#define MAP_FILE 0x00
#define MAP_ANON 0x20
#define MAP_ANONYMOUS MAP_ANON
-#define MAP_32BIT 0x40
+#define MAP_NORESERVE 0x4000
+#define MAP_GROWSDOWN 0x0100
+#define MAP_DENYWRITE 0x0800
+#define MAP_EXECUTABLE 0x1000
+#define MAP_LOCKED 0x2000
#define POSIX_MADV_NORMAL 0
#define POSIX_MADV_RANDOM 1
#define MCL_CURRENT 1
#define MCL_FUTURE 2
-#ifdef _GNU_SOURCE
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define MADV_NORMAL 0
#define MADV_RANDOM 1
#define MADV_SEQUENTIAL 2