1 /* Read a symbol table in ECOFF format (Third-Eye).
3 Copyright (C) 1986-2017 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
46 #include "filenames.h"
48 #include "gdb_obstack.h"
50 #include "stabsread.h"
51 #include "complaints.h"
53 #include "gdb-demangle.h"
55 #include "dictionary.h"
56 #include "mdebugread.h"
63 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files. */
65 #include "libaout.h" /* Private BFD a.out information. */
66 #include "aout/aout64.h"
67 #include "aout/stab_gnu.h" /* STABS information. */
69 #include "expression.h"
71 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
72 We use this define in order to know whether we should override a
73 symbol's ECOFF section with its ELF section. This is necessary in
74 case the symbol's ELF section could not be represented in ECOFF. */
75 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
76 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
78 /* The objfile we are currently reading. */
80 static struct objfile *mdebugread_objfile;
84 /* We put a pointer to this structure in the read_symtab_private field
89 /* Index of the FDR that this psymtab represents. */
91 /* The BFD that the psymtab was created from. */
93 const struct ecoff_debug_swap *debug_swap;
94 struct ecoff_debug_info *debug_info;
95 struct mdebug_pending **pending_list;
96 /* Pointer to external symbols for this file. */
98 /* Size of extern_tab. */
100 enum language pst_language;
103 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
104 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
105 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
106 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
107 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
108 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
110 #define SC_IS_TEXT(sc) ((sc) == scText \
111 || (sc) == scRConst \
114 #define SC_IS_DATA(sc) ((sc) == scData \
119 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
120 #define SC_IS_BSS(sc) ((sc) == scBss)
121 #define SC_IS_SBSS(sc) ((sc) == scSBss)
122 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
124 /* Various complaints about symbol reading that don't abort the process. */
126 index_complaint (const char *arg1)
128 complaint (&symfile_complaints, _("bad aux index at symbol %s"), arg1);
132 unknown_ext_complaint (const char *arg1)
134 complaint (&symfile_complaints, _("unknown external symbol %s"), arg1);
138 basic_type_complaint (int arg1, const char *arg2)
140 complaint (&symfile_complaints, _("cannot map ECOFF basic type 0x%x for %s"),
145 bad_tag_guess_complaint (const char *arg1)
147 complaint (&symfile_complaints,
148 _("guessed tag type of %s incorrectly"), arg1);
152 bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3)
154 complaint (&symfile_complaints, _("bad rfd entry for %s: file %d, index %d"),
159 unexpected_type_code_complaint (const char *arg1)
161 complaint (&symfile_complaints, _("unexpected type code for %s"), arg1);
164 /* Macros and extra defs. */
166 /* Puns: hard to find whether -g was used and how. */
168 #define MIN_GLEVEL GLEVEL_0
169 #define compare_glevel(a,b) \
170 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
171 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
173 /* Things that really are local to this module. */
175 /* Remember what we deduced to be the source language of this psymtab. */
177 static enum language psymtab_language = language_unknown;
183 /* How to parse debugging information for CUR_BFD. */
185 static const struct ecoff_debug_swap *debug_swap;
187 /* Pointers to debugging information for CUR_BFD. */
189 static struct ecoff_debug_info *debug_info;
191 /* Pointer to current file decriptor record, and its index. */
196 /* Index of current symbol. */
200 /* Note how much "debuggable" this image is. We would like
201 to see at least one FDR with full symbols. */
203 static int max_gdbinfo;
204 static int max_glevel;
206 /* When examining .o files, report on undefined symbols. */
208 static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
210 /* Pseudo symbol to use when putting stabs into the symbol table. */
212 static char stabs_symbol[] = STABS_SYMBOL;
214 /* Nonzero if we have seen ecoff debugging info for a file. */
216 static int found_ecoff_debugging_info;
218 /* Forward declarations. */
220 static int upgrade_type (int, struct type **, int, union aux_ext *,
223 static void parse_partial_symbols (minimal_symbol_reader &,
226 static int has_opaque_xref (FDR *, SYMR *);
228 static int cross_ref (int, union aux_ext *, struct type **, enum type_code,
229 const char **, int, const char *);
231 static struct symbol *new_symbol (const char *);
233 static struct type *new_type (char *);
235 enum block_type { FUNCTION_BLOCK, NON_FUNCTION_BLOCK };
237 static struct block *new_block (enum block_type);
239 static struct compunit_symtab *new_symtab (const char *, int, struct objfile *);
241 static struct linetable *new_linetable (int);
243 static struct blockvector *new_bvect (int);
245 static struct type *parse_type (int, union aux_ext *, unsigned int, int *,
248 static struct symbol *mylookup_symbol (const char *, const struct block *,
249 domain_enum, enum address_class);
251 static void sort_blocks (struct symtab *);
253 static struct partial_symtab *new_psymtab (const char *, struct objfile *);
255 static void psymtab_to_symtab_1 (struct objfile *objfile,
256 struct partial_symtab *, const char *);
258 static void add_block (struct block *, struct symtab *);
260 static void add_symbol (struct symbol *, struct symtab *, struct block *);
262 static int add_line (struct linetable *, int, CORE_ADDR, int);
264 static struct linetable *shrink_linetable (struct linetable *);
266 static void handle_psymbol_enumerators (struct objfile *, FDR *, int,
269 static const char *mdebug_next_symbol_text (struct objfile *);
271 /* Exported procedure: Builds a symtab from the partial symtab SELF.
