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cb60f38d | 1 | /* Define builtin-in macros for the C family front ends. |
7adcbafe | 2 | Copyright (C) 2002-2022 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 | 24 | #include "c-common.h" |
4d0cdd0c | 25 | #include "memmodel.h" |
2adfab87 | 26 | #include "tm_p.h" /* For TARGET_CPU_CPP_BUILTINS & friends. */ |
d8a2d370 | 27 | #include "stringpool.h" |
2adfab87 | 28 | #include "stor-layout.h" |
cb60f38d | 29 | #include "flags.h" |
cb60f38d | 30 | #include "c-pragma.h" |
a4b7d13c | 31 | #include "output.h" /* For user_label_prefix. */ |
f4ce02c5 | 32 | #include "debug.h" /* For dwarf2out_do_cfi_asm. */ |
677f3fa8 | 33 | #include "common/common-target.h" |
82a1c2fe | 34 | #include "cppbuiltin.h" |
1d9a8675 | 35 | #include "configargs.h" |
cb60f38d | 36 | |
4e2e315f NB |
37 | #ifndef TARGET_OS_CPP_BUILTINS |
38 | # define TARGET_OS_CPP_BUILTINS() | |
39 | #endif | |
40 | ||
41 | #ifndef TARGET_OBJFMT_CPP_BUILTINS | |
42 | # define TARGET_OBJFMT_CPP_BUILTINS() | |
43 | #endif | |
44 | ||
cb60f38d NB |
45 | #ifndef REGISTER_PREFIX |
46 | #define REGISTER_PREFIX "" | |
47 | #endif | |
48 | ||
21282b1e | 49 | /* Non-static as some targets don't use it. */ |
35b1a6fa AJ |
50 | static void builtin_define_with_hex_fp_value (const char *, tree, |
51 | int, const char *, | |
264c41ed | 52 | const char *, |
35b1a6fa | 53 | const char *); |
85291069 | 54 | static void builtin_define_stdint_macros (void); |
207bf79d JM |
55 | static void builtin_define_constants (const char *, tree); |
56 | static void builtin_define_type_max (const char *, tree); | |
57 | static void builtin_define_type_minmax (const char *, const char *, tree); | |
c65248cb | 58 | static void builtin_define_type_width (const char *, tree, tree); |
b8698a0f | 59 | static void builtin_define_float_constants (const char *, |
1b1562a5 | 60 | const char *, |
264c41ed CD |
61 | const char *, |
62 | const char *, | |
35b1a6fa | 63 | tree); |
cb60f38d | 64 | |
0069111f MM |
65 | /* Return true if MODE provides a fast multiply/add (FMA) builtin function. |
66 | Originally this function used the fma optab, but that doesn't work with | |
67 | -save-temps, so just rely on the HAVE_fma macros for the standard floating | |
68 | point types. */ | |
69 | ||
70 | static bool | |
ef4bddc2 | 71 | mode_has_fma (machine_mode mode) |
0069111f MM |
72 | { |
73 | switch (mode) | |
74 | { | |
75 | #ifdef HAVE_fmasf4 | |
4e10a5a7 | 76 | case E_SFmode: |
0069111f MM |
77 | return !!HAVE_fmasf4; |
78 | #endif | |
79 | ||
80 | #ifdef HAVE_fmadf4 | |
4e10a5a7 | 81 | case E_DFmode: |
0069111f MM |
82 | return !!HAVE_fmadf4; |
83 | #endif | |
84 | ||
ee5fd23a MM |
85 | #ifdef HAVE_fmakf4 /* PowerPC if long double != __float128. */ |
86 | case E_KFmode: | |
87 | return !!HAVE_fmakf4; | |
88 | #endif | |
89 | ||
0069111f | 90 | #ifdef HAVE_fmaxf4 |
4e10a5a7 | 91 | case E_XFmode: |
0069111f MM |
92 | return !!HAVE_fmaxf4; |
93 | #endif | |
94 | ||
95 | #ifdef HAVE_fmatf4 | |
4e10a5a7 | 96 | case E_TFmode: |
0069111f MM |
97 | return !!HAVE_fmatf4; |
98 | #endif | |
99 | ||
100 | default: | |
101 | break; | |
102 | } | |
103 | ||
104 | return false; | |
105 | } | |
106 | ||
024a85ae | 107 | /* Define NAME with value TYPE size_unit. */ |
7049e4eb | 108 | void |
024a85ae AK |
109 | builtin_define_type_sizeof (const char *name, tree type) |
110 | { | |
111 | builtin_define_with_int_value (name, | |
ae7e9ddd | 112 | tree_to_uhwi (TYPE_SIZE_UNIT (type))); |
024a85ae AK |
113 | } |
114 | ||
264c41ed CD |
115 | /* Define the float.h constants for TYPE using NAME_PREFIX, FP_SUFFIX, |
116 | and FP_CAST. */ | |
cb60f38d | 117 | static void |
b8698a0f L |
118 | builtin_define_float_constants (const char *name_prefix, |
119 | const char *fp_suffix, | |
120 | const char *fp_cast, | |
1b1562a5 | 121 | const char *fma_suffix, |
264c41ed | 122 | tree type) |
cb60f38d NB |
123 | { |
124 | /* Used to convert radix-based values to base 10 values in several cases. | |
125 | ||
126 | In the max_exp -> max_10_exp conversion for 128-bit IEEE, we need at | |
127 | least 6 significant digits for correct results. Using the fraction | |
128 | formed by (log(2)*1e6)/(log(10)*1e6) overflows a 32-bit integer as an | |
129 | intermediate; perhaps someone can find a better approximation, in the | |
130 | mean time, I suspect using doubles won't harm the bootstrap here. */ | |
131 | ||
132 | const double log10_2 = .30102999566398119521; | |
133 | double log10_b; | |
134 | const struct real_format *fmt; | |
c65699ef | 135 | const struct real_format *widefmt; |
cb60f38d NB |
136 | |
137 | char name[64], buf[128]; | |
138 | int dig, min_10_exp, max_10_exp; | |
139 | int decimal_dig; | |
2778d766 | 140 | int type_decimal_dig; |
cb60f38d | 141 | |
70a01792 | 142 | fmt = REAL_MODE_FORMAT (TYPE_MODE (type)); |
9a8ce21f | 143 | gcc_assert (fmt->b != 10); |
c65699ef JM |
144 | widefmt = REAL_MODE_FORMAT (TYPE_MODE (long_double_type_node)); |
145 | gcc_assert (widefmt->b != 10); | |
146 | for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++) | |
147 | { | |
148 | tree wtype = FLOATN_NX_TYPE_NODE (i); | |
149 | if (wtype != NULL_TREE) | |
150 | { | |
151 | const struct real_format *wfmt | |
152 | = REAL_MODE_FORMAT (TYPE_MODE (wtype)); | |
153 | gcc_assert (wfmt->b != 10); | |
154 | if (wfmt->p > widefmt->p) | |
155 | widefmt = wfmt; | |
156 | } | |
157 | } | |
cb60f38d NB |
158 | |
159 | /* The radix of the exponent representation. */ | |
160 | if (type == float_type_node) | |
161 | builtin_define_with_int_value ("__FLT_RADIX__", fmt->b); | |
4d8a8a0a | 162 | log10_b = log10_2; |
cb60f38d NB |
163 | |
164 | /* The number of radix digits, p, in the floating-point significand. */ | |
165 | sprintf (name, "__%s_MANT_DIG__", name_prefix); | |
166 | builtin_define_with_int_value (name, fmt->p); | |
167 | ||
168 | /* The number of decimal digits, q, such that any floating-point number | |
169 | with q decimal digits can be rounded into a floating-point number with | |
170 | p radix b digits and back again without change to the q decimal digits, | |
171 | ||
172 | p log10 b if b is a power of 10 | |
35b1a6fa | 173 | floor((p - 1) log10 b) otherwise |
cb60f38d NB |
174 | */ |
175 | dig = (fmt->p - 1) * log10_b; | |
176 | sprintf (name, "__%s_DIG__", name_prefix); | |
177 | builtin_define_with_int_value (name, dig); | |
178 | ||
179 | /* The minimum negative int x such that b**(x-1) is a normalized float. */ | |
180 | sprintf (name, "__%s_MIN_EXP__", name_prefix); | |
181 | sprintf (buf, "(%d)", fmt->emin); | |
182 | builtin_define_with_value (name, buf, 0); | |
183 | ||
184 | /* The minimum negative int x such that 10**x is a normalized float, | |
185 | ||
186 | ceil (log10 (b ** (emin - 1))) | |
187 | = ceil (log10 (b) * (emin - 1)) | |
188 | ||
189 | Recall that emin is negative, so the integer truncation calculates | |
190 | the ceiling, not the floor, in this case. */ | |
191 | min_10_exp = (fmt->emin - 1) * log10_b; | |
192 | sprintf (name, "__%s_MIN_10_EXP__", name_prefix); | |
193 | sprintf (buf, "(%d)", min_10_exp); | |
194 | builtin_define_with_value (name, buf, 0); | |
195 | ||
196 | /* The maximum int x such that b**(x-1) is a representable float. */ | |
197 | sprintf (name, "__%s_MAX_EXP__", name_prefix); | |
198 | builtin_define_with_int_value (name, fmt->emax); | |
199 | ||
200 | /* The maximum int x such that 10**x is in the range of representable | |
201 | finite floating-point numbers, | |
202 | ||
203 | floor (log10((1 - b**-p) * b**emax)) | |
204 | = floor (log10(1 - b**-p) + log10(b**emax)) | |
205 | = floor (log10(1 - b**-p) + log10(b)*emax) | |
206 | ||
207 | The safest thing to do here is to just compute this number. But since | |
208 | we don't link cc1 with libm, we cannot. We could implement log10 here | |
209 | a series expansion, but that seems too much effort because: | |
210 | ||
211 | Note that the first term, for all extant p, is a number exceedingly close | |
212 | to zero, but slightly negative. Note that the second term is an integer | |
213 | scaling an irrational number, and that because of the floor we are only | |
214 | interested in its integral portion. | |
215 | ||
216 | In order for the first term to have any effect on the integral portion | |
217 | of the second term, the second term has to be exceedingly close to an | |
218 | integer itself (e.g. 123.000000000001 or something). Getting a result | |
219 | that close to an integer requires that the irrational multiplicand have | |
220 | a long series of zeros in its expansion, which doesn't occur in the | |
221 | first 20 digits or so of log10(b). | |
222 | ||
223 | Hand-waving aside, crunching all of the sets of constants above by hand | |
224 | does not yield a case for which the first term is significant, which | |
225 | in the end is all that matters. */ | |
226 | max_10_exp = fmt->emax * log10_b; | |
227 | sprintf (name, "__%s_MAX_10_EXP__", name_prefix); | |
228 | builtin_define_with_int_value (name, max_10_exp); | |
229 | ||
230 | /* The number of decimal digits, n, such that any floating-point number | |
231 | can be rounded to n decimal digits and back again without change to | |
35b1a6fa | 232 | the value. |
cb60f38d NB |
233 | |
234 | p * log10(b) if b is a power of 10 | |
235 | ceil(1 + p * log10(b)) otherwise | |
236 | ||
237 | The only macro we care about is this number for the widest supported | |
238 | floating type, but we want this value for rendering constants below. */ | |
239 | { | |
8ce94e44 | 240 | double d_decimal_dig |
c65699ef | 241 | = 1 + (fmt->p < widefmt->p ? widefmt->p : fmt->p) * log10_b; |
cb60f38d NB |
242 | decimal_dig = d_decimal_dig; |
243 | if (decimal_dig < d_decimal_dig) | |
244 | decimal_dig++; | |
245 | } | |
2778d766 JM |
246 | /* Similar, for this type rather than long double. */ |
247 | { | |
248 | double type_d_decimal_dig = 1 + fmt->p * log10_b; | |
249 | type_decimal_dig = type_d_decimal_dig; | |
250 | if (type_decimal_dig < type_d_decimal_dig) | |
251 | type_decimal_dig++; | |
252 | } | |
97fcf744 JM |
253 | /* Define __DECIMAL_DIG__ to the value for long double to be |
254 | compatible with C99 and C11; see DR#501 and N2108. */ | |
cb60f38d | 255 | if (type == long_double_type_node) |
97fcf744 | 256 | builtin_define_with_int_value ("__DECIMAL_DIG__", type_decimal_dig); |
c65699ef JM |
257 | sprintf (name, "__%s_DECIMAL_DIG__", name_prefix); |
258 | builtin_define_with_int_value (name, type_decimal_dig); | |
cb60f38d NB |
259 | |
260 | /* Since, for the supported formats, B is always a power of 2, we | |
261 | construct the following numbers directly as a hexadecimal | |
262 | constants. */ | |
00be2a5f | 263 | get_max_float (fmt, buf, sizeof (buf), false); |
b8698a0f | 264 | |
cb60f38d | 265 | sprintf (name, "__%s_MAX__", name_prefix); |
264c41ed | 266 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d | 267 | |
00be2a5f JM |
268 | get_max_float (fmt, buf, sizeof (buf), true); |
269 | ||
270 | sprintf (name, "__%s_NORM_MAX__", name_prefix); | |
271 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); | |
272 | ||
cb60f38d NB |
273 | /* The minimum normalized positive floating-point number, |
274 | b**(emin-1). */ | |
275 | sprintf (name, "__%s_MIN__", name_prefix); | |
4d8a8a0a | 276 | sprintf (buf, "0x1p%d", fmt->emin - 1); |
