int_lib.h revision 215125 
1/* ===-- int_lib.h - configuration header for compiler-rt  -----------------===
2 *
3 *                     The LLVM Compiler Infrastructure
4 *
5 * This file is distributed under the University of Illinois Open Source
6 * License. See LICENSE.TXT for details.
7 *
8 * ===----------------------------------------------------------------------===
9 *
10 * This file is a configuration header for compiler-rt.
11 * This file is not part of the interface of this library.
12 *
13 * ===----------------------------------------------------------------------===
14 */
15
16#ifndef INT_LIB_H
17#define INT_LIB_H
18
19/* Assumption:  signed integral is 2's complement */
20/* Assumption:  right shift of signed negative is arithmetic shift */
21
22#include <limits.h>
23#include "endianness.h"
24#include <math.h>
25
26/* If compiling for kernel use, call panic() instead of abort(). */
27#ifdef KERNEL_USE
28extern void panic (const char *, ...);
29#define compilerrt_abort() \
30  panic("%s:%d: abort in %s", __FILE__, __LINE__, __FUNCTION__)
31#else
32#define compilerrt_abort() abort()
33#endif
34
35#if !defined(INFINITY) && defined(HUGE_VAL)
36#define INFINITY HUGE_VAL
37#endif /* INFINITY */
38
39typedef      int si_int;
40typedef unsigned su_int;
41
42typedef          long long di_int;
43typedef unsigned long long du_int;
44
45typedef union
46{
47    di_int all;
48    struct
49    {
50#if _YUGA_LITTLE_ENDIAN
51        su_int low;
52        si_int high;
53#else
54        si_int high;
55        su_int low;
56#endif /* _YUGA_LITTLE_ENDIAN */
57    }s;
58} dwords;
59
60typedef union
61{
62    du_int all;
63    struct
64    {
65#if _YUGA_LITTLE_ENDIAN
66        su_int low;
67        su_int high;
68#else
69        su_int high;
70        su_int low;
71#endif /* _YUGA_LITTLE_ENDIAN */
72    }s;
73} udwords;
74
75#if __x86_64
76
77typedef int      ti_int __attribute__ ((mode (TI)));
78typedef unsigned tu_int __attribute__ ((mode (TI)));
79
80typedef union
81{
82    ti_int all;
83    struct
84    {
85#if _YUGA_LITTLE_ENDIAN
86        du_int low;
87        di_int high;
88#else
89        di_int high;
90        du_int low;
91#endif /* _YUGA_LITTLE_ENDIAN */
92    }s;
93} twords;
94
95typedef union
96{
97    tu_int all;
98    struct
99    {
100#if _YUGA_LITTLE_ENDIAN
101        du_int low;
102        du_int high;
103#else
104        du_int high;
105        du_int low;
106#endif /* _YUGA_LITTLE_ENDIAN */
107    }s;
108} utwords;
109
110static inline ti_int make_ti(di_int h, di_int l) {
111    twords r;
112    r.s.high = h;
113    r.s.low = l;
114    return r.all;
115}
116
117static inline tu_int make_tu(du_int h, du_int l) {
118    utwords r;
119    r.s.high = h;
120    r.s.low = l;
121    return r.all;
122}
123
124#endif /* __x86_64 */
125
126typedef union
127{
128    su_int u;
129    float f;
130} float_bits;
131
132typedef union
133{
134    udwords u;
135    double  f;
136} double_bits;
137
138typedef struct
139{
140#if _YUGA_LITTLE_ENDIAN
141    udwords low;
142    udwords high;
143#else
144    udwords high;
145    udwords low;
146#endif /* _YUGA_LITTLE_ENDIAN */
147} uqwords;
148
149typedef union
150{
151    uqwords     u;
152    long double f;
153} long_double_bits;
154
155#endif /* INT_LIB_H */
156