2 * File stabs.c - read stabs information from the modules
4 * Copyright (C) 1996, Eric Youngdale.
5 * 1999-2005, Eric Pouech
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 * Maintenance Information
23 * -----------------------
25 * For documentation on the stabs format see for example
26 * The "stabs" debug format
27 * by Julia Menapace, Jim Kingdon, David Mackenzie
29 * available (hopefully) from http://sources.redhat.com/gdb/onlinedocs
33 #include "wine/port.h"
35 #include <sys/types.h>
37 #ifdef HAVE_SYS_STAT_H
38 # include <sys/stat.h>
40 #ifdef HAVE_SYS_MMAN_H
51 #define PATH_MAX MAX_PATH
56 #ifdef HAVE_MACH_O_NLIST_H
57 # include <mach-o/nlist.h>
64 #include "dbghelp_private.h"
66 #include "wine/debug.h"
68 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp_stabs);
70 /* Masks for n_type field */
81 /* Values for (n_type & N_TYPE) */
114 unsigned char n_type;
120 static void stab_strcpy(char* dest, int sz, const char* source)
124 * A strcpy routine that stops when we hit the ':' character.
125 * Faster than copying the whole thing, and then nuking the
127 * Takes also care of (valid) a::b constructs
129 while (*source != '\0')
131 if (source[0] != ':' && sz-- > 0) *ptr++ = *source++;
132 else if (source[1] == ':' && (sz -= 2) > 0)
140 /* GCC emits, in some cases, a .<digit>+ suffix.
141 * This is used for static variable inside functions, so
142 * that we can have several such variables with same name in
143 * the same compilation unit
144 * We simply ignore that suffix when present (we also get rid
145 * of it in ELF symtab parsing)
147 if (ptr >= dest && isdigit(*ptr))
149 while (ptr > dest && isdigit(*ptr)) ptr--;
150 if (*ptr == '.') *ptr = '\0';
159 struct symt** vector;
163 #define MAX_INCLUDES 5120
165 static include_def* include_defs = NULL;
166 static int num_include_def = 0;
167 static int num_alloc_include_def = 0;
168 static int cu_include_stack[MAX_INCLUDES];
169 static int cu_include_stk_idx = 0;
170 static struct symt** cu_vector = NULL;
171 static int cu_nrofentries = 0;
172 static struct symt_basic* stabs_basic[36];
174 static int stabs_new_include(const char* file, unsigned long val)
176 if (num_include_def == num_alloc_include_def)
180 num_alloc_include_def = 256;
181 include_defs = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
182 sizeof(include_defs[0]) * num_alloc_include_def);
186 num_alloc_include_def *= 2;
187 include_defs = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, include_defs,
188 sizeof(include_defs[0]) * num_alloc_include_def);
191 include_defs[num_include_def].name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(file) + 1), file);
192 include_defs[num_include_def].value = val;
193 include_defs[num_include_def].vector = NULL;
194 include_defs[num_include_def].nrofentries = 0;
196 return num_include_def++;
199 static int stabs_find_include(const char* file, unsigned long val)
203 for (i = 0; i < num_include_def; i++)
205 if (val == include_defs[i].value &&
206 strcmp(file, include_defs[i].name) == 0)
212 static int stabs_add_include(int idx)
214 if (idx < 0) return -1;
215 cu_include_stk_idx++;
217 /* if this happens, just bump MAX_INCLUDES */
218 /* we could also handle this as another dynarray */
219 assert(cu_include_stk_idx < MAX_INCLUDES);
220 cu_include_stack[cu_include_stk_idx] = idx;
221 return cu_include_stk_idx;
224 static void stabs_reset_includes(void)
227 * The struct symt:s that we would need to use are reset when
228 * we start a new file. (at least the ones in filenr == 0)
230 cu_include_stk_idx = 0;/* keep 0 as index for the .c file itself */
231 memset(cu_vector, 0, sizeof(cu_vector[0]) * cu_nrofentries);
234 static void stabs_free_includes(void)
238 stabs_reset_includes();
239 for (i = 0; i < num_include_def; i++)
241 HeapFree(GetProcessHeap(), 0, include_defs[i].name);
242 HeapFree(GetProcessHeap(), 0, include_defs[i].vector);
244 HeapFree(GetProcessHeap(), 0, include_defs);
247 num_alloc_include_def = 0;
248 HeapFree(GetProcessHeap(), 0, cu_vector);
253 static struct symt** stabs_find_ref(long filenr, long subnr)
257 /* FIXME: I could perhaps create a dummy include_def for each compilation
258 * unit which would allow not to handle those two cases separately
262 if (cu_nrofentries <= subnr)
264 cu_nrofentries = max( cu_nrofentries * 2, subnr + 1 );
266 cu_vector = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
267 sizeof(cu_vector[0]) * cu_nrofentries);
269 cu_vector = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
270 cu_vector, sizeof(cu_vector[0]) * cu_nrofentries);
272 ret = &cu_vector[subnr];
278 assert(filenr <= cu_include_stk_idx);
279 idef = &include_defs[cu_include_stack[filenr]];
281 if (idef->nrofentries <= subnr)
283 idef->nrofentries = max( idef->nrofentries * 2, subnr + 1 );
285 idef->vector = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
286 sizeof(idef->vector[0]) * idef->nrofentries);
