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cb60f38d | 1 | /* Define builtin-in macros for the C family front ends. |
10e48e39 | 2 | Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
da1c7394 | 3 | Free Software Foundation, Inc. |
cb60f38d NB |
4 | |
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
cb60f38d NB |
10 | version. |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
cb60f38d NB |
20 | |
21 | #include "config.h" | |
22 | #include "system.h" | |
23 | #include "coretypes.h" | |
24 | #include "tm.h" | |
25 | #include "tree.h" | |
a757585a | 26 | #include "version.h" |
cb60f38d | 27 | #include "flags.h" |
cb60f38d NB |
28 | #include "c-common.h" |
29 | #include "c-pragma.h" | |
30 | #include "output.h" | |
f4ce02c5 | 31 | #include "debug.h" /* For dwarf2out_do_cfi_asm. */ |
f4ce02c5 | 32 | #include "tm_p.h" /* For TARGET_CPU_CPP_BUILTINS & friends. */ |
84b8b0e0 | 33 | #include "target.h" |
677f3fa8 | 34 | #include "common/common-target.h" |
8e680db5 | 35 | #include "cpp-id-data.h" |
82a1c2fe | 36 | #include "cppbuiltin.h" |
cb60f38d | 37 | |
4e2e315f NB |
38 | #ifndef TARGET_OS_CPP_BUILTINS |
39 | # define TARGET_OS_CPP_BUILTINS() | |
40 | #endif | |
41 | ||
42 | #ifndef TARGET_OBJFMT_CPP_BUILTINS | |
43 | # define TARGET_OBJFMT_CPP_BUILTINS() | |
44 | #endif | |
45 | ||
cb60f38d NB |
46 | #ifndef REGISTER_PREFIX |
47 | #define REGISTER_PREFIX "" | |
48 | #endif | |
49 | ||
21282b1e | 50 | /* Non-static as some targets don't use it. */ |
35b1a6fa | 51 | void builtin_define_std (const char *) ATTRIBUTE_UNUSED; |
35b1a6fa AJ |
52 | static void builtin_define_with_int_value (const char *, HOST_WIDE_INT); |
53 | static void builtin_define_with_hex_fp_value (const char *, tree, | |
54 | int, const char *, | |
264c41ed | 55 | const char *, |
35b1a6fa | 56 | const char *); |
85291069 | 57 | static void builtin_define_stdint_macros (void); |
207bf79d JM |
58 | static void builtin_define_constants (const char *, tree); |
59 | static void builtin_define_type_max (const char *, tree); | |
60 | static void builtin_define_type_minmax (const char *, const char *, tree); | |
024a85ae | 61 | static void builtin_define_type_sizeof (const char *, tree); |
b8698a0f | 62 | static void builtin_define_float_constants (const char *, |
1b1562a5 | 63 | const char *, |
264c41ed CD |
64 | const char *, |
65 | const char *, | |
35b1a6fa | 66 | tree); |
cb60f38d | 67 | |
0069111f MM |
68 | /* Return true if MODE provides a fast multiply/add (FMA) builtin function. |
69 | Originally this function used the fma optab, but that doesn't work with | |
70 | -save-temps, so just rely on the HAVE_fma macros for the standard floating | |
71 | point types. */ | |
72 | ||
73 | static bool | |
74 | mode_has_fma (enum machine_mode mode) | |
75 | { | |
76 | switch (mode) | |
77 | { | |
78 | #ifdef HAVE_fmasf4 | |
79 | case SFmode: | |
80 | return !!HAVE_fmasf4; | |
81 | #endif | |
82 | ||
83 | #ifdef HAVE_fmadf4 | |
84 | case DFmode: | |
85 | return !!HAVE_fmadf4; | |
86 | #endif | |
87 | ||
88 | #ifdef HAVE_fmaxf4 | |
89 | case XFmode: | |
90 | return !!HAVE_fmaxf4; | |
91 | #endif | |
92 | ||
93 | #ifdef HAVE_fmatf4 | |
94 | case TFmode: | |
95 | return !!HAVE_fmatf4; | |
96 | #endif | |
97 | ||
98 | default: | |
99 | break; | |
100 | } | |
101 | ||
102 | return false; | |
103 | } | |
104 | ||
024a85ae AK |
105 | /* Define NAME with value TYPE size_unit. */ |
106 | static void | |
107 | builtin_define_type_sizeof (const char *name, tree type) | |
108 | { | |
109 | builtin_define_with_int_value (name, | |
110 | tree_low_cst (TYPE_SIZE_UNIT (type), 1)); | |
111 | } | |
112 | ||
264c41ed CD |
113 | /* Define the float.h constants for TYPE using NAME_PREFIX, FP_SUFFIX, |
114 | and FP_CAST. */ | |
cb60f38d | 115 | static void |
b8698a0f L |
116 | builtin_define_float_constants (const char *name_prefix, |
117 | const char *fp_suffix, | |
118 | const char *fp_cast, | |
1b1562a5 | 119 | const char *fma_suffix, |
264c41ed | 120 | tree type) |
cb60f38d NB |
121 | { |
122 | /* Used to convert radix-based values to base 10 values in several cases. | |
123 | ||
124 | In the max_exp -> max_10_exp conversion for 128-bit IEEE, we need at | |
125 | least 6 significant digits for correct results. Using the fraction | |
126 | formed by (log(2)*1e6)/(log(10)*1e6) overflows a 32-bit integer as an | |
127 | intermediate; perhaps someone can find a better approximation, in the | |
128 | mean time, I suspect using doubles won't harm the bootstrap here. */ | |
129 | ||
130 | const double log10_2 = .30102999566398119521; | |
131 | double log10_b; | |
132 | const struct real_format *fmt; | |
8ce94e44 | 133 | const struct real_format *ldfmt; |
cb60f38d NB |
134 | |
135 | char name[64], buf[128]; | |
136 | int dig, min_10_exp, max_10_exp; | |
137 | int decimal_dig; | |
2778d766 | 138 | int type_decimal_dig; |
cb60f38d | 139 | |
70a01792 | 140 | fmt = REAL_MODE_FORMAT (TYPE_MODE (type)); |
9a8ce21f | 141 | gcc_assert (fmt->b != 10); |
8ce94e44 JM |
142 | ldfmt = REAL_MODE_FORMAT (TYPE_MODE (long_double_type_node)); |
143 | gcc_assert (ldfmt->b != 10); | |
cb60f38d NB |
144 | |
145 | /* The radix of the exponent representation. */ | |
146 | if (type == float_type_node) | |
147 | builtin_define_with_int_value ("__FLT_RADIX__", fmt->b); | |
4d8a8a0a | 148 | log10_b = log10_2; |
cb60f38d NB |
149 | |
150 | /* The number of radix digits, p, in the floating-point significand. */ | |
151 | sprintf (name, "__%s_MANT_DIG__", name_prefix); | |
152 | builtin_define_with_int_value (name, fmt->p); | |
153 | ||
154 | /* The number of decimal digits, q, such that any floating-point number | |
155 | with q decimal digits can be rounded into a floating-point number with | |
156 | p radix b digits and back again without change to the q decimal digits, | |
157 | ||
158 | p log10 b if b is a power of 10 | |
35b1a6fa | 159 | floor((p - 1) log10 b) otherwise |
cb60f38d NB |
160 | */ |
161 | dig = (fmt->p - 1) * log10_b; | |
162 | sprintf (name, "__%s_DIG__", name_prefix); | |
163 | builtin_define_with_int_value (name, dig); | |
164 | ||
165 | /* The minimum negative int x such that b**(x-1) is a normalized float. */ | |
166 | sprintf (name, "__%s_MIN_EXP__", name_prefix); | |
167 | sprintf (buf, "(%d)", fmt->emin); | |
168 | builtin_define_with_value (name, buf, 0); | |
169 | ||
170 | /* The minimum negative int x such that 10**x is a normalized float, | |
171 | ||
172 | ceil (log10 (b ** (emin - 1))) | |
173 | = ceil (log10 (b) * (emin - 1)) | |
174 | ||
