1 /* Support routines for decoding "stabs" debugging information format.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
5 Free 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., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, 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 *, 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], int, 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 *, int[2]);
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 void stabsread_clear_cache (void);
162 static const char vptr_name[] = "_vptr$";
163 static const char vb_name[] = "_vb$";
165 /* Define this as 1 if a pcc declaration of a char or short argument
166 gives the correct address. Otherwise assume pcc gives the
167 address of the corresponding int, which is not the same on a
168 big-endian machine. */
170 #if !defined (BELIEVE_PCC_PROMOTION)
171 #define BELIEVE_PCC_PROMOTION 0
175 invalid_cpp_abbrev_complaint (const char *arg1)
177 complaint (&symfile_complaints, _("invalid C++ abbreviation `%s'"), arg1);
181 reg_value_complaint (int regnum, int num_regs, const char *sym)
183 complaint (&symfile_complaints,
184 _("register number %d too large (max %d) in symbol %s"),
185 regnum, num_regs - 1, sym);
189 stabs_general_complaint (const char *arg1)
191 complaint (&symfile_complaints, "%s", arg1);
194 /* Make a list of forward references which haven't been defined. */
196 static struct type **undef_types;
197 static int undef_types_allocated;
198 static int undef_types_length;
199 static struct symbol *current_symbol = NULL;
201 /* Make a list of nameless types that are undefined.
202 This happens when another type is referenced by its number
203 before this type is actually defined. For instance "t(0,1)=k(0,2)"
204 and type (0,2) is defined only later. */
211 static struct nat *noname_undefs;
212 static int noname_undefs_allocated;
213 static int noname_undefs_length;
215 /* Check for and handle cretinous stabs symbol name continuation! */
216 #define STABS_CONTINUE(pp,objfile) \
218 if (**(pp) == '\\' || (**(pp) == '?' && (*(pp))[1] == '\0')) \
219 *(pp) = next_symbol_text (objfile); \
223 /* Look up a dbx type-number pair. Return the address of the slot
224 where the type for that number-pair is stored.
225 The number-pair is in TYPENUMS.
227 This can be used for finding the type associated with that pair
228 or for associating a new type with the pair. */
230 static struct type **
231 dbx_lookup_type (int typenums[2])
233 int filenum = typenums[0];
234 int index = typenums[1];
237 struct header_file *f;
240 if (filenum == -1) /* -1,-1 is for temporary types. */
243 if (filenum < 0 || filenum >= n_this_object_header_files)
245 complaint (&symfile_complaints,
246 _("Invalid symbol data: type number (%d,%d) out of range at symtab pos %d."),
247 filenum, index, symnum);
255 /* Caller wants address of address of type. We think
256 that negative (rs6k builtin) types will never appear as
257 "lvalues", (nor should they), so we stuff the real type
258 pointer into a temp, and return its address. If referenced,
259 this will do the right thing. */
260 static struct type *temp_type;
262 temp_type = rs6000_builtin_type (index);
266 /* Type is defined outside of header files.
267 Find it in this object file's type vector. */
268 if (index >= type_vector_length)
270 old_len = type_vector_length;
273 type_vector_length = INITIAL_TYPE_VECTOR_LENGTH;
274 type_vector = (struct type **)
275 xmalloc (type_vector_length * sizeof (struct type *));
277 while (index >= type_vector_length)
279 type_vector_length *= 2;
281 type_vector = (struct type **)
282 xrealloc ((char *) type_vector,
283 (type_vector_length * sizeof (struct type *)));
284 memset (&type_vector[old_len], 0,
285 (type_vector_length - old_len) * sizeof (struct type *));
287 return (&type_vector[index]);
291 real_filenum = this_object_header_files[filenum];
293 if (real_filenum >= N_HEADER_FILES (current_objfile))
295 struct type *temp_type;
296 struct type **temp_type_p;
298 warning (_("GDB internal error: bad real_filenum"));
301 temp_type = init_type (TYPE_CODE_ERROR, 0, 0, NULL, NULL);
302 temp_type_p = (struct type **) xmalloc (sizeof (struct type *));
303 *temp_type_p = temp_type;
307 f = HEADER_FILES (current_objfile) + real_filenum;
309 f_orig_length = f->length;
310 if (index >= f_orig_length)
312 while (index >= f->length)
316 f->vector = (struct type **)
317 xrealloc ((char *) f->vector, f->length * sizeof (struct type *));
318 memset (&f->vector[f_orig_length], 0,
319 (f->length - f_orig_length) * sizeof (struct type *));
321 return (&f->vector[index]);
325 /* Make sure there is a type allocated for type numbers TYPENUMS
326 and return the type object.
327 This can create an empty (zeroed) type object.
328 TYPENUMS may be (-1, -1) to return a new type object that is not
329 put into the type vector, and so may not be referred to by number. */
332 dbx_alloc_type (int typenums[2], struct objfile *objfile)
334 struct type **type_addr;
336 if (typenums[0] == -1)
338 return (alloc_type (objfile));
341 type_addr = dbx_lookup_type (typenums);
343 /* If we are referring to a type not known at all yet,
344 allocate an empty type for it.
345 We will fill it in later if we find out how. */
348 *type_addr = alloc_type (objfile);
354 /* for all the stabs in a given stab vector, build appropriate types
355 and fix their symbols in given symbol vector. */
358 patch_block_stabs (struct pending *symbols, struct pending_stabs *stabs,
359 struct objfile *objfile)
369 /* for all the stab entries, find their corresponding symbols and
370 patch their types! */
372 for (ii = 0; ii < stabs->count; ++ii)
374 name = stabs->stab[ii];
375 pp = (char *) strchr (name, ':');
379 pp = (char *) strchr (pp, ':');
381 sym = find_symbol_in_list (symbols, name, pp - name);
384 /* FIXME-maybe: it would be nice if we noticed whether
385 the variable was defined *anywhere*, not just whether
386 it is defined in this compilation unit. But neither
387 xlc or GCC seem to need such a definition, and until
388 we do psymtabs (so that the minimal symbols from all
389 compilation units are available now), I'm not sure
390 how to get the information. */
392 /* On xcoff, if a global is defined and never referenced,
393 ld will remove it from the executable. There is then
394 a N_GSYM stab for it, but no regular (C_EXT) symbol. */
395 sym = (struct symbol *)
396 obstack_alloc (&objfile->objfile_obstack,
397 sizeof (struct symbol));
399 memset (sym, 0, sizeof (struct symbol));
400 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
401 SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
402 DEPRECATED_SYMBOL_NAME (sym) =
403 obsavestring (name, pp - name, &objfile->objfile_obstack);
405 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
407 /* I don't think the linker does this with functions,
408 so as far as I know this is never executed.
409 But it doesn't hurt to check. */
411 lookup_function_type (read_type (&pp, objfile));
415 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
417 add_symbol_to_list (sym, &global_symbols);
422 if (*(pp - 1) == 'F' || *(pp - 1) == 'f')
425 lookup_function_type (read_type (&pp, objfile));
429 SYMBOL_TYPE (sym) = read_type (&pp, objfile);
437 /* Read a number by which a type is referred to in dbx data,
438 or perhaps read a pair (FILENUM, TYPENUM) in parentheses.
439 Just a single number N is equivalent to (0,N).
440 Return the two numbers by storing them in the vector TYPENUMS.
441 TYPENUMS will then be used as an argument to dbx_lookup_type.
443 Returns 0 for success, -1 for error. */
446 read_type_number (char **pp, int *typenums)
452 typenums[0] = read_huge_number (pp, ',', &nbits, 0);
455 typenums[1] = read_huge_number (pp, ')', &nbits, 0);
462 typenums[1] = read_huge_number (pp, 0, &nbits, 0);
470 #define VISIBILITY_PRIVATE '0' /* Stabs character for private field */
471 #define VISIBILITY_PROTECTED '1' /* Stabs character for protected fld */
472 #define VISIBILITY_PUBLIC '2' /* Stabs character for public field */
473 #define VISIBILITY_IGNORE '9' /* Optimized out or zero length */
475 /* Structure for storing pointers to reference definitions for fast lookup
476 during "process_later". */
485 #define MAX_CHUNK_REFS 100
486 #define REF_CHUNK_SIZE (MAX_CHUNK_REFS * sizeof (struct ref_map))
487 #define REF_MAP_SIZE(ref_chunk) ((ref_chunk) * REF_CHUNK_SIZE)
489 static struct ref_map *ref_map;
491 /* Ptr to free cell in chunk's linked list. */
492 static int ref_count = 0;
494 /* Number of chunks malloced. */
495 static int ref_chunk = 0;
497 /* This file maintains a cache of stabs aliases found in the symbol
498 table. If the symbol table changes, this cache must be cleared
499 or we are left holding onto data in invalid obstacks. */
501 stabsread_clear_cache (void)
507 /* Create array of pointers mapping refids to symbols and stab strings.
508 Add pointers to reference definition symbols and/or their values as we
509 find them, using their reference numbers as our index.
510 These will be used later when we resolve references. */
512 ref_add (int refnum, struct symbol *sym, char *stabs, CORE_ADDR value)
516 if (refnum >= ref_count)
517 ref_count = refnum + 1;
518 if (ref_count > ref_chunk * MAX_CHUNK_REFS)
520 int new_slots = ref_count - ref_chunk * MAX_CHUNK_REFS;
521 int new_chunks = new_slots / MAX_CHUNK_REFS + 1;
522 ref_map = (struct ref_map *)
523 xrealloc (ref_map, REF_MAP_SIZE (ref_chunk + new_chunks));
524 memset (ref_map + ref_chunk * MAX_CHUNK_REFS, 0, new_chunks * REF_CHUNK_SIZE);
525 ref_chunk += new_chunks;
527 ref_map[refnum].stabs = stabs;
528 ref_map[refnum].sym = sym;
529 ref_map[refnum].value = value;
532 /* Return defined sym for the reference REFNUM. */
534 ref_search (int refnum)
536 if (refnum < 0 || refnum > ref_count)
538 return ref_map[refnum].sym;
541 /* Parse a reference id in STRING and return the resulting
542 reference number. Move STRING beyond the reference id. */
545 process_reference (char **string)
553 /* Advance beyond the initial '#'. */
556 /* Read number as reference id. */
557 while (*p && isdigit (*p))
559 refnum = refnum * 10 + *p - '0';
566 /* If STRING defines a reference, store away a pointer to the reference
567 definition for later use. Return the reference number. */
570 symbol_reference_defined (char **string)
575 refnum = process_reference (&p);
577 /* Defining symbols end in '=' */
580 /* Symbol is being defined here. */
586 /* Must be a reference. Either the symbol has already been defined,
587 or this is a forward reference to it. */
594 define_symbol (CORE_ADDR valu, char *string, int desc, int type,
595 struct objfile *objfile)
598 char *p = (char *) find_name_end (string);
603 /* We would like to eliminate nameless symbols, but keep their types.
604 E.g. stab entry ":t10=*2" should produce a type 10, which is a pointer
605 to type 2, but, should not create a symbol to address that type. Since
606 the symbol will be nameless, there is no way any user can refer to it. */
610 /* Ignore syms with empty names. */
614 /* Ignore old-style symbols from cc -go */
624 /* If a nameless stab entry, all we need is the type, not the symbol.
625 e.g. ":t10=*2" or a nameless enum like " :T16=ered:0,green:1,blue:2,;" */
626 nameless = (p == string || ((string[0] == ' ') && (string[1] == ':')));
628 current_symbol = sym = (struct symbol *)
629 obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
630 memset (sym, 0, sizeof (struct symbol));
632 switch (type & N_TYPE)
635 SYMBOL_SECTION (sym) = SECT_OFF_TEXT (objfile);
638 SYMBOL_SECTION (sym) = SECT_OFF_DATA (objfile);
641 SYMBOL_SECTION (sym) = SECT_OFF_BSS (objfile);
645 if (processing_gcc_compilation)
647 /* GCC 2.x puts the line number in desc. SunOS apparently puts in the
648 number of bytes occupied by a type or object, which we ignore. */
649 SYMBOL_LINE (sym) = desc;
653 SYMBOL_LINE (sym) = 0; /* unknown */
656 if (is_cplus_marker (string[0]))
658 /* Special GNU C++ names. */
662 DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("this", strlen ("this"),
663 &objfile->objfile_obstack);
666 case 'v': /* $vtbl_ptr_type */
667 /* Was: DEPRECATED_SYMBOL_NAME (sym) = "vptr"; */
671 DEPRECATED_SYMBOL_NAME (sym) = obsavestring ("eh_throw", strlen ("eh_throw"),
672 &objfile->objfile_obstack);
676 /* This was an anonymous type that was never fixed up. */
679 #ifdef STATIC_TRANSFORM_NAME
681 /* SunPRO (3.0 at least) static variable encoding. */
686 complaint (&symfile_complaints, _("Unknown C++ symbol name `%s'"),
688 goto normal; /* Do *something* with it */
694 SYMBOL_LANGUAGE (sym) = current_subfile->language;
695 SYMBOL_SET_NAMES (sym, string, p - string, objfile);
699 /* Determine the type of name being defined. */
701 /* Getting GDB to correctly skip the symbol on an undefined symbol
702 descriptor and not ever dump core is a very dodgy proposition if
703 we do things this way. I say the acorn RISC machine can just
704 fix their compiler. */
705 /* The Acorn RISC machine's compiler can put out locals that don't
706 start with "234=" or "(3,4)=", so assume anything other than the
707 deftypes we know how to handle is a local. */
708 if (!strchr ("cfFGpPrStTvVXCR", *p))
710 if (isdigit (*p) || *p == '(' || *p == '-')
719 /* c is a special case, not followed by a type-number.
720 SYMBOL:c=iVALUE for an integer constant symbol.
721 SYMBOL:c=rVALUE for a floating constant symbol.
722 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
723 e.g. "b:c=e6,0" for "const b = blob1"
724 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
727 SYMBOL_CLASS (sym) = LOC_CONST;
728 SYMBOL_TYPE (sym) = error_type (&p, objfile);
729 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
730 add_symbol_to_list (sym, &file_symbols);
741 /* FIXME-if-picky-about-floating-accuracy: Should be using
742 target arithmetic to get the value. real.c in GCC
743 probably has the necessary code. */
745 /* FIXME: lookup_fundamental_type is a hack. We should be
746 creating a type especially for the type of float constants.
747 Problem is, what type should it be?
749 Also, what should the name of this type be? Should we
750 be using 'S' constants (see stabs.texinfo) instead? */
752 SYMBOL_TYPE (sym) = lookup_fundamental_type (objfile,
755 obstack_alloc (&objfile->objfile_obstack,
756 TYPE_LENGTH (SYMBOL_TYPE (sym)));
757 store_typed_floating (dbl_valu, SYMBOL_TYPE (sym), d);
758 SYMBOL_VALUE_BYTES (sym) = dbl_valu;
759 SYMBOL_CLASS (sym) = LOC_CONST_BYTES;
764 /* Defining integer constants this way is kind of silly,
765 since 'e' constants allows the compiler to give not
766 only the value, but the type as well. C has at least
767 int, long, unsigned int, and long long as constant
768 types; other languages probably should have at least
769 unsigned as well as signed constants. */
771 /* We just need one int constant type for all objfiles.
