1 /*
2 * 'sparse' library helper routines.
3 *
4 * Copyright (C) 2003 Transmeta Corp.
5 * 2003-2004 Linus Torvalds
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25 #include <ctype.h>
26 #include <fcntl.h>
27 #include <stdarg.h>
28 #include <stddef.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <unistd.h>
33 #include <assert.h>
34
35 #include <sys/types.h>
36
37 #include "lib.h"
38 #include "allocate.h"
39 #include "token.h"
40 #include "parse.h"
41 #include "symbol.h"
42 #include "expression.h"
43 #include "scope.h"
44 #include "linearize.h"
45 #include "target.h"
46 #include "version.h"
47
48 static const char *progname;
49
50 int sparse_errors = 0;
51 int sparse_warnings = 0;
52
53 int verbose, optimize, optimize_size, preprocessing;
54 int die_if_error = 0;
55 int parse_error;
56 int has_error = 0;
57
58 #ifndef __GNUC__
59 # define __GNUC__ 2
60 # define __GNUC_MINOR__ 95
61 # define __GNUC_PATCHLEVEL__ 0
62 #endif
63
64 int gcc_major = __GNUC__;
65 int gcc_minor = __GNUC_MINOR__;
66 int gcc_patchlevel = __GNUC_PATCHLEVEL__;
67
68 static const char *gcc_base_dir = GCC_BASE;
69 static const char *multiarch_dir = MULTIARCH_TRIPLET;
70
71 struct token *skip_to(struct token *token, int op)
72 {
73 while (!match_op(token, op) && !eof_token(token))
74 token = token->next;
75 return token;
76 }
77
78 struct token *expect(struct token *token, int op, const char *where)
79 {
80 if (!match_op(token, op)) {
81 static struct token bad_token;
82 if (token != &bad_token) {
83 bad_token.next = token;
84 sparse_error(token->pos, "Expected %s %s", show_special(op), where);
85 sparse_error(token->pos, "got %s", show_token(token));
86 }
87 if (op == ';')
88 return skip_to(token, op);
89 return &bad_token;
90 }
91 return token->next;
92 }
93
94 unsigned int hexval(unsigned int c)
95 {
96 int retval = 256;
97 switch (c) {
98 case '0'...'9':
99 retval = c - '0';
100 break;
101 case 'a'...'f':
102 retval = c - 'a' + 10;
103 break;
104 case 'A'...'F':
105 retval = c - 'A' + 10;
106 break;
107 }
108 return retval;
109 }
110
111 static void do_warn(const char *type, struct position pos, const char * fmt, va_list args)
112 {
113 static char buffer[512];
114 const char *name;
115
116 vsprintf(buffer, fmt, args);
117 name = stream_name(pos.stream);
118
119 fprintf(stderr, "%s: %s:%d:%d: %s%s\n",
120 progname, name, pos.line, pos.pos, type, buffer);
121 }
122
123 static int max_warnings = 100;
124 static int show_info = 1;
125
126 void info(struct position pos, const char * fmt, ...)
127 {
128 va_list args;
129
130 if (!show_info)
131 return;
132 va_start(args, fmt);
133 do_warn("", pos, fmt, args);
134 va_end(args);
135 }
136
137 static void do_error(struct position pos, const char * fmt, va_list args)
138 {
139 static int errors = 0;
140
141 parse_error = 1;
142 die_if_error = 1;
143 show_info = 1;
144 /* Shut up warnings after an error */
145 has_error |= ERROR_CURR_PHASE;
146 if (errors > 100) {
147 static int once = 0;
148 show_info = 0;
149 if (once)
150 return;
151 fmt = "too many errors";
152 once = 1;
153 }
154
155 do_warn("error: ", pos, fmt, args);
156 errors++;
157 }
158
159 void warning(struct position pos, const char * fmt, ...)
160 {
161 va_list args;
162
163 if (Wsparse_error) {
164 va_start(args, fmt);
165 do_error(pos, fmt, args);
166 va_end(args);
167 return;
168 }
169
170 if (!max_warnings || has_error) {
171 show_info = 0;
172 return;
173 }
174
175 if (!--max_warnings) {
176 show_info = 0;
177 fmt = "too many warnings";
178 }
179
180 va_start(args, fmt);
181 do_warn("warning: ", pos, fmt, args);
182 va_end(args);
183 }
184
185 void sparse_error(struct position pos, const char * fmt, ...)
186 {
187 va_list args;
188 va_start(args, fmt);
189 do_error(pos, fmt, args);
190 va_end(args);
191 }
192
193 void expression_error(struct expression *expr, const char *fmt, ...)
194 {
195 va_list args;
196 va_start(args, fmt);
197 do_error(expr->pos, fmt, args);
198 va_end(args);
199 expr->ctype = &bad_ctype;
200 }
201
202 NORETURN_ATTR
203 void error_die(struct position pos, const char * fmt, ...)
204 {
205 va_list args;
206 va_start(args, fmt);
207 do_warn("error: ", pos, fmt, args);
208 va_end(args);
209 exit(1);
210 }
211
212 NORETURN_ATTR
213 void die(const char *fmt, ...)
214 {
215 va_list args;
216 static char buffer[512];
217
218 va_start(args, fmt);
219 vsnprintf(buffer, sizeof(buffer), fmt, args);
220 va_end(args);
221
222 fprintf(stderr, "%s: %s\n", progname, buffer);
223 exit(1);
224 }
225
226 static struct token *pre_buffer_begin = NULL;
227 static struct token *pre_buffer_end = NULL;
228
229 int Waddress = 0;
230 int Waddress_space = 1;
231 int Wbitwise = 1;
232 int Wcast_to_as = 0;
233 int Wcast_truncate = 1;
234 int Wconstant_suffix = 0;
235 int Wconstexpr_not_const = 0;
236 int Wcontext = 1;
237 int Wdecl = 1;
238 int Wdeclarationafterstatement = -1;
239 int Wdefault_bitfield_sign = 0;
240 int Wdesignated_init = 1;
241 int Wdo_while = 0;
242 int Wimplicit_int = 1;
243 int Winit_cstring = 0;
244 int Wenum_mismatch = 1;
245 int Wexternal_function_has_definition = 1;
246 int Wsparse_error = 0;
247 int Wmemcpy_max_count = 1;
248 int Wnon_pointer_null = 1;
249 int Wold_initializer = 1;
250 int Wold_style_definition = 1;
251 int Wone_bit_signed_bitfield = 1;
252 int Woverride_init = 1;
253 int Woverride_init_all = 0;
254 int Woverride_init_whole_range = 0;
255 int Wparen_string = 0;
256 int Wpointer_arith = 0;
257 int Wptr_subtraction_blows = 0;
258 int Wreturn_void = 0;
259 int Wshadow = 0;
260 int Wsizeof_bool = 0;
261 int Wstrict_prototypes = 1;
262 int Wtautological_compare = 0;
263 int Wtransparent_union = 0;
264 int Wtypesign = 0;
265 int Wundef = 0;
266 int Wuninitialized = 1;
267 int Wunknown_attribute = 0;
268 int Wvla = 1;
269
270 int dump_macro_defs = 0;
271
272 int dbg_entry = 0;
273 int dbg_dead = 0;
274
275 int fmem_report = 0;
276 int fdump_linearize;
277 unsigned long long fmemcpy_max_count = 100000;
278
279 int preprocess_only;
280
281 static enum { STANDARD_C89,
282 STANDARD_C94,
283 STANDARD_C99,
284 STANDARD_C11,
285 STANDARD_GNU11,
286 STANDARD_GNU89,
287 STANDARD_GNU99, } standard = STANDARD_GNU89;
288
289 #define ARCH_LP32 0
290 #define ARCH_LP64 1
291 #define ARCH_LLP64 2
292
293 #ifdef __x86_64__
294 #define ARCH_M64_DEFAULT ARCH_LP64
295 #else
296 #define ARCH_M64_DEFAULT ARCH_LP32
297 #endif
298
299 int arch_m64 = ARCH_M64_DEFAULT;
300 int arch_msize_long = 0;
301
302 #ifdef __BIG_ENDIAN__
303 #define ARCH_BIG_ENDIAN 1
304 #else
305 #define ARCH_BIG_ENDIAN 0
306 #endif
307 int arch_big_endian = ARCH_BIG_ENDIAN;
308
309
310 #define CMDLINE_INCLUDE 20
311 static int cmdline_include_nr = 0;
312 static char *cmdline_include[CMDLINE_INCLUDE];
313
314
315 void add_pre_buffer(const char *fmt, ...)
