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100 lines
3.2 KiB
100 lines
3.2 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2010.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Atomic block header for the 32-bit AVRs, modelled on the 8-bit AVR's util/atomic.h
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* header.
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*
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* \note Do not include this file directly, rather include the Common.h header file instead to gain this file's
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* functionality on the 32-bit AVRs.
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*/
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#ifndef __ATOMIC_H__
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#define __ATOMIC_H__
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/* Includes: */
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#include <avr32/io.h>
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#include <stdint.h>
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#include <stdbool.h>
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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#define ATOMIC_BLOCK(type) for ( type, __ToDo = __iCliRetVal(); \
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__ToDo ; __ToDo = 0 )
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#define NONATOMIC_BLOCK(type) for ( type, __ToDo = __iSeiRetVal(); \
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__ToDo ; __ToDo = 0 )
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#define ATOMIC_RESTORESTATE uint8_t sreg_save \
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__attribute__((__cleanup__(__iRestore))) = 0 /* TODO */
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#define ATOMIC_FORCEON uint8_t sreg_save \
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__attribute__((__cleanup__(__iSeiParam))) = 0
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#define NONATOMIC_RESTORESTATE uint8_t sreg_save \
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__attribute__((__cleanup__(__iRestore))) = 0 /* TODO */
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#define NONATOMIC_FORCEOFF uint8_t sreg_save \
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__attribute__((__cleanup__(__iCliParam))) = 0
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* Inline Functions: */
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static __inline__ uint8_t __iSeiRetVal(void)
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{
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((avr32_sr_t*)AVR32_SR_T)->gm = true;
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return 1;
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}
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static __inline__ uint8_t __iCliRetVal(void)
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{
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((avr32_sr_t*)AVR32_SR_T)->gm = false;
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return 1;
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}
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static __inline__ void __iSeiParam(const uint8_t *__s)
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{
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((avr32_sr_t*)AVR32_SR_T)->gm = true;
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__asm__ volatile ("" ::: "memory");
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(void)__s;
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}
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static __inline__ void __iCliParam(const uint8_t *__s)
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{
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((avr32_sr_t*)AVR32_SR_T)->gm = false;
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__asm__ volatile ("" ::: "memory");
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(void)__s;
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}
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static __inline__ void __iRestore(const uint8_t *__s)
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{
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((avr32_sr_t*)AVR32_SR_T)->gm = *__s;
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__asm__ volatile ("" ::: "memory");
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}
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#endif
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#endif
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