175 | Recall that emin is negative, so the integer truncation calculates | |
176 | the ceiling, not the floor, in this case. */ | |
177 | min_10_exp = (fmt->emin - 1) * log10_b; | |
178 | sprintf (name, "__%s_MIN_10_EXP__", name_prefix); | |
179 | sprintf (buf, "(%d)", min_10_exp); | |
180 | builtin_define_with_value (name, buf, 0); | |
181 | ||
182 | /* The maximum int x such that b**(x-1) is a representable float. */ | |
183 | sprintf (name, "__%s_MAX_EXP__", name_prefix); | |
184 | builtin_define_with_int_value (name, fmt->emax); | |
185 | ||
186 | /* The maximum int x such that 10**x is in the range of representable | |
187 | finite floating-point numbers, | |
188 | ||
189 | floor (log10((1 - b**-p) * b**emax)) | |
190 | = floor (log10(1 - b**-p) + log10(b**emax)) | |
191 | = floor (log10(1 - b**-p) + log10(b)*emax) | |
192 | ||
193 | The safest thing to do here is to just compute this number. But since | |
194 | we don't link cc1 with libm, we cannot. We could implement log10 here | |
195 | a series expansion, but that seems too much effort because: | |
196 | ||
197 | Note that the first term, for all extant p, is a number exceedingly close | |
198 | to zero, but slightly negative. Note that the second term is an integer | |
199 | scaling an irrational number, and that because of the floor we are only | |
200 | interested in its integral portion. | |
201 | ||
202 | In order for the first term to have any effect on the integral portion | |
203 | of the second term, the second term has to be exceedingly close to an | |
204 | integer itself (e.g. 123.000000000001 or something). Getting a result | |
205 | that close to an integer requires that the irrational multiplicand have | |
206 | a long series of zeros in its expansion, which doesn't occur in the | |
207 | first 20 digits or so of log10(b). | |
208 | ||
209 | Hand-waving aside, crunching all of the sets of constants above by hand | |
210 | does not yield a case for which the first term is significant, which | |
211 | in the end is all that matters. */ | |
212 | max_10_exp = fmt->emax * log10_b; | |
213 | sprintf (name, "__%s_MAX_10_EXP__", name_prefix); | |
214 | builtin_define_with_int_value (name, max_10_exp); | |
215 | ||
216 | /* The number of decimal digits, n, such that any floating-point number | |
217 | can be rounded to n decimal digits and back again without change to | |
35b1a6fa | 218 | the value. |
cb60f38d NB |
219 | |
220 | p * log10(b) if b is a power of 10 | |
221 | ceil(1 + p * log10(b)) otherwise | |
222 | ||
223 | The only macro we care about is this number for the widest supported | |
224 | floating type, but we want this value for rendering constants below. */ | |
225 | { | |
8ce94e44 JM |
226 | double d_decimal_dig |
227 | = 1 + (fmt->p < ldfmt->p ? ldfmt->p : fmt->p) * log10_b; | |
cb60f38d NB |
228 | decimal_dig = d_decimal_dig; |
229 | if (decimal_dig < d_decimal_dig) | |
230 | decimal_dig++; | |
231 | } | |
2778d766 JM |
232 | /* Similar, for this type rather than long double. */ |
233 | { | |
234 | double type_d_decimal_dig = 1 + fmt->p * log10_b; | |
235 | type_decimal_dig = type_d_decimal_dig; | |
236 | if (type_decimal_dig < type_d_decimal_dig) | |
237 | type_decimal_dig++; | |
238 | } | |
cb60f38d NB |
239 | if (type == long_double_type_node) |
240 | builtin_define_with_int_value ("__DECIMAL_DIG__", decimal_dig); | |
2778d766 JM |
241 | else |
242 | { | |
243 | sprintf (name, "__%s_DECIMAL_DIG__", name_prefix); | |
244 | builtin_define_with_int_value (name, type_decimal_dig); | |
245 | } | |
cb60f38d NB |
246 | |
247 | /* Since, for the supported formats, B is always a power of 2, we | |
248 | construct the following numbers directly as a hexadecimal | |
249 | constants. */ | |
7faa1bbb | 250 | get_max_float (fmt, buf, sizeof (buf)); |
b8698a0f | 251 | |
cb60f38d | 252 | sprintf (name, "__%s_MAX__", name_prefix); |
264c41ed | 253 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d NB |
254 | |
255 | /* The minimum normalized positive floating-point number, | |
256 | b**(emin-1). */ | |
257 | sprintf (name, "__%s_MIN__", name_prefix); | |
4d8a8a0a | 258 | sprintf (buf, "0x1p%d", fmt->emin - 1); |
264c41ed | 259 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d NB |
260 | |
261 | /* The difference between 1 and the least value greater than 1 that is | |
262 | representable in the given floating point type, b**(1-p). */ | |
263 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
59d7d767 GK |
264 | if (fmt->pnan < fmt->p) |
265 | /* This is an IBM extended double format, so 1.0 + any double is | |
266 | representable precisely. */ | |
4d8a8a0a | 267 | sprintf (buf, "0x1p%d", fmt->emin - fmt->p); |
c22cacf3 | 268 | else |
4d8a8a0a | 269 | sprintf (buf, "0x1p%d", 1 - fmt->p); |
264c41ed | 270 | builtin_define_with_hex_fp_value (name, type, decimal_dig, buf, fp_suffix, fp_cast); |
cb60f38d NB |
271 | |
272 | /* For C++ std::numeric_limits<T>::denorm_min. The minimum denormalized | |
273 | positive floating-point number, b**(emin-p). Zero for formats that | |
274 | don't support denormals. */ | |
275 | sprintf (name, "__%s_DENORM_MIN__", name_prefix); | |
276 | if (fmt->has_denorm) | |
277 | { | |
4d8a8a0a | 278 | sprintf (buf, "0x1p%d", fmt->emin - fmt->p); |
cb60f38d | 279 | builtin_define_with_hex_fp_value (name, type, decimal_dig, |
264c41ed | 280 | buf, fp_suffix, fp_cast); |
cb60f38d NB |
281 | } |
282 | else | |
283 | { | |
284 | sprintf (buf, "0.0%s", fp_suffix); | |
285 | builtin_define_with_value (name, buf, 0); | |
286 | } | |
287 | ||
264c41ed CD |
288 | sprintf (name, "__%s_HAS_DENORM__", name_prefix); |
289 | builtin_define_with_value (name, fmt->has_denorm ? "1" : "0", 0); | |
290 | ||
cb60f38d NB |
291 | /* For C++ std::numeric_limits<T>::has_infinity. */ |
292 | sprintf (name, "__%s_HAS_INFINITY__", name_prefix); | |
35b1a6fa | 293 | builtin_define_with_int_value (name, |
cb60f38d NB |
294 | MODE_HAS_INFINITIES (TYPE_MODE (type))); |
295 | /* For C++ std::numeric_limits<T>::has_quiet_NaN. We do not have a | |
296 | predicate to distinguish a target that has both quiet and | |
297 | signalling NaNs from a target that has only quiet NaNs or only | |
298 | signalling NaNs, so we assume that a target that has any kind of | |
299 | NaN has quiet NaNs. */ | |
300 | sprintf (name, "__%s_HAS_QUIET_NAN__", name_prefix); | |
301 | builtin_define_with_int_value (name, MODE_HAS_NANS (TYPE_MODE (type))); | |
1b1562a5 MM |
302 | |
303 | /* Note whether we have fast FMA. */ | |
304 | if (mode_has_fma (TYPE_MODE (type))) | |
305 | { | |
