1 /* Support routines for decoding "stabs" debugging information format.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free
5 Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* Support routines for reading and decoding debugging information in
25 the "stabs" format. This format is used with many systems that use
26 the a.out object file format, as well as some systems that use
27 COFF or ELF where the stabs data is placed in a special section.
28 Avoid placing any object file format specific code in this file. */
31 #include "gdb_string.h"
33 #include "gdb_obstack.h"
36 #include "expression.h"
39 #include "aout/stab_gnu.h" /* We always use GNU stabs, not native */
41 #include "aout/aout64.h"
42 #include "gdb-stabs.h"
44 #include "complaints.h"
49 #include "cp-support.h"
53 /* Ask stabsread.h to define the vars it normally declares `extern'. */
56 #include "stabsread.h" /* Our own declarations */
59 extern void _initialize_stabsread (void);
61 /* The routines that read and process a complete stabs for a C struct or
62 C++ class pass lists of data member fields and lists of member function
63 fields in an instance of a field_info structure, as defined below.
64 This is part of some reorganization of low level C++ support and is
65 expected to eventually go away... (FIXME) */
71 struct nextfield *next;
73 /* This is the raw visibility from the stab. It is not checked
74 for being one of the visibilities we recognize, so code which
75 examines this field better be able to deal. */
81 struct next_fnfieldlist
83 struct next_fnfieldlist *next;
84 struct fn_fieldlist fn_fieldlist;
90 read_one_struct_field (struct field_info *, char **, char *,
91 struct type *, struct objfile *);
93 static struct type *dbx_alloc_type (int[2], struct objfile *);
95 static long read_huge_number (char **, int, int *);
97 static struct type *error_type (char **, struct objfile *);
100 patch_block_stabs (struct pending *, struct pending_stabs *,
103 static void fix_common_block (struct symbol *, int);
105 static int read_type_number (char **, int *);
107 static struct type *read_type (char **, struct objfile *);
109 static struct type *read_range_type (char **, int[2], struct objfile *);
111 static struct type *read_sun_builtin_type (char **, int[2], struct objfile *);
113 static struct type *read_sun_floating_type (char **, int[2],
116 static struct type *read_enum_type (char **, struct type *, struct objfile *);
118 static struct type *rs6000_builtin_type (int);
121 read_member_functions (struct field_info *, char **, struct type *,
125 read_struct_fields (struct field_info *, char **, struct type *,
129 read_baseclasses (struct field_info *, char **, struct type *,
133 read_tilde_fields (struct field_info *, char **, struct type *,
136 static int attach_fn_fields_to_type (struct field_info *, struct type *);
138 static int attach_fields_to_type (struct field_info *, struct type *,
141 static struct type *read_struct_type (char **, struct type *,
145 static struct type *read_array_type (char **, struct type *,
148 static struct field *read_args (char **, int, struct objfile *, int *, int *);
150 static void add_undefined_type (struct type *);
153 read_cpp_abbrev (struct field_info *, char **, struct type *,
156 static char *find_name_end (char *name);
158 static int process_reference (char **string);
160 static CORE_ADDR ref_search_value (int refnum);
162 void stabsread_clear_cache (void);
164 static const char vptr_name[] = "_vptr$";
165 static const char vb_name[] = "_vb$";
167 /* Define this as 1 if a pcc declaration of a char or short argument
168 gives the correct address. Otherwise assume pcc gives the
169 address of the corresponding int, which is not the same on a
170 big-endian machine. */
172 #if !defined (BELIEVE_PCC_PROMOTION)
173 #define BELIEVE_PCC_PROMOTION 0
177 invalid_cpp_abbrev_complaint (const char *arg1)
179 complaint (&symfile_complaints, "invalid C++ abbreviation `%s'", arg1);
183 reg_value_complaint (int arg1, int arg2, const char *arg3)
185 complaint (&symfile_complaints,
186 "register number %d too large (max %d) in symbol %s", arg1, arg2,
191 stabs_general_complaint (const char *arg1)
193 complaint (&symfile_complaints, "%s", arg1);
196 /* Make a list of forward references which haven't been defined. */
198 static struct type **undef_types;
199 static int undef_types_allocated;
200 static int undef_types_length;
201 static struct symbol *current_symbol = NULL;
203 /* Check for and handle cretinous stabs symbol name continuation! */
204 #define STABS_CONTINUE(pp,objfile) \
206 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
207 *(pp) = next_symbol_text (objfile); \
211 /* Look up a dbx type-number pair. Return the address of the slot
212 where the type for that number-pair is stored.
213 The number-pair is in TYPENUMS.
215 This can be used for finding the type associated with that pair
216 or for associating a new type with the pair. */
218 static struct type **
219 dbx_lookup_type (int typenums[2])
221 int filenum = typenums[0];
222 int index = typenums[1];
225 struct header_file *f;
228 if (filenum == -1) /* -1,-1 is for temporary types. */
231 if (filenum < 0 || filenum >= n_this_object_header_files)
233 complaint (&symfile_complaints,
234 "Invalid symbol data: type number (%d,%d) out of range at symtab pos %d.",
235 filenum, index, symnum);
243 /* Caller wants address of address of type. We think
244 that negative (rs6k builtin) types will never appear as
245 "lvalues", (nor should they), so we stuff the real type
246 pointer into a temp, and return its address. If referenced,
247 this will do the right thing. */
248 static struct type *temp_type;
250 temp_type = rs6000_builtin_type (index);
254 /* Type is defined outside of header files.
255 Find it in this object file's type vector. */
256 if (index >= type_vector_length)
258 old_len = type_vector_length;
261 type_vector_length = INITIAL_TYPE_VECTOR_LENGTH;
262 type_vector = (struct type **)
263 xmalloc (type_vector_length * sizeof (struct type *));
265 while (index >= type_vector_length)
267 type_vector_length *= 2;
269 type_vector = (struct type **)
270 xrealloc ((char *) type_vector,
271 (type_vector_length * sizeof (struct type *)));
272 memset (&type_vector[old_len], 0,
273 (type_vector_length - old_len) * sizeof (struct type *));
275 return (&type_vector[index]);
279 real_filenum = this_object_header_files[filenum];
281 if (real_filenum >= N_HEADER_FILES (current_objfile))
283 struct type *temp_type;
284 struct type **temp_type_p;
286 warning ("GDB internal error: bad real_filenum");
289 temp_type = init_type (TYPE_CODE_ERROR, 0, 0, NULL, NULL);
290 temp_type_p = (struct type **) xmalloc (sizeof (struct type *));
291 *temp_type_p = temp_type;
295 f = HEADER_FILES (current_objfile) + real_filenum;
297 f_orig_length = f->length;
298 if (index >= f_orig_length)
300 while (index >= f->length)
304 f->vector = (struct type **)
305 xrealloc ((char *) f->vector, f->length * sizeof (struct type *));
306 memset (&f->vector[f_orig_length], 0,
307 (f->length - f_orig_length) * sizeof (struct type *));
309 return (&f->vector[index]);
313 /* Make sure there is a type allocated for type numbers TYPENUMS
314 and return the type object.
315 This can create an empty (zeroed) type object.
316 TYPENUMS may be (-1, -1) to return a new type object that is not
317 put into the type vector, and so may not be referred to by number. */
320 dbx_alloc_type (int typenums[2], struct objfile *objfile)
322 struct type **type_addr;
324 if (typenums[0] == -1)
326 return (alloc_type (objfile));
329 type_addr = dbx_lookup_type (typenums);
331 /* If we are referring to a type not known at all yet,
332 allocate an empty type for it.
333 We will fill it in later if we find out how. */
336 *type_addr = alloc_type (objfile);
342 /* for all the stabs in a given stab vector, build appropriate types
343 and fix their symbols in given symbol vector. */
346 patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs,
347 struct objfile *objfile)
357 /* for all the stab entries, find their corresponding symbols and
358 patch their types! */
360 for (ii = 0; ii < stabs->count; ++ii)
362 name = stabs->stab[ii];
363 pp = (char *) strchr (name, ':');
367 pp = (char *) strchr (pp, ':');
369 sym = find_symbol_in_list (symbols, name, pp - name);
372 /* FIXME-maybe: it would be nice if we noticed whether
373 the variable was defined *anywhere*, not just whether
374 it is defined in this compilation unit. But neither
375 xlc or GCC seem to need such a definition, and until
376 we do psymtabs (so that the minimal symbols from all
377 compilation units are available now), I'm not sure
378 how to get the information. */
380 /* On xcoff, if a global is defined and never referenced,
381 ld will remove it from the executable. There is then
382 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
383 sym = (struct symbol *)
384 obstack_alloc (&objfile->symbol_obstack,
385 sizeof (struct symbol));
387 memset (sym, 0, sizeof (struct symbol));
388 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
389 SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
390 DEPRECATED_SYMBOL_NAME (sym) =
391 obsavestring (name, pp - name, &objfile->symbol_obstack);
393 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
395 /* I don't think the linker does this with functions,
396 so as far as I know this is never executed.
397 But it doesn't hurt to check. */
399 lookup_function_type (read_type (&pp, objfile));
403 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
405 add_symbol_to_list (sym, &global_symbols);
410 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
413 lookup_function_type (read_type (&pp, objfile));
417 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
425 /* Read a number by which a type is referred to in dbx data,
426 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
427 Just a single number N is equivalent to (0,N).
428 Return the two numbers by storing them in the vector TYPENUMS.
429 TYPENUMS will then be used as an argument to dbx_lookup_type.
431 Returns 0 for success, -1 for error. */
434 read_type_number (char **pp, int *typenums)
440 typenums[0] = read_huge_number (pp, ',', &nbits);
443 typenums[1] = read_huge_number (pp, ')', &nbits);
450 typenums[1] = read_huge_number (pp, 0, &nbits);
458 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
459 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
460 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
461 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
463 /* Structure for storing pointers to reference definitions for fast lookup
464 during "process_later". */
473 #define MAX_CHUNK_REFS 100
474 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
475 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
477 static struct ref_map *ref_map;
479 /* Ptr to free cell in chunk's linked list. */
480 static int ref_count = 0;
482 /* Number of chunks malloced. */
483 static int ref_chunk = 0;
485 /* This file maintains a cache of stabs aliases found in the symbol
486 table. If the symbol table changes, this cache must be cleared
487 or we are left holding onto data in invalid obstacks. */
489 stabsread_clear_cache (void)
495 /* Create array of pointers mapping refids to symbols and stab strings.
496 Add pointers to reference definition symbols and/or their values as we
497 find them, using their reference numbers as our index.
498 These will be used later when we resolve references. */
500 ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value)
504 if (refnum >= ref_count)
505 ref_count = refnum + 1;
506 if (ref_count > ref_chunk * MAX_CHUNK_REFS)
508 int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS;
509 int new_chunks = new_slots / MAX_CHUNK_REFS + 1;
510 ref_map = (struct ref_map *)
511 xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks));
512 memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, new_chunks * REF_CHUNK_SIZE);
513 ref_chunk += new_chunks;
515 ref_map[refnum].stabs = stabs;
516 ref_map[refnum].sym = sym;
517 ref_map[refnum].value = value;
520 /* Return defined sym for the reference REFNUM. */
522 ref_search (int refnum)
524 if (refnum < 0 || refnum > ref_count)
526 return ref_map[refnum].sym;
529 /* Parse a reference id in STRING and return the resulting
530 reference number. Move STRING beyond the reference id. */
533 process_reference (char **string)
541 /* Advance beyond the initial '#'. */
544 /* Read number as reference id. */
545 while (*p && isdigit (*p))
547 refnum = refnum * 10 + *p - '0';
554 /* If STRING defines a reference, store away a pointer to the reference
555 definition for later use. Return the reference number. */
558 symbol_reference_defined (char **string)
563 refnum = process_reference (&p);
565 /* Defining symbols end in '=' */
568 /* Symbol is being defined here. */
574 /* Must be a reference. Either the symbol has already been defined,
575 or this is a forward reference to it. */
582 define_symbol (CORE_ADDR valu, char *string, int desc, int type,
583 struct objfile *objfile)
586 char *p = (char *) find_name_end (string);
591 /* We would like to eliminate nameless symbols, but keep their types.
592 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
593 to type 2, but, should not create a symbol to address that type. Since
594 the symbol will be nameless, there is no way any user can refer to it. */
598 /* Ignore syms with empty names. */
602 /* Ignore old-style symbols from cc -go */
612 /* If a nameless stab entry, all we need is the type, not the symbol.
