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[binutils.git] / binutils / stabs.c
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1 /* stabs.c -- Parse stabs debugging information
2 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor <ian@cygnus.com>.
6 This file is part of GNU Binutils.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
23 /* This file contains code which parses stabs debugging information.
24 The organization of this code is based on the gdb stabs reading
25 code. The job it does is somewhat different, because it is not
26 trying to identify the correct address for anything. */
28 #include <stdio.h>
30 #include "bfd.h"
31 #include "bucomm.h"
32 #include "libiberty.h"
33 #include "safe-ctype.h"
34 #include "demangle.h"
35 #include "debug.h"
36 #include "budbg.h"
37 #include "filenames.h"
38 #include "aout/aout64.h"
39 #include "aout/stab_gnu.h"
41 /* The number of predefined XCOFF types. */
43 #define XCOFF_TYPE_COUNT 34
45 /* This structure is used as a handle so that the stab parsing doesn't
46 need to use any static variables. */
48 struct stab_handle
50 /* The BFD. */
51 bfd *abfd;
52 /* TRUE if this is stabs in sections. */
53 bfd_boolean sections;
54 /* The symbol table. */
55 asymbol **syms;
56 /* The number of symbols. */
57 long symcount;
58 /* The accumulated file name string. */
59 char *so_string;
60 /* The value of the last N_SO symbol. */
61 bfd_vma so_value;
62 /* The value of the start of the file, so that we can handle file
63 relative N_LBRAC and N_RBRAC symbols. */
64 bfd_vma file_start_offset;
65 /* The offset of the start of the function, so that we can handle
66 function relative N_LBRAC and N_RBRAC symbols. */
67 bfd_vma function_start_offset;
68 /* The version number of gcc which compiled the current compilation
69 unit, 0 if not compiled by gcc. */
70 int gcc_compiled;
71 /* Whether an N_OPT symbol was seen that was not generated by gcc,
72 so that we can detect the SunPRO compiler. */
73 bfd_boolean n_opt_found;
74 /* The main file name. */
75 char *main_filename;
76 /* A stack of unfinished N_BINCL files. */
77 struct bincl_file *bincl_stack;
78 /* A list of finished N_BINCL files. */
79 struct bincl_file *bincl_list;
80 /* Whether we are inside a function or not. */
81 bfd_boolean within_function;
82 /* The address of the end of the function, used if we have seen an
83 N_FUN symbol while in a function. This is -1 if we have not seen
84 an N_FUN (the normal case). */
85 bfd_vma function_end;
86 /* The depth of block nesting. */
87 int block_depth;
88 /* List of pending variable definitions. */
89 struct stab_pending_var *pending;
90 /* Number of files for which we have types. */
91 unsigned int files;
92 /* Lists of types per file. */
93 struct stab_types **file_types;
94 /* Predefined XCOFF types. */
95 debug_type xcoff_types[XCOFF_TYPE_COUNT];
96 /* Undefined tags. */
97 struct stab_tag *tags;
98 /* Set by parse_stab_type if it sees a structure defined as a cross
99 reference to itself. Reset by parse_stab_type otherwise. */
100 bfd_boolean self_crossref;
103 /* A list of these structures is used to hold pending variable
104 definitions seen before the N_LBRAC of a block. */
106 struct stab_pending_var
108 /* Next pending variable definition. */
109 struct stab_pending_var *next;
110 /* Name. */
111 const char *name;
112 /* Type. */
113 debug_type type;
114 /* Kind. */
115 enum debug_var_kind kind;
116 /* Value. */
117 bfd_vma val;
120 /* A list of these structures is used to hold the types for a single
121 file. */
123 struct stab_types
125 /* Next set of slots for this file. */
126 struct stab_types *next;
127 /* Types indexed by type number. */
128 #define STAB_TYPES_SLOTS (16)
129 debug_type types[STAB_TYPES_SLOTS];
132 /* We keep a list of undefined tags that we encounter, so that we can
133 fill them in if the tag is later defined. */
135 struct stab_tag
137 /* Next undefined tag. */
138 struct stab_tag *next;
139 /* Tag name. */
140 const char *name;
141 /* Type kind. */
142 enum debug_type_kind kind;
143 /* Slot to hold real type when we discover it. If we don't, we fill
144 in an undefined tag type. */
145 debug_type slot;
146 /* Indirect type we have created to point at slot. */
147 debug_type type;
150 static char *savestring (const char *, int);
151 static bfd_vma parse_number (const char **, bfd_boolean *);
152 static void bad_stab (const char *);
153 static void warn_stab (const char *, const char *);
154 static bfd_boolean parse_stab_string
155 (void *, struct stab_handle *, int, int, bfd_vma, const char *);
156 static debug_type parse_stab_type
157 (void *, struct stab_handle *, const char *, const char **, debug_type **);
158 static bfd_boolean parse_stab_type_number (const char **, int *);
159 static debug_type parse_stab_range_type
160 (void *, struct stab_handle *, const char *, const char **, const int *);
161 static debug_type parse_stab_sun_builtin_type (void *, const char **);
162 static debug_type parse_stab_sun_floating_type (void *, const char **);
163 static debug_type parse_stab_enum_type (void *, const char **);
164 static debug_type parse_stab_struct_type
165 (void *, struct stab_handle *, const char *, const char **,
166 bfd_boolean, const int *);
167 static bfd_boolean parse_stab_baseclasses
168 (void *, struct stab_handle *, const char **, debug_baseclass **);
169 static bfd_boolean parse_stab_struct_fields
170 (void *, struct stab_handle *, const char **, debug_field **, bfd_boolean *);
171 static bfd_boolean parse_stab_cpp_abbrev
172 (void *, struct stab_handle *, const char **, debug_field *);
173 static bfd_boolean parse_stab_one_struct_field
174 (void *, struct stab_handle *, const char **, const char *,
175 debug_field *, bfd_boolean *);
176 static bfd_boolean parse_stab_members
177 (void *, struct stab_handle *, const char *, const char **, const int *,
178 debug_method **);
179 static debug_type parse_stab_argtypes
180 (void *, struct stab_handle *, debug_type, const char *, const char *,
181 debug_type, const char *, bfd_boolean, bfd_boolean, const char **);
182 static bfd_boolean parse_stab_tilde_field
183 (void *, struct stab_handle *, const char **, const int *, debug_type *,
184 bfd_boolean *);
185 static debug_type parse_stab_array_type
186 (void *, struct stab_handle *, const char **, bfd_boolean);
187 static void push_bincl (struct stab_handle *, const char *, bfd_vma);
188 static const char *pop_bincl (struct stab_handle *);
189 static bfd_boolean find_excl (struct stab_handle *, const char *, bfd_vma);
190 static bfd_boolean stab_record_variable
191 (void *, struct stab_handle *, const char *, debug_type,
192 enum debug_var_kind, bfd_vma);
193 static bfd_boolean stab_emit_pending_vars (void *, struct stab_handle *);
194 static debug_type *stab_find_slot (struct stab_handle *, const int *);
195 static debug_type stab_find_type (void *, struct stab_handle *, const int *);
196 static bfd_boolean stab_record_type
197 (void *, struct stab_handle *, const int *, debug_type);
198 static debug_type stab_xcoff_builtin_type
199 (void *, struct stab_handle *, int);
200 static debug_type stab_find_tagged_type
201 (void *, struct stab_handle *, const char *, int, enum debug_type_kind);
202 static debug_type *stab_demangle_argtypes
203 (void *, struct stab_handle *, const char *, bfd_boolean *, unsigned int);
204 static debug_type *stab_demangle_v3_argtypes
205 (void *, struct stab_handle *, const char *, bfd_boolean *);
206 static debug_type *stab_demangle_v3_arglist
207 (void *, struct stab_handle *, struct demangle_component *, bfd_boolean *);
208 static debug_type stab_demangle_v3_arg
209 (void *, struct stab_handle *, struct demangle_component *, debug_type,
210 bfd_boolean *);
212 /* Save a string in memory. */
214 static char *
215 savestring (const char *start, int len)
217 char *ret;
219 ret = (char *) xmalloc (len + 1);
220 memcpy (ret, start, len);
221 ret[len] = '\0';
222 return ret;
225 /* Read a number from a string. */
227 static bfd_vma
228 parse_number (const char **pp, bfd_boolean *poverflow)
230 unsigned long ul;
231 const char *orig;
233 if (poverflow != NULL)
234 *poverflow = FALSE;
236 orig = *pp;
238 errno = 0;
239 ul = strtoul (*pp, (char **) pp, 0);
240 if (ul + 1 != 0 || errno == 0)
242 /* If bfd_vma is larger than unsigned long, and the number is
243 meant to be negative, we have to make sure that we sign
244 extend properly. */
245 if (*orig == '-')
246 return (bfd_vma) (bfd_signed_vma) (long) ul;
247 return (bfd_vma) ul;
250 /* Note that even though strtoul overflowed, it should have set *pp
251 to the end of the number, which is where we want it. */
252 if (sizeof (bfd_vma) > sizeof (unsigned long))
254 const char *p;
255 bfd_boolean neg;
256 int base;
257 bfd_vma over, lastdig;
258 bfd_boolean overflow;
259 bfd_vma v;
261 /* Our own version of strtoul, for a bfd_vma. */
262 p = orig;
264 neg = FALSE;
265 if (*p == '+')
266 ++p;
267 else if (*p == '-')
269 neg = TRUE;
270 ++p;
273 base = 10;
274 if (*p == '0')
276 if (p[1] == 'x' || p[1] == 'X')
278 base = 16;
279 p += 2;
281 else
283 base = 8;
284 ++p;
288 over = ((bfd_vma) (bfd_signed_vma) -1) / (bfd_vma) base;
289 lastdig = ((bfd_vma) (bfd_signed_vma) -1) % (bfd_vma) base;
291 overflow = FALSE;
292 v = 0;
293 while (1)
295 int d;
297 d = *p++;
298 if (ISDIGIT (d))
299 d -= '0';
300 else if (ISUPPER (d))
301 d -= 'A';
302 else if (ISLOWER (d))
303 d -= 'a';
304 else
305 break;
307 if (d >= base)
308 break;
310 if (v > over || (v == over && (bfd_vma) d > lastdig))
312 overflow = TRUE;
313 break;
317 if (! overflow)
319 if (neg)
320 v = - v;
321 return v;
325 /* If we get here, the number is too large to represent in a
326 bfd_vma. */
327 if (poverflow != NULL)
328 *poverflow = TRUE;
329 else
330 warn_stab (orig, _("numeric overflow"));
332 return 0;
335 /* Give an error for a bad stab string. */
337 static void
338 bad_stab (const char *p)
340 fprintf (stderr, _("Bad stab: %s\n"), p);
343 /* Warn about something in a stab string. */
345 static void
346 warn_stab (const char *p, const char *err)
348 fprintf (stderr, _("Warning: %s: %s\n"), err, p);
351 /* Create a handle to parse stabs symbols with. */
353 void *
354 start_stab (void *dhandle ATTRIBUTE_UNUSED, bfd *abfd, bfd_boolean sections,
355 asymbol **syms, long symcount)
357 struct stab_handle *ret;
359 ret = (struct stab_handle *) xmalloc (sizeof *ret);
360 memset (ret, 0, sizeof *ret);
361 ret->abfd = abfd;
362 ret->sections = sections;
363 ret->syms = syms;
364 ret->symcount = symcount;
365 ret->files = 1;
366 ret->file_types = (struct stab_types **) xmalloc (sizeof *ret->file_types);
367 ret->file_types[0] = NULL;
368 ret->function_end = (bfd_vma) -1;
369 return (void *) ret;
372 /* When we have processed all the stabs information, we need to go
373 through and fill in all the undefined tags. */
375 bfd_boolean
376 finish_stab (void *dhandle, void *handle)
378 struct stab_handle *info = (struct stab_handle *) handle;
379 struct stab_tag *st;
381 if (info->within_function)
383 if (! stab_emit_pending_vars (dhandle, info)
384 || ! debug_end_function (dhandle, info->function_end))
385 return FALSE;
386 info->within_function = FALSE;
387 info->function_end = (bfd_vma) -1;
390 for (st = info->tags; st != NULL; st = st->next)
392 enum debug_type_kind kind;
394 kind = st->kind;
395 if (kind == DEBUG_KIND_ILLEGAL)
396 kind = DEBUG_KIND_STRUCT;
397 st->slot = debug_make_undefined_tagged_type (dhandle, st->name, kind);
398 if (st->slot == DEBUG_TYPE_NULL)
399 return FALSE;
402 return TRUE;
405 /* Handle a single stabs symbol. */
407 bfd_boolean
408 parse_stab (void *dhandle, void *handle, int type, int desc, bfd_vma value,
409 const char *string)
411 struct stab_handle *info = (struct stab_handle *) handle;
413 /* gcc will emit two N_SO strings per compilation unit, one for the
414 directory name and one for the file name. We just collect N_SO
415 strings as we see them, and start the new compilation unit when
416 we see a non N_SO symbol. */
417 if (info->so_string != NULL
418 && (type != N_SO || *string == '\0' || value != info->so_value))
420 if (! debug_set_filename (dhandle, info->so_string))
421 return FALSE;
422 info->main_filename = info->so_string;
424 info->gcc_compiled = 0;
425 info->n_opt_found = FALSE;
427 /* Generally, for stabs in the symbol table, the N_LBRAC and
428 N_RBRAC symbols are relative to the N_SO symbol value. */
429 if (! info->sections)
430 info->file_start_offset = info->so_value;
432 /* We need to reset the mapping from type numbers to types. We
433 can't free the old mapping, because of the use of
434 debug_make_indirect_type. */
435 info->files = 1;
436 info->file_types = ((struct stab_types **)
437 xmalloc (sizeof *info->file_types));
438 info->file_types[0] = NULL;
440 info->so_string = NULL;
442 /* Now process whatever type we just got. */
445 switch (type)
447 case N_FN:
448 case N_FN_SEQ:
449 break;
451 case N_LBRAC:
452 /* Ignore extra outermost context from SunPRO cc and acc. */
453 if (info->n_opt_found && desc == 1)
454 break;
456 if (! info->within_function)
458 fprintf (stderr, _("N_LBRAC not within function\n"));
459 return FALSE;
462 /* Start an inner lexical block. */
463 if (! debug_start_block (dhandle,
464 (value
465 + info->file_start_offset
466 + info->function_start_offset)))
467 return FALSE;
469 /* Emit any pending variable definitions. */
470 if (! stab_emit_pending_vars (dhandle, info))
471 return FALSE;
473 ++info->block_depth;
474 break;
476 case N_RBRAC:
477 /* Ignore extra outermost context from SunPRO cc and acc. */
478 if (info->n_opt_found && desc == 1)
479 break;
481 /* We shouldn't have any pending variable definitions here, but,
482 if we do, we probably need to emit them before closing the
483 block. */
484 if (! stab_emit_pending_vars (dhandle, info))
485 return FALSE;
487 /* End an inner lexical block. */
488 if (! debug_end_block (dhandle,
489 (value
490 + info->file_start_offset
491 + info->function_start_offset)))
492 return FALSE;
494 --info->block_depth;
495 if (info->block_depth < 0)
497 fprintf (stderr, _("Too many N_RBRACs\n"));
498 return FALSE;
500 break;
502 case N_SO:
503 /* This always ends a function. */
504 if (info->within_function)
506 bfd_vma endval;
508 endval = value;
509 if (*string != '\0'
510 && info->function_end != (bfd_vma) -1
511 && info->function_end < endval)
512 endval = info->function_end;
513 if (! stab_emit_pending_vars (dhandle, info)
514 || ! debug_end_function (dhandle, endval))
515 return FALSE;
516 info->within_function = FALSE;
517 info->function_end = (bfd_vma) -1;
520 /* An empty string is emitted by gcc at the end of a compilation
521 unit. */
522 if (*string == '\0')
523 return TRUE;
525 /* Just accumulate strings until we see a non N_SO symbol. If
526 the string starts with a directory separator or some other
527 form of absolute path specification, we discard the previously
528 accumulated strings. */
529 if (info->so_string == NULL)
530 info->so_string = xstrdup (string);
531 else
533 char *f;
535 f = info->so_string;
537 if (IS_ABSOLUTE_PATH (string))
538 info->so_string = xstrdup (string);
539 else
540 info->so_string = concat (info->so_string, string,
541 (const char *) NULL);
542 free (f);
545 info->so_value = value;
547 break;
549 case N_SOL:
550 /* Start an include file. */
551 if (! debug_start_source (dhandle, string))
552 return FALSE;
553 break;
555 case N_BINCL:
556 /* Start an include file which may be replaced. */
557 push_bincl (info, string, value);
558 if (! debug_start_source (dhandle, string))
559 return FALSE;
560 break;
562 case N_EINCL:
563 /* End an N_BINCL include. */
564 if (! debug_start_source (dhandle, pop_bincl (info)))
565 return FALSE;
566 break;
568 case N_EXCL:
569 /* This is a duplicate of a header file named by N_BINCL which
570 was eliminated by the linker. */
571 if (! find_excl (info, string, value))
572 return FALSE;
573 break;
575 case N_SLINE:
576 if (! debug_record_line (dhandle, desc,
577 value + (info->within_function
578 ? info->function_start_offset : 0)))
579 return FALSE;
580 break;
582 case N_BCOMM:
583 if (! debug_start_common_block (dhandle, string))
584 return FALSE;
585 break;
587 case N_ECOMM:
588 if (! debug_end_common_block (dhandle, string))
589 return FALSE;
590 break;
592 case N_FUN:
593 if (*string == '\0')
595 if (info->within_function)
597 /* This always marks the end of a function; we don't
598 need to worry about info->function_end. */
599 if (info->sections)
600 value += info->function_start_offset;
601 if (! stab_emit_pending_vars (dhandle, info)
602 || ! debug_end_function (dhandle, value))
603 return FALSE;
604 info->within_function = FALSE;
605 info->function_end = (bfd_vma) -1;
607 break;
610 /* A const static symbol in the .text section will have an N_FUN
611 entry. We need to use these to mark the end of the function,
612 in case we are looking at gcc output before it was changed to
613 always emit an empty N_FUN. We can't call debug_end_function
614 here, because it might be a local static symbol. */
615 if (info->within_function
616 && (info->function_end == (bfd_vma) -1
617 || value < info->function_end))
618 info->function_end = value;
620 /* Fall through. */
621 /* FIXME: gdb checks the string for N_STSYM, N_LCSYM or N_ROSYM
622 symbols, and if it does not start with :S, gdb relocates the
623 value to the start of the section. gcc always seems to use
624 :S, so we don't worry about this. */
625 /* Fall through. */
626 default:
628 const char *colon;
630 colon = strchr (string, ':');
631 if (colon != NULL
632 && (colon[1] == 'f' || colon[1] == 'F'))
634 if (info->within_function)
636 bfd_vma endval;
638 endval = value;
639 if (info->function_end != (bfd_vma) -1
640 && info->function_end < endval)
641 endval = info->function_end;
642 if (! stab_emit_pending_vars (dhandle, info)
643 || ! debug_end_function (dhandle, endval))
644 return FALSE;
645 info->function_end = (bfd_vma) -1;
647 /* For stabs in sections, line numbers and block addresses
648 are offsets from the start of the function. */
649 if (info->sections)
650 info->function_start_offset = value;
651 info->within_function = TRUE;
654 if (! parse_stab_string (dhandle, info, type, desc, value, string))
655 return FALSE;
657 break;
659 case N_OPT:
660 if (string != NULL && strcmp (string, "gcc2_compiled.") == 0)
661 info->gcc_compiled = 2;
662 else if (string != NULL && strcmp (string, "gcc_compiled.") == 0)
663 info->gcc_compiled = 1;
664 else
665 info->n_opt_found = TRUE;
666 break;
668 case N_OBJ:
669 case N_ENDM:
670 case N_MAIN:
671 case N_WARNING:
672 break;
675 return TRUE;
678 /* Parse the stabs string. */
680 static bfd_boolean
681 parse_stab_string (void *dhandle, struct stab_handle *info, int stabtype,
682 int desc, bfd_vma value, const char *string)
684 const char *p;
685 char *name;
686 int type;
687 debug_type dtype;
688 bfd_boolean synonym;
689 bfd_boolean self_crossref;
690 unsigned int lineno;
691 debug_type *slot;
693 p = strchr (string, ':');
694 if (p == NULL)
695 return TRUE;
697 while (p[1] == ':')
699 p += 2;
700 p = strchr (p, ':');
701 if (p == NULL)
703 bad_stab (string);
704 return FALSE;
708 /* GCC 2.x puts the line number in desc. SunOS apparently puts in
709 the number of bytes occupied by a type or object, which we
710 ignore. */
711 if (info->gcc_compiled >= 2)
712 lineno = desc;
713 else
714 lineno = 0;
716 /* FIXME: Sometimes the special C++ names start with '.'. */
717 name = NULL;
718 if (string[0] == '$')
720 switch (string[1])
722 case 't':
723 name = "this";
724 break;
725 case 'v':
726 /* Was: name = "vptr"; */
727 break;
728 case 'e':
729 name = "eh_throw";
730 break;
731 case '_':
732 /* This was an anonymous type that was never fixed up. */
733 break;
734 case 'X':
735 /* SunPRO (3.0 at least) static variable encoding. */
736 break;
737 default:
738 warn_stab (string, _("unknown C++ encoded name"));
739 break;
743 if (name == NULL)
745 if (p == string || (string[0] == ' ' && p == string + 1))
746 name = NULL;
747 else
748 name = savestring (string, p - string);
751 ++p;
752 if (ISDIGIT (*p) || *p == '(' || *p == '-')
753 type = 'l';
754 else
755 type = *p++;
757 switch (type)
759 case 'c':
760 /* c is a special case, not followed by a type-number.