272 Restores the environment in effect when SELF was created, delegates
273 most of the work to an ancillary procedure, and sorts
274 and reorders the symtab list at the end. SELF is not NULL. */
277 mdebug_read_symtab (struct partial_symtab *self, struct objfile *objfile)
281 printf_filtered (_("Reading in symbols for %s..."), self->filename);
282 gdb_flush (gdb_stdout);
285 next_symbol_text_func = mdebug_next_symbol_text;
287 psymtab_to_symtab_1 (objfile, self, self->filename);
289 /* Match with global symbols. This only needs to be done once,
290 after all of the symtabs and dependencies have been read in. */
291 scan_file_globals (objfile);
294 printf_filtered (_("done.\n"));
297 /* File-level interface functions. */
299 /* Find a file descriptor given its index RF relative to a file CF. */
302 get_rfd (int cf, int rf)
308 fdrs = debug_info->fdr;
310 /* Object files do not have the RFD table, all refs are absolute. */
313 (*debug_swap->swap_rfd_in) (cur_bfd,
314 ((char *) debug_info->external_rfd
316 * debug_swap->external_rfd_size)),
321 /* Return a safer print NAME for a file descriptor. */
327 return "<stripped file>";
330 return debug_info->ss + f->issBase + f->rss;
334 /* Read in and parse the symtab of the file OBJFILE. Symbols from
335 different sections are relocated via the SECTION_OFFSETS. */
338 mdebug_build_psymtabs (minimal_symbol_reader &reader,
339 struct objfile *objfile,
340 const struct ecoff_debug_swap *swap,
341 struct ecoff_debug_info *info)
343 cur_bfd = objfile->obfd;
347 stabsread_new_init ();
348 buildsym_new_init ();
349 free_header_files ();
350 init_header_files ();
352 /* Make sure all the FDR information is swapped in. */
353 if (info->fdr == (FDR *) NULL)
359 info->fdr = (FDR *) obstack_alloc (&objfile->objfile_obstack,
360 (info->symbolic_header.ifdMax
362 fdr_src = (char *) info->external_fdr;
364 + info->symbolic_header.ifdMax * swap->external_fdr_size);
366 for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)
367 (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr);
370 parse_partial_symbols (reader, objfile);
373 /* Check to make sure file was compiled with -g. If not, warn the
374 user of this limitation. */
375 if (compare_glevel (max_glevel, GLEVEL_2) < 0)
377 if (max_gdbinfo == 0)
378 printf_unfiltered (_("\n%s not compiled with -g, "
379 "debugging support is limited.\n"),
381 printf_unfiltered (_("You should compile with -g2 or "
382 "-g3 for best debugging support.\n"));
383 gdb_flush (gdb_stdout);
388 /* Local utilities */
390 /* Map of FDR indexes to partial symtabs. */
394 struct partial_symtab *pst; /* the psymtab proper */
395 long n_globals; /* exported globals (external symbols) */
396 long globals_offset; /* cumulative */
400 /* Utility stack, used to nest procedures and blocks properly.
401 It is a doubly linked list, to avoid too many alloc/free.
402 Since we might need it quite a few times it is NOT deallocated
405 static struct parse_stack
407 struct parse_stack *next, *prev;
408 struct symtab *cur_st; /* Current symtab. */
409 struct block *cur_block; /* Block in it. */
411 /* What are we parsing. stFile, or stBlock are for files and
412 blocks. stProc or stStaticProc means we have seen the start of a
413 procedure, but not the start of the block within in. When we see
414 the start of that block, we change it to stNil, without pushing a
415 new block, i.e. stNil means both a procedure and a block. */
419 struct type *cur_type; /* Type we parse fields for. */
420 int cur_field; /* Field number in cur_type. */
421 CORE_ADDR procadr; /* Start addres of this procedure. */
422 int numargs; /* Its argument count. */
425 *top_stack; /* Top stack ptr */
428 /* Enter a new lexical context. */
431 push_parse_stack (void)
433 struct parse_stack *newobj;
435 /* Reuse frames if possible. */
436 if (top_stack && top_stack->prev)
437 newobj = top_stack->prev;
439 newobj = XCNEW (struct parse_stack);
440 /* Initialize new frame with previous content. */
443 struct parse_stack *prev = newobj->prev;
445 *newobj = *top_stack;
446 top_stack->prev = newobj;
448 newobj->next = top_stack;
453 /* Exit a lexical context. */
456 pop_parse_stack (void)
461 top_stack = top_stack->next;
465 /* Cross-references might be to things we haven't looked at
466 yet, e.g. type references. To avoid too many type
467 duplications we keep a quick fixup table, an array
468 of lists of references indexed by file descriptor. */
470 struct mdebug_pending
472 struct mdebug_pending *next; /* link */
473 char *s; /* the unswapped symbol */
474 struct type *t; /* its partial type descriptor */
478 /* The pending information is kept for an entire object file. We
479 allocate the pending information table when we create the partial
480 symbols, and we store a pointer to the single table in each
483 static struct mdebug_pending **pending_list;
485 /* Check whether we already saw symbol SH in file FH. */
487 static struct mdebug_pending *
488 is_pending_symbol (FDR *fh, char *sh)
490 int f_idx = fh - debug_info->fdr;
491 struct mdebug_pending *p;
493 /* Linear search is ok, list is typically no more than 10 deep. */
494 for (p = pending_list[f_idx]; p; p = p->next)
500 /* Add a new symbol SH of type T. */
503 add_pending (FDR *fh, char *sh, struct type *t)
505 int f_idx = fh - debug_info->fdr;
506 struct mdebug_pending *p = is_pending_symbol (fh, sh);
508 /* Make sure we do not make duplicates. */
511 p = ((struct mdebug_pending *)
512 obstack_alloc (&mdebugread_objfile->objfile_obstack,
513 sizeof (struct mdebug_pending)));
516 p->next = pending_list[f_idx];
517 pending_list[f_idx] = p;
522 /* Parsing Routines proper. */
525 reg_value_complaint (int regnum, int num_regs, const char *sym)
527 complaint (&symfile_complaints,
528 _("bad register number %d (max %d) in symbol %s"),
529 regnum, num_regs - 1, sym);