264c41ed | 277 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d NB |
278 | |
279 | /* The difference between 1 and the least value greater than 1 that is | |
280 | representable in the given floating point type, b**(1-p). */ | |
281 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
59d7d767 GK |
282 | if (fmt->pnan < fmt->p) |
283 | /* This is an IBM extended double format, so 1.0 + any double is | |
284 | representable precisely. */ | |
4d8a8a0a | 285 | sprintf (buf, "0x1p%d", fmt->emin - fmt->p); |
c22cacf3 | 286 | else |
4d8a8a0a | 287 | sprintf (buf, "0x1p%d", 1 - fmt->p); |
264c41ed | 288 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d | 289 | |
179b5a55 MG |
290 | /* For C++ std::numeric_limits<T>::denorm_min and C11 *_TRUE_MIN. |
291 | The minimum denormalized positive floating-point number, b**(emin-p). | |
292 | The minimum normalized positive floating-point number for formats | |
293 | that don't support denormals. */ | |
cb60f38d | 294 | sprintf (name, "__%s_DENORM_MIN__", name_prefix); |
179b5a55 MG |
295 | sprintf (buf, "0x1p%d", fmt->emin - (fmt->has_denorm ? fmt->p : 1)); |
296 | builtin_define_with_hex_fp_value (name, type, decimal_dig, | |
297 | buf, fp_suffix, fp_cast); | |
cb60f38d | 298 | |
264c41ed CD |
299 | sprintf (name, "__%s_HAS_DENORM__", name_prefix); |
300 | builtin_define_with_value (name, fmt->has_denorm ? "1" : "0", 0); | |
301 | ||
cb60f38d NB |
302 | /* For C++ std::numeric_limits<T>::has_infinity. */ |
303 | sprintf (name, "__%s_HAS_INFINITY__", name_prefix); | |
35b1a6fa | 304 | builtin_define_with_int_value (name, |
cb60f38d NB |
305 | MODE_HAS_INFINITIES (TYPE_MODE (type))); |
306 | /* For C++ std::numeric_limits<T>::has_quiet_NaN. We do not have a | |
307 | predicate to distinguish a target that has both quiet and | |
308 | signalling NaNs from a target that has only quiet NaNs or only | |
309 | signalling NaNs, so we assume that a target that has any kind of | |
310 | NaN has quiet NaNs. */ | |
311 | sprintf (name, "__%s_HAS_QUIET_NAN__", name_prefix); | |
312 | builtin_define_with_int_value (name, MODE_HAS_NANS (TYPE_MODE (type))); | |
1b1562a5 MM |
313 | |
314 | /* Note whether we have fast FMA. */ | |
c65699ef | 315 | if (mode_has_fma (TYPE_MODE (type)) && fma_suffix != NULL) |
1b1562a5 MM |
316 | { |
317 | sprintf (name, "__FP_FAST_FMA%s", fma_suffix); | |
318 | builtin_define_with_int_value (name, 1); | |
319 | } | |
ac30c8b8 JM |
320 | |
321 | /* For C2x *_IS_IEC_60559. 0 means the type does not match an IEC | |
322 | 60559 format, 1 that it matches a format but not operations and 2 | |
323 | that it matches a format and operations (but may not conform to | |
324 | Annex F; we take this as meaning exceptions and rounding modes | |
325 | need not be supported). */ | |
326 | sprintf (name, "__%s_IS_IEC_60559__", name_prefix); | |
327 | builtin_define_with_int_value (name, | |
328 | (fmt->ieee_bits == 0 | |
329 | ? 0 : (fmt->round_towards_zero ? 1 : 2))); | |
cb60f38d NB |
330 | } |
331 | ||
9a8ce21f JG |
332 | /* Define __DECx__ constants for TYPE using NAME_PREFIX and SUFFIX. */ |
333 | static void | |
b8698a0f L |
334 | builtin_define_decimal_float_constants (const char *name_prefix, |
335 | const char *suffix, | |
9a8ce21f JG |
336 | tree type) |
337 | { | |
338 | const struct real_format *fmt; | |
339 | char name[64], buf[128], *p; | |
340 | int digits; | |
341 | ||
342 | fmt = REAL_MODE_FORMAT (TYPE_MODE (type)); | |
343 | ||
344 | /* The number of radix digits, p, in the significand. */ | |
345 | sprintf (name, "__%s_MANT_DIG__", name_prefix); | |
346 | builtin_define_with_int_value (name, fmt->p); | |
347 | ||
348 | /* The minimum negative int x such that b**(x-1) is a normalized float. */ | |
349 | sprintf (name, "__%s_MIN_EXP__", name_prefix); | |
350 | sprintf (buf, "(%d)", fmt->emin); | |
351 | builtin_define_with_value (name, buf, 0); | |
352 | ||
353 | /* The maximum int x such that b**(x-1) is a representable float. */ | |
354 | sprintf (name, "__%s_MAX_EXP__", name_prefix); | |
355 | builtin_define_with_int_value (name, fmt->emax); | |
356 | ||
357 | /* Compute the minimum representable value. */ | |
358 | sprintf (name, "__%s_MIN__", name_prefix); | |
c52ec948 | 359 | sprintf (buf, "1E%d%s", fmt->emin - 1, suffix); |
b8698a0f | 360 | builtin_define_with_value (name, buf, 0); |
9a8ce21f JG |
361 | |
362 | /* Compute the maximum representable value. */ | |
363 | sprintf (name, "__%s_MAX__", name_prefix); | |
364 | p = buf; | |
365 | for (digits = fmt->p; digits; digits--) | |
366 | { | |
367 | *p++ = '9'; | |
368 | if (digits == fmt->p) | |
369 | *p++ = '.'; | |
370 | } | |
371 | *p = 0; | |
c52ec948 JJ |
372 | /* fmt->p plus 1, to account for the decimal point and fmt->emax |
373 | minus 1 because the digits are nines, not 1.0. */ | |
b8698a0f | 374 | sprintf (&buf[fmt->p + 1], "E%d%s", fmt->emax - 1, suffix); |
9a8ce21f JG |
375 | builtin_define_with_value (name, buf, 0); |
376 | ||
377 | /* Compute epsilon (the difference between 1 and least value greater | |
378 | than 1 representable). */ | |
379 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
380 | sprintf (buf, "1E-%d%s", fmt->p - 1, suffix); | |
381 | builtin_define_with_value (name, buf, 0); | |
382 | ||
c52ec948 JJ |
383 | /* Minimum subnormal positive decimal value. */ |
384 | sprintf (name, "__%s_SUBNORMAL_MIN__", name_prefix); | |
9a8ce21f JG |
385 | p = buf; |
386 | for (digits = fmt->p; digits > 1; digits--) | |
387 | { | |
388 | *p++ = '0'; | |
389 | if (digits == fmt->p) | |
390 | *p++ = '.'; | |
391 | } | |
392 | *p = 0; | |
b8698a0f | 393 | sprintf (&buf[fmt->p], "1E%d%s", fmt->emin - 1, suffix); |
9a8ce21f JG |
394 | builtin_define_with_value (name, buf, 0); |
395 | } | |
396 | ||
0f996086 CF |
397 | /* Define fixed-point constants for TYPE using NAME_PREFIX and SUFFIX. */ |
398 | ||
399 | static void | |
400 | builtin_define_fixed_point_constants (const char *name_prefix, | |
401 | const char *suffix, | |
402 | tree type) | |
403 | { | |
404 | char name[64], buf[256], *new_buf; | |
405 | int i, mod; | |
406 | ||
407 | sprintf (name, "__%s_FBIT__", name_prefix); | |
408 | builtin_define_with_int_value (name, TYPE_FBIT (type)); | |
409 | ||
410 | sprintf (name, "__%s_IBIT__", name_prefix); | |
411 | builtin_define_with_int_value (name, TYPE_IBIT (type)); | |
412 | ||
413 | /* If there is no suffix, defines are for fixed-point modes. | |
414 | We just return. */ | |
415 | if (strcmp (suffix, "") == 0) | |
416 | return; | |
417 | ||
418 | if (TYPE_UNSIGNED (type)) | |
419 | { | |
420 | sprintf (name, "__%s_MIN__", name_prefix); | |
421 | sprintf (buf, "0.0%s", suffix); | |
422 | builtin_define_with_value (name, buf, 0); | |
423 | } | |
424 | else | |
425 | { | |
426 | sprintf (name, "__%s_MIN__", name_prefix); | |
427 | if (ALL_ACCUM_MODE_P (TYPE_MODE (type))) | |
428 | sprintf (buf, "(-0X1P%d%s-0X1P%d%s)", TYPE_IBIT (type) - 1, suffix, | |
429 | TYPE_IBIT (type) - 1, suffix); | |
430 | else | |
431 | sprintf (buf, "(-0.5%s-0.5%s)", suffix, suffix); | |
432 | builtin_define_with_value (name, buf, 0); | |
433 | } | |
434 | ||
435 | sprintf (name, "__%s_MAX__", name_prefix); | |
436 | sprintf (buf, "0X"); | |
437 | new_buf = buf + 2; | |
438 | mod = (TYPE_FBIT (type) + TYPE_IBIT (type)) % 4; | |
439 | if (mod) | |
440 | sprintf (new_buf++, "%x", (1 << mod) - 1); | |
441 | for (i = 0; i < (TYPE_FBIT (type) + TYPE_IBIT (type)) / 4; i++) | |
442 | sprintf (new_buf++, "F"); | |
443 | sprintf (new_buf, "P-%d%s", TYPE_FBIT (type), suffix); | |
444 | builtin_define_with_value (name, buf, 0); | |
445 | ||
446 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
447 | sprintf (buf, "0x1P-%d%s", TYPE_FBIT (type), suffix); | |
448 | builtin_define_with_value (name, buf, 0); | |
449 | } | |
450 | ||
207bf79d | 451 | /* Define macros used by <stdint.h>. */ |
85291069 JM |
452 | static void |
453 | builtin_define_stdint_macros (void) | |
454 | { | |
207bf79d JM |
455 | builtin_define_type_max ("__INTMAX_MAX__", intmax_type_node); |
456 | builtin_define_constants ("__INTMAX_C", intmax_type_node); | |
457 | builtin_define_type_max ("__UINTMAX_MAX__", uintmax_type_node); | |
458 | builtin_define_constants ("__UINTMAX_C", uintmax_type_node); | |
c65248cb JM |
459 | builtin_define_type_width ("__INTMAX_WIDTH__", intmax_type_node, |
460 | uintmax_type_node); | |
207bf79d | 461 | if (sig_atomic_type_node) |
c65248cb JM |
462 | { |
463 | builtin_define_type_minmax ("__SIG_ATOMIC_MIN__", "__SIG_ATOMIC_MAX__", | |
464 | sig_atomic_type_node); | |
465 | builtin_define_type_width ("__SIG_ATOMIC_WIDTH__", sig_atomic_type_node, | |
466 | NULL_TREE); | |
467 | } | |
207bf79d JM |
468 | if (int8_type_node) |
469 | builtin_define_type_max ("__INT8_MAX__", int8_type_node); | |
470 | if (int16_type_node) | |
471 | builtin_define_type_max ("__INT16_MAX__", int16_type_node); | |
472 | if (int32_type_node) | |
473 | builtin_define_type_max ("__INT32_MAX__", int32_type_node); | |
474 | if (int64_type_node) | |
475 | builtin_define_type_max ("__INT64_MAX__", int64_type_node); | |
476 | if (uint8_type_node) | |
477 | builtin_define_type_max ("__UINT8_MAX__", uint8_type_node); | |
ac868f29 EB |
478 | if (c_uint16_type_node) |
479 | builtin_define_type_max ("__UINT16_MAX__", c_uint16_type_node); | |
207bf79d JM |
480 | if (c_uint32_type_node) |
481 | builtin_define_type_max ("__UINT32_MAX__", c_uint32_type_node); | |
482 | if (c_uint64_type_node) | |
483 | builtin_define_type_max ("__UINT64_MAX__", c_uint64_type_node); | |
484 | if (int_least8_type_node) | |
485 | { | |
486 | builtin_define_type_max ("__INT_LEAST8_MAX__", int_least8_type_node); | |
487 | builtin_define_constants ("__INT8_C", int_least8_type_node); | |
c65248cb JM |
488 | builtin_define_type_width ("__INT_LEAST8_WIDTH__", int_least8_type_node, |
489 | uint_least8_type_node); | |
207bf79d JM |
490 | } |
491 | if (int_least16_type_node) | |
492 | { | |
493 | builtin_define_type_max ("__INT_LEAST16_MAX__", int_least16_type_node); | |
494 | builtin_define_constants ("__INT16_C", int_least16_type_node); | |
c65248cb JM |
495 | builtin_define_type_width ("__INT_LEAST16_WIDTH__", |
496 | int_least16_type_node, | |
497 | uint_least16_type_node); | |
207bf79d JM |
498 | } |
499 | if (int_least32_type_node) | |
500 | { | |
501 | builtin_define_type_max ("__INT_LEAST32_MAX__", int_least32_type_node); | |
502 | builtin_define_constants ("__INT32_C", int_least32_type_node); | |
c65248cb JM |
503 | builtin_define_type_width ("__INT_LEAST32_WIDTH__", |
504 | int_least32_type_node, | |
505 | uint_least32_type_node); | |
207bf79d JM |
506 | } |
507 | if (int_least64_type_node) | |
508 | { | |
509 | builtin_define_type_max ("__INT_LEAST64_MAX__", int_least64_type_node); | |
510 | builtin_define_constants ("__INT64_C", int_least64_type_node); | |
c65248cb JM |
511 | builtin_define_type_width ("__INT_LEAST64_WIDTH__", |
512 | int_least64_type_node, | |
513 | uint_least64_type_node); | |
207bf79d JM |
514 | } |
515 | if (uint_least8_type_node) | |
516 | { | |
517 | builtin_define_type_max ("__UINT_LEAST8_MAX__", uint_least8_type_node); | |
518 | builtin_define_constants ("__UINT8_C", uint_least8_type_node); | |
519 | } | |
520 | if (uint_least16_type_node) | |
521 | { | |
522 | builtin_define_type_max ("__UINT_LEAST16_MAX__", uint_least16_type_node); | |
