1 /* Support routines for decoding "stabs" debugging information format.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* Support routines for reading and decoding debugging information in
24 the "stabs" format. This format is used with many systems that use
25 the a.out object file format, as well as some systems that use
26 COFF or ELF where the stabs data is placed in a special section.
27 Avoid placing any object file format specific code in this file. */
30 #include "gdb_string.h"
32 #include "gdb_obstack.h"
35 #include "expression.h"
38 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
40 #include "aout/aout64.h"
41 #include "gdb-stabs.h"
43 #include "complaints.h"
48 #include "cp-support.h"
52 /* Ask stabsread.h to define the vars it normally declares `extern'. */
55 #include "stabsread.h" /* Our own declarations */
58 extern void _initialize_stabsread (void);
60 /* The routines that read and process a complete stabs for a C struct or
61 C++ class pass lists of data member fields and lists of member function
62 fields in an instance of a field_info structure, as defined below.
63 This is part of some reorganization of low level C++ support and is
64 expected to eventually go away... (FIXME) */
70 struct nextfield *next;
72 /* This is the raw visibility from the stab. It is not checked
73 for being one of the visibilities we recognize, so code which
74 examines this field better be able to deal. */
80 struct next_fnfieldlist
82 struct next_fnfieldlist *next;
83 struct fn_fieldlist fn_fieldlist;
89 read_one_struct_field (struct field_info *, char **, char *,
90 struct type *, struct objfile *);
92 static char *get_substring (char **, int);
94 static struct type *dbx_alloc_type (int[2], struct objfile *);
96 static long read_huge_number (char **, int, int *);
98 static struct type *error_type (char **, struct objfile *);
101 patch_block_stabs (struct pending *, struct pending_stabs *,
104 static void fix_common_block (struct symbol *, int);
106 static int read_type_number (char **, int *);
108 static struct type *read_type (char **, struct objfile *);
110 static struct type *read_range_type (char **, int[2], struct objfile *);
112 static struct type *read_sun_builtin_type (char **, int[2], struct objfile *);
114 static struct type *read_sun_floating_type (char **, int[2],
117 static struct type *read_enum_type (char **, struct type *, struct objfile *);
119 static struct type *rs6000_builtin_type (int);
122 read_member_functions (struct field_info *, char **, struct type *,
126 read_struct_fields (struct field_info *, char **, struct type *,
130 read_baseclasses (struct field_info *, char **, struct type *,
134 read_tilde_fields (struct field_info *, char **, struct type *,
137 static int attach_fn_fields_to_type (struct field_info *, struct type *);
139 static int attach_fields_to_type (struct field_info *, struct type *,
142 static struct type *read_struct_type (char **, struct type *,
146 static struct type *read_array_type (char **, struct type *,
149 static struct field *read_args (char **, int, struct objfile *, int *, int *);
151 static void add_undefined_type (struct type *);
154 read_cpp_abbrev (struct field_info *, char **, struct type *,
156 #if 0 /* OBSOLETE CFront */
157 // OBSOLETE /* new functions added for cfront support */
159 // OBSOLETE static int
160 // OBSOLETE copy_cfront_struct_fields (struct field_info *, struct type *,
161 // OBSOLETE struct objfile *);
163 // OBSOLETE static char *get_cfront_method_physname (char *);
165 // OBSOLETE static int
166 // OBSOLETE read_cfront_baseclasses (struct field_info *, char **,
167 // OBSOLETE struct type *, struct objfile *);
169 // OBSOLETE static int
170 // OBSOLETE read_cfront_static_fields (struct field_info *, char **,
171 // OBSOLETE struct type *, struct objfile *);
172 // OBSOLETE static int
173 // OBSOLETE read_cfront_member_functions (struct field_info *, char **,
174 // OBSOLETE struct type *, struct objfile *);
176 // OBSOLETE /* end new functions added for cfront support */
177 #endif /* OBSOLETE CFront */
179 static char *find_name_end (char *name);
181 static void add_live_range (struct objfile *, struct symbol *, CORE_ADDR,
184 static int resolve_live_range (struct objfile *, struct symbol *, char *);
186 static int process_reference (char **string);
188 static CORE_ADDR ref_search_value (int refnum);
190 static int resolve_symbol_reference (struct objfile *, struct symbol *,
193 void stabsread_clear_cache (void);
195 static const char vptr_name[] = "_vptr$";
196 static const char vb_name[] = "_vb$";
198 /* Define this as 1 if a pcc declaration of a char or short argument
199 gives the correct address. Otherwise assume pcc gives the
200 address of the corresponding int, which is not the same on a
201 big-endian machine. */
203 #if !defined (BELIEVE_PCC_PROMOTION)
204 #define BELIEVE_PCC_PROMOTION 0
208 invalid_cpp_abbrev_complaint (const char *arg1)
210 complaint (&symfile_complaints, "invalid C++ abbreviation `%s'", arg1);
214 reg_value_complaint (int arg1, int arg2, const char *arg3)
216 complaint (&symfile_complaints,
217 "register number %d too large (max %d) in symbol %s", arg1, arg2,
222 stabs_general_complaint (const char *arg1)
224 complaint (&symfile_complaints, "%s", arg1);
228 lrs_general_complaint (const char *arg1)
230 complaint (&symfile_complaints, "%s", arg1);
233 /* Make a list of forward references which haven't been defined. */
235 static struct type **undef_types;
236 static int undef_types_allocated;
237 static int undef_types_length;
238 static struct symbol *current_symbol = NULL;
240 /* Check for and handle cretinous stabs symbol name continuation! */
241 #define STABS_CONTINUE(pp,objfile) \
243 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
244 *(pp) = next_symbol_text (objfile); \
248 /* Look up a dbx type-number pair. Return the address of the slot
249 where the type for that number-pair is stored.
250 The number-pair is in TYPENUMS.
252 This can be used for finding the type associated with that pair
253 or for associating a new type with the pair. */
255 static struct type **
256 dbx_lookup_type (int typenums[2])
258 int filenum = typenums[0];
259 int index = typenums[1];
262 struct header_file *f;
265 if (filenum == -1) /* -1,-1 is for temporary types. */
268 if (filenum < 0 || filenum >= n_this_object_header_files)
270 complaint (&symfile_complaints,
271 "Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
272 filenum, index, symnum);
280 /* Caller wants address of address of type. We think
281 that negative (rs6k builtin) types will never appear as
282 "lvalues", (nor should they), so we stuff the real type
283 pointer into a temp, and return its address. If referenced,
284 this will do the right thing. */
285 static struct type *temp_type;
287 temp_type = rs6000_builtin_type (index);
291 /* Type is defined outside of header files.
292 Find it in this object file's type vector. */
293 if (index >= type_vector_length)
295 old_len = type_vector_length;
298 type_vector_length = INITIAL_TYPE_VECTOR_LENGTH;
299 type_vector = (struct type **)
300 xmalloc (type_vector_length * sizeof (struct type *));
302 while (index >= type_vector_length)
304 type_vector_length *= 2;
306 type_vector = (struct type **)
307 xrealloc ((char *) type_vector,
308 (type_vector_length * sizeof (struct type *)));
309 memset (&type_vector[old_len], 0,
310 (type_vector_length - old_len) * sizeof (struct type *));
312 return (&type_vector[index]);
316 real_filenum = this_object_header_files[filenum];
318 if (real_filenum >= N_HEADER_FILES (current_objfile))
320 struct type *temp_type;
321 struct type **temp_type_p;
323 warning ("GDB internal error: bad real_filenum");
326 temp_type = init_type (TYPE_CODE_ERROR, 0, 0, NULL, NULL);
327 temp_type_p = (struct type **) xmalloc (sizeof (struct type *));
328 *temp_type_p = temp_type;
332 f = HEADER_FILES (current_objfile) + real_filenum;
334 f_orig_length = f->length;
335 if (index >= f_orig_length)
337 while (index >= f->length)
341 f->vector = (struct type **)
342 xrealloc ((char *) f->vector, f->length * sizeof (struct type *));
343 memset (&f->vector[f_orig_length], 0,
344 (f->length - f_orig_length) * sizeof (struct type *));
346 return (&f->vector[index]);
350 /* Make sure there is a type allocated for type numbers TYPENUMS
351 and return the type object.
352 This can create an empty (zeroed) type object.
353 TYPENUMS may be (-1, -1) to return a new type object that is not
354 put into the type vector, and so may not be referred to by number. */
357 dbx_alloc_type (int typenums[2], struct objfile *objfile)
359 struct type **type_addr;
361 if (typenums[0] == -1)
363 return (alloc_type (objfile));
366 type_addr = dbx_lookup_type (typenums);
368 /* If we are referring to a type not known at all yet,
369 allocate an empty type for it.
370 We will fill it in later if we find out how. */
373 *type_addr = alloc_type (objfile);
379 /* for all the stabs in a given stab vector, build appropriate types
380 and fix their symbols in given symbol vector. */
383 patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs,
384 struct objfile *objfile)
394 /* for all the stab entries, find their corresponding symbols and
395 patch their types! */
397 for (ii = 0; ii < stabs->count; ++ii)
399 name = stabs->stab[ii];
400 pp = (char *) strchr (name, ':');
404 pp = (char *) strchr (pp, ':');
406 sym = find_symbol_in_list (symbols, name, pp - name);
409 /* FIXME-maybe: it would be nice if we noticed whether
410 the variable was defined *anywhere*, not just whether
411 it is defined in this compilation unit. But neither
412 xlc or GCC seem to need such a definition, and until
413 we do psymtabs (so that the minimal symbols from all
414 compilation units are available now), I'm not sure
415 how to get the information. */
417 /* On xcoff, if a global is defined and never referenced,
418 ld will remove it from the executable. There is then
419 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
420 sym = (struct symbol *)
421 obstack_alloc (&objfile->symbol_obstack,
422 sizeof (struct symbol));
424 memset (sym, 0, sizeof (struct symbol));
425 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
426 SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
427 DEPRECATED_SYMBOL_NAME (sym) =
428 obsavestring (name, pp - name, &objfile->symbol_obstack);
430 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
432 /* I don't think the linker does this with functions,
433 so as far as I know this is never executed.
434 But it doesn't hurt to check. */
436 lookup_function_type (read_type (&pp, objfile));
440 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
442 add_symbol_to_list (sym, &global_symbols);
447 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
450 lookup_function_type (read_type (&pp, objfile));
454 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
462 /* Read a number by which a type is referred to in dbx data,
463 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
464 Just a single number N is equivalent to (0,N).
465 Return the two numbers by storing them in the vector TYPENUMS.
466 TYPENUMS will then be used as an argument to dbx_lookup_type.
468 Returns 0 for success, -1 for error. */
471 read_type_number (char **pp, int *typenums)
477 typenums[0] = read_huge_number (pp, ',', &nbits);
480 typenums[1] = read_huge_number (pp, ')', &nbits);
487 typenums[1] = read_huge_number (pp, 0, &nbits);
495 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
496 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
497 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
498 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
500 #if 0 /* OBSOLETE CFront */
501 // OBSOLETE #define CFRONT_VISIBILITY_PRIVATE '2' /* Stabs character for private field */
502 // OBSOLETE #define CFRONT_VISIBILITY_PUBLIC '1' /* Stabs character for public field */
504 // OBSOLETE /* This code added to support parsing of ARM/Cfront stabs strings */
506 // OBSOLETE /* Get substring from string up to char c, advance string pointer past
507 // OBSOLETE suibstring. */
509 // OBSOLETE static char *
510 // OBSOLETE get_substring (char **p, int c)
512 // OBSOLETE char *str;
513 // OBSOLETE str = *p;
514 // OBSOLETE *p = strchr (*p, c);
522 // OBSOLETE return str;
525 // OBSOLETE /* Physname gets strcat'd onto sname in order to recreate the mangled
526 // OBSOLETE name (see funtion gdb_mangle_name in gdbtypes.c). For cfront, make
527 // OBSOLETE the physname look like that of g++ - take out the initial mangling
528 // OBSOLETE eg: for sname="a" and fname="foo__1aFPFs_i" return "FPFs_i" */
530 // OBSOLETE static char *
531 // OBSOLETE get_cfront_method_physname (char *fname)
533 // OBSOLETE int len = 0;
534 // OBSOLETE /* FIXME would like to make this generic for g++ too, but
535 // OBSOLETE that is already handled in read_member_funcctions */
536 // OBSOLETE char *p = fname;
538 // OBSOLETE /* search ahead to find the start of the mangled suffix */
539 // OBSOLETE if (*p == '_' && *(p + 1) == '_') /* compiler generated; probably a ctor/dtor */
541 // OBSOLETE while (p && (unsigned) ((p + 1) - fname) < strlen (fname) && *(p + 1) != '_')
542 // OBSOLETE p = strchr (p, '_');
543 // OBSOLETE if (!(p && *p == '_' && *(p + 1) == '_'))
544 // OBSOLETE error ("Invalid mangled function name %s", fname);
545 // OBSOLETE p += 2; /* advance past '__' */
547 // OBSOLETE /* struct name length and name of type should come next; advance past it */
548 // OBSOLETE while (isdigit (*p))
550 // OBSOLETE len = len * 10 + (*p - '0');
553 // OBSOLETE p += len;
555 // OBSOLETE return p;
558 // OBSOLETE static void
559 // OBSOLETE msg_unknown_complaint (const char *arg1)
561 // OBSOLETE complaint (&symfile_complaints, "Unsupported token in stabs string %s", arg1);
564 // OBSOLETE /* Read base classes within cfront class definition.
565 // OBSOLETE eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
566 // OBSOLETE ^^^^^^^^^^^^^^^^^^
568 // OBSOLETE A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
572 // OBSOLETE static int
573 // OBSOLETE read_cfront_baseclasses (struct field_info *fip, char **pp, struct type *type,
574 // OBSOLETE struct objfile *objfile)
576 // OBSOLETE int bnum = 0;
579 // OBSOLETE struct nextfield *new;
581 // OBSOLETE if (**pp == ';') /* no base classes; return */
584 // OBSOLETE return 1;
587 // OBSOLETE /* first count base classes so we can allocate space before parsing */
588 // OBSOLETE for (p = *pp; p && *p && *p != ';'; p++)
590 // OBSOLETE if (*p == ' ')
593 // OBSOLETE bnum++; /* add one more for last one */
595 // OBSOLETE /* now parse the base classes until we get to the start of the methods
596 // OBSOLETE (code extracted and munged from read_baseclasses) */
597 // OBSOLETE ALLOCATE_CPLUS_STRUCT_TYPE (type);
598 // OBSOLETE TYPE_N_BASECLASSES (type) = bnum;
600 // OBSOLETE /* allocate space */
602 // OBSOLETE int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
603 // OBSOLETE char *pointer;
605 // OBSOLETE pointer = (char *) TYPE_ALLOC (type, num_bytes);
606 // OBSOLETE TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
608 // OBSOLETE B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
610 // OBSOLETE for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
612 // OBSOLETE new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
613 // OBSOLETE make_cleanup (xfree, new);
614 // OBSOLETE memset (new, 0, sizeof (struct nextfield));
615 // OBSOLETE new->next = fip->list;
616 // OBSOLETE fip->list = new;
617 // OBSOLETE FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */
619 // OBSOLETE STABS_CONTINUE (pp, objfile);
621 // OBSOLETE /* virtual? eg: v2@Bvir */
622 // OBSOLETE if (**pp == 'v')
624 // OBSOLETE SET_TYPE_FIELD_VIRTUAL (type, i);
628 // OBSOLETE /* access? eg: 2@Bvir */
629 // OBSOLETE /* Note: protected inheritance not supported in cfront */
630 // OBSOLETE switch (*(*pp)++)
632 // OBSOLETE case CFRONT_VISIBILITY_PRIVATE:
633 // OBSOLETE new->visibility = VISIBILITY_PRIVATE;
635 // OBSOLETE case CFRONT_VISIBILITY_PUBLIC:
636 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
639 // OBSOLETE /* Bad visibility format. Complain and treat it as
640 // OBSOLETE public. */
642 // OBSOLETE complaint (&symfile_complaints,
643 // OBSOLETE "Unknown visibility `%c' for baseclass",
644 // OBSOLETE new->visibility);
645 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
649 // OBSOLETE /* "@" comes next - eg: @Bvir */
650 // OBSOLETE if (**pp != '@')
652 // OBSOLETE msg_unknown_complaint (*pp);
653 // OBSOLETE return 1;
658 // OBSOLETE /* Set the bit offset of the portion of the object corresponding
659 // OBSOLETE to this baseclass. Always zero in the absence of
660 // OBSOLETE multiple inheritance. */
661 // OBSOLETE /* Unable to read bit position from stabs;
662 // OBSOLETE Assuming no multiple inheritance for now FIXME! */
663 // OBSOLETE /* We may have read this in the structure definition;
664 // OBSOLETE now we should fixup the members to be the actual base classes */
665 // OBSOLETE FIELD_BITPOS (new->field) = 0;
667 // OBSOLETE /* Get the base class name and type */
669 // OBSOLETE char *bname; /* base class name */
670 // OBSOLETE struct symbol *bsym; /* base class */
671 // OBSOLETE char *p1, *p2;
672 // OBSOLETE p1 = strchr (*pp, ' ');
673 // OBSOLETE p2 = strchr (*pp, ';');
674 // OBSOLETE if (p1 < p2)
675 // OBSOLETE bname = get_substring (pp, ' ');
677 // OBSOLETE bname = get_substring (pp, ';');
678 // OBSOLETE if (!bname || !*bname)
680 // OBSOLETE msg_unknown_complaint (*pp);
681 // OBSOLETE return 1;
683 // OBSOLETE /* FIXME! attach base info to type */
684 // OBSOLETE bsym = lookup_symbol (bname, 0, STRUCT_DOMAIN, 0, 0); /*demangled_name */
685 // OBSOLETE if (bsym)
687 // OBSOLETE new->field.type = SYMBOL_TYPE (bsym);
688 // OBSOLETE new->field.name = type_name_no_tag (new->field.type);
692 // OBSOLETE complaint (&symfile_complaints, "Unable to find base type for %s",
694 // OBSOLETE return 1;
698 // OBSOLETE /* If more base classes to parse, loop again.