613 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
614 nameless = (p == string || ((string[0] == ' ') && (string[1] == ':')));
616 current_symbol = sym = (struct symbol *)
617 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
618 memset (sym, 0, sizeof (struct symbol));
620 switch (type & N_TYPE)
623 SYMBOL_SECTION (sym) = SECT_OFF_TEXT (objfile);
626 SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile);
629 SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile);
633 if (processing_gcc_compilation)
635 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
636 number of bytes occupied by a type or object, which we ignore. */
637 SYMBOL_LINE (sym) = desc;
641 SYMBOL_LINE (sym) = 0; /* unknown */
644 if (is_cplus_marker (string[0]))
646 /* Special GNU C++ names. */
650 DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"),
651 &objfile->symbol_obstack);
654 case 'v': /* $vtbl_ptr_type */
655 /* Was: DEPRECATED_SYMBOL_NAME (sym) = "vptr"; */
659 DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"),
660 &objfile->symbol_obstack);
664 /* This was an anonymous type that was never fixed up. */
667 #ifdef STATIC_TRANSFORM_NAME
669 /* SunPRO (3.0 at least) static variable encoding. */
674 complaint (&symfile_complaints, "Unknown C++ symbol name `%s'",
676 goto normal; /* Do *something* with it */
682 SYMBOL_LANGUAGE (sym) = current_subfile->language;
683 SYMBOL_SET_NAMES (sym, string, p - string, objfile);
687 /* Determine the type of name being defined. */
689 /* Getting GDB to correctly skip the symbol on an undefined symbol
690 descriptor and not ever dump core is a very dodgy proposition if
691 we do things this way. I say the acorn RISC machine can just
692 fix their compiler. */
693 /* The Acorn RISC machine's compiler can put out locals that don't
694 start with "234=" or "(3,4)=", so assume anything other than the
695 deftypes we know how to handle is a local. */
696 if (!strchr ("cfFGpPrStTvVXCR", *p))
698 if (isdigit (*p) || *p == '(' || *p == '-')
707 /* c is a special case, not followed by a type-number.
708 SYMBOL:c=iVALUE for an integer constant symbol.
709 SYMBOL:c=rVALUE for a floating constant symbol.
710 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
711 e.g. "b:c=e6,0" for "const b = blob1"
712 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
715 SYMBOL_CLASS (sym) = LOC_CONST;
716 SYMBOL_TYPE (sym) = error_type (&p, objfile);
717 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
718 add_symbol_to_list (sym, &file_symbols);
729 /* FIXME-if-picky-about-floating-accuracy: Should be using
730 target arithmetic to get the value. real.c in GCC
731 probably has the necessary code. */
733 /* FIXME: lookup_fundamental_type is a hack. We should be
734 creating a type especially for the type of float constants.
735 Problem is, what type should it be?
737 Also, what should the name of this type be? Should we
738 be using 'S' constants (see stabs.texinfo) instead? */
740 SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
743 obstack_alloc (&objfile->symbol_obstack,
744 TYPE_LENGTH (SYMBOL_TYPE (sym)));
745 store_typed_floating (dbl_valu, SYMBOL_TYPE (sym), d);
746 SYMBOL_VALUE_BYTES (sym) = dbl_valu;
747 SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
752 /* Defining integer constants this way is kind of silly,
753 since 'e' constants allows the compiler to give not
754 only the value, but the type as well. C has at least
755 int, long, unsigned int, and long long as constant
756 types; other languages probably should have at least
757 unsigned as well as signed constants. */
759 /* We just need one int constant type for all objfiles.
760 It doesn't depend on languages or anything (arguably its
761 name should be a language-specific name for a type of
762 that size, but I'm inclined to say that if the compiler
763 wants a nice name for the type, it can use 'e'). */
764 static struct type *int_const_type;
766 /* Yes, this is as long as a *host* int. That is because we
768 if (int_const_type == NULL)
770 init_type (TYPE_CODE_INT,
771 sizeof (int) * HOST_CHAR_BIT / TARGET_CHAR_BIT, 0,
773 (struct objfile *) NULL);
774 SYMBOL_TYPE (sym) = int_const_type;
775 SYMBOL_VALUE (sym) = atoi (p);
776 SYMBOL_CLASS (sym) = LOC_CONST;
780 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
781 can be represented as integral.
782 e.g. "b:c=e6,0" for "const b = blob1"
783 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
785 SYMBOL_CLASS (sym) = LOC_CONST;
786 SYMBOL_TYPE (sym) = read_type (&p, objfile);
790 SYMBOL_TYPE (sym) = error_type (&p, objfile);
795 /* If the value is too big to fit in an int (perhaps because
796 it is unsigned), or something like that, we silently get
797 a bogus value. The type and everything else about it is
798 correct. Ideally, we should be using whatever we have
799 available for parsing unsigned and long long values,
801 SYMBOL_VALUE (sym) = atoi (p);
806 SYMBOL_CLASS (sym) = LOC_CONST;
807 SYMBOL_TYPE (sym) = error_type (&p, objfile);
810 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
811 add_symbol_to_list (sym, &file_symbols);
815 /* The name of a caught exception. */
816 SYMBOL_TYPE (sym) = read_type (&p, objfile);
817 SYMBOL_CLASS (sym) = LOC_LABEL;
818 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
819 SYMBOL_VALUE_ADDRESS (sym) = valu;
820 add_symbol_to_list (sym, &local_symbols);
824 /* A static function definition. */
825 SYMBOL_TYPE (sym) = read_type (&p, objfile);
826 SYMBOL_CLASS (sym) = LOC_BLOCK;
827 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
828 add_symbol_to_list (sym, &file_symbols);
829 /* fall into process_function_types. */
831 process_function_types:
832 /* Function result types are described as the result type in stabs.
833 We need to convert this to the function-returning-type-X type
834 in GDB. E.g. "int" is converted to "function returning int". */
835 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC)
836 SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym));
838 /* All functions in C++ have prototypes. Stabs does not offer an
839 explicit way to identify prototyped or unprototyped functions,
840 but both GCC and Sun CC emit stabs for the "call-as" type rather
841 than the "declared-as" type for unprototyped functions, so
842 we treat all functions as if they were prototyped. This is used
843 primarily for promotion when calling the function from GDB. */
844 TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED;
846 /* fall into process_prototype_types */
848 process_prototype_types:
849 /* Sun acc puts declared types of arguments here. */
852 struct type *ftype = SYMBOL_TYPE (sym);
857 /* Obtain a worst case guess for the number of arguments
858 by counting the semicolons. */
865 /* Allocate parameter information fields and fill them in. */
866 TYPE_FIELDS (ftype) = (struct field *)
867 TYPE_ALLOC (ftype, nsemi * sizeof (struct field));
872 /* A type number of zero indicates the start of varargs.
873 FIXME: GDB currently ignores vararg functions. */
874 if (p[0] == '0' && p[1] == '\0')
876 ptype = read_type (&p, objfile);
878 /* The Sun compilers mark integer arguments, which should
879 be promoted to the width of the calling conventions, with
880 a type which references itself. This type is turned into
881 a TYPE_CODE_VOID type by read_type, and we have to turn
882 it back into builtin_type_int here.
883 FIXME: Do we need a new builtin_type_promoted_int_arg ? */
884 if (TYPE_CODE (ptype) == TYPE_CODE_VOID)
885 ptype = builtin_type_int;
886 TYPE_FIELD_TYPE (ftype, nparams) = ptype;
887 TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0;
889 TYPE_NFIELDS (ftype) = nparams;
890 TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED;
895 /* A global function definition. */
896 SYMBOL_TYPE (sym) = read_type (&p, objfile);
897 SYMBOL_CLASS (sym) = LOC_BLOCK;
898 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
899 add_symbol_to_list (sym, &global_symbols);
900 goto process_function_types;
903 /* For a class G (global) symbol, it appears that the
904 value is not correct. It is necessary to search for the
905 corresponding linker definition to find the value.
906 These definitions appear at the end of the namelist. */
907 SYMBOL_TYPE (sym) = read_type (&p, objfile);
908 SYMBOL_CLASS (sym) = LOC_STATIC;
909 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
910 /* Don't add symbol references to global_sym_chain.
911 Symbol references don't have valid names and wont't match up with
912 minimal symbols when the global_sym_chain is relocated.
913 We'll fixup symbol references when we fixup the defining symbol. */
914 if (DEPRECATED_SYMBOL_NAME (sym) && DEPRECATED_SYMBOL_NAME (sym)[0] != '#')
916 i = hashname (DEPRECATED_SYMBOL_NAME (sym));
917 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
918 global_sym_chain[i] = sym;
920 add_symbol_to_list (sym, &global_symbols);
923 /* This case is faked by a conditional above,
924 when there is no code letter in the dbx data.
925 Dbx data never actually contains 'l'. */
928 SYMBOL_TYPE (sym) = read_type (&p, objfile);
929 SYMBOL_CLASS (sym) = LOC_LOCAL;
930 SYMBOL_VALUE (sym) = valu;
931 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
932 add_symbol_to_list (sym, &local_symbols);
937 /* pF is a two-letter code that means a function parameter in Fortran.
938 The type-number specifies the type of the return value.
939 Translate it into a pointer-to-function type. */
943 = lookup_pointer_type
944 (lookup_function_type (read_type (&p, objfile)));
947 SYMBOL_TYPE (sym) = read_type (&p, objfile);
949 SYMBOL_CLASS (sym) = LOC_ARG;
950 SYMBOL_VALUE (sym) = valu;
951 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
952 add_symbol_to_list (sym, &local_symbols);
954 if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG)
956 /* On little-endian machines, this crud is never necessary,
957 and, if the extra bytes contain garbage, is harmful. */
961 /* If it's gcc-compiled, if it says `short', believe it. */
962 if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION)
965 if (!BELIEVE_PCC_PROMOTION)
967 /* This is the signed type which arguments get promoted to. */
968 static struct type *pcc_promotion_type;
969 /* This is the unsigned type which arguments get promoted to. */
970 static struct type *pcc_unsigned_promotion_type;
972 /* Call it "int" because this is mainly C lossage. */
973 if (pcc_promotion_type == NULL)
975 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
978 if (pcc_unsigned_promotion_type == NULL)
979 pcc_unsigned_promotion_type =
980 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
981 TYPE_FLAG_UNSIGNED, "unsigned int", NULL);
983 if (BELIEVE_PCC_PROMOTION_TYPE)
985 /* This is defined on machines (e.g. sparc) where we
986 should believe the type of a PCC 'short' argument,
987 but shouldn't believe the address (the address is the
988 address of the corresponding int).
990 My guess is that this correction, as opposed to
991 changing the parameter to an 'int' (as done below,
992 for PCC on most machines), is the right thing to do
993 on all machines, but I don't want to risk breaking
994 something that already works. On most PCC machines,
995 the sparc problem doesn't come up because the calling
996 function has to zero the top bytes (not knowing
997 whether the called function wants an int or a short),
998 so there is little practical difference between an
999 int and a short (except perhaps what happens when the
1000 GDB user types "print short_arg = 0x10000;").
1002 Hacked for SunOS 4.1 by gnu@cygnus.com. In 4.1, the
1003 compiler actually produces the correct address (we
1004 don't need to fix it up). I made this code adapt so
1005 that it will offset the symbol if it was pointing at
1006 an int-aligned location and not otherwise. This way
1007 you can use the same gdb for 4.0.x and 4.1 systems.
1009 If the parameter is shorter than an int, and is
1010 integral (e.g. char, short, or unsigned equivalent),
1011 and is claimed to be passed on an integer boundary,
1012 don't believe it! Offset the parameter's address to
1013 the tail-end of that integer. */
1015 if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
1016 && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT
1017 && 0 == SYMBOL_VALUE (sym) % TYPE_LENGTH (pcc_promotion_type))
1019 SYMBOL_VALUE (sym) += TYPE_LENGTH (pcc_promotion_type)
1020 - TYPE_LENGTH (SYMBOL_TYPE (sym));
1026 /* If PCC says a parameter is a short or a char,
1027 it is really an int. */
1028 if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
1029 && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
1032 TYPE_UNSIGNED (SYMBOL_TYPE (sym))
1033 ? pcc_unsigned_promotion_type
1034 : pcc_promotion_type;
1041 /* acc seems to use P to declare the prototypes of functions that
1042 are referenced by this file. gdb is not prepared to deal
1043 with this extra information. FIXME, it ought to. */
1046 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1047 goto process_prototype_types;
1052 /* Parameter which is in a register. */
1053 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1054 SYMBOL_CLASS (sym) = LOC_REGPARM;
1055 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1056 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1058 reg_value_complaint (SYMBOL_VALUE (sym),
1059 NUM_REGS + NUM_PSEUDO_REGS,
1060 SYMBOL_PRINT_NAME (sym));
1061 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1063 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1064 add_symbol_to_list (sym, &local_symbols);
1068 /* Register variable (either global or local). */
1069 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1070 SYMBOL_CLASS (sym) = LOC_REGISTER;
1071 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1072 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1074 reg_value_complaint (SYMBOL_VALUE (sym),
1075 NUM_REGS + NUM_PSEUDO_REGS,
1076 SYMBOL_PRINT_NAME (sym));
1077 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1079 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1080 if (within_function)
1082 /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
1083 the same name to represent an argument passed in a
1084 register. GCC uses 'P' for the same case. So if we find
1085 such a symbol pair we combine it into one 'P' symbol.