532 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
533 For blocks, procedures and types we open a new lexical context.
534 This is basically just a big switch on the symbol's type. Argument
535 AX is the base pointer of aux symbols for this file (fh->iauxBase).
536 EXT_SH points to the unswapped symbol, which is needed for struct,
537 union, etc., types; it is NULL for an EXTR. BIGEND says whether
538 aux symbols are big-endian or little-endian. Return count of
539 SYMR's handled (normally one). */
542 mdebug_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch)
544 int regno = gdbarch_ecoff_reg_to_regnum (gdbarch, SYMBOL_VALUE (sym));
547 || regno >= (gdbarch_num_regs (gdbarch)
548 + gdbarch_num_pseudo_regs (gdbarch)))
550 reg_value_complaint (regno,
551 gdbarch_num_regs (gdbarch)
552 + gdbarch_num_pseudo_regs (gdbarch),
553 SYMBOL_PRINT_NAME (sym));
555 regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */
561 static const struct symbol_register_ops mdebug_register_funcs = {
565 /* The "aclass" indices for computed symbols. */
567 static int mdebug_register_index;
568 static int mdebug_regparm_index;
570 /* Common code for symbols describing data. */
573 add_data_symbol (SYMR *sh, union aux_ext *ax, int bigend,
574 struct symbol *s, int aclass_index, struct block *b,
575 struct objfile *objfile, const char *name)
577 SYMBOL_DOMAIN (s) = VAR_DOMAIN;
578 SYMBOL_ACLASS_INDEX (s) = aclass_index;
579 add_symbol (s, top_stack->cur_st, b);
581 /* Type could be missing if file is compiled without debugging info. */
582 if (SC_IS_UNDEF (sh->sc)
583 || sh->sc == scNil || sh->index == indexNil)
584 SYMBOL_TYPE (s) = objfile_type (objfile)->nodebug_data_symbol;
586 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
587 /* Value of a data symbol is its memory address. */
591 parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend,
592 struct section_offsets *section_offsets, struct objfile *objfile)
594 struct gdbarch *gdbarch = get_objfile_arch (objfile);
595 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
596 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
600 struct mdebug_pending *pend;
605 long svalue = sh->value;
608 if (ext_sh == (char *) NULL)
609 name = debug_info->ssext + sh->iss;
611 name = debug_info->ss + cur_fdr->issBase + sh->iss;
617 /* Do not relocate relative values.
618 The value of a stEnd symbol is the displacement from the
619 corresponding start symbol value.
620 The value of a stBlock symbol is the displacement from the
621 procedure address. */
622 if (sh->st != stEnd && sh->st != stBlock)
623 sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
630 sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile));
634 sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile));
643 case stGlobal: /* External symbol, goes into global block. */
644 b = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack->cur_st),
646 s = new_symbol (name);
647 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
648 add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name);
651 case stStatic: /* Static data, goes into current block. */
652 b = top_stack->cur_block;
653 s = new_symbol (name);
654 if (SC_IS_COMMON (sh->sc))
656 /* It is a FORTRAN common block. At least for SGI Fortran the
657 address is not in the symbol; we need to fix it later in
658 scan_file_globals. */
659 int bucket = hashname (SYMBOL_LINKAGE_NAME (s));
660 SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
661 global_sym_chain[bucket] = s;
664 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
665 add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name);
668 case stLocal: /* Local variable, goes into current block. */
669 b = top_stack->cur_block;
670 s = new_symbol (name);
671 SYMBOL_VALUE (s) = svalue;
672 if (sh->sc == scRegister)
673 add_data_symbol (sh, ax, bigend, s, mdebug_register_index,
676 add_data_symbol (sh, ax, bigend, s, LOC_LOCAL,
680 case stParam: /* Arg to procedure, goes into current
683 found_ecoff_debugging_info = 1;
684 top_stack->numargs++;
686 /* Special GNU C++ name. */
687 if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0)
688 name = "this"; /* FIXME, not alloc'd in obstack. */
689 s = new_symbol (name);
691 SYMBOL_DOMAIN (s) = VAR_DOMAIN;
692 SYMBOL_IS_ARGUMENT (s) = 1;
696 /* Pass by value in register. */
697 SYMBOL_ACLASS_INDEX (s) = mdebug_register_index;
700 /* Pass by reference on stack. */
701 SYMBOL_ACLASS_INDEX (s) = LOC_REF_ARG;
704 /* Pass by reference in register. */
705 SYMBOL_ACLASS_INDEX (s) = mdebug_regparm_index;
708 /* Pass by value on stack. */
709 SYMBOL_ACLASS_INDEX (s) = LOC_ARG;
712 SYMBOL_VALUE (s) = svalue;
713 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
714 add_symbol (s, top_stack->cur_st, top_stack->cur_block);
717 case stLabel: /* label, goes into current block. */
718 s = new_symbol (name);
719 SYMBOL_DOMAIN (s) = VAR_DOMAIN; /* So that it can be used */
720 SYMBOL_ACLASS_INDEX (s) = LOC_LABEL; /* but not misused. */
721 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
722 SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_int;
723 add_symbol (s, top_stack->cur_st, top_stack->cur_block);
726 case stProc: /* Procedure, usually goes into global block. */
727 case stStaticProc: /* Static procedure, goes into current block. */
728 /* For stProc symbol records, we need to check the storage class
729 as well, as only (stProc, scText) entries represent "real"
730 procedures - See the Compaq document titled "Object File /
731 Symbol Table Format Specification" for more information.
732 If the storage class is not scText, we discard the whole block
733 of symbol records for this stProc. */
734 if (sh->st == stProc && sh->sc != scText)
736 char *ext_tsym = ext_sh;
737 int keep_counting = 1;
740 while (keep_counting)
742 ext_tsym += external_sym_size;
743 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
753 complaint (&symfile_complaints,
754 _("unknown symbol type 0x%x"), sh->st);
760 s = new_symbol (name);
761 SYMBOL_DOMAIN (s) = VAR_DOMAIN;
762 SYMBOL_ACLASS_INDEX (s) = LOC_BLOCK;
763 /* Type of the return value. */
764 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
765 t = objfile_type (objfile)->builtin_int;
768 t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
769 if (strcmp (name, "malloc") == 0
770 && TYPE_CODE (t) == TYPE_CODE_VOID)
772 /* I don't know why, but, at least under Alpha GNU/Linux,
773 when linking against a malloc without debugging
774 symbols, its read as a function returning void---this
775 is bad because it means we cannot call functions with
776 string arguments interactively; i.e., "call
777 printf("howdy\n")" would fail with the error message
778 "program has no memory available". To avoid this, we
779 patch up the type and make it void*
780 instead. (davidm@azstarnet.com). */
781 t = make_pointer_type (t, NULL);
784 b = top_stack->cur_block;
785 if (sh->st == stProc)
787 const struct blockvector *bv
788 = SYMTAB_BLOCKVECTOR (top_stack->cur_st);
790 /* The next test should normally be true, but provides a
791 hook for nested functions (which we don't want to make
793 if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
794 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
795 /* Irix 5 sometimes has duplicate names for the same
796 function. We want to add such names up at the global
797 level, not as a nested function. */
798 else if (sh->value == top_stack->procadr)
799 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
801 add_symbol (s, top_stack->cur_st, b);
803 /* Make a type for the procedure itself. */
804 SYMBOL_TYPE (s) = lookup_function_type (t);
806 /* All functions in C++ have prototypes. For C we don't have enough
807 information in the debug info. */
808 if (SYMBOL_LANGUAGE (s) == language_cplus)
809 TYPE_PROTOTYPED (SYMBOL_TYPE (s)) = 1;
811 /* Create and enter a new lexical context. */
812 b = new_block (FUNCTION_BLOCK);
813 SYMBOL_BLOCK_VALUE (s) = b;
814 BLOCK_FUNCTION (b) = s;
815 BLOCK_START (b) = BLOCK_END (b) = sh->value;
816 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
817 add_block (b, top_stack->cur_st);
819 /* Not if we only have partial info. */
820 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
824 top_stack->cur_block = b;
825 top_stack->blocktype = sh->st;
826 top_stack->cur_type = SYMBOL_TYPE (s);
827 top_stack->cur_field = -1;
828 top_stack->procadr = sh->value;
829 top_stack->numargs = 0;
832 /* Beginning of code for structure, union, and enum definitions.