306 | sprintf (name, "__FP_FAST_FMA%s", fma_suffix); | |
307 | builtin_define_with_int_value (name, 1); | |
308 | } | |
cb60f38d NB |
309 | } |
310 | ||
9a8ce21f JG |
311 | /* Define __DECx__ constants for TYPE using NAME_PREFIX and SUFFIX. */ |
312 | static void | |
b8698a0f L |
313 | builtin_define_decimal_float_constants (const char *name_prefix, |
314 | const char *suffix, | |
9a8ce21f JG |
315 | tree type) |
316 | { | |
317 | const struct real_format *fmt; | |
318 | char name[64], buf[128], *p; | |
319 | int digits; | |
320 | ||
321 | fmt = REAL_MODE_FORMAT (TYPE_MODE (type)); | |
322 | ||
323 | /* The number of radix digits, p, in the significand. */ | |
324 | sprintf (name, "__%s_MANT_DIG__", name_prefix); | |
325 | builtin_define_with_int_value (name, fmt->p); | |
326 | ||
327 | /* The minimum negative int x such that b**(x-1) is a normalized float. */ | |
328 | sprintf (name, "__%s_MIN_EXP__", name_prefix); | |
329 | sprintf (buf, "(%d)", fmt->emin); | |
330 | builtin_define_with_value (name, buf, 0); | |
331 | ||
332 | /* The maximum int x such that b**(x-1) is a representable float. */ | |
333 | sprintf (name, "__%s_MAX_EXP__", name_prefix); | |
334 | builtin_define_with_int_value (name, fmt->emax); | |
335 | ||
336 | /* Compute the minimum representable value. */ | |
337 | sprintf (name, "__%s_MIN__", name_prefix); | |
c52ec948 | 338 | sprintf (buf, "1E%d%s", fmt->emin - 1, suffix); |
b8698a0f | 339 | builtin_define_with_value (name, buf, 0); |
9a8ce21f JG |
340 | |
341 | /* Compute the maximum representable value. */ | |
342 | sprintf (name, "__%s_MAX__", name_prefix); | |
343 | p = buf; | |
344 | for (digits = fmt->p; digits; digits--) | |
345 | { | |
346 | *p++ = '9'; | |
347 | if (digits == fmt->p) | |
348 | *p++ = '.'; | |
349 | } | |
350 | *p = 0; | |
c52ec948 JJ |
351 | /* fmt->p plus 1, to account for the decimal point and fmt->emax |
352 | minus 1 because the digits are nines, not 1.0. */ | |
b8698a0f | 353 | sprintf (&buf[fmt->p + 1], "E%d%s", fmt->emax - 1, suffix); |
9a8ce21f JG |
354 | builtin_define_with_value (name, buf, 0); |
355 | ||
356 | /* Compute epsilon (the difference between 1 and least value greater | |
357 | than 1 representable). */ | |
358 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
359 | sprintf (buf, "1E-%d%s", fmt->p - 1, suffix); | |
360 | builtin_define_with_value (name, buf, 0); | |
361 | ||
c52ec948 JJ |
362 | /* Minimum subnormal positive decimal value. */ |
363 | sprintf (name, "__%s_SUBNORMAL_MIN__", name_prefix); | |
9a8ce21f JG |
364 | p = buf; |
365 | for (digits = fmt->p; digits > 1; digits--) | |
366 | { | |
367 | *p++ = '0'; | |
368 | if (digits == fmt->p) | |
369 | *p++ = '.'; | |
370 | } | |
371 | *p = 0; | |
b8698a0f | 372 | sprintf (&buf[fmt->p], "1E%d%s", fmt->emin - 1, suffix); |
9a8ce21f JG |
373 | builtin_define_with_value (name, buf, 0); |
374 | } | |
375 | ||
0f996086 CF |
376 | /* Define fixed-point constants for TYPE using NAME_PREFIX and SUFFIX. */ |
377 | ||
378 | static void | |
379 | builtin_define_fixed_point_constants (const char *name_prefix, | |
380 | const char *suffix, | |
381 | tree type) | |
382 | { | |
383 | char name[64], buf[256], *new_buf; | |
384 | int i, mod; | |
385 | ||
386 | sprintf (name, "__%s_FBIT__", name_prefix); | |
387 | builtin_define_with_int_value (name, TYPE_FBIT (type)); | |
388 | ||
389 | sprintf (name, "__%s_IBIT__", name_prefix); | |
390 | builtin_define_with_int_value (name, TYPE_IBIT (type)); | |
391 | ||
392 | /* If there is no suffix, defines are for fixed-point modes. | |
393 | We just return. */ | |
394 | if (strcmp (suffix, "") == 0) | |
395 | return; | |
396 | ||
397 | if (TYPE_UNSIGNED (type)) | |
398 | { | |
399 | sprintf (name, "__%s_MIN__", name_prefix); | |
400 | sprintf (buf, "0.0%s", suffix); | |
401 | builtin_define_with_value (name, buf, 0); | |
402 | } | |
403 | else | |
404 | { | |
405 | sprintf (name, "__%s_MIN__", name_prefix); | |
406 | if (ALL_ACCUM_MODE_P (TYPE_MODE (type))) | |
407 | sprintf (buf, "(-0X1P%d%s-0X1P%d%s)", TYPE_IBIT (type) - 1, suffix, | |
408 | TYPE_IBIT (type) - 1, suffix); | |
409 | else | |
410 | sprintf (buf, "(-0.5%s-0.5%s)", suffix, suffix); | |
411 | builtin_define_with_value (name, buf, 0); | |
412 | } | |
413 | ||
414 | sprintf (name, "__%s_MAX__", name_prefix); | |
415 | sprintf (buf, "0X"); | |
416 | new_buf = buf + 2; | |
417 | mod = (TYPE_FBIT (type) + TYPE_IBIT (type)) % 4; | |
418 | if (mod) | |
419 | sprintf (new_buf++, "%x", (1 << mod) - 1); | |
420 | for (i = 0; i < (TYPE_FBIT (type) + TYPE_IBIT (type)) / 4; i++) | |
421 | sprintf (new_buf++, "F"); | |
422 | sprintf (new_buf, "P-%d%s", TYPE_FBIT (type), suffix); | |
423 | builtin_define_with_value (name, buf, 0); | |
424 | ||
425 | sprintf (name, "__%s_EPSILON__", name_prefix); | |
426 | sprintf (buf, "0x1P-%d%s", TYPE_FBIT (type), suffix); | |
427 | builtin_define_with_value (name, buf, 0); | |
428 | } | |
429 | ||
207bf79d | 430 | /* Define macros used by <stdint.h>. */ |
85291069 JM |
431 | static void |
432 | builtin_define_stdint_macros (void) | |
433 | { | |
207bf79d JM |
434 | builtin_define_type_max ("__INTMAX_MAX__", intmax_type_node); |
435 | builtin_define_constants ("__INTMAX_C", intmax_type_node); | |
436 | builtin_define_type_max ("__UINTMAX_MAX__", uintmax_type_node); | |
437 | builtin_define_constants ("__UINTMAX_C", uintmax_type_node); | |
438 | if (sig_atomic_type_node) | |
439 | builtin_define_type_minmax ("__SIG_ATOMIC_MIN__", "__SIG_ATOMIC_MAX__", | |
440 | sig_atomic_type_node); | |
441 | if (int8_type_node) | |
442 | builtin_define_type_max ("__INT8_MAX__", int8_type_node); | |
443 | if (int16_type_node) | |
444 | builtin_define_type_max ("__INT16_MAX__", int16_type_node); | |
445 | if (int32_type_node) | |
446 | builtin_define_type_max ("__INT32_MAX__", int32_type_node); | |
447 | if (int64_type_node) | |
448 | builtin_define_type_max ("__INT64_MAX__", int64_type_node); | |
449 | if (uint8_type_node) | |
450 | builtin_define_type_max ("__UINT8_MAX__", uint8_type_node); | |
451 | if (uint16_type_node) | |
452 | builtin_define_type_max ("__UINT16_MAX__", uint16_type_node); | |
453 | if (c_uint32_type_node) | |
454 | builtin_define_type_max ("__UINT32_MAX__", c_uint32_type_node); | |
455 | if (c_uint64_type_node) | |
456 | builtin_define_type_max ("__UINT64_MAX__", c_uint64_type_node); | |
457 | if (int_least8_type_node) | |
458 | { | |
459 | builtin_define_type_max ("__INT_LEAST8_MAX__", int_least8_type_node); | |
460 | builtin_define_constants ("__INT8_C", int_least8_type_node); | |