316 {
317 va_list args;
318 unsigned int size;
319 struct token *begin, *end;
320 char buffer[4096];
321
322 va_start(args, fmt);
323 size = vsnprintf(buffer, sizeof(buffer), fmt, args);
324 va_end(args);
325 begin = tokenize_buffer(buffer, size, &end);
326 if (!pre_buffer_begin)
327 pre_buffer_begin = begin;
328 if (pre_buffer_end)
329 pre_buffer_end->next = begin;
330 pre_buffer_end = end;
331 }
332
333 static char **handle_switch_D(char *arg, char **next)
334 {
335 const char *name = arg + 1;
336 const char *value = "1";
337
338 if (!*name) {
339 arg = *++next;
340 if (!arg)
341 die("argument to `-D' is missing");
342 name = arg;
343 }
344
345 for (;;arg++) {
346 char c;
347 c = *arg;
348 if (!c)
349 break;
350 if (c == '=') {
351 *arg = '\0';
352 value = arg + 1;
353 break;
354 }
355 }
356 add_pre_buffer("#define %s %s\n", name, value);
357 return next;
358 }
359
360 static char **handle_switch_E(char *arg, char **next)
361 {
362 if (arg[1] == '\0')
363 preprocess_only = 1;
364 return next;
365 }
366
367 static char **handle_switch_I(char *arg, char **next)
368 {
369 char *path = arg+1;
370
371 switch (arg[1]) {
372 case '-':
373 add_pre_buffer("#split_include\n");
374 break;
375
376 case '\0': /* Plain "-I" */
377 path = *++next;
378 if (!path)
379 die("missing argument for -I option");
380 /* Fall through */
381 default:
382 add_pre_buffer("#add_include \"%s/\"\n", path);
383 }
384 return next;
385 }
386
387 static void add_cmdline_include(char *filename)
388 {
389 if (cmdline_include_nr >= CMDLINE_INCLUDE)
390 die("too many include files for %s\n", filename);
391 cmdline_include[cmdline_include_nr++] = filename;
392 }
393
394 static char **handle_switch_i(char *arg, char **next)
395 {
396 if (*next && !strcmp(arg, "include"))
397 add_cmdline_include(*++next);
398 else if (*next && !strcmp(arg, "imacros"))
399 add_cmdline_include(*++next);
400 else if (*next && !strcmp(arg, "isystem")) {
401 char *path = *++next;
402 if (!path)
403 die("missing argument for -isystem option");
404 add_pre_buffer("#add_isystem \"%s/\"\n", path);
405 } else if (*next && !strcmp(arg, "idirafter")) {
406 char *path = *++next;
407 if (!path)
408 die("missing argument for -idirafter option");
409 add_pre_buffer("#add_dirafter \"%s/\"\n", path);
410 }
411 return next;
412 }
413
414 static char **handle_switch_M(char *arg, char **next)
415 {
416 if (!strcmp(arg, "MF") || !strcmp(arg,"MQ") || !strcmp(arg,"MT")) {
417 if (!*next)
418 die("missing argument for -%s option", arg);
419 return next + 1;
420 }
421 return next;
422 }
423
424 static char **handle_multiarch_dir(char *arg, char **next)
425 {
426 multiarch_dir = *++next;
427 if (!multiarch_dir)
428 die("missing argument for -multiarch-dir option");
429 return next;
430 }
431
432 static char **handle_switch_m(char *arg, char **next)
433 {
434 if (!strcmp(arg, "m64")) {
435 arch_m64 = ARCH_LP64;
436 } else if (!strcmp(arg, "m32")) {
437 arch_m64 = ARCH_LP32;
438 } else if (!strcmp(arg, "msize-llp64")) {
439 arch_m64 = ARCH_LLP64;
440 } else if (!strcmp(arg, "msize-long")) {
441 arch_msize_long = 1;
442 } else if (!strcmp(arg, "multiarch-dir")) {
443 return handle_multiarch_dir(arg, next);
444 } else if (!strcmp(arg, "mbig-endian")) {
445 arch_big_endian = 1;
446 } else if (!strcmp(arg, "mlittle-endian")) {
447 arch_big_endian = 0;
448 }
449 return next;
450 }
451
452 static void handle_arch_m64_finalize(void)
453 {
454 switch (arch_m64) {
455 case ARCH_LP32:
456 /* default values */
457 #if defined(__x86_64__) || defined (__i386)
458 add_pre_buffer("#weak_define __i386__ 1\n");
459 add_pre_buffer("#weak_define __i386 1\n");
460 add_pre_buffer("#weak_define i386 1\n");
461 #endif
462 return;
463 case ARCH_LP64:
464 bits_in_long = 64;
465 max_int_alignment = 8;
466 size_t_ctype = &ulong_ctype;
467 ssize_t_ctype = &long_ctype;
468 add_pre_buffer("#weak_define __LP64__ 1\n");
469 add_pre_buffer("#weak_define __LP64 1\n");
470 add_pre_buffer("#weak_define _LP64 1\n");
471 goto case_64bit_common;
472 case ARCH_LLP64:
473 bits_in_long = 32;
474 max_int_alignment = 4;
475 size_t_ctype = &ullong_ctype;
476 ssize_t_ctype = &llong_ctype;
477 add_pre_buffer("#weak_define __LLP64__ 1\n");
478 goto case_64bit_common;
479 case_64bit_common:
480 bits_in_pointer = 64;
481 pointer_alignment = 8;
482 #if defined(__x86_64__) || defined (__i386)
483 add_pre_buffer("#weak_define __x86_64__ 1\n");
484 add_pre_buffer("#weak_define __x86_64 1\n");
485 #endif
486 break;
487 }
488 }
489
490 static void handle_arch_msize_long_finalize(void)
491 {
492 if (arch_msize_long) {
493 size_t_ctype = &ulong_ctype;
494 ssize_t_ctype = &long_ctype;
495 }
496 }
497
498 static void handle_arch_finalize(void)
499 {
500 handle_arch_m64_finalize();
501 handle_arch_msize_long_finalize();
502 }
503
504
505 static int handle_simple_switch(const char *arg, const char *name, int *flag)
506 {
507 int val = 1;
508
509 // Prefixe "no-" mean to turn flag off.