833 They all share a common set of local variables, defined here. */
835 enum type_code type_code;
841 case stStruct: /* Start a block defining a struct type. */
842 type_code = TYPE_CODE_STRUCT;
843 goto structured_common;
845 case stUnion: /* Start a block defining a union type. */
846 type_code = TYPE_CODE_UNION;
847 goto structured_common;
849 case stEnum: /* Start a block defining an enum type. */
850 type_code = TYPE_CODE_ENUM;
851 goto structured_common;
853 case stBlock: /* Either a lexical block, or some type. */
854 if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc))
855 goto case_stBlock_code; /* Lexical block */
857 type_code = TYPE_CODE_UNDEF; /* We have a type. */
859 /* Common code for handling struct, union, enum, and/or as-yet-
860 unknown-type blocks of info about structured data. `type_code'
861 has been set to the proper TYPE_CODE, if we know it. */
863 found_ecoff_debugging_info = 1;
865 top_stack->blocktype = stBlock;
867 /* First count the number of fields and the highest value. */
870 for (ext_tsym = ext_sh + external_sym_size;
872 ext_tsym += external_sym_size)
876 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
881 /* C++ encodes class types as structures where there the
882 methods are encoded as stProc. The scope of stProc
883 symbols also ends with stEnd, thus creating a risk of
884 taking the wrong stEnd symbol record as the end of
885 the current struct, which would cause GDB to undercount
886 the real number of fields in this struct. To make sure
887 we really reached the right stEnd symbol record, we
888 check the associated name, and match it against the
889 struct name. Since method names are mangled while
890 the class name is not, there is no risk of having a
891 method whose name is identical to the class name
892 (in particular constructor method names are different
893 from the class name). There is therefore no risk that
894 this check stops the count on the StEnd of a method.
896 Also, assume that we're really at the end when tsym.iss
898 if (tsym.iss == issNull
899 || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss,
905 if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
907 /* If the type of the member is Nil (or Void),
908 without qualifiers, assume the tag is an
910 Alpha cc -migrate enums are recognized by a zero
911 index and a zero symbol value.
912 DU 4.0 cc enums are recognized by a member type of
913 btEnum without qualifiers and a zero symbol value. */
914 if (tsym.index == indexNil
915 || (tsym.index == 0 && sh->value == 0))
916 type_code = TYPE_CODE_ENUM;
919 (*debug_swap->swap_tir_in) (bigend,
920 &ax[tsym.index].a_ti,
922 if ((tir.bt == btNil || tir.bt == btVoid
923 || (tir.bt == btEnum && sh->value == 0))
925 type_code = TYPE_CODE_ENUM;
929 if (tsym.value > max_value)
930 max_value = tsym.value;
939 /* This is a no-op; is it trying to tell us something
940 we should be checking? */
941 if (tsym.sc == scVariant); /*UNIMPLEMENTED */
945 /* This is something like a struct within a
946 struct. Skip over the fields of the inner
947 struct. The -1 is because the for loop will
948 increment ext_tsym. */
949 ext_tsym = ((char *) debug_info->external_sym
950 + ((cur_fdr->isymBase + tsym.index - 1)
951 * external_sym_size));
957 /* mips cc puts out a typedef for struct x if it is not yet
958 defined when it encounters
959 struct y { struct x *xp; };
964 /* Irix5 cc puts out a stIndirect for struct x if it is not
965 yet defined when it encounters
966 struct y { struct x *xp; };
971 complaint (&symfile_complaints,
972 _("declaration block contains "
973 "unhandled symbol type %d"),
979 /* In an stBlock, there is no way to distinguish structs,
980 unions, and enums at this point. This is a bug in the
981 original design (that has been fixed with the recent
982 addition of the stStruct, stUnion, and stEnum symbol
983 types.) The way you can tell is if/when you see a variable
984 or field of that type. In that case the variable's type
985 (in the AUX table) says if the type is struct, union, or
986 enum, and points back to the stBlock here. So you can
987 patch the tag kind up later - but only if there actually is
988 a variable or field of that type.
990 So until we know for sure, we will guess at this point.
992 If the first member has index==indexNil or a void type,
993 assume we have an enumeration.
994 Otherwise, if there is more than one member, and all
995 the members have offset 0, assume we have a union.
996 Otherwise, assume we have a struct.
998 The heuristic could guess wrong in the case of of an
999 enumeration with no members or a union with one (or zero)
1000 members, or when all except the last field of a struct have
1001 width zero. These are uncommon and/or illegal situations,
1002 and in any case guessing wrong probably doesn't matter
1005 But if we later do find out we were wrong, we fixup the tag
1006 kind. Members of an enumeration must be handled
1007 differently from struct/union fields, and that is harder to
1008 patch up, but luckily we shouldn't need to. (If there are
1009 any enumeration members, we can tell for sure it's an enum
1012 if (type_code == TYPE_CODE_UNDEF)
1014 if (nfields > 1 && max_value == 0)
1015 type_code = TYPE_CODE_UNION;
1017 type_code = TYPE_CODE_STRUCT;
1020 /* Create a new type or use the pending type. */
1021 pend = is_pending_symbol (cur_fdr, ext_sh);
1022 if (pend == (struct mdebug_pending *) NULL)
1024 t = new_type (NULL);
1025 add_pending (cur_fdr, ext_sh, t);
1030 /* Do not set the tag name if it is a compiler generated tag name
1031 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1032 Alpha cc puts out an sh->iss of zero for those. */
1033 if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
1034 TYPE_TAG_NAME (t) = NULL;
1036 TYPE_TAG_NAME (t) = obconcat (&mdebugread_objfile->objfile_obstack,
1037 name, (char *) NULL);
1039 TYPE_CODE (t) = type_code;
1040 TYPE_LENGTH (t) = sh->value;
1041 TYPE_NFIELDS (t) = nfields;
1042 TYPE_FIELDS (t) = f = ((struct field *)
1044 nfields * sizeof (struct field)));
1046 if (type_code == TYPE_CODE_ENUM)
1048 int unsigned_enum = 1;
1050 /* This is a non-empty enum. */
1052 /* DEC c89 has the number of enumerators in the sh.value field,
1053 not the type length, so we have to compensate for that
1054 incompatibility quirk.