461 | } | |
462 | if (int_least16_type_node) | |
463 | { | |
464 | builtin_define_type_max ("__INT_LEAST16_MAX__", int_least16_type_node); | |
465 | builtin_define_constants ("__INT16_C", int_least16_type_node); | |
466 | } | |
467 | if (int_least32_type_node) | |
468 | { | |
469 | builtin_define_type_max ("__INT_LEAST32_MAX__", int_least32_type_node); | |
470 | builtin_define_constants ("__INT32_C", int_least32_type_node); | |
471 | } | |
472 | if (int_least64_type_node) | |
473 | { | |
474 | builtin_define_type_max ("__INT_LEAST64_MAX__", int_least64_type_node); | |
475 | builtin_define_constants ("__INT64_C", int_least64_type_node); | |
476 | } | |
477 | if (uint_least8_type_node) | |
478 | { | |
479 | builtin_define_type_max ("__UINT_LEAST8_MAX__", uint_least8_type_node); | |
480 | builtin_define_constants ("__UINT8_C", uint_least8_type_node); | |
481 | } | |
482 | if (uint_least16_type_node) | |
483 | { | |
484 | builtin_define_type_max ("__UINT_LEAST16_MAX__", uint_least16_type_node); | |
485 | builtin_define_constants ("__UINT16_C", uint_least16_type_node); | |
486 | } | |
487 | if (uint_least32_type_node) | |
488 | { | |
489 | builtin_define_type_max ("__UINT_LEAST32_MAX__", uint_least32_type_node); | |
490 | builtin_define_constants ("__UINT32_C", uint_least32_type_node); | |
491 | } | |
492 | if (uint_least64_type_node) | |
493 | { | |
494 | builtin_define_type_max ("__UINT_LEAST64_MAX__", uint_least64_type_node); | |
495 | builtin_define_constants ("__UINT64_C", uint_least64_type_node); | |
496 | } | |
497 | if (int_fast8_type_node) | |
498 | builtin_define_type_max ("__INT_FAST8_MAX__", int_fast8_type_node); | |
499 | if (int_fast16_type_node) | |
500 | builtin_define_type_max ("__INT_FAST16_MAX__", int_fast16_type_node); | |
501 | if (int_fast32_type_node) | |
502 | builtin_define_type_max ("__INT_FAST32_MAX__", int_fast32_type_node); | |
503 | if (int_fast64_type_node) | |
504 | builtin_define_type_max ("__INT_FAST64_MAX__", int_fast64_type_node); | |
505 | if (uint_fast8_type_node) | |
506 | builtin_define_type_max ("__UINT_FAST8_MAX__", uint_fast8_type_node); | |
507 | if (uint_fast16_type_node) | |
508 | builtin_define_type_max ("__UINT_FAST16_MAX__", uint_fast16_type_node); | |
509 | if (uint_fast32_type_node) | |
510 | builtin_define_type_max ("__UINT_FAST32_MAX__", uint_fast32_type_node); | |
511 | if (uint_fast64_type_node) | |
512 | builtin_define_type_max ("__UINT_FAST64_MAX__", uint_fast64_type_node); | |
513 | if (intptr_type_node) | |
514 | builtin_define_type_max ("__INTPTR_MAX__", intptr_type_node); | |
515 | if (uintptr_type_node) | |
516 | builtin_define_type_max ("__UINTPTR_MAX__", uintptr_type_node); | |
85291069 JM |
517 | } |
518 | ||
ab442df7 MM |
519 | /* Adjust the optimization macros when a #pragma GCC optimization is done to |
520 | reflect the current level. */ | |
521 | void | |
522 | c_cpp_builtins_optimize_pragma (cpp_reader *pfile, tree prev_tree, | |
523 | tree cur_tree) | |
524 | { | |
525 | struct cl_optimization *prev = TREE_OPTIMIZATION (prev_tree); | |
526 | struct cl_optimization *cur = TREE_OPTIMIZATION (cur_tree); | |
527 | bool prev_fast_math; | |
528 | bool cur_fast_math; | |
529 | ||
530 | /* -undef turns off target-specific built-ins. */ | |
531 | if (flag_undef) | |
532 | return; | |
533 | ||
534 | /* Other target-independent built-ins determined by command-line | |
535 | options. */ | |
e3339d0f | 536 | if (!prev->x_optimize_size && cur->x_optimize_size) |
ab442df7 | 537 | cpp_define (pfile, "__OPTIMIZE_SIZE__"); |
e3339d0f | 538 | else if (prev->x_optimize_size && !cur->x_optimize_size) |
ab442df7 MM |
539 | cpp_undef (pfile, "__OPTIMIZE_SIZE__"); |
540 | ||
e3339d0f | 541 | if (!prev->x_optimize && cur->x_optimize) |
ab442df7 | 542 | cpp_define (pfile, "__OPTIMIZE__"); |
e3339d0f | 543 | else if (prev->x_optimize && !cur->x_optimize) |
ab442df7 MM |
544 | cpp_undef (pfile, "__OPTIMIZE__"); |
545 | ||
546 | prev_fast_math = fast_math_flags_struct_set_p (prev); | |
547 | cur_fast_math = fast_math_flags_struct_set_p (cur); | |
548 | if (!prev_fast_math && cur_fast_math) | |
549 | cpp_define (pfile, "__FAST_MATH__"); | |
550 | else if (prev_fast_math && !cur_fast_math) | |
551 | cpp_undef (pfile, "__FAST_MATH__"); | |
552 | ||
e3339d0f | 553 | if (!prev->x_flag_signaling_nans && cur->x_flag_signaling_nans) |
ab442df7 | 554 | cpp_define (pfile, "__SUPPORT_SNAN__"); |
e3339d0f | 555 | else if (prev->x_flag_signaling_nans && !cur->x_flag_signaling_nans) |
ab442df7 MM |
556 | cpp_undef (pfile, "__SUPPORT_SNAN__"); |
557 | ||
e3339d0f | 558 | if (!prev->x_flag_finite_math_only && cur->x_flag_finite_math_only) |
ab442df7 MM |
559 | { |
560 | cpp_undef (pfile, "__FINITE_MATH_ONLY__"); | |
561 | cpp_define (pfile, "__FINITE_MATH_ONLY__=1"); | |
562 | } | |
0e3fdb48 | 563 | else if (prev->x_flag_finite_math_only && !cur->x_flag_finite_math_only) |
ab442df7 MM |
564 | { |
565 | cpp_undef (pfile, "__FINITE_MATH_ONLY__"); | |
566 | cpp_define (pfile, "__FINITE_MATH_ONLY__=0"); | |
567 | } | |
568 | } | |
569 | ||
570 | ||
cb60f38d NB |
571 | /* Hook that registers front end and target-specific built-ins. */ |
572 | void | |
35b1a6fa | 573 | c_cpp_builtins (cpp_reader *pfile) |
cb60f38d NB |
574 | { |
575 | /* -undef turns off target-specific built-ins. */ | |
576 | if (flag_undef) | |
577 | return; | |
578 | ||
82a1c2fe FXC |
579 | define_language_independent_builtin_macros (pfile); |
580 | ||
581 | if (c_dialect_cxx ()) | |
582 | { | |
583 | int major; | |
584 | parse_basever (&major, NULL, NULL); | |
585 | cpp_define_formatted (pfile, "__GNUG__=%d", major); | |
586 | } | |
cb60f38d NB |
587 | |
588 | /* For stddef.h. They require macros defined in c-common.c. */ | |
589 | c_stddef_cpp_builtins (); | |
590 | ||
37fa72e9 | 591 | if (c_dialect_cxx ()) |
cb60f38d | 592 | { |
c22cacf3 | 593 | if (flag_weak && SUPPORTS_ONE_ONLY) |
cb60f38d NB |
594 | cpp_define (pfile, "__GXX_WEAK__=1"); |
595 | else | |
596 | cpp_define (pfile, "__GXX_WEAK__=0"); | |
cb60f38d NB |
597 | if (warn_deprecated) |
598 | cpp_define (pfile, "__DEPRECATED"); | |
ba551ec2 PC |
599 | if (flag_rtti) |
600 | cpp_define (pfile, "__GXX_RTTI"); | |
c1ae8be5 | 601 | if (cxx_dialect == cxx0x) |
c573f4d5 | 602 | cpp_define (pfile, "__GXX_EXPERIMENTAL_CXX0X__"); |
cb60f38d | 603 | } |
6cd77c3f RH |
604 | /* Note that we define this for C as well, so that we know if |
605 | __attribute__((cleanup)) will interface with EH. */ | |
2288bdbb RH |
606 | if (flag_exceptions) |
607 | cpp_define (pfile, "__EXCEPTIONS"); | |
