X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Fattr.h;h=832f0618698c724945f7196dfaf97e30cf790404;hb=32d1445272120a254d77ce8d1af1f527da7a2c17;hp=c6d8373484d300c7f3c6deded36c9ff993da9629;hpb=fe0a14d1434098bfd0780d06a2a7e55f27940d27;p=bertos.git

diff --git a/bertos/cpu/attr.h b/bertos/cpu/attr.h
index c6d83734..832f0618 100644
--- a/bertos/cpu/attr.h
+++ b/bertos/cpu/attr.h
@@ -42,6 +42,7 @@
 
 #include "detect.h"
 
+#include "cfg/cfg_proc.h"      /* CONFIG_KERN_PREEMPT */
 #include "cfg/cfg_attr.h"      /* CONFIG_FAST_MEM */
 
 
@@ -94,6 +95,8 @@
 
 	#ifdef __GNUC__
 		#define NOP         asm volatile ("nop")
+		/* This is a good thing to insert into busy-wait loops. */
+		#define PAUSE       asm volatile ("rep; nop" ::: "memory")
 		#define BREAKPOINT  asm volatile ("int3" ::)
 	#endif
 
@@ -153,11 +156,6 @@
 			#define FAST_FUNC /**/
 		#endif
 
-		/**
-		 * Function attribute to declare an interrupt service routine.
-		 */
-		#define ISR_FUNC __attribute__((interrupt))
-
 		/*
 		 * Function attribute to move it into ram memory.
 		 */
@@ -239,4 +237,9 @@
 	#define FAST_RODATA /* */
 #endif
 
+#ifndef PAUSE
+	/// Generic PAUSE implementation.
+	#define PAUSE	{NOP; MEMORY_BARRIER;}
+#endif
+
 #endif /* CPU_ATTR_H */