523 | builtin_define_constants ("__UINT16_C", uint_least16_type_node); | |
524 | } | |
525 | if (uint_least32_type_node) | |
526 | { | |
527 | builtin_define_type_max ("__UINT_LEAST32_MAX__", uint_least32_type_node); | |
528 | builtin_define_constants ("__UINT32_C", uint_least32_type_node); | |
529 | } | |
530 | if (uint_least64_type_node) | |
531 | { | |
532 | builtin_define_type_max ("__UINT_LEAST64_MAX__", uint_least64_type_node); | |
533 | builtin_define_constants ("__UINT64_C", uint_least64_type_node); | |
534 | } | |
535 | if (int_fast8_type_node) | |
c65248cb JM |
536 | { |
537 | builtin_define_type_max ("__INT_FAST8_MAX__", int_fast8_type_node); | |
538 | builtin_define_type_width ("__INT_FAST8_WIDTH__", int_fast8_type_node, | |
539 | uint_fast8_type_node); | |
540 | } | |
207bf79d | 541 | if (int_fast16_type_node) |
c65248cb JM |
542 | { |
543 | builtin_define_type_max ("__INT_FAST16_MAX__", int_fast16_type_node); | |
544 | builtin_define_type_width ("__INT_FAST16_WIDTH__", int_fast16_type_node, | |
545 | uint_fast16_type_node); | |
546 | } | |
207bf79d | 547 | if (int_fast32_type_node) |
c65248cb JM |
548 | { |
549 | builtin_define_type_max ("__INT_FAST32_MAX__", int_fast32_type_node); | |
550 | builtin_define_type_width ("__INT_FAST32_WIDTH__", int_fast32_type_node, | |
551 | uint_fast32_type_node); | |
552 | } | |
207bf79d | 553 | if (int_fast64_type_node) |
c65248cb JM |
554 | { |
555 | builtin_define_type_max ("__INT_FAST64_MAX__", int_fast64_type_node); | |
556 | builtin_define_type_width ("__INT_FAST64_WIDTH__", int_fast64_type_node, | |
557 | uint_fast64_type_node); | |
558 | } | |
207bf79d JM |
559 | if (uint_fast8_type_node) |
560 | builtin_define_type_max ("__UINT_FAST8_MAX__", uint_fast8_type_node); | |
561 | if (uint_fast16_type_node) | |
562 | builtin_define_type_max ("__UINT_FAST16_MAX__", uint_fast16_type_node); | |
563 | if (uint_fast32_type_node) | |
564 | builtin_define_type_max ("__UINT_FAST32_MAX__", uint_fast32_type_node); | |
565 | if (uint_fast64_type_node) | |
566 | builtin_define_type_max ("__UINT_FAST64_MAX__", uint_fast64_type_node); | |
567 | if (intptr_type_node) | |
c65248cb JM |
568 | { |
569 | builtin_define_type_max ("__INTPTR_MAX__", intptr_type_node); | |
570 | builtin_define_type_width ("__INTPTR_WIDTH__", intptr_type_node, | |
571 | uintptr_type_node); | |
572 | } | |
207bf79d JM |
573 | if (uintptr_type_node) |
574 | builtin_define_type_max ("__UINTPTR_MAX__", uintptr_type_node); | |
85291069 JM |
575 | } |
576 | ||
ab442df7 MM |
577 | /* Adjust the optimization macros when a #pragma GCC optimization is done to |
578 | reflect the current level. */ | |
579 | void | |
580 | c_cpp_builtins_optimize_pragma (cpp_reader *pfile, tree prev_tree, | |
581 | tree cur_tree) | |
582 | { | |
583 | struct cl_optimization *prev = TREE_OPTIMIZATION (prev_tree); | |
584 | struct cl_optimization *cur = TREE_OPTIMIZATION (cur_tree); | |
585 | bool prev_fast_math; | |
586 | bool cur_fast_math; | |
587 | ||
588 | /* -undef turns off target-specific built-ins. */ | |
589 | if (flag_undef) | |
590 | return; | |
591 | ||
1dbe26b9 JJ |
592 | /* Make sure all of the builtins about to be declared have |
593 | BUILTINS_LOCATION has their location_t. */ | |
594 | cpp_force_token_locations (parse_in, BUILTINS_LOCATION); | |
595 | ||
ab442df7 MM |
596 | /* Other target-independent built-ins determined by command-line |
597 | options. */ | |
e3339d0f | 598 | if (!prev->x_optimize_size && cur->x_optimize_size) |
6f1ae1ec | 599 | cpp_define_unused (pfile, "__OPTIMIZE_SIZE__"); |
e3339d0f | 600 | else if (prev->x_optimize_size && !cur->x_optimize_size) |
ab442df7 MM |
601 | cpp_undef (pfile, "__OPTIMIZE_SIZE__"); |
602 | ||
e3339d0f | 603 | if (!prev->x_optimize && cur->x_optimize) |
6f1ae1ec | 604 | cpp_define_unused (pfile, "__OPTIMIZE__"); |
e3339d0f | 605 | else if (prev->x_optimize && !cur->x_optimize) |
ab442df7 MM |
606 | cpp_undef (pfile, "__OPTIMIZE__"); |
607 | ||
608 | prev_fast_math = fast_math_flags_struct_set_p (prev); | |
609 | cur_fast_math = fast_math_flags_struct_set_p (cur); | |
610 | if (!prev_fast_math && cur_fast_math) | |
6f1ae1ec | 611 | cpp_define_unused (pfile, "__FAST_MATH__"); |
ab442df7 MM |
612 | else if (prev_fast_math && !cur_fast_math) |
613 | cpp_undef (pfile, "__FAST_MATH__"); | |
614 | ||
e3339d0f | 615 | if (!prev->x_flag_signaling_nans && cur->x_flag_signaling_nans) |
6f1ae1ec | 616 | cpp_define_unused (pfile, "__SUPPORT_SNAN__"); |
e3339d0f | 617 | else if (prev->x_flag_signaling_nans && !cur->x_flag_signaling_nans) |
ab442df7 MM |
618 | cpp_undef (pfile, "__SUPPORT_SNAN__"); |
619 | ||
2079956a JM |
620 | if (!prev->x_flag_errno_math && cur->x_flag_errno_math) |
621 | cpp_undef (pfile, "__NO_MATH_ERRNO__"); | |
622 | else if (prev->x_flag_errno_math && !cur->x_flag_errno_math) | |
6f1ae1ec | 623 | cpp_define_unused (pfile, "__NO_MATH_ERRNO__"); |
2079956a | 624 | |
e3339d0f | 625 | if (!prev->x_flag_finite_math_only && cur->x_flag_finite_math_only) |
ab442df7 MM |
626 | { |
627 | cpp_undef (pfile, "__FINITE_MATH_ONLY__"); | |
6f1ae1ec | 628 | cpp_define_unused (pfile, "__FINITE_MATH_ONLY__=1"); |
ab442df7 | 629 | } |
0e3fdb48 | 630 | else if (prev->x_flag_finite_math_only && !cur->x_flag_finite_math_only) |
ab442df7 MM |
631 | { |
632 | cpp_undef (pfile, "__FINITE_MATH_ONLY__"); | |
6f1ae1ec | 633 | cpp_define_unused (pfile, "__FINITE_MATH_ONLY__=0"); |
ab442df7 | 634 | } |
1949d754 MK |
635 | |
636 | if (!prev->x_flag_reciprocal_math && cur->x_flag_reciprocal_math) | |
637 | cpp_define_unused (pfile, "__RECIPROCAL_MATH__"); | |
638 | else if (prev->x_flag_reciprocal_math && !cur->x_flag_reciprocal_math) | |
639 | cpp_undef (pfile, "__RECIPROCAL_MATH__"); | |
640 | ||
641 | if (!prev->x_flag_signed_zeros && cur->x_flag_signed_zeros) | |
642 | cpp_undef (pfile, "__NO_SIGNED_ZEROS__"); | |
643 | else if (prev->x_flag_signed_zeros && !cur->x_flag_signed_zeros) | |
644 | cpp_define_unused (pfile, "__NO_SIGNED_ZEROS__"); | |
645 | ||
646 | if (!prev->x_flag_trapping_math && cur->x_flag_trapping_math) | |
647 | cpp_undef (pfile, "__NO_TRAPPING_MATH__"); | |
648 | else if (prev->x_flag_trapping_math && !cur->x_flag_trapping_math) | |
649 | cpp_define_unused (pfile, "__NO_TRAPPING_MATH__"); | |
650 | ||
651 | if (!prev->x_flag_associative_math && cur->x_flag_associative_math) | |
652 | cpp_define_unused (pfile, "__ASSOCIATIVE_MATH__"); | |
653 | else if (prev->x_flag_associative_math && !cur->x_flag_associative_math) | |
654 | cpp_undef (pfile, "__ASSOCIATIVE_MATH__"); | |
655 | ||
656 | if (!prev->x_flag_rounding_math && cur->x_flag_rounding_math) | |
657 | cpp_define_unused (pfile, "__ROUNDING_MATH__"); | |
658 | else if (prev->x_flag_rounding_math && !cur->x_flag_rounding_math) | |
659 | cpp_undef (pfile, "__ROUNDING_MATH__"); | |
1dbe26b9 JJ |
660 | |
661 | cpp_stop_forcing_token_locations (parse_in); | |
ab442df7 MM |
662 | } |
663 | ||
664 | ||
62bad7cd AM |
665 | /* This function will emit cpp macros to indicate the presence of various lock |
666 | free atomic operations. */ | |
667 | ||
668 | static void | |
669 | cpp_atomic_builtins (cpp_reader *pfile) | |
670 | { | |
671 | /* Set a flag for each size of object that compare and swap exists for up to | |
672 | a 16 byte object. */ | |
673 | #define SWAP_LIMIT 17 | |
674 | bool have_swap[SWAP_LIMIT]; | |
675 | unsigned int psize; | |
676 | ||
677 | /* Clear the map of sizes compare_and swap exists for. */ | |
678 | memset (have_swap, 0, sizeof (have_swap)); | |
679 | ||
680 | /* Tell source code if the compiler makes sync_compare_and_swap | |
681 | builtins available. */ | |
682 | #ifndef HAVE_sync_compare_and_swapqi | |
683 | #define HAVE_sync_compare_and_swapqi 0 | |
684 | #endif | |
685 | #ifndef HAVE_atomic_compare_and_swapqi | |
686 | #define HAVE_atomic_compare_and_swapqi 0 | |
687 | #endif | |
688 | ||
689 | if (HAVE_sync_compare_and_swapqi || HAVE_atomic_compare_and_swapqi) | |
690 | { | |
691 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1"); | |
692 | have_swap[1] = true; | |
693 | } | |
694 | ||
695 | #ifndef HAVE_sync_compare_and_swaphi | |
696 | #define HAVE_sync_compare_and_swaphi 0 | |
697 | #endif | |
698 | #ifndef HAVE_atomic_compare_and_swaphi | |
699 | #define HAVE_atomic_compare_and_swaphi 0 | |
700 | #endif | |
701 | if (HAVE_sync_compare_and_swaphi || HAVE_atomic_compare_and_swaphi) | |
702 | { | |
703 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2"); | |
704 | have_swap[2] = true; | |
705 | } | |
706 | ||
707 | #ifndef HAVE_sync_compare_and_swapsi | |
708 | #define HAVE_sync_compare_and_swapsi 0 | |
709 | #endif | |
710 | #ifndef HAVE_atomic_compare_and_swapsi | |
711 | #define HAVE_atomic_compare_and_swapsi 0 | |
712 | #endif | |
713 | if (HAVE_sync_compare_and_swapsi || HAVE_atomic_compare_and_swapsi) | |
714 | { | |
715 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4"); | |
716 | have_swap[4] = true; | |
717 | } | |
718 | ||
719 | #ifndef HAVE_sync_compare_and_swapdi | |
720 | #define HAVE_sync_compare_and_swapdi 0 | |
721 | #endif | |
722 | #ifndef HAVE_atomic_compare_and_swapdi | |
723 | #define HAVE_atomic_compare_and_swapdi 0 | |
724 | #endif | |
725 | if (HAVE_sync_compare_and_swapdi || HAVE_atomic_compare_and_swapdi) | |
726 | { | |
727 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8"); | |
728 | have_swap[8] = true; | |
729 | } | |
730 | ||
731 | #ifndef HAVE_sync_compare_and_swapti | |
732 | #define HAVE_sync_compare_and_swapti 0 | |
733 | #endif | |
734 | #ifndef HAVE_atomic_compare_and_swapti | |
735 | #define HAVE_atomic_compare_and_swapti 0 | |
736 | #endif | |
737 | if (HAVE_sync_compare_and_swapti || HAVE_atomic_compare_and_swapti) | |
738 | { | |
739 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16"); | |
740 | have_swap[16] = true; | |
741 | } | |
742 | ||
48b0b196 | 743 | /* Tell the source code about various types. These map to the C++11 and C11 |
62bad7cd AM |
744 | macros where 2 indicates lock-free always, and 1 indicates sometimes |
745 | lock free. */ | |
ae7e9ddd | 746 | #define SIZEOF_NODE(T) (tree_to_uhwi (TYPE_SIZE_UNIT (T))) |
62bad7cd AM |
747 | #define SWAP_INDEX(T) ((SIZEOF_NODE (T) < SWAP_LIMIT) ? SIZEOF_NODE (T) : 0) |
748 | builtin_define_with_int_value ("__GCC_ATOMIC_BOOL_LOCK_FREE", | |
749 | (have_swap[SWAP_INDEX (boolean_type_node)]? 2 : 1)); | |
750 | builtin_define_with_int_value ("__GCC_ATOMIC_CHAR_LOCK_FREE", | |
751 | (have_swap[SWAP_INDEX (signed_char_type_node)]? 2 : 1)); | |
2d91f79d TH |
752 | if (flag_char8_t) |
753 | builtin_define_with_int_value ("__GCC_ATOMIC_CHAR8_T_LOCK_FREE", | |
754 | (have_swap[SWAP_INDEX (char8_type_node)]? 2 : 1)); | |
62bad7cd AM |
755 | builtin_define_with_int_value ("__GCC_ATOMIC_CHAR16_T_LOCK_FREE", |
756 | (have_swap[SWAP_INDEX (char16_type_node)]? 2 : 1)); | |
757 | builtin_define_with_int_value ("__GCC_ATOMIC_CHAR32_T_LOCK_FREE", | |
758 | (have_swap[SWAP_INDEX (char32_type_node)]? 2 : 1)); | |
759 | builtin_define_with_int_value ("__GCC_ATOMIC_WCHAR_T_LOCK_FREE", | |
760 | (have_swap[SWAP_INDEX (wchar_type_node)]? 2 : 1)); | |
761 | builtin_define_with_int_value ("__GCC_ATOMIC_SHORT_LOCK_FREE", | |
762 | (have_swap[SWAP_INDEX (short_integer_type_node)]? 2 : 1)); | |
763 | builtin_define_with_int_value ("__GCC_ATOMIC_INT_LOCK_FREE", | |
764 | (have_swap[SWAP_INDEX (integer_type_node)]? 2 : 1)); | |
