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90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
/**
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* @file
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* @brief QF/C port to Cortex-R, dual-mode QXK kernel, IAR-ARM toolset
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* @cond
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******************************************************************************
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* Last Updated for Version: 5.7.1
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* Date of the Last Update: 2016-09-22
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*
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* Q u a n t u m L e a P s
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* ---------------------------
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* innovating embedded systems
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*
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* Copyright (C) 2002-2016 Quantum Leaps, LLC. All rights reserved.
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*
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* This program is open source software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alternatively, this program may be distributed and modified under the
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* terms of Quantum Leaps commercial licenses, which expressly supersede
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* the GNU General Public License and are specifically designed for
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* licensees interested in retaining the proprietary status of their code.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Contact information:
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* https://state-machine.com
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* mailto:info@state-machine.com
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******************************************************************************
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* @endcond
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*/
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#ifndef qf_port_h
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#define qf_port_h
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/* The maximum number of active objects in the application, see NOTE1 */
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#define QF_MAX_ACTIVE 32
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/* The maximum number of system clock tick rates */
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#define QF_MAX_TICK_RATE 2
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/* QF interrupt disable/enable, see NOTE2 */
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#define QF_INT_DISABLE() __disable_irq()
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#define QF_INT_ENABLE() __enable_irq()
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#define QF_INT_ENABLE_ALL() __enable_interrupt()
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/* Cortex-R provide the CLZ instruction for fast LOG2 */
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#define QF_LOG2(n_) ((uint8_t)(32U - __CLZ(n_)))
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/* QF critical section entry/exit, see NOTE3 */
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#define QF_CRIT_STAT_TYPE uint32_t
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#define QF_CRIT_ENTRY(status_) do { \
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(status_) = __get_CPSR(); \
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QF_INT_DISABLE(); \
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} while (0)
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#define QF_CRIT_EXIT(status_) __set_CPSR((status_))
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#define QF_CRIT_EXIT_NOP() __ISB()
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#include <intrinsics.h> /* IAR intrinsic functions */
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#include "qep_port.h" /* QEP port */
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#include "qxk_port.h" /* QXK port */
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#include "qf.h" /* QF platform-independent public interface */
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#include "qxthread.h" /* QXK extended thread interface */
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/*****************************************************************************
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* NOTE1:
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* The maximum number of active objects QF_MAX_ACTIVE can be increased
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* up to 63, if necessary. Here it is set to a lower level to save some RAM.
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*
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* NOTE2:
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* The FIQ-type interrupts are NEVER disabled in this port, so the FIQ is
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* a "kernel-unaware" interrupt. If the FIQ is ever used in the application,
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* it must be an "__arm __fiq"-type function. For this to work, the FIQ
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* stack needs to be initialized.
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*
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* NOTE3:
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* This port implements the "save and restore" interrupt status policy,
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* which again never disables the FIQ-type interrupts. This policy allows
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* for nesting critical sections, which is necessary inside IRQ-type
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* interrupts that run with interrupts (IRQ) disabled.
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*/
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#endif /* qf_port_h */
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