X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=cpu.h;h=562d8619aa3800134c56cbfb4249a39ebb51ad7e;hb=018b68ae17c81e82f8a1991f518c08107657bc9b;hp=4b762449c9adc67a295d5fcb8aef9b03f0aff382;hpb=6cbc8596a105e183d9f805a6deb4fae224e9baac;p=bertos.git

diff --git a/cpu.h b/cpu.h
index 4b762449..562d8619 100755
--- a/cpu.h
+++ b/cpu.h
@@ -17,6 +17,9 @@
 
 /*#*
  *#* $Log$
+ *#* Revision 1.17  2004/09/06 21:48:27  bernie
+ *#* ATOMIC(): New macro.
+ *#*
  *#* Revision 1.16  2004/08/29 21:58:33  bernie
  *#* Rename BITS_PER_XYZ macros; Add sanity checks.
  *#*
@@ -154,6 +157,19 @@
 
 #endif
 
+/*!
+ * Execute \a CODE atomically with respect to interrupts.
+ *
+ * \see ENABLE_IRQSAVE DISABLE_IRQRESTORE
+ */
+#define ATOMIC(CODE) \
+	do { \
+		cpuflags_t __flags; \
+		DISABLE_IRQSAVE(__flags); \
+		CODE; \
+		ENABLE_IRQRESTORE(__flags); \
+	} while (0)
+
 
 //! Default for macro not defined in the right arch section
 #ifndef CPU_REG_INIT_VALUE