772 It doesn't depend on languages or anything (arguably its
773 name should be a language-specific name for a type of
774 that size, but I'm inclined to say that if the compiler
775 wants a nice name for the type, it can use 'e'). */
776 static struct type *int_const_type;
778 /* Yes, this is as long as a *host* int. That is because we
780 if (int_const_type == NULL)
782 init_type (TYPE_CODE_INT,
783 sizeof (int) * HOST_CHAR_BIT / TARGET_CHAR_BIT, 0,
785 (struct objfile *) NULL);
786 SYMBOL_TYPE (sym) = int_const_type;
787 SYMBOL_VALUE (sym) = atoi (p);
788 SYMBOL_CLASS (sym) = LOC_CONST;
792 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
793 can be represented as integral.
794 e.g. "b:c=e6,0" for "const b = blob1"
795 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
797 SYMBOL_CLASS (sym) = LOC_CONST;
798 SYMBOL_TYPE (sym) = read_type (&p, objfile);
802 SYMBOL_TYPE (sym) = error_type (&p, objfile);
807 /* If the value is too big to fit in an int (perhaps because
808 it is unsigned), or something like that, we silently get
809 a bogus value. The type and everything else about it is
810 correct. Ideally, we should be using whatever we have
811 available for parsing unsigned and long long values,
813 SYMBOL_VALUE (sym) = atoi (p);
818 SYMBOL_CLASS (sym) = LOC_CONST;
819 SYMBOL_TYPE (sym) = error_type (&p, objfile);
822 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
823 add_symbol_to_list (sym, &file_symbols);
827 /* The name of a caught exception. */
828 SYMBOL_TYPE (sym) = read_type (&p, objfile);
829 SYMBOL_CLASS (sym) = LOC_LABEL;
830 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
831 SYMBOL_VALUE_ADDRESS (sym) = valu;
832 add_symbol_to_list (sym, &local_symbols);
836 /* A static function definition. */
837 SYMBOL_TYPE (sym) = read_type (&p, objfile);
838 SYMBOL_CLASS (sym) = LOC_BLOCK;
839 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
840 add_symbol_to_list (sym, &file_symbols);
841 /* fall into process_function_types. */
843 process_function_types:
844 /* Function result types are described as the result type in stabs.
845 We need to convert this to the function-returning-type-X type
846 in GDB. E.g. "int" is converted to "function returning int". */
847 if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_FUNC)
848 SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym));
850 /* All functions in C++ have prototypes. Stabs does not offer an
851 explicit way to identify prototyped or unprototyped functions,
852 but both GCC and Sun CC emit stabs for the "call-as" type rather
853 than the "declared-as" type for unprototyped functions, so
854 we treat all functions as if they were prototyped. This is used
855 primarily for promotion when calling the function from GDB. */
856 TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED;
858 /* fall into process_prototype_types */
860 process_prototype_types:
861 /* Sun acc puts declared types of arguments here. */
864 struct type *ftype = SYMBOL_TYPE (sym);
869 /* Obtain a worst case guess for the number of arguments
870 by counting the semicolons. */
877 /* Allocate parameter information fields and fill them in. */
878 TYPE_FIELDS (ftype) = (struct field *)
879 TYPE_ALLOC (ftype, nsemi * sizeof (struct field));
884 /* A type number of zero indicates the start of varargs.
885 FIXME: GDB currently ignores vararg functions. */
886 if (p[0] == '0' && p[1] == '\0')
888 ptype = read_type (&p, objfile);
890 /* The Sun compilers mark integer arguments, which should
891 be promoted to the width of the calling conventions, with
892 a type which references itself. This type is turned into
893 a TYPE_CODE_VOID type by read_type, and we have to turn
894 it back into builtin_type_int here.
895 FIXME: Do we need a new builtin_type_promoted_int_arg ? */
896 if (TYPE_CODE (ptype) == TYPE_CODE_VOID)
897 ptype = builtin_type_int;
898 TYPE_FIELD_TYPE (ftype, nparams) = ptype;
899 TYPE_FIELD_ARTIFICIAL (ftype, nparams++) = 0;
901 TYPE_NFIELDS (ftype) = nparams;
902 TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED;
907 /* A global function definition. */
908 SYMBOL_TYPE (sym) = read_type (&p, objfile);
909 SYMBOL_CLASS (sym) = LOC_BLOCK;
910 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
911 add_symbol_to_list (sym, &global_symbols);
912 goto process_function_types;
915 /* For a class G (global) symbol, it appears that the
916 value is not correct. It is necessary to search for the
917 corresponding linker definition to find the value.
918 These definitions appear at the end of the namelist. */
919 SYMBOL_TYPE (sym) = read_type (&p, objfile);
920 SYMBOL_CLASS (sym) = LOC_STATIC;
921 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
922 /* Don't add symbol references to global_sym_chain.
923 Symbol references don't have valid names and wont't match up with
924 minimal symbols when the global_sym_chain is relocated.
925 We'll fixup symbol references when we fixup the defining symbol. */
926 if (DEPRECATED_SYMBOL_NAME (sym) && DEPRECATED_SYMBOL_NAME (sym)[0] != '#')
928 i = hashname (DEPRECATED_SYMBOL_NAME (sym));
929 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
930 global_sym_chain[i] = sym;
932 add_symbol_to_list (sym, &global_symbols);
935 /* This case is faked by a conditional above,
936 when there is no code letter in the dbx data.
937 Dbx data never actually contains 'l'. */
940 SYMBOL_TYPE (sym) = read_type (&p, objfile);
941 SYMBOL_CLASS (sym) = LOC_LOCAL;
942 SYMBOL_VALUE (sym) = valu;
943 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
944 add_symbol_to_list (sym, &local_symbols);
949 /* pF is a two-letter code that means a function parameter in Fortran.
950 The type-number specifies the type of the return value.
951 Translate it into a pointer-to-function type. */
955 = lookup_pointer_type
956 (lookup_function_type (read_type (&p, objfile)));
959 SYMBOL_TYPE (sym) = read_type (&p, objfile);
961 SYMBOL_CLASS (sym) = LOC_ARG;
962 SYMBOL_VALUE (sym) = valu;
963 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
964 add_symbol_to_list (sym, &local_symbols);
966 if (gdbarch_byte_order (current_gdbarch) != BFD_ENDIAN_BIG)
968 /* On little-endian machines, this crud is never necessary,
969 and, if the extra bytes contain garbage, is harmful. */
973 /* If it's gcc-compiled, if it says `short', believe it. */
974 if (processing_gcc_compilation || BELIEVE_PCC_PROMOTION)
977 if (!BELIEVE_PCC_PROMOTION)
979 /* This is the signed type which arguments get promoted to. */
980 static struct type *pcc_promotion_type;
981 /* This is the unsigned type which arguments get promoted to. */
982 static struct type *pcc_unsigned_promotion_type;
984 /* Call it "int" because this is mainly C lossage. */
985 if (pcc_promotion_type == NULL)
987 init_type (TYPE_CODE_INT,
988 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
991 if (pcc_unsigned_promotion_type == NULL)
992 pcc_unsigned_promotion_type =
993 init_type (TYPE_CODE_INT,
994 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
995 TYPE_FLAG_UNSIGNED, "unsigned int", NULL);
997 /* If PCC says a parameter is a short or a char, it is
999 if (TYPE_LENGTH (SYMBOL_TYPE (sym)) < TYPE_LENGTH (pcc_promotion_type)
1000 && TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_INT)
1003 TYPE_UNSIGNED (SYMBOL_TYPE (sym))
1004 ? pcc_unsigned_promotion_type
1005 : pcc_promotion_type;
1011 /* acc seems to use P to declare the prototypes of functions that
1012 are referenced by this file. gdb is not prepared to deal
1013 with this extra information. FIXME, it ought to. */
1016 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1017 goto process_prototype_types;
1022 /* Parameter which is in a register. */
1023 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1024 SYMBOL_CLASS (sym) = LOC_REGPARM;
1025 SYMBOL_VALUE (sym) = gdbarch_stab_reg_to_regnum (current_gdbarch, valu);
1026 if (SYMBOL_VALUE (sym) >= gdbarch_num_regs (current_gdbarch)
1027 + gdbarch_num_pseudo_regs (current_gdbarch))
1029 reg_value_complaint (SYMBOL_VALUE (sym),
1030 gdbarch_num_regs (current_gdbarch)
1031 + gdbarch_num_pseudo_regs (current_gdbarch),
1032 SYMBOL_PRINT_NAME (sym));
1033 SYMBOL_VALUE (sym) = gdbarch_sp_regnum (current_gdbarch);
1034 /* Known safe, though useless */
1036 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1037 add_symbol_to_list (sym, &local_symbols);
1041 /* Register variable (either global or local). */
1042 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1043 SYMBOL_CLASS (sym) = LOC_REGISTER;
1044 SYMBOL_VALUE (sym) = gdbarch_stab_reg_to_regnum (current_gdbarch, valu);
1045 if (SYMBOL_VALUE (sym) >= gdbarch_num_regs (current_gdbarch)
1046 + gdbarch_num_pseudo_regs (current_gdbarch))
1048 reg_value_complaint (SYMBOL_VALUE (sym),
1049 gdbarch_num_regs (current_gdbarch)
1050 + gdbarch_num_pseudo_regs (current_gdbarch),
1051 SYMBOL_PRINT_NAME (sym));
1052 SYMBOL_VALUE (sym) = gdbarch_sp_regnum (current_gdbarch);
1053 /* Known safe, though useless */
1055 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1056 if (within_function)
1058 /* Sun cc uses a pair of symbols, one 'p' and one 'r', with
1059 the same name to represent an argument passed in a
1060 register. GCC uses 'P' for the same case. So if we find
1061 such a symbol pair we combine it into one 'P' symbol.
1062 For Sun cc we need to do this regardless of
1063 stabs_argument_has_addr, because the compiler puts out
1064 the 'p' symbol even if it never saves the argument onto
1067 On most machines, we want to preserve both symbols, so
1068 that we can still get information about what is going on
1069 with the stack (VAX for computing args_printed, using
1070 stack slots instead of saved registers in backtraces,
1073 Note that this code illegally combines
1074 main(argc) struct foo argc; { register struct foo argc; }
1075 but this case is considered pathological and causes a warning
1076 from a decent compiler. */
1079 && local_symbols->nsyms > 0
1080 && gdbarch_stabs_argument_has_addr (current_gdbarch,
1083 struct symbol *prev_sym;
1084 prev_sym = local_symbols->symbol[local_symbols->nsyms - 1];
1085 if ((SYMBOL_CLASS (prev_sym) == LOC_REF_ARG
1086 || SYMBOL_CLASS (prev_sym) == LOC_ARG)
1087 && strcmp (DEPRECATED_SYMBOL_NAME (prev_sym),
1088 DEPRECATED_SYMBOL_NAME (sym)) == 0)
1090 SYMBOL_CLASS (prev_sym) = LOC_REGPARM;
1091 /* Use the type from the LOC_REGISTER; that is the type
1092 that is actually in that register. */
1093 SYMBOL_TYPE (prev_sym) = SYMBOL_TYPE (sym);
1094 SYMBOL_VALUE (prev_sym) = SYMBOL_VALUE (sym);
1099 add_symbol_to_list (sym, &local_symbols);
1102 add_symbol_to_list (sym, &file_symbols);
1106 /* Static symbol at top level of file */
1107 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1108 SYMBOL_CLASS (sym) = LOC_STATIC;
1109 SYMBOL_VALUE_ADDRESS (sym) = valu;
1110 #ifdef STATIC_TRANSFORM_NAME
1111 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)))
1113 struct minimal_symbol *msym;
1114 msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile);
1117 DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym));
1118 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
1122 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1123 add_symbol_to_list (sym, &file_symbols);
1127 /* In Ada, there is no distinction between typedef and non-typedef;
1128 any type declaration implicitly has the equivalent of a typedef,
1129 and thus 't' is in fact equivalent to 'Tt'.
1131 Therefore, for Ada units, we check the character immediately
1132 before the 't', and if we do not find a 'T', then make sure to
1133 create the associated symbol in the STRUCT_DOMAIN ('t' definitions
1134 will be stored in the VAR_DOMAIN). If the symbol was indeed
1135 defined as 'Tt' then the STRUCT_DOMAIN symbol will be created
1136 elsewhere, so we don't need to take care of that.
1138 This is important to do, because of forward references:
1139 The cleanup of undefined types stored in undef_types only uses
1140 STRUCT_DOMAIN symbols to perform the replacement. */
1141 synonym = (SYMBOL_LANGUAGE (sym) == language_ada && p[-2] != 'T');
1144 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1146 /* For a nameless type, we don't want a create a symbol, thus we
1147 did not use `sym'. Return without further processing. */
1151 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1152 SYMBOL_VALUE (sym) = valu;
1153 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1154 /* C++ vagaries: we may have a type which is derived from
1155 a base type which did not have its name defined when the
1156 derived class was output. We fill in the derived class's
1157 base part member's name here in that case. */
1158 if (TYPE_NAME (SYMBOL_TYPE (sym)) != NULL)
1159 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT
1160 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)
1161 && TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)))
1164 for (j = TYPE_N_BASECLASSES (SYMBOL_TYPE (sym)) - 1; j >= 0; j--)
1165 if (TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) == 0)
1166 TYPE_BASECLASS_NAME (SYMBOL_TYPE (sym), j) =
1167 type_name_no_tag (TYPE_BASECLASS (SYMBOL_TYPE (sym), j));
1170 if (TYPE_NAME (SYMBOL_TYPE (sym)) == NULL)
1172 /* gcc-2.6 or later (when using -fvtable-thunks)
1173 emits a unique named type for a vtable entry.