288 idef->vector = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
289 idef->vector, sizeof(idef->vector[0]) * idef->nrofentries);
291 ret = &idef->vector[subnr];
293 TRACE("(%ld,%ld) => %p (%p)\n", filenr, subnr, ret, *ret);
297 static struct symt** stabs_read_type_enum(const char** x)
307 filenr = strtol(iter, &end, 10); /* <int> */
308 iter = ++end; /* ',' */
309 subnr = strtol(iter, &end, 10); /* <int> */
310 iter = ++end; /* ')' */
315 subnr = strtol(iter, &end, 10); /* <int> */
319 return stabs_find_ref(filenr, subnr);
323 struct ParseTypedefData
328 struct module* module;
340 static void stabs_pts_push(struct ParseTypedefData* ptd, unsigned line)
342 assert(ptd->err_idx < sizeof(ptd->errors) / sizeof(ptd->errors[0]));
343 ptd->errors[ptd->err_idx].line = line;
344 ptd->errors[ptd->err_idx].ptr = ptd->ptr;
347 #define PTS_ABORTIF(ptd, t) do { if (t) { stabs_pts_push((ptd), __LINE__); return -1;} } while (0)
349 #define PTS_ABORTIF(ptd, t) do { if (t) return -1; } while (0)
352 static int stabs_get_basic(struct ParseTypedefData* ptd, unsigned basic, struct symt** symt)
354 PTS_ABORTIF(ptd, basic >= sizeof(stabs_basic) / sizeof(stabs_basic[0]));
356 if (!stabs_basic[basic])
360 case 1: stabs_basic[basic] = symt_new_basic(ptd->module, btInt, "int", 4); break;
361 case 2: stabs_basic[basic] = symt_new_basic(ptd->module, btChar, "char", 1); break;
362 case 3: stabs_basic[basic] = symt_new_basic(ptd->module, btInt, "short int", 2); break;
363 case 4: stabs_basic[basic] = symt_new_basic(ptd->module, btInt, "long int", 4); break;
364 case 5: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt, "unsigned char", 1); break;
365 case 6: stabs_basic[basic] = symt_new_basic(ptd->module, btInt, "signed char", 1); break;
366 case 7: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt, "unsigned short int", 2); break;
367 case 8: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt, "unsigned int", 4); break;
368 case 9: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt, "unsigned", 2); break;
369 case 10: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt, "unsigned long int", 2); break;
370 case 11: stabs_basic[basic] = symt_new_basic(ptd->module, btVoid, "void", 0); break;
371 case 12: stabs_basic[basic] = symt_new_basic(ptd->module, btFloat, "float", 4); break;
372 case 13: stabs_basic[basic] = symt_new_basic(ptd->module, btFloat, "double", 8); break;
373 case 14: stabs_basic[basic] = symt_new_basic(ptd->module, btFloat, "long double", 12); break;
374 case 15: stabs_basic[basic] = symt_new_basic(ptd->module, btInt, "integer", 4); break;
375 case 16: stabs_basic[basic] = symt_new_basic(ptd->module, btBool, "bool", 1); break;
376 /* case 17: short real */
378 case 25: stabs_basic[basic] = symt_new_basic(ptd->module, btComplex, "float complex", 8); break;
379 case 26: stabs_basic[basic] = symt_new_basic(ptd->module, btComplex, "double complex", 16); break;
380 case 30: stabs_basic[basic] = symt_new_basic(ptd->module, btWChar, "wchar_t", 2); break;
381 case 31: stabs_basic[basic] = symt_new_basic(ptd->module, btInt, "long long int", 8); break;
382 case 32: stabs_basic[basic] = symt_new_basic(ptd->module, btUInt, "long long unsigned", 8); break;
383 /* starting at 35 are wine extensions (especially for R implementation) */
384 case 35: stabs_basic[basic] = symt_new_basic(ptd->module, btComplex, "long double complex", 24); break;
385 default: PTS_ABORTIF(ptd, 1);
388 *symt = &stabs_basic[basic]->symt;
392 static int stabs_pts_read_type_def(struct ParseTypedefData* ptd,
393 const char* typename, struct symt** dt);
395 static int stabs_pts_read_id(struct ParseTypedefData* ptd)
397 const char* first = ptd->ptr;
398 unsigned int template = 0;
401 while ((ch = *ptd->ptr++) != '\0')
408 unsigned int len = ptd->ptr - first - 1;
409 PTS_ABORTIF(ptd, len >= sizeof(ptd->buf) - ptd->idx);
410 memcpy(ptd->buf + ptd->idx, first, len);
411 ptd->buf[ptd->idx + len] = '\0';
416 case '<': template++; break;
417 case '>': PTS_ABORTIF(ptd, template == 0); template--; break;
423 static int stabs_pts_read_number(struct ParseTypedefData* ptd, long* v)
427 *v = strtol(ptd->ptr, &last, 10);
428 PTS_ABORTIF(ptd, last == ptd->ptr);
433 static int stabs_pts_read_type_reference(struct ParseTypedefData* ptd,
434 long* filenr, long* subnr)
436 if (*ptd->ptr == '(')
438 /* '(' <int> ',' <int> ')' */
440 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, filenr) == -1);
441 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
442 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, subnr) == -1);
443 PTS_ABORTIF(ptd, *ptd->ptr++ != ')');
448 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, subnr) == -1);
453 struct pts_range_value
459 static int stabs_pts_read_range_value(struct ParseTypedefData* ptd, struct pts_range_value* prv)
466 while (*ptd->ptr == '0') ptd->ptr++;
467 if (*ptd->ptr >= '1' && *ptd->ptr <= '7')
472 PTS_ABORTIF(ptd, ptd->ptr[0] != '1');
