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cb60f38d | 1 | /* Define builtin-in macros for the C family front ends. |
818ab71a | 2 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
cb60f38d NB |
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 | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
cb60f38d NB |
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 | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
cb60f38d NB |
19 | |
20 | #include "config.h" | |
21 | #include "system.h" | |
22 | #include "coretypes.h" | |
2adfab87 | 23 | #include "target.h" |
2adfab87 AM |
24 | #include "c-common.h" |
25 | #include "tm_p.h" /* For TARGET_CPU_CPP_BUILTINS & friends. */ | |
d8a2d370 | 26 | #include "stringpool.h" |
2adfab87 | 27 | #include "stor-layout.h" |
cb60f38d | 28 | #include "flags.h" |
cb60f38d | 29 | #include "c-pragma.h" |
a4b7d13c | 30 | #include "output.h" /* For user_label_prefix. */ |
f4ce02c5 | 31 | #include "debug.h" /* For dwarf2out_do_cfi_asm. */ |
677f3fa8 | 32 | #include "common/common-target.h" |
8e680db5 | 33 | #include "cpp-id-data.h" |
82a1c2fe | 34 | #include "cppbuiltin.h" |
cb60f38d | 35 | |
4e2e315f NB |
36 | #ifndef TARGET_OS_CPP_BUILTINS |
37 | # define TARGET_OS_CPP_BUILTINS() | |
38 | #endif | |
39 | ||
40 | #ifndef TARGET_OBJFMT_CPP_BUILTINS | |
41 | # define TARGET_OBJFMT_CPP_BUILTINS() | |
42 | #endif | |
43 | ||
cb60f38d NB |
44 | #ifndef REGISTER_PREFIX |
45 | #define REGISTER_PREFIX "" | |
46 | #endif | |
47 | ||
21282b1e | 48 | /* Non-static as some targets don't use it. */ |
35b1a6fa AJ |
49 | static void builtin_define_with_hex_fp_value (const char *, tree, |
50 | int, const char *, | |
264c41ed | 51 | const char *, |
35b1a6fa | 52 | const char *); |
85291069 | 53 | static void builtin_define_stdint_macros (void); |
207bf79d JM |
54 | static void builtin_define_constants (const char *, tree); |
55 | static void builtin_define_type_max (const char *, tree); | |
56 | static void builtin_define_type_minmax (const char *, const char *, tree); | |
b8698a0f | 57 | static void builtin_define_float_constants (const char *, |
1b1562a5 | 58 | const char *, |
264c41ed CD |
59 | const char *, |
60 | const char *, | |
35b1a6fa | 61 | tree); |
cb60f38d | 62 | |
0069111f MM |
63 | /* Return true if MODE provides a fast multiply/add (FMA) builtin function. |
64 | Originally this function used the fma optab, but that doesn't work with | |
65 | -save-temps, so just rely on the HAVE_fma macros for the standard floating | |
66 | point types. */ | |
67 | ||
68 | static bool | |
ef4bddc2 | 69 | mode_has_fma (machine_mode mode) |
0069111f MM |
70 | { |
71 | switch (mode) | |
72 | { | |
73 | #ifdef HAVE_fmasf4 | |
74 | case SFmode: | |
75 | return !!HAVE_fmasf4; | |
76 | #endif | |
77 | ||
78 | #ifdef HAVE_fmadf4 | |
79 | case DFmode: | |
80 | return !!HAVE_fmadf4; | |
81 | #endif | |
82 | ||
83 | #ifdef HAVE_fmaxf4 | |
84 | case XFmode: | |
85 | return !!HAVE_fmaxf4; | |
86 | #endif | |
87 | ||
88 | #ifdef HAVE_fmatf4 | |
89 | case TFmode: | |
90 | return !!HAVE_fmatf4; | |
91 | #endif | |
92 | ||
93 | default: | |
94 | break; | |
95 | } | |
96 | ||
97 | return false; | |
98 | } | |
99 | ||
024a85ae | 100 | /* Define NAME with value TYPE size_unit. */ |
7049e4eb | 101 | void |
024a85ae AK |
102 | builtin_define_type_sizeof (const char *name, tree type) |
103 | { | |
104 | builtin_define_with_int_value (name, | |
ae7e9ddd | 105 | tree_to_uhwi (TYPE_SIZE_UNIT (type))); |
024a85ae AK |
106 | } |
107 | ||
264c41ed CD |
108 | /* Define the float.h constants for TYPE using NAME_PREFIX, FP_SUFFIX, |
109 | and FP_CAST. */ | |
cb60f38d | 110 | static void |
b8698a0f L |
111 | builtin_define_float_constants (const char *name_prefix, |
112 | const char *fp_suffix, | |
113 | const char *fp_cast, | |
1b1562a5 | 114 | const char *fma_suffix, |
264c41ed | 115 | tree type) |
cb60f38d NB |
116 | { |
117 | /* Used to convert radix-based values to base 10 values in several cases. | |
118 | ||
119 | In the max_exp -> max_10_exp conversion for 128-bit IEEE, we need at | |
120 | least 6 significant digits for correct results. Using the fraction | |
121 | formed by (log(2)*1e6)/(log(10)*1e6) overflows a 32-bit integer as an | |
122 | intermediate; perhaps someone can find a better approximation, in the | |
123 | mean time, I suspect using doubles won't harm the bootstrap here. */ | |
124 | ||
125 | const double log10_2 = .30102999566398119521; | |
126 | double log10_b; | |
127 | const struct real_format *fmt; | |
8ce94e44 | 128 | const struct real_format *ldfmt; |
cb60f38d NB |
129 | |
130 | char name[64], buf[128]; | |
131 | int dig, min_10_exp, max_10_exp; | |
132 | int decimal_dig; | |
2778d766 | 133 | int type_decimal_dig; |
cb60f38d | 134 | |
70a01792 | 135 | fmt = REAL_MODE_FORMAT (TYPE_MODE (type)); |
9a8ce21f | 136 | gcc_assert (fmt->b != 10); |
8ce94e44 JM |
137 | ldfmt = REAL_MODE_FORMAT (TYPE_MODE (long_double_type_node)); |
138 | gcc_assert (ldfmt->b != 10); | |
cb60f38d NB |
139 | |
140 | /* The radix of the exponent representation. */ | |
141 | if (type == float_type_node) | |
142 | builtin_define_with_int_value ("__FLT_RADIX__", fmt->b); | |
4d8a8a0a | 143 | log10_b = log10_2; |
cb60f38d NB |
144 | |
145 | /* The number of radix digits, p, in the floating-point significand. */ | |
146 | sprintf (name, "__%s_MANT_DIG__", name_prefix); | |
147 | builtin_define_with_int_value (name, fmt->p); | |
148 | ||
149 | /* The number of decimal digits, q, such that any floating-point number | |
150 | with q decimal digits can be rounded into a floating-point number with | |
151 | p radix b digits and back again without change to the q decimal digits, | |
152 | ||
153 | p log10 b if b is a power of 10 | |
35b1a6fa | 154 | floor((p - 1) log10 b) otherwise |
cb60f38d NB |
155 | */ |
156 | dig = (fmt->p - 1) * log10_b; | |
157 | sprintf (name, "__%s_DIG__", name_prefix); | |
158 | builtin_define_with_int_value (name, dig); | |
159 | ||
160 | /* The minimum negative int x such that b**(x-1) is a normalized float. */ | |
161 | sprintf (name, "__%s_MIN_EXP__", name_prefix); | |
162 | sprintf (buf, "(%d)", fmt->emin); | |
163 | builtin_define_with_value (name, buf, 0); | |
164 | ||
165 | /* The minimum negative int x such that 10**x is a normalized float, | |
166 | ||
167 | ceil (log10 (b ** (emin - 1))) | |
168 | = ceil (log10 (b) * (emin - 1)) | |
169 | ||
170 | Recall that emin is negative, so the integer truncation calculates | |
171 | the ceiling, not the floor, in this case. */ | |
172 | min_10_exp = (fmt->emin - 1) * log10_b; | |
173 | sprintf (name, "__%s_MIN_10_EXP__", name_prefix); | |
174 | sprintf (buf, "(%d)", min_10_exp); | |
175 | builtin_define_with_value (name, buf, 0); | |
176 | ||
177 | /* The maximum int x such that b**(x-1) is a representable float. */ | |
178 | sprintf (name, "__%s_MAX_EXP__", name_prefix); | |
179 | builtin_define_with_int_value (name, fmt->emax); | |
180 | ||
181 | /* The maximum int x such that 10**x is in the range of representable | |
182 | finite floating-point numbers, | |
183 | ||
184 | floor (log10((1 - b**-p) * b**emax)) | |
185 | = floor (log10(1 - b**-p) + log10(b**emax)) | |
186 | = floor (log10(1 - b**-p) + log10(b)*emax) | |
187 | ||
188 | The safest thing to do here is to just compute this number. But since | |
189 | we don't link cc1 with libm, we cannot. We could implement log10 here | |
190 | a series expansion, but that seems too much effort because: | |
191 | ||
192 | Note that the first term, for all extant p, is a number exceedingly close | |
193 | to zero, but slightly negative. Note that the second term is an integer | |
194 | scaling an irrational number, and that because of the floor we are only | |
195 | interested in its integral portion. | |
196 | ||
197 | In order for the first term to have any effect on the integral portion | |
198 | of the second term, the second term has to be exceedingly close to an | |
199 | integer itself (e.g. 123.000000000001 or something). Getting a result | |
200 | that close to an integer requires that the irrational multiplicand have | |
201 | a long series of zeros in its expansion, which doesn't occur in the | |
202 | first 20 digits or so of log10(b). | |
203 | ||
204 | Hand-waving aside, crunching all of the sets of constants above by hand | |
205 | does not yield a case for which the first term is significant, which | |
206 | in the end is all that matters. */ | |
207 | max_10_exp = fmt->emax * log10_b; | |
208 | sprintf (name, "__%s_MAX_10_EXP__", name_prefix); | |
209 | builtin_define_with_int_value (name, max_10_exp); | |
210 | ||
211 | /* The number of decimal digits, n, such that any floating-point number | |
212 | can be rounded to n decimal digits and back again without change to | |
35b1a6fa | 213 | the value. |
cb60f38d NB |
214 | |
215 | p * log10(b) if b is a power of 10 | |
216 | ceil(1 + p * log10(b)) otherwise | |
217 | ||
218 | The only macro we care about is this number for the widest supported | |