765 | builtin_define_with_int_value ("__GCC_ATOMIC_LONG_LOCK_FREE", | |
766 | (have_swap[SWAP_INDEX (long_integer_type_node)]? 2 : 1)); | |
767 | builtin_define_with_int_value ("__GCC_ATOMIC_LLONG_LOCK_FREE", | |
768 | (have_swap[SWAP_INDEX (long_long_integer_type_node)]? 2 : 1)); | |
769 | ||
57c5ab1b RH |
770 | /* If we're dealing with a "set" value that doesn't exactly correspond |
771 | to a boolean truth value, let the library work around that. */ | |
772 | builtin_define_with_int_value ("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", | |
773 | targetm.atomic_test_and_set_trueval); | |
774 | ||
76b75018 JM |
775 | /* Macros for C++17 hardware interference size constants. Either both or |
776 | neither should be set. */ | |
777 | gcc_assert (!param_destruct_interfere_size | |
778 | == !param_construct_interfere_size); | |
779 | if (param_destruct_interfere_size) | |
780 | { | |
781 | /* FIXME The way of communicating these values to the library should be | |
782 | part of the C++ ABI, whether macro or builtin. */ | |
783 | builtin_define_with_int_value ("__GCC_DESTRUCTIVE_SIZE", | |
784 | param_destruct_interfere_size); | |
785 | builtin_define_with_int_value ("__GCC_CONSTRUCTIVE_SIZE", | |
786 | param_construct_interfere_size); | |
787 | } | |
788 | ||
62bad7cd AM |
789 | /* ptr_type_node can't be used here since ptr_mode is only set when |
790 | toplev calls backend_init which is not done with -E or pch. */ | |
5b8300ea | 791 | psize = POINTER_SIZE_UNITS; |
62bad7cd AM |
792 | if (psize >= SWAP_LIMIT) |
793 | psize = 0; | |
794 | builtin_define_with_int_value ("__GCC_ATOMIC_POINTER_LOCK_FREE", | |
795 | (have_swap[psize]? 2 : 1)); | |
796 | } | |
797 | ||
56d8ffc1 JG |
798 | /* Return TRUE if the implicit excess precision in which the back-end will |
799 | compute floating-point calculations is not more than the explicit | |
800 | excess precision that the front-end will apply under | |
f19a3270 | 801 | -fexcess-precision=[standard|fast|16]. |
56d8ffc1 JG |
802 | |
803 | More intuitively, return TRUE if the excess precision proposed by the | |
804 | front-end is the excess precision that will actually be used. */ | |
805 | ||
806 | static bool | |
807 | c_cpp_flt_eval_method_iec_559 (void) | |
808 | { | |
809 | enum excess_precision_type front_end_ept | |
df375b03 | 810 | = (flag_excess_precision == EXCESS_PRECISION_STANDARD |
56d8ffc1 | 811 | ? EXCESS_PRECISION_TYPE_STANDARD |
f19a3270 | 812 | : (flag_excess_precision == EXCESS_PRECISION_FLOAT16 |
813 | ? EXCESS_PRECISION_TYPE_FLOAT16 | |
814 | : EXCESS_PRECISION_TYPE_FAST)); | |
56d8ffc1 JG |
815 | |
816 | enum flt_eval_method back_end | |
817 | = targetm.c.excess_precision (EXCESS_PRECISION_TYPE_IMPLICIT); | |
818 | ||
819 | enum flt_eval_method front_end | |
820 | = targetm.c.excess_precision (front_end_ept); | |
821 | ||
822 | return excess_precision_mode_join (front_end, back_end) == front_end; | |
823 | } | |
824 | ||
9193fb05 JM |
825 | /* Return the value for __GCC_IEC_559. */ |
826 | static int | |
827 | cpp_iec_559_value (void) | |
828 | { | |
829 | /* The default is support for IEEE 754-2008. */ | |
830 | int ret = 2; | |
831 | ||
832 | /* float and double must be binary32 and binary64. If they are but | |
833 | with reversed NaN convention, at most IEEE 754-1985 is | |
834 | supported. */ | |
835 | const struct real_format *ffmt | |
836 | = REAL_MODE_FORMAT (TYPE_MODE (float_type_node)); | |
837 | const struct real_format *dfmt | |
838 | = REAL_MODE_FORMAT (TYPE_MODE (double_type_node)); | |
839 | if (!ffmt->qnan_msb_set || !dfmt->qnan_msb_set) | |
840 | ret = 1; | |
841 | if (ffmt->b != 2 | |
842 | || ffmt->p != 24 | |
843 | || ffmt->pnan != 24 | |
844 | || ffmt->emin != -125 | |
845 | || ffmt->emax != 128 | |
846 | || ffmt->signbit_rw != 31 | |
847 | || ffmt->round_towards_zero | |
848 | || !ffmt->has_sign_dependent_rounding | |
849 | || !ffmt->has_nans | |
850 | || !ffmt->has_inf | |
851 | || !ffmt->has_denorm | |
852 | || !ffmt->has_signed_zero | |
853 | || dfmt->b != 2 | |
854 | || dfmt->p != 53 | |
855 | || dfmt->pnan != 53 | |
856 | || dfmt->emin != -1021 | |
857 | || dfmt->emax != 1024 | |
858 | || dfmt->signbit_rw != 63 | |
859 | || dfmt->round_towards_zero | |
860 | || !dfmt->has_sign_dependent_rounding | |
861 | || !dfmt->has_nans | |
862 | || !dfmt->has_inf | |
863 | || !dfmt->has_denorm | |
864 | || !dfmt->has_signed_zero) | |
865 | ret = 0; | |
866 | ||
56d8ffc1 JG |
867 | /* In strict C standards conformance mode, consider a back-end providing |
868 | more implicit excess precision than the explicit excess precision | |
869 | the front-end options would require to mean a lack of IEEE 754 | |
870 | support. For C++, and outside strict conformance mode, do not consider | |
871 | this to mean a lack of IEEE 754 support. */ | |
872 | ||
9193fb05 JM |
873 | if (flag_iso |
874 | && !c_dialect_cxx () | |
56d8ffc1 | 875 | && !c_cpp_flt_eval_method_iec_559 ()) |
9193fb05 | 876 | ret = 0; |
56d8ffc1 | 877 | |
6dbe0958 JM |
878 | if (flag_iso |
879 | && !c_dialect_cxx () | |
880 | && flag_fp_contract_mode == FP_CONTRACT_FAST) | |
881 | ret = 0; | |
9193fb05 JM |
882 | |
883 | /* Various options are contrary to IEEE 754 semantics. */ | |
884 | if (flag_unsafe_math_optimizations | |
885 | || flag_associative_math | |
886 | || flag_reciprocal_math | |
887 | || flag_finite_math_only | |
888 | || !flag_signed_zeros | |
889 | || flag_single_precision_constant) | |
890 | ret = 0; | |
891 | ||
892 | /* If the target does not support IEEE 754 exceptions and rounding | |
893 | modes, consider IEEE 754 support to be absent. */ | |
894 | if (!targetm.float_exceptions_rounding_supported_p ()) | |
895 | ret = 0; | |
896 | ||
897 | return ret; | |
898 | } | |
899 | ||
900 | /* Return the value for __GCC_IEC_559_COMPLEX. */ | |
901 | static int | |
902 | cpp_iec_559_complex_value (void) | |
903 | { | |
904 | /* The value is no bigger than that of __GCC_IEC_559. */ | |
905 | int ret = cpp_iec_559_value (); | |
906 | ||
907 | /* Some options are contrary to the required default state of the | |
908 | CX_LIMITED_RANGE pragma. */ | |
909 | if (flag_complex_method != 2) | |
910 | ret = 0; | |
911 | ||
912 | return ret; | |
913 | } | |
914 | ||
cb60f38d NB |
915 | /* Hook that registers front end and target-specific built-ins. */ |
916 | void | |
35b1a6fa | 917 | c_cpp_builtins (cpp_reader *pfile) |
cb60f38d | 918 | { |
78a7c317 DD |
919 | int i; |
920 | ||
cb60f38d NB |
921 | /* -undef turns off target-specific built-ins. */ |
922 | if (flag_undef) | |
923 | return; | |
924 | ||
82a1c2fe FXC |
925 | define_language_independent_builtin_macros (pfile); |
926 | ||
eccec868 JM |
927 | /* encoding definitions used by users and libraries */ |
928 | builtin_define_with_value ("__GNUC_EXECUTION_CHARSET_NAME", | |
929 | cpp_get_narrow_charset_name (pfile), 1); | |
930 | builtin_define_with_value ("__GNUC_WIDE_EXECUTION_CHARSET_NAME", | |
931 | cpp_get_wide_charset_name (pfile), 1); | |
932 | ||
933 | ||
82a1c2fe FXC |
934 | if (c_dialect_cxx ()) |
935 | { | |
936 | int major; | |
937 | parse_basever (&major, NULL, NULL); | |
938 | cpp_define_formatted (pfile, "__GNUG__=%d", major); | |
939 | } | |
cb60f38d | 940 | |
e53b6e56 | 941 | /* For stddef.h. They require macros defined in c-common.cc. */ |
cb60f38d NB |
942 | c_stddef_cpp_builtins (); |
943 | ||
37fa72e9 | 944 | if (c_dialect_cxx ()) |
cb60f38d | 945 | { |
c22cacf3 | 946 | if (flag_weak && SUPPORTS_ONE_ONLY) |
cb60f38d NB |
947 | cpp_define (pfile, "__GXX_WEAK__=1"); |
948 | else | |
949 | cpp_define (pfile, "__GXX_WEAK__=0"); | |
a15f7cb8 | 950 | |
cb60f38d NB |
951 | if (warn_deprecated) |
952 | cpp_define (pfile, "__DEPRECATED"); | |
a15f7cb8 | 953 | |
ba551ec2 | 954 | if (flag_rtti) |
42fd12b1 ESR |
955 | { |
956 | cpp_define (pfile, "__GXX_RTTI"); | |
43f1814c | 957 | cpp_define (pfile, "__cpp_rtti=199711L"); |
42fd12b1 | 958 | } |
a15f7cb8 | 959 | |
604b2bfc | 960 | if (cxx_dialect >= cxx11) |
c573f4d5 | 961 | cpp_define (pfile, "__GXX_EXPERIMENTAL_CXX0X__"); |
a15f7cb8 ESR |
962 | |
963 | /* Binary literals have been allowed in g++ before C++11 | |
964 | and were standardized for C++14. */ | |
965 | if (!pedantic || cxx_dialect > cxx11) | |
43f1814c | 966 | cpp_define (pfile, "__cpp_binary_literals=201304L"); |
94a073b2 | 967 | |
2aaeea19 JM |
968 | /* Similarly for hexadecimal floating point literals and C++17. */ |
969 | if (!pedantic || cpp_get_options (parse_in)->extended_numbers) | |
43f1814c | 970 | cpp_define (pfile, "__cpp_hex_float=201603L"); |
2aaeea19 | 971 | |
94a073b2 JM |
972 | /* Arrays of runtime bound were removed from C++14, but we still |
973 | support GNU VLAs. Let's define this macro to a low number | |
974 | (corresponding to the initial test release of GNU C++) if we won't | |
975 | complain about use of VLAs. */ | |
976 | if (c_dialect_cxx () | |
977 | && (pedantic ? warn_vla == 0 : warn_vla <= 0)) | |
43f1814c | 978 | cpp_define (pfile, "__cpp_runtime_arrays=198712L"); |
94a073b2 | 979 | |
a15f7cb8 ESR |
980 | if (cxx_dialect >= cxx11) |
981 | { | |
329524f5 | 982 | /* Set feature test macros for C++11. */ |
13b380a3 | 983 | if (cxx_dialect <= cxx14) |
43f1814c NS |
984 | cpp_define (pfile, "__cpp_unicode_characters=200704L"); |
985 | cpp_define (pfile, "__cpp_raw_strings=200710L"); | |
986 | cpp_define (pfile, "__cpp_unicode_literals=200710L"); | |
987 | cpp_define (pfile, "__cpp_user_defined_literals=200809L"); | |
988 | cpp_define (pfile, "__cpp_lambdas=200907L"); | |
acaa5911 | 989 | if (cxx_dialect == cxx11) |
43f1814c | 990 | cpp_define (pfile, "__cpp_constexpr=200704L"); |
9aa36ae5 | 991 | if (cxx_dialect <= cxx14) |
43f1814c | 992 | cpp_define (pfile, "__cpp_range_based_for=200907L"); |
329524f5 | 993 | if (cxx_dialect <= cxx14) |
43f1814c NS |
994 | cpp_define (pfile, "__cpp_static_assert=200410L"); |
995 | cpp_define (pfile, "__cpp_decltype=200707L"); | |
996 | cpp_define (pfile, "__cpp_attributes=200809L"); | |
997 | cpp_define (pfile, "__cpp_rvalue_reference=200610L"); | |
998 | cpp_define (pfile, "__cpp_rvalue_references=200610L"); | |
999 | cpp_define (pfile, "__cpp_variadic_templates=200704L"); | |
1000 | cpp_define (pfile, "__cpp_initializer_lists=200806L"); | |
1001 | cpp_define (pfile, "__cpp_delegating_constructors=200604L"); | |
1002 | cpp_define (pfile, "__cpp_nsdmi=200809L"); | |
2bc78e3c | 1003 | if (!flag_new_inheriting_ctors) |
43f1814c | 1004 | cpp_define (pfile, "__cpp_inheriting_constructors=200802L"); |
2bc78e3c | 1005 | else |
43f1814c NS |
1006 | cpp_define (pfile, "__cpp_inheriting_constructors=201511L"); |
1007 | cpp_define (pfile, "__cpp_ref_qualifiers=200710L"); | |
1008 | cpp_define (pfile, "__cpp_alias_templates=200704L"); | |
a15f7cb8 ESR |
1009 | } |
1010 | if (cxx_dialect > cxx11) | |
1011 | { | |
329524f5 | 1012 | /* Set feature test macros for C++14. */ |
43f1814c | 1013 | cpp_define (pfile, "__cpp_return_type_deduction=201304L"); |
761df906 JJ |
1014 | if (cxx_dialect <= cxx17) |
1015 | { | |
1016 | cpp_define (pfile, "__cpp_init_captures=201304L"); | |
1017 | cpp_define (pfile, "__cpp_generic_lambdas=201304L"); | |
1018 | } | |
98e5a19a | 1019 | if (cxx_dialect <= cxx14) |
43f1814c NS |
1020 | cpp_define (pfile, "__cpp_constexpr=201304L"); |
1021 | cpp_define (pfile, "__cpp_decltype_auto=201304L"); | |
1022 | cpp_define (pfile, "__cpp_aggregate_nsdmi=201304L"); | |