1086 For Sun cc we need to do this regardless of
1087 stabs_argument_has_addr, because the compiler puts out
1088 the 'p' symbol even if it never saves the argument onto
1091 On most machines, we want to preserve both symbols, so
1092 that we can still get information about what is going on
1093 with the stack (VAX for computing args_printed, using
1094 stack slots instead of saved registers in backtraces,
1097 Note that this code illegally combines
1098 main(argc) struct foo argc; { register struct foo argc; }
1099 but this case is considered pathological and causes a warning
1100 from a decent compiler. */
1103 && local_symbols->nsyms > 0
1104 && gdbarch_stabs_argument_has_addr (current_gdbarch,
1107 struct symbol *prev_sym;
1108 prev_sym = local_symbols->symbol[local_symbols->nsyms - 1];
1109 if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG
1110 || SYMBOL_CLASS (prev_sym) == LOC_ARG)
1111 && strcmp (DEPRECATED_SYMBOL_NAME (prev_sym),
1112 DEPRECATED_SYMBOL_NAME (sym)) == 0)
1114 SYMBOL_CLASS (prev_sym) = LOC_REGPARM;
1115 /* Use the type from the LOC_REGISTER; that is the type
1116 that is actually in that register. */
1117 SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym);
1118 SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym);
1123 add_symbol_to_list (sym, &local_symbols);
1126 add_symbol_to_list (sym, &file_symbols);
1130 /* Static symbol at top level of file */
1131 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1132 SYMBOL_CLASS (sym) = LOC_STATIC;
1133 SYMBOL_VALUE_ADDRESS (sym) = valu;
1134 #ifdef STATIC_TRANSFORM_NAME
1135 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)))
1137 struct minimal_symbol *msym;
1138 msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile);
1141 DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym));
1142 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
1146 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1147 add_symbol_to_list (sym, &file_symbols);
1152 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1154 /* For a nameless type, we don't want a create a symbol, thus we
1155 did not use `sym'. Return without further processing. */
1159 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1160 SYMBOL_VALUE (sym) = valu;
1161 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1162 /* C++ vagaries: we may have a type which is derived from
1163 a base type which did not have its name defined when the
1164 derived class was output. We fill in the derived class's
1165 base part member's name here in that case. */
1166 if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL)
1167 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
1168 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)
1169 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)))
1172 for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--)
1173 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0)
1174 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) =
1175 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j));
1178 if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL)
1180 /* gcc-2.6 or later (when using -fvtable-thunks)
1181 emits a unique named type for a vtable entry.
1182 Some gdb code depends on that specific name. */
1183 extern const char vtbl_ptr_name[];
1185 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR
1186 && strcmp (DEPRECATED_SYMBOL_NAME (sym), vtbl_ptr_name))
1187 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC)
1189 /* If we are giving a name to a type such as "pointer to
1190 foo" or "function returning foo", we better not set
1191 the TYPE_NAME. If the program contains "typedef char
1192 *caddr_t;", we don't want all variables of type char
1193 * to print as caddr_t. This is not just a
1194 consequence of GDB's type management; PCC and GCC (at
1195 least through version 2.4) both output variables of
1196 either type char * or caddr_t with the type number
1197 defined in the 't' symbol for caddr_t. If a future
1198 compiler cleans this up it GDB is not ready for it
1199 yet, but if it becomes ready we somehow need to
1200 disable this check (without breaking the PCC/GCC2.4
1205 Fortunately, this check seems not to be necessary
1206 for anything except pointers or functions. */
1207 /* ezannoni: 2000-10-26. This seems to apply for
1208 versions of gcc older than 2.8. This was the original
1209 problem: with the following code gdb would tell that
1210 the type for name1 is caddr_t, and func is char()
1211 typedef char *caddr_t;
1223 /* Pascal accepts names for pointer types. */
1224 if (current_subfile->language == language_pascal)
1226 TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym);
1230 TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym);
1233 add_symbol_to_list (sym, &file_symbols);
1237 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1238 by 't' which means we are typedef'ing it as well. */
1239 synonym = *p == 't';
1244 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1246 /* For a nameless type, we don't want a create a symbol, thus we
1247 did not use `sym'. Return without further processing. */
1251 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1252 SYMBOL_VALUE (sym) = valu;
1253 SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
1254 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0)
1255 TYPE_TAG_NAME (SYMBOL_TYPE (sym))
1256 = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym));
1257 add_symbol_to_list (sym, &file_symbols);
1261 /* Clone the sym and then modify it. */
1262 struct symbol *typedef_sym = (struct symbol *)
1263 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
1264 *typedef_sym = *sym;
1265 SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF;
1266 SYMBOL_VALUE (typedef_sym) = valu;
1267 SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN;
1268 if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
1269 TYPE_NAME (SYMBOL_TYPE (sym))
1270 = obconcat (&objfile->type_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym));
1271 add_symbol_to_list (typedef_sym, &file_symbols);
1276 /* Static symbol of local scope */
1277 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1278 SYMBOL_CLASS (sym) = LOC_STATIC;
1279 SYMBOL_VALUE_ADDRESS (sym) = valu;
1280 #ifdef STATIC_TRANSFORM_NAME
1281 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)))
1283 struct minimal_symbol *msym;
1284 msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile);
1287 DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym));
1288 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
1292 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1293 add_symbol_to_list (sym, &local_symbols);
1297 /* Reference parameter */
1298 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1299 SYMBOL_CLASS (sym) = LOC_REF_ARG;
1300 SYMBOL_VALUE (sym) = valu;
1301 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1302 add_symbol_to_list (sym, &local_symbols);
1306 /* Reference parameter which is in a register. */
1307 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1308 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
1309 SYMBOL_VALUE (sym) = STAB_REG_TO_REGNUM (valu);
1310 if (SYMBOL_VALUE (sym) >= NUM_REGS + NUM_PSEUDO_REGS)
1312 reg_value_complaint (SYMBOL_VALUE (sym),
1313 NUM_REGS + NUM_PSEUDO_REGS,
1314 SYMBOL_PRINT_NAME (sym));
1315 SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */
1317 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1318 add_symbol_to_list (sym, &local_symbols);
1322 /* This is used by Sun FORTRAN for "function result value".
1323 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1324 that Pascal uses it too, but when I tried it Pascal used
1325 "x:3" (local symbol) instead. */
1326 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1327 SYMBOL_CLASS (sym) = LOC_LOCAL;
1328 SYMBOL_VALUE (sym) = valu;
1329 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1330 add_symbol_to_list (sym, &local_symbols);
1334 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1335 SYMBOL_CLASS (sym) = LOC_CONST;
1336 SYMBOL_VALUE (sym) = 0;
1337 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1338 add_symbol_to_list (sym, &file_symbols);
1342 /* Some systems pass variables of certain types by reference instead
1343 of by value, i.e. they will pass the address of a structure (in a
1344 register or on the stack) instead of the structure itself. */
1346 if (gdbarch_stabs_argument_has_addr (current_gdbarch, SYMBOL_TYPE (sym))
1347 && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG))
1349 /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for
1350 variables passed in a register). */
1351 if (SYMBOL_CLASS (sym) == LOC_REGPARM)
1352 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
1353 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
1354 and subsequent arguments on SPARC, for example). */
1355 else if (SYMBOL_CLASS (sym) == LOC_ARG)
1356 SYMBOL_CLASS (sym) = LOC_REF_ARG;
1362 /* Skip rest of this symbol and return an error type.
1364 General notes on error recovery: error_type always skips to the
1365 end of the symbol (modulo cretinous dbx symbol name continuation).
1366 Thus code like this:
1368 if (*(*pp)++ != ';')
1369 return error_type (pp, objfile);
1371 is wrong because if *pp starts out pointing at '\0' (typically as the
1372 result of an earlier error), it will be incremented to point to the
1373 start of the next symbol, which might produce strange results, at least
1374 if you run off the end of the string table. Instead use
1377 return error_type (pp, objfile);
1383 foo = error_type (pp, objfile);
1387 And in case it isn't obvious, the point of all this hair is so the compiler
1388 can define new types and new syntaxes, and old versions of the
1389 debugger will be able to read the new symbol tables. */
1391 static struct type *
1392 error_type (char **pp, struct objfile *objfile)
1394 complaint (&symfile_complaints, "couldn't parse type; debugger out of date?");
1397 /* Skip to end of symbol. */
1398 while (**pp != '\0')
1403 /* Check for and handle cretinous dbx symbol name continuation! */
1404 if ((*pp)[-1] == '\\' || (*pp)[-1] == '?')
1406 *pp = next_symbol_text (objfile);
1413 return (builtin_type_error);
1417 /* Read type information or a type definition; return the type. Even
1418 though this routine accepts either type information or a type
1419 definition, the distinction is relevant--some parts of stabsread.c
1420 assume that type information starts with a digit, '-', or '(' in
1421 deciding whether to call read_type. */
1423 static struct type *
1424 read_type (char **pp, struct objfile *objfile)
1426 struct type *type = 0;
1429 char type_descriptor;
1431 /* Size in bits of type if specified by a type attribute, or -1 if
1432 there is no size attribute. */
1435 /* Used to distinguish string and bitstring from char-array and set. */
1438 /* Used to distinguish vector from array. */
1441 /* Read type number if present. The type number may be omitted.
1442 for instance in a two-dimensional array declared with type
1443 "ar1;1;10;ar1;1;10;4". */
1444 if ((**pp >= '0' && **pp <= '9')
1448 if (read_type_number (pp, typenums) != 0)
1449 return error_type (pp, objfile);
1451 /* Type is not being defined here. Either it already exists,
1452 or this is a forward reference to it. dbx_alloc_type handles
1455 return dbx_alloc_type (typenums, objfile);
1457 /* Type is being defined here. */
1459 Also skip the type descriptor - we get it below with (*pp)[-1]. */
1464 /* 'typenums=' not present, type is anonymous. Read and return
1465 the definition, but don't put it in the type vector. */
1466 typenums[0] = typenums[1] = -1;
1471 type_descriptor = (*pp)[-1];
1472 switch (type_descriptor)
1476 enum type_code code;
1478 /* Used to index through file_symbols. */
1479 struct pending *ppt;
1482 /* Name including "struct", etc. */
1486 char *from, *to, *p, *q1, *q2;
1488 /* Set the type code according to the following letter. */
1492 code = TYPE_CODE_STRUCT;
1495 code = TYPE_CODE_UNION;
1498 code = TYPE_CODE_ENUM;
1502 /* Complain and keep going, so compilers can invent new
1503 cross-reference types. */
1504 complaint (&symfile_complaints,
1505 "Unrecognized cross-reference type `%c'", (*pp)[0]);
1506 code = TYPE_CODE_STRUCT;
1511 q1 = strchr (*pp, '<');
1512 p = strchr (*pp, ':');
1514 return error_type (pp, objfile);
1515 if (q1 && p > q1 && p[1] == ':')
1517 int nesting_level = 0;
1518 for (q2 = q1; *q2; q2++)
1522 else if (*q2 == '>')
1524 else if (*q2 == ':' && nesting_level == 0)
1529 return error_type (pp, objfile);
1532 (char *) obstack_alloc (&objfile->type_obstack, p - *pp + 1);
1534 /* Copy the name. */
1540 /* Set the pointer ahead of the name which we just read, and
1545 /* If this type has already been declared, then reuse the same
1546 type, rather than allocating a new one. This saves some
1549 for (ppt = file_symbols; ppt; ppt = ppt->next)
1550 for (i = 0; i < ppt->nsyms; i++)
1552 struct symbol *sym = ppt->symbol[i];
1554 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
1555 && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
1556 && (TYPE_CODE (SYMBOL_TYPE (sym)) == code)
1557 && strcmp (DEPRECATED_SYMBOL_NAME (sym), type_name) == 0)
1559 obstack_free (&objfile->type_obstack, type_name);
1560 type = SYMBOL_TYPE (sym);
1561 if (typenums[0] != -1)
1562 *dbx_lookup_type (typenums) = type;
1567 /* Didn't find the type to which this refers, so we must
1568 be dealing with a forward reference. Allocate a type
1569 structure for it, and keep track of it so we can
1570 fill in the rest of the fields when we get the full
1572 type = dbx_alloc_type (typenums, objfile);
1573 TYPE_CODE (type) = code;
1574 TYPE_TAG_NAME (type) = type_name;
1575 INIT_CPLUS_SPECIFIC (type);
1576 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
1578 add_undefined_type (type);
1582 case '-': /* RS/6000 built-in type */
1596 /* We deal with something like t(1,2)=(3,4)=... which
1597 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
1599 /* Allocate and enter the typedef type first.
1600 This handles recursive types. */
1601 type = dbx_alloc_type (typenums, objfile);
1602 TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
1604 struct type *xtype = read_type (pp, objfile);
1607 /* It's being defined as itself. That means it is "void". */
1608 TYPE_CODE (type) = TYPE_CODE_VOID;
1609 TYPE_LENGTH (type) = 1;
1611 else if (type_size >= 0 || is_string)
1613 /* This is the absolute wrong way to construct types. Every
1614 other debug format has found a way around this problem and
1615 the related problems with unnecessarily stubbed types;
1616 someone motivated should attempt to clean up the issue
1617 here as well. Once a type pointed to has been created it
1618 should not be modified.