510 if (strncmp(arg, "no-", 3) == 0) {
511 arg += 3;
512 val = 0;
513 }
514
515 if (strcmp(arg, name) == 0) {
516 *flag = val;
517 return 1;
518 }
519
520 // not handled
521 return 0;
522 }
523
524 static char **handle_switch_o(char *arg, char **next)
525 {
526 if (!strcmp (arg, "o")) { // "-o foo"
527 if (!*++next)
528 die("argument to '-o' is missing");
529 }
530 // else "-ofoo"
531
532 return next;
533 }
534
535 static const struct warning {
536 const char *name;
537 int *flag;
538 } warnings[] = {
539 { "address", &Waddress },
540 { "address-space", &Waddress_space },
541 { "bitwise", &Wbitwise },
542 { "cast-to-as", &Wcast_to_as },
543 { "cast-truncate", &Wcast_truncate },
544 { "constant-suffix", &Wconstant_suffix },
545 { "constexpr-not-const", &Wconstexpr_not_const},
546 { "context", &Wcontext },
547 { "decl", &Wdecl },
548 { "declaration-after-statement", &Wdeclarationafterstatement },
549 { "default-bitfield-sign", &Wdefault_bitfield_sign },
550 { "designated-init", &Wdesignated_init },
551 { "do-while", &Wdo_while },
552 { "enum-mismatch", &Wenum_mismatch },
553 { "external-function-has-definition", &Wexternal_function_has_definition },
554 { "implicit-int", &Wimplicit_int },
555 { "init-cstring", &Winit_cstring },
556 { "memcpy-max-count", &Wmemcpy_max_count },
557 { "non-pointer-null", &Wnon_pointer_null },
558 { "old-initializer", &Wold_initializer },
559 { "old-style-definition", &Wold_style_definition },
560 { "one-bit-signed-bitfield", &Wone_bit_signed_bitfield },
561 { "override-init", &Woverride_init },
562 { "override-init-all", &Woverride_init_all },
563 { "paren-string", &Wparen_string },
564 { "ptr-subtraction-blows", &Wptr_subtraction_blows },
565 { "return-void", &Wreturn_void },
566 { "shadow", &Wshadow },
567 { "sizeof-bool", &Wsizeof_bool },
568 { "strict-prototypes", &Wstrict_prototypes },
569 { "pointer-arith", &Wpointer_arith },
570 { "sparse-error", &Wsparse_error },
571 { "tautological-compare", &Wtautological_compare },
572 { "transparent-union", &Wtransparent_union },
573 { "typesign", &Wtypesign },
574 { "undef", &Wundef },
575 { "uninitialized", &Wuninitialized },
576 { "unknown-attribute", &Wunknown_attribute },
577 { "vla", &Wvla },
578 };
579
580 enum {
581 WARNING_OFF,
582 WARNING_ON,
583 WARNING_FORCE_OFF
584 };
585
586
587 static char **handle_onoff_switch(char *arg, char **next, const struct warning warnings[], int n)
588 {
589 int flag = WARNING_ON;
590 char *p = arg + 1;
591 unsigned i;
592
593 if (!strcmp(p, "sparse-all")) {
594 for (i = 0; i < n; i++) {
595 if (*warnings[i].flag != WARNING_FORCE_OFF && warnings[i].flag != &Wsparse_error)
596 *warnings[i].flag = WARNING_ON;
597 }
598 }
599
600 // Prefixes "no" and "no-" mean to turn warning off.
601 if (p[0] == 'n' && p[1] == 'o') {
602 p += 2;
603 if (p[0] == '-')
604 p++;
605 flag = WARNING_FORCE_OFF;
606 }
607
608 for (i = 0; i < n; i++) {
609 if (!strcmp(p,warnings[i].name)) {
610 *warnings[i].flag = flag;
611 return next;
612 }
613 }
614
615 // Unknown.
616 return NULL;
617 }
618
619 static char **handle_switch_W(char *arg, char **next)
620 {
621 char ** ret = handle_onoff_switch(arg, next, warnings, ARRAY_SIZE(warnings));
622 if (ret)
623 return ret;
624
625 // Unknown.
626 return next;
627 }
628
629 static struct warning debugs[] = {
630 { "entry", &dbg_entry},
631 { "dead", &dbg_dead},
632 };
633
634
635 static char **handle_switch_v(char *arg, char **next)
636 {
637 char ** ret = handle_onoff_switch(arg, next, debugs, ARRAY_SIZE(debugs));
638 if (ret)
639 return ret;
640
641 // Unknown.
