param_filter: update to stree
[smatch.git] / lib.c
blob6b32c44e403bc513dcfa72bbbbb9b9af95381dcf
1 /*
2 * 'sparse' library helper routines.
4 * Copyright (C) 2003 Transmeta Corp.
5 * 2003-2004 Linus Torvalds
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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.
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>
35 #include <sys/types.h>
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"
48 int verbose, optimize, optimize_size, preprocessing;
49 int die_if_error = 0;
51 #ifndef __GNUC__
52 # define __GNUC__ 2
53 # define __GNUC_MINOR__ 95
54 # define __GNUC_PATCHLEVEL__ 0
55 #endif
57 int gcc_major = __GNUC__;
58 int gcc_minor = __GNUC_MINOR__;
59 int gcc_patchlevel = __GNUC_PATCHLEVEL__;
61 static const char *gcc_base_dir = GCC_BASE;
63 struct token *skip_to(struct token *token, int op)
65 while (!match_op(token, op) && !eof_token(token))
66 token = token->next;
67 return token;
70 struct token *expect(struct token *token, int op, const char *where)
72 if (!match_op(token, op)) {
73 static struct token bad_token;
74 if (token != &bad_token) {
75 bad_token.next = token;
76 sparse_error(token->pos, "Expected %s %s", show_special(op), where);
77 sparse_error(token->pos, "got %s", show_token(token));
79 if (op == ';')
80 return skip_to(token, op);
81 return &bad_token;
83 return token->next;
86 unsigned int hexval(unsigned int c)
88 int retval = 256;
89 switch (c) {
90 case '0'...'9':
91 retval = c - '0';
92 break;
93 case 'a'...'f':
94 retval = c - 'a' + 10;
95 break;
96 case 'A'...'F':
97 retval = c - 'A' + 10;
98 break;
100 return retval;
103 static void do_warn(const char *type, struct position pos, const char * fmt, va_list args)
105 static char buffer[512];
106 const char *name;
108 vsprintf(buffer, fmt, args);
109 name = stream_name(pos.stream);
111 fprintf(stderr, "%s:%d:%d: %s%s\n",
112 name, pos.line, pos.pos, type, buffer);
115 static int max_warnings = 100;
116 static int show_info = 1;
118 void info(struct position pos, const char * fmt, ...)
120 va_list args;
122 if (!show_info)
123 return;
124 va_start(args, fmt);
125 do_warn("", pos, fmt, args);
126 va_end(args);
129 void warning(struct position pos, const char * fmt, ...)
131 va_list args;
133 if (!max_warnings) {
134 show_info = 0;
135 return;
138 if (!--max_warnings) {
139 show_info = 0;
140 fmt = "too many warnings";
143 va_start(args, fmt);
144 do_warn("warning: ", pos, fmt, args);
145 va_end(args);
148 static void do_error(struct position pos, const char * fmt, va_list args)
150 static int errors = 0;
151 die_if_error = 1;
152 show_info = 1;
153 /* Shut up warnings after an error */
154 max_warnings = 0;
155 if (errors > 100) {
156 static int once = 0;
157 show_info = 0;
158 if (once)
159 return;
160 fmt = "too many errors";
161 once = 1;
164 do_warn("error: ", pos, fmt, args);
165 errors++;
168 void sparse_error(struct position pos, const char * fmt, ...)
170 va_list args;
171 va_start(args, fmt);
172 do_error(pos, fmt, args);
173 va_end(args);
176 void expression_error(struct expression *expr, const char *fmt, ...)
178 va_list args;
179 va_start(args, fmt);
180 do_error(expr->pos, fmt, args);
181 va_end(args);
182 expr->ctype = &bad_ctype;
185 void error_die(struct position pos, const char * fmt, ...)
187 va_list args;
188 va_start(args, fmt);
189 do_warn("error: ", pos, fmt, args);
190 va_end(args);
191 exit(1);
194 void die(const char *fmt, ...)
