int_lib.h revision 222656 
1/* ===-- int_lib.h - configuration header for compiler-rt  -----------------===
2 *
3 *                     The LLVM Compiler Infrastructure
4 *
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. 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 <stdint.h>
24#include "endianness.h"
25#include <math.h>
26
27/* If compiling for kernel use, call panic() instead of abort(). */
28#ifdef KERNEL_USE
29extern void panic (const char *, ...);
30#define compilerrt_abort() \
31  panic("%s:%d: abort in %s", __FILE__, __LINE__, __FUNCTION__)
32#else
33#define compilerrt_abort() abort()
34#endif
35
36#if !defined(INFINITY) && defined(HUGE_VAL)
37#define INFINITY HUGE_VAL
38#endif /* INFINITY */
39
40typedef      int si_int;
41typedef unsigned su_int;
42
43typedef          long long di_int;
44typedef unsigned long long du_int;
45
46typedef union
47{
48    di_int all;
49    struct
50    {
51#if _YUGA_LITTLE_ENDIAN
52        su_int low;
53        si_int high;
54#else
55        si_int high;
56        su_int low;
57#endif /* _YUGA_LITTLE_ENDIAN */
58    }s;
59} dwords;
60
61typedef union
62{
63    du_int all;
64    struct
65    {
66#if _YUGA_LITTLE_ENDIAN
67        su_int low;
68        su_int high;
69#else
70        su_int high;
71        su_int low;
72#endif /* _YUGA_LITTLE_ENDIAN */
73    }s;
74} udwords;
75
76#if __x86_64
77
78typedef int      ti_int __attribute__ ((mode (TI)));
79typedef unsigned tu_int __attribute__ ((mode (TI)));
80
81typedef union
82{
83    ti_int all;
84    struct
85    {
86#if _YUGA_LITTLE_ENDIAN
87        du_int low;
88        di_int high;
89#else
90        di_int high;
91        du_int low;
92#endif /* _YUGA_LITTLE_ENDIAN */
93    }s;
94} twords;
95
96typedef union
97{
98    tu_int all;
99    struct
100    {
101#if _YUGA_LITTLE_ENDIAN
102        du_int low;
103        du_int high;
104#else
105        du_int high;
106        du_int low;
107#endif /* _YUGA_LITTLE_ENDIAN */
108    }s;
109} utwords;
110
111static inline ti_int make_ti(di_int h, di_int l) {
112    twords r;
113    r.s.high = h;
114    r.s.low = l;
115    return r.all;
116}
117
118static inline tu_int make_tu(du_int h, du_int l) {
119    utwords r;
120    r.s.high = h;
121    r.s.low = l;
122    return r.all;
123}
124
125#endif /* __x86_64 */
126
127typedef union
128{
129    su_int u;
130    float f;
131} float_bits;
132
133typedef union
134{
135    udwords u;
136    double  f;
137} double_bits;
138
139typedef struct
140{
141#if _YUGA_LITTLE_ENDIAN
142    udwords low;
143    udwords high;
144#else
145    udwords high;
146    udwords low;
147#endif /* _YUGA_LITTLE_ENDIAN */
148} uqwords;
149
150typedef union
151{
152    uqwords     u;
153    long double f;
154} long_double_bits;
155
156#endif /* INT_LIB_H */
157