642 do {
643 verbose++;
644 } while (*++arg == 'v');
645 return next;
646 }
647
648 static struct warning dumps[] = {
649 { "D", &dump_macro_defs},
650 };
651
652 static char **handle_switch_d(char *arg, char **next)
653 {
654 char ** ret = handle_onoff_switch(arg, next, dumps, ARRAY_SIZE(dumps));
655 if (ret)
656 return ret;
657
658 return next;
659 }
660
661
662 static void handle_onoff_switch_finalize(const struct warning warnings[], int n)
663 {
664 unsigned i;
665
666 for (i = 0; i < n; i++) {
667 if (*warnings[i].flag == WARNING_FORCE_OFF)
668 *warnings[i].flag = WARNING_OFF;
669 }
670 }
671
672 static void handle_switch_W_finalize(void)
673 {
674 handle_onoff_switch_finalize(warnings, ARRAY_SIZE(warnings));
675
676 /* default Wdeclarationafterstatement based on the C dialect */
677 if (-1 == Wdeclarationafterstatement)
678 {
679 switch (standard)
680 {
681 case STANDARD_C89:
682 case STANDARD_C94:
683 Wdeclarationafterstatement = 1;
684 break;
685
686 case STANDARD_C99:
687 case STANDARD_GNU89:
688 case STANDARD_GNU99:
689 case STANDARD_C11:
690 case STANDARD_GNU11:
691 Wdeclarationafterstatement = 0;
692 break;
693
694 default:
695 assert (0);
696 }
697
698 }
699 }
700
701 static void handle_switch_v_finalize(void)
702 {
703 handle_onoff_switch_finalize(debugs, ARRAY_SIZE(debugs));
704 }
705
706 static char **handle_switch_U(char *arg, char **next)
707 {
708 const char *name = arg + 1;
709 if (*name == '\0')
710 name = *++next;
711 add_pre_buffer ("#undef %s\n", name);
712 return next;
713 }
714
715 static char **handle_switch_O(char *arg, char **next)
716 {
717 int level = 1;
718 if (arg[1] >= '0' && arg[1] <= '9')
719 level = arg[1] - '0';
720 optimize = level;
721 optimize_size = arg[1] == 's';
722 return next;
723 }
724
725 static char **handle_switch_fmemcpy_max_count(char *arg, char **next)
726 {
727 unsigned long long val;
728 char *end;
729
730 val = strtoull(arg, &end, 0);
731 if (*end != '\0' || end == arg)
732 die("error: missing argument to \"-fmemcpy-max-count=\"");
733
734 if (val == 0)
735 val = ~0ULL;
736 fmemcpy_max_count = val;
737 return next;
738 }
739
740 static char **handle_switch_ftabstop(char *arg, char **next)
741 {
742 char *end;
743 unsigned long val;
744
745 if (*arg == '\0')
746 die("error: missing argument to \"-ftabstop=\"");
747
748 /* we silently ignore silly values */
749 val = strtoul(arg, &end, 10);
750 if (*end == '\0' && 1 <= val && val <= 100)
751 tabstop = val;
752
753 return next;
754 }
755
756 static int funsigned_char;
757 static void handle_funsigned_char(void)
758 {
759 if (funsigned_char) {
760 char_ctype.ctype.modifiers &= ~MOD_SIGNED;
761 char_ctype.ctype.modifiers |= MOD_UNSIGNED;
762 }
763 }
764
765 static char **handle_switch_fdump(char *arg, char **next)
766 {
767 if (!strncmp(arg, "linearize", 9)) {
768 arg += 9;
769 if (*arg == '\0')
770 fdump_linearize = 1;
771 else if (!strcmp(arg, "=only"))
772 fdump_linearize = 2;
773 else
774 goto err;
775 }
776
777 /* ignore others flags */
778 return next;
779
780 err:
781 die("error: unknown flag \"-fdump-%s\"", arg);
782 }
783
784 static char **handle_switch_f(char *arg, char **next)
785 {
786 arg++;
787
788 if (!strncmp(arg, "tabstop=", 8))
789 return handle_switch_ftabstop(arg+8, next);
790 if (!strncmp(arg, "dump-", 5))
791 return handle_switch_fdump(arg+5, next);
792 if (!strncmp(arg, "memcpy-max-count=", 17))
793 return handle_switch_fmemcpy_max_count(arg+17, next);
794
795 if (!strcmp(arg, "unsigned-char")) {
796 funsigned_char = 1;
797 return next;
798 }
799
800 /* handle switches w/ arguments above, boolean and only boolean below */
801 if (handle_simple_switch(arg, "mem-report", &fmem_report))
802 return next;
803
804 return next;
805 }
806
807 static char **handle_switch_G(char *arg, char **next)
808 {
809 if (!strcmp (arg, "G") && *next)
810 return next + 1; // "-G 0"
811 else
812 return next; // "-G0" or (bogus) terminal "-G"
813 }
814
815 static char **handle_switch_a(char *arg, char **next)
816 {
817 if (!strcmp (arg, "ansi"))
818 standard = STANDARD_C89;
819
820 return next;
821 }
822
823 static char **handle_switch_s(char *arg, char **next)
824 {
825 if (!strncmp (arg, "std=", 4))
826 {
827 arg += 4;
828
829 if (!strcmp (arg, "c89") ||
830 !strcmp (arg, "iso9899:1990"))
831 standard = STANDARD_C89;
832
833 else if (!strcmp (arg, "iso9899:199409"))
834 standard = STANDARD_C94;
835
836 else if (!strcmp (arg, "c99") ||
837 !strcmp (arg, "c9x") ||
838 !strcmp (arg, "iso9899:1999") ||
839 !strcmp (arg, "iso9899:199x"))
840 standard = STANDARD_C99;
841
842 else if (!strcmp (arg, "gnu89"))
843 standard = STANDARD_GNU89;
844
845 else if (!strcmp (arg, "gnu99") || !strcmp (arg, "gnu9x"))
846 standard = STANDARD_GNU99;
847
848 else if (!strcmp(arg, "c11") ||
849 !strcmp(arg, "c1x") ||
850 !strcmp(arg, "iso9899:2011"))
851 standard = STANDARD_C11;
852
853 else if (!strcmp(arg, "gnu11"))
854 standard = STANDARD_GNU11;
855
856 else
857 die ("Unsupported C dialect");
858 }
859
860 return next;
861 }
862
863 static char **handle_nostdinc(char *arg, char **next)
864 {
865 add_pre_buffer("#nostdinc\n");
866 return next;
867 }
868
869 static char **handle_switch_n(char *arg, char **next)
870 {
871 if (!strcmp (arg, "nostdinc"))
872 return handle_nostdinc(arg, next);
873
874 return next;
875 }
876
877 static char **handle_base_dir(char *arg, char **next)
878 {
879 gcc_base_dir = *++next;
880 if (!gcc_base_dir)
881 die("missing argument for -gcc-base-dir option");
882 return next;
883 }
884
885 static char **handle_no_lineno(char *arg, char **next)
886 {
887 no_lineno = 1;
888 return next;
889 }
890
891 static char **handle_switch_g(char *arg, char **next)
892 {
893 if (!strcmp (arg, "gcc-base-dir"))
894 return handle_base_dir(arg, next);
895
896 return next;
897 }
898
899 static char **handle_version(char *arg, char **next)
900 {