1023 | cpp_define (pfile, "__cpp_variable_templates=201304L"); | |
1024 | cpp_define (pfile, "__cpp_digit_separators=201309L"); | |
a15f7cb8 | 1025 | } |
329524f5 PC |
1026 | if (cxx_dialect > cxx14) |
1027 | { | |
b5ff4f5c | 1028 | /* Set feature test macros for C++17. */ |
43f1814c NS |
1029 | cpp_define (pfile, "__cpp_unicode_characters=201411L"); |
1030 | cpp_define (pfile, "__cpp_static_assert=201411L"); | |
1031 | cpp_define (pfile, "__cpp_namespace_attributes=201411L"); | |
1032 | cpp_define (pfile, "__cpp_enumerator_attributes=201411L"); | |
1033 | cpp_define (pfile, "__cpp_nested_namespace_definitions=201411L"); | |
1034 | cpp_define (pfile, "__cpp_fold_expressions=201603L"); | |
81279891 JM |
1035 | if (cxx_dialect <= cxx17) |
1036 | cpp_define (pfile, "__cpp_nontype_template_args=201411L"); | |
43f1814c | 1037 | cpp_define (pfile, "__cpp_range_based_for=201603L"); |
7906797e MP |
1038 | if (cxx_dialect <= cxx17) |
1039 | cpp_define (pfile, "__cpp_constexpr=201603L"); | |
43f1814c NS |
1040 | cpp_define (pfile, "__cpp_if_constexpr=201606L"); |
1041 | cpp_define (pfile, "__cpp_capture_star_this=201603L"); | |
1042 | cpp_define (pfile, "__cpp_inline_variables=201606L"); | |
1043 | cpp_define (pfile, "__cpp_aggregate_bases=201603L"); | |
1a291106 JM |
1044 | if (cxx_dialect <= cxx17) |
1045 | cpp_define (pfile, "__cpp_deduction_guides=201703L"); | |
43f1814c | 1046 | cpp_define (pfile, "__cpp_noexcept_function_type=201510L"); |
a30d0196 JJ |
1047 | /* Old macro, superseded by |
1048 | __cpp_nontype_template_parameter_auto. */ | |
43f1814c NS |
1049 | cpp_define (pfile, "__cpp_template_auto=201606L"); |
1050 | cpp_define (pfile, "__cpp_structured_bindings=201606L"); | |
1051 | cpp_define (pfile, "__cpp_variadic_using=201611L"); | |
1052 | cpp_define (pfile, "__cpp_guaranteed_copy_elision=201606L"); | |
1053 | cpp_define (pfile, "__cpp_nontype_template_parameter_auto=201606L"); | |
329524f5 | 1054 | } |
b5ff4f5c MP |
1055 | if (cxx_dialect > cxx17) |
1056 | { | |
b04445d4 | 1057 | /* Set feature test macros for C++20. */ |
761df906 JJ |
1058 | cpp_define (pfile, "__cpp_init_captures=201803L"); |
1059 | cpp_define (pfile, "__cpp_generic_lambdas=201707L"); | |
1060 | cpp_define (pfile, "__cpp_designated_initializers=201707L"); | |
8892d532 | 1061 | if (cxx_dialect <= cxx20) |
d80f2248 | 1062 | cpp_define (pfile, "__cpp_constexpr=202002L"); |
761df906 | 1063 | cpp_define (pfile, "__cpp_constexpr_in_decltype=201711L"); |
43f1814c | 1064 | cpp_define (pfile, "__cpp_conditional_explicit=201806L"); |
e6321c45 | 1065 | cpp_define (pfile, "__cpp_consteval=201811L"); |
43f1814c | 1066 | cpp_define (pfile, "__cpp_constinit=201907L"); |
1a291106 | 1067 | cpp_define (pfile, "__cpp_deduction_guides=201907L"); |
81279891 | 1068 | cpp_define (pfile, "__cpp_nontype_template_args=201911L"); |
43f1814c NS |
1069 | cpp_define (pfile, "__cpp_nontype_template_parameter_class=201806L"); |
1070 | cpp_define (pfile, "__cpp_impl_destroying_delete=201806L"); | |
1071 | cpp_define (pfile, "__cpp_constexpr_dynamic_alloc=201907L"); | |
b7689b96 | 1072 | cpp_define (pfile, "__cpp_impl_three_way_comparison=201907L"); |
43aae289 | 1073 | cpp_define (pfile, "__cpp_aggregate_paren_init=201902L"); |
d4a3152d | 1074 | cpp_define (pfile, "__cpp_using_enum=201907L"); |
b5ff4f5c | 1075 | } |
1f69e63c ESR |
1076 | if (cxx_dialect > cxx20) |
1077 | { | |
1078 | /* Set feature test macros for C++23. */ | |
26fd3bf7 | 1079 | cpp_define (pfile, "__cpp_size_t_suffix=202011L"); |
117c6426 | 1080 | cpp_define (pfile, "__cpp_if_consteval=202106L"); |
8892d532 | 1081 | cpp_define (pfile, "__cpp_constexpr=202110L"); |
b38c9cf6 | 1082 | cpp_define (pfile, "__cpp_multidimensional_subscript=202110L"); |
eb4879ab | 1083 | cpp_define (pfile, "__cpp_named_character_escapes=202207L"); |
303976a6 | 1084 | cpp_define (pfile, "__cpp_static_call_operator=202207L"); |
1f69e63c | 1085 | } |
971e17ff | 1086 | if (flag_concepts) |
cb57504a | 1087 | { |
b04445d4 | 1088 | if (cxx_dialect >= cxx20) |
d80f2248 | 1089 | cpp_define (pfile, "__cpp_concepts=202002L"); |
cb57504a | 1090 | else |
43f1814c | 1091 | cpp_define (pfile, "__cpp_concepts=201507L"); |
cb57504a | 1092 | } |
41676a36 NS |
1093 | if (flag_modules) |
1094 | /* The std-defined value is 201907L, but I don't think we can | |
1095 | claim victory yet. 201810 is the p1103 date. */ | |
1096 | cpp_define (pfile, "__cpp_modules=201810L"); | |
49789fd0 | 1097 | if (flag_coroutines) |
ee26baf4 | 1098 | cpp_define (pfile, "__cpp_impl_coroutine=201902L"); /* n4861, DIS */ |
b8fd7909 JM |
1099 | if (flag_tm) |
1100 | /* Use a value smaller than the 201505 specified in | |
1101 | the TS, since we don't yet support atomic_cancel. */ | |
43f1814c | 1102 | cpp_define (pfile, "__cpp_transactional_memory=201500L"); |
a7fa8d18 | 1103 | if (flag_sized_deallocation) |
43f1814c | 1104 | cpp_define (pfile, "__cpp_sized_deallocation=201309L"); |
2e1c20b1 | 1105 | if (aligned_new_threshold) |
af63ba4b | 1106 | { |
43f1814c | 1107 | cpp_define (pfile, "__cpp_aligned_new=201606L"); |
af63ba4b | 1108 | cpp_define_formatted (pfile, "__STDCPP_DEFAULT_NEW_ALIGNMENT__=%d", |
2e1c20b1 | 1109 | aligned_new_threshold); |
af63ba4b | 1110 | } |
67a5ad7c | 1111 | if (flag_new_ttp) |
43f1814c | 1112 | cpp_define (pfile, "__cpp_template_template_args=201611L"); |
019bf9ad | 1113 | if (flag_threadsafe_statics) |
43f1814c | 1114 | cpp_define (pfile, "__cpp_threadsafe_static_init=200806L"); |
2d91f79d | 1115 | if (flag_char8_t) |
567329fd | 1116 | cpp_define (pfile, "__cpp_char8_t=202207L"); |
1d9a8675 JJ |
1117 | #ifndef THREAD_MODEL_SPEC |
1118 | /* Targets that define THREAD_MODEL_SPEC need to define | |
1119 | __STDCPP_THREADS__ in their config/XXX/XXX-c.c themselves. */ | |
1120 | if (cxx_dialect >= cxx11 && strcmp (thread_model, "single") != 0) | |
1121 | cpp_define (pfile, "__STDCPP_THREADS__=1"); | |
1122 | #endif | |
87c2080b JM |
1123 | if (flag_implicit_constexpr) |
1124 | cpp_define (pfile, "__cpp_implicit_constexpr=20211111L"); | |
cb60f38d | 1125 | } |
6cd77c3f RH |
1126 | /* Note that we define this for C as well, so that we know if |
1127 | __attribute__((cleanup)) will interface with EH. */ | |
2288bdbb | 1128 | if (flag_exceptions) |
42fd12b1 ESR |
1129 | { |
1130 | cpp_define (pfile, "__EXCEPTIONS"); | |
1131 | if (c_dialect_cxx ()) | |
43f1814c | 1132 | cpp_define (pfile, "__cpp_exceptions=199711L"); |
42fd12b1 | 1133 | } |
cb60f38d | 1134 | |
e0a21ab9 | 1135 | /* Represents the C++ ABI version, always defined so it can be used while |
cb60f38d | 1136 | preprocessing C and assembler. */ |
57702a80 | 1137 | if (flag_abi_version == 0) |
785f21af JM |
1138 | /* We should have set this to something real in c_common_post_options. */ |
1139 | gcc_unreachable (); | |
57702a80 | 1140 | else if (flag_abi_version == 1) |
1f838355 | 1141 | /* Due to a historical accident, this version had the value |
57702a80 MM |
1142 | "102". */ |
1143 | builtin_define_with_int_value ("__GXX_ABI_VERSION", 102); | |
1144 | else | |
e0a21ab9 | 1145 | /* Newer versions have values 1002, 1003, .... */ |
c22cacf3 | 1146 | builtin_define_with_int_value ("__GXX_ABI_VERSION", |
57702a80 | 1147 | 1000 + flag_abi_version); |
cb60f38d NB |
1148 | |
1149 | /* libgcc needs to know this. */ | |
677f3fa8 | 1150 | if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ) |
cb60f38d NB |
1151 | cpp_define (pfile, "__USING_SJLJ_EXCEPTIONS__"); |
1152 | ||
207bf79d JM |
1153 | /* limits.h and stdint.h need to know these. */ |
1154 | builtin_define_type_max ("__SCHAR_MAX__", signed_char_type_node); | |
1155 | builtin_define_type_max ("__SHRT_MAX__", short_integer_type_node); | |
1156 | builtin_define_type_max ("__INT_MAX__", integer_type_node); | |
1157 | builtin_define_type_max ("__LONG_MAX__", long_integer_type_node); | |
1158 | builtin_define_type_max ("__LONG_LONG_MAX__", long_long_integer_type_node); | |
1159 | builtin_define_type_minmax ("__WCHAR_MIN__", "__WCHAR_MAX__", | |
1160 | underlying_wchar_type_node); | |
1161 | builtin_define_type_minmax ("__WINT_MIN__", "__WINT_MAX__", wint_type_node); | |
1162 | builtin_define_type_max ("__PTRDIFF_MAX__", ptrdiff_type_node); | |
1163 | builtin_define_type_max ("__SIZE_MAX__", size_type_node); | |
cb60f38d | 1164 | |
c65248cb JM |
1165 | /* These are needed for TS 18661-1. */ |
1166 | builtin_define_type_width ("__SCHAR_WIDTH__", signed_char_type_node, | |
1167 | unsigned_char_type_node); | |
1168 | builtin_define_type_width ("__SHRT_WIDTH__", short_integer_type_node, | |
1169 | short_unsigned_type_node); | |
1170 | builtin_define_type_width ("__INT_WIDTH__", integer_type_node, | |
1171 | unsigned_type_node); | |
1172 | builtin_define_type_width ("__LONG_WIDTH__", long_integer_type_node, | |
1173 | long_unsigned_type_node); | |
1174 | builtin_define_type_width ("__LONG_LONG_WIDTH__", | |
1175 | long_long_integer_type_node, | |
1176 | long_long_unsigned_type_node); | |
1177 | builtin_define_type_width ("__WCHAR_WIDTH__", underlying_wchar_type_node, | |
1178 | NULL_TREE); | |
1179 | builtin_define_type_width ("__WINT_WIDTH__", wint_type_node, NULL_TREE); | |
1180 | builtin_define_type_width ("__PTRDIFF_WIDTH__", ptrdiff_type_node, NULL_TREE); | |
1181 | builtin_define_type_width ("__SIZE_WIDTH__", size_type_node, NULL_TREE); | |
1182 | ||
e1217ac7 DD |
1183 | if (c_dialect_cxx ()) |
1184 | for (i = 0; i < NUM_INT_N_ENTS; i ++) | |
1185 | if (int_n_enabled_p[i]) | |
1186 | { | |
1187 | char buf[35+20+20]; | |
1188 | ||
1189 | /* These are used to configure the C++ library. */ | |
1190 | ||
1191 | if (!flag_iso || int_n_data[i].bitsize == POINTER_SIZE) | |
1192 | { | |
1193 | sprintf (buf, "__GLIBCXX_TYPE_INT_N_%d=__int%d", i, int_n_data[i].bitsize); | |
1194 | cpp_define (parse_in, buf); | |
1195 | ||
1196 | sprintf (buf, "__GLIBCXX_BITSIZE_INT_N_%d=%d", i, int_n_data[i].bitsize); | |
1197 | cpp_define (parse_in, buf); | |
1198 | } | |
1199 | } | |
78a7c317 | 1200 | |
207bf79d | 1201 | /* stdint.h and the testsuite need to know these. */ |
85291069 JM |
1202 | builtin_define_stdint_macros (); |
1203 | ||
9193fb05 JM |
1204 | /* Provide information for library headers to determine whether to |
1205 | define macros such as __STDC_IEC_559__ and | |
1206 | __STDC_IEC_559_COMPLEX__. */ | |
1207 | builtin_define_with_int_value ("__GCC_IEC_559", cpp_iec_559_value ()); | |
1208 | builtin_define_with_int_value ("__GCC_IEC_559_COMPLEX", | |
1209 | cpp_iec_559_complex_value ()); | |
1210 | ||
56d8ffc1 JG |
1211 | /* float.h needs these to correctly set FLT_EVAL_METHOD |
1212 | ||
1213 | We define two values: | |
1214 | ||
1215 | __FLT_EVAL_METHOD__ | |
1216 | Which, depending on the value given for | |
1217 | -fpermitted-flt-eval-methods, may be limited to only those values | |
1218 | for FLT_EVAL_METHOD defined in C99/C11. | |
1219 | ||
1220 | __FLT_EVAL_METHOD_TS_18661_3__ | |
1221 | Which always permits the values for FLT_EVAL_METHOD defined in | |
1222 | ISO/IEC TS 18661-3. */ | |
cb60f38d | 1223 | builtin_define_with_int_value ("__FLT_EVAL_METHOD__", |
56d8ffc1 JG |
1224 | c_flt_eval_method (true)); |
1225 | builtin_define_with_int_value ("__FLT_EVAL_METHOD_TS_18661_3__", | |
1226 | c_flt_eval_method (false)); | |
cb60f38d | 1227 | |
9a8ce21f JG |
1228 | /* And decfloat.h needs this. */ |
1229 | builtin_define_with_int_value ("__DEC_EVAL_METHOD__", | |