1174 Some gdb code depends on that specific name. */
1175 extern const char vtbl_ptr_name[];
1177 if ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR
1178 && strcmp (DEPRECATED_SYMBOL_NAME (sym), vtbl_ptr_name))
1179 || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC)
1181 /* If we are giving a name to a type such as "pointer to
1182 foo" or "function returning foo", we better not set
1183 the TYPE_NAME. If the program contains "typedef char
1184 *caddr_t;", we don't want all variables of type char
1185 * to print as caddr_t. This is not just a
1186 consequence of GDB's type management; PCC and GCC (at
1187 least through version 2.4) both output variables of
1188 either type char * or caddr_t with the type number
1189 defined in the 't' symbol for caddr_t. If a future
1190 compiler cleans this up it GDB is not ready for it
1191 yet, but if it becomes ready we somehow need to
1192 disable this check (without breaking the PCC/GCC2.4
1197 Fortunately, this check seems not to be necessary
1198 for anything except pointers or functions. */
1199 /* ezannoni: 2000-10-26. This seems to apply for
1200 versions of gcc older than 2.8. This was the original
1201 problem: with the following code gdb would tell that
1202 the type for name1 is caddr_t, and func is char()
1203 typedef char *caddr_t;
1215 /* Pascal accepts names for pointer types. */
1216 if (current_subfile->language == language_pascal)
1218 TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym);
1222 TYPE_NAME (SYMBOL_TYPE (sym)) = DEPRECATED_SYMBOL_NAME (sym);
1225 add_symbol_to_list (sym, &file_symbols);
1229 /* Create the STRUCT_DOMAIN clone. */
1230 struct symbol *struct_sym = (struct symbol *)
1231 obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
1234 SYMBOL_CLASS (struct_sym) = LOC_TYPEDEF;
1235 SYMBOL_VALUE (struct_sym) = valu;
1236 SYMBOL_DOMAIN (struct_sym) = STRUCT_DOMAIN;
1237 if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
1238 TYPE_NAME (SYMBOL_TYPE (sym))
1239 = obconcat (&objfile->objfile_obstack, "", "",
1240 DEPRECATED_SYMBOL_NAME (sym));
1241 add_symbol_to_list (struct_sym, &file_symbols);
1247 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1248 by 't' which means we are typedef'ing it as well. */
1249 synonym = *p == 't';
1254 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1256 /* For a nameless type, we don't want a create a symbol, thus we
1257 did not use `sym'. Return without further processing. */
1261 SYMBOL_CLASS (sym) = LOC_TYPEDEF;
1262 SYMBOL_VALUE (sym) = valu;
1263 SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN;
1264 if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0)
1265 TYPE_TAG_NAME (SYMBOL_TYPE (sym))
1266 = obconcat (&objfile->objfile_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym));
1267 add_symbol_to_list (sym, &file_symbols);
1271 /* Clone the sym and then modify it. */
1272 struct symbol *typedef_sym = (struct symbol *)
1273 obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
1274 *typedef_sym = *sym;
1275 SYMBOL_CLASS (typedef_sym) = LOC_TYPEDEF;
1276 SYMBOL_VALUE (typedef_sym) = valu;
1277 SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN;
1278 if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
1279 TYPE_NAME (SYMBOL_TYPE (sym))
1280 = obconcat (&objfile->objfile_obstack, "", "", DEPRECATED_SYMBOL_NAME (sym));
1281 add_symbol_to_list (typedef_sym, &file_symbols);
1286 /* Static symbol of local scope */
1287 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1288 SYMBOL_CLASS (sym) = LOC_STATIC;
1289 SYMBOL_VALUE_ADDRESS (sym) = valu;
1290 #ifdef STATIC_TRANSFORM_NAME
1291 if (IS_STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym)))
1293 struct minimal_symbol *msym;
1294 msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (sym), NULL, objfile);
1297 DEPRECATED_SYMBOL_NAME (sym) = STATIC_TRANSFORM_NAME (DEPRECATED_SYMBOL_NAME (sym));
1298 SYMBOL_VALUE_ADDRESS (sym) = SYMBOL_VALUE_ADDRESS (msym);
1302 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1303 add_symbol_to_list (sym, &local_symbols);
1307 /* Reference parameter */
1308 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1309 SYMBOL_CLASS (sym) = LOC_REF_ARG;
1310 SYMBOL_VALUE (sym) = valu;
1311 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1312 add_symbol_to_list (sym, &local_symbols);
1316 /* Reference parameter which is in a register. */
1317 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1318 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
1319 SYMBOL_VALUE (sym) = gdbarch_stab_reg_to_regnum (current_gdbarch, valu);
1320 if (SYMBOL_VALUE (sym) >= gdbarch_num_regs (current_gdbarch)
1321 + gdbarch_num_pseudo_regs (current_gdbarch))
1323 reg_value_complaint (SYMBOL_VALUE (sym),
1324 gdbarch_num_regs (current_gdbarch)
1325 + gdbarch_num_pseudo_regs (current_gdbarch),
1326 SYMBOL_PRINT_NAME (sym));
1327 SYMBOL_VALUE (sym) = gdbarch_sp_regnum (current_gdbarch);
1328 /* Known safe, though useless */
1330 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1331 add_symbol_to_list (sym, &local_symbols);
1335 /* This is used by Sun FORTRAN for "function result value".
1336 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1337 that Pascal uses it too, but when I tried it Pascal used
1338 "x:3" (local symbol) instead. */
1339 SYMBOL_TYPE (sym) = read_type (&p, objfile);
1340 SYMBOL_CLASS (sym) = LOC_LOCAL;
1341 SYMBOL_VALUE (sym) = valu;
1342 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1343 add_symbol_to_list (sym, &local_symbols);
1347 SYMBOL_TYPE (sym) = error_type (&p, objfile);
1348 SYMBOL_CLASS (sym) = LOC_CONST;
1349 SYMBOL_VALUE (sym) = 0;
1350 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
1351 add_symbol_to_list (sym, &file_symbols);
1355 /* Some systems pass variables of certain types by reference instead
1356 of by value, i.e. they will pass the address of a structure (in a
1357 register or on the stack) instead of the structure itself. */
1359 if (gdbarch_stabs_argument_has_addr (current_gdbarch, SYMBOL_TYPE (sym))
1360 && (SYMBOL_CLASS (sym) == LOC_REGPARM || SYMBOL_CLASS (sym) == LOC_ARG))
1362 /* We have to convert LOC_REGPARM to LOC_REGPARM_ADDR (for
1363 variables passed in a register). */
1364 if (SYMBOL_CLASS (sym) == LOC_REGPARM)
1365 SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR;
1366 /* Likewise for converting LOC_ARG to LOC_REF_ARG (for the 7th
1367 and subsequent arguments on SPARC, for example). */
1368 else if (SYMBOL_CLASS (sym) == LOC_ARG)
1369 SYMBOL_CLASS (sym) = LOC_REF_ARG;
1375 /* Skip rest of this symbol and return an error type.
1377 General notes on error recovery: error_type always skips to the
1378 end of the symbol (modulo cretinous dbx symbol name continuation).
1379 Thus code like this:
1381 if (*(*pp)++ != ';')
1382 return error_type (pp, objfile);
1384 is wrong because if *pp starts out pointing at '\0' (typically as the
1385 result of an earlier error), it will be incremented to point to the
1386 start of the next symbol, which might produce strange results, at least
1387 if you run off the end of the string table. Instead use
1390 return error_type (pp, objfile);
1396 foo = error_type (pp, objfile);
1400 And in case it isn't obvious, the point of all this hair is so the compiler
1401 can define new types and new syntaxes, and old versions of the
1402 debugger will be able to read the new symbol tables. */
1404 static struct type *
1405 error_type (char **pp, struct objfile *objfile)
1407 complaint (&symfile_complaints, _("couldn't parse type; debugger out of date?"));
1410 /* Skip to end of symbol. */
1411 while (**pp != '\0')
1416 /* Check for and handle cretinous dbx symbol name continuation! */
1417 if ((*pp)[-1] == '\\' || (*pp)[-1] == '?')
1419 *pp = next_symbol_text (objfile);
1426 return (builtin_type_error);
1430 /* Read type information or a type definition; return the type. Even
1431 though this routine accepts either type information or a type
1432 definition, the distinction is relevant--some parts of stabsread.c
1433 assume that type information starts with a digit, '-', or '(' in
1434 deciding whether to call read_type. */
1436 static struct type *
1437 read_type (char **pp, struct objfile *objfile)
1439 struct type *type = 0;
1442 char type_descriptor;
1444 /* Size in bits of type if specified by a type attribute, or -1 if
1445 there is no size attribute. */
1448 /* Used to distinguish string and bitstring from char-array and set. */
1451 /* Used to distinguish vector from array. */
1454 /* Read type number if present. The type number may be omitted.
1455 for instance in a two-dimensional array declared with type
1456 "ar1;1;10;ar1;1;10;4". */
1457 if ((**pp >= '0' && **pp <= '9')
1461 if (read_type_number (pp, typenums) != 0)
1462 return error_type (pp, objfile);
1466 /* Type is not being defined here. Either it already
1467 exists, or this is a forward reference to it.
1468 dbx_alloc_type handles both cases. */
1469 type = dbx_alloc_type (typenums, objfile);
1471 /* If this is a forward reference, arrange to complain if it
1472 doesn't get patched up by the time we're done
1474 if (TYPE_CODE (type) == TYPE_CODE_UNDEF)
1475 add_undefined_type (type, typenums);
1480 /* Type is being defined here. */
1482 Also skip the type descriptor - we get it below with (*pp)[-1]. */
1487 /* 'typenums=' not present, type is anonymous. Read and return
1488 the definition, but don't put it in the type vector. */
1489 typenums[0] = typenums[1] = -1;
1494 type_descriptor = (*pp)[-1];
1495 switch (type_descriptor)
1499 enum type_code code;
1501 /* Used to index through file_symbols. */
1502 struct pending *ppt;
1505 /* Name including "struct", etc. */
1509 char *from, *to, *p, *q1, *q2;
1511 /* Set the type code according to the following letter. */
1515 code = TYPE_CODE_STRUCT;
1518 code = TYPE_CODE_UNION;
1521 code = TYPE_CODE_ENUM;
1525 /* Complain and keep going, so compilers can invent new
1526 cross-reference types. */
1527 complaint (&symfile_complaints,
1528 _("Unrecognized cross-reference type `%c'"), (*pp)[0]);
1529 code = TYPE_CODE_STRUCT;
1534 q1 = strchr (*pp, '<');
1535 p = strchr (*pp, ':');
1537 return error_type (pp, objfile);
1538 if (q1 && p > q1 && p[1] == ':')
1540 int nesting_level = 0;
1541 for (q2 = q1; *q2; q2++)
1545 else if (*q2 == '>')
1547 else if (*q2 == ':' && nesting_level == 0)
1552 return error_type (pp, objfile);
1555 (char *) obstack_alloc (&objfile->objfile_obstack, p - *pp + 1);
1557 /* Copy the name. */
1563 /* Set the pointer ahead of the name which we just read, and
1568 /* If this type has already been declared, then reuse the same
1569 type, rather than allocating a new one. This saves some
1572 for (ppt = file_symbols; ppt; ppt = ppt->next)
1573 for (i = 0; i < ppt->nsyms; i++)
1575 struct symbol *sym = ppt->symbol[i];
1577 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
1578 && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
1579 && (TYPE_CODE (SYMBOL_TYPE (sym)) == code)
1580 && strcmp (DEPRECATED_SYMBOL_NAME (sym), type_name) == 0)
1582 obstack_free (&objfile->objfile_obstack, type_name);
1583 type = SYMBOL_TYPE (sym);
1584 if (typenums[0] != -1)
1585 *dbx_lookup_type (typenums) = type;
1590 /* Didn't find the type to which this refers, so we must
1591 be dealing with a forward reference. Allocate a type
1592 structure for it, and keep track of it so we can
1593 fill in the rest of the fields when we get the full
1595 type = dbx_alloc_type (typenums, objfile);
1596 TYPE_CODE (type) = code;
1597 TYPE_TAG_NAME (type) = type_name;
1598 INIT_CPLUS_SPECIFIC (type);
1599 TYPE_FLAGS (type) |= TYPE_FLAG_STUB;
1601 add_undefined_type (type, typenums);
1605 case '-': /* RS/6000 built-in type */
1619 /* We deal with something like t(1,2)=(3,4)=... which
1620 the Lucid compiler and recent gcc versions (post 2.7.3) use. */
1622 /* Allocate and enter the typedef type first.
1623 This handles recursive types. */
1624 type = dbx_alloc_type (typenums, objfile);
1625 TYPE_CODE (type) = TYPE_CODE_TYPEDEF;
1627 struct type *xtype = read_type (pp, objfile);
1630 /* It's being defined as itself. That means it is "void". */
1631 TYPE_CODE (type) = TYPE_CODE_VOID;
1632 TYPE_LENGTH (type) = 1;
1634 else if (type_size >= 0 || is_string)
1636 /* This is the absolute wrong way to construct types. Every
1637 other debug format has found a way around this problem and
1638 the related problems with unnecessarily stubbed types;
1639 someone motivated should attempt to clean up the issue
1640 here as well. Once a type pointed to has been created it
1641 should not be modified.
1643 Well, it's not *absolutely* wrong. Constructing recursive
1644 types (trees, linked lists) necessarily entails modifying
1645 types after creating them. Constructing any loop structure
1646 entails side effects. The Dwarf 2 reader does handle this
1647 more gracefully (it never constructs more than once
1648 instance of a type object, so it doesn't have to copy type
1649 objects wholesale), but it still mutates type objects after
1650 other folks have references to them.
1652 Keep in mind that this circularity/mutation issue shows up
1653 at the source language level, too: C's "incomplete types",
1654 for example. So the proper cleanup, I think, would be to
1655 limit GDB's type smashing to match exactly those required
1656 by the source language. So GDB could have a
1657 "complete_this_type" function, but never create unnecessary
1658 copies of a type otherwise. */
1659 replace_type (type, xtype);
1660 TYPE_NAME (type) = NULL;
1661 TYPE_TAG_NAME (type) = NULL;
1665 TYPE_FLAGS (type) |= TYPE_FLAG_TARGET_STUB;
1666 TYPE_TARGET_TYPE (type) = xtype;
1671 /* In the following types, we must be sure to overwrite any existing
1672 type that the typenums refer to, rather than allocating a new one
1673 and making the typenums point to the new one. This is because there
1674 may already be pointers to the existing type (if it had been
1675 forward-referenced), and we must change it to a pointer, function,
1676 reference, or whatever, *in-place*. */
1678 case '*': /* Pointer to another type */
1679 type1 = read_type (pp, objfile);
1680 type = make_pointer_type (type1, dbx_lookup_type (typenums));
1683 case '&': /* Reference to another type */
1684 type1 = read_type (pp, objfile);
1685 type = make_reference_type (type1, dbx_lookup_type (typenums));
1688 case 'f': /* Function returning another type */
1689 type1 = read_type (pp, objfile);
1690 type = make_function_type (type1, dbx_lookup_type (typenums));
1693 case 'g': /* Prototyped function. (Sun) */
1695 /* Unresolved questions:
1697 - According to Sun's ``STABS Interface Manual'', for 'f'
1698 and 'F' symbol descriptors, a `0' in the argument type list
1699 indicates a varargs function. But it doesn't say how 'g'
1700 type descriptors represent that info. Someone with access
1701 to Sun's toolchain should try it out.
