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_range_type (char **, int[2], struct objfile *);
110 static struct type *read_sun_builtin_type (char **, int[2], struct objfile *);
112 static struct type *read_sun_floating_type (char **, int[2],
115 static struct type *read_enum_type (char **, struct type *, struct objfile *);
117 static struct type *rs6000_builtin_type (int);
120 read_member_functions (struct field_info *, char **, struct type *,
124 read_struct_fields (struct field_info *, char **, struct type *,
128 read_baseclasses (struct field_info *, char **, struct type *,
132 read_tilde_fields (struct field_info *, char **, struct type *,
135 static int attach_fn_fields_to_type (struct field_info *, struct type *);
137 static int attach_fields_to_type (struct field_info *, struct type *,
140 static struct type *read_struct_type (char **, struct type *,
144 static struct type *read_array_type (char **, struct type *,
147 static struct field *read_args (char **, int, struct objfile *, int *, int *);
150 read_cpp_abbrev (struct field_info *, char **, struct type *,
152 #if 0 /* OBSOLETE CFront */
153 // OBSOLETE /* new functions added for cfront support */
155 // OBSOLETE static int
156 // OBSOLETE copy_cfront_struct_fields (struct field_info *, struct type *,
157 // OBSOLETE struct objfile *);
159 // OBSOLETE static char *get_cfront_method_physname (char *);
161 // OBSOLETE static int
162 // OBSOLETE read_cfront_baseclasses (struct field_info *, char **,
163 // OBSOLETE struct type *, struct objfile *);
165 // OBSOLETE static int
166 // OBSOLETE read_cfront_static_fields (struct field_info *, char **,
167 // OBSOLETE struct type *, struct objfile *);
168 // OBSOLETE static int
169 // OBSOLETE read_cfront_member_functions (struct field_info *, char **,
170 // OBSOLETE struct type *, struct objfile *);
172 // OBSOLETE /* end new functions added for cfront support */
173 #endif /* OBSOLETE CFront */
175 static char *find_name_end (char *name);
177 static void add_live_range (struct objfile *, struct symbol *, CORE_ADDR,
180 static int resolve_live_range (struct objfile *, struct symbol *, char *);
182 static int process_reference (char **string);
184 static CORE_ADDR ref_search_value (int refnum);
186 static int resolve_symbol_reference (struct objfile *, struct symbol *,
189 void stabsread_clear_cache (void);
191 static const char vptr_name[] = "_vptr$";
192 static const char vb_name[] = "_vb$";
194 /* Define this as 1 if a pcc declaration of a char or short argument
195 gives the correct address. Otherwise assume pcc gives the
196 address of the corresponding int, which is not the same on a
197 big-endian machine. */
199 #if !defined (BELIEVE_PCC_PROMOTION)
200 #define BELIEVE_PCC_PROMOTION 0
202 #if !defined (BELIEVE_PCC_PROMOTION_TYPE)
203 #define BELIEVE_PCC_PROMOTION_TYPE 0
207 invalid_cpp_abbrev_complaint (const char *arg1)
209 complaint (&symfile_complaints, "invalid C++ abbreviation `%s'", arg1);
213 reg_value_complaint (int arg1, int arg2, const char *arg3)
215 complaint (&symfile_complaints,
216 "register number %d too large (max %d) in symbol %s", arg1, arg2,
221 stabs_general_complaint (const char *arg1)
223 complaint (&symfile_complaints, "%s", arg1);
227 lrs_general_complaint (const char *arg1)
229 complaint (&symfile_complaints, "%s", arg1);
232 /* Make a list of forward references which haven't been defined. */
234 static struct type **undef_types;
235 static int undef_types_allocated;
236 static int undef_types_length;
237 static struct symbol *current_symbol = NULL;
239 /* Check for and handle cretinous stabs symbol name continuation! */
240 #define STABS_CONTINUE(pp,objfile) \
242 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
243 *(pp) = next_symbol_text (objfile); \
247 /* Look up a dbx type-number pair. Return the address of the slot
248 where the type for that number-pair is stored.
249 The number-pair is in TYPENUMS.
251 This can be used for finding the type associated with that pair
252 or for associating a new type with the pair. */
255 dbx_lookup_type (int typenums[2])
257 register int filenum = typenums[0];
258 register int index = typenums[1];
260 register int real_filenum;
261 register struct header_file *f;
264 if (filenum == -1) /* -1,-1 is for temporary types. */
267 if (filenum < 0 || filenum >= n_this_object_header_files)
269 complaint (&symfile_complaints,
270 "Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
271 filenum, index, symnum);
279 /* Caller wants address of address of type. We think
280 that negative (rs6k builtin) types will never appear as
281 "lvalues", (nor should they), so we stuff the real type
282 pointer into a temp, and return its address. If referenced,
283 this will do the right thing. */
284 static struct type *temp_type;
286 temp_type = rs6000_builtin_type (index);
290 /* Type is defined outside of header files.
291 Find it in this object file's type vector. */
292 if (index >= type_vector_length)
294 old_len = type_vector_length;
297 type_vector_length = INITIAL_TYPE_VECTOR_LENGTH;
298 type_vector = (struct type **)
299 xmalloc (type_vector_length * sizeof (struct type *));
301 while (index >= type_vector_length)
303 type_vector_length *= 2;
305 type_vector = (struct type **)
306 xrealloc ((char *) type_vector,
307 (type_vector_length * sizeof (struct type *)));
308 memset (&type_vector[old_len], 0,
309 (type_vector_length - old_len) * sizeof (struct type *));
311 return (&type_vector[index]);
315 real_filenum = this_object_header_files[filenum];
317 if (real_filenum >= N_HEADER_FILES (current_objfile))
319 struct type *temp_type;
320 struct type **temp_type_p;
322 warning ("GDB internal error: bad real_filenum");
325 temp_type = init_type (TYPE_CODE_ERROR, 0, 0, NULL, NULL);
326 temp_type_p = (struct type **) xmalloc (sizeof (struct type *));
327 *temp_type_p = temp_type;
331 f = HEADER_FILES (current_objfile) + real_filenum;
333 f_orig_length = f->length;
334 if (index >= f_orig_length)
336 while (index >= f->length)
340 f->vector = (struct type **)
341 xrealloc ((char *) f->vector, f->length * sizeof (struct type *));
342 memset (&f->vector[f_orig_length], 0,
343 (f->length - f_orig_length) * sizeof (struct type *));
345 return (&f->vector[index]);
349 /* Make sure there is a type allocated for type numbers TYPENUMS
350 and return the type object.
351 This can create an empty (zeroed) type object.
352 TYPENUMS may be (-1, -1) to return a new type object that is not
353 put into the type vector, and so may not be referred to by number. */
356 dbx_alloc_type (int typenums[2], struct objfile *objfile)
358 register struct type **type_addr;
360 if (typenums[0] == -1)
362 return (alloc_type (objfile));
365 type_addr = dbx_lookup_type (typenums);
367 /* If we are referring to a type not known at all yet,
368 allocate an empty type for it.
369 We will fill it in later if we find out how. */
372 *type_addr = alloc_type (objfile);
378 /* for all the stabs in a given stab vector, build appropriate types
379 and fix their symbols in given symbol vector. */
382 patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs,
383 struct objfile *objfile)
393 /* for all the stab entries, find their corresponding symbols and
394 patch their types! */
396 for (ii = 0; ii < stabs->count; ++ii)
398 name = stabs->stab[ii];
399 pp = (char *) strchr (name, ':');
403 pp = (char *) strchr (pp, ':');
405 sym = find_symbol_in_list (symbols, name, pp - name);
408 /* FIXME-maybe: it would be nice if we noticed whether
409 the variable was defined *anywhere*, not just whether
410 it is defined in this compilation unit. But neither
411 xlc or GCC seem to need such a definition, and until
412 we do psymtabs (so that the minimal symbols from all
413 compilation units are available now), I'm not sure
414 how to get the information. */
416 /* On xcoff, if a global is defined and never referenced,
417 ld will remove it from the executable. There is then
418 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
419 sym = (struct symbol *)
420 obstack_alloc (&objfile->symbol_obstack,
421 sizeof (struct symbol));
423 memset (sym, 0, sizeof (struct symbol));
424 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
425 SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
427 obsavestring (name, pp - name, &objfile->symbol_obstack);
429 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
431 /* I don't think the linker does this with functions,
432 so as far as I know this is never executed.
433 But it doesn't hurt to check. */
435 lookup_function_type (read_type (&pp, objfile));
439 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
441 add_symbol_to_list (sym, &global_symbols);
446 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
449 lookup_function_type (read_type (&pp, objfile));
453 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
461 /* Read a number by which a type is referred to in dbx data,
462 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
463 Just a single number N is equivalent to (0,N).
464 Return the two numbers by storing them in the vector TYPENUMS.
465 TYPENUMS will then be used as an argument to dbx_lookup_type.
467 Returns 0 for success, -1 for error. */
470 read_type_number (register char **pp, register int *typenums)
476 typenums[0] = read_huge_number (pp, ',', &nbits);
479 typenums[1] = read_huge_number (pp, ')', &nbits);
486 typenums[1] = read_huge_number (pp, 0, &nbits);
494 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
495 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
496 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
497 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
499 #if 0 /* OBSOLETE CFront */
500 // OBSOLETE #define CFRONT_VISIBILITY_PRIVATE '2' /* Stabs character for private field */
501 // OBSOLETE #define CFRONT_VISIBILITY_PUBLIC '1' /* Stabs character for public field */
503 // OBSOLETE /* This code added to support parsing of ARM/Cfront stabs strings */
505 // OBSOLETE /* Get substring from string up to char c, advance string pointer past
506 // OBSOLETE suibstring. */
508 // OBSOLETE static char *
509 // OBSOLETE get_substring (char **p, int c)
511 // OBSOLETE char *str;
512 // OBSOLETE str = *p;
513 // OBSOLETE *p = strchr (*p, c);
521 // OBSOLETE return str;
524 // OBSOLETE /* Physname gets strcat'd onto sname in order to recreate the mangled
525 // OBSOLETE name (see funtion gdb_mangle_name in gdbtypes.c). For cfront, make
526 // OBSOLETE the physname look like that of g++ - take out the initial mangling
527 // OBSOLETE eg: for sname="a" and fname="foo__1aFPFs_i" return "FPFs_i" */
529 // OBSOLETE static char *
530 // OBSOLETE get_cfront_method_physname (char *fname)
532 // OBSOLETE int len = 0;
533 // OBSOLETE /* FIXME would like to make this generic for g++ too, but
534 // OBSOLETE that is already handled in read_member_funcctions */
535 // OBSOLETE char *p = fname;
537 // OBSOLETE /* search ahead to find the start of the mangled suffix */
538 // OBSOLETE if (*p == '_' && *(p + 1) == '_') /* compiler generated; probably a ctor/dtor */
540 // OBSOLETE while (p && (unsigned) ((p + 1) - fname) < strlen (fname) && *(p + 1) != '_')
541 // OBSOLETE p = strchr (p, '_');
542 // OBSOLETE if (!(p && *p == '_' && *(p + 1) == '_'))
543 // OBSOLETE error ("Invalid mangled function name %s", fname);
544 // OBSOLETE p += 2; /* advance past '__' */
546 // OBSOLETE /* struct name length and name of type should come next; advance past it */
547 // OBSOLETE while (isdigit (*p))
549 // OBSOLETE len = len * 10 + (*p - '0');
552 // OBSOLETE p += len;
554 // OBSOLETE return p;
557 // OBSOLETE static void
558 // OBSOLETE msg_unknown_complaint (const char *arg1)
560 // OBSOLETE complaint (&symfile_complaints, "Unsupported token in stabs string %s", arg1);
563 // OBSOLETE /* Read base classes within cfront class definition.
564 // OBSOLETE eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
565 // OBSOLETE ^^^^^^^^^^^^^^^^^^
567 // OBSOLETE A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
571 // OBSOLETE static int
572 // OBSOLETE read_cfront_baseclasses (struct field_info *fip, char **pp, struct type *type,
573 // OBSOLETE struct objfile *objfile)
575 // OBSOLETE int bnum = 0;
578 // OBSOLETE struct nextfield *new;
580 // OBSOLETE if (**pp == ';') /* no base classes; return */
583 // OBSOLETE return 1;
586 // OBSOLETE /* first count base classes so we can allocate space before parsing */
587 // OBSOLETE for (p = *pp; p && *p && *p != ';'; p++)
589 // OBSOLETE if (*p == ' ')
592 // OBSOLETE bnum++; /* add one more for last one */
594 // OBSOLETE /* now parse the base classes until we get to the start of the methods
595 // OBSOLETE (code extracted and munged from read_baseclasses) */
596 // OBSOLETE ALLOCATE_CPLUS_STRUCT_TYPE (type);
597 // OBSOLETE TYPE_N_BASECLASSES (type) = bnum;
599 // OBSOLETE /* allocate space */
601 // OBSOLETE int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
602 // OBSOLETE char *pointer;
604 // OBSOLETE pointer = (char *) TYPE_ALLOC (type, num_bytes);
605 // OBSOLETE TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
607 // OBSOLETE B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
609 // OBSOLETE for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
611 // OBSOLETE new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
612 // OBSOLETE make_cleanup (xfree, new);
613 // OBSOLETE memset (new, 0, sizeof (struct nextfield));
614 // OBSOLETE new->next = fip->list;
615 // OBSOLETE fip->list = new;
616 // OBSOLETE FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */
618 // OBSOLETE STABS_CONTINUE (pp, objfile);
620 // OBSOLETE /* virtual? eg: v2@Bvir */
621 // OBSOLETE if (**pp == 'v')
623 // OBSOLETE SET_TYPE_FIELD_VIRTUAL (type, i);
627 // OBSOLETE /* access? eg: 2@Bvir */
628 // OBSOLETE /* Note: protected inheritance not supported in cfront */
629 // OBSOLETE switch (*(*pp)++)
631 // OBSOLETE case CFRONT_VISIBILITY_PRIVATE:
632 // OBSOLETE new->visibility = VISIBILITY_PRIVATE;
634 // OBSOLETE case CFRONT_VISIBILITY_PUBLIC:
635 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
638 // OBSOLETE /* Bad visibility format. Complain and treat it as
639 // OBSOLETE public. */
641 // OBSOLETE complaint (&symfile_complaints,
642 // OBSOLETE "Unknown visibility `%c' for baseclass",
643 // OBSOLETE new->visibility);
644 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
648 // OBSOLETE /* "@" comes next - eg: @Bvir */
649 // OBSOLETE if (**pp != '@')
651 // OBSOLETE msg_unknown_complaint (*pp);
652 // OBSOLETE return 1;
657 // OBSOLETE /* Set the bit offset of the portion of the object corresponding
658 // OBSOLETE to this baseclass. Always zero in the absence of
659 // OBSOLETE multiple inheritance. */
660 // OBSOLETE /* Unable to read bit position from stabs;
661 // OBSOLETE Assuming no multiple inheritance for now FIXME! */
662 // OBSOLETE /* We may have read this in the structure definition;
663 // OBSOLETE now we should fixup the members to be the actual base classes */
664 // OBSOLETE FIELD_BITPOS (new->field) = 0;
666 // OBSOLETE /* Get the base class name and type */
668 // OBSOLETE char *bname; /* base class name */
669 // OBSOLETE struct symbol *bsym; /* base class */
670 // OBSOLETE char *p1, *p2;
671 // OBSOLETE p1 = strchr (*pp, ' ');
672 // OBSOLETE p2 = strchr (*pp, ';');
673 // OBSOLETE if (p1 < p2)
674 // OBSOLETE bname = get_substring (pp, ' ');
676 // OBSOLETE bname = get_substring (pp, ';');
677 // OBSOLETE if (!bname || !*bname)
679 // OBSOLETE msg_unknown_complaint (*pp);
680 // OBSOLETE return 1;
682 // OBSOLETE /* FIXME! attach base info to type */
683 // OBSOLETE bsym = lookup_symbol (bname, 0, STRUCT_NAMESPACE, 0, 0); /*demangled_name */
684 // OBSOLETE if (bsym)
686 // OBSOLETE new->field.type = SYMBOL_TYPE (bsym);
687 // OBSOLETE new->field.name = type_name_no_tag (new->field.type);
691 // OBSOLETE complaint (&symfile_complaints, "Unable to find base type for %s",
693 // OBSOLETE return 1;
697 // OBSOLETE /* If more base classes to parse, loop again.
698 // OBSOLETE We ate the last ' ' or ';' in get_substring,
699 // OBSOLETE so on exit we will have skipped the trailing ';' */
700 // OBSOLETE /* if invalid, return 0; add code to detect - FIXME! */
702 // OBSOLETE return 1;
705 // OBSOLETE /* read cfront member functions.
706 // OBSOLETE pp points to string starting with list of functions
707 // OBSOLETE eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
708 // OBSOLETE ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
709 // OBSOLETE A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
710 // OBSOLETE ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
713 // OBSOLETE static int
714 // OBSOLETE read_cfront_member_functions (struct field_info *fip, char **pp,
715 // OBSOLETE struct type *type, struct objfile *objfile)
717 // OBSOLETE /* This code extracted from read_member_functions
718 // OBSOLETE so as to do the similar thing for our funcs */
720 // OBSOLETE int nfn_fields = 0;
721 // OBSOLETE int length = 0;
722 // OBSOLETE /* Total number of member functions defined in this class. If the class
723 // OBSOLETE defines two `f' functions, and one `g' function, then this will have
724 // OBSOLETE the value 3. */
725 // OBSOLETE int total_length = 0;
727 // OBSOLETE struct next_fnfield
729 // OBSOLETE struct next_fnfield *next;
730 // OBSOLETE struct fn_field fn_field;
732 // OBSOLETE *sublist;
733 // OBSOLETE struct type *look_ahead_type;
734 // OBSOLETE struct next_fnfieldlist *new_fnlist;
735 // OBSOLETE struct next_fnfield *new_sublist;
736 // OBSOLETE char *main_fn_name;
737 // OBSOLETE char *fname;
738 // OBSOLETE struct symbol *ref_func = 0;
740 // OBSOLETE /* Process each list until we find the end of the member functions.
