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

   1 /*\r
   2  * FreeRTOS Kernel V10.3.1\r
   3  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.\r
   4  *\r
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
   6  * this software and associated documentation files (the "Software"), to deal in\r
   7  * the Software without restriction, including without limitation the rights to\r
   8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
   9  * the Software, and to permit persons to whom the Software is furnished to do so,\r
  10  * subject to the following conditions:\r
  11  *\r
  12  * The above copyright notice and this permission notice shall be included in all\r
  13  * copies or substantial portions of the Software.\r
  14  *\r
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
  17  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
  18  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
  19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  21  *\r
  22  * http://www.FreeRTOS.org\r
  23  * http://aws.amazon.com/freertos\r
  24  *\r
  25  */\r
  26 \r
  27 \r
  28 #ifndef PORTMACRO_H\r
  29 #define PORTMACRO_H\r
  30 \r
  31 #ifdef __cplusplus\r
  32 extern "C" {\r
  33 #endif\r
  34 \r
  35 /*-----------------------------------------------------------\r
  36  * Port specific definitions.\r
  37  *\r
  38  * The settings in this file configure FreeRTOS correctly for the\r
  39  * given hardware and compiler.\r
  40  *\r
  41  * These settings should not be altered.\r
  42  *-----------------------------------------------------------\r
  43  */\r
  44 \r
  45 /* Type definitions. */\r
  46 #define portCHAR                char\r
  47 #define portFLOAT               float\r
  48 #define portDOUBLE              double\r
  49 #define portLONG                long\r
  50 #define portSHORT               short\r
  51 #define portSTACK_TYPE  uint32_t\r
  52 #define portBASE_TYPE   long\r
  53 \r
  54 typedef portSTACK_TYPE StackType_t;\r
  55 typedef long BaseType_t;\r
  56 typedef unsigned long UBaseType_t;\r
  57 \r
  58 #if( configUSE_16_BIT_TICKS == 1 )\r
  59         typedef uint16_t TickType_t;\r
  60         #define portMAX_DELAY ( TickType_t ) 0xffff\r
  61 #else\r
  62         typedef uint32_t TickType_t;\r
  63         #define portMAX_DELAY ( TickType_t ) 0xffffffffUL\r
  64 #endif\r
  65 /*-----------------------------------------------------------*/\r
  66 \r
  67 /* Hardware specifics. */\r
  68 #define portSTACK_GROWTH                        ( -1 )\r
  69 #define portTICK_PERIOD_MS                      ( ( TickType_t ) 1000 / configTICK_RATE_HZ )\r
  70 #define portBYTE_ALIGNMENT                      8\r
  71 #define portYIELD()                                     asm volatile ( "SWI 0" )\r
  72 #define portNOP()                                       asm volatile ( "NOP" )\r
  73 /*-----------------------------------------------------------*/\r
  74 \r
  75 /* Critical section handling. */\r
  76 /*\r
  77  * The interrupt management utilities can only be called from ARM mode.  When\r
  78  * THUMB_INTERWORK is defined the utilities are defined as functions in\r
  79  * portISR.c to ensure a switch to ARM mode.  When THUMB_INTERWORK is not\r
  80  * defined then the utilities are defined as macros here - as per other ports.\r
  81  */\r
  82 \r
  83 #ifdef THUMB_INTERWORK\r
  84 \r
  85         extern void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));\r
  86         extern void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));\r
  87 \r
  88         #define portDISABLE_INTERRUPTS()        vPortDisableInterruptsFromThumb()\r
  89         #define portENABLE_INTERRUPTS()         vPortEnableInterruptsFromThumb()\r
  90 \r
  91 #else\r
  92 \r
  93         #define portDISABLE_INTERRUPTS()                                                                                        \\r
  94                 asm volatile (                                                                                                                  \\r
  95                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
  96                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
  97                         "ORR    R0, R0, #0xC0   \n\t"   /* Disable IRQ, FIQ.                    */      \\r
  98                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
  99                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 100 \r
 101         #define portENABLE_INTERRUPTS()                                                                                         \\r
 102                 asm volatile (                                                                                                                  \\r
 103                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 104                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 105                         "BIC    R0, R0, #0xC0   \n\t"   /* Enable IRQ, FIQ.                             */      \\r
 106                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 107                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 108 \r
 109 #endif /* THUMB_INTERWORK */\r
 110 \r
 111 extern void vPortEnterCritical( void );\r
 112 extern void vPortExitCritical( void );\r
 113 \r
 114 #define portENTER_CRITICAL()            vPortEnterCritical();\r
 115 #define portEXIT_CRITICAL()                     vPortExitCritical();\r
 116 /*-----------------------------------------------------------*/\r
 117 \r
 118 /* Task utilities. */\r
 119 #define portEND_SWITCHING_ISR( xSwitchRequired )        \\r
 120 {                                                                                                       \\r
 121 extern void vTaskSwitchContext( void );                         \\r
 122                                                                                                         \\r
 123         if( xSwitchRequired )                                                   \\r
 124         {                                                                                               \\r
 125                 vTaskSwitchContext();                                           \\r
 126         }                                                                                               \\r
 127 }\r
 128 /*-----------------------------------------------------------*/\r
 129 \r
 130 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 131 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 132 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 133 \r
 134 #ifdef __cplusplus\r
 135 }\r
 136 #endif\r
 137 \r
 138 #endif /* PORTMACRO_H */\r
 139 \r
 140 \r