1055 This might do the wrong thing for an enum with one or two
1056 enumerators and gcc -gcoff -fshort-enums, but these cases
1057 are hopefully rare enough.
1058 Alpha cc -migrate has a sh.value field of zero, we adjust
1060 if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)
1061 || TYPE_LENGTH (t) == 0)
1062 TYPE_LENGTH (t) = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
1063 for (ext_tsym = ext_sh + external_sym_size;
1065 ext_tsym += external_sym_size)
1068 struct symbol *enum_sym;
1070 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
1072 if (tsym.st != stMember)
1075 SET_FIELD_ENUMVAL (*f, tsym.value);
1076 FIELD_TYPE (*f) = t;
1077 FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss;
1078 FIELD_BITSIZE (*f) = 0;
1080 enum_sym = allocate_symbol (mdebugread_objfile);
1081 SYMBOL_SET_LINKAGE_NAME
1083 (char *) obstack_copy0 (&mdebugread_objfile->objfile_obstack,
1084 f->name, strlen (f->name)));
1085 SYMBOL_ACLASS_INDEX (enum_sym) = LOC_CONST;
1086 SYMBOL_TYPE (enum_sym) = t;
1087 SYMBOL_DOMAIN (enum_sym) = VAR_DOMAIN;
1088 SYMBOL_VALUE (enum_sym) = tsym.value;
1089 if (SYMBOL_VALUE (enum_sym) < 0)
1091 add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block);
1093 /* Skip the stMembers that we've handled. */
1098 TYPE_UNSIGNED (t) = 1;
1100 /* Make this the current type. */
1101 top_stack->cur_type = t;
1102 top_stack->cur_field = 0;
1104 /* Do not create a symbol for alpha cc unnamed structs. */
1108 /* gcc puts out an empty struct for an opaque struct definitions,
1109 do not create a symbol for it either. */
1110 if (TYPE_NFIELDS (t) == 0)
1116 s = new_symbol (name);
1117 SYMBOL_DOMAIN (s) = STRUCT_DOMAIN;
1118 SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF;
1119 SYMBOL_VALUE (s) = 0;
1120 SYMBOL_TYPE (s) = t;
1121 add_symbol (s, top_stack->cur_st, top_stack->cur_block);
1124 /* End of local variables shared by struct, union, enum, and
1125 block (as yet unknown struct/union/enum) processing. */
1129 found_ecoff_debugging_info = 1;
1130 /* Beginnning of (code) block. Value of symbol
1131 is the displacement from procedure start. */
1132 push_parse_stack ();
1134 /* Do not start a new block if this is the outermost block of a
1135 procedure. This allows the LOC_BLOCK symbol to point to the
1136 block with the local variables, so funcname::var works. */
1137 if (top_stack->blocktype == stProc
1138 || top_stack->blocktype == stStaticProc)
1140 top_stack->blocktype = stNil;
1144 top_stack->blocktype = stBlock;
1145 b = new_block (NON_FUNCTION_BLOCK);
1146 BLOCK_START (b) = sh->value + top_stack->procadr;
1147 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1148 top_stack->cur_block = b;
1149 add_block (b, top_stack->cur_st);
1152 case stEnd: /* end (of anything) */
1153 if (sh->sc == scInfo || SC_IS_COMMON (sh->sc))
1155 /* Finished with type */
1156 top_stack->cur_type = 0;
1158 else if (sh->sc == scText &&
1159 (top_stack->blocktype == stProc ||
1160 top_stack->blocktype == stStaticProc))
1162 /* Finished with procedure */
1163 const struct blockvector *bv
1164 = SYMTAB_BLOCKVECTOR (top_stack->cur_st);
1165 struct mdebug_extra_func_info *e;
1166 struct block *b = top_stack->cur_block;
1167 struct type *ftype = top_stack->cur_type;
1170 BLOCK_END (top_stack->cur_block) += sh->value; /* size */
1172 /* Make up special symbol to contain procedure specific info. */
1173 s = new_symbol (MDEBUG_EFI_SYMBOL_NAME);
1174 SYMBOL_DOMAIN (s) = LABEL_DOMAIN;
1175 SYMBOL_ACLASS_INDEX (s) = LOC_CONST;
1176 SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->builtin_void;
1177 e = ((struct mdebug_extra_func_info *)
1178 obstack_alloc (&mdebugread_objfile->objfile_obstack,
1179 sizeof (struct mdebug_extra_func_info)));
1180 memset (e, 0, sizeof (struct mdebug_extra_func_info));
1181 SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e;
1182 e->numargs = top_stack->numargs;
1183 e->pdr.framereg = -1;
1184 add_symbol (s, top_stack->cur_st, top_stack->cur_block);
1186 /* f77 emits proc-level with address bounds==[0,0],
1187 So look for such child blocks, and patch them. */
1188 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
1190 struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
1192 if (BLOCK_SUPERBLOCK (b_bad) == b
1193 && BLOCK_START (b_bad) == top_stack->procadr
1194 && BLOCK_END (b_bad) == top_stack->procadr)
1196 BLOCK_START (b_bad) = BLOCK_START (b);
1197 BLOCK_END (b_bad) = BLOCK_END (b);
1201 if (TYPE_NFIELDS (ftype) <= 0)
1203 /* No parameter type information is recorded with the function's
1204 type. Set that from the type of the parameter symbols. */
1205 int nparams = top_stack->numargs;
1211 struct block_iterator iter;
1213 TYPE_NFIELDS (ftype) = nparams;
1214 TYPE_FIELDS (ftype) = (struct field *)
1215 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
1218 ALL_BLOCK_SYMBOLS (b, iter, sym)
1220 if (iparams == nparams)
1223 if (SYMBOL_IS_ARGUMENT (sym))
1225 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
1226 TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
1233 else if (sh->sc == scText && top_stack->blocktype == stBlock)
1235 /* End of (code) block. The value of the symbol is the
1236 displacement from the procedure`s start address of the
1237 end of this block. */
1238 BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
1240 else if (sh->sc == scText && top_stack->blocktype == stNil)
1242 /* End of outermost block. Pop parse stack and ignore. The
1243 following stEnd of stProc will take care of the block. */
1246 else if (sh->sc == scText && top_stack->blocktype == stFile)
1248 /* End of file. Pop parse stack and ignore. Higher
1249 level code deals with this. */
1253 complaint (&symfile_complaints,
1254 _("stEnd with storage class %d not handled"), sh->sc);
1256 pop_parse_stack (); /* Restore previous lexical context. */
1259 case stMember: /* member of struct or union */
1260 f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
1261 FIELD_NAME (*f) = name;
1262 SET_FIELD_BITPOS (*f, sh->value);
1264 FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index,
1265 &bitsize, bigend, name);
1266 FIELD_BITSIZE (*f) = bitsize;
1269 case stIndirect: /* forward declaration on Irix5 */
1270 /* Forward declarations from Irix5 cc are handled by cross_ref,
1274 case stTypedef: /* type definition */
1275 found_ecoff_debugging_info = 1;
1277 /* Typedefs for forward declarations and opaque structs from alpha cc
1278 are handled by cross_ref, skip them. */
1282 /* Parse the type or use the pending type. */
1283 pend = is_pending_symbol (cur_fdr, ext_sh);
1284 if (pend == (struct mdebug_pending *) NULL)
1286 t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name);
1287 add_pending (cur_fdr, ext_sh, t);