196 va_list args;
197 static char buffer[512];
199 va_start(args, fmt);
200 vsnprintf(buffer, sizeof(buffer), fmt, args);
201 va_end(args);
203 fprintf(stderr, "%s\n", buffer);
204 exit(1);
207 static struct token *pre_buffer_begin = NULL;
208 static struct token *pre_buffer_end = NULL;
210 int Waddress_space = 1;
211 int Wbitwise = 0;
212 int Wcast_to_as = 0;
213 int Wcast_truncate = 1;
214 int Wcontext = 1;
215 int Wdecl = 1;
216 int Wdeclarationafterstatement = -1;
217 int Wdefault_bitfield_sign = 0;
218 int Wdesignated_init = 1;
219 int Wdo_while = 0;
220 int Winit_cstring = 0;
221 int Wenum_mismatch = 1;
222 int Wnon_pointer_null = 1;
223 int Wold_initializer = 1;
224 int Wone_bit_signed_bitfield = 1;
225 int Wparen_string = 0;
226 int Wptr_subtraction_blows = 0;
227 int Wreturn_void = 0;
228 int Wshadow = 0;
229 int Wtransparent_union = 0;
230 int Wtypesign = 0;
231 int Wundef = 0;
232 int Wuninitialized = 1;
233 int Wvla = 1;
235 int dbg_entry = 0;
236 int dbg_dead = 0;
238 int preprocess_only;
240 static enum { STANDARD_C89,
241 STANDARD_C94,
242 STANDARD_C99,
243 STANDARD_GNU89,
244 STANDARD_GNU99, } standard = STANDARD_GNU89;
246 #ifdef __x86_64__
247 #define ARCH_M64_DEFAULT 1
248 #else
249 #define ARCH_M64_DEFAULT 0
250 #endif
252 int arch_m64 = ARCH_M64_DEFAULT;
253 int arch_msize_long = 0;
255 #define CMDLINE_INCLUDE 20
256 static int cmdline_include_nr = 0;
257 static char *cmdline_include[CMDLINE_INCLUDE];
260 void add_pre_buffer(const char *fmt, ...)
262 va_list args;
263 unsigned int size;
264 struct token *begin, *end;
265 char buffer[4096];
267 va_start(args, fmt);
268 size = vsnprintf(buffer, sizeof(buffer), fmt, args);
269 va_end(args);
270 begin = tokenize_buffer(buffer, size, &end);
271 if (!pre_buffer_begin)
272 pre_buffer_begin = begin;
273 if (pre_buffer_end)
274 pre_buffer_end->next = begin;
275 pre_buffer_end = end;
278 static char **handle_switch_D(char *arg, char **next)
280 const char *name = arg + 1;
281 const char *value = "1";
283 if (!*name || isspace(*name))
284 die("argument to `-D' is missing");
286 for (;;) {
287 char c;
288 c = *++arg;
289 if (!c)
290 break;
291 if (isspace((unsigned char)c) || c == '=') {
292 *arg = '\0';
293 value = arg + 1;
294 break;
297 add_pre_buffer("#define %s %s\n", name, value);
298 return next;
301 static char **handle_switch_E(char *arg, char **next)
303 if (arg[1] == '\0')
304 preprocess_only = 1;
305 return next;
308 static char **handle_switch_I(char *arg, char **next)
310 char *path = arg+1;
312 switch (arg[1]) {
313 case '-':
314 add_pre_buffer("#split_include\n");
315 break;
317 case '\0': /* Plain "-I" */
318 path = *++next;
319 if (!path)
320 die("missing argument for -I option");
321 /* Fall through */
322 default:
323 add_pre_buffer("#add_include \"%s/\"\n", path);
325 return next;
328 static void add_cmdline_include(char *filename)
330 if (cmdline_include_nr >= CMDLINE_INCLUDE)
331 die("too many include files for %s\n", filename);
332 cmdline_include[cmdline_include_nr++] = filename;
335 static char **handle_switch_i(char *arg, char **next)
337 if (*next && !strcmp(arg, "include"))
338 add_cmdline_include(*++next);
339 else if (*next && !strcmp(arg, "imacros"))
340 add_cmdline_include(*++next);
341 else if (*next && !strcmp(arg, "isystem")) {
342 char *path = *++next;
343 if (!path)
344 die("missing argument for -isystem option");
345 add_pre_buffer("#add_isystem \"%s/\"\n", path);
346 } else if (*next && !strcmp(arg, "idirafter")) {
347 char *path = *++next;
348 if (!path)
349 die("missing argument for -idirafter option");
