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CortexM3/OS_Target_cpp.cpp@7:6fab7e5aa489, 2010-11-11 (annotated)

Committer:: segundo
Date:: Thu Nov 11 10:30:39 2010 +0000
Revision:: 7:6fab7e5aa489
Parent:: 0:d7810ff946c1

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User	Revision	Line number	New contents of line
segundo	0:d7810ff946c1	1	//******************************************************************************
segundo	0:d7810ff946c1	2	//*
segundo	0:d7810ff946c1	3	//* FULLNAME: Single-Chip Microcontroller Real-Time Operating System
segundo	0:d7810ff946c1	4	//*
segundo	0:d7810ff946c1	5	//* NICKNAME: scmRTOS
segundo	0:d7810ff946c1	6	//*
segundo	0:d7810ff946c1	7	//* PROCESSOR: ARM Cortex-M3
segundo	0:d7810ff946c1	8	//*
segundo	0:d7810ff946c1	9	//* TOOLKIT: EWARM (IAR Systems)
segundo	0:d7810ff946c1	10	//*
segundo	0:d7810ff946c1	11	//* PURPOSE: Target Dependent Stuff Source
segundo	0:d7810ff946c1	12	//*
segundo	0:d7810ff946c1	13	//* Version: 3.10
segundo	0:d7810ff946c1	14	//*
segundo	0:d7810ff946c1	15	//* $Revision: 195 $
segundo	0:d7810ff946c1	16	//* $Date:: 2008-06-19 #$
segundo	0:d7810ff946c1	17	//*
segundo	0:d7810ff946c1	18	//* Copyright (c) 2003-2010, Harry E. Zhurov
segundo	0:d7810ff946c1	19	//*
segundo	0:d7810ff946c1	20	//* Permission is hereby granted, free of charge, to any person
segundo	0:d7810ff946c1	21	//* obtaining a copy of this software and associated documentation
segundo	0:d7810ff946c1	22	//* files (the "Software"), to deal in the Software without restriction,
segundo	0:d7810ff946c1	23	//* including without limitation the rights to use, copy, modify, merge,
segundo	0:d7810ff946c1	24	//* publish, distribute, sublicense, and/or sell copies of the Software,
segundo	0:d7810ff946c1	25	//* and to permit persons to whom the Software is furnished to do so,
segundo	0:d7810ff946c1	26	//* subject to the following conditions:
segundo	0:d7810ff946c1	27	//*
segundo	0:d7810ff946c1	28	//* The above copyright notice and this permission notice shall be included
segundo	0:d7810ff946c1	29	//* in all copies or substantial portions of the Software.
segundo	0:d7810ff946c1	30	//*
segundo	0:d7810ff946c1	31	//* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
segundo	0:d7810ff946c1	32	//* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
segundo	0:d7810ff946c1	33	//* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
segundo	0:d7810ff946c1	34	//* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
segundo	0:d7810ff946c1	35	//* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
segundo	0:d7810ff946c1	36	//* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
segundo	0:d7810ff946c1	37	//* THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
segundo	0:d7810ff946c1	38	//*
segundo	0:d7810ff946c1	39	//* =================================================================
segundo	0:d7810ff946c1	40	//* See http://scmrtos.sourceforge.net for documentation, latest
segundo	0:d7810ff946c1	41	//* information, license and contact details.
segundo	0:d7810ff946c1	42	//* =================================================================
segundo	0:d7810ff946c1	43	//*
segundo	0:d7810ff946c1	44	//******************************************************************************
segundo	0:d7810ff946c1	45	//* Ported by Andrey Chuikin, Copyright (c) 2008-2010
segundo	0:d7810ff946c1	46
segundo	0:d7810ff946c1	47
segundo	0:d7810ff946c1	48	#include <scmRTOS.h>
segundo	0:d7810ff946c1	49
segundo	0:d7810ff946c1	50	using namespace OS;
segundo	0:d7810ff946c1	51
segundo	0:d7810ff946c1	52	//------------------------------------------------------------------------------
segundo	0:d7810ff946c1	53	//
segundo	0:d7810ff946c1	54	// OS Process's constructor
segundo	0:d7810ff946c1	55	//
segundo	0:d7810ff946c1	56	// Performs:
segundo	0:d7810ff946c1	57	// * initializing process data;
segundo	0:d7810ff946c1	58	// * registering of the process in kernel;
segundo	0:d7810ff946c1	59	// * preparing stack frame;
segundo	0:d7810ff946c1	60	//
segundo	0:d7810ff946c1	61	//
segundo	0:d7810ff946c1	62	TBaseProcess::TBaseProcess(TStackItem* Stack, word stackSize, TPriority pr, void (*exec)())
segundo	0:d7810ff946c1	63	: StackPointer(Stack)
segundo	0:d7810ff946c1	64	, StackSize(stackSize)
segundo	0:d7810ff946c1	65	, Timeout(0)
