89 lines
3.1 KiB
C
Executable File
89 lines
3.1 KiB
C
Executable File
/****************************************************************************
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* arch/z80/include/ez80/limits.h
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*
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* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_Z80_INCLUDE_EZ80_LIMITS_H
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#define __ARCH_Z80_INCLUDE_EZ80_LIMITS_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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/****************************************************************************
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* Definitions
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****************************************************************************/
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#define CHAR_BIT 8
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#define SCHAR_MIN 0x80
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#define SCHAR_MAX 0x7f
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#define UCHAR_MAX 0xff
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/* These could be different on machines where char is unsigned */
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#define CHAR_MIN SCHAR_MIN
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#define CHAR_MAX SCHAR_MAX
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#define SHRT_MIN 0x8000
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#define SHRT_MAX 0x7fff
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#define USHRT_MAX 0xffff
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#define INT_MIN 0x8000
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#define INT_MAX 0x7fff
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#define UINT_MAX 0xffff
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/* These change on 32-bit and 64-bit platforms */
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#define LONG_MAX 0x80000000
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#define LONG_MIN 0x7fffffff
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#define ULONG_MAX 0xffffffff
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/* A pointer is 2 or 3 bytes, depending upon if the ez80 is in z80
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* compatibility mode or not
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*
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* Z80 mode - 16 bits
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* ADL mode - 24 bits
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*/
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#ifdef CONFIG_EZ80_Z80MODE
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#define PTR_MIN 0x8000
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#define PTR_MAX 0x7fff
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#define UPTR_MAX 0xffff
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#else
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#define PTR_MIN 0x800000
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#define PTR_MAX 0x7fffff
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#define UPTR_MAX 0xffffff
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#endif
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#endif /* __ARCH_Z80_INCLUDE_EZ80_LIMITS_H */
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