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//===-- int_lib.h - configuration header for libgcc replacement -----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a configuration header for libgcc replacement.
// This file is not part of the interface of this library.
//
//===----------------------------------------------------------------------===//
#ifndef INT_LIB_H
#define INT_LIB_H
// Assumption: signed integral is 2's complement
// Assumption: right shift of signed negative is arithmetic shift
#include <limits.h>
// TODO: Improve this to minimal pre-processor hackish'ness.
#if defined (__SVR4) && defined (__sun)
// config.h build via CMake.
//#include <config.h>
// Solaris header for endian and byte swap
//#if defined HAVE_SYS_BYTEORDER_H
#include <sys/byteorder.h>
// Solaris defines endian by setting _LITTLE_ENDIAN or _BIG_ENDIAN
#ifdef _BIG_ENDIAN
# define IS_BIG_ENDIAN
#endif
#ifdef _LITTLE_ENDIAN
# define IS_LITTLE_ENDIAN
#endif
#ifdef IS_BIG_ENDIAN
#define __BIG_ENDIAN__ 1
#define __LITTLE_ENDIAN__ 0
#endif
#ifdef IS_LITTLE_ENDIAN
#define __BIG_ENDIAN__ 0
#define __LITTLE_ENDIAN__ 1
#endif
#endif //End of Solaris ifdef.
#ifdef __LITTLE_ENDIAN__
#if __LITTLE_ENDIAN__
#define _YUGA_LITTLE_ENDIAN 1
#define _YUGA_BIG_ENDIAN 0
#endif
#endif
#ifdef __BIG_ENDIAN__
#if __BIG_ENDIAN__
#define _YUGA_LITTLE_ENDIAN 0
#define _YUGA_BIG_ENDIAN 1
#endif
#endif
#if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN)
#error unable to determine endian
#endif
typedef int si_int;
typedef unsigned su_int;
typedef long long di_int;
typedef unsigned long long du_int;
typedef union
{
di_int all;
struct
{
#if _YUGA_LITTLE_ENDIAN
su_int low;
si_int high;
#else
si_int high;
su_int low;
#endif
};
} dwords;
typedef union
{
du_int all;
struct
{
#if _YUGA_LITTLE_ENDIAN
su_int low;
su_int high;
#else
su_int high;
su_int low;
#endif
};
} udwords;
#if __x86_64
typedef int ti_int __attribute__ ((mode (TI)));
typedef unsigned tu_int __attribute__ ((mode (TI)));
typedef union
{
ti_int all;
struct
{
#if _YUGA_LITTLE_ENDIAN
du_int low;
di_int high;
#else
di_int high;
du_int low;
#endif
};
} twords;
typedef union
{
tu_int all;
struct
{
#if _YUGA_LITTLE_ENDIAN
du_int low;
du_int high;
#else
du_int high;
du_int low;
#endif
};
} utwords;
inline
ti_int
make_ti(di_int h, di_int l)
{
twords r;
r.high = h;
r.low = l;
return r.all;
}
inline
tu_int
make_tu(du_int h, du_int l)
{
utwords r;
r.high = h;
r.low = l;
return r.all;
}
#endif
typedef union
{
su_int u;
float f;
} float_bits;
typedef union
{
udwords u;
double f;
} double_bits;
typedef struct
{
#if _YUGA_LITTLE_ENDIAN
udwords low;
udwords high;
#else
udwords high;
udwords low;
#endif
} uqwords;
typedef union
{
uqwords u;
long double f;
} long_double_bits;
#endif
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