699 // OBSOLETE We ate the last ' ' or ';' in get_substring,
700 // OBSOLETE so on exit we will have skipped the trailing ';' */
701 // OBSOLETE /* if invalid, return 0; add code to detect - FIXME! */
703 // OBSOLETE return 1;
706 // OBSOLETE /* read cfront member functions.
707 // OBSOLETE pp points to string starting with list of functions
708 // OBSOLETE eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
709 // OBSOLETE ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
710 // OBSOLETE A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
711 // OBSOLETE ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
714 // OBSOLETE static int
715 // OBSOLETE read_cfront_member_functions (struct field_info *fip, char **pp,
716 // OBSOLETE struct type *type, struct objfile *objfile)
718 // OBSOLETE /* This code extracted from read_member_functions
719 // OBSOLETE so as to do the similar thing for our funcs */
721 // OBSOLETE int nfn_fields = 0;
722 // OBSOLETE int length = 0;
723 // OBSOLETE /* Total number of member functions defined in this class. If the class
724 // OBSOLETE defines two `f' functions, and one `g' function, then this will have
725 // OBSOLETE the value 3. */
726 // OBSOLETE int total_length = 0;
728 // OBSOLETE struct next_fnfield
730 // OBSOLETE struct next_fnfield *next;
731 // OBSOLETE struct fn_field fn_field;
733 // OBSOLETE *sublist;
734 // OBSOLETE struct type *look_ahead_type;
735 // OBSOLETE struct next_fnfieldlist *new_fnlist;
736 // OBSOLETE struct next_fnfield *new_sublist;
737 // OBSOLETE char *main_fn_name;
738 // OBSOLETE char *fname;
739 // OBSOLETE struct symbol *ref_func = 0;
741 // OBSOLETE /* Process each list until we find the end of the member functions.
742 // OBSOLETE eg: p = "__ct__1AFv foo__1AFv ;;;" */
744 // OBSOLETE STABS_CONTINUE (pp, objfile); /* handle \\ */
746 // OBSOLETE while (**pp != ';' && (fname = get_substring (pp, ' '), fname))
748 // OBSOLETE int is_static = 0;
749 // OBSOLETE int sublist_count = 0;
750 // OBSOLETE char *pname;
751 // OBSOLETE if (fname[0] == '*') /* static member */
753 // OBSOLETE is_static = 1;
754 // OBSOLETE sublist_count++;
757 // OBSOLETE ref_func = lookup_symbol (fname, 0, VAR_DOMAIN, 0, 0); /* demangled name */
758 // OBSOLETE if (!ref_func)
760 // OBSOLETE complaint (&symfile_complaints,
761 // OBSOLETE "Unable to find function symbol for %s", fname);
762 // OBSOLETE continue;
764 // OBSOLETE sublist = NULL;
765 // OBSOLETE look_ahead_type = NULL;
766 // OBSOLETE length = 0;
768 // OBSOLETE new_fnlist = (struct next_fnfieldlist *)
769 // OBSOLETE xmalloc (sizeof (struct next_fnfieldlist));
770 // OBSOLETE make_cleanup (xfree, new_fnlist);
771 // OBSOLETE memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
773 // OBSOLETE /* The following is code to work around cfront generated stabs.
774 // OBSOLETE The stabs contains full mangled name for each field.
775 // OBSOLETE We try to demangle the name and extract the field name out of it. */
777 // OBSOLETE char *dem, *dem_p, *dem_args;
778 // OBSOLETE int dem_len;
779 // OBSOLETE dem = cplus_demangle (fname, DMGL_ANSI | DMGL_PARAMS);
780 // OBSOLETE if (dem != NULL)
782 // OBSOLETE dem_p = strrchr (dem, ':');
783 // OBSOLETE if (dem_p != 0 && *(dem_p - 1) == ':')
785 // OBSOLETE /* get rid of args */
786 // OBSOLETE dem_args = strchr (dem_p, '(');
787 // OBSOLETE if (dem_args == NULL)
788 // OBSOLETE dem_len = strlen (dem_p);
790 // OBSOLETE dem_len = dem_args - dem_p;
791 // OBSOLETE main_fn_name =
792 // OBSOLETE obsavestring (dem_p, dem_len, &objfile->type_obstack);
796 // OBSOLETE main_fn_name =
797 // OBSOLETE obsavestring (fname, strlen (fname), &objfile->type_obstack);
799 // OBSOLETE } /* end of code for cfront work around */
801 // OBSOLETE new_fnlist->fn_fieldlist.name = main_fn_name;
803 // OBSOLETE /*-------------------------------------------------*/
804 // OBSOLETE /* Set up the sublists
805 // OBSOLETE Sublists are stuff like args, static, visibility, etc.
806 // OBSOLETE so in ARM, we have to set that info some other way.
807 // OBSOLETE Multiple sublists happen if overloading
808 // OBSOLETE eg: foo::26=##1;:;2A.;
809 // OBSOLETE In g++, we'd loop here thru all the sublists... */
811 // OBSOLETE new_sublist =
812 // OBSOLETE (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
813 // OBSOLETE make_cleanup (xfree, new_sublist);
814 // OBSOLETE memset (new_sublist, 0, sizeof (struct next_fnfield));
816 // OBSOLETE /* eat 1; from :;2A.; */
817 // OBSOLETE new_sublist->fn_field.type = SYMBOL_TYPE (ref_func); /* normally takes a read_type */
818 // OBSOLETE /* Make this type look like a method stub for gdb */
819 // OBSOLETE TYPE_FLAGS (new_sublist->fn_field.type) |= TYPE_FLAG_STUB;
820 // OBSOLETE TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD;
822 // OBSOLETE /* If this is just a stub, then we don't have the real name here. */
823 // OBSOLETE if (TYPE_STUB (new_sublist->fn_field.type))
825 // OBSOLETE if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
826 // OBSOLETE TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
827 // OBSOLETE new_sublist->fn_field.is_stub = 1;
830 // OBSOLETE /* physname used later in mangling; eg PFs_i,5 for foo__1aFPFs_i
831 // OBSOLETE physname gets strcat'd in order to recreate the onto mangled name */
832 // OBSOLETE pname = get_cfront_method_physname (fname);
833 // OBSOLETE new_sublist->fn_field.physname = savestring (pname, strlen (pname));
836 // OBSOLETE /* Set this member function's visibility fields.
837 // OBSOLETE Unable to distinguish access from stabs definition!
838 // OBSOLETE Assuming public for now. FIXME!
839 // OBSOLETE (for private, set new_sublist->fn_field.is_private = 1,
840 // OBSOLETE for public, set new_sublist->fn_field.is_protected = 1) */
842 // OBSOLETE /* Unable to distinguish const/volatile from stabs definition!
843 // OBSOLETE Assuming normal for now. FIXME! */
845 // OBSOLETE new_sublist->fn_field.is_const = 0;
846 // OBSOLETE new_sublist->fn_field.is_volatile = 0; /* volatile not implemented in cfront */
848 // OBSOLETE /* Set virtual/static function info
849 // OBSOLETE How to get vtable offsets ?
850 // OBSOLETE Assuming normal for now FIXME!!
851 // OBSOLETE For vtables, figure out from whence this virtual function came.
852 // OBSOLETE It may belong to virtual function table of
853 // OBSOLETE one of its baseclasses.
855 // OBSOLETE new_sublist -> fn_field.voffset = vtable offset,
856 // OBSOLETE new_sublist -> fn_field.fcontext = look_ahead_type;
857 // OBSOLETE where look_ahead_type is type of baseclass */
858 // OBSOLETE if (is_static)
859 // OBSOLETE new_sublist->fn_field.voffset = VOFFSET_STATIC;
860 // OBSOLETE else /* normal member function. */
861 // OBSOLETE new_sublist->fn_field.voffset = 0;
862 // OBSOLETE new_sublist->fn_field.fcontext = 0;
865 // OBSOLETE /* Prepare new sublist */
866 // OBSOLETE new_sublist->next = sublist;
867 // OBSOLETE sublist = new_sublist;
868 // OBSOLETE length++;
870 // OBSOLETE /* In g++, we loop thu sublists - now we set from functions. */
871 // OBSOLETE new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
872 // OBSOLETE obstack_alloc (&objfile->type_obstack,
873 // OBSOLETE sizeof (struct fn_field) * length);
874 // OBSOLETE memset (new_fnlist->fn_fieldlist.fn_fields, 0,
875 // OBSOLETE sizeof (struct fn_field) * length);
876 // OBSOLETE for (i = length; (i--, sublist); sublist = sublist->next)
878 // OBSOLETE new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
881 // OBSOLETE new_fnlist->fn_fieldlist.length = length;
882 // OBSOLETE new_fnlist->next = fip->fnlist;
883 // OBSOLETE fip->fnlist = new_fnlist;
884 // OBSOLETE nfn_fields++;
885 // OBSOLETE total_length += length;
886 // OBSOLETE STABS_CONTINUE (pp, objfile); /* handle \\ */
887 // OBSOLETE } /* end of loop */
889 // OBSOLETE if (nfn_fields)
891 // OBSOLETE /* type should already have space */
892 // OBSOLETE TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
893 // OBSOLETE TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields);
894 // OBSOLETE memset (TYPE_FN_FIELDLISTS (type), 0,
895 // OBSOLETE sizeof (struct fn_fieldlist) * nfn_fields);
896 // OBSOLETE TYPE_NFN_FIELDS (type) = nfn_fields;
897 // OBSOLETE TYPE_NFN_FIELDS_TOTAL (type) = total_length;
900 // OBSOLETE /* end of scope for reading member func */
902 // OBSOLETE /* eg: ";;" */
904 // OBSOLETE /* Skip trailing ';' and bump count of number of fields seen */
905 // OBSOLETE if (**pp == ';')
908 // OBSOLETE return 0;
909 // OBSOLETE return 1;
912 // OBSOLETE /* This routine fixes up partial cfront types that were created
913 // OBSOLETE while parsing the stabs. The main need for this function is
914 // OBSOLETE to add information such as methods to classes.
915 // OBSOLETE Examples of "p": "sA;;__ct__1AFv foo__1AFv ;;;" */
917 // OBSOLETE resolve_cfront_continuation (struct objfile *objfile, struct symbol *sym,
920 // OBSOLETE struct symbol *ref_sym = 0;
921 // OBSOLETE char *sname;
922 // OBSOLETE /* snarfed from read_struct_type */
923 // OBSOLETE struct field_info fi;
924 // OBSOLETE struct type *type;
925 // OBSOLETE struct cleanup *back_to;
927 // OBSOLETE /* Need to make sure that fi isn't gunna conflict with struct
928 // OBSOLETE in case struct already had some fnfs */
929 // OBSOLETE fi.list = NULL;
930 // OBSOLETE fi.fnlist = NULL;
931 // OBSOLETE back_to = make_cleanup (null_cleanup, 0);
933 // OBSOLETE /* We only accept structs, classes and unions at the moment.
934 // OBSOLETE Other continuation types include t (typedef), r (long dbl), ...
935 // OBSOLETE We may want to add support for them as well;
936 // OBSOLETE right now they are handled by duplicating the symbol information
937 // OBSOLETE into the type information (see define_symbol) */
938 // OBSOLETE if (*p != 's' /* structs */
939 // OBSOLETE && *p != 'c' /* class */
940 // OBSOLETE && *p != 'u') /* union */
941 // OBSOLETE return 0; /* only handle C++ types */
944 // OBSOLETE /* Get symbol typs name and validate
945 // OBSOLETE eg: p = "A;;__ct__1AFv foo__1AFv ;;;" */
946 // OBSOLETE sname = get_substring (&p, ';');
947 // OBSOLETE if (!sname || strcmp (sname, DEPRECATED_SYMBOL_NAME (sym)))
948 // OBSOLETE error ("Internal error: base symbol type name does not match\n");
950 // OBSOLETE /* Find symbol's internal gdb reference using demangled_name.
951 // OBSOLETE This is the real sym that we want;
952 // OBSOLETE sym was a temp hack to make debugger happy */
953 // OBSOLETE ref_sym = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym), 0, STRUCT_DOMAIN, 0, 0);
954 // OBSOLETE type = SYMBOL_TYPE (ref_sym);
957 // OBSOLETE /* Now read the baseclasses, if any, read the regular C struct or C++
958 // OBSOLETE class member fields, attach the fields to the type, read the C++
959 // OBSOLETE member functions, attach them to the type, and then read any tilde
960 // OBSOLETE field (baseclass specifier for the class holding the main vtable). */
962 // OBSOLETE if (!read_cfront_baseclasses (&fi, &p, type, objfile)
963 // OBSOLETE /* g++ does this next, but cfront already did this:
964 // OBSOLETE || !read_struct_fields (&fi, &p, type, objfile) */
965 // OBSOLETE || !copy_cfront_struct_fields (&fi, type, objfile)
966 // OBSOLETE || !read_cfront_member_functions (&fi, &p, type, objfile)
967 // OBSOLETE || !read_cfront_static_fields (&fi, &p, type, objfile)
968 // OBSOLETE || !attach_fields_to_type (&fi, type, objfile)
969 // OBSOLETE || !attach_fn_fields_to_type (&fi, type)
970 // OBSOLETE /* g++ does this next, but cfront doesn't seem to have this:
971 // OBSOLETE || !read_tilde_fields (&fi, &p, type, objfile) */
974 // OBSOLETE type = error_type (&p, objfile);
977 // OBSOLETE do_cleanups (back_to);
978 // OBSOLETE return 0;
980 // OBSOLETE /* End of code added to support parsing of ARM/Cfront stabs strings */
981 #endif /* OBSOLETE CFront */
983 /* This routine fixes up symbol references/aliases to point to the original
984 symbol definition. Returns 0 on failure, non-zero on success. */
987 resolve_symbol_reference (struct objfile *objfile, struct symbol *sym, char *p)
990 struct symbol *ref_sym = 0;
991 struct alias_list *alias;
993 /* If this is not a symbol reference return now. */
997 /* Use "#<num>" as the name; we'll fix the name later.
998 We stored the original symbol name as "#<id>=<name>"
999 so we can now search for "#<id>" to resolving the reference.
1000 We'll fix the names later by removing the "#<id>" or "#<id>=" */
1002 /*---------------------------------------------------------*/
1003 /* Get the reference id number, and
1004 advance p past the names so we can parse the rest.
1005 eg: id=2 for p : "2=", "2=z:r(0,1)" "2:r(0,1);l(#5,#6),l(#7,#4)" */
1006 /*---------------------------------------------------------*/
1008 /* This gets reference name from string. sym may not have a name. */
1010 /* Get the reference number associated with the reference id in the
1011 gdb stab string. From that reference number, get the main/primary
1012 symbol for this alias. */
1013 refnum = process_reference (&p);
1014 ref_sym = ref_search (refnum);
1017 lrs_general_complaint ("symbol for reference not found");
1021 /* Parse the stab of the referencing symbol
1022 now that we have the referenced symbol.
1023 Add it as a new symbol and a link back to the referenced symbol.
1024 eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
1027 /* If the stab symbol table and string contain:
1028 RSYM 0 5 00000000 868 #15=z:r(0,1)
1029 LBRAC 0 0 00000000 899 #5=
1030 SLINE 0 16 00000003 923 #6=
1031 Then the same symbols can be later referenced by:
1032 RSYM 0 5 00000000 927 #15:r(0,1);l(#5,#6)
1033 This is used in live range splitting to:
1034 1) specify that a symbol (#15) is actually just a new storage
1035 class for a symbol (#15=z) which was previously defined.
1036 2) specify that the beginning and ending ranges for a symbol
1037 (#15) are the values of the beginning (#5) and ending (#6)
1040 /* Read number as reference id.
1041 eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
1042 /* FIXME! Might I want to use SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
1043 in case of "l(0,0)"? */
1045 /*--------------------------------------------------*/
1046 /* Add this symbol to the reference list. */
1047 /*--------------------------------------------------*/
1049 alias = (struct alias_list *) obstack_alloc (&objfile->type_obstack,
1050 sizeof (struct alias_list));
1053 lrs_general_complaint ("Unable to allocate alias list memory");
1060 if (!SYMBOL_ALIASES (ref_sym))
1062 SYMBOL_ALIASES (ref_sym) = alias;
1066 struct alias_list *temp;
1068 /* Get to the end of the list. */
1069 for (temp = SYMBOL_ALIASES (ref_sym);
1076 /* Want to fix up name so that other functions (eg. valops)
1077 will correctly print the name.
1078 Don't add_symbol_to_list so that lookup_symbol won't find it.
1079 nope... needed for fixups. */
1080 DEPRECATED_SYMBOL_NAME (sym) = DEPRECATED_SYMBOL_NAME (ref_sym);
1086 /* Structure for storing pointers to reference definitions for fast lookup
1087 during "process_later". */
1096 #define MAX_CHUNK_REFS 100
1097 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
1098 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
1100 static struct ref_map *ref_map;
1102 /* Ptr to free cell in chunk's linked list. */
1103 static int ref_count = 0;
1105 /* Number of chunks malloced. */
1106 static int ref_chunk = 0;
1108 /* This file maintains a cache of stabs aliases found in the symbol
1109 table. If the symbol table changes, this cache must be cleared
1110 or we are left holding onto data in invalid obstacks. */
1112 stabsread_clear_cache (void)
1118 /* Create array of pointers mapping refids to symbols and stab strings.
1119 Add pointers to reference definition symbols and/or their values as we
1120 find them, using their reference numbers as our index.