1703 - According to the comment in define_symbol (search for
1704 `process_prototype_types:'), Sun emits integer arguments as
1705 types which ref themselves --- like `void' types. Do we
1706 have to deal with that here, too? Again, someone with
1707 access to Sun's toolchain should try it out and let us
1710 const char *type_start = (*pp) - 1;
1711 struct type *return_type = read_type (pp, objfile);
1712 struct type *func_type
1713 = make_function_type (return_type, dbx_lookup_type (typenums));
1716 struct type_list *next;
1720 while (**pp && **pp != '#')
1722 struct type *arg_type = read_type (pp, objfile);
1723 struct type_list *new = alloca (sizeof (*new));
1724 new->type = arg_type;
1725 new->next = arg_types;
1733 complaint (&symfile_complaints,
1734 _("Prototyped function type didn't end arguments with `#':\n%s"),
1738 /* If there is just one argument whose type is `void', then
1739 that's just an empty argument list. */
1741 && ! arg_types->next
1742 && TYPE_CODE (arg_types->type) == TYPE_CODE_VOID)
1745 TYPE_FIELDS (func_type)
1746 = (struct field *) TYPE_ALLOC (func_type,
1747 num_args * sizeof (struct field));
1748 memset (TYPE_FIELDS (func_type), 0, num_args * sizeof (struct field));
1751 struct type_list *t;
1753 /* We stuck each argument type onto the front of the list
1754 when we read it, so the list is reversed. Build the
1755 fields array right-to-left. */
1756 for (t = arg_types, i = num_args - 1; t; t = t->next, i--)
1757 TYPE_FIELD_TYPE (func_type, i) = t->type;
1759 TYPE_NFIELDS (func_type) = num_args;
1760 TYPE_FLAGS (func_type) |= TYPE_FLAG_PROTOTYPED;
1766 case 'k': /* Const qualifier on some type (Sun) */
1767 type = read_type (pp, objfile);
1768 type = make_cv_type (1, TYPE_VOLATILE (type), type,
1769 dbx_lookup_type (typenums));
1772 case 'B': /* Volatile qual on some type (Sun) */
1773 type = read_type (pp, objfile);
1774 type = make_cv_type (TYPE_CONST (type), 1, type,
1775 dbx_lookup_type (typenums));
1779 if (isdigit (**pp) || **pp == '(' || **pp == '-')
1780 { /* Member (class & variable) type */
1781 /* FIXME -- we should be doing smash_to_XXX types here. */
1783 struct type *domain = read_type (pp, objfile);
1784 struct type *memtype;
1787 /* Invalid member type data format. */
1788 return error_type (pp, objfile);
1791 memtype = read_type (pp, objfile);
1792 type = dbx_alloc_type (typenums, objfile);
1793 smash_to_memberptr_type (type, domain, memtype);
1796 /* type attribute */
1799 /* Skip to the semicolon. */
1800 while (**pp != ';' && **pp != '\0')
1803 return error_type (pp, objfile);
1805 ++ * pp; /* Skip the semicolon. */
1809 case 's': /* Size attribute */
1810 type_size = atoi (attr + 1);
1815 case 'S': /* String attribute */
1816 /* FIXME: check to see if following type is array? */
1820 case 'V': /* Vector attribute */
1821 /* FIXME: check to see if following type is array? */
1826 /* Ignore unrecognized type attributes, so future compilers
1827 can invent new ones. */
1835 case '#': /* Method (class & fn) type */
1836 if ((*pp)[0] == '#')
1838 /* We'll get the parameter types from the name. */
1839 struct type *return_type;
1842 return_type = read_type (pp, objfile);
1843 if (*(*pp)++ != ';')
1844 complaint (&symfile_complaints,
1845 _("invalid (minimal) member type data format at symtab pos %d."),
1847 type = allocate_stub_method (return_type);
1848 if (typenums[0] != -1)
1849 *dbx_lookup_type (typenums) = type;
1853 struct type *domain = read_type (pp, objfile);
1854 struct type *return_type;
1859 /* Invalid member type data format. */
1860 return error_type (pp, objfile);
1864 return_type = read_type (pp, objfile);
1865 args = read_args (pp, ';', objfile, &nargs, &varargs);
1867 return error_type (pp, objfile);
1868 type = dbx_alloc_type (typenums, objfile);
1869 smash_to_method_type (type, domain, return_type, args,
1874 case 'r': /* Range type */
1875 type = read_range_type (pp, typenums, type_size, objfile);
1876 if (typenums[0] != -1)
1877 *dbx_lookup_type (typenums) = type;
1882 /* Sun ACC builtin int type */
1883 type = read_sun_builtin_type (pp, typenums, objfile);
1884 if (typenums[0] != -1)
1885 *dbx_lookup_type (typenums) = type;
1889 case 'R': /* Sun ACC builtin float type */
1890 type = read_sun_floating_type (pp, typenums, objfile);
1891 if (typenums[0] != -1)
1892 *dbx_lookup_type (typenums) = type;
1895 case 'e': /* Enumeration type */
1896 type = dbx_alloc_type (typenums, objfile);
1897 type = read_enum_type (pp, type, objfile);
1898 if (typenums[0] != -1)
1899 *dbx_lookup_type (typenums) = type;
1902 case 's': /* Struct type */
1903 case 'u': /* Union type */
1905 enum type_code type_code = TYPE_CODE_UNDEF;
1906 type = dbx_alloc_type (typenums, objfile);
1907 switch (type_descriptor)
1910 type_code = TYPE_CODE_STRUCT;
1913 type_code = TYPE_CODE_UNION;
1916 type = read_struct_type (pp, type, type_code, objfile);
1920 case 'a': /* Array type */
1922 return error_type (pp, objfile);
1925 type = dbx_alloc_type (typenums, objfile);
1926 type = read_array_type (pp, type, objfile);
1928 TYPE_CODE (type) = TYPE_CODE_STRING;
1930 TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR;
1933 case 'S': /* Set or bitstring type */
1934 type1 = read_type (pp, objfile);
1935 type = create_set_type ((struct type *) NULL, type1);
1937 TYPE_CODE (type) = TYPE_CODE_BITSTRING;
1938 if (typenums[0] != -1)
1939 *dbx_lookup_type (typenums) = type;
1943 --*pp; /* Go back to the symbol in error */
1944 /* Particularly important if it was \0! */
1945 return error_type (pp, objfile);
1950 warning (_("GDB internal error, type is NULL in stabsread.c."));
1951 return error_type (pp, objfile);
1954 /* Size specified in a type attribute overrides any other size. */
1955 if (type_size != -1)
1956 TYPE_LENGTH (type) = (type_size + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT;
1961 /* RS/6000 xlc/dbx combination uses a set of builtin types, starting from -1.
1962 Return the proper type node for a given builtin type number. */
1964 static struct type *
1965 rs6000_builtin_type (int typenum)
1967 /* We recognize types numbered from -NUMBER_RECOGNIZED to -1. */
1968 #define NUMBER_RECOGNIZED 34
1969 /* This includes an empty slot for type number -0. */
1970 static struct type *negative_types[NUMBER_RECOGNIZED + 1];
1971 struct type *rettype = NULL;
1973 if (typenum >= 0 || typenum < -NUMBER_RECOGNIZED)
1975 complaint (&symfile_complaints, _("Unknown builtin type %d"), typenum);
1976 return builtin_type_error;
1978 if (negative_types[-typenum] != NULL)
1979 return negative_types[-typenum];
1981 #if TARGET_CHAR_BIT != 8
1982 #error This code wrong for TARGET_CHAR_BIT not 8
1983 /* These definitions all assume that TARGET_CHAR_BIT is 8. I think
1984 that if that ever becomes not true, the correct fix will be to
1985 make the size in the struct type to be in bits, not in units of
1992 /* The size of this and all the other types are fixed, defined
1993 by the debugging format. If there is a type called "int" which
1994 is other than 32 bits, then it should use a new negative type
1995 number (or avoid negative type numbers for that case).
1996 See stabs.texinfo. */
1997 rettype = init_type (TYPE_CODE_INT, 4, 0, "int", NULL);
2000 rettype = init_type (TYPE_CODE_INT, 1, 0, "char", NULL);
2003 rettype = init_type (TYPE_CODE_INT, 2, 0, "short", NULL);
2006 rettype = init_type (TYPE_CODE_INT, 4, 0, "long", NULL);
2009 rettype = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED,
2010 "unsigned char", NULL);
2013 rettype = init_type (TYPE_CODE_INT, 1, 0, "signed char", NULL);
2016 rettype = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED,
2017 "unsigned short", NULL);
2020 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2021 "unsigned int", NULL);
2024 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2027 rettype = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED,
2028 "unsigned long", NULL);
2031 rettype = init_type (TYPE_CODE_VOID, 1, 0, "void", NULL);
2034 /* IEEE single precision (32 bit). */
2035 rettype = init_type (TYPE_CODE_FLT, 4, 0, "float", NULL);
2038 /* IEEE double precision (64 bit). */
2039 rettype = init_type (TYPE_CODE_FLT, 8, 0, "double", NULL);
2042 /* This is an IEEE double on the RS/6000, and different machines with
2043 different sizes for "long double" should use different negative
2044 type numbers. See stabs.texinfo. */
2045 rettype = init_type (TYPE_CODE_FLT, 8, 0, "long double", NULL);
2048 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer", NULL);
2051 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2055 rettype = init_type (TYPE_CODE_FLT, 4, 0, "short real", NULL);
2058 rettype = init_type (TYPE_CODE_FLT, 8, 0, "real", NULL);
2061 rettype = init_type (TYPE_CODE_ERROR, 0, 0, "stringptr", NULL);
2064 rettype = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED,
2068 rettype = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED,
2072 rettype = init_type (TYPE_CODE_BOOL, 2, TYPE_FLAG_UNSIGNED,
2076 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2080 rettype = init_type (TYPE_CODE_BOOL, 4, TYPE_FLAG_UNSIGNED,
2084 /* Complex type consisting of two IEEE single precision values. */
2085 rettype = init_type (TYPE_CODE_COMPLEX, 8, 0, "complex", NULL);
2086 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 4, 0, "float",
2090 /* Complex type consisting of two IEEE double precision values. */
2091 rettype = init_type (TYPE_CODE_COMPLEX, 16, 0, "double complex", NULL);
2092 TYPE_TARGET_TYPE (rettype) = init_type (TYPE_CODE_FLT, 8, 0, "double",
2096 rettype = init_type (TYPE_CODE_INT, 1, 0, "integer*1", NULL);
2099 rettype = init_type (TYPE_CODE_INT, 2, 0, "integer*2", NULL);
2102 rettype = init_type (TYPE_CODE_INT, 4, 0, "integer*4", NULL);
2105 rettype = init_type (TYPE_CODE_CHAR, 2, 0, "wchar", NULL);
2108 rettype = init_type (TYPE_CODE_INT, 8, 0, "long long", NULL);
2111 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2112 "unsigned long long", NULL);
2115 rettype = init_type (TYPE_CODE_INT, 8, TYPE_FLAG_UNSIGNED,
2119 rettype = init_type (TYPE_CODE_INT, 8, 0, "integer*8", NULL);
2122 negative_types[-typenum] = rettype;
2126 /* This page contains subroutines of read_type. */
2128 /* Replace *OLD_NAME with the method name portion of PHYSNAME. */
2131 update_method_name_from_physname (char **old_name, char *physname)
2135 method_name = method_name_from_physname (physname);
2137 if (method_name == NULL)
2139 complaint (&symfile_complaints,
2140 _("Method has bad physname %s\n"), physname);
2144 if (strcmp (*old_name, method_name) != 0)
2147 *old_name = method_name;
2150 xfree (method_name);
2153 /* Read member function stabs info for C++ classes. The form of each member
2156 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2158 An example with two member functions is:
2160 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2162 For the case of overloaded operators, the format is op$::*.funcs, where
2163 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2164 name (such as `+=') and `.' marks the end of the operator name.
2166 Returns 1 for success, 0 for failure. */
2169 read_member_functions (struct field_info *fip, char **pp, struct type *type,
2170 struct objfile *objfile)
2174 /* Total number of member functions defined in this class. If the class
2175 defines two `f' functions, and one `g' function, then this will have
2177 int total_length = 0;
2181 struct next_fnfield *next;
2182 struct fn_field fn_field;
2185 struct type *look_ahead_type;
2186 struct next_fnfieldlist *new_fnlist;
2187 struct next_fnfield *new_sublist;
2191 /* Process each list until we find something that is not a member function
2192 or find the end of the functions. */
2196 /* We should be positioned at the start of the function name.
2197 Scan forward to find the first ':' and if it is not the
2198 first of a "::" delimiter, then this is not a member function. */
2210 look_ahead_type = NULL;
2213 new_fnlist = (struct next_fnfieldlist *)
2214 xmalloc (sizeof (struct next_fnfieldlist));
2215 make_cleanup (xfree, new_fnlist);
2216 memset (new_fnlist, 0, sizeof (struct next_fnfieldlist));
2218 if ((*pp)[0] == 'o' && (*pp)[1] == 'p' && is_cplus_marker ((*pp)[2]))
2220 /* This is a completely wierd case. In order to stuff in the
2221 names that might contain colons (the usual name delimiter),
2222 Mike Tiemann defined a different name format which is
2223 signalled if the identifier is "op$". In that case, the
2224 format is "op$::XXXX." where XXXX is the name. This is
2225 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2226 /* This lets the user type "break operator+".
2227 We could just put in "+" as the name, but that wouldn't
2229 static char opname[32] = "op$";
2230 char *o = opname + 3;
2232 /* Skip past '::'. */
2235 STABS_CONTINUE (pp, objfile);
2241 main_fn_name = savestring (opname, o - opname);
2247 main_fn_name = savestring (*pp, p - *pp);
2248 /* Skip past '::'. */
2251 new_fnlist->fn_fieldlist.name = main_fn_name;
2256 (struct next_fnfield *) xmalloc (sizeof (struct next_fnfield));
2257 make_cleanup (xfree, new_sublist);
2258 memset (new_sublist, 0, sizeof (struct next_fnfield));
2260 /* Check for and handle cretinous dbx symbol name continuation! */
2261 if (look_ahead_type == NULL)
2264 STABS_CONTINUE (pp, objfile);
2266 new_sublist->fn_field.type = read_type (pp, objfile);
2269 /* Invalid symtab info for member function. */
2275 /* g++ version 1 kludge */
2276 new_sublist->fn_field.type = look_ahead_type;
2277 look_ahead_type = NULL;
2287 /* If this is just a stub, then we don't have the real name here. */
2289 if (TYPE_STUB (new_sublist->fn_field.type))
2291 if (!TYPE_DOMAIN_TYPE (new_sublist->fn_field.type))
2292 TYPE_DOMAIN_TYPE (new_sublist->fn_field.type) = type;
2293 new_sublist->fn_field.is_stub = 1;
2295 new_sublist->fn_field.physname = savestring (*pp, p - *pp);
2298 /* Set this member function's visibility fields. */
2301 case VISIBILITY_PRIVATE:
2302 new_sublist->fn_field.is_private = 1;
2304 case VISIBILITY_PROTECTED:
2305 new_sublist->fn_field.is_protected = 1;
2309 STABS_CONTINUE (pp, objfile);
2312 case 'A': /* Normal functions. */
2313 new_sublist->fn_field.is_const = 0;
2314 new_sublist->fn_field.is_volatile = 0;
2317 case 'B': /* `const' member functions. */
2318 new_sublist->fn_field.is_const = 1;
2319 new_sublist->fn_field.is_volatile = 0;
2322 case 'C': /* `volatile' member function. */
2323 new_sublist->fn_field.is_const = 0;
2324 new_sublist->fn_field.is_volatile = 1;
2327 case 'D': /* `const volatile' member function. */
2328 new_sublist->fn_field.is_const = 1;
2329 new_sublist->fn_field.is_volatile = 1;
2332 case '*': /* File compiled with g++ version 1 -- no info */
2337 complaint (&symfile_complaints,
2338 _("const/volatile indicator missing, got '%c'"), **pp);
2347 /* virtual member function, followed by index.