219 | floating type, but we want this value for rendering constants below. */ | |
220 | { | |
8ce94e44 JM |
221 | double d_decimal_dig |
222 | = 1 + (fmt->p < ldfmt->p ? ldfmt->p : fmt->p) * log10_b; | |
cb60f38d NB |
223 | decimal_dig = d_decimal_dig; |
224 | if (decimal_dig < d_decimal_dig) | |
225 | decimal_dig++; | |
226 | } | |
2778d766 JM |
227 | /* Similar, for this type rather than long double. */ |
228 | { | |
229 | double type_d_decimal_dig = 1 + fmt->p * log10_b; | |
230 | type_decimal_dig = type_d_decimal_dig; | |
231 | if (type_decimal_dig < type_d_decimal_dig) | |
232 | type_decimal_dig++; | |
233 | } | |
cb60f38d NB |
234 | if (type == long_double_type_node) |
235 | builtin_define_with_int_value ("__DECIMAL_DIG__", decimal_dig); | |
2778d766 JM |
236 | else |
237 | { | |
238 | sprintf (name, "__%s_DECIMAL_DIG__", name_prefix); | |
239 | builtin_define_with_int_value (name, type_decimal_dig); | |
240 | } | |
cb60f38d NB |
241 | |
242 | /* Since, for the supported formats, B is always a power of 2, we | |
243 | construct the following numbers directly as a hexadecimal | |
244 | constants. */ | |
7faa1bbb | 245 | get_max_float (fmt, buf, sizeof (buf)); |
b8698a0f | 246 | |
cb60f38d | 247 | sprintf (name, "__%s_MAX__", name_prefix); |
264c41ed | 248 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d NB |
249 | |
250 | /* The minimum normalized positive floating-point number, | |
251 | b**(emin-1). */ | |
252 | sprintf (name, "__%s_MIN__", name_prefix); | |
4d8a8a0a | 253 | sprintf (buf, "0x1p%d", fmt->emin - 1); |
264c41ed | 254 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d NB |
255 | |
256 | /* The difference between 1 and the least value greater than 1 that is | |
257 | representable in the given floating point type, b**(1-p). */ | |
258 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
59d7d767 GK |
259 | if (fmt->pnan < fmt->p) |
260 | /* This is an IBM extended double format, so 1.0 + any double is | |
261 | representable precisely. */ | |
4d8a8a0a | 262 | sprintf (buf, "0x1p%d", fmt->emin - fmt->p); |
c22cacf3 | 263 | else |
4d8a8a0a | 264 | sprintf (buf, "0x1p%d", 1 - fmt->p); |
264c41ed | 265 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d | 266 | |
179b5a55 MG |
267 | /* For C++ std::numeric_limits<T>::denorm_min and C11 *_TRUE_MIN. |
268 | The minimum denormalized positive floating-point number, b**(emin-p). | |
269 | The minimum normalized positive floating-point number for formats | |
270 | that don't support denormals. */ | |
cb60f38d | 271 | sprintf (name, "__%s_DENORM_MIN__", name_prefix); |
179b5a55 MG |
272 | sprintf (buf, "0x1p%d", fmt->emin - (fmt->has_denorm ? fmt->p : 1)); |
273 | builtin_define_with_hex_fp_value (name, type, decimal_dig, | |
274 | buf, fp_suffix, fp_cast); | |
cb60f38d | 275 | |
264c41ed CD |
276 | sprintf (name, "__%s_HAS_DENORM__", name_prefix); |
277 | builtin_define_with_value (name, fmt->has_denorm ? "1" : "0", 0); | |
278 | ||
cb60f38d NB |
279 | /* For C++ std::numeric_limits<T>::has_infinity. */ |
280 | sprintf (name, "__%s_HAS_INFINITY__", name_prefix); | |
35b1a6fa | 281 | builtin_define_with_int_value (name, |
cb60f38d NB |
282 | MODE_HAS_INFINITIES (TYPE_MODE (type))); |
283 | /* For C++ std::numeric_limits<T>::has_quiet_NaN. We do not have a | |
284 | predicate to distinguish a target that has both quiet and | |
285 | signalling NaNs from a target that has only quiet NaNs or only | |
286 | signalling NaNs, so we assume that a target that has any kind of | |
287 | NaN has quiet NaNs. */ | |
288 | sprintf (name, "__%s_HAS_QUIET_NAN__", name_prefix); | |
289 | builtin_define_with_int_value (name, MODE_HAS_NANS (TYPE_MODE (type))); | |
1b1562a5 MM |
290 | |
291 | /* Note whether we have fast FMA. */ | |
292 | if (mode_has_fma (TYPE_MODE (type))) | |
293 | { | |
294 | sprintf (name, "__FP_FAST_FMA%s", fma_suffix); | |
295 | builtin_define_with_int_value (name, 1); | |
296 | } | |
cb60f38d NB |
297 | } |
298 | ||
9a8ce21f JG |
299 | /* Define __DECx__ constants for TYPE using NAME_PREFIX and SUFFIX. */ |
300 | static void | |
b8698a0f L |
301 | builtin_define_decimal_float_constants (const char *name_prefix, |
302 | const char *suffix, | |
9a8ce21f JG |
303 | tree type) |
304 | { | |
305 | const struct real_format *fmt; | |
306 | char name[64], buf[128], *p; | |
307 | int digits; | |
308 | ||
309 | fmt = REAL_MODE_FORMAT (TYPE_MODE (type)); | |
310 | ||
311 | /* The number of radix digits, p, in the significand. */ | |
312 | sprintf (name, "__%s_MANT_DIG__", name_prefix); | |
313 | builtin_define_with_int_value (name, fmt->p); | |
314 | ||
315 | /* The minimum negative int x such that b**(x-1) is a normalized float. */ | |
316 | sprintf (name, "__%s_MIN_EXP__", name_prefix); | |
317 | sprintf (buf, "(%d)", fmt->emin); | |
318 | builtin_define_with_value (name, buf, 0); | |
319 | ||
320 | /* The maximum int x such that b**(x-1) is a representable float. */ | |
321 | sprintf (name, "__%s_MAX_EXP__", name_prefix); | |
322 | builtin_define_with_int_value (name, fmt->emax); | |
323 | ||
324 | /* Compute the minimum representable value. */ | |
325 | sprintf (name, "__%s_MIN__", name_prefix); | |
c52ec948 | 326 | sprintf (buf, "1E%d%s", fmt->emin - 1, suffix); |
b8698a0f | 327 | builtin_define_with_value (name, buf, 0); |
9a8ce21f JG |
328 | |
329 | /* Compute the maximum representable value. */ | |
330 | sprintf (name, "__%s_MAX__", name_prefix); | |
331 | p = buf; | |
332 | for (digits = fmt->p; digits; digits--) | |
333 | { | |
334 | *p++ = '9'; | |
335 | if (digits == fmt->p) | |
336 | *p++ = '.'; | |
337 | } | |
338 | *p = 0; | |
c52ec948 JJ |
339 | /* fmt->p plus 1, to account for the decimal point and fmt->emax |
340 | minus 1 because the digits are nines, not 1.0. */ | |
b8698a0f | 341 | sprintf (&buf[fmt->p + 1], "E%d%s", fmt->emax - 1, suffix); |
9a8ce21f JG |
342 | builtin_define_with_value (name, buf, 0); |
343 | ||
344 | /* Compute epsilon (the difference between 1 and least value greater | |
345 | than 1 representable). */ | |
346 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
347 | sprintf (buf, "1E-%d%s", fmt->p - 1, suffix); | |
348 | builtin_define_with_value (name, buf, 0); | |
349 | ||
c52ec948 JJ |
350 | /* Minimum subnormal positive decimal value. */ |
351 | sprintf (name, "__%s_SUBNORMAL_MIN__", name_prefix); | |
9a8ce21f JG |
352 | p = buf; |
353 | for (digits = fmt->p; digits > 1; digits--) | |
354 | { | |
355 | *p++ = '0'; | |
356 | if (digits == fmt->p) | |
357 | *p++ = '.'; | |
358 | } | |
359 | *p = 0; | |
b8698a0f | 360 | sprintf (&buf[fmt->p], "1E%d%s", fmt->emin - 1, suffix); |
9a8ce21f JG |
361 | builtin_define_with_value (name, buf, 0); |
362 | } | |
363 | ||
0f996086 CF |
364 | /* Define fixed-point constants for TYPE using NAME_PREFIX and SUFFIX. */ |
365 | ||
366 | static void | |
367 | builtin_define_fixed_point_constants (const char *name_prefix, | |
368 | const char *suffix, | |
369 | tree type) | |
370 | { | |
371 | char name[64], buf[256], *new_buf; | |
372 | int i, mod; | |
373 | ||
374 | sprintf (name, "__%s_FBIT__", name_prefix); | |
375 | builtin_define_with_int_value (name, TYPE_FBIT (type)); | |
376 | ||
377 | sprintf (name, "__%s_IBIT__", name_prefix); | |
378 | builtin_define_with_int_value (name, TYPE_IBIT (type)); | |
379 | ||
380 | /* If there is no suffix, defines are for fixed-point modes. | |
381 | We just return. */ | |
382 | if (strcmp (suffix, "") == 0) | |
383 | return; | |
384 | ||
385 | if (TYPE_UNSIGNED (type)) | |
386 | { | |
387 | sprintf (name, "__%s_MIN__", name_prefix); | |
388 | sprintf (buf, "0.0%s", suffix); | |
389 | builtin_define_with_value (name, buf, 0); | |
390 | } | |
391 | else | |
392 | { | |
393 | sprintf (name, "__%s_MIN__", name_prefix); | |
394 | if (ALL_ACCUM_MODE_P (TYPE_MODE (type))) | |
395 | sprintf (buf, "(-0X1P%d%s-0X1P%d%s)", TYPE_IBIT (type) - 1, suffix, | |
396 | TYPE_IBIT (type) - 1, suffix); | |
397 | else | |
398 | sprintf (buf, "(-0.5%s-0.5%s)", suffix, suffix); | |
399 | builtin_define_with_value (name, buf, 0); | |
400 | } | |
401 | ||
402 | sprintf (name, "__%s_MAX__", name_prefix); | |
403 | sprintf (buf, "0X"); | |
404 | new_buf = buf + 2; | |
405 | mod = (TYPE_FBIT (type) + TYPE_IBIT (type)) % 4; | |
406 | if (mod) | |
407 | sprintf (new_buf++, "%x", (1 << mod) - 1); | |
408 | for (i = 0; i < (TYPE_FBIT (type) + TYPE_IBIT (type)) / 4; i++) | |
409 | sprintf (new_buf++, "F"); | |
410 | sprintf (new_buf, "P-%d%s", TYPE_FBIT (type), suffix); | |
411 | builtin_define_with_value (name, buf, 0); | |
412 | ||
413 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
414 | sprintf (buf, "0x1P-%d%s", TYPE_FBIT (type), suffix); | |
415 | builtin_define_with_value (name, buf, 0); | |
416 | } | |
417 | ||
207bf79d | 418 | /* Define macros used by <stdint.h>. */ |
85291069 JM |
419 | static void |
420 | builtin_define_stdint_macros (void) | |
421 | { | |
207bf79d JM |
422 | builtin_define_type_max ("__INTMAX_MAX__", intmax_type_node); |
423 | builtin_define_constants ("__INTMAX_C", intmax_type_node); | |