cb60f38d | 608 | |
e0a21ab9 | 609 | /* Represents the C++ ABI version, always defined so it can be used while |
cb60f38d | 610 | preprocessing C and assembler. */ |
57702a80 MM |
611 | if (flag_abi_version == 0) |
612 | /* Use a very large value so that: | |
613 | ||
c22cacf3 | 614 | #if __GXX_ABI_VERSION >= <value for version X> |
57702a80 MM |
615 | |
616 | will work whether the user explicitly says "-fabi-version=x" or | |
617 | "-fabi-version=0". Do not use INT_MAX because that will be | |
618 | different from system to system. */ | |
619 | builtin_define_with_int_value ("__GXX_ABI_VERSION", 999999); | |
620 | else if (flag_abi_version == 1) | |
1f838355 | 621 | /* Due to a historical accident, this version had the value |
57702a80 MM |
622 | "102". */ |
623 | builtin_define_with_int_value ("__GXX_ABI_VERSION", 102); | |
624 | else | |
e0a21ab9 | 625 | /* Newer versions have values 1002, 1003, .... */ |
c22cacf3 | 626 | builtin_define_with_int_value ("__GXX_ABI_VERSION", |
57702a80 | 627 | 1000 + flag_abi_version); |
cb60f38d NB |
628 | |
629 | /* libgcc needs to know this. */ | |
677f3fa8 | 630 | if (targetm_common.except_unwind_info (&global_options) == UI_SJLJ) |
cb60f38d NB |
631 | cpp_define (pfile, "__USING_SJLJ_EXCEPTIONS__"); |
632 | ||
207bf79d JM |
633 | /* limits.h and stdint.h need to know these. */ |
634 | builtin_define_type_max ("__SCHAR_MAX__", signed_char_type_node); | |
635 | builtin_define_type_max ("__SHRT_MAX__", short_integer_type_node); | |
636 | builtin_define_type_max ("__INT_MAX__", integer_type_node); | |
637 | builtin_define_type_max ("__LONG_MAX__", long_integer_type_node); | |
638 | builtin_define_type_max ("__LONG_LONG_MAX__", long_long_integer_type_node); | |
639 | builtin_define_type_minmax ("__WCHAR_MIN__", "__WCHAR_MAX__", | |
640 | underlying_wchar_type_node); | |
641 | builtin_define_type_minmax ("__WINT_MIN__", "__WINT_MAX__", wint_type_node); | |
642 | builtin_define_type_max ("__PTRDIFF_MAX__", ptrdiff_type_node); | |
643 | builtin_define_type_max ("__SIZE_MAX__", size_type_node); | |
cb60f38d | 644 | |
207bf79d | 645 | /* stdint.h and the testsuite need to know these. */ |
85291069 JM |
646 | builtin_define_stdint_macros (); |
647 | ||
82a1c2fe | 648 | /* float.h needs to know this. */ |
cb60f38d NB |
649 | builtin_define_with_int_value ("__FLT_EVAL_METHOD__", |
650 | TARGET_FLT_EVAL_METHOD); | |
651 | ||
9a8ce21f JG |
652 | /* And decfloat.h needs this. */ |
653 | builtin_define_with_int_value ("__DEC_EVAL_METHOD__", | |
654 | TARGET_DEC_EVAL_METHOD); | |
655 | ||
1b1562a5 | 656 | builtin_define_float_constants ("FLT", "F", "%s", "F", float_type_node); |
6ec637a4 JJ |
657 | /* Cast the double precision constants. This is needed when single |
658 | precision constants are specified or when pragma FLOAT_CONST_DECIMAL64 | |
659 | is used. The correct result is computed by the compiler when using | |
bb0a9581 NF |
660 | macros that include a cast. We use a different cast for C++ to avoid |
661 | problems with -Wold-style-cast. */ | |
662 | builtin_define_float_constants ("DBL", "L", | |
663 | (c_dialect_cxx () | |
664 | ? "double(%s)" | |
665 | : "((double)%s)"), | |
666 | "", double_type_node); | |
1b1562a5 MM |
667 | builtin_define_float_constants ("LDBL", "L", "%s", "L", |
668 | long_double_type_node); | |
cb60f38d | 669 | |
9a8ce21f JG |
670 | /* For decfloat.h. */ |
671 | builtin_define_decimal_float_constants ("DEC32", "DF", dfloat32_type_node); | |
672 | builtin_define_decimal_float_constants ("DEC64", "DD", dfloat64_type_node); | |
673 | builtin_define_decimal_float_constants ("DEC128", "DL", dfloat128_type_node); | |
674 | ||
0f996086 CF |
675 | /* For fixed-point fibt, ibit, max, min, and epsilon. */ |
676 | if (targetm.fixed_point_supported_p ()) | |
677 | { | |
678 | builtin_define_fixed_point_constants ("SFRACT", "HR", | |
679 | short_fract_type_node); | |
680 | builtin_define_fixed_point_constants ("USFRACT", "UHR", | |
681 | unsigned_short_fract_type_node); | |
682 | builtin_define_fixed_point_constants ("FRACT", "R", | |
683 | fract_type_node); | |
684 | builtin_define_fixed_point_constants ("UFRACT", "UR", | |
685 | unsigned_fract_type_node); | |
686 | builtin_define_fixed_point_constants ("LFRACT", "LR", | |
687 | long_fract_type_node); | |
688 | builtin_define_fixed_point_constants ("ULFRACT", "ULR", | |
689 | unsigned_long_fract_type_node); | |
690 | builtin_define_fixed_point_constants ("LLFRACT", "LLR", | |
691 | long_long_fract_type_node); | |
692 | builtin_define_fixed_point_constants ("ULLFRACT", "ULLR", | |
693 | unsigned_long_long_fract_type_node); | |
694 | builtin_define_fixed_point_constants ("SACCUM", "HK", | |
695 | short_accum_type_node); | |
696 | builtin_define_fixed_point_constants ("USACCUM", "UHK", | |
697 | unsigned_short_accum_type_node); | |
698 | builtin_define_fixed_point_constants ("ACCUM", "K", | |
699 | accum_type_node); | |
700 | builtin_define_fixed_point_constants ("UACCUM", "UK", | |
701 | unsigned_accum_type_node); | |
702 | builtin_define_fixed_point_constants ("LACCUM", "LK", | |
703 | long_accum_type_node); | |
704 | builtin_define_fixed_point_constants ("ULACCUM", "ULK", | |
705 | unsigned_long_accum_type_node); | |
706 | builtin_define_fixed_point_constants ("LLACCUM", "LLK", | |
707 | long_long_accum_type_node); | |
708 | builtin_define_fixed_point_constants ("ULLACCUM", "ULLK", | |
709 | unsigned_long_long_accum_type_node); | |
710 | ||
711 | builtin_define_fixed_point_constants ("QQ", "", qq_type_node); | |
712 | builtin_define_fixed_point_constants ("HQ", "", hq_type_node); | |
713 | builtin_define_fixed_point_constants ("SQ", "", sq_type_node); | |
714 | builtin_define_fixed_point_constants ("DQ", "", dq_type_node); | |
715 | builtin_define_fixed_point_constants ("TQ", "", tq_type_node); | |
716 | builtin_define_fixed_point_constants ("UQQ", "", uqq_type_node); | |
717 | builtin_define_fixed_point_constants ("UHQ", "", uhq_type_node); | |
718 | builtin_define_fixed_point_constants ("USQ", "", usq_type_node); | |
719 | builtin_define_fixed_point_constants ("UDQ", "", udq_type_node); | |
720 | builtin_define_fixed_point_constants ("UTQ", "", utq_type_node); | |
721 | builtin_define_fixed_point_constants ("HA", "", ha_type_node); | |
722 | builtin_define_fixed_point_constants ("SA", "", sa_type_node); | |
723 | builtin_define_fixed_point_constants ("DA", "", da_type_node); | |
724 | builtin_define_fixed_point_constants ("TA", "", ta_type_node); | |
725 | builtin_define_fixed_point_constants ("UHA", "", uha_type_node); | |