761 SYMBOL:c=iVALUE for an integer constant symbol.
762 SYMBOL:c=rVALUE for a floating constant symbol.
763 SYMBOL:c=eTYPE,INTVALUE for an enum constant symbol.
764 e.g. "b:c=e6,0" for "const b = blob1"
765 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
766 if (*p != '=')
768 bad_stab (string);
769 return FALSE;
771 ++p;
772 switch (*p++)
774 case 'r':
775 /* Floating point constant. */
776 if (! debug_record_float_const (dhandle, name, atof (p)))
777 return FALSE;
778 break;
779 case 'i':
780 /* Integer constant. */
781 /* Defining integer constants this way is kind of silly,
782 since 'e' constants allows the compiler to give not only
783 the value, but the type as well. C has at least int,
784 long, unsigned int, and long long as constant types;
785 other languages probably should have at least unsigned as
786 well as signed constants. */
787 if (! debug_record_int_const (dhandle, name, atoi (p)))
788 return FALSE;
789 break;
790 case 'e':
791 /* SYMBOL:c=eTYPE,INTVALUE for a constant symbol whose value
792 can be represented as integral.
793 e.g. "b:c=e6,0" for "const b = blob1"
794 (where type 6 is defined by "blobs:t6=eblob1:0,blob2:1,;"). */
795 dtype = parse_stab_type (dhandle, info, (const char *) NULL,
796 &p, (debug_type **) NULL);
797 if (dtype == DEBUG_TYPE_NULL)
798 return FALSE;
799 if (*p != ',')
801 bad_stab (string);
802 return FALSE;
804 if (! debug_record_typed_const (dhandle, name, dtype, atoi (p)))
805 return FALSE;
806 break;
807 default:
808 bad_stab (string);
809 return FALSE;
812 break;
814 case 'C':
815 /* The name of a caught exception. */
816 dtype = parse_stab_type (dhandle, info, (const char *) NULL,
817 &p, (debug_type **) NULL);
818 if (dtype == DEBUG_TYPE_NULL)
819 return FALSE;
820 if (! debug_record_label (dhandle, name, dtype, value))
821 return FALSE;
822 break;
824 case 'f':
825 case 'F':
826 /* A function definition. */
827 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
828 (debug_type **) NULL);
829 if (dtype == DEBUG_TYPE_NULL)
830 return FALSE;
831 if (! debug_record_function (dhandle, name, dtype, type == 'F', value))
832 return FALSE;
834 /* Sun acc puts declared types of arguments here. We don't care
835 about their actual types (FIXME -- we should remember the whole
836 function prototype), but the list may define some new types
837 that we have to remember, so we must scan it now. */
838 while (*p == ';')
840 ++p;
841 if (parse_stab_type (dhandle, info, (const char *) NULL, &p,
842 (debug_type **) NULL)
843 == DEBUG_TYPE_NULL)
844 return FALSE;
847 break;
849 case 'G':
851 char leading;
852 long c;
853 asymbol **ps;
855 /* A global symbol. The value must be extracted from the
856 symbol table. */
857 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
858 (debug_type **) NULL);
859 if (dtype == DEBUG_TYPE_NULL)
860 return FALSE;
861 leading = bfd_get_symbol_leading_char (info->abfd);
862 for (c = info->symcount, ps = info->syms; c > 0; --c, ++ps)
864 const char *n;
866 n = bfd_asymbol_name (*ps);
867 if (leading != '\0' && *n == leading)
868 ++n;
869 if (*n == *name && strcmp (n, name) == 0)
870 break;
872 if (c > 0)
873 value = bfd_asymbol_value (*ps);
874 if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_GLOBAL,
875 value))
876 return FALSE;
878 break;
880 /* This case is faked by a conditional above, when there is no
881 code letter in the dbx data. Dbx data never actually
882 contains 'l'. */
883 case 'l':
884 case 's':
885 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
886 (debug_type **) NULL);
887 if (dtype == DEBUG_TYPE_NULL)
888 return FALSE;
889 if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_LOCAL,
890 value))
891 return FALSE;
892 break;
894 case 'p':
895 /* A function parameter. */
896 if (*p != 'F')
897 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
898 (debug_type **) NULL);
899 else
901 /* pF is a two-letter code that means a function parameter in
902 Fortran. The type-number specifies the type of the return
903 value. Translate it into a pointer-to-function type. */
904 ++p;
905 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
906 (debug_type **) NULL);
907 if (dtype != DEBUG_TYPE_NULL)
909 debug_type ftype;
911 ftype = debug_make_function_type (dhandle, dtype,
912 (debug_type *) NULL, FALSE);
913 dtype = debug_make_pointer_type (dhandle, ftype);
916 if (dtype == DEBUG_TYPE_NULL)
917 return FALSE;
918 if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_STACK,
919 value))
920 return FALSE;
922 /* FIXME: At this point gdb considers rearranging the parameter
923 address on a big endian machine if it is smaller than an int.
924 We have no way to do that, since we don't really know much
925 about the target. */
926 break;
928 case 'P':
929 if (stabtype == N_FUN)
931 /* Prototype of a function referenced by this file. */
932 while (*p == ';')
934 ++p;
935 if (parse_stab_type (dhandle, info, (const char *) NULL, &p,
936 (debug_type **) NULL)
937 == DEBUG_TYPE_NULL)
938 return FALSE;
940 break;
942 /* Fall through. */
943 case 'R':
944 /* Parameter which is in a register. */
945 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
946 (debug_type **) NULL);
947 if (dtype == DEBUG_TYPE_NULL)
948 return FALSE;
949 if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_REG,
950 value))
951 return FALSE;
952 break;
954 case 'r':
955 /* Register variable (either global or local). */
956 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
957 (debug_type **) NULL);
958 if (dtype == DEBUG_TYPE_NULL)
959 return FALSE;
960 if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_REGISTER,
961 value))
962 return FALSE;
964 /* FIXME: At this point gdb checks to combine pairs of 'p' and
965 'r' stabs into a single 'P' stab. */
966 break;
968 case 'S':
969 /* Static symbol at top level of file. */
970 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
971 (debug_type **) NULL);
972 if (dtype == DEBUG_TYPE_NULL)
973 return FALSE;
974 if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_STATIC,
975 value))
976 return FALSE;
977 break;
979 case 't':
980 /* A typedef. */
981 dtype = parse_stab_type (dhandle, info, name, &p, &slot);
982 if (dtype == DEBUG_TYPE_NULL)
983 return FALSE;
984 if (name == NULL)
986 /* A nameless type. Nothing to do. */
987 return TRUE;
990 dtype = debug_name_type (dhandle, name, dtype);
991 if (dtype == DEBUG_TYPE_NULL)
992 return FALSE;
994 if (slot != NULL)
995 *slot = dtype;
997 break;
999 case 'T':
1000 /* Struct, union, or enum tag. For GNU C++, this can be be followed
1001 by 't' which means we are typedef'ing it as well. */
1002 if (*p != 't')
1004 synonym = FALSE;
1005 /* FIXME: gdb sets synonym to TRUE if the current language
1006 is C++. */
1008 else
1010 synonym = TRUE;
1011 ++p;
1014 dtype = parse_stab_type (dhandle, info, name, &p, &slot);
1015 if (dtype == DEBUG_TYPE_NULL)
1016 return FALSE;
1017 if (name == NULL)
1018 return TRUE;
1020 /* INFO->SELF_CROSSREF is set by parse_stab_type if this type is
1021 a cross reference to itself. These are generated by some
1022 versions of g++. */
1023 self_crossref = info->self_crossref;
1025 dtype = debug_tag_type (dhandle, name, dtype);
1026 if (dtype == DEBUG_TYPE_NULL)
1027 return FALSE;
1028 if (slot != NULL)
1029 *slot = dtype;
1031 /* See if we have a cross reference to this tag which we can now
1032 fill in. Avoid filling in a cross reference to ourselves,
1033 because that would lead to circular debugging information. */
1034 if (! self_crossref)
1036 register struct stab_tag **pst;
1038 for (pst = &info->tags; *pst != NULL; pst = &(*pst)->next)
1040 if ((*pst)->name[0] == name[0]
1041 && strcmp ((*pst)->name, name) == 0)
1043 (*pst)->slot = dtype;
1044 *pst = (*pst)->next;
1045 break;
1050 if (synonym)
1052 dtype = debug_name_type (dhandle, name, dtype);
1053 if (dtype == DEBUG_TYPE_NULL)
1054 return FALSE;
1056 if (slot != NULL)
1057 *slot = dtype;
1060 break;
1062 case 'V':
1063 /* Static symbol of local scope */
1064 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
1065 (debug_type **) NULL);
1066 if (dtype == DEBUG_TYPE_NULL)
1067 return FALSE;
1068 /* FIXME: gdb checks os9k_stabs here. */
1069 if (! stab_record_variable (dhandle, info, name, dtype,
1070 DEBUG_LOCAL_STATIC, value))
1071 return FALSE;
1072 break;
1074 case 'v':
1075 /* Reference parameter. */
1076 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
1077 (debug_type **) NULL);
1078 if (dtype == DEBUG_TYPE_NULL)
1079 return FALSE;
1080 if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_REFERENCE,
1081 value))
1082 return FALSE;
1083 break;
1085 case 'a':
1086 /* Reference parameter which is in a register. */
1087 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
1088 (debug_type **) NULL);
1089 if (dtype == DEBUG_TYPE_NULL)
1090 return FALSE;
1091 if (! debug_record_parameter (dhandle, name, dtype, DEBUG_PARM_REF_REG,
1092 value))
1093 return FALSE;
1094 break;
1096 case 'X':
1097 /* This is used by Sun FORTRAN for "function result value".
1098 Sun claims ("dbx and dbxtool interfaces", 2nd ed)
1099 that Pascal uses it too, but when I tried it Pascal used
1100 "x:3" (local symbol) instead. */
1101 dtype = parse_stab_type (dhandle, info, (const char *) NULL, &p,
1102 (debug_type **) NULL);
1103 if (dtype == DEBUG_TYPE_NULL)
1104 return FALSE;
1105 if (! stab_record_variable (dhandle, info, name, dtype, DEBUG_LOCAL,
1106 value))
1107 return FALSE;
1108 break;
1110 default:
1111 bad_stab (string);
1112 return FALSE;
1115 /* FIXME: gdb converts structure values to structure pointers in a
1116 couple of cases, depending upon the target. */
1118 return TRUE;
1121 /* Parse a stabs type. The typename argument is non-NULL if this is a
1122 typedef or a tag definition. The pp argument points to the stab
1123 string, and is updated. The slotp argument points to a place to
1124 store the slot used if the type is being defined. */
1126 static debug_type
1127 parse_stab_type (void *dhandle, struct stab_handle *info, const char *typename, const char **pp, debug_type **slotp)
1129 const char *orig;
1130 int typenums[2];
1131 int size;
1132 bfd_boolean stringp;
1133 int descriptor;
1134 debug_type dtype;
1136 if (slotp != NULL)
1137 *slotp = NULL;
1139 orig = *pp;
1141 size = -1;
1142 stringp = FALSE;
1144 info->self_crossref = FALSE;
1146 /* Read type number if present. The type number may be omitted.
1147 for instance in a two-dimensional array declared with type
1148 "ar1;1;10;ar1;1;10;4". */
1149 if (! ISDIGIT (**pp) && **pp != '(' && **pp != '-')
1151 /* 'typenums=' not present, type is anonymous. Read and return
1152 the definition, but don't put it in the type vector. */
1153 typenums[0] = typenums[1] = -1;
1155 else
1157 if (! parse_stab_type_number (pp, typenums))
1158 return DEBUG_TYPE_NULL;
1160 if (**pp != '=')
1161 /* Type is not being defined here. Either it already
1162 exists, or this is a forward reference to it. */
1163 return stab_find_type (dhandle, info, typenums);
1165 /* Only set the slot if the type is being defined. This means
1166 that the mapping from type numbers to types will only record
1167 the name of the typedef which defines a type. If we don't do
1168 this, then something like
1169 typedef int foo;
1170 int i;
1171 will record that i is of type foo. Unfortunately, stabs
1172 information is ambiguous about variable types. For this code,
1173 typedef int foo;
1174 int i;
1175 foo j;
1176 the stabs information records both i and j as having the same
1177 type. This could be fixed by patching the compiler. */
1178 if (slotp != NULL && typenums[0] >= 0 && typenums[1] >= 0)
1179 *slotp = stab_find_slot (info, typenums);
1181 /* Type is being defined here. */
1182 /* Skip the '='. */
1183 ++*pp;
1185 while (**pp == '@')
1187 const char *p = *pp + 1;
1188 const char *attr;
1190 if (ISDIGIT (*p) || *p == '(' || *p == '-')
1191 /* Member type. */
1192 break;
1194 /* Type attributes. */
1195 attr = p;
1197 for (; *p != ';'; ++p)
1199 if (*p == '\0')
1201 bad_stab (orig);
1202 return DEBUG_TYPE_NULL;
1205 *pp = p + 1;
1207 switch (*attr)
1209 case 's':
1210 size = atoi (attr + 1);
1211 size /= 8; /* Size is in bits. We store it in bytes. */
1212 if (size <= 0)
1213 size = -1;
1214 break;
1216 case 'S':
1217 stringp = TRUE;
1218 break;
1220 default:
1221 /* Ignore unrecognized type attributes, so future
1222 compilers can invent new ones. */
1223 break;
1228 descriptor = **pp;
1229 ++*pp;
1231 switch (descriptor)
1233 case 'x':
1235 enum debug_type_kind code;
1236 const char *q1, *q2, *p;
1238 /* A cross reference to another type. */
1239 switch (**pp)
1241 case 's':
1242 code = DEBUG_KIND_STRUCT;
1243 break;
1244 case 'u':
1245 code = DEBUG_KIND_UNION;
1246 break;
1247 case 'e':
1248 code = DEBUG_KIND_ENUM;
1249 break;
1250 default:
1251 /* Complain and keep going, so compilers can invent new
1252 cross-reference types. */
1253 warn_stab (orig, _("unrecognized cross reference type"));
1254 code = DEBUG_KIND_STRUCT;
1255 break;
1257 ++*pp;
1259 q1 = strchr (*pp, '<');
1260 p = strchr (*pp, ':');
1261 if (p == NULL)
1263 bad_stab (orig);
1264 return DEBUG_TYPE_NULL;
1266 if (q1 != NULL && p > q1 && p[1] == ':')
1268 int nest = 0;
1270 for (q2 = q1; *q2 != '\0'; ++q2)
1272 if (*q2 == '<')
1273 ++nest;
1274 else if (*q2 == '>')
1275 --nest;
1276 else if (*q2 == ':' && nest == 0)
1277 break;
1279 p = q2;
1280 if (*p != ':')
1282 bad_stab (orig);
1283 return DEBUG_TYPE_NULL;
1287 /* Some versions of g++ can emit stabs like
1288 fleep:T20=xsfleep:
1289 which define structures in terms of themselves. We need to
1290 tell the caller to avoid building a circular structure. */
1291 if (typename != NULL
1292 && strncmp (typename, *pp, p - *pp) == 0
1293 && typename[p - *pp] == '\0')
1294 info->self_crossref = TRUE;
1296 dtype = stab_find_tagged_type (dhandle, info, *pp, p - *pp, code);
1298 *pp = p + 1;
1300 break;
1302 case '-':
1303 case '0':
1304 case '1':
1305 case '2':
1306 case '3':
1307 case '4':
1308 case '5':
1309 case '6':
1310 case '7':
1311 case '8':
1312 case '9':
1313 case '(':
1315 const char *hold;
1316 int xtypenums[2];
1318 /* This type is defined as another type. */
1319 (*pp)--;
1320 hold = *pp;
1322 /* Peek ahead at the number to detect void. */
1323 if (! parse_stab_type_number (pp, xtypenums))
1324 return DEBUG_TYPE_NULL;
1326 if (typenums[0] == xtypenums[0] && typenums[1] == xtypenums[1])
1328 /* This type is being defined as itself, which means that
1329 it is void. */
1330 dtype = debug_make_void_type (dhandle);
1332 else
1334 *pp = hold;
1336 /* Go back to the number and have parse_stab_type get it.
