X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcfg%2Fcompiler.h;h=0d401bcc42e27ba14997b4f1f8b73682050aad3b;hb=b9e1e52093d33494bf4a8ca27c14a56a25b6e0bc;hp=07f4f14118e024456a4ccb73a1095c7b26fcb72f;hpb=5c77344df12ac768e7b53e0085ad08de21513d2f;p=bertos.git

diff --git a/bertos/cfg/compiler.h b/bertos/cfg/compiler.h
index 07f4f141..0d401bcc 100644
--- a/bertos/cfg/compiler.h
+++ b/bertos/cfg/compiler.h
@@ -54,10 +54,14 @@
 	#pragma c99 on
 #endif
 
-#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
-	#define COMPILER_C99      1
-#else
-	#define COMPILER_C99      0
+#if defined(__STDC_VERSION__)
+    #if (__STDC_VERSION__ == 199409L) // IAR
+	    #define COMPILER_C99      1  // not true, because partial C99, avoid miscompilation
+    #elif (__STDC_VERSION__ >= 199901L) // GCC
+	    #define COMPILER_C99      1
+    #else
+	    #define COMPILER_C99      0
+    #endif
 #endif
 
 
@@ -80,26 +84,45 @@
 	#define COUNT_PARMS(...) \
 			COUNT_PARMS2(11 , ## __VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
 
-	#define FN_ARGS       ...
+	/**
+	 * 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)
 
-	#define FN_ARGS       args...
+	/**
+	 * 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
 
-	#if CPU_ARM
+	/* IAR iccarm specific functions */
+	#include <intrinsics.h>
+	#pragma diag_suppress=Pe940
+	#pragma inline = forced
+
+	#define MEMORY_BARRIER		asm("")
+
+	#if CPU_ARM || CPU_CM3
 
 		#define COMPILER_VARIADIC_MACROS 1
 
 		#define INTERRUPT(x)  __irq __arm void x (void)
 		#define INLINE        static inline
+		#define NAKED
 
 		/* Include some standard C89/C99 stuff */
 		#include <stddef.h>
@@ -198,6 +221,7 @@
 	#define RESTRICT                __restrict__
 	#define MUST_CHECK              __attribute__((warn_unused_result))
 	#define PACKED                  __attribute__((packed))
+	#define ALIGNED(x)              __attribute__ ((__aligned__(x)))
 	#if CPU_ARM | CPU_CM3
 		#define NAKED		__attribute__((naked))
 	#else
@@ -205,7 +229,7 @@
 	#endif
 
 	/**
-	 * Force compiler to realod context variable.
+	 * Force compiler to reload context variable.
 	 */
 	#define MEMORY_BARRIER           asm volatile ("" : : : "memory")
 
@@ -349,6 +373,9 @@
 #ifndef PACKED
 #define PACKED                 /* nothing */
 #endif
+#ifndef ALIGNED
+#define ALIGNED                /* nothing */
+#endif
 #ifndef MEMORY_BARRIER
 #define MEMORY_BARRIER         /* nothing */
 #warning No memory barrier defined for select compiler. If you use the kernel check it.
@@ -435,6 +462,9 @@
 	#endif
 #endif
 
+/** User defined callback type */
+typedef void (*Hook)(void *);
+
 /** Bulk storage large enough for both pointers or integers. */
 typedef void * iptr_t;
 
@@ -444,6 +474,14 @@ typedef const void * const_iptr_t;
 typedef unsigned char sigbit_t;  /**< Type for signal bits. */
 typedef unsigned char sigmask_t; /**< Type for signal masks. */
 
+/**
+ * Signal structure
+ */
+typedef struct Signal
+{
+	sigmask_t    wait;    /**< Signals the process is waiting for */
+	sigmask_t    recv;    /**< Received signals */
+} Signal;
 
 /**
  * \name Standard type definitions.
@@ -475,8 +513,8 @@ typedef unsigned char sigmask_t; /**< Type for signal masks. */
 		typedef long ssize_t;
 	#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
@@ -520,7 +558,22 @@ typedef unsigned char sigmask_t; /**< Type for signal masks. */
 	 *
 	 * \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)) +		\
+				STATIC_ASSERT_EXPR(			\
+					!__builtin_types_compatible_p(	\
+						typeof(a), typeof(&a[0]))))
+	#else
+		#define countof(a)  (sizeof(a) / sizeof(*(a)))
+	#endif
 #endif
 #ifndef alignof
 	/**
@@ -554,6 +607,13 @@ typedef unsigned char sigmask_t; /**< Type for signal masks. */
 #define STATIC_ASSERT(condition)  \
 	UNUSED_VAR(extern char, STATIC_ASSERTION_FAILED__[(condition) ? 1 : -1])
 
+/**
+ * Issue a compilation error if \a __cond is false (this can be used inside an
+ * expression).
+ */
+#define STATIC_ASSERT_EXPR(__cond) \
+	(sizeof(struct { int STATIC_ASSERTION_FAILED__:!!(__cond); }) * 0)
+
 #ifndef ASSERT_TYPE_EQUAL
 	/** Ensure two variables have the same type. */
 	#define ASSERT_TYPE_EQUAL(var1, var2)  \
@@ -566,4 +626,15 @@ typedef unsigned char sigmask_t; /**< Type for signal masks. */
 			do { (void)(&(var) == (type *)0); } while(0)
 #endif
 
+/**
+ * Prevent the compiler from optimizing access to the variable \a x, enforcing
+ * a refetch from memory. This also forbid from reordering successing instances
+ * of ACCESS_SAFE().
+ */
+#ifdef __ICCARM__
+#define ACCESS_SAFE(x) x
+#else
+#define ACCESS_SAFE(x) (*(volatile typeof(x) *)&(x))
+#endif
+
 #endif /* BERTOS_COMPILER_H */