1292 /* Mips cc puts out a typedef with the name of the struct for forward
1293 declarations. These should not go into the symbol table and
1294 TYPE_NAME should not be set for them.
1295 They can't be distinguished from an intentional typedef to
1296 the same name however:
1298 struct x { int ix; int jx; };
1302 struct xx {int ixx; int jxx; };
1303 generates a cross referencing stTypedef for x and xx.
1304 The user visible effect of this is that the type of a pointer
1305 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1306 The problem is fixed with alpha cc and Irix5 cc. */
1308 /* However if the typedef cross references to an opaque aggregate, it
1309 is safe to omit it from the symbol table. */
1311 if (has_opaque_xref (cur_fdr, sh))
1313 s = new_symbol (name);
1314 SYMBOL_DOMAIN (s) = VAR_DOMAIN;
1315 SYMBOL_ACLASS_INDEX (s) = LOC_TYPEDEF;
1316 SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
1317 SYMBOL_TYPE (s) = t;
1318 add_symbol (s, top_stack->cur_st, top_stack->cur_block);
1320 /* Incomplete definitions of structs should not get a name. */
1321 if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
1322 && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
1323 || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
1324 && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
1326 if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
1327 || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
1329 /* If we are giving a name to a type such as "pointer to
1330 foo" or "function returning foo", we better not set
1331 the TYPE_NAME. If the program contains "typedef char
1332 *caddr_t;", we don't want all variables of type char
1333 * to print as caddr_t. This is not just a
1334 consequence of GDB's type management; CC and GCC (at
1335 least through version 2.4) both output variables of
1336 either type char * or caddr_t with the type
1337 refering to the stTypedef symbol for caddr_t. If a future
1338 compiler cleans this up it GDB is not ready for it
1339 yet, but if it becomes ready we somehow need to
1340 disable this check (without breaking the PCC/GCC2.4
1345 Fortunately, this check seems not to be necessary
1346 for anything except pointers or functions. */
1349 TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_LINKAGE_NAME (s);
1353 case stFile: /* file name */
1354 push_parse_stack ();
1355 top_stack->blocktype = sh->st;
1358 /* I`ve never seen these for C */
1360 break; /* register relocation */
1362 break; /* forwarding address */
1364 break; /* constant */
1366 complaint (&symfile_complaints, _("unknown symbol type 0x%x"), sh->st);
1375 static const struct objfile_data *basic_type_data;
1377 static struct type *
1378 basic_type (int bt, struct objfile *objfile)
1380 struct gdbarch *gdbarch = get_objfile_arch (objfile);
1381 struct type **map_bt
1382 = (struct type **) objfile_data (objfile, basic_type_data);
1390 map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack,
1391 btMax, struct type *);
1392 set_objfile_data (objfile, basic_type_data, map_bt);
1401 tp = objfile_type (objfile)->builtin_void;
1405 tp = init_pointer_type (objfile, 32, "adr_32",
1406 objfile_type (objfile)->builtin_void);
1410 tp = init_integer_type (objfile, 8, 0, "char");
1411 TYPE_NOSIGN (tp) = 1;
1415 tp = init_integer_type (objfile, 8, 1, "unsigned char");
1419 tp = init_integer_type (objfile, 16, 0, "short");
1423 tp = init_integer_type (objfile, 16, 1, "unsigned short");
1427 tp = init_integer_type (objfile, 32, 0, "int");
1431 tp = init_integer_type (objfile, 32, 1, "unsigned int");
1435 tp = init_integer_type (objfile, 32, 0, "long");
1439 tp = init_integer_type (objfile, 32, 1, "unsigned long");
1443 tp = init_float_type (objfile, gdbarch_float_bit (gdbarch),
1444 "float", gdbarch_float_format (gdbarch));
1448 tp = init_float_type (objfile, gdbarch_double_bit (gdbarch),
1449 "double", gdbarch_double_format (gdbarch));
1453 tp = init_complex_type (objfile, "complex",
1454 basic_type (btFloat, objfile));
1458 tp = init_complex_type (objfile, "double complex",
1459 basic_type (btFloat, objfile));
1463 /* We use TYPE_CODE_INT to print these as integers. Does this do any
1464 good? Would we be better off with TYPE_CODE_ERROR? Should
1465 TYPE_CODE_ERROR print things in hex if it knows the size? */
1466 tp = init_integer_type (objfile, gdbarch_int_bit (gdbarch), 0,
1471 tp = init_type (objfile, TYPE_CODE_ERROR,
1472 gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT,
1473 "floating decimal");
1477 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
1479 tp = init_type (objfile, TYPE_CODE_STRING, 1, "string");
1483 tp = objfile_type (objfile)->builtin_void;
1487 tp = init_integer_type (objfile, 64, 0, "long");
1491 tp = init_integer_type (objfile, 64, 1, "unsigned long");
1495 tp = init_integer_type (objfile, 64, 0, "long long");
1499 tp = init_integer_type (objfile, 64, 1, "unsigned long long");
1503 tp = init_pointer_type (objfile, 64, "adr_64",
1504 objfile_type (objfile)->builtin_void);
1508 tp = init_integer_type (objfile, 64, 0, "int");
1512 tp = init_integer_type (objfile, 64, 1, "unsigned int");
1524 /* Parse the type information provided in the raw AX entries for
1525 the symbol SH. Return the bitfield size in BS, in case.