2348 The sign bit is set to distinguish pointers-to-methods
2349 from virtual function indicies. Since the array is
2350 in words, the quantity must be shifted left by 1
2351 on 16 bit machine, and by 2 on 32 bit machine, forcing
2352 the sign bit out, and usable as a valid index into
2353 the array. Remove the sign bit here. */
2354 new_sublist->fn_field.voffset =
2355 (0x7fffffff & read_huge_number (pp, ';', &nbits, 0)) + 2;
2359 STABS_CONTINUE (pp, objfile);
2360 if (**pp == ';' || **pp == '\0')
2362 /* Must be g++ version 1. */
2363 new_sublist->fn_field.fcontext = 0;
2367 /* Figure out from whence this virtual function came.
2368 It may belong to virtual function table of
2369 one of its baseclasses. */
2370 look_ahead_type = read_type (pp, objfile);
2373 /* g++ version 1 overloaded methods. */
2377 new_sublist->fn_field.fcontext = look_ahead_type;
2386 look_ahead_type = NULL;
2392 /* static member function. */
2394 int slen = strlen (main_fn_name);
2396 new_sublist->fn_field.voffset = VOFFSET_STATIC;
2398 /* For static member functions, we can't tell if they
2399 are stubbed, as they are put out as functions, and not as
2401 GCC v2 emits the fully mangled name if
2402 dbxout.c:flag_minimal_debug is not set, so we have to
2403 detect a fully mangled physname here and set is_stub
2404 accordingly. Fully mangled physnames in v2 start with
2405 the member function name, followed by two underscores.
2406 GCC v3 currently always emits stubbed member functions,
2407 but with fully mangled physnames, which start with _Z. */
2408 if (!(strncmp (new_sublist->fn_field.physname,
2409 main_fn_name, slen) == 0
2410 && new_sublist->fn_field.physname[slen] == '_'
2411 && new_sublist->fn_field.physname[slen + 1] == '_'))
2413 new_sublist->fn_field.is_stub = 1;
2420 complaint (&symfile_complaints,
2421 _("member function type missing, got '%c'"), (*pp)[-1]);
2422 /* Fall through into normal member function. */
2425 /* normal member function. */
2426 new_sublist->fn_field.voffset = 0;
2427 new_sublist->fn_field.fcontext = 0;
2431 new_sublist->next = sublist;
2432 sublist = new_sublist;
2434 STABS_CONTINUE (pp, objfile);
2436 while (**pp != ';' && **pp != '\0');
2439 STABS_CONTINUE (pp, objfile);
2441 /* Skip GCC 3.X member functions which are duplicates of the callable
2442 constructor/destructor. */
2443 if (strcmp (main_fn_name, "__base_ctor") == 0
2444 || strcmp (main_fn_name, "__base_dtor") == 0
2445 || strcmp (main_fn_name, "__deleting_dtor") == 0)
2447 xfree (main_fn_name);
2452 int has_destructor = 0, has_other = 0;
2454 struct next_fnfield *tmp_sublist;
2456 /* Various versions of GCC emit various mostly-useless
2457 strings in the name field for special member functions.
2459 For stub methods, we need to defer correcting the name
2460 until we are ready to unstub the method, because the current
2461 name string is used by gdb_mangle_name. The only stub methods
2462 of concern here are GNU v2 operators; other methods have their
2463 names correct (see caveat below).
2465 For non-stub methods, in GNU v3, we have a complete physname.
2466 Therefore we can safely correct the name now. This primarily
2467 affects constructors and destructors, whose name will be
2468 __comp_ctor or __comp_dtor instead of Foo or ~Foo. Cast
2469 operators will also have incorrect names; for instance,
2470 "operator int" will be named "operator i" (i.e. the type is
2473 For non-stub methods in GNU v2, we have no easy way to
2474 know if we have a complete physname or not. For most
2475 methods the result depends on the platform (if CPLUS_MARKER
2476 can be `$' or `.', it will use minimal debug information, or
2477 otherwise the full physname will be included).
2479 Rather than dealing with this, we take a different approach.
2480 For v3 mangled names, we can use the full physname; for v2,
2481 we use cplus_demangle_opname (which is actually v2 specific),
2482 because the only interesting names are all operators - once again
2483 barring the caveat below. Skip this process if any method in the
2484 group is a stub, to prevent our fouling up the workings of
2487 The caveat: GCC 2.95.x (and earlier?) put constructors and
2488 destructors in the same method group. We need to split this
2489 into two groups, because they should have different names.
2490 So for each method group we check whether it contains both
2491 routines whose physname appears to be a destructor (the physnames
2492 for and destructors are always provided, due to quirks in v2
2493 mangling) and routines whose physname does not appear to be a
2494 destructor. If so then we break up the list into two halves.
2495 Even if the constructors and destructors aren't in the same group
2496 the destructor will still lack the leading tilde, so that also
2499 So, to summarize what we expect and handle here:
2501 Given Given Real Real Action
2502 method name physname physname method name
2504 __opi [none] __opi__3Foo operator int opname
2506 Foo _._3Foo _._3Foo ~Foo separate and
2508 operator i _ZN3FoocviEv _ZN3FoocviEv operator int demangle
2509 __comp_ctor _ZN3FooC1ERKS_ _ZN3FooC1ERKS_ Foo demangle
2512 tmp_sublist = sublist;
2513 while (tmp_sublist != NULL)
2515 if (tmp_sublist->fn_field.is_stub)
2517 if (tmp_sublist->fn_field.physname[0] == '_'
2518 && tmp_sublist->fn_field.physname[1] == 'Z')
2521 if (is_destructor_name (tmp_sublist->fn_field.physname))
2526 tmp_sublist = tmp_sublist->next;
2529 if (has_destructor && has_other)
2531 struct next_fnfieldlist *destr_fnlist;
2532 struct next_fnfield *last_sublist;
2534 /* Create a new fn_fieldlist for the destructors. */
2536 destr_fnlist = (struct next_fnfieldlist *)
2537 xmalloc (sizeof (struct next_fnfieldlist));
2538 make_cleanup (xfree, destr_fnlist);
2539 memset (destr_fnlist, 0, sizeof (struct next_fnfieldlist));
2540 destr_fnlist->fn_fieldlist.name
2541 = obconcat (&objfile->objfile_obstack, "", "~",
2542 new_fnlist->fn_fieldlist.name);
2544 destr_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
2545 obstack_alloc (&objfile->objfile_obstack,
2546 sizeof (struct fn_field) * has_destructor);
2547 memset (destr_fnlist->fn_fieldlist.fn_fields, 0,
2548 sizeof (struct fn_field) * has_destructor);
2549 tmp_sublist = sublist;
2550 last_sublist = NULL;
2552 while (tmp_sublist != NULL)
2554 if (!is_destructor_name (tmp_sublist->fn_field.physname))
2556 tmp_sublist = tmp_sublist->next;
2560 destr_fnlist->fn_fieldlist.fn_fields[i++]
2561 = tmp_sublist->fn_field;
2563 last_sublist->next = tmp_sublist->next;
2565 sublist = tmp_sublist->next;
2566 last_sublist = tmp_sublist;
2567 tmp_sublist = tmp_sublist->next;
2570 destr_fnlist->fn_fieldlist.length = has_destructor;
2571 destr_fnlist->next = fip->fnlist;
2572 fip->fnlist = destr_fnlist;
2574 total_length += has_destructor;
2575 length -= has_destructor;
2579 /* v3 mangling prevents the use of abbreviated physnames,
2580 so we can do this here. There are stubbed methods in v3
2582 - in -gstabs instead of -gstabs+
2583 - or for static methods, which are output as a function type
2584 instead of a method type. */
2586 update_method_name_from_physname (&new_fnlist->fn_fieldlist.name,
2587 sublist->fn_field.physname);
2589 else if (has_destructor && new_fnlist->fn_fieldlist.name[0] != '~')
2591 new_fnlist->fn_fieldlist.name =
2592 concat ("~", main_fn_name, (char *)NULL);
2593 xfree (main_fn_name);
2597 char dem_opname[256];
2599 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
2600 dem_opname, DMGL_ANSI);
2602 ret = cplus_demangle_opname (new_fnlist->fn_fieldlist.name,
2605 new_fnlist->fn_fieldlist.name
2606 = obsavestring (dem_opname, strlen (dem_opname),
2607 &objfile->objfile_obstack);
2610 new_fnlist->fn_fieldlist.fn_fields = (struct fn_field *)
2611 obstack_alloc (&objfile->objfile_obstack,
2612 sizeof (struct fn_field) * length);
2613 memset (new_fnlist->fn_fieldlist.fn_fields, 0,
2614 sizeof (struct fn_field) * length);
2615 for (i = length; (i--, sublist); sublist = sublist->next)
2617 new_fnlist->fn_fieldlist.fn_fields[i] = sublist->fn_field;
2620 new_fnlist->fn_fieldlist.length = length;
2621 new_fnlist->next = fip->fnlist;
2622 fip->fnlist = new_fnlist;
2624 total_length += length;
2630 ALLOCATE_CPLUS_STRUCT_TYPE (type);
2631 TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *)
2632 TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * nfn_fields);
2633 memset (TYPE_FN_FIELDLISTS (type), 0,
2634 sizeof (struct fn_fieldlist) * nfn_fields);
2635 TYPE_NFN_FIELDS (type) = nfn_fields;
2636 TYPE_NFN_FIELDS_TOTAL (type) = total_length;
2642 /* Special GNU C++ name.
2644 Returns 1 for success, 0 for failure. "failure" means that we can't
2645 keep parsing and it's time for error_type(). */
2648 read_cpp_abbrev (struct field_info *fip, char **pp, struct type *type,
2649 struct objfile *objfile)
2654 struct type *context;
2664 /* At this point, *pp points to something like "22:23=*22...",
2665 where the type number before the ':' is the "context" and
2666 everything after is a regular type definition. Lookup the
2667 type, find it's name, and construct the field name. */
2669 context = read_type (pp, objfile);
2673 case 'f': /* $vf -- a virtual function table pointer */
2674 name = type_name_no_tag (context);
2679 fip->list->field.name =
2680 obconcat (&objfile->objfile_obstack, vptr_name, name, "");
2683 case 'b': /* $vb -- a virtual bsomethingorother */
2684 name = type_name_no_tag (context);
2687 complaint (&symfile_complaints,
2688 _("C++ abbreviated type name unknown at symtab pos %d"),
2692 fip->list->field.name =
2693 obconcat (&objfile->objfile_obstack, vb_name, name, "");
2697 invalid_cpp_abbrev_complaint (*pp);
2698 fip->list->field.name =
2699 obconcat (&objfile->objfile_obstack,
2700 "INVALID_CPLUSPLUS_ABBREV", "", "");
2704 /* At this point, *pp points to the ':'. Skip it and read the
2710 invalid_cpp_abbrev_complaint (*pp);
2713 fip->list->field.type = read_type (pp, objfile);
2715 (*pp)++; /* Skip the comma. */
2721 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ';', &nbits,
2726 /* This field is unpacked. */
2727 FIELD_BITSIZE (fip->list->field) = 0;
2728 fip->list->visibility = VISIBILITY_PRIVATE;
2732 invalid_cpp_abbrev_complaint (*pp);
2733 /* We have no idea what syntax an unrecognized abbrev would have, so
2734 better return 0. If we returned 1, we would need to at least advance
2735 *pp to avoid an infinite loop. */
2742 read_one_struct_field (struct field_info *fip, char **pp, char *p,
2743 struct type *type, struct objfile *objfile)
2745 fip->list->field.name =
2746 obsavestring (*pp, p - *pp, &objfile->objfile_obstack);
2749 /* This means we have a visibility for a field coming. */
2753 fip->list->visibility = *(*pp)++;
2757 /* normal dbx-style format, no explicit visibility */
2758 fip->list->visibility = VISIBILITY_PUBLIC;
2761 fip->list->field.type = read_type (pp, objfile);
2766 /* Possible future hook for nested types. */
2769 fip->list->field.bitpos = (long) -2; /* nested type */
2779 /* Static class member. */
2780 SET_FIELD_PHYSNAME (fip->list->field, savestring (*pp, p - *pp));
2784 else if (**pp != ',')
2786 /* Bad structure-type format. */
2787 stabs_general_complaint ("bad structure-type format");
2791 (*pp)++; /* Skip the comma. */
2795 FIELD_BITPOS (fip->list->field) = read_huge_number (pp, ',', &nbits, 0);
2798 stabs_general_complaint ("bad structure-type format");
2801 FIELD_BITSIZE (fip->list->field) = read_huge_number (pp, ';', &nbits, 0);
2804 stabs_general_complaint ("bad structure-type format");
2809 if (FIELD_BITPOS (fip->list->field) == 0
2810 && FIELD_BITSIZE (fip->list->field) == 0)
2812 /* This can happen in two cases: (1) at least for gcc 2.4.5 or so,
2813 it is a field which has been optimized out. The correct stab for
2814 this case is to use VISIBILITY_IGNORE, but that is a recent
2815 invention. (2) It is a 0-size array. For example
2816 union { int num; char str[0]; } foo. Printing _("<no value>" for
2817 str in "p foo" is OK, since foo.str (and thus foo.str[3])
2818 will continue to work, and a 0-size array as a whole doesn't
2819 have any contents to print.
2821 I suspect this probably could also happen with gcc -gstabs (not
2822 -gstabs+) for static fields, and perhaps other C++ extensions.
2823 Hopefully few people use -gstabs with gdb, since it is intended
2824 for dbx compatibility. */
2826 /* Ignore this field. */
2827 fip->list->visibility = VISIBILITY_IGNORE;
2831 /* Detect an unpacked field and mark it as such.
2832 dbx gives a bit size for all fields.
2833 Note that forward refs cannot be packed,
2834 and treat enums as if they had the width of ints. */
2836 struct type *field_type = check_typedef (FIELD_TYPE (fip->list->field));
2838 if (TYPE_CODE (field_type) != TYPE_CODE_INT
2839 && TYPE_CODE (field_type) != TYPE_CODE_RANGE
2840 && TYPE_CODE (field_type) != TYPE_CODE_BOOL
2841 && TYPE_CODE (field_type) != TYPE_CODE_ENUM)
2843 FIELD_BITSIZE (fip->list->field) = 0;
2845 if ((FIELD_BITSIZE (fip->list->field)
2846 == TARGET_CHAR_BIT * TYPE_LENGTH (field_type)
2847 || (TYPE_CODE (field_type) == TYPE_CODE_ENUM
2848 && FIELD_BITSIZE (fip->list->field)
2849 == gdbarch_int_bit (current_gdbarch))
2852 FIELD_BITPOS (fip->list->field) % 8 == 0)
2854 FIELD_BITSIZE (fip->list->field) = 0;
2860 /* Read struct or class data fields. They have the form:
2862 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2864 At the end, we see a semicolon instead of a field.
