1 files changed, 76 insertions, 0 deletions
diff --git a/shared/macro.h b/shared/macro.h
new file mode 100644
index 0000000..b59f7dc
--- /dev/null
+++ b/shared/macro.h
@@ -0,0 +1,76 @@
+/*
+ * kmod - interface to kernel module operations
+ *
+ * Copyright (C) 2011-2013  ProFUSION embedded systems
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <stddef.h>
+
+#if defined(HAVE_STATIC_ASSERT)
+#define assert_cc(expr) \
+	_Static_assert((expr), #expr)
+#else
+#define assert_cc(expr) \
+       do { (void) sizeof(char [1 - 2*!(expr)]); } while(0)
+#endif
+
+#define check_types_match(expr1, expr2)		\
+	((typeof(expr1) *)0 != (typeof(expr2) *)0)
+
+#define container_of(member_ptr, containing_type, member)		\
+	((containing_type *)						\
+	 ((char *)(member_ptr) - offsetof(containing_type, member))	\
+	 - check_types_match(*(member_ptr), ((containing_type *)0)->member))
+
+
+/* Two gcc extensions.
+ * &a[0] degrades to a pointer: a different type from an array */
+#define _array_size_chk(arr) ({ \
+	assert_cc(!__builtin_types_compatible_p(typeof(arr), typeof(&(arr)[0]))); \
+	0; \
+	})
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + _array_size_chk(arr))
+
+#define XSTRINGIFY(x) #x
+#define STRINGIFY(x) XSTRINGIFY(x)
+
+#define XCONCATENATE(x, y) x ## y
+#define CONCATENATE(x, y) XCONCATENATE(x, y)
+#define UNIQ(x) CONCATENATE(x, __COUNTER__)
+
+/* Temporaries for importing index handling */
+#define NOFAIL(x) (x)
+#define fatal(x...) do { } while (0)
+
+/* Attributes */
+
+#define _must_check_ __attribute__((warn_unused_result))
+#define _printf_format_(a,b) __attribute__((format (printf, a, b)))
+#define _unused_ __attribute__((unused))
+#define _always_inline_ __inline__ __attribute__((always_inline))
+#define _cleanup_(x) __attribute__((cleanup(x)))
+
+/* Define C11 noreturn without <stdnoreturn.h> and even on older gcc
+ * compiler versions */
+#ifndef noreturn
+#if defined(HAVE_NORETURN)
+#define noreturn _Noreturn
+#else
+#define noreturn __attribute__((noreturn))
+#endif
+#endif