1230 | TARGET_DEC_EVAL_METHOD); | |
1231 | ||
1b1562a5 | 1232 | builtin_define_float_constants ("FLT", "F", "%s", "F", float_type_node); |
6ec637a4 JJ |
1233 | /* Cast the double precision constants. This is needed when single |
1234 | precision constants are specified or when pragma FLOAT_CONST_DECIMAL64 | |
1235 | is used. The correct result is computed by the compiler when using | |
bb0a9581 NF |
1236 | macros that include a cast. We use a different cast for C++ to avoid |
1237 | problems with -Wold-style-cast. */ | |
1238 | builtin_define_float_constants ("DBL", "L", | |
1239 | (c_dialect_cxx () | |
1240 | ? "double(%s)" | |
1241 | : "((double)%s)"), | |
1242 | "", double_type_node); | |
1b1562a5 MM |
1243 | builtin_define_float_constants ("LDBL", "L", "%s", "L", |
1244 | long_double_type_node); | |
cb60f38d | 1245 | |
c65699ef JM |
1246 | for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++) |
1247 | { | |
1248 | if (FLOATN_NX_TYPE_NODE (i) == NULL_TREE) | |
1249 | continue; | |
b0420889 JJ |
1250 | if (c_dialect_cxx () |
1251 | && cxx_dialect > cxx20 | |
1252 | && !floatn_nx_types[i].extended) | |
1253 | { | |
1254 | char name[sizeof ("__STDCPP_FLOAT128_T__=1")]; | |
1255 | sprintf (name, "__STDCPP_FLOAT%d_T__=1", floatn_nx_types[i].n); | |
1256 | cpp_define (pfile, name); | |
1257 | } | |
c65699ef JM |
1258 | char prefix[20], csuffix[20]; |
1259 | sprintf (prefix, "FLT%d%s", floatn_nx_types[i].n, | |
1260 | floatn_nx_types[i].extended ? "X" : ""); | |
1261 | sprintf (csuffix, "F%d%s", floatn_nx_types[i].n, | |
1262 | floatn_nx_types[i].extended ? "x" : ""); | |
53723269 JJ |
1263 | builtin_define_float_constants (prefix, ggc_strdup (csuffix), "%s", |
1264 | csuffix, FLOATN_NX_TYPE_NODE (i)); | |
c65699ef JM |
1265 | } |
1266 | ||
27dfdc0f JM |
1267 | /* For float.h. */ |
1268 | if (targetm.decimal_float_supported_p ()) | |
1269 | { | |
1270 | builtin_define_decimal_float_constants ("DEC32", "DF", | |
1271 | dfloat32_type_node); | |
1272 | builtin_define_decimal_float_constants ("DEC64", "DD", | |
1273 | dfloat64_type_node); | |
1274 | builtin_define_decimal_float_constants ("DEC128", "DL", | |
1275 | dfloat128_type_node); | |
1276 | } | |
9a8ce21f | 1277 | |
0f996086 CF |
1278 | /* For fixed-point fibt, ibit, max, min, and epsilon. */ |
1279 | if (targetm.fixed_point_supported_p ()) | |
1280 | { | |
1281 | builtin_define_fixed_point_constants ("SFRACT", "HR", | |
1282 | short_fract_type_node); | |
1283 | builtin_define_fixed_point_constants ("USFRACT", "UHR", | |
1284 | unsigned_short_fract_type_node); | |
1285 | builtin_define_fixed_point_constants ("FRACT", "R", | |
1286 | fract_type_node); | |
1287 | builtin_define_fixed_point_constants ("UFRACT", "UR", | |
1288 | unsigned_fract_type_node); | |
1289 | builtin_define_fixed_point_constants ("LFRACT", "LR", | |
1290 | long_fract_type_node); | |
1291 | builtin_define_fixed_point_constants ("ULFRACT", "ULR", | |
1292 | unsigned_long_fract_type_node); | |
1293 | builtin_define_fixed_point_constants ("LLFRACT", "LLR", | |
1294 | long_long_fract_type_node); | |
1295 | builtin_define_fixed_point_constants ("ULLFRACT", "ULLR", | |
1296 | unsigned_long_long_fract_type_node); | |
1297 | builtin_define_fixed_point_constants ("SACCUM", "HK", | |
1298 | short_accum_type_node); | |
1299 | builtin_define_fixed_point_constants ("USACCUM", "UHK", | |
1300 | unsigned_short_accum_type_node); | |
1301 | builtin_define_fixed_point_constants ("ACCUM", "K", | |
1302 | accum_type_node); | |
1303 | builtin_define_fixed_point_constants ("UACCUM", "UK", | |
1304 | unsigned_accum_type_node); | |
1305 | builtin_define_fixed_point_constants ("LACCUM", "LK", | |
1306 | long_accum_type_node); | |
1307 | builtin_define_fixed_point_constants ("ULACCUM", "ULK", | |
1308 | unsigned_long_accum_type_node); | |
1309 | builtin_define_fixed_point_constants ("LLACCUM", "LLK", | |
1310 | long_long_accum_type_node); | |
1311 | builtin_define_fixed_point_constants ("ULLACCUM", "ULLK", | |
1312 | unsigned_long_long_accum_type_node); | |
1313 | ||
1314 | builtin_define_fixed_point_constants ("QQ", "", qq_type_node); | |
1315 | builtin_define_fixed_point_constants ("HQ", "", hq_type_node); | |
1316 | builtin_define_fixed_point_constants ("SQ", "", sq_type_node); | |
1317 | builtin_define_fixed_point_constants ("DQ", "", dq_type_node); | |
1318 | builtin_define_fixed_point_constants ("TQ", "", tq_type_node); | |
1319 | builtin_define_fixed_point_constants ("UQQ", "", uqq_type_node); | |
1320 | builtin_define_fixed_point_constants ("UHQ", "", uhq_type_node); | |
1321 | builtin_define_fixed_point_constants ("USQ", "", usq_type_node); | |
1322 | builtin_define_fixed_point_constants ("UDQ", "", udq_type_node); | |
1323 | builtin_define_fixed_point_constants ("UTQ", "", utq_type_node); | |
1324 | builtin_define_fixed_point_constants ("HA", "", ha_type_node); | |
1325 | builtin_define_fixed_point_constants ("SA", "", sa_type_node); | |
1326 | builtin_define_fixed_point_constants ("DA", "", da_type_node); | |
1327 | builtin_define_fixed_point_constants ("TA", "", ta_type_node); | |
1328 | builtin_define_fixed_point_constants ("UHA", "", uha_type_node); | |
1329 | builtin_define_fixed_point_constants ("USA", "", usa_type_node); | |
1330 | builtin_define_fixed_point_constants ("UDA", "", uda_type_node); | |
1331 | builtin_define_fixed_point_constants ("UTA", "", uta_type_node); | |
1332 | } | |
1333 | ||
10e48e39 RO |
1334 | /* For libgcc-internal use only. */ |
1335 | if (flag_building_libgcc) | |
53d68b9f | 1336 | { |
66bb34c0 | 1337 | /* Properties of floating-point modes for libgcc2.c. */ |
5c20c4af RS |
1338 | opt_scalar_float_mode mode_iter; |
1339 | FOR_EACH_MODE_IN_CLASS (mode_iter, MODE_FLOAT) | |
66bb34c0 | 1340 | { |
5c20c4af | 1341 | scalar_float_mode mode = mode_iter.require (); |
66bb34c0 | 1342 | const char *name = GET_MODE_NAME (mode); |
54f0224d PM |
1343 | const size_t name_len = strlen (name); |
1344 | char float_h_prefix[16] = ""; | |
66bb34c0 | 1345 | char *macro_name |
54f0224d | 1346 | = XALLOCAVEC (char, name_len + sizeof ("__LIBGCC__MANT_DIG__")); |
66bb34c0 JM |
1347 | sprintf (macro_name, "__LIBGCC_%s_MANT_DIG__", name); |
1348 | builtin_define_with_int_value (macro_name, | |
1349 | REAL_MODE_FORMAT (mode)->p); | |
8cc4b7a2 JM |
1350 | if (!targetm.scalar_mode_supported_p (mode) |
1351 | || !targetm.libgcc_floating_mode_supported_p (mode)) | |
1352 | continue; | |
54f0224d PM |
1353 | macro_name = XALLOCAVEC (char, name_len |
1354 | + sizeof ("__LIBGCC_HAS__MODE__")); | |
8cc4b7a2 JM |
1355 | sprintf (macro_name, "__LIBGCC_HAS_%s_MODE__", name); |
1356 | cpp_define (pfile, macro_name); | |
54f0224d PM |
1357 | macro_name = XALLOCAVEC (char, name_len |
1358 | + sizeof ("__LIBGCC__FUNC_EXT__")); | |
dd69f047 | 1359 | sprintf (macro_name, "__LIBGCC_%s_FUNC_EXT__", name); |
6dc198e3 | 1360 | char suffix[20] = ""; |
dd69f047 | 1361 | if (mode == TYPE_MODE (double_type_node)) |
54f0224d PM |
1362 | { |
1363 | /* Empty suffix correct. */ | |
1364 | memcpy (float_h_prefix, "DBL", 4); | |
1365 | } | |
dd69f047 | 1366 | else if (mode == TYPE_MODE (float_type_node)) |
54f0224d PM |
1367 | { |
1368 | suffix[0] = 'f'; | |
1369 | memcpy (float_h_prefix, "FLT", 4); | |
1370 | } | |
dd69f047 | 1371 | else if (mode == TYPE_MODE (long_double_type_node)) |
54f0224d PM |
1372 | { |
1373 | suffix[0] = 'l'; | |
1374 | memcpy (float_h_prefix, "LDBL", 5); | |
1375 | } | |
dd69f047 | 1376 | else |
6dc198e3 JM |
1377 | { |
1378 | bool found_suffix = false; | |
1379 | for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++) | |
1380 | if (FLOATN_NX_TYPE_NODE (i) != NULL_TREE | |
1381 | && mode == TYPE_MODE (FLOATN_NX_TYPE_NODE (i))) | |
1382 | { | |
1383 | sprintf (suffix, "f%d%s", floatn_nx_types[i].n, | |
1384 | floatn_nx_types[i].extended ? "x" : ""); | |
1385 | found_suffix = true; | |
54f0224d PM |
1386 | sprintf (float_h_prefix, "FLT%d%s", floatn_nx_types[i].n, |
1387 | floatn_nx_types[i].extended ? "X" : ""); | |
6dc198e3 JM |
1388 | break; |
1389 | } | |
1390 | gcc_assert (found_suffix); | |
1391 | } | |
dd69f047 | 1392 | builtin_define_with_value (macro_name, suffix, 0); |
56d8ffc1 JG |
1393 | |
1394 | /* The way __LIBGCC_*_EXCESS_PRECISION__ is used is about | |
1395 | eliminating excess precision from results assigned to | |
1396 | variables - meaning it should be about the implicit excess | |
1397 | precision only. */ | |
9a79452d | 1398 | bool excess_precision = false; |
56d8ffc1 JG |
1399 | machine_mode float16_type_mode = (float16_type_node |
1400 | ? TYPE_MODE (float16_type_node) | |
1401 | : VOIDmode); | |
1402 | switch (targetm.c.excess_precision | |
1403 | (EXCESS_PRECISION_TYPE_IMPLICIT)) | |
1404 | { | |
1405 | case FLT_EVAL_METHOD_UNPREDICTABLE: | |
1406 | case FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE: | |
1407 | excess_precision = (mode == float16_type_mode | |
1408 | || mode == TYPE_MODE (float_type_node) | |
1409 | || mode == TYPE_MODE (double_type_node)); | |
1410 | break; | |
1411 | ||
1412 | case FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE: | |
1413 | excess_precision = (mode == float16_type_mode | |
1414 | || mode == TYPE_MODE (float_type_node)); | |
1415 | break; | |
1416 | case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT: | |
1417 | excess_precision = mode == float16_type_mode; | |
1418 | break; | |
1419 | case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16: | |
1420 | excess_precision = false; | |
1421 | break; | |
1422 | default: | |
1423 | gcc_unreachable (); | |
1424 | } | |
54f0224d PM |
1425 | macro_name = XALLOCAVEC (char, name_len |
1426 | + sizeof ("__LIBGCC__EXCESS_PRECISION__")); | |
9a79452d JM |
1427 | sprintf (macro_name, "__LIBGCC_%s_EXCESS_PRECISION__", name); |
1428 | builtin_define_with_int_value (macro_name, excess_precision); | |
54f0224d PM |
1429 | |
1430 | char val_name[64]; | |
1431 | ||
1432 | macro_name = XALLOCAVEC (char, name_len | |
1433 | + sizeof ("__LIBGCC__EPSILON__")); | |
1434 | sprintf (macro_name, "__LIBGCC_%s_EPSILON__", name); | |
1435 | sprintf (val_name, "__%s_EPSILON__", float_h_prefix); | |
1436 | builtin_define_with_value (macro_name, val_name, 0); | |
1437 | ||
1438 | macro_name = XALLOCAVEC (char, name_len + sizeof ("__LIBGCC__MAX__")); | |
1439 | sprintf (macro_name, "__LIBGCC_%s_MAX__", name); | |
1440 | sprintf (val_name, "__%s_MAX__", float_h_prefix); | |
1441 | builtin_define_with_value (macro_name, val_name, 0); | |
1442 | ||
1443 | macro_name = XALLOCAVEC (char, name_len + sizeof ("__LIBGCC__MIN__")); | |
1444 | sprintf (macro_name, "__LIBGCC_%s_MIN__", name); | |
1445 | sprintf (val_name, "__%s_MIN__", float_h_prefix); | |
1446 | builtin_define_with_value (macro_name, val_name, 0); | |
1447 | ||
1448 | #ifdef HAVE_adddf3 | |
1449 | builtin_define_with_int_value ("__LIBGCC_HAVE_HWDBL__", | |
1450 | HAVE_adddf3); | |
1451 | #endif | |
66bb34c0 JM |
1452 | } |
1453 | ||
53d68b9f JM |
1454 | /* For libgcc crtstuff.c and libgcc2.c. */ |
1455 | builtin_define_with_int_value ("__LIBGCC_EH_TABLES_CAN_BE_READ_ONLY__", | |
1456 | EH_TABLES_CAN_BE_READ_ONLY); | |
1457 | #ifdef EH_FRAME_SECTION_NAME | |
1458 | builtin_define_with_value ("__LIBGCC_EH_FRAME_SECTION_NAME__", | |
1459 | EH_FRAME_SECTION_NAME, 1); | |
53d68b9f JM |
1460 | #endif |
1461 | #ifdef CTORS_SECTION_ASM_OP | |