350 add_pre_buffer("#add_dirafter \"%s/\"\n", path);
352 return next;
355 static char **handle_switch_M(char *arg, char **next)
357 if (!strcmp(arg, "MF") || !strcmp(arg,"MQ") || !strcmp(arg,"MT")) {
358 if (!*next)
359 die("missing argument for -%s option", arg);
360 return next + 1;
362 return next;
365 static char **handle_switch_m(char *arg, char **next)
367 if (!strcmp(arg, "m64")) {
368 arch_m64 = 1;
369 } else if (!strcmp(arg, "m32")) {
370 arch_m64 = 0;
371 } else if (!strcmp(arg, "msize-long")) {
372 arch_msize_long = 1;
374 return next;
377 static void handle_arch_m64_finalize(void)
379 if (arch_m64) {
380 bits_in_long = 64;
381 max_int_alignment = 8;
382 bits_in_pointer = 64;
383 pointer_alignment = 8;
384 size_t_ctype = &ulong_ctype;
385 ssize_t_ctype = &long_ctype;
386 #ifdef __x86_64__
387 add_pre_buffer("#weak_define __x86_64__ 1\n");
388 #endif
392 static void handle_arch_msize_long_finalize(void)
394 if (arch_msize_long) {
395 size_t_ctype = &ulong_ctype;
396 ssize_t_ctype = &long_ctype;
400 static void handle_arch_finalize(void)
402 handle_arch_m64_finalize();
403 handle_arch_msize_long_finalize();
407 static char **handle_switch_o(char *arg, char **next)
409 if (!strcmp (arg, "o")) { // "-o foo"
410 if (!*++next)
411 die("argument to '-o' is missing");
413 // else "-ofoo"
415 return next;
418 static const struct warning {
419 const char *name;
420 int *flag;
421 } warnings[] = {
422 { "address-space", &Waddress_space },
423 { "bitwise", &Wbitwise },
424 { "cast-to-as", &Wcast_to_as },
425 { "cast-truncate", &Wcast_truncate },
426 { "context", &Wcontext },
427 { "decl", &Wdecl },
428 { "declaration-after-statement", &Wdeclarationafterstatement },
429 { "default-bitfield-sign", &Wdefault_bitfield_sign },
430 { "designated-init", &Wdesignated_init },
431 { "do-while", &Wdo_while },
432 { "enum-mismatch", &Wenum_mismatch },
433 { "init-cstring", &Winit_cstring },
434 { "non-pointer-null", &Wnon_pointer_null },
435 { "old-initializer", &Wold_initializer },
436 { "one-bit-signed-bitfield", &Wone_bit_signed_bitfield },
437 { "paren-string", &Wparen_string },
438 { "ptr-subtraction-blows", &Wptr_subtraction_blows },
439 { "return-void", &Wreturn_void },
440 { "shadow", &Wshadow },
441 { "transparent-union", &Wtransparent_union },
442 { "typesign", &Wtypesign },
443 { "undef", &Wundef },
444 { "uninitialized", &Wuninitialized },
445 { "vla", &Wvla },
448 enum {
449 WARNING_OFF,
450 WARNING_ON,
451 WARNING_FORCE_OFF
455 static char **handle_onoff_switch(char *arg, char **next, const struct warning warnings[], int n)
457 int flag = WARNING_ON;
458 char *p = arg + 1;
459 unsigned i;
461 if (!strcmp(p, "sparse-all")) {
462 for (i = 0; i < n; i++) {
463 if (*warnings[i].flag != WARNING_FORCE_OFF)
464 *warnings[i].flag = WARNING_ON;
468 // Prefixes "no" and "no-" mean to turn warning off.
469 if (p[0] == 'n' && p[1] == 'o') {
470 p += 2;
471 if (p[0] == '-')
472 p++;
473 flag = WARNING_FORCE_OFF;
476 for (i = 0; i < n; i++) {
477 if (!strcmp(p,warnings[i].name)) {
478 *warnings[i].flag = flag;
479 return next;
483 // Unknown.
484 return NULL;
487 static char **handle_switch_W(char *arg, char **next)
489 char ** ret = handle_onoff_switch(arg, next, warnings, ARRAY_SIZE(warnings));
490 if (ret)
491 return ret;
493 // Unknown.
494 return next;
497 static struct warning debugs[] = {
498 { "entry", &dbg_entry},
499 { "dead", &dbg_dead},
503 static char **handle_switch_v(char *arg, char **next)
505 char ** ret = handle_onoff_switch(arg, next, debugs, ARRAY_SIZE(debugs));
506 if (ret)
507 return ret;
509 // Unknown.