424 | builtin_define_type_max ("__UINTMAX_MAX__", uintmax_type_node); | |
425 | builtin_define_constants ("__UINTMAX_C", uintmax_type_node); | |
426 | if (sig_atomic_type_node) | |
427 | builtin_define_type_minmax ("__SIG_ATOMIC_MIN__", "__SIG_ATOMIC_MAX__", | |
428 | sig_atomic_type_node); | |
429 | if (int8_type_node) | |
430 | builtin_define_type_max ("__INT8_MAX__", int8_type_node); | |
431 | if (int16_type_node) | |
432 | builtin_define_type_max ("__INT16_MAX__", int16_type_node); | |
433 | if (int32_type_node) | |
434 | builtin_define_type_max ("__INT32_MAX__", int32_type_node); | |
435 | if (int64_type_node) | |
436 | builtin_define_type_max ("__INT64_MAX__", int64_type_node); | |
437 | if (uint8_type_node) | |
438 | builtin_define_type_max ("__UINT8_MAX__", uint8_type_node); | |
ac868f29 EB |
439 | if (c_uint16_type_node) |
440 | builtin_define_type_max ("__UINT16_MAX__", c_uint16_type_node); | |
207bf79d JM |
441 | if (c_uint32_type_node) |
442 | builtin_define_type_max ("__UINT32_MAX__", c_uint32_type_node); | |
443 | if (c_uint64_type_node) | |
444 | builtin_define_type_max ("__UINT64_MAX__", c_uint64_type_node); | |
445 | if (int_least8_type_node) | |
446 | { | |
447 | builtin_define_type_max ("__INT_LEAST8_MAX__", int_least8_type_node); | |
448 | builtin_define_constants ("__INT8_C", int_least8_type_node); | |
449 | } | |
450 | if (int_least16_type_node) | |
451 | { | |
452 | builtin_define_type_max ("__INT_LEAST16_MAX__", int_least16_type_node); | |
453 | builtin_define_constants ("__INT16_C", int_least16_type_node); | |
454 | } | |
455 | if (int_least32_type_node) | |
456 | { | |
457 | builtin_define_type_max ("__INT_LEAST32_MAX__", int_least32_type_node); | |
458 | builtin_define_constants ("__INT32_C", int_least32_type_node); | |
459 | } | |
460 | if (int_least64_type_node) | |
461 | { | |
462 | builtin_define_type_max ("__INT_LEAST64_MAX__", int_least64_type_node); | |
463 | builtin_define_constants ("__INT64_C", int_least64_type_node); | |
464 | } | |
465 | if (uint_least8_type_node) | |
466 | { | |
467 | builtin_define_type_max ("__UINT_LEAST8_MAX__", uint_least8_type_node); | |
468 | builtin_define_constants ("__UINT8_C", uint_least8_type_node); | |
469 | } | |
470 | if (uint_least16_type_node) | |
471 | { | |
472 | builtin_define_type_max ("__UINT_LEAST16_MAX__", uint_least16_type_node); | |
473 | builtin_define_constants ("__UINT16_C", uint_least16_type_node); | |
474 | } | |
475 | if (uint_least32_type_node) | |
476 | { | |
477 | builtin_define_type_max ("__UINT_LEAST32_MAX__", uint_least32_type_node); | |
478 | builtin_define_constants ("__UINT32_C", uint_least32_type_node); | |
479 | } | |
480 | if (uint_least64_type_node) | |
481 | { | |
482 | builtin_define_type_max ("__UINT_LEAST64_MAX__", uint_least64_type_node); | |
483 | builtin_define_constants ("__UINT64_C", uint_least64_type_node); | |
484 | } | |
485 | if (int_fast8_type_node) | |
486 | builtin_define_type_max ("__INT_FAST8_MAX__", int_fast8_type_node); | |
487 | if (int_fast16_type_node) | |
488 | builtin_define_type_max ("__INT_FAST16_MAX__", int_fast16_type_node); | |
489 | if (int_fast32_type_node) | |
490 | builtin_define_type_max ("__INT_FAST32_MAX__", int_fast32_type_node); | |
491 | if (int_fast64_type_node) | |
492 | builtin_define_type_max ("__INT_FAST64_MAX__", int_fast64_type_node); | |
493 | if (uint_fast8_type_node) | |
494 | builtin_define_type_max ("__UINT_FAST8_MAX__", uint_fast8_type_node); | |
495 | if (uint_fast16_type_node) | |
496 | builtin_define_type_max ("__UINT_FAST16_MAX__", uint_fast16_type_node); | |
497 | if (uint_fast32_type_node) | |
498 | builtin_define_type_max ("__UINT_FAST32_MAX__", uint_fast32_type_node); | |
499 | if (uint_fast64_type_node) | |
500 | builtin_define_type_max ("__UINT_FAST64_MAX__", uint_fast64_type_node); | |
501 | if (intptr_type_node) | |
502 | builtin_define_type_max ("__INTPTR_MAX__", intptr_type_node); | |
503 | if (uintptr_type_node) | |
504 | builtin_define_type_max ("__UINTPTR_MAX__", uintptr_type_node); | |
85291069 JM |
505 | } |
506 | ||
ab442df7 MM |
507 | /* Adjust the optimization macros when a #pragma GCC optimization is done to |
508 | reflect the current level. */ | |
509 | void | |
510 | c_cpp_builtins_optimize_pragma (cpp_reader *pfile, tree prev_tree, | |
511 | tree cur_tree) | |
512 | { | |
513 | struct cl_optimization *prev = TREE_OPTIMIZATION (prev_tree); | |
514 | struct cl_optimization *cur = TREE_OPTIMIZATION (cur_tree); | |
515 | bool prev_fast_math; | |
516 | bool cur_fast_math; | |
517 | ||
518 | /* -undef turns off target-specific built-ins. */ | |
519 | if (flag_undef) | |
520 | return; | |
521 | ||
522 | /* Other target-independent built-ins determined by command-line | |
523 | options. */ | |
e3339d0f | 524 | if (!prev->x_optimize_size && cur->x_optimize_size) |
ab442df7 | 525 | cpp_define (pfile, "__OPTIMIZE_SIZE__"); |
e3339d0f | 526 | else if (prev->x_optimize_size && !cur->x_optimize_size) |
ab442df7 MM |
527 | cpp_undef (pfile, "__OPTIMIZE_SIZE__"); |
528 | ||
e3339d0f | 529 | if (!prev->x_optimize && cur->x_optimize) |
ab442df7 | 530 | cpp_define (pfile, "__OPTIMIZE__"); |
e3339d0f | 531 | else if (prev->x_optimize && !cur->x_optimize) |
ab442df7 MM |
532 | cpp_undef (pfile, "__OPTIMIZE__"); |
533 | ||
534 | prev_fast_math = fast_math_flags_struct_set_p (prev); | |
535 | cur_fast_math = fast_math_flags_struct_set_p (cur); | |
536 | if (!prev_fast_math && cur_fast_math) | |
537 | cpp_define (pfile, "__FAST_MATH__"); | |
538 | else if (prev_fast_math && !cur_fast_math) | |
539 | cpp_undef (pfile, "__FAST_MATH__"); | |
540 | ||
e3339d0f | 541 | if (!prev->x_flag_signaling_nans && cur->x_flag_signaling_nans) |
ab442df7 | 542 | cpp_define (pfile, "__SUPPORT_SNAN__"); |
e3339d0f | 543 | else if (prev->x_flag_signaling_nans && !cur->x_flag_signaling_nans) |
ab442df7 MM |
544 | cpp_undef (pfile, "__SUPPORT_SNAN__"); |
545 | ||
2079956a JM |
546 | if (!prev->x_flag_errno_math && cur->x_flag_errno_math) |
547 | cpp_undef (pfile, "__NO_MATH_ERRNO__"); | |
548 | else if (prev->x_flag_errno_math && !cur->x_flag_errno_math) | |
549 | cpp_define (pfile, "__NO_MATH_ERRNO__"); | |
550 | ||
e3339d0f | 551 | if (!prev->x_flag_finite_math_only && cur->x_flag_finite_math_only) |
ab442df7 MM |
552 | { |
553 | cpp_undef (pfile, "__FINITE_MATH_ONLY__"); | |
554 | cpp_define (pfile, "__FINITE_MATH_ONLY__=1"); | |
555 | } | |
0e3fdb48 | 556 | else if (prev->x_flag_finite_math_only && !cur->x_flag_finite_math_only) |
ab442df7 MM |
557 | { |
558 | cpp_undef (pfile, "__FINITE_MATH_ONLY__"); | |
559 | cpp_define (pfile, "__FINITE_MATH_ONLY__=0"); | |
560 | } | |
561 | } | |
562 | ||
563 | ||
62bad7cd AM |
564 | /* This function will emit cpp macros to indicate the presence of various lock |
565 | free atomic operations. */ | |
566 | ||
567 | static void | |
568 | cpp_atomic_builtins (cpp_reader *pfile) | |
569 | { | |
570 | /* Set a flag for each size of object that compare and swap exists for up to | |
571 | a 16 byte object. */ | |
572 | #define SWAP_LIMIT 17 | |
573 | bool have_swap[SWAP_LIMIT]; | |
574 | unsigned int psize; | |
575 | ||
576 | /* Clear the map of sizes compare_and swap exists for. */ | |
577 | memset (have_swap, 0, sizeof (have_swap)); | |
578 | ||
579 | /* Tell source code if the compiler makes sync_compare_and_swap | |
580 | builtins available. */ | |
581 | #ifndef HAVE_sync_compare_and_swapqi | |
582 | #define HAVE_sync_compare_and_swapqi 0 | |
583 | #endif | |
584 | #ifndef HAVE_atomic_compare_and_swapqi | |
585 | #define HAVE_atomic_compare_and_swapqi 0 | |
586 | #endif | |
587 | ||
588 | if (HAVE_sync_compare_and_swapqi || HAVE_atomic_compare_and_swapqi) | |
589 | { | |
590 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1"); | |
591 | have_swap[1] = true; | |
592 | } | |
593 | ||
594 | #ifndef HAVE_sync_compare_and_swaphi | |
595 | #define HAVE_sync_compare_and_swaphi 0 | |
596 | #endif | |
597 | #ifndef HAVE_atomic_compare_and_swaphi | |
598 | #define HAVE_atomic_compare_and_swaphi 0 | |
599 | #endif | |
600 | if (HAVE_sync_compare_and_swaphi || HAVE_atomic_compare_and_swaphi) | |
601 | { | |
602 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2"); | |
603 | have_swap[2] = true; | |
604 | } | |
605 | ||
606 | #ifndef HAVE_sync_compare_and_swapsi | |
607 | #define HAVE_sync_compare_and_swapsi 0 | |
608 | #endif | |
609 | #ifndef HAVE_atomic_compare_and_swapsi | |
610 | #define HAVE_atomic_compare_and_swapsi 0 | |
611 | #endif | |
612 | if (HAVE_sync_compare_and_swapsi || HAVE_atomic_compare_and_swapsi) | |
613 | { | |
614 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4"); | |
615 | have_swap[4] = true; | |
616 | } | |
617 | ||
618 | #ifndef HAVE_sync_compare_and_swapdi | |
619 | #define HAVE_sync_compare_and_swapdi 0 | |
620 | #endif | |
621 | #ifndef HAVE_atomic_compare_and_swapdi | |
622 | #define HAVE_atomic_compare_and_swapdi 0 | |
623 | #endif | |
624 | if (HAVE_sync_compare_and_swapdi || HAVE_atomic_compare_and_swapdi) | |
625 | { | |
626 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8"); | |