2866 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2869 The optional VISIBILITY is one of:
2871 '/0' (VISIBILITY_PRIVATE)
2872 '/1' (VISIBILITY_PROTECTED)
2873 '/2' (VISIBILITY_PUBLIC)
2874 '/9' (VISIBILITY_IGNORE)
2876 or nothing, for C style fields with public visibility.
2878 Returns 1 for success, 0 for failure. */
2881 read_struct_fields (struct field_info *fip, char **pp, struct type *type,
2882 struct objfile *objfile)
2885 struct nextfield *new;
2887 /* We better set p right now, in case there are no fields at all... */
2891 /* Read each data member type until we find the terminating ';' at the end of
2892 the data member list, or break for some other reason such as finding the
2893 start of the member function list. */
2894 /* Stab string for structure/union does not end with two ';' in
2895 SUN C compiler 5.3 i.e. F6U2, hence check for end of string. */
2897 while (**pp != ';' && **pp != '\0')
2899 STABS_CONTINUE (pp, objfile);
2900 /* Get space to record the next field's data. */
2901 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
2902 make_cleanup (xfree, new);
2903 memset (new, 0, sizeof (struct nextfield));
2904 new->next = fip->list;
2907 /* Get the field name. */
2910 /* If is starts with CPLUS_MARKER it is a special abbreviation,
2911 unless the CPLUS_MARKER is followed by an underscore, in
2912 which case it is just the name of an anonymous type, which we
2913 should handle like any other type name. */
2915 if (is_cplus_marker (p[0]) && p[1] != '_')
2917 if (!read_cpp_abbrev (fip, pp, type, objfile))
2922 /* Look for the ':' that separates the field name from the field
2923 values. Data members are delimited by a single ':', while member
2924 functions are delimited by a pair of ':'s. When we hit the member
2925 functions (if any), terminate scan loop and return. */
2927 while (*p != ':' && *p != '\0')
2934 /* Check to see if we have hit the member functions yet. */
2939 read_one_struct_field (fip, pp, p, type, objfile);
2941 if (p[0] == ':' && p[1] == ':')
2943 /* (the deleted) chill the list of fields: the last entry (at
2944 the head) is a partially constructed entry which we now
2946 fip->list = fip->list->next;
2951 /* The stabs for C++ derived classes contain baseclass information which
2952 is marked by a '!' character after the total size. This function is
2953 called when we encounter the baseclass marker, and slurps up all the
2954 baseclass information.
2956 Immediately following the '!' marker is the number of base classes that
2957 the class is derived from, followed by information for each base class.
2958 For each base class, there are two visibility specifiers, a bit offset
2959 to the base class information within the derived class, a reference to
2960 the type for the base class, and a terminating semicolon.
2962 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2964 Baseclass information marker __________________|| | | | | | |
2965 Number of baseclasses __________________________| | | | | | |
2966 Visibility specifiers (2) ________________________| | | | | |
2967 Offset in bits from start of class _________________| | | | |
2968 Type number for base class ___________________________| | | |
2969 Visibility specifiers (2) _______________________________| | |
2970 Offset in bits from start of class ________________________| |
2971 Type number of base class ____________________________________|
2973 Return 1 for success, 0 for (error-type-inducing) failure. */
2979 read_baseclasses (struct field_info *fip, char **pp, struct type *type,
2980 struct objfile *objfile)
2983 struct nextfield *new;
2991 /* Skip the '!' baseclass information marker. */
2995 ALLOCATE_CPLUS_STRUCT_TYPE (type);
2998 TYPE_N_BASECLASSES (type) = read_huge_number (pp, ',', &nbits, 0);
3004 /* Some stupid compilers have trouble with the following, so break
3005 it up into simpler expressions. */
3006 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *)
3007 TYPE_ALLOC (type, B_BYTES (TYPE_N_BASECLASSES (type)));
3010 int num_bytes = B_BYTES (TYPE_N_BASECLASSES (type));
3013 pointer = (char *) TYPE_ALLOC (type, num_bytes);
3014 TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer;
3018 B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), TYPE_N_BASECLASSES (type));
3020 for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
3022 new = (struct nextfield *) xmalloc (sizeof (struct nextfield));
3023 make_cleanup (xfree, new);
3024 memset (new, 0, sizeof (struct nextfield));
3025 new->next = fip->list;
3027 FIELD_BITSIZE (new->field) = 0; /* this should be an unpacked field! */
3029 STABS_CONTINUE (pp, objfile);
3033 /* Nothing to do. */
3036 SET_TYPE_FIELD_VIRTUAL (type, i);
3039 /* Unknown character. Complain and treat it as non-virtual. */
3041 complaint (&symfile_complaints,
3042 _("Unknown virtual character `%c' for baseclass"), **pp);
3047 new->visibility = *(*pp)++;
3048 switch (new->visibility)
3050 case VISIBILITY_PRIVATE:
3051 case VISIBILITY_PROTECTED:
3052 case VISIBILITY_PUBLIC:
3055 /* Bad visibility format. Complain and treat it as
3058 complaint (&symfile_complaints,
3059 _("Unknown visibility `%c' for baseclass"),
3061 new->visibility = VISIBILITY_PUBLIC;
3068 /* The remaining value is the bit offset of the portion of the object
3069 corresponding to this baseclass. Always zero in the absence of
3070 multiple inheritance. */
3072 FIELD_BITPOS (new->field) = read_huge_number (pp, ',', &nbits, 0);
3077 /* The last piece of baseclass information is the type of the
3078 base class. Read it, and remember it's type name as this
3081 new->field.type = read_type (pp, objfile);
3082 new->field.name = type_name_no_tag (new->field.type);
3084 /* skip trailing ';' and bump count of number of fields seen */
3093 /* The tail end of stabs for C++ classes that contain a virtual function
3094 pointer contains a tilde, a %, and a type number.
3095 The type number refers to the base class (possibly this class itself) which
3096 contains the vtable pointer for the current class.
3098 This function is called when we have parsed all the method declarations,
3099 so we can look for the vptr base class info. */
3102 read_tilde_fields (struct field_info *fip, char **pp, struct type *type,
3103 struct objfile *objfile)
3107 STABS_CONTINUE (pp, objfile);
3109 /* If we are positioned at a ';', then skip it. */
3119 if (**pp == '=' || **pp == '+' || **pp == '-')
3121 /* Obsolete flags that used to indicate the presence
3122 of constructors and/or destructors. */
3126 /* Read either a '%' or the final ';'. */
3127 if (*(*pp)++ == '%')
3129 /* The next number is the type number of the base class
3130 (possibly our own class) which supplies the vtable for
3131 this class. Parse it out, and search that class to find
3132 its vtable pointer, and install those into TYPE_VPTR_BASETYPE
3133 and TYPE_VPTR_FIELDNO. */
3138 t = read_type (pp, objfile);
3140 while (*p != '\0' && *p != ';')
3146 /* Premature end of symbol. */
3150 TYPE_VPTR_BASETYPE (type) = t;
3151 if (type == t) /* Our own class provides vtbl ptr */
3153 for (i = TYPE_NFIELDS (t) - 1;
3154 i >= TYPE_N_BASECLASSES (t);
3157 char *name = TYPE_FIELD_NAME (t, i);
3158 if (!strncmp (name, vptr_name, sizeof (vptr_name) - 2)
3159 && is_cplus_marker (name[sizeof (vptr_name) - 2]))
3161 TYPE_VPTR_FIELDNO (type) = i;
3165 /* Virtual function table field not found. */
3166 complaint (&symfile_complaints,
3167 _("virtual function table pointer not found when defining class `%s'"),
3173 TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t);
3184 attach_fn_fields_to_type (struct field_info *fip, struct type *type)
3188 for (n = TYPE_NFN_FIELDS (type);
3189 fip->fnlist != NULL;
3190 fip->fnlist = fip->fnlist->next)
3192 --n; /* Circumvent Sun3 compiler bug */
3193 TYPE_FN_FIELDLISTS (type)[n] = fip->fnlist->fn_fieldlist;
3198 /* Create the vector of fields, and record how big it is.
3199 We need this info to record proper virtual function table information
3200 for this class's virtual functions. */
3203 attach_fields_to_type (struct field_info *fip, struct type *type,
3204 struct objfile *objfile)
3207 int non_public_fields = 0;
3208 struct nextfield *scan;
3210 /* Count up the number of fields that we have, as well as taking note of
3211 whether or not there are any non-public fields, which requires us to
3212 allocate and build the private_field_bits and protected_field_bits
3215 for (scan = fip->list; scan != NULL; scan = scan->next)
3218 if (scan->visibility != VISIBILITY_PUBLIC)
3220 non_public_fields++;
3224 /* Now we know how many fields there are, and whether or not there are any
3225 non-public fields. Record the field count, allocate space for the
3226 array of fields, and create blank visibility bitfields if necessary. */
3228 TYPE_NFIELDS (type) = nfields;
3229 TYPE_FIELDS (type) = (struct field *)
3230 TYPE_ALLOC (type, sizeof (struct field) * nfields);
3231 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields);
3233 if (non_public_fields)
3235 ALLOCATE_CPLUS_STRUCT_TYPE (type);
3237 TYPE_FIELD_PRIVATE_BITS (type) =
3238 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
3239 B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields);
3241 TYPE_FIELD_PROTECTED_BITS (type) =
3242 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
3243 B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields);
3245 TYPE_FIELD_IGNORE_BITS (type) =
3246 (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields));
3247 B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields);
3250 /* Copy the saved-up fields into the field vector. Start from the head
3251 of the list, adding to the tail of the field array, so that they end
3252 up in the same order in the array in which they were added to the list. */
3254 while (nfields-- > 0)
3256 TYPE_FIELD (type, nfields) = fip->list->field;
3257 switch (fip->list->visibility)
3259 case VISIBILITY_PRIVATE:
3260 SET_TYPE_FIELD_PRIVATE (type, nfields);
3263 case VISIBILITY_PROTECTED:
3264 SET_TYPE_FIELD_PROTECTED (type, nfields);
3267 case VISIBILITY_IGNORE:
3268 SET_TYPE_FIELD_IGNORE (type, nfields);
3271 case VISIBILITY_PUBLIC:
3275 /* Unknown visibility. Complain and treat it as public. */
3277 complaint (&symfile_complaints, _("Unknown visibility `%c' for field"),
3278 fip->list->visibility);
3282 fip->list = fip->list->next;
3288 /* Complain that the compiler has emitted more than one definition for the
3289 structure type TYPE. */
3291 complain_about_struct_wipeout (struct type *type)
3296 if (TYPE_TAG_NAME (type))
3298 name = TYPE_TAG_NAME (type);
3299 switch (TYPE_CODE (type))
3301 case TYPE_CODE_STRUCT: kind = "struct "; break;
3302 case TYPE_CODE_UNION: kind = "union "; break;
3303 case TYPE_CODE_ENUM: kind = "enum "; break;
3307 else if (TYPE_NAME (type))
3309 name = TYPE_NAME (type);
3318 complaint (&symfile_complaints,
3319 _("struct/union type gets multiply defined: %s%s"), kind, name);
3323 /* Read the description of a structure (or union type) and return an object
3324 describing the type.
3326 PP points to a character pointer that points to the next unconsumed token
3327 in the the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
3328 *PP will point to "4a:1,0,32;;".
3330 TYPE points to an incomplete type that needs to be filled in.
3332 OBJFILE points to the current objfile from which the stabs information is
3333 being read. (Note that it is redundant in that TYPE also contains a pointer
3334 to this same objfile, so it might be a good idea to eliminate it. FIXME).
3337 static struct type *
3338 read_struct_type (char **pp, struct type *type, enum type_code type_code,
3339 struct objfile *objfile)
3341 struct cleanup *back_to;
3342 struct field_info fi;
3347 /* When describing struct/union/class types in stabs, G++ always drops
3348 all qualifications from the name. So if you've got:
3349 struct A { ... struct B { ... }; ... };
3350 then G++ will emit stabs for `struct A::B' that call it simply
3351 `struct B'. Obviously, if you've got a real top-level definition for
3352 `struct B', or other nested definitions, this is going to cause
3355 Obviously, GDB can't fix this by itself, but it can at least avoid
3356 scribbling on existing structure type objects when new definitions
3358 if (! (TYPE_CODE (type) == TYPE_CODE_UNDEF
3359 || TYPE_STUB (type)))
3361 complain_about_struct_wipeout (type);
3363 /* It's probably best to return the type unchanged. */
3367 back_to = make_cleanup (null_cleanup, 0);
3369 INIT_CPLUS_SPECIFIC (type);
3370 TYPE_CODE (type) = type_code;
3371 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
3373 /* First comes the total size in bytes. */
3377 TYPE_LENGTH (type) = read_huge_number (pp, 0, &nbits, 0);
3379 return error_type (pp, objfile);
3382 /* Now read the baseclasses, if any, read the regular C struct or C++
3383 class member fields, attach the fields to the type, read the C++
3384 member functions, attach them to the type, and then read any tilde
3385 field (baseclass specifier for the class holding the main vtable). */
3387 if (!read_baseclasses (&fi, pp, type, objfile)
3388 || !read_struct_fields (&fi, pp, type, objfile)
3389 || !attach_fields_to_type (&fi, type, objfile)
3390 || !read_member_functions (&fi, pp, type, objfile)
3391 || !attach_fn_fields_to_type (&fi, type)
3392 || !read_tilde_fields (&fi, pp, type, objfile))
3394 type = error_type (pp, objfile);
3397 do_cleanups (back_to);
3401 /* Read a definition of an array type,
3402 and create and return a suitable type object.
3403 Also creates a range type which represents the bounds of that
3406 static struct type *
3407 read_array_type (char **pp, struct type *type,
3408 struct objfile *objfile)
3410 struct type *index_type, *element_type, *range_type;
3415 /* Format of an array type:
3416 "ar<index type>;lower;upper;<array_contents_type>".
3417 OS9000: "arlower,upper;<array_contents_type>".
3419 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
3420 for these, produce a type like float[][]. */
3423 index_type = read_type (pp, objfile);
3425 /* Improper format of array type decl. */
3426 return error_type (pp, objfile);
3430 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
3435 lower = read_huge_number (pp, ';', &nbits, 0);
3438 return error_type (pp, objfile);
3440 if (!(**pp >= '0' && **pp <= '9') && **pp != '-')
3445 upper = read_huge_number (pp, ';', &nbits, 0);
3447 return error_type (pp, objfile);
3449 element_type = read_type (pp, objfile);
3458 create_range_type ((struct type *) NULL, index_type, lower, upper);
3459 type = create_array_type (type, element_type, range_type);
3465 /* Read a definition of an enumeration type,
3466 and create and return a suitable type object.