segundo	0:d7810ff946c1	66	, Priority(pr)
segundo	0:d7810ff946c1	67	{
segundo	0:d7810ff946c1	68	Kernel.RegisterProcess(this);
segundo	0:d7810ff946c1	69	#ifdef DEBUG_STACK
segundo	0:d7810ff946c1	70	// Fill stack area with some value to be able later to define stack usage
segundo	0:d7810ff946c1	71	for (StackPointer-=(StackSize/sizeof(TStackItem)); StackPointer < Stack; *(StackPointer++) = STACK_FILL_CONST);
segundo	0:d7810ff946c1	72	#endif //DEBUG_STACK
segundo	0:d7810ff946c1	73
segundo	0:d7810ff946c1	74	//---------------------------------------------------------------
segundo	0:d7810ff946c1	75	//
segundo	0:d7810ff946c1	76	// Prepare Process Stack Frame
segundo	0:d7810ff946c1	77	//
segundo	0:d7810ff946c1	78	*(--StackPointer) = 0x01000000L; // xPSR
segundo	0:d7810ff946c1	79	*(--StackPointer) = reinterpret_cast<dword>(exec); // Entry Point
segundo	0:d7810ff946c1	80	StackPointer -= 14; // emulate "push R14,R12,R3,R2,R1,R0,R11-R4"
segundo	0:d7810ff946c1	81
segundo	0:d7810ff946c1	82	// The code below can be used for debug purpose. In this case comment
segundo	0:d7810ff946c1	83	// line above and uncomment block below.
segundo	0:d7810ff946c1	84	/*
segundo	0:d7810ff946c1	85	*(--StackPointer) = 0xFFFFFFFEL; // R14 (LR) (init value will cause fault if ever used)
segundo	0:d7810ff946c1	86	*(--StackPointer) = 0x12121212L; // R12
segundo	0:d7810ff946c1	87	*(--StackPointer) = 0x03030303L; // R3
segundo	0:d7810ff946c1	88	*(--StackPointer) = 0x02020202L; // R2
segundo	0:d7810ff946c1	89	*(--StackPointer) = 0x01010101L; // R1
segundo	0:d7810ff946c1	90	*(--StackPointer) = 0x00000000L; // R0
segundo	0:d7810ff946c1	91
segundo	0:d7810ff946c1	92	// Remaining registers saved on process stack
segundo	0:d7810ff946c1	93	*(--StackPointer) = 0x11111111L; // R11
segundo	0:d7810ff946c1	94	*(--StackPointer) = 0x10101010L; // R10
segundo	0:d7810ff946c1	95	*(--StackPointer) = 0x09090909L; // R9
segundo	0:d7810ff946c1	96	*(--StackPointer) = 0x08080808L; // R8
segundo	0:d7810ff946c1	97	*(--StackPointer) = 0x07070707L; // R7
segundo	0:d7810ff946c1	98	*(--StackPointer) = 0x06060606L; // R6
segundo	0:d7810ff946c1	99	*(--StackPointer) = 0x05050505L; // R5
segundo	0:d7810ff946c1	100	*(--StackPointer) = 0x04040404L; // R4
segundo	0:d7810ff946c1	101	*/
segundo	0:d7810ff946c1	102	}
segundo	0:d7810ff946c1	103	//------------------------------------------------------------------------------
segundo	0:d7810ff946c1	104	//
segundo	0:d7810ff946c1	105	// Idle Process
segundo	0:d7810ff946c1	106	//
segundo	0:d7810ff946c1	107	typedef process<prIDLE, scmRTOS_IDLE_PROCESS_STACK_SIZE> TIdleProcess;
segundo	0:d7810ff946c1	108
segundo	0:d7810ff946c1	109	TIdleProcess IdleProcess;
segundo	0:d7810ff946c1	110
segundo	0:d7810ff946c1	111	template<> OS_PROCESS void TIdleProcess::Exec()
segundo	0:d7810ff946c1	112	{
segundo	0:d7810ff946c1	113	for(;;)
segundo	0:d7810ff946c1	114	{
segundo	0:d7810ff946c1	115	#if scmRTOS_IDLE_HOOK_ENABLE == 1
segundo	0:d7810ff946c1	116	IdleProcessUserHook();
segundo	0:d7810ff946c1	117	#endif
segundo	0:d7810ff946c1	118	}
segundo	0:d7810ff946c1	119	}
segundo	0:d7810ff946c1	120	//------------------------------------------------------------------------------
segundo	0:d7810ff946c1	121	OS_INTERRUPT void OS::SysTick_Handler()
segundo	0:d7810ff946c1	122	{
segundo	0:d7810ff946c1	123	scmRTOS_ISRW_TYPE ISR;
segundo	0:d7810ff946c1	124
segundo	0:d7810ff946c1	125	Kernel.SystemTimer();
segundo	0:d7810ff946c1	126
segundo	0:d7810ff946c1	127	#if scmRTOS_SYSTIMER_NEST_INTS_ENABLE == 0
segundo	0:d7810ff946c1	128	DISABLE_NESTED_INTERRUPTS();
segundo	0:d7810ff946c1	129	#endif
segundo	0:d7810ff946c1	130
segundo	0:d7810ff946c1	131	#if scmRTOS_SYSTIMER_HOOK_ENABLE == 1
segundo	0:d7810ff946c1	132	SystemTimerUserHook();
segundo	0:d7810ff946c1	133	#endif
segundo	0:d7810ff946c1	134	}
segundo	0:d7810ff946c1	135	//------------------------------------------------------------------------------
segundo	0:d7810ff946c1	136

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Type:	Library
Created:	11 Nov 2010
Imports:	8
Forks:	0
Commits:	8
Dependents:	0
Dependencies:	0
Followers:	1

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CortexM3/OS_Target_cpp.cpp@7:6fab7e5aa489, 2010-11-11 (annotated)

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