627 | have_swap[8] = true; | |
628 | } | |
629 | ||
630 | #ifndef HAVE_sync_compare_and_swapti | |
631 | #define HAVE_sync_compare_and_swapti 0 | |
632 | #endif | |
633 | #ifndef HAVE_atomic_compare_and_swapti | |
634 | #define HAVE_atomic_compare_and_swapti 0 | |
635 | #endif | |
636 | if (HAVE_sync_compare_and_swapti || HAVE_atomic_compare_and_swapti) | |
637 | { | |
638 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16"); | |
639 | have_swap[16] = true; | |
640 | } | |
641 | ||
48b0b196 | 642 | /* Tell the source code about various types. These map to the C++11 and C11 |
62bad7cd AM |
643 | macros where 2 indicates lock-free always, and 1 indicates sometimes |
644 | lock free. */ | |
ae7e9ddd | 645 | #define SIZEOF_NODE(T) (tree_to_uhwi (TYPE_SIZE_UNIT (T))) |
62bad7cd AM |
646 | #define SWAP_INDEX(T) ((SIZEOF_NODE (T) < SWAP_LIMIT) ? SIZEOF_NODE (T) : 0) |
647 | builtin_define_with_int_value ("__GCC_ATOMIC_BOOL_LOCK_FREE", | |
648 | (have_swap[SWAP_INDEX (boolean_type_node)]? 2 : 1)); | |
649 | builtin_define_with_int_value ("__GCC_ATOMIC_CHAR_LOCK_FREE", | |
650 | (have_swap[SWAP_INDEX (signed_char_type_node)]? 2 : 1)); | |
651 | builtin_define_with_int_value ("__GCC_ATOMIC_CHAR16_T_LOCK_FREE", | |
652 | (have_swap[SWAP_INDEX (char16_type_node)]? 2 : 1)); | |
653 | builtin_define_with_int_value ("__GCC_ATOMIC_CHAR32_T_LOCK_FREE", | |
654 | (have_swap[SWAP_INDEX (char32_type_node)]? 2 : 1)); | |
655 | builtin_define_with_int_value ("__GCC_ATOMIC_WCHAR_T_LOCK_FREE", | |
656 | (have_swap[SWAP_INDEX (wchar_type_node)]? 2 : 1)); | |
657 | builtin_define_with_int_value ("__GCC_ATOMIC_SHORT_LOCK_FREE", | |
658 | (have_swap[SWAP_INDEX (short_integer_type_node)]? 2 : 1)); | |
659 | builtin_define_with_int_value ("__GCC_ATOMIC_INT_LOCK_FREE", | |
660 | (have_swap[SWAP_INDEX (integer_type_node)]? 2 : 1)); | |
661 | builtin_define_with_int_value ("__GCC_ATOMIC_LONG_LOCK_FREE", | |
662 | (have_swap[SWAP_INDEX (long_integer_type_node)]? 2 : 1)); | |
663 | builtin_define_with_int_value ("__GCC_ATOMIC_LLONG_LOCK_FREE", | |
664 | (have_swap[SWAP_INDEX (long_long_integer_type_node)]? 2 : 1)); | |
665 | ||
57c5ab1b RH |
666 | /* If we're dealing with a "set" value that doesn't exactly correspond |
667 | to a boolean truth value, let the library work around that. */ | |
668 | builtin_define_with_int_value ("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", | |
669 | targetm.atomic_test_and_set_trueval); | |
670 | ||
62bad7cd AM |
671 | /* ptr_type_node can't be used here since ptr_mode is only set when |
672 | toplev calls backend_init which is not done with -E or pch. */ | |
5b8300ea | 673 | psize = POINTER_SIZE_UNITS; |
62bad7cd AM |
674 | if (psize >= SWAP_LIMIT) |
675 | psize = 0; | |
676 | builtin_define_with_int_value ("__GCC_ATOMIC_POINTER_LOCK_FREE", | |
677 | (have_swap[psize]? 2 : 1)); | |
678 | } | |
679 | ||
9193fb05 JM |
680 | /* Return the value for __GCC_IEC_559. */ |
681 | static int | |
682 | cpp_iec_559_value (void) | |
683 | { | |
684 | /* The default is support for IEEE 754-2008. */ | |
685 | int ret = 2; | |
686 | ||
687 | /* float and double must be binary32 and binary64. If they are but | |
688 | with reversed NaN convention, at most IEEE 754-1985 is | |
689 | supported. */ | |
690 | const struct real_format *ffmt | |
691 | = REAL_MODE_FORMAT (TYPE_MODE (float_type_node)); | |
692 | const struct real_format *dfmt | |
693 | = REAL_MODE_FORMAT (TYPE_MODE (double_type_node)); | |
694 | if (!ffmt->qnan_msb_set || !dfmt->qnan_msb_set) | |
695 | ret = 1; | |
696 | if (ffmt->b != 2 | |
697 | || ffmt->p != 24 | |
698 | || ffmt->pnan != 24 | |
699 | || ffmt->emin != -125 | |
700 | || ffmt->emax != 128 | |
701 | || ffmt->signbit_rw != 31 | |
702 | || ffmt->round_towards_zero | |
703 | || !ffmt->has_sign_dependent_rounding | |
704 | || !ffmt->has_nans | |
705 | || !ffmt->has_inf | |
706 | || !ffmt->has_denorm | |
707 | || !ffmt->has_signed_zero | |
708 | || dfmt->b != 2 | |
709 | || dfmt->p != 53 | |
710 | || dfmt->pnan != 53 | |
711 | || dfmt->emin != -1021 | |
712 | || dfmt->emax != 1024 | |
713 | || dfmt->signbit_rw != 63 | |
714 | || dfmt->round_towards_zero | |
715 | || !dfmt->has_sign_dependent_rounding | |
716 | || !dfmt->has_nans | |
717 | || !dfmt->has_inf | |
718 | || !dfmt->has_denorm | |
719 | || !dfmt->has_signed_zero) | |
720 | ret = 0; | |
721 | ||
722 | /* In strict C standards conformance mode, consider unpredictable | |
6dbe0958 JM |
723 | excess precision to mean lack of IEEE 754 support. The same |
724 | applies to unpredictable contraction. For C++, and outside | |
725 | strict conformance mode, do not consider these options to mean | |
726 | lack of IEEE 754 support. */ | |
9193fb05 JM |
727 | if (flag_iso |
728 | && !c_dialect_cxx () | |
729 | && TARGET_FLT_EVAL_METHOD != 0 | |
254a0760 | 730 | && flag_excess_precision_cmdline != EXCESS_PRECISION_STANDARD) |
9193fb05 | 731 | ret = 0; |
6dbe0958 JM |
732 | if (flag_iso |
733 | && !c_dialect_cxx () | |
734 | && flag_fp_contract_mode == FP_CONTRACT_FAST) | |
735 | ret = 0; | |
9193fb05 JM |
736 | |
737 | /* Various options are contrary to IEEE 754 semantics. */ | |
738 | if (flag_unsafe_math_optimizations | |
739 | || flag_associative_math | |
740 | || flag_reciprocal_math | |
741 | || flag_finite_math_only | |
742 | || !flag_signed_zeros | |
743 | || flag_single_precision_constant) | |
744 | ret = 0; | |
745 | ||
746 | /* If the target does not support IEEE 754 exceptions and rounding | |
747 | modes, consider IEEE 754 support to be absent. */ | |
748 | if (!targetm.float_exceptions_rounding_supported_p ()) | |
749 | ret = 0; | |
750 | ||
751 | return ret; | |
752 | } | |
753 | ||
754 | /* Return the value for __GCC_IEC_559_COMPLEX. */ | |
755 | static int | |
756 | cpp_iec_559_complex_value (void) | |
757 | { | |
758 | /* The value is no bigger than that of __GCC_IEC_559. */ | |
759 | int ret = cpp_iec_559_value (); | |
760 | ||
761 | /* Some options are contrary to the required default state of the | |
762 | CX_LIMITED_RANGE pragma. */ | |
763 | if (flag_complex_method != 2) | |
764 | ret = 0; | |
765 | ||
766 | return ret; | |
767 | } | |
768 | ||
cb60f38d NB |
769 | /* Hook that registers front end and target-specific built-ins. */ |
770 | void | |
35b1a6fa | 771 | c_cpp_builtins (cpp_reader *pfile) |
cb60f38d | 772 | { |
78a7c317 DD |
773 | int i; |
774 | ||
cb60f38d NB |
775 | /* -undef turns off target-specific built-ins. */ |
776 | if (flag_undef) | |
777 | return; | |
778 | ||
82a1c2fe FXC |
779 | define_language_independent_builtin_macros (pfile); |
780 | ||
781 | if (c_dialect_cxx ()) | |
782 | { | |
783 | int major; | |
784 | parse_basever (&major, NULL, NULL); | |
785 | cpp_define_formatted (pfile, "__GNUG__=%d", major); | |
786 | } | |
cb60f38d NB |
787 | |
788 | /* For stddef.h. They require macros defined in c-common.c. */ | |
789 | c_stddef_cpp_builtins (); | |
790 | ||
a15f7cb8 | 791 | /* Set include test macros for all C/C++ (not for just C++11 etc.) |
42fd12b1 | 792 | The builtins __has_include__ and __has_include_next__ are defined |
a15f7cb8 ESR |
793 | in libcpp. */ |
794 | cpp_define (pfile, "__has_include(STR)=__has_include__(STR)"); | |
795 | cpp_define (pfile, "__has_include_next(STR)=__has_include_next__(STR)"); | |
796 | ||
37fa72e9 | 797 | if (c_dialect_cxx ()) |
cb60f38d | 798 | { |
c22cacf3 | 799 | if (flag_weak && SUPPORTS_ONE_ONLY) |
cb60f38d NB |
800 | cpp_define (pfile, "__GXX_WEAK__=1"); |
801 | else | |
802 | cpp_define (pfile, "__GXX_WEAK__=0"); | |
a15f7cb8 | 803 | |
cb60f38d NB |
804 | if (warn_deprecated) |
805 | cpp_define (pfile, "__DEPRECATED"); | |
a15f7cb8 | 806 | |
ba551ec2 | 807 | if (flag_rtti) |
42fd12b1 ESR |
808 | { |
809 | cpp_define (pfile, "__GXX_RTTI"); | |
810 | cpp_define (pfile, "__cpp_rtti=199711"); | |
811 | } | |
a15f7cb8 | 812 | |
604b2bfc | 813 | if (cxx_dialect >= cxx11) |
c573f4d5 | 814 | cpp_define (pfile, "__GXX_EXPERIMENTAL_CXX0X__"); |
a15f7cb8 ESR |
815 | |
816 | /* Binary literals have been allowed in g++ before C++11 | |
817 | and were standardized for C++14. */ | |
818 | if (!pedantic || cxx_dialect > cxx11) | |
819 | cpp_define (pfile, "__cpp_binary_literals=201304"); | |
94a073b2 | 820 | |
2aaeea19 JM |
821 | /* Similarly for hexadecimal floating point literals and C++17. */ |
822 | if (!pedantic || cpp_get_options (parse_in)->extended_numbers) | |
823 | cpp_define (pfile, "__cpp_hex_float=201603"); | |
824 | ||
94a073b2 JM |
825 | /* Arrays of runtime bound were removed from C++14, but we still |
826 | support GNU VLAs. Let's define this macro to a low number | |
827 | (corresponding to the initial test release of GNU C++) if we won't | |
828 | complain about use of VLAs. */ | |
829 | if (c_dialect_cxx () | |
830 | && (pedantic ? warn_vla == 0 : warn_vla <= 0)) | |
831 | cpp_define (pfile, "__cpp_runtime_arrays=198712"); | |
832 | ||
a15f7cb8 ESR |
833 | if (cxx_dialect >= cxx11) |
834 | { | |
329524f5 | 835 | /* Set feature test macros for C++11. */ |
13b380a3 JM |
836 | if (cxx_dialect <= cxx14) |