1121 These will be used later when we resolve references. */
1123 ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value)
1127 if (refnum >= ref_count)
1128 ref_count = refnum + 1;
1129 if (ref_count > ref_chunk * MAX_CHUNK_REFS)
1131 int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS;
1132 int new_chunks = new_slots / MAX_CHUNK_REFS + 1;
1133 ref_map = (struct ref_map *)
1134 xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks));
1135 memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, new_chunks * REF_CHUNK_SIZE);
1136 ref_chunk += new_chunks;
1138 ref_map[refnum].stabs = stabs;
1139 ref_map[refnum].sym = sym;
1140 ref_map[refnum].value = value;
1143 /* Return defined sym for the reference REFNUM. */
1145 ref_search (int refnum)
1147 if (refnum < 0 || refnum > ref_count)
1149 return ref_map[refnum].sym;
1152 /* Return value for the reference REFNUM. */
1155 ref_search_value (int refnum)
1157 if (refnum < 0 || refnum > ref_count)
1159 return ref_map[refnum].value;
1162 /* Parse a reference id in STRING and return the resulting
1163 reference number. Move STRING beyond the reference id. */
1166 process_reference (char **string)
1171 if (**string != '#')
1174 /* Advance beyond the initial '#'. */
1177 /* Read number as reference id. */
1178 while (*p && isdigit (*p))
1180 refnum = refnum * 10 + *p - '0';
1187 /* If STRING defines a reference, store away a pointer to the reference
1188 definition for later use. Return the reference number. */
1191 symbol_reference_defined (char **string)
1196 refnum = process_reference (&p);
1198 /* Defining symbols end in '=' */
1201 /* Symbol is being defined here. */
1207 /* Must be a reference. Either the symbol has already been defined,
1208 or this is a forward reference to it. */
1216 define_symbol (CORE_ADDR valu, char *string, int desc, int type,
1217 struct objfile *objfile)
1220 char *p = (char *) find_name_end (string);
1225 /* We would like to eliminate nameless symbols, but keep their types.
1226 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
1227 to type 2, but, should not create a symbol to address that type. Since
1228 the symbol will be nameless, there is no way any user can refer to it. */
1232 /* Ignore syms with empty names. */
1236 /* Ignore old-style symbols from cc -go */
1243 p = strchr (p, ':');
1246 /* If a nameless stab entry, all we need is the type, not the symbol.
1247 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
1248 nameless = (p == string || ((string[0] == ' ') && (string[1] == ':')));
1250 current_symbol = sym = (struct symbol *)
1251 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
1252 memset (sym, 0, sizeof (struct symbol));
1254 switch (type & N_TYPE)
1257 SYMBOL_SECTION (sym) = SECT_OFF_TEXT (objfile);
1260 SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile);
1263 SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile);
1267 if (processing_gcc_compilation)
1269 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
1270 number of bytes occupied by a type or object, which we ignore. */
1271 SYMBOL_LINE (sym) = desc;
1275 SYMBOL_LINE (sym) = 0; /* unknown */
1278 if (is_cplus_marker (string[0]))
1280 /* Special GNU C++ names. */
1284 DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"),
1285 &objfile->symbol_obstack);
1288 case 'v': /* $vtbl_ptr_type */
1289 /* Was: DEPRECATED_SYMBOL_NAME (sym) = "vptr"; */
1293 DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"),
1294 &objfile->symbol_obstack);
1298 /* This was an anonymous type that was never fixed up. */
1301 #ifdef STATIC_TRANSFORM_NAME
1303 /* SunPRO (3.0 at least) static variable encoding. */
1308 complaint (&symfile_complaints, "Unknown C++ symbol name `%s'",
1310 goto normal; /* Do *something* with it */
1313 else if (string[0] == '#')
1315 /* Special GNU C extension for referencing symbols. */
1319 /* If STRING defines a new reference id, then add it to the
1320 reference map. Else it must be referring to a previously
1321 defined symbol, so add it to the alias list of the previously
1324 refnum = symbol_reference_defined (&s);
1326 ref_add (refnum, sym, string, SYMBOL_VALUE (sym));
1327 else if (!resolve_symbol_reference (objfile, sym, string))
1330 /* S..P contains the name of the symbol. We need to store
1331 the correct name into DEPRECATED_SYMBOL_NAME. */
1336 SYMBOL_SET_NAMES (sym, s, nlen, objfile);
1338 /* FIXME! Want DEPRECATED_SYMBOL_NAME (sym) = 0;
1339 Get error if leave name 0. So give it something. */
1342 SYMBOL_SET_NAMES (sym, string, nlen, objfile);
1345 /* Advance STRING beyond the reference id. */
1351 SYMBOL_LANGUAGE (sym) = current_subfile->language;
1352 SYMBOL_SET_NAMES (sym, string, p - string, objfile);
1356 /* Determine the type of name being defined. */
1358 /* Getting GDB to correctly skip the symbol on an undefined symbol
1359 descriptor and not ever dump core is a very dodgy proposition if
1360 we do things this way. I say the acorn RISC machine can just
1361 fix their compiler. */
1362 /* The Acorn RISC machine's compiler can put out locals that don't
1363 start with "234=" or "(3,4)=", so assume anything other than the
1364 deftypes we know how to handle is a local. */
1365 if (!strchr ("cfFGpPrStTvVXCR", *p))
1367 if (isdigit (*p) || *p == '(' || *p == '-')
1376 /* c is a special case, not followed by a type-number.
1377 SYMBOL:c=iVALUE for an integer constant symbol.
1378 SYMBOL:c=rVALUE for a floating constant symbol.
1379 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
1380 e.g. "b:c=e6,0" for "const b = blob1"
1381 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
1384 SYMBOL_CLASS (sym) = LOC_CONST;
1385 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1386 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1387 add_symbol_to_list (sym, &file_symbols);
1395 double d = atof (p);
1398 /* FIXME-if-picky-about-floating-accuracy: Should be using
1399 target arithmetic to get the value. real.c in GCC
1400 probably has the necessary code. */
1402 /* FIXME: lookup_fundamental_type is a hack. We should be
1403 creating a type especially for the type of float constants.
1404 Problem is, what type should it be?
1406 Also, what should the name of this type be? Should we
1407 be using 'S' constants (see stabs.texinfo) instead? */
1409 SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
1412 obstack_alloc (&objfile->symbol_obstack,
1413 TYPE_LENGTH (SYMBOL_TYPE (sym)));
1414 store_typed_floating (dbl_valu, SYMBOL_TYPE (sym), d);
1415 SYMBOL_VALUE_BYTES (sym) = dbl_valu;
1416 SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
1421 /* Defining integer constants this way is kind of silly,
1422 since 'e' constants allows the compiler to give not
1423 only the value, but the type as well. C has at least
1424 int, long, unsigned int, and long long as constant
1425 types; other languages probably should have at least
1426 unsigned as well as signed constants. */
1428 /* We just need one int constant type for all objfiles.
1429 It doesn't depend on languages or anything (arguably its
1430 name should be a language-specific name for a type of
1431 that size, but I'm inclined to say that if the compiler
1432 wants a nice name for the type, it can use 'e'). */
1433 static struct type *int_const_type;
1435 /* Yes, this is as long as a *host* int. That is because we
1437 if (int_const_type == NULL)
1439 init_type (TYPE_CODE_INT,
1440 sizeof (int) * HOST_CHAR_BIT / TARGET_CHAR_BIT, 0,
1442 (struct objfile *) NULL);
1443 SYMBOL_TYPE (sym) = int_const_type;
1444 SYMBOL_VALUE (sym) = atoi (p);
1445 SYMBOL_CLASS (sym) = LOC_CONST;
1449 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
1450 can be represented as integral.
1451 e.g. "b:c=e6,0" for "const b = blob1"
1452 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
1454 SYMBOL_CLASS (sym) = LOC_CONST;
1455 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1459 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1464 /* If the value is too big to fit in an int (perhaps because
1465 it is unsigned), or something like that, we silently get
1466 a bogus value. The type and everything else about it is
1467 correct. Ideally, we should be using whatever we have
1468 available for parsing unsigned and long long values,
1470 SYMBOL_VALUE (sym) = atoi (p);
1475 SYMBOL_CLASS (sym) = LOC_CONST;
1476 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1479 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1480 add_symbol_to_list (sym, &file_symbols);
1484 /* The name of a caught exception. */
1485 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1486 SYMBOL_CLASS (sym) = LOC_LABEL;
1487 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1488 SYMBOL_VALUE_ADDRESS (sym) = valu;
1489 add_symbol_to_list (sym, &local_symbols);
1493 /* A static function definition. */
1494 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1495 SYMBOL_CLASS (sym) = LOC_BLOCK;
1496 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1497 add_symbol_to_list (sym, &file_symbols);
1498 /* fall into process_function_types. */
1500 process_function_types:
1501 /* Function result types are described as the result type in stabs.
1502 We need to convert this to the function-returning-type-X type
1503 in GDB. E.g. "int" is converted to "function returning int". */
1504 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC)
1505 SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym));
1507 /* All functions in C++ have prototypes. Stabs does not offer an
1508 explicit way to identify prototyped or unprototyped functions,
1509 but both GCC and Sun CC emit stabs for the "call-as" type rather
1510 than the "declared-as" type for unprototyped functions, so
1511 we treat all functions as if they were prototyped. This is used
1512 primarily for promotion when calling the function from GDB. */
1513 TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED;
1515 /* fall into process_prototype_types */
1517 process_prototype_types:
1518 /* Sun acc puts declared types of arguments here. */
1521 struct type *ftype = SYMBOL_TYPE (sym);
1526 /* Obtain a worst case guess for the number of arguments
1527 by counting the semicolons. */
1534 /* Allocate parameter information fields and fill them in. */
1535 TYPE_FIELDS (ftype) = (struct field *)
1536 TYPE_ALLOC (ftype, nsemi * sizeof (struct field));
1541 /* A type number of zero indicates the start of varargs.
1542 FIXME: GDB currently ignores vararg functions. */
1543 if (p[0] == '0' && p[1] == '\0')
1545 ptype = read_type (&p, objfile);
1547 /* The Sun compilers mark integer arguments, which should
1548 be promoted to the width of the calling conventions, with
1549 a type which references itself. This type is turned into
1550 a TYPE_CODE_VOID type by read_type, and we have to turn
1551 it back into builtin_type_int here.
1552 FIXME: Do we need a new builtin_type_promoted_int_arg ? */
1553 if (TYPE_CODE (ptype) == TYPE_CODE_VOID)
1554 ptype = builtin_type_int;
1555 TYPE_FIELD_TYPE (ftype, nparams) = ptype;
1556 TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0;
1558 TYPE_NFIELDS (ftype) = nparams;
1559 TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED;
1564 /* A global function definition. */
1565 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1566 SYMBOL_CLASS (sym) = LOC_BLOCK;
1567 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1568 add_symbol_to_list (sym, &global_symbols);
1569 goto process_function_types;
1572 /* For a class G (global) symbol, it appears that the
1573 value is not correct. It is necessary to search for the
1574 corresponding linker definition to find the value.
1575 These definitions appear at the end of the namelist. */
1576 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1577 SYMBOL_CLASS (sym) = LOC_STATIC;
1578 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1579 /* Don't add symbol references to global_sym_chain.
1580 Symbol references don't have valid names and wont't match up with
1581 minimal symbols when the global_sym_chain is relocated.
1582 We'll fixup symbol references when we fixup the defining symbol. */
1583 if (DEPRECATED_SYMBOL_NAME (sym) && DEPRECATED_SYMBOL_NAME (sym)[0] != '#')
1585 i = hashname (DEPRECATED_SYMBOL_NAME (sym));
1586 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
1587 global_sym_chain[i] = sym;
1589 add_symbol_to_list (sym, &global_symbols);
1592 /* This case is faked by a conditional above,
1593 when there is no code letter in the dbx data.
1594 Dbx data never actually contains 'l'. */
1597 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1598 SYMBOL_CLASS (sym) = LOC_LOCAL;
1599 SYMBOL_VALUE (sym) = valu;
1600 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1601 add_symbol_to_list (sym, &local_symbols);
1606 /* pF is a two-letter code that means a function parameter in Fortran.
1607 The type-number specifies the type of the return value.
1608 Translate it into a pointer-to-function type. */
1612 = lookup_pointer_type
1613 (lookup_function_type (read_type (&p, objfile)));
1616 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1618 SYMBOL_CLASS (sym) = LOC_ARG;
1619 SYMBOL_VALUE (sym) = valu;
1620 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1621 add_symbol_to_list (sym, &local_symbols);
1623 if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG)
1625 /* On little-endian machines, this crud is never necessary,
1626 and, if the extra bytes contain garbage, is harmful. */
1630 /* If it's gcc-compiled, if it says `short', believe it. */
1631 if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION)
1634 if (!BELIEVE_PCC_PROMOTION)
1636 /* This is the signed type which arguments get promoted to. */
1637 static struct type *pcc_promotion_type;
1638 /* This is the unsigned type which arguments get promoted to. */
1639 static struct type *pcc_unsigned_promotion_type;
1641 /* Call it "int" because this is mainly C lossage. */
1642 if (pcc_promotion_type == NULL)
1643 pcc_promotion_type =
1644 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
1647 if (pcc_unsigned_promotion_type == NULL)
1648 pcc_unsigned_promotion_type =
1649 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
1650 TYPE_FLAG_UNSIGNED, "unsigned int", NULL);
1652 if (BELIEVE_PCC_PROMOTION_TYPE)
1654 /* This is defined on machines (e.g. sparc) where we
1655 should believe the type of a PCC 'short' argument,
1656 but shouldn't believe the address (the address is the
1657 address of the corresponding int).
1659 My guess is that this correction, as opposed to
1660 changing the parameter to an 'int' (as done below,
1661 for PCC on most machines), is the right thing to do
1662 on all machines, but I don't want to risk breaking
1663 something that already works. On most PCC machines,
1664 the sparc problem doesn't come up because the calling
1665 function has to zero the top bytes (not knowing
1666 whether the called function wants an int or a short),
1667 so there is little practical difference between an
1668 int and a short (except perhaps what happens when the
1669 GDB user types "print short_arg = 0x10000;").
1671 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the
1672 compiler actually produces the correct address (we
1673 don't need to fix it up). I made this code adapt so
1674 that it will offset the symbol if it was pointing at
1675 an int-aligned location and not otherwise. This way
1676 you can use the same gdb for 4.0.x and 4.1 systems.
1678 If the parameter is shorter than an int, and is
1679 integral (e.g. char, short, or unsigned equivalent),
1680 and is claimed to be passed on an integer boundary,
1681 don't believe it! Offset the parameter's address to
1682 the tail-end of that integer. */
1684 if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
1685 && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT
1686 && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (pcc_promotion_type))
1688 SYMBOL_VALUE (sym) += TYPE_LENGTH (pcc_promotion_type)
1689 - TYPE_LENGTH (SYMBOL_TYPE (sym));
1695 /* If PCC says a parameter is a short or a char,
1696 it is really an int. */
1697 if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
1698 && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
1701 TYPE_UNSIGNED (SYMBOL_TYPE (sym))
1702 ? pcc_unsigned_promotion_type
1703 : pcc_promotion_type;
1710 /* acc seems to use P to declare the prototypes of functions that
1711 are referenced by this file. gdb is not prepared to deal
1712 with this extra information. FIXME, it ought to. */
1715 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1716 goto process_prototype_types;
1721 /* Parameter which is in a register. */
1722 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1723 SYMBOL_CLASS (sym) = LOC_REGPARM;
1724 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1725 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1727 reg_value_complaint (SYMBOL_VALUE (sym),
1728 NUM_REGS + NUM_PSEUDO_REGS,
1729 SYMBOL_PRINT_NAME (sym));
1730 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1732 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1733 add_symbol_to_list (sym, &local_symbols);
1737 /* Register variable (either global or local). */
1738 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1739 SYMBOL_CLASS (sym) = LOC_REGISTER;
1740 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1741 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1743 reg_value_complaint (SYMBOL_VALUE (sym),
1744 NUM_REGS + NUM_PSEUDO_REGS,
1745 SYMBOL_PRINT_NAME (sym));
1746 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1748 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1749 if (within_function)
1751 /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
1752 the same name to represent an argument passed in a
1753 register. GCC uses 'P' for the same case. So if we find
1754 such a symbol pair we combine it into one 'P' symbol.
1755 For Sun cc we need to do this regardless of
1756 stabs_argument_has_addr, because the compiler puts out
1757 the 'p' symbol even if it never saves the argument onto
1760 On most machines, we want to preserve both symbols, so
1761 that we can still get information about what is going on
1762 with the stack (VAX for computing args_printed, using
1763 stack slots instead of saved registers in backtraces,
1766 Note that this code illegally combines
1767 main(argc) struct foo argc; { register struct foo argc; }
1768 but this case is considered pathological and causes a warning
1769 from a decent compiler. */
1772 && local_symbols->nsyms > 0
1773 #ifndef USE_REGISTER_NOT_ARG
1774 && gdbarch_stabs_argument_has_addr (current_gdbarch,
1779 struct symbol *prev_sym;
1780 prev_sym = local_symbols->symbol[local_symbols->nsyms - 1];
1781 if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG
1782 || SYMBOL_CLASS (prev_sym) == LOC_ARG)
1783 && STREQ (DEPRECATED_SYMBOL_NAME (prev_sym), DEPRECATED_SYMBOL_NAME (sym)))
1785 SYMBOL_CLASS (prev_sym) = LOC_REGPARM;
1786 /* Use the type from the LOC_REGISTER; that is the type
1787 that is actually in that register. */
1788 SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym);
1789 SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym);
1794 add_symbol_to_list (sym, &local_symbols);
1797 add_symbol_to_list (sym, &file_symbols);
1801 /* Static symbol at top level of file */
1802 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1803 SYMBOL_CLASS (sym) = LOC_STATIC;
1804 SYMBOL_VALUE_ADDRESS (sym) = valu;
1805 #ifdef STATIC_TRANSFORM_NAME
1806 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)))
1808 struct minimal_symbol *msym;
1809 msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile);
1812 DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym));
1813 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
1817 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1818 add_symbol_to_list (sym, &file_symbols);
1823 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1825 /* For a nameless type, we don't want a create a symbol, thus we
1826 did not use `sym'. Return without further processing. */
1830 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1831 SYMBOL_VALUE (sym) = valu;
1832 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1833 /* C++ vagaries: we may have a type which is derived from
1834 a base type which did not have its name defined when the
1835 derived class was output. We fill in the derived class's
1836 base part member's name here in that case. */
1837 if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL)
1838 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
1839 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)
1840 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)))
1843 for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--)
1844 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0)
1845 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) =
1846 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j));
1849 if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL)
1851 /* gcc-2.6 or later (when using -fvtable-thunks)
1852 emits a unique named type for a vtable entry.
