utils: move endian swap helpers and __packed definition to utils.h

[project/libubox.git] / utils.h

diff --git a/utils.h b/utils.h
index d1a6cd3..383a521 100644 (file)
--- a/utils.h
+++ b/utils.h
@@ -20,6 +20,8 @@
 #define __LIBUBOX_UTILS_H
 
 #include <sys/types.h>
 #define __LIBUBOX_UTILS_H
 
 #include <sys/types.h>

+#include <sys/time.h>
+#include <time.h>

 
 /*
  * calloc_a(size_t len, [void **addr, size_t len,...], NULL)
 
 /*
  * calloc_a(size_t len, [void **addr, size_t len,...], NULL)


@@ -38,4 +40,85 @@ void *__calloc_a(size_t len, ...);
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 #endif
 
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 #endif
 

+#define __BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+
+#ifdef __OPTIMIZE__
+extern int __BUILD_BUG_ON_CONDITION_FAILED;
+#define BUILD_BUG_ON(condition)                                        \
+       do {                                                    \
+               __BUILD_BUG_ON(condition);                      \
+               if (condition)                                  \
+                       __BUILD_BUG_ON_CONDITION_FAILED = 1;    \
+       } while(0)
+#else
+#define BUILD_BUG_ON __BUILD_BUG_ON
+#endif
+
+#ifdef __APPLE__
+
+#define CLOCK_REALTIME 0
+#define CLOCK_MONOTONIC        1
+
+void clock_gettime(int type, struct timespec *tv);
+
+#endif
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#include <byteswap.h>
+#include <endian.h>
+
+#elif defined(__APPLE__)
+#include <machine/endian.h>
+#include <machine/byte_order.h>
+#define bswap_16(x) OSSwapInt16(x)
+#define bswap_32(x) OSSwapInt32(x)
+#define bswap_64(x) OSSwapInt64(x)
+#elif defined(__FreeBSD__)
+#include <sys/endian.h>
+#define bswap_16(x) bswap16(x)
+#define bswap_32(x) bswap32(x)
+#define bswap_64(x) bswap64(x)
+#else
+#include <machine/endian.h>
+#define bswap_16(x) swap16(x)
+#define bswap_32(x) swap32(x)
+#define bswap_64(x) swap64(x)
+#endif
+
+#ifndef __BYTE_ORDER
+#define __BYTE_ORDER BYTE_ORDER
+#endif
+#ifndef __BIG_ENDIAN
+#define __BIG_ENDIAN BIG_ENDIAN
+#endif
+#ifndef __LITTLE_ENDIAN
+#define __LITTLE_ENDIAN LITTLE_ENDIAN
+#endif
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+
+#define cpu_to_be64(x) bswap_64(x)
+#define cpu_to_be32(x) bswap_32(x)
+#define cpu_to_be16(x) bswap_16(x)
+
+#define be64_to_cpu(x) bswap_64(x)
+#define be32_to_cpu(x) bswap_32(x)
+#define be16_to_cpu(x) bswap_16(x)
+
+#else
+
+#define cpu_to_be64(x) (x)
+#define cpu_to_be32(x) (x)
+#define cpu_to_be16(x) (x)
+
+#define be64_to_cpu(x) (x)
+#define be32_to_cpu(x) (x)
+#define be16_to_cpu(x) (x)
+
+#endif
+
+#ifndef __packed
+#define __packed __attribute__((packed))
+#endif
+

 #endif
 #endif