901 printf("%s\n", SPARSE_VERSION);
902 exit(0);
903 }
904
905 static char **handle_param(char *arg, char **next)
906 {
907 char *value = NULL;
908
909 /* Ignore smatch's --param-mapper */
910 if (strcmp(arg, "-mapper") == 0)
911 return next;
912
913
914 /* For now just skip any '--param=*' or '--param *' */
915 if (*arg == '\0') {
916 value = *++next;
917 } else if (isspace((unsigned char)*arg) || *arg == '=') {
918 value = ++arg;
919 }
920
921 if (!value)
922 die("missing argument for --param option");
923
924 return next;
925 }
926
927 struct switches {
928 const char *name;
929 char **(*fn)(char *, char **);
930 unsigned int prefix:1;
931 };
932
933 static char **handle_long_options(char *arg, char **next)
934 {
935 static struct switches cmd[] = {
936 { "param", handle_param, 1 },
937 { "version", handle_version },
938 { "nostdinc", handle_nostdinc },
939 { "gcc-base-dir", handle_base_dir},
940 { "no-lineno", handle_no_lineno},
941 { NULL, NULL }
942 };
943 struct switches *s = cmd;
944
945 while (s->name) {
946 int optlen = strlen(s->name);
947 if (!strncmp(s->name, arg, optlen + !s->prefix))
948 return s->fn(arg + optlen, next);
949 s++;
950 }
951 return next;
952 }
953
954 static char **handle_switch(char *arg, char **next)
955 {
956 switch (*arg) {
957 case 'a': return handle_switch_a(arg, next);
958 case 'D': return handle_switch_D(arg, next);
959 case 'd': return handle_switch_d(arg, next);
960 case 'E': return handle_switch_E(arg, next);
961 case 'f': return handle_switch_f(arg, next);
962 case 'g': return handle_switch_g(arg, next);
963 case 'G': return handle_switch_G(arg, next);
964 case 'I': return handle_switch_I(arg, next);
965 case 'i': return handle_switch_i(arg, next);
966 case 'M': return handle_switch_M(arg, next);
967 case 'm': return handle_switch_m(arg, next);
968 case 'n': return handle_switch_n(arg, next);
969 case 'o': return handle_switch_o(arg, next);
970 case 'O': return handle_switch_O(arg, next);
971 case 's': return handle_switch_s(arg, next);
972 case 'U': return handle_switch_U(arg, next);
973 case 'v': return handle_switch_v(arg, next);
974 case 'W': return handle_switch_W(arg, next);
975 case '-': return handle_long_options(arg + 1, next);
976 default:
977 break;
978 }
979
980 /*
981 * Ignore unknown command line options:
982 * they're probably gcc switches
983 */
984 return next;
985 }
986
987 static void predefined_sizeof(const char *name, unsigned bits)
988 {
989 add_pre_buffer("#weak_define __SIZEOF_%s__ %d\n", name, bits/8);
990 }
991
992 static void predefined_max(const char *name, const char *suffix, unsigned bits)
993 {
994 unsigned long long max = (1ULL << (bits - 1 )) - 1;
995
996 add_pre_buffer("#weak_define __%s_MAX__ %#llx%s\n", name, max, suffix);
997 }
998
999 static void predefined_type_size(const char *name, const char *suffix, unsigned bits)
1000 {
1001 predefined_max(name, suffix, bits);
1002 predefined_sizeof(name, bits);
1003 }
1004
1005 static void predefined_macros(void)
1006 {
1007 add_pre_buffer("#define __CHECKER__ 1\n");
1008
1009 predefined_sizeof("SHORT", bits_in_short);
1010 predefined_max("SHRT", "", bits_in_short);
1011 predefined_max("SCHAR", "", bits_in_char);
1012 predefined_max("WCHAR", "", bits_in_wchar);
1013 add_pre_buffer("#weak_define __CHAR_BIT__ %d\n", bits_in_char);
1014
1015 predefined_type_size("INT", "", bits_in_int);
1016 predefined_type_size("LONG", "L", bits_in_long);
1017 predefined_type_size("LONG_LONG", "LL", bits_in_longlong);
1018
1019 predefined_sizeof("INT128", 128);
1020
1021 predefined_sizeof("SIZE_T", bits_in_pointer);
1022 predefined_sizeof("PTRDIFF_T", bits_in_pointer);
1023 predefined_sizeof("POINTER", bits_in_pointer);
1024
1025 predefined_sizeof("FLOAT", bits_in_float);
1026 predefined_sizeof("DOUBLE", bits_in_double);
1027 predefined_sizeof("LONG_DOUBLE", bits_in_longdouble);
1028
1029 add_pre_buffer("#weak_define __%s_ENDIAN__ 1\n",
1030 arch_big_endian ? "BIG" : "LITTLE");
1031
1032 add_pre_buffer("#weak_define __ORDER_LITTLE_ENDIAN__ 1234\n");
1033 add_pre_buffer("#weak_define __ORDER_BIG_ENDIAN__ 4321\n");
1034 add_pre_buffer("#weak_define __ORDER_PDP_ENDIAN__ 3412\n");
1035 add_pre_buffer("#weak_define __BYTE_ORDER__ __ORDER_%s_ENDIAN__\n",
1036 arch_big_endian ? "BIG" : "LITTLE");
1037
1038 add_pre_buffer("#weak_define __PRAGMA_REDEFINE_EXTNAME 1\n");
1039
1040 /*
1041 * This is far from perfect...
1042 */
1043 #ifdef __sun
1044 add_pre_buffer("#weak_define __unix__ 1\n");
1045 add_pre_buffer("#weak_define __unix 1\n");
1046 add_pre_buffer("#weak_define unix 1\n");
1047 add_pre_buffer("#weak_define __sun__ 1\n");
1048 add_pre_buffer("#weak_define __sun 1\n");
1049 add_pre_buffer("#weak_define sun 1\n");
1050 add_pre_buffer("#weak_define __svr4__ 1\n");
1051 #endif
1052 }
1053
1054 void declare_builtin_functions(void)
1055 {
1056 /* Gaah. gcc knows tons of builtin <string.h> functions */
1057 add_pre_buffer("extern void *__builtin_memchr(const void *, int, __SIZE_TYPE__);\n");
1058 add_pre_buffer("extern void *__builtin_memcpy(void *, const void *, __SIZE_TYPE__);\n");
1059 add_pre_buffer("extern void *__builtin_mempcpy(void *, const void *, __SIZE_TYPE__);\n");
1060 add_pre_buffer("extern void *__builtin_memmove(void *, const void *, __SIZE_TYPE__);\n");
1061 add_pre_buffer("extern void *__builtin_memset(void *, int, __SIZE_TYPE__);\n");
1062 add_pre_buffer("extern int __builtin_memcmp(const void *, const void *, __SIZE_TYPE__);\n");
1063 add_pre_buffer("extern char *__builtin_strcat(char *, const char *);\n");
1064 add_pre_buffer("extern char *__builtin_strncat(char *, const char *, __SIZE_TYPE__);\n");
1065 add_pre_buffer("extern int __builtin_strcmp(const char *, const char *);\n");
1066 add_pre_buffer("extern int __builtin_strncmp(const char *, const char *, __SIZE_TYPE__);\n");
1067 add_pre_buffer("extern int __builtin_strcasecmp(const char *, const char *);\n");