1853 Some gdb code depends on that specific name. */
1854 extern const char vtbl_ptr_name[];
1856 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR
1857 && strcmp (DEPRECATED_SYMBOL_NAME (sym), vtbl_ptr_name))
1858 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC)
1860 /* If we are giving a name to a type such as "pointer to
1861 foo" or "function returning foo", we better not set
1862 the TYPE_NAME. If the program contains "typedef char
1863 *caddr_t;", we don't want all variables of type char
1864 * to print as caddr_t. This is not just a
1865 consequence of GDB's type management; PCC and GCC (at
1866 least through version 2.4) both output variables of
1867 either type char * or caddr_t with the type number
1868 defined in the 't' symbol for caddr_t. If a future
1869 compiler cleans this up it GDB is not ready for it
1870 yet, but if it becomes ready we somehow need to
1871 disable this check (without breaking the PCC/GCC2.4
1876 Fortunately, this check seems not to be necessary
1877 for anything except pointers or functions. */
1878 /* ezannoni: 2000-10-26. This seems to apply for
1879 versions of gcc older than 2.8. This was the original
1880 problem: with the following code gdb would tell that
1881 the type for name1 is caddr_t, and func is char()
1882 typedef char *caddr_t;
1894 /* Pascal accepts names for pointer types. */
1895 if (current_subfile->language == language_pascal)
1897 TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym);
1901 TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym);
1904 add_symbol_to_list (sym, &file_symbols);
1908 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1909 by 't' which means we are typedef'ing it as well. */
1910 synonym = *p == 't';
1914 #if 0 /* OBSOLETE CFront */
1915 // OBSOLETE /* The semantics of C++ state that "struct foo { ... }" also defines
1916 // OBSOLETE a typedef for "foo". Unfortunately, cfront never makes the typedef
1917 // OBSOLETE when translating C++ into C. We make the typedef here so that
1918 // OBSOLETE "ptype foo" works as expected for cfront translated code. */
1919 // OBSOLETE else if ((current_subfile->language == language_cplus)
1920 // OBSOLETE || (current_subfile->language == language_objc))
1921 // OBSOLETE synonym = 1;
1922 #endif /* OBSOLETE CFront */
1924 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1926 /* For a nameless type, we don't want a create a symbol, thus we
1927 did not use `sym'. Return without further processing. */
1931 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1932 SYMBOL_VALUE (sym) = valu;
1933 SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
1934 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0)
1935 TYPE_TAG_NAME (SYMBOL_TYPE (sym))
1936 = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym));
1937 add_symbol_to_list (sym, &file_symbols);
1941 /* Clone the sym and then modify it. */
1942 struct symbol *typedef_sym = (struct symbol *)
1943 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
1944 *typedef_sym = *sym;
1945 SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF;
1946 SYMBOL_VALUE (typedef_sym) = valu;
1947 SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN;
1948 if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
1949 TYPE_NAME (SYMBOL_TYPE (sym))
1950 = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym));
1951 add_symbol_to_list (typedef_sym, &file_symbols);
1956 /* Static symbol of local scope */
1957 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1958 SYMBOL_CLASS (sym) = LOC_STATIC;
1959 SYMBOL_VALUE_ADDRESS (sym) = valu;
1960 #ifdef STATIC_TRANSFORM_NAME
1961 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)))
1963 struct minimal_symbol *msym;
1964 msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile);
1967 DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym));
1968 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
1972 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1973 add_symbol_to_list (sym, &local_symbols);
1977 /* Reference parameter */
1978 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1979 SYMBOL_CLASS (sym) = LOC_REF_ARG;
1980 SYMBOL_VALUE (sym) = valu;
1981 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1982 add_symbol_to_list (sym, &local_symbols);
1986 /* Reference parameter which is in a register. */
1987 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1988 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
1989 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1990 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1992 reg_value_complaint (SYMBOL_VALUE (sym),
1993 NUM_REGS + NUM_PSEUDO_REGS,
1994 SYMBOL_PRINT_NAME (sym));
1995 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1997 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1998 add_symbol_to_list (sym, &local_symbols);
2002 /* This is used by Sun FORTRAN for "function result value".
2003 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
2004 that Pascal uses it too, but when I tried it Pascal used
2005 "x:3" (local symbol) instead. */
2006 SYMBOL_TYPE (sym) = read_type (&p, objfile);
2007 SYMBOL_CLASS (sym) = LOC_LOCAL;
2008 SYMBOL_VALUE (sym) = valu;
2009 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
2010 add_symbol_to_list (sym, &local_symbols);
2012 #if 0 /* OBSOLETE CFront */
2013 // OBSOLETE /* New code added to support cfront stabs strings.
2014 // OBSOLETE Note: case 'P' already handled above */
2015 // OBSOLETE case 'Z':
2016 // OBSOLETE /* Cfront type continuation coming up!
2017 // OBSOLETE Find the original definition and add to it.
2018 // OBSOLETE We'll have to do this for the typedef too,
2019 // OBSOLETE since we cloned the symbol to define a type in read_type.
2020 // OBSOLETE Stabs info examples:
2021 // OBSOLETE __1C :Ztl
2022 // OBSOLETE foo__1CFv :ZtF (first def foo__1CFv:F(0,3);(0,24))
2023 // OBSOLETE C:ZsC;;__ct__1CFv func1__1CFv func2__1CFv ... ;;;
2024 // OBSOLETE where C is the name of the class.
2025 // OBSOLETE Unfortunately, we can't lookup the original symbol yet 'cuz
2026 // OBSOLETE we haven't finished reading all the symbols.
2027 // OBSOLETE Instead, we save it for processing later */
2028 // OBSOLETE process_later (sym, p, resolve_cfront_continuation);
2029 // OBSOLETE SYMBOL_TYPE (sym) = error_type (&p, objfile); /* FIXME! change later */
2030 // OBSOLETE SYMBOL_CLASS (sym) = LOC_CONST;
2031 // OBSOLETE SYMBOL_VALUE (sym) = 0;
2032 // OBSOLETE SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
2033 // OBSOLETE /* Don't add to list - we'll delete it later when
2034 // OBSOLETE we add the continuation to the real sym */
2035 // OBSOLETE return sym;
2036 // OBSOLETE /* End of new code added to support cfront stabs strings */
2037 #endif /* OBSOLETE CFront */
2040 SYMBOL_TYPE (sym) = error_type (&p, objfile);
2041 SYMBOL_CLASS (sym) = LOC_CONST;
2042 SYMBOL_VALUE (sym) = 0;
2043 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
2044 add_symbol_to_list (sym, &file_symbols);
2048 /* Some systems pass variables of certain types by reference instead
2049 of by value, i.e. they will pass the address of a structure (in a
2050 register or on the stack) instead of the structure itself. */
2052 if (gdbarch_stabs_argument_has_addr (current_gdbarch, SYMBOL_TYPE (sym))
2053 && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG))
2055 /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for
2056 variables passed in a register). */
2057 if (SYMBOL_CLASS (sym) == LOC_REGPARM)
2058 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
2059 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
2060 and subsequent arguments on SPARC, for example). */
2061 else if (SYMBOL_CLASS (sym) == LOC_ARG)
2062 SYMBOL_CLASS (sym) = LOC_REF_ARG;
2065 /* Is there more to parse? For example LRS/alias information? */
2066 while (*p && *p == ';')
2069 if (*p && p[0] == 'l' && p[1] == '(')
2071 /* GNU extensions for live range splitting may be appended to
2072 the end of the stab string. eg. "l(#1,#2);l(#3,#5)" */
2074 /* Resolve the live range and add it to SYM's live range list. */
2075 if (!resolve_live_range (objfile, sym, p))
2078 /* Find end of live range info. */
2079 p = strchr (p, ')');
2080 if (!*p || *p != ')')
2082 lrs_general_complaint ("live range format not recognized");
2091 /* Add the live range found in P to the symbol SYM in objfile OBJFILE. Returns
2092 non-zero on success, zero otherwise. */
2095 resolve_live_range (struct objfile *objfile, struct symbol *sym, char *p)
2098 CORE_ADDR start, end;
2100 /* Sanity check the beginning of the stabs string. */
2101 if (!*p || *p != 'l')
2103 lrs_general_complaint ("live range string 1");
2108 if (!*p || *p != '(')
2110 lrs_general_complaint ("live range string 2");
2115 /* Get starting value of range and advance P past the reference id.
2117 ?!? In theory, the process_reference should never fail, but we should
2118 catch that case just in case the compiler scrogged the stabs. */
2119 refnum = process_reference (&p);
2120 start = ref_search_value (refnum);
2123 lrs_general_complaint ("Live range symbol not found 1");
2127 if (!*p || *p != ',')
2129 lrs_general_complaint ("live range string 3");
2134 /* Get ending value of range and advance P past the reference id.
2136 ?!? In theory, the process_reference should never fail, but we should
2137 catch that case just in case the compiler scrogged the stabs. */
2138 refnum = process_reference (&p);
2139 end = ref_search_value (refnum);
2142 lrs_general_complaint ("Live range symbol not found 2");
2146 if (!*p || *p != ')')
2148 lrs_general_complaint ("live range string 4");
2152 /* Now that we know the bounds of the range, add it to the
2154 add_live_range (objfile, sym, start, end);
2159 /* Add a new live range defined by START and END to the symbol SYM
2160 in objfile OBJFILE. */
2163 add_live_range (struct objfile *objfile, struct symbol *sym, CORE_ADDR start,
2166 struct range_list *r, *rs;
2170 lrs_general_complaint ("end of live range follows start");
2174 /* Alloc new live range structure. */
2175 r = (struct range_list *)
2176 obstack_alloc (&objfile->type_obstack,
2177 sizeof (struct range_list));
2182 /* Append this range to the symbol's range list. */
2183 if (!SYMBOL_RANGES (sym))
2184 SYMBOL_RANGES (sym) = r;
2187 /* Get the last range for the symbol. */
2188 for (rs = SYMBOL_RANGES (sym); rs->next; rs = rs->next)
2195 /* Skip rest of this symbol and return an error type.
2197 General notes on error recovery: error_type always skips to the
2198 end of the symbol (modulo cretinous dbx symbol name continuation).
2199 Thus code like this:
2201 if (*(*pp)++ != ';')
2202 return error_type (pp, objfile);
2204 is wrong because if *pp starts out pointing at '\0' (typically as the
2205 result of an earlier error), it will be incremented to point to the
2206 start of the next symbol, which might produce strange results, at least
2207 if you run off the end of the string table. Instead use
2210 return error_type (pp, objfile);
2216 foo = error_type (pp, objfile);
2220 And in case it isn't obvious, the point of all this hair is so the compiler
2221 can define new types and new syntaxes, and old versions of the
2222 debugger will be able to read the new symbol tables. */
2224 static struct type *
2225 error_type (char **pp, struct objfile *objfile)
2227 complaint (&symfile_complaints, "couldn't parse type; debugger out of date?");
2230 /* Skip to end of symbol. */
2231 while (**pp != '\0')
2236 /* Check for and handle cretinous dbx symbol name continuation! */
2237 if ((*pp)[-1] == '\\' || (*pp)[-1] == '?')
2239 *pp = next_symbol_text (objfile);
2246 return (builtin_type_error);
2250 /* Read type information or a type definition; return the type. Even
2251 though this routine accepts either type information or a type
2252 definition, the distinction is relevant--some parts of stabsread.c
2253 assume that type information starts with a digit, '-', or '(' in
2254 deciding whether to call read_type. */
2256 static struct type *
2257 read_type (char **pp, struct objfile *objfile)
2259 struct type *type = 0;
2262 char type_descriptor;
2264 /* Size in bits of type if specified by a type attribute, or -1 if
2265 there is no size attribute. */
2268 /* Used to distinguish string and bitstring from char-array and set. */
2271 /* Used to distinguish vector from array. */
2274 /* Read type number if present. The type number may be omitted.
2275 for instance in a two-dimensional array declared with type
2276 "ar1;1;10;ar1;1;10;4". */
2277 if ((**pp >= '0' && **pp <= '9')
2281 if (read_type_number (pp, typenums) != 0)
2282 return error_type (pp, objfile);
2284 /* Type is not being defined here. Either it already exists,
2285 or this is a forward reference to it. dbx_alloc_type handles
2288 return dbx_alloc_type (typenums, objfile);
2290 /* Type is being defined here. */
2292 Also skip the type descriptor - we get it below with (*pp)[-1]. */
2297 /* 'typenums=' not present, type is anonymous. Read and return
2298 the definition, but don't put it in the type vector. */
2299 typenums[0] = typenums[1] = -1;
2304 type_descriptor = (*pp)[-1];
2305 switch (type_descriptor)
2309 enum type_code code;
2311 /* Used to index through file_symbols. */
2312 struct pending *ppt;
2315 /* Name including "struct", etc. */
2319 char *from, *to, *p, *q1, *q2;
2321 /* Set the type code according to the following letter. */
2325 code = TYPE_CODE_STRUCT;
2328 code = TYPE_CODE_UNION;
2331 code = TYPE_CODE_ENUM;
2335 /* Complain and keep going, so compilers can invent new
2336 cross-reference types. */
2337 complaint (&symfile_complaints,
2338 "Unrecognized cross-reference type `%c'", (*pp)[0]);
2339 code = TYPE_CODE_STRUCT;
2344 q1 = strchr (*pp, '<');
2345 p = strchr (*pp, ':');
2347 return error_type (pp, objfile);
2348 if (q1 && p > q1 && p[1] == ':')
2350 int nesting_level = 0;
2351 for (q2 = q1; *q2; q2++)
2355 else if (*q2 == '>')
2357 else if (*q2 == ':' && nesting_level == 0)
2362 return error_type (pp, objfile);
2365 (char *) obstack_alloc (&objfile->type_obstack, p - *pp + 1);
2367 /* Copy the name. */
2373 /* Set the pointer ahead of the name which we just read, and
2378 /* Now check to see whether the type has already been
2379 declared. This was written for arrays of cross-referenced
2380 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
2381 sure it is not necessary anymore. But it might be a good
2382 idea, to save a little memory. */
2384 for (ppt = file_symbols; ppt; ppt = ppt->next)
2385 for (i = 0; i < ppt->nsyms; i++)
2387 struct symbol *sym = ppt->symbol[i];
2389 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
2390 && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
2391 && (TYPE_CODE (SYMBOL_TYPE (sym)) == code)
2392 && STREQ (DEPRECATED_SYMBOL_NAME (sym), type_name))
2394 obstack_free (&objfile->type_obstack, type_name);
2395 type = SYMBOL_TYPE (sym);
2400 /* Didn't find the type to which this refers, so we must
2401 be dealing with a forward reference. Allocate a type
2402 structure for it, and keep track of it so we can
2403 fill in the rest of the fields when we get the full
2405 type = dbx_alloc_type (typenums, objfile);
2406 TYPE_CODE (type) = code;
2407 TYPE_TAG_NAME (type) = type_name;
2408 INIT_CPLUS_SPECIFIC (type);
2409 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
2411 add_undefined_type (type);
2415 case '-': /* RS/6000 built-in type */
2429 /* We deal with something like t(1,2)=(3,4)=... which
2430 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
2432 /* Allocate and enter the typedef type first.
2433 This handles recursive types. */
2434 type = dbx_alloc_type (typenums, objfile);
2435 TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
2437 struct type *xtype = read_type (pp, objfile);
2440 /* It's being defined as itself. That means it is "void". */
2441 TYPE_CODE (type) = TYPE_CODE_VOID;
2442 TYPE_LENGTH (type) = 1;
2444 else if (type_size >= 0 || is_string)
2446 /* This is the absolute wrong way to construct types. Every
2447 other debug format has found a way around this problem and
2448 the related problems with unnecessarily stubbed types;
2449 someone motivated should attempt to clean up the issue
2450 here as well. Once a type pointed to has been created it
2451 should not be modified.
2453 Well, it's not *absolutely* wrong. Constructing recursive
2454 types (trees, linked lists) necessarily entails modifying
2455 types after creating them. Constructing any loop structure
2456 entails side effects. The Dwarf 2 reader does handle this
2457 more gracefully (it never constructs more than once
2458 instance of a type object, so it doesn't have to copy type
2459 objects wholesale), but it still mutates type objects after
2460 other folks have references to them.
2462 Keep in mind that this circularity/mutation issue shows up
2463 at the source language level, too: C's "incomplete types",
2464 for example. So the proper cleanup, I think, would be to
2465 limit GDB's type smashing to match exactly those required
2466 by the source language. So GDB could have a
2467 "complete_this_type" function, but never create unnecessary
2468 copies of a type otherwise. */
2469 replace_type (type, xtype);
2470 TYPE_NAME (type) = NULL;
2471 TYPE_TAG_NAME (type) = NULL;
2475 TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
2476 TYPE_TARGET_TYPE (type) = xtype;
2481 /* In the following types, we must be sure to overwrite any existing
2482 type that the typenums refer to, rather than allocating a new one
2483 and making the typenums point to the new one. This is because there
2484 may already be pointers to the existing type (if it had been
2485 forward-referenced), and we must change it to a pointer, function,
2486 reference, or whatever, *in-place*. */
2488 case '*': /* Pointer to another type */
2489 type1 = read_type (pp, objfile);
2490 type = make_pointer_type (type1, dbx_lookup_type (typenums));
2493 case '&': /* Reference to another type */
2494 type1 = read_type (pp, objfile);
2495 type = make_reference_type (type1, dbx_lookup_type (typenums));
2498 case 'f': /* Function returning another type */
2499 type1 = read_type (pp, objfile);
2500 type = make_function_type (type1, dbx_lookup_type (typenums));
2503 case 'g': /* Prototyped function. (Sun) */
2505 /* Unresolved questions:
2507 - According to Sun's ``STABS Interface Manual'', for 'f'
2508 and 'F' symbol descriptors, a `0' in the argument type list
2509 indicates a varargs function. But it doesn't say how 'g'
2510 type descriptors represent that info. Someone with access
2511 to Sun's toolchain should try it out.