1620 Well, it's not *absolutely* wrong. Constructing recursive
1621 types (trees, linked lists) necessarily entails modifying
1622 types after creating them. Constructing any loop structure
1623 entails side effects. The Dwarf 2 reader does handle this
1624 more gracefully (it never constructs more than once
1625 instance of a type object, so it doesn't have to copy type
1626 objects wholesale), but it still mutates type objects after
1627 other folks have references to them.
1629 Keep in mind that this circularity/mutation issue shows up
1630 at the source language level, too: C's "incomplete types",
1631 for example. So the proper cleanup, I think, would be to
1632 limit GDB's type smashing to match exactly those required
1633 by the source language. So GDB could have a
1634 "complete_this_type" function, but never create unnecessary
1635 copies of a type otherwise. */
1636 replace_type (type, xtype);
1637 TYPE_NAME (type) = NULL;
1638 TYPE_TAG_NAME (type) = NULL;
1642 TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
1643 TYPE_TARGET_TYPE (type) = xtype;
1648 /* In the following types, we must be sure to overwrite any existing
1649 type that the typenums refer to, rather than allocating a new one
1650 and making the typenums point to the new one. This is because there
1651 may already be pointers to the existing type (if it had been
1652 forward-referenced), and we must change it to a pointer, function,
1653 reference, or whatever, *in-place*. */
1655 case '*': /* Pointer to another type */
1656 type1 = read_type (pp, objfile);
1657 type = make_pointer_type (type1, dbx_lookup_type (typenums));
1660 case '&': /* Reference to another type */
1661 type1 = read_type (pp, objfile);
1662 type = make_reference_type (type1, dbx_lookup_type (typenums));
1665 case 'f': /* Function returning another type */
1666 type1 = read_type (pp, objfile);
1667 type = make_function_type (type1, dbx_lookup_type (typenums));
1670 case 'g': /* Prototyped function. (Sun) */
1672 /* Unresolved questions:
1674 - According to Sun's ``STABS Interface Manual'', for 'f'
1675 and 'F' symbol descriptors, a `0' in the argument type list
1676 indicates a varargs function. But it doesn't say how 'g'
1677 type descriptors represent that info. Someone with access
1678 to Sun's toolchain should try it out.
1680 - According to the comment in define_symbol (search for
1681 `process_prototype_types:'), Sun emits integer arguments as
1682 types which ref themselves --- like `void' types. Do we
1683 have to deal with that here, too? Again, someone with
1684 access to Sun's toolchain should try it out and let us
1687 const char *type_start = (*pp) - 1;
1688 struct type *return_type = read_type (pp, objfile);
1689 struct type *func_type
1690 = make_function_type (return_type, dbx_lookup_type (typenums));
1693 struct type_list *next;
1697 while (**pp && **pp != '#')
1699 struct type *arg_type = read_type (pp, objfile);
1700 struct type_list *new = alloca (sizeof (*new));
1701 new->type = arg_type;
1702 new->next = arg_types;
1710 complaint (&symfile_complaints,
1711 "Prototyped function type didn't end arguments with `#':\n%s",
1715 /* If there is just one argument whose type is `void', then
1716 that's just an empty argument list. */
1718 && ! arg_types->next
1719 && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID)
1722 TYPE_FIELDS (func_type)
1723 = (struct field *) TYPE_ALLOC (func_type,
1724 num_args * sizeof (struct field));
1725 memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field));
1728 struct type_list *t;
1730 /* We stuck each argument type onto the front of the list
1731 when we read it, so the list is reversed. Build the
1732 fields array right-to-left. */
1733 for (t = arg_types, i = num_args - 1; t; t = t->next, i--)
1734 TYPE_FIELD_TYPE (func_type, i) = t->type;
1736 TYPE_NFIELDS (func_type) = num_args;
1737 TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED;
1743 case 'k': /* Const qualifier on some type (Sun) */
1744 type = read_type (pp, objfile);
1745 type = make_cv_type (1, TYPE_VOLATILE (type), type,
1746 dbx_lookup_type (typenums));
1749 case 'B': /* Volatile qual on some type (Sun) */
1750 type = read_type (pp, objfile);
1751 type = make_cv_type (TYPE_CONST (type), 1, type,
1752 dbx_lookup_type (typenums));
1756 if (isdigit (**pp) || **pp == '(' || **pp == '-')
1757 { /* Member (class & variable) type */
1758 /* FIXME -- we should be doing smash_to_XXX types here. */
1760 struct type *domain = read_type (pp, objfile);
1761 struct type *memtype;
1764 /* Invalid member type data format. */
1765 return error_type (pp, objfile);
1768 memtype = read_type (pp, objfile);
1769 type = dbx_alloc_type (typenums, objfile);
1770 smash_to_member_type (type, domain, memtype);
1773 /* type attribute */
1776 /* Skip to the semicolon. */
1777 while (**pp != ';' && **pp != '\0')
1780 return error_type (pp, objfile);
1782 ++ * pp; /* Skip the semicolon. */
1786 case 's': /* Size attribute */
1787 type_size = atoi (attr + 1);
1792 case 'S': /* String attribute */
1793 /* FIXME: check to see if following type is array? */
1797 case 'V': /* Vector attribute */
1798 /* FIXME: check to see if following type is array? */
1803 /* Ignore unrecognized type attributes, so future compilers
1804 can invent new ones. */
1812 case '#': /* Method (class & fn) type */
1813 if ((*pp)[0] == '#')
1815 /* We'll get the parameter types from the name. */
1816 struct type *return_type;
1819 return_type = read_type (pp, objfile);
1820 if (*(*pp)++ != ';')
1821 complaint (&symfile_complaints,
1822 "invalid (minimal) member type data format at symtab pos %d.",
1824 type = allocate_stub_method (return_type);
1825 if (typenums[0] != -1)
1826 *dbx_lookup_type (typenums) = type;
1830 struct type *domain = read_type (pp, objfile);
1831 struct type *return_type;
1836 /* Invalid member type data format. */
1837 return error_type (pp, objfile);
1841 return_type = read_type (pp, objfile);
1842 args = read_args (pp, ';', objfile, &nargs, &varargs);
1843 type = dbx_alloc_type (typenums, objfile);
1844 smash_to_method_type (type, domain, return_type, args,
1849 case 'r': /* Range type */
1850 type = read_range_type (pp, typenums, objfile);
1851 if (typenums[0] != -1)
1852 *dbx_lookup_type (typenums) = type;
1857 /* Sun ACC builtin int type */
1858 type = read_sun_builtin_type (pp, typenums, objfile);
1859 if (typenums[0] != -1)
1860 *dbx_lookup_type (typenums) = type;
1864 case 'R': /* Sun ACC builtin float type */
1865 type = read_sun_floating_type (pp, typenums, objfile);
1866 if (typenums[0] != -1)
1867 *dbx_lookup_type (typenums) = type;
1870 case 'e': /* Enumeration type */
1871 type = dbx_alloc_type (typenums, objfile);
1872 type = read_enum_type (pp, type, objfile);
1873 if (typenums[0] != -1)
1874 *dbx_lookup_type (typenums) = type;
1877 case 's': /* Struct type */
1878 case 'u': /* Union type */
1880 enum type_code type_code = TYPE_CODE_UNDEF;
1881 type = dbx_alloc_type (typenums, objfile);
1882 switch (type_descriptor)
1885 type_code = TYPE_CODE_STRUCT;
1888 type_code = TYPE_CODE_UNION;
1891 type = read_struct_type (pp, type, type_code, objfile);
1895 case 'a': /* Array type */
1897 return error_type (pp, objfile);
1900 type = dbx_alloc_type (typenums, objfile);
1901 type = read_array_type (pp, type, objfile);
1903 TYPE_CODE (type) = TYPE_CODE_STRING;
1905 TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;
1908 case 'S': /* Set or bitstring type */
1909 type1 = read_type (pp, objfile);
1910 type = create_set_type ((struct type *) NULL, type1);
1912 TYPE_CODE (type) = TYPE_CODE_BITSTRING;
1913 if (typenums[0] != -1)
1914 *dbx_lookup_type (typenums) = type;
1918 --*pp; /* Go back to the symbol in error */
1919 /* Particularly important if it was \0! */
1920 return error_type (pp, objfile);
1925 warning ("GDB internal error, type is NULL in stabsread.c\n");
1926 return error_type (pp, objfile);
1929 /* Size specified in a type attribute overrides any other size. */
1930 if (type_size != -1)
1931 TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1936 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1937 Return the proper type node for a given builtin type number. */
1939 static struct type *
1940 rs6000_builtin_type (int typenum)
1942 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1943 #define NUMBER_RECOGNIZED 34
1944 /* This includes an empty slot for type number -0. */
1945 static struct type *negative_types[NUMBER_RECOGNIZED + 1];
1946 struct type *rettype = NULL;
1948 if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED)
1950 complaint (&symfile_complaints, "Unknown builtin type %d", typenum);
1951 return builtin_type_error;
1953 if (negative_types[-typenum] != NULL)
1954 return negative_types[-typenum];
1956 #if TARGET_CHAR_BIT != 8
1957 #error This code wrong for TARGET_CHAR_BIT not 8
1958 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1959 that if that ever becomes not true, the correct fix will be to
1960 make the size in the struct type to be in bits, not in units of
1967 /* The size of this and all the other types are fixed, defined
1968 by the debugging format. If there is a type called "int" which
1969 is other than 32 bits, then it should use a new negative type
1970 number (or avoid negative type numbers for that case).
1971 See stabs.texinfo. */
1972 rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
1975 rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL);
1978 rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
1981 rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL);
1984 rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED,
1985 "unsigned char", NULL);
1988 rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL);
1991 rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED,
1992 "unsigned short", NULL);
1995 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
1996 "unsigned int", NULL);
1999 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2002 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2003 "unsigned long", NULL);
2006 rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
2009 /* IEEE single precision (32 bit). */
2010 rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
2013 /* IEEE double precision (64 bit). */
2014 rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
2017 /* This is an IEEE double on the RS/6000, and different machines with
2018 different sizes for "long double" should use different negative
2019 type numbers. See stabs.texinfo. */
2020 rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL);
2023 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL);
2026 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2030 rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL);
2033 rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL);
2036 rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL);
2039 rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED,
2043 rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED,
2047 rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED,
2051 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2055 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2059 /* Complex type consisting of two IEEE single precision values. */
2060 rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL);
2061 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float",
2065 /* Complex type consisting of two IEEE double precision values. */
2066 rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL);
2067 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double",
2071 rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL);
2074 rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL);
2077 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL);
2080 rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL);
2083 rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL);
2086 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2087 "unsigned long long", NULL);
2090 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2094 rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL);
2097 negative_types[-typenum] = rettype;
2101 /* This page contains subroutines of read_type. */
2103 /* Replace *OLD_NAME with the method name portion of PHYSNAME. */
2106 update_method_name_from_physname (char **old_name, char *physname)
2110 method_name = method_name_from_physname (physname);
2112 if (method_name == NULL)
2114 complaint (&symfile_complaints,
2115 "Method has bad physname %s\n", physname);
2119 if (strcmp (*old_name, method_name) != 0)
2122 *old_name = method_name;
2125 xfree (method_name);
2128 /* Read member function stabs info for C++ classes. The form of each member
2131 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2133 An example with two member functions is:
2135 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2137 For the case of overloaded operators, the format is op$::*.funcs, where
2138 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2139 name (such as `+=') and `.' marks the end of the operator name.
2141 Returns 1 for success, 0 for failure. */
2144 read_member_functions (struct field_info *fip, char **pp, struct type *type,
2145 struct objfile *objfile)
2149 /* Total number of member functions defined in this class. If the class
2150 defines two `f' functions, and one `g' function, then this will have
2152 int total_length = 0;
2156 struct next_fnfield *next;
2157 struct fn_field fn_field;
2160 struct type *look_ahead_type;
2161 struct next_fnfieldlist *new_fnlist;
2162 struct next_fnfield *new_sublist;
2166 /* Process each list until we find something that is not a member function
2167 or find the end of the functions. */
2171 /* We should be positioned at the start of the function name.
2172 Scan forward to find the first ':' and if it is not the
2173 first of a "::" delimiter, then this is not a member function. */
2185 look_ahead_type = NULL;
2188 new_fnlist = (struct next_fnfieldlist *)
2189 xmalloc (sizeof (struct next_fnfieldlist));
2190 make_cleanup (xfree, new_fnlist);
2191 memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
2193 if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2]))
2195 /* This is a completely wierd case. In order to stuff in the
2196 names that might contain colons (the usual name delimiter),
2197 Mike Tiemann defined a different name format which is
2198 signalled if the identifier is "op$". In that case, the
2199 format is "op$::XXXX." where XXXX is the name. This is
2200 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2201 /* This lets the user type "break operator+".