1068 add_pre_buffer("extern int __builtin_strncasecmp(const char *, const char *, __SIZE_TYPE__);\n");
1069 add_pre_buffer("extern char *__builtin_strchr(const char *, int);\n");
1070 add_pre_buffer("extern char *__builtin_strrchr(const char *, int);\n");
1071 add_pre_buffer("extern char *__builtin_strcpy(char *, const char *);\n");
1072 add_pre_buffer("extern char *__builtin_strncpy(char *, const char *, __SIZE_TYPE__);\n");
1073 add_pre_buffer("extern char *__builtin_strdup(const char *);\n");
1074 add_pre_buffer("extern char *__builtin_strndup(const char *, __SIZE_TYPE__);\n");
1075 add_pre_buffer("extern __SIZE_TYPE__ __builtin_strspn(const char *, const char *);\n");
1076 add_pre_buffer("extern __SIZE_TYPE__ __builtin_strcspn(const char *, const char *);\n");
1077 add_pre_buffer("extern char * __builtin_strpbrk(const char *, const char *);\n");
1078 add_pre_buffer("extern char* __builtin_stpcpy(const char *, const char*);\n");
1079 add_pre_buffer("extern char* __builtin_stpncpy(const char *, const char*, __SIZE_TYPE__);\n");
1080 add_pre_buffer("extern __SIZE_TYPE__ __builtin_strlen(const char *);\n");
1081 add_pre_buffer("extern char *__builtin_strstr(const char *, const char *);\n");
1082 add_pre_buffer("extern char *__builtin_strcasestr(const char *, const char *);\n");
1083 add_pre_buffer("extern char *__builtin_strnstr(const char *, const char *, __SIZE_TYPE__);\n");
1084
1085 /* And even some from <strings.h> */
1086 add_pre_buffer("extern int __builtin_bcmp(const void *, const void *, __SIZE_TYPE__);\n");
1087 add_pre_buffer("extern void __builtin_bcopy(const void *, void *, __SIZE_TYPE__);\n");
1088 add_pre_buffer("extern void __builtin_bzero(void *, __SIZE_TYPE__);\n");
1089 add_pre_buffer("extern char*__builtin_index(const char *, int);\n");
1090 add_pre_buffer("extern char*__builtin_rindex(const char *, int);\n");
1091
1092 /* And bitwise operations.. */
1093 add_pre_buffer("extern int __builtin_clrsb(int);\n");
1094 add_pre_buffer("extern int __builtin_clrsbl(long);\n");
1095 add_pre_buffer("extern int __builtin_clrsbll(long long);\n");
1096 add_pre_buffer("extern int __builtin_clz(int);\n");
1097 add_pre_buffer("extern int __builtin_clzl(long);\n");
1098 add_pre_buffer("extern int __builtin_clzll(long long);\n");
1099 add_pre_buffer("extern int __builtin_ctz(int);\n");
1100 add_pre_buffer("extern int __builtin_ctzl(long);\n");
1101 add_pre_buffer("extern int __builtin_ctzll(long long);\n");
1102 add_pre_buffer("extern int __builtin_ffs(int);\n");
1103 add_pre_buffer("extern int __builtin_ffsl(long);\n");
1104 add_pre_buffer("extern int __builtin_ffsll(long long);\n");
1105 add_pre_buffer("extern int __builtin_parity(unsigned int);\n");
1106 add_pre_buffer("extern int __builtin_parityl(unsigned long);\n");
1107 add_pre_buffer("extern int __builtin_parityll(unsigned long long);\n");
1108 add_pre_buffer("extern int __builtin_popcount(unsigned int);\n");
1109 add_pre_buffer("extern int __builtin_popcountl(unsigned long);\n");
1110 add_pre_buffer("extern int __builtin_popcountll(unsigned long long);\n");
1111
1112 /* And byte swaps.. */
1113 add_pre_buffer("extern unsigned short __builtin_bswap16(unsigned short);\n");
1114 add_pre_buffer("extern unsigned int __builtin_bswap32(unsigned int);\n");
1115 add_pre_buffer("extern unsigned long long __builtin_bswap64(unsigned long long);\n");
1116
1117 /* And atomic memory access functions.. */
1118 add_pre_buffer("extern int __sync_fetch_and_add(void *, ...);\n");
1119 add_pre_buffer("extern int __sync_fetch_and_sub(void *, ...);\n");
1120 add_pre_buffer("extern int __sync_fetch_and_or(void *, ...);\n");
1121 add_pre_buffer("extern int __sync_fetch_and_and(void *, ...);\n");
1122 add_pre_buffer("extern int __sync_fetch_and_xor(void *, ...);\n");
1123 add_pre_buffer("extern int __sync_fetch_and_nand(void *, ...);\n");
1124 add_pre_buffer("extern int __sync_add_and_fetch(void *, ...);\n");
1125 add_pre_buffer("extern int __sync_sub_and_fetch(void *, ...);\n");
1126 add_pre_buffer("extern int __sync_or_and_fetch(void *, ...);\n");
1127 add_pre_buffer("extern int __sync_and_and_fetch(void *, ...);\n");
1128 add_pre_buffer("extern int __sync_xor_and_fetch(void *, ...);\n");
1129 add_pre_buffer("extern int __sync_nand_and_fetch(void *, ...);\n");
1130 add_pre_buffer("extern int __sync_bool_compare_and_swap(void *, ...);\n");
1131 add_pre_buffer("extern int __sync_val_compare_and_swap(void *, ...);\n");
1132 add_pre_buffer("extern void __sync_synchronize();\n");
1133 add_pre_buffer("extern int __sync_lock_test_and_set(void *, ...);\n");
1134 add_pre_buffer("extern void __sync_lock_release(void *, ...);\n");
1135
1136 /* And some random ones.. */
1137 add_pre_buffer("extern void *__builtin_return_address(unsigned int);\n");
1138 add_pre_buffer("extern void *__builtin_extract_return_addr(void *);\n");
1139 add_pre_buffer("extern void *__builtin_frame_address(unsigned int);\n");
1140 add_pre_buffer("extern void __builtin_trap(void);\n");
1141 add_pre_buffer("extern void *__builtin_alloca(__SIZE_TYPE__);\n");
1142 add_pre_buffer("extern void __builtin_prefetch (const void *, ...);\n");
1143 add_pre_buffer("extern long __builtin_alpha_extbl(long, long);\n");
1144 add_pre_buffer("extern long __builtin_alpha_extwl(long, long);\n");
1145 add_pre_buffer("extern long __builtin_alpha_insbl(long, long);\n");
1146 add_pre_buffer("extern long __builtin_alpha_inswl(long, long);\n");
1147 add_pre_buffer("extern long __builtin_alpha_insql(long, long);\n");
1148 add_pre_buffer("extern long __builtin_alpha_inslh(long, long);\n");
1149 add_pre_buffer("extern long __builtin_alpha_cmpbge(long, long);\n");
1150 add_pre_buffer("extern int __builtin_abs(int);\n");
1151 add_pre_buffer("extern long __builtin_labs(long);\n");
1152 add_pre_buffer("extern long long __builtin_llabs(long long);\n");
