144 lines
2.3 KiB
C
144 lines
2.3 KiB
C
//===-- int_lib.h - configuration header for libgcc replacement -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a configuration header for libgcc replacement.
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// This file is not part of the interface of this library.
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//
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//===----------------------------------------------------------------------===//
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#ifndef INT_LIB_H
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#define INT_LIB_H
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// Assumption: signed integral is 2's complement
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// Assumption: right shift of signed negative is arithmetic shift
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#include <limits.h>
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#ifdef __LITTLE_ENDIAN__
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#if __LITTLE_ENDIAN__
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#define _YUGA_LITTLE_ENDIAN 1
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#define _YUGA_BIG_ENDIAN 0
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#endif
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#endif
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#ifdef __BIG_ENDIAN__
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#if __BIG_ENDIAN__
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#define _YUGA_LITTLE_ENDIAN 0
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#define _YUGA_BIG_ENDIAN 1
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#endif
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#endif
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#if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN)
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#error unable to determine endian
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#endif
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typedef int si_int;
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typedef unsigned su_int;
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typedef long long di_int;
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typedef unsigned long long du_int;
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typedef union
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{
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di_int all;
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struct
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{
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#if _YUGA_LITTLE_ENDIAN
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su_int low;
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si_int high;
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#else
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si_int high;
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su_int low;
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#endif
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};
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} dwords;
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typedef union
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{
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du_int all;
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struct
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{
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#if _YUGA_LITTLE_ENDIAN
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su_int low;
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su_int high;
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#else
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su_int high;
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su_int low;
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#endif
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};
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} udwords;
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#if __x86_64
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typedef int ti_int __attribute__ ((mode (TI)));
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typedef unsigned tu_int __attribute__ ((mode (TI)));
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typedef union
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{
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ti_int all;
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struct
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{
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#if _YUGA_LITTLE_ENDIAN
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du_int low;
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di_int high;
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#else
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di_int high;
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du_int low;
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#endif
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};
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} twords;
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typedef union
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{
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tu_int all;
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struct
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{
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#if _YUGA_LITTLE_ENDIAN
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du_int low;
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du_int high;
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#else
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du_int high;
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du_int low;
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#endif
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};
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} utwords;
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#endif
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typedef union
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{
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su_int u;
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float f;
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} float_bits;
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typedef union
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{
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udwords u;
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double f;
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} double_bits;
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typedef struct
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{
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#if _YUGA_LITTLE_ENDIAN
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udwords low;
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udwords high;
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#else
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udwords high;
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udwords low;
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#endif
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} uqwords;
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typedef union
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{
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uqwords u;
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long double f;
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} long_double_bits;
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#endif
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