begriffs open source - freertos/blob - portable/GCC/CORTUS_APS3/portmacro.h

   1 /*
   2  * FreeRTOS SMP Kernel V202110.00
   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 #ifndef PORTMACRO_H
  29 #define PORTMACRO_H
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 #include <machine/cpu.h>
  36
  37 /*-----------------------------------------------------------
  38  * Port specific definitions.
  39  *
  40  * The settings in this file configure FreeRTOS correctly for the
  41  * given hardware and compiler.
  42  *
  43  * These settings should not be altered.
  44  *-----------------------------------------------------------
  45  */
  46
  47 /* Type definitions. */
  48 #define portCHAR                char
  49 #define portFLOAT               float
  50 #define portDOUBLE              double
  51 #define portLONG                long
  52 #define portSHORT               short
  53 #define portSTACK_TYPE  uint32_t
  54 #define portBASE_TYPE   long
  55
  56 typedef portSTACK_TYPE StackType_t;
  57 typedef long BaseType_t;
  58 typedef unsigned long UBaseType_t;
  59
  60 #if( configUSE_16_BIT_TICKS == 1 )
  61         typedef uint16_t TickType_t;
  62         #define portMAX_DELAY ( TickType_t ) 0xffff
  63 #else
  64         typedef uint32_t TickType_t;
  65         #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
  66 #endif
  67 /*-----------------------------------------------------------*/
  68
  69 /* Architecture specifics. */
  70 #define portSTACK_GROWTH                                                        ( -1 )
  71 #define portTICK_PERIOD_MS                                                      ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
  72 #define portBYTE_ALIGNMENT                                                      4
  73 #define portNOP()                                                                       __asm__ volatile ( "mov r0, r0" )
  74 #define portCRITICAL_NESTING_IN_TCB                                     1
  75 #define portIRQ_TRAP_YIELD                                                      31
  76 /*-----------------------------------------------------------*/
  77
  78 /* Task utilities. */
  79
  80 extern void vPortYield( void );
  81
  82 /*---------------------------------------------------------------------------*/
  83
  84 #define portYIELD()             asm __volatile__( " trap #%0 "::"i"(portIRQ_TRAP_YIELD):"memory")
  85 /*---------------------------------------------------------------------------*/
  86
  87 extern void vTaskEnterCritical( void );
  88 extern void vTaskExitCritical( void );
  89 #define portENTER_CRITICAL()            vTaskEnterCritical()
  90 #define portEXIT_CRITICAL()                     vTaskExitCritical()
  91 /*---------------------------------------------------------------------------*/
  92
  93 /* Critical section management. */
  94 #define portDISABLE_INTERRUPTS()        cpu_int_disable()
  95 #define portENABLE_INTERRUPTS()         cpu_int_enable()
  96
  97 /*---------------------------------------------------------------------------*/
  98
  99 #define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) if( xHigherPriorityTaskWoken != pdFALSE ) vTaskSwitchContext()
 100
 101 /*---------------------------------------------------------------------------*/
 102
 103 #define portSAVE_CONTEXT()                              \
 104         asm __volatile__                                                                                                                                                                                                \
 105         (                                                                                                                                                                                                                               \
 106                 "sub    r1, #68                                 \n" /* Make space on the stack for the context. */                                                      \
 107                 "std    r2, [r1] +      0                       \n"                                                                                                                                                     \
 108                 "stq    r4, [r1] +      8                       \n"                                                                                                                                                     \
 109                 "stq    r8, [r1] +      24                      \n"                                                                                                                                                     \
 110                 "stq    r12, [r1] +     40                      \n"                                                                                                                                                     \
 111                 "mov    r6, rtt                                 \n"                                                                                                                                                     \
 112                 "mov    r7, psr                                 \n"                                                                                                                                                     \
 113                 "std    r6, [r1] +      56                      \n"                                                                                                                                                     \
 114                 "movhi  r2, #16384                              \n"     /* Set the pointer to the IC. */                                                                                \
 115                 "ldub   r3, [r2] + 2                    \n"     /* Load the current interrupt mask. */                                                                  \
 116                 "st             r3, [r1]+ 64                    \n"     /* Store the interrupt mask on the stack. */                                                    \
 117                 "ld             r2, [r0]+short(pxCurrentTCB)    \n"     /* Load the pointer to the TCB. */                                                              \
 118                 "st             r1, [r2]                                \n"     /* Save the stack pointer into the TCB. */                                                              \
 119                 "mov    r14, r1                                 \n"     /* Compiler expects r14 to be set to the function stack. */                             \
 120         );
 121 /*---------------------------------------------------------------------------*/
 122
 123 #define portRESTORE_CONTEXT()                                                                                                                                                                           \
 124         asm __volatile__(                                                                                                                                                                                               \
 125                 "ld             r2, [r0]+short(pxCurrentTCB)    \n"     /* Load the TCB to find the stack pointer and context. */               \
 126                 "ld             r1, [r2]                                \n"                                                                                                                                                     \
 127                 "movhi  r2, #16384                              \n"     /* Set the pointer to the IC. */                                                                                \
 128                 "ld             r3, [r1] + 64                   \n"     /* Load the previous interrupt mask. */                                                                 \
 129                 "stb    r3, [r2] + 2                    \n"     /* Set the current interrupt mask to be the previous. */                                \
 130                 "ldd    r6, [r1] + 56                   \n"     /* Restore context. */                                                                                                  \
 131                 "mov    rtt, r6                                 \n"                                                                                                                                                     \
 132                 "mov    psr, r7                                 \n"                                                                                                                                                     \
 133                 "ldd    r2, [r1] + 0                    \n"                                                                                                                                                     \
 134                 "ldq    r4, [r1] +      8                       \n"                                                                                                                                                     \
 135                 "ldq    r8, [r1] +      24                      \n"                                                                                                                                                     \
 136                 "ldq    r12, [r1] +     40                      \n"                                                                                                                                                     \
 137                 "add    r1, #68                                 \n"                                                                                                                                                     \
 138                 "rti                                                    \n"                                                                                                                                                     \
 139          );
 140
 141 /*---------------------------------------------------------------------------*/
 142
 143 /* Task function macros as described on the FreeRTOS.org WEB site. */
 144 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 145 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 146 /*---------------------------------------------------------------------------*/
 147
 148 #ifdef __cplusplus
 149 }
 150 #endif
 151
 152 #endif /* PORTMACRO_H */