git.sur5r.net Git - freertos/blob - Source/portable/GCC/CORTUS_APS3/portmacro.h

   1 /*
   2     FreeRTOS V6.0.4 - Copyright (C) 2010 Real Time Engineers Ltd.
   3
   4     ***************************************************************************
   5     *                                                                         *
   6     * If you are:                                                             *
   7     *                                                                         *
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  10     *    + Looking for basic training,                                        *
  11     *    + Wanting to improve your FreeRTOS skills and productivity           *
  12     *                                                                         *
  13     * then take a look at the FreeRTOS eBook                                  *
  14     *                                                                         *
  15     *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
  16     *                  http://www.FreeRTOS.org/Documentation                  *
  17     *                                                                         *
  18     * A pdf reference manual is also available.  Both are usually delivered   *
  19     * to your inbox within 20 minutes to two hours when purchased between 8am *
  20     * and 8pm GMT (although please allow up to 24 hours in case of            *
  21     * exceptional circumstances).  Thank you for your support!                *
  22     *                                                                         *
  23     ***************************************************************************
  24
  25     This file is part of the FreeRTOS distribution.
  26
  27     FreeRTOS is free software; you can redistribute it and/or modify it under
  28     the terms of the GNU General Public License (version 2) as published by the
  29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
  30     ***NOTE*** The exception to the GPL is included to allow you to distribute
  31     a combined work that includes FreeRTOS without being obliged to provide the
  32     source code for proprietary components outside of the FreeRTOS kernel.
  33     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
  34     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  35     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  36     more details. You should have received a copy of the GNU General Public
  37     License and the FreeRTOS license exception along with FreeRTOS; if not it
  38     can be viewed here: http://www.freertos.org/a00114.html and also obtained
  39     by writing to Richard Barry, contact details for whom are available on the
  40     FreeRTOS WEB site.
  41
  42     1 tab == 4 spaces!
  43
  44     http://www.FreeRTOS.org - Documentation, latest information, license and
  45     contact details.
  46
  47     http://www.SafeRTOS.com - A version that is certified for use in safety
  48     critical systems.
  49
  50     http://www.OpenRTOS.com - Commercial support, development, porting,
  51     licensing and training services.
  52 */
  53
  54 #ifndef PORTMACRO_H
  55 #define PORTMACRO_H
  56
  57 #ifdef __cplusplus
  58 extern "C" {
  59 #endif
  60
  61 #include <machine/ic.h>
  62
  63 /*-----------------------------------------------------------
  64  * Port specific definitions.
  65  *
  66  * The settings in this file configure FreeRTOS correctly for the
  67  * given hardware and compiler.
  68  *
  69  * These settings should not be altered.
  70  *-----------------------------------------------------------
  71  */
  72
  73 /* Type definitions. */
  74 #define portCHAR                char
  75 #define portFLOAT               float
  76 #define portDOUBLE              double
  77 #define portLONG                long
  78 #define portSHORT               short
  79 #define portSTACK_TYPE  unsigned portLONG
  80 #define portBASE_TYPE   portLONG
  81
  82 #if( configUSE_16_BIT_TICKS == 1 )
  83         typedef unsigned portSHORT portTickType;
  84         #define portMAX_DELAY ( portTickType ) 0xffff
  85 #else
  86         typedef unsigned portLONG portTickType;
  87         #define portMAX_DELAY ( portTickType ) 0xffffffff
  88 #endif
  89 /*-----------------------------------------------------------*/
  90
  91 /* Architecture specifics. */
  92 #define portSTACK_GROWTH                                                        ( -1 )
  93 #define portTICK_RATE_MS                                                        ( ( portTickType ) 1000 / configTICK_RATE_HZ )
  94 #define portBYTE_ALIGNMENT                                                      4
