xnu-6153.121.1.tar.gz

[apple/xnu.git] / bsd / sys / sysent.h

diff --git a/bsd/sys/sysent.h b/bsd/sys/sysent.h
index 33c991c1482ae65535ff5c5795559432c43bc01f..b68b3cdedc884217e5f5c6d7865153c2fcba1a2b 100644 (file)
--- a/bsd/sys/sysent.h
+++ b/bsd/sys/sysent.h
@@ -1,8 +1,8 @@
 /*
- * Copyright (c) 2004-2012 Apple Inc. All rights reserved.
+ * Copyright (c) 2004-2014 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- * 
+ *
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
@@ -11,10 +11,10 @@
  * unlawful or unlicensed copies of an Apple operating system, or to
  * circumvent, violate, or enable the circumvention or violation of, any
  * terms of an Apple operating system software license agreement.
- * 
+ *
  * Please obtain a copy of the License at
  * http://www.opensource.apple.com/apsl/ and read it before using this file.
- * 
+ *
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -22,12 +22,12 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- * 
+ *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 #ifndef _SYS_SYSENT_H_
-#define        _SYS_SYSENT_H_
+#define _SYS_SYSENT_H_
 
 #include <sys/appleapiopts.h>
 #include <sys/cdefs.h>
@@ -35,45 +35,49 @@
 #ifdef KERNEL_PRIVATE
 #ifdef __APPLE_API_PRIVATE
 
-typedef        int32_t sy_call_t(struct proc *, void *, int *);
-typedef        void    sy_munge_t(const void *, void *);
+typedef int32_t sy_call_t(struct proc *, void *, int *);
+#if CONFIG_REQUIRES_U32_MUNGING
+typedef void    sy_munge_t(void *);
+#elif __arm__ && (__BIGGEST_ALIGNMENT__ > 4)
+typedef int     sy_munge_t(const void *, void *);
+#endif
 
-struct sysent {                /* system call table */
-       sy_call_t       *sy_call;       /* implementing function */
-       sy_munge_t      *sy_arg_munge32; /* system call arguments munger for 32-bit process */
-       sy_munge_t      *sy_arg_munge64; /* system call arguments munger for 64-bit process */
-       int32_t         sy_return_type; /* system call return types */
-       int16_t         sy_narg;        /* number of args */
-       uint16_t        sy_arg_bytes;   /* Total size of arguments in bytes for
-                                        * 32-bit system calls
-                                        */
+struct sysent {         /* system call table */
+       sy_call_t       *sy_call;       /* implementing function */
+#if CONFIG_REQUIRES_U32_MUNGING || (__arm__ && (__BIGGEST_ALIGNMENT__ > 4))
+       sy_munge_t      *sy_arg_munge32; /* system call arguments munger for 32-bit process */
+#endif
+       int32_t         sy_return_type; /* system call return types */
+       int16_t         sy_narg;        /* number of args */
+       uint16_t        sy_arg_bytes;   /* Total size of arguments in bytes for
+                                        * 32-bit system calls
+                                        */
 };
 
 #ifndef __INIT_SYSENT_C__
 extern struct sysent sysent[];
-#endif /* __INIT_SYSENT_C__ */
+#endif  /* __INIT_SYSENT_C__ */
 
-extern int nsysent;
-#define NUM_SYSENT     456     /* Current number of defined syscalls */
+extern const unsigned int nsysent;
 
-/* 
+/*
  * Valid values for sy_cancel
  */
-#define _SYSCALL_CANCEL_NONE   0               /* Not a cancellation point */
-#define _SYSCALL_CANCEL_PRE            1               /* Canbe cancelled on entry itself */
-#define _SYSCALL_CANCEL_POST   2               /* Can only be cancelled after syscall is run */
+#define _SYSCALL_CANCEL_NONE    0               /* Not a cancellation point */
+#define _SYSCALL_CANCEL_PRE             1               /* Canbe cancelled on entry itself */
+#define _SYSCALL_CANCEL_POST    2               /* Can only be cancelled after syscall is run */
 
 /*
  * Valid values for sy_return_type
  */
-#define _SYSCALL_RET_NONE              0
-#define _SYSCALL_RET_INT_T             1       
-#define _SYSCALL_RET_UINT_T            2       
-#define _SYSCALL_RET_OFF_T             3       
-#define _SYSCALL_RET_ADDR_T            4       
-#define _SYSCALL_RET_SIZE_T            5       
-#define _SYSCALL_RET_SSIZE_T   6       
-#define _SYSCALL_RET_UINT64_T  7
+#define _SYSCALL_RET_NONE               0
+#define _SYSCALL_RET_INT_T              1
+#define _SYSCALL_RET_UINT_T             2
+#define _SYSCALL_RET_OFF_T              3
+#define _SYSCALL_RET_ADDR_T             4
+#define _SYSCALL_RET_SIZE_T             5
+#define _SYSCALL_RET_SSIZE_T    6
+#define _SYSCALL_RET_UINT64_T   7
 
 #endif /* __APPLE_API_PRIVATE */
 #endif /* KERNEL_PRIVATE */