2202 We could just put in "+" as the name, but that wouldn't
2204 static char opname[32] = "op$";
2205 char *o = opname + 3;
2207 /* Skip past '::'. */
2210 STABS_CONTINUE (pp, objfile);
2216 main_fn_name = savestring (opname, o - opname);
2222 main_fn_name = savestring (*pp, p - *pp);
2223 /* Skip past '::'. */
2226 new_fnlist->fn_fieldlist.name = main_fn_name;
2231 (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
2232 make_cleanup (xfree, new_sublist);
2233 memset (new_sublist, 0, sizeof (struct next_fnfield));
2235 /* Check for and handle cretinous dbx symbol name continuation! */
2236 if (look_ahead_type == NULL)
2239 STABS_CONTINUE (pp, objfile);
2241 new_sublist->fn_field.type = read_type (pp, objfile);
2244 /* Invalid symtab info for member function. */
2250 /* g++ version 1 kludge */
2251 new_sublist->fn_field.type = look_ahead_type;
2252 look_ahead_type = NULL;
2262 /* If this is just a stub, then we don't have the real name here. */
2264 if (TYPE_STUB (new_sublist->fn_field.type))
2266 if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
2267 TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
2268 new_sublist->fn_field.is_stub = 1;
2270 new_sublist->fn_field.physname = savestring (*pp, p - *pp);
2273 /* Set this member function's visibility fields. */
2276 case VISIBILITY_PRIVATE:
2277 new_sublist->fn_field.is_private = 1;
2279 case VISIBILITY_PROTECTED:
2280 new_sublist->fn_field.is_protected = 1;
2284 STABS_CONTINUE (pp, objfile);
2287 case 'A': /* Normal functions. */
2288 new_sublist->fn_field.is_const = 0;
2289 new_sublist->fn_field.is_volatile = 0;
2292 case 'B': /* `const' member functions. */
2293 new_sublist->fn_field.is_const = 1;
2294 new_sublist->fn_field.is_volatile = 0;
2297 case 'C': /* `volatile' member function. */
2298 new_sublist->fn_field.is_const = 0;
2299 new_sublist->fn_field.is_volatile = 1;
2302 case 'D': /* `const volatile' member function. */
2303 new_sublist->fn_field.is_const = 1;
2304 new_sublist->fn_field.is_volatile = 1;
2307 case '*': /* File compiled with g++ version 1 -- no info */
2312 complaint (&symfile_complaints,
2313 "const/volatile indicator missing, got '%c'", **pp);
2322 /* virtual member function, followed by index.
2323 The sign bit is set to distinguish pointers-to-methods
2324 from virtual function indicies. Since the array is
2325 in words, the quantity must be shifted left by 1
2326 on 16 bit machine, and by 2 on 32 bit machine, forcing
2327 the sign bit out, and usable as a valid index into
2328 the array. Remove the sign bit here. */
2329 new_sublist->fn_field.voffset =
2330 (0x7fffffff & read_huge_number (pp, ';', &nbits)) + 2;
2334 STABS_CONTINUE (pp, objfile);
2335 if (**pp == ';' || **pp == '\0')
2337 /* Must be g++ version 1. */
2338 new_sublist->fn_field.fcontext = 0;
2342 /* Figure out from whence this virtual function came.
2343 It may belong to virtual function table of
2344 one of its baseclasses. */
2345 look_ahead_type = read_type (pp, objfile);
2348 /* g++ version 1 overloaded methods. */
2352 new_sublist->fn_field.fcontext = look_ahead_type;
2361 look_ahead_type = NULL;
2367 /* static member function. */
2369 int slen = strlen (main_fn_name);
2371 new_sublist->fn_field.voffset = VOFFSET_STATIC;
2373 /* For static member functions, we can't tell if they
2374 are stubbed, as they are put out as functions, and not as
2376 GCC v2 emits the fully mangled name if
2377 dbxout.c:flag_minimal_debug is not set, so we have to
2378 detect a fully mangled physname here and set is_stub
2379 accordingly. Fully mangled physnames in v2 start with
2380 the member function name, followed by two underscores.
2381 GCC v3 currently always emits stubbed member functions,
2382 but with fully mangled physnames, which start with _Z. */
2383 if (!(strncmp (new_sublist->fn_field.physname,
2384 main_fn_name, slen) == 0
2385 && new_sublist->fn_field.physname[slen] == '_'
2386 && new_sublist->fn_field.physname[slen + 1] == '_'))
2388 new_sublist->fn_field.is_stub = 1;
2395 complaint (&symfile_complaints,
2396 "member function type missing, got '%c'", (*pp)[-1]);
2397 /* Fall through into normal member function. */
2400 /* normal member function. */
2401 new_sublist->fn_field.voffset = 0;
2402 new_sublist->fn_field.fcontext = 0;
2406 new_sublist->next = sublist;
2407 sublist = new_sublist;
2409 STABS_CONTINUE (pp, objfile);
2411 while (**pp != ';' && **pp != '\0');
2414 STABS_CONTINUE (pp, objfile);
2416 /* Skip GCC 3.X member functions which are duplicates of the callable
2417 constructor/destructor. */
2418 if (strcmp (main_fn_name, "__base_ctor") == 0
2419 || strcmp (main_fn_name, "__base_dtor") == 0
2420 || strcmp (main_fn_name, "__deleting_dtor") == 0)
2422 xfree (main_fn_name);
2427 int has_destructor = 0, has_other = 0;
2429 struct next_fnfield *tmp_sublist;
2431 /* Various versions of GCC emit various mostly-useless
2432 strings in the name field for special member functions.
2434 For stub methods, we need to defer correcting the name
2435 until we are ready to unstub the method, because the current
2436 name string is used by gdb_mangle_name. The only stub methods
2437 of concern here are GNU v2 operators; other methods have their
2438 names correct (see caveat below).
2440 For non-stub methods, in GNU v3, we have a complete physname.
2441 Therefore we can safely correct the name now. This primarily
2442 affects constructors and destructors, whose name will be
2443 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
2444 operators will also have incorrect names; for instance,
2445 "operator int" will be named "operator i" (i.e. the type is
2448 For non-stub methods in GNU v2, we have no easy way to
2449 know if we have a complete physname or not. For most
2450 methods the result depends on the platform (if CPLUS_MARKER
2451 can be `$' or `.', it will use minimal debug information, or
2452 otherwise the full physname will be included).
2454 Rather than dealing with this, we take a different approach.
2455 For v3 mangled names, we can use the full physname; for v2,
2456 we use cplus_demangle_opname (which is actually v2 specific),
2457 because the only interesting names are all operators - once again
2458 barring the caveat below. Skip this process if any method in the
2459 group is a stub, to prevent our fouling up the workings of
2462 The caveat: GCC 2.95.x (and earlier?) put constructors and
2463 destructors in the same method group. We need to split this
2464 into two groups, because they should have different names.
2465 So for each method group we check whether it contains both
2466 routines whose physname appears to be a destructor (the physnames
2467 for and destructors are always provided, due to quirks in v2
2468 mangling) and routines whose physname does not appear to be a
2469 destructor. If so then we break up the list into two halves.
2470 Even if the constructors and destructors aren't in the same group
2471 the destructor will still lack the leading tilde, so that also
2474 So, to summarize what we expect and handle here:
2476 Given Given Real Real Action
2477 method name physname physname method name
2479 __opi [none] __opi__3Foo operator int opname
2481 Foo _._3Foo _._3Foo ~Foo separate and
2483 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
2484 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
2487 tmp_sublist = sublist;
2488 while (tmp_sublist != NULL)
2490 if (tmp_sublist->fn_field.is_stub)
2492 if (tmp_sublist->fn_field.physname[0] == '_'
2493 && tmp_sublist->fn_field.physname[1] == 'Z')
2496 if (is_destructor_name (tmp_sublist->fn_field.physname))
2501 tmp_sublist = tmp_sublist->next;
2504 if (has_destructor && has_other)
2506 struct next_fnfieldlist *destr_fnlist;
2507 struct next_fnfield *last_sublist;
2509 /* Create a new fn_fieldlist for the destructors. */
2511 destr_fnlist = (struct next_fnfieldlist *)
2512 xmalloc (sizeof (struct next_fnfieldlist));
2513 make_cleanup (xfree, destr_fnlist);
2514 memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist));
2515 destr_fnlist->fn_fieldlist.name
2516 = obconcat (&objfile->type_obstack, "", "~",
2517 new_fnlist->fn_fieldlist.name);
2519 destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
2520 obstack_alloc (&objfile->type_obstack,
2521 sizeof (struct fn_field) * has_destructor);
2522 memset (destr_fnlist->fn_fieldlist.fn_fields, 0,
2523 sizeof (struct fn_field) * has_destructor);
2524 tmp_sublist = sublist;
2525 last_sublist = NULL;
2527 while (tmp_sublist != NULL)
2529 if (!is_destructor_name (tmp_sublist->fn_field.physname))
2531 tmp_sublist = tmp_sublist->next;
2535 destr_fnlist->fn_fieldlist.fn_fields[i++]
2536 = tmp_sublist->fn_field;
2538 last_sublist->next = tmp_sublist->next;
2540 sublist = tmp_sublist->next;
2541 last_sublist = tmp_sublist;
2542 tmp_sublist = tmp_sublist->next;
2545 destr_fnlist->fn_fieldlist.length = has_destructor;
2546 destr_fnlist->next = fip->fnlist;
2547 fip->fnlist = destr_fnlist;
2549 total_length += has_destructor;
2550 length -= has_destructor;
2554 /* v3 mangling prevents the use of abbreviated physnames,
2555 so we can do this here. There are stubbed methods in v3
2557 - in -gstabs instead of -gstabs+
2558 - or for static methods, which are output as a function type
2559 instead of a method type. */
2561 update_method_name_from_physname (&new_fnlist->fn_fieldlist.name,
2562 sublist->fn_field.physname);
2564 else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~')
2566 new_fnlist->fn_fieldlist.name = concat ("~", main_fn_name, NULL);
2567 xfree (main_fn_name);
2571 char dem_opname[256];
2573 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
2574 dem_opname, DMGL_ANSI);
2576 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
2579 new_fnlist->fn_fieldlist.name
2580 = obsavestring (dem_opname, strlen (dem_opname),
2581 &objfile->type_obstack);
2584 new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
2585 obstack_alloc (&objfile->type_obstack,
2586 sizeof (struct fn_field) * length);
2587 memset (new_fnlist->fn_fieldlist.fn_fields, 0,
2588 sizeof (struct fn_field) * length);
2589 for (i = length; (i--, sublist); sublist = sublist->next)
2591 new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
2594 new_fnlist->fn_fieldlist.length = length;
2595 new_fnlist->next = fip->fnlist;
2596 fip->fnlist = new_fnlist;
2598 total_length += length;
2604 ALLOCATE_CPLUS_STRUCT_TYPE (type);
2605 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
2606 TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields);
2607 memset (TYPE_FN_FIELDLISTS (type), 0,
2608 sizeof (struct fn_fieldlist) * nfn_fields);
2609 TYPE_NFN_FIELDS (type) = nfn_fields;
2610 TYPE_NFN_FIELDS_TOTAL (type) = total_length;
2616 /* Special GNU C++ name.
2618 Returns 1 for success, 0 for failure. "failure" means that we can't
2619 keep parsing and it's time for error_type(). */
2622 read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type,
2623 struct objfile *objfile)
2628 struct type *context;
2638 /* At this point, *pp points to something like "22:23=*22...",
2639 where the type number before the ':' is the "context" and
2640 everything after is a regular type definition. Lookup the
2641 type, find it's name, and construct the field name. */
2643 context = read_type (pp, objfile);
2647 case 'f': /* $vf -- a virtual function table pointer */
2648 name = type_name_no_tag (context);
2653 fip->list->field.name =
2654 obconcat (&objfile->type_obstack, vptr_name, name, "");
2657 case 'b': /* $vb -- a virtual bsomethingorother */
2658 name = type_name_no_tag (context);
2661 complaint (&symfile_complaints,
2662 "C++ abbreviated type name unknown at symtab pos %d",
2666 fip->list->field.name =
2667 obconcat (&objfile->type_obstack, vb_name, name, "");
2671 invalid_cpp_abbrev_complaint (*pp);
2672 fip->list->field.name =
2673 obconcat (&objfile->type_obstack,
2674 "INVALID_CPLUSPLUS_ABBREV", "", "");
2678 /* At this point, *pp points to the ':'. Skip it and read the
2684 invalid_cpp_abbrev_complaint (*pp);
2687 fip->list->field.type = read_type (pp, objfile);
2689 (*pp)++; /* Skip the comma. */
2695 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits);
2699 /* This field is unpacked. */
2700 FIELD_BITSIZE (fip->list->field) = 0;
2701 fip->list->visibility = VISIBILITY_PRIVATE;
2705 invalid_cpp_abbrev_complaint (*pp);
2706 /* We have no idea what syntax an unrecognized abbrev would have, so
2707 better return 0. If we returned 1, we would need to at least advance
2708 *pp to avoid an infinite loop. */
2715 read_one_struct_field (struct field_info *fip, char **pp, char *p,
2716 struct type *type, struct objfile *objfile)
2718 fip->list->field.name =
2719 obsavestring (*pp, p - *pp, &objfile->type_obstack);
2722 /* This means we have a visibility for a field coming. */
2726 fip->list->visibility = *(*pp)++;
2730 /* normal dbx-style format, no explicit visibility */
2731 fip->list->visibility = VISIBILITY_PUBLIC;
2734 fip->list->field.type = read_type (pp, objfile);
2739 /* Possible future hook for nested types. */
2742 fip->list->field.bitpos = (long) -2; /* nested type */
2752 /* Static class member. */
2753 SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp));
2757 else if (**pp != ',')
2759 /* Bad structure-type format. */
2760 stabs_general_complaint ("bad structure-type format");
2764 (*pp)++; /* Skip the comma. */
2768 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits);
2771 stabs_general_complaint ("bad structure-type format");
2774 FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits);
2777 stabs_general_complaint ("bad structure-type format");
2782 if (FIELD_BITPOS (fip->list->field) == 0
2783 && FIELD_BITSIZE (fip->list->field) == 0)
2785 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2786 it is a field which has been optimized out. The correct stab for
2787 this case is to use VISIBILITY_IGNORE, but that is a recent
2788 invention. (2) It is a 0-size array. For example
2789 union { int num; char str[0]; } foo. Printing "<no value>" for
2790 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2791 will continue to work, and a 0-size array as a whole doesn't
2792 have any contents to print.
