X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcfg%2Fcompiler.h;h=4d0c33be9a11a6eac62421476db70d5887712b9a;hb=caa730dbc7128c09b5a5b883aa2ad97fe23e799d;hp=5cacf1dca66fe20041b8e2fa0aa5133b66aad3d0;hpb=07e34b5dabbe1609ff848b2137ccbbff33619144;p=bertos.git

diff --git a/bertos/cfg/compiler.h b/bertos/cfg/compiler.h
index 5cacf1dc..4d0c33be 100644
--- a/bertos/cfg/compiler.h
+++ b/bertos/cfg/compiler.h
@@ -181,6 +181,12 @@
 	#define RESTRICT                __restrict__
 	#define MUST_CHECK              __attribute__((warn_unused_result))
 	#define PACKED                  __attribute__((packed))
+	#if CPU_ARM | CPU_CM3
+		#define NAKED		__attribute__((naked))
+	#else
+		#define NAKED
+	#endif
+
 	/**
 	 * Force compiler to realod context variable.
 	 */
@@ -190,6 +196,10 @@
 		#define DEPRECATED  __attribute__((__deprecated__))
 	#endif
 
+	#if GNUC_PREREQ(4,5)
+		#define UNREACHABLE() __builtin_unreachable()
+	#endif
+
 	#ifndef __cplusplus
 		#define ASSERT_TYPE_EQUAL(var1, var2) \
 			STATIC_ASSERT(__builtin_types_compatible_p(typeof(var1), typeof(var2)))
@@ -323,6 +333,9 @@
 #define MEMORY_BARRIER         /* nothing */
 #warning No memory barrier defined for select compiler. If you use the kernel check it.
 #endif
+#ifndef UNREACHABLE
+#define UNREACHABLE() for (;;)
+#endif
 
 
 /* Misc definitions */
@@ -441,7 +454,7 @@ typedef unsigned char page_t;    /**< Type for banked memory pages. */
 	#if CPU_X86
 		/* 32bit or 64bit (32bit for _WIN64). */
 		typedef long ssize_t;
-	#elif CPU_ARM
+	#elif CPU_ARM || CPU_CM3
 		typedef int ssize_t;
 	#elif CPU_AVR
 		/* 16bit (missing in avr-libc's sys/types.h). */