510 do {
511 verbose++;
512 } while (*++arg == 'v');
513 return next;
517 static void handle_onoff_switch_finalize(const struct warning warnings[], int n)
519 unsigned i;
521 for (i = 0; i < n; i++) {
522 if (*warnings[i].flag == WARNING_FORCE_OFF)
523 *warnings[i].flag = WARNING_OFF;
527 static void handle_switch_W_finalize(void)
529 handle_onoff_switch_finalize(warnings, ARRAY_SIZE(warnings));
531 /* default Wdeclarationafterstatement based on the C dialect */
532 if (-1 == Wdeclarationafterstatement)
534 switch (standard)
536 case STANDARD_C89:
537 case STANDARD_C94:
538 Wdeclarationafterstatement = 1;
539 break;
541 case STANDARD_C99:
542 case STANDARD_GNU89:
543 case STANDARD_GNU99:
544 Wdeclarationafterstatement = 0;
545 break;
547 default:
548 assert (0);
554 static void handle_switch_v_finalize(void)
556 handle_onoff_switch_finalize(debugs, ARRAY_SIZE(debugs));
559 static char **handle_switch_U(char *arg, char **next)
561 const char *name = arg + 1;
562 add_pre_buffer ("#undef %s\n", name);
563 return next;
566 static char **handle_switch_O(char *arg, char **next)
568 int level = 1;
569 if (arg[1] >= '0' && arg[1] <= '9')
570 level = arg[1] - '0';
571 optimize = level;
572 optimize_size = arg[1] == 's';
573 return next;
576 static char **handle_switch_ftabstop(char *arg, char **next)
578 char *end;
579 unsigned long val;
581 if (*arg == '\0')
582 die("error: missing argument to \"-ftabstop=\"");
584 /* we silently ignore silly values */
585 val = strtoul(arg, &end, 10);
586 if (*end == '\0' && 1 <= val && val <= 100)
587 tabstop = val;
589 return next;
592 static char **handle_switch_f(char *arg, char **next)
594 arg++;
596 if (!strncmp(arg, "tabstop=", 8))
597 return handle_switch_ftabstop(arg+8, next);
599 /* handle switches w/ arguments above, boolean and only boolean below */
601 if (!strncmp(arg, "no-", 3)) {
602 arg += 3;
604 /* handle switch here.. */
605 return next;
608 static char **handle_switch_G(char *arg, char **next)
610 if (!strcmp (arg, "G") && *next)
611 return next + 1; // "-G 0"
612 else
613 return next; // "-G0" or (bogus) terminal "-G"
616 static char **handle_switch_a(char *arg, char **next)
618 if (!strcmp (arg, "ansi"))
619 standard = STANDARD_C89;
621 return next;
624 static char **handle_switch_s(char *arg, char **next)
626 if (!strncmp (arg, "std=", 4))
628 arg += 4;
630 if (!strcmp (arg, "c89") ||
631 !strcmp (arg, "iso9899:1990"))
632 standard = STANDARD_C89;
634 else if (!strcmp (arg, "iso9899:199409"))
635 standard = STANDARD_C94;
637 else if (!strcmp (arg, "c99") ||
638 !strcmp (arg, "c9x") ||
639 !strcmp (arg, "iso9899:1999") ||
640 !strcmp (arg, "iso9899:199x"))
641 standard = STANDARD_C99;
643 else if (!strcmp (arg, "gnu89"))
644 standard = STANDARD_GNU89;
646 else if (!strcmp (arg, "gnu99") || !strcmp (arg, "gnu9x"))
647 standard = STANDARD_GNU99;
649 else
650 die ("Unsupported C dialect");
653 return next;
656 static char **handle_nostdinc(char *arg, char **next)
658 add_pre_buffer("#nostdinc\n");
659 return next;
662 static char **handle_base_dir(char *arg, char **next)
664 gcc_base_dir = *++next;
665 if (!gcc_base_dir)
666 die("missing argument for -gcc-base-dir option");
667 return next;
670 static char **handle_no_lineno(char *arg, char **next)
672 no_lineno = 1;
673 return next;
676 static char **handle_version(char *arg, char **next)
678 printf("%s\n", SPARSE_VERSION);
679 exit(0);
682 struct switches {
683 const char *name;
684 char **(*fn)(char *, char **);
687 static char **handle_long_options(char *arg, char **next)
689 static struct switches cmd[] = {
690 { "version", handle_version },
691 { NULL, NULL }
693 struct switches *s = cmd;
695 while (s->name) {
696 if (!strcmp(s->name, arg))
697 return s->fn(arg, next);
698 s++;
700 return next;
704 static char **handle_switch(char *arg, char **next)
706 static struct switches cmd[] = {