1337 This means that we can deal with something like
1338 t(1,2)=(3,4)=... which the Lucid compiler uses. */
1339 dtype = parse_stab_type (dhandle, info, (const char *) NULL,
1340 pp, (debug_type **) NULL);
1341 if (dtype == DEBUG_TYPE_NULL)
1342 return DEBUG_TYPE_NULL;
1345 if (typenums[0] != -1)
1347 if (! stab_record_type (dhandle, info, typenums, dtype))
1348 return DEBUG_TYPE_NULL;
1351 break;
1354 case '*':
1355 dtype = debug_make_pointer_type (dhandle,
1356 parse_stab_type (dhandle, info,
1357 (const char *) NULL,
1359 (debug_type **) NULL));
1360 break;
1362 case '&':
1363 /* Reference to another type. */
1364 dtype = (debug_make_reference_type
1365 (dhandle,
1366 parse_stab_type (dhandle, info, (const char *) NULL, pp,
1367 (debug_type **) NULL)));
1368 break;
1370 case 'f':
1371 /* Function returning another type. */
1372 /* FIXME: gdb checks os9k_stabs here. */
1373 dtype = (debug_make_function_type
1374 (dhandle,
1375 parse_stab_type (dhandle, info, (const char *) NULL, pp,
1376 (debug_type **) NULL),
1377 (debug_type *) NULL, FALSE));
1378 break;
1380 case 'k':
1381 /* Const qualifier on some type (Sun). */
1382 /* FIXME: gdb accepts 'c' here if os9k_stabs. */
1383 dtype = debug_make_const_type (dhandle,
1384 parse_stab_type (dhandle, info,
1385 (const char *) NULL,
1387 (debug_type **) NULL));
1388 break;
1390 case 'B':
1391 /* Volatile qual on some type (Sun). */
1392 /* FIXME: gdb accepts 'i' here if os9k_stabs. */
1393 dtype = (debug_make_volatile_type
1394 (dhandle,
1395 parse_stab_type (dhandle, info, (const char *) NULL, pp,
1396 (debug_type **) NULL)));
1397 break;
1399 case '@':
1400 /* Offset (class & variable) type. This is used for a pointer
1401 relative to an object. */
1403 debug_type domain;
1404 debug_type memtype;
1406 /* Member type. */
1408 domain = parse_stab_type (dhandle, info, (const char *) NULL, pp,
1409 (debug_type **) NULL);
1410 if (domain == DEBUG_TYPE_NULL)
1411 return DEBUG_TYPE_NULL;
1413 if (**pp != ',')
1415 bad_stab (orig);
1416 return DEBUG_TYPE_NULL;
1418 ++*pp;
1420 memtype = parse_stab_type (dhandle, info, (const char *) NULL, pp,
1421 (debug_type **) NULL);
1422 if (memtype == DEBUG_TYPE_NULL)
1423 return DEBUG_TYPE_NULL;
1425 dtype = debug_make_offset_type (dhandle, domain, memtype);
1427 break;
1429 case '#':
1430 /* Method (class & fn) type. */
1431 if (**pp == '#')
1433 debug_type return_type;
1435 ++*pp;
1436 return_type = parse_stab_type (dhandle, info, (const char *) NULL,
1437 pp, (debug_type **) NULL);
1438 if (return_type == DEBUG_TYPE_NULL)
1439 return DEBUG_TYPE_NULL;
1440 if (**pp != ';')
1442 bad_stab (orig);
1443 return DEBUG_TYPE_NULL;
1445 ++*pp;
1446 dtype = debug_make_method_type (dhandle, return_type,
1447 DEBUG_TYPE_NULL,
1448 (debug_type *) NULL, FALSE);
1450 else
1452 debug_type domain;
1453 debug_type return_type;
1454 debug_type *args;
1455 unsigned int n;
1456 unsigned int alloc;
1457 bfd_boolean varargs;
1459 domain = parse_stab_type (dhandle, info, (const char *) NULL,
1460 pp, (debug_type **) NULL);
1461 if (domain == DEBUG_TYPE_NULL)
1462 return DEBUG_TYPE_NULL;
1464 if (**pp != ',')
1466 bad_stab (orig);
1467 return DEBUG_TYPE_NULL;
1469 ++*pp;
1471 return_type = parse_stab_type (dhandle, info, (const char *) NULL,
1472 pp, (debug_type **) NULL);
1473 if (return_type == DEBUG_TYPE_NULL)
1474 return DEBUG_TYPE_NULL;
1476 alloc = 10;
1477 args = (debug_type *) xmalloc (alloc * sizeof *args);
1478 n = 0;
1479 while (**pp != ';')
1481 if (**pp != ',')
1483 bad_stab (orig);
1484 return DEBUG_TYPE_NULL;
1486 ++*pp;
1488 if (n + 1 >= alloc)
1490 alloc += 10;
1491 args = ((debug_type *)
1492 xrealloc (args, alloc * sizeof *args));
1495 args[n] = parse_stab_type (dhandle, info, (const char *) NULL,
1496 pp, (debug_type **) NULL);
1497 if (args[n] == DEBUG_TYPE_NULL)
1498 return DEBUG_TYPE_NULL;
1499 ++n;
1501 ++*pp;
1503 /* If the last type is not void, then this function takes a
1504 variable number of arguments. Otherwise, we must strip
1505 the void type. */
1506 if (n == 0
1507 || debug_get_type_kind (dhandle, args[n - 1]) != DEBUG_KIND_VOID)
1508 varargs = TRUE;
1509 else
1511 --n;
1512 varargs = FALSE;
1515 args[n] = DEBUG_TYPE_NULL;
1517 dtype = debug_make_method_type (dhandle, return_type, domain, args,
1518 varargs);
1520 break;
1522 case 'r':
1523 /* Range type. */
1524 dtype = parse_stab_range_type (dhandle, info, typename, pp, typenums);
1525 break;
1527 case 'b':
1528 /* FIXME: gdb checks os9k_stabs here. */
1529 /* Sun ACC builtin int type. */
1530 dtype = parse_stab_sun_builtin_type (dhandle, pp);
1531 break;
1533 case 'R':
1534 /* Sun ACC builtin float type. */
1535 dtype = parse_stab_sun_floating_type (dhandle, pp);
1536 break;
1538 case 'e':
1539 /* Enumeration type. */
1540 dtype = parse_stab_enum_type (dhandle, pp);
1541 break;
1543 case 's':
1544 case 'u':
1545 /* Struct or union type. */
1546 dtype = parse_stab_struct_type (dhandle, info, typename, pp,
1547 descriptor == 's', typenums);
1548 break;
1550 case 'a':
1551 /* Array type. */
1552 if (**pp != 'r')
1554 bad_stab (orig);
1555 return DEBUG_TYPE_NULL;
1557 ++*pp;
1559 dtype = parse_stab_array_type (dhandle, info, pp, stringp);
1560 break;
1562 case 'S':
1563 dtype = debug_make_set_type (dhandle,
1564 parse_stab_type (dhandle, info,
1565 (const char *) NULL,
1567 (debug_type **) NULL),
1568 stringp);
1569 break;
1571 default:
1572 bad_stab (orig);
1573 return DEBUG_TYPE_NULL;
1576 if (dtype == DEBUG_TYPE_NULL)
1577 return DEBUG_TYPE_NULL;
1579 if (typenums[0] != -1)
1581 if (! stab_record_type (dhandle, info, typenums, dtype))
1582 return DEBUG_TYPE_NULL;
1585 if (size != -1)
1587 if (! debug_record_type_size (dhandle, dtype, (unsigned int) size))
1588 return DEBUG_TYPE_NULL;
1591 return dtype;
1594 /* Read a number by which a type is referred to in dbx data, or
1595 perhaps read a pair (FILENUM, TYPENUM) in parentheses. Just a
1596 single number N is equivalent to (0,N). Return the two numbers by
1597 storing them in the vector TYPENUMS. */
1599 static bfd_boolean
1600 parse_stab_type_number (const char **pp, int *typenums)
1602 const char *orig;
1604 orig = *pp;
1606 if (**pp != '(')
1608 typenums[0] = 0;
1609 typenums[1] = (int) parse_number (pp, (bfd_boolean *) NULL);
1611 else
1613 ++*pp;
1614 typenums[0] = (int) parse_number (pp, (bfd_boolean *) NULL);
1615 if (**pp != ',')
1617 bad_stab (orig);
1618 return FALSE;
1620 ++*pp;
1621 typenums[1] = (int) parse_number (pp, (bfd_boolean *) NULL);
1622 if (**pp != ')')
1624 bad_stab (orig);
1625 return FALSE;
1627 ++*pp;
1630 return TRUE;
1633 /* Parse a range type. */
1635 static debug_type
1636 parse_stab_range_type (void *dhandle, struct stab_handle *info, const char *typename, const char **pp, const int *typenums)
1638 const char *orig;
1639 int rangenums[2];
1640 bfd_boolean self_subrange;
1641 debug_type index_type;
1642 const char *s2, *s3;
1643 bfd_signed_vma n2, n3;
1644 bfd_boolean ov2, ov3;
1646 orig = *pp;
1648 index_type = DEBUG_TYPE_NULL;
1650 /* First comes a type we are a subrange of.
1651 In C it is usually 0, 1 or the type being defined. */
1652 if (! parse_stab_type_number (pp, rangenums))
1653 return DEBUG_TYPE_NULL;
1655 self_subrange = (rangenums[0] == typenums[0]
1656 && rangenums[1] == typenums[1]);
1658 if (**pp == '=')
1660 *pp = orig;
1661 index_type = parse_stab_type (dhandle, info, (const char *) NULL,
1662 pp, (debug_type **) NULL);
1663 if (index_type == DEBUG_TYPE_NULL)
1664 return DEBUG_TYPE_NULL;
1667 if (**pp == ';')
1668 ++*pp;
1670 /* The remaining two operands are usually lower and upper bounds of
1671 the range. But in some special cases they mean something else. */
1672 s2 = *pp;
1673 n2 = parse_number (pp, &ov2);
1674 if (**pp != ';')
1676 bad_stab (orig);
1677 return DEBUG_TYPE_NULL;
1679 ++*pp;
1681 s3 = *pp;
1682 n3 = parse_number (pp, &ov3);
1683 if (**pp != ';')
1685 bad_stab (orig);
1686 return DEBUG_TYPE_NULL;
1688 ++*pp;
1690 if (ov2 || ov3)
1692 /* gcc will emit range stabs for long long types. Handle this
1693 as a special case. FIXME: This needs to be more general. */
1694 #define LLLOW "01000000000000000000000;"
1695 #define LLHIGH "0777777777777777777777;"
1696 #define ULLHIGH "01777777777777777777777;"
1697 if (index_type == DEBUG_TYPE_NULL)
1699 if (strncmp (s2, LLLOW, sizeof LLLOW - 1) == 0
1700 && strncmp (s3, LLHIGH, sizeof LLHIGH - 1) == 0)
1701 return debug_make_int_type (dhandle, 8, FALSE);
1702 if (! ov2
1703 && n2 == 0
1704 && strncmp (s3, ULLHIGH, sizeof ULLHIGH - 1) == 0)
1705 return debug_make_int_type (dhandle, 8, TRUE);
1708 warn_stab (orig, _("numeric overflow"));
1711 if (index_type == DEBUG_TYPE_NULL)
1713 /* A type defined as a subrange of itself, with both bounds 0,
1714 is void. */
1715 if (self_subrange && n2 == 0 && n3 == 0)
1716 return debug_make_void_type (dhandle);
1718 /* A type defined as a subrange of itself, with n2 positive and
1719 n3 zero, is a complex type, and n2 is the number of bytes. */
1720 if (self_subrange && n3 == 0 && n2 > 0)
1721 return debug_make_complex_type (dhandle, n2);
1723 /* If n3 is zero and n2 is positive, this is a floating point
1724 type, and n2 is the number of bytes. */
1725 if (n3 == 0 && n2 > 0)
1726 return debug_make_float_type (dhandle, n2);
1728 /* If the upper bound is -1, this is an unsigned int. */
1729 if (n2 == 0 && n3 == -1)
1731 /* When gcc is used with -gstabs, but not -gstabs+, it will emit
1732 long long int:t6=r1;0;-1;
1733 long long unsigned int:t7=r1;0;-1;
1734 We hack here to handle this reasonably. */
1735 if (typename != NULL)
1737 if (strcmp (typename, "long long int") == 0)
1738 return debug_make_int_type (dhandle, 8, FALSE);
1739 else if (strcmp (typename, "long long unsigned int") == 0)
1740 return debug_make_int_type (dhandle, 8, TRUE);
1742 /* FIXME: The size here really depends upon the target. */
1743 return debug_make_int_type (dhandle, 4, TRUE);
1746 /* A range of 0 to 127 is char. */
1747 if (self_subrange && n2 == 0 && n3 == 127)
1748 return debug_make_int_type (dhandle, 1, FALSE);
1750 /* FIXME: gdb checks for the language CHILL here. */
1752 if (n2 == 0)
1754 if (n3 < 0)
1755 return debug_make_int_type (dhandle, - n3, TRUE);
1756 else if (n3 == 0xff)
1757 return debug_make_int_type (dhandle, 1, TRUE);
1758 else if (n3 == 0xffff)
1759 return debug_make_int_type (dhandle, 2, TRUE);
1760 else if (n3 == (bfd_signed_vma) 0xffffffff)
1761 return debug_make_int_type (dhandle, 4, TRUE);
1762 #ifdef BFD64
1763 else if (n3 == ((((bfd_signed_vma) 0xffffffff) << 32) | 0xffffffff))
1764 return debug_make_int_type (dhandle, 8, TRUE);
1765 #endif
1767 else if (n3 == 0
1768 && n2 < 0
1769 && (self_subrange || n2 == -8))
1770 return debug_make_int_type (dhandle, - n2, TRUE);
1771 else if (n2 == - n3 - 1 || n2 == n3 + 1)
1773 if (n3 == 0x7f)
1774 return debug_make_int_type (dhandle, 1, FALSE);
1775 else if (n3 == 0x7fff)
1776 return debug_make_int_type (dhandle, 2, FALSE);
1777 else if (n3 == 0x7fffffff)
1778 return debug_make_int_type (dhandle, 4, FALSE);
1779 #ifdef BFD64
1780 else if (n3 == ((((bfd_vma) 0x7fffffff) << 32) | 0xffffffff))
1781 return debug_make_int_type (dhandle, 8, FALSE);
1782 #endif
1786 /* At this point I don't have the faintest idea how to deal with a
1787 self_subrange type; I'm going to assume that this is used as an
1788 idiom, and that all of them are special cases. So . . . */
1789 if (self_subrange)
1791 bad_stab (orig);
1792 return DEBUG_TYPE_NULL;
1795 index_type = stab_find_type (dhandle, info, rangenums);
1796 if (index_type == DEBUG_TYPE_NULL)
1798 /* Does this actually ever happen? Is that why we are worrying
1799 about dealing with it rather than just calling error_type? */
1800 warn_stab (orig, _("missing index type"));
1801 index_type = debug_make_int_type (dhandle, 4, FALSE);
1804 return debug_make_range_type (dhandle, index_type, n2, n3);
1807 /* Sun's ACC uses a somewhat saner method for specifying the builtin
1808 typedefs in every file (for int, long, etc):
1810 type = b <signed> <width>; <offset>; <nbits>
1811 signed = u or s. Possible c in addition to u or s (for char?).
1812 offset = offset from high order bit to start bit of type.
1813 width is # bytes in object of this type, nbits is # bits in type.
1815 The width/offset stuff appears to be for small objects stored in
1816 larger ones (e.g. `shorts' in `int' registers). We ignore it for now,
1817 FIXME. */
1819 static debug_type
1820 parse_stab_sun_builtin_type (void *dhandle, const char **pp)
1822 const char *orig;
1823 bfd_boolean unsignedp;
1824 bfd_vma bits;
1826 orig = *pp;
1828 switch (**pp)
1830 case 's':
1831 unsignedp = FALSE;
1832 break;
1833 case 'u':
1834 unsignedp = TRUE;
1835 break;
1836 default:
1837 bad_stab (orig);
1838 return DEBUG_TYPE_NULL;
1840 ++*pp;
1842 /* For some odd reason, all forms of char put a c here. This is strange
1843 because no other type has this honor. We can safely ignore this because
1844 we actually determine 'char'acterness by the number of bits specified in
1845 the descriptor. */
1846 if (**pp == 'c')
1847 ++*pp;
1849 /* The first number appears to be the number of bytes occupied
1850 by this type, except that unsigned short is 4 instead of 2.
1851 Since this information is redundant with the third number,
1852 we will ignore it. */
1853 (void) parse_number (pp, (bfd_boolean *) NULL);
1854 if (**pp != ';')
1856 bad_stab (orig);
1857 return DEBUG_TYPE_NULL;
1859 ++*pp;
1861 /* The second number is always 0, so ignore it too. */
1862 (void) parse_number (pp, (bfd_boolean *) NULL);
1863 if (**pp != ';')
1865 bad_stab (orig);
1866 return DEBUG_TYPE_NULL;
1868 ++*pp;
1870 /* The third number is the number of bits for this type. */
1871 bits = parse_number (pp, (bfd_boolean *) NULL);
1873 /* The type *should* end with a semicolon. If it are embedded
1874 in a larger type the semicolon may be the only way to know where
1875 the type ends. If this type is at the end of the stabstring we
1876 can deal with the omitted semicolon (but we don't have to like
1877 it). Don't bother to complain(), Sun's compiler omits the semicolon
1878 for "void". */
1879 if (**pp == ';')
1880 ++*pp;
1882 if (bits == 0)
1883 return debug_make_void_type (dhandle);
1885 return debug_make_int_type (dhandle, bits / 8, unsignedp);
1888 /* Parse a builtin floating type generated by the Sun compiler. */
1890 static debug_type
1891 parse_stab_sun_floating_type (void *dhandle, const char **pp)
1893 const char *orig;
1894 bfd_vma details;
1895 bfd_vma bytes;
1897 orig = *pp;
1899 /* The first number has more details about the type, for example
1900 FN_COMPLEX. */
1901 details = parse_number (pp, (bfd_boolean *) NULL);
1902 if (**pp != ';')
1904 bad_stab (orig);
1905 return DEBUG_TYPE_NULL;
1908 /* The second number is the number of bytes occupied by this type */
1909 bytes = parse_number (pp, (bfd_boolean *) NULL);
1910 if (**pp != ';')
1912 bad_stab (orig);
1913 return DEBUG_TYPE_NULL;
1916 if (details == NF_COMPLEX
1917 || details == NF_COMPLEX16
1918 || details == NF_COMPLEX32)
1919 return debug_make_complex_type (dhandle, bytes);
1921 return debug_make_float_type (dhandle, bytes);
1924 /* Handle an enum type. */
1926 static debug_type
1927 parse_stab_enum_type (void *dhandle, const char **pp)
1929 const char *orig;
1930 const char **names;
1931 bfd_signed_vma *values;
1932 unsigned int n;
1933 unsigned int alloc;
1935 orig = *pp;
1937 /* FIXME: gdb checks os9k_stabs here. */
1939 /* The aix4 compiler emits an extra field before the enum members;
1940 my guess is it's a type of some sort. Just ignore it. */
1941 if (**pp == '-')
1943 while (**pp != ':')
1944 ++*pp;
1945 ++*pp;
1948 /* Read the value-names and their values.
1949 The input syntax is NAME:VALUE,NAME:VALUE, and so on.
1950 A semicolon or comma instead of a NAME means the end. */
1951 alloc = 10;
1952 names = (const char **) xmalloc (alloc * sizeof *names);
1953 values = (bfd_signed_vma *) xmalloc (alloc * sizeof *values);
1954 n = 0;
1955 while (**pp != '\0' && **pp != ';' && **pp != ',')
1957 const char *p;
1958 char *name;
1959 bfd_signed_vma val;
1961 p = *pp;
1962 while (*p != ':')
1963 ++p;
1965 name = savestring (*pp, p - *pp);
1967 *pp = p + 1;
1968 val = (bfd_signed_vma) parse_number (pp, (bfd_boolean *) NULL);
1969 if (**pp != ',')
1971 bad_stab (orig);
1972 return DEBUG_TYPE_NULL;
1974 ++*pp;
1976 if (n + 1 >= alloc)
1978 alloc += 10;
1979 names = ((const char **)
1980 xrealloc (names, alloc * sizeof *names));
1981 values = ((bfd_signed_vma *)
1982 xrealloc (values, alloc * sizeof *values));
1985 names[n] = name;
1986 values[n] = val;
1987 ++n;
1990 names[n] = NULL;
1991 values[n] = 0;
1993 if (**pp == ';')
1994 ++*pp;
1996 return debug_make_enum_type (dhandle, names, values);
1999 /* Read the description of a structure (or union type) and return an object
2000 describing the type.
