bsd/arm/types.h

   1 /*
   2  * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
   3  */
   4 /*
   5  * Copyright 1995 NeXT Computer, Inc. All rights reserved.
   6  */
   7 /*
   8  * Copyright (c) 1990, 1993
   9  *      The Regents of the University of California.  All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      @(#)types.h     8.3 (Berkeley) 1/5/94
  40  */
  41
  42 #ifndef _MACHTYPES_H_
  43 #define _MACHTYPES_H_
  44
  45 #ifndef __ASSEMBLER__
  46 #include <arm/_types.h>
  47 #include <sys/cdefs.h>
  48 /*
  49  * Basic integral types.  Omit the typedef if
  50  * not possible for a machine/compiler combination.
  51  */
  52 #include <sys/_types/_int8_t.h>
  53 #include <sys/_types/_int16_t.h>
  54 #include <sys/_types/_int32_t.h>
  55 #include <sys/_types/_int64_t.h>
  56
  57 #include <sys/_types/_u_int8_t.h>
  58 #include <sys/_types/_u_int16_t.h>
  59 #include <sys/_types/_u_int32_t.h>
  60 #include <sys/_types/_u_int64_t.h>
  61
  62 #if __LP64__
  63 typedef int64_t                 register_t;
  64 #else
  65 typedef int32_t                 register_t;
  66 #endif
  67
  68 #include <sys/_types/_intptr_t.h>
  69 #include <sys/_types/_uintptr_t.h>
  70
  71 #if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
  72 /* These types are used for reserving the largest possible size. */
  73 #ifdef __arm64__
  74 typedef u_int64_t               user_addr_t;
  75 typedef u_int64_t               user_size_t;
  76 typedef int64_t                 user_ssize_t;
  77 typedef int64_t                 user_long_t;
  78 typedef u_int64_t               user_ulong_t;
  79 typedef int64_t                 user_time_t;
  80 typedef int64_t                 user_off_t;
  81 #else
  82 typedef u_int32_t               user_addr_t;
  83 typedef u_int32_t               user_size_t;
  84 typedef int32_t                 user_ssize_t;
  85 typedef int32_t                 user_long_t;
  86 typedef u_int32_t               user_ulong_t;
  87 typedef int32_t                 user_time_t;
  88 typedef int64_t                 user_off_t;
  89 #endif
  90
  91 #define USER_ADDR_NULL  ((user_addr_t) 0)
  92 #define CAST_USER_ADDR_T(a_ptr)   ((user_addr_t)((uintptr_t)(a_ptr)))
  93
  94 #ifdef KERNEL
  95
  96 /*
  97  * These types are used when you know the word size of the target
  98  * user process. They can be used to create struct layouts independent
  99  * of the types and alignment requirements of the current running
 100  * kernel.
 101  */
 102
 103 /*
 104  * The user64_ types are not used on the ARM platform, but exist
 105  * so that APIs that conditionalize their behavior based on the
 106  * size of an input structure (like many ioctl(2) implementations)
 107  * can differentiate those structures without a duplicate case
 108  * value.
 109  */
 110
 111 /*
 112  * The default ABI for the ARM platform aligns fundamental integral
 113  * data types to their natural boundaries, with a maximum alignment
 114  * of 4, even for 8-byte quantites.
 115  */
 116
 117 typedef __uint64_t              user64_addr_t;
 118 typedef __uint64_t              user64_size_t;
 119 typedef __int64_t               user64_ssize_t;
 120 typedef __int64_t               user64_long_t;
 121 typedef __uint64_t              user64_ulong_t;
 122 typedef __int64_t               user64_time_t;
 123 typedef __int64_t               user64_off_t;
 124
 125 typedef __uint32_t              user32_addr_t;
 126 typedef __uint32_t              user32_size_t;
 127 typedef __int32_t               user32_ssize_t;
 128 typedef __int32_t               user32_long_t;
 129 typedef __uint32_t              user32_ulong_t;
 130 typedef __int32_t               user32_time_t;
 131
 132 /*
 133  * This alignment is required to ensure symmetry between userspace and kernelspace
 134  * when the kernel is 64-bit and the user application is 32-bit. All currently
 135  * supported ARM slices (arm64/armv7k/arm64_32) contain the same type alignment
 136  * ABI so this alignment isn't needed for ARM.
 137  */
 138 #if defined(__x86_64__)
 139 typedef __int64_t               user32_off_t __attribute__((aligned(4)));
 140 #else
 141 typedef __int64_t               user32_off_t;
 142 #endif
 143
 144 #endif /* KERNEL */
 145
 146 #endif /* !_ANSI_SOURCE && (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
 147
 148 /* This defines the size of syscall arguments after copying into the kernel: */
 149 #if defined(__arm__)
 150 typedef u_int32_t               syscall_arg_t;
 151 #elif defined(__arm64__)
 152 typedef u_int64_t               syscall_arg_t;
 153 #else
 154 #error Unknown architecture.
 155 #endif
 156
 157 #endif /* __ASSEMBLER__ */
 158 #endif  /* _MACHTYPES_H_ */