3467 Also defines the symbols that represent the values of the type. */
3469 static struct type *
3470 read_enum_type (char **pp, struct type *type,
3471 struct objfile *objfile)
3478 struct pending **symlist;
3479 struct pending *osyms, *syms;
3482 int unsigned_enum = 1;
3485 /* FIXME! The stabs produced by Sun CC merrily define things that ought
3486 to be file-scope, between N_FN entries, using N_LSYM. What's a mother
3487 to do? For now, force all enum values to file scope. */
3488 if (within_function)
3489 symlist = &local_symbols;
3492 symlist = &file_symbols;
3494 o_nsyms = osyms ? osyms->nsyms : 0;
3496 /* The aix4 compiler emits an extra field before the enum members;
3497 my guess is it's a type of some sort. Just ignore it. */
3500 /* Skip over the type. */
3504 /* Skip over the colon. */
3508 /* Read the value-names and their values.
3509 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
3510 A semicolon or comma instead of a NAME means the end. */
3511 while (**pp && **pp != ';' && **pp != ',')
3513 STABS_CONTINUE (pp, objfile);
3517 name = obsavestring (*pp, p - *pp, &objfile->objfile_obstack);
3519 n = read_huge_number (pp, ',', &nbits, 0);
3521 return error_type (pp, objfile);
3523 sym = (struct symbol *)
3524 obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
3525 memset (sym, 0, sizeof (struct symbol));
3526 DEPRECATED_SYMBOL_NAME (sym) = name;
3527 SYMBOL_LANGUAGE (sym) = current_subfile->language;
3528 SYMBOL_CLASS (sym) = LOC_CONST;
3529 SYMBOL_DOMAIN (sym) = VAR_DOMAIN;
3530 SYMBOL_VALUE (sym) = n;
3533 add_symbol_to_list (sym, symlist);
3538 (*pp)++; /* Skip the semicolon. */
3540 /* Now fill in the fields of the type-structure. */
3542 TYPE_LENGTH (type) = gdbarch_int_bit (current_gdbarch) / HOST_CHAR_BIT;
3543 TYPE_CODE (type) = TYPE_CODE_ENUM;
3544 TYPE_FLAGS (type) &= ~TYPE_FLAG_STUB;
3546 TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
3547 TYPE_NFIELDS (type) = nsyms;
3548 TYPE_FIELDS (type) = (struct field *)
3549 TYPE_ALLOC (type, sizeof (struct field) * nsyms);
3550 memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nsyms);
3552 /* Find the symbols for the values and put them into the type.
3553 The symbols can be found in the symlist that we put them on
3554 to cause them to be defined. osyms contains the old value
3555 of that symlist; everything up to there was defined by us. */
3556 /* Note that we preserve the order of the enum constants, so
3557 that in something like "enum {FOO, LAST_THING=FOO}" we print
3558 FOO, not LAST_THING. */
3560 for (syms = *symlist, n = nsyms - 1; syms; syms = syms->next)
3562 int last = syms == osyms ? o_nsyms : 0;
3563 int j = syms->nsyms;
3564 for (; --j >= last; --n)
3566 struct symbol *xsym = syms->symbol[j];
3567 SYMBOL_TYPE (xsym) = type;
3568 TYPE_FIELD_NAME (type, n) = DEPRECATED_SYMBOL_NAME (xsym);
3569 TYPE_FIELD_BITPOS (type, n) = SYMBOL_VALUE (xsym);
3570 TYPE_FIELD_BITSIZE (type, n) = 0;
3579 /* Sun's ACC uses a somewhat saner method for specifying the builtin
3580 typedefs in every file (for int, long, etc):
3582 type = b <signed> <width> <format type>; <offset>; <nbits>
3584 optional format type = c or b for char or boolean.
3585 offset = offset from high order bit to start bit of type.
3586 width is # bytes in object of this type, nbits is # bits in type.
3588 The width/offset stuff appears to be for small objects stored in
3589 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
3592 static struct type *
3593 read_sun_builtin_type (char **pp, int typenums[2], struct objfile *objfile)
3598 enum type_code code = TYPE_CODE_INT;
3609 return error_type (pp, objfile);
3613 /* For some odd reason, all forms of char put a c here. This is strange
3614 because no other type has this honor. We can safely ignore this because
3615 we actually determine 'char'acterness by the number of bits specified in
3617 Boolean forms, e.g Fortran logical*X, put a b here. */
3621 else if (**pp == 'b')
3623 code = TYPE_CODE_BOOL;
3627 /* The first number appears to be the number of bytes occupied
3628 by this type, except that unsigned short is 4 instead of 2.
3629 Since this information is redundant with the third number,
3630 we will ignore it. */
3631 read_huge_number (pp, ';', &nbits, 0);
3633 return error_type (pp, objfile);
3635 /* The second number is always 0, so ignore it too. */
3636 read_huge_number (pp, ';', &nbits, 0);
3638 return error_type (pp, objfile);
3640 /* The third number is the number of bits for this type. */
3641 type_bits = read_huge_number (pp, 0, &nbits, 0);
3643 return error_type (pp, objfile);
3644 /* The type *should* end with a semicolon. If it are embedded
3645 in a larger type the semicolon may be the only way to know where
3646 the type ends. If this type is at the end of the stabstring we
3647 can deal with the omitted semicolon (but we don't have to like
3648 it). Don't bother to complain(), Sun's compiler omits the semicolon
3654 return init_type (TYPE_CODE_VOID, 1,
3655 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
3658 return init_type (code,
3659 type_bits / TARGET_CHAR_BIT,
3660 signed_type ? 0 : TYPE_FLAG_UNSIGNED, (char *) NULL,
3664 static struct type *
3665 read_sun_floating_type (char **pp, int typenums[2], struct objfile *objfile)
3670 struct type *rettype;
3672 /* The first number has more details about the type, for example
3674 details = read_huge_number (pp, ';', &nbits, 0);
3676 return error_type (pp, objfile);
3678 /* The second number is the number of bytes occupied by this type */
3679 nbytes = read_huge_number (pp, ';', &nbits, 0);
3681 return error_type (pp, objfile);
3683 if (details == NF_COMPLEX || details == NF_COMPLEX16
3684 || details == NF_COMPLEX32)
3686 rettype = init_type (TYPE_CODE_COMPLEX, nbytes, 0, NULL, objfile);
3687 TYPE_TARGET_TYPE (rettype)
3688 = init_type (TYPE_CODE_FLT, nbytes / 2, 0, NULL, objfile);
3692 return init_type (TYPE_CODE_FLT, nbytes, 0, NULL, objfile);
3695 /* Read a number from the string pointed to by *PP.
3696 The value of *PP is advanced over the number.
3697 If END is nonzero, the character that ends the
3698 number must match END, or an error happens;
3699 and that character is skipped if it does match.
3700 If END is zero, *PP is left pointing to that character.
3702 If TWOS_COMPLEMENT_BITS is set to a strictly positive value and if
3703 the number is represented in an octal representation, assume that
3704 it is represented in a 2's complement representation with a size of
3705 TWOS_COMPLEMENT_BITS.
3707 If the number fits in a long, set *BITS to 0 and return the value.
3708 If not, set *BITS to be the number of bits in the number and return 0.
3710 If encounter garbage, set *BITS to -1 and return 0. */
3713 read_huge_number (char **pp, int end, int *bits, int twos_complement_bits)
3725 int twos_complement_representation = radix == 8 && twos_complement_bits > 0;
3733 /* Leading zero means octal. GCC uses this to output values larger
3734 than an int (because that would be hard in decimal). */
3741 upper_limit = LONG_MAX / radix;
3743 while ((c = *p++) >= '0' && c < ('0' + radix))
3745 if (n <= upper_limit)
3747 if (twos_complement_representation)
3749 /* Octal, signed, twos complement representation. In this case,
3750 sn is the signed value, n is the corresponding absolute
3751 value. signed_bit is the position of the sign bit in the
3752 first three bits. */
3755 sign_bit = (twos_complement_bits % 3 + 2) % 3;
3756 sn = c - '0' - ((2 * (c - '0')) | (2 << sign_bit));
3769 /* unsigned representation */
3771 n += c - '0'; /* FIXME this overflows anyway */
3777 /* This depends on large values being output in octal, which is
3784 /* Ignore leading zeroes. */
3788 else if (c == '2' || c == '3')
3814 /* Large decimal constants are an error (because it is hard to
3815 count how many bits are in them). */
3821 /* -0x7f is the same as 0x80. So deal with it by adding one to
3822 the number of bits. */
3832 if (twos_complement_representation)
3837 /* It's *BITS which has the interesting information. */
3841 static struct type *
3842 read_range_type (char **pp, int typenums[2], int type_size,
3843 struct objfile *objfile)
3845 char *orig_pp = *pp;
3850 struct type *result_type;
3851 struct type *index_type = NULL;
3853 /* First comes a type we are a subrange of.
3854 In C it is usually 0, 1 or the type being defined. */
3855 if (read_type_number (pp, rangenums) != 0)
3856 return error_type (pp, objfile);
3857 self_subrange = (rangenums[0] == typenums[0] &&
3858 rangenums[1] == typenums[1]);
3863 index_type = read_type (pp, objfile);
3866 /* A semicolon should now follow; skip it. */
3870 /* The remaining two operands are usually lower and upper bounds
3871 of the range. But in some special cases they mean something else. */
3872 n2 = read_huge_number (pp, ';', &n2bits, type_size);
3873 n3 = read_huge_number (pp, ';', &n3bits, type_size);
3875 if (n2bits == -1 || n3bits == -1)
3876 return error_type (pp, objfile);
3879 goto handle_true_range;
3881 /* If limits are huge, must be large integral type. */
3882 if (n2bits != 0 || n3bits != 0)
3884 char got_signed = 0;
3885 char got_unsigned = 0;
3886 /* Number of bits in the type. */
3889 /* If a type size attribute has been specified, the bounds of
3890 the range should fit in this size. If the lower bounds needs
3891 more bits than the upper bound, then the type is signed. */
3892 if (n2bits <= type_size && n3bits <= type_size)
3894 if (n2bits == type_size && n2bits > n3bits)
3900 /* Range from 0 to <large number> is an unsigned large integral type. */
3901 else if ((n2bits == 0 && n2 == 0) && n3bits != 0)
3906 /* Range from <large number> to <large number>-1 is a large signed
3907 integral type. Take care of the case where <large number> doesn't
3908 fit in a long but <large number>-1 does. */
3909 else if ((n2bits != 0 && n3bits != 0 && n2bits == n3bits + 1)
3910 || (n2bits != 0 && n3bits == 0
3911 && (n2bits == sizeof (long) * HOST_CHAR_BIT)
3918 if (got_signed || got_unsigned)
3920 return init_type (TYPE_CODE_INT, nbits / TARGET_CHAR_BIT,
3921 got_unsigned ? TYPE_FLAG_UNSIGNED : 0, NULL,
3925 return error_type (pp, objfile);
3928 /* A type defined as a subrange of itself, with bounds both 0, is void. */
3929 if (self_subrange && n2 == 0 && n3 == 0)
3930 return init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile);
3932 /* If n3 is zero and n2 is positive, we want a floating type, and n2
3933 is the width in bytes.
