1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
|
//===-- int_lib.h - configuration header for compiler-rt -----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is not part of the interface of this library.
//
// This file defines various standard types, most importantly a number of unions
// used to access parts of larger types.
//
//===----------------------------------------------------------------------===//
#ifndef INT_TYPES_H
#define INT_TYPES_H
#include "int_endianness.h"
// si_int is defined in Linux sysroot's asm-generic/siginfo.h
#ifdef si_int
#undef si_int
#endif
typedef int32_t si_int;
typedef uint32_t su_int;
#if UINT_MAX == 0xFFFFFFFF
#define clzsi __builtin_clz
#define ctzsi __builtin_ctz
#elif ULONG_MAX == 0xFFFFFFFF
#define clzsi __builtin_clzl
#define ctzsi __builtin_ctzl
#else
#error could not determine appropriate clzsi macro for this system
#endif
typedef int64_t di_int;
typedef uint64_t 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 // _YUGA_LITTLE_ENDIAN
} s;
} 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 // _YUGA_LITTLE_ENDIAN
} s;
} udwords;
#if defined(__LP64__) || defined(__wasm__) || defined(__mips64) || \
defined(__SIZEOF_INT128__) || defined(_WIN64)
#define CRT_HAS_128BIT
#endif
// MSVC doesn't have a working 128bit integer type. Users should really compile
// compiler-rt with clang, but if they happen to be doing a standalone build for
// asan or something else, disable the 128 bit parts so things sort of work.
#if defined(_MSC_VER) && !defined(__clang__)
#undef CRT_HAS_128BIT
#endif
#ifdef CRT_HAS_128BIT
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 // _YUGA_LITTLE_ENDIAN
} s;
} 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 // _YUGA_LITTLE_ENDIAN
} s;
} utwords;
static __inline ti_int make_ti(di_int h, di_int l) {
twords r;
r.s.high = h;
r.s.low = l;
return r.all;
}
static __inline tu_int make_tu(du_int h, du_int l) {
utwords r;
r.s.high = h;
r.s.low = l;
return r.all;
}
#endif // CRT_HAS_128BIT
// FreeBSD's boot environment does not support using floating-point and poisons
// the float and double keywords.
#if defined(__FreeBSD__) && defined(_STANDALONE)
#define CRT_HAS_FLOATING_POINT 0
#else
#define CRT_HAS_FLOATING_POINT 1
#endif
#if CRT_HAS_FLOATING_POINT
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 // _YUGA_LITTLE_ENDIAN
} uqwords;
// Check if the target supports 80 bit extended precision long doubles.
// Notably, on x86 Windows, MSVC only provides a 64-bit long double, but GCC
// still makes it 80 bits. Clang will match whatever compiler it is trying to
// be compatible with. On 32-bit x86 Android, long double is 64 bits, while on
// x86_64 Android, long double is 128 bits.
#if (defined(__i386__) || defined(__x86_64__)) && \
!(defined(_MSC_VER) || defined(__ANDROID__))
#define HAS_80_BIT_LONG_DOUBLE 1
#elif defined(__m68k__) || defined(__ia64__)
#define HAS_80_BIT_LONG_DOUBLE 1
#else
#define HAS_80_BIT_LONG_DOUBLE 0
#endif
#if HAS_80_BIT_LONG_DOUBLE
typedef long double xf_float;
typedef union {
uqwords u;
xf_float f;
} xf_bits;
#endif
#ifdef __powerpc64__
// From https://gcc.gnu.org/wiki/Ieee128PowerPC:
// PowerPC64 uses the following suffixes:
// IFmode: IBM extended double
// KFmode: IEEE 128-bit floating point
// TFmode: Matches the default for long double. With -mabi=ieeelongdouble,
// it is IEEE 128-bit, with -mabi=ibmlongdouble IBM extended double
// Since compiler-rt only implements the tf set of libcalls, we use long double
// for the tf_float typedef.
typedef long double tf_float;
#define CRT_LDBL_128BIT
#define CRT_HAS_F128
#if __LDBL_MANT_DIG__ == 113 && !defined(__LONG_DOUBLE_IBM128__)
#define CRT_HAS_IEEE_TF
#define CRT_LDBL_IEEE_F128
#endif
#define TF_C(x) x##L
#elif __LDBL_MANT_DIG__ == 113 || \
(__FLT_RADIX__ == 16 && __LDBL_MANT_DIG__ == 28)
// Use long double instead of __float128 if it matches the IEEE 128-bit format
// or the IBM hexadecimal format.
#define CRT_LDBL_128BIT
#define CRT_HAS_F128
#if __LDBL_MANT_DIG__ == 113
#define CRT_HAS_IEEE_TF
#define CRT_LDBL_IEEE_F128
#endif
typedef long double tf_float;
#define TF_C(x) x##L
#elif defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__)
#define CRT_HAS___FLOAT128_KEYWORD
#define CRT_HAS_F128
// NB: we assume the __float128 type uses IEEE representation.
#define CRT_HAS_IEEE_TF
typedef __float128 tf_float;
#define TF_C(x) x##Q
#endif
#ifdef CRT_HAS_F128
typedef union {
uqwords u;
tf_float f;
} tf_bits;
#endif
// __(u)int128_t is currently needed to compile the *tf builtins as we would
// otherwise need to manually expand the bit manipulation on two 64-bit value.
#if defined(CRT_HAS_128BIT) && defined(CRT_HAS_F128)
#define CRT_HAS_TF_MODE
#endif
#if __STDC_VERSION__ >= 199901L
typedef float _Complex Fcomplex;
typedef double _Complex Dcomplex;
typedef long double _Complex Lcomplex;
#if defined(CRT_LDBL_128BIT)
typedef Lcomplex Qcomplex;
#define CRT_HAS_NATIVE_COMPLEX_F128
#elif defined(CRT_HAS___FLOAT128_KEYWORD)
#if defined(__clang_major__) && __clang_major__ > 10
// Clang prior to 11 did not support __float128 _Complex.
typedef __float128 _Complex Qcomplex;
#define CRT_HAS_NATIVE_COMPLEX_F128
#elif defined(__GNUC__) && __GNUC__ >= 7
// GCC does not allow __float128 _Complex, but accepts _Float128 _Complex.
typedef _Float128 _Complex Qcomplex;
#define CRT_HAS_NATIVE_COMPLEX_F128
#endif
#endif
#define COMPLEX_REAL(x) __real__(x)
#define COMPLEX_IMAGINARY(x) __imag__(x)
#else
typedef struct {
float real, imaginary;
} Fcomplex;
typedef struct {
double real, imaginary;
} Dcomplex;
typedef struct {
long double real, imaginary;
} Lcomplex;
#define COMPLEX_REAL(x) (x).real
#define COMPLEX_IMAGINARY(x) (x).imaginary
#endif
#ifdef CRT_HAS_NATIVE_COMPLEX_F128
#define COMPLEXTF_REAL(x) __real__(x)
#define COMPLEXTF_IMAGINARY(x) __imag__(x)
#elif defined(CRT_HAS_F128)
typedef struct {
tf_float real, imaginary;
} Qcomplex;
#define COMPLEXTF_REAL(x) (x).real
#define COMPLEXTF_IMAGINARY(x) (x).imaginary
#endif
#endif // CRT_HAS_FLOATING_POINT
#endif // INT_TYPES_H
|