837 | cpp_define (pfile, "__cpp_unicode_characters=200704"); | |
a15f7cb8 ESR |
838 | cpp_define (pfile, "__cpp_raw_strings=200710"); |
839 | cpp_define (pfile, "__cpp_unicode_literals=200710"); | |
840 | cpp_define (pfile, "__cpp_user_defined_literals=200809"); | |
841 | cpp_define (pfile, "__cpp_lambdas=200907"); | |
acaa5911 JM |
842 | if (cxx_dialect == cxx11) |
843 | cpp_define (pfile, "__cpp_constexpr=200704"); | |
42fd12b1 | 844 | cpp_define (pfile, "__cpp_range_based_for=200907"); |
329524f5 PC |
845 | if (cxx_dialect <= cxx14) |
846 | cpp_define (pfile, "__cpp_static_assert=200410"); | |
a15f7cb8 ESR |
847 | cpp_define (pfile, "__cpp_decltype=200707"); |
848 | cpp_define (pfile, "__cpp_attributes=200809"); | |
849 | cpp_define (pfile, "__cpp_rvalue_reference=200610"); | |
850 | cpp_define (pfile, "__cpp_variadic_templates=200704"); | |
42fd12b1 ESR |
851 | cpp_define (pfile, "__cpp_initializer_lists=200806"); |
852 | cpp_define (pfile, "__cpp_delegating_constructors=200604"); | |
853 | cpp_define (pfile, "__cpp_nsdmi=200809"); | |
854 | cpp_define (pfile, "__cpp_inheriting_constructors=200802"); | |
855 | cpp_define (pfile, "__cpp_ref_qualifiers=200710"); | |
a15f7cb8 ESR |
856 | cpp_define (pfile, "__cpp_alias_templates=200704"); |
857 | } | |
858 | if (cxx_dialect > cxx11) | |
859 | { | |
329524f5 | 860 | /* Set feature test macros for C++14. */ |
a15f7cb8 ESR |
861 | cpp_define (pfile, "__cpp_return_type_deduction=201304"); |
862 | cpp_define (pfile, "__cpp_init_captures=201304"); | |
863 | cpp_define (pfile, "__cpp_generic_lambdas=201304"); | |
acaa5911 | 864 | cpp_define (pfile, "__cpp_constexpr=201304"); |
a15f7cb8 | 865 | cpp_define (pfile, "__cpp_decltype_auto=201304"); |
26f0e1d6 | 866 | cpp_define (pfile, "__cpp_aggregate_nsdmi=201304"); |
a15f7cb8 ESR |
867 | cpp_define (pfile, "__cpp_variable_templates=201304"); |
868 | cpp_define (pfile, "__cpp_digit_separators=201309"); | |
a15f7cb8 | 869 | } |
329524f5 PC |
870 | if (cxx_dialect > cxx14) |
871 | { | |
872 | /* Set feature test macros for C++1z. */ | |
13b380a3 | 873 | cpp_define (pfile, "__cpp_unicode_characters=201411"); |
329524f5 | 874 | cpp_define (pfile, "__cpp_static_assert=201411"); |
bdaaa8b7 | 875 | cpp_define (pfile, "__cpp_namespace_attributes=201411"); |
13b380a3 | 876 | cpp_define (pfile, "__cpp_enumerator_attributes=201411"); |
bdaaa8b7 | 877 | cpp_define (pfile, "__cpp_nested_namespace_definitions=201411"); |
08a1cadc | 878 | cpp_define (pfile, "__cpp_fold_expressions=201603"); |
2a9fb712 | 879 | cpp_define (pfile, "__cpp_nontype_template_args=201411"); |
329524f5 | 880 | } |
971e17ff AS |
881 | if (flag_concepts) |
882 | /* Use a value smaller than the 201507 specified in | |
883 | the TS, since we don't yet support extended auto. */ | |
884 | cpp_define (pfile, "__cpp_concepts=201500"); | |
b8fd7909 JM |
885 | if (flag_tm) |
886 | /* Use a value smaller than the 201505 specified in | |
887 | the TS, since we don't yet support atomic_cancel. */ | |
888 | cpp_define (pfile, "__cpp_transactional_memory=210500"); | |
a7fa8d18 ESR |
889 | if (flag_sized_deallocation) |
890 | cpp_define (pfile, "__cpp_sized_deallocation=201309"); | |
cb60f38d | 891 | } |
6cd77c3f RH |
892 | /* Note that we define this for C as well, so that we know if |
893 | __attribute__((cleanup)) will interface with EH. */ | |
2288bdbb | 894 | if (flag_exceptions) |
42fd12b1 ESR |
895 | { |
896 | cpp_define (pfile, "__EXCEPTIONS"); | |
897 | if (c_dialect_cxx ()) | |
898 | cpp_define (pfile, "__cpp_exceptions=199711"); | |
899 | } | |
cb60f38d | 900 | |
e0a21ab9 | 901 | /* Represents the C++ ABI version, always defined so it can be used while |
cb60f38d | 902 | preprocessing C and assembler. */ |
57702a80 | 903 | if (flag_abi_version == 0) |
785f21af JM |
904 | /* We should have set this to something real in c_common_post_options. */ |
905 | gcc_unreachable (); | |
57702a80 | 906 | else if (flag_abi_version == 1) |
1f838355 | 907 | /* Due to a historical accident, this version had the value |
57702a80 MM |
908 | "102". */ |
909 | builtin_define_with_int_value ("__GXX_ABI_VERSION", 102); | |
910 | else | |
e0a21ab9 | 911 | /* Newer versions have values 1002, 1003, .... */ |
c22cacf3 | 912 | builtin_define_with_int_value ("__GXX_ABI_VERSION", |
57702a80 | 913 | 1000 + flag_abi_version); |
cb60f38d NB |
914 | |
915 | /* libgcc needs to know this. */ | |
677f3fa8 | 916 | if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ) |
cb60f38d NB |
917 | cpp_define (pfile, "__USING_SJLJ_EXCEPTIONS__"); |
918 | ||
207bf79d JM |
919 | /* limits.h and stdint.h need to know these. */ |
920 | builtin_define_type_max ("__SCHAR_MAX__", signed_char_type_node); | |
921 | builtin_define_type_max ("__SHRT_MAX__", short_integer_type_node); | |
922 | builtin_define_type_max ("__INT_MAX__", integer_type_node); | |
923 | builtin_define_type_max ("__LONG_MAX__", long_integer_type_node); | |
924 | builtin_define_type_max ("__LONG_LONG_MAX__", long_long_integer_type_node); | |
925 | builtin_define_type_minmax ("__WCHAR_MIN__", "__WCHAR_MAX__", | |
926 | underlying_wchar_type_node); | |
927 | builtin_define_type_minmax ("__WINT_MIN__", "__WINT_MAX__", wint_type_node); | |
928 | builtin_define_type_max ("__PTRDIFF_MAX__", ptrdiff_type_node); | |
929 | builtin_define_type_max ("__SIZE_MAX__", size_type_node); | |
cb60f38d | 930 | |
e1217ac7 DD |
931 | if (c_dialect_cxx ()) |
932 | for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
933 | if (int_n_enabled_p[i]) | |
934 | { | |
935 | char buf[35+20+20]; | |
936 | ||
937 | /* These are used to configure the C++ library. */ | |
938 | ||
939 | if (!flag_iso || int_n_data[i].bitsize == POINTER_SIZE) | |
940 | { | |
941 | sprintf (buf, "__GLIBCXX_TYPE_INT_N_%d=__int%d", i, int_n_data[i].bitsize); | |
942 | cpp_define (parse_in, buf); | |
943 | ||
944 | sprintf (buf, "__GLIBCXX_BITSIZE_INT_N_%d=%d", i, int_n_data[i].bitsize); | |
945 | cpp_define (parse_in, buf); | |
946 | } | |
947 | } | |
78a7c317 | 948 | |
207bf79d | 949 | /* stdint.h and the testsuite need to know these. */ |
85291069 JM |
950 | builtin_define_stdint_macros (); |
951 | ||
9193fb05 JM |
952 | /* Provide information for library headers to determine whether to |
953 | define macros such as __STDC_IEC_559__ and | |
954 | __STDC_IEC_559_COMPLEX__. */ | |
955 | builtin_define_with_int_value ("__GCC_IEC_559", cpp_iec_559_value ()); | |
956 | builtin_define_with_int_value ("__GCC_IEC_559_COMPLEX", | |
957 | cpp_iec_559_complex_value ()); | |
958 | ||
82a1c2fe | 959 | /* float.h needs to know this. */ |
cb60f38d NB |
960 | builtin_define_with_int_value ("__FLT_EVAL_METHOD__", |
961 | TARGET_FLT_EVAL_METHOD); | |
962 | ||
9a8ce21f JG |
963 | /* And decfloat.h needs this. */ |
964 | builtin_define_with_int_value ("__DEC_EVAL_METHOD__", | |
965 | TARGET_DEC_EVAL_METHOD); | |
966 | ||
1b1562a5 | 967 | builtin_define_float_constants ("FLT", "F", "%s", "F", float_type_node); |
6ec637a4 JJ |
968 | /* Cast the double precision constants. This is needed when single |
969 | precision constants are specified or when pragma FLOAT_CONST_DECIMAL64 | |
970 | is used. The correct result is computed by the compiler when using | |
bb0a9581 NF |
971 | macros that include a cast. We use a different cast for C++ to avoid |
972 | problems with -Wold-style-cast. */ | |
973 | builtin_define_float_constants ("DBL", "L", | |
974 | (c_dialect_cxx () | |
975 | ? "double(%s)" | |
976 | : "((double)%s)"), | |
977 | "", double_type_node); | |
1b1562a5 MM |
978 | builtin_define_float_constants ("LDBL", "L", "%s", "L", |
979 | long_double_type_node); | |
cb60f38d | 980 | |
9a8ce21f JG |
981 | /* For decfloat.h. */ |
982 | builtin_define_decimal_float_constants ("DEC32", "DF", dfloat32_type_node); | |
983 | builtin_define_decimal_float_constants ("DEC64", "DD", dfloat64_type_node); | |
984 | builtin_define_decimal_float_constants ("DEC128", "DL", dfloat128_type_node); | |
985 | ||
0f996086 CF |
986 | /* For fixed-point fibt, ibit, max, min, and epsilon. */ |
987 | if (targetm.fixed_point_supported_p ()) | |
988 | { | |
989 | builtin_define_fixed_point_constants ("SFRACT", "HR", | |
990 | short_fract_type_node); | |
991 | builtin_define_fixed_point_constants ("USFRACT", "UHR", | |
992 | unsigned_short_fract_type_node); | |
993 | builtin_define_fixed_point_constants ("FRACT", "R", | |
994 | fract_type_node); | |
995 | builtin_define_fixed_point_constants ("UFRACT", "UR", | |
996 | unsigned_fract_type_node); | |
997 | builtin_define_fixed_point_constants ("LFRACT", "LR", | |
998 | long_fract_type_node); | |
999 | builtin_define_fixed_point_constants ("ULFRACT", "ULR", | |
1000 | unsigned_long_fract_type_node); | |
1001 | builtin_define_fixed_point_constants ("LLFRACT", "LLR", | |
1002 | long_long_fract_type_node); | |
1003 | builtin_define_fixed_point_constants ("ULLFRACT", "ULLR", | |
1004 | unsigned_long_long_fract_type_node); | |
1005 | builtin_define_fixed_point_constants ("SACCUM", "HK", | |
1006 | short_accum_type_node); | |