2002 PP points to a character pointer that points to the next unconsumed token
2003 in the stabs string. For example, given stabs "A:T4=s4a:1,0,32;;",
2004 *PP will point to "4a:1,0,32;;". */
2006 static debug_type
2007 parse_stab_struct_type (void *dhandle, struct stab_handle *info,
2008 const char *tagname, const char **pp,
2009 bfd_boolean structp, const int *typenums)
2011 const char *orig;
2012 bfd_vma size;
2013 debug_baseclass *baseclasses;
2014 debug_field *fields;
2015 bfd_boolean statics;
2016 debug_method *methods;
2017 debug_type vptrbase;
2018 bfd_boolean ownvptr;
2020 orig = *pp;
2022 /* Get the size. */
2023 size = parse_number (pp, (bfd_boolean *) NULL);
2025 /* Get the other information. */
2026 if (! parse_stab_baseclasses (dhandle, info, pp, &baseclasses)
2027 || ! parse_stab_struct_fields (dhandle, info, pp, &fields, &statics)
2028 || ! parse_stab_members (dhandle, info, tagname, pp, typenums, &methods)
2029 || ! parse_stab_tilde_field (dhandle, info, pp, typenums, &vptrbase,
2030 &ownvptr))
2031 return DEBUG_TYPE_NULL;
2033 if (! statics
2034 && baseclasses == NULL
2035 && methods == NULL
2036 && vptrbase == DEBUG_TYPE_NULL
2037 && ! ownvptr)
2038 return debug_make_struct_type (dhandle, structp, size, fields);
2040 return debug_make_object_type (dhandle, structp, size, fields, baseclasses,
2041 methods, vptrbase, ownvptr);
2044 /* The stabs for C++ derived classes contain baseclass information which
2045 is marked by a '!' character after the total size. This function is
2046 called when we encounter the baseclass marker, and slurps up all the
2047 baseclass information.
2049 Immediately following the '!' marker is the number of base classes that
2050 the class is derived from, followed by information for each base class.
2051 For each base class, there are two visibility specifiers, a bit offset
2052 to the base class information within the derived class, a reference to
2053 the type for the base class, and a terminating semicolon.
2055 A typical example, with two base classes, would be "!2,020,19;0264,21;".
2056 ^^ ^ ^ ^ ^ ^ ^
2057 Baseclass information marker __________________|| | | | | | |
2058 Number of baseclasses __________________________| | | | | | |
2059 Visibility specifiers (2) ________________________| | | | | |
2060 Offset in bits from start of class _________________| | | | |
2061 Type number for base class ___________________________| | | |
2062 Visibility specifiers (2) _______________________________| | |
2063 Offset in bits from start of class ________________________| |
2064 Type number of base class ____________________________________|
2066 Return TRUE for success, FALSE for failure. */
2068 static bfd_boolean
2069 parse_stab_baseclasses (void *dhandle, struct stab_handle *info,
2070 const char **pp, debug_baseclass **retp)
2072 const char *orig;
2073 unsigned int c, i;
2074 debug_baseclass *classes;
2076 *retp = NULL;
2078 orig = *pp;
2080 if (**pp != '!')
2082 /* No base classes. */
2083 return TRUE;
2085 ++*pp;
2087 c = (unsigned int) parse_number (pp, (bfd_boolean *) NULL);
2089 if (**pp != ',')
2091 bad_stab (orig);
2092 return FALSE;
2094 ++*pp;
2096 classes = (debug_baseclass *) xmalloc ((c + 1) * sizeof (**retp));
2098 for (i = 0; i < c; i++)
2100 bfd_boolean virtual;
2101 enum debug_visibility visibility;
2102 bfd_vma bitpos;
2103 debug_type type;
2105 switch (**pp)
2107 case '0':
2108 virtual = FALSE;
2109 break;
2110 case '1':
2111 virtual = TRUE;
2112 break;
2113 default:
2114 warn_stab (orig, _("unknown virtual character for baseclass"));
2115 virtual = FALSE;
2116 break;
2118 ++*pp;
2120 switch (**pp)
2122 case '0':
2123 visibility = DEBUG_VISIBILITY_PRIVATE;
2124 break;
2125 case '1':
2126 visibility = DEBUG_VISIBILITY_PROTECTED;
2127 break;
2128 case '2':
2129 visibility = DEBUG_VISIBILITY_PUBLIC;
2130 break;
2131 default:
2132 warn_stab (orig, _("unknown visibility character for baseclass"));
2133 visibility = DEBUG_VISIBILITY_PUBLIC;
2134 break;
2136 ++*pp;
2138 /* The remaining value is the bit offset of the portion of the
2139 object corresponding to this baseclass. Always zero in the
2140 absence of multiple inheritance. */
2141 bitpos = parse_number (pp, (bfd_boolean *) NULL);
2142 if (**pp != ',')
2144 bad_stab (orig);
2145 return FALSE;
2147 ++*pp;
2149 type = parse_stab_type (dhandle, info, (const char *) NULL, pp,
2150 (debug_type **) NULL);
2151 if (type == DEBUG_TYPE_NULL)
2152 return FALSE;
2154 classes[i] = debug_make_baseclass (dhandle, type, bitpos, virtual,
2155 visibility);
2156 if (classes[i] == DEBUG_BASECLASS_NULL)
2157 return FALSE;
2159 if (**pp != ';')
2160 return FALSE;
2161 ++*pp;
2164 classes[i] = DEBUG_BASECLASS_NULL;
2166 *retp = classes;
2168 return TRUE;
2171 /* Read struct or class data fields. They have the form:
2173 NAME : [VISIBILITY] TYPENUM , BITPOS , BITSIZE ;
2175 At the end, we see a semicolon instead of a field.
2177 In C++, this may wind up being NAME:?TYPENUM:PHYSNAME; for
2178 a static field.
2180 The optional VISIBILITY is one of:
2182 '/0' (VISIBILITY_PRIVATE)
2183 '/1' (VISIBILITY_PROTECTED)
2184 '/2' (VISIBILITY_PUBLIC)
2185 '/9' (VISIBILITY_IGNORE)
2187 or nothing, for C style fields with public visibility.
2189 Returns 1 for success, 0 for failure. */
2191 static bfd_boolean
2192 parse_stab_struct_fields (void *dhandle, struct stab_handle *info,
2193 const char **pp, debug_field **retp,
2194 bfd_boolean *staticsp)
2196 const char *orig;
2197 const char *p;
2198 debug_field *fields;
2199 unsigned int c;
2200 unsigned int alloc;
2202 *retp = NULL;
2203 *staticsp = FALSE;
2205 orig = *pp;
2207 c = 0;
2208 alloc = 10;
2209 fields = (debug_field *) xmalloc (alloc * sizeof *fields);
2210 while (**pp != ';')
2212 /* FIXME: gdb checks os9k_stabs here. */
2214 p = *pp;
2216 /* Add 1 to c to leave room for NULL pointer at end. */
2217 if (c + 1 >= alloc)
2219 alloc += 10;
2220 fields = ((debug_field *)
2221 xrealloc (fields, alloc * sizeof *fields));
2224 /* If it starts with CPLUS_MARKER it is a special abbreviation,
2225 unless the CPLUS_MARKER is followed by an underscore, in
2226 which case it is just the name of an anonymous type, which we
2227 should handle like any other type name. We accept either '$'
2228 or '.', because a field name can never contain one of these
2229 characters except as a CPLUS_MARKER. */
2231 if ((*p == '$' || *p == '.') && p[1] != '_')
2233 ++*pp;
2234 if (! parse_stab_cpp_abbrev (dhandle, info, pp, fields + c))
2235 return FALSE;
2236 ++c;
2237 continue;
2240 /* Look for the ':' that separates the field name from the field
2241 values. Data members are delimited by a single ':', while member
2242 functions are delimited by a pair of ':'s. When we hit the member
2243 functions (if any), terminate scan loop and return. */
2245 p = strchr (p, ':');
2246 if (p == NULL)
2248 bad_stab (orig);
2249 return FALSE;
2252 if (p[1] == ':')
2253 break;
2255 if (! parse_stab_one_struct_field (dhandle, info, pp, p, fields + c,
2256 staticsp))
2257 return FALSE;
2259 ++c;
2262 fields[c] = DEBUG_FIELD_NULL;
2264 *retp = fields;
2266 return TRUE;
2269 /* Special GNU C++ name. */
2271 static bfd_boolean
2272 parse_stab_cpp_abbrev (void *dhandle, struct stab_handle *info,
2273 const char **pp, debug_field *retp)
2275 const char *orig;
2276 int cpp_abbrev;
2277 debug_type context;
2278 const char *name;
2279 const char *typename;
2280 debug_type type;
2281 bfd_vma bitpos;
2283 *retp = DEBUG_FIELD_NULL;
2285 orig = *pp;
2287 if (**pp != 'v')
2289 bad_stab (*pp);
2290 return FALSE;
2292 ++*pp;
2294 cpp_abbrev = **pp;
2295 ++*pp;
2297 /* At this point, *pp points to something like "22:23=*22...", where
2298 the type number before the ':' is the "context" and everything
2299 after is a regular type definition. Lookup the type, find it's
2300 name, and construct the field name. */
2302 context = parse_stab_type (dhandle, info, (const char *) NULL, pp,
2303 (debug_type **) NULL);
2304 if (context == DEBUG_TYPE_NULL)
2305 return FALSE;
2307 switch (cpp_abbrev)
2309 case 'f':
2310 /* $vf -- a virtual function table pointer. */
2311 name = "_vptr$";
2312 break;
2313 case 'b':
2314 /* $vb -- a virtual bsomethingorother */
2315 typename = debug_get_type_name (dhandle, context);
2316 if (typename == NULL)
2318 warn_stab (orig, _("unnamed $vb type"));
2319 typename = "FOO";
2321 name = concat ("_vb$", typename, (const char *) NULL);
2322 break;
2323 default:
2324 warn_stab (orig, _("unrecognized C++ abbreviation"));
2325 name = "INVALID_CPLUSPLUS_ABBREV";
2326 break;
2329 if (**pp != ':')
2331 bad_stab (orig);
2332 return FALSE;
2334 ++*pp;
2336 type = parse_stab_type (dhandle, info, (const char *) NULL, pp,
2337 (debug_type **) NULL);
2338 if (**pp != ',')
2340 bad_stab (orig);
2341 return FALSE;
2343 ++*pp;
2345 bitpos = parse_number (pp, (bfd_boolean *) NULL);
2346 if (**pp != ';')
2348 bad_stab (orig);
2349 return FALSE;
2351 ++*pp;
2353 *retp = debug_make_field (dhandle, name, type, bitpos, 0,
2354 DEBUG_VISIBILITY_PRIVATE);
2355 if (*retp == DEBUG_FIELD_NULL)
2356 return FALSE;
2358 return TRUE;
2361 /* Parse a single field in a struct or union. */
2363 static bfd_boolean
2364 parse_stab_one_struct_field (void *dhandle, struct stab_handle *info,
2365 const char **pp, const char *p,
2366 debug_field *retp, bfd_boolean *staticsp)
2368 const char *orig;
2369 char *name;
2370 enum debug_visibility visibility;
2371 debug_type type;
2372 bfd_vma bitpos;
2373 bfd_vma bitsize;
2375 orig = *pp;
2377 /* FIXME: gdb checks ARM_DEMANGLING here. */
2379 name = savestring (*pp, p - *pp);
2381 *pp = p + 1;
2383 if (**pp != '/')
2384 visibility = DEBUG_VISIBILITY_PUBLIC;
2385 else
2387 ++*pp;
2388 switch (**pp)
2390 case '0':
2391 visibility = DEBUG_VISIBILITY_PRIVATE;
2392 break;
2393 case '1':
2394 visibility = DEBUG_VISIBILITY_PROTECTED;
2395 break;
2396 case '2':
2397 visibility = DEBUG_VISIBILITY_PUBLIC;
2398 break;
2399 default:
2400 warn_stab (orig, _("unknown visibility character for field"));
2401 visibility = DEBUG_VISIBILITY_PUBLIC;
2402 break;
2404 ++*pp;
2407 type = parse_stab_type (dhandle, info, (const char *) NULL, pp,
2408 (debug_type **) NULL);
2409 if (type == DEBUG_TYPE_NULL)
2410 return FALSE;
2412 if (**pp == ':')
2414 char *varname;
2416 /* This is a static class member. */
2417 ++*pp;
2418 p = strchr (*pp, ';');
2419 if (p == NULL)
2421 bad_stab (orig);
2422 return FALSE;
2425 varname = savestring (*pp, p - *pp);
2427 *pp = p + 1;
2429 *retp = debug_make_static_member (dhandle, name, type, varname,
2430 visibility);
2431 *staticsp = TRUE;
2433 return TRUE;
2436 if (**pp != ',')
2438 bad_stab (orig);
2439 return FALSE;
2441 ++*pp;
2443 bitpos = parse_number (pp, (bfd_boolean *) NULL);
2444 if (**pp != ',')
2446 bad_stab (orig);
2447 return FALSE;
2449 ++*pp;
2451 bitsize = parse_number (pp, (bfd_boolean *) NULL);
2452 if (**pp != ';')
2454 bad_stab (orig);
2455 return FALSE;
2457 ++*pp;
2459 if (bitpos == 0 && bitsize == 0)
2461 /* This can happen in two cases: (1) at least for gcc 2.4.5 or
2462 so, it is a field which has been optimized out. The correct
2463 stab for this case is to use VISIBILITY_IGNORE, but that is a
2464 recent invention. (2) It is a 0-size array. For example
2465 union { int num; char str[0]; } foo. Printing "<no value>"
2466 for str in "p foo" is OK, since foo.str (and thus foo.str[3])
2467 will continue to work, and a 0-size array as a whole doesn't
2468 have any contents to print.
2470 I suspect this probably could also happen with gcc -gstabs
2471 (not -gstabs+) for static fields, and perhaps other C++
2472 extensions. Hopefully few people use -gstabs with gdb, since
2473 it is intended for dbx compatibility. */
2474 visibility = DEBUG_VISIBILITY_IGNORE;
2477 /* FIXME: gdb does some stuff here to mark fields as unpacked. */
2479 *retp = debug_make_field (dhandle, name, type, bitpos, bitsize, visibility);
2481 return TRUE;
2484 /* Read member function stabs info for C++ classes. The form of each member
2485 function data is:
2487 NAME :: TYPENUM[=type definition] ARGS : PHYSNAME ;
2489 An example with two member functions is:
2491 afunc1::20=##15;:i;2A.;afunc2::20:i;2A.;
2493 For the case of overloaded operators, the format is op$::*.funcs, where
2494 $ is the CPLUS_MARKER (usually '$'), `*' holds the place for an operator
2495 name (such as `+=') and `.' marks the end of the operator name. */
2497 static bfd_boolean
2498 parse_stab_members (void *dhandle, struct stab_handle *info,
2499 const char *tagname, const char **pp,
2500 const int *typenums, debug_method **retp)
2502 const char *orig;
2503 debug_method *methods;
2504 unsigned int c;
2505 unsigned int alloc;
2507 *retp = NULL;
2509 orig = *pp;
2511 alloc = 0;
2512 methods = NULL;
2513 c = 0;
2515 while (**pp != ';')
2517 const char *p;
2518 char *name;
2519 debug_method_variant *variants;
2520 unsigned int cvars;
2521 unsigned int allocvars;
2522 debug_type look_ahead_type;
2524 p = strchr (*pp, ':');
2525 if (p == NULL || p[1] != ':')
2526 break;
2528 /* FIXME: Some systems use something other than '$' here. */
2529 if ((*pp)[0] != 'o' || (*pp)[1] != 'p' || (*pp)[2] != '$')
2531 name = savestring (*pp, p - *pp);
2532 *pp = p + 2;
2534 else
2536 /* This is a completely weird case. In order to stuff in the
2537 names that might contain colons (the usual name delimiter),
2538 Mike Tiemann defined a different name format which is
2539 signalled if the identifier is "op$". In that case, the
2540 format is "op$::XXXX." where XXXX is the name. This is
2541 used for names like "+" or "=". YUUUUUUUK! FIXME! */
2542 *pp = p + 2;
2543 for (p = *pp; *p != '.' && *p != '\0'; p++)
2545 if (*p != '.')