475 while (isdigit(*ptd->ptr)) prv->val = (prv->val << 3) + *ptd->ptr++ - '0';
480 while (isdigit(*ptd->ptr)) prv->val = (prv->val << 3) + *ptd->ptr++ - '0';
482 default: PTS_ABORTIF(ptd, 1); break;
484 } else prv->sign = 0;
488 prv->val = strtoull(++ptd->ptr, &last, 10);
494 prv->val = strtoull(ptd->ptr, &last, 10);
501 static int stabs_pts_read_range(struct ParseTypedefData* ptd, const char* typename,
505 struct pts_range_value lo;
506 struct pts_range_value hi;
512 /* type ';' <int> ';' <int> ';' */
513 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref) == -1);
514 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
515 PTS_ABORTIF(ptd, stabs_pts_read_range_value(ptd, &lo) == -1);
516 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
517 PTS_ABORTIF(ptd, stabs_pts_read_range_value(ptd, &hi) == -1);
518 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
520 /* basically, we don't use ref... in some cases, for example, float is declared
521 * as a derived type of int... which won't help us... so we guess the types
522 * from the various formats
524 if (lo.sign == 0 && hi.sign < 0)
529 else if (lo.sign < 0 && hi.sign == 0)
534 else if (lo.sign > 0 && hi.sign == 0)
539 else if (lo.sign < 0 && hi.sign > 0)
542 for (i = 7; i < 64; i += 8)
544 if (lo.val == v && hi.val == v - 1)
552 PTS_ABORTIF(ptd, i >= 64);
554 else if (lo.sign == 0 && hi.sign > 0)
556 if (hi.val == 127) /* specific case for char... */
564 for (i = 8; i <= 64; i += 8)
574 PTS_ABORTIF(ptd, i > 64);
577 else PTS_ABORTIF(ptd, 1);
579 *dt = &symt_new_basic(ptd->module, bt, typename, size)->symt;
583 static inline int stabs_pts_read_method_info(struct ParseTypedefData* ptd)
591 /* get type of return value */
592 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
593 if (*ptd->ptr == ';') ptd->ptr++;
595 /* get types of parameters */
596 if (*ptd->ptr == ':')
598 PTS_ABORTIF(ptd, !(tmp = strchr(ptd->ptr + 1, ';')));
601 PTS_ABORTIF(ptd, !(*ptd->ptr >= '0' && *ptd->ptr <= '9'));
603 PTS_ABORTIF(ptd, !(ptd->ptr[0] >= 'A' && *ptd->ptr <= 'D'));
605 PTS_ABORTIF(ptd, mthd != '.' && mthd != '?' && mthd != '*');
612 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &ofs) == -1);
613 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
614 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
615 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
617 } while (*ptd->ptr != ';');
623 static inline int stabs_pts_read_aggregate(struct ParseTypedefData* ptd,
624 struct symt_udt* sdt)
628 struct symt* dt = NULL;
632 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &sz) == -1);
634 doadd = symt_set_udt_size(ptd->module, sdt, sz);
635 if (*ptd->ptr == '!') /* C++ inheritence */
640 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &num_classes) == -1);
641 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
642 while (--num_classes >= 0)
644 ptd->ptr += 2; /* skip visibility and inheritence */
645 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &ofs) == -1);
646 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
648 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &adt) == -1);
655 strcpy(tmp, "__inherited_class_");
656 strcat(tmp, symt_get_name(adt));
658 /* FIXME: TI_GET_LENGTH will not always work, especially when adt
659 * has just been seen as a forward definition and not the real stuff
661 * As we don't use much the size of members in structs, this may not
662 * be much of a problem
664 symt_get_info(ptd->module, adt, TI_GET_LENGTH, &size);
665 symt_add_udt_element(ptd->module, sdt, tmp, adt, ofs, (DWORD)size * 8);
667 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
671 /* if the structure has already been filled, just redo the parsing
672 * but don't store results into the struct
673 * FIXME: there's a quite ugly memory leak in there...
676 /* Now parse the individual elements of the structure/union. */
677 while (*ptd->ptr != ';')
679 /* agg_name : type ',' <int:offset> ',' <int:size> */
682 if (ptd->ptr[0] == '$' && ptd->ptr[1] == 'v')
686 if (ptd->ptr[2] == 'f')
688 /* C++ virtual method table */
690 stabs_read_type_enum(&ptd->ptr);
691 PTS_ABORTIF(ptd, *ptd->ptr++ != ':');
692 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
693 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
694 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &x) == -1);
695 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
699 else if (ptd->ptr[2] == 'b')
702 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
703 PTS_ABORTIF(ptd, *ptd->ptr++ != ':');
704 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
705 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
706 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &x) == -1);
707 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
713 PTS_ABORTIF(ptd, stabs_pts_read_id(ptd) == -1);
714 /* Ref. TSDF R2.130 Section 7.4. When the field name is a method name
715 * it is followed by two colons rather than one.
