X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/d2851b335106293e5f95107226b5deeed712a69c..aae20139b90521cf1d1b17fdcb3ff9d42ecdf937:/LUFA/Common/Atomic.h

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