4059be7918
Change the sprintf() in prvGenerateRunTimeStatsForTasksInList() to accept unsigned long instead of unsigned int parameters so it works on 16bit devices too.
173 lines
6.0 KiB
NASM
173 lines
6.0 KiB
NASM
;
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; FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
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;
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; ***************************************************************************
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; * *
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; * If you are: *
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; * *
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; * + New to FreeRTOS, *
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; * + Wanting to learn FreeRTOS or multitasking in general quickly *
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; * + Looking for basic training, *
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; * + Wanting to improve your FreeRTOS skills and productivity *
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; * *
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; * then take a look at the FreeRTOS books - available as PDF or paperback *
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; * *
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; * "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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; * http://www.FreeRTOS.org/Documentation *
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; * *
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; * A pdf reference manual is also available. Both are usually delivered *
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; * to your inbox within 20 minutes to two hours when purchased between 8am *
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; * and 8pm GMT (although please allow up to 24 hours in case of *
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; * exceptional circumstances). Thank you for your support! *
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; * *
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; ***************************************************************************
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;
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; This file is part of the FreeRTOS distribution.
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;
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; FreeRTOS is free software; you can redistribute it and/or modify it under
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; the terms of the GNU General Public License (version 2) as published by the
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; Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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; ***NOTE*** The exception to the GPL is included to allow you to distribute
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; a combined work that includes FreeRTOS without being obliged to provide the
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; source code for proprietary components outside of the FreeRTOS kernel.
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; FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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; more details. You should have received a copy of the GNU General Public
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; License and the FreeRTOS license exception along with FreeRTOS; if not it
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; can be viewed here: http://www.freertos.org/a00114.html and also obtained
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; by writing to Richard Barry, contact details for whom are available on the
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; FreeRTOS WEB site.
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;
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; 1 tab == 4 spaces!
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;
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; http://www.FreeRTOS.org - Documentation, latest information, license and
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; contact details.
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;
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; http://www.SafeRTOS.com - A version that is certified for use in safety
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; critical systems.
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;
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; http://www.OpenRTOS.com - Commercial support, development, porting,
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; licensing and training services.
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; * The definition of the "register test" tasks, as described at the top of
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; * main.c
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.global vTaskIncrementTick
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.global vTaskSwitchContext
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.global vPortSetupTimerInterrupt
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.global pxCurrentTCB
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.global usCriticalNesting
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.def vPortPreemptiveTickISR
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.def vPortCooperativeTickISR
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.def vPortYield
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.def xPortStartScheduler
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;-----------------------------------------------------------
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portSAVE_CONTEXT .macro
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;Save the remaining registers.
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pushm.a #12, r15
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movx.w &usCriticalNesting, r14
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pushx.a r14
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movx.a &pxCurrentTCB, r12
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movx.a sp, 0( r12 )
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.endm
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;-----------------------------------------------------------
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portRESTORE_CONTEXT .macro
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movx.a &pxCurrentTCB, r12
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movx.a @r12, sp
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popx.a r15
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movx.w r15, &usCriticalNesting
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popm.a #12, r15
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;The last thing on the stack will be the status register.
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;Ensure the power down bits are clear ready for the next
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;time this power down register is popped from the stack.
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bic.w #0xf0, 0( sp )
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pop.w sr
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reta
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.endm
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;-----------------------------------------------------------
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;*
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;* The RTOS tick ISR.
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;*
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;* If the cooperative scheduler is in use this simply increments the tick
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;* count.
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;*
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;* If the preemptive scheduler is in use a context switch can also occur.
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;*/
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.text
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vPortPreemptiveTickISR:
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; The sr is not saved in portSAVE_CONTEXT() because vPortYield() needs
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;to save it manually before it gets modified (interrupts get disabled).
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push.w sr
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portSAVE_CONTEXT
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calla #vTaskIncrementTick
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calla #vTaskSwitchContext
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portRESTORE_CONTEXT
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;-----------------------------------------------------------
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vPortCooperativeTickISR:
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; The sr is not saved in portSAVE_CONTEXT() because vPortYield() needs
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;to save it manually before it gets modified (interrupts get disabled).
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push.w sr
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portSAVE_CONTEXT
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calla #vTaskIncrementTick
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portRESTORE_CONTEXT
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;-----------------------------------------------------------
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;*
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;* Manual context switch called by the portYIELD() macro.
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;*/
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vPortYield:
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; The sr needs saving before it is modified.
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push.w sr
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; Now the SR is stacked we can disable interrupts.
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dint
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nop
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; Save the context of the current task.
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portSAVE_CONTEXT
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; Select the next task to run.
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calla #vTaskSwitchContext
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; Restore the context of the new task.
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portRESTORE_CONTEXT
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;-----------------------------------------------------------
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;*
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;* Start off the scheduler by initialising the RTOS tick timer, then restoring
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;* the context of the first task.
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;*
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xPortStartScheduler:
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; Setup the hardware to generate the tick. Interrupts are disabled
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; when this function is called.
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calla #vPortSetupTimerInterrupt
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; Restore the context of the first task that is going to run.
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portRESTORE_CONTEXT
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;-----------------------------------------------------------
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.end
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