1462 | builtin_define_with_value ("__LIBGCC_CTORS_SECTION_ASM_OP__", | |
1463 | CTORS_SECTION_ASM_OP, 1); | |
1464 | #endif | |
1465 | #ifdef DTORS_SECTION_ASM_OP | |
1466 | builtin_define_with_value ("__LIBGCC_DTORS_SECTION_ASM_OP__", | |
1467 | DTORS_SECTION_ASM_OP, 1); | |
1468 | #endif | |
1469 | #ifdef TEXT_SECTION_ASM_OP | |
1470 | builtin_define_with_value ("__LIBGCC_TEXT_SECTION_ASM_OP__", | |
1471 | TEXT_SECTION_ASM_OP, 1); | |
1472 | #endif | |
1473 | #ifdef INIT_SECTION_ASM_OP | |
1474 | builtin_define_with_value ("__LIBGCC_INIT_SECTION_ASM_OP__", | |
1475 | INIT_SECTION_ASM_OP, 1); | |
1476 | #endif | |
1477 | #ifdef INIT_ARRAY_SECTION_ASM_OP | |
1478 | /* Despite the name of this target macro, the expansion is not | |
1479 | actually used, and may be empty rather than a string | |
1480 | constant. */ | |
1481 | cpp_define (pfile, "__LIBGCC_INIT_ARRAY_SECTION_ASM_OP__"); | |
1482 | #endif | |
1483 | ||
1484 | /* For libgcc enable-execute-stack.c. */ | |
1485 | builtin_define_with_int_value ("__LIBGCC_TRAMPOLINE_SIZE__", | |
1486 | TRAMPOLINE_SIZE); | |
1487 | ||
1488 | /* For libgcc generic-morestack.c and unwinder code. */ | |
581edfa3 TS |
1489 | if (STACK_GROWS_DOWNWARD) |
1490 | cpp_define (pfile, "__LIBGCC_STACK_GROWS_DOWNWARD__"); | |
53d68b9f JM |
1491 | |
1492 | /* For libgcc unwinder code. */ | |
1493 | #ifdef DONT_USE_BUILTIN_SETJMP | |
1494 | cpp_define (pfile, "__LIBGCC_DONT_USE_BUILTIN_SETJMP__"); | |
1495 | #endif | |
1496 | #ifdef DWARF_ALT_FRAME_RETURN_COLUMN | |
1497 | builtin_define_with_int_value ("__LIBGCC_DWARF_ALT_FRAME_RETURN_COLUMN__", | |
1498 | DWARF_ALT_FRAME_RETURN_COLUMN); | |
1499 | #endif | |
1500 | builtin_define_with_int_value ("__LIBGCC_DWARF_FRAME_REGISTERS__", | |
1501 | DWARF_FRAME_REGISTERS); | |
1502 | #ifdef EH_RETURN_STACKADJ_RTX | |
1503 | cpp_define (pfile, "__LIBGCC_EH_RETURN_STACKADJ_RTX__"); | |
1504 | #endif | |
1505 | #ifdef JMP_BUF_SIZE | |
1506 | builtin_define_with_int_value ("__LIBGCC_JMP_BUF_SIZE__", | |
1507 | JMP_BUF_SIZE); | |
1508 | #endif | |
1509 | builtin_define_with_int_value ("__LIBGCC_STACK_POINTER_REGNUM__", | |
1510 | STACK_POINTER_REGNUM); | |
1511 | ||
1512 | /* For libgcov. */ | |
1513 | builtin_define_with_int_value ("__LIBGCC_VTABLE_USES_DESCRIPTORS__", | |
1514 | TARGET_VTABLE_USES_DESCRIPTORS); | |
8cdcea51 SH |
1515 | builtin_define_with_int_value ("__LIBGCC_GCOV_TYPE_SIZE", |
1516 | targetm.gcov_type_size()); | |
53d68b9f | 1517 | } |
10e48e39 | 1518 | |
cb60f38d NB |
1519 | /* For use in assembly language. */ |
1520 | builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0); | |
1521 | builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0); | |
1522 | ||
1523 | /* Misc. */ | |
da1c7394 ILT |
1524 | if (flag_gnu89_inline) |
1525 | cpp_define (pfile, "__GNUC_GNU_INLINE__"); | |
1526 | else | |
1527 | cpp_define (pfile, "__GNUC_STDC_INLINE__"); | |
1528 | ||
e90acd93 | 1529 | if (flag_no_inline) |
cb60f38d | 1530 | cpp_define (pfile, "__NO_INLINE__"); |
cb60f38d NB |
1531 | |
1532 | if (flag_iso) | |
1533 | cpp_define (pfile, "__STRICT_ANSI__"); | |
1534 | ||
1535 | if (!flag_signed_char) | |
1536 | cpp_define (pfile, "__CHAR_UNSIGNED__"); | |
1537 | ||
8df83eae | 1538 | if (c_dialect_cxx () && TYPE_UNSIGNED (wchar_type_node)) |
cb60f38d NB |
1539 | cpp_define (pfile, "__WCHAR_UNSIGNED__"); |
1540 | ||
62bad7cd | 1541 | cpp_atomic_builtins (pfile); |
425fc685 RE |
1542 | |
1543 | /* Show support for __builtin_speculation_safe_value () if the target | |
1544 | has been updated to fully support it. */ | |
1545 | if (targetm.have_speculation_safe_value (false)) | |
1546 | cpp_define (pfile, "__HAVE_SPECULATION_SAFE_VALUE"); | |
1547 | ||
d4ea4622 | 1548 | #ifdef DWARF2_UNWIND_INFO |
058514b3 | 1549 | if (dwarf2out_do_cfi_asm ()) |
d4ea4622 RH |
1550 | cpp_define (pfile, "__GCC_HAVE_DWARF2_CFI_ASM"); |
1551 | #endif | |
1552 | ||
cb60f38d | 1553 | /* Make the choice of ObjC runtime visible to source code. */ |
37fa72e9 | 1554 | if (c_dialect_objc () && flag_next_runtime) |
cb60f38d NB |
1555 | cpp_define (pfile, "__NEXT_RUNTIME__"); |
1556 | ||
84b8b0e0 | 1557 | /* Show the availability of some target pragmas. */ |
c54d7dc9 | 1558 | cpp_define (pfile, "__PRAGMA_REDEFINE_EXTNAME"); |
84b8b0e0 | 1559 | |
0ffb94cd JW |
1560 | /* Make the choice of the stack protector runtime visible to source code. |
1561 | The macro names and values here were chosen for compatibility with an | |
1562 | earlier implementation, i.e. ProPolice. */ | |
5a99796b | 1563 | if (flag_stack_protect == SPCT_FLAG_EXPLICIT) |
5434dc07 | 1564 | cpp_define (pfile, "__SSP_EXPLICIT__=4"); |
5a99796b | 1565 | if (flag_stack_protect == SPCT_FLAG_STRONG) |
f6bc1c4a | 1566 | cpp_define (pfile, "__SSP_STRONG__=3"); |
5a99796b | 1567 | if (flag_stack_protect == SPCT_FLAG_ALL) |
7d69de61 | 1568 | cpp_define (pfile, "__SSP_ALL__=2"); |
5a99796b | 1569 | else if (flag_stack_protect == SPCT_FLAG_DEFAULT) |
7d69de61 RH |
1570 | cpp_define (pfile, "__SSP__=1"); |
1571 | ||
41dbbb37 | 1572 | if (flag_openacc) |
e464fc90 | 1573 | cpp_define (pfile, "_OPENACC=201711"); |
41dbbb37 | 1574 | |
953ff289 | 1575 | if (flag_openmp) |
d9a6bd32 | 1576 | cpp_define (pfile, "_OPENMP=201511"); |
953ff289 | 1577 | |
78a7c317 DD |
1578 | for (i = 0; i < NUM_INT_N_ENTS; i ++) |
1579 | if (int_n_enabled_p[i]) | |
1580 | { | |
1581 | char buf[15+20]; | |
1582 | sprintf(buf, "__SIZEOF_INT%d__", int_n_data[i].bitsize); | |
1583 | builtin_define_type_sizeof (buf, | |
1584 | int_n_trees[i].signed_type); | |
1585 | } | |
024a85ae AK |
1586 | builtin_define_type_sizeof ("__SIZEOF_WCHAR_T__", wchar_type_node); |
1587 | builtin_define_type_sizeof ("__SIZEOF_WINT_T__", wint_type_node); | |
1588 | builtin_define_type_sizeof ("__SIZEOF_PTRDIFF_T__", | |
1589 | unsigned_ptrdiff_type_node); | |
024a85ae | 1590 | |
cb60f38d NB |
1591 | /* A straightforward target hook doesn't work, because of problems |
1592 | linking that hook's body when part of non-C front ends. */ | |
1593 | # define preprocessing_asm_p() (cpp_get_options (pfile)->lang == CLK_ASM) | |
1594 | # define preprocessing_trad_p() (cpp_get_options (pfile)->traditional) | |
1595 | # define builtin_define(TXT) cpp_define (pfile, TXT) | |
1596 | # define builtin_assert(TXT) cpp_assert (pfile, TXT) | |
1597 | TARGET_CPU_CPP_BUILTINS (); | |
1598 | TARGET_OS_CPP_BUILTINS (); | |
4e2e315f | 1599 | TARGET_OBJFMT_CPP_BUILTINS (); |
63c5b495 MM |
1600 | |
1601 | /* Support the __declspec keyword by turning them into attributes. | |
1602 | Note that the current way we do this may result in a collision | |
1603 | with predefined attributes later on. This can be solved by using | |
1604 | one attribute, say __declspec__, and passing args to it. The | |
1605 | problem with that approach is that args are not accumulated: each | |
1606 | new appearance would clobber any existing args. */ | |
1607 | if (TARGET_DECLSPEC) | |
1608 | builtin_define ("__declspec(x)=__attribute__((x))"); | |
79b87c74 | 1609 | |
589dd995 JJ |
1610 | /* If decimal floating point is supported, tell the user if the |
1611 | alternate format (BID) is used instead of the standard (DPD) | |
1612 | format. */ | |
1613 | if (ENABLE_DECIMAL_FLOAT && ENABLE_DECIMAL_BID_FORMAT) | |
1614 | cpp_define (pfile, "__DECIMAL_BID_FORMAT__"); | |
cb60f38d NB |
1615 | } |
1616 | ||
1617 | /* Pass an object-like macro. If it doesn't lie in the user's | |
1618 | namespace, defines it unconditionally. Otherwise define a version | |
1619 | with two leading underscores, and another version with two leading | |
1620 | and trailing underscores, and define the original only if an ISO | |
1621 | standard was not nominated. | |
1622 | ||
1623 | e.g. passing "unix" defines "__unix", "__unix__" and possibly | |
1624 | "unix". Passing "_mips" defines "__mips", "__mips__" and possibly | |
1625 | "_mips". */ | |
21282b1e | 1626 | void |
35b1a6fa | 1627 | builtin_define_std (const char *macro) |
cb60f38d NB |
1628 | { |
1629 | size_t len = strlen (macro); | |
cceb1885 | 1630 | char *buff = (char *) alloca (len + 5); |
cb60f38d NB |
1631 | char *p = buff + 2; |
1632 | char *q = p + len; | |
1633 | ||
1634 | /* prepend __ (or maybe just _) if in user's namespace. */ | |
1635 | memcpy (p, macro, len + 1); | |
1636 | if (!( *p == '_' && (p[1] == '_' || ISUPPER (p[1])))) | |
1637 | { | |
1638 | if (*p != '_') | |
1639 | *--p = '_'; | |
1640 | if (p[1] != '_') | |
1641 | *--p = '_'; | |
1642 | } | |
1643 | cpp_define (parse_in, p); | |
1644 | ||
1645 | /* If it was in user's namespace... */ | |
1646 | if (p != buff + 2) | |
1647 | { | |
1648 | /* Define the macro with leading and following __. */ | |
1649 | if (q[-1] != '_') | |
1650 | *q++ = '_'; | |
1651 | if (q[-2] != '_') | |
1652 | *q++ = '_'; | |
1653 | *q = '\0'; | |
1654 | cpp_define (parse_in, p); | |
1655 | ||
1656 | /* Finally, define the original macro if permitted. */ | |
1657 | if (!flag_iso) | |
1658 | cpp_define (parse_in, macro); | |
1659 | } | |
1660 | } | |
1661 | ||
1662 | /* Pass an object-like macro and a value to define it to. The third | |
1663 | parameter says whether or not to turn the value into a string | |
1664 | constant. */ | |
1665 | void | |
35b1a6fa | 1666 | builtin_define_with_value (const char *macro, const char *expansion, int is_str) |
cb60f38d NB |
1667 | { |
1668 | char *buf; | |
1669 | size_t mlen = strlen (macro); | |
1670 | size_t elen = strlen (expansion); | |
1671 | size_t extra = 2; /* space for an = and a NUL */ | |
1672 | ||
1673 | if (is_str) | |
53d68b9f JM |
1674 | { |
1675 | char *quoted_expansion = (char *) alloca (elen * 4 + 1); | |
1676 | const char *p; | |
1677 | char *q; | |
1678 | extra += 2; /* space for two quote marks */ | |
1679 | for (p = expansion, q = quoted_expansion; *p; p++) | |
1680 | { | |
1681 | switch (*p) | |
1682 | { | |
1683 | case '\n': | |
1684 | *q++ = '\\'; | |
1685 | *q++ = 'n'; | |
1686 | break; | |
1687 | ||
1688 | case '\t': | |
1689 | *q++ = '\\'; | |
1690 | *q++ = 't'; | |
1691 | break; | |
1692 | ||
1693 | case '\\': | |
1694 | *q++ = '\\'; | |
1695 | *q++ = '\\'; | |
1696 | break; | |
1697 | ||
1698 | case '"': | |
1699 | *q++ = '\\'; | |
1700 | *q++ = '"'; | |
1701 | break; | |
1702 | ||
1703 | default: | |
1704 | if (ISPRINT ((unsigned char) *p)) | |
1705 | *q++ = *p; | |
1706 | else | |
1707 | { | |
1708 | sprintf (q, "\\%03o", (unsigned char) *p); | |
1709 | q += 4; | |
1710 | } | |
1711 | } | |
1712 | } | |
1713 | *q = '\0'; | |
1714 | expansion = quoted_expansion; | |
1715 | elen = q - expansion; | |
1716 | } | |
cb60f38d | 1717 | |
cceb1885 | 1718 | buf = (char *) alloca (mlen + elen + extra); |
cb60f38d NB |
1719 | if (is_str) |
1720 | sprintf (buf, "%s=\"%s\"", macro, expansion); | |
1721 | else | |
1722 | sprintf (buf, "%s=%s", macro, expansion); | |
1723 | ||
1724 | cpp_define (parse_in, buf); | |
1725 | } | |
1726 | ||
cb60f38d NB |
1727 | |
1728 | /* Pass an object-like macro and an integer value to define it to. */ | |
7049e4eb | 1729 | void |
35b1a6fa | 1730 | builtin_define_with_int_value (const char *macro, HOST_WIDE_INT value) |
cb60f38d NB |
1731 | { |
1732 | char *buf; | |
1733 | size_t mlen = strlen (macro); | |
1734 | size_t vlen = 18; | |
1735 | size_t extra = 2; /* space for = and NUL. */ | |
1736 | ||
cceb1885 | 1737 | buf = (char *) alloca (mlen + vlen + extra); |