741 // OBSOLETE eg: p = "__ct__1AFv foo__1AFv ;;;" */
743 // OBSOLETE STABS_CONTINUE (pp, objfile); /* handle \\ */
745 // OBSOLETE while (**pp != ';' && (fname = get_substring (pp, ' '), fname))
747 // OBSOLETE int is_static = 0;
748 // OBSOLETE int sublist_count = 0;
749 // OBSOLETE char *pname;
750 // OBSOLETE if (fname[0] == '*') /* static member */
752 // OBSOLETE is_static = 1;
753 // OBSOLETE sublist_count++;
756 // OBSOLETE ref_func = lookup_symbol (fname, 0, VAR_NAMESPACE, 0, 0); /* demangled name */
757 // OBSOLETE if (!ref_func)
759 // OBSOLETE complaint (&symfile_complaints,
760 // OBSOLETE "Unable to find function symbol for %s", fname);
761 // OBSOLETE continue;
763 // OBSOLETE sublist = NULL;
764 // OBSOLETE look_ahead_type = NULL;
765 // OBSOLETE length = 0;
767 // OBSOLETE new_fnlist = (struct next_fnfieldlist *)
768 // OBSOLETE xmalloc (sizeof (struct next_fnfieldlist));
769 // OBSOLETE make_cleanup (xfree, new_fnlist);
770 // OBSOLETE memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
772 // OBSOLETE /* The following is code to work around cfront generated stabs.
773 // OBSOLETE The stabs contains full mangled name for each field.
774 // OBSOLETE We try to demangle the name and extract the field name out of it. */
776 // OBSOLETE char *dem, *dem_p, *dem_args;
777 // OBSOLETE int dem_len;
778 // OBSOLETE dem = cplus_demangle (fname, DMGL_ANSI | DMGL_PARAMS);
779 // OBSOLETE if (dem != NULL)
781 // OBSOLETE dem_p = strrchr (dem, ':');
782 // OBSOLETE if (dem_p != 0 && *(dem_p - 1) == ':')
784 // OBSOLETE /* get rid of args */
785 // OBSOLETE dem_args = strchr (dem_p, '(');
786 // OBSOLETE if (dem_args == NULL)
787 // OBSOLETE dem_len = strlen (dem_p);
789 // OBSOLETE dem_len = dem_args - dem_p;
790 // OBSOLETE main_fn_name =
791 // OBSOLETE obsavestring (dem_p, dem_len, &objfile->type_obstack);
795 // OBSOLETE main_fn_name =
796 // OBSOLETE obsavestring (fname, strlen (fname), &objfile->type_obstack);
798 // OBSOLETE } /* end of code for cfront work around */
800 // OBSOLETE new_fnlist->fn_fieldlist.name = main_fn_name;
802 // OBSOLETE /*-------------------------------------------------*/
803 // OBSOLETE /* Set up the sublists
804 // OBSOLETE Sublists are stuff like args, static, visibility, etc.
805 // OBSOLETE so in ARM, we have to set that info some other way.
806 // OBSOLETE Multiple sublists happen if overloading
807 // OBSOLETE eg: foo::26=##1;:;2A.;
808 // OBSOLETE In g++, we'd loop here thru all the sublists... */
810 // OBSOLETE new_sublist =
811 // OBSOLETE (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
812 // OBSOLETE make_cleanup (xfree, new_sublist);
813 // OBSOLETE memset (new_sublist, 0, sizeof (struct next_fnfield));
815 // OBSOLETE /* eat 1; from :;2A.; */
816 // OBSOLETE new_sublist->fn_field.type = SYMBOL_TYPE (ref_func); /* normally takes a read_type */
817 // OBSOLETE /* Make this type look like a method stub for gdb */
818 // OBSOLETE TYPE_FLAGS (new_sublist->fn_field.type) |= TYPE_FLAG_STUB;
819 // OBSOLETE TYPE_CODE (new_sublist->fn_field.type) = TYPE_CODE_METHOD;
821 // OBSOLETE /* If this is just a stub, then we don't have the real name here. */
822 // OBSOLETE if (TYPE_STUB (new_sublist->fn_field.type))
824 // OBSOLETE if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
825 // OBSOLETE TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
826 // OBSOLETE new_sublist->fn_field.is_stub = 1;
829 // OBSOLETE /* physname used later in mangling; eg PFs_i,5 for foo__1aFPFs_i
830 // OBSOLETE physname gets strcat'd in order to recreate the onto mangled name */
831 // OBSOLETE pname = get_cfront_method_physname (fname);
832 // OBSOLETE new_sublist->fn_field.physname = savestring (pname, strlen (pname));
835 // OBSOLETE /* Set this member function's visibility fields.
836 // OBSOLETE Unable to distinguish access from stabs definition!
837 // OBSOLETE Assuming public for now. FIXME!
838 // OBSOLETE (for private, set new_sublist->fn_field.is_private = 1,
839 // OBSOLETE for public, set new_sublist->fn_field.is_protected = 1) */
841 // OBSOLETE /* Unable to distinguish const/volatile from stabs definition!
842 // OBSOLETE Assuming normal for now. FIXME! */
844 // OBSOLETE new_sublist->fn_field.is_const = 0;
845 // OBSOLETE new_sublist->fn_field.is_volatile = 0; /* volatile not implemented in cfront */
847 // OBSOLETE /* Set virtual/static function info
848 // OBSOLETE How to get vtable offsets ?
849 // OBSOLETE Assuming normal for now FIXME!!
850 // OBSOLETE For vtables, figure out from whence this virtual function came.
851 // OBSOLETE It may belong to virtual function table of
852 // OBSOLETE one of its baseclasses.
854 // OBSOLETE new_sublist -> fn_field.voffset = vtable offset,
855 // OBSOLETE new_sublist -> fn_field.fcontext = look_ahead_type;
856 // OBSOLETE where look_ahead_type is type of baseclass */
857 // OBSOLETE if (is_static)
858 // OBSOLETE new_sublist->fn_field.voffset = VOFFSET_STATIC;
859 // OBSOLETE else /* normal member function. */
860 // OBSOLETE new_sublist->fn_field.voffset = 0;
861 // OBSOLETE new_sublist->fn_field.fcontext = 0;
864 // OBSOLETE /* Prepare new sublist */
865 // OBSOLETE new_sublist->next = sublist;
866 // OBSOLETE sublist = new_sublist;
867 // OBSOLETE length++;
869 // OBSOLETE /* In g++, we loop thu sublists - now we set from functions. */
870 // OBSOLETE new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
871 // OBSOLETE obstack_alloc (&objfile->type_obstack,
872 // OBSOLETE sizeof (struct fn_field) * length);
873 // OBSOLETE memset (new_fnlist->fn_fieldlist.fn_fields, 0,
874 // OBSOLETE sizeof (struct fn_field) * length);
875 // OBSOLETE for (i = length; (i--, sublist); sublist = sublist->next)
877 // OBSOLETE new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
880 // OBSOLETE new_fnlist->fn_fieldlist.length = length;
881 // OBSOLETE new_fnlist->next = fip->fnlist;
882 // OBSOLETE fip->fnlist = new_fnlist;
883 // OBSOLETE nfn_fields++;
884 // OBSOLETE total_length += length;
885 // OBSOLETE STABS_CONTINUE (pp, objfile); /* handle \\ */
886 // OBSOLETE } /* end of loop */
888 // OBSOLETE if (nfn_fields)
890 // OBSOLETE /* type should already have space */
891 // OBSOLETE TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
892 // OBSOLETE TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields);
893 // OBSOLETE memset (TYPE_FN_FIELDLISTS (type), 0,
894 // OBSOLETE sizeof (struct fn_fieldlist) * nfn_fields);
895 // OBSOLETE TYPE_NFN_FIELDS (type) = nfn_fields;
896 // OBSOLETE TYPE_NFN_FIELDS_TOTAL (type) = total_length;
899 // OBSOLETE /* end of scope for reading member func */
901 // OBSOLETE /* eg: ";;" */
903 // OBSOLETE /* Skip trailing ';' and bump count of number of fields seen */
904 // OBSOLETE if (**pp == ';')
907 // OBSOLETE return 0;
908 // OBSOLETE return 1;
911 // OBSOLETE /* This routine fixes up partial cfront types that were created
912 // OBSOLETE while parsing the stabs. The main need for this function is
913 // OBSOLETE to add information such as methods to classes.
914 // OBSOLETE Examples of "p": "sA;;__ct__1AFv foo__1AFv ;;;" */
916 // OBSOLETE resolve_cfront_continuation (struct objfile *objfile, struct symbol *sym,
919 // OBSOLETE struct symbol *ref_sym = 0;
920 // OBSOLETE char *sname;
921 // OBSOLETE /* snarfed from read_struct_type */
922 // OBSOLETE struct field_info fi;
923 // OBSOLETE struct type *type;
924 // OBSOLETE struct cleanup *back_to;
926 // OBSOLETE /* Need to make sure that fi isn't gunna conflict with struct
927 // OBSOLETE in case struct already had some fnfs */
928 // OBSOLETE fi.list = NULL;
929 // OBSOLETE fi.fnlist = NULL;
930 // OBSOLETE back_to = make_cleanup (null_cleanup, 0);
932 // OBSOLETE /* We only accept structs, classes and unions at the moment.
933 // OBSOLETE Other continuation types include t (typedef), r (long dbl), ...
934 // OBSOLETE We may want to add support for them as well;
935 // OBSOLETE right now they are handled by duplicating the symbol information
936 // OBSOLETE into the type information (see define_symbol) */
937 // OBSOLETE if (*p != 's' /* structs */
938 // OBSOLETE && *p != 'c' /* class */
939 // OBSOLETE && *p != 'u') /* union */
940 // OBSOLETE return 0; /* only handle C++ types */
943 // OBSOLETE /* Get symbol typs name and validate
944 // OBSOLETE eg: p = "A;;__ct__1AFv foo__1AFv ;;;" */
945 // OBSOLETE sname = get_substring (&p, ';');
946 // OBSOLETE if (!sname || strcmp (sname, SYMBOL_NAME (sym)))
947 // OBSOLETE error ("Internal error: base symbol type name does not match\n");
949 // OBSOLETE /* Find symbol's internal gdb reference using demangled_name.
950 // OBSOLETE This is the real sym that we want;
951 // OBSOLETE sym was a temp hack to make debugger happy */
952 // OBSOLETE ref_sym = lookup_symbol (SYMBOL_NAME (sym), 0, STRUCT_NAMESPACE, 0, 0);
953 // OBSOLETE type = SYMBOL_TYPE (ref_sym);
956 // OBSOLETE /* Now read the baseclasses, if any, read the regular C struct or C++
957 // OBSOLETE class member fields, attach the fields to the type, read the C++
958 // OBSOLETE member functions, attach them to the type, and then read any tilde
959 // OBSOLETE field (baseclass specifier for the class holding the main vtable). */
961 // OBSOLETE if (!read_cfront_baseclasses (&fi, &p, type, objfile)
962 // OBSOLETE /* g++ does this next, but cfront already did this:
963 // OBSOLETE || !read_struct_fields (&fi, &p, type, objfile) */
964 // OBSOLETE || !copy_cfront_struct_fields (&fi, type, objfile)
965 // OBSOLETE || !read_cfront_member_functions (&fi, &p, type, objfile)
966 // OBSOLETE || !read_cfront_static_fields (&fi, &p, type, objfile)
967 // OBSOLETE || !attach_fields_to_type (&fi, type, objfile)
968 // OBSOLETE || !attach_fn_fields_to_type (&fi, type)
969 // OBSOLETE /* g++ does this next, but cfront doesn't seem to have this:
970 // OBSOLETE || !read_tilde_fields (&fi, &p, type, objfile) */
973 // OBSOLETE type = error_type (&p, objfile);
976 // OBSOLETE do_cleanups (back_to);
977 // OBSOLETE return 0;
979 // OBSOLETE /* End of code added to support parsing of ARM/Cfront stabs strings */
980 #endif /* OBSOLETE CFront */
982 /* This routine fixes up symbol references/aliases to point to the original
983 symbol definition. Returns 0 on failure, non-zero on success. */
986 resolve_symbol_reference (struct objfile *objfile, struct symbol *sym, char *p)
989 struct symbol *ref_sym = 0;
990 struct alias_list *alias;
992 /* If this is not a symbol reference return now. */
996 /* Use "#<num>" as the name; we'll fix the name later.
997 We stored the original symbol name as "#<id>=<name>"
998 so we can now search for "#<id>" to resolving the reference.
999 We'll fix the names later by removing the "#<id>" or "#<id>=" */
1001 /*---------------------------------------------------------*/
1002 /* Get the reference id number, and
1003 advance p past the names so we can parse the rest.
1004 eg: id=2 for p : "2=", "2=z:r(0,1)" "2:r(0,1);l(#5,#6),l(#7,#4)" */
1005 /*---------------------------------------------------------*/
1007 /* This gets reference name from string. sym may not have a name. */
1009 /* Get the reference number associated with the reference id in the
1010 gdb stab string. From that reference number, get the main/primary
1011 symbol for this alias. */
1012 refnum = process_reference (&p);
1013 ref_sym = ref_search (refnum);
1016 lrs_general_complaint ("symbol for reference not found");
1020 /* Parse the stab of the referencing symbol
1021 now that we have the referenced symbol.
1022 Add it as a new symbol and a link back to the referenced symbol.
1023 eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
1026 /* If the stab symbol table and string contain:
1027 RSYM 0 5 00000000 868 #15=z:r(0,1)
1028 LBRAC 0 0 00000000 899 #5=
1029 SLINE 0 16 00000003 923 #6=
1030 Then the same symbols can be later referenced by:
1031 RSYM 0 5 00000000 927 #15:r(0,1);l(#5,#6)
1032 This is used in live range splitting to:
1033 1) specify that a symbol (#15) is actually just a new storage
1034 class for a symbol (#15=z) which was previously defined.
1035 2) specify that the beginning and ending ranges for a symbol
1036 (#15) are the values of the beginning (#5) and ending (#6)
1039 /* Read number as reference id.
1040 eg: p : "=", "=z:r(0,1)" ":r(0,1);l(#5,#6),l(#7,#4)" */
1041 /* FIXME! Might I want to use SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
1042 in case of "l(0,0)"? */
1044 /*--------------------------------------------------*/
1045 /* Add this symbol to the reference list. */
1046 /*--------------------------------------------------*/
1048 alias = (struct alias_list *) obstack_alloc (&objfile->type_obstack,
1049 sizeof (struct alias_list));
1052 lrs_general_complaint ("Unable to allocate alias list memory");
1059 if (!SYMBOL_ALIASES (ref_sym))
1061 SYMBOL_ALIASES (ref_sym) = alias;
1065 struct alias_list *temp;
1067 /* Get to the end of the list. */
1068 for (temp = SYMBOL_ALIASES (ref_sym);
1075 /* Want to fix up name so that other functions (eg. valops)
1076 will correctly print the name.
1077 Don't add_symbol_to_list so that lookup_symbol won't find it.
1078 nope... needed for fixups. */
1079 SYMBOL_NAME (sym) = SYMBOL_NAME (ref_sym);
1085 /* Structure for storing pointers to reference definitions for fast lookup
1086 during "process_later". */
1095 #define MAX_CHUNK_REFS 100
1096 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
1097 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
1099 static struct ref_map *ref_map;
1101 /* Ptr to free cell in chunk's linked list. */
1102 static int ref_count = 0;
1104 /* Number of chunks malloced. */
1105 static int ref_chunk = 0;
1107 /* This file maintains a cache of stabs aliases found in the symbol
1108 table. If the symbol table changes, this cache must be cleared
1109 or we are left holding onto data in invalid obstacks. */
1111 stabsread_clear_cache (void)
1117 /* Create array of pointers mapping refids to symbols and stab strings.
1118 Add pointers to reference definition symbols and/or their values as we
1119 find them, using their reference numbers as our index.
1120 These will be used later when we resolve references. */
1122 ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value)
1126 if (refnum >= ref_count)
1127 ref_count = refnum + 1;
1128 if (ref_count > ref_chunk * MAX_CHUNK_REFS)
1130 int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS;
1131 int new_chunks = new_slots / MAX_CHUNK_REFS + 1;
1132 ref_map = (struct ref_map *)
1133 xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks));
1134 memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, new_chunks * REF_CHUNK_SIZE);
1135 ref_chunk += new_chunks;
1137 ref_map[refnum].stabs = stabs;
1138 ref_map[refnum].sym = sym;
1139 ref_map[refnum].value = value;
1142 /* Return defined sym for the reference REFNUM. */
1144 ref_search (int refnum)
1146 if (refnum < 0 || refnum > ref_count)
1148 return ref_map[refnum].sym;
1151 /* Return value for the reference REFNUM. */
1154 ref_search_value (int refnum)
1156 if (refnum < 0 || refnum > ref_count)
1158 return ref_map[refnum].value;
1161 /* Parse a reference id in STRING and return the resulting
1162 reference number. Move STRING beyond the reference id. */
1165 process_reference (char **string)
1170 if (**string != '#')
1173 /* Advance beyond the initial '#'. */
1176 /* Read number as reference id. */
1177 while (*p && isdigit (*p))
1179 refnum = refnum * 10 + *p - '0';
1186 /* If STRING defines a reference, store away a pointer to the reference
1187 definition for later use. Return the reference number. */
1190 symbol_reference_defined (char **string)
1195 refnum = process_reference (&p);
1197 /* Defining symbols end in '=' */
1200 /* Symbol is being defined here. */
1206 /* Must be a reference. Either the symbol has already been defined,
1207 or this is a forward reference to it. */
1215 define_symbol (CORE_ADDR valu, char *string, int desc, int type,
1216 struct objfile *objfile)
1218 register struct symbol *sym;
1219 char *p = (char *) find_name_end (string);
1224 /* We would like to eliminate nameless symbols, but keep their types.
1225 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
1226 to type 2, but, should not create a symbol to address that type. Since
1227 the symbol will be nameless, there is no way any user can refer to it. */
1231 /* Ignore syms with empty names. */
1235 /* Ignore old-style symbols from cc -go */
1242 p = strchr (p, ':');
1245 /* If a nameless stab entry, all we need is the type, not the symbol.
