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
|
/* Define builtin-in macros for all front ends that perform preprocessing
Copyright (C) 2010
Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "version.h"
#include "flags.h"
#include "cpp-id-data.h"
#include "cppbuiltin.h"
#include "target.h"
/* Parse a BASEVER version string of the format "major.minor.patchlevel"
or "major.minor" to extract its components. */
void
parse_basever (int *major, int *minor, int *patchlevel)
{
static int s_major = -1, s_minor, s_patchlevel;
if (s_major == -1)
if (sscanf (BASEVER, "%d.%d.%d", &s_major, &s_minor, &s_patchlevel) != 3)
{
sscanf (BASEVER, "%d.%d", &s_major, &s_minor);
s_patchlevel = 0;
}
if (major)
*major = s_major;
if (minor)
*minor = s_minor;
if (patchlevel)
*patchlevel = s_patchlevel;
}
/* Define __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__ and __VERSION__. */
static void
define__GNUC__ (cpp_reader *pfile)
{
int major, minor, patchlevel;
parse_basever (&major, &minor, &patchlevel);
cpp_define_formatted (pfile, "__GNUC__=%d", major);
cpp_define_formatted (pfile, "__GNUC_MINOR__=%d", minor);
cpp_define_formatted (pfile, "__GNUC_PATCHLEVEL__=%d", patchlevel);
cpp_define_formatted (pfile, "__VERSION__=\"%s\"", version_string);
}
/* Define various built-in CPP macros that depend on language-independent
compilation flags. */
static void
define_builtin_macros_for_compilation_flags (cpp_reader *pfile)
{
if (flag_pic)
{
cpp_define_formatted (pfile, "__pic__=%d", flag_pic);
cpp_define_formatted (pfile, "__PIC__=%d", flag_pic);
}
if (flag_pie)
{
cpp_define_formatted (pfile, "__pie__=%d", flag_pie);
cpp_define_formatted (pfile, "__PIE__=%d", flag_pie);
}
if (optimize_size)
cpp_define (pfile, "__OPTIMIZE_SIZE__");
if (optimize)
cpp_define (pfile, "__OPTIMIZE__");
if (fast_math_flags_set_p (&global_options))
cpp_define (pfile, "__FAST_MATH__");
if (flag_signaling_nans)
cpp_define (pfile, "__SUPPORT_SNAN__");
cpp_define_formatted (pfile, "__FINITE_MATH_ONLY__=%d",
flag_finite_math_only);
}
/* Define built-in macros for LP64 targets. */
static void
define_builtin_macros_for_lp64 (cpp_reader *pfile)
{
if (TYPE_PRECISION (long_integer_type_node) == 64
&& POINTER_SIZE == 64
&& TYPE_PRECISION (integer_type_node) == 32)
{
cpp_define (pfile, "_LP64");
cpp_define (pfile, "__LP64__");
}
}
/* Define macros for size of basic C types. */
static void
define_builtin_macros_for_type_sizes (cpp_reader *pfile)
{
#define define_type_sizeof(NAME, TYPE) \
cpp_define_formatted (pfile, NAME"="HOST_WIDE_INT_PRINT_DEC, \
tree_low_cst (TYPE_SIZE_UNIT (TYPE), 1))
define_type_sizeof ("__SIZEOF_INT__", integer_type_node);
define_type_sizeof ("__SIZEOF_LONG__", long_integer_type_node);
define_type_sizeof ("__SIZEOF_LONG_LONG__", long_long_integer_type_node);
define_type_sizeof ("__SIZEOF_SHORT__", short_integer_type_node);
define_type_sizeof ("__SIZEOF_FLOAT__", float_type_node);
define_type_sizeof ("__SIZEOF_DOUBLE__", double_type_node);
define_type_sizeof ("__SIZEOF_LONG_DOUBLE__", long_double_type_node);
define_type_sizeof ("__SIZEOF_SIZE_T__", size_type_node);
#undef define_type_sizeof
cpp_define_formatted (pfile, "__CHAR_BIT__=%u",
TYPE_PRECISION (char_type_node));
cpp_define_formatted (pfile, "__BIGGEST_ALIGNMENT__=%d",
BIGGEST_ALIGNMENT / BITS_PER_UNIT);
/* Define constants useful for implementing endian.h. */
cpp_define (pfile, "__ORDER_LITTLE_ENDIAN__=1234");
cpp_define (pfile, "__ORDER_BIG_ENDIAN__=4321");
cpp_define (pfile, "__ORDER_PDP_ENDIAN__=3412");
if (WORDS_BIG_ENDIAN == BYTES_BIG_ENDIAN)
cpp_define_formatted (pfile, "__BYTE_ORDER__=%s",
(WORDS_BIG_ENDIAN
? "__ORDER_BIG_ENDIAN__"
: "__ORDER_LITTLE_ENDIAN__"));
else
{
/* Assert that we're only dealing with the PDP11 case. */
gcc_assert (!BYTES_BIG_ENDIAN);
gcc_assert (WORDS_BIG_ENDIAN);
cpp_define (pfile, "__BYTE_ORDER__=__ORDER_PDP_ENDIAN__");
}
cpp_define_formatted (pfile, "__FLOAT_WORD_ORDER__=%s",
(targetm.float_words_big_endian ()
? "__ORDER_BIG_ENDIAN__"
: "__ORDER_LITTLE_ENDIAN__"));
/* ptr_type_node can't be used here since ptr_mode is only set when
toplev calls backend_init which is not done with -E switch. */
cpp_define_formatted (pfile, "__SIZEOF_POINTER__=%d",
POINTER_SIZE / BITS_PER_UNIT);
}
/* Define macros builtins common to all language performing CPP
preprocessing. */
void
define_language_independent_builtin_macros (cpp_reader *pfile)
{
define__GNUC__ (pfile);
define_builtin_macros_for_compilation_flags (pfile);
define_builtin_macros_for_lp64 (pfile);
define_builtin_macros_for_type_sizes (pfile);
}
|
