Add drivers for the EVK1101 - begin full port to the AVR32 UC3B line of AVRs.

[pub/lufa.git] / LUFA / Common / Atomic.h

diff --git a/LUFA/Common/Atomic.h b/LUFA/Common/Atomic.h
new file mode 100644 (file)
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--- /dev/null
+++ b/LUFA/Common/Atomic.h
@@ -0,0 +1,99 @@
+/*\r
+             LUFA Library\r
+     Copyright (C) Dean Camera, 2010.\r
+\r
+  dean [at] fourwalledcubicle [dot] com\r
+      www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+  Permission to use, copy, modify, distribute, and sell this\r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in\r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting\r
+  documentation, and that the name of the author not be used in\r
+  advertising or publicity pertaining to distribution of the\r
+  software without specific, written prior permission.\r
+\r
+  The author disclaim all warranties with regard to this\r
+  software, including all implied warranties of merchantability\r
+  and fitness.  In no event shall the author be liable for any\r
+  special, indirect or consequential damages or any damages\r
+  whatsoever resulting from loss of use, data or profits, whether\r
+  in an action of contract, negligence or other tortious action,\r
+  arising out of or in connection with the use or performance of\r
+  this software.\r
+*/\r
+\r
+/** \file\r
+ *\r
+ *  Atomic block header for the 32-bit AVRs, modelled on the 8-bit AVR's util/atomic.h\r
+ *  header.\r
+ *\r
+ *  \note Do not include this file directly, rather include the Common.h header file instead to gain this file's\r
+ *        functionality on the 32-bit AVRs.\r
+ */\r
+\r
+#ifndef __ATOMIC_H__\r
+#define __ATOMIC_H__\r
+\r
+       /* Includes: */\r
+               #include <avr32/io.h>\r
+               #include <stdint.h>\r
+               #include <stdbool.h>\r
+\r
+       /* Public Interface - May be used in end-application: */\r
+               /* Macros: */\r
+                       #define ATOMIC_BLOCK(type) for ( type, __ToDo = __iCliRetVal(); \\r
+                                                                          __ToDo ; __ToDo = 0 )\r
+                       #define NONATOMIC_BLOCK(type) for ( type, __ToDo = __iSeiRetVal(); \\r
+                                                                                 __ToDo ;  __ToDo = 0 )\r
+                       #define ATOMIC_RESTORESTATE uint8_t sreg_save \\r
+                               __attribute__((__cleanup__(__iRestore))) = 0 /* TODO */\r
+                       #define ATOMIC_FORCEON uint8_t sreg_save \\r
+                               __attribute__((__cleanup__(__iSeiParam))) = 0\r
+                       #define NONATOMIC_RESTORESTATE uint8_t sreg_save \\r
+                               __attribute__((__cleanup__(__iRestore))) = 0 /* TODO */\r
+                       #define NONATOMIC_FORCEOFF uint8_t sreg_save \\r
+                               __attribute__((__cleanup__(__iCliParam))) = 0\r
+\r
+       /* Private Interface - For use in library only: */\r
+       #if !defined(__DOXYGEN__)\r
+               /* Inline Functions: */\r
+                       static __inline__ uint8_t __iSeiRetVal(void)\r
+                       {\r
+                               ((avr32_sr_t*)AVR32_SR_T)->gm = true;\r
+                               return 1;\r
+                       }\r
+\r
+                       static __inline__ uint8_t __iCliRetVal(void)\r
+                       {\r
+                               ((avr32_sr_t*)AVR32_SR_T)->gm = false;\r
+                               return 1;\r
+                       }\r
+\r
+                       static __inline__ void __iSeiParam(const uint8_t *__s)\r
+                       {\r
+                               ((avr32_sr_t*)AVR32_SR_T)->gm = true;\r
+                               __asm__ volatile ("" ::: "memory");\r
+                               (void)__s;\r
+                       }\r
+\r
+                       static __inline__ void __iCliParam(const uint8_t *__s)\r
+                       {\r
+                               ((avr32_sr_t*)AVR32_SR_T)->gm = false;\r
+                               __asm__ volatile ("" ::: "memory");\r
+                               (void)__s;\r
+                       }\r
+\r
+                       static __inline__ void __iRestore(const uint8_t *__s)\r
+                       {\r
+                               ((avr32_sr_t*)AVR32_SR_T)->gm = *__s;\r
+                               __asm__ volatile ("" ::: "memory");\r
+                       }\r
+       #endif\r
+\r
+#endif\r