2794 I suspect this probably could also happen with gcc -gstabs (not
2795 -gstabs+) for static fields, and perhaps other C++ extensions.
2796 Hopefully few people use -gstabs with gdb, since it is intended
2797 for dbx compatibility. */
2799 /* Ignore this field. */
2800 fip->list->visibility = VISIBILITY_IGNORE;
2804 /* Detect an unpacked field and mark it as such.
2805 dbx gives a bit size for all fields.
2806 Note that forward refs cannot be packed,
2807 and treat enums as if they had the width of ints. */
2809 struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field));
2811 if (TYPE_CODE (field_type) != TYPE_CODE_INT
2812 && TYPE_CODE (field_type) != TYPE_CODE_RANGE
2813 && TYPE_CODE (field_type) != TYPE_CODE_BOOL
2814 && TYPE_CODE (field_type) != TYPE_CODE_ENUM)
2816 FIELD_BITSIZE (fip->list->field) = 0;
2818 if ((FIELD_BITSIZE (fip->list->field)
2819 == TARGET_CHAR_BIT * TYPE_LENGTH (field_type)
2820 || (TYPE_CODE (field_type) == TYPE_CODE_ENUM
2821 && FIELD_BITSIZE (fip->list->field) == TARGET_INT_BIT)
2824 FIELD_BITPOS (fip->list->field) % 8 == 0)
2826 FIELD_BITSIZE (fip->list->field) = 0;
2832 /* Read struct or class data fields. They have the form:
2834 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2836 At the end, we see a semicolon instead of a field.
2838 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2841 The optional VISIBILITY is one of:
2843 '/0' (VISIBILITY_PRIVATE)
2844 '/1' (VISIBILITY_PROTECTED)
2845 '/2' (VISIBILITY_PUBLIC)
2846 '/9' (VISIBILITY_IGNORE)
2848 or nothing, for C style fields with public visibility.
2850 Returns 1 for success, 0 for failure. */
2853 read_struct_fields (struct field_info *fip, char **pp, struct type *type,
2854 struct objfile *objfile)
2857 struct nextfield *new;
2859 /* We better set p right now, in case there are no fields at all... */
2863 /* Read each data member type until we find the terminating ';' at the end of
2864 the data member list, or break for some other reason such as finding the
2865 start of the member function list. */
2866 /* Stab string for structure/union does not end with two ';' in
2867 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
2869 while (**pp != ';' && **pp != '\0')
2871 STABS_CONTINUE (pp, objfile);
2872 /* Get space to record the next field's data. */
2873 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
2874 make_cleanup (xfree, new);
2875 memset (new, 0, sizeof (struct nextfield));
2876 new->next = fip->list;
2879 /* Get the field name. */
2882 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2883 unless the CPLUS_MARKER is followed by an underscore, in
2884 which case it is just the name of an anonymous type, which we
2885 should handle like any other type name. */
2887 if (is_cplus_marker (p[0]) && p[1] != '_')
2889 if (!read_cpp_abbrev (fip, pp, type, objfile))
2894 /* Look for the ':' that separates the field name from the field
2895 values. Data members are delimited by a single ':', while member
2896 functions are delimited by a pair of ':'s. When we hit the member
2897 functions (if any), terminate scan loop and return. */
2899 while (*p != ':' && *p != '\0')
2906 /* Check to see if we have hit the member functions yet. */
2911 read_one_struct_field (fip, pp, p, type, objfile);
2913 if (p[0] == ':' && p[1] == ':')
2915 /* (the deleted) chill the list of fields: the last entry (at
2916 the head) is a partially constructed entry which we now
2918 fip->list = fip->list->next;
2923 /* The stabs for C++ derived classes contain baseclass information which
2924 is marked by a '!' character after the total size. This function is
2925 called when we encounter the baseclass marker, and slurps up all the
2926 baseclass information.
2928 Immediately following the '!' marker is the number of base classes that
2929 the class is derived from, followed by information for each base class.
2930 For each base class, there are two visibility specifiers, a bit offset
2931 to the base class information within the derived class, a reference to
2932 the type for the base class, and a terminating semicolon.
2934 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2936 Baseclass information marker __________________|| | | | | | |
2937 Number of baseclasses __________________________| | | | | | |
2938 Visibility specifiers (2) ________________________| | | | | |
2939 Offset in bits from start of class _________________| | | | |
2940 Type number for base class ___________________________| | | |
2941 Visibility specifiers (2) _______________________________| | |
2942 Offset in bits from start of class ________________________| |
2943 Type number of base class ____________________________________|
2945 Return 1 for success, 0 for (error-type-inducing) failure. */
2951 read_baseclasses (struct field_info *fip, char **pp, struct type *type,
2952 struct objfile *objfile)
2955 struct nextfield *new;
2963 /* Skip the '!' baseclass information marker. */
2967 ALLOCATE_CPLUS_STRUCT_TYPE (type);
2970 TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits);
2976 /* Some stupid compilers have trouble with the following, so break
2977 it up into simpler expressions. */
2978 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
2979 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
2982 int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
2985 pointer = (char *) TYPE_ALLOC (type, num_bytes);
2986 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
2990 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
2992 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
2994 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
2995 make_cleanup (xfree, new);
2996 memset (new, 0, sizeof (struct nextfield));
2997 new->next = fip->list;
2999 FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */
3001 STABS_CONTINUE (pp, objfile);
3005 /* Nothing to do. */
3008 SET_TYPE_FIELD_VIRTUAL (type, i);
3011 /* Unknown character. Complain and treat it as non-virtual. */
3013 complaint (&symfile_complaints,
3014 "Unknown virtual character `%c' for baseclass", **pp);
3019 new->visibility = *(*pp)++;
3020 switch (new->visibility)
3022 case VISIBILITY_PRIVATE:
3023 case VISIBILITY_PROTECTED:
3024 case VISIBILITY_PUBLIC:
3027 /* Bad visibility format. Complain and treat it as
3030 complaint (&symfile_complaints,
3031 "Unknown visibility `%c' for baseclass",
3033 new->visibility = VISIBILITY_PUBLIC;
3040 /* The remaining value is the bit offset of the portion of the object
3041 corresponding to this baseclass. Always zero in the absence of
3042 multiple inheritance. */
3044 FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits);
3049 /* The last piece of baseclass information is the type of the
3050 base class. Read it, and remember it's type name as this
3053 new->field.type = read_type (pp, objfile);
3054 new->field.name = type_name_no_tag (new->field.type);
3056 /* skip trailing ';' and bump count of number of fields seen */
3065 /* The tail end of stabs for C++ classes that contain a virtual function
3066 pointer contains a tilde, a %, and a type number.
3067 The type number refers to the base class (possibly this class itself) which
3068 contains the vtable pointer for the current class.
3070 This function is called when we have parsed all the method declarations,
3071 so we can look for the vptr base class info. */
3074 read_tilde_fields (struct field_info *fip, char **pp, struct type *type,
3075 struct objfile *objfile)
3079 STABS_CONTINUE (pp, objfile);
3081 /* If we are positioned at a ';', then skip it. */
3091 if (**pp == '=' || **pp == '+' || **pp == '-')
3093 /* Obsolete flags that used to indicate the presence
3094 of constructors and/or destructors. */
3098 /* Read either a '%' or the final ';'. */
3099 if (*(*pp)++ == '%')
3101 /* The next number is the type number of the base class
3102 (possibly our own class) which supplies the vtable for
3103 this class. Parse it out, and search that class to find
3104 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3105 and TYPE_VPTR_FIELDNO. */
3110 t = read_type (pp, objfile);
3112 while (*p != '\0' && *p != ';')
3118 /* Premature end of symbol. */
3122 TYPE_VPTR_BASETYPE (type) = t;
3123 if (type == t) /* Our own class provides vtbl ptr */
3125 for (i = TYPE_NFIELDS (t) - 1;
3126 i >= TYPE_N_BASECLASSES (t);
3129 char *name = TYPE_FIELD_NAME (t, i);
3130 if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2)
3131 && is_cplus_marker (name[sizeof (vptr_name) - 2]))
3133 TYPE_VPTR_FIELDNO (type) = i;
3137 /* Virtual function table field not found. */
3138 complaint (&symfile_complaints,
3139 "virtual function table pointer not found when defining class `%s'",
3145 TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
3156 attach_fn_fields_to_type (struct field_info *fip, struct type *type)
3160 for (n = TYPE_NFN_FIELDS (type);
3161 fip->fnlist != NULL;
3162 fip->fnlist = fip->fnlist->next)
3164 --n; /* Circumvent Sun3 compiler bug */
3165 TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist;
3170 /* Create the vector of fields, and record how big it is.
3171 We need this info to record proper virtual function table information
3172 for this class's virtual functions. */
3175 attach_fields_to_type (struct field_info *fip, struct type *type,
3176 struct objfile *objfile)
3179 int non_public_fields = 0;
3180 struct nextfield *scan;
3182 /* Count up the number of fields that we have, as well as taking note of
3183 whether or not there are any non-public fields, which requires us to
3184 allocate and build the private_field_bits and protected_field_bits
3187 for (scan = fip->list; scan != NULL; scan = scan->next)
3190 if (scan->visibility != VISIBILITY_PUBLIC)
3192 non_public_fields++;
3196 /* Now we know how many fields there are, and whether or not there are any
3197 non-public fields. Record the field count, allocate space for the
3198 array of fields, and create blank visibility bitfields if necessary. */
3200 TYPE_NFIELDS (type) = nfields;
3201 TYPE_FIELDS (type) = (struct field *)
3202 TYPE_ALLOC (type, sizeof (struct field) * nfields);
3203 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
3205 if (non_public_fields)
3207 ALLOCATE_CPLUS_STRUCT_TYPE (type);
3209 TYPE_FIELD_PRIVATE_BITS (type) =
3210 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
3211 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
3213 TYPE_FIELD_PROTECTED_BITS (type) =
3214 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
3215 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
3217 TYPE_FIELD_IGNORE_BITS (type) =
3218 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
3219 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
3222 /* Copy the saved-up fields into the field vector. Start from the head
3223 of the list, adding to the tail of the field array, so that they end
3224 up in the same order in the array in which they were added to the list. */
3226 while (nfields-- > 0)
3228 TYPE_FIELD (type, nfields) = fip->list->field;
3229 switch (fip->list->visibility)
3231 case VISIBILITY_PRIVATE:
3232 SET_TYPE_FIELD_PRIVATE (type, nfields);
3235 case VISIBILITY_PROTECTED:
3236 SET_TYPE_FIELD_PROTECTED (type, nfields);
3239 case VISIBILITY_IGNORE:
3240 SET_TYPE_FIELD_IGNORE (type, nfields);
3243 case VISIBILITY_PUBLIC:
3247 /* Unknown visibility. Complain and treat it as public. */
3249 complaint (&symfile_complaints, "Unknown visibility `%c' for field",
3250 fip->list->visibility);
3254 fip->list = fip->list->next;
3260 /* Complain that the compiler has emitted more than one definition for the
3261 structure type TYPE. */
3263 complain_about_struct_wipeout (struct type *type)
3268 if (TYPE_TAG_NAME (type))
3270 name = TYPE_TAG_NAME (type);
3271 switch (TYPE_CODE (type))
3273 case TYPE_CODE_STRUCT: kind = "struct "; break;
3274 case TYPE_CODE_UNION: kind = "union "; break;
3275 case TYPE_CODE_ENUM: kind = "enum "; break;
3279 else if (TYPE_NAME (type))
3281 name = TYPE_NAME (type);
3290 complaint (&symfile_complaints,
3291 "struct/union type gets multiply defined: %s%s", kind, name);
3295 /* Read the description of a structure (or union type) and return an object
3296 describing the type.
3298 PP points to a character pointer that points to the next unconsumed token
3299 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
3300 *PP will point to "4a:1,0,32;;".