1007 | builtin_define_fixed_point_constants ("USACCUM", "UHK", | |
1008 | unsigned_short_accum_type_node); | |
1009 | builtin_define_fixed_point_constants ("ACCUM", "K", | |
1010 | accum_type_node); | |
1011 | builtin_define_fixed_point_constants ("UACCUM", "UK", | |
1012 | unsigned_accum_type_node); | |
1013 | builtin_define_fixed_point_constants ("LACCUM", "LK", | |
1014 | long_accum_type_node); | |
1015 | builtin_define_fixed_point_constants ("ULACCUM", "ULK", | |
1016 | unsigned_long_accum_type_node); | |
1017 | builtin_define_fixed_point_constants ("LLACCUM", "LLK", | |
1018 | long_long_accum_type_node); | |
1019 | builtin_define_fixed_point_constants ("ULLACCUM", "ULLK", | |
1020 | unsigned_long_long_accum_type_node); | |
1021 | ||
1022 | builtin_define_fixed_point_constants ("QQ", "", qq_type_node); | |
1023 | builtin_define_fixed_point_constants ("HQ", "", hq_type_node); | |
1024 | builtin_define_fixed_point_constants ("SQ", "", sq_type_node); | |
1025 | builtin_define_fixed_point_constants ("DQ", "", dq_type_node); | |
1026 | builtin_define_fixed_point_constants ("TQ", "", tq_type_node); | |
1027 | builtin_define_fixed_point_constants ("UQQ", "", uqq_type_node); | |
1028 | builtin_define_fixed_point_constants ("UHQ", "", uhq_type_node); | |
1029 | builtin_define_fixed_point_constants ("USQ", "", usq_type_node); | |
1030 | builtin_define_fixed_point_constants ("UDQ", "", udq_type_node); | |
1031 | builtin_define_fixed_point_constants ("UTQ", "", utq_type_node); | |
1032 | builtin_define_fixed_point_constants ("HA", "", ha_type_node); | |
1033 | builtin_define_fixed_point_constants ("SA", "", sa_type_node); | |
1034 | builtin_define_fixed_point_constants ("DA", "", da_type_node); | |
1035 | builtin_define_fixed_point_constants ("TA", "", ta_type_node); | |
1036 | builtin_define_fixed_point_constants ("UHA", "", uha_type_node); | |
1037 | builtin_define_fixed_point_constants ("USA", "", usa_type_node); | |
1038 | builtin_define_fixed_point_constants ("UDA", "", uda_type_node); | |
1039 | builtin_define_fixed_point_constants ("UTA", "", uta_type_node); | |
1040 | } | |
1041 | ||
10e48e39 RO |
1042 | /* For libgcc-internal use only. */ |
1043 | if (flag_building_libgcc) | |
53d68b9f | 1044 | { |
66bb34c0 | 1045 | /* Properties of floating-point modes for libgcc2.c. */ |
ef4bddc2 | 1046 | for (machine_mode mode = GET_CLASS_NARROWEST_MODE (MODE_FLOAT); |
66bb34c0 JM |
1047 | mode != VOIDmode; |
1048 | mode = GET_MODE_WIDER_MODE (mode)) | |
1049 | { | |
1050 | const char *name = GET_MODE_NAME (mode); | |
1051 | char *macro_name | |
1052 | = (char *) alloca (strlen (name) | |
1053 | + sizeof ("__LIBGCC__MANT_DIG__")); | |
1054 | sprintf (macro_name, "__LIBGCC_%s_MANT_DIG__", name); | |
1055 | builtin_define_with_int_value (macro_name, | |
1056 | REAL_MODE_FORMAT (mode)->p); | |
8cc4b7a2 JM |
1057 | if (!targetm.scalar_mode_supported_p (mode) |
1058 | || !targetm.libgcc_floating_mode_supported_p (mode)) | |
1059 | continue; | |
1060 | macro_name = (char *) alloca (strlen (name) | |
1061 | + sizeof ("__LIBGCC_HAS__MODE__")); | |
1062 | sprintf (macro_name, "__LIBGCC_HAS_%s_MODE__", name); | |
1063 | cpp_define (pfile, macro_name); | |
dd69f047 JM |
1064 | macro_name = (char *) alloca (strlen (name) |
1065 | + sizeof ("__LIBGCC__FUNC_EXT__")); | |
1066 | sprintf (macro_name, "__LIBGCC_%s_FUNC_EXT__", name); | |
1067 | const char *suffix; | |
1068 | if (mode == TYPE_MODE (double_type_node)) | |
1069 | suffix = ""; | |
1070 | else if (mode == TYPE_MODE (float_type_node)) | |
1071 | suffix = "f"; | |
1072 | else if (mode == TYPE_MODE (long_double_type_node)) | |
1073 | suffix = "l"; | |
1074 | /* ??? The following assumes the built-in functions (defined | |
1075 | in target-specific code) match the suffixes used for | |
1076 | constants. Because in fact such functions are not | |
1077 | defined for the 'w' suffix, 'l' is used there | |
1078 | instead. */ | |
1079 | else if (mode == targetm.c.mode_for_suffix ('q')) | |
1080 | suffix = "q"; | |
1081 | else if (mode == targetm.c.mode_for_suffix ('w')) | |
1082 | suffix = "l"; | |
1083 | else | |
1084 | gcc_unreachable (); | |
1085 | builtin_define_with_value (macro_name, suffix, 0); | |
9a79452d JM |
1086 | bool excess_precision = false; |
1087 | if (TARGET_FLT_EVAL_METHOD != 0 | |
1088 | && mode != TYPE_MODE (long_double_type_node) | |
1089 | && (mode == TYPE_MODE (float_type_node) | |
1090 | || mode == TYPE_MODE (double_type_node))) | |
1091 | switch (TARGET_FLT_EVAL_METHOD) | |
1092 | { | |
1093 | case -1: | |
1094 | case 2: | |
1095 | excess_precision = true; | |
1096 | break; | |
1097 | ||
1098 | case 1: | |
1099 | excess_precision = mode == TYPE_MODE (float_type_node); | |
1100 | break; | |
1101 | ||
1102 | default: | |
1103 | gcc_unreachable (); | |
1104 | } | |
1105 | macro_name = (char *) alloca (strlen (name) | |
1106 | + sizeof ("__LIBGCC__EXCESS_" | |
1107 | "PRECISION__")); | |
1108 | sprintf (macro_name, "__LIBGCC_%s_EXCESS_PRECISION__", name); | |
1109 | builtin_define_with_int_value (macro_name, excess_precision); | |
66bb34c0 JM |
1110 | } |
1111 | ||
53d68b9f JM |
1112 | /* For libgcc crtstuff.c and libgcc2.c. */ |
1113 | builtin_define_with_int_value ("__LIBGCC_EH_TABLES_CAN_BE_READ_ONLY__", | |
1114 | EH_TABLES_CAN_BE_READ_ONLY); | |
1115 | #ifdef EH_FRAME_SECTION_NAME | |
1116 | builtin_define_with_value ("__LIBGCC_EH_FRAME_SECTION_NAME__", | |
1117 | EH_FRAME_SECTION_NAME, 1); | |
1118 | #endif | |
1119 | #ifdef JCR_SECTION_NAME | |
1120 | builtin_define_with_value ("__LIBGCC_JCR_SECTION_NAME__", | |
1121 | JCR_SECTION_NAME, 1); | |
1122 | #endif | |
1123 | #ifdef CTORS_SECTION_ASM_OP | |
1124 | builtin_define_with_value ("__LIBGCC_CTORS_SECTION_ASM_OP__", | |
1125 | CTORS_SECTION_ASM_OP, 1); | |
1126 | #endif | |
1127 | #ifdef DTORS_SECTION_ASM_OP | |
1128 | builtin_define_with_value ("__LIBGCC_DTORS_SECTION_ASM_OP__", | |
1129 | DTORS_SECTION_ASM_OP, 1); | |
1130 | #endif | |
1131 | #ifdef TEXT_SECTION_ASM_OP | |
1132 | builtin_define_with_value ("__LIBGCC_TEXT_SECTION_ASM_OP__", | |
1133 | TEXT_SECTION_ASM_OP, 1); | |
1134 | #endif | |
1135 | #ifdef INIT_SECTION_ASM_OP | |
1136 | builtin_define_with_value ("__LIBGCC_INIT_SECTION_ASM_OP__", | |
1137 | INIT_SECTION_ASM_OP, 1); | |
1138 | #endif | |
1139 | #ifdef INIT_ARRAY_SECTION_ASM_OP | |
1140 | /* Despite the name of this target macro, the expansion is not | |
1141 | actually used, and may be empty rather than a string | |
1142 | constant. */ | |
1143 | cpp_define (pfile, "__LIBGCC_INIT_ARRAY_SECTION_ASM_OP__"); | |
1144 | #endif | |
1145 | ||
1146 | /* For libgcc enable-execute-stack.c. */ | |
1147 | builtin_define_with_int_value ("__LIBGCC_TRAMPOLINE_SIZE__", | |
1148 | TRAMPOLINE_SIZE); | |
1149 | ||
1150 | /* For libgcc generic-morestack.c and unwinder code. */ | |
581edfa3 TS |
1151 | if (STACK_GROWS_DOWNWARD) |
1152 | cpp_define (pfile, "__LIBGCC_STACK_GROWS_DOWNWARD__"); | |
53d68b9f JM |
1153 | |
1154 | /* For libgcc unwinder code. */ | |
1155 | #ifdef DONT_USE_BUILTIN_SETJMP | |
1156 | cpp_define (pfile, "__LIBGCC_DONT_USE_BUILTIN_SETJMP__"); | |
1157 | #endif | |
1158 | #ifdef DWARF_ALT_FRAME_RETURN_COLUMN | |
1159 | builtin_define_with_int_value ("__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__", | |
1160 | DWARF_ALT_FRAME_RETURN_COLUMN); | |
1161 | #endif | |
1162 | builtin_define_with_int_value ("__LIBGCC_DWARF_FRAME_REGISTERS__", | |
1163 | DWARF_FRAME_REGISTERS); | |
1164 | #ifdef EH_RETURN_STACKADJ_RTX | |
1165 | cpp_define (pfile, "__LIBGCC_EH_RETURN_STACKADJ_RTX__"); | |
1166 | #endif | |
1167 | #ifdef JMP_BUF_SIZE | |
1168 | builtin_define_with_int_value ("__LIBGCC_JMP_BUF_SIZE__", | |
1169 | JMP_BUF_SIZE); | |
1170 | #endif | |
1171 | builtin_define_with_int_value ("__LIBGCC_STACK_POINTER_REGNUM__", | |
1172 | STACK_POINTER_REGNUM); | |
1173 | ||
1174 | /* For libgcov. */ | |
1175 | builtin_define_with_int_value ("__LIBGCC_VTABLE_USES_DESCRIPTORS__", | |
1176 | TARGET_VTABLE_USES_DESCRIPTORS); | |
1177 | } | |
10e48e39 | 1178 | |
cb60f38d NB |
1179 | /* For use in assembly language. */ |
1180 | builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0); | |
1181 | builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0); | |
1182 | ||
1183 | /* Misc. */ | |
da1c7394 ILT |
1184 | if (flag_gnu89_inline) |
1185 | cpp_define (pfile, "__GNUC_GNU_INLINE__"); | |
1186 | else | |
1187 | cpp_define (pfile, "__GNUC_STDC_INLINE__"); | |
1188 | ||
e90acd93 | 1189 | if (flag_no_inline) |
cb60f38d | 1190 | cpp_define (pfile, "__NO_INLINE__"); |
cb60f38d NB |
1191 | |
1192 | if (flag_iso) | |
1193 | cpp_define (pfile, "__STRICT_ANSI__"); | |
1194 | ||
1195 | if (!flag_signed_char) | |
1196 | cpp_define (pfile, "__CHAR_UNSIGNED__"); | |
1197 | ||
8df83eae | 1198 | if (c_dialect_cxx () && TYPE_UNSIGNED (wchar_type_node)) |
cb60f38d NB |
1199 | cpp_define (pfile, "__WCHAR_UNSIGNED__"); |
1200 | ||
62bad7cd AM |
1201 | cpp_atomic_builtins (pfile); |
1202 | ||
d4ea4622 | 1203 | #ifdef DWARF2_UNWIND_INFO |
058514b3 | 1204 | if (dwarf2out_do_cfi_asm ()) |
