X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcfg%2Fcompiler.h;h=e8a76ab1af9e3fddb5af5bf8a753ab00fb670315;hb=da99e878a65f6ab84e51bdf4c9029c3906431b03;hp=7357f43f69789bdb380192795a18e5fc59121c6e;hpb=0eeba5822b3ff0e76ae0fd0272536d371d272d7d;p=bertos.git

diff --git a/bertos/cfg/compiler.h b/bertos/cfg/compiler.h
index 7357f43f..e8a76ab1 100644
--- a/bertos/cfg/compiler.h
+++ b/bertos/cfg/compiler.h
@@ -33,7 +33,6 @@
  *
  * \brief Additional support macros for compiler independance
  *
- * \version $Id$
  * \author Bernie Innocenti <bernie@codewiz.org>
  */
 
@@ -74,6 +73,34 @@
 #define PP_STRINGIZE__(x)   #x
 
 
+/**
+ */
+#if COMPILER_C99
+	#define COUNT_PARMS2(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _, ...) _
+	#define COUNT_PARMS(...) \
+			COUNT_PARMS2(11 , ## __VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
+
+	/**
+	 * usage:
+	 * \code
+	 * #define foo_init(...) PP_CAT(foo_init_, COUNT_PARMS(__VA_ARGS__)) (__VA_ARGS__)
+	 * \endcode
+	 */
+
+#else
+	#define COUNT_PARMS2(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _, ...) _
+	#define COUNT_PARMS(args...) \
+			COUNT_PARMS2(11 , ## args, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
+
+	/**
+	 * usage:
+	 * \code
+	 * #define foo_init(args...) PP_CAT(foo_init_, COUNT_PARMS(args)) (args)
+	 * \endcode
+	 */
+
+#endif
+
 #if defined(__IAR_SYSTEMS_ICC) || defined(__IAR_SYSTEMS_ICC__)
 
 	#pragma language=extended
@@ -172,6 +199,7 @@
 	#define UNUSED_VAR(type,name)	__attribute__((__unused__)) type name
 	#define USED_VAR(type,name)     __attribute__((__used__)) type name
 	#define INLINE                  static inline __attribute__((__always_inline__))
+	#define NOINLINE                __attribute__((noinline))
 	#define LIKELY(x)               __builtin_expect(!!(x), 1)
 	#define UNLIKELY(x)             __builtin_expect(!!(x), 0)
 	#define PURE_FUNC               __attribute__((pure))
@@ -181,6 +209,12 @@
 	#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 +224,10 @@
 		#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)))
@@ -271,6 +309,9 @@
 #ifndef INLINE
 #define INLINE                 static inline
 #endif
+#ifndef NOINLINE
+#define NOINLINE               /* nothing */
+#endif
 #ifndef NORETURN
 #define NORETURN               /* nothing */
 #endif
@@ -323,6 +364,9 @@
 #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 */
@@ -410,7 +454,6 @@ typedef const void * const_iptr_t;
 
 typedef unsigned char sigbit_t;  /**< Type for signal bits. */
 typedef unsigned char sigmask_t; /**< Type for signal masks. */
-typedef unsigned char page_t;    /**< Type for banked memory pages. */
 
 
 /**
@@ -441,10 +484,10 @@ 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). */
+	#elif CPU_AVR || CPU_MSP430
+		/* 16bit (missing in avr-/msp430-libc's sys/types.h). */
 		typedef int ssize_t;
 	#else
 		#error Unknown CPU
@@ -488,7 +531,32 @@ typedef unsigned char page_t;    /**< Type for banked memory pages. */
 	 *
 	 * \note This macro is non-standard, but implements a very common idiom
 	 */
-	#define countof(a)  (sizeof(a) / sizeof(*(a)))
+	#if defined(__GNUC__) && !defined(__cplusplus)
+		/*
+		 * Perform a compile time type checking: countof() can only
+		 * work with static arrays, so throw a compile time error if a
+		 * pointer is passed as argument.
+		 *
+		 * NOTE: the construct __builtin_types_compatible_p() is only
+		 * available for C.
+		 */
+		#define countof(a) (sizeof(a) / sizeof(*(a)) + \
+			sizeof(typeof(int[1 - 2 * \
+				!!__builtin_types_compatible_p(typeof(a), \
+						typeof(&a[0]))])) * 0)
+	#else
+		#define countof(a)  (sizeof(a) / sizeof(*(a)))
+	#endif
+#endif
+#ifndef alignof
+	/**
+	 * Return the alignment in memory of a generic data type.
+	 *
+	 * \note We need to worry about alignment when allocating memory that
+	 * will be used later by unknown objects (e.g., malloc()) or, more
+	 * generally, whenever creating generic container types.
+	 */
+	#define alignof(type) offsetof(struct { char c; type member; }, member)
 #endif
 
 /**
@@ -500,12 +568,12 @@ typedef unsigned char page_t;    /**< Type for banked memory pages. */
  */
 #if COMPILER_TYPEOF && COMPILER_STATEMENT_EXPRESSIONS
 	#define containerof(ptr, type, member) ({ \
-		const typeof( ((type *)0)->member ) *_mptr = (ptr); /* type check */ \
-		(type *)((char *)_mptr - offsetof(type, member)); \
+		typeof( ((type *)0)->member ) *_mptr = (ptr); /* type check */ \
+		(type *)(void *)((char *)_mptr - offsetof(type, member)); \
 	})
 #else
 	#define containerof(ptr, type, member) \
-		( (type *)((char *)(ptr) - offsetof(type, member)) )
+		( (type *)(void *)((char *)(ptr) - offsetof(type, member)) )
 #endif
 
 /** Issue a compilation error if the \a condition is false */