717 if (*ptd->ptr == ':')
720 stabs_pts_read_method_info(ptd);
726 /* skip C++ member protection /0 /1 or /2 */
727 if (*ptd->ptr == '/') ptd->ptr += 2;
729 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &adt) == -1);
734 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &ofs) == -1);
735 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
736 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &sz) == -1);
737 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
739 if (doadd) symt_add_udt_element(ptd->module, sdt, ptd->buf + idx, adt, ofs, sz);
744 /* method parameters... terminated by ';' */
745 PTS_ABORTIF(ptd, !(tmp = strchr(ptd->ptr, ';')));
750 PTS_ABORTIF(ptd, TRUE);
754 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
755 if (*ptd->ptr == '~')
758 PTS_ABORTIF(ptd, *ptd->ptr++ != '%');
759 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &dt) == -1);
760 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
765 static inline int stabs_pts_read_enum(struct ParseTypedefData* ptd,
766 struct symt_enum* edt)
771 while (*ptd->ptr != ';')
774 PTS_ABORTIF(ptd, stabs_pts_read_id(ptd) == -1);
775 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &value) == -1);
776 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
777 symt_add_enum_element(ptd->module, edt, ptd->buf + idx, value);
784 static inline int stabs_pts_read_array(struct ParseTypedefData* ptd,
788 struct symt* range_dt;
789 struct symt* base_dt;
791 /* ar<typeinfo_nodef>;<int>;<int>;<typeinfo> */
793 PTS_ABORTIF(ptd, *ptd->ptr++ != 'r');
795 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &range_dt) == -1);
796 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
797 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &lo) == -1);
798 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
799 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &hi) == -1);
800 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
802 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &base_dt) == -1);
804 *adt = &symt_new_array(ptd->module, lo, hi, base_dt, range_dt)->symt;
808 static int stabs_pts_read_type_def(struct ParseTypedefData* ptd, const char* typename,
809 struct symt** ret_dt)
813 struct symt* new_dt = NULL; /* newly created data type */
814 struct symt* ref_dt; /* referenced data type (pointer...) */
815 long filenr1, subnr1, tmp;
817 /* things are a bit complicated because of the way the typedefs are stored inside
818 * the file, because addresses can change when realloc is done, so we must call
819 * over and over stabs_find_ref() to keep the correct values around
821 PTS_ABORTIF(ptd, stabs_pts_read_type_reference(ptd, &filenr1, &subnr1) == -1);
823 while (*ptd->ptr == '=')
826 PTS_ABORTIF(ptd, new_dt != NULL);
828 /* first handle attribute if any */
832 if (*++ptd->ptr == 's')
835 if (stabs_pts_read_number(ptd, &sz) == -1)
837 ERR("Not an attribute... NIY\n");
841 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
845 /* then the real definitions */
850 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
851 new_dt = &symt_new_pointer(ptd->module, ref_dt, sizeof(void*))->symt;
853 case 'k': /* 'const' modifier */
854 case 'B': /* 'volatile' modifier */
855 /* just kinda ignore the modifier, I guess -gmt */
856 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, typename, &new_dt) == -1);
860 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, typename, &new_dt) == -1);
863 PTS_ABORTIF(ptd, stabs_pts_read_array(ptd, &new_dt) == -1);
866 PTS_ABORTIF(ptd, stabs_pts_read_range(ptd, typename, &new_dt) == -1);
867 assert(!*stabs_find_ref(filenr1, subnr1));
868 *stabs_find_ref(filenr1, subnr1) = new_dt;
871 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
872 new_dt = &symt_new_function_signature(ptd->module, ref_dt, -1)->symt;
875 stabs_get_basic(ptd, 1 /* int */, &ref_dt);
876 new_dt = &symt_new_enum(ptd->module, typename, ref_dt)->symt;
877 PTS_ABORTIF(ptd, stabs_pts_read_enum(ptd, (struct symt_enum*)new_dt) == -1);
882 struct symt_udt* udt;
883 enum UdtKind kind = (ptd->ptr[-1] == 's') ? UdtStruct : UdtUnion;
884 /* udt can have been already defined in a forward definition */
885 udt = (struct symt_udt*)*stabs_find_ref(filenr1, subnr1);
888 udt = symt_new_udt(ptd->module, typename, 0, kind);
889 /* we need to set it here, because a struct can hold a pointer
892 new_dt = *stabs_find_ref(filenr1, subnr1) = &udt->symt;
897 if (udt->symt.tag != SymTagUDT)
899 ERR("Forward declaration (%p/%s) is not an aggregate (%u)\n",
900 udt, symt_get_name(&udt->symt), udt->symt.tag);
903 /* FIXME: we currently don't correctly construct nested C++
904 * classes names. Therefore, we could be here with either:
