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

   1 /*\r
   2  * FreeRTOS Kernel V10.0.0\r
   3  * Copyright (C) 2017 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. If you wish to use our Amazon\r
  14  * FreeRTOS name, please do so in a fair use way that does not cause confusion.\r
  15  *\r
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
  18  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
  19  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
  20  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  22  *\r
  23  * http://www.FreeRTOS.org\r
  24  * http://aws.amazon.com/freertos\r
  25  *\r
  26  * 1 tab == 4 spaces!\r
  27  */\r
  28 \r
  29 \r
  30 #ifndef PORTMACRO_H\r
  31 #define PORTMACRO_H\r
  32 \r
  33 #ifdef __cplusplus\r
  34 extern "C" {\r
  35 #endif\r
  36 \r
  37 /*-----------------------------------------------------------\r
  38  * Port specific definitions.\r
  39  *\r
  40  * The settings in this file configure FreeRTOS correctly for the\r
  41  * given hardware and compiler.\r
  42  *\r
  43  * These settings should not be altered.\r
  44  *-----------------------------------------------------------\r
  45  */\r
  46 \r
  47 /* Type definitions. */\r
  48 #define portCHAR                char\r
  49 #define portFLOAT               float\r
  50 #define portDOUBLE              double\r
  51 #define portLONG                long\r
  52 #define portSHORT               short\r
  53 #define portSTACK_TYPE  uint32_t\r
  54 #define portBASE_TYPE   long\r
  55 \r
  56 typedef portSTACK_TYPE StackType_t;\r
  57 typedef long BaseType_t;\r
  58 typedef unsigned long UBaseType_t;\r
  59 \r
  60 #if( configUSE_16_BIT_TICKS == 1 )\r
  61         typedef uint16_t TickType_t;\r
  62         #define portMAX_DELAY ( TickType_t ) 0xffff\r
  63 #else\r
  64         typedef uint32_t TickType_t;\r
  65         #define portMAX_DELAY ( TickType_t ) 0xffffffffUL\r
  66 #endif\r
  67 /*-----------------------------------------------------------*/\r
  68 \r
  69 /* Hardware specifics. */\r
  70 #define portSTACK_GROWTH                        ( -1 )\r
  71 #define portTICK_PERIOD_MS                      ( ( TickType_t ) 1000 / configTICK_RATE_HZ )\r
  72 #define portBYTE_ALIGNMENT                      8\r
  73 #define portYIELD()                                     asm volatile ( "SWI 0" )\r
  74 #define portNOP()                                       asm volatile ( "NOP" )\r
  75 /*-----------------------------------------------------------*/\r
  76 \r
  77 /* Critical section handling. */\r
  78 /*\r
  79  * The interrupt management utilities can only be called from ARM mode.  When\r
  80  * THUMB_INTERWORK is defined the utilities are defined as functions in\r
  81  * portISR.c to ensure a switch to ARM mode.  When THUMB_INTERWORK is not\r
  82  * defined then the utilities are defined as macros here - as per other ports.\r
  83  */\r
  84 \r
  85 #ifdef THUMB_INTERWORK\r
  86 \r
  87         extern void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));\r
  88         extern void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));\r
  89 \r
  90         #define portDISABLE_INTERRUPTS()        vPortDisableInterruptsFromThumb()\r
  91         #define portENABLE_INTERRUPTS()         vPortEnableInterruptsFromThumb()\r
  92 \r
  93 #else\r
  94 \r
  95         #define portDISABLE_INTERRUPTS()                                                                                        \\r
  96                 asm volatile (                                                                                                                  \\r
  97                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
  98                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
  99                         "ORR    R0, R0, #0xC0   \n\t"   /* Disable IRQ, FIQ.                    */      \\r
 100                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 101                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 102 \r
 103         #define portENABLE_INTERRUPTS()                                                                                         \\r
 104                 asm volatile (                                                                                                                  \\r
 105                         "STMDB  SP!, {R0}               \n\t"   /* Push R0.                                             */      \\r
 106                         "MRS    R0, CPSR                \n\t"   /* Get CPSR.                                    */      \\r
 107                         "BIC    R0, R0, #0xC0   \n\t"   /* Enable IRQ, FIQ.                             */      \\r
 108                         "MSR    CPSR, R0                \n\t"   /* Write back modified value.   */      \\r
 109                         "LDMIA  SP!, {R0}                       " )     /* Pop R0.                                              */\r
 110 \r
 111 #endif /* THUMB_INTERWORK */\r
 112 \r
 113 extern void vPortEnterCritical( void );\r
 114 extern void vPortExitCritical( void );\r
 115 \r
 116 #define portENTER_CRITICAL()            vPortEnterCritical();\r
 117 #define portEXIT_CRITICAL()                     vPortExitCritical();\r
 118 /*-----------------------------------------------------------*/\r
 119 \r
 120 /* Task utilities. */\r
 121 #define portEND_SWITCHING_ISR( xSwitchRequired )        \\r
 122 {                                                                                                       \\r
 123 extern void vTaskSwitchContext( void );                         \\r
 124                                                                                                         \\r
 125         if( xSwitchRequired )                                                   \\r
 126         {                                                                                               \\r
 127                 vTaskSwitchContext();                                           \\r
 128         }                                                                                               \\r
 129 }\r
 130 /*-----------------------------------------------------------*/\r
 131 \r
 132 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 133 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 134 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )\r
 135 \r
 136 #ifdef __cplusplus\r
 137 }\r
 138 #endif\r
 139 \r
 140 #endif /* PORTMACRO_H */\r
 141 \r
 142 \r