1153 add_pre_buffer("extern double __builtin_fabs(double);\n");
1154 add_pre_buffer("extern __SIZE_TYPE__ __builtin_va_arg_pack_len(void);\n");
1155
1156 /* Add Blackfin-specific stuff */
1157 add_pre_buffer(
1158 "#ifdef __bfin__\n"
1159 "extern void __builtin_bfin_csync(void);\n"
1160 "extern void __builtin_bfin_ssync(void);\n"
1161 "extern int __builtin_bfin_norm_fr1x32(int);\n"
1162 "#endif\n"
1163 );
1164
1165 /* And some floating point stuff.. */
1166 add_pre_buffer("extern int __builtin_isgreater(float, float);\n");
1167 add_pre_buffer("extern int __builtin_isgreaterequal(float, float);\n");
1168 add_pre_buffer("extern int __builtin_isless(float, float);\n");
1169 add_pre_buffer("extern int __builtin_islessequal(float, float);\n");
1170 add_pre_buffer("extern int __builtin_islessgreater(float, float);\n");
1171 add_pre_buffer("extern int __builtin_isunordered(float, float);\n");
1172
1173 /* And some INFINITY / NAN stuff.. */
1174 add_pre_buffer("extern double __builtin_huge_val(void);\n");
1175 add_pre_buffer("extern float __builtin_huge_valf(void);\n");
1176 add_pre_buffer("extern long double __builtin_huge_vall(void);\n");
1177 add_pre_buffer("extern double __builtin_inf(void);\n");
1178 add_pre_buffer("extern float __builtin_inff(void);\n");
1179 add_pre_buffer("extern long double __builtin_infl(void);\n");
1180 add_pre_buffer("extern double __builtin_nan(const char *);\n");
1181 add_pre_buffer("extern float __builtin_nanf(const char *);\n");
1182 add_pre_buffer("extern long double __builtin_nanl(const char *);\n");
1183 add_pre_buffer("extern int __builtin_isinf_sign(float);\n");
1184 add_pre_buffer("extern int __builtin_isfinite(float);\n");
1185 add_pre_buffer("extern int __builtin_isnan(float);\n");
1186
1187 /* And some __FORTIFY_SOURCE ones.. */
1188 add_pre_buffer ("extern __SIZE_TYPE__ __builtin_object_size(const void *, int);\n");
1189 add_pre_buffer ("extern void * __builtin___memcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1190 add_pre_buffer ("extern void * __builtin___memmove_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1191 add_pre_buffer ("extern void * __builtin___mempcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1192 add_pre_buffer ("extern void * __builtin___memset_chk(void *, int, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1193 add_pre_buffer ("extern int __builtin___sprintf_chk(char *, int, __SIZE_TYPE__, const char *, ...);\n");
1194 add_pre_buffer ("extern int __builtin___snprintf_chk(char *, __SIZE_TYPE__, int , __SIZE_TYPE__, const char *, ...);\n");
1195 add_pre_buffer ("extern char * __builtin___stpcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
1196 add_pre_buffer ("extern char * __builtin___strcat_chk(char *, const char *, __SIZE_TYPE__);\n");
1197 add_pre_buffer ("extern char * __builtin___strcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
1198 add_pre_buffer ("extern char * __builtin___strncat_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1199 add_pre_buffer ("extern char * __builtin___strncpy_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
1200 add_pre_buffer ("extern int __builtin___vsprintf_chk(char *, int, __SIZE_TYPE__, const char *, __builtin_va_list);\n");
1201 add_pre_buffer ("extern int __builtin___vsnprintf_chk(char *, __SIZE_TYPE__, int, __SIZE_TYPE__, const char *, __builtin_va_list ap);\n");
1202 add_pre_buffer ("extern void __builtin_unreachable(void);\n");
1203
1204 /* And some from <stdlib.h> */
1205 add_pre_buffer("extern void __builtin_abort(void);\n");
1206 add_pre_buffer("extern void *__builtin_calloc(__SIZE_TYPE__, __SIZE_TYPE__);\n");
1207 add_pre_buffer("extern void __builtin_exit(int);\n");
1208 add_pre_buffer("extern void *__builtin_malloc(__SIZE_TYPE__);\n");
1209 add_pre_buffer("extern void *__builtin_realloc(void *, __SIZE_TYPE__);\n");
1210 add_pre_buffer("extern void __builtin_free(void *);\n");
1211
1212 /* And some from <stdio.h> */
1213 add_pre_buffer("extern int __builtin_printf(const char *, ...);\n");
1214 add_pre_buffer("extern int __builtin_sprintf(char *, const char *, ...);\n");
1215 add_pre_buffer("extern int __builtin_snprintf(char *, __SIZE_TYPE__, const char *, ...);\n");
1216 add_pre_buffer("extern int __builtin_puts(const char *);\n");
1217 add_pre_buffer("extern int __builtin_vprintf(const char *, __builtin_va_list);\n");
1218 add_pre_buffer("extern int __builtin_vsprintf(char *, const char *, __builtin_va_list);\n");
1219 add_pre_buffer("extern int __builtin_vsnprintf(char *, __SIZE_TYPE__, const char *, __builtin_va_list ap);\n");
1220 }
1221
1222 void create_builtin_stream(void)
1223 {
1224 add_pre_buffer("#weak_define __GNUC__ %d\n", gcc_major);
1225 add_pre_buffer("#weak_define __GNUC_MINOR__ %d\n", gcc_minor);
1226 add_pre_buffer("#weak_define __GNUC_PATCHLEVEL__ %d\n", gcc_patchlevel);
1227
1228 /* add the multiarch include directories, if any */
1229 if (multiarch_dir && *multiarch_dir) {
1230 add_pre_buffer("#add_system \"/usr/include/%s\"\n", multiarch_dir);
1231 add_pre_buffer("#add_system \"/usr/local/include/%s\"\n", multiarch_dir);
1232 }
1233
1234 /* We add compiler headers path here because we have to parse
1235 * the arguments to get it, falling back to default. */
1236 add_pre_buffer("#add_system \"%s/include\"\n", gcc_base_dir);
1237 add_pre_buffer("#add_system \"%s/include-fixed\"\n", gcc_base_dir);
1238
1239 add_pre_buffer("#define __extension__\n");
1240 add_pre_buffer("#define __pragma__\n");
1241 add_pre_buffer("#define _Pragma(x)\n");
1242
1243 // gcc defines __SIZE_TYPE__ to be size_t. For linux/i86 and
1244 // solaris/sparc that is really "unsigned int" and for linux/x86_64
1245 // it is "long unsigned int". In either case we can probably
1246 // get away with this. We need the #weak_define as cgcc will define
1247 // the right __SIZE_TYPE__.