cb60f38d NB |
1738 | memcpy (buf, macro, mlen); |
1739 | buf[mlen] = '='; | |
1740 | sprintf (buf + mlen + 1, HOST_WIDE_INT_PRINT_DEC, value); | |
1741 | ||
1742 | cpp_define (parse_in, buf); | |
1743 | } | |
1744 | ||
8e680db5 JJ |
1745 | /* builtin_define_with_hex_fp_value is very expensive, so the following |
1746 | array and function allows it to be done lazily when __DBL_MAX__ | |
1747 | etc. is first used. */ | |
1748 | ||
5bca794b | 1749 | struct GTY(()) lazy_hex_fp_value_struct |
8e680db5 JJ |
1750 | { |
1751 | const char *hex_str; | |
ef4bddc2 | 1752 | machine_mode mode; |
8e680db5 JJ |
1753 | int digits; |
1754 | const char *fp_suffix; | |
5bca794b | 1755 | }; |
53723269 JJ |
1756 | /* Number of the expensive to compute macros we should evaluate lazily. |
1757 | Each builtin_define_float_constants invocation calls | |
00be2a5f | 1758 | builtin_define_with_hex_fp_value 5 times and builtin_define_float_constants |
53723269 JJ |
1759 | is called for FLT, DBL, LDBL and up to NUM_FLOATN_NX_TYPES times for |
1760 | FLTNN*. */ | |
00be2a5f | 1761 | #define LAZY_HEX_FP_VALUES_CNT (5 * (3 + NUM_FLOATN_NX_TYPES)) |
53723269 JJ |
1762 | static GTY(()) struct lazy_hex_fp_value_struct |
1763 | lazy_hex_fp_values[LAZY_HEX_FP_VALUES_CNT]; | |
800c0e98 | 1764 | static GTY(()) unsigned lazy_hex_fp_value_count; |
8e680db5 | 1765 | |
800c0e98 NS |
1766 | static void |
1767 | lazy_hex_fp_value (cpp_reader *, cpp_macro *macro, unsigned num) | |
8e680db5 JJ |
1768 | { |
1769 | REAL_VALUE_TYPE real; | |
1770 | char dec_str[64], buf1[256]; | |
8e680db5 | 1771 | |
800c0e98 NS |
1772 | gcc_checking_assert (num < lazy_hex_fp_value_count); |
1773 | ||
1774 | real_from_string (&real, lazy_hex_fp_values[num].hex_str); | |
8e680db5 | 1775 | real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str), |
800c0e98 NS |
1776 | lazy_hex_fp_values[num].digits, 0, |
1777 | lazy_hex_fp_values[num].mode); | |
1778 | ||
1779 | size_t len | |
1780 | = sprintf (buf1, "%s%s", dec_str, lazy_hex_fp_values[num].fp_suffix); | |
1781 | gcc_assert (len < sizeof (buf1)); | |
1782 | for (unsigned idx = 0; idx < macro->count; idx++) | |
1783 | if (macro->exp.tokens[idx].type == CPP_NUMBER) | |
1784 | { | |
1785 | macro->exp.tokens[idx].val.str.len = len; | |
1786 | macro->exp.tokens[idx].val.str.text | |
1787 | = (const unsigned char *) ggc_strdup (buf1); | |
1788 | return; | |
1789 | } | |
1790 | ||
1791 | /* We must have replaced a token. */ | |
1792 | gcc_unreachable (); | |
8e680db5 JJ |
1793 | } |
1794 | ||
cb60f38d NB |
1795 | /* Pass an object-like macro a hexadecimal floating-point value. */ |
1796 | static void | |
35b1a6fa | 1797 | builtin_define_with_hex_fp_value (const char *macro, |
3e479de3 | 1798 | tree type, int digits, |
b8698a0f | 1799 | const char *hex_str, |
264c41ed CD |
1800 | const char *fp_suffix, |
1801 | const char *fp_cast) | |
cb60f38d NB |
1802 | { |
1803 | REAL_VALUE_TYPE real; | |
2004617a | 1804 | char dec_str[64], buf[256], buf1[128], buf2[64]; |
cb60f38d | 1805 | |
8e680db5 | 1806 | /* This is very expensive, so if possible expand them lazily. */ |
53723269 | 1807 | if (lazy_hex_fp_value_count < LAZY_HEX_FP_VALUES_CNT |
8e680db5 | 1808 | && flag_dump_macros == 0 |
5f76ab15 | 1809 | && flag_dump_go_spec == NULL |
8e680db5 JJ |
1810 | && !cpp_get_options (parse_in)->traditional) |
1811 | { | |
8e680db5 | 1812 | if (lazy_hex_fp_value_count == 0) |
800c0e98 | 1813 | cpp_get_callbacks (parse_in)->user_lazy_macro = lazy_hex_fp_value; |
8e680db5 JJ |
1814 | sprintf (buf2, fp_cast, "1.1"); |
1815 | sprintf (buf1, "%s=%s", macro, buf2); | |
1816 | cpp_define (parse_in, buf1); | |
800c0e98 | 1817 | struct cpp_hashnode *node = C_CPP_HASHNODE (get_identifier (macro)); |
5bca794b JJ |
1818 | lazy_hex_fp_values[lazy_hex_fp_value_count].hex_str |
1819 | = ggc_strdup (hex_str); | |
8e680db5 JJ |
1820 | lazy_hex_fp_values[lazy_hex_fp_value_count].mode = TYPE_MODE (type); |
1821 | lazy_hex_fp_values[lazy_hex_fp_value_count].digits = digits; | |
1822 | lazy_hex_fp_values[lazy_hex_fp_value_count].fp_suffix = fp_suffix; | |
800c0e98 | 1823 | cpp_define_lazily (parse_in, node, lazy_hex_fp_value_count++); |
8e680db5 JJ |
1824 | return; |
1825 | } | |
1826 | ||
cb60f38d NB |
1827 | /* Hex values are really cool and convenient, except that they're |
1828 | not supported in strict ISO C90 mode. First, the "p-" sequence | |
1829 | is not valid as part of a preprocessor number. Second, we get a | |
1830 | pedwarn from the preprocessor, which has no context, so we can't | |
1831 | suppress the warning with __extension__. | |
1832 | ||
35b1a6fa | 1833 | So instead what we do is construct the number in hex (because |
cb60f38d NB |
1834 | it's easy to get the exact correct value), parse it as a real, |
1835 | then print it back out as decimal. */ | |
1836 | ||
1837 | real_from_string (&real, hex_str); | |
3e479de3 UW |
1838 | real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str), digits, 0, |
1839 | TYPE_MODE (type)); | |
cb60f38d | 1840 | |
264c41ed CD |
1841 | /* Assemble the macro in the following fashion |
1842 | macro = fp_cast [dec_str fp_suffix] */ | |
2004617a QZ |
1843 | sprintf (buf2, "%s%s", dec_str, fp_suffix); |
1844 | sprintf (buf1, fp_cast, buf2); | |
1845 | sprintf (buf, "%s=%s", macro, buf1); | |
b8698a0f | 1846 | |
2004617a | 1847 | cpp_define (parse_in, buf); |
cb60f38d NB |
1848 | } |
1849 | ||
207bf79d JM |
1850 | /* Return a string constant for the suffix for a value of type TYPE |
1851 | promoted according to the integer promotions. The type must be one | |
1852 | of the standard integer type nodes. */ | |
1853 | ||
1854 | static const char * | |
1855 | type_suffix (tree type) | |
1856 | { | |
1857 | static const char *const suffixes[] = { "", "U", "L", "UL", "LL", "ULL" }; | |
1858 | int unsigned_suffix; | |
1859 | int is_long; | |
78a7c317 | 1860 | int tp = TYPE_PRECISION (type); |
207bf79d JM |
1861 | |
1862 | if (type == long_long_integer_type_node | |
78a7c317 DD |
1863 | || type == long_long_unsigned_type_node |
1864 | || tp > TYPE_PRECISION (long_integer_type_node)) | |
207bf79d JM |
1865 | is_long = 2; |
1866 | else if (type == long_integer_type_node | |
78a7c317 DD |
1867 | || type == long_unsigned_type_node |
1868 | || tp > TYPE_PRECISION (integer_type_node)) | |
207bf79d JM |
1869 | is_long = 1; |
1870 | else if (type == integer_type_node | |
1871 | || type == unsigned_type_node | |
1872 | || type == short_integer_type_node | |
1873 | || type == short_unsigned_type_node | |
1874 | || type == signed_char_type_node | |
1875 | || type == unsigned_char_type_node | |
1876 | /* ??? "char" is not a signed or unsigned integer type and | |
1877 | so is not permitted for the standard typedefs, but some | |
1878 | systems use it anyway. */ | |
1879 | || type == char_type_node) | |
1880 | is_long = 0; | |
1881 | else | |
1882 | gcc_unreachable (); | |
1883 | ||
1884 | unsigned_suffix = TYPE_UNSIGNED (type); | |
1885 | if (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)) | |
1886 | unsigned_suffix = 0; | |
1887 | return suffixes[is_long * 2 + unsigned_suffix]; | |
1888 | } | |
1889 | ||
1890 | /* Define MACRO as a <stdint.h> constant-suffix macro for TYPE. */ | |
1891 | static void | |
1892 | builtin_define_constants (const char *macro, tree type) | |
1893 | { | |
1894 | const char *suffix; | |
1895 | char *buf; | |
1896 | ||
1897 | suffix = type_suffix (type); | |
1898 | ||
1899 | if (suffix[0] == 0) | |
1900 | { | |
1901 | buf = (char *) alloca (strlen (macro) + 6); | |
1902 | sprintf (buf, "%s(c)=c", macro); | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | buf = (char *) alloca (strlen (macro) + 9 + strlen (suffix) + 1); | |
1907 | sprintf (buf, "%s(c)=c ## %s", macro, suffix); | |
1908 | } | |
1909 | ||
1910 | cpp_define (parse_in, buf); | |
1911 | } | |
1912 | ||
1913 | /* Define MAX for TYPE based on the precision of the type. */ | |
1914 | ||
1915 | static void | |
1916 | builtin_define_type_max (const char *macro, tree type) | |
1917 | { | |
1918 | builtin_define_type_minmax (NULL, macro, type); | |
1919 | } | |
1920 | ||
ca49b74e DD |
1921 | /* Given a value with COUNT LSBs set, fill BUF with a hexidecimal |
1922 | representation of that value. For example, a COUNT of 10 would | |
1923 | return "0x3ff". */ | |
1924 | ||
1925 | static void | |
1926 | print_bits_of_hex (char *buf, int bufsz, int count) | |
1927 | { | |
1928 | gcc_assert (bufsz > 3); | |
1929 | *buf++ = '0'; | |
1930 | *buf++ = 'x'; | |
1931 | bufsz -= 2; | |
1932 | ||
1933 | gcc_assert (count > 0); | |
1934 | ||
1935 | switch (count % 4) { | |
1936 | case 0: | |
1937 | break; | |
1938 | case 1: | |
1939 | *buf++ = '1'; | |
1940 | bufsz --; | |
1941 | count -= 1; | |
1942 | break; | |
1943 | case 2: | |
1944 | *buf++ = '3'; | |
1945 | bufsz --; | |
1946 | count -= 2; | |
1947 | break; | |
1948 | case 3: | |
1949 | *buf++ = '7'; | |
1950 | bufsz --; | |
1951 | count -= 3; | |
1952 | break; | |
1953 | } | |
1954 | while (count >= 4) | |
1955 | { | |
1956 | gcc_assert (bufsz > 1); | |
1957 | *buf++ = 'f'; | |
1958 | bufsz --; | |
1959 | count -= 4; | |
1960 | } | |
1961 | gcc_assert (bufsz > 0); | |
1962 | *buf++ = 0; | |
1963 | } | |
1964 | ||
207bf79d JM |
1965 | /* Define MIN_MACRO (if not NULL) and MAX_MACRO for TYPE based on the |
1966 | precision of the type. */ | |
cb60f38d NB |
1967 | |
1968 | static void | |
207bf79d JM |
1969 | builtin_define_type_minmax (const char *min_macro, const char *max_macro, |
1970 | tree type) | |
cb60f38d | 1971 | { |
ca49b74e DD |
1972 | #define PBOH_SZ (MAX_BITSIZE_MODE_ANY_INT/4+4) |
1973 | char value[PBOH_SZ]; | |
1974 | ||
1975 | const char *suffix; | |
cb60f38d | 1976 | char *buf; |
ca49b74e | 1977 | int bits; |
cb60f38d | 1978 | |
ca49b74e DD |
1979 | bits = TYPE_PRECISION (type) + (TYPE_UNSIGNED (type) ? 0 : -1); |
1980 | ||
1981 | print_bits_of_hex (value, PBOH_SZ, bits); | |
cb60f38d | 1982 | |
207bf79d | 1983 | suffix = type_suffix (type); |
cb60f38d | 1984 | |
207bf79d | 1985 | buf = (char *) alloca (strlen (max_macro) + 1 + strlen (value) |
cceb1885 | 1986 | + strlen (suffix) + 1); |
207bf79d | 1987 | sprintf (buf, "%s=%s%s", max_macro, value, suffix); |
cb60f38d NB |
1988 | |
1989 | cpp_define (parse_in, buf); | |
207bf79d JM |
1990 | |
1991 | if (min_macro) | |
1992 | { | |
1993 | if (TYPE_UNSIGNED (type)) | |
1994 | { | |
1995 | buf = (char *) alloca (strlen (min_macro) + 2 + strlen (suffix) + 1); | |
1996 | sprintf (buf, "%s=0%s", min_macro, suffix); | |
1997 | } | |
1998 | else | |
1999 | { | |
2000 | buf = (char *) alloca (strlen (min_macro) + 3 | |
2001 | + strlen (max_macro) + 6); | |
2002 | sprintf (buf, "%s=(-%s - 1)", min_macro, max_macro); | |
2003 | } | |
2004 | cpp_define (parse_in, buf); | |
2005 | } | |
cb60f38d | 2006 | } |
5bca794b | 2007 | |
c65248cb JM |
2008 | /* Define WIDTH_MACRO for the width of TYPE. If TYPE2 is not NULL, |
2009 | both types must have the same width. */ | |
2010 | ||
2011 | static void | |
2012 | builtin_define_type_width (const char *width_macro, tree type, tree type2) | |
2013 | { | |
2014 | if (type2 != NULL_TREE) | |
2015 | gcc_assert (TYPE_PRECISION (type) == TYPE_PRECISION (type2)); | |
2016 | builtin_define_with_int_value (width_macro, TYPE_PRECISION (type)); | |
2017 | } | |
2018 | ||
5bca794b | 2019 | #include "gt-c-family-c-cppbuiltin.h" |