d4ea4622 RH |
1205 | cpp_define (pfile, "__GCC_HAVE_DWARF2_CFI_ASM"); |
1206 | #endif | |
1207 | ||
cb60f38d | 1208 | /* Make the choice of ObjC runtime visible to source code. */ |
37fa72e9 | 1209 | if (c_dialect_objc () && flag_next_runtime) |
cb60f38d NB |
1210 | cpp_define (pfile, "__NEXT_RUNTIME__"); |
1211 | ||
84b8b0e0 | 1212 | /* Show the availability of some target pragmas. */ |
c54d7dc9 | 1213 | cpp_define (pfile, "__PRAGMA_REDEFINE_EXTNAME"); |
84b8b0e0 | 1214 | |
0ffb94cd JW |
1215 | /* Make the choice of the stack protector runtime visible to source code. |
1216 | The macro names and values here were chosen for compatibility with an | |
1217 | earlier implementation, i.e. ProPolice. */ | |
5434dc07 MD |
1218 | if (flag_stack_protect == 4) |
1219 | cpp_define (pfile, "__SSP_EXPLICIT__=4"); | |
f6bc1c4a HS |
1220 | if (flag_stack_protect == 3) |
1221 | cpp_define (pfile, "__SSP_STRONG__=3"); | |
7d69de61 RH |
1222 | if (flag_stack_protect == 2) |
1223 | cpp_define (pfile, "__SSP_ALL__=2"); | |
1224 | else if (flag_stack_protect == 1) | |
1225 | cpp_define (pfile, "__SSP__=1"); | |
1226 | ||
41dbbb37 TS |
1227 | if (flag_openacc) |
1228 | cpp_define (pfile, "_OPENACC=201306"); | |
1229 | ||
953ff289 | 1230 | if (flag_openmp) |
d9a6bd32 | 1231 | cpp_define (pfile, "_OPENMP=201511"); |
953ff289 | 1232 | |
78a7c317 DD |
1233 | for (i = 0; i < NUM_INT_N_ENTS; i ++) |
1234 | if (int_n_enabled_p[i]) | |
1235 | { | |
1236 | char buf[15+20]; | |
1237 | sprintf(buf, "__SIZEOF_INT%d__", int_n_data[i].bitsize); | |
1238 | builtin_define_type_sizeof (buf, | |
1239 | int_n_trees[i].signed_type); | |
1240 | } | |
024a85ae AK |
1241 | builtin_define_type_sizeof ("__SIZEOF_WCHAR_T__", wchar_type_node); |
1242 | builtin_define_type_sizeof ("__SIZEOF_WINT_T__", wint_type_node); | |
1243 | builtin_define_type_sizeof ("__SIZEOF_PTRDIFF_T__", | |
1244 | unsigned_ptrdiff_type_node); | |
024a85ae | 1245 | |
cb60f38d NB |
1246 | /* A straightforward target hook doesn't work, because of problems |
1247 | linking that hook's body when part of non-C front ends. */ | |
1248 | # define preprocessing_asm_p() (cpp_get_options (pfile)->lang == CLK_ASM) | |
1249 | # define preprocessing_trad_p() (cpp_get_options (pfile)->traditional) | |
1250 | # define builtin_define(TXT) cpp_define (pfile, TXT) | |
1251 | # define builtin_assert(TXT) cpp_assert (pfile, TXT) | |
1252 | TARGET_CPU_CPP_BUILTINS (); | |
1253 | TARGET_OS_CPP_BUILTINS (); | |
4e2e315f | 1254 | TARGET_OBJFMT_CPP_BUILTINS (); |
63c5b495 MM |
1255 | |
1256 | /* Support the __declspec keyword by turning them into attributes. | |
1257 | Note that the current way we do this may result in a collision | |
1258 | with predefined attributes later on. This can be solved by using | |
1259 | one attribute, say __declspec__, and passing args to it. The | |
1260 | problem with that approach is that args are not accumulated: each | |
1261 | new appearance would clobber any existing args. */ | |
1262 | if (TARGET_DECLSPEC) | |
1263 | builtin_define ("__declspec(x)=__attribute__((x))"); | |
79b87c74 | 1264 | |
589dd995 JJ |
1265 | /* If decimal floating point is supported, tell the user if the |
1266 | alternate format (BID) is used instead of the standard (DPD) | |
1267 | format. */ | |
1268 | if (ENABLE_DECIMAL_FLOAT && ENABLE_DECIMAL_BID_FORMAT) | |
1269 | cpp_define (pfile, "__DECIMAL_BID_FORMAT__"); | |
cb60f38d NB |
1270 | } |
1271 | ||
1272 | /* Pass an object-like macro. If it doesn't lie in the user's | |
1273 | namespace, defines it unconditionally. Otherwise define a version | |
1274 | with two leading underscores, and another version with two leading | |
1275 | and trailing underscores, and define the original only if an ISO | |
1276 | standard was not nominated. | |
1277 | ||
1278 | e.g. passing "unix" defines "__unix", "__unix__" and possibly | |
1279 | "unix". Passing "_mips" defines "__mips", "__mips__" and possibly | |
1280 | "_mips". */ | |
21282b1e | 1281 | void |
35b1a6fa | 1282 | builtin_define_std (const char *macro) |
cb60f38d NB |
1283 | { |
1284 | size_t len = strlen (macro); | |
cceb1885 | 1285 | char *buff = (char *) alloca (len + 5); |
cb60f38d NB |
1286 | char *p = buff + 2; |
1287 | char *q = p + len; | |
1288 | ||
1289 | /* prepend __ (or maybe just _) if in user's namespace. */ | |
1290 | memcpy (p, macro, len + 1); | |
1291 | if (!( *p == '_' && (p[1] == '_' || ISUPPER (p[1])))) | |
1292 | { | |
1293 | if (*p != '_') | |
1294 | *--p = '_'; | |
1295 | if (p[1] != '_') | |
1296 | *--p = '_'; | |
1297 | } | |
1298 | cpp_define (parse_in, p); | |
1299 | ||
1300 | /* If it was in user's namespace... */ | |
1301 | if (p != buff + 2) | |
1302 | { | |
1303 | /* Define the macro with leading and following __. */ | |
1304 | if (q[-1] != '_') | |
1305 | *q++ = '_'; | |
1306 | if (q[-2] != '_') | |
1307 | *q++ = '_'; | |
1308 | *q = '\0'; | |
1309 | cpp_define (parse_in, p); | |
1310 | ||
1311 | /* Finally, define the original macro if permitted. */ | |
1312 | if (!flag_iso) | |
1313 | cpp_define (parse_in, macro); | |
1314 | } | |
1315 | } | |
1316 | ||
1317 | /* Pass an object-like macro and a value to define it to. The third | |
1318 | parameter says whether or not to turn the value into a string | |
1319 | constant. */ | |
1320 | void | |
35b1a6fa | 1321 | builtin_define_with_value (const char *macro, const char *expansion, int is_str) |
cb60f38d NB |
1322 | { |
1323 | char *buf; | |
1324 | size_t mlen = strlen (macro); | |
1325 | size_t elen = strlen (expansion); | |
1326 | size_t extra = 2; /* space for an = and a NUL */ | |
1327 | ||
1328 | if (is_str) | |
53d68b9f JM |
1329 | { |
1330 | char *quoted_expansion = (char *) alloca (elen * 4 + 1); | |
1331 | const char *p; | |
1332 | char *q; | |
1333 | extra += 2; /* space for two quote marks */ | |
1334 | for (p = expansion, q = quoted_expansion; *p; p++) | |
1335 | { | |
1336 | switch (*p) | |
1337 | { | |
1338 | case '\n': | |
1339 | *q++ = '\\'; | |
1340 | *q++ = 'n'; | |
1341 | break; | |
1342 | ||
1343 | case '\t': | |
1344 | *q++ = '\\'; | |
1345 | *q++ = 't'; | |
1346 | break; | |
1347 | ||
1348 | case '\\': | |
1349 | *q++ = '\\'; | |
1350 | *q++ = '\\'; | |
1351 | break; | |
1352 | ||
1353 | case '"': | |
1354 | *q++ = '\\'; | |
1355 | *q++ = '"'; | |
1356 | break; | |
1357 | ||
1358 | default: | |
1359 | if (ISPRINT ((unsigned char) *p)) | |
1360 | *q++ = *p; | |
1361 | else | |
1362 | { | |
1363 | sprintf (q, "\\%03o", (unsigned char) *p); | |
1364 | q += 4; | |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | *q = '\0'; | |
1369 | expansion = quoted_expansion; | |
1370 | elen = q - expansion; | |
1371 | } | |
cb60f38d | 1372 | |
cceb1885 | 1373 | buf = (char *) alloca (mlen + elen + extra); |
cb60f38d NB |
1374 | if (is_str) |
1375 | sprintf (buf, "%s=\"%s\"", macro, expansion); | |
1376 | else | |
1377 | sprintf (buf, "%s=%s", macro, expansion); | |
1378 | ||
1379 | cpp_define (parse_in, buf); | |
1380 | } | |
1381 | ||
cb60f38d NB |
1382 | |
1383 | /* Pass an object-like macro and an integer value to define it to. */ | |
7049e4eb | 1384 | void |
35b1a6fa | 1385 | builtin_define_with_int_value (const char *macro, HOST_WIDE_INT value) |
cb60f38d NB |
1386 | { |
1387 | char *buf; | |
1388 | size_t mlen = strlen (macro); | |
1389 | size_t vlen = 18; | |
1390 | size_t extra = 2; /* space for = and NUL. */ | |
1391 | ||
cceb1885 | 1392 | buf = (char *) alloca (mlen + vlen + extra); |
cb60f38d NB |
1393 | memcpy (buf, macro, mlen); |
1394 | buf[mlen] = '='; | |
1395 | sprintf (buf + mlen + 1, HOST_WIDE_INT_PRINT_DEC, value); | |
1396 | ||
1397 | cpp_define (parse_in, buf); | |
1398 | } | |
1399 | ||
8e680db5 JJ |
1400 | /* builtin_define_with_hex_fp_value is very expensive, so the following |
1401 | array and function allows it to be done lazily when __DBL_MAX__ | |
1402 | etc. is first used. */ | |
1403 | ||
5bca794b | 1404 | struct GTY(()) lazy_hex_fp_value_struct |
8e680db5 JJ |
1405 | { |
1406 | const char *hex_str; | |
1407 | cpp_macro *macro; | |
ef4bddc2 | 1408 | machine_mode mode; |
8e680db5 JJ |
1409 | int digits; |
1410 | const char *fp_suffix; | |
5bca794b JJ |
1411 | }; |
1412 | static GTY(()) struct lazy_hex_fp_value_struct lazy_hex_fp_values[12]; | |
1413 | static GTY(()) int lazy_hex_fp_value_count; | |
8e680db5 JJ |
1414 | |
1415 | static bool | |
1416 | lazy_hex_fp_value (cpp_reader *pfile ATTRIBUTE_UNUSED, | |
1417 | cpp_hashnode *node) | |
1418 | { | |
1419 | REAL_VALUE_TYPE real; | |
1420 | char dec_str[64], buf1[256]; | |
1421 | unsigned int idx; | |
1422 | if (node->value.builtin < BT_FIRST_USER | |
1423 | || (int) node->value.builtin >= BT_FIRST_USER + lazy_hex_fp_value_count) | |
1424 | return false; | |
1425 | ||
1426 | idx = node->value.builtin - BT_FIRST_USER; | |
1427 | real_from_string (&real, lazy_hex_fp_values[idx].hex_str); | |
1428 | real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str), | |
1429 | lazy_hex_fp_values[idx].digits, 0, | |
1430 | lazy_hex_fp_values[idx].mode); | |
1431 | ||