  95 #define portNOP()                                                                       __asm__ volatile ( "mov r0,r0; nop" )
  96 #define portCRITICAL_NESTING_IN_TCB                                     1
  97 #define portIRQ_TRAP_YIELD                                                      31
  98 #define portKERNEL_INTERRUPT_PRIORITY_LEVEL                     0
  99 #define portSYSTEM_INTERRUPT_PRIORITY_LEVEL                     0
 100 /*-----------------------------------------------------------*/
 101
 102 /* Task utilities. */
 103
 104 extern void vPortYield( void );
 105
 106 /*---------------------------------------------------------------------------*/
 107
 108 #define portYIELD()             asm __volatile__( " trap #%0 "::"i"(portIRQ_TRAP_YIELD):"memory")
 109 /*---------------------------------------------------------------------------*/
 110
 111 extern void vTaskEnterCritical( void );
 112 extern void vTaskExitCritical( void );
 113 #define portENTER_CRITICAL()            vTaskEnterCritical()
 114 #define portEXIT_CRITICAL()                     vTaskExitCritical()
 115 /*---------------------------------------------------------------------------*/
 116
 117 /* Critical section management. */
 118 #define portDISABLE_INTERRUPTS() ic->cpl = ( portSYSTEM_INTERRUPT_PRIORITY_LEVEL + 1 )
 119 #define portENABLE_INTERRUPTS() ic->cpl = portKERNEL_INTERRUPT_PRIORITY_LEVEL
 120
 121 /*---------------------------------------------------------------------------*/
 122
 123 #define portYIELD_FROM_ISR() vTaskSwitchContext()
 124
 125 /*---------------------------------------------------------------------------*/
 126
 127 #define portSAVE_CONTEXT()                              \
 128         asm __volatile__(                                               \
 129                 "sub    r1, #0x1c                               \n"     /* Make space on the stack. */  \
 130                 "stq    r8, [r1]                                \n"     /* Store the remaining context registers. */    \
 131                 "std    r12, [r1]+0x10                  \n"     \
 132                 "movhi  r2, #16384                              \n"     /* Set the pointer to the IC. */        \
 133                 "ldub   r3, [r2]+2                              \n"     /* Load the current interrupt mask. */  \
 134                 "st             r3, [r1]+0x18                   \n"     /* Store the interrupt mask on the stack. */ \
 135                 "ld             r2, [r0]+short(pxCurrentTCB)    \n"     /* Load the pointer to the TCB. */      \
 136                 "st             r1, [r2]                                \n"     /* Save the stack pointer into the TCB. */      \
 137                 "mov    r14, r1                                 \n"     /* Compiler expects r14 to be set to the function stack. */     \
 138                 :::"r2","r3","r4","r5","r15"    );      /* Clobber list includes all of the caller saved registers so that they are saved as part of the Interrupt handler pre-amble. */
 139 /*---------------------------------------------------------------------------*/
 140
 141 #define portRESTORE_CONTEXT()           \
 142         asm __volatile__(                                               \
 143                 "ld             r2, [r0]+short(pxCurrentTCB)    \n"     /* Load the TCB to find the stack pointer and context. */       \
 144                 "ld             r1, [r2]                                \n"     \
 145                 "movhi  r2, #16384                              \n"     /* Set the pointer to the IC. */        \
 146                 "ld             r3, [r1]+0x18                   \n"     /* Load the previous interrupt mask. */ \
 147                 "stb    r3, [r2]+2                      \n"     /* Set the current interrupt mask to be the previous. */        \
 148                 "ldd    r12, [r1]+0x10                  \n"     /* Restore the callee saved registers. Caller saved registers are restored by the function exit. */     \
 149                 "ldq    r8, [r1]                                \n"     \
 150                 "add    r1, #0x1c                               \n"     \
 151                 "mov    r14, r1                                 \n"     \
 152                 );
 153
 154 /*---------------------------------------------------------------------------*/
 155
 156 /* Task function macros as described on the FreeRTOS.org WEB site. */
 157 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 158 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 159 /*---------------------------------------------------------------------------*/
 160
 161 #ifdef __cplusplus
 162 }
 163 #endif
 164
 165 #endif /* PORTMACRO_H */