3935 Fortran programs appear to use this for complex types also. To
3936 distinguish between floats and complex, g77 (and others?) seem
3937 to use self-subranges for the complexes, and subranges of int for
3940 Also note that for complexes, g77 sets n2 to the size of one of
3941 the member floats, not the whole complex beast. My guess is that
3942 this was to work well with pre-COMPLEX versions of gdb. */
3944 if (n3 == 0 && n2 > 0)
3946 struct type *float_type
3947 = init_type (TYPE_CODE_FLT, n2, 0, NULL, objfile);
3951 struct type *complex_type =
3952 init_type (TYPE_CODE_COMPLEX, 2 * n2, 0, NULL, objfile);
3953 TYPE_TARGET_TYPE (complex_type) = float_type;
3954 return complex_type;
3960 /* If the upper bound is -1, it must really be an unsigned int. */
3962 else if (n2 == 0 && n3 == -1)
3964 /* It is unsigned int or unsigned long. */
3965 /* GCC 2.3.3 uses this for long long too, but that is just a GDB 3.5
3966 compatibility hack. */
3967 return init_type (TYPE_CODE_INT,
3968 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
3969 TYPE_FLAG_UNSIGNED, NULL, objfile);
3972 /* Special case: char is defined (Who knows why) as a subrange of
3973 itself with range 0-127. */
3974 else if (self_subrange && n2 == 0 && n3 == 127)
3975 return init_type (TYPE_CODE_INT, 1, TYPE_FLAG_NOSIGN, NULL, objfile);
3977 /* We used to do this only for subrange of self or subrange of int. */
3980 /* -1 is used for the upper bound of (4 byte) "unsigned int" and
3981 "unsigned long", and we already checked for that,
3982 so don't need to test for it here. */
3985 /* n3 actually gives the size. */
3986 return init_type (TYPE_CODE_INT, -n3, TYPE_FLAG_UNSIGNED,
3989 /* Is n3 == 2**(8n)-1 for some integer n? Then it's an
3990 unsigned n-byte integer. But do require n to be a power of
3991 two; we don't want 3- and 5-byte integers flying around. */
3997 for (bytes = 0; (bits & 0xff) == 0xff; bytes++)
4000 && ((bytes - 1) & bytes) == 0) /* "bytes is a power of two" */
4001 return init_type (TYPE_CODE_INT, bytes, TYPE_FLAG_UNSIGNED, NULL,
4005 /* I think this is for Convex "long long". Since I don't know whether
4006 Convex sets self_subrange, I also accept that particular size regardless
4007 of self_subrange. */
4008 else if (n3 == 0 && n2 < 0
4010 || n2 == -gdbarch_long_long_bit
4011 (current_gdbarch) / TARGET_CHAR_BIT))
4012 return init_type (TYPE_CODE_INT, -n2, 0, NULL, objfile);
4013 else if (n2 == -n3 - 1)
4016 return init_type (TYPE_CODE_INT, 1, 0, NULL, objfile);
4018 return init_type (TYPE_CODE_INT, 2, 0, NULL, objfile);
4019 if (n3 == 0x7fffffff)
4020 return init_type (TYPE_CODE_INT, 4, 0, NULL, objfile);
4023 /* We have a real range type on our hands. Allocate space and
4024 return a real pointer. */
4028 index_type = builtin_type_int;
4030 index_type = *dbx_lookup_type (rangenums);
4031 if (index_type == NULL)
4033 /* Does this actually ever happen? Is that why we are worrying
4034 about dealing with it rather than just calling error_type? */
4036 static struct type *range_type_index;
4038 complaint (&symfile_complaints,
4039 _("base type %d of range type is not defined"), rangenums[1]);
4040 if (range_type_index == NULL)
4042 init_type (TYPE_CODE_INT,
4043 gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
4044 0, "range type index type", NULL);
4045 index_type = range_type_index;
4048 result_type = create_range_type ((struct type *) NULL, index_type, n2, n3);
4049 return (result_type);
4052 /* Read in an argument list. This is a list of types, separated by commas
4053 and terminated with END. Return the list of types read in, or NULL
4054 if there is an error. */
4056 static struct field *
4057 read_args (char **pp, int end, struct objfile *objfile, int *nargsp,
4060 /* FIXME! Remove this arbitrary limit! */
4061 struct type *types[1024]; /* allow for fns of 1023 parameters */
4068 /* Invalid argument list: no ','. */
4071 STABS_CONTINUE (pp, objfile);
4072 types[n++] = read_type (pp, objfile);
4074 (*pp)++; /* get past `end' (the ':' character) */
4076 if (TYPE_CODE (types[n - 1]) != TYPE_CODE_VOID)
4084 rval = (struct field *) xmalloc (n * sizeof (struct field));
4085 memset (rval, 0, n * sizeof (struct field));
4086 for (i = 0; i < n; i++)
4087 rval[i].type = types[i];
4092 /* Common block handling. */
4094 /* List of symbols declared since the last BCOMM. This list is a tail
4095 of local_symbols. When ECOMM is seen, the symbols on the list
4096 are noted so their proper addresses can be filled in later,
4097 using the common block base address gotten from the assembler
4100 static struct pending *common_block;
4101 static int common_block_i;
4103 /* Name of the current common block. We get it from the BCOMM instead of the
4104 ECOMM to match IBM documentation (even though IBM puts the name both places
4105 like everyone else). */
4106 static char *common_block_name;
4108 /* Process a N_BCOMM symbol. The storage for NAME is not guaranteed
4109 to remain after this function returns. */
4112 common_block_start (char *name, struct objfile *objfile)
4114 if (common_block_name != NULL)
4116 complaint (&symfile_complaints,
4117 _("Invalid symbol data: common block within common block"));
4119 common_block = local_symbols;
4120 common_block_i = local_symbols ? local_symbols->nsyms : 0;
4121 common_block_name = obsavestring (name, strlen (name),
4122 &objfile->objfile_obstack);
4125 /* Process a N_ECOMM symbol. */
4128 common_block_end (struct objfile *objfile)
4130 /* Symbols declared since the BCOMM are to have the common block
4131 start address added in when we know it. common_block and
4132 common_block_i point to the first symbol after the BCOMM in
4133 the local_symbols list; copy the list and hang it off the
4134 symbol for the common block name for later fixup. */
4137 struct pending *new = 0;
4138 struct pending *next;
4141 if (common_block_name == NULL)
4143 complaint (&symfile_complaints, _("ECOMM symbol unmatched by BCOMM"));
4147 sym = (struct symbol *)
4148 obstack_alloc (&objfile->objfile_obstack, sizeof (struct symbol));
4149 memset (sym, 0, sizeof (struct symbol));
4150 /* Note: common_block_name already saved on objfile_obstack */
4151 DEPRECATED_SYMBOL_NAME (sym) = common_block_name;
4152 SYMBOL_CLASS (sym) = LOC_BLOCK;
4154 /* Now we copy all the symbols which have been defined since the BCOMM. */
4156 /* Copy all the struct pendings before common_block. */
4157 for (next = local_symbols;
4158 next != NULL && next != common_block;
4161 for (j = 0; j < next->nsyms; j++)
4162 add_symbol_to_list (next->symbol[j], &new);
4165 /* Copy however much of COMMON_BLOCK we need. If COMMON_BLOCK is
4166 NULL, it means copy all the local symbols (which we already did
4169 if (common_block != NULL)
4170 for (j = common_block_i; j < common_block->nsyms; j++)
4171 add_symbol_to_list (common_block->symbol[j], &new);
4173 SYMBOL_TYPE (sym) = (struct type *) new;
4175 /* Should we be putting local_symbols back to what it was?
4178 i = hashname (DEPRECATED_SYMBOL_NAME (sym));
4179 SYMBOL_VALUE_CHAIN (sym) = global_sym_chain[i];
4180 global_sym_chain[i] = sym;
4181 common_block_name = NULL;
4184 /* Add a common block's start address to the offset of each symbol
4185 declared to be in it (by being between a BCOMM/ECOMM pair that uses
4186 the common block name). */
4189 fix_common_block (struct symbol *sym, int valu)
4191 struct pending *next = (struct pending *) SYMBOL_TYPE (sym);
4192 for (; next; next = next->next)
4195 for (j = next->nsyms - 1; j >= 0; j--)
4196 SYMBOL_VALUE_ADDRESS (next->symbol[j]) += valu;
4202 /* Add {TYPE, TYPENUMS} to the NONAME_UNDEFS vector.
4203 See add_undefined_type for more details. */
4206 add_undefined_type_noname (struct type *type, int typenums[2])
4210 nat.typenums[0] = typenums [0];
4211 nat.typenums[1] = typenums [1];
4214 if (noname_undefs_length == noname_undefs_allocated)
4216 noname_undefs_allocated *= 2;
4217 noname_undefs = (struct nat *)
4218 xrealloc ((char *) noname_undefs,
4219 noname_undefs_allocated * sizeof (struct nat));
4221 noname_undefs[noname_undefs_length++] = nat;
4224 /* Add TYPE to the UNDEF_TYPES vector.
4225 See add_undefined_type for more details. */
4228 add_undefined_type_1 (struct type *type)
4230 if (undef_types_length == undef_types_allocated)
4232 undef_types_allocated *= 2;
4233 undef_types = (struct type **)
4234 xrealloc ((char *) undef_types,
4235 undef_types_allocated * sizeof (struct type *));
4237 undef_types[undef_types_length++] = type;
4240 /* What about types defined as forward references inside of a small lexical
4242 /* Add a type to the list of undefined types to be checked through
4243 once this file has been read in.
4245 In practice, we actually maintain two such lists: The first list
4246 (UNDEF_TYPES) is used for types whose name has been provided, and
4247 concerns forward references (eg 'xs' or 'xu' forward references);
4248 the second list (NONAME_UNDEFS) is used for types whose name is
4249 unknown at creation time, because they were referenced through
4250 their type number before the actual type was declared.
4251 This function actually adds the given type to the proper list. */
4254 add_undefined_type (struct type *type, int typenums[2])
4256 if (TYPE_TAG_NAME (type) == NULL)
4257 add_undefined_type_noname (type, typenums);
4259 add_undefined_type_1 (type);
4262 /* Try to fix all undefined types pushed on the UNDEF_TYPES vector. */
4265 cleanup_undefined_types_noname (void)
4269 for (i = 0; i < noname_undefs_length; i++)
4271 struct nat nat = noname_undefs[i];
4274 type = dbx_lookup_type (nat.typenums);
4275 if (nat.type != *type && TYPE_CODE (*type) != TYPE_CODE_UNDEF)
4276 replace_type (nat.type, *type);
4279 noname_undefs_length = 0;
4282 /* Go through each undefined type, see if it's still undefined, and fix it
4283 up if possible. We have two kinds of undefined types:
4285 TYPE_CODE_ARRAY: Array whose target type wasn't defined yet.
4286 Fix: update array length using the element bounds
4287 and the target type's length.
4288 TYPE_CODE_STRUCT, TYPE_CODE_UNION: Structure whose fields were not
4289 yet defined at the time a pointer to it was made.
4290 Fix: Do a full lookup on the struct/union tag. */
4293 cleanup_undefined_types_1 (void)
4297 for (type = undef_types; type < undef_types + undef_types_length; type++)
4299 switch (TYPE_CODE (*type))
4302 case TYPE_CODE_STRUCT:
4303 case TYPE_CODE_UNION:
4304 case TYPE_CODE_ENUM:
4306 /* Check if it has been defined since. Need to do this here
4307 as well as in check_typedef to deal with the (legitimate in
4308 C though not C++) case of several types with the same name
4309 in different source files. */
4310 if (TYPE_STUB (*type))
4312 struct pending *ppt;
4314 /* Name of the type, without "struct" or "union" */
4315 char *typename = TYPE_TAG_NAME (*type);
4317 if (typename == NULL)
4319 complaint (&symfile_complaints, _("need a type name"));
4322 for (ppt = file_symbols; ppt; ppt = ppt->next)
4324 for (i = 0; i < ppt->nsyms; i++)
4326 struct symbol *sym = ppt->symbol[i];
4328 if (SYMBOL_CLASS (sym) == LOC_TYPEDEF
4329 && SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN
4330 && (TYPE_CODE (SYMBOL_TYPE (sym)) ==
4332 && strcmp (DEPRECATED_SYMBOL_NAME (sym), typename) == 0)
4333 replace_type (*type, SYMBOL_TYPE (sym));
4342 complaint (&symfile_complaints,
4343 _("forward-referenced types left unresolved, "
4351 undef_types_length = 0;
4354 /* Try to fix all the undefined types we ecountered while processing
4358 cleanup_undefined_types (void)
4360 cleanup_undefined_types_1 ();
4361 cleanup_undefined_types_noname ();
4364 /* Scan through all of the global symbols defined in the object file,
4365 assigning values to the debugging symbols that need to be assigned
4366 to. Get these symbols from the minimal symbol table. */
4369 scan_file_globals (struct objfile *objfile)
4372 struct minimal_symbol *msymbol;
4373 struct symbol *sym, *prev;
4374 struct objfile *resolve_objfile;
4376 /* SVR4 based linkers copy referenced global symbols from shared
4377 libraries to the main executable.
4378 If we are scanning the symbols for a shared library, try to resolve
4379 them from the minimal symbols of the main executable first. */
4381 if (symfile_objfile && objfile != symfile_objfile)
4382 resolve_objfile = symfile_objfile;
4384 resolve_objfile = objfile;
4388 /* Avoid expensive loop through all minimal symbols if there are
4389 no unresolved symbols. */
4390 for (hash = 0; hash < HASHSIZE; hash++)
4392 if (global_sym_chain[hash])
4395 if (hash >= HASHSIZE)
4398 for (msymbol = resolve_objfile->msymbols;
4399 msymbol && DEPRECATED_SYMBOL_NAME (msymbol) != NULL;
4404 /* Skip static symbols. */
4405 switch (MSYMBOL_TYPE (msymbol))
4417 /* Get the hash index and check all the symbols
4418 under that hash index. */
4420 hash = hashname (DEPRECATED_SYMBOL_NAME (msymbol));
4422 for (sym = global_sym_chain[hash]; sym;)
4424 if (DEPRECATED_SYMBOL_NAME (msymbol)[0] == DEPRECATED_SYMBOL_NAME (sym)[0] &&
4425 strcmp (DEPRECATED_SYMBOL_NAME (msymbol) + 1, DEPRECATED_SYMBOL_NAME (sym) + 1) == 0)
4427 /* Splice this symbol out of the hash chain and
4428 assign the value we have to it. */
4431 SYMBOL_VALUE_CHAIN (prev) = SYMBOL_VALUE_CHAIN (sym);
4435 global_sym_chain[hash] = SYMBOL_VALUE_CHAIN (sym);
4438 /* Check to see whether we need to fix up a common block. */
4439 /* Note: this code might be executed several times for
4440 the same symbol if there are multiple references. */
4443 if (SYMBOL_CLASS (sym) == LOC_BLOCK)
4445 fix_common_block (sym,
4446 SYMBOL_VALUE_ADDRESS (msymbol));
4450 SYMBOL_VALUE_ADDRESS (sym)
4451 = SYMBOL_VALUE_ADDRESS (msymbol);
4453 SYMBOL_SECTION (sym) = SYMBOL_SECTION (msymbol);
4458 sym = SYMBOL_VALUE_CHAIN (prev);
4462 sym = global_sym_chain[hash];
4468 sym = SYMBOL_VALUE_CHAIN (sym);
4472 if (resolve_objfile == objfile)
4474 resolve_objfile = objfile;
4477 /* Change the storage class of any remaining unresolved globals to
4478 LOC_UNRESOLVED and remove them from the chain. */
4479 for (hash = 0; hash < HASHSIZE; hash++)
4481 sym = global_sym_chain[hash];
4485 sym = SYMBOL_VALUE_CHAIN (sym);
4487 /* Change the symbol address from the misleading chain value
4489 SYMBOL_VALUE_ADDRESS (prev) = 0;
4491 /* Complain about unresolved common block symbols. */
4492 if (SYMBOL_CLASS (prev) == LOC_STATIC)
4493 SYMBOL_CLASS (prev) = LOC_UNRESOLVED;
4495 complaint (&symfile_complaints,
4496 _("%s: common block `%s' from global_sym_chain unresolved"),
4497 objfile->name, DEPRECATED_SYMBOL_NAME (prev));
4500 memset (global_sym_chain, 0, sizeof (global_sym_chain));
4503 /* Initialize anything that needs initializing when starting to read
4504 a fresh piece of a symbol file, e.g. reading in the stuff corresponding
4508 stabsread_init (void)
4512 /* Initialize anything that needs initializing when a completely new
4513 symbol file is specified (not just adding some symbols from another
4514 file, e.g. a shared library). */
4517 stabsread_new_init (void)
4519 /* Empty the hash table of global syms looking for values. */
4520 memset (global_sym_chain, 0, sizeof (global_sym_chain));
4523 /* Initialize anything that needs initializing at the same time as
4524 start_symtab() is called. */
4529 global_stabs = NULL; /* AIX COFF */
4530 /* Leave FILENUM of 0 free for builtin types and this file's types. */
4531 n_this_object_header_files = 1;
4532 type_vector_length = 0;
4533 type_vector = (struct type **) 0;
4535 /* FIXME: If common_block_name is not already NULL, we should complain(). */
4536 common_block_name = NULL;
4539 /* Call after end_symtab() */
4546 xfree (type_vector);
4549 type_vector_length = 0;
4550 previous_stab_code = 0;
4554 finish_global_stabs (struct objfile *objfile)
4558 patch_block_stabs (global_symbols, global_stabs, objfile);
4559 xfree (global_stabs);
4560 global_stabs = NULL;
4564 /* Find the end of the name, delimited by a ':', but don't match
4565 ObjC symbols which look like -[Foo bar::]:bla. */
4567 find_name_end (char *name)
4570 if (s[0] == '-' || *s == '+')
4572 /* Must be an ObjC method symbol. */
4575 error (_("invalid symbol name \"%s\""), name);
4577 s = strchr (s, ']');
4580 error (_("invalid symbol name \"%s\""), name);
4582 return strchr (s, ':');
4586 return strchr (s, ':');
4590 /* Initializer for this module */
4593 _initialize_stabsread (void)
4595 undef_types_allocated = 20;
4596 undef_types_length = 0;
4597 undef_types = (struct type **)
4598 xmalloc (undef_types_allocated * sizeof (struct type *));
4600 noname_undefs_allocated = 20;
4601 noname_undefs_length = 0;
4602 noname_undefs = (struct nat *)
4603 xmalloc (noname_undefs_allocated * sizeof (struct nat));