726 | builtin_define_fixed_point_constants ("USA", "", usa_type_node); | |
727 | builtin_define_fixed_point_constants ("UDA", "", uda_type_node); | |
728 | builtin_define_fixed_point_constants ("UTA", "", uta_type_node); | |
729 | } | |
730 | ||
10e48e39 RO |
731 | /* For libgcc-internal use only. */ |
732 | if (flag_building_libgcc) | |
733 | /* For libgcc enable-execute-stack.c. */ | |
734 | builtin_define_with_int_value ("__LIBGCC_TRAMPOLINE_SIZE__", | |
735 | TRAMPOLINE_SIZE); | |
736 | ||
cb60f38d NB |
737 | /* For use in assembly language. */ |
738 | builtin_define_with_value ("__REGISTER_PREFIX__", REGISTER_PREFIX, 0); | |
739 | builtin_define_with_value ("__USER_LABEL_PREFIX__", user_label_prefix, 0); | |
740 | ||
741 | /* Misc. */ | |
da1c7394 ILT |
742 | if (flag_gnu89_inline) |
743 | cpp_define (pfile, "__GNUC_GNU_INLINE__"); | |
744 | else | |
745 | cpp_define (pfile, "__GNUC_STDC_INLINE__"); | |
746 | ||
e90acd93 | 747 | if (flag_no_inline) |
cb60f38d | 748 | cpp_define (pfile, "__NO_INLINE__"); |
cb60f38d NB |
749 | |
750 | if (flag_iso) | |
751 | cpp_define (pfile, "__STRICT_ANSI__"); | |
752 | ||
753 | if (!flag_signed_char) | |
754 | cpp_define (pfile, "__CHAR_UNSIGNED__"); | |
755 | ||
8df83eae | 756 | if (c_dialect_cxx () && TYPE_UNSIGNED (wchar_type_node)) |
cb60f38d NB |
757 | cpp_define (pfile, "__WCHAR_UNSIGNED__"); |
758 | ||
60c4429c PB |
759 | /* Tell source code if the compiler makes sync_compare_and_swap |
760 | builtins available. */ | |
86951993 AM |
761 | #ifndef HAVE_sync_compare_and_swapqi |
762 | #define HAVE_sync_compare_and_swapqi 0 | |
763 | #endif | |
764 | #ifndef HAVE_atomic_compare_and_swapqi | |
765 | #define HAVE_atomic_compare_and_swapqi 0 | |
60c4429c | 766 | #endif |
86951993 AM |
767 | if (HAVE_sync_compare_and_swapqi || HAVE_atomic_compare_and_swapqi) |
768 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1"); | |
60c4429c | 769 | |
86951993 AM |
770 | #ifndef HAVE_sync_compare_and_swaphi |
771 | #define HAVE_sync_compare_and_swaphi 0 | |
60c4429c | 772 | #endif |
86951993 AM |
773 | #ifndef HAVE_atomic_compare_and_swaphi |
774 | #define HAVE_atomic_compare_and_swaphi 0 | |
775 | #endif | |
776 | if (HAVE_sync_compare_and_swaphi || HAVE_atomic_compare_and_swaphi) | |
777 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2"); | |
60c4429c | 778 | |
86951993 AM |
779 | #ifndef HAVE_sync_compare_and_swapsi |
780 | #define HAVE_sync_compare_and_swapsi 0 | |
781 | #endif | |
782 | #ifndef HAVE_atomic_compare_and_swapsi | |
783 | #define HAVE_atomic_compare_and_swapsi 0 | |
60c4429c | 784 | #endif |
86951993 AM |
785 | if (HAVE_sync_compare_and_swapsi || HAVE_atomic_compare_and_swapsi) |
786 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4"); | |
60c4429c | 787 | |
86951993 AM |
788 | #ifndef HAVE_sync_compare_and_swapdi |
789 | #define HAVE_sync_compare_and_swapdi 0 | |
60c4429c | 790 | #endif |
86951993 AM |
791 | #ifndef HAVE_atomic_compare_and_swapdi |
792 | #define HAVE_atomic_compare_and_swapdi 0 | |
793 | #endif | |
794 | if (HAVE_sync_compare_and_swapdi || HAVE_atomic_compare_and_swapdi) | |
795 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8"); | |
60c4429c | 796 | |
86951993 AM |
797 | #ifndef HAVE_sync_compare_and_swapti |
798 | #define HAVE_sync_compare_and_swapti 0 | |
799 | #endif | |
800 | #ifndef HAVE_atomic_compare_and_swapti | |
801 | #define HAVE_atomic_compare_and_swapti 0 | |
60c4429c | 802 | #endif |
86951993 AM |
803 | if (HAVE_sync_compare_and_swapti || HAVE_atomic_compare_and_swapti) |
804 | cpp_define (pfile, "__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16"); | |
60c4429c | 805 | |
d4ea4622 | 806 | #ifdef DWARF2_UNWIND_INFO |
058514b3 | 807 | if (dwarf2out_do_cfi_asm ()) |
d4ea4622 RH |
808 | cpp_define (pfile, "__GCC_HAVE_DWARF2_CFI_ASM"); |
809 | #endif | |
810 | ||
cb60f38d | 811 | /* Make the choice of ObjC runtime visible to source code. */ |
37fa72e9 | 812 | if (c_dialect_objc () && flag_next_runtime) |
cb60f38d NB |
813 | cpp_define (pfile, "__NEXT_RUNTIME__"); |
814 | ||
84b8b0e0 | 815 | /* Show the availability of some target pragmas. */ |
c54d7dc9 | 816 | cpp_define (pfile, "__PRAGMA_REDEFINE_EXTNAME"); |
84b8b0e0 ZW |
817 | |
818 | if (targetm.handle_pragma_extern_prefix) | |
819 | cpp_define (pfile, "__PRAGMA_EXTERN_PREFIX"); | |
820 | ||
0ffb94cd JW |
821 | /* Make the choice of the stack protector runtime visible to source code. |
822 | The macro names and values here were chosen for compatibility with an | |
823 | earlier implementation, i.e. ProPolice. */ | |
7d69de61 RH |
824 | if (flag_stack_protect == 2) |
825 | cpp_define (pfile, "__SSP_ALL__=2"); | |
826 | else if (flag_stack_protect == 1) | |
827 | cpp_define (pfile, "__SSP__=1"); | |
828 | ||
953ff289 | 829 | if (flag_openmp) |
20906c66 | 830 | cpp_define (pfile, "_OPENMP=201107"); |
953ff289 | 831 | |
a6766312 KT |
832 | if (int128_integer_type_node != NULL_TREE) |
833 | builtin_define_type_sizeof ("__SIZEOF_INT128__", | |
834 | int128_integer_type_node); | |
024a85ae AK |
835 | builtin_define_type_sizeof ("__SIZEOF_WCHAR_T__", wchar_type_node); |
836 | builtin_define_type_sizeof ("__SIZEOF_WINT_T__", wint_type_node); | |
837 | builtin_define_type_sizeof ("__SIZEOF_PTRDIFF_T__", | |
838 | unsigned_ptrdiff_type_node); | |
024a85ae | 839 | |
cb60f38d NB |
840 | /* A straightforward target hook doesn't work, because of problems |
841 | linking that hook's body when part of non-C front ends. */ | |
842 | # define preprocessing_asm_p() (cpp_get_options (pfile)->lang == CLK_ASM) | |
843 | # define preprocessing_trad_p() (cpp_get_options (pfile)->traditional) | |
844 | # define builtin_define(TXT) cpp_define (pfile, TXT) | |
845 | # define builtin_assert(TXT) cpp_assert (pfile, TXT) | |
846 | TARGET_CPU_CPP_BUILTINS (); | |
847 | TARGET_OS_CPP_BUILTINS (); | |
4e2e315f | 848 | TARGET_OBJFMT_CPP_BUILTINS (); |
63c5b495 MM |
849 | |
850 | /* Support the __declspec keyword by turning them into attributes. | |
851 | Note that the current way we do this may result in a collision | |
852 | with predefined attributes later on. This can be solved by using | |
853 | one attribute, say __declspec__, and passing args to it. The | |
854 | problem with that approach is that args are not accumulated: each | |
855 | new appearance would clobber any existing args. */ | |
856 | if (TARGET_DECLSPEC) | |
857 | builtin_define ("__declspec(x)=__attribute__((x))"); | |
79b87c74 | 858 | |
589dd995 JJ |
859 | /* If decimal floating point is supported, tell the user if the |