707 { "nostdinc", handle_nostdinc },
708 { "gcc-base-dir", handle_base_dir},
709 { "no-lineno", handle_no_lineno},
710 { NULL, NULL }
712 struct switches *s;
714 switch (*arg) {
715 case 'D': return handle_switch_D(arg, next);
716 case 'E': return handle_switch_E(arg, next);
717 case 'I': return handle_switch_I(arg, next);
718 case 'i': return handle_switch_i(arg, next);
719 case 'M': return handle_switch_M(arg, next);
720 case 'm': return handle_switch_m(arg, next);
721 case 'o': return handle_switch_o(arg, next);
722 case 'U': return handle_switch_U(arg, next);
723 case 'v': return handle_switch_v(arg, next);
724 case 'W': return handle_switch_W(arg, next);
725 case 'O': return handle_switch_O(arg, next);
726 case 'f': return handle_switch_f(arg, next);
727 case 'G': return handle_switch_G(arg, next);
728 case 'a': return handle_switch_a(arg, next);
729 case 's': return handle_switch_s(arg, next);
730 case '-': return handle_long_options(arg + 1, next);
731 default:
732 break;
735 s = cmd;
736 while (s->name) {
737 if (!strcmp(s->name, arg))
738 return s->fn(arg, next);
739 s++;
743 * Ignore unknown command line options:
744 * they're probably gcc switches
746 return next;
749 void declare_builtin_functions(void)
751 /* Gaah. gcc knows tons of builtin <string.h> functions */
752 add_pre_buffer("extern void *__builtin_memcpy(void *, const void *, __SIZE_TYPE__);\n");
753 add_pre_buffer("extern void *__builtin_mempcpy(void *, const void *, __SIZE_TYPE__);\n");
754 add_pre_buffer("extern void *__builtin_memset(void *, int, __SIZE_TYPE__);\n");
755 add_pre_buffer("extern int __builtin_memcmp(const void *, const void *, __SIZE_TYPE__);\n");
756 add_pre_buffer("extern char *__builtin_strcat(char *, const char *);\n");
757 add_pre_buffer("extern char *__builtin_strncat(char *, const char *, __SIZE_TYPE__);\n");
758 add_pre_buffer("extern int __builtin_strcmp(const char *, const char *);\n");
759 add_pre_buffer("extern char *__builtin_strchr(const char *, int);\n");
760 add_pre_buffer("extern char *__builtin_strcpy(char *, const char *);\n");
761 add_pre_buffer("extern char *__builtin_strncpy(char *, const char *, __SIZE_TYPE__);\n");
762 add_pre_buffer("extern __SIZE_TYPE__ __builtin_strspn(const char *, const char *);\n");
763 add_pre_buffer("extern __SIZE_TYPE__ __builtin_strcspn(const char *, const char *);\n");
764 add_pre_buffer("extern char * __builtin_strpbrk(const char *, const char *);\n");
765 add_pre_buffer("extern char* __builtin_stpcpy(const char *, const char*);\n");
766 add_pre_buffer("extern __SIZE_TYPE__ __builtin_strlen(const char *);\n");
768 /* And bitwise operations.. */
769 add_pre_buffer("extern int __builtin_clz(int);\n");
770 add_pre_buffer("extern int __builtin_clzl(long);\n");
771 add_pre_buffer("extern int __builtin_clzll(long long);\n");
772 add_pre_buffer("extern int __builtin_ctz(int);\n");
773 add_pre_buffer("extern int __builtin_ctzl(long);\n");
774 add_pre_buffer("extern int __builtin_ctzll(long long);\n");
775 add_pre_buffer("extern int __builtin_ffs(int);\n");
776 add_pre_buffer("extern int __builtin_ffsl(long);\n");
777 add_pre_buffer("extern int __builtin_ffsll(long long);\n");
778 add_pre_buffer("extern int __builtin_popcount(unsigned int);\n");
779 add_pre_buffer("extern int __builtin_popcountl(unsigned long);\n");
780 add_pre_buffer("extern int __builtin_popcountll(unsigned long long);\n");
782 /* And byte swaps.. */
783 add_pre_buffer("extern unsigned short __builtin_bswap16(unsigned short);\n");
784 add_pre_buffer("extern unsigned int __builtin_bswap32(unsigned int);\n");
785 add_pre_buffer("extern unsigned long long __builtin_bswap64(unsigned long long);\n");
787 /* And atomic memory access functions.. */
788 add_pre_buffer("extern int __sync_fetch_and_add(void *, ...);\n");
789 add_pre_buffer("extern int __sync_fetch_and_sub(void *, ...);\n");
