Doc fixes.

[bertos.git] / cfg / compiler.h

diff --git a/cfg/compiler.h b/cfg/compiler.h
index 96745521fe864280d5f9db85879db290a4bd3e5a..a303dc776115cc0ab9640d4eb208bfe366c950ad 100644 (file)
--- a/cfg/compiler.h
+++ b/cfg/compiler.h
@@ -37,8 +37,8 @@
  * \author Bernardo Innocenti <bernie@develer.com>
  */
 
-#ifndef DEVLIB_COMPILER_H
-#define DEVLIB_COMPILER_H
+#ifndef BERTOS_COMPILER_H
+#define BERTOS_COMPILER_H
 
 #include <cpu/detect.h>
 
@@ -181,6 +181,11 @@
        #define RESTRICT                __restrict__
        #define MUST_CHECK              __attribute__((warn_unused_result))
        #define PACKED                  __attribute__((packed))
+       /**
+        * Force compiler to realod context variable.
+        */
+       #define MEMORY_BARRIER           asm volatile ("" : : : "memory")
+
        #if GNUC_PREREQ(3,1)
                #define DEPRECATED  __attribute__((__deprecated__))
        #endif
@@ -211,6 +216,8 @@
                #pragma GCC poison cin cout cerr clog
        #endif
 
+
+
 #elif defined(__MWERKS__)
 
        /* Compiler features */
@@ -313,6 +320,10 @@
 #ifndef PACKED
 #define PACKED                 /* nothing */
 #endif
+#ifndef MEMORY_BARRIER
+#define MEMORY_BARRIER         /* nothing */
+#warning No memory barrier defined for select compiler. If you use the kernel check it.
+#endif
 
 
 /* Misc definitions */
@@ -323,7 +334,6 @@
 #define        EOF   (-1)
 #endif
 
-
 /* Support for hybrid C/C++ applications. */
 #ifdef __cplusplus
        #define EXTERN_C        extern "C"
@@ -515,4 +525,4 @@ typedef unsigned char page_t;    /**< Type for banked memory pages. */
                        do { (void)(&(var) == (type *)0); } while(0)
 #endif
 
-#endif /* DEVLIB_COMPILER_H */
+#endif /* BERTOS_COMPILER_H */