860 | alternate format (BID) is used instead of the standard (DPD) | |
861 | format. */ | |
862 | if (ENABLE_DECIMAL_FLOAT && ENABLE_DECIMAL_BID_FORMAT) | |
863 | cpp_define (pfile, "__DECIMAL_BID_FORMAT__"); | |
cb60f38d NB |
864 | } |
865 | ||
866 | /* Pass an object-like macro. If it doesn't lie in the user's | |
867 | namespace, defines it unconditionally. Otherwise define a version | |
868 | with two leading underscores, and another version with two leading | |
869 | and trailing underscores, and define the original only if an ISO | |
870 | standard was not nominated. | |
871 | ||
872 | e.g. passing "unix" defines "__unix", "__unix__" and possibly | |
873 | "unix". Passing "_mips" defines "__mips", "__mips__" and possibly | |
874 | "_mips". */ | |
21282b1e | 875 | void |
35b1a6fa | 876 | builtin_define_std (const char *macro) |
cb60f38d NB |
877 | { |
878 | size_t len = strlen (macro); | |
cceb1885 | 879 | char *buff = (char *) alloca (len + 5); |
cb60f38d NB |
880 | char *p = buff + 2; |
881 | char *q = p + len; | |
882 | ||
883 | /* prepend __ (or maybe just _) if in user's namespace. */ | |
884 | memcpy (p, macro, len + 1); | |
885 | if (!( *p == '_' && (p[1] == '_' || ISUPPER (p[1])))) | |
886 | { | |
887 | if (*p != '_') | |
888 | *--p = '_'; | |
889 | if (p[1] != '_') | |
890 | *--p = '_'; | |
891 | } | |
892 | cpp_define (parse_in, p); | |
893 | ||
894 | /* If it was in user's namespace... */ | |
895 | if (p != buff + 2) | |
896 | { | |
897 | /* Define the macro with leading and following __. */ | |
898 | if (q[-1] != '_') | |
899 | *q++ = '_'; | |
900 | if (q[-2] != '_') | |
901 | *q++ = '_'; | |
902 | *q = '\0'; | |
903 | cpp_define (parse_in, p); | |
904 | ||
905 | /* Finally, define the original macro if permitted. */ | |
906 | if (!flag_iso) | |
907 | cpp_define (parse_in, macro); | |
908 | } | |
909 | } | |
910 | ||
911 | /* Pass an object-like macro and a value to define it to. The third | |
912 | parameter says whether or not to turn the value into a string | |
913 | constant. */ | |
914 | void | |
35b1a6fa | 915 | builtin_define_with_value (const char *macro, const char *expansion, int is_str) |
cb60f38d NB |
916 | { |
917 | char *buf; | |
918 | size_t mlen = strlen (macro); | |
919 | size_t elen = strlen (expansion); | |
920 | size_t extra = 2; /* space for an = and a NUL */ | |
921 | ||
922 | if (is_str) | |
923 | extra += 2; /* space for two quote marks */ | |
924 | ||
cceb1885 | 925 | buf = (char *) alloca (mlen + elen + extra); |
cb60f38d NB |
926 | if (is_str) |
927 | sprintf (buf, "%s=\"%s\"", macro, expansion); | |
928 | else | |
929 | sprintf (buf, "%s=%s", macro, expansion); | |
930 | ||
931 | cpp_define (parse_in, buf); | |
932 | } | |
933 | ||
cb60f38d NB |
934 | |
935 | /* Pass an object-like macro and an integer value to define it to. */ | |
936 | static void | |
35b1a6fa | 937 | builtin_define_with_int_value (const char *macro, HOST_WIDE_INT value) |
cb60f38d NB |
938 | { |
939 | char *buf; | |
940 | size_t mlen = strlen (macro); | |
941 | size_t vlen = 18; | |
942 | size_t extra = 2; /* space for = and NUL. */ | |
943 | ||
cceb1885 | 944 | buf = (char *) alloca (mlen + vlen + extra); |
cb60f38d NB |
945 | memcpy (buf, macro, mlen); |
946 | buf[mlen] = '='; | |
947 | sprintf (buf + mlen + 1, HOST_WIDE_INT_PRINT_DEC, value); | |
948 | ||
949 | cpp_define (parse_in, buf); | |
950 | } | |
951 | ||
8e680db5 JJ |
952 | /* builtin_define_with_hex_fp_value is very expensive, so the following |
953 | array and function allows it to be done lazily when __DBL_MAX__ | |
954 | etc. is first used. */ | |
955 | ||
5bca794b | 956 | struct GTY(()) lazy_hex_fp_value_struct |
8e680db5 JJ |
957 | { |
958 | const char *hex_str; | |
959 | cpp_macro *macro; | |
960 | enum machine_mode mode; | |
961 | int digits; | |
962 | const char *fp_suffix; | |
5bca794b JJ |
963 | }; |
964 | static GTY(()) struct lazy_hex_fp_value_struct lazy_hex_fp_values[12]; | |
965 | static GTY(()) int lazy_hex_fp_value_count; | |
8e680db5 JJ |
966 | |
967 | static bool | |
968 | lazy_hex_fp_value (cpp_reader *pfile ATTRIBUTE_UNUSED, | |
969 | cpp_hashnode *node) | |
970 | { | |
971 | REAL_VALUE_TYPE real; | |
972 | char dec_str[64], buf1[256]; | |
973 | unsigned int idx; | |
974 | if (node->value.builtin < BT_FIRST_USER | |
975 | || (int) node->value.builtin >= BT_FIRST_USER + lazy_hex_fp_value_count) | |
976 | return false; | |
977 | ||
978 | idx = node->value.builtin - BT_FIRST_USER; | |
979 | real_from_string (&real, lazy_hex_fp_values[idx].hex_str); | |
980 | real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str), | |
981 | lazy_hex_fp_values[idx].digits, 0, | |
982 | lazy_hex_fp_values[idx].mode); | |
983 | ||
984 | sprintf (buf1, "%s%s", dec_str, lazy_hex_fp_values[idx].fp_suffix); | |
985 | node->flags &= ~(NODE_BUILTIN | NODE_USED); | |
986 | node->value.macro = lazy_hex_fp_values[idx].macro; | |
987 | for (idx = 0; idx < node->value.macro->count; idx++) | |
988 | if (node->value.macro->exp.tokens[idx].type == CPP_NUMBER) | |
989 | break; | |
990 | gcc_assert (idx < node->value.macro->count); | |
991 | node->value.macro->exp.tokens[idx].val.str.len = strlen (buf1); | |
992 | node->value.macro->exp.tokens[idx].val.str.text | |
5bca794b | 993 | = (const unsigned char *) ggc_strdup (buf1); |
8e680db5 JJ |
994 | return true; |
995 | } | |
996 | ||
cb60f38d NB |
997 | /* Pass an object-like macro a hexadecimal floating-point value. */ |
998 | static void | |
35b1a6fa | 999 | builtin_define_with_hex_fp_value (const char *macro, |
3e479de3 | 1000 | tree type, int digits, |
b8698a0f | 1001 | const char *hex_str, |
264c41ed CD |
1002 | const char *fp_suffix, |
1003 | const char *fp_cast) | |
cb60f38d NB |
1004 | { |
1005 | REAL_VALUE_TYPE real; | |
264c41ed | 1006 | char dec_str[64], buf1[256], buf2[256]; |
cb60f38d | 1007 | |
8e680db5 JJ |
1008 | /* This is very expensive, so if possible expand them lazily. */ |
1009 | if (lazy_hex_fp_value_count < 12 | |
1010 | && flag_dump_macros == 0 | |
1011 | && !cpp_get_options (parse_in)->traditional) | |
1012 | { | |
1013 | struct cpp_hashnode *node; | |
1014 | if (lazy_hex_fp_value_count == 0) | |
1015 | cpp_get_callbacks (parse_in)->user_builtin_macro = lazy_hex_fp_value; | |
1016 | sprintf (buf2, fp_cast, "1.1"); | |
1017 | sprintf (buf1, "%s=%s", macro, buf2); | |
1018 | cpp_define (parse_in, buf1); | |
1019 | node = C_CPP_HASHNODE (get_identifier (macro)); | |
5bca794b JJ |
1020 | lazy_hex_fp_values[lazy_hex_fp_value_count].hex_str |