1526 We must byte-swap the AX entries before we use them; BIGEND says whether
1527 they are big-endian or little-endian (from fh->fBigendian). */
1529 static struct type *
1530 parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs,
1531 int bigend, const char *sym_name)
1534 struct type *tp = 0;
1535 enum type_code type_code = TYPE_CODE_UNDEF;
1537 /* Handle undefined types, they have indexNil. */
1538 if (aux_index == indexNil)
1539 return basic_type (btInt, mdebugread_objfile);
1541 /* Handle corrupt aux indices. */
1542 if (aux_index >= (debug_info->fdr + fd)->caux)
1544 index_complaint (sym_name);
1545 return basic_type (btInt, mdebugread_objfile);
1549 /* Use aux as a type information record, map its basic type. */
1550 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1551 tp = basic_type (t->bt, mdebugread_objfile);
1554 /* Cannot use builtin types -- build our own. */
1558 type_code = TYPE_CODE_STRUCT;
1561 type_code = TYPE_CODE_UNION;
1564 type_code = TYPE_CODE_ENUM;
1567 type_code = TYPE_CODE_RANGE;
1570 type_code = TYPE_CODE_SET;
1573 /* alpha cc -migrate uses this for typedefs. The true type will
1574 be obtained by crossreferencing below. */
1575 type_code = TYPE_CODE_ERROR;
1578 /* alpha cc uses this for typedefs. The true type will be
1579 obtained by crossreferencing below. */
1580 type_code = TYPE_CODE_ERROR;
1583 basic_type_complaint (t->bt, sym_name);
1584 return basic_type (btInt, mdebugread_objfile);
1588 /* Move on to next aux. */
1593 int width = AUX_GET_WIDTH (bigend, ax);
1595 /* Inhibit core dumps if TIR is corrupted. */
1596 if (bs == (int *) NULL)
1598 /* Alpha cc -migrate encodes char and unsigned char types
1599 as short and unsigned short types with a field width of 8.
1600 Enum types also have a field width which we ignore for now. */
1601 if (t->bt == btShort && width == 8)
1602 tp = basic_type (btChar, mdebugread_objfile);
1603 else if (t->bt == btUShort && width == 8)
1604 tp = basic_type (btUChar, mdebugread_objfile);
1605 else if (t->bt == btEnum)
1608 complaint (&symfile_complaints,
1609 _("can't handle TIR fBitfield for %s"),
1617 /* A btIndirect entry cross references to an aux entry containing
1619 if (t->bt == btIndirect)
1626 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
1628 if (rn->rfd == 0xfff)
1630 rf = AUX_GET_ISYM (bigend, ax);
1638 complaint (&symfile_complaints,
1639 _("unable to cross ref btIndirect for %s"), sym_name);
1640 return basic_type (btInt, mdebugread_objfile);
1642 xref_fh = get_rfd (fd, rf);
1643 xref_fd = xref_fh - debug_info->fdr;
1644 tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
1645 rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
1648 /* All these types really point to some (common) MIPS type
1649 definition, and only the type-qualifiers fully identify
1650 them. We'll make the same effort at sharing. */
1651 if (t->bt == btStruct ||
1655 /* btSet (I think) implies that the name is a tag name, not a typedef
1656 name. This apparently is a MIPS extension for C sets. */
1661 /* Try to cross reference this type, build new type on failure. */
1662 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1663 if (tp == (struct type *) NULL)
1664 tp = init_type (mdebugread_objfile, type_code, 0, NULL);
1666 /* DEC c89 produces cross references to qualified aggregate types,
1667 dereference them. */
1668 while (TYPE_CODE (tp) == TYPE_CODE_PTR
1669 || TYPE_CODE (tp) == TYPE_CODE_ARRAY)
1670 tp = TYPE_TARGET_TYPE (tp);
1672 /* Make sure that TYPE_CODE(tp) has an expected type code.
1673 Any type may be returned from cross_ref if file indirect entries
1675 if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
1676 && TYPE_CODE (tp) != TYPE_CODE_UNION
1677 && TYPE_CODE (tp) != TYPE_CODE_ENUM)
1679 unexpected_type_code_complaint (sym_name);
1683 /* Usually, TYPE_CODE(tp) is already type_code. The main
1684 exception is if we guessed wrong re struct/union/enum.
1685 But for struct vs. union a wrong guess is harmless, so
1686 don't complain(). */
1687 if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
1688 && type_code != TYPE_CODE_ENUM)
1689 || (TYPE_CODE (tp) != TYPE_CODE_ENUM
1690 && type_code == TYPE_CODE_ENUM))
1692 bad_tag_guess_complaint (sym_name);
1695 if (TYPE_CODE (tp) != type_code)
1697 TYPE_CODE (tp) = type_code;
1700 /* Do not set the tag name if it is a compiler generated tag name
1701 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1702 if (name[0] == '.' || name[0] == '\0')
1703 TYPE_TAG_NAME (tp) = NULL;
1704 else if (TYPE_TAG_NAME (tp) == NULL
1705 || strcmp (TYPE_TAG_NAME (tp), name) != 0)
1708 obstack_copy0 (&mdebugread_objfile->objfile_obstack,
1709 name, strlen (name)));
1713 /* All these types really point to some (common) MIPS type
1714 definition, and only the type-qualifiers fully identify
1715 them. We'll make the same effort at sharing.
1716 FIXME: We are not doing any guessing on range types. */
1717 if (t->bt == btRange)
1721 /* Try to cross reference this type, build new type on failure. */
1722 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1723 if (tp == (struct type *) NULL)
1724 tp = init_type (mdebugread_objfile, type_code, 0, NULL);
1726 /* Make sure that TYPE_CODE(tp) has an expected type code.