2547 bad_stab (orig);
2548 return FALSE;
2550 name = savestring (*pp, p - *pp);
2551 *pp = p + 1;
2554 allocvars = 10;
2555 variants = ((debug_method_variant *)
2556 xmalloc (allocvars * sizeof *variants));
2557 cvars = 0;
2559 look_ahead_type = DEBUG_TYPE_NULL;
2563 debug_type type;
2564 bfd_boolean stub;
2565 char *argtypes;
2566 enum debug_visibility visibility;
2567 bfd_boolean constp, volatilep, staticp;
2568 bfd_vma voffset;
2569 debug_type context;
2570 const char *physname;
2571 bfd_boolean varargs;
2573 if (look_ahead_type != DEBUG_TYPE_NULL)
2575 /* g++ version 1 kludge */
2576 type = look_ahead_type;
2577 look_ahead_type = DEBUG_TYPE_NULL;
2579 else
2581 type = parse_stab_type (dhandle, info, (const char *) NULL, pp,
2582 (debug_type **) NULL);
2583 if (type == DEBUG_TYPE_NULL)
2584 return FALSE;
2585 if (**pp != ':')
2587 bad_stab (orig);
2588 return FALSE;
2592 ++*pp;
2593 p = strchr (*pp, ';');
2594 if (p == NULL)
2596 bad_stab (orig);
2597 return FALSE;
2600 stub = FALSE;
2601 if (debug_get_type_kind (dhandle, type) == DEBUG_KIND_METHOD
2602 && debug_get_parameter_types (dhandle, type, &varargs) == NULL)
2603 stub = TRUE;
2605 argtypes = savestring (*pp, p - *pp);
2606 *pp = p + 1;
2608 switch (**pp)
2610 case '0':
2611 visibility = DEBUG_VISIBILITY_PRIVATE;
2612 break;
2613 case '1':
2614 visibility = DEBUG_VISIBILITY_PROTECTED;
2615 break;
2616 default:
2617 visibility = DEBUG_VISIBILITY_PUBLIC;
2618 break;
2620 ++*pp;
2622 constp = FALSE;
2623 volatilep = FALSE;
2624 switch (**pp)
2626 case 'A':
2627 /* Normal function. */
2628 ++*pp;
2629 break;
2630 case 'B':
2631 /* const member function. */
2632 constp = TRUE;
2633 ++*pp;
2634 break;
2635 case 'C':
2636 /* volatile member function. */
2637 volatilep = TRUE;
2638 ++*pp;
2639 break;
2640 case 'D':
2641 /* const volatile member function. */
2642 constp = TRUE;
2643 volatilep = TRUE;
2644 ++*pp;
2645 break;
2646 case '*':
2647 case '?':
2648 case '.':
2649 /* File compiled with g++ version 1; no information. */
2650 break;
2651 default:
2652 warn_stab (orig, _("const/volatile indicator missing"));
2653 break;
2656 staticp = FALSE;
2657 switch (**pp)
2659 case '*':
2660 /* virtual member function, followed by index. The sign
2661 bit is supposedly set to distinguish
2662 pointers-to-methods from virtual function indicies. */
2663 ++*pp;
2664 voffset = parse_number (pp, (bfd_boolean *) NULL);
2665 if (**pp != ';')
2667 bad_stab (orig);
2668 return FALSE;
2670 ++*pp;
2671 voffset &= 0x7fffffff;
2673 if (**pp == ';' || *pp == '\0')
2675 /* Must be g++ version 1. */
2676 context = DEBUG_TYPE_NULL;
2678 else
2680 /* Figure out from whence this virtual function
2681 came. It may belong to virtual function table of
2682 one of its baseclasses. */
2683 look_ahead_type = parse_stab_type (dhandle, info,
2684 (const char *) NULL,
2686 (debug_type **) NULL);
2687 if (**pp == ':')
2689 /* g++ version 1 overloaded methods. */
2690 context = DEBUG_TYPE_NULL;
2692 else
2694 context = look_ahead_type;
2695 look_ahead_type = DEBUG_TYPE_NULL;
2696 if (**pp != ';')
2698 bad_stab (orig);
2699 return FALSE;
2701 ++*pp;
2704 break;
2706 case '?':
2707 /* static member function. */
2708 ++*pp;
2709 staticp = TRUE;
2710 voffset = 0;
2711 context = DEBUG_TYPE_NULL;
2712 if (strncmp (argtypes, name, strlen (name)) != 0)
2713 stub = TRUE;
2714 break;
2716 default:
2717 warn_stab (orig, "member function type missing");
2718 voffset = 0;
2719 context = DEBUG_TYPE_NULL;
2720 break;
2722 case '.':
2723 ++*pp;
2724 voffset = 0;
2725 context = DEBUG_TYPE_NULL;
2726 break;
2729 /* If the type is not a stub, then the argtypes string is
2730 the physical name of the function. Otherwise the
2731 argtypes string is the mangled form of the argument
2732 types, and the full type and the physical name must be
2733 extracted from them. */
2734 if (! stub)
2735 physname = argtypes;
2736 else
2738 debug_type class_type, return_type;
2740 class_type = stab_find_type (dhandle, info, typenums);
2741 if (class_type == DEBUG_TYPE_NULL)
2742 return FALSE;
2743 return_type = debug_get_return_type (dhandle, type);
2744 if (return_type == DEBUG_TYPE_NULL)
2746 bad_stab (orig);
2747 return FALSE;
2749 type = parse_stab_argtypes (dhandle, info, class_type, name,
2750 tagname, return_type, argtypes,
2751 constp, volatilep, &physname);
2752 if (type == DEBUG_TYPE_NULL)
2753 return FALSE;
2756 if (cvars + 1 >= allocvars)
2758 allocvars += 10;
2759 variants = ((debug_method_variant *)
2760 xrealloc (variants,
2761 allocvars * sizeof *variants));
2764 if (! staticp)
2765 variants[cvars] = debug_make_method_variant (dhandle, physname,
2766 type, visibility,
2767 constp, volatilep,
2768 voffset, context);
2769 else
2770 variants[cvars] = debug_make_static_method_variant (dhandle,
2771 physname,
2772 type,
2773 visibility,
2774 constp,
2775 volatilep);
2776 if (variants[cvars] == DEBUG_METHOD_VARIANT_NULL)
2777 return FALSE;
2779 ++cvars;
2781 while (**pp != ';' && **pp != '\0');
2783 variants[cvars] = DEBUG_METHOD_VARIANT_NULL;
2785 if (**pp != '\0')
2786 ++*pp;
2788 if (c + 1 >= alloc)
2790 alloc += 10;
2791 methods = ((debug_method *)
2792 xrealloc (methods, alloc * sizeof *methods));
2795 methods[c] = debug_make_method (dhandle, name, variants);
2797 ++c;
2800 if (methods != NULL)
2801 methods[c] = DEBUG_METHOD_NULL;
2803 *retp = methods;
2805 return TRUE;
2808 /* Parse a string representing argument types for a method. Stabs
2809 tries to save space by packing argument types into a mangled
2810 string. This string should give us enough information to extract
2811 both argument types and the physical name of the function, given
2812 the tag name. */
2814 static debug_type
2815 parse_stab_argtypes (void *dhandle, struct stab_handle *info,
2816 debug_type class_type, const char *fieldname,
2817 const char *tagname, debug_type return_type,
2818 const char *argtypes, bfd_boolean constp,
2819 bfd_boolean volatilep, const char **pphysname)
2821 bfd_boolean is_full_physname_constructor;
2822 bfd_boolean is_constructor;
2823 bfd_boolean is_destructor;
2824 bfd_boolean is_v3;
2825 debug_type *args;
2826 bfd_boolean varargs;
2827 unsigned int physname_len = 0;
2829 /* Constructors are sometimes handled specially. */
2830 is_full_physname_constructor = ((argtypes[0] == '_'
2831 && argtypes[1] == '_'
2832 && (ISDIGIT (argtypes[2])
2833 || argtypes[2] == 'Q'
2834 || argtypes[2] == 't'))
2835 || strncmp (argtypes, "__ct", 4) == 0);
2837 is_constructor = (is_full_physname_constructor
2838 || (tagname != NULL
2839 && strcmp (fieldname, tagname) == 0));
2840 is_destructor = ((argtypes[0] == '_'
2841 && (argtypes[1] == '$' || argtypes[1] == '.')
2842 && argtypes[2] == '_')
2843 || strncmp (argtypes, "__dt", 4) == 0);
2844 is_v3 = argtypes[0] == '_' && argtypes[1] == 'Z';
2846 if (is_destructor || is_full_physname_constructor || is_v3)
2847 *pphysname = argtypes;
2848 else
2850 unsigned int len;
2851 const char *const_prefix;
2852 const char *volatile_prefix;
2853 char buf[20];
2854 unsigned int mangled_name_len;
2855 char *physname;
2857 len = tagname == NULL ? 0 : strlen (tagname);
2858 const_prefix = constp ? "C" : "";
2859 volatile_prefix = volatilep ? "V" : "";
2861 if (len == 0)
2862 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
2863 else if (tagname != NULL && strchr (tagname, '<') != NULL)
2865 /* Template methods are fully mangled. */
2866 sprintf (buf, "__%s%s", const_prefix, volatile_prefix);
2867 tagname = NULL;
2868 len = 0;
2870 else
2871 sprintf (buf, "__%s%s%d", const_prefix, volatile_prefix, len);
2873 mangled_name_len = ((is_constructor ? 0 : strlen (fieldname))
2874 + strlen (buf)
2875 + len
2876 + strlen (argtypes)
2877 + 1);
2879 if (fieldname[0] == 'o'
2880 && fieldname[1] == 'p'
2881 && (fieldname[2] == '$' || fieldname[2] == '.'))
2883 const char *opname;
2885 opname = cplus_mangle_opname (fieldname + 3, 0);
2886 if (opname == NULL)
2888 fprintf (stderr, _("No mangling for \"%s\"\n"), fieldname);
2889 return DEBUG_TYPE_NULL;
2891 mangled_name_len += strlen (opname);
2892 physname = (char *) xmalloc (mangled_name_len);
2893 strncpy (physname, fieldname, 3);
2894 strcpy (physname + 3, opname);
2896 else
2898 physname = (char *) xmalloc (mangled_name_len);
2899 if (is_constructor)
2900 physname[0] = '\0';
2901 else
2902 strcpy (physname, fieldname);
2905 physname_len = strlen (physname);
2906 strcat (physname, buf);
2907 if (tagname != NULL)
2908 strcat (physname, tagname);
2909 strcat (physname, argtypes);
2911 *pphysname = physname;
2914 if (*argtypes == '\0' || is_destructor)
2916 args = (debug_type *) xmalloc (sizeof *args);
2917 *args = NULL;
2918 return debug_make_method_type (dhandle, return_type, class_type, args,
2919 FALSE);
2922 args = stab_demangle_argtypes (dhandle, info, *pphysname, &varargs, physname_len);
2923 if (args == NULL)
2924 return DEBUG_TYPE_NULL;
2926 return debug_make_method_type (dhandle, return_type, class_type, args,
2927 varargs);
2930 /* The tail end of stabs for C++ classes that contain a virtual function
2931 pointer contains a tilde, a %, and a type number.
2932 The type number refers to the base class (possibly this class itself) which
2933 contains the vtable pointer for the current class.
2935 This function is called when we have parsed all the method declarations,
2936 so we can look for the vptr base class info. */
2938 static bfd_boolean
2939 parse_stab_tilde_field (void *dhandle, struct stab_handle *info,
2940 const char **pp, const int *typenums,
2941 debug_type *retvptrbase, bfd_boolean *retownvptr)
2943 const char *orig;
2944 const char *hold;
2945 int vtypenums[2];
2947 *retvptrbase = DEBUG_TYPE_NULL;
2948 *retownvptr = FALSE;
2950 orig = *pp;
2952 /* If we are positioned at a ';', then skip it. */
2953 if (**pp == ';')
2954 ++*pp;
2956 if (**pp != '~')
2957 return TRUE;
2959 ++*pp;
2961 if (**pp == '=' || **pp == '+' || **pp == '-')
2963 /* Obsolete flags that used to indicate the presence of
2964 constructors and/or destructors. */
2965 ++*pp;
2968 if (**pp != '%')
2969 return TRUE;
2971 ++*pp;
2973 hold = *pp;
2975 /* The next number is the type number of the base class (possibly
2976 our own class) which supplies the vtable for this class. */
2977 if (! parse_stab_type_number (pp, vtypenums))
2978 return FALSE;
2980 if (vtypenums[0] == typenums[0]
2981 && vtypenums[1] == typenums[1])
2982 *retownvptr = TRUE;
2983 else
2985 debug_type vtype;
2986 const char *p;
2988 *pp = hold;
2990 vtype = parse_stab_type (dhandle, info, (const char *) NULL, pp,
2991 (debug_type **) NULL);
2992 for (p = *pp; *p != ';' && *p != '\0'; p++)
2994 if (*p != ';')
2996 bad_stab (orig);
2997 return FALSE;
3000 *retvptrbase = vtype;
3002 *pp = p + 1;
3005 return TRUE;
3008 /* Read a definition of an array type. */
3010 static debug_type
3011 parse_stab_array_type (void *dhandle, struct stab_handle *info,
3012 const char **pp, bfd_boolean stringp)
3014 const char *orig;
3015 const char *p;
3016 int typenums[2];
3017 debug_type index_type;
3018 bfd_boolean adjustable;
3019 bfd_signed_vma lower, upper;
3020 debug_type element_type;
3022 /* Format of an array type:
3023 "ar<index type>;lower;upper;<array_contents_type>".
3024 OS9000: "arlower,upper;<array_contents_type>".
3026 Fortran adjustable arrays use Adigits or Tdigits for lower or upper;
3027 for these, produce a type like float[][]. */
3029 orig = *pp;
3031 /* FIXME: gdb checks os9k_stabs here. */
3033 /* If the index type is type 0, we take it as int. */
3034 p = *pp;
3035 if (! parse_stab_type_number (&p, typenums))
3036 return DEBUG_TYPE_NULL;
3037 if (typenums[0] == 0 && typenums[1] == 0 && **pp != '=')
3039 index_type = debug_find_named_type (dhandle, "int");
3040 if (index_type == DEBUG_TYPE_NULL)
3042 index_type = debug_make_int_type (dhandle, 4, FALSE);
3043 if (index_type == DEBUG_TYPE_NULL)
3044 return DEBUG_TYPE_NULL;
3046 *pp = p;
3048 else
3050 index_type = parse_stab_type (dhandle, info, (const char *) NULL, pp,
3051 (debug_type **) NULL);
3054 if (**pp != ';')
3056 bad_stab (orig);
3057 return DEBUG_TYPE_NULL;
3059 ++*pp;
3061 adjustable = FALSE;
3063 if (! ISDIGIT (**pp) && **pp != '-')
3065 ++*pp;
3066 adjustable = TRUE;
3069 lower = (bfd_signed_vma) parse_number (pp, (bfd_boolean *) NULL);
3070 if (**pp != ';')
3072 bad_stab (orig);
3073 return DEBUG_TYPE_NULL;
3075 ++*pp;
3077 if (! ISDIGIT (**pp) && **pp != '-')
3079 ++*pp;
3080 adjustable = TRUE;
3083 upper = (bfd_signed_vma) parse_number (pp, (bfd_boolean *) NULL);
3084 if (**pp != ';')
3086 bad_stab (orig);
3087 return DEBUG_TYPE_NULL;
3089 ++*pp;
3091 element_type = parse_stab_type (dhandle, info, (const char *) NULL, pp,
3092 (debug_type **) NULL);
3093 if (element_type == DEBUG_TYPE_NULL)
3094 return DEBUG_TYPE_NULL;
3096 if (adjustable)
3098 lower = 0;
3099 upper = -1;
3102 return debug_make_array_type (dhandle, element_type, index_type, lower,
3103 upper, stringp);
3106 /* This struct holds information about files we have seen using
3107 N_BINCL. */
3109 struct bincl_file
3111 /* The next N_BINCL file. */
3112 struct bincl_file *next;
3113 /* The next N_BINCL on the stack. */
3114 struct bincl_file *next_stack;
3115 /* The file name. */
3116 const char *name;
3117 /* The hash value. */
3118 bfd_vma hash;
3119 /* The file index. */
3120 unsigned int file;
3121 /* The list of types defined in this file. */
3122 struct stab_types *file_types;
3125 /* Start a new N_BINCL file, pushing it onto the stack. */
3127 static void
3128 push_bincl (struct stab_handle *info, const char *name, bfd_vma hash)
3130 struct bincl_file *n;
3132 n = (struct bincl_file *) xmalloc (sizeof *n);
3133 n->next = info->bincl_list;
3134 n->next_stack = info->bincl_stack;
3135 n->name = name;
3136 n->hash = hash;
3137 n->file = info->files;
3138 n->file_types = NULL;
3139 info->bincl_list = n;
3140 info->bincl_stack = n;
3142 ++info->files;
3143 info->file_types = ((struct stab_types **)
3144 xrealloc (info->file_types,
3145 (info->files
3146 * sizeof *info->file_types)));
3147 info->file_types[n->file] = NULL;
3150 /* Finish an N_BINCL file, at an N_EINCL, popping the name off the
3151 stack. */
3153 static const char *
3154 pop_bincl (struct stab_handle *info)
3156 struct bincl_file *o;
3158 o = info->bincl_stack;
3159 if (o == NULL)
3160 return info->main_filename;
3161 info->bincl_stack = o->next_stack;
3163 o->file_types = info->file_types[o->file];
3165 if (info->bincl_stack == NULL)
3166 return info->main_filename;
3167 return info->bincl_stack->name;
3170 /* Handle an N_EXCL: get the types from the corresponding N_BINCL. */
3172 static bfd_boolean
3173 find_excl (struct stab_handle *info, const char *name, bfd_vma hash)
3175 struct bincl_file *l;
3177 ++info->files;
3178 info->file_types = ((struct stab_types **)
3179 xrealloc (info->file_types,
3180 (info->files
3181 * sizeof *info->file_types)));
3183 for (l = info->bincl_list; l != NULL; l = l->next)
3184 if (l->hash == hash && strcmp (l->name, name) == 0)
3185 break;
3186 if (l == NULL)
3188 warn_stab (name, _("Undefined N_EXCL"));
3189 info->file_types[info->files - 1] = NULL;
3190 return TRUE;
3193 info->file_types[info->files - 1] = l->file_types;
3195 return TRUE;
3198 /* Handle a variable definition. gcc emits variable definitions for a
3199 block before the N_LBRAC, so we must hold onto them until we see
3200 it. The SunPRO compiler emits variable definitions after the
3201 N_LBRAC, so we can call debug_record_variable immediately. */
3203 static bfd_boolean
3204 stab_record_variable (void *dhandle, struct stab_handle *info,
3205 const char *name, debug_type type,
3206 enum debug_var_kind kind, bfd_vma val)
3208 struct stab_pending_var *v;
3210 if ((kind == DEBUG_GLOBAL || kind == DEBUG_STATIC)
3211 || ! info->within_function
3212 || (info->gcc_compiled == 0 && info->n_opt_found))
3213 return debug_record_variable (dhandle, name, type, kind, val);
3215 v = (struct stab_pending_var *) xmalloc (sizeof *v);
3216 memset (v, 0, sizeof *v);
3218 v->next = info->pending;
3219 v->name = name;
3220 v->type = type;
3221 v->kind = kind;
3222 v->val = val;
3223 info->pending = v;
3225 return TRUE;
3228 /* Emit pending variable definitions. This is called after we see the
3229 N_LBRAC that starts the block. */
3231 static bfd_boolean
3232 stab_emit_pending_vars (void *dhandle, struct stab_handle *info)
3234 struct stab_pending_var *v;
3236 v = info->pending;
3237 while (v != NULL)
3239 struct stab_pending_var *next;
3241 if (! debug_record_variable (dhandle, v->name, v->type, v->kind, v->val))
3242 return FALSE;
3244 next = v->next;
3245 free (v);
3246 v = next;
3249 info->pending = NULL;
3251 return TRUE;
3254 /* Find the slot for a type in the database. */
3256 static debug_type *
3257 stab_find_slot (struct stab_handle *info, const int *typenums)
3259 int filenum;
3260 int index;
3261 struct stab_types **ps;
3263 filenum = typenums[0];
3264 index = typenums[1];
3266 if (filenum < 0 || (unsigned int) filenum >= info->files)
3268 fprintf (stderr, _("Type file number %d out of range\n"), filenum);
3269 return NULL;
3271 if (index < 0)
3273 fprintf (stderr, _("Type index number %d out of range\n"), index);
3274 return NULL;
3277 ps = info->file_types + filenum;
3279 while (index >= STAB_TYPES_SLOTS)
3281 if (*ps == NULL)
3283 *ps = (struct stab_types *) xmalloc (sizeof **ps);
3284 memset (*ps, 0, sizeof **ps);
3286 ps = &(*ps)->next;
3287 index -= STAB_TYPES_SLOTS;
3289 if (*ps == NULL)
3291 *ps = (struct stab_types *) xmalloc (sizeof **ps);
3292 memset (*ps, 0, sizeof **ps);
3295 return (*ps)->types + index;
3298 /* Find a type given a type number. If the type has not been
3299 allocated yet, create an indirect type. */
3301 static debug_type
3302 stab_find_type (void *dhandle, struct stab_handle *info, const int *typenums)
3304 debug_type *slot;
3306 if (typenums[0] == 0 && typenums[1] < 0)
3308 /* A negative type number indicates an XCOFF builtin type. */
3309 return stab_xcoff_builtin_type (dhandle, info, typenums[1]);
3312 slot = stab_find_slot (info, typenums);
3313 if (slot == NULL)
3314 return DEBUG_TYPE_NULL;
3316 if (*slot == DEBUG_TYPE_NULL)
3317 return debug_make_indirect_type (dhandle, slot, (const char *) NULL);
3319 return *slot;
3322 /* Record that a given type number refers to a given type. */
3324 static bfd_boolean
3325 stab_record_type (void *dhandle ATTRIBUTE_UNUSED, struct stab_handle *info,
3326 const int *typenums, debug_type type)
3328 debug_type *slot;
3330 slot = stab_find_slot (info, typenums);
3331 if (slot == NULL)
3332 return FALSE;
3334 /* gdb appears to ignore type redefinitions, so we do as well. */
3336 *slot = type;
3338 return TRUE;
3341 /* Return an XCOFF builtin type. */
3343 static debug_type
3344 stab_xcoff_builtin_type (void *dhandle, struct stab_handle *info,
3345 int typenum)
3347 debug_type rettype;
3348 const char *name;
3350 if (typenum >= 0 || typenum < -XCOFF_TYPE_COUNT)
3352 fprintf (stderr, _("Unrecognized XCOFF type %d\n"), typenum);
3353 return DEBUG_TYPE_NULL;
3355 if (info->xcoff_types[-typenum] != NULL)
3356 return info->xcoff_types[-typenum];
3358 switch (-typenum)
3360 case 1:
3361 /* The size of this and all the other types are fixed, defined
3362 by the debugging format. */
3363 name = "int";