3302 TYPE points to an incomplete type that needs to be filled in.
3304 OBJFILE points to the current objfile from which the stabs information is
3305 being read. (Note that it is redundant in that TYPE also contains a pointer
3306 to this same objfile, so it might be a good idea to eliminate it. FIXME).
3309 static struct type *
3310 read_struct_type (char **pp, struct type *type, enum type_code type_code,
3311 struct objfile *objfile)
3313 struct cleanup *back_to;
3314 struct field_info fi;
3319 /* When describing struct/union/class types in stabs, G++ always drops
3320 all qualifications from the name. So if you've got:
3321 struct A { ... struct B { ... }; ... };
3322 then G++ will emit stabs for `struct A::B' that call it simply
3323 `struct B'. Obviously, if you've got a real top-level definition for
3324 `struct B', or other nested definitions, this is going to cause
3327 Obviously, GDB can't fix this by itself, but it can at least avoid
3328 scribbling on existing structure type objects when new definitions
3330 if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF
3331 || TYPE_STUB (type)))
3333 complain_about_struct_wipeout (type);
3335 /* It's probably best to return the type unchanged. */
3339 back_to = make_cleanup (null_cleanup, 0);
3341 INIT_CPLUS_SPECIFIC (type);
3342 TYPE_CODE (type) = type_code;
3343 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
3345 /* First comes the total size in bytes. */
3349 TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits);
3351 return error_type (pp, objfile);
3354 /* Now read the baseclasses, if any, read the regular C struct or C++
3355 class member fields, attach the fields to the type, read the C++
3356 member functions, attach them to the type, and then read any tilde
3357 field (baseclass specifier for the class holding the main vtable). */
3359 if (!read_baseclasses (&fi, pp, type, objfile)
3360 || !read_struct_fields (&fi, pp, type, objfile)
3361 || !attach_fields_to_type (&fi, type, objfile)
3362 || !read_member_functions (&fi, pp, type, objfile)
3363 || !attach_fn_fields_to_type (&fi, type)
3364 || !read_tilde_fields (&fi, pp, type, objfile))
3366 type = error_type (pp, objfile);
3369 do_cleanups (back_to);
3373 /* Read a definition of an array type,
3374 and create and return a suitable type object.
3375 Also creates a range type which represents the bounds of that
3378 static struct type *
3379 read_array_type (char **pp, struct type *type,
3380 struct objfile *objfile)
3382 struct type *index_type, *element_type, *range_type;
3387 /* Format of an array type:
3388 "ar<index type>;lower;upper;<array_contents_type>".
3389 OS9000: "arlower,upper;<array_contents_type>".
3391 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
3392 for these, produce a type like float[][]. */
3395 index_type = read_type (pp, objfile);
3397 /* Improper format of array type decl. */
3398 return error_type (pp, objfile);
3402 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
3407 lower = read_huge_number (pp, ';', &nbits);
3410 return error_type (pp, objfile);
3412 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
3417 upper = read_huge_number (pp, ';', &nbits);
3419 return error_type (pp, objfile);
3421 element_type = read_type (pp, objfile);
3430 create_range_type ((struct type *) NULL, index_type, lower, upper);
3431 type = create_array_type (type, element_type, range_type);
3437 /* Read a definition of an enumeration type,
3438 and create and return a suitable type object.
3439 Also defines the symbols that represent the values of the type. */
3441 static struct type *
3442 read_enum_type (char **pp, struct type *type,
3443 struct objfile *objfile)
3450 struct pending **symlist;
3451 struct pending *osyms, *syms;
3454 int unsigned_enum = 1;
3457 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3458 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3459 to do? For now, force all enum values to file scope. */
3460 if (within_function)
3461 symlist = &local_symbols;
3464 symlist = &file_symbols;
3466 o_nsyms = osyms ? osyms->nsyms : 0;
3468 /* The aix4 compiler emits an extra field before the enum members;
3469 my guess is it's a type of some sort. Just ignore it. */
3472 /* Skip over the type. */
3476 /* Skip over the colon. */
3480 /* Read the value-names and their values.
3481 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3482 A semicolon or comma instead of a NAME means the end. */
3483 while (**pp && **pp != ';' && **pp != ',')
3485 STABS_CONTINUE (pp, objfile);
3489 name = obsavestring (*pp, p - *pp, &objfile->symbol_obstack);
3491 n = read_huge_number (pp, ',', &nbits);
3493 return error_type (pp, objfile);
3495 sym = (struct symbol *)
3496 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
3497 memset (sym, 0, sizeof (struct symbol));
3498 DEPRECATED_SYMBOL_NAME (sym) = name;
3499 SYMBOL_LANGUAGE (sym) = current_subfile->language;
3500 SYMBOL_CLASS (sym) = LOC_CONST;
3501 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
3502 SYMBOL_VALUE (sym) = n;
3505 add_symbol_to_list (sym, symlist);
3510 (*pp)++; /* Skip the semicolon. */
3512 /* Now fill in the fields of the type-structure. */
3514 TYPE_LENGTH (type) = TARGET_INT_BIT / HOST_CHAR_BIT;
3515 TYPE_CODE (type) = TYPE_CODE_ENUM;
3516 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
3518 TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
3519 TYPE_NFIELDS (type) = nsyms;
3520 TYPE_FIELDS (type) = (struct field *)
3521 TYPE_ALLOC (type, sizeof (struct field) * nsyms);
3522 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms);
3524 /* Find the symbols for the values and put them into the type.
3525 The symbols can be found in the symlist that we put them on
3526 to cause them to be defined. osyms contains the old value
3527 of that symlist; everything up to there was defined by us. */
3528 /* Note that we preserve the order of the enum constants, so
3529 that in something like "enum {FOO, LAST_THING=FOO}" we print
3530 FOO, not LAST_THING. */
3532 for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next)
3534 int last = syms == osyms ? o_nsyms : 0;
3535 int j = syms->nsyms;
3536 for (; --j >= last; --n)
3538 struct symbol *xsym = syms->symbol[j];
3539 SYMBOL_TYPE (xsym) = type;
3540 TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym);
3541 TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
3542 TYPE_FIELD_BITSIZE (type, n) = 0;
3551 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3552 typedefs in every file (for int, long, etc):
3554 type = b <signed> <width> <format type>; <offset>; <nbits>
3556 optional format type = c or b for char or boolean.
3557 offset = offset from high order bit to start bit of type.
3558 width is # bytes in object of this type, nbits is # bits in type.
3560 The width/offset stuff appears to be for small objects stored in
3561 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3564 static struct type *
3565 read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile)
3570 enum type_code code = TYPE_CODE_INT;
3581 return error_type (pp, objfile);
3585 /* For some odd reason, all forms of char put a c here. This is strange
3586 because no other type has this honor. We can safely ignore this because
3587 we actually determine 'char'acterness by the number of bits specified in
3589 Boolean forms, e.g Fortran logical*X, put a b here. */
3593 else if (**pp == 'b')
3595 code = TYPE_CODE_BOOL;
3599 /* The first number appears to be the number of bytes occupied
3600 by this type, except that unsigned short is 4 instead of 2.
3601 Since this information is redundant with the third number,
3602 we will ignore it. */
3603 read_huge_number (pp, ';', &nbits);
3605 return error_type (pp, objfile);
3607 /* The second number is always 0, so ignore it too. */
3608 read_huge_number (pp, ';', &nbits);
3610 return error_type (pp, objfile);
3612 /* The third number is the number of bits for this type. */
3613 type_bits = read_huge_number (pp, 0, &nbits);
3615 return error_type (pp, objfile);
3616 /* The type *should* end with a semicolon. If it are embedded
3617 in a larger type the semicolon may be the only way to know where
3618 the type ends. If this type is at the end of the stabstring we
3619 can deal with the omitted semicolon (but we don't have to like
3620 it). Don't bother to complain(), Sun's compiler omits the semicolon
3626 return init_type (TYPE_CODE_VOID, 1,
3627 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
3630 return init_type (code,
3631 type_bits / TARGET_CHAR_BIT,
3632 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
3636 static struct type *
3637 read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile)
3642 struct type *rettype;
3644 /* The first number has more details about the type, for example
3646 details = read_huge_number (pp, ';', &nbits);
3648 return error_type (pp, objfile);
3650 /* The second number is the number of bytes occupied by this type */
3651 nbytes = read_huge_number (pp, ';', &nbits);
3653 return error_type (pp, objfile);
3655 if (details == NF_COMPLEX || details == NF_COMPLEX16
3656 || details == NF_COMPLEX32)
3658 rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile);
3659 TYPE_TARGET_TYPE (rettype)
3660 = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile);
3664 return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile);
3667 /* Read a number from the string pointed to by *PP.
3668 The value of *PP is advanced over the number.
3669 If END is nonzero, the character that ends the
3670 number must match END, or an error happens;
3671 and that character is skipped if it does match.
3672 If END is zero, *PP is left pointing to that character.
3674 If the number fits in a long, set *BITS to 0 and return the value.
3675 If not, set *BITS to be the number of bits in the number and return 0.
3677 If encounter garbage, set *BITS to -1 and return 0. */
3680 read_huge_number (char **pp, int end, int *bits)
3697 /* Leading zero means octal. GCC uses this to output values larger
3698 than an int (because that would be hard in decimal). */
3705 upper_limit = LONG_MAX / radix;
3707 while ((c = *p++) >= '0' && c < ('0' + radix))
3709 if (n <= upper_limit)
3712 n += c - '0'; /* FIXME this overflows anyway */
3717 /* This depends on large values being output in octal, which is
3724 /* Ignore leading zeroes. */
3728 else if (c == '2' || c == '3')
3754 /* Large decimal constants are an error (because it is hard to
3755 count how many bits are in them). */
3761 /* -0x7f is the same as 0x80. So deal with it by adding one to
3762 the number of bits. */
3774 /* It's *BITS which has the interesting information. */
3778 static struct type *
3779 read_range_type (char **pp, int typenums[2], struct objfile *objfile)
3781 char *orig_pp = *pp;
3786 struct type *result_type;
3787 struct type *index_type = NULL;
3789 /* First comes a type we are a subrange of.
3790 In C it is usually 0, 1 or the type being defined. */
3791 if (read_type_number (pp, rangenums) != 0)
3792 return error_type (pp, objfile);
3793 self_subrange = (rangenums[0] == typenums[0] &&
3794 rangenums[1] == typenums[1]);
3799 index_type = read_type (pp, objfile);
3802 /* A semicolon should now follow; skip it. */
3806 /* The remaining two operands are usually lower and upper bounds
3807 of the range. But in some special cases they mean something else. */
3808 n2 = read_huge_number (pp, ';', &n2bits);
3809 n3 = read_huge_number (pp, ';', &n3bits);
3811 if (n2bits == -1 || n3bits == -1)
3812 return error_type (pp, objfile);
3815 goto handle_true_range;
3817 /* If limits are huge, must be large integral type. */
3818 if (n2bits != 0 || n3bits != 0)
3820 char got_signed = 0;
3821 char got_unsigned = 0;
3822 /* Number of bits in the type. */
3825 /* Range from 0 to <large number> is an unsigned large integral type. */
3826 if ((n2bits == 0 && n2 == 0) && n3bits != 0)
3831 /* Range from <large number> to <large number>-1 is a large signed
3832 integral type. Take care of the case where <large number> doesn't
3833 fit in a long but <large number>-1 does. */
3834 else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1)
3835 || (n2bits != 0 && n3bits == 0
3836 && (n2bits == sizeof (long) * HOST_CHAR_BIT)
3843 if (got_signed || got_unsigned)
3845 return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT,
3846 got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL,
3850 return error_type (pp, objfile);
3853 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3854 if (self_subrange && n2 == 0 && n3 == 0)
3855 return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile);
3857 /* If n3 is zero and n2 is positive, we want a floating type, and n2
3858 is the width in bytes.
