2 FreeRTOS V6.0.4 - Copyright (C) 2010 Real Time Engineers Ltd.
4 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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
44 http://www.FreeRTOS.org - Documentation, latest information, license and
47 http://www.SafeRTOS.com - A version that is certified for use in safety
50 http://www.OpenRTOS.com - Commercial support, development, porting,
51 licensing and training services.
61 #include <machine/ic.h>
63 /*-----------------------------------------------------------
64 * Port specific definitions.
66 * The settings in this file configure FreeRTOS correctly for the
67 * given hardware and compiler.
69 * These settings should not be altered.
70 *-----------------------------------------------------------
73 /* Type definitions. */
75 #define portFLOAT float
76 #define portDOUBLE double
78 #define portSHORT short
79 #define portSTACK_TYPE unsigned portLONG
80 #define portBASE_TYPE portLONG
82 #if( configUSE_16_BIT_TICKS == 1 )
83 typedef unsigned portSHORT portTickType;
84 #define portMAX_DELAY ( portTickType ) 0xffff
86 typedef unsigned portLONG portTickType;
87 #define portMAX_DELAY ( portTickType ) 0xffffffff
89 /*-----------------------------------------------------------*/
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" )
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 /*-----------------------------------------------------------*/
102 /* Task utilities. */
104 extern void vPortYield( void );
106 /*---------------------------------------------------------------------------*/
108 #define portYIELD() asm __volatile__( " trap #%0 "::"i"(portIRQ_TRAP_YIELD):"memory")
109 /*---------------------------------------------------------------------------*/
111 extern void vTaskEnterCritical( void );
112 extern void vTaskExitCritical( void );
113 #define portENTER_CRITICAL() vTaskEnterCritical()
114 #define portEXIT_CRITICAL() vTaskExitCritical()
115 /*---------------------------------------------------------------------------*/
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
121 /*---------------------------------------------------------------------------*/
123 #define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) if( xHigherPriorityTaskWoken != pdFALSE ) vTaskSwitchContext()
125 /*---------------------------------------------------------------------------*/
127 #define portSAVE_CONTEXT() \
130 "sub r1, #68 \n" /* Make space on the stack for the context. */ \
131 "std r2, [r1] + 0 \n" \
132 "stq r4, [r1] + 8 \n" \
133 "stq r8, [r1] + 24 \n" \
134 "stq r12, [r1] + 40 \n" \
137 "std r6, [r1] + 56 \n" \
138 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
139 "ldub r3, [r2] + 2 \n" /* Load the current interrupt mask. */ \
140 "st r3, [r1]+ 64 \n" /* Store the interrupt mask on the stack. */ \
141 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the pointer to the TCB. */ \
142 "st r1, [r2] \n" /* Save the stack pointer into the TCB. */ \
143 "mov r14, r1 \n" /* Compiler expects r14 to be set to the function stack. */ \
145 /*---------------------------------------------------------------------------*/
147 #define portRESTORE_CONTEXT() \
149 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the TCB to find the stack pointer and context. */ \
151 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
152 "ld r3, [r1] + 64 \n" /* Load the previous interrupt mask. */ \
153 "stb r3, [r2] + 2 \n" /* Set the current interrupt mask to be the previous. */ \
154 "ldd r6, [r1] + 56 \n" /* Restore context. */ \
157 "ldd r2, [r1] + 0 \n" \
158 "ldq r4, [r1] + 8 \n" \
159 "ldq r8, [r1] + 24 \n" \
160 "ldq r12, [r1] + 40 \n" \
165 /*---------------------------------------------------------------------------*/
167 /* Task function macros as described on the FreeRTOS.org WEB site. */
168 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
169 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
170 /*---------------------------------------------------------------------------*/
176 #endif /* PORTMACRO_H */