1246 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
1247 nameless = (p == string || ((string[0] == ' ') && (string[1] == ':')));
1249 current_symbol = sym = (struct symbol *)
1250 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
1251 memset (sym, 0, sizeof (struct symbol));
1253 switch (type & N_TYPE)
1256 SYMBOL_SECTION (sym) = SECT_OFF_TEXT (objfile);
1259 SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile);
1262 SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile);
1266 if (processing_gcc_compilation)
1268 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
1269 number of bytes occupied by a type or object, which we ignore. */
1270 SYMBOL_LINE (sym) = desc;
1274 SYMBOL_LINE (sym) = 0; /* unknown */
1277 if (is_cplus_marker (string[0]))
1279 /* Special GNU C++ names. */
1283 SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"),
1284 &objfile->symbol_obstack);
1287 case 'v': /* $vtbl_ptr_type */
1288 /* Was: SYMBOL_NAME (sym) = "vptr"; */
1292 SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"),
1293 &objfile->symbol_obstack);
1297 /* This was an anonymous type that was never fixed up. */
1300 #ifdef STATIC_TRANSFORM_NAME
1302 /* SunPRO (3.0 at least) static variable encoding. */
1307 complaint (&symfile_complaints, "Unknown C++ symbol name `%s'",
1309 goto normal; /* Do *something* with it */
1312 else if (string[0] == '#')
1314 /* Special GNU C extension for referencing symbols. */
1318 /* If STRING defines a new reference id, then add it to the
1319 reference map. Else it must be referring to a previously
1320 defined symbol, so add it to the alias list of the previously
1323 refnum = symbol_reference_defined (&s);
1325 ref_add (refnum, sym, string, SYMBOL_VALUE (sym));
1326 else if (!resolve_symbol_reference (objfile, sym, string))
1329 /* S..P contains the name of the symbol. We need to store
1330 the correct name into SYMBOL_NAME. */
1336 SYMBOL_NAME (sym) = (char *)
1337 obstack_alloc (&objfile->symbol_obstack, nlen);
1338 strncpy (SYMBOL_NAME (sym), s, nlen);
1339 SYMBOL_NAME (sym)[nlen] = '\0';
1340 SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
1343 /* FIXME! Want SYMBOL_NAME (sym) = 0;
1344 Get error if leave name 0. So give it something. */
1347 SYMBOL_NAME (sym) = (char *)
1348 obstack_alloc (&objfile->symbol_obstack, nlen);
1349 strncpy (SYMBOL_NAME (sym), string, nlen);
1350 SYMBOL_NAME (sym)[nlen] = '\0';
1351 SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
1354 /* Advance STRING beyond the reference id. */
1360 SYMBOL_LANGUAGE (sym) = current_subfile->language;
1361 SYMBOL_NAME (sym) = (char *)
1362 obstack_alloc (&objfile->symbol_obstack, ((p - string) + 1));
1363 /* Open-coded memcpy--saves function call time. */
1364 /* FIXME: Does it really? Try replacing with simple strcpy and
1365 try it on an executable with a large symbol table. */
1366 /* FIXME: considering that gcc can open code memcpy anyway, I
1367 doubt it. xoxorich. */
1369 register char *p1 = string;
1370 register char *p2 = SYMBOL_NAME (sym);
1378 /* If this symbol is from a C++ compilation, then attempt to cache the
1379 demangled form for future reference. This is a typical time versus
1380 space tradeoff, that was decided in favor of time because it sped up
1381 C++ symbol lookups by a factor of about 20. */
1383 SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
1387 /* Determine the type of name being defined. */
1389 /* Getting GDB to correctly skip the symbol on an undefined symbol
1390 descriptor and not ever dump core is a very dodgy proposition if
1391 we do things this way. I say the acorn RISC machine can just
1392 fix their compiler. */
1393 /* The Acorn RISC machine's compiler can put out locals that don't
1394 start with "234=" or "(3,4)=", so assume anything other than the
1395 deftypes we know how to handle is a local. */
1396 if (!strchr ("cfFGpPrStTvVXCR", *p))
1398 if (isdigit (*p) || *p == '(' || *p == '-')
1407 /* c is a special case, not followed by a type-number.
1408 SYMBOL:c=iVALUE for an integer constant symbol.
1409 SYMBOL:c=rVALUE for a floating constant symbol.
1410 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
1411 e.g. "b:c=e6,0" for "const b = blob1"
1412 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
1415 SYMBOL_CLASS (sym) = LOC_CONST;
1416 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1417 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1418 add_symbol_to_list (sym, &file_symbols);
1426 double d = atof (p);
1429 /* FIXME-if-picky-about-floating-accuracy: Should be using
1430 target arithmetic to get the value. real.c in GCC
1431 probably has the necessary code. */
1433 /* FIXME: lookup_fundamental_type is a hack. We should be
1434 creating a type especially for the type of float constants.
1435 Problem is, what type should it be?
1437 Also, what should the name of this type be? Should we
1438 be using 'S' constants (see stabs.texinfo) instead? */
1440 SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
1443 obstack_alloc (&objfile->symbol_obstack,
1444 TYPE_LENGTH (SYMBOL_TYPE (sym)));
1445 store_typed_floating (dbl_valu, SYMBOL_TYPE (sym), d);
1446 SYMBOL_VALUE_BYTES (sym) = dbl_valu;
1447 SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
1452 /* Defining integer constants this way is kind of silly,
1453 since 'e' constants allows the compiler to give not
1454 only the value, but the type as well. C has at least
1455 int, long, unsigned int, and long long as constant
1456 types; other languages probably should have at least
1457 unsigned as well as signed constants. */
1459 /* We just need one int constant type for all objfiles.
1460 It doesn't depend on languages or anything (arguably its
1461 name should be a language-specific name for a type of
1462 that size, but I'm inclined to say that if the compiler
1463 wants a nice name for the type, it can use 'e'). */
1464 static struct type *int_const_type;
1466 /* Yes, this is as long as a *host* int. That is because we
1468 if (int_const_type == NULL)
1470 init_type (TYPE_CODE_INT,
1471 sizeof (int) * HOST_CHAR_BIT / TARGET_CHAR_BIT, 0,
1473 (struct objfile *) NULL);
1474 SYMBOL_TYPE (sym) = int_const_type;
1475 SYMBOL_VALUE (sym) = atoi (p);
1476 SYMBOL_CLASS (sym) = LOC_CONST;
1480 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
1481 can be represented as integral.
1482 e.g. "b:c=e6,0" for "const b = blob1"
1483 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
1485 SYMBOL_CLASS (sym) = LOC_CONST;
1486 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1490 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1495 /* If the value is too big to fit in an int (perhaps because
1496 it is unsigned), or something like that, we silently get
1497 a bogus value. The type and everything else about it is
1498 correct. Ideally, we should be using whatever we have
1499 available for parsing unsigned and long long values,
1501 SYMBOL_VALUE (sym) = atoi (p);
1506 SYMBOL_CLASS (sym) = LOC_CONST;
1507 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1510 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1511 add_symbol_to_list (sym, &file_symbols);
1515 /* The name of a caught exception. */
1516 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1517 SYMBOL_CLASS (sym) = LOC_LABEL;
1518 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1519 SYMBOL_VALUE_ADDRESS (sym) = valu;
1520 add_symbol_to_list (sym, &local_symbols);
1524 /* A static function definition. */
1525 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1526 SYMBOL_CLASS (sym) = LOC_BLOCK;
1527 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1528 add_symbol_to_list (sym, &file_symbols);
1529 /* fall into process_function_types. */
1531 process_function_types:
1532 /* Function result types are described as the result type in stabs.
1533 We need to convert this to the function-returning-type-X type
1534 in GDB. E.g. "int" is converted to "function returning int". */
1535 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC)
1536 SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym));
1538 /* All functions in C++ have prototypes. Stabs does not offer an
1539 explicit way to identify prototyped or unprototyped functions,
1540 but both GCC and Sun CC emit stabs for the "call-as" type rather
1541 than the "declared-as" type for unprototyped functions, so
1542 we treat all functions as if they were prototyped. This is used
1543 primarily for promotion when calling the function from GDB. */
1544 TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED;
1546 /* fall into process_prototype_types */
1548 process_prototype_types:
1549 /* Sun acc puts declared types of arguments here. */
1552 struct type *ftype = SYMBOL_TYPE (sym);
1557 /* Obtain a worst case guess for the number of arguments
1558 by counting the semicolons. */
1565 /* Allocate parameter information fields and fill them in. */
1566 TYPE_FIELDS (ftype) = (struct field *)
1567 TYPE_ALLOC (ftype, nsemi * sizeof (struct field));
1572 /* A type number of zero indicates the start of varargs.
1573 FIXME: GDB currently ignores vararg functions. */
1574 if (p[0] == '0' && p[1] == '\0')
1576 ptype = read_type (&p, objfile);
1578 /* The Sun compilers mark integer arguments, which should
1579 be promoted to the width of the calling conventions, with
1580 a type which references itself. This type is turned into
1581 a TYPE_CODE_VOID type by read_type, and we have to turn
1582 it back into builtin_type_int here.
1583 FIXME: Do we need a new builtin_type_promoted_int_arg ? */
1584 if (TYPE_CODE (ptype) == TYPE_CODE_VOID)
1585 ptype = builtin_type_int;
1586 TYPE_FIELD_TYPE (ftype, nparams) = ptype;
1587 TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0;
1589 TYPE_NFIELDS (ftype) = nparams;
1590 TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED;
1595 /* A global function definition. */
1596 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1597 SYMBOL_CLASS (sym) = LOC_BLOCK;
1598 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1599 add_symbol_to_list (sym, &global_symbols);
1600 goto process_function_types;
1603 /* For a class G (global) symbol, it appears that the
1604 value is not correct. It is necessary to search for the
1605 corresponding linker definition to find the value.
1606 These definitions appear at the end of the namelist. */
1607 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1608 SYMBOL_CLASS (sym) = LOC_STATIC;
1609 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1610 /* Don't add symbol references to global_sym_chain.
1611 Symbol references don't have valid names and wont't match up with
1612 minimal symbols when the global_sym_chain is relocated.
1613 We'll fixup symbol references when we fixup the defining symbol. */
1614 if (SYMBOL_NAME (sym) && SYMBOL_NAME (sym)[0] != '#')
1616 i = hashname (SYMBOL_NAME (sym));
1617 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
1618 global_sym_chain[i] = sym;
1620 add_symbol_to_list (sym, &global_symbols);
1623 /* This case is faked by a conditional above,
1624 when there is no code letter in the dbx data.
1625 Dbx data never actually contains 'l'. */
1628 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1629 SYMBOL_CLASS (sym) = LOC_LOCAL;
1630 SYMBOL_VALUE (sym) = valu;
1631 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1632 add_symbol_to_list (sym, &local_symbols);
1637 /* pF is a two-letter code that means a function parameter in Fortran.
1638 The type-number specifies the type of the return value.
1639 Translate it into a pointer-to-function type. */
1643 = lookup_pointer_type
1644 (lookup_function_type (read_type (&p, objfile)));
1647 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1649 /* Normally this is a parameter, a LOC_ARG. On the i960, it
1650 can also be a LOC_LOCAL_ARG depending on symbol type. */
1651 #ifndef DBX_PARM_SYMBOL_CLASS
1652 #define DBX_PARM_SYMBOL_CLASS(type) LOC_ARG
1655 SYMBOL_CLASS (sym) = DBX_PARM_SYMBOL_CLASS (type);
1656 SYMBOL_VALUE (sym) = valu;
1657 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1658 add_symbol_to_list (sym, &local_symbols);
1660 if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG)
1662 /* On little-endian machines, this crud is never necessary,
1663 and, if the extra bytes contain garbage, is harmful. */
1667 /* If it's gcc-compiled, if it says `short', believe it. */
1668 if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION)
1671 if (!BELIEVE_PCC_PROMOTION)
1673 /* This is the signed type which arguments get promoted to. */
1674 static struct type *pcc_promotion_type;
1675 /* This is the unsigned type which arguments get promoted to. */
1676 static struct type *pcc_unsigned_promotion_type;
1678 /* Call it "int" because this is mainly C lossage. */
1679 if (pcc_promotion_type == NULL)
1680 pcc_promotion_type =
1681 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
1684 if (pcc_unsigned_promotion_type == NULL)
1685 pcc_unsigned_promotion_type =
1686 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
1687 TYPE_FLAG_UNSIGNED, "unsigned int", NULL);
1689 if (BELIEVE_PCC_PROMOTION_TYPE)
1691 /* This is defined on machines (e.g. sparc) where we
1692 should believe the type of a PCC 'short' argument,
1693 but shouldn't believe the address (the address is the
1694 address of the corresponding int).
1696 My guess is that this correction, as opposed to
1697 changing the parameter to an 'int' (as done below,
1698 for PCC on most machines), is the right thing to do
1699 on all machines, but I don't want to risk breaking
1700 something that already works. On most PCC machines,
1701 the sparc problem doesn't come up because the calling
1702 function has to zero the top bytes (not knowing
1703 whether the called function wants an int or a short),
1704 so there is little practical difference between an
1705 int and a short (except perhaps what happens when the
1706 GDB user types "print short_arg = 0x10000;").
1708 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the
1709 compiler actually produces the correct address (we
1710 don't need to fix it up). I made this code adapt so
1711 that it will offset the symbol if it was pointing at
1712 an int-aligned location and not otherwise. This way
1713 you can use the same gdb for 4.0.x and 4.1 systems.
1715 If the parameter is shorter than an int, and is
1716 integral (e.g. char, short, or unsigned equivalent),
1717 and is claimed to be passed on an integer boundary,
1718 don't believe it! Offset the parameter's address to
1719 the tail-end of that integer. */
1721 if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
1722 && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT
1723 && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (pcc_promotion_type))
1725 SYMBOL_VALUE (sym) += TYPE_LENGTH (pcc_promotion_type)
1726 - TYPE_LENGTH (SYMBOL_TYPE (sym));
1732 /* If PCC says a parameter is a short or a char,
1733 it is really an int. */
1734 if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
1735 && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
1738 TYPE_UNSIGNED (SYMBOL_TYPE (sym))
1739 ? pcc_unsigned_promotion_type
1740 : pcc_promotion_type;
1747 /* acc seems to use P to declare the prototypes of functions that
1748 are referenced by this file. gdb is not prepared to deal
1749 with this extra information. FIXME, it ought to. */
1752 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1753 goto process_prototype_types;
1758 /* Parameter which is in a register. */
1759 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1760 SYMBOL_CLASS (sym) = LOC_REGPARM;
1761 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1762 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1764 reg_value_complaint (SYMBOL_VALUE (sym),
1765 NUM_REGS + NUM_PSEUDO_REGS,
1766 SYMBOL_SOURCE_NAME (sym));
1767 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1769 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1770 add_symbol_to_list (sym, &local_symbols);
1774 /* Register variable (either global or local). */
1775 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1776 SYMBOL_CLASS (sym) = LOC_REGISTER;
1777 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1778 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1780 reg_value_complaint (SYMBOL_VALUE (sym),
1781 NUM_REGS + NUM_PSEUDO_REGS,
1782 SYMBOL_SOURCE_NAME (sym));
1783 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1785 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1786 if (within_function)
1788 /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same
1789 name to represent an argument passed in a register.
1790 GCC uses 'P' for the same case. So if we find such a symbol pair
1791 we combine it into one 'P' symbol. For Sun cc we need to do this
1792 regardless of REG_STRUCT_HAS_ADDR, because the compiler puts out
1793 the 'p' symbol even if it never saves the argument onto the stack.
1795 On most machines, we want to preserve both symbols, so that
1796 we can still get information about what is going on with the
1797 stack (VAX for computing args_printed, using stack slots instead
1798 of saved registers in backtraces, etc.).
1800 Note that this code illegally combines
1801 main(argc) struct foo argc; { register struct foo argc; }
1802 but this case is considered pathological and causes a warning
1803 from a decent compiler. */
1806 && local_symbols->nsyms > 0
1807 #ifndef USE_REGISTER_NOT_ARG
1808 && REG_STRUCT_HAS_ADDR_P ()
1809 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation,
1811 && (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
1812 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION
1813 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_SET
1814 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_BITSTRING)
1818 struct symbol *prev_sym;
1819 prev_sym = local_symbols->symbol[local_symbols->nsyms - 1];
1820 if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG
1821 || SYMBOL_CLASS (prev_sym) == LOC_ARG)
1822 && STREQ (SYMBOL_NAME (prev_sym), SYMBOL_NAME (sym)))
1824 SYMBOL_CLASS (prev_sym) = LOC_REGPARM;
1825 /* Use the type from the LOC_REGISTER; that is the type
1826 that is actually in that register. */
1827 SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym);
1828 SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym);
1833 add_symbol_to_list (sym, &local_symbols);
1836 add_symbol_to_list (sym, &file_symbols);
1840 /* Static symbol at top level of file */
1841 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1842 SYMBOL_CLASS (sym) = LOC_STATIC;
1843 SYMBOL_VALUE_ADDRESS (sym) = valu;
1844 #ifdef STATIC_TRANSFORM_NAME
1845 if (IS_STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym)))
1847 struct minimal_symbol *msym;
1848 msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, objfile);
1851 SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym));
1852 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
1856 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1857 add_symbol_to_list (sym, &file_symbols);
1862 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1864 /* For a nameless type, we don't want a create a symbol, thus we
1865 did not use `sym'. Return without further processing. */
1869 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1870 SYMBOL_VALUE (sym) = valu;
1871 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
1872 /* C++ vagaries: we may have a type which is derived from
1873 a base type which did not have its name defined when the
1874 derived class was output. We fill in the derived class's
1875 base part member's name here in that case. */
1876 if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL)
1877 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
1878 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)
1879 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)))
1882 for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--)
1883 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0)
1884 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) =
1885 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j));
1888 if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL)
1890 /* gcc-2.6 or later (when using -fvtable-thunks)
1891 emits a unique named type for a vtable entry.
