sys: Add sys/cdefs.h

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/sys/inc/sys/cdefs.h b/sys/inc/sys/cdefs.h
new file mode 100644
index 0000000..c4294d4
--- /dev/null
+++ b/sys/inc/sys/cdefs.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Hyra nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPKERNE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LKERNS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * PKERNSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SYS_CDEFS_H_
+#define _SYS_CDEFS_H_ 1
+
+#define __weak          __attribute__((__weak__))
+#define __strong        __attribute__((__strong__))
+#define __always_inline __attribute__((__always_inline__))
+#define __packed        __attribute__((__packed__))
+#define __dead          __attribute__((__noreturn__))
+#define __cold          __attribute__((__cold__))
+#define __dead_cold     __attribute__((__noreturn__, __cold__))
+#define __aligned(n)    __attribute__((__aligned__((n))))
+#define __unused        __attribute__((__unused__))
+#define __used          __attribute__((__used__))
+#define __nothing       ((void)0)
+#define __likely(exp)   __builtin_expect(((exp) != 0), 1)
+#define __unlikely(exp) __builtin_expect(((exp) != 0), 0)
+#define __static_assert _Static_assert
+
+#endif  /* !_SYS_CDEFS_H_ */