905 * - typename and udt->hash_elt.name being the same string
906 * (non embedded case)
907 * - typename being foo::bar while udt->hash_elt.name being
909 * So, we twist the comparison to test both occurrences. When
910 * we have proper C++ types in this file, this twist has to be
913 l1 = strlen(udt->hash_elt.name);
914 l2 = strlen(typename);
915 if (l1 > l2 || strcmp(udt->hash_elt.name, typename + l2 - l1))
916 ERR("Forward declaration name mismatch %s <> %s\n",
917 udt->hash_elt.name, typename);
920 PTS_ABORTIF(ptd, stabs_pts_read_aggregate(ptd, udt) == -1);
926 PTS_ABORTIF(ptd, stabs_pts_read_id(ptd) == -1);
930 stabs_get_basic(ptd, 1 /* int */, &ref_dt);
931 new_dt = &symt_new_enum(ptd->module, ptd->buf + idx, ref_dt)->symt;
934 new_dt = &symt_new_udt(ptd->module, ptd->buf + idx, 0, UdtStruct)->symt;
937 new_dt = &symt_new_udt(ptd->module, ptd->buf + idx, 0, UdtUnion)->symt;
946 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &tmp) == -1);
947 PTS_ABORTIF(ptd, stabs_get_basic(ptd, tmp, &new_dt) == -1);
948 PTS_ABORTIF(ptd, *ptd->ptr++ != ';');
952 if (*ptd->ptr == '#')
955 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
956 new_dt = &symt_new_function_signature(ptd->module, ref_dt, -1)->symt;
963 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &cls_dt) == -1);
964 PTS_ABORTIF(ptd, *ptd->ptr++ != ',');
965 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &ref_dt) == -1);
966 new_dt = &symt_new_function_signature(ptd->module, ref_dt, -1)->symt;
967 while (*ptd->ptr == ',')
970 PTS_ABORTIF(ptd, stabs_pts_read_type_def(ptd, NULL, &pmt_dt) == -1);
979 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &type) == -1);
980 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
981 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &len) == -1);
982 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
983 PTS_ABORTIF(ptd, stabs_pts_read_number(ptd, &unk) == -1);
984 PTS_ABORTIF(ptd, *ptd->ptr++ != ';'); /* ';' */
986 switch (type) /* see stabs_get_basic for the details */
988 case 1: basic = 12; break;
989 case 2: basic = 13; break;
990 case 3: basic = 25; break;
991 case 4: basic = 26; break;
992 case 5: basic = 35; break;
993 case 6: basic = 14; break;
994 default: PTS_ABORTIF(ptd, 1);
996 PTS_ABORTIF(ptd, stabs_get_basic(ptd, basic, &new_dt) == -1);
1000 ERR("Unknown type '%c'\n", ptd->ptr[-1]);
1007 /* is it a forward declaration that has been filled ? */
1008 new_dt = *stabs_find_ref(filenr1, subnr1);
1009 /* if not, this should be void (which is defined as a ref to itself, but we
1010 * don't correctly catch it)
1012 if (!new_dt && typename)
1014 new_dt = &symt_new_basic(ptd->module, btVoid, typename, 0)->symt;
1015 PTS_ABORTIF(ptd, strcmp(typename, "void"));
1019 *stabs_find_ref(filenr1, subnr1) = *ret_dt = new_dt;
1021 TRACE("Adding (%ld,%ld) %s\n", filenr1, subnr1, debugstr_a(typename));
1026 static int stabs_parse_typedef(struct module* module, const char* ptr,
1027 const char* typename)
1029 struct ParseTypedefData ptd;
1033 /* check for already existing definition */
1035 TRACE("%s => %s\n", typename, debugstr_a(ptr));
1036 ptd.module = module;
1041 for (ptd.ptr = ptr - 1; ;)
1043 ptd.ptr = strchr(ptd.ptr + 1, ':');
1044 if (ptd.ptr == NULL || *++ptd.ptr != ':') break;
1048 if (*ptd.ptr != '(') ptd.ptr++;
1049 /* most of type definitions take one char, except Tt */
1050 if (*ptd.ptr != '(') ptd.ptr++;
1051 ret = stabs_pts_read_type_def(&ptd, typename, &dt);
1054 if (ret == -1 || *ptd.ptr)
1058 TRACE("Failure on %s\n", debugstr_a(ptr));
1061 for (i = 0; i < ptd.err_idx; i++)
1063 TRACE("[%d]: line %d => %s\n",
1064 i, ptd.errors[i].line, debugstr_a(ptd.errors[i].ptr));
1068 TRACE("[0]: => %s\n", debugstr_a(ptd.ptr));
1071 ERR("Failure on %s at %s\n", debugstr_a(ptr), debugstr_a(ptd.ptr));
1079 static struct symt* stabs_parse_type(const char* stab)
1081 const char* c = stab - 1;
1084 * Look through the stab definition, and figure out what struct symt
1085 * this represents. If we have something we know about, assign the
1087 * According to "The \"stabs\" debug format" (Rev 2.130) the name may be
1088 * a C++ name and contain double colons e.g. foo::bar::baz:t5=*6.
1092 if ((c = strchr(c + 1, ':')) == NULL) return NULL;
1093 } while (*++c == ':');
1096 * The next characters say more about the type (i.e. data, function, etc)
1097 * of symbol. Skip them. (C++ for example may have Tt).
1098 * Actually this is a very weak description; I think Tt is the only
1099 * multiple combination we should see.
1101 while (*c && *c != '(' && !isdigit(*c))
1104 * The next is either an integer or a (integer,integer).
1105 * The stabs_read_type_enum() takes care that stab_types is large enough.