1892 Some gdb code depends on that specific name. */
1893 extern const char vtbl_ptr_name[];
1895 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR
1896 && strcmp (SYMBOL_NAME (sym), vtbl_ptr_name))
1897 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC)
1899 /* If we are giving a name to a type such as "pointer to
1900 foo" or "function returning foo", we better not set
1901 the TYPE_NAME. If the program contains "typedef char
1902 *caddr_t;", we don't want all variables of type char
1903 * to print as caddr_t. This is not just a
1904 consequence of GDB's type management; PCC and GCC (at
1905 least through version 2.4) both output variables of
1906 either type char * or caddr_t with the type number
1907 defined in the 't' symbol for caddr_t. If a future
1908 compiler cleans this up it GDB is not ready for it
1909 yet, but if it becomes ready we somehow need to
1910 disable this check (without breaking the PCC/GCC2.4
1915 Fortunately, this check seems not to be necessary
1916 for anything except pointers or functions. */
1917 /* ezannoni: 2000-10-26. This seems to apply for
1918 versions of gcc older than 2.8. This was the original
1919 problem: with the following code gdb would tell that
1920 the type for name1 is caddr_t, and func is char()
1921 typedef char *caddr_t;
1933 /* Pascal accepts names for pointer types. */
1934 if (current_subfile->language == language_pascal)
1936 TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym);
1940 TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NAME (sym);
1943 add_symbol_to_list (sym, &file_symbols);
1947 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1948 by 't' which means we are typedef'ing it as well. */
1949 synonym = *p == 't';
1953 #if 0 /* OBSOLETE CFront */
1954 // OBSOLETE /* The semantics of C++ state that "struct foo { ... }" also defines
1955 // OBSOLETE a typedef for "foo". Unfortunately, cfront never makes the typedef
1956 // OBSOLETE when translating C++ into C. We make the typedef here so that
1957 // OBSOLETE "ptype foo" works as expected for cfront translated code. */
1958 // OBSOLETE else if ((current_subfile->language == language_cplus)
1959 // OBSOLETE || (current_subfile->language == language_objc))
1960 // OBSOLETE synonym = 1;
1961 #endif /* OBSOLETE CFront */
1963 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1965 /* For a nameless type, we don't want a create a symbol, thus we
1966 did not use `sym'. Return without further processing. */
1970 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1971 SYMBOL_VALUE (sym) = valu;
1972 SYMBOL_NAMESPACE (sym) = STRUCT_NAMESPACE;
1973 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0)
1974 TYPE_TAG_NAME (SYMBOL_TYPE (sym))
1975 = obconcat (&objfile->type_obstack, "", "", SYMBOL_NAME (sym));
1976 add_symbol_to_list (sym, &file_symbols);
1980 /* Clone the sym and then modify it. */
1981 register struct symbol *typedef_sym = (struct symbol *)
1982 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
1983 *typedef_sym = *sym;
1984 SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF;
1985 SYMBOL_VALUE (typedef_sym) = valu;
1986 SYMBOL_NAMESPACE (typedef_sym) = VAR_NAMESPACE;
1987 if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
1988 TYPE_NAME (SYMBOL_TYPE (sym))
1989 = obconcat (&objfile->type_obstack, "", "", SYMBOL_NAME (sym));
1990 add_symbol_to_list (typedef_sym, &file_symbols);
1995 /* Static symbol of local scope */
1996 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1997 SYMBOL_CLASS (sym) = LOC_STATIC;
1998 SYMBOL_VALUE_ADDRESS (sym) = valu;
1999 #ifdef STATIC_TRANSFORM_NAME
2000 if (IS_STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym)))
2002 struct minimal_symbol *msym;
2003 msym = lookup_minimal_symbol (SYMBOL_NAME (sym), NULL, objfile);
2006 SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (SYMBOL_NAME (sym));
2007 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
2011 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
2012 add_symbol_to_list (sym, &local_symbols);
2016 /* Reference parameter */
2017 SYMBOL_TYPE (sym) = read_type (&p, objfile);
2018 SYMBOL_CLASS (sym) = LOC_REF_ARG;
2019 SYMBOL_VALUE (sym) = valu;
2020 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
2021 add_symbol_to_list (sym, &local_symbols);
2025 /* Reference parameter which is in a register. */
2026 SYMBOL_TYPE (sym) = read_type (&p, objfile);
2027 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
2028 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
2029 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
2031 reg_value_complaint (SYMBOL_VALUE (sym),
2032 NUM_REGS + NUM_PSEUDO_REGS,
2033 SYMBOL_SOURCE_NAME (sym));
2034 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
2036 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
2037 add_symbol_to_list (sym, &local_symbols);
2041 /* This is used by Sun FORTRAN for "function result value".
2042 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
2043 that Pascal uses it too, but when I tried it Pascal used
2044 "x:3" (local symbol) instead. */
2045 SYMBOL_TYPE (sym) = read_type (&p, objfile);
2046 SYMBOL_CLASS (sym) = LOC_LOCAL;
2047 SYMBOL_VALUE (sym) = valu;
2048 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
2049 add_symbol_to_list (sym, &local_symbols);
2051 #if 0 /* OBSOLETE CFront */
2052 // OBSOLETE /* New code added to support cfront stabs strings.
2053 // OBSOLETE Note: case 'P' already handled above */
2054 // OBSOLETE case 'Z':
2055 // OBSOLETE /* Cfront type continuation coming up!
2056 // OBSOLETE Find the original definition and add to it.
2057 // OBSOLETE We'll have to do this for the typedef too,
2058 // OBSOLETE since we cloned the symbol to define a type in read_type.
2059 // OBSOLETE Stabs info examples:
2060 // OBSOLETE __1C :Ztl
2061 // OBSOLETE foo__1CFv :ZtF (first def foo__1CFv:F(0,3);(0,24))
2062 // OBSOLETE C:ZsC;;__ct__1CFv func1__1CFv func2__1CFv ... ;;;
2063 // OBSOLETE where C is the name of the class.
2064 // OBSOLETE Unfortunately, we can't lookup the original symbol yet 'cuz
2065 // OBSOLETE we haven't finished reading all the symbols.
2066 // OBSOLETE Instead, we save it for processing later */
2067 // OBSOLETE process_later (sym, p, resolve_cfront_continuation);
2068 // OBSOLETE SYMBOL_TYPE (sym) = error_type (&p, objfile); /* FIXME! change later */
2069 // OBSOLETE SYMBOL_CLASS (sym) = LOC_CONST;
2070 // OBSOLETE SYMBOL_VALUE (sym) = 0;
2071 // OBSOLETE SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
2072 // OBSOLETE /* Don't add to list - we'll delete it later when
2073 // OBSOLETE we add the continuation to the real sym */
2074 // OBSOLETE return sym;
2075 // OBSOLETE /* End of new code added to support cfront stabs strings */
2076 #endif /* OBSOLETE CFront */
2079 SYMBOL_TYPE (sym) = error_type (&p, objfile);
2080 SYMBOL_CLASS (sym) = LOC_CONST;
2081 SYMBOL_VALUE (sym) = 0;
2082 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
2083 add_symbol_to_list (sym, &file_symbols);
2087 /* When passing structures to a function, some systems sometimes pass
2088 the address in a register, not the structure itself. */
2090 if (REG_STRUCT_HAS_ADDR_P ()
2091 && REG_STRUCT_HAS_ADDR (processing_gcc_compilation, SYMBOL_TYPE (sym))
2092 && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG))
2094 struct type *symbol_type = check_typedef (SYMBOL_TYPE (sym));
2096 if ((TYPE_CODE (symbol_type) == TYPE_CODE_STRUCT)
2097 || (TYPE_CODE (symbol_type) == TYPE_CODE_UNION)
2098 || (TYPE_CODE (symbol_type) == TYPE_CODE_BITSTRING)
2099 || (TYPE_CODE (symbol_type) == TYPE_CODE_SET))
2101 /* If REG_STRUCT_HAS_ADDR yields non-zero we have to convert
2102 LOC_REGPARM to LOC_REGPARM_ADDR for structures and unions. */
2103 if (SYMBOL_CLASS (sym) == LOC_REGPARM)
2104 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
2105 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
2106 and subsequent arguments on the sparc, for example). */
2107 else if (SYMBOL_CLASS (sym) == LOC_ARG)
2108 SYMBOL_CLASS (sym) = LOC_REF_ARG;
2112 /* Is there more to parse? For example LRS/alias information? */
2113 while (*p && *p == ';')
2116 if (*p && p[0] == 'l' && p[1] == '(')
2118 /* GNU extensions for live range splitting may be appended to
2119 the end of the stab string. eg. "l(#1,#2);l(#3,#5)" */
2121 /* Resolve the live range and add it to SYM's live range list. */
2122 if (!resolve_live_range (objfile, sym, p))
2125 /* Find end of live range info. */
2126 p = strchr (p, ')');
2127 if (!*p || *p != ')')
2129 lrs_general_complaint ("live range format not recognized");
2138 /* Add the live range found in P to the symbol SYM in objfile OBJFILE. Returns
2139 non-zero on success, zero otherwise. */
2142 resolve_live_range (struct objfile *objfile, struct symbol *sym, char *p)
2145 CORE_ADDR start, end;
2147 /* Sanity check the beginning of the stabs string. */
2148 if (!*p || *p != 'l')
2150 lrs_general_complaint ("live range string 1");
2155 if (!*p || *p != '(')
2157 lrs_general_complaint ("live range string 2");
2162 /* Get starting value of range and advance P past the reference id.
2164 ?!? In theory, the process_reference should never fail, but we should
2165 catch that case just in case the compiler scrogged the stabs. */
2166 refnum = process_reference (&p);
2167 start = ref_search_value (refnum);
2170 lrs_general_complaint ("Live range symbol not found 1");
2174 if (!*p || *p != ',')
2176 lrs_general_complaint ("live range string 3");
2181 /* Get ending value of range and advance P past the reference id.
2183 ?!? In theory, the process_reference should never fail, but we should
2184 catch that case just in case the compiler scrogged the stabs. */
2185 refnum = process_reference (&p);
2186 end = ref_search_value (refnum);
2189 lrs_general_complaint ("Live range symbol not found 2");
2193 if (!*p || *p != ')')
2195 lrs_general_complaint ("live range string 4");
2199 /* Now that we know the bounds of the range, add it to the
2201 add_live_range (objfile, sym, start, end);
2206 /* Add a new live range defined by START and END to the symbol SYM
2207 in objfile OBJFILE. */
2210 add_live_range (struct objfile *objfile, struct symbol *sym, CORE_ADDR start,
2213 struct range_list *r, *rs;
2217 lrs_general_complaint ("end of live range follows start");
2221 /* Alloc new live range structure. */
2222 r = (struct range_list *)
2223 obstack_alloc (&objfile->type_obstack,
2224 sizeof (struct range_list));
2229 /* Append this range to the symbol's range list. */
2230 if (!SYMBOL_RANGES (sym))
2231 SYMBOL_RANGES (sym) = r;
2234 /* Get the last range for the symbol. */
2235 for (rs = SYMBOL_RANGES (sym); rs->next; rs = rs->next)
2242 /* Skip rest of this symbol and return an error type.
2244 General notes on error recovery: error_type always skips to the
2245 end of the symbol (modulo cretinous dbx symbol name continuation).
2246 Thus code like this:
2248 if (*(*pp)++ != ';')
2249 return error_type (pp, objfile);
2251 is wrong because if *pp starts out pointing at '\0' (typically as the
2252 result of an earlier error), it will be incremented to point to the
2253 start of the next symbol, which might produce strange results, at least
2254 if you run off the end of the string table. Instead use
2257 return error_type (pp, objfile);
2263 foo = error_type (pp, objfile);
2267 And in case it isn't obvious, the point of all this hair is so the compiler
2268 can define new types and new syntaxes, and old versions of the
2269 debugger will be able to read the new symbol tables. */
2271 static struct type *
2272 error_type (char **pp, struct objfile *objfile)
2274 complaint (&symfile_complaints, "couldn't parse type; debugger out of date?");
2277 /* Skip to end of symbol. */
2278 while (**pp != '\0')
2283 /* Check for and handle cretinous dbx symbol name continuation! */
2284 if ((*pp)[-1] == '\\' || (*pp)[-1] == '?')
2286 *pp = next_symbol_text (objfile);
2293 return (builtin_type_error);
2297 /* Read type information or a type definition; return the type. Even
2298 though this routine accepts either type information or a type
2299 definition, the distinction is relevant--some parts of stabsread.c
2300 assume that type information starts with a digit, '-', or '(' in
2301 deciding whether to call read_type. */
2304 read_type (register char **pp, struct objfile *objfile)
2306 register struct type *type = 0;
2309 char type_descriptor;
2311 /* Size in bits of type if specified by a type attribute, or -1 if
2312 there is no size attribute. */
2315 /* Used to distinguish string and bitstring from char-array and set. */
2318 /* Used to distinguish vector from array. */
2321 /* Read type number if present. The type number may be omitted.
2322 for instance in a two-dimensional array declared with type
2323 "ar1;1;10;ar1;1;10;4". */
2324 if ((**pp >= '0' && **pp <= '9')
2328 if (read_type_number (pp, typenums) != 0)
2329 return error_type (pp, objfile);
2331 /* Type is not being defined here. Either it already exists,
2332 or this is a forward reference to it. dbx_alloc_type handles
2335 return dbx_alloc_type (typenums, objfile);
2337 /* Type is being defined here. */
2339 Also skip the type descriptor - we get it below with (*pp)[-1]. */
2344 /* 'typenums=' not present, type is anonymous. Read and return
2345 the definition, but don't put it in the type vector. */
2346 typenums[0] = typenums[1] = -1;
2351 type_descriptor = (*pp)[-1];
2352 switch (type_descriptor)
2356 enum type_code code;
2358 /* Used to index through file_symbols. */
2359 struct pending *ppt;
2362 /* Name including "struct", etc. */
2366 char *from, *to, *p, *q1, *q2;
2368 /* Set the type code according to the following letter. */
2372 code = TYPE_CODE_STRUCT;
2375 code = TYPE_CODE_UNION;
2378 code = TYPE_CODE_ENUM;
2382 /* Complain and keep going, so compilers can invent new
2383 cross-reference types. */
2384 complaint (&symfile_complaints,
2385 "Unrecognized cross-reference type `%c'", (*pp)[0]);
2386 code = TYPE_CODE_STRUCT;
2391 q1 = strchr (*pp, '<');
2392 p = strchr (*pp, ':');
2394 return error_type (pp, objfile);
2395 if (q1 && p > q1 && p[1] == ':')
2397 int nesting_level = 0;
2398 for (q2 = q1; *q2; q2++)
2402 else if (*q2 == '>')
2404 else if (*q2 == ':' && nesting_level == 0)
2409 return error_type (pp, objfile);
2412 (char *) obstack_alloc (&objfile->type_obstack, p - *pp + 1);
2414 /* Copy the name. */
2420 /* Set the pointer ahead of the name which we just read, and
2425 /* Now check to see whether the type has already been
2426 declared. This was written for arrays of cross-referenced
2427 types before we had TYPE_CODE_TARGET_STUBBED, so I'm pretty
2428 sure it is not necessary anymore. But it might be a good
2429 idea, to save a little memory. */
2431 for (ppt = file_symbols; ppt; ppt = ppt->next)
2432 for (i = 0; i < ppt->nsyms; i++)
2434 struct symbol *sym = ppt->symbol[i];
2436 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
2437 && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE
2438 && (TYPE_CODE (SYMBOL_TYPE (sym)) == code)
2439 && STREQ (SYMBOL_NAME (sym), type_name))
2441 obstack_free (&objfile->type_obstack, type_name);
2442 type = SYMBOL_TYPE (sym);
2447 /* Didn't find the type to which this refers, so we must
2448 be dealing with a forward reference. Allocate a type
2449 structure for it, and keep track of it so we can
2450 fill in the rest of the fields when we get the full
2452 type = dbx_alloc_type (typenums, objfile);
2453 TYPE_CODE (type) = code;
2454 TYPE_TAG_NAME (type) = type_name;
2455 INIT_CPLUS_SPECIFIC (type);
2456 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
2458 add_undefined_type (type);
2462 case '-': /* RS/6000 built-in type */
2476 /* We deal with something like t(1,2)=(3,4)=... which
2477 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
2479 /* Allocate and enter the typedef type first.
2480 This handles recursive types. */
2481 type = dbx_alloc_type (typenums, objfile);
2482 TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
2484 struct type *xtype = read_type (pp, objfile);
2487 /* It's being defined as itself. That means it is "void". */
2488 TYPE_CODE (type) = TYPE_CODE_VOID;
2489 TYPE_LENGTH (type) = 1;
2491 else if (type_size >= 0 || is_string)
2493 /* This is the absolute wrong way to construct types. Every
2494 other debug format has found a way around this problem and
2495 the related problems with unnecessarily stubbed types;
2496 someone motivated should attempt to clean up the issue
2497 here as well. Once a type pointed to has been created it
2498 should not be modified.
2500 Well, it's not *absolutely* wrong. Constructing recursive
2501 types (trees, linked lists) necessarily entails modifying
2502 types after creating them. Constructing any loop structure
2503 entails side effects. The Dwarf 2 reader does handle this
2504 more gracefully (it never constructs more than once
2505 instance of a type object, so it doesn't have to copy type
2506 objects wholesale), but it still mutates type objects after
2507 other folks have references to them.