3364 rettype = debug_make_int_type (dhandle, 4, FALSE);
3365 break;
3366 case 2:
3367 name = "char";
3368 rettype = debug_make_int_type (dhandle, 1, FALSE);
3369 break;
3370 case 3:
3371 name = "short";
3372 rettype = debug_make_int_type (dhandle, 2, FALSE);
3373 break;
3374 case 4:
3375 name = "long";
3376 rettype = debug_make_int_type (dhandle, 4, FALSE);
3377 break;
3378 case 5:
3379 name = "unsigned char";
3380 rettype = debug_make_int_type (dhandle, 1, TRUE);
3381 break;
3382 case 6:
3383 name = "signed char";
3384 rettype = debug_make_int_type (dhandle, 1, FALSE);
3385 break;
3386 case 7:
3387 name = "unsigned short";
3388 rettype = debug_make_int_type (dhandle, 2, TRUE);
3389 break;
3390 case 8:
3391 name = "unsigned int";
3392 rettype = debug_make_int_type (dhandle, 4, TRUE);
3393 break;
3394 case 9:
3395 name = "unsigned";
3396 rettype = debug_make_int_type (dhandle, 4, TRUE);
3397 case 10:
3398 name = "unsigned long";
3399 rettype = debug_make_int_type (dhandle, 4, TRUE);
3400 break;
3401 case 11:
3402 name = "void";
3403 rettype = debug_make_void_type (dhandle);
3404 break;
3405 case 12:
3406 /* IEEE single precision (32 bit). */
3407 name = "float";
3408 rettype = debug_make_float_type (dhandle, 4);
3409 break;
3410 case 13:
3411 /* IEEE double precision (64 bit). */
3412 name = "double";
3413 rettype = debug_make_float_type (dhandle, 8);
3414 break;
3415 case 14:
3416 /* This is an IEEE double on the RS/6000, and different machines
3417 with different sizes for "long double" should use different
3418 negative type numbers. See stabs.texinfo. */
3419 name = "long double";
3420 rettype = debug_make_float_type (dhandle, 8);
3421 break;
3422 case 15:
3423 name = "integer";
3424 rettype = debug_make_int_type (dhandle, 4, FALSE);
3425 break;
3426 case 16:
3427 name = "boolean";
3428 rettype = debug_make_bool_type (dhandle, 4);
3429 break;
3430 case 17:
3431 name = "short real";
3432 rettype = debug_make_float_type (dhandle, 4);
3433 break;
3434 case 18:
3435 name = "real";
3436 rettype = debug_make_float_type (dhandle, 8);
3437 break;
3438 case 19:
3439 /* FIXME */
3440 name = "stringptr";
3441 rettype = NULL;
3442 break;
3443 case 20:
3444 /* FIXME */
3445 name = "character";
3446 rettype = debug_make_int_type (dhandle, 1, TRUE);
3447 break;
3448 case 21:
3449 name = "logical*1";
3450 rettype = debug_make_bool_type (dhandle, 1);
3451 break;
3452 case 22:
3453 name = "logical*2";
3454 rettype = debug_make_bool_type (dhandle, 2);
3455 break;
3456 case 23:
3457 name = "logical*4";
3458 rettype = debug_make_bool_type (dhandle, 4);
3459 break;
3460 case 24:
3461 name = "logical";
3462 rettype = debug_make_bool_type (dhandle, 4);
3463 break;
3464 case 25:
3465 /* Complex type consisting of two IEEE single precision values. */
3466 name = "complex";
3467 rettype = debug_make_complex_type (dhandle, 8);
3468 break;
3469 case 26:
3470 /* Complex type consisting of two IEEE double precision values. */
3471 name = "double complex";
3472 rettype = debug_make_complex_type (dhandle, 16);
3473 break;
3474 case 27:
3475 name = "integer*1";
3476 rettype = debug_make_int_type (dhandle, 1, FALSE);
3477 break;
3478 case 28:
3479 name = "integer*2";
3480 rettype = debug_make_int_type (dhandle, 2, FALSE);
3481 break;
3482 case 29:
3483 name = "integer*4";
3484 rettype = debug_make_int_type (dhandle, 4, FALSE);
3485 break;
3486 case 30:
3487 /* FIXME */
3488 name = "wchar";
3489 rettype = debug_make_int_type (dhandle, 2, FALSE);
3490 break;
3491 case 31:
3492 name = "long long";
3493 rettype = debug_make_int_type (dhandle, 8, FALSE);
3494 break;
3495 case 32:
3496 name = "unsigned long long";
3497 rettype = debug_make_int_type (dhandle, 8, TRUE);
3498 break;
3499 case 33:
3500 name = "logical*8";
3501 rettype = debug_make_bool_type (dhandle, 8);
3502 break;
3503 case 34:
3504 name = "integer*8";
3505 rettype = debug_make_int_type (dhandle, 8, FALSE);
3506 break;
3507 default:
3508 abort ();
3511 rettype = debug_name_type (dhandle, name, rettype);
3513 info->xcoff_types[-typenum] = rettype;
3515 return rettype;
3518 /* Find or create a tagged type. */
3520 static debug_type
3521 stab_find_tagged_type (void *dhandle, struct stab_handle *info,
3522 const char *p, int len, enum debug_type_kind kind)
3524 char *name;
3525 debug_type dtype;
3526 struct stab_tag *st;
3528 name = savestring (p, len);
3530 /* We pass DEBUG_KIND_ILLEGAL because we want all tags in the same
3531 namespace. This is right for C, and I don't know how to handle
3532 other languages. FIXME. */
3533 dtype = debug_find_tagged_type (dhandle, name, DEBUG_KIND_ILLEGAL);
3534 if (dtype != DEBUG_TYPE_NULL)
3536 free (name);
3537 return dtype;
3540 /* We need to allocate an entry on the undefined tag list. */
3541 for (st = info->tags; st != NULL; st = st->next)
3543 if (st->name[0] == name[0]
3544 && strcmp (st->name, name) == 0)
3546 if (st->kind == DEBUG_KIND_ILLEGAL)
3547 st->kind = kind;
3548 free (name);
3549 break;
3552 if (st == NULL)
3554 st = (struct stab_tag *) xmalloc (sizeof *st);
3555 memset (st, 0, sizeof *st);
3557 st->next = info->tags;
3558 st->name = name;
3559 st->kind = kind;
3560 st->slot = DEBUG_TYPE_NULL;
3561 st->type = debug_make_indirect_type (dhandle, &st->slot, name);
3562 info->tags = st;
3565 return st->type;
3568 /* In order to get the correct argument types for a stubbed method, we
3569 need to extract the argument types from a C++ mangled string.
3570 Since the argument types can refer back to the return type, this
3571 means that we must demangle the entire physical name. In gdb this
3572 is done by calling cplus_demangle and running the results back
3573 through the C++ expression parser. Since we have no expression
3574 parser, we must duplicate much of the work of cplus_demangle here.
3576 We assume that GNU style demangling is used, since this is only
3577 done for method stubs, and only g++ should output that form of
3578 debugging information. */
3580 /* This structure is used to hold a pointer to type information which
3581 demangling a string. */
3583 struct stab_demangle_typestring
3585 /* The start of the type. This is not null terminated. */
3586 const char *typestring;
3587 /* The length of the type. */
3588 unsigned int len;
3591 /* This structure is used to hold information while demangling a
3592 string. */
3594 struct stab_demangle_info
3596 /* The debugging information handle. */
3597 void *dhandle;
3598 /* The stab information handle. */
3599 struct stab_handle *info;
3600 /* The array of arguments we are building. */
3601 debug_type *args;
3602 /* Whether the method takes a variable number of arguments. */
3603 bfd_boolean varargs;
3604 /* The array of types we have remembered. */
3605 struct stab_demangle_typestring *typestrings;
3606 /* The number of typestrings. */
3607 unsigned int typestring_count;
3608 /* The number of typestring slots we have allocated. */
3609 unsigned int typestring_alloc;
3612 static void stab_bad_demangle (const char *);
3613 static unsigned int stab_demangle_count (const char **);
3614 static bfd_boolean stab_demangle_get_count (const char **, unsigned int *);
3615 static bfd_boolean stab_demangle_prefix
3616 (struct stab_demangle_info *, const char **, unsigned int);
3617 static bfd_boolean stab_demangle_function_name
3618 (struct stab_demangle_info *, const char **, const char *);
3619 static bfd_boolean stab_demangle_signature
3620 (struct stab_demangle_info *, const char **);
3621 static bfd_boolean stab_demangle_qualified
3622 (struct stab_demangle_info *, const char **, debug_type *);
3623 static bfd_boolean stab_demangle_template
3624 (struct stab_demangle_info *, const char **, char **);
3625 static bfd_boolean stab_demangle_class
3626 (struct stab_demangle_info *, const char **, const char **);
3627 static bfd_boolean stab_demangle_args
3628 (struct stab_demangle_info *, const char **, debug_type **, bfd_boolean *);
3629 static bfd_boolean stab_demangle_arg
3630 (struct stab_demangle_info *, const char **, debug_type **,
3631 unsigned int *, unsigned int *);
3632 static bfd_boolean stab_demangle_type
3633 (struct stab_demangle_info *, const char **, debug_type *);
3634 static bfd_boolean stab_demangle_fund_type
3635 (struct stab_demangle_info *, const char **, debug_type *);
3636 static bfd_boolean stab_demangle_remember_type
3637 (struct stab_demangle_info *, const char *, int);
3639 /* Warn about a bad demangling. */
3641 static void
3642 stab_bad_demangle (const char *s)
3644 fprintf (stderr, _("bad mangled name `%s'\n"), s);
3647 /* Get a count from a stab string. */
3649 static unsigned int
3650 stab_demangle_count (const char **pp)
3652 unsigned int count;
3654 count = 0;
3655 while (ISDIGIT (**pp))
3657 count *= 10;
3658 count += **pp - '0';
3659 ++*pp;
3661 return count;
3664 /* Require a count in a string. The count may be multiple digits, in
3665 which case it must end in an underscore. */
3667 static bfd_boolean
3668 stab_demangle_get_count (const char **pp, unsigned int *pi)
3670 if (! ISDIGIT (**pp))
3671 return FALSE;
3673 *pi = **pp - '0';
3674 ++*pp;
3675 if (ISDIGIT (**pp))
3677 unsigned int count;
3678 const char *p;
3680 count = *pi;
3681 p = *pp;
3684 count *= 10;
3685 count += *p - '0';
3686 ++p;
3688 while (ISDIGIT (*p));
3689 if (*p == '_')
3691 *pp = p + 1;
3692 *pi = count;
3696 return TRUE;
3699 /* This function demangles a physical name, returning a NULL
3700 terminated array of argument types. */
3702 static debug_type *
3703 stab_demangle_argtypes (void *dhandle, struct stab_handle *info,
3704 const char *physname, bfd_boolean *pvarargs,
3705 unsigned int physname_len)
3707 struct stab_demangle_info minfo;
3709 /* Check for the g++ V3 ABI. */
3710 if (physname[0] == '_' && physname[1] == 'Z')
3711 return stab_demangle_v3_argtypes (dhandle, info, physname, pvarargs);
3713 minfo.dhandle = dhandle;
3714 minfo.info = info;
3715 minfo.args = NULL;
3716 minfo.varargs = FALSE;
3717 minfo.typestring_alloc = 10;
3718 minfo.typestrings = ((struct stab_demangle_typestring *)
3719 xmalloc (minfo.typestring_alloc
3720 * sizeof *minfo.typestrings));
3721 minfo.typestring_count = 0;
3723 /* cplus_demangle checks for special GNU mangled forms, but we can't
3724 see any of them in mangled method argument types. */
3726 if (! stab_demangle_prefix (&minfo, &physname, physname_len))
3727 goto error_return;
3729 if (*physname != '\0')
3731 if (! stab_demangle_signature (&minfo, &physname))
3732 goto error_return;
3735 free (minfo.typestrings);
3736 minfo.typestrings = NULL;
3738 if (minfo.args == NULL)
3739 fprintf (stderr, _("no argument types in mangled string\n"));
3741 *pvarargs = minfo.varargs;
3742 return minfo.args;
3744 error_return:
3745 if (minfo.typestrings != NULL)
3746 free (minfo.typestrings);
3747 return NULL;
3750 /* Demangle the prefix of the mangled name. */
3752 static bfd_boolean
3753 stab_demangle_prefix (struct stab_demangle_info *minfo, const char **pp,
3754 unsigned int physname_len)
3756 const char *scan;
3757 unsigned int i;
3759 /* cplus_demangle checks for global constructors and destructors,
3760 but we can't see them in mangled argument types. */
3762 if (physname_len)
3763 scan = *pp + physname_len;
3764 else
3766 /* Look for `__'. */
3767 scan = *pp;
3769 scan = strchr (scan, '_');
3770 while (scan != NULL && *++scan != '_');
3772 if (scan == NULL)
3774 stab_bad_demangle (*pp);
3775 return FALSE;
3778 --scan;
3780 /* We found `__'; move ahead to the last contiguous `__' pair. */
3781 i = strspn (scan, "_");
3782 if (i > 2)
3783 scan += i - 2;
3786 if (scan == *pp
3787 && (ISDIGIT (scan[2])
3788 || scan[2] == 'Q'
3789 || scan[2] == 't'))
3791 /* This is a GNU style constructor name. */
3792 *pp = scan + 2;
3793 return TRUE;
3795 else if (scan == *pp
3796 && ! ISDIGIT (scan[2])
3797 && scan[2] != 't')
3799 /* Look for the `__' that separates the prefix from the
3800 signature. */
3801 while (*scan == '_')
3802 ++scan;
3803 scan = strstr (scan, "__");
3804 if (scan == NULL || scan[2] == '\0')
3806 stab_bad_demangle (*pp);
3807 return FALSE;
3810 return stab_demangle_function_name (minfo, pp, scan);
3812 else if (scan[2] != '\0')
3814 /* The name doesn't start with `__', but it does contain `__'. */
3815 return stab_demangle_function_name (minfo, pp, scan);
3817 else
3819 stab_bad_demangle (*pp);
3820 return FALSE;
3822 /*NOTREACHED*/
3825 /* Demangle a function name prefix. The scan argument points to the
3826 double underscore which separates the function name from the
3827 signature. */
3829 static bfd_boolean
3830 stab_demangle_function_name (struct stab_demangle_info *minfo,
3831 const char **pp, const char *scan)
3833 const char *name;
3835 /* The string from *pp to scan is the name of the function. We
3836 don't care about the name, since we just looking for argument
3837 types. However, for conversion operators, the name may include a
3838 type which we must remember in order to handle backreferences. */
3840 name = *pp;
3841 *pp = scan + 2;
3843 if (*pp - name >= 5
3844 && strncmp (name, "type", 4) == 0
3845 && (name[4] == '$' || name[4] == '.'))
3847 const char *tem;
3849 /* This is a type conversion operator. */
3850 tem = name + 5;
3851 if (! stab_demangle_type (minfo, &tem, (debug_type *) NULL))
3852 return FALSE;
3854 else if (name[0] == '_'
3855 && name[1] == '_'
3856 && name[2] == 'o'
3857 && name[3] == 'p')
3859 const char *tem;
3861 /* This is a type conversion operator. */
3862 tem = name + 4;
3863 if (! stab_demangle_type (minfo, &tem, (debug_type *) NULL))
3864 return FALSE;
3867 return TRUE;
3870 /* Demangle the signature. This is where the argument types are
3871 found. */
3873 static bfd_boolean
3874 stab_demangle_signature (struct stab_demangle_info *minfo, const char **pp)
3876 const char *orig;
3877 bfd_boolean expect_func, func_done;
3878 const char *hold;
3880 orig = *pp;
3882 expect_func = FALSE;
3883 func_done = FALSE;
3884 hold = NULL;
3886 while (**pp != '\0')
3888 switch (**pp)
3890 case 'Q':
3891 hold = *pp;
3892 if (! stab_demangle_qualified (minfo, pp, (debug_type *) NULL)
3893 || ! stab_demangle_remember_type (minfo, hold, *pp - hold))
3894 return FALSE;
3895 expect_func = TRUE;
3896 hold = NULL;
3897 break;
3899 case 'S':
3900 /* Static member function. FIXME: Can this happen? */
3901 if (hold == NULL)
3902 hold = *pp;
3903 ++*pp;
3904 break;
3906 case 'C':
3907 /* Const member function. */
3908 if (hold == NULL)
3909 hold = *pp;
3910 ++*pp;
3911 break;
3913 case '0': case '1': case '2': case '3': case '4':
3914 case '5': case '6': case '7': case '8': case '9':
3915 if (hold == NULL)
3916 hold = *pp;
3917 if (! stab_demangle_class (minfo, pp, (const char **) NULL)
3918 || ! stab_demangle_remember_type (minfo, hold, *pp - hold))
3919 return FALSE;
3920 expect_func = TRUE;
3921 hold = NULL;
3922 break;
3924 case 'F':
3925 /* Function. I don't know if this actually happens with g++
3926 output. */
3927 hold = NULL;
3928 func_done = TRUE;
3929 ++*pp;
3930 if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs))
3931 return FALSE;
3932 break;
3934 case 't':
3935 /* Template. */
3936 if (hold == NULL)
3937 hold = *pp;
3938 if (! stab_demangle_template (minfo, pp, (char **) NULL)
3939 || ! stab_demangle_remember_type (minfo, hold, *pp - hold))
3940 return FALSE;
3941 hold = NULL;
3942 expect_func = TRUE;
3943 break;
3945 case '_':
3946 /* At the outermost level, we cannot have a return type
3947 specified, so if we run into another '_' at this point we
3948 are dealing with a mangled name that is either bogus, or
3949 has been mangled by some algorithm we don't know how to
3950 deal with. So just reject the entire demangling. */
3951 stab_bad_demangle (orig);
3952 return FALSE;
3954 default:
3955 /* Assume we have stumbled onto the first outermost function
3956 argument token, and start processing args. */
3957 func_done = TRUE;
3958 if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs))
3959 return FALSE;
3960 break;
3963 if (expect_func)
3965 func_done = TRUE;
3966 if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs))
3967 return FALSE;
3971 if (! func_done)
3973 /* With GNU style demangling, bar__3foo is 'foo::bar(void)', and
3974 bar__3fooi is 'foo::bar(int)'. We get here when we find the
3975 first case, and need to ensure that the '(void)' gets added
3976 to the current declp. */
3977 if (! stab_demangle_args (minfo, pp, &minfo->args, &minfo->varargs))
3978 return FALSE;
3981 return TRUE;
3984 /* Demangle a qualified name, such as "Q25Outer5Inner" which is the
3985 mangled form of "Outer::Inner". */
3987 static bfd_boolean
3988 stab_demangle_qualified (struct stab_demangle_info *minfo, const char **pp,
3989 debug_type *ptype)
3991 const char *orig;
3992 const char *p;
3993 unsigned int qualifiers;
3994 debug_type context;
3996 orig = *pp;
3998 switch ((*pp)[1])
4000 case '_':
4001 /* GNU mangled name with more than 9 classes. The count is
4002 preceded by an underscore (to distinguish it from the <= 9
4003 case) and followed by an underscore. */
4004 p = *pp + 2;
4005 if (! ISDIGIT (*p) || *p == '0')
4007 stab_bad_demangle (orig);
4008 return FALSE;
4010 qualifiers = atoi (p);
4011 while (ISDIGIT (*p))
4012 ++p;
4013 if (*p != '_')
4015 stab_bad_demangle (orig);
4016 return FALSE;
4018 *pp = p + 1;
4019 break;
4021 case '1': case '2': case '3': case '4': case '5':
4022 case '6': case '7': case '8': case '9':
4023 qualifiers = (*pp)[1] - '0';
4024 /* Skip an optional underscore after the count. */
4025 if ((*pp)[2] == '_')
4026 ++*pp;
4027 *pp += 2;
4028 break;
4030 case '0':
4031 default:
4032 stab_bad_demangle (orig);
4033 return FALSE;
4036 context = DEBUG_TYPE_NULL;
4038 /* Pick off the names. */
4039 while (qualifiers-- > 0)
4041 if (**pp == '_')
4042 ++*pp;
4043 if (**pp == 't')
4045 char *name;
4047 if (! stab_demangle_template (minfo, pp,
4048 ptype != NULL ? &name : NULL))
4049 return FALSE;
4051 if (ptype != NULL)
4053 context = stab_find_tagged_type (minfo->dhandle, minfo->info,
4054 name, strlen (name),
4055 DEBUG_KIND_CLASS);
4056 free (name);
4057 if (context == DEBUG_TYPE_NULL)
4058 return FALSE;
4061 else
4063 unsigned int len;
4065 len = stab_demangle_count (pp);
4066 if (strlen (*pp) < len)
4068 stab_bad_demangle (orig);
4069 return FALSE;
4072 if (ptype != NULL)
4074 const debug_field *fields;
4076 fields = NULL;
4077 if (context != DEBUG_TYPE_NULL)
4078 fields = debug_get_fields (minfo->dhandle, context);
4080 context = DEBUG_TYPE_NULL;
4082 if (fields != NULL)
4084 char *name;
4086 /* Try to find the type by looking through the
4087 fields of context until we find a field with the
4088 same type. This ought to work for a class
4089 defined within a class, but it won't work for,
4090 e.g., an enum defined within a class. stabs does
4091 not give us enough information to figure out the
4092 latter case. */
4094 name = savestring (*pp, len);
4096 for (; *fields != DEBUG_FIELD_NULL; fields++)
4098 debug_type ft;
4099 const char *dn;
4101 ft = debug_get_field_type (minfo->dhandle, *fields);
4102 if (ft == NULL)
4103 return FALSE;
4104 dn = debug_get_type_name (minfo->dhandle, ft);
4105 if (dn != NULL && strcmp (dn, name) == 0)
4107 context = ft;
4108 break;
4112 free (name);
4115 if (context == DEBUG_TYPE_NULL)
4117 /* We have to fall back on finding the type by name.