1021 | = ggc_strdup (hex_str); | |
8e680db5 JJ |
1022 | lazy_hex_fp_values[lazy_hex_fp_value_count].mode = TYPE_MODE (type); |
1023 | lazy_hex_fp_values[lazy_hex_fp_value_count].digits = digits; | |
1024 | lazy_hex_fp_values[lazy_hex_fp_value_count].fp_suffix = fp_suffix; | |
1025 | lazy_hex_fp_values[lazy_hex_fp_value_count].macro = node->value.macro; | |
1026 | node->flags |= NODE_BUILTIN; | |
b49cf425 JR |
1027 | node->value.builtin |
1028 | = (enum cpp_builtin_type) (BT_FIRST_USER + lazy_hex_fp_value_count); | |
8e680db5 JJ |
1029 | lazy_hex_fp_value_count++; |
1030 | return; | |
1031 | } | |
1032 | ||
cb60f38d NB |
1033 | /* Hex values are really cool and convenient, except that they're |
1034 | not supported in strict ISO C90 mode. First, the "p-" sequence | |
1035 | is not valid as part of a preprocessor number. Second, we get a | |
1036 | pedwarn from the preprocessor, which has no context, so we can't | |
1037 | suppress the warning with __extension__. | |
1038 | ||
35b1a6fa | 1039 | So instead what we do is construct the number in hex (because |
cb60f38d NB |
1040 | it's easy to get the exact correct value), parse it as a real, |
1041 | then print it back out as decimal. */ | |
1042 | ||
1043 | real_from_string (&real, hex_str); | |
3e479de3 UW |
1044 | real_to_decimal_for_mode (dec_str, &real, sizeof (dec_str), digits, 0, |
1045 | TYPE_MODE (type)); | |
cb60f38d | 1046 | |
264c41ed CD |
1047 | /* Assemble the macro in the following fashion |
1048 | macro = fp_cast [dec_str fp_suffix] */ | |
1049 | sprintf (buf1, "%s%s", dec_str, fp_suffix); | |
1050 | sprintf (buf2, fp_cast, buf1); | |
1051 | sprintf (buf1, "%s=%s", macro, buf2); | |
b8698a0f | 1052 | |
264c41ed | 1053 | cpp_define (parse_in, buf1); |
cb60f38d NB |
1054 | } |
1055 | ||
207bf79d JM |
1056 | /* Return a string constant for the suffix for a value of type TYPE |
1057 | promoted according to the integer promotions. The type must be one | |
1058 | of the standard integer type nodes. */ | |
1059 | ||
1060 | static const char * | |
1061 | type_suffix (tree type) | |
1062 | { | |
1063 | static const char *const suffixes[] = { "", "U", "L", "UL", "LL", "ULL" }; | |
1064 | int unsigned_suffix; | |
1065 | int is_long; | |
1066 | ||
1067 | if (type == long_long_integer_type_node | |
1068 | || type == long_long_unsigned_type_node) | |
1069 | is_long = 2; | |
1070 | else if (type == long_integer_type_node | |
1071 | || type == long_unsigned_type_node) | |
1072 | is_long = 1; | |
1073 | else if (type == integer_type_node | |
1074 | || type == unsigned_type_node | |
1075 | || type == short_integer_type_node | |
1076 | || type == short_unsigned_type_node | |
1077 | || type == signed_char_type_node | |
1078 | || type == unsigned_char_type_node | |
1079 | /* ??? "char" is not a signed or unsigned integer type and | |
1080 | so is not permitted for the standard typedefs, but some | |
1081 | systems use it anyway. */ | |
1082 | || type == char_type_node) | |
1083 | is_long = 0; | |
1084 | else | |
1085 | gcc_unreachable (); | |
1086 | ||
1087 | unsigned_suffix = TYPE_UNSIGNED (type); | |
1088 | if (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)) | |
1089 | unsigned_suffix = 0; | |
1090 | return suffixes[is_long * 2 + unsigned_suffix]; | |
1091 | } | |
1092 | ||
1093 | /* Define MACRO as a <stdint.h> constant-suffix macro for TYPE. */ | |
1094 | static void | |
1095 | builtin_define_constants (const char *macro, tree type) | |
1096 | { | |
1097 | const char *suffix; | |
1098 | char *buf; | |
1099 | ||
1100 | suffix = type_suffix (type); | |
1101 | ||
1102 | if (suffix[0] == 0) | |
1103 | { | |
1104 | buf = (char *) alloca (strlen (macro) + 6); | |
1105 | sprintf (buf, "%s(c)=c", macro); | |
1106 | } | |
1107 | else | |
1108 | { | |
1109 | buf = (char *) alloca (strlen (macro) + 9 + strlen (suffix) + 1); | |
1110 | sprintf (buf, "%s(c)=c ## %s", macro, suffix); | |
1111 | } | |
1112 | ||
1113 | cpp_define (parse_in, buf); | |
1114 | } | |
1115 | ||
1116 | /* Define MAX for TYPE based on the precision of the type. */ | |
1117 | ||
1118 | static void | |
1119 | builtin_define_type_max (const char *macro, tree type) | |
1120 | { | |
1121 | builtin_define_type_minmax (NULL, macro, type); | |
1122 | } | |
1123 | ||
1124 | /* Define MIN_MACRO (if not NULL) and MAX_MACRO for TYPE based on the | |
1125 | precision of the type. */ | |
cb60f38d NB |
1126 | |
1127 | static void | |
207bf79d JM |
1128 | builtin_define_type_minmax (const char *min_macro, const char *max_macro, |
1129 | tree type) | |
cb60f38d NB |
1130 | { |
1131 | static const char *const values[] | |
1132 | = { "127", "255", | |
1133 | "32767", "65535", | |
1134 | "2147483647", "4294967295", | |
1135 | "9223372036854775807", "18446744073709551615", | |
1136 | "170141183460469231731687303715884105727", | |
1137 | "340282366920938463463374607431768211455" }; | |
cb60f38d NB |
1138 | |
1139 | const char *value, *suffix; | |
1140 | char *buf; | |
1141 | size_t idx; | |
1142 | ||
1143 | /* Pre-rendering the values mean we don't have to futz with printing a | |
1144 | multi-word decimal value. There are also a very limited number of | |
1145 | precisions that we support, so it's really a waste of time. */ | |
1146 | switch (TYPE_PRECISION (type)) | |
1147 | { | |
1148 | case 8: idx = 0; break; | |
1149 | case 16: idx = 2; break; | |
1150 | case 32: idx = 4; break; | |
1151 | case 64: idx = 6; break; | |
1152 | case 128: idx = 8; break; | |
366de0ce | 1153 | default: gcc_unreachable (); |
cb60f38d NB |
1154 | } |
1155 | ||
8df83eae | 1156 | value = values[idx + TYPE_UNSIGNED (type)]; |
207bf79d | 1157 | suffix = type_suffix (type); |
cb60f38d | 1158 | |
207bf79d | 1159 | buf = (char *) alloca (strlen (max_macro) + 1 + strlen (value) |
cceb1885 | 1160 | + strlen (suffix) + 1); |
207bf79d | 1161 | sprintf (buf, "%s=%s%s", max_macro, value, suffix); |
cb60f38d NB |
1162 | |
1163 | cpp_define (parse_in, buf); | |
207bf79d JM |
1164 | |
1165 | if (min_macro) | |
1166 | { | |
1167 | if (TYPE_UNSIGNED (type)) | |
1168 | { | |
1169 | buf = (char *) alloca (strlen (min_macro) + 2 + strlen (suffix) + 1); | |
1170 | sprintf (buf, "%s=0%s", min_macro, suffix); | |
1171 | } | |
1172 | else | |
1173 | { | |
1174 | buf = (char *) alloca (strlen (min_macro) + 3 | |
1175 | + strlen (max_macro) + 6); | |
1176 | sprintf (buf, "%s=(-%s - 1)", min_macro, max_macro); | |
1177 | } | |
1178 | cpp_define (parse_in, buf); | |
1179 | } | |
cb60f38d | 1180 | } |
5bca794b JJ |
1181 | |
1182 | #include "gt-c-family-c-cppbuiltin.h" |