2509 Keep in mind that this circularity/mutation issue shows up
2510 at the source language level, too: C's "incomplete types",
2511 for example. So the proper cleanup, I think, would be to
2512 limit GDB's type smashing to match exactly those required
2513 by the source language. So GDB could have a
2514 "complete_this_type" function, but never create unnecessary
2515 copies of a type otherwise. */
2516 replace_type (type, xtype);
2517 TYPE_NAME (type) = NULL;
2518 TYPE_TAG_NAME (type) = NULL;
2522 TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
2523 TYPE_TARGET_TYPE (type) = xtype;
2528 /* In the following types, we must be sure to overwrite any existing
2529 type that the typenums refer to, rather than allocating a new one
2530 and making the typenums point to the new one. This is because there
2531 may already be pointers to the existing type (if it had been
2532 forward-referenced), and we must change it to a pointer, function,
2533 reference, or whatever, *in-place*. */
2535 case '*': /* Pointer to another type */
2536 type1 = read_type (pp, objfile);
2537 type = make_pointer_type (type1, dbx_lookup_type (typenums));
2540 case '&': /* Reference to another type */
2541 type1 = read_type (pp, objfile);
2542 type = make_reference_type (type1, dbx_lookup_type (typenums));
2545 case 'f': /* Function returning another type */
2546 type1 = read_type (pp, objfile);
2547 type = make_function_type (type1, dbx_lookup_type (typenums));
2550 case 'g': /* Prototyped function. (Sun) */
2552 /* Unresolved questions:
2554 - According to Sun's ``STABS Interface Manual'', for 'f'
2555 and 'F' symbol descriptors, a `0' in the argument type list
2556 indicates a varargs function. But it doesn't say how 'g'
2557 type descriptors represent that info. Someone with access
2558 to Sun's toolchain should try it out.
2560 - According to the comment in define_symbol (search for
2561 `process_prototype_types:'), Sun emits integer arguments as
2562 types which ref themselves --- like `void' types. Do we
2563 have to deal with that here, too? Again, someone with
2564 access to Sun's toolchain should try it out and let us
2567 const char *type_start = (*pp) - 1;
2568 struct type *return_type = read_type (pp, objfile);
2569 struct type *func_type
2570 = make_function_type (return_type, dbx_lookup_type (typenums));
2573 struct type_list *next;
2577 while (**pp && **pp != '#')
2579 struct type *arg_type = read_type (pp, objfile);
2580 struct type_list *new = alloca (sizeof (*new));
2581 new->type = arg_type;
2582 new->next = arg_types;
2590 complaint (&symfile_complaints,
2591 "Prototyped function type didn't end arguments with `#':\n%s",
2595 /* If there is just one argument whose type is `void', then
2596 that's just an empty argument list. */
2598 && ! arg_types->next
2599 && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID)
2602 TYPE_FIELDS (func_type)
2603 = (struct field *) TYPE_ALLOC (func_type,
2604 num_args * sizeof (struct field));
2605 memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field));
2608 struct type_list *t;
2610 /* We stuck each argument type onto the front of the list
2611 when we read it, so the list is reversed. Build the
2612 fields array right-to-left. */
2613 for (t = arg_types, i = num_args - 1; t; t = t->next, i--)
2614 TYPE_FIELD_TYPE (func_type, i) = t->type;
2616 TYPE_NFIELDS (func_type) = num_args;
2617 TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED;
2623 case 'k': /* Const qualifier on some type (Sun) */
2624 type = read_type (pp, objfile);
2625 type = make_cv_type (1, TYPE_VOLATILE (type), type,
2626 dbx_lookup_type (typenums));
2629 case 'B': /* Volatile qual on some type (Sun) */
2630 type = read_type (pp, objfile);
2631 type = make_cv_type (TYPE_CONST (type), 1, type,
2632 dbx_lookup_type (typenums));
2636 if (isdigit (**pp) || **pp == '(' || **pp == '-')
2637 { /* Member (class & variable) type */
2638 /* FIXME -- we should be doing smash_to_XXX types here. */
2640 struct type *domain = read_type (pp, objfile);
2641 struct type *memtype;
2644 /* Invalid member type data format. */
2645 return error_type (pp, objfile);
2648 memtype = read_type (pp, objfile);
2649 type = dbx_alloc_type (typenums, objfile);
2650 smash_to_member_type (type, domain, memtype);
2653 /* type attribute */
2656 /* Skip to the semicolon. */
2657 while (**pp != ';' && **pp != '\0')
2660 return error_type (pp, objfile);
2662 ++ * pp; /* Skip the semicolon. */
2666 case 's': /* Size attribute */
2667 type_size = atoi (attr + 1);
2672 case 'S': /* String attribute */
2673 /* FIXME: check to see if following type is array? */
2677 case 'V': /* Vector attribute */
2678 /* FIXME: check to see if following type is array? */
2683 /* Ignore unrecognized type attributes, so future compilers
2684 can invent new ones. */
2692 case '#': /* Method (class & fn) type */
2693 if ((*pp)[0] == '#')
2695 /* We'll get the parameter types from the name. */
2696 struct type *return_type;
2699 return_type = read_type (pp, objfile);
2700 if (*(*pp)++ != ';')
2701 complaint (&symfile_complaints,
2702 "invalid (minimal) member type data format at symtab pos %d.",
2704 type = allocate_stub_method (return_type);
2705 if (typenums[0] != -1)
2706 *dbx_lookup_type (typenums) = type;
2710 struct type *domain = read_type (pp, objfile);
2711 struct type *return_type;
2716 /* Invalid member type data format. */
2717 return error_type (pp, objfile);
2721 return_type = read_type (pp, objfile);
2722 args = read_args (pp, ';', objfile, &nargs, &varargs);
2723 type = dbx_alloc_type (typenums, objfile);
2724 smash_to_method_type (type, domain, return_type, args,
2729 case 'r': /* Range type */
2730 type = read_range_type (pp, typenums, objfile);
2731 if (typenums[0] != -1)
2732 *dbx_lookup_type (typenums) = type;
2737 /* Sun ACC builtin int type */
2738 type = read_sun_builtin_type (pp, typenums, objfile);
2739 if (typenums[0] != -1)
2740 *dbx_lookup_type (typenums) = type;
2744 case 'R': /* Sun ACC builtin float type */
2745 type = read_sun_floating_type (pp, typenums, objfile);
2746 if (typenums[0] != -1)
2747 *dbx_lookup_type (typenums) = type;
2750 case 'e': /* Enumeration type */
2751 type = dbx_alloc_type (typenums, objfile);
2752 type = read_enum_type (pp, type, objfile);
2753 if (typenums[0] != -1)
2754 *dbx_lookup_type (typenums) = type;
2757 case 's': /* Struct type */
2758 case 'u': /* Union type */
2760 enum type_code type_code = TYPE_CODE_UNDEF;
2761 type = dbx_alloc_type (typenums, objfile);
2762 switch (type_descriptor)
2765 type_code = TYPE_CODE_STRUCT;
2768 type_code = TYPE_CODE_UNION;
2771 type = read_struct_type (pp, type, type_code, objfile);
2775 case 'a': /* Array type */
2777 return error_type (pp, objfile);
2780 type = dbx_alloc_type (typenums, objfile);
2781 type = read_array_type (pp, type, objfile);
2783 TYPE_CODE (type) = TYPE_CODE_STRING;
2785 TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;
2788 case 'S': /* Set or bitstring type */
2789 type1 = read_type (pp, objfile);
2790 type = create_set_type ((struct type *) NULL, type1);
2792 TYPE_CODE (type) = TYPE_CODE_BITSTRING;
2793 if (typenums[0] != -1)
2794 *dbx_lookup_type (typenums) = type;
2798 --*pp; /* Go back to the symbol in error */
2799 /* Particularly important if it was \0! */
2800 return error_type (pp, objfile);
2805 warning ("GDB internal error, type is NULL in stabsread.c\n");
2806 return error_type (pp, objfile);
2809 /* Size specified in a type attribute overrides any other size. */
2810 if (type_size != -1)
2811 TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
2816 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
2817 Return the proper type node for a given builtin type number. */
2819 static struct type *
2820 rs6000_builtin_type (int typenum)
2822 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
2823 #define NUMBER_RECOGNIZED 34
2824 /* This includes an empty slot for type number -0. */
2825 static struct type *negative_types[NUMBER_RECOGNIZED + 1];
2826 struct type *rettype = NULL;
2828 if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED)
2830 complaint (&symfile_complaints, "Unknown builtin type %d", typenum);
2831 return builtin_type_error;
2833 if (negative_types[-typenum] != NULL)
2834 return negative_types[-typenum];
2836 #if TARGET_CHAR_BIT != 8
2837 #error This code wrong for TARGET_CHAR_BIT not 8
2838 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
2839 that if that ever becomes not true, the correct fix will be to
2840 make the size in the struct type to be in bits, not in units of
2847 /* The size of this and all the other types are fixed, defined
2848 by the debugging format. If there is a type called "int" which
2849 is other than 32 bits, then it should use a new negative type
2850 number (or avoid negative type numbers for that case).
2851 See stabs.texinfo. */
2852 rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
2855 rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL);
2858 rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
2861 rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL);
2864 rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED,
2865 "unsigned char", NULL);
2868 rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL);
2871 rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED,
2872 "unsigned short", NULL);
2875 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2876 "unsigned int", NULL);
2879 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2882 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2883 "unsigned long", NULL);
2886 rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
2889 /* IEEE single precision (32 bit). */
2890 rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
2893 /* IEEE double precision (64 bit). */
2894 rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
2897 /* This is an IEEE double on the RS/6000, and different machines with
2898 different sizes for "long double" should use different negative
2899 type numbers. See stabs.texinfo. */
2900 rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL);
2903 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL);
2906 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2910 rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL);
2913 rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL);
2916 rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL);
2919 rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED,
2923 rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED,
2927 rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED,
2931 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2935 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2939 /* Complex type consisting of two IEEE single precision values. */
2940 rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL);
2941 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float",
2945 /* Complex type consisting of two IEEE double precision values. */
2946 rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL);
2947 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double",
2951 rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL);
2954 rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL);
2957 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL);
2960 rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL);
2963 rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL);
2966 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2967 "unsigned long long", NULL);
2970 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2974 rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL);
2977 negative_types[-typenum] = rettype;
2981 /* This page contains subroutines of read_type. */
2983 /* Replace *OLD_NAME with the method name portion of PHYSNAME. */
2986 update_method_name_from_physname (char **old_name, char *physname)
2990 method_name = method_name_from_physname (physname);
2992 if (method_name == NULL)
2994 complaint (&symfile_complaints,
2995 "Method has bad physname %s\n", physname);
2999 if (strcmp (*old_name, method_name) != 0)
3002 *old_name = method_name;
3005 xfree (method_name);
3008 /* Read member function stabs info for C++ classes. The form of each member
3011 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
3013 An example with two member functions is:
3015 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
3017 For the case of overloaded operators, the format is op$::*.funcs, where
3018 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
3019 name (such as `+=') and `.' marks the end of the operator name.
3021 Returns 1 for success, 0 for failure. */
3024 read_member_functions (struct field_info *fip, char **pp, struct type *type,
3025 struct objfile *objfile)
3029 /* Total number of member functions defined in this class. If the class
3030 defines two `f' functions, and one `g' function, then this will have
3032 int total_length = 0;
3036 struct next_fnfield *next;
3037 struct fn_field fn_field;
3040 struct type *look_ahead_type;
3041 struct next_fnfieldlist *new_fnlist;
3042 struct next_fnfield *new_sublist;
3046 /* Process each list until we find something that is not a member function
3047 or find the end of the functions. */
3051 /* We should be positioned at the start of the function name.
3052 Scan forward to find the first ':' and if it is not the
3053 first of a "::" delimiter, then this is not a member function. */
3065 look_ahead_type = NULL;
3068 new_fnlist = (struct next_fnfieldlist *)
3069 xmalloc (sizeof (struct next_fnfieldlist));
3070 make_cleanup (xfree, new_fnlist);
3071 memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
3073 if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2]))
3075 /* This is a completely wierd case. In order to stuff in the
3076 names that might contain colons (the usual name delimiter),
3077 Mike Tiemann defined a different name format which is
3078 signalled if the identifier is "op$". In that case, the
3079 format is "op$::XXXX." where XXXX is the name. This is
3080 used for names like "+" or "=". YUUUUUUUK! FIXME! */
3081 /* This lets the user type "break operator+".
3082 We could just put in "+" as the name, but that wouldn't
3084 static char opname[32] = "op$";
3085 char *o = opname + 3;
3087 /* Skip past '::'. */
3090 STABS_CONTINUE (pp, objfile);
3096 main_fn_name = savestring (opname, o - opname);
3102 main_fn_name = savestring (*pp, p - *pp);
3103 /* Skip past '::'. */
3106 new_fnlist->fn_fieldlist.name = main_fn_name;
3111 (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
3112 make_cleanup (xfree, new_sublist);
3113 memset (new_sublist, 0, sizeof (struct next_fnfield));
3115 /* Check for and handle cretinous dbx symbol name continuation! */
3116 if (look_ahead_type == NULL)
3119 STABS_CONTINUE (pp, objfile);
3121 new_sublist->fn_field.type = read_type (pp, objfile);
3124 /* Invalid symtab info for member function. */
3130 /* g++ version 1 kludge */
3131 new_sublist->fn_field.type = look_ahead_type;
3132 look_ahead_type = NULL;
3142 /* If this is just a stub, then we don't have the real name here. */
3144 if (TYPE_STUB (new_sublist->fn_field.type))
3146 if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
3147 TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
3148 new_sublist->fn_field.is_stub = 1;
3150 new_sublist->fn_field.physname = savestring (*pp, p - *pp);
3153 /* Set this member function's visibility fields. */
3156 case VISIBILITY_PRIVATE:
3157 new_sublist->fn_field.is_private = 1;
3159 case VISIBILITY_PROTECTED:
3160 new_sublist->fn_field.is_protected = 1;
3164 STABS_CONTINUE (pp, objfile);
3167 case 'A': /* Normal functions. */
3168 new_sublist->fn_field.is_const = 0;
3169 new_sublist->fn_field.is_volatile = 0;
3172 case 'B': /* `const' member functions. */
3173 new_sublist->fn_field.is_const = 1;
3174 new_sublist->fn_field.is_volatile = 0;
3177 case 'C': /* `volatile' member function. */
3178 new_sublist->fn_field.is_const = 0;
3179 new_sublist->fn_field.is_volatile = 1;
3182 case 'D': /* `const volatile' member function. */
3183 new_sublist->fn_field.is_const = 1;
3184 new_sublist->fn_field.is_volatile = 1;
3187 case '*': /* File compiled with g++ version 1 -- no info */
3192 complaint (&symfile_complaints,
3193 "const/volatile indicator missing, got '%c'", **pp);
3202 /* virtual member function, followed by index.
3203 The sign bit is set to distinguish pointers-to-methods
3204 from virtual function indicies. Since the array is
3205 in words, the quantity must be shifted left by 1
3206 on 16 bit machine, and by 2 on 32 bit machine, forcing
3207 the sign bit out, and usable as a valid index into
3208 the array. Remove the sign bit here. */
3209 new_sublist->fn_field.voffset =
3210 (0x7fffffff & read_huge_number (pp, ';', &nbits)) + 2;
3214 STABS_CONTINUE (pp, objfile);
3215 if (**pp == ';' || **pp == '\0')
3217 /* Must be g++ version 1. */
3218 new_sublist->fn_field.fcontext = 0;
3222 /* Figure out from whence this virtual function came.
3223 It may belong to virtual function table of
3224 one of its baseclasses. */
3225 look_ahead_type = read_type (pp, objfile);
3228 /* g++ version 1 overloaded methods. */
3232 new_sublist->fn_field.fcontext = look_ahead_type;
3241 look_ahead_type = NULL;
3247 /* static member function. */
3249 int slen = strlen (main_fn_name);
3251 new_sublist->fn_field.voffset = VOFFSET_STATIC;
3253 /* For static member functions, we can't tell if they
3254 are stubbed, as they are put out as functions, and not as
3256 GCC v2 emits the fully mangled name if
3257 dbxout.c:flag_minimal_debug is not set, so we have to
3258 detect a fully mangled physname here and set is_stub
3259 accordingly. Fully mangled physnames in v2 start with
3260 the member function name, followed by two underscores.
3261 GCC v3 currently always emits stubbed member functions,
3262 but with fully mangled physnames, which start with _Z. */
3263 if (!(strncmp (new_sublist->fn_field.physname,
3264 main_fn_name, slen) == 0
3265 && new_sublist->fn_field.physname[slen] == '_'
3266 && new_sublist->fn_field.physname[slen + 1] == '_'))
3268 new_sublist->fn_field.is_stub = 1;
3275 complaint (&symfile_complaints,
3276 "member function type missing, got '%c'", (*pp)[-1]);
3277 /* Fall through into normal member function. */
3280 /* normal member function. */
3281 new_sublist->fn_field.voffset = 0;
3282 new_sublist->fn_field.fcontext = 0;
3286 new_sublist->next = sublist;
3287 sublist = new_sublist;
3289 STABS_CONTINUE (pp, objfile);
3291 while (**pp != ';' && **pp != '\0');
3294 STABS_CONTINUE (pp, objfile);
3296 /* Skip GCC 3.X member functions which are duplicates of the callable
3297 constructor/destructor. */
3298 if (strcmp (main_fn_name, "__base_ctor") == 0
3299 || strcmp (main_fn_name, "__base_dtor") == 0
3300 || strcmp (main_fn_name, "__deleting_dtor") == 0)
3302 xfree (main_fn_name);
3307 int has_destructor = 0, has_other = 0;
3309 struct next_fnfield *tmp_sublist;
3311 /* Various versions of GCC emit various mostly-useless
3312 strings in the name field for special member functions.
3314 For stub methods, we need to defer correcting the name
3315 until we are ready to unstub the method, because the current
3316 name string is used by gdb_mangle_name. The only stub methods
3317 of concern here are GNU v2 operators; other methods have their
3318 names correct (see caveat below).
3320 For non-stub methods, in GNU v3, we have a complete physname.
3321 Therefore we can safely correct the name now. This primarily
3322 affects constructors and destructors, whose name will be
3323 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
3324 operators will also have incorrect names; for instance,
3325 "operator int" will be named "operator i" (i.e. the type is
3328 For non-stub methods in GNU v2, we have no easy way to
3329 know if we have a complete physname or not. For most
3330 methods the result depends on the platform (if CPLUS_MARKER
3331 can be `$' or `.', it will use minimal debug information, or
3332 otherwise the full physname will be included).