790 add_pre_buffer("extern int __sync_fetch_and_or(void *, ...);\n");
791 add_pre_buffer("extern int __sync_fetch_and_and(void *, ...);\n");
792 add_pre_buffer("extern int __sync_fetch_and_xor(void *, ...);\n");
793 add_pre_buffer("extern int __sync_fetch_and_nand(void *, ...);\n");
794 add_pre_buffer("extern int __sync_add_and_fetch(void *, ...);\n");
795 add_pre_buffer("extern int __sync_sub_and_fetch(void *, ...);\n");
796 add_pre_buffer("extern int __sync_or_and_fetch(void *, ...);\n");
797 add_pre_buffer("extern int __sync_and_and_fetch(void *, ...);\n");
798 add_pre_buffer("extern int __sync_xor_and_fetch(void *, ...);\n");
799 add_pre_buffer("extern int __sync_nand_and_fetch(void *, ...);\n");
800 add_pre_buffer("extern int __sync_bool_compare_and_swap(void *, ...);\n");
801 add_pre_buffer("extern int __sync_val_compare_and_swap(void *, ...);\n");
802 add_pre_buffer("extern void __sync_synchronize();\n");
803 add_pre_buffer("extern int __sync_lock_test_and_set(void *, ...);\n");
804 add_pre_buffer("extern void __sync_lock_release(void *, ...);\n");
806 /* And some random ones.. */
807 add_pre_buffer("extern void *__builtin_return_address(unsigned int);\n");
808 add_pre_buffer("extern void *__builtin_extract_return_addr(void *);\n");
809 add_pre_buffer("extern void *__builtin_frame_address(unsigned int);\n");
810 add_pre_buffer("extern void __builtin_trap(void);\n");
811 add_pre_buffer("extern void *__builtin_alloca(__SIZE_TYPE__);\n");
812 add_pre_buffer("extern void __builtin_prefetch (const void *, ...);\n");
813 add_pre_buffer("extern long __builtin_alpha_extbl(long, long);\n");
814 add_pre_buffer("extern long __builtin_alpha_extwl(long, long);\n");
815 add_pre_buffer("extern long __builtin_alpha_insbl(long, long);\n");
816 add_pre_buffer("extern long __builtin_alpha_inswl(long, long);\n");
817 add_pre_buffer("extern long __builtin_alpha_insql(long, long);\n");
818 add_pre_buffer("extern long __builtin_alpha_inslh(long, long);\n");
819 add_pre_buffer("extern long __builtin_alpha_cmpbge(long, long);\n");
820 add_pre_buffer("extern long __builtin_labs(long);\n");
821 add_pre_buffer("extern double __builtin_fabs(double);\n");
822 add_pre_buffer("extern __SIZE_TYPE__ __builtin_va_arg_pack_len(void);\n");
824 /* Add Blackfin-specific stuff */
825 add_pre_buffer(
826 "#ifdef __bfin__\n"
827 "extern void __builtin_bfin_csync(void);\n"
828 "extern void __builtin_bfin_ssync(void);\n"
829 "extern int __builtin_bfin_norm_fr1x32(int);\n"
830 "#endif\n"
833 /* And some floating point stuff.. */
834 add_pre_buffer("extern int __builtin_isgreater(float, float);\n");
835 add_pre_buffer("extern int __builtin_isgreaterequal(float, float);\n");
836 add_pre_buffer("extern int __builtin_isless(float, float);\n");
837 add_pre_buffer("extern int __builtin_islessequal(float, float);\n");
838 add_pre_buffer("extern int __builtin_islessgreater(float, float);\n");
839 add_pre_buffer("extern int __builtin_isunordered(float, float);\n");
841 /* And some __FORTIFY_SOURCE ones.. */
842 add_pre_buffer ("extern __SIZE_TYPE__ __builtin_object_size(void *, int);\n");
843 add_pre_buffer ("extern void * __builtin___memcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
844 add_pre_buffer ("extern void * __builtin___memmove_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
845 add_pre_buffer ("extern void * __builtin___mempcpy_chk(void *, const void *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
846 add_pre_buffer ("extern void * __builtin___memset_chk(void *, int, __SIZE_TYPE__, __SIZE_TYPE__);\n");
847 add_pre_buffer ("extern int __builtin___sprintf_chk(char *, int, __SIZE_TYPE__, const char *, ...);\n");
848 add_pre_buffer ("extern int __builtin___snprintf_chk(char *, __SIZE_TYPE__, int , __SIZE_TYPE__, const char *, ...);\n");
849 add_pre_buffer ("extern char * __builtin___stpcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