4118 If there are more types to come, then this must
4119 be a class. Otherwise, it could be anything. */
4121 if (qualifiers == 0)
4123 char *name;
4125 name = savestring (*pp, len);
4126 context = debug_find_named_type (minfo->dhandle,
4127 name);
4128 free (name);
4131 if (context == DEBUG_TYPE_NULL)
4133 context = stab_find_tagged_type (minfo->dhandle,
4134 minfo->info,
4135 *pp, len,
4136 (qualifiers == 0
4137 ? DEBUG_KIND_ILLEGAL
4138 : DEBUG_KIND_CLASS));
4139 if (context == DEBUG_TYPE_NULL)
4140 return FALSE;
4145 *pp += len;
4149 if (ptype != NULL)
4150 *ptype = context;
4152 return TRUE;
4155 /* Demangle a template. If PNAME is not NULL, this sets *PNAME to a
4156 string representation of the template. */
4158 static bfd_boolean
4159 stab_demangle_template (struct stab_demangle_info *minfo, const char **pp,
4160 char **pname)
4162 const char *orig;
4163 unsigned int r, i;
4165 orig = *pp;
4167 ++*pp;
4169 /* Skip the template name. */
4170 r = stab_demangle_count (pp);
4171 if (r == 0 || strlen (*pp) < r)
4173 stab_bad_demangle (orig);
4174 return FALSE;
4176 *pp += r;
4178 /* Get the size of the parameter list. */
4179 if (stab_demangle_get_count (pp, &r) == 0)
4181 stab_bad_demangle (orig);
4182 return FALSE;
4185 for (i = 0; i < r; i++)
4187 if (**pp == 'Z')
4189 /* This is a type parameter. */
4190 ++*pp;
4191 if (! stab_demangle_type (minfo, pp, (debug_type *) NULL))
4192 return FALSE;
4194 else
4196 const char *old_p;
4197 bfd_boolean pointerp, realp, integralp, charp, boolp;
4198 bfd_boolean done;
4200 old_p = *pp;
4201 pointerp = FALSE;
4202 realp = FALSE;
4203 integralp = FALSE;
4204 charp = FALSE;
4205 boolp = FALSE;
4206 done = FALSE;
4208 /* This is a value parameter. */
4210 if (! stab_demangle_type (minfo, pp, (debug_type *) NULL))
4211 return FALSE;
4213 while (*old_p != '\0' && ! done)
4215 switch (*old_p)
4217 case 'P':
4218 case 'p':
4219 case 'R':
4220 pointerp = TRUE;
4221 done = TRUE;
4222 break;
4223 case 'C': /* Const. */
4224 case 'S': /* Signed. */
4225 case 'U': /* Unsigned. */
4226 case 'V': /* Volatile. */
4227 case 'F': /* Function. */
4228 case 'M': /* Member function. */
4229 case 'O': /* ??? */
4230 ++old_p;
4231 break;
4232 case 'Q': /* Qualified name. */
4233 integralp = TRUE;
4234 done = TRUE;
4235 break;
4236 case 'T': /* Remembered type. */
4237 abort ();
4238 case 'v': /* Void. */
4239 abort ();
4240 case 'x': /* Long long. */
4241 case 'l': /* Long. */
4242 case 'i': /* Int. */
4243 case 's': /* Short. */
4244 case 'w': /* Wchar_t. */
4245 integralp = TRUE;
4246 done = TRUE;
4247 break;
4248 case 'b': /* Bool. */
4249 boolp = TRUE;
4250 done = TRUE;
4251 break;
4252 case 'c': /* Char. */
4253 charp = TRUE;
4254 done = TRUE;
4255 break;
4256 case 'r': /* Long double. */
4257 case 'd': /* Double. */
4258 case 'f': /* Float. */
4259 realp = TRUE;
4260 done = TRUE;
4261 break;
4262 default:
4263 /* Assume it's a user defined integral type. */
4264 integralp = TRUE;
4265 done = TRUE;
4266 break;
4270 if (integralp)
4272 if (**pp == 'm')
4273 ++*pp;
4274 while (ISDIGIT (**pp))
4275 ++*pp;
4277 else if (charp)
4279 unsigned int val;
4281 if (**pp == 'm')
4282 ++*pp;
4283 val = stab_demangle_count (pp);
4284 if (val == 0)
4286 stab_bad_demangle (orig);
4287 return FALSE;
4290 else if (boolp)
4292 unsigned int val;
4294 val = stab_demangle_count (pp);
4295 if (val != 0 && val != 1)
4297 stab_bad_demangle (orig);
4298 return FALSE;
4301 else if (realp)
4303 if (**pp == 'm')
4304 ++*pp;
4305 while (ISDIGIT (**pp))
4306 ++*pp;
4307 if (**pp == '.')
4309 ++*pp;
4310 while (ISDIGIT (**pp))
4311 ++*pp;
4313 if (**pp == 'e')
4315 ++*pp;
4316 while (ISDIGIT (**pp))
4317 ++*pp;
4320 else if (pointerp)
4322 unsigned int len;
4324 len = stab_demangle_count (pp);
4325 if (len == 0)
4327 stab_bad_demangle (orig);
4328 return FALSE;
4330 *pp += len;
4335 /* We can translate this to a string fairly easily by invoking the
4336 regular demangling routine. */
4337 if (pname != NULL)
4339 char *s1, *s2, *s3, *s4 = NULL;
4340 char *from, *to;
4342 s1 = savestring (orig, *pp - orig);
4344 s2 = concat ("NoSuchStrinG__", s1, (const char *) NULL);
4346 free (s1);
4348 s3 = cplus_demangle (s2, DMGL_ANSI);
4350 free (s2);
4352 if (s3 != NULL)
4353 s4 = strstr (s3, "::NoSuchStrinG");
4354 if (s3 == NULL || s4 == NULL)
4356 stab_bad_demangle (orig);
4357 if (s3 != NULL)
4358 free (s3);
4359 return FALSE;
4362 /* Eliminating all spaces, except those between > characters,
4363 makes it more likely that the demangled name will match the
4364 name which g++ used as the structure name. */
4365 for (from = to = s3; from != s4; ++from)
4366 if (*from != ' '
4367 || (from[1] == '>' && from > s3 && from[-1] == '>'))
4368 *to++ = *from;
4370 *pname = savestring (s3, to - s3);
4372 free (s3);
4375 return TRUE;
4378 /* Demangle a class name. */
4380 static bfd_boolean
4381 stab_demangle_class (struct stab_demangle_info *minfo ATTRIBUTE_UNUSED,
4382 const char **pp, const char **pstart)
4384 const char *orig;
4385 unsigned int n;
4387 orig = *pp;
4389 n = stab_demangle_count (pp);
4390 if (strlen (*pp) < n)
4392 stab_bad_demangle (orig);
4393 return FALSE;
4396 if (pstart != NULL)
4397 *pstart = *pp;
4399 *pp += n;
4401 return TRUE;
4404 /* Demangle function arguments. If the pargs argument is not NULL, it
4405 is set to a NULL terminated array holding the arguments. */
4407 static bfd_boolean
4408 stab_demangle_args (struct stab_demangle_info *minfo, const char **pp,
4409 debug_type **pargs, bfd_boolean *pvarargs)
4411 const char *orig;
4412 unsigned int alloc, count;
4414 orig = *pp;
4416 alloc = 10;
4417 if (pargs != NULL)
4419 *pargs = (debug_type *) xmalloc (alloc * sizeof **pargs);
4420 *pvarargs = FALSE;
4422 count = 0;
4424 while (**pp != '_' && **pp != '\0' && **pp != 'e')
4426 if (**pp == 'N' || **pp == 'T')
4428 char temptype;
4429 unsigned int r, t;
4431 temptype = **pp;
4432 ++*pp;
4434 if (temptype == 'T')
4435 r = 1;
4436 else
4438 if (! stab_demangle_get_count (pp, &r))
4440 stab_bad_demangle (orig);
4441 return FALSE;
4445 if (! stab_demangle_get_count (pp, &t))
4447 stab_bad_demangle (orig);
4448 return FALSE;
4451 if (t >= minfo->typestring_count)
4453 stab_bad_demangle (orig);
4454 return FALSE;
4456 while (r-- > 0)
4458 const char *tem;
4460 tem = minfo->typestrings[t].typestring;
4461 if (! stab_demangle_arg (minfo, &tem, pargs, &count, &alloc))
4462 return FALSE;
4465 else
4467 if (! stab_demangle_arg (minfo, pp, pargs, &count, &alloc))
4468 return FALSE;
4472 if (pargs != NULL)
4473 (*pargs)[count] = DEBUG_TYPE_NULL;
4475 if (**pp == 'e')
4477 if (pargs != NULL)
4478 *pvarargs = TRUE;
4479 ++*pp;
4482 return TRUE;
4485 /* Demangle a single argument. */
4487 static bfd_boolean
4488 stab_demangle_arg (struct stab_demangle_info *minfo, const char **pp,
4489 debug_type **pargs, unsigned int *pcount,
4490 unsigned int *palloc)
4492 const char *start;
4493 debug_type type;
4495 start = *pp;
4496 if (! stab_demangle_type (minfo, pp,
4497 pargs == NULL ? (debug_type *) NULL : &type)
4498 || ! stab_demangle_remember_type (minfo, start, *pp - start))
4499 return FALSE;
4501 if (pargs != NULL)
4503 if (type == DEBUG_TYPE_NULL)
4504 return FALSE;
4506 if (*pcount + 1 >= *palloc)
4508 *palloc += 10;
4509 *pargs = ((debug_type *)
4510 xrealloc (*pargs, *palloc * sizeof **pargs));
4512 (*pargs)[*pcount] = type;
4513 ++*pcount;
4516 return TRUE;
4519 /* Demangle a type. If the ptype argument is not NULL, *ptype is set
4520 to the newly allocated type. */
4522 static bfd_boolean
4523 stab_demangle_type (struct stab_demangle_info *minfo, const char **pp,
4524 debug_type *ptype)
4526 const char *orig;
4528 orig = *pp;
4530 switch (**pp)
4532 case 'P':
4533 case 'p':
4534 /* A pointer type. */
4535 ++*pp;
4536 if (! stab_demangle_type (minfo, pp, ptype))
4537 return FALSE;
4538 if (ptype != NULL)
4539 *ptype = debug_make_pointer_type (minfo->dhandle, *ptype);
4540 break;
4542 case 'R':
4543 /* A reference type. */
4544 ++*pp;
4545 if (! stab_demangle_type (minfo, pp, ptype))
4546 return FALSE;
4547 if (ptype != NULL)
4548 *ptype = debug_make_reference_type (minfo->dhandle, *ptype);
4549 break;
4551 case 'A':
4552 /* An array. */
4554 unsigned long high;
4556 ++*pp;
4557 high = 0;
4558 while (**pp != '\0' && **pp != '_')
4560 if (! ISDIGIT (**pp))
4562 stab_bad_demangle (orig);
4563 return FALSE;
4565 high *= 10;
4566 high += **pp - '0';
4567 ++*pp;
4569 if (**pp != '_')
4571 stab_bad_demangle (orig);
4572 return FALSE;
4574 ++*pp;
4576 if (! stab_demangle_type (minfo, pp, ptype))
4577 return FALSE;
4578 if (ptype != NULL)
4580 debug_type int_type;
4582 int_type = debug_find_named_type (minfo->dhandle, "int");
4583 if (int_type == NULL)
4584 int_type = debug_make_int_type (minfo->dhandle, 4, FALSE);
4585 *ptype = debug_make_array_type (minfo->dhandle, *ptype, int_type,
4586 0, high, FALSE);
4589 break;
4591 case 'T':
4592 /* A back reference to a remembered type. */
4594 unsigned int i;
4595 const char *p;
4597 ++*pp;
4598 if (! stab_demangle_get_count (pp, &i))
4600 stab_bad_demangle (orig);
4601 return FALSE;
4603 if (i >= minfo->typestring_count)
4605 stab_bad_demangle (orig);
4606 return FALSE;
4608 p = minfo->typestrings[i].typestring;
4609 if (! stab_demangle_type (minfo, &p, ptype))
4610 return FALSE;
4612 break;
4614 case 'F':
4615 /* A function. */
4617 debug_type *args;
4618 bfd_boolean varargs;
4620 ++*pp;
4621 if (! stab_demangle_args (minfo, pp,
4622 (ptype == NULL
4623 ? (debug_type **) NULL
4624 : &args),
4625 (ptype == NULL
4626 ? (bfd_boolean *) NULL
4627 : &varargs)))
4628 return FALSE;
4629 if (**pp != '_')
4631 /* cplus_demangle will accept a function without a return
4632 type, but I don't know when that will happen, or what
4633 to do if it does. */
4634 stab_bad_demangle (orig);
4635 return FALSE;
4637 ++*pp;
4638 if (! stab_demangle_type (minfo, pp, ptype))
4639 return FALSE;
4640 if (ptype != NULL)
4641 *ptype = debug_make_function_type (minfo->dhandle, *ptype, args,
4642 varargs);
4645 break;
4647 case 'M':
4648 case 'O':
4650 bfd_boolean memberp, constp, volatilep;
4651 debug_type class_type = DEBUG_TYPE_NULL;
4652 debug_type *args;
4653 bfd_boolean varargs;
4654 unsigned int n;
4655 const char *name;
4657 memberp = **pp == 'M';
4658 constp = FALSE;
4659 volatilep = FALSE;
4660 args = NULL;
4661 varargs = FALSE;
4663 ++*pp;
4664 if (ISDIGIT (**pp))
4666 n = stab_demangle_count (pp);
4667 if (strlen (*pp) < n)
4669 stab_bad_demangle (orig);
4670 return FALSE;
4672 name = *pp;
4673 *pp += n;
4675 if (ptype != NULL)
4677 class_type = stab_find_tagged_type (minfo->dhandle,
4678 minfo->info,
4679 name, (int) n,
4680 DEBUG_KIND_CLASS);
4681 if (class_type == DEBUG_TYPE_NULL)
4682 return FALSE;
4685 else if (**pp == 'Q')
4687 if (! stab_demangle_qualified (minfo, pp,
4688 (ptype == NULL
4689 ? (debug_type *) NULL
4690 : &class_type)))
4691 return FALSE;
4693 else
4695 stab_bad_demangle (orig);
4696 return FALSE;
4699 if (memberp)
4701 if (**pp == 'C')
4703 constp = TRUE;
4704 ++*pp;
4706 else if (**pp == 'V')
4708 volatilep = TRUE;
4709 ++*pp;
4711 if (**pp != 'F')
4713 stab_bad_demangle (orig);
4714 return FALSE;
4716 ++*pp;
4717 if (! stab_demangle_args (minfo, pp,
4718 (ptype == NULL
4719 ? (debug_type **) NULL
4720 : &args),
4721 (ptype == NULL
4722 ? (bfd_boolean *) NULL
4723 : &varargs)))
4724 return FALSE;
4727 if (**pp != '_')
4729 stab_bad_demangle (orig);
4730 return FALSE;
4732 ++*pp;
4734 if (! stab_demangle_type (minfo, pp, ptype))
4735 return FALSE;
4737 if (ptype != NULL)
4739 if (! memberp)
4740 *ptype = debug_make_offset_type (minfo->dhandle, class_type,
4741 *ptype);
4742 else
4744 /* FIXME: We have no way to record constp or
4745 volatilep. */
4746 *ptype = debug_make_method_type (minfo->dhandle, *ptype,
4747 class_type, args, varargs);
4751 break;
4753 case 'G':
4754 ++*pp;
4755 if (! stab_demangle_type (minfo, pp, ptype))
4756 return FALSE;
4757 break;
4759 case 'C':
4760 ++*pp;
4761 if (! stab_demangle_type (minfo, pp, ptype))
4762 return FALSE;
4763 if (ptype != NULL)
4764 *ptype = debug_make_const_type (minfo->dhandle, *ptype);
4765 break;
4767 case 'Q':
4769 const char *hold;
4771 hold = *pp;
4772 if (! stab_demangle_qualified (minfo, pp, ptype))
4773 return FALSE;
4775 break;
4777 default:
4778 if (! stab_demangle_fund_type (minfo, pp, ptype))
4779 return FALSE;
4780 break;
4783 return TRUE;
4786 /* Demangle a fundamental type. If the ptype argument is not NULL,
4787 *ptype is set to the newly allocated type. */
4789 static bfd_boolean
4790 stab_demangle_fund_type (struct stab_demangle_info *minfo, const char **pp,
4791 debug_type *ptype)
4793 const char *orig;
4794 bfd_boolean constp, volatilep, unsignedp, signedp;
4795 bfd_boolean done;
4797 orig = *pp;
4799 constp = FALSE;
4800 volatilep = FALSE;
4801 unsignedp = FALSE;
4802 signedp = FALSE;
4804 done = FALSE;
4805 while (! done)
4807 switch (**pp)
4809 case 'C':
4810 constp = TRUE;
4811 ++*pp;
4812 break;
4814 case 'U':
4815 unsignedp = TRUE;
4816 ++*pp;
4817 break;
4819 case 'S':
4820 signedp = TRUE;
4821 ++*pp;
4822 break;
4824 case 'V':
4825 volatilep = TRUE;
4826 ++*pp;
4827 break;
4829 default:
4830 done = TRUE;
4831 break;
4835 switch (**pp)
4837 case '\0':
4838 case '_':
4839 /* cplus_demangle permits this, but I don't know what it means. */
4840 stab_bad_demangle (orig);
4841 break;
4843 case 'v': /* void */
4844 if (ptype != NULL)
4846 *ptype = debug_find_named_type (minfo->dhandle, "void");
4847 if (*ptype == DEBUG_TYPE_NULL)
4848 *ptype = debug_make_void_type (minfo->dhandle);
4850 ++*pp;
4851 break;
4853 case 'x': /* long long */
4854 if (ptype != NULL)
4856 *ptype = debug_find_named_type (minfo->dhandle,
4857 (unsignedp
4858 ? "long long unsigned int"
4859 : "long long int"));
4860 if (*ptype == DEBUG_TYPE_NULL)
4861 *ptype = debug_make_int_type (minfo->dhandle, 8, unsignedp);
4863 ++*pp;
4864 break;
4866 case 'l': /* long */
4867 if (ptype != NULL)
4869 *ptype = debug_find_named_type (minfo->dhandle,
4870 (unsignedp
4871 ? "long unsigned int"
4872 : "long int"));
4873 if (*ptype == DEBUG_TYPE_NULL)
4874 *ptype = debug_make_int_type (minfo->dhandle, 4, unsignedp);
4876 ++*pp;