3334 Rather than dealing with this, we take a different approach.
3335 For v3 mangled names, we can use the full physname; for v2,
3336 we use cplus_demangle_opname (which is actually v2 specific),
3337 because the only interesting names are all operators - once again
3338 barring the caveat below. Skip this process if any method in the
3339 group is a stub, to prevent our fouling up the workings of
3342 The caveat: GCC 2.95.x (and earlier?) put constructors and
3343 destructors in the same method group. We need to split this
3344 into two groups, because they should have different names.
3345 So for each method group we check whether it contains both
3346 routines whose physname appears to be a destructor (the physnames
3347 for and destructors are always provided, due to quirks in v2
3348 mangling) and routines whose physname does not appear to be a
3349 destructor. If so then we break up the list into two halves.
3350 Even if the constructors and destructors aren't in the same group
3351 the destructor will still lack the leading tilde, so that also
3354 So, to summarize what we expect and handle here:
3356 Given Given Real Real Action
3357 method name physname physname method name
3359 __opi [none] __opi__3Foo operator int opname
3361 Foo _._3Foo _._3Foo ~Foo separate and
3363 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
3364 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
3367 tmp_sublist = sublist;
3368 while (tmp_sublist != NULL)
3370 if (tmp_sublist->fn_field.is_stub)
3372 if (tmp_sublist->fn_field.physname[0] == '_'
3373 && tmp_sublist->fn_field.physname[1] == 'Z')
3376 if (is_destructor_name (tmp_sublist->fn_field.physname))
3381 tmp_sublist = tmp_sublist->next;
3384 if (has_destructor && has_other)
3386 struct next_fnfieldlist *destr_fnlist;
3387 struct next_fnfield *last_sublist;
3389 /* Create a new fn_fieldlist for the destructors. */
3391 destr_fnlist = (struct next_fnfieldlist *)
3392 xmalloc (sizeof (struct next_fnfieldlist));
3393 make_cleanup (xfree, destr_fnlist);
3394 memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist));
3395 destr_fnlist->fn_fieldlist.name
3396 = obconcat (&objfile->type_obstack, "", "~",
3397 new_fnlist->fn_fieldlist.name);
3399 destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
3400 obstack_alloc (&objfile->type_obstack,
3401 sizeof (struct fn_field) * has_destructor);
3402 memset (destr_fnlist->fn_fieldlist.fn_fields, 0,
3403 sizeof (struct fn_field) * has_destructor);
3404 tmp_sublist = sublist;
3405 last_sublist = NULL;
3407 while (tmp_sublist != NULL)
3409 if (!is_destructor_name (tmp_sublist->fn_field.physname))
3411 tmp_sublist = tmp_sublist->next;
3415 destr_fnlist->fn_fieldlist.fn_fields[i++]
3416 = tmp_sublist->fn_field;
3418 last_sublist->next = tmp_sublist->next;
3420 sublist = tmp_sublist->next;
3421 last_sublist = tmp_sublist;
3422 tmp_sublist = tmp_sublist->next;
3425 destr_fnlist->fn_fieldlist.length = has_destructor;
3426 destr_fnlist->next = fip->fnlist;
3427 fip->fnlist = destr_fnlist;
3429 total_length += has_destructor;
3430 length -= has_destructor;
3434 /* v3 mangling prevents the use of abbreviated physnames,
3435 so we can do this here. There are stubbed methods in v3
3437 - in -gstabs instead of -gstabs+
3438 - or for static methods, which are output as a function type
3439 instead of a method type. */
3441 update_method_name_from_physname (&new_fnlist->fn_fieldlist.name,
3442 sublist->fn_field.physname);
3444 else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~')
3446 new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL);
3447 xfree (main_fn_name);
3451 char dem_opname[256];
3453 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
3454 dem_opname, DMGL_ANSI);
3456 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
3459 new_fnlist->fn_fieldlist.name
3460 = obsavestring (dem_opname, strlen (dem_opname),
3461 &objfile->type_obstack);
3464 new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
3465 obstack_alloc (&objfile->type_obstack,
3466 sizeof (struct fn_field) * length);
3467 memset (new_fnlist->fn_fieldlist.fn_fields, 0,
3468 sizeof (struct fn_field) * length);
3469 for (i = length; (i--, sublist); sublist = sublist->next)
3471 new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
3474 new_fnlist->fn_fieldlist.length = length;
3475 new_fnlist->next = fip->fnlist;
3476 fip->fnlist = new_fnlist;
3478 total_length += length;
3484 ALLOCATE_CPLUS_STRUCT_TYPE (type);
3485 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
3486 TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields);
3487 memset (TYPE_FN_FIELDLISTS (type), 0,
3488 sizeof (struct fn_fieldlist) * nfn_fields);
3489 TYPE_NFN_FIELDS (type) = nfn_fields;
3490 TYPE_NFN_FIELDS_TOTAL (type) = total_length;
3496 /* Special GNU C++ name.
3498 Returns 1 for success, 0 for failure. "failure" means that we can't
3499 keep parsing and it's time for error_type(). */
3502 read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type,
3503 struct objfile *objfile)
3508 struct type *context;
3518 /* At this point, *pp points to something like "22:23=*22...",
3519 where the type number before the ':' is the "context" and
3520 everything after is a regular type definition. Lookup the
3521 type, find it's name, and construct the field name. */
3523 context = read_type (pp, objfile);
3527 case 'f': /* $vf -- a virtual function table pointer */
3528 name = type_name_no_tag (context);
3533 fip->list->field.name =
3534 obconcat (&objfile->type_obstack, vptr_name, name, "");
3537 case 'b': /* $vb -- a virtual bsomethingorother */
3538 name = type_name_no_tag (context);
3541 complaint (&symfile_complaints,
3542 "C++ abbreviated type name unknown at symtab pos %d",
3546 fip->list->field.name =
3547 obconcat (&objfile->type_obstack, vb_name, name, "");
3551 invalid_cpp_abbrev_complaint (*pp);
3552 fip->list->field.name =
3553 obconcat (&objfile->type_obstack,
3554 "INVALID_CPLUSPLUS_ABBREV", "", "");
3558 /* At this point, *pp points to the ':'. Skip it and read the
3564 invalid_cpp_abbrev_complaint (*pp);
3567 fip->list->field.type = read_type (pp, objfile);
3569 (*pp)++; /* Skip the comma. */
3575 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits);
3579 /* This field is unpacked. */
3580 FIELD_BITSIZE (fip->list->field) = 0;
3581 fip->list->visibility = VISIBILITY_PRIVATE;
3585 invalid_cpp_abbrev_complaint (*pp);
3586 /* We have no idea what syntax an unrecognized abbrev would have, so
3587 better return 0. If we returned 1, we would need to at least advance
3588 *pp to avoid an infinite loop. */
3595 read_one_struct_field (struct field_info *fip, char **pp, char *p,
3596 struct type *type, struct objfile *objfile)
3598 #if 0 /* OBSOLETE CFront */
3599 // OBSOLETE /* The following is code to work around cfront generated stabs.
3600 // OBSOLETE The stabs contains full mangled name for each field.
3601 // OBSOLETE We try to demangle the name and extract the field name out of it.
3603 // OBSOLETE if (ARM_DEMANGLING && current_subfile->language == language_cplus)
3605 // OBSOLETE char save_p;
3606 // OBSOLETE char *dem, *dem_p;
3607 // OBSOLETE save_p = *p;
3608 // OBSOLETE *p = '\0';
3609 // OBSOLETE dem = cplus_demangle (*pp, DMGL_ANSI | DMGL_PARAMS);
3610 // OBSOLETE if (dem != NULL)
3612 // OBSOLETE dem_p = strrchr (dem, ':');
3613 // OBSOLETE if (dem_p != 0 && *(dem_p - 1) == ':')
3614 // OBSOLETE dem_p++;
3615 // OBSOLETE FIELD_NAME (fip->list->field) =
3616 // OBSOLETE obsavestring (dem_p, strlen (dem_p), &objfile->type_obstack);
3620 // OBSOLETE FIELD_NAME (fip->list->field) =
3621 // OBSOLETE obsavestring (*pp, p - *pp, &objfile->type_obstack);
3623 // OBSOLETE *p = save_p;
3625 // OBSOLETE /* end of code for cfront work around */
3628 #endif /* OBSOLETE CFront */
3629 fip->list->field.name =
3630 obsavestring (*pp, p - *pp, &objfile->type_obstack);
3633 /* This means we have a visibility for a field coming. */
3637 fip->list->visibility = *(*pp)++;
3641 /* normal dbx-style format, no explicit visibility */
3642 fip->list->visibility = VISIBILITY_PUBLIC;
3645 fip->list->field.type = read_type (pp, objfile);
3650 /* Possible future hook for nested types. */
3653 fip->list->field.bitpos = (long) -2; /* nested type */
3663 /* Static class member. */
3664 SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp));
3668 else if (**pp != ',')
3670 /* Bad structure-type format. */
3671 stabs_general_complaint ("bad structure-type format");
3675 (*pp)++; /* Skip the comma. */
3679 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits);
3682 stabs_general_complaint ("bad structure-type format");
3685 FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits);
3688 stabs_general_complaint ("bad structure-type format");
3693 if (FIELD_BITPOS (fip->list->field) == 0
3694 && FIELD_BITSIZE (fip->list->field) == 0)
3696 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
3697 it is a field which has been optimized out. The correct stab for
3698 this case is to use VISIBILITY_IGNORE, but that is a recent
3699 invention. (2) It is a 0-size array. For example
3700 union { int num; char str[0]; } foo. Printing "<no value>" for
3701 str in "p foo" is OK, since foo.str (and thus foo.str[3])
3702 will continue to work, and a 0-size array as a whole doesn't
3703 have any contents to print.
3705 I suspect this probably could also happen with gcc -gstabs (not
3706 -gstabs+) for static fields, and perhaps other C++ extensions.
3707 Hopefully few people use -gstabs with gdb, since it is intended
3708 for dbx compatibility. */
3710 /* Ignore this field. */
3711 fip->list->visibility = VISIBILITY_IGNORE;
3715 /* Detect an unpacked field and mark it as such.
3716 dbx gives a bit size for all fields.
3717 Note that forward refs cannot be packed,
3718 and treat enums as if they had the width of ints. */
3720 struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field));
3722 if (TYPE_CODE (field_type) != TYPE_CODE_INT
3723 && TYPE_CODE (field_type) != TYPE_CODE_RANGE
3724 && TYPE_CODE (field_type) != TYPE_CODE_BOOL
3725 && TYPE_CODE (field_type) != TYPE_CODE_ENUM)
3727 FIELD_BITSIZE (fip->list->field) = 0;
3729 if ((FIELD_BITSIZE (fip->list->field)
3730 == TARGET_CHAR_BIT * TYPE_LENGTH (field_type)
3731 || (TYPE_CODE (field_type) == TYPE_CODE_ENUM
3732 && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT)
3735 FIELD_BITPOS (fip->list->field) % 8 == 0)
3737 FIELD_BITSIZE (fip->list->field) = 0;
3743 /* Read struct or class data fields. They have the form:
3745 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
3747 At the end, we see a semicolon instead of a field.
3749 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
3752 The optional VISIBILITY is one of:
3754 '/0' (VISIBILITY_PRIVATE)
3755 '/1' (VISIBILITY_PROTECTED)
3756 '/2' (VISIBILITY_PUBLIC)
3757 '/9' (VISIBILITY_IGNORE)
3759 or nothing, for C style fields with public visibility.
3761 Returns 1 for success, 0 for failure. */
3764 read_struct_fields (struct field_info *fip, char **pp, struct type *type,
3765 struct objfile *objfile)
3768 struct nextfield *new;
3770 /* We better set p right now, in case there are no fields at all... */
3774 /* Read each data member type until we find the terminating ';' at the end of
3775 the data member list, or break for some other reason such as finding the
3776 start of the member function list. */
3777 /* Stab string for structure/union does not end with two ';' in
3778 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
3780 while (**pp != ';' && **pp != '\0')
3782 STABS_CONTINUE (pp, objfile);
3783 /* Get space to record the next field's data. */
3784 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
3785 make_cleanup (xfree, new);
3786 memset (new, 0, sizeof (struct nextfield));
3787 new->next = fip->list;
3790 /* Get the field name. */
3793 /* If is starts with CPLUS_MARKER it is a special abbreviation,
3794 unless the CPLUS_MARKER is followed by an underscore, in
3795 which case it is just the name of an anonymous type, which we
3796 should handle like any other type name. */
3798 if (is_cplus_marker (p[0]) && p[1] != '_')
3800 if (!read_cpp_abbrev (fip, pp, type, objfile))
3805 /* Look for the ':' that separates the field name from the field
3806 values. Data members are delimited by a single ':', while member
3807 functions are delimited by a pair of ':'s. When we hit the member
3808 functions (if any), terminate scan loop and return. */
3810 while (*p != ':' && *p != '\0')
3817 /* Check to see if we have hit the member functions yet. */
3822 read_one_struct_field (fip, pp, p, type, objfile);
3824 if (p[0] == ':' && p[1] == ':')
3826 /* (the deleted) chill the list of fields: the last entry (at
3827 the head) is a partially constructed entry which we now
3829 fip->list = fip->list->next;
3834 /* The stabs for C++ derived classes contain baseclass information which
3835 is marked by a '!' character after the total size. This function is
3836 called when we encounter the baseclass marker, and slurps up all the
3837 baseclass information.
3839 Immediately following the '!' marker is the number of base classes that
3840 the class is derived from, followed by information for each base class.
3841 For each base class, there are two visibility specifiers, a bit offset
3842 to the base class information within the derived class, a reference to
3843 the type for the base class, and a terminating semicolon.
3845 A typical example, with two base classes, would be "!2,020,19;0264,21;".
3847 Baseclass information marker __________________|| | | | | | |
3848 Number of baseclasses __________________________| | | | | | |
3849 Visibility specifiers (2) ________________________| | | | | |
3850 Offset in bits from start of class _________________| | | | |
3851 Type number for base class ___________________________| | | |
3852 Visibility specifiers (2) _______________________________| | |
3853 Offset in bits from start of class ________________________| |
3854 Type number of base class ____________________________________|
3856 Return 1 for success, 0 for (error-type-inducing) failure. */
3862 read_baseclasses (struct field_info *fip, char **pp, struct type *type,
3863 struct objfile *objfile)
3866 struct nextfield *new;
3874 /* Skip the '!' baseclass information marker. */
3878 ALLOCATE_CPLUS_STRUCT_TYPE (type);
3881 TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits);
3887 /* Some stupid compilers have trouble with the following, so break
3888 it up into simpler expressions. */
3889 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
3890 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
3893 int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
3896 pointer = (char *) TYPE_ALLOC (type, num_bytes);
3897 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
3901 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
3903 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
3905 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
3906 make_cleanup (xfree, new);
3907 memset (new, 0, sizeof (struct nextfield));
3908 new->next = fip->list;
3910 FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */
3912 STABS_CONTINUE (pp, objfile);
3916 /* Nothing to do. */
3919 SET_TYPE_FIELD_VIRTUAL (type, i);
3922 /* Unknown character. Complain and treat it as non-virtual. */
3924 complaint (&symfile_complaints,
3925 "Unknown virtual character `%c' for baseclass", **pp);
3930 new->visibility = *(*pp)++;
3931 switch (new->visibility)
3933 case VISIBILITY_PRIVATE:
3934 case VISIBILITY_PROTECTED:
3935 case VISIBILITY_PUBLIC:
3938 /* Bad visibility format. Complain and treat it as
3941 complaint (&symfile_complaints,
3942 "Unknown visibility `%c' for baseclass",
3944 new->visibility = VISIBILITY_PUBLIC;
3951 /* The remaining value is the bit offset of the portion of the object
3952 corresponding to this baseclass. Always zero in the absence of
3953 multiple inheritance. */
3955 FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits);
3960 /* The last piece of baseclass information is the type of the
3961 base class. Read it, and remember it's type name as this
3964 new->field.type = read_type (pp, objfile);
3965 new->field.name = type_name_no_tag (new->field.type);
3967 /* skip trailing ';' and bump count of number of fields seen */
3976 /* The tail end of stabs for C++ classes that contain a virtual function
3977 pointer contains a tilde, a %, and a type number.
3978 The type number refers to the base class (possibly this class itself) which
3979 contains the vtable pointer for the current class.
3981 This function is called when we have parsed all the method declarations,
3982 so we can look for the vptr base class info. */
3985 read_tilde_fields (struct field_info *fip, char **pp, struct type *type,
3986 struct objfile *objfile)
3990 STABS_CONTINUE (pp, objfile);
3992 /* If we are positioned at a ';', then skip it. */
4002 if (**pp == '=' || **pp == '+' || **pp == '-')
4004 /* Obsolete flags that used to indicate the presence
4005 of constructors and/or destructors. */
4009 /* Read either a '%' or the final ';'. */
4010 if (*(*pp)++ == '%')
4012 /* The next number is the type number of the base class
4013 (possibly our own class) which supplies the vtable for
4014 this class. Parse it out, and search that class to find
4015 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
4016 and TYPE_VPTR_FIELDNO. */
4021 t = read_type (pp, objfile);
4023 while (*p != '\0' && *p != ';')
4029 /* Premature end of symbol. */
4033 TYPE_VPTR_BASETYPE (type) = t;
4034 if (type == t) /* Our own class provides vtbl ptr */
4036 for (i = TYPE_NFIELDS (t) - 1;
4037 i >= TYPE_N_BASECLASSES (t);
4040 char *name = TYPE_FIELD_NAME (t, i);
4041 if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2)
4042 && is_cplus_marker (name[sizeof (vptr_name) - 2]))
4044 TYPE_VPTR_FIELDNO (type) = i;
4048 /* Virtual function table field not found. */
4049 complaint (&symfile_complaints,
4050 "virtual function table pointer not found when defining class `%s'",
4056 TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
4067 attach_fn_fields_to_type (struct field_info *fip, register struct type *type)
4071 for (n = TYPE_NFN_FIELDS (type);
4072 fip->fnlist != NULL;
4073 fip->fnlist = fip->fnlist->next)
4075 --n; /* Circumvent Sun3 compiler bug */
4076 TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist;
4081 #if 0 /* OBSOLETE CFront */
4082 // OBSOLETE /* read cfront class static data.
