usr/src/boot/sys/x86/include/_limits.h

   1 /*-
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)limits.h    8.3 (Berkeley) 1/4/94
  30  * $FreeBSD$
  31  */
  32
  33 #ifndef _MACHINE__LIMITS_H_
  34 #define _MACHINE__LIMITS_H_
  35
  36 /*
  37  * According to ANSI (section 2.2.4.2), the values below must be usable by
  38  * #if preprocessing directives.  Additionally, the expression must have the
  39  * same type as would an expression that is an object of the corresponding
  40  * type converted according to the integral promotions.  The subtraction for
  41  * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
  42  * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
  43  */
  44
  45 #define __CHAR_BIT      8               /* number of bits in a char */
  46
  47 #define __SCHAR_MAX     0x7f            /* max value for a signed char */
  48 #define __SCHAR_MIN     (-0x7f - 1)     /* min value for a signed char */
  49
  50 #define __UCHAR_MAX     0xff            /* max value for an unsigned char */
  51
  52 #define __USHRT_MAX     0xffff          /* max value for an unsigned short */
  53 #define __SHRT_MAX      0x7fff          /* max value for a short */
  54 #define __SHRT_MIN      (-0x7fff - 1)   /* min value for a short */
  55
  56 #define __UINT_MAX      0xffffffff      /* max value for an unsigned int */
  57 #define __INT_MAX       0x7fffffff      /* max value for an int */
  58 #define __INT_MIN       (-0x7fffffff - 1)       /* min value for an int */
  59
  60 #ifdef  __LP64__
  61 #define __ULONG_MAX     0xffffffffffffffff      /* max for an unsigned long */
  62 #define __LONG_MAX      0x7fffffffffffffff      /* max for a long */
  63 #define __LONG_MIN      (-0x7fffffffffffffff - 1) /* min for a long */
  64 #else
  65 #define __ULONG_MAX     0xffffffffUL
  66 #define __LONG_MAX      0x7fffffffL
  67 #define __LONG_MIN      (-0x7fffffffL - 1)
  68 #endif
  69
  70                         /* max value for an unsigned long long */
  71 #define __ULLONG_MAX    0xffffffffffffffffULL
  72 #define __LLONG_MAX     0x7fffffffffffffffLL    /* max value for a long long */
  73 #define __LLONG_MIN     (-0x7fffffffffffffffLL - 1)  /* min for a long long */
  74
  75 #ifdef  __LP64__
  76 #define __SSIZE_MAX     __LONG_MAX      /* max value for a ssize_t */
  77 #define __SIZE_T_MAX    __ULONG_MAX     /* max value for a size_t */
  78 #define __OFF_MAX       __LONG_MAX      /* max value for an off_t */
  79 #define __OFF_MIN       __LONG_MIN      /* min value for an off_t */
  80 /* Quads and longs are the same on the amd64.  Ensure they stay in sync. */
  81 #define __UQUAD_MAX     __ULONG_MAX     /* max value for a uquad_t */
  82 #define __QUAD_MAX      __LONG_MAX      /* max value for a quad_t */
  83 #define __QUAD_MIN      __LONG_MIN      /* min value for a quad_t */
  84 #define __LONG_BIT      64
  85 #else
  86 #define __SSIZE_MAX     __INT_MAX
  87 #define __SIZE_T_MAX    __UINT_MAX
  88 #define __OFF_MAX       __LLONG_MAX
  89 #define __OFF_MIN       __LLONG_MIN
  90 #define __UQUAD_MAX     __ULLONG_MAX
  91 #define __QUAD_MAX      __LLONG_MAX
  92 #define __QUAD_MIN      __LLONG_MIN
  93 #define __LONG_BIT      32
  94 #endif
  95
  96 #define __WORD_BIT      32
  97
  98 /* Minimum signal stack size. */
  99 #define __MINSIGSTKSZ   (512 * 4)
 100
 101 #endif /* !_MACHINE__LIMITS_H_ */