4877 break;
4879 case 'i': /* int */
4880 if (ptype != NULL)
4882 *ptype = debug_find_named_type (minfo->dhandle,
4883 (unsignedp
4884 ? "unsigned int"
4885 : "int"));
4886 if (*ptype == DEBUG_TYPE_NULL)
4887 *ptype = debug_make_int_type (minfo->dhandle, 4, unsignedp);
4889 ++*pp;
4890 break;
4892 case 's': /* short */
4893 if (ptype != NULL)
4895 *ptype = debug_find_named_type (minfo->dhandle,
4896 (unsignedp
4897 ? "short unsigned int"
4898 : "short int"));
4899 if (*ptype == DEBUG_TYPE_NULL)
4900 *ptype = debug_make_int_type (minfo->dhandle, 2, unsignedp);
4902 ++*pp;
4903 break;
4905 case 'b': /* bool */
4906 if (ptype != NULL)
4908 *ptype = debug_find_named_type (minfo->dhandle, "bool");
4909 if (*ptype == DEBUG_TYPE_NULL)
4910 *ptype = debug_make_bool_type (minfo->dhandle, 4);
4912 ++*pp;
4913 break;
4915 case 'c': /* char */
4916 if (ptype != NULL)
4918 *ptype = debug_find_named_type (minfo->dhandle,
4919 (unsignedp
4920 ? "unsigned char"
4921 : (signedp
4922 ? "signed char"
4923 : "char")));
4924 if (*ptype == DEBUG_TYPE_NULL)
4925 *ptype = debug_make_int_type (minfo->dhandle, 1, unsignedp);
4927 ++*pp;
4928 break;
4930 case 'w': /* wchar_t */
4931 if (ptype != NULL)
4933 *ptype = debug_find_named_type (minfo->dhandle, "__wchar_t");
4934 if (*ptype == DEBUG_TYPE_NULL)
4935 *ptype = debug_make_int_type (minfo->dhandle, 2, TRUE);
4937 ++*pp;
4938 break;
4940 case 'r': /* long double */
4941 if (ptype != NULL)
4943 *ptype = debug_find_named_type (minfo->dhandle, "long double");
4944 if (*ptype == DEBUG_TYPE_NULL)
4945 *ptype = debug_make_float_type (minfo->dhandle, 8);
4947 ++*pp;
4948 break;
4950 case 'd': /* double */
4951 if (ptype != NULL)
4953 *ptype = debug_find_named_type (minfo->dhandle, "double");
4954 if (*ptype == DEBUG_TYPE_NULL)
4955 *ptype = debug_make_float_type (minfo->dhandle, 8);
4957 ++*pp;
4958 break;
4960 case 'f': /* float */
4961 if (ptype != NULL)
4963 *ptype = debug_find_named_type (minfo->dhandle, "float");
4964 if (*ptype == DEBUG_TYPE_NULL)
4965 *ptype = debug_make_float_type (minfo->dhandle, 4);
4967 ++*pp;
4968 break;
4970 case 'G':
4971 ++*pp;
4972 if (! ISDIGIT (**pp))
4974 stab_bad_demangle (orig);
4975 return FALSE;
4977 /* Fall through. */
4978 case '0': case '1': case '2': case '3': case '4':
4979 case '5': case '6': case '7': case '8': case '9':
4981 const char *hold;
4983 if (! stab_demangle_class (minfo, pp, &hold))
4984 return FALSE;
4985 if (ptype != NULL)
4987 char *name;
4989 name = savestring (hold, *pp - hold);
4990 *ptype = debug_find_named_type (minfo->dhandle, name);
4991 free (name);
4992 if (*ptype == DEBUG_TYPE_NULL)
4994 /* FIXME: It is probably incorrect to assume that
4995 undefined types are tagged types. */
4996 *ptype = stab_find_tagged_type (minfo->dhandle, minfo->info,
4997 hold, *pp - hold,
4998 DEBUG_KIND_ILLEGAL);
4999 if (*ptype == DEBUG_TYPE_NULL)
5000 return FALSE;
5004 break;
5006 case 't':
5008 char *name;
5010 if (! stab_demangle_template (minfo, pp,
5011 ptype != NULL ? &name : NULL))
5012 return FALSE;
5013 if (ptype != NULL)
5015 *ptype = stab_find_tagged_type (minfo->dhandle, minfo->info,
5016 name, strlen (name),
5017 DEBUG_KIND_CLASS);
5018 free (name);
5019 if (*ptype == DEBUG_TYPE_NULL)
5020 return FALSE;
5023 break;
5025 default:
5026 stab_bad_demangle (orig);
5027 return FALSE;
5030 if (ptype != NULL)
5032 if (constp)
5033 *ptype = debug_make_const_type (minfo->dhandle, *ptype);
5034 if (volatilep)
5035 *ptype = debug_make_volatile_type (minfo->dhandle, *ptype);
5038 return TRUE;
5041 /* Remember a type string in a demangled string. */
5043 static bfd_boolean
5044 stab_demangle_remember_type (struct stab_demangle_info *minfo,
5045 const char *p, int len)
5047 if (minfo->typestring_count >= minfo->typestring_alloc)
5049 minfo->typestring_alloc += 10;
5050 minfo->typestrings = ((struct stab_demangle_typestring *)
5051 xrealloc (minfo->typestrings,
5052 (minfo->typestring_alloc
5053 * sizeof *minfo->typestrings)));
5056 minfo->typestrings[minfo->typestring_count].typestring = p;
5057 minfo->typestrings[minfo->typestring_count].len = (unsigned int) len;
5058 ++minfo->typestring_count;
5060 return TRUE;
5063 /* Demangle names encoded using the g++ V3 ABI. The newer versions of
5064 g++ which use this ABI do not encode ordinary method argument types
5065 in a mangled name; they simply output the argument types. However,
5066 for a static method, g++ simply outputs the return type and the
5067 physical name. So in that case we need to demangle the name here.
5068 Here PHYSNAME is the physical name of the function, and we set the
5069 variable pointed at by PVARARGS to indicate whether this function
5070 is varargs. This returns NULL, or a NULL terminated array of
5071 argument types. */
5073 static debug_type *
5074 stab_demangle_v3_argtypes (void *dhandle, struct stab_handle *info,
5075 const char *physname, bfd_boolean *pvarargs)
5077 struct demangle_component *dc;
5078 void *mem;
5079 debug_type *pargs;
5081 dc = cplus_demangle_v3_components (physname, DMGL_PARAMS | DMGL_ANSI, &mem);
5082 if (dc == NULL)
5084 stab_bad_demangle (physname);
5085 return NULL;
5088 /* We expect to see TYPED_NAME, and the right subtree describes the
5089 function type. */
5090 if (dc->type != DEMANGLE_COMPONENT_TYPED_NAME
5091 || dc->u.s_binary.right->type != DEMANGLE_COMPONENT_FUNCTION_TYPE)
5093 fprintf (stderr, _("Demangled name is not a function\n"));
5094 free (mem);
5095 return NULL;
5098 pargs = stab_demangle_v3_arglist (dhandle, info,
5099 dc->u.s_binary.right->u.s_binary.right,
5100 pvarargs);
5102 free (mem);
5104 return pargs;
5107 /* Demangle an argument list in a struct demangle_component tree.
5108 Returns a DEBUG_TYPE_NULL terminated array of argument types, and
5109 sets *PVARARGS to indicate whether this is a varargs function. */
5111 static debug_type *
5112 stab_demangle_v3_arglist (void *dhandle, struct stab_handle *info,
5113 struct demangle_component *arglist,
5114 bfd_boolean *pvarargs)
5116 struct demangle_component *dc;
5117 unsigned int alloc, count;
5118 debug_type *pargs;
5120 alloc = 10;
5121 pargs = (debug_type *) xmalloc (alloc * sizeof *pargs);
5122 *pvarargs = FALSE;
5124 count = 0;
5126 for (dc = arglist;
5127 dc != NULL;
5128 dc = dc->u.s_binary.right)
5130 debug_type arg;
5131 bfd_boolean varargs;
5133 if (dc->type != DEMANGLE_COMPONENT_ARGLIST)
5135 fprintf (stderr, _("Unexpected type in v3 arglist demangling\n"));
5136 free (pargs);
5137 return NULL;
5140 arg = stab_demangle_v3_arg (dhandle, info, dc->u.s_binary.left,
5141 NULL, &varargs);
5142 if (arg == NULL)
5144 if (varargs)
5146 *pvarargs = TRUE;
5147 continue;
5149 free (pargs);
5150 return NULL;
5153 if (count + 1 >= alloc)
5155 alloc += 10;
5156 pargs = (debug_type *) xrealloc (pargs, alloc * sizeof *pargs);
5159 pargs[count] = arg;
5160 ++count;
5163 pargs[count] = DEBUG_TYPE_NULL;
5165 return pargs;
5168 /* Convert a struct demangle_component tree describing an argument
5169 type into a debug_type. */
5171 static debug_type
5172 stab_demangle_v3_arg (void *dhandle, struct stab_handle *info,
5173 struct demangle_component *dc, debug_type context,
5174 bfd_boolean *pvarargs)
5176 debug_type dt;
5178 if (pvarargs != NULL)
5179 *pvarargs = FALSE;
5181 switch (dc->type)
5183 /* FIXME: These are demangle component types which we probably
5184 need to handle one way or another. */
5185 case DEMANGLE_COMPONENT_LOCAL_NAME:
5186 case DEMANGLE_COMPONENT_TYPED_NAME:
5187 case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
5188 case DEMANGLE_COMPONENT_CTOR:
5189 case DEMANGLE_COMPONENT_DTOR:
5190 case DEMANGLE_COMPONENT_JAVA_CLASS:
5191 case DEMANGLE_COMPONENT_RESTRICT_THIS:
5192 case DEMANGLE_COMPONENT_VOLATILE_THIS:
5193 case DEMANGLE_COMPONENT_CONST_THIS:
5194 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
5195 case DEMANGLE_COMPONENT_COMPLEX:
5196 case DEMANGLE_COMPONENT_IMAGINARY:
5197 case DEMANGLE_COMPONENT_VENDOR_TYPE:
5198 case DEMANGLE_COMPONENT_ARRAY_TYPE:
5199 case DEMANGLE_COMPONENT_PTRMEM_TYPE:
5200 case DEMANGLE_COMPONENT_ARGLIST:
5201 default:
5202 fprintf (stderr, _("Unrecognized demangle component %d\n"),
5203 (int) dc->type);
5204 return NULL;
5206 case DEMANGLE_COMPONENT_NAME:
5207 if (context != NULL)
5209 const debug_field *fields;
5211 fields = debug_get_fields (dhandle, context);
5212 if (fields != NULL)
5214 /* Try to find this type by looking through the context
5215 class. */
5216 for (; *fields != DEBUG_FIELD_NULL; fields++)
5218 debug_type ft;
5219 const char *dn;
5221 ft = debug_get_field_type (dhandle, *fields);
5222 if (ft == NULL)
5223 return NULL;
5224 dn = debug_get_type_name (dhandle, ft);
5225 if (dn != NULL
5226 && (int) strlen (dn) == dc->u.s_name.len
5227 && strncmp (dn, dc->u.s_name.s, dc->u.s_name.len) == 0)
5228 return ft;
5232 return stab_find_tagged_type (dhandle, info, dc->u.s_name.s,
5233 dc->u.s_name.len, DEBUG_KIND_ILLEGAL);
5235 case DEMANGLE_COMPONENT_QUAL_NAME:
5236 context = stab_demangle_v3_arg (dhandle, info, dc->u.s_binary.left,
5237 context, NULL);
5238 if (context == NULL)
5239 return NULL;
5240 return stab_demangle_v3_arg (dhandle, info, dc->u.s_binary.right,
5241 context, NULL);
5243 case DEMANGLE_COMPONENT_TEMPLATE:
5245 char *p;
5246 size_t alc;
5248 /* We print this component to get a class name which we can
5249 use. FIXME: This probably won't work if the template uses
5250 template parameters which refer to an outer template. */
5251 p = cplus_demangle_print (DMGL_PARAMS | DMGL_ANSI, dc, 20, &alc);
5252 if (p == NULL)
5254 fprintf (stderr, _("Failed to print demangled template\n"));
5255 return NULL;
5257 dt = stab_find_tagged_type (dhandle, info, p, strlen (p),
5258 DEBUG_KIND_CLASS);
5259 free (p);
5260 return dt;
5263 case DEMANGLE_COMPONENT_SUB_STD:
5264 return stab_find_tagged_type (dhandle, info, dc->u.s_string.string,
5265 dc->u.s_string.len, DEBUG_KIND_ILLEGAL);
5267 case DEMANGLE_COMPONENT_RESTRICT:
5268 case DEMANGLE_COMPONENT_VOLATILE:
5269 case DEMANGLE_COMPONENT_CONST:
5270 case DEMANGLE_COMPONENT_POINTER:
5271 case DEMANGLE_COMPONENT_REFERENCE:
5272 dt = stab_demangle_v3_arg (dhandle, info, dc->u.s_binary.left, NULL,
5273 NULL);
5274 if (dt == NULL)
5275 return NULL;
5277 switch (dc->type)
5279 default:
5280 abort ();
5281 case DEMANGLE_COMPONENT_RESTRICT:
5282 /* FIXME: We have no way to represent restrict. */
5283 return dt;
5284 case DEMANGLE_COMPONENT_VOLATILE:
5285 return debug_make_volatile_type (dhandle, dt);
5286 case DEMANGLE_COMPONENT_CONST:
5287 return debug_make_const_type (dhandle, dt);
5288 case DEMANGLE_COMPONENT_POINTER:
5289 return debug_make_pointer_type (dhandle, dt);
5290 case DEMANGLE_COMPONENT_REFERENCE:
5291 return debug_make_reference_type (dhandle, dt);
5294 case DEMANGLE_COMPONENT_FUNCTION_TYPE:
5296 debug_type *pargs;
5297 bfd_boolean varargs;
5299 if (dc->u.s_binary.left == NULL)
5301 /* In this case the return type is actually unknown.
5302 However, I'm not sure this will ever arise in practice;
5303 normally an unknown return type would only appear at
5304 the top level, which is handled above. */
5305 dt = debug_make_void_type (dhandle);
5307 else
5308 dt = stab_demangle_v3_arg (dhandle, info, dc->u.s_binary.left, NULL,
5309 NULL);
5310 if (dt == NULL)
5311 return NULL;
5313 pargs = stab_demangle_v3_arglist (dhandle, info,
5314 dc->u.s_binary.right,
5315 &varargs);
5316 if (pargs == NULL)
5317 return NULL;
5319 return debug_make_function_type (dhandle, dt, pargs, varargs);
5322 case DEMANGLE_COMPONENT_BUILTIN_TYPE:
5324 char *p;
5325 size_t alc;
5326 debug_type ret;
5328 /* We print this component in order to find out the type name.
5329 FIXME: Should we instead expose the
5330 demangle_builtin_type_info structure? */
5331 p = cplus_demangle_print (DMGL_PARAMS | DMGL_ANSI, dc, 20, &alc);
5332 if (p == NULL)
5334 fprintf (stderr, _("Couldn't get demangled builtin type\n"));
5335 return NULL;
5338 /* The mangling is based on the type, but does not itself
5339 indicate what the sizes are. So we have to guess. */
5340 if (strcmp (p, "signed char") == 0)
5341 ret = debug_make_int_type (dhandle, 1, FALSE);
5342 else if (strcmp (p, "bool") == 0)
5343 ret = debug_make_bool_type (dhandle, 1);
5344 else if (strcmp (p, "char") == 0)
5345 ret = debug_make_int_type (dhandle, 1, FALSE);
5346 else if (strcmp (p, "double") == 0)
5347 ret = debug_make_float_type (dhandle, 8);
5348 else if (strcmp (p, "long double") == 0)
5349 ret = debug_make_float_type (dhandle, 8);
5350 else if (strcmp (p, "float") == 0)
5351 ret = debug_make_float_type (dhandle, 4);
5352 else if (strcmp (p, "__float128") == 0)
5353 ret = debug_make_float_type (dhandle, 16);
5354 else if (strcmp (p, "unsigned char") == 0)
5355 ret = debug_make_int_type (dhandle, 1, TRUE);
5356 else if (strcmp (p, "int") == 0)
5357 ret = debug_make_int_type (dhandle, 4, FALSE);
5358 else if (strcmp (p, "unsigned int") == 0)
5359 ret = debug_make_int_type (dhandle, 4, TRUE);
5360 else if (strcmp (p, "long") == 0)
5361 ret = debug_make_int_type (dhandle, 4, FALSE);
5362 else if (strcmp (p, "unsigned long") == 0)
5363 ret = debug_make_int_type (dhandle, 4, TRUE);
5364 else if (strcmp (p, "__int128") == 0)
5365 ret = debug_make_int_type (dhandle, 16, FALSE);
5366 else if (strcmp (p, "unsigned __int128") == 0)
5367 ret = debug_make_int_type (dhandle, 16, TRUE);
5368 else if (strcmp (p, "short") == 0)
5369 ret = debug_make_int_type (dhandle, 2, FALSE);
5370 else if (strcmp (p, "unsigned short") == 0)
5371 ret = debug_make_int_type (dhandle, 2, TRUE);
5372 else if (strcmp (p, "void") == 0)
5373 ret = debug_make_void_type (dhandle);
5374 else if (strcmp (p, "wchar_t") == 0)
5375 ret = debug_make_int_type (dhandle, 4, TRUE);
5376 else if (strcmp (p, "long long") == 0)
5377 ret = debug_make_int_type (dhandle, 8, FALSE);
5378 else if (strcmp (p, "unsigned long long") == 0)
5379 ret = debug_make_int_type (dhandle, 8, TRUE);
5380 else if (strcmp (p, "...") == 0)
5382 if (pvarargs == NULL)
5383 fprintf (stderr, _("Unexpected demangled varargs\n"));
5384 else
5385 *pvarargs = TRUE;
5386 ret = NULL;
5388 else
5390 fprintf (stderr, _("Unrecognized demangled builtin type\n"));
5391 ret = NULL;
5394 free (p);
5396 return ret;