4083 // OBSOLETE pp points to string starting with the list of static data
4084 // OBSOLETE eg: A:ZcA;1@Bpub v2@Bvirpri;__ct__1AFv func__1AFv *sfunc__1AFv ;as__1A ;;
4085 // OBSOLETE ^^^^^^^^
4087 // OBSOLETE A:ZcA;;foopri__1AFv foopro__1AFv __ct__1AFv __ct__1AFRC1A foopub__1AFv ;;;
4091 // OBSOLETE static int
4092 // OBSOLETE read_cfront_static_fields (struct field_info *fip, char **pp, struct type *type,
4093 // OBSOLETE struct objfile *objfile)
4095 // OBSOLETE struct nextfield *new;
4096 // OBSOLETE struct type *stype;
4097 // OBSOLETE char *sname;
4098 // OBSOLETE struct symbol *ref_static = 0;
4100 // OBSOLETE if (**pp == ';') /* no static data; return */
4102 // OBSOLETE ++(*pp);
4103 // OBSOLETE return 1;
4106 // OBSOLETE /* Process each field in the list until we find the terminating ";" */
4108 // OBSOLETE /* eg: p = "as__1A ;;;" */
4109 // OBSOLETE STABS_CONTINUE (pp, objfile); /* handle \\ */
4110 // OBSOLETE while (**pp != ';' && (sname = get_substring (pp, ' '), sname))
4112 // OBSOLETE ref_static = lookup_symbol (sname, 0, VAR_NAMESPACE, 0, 0); /*demangled_name */
4113 // OBSOLETE if (!ref_static)
4115 // OBSOLETE complaint (&symfile_complaints,
4116 // OBSOLETE "Unable to find symbol for static data field %s", sname);
4117 // OBSOLETE continue;
4119 // OBSOLETE stype = SYMBOL_TYPE (ref_static);
4121 // OBSOLETE /* allocate a new fip */
4122 // OBSOLETE new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
4123 // OBSOLETE make_cleanup (xfree, new);
4124 // OBSOLETE memset (new, 0, sizeof (struct nextfield));
4125 // OBSOLETE new->next = fip->list;
4126 // OBSOLETE fip->list = new;
4128 // OBSOLETE /* set visibility */
4129 // OBSOLETE /* FIXME! no way to tell visibility from stabs??? */
4130 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
4132 // OBSOLETE /* set field info into fip */
4133 // OBSOLETE fip->list->field.type = stype;
4135 // OBSOLETE /* set bitpos & bitsize */
4136 // OBSOLETE SET_FIELD_PHYSNAME (fip->list->field, savestring (sname, strlen (sname)));
4138 // OBSOLETE /* set name field */
4139 // OBSOLETE /* The following is code to work around cfront generated stabs.
4140 // OBSOLETE The stabs contains full mangled name for each field.
4141 // OBSOLETE We try to demangle the name and extract the field name out of it.
4143 // OBSOLETE if (ARM_DEMANGLING)
4145 // OBSOLETE char *dem, *dem_p;
4146 // OBSOLETE dem = cplus_demangle (sname, DMGL_ANSI | DMGL_PARAMS);
4147 // OBSOLETE if (dem != NULL)
4149 // OBSOLETE dem_p = strrchr (dem, ':');
4150 // OBSOLETE if (dem_p != 0 && *(dem_p - 1) == ':')
4151 // OBSOLETE dem_p++;
4152 // OBSOLETE fip->list->field.name =
4153 // OBSOLETE obsavestring (dem_p, strlen (dem_p), &objfile->type_obstack);
4157 // OBSOLETE fip->list->field.name =
4158 // OBSOLETE obsavestring (sname, strlen (sname), &objfile->type_obstack);
4160 // OBSOLETE } /* end of code for cfront work around */
4161 // OBSOLETE } /* loop again for next static field */
4162 // OBSOLETE return 1;
4165 // OBSOLETE /* Copy structure fields to fip so attach_fields_to_type will work.
4166 // OBSOLETE type has already been created with the initial instance data fields.
4167 // OBSOLETE Now we want to be able to add the other members to the class,
4168 // OBSOLETE so we want to add them back to the fip and reattach them again
4169 // OBSOLETE once we have collected all the class members. */
4171 // OBSOLETE static int
4172 // OBSOLETE copy_cfront_struct_fields (struct field_info *fip, struct type *type,
4173 // OBSOLETE struct objfile *objfile)
4175 // OBSOLETE int nfields = TYPE_NFIELDS (type);
4177 // OBSOLETE struct nextfield *new;
4179 // OBSOLETE /* Copy the fields into the list of fips and reset the types
4180 // OBSOLETE to remove the old fields */
4182 // OBSOLETE for (i = 0; i < nfields; i++)
4184 // OBSOLETE /* allocate a new fip */
4185 // OBSOLETE new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
4186 // OBSOLETE make_cleanup (xfree, new);
4187 // OBSOLETE memset (new, 0, sizeof (struct nextfield));
4188 // OBSOLETE new->next = fip->list;
4189 // OBSOLETE fip->list = new;
4191 // OBSOLETE /* copy field info into fip */
4192 // OBSOLETE new->field = TYPE_FIELD (type, i);
4193 // OBSOLETE /* set visibility */
4194 // OBSOLETE if (TYPE_FIELD_PROTECTED (type, i))
4195 // OBSOLETE new->visibility = VISIBILITY_PROTECTED;
4196 // OBSOLETE else if (TYPE_FIELD_PRIVATE (type, i))
4197 // OBSOLETE new->visibility = VISIBILITY_PRIVATE;
4199 // OBSOLETE new->visibility = VISIBILITY_PUBLIC;
4201 // OBSOLETE /* Now delete the fields from the type since we will be
4202 // OBSOLETE allocing new space once we get the rest of the fields
4203 // OBSOLETE in attach_fields_to_type.
4204 // OBSOLETE The pointer TYPE_FIELDS(type) is left dangling but should
4205 // OBSOLETE be freed later by objstack_free */
4206 // OBSOLETE TYPE_FIELDS (type) = 0;
4207 // OBSOLETE TYPE_NFIELDS (type) = 0;
4209 // OBSOLETE return 1;
4211 #endif /* OBSOLETE CFront */
4213 /* Create the vector of fields, and record how big it is.
4214 We need this info to record proper virtual function table information
4215 for this class's virtual functions. */
4218 attach_fields_to_type (struct field_info *fip, register struct type *type,
4219 struct objfile *objfile)
4221 register int nfields = 0;
4222 register int non_public_fields = 0;
4223 register struct nextfield *scan;
4225 /* Count up the number of fields that we have, as well as taking note of
4226 whether or not there are any non-public fields, which requires us to
4227 allocate and build the private_field_bits and protected_field_bits
4230 for (scan = fip->list; scan != NULL; scan = scan->next)
4233 if (scan->visibility != VISIBILITY_PUBLIC)
4235 non_public_fields++;
4239 /* Now we know how many fields there are, and whether or not there are any
4240 non-public fields. Record the field count, allocate space for the
4241 array of fields, and create blank visibility bitfields if necessary. */
4243 TYPE_NFIELDS (type) = nfields;
4244 TYPE_FIELDS (type) = (struct field *)
4245 TYPE_ALLOC (type, sizeof (struct field) * nfields);
4246 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
4248 if (non_public_fields)
4250 ALLOCATE_CPLUS_STRUCT_TYPE (type);
4252 TYPE_FIELD_PRIVATE_BITS (type) =
4253 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4254 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
4256 TYPE_FIELD_PROTECTED_BITS (type) =
4257 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4258 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
4260 TYPE_FIELD_IGNORE_BITS (type) =
4261 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
4262 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
4265 /* Copy the saved-up fields into the field vector. Start from the head
4266 of the list, adding to the tail of the field array, so that they end
4267 up in the same order in the array in which they were added to the list. */
4269 while (nfields-- > 0)
4271 TYPE_FIELD (type, nfields) = fip->list->field;
4272 switch (fip->list->visibility)
4274 case VISIBILITY_PRIVATE:
4275 SET_TYPE_FIELD_PRIVATE (type, nfields);
4278 case VISIBILITY_PROTECTED:
4279 SET_TYPE_FIELD_PROTECTED (type, nfields);
4282 case VISIBILITY_IGNORE:
4283 SET_TYPE_FIELD_IGNORE (type, nfields);
4286 case VISIBILITY_PUBLIC:
4290 /* Unknown visibility. Complain and treat it as public. */
4292 complaint (&symfile_complaints, "Unknown visibility `%c' for field",
4293 fip->list->visibility);
4297 fip->list = fip->list->next;
4303 /* Complain that the compiler has emitted more than one definition for the
4304 structure type TYPE. */
4306 complain_about_struct_wipeout (struct type *type)
4311 if (TYPE_TAG_NAME (type))
4313 name = TYPE_TAG_NAME (type);
4314 switch (TYPE_CODE (type))
4316 case TYPE_CODE_STRUCT: kind = "struct "; break;
4317 case TYPE_CODE_UNION: kind = "union "; break;
4318 case TYPE_CODE_ENUM: kind = "enum "; break;
4322 else if (TYPE_NAME (type))
4324 name = TYPE_NAME (type);
4333 complaint (&symfile_complaints,
4334 "struct/union type gets multiply defined: %s%s", kind, name);
4338 /* Read the description of a structure (or union type) and return an object
4339 describing the type.
4341 PP points to a character pointer that points to the next unconsumed token
4342 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
4343 *PP will point to "4a:1,0,32;;".
4345 TYPE points to an incomplete type that needs to be filled in.
4347 OBJFILE points to the current objfile from which the stabs information is
4348 being read. (Note that it is redundant in that TYPE also contains a pointer
4349 to this same objfile, so it might be a good idea to eliminate it. FIXME).
4352 static struct type *
4353 read_struct_type (char **pp, struct type *type, enum type_code type_code,
4354 struct objfile *objfile)
4356 struct cleanup *back_to;
4357 struct field_info fi;
4362 /* When describing struct/union/class types in stabs, G++ always drops
4363 all qualifications from the name. So if you've got:
4364 struct A { ... struct B { ... }; ... };
4365 then G++ will emit stabs for `struct A::B' that call it simply
4366 `struct B'. Obviously, if you've got a real top-level definition for
4367 `struct B', or other nested definitions, this is going to cause
4370 Obviously, GDB can't fix this by itself, but it can at least avoid
4371 scribbling on existing structure type objects when new definitions
4373 if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF
4374 || TYPE_STUB (type)))
4376 complain_about_struct_wipeout (type);
4378 /* It's probably best to return the type unchanged. */
4382 back_to = make_cleanup (null_cleanup, 0);
4384 INIT_CPLUS_SPECIFIC (type);
4385 TYPE_CODE (type) = type_code;
4386 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
4388 /* First comes the total size in bytes. */
4392 TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits);
4394 return error_type (pp, objfile);
4397 /* Now read the baseclasses, if any, read the regular C struct or C++
4398 class member fields, attach the fields to the type, read the C++
4399 member functions, attach them to the type, and then read any tilde
4400 field (baseclass specifier for the class holding the main vtable). */
4402 if (!read_baseclasses (&fi, pp, type, objfile)
4403 || !read_struct_fields (&fi, pp, type, objfile)
4404 || !attach_fields_to_type (&fi, type, objfile)
4405 || !read_member_functions (&fi, pp, type, objfile)
4406 || !attach_fn_fields_to_type (&fi, type)
4407 || !read_tilde_fields (&fi, pp, type, objfile))
4409 type = error_type (pp, objfile);
4412 do_cleanups (back_to);
4416 /* Read a definition of an array type,
4417 and create and return a suitable type object.
4418 Also creates a range type which represents the bounds of that
4421 static struct type *
4422 read_array_type (register char **pp, register struct type *type,
4423 struct objfile *objfile)
4425 struct type *index_type, *element_type, *range_type;
4430 /* Format of an array type:
4431 "ar<index type>;lower;upper;<array_contents_type>".
4432 OS9000: "arlower,upper;<array_contents_type>".
4434 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
4435 for these, produce a type like float[][]. */
4438 index_type = read_type (pp, objfile);
4440 /* Improper format of array type decl. */
4441 return error_type (pp, objfile);
4445 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
4450 lower = read_huge_number (pp, ';', &nbits);
4453 return error_type (pp, objfile);
4455 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
4460 upper = read_huge_number (pp, ';', &nbits);
4462 return error_type (pp, objfile);
4464 element_type = read_type (pp, objfile);
4473 create_range_type ((struct type *) NULL, index_type, lower, upper);
4474 type = create_array_type (type, element_type, range_type);
4480 /* Read a definition of an enumeration type,
4481 and create and return a suitable type object.
4482 Also defines the symbols that represent the values of the type. */
4484 static struct type *
4485 read_enum_type (register char **pp, register struct type *type,
4486 struct objfile *objfile)
4491 register struct symbol *sym;
4493 struct pending **symlist;
4494 struct pending *osyms, *syms;
4497 int unsigned_enum = 1;
4500 /* FIXME! The stabs produced by Sun CC merrily define things that ought
4501 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
4502 to do? For now, force all enum values to file scope. */
4503 if (within_function)
4504 symlist = &local_symbols;
4507 symlist = &file_symbols;
4509 o_nsyms = osyms ? osyms->nsyms : 0;
4511 /* The aix4 compiler emits an extra field before the enum members;
4512 my guess is it's a type of some sort. Just ignore it. */
4515 /* Skip over the type. */
4519 /* Skip over the colon. */
4523 /* Read the value-names and their values.
4524 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
4525 A semicolon or comma instead of a NAME means the end. */
4526 while (**pp && **pp != ';' && **pp != ',')
4528 STABS_CONTINUE (pp, objfile);
4532 name = obsavestring (*pp, p - *pp, &objfile->symbol_obstack);
4534 n = read_huge_number (pp, ',', &nbits);
4536 return error_type (pp, objfile);
4538 sym = (struct symbol *)
4539 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
4540 memset (sym, 0, sizeof (struct symbol));
4541 SYMBOL_NAME (sym) = name;
4542 SYMBOL_LANGUAGE (sym) = current_subfile->language;
4543 SYMBOL_CLASS (sym) = LOC_CONST;
4544 SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
4545 SYMBOL_VALUE (sym) = n;
4548 add_symbol_to_list (sym, symlist);
4553 (*pp)++; /* Skip the semicolon. */
4555 /* Now fill in the fields of the type-structure. */
4557 TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT;
4558 TYPE_CODE (type) = TYPE_CODE_ENUM;
4559 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
4561 TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
4562 TYPE_NFIELDS (type) = nsyms;
4563 TYPE_FIELDS (type) = (struct field *)
4564 TYPE_ALLOC (type, sizeof (struct field) * nsyms);
4565 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms);
4567 /* Find the symbols for the values and put them into the type.
4568 The symbols can be found in the symlist that we put them on
4569 to cause them to be defined. osyms contains the old value
4570 of that symlist; everything up to there was defined by us. */
4571 /* Note that we preserve the order of the enum constants, so
4572 that in something like "enum {FOO, LAST_THING=FOO}" we print
4573 FOO, not LAST_THING. */
4575 for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next)
4577 int last = syms == osyms ? o_nsyms : 0;
4578 int j = syms->nsyms;
4579 for (; --j >= last; --n)
4581 struct symbol *xsym = syms->symbol[j];
4582 SYMBOL_TYPE (xsym) = type;
4583 TYPE_FIELD_NAME (type, n) = SYMBOL_NAME (xsym);
4584 TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
4585 TYPE_FIELD_BITSIZE (type, n) = 0;
4594 /* Sun's ACC uses a somewhat saner method for specifying the builtin
4595 typedefs in every file (for int, long, etc):
4597 type = b <signed> <width> <format type>; <offset>; <nbits>
4599 optional format type = c or b for char or boolean.
4600 offset = offset from high order bit to start bit of type.
4601 width is # bytes in object of this type, nbits is # bits in type.
4603 The width/offset stuff appears to be for small objects stored in
4604 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
4607 static struct type *
4608 read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile)
4613 enum type_code code = TYPE_CODE_INT;
4624 return error_type (pp, objfile);
4628 /* For some odd reason, all forms of char put a c here. This is strange
4629 because no other type has this honor. We can safely ignore this because
4630 we actually determine 'char'acterness by the number of bits specified in
4632 Boolean forms, e.g Fortran logical*X, put a b here. */
4636 else if (**pp == 'b')
4638 code = TYPE_CODE_BOOL;
4642 /* The first number appears to be the number of bytes occupied
4643 by this type, except that unsigned short is 4 instead of 2.
4644 Since this information is redundant with the third number,
4645 we will ignore it. */
4646 read_huge_number (pp, ';', &nbits);
4648 return error_type (pp, objfile);
4650 /* The second number is always 0, so ignore it too. */
4651 read_huge_number (pp, ';', &nbits);
4653 return error_type (pp, objfile);
4655 /* The third number is the number of bits for this type. */
4656 type_bits = read_huge_number (pp, 0, &nbits);
4658 return error_type (pp, objfile);
4659 /* The type *should* end with a semicolon. If it are embedded
4660 in a larger type the semicolon may be the only way to know where
4661 the type ends. If this type is at the end of the stabstring we
4662 can deal with the omitted semicolon (but we don't have to like
4663 it). Don't bother to complain(), Sun's compiler omits the semicolon
4669 return init_type (TYPE_CODE_VOID, 1,
4670 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
4673 return init_type (code,
4674 type_bits / TARGET_CHAR_BIT,
4675 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
4679 static struct type *
4680 read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile)
4685 struct type *rettype;
4687 /* The first number has more details about the type, for example
4689 details = read_huge_number (pp, ';', &nbits);
4691 return error_type (pp, objfile);
4693 /* The second number is the number of bytes occupied by this type */
4694 nbytes = read_huge_number (pp, ';', &nbits);
4696 return error_type (pp, objfile);
4698 if (details == NF_COMPLEX || details == NF_COMPLEX16
4699 || details == NF_COMPLEX32)
4701 rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile);
4702 TYPE_TARGET_TYPE (rettype)
4703 = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile);
4707 return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile);
4710 /* Read a number from the string pointed to by *PP.