2513 - According to the comment in define_symbol (search for
2514 `process_prototype_types:'), Sun emits integer arguments as
2515 types which ref themselves --- like `void' types. Do we
2516 have to deal with that here, too? Again, someone with
2517 access to Sun's toolchain should try it out and let us
2520 const char *type_start = (*pp) - 1;
2521 struct type *return_type = read_type (pp, objfile);
2522 struct type *func_type
2523 = make_function_type (return_type, dbx_lookup_type (typenums));
2526 struct type_list *next;
2530 while (**pp && **pp != '#')
2532 struct type *arg_type = read_type (pp, objfile);
2533 struct type_list *new = alloca (sizeof (*new));
2534 new->type = arg_type;
2535 new->next = arg_types;
2543 complaint (&symfile_complaints,
2544 "Prototyped function type didn't end arguments with `#':\n%s",
2548 /* If there is just one argument whose type is `void', then
2549 that's just an empty argument list. */
2551 && ! arg_types->next
2552 && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID)
2555 TYPE_FIELDS (func_type)
2556 = (struct field *) TYPE_ALLOC (func_type,
2557 num_args * sizeof (struct field));
2558 memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field));
2561 struct type_list *t;
2563 /* We stuck each argument type onto the front of the list
2564 when we read it, so the list is reversed. Build the
2565 fields array right-to-left. */
2566 for (t = arg_types, i = num_args - 1; t; t = t->next, i--)
2567 TYPE_FIELD_TYPE (func_type, i) = t->type;
2569 TYPE_NFIELDS (func_type) = num_args;
2570 TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED;
2576 case 'k': /* Const qualifier on some type (Sun) */
2577 type = read_type (pp, objfile);
2578 type = make_cv_type (1, TYPE_VOLATILE (type), type,
2579 dbx_lookup_type (typenums));
2582 case 'B': /* Volatile qual on some type (Sun) */
2583 type = read_type (pp, objfile);
2584 type = make_cv_type (TYPE_CONST (type), 1, type,
2585 dbx_lookup_type (typenums));
2589 if (isdigit (**pp) || **pp == '(' || **pp == '-')
2590 { /* Member (class & variable) type */
2591 /* FIXME -- we should be doing smash_to_XXX types here. */
2593 struct type *domain = read_type (pp, objfile);
2594 struct type *memtype;
2597 /* Invalid member type data format. */
2598 return error_type (pp, objfile);
2601 memtype = read_type (pp, objfile);
2602 type = dbx_alloc_type (typenums, objfile);
2603 smash_to_member_type (type, domain, memtype);
2606 /* type attribute */
2609 /* Skip to the semicolon. */
2610 while (**pp != ';' && **pp != '\0')
2613 return error_type (pp, objfile);
2615 ++ * pp; /* Skip the semicolon. */
2619 case 's': /* Size attribute */
2620 type_size = atoi (attr + 1);
2625 case 'S': /* String attribute */
2626 /* FIXME: check to see if following type is array? */
2630 case 'V': /* Vector attribute */
2631 /* FIXME: check to see if following type is array? */
2636 /* Ignore unrecognized type attributes, so future compilers
2637 can invent new ones. */
2645 case '#': /* Method (class & fn) type */
2646 if ((*pp)[0] == '#')
2648 /* We'll get the parameter types from the name. */
2649 struct type *return_type;
2652 return_type = read_type (pp, objfile);
2653 if (*(*pp)++ != ';')
2654 complaint (&symfile_complaints,
2655 "invalid (minimal) member type data format at symtab pos %d.",
2657 type = allocate_stub_method (return_type);
2658 if (typenums[0] != -1)
2659 *dbx_lookup_type (typenums) = type;
2663 struct type *domain = read_type (pp, objfile);
2664 struct type *return_type;
2669 /* Invalid member type data format. */
2670 return error_type (pp, objfile);
2674 return_type = read_type (pp, objfile);
2675 args = read_args (pp, ';', objfile, &nargs, &varargs);
2676 type = dbx_alloc_type (typenums, objfile);
2677 smash_to_method_type (type, domain, return_type, args,
2682 case 'r': /* Range type */
2683 type = read_range_type (pp, typenums, objfile);
2684 if (typenums[0] != -1)
2685 *dbx_lookup_type (typenums) = type;
2690 /* Sun ACC builtin int type */
2691 type = read_sun_builtin_type (pp, typenums, objfile);
2692 if (typenums[0] != -1)
2693 *dbx_lookup_type (typenums) = type;
2697 case 'R': /* Sun ACC builtin float type */
2698 type = read_sun_floating_type (pp, typenums, objfile);
2699 if (typenums[0] != -1)
2700 *dbx_lookup_type (typenums) = type;
2703 case 'e': /* Enumeration type */
2704 type = dbx_alloc_type (typenums, objfile);
2705 type = read_enum_type (pp, type, objfile);
2706 if (typenums[0] != -1)
2707 *dbx_lookup_type (typenums) = type;
2710 case 's': /* Struct type */
2711 case 'u': /* Union type */
2713 enum type_code type_code = TYPE_CODE_UNDEF;
2714 type = dbx_alloc_type (typenums, objfile);
2715 switch (type_descriptor)
2718 type_code = TYPE_CODE_STRUCT;
2721 type_code = TYPE_CODE_UNION;
2724 type = read_struct_type (pp, type, type_code, objfile);
2728 case 'a': /* Array type */
2730 return error_type (pp, objfile);
2733 type = dbx_alloc_type (typenums, objfile);
2734 type = read_array_type (pp, type, objfile);
2736 TYPE_CODE (type) = TYPE_CODE_STRING;
2738 TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;
2741 case 'S': /* Set or bitstring type */
2742 type1 = read_type (pp, objfile);
2743 type = create_set_type ((struct type *) NULL, type1);
2745 TYPE_CODE (type) = TYPE_CODE_BITSTRING;
2746 if (typenums[0] != -1)
2747 *dbx_lookup_type (typenums) = type;
2751 --*pp; /* Go back to the symbol in error */
2752 /* Particularly important if it was \0! */
2753 return error_type (pp, objfile);
2758 warning ("GDB internal error, type is NULL in stabsread.c\n");
2759 return error_type (pp, objfile);
2762 /* Size specified in a type attribute overrides any other size. */
2763 if (type_size != -1)
2764 TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2769 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
2770 Return the proper type node for a given builtin type number. */
2772 static struct type *
2773 rs6000_builtin_type (int typenum)
2775 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
2776 #define NUMBER_RECOGNIZED 34
2777 /* This includes an empty slot for type number -0. */
2778 static struct type *negative_types[NUMBER_RECOGNIZED + 1];
2779 struct type *rettype = NULL;
2781 if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED)
2783 complaint (&symfile_complaints, "Unknown builtin type %d", typenum);
2784 return builtin_type_error;
2786 if (negative_types[-typenum] != NULL)
2787 return negative_types[-typenum];
2789 #if TARGET_CHAR_BIT != 8
2790 #error This code wrong for TARGET_CHAR_BIT not 8
2791 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
2792 that if that ever becomes not true, the correct fix will be to
2793 make the size in the struct type to be in bits, not in units of
2800 /* The size of this and all the other types are fixed, defined
2801 by the debugging format. If there is a type called "int" which
2802 is other than 32 bits, then it should use a new negative type
2803 number (or avoid negative type numbers for that case).
2804 See stabs.texinfo. */
2805 rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
2808 rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL);
2811 rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
2814 rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL);
2817 rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED,
2818 "unsigned char", NULL);
2821 rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL);
2824 rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED,
2825 "unsigned short", NULL);
2828 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2829 "unsigned int", NULL);
2832 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2835 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2836 "unsigned long", NULL);
2839 rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
2842 /* IEEE single precision (32 bit). */
2843 rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
2846 /* IEEE double precision (64 bit). */
2847 rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
2850 /* This is an IEEE double on the RS/6000, and different machines with
2851 different sizes for "long double" should use different negative
2852 type numbers. See stabs.texinfo. */
2853 rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL);
2856 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL);
2859 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2863 rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL);
2866 rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL);
2869 rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL);
2872 rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED,
2876 rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED,
2880 rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED,
2884 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2888 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2892 /* Complex type consisting of two IEEE single precision values. */
2893 rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL);
2894 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float",
2898 /* Complex type consisting of two IEEE double precision values. */
2899 rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL);
2900 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double",
2904 rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL);
2907 rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL);
2910 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL);
2913 rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL);
2916 rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL);
2919 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2920 "unsigned long long", NULL);
2923 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2927 rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL);
2930 negative_types[-typenum] = rettype;
2934 /* This page contains subroutines of read_type. */
2936 /* Replace *OLD_NAME with the method name portion of PHYSNAME. */
2939 update_method_name_from_physname (char **old_name, char *physname)
2943 method_name = method_name_from_physname (physname);
2945 if (method_name == NULL)
2947 complaint (&symfile_complaints,
2948 "Method has bad physname %s\n", physname);
2952 if (strcmp (*old_name, method_name) != 0)
2955 *old_name = method_name;
2958 xfree (method_name);
2961 /* Read member function stabs info for C++ classes. The form of each member
2964 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2966 An example with two member functions is:
2968 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2970 For the case of overloaded operators, the format is op$::*.funcs, where
2971 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2972 name (such as `+=') and `.' marks the end of the operator name.
2974 Returns 1 for success, 0 for failure. */
2977 read_member_functions (struct field_info *fip, char **pp, struct type *type,
2978 struct objfile *objfile)
2982 /* Total number of member functions defined in this class. If the class
2983 defines two `f' functions, and one `g' function, then this will have
2985 int total_length = 0;
2989 struct next_fnfield *next;
2990 struct fn_field fn_field;
2993 struct type *look_ahead_type;
2994 struct next_fnfieldlist *new_fnlist;
2995 struct next_fnfield *new_sublist;
2999 /* Process each list until we find something that is not a member function
3000 or find the end of the functions. */
3004 /* We should be positioned at the start of the function name.
3005 Scan forward to find the first ':' and if it is not the
3006 first of a "::" delimiter, then this is not a member function. */
3018 look_ahead_type = NULL;
3021 new_fnlist = (struct next_fnfieldlist *)
3022 xmalloc (sizeof (struct next_fnfieldlist));
3023 make_cleanup (xfree, new_fnlist);
3024 memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
3026 if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2]))
3028 /* This is a completely wierd case. In order to stuff in the
3029 names that might contain colons (the usual name delimiter),
3030 Mike Tiemann defined a different name format which is
3031 signalled if the identifier is "op$". In that case, the
3032 format is "op$::XXXX." where XXXX is the name. This is
3033 used for names like "+" or "=". YUUUUUUUK! FIXME! */
3034 /* This lets the user type "break operator+".
3035 We could just put in "+" as the name, but that wouldn't
3037 static char opname[32] = "op$";
3038 char *o = opname + 3;
3040 /* Skip past '::'. */
3043 STABS_CONTINUE (pp, objfile);
3049 main_fn_name = savestring (opname, o - opname);
3055 main_fn_name = savestring (*pp, p - *pp);
3056 /* Skip past '::'. */
3059 new_fnlist->fn_fieldlist.name = main_fn_name;
3064 (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
3065 make_cleanup (xfree, new_sublist);
3066 memset (new_sublist, 0, sizeof (struct next_fnfield));
3068 /* Check for and handle cretinous dbx symbol name continuation! */
3069 if (look_ahead_type == NULL)
3072 STABS_CONTINUE (pp, objfile);
3074 new_sublist->fn_field.type = read_type (pp, objfile);
3077 /* Invalid symtab info for member function. */
3083 /* g++ version 1 kludge */
3084 new_sublist->fn_field.type = look_ahead_type;
3085 look_ahead_type = NULL;
3095 /* If this is just a stub, then we don't have the real name here. */
3097 if (TYPE_STUB (new_sublist->fn_field.type))
3099 if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
3100 TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
3101 new_sublist->fn_field.is_stub = 1;
3103 new_sublist->fn_field.physname = savestring (*pp, p - *pp);
3106 /* Set this member function's visibility fields. */
3109 case VISIBILITY_PRIVATE:
3110 new_sublist->fn_field.is_private = 1;
3112 case VISIBILITY_PROTECTED:
3113 new_sublist->fn_field.is_protected = 1;
3117 STABS_CONTINUE (pp, objfile);
3120 case 'A': /* Normal functions. */
3121 new_sublist->fn_field.is_const = 0;
3122 new_sublist->fn_field.is_volatile = 0;
3125 case 'B': /* `const' member functions. */
3126 new_sublist->fn_field.is_const = 1;
3127 new_sublist->fn_field.is_volatile = 0;
3130 case 'C': /* `volatile' member function. */
3131 new_sublist->fn_field.is_const = 0;
3132 new_sublist->fn_field.is_volatile = 1;
3135 case 'D': /* `const volatile' member function. */
3136 new_sublist->fn_field.is_const = 1;
3137 new_sublist->fn_field.is_volatile = 1;
3140 case '*': /* File compiled with g++ version 1 -- no info */
3145 complaint (&symfile_complaints,
3146 "const/volatile indicator missing, got '%c'", **pp);
3155 /* virtual member function, followed by index.
3156 The sign bit is set to distinguish pointers-to-methods
3157 from virtual function indicies. Since the array is
3158 in words, the quantity must be shifted left by 1
3159 on 16 bit machine, and by 2 on 32 bit machine, forcing
3160 the sign bit out, and usable as a valid index into
3161 the array. Remove the sign bit here. */
3162 new_sublist->fn_field.voffset =
3163 (0x7fffffff & read_huge_number (pp, ';', &nbits)) + 2;
3167 STABS_CONTINUE (pp, objfile);
3168 if (**pp == ';' || **pp == '\0')
3170 /* Must be g++ version 1. */
3171 new_sublist->fn_field.fcontext = 0;
3175 /* Figure out from whence this virtual function came.
3176 It may belong to virtual function table of
3177 one of its baseclasses. */
3178 look_ahead_type = read_type (pp, objfile);
3181 /* g++ version 1 overloaded methods. */
3185 new_sublist->fn_field.fcontext = look_ahead_type;
3194 look_ahead_type = NULL;
3200 /* static member function. */
3202 int slen = strlen (main_fn_name);
3204 new_sublist->fn_field.voffset = VOFFSET_STATIC;
3206 /* For static member functions, we can't tell if they
3207 are stubbed, as they are put out as functions, and not as
3209 GCC v2 emits the fully mangled name if
3210 dbxout.c:flag_minimal_debug is not set, so we have to
3211 detect a fully mangled physname here and set is_stub
3212 accordingly. Fully mangled physnames in v2 start with
3213 the member function name, followed by two underscores.
3214 GCC v3 currently always emits stubbed member functions,
3215 but with fully mangled physnames, which start with _Z. */
3216 if (!(strncmp (new_sublist->fn_field.physname,
3217 main_fn_name, slen) == 0
3218 && new_sublist->fn_field.physname[slen] == '_'
3219 && new_sublist->fn_field.physname[slen + 1] == '_'))
3221 new_sublist->fn_field.is_stub = 1;
3228 complaint (&symfile_complaints,
3229 "member function type missing, got '%c'", (*pp)[-1]);
3230 /* Fall through into normal member function. */
3233 /* normal member function. */
3234 new_sublist->fn_field.voffset = 0;
3235 new_sublist->fn_field.fcontext = 0;
3239 new_sublist->next = sublist;
3240 sublist = new_sublist;
3242 STABS_CONTINUE (pp, objfile);
3244 while (**pp != ';' && **pp != '\0');
3247 STABS_CONTINUE (pp, objfile);
3249 /* Skip GCC 3.X member functions which are duplicates of the callable
3250 constructor/destructor. */
3251 if (strcmp (main_fn_name, "__base_ctor") == 0
3252 || strcmp (main_fn_name, "__base_dtor") == 0
3253 || strcmp (main_fn_name, "__deleting_dtor") == 0)
3255 xfree (main_fn_name);
3260 int has_destructor = 0, has_other = 0;
3262 struct next_fnfield *tmp_sublist;
3264 /* Various versions of GCC emit various mostly-useless
3265 strings in the name field for special member functions.
3267 For stub methods, we need to defer correcting the name
3268 until we are ready to unstub the method, because the current
3269 name string is used by gdb_mangle_name. The only stub methods
3270 of concern here are GNU v2 operators; other methods have their
3271 names correct (see caveat below).
3273 For non-stub methods, in GNU v3, we have a complete physname.
3274 Therefore we can safely correct the name now. This primarily
3275 affects constructors and destructors, whose name will be
3276 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
3277 operators will also have incorrect names; for instance,
3278 "operator int" will be named "operator i" (i.e. the type is
3281 For non-stub methods in GNU v2, we have no easy way to
3282 know if we have a complete physname or not. For most
3283 methods the result depends on the platform (if CPLUS_MARKER
3284 can be `$' or `.', it will use minimal debug information, or
3285 otherwise the full physname will be included).
3287 Rather than dealing with this, we take a different approach.
3288 For v3 mangled names, we can use the full physname; for v2,
3289 we use cplus_demangle_opname (which is actually v2 specific),
3290 because the only interesting names are all operators - once again
3291 barring the caveat below. Skip this process if any method in the
3292 group is a stub, to prevent our fouling up the workings of
3295 The caveat: GCC 2.95.x (and earlier?) put constructors and
3296 destructors in the same method group. We need to split this
3297 into two groups, because they should have different names.
