xref: /illumos-gate/usr/src/boot/sys/x86/include/_limits.h (revision 199767f8)
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_ */
102