1107 return *stabs_read_type_enum(&c);
1110 enum pending_obj_kind
1116 struct pending_loc_var
1121 struct location loc;
1128 unsigned long offset;
1129 unsigned long load_offset;
1132 struct pending_object
1134 enum pending_obj_kind tag;
1136 struct pending_loc_var var;
1137 struct pending_line line;
1143 struct pending_object* objs;
1148 static inline void pending_make_room(struct pending_list* pending)
1150 if (pending->num == pending->allocated)
1154 pending->allocated = 8;
1155 pending->objs = HeapAlloc(GetProcessHeap(), 0,
1156 pending->allocated * sizeof(pending->objs[0]));
1160 pending->allocated *= 2;
1161 pending->objs = HeapReAlloc(GetProcessHeap(), 0, pending->objs,
1162 pending->allocated * sizeof(pending->objs[0]));
1167 static inline void pending_add_var(struct pending_list* pending, const char* name,
1168 enum DataKind dt, const struct location* loc)
1170 pending_make_room(pending);
1171 pending->objs[pending->num].tag = PENDING_VAR;
1172 stab_strcpy(pending->objs[pending->num].u.var.name,
1173 sizeof(pending->objs[pending->num].u.var.name), name);
1174 pending->objs[pending->num].u.var.type = stabs_parse_type(name);
1175 pending->objs[pending->num].u.var.kind = dt;
1176 pending->objs[pending->num].u.var.loc = *loc;
1180 static inline void pending_add_line(struct pending_list* pending, int source_idx,
1181 int line_num, unsigned long offset,
1182 unsigned long load_offset)
1184 pending_make_room(pending);
1185 pending->objs[pending->num].tag = PENDING_LINE;
1186 pending->objs[pending->num].u.line.source_idx = source_idx;
1187 pending->objs[pending->num].u.line.line_num = line_num;
1188 pending->objs[pending->num].u.line.offset = offset;
1189 pending->objs[pending->num].u.line.load_offset = load_offset;
1193 static void pending_flush(struct pending_list* pending, struct module* module,
1194 struct symt_function* func, struct symt_block* block)
1198 for (i = 0; i < pending->num; i++)
1200 switch (pending->objs[i].tag)
1203 symt_add_func_local(module, func,
1204 pending->objs[i].u.var.kind, &pending->objs[i].u.var.loc,
1205 block, pending->objs[i].u.var.type, pending->objs[i].u.var.name);
1208 if (module->type == DMT_MACHO)
1209 pending->objs[i].u.line.offset -= func->address - pending->objs[i].u.line.load_offset;
1210 symt_add_func_line(module, func, pending->objs[i].u.line.source_idx,
1211 pending->objs[i].u.line.line_num, pending->objs[i].u.line.offset);
1214 ERR("Unknown pending object tag %u\n", (unsigned)pending->objs[i].tag);
1221 /******************************************************************
1222 * stabs_finalize_function
1224 * Ends function creation: mainly:
1225 * - cleans up line number information
1226 * - tries to set up a debug-start tag (FIXME: heuristic to be enhanced)
1227 * - for stabs which have absolute address in them, initializes the size of the
1228 * function (assuming that current function ends where next function starts)
1230 static void stabs_finalize_function(struct module* module, struct symt_function* func,
1234 struct location loc;
1237 symt_normalize_function(module, func);
1238 /* To define the debug-start of the function, we use the second line number.
1239 * Not 100% bullet proof, but better than nothing
1241 if (symt_fill_func_line_info(module, func, func->address, &il) &&
1242 symt_get_func_line_next(module, &il))
1244 loc.kind = loc_absolute;
1245 loc.offset = il.Address - func->address;
1246 symt_add_function_point(module, func, SymTagFuncDebugStart,
1249 if (size) func->size = size;
1252 static inline void stabbuf_append(char **buf, unsigned *buf_size, const char *str)
1254 unsigned str_len, buf_len;
1256 str_len = strlen(str);
1257 buf_len = strlen(*buf);
1259 if(str_len+buf_len >= *buf_size) {
1260 *buf_size += buf_len + str_len;
1261 *buf = HeapReAlloc(GetProcessHeap(), 0, *buf, *buf_size);
1264 strcpy(*buf+buf_len, str);
1267 BOOL stabs_parse(struct module* module, unsigned long load_offset,
1268 const void* pv_stab_ptr, int stablen,
1269 const char* strs, int strtablen,
1270 stabs_def_cb callback, void* user)
1272 struct symt_function* curr_func = NULL;
1273 struct symt_block* block = NULL;
1274 struct symt_compiland* compiland = NULL;
1275 char srcpath[PATH_MAX]; /* path to directory source file is in */
1280 unsigned int stabbufflen;
1281 const struct stab_nlist* stab_ptr = pv_stab_ptr;
1282 const char* strs_end;
1287 int source_idx = -1;
1288 struct pending_list pending_block;
1289 struct pending_list pending_func;
1291 struct location loc;
1294 nstab = stablen / sizeof(struct stab_nlist);
1295 strs_end = strs + strtablen;
1297 memset(srcpath, 0, sizeof(srcpath));
1298 memset(stabs_basic, 0, sizeof(stabs_basic));
1299 memset(&pending_block, 0, sizeof(pending_block));
1300 memset(&pending_func, 0, sizeof(pending_func));
1303 * Allocate a buffer into which we can build stab strings for cases
1304 * where the stab is continued over multiple lines.