3298 So for each method group we check whether it contains both
3299 routines whose physname appears to be a destructor (the physnames
3300 for and destructors are always provided, due to quirks in v2
3301 mangling) and routines whose physname does not appear to be a
3302 destructor. If so then we break up the list into two halves.
3303 Even if the constructors and destructors aren't in the same group
3304 the destructor will still lack the leading tilde, so that also
3307 So, to summarize what we expect and handle here:
3309 Given Given Real Real Action
3310 method name physname physname method name
3312 __opi [none] __opi__3Foo operator int opname
3314 Foo _._3Foo _._3Foo ~Foo separate and
3316 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
3317 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
3320 tmp_sublist = sublist;
3321 while (tmp_sublist != NULL)
3323 if (tmp_sublist->fn_field.is_stub)
3325 if (tmp_sublist->fn_field.physname[0] == '_'
3326 && tmp_sublist->fn_field.physname[1] == 'Z')
3329 if (is_destructor_name (tmp_sublist->fn_field.physname))
3334 tmp_sublist = tmp_sublist->next;
3337 if (has_destructor && has_other)
3339 struct next_fnfieldlist *destr_fnlist;
3340 struct next_fnfield *last_sublist;
3342 /* Create a new fn_fieldlist for the destructors. */
3344 destr_fnlist = (struct next_fnfieldlist *)
3345 xmalloc (sizeof (struct next_fnfieldlist));
3346 make_cleanup (xfree, destr_fnlist);
3347 memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist));
3348 destr_fnlist->fn_fieldlist.name
3349 = obconcat (&objfile->type_obstack, "", "~",
3350 new_fnlist->fn_fieldlist.name);
3352 destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
3353 obstack_alloc (&objfile->type_obstack,
3354 sizeof (struct fn_field) * has_destructor);
3355 memset (destr_fnlist->fn_fieldlist.fn_fields, 0,
3356 sizeof (struct fn_field) * has_destructor);
3357 tmp_sublist = sublist;
3358 last_sublist = NULL;
3360 while (tmp_sublist != NULL)
3362 if (!is_destructor_name (tmp_sublist->fn_field.physname))
3364 tmp_sublist = tmp_sublist->next;
3368 destr_fnlist->fn_fieldlist.fn_fields[i++]
3369 = tmp_sublist->fn_field;
3371 last_sublist->next = tmp_sublist->next;
3373 sublist = tmp_sublist->next;
3374 last_sublist = tmp_sublist;
3375 tmp_sublist = tmp_sublist->next;
3378 destr_fnlist->fn_fieldlist.length = has_destructor;
3379 destr_fnlist->next = fip->fnlist;
3380 fip->fnlist = destr_fnlist;
3382 total_length += has_destructor;
3383 length -= has_destructor;
3387 /* v3 mangling prevents the use of abbreviated physnames,
3388 so we can do this here. There are stubbed methods in v3
3390 - in -gstabs instead of -gstabs+
3391 - or for static methods, which are output as a function type
3392 instead of a method type. */
3394 update_method_name_from_physname (&new_fnlist->fn_fieldlist.name,
3395 sublist->fn_field.physname);
3397 else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~')
3399 new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL);
3400 xfree (main_fn_name);
3404 char dem_opname[256];
3406 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
3407 dem_opname, DMGL_ANSI);
3409 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
3412 new_fnlist->fn_fieldlist.name
3413 = obsavestring (dem_opname, strlen (dem_opname),
3414 &objfile->type_obstack);
3417 new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
3418 obstack_alloc (&objfile->type_obstack,
3419 sizeof (struct fn_field) * length);
3420 memset (new_fnlist->fn_fieldlist.fn_fields, 0,
3421 sizeof (struct fn_field) * length);
3422 for (i = length; (i--, sublist); sublist = sublist->next)
3424 new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
3427 new_fnlist->fn_fieldlist.length = length;
3428 new_fnlist->next = fip->fnlist;
3429 fip->fnlist = new_fnlist;
3431 total_length += length;
3437 ALLOCATE_CPLUS_STRUCT_TYPE (type);
3438 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
3439 TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields);
3440 memset (TYPE_FN_FIELDLISTS (type), 0,
3441 sizeof (struct fn_fieldlist) * nfn_fields);
3442 TYPE_NFN_FIELDS (type) = nfn_fields;
3443 TYPE_NFN_FIELDS_TOTAL (type) = total_length;
3449 /* Special GNU C++ name.
3451 Returns 1 for success, 0 for failure. "failure" means that we can't
3452 keep parsing and it's time for error_type(). */
3455 read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type,
3456 struct objfile *objfile)
3461 struct type *context;
3471 /* At this point, *pp points to something like "22:23=*22...",
3472 where the type number before the ':' is the "context" and
3473 everything after is a regular type definition. Lookup the
3474 type, find it's name, and construct the field name. */
3476 context = read_type (pp, objfile);
3480 case 'f': /* $vf -- a virtual function table pointer */
3481 name = type_name_no_tag (context);
3486 fip->list->field.name =
3487 obconcat (&objfile->type_obstack, vptr_name, name, "");
3490 case 'b': /* $vb -- a virtual bsomethingorother */
3491 name = type_name_no_tag (context);
3494 complaint (&symfile_complaints,
3495 "C++ abbreviated type name unknown at symtab pos %d",
3499 fip->list->field.name =
3500 obconcat (&objfile->type_obstack, vb_name, name, "");
3504 invalid_cpp_abbrev_complaint (*pp);
3505 fip->list->field.name =
3506 obconcat (&objfile->type_obstack,
3507 "INVALID_CPLUSPLUS_ABBREV", "", "");
3511 /* At this point, *pp points to the ':'. Skip it and read the
3517 invalid_cpp_abbrev_complaint (*pp);
3520 fip->list->field.type = read_type (pp, objfile);
3522 (*pp)++; /* Skip the comma. */
3528 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits);
3532 /* This field is unpacked. */
3533 FIELD_BITSIZE (fip->list->field) = 0;
3534 fip->list->visibility = VISIBILITY_PRIVATE;
3538 invalid_cpp_abbrev_complaint (*pp);
3539 /* We have no idea what syntax an unrecognized abbrev would have, so
3540 better return 0. If we returned 1, we would need to at least advance
3541 *pp to avoid an infinite loop. */
3548 read_one_struct_field (struct field_info *fip, char **pp, char *p,
3549 struct type *type, struct objfile *objfile)
3551 #if 0 /* OBSOLETE CFront */
3552 // OBSOLETE /* The following is code to work around cfront generated stabs.
3553 // OBSOLETE The stabs contains full mangled name for each field.
3554 // OBSOLETE We try to demangle the name and extract the field name out of it.
3556 // OBSOLETE if (ARM_DEMANGLING && current_subfile->language == language_cplus)
3558 // OBSOLETE char save_p;
3559 // OBSOLETE char *dem, *dem_p;
3560 // OBSOLETE save_p = *p;
3561 // OBSOLETE *p = '\0';
3562 // OBSOLETE dem = cplus_demangle (*pp, DMGL_ANSI | DMGL_PARAMS);
3563 // OBSOLETE if (dem != NULL)
3565 // OBSOLETE dem_p = strrchr (dem, ':');
3566 // OBSOLETE if (dem_p != 0 && *(dem_p - 1) == ':')
3567 // OBSOLETE dem_p++;
3568 // OBSOLETE FIELD_NAME (fip->list->field) =
3569 // OBSOLETE obsavestring (dem_p, strlen (dem_p), &objfile->type_obstack);
3573 // OBSOLETE FIELD_NAME (fip->list->field) =
3574 // OBSOLETE obsavestring (*pp, p - *pp, &objfile->type_obstack);
3576 // OBSOLETE *p = save_p;
3578 // OBSOLETE /* end of code for cfront work around */
3581 #endif /* OBSOLETE CFront */
3582 fip->list->field.name =
3583 obsavestring (*pp, p - *pp, &objfile->type_obstack);
3586 /* This means we have a visibility for a field coming. */
3590 fip->list->visibility = *(*pp)++;
3594 /* normal dbx-style format, no explicit visibility */
3595 fip->list->visibility = VISIBILITY_PUBLIC;
3598 fip->list->field.type = read_type (pp, objfile);
3603 /* Possible future hook for nested types. */
3606 fip->list->field.bitpos = (long) -2; /* nested type */
3616 /* Static class member. */
3617 SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp));
3621 else if (**pp != ',')
3623 /* Bad structure-type format. */
3624 stabs_general_complaint ("bad structure-type format");
3628 (*pp)++; /* Skip the comma. */
3632 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits);
3635 stabs_general_complaint ("bad structure-type format");
3638 FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits);
3641 stabs_general_complaint ("bad structure-type format");
3646 if (FIELD_BITPOS (fip->list->field) == 0
3647 && FIELD_BITSIZE (fip->list->field) == 0)
3649 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
3650 it is a field which has been optimized out. The correct stab for
3651 this case is to use VISIBILITY_IGNORE, but that is a recent
3652 invention. (2) It is a 0-size array. For example
3653 union { int num; char str[0]; } foo. Printing "<no value>" for
3654 str in "p foo" is OK, since foo.str (and thus foo.str[3])
3655 will continue to work, and a 0-size array as a whole doesn't
3656 have any contents to print.
3658 I suspect this probably could also happen with gcc -gstabs (not
3659 -gstabs+) for static fields, and perhaps other C++ extensions.
3660 Hopefully few people use -gstabs with gdb, since it is intended
3661 for dbx compatibility. */
3663 /* Ignore this field. */
3664 fip->list->visibility = VISIBILITY_IGNORE;
3668 /* Detect an unpacked field and mark it as such.
3669 dbx gives a bit size for all fields.
3670 Note that forward refs cannot be packed,
3671 and treat enums as if they had the width of ints. */
3673 struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field));
3675 if (TYPE_CODE (field_type) != TYPE_CODE_INT
3676 && TYPE_CODE (field_type) != TYPE_CODE_RANGE
3677 && TYPE_CODE (field_type) != TYPE_CODE_BOOL
3678 && TYPE_CODE (field_type) != TYPE_CODE_ENUM)
3680 FIELD_BITSIZE (fip->list->field) = 0;
3682 if ((FIELD_BITSIZE (fip->list->field)
3683 == TARGET_CHAR_BIT * TYPE_LENGTH (field_type)
3684 || (TYPE_CODE (field_type) == TYPE_CODE_ENUM
3685 && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT)
3688 FIELD_BITPOS (fip->list->field) % 8 == 0)
3690 FIELD_BITSIZE (fip->list->field) = 0;
3696 /* Read struct or class data fields. They have the form:
3698 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
3700 At the end, we see a semicolon instead of a field.
3702 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
3705 The optional VISIBILITY is one of:
3707 '/0' (VISIBILITY_PRIVATE)
3708 '/1' (VISIBILITY_PROTECTED)
3709 '/2' (VISIBILITY_PUBLIC)
3710 '/9' (VISIBILITY_IGNORE)
3712 or nothing, for C style fields with public visibility.
3714 Returns 1 for success, 0 for failure. */
3717 read_struct_fields (struct field_info *fip, char **pp, struct type *type,
3718 struct objfile *objfile)
3721 struct nextfield *new;
3723 /* We better set p right now, in case there are no fields at all... */
3727 /* Read each data member type until we find the terminating ';' at the end of
3728 the data member list, or break for some other reason such as finding the
3729 start of the member function list. */
3730 /* Stab string for structure/union does not end with two ';' in
3731 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
3733 while (**pp != ';' && **pp != '\0')
3735 STABS_CONTINUE (pp, objfile);
3736 /* Get space to record the next field's data. */
3737 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
3738 make_cleanup (xfree, new);
3739 memset (new, 0, sizeof (struct nextfield));
3740 new->next = fip->list;
3743 /* Get the field name. */
3746 /* If is starts with CPLUS_MARKER it is a special abbreviation,
3747 unless the CPLUS_MARKER is followed by an underscore, in
3748 which case it is just the name of an anonymous type, which we
3749 should handle like any other type name. */
3751 if (is_cplus_marker (p[0]) && p[1] != '_')
3753 if (!read_cpp_abbrev (fip, pp, type, objfile))
3758 /* Look for the ':' that separates the field name from the field
3759 values. Data members are delimited by a single ':', while member
3760 functions are delimited by a pair of ':'s. When we hit the member
3761 functions (if any), terminate scan loop and return. */
3763 while (*p != ':' && *p != '\0')
3770 /* Check to see if we have hit the member functions yet. */
3775 read_one_struct_field (fip, pp, p, type, objfile);
3777 if (p[0] == ':' && p[1] == ':')
3779 /* (the deleted) chill the list of fields: the last entry (at
3780 the head) is a partially constructed entry which we now
3782 fip->list = fip->list->next;
3787 /* The stabs for C++ derived classes contain baseclass information which
3788 is marked by a '!' character after the total size. This function is
3789 called when we encounter the baseclass marker, and slurps up all the
3790 baseclass information.
3792 Immediately following the '!' marker is the number of base classes that
3793 the class is derived from, followed by information for each base class.
3794 For each base class, there are two visibility specifiers, a bit offset
3795 to the base class information within the derived class, a reference to
3796 the type for the base class, and a terminating semicolon.
3798 A typical example, with two base classes, would be "!2,020,19;0264,21;".
3800 Baseclass information marker __________________|| | | | | | |
3801 Number of baseclasses __________________________| | | | | | |
3802 Visibility specifiers (2) ________________________| | | | | |
3803 Offset in bits from start of class _________________| | | | |
3804 Type number for base class ___________________________| | | |
3805 Visibility specifiers (2) _______________________________| | |
3806 Offset in bits from start of class ________________________| |
3807 Type number of base class ____________________________________|
3809 Return 1 for success, 0 for (error-type-inducing) failure. */
3815 read_baseclasses (struct field_info *fip, char **pp, struct type *type,
3816 struct objfile *objfile)
3819 struct nextfield *new;
3827 /* Skip the '!' baseclass information marker. */
3831 ALLOCATE_CPLUS_STRUCT_TYPE (type);
3834 TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits);
3840 /* Some stupid compilers have trouble with the following, so break
3841 it up into simpler expressions. */
3842 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
3843 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
3846 int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
3849 pointer = (char *) TYPE_ALLOC (type, num_bytes);
3850 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
3854 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
3856 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
3858 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
3859 make_cleanup (xfree, new);
3860 memset (new, 0, sizeof (struct nextfield));
3861 new->next = fip->list;
3863 FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */
3865 STABS_CONTINUE (pp, objfile);
3869 /* Nothing to do. */
3872 SET_TYPE_FIELD_VIRTUAL (type, i);
3875 /* Unknown character. Complain and treat it as non-virtual. */
3877 complaint (&symfile_complaints,
3878 "Unknown virtual character `%c' for baseclass", **pp);
3883 new->visibility = *(*pp)++;
3884 switch (new->visibility)
3886 case VISIBILITY_PRIVATE:
3887 case VISIBILITY_PROTECTED:
3888 case VISIBILITY_PUBLIC:
3891 /* Bad visibility format. Complain and treat it as
3894 complaint (&symfile_complaints,
3895 "Unknown visibility `%c' for baseclass",
3897 new->visibility = VISIBILITY_PUBLIC;
3904 /* The remaining value is the bit offset of the portion of the object
3905 corresponding to this baseclass. Always zero in the absence of
3906 multiple inheritance. */
3908 FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits);
3913 /* The last piece of baseclass information is the type of the
3914 base class. Read it, and remember it's type name as this
3917 new->field.type = read_type (pp, objfile);
3918 new->field.name = type_name_no_tag (new->field.type);
3920 /* skip trailing ';' and bump count of number of fields seen */
3929 /* The tail end of stabs for C++ classes that contain a virtual function
3930 pointer contains a tilde, a %, and a type number.
3931 The type number refers to the base class (possibly this class itself) which
3932 contains the vtable pointer for the current class.
3934 This function is called when we have parsed all the method declarations,
3935 so we can look for the vptr base class info. */
3938 read_tilde_fields (struct field_info *fip, char **pp, struct type *type,
3939 struct objfile *objfile)
3943 STABS_CONTINUE (pp, objfile);
3945 /* If we are positioned at a ';', then skip it. */
3955 if (**pp == '=' || **pp == '+' || **pp == '-')
3957 /* Obsolete flags that used to indicate the presence
3958 of constructors and/or destructors. */
3962 /* Read either a '%' or the final ';'. */
3963 if (*(*pp)++ == '%')
3965 /* The next number is the type number of the base class
3966 (possibly our own class) which supplies the vtable for
3967 this class. Parse it out, and search that class to find
3968 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3969 and TYPE_VPTR_FIELDNO. */
3974 t = read_type (pp, objfile);
3976 while (*p != '\0' && *p != ';')
3982 /* Premature end of symbol. */
3986 TYPE_VPTR_BASETYPE (type) = t;
3987 if (type == t) /* Our own class provides vtbl ptr */
3989 for (i = TYPE_NFIELDS (t) - 1;
3990 i >= TYPE_N_BASECLASSES (t);
3993 char *name = TYPE_FIELD_NAME (t, i);
3994 if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2)
3995 && is_cplus_marker (name[sizeof (vptr_name) - 2]))
3997 TYPE_VPTR_FIELDNO (type) = i;
4001 /* Virtual function table field not found. */
4002 complaint (&symfile_complaints,
4003 "virtual function table pointer not found when defining class `%s'",
4009 TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
4020 attach_fn_fields_to_type (struct field_info *fip, struct type *type)
4024 for (n = TYPE_NFN_FIELDS (type);
4025 fip->fnlist != NULL;
4026 fip->fnlist = fip->fnlist->next)
4028 --n; /* Circumvent Sun3 compiler bug */
4029 TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist;
4034 #if 0 /* OBSOLETE CFront */
4035 // OBSOLETE /* read cfront class static data.