1248 if (size_t_ctype == &ulong_ctype)
1249 add_pre_buffer("#weak_define __SIZE_TYPE__ long unsigned int\n");
1250 else
1251 add_pre_buffer("#weak_define __SIZE_TYPE__ unsigned int\n");
1252 add_pre_buffer("#weak_define __STDC__ 1\n");
1253
1254 switch (standard)
1255 {
1256 case STANDARD_C89:
1257 add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1258 break;
1259
1260 case STANDARD_C94:
1261 add_pre_buffer("#weak_define __STDC_VERSION__ 199409L\n");
1262 add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1263 break;
1264
1265 case STANDARD_C99:
1266 add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
1267 add_pre_buffer("#weak_define __STRICT_ANSI__\n");
1268 break;
1269
1270 case STANDARD_GNU89:
1271 break;
1272
1273 case STANDARD_GNU99:
1274 add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
1275 break;
1276
1277 case STANDARD_C11:
1278 add_pre_buffer("#weak_define __STRICT_ANSI__ 1\n");
1279 case STANDARD_GNU11:
1280 add_pre_buffer("#weak_define __STDC_NO_ATOMICS__ 1\n");
1281 add_pre_buffer("#weak_define __STDC_NO_COMPLEX__ 1\n");
1282 add_pre_buffer("#weak_define __STDC_NO_THREADS__ 1\n");
1283 add_pre_buffer("#weak_define __STDC_VERSION__ 201112L\n");
1284 break;
1285
1286 default:
1287 assert (0);
1288 }
1289
1290 add_pre_buffer("#define __builtin_stdarg_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
1291 add_pre_buffer("#define __builtin_va_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
1292 add_pre_buffer("#define __builtin_ms_va_start(a,b) ((a) = (__builtin_ms_va_list)(&(b)))\n");
1293 add_pre_buffer("#define __builtin_va_arg(arg,type) ({ type __va_arg_ret = *(type *)(arg); arg += sizeof(type); __va_arg_ret; })\n");
1294 add_pre_buffer("#define __builtin_va_alist (*(void *)0)\n");
1295 add_pre_buffer("#define __builtin_va_arg_incr(x) ((x) + 1)\n");
1296 add_pre_buffer("#define __builtin_va_copy(dest, src) ({ dest = src; (void)0; })\n");
1297 add_pre_buffer("#define __builtin_ms_va_copy(dest, src) ({ dest = src; (void)0; })\n");
1298 add_pre_buffer("#define __builtin_va_end(arg)\n");
1299 add_pre_buffer("#define __builtin_ms_va_end(arg)\n");
1300 add_pre_buffer("#define __builtin_va_arg_pack()\n");
1301
1302 /* FIXME! We need to do these as special magic macros at expansion time! */
1303 add_pre_buffer("#define __BASE_FILE__ \"base_file.c\"\n");
1304
1305 if (optimize)
1306 add_pre_buffer("#define __OPTIMIZE__ 1\n");
1307 if (optimize_size)
1308 add_pre_buffer("#define __OPTIMIZE_SIZE__ 1\n");
1309 }
1310
1311 static struct symbol_list *sparse_tokenstream(struct token *token)
1312 {
1313 int builtin = token && !token->pos.stream;
1314
1315 // Preprocess the stream
1316 token = preprocess(token);
1317
1318 if (dump_macro_defs && !builtin)
1319 dump_macro_definitions();
1320
1321 if (preprocess_only) {
1322 while (!eof_token(token)) {
1323 int prec = 1;
1324 struct token *next = token->next;
1325 const char *separator = "";
1326 if (next->pos.whitespace)
1327 separator = " ";
1328 if (next->pos.newline) {
1329 separator = "\n\t\t\t\t\t";
1330 prec = next->pos.pos;
1331 if (prec > 4)
1332 prec = 4;
1333 }
1334 printf("%s%.*s", show_token(token), prec, separator);
1335 token = next;
1336 }
1337 putchar('\n');
1338
1339 return NULL;
1340 }
1341
1342 // Parse the resulting C code
1343 while (!eof_token(token))
1344 token = external_declaration(token, &translation_unit_used_list, NULL);
1345 return translation_unit_used_list;
1346 }
1347
1348 static struct symbol_list *sparse_file(const char *filename)
1349 {
1350 int fd;
1351 struct token *token;
1352
1353 if (strcmp (filename, "-") == 0) {
1354 fd = 0;
1355 } else {
1356 fd = open(filename, O_RDONLY);
1357 if (fd < 0)
1358 die("No such file: %s", filename);
1359 }
1360
1361 // Tokenize the input stream
1362 token = tokenize(filename, fd, NULL, includepath);
1363 store_all_tokens(token);
1364 close(fd);
1365
1366 return sparse_tokenstream(token);
1367 }
1368
1369 static int endswith(const char *str, const char *suffix)
1370 {
1371 const char *found = strstr(str, suffix);
1372 return (found && strcmp(found, suffix) == 0);
1373 }
1374
1375 /*
1376 * This handles the "-include" directive etc: we're in global
1377 * scope, and all types/macros etc will affect all the following
1378 * files.
1379 *
1380 * NOTE NOTE NOTE! "#undef" of anything in this stage will
1381 * affect all subsequent files too, i.e. we can have non-local
1382 * behaviour between files!
1383 */
1384 static struct symbol_list *sparse_initial(void)
1385 {
1386 int i;
1387
1388 // Prepend any "include" file to the stream.
1389 // We're in global scope, it will affect all files!
1390 for (i = 0; i < cmdline_include_nr; i++)
1391 add_pre_buffer("#argv_include \"%s\"\n", cmdline_include[i]);
1392
1393 return sparse_tokenstream(pre_buffer_begin);
1394 }
1395
1396 struct symbol_list *sparse_initialize(int argc, char **argv, struct string_list **filelist)
1397 {
1398 char **args;
1399 struct symbol_list *list;
1400
1401 // Initialize symbol stream first, so that we can add defines etc
1402 init_symbols();
1403 init_include_path();
1404
1405 progname = argv[0];
1406
1407 args = argv;
1408 for (;;) {
1409 char *arg = *++args;
1410 if (!arg)
1411 break;
1412
1413 if (arg[0] == '-' && arg[1]) {
1414 args = handle_switch(arg+1, args);
1415 continue;
1416 }
1417
1418 if (endswith(arg, ".a") || endswith(arg, ".so") ||
1419 endswith(arg, ".so.1") || endswith(arg, ".o"))
1420 continue;
1421
1422 add_ptr_list_notag(filelist, arg);
1423 }
1424 handle_switch_W_finalize();
1425 handle_switch_v_finalize();
1426
1427 handle_arch_finalize();
1428
1429 list = NULL;
1430 if (!ptr_list_empty(filelist)) {
1431 // Initialize type system
1432 init_ctype();
1433 handle_funsigned_char();
1434
1435 create_builtin_stream();
1436 predefined_macros();
1437 if (!preprocess_only)
1438 declare_builtin_functions();
1439
1440 list = sparse_initial();
1441
1442 /*
1443 * Protect the initial token allocations, since
1444 * they need to survive all the others
1445 */
1446 protect_token_alloc();
1447 }
1448 /*
1449 * Evaluate the complete symbol list
1450 * Note: This is not needed for normal cases.
1451 * These symbols should only be predefined defines and
1452 * declaratons which will be evaluated later, when needed.
1453 * This is also the case when a file is directly included via
1454 * '-include <file>' on the command line *AND* the file only
1455 * contains defines, declarations and inline definitions.
1456 * However, in the rare cases where the given file should
1457 * contain some definitions, these will never be evaluated
1458 * and thus won't be able to be linearized correctly.
1459 * Hence the evaluate_symbol_list() here under.
1460 */
1461 evaluate_symbol_list(list);
1462 return list;
1463 }
1464
1465 struct symbol_list * sparse_keep_tokens(char *filename)
1466 {
1467 struct symbol_list *res;
1468
1469 /* Clear previous symbol list */
1470 translation_unit_used_list = NULL;
1471
1472 new_file_scope();
1473 res = sparse_file(filename);
1474
1475 /* And return it */
1476 return res;
1477 }
1478
1479
1480 struct symbol_list * __sparse(char *filename)
1481 {
1482 struct symbol_list *res;
1483
1484 res = sparse_keep_tokens(filename);
1485
1486 /* Drop the tokens for this file after parsing */
1487 clear_token_alloc();
1488
1489 /* And return it */
1490 return res;
1491 }
1492
1493 struct symbol_list * sparse(char *filename)
1494 {
1495 struct symbol_list *res = __sparse(filename);
1496
1497 if (has_error & ERROR_CURR_PHASE)
1498 has_error = ERROR_PREV_PHASE;
1499 /* Evaluate the complete symbol list */
1500 evaluate_symbol_list(res);
1501
1502 return res;
1503 }