1432 | sprintf (buf1, "%s%s", dec_str, lazy_hex_fp_values[idx].fp_suffix); | |
1433 | node->flags &= ~(NODE_BUILTIN | NODE_USED); | |
1434 | node->value.macro = lazy_hex_fp_values[idx].macro; | |
1435 | for (idx = 0; idx < node->value.macro->count; idx++) | |
1436 | if (node->value.macro->exp.tokens[idx].type == CPP_NUMBER) | |
1437 | break; | |
1438 | gcc_assert (idx < node->value.macro->count); | |
1439 | node->value.macro->exp.tokens[idx].val.str.len = strlen (buf1); | |
1440 | node->value.macro->exp.tokens[idx].val.str.text | |
5bca794b | 1441 | = (const unsigned char *) ggc_strdup (buf1); |
8e680db5 JJ |
1442 | return true; |
1443 | } | |
1444 | ||
cb60f38d NB |
1445 | /* Pass an object-like macro a hexadecimal floating-point value. */ |
1446 | static void | |
35b1a6fa | 1447 | builtin_define_with_hex_fp_value (const char *macro, |
3e479de3 | 1448 | tree type, int digits, |
b8698a0f | 1449 | const char *hex_str, |
264c41ed CD |
1450 | const char *fp_suffix, |
1451 | const char *fp_cast) | |
cb60f38d NB |
1452 | { |
1453 | REAL_VALUE_TYPE real; | |
264c41ed | 1454 | char dec_str[64], buf1[256], buf2[256]; |
cb60f38d | 1455 | |
8e680db5 JJ |
1456 | /* This is very expensive, so if possible expand them lazily. */ |
1457 | if (lazy_hex_fp_value_count < 12 | |
1458 | && flag_dump_macros == 0 | |
1459 | && !cpp_get_options (parse_in)->traditional) | |
1460 | { | |
1461 | struct cpp_hashnode *node; | |
1462 | if (lazy_hex_fp_value_count == 0) | |
1463 | cpp_get_callbacks (parse_in)->user_builtin_macro = lazy_hex_fp_value; | |
1464 | sprintf (buf2, fp_cast, "1.1"); | |
1465 | sprintf (buf1, "%s=%s", macro, buf2); | |
1466 | cpp_define (parse_in, buf1); | |
1467 | node = C_CPP_HASHNODE (get_identifier (macro)); | |
5bca794b JJ |
1468 | lazy_hex_fp_values[lazy_hex_fp_value_count].hex_str |
1469 | = ggc_strdup (hex_str); | |
8e680db5 JJ |
1470 | lazy_hex_fp_values[lazy_hex_fp_value_count].mode = TYPE_MODE (type); |
1471 | lazy_hex_fp_values[lazy_hex_fp_value_count].digits = digits; | |
1472 | lazy_hex_fp_values[lazy_hex_fp_value_count].fp_suffix = fp_suffix; | |
1473 | lazy_hex_fp_values[lazy_hex_fp_value_count].macro = node->value.macro; | |
1474 | node->flags |= NODE_BUILTIN; | |
b49cf425 JR |
1475 | node->value.builtin |
1476 | = (enum cpp_builtin_type) (BT_FIRST_USER + lazy_hex_fp_value_count); | |
8e680db5 JJ |
1477 | lazy_hex_fp_value_count++; |
1478 | return; | |
1479 | } | |
1480 | ||
cb60f38d NB |
1481 | /* Hex values are really cool and convenient, except that they're |
1482 | not supported in strict ISO C90 mode. First, the "p-" sequence | |
1483 | is not valid as part of a preprocessor number. Second, we get a | |
1484 | pedwarn from the preprocessor, which has no context, so we can't | |
1485 | suppress the warning with __extension__. | |
1486 | ||
35b1a6fa | 1487 | So instead what we do is construct the number in hex (because |
cb60f38d NB |
1488 | it's easy to get the exact correct value), parse it as a real, |
1489 | then print it back out as decimal. */ | |
1490 | ||
1491 | real_from_string (&real, hex_str); | |
3e479de3 UW |
1492 | real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str), digits, 0, |
1493 | TYPE_MODE (type)); | |
cb60f38d | 1494 | |
264c41ed CD |
1495 | /* Assemble the macro in the following fashion |
1496 | macro = fp_cast [dec_str fp_suffix] */ | |
1497 | sprintf (buf1, "%s%s", dec_str, fp_suffix); | |
1498 | sprintf (buf2, fp_cast, buf1); | |
1499 | sprintf (buf1, "%s=%s", macro, buf2); | |
b8698a0f | 1500 | |
264c41ed | 1501 | cpp_define (parse_in, buf1); |
cb60f38d NB |
1502 | } |
1503 | ||
207bf79d JM |
1504 | /* Return a string constant for the suffix for a value of type TYPE |
1505 | promoted according to the integer promotions. The type must be one | |
1506 | of the standard integer type nodes. */ | |
1507 | ||
1508 | static const char * | |
1509 | type_suffix (tree type) | |
1510 | { | |
1511 | static const char *const suffixes[] = { "", "U", "L", "UL", "LL", "ULL" }; | |
1512 | int unsigned_suffix; | |
1513 | int is_long; | |
78a7c317 | 1514 | int tp = TYPE_PRECISION (type); |
207bf79d JM |
1515 | |
1516 | if (type == long_long_integer_type_node | |
78a7c317 DD |
1517 | || type == long_long_unsigned_type_node |
1518 | || tp > TYPE_PRECISION (long_integer_type_node)) | |
207bf79d JM |
1519 | is_long = 2; |
1520 | else if (type == long_integer_type_node | |
78a7c317 DD |
1521 | || type == long_unsigned_type_node |
1522 | || tp > TYPE_PRECISION (integer_type_node)) | |
207bf79d JM |
1523 | is_long = 1; |
1524 | else if (type == integer_type_node | |
1525 | || type == unsigned_type_node | |
1526 | || type == short_integer_type_node | |
1527 | || type == short_unsigned_type_node | |
1528 | || type == signed_char_type_node | |
1529 | || type == unsigned_char_type_node | |
1530 | /* ??? "char" is not a signed or unsigned integer type and | |
1531 | so is not permitted for the standard typedefs, but some | |
1532 | systems use it anyway. */ | |
1533 | || type == char_type_node) | |
1534 | is_long = 0; | |
1535 | else | |
1536 | gcc_unreachable (); | |
1537 | ||
1538 | unsigned_suffix = TYPE_UNSIGNED (type); | |
1539 | if (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)) | |
1540 | unsigned_suffix = 0; | |
1541 | return suffixes[is_long * 2 + unsigned_suffix]; | |
1542 | } | |
1543 | ||
1544 | /* Define MACRO as a <stdint.h> constant-suffix macro for TYPE. */ | |
1545 | static void | |
1546 | builtin_define_constants (const char *macro, tree type) | |
1547 | { | |
1548 | const char *suffix; | |
1549 | char *buf; | |
1550 | ||
1551 | suffix = type_suffix (type); | |
1552 | ||
1553 | if (suffix[0] == 0) | |
1554 | { | |
1555 | buf = (char *) alloca (strlen (macro) + 6); | |
1556 | sprintf (buf, "%s(c)=c", macro); | |
1557 | } | |
1558 | else | |
1559 | { | |
1560 | buf = (char *) alloca (strlen (macro) + 9 + strlen (suffix) + 1); | |
1561 | sprintf (buf, "%s(c)=c ## %s", macro, suffix); | |
1562 | } | |
1563 | ||
1564 | cpp_define (parse_in, buf); | |
1565 | } | |
1566 | ||
1567 | /* Define MAX for TYPE based on the precision of the type. */ | |
1568 | ||
1569 | static void | |
1570 | builtin_define_type_max (const char *macro, tree type) | |
1571 | { | |
1572 | builtin_define_type_minmax (NULL, macro, type); | |
1573 | } | |
1574 | ||
ca49b74e DD |
1575 | /* Given a value with COUNT LSBs set, fill BUF with a hexidecimal |
1576 | representation of that value. For example, a COUNT of 10 would | |
1577 | return "0x3ff". */ | |
1578 | ||
1579 | static void | |
1580 | print_bits_of_hex (char *buf, int bufsz, int count) | |
1581 | { | |
1582 | gcc_assert (bufsz > 3); | |
1583 | *buf++ = '0'; | |
1584 | *buf++ = 'x'; | |
1585 | bufsz -= 2; | |
1586 | ||
1587 | gcc_assert (count > 0); | |
1588 | ||
1589 | switch (count % 4) { | |
1590 | case 0: | |
1591 | break; | |
1592 | case 1: | |
1593 | *buf++ = '1'; | |
1594 | bufsz --; | |
1595 | count -= 1; | |
1596 | break; | |
1597 | case 2: | |
1598 | *buf++ = '3'; | |
1599 | bufsz --; | |
1600 | count -= 2; | |
1601 | break; | |
1602 | case 3: | |
1603 | *buf++ = '7'; | |
1604 | bufsz --; | |
1605 | count -= 3; | |
1606 | break; | |
1607 | } | |
1608 | while (count >= 4) | |
1609 | { | |
1610 | gcc_assert (bufsz > 1); | |
1611 | *buf++ = 'f'; | |
1612 | bufsz --; | |
1613 | count -= 4; | |
1614 | } | |
1615 | gcc_assert (bufsz > 0); | |
1616 | *buf++ = 0; | |
1617 | } | |
1618 | ||
207bf79d JM |
1619 | /* Define MIN_MACRO (if not NULL) and MAX_MACRO for TYPE based on the |
1620 | precision of the type. */ | |
cb60f38d NB |
1621 | |
1622 | static void | |
207bf79d JM |
1623 | builtin_define_type_minmax (const char *min_macro, const char *max_macro, |
1624 | tree type) | |
cb60f38d | 1625 | { |
ca49b74e DD |
1626 | #define PBOH_SZ (MAX_BITSIZE_MODE_ANY_INT/4+4) |
1627 | char value[PBOH_SZ]; | |
1628 | ||
1629 | const char *suffix; | |
cb60f38d | 1630 | char *buf; |
ca49b74e | 1631 | int bits; |
cb60f38d | 1632 | |
ca49b74e DD |
1633 | bits = TYPE_PRECISION (type) + (TYPE_UNSIGNED (type) ? 0 : -1); |
1634 | ||
1635 | print_bits_of_hex (value, PBOH_SZ, bits); | |
cb60f38d | 1636 | |
207bf79d | 1637 | suffix = type_suffix (type); |
cb60f38d | 1638 | |
207bf79d | 1639 | buf = (char *) alloca (strlen (max_macro) + 1 + strlen (value) |
cceb1885 | 1640 | + strlen (suffix) + 1); |
207bf79d | 1641 | sprintf (buf, "%s=%s%s", max_macro, value, suffix); |
cb60f38d NB |
1642 | |
1643 | cpp_define (parse_in, buf); | |
207bf79d JM |
1644 | |
1645 | if (min_macro) | |
1646 | { | |
1647 | if (TYPE_UNSIGNED (type)) | |
1648 | { | |
1649 | buf = (char *) alloca (strlen (min_macro) + 2 + strlen (suffix) + 1); | |
1650 | sprintf (buf, "%s=0%s", min_macro, suffix); | |
1651 | } | |
1652 | else | |
1653 | { | |
1654 | buf = (char *) alloca (strlen (min_macro) + 3 | |
1655 | + strlen (max_macro) + 6); | |
1656 | sprintf (buf, "%s=(-%s - 1)", min_macro, max_macro); | |
1657 | } | |
1658 | cpp_define (parse_in, buf); | |
1659 | } | |
cb60f38d | 1660 | } |
5bca794b JJ |
1661 | |
1662 | #include "gt-c-family-c-cppbuiltin.h" |