1306 stabbufflen = 65536;
1307 stabbuff = HeapAlloc(GetProcessHeap(), 0, stabbufflen);
1311 for (i = 0; i < nstab; i++, stab_ptr++)
1313 ptr = strs + stab_ptr->n_strx;
1314 if ((ptr > strs_end) || (ptr + strlen(ptr) > strs_end))
1316 WARN("Bad stabs string %p\n", ptr);
1319 if (*ptr != '\0' && (ptr[strlen(ptr) - 1] == '\\'))
1322 * Indicates continuation. Append this to the buffer, and go onto the
1323 * next record. Repeat the process until we find a stab without the
1324 * '/' character, as this indicates we have the whole thing.
1326 stabbuf_append(&stabbuff, &stabbufflen, ptr);
1329 else if (stabbuff[0] != '\0')
1331 stabbuf_append(&stabbuff, &stabbufflen, ptr);
1335 if (stab_ptr->n_type & N_STAB)
1336 type = stab_ptr->n_type;
1338 type = (stab_ptr->n_type & N_TYPE);
1340 /* only symbol entries contain a typedef */
1350 if (strchr(ptr, '=') != NULL)
1353 * The stabs aren't in writable memory, so copy it over so we are
1354 * sure we can scribble on it.
1356 if (ptr != stabbuff)
1359 stabbuf_append(&stabbuff, &stabbufflen, ptr);
1362 stab_strcpy(symname, sizeof(symname), ptr);
1363 if (!stabs_parse_typedef(module, ptr, symname))
1365 /* skip this definition */
1376 * These are useless with ELF. They have no value, and you have to
1377 * read the normal symbol table to get the address. Thus we
1378 * ignore them, and when we process the normal symbol table
1379 * we should do the right thing.
1381 * With a.out or mingw, they actually do make some amount of sense.
1383 stab_strcpy(symname, sizeof(symname), ptr);
1384 symt_new_global_variable(module, compiland, symname, TRUE /* FIXME */,
1385 load_offset + stab_ptr->n_value, 0,
1386 stabs_parse_type(ptr));
1390 /* These are static symbols and BSS symbols. */
1391 stab_strcpy(symname, sizeof(symname), ptr);
1392 symt_new_global_variable(module, compiland, symname, TRUE /* FIXME */,
1393 load_offset + stab_ptr->n_value, 0,
1394 stabs_parse_type(ptr));
1399 block = symt_open_func_block(module, curr_func, block,
1400 stab_ptr->n_value, 0);
1401 pending_flush(&pending_block, module, curr_func, block);
1406 block = symt_close_func_block(module, curr_func, block,
1410 /* These are function parameters. */
1411 if (curr_func != NULL)
1413 struct symt* param_type = stabs_parse_type(ptr);
1414 stab_strcpy(symname, sizeof(symname), ptr);
1415 loc.kind = loc_regrel;
1416 loc.reg = 0; /* FIXME */
1417 loc.offset = stab_ptr->n_value;
1418 symt_add_func_local(module, curr_func,
1419 (int)stab_ptr->n_value >= 0 ? DataIsParam : DataIsLocal,
1420 &loc, NULL, param_type, symname);
1421 symt_add_function_signature_parameter(module,
1422 (struct symt_function_signature*)curr_func->type,
1427 /* These are registers (as local variables) */
1428 if (curr_func != NULL)
1430 loc.kind = loc_register;
1433 switch (stab_ptr->n_value)
1435 case 0: loc.reg = CV_REG_EAX; break;
1436 case 1: loc.reg = CV_REG_ECX; break;
1437 case 2: loc.reg = CV_REG_EDX; break;
1438 case 3: loc.reg = CV_REG_EBX; break;
1439 case 4: loc.reg = CV_REG_ESP; break;
1440 case 5: loc.reg = CV_REG_EBP; break;
1441 case 6: loc.reg = CV_REG_ESI; break;
1442 case 7: loc.reg = CV_REG_EDI; break;
1451 case 19: loc.reg = CV_REG_ST0 + stab_ptr->n_value - 12; break;
1459 case 28: loc.reg = CV_REG_XMM0 + stab_ptr->n_value - 21; break;
1467 case 36: loc.reg = CV_REG_MM0 + stab_ptr->n_value - 29; break;
1469 FIXME("Unknown register value (%u)\n", stab_ptr->n_value);
1470 loc.reg = CV_REG_NONE;
1473 stab_strcpy(symname, sizeof(symname), ptr);
1474 if (ptr[strlen(symname) + 1] == 'P')
1476 struct symt* param_type = stabs_parse_type(ptr);
1477 stab_strcpy(symname, sizeof(symname), ptr);
1478 symt_add_func_local(module, curr_func, DataIsParam, &loc,
1479 NULL, param_type, symname);
1480 symt_add_function_signature_parameter(module,
1481 (struct symt_function_signature*)curr_func->type,
1485 pending_add_var(&pending_block, ptr, DataIsLocal, &loc);
1489 /* These are local variables */
1490 loc.kind = loc_regrel;
1491 loc.reg = 0; /* FIXME */
1492 loc.offset = stab_ptr->n_value;
1493 if (curr_func != NULL) pending_add_var(&pending_block, ptr, DataIsLocal, &loc);
1497 * This is a line number. These are always relative to the start
1498 * of the function (N_FUN), and this makes the lookup easier.
