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

   1 /*\r
   2         FreeRTOS.org V4.5.0 - Copyright (C) 2003-2007 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         See http://www.FreeRTOS.org for documentation, latest information, license \r
  28         and contact details.  Please ensure to read the configuration and relevant \r
  29         port sections of the online documentation.\r
  30 \r
  31         Also see http://www.SafeRTOS.com for an IEC 61508 compliant version along\r
  32         with commercial development and support options.\r
  33         ***************************************************************************\r
  34 */\r
  35 \r
  36 \r
  37 #ifndef PORTMACRO_H\r
  38 #define PORTMACRO_H\r
  39 \r
  40 /*-----------------------------------------------------------\r
  41  * Port specific definitions.  \r
  42  *\r
  43  * The settings in this file configure FreeRTOS correctly for the\r
  44  * given hardware and compiler.\r
  45  *\r
  46  * These settings should not be altered.\r
  47  *-----------------------------------------------------------\r
  48  */\r
  49 \r
  50 /* Type definitions. */\r
  51 #define portCHAR                char\r
  52 #define portFLOAT               float\r
  53 #define portDOUBLE              double\r
  54 #define portLONG                long\r
  55 #define portSHORT               short\r
  56 #define portSTACK_TYPE  unsigned portCHAR\r
  57 #define portBASE_TYPE   char\r
  58 \r
  59 #if( configUSE_16_BIT_TICKS == 1 )\r
  60         typedef unsigned portSHORT portTickType;\r
  61         #define portMAX_DELAY ( portTickType ) 0xffff\r
  62 #else\r
  63         typedef unsigned portLONG portTickType;\r
  64         #define portMAX_DELAY ( portTickType ) 0xffffffff\r
  65 #endif\r
  66 /*-----------------------------------------------------------*/\r
  67 \r
  68 /* Hardware specifics. */\r
  69 #define portBYTE_ALIGNMENT                      2\r
  70 #define portSTACK_GROWTH                        ( -1 )\r
  71 #define portTICK_RATE_MS                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )          \r
  72 #define portYIELD()                                     asm volatile( "TRAPA #0" )\r
  73 #define portNOP()                                       asm volatile( "NOP" )\r
  74 /*-----------------------------------------------------------*/\r
  75 \r
  76 /* Critical section handling. */\r
  77 #define portENABLE_INTERRUPTS()         asm volatile( "ANDC     #0x7F, CCR" );\r
  78 #define portDISABLE_INTERRUPTS()        asm volatile( "ORC  #0x80, CCR" );\r
  79 \r
  80 /* Push the CCR then disable interrupts. */\r
  81 #define portENTER_CRITICAL()            asm volatile( "STC      CCR, @-ER7" ); \\r
  82                                         portDISABLE_INTERRUPTS();\r
  83 \r
  84 /* Pop the CCR to set the interrupt masking back to its previous state. */\r
  85 #define  portEXIT_CRITICAL()            asm volatile( "LDC  @ER7+, CCR" );\r
  86 /*-----------------------------------------------------------*/\r
  87 \r
  88 /* Task utilities. */\r
  89 \r
  90 /* Context switch macros.  These macros are very simple as the context \r
  91 is saved simply by selecting the saveall attribute of the context switch \r
  92 interrupt service routines.  These macros save and restore the stack\r
  93 pointer to the TCB. */\r
  94 \r
  95 #define portSAVE_STACK_POINTER()                                                                \\r
  96 extern void* pxCurrentTCB;                                                                              \\r
  97                                                                                                                                 \\r
  98         asm volatile(                                                                                           \\r
  99                                         "MOV.L  @_pxCurrentTCB, ER5                     \n\t"   \\r
 100                                         "MOV.L  ER7, @ER5                                       \n\t"   \\r
 101                                 );                                                                                              \\r
 102         ( void ) pxCurrentTCB;\r
 103 \r
 104 \r
 105 #define portRESTORE_STACK_POINTER()                                                             \\r
 106 extern void* pxCurrentTCB;                                                                              \\r
 107                                                                                                                                 \\r
 108         asm volatile(                                                                                           \\r
 109                                         "MOV.L  @_pxCurrentTCB, ER5                     \n\t"   \\r
 110                                         "MOV.L  @ER5, ER7                                       \n\t"   \\r
 111                                 );                                                                                              \\r
 112         ( void ) pxCurrentTCB;\r
 113 \r
 114 /*-----------------------------------------------------------*/\r
 115 \r
 116 /* Macros to allow a context switch from within an application ISR. */\r
 117 \r
 118 #define portENTER_SWITCHING_ISR() portSAVE_STACK_POINTER(); {\r
 119 \r
 120 #define portEXIT_SWITCHING_ISR( x )                                                     \\r
 121         if( x )                                                                                                 \\r
 122         {                                                                                                               \\r
 123                 extern void vTaskSwitchContext( void );                         \\r
 124                 vTaskSwitchContext();                                                           \\r
 125         }                                                                                                               \\r
 126         } portRESTORE_STACK_POINTER();\r
 127 /*-----------------------------------------------------------*/\r
 128 \r
 129 /* Task function macros as described on the FreeRTOS.org WEB site. */\r
 130 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 131 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )\r
 132 \r
 133 #endif /* PORTMACRO_H */\r
 134 \r