORTMACRO_H */\r
 154 \r
 155 \r