850 add_pre_buffer ("extern char * __builtin___strcat_chk(char *, const char *, __SIZE_TYPE__);\n");
851 add_pre_buffer ("extern char * __builtin___strcpy_chk(char *, const char *, __SIZE_TYPE__);\n");
852 add_pre_buffer ("extern char * __builtin___strncat_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
853 add_pre_buffer ("extern char * __builtin___strncpy_chk(char *, const char *, __SIZE_TYPE__, __SIZE_TYPE__);\n");
854 add_pre_buffer ("extern int __builtin___vsprintf_chk(char *, int, __SIZE_TYPE__, const char *, __builtin_va_list);\n");
855 add_pre_buffer ("extern int __builtin___vsnprintf_chk(char *, __SIZE_TYPE__, int, __SIZE_TYPE__, const char *, __builtin_va_list ap);\n");
856 add_pre_buffer ("extern void __builtin_unreachable(void);\n");
859 void create_builtin_stream(void)
861 add_pre_buffer("#weak_define __GNUC__ %d\n", gcc_major);
862 add_pre_buffer("#weak_define __GNUC_MINOR__ %d\n", gcc_minor);
863 add_pre_buffer("#weak_define __GNUC_PATCHLEVEL__ %d\n", gcc_patchlevel);
865 /* We add compiler headers path here because we have to parse
866 * the arguments to get it, falling back to default. */
867 add_pre_buffer("#add_system \"%s/include\"\n", gcc_base_dir);
868 add_pre_buffer("#add_system \"%s/include-fixed\"\n", gcc_base_dir);
870 add_pre_buffer("#define __extension__\n");
871 add_pre_buffer("#define __pragma__\n");
873 // gcc defines __SIZE_TYPE__ to be size_t. For linux/i86 and
874 // solaris/sparc that is really "unsigned int" and for linux/x86_64
875 // it is "long unsigned int". In either case we can probably
876 // get away with this. We need the #weak_define as cgcc will define
877 // the right __SIZE_TYPE__.
878 if (size_t_ctype == &ulong_ctype)
879 add_pre_buffer("#weak_define __SIZE_TYPE__ long unsigned int\n");
880 else
881 add_pre_buffer("#weak_define __SIZE_TYPE__ unsigned int\n");
882 add_pre_buffer("#weak_define __STDC__ 1\n");
884 switch (standard)
886 case STANDARD_C89:
887 add_pre_buffer("#weak_define __STRICT_ANSI__\n");
888 break;
890 case STANDARD_C94:
891 add_pre_buffer("#weak_define __STDC_VERSION__ 199409L\n");
892 add_pre_buffer("#weak_define __STRICT_ANSI__\n");
893 break;
895 case STANDARD_C99:
896 add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
897 add_pre_buffer("#weak_define __STRICT_ANSI__\n");
898 break;
900 case STANDARD_GNU89:
901 break;
903 case STANDARD_GNU99:
904 add_pre_buffer("#weak_define __STDC_VERSION__ 199901L\n");
905 break;
907 default:
908 assert (0);
911 add_pre_buffer("#define __builtin_stdarg_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
912 add_pre_buffer("#define __builtin_va_start(a,b) ((a) = (__builtin_va_list)(&(b)))\n");
913 add_pre_buffer("#define __builtin_ms_va_start(a,b) ((a) = (__builtin_ms_va_list)(&(b)))\n");
914 add_pre_buffer("#define __builtin_va_arg(arg,type) ({ type __va_arg_ret = *(type *)(arg); arg += sizeof(type); __va_arg_ret; })\n");
915 add_pre_buffer("#define __builtin_va_alist (*(void *)0)\n");
916 add_pre_buffer("#define __builtin_va_arg_incr(x) ((x) + 1)\n");
917 add_pre_buffer("#define __builtin_va_copy(dest, src) ({ dest = src; (void)0; })\n");
918 add_pre_buffer("#define __builtin_va_end(arg)\n");
919 add_pre_buffer("#define __builtin_ms_va_end(arg)\n");
920 add_pre_buffer("#define __builtin_va_arg_pack()\n");
922 /* FIXME! We need to do these as special magic macros at expansion time! */
923 add_pre_buffer("#define __BASE_FILE__ \"base_file.c\"\n");
925 if (optimize)
926 add_pre_buffer("#define __OPTIMIZE__ 1\n");
927 if (optimize_size)
928 add_pre_buffer("#define __OPTIMIZE_SIZE__ 1\n");
930 /* GCC defines these for limits.h */
931 add_pre_buffer("#weak_define __SHRT_MAX__ " STRINGIFY(__SHRT_MAX__) "\n");
932 add_pre_buffer("#weak_define __SCHAR_MAX__ " STRINGIFY(__SCHAR_MAX__) "\n");
933 add_pre_buffer("#weak_define __INT_MAX__ " STRINGIFY(__INT_MAX__) "\n");
