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82a1c2fe | 1 | /* Define builtin-in macros for all front ends that perform preprocessing |
8d9254fc | 2 | Copyright (C) 2010-2020 Free Software Foundation, Inc. |
82a1c2fe FXC |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
4d0cdd0c | 23 | #include "memmodel.h" |
957060b5 | 24 | #include "target.h" |
82a1c2fe FXC |
25 | #include "tree.h" |
26 | #include "version.h" | |
27 | #include "flags.h" | |
c5d725c0 | 28 | #include "cpplib.h" |
82a1c2fe FXC |
29 | #include "cppbuiltin.h" |
30 | ||
31 | ||
32 | /* Parse a BASEVER version string of the format "major.minor.patchlevel" | |
33 | or "major.minor" to extract its components. */ | |
34 | void | |
35 | parse_basever (int *major, int *minor, int *patchlevel) | |
36 | { | |
37 | static int s_major = -1, s_minor, s_patchlevel; | |
38 | ||
39 | if (s_major == -1) | |
40 | if (sscanf (BASEVER, "%d.%d.%d", &s_major, &s_minor, &s_patchlevel) != 3) | |
41 | { | |
42 | sscanf (BASEVER, "%d.%d", &s_major, &s_minor); | |
43 | s_patchlevel = 0; | |
44 | } | |
45 | ||
46 | if (major) | |
47 | *major = s_major; | |
48 | ||
49 | if (minor) | |
50 | *minor = s_minor; | |
51 | ||
52 | if (patchlevel) | |
53 | *patchlevel = s_patchlevel; | |
54 | } | |
55 | ||
56 | ||
57 | /* Define __GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__ and __VERSION__. */ | |
58 | static void | |
59 | define__GNUC__ (cpp_reader *pfile) | |
60 | { | |
61 | int major, minor, patchlevel; | |
62 | ||
63 | parse_basever (&major, &minor, &patchlevel); | |
64 | cpp_define_formatted (pfile, "__GNUC__=%d", major); | |
65 | cpp_define_formatted (pfile, "__GNUC_MINOR__=%d", minor); | |
66 | cpp_define_formatted (pfile, "__GNUC_PATCHLEVEL__=%d", patchlevel); | |
67 | cpp_define_formatted (pfile, "__VERSION__=\"%s\"", version_string); | |
86951993 AM |
68 | cpp_define_formatted (pfile, "__ATOMIC_RELAXED=%d", MEMMODEL_RELAXED); |
69 | cpp_define_formatted (pfile, "__ATOMIC_SEQ_CST=%d", MEMMODEL_SEQ_CST); | |
70 | cpp_define_formatted (pfile, "__ATOMIC_ACQUIRE=%d", MEMMODEL_ACQUIRE); | |
71 | cpp_define_formatted (pfile, "__ATOMIC_RELEASE=%d", MEMMODEL_RELEASE); | |
72 | cpp_define_formatted (pfile, "__ATOMIC_ACQ_REL=%d", MEMMODEL_ACQ_REL); | |
73 | cpp_define_formatted (pfile, "__ATOMIC_CONSUME=%d", MEMMODEL_CONSUME); | |
82a1c2fe FXC |
74 | } |
75 | ||
76 | ||
77 | /* Define various built-in CPP macros that depend on language-independent | |
78 | compilation flags. */ | |
79 | static void | |
80 | define_builtin_macros_for_compilation_flags (cpp_reader *pfile) | |
81 | { | |
82 | if (flag_pic) | |
83 | { | |
84 | cpp_define_formatted (pfile, "__pic__=%d", flag_pic); | |
85 | cpp_define_formatted (pfile, "__PIC__=%d", flag_pic); | |
86 | } | |
87 | if (flag_pie) | |
88 | { | |
89 | cpp_define_formatted (pfile, "__pie__=%d", flag_pie); | |
90 | cpp_define_formatted (pfile, "__PIE__=%d", flag_pie); | |
91 | } | |
92 | ||
de5a5fa1 | 93 | if (flag_sanitize & SANITIZE_ADDRESS) |
70e0bf7b L |
94 | cpp_define (pfile, "__SANITIZE_ADDRESS__"); |
95 | ||
f3510625 MO |
96 | if (flag_sanitize & SANITIZE_THREAD) |
97 | cpp_define (pfile, "__SANITIZE_THREAD__"); | |
98 | ||
82a1c2fe FXC |
99 | if (optimize_size) |
100 | cpp_define (pfile, "__OPTIMIZE_SIZE__"); | |
101 | if (optimize) | |
102 | cpp_define (pfile, "__OPTIMIZE__"); | |
103 | ||
0576d21f | 104 | if (fast_math_flags_set_p (&global_options)) |
82a1c2fe FXC |
105 | cpp_define (pfile, "__FAST_MATH__"); |
106 | if (flag_signaling_nans) | |
107 | cpp_define (pfile, "__SUPPORT_SNAN__"); | |
2079956a JM |
108 | if (!flag_errno_math) |
109 | cpp_define (pfile, "__NO_MATH_ERRNO__"); | |
