Initial Spring 2016 commit.

2015-12-23 00:50:04 +00:00
commit cafa9f5690
732 changed files with 92195 additions and 0 deletions
--- a/kern/include/types.h
+++ b/kern/include/types.h
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
+ *	The President and Fellows of Harvard College.
+ *
+ * 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 the University 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 UNIVERSITY 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 PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY 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; LOSS 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 POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _TYPES_H_
+#define _TYPES_H_
+
+/*
+ * Master kernel header file.
+ *
+ * The model for the include files in the kernel is as follows:
+ *
+ *     - Every source file includes this file, <types.h>, first.
+ *
+ *     - Every other header file may assume this file has been
+ *       included, but should explicitly include any other headers it
+ *       uses to compile.
+ *
+ *     - Some exceptions to the previous rules exist among the headers
+ *       exported to userland; those files should be included in the
+ *       kernel only indirectly via other, non-exported, headers, as
+ *       described in comments therein.
+ *
+ *     - Every source or header file should include each file it
+ *       directly uses, even if that header is included via some other
+ *       header. This helps to prevent build failures when unrelated
+ *       dependencies are changed around.
+ *
+ *     - As a matter of convention, the ordering of include files in
+ *       the base system is in order of subsystem dependence. That is,
+ *       lower-level code like <spinlock.h> should come before
+ *       higher-level code like <addrspace.h> or <vfs.h>. This
+ *       convention helps one to keep keep track of (and learn) the
+ *       organization of the system.
+ *
+ *       The general ordering is as follows:
+ *           1. <types.h>
+ *           2. Kernel ABI definitions, e.g. <kern/errno.h>.
+ *           3. Support code: <lib.h>, arrays, queues, etc.
+ *           4. Low-level code: locks, trapframes, etc.
+ *           5. Kernel subsystems: threads, VM, VFS, etc.
+ *           6. System call layer, e.g. <elf.h>, <syscall.h>.
+ *
+ *       Subsystem-private headers (the only extant example is
+ *       switchframe.h) and then kernel option headers generated by
+ *       config come last.
+ *
+ *       There is no one perfect ordering, because the kernel is not
+ *       composed of perfectly nested layers. But for the most part
+ *       this principle produces a workable result.
+ */
+
+
+/* Get types visible to userland, both MI and MD. */
+#include <kern/types.h>
+
+/* Get machine-dependent types not visible to userland. */
+#include <machine/types.h>
+
+/*
+ * Define userptr_t as a pointer to a one-byte struct, so it won't mix
+ * with other pointers.
+ */
+
+struct __userptr { char _dummy; };
+typedef struct __userptr *userptr_t;
+typedef const struct __userptr *const_userptr_t;
+
+/*
+ * Proper (non-underscore) names for the types that are exposed to
+ * userland.
+ */
+
+/* machine-dependent from <kern/machine/types.h>... */
+typedef __i8 int8_t;
+typedef __i16 int16_t;
+typedef __i32 int32_t;
+typedef __i64 int64_t;
+typedef __u8 uint8_t;
+typedef __u16 uint16_t;
+typedef __u32 uint32_t;
+typedef __u64 uint64_t;
+typedef __size_t size_t;
+typedef __ssize_t ssize_t;
+typedef __intptr_t intptr_t;
+typedef __uintptr_t uintptr_t;
+typedef __ptrdiff_t ptrdiff_t;
+
+/* ...and machine-independent from <kern/types.h>. */
+typedef __blkcnt_t blkcnt_t;
+typedef __blksize_t blksize_t;
+typedef __daddr_t daddr_t;
+typedef __dev_t dev_t;
+typedef __fsid_t fsid_t;
+typedef __gid_t gid_t;
+typedef __in_addr_t in_addr_t;
+typedef __in_port_t in_port_t;
+typedef __ino_t ino_t;
+typedef __mode_t mode_t;
+typedef __nlink_t nlink_t;
+typedef __off_t off_t;
+typedef __pid_t pid_t;
+typedef __rlim_t rlim_t;
+typedef __sa_family_t sa_family_t;
+typedef __time_t time_t;
+typedef __uid_t uid_t;
+
+typedef __nfds_t nfds_t;
+typedef __socklen_t socklen_t;
+
+/*
+ * Number of bits per byte.
+ */
+
+#define CHAR_BIT __CHAR_BIT
+
+/*
+ * Null pointer.
+ */
+
+#define NULL ((void *)0)
+
+/*
+ * Boolean.
+ */
+typedef _Bool bool;
+#define true  1
+#define false 0
+
+#endif /* _TYPES_H_ */