git.sur5r.net Git - freertos/blob - FreeRTOS/Source/portable/GCC/H8S2329/portmacro.h

   1 /*\r
   2     FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd. \r
   3     All rights reserved\r
   4 \r
   5     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
   9      *    FreeRTOS provides completely free yet professionally developed,    *\r
  10      *    robust, strictly quality controlled, supported, and cross          *\r
  11      *    platform software that has become a de facto standard.             *\r
  12      *                                                                       *\r
  13      *    Help yourself get started quickly and support the FreeRTOS         *\r
  14      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  15      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  16      *                                                                       *\r
  17      *    Thank you!                                                         *\r
  18      *                                                                       *\r
  19     ***************************************************************************\r
  20 \r
  21     This file is part of the FreeRTOS distribution.\r
  22 \r
  23     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  24     the terms of the GNU General Public License (version 2) as published by the\r
  25     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  26 \r
  27     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
  28     >>! a combined work that includes FreeRTOS without being obliged to provide\r
  29     >>! the source code for proprietary components outside of the FreeRTOS\r
  30     >>! kernel.\r
  31 \r
  32     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  33     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  34     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  35     link: http://www.freertos.org/a00114.html\r
  36 \r
  37     1 tab == 4 spaces!\r
  38 \r
  39     ***************************************************************************\r
  40      *                                                                       *\r
  41      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  42      *    not run, what could be wrong?"                                     *\r
  43      *                                                                       *\r
  44      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  45      *                                                                       *\r
  46     ***************************************************************************\r
  47 \r
  48     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  49     license and Real Time Engineers Ltd. contact details.\r
  50 \r
  51     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  52     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  53     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  54 \r
  55     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  56     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  57     licenses offer ticketed support, indemnification and middleware.\r
  58 \r
  59     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  60     engineered and independently SIL3 certified version for use in safety and\r
  61     mission critical applications that require provable dependability.\r
  62 \r
  63     1 tab == 4 spaces!\r
  64 */\r
  65 \r
  66 \r
  67 #ifndef PORTMACRO_H\r
  68 #define PORTMACRO_H\r
  69 \r
  70 #ifdef __cplusplus\r
  71 extern "C" {\r
  72 #endif\r
  73 \r
  74 /*-----------------------------------------------------------\r
  75  * Port specific definitions.  \r
  76  *\r
  77  * The settings in this file configure FreeRTOS correctly for the\r
  78  * given hardware and compiler.\r
  79  *\r
  80  * These settings should not be altered.\r
  81  *-----------------------------------------------------------\r
  82  */\r
  83 \r
  84 /* Type definitions. */\r
  85 #define portCHAR                char\r
  86 #define portFLOAT               float\r
  87 #define portDOUBLE              double\r
  88 #define portLONG                long\r
  89 #define portSHORT               short\r
  90 #define portSTACK_TYPE  unsigned portCHAR\r
  91 #define portBASE_TYPE   char\r
  92 \r
  93 #if( configUSE_16_BIT_TICKS == 1 )\r
  94         typedef unsigned portSHORT portTickType;\r
  95         #define portMAX_DELAY ( portTickType ) 0xffff\r
  96 #else\r
  97         typedef unsigned portLONG portTickType;\r
  98         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  99 #endif\r
 100 /*-----------------------------------------------------------*/\r
 101 \r
 102 /* Hardware specifics. */\r
 103 #define portBYTE_ALIGNMENT                      2\r
 104 #define portSTACK_GROWTH                        ( -1 )\r
 105 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
 106 #define portYIELD()                                     asm volatile( "TRAPA #0" )\r
 107 #define portNOP()                                       asm volatile( "NOP" )\r
 108 /*-----------------------------------------------------------*/\r
 109 \r
 110 /* Critical section handling. */\r
 111 #define portENABLE_INTERRUPTS()         asm volatile( "ANDC     #0x7F, CCR" );\r
 112 #define portDISABLE_INTERRUPTS()        asm volatile( "ORC  #0x80, CCR" );\r
 113 \r
 114 /* Push the CCR then disable interrupts. */\r
 115 #define portENTER_CRITICAL()            asm volatile( "STC      CCR, @-ER7" ); \\r
 116                                         portDISABLE_INTERRUPTS();\r
 117 \r
 118 /* Pop the CCR to set the interrupt masking back to its previous state. */\r
 119 #define  portEXIT_CRITICAL()            asm volatile( "LDC  @ER7+, CCR" );\r
 120 /*-----------------------------------------------------------*/\r
 121 \r
 122 /* Task utilities. */\r
 123 \r
 124 /* Context switch macros.  These macros are very simple as the context \r
 125 is saved simply by selecting the saveall attribute of the context switch \r
 126 interrupt service routines.  These macros save and restore the stack\r
 127 pointer to the TCB. */\r
 128 \r
 129 #define portSAVE_STACK_POINTER()                                                                \\r
 130 extern void* pxCurrentTCB;                                                                              \\r
 131                                                                                                                                 \\r
 132         asm volatile(                                                                                           \\r
 133                                         "MOV.L  @_pxCurrentTCB, ER5                     \n\t"   \\r
 134                                         "MOV.L  ER7, @ER5                                       \n\t"   \\r
 135                                 );                                                                                              \\r
 136         ( void ) pxCurrentTCB;\r
 137 \r
 138 \r
 139 #define portRESTORE_STACK_POINTER()                                                             \\r
 140 extern void* pxCurrentTCB;                                                                              \\r
 141                                                                                                                                 \\r
 142         asm volatile(                                                                                           \\r
 143                                         "MOV.L  @_pxCurrentTCB, ER5                     \n\t"   \\r
 144                                         "MOV.L  @ER5, ER7                                       \n\t"   \\r
 145                                 );                                                                                              \\r
 146         ( void ) pxCurrentTCB;\r
 147 \r
 148 /*-----------------------------------------------------------*/\r
 149 \r
 150 /* Macros to allow a context switch from within an application ISR. */\r
 151 \r
 152 #define portENTER_SWITCHING_ISR() portSAVE_STACK_POINTER(); {\r
 153 \r
 154 #define portEXIT_SWITCHING_ISR( x )                                                     \\r
 155         if( x )                                                                                                 \\r
 156         {                                                                                                               \\r
 157                 extern void vTaskSwitchContext( void );                         \\r
 158                 vTaskSwitchContext();                                                           \\r
 159         }                                                                                                               \\r
 160         } portRESTORE_STACK_POINTER();\r
 161 /*-----------------------------------------------------------*/\r
 162 \r
 163 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 164 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 165 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 166 \r
 167 #ifdef __cplusplus\r
 168 }\r
 169 #endif\r
 170 \r
 171 #endif /* PORTMACRO_H */\r
 172 \r