Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)limits.h 8.3 (Berkeley) 1/4/94
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* $FreeBSD$
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*/
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#ifndef _MACHINE_LIMITS_H_
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#define _MACHINE_LIMITS_H_
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#define CHAR_BIT 8 /* number of bits in a char */
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#define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */
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/*
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* According to ANSI (section 2.2.4.2), the values below must be usable by
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* #if preprocessing directives. Additionally, the expression must have the
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* same type as would an expression that is an object of the corresponding
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* type converted according to the integral promotions. The subtraction for
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* INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
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* unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
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* These numbers are for the default configuration of gcc. They work for
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* some other compilers as well, but this should not be depended on.
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*/
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#define SCHAR_MAX 0x7f /* max value for a signed char */
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#define SCHAR_MIN (-0x7f-1) /* min value for a signed char */
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#define UCHAR_MAX 0xffU /* max value for an unsigned char */
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#define CHAR_MAX 0x7f /* max value for a char */
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#define CHAR_MIN (-0x7f-1) /* min value for a char */
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#define USHRT_MAX 0xffffU /* max value for an unsigned short */
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#define SHRT_MAX 0x7fff /* max value for a short */
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#define SHRT_MIN (-0x7fff-1) /* min value for a short */
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#define UINT_MAX 0xffffffffU /* max value for an unsigned int */
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#define INT_MAX 0x7fffffff /* max value for an int */
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#define INT_MIN (-0x7fffffff-1) /* min value for an int */
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#define ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */
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#define LONG_MAX 0x7fffffffffffffffL /* max for a long */
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#define LONG_MIN (-0x7fffffffffffffffL-1) /* min for a long */
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/* Long longs and longs are the same size on the alpha. */
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/* max for an unsigned long long */
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#define ULLONG_MAX 0xffffffffffffffffULL
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#define LLONG_MAX 0x7fffffffffffffffLL /* max for a long long */
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#define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min for a long long */
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#if !defined(_ANSI_SOURCE)
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#define SSIZE_MAX LONG_MAX /* max value for a ssize_t */
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#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
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#define SIZE_T_MAX ULONG_MAX /* max value for a size_t */
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2001-08-15 19:50:59 +00:00
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#define OFF_MAX LONG_MAX /* max value for a off_t */
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#define OFF_MIN LONG_MIN /* min value for a off_t */
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2001-08-15 19:25:08 +00:00
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Add skeleton machine dependent headers and c files for a port of freebsd
to a new architecture. This is the base of the sparc64 port, but contains
limited machine dependent code, and can be used a base for ports. Included
are:
- standard machine dependent headers, tweaked for a 64 bit, big endian
architecture, including empty versions of all the machine dependent
structures
- a machine independent atomic.h, which can be used until a port has
support for interrupts and the operations really need to be atomic
- stub versions of all the machine dependent functions, which panic
when called and print out the name of the function that needs to
be implemented. functions which are normally in assembly files are
not included, but this should reduce the number of different undefined
references on the first few compiles from hundreds to 5 or 6
Given minimal startup code and console support it should be trivial to
make this compile and run the first few sysinits on almost any architecture.
Requested by: alfred, imp, jhb
2001-07-31 05:45:16 +00:00
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/* Quads and longs are the same on the alpha. Ensure they stay in sync. */
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#define UQUAD_MAX (ULONG_MAX) /* max value for a uquad_t */
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#define QUAD_MAX (LONG_MAX) /* max value for a quad_t */
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#define QUAD_MIN (LONG_MIN) /* min value for a quad_t */
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#endif /* !_POSIX_SOURCE && !_XOPEN_SOURCE */
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#endif /* !_ANSI_SOURCE */
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#if (!defined(_ANSI_SOURCE)&&!defined(_POSIX_SOURCE)) || defined(_XOPEN_SOURCE)
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#define LONG_BIT 64
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#define WORD_BIT 32
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#define DBL_DIG 15
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#define DBL_MAX 1.7976931348623157E+308
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#define DBL_MIN 2.2250738585072014E-308
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#define FLT_DIG 6
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#define FLT_MAX 3.40282347E+38F
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#define FLT_MIN 1.17549435E-38F
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#endif
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#endif /* !_MACHINE_LIMITS_H_ */
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