3860 Fortran programs appear to use this for complex types also. To
3861 distinguish between floats and complex, g77 (and others?) seem
3862 to use self-subranges for the complexes, and subranges of int for
3865 Also note that for complexes, g77 sets n2 to the size of one of
3866 the member floats, not the whole complex beast. My guess is that
3867 this was to work well with pre-COMPLEX versions of gdb. */
3869 if (n3 == 0 && n2 > 0)
3871 struct type *float_type
3872 = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile);
3876 struct type *complex_type =
3877 init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile);
3878 TYPE_TARGET_TYPE (complex_type) = float_type;
3879 return complex_type;
3885 /* If the upper bound is -1, it must really be an unsigned int. */
3887 else if (n2 == 0 && n3 == -1)
3889 /* It is unsigned int or unsigned long. */
3890 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3891 compatibility hack. */
3892 return init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
3893 TYPE_FLAG_UNSIGNED, NULL, objfile);
3896 /* Special case: char is defined (Who knows why) as a subrange of
3897 itself with range 0-127. */
3898 else if (self_subrange && n2 == 0 && n3 == 127)
3899 return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile);
3901 /* We used to do this only for subrange of self or subrange of int. */
3904 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3905 "unsigned long", and we already checked for that,
3906 so don't need to test for it here. */
3909 /* n3 actually gives the size. */
3910 return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED,
3913 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
3914 unsigned n-byte integer. But do require n to be a power of
3915 two; we don't want 3- and 5-byte integers flying around. */
3921 for (bytes = 0; (bits & 0xff) == 0xff; bytes++)
3924 && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */
3925 return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL,
3929 /* I think this is for Convex "long long". Since I don't know whether
3930 Convex sets self_subrange, I also accept that particular size regardless
3931 of self_subrange. */
3932 else if (n3 == 0 && n2 < 0
3934 || n2 == -TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT))
3935 return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile);
3936 else if (n2 == -n3 - 1)
3939 return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile);
3941 return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile);
3942 if (n3 == 0x7fffffff)
3943 return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile);
3946 /* We have a real range type on our hands. Allocate space and
3947 return a real pointer. */
3951 index_type = builtin_type_int;
3953 index_type = *dbx_lookup_type (rangenums);
3954 if (index_type == NULL)
3956 /* Does this actually ever happen? Is that why we are worrying
3957 about dealing with it rather than just calling error_type? */
3959 static struct type *range_type_index;
3961 complaint (&symfile_complaints,
3962 "base type %d of range type is not defined", rangenums[1]);
3963 if (range_type_index == NULL)
3965 init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
3966 0, "range type index type", NULL);
3967 index_type = range_type_index;
3970 result_type = create_range_type ((struct type *) NULL, index_type, n2, n3);
3971 return (result_type);
3974 /* Read in an argument list. This is a list of types, separated by commas
3975 and terminated with END. Return the list of types read in, or (struct type
3976 **)-1 if there is an error. */
3978 static struct field *
3979 read_args (char **pp, int end, struct objfile *objfile, int *nargsp,
3982 /* FIXME! Remove this arbitrary limit! */
3983 struct type *types[1024]; /* allow for fns of 1023 parameters */
3990 /* Invalid argument list: no ','. */
3991 return (struct field *) -1;
3993 STABS_CONTINUE (pp, objfile);
3994 types[n++] = read_type (pp, objfile);
3996 (*pp)++; /* get past `end' (the ':' character) */
3998 if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID)
4006 rval = (struct field *) xmalloc (n * sizeof (struct field));
4007 memset (rval, 0, n * sizeof (struct field));
4008 for (i = 0; i < n; i++)
4009 rval[i].type = types[i];
4014 /* Common block handling. */
4016 /* List of symbols declared since the last BCOMM. This list is a tail
4017 of local_symbols. When ECOMM is seen, the symbols on the list
4018 are noted so their proper addresses can be filled in later,
4019 using the common block base address gotten from the assembler
4022 static struct pending *common_block;
4023 static int common_block_i;
4025 /* Name of the current common block. We get it from the BCOMM instead of the
4026 ECOMM to match IBM documentation (even though IBM puts the name both places
4027 like everyone else). */
4028 static char *common_block_name;
4030 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
4031 to remain after this function returns. */
4034 common_block_start (char *name, struct objfile *objfile)
4036 if (common_block_name != NULL)
4038 complaint (&symfile_complaints,
4039 "Invalid symbol data: common block within common block");
4041 common_block = local_symbols;
4042 common_block_i = local_symbols ? local_symbols->nsyms : 0;
4043 common_block_name = obsavestring (name, strlen (name),
4044 &objfile->symbol_obstack);
4047 /* Process a N_ECOMM symbol. */
4050 common_block_end (struct objfile *objfile)
4052 /* Symbols declared since the BCOMM are to have the common block
4053 start address added in when we know it. common_block and
4054 common_block_i point to the first symbol after the BCOMM in
4055 the local_symbols list; copy the list and hang it off the
4056 symbol for the common block name for later fixup. */
4059 struct pending *new = 0;
4060 struct pending *next;
4063 if (common_block_name == NULL)
4065 complaint (&symfile_complaints, "ECOMM symbol unmatched by BCOMM");
4069 sym = (struct symbol *)
4070 obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
4071 memset (sym, 0, sizeof (struct symbol));
4072 /* Note: common_block_name already saved on symbol_obstack */
4073 DEPRECATED_SYMBOL_NAME (sym) = common_block_name;
4074 SYMBOL_CLASS (sym) = LOC_BLOCK;
4076 /* Now we copy all the symbols which have been defined since the BCOMM. */
4078 /* Copy all the struct pendings before common_block. */
4079 for (next = local_symbols;
4080 next != NULL && next != common_block;
4083 for (j = 0; j < next->nsyms; j++)
4084 add_symbol_to_list (next->symbol[j], &new);
4087 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
4088 NULL, it means copy all the local symbols (which we already did
4091 if (common_block != NULL)
4092 for (j = common_block_i; j < common_block->nsyms; j++)
4093 add_symbol_to_list (common_block->symbol[j], &new);
4095 SYMBOL_TYPE (sym) = (struct type *) new;
4097 /* Should we be putting local_symbols back to what it was?
4100 i = hashname (DEPRECATED_SYMBOL_NAME (sym));
4101 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
4102 global_sym_chain[i] = sym;
4103 common_block_name = NULL;
4106 /* Add a common block's start address to the offset of each symbol
4107 declared to be in it (by being between a BCOMM/ECOMM pair that uses
4108 the common block name). */
4111 fix_common_block (struct symbol *sym, int valu)
4113 struct pending *next = (struct pending *) SYMBOL_TYPE (sym);
4114 for (; next; next = next->next)
4117 for (j = next->nsyms - 1; j >= 0; j--)
4118 SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu;
4124 /* What about types defined as forward references inside of a small lexical
4126 /* Add a type to the list of undefined types to be checked through
4127 once this file has been read in. */
4130 add_undefined_type (struct type *type)
4132 if (undef_types_length == undef_types_allocated)
4134 undef_types_allocated *= 2;
4135 undef_types = (struct type **)
4136 xrealloc ((char *) undef_types,
4137 undef_types_allocated * sizeof (struct type *));
4139 undef_types[undef_types_length++] = type;
4142 /* Go through each undefined type, see if it's still undefined, and fix it
4143 up if possible. We have two kinds of undefined types:
4145 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
4146 Fix: update array length using the element bounds
4147 and the target type's length.
4148 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
4149 yet defined at the time a pointer to it was made.
4150 Fix: Do a full lookup on the struct/union tag. */
4152 cleanup_undefined_types (void)
4156 for (type = undef_types; type < undef_types + undef_types_length; type++)
4158 switch (TYPE_CODE (*type))
4161 case TYPE_CODE_STRUCT:
4162 case TYPE_CODE_UNION:
4163 case TYPE_CODE_ENUM:
4165 /* Check if it has been defined since. Need to do this here
4166 as well as in check_typedef to deal with the (legitimate in
4167 C though not C++) case of several types with the same name
4168 in different source files. */
4169 if (TYPE_STUB (*type))
4171 struct pending *ppt;
4173 /* Name of the type, without "struct" or "union" */
4174 char *typename = TYPE_TAG_NAME (*type);
4176 if (typename == NULL)
4178 complaint (&symfile_complaints, "need a type name");
4181 for (ppt = file_symbols; ppt; ppt = ppt->next)
4183 for (i = 0; i < ppt->nsyms; i++)
4185 struct symbol *sym = ppt->symbol[i];
4187 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
4188 && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
4189 && (TYPE_CODE (SYMBOL_TYPE (sym)) ==
4191 && strcmp (DEPRECATED_SYMBOL_NAME (sym), typename) == 0)
4192 replace_type (*type, SYMBOL_TYPE (sym));
4201 complaint (&symfile_complaints,
4202 "GDB internal error. cleanup_undefined_types with bad type %d.",
4209 undef_types_length = 0;
4212 /* Scan through all of the global symbols defined in the object file,
4213 assigning values to the debugging symbols that need to be assigned
4214 to. Get these symbols from the minimal symbol table. */
4217 scan_file_globals (struct objfile *objfile)
4220 struct minimal_symbol *msymbol;
4221 struct symbol *sym, *prev;
4222 struct objfile *resolve_objfile;
4224 /* SVR4 based linkers copy referenced global symbols from shared
4225 libraries to the main executable.
4226 If we are scanning the symbols for a shared library, try to resolve
4227 them from the minimal symbols of the main executable first. */
4229 if (symfile_objfile && objfile != symfile_objfile)
4230 resolve_objfile = symfile_objfile;
4232 resolve_objfile = objfile;
4236 /* Avoid expensive loop through all minimal symbols if there are
4237 no unresolved symbols. */
4238 for (hash = 0; hash < HASHSIZE; hash++)
4240 if (global_sym_chain[hash])
4243 if (hash >= HASHSIZE)
4246 for (msymbol = resolve_objfile->msymbols;
4247 msymbol && DEPRECATED_SYMBOL_NAME (msymbol) != NULL;
4252 /* Skip static symbols. */
4253 switch (MSYMBOL_TYPE (msymbol))
4265 /* Get the hash index and check all the symbols
4266 under that hash index. */
4268 hash = hashname (DEPRECATED_SYMBOL_NAME (msymbol));
4270 for (sym = global_sym_chain[hash]; sym;)
4272 if (DEPRECATED_SYMBOL_NAME (msymbol)[0] == DEPRECATED_SYMBOL_NAME (sym)[0] &&
4273 strcmp (DEPRECATED_SYMBOL_NAME (msymbol) + 1, DEPRECATED_SYMBOL_NAME (sym) + 1) == 0)
4275 /* Splice this symbol out of the hash chain and
4276 assign the value we have to it. */
4279 SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
4283 global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym);
4286 /* Check to see whether we need to fix up a common block. */
4287 /* Note: this code might be executed several times for
4288 the same symbol if there are multiple references. */
4291 if (SYMBOL_CLASS (sym) == LOC_BLOCK)
4293 fix_common_block (sym,
4294 SYMBOL_VALUE_ADDRESS (msymbol));
4298 SYMBOL_VALUE_ADDRESS (sym)
4299 = SYMBOL_VALUE_ADDRESS (msymbol);
4301 SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol);
4306 sym = SYMBOL_VALUE_CHAIN (prev);
4310 sym = global_sym_chain[hash];
4316 sym = SYMBOL_VALUE_CHAIN (sym);
4320 if (resolve_objfile == objfile)
4322 resolve_objfile = objfile;
4325 /* Change the storage class of any remaining unresolved globals to
4326 LOC_UNRESOLVED and remove them from the chain. */
4327 for (hash = 0; hash < HASHSIZE; hash++)
4329 sym = global_sym_chain[hash];
4333 sym = SYMBOL_VALUE_CHAIN (sym);
4335 /* Change the symbol address from the misleading chain value
4337 SYMBOL_VALUE_ADDRESS (prev) = 0;
4339 /* Complain about unresolved common block symbols. */
4340 if (SYMBOL_CLASS (prev) == LOC_STATIC)
4341 SYMBOL_CLASS (prev) = LOC_UNRESOLVED;
4343 complaint (&symfile_complaints,
4344 "%s: common block `%s' from global_sym_chain unresolved",
4345 objfile->name, DEPRECATED_SYMBOL_NAME (prev));
4348 memset (global_sym_chain, 0, sizeof (global_sym_chain));
4351 /* Initialize anything that needs initializing when starting to read
4352 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
4356 stabsread_init (void)
4360 /* Initialize anything that needs initializing when a completely new
4361 symbol file is specified (not just adding some symbols from another
4362 file, e.g. a shared library). */
4365 stabsread_new_init (void)
4367 /* Empty the hash table of global syms looking for values. */
4368 memset (global_sym_chain, 0, sizeof (global_sym_chain));
4371 /* Initialize anything that needs initializing at the same time as
4372 start_symtab() is called. */
4377 global_stabs = NULL; /* AIX COFF */
4378 /* Leave FILENUM of 0 free for builtin types and this file's types. */
4379 n_this_object_header_files = 1;
4380 type_vector_length = 0;
4381 type_vector = (struct type **) 0;
4383 /* FIXME: If common_block_name is not already NULL, we should complain(). */
4384 common_block_name = NULL;
4387 /* Call after end_symtab() */
4394 xfree (type_vector);
4397 type_vector_length = 0;
4398 previous_stab_code = 0;
4402 finish_global_stabs (struct objfile *objfile)
4406 patch_block_stabs (global_symbols, global_stabs, objfile);
4407 xfree (global_stabs);
4408 global_stabs = NULL;
4412 /* Find the end of the name, delimited by a ':', but don't match
4413 ObjC symbols which look like -[Foo bar::]:bla. */
4415 find_name_end (char *name)
4418 if (s[0] == '-' || *s == '+')
4420 /* Must be an ObjC method symbol. */
4423 error ("invalid symbol name \"%s\"", name);
4425 s = strchr (s, ']');
4428 error ("invalid symbol name \"%s\"", name);
4430 return strchr (s, ':');
4434 return strchr (s, ':');
4438 /* Initializer for this module */
4441 _initialize_stabsread (void)
4443 undef_types_allocated = 20;
4444 undef_types_length = 0;
4445 undef_types = (struct type **)
4446 xmalloc (undef_types_allocated * sizeof (struct type *));