4036 // OBSOLETE pp points to string starting with the list of static data
4037 // OBSOLETE eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
4038 // OBSOLETE ^^^^^^^^
4040 // OBSOLETE A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
4044 // OBSOLETE static int
4045 // OBSOLETE read_cfront_static_fields (struct field_info *fip, char **pp, struct type *type,
4046 // OBSOLETE struct objfile *objfile)
4048 // OBSOLETE struct nextfield *new;
4049 // OBSOLETE struct type *stype;
4050 // OBSOLETE char *sname;
4051 // OBSOLETE struct symbol *ref_static = 0;
4053 // OBSOLETE if (**pp == ';') /* no static data; return */
4055 // OBSOLETE ++(*pp);
4056 // OBSOLETE return 1;
4059 // OBSOLETE /* Process each field in the list until we find the terminating ";" */
4061 // OBSOLETE /* eg: p = "as__1A ;;;" */
4062 // OBSOLETE STABS_CONTINUE (pp, objfile); /* handle \\ */
4063 // OBSOLETE while (**pp != ';' && (sname = get_substring (pp, ' '), sname))
4065 // OBSOLETE ref_static = lookup_symbol (sname, 0, VAR_DOMAIN, 0, 0); /*demangled_name */
4066 // OBSOLETE if (!ref_static)
4068 // OBSOLETE complaint (&symfile_complaints,
4069 // OBSOLETE "Unable to find symbol for static data field %s", sname);
4070 // OBSOLETE continue;
4072 // OBSOLETE stype = SYMBOL_TYPE (ref_static);
4074 // OBSOLETE /* allocate a new fip */
4075 // OBSOLETE new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
4076 // OBSOLETE make_cleanup (xfree, new);
4077 // OBSOLETE memset (new, 0, sizeof (struct nextfield));
4078 // OBSOLETE new->next = fip->list;
4079 // OBSOLETE fip->list = new;
4081 // OBSOLETE /* set visibility */
4082 // OBSOLETE /* FIXME! no way to tell visibility from stabs??? */
4083 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
4085 // OBSOLETE /* set field info into fip */
4086 // OBSOLETE fip->list->field.type = stype;
4088 // OBSOLETE /* set bitpos & bitsize */
4089 // OBSOLETE SET_FIELD_PHYSNAME (fip->list->field, savestring (sname, strlen (sname)));
4091 // OBSOLETE /* set name field */
4092 // OBSOLETE /* The following is code to work around cfront generated stabs.
4093 // OBSOLETE The stabs contains full mangled name for each field.
4094 // OBSOLETE We try to demangle the name and extract the field name out of it.
4096 // OBSOLETE if (ARM_DEMANGLING)
4098 // OBSOLETE char *dem, *dem_p;
4099 // OBSOLETE dem = cplus_demangle (sname, DMGL_ANSI | DMGL_PARAMS);
4100 // OBSOLETE if (dem != NULL)
4102 // OBSOLETE dem_p = strrchr (dem, ':');
4103 // OBSOLETE if (dem_p != 0 && *(dem_p - 1) == ':')
4104 // OBSOLETE dem_p++;
4105 // OBSOLETE fip->list->field.name =
4106 // OBSOLETE obsavestring (dem_p, strlen (dem_p), &objfile->type_obstack);
4110 // OBSOLETE fip->list->field.name =
4111 // OBSOLETE obsavestring (sname, strlen (sname), &objfile->type_obstack);
4113 // OBSOLETE } /* end of code for cfront work around */
4114 // OBSOLETE } /* loop again for next static field */
4115 // OBSOLETE return 1;
4118 // OBSOLETE /* Copy structure fields to fip so attach_fields_to_type will work.
4119 // OBSOLETE type has already been created with the initial instance data fields.
4120 // OBSOLETE Now we want to be able to add the other members to the class,
4121 // OBSOLETE so we want to add them back to the fip and reattach them again
4122 // OBSOLETE once we have collected all the class members. */
4124 // OBSOLETE static int
4125 // OBSOLETE copy_cfront_struct_fields (struct field_info *fip, struct type *type,
4126 // OBSOLETE struct objfile *objfile)
4128 // OBSOLETE int nfields = TYPE_NFIELDS (type);
4130 // OBSOLETE struct nextfield *new;
4132 // OBSOLETE /* Copy the fields into the list of fips and reset the types
4133 // OBSOLETE to remove the old fields */
4135 // OBSOLETE for (i = 0; i < nfields; i++)
4137 // OBSOLETE /* allocate a new fip */
4138 // OBSOLETE new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
4139 // OBSOLETE make_cleanup (xfree, new);
4140 // OBSOLETE memset (new, 0, sizeof (struct nextfield));
4141 // OBSOLETE new->next = fip->list;
4142 // OBSOLETE fip->list = new;
4144 // OBSOLETE /* copy field info into fip */
4145 // OBSOLETE new->field = TYPE_FIELD (type, i);
4146 // OBSOLETE /* set visibility */
4147 // OBSOLETE if (TYPE_FIELD_PROTECTED (type, i))
4148 // OBSOLETE new->visibility = VISIBILITY_PROTECTED;
4149 // OBSOLETE else if (TYPE_FIELD_PRIVATE (type, i))
4150 // OBSOLETE new->visibility = VISIBILITY_PRIVATE;
4152 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
4154 // OBSOLETE /* Now delete the fields from the type since we will be
4155 // OBSOLETE allocing new space once we get the rest of the fields
4156 // OBSOLETE in attach_fields_to_type.
4157 // OBSOLETE The pointer TYPE_FIELDS(type) is left dangling but should
4158 // OBSOLETE be freed later by objstack_free */
4159 // OBSOLETE TYPE_FIELDS (type) = 0;
4160 // OBSOLETE TYPE_NFIELDS (type) = 0;
4162 // OBSOLETE return 1;
4164 #endif /* OBSOLETE CFront */
4166 /* Create the vector of fields, and record how big it is.
4167 We need this info to record proper virtual function table information
4168 for this class's virtual functions. */
4171 attach_fields_to_type (struct field_info *fip, struct type *type,
4172 struct objfile *objfile)
4175 int non_public_fields = 0;
4176 struct nextfield *scan;
4178 /* Count up the number of fields that we have, as well as taking note of
4179 whether or not there are any non-public fields, which requires us to
4180 allocate and build the private_field_bits and protected_field_bits
4183 for (scan = fip->list; scan != NULL; scan = scan->next)
4186 if (scan->visibility != VISIBILITY_PUBLIC)
4188 non_public_fields++;
4192 /* Now we know how many fields there are, and whether or not there are any
4193 non-public fields. Record the field count, allocate space for the
4194 array of fields, and create blank visibility bitfields if necessary. */
4196 TYPE_NFIELDS (type) = nfields;
4197 TYPE_FIELDS (type) = (struct field *)
4198 TYPE_ALLOC (type, sizeof (struct field) * nfields);
4199 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
4201 if (non_public_fields)
4203 ALLOCATE_CPLUS_STRUCT_TYPE (type);
4205 TYPE_FIELD_PRIVATE_BITS (type) =
4206 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4207 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
4209 TYPE_FIELD_PROTECTED_BITS (type) =
4210 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4211 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
4213 TYPE_FIELD_IGNORE_BITS (type) =
4214 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4215 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
4218 /* Copy the saved-up fields into the field vector. Start from the head
4219 of the list, adding to the tail of the field array, so that they end
4220 up in the same order in the array in which they were added to the list. */
4222 while (nfields-- > 0)
4224 TYPE_FIELD (type, nfields) = fip->list->field;
4225 switch (fip->list->visibility)
4227 case VISIBILITY_PRIVATE:
4228 SET_TYPE_FIELD_PRIVATE (type, nfields);
4231 case VISIBILITY_PROTECTED:
4232 SET_TYPE_FIELD_PROTECTED (type, nfields);
4235 case VISIBILITY_IGNORE:
4236 SET_TYPE_FIELD_IGNORE (type, nfields);
4239 case VISIBILITY_PUBLIC:
4243 /* Unknown visibility. Complain and treat it as public. */
4245 complaint (&symfile_complaints, "Unknown visibility `%c' for field",
4246 fip->list->visibility);
4250 fip->list = fip->list->next;
4256 /* Complain that the compiler has emitted more than one definition for the
4257 structure type TYPE. */
4259 complain_about_struct_wipeout (struct type *type)
4264 if (TYPE_TAG_NAME (type))
4266 name = TYPE_TAG_NAME (type);
4267 switch (TYPE_CODE (type))
4269 case TYPE_CODE_STRUCT: kind = "struct "; break;
4270 case TYPE_CODE_UNION: kind = "union "; break;
4271 case TYPE_CODE_ENUM: kind = "enum "; break;
4275 else if (TYPE_NAME (type))
4277 name = TYPE_NAME (type);
4286 complaint (&symfile_complaints,
4287 "struct/union type gets multiply defined: %s%s", kind, name);
4291 /* Read the description of a structure (or union type) and return an object
4292 describing the type.
4294 PP points to a character pointer that points to the next unconsumed token
4295 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
4296 *PP will point to "4a:1,0,32;;".
4298 TYPE points to an incomplete type that needs to be filled in.
4300 OBJFILE points to the current objfile from which the stabs information is
4301 being read. (Note that it is redundant in that TYPE also contains a pointer
4302 to this same objfile, so it might be a good idea to eliminate it. FIXME).
4305 static struct type *
4306 read_struct_type (char **pp, struct type *type, enum type_code type_code,
4307 struct objfile *objfile)
4309 struct cleanup *back_to;
4310 struct field_info fi;
4315 /* When describing struct/union/class types in stabs, G++ always drops
4316 all qualifications from the name. So if you've got:
4317 struct A { ... struct B { ... }; ... };
4318 then G++ will emit stabs for `struct A::B' that call it simply
4319 `struct B'. Obviously, if you've got a real top-level definition for
4320 `struct B', or other nested definitions, this is going to cause
4323 Obviously, GDB can't fix this by itself, but it can at least avoid
4324 scribbling on existing structure type objects when new definitions
4326 if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF
4327 || TYPE_STUB (type)))
4329 complain_about_struct_wipeout (type);
4331 /* It's probably best to return the type unchanged. */
4335 back_to = make_cleanup (null_cleanup, 0);
4337 INIT_CPLUS_SPECIFIC (type);
4338 TYPE_CODE (type) = type_code;
4339 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
4341 /* First comes the total size in bytes. */
4345 TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits);
4347 return error_type (pp, objfile);
4350 /* Now read the baseclasses, if any, read the regular C struct or C++
4351 class member fields, attach the fields to the type, read the C++
4352 member functions, attach them to the type, and then read any tilde
4353 field (baseclass specifier for the class holding the main vtable). */
4355 if (!read_baseclasses (&fi, pp, type, objfile)
4356 || !read_struct_fields (&fi, pp, type, objfile)
4357 || !attach_fields_to_type (&fi, type, objfile)
4358 || !read_member_functions (&fi, pp, type, objfile)
4359 || !attach_fn_fields_to_type (&fi, type)
4360 || !read_tilde_fields (&fi, pp, type, objfile))
4362 type = error_type (pp, objfile);
4365 do_cleanups (back_to);
4369 /* Read a definition of an array type,
4370 and create and return a suitable type object.
4371 Also creates a range type which represents the bounds of that
4374 static struct type *
4375 read_array_type (char **pp, struct type *type,
4376 struct objfile *objfile)
4378 struct type *index_type, *element_type, *range_type;
4383 /* Format of an array type:
4384 "ar<index type>;lower;upper;<array_contents_type>".
4385 OS9000: "arlower,upper;<array_contents_type>".
4387 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
4388 for these, produce a type like float[][]. */
4391 index_type = read_type (pp, objfile);
4393 /* Improper format of array type decl. */
4394 return error_type (pp, objfile);
4398 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
4403 lower = read_huge_number (pp, ';', &nbits);
4406 return error_type (pp, objfile);
4408 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
4413 upper = read_huge_number (pp, ';', &nbits);
4415 return error_type (pp, objfile);
4417 element_type = read_type (pp, objfile);
4426 create_range_type ((struct type *) NULL, index_type, lower, upper);
4427 type = create_array_type (type, element_type, range_type);
4433 /* Read a definition of an enumeration type,
4434 and create and return a suitable type object.
4435 Also defines the symbols that represent the values of the type. */
4437 static struct type *
4438 read_enum_type (char **pp, struct type *type,
4439 struct objfile *objfile)
4446 struct pending **symlist;
4447 struct pending *osyms, *syms;
4450 int unsigned_enum = 1;
4453 /* FIXME! The stabs produced by Sun CC merrily define things that ought
4454 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
4455 to do? For now, force all enum values to file scope. */
4456 if (within_function)
4457 symlist = &local_symbols;
4460 symlist = &file_symbols;
4462 o_nsyms = osyms ? osyms->nsyms : 0;
4464 /* The aix4 compiler emits an extra field before the enum members;
4465 my guess is it's a type of some sort. Just ignore it. */
4468 /* Skip over the type. */
4472 /* Skip over the colon. */
4476 /* Read the value-names and their values.
4477 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
4478 A semicolon or comma instead of a NAME means the end. */
4479 while (**pp && **pp != ';' && **pp != ',')
4481 STABS_CONTINUE (pp, objfile);
4485 name = obsavestring (*pp, p - *pp, &objfile->symbol_obstack);
4487 n = read_huge_number (pp, ',', &nbits);
4489 return error_type (pp, objfile);
4491 sym = (struct symbol *)
4492 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
4493 memset (sym, 0, sizeof (struct symbol));
4494 DEPRECATED_SYMBOL_NAME (sym) = name;
4495 SYMBOL_LANGUAGE (sym) = current_subfile->language;
4496 SYMBOL_CLASS (sym) = LOC_CONST;
4497 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
4498 SYMBOL_VALUE (sym) = n;
4501 add_symbol_to_list (sym, symlist);
4506 (*pp)++; /* Skip the semicolon. */
4508 /* Now fill in the fields of the type-structure. */
4510 TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT;
4511 TYPE_CODE (type) = TYPE_CODE_ENUM;
4512 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
4514 TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
4515 TYPE_NFIELDS (type) = nsyms;
4516 TYPE_FIELDS (type) = (struct field *)
4517 TYPE_ALLOC (type, sizeof (struct field) * nsyms);
4518 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms);
4520 /* Find the symbols for the values and put them into the type.
4521 The symbols can be found in the symlist that we put them on
4522 to cause them to be defined. osyms contains the old value
4523 of that symlist; everything up to there was defined by us. */
4524 /* Note that we preserve the order of the enum constants, so
4525 that in something like "enum {FOO, LAST_THING=FOO}" we print
4526 FOO, not LAST_THING. */
4528 for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next)
4530 int last = syms == osyms ? o_nsyms : 0;
4531 int j = syms->nsyms;
4532 for (; --j >= last; --n)
4534 struct symbol *xsym = syms->symbol[j];
4535 SYMBOL_TYPE (xsym) = type;
4536 TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym);
4537 TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
4538 TYPE_FIELD_BITSIZE (type, n) = 0;
4547 /* Sun's ACC uses a somewhat saner method for specifying the builtin
4548 typedefs in every file (for int, long, etc):
4550 type = b <signed> <width> <format type>; <offset>; <nbits>
4552 optional format type = c or b for char or boolean.
4553 offset = offset from high order bit to start bit of type.
4554 width is # bytes in object of this type, nbits is # bits in type.
4556 The width/offset stuff appears to be for small objects stored in
4557 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
4560 static struct type *
4561 read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile)
4566 enum type_code code = TYPE_CODE_INT;
4577 return error_type (pp, objfile);
4581 /* For some odd reason, all forms of char put a c here. This is strange
4582 because no other type has this honor. We can safely ignore this because
4583 we actually determine 'char'acterness by the number of bits specified in
4585 Boolean forms, e.g Fortran logical*X, put a b here. */
4589 else if (**pp == 'b')
4591 code = TYPE_CODE_BOOL;
4595 /* The first number appears to be the number of bytes occupied
4596 by this type, except that unsigned short is 4 instead of 2.
4597 Since this information is redundant with the third number,
4598 we will ignore it. */
4599 read_huge_number (pp, ';', &nbits);
4601 return error_type (pp, objfile);
4603 /* The second number is always 0, so ignore it too. */
4604 read_huge_number (pp, ';', &nbits);
4606 return error_type (pp, objfile);
4608 /* The third number is the number of bits for this type. */
4609 type_bits = read_huge_number (pp, 0, &nbits);
4611 return error_type (pp, objfile);
4612 /* The type *should* end with a semicolon. If it are embedded
4613 in a larger type the semicolon may be the only way to know where
4614 the type ends. If this type is at the end of the stabstring we
4615 can deal with the omitted semicolon (but we don't have to like
4616 it). Don't bother to complain(), Sun's compiler omits the semicolon
4622 return init_type (TYPE_CODE_VOID, 1,
4623 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
4626 return init_type (code,
4627 type_bits / TARGET_CHAR_BIT,
4628 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
4632 static struct type *
4633 read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile)
4638 struct type *rettype;
4640 /* The first number has more details about the type, for example
4642 details = read_huge_number (pp, ';', &nbits);
4644 return error_type (pp, objfile);
4646 /* The second number is the number of bytes occupied by this type */
4647 nbytes = read_huge_number (pp, ';', &nbits);
4649 return error_type (pp, objfile);
4651 if (details == NF_COMPLEX || details == NF_COMPLEX16
4652 || details == NF_COMPLEX32)
4654 rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile);
4655 TYPE_TARGET_TYPE (rettype)
4656 = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile);
4660 return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile);
4663 /* Read a number from the string pointed to by *PP.
4664 The value of *PP is advanced over the number.
4665 If END is nonzero, the character that ends the
4666 number must match END, or an error happens;
4667 and that character is skipped if it does match.
