incubator-nuttx/arch/z80/include/ez80/limits.h

93 lines
3.2 KiB
C
Raw Normal View History

/****************************************************************************
* arch/z80/include/ez80/limits.h
*
* Copyright (C) 2007-2009, 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
2014-04-14 06:22:22 +08:00
#ifndef __ARCH_Z80_INCLUDE_EZ80_LIMITS_H
#define __ARCH_Z80_INCLUDE_EZ80_LIMITS_H
/****************************************************************************
* Included Files
****************************************************************************/
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define CHAR_BIT 8
#define SCHAR_MIN (-SCHAR_MAX - 1)
#define SCHAR_MAX 127
#define UCHAR_MAX 255
/* These could be different on machines where char is unsigned */
#ifdef __CHAR_UNSIGNED__
#define CHAR_MIN 0
#define CHAR_MAX UCHAR_MAX
#else
#define CHAR_MIN SCHAR_MIN
#define CHAR_MAX SCHAR_MAX
#endif
#define SHRT_MIN (-SHRT_MAX - 1)
#define SHRT_MAX 32767
#define USHRT_MAX 65535U
#define INT_MIN (-INT_MAX - 1)
#define INT_MAX 32767
#define UINT_MAX 65535U
/* These change on 32-bit and 64-bit platforms */
#define LONG_MIN (-LONG_MAX - 1)
#define LONG_MAX 2147483647L
#define ULONG_MAX 4294967295UL
/* A pointer is 2 or 3 bytes, depending upon if the ez80 is in z80
* compatibility mode or not
*
* Z80 mode - 16 bits
* ADL mode - 24 bits
*/
#define PTR_MIN (-PTR_MAX - 1)
#ifdef CONFIG_EZ80_Z80MODE
#define PTR_MAX 32767
#define UPTR_MAX 65535U
#else
#define PTR_MAX 8388607
#define UPTR_MAX 16777215U
#endif
#endif /* __ARCH_Z80_INCLUDE_EZ80_LIMITS_H */