4711 The value of *PP is advanced over the number.
4712 If END is nonzero, the character that ends the
4713 number must match END, or an error happens;
4714 and that character is skipped if it does match.
4715 If END is zero, *PP is left pointing to that character.
4717 If the number fits in a long, set *BITS to 0 and return the value.
4718 If not, set *BITS to be the number of bits in the number and return 0.
4720 If encounter garbage, set *BITS to -1 and return 0. */
4723 read_huge_number (char **pp, int end, int *bits)
4740 /* Leading zero means octal. GCC uses this to output values larger
4741 than an int (because that would be hard in decimal). */
4748 upper_limit = LONG_MAX / radix;
4750 while ((c = *p++) >= '0' && c < ('0' + radix))
4752 if (n <= upper_limit)
4755 n += c - '0'; /* FIXME this overflows anyway */
4760 /* This depends on large values being output in octal, which is
4767 /* Ignore leading zeroes. */
4771 else if (c == '2' || c == '3')
4797 /* Large decimal constants are an error (because it is hard to
4798 count how many bits are in them). */
4804 /* -0x7f is the same as 0x80. So deal with it by adding one to
4805 the number of bits. */
4817 /* It's *BITS which has the interesting information. */
4821 static struct type *
4822 read_range_type (char **pp, int typenums[2], struct objfile *objfile)
4824 char *orig_pp = *pp;
4829 struct type *result_type;
4830 struct type *index_type = NULL;
4832 /* First comes a type we are a subrange of.
4833 In C it is usually 0, 1 or the type being defined. */
4834 if (read_type_number (pp, rangenums) != 0)
4835 return error_type (pp, objfile);
4836 self_subrange = (rangenums[0] == typenums[0] &&
4837 rangenums[1] == typenums[1]);
4842 index_type = read_type (pp, objfile);
4845 /* A semicolon should now follow; skip it. */
4849 /* The remaining two operands are usually lower and upper bounds
4850 of the range. But in some special cases they mean something else. */
4851 n2 = read_huge_number (pp, ';', &n2bits);
4852 n3 = read_huge_number (pp, ';', &n3bits);
4854 if (n2bits == -1 || n3bits == -1)
4855 return error_type (pp, objfile);
4858 goto handle_true_range;
4860 /* If limits are huge, must be large integral type. */
4861 if (n2bits != 0 || n3bits != 0)
4863 char got_signed = 0;
4864 char got_unsigned = 0;
4865 /* Number of bits in the type. */
4868 /* Range from 0 to <large number> is an unsigned large integral type. */
4869 if ((n2bits == 0 && n2 == 0) && n3bits != 0)
4874 /* Range from <large number> to <large number>-1 is a large signed
4875 integral type. Take care of the case where <large number> doesn't
4876 fit in a long but <large number>-1 does. */
4877 else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1)
4878 || (n2bits != 0 && n3bits == 0
4879 && (n2bits == sizeof (long) * HOST_CHAR_BIT)
4886 if (got_signed || got_unsigned)
4888 return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT,
4889 got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL,
4893 return error_type (pp, objfile);
4896 /* A type defined as a subrange of itself, with bounds both 0, is void. */
4897 if (self_subrange && n2 == 0 && n3 == 0)
4898 return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile);
4900 /* If n3 is zero and n2 is positive, we want a floating type, and n2
4901 is the width in bytes.
4903 Fortran programs appear to use this for complex types also. To
4904 distinguish between floats and complex, g77 (and others?) seem
4905 to use self-subranges for the complexes, and subranges of int for
4908 Also note that for complexes, g77 sets n2 to the size of one of
4909 the member floats, not the whole complex beast. My guess is that
4910 this was to work well with pre-COMPLEX versions of gdb. */
4912 if (n3 == 0 && n2 > 0)
4914 struct type *float_type
4915 = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile);
4919 struct type *complex_type =
4920 init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile);
4921 TYPE_TARGET_TYPE (complex_type) = float_type;
4922 return complex_type;
4928 /* If the upper bound is -1, it must really be an unsigned int. */
4930 else if (n2 == 0 && n3 == -1)
4932 /* It is unsigned int or unsigned long. */
4933 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
4934 compatibility hack. */
4935 return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
4936 TYPE_FLAG_UNSIGNED, NULL, objfile);
4939 /* Special case: char is defined (Who knows why) as a subrange of
4940 itself with range 0-127. */
4941 else if (self_subrange && n2 == 0 && n3 == 127)
4942 return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile);
4944 /* We used to do this only for subrange of self or subrange of int. */
4947 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
4948 "unsigned long", and we already checked for that,
4949 so don't need to test for it here. */
4952 /* n3 actually gives the size. */
4953 return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED,
4956 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
4957 unsigned n-byte integer. But do require n to be a power of
4958 two; we don't want 3- and 5-byte integers flying around. */
4964 for (bytes = 0; (bits & 0xff) == 0xff; bytes++)
4967 && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */
4968 return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL,
4972 /* I think this is for Convex "long long". Since I don't know whether
4973 Convex sets self_subrange, I also accept that particular size regardless
4974 of self_subrange. */
4975 else if (n3 == 0 && n2 < 0
4977 || n2 == -TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT))
4978 return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile);
4979 else if (n2 == -n3 - 1)
4982 return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile);
4984 return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile);
4985 if (n3 == 0x7fffffff)
4986 return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile);
4989 /* We have a real range type on our hands. Allocate space and
4990 return a real pointer. */
4994 index_type = builtin_type_int;
4996 index_type = *dbx_lookup_type (rangenums);
4997 if (index_type == NULL)
4999 /* Does this actually ever happen? Is that why we are worrying
5000 about dealing with it rather than just calling error_type? */
5002 static struct type *range_type_index;
5004 complaint (&symfile_complaints,
5005 "base type %d of range type is not defined", rangenums[1]);
5006 if (range_type_index == NULL)
5008 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
5009 0, "range type index type", NULL);
5010 index_type = range_type_index;
5013 result_type = create_range_type ((struct type *) NULL, index_type, n2, n3);
5014 return (result_type);
5017 /* Read in an argument list. This is a list of types, separated by commas
5018 and terminated with END. Return the list of types read in, or (struct type
5019 **)-1 if there is an error. */
5021 static struct field *
5022 read_args (char **pp, int end, struct objfile *objfile, int *nargsp,
5025 /* FIXME! Remove this arbitrary limit! */
5026 struct type *types[1024]; /* allow for fns of 1023 parameters */
5033 /* Invalid argument list: no ','. */
5034 return (struct field *) -1;
5036 STABS_CONTINUE (pp, objfile);
5037 types[n++] = read_type (pp, objfile);
5039 (*pp)++; /* get past `end' (the ':' character) */
5041 if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID)
5049 rval = (struct field *) xmalloc (n * sizeof (struct field));
5050 memset (rval, 0, n * sizeof (struct field));
5051 for (i = 0; i < n; i++)
5052 rval[i].type = types[i];
5057 /* Common block handling. */
5059 /* List of symbols declared since the last BCOMM. This list is a tail
5060 of local_symbols. When ECOMM is seen, the symbols on the list
5061 are noted so their proper addresses can be filled in later,
5062 using the common block base address gotten from the assembler
5065 static struct pending *common_block;
5066 static int common_block_i;
5068 /* Name of the current common block. We get it from the BCOMM instead of the
5069 ECOMM to match IBM documentation (even though IBM puts the name both places
5070 like everyone else). */
5071 static char *common_block_name;
5073 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
5074 to remain after this function returns. */
5077 common_block_start (char *name, struct objfile *objfile)
5079 if (common_block_name != NULL)
5081 complaint (&symfile_complaints,
5082 "Invalid symbol data: common block within common block");
5084 common_block = local_symbols;
5085 common_block_i = local_symbols ? local_symbols->nsyms : 0;
5086 common_block_name = obsavestring (name, strlen (name),
5087 &objfile->symbol_obstack);
5090 /* Process a N_ECOMM symbol. */
5093 common_block_end (struct objfile *objfile)
5095 /* Symbols declared since the BCOMM are to have the common block
5096 start address added in when we know it. common_block and
5097 common_block_i point to the first symbol after the BCOMM in
5098 the local_symbols list; copy the list and hang it off the
5099 symbol for the common block name for later fixup. */
5102 struct pending *new = 0;
5103 struct pending *next;
5106 if (common_block_name == NULL)
5108 complaint (&symfile_complaints, "ECOMM symbol unmatched by BCOMM");
5112 sym = (struct symbol *)
5113 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
5114 memset (sym, 0, sizeof (struct symbol));
5115 /* Note: common_block_name already saved on symbol_obstack */
5116 SYMBOL_NAME (sym) = common_block_name;
5117 SYMBOL_CLASS (sym) = LOC_BLOCK;
5119 /* Now we copy all the symbols which have been defined since the BCOMM. */
5121 /* Copy all the struct pendings before common_block. */
5122 for (next = local_symbols;
5123 next != NULL && next != common_block;
5126 for (j = 0; j < next->nsyms; j++)
5127 add_symbol_to_list (next->symbol[j], &new);
5130 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
5131 NULL, it means copy all the local symbols (which we already did
5134 if (common_block != NULL)
5135 for (j = common_block_i; j < common_block->nsyms; j++)
5136 add_symbol_to_list (common_block->symbol[j], &new);
5138 SYMBOL_TYPE (sym) = (struct type *) new;
5140 /* Should we be putting local_symbols back to what it was?
5143 i = hashname (SYMBOL_NAME (sym));
5144 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
5145 global_sym_chain[i] = sym;
5146 common_block_name = NULL;
5149 /* Add a common block's start address to the offset of each symbol
5150 declared to be in it (by being between a BCOMM/ECOMM pair that uses
5151 the common block name). */
5154 fix_common_block (struct symbol *sym, int valu)
5156 struct pending *next = (struct pending *) SYMBOL_TYPE (sym);
5157 for (; next; next = next->next)
5160 for (j = next->nsyms - 1; j >= 0; j--)
5161 SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu;
5167 /* What about types defined as forward references inside of a small lexical
5169 /* Add a type to the list of undefined types to be checked through
5170 once this file has been read in. */
5173 add_undefined_type (struct type *type)
5175 if (undef_types_length == undef_types_allocated)
5177 undef_types_allocated *= 2;
5178 undef_types = (struct type **)
5179 xrealloc ((char *) undef_types,
5180 undef_types_allocated * sizeof (struct type *));
5182 undef_types[undef_types_length++] = type;
5185 /* Go through each undefined type, see if it's still undefined, and fix it
5186 up if possible. We have two kinds of undefined types:
5188 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
5189 Fix: update array length using the element bounds
5190 and the target type's length.
5191 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
5192 yet defined at the time a pointer to it was made.
5193 Fix: Do a full lookup on the struct/union tag. */
5195 cleanup_undefined_types (void)
5199 for (type = undef_types; type < undef_types + undef_types_length; type++)
5201 switch (TYPE_CODE (*type))
5204 case TYPE_CODE_STRUCT:
5205 case TYPE_CODE_UNION:
5206 case TYPE_CODE_ENUM:
5208 /* Check if it has been defined since. Need to do this here
5209 as well as in check_typedef to deal with the (legitimate in
5210 C though not C++) case of several types with the same name
5211 in different source files. */
5212 if (TYPE_STUB (*type))
5214 struct pending *ppt;
5216 /* Name of the type, without "struct" or "union" */
5217 char *typename = TYPE_TAG_NAME (*type);
5219 if (typename == NULL)
5221 complaint (&symfile_complaints, "need a type name");
5224 for (ppt = file_symbols; ppt; ppt = ppt->next)
5226 for (i = 0; i < ppt->nsyms; i++)
5228 struct symbol *sym = ppt->symbol[i];
5230 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
5231 && SYMBOL_NAMESPACE (sym) == STRUCT_NAMESPACE
5232 && (TYPE_CODE (SYMBOL_TYPE (sym)) ==
5234 && STREQ (SYMBOL_NAME (sym), typename))
5235 replace_type (*type, SYMBOL_TYPE (sym));
5244 complaint (&symfile_complaints,
5245 "GDB internal error. cleanup_undefined_types with bad type %d.",
5252 undef_types_length = 0;
5255 /* Scan through all of the global symbols defined in the object file,
5256 assigning values to the debugging symbols that need to be assigned
5257 to. Get these symbols from the minimal symbol table. */
5260 scan_file_globals (struct objfile *objfile)
5263 struct minimal_symbol *msymbol;
5264 struct symbol *sym, *prev, *rsym;
5265 struct objfile *resolve_objfile;
5267 /* SVR4 based linkers copy referenced global symbols from shared
5268 libraries to the main executable.
5269 If we are scanning the symbols for a shared library, try to resolve
5270 them from the minimal symbols of the main executable first. */
5272 if (symfile_objfile && objfile != symfile_objfile)
5273 resolve_objfile = symfile_objfile;
5275 resolve_objfile = objfile;
5279 /* Avoid expensive loop through all minimal symbols if there are
5280 no unresolved symbols. */
5281 for (hash = 0; hash < HASHSIZE; hash++)
5283 if (global_sym_chain[hash])
5286 if (hash >= HASHSIZE)
5289 for (msymbol = resolve_objfile->msymbols;
5290 msymbol && SYMBOL_NAME (msymbol) != NULL;
5295 /* Skip static symbols. */
5296 switch (MSYMBOL_TYPE (msymbol))
5308 /* Get the hash index and check all the symbols
5309 under that hash index. */
5311 hash = hashname (SYMBOL_NAME (msymbol));
5313 for (sym = global_sym_chain[hash]; sym;)
5315 if (SYMBOL_NAME (msymbol)[0] == SYMBOL_NAME (sym)[0] &&
5316 STREQ (SYMBOL_NAME (msymbol) + 1, SYMBOL_NAME (sym) + 1))
5319 struct alias_list *aliases;
5321 /* Splice this symbol out of the hash chain and
5322 assign the value we have to it. */
5325 SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
5329 global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym);
5332 /* Check to see whether we need to fix up a common block. */
5333 /* Note: this code might be executed several times for
5334 the same symbol if there are multiple references. */
5336 /* If symbol has aliases, do minimal symbol fixups for each.
5337 These live aliases/references weren't added to
5338 global_sym_chain hash but may also need to be fixed up. */
5339 /* FIXME: Maybe should have added aliases to the global chain, resolved symbol name, then treated aliases as normal
5340 symbols? Still, we wouldn't want to add_to_list. */
5341 /* Now do the same for each alias of this symbol */
5343 aliases = SYMBOL_ALIASES (sym);
5346 if (SYMBOL_CLASS (rsym) == LOC_BLOCK)
5348 fix_common_block (rsym,
5349 SYMBOL_VALUE_ADDRESS (msymbol));
5353 SYMBOL_VALUE_ADDRESS (rsym)
5354 = SYMBOL_VALUE_ADDRESS (msymbol);
5356 SYMBOL_SECTION (rsym) = SYMBOL_SECTION (msymbol);
5359 rsym = aliases->sym;
5360 aliases = aliases->next;
5369 sym = SYMBOL_VALUE_CHAIN (prev);
5373 sym = global_sym_chain[hash];
5379 sym = SYMBOL_VALUE_CHAIN (sym);
5383 if (resolve_objfile == objfile)
5385 resolve_objfile = objfile;
5388 /* Change the storage class of any remaining unresolved globals to
5389 LOC_UNRESOLVED and remove them from the chain. */
5390 for (hash = 0; hash < HASHSIZE; hash++)
5392 sym = global_sym_chain[hash];
5396 sym = SYMBOL_VALUE_CHAIN (sym);
5398 /* Change the symbol address from the misleading chain value
5400 SYMBOL_VALUE_ADDRESS (prev) = 0;
5402 /* Complain about unresolved common block symbols. */
5403 if (SYMBOL_CLASS (prev) == LOC_STATIC)
5404 SYMBOL_CLASS (prev) = LOC_UNRESOLVED;
5406 complaint (&symfile_complaints,
5407 "%s: common block `%s' from global_sym_chain unresolved",
5408 objfile->name, SYMBOL_NAME (prev));
5411 memset (global_sym_chain, 0, sizeof (global_sym_chain));
5414 /* Initialize anything that needs initializing when starting to read
5415 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
5419 stabsread_init (void)
5423 /* Initialize anything that needs initializing when a completely new
5424 symbol file is specified (not just adding some symbols from another
5425 file, e.g. a shared library). */
5428 stabsread_new_init (void)
5430 /* Empty the hash table of global syms looking for values. */
5431 memset (global_sym_chain, 0, sizeof (global_sym_chain));
5434 /* Initialize anything that needs initializing at the same time as
5435 start_symtab() is called. */
5440 global_stabs = NULL; /* AIX COFF */
5441 /* Leave FILENUM of 0 free for builtin types and this file's types. */
5442 n_this_object_header_files = 1;
5443 type_vector_length = 0;
5444 type_vector = (struct type **) 0;
5446 /* FIXME: If common_block_name is not already NULL, we should complain(). */
5447 common_block_name = NULL;
5450 /* Call after end_symtab() */
5457 xfree (type_vector);
5460 type_vector_length = 0;
5461 previous_stab_code = 0;
5465 finish_global_stabs (struct objfile *objfile)
5469 patch_block_stabs (global_symbols, global_stabs, objfile);
5470 xfree (global_stabs);
5471 global_stabs = NULL;
5475 /* Find the end of the name, delimited by a ':', but don't match
5476 ObjC symbols which look like -[Foo bar::]:bla. */
5478 find_name_end (char *name)
5481 if (s[0] == '-' || *s == '+')
5483 /* Must be an ObjC method symbol. */
5486 error ("invalid symbol name \"%s\"", name);
5488 s = strchr (s, ']');
5491 error ("invalid symbol name \"%s\"", name);
5493 return strchr (s, ':');
5497 return strchr (s, ':');
5501 /* Initializer for this module */
5504 _initialize_stabsread (void)
5506 undef_types_allocated = 20;
5507 undef_types_length = 0;
5508 undef_types = (struct type **)
5509 xmalloc (undef_types_allocated * sizeof (struct type *));