1500 assert(source_idx >= 0);
1501 if (curr_func != NULL)
1503 unsigned long offset = stab_ptr->n_value;
1504 if (module->type == DMT_MACHO)
1505 offset -= curr_func->address - load_offset;
1506 symt_add_func_line(module, curr_func, source_idx,
1507 stab_ptr->n_desc, offset);
1509 else pending_add_line(&pending_func, source_idx, stab_ptr->n_desc,
1510 stab_ptr->n_value, load_offset);
1514 * For now, just declare the various functions. Later
1515 * on, we will add the line number information and the
1519 * Copy the string to a temp buffer so we
1520 * can kill everything after the ':'. We do
1521 * it this way because otherwise we end up dirtying
1522 * all of the pages related to the stabs, and that
1523 * sucks up swap space like crazy.
1525 stab_strcpy(symname, sizeof(symname), ptr);
1528 struct symt_function_signature* func_type;
1532 /* First, clean up the previous function we were working on.
1533 * Assume size of the func is the delta between current offset
1534 * and offset of last function
1536 stabs_finalize_function(module, curr_func,
1538 (load_offset + stab_ptr->n_value - curr_func->address) : 0);
1540 func_type = symt_new_function_signature(module,
1541 stabs_parse_type(ptr), -1);
1542 curr_func = symt_new_function(module, compiland, symname,
1543 load_offset + stab_ptr->n_value, 0,
1545 pending_flush(&pending_func, module, curr_func, NULL);
1549 /* some versions of GCC to use a N_FUN "" to mark the end of a function
1550 * and n_value contains the size of the func
1552 stabs_finalize_function(module, curr_func, stab_ptr->n_value);
1558 * This indicates a new source file. Append the records
1559 * together, to build the correct path name.
1561 if (*ptr == '\0') /* end of N_SO file */
1563 /* Nuke old path. */
1565 stabs_finalize_function(module, curr_func, 0);
1569 assert(block == NULL);
1574 int len = strlen(ptr);
1575 if (ptr[len-1] != '/')
1577 stabs_reset_includes();
1578 source_idx = source_new(module, srcpath, ptr);
1579 compiland = symt_new_compiland(module, 0 /* FIXME */, source_idx);
1582 strcpy(srcpath, ptr);
1586 source_idx = source_new(module, srcpath, ptr);
1590 strtabinc = stab_ptr->n_value;
1591 /* I'm not sure this is needed, so trace it before we obsolete it */
1594 FIXME("UNDF: curr_func %s\n", curr_func->hash_elt.name);
1595 stabs_finalize_function(module, curr_func, 0); /* FIXME */
1600 /* Ignore this. We don't care what it points to. */
1603 stabs_add_include(stabs_new_include(ptr, stab_ptr->n_value));
1604 assert(incl_stk < (int)(sizeof(incl) / sizeof(incl[0])) - 1);
1605 incl[++incl_stk] = source_idx;
1606 source_idx = source_new(module, NULL, ptr);
1609 assert(incl_stk >= 0);
1610 source_idx = incl[incl_stk--];
1613 if (stabs_add_include(stabs_find_include(ptr, stab_ptr->n_value)) < 0)
1615 ERR("Excluded header not found (%s,%d)\n", ptr, stab_ptr->n_value);
1616 module_reset_debug_info(module);
1622 /* Always ignore these. GCC doesn't even generate them. */
1627 /* Always ignore these, they seem to be used only on Darwin. */
1633 /* FIXME: Other definition types (N_TEXT, N_DATA, N_BSS, ...)? */
1636 BOOL is_public = (stab_ptr->n_type & N_EXT);
1637 BOOL is_global = is_public;
1640 /* "private extern"; shared among compilation units in a shared
1641 * library, but not accessible from outside the library. */
1642 if (stab_ptr->n_type & N_PEXT)
1649 if (*ptr == '_') ptr++;
1650 stab_strcpy(symname, sizeof(symname), ptr);
1652 callback(module, load_offset, symname, stab_ptr->n_value,
1653 is_public, is_global, stab_ptr->n_other, compiland, user);
1657 ERR("Unknown stab type 0x%02x\n", type);
1661 TRACE("0x%02x %x %s\n",
1662 stab_ptr->n_type, stab_ptr->n_value, debugstr_a(strs + stab_ptr->n_strx));
1664 module->module.SymType = SymDia;
1665 module->module.CVSig = 'S' | ('T' << 8) | ('A' << 16) | ('B' << 24);
1666 /* FIXME: we could have a finer grain here */
1667 module->module.LineNumbers = TRUE;
1668 module->module.GlobalSymbols = TRUE;
1669 module->module.TypeInfo = TRUE;
1670 module->module.SourceIndexed = TRUE;
1671 module->module.Publics = TRUE;
1673 HeapFree(GetProcessHeap(), 0, stabbuff);
1674 stabs_free_includes();
1675 HeapFree(GetProcessHeap(), 0, pending_block.objs);
1676 HeapFree(GetProcessHeap(), 0, pending_func.objs);