4668 If END is zero, *PP is left pointing to that character.
4670 If the number fits in a long, set *BITS to 0 and return the value.
4671 If not, set *BITS to be the number of bits in the number and return 0.
4673 If encounter garbage, set *BITS to -1 and return 0. */
4676 read_huge_number (char **pp, int end, int *bits)
4693 /* Leading zero means octal. GCC uses this to output values larger
4694 than an int (because that would be hard in decimal). */
4701 upper_limit = LONG_MAX / radix;
4703 while ((c = *p++) >= '0' && c < ('0' + radix))
4705 if (n <= upper_limit)
4708 n += c - '0'; /* FIXME this overflows anyway */
4713 /* This depends on large values being output in octal, which is
4720 /* Ignore leading zeroes. */
4724 else if (c == '2' || c == '3')
4750 /* Large decimal constants are an error (because it is hard to
4751 count how many bits are in them). */
4757 /* -0x7f is the same as 0x80. So deal with it by adding one to
4758 the number of bits. */
4770 /* It's *BITS which has the interesting information. */
4774 static struct type *
4775 read_range_type (char **pp, int typenums[2], struct objfile *objfile)
4777 char *orig_pp = *pp;
4782 struct type *result_type;
4783 struct type *index_type = NULL;
4785 /* First comes a type we are a subrange of.
4786 In C it is usually 0, 1 or the type being defined. */
4787 if (read_type_number (pp, rangenums) != 0)
4788 return error_type (pp, objfile);
4789 self_subrange = (rangenums[0] == typenums[0] &&
4790 rangenums[1] == typenums[1]);
4795 index_type = read_type (pp, objfile);
4798 /* A semicolon should now follow; skip it. */
4802 /* The remaining two operands are usually lower and upper bounds
4803 of the range. But in some special cases they mean something else. */
4804 n2 = read_huge_number (pp, ';', &n2bits);
4805 n3 = read_huge_number (pp, ';', &n3bits);
4807 if (n2bits == -1 || n3bits == -1)
4808 return error_type (pp, objfile);
4811 goto handle_true_range;
4813 /* If limits are huge, must be large integral type. */
4814 if (n2bits != 0 || n3bits != 0)
4816 char got_signed = 0;
4817 char got_unsigned = 0;
4818 /* Number of bits in the type. */
4821 /* Range from 0 to <large number> is an unsigned large integral type. */
4822 if ((n2bits == 0 && n2 == 0) && n3bits != 0)
4827 /* Range from <large number> to <large number>-1 is a large signed
4828 integral type. Take care of the case where <large number> doesn't
4829 fit in a long but <large number>-1 does. */
4830 else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1)
4831 || (n2bits != 0 && n3bits == 0
4832 && (n2bits == sizeof (long) * HOST_CHAR_BIT)
4839 if (got_signed || got_unsigned)
4841 return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT,
4842 got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL,
4846 return error_type (pp, objfile);
4849 /* A type defined as a subrange of itself, with bounds both 0, is void. */
4850 if (self_subrange && n2 == 0 && n3 == 0)
4851 return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile);
4853 /* If n3 is zero and n2 is positive, we want a floating type, and n2
4854 is the width in bytes.
4856 Fortran programs appear to use this for complex types also. To
4857 distinguish between floats and complex, g77 (and others?) seem
4858 to use self-subranges for the complexes, and subranges of int for
4861 Also note that for complexes, g77 sets n2 to the size of one of
4862 the member floats, not the whole complex beast. My guess is that
4863 this was to work well with pre-COMPLEX versions of gdb. */
4865 if (n3 == 0 && n2 > 0)
4867 struct type *float_type
4868 = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile);
4872 struct type *complex_type =
4873 init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile);
4874 TYPE_TARGET_TYPE (complex_type) = float_type;
4875 return complex_type;
4881 /* If the upper bound is -1, it must really be an unsigned int. */
4883 else if (n2 == 0 && n3 == -1)
4885 /* It is unsigned int or unsigned long. */
4886 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
4887 compatibility hack. */
4888 return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
4889 TYPE_FLAG_UNSIGNED, NULL, objfile);
4892 /* Special case: char is defined (Who knows why) as a subrange of
4893 itself with range 0-127. */
4894 else if (self_subrange && n2 == 0 && n3 == 127)
4895 return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile);
4897 /* We used to do this only for subrange of self or subrange of int. */
4900 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
4901 "unsigned long", and we already checked for that,
4902 so don't need to test for it here. */
4905 /* n3 actually gives the size. */
4906 return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED,
4909 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
4910 unsigned n-byte integer. But do require n to be a power of
4911 two; we don't want 3- and 5-byte integers flying around. */
4917 for (bytes = 0; (bits & 0xff) == 0xff; bytes++)
4920 && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */
4921 return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL,
4925 /* I think this is for Convex "long long". Since I don't know whether
4926 Convex sets self_subrange, I also accept that particular size regardless
4927 of self_subrange. */
4928 else if (n3 == 0 && n2 < 0
4930 || n2 == -TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT))
4931 return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile);
4932 else if (n2 == -n3 - 1)
4935 return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile);
4937 return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile);
4938 if (n3 == 0x7fffffff)
4939 return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile);
4942 /* We have a real range type on our hands. Allocate space and
4943 return a real pointer. */
4947 index_type = builtin_type_int;
4949 index_type = *dbx_lookup_type (rangenums);
4950 if (index_type == NULL)
4952 /* Does this actually ever happen? Is that why we are worrying
4953 about dealing with it rather than just calling error_type? */
4955 static struct type *range_type_index;
4957 complaint (&symfile_complaints,
4958 "base type %d of range type is not defined", rangenums[1]);
4959 if (range_type_index == NULL)
4961 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
4962 0, "range type index type", NULL);
4963 index_type = range_type_index;
4966 result_type = create_range_type ((struct type *) NULL, index_type, n2, n3);
4967 return (result_type);
4970 /* Read in an argument list. This is a list of types, separated by commas
4971 and terminated with END. Return the list of types read in, or (struct type
4972 **)-1 if there is an error. */
4974 static struct field *
4975 read_args (char **pp, int end, struct objfile *objfile, int *nargsp,
4978 /* FIXME! Remove this arbitrary limit! */
4979 struct type *types[1024]; /* allow for fns of 1023 parameters */
4986 /* Invalid argument list: no ','. */
4987 return (struct field *) -1;
4989 STABS_CONTINUE (pp, objfile);
4990 types[n++] = read_type (pp, objfile);
4992 (*pp)++; /* get past `end' (the ':' character) */
4994 if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID)
5002 rval = (struct field *) xmalloc (n * sizeof (struct field));
5003 memset (rval, 0, n * sizeof (struct field));
5004 for (i = 0; i < n; i++)
5005 rval[i].type = types[i];
5010 /* Common block handling. */
5012 /* List of symbols declared since the last BCOMM. This list is a tail
5013 of local_symbols. When ECOMM is seen, the symbols on the list
5014 are noted so their proper addresses can be filled in later,
5015 using the common block base address gotten from the assembler
5018 static struct pending *common_block;
5019 static int common_block_i;
5021 /* Name of the current common block. We get it from the BCOMM instead of the
5022 ECOMM to match IBM documentation (even though IBM puts the name both places
5023 like everyone else). */
5024 static char *common_block_name;
5026 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
5027 to remain after this function returns. */
5030 common_block_start (char *name, struct objfile *objfile)
5032 if (common_block_name != NULL)
5034 complaint (&symfile_complaints,
5035 "Invalid symbol data: common block within common block");
5037 common_block = local_symbols;
5038 common_block_i = local_symbols ? local_symbols->nsyms : 0;
5039 common_block_name = obsavestring (name, strlen (name),
5040 &objfile->symbol_obstack);
5043 /* Process a N_ECOMM symbol. */
5046 common_block_end (struct objfile *objfile)
5048 /* Symbols declared since the BCOMM are to have the common block
5049 start address added in when we know it. common_block and
5050 common_block_i point to the first symbol after the BCOMM in
5051 the local_symbols list; copy the list and hang it off the
5052 symbol for the common block name for later fixup. */
5055 struct pending *new = 0;
5056 struct pending *next;
5059 if (common_block_name == NULL)
5061 complaint (&symfile_complaints, "ECOMM symbol unmatched by BCOMM");
5065 sym = (struct symbol *)
5066 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
5067 memset (sym, 0, sizeof (struct symbol));
5068 /* Note: common_block_name already saved on symbol_obstack */
5069 DEPRECATED_SYMBOL_NAME (sym) = common_block_name;
5070 SYMBOL_CLASS (sym) = LOC_BLOCK;
5072 /* Now we copy all the symbols which have been defined since the BCOMM. */
5074 /* Copy all the struct pendings before common_block. */
5075 for (next = local_symbols;
5076 next != NULL && next != common_block;
5079 for (j = 0; j < next->nsyms; j++)
5080 add_symbol_to_list (next->symbol[j], &new);
5083 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
5084 NULL, it means copy all the local symbols (which we already did
5087 if (common_block != NULL)
5088 for (j = common_block_i; j < common_block->nsyms; j++)
5089 add_symbol_to_list (common_block->symbol[j], &new);
5091 SYMBOL_TYPE (sym) = (struct type *) new;
5093 /* Should we be putting local_symbols back to what it was?
5096 i = hashname (DEPRECATED_SYMBOL_NAME (sym));
5097 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
5098 global_sym_chain[i] = sym;
5099 common_block_name = NULL;
5102 /* Add a common block's start address to the offset of each symbol
5103 declared to be in it (by being between a BCOMM/ECOMM pair that uses
5104 the common block name). */
5107 fix_common_block (struct symbol *sym, int valu)
5109 struct pending *next = (struct pending *) SYMBOL_TYPE (sym);
5110 for (; next; next = next->next)
5113 for (j = next->nsyms - 1; j >= 0; j--)
5114 SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu;
5120 /* What about types defined as forward references inside of a small lexical
5122 /* Add a type to the list of undefined types to be checked through
5123 once this file has been read in. */
5126 add_undefined_type (struct type *type)
5128 if (undef_types_length == undef_types_allocated)
5130 undef_types_allocated *= 2;
5131 undef_types = (struct type **)
5132 xrealloc ((char *) undef_types,
5133 undef_types_allocated * sizeof (struct type *));
5135 undef_types[undef_types_length++] = type;
5138 /* Go through each undefined type, see if it's still undefined, and fix it
5139 up if possible. We have two kinds of undefined types:
5141 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
5142 Fix: update array length using the element bounds
5143 and the target type's length.
5144 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
5145 yet defined at the time a pointer to it was made.
5146 Fix: Do a full lookup on the struct/union tag. */
5148 cleanup_undefined_types (void)
5152 for (type = undef_types; type < undef_types + undef_types_length; type++)
5154 switch (TYPE_CODE (*type))
5157 case TYPE_CODE_STRUCT:
5158 case TYPE_CODE_UNION:
5159 case TYPE_CODE_ENUM:
5161 /* Check if it has been defined since. Need to do this here
5162 as well as in check_typedef to deal with the (legitimate in
5163 C though not C++) case of several types with the same name
5164 in different source files. */
5165 if (TYPE_STUB (*type))
5167 struct pending *ppt;
5169 /* Name of the type, without "struct" or "union" */
5170 char *typename = TYPE_TAG_NAME (*type);
5172 if (typename == NULL)
5174 complaint (&symfile_complaints, "need a type name");
5177 for (ppt = file_symbols; ppt; ppt = ppt->next)
5179 for (i = 0; i < ppt->nsyms; i++)
5181 struct symbol *sym = ppt->symbol[i];
5183 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
5184 && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
5185 && (TYPE_CODE (SYMBOL_TYPE (sym)) ==
5187 && STREQ (DEPRECATED_SYMBOL_NAME (sym), typename))
5188 replace_type (*type, SYMBOL_TYPE (sym));
5197 complaint (&symfile_complaints,
5198 "GDB internal error. cleanup_undefined_types with bad type %d.",
5205 undef_types_length = 0;
5208 /* Scan through all of the global symbols defined in the object file,
5209 assigning values to the debugging symbols that need to be assigned
5210 to. Get these symbols from the minimal symbol table. */
5213 scan_file_globals (struct objfile *objfile)
5216 struct minimal_symbol *msymbol;
5217 struct symbol *sym, *prev, *rsym;
5218 struct objfile *resolve_objfile;
5220 /* SVR4 based linkers copy referenced global symbols from shared
5221 libraries to the main executable.
5222 If we are scanning the symbols for a shared library, try to resolve
5223 them from the minimal symbols of the main executable first. */
5225 if (symfile_objfile && objfile != symfile_objfile)
5226 resolve_objfile = symfile_objfile;
5228 resolve_objfile = objfile;
5232 /* Avoid expensive loop through all minimal symbols if there are
5233 no unresolved symbols. */
5234 for (hash = 0; hash < HASHSIZE; hash++)
5236 if (global_sym_chain[hash])
5239 if (hash >= HASHSIZE)
5242 for (msymbol = resolve_objfile->msymbols;
5243 msymbol && DEPRECATED_SYMBOL_NAME (msymbol) != NULL;
5248 /* Skip static symbols. */
5249 switch (MSYMBOL_TYPE (msymbol))
5261 /* Get the hash index and check all the symbols
5262 under that hash index. */
5264 hash = hashname (DEPRECATED_SYMBOL_NAME (msymbol));
5266 for (sym = global_sym_chain[hash]; sym;)
5268 if (DEPRECATED_SYMBOL_NAME (msymbol)[0] == DEPRECATED_SYMBOL_NAME (sym)[0] &&
5269 STREQ (DEPRECATED_SYMBOL_NAME (msymbol) + 1, DEPRECATED_SYMBOL_NAME (sym) + 1))
5272 struct alias_list *aliases;
5274 /* Splice this symbol out of the hash chain and
5275 assign the value we have to it. */
5278 SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
5282 global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym);
5285 /* Check to see whether we need to fix up a common block. */
5286 /* Note: this code might be executed several times for
5287 the same symbol if there are multiple references. */
5289 /* If symbol has aliases, do minimal symbol fixups for each.
5290 These live aliases/references weren't added to
5291 global_sym_chain hash but may also need to be fixed up. */
5292 /* FIXME: Maybe should have added aliases to the global chain, resolved symbol name, then treated aliases as normal
5293 symbols? Still, we wouldn't want to add_to_list. */
5294 /* Now do the same for each alias of this symbol */
5296 aliases = SYMBOL_ALIASES (sym);
5299 if (SYMBOL_CLASS (rsym) == LOC_BLOCK)
5301 fix_common_block (rsym,
5302 SYMBOL_VALUE_ADDRESS (msymbol));
5306 SYMBOL_VALUE_ADDRESS (rsym)
5307 = SYMBOL_VALUE_ADDRESS (msymbol);
5309 SYMBOL_SECTION (rsym) = SYMBOL_SECTION (msymbol);
5312 rsym = aliases->sym;
5313 aliases = aliases->next;
5322 sym = SYMBOL_VALUE_CHAIN (prev);
5326 sym = global_sym_chain[hash];
5332 sym = SYMBOL_VALUE_CHAIN (sym);
5336 if (resolve_objfile == objfile)
5338 resolve_objfile = objfile;
5341 /* Change the storage class of any remaining unresolved globals to
5342 LOC_UNRESOLVED and remove them from the chain. */
5343 for (hash = 0; hash < HASHSIZE; hash++)
5345 sym = global_sym_chain[hash];
5349 sym = SYMBOL_VALUE_CHAIN (sym);
5351 /* Change the symbol address from the misleading chain value
5353 SYMBOL_VALUE_ADDRESS (prev) = 0;
5355 /* Complain about unresolved common block symbols. */
5356 if (SYMBOL_CLASS (prev) == LOC_STATIC)
5357 SYMBOL_CLASS (prev) = LOC_UNRESOLVED;
5359 complaint (&symfile_complaints,
5360 "%s: common block `%s' from global_sym_chain unresolved",
5361 objfile->name, DEPRECATED_SYMBOL_NAME (prev));
5364 memset (global_sym_chain, 0, sizeof (global_sym_chain));
5367 /* Initialize anything that needs initializing when starting to read
5368 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
5372 stabsread_init (void)
5376 /* Initialize anything that needs initializing when a completely new
5377 symbol file is specified (not just adding some symbols from another
5378 file, e.g. a shared library). */
5381 stabsread_new_init (void)
5383 /* Empty the hash table of global syms looking for values. */
5384 memset (global_sym_chain, 0, sizeof (global_sym_chain));
5387 /* Initialize anything that needs initializing at the same time as
5388 start_symtab() is called. */
5393 global_stabs = NULL; /* AIX COFF */
5394 /* Leave FILENUM of 0 free for builtin types and this file's types. */
5395 n_this_object_header_files = 1;
5396 type_vector_length = 0;
5397 type_vector = (struct type **) 0;
5399 /* FIXME: If common_block_name is not already NULL, we should complain(). */
5400 common_block_name = NULL;
5403 /* Call after end_symtab() */
5410 xfree (type_vector);
5413 type_vector_length = 0;
5414 previous_stab_code = 0;
5418 finish_global_stabs (struct objfile *objfile)
5422 patch_block_stabs (global_symbols, global_stabs, objfile);
5423 xfree (global_stabs);
5424 global_stabs = NULL;
5428 /* Find the end of the name, delimited by a ':', but don't match
5429 ObjC symbols which look like -[Foo bar::]:bla. */
5431 find_name_end (char *name)
5434 if (s[0] == '-' || *s == '+')
5436 /* Must be an ObjC method symbol. */
5439 error ("invalid symbol name \"%s\"", name);
5441 s = strchr (s, ']');
5444 error ("invalid symbol name \"%s\"", name);
5446 return strchr (s, ':');
5450 return strchr (s, ':');
5454 /* Initializer for this module */
5457 _initialize_stabsread (void)
5459 undef_types_allocated = 20;
5460 undef_types_length = 0;
5461 undef_types = (struct type **)
5462 xmalloc (undef_types_allocated * sizeof (struct type *));