934 add_pre_buffer("#weak_define __LONG_MAX__ " STRINGIFY(__LONG_MAX__) "\n");
935 add_pre_buffer("#weak_define __LONG_LONG_MAX__ " STRINGIFY(__LONG_LONG_MAX__) "\n");
936 add_pre_buffer("#weak_define __WCHAR_MAX__ " STRINGIFY(__WCHAR_MAX__) "\n");
937 add_pre_buffer("#weak_define __SIZEOF_POINTER__ " STRINGIFY(__SIZEOF_POINTER__) "\n");
938 add_pre_buffer("#weak_define __CHAR_BIT__ " STRINGIFY(__CHAR_BIT__) "\n");
941 static struct symbol_list *sparse_tokenstream(struct token *token)
943 // Preprocess the stream
944 token = preprocess(token);
946 if (preprocess_only) {
947 while (!eof_token(token)) {
948 int prec = 1;
949 struct token *next = token->next;
950 const char *separator = "";
951 if (next->pos.whitespace)
952 separator = " ";
953 if (next->pos.newline) {
954 separator = "\n\t\t\t\t\t";
955 prec = next->pos.pos;
956 if (prec > 4)
957 prec = 4;
959 printf("%s%.*s", show_token(token), prec, separator);
960 token = next;
962 putchar('\n');
964 return NULL;
967 // Parse the resulting C code
968 while (!eof_token(token))
969 token = external_declaration(token, &translation_unit_used_list);
970 return translation_unit_used_list;
973 static struct symbol_list *sparse_file(const char *filename)
975 int fd;
976 struct token *token;
978 if (strcmp (filename, "-") == 0) {
979 fd = 0;
980 } else {
981 fd = open(filename, O_RDONLY);
982 if (fd < 0)
983 die("No such file: %s", filename);
986 // Tokenize the input stream
987 token = tokenize(filename, fd, NULL, includepath);
988 store_all_tokens(token);
989 close(fd);
991 return sparse_tokenstream(token);
995 * This handles the "-include" directive etc: we're in global
996 * scope, and all types/macros etc will affect all the following
997 * files.
999 * NOTE NOTE NOTE! "#undef" of anything in this stage will
1000 * affect all subsequent files too, i.e. we can have non-local
1001 * behaviour between files!
1003 static struct symbol_list *sparse_initial(void)
1005 int i;
1007 // Prepend any "include" file to the stream.
1008 // We're in global scope, it will affect all files!
1009 for (i = 0; i < cmdline_include_nr; i++)
1010 add_pre_buffer("#argv_include \"%s\"\n", cmdline_include[i]);
1012 return sparse_tokenstream(pre_buffer_begin);
1015 struct symbol_list *sparse_initialize(int argc, char **argv, struct string_list **filelist)
1017 char **args;
1018 struct symbol_list *list;
1020 // Initialize symbol stream first, so that we can add defines etc
1021 init_symbols();
1023 args = argv;
1024 for (;;) {
1025 char *arg = *++args;
1026 if (!arg)
1027 break;
1029 if (arg[0] == '-' && arg[1]) {
1030 args = handle_switch(arg+1, args);
1031 continue;
1033 add_ptr_list_notag(filelist, arg);
1035 handle_switch_W_finalize();
1036 handle_switch_v_finalize();
1038 handle_arch_finalize();
1040 list = NULL;
1041 if (!ptr_list_empty(filelist)) {
1042 // Initialize type system
1043 init_ctype();
1045 create_builtin_stream();
1046 add_pre_buffer("#define __CHECKER__ 1\n");
1047 if (!preprocess_only)
1048 declare_builtin_functions();
1050 list = sparse_initial();
1053 * Protect the initial token allocations, since
1054 * they need to survive all the others
1056 protect_token_alloc();
1058 return list;
1061 struct symbol_list * sparse_keep_tokens(char *filename)
1063 struct symbol_list *res;
1065 /* Clear previous symbol list */
1066 translation_unit_used_list = NULL;
1068 new_file_scope();
1069 res = sparse_file(filename);
1071 /* And return it */
1072 return res;
1076 struct symbol_list * __sparse(char *filename)
1078 struct symbol_list *res;
1080 res = sparse_keep_tokens(filename);
1082 /* Drop the tokens for this file after parsing */
1083 clear_token_alloc();
1085 /* And return it */
1086 return res;
1089 struct symbol_list * sparse(char *filename)
1091 struct symbol_list *res = __sparse(filename);
1093 /* Evaluate the complete symbol list */
1094 evaluate_symbol_list(res);
1096 return res;