82a1c2fe FXC |
110 | |
111 | cpp_define_formatted (pfile, "__FINITE_MATH_ONLY__=%d", | |
112 | flag_finite_math_only); | |
113 | } | |
114 | ||
115 | ||
116 | /* Define built-in macros for LP64 targets. */ | |
117 | static void | |
118 | define_builtin_macros_for_lp64 (cpp_reader *pfile) | |
119 | { | |
120 | if (TYPE_PRECISION (long_integer_type_node) == 64 | |
121 | && POINTER_SIZE == 64 | |
122 | && TYPE_PRECISION (integer_type_node) == 32) | |
123 | { | |
124 | cpp_define (pfile, "_LP64"); | |
125 | cpp_define (pfile, "__LP64__"); | |
126 | } | |
127 | } | |
128 | ||
129 | ||
130 | /* Define macros for size of basic C types. */ | |
131 | static void | |
132 | define_builtin_macros_for_type_sizes (cpp_reader *pfile) | |
133 | { | |
134 | #define define_type_sizeof(NAME, TYPE) \ | |
16998094 | 135 | cpp_define_formatted (pfile, NAME"=" HOST_WIDE_INT_PRINT_DEC, \ |
ae7e9ddd | 136 | tree_to_uhwi (TYPE_SIZE_UNIT (TYPE))) |
82a1c2fe FXC |
137 | |
138 | define_type_sizeof ("__SIZEOF_INT__", integer_type_node); | |
139 | define_type_sizeof ("__SIZEOF_LONG__", long_integer_type_node); | |
140 | define_type_sizeof ("__SIZEOF_LONG_LONG__", long_long_integer_type_node); | |
141 | define_type_sizeof ("__SIZEOF_SHORT__", short_integer_type_node); | |
142 | define_type_sizeof ("__SIZEOF_FLOAT__", float_type_node); | |
143 | define_type_sizeof ("__SIZEOF_DOUBLE__", double_type_node); | |
144 | define_type_sizeof ("__SIZEOF_LONG_DOUBLE__", long_double_type_node); | |
145 | define_type_sizeof ("__SIZEOF_SIZE_T__", size_type_node); | |
146 | ||
147 | #undef define_type_sizeof | |
148 | ||
149 | cpp_define_formatted (pfile, "__CHAR_BIT__=%u", | |
150 | TYPE_PRECISION (char_type_node)); | |
151 | cpp_define_formatted (pfile, "__BIGGEST_ALIGNMENT__=%d", | |
152 | BIGGEST_ALIGNMENT / BITS_PER_UNIT); | |
153 | ||
18ed6ee4 NF |
154 | /* Define constants useful for implementing endian.h. */ |
155 | cpp_define (pfile, "__ORDER_LITTLE_ENDIAN__=1234"); | |
156 | cpp_define (pfile, "__ORDER_BIG_ENDIAN__=4321"); | |
157 | cpp_define (pfile, "__ORDER_PDP_ENDIAN__=3412"); | |
158 | ||
159 | if (WORDS_BIG_ENDIAN == BYTES_BIG_ENDIAN) | |
160 | cpp_define_formatted (pfile, "__BYTE_ORDER__=%s", | |
161 | (WORDS_BIG_ENDIAN | |
162 | ? "__ORDER_BIG_ENDIAN__" | |
163 | : "__ORDER_LITTLE_ENDIAN__")); | |
164 | else | |
165 | { | |
166 | /* Assert that we're only dealing with the PDP11 case. */ | |
17f84643 JR |
167 | gcc_assert (!BYTES_BIG_ENDIAN); |
168 | gcc_assert (WORDS_BIG_ENDIAN); | |
18ed6ee4 NF |
169 | |
170 | cpp_define (pfile, "__BYTE_ORDER__=__ORDER_PDP_ENDIAN__"); | |
171 | } | |
172 | ||
a3abe41c | 173 | cpp_define_formatted (pfile, "__FLOAT_WORD_ORDER__=%s", |
f87c158e | 174 | (targetm.float_words_big_endian () |
a3abe41c NF |
175 | ? "__ORDER_BIG_ENDIAN__" |
176 | : "__ORDER_LITTLE_ENDIAN__")); | |
177 | ||
82a1c2fe FXC |
178 | /* ptr_type_node can't be used here since ptr_mode is only set when |
179 | toplev calls backend_init which is not done with -E switch. */ | |
180 | cpp_define_formatted (pfile, "__SIZEOF_POINTER__=%d", | |
50b6ee8b | 181 | 1 << ceil_log2 ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)); |
82a1c2fe FXC |
182 | } |
183 | ||
184 | ||
185 | /* Define macros builtins common to all language performing CPP | |
186 | preprocessing. */ | |
187 | void | |
188 | define_language_independent_builtin_macros (cpp_reader *pfile) | |
189 | { | |
190 | define__GNUC__ (pfile); | |
191 | define_builtin_macros_for_compilation_flags (pfile); | |
192 | define_builtin_macros_for_lp64 (pfile); | |
193 | define_builtin_macros_for_type_sizes (pfile); | |
194 | } |