begriffs open source - freertos/blob - portable/GCC/H8S2329/portmacro.h

   1 /*
   2  * FreeRTOS Kernel V10.4.3
   3  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy of
   6  * this software and associated documentation files (the "Software"), to deal in
   7  * the Software without restriction, including without limitation the rights to
   8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
   9  * the Software, and to permit persons to whom the Software is furnished to do so,
  10  * subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in all
  13  * copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
  17  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
  18  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * https://www.FreeRTOS.org
  23  * https://github.com/FreeRTOS
  24  *
  25  * 1 tab == 4 spaces!
  26  */
  27
  28
  29 #ifndef PORTMACRO_H
  30 #define PORTMACRO_H
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /*-----------------------------------------------------------
  37  * Port specific definitions.
  38  *
  39  * The settings in this file configure FreeRTOS correctly for the
  40  * given hardware and compiler.
  41  *
  42  * These settings should not be altered.
  43  *-----------------------------------------------------------
  44  */
  45
  46 /* Type definitions. */
  47 #define portCHAR                char
  48 #define portFLOAT               float
  49 #define portDOUBLE              double
  50 #define portLONG                long
  51 #define portSHORT               short
  52 #define portSTACK_TYPE  uint8_t
  53 #define portBASE_TYPE   char
  54
  55 typedef portSTACK_TYPE StackType_t;
  56 typedef signed char BaseType_t;
  57 typedef unsigned char UBaseType_t;
  58
  59 #if( configUSE_16_BIT_TICKS == 1 )
  60         typedef uint16_t TickType_t;
  61         #define portMAX_DELAY ( TickType_t ) 0xffff
  62 #else
  63         typedef uint32_t TickType_t;
  64         #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
  65 #endif
  66 /*-----------------------------------------------------------*/
  67
  68 /* Hardware specifics. */
  69 #define portBYTE_ALIGNMENT                      2
  70 #define portSTACK_GROWTH                        ( -1 )
  71 #define portTICK_PERIOD_MS                      ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
  72 #define portYIELD()                                     asm volatile( "TRAPA #0" )
  73 #define portNOP()                                       asm volatile( "NOP" )
  74 /*-----------------------------------------------------------*/
  75
  76 /* Critical section handling. */
  77 #define portENABLE_INTERRUPTS()         asm volatile( "ANDC     #0x7F, CCR" );
  78 #define portDISABLE_INTERRUPTS()        asm volatile( "ORC  #0x80, CCR" );
  79
  80 /* Push the CCR then disable interrupts. */
  81 #define portENTER_CRITICAL()            asm volatile( "STC      CCR, @-ER7" ); \
  82                                         portDISABLE_INTERRUPTS();
  83
  84 /* Pop the CCR to set the interrupt masking back to its previous state. */
  85 #define  portEXIT_CRITICAL()            asm volatile( "LDC  @ER7+, CCR" );
  86 /*-----------------------------------------------------------*/
  87
  88 /* Task utilities. */
  89
  90 /* Context switch macros.  These macros are very simple as the context
  91 is saved simply by selecting the saveall attribute of the context switch
  92 interrupt service routines.  These macros save and restore the stack
  93 pointer to the TCB. */
  94
  95 #define portSAVE_STACK_POINTER()                                                                \
  96 extern void* pxCurrentTCB;                                                                              \
  97                                                                                                                                 \
  98         asm volatile(                                                                                           \
  99                                         "MOV.L  @_pxCurrentTCB, ER5                     \n\t"   \
 100                                         "MOV.L  ER7, @ER5                                       \n\t"   \
 101                                 );                                                                                              \
 102         ( void ) pxCurrentTCB;
 103
 104
 105 #define portRESTORE_STACK_POINTER()                                                             \
 106 extern void* pxCurrentTCB;                                                                              \
 107                                                                                                                                 \
 108         asm volatile(                                                                                           \
 109                                         "MOV.L  @_pxCurrentTCB, ER5                     \n\t"   \
 110                                         "MOV.L  @ER5, ER7                                       \n\t"   \
 111                                 );                                                                                              \
 112         ( void ) pxCurrentTCB;
 113
 114 /*-----------------------------------------------------------*/
 115
 116 /* Macros to allow a context switch from within an application ISR. */
 117
 118 #define portENTER_SWITCHING_ISR() portSAVE_STACK_POINTER(); {
 119
 120 #define portEXIT_SWITCHING_ISR( x )                                                     \
 121         if( x )                                                                                                 \
 122         {                                                                                                               \
 123                 extern void vTaskSwitchContext( void );                         \
 124                 vTaskSwitchContext();                                                           \
 125         }                                                                                                               \
 126         } portRESTORE_STACK_POINTER();
 127 /*-----------------------------------------------------------*/
 128
 129 /* Task function macros as described on the FreeRTOS.org WEB site. */
 130 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 131 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 132
 133 #ifdef __cplusplus
 134 }
 135 #endif
 136
 137 #endif /* PORTMACRO_H */
 138