1727 Any type may be returned from cross_ref if file indirect entries
1729 if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
1731 unexpected_type_code_complaint (sym_name);
1735 /* Usually, TYPE_CODE(tp) is already type_code. The main
1736 exception is if we guessed wrong re struct/union/enum. */
1737 if (TYPE_CODE (tp) != type_code)
1739 bad_tag_guess_complaint (sym_name);
1740 TYPE_CODE (tp) = type_code;
1742 if (TYPE_NAME (tp) == NULL
1743 || strcmp (TYPE_NAME (tp), name) != 0)
1746 obstack_copy0 (&mdebugread_objfile->objfile_obstack,
1747 name, strlen (name)));
1750 if (t->bt == btTypedef)
1754 /* Try to cross reference this type, it should succeed. */
1755 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1756 if (tp == (struct type *) NULL)
1758 complaint (&symfile_complaints,
1759 _("unable to cross ref btTypedef for %s"), sym_name);
1760 tp = basic_type (btInt, mdebugread_objfile);
1764 /* Deal with range types. */
1765 if (t->bt == btRange)
1767 TYPE_NFIELDS (tp) = 0;
1768 TYPE_RANGE_DATA (tp) = ((struct range_bounds *)
1769 TYPE_ZALLOC (tp, sizeof (struct range_bounds)));
1770 TYPE_LOW_BOUND (tp) = AUX_GET_DNLOW (bigend, ax);
1772 TYPE_HIGH_BOUND (tp) = AUX_GET_DNHIGH (bigend, ax);
1776 /* Parse all the type qualifiers now. If there are more
1777 than 6 the game will continue in the next aux. */
1781 #define PARSE_TQ(tq) \
1782 if (t->tq != tqNil) \
1783 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1795 /* mips cc 2.x and gcc never put out continued aux entries. */
1799 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1803 /* Complain for illegal continuations due to corrupt aux entries. */
1805 complaint (&symfile_complaints,
1806 _("illegal TIR continued for %s"), sym_name);
1811 /* Make up a complex type from a basic one. Type is passed by
1812 reference in TPP and side-effected as necessary. The type
1813 qualifier TQ says how to handle the aux symbols at AX for
1814 the symbol SX we are currently analyzing. BIGEND says whether
1815 aux symbols are big-endian or little-endian.
1816 Returns the number of aux symbols we parsed. */
1819 upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend,
1820 const char *sym_name)
1825 /* Used in array processing. */
1836 t = lookup_pointer_type (*tpp);
1841 t = lookup_function_type (*tpp);
1848 /* Determine and record the domain type (type of index). */
1849 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
1855 rf = AUX_GET_ISYM (bigend, ax);
1858 fh = get_rfd (fd, rf);
1860 indx = parse_type (fh - debug_info->fdr,
1861 debug_info->external_aux + fh->iauxBase,
1862 id, (int *) NULL, bigend, sym_name);
1864 /* The bounds type should be an integer type, but might be anything
1865 else due to corrupt aux entries. */
1866 if (TYPE_CODE (indx) != TYPE_CODE_INT)
1868 complaint (&symfile_complaints,
1869 _("illegal array index type for %s, assuming int"),
1871 indx = objfile_type (mdebugread_objfile)->builtin_int;
1874 /* Get the bounds, and create the array type. */
1876 lower = AUX_GET_DNLOW (bigend, ax);
1878 upper = AUX_GET_DNHIGH (bigend, ax);
1880 rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
1882 range = create_static_range_type ((struct type *) NULL, indx,
1885 t = create_array_type ((struct type *) NULL, *tpp, range);
1887 /* We used to fill in the supplied array element bitsize
1888 here if the TYPE_LENGTH of the target type was zero.
1889 This happens for a `pointer to an array of anonymous structs',
1890 but in this case the array element bitsize is also zero,
1891 so nothing is gained.
1892 And we used to check the TYPE_LENGTH of the target type against
1893 the supplied array element bitsize.
1894 gcc causes a mismatch for `pointer to array of object',
1895 since the sdb directives it uses do not have a way of
1896 specifying the bitsize, but it does no harm (the
1897 TYPE_LENGTH should be correct) and we should be able to
1898 ignore the erroneous bitsize from the auxiliary entry safely.
1899 dbx seems to ignore it too. */
1901 /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
1902 if (TYPE_LENGTH (*tpp) == 0)
1903 TYPE_TARGET_STUB (t) = 1;
1909 /* Volatile -- currently ignored */
1913 /* Const -- currently ignored */
1917 complaint (&symfile_complaints, _("unknown type qualifier 0x%x"), tq);
1923 /* Parse a procedure descriptor record PR. Note that the procedure is
1924 parsed _after_ the local symbols, now we just insert the extra
1925 information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
1926 already been placed in the procedure's main block. Note also that
1927 images that have been partially stripped (ld -x) have been deprived
1928 of local symbols, and we have to cope with them here. FIRST_OFF is
1929 the offset of the first procedure for this FDR; we adjust the
1930 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1931 to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
1932 in question, or NULL to use top_stack->cur_block. */
1935 parse_procedure (PDR *pr, struct compunit_symtab *search_symtab,
1936 struct partial_symtab *pst)
1938 struct symbol *s, *i;
1939 const struct block *b;
1942 /* Simple rule to find files linked "-x". */
1943 if (cur_fdr->rss == -1)
1947 /* Static procedure at address pr->adr. Sigh. */
1948 /* FIXME-32x64. assuming pr->adr fits in long. */
1949 complaint (&symfile_complaints,
1950 _("can't handle PDR for static proc at 0x%lx"),
1951 (unsigned long) pr->adr);
1959 (*debug_swap->swap_ext_in) (cur_bfd,
1960 ((char *) debug_info->external_ext
1962 * debug_swap->external_ext_size)),
1964 sh_name = debug_info->ssext + she.asym.iss;
1972 (*debug_swap->swap_sym_in) (cur_bfd,
1973 ((char *) debug_info->external_sym
1974 + ((cur_fdr->isymBase + pr->isym)
1975 * debug_swap->external_sym_size)),
1977 sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
1980 if (search_symtab != NULL)
1983 /* This loses both in the case mentioned (want a static, find a global),
1984 but also if we are looking up a non-mangled name which happens to
1985 match the name of a mangled function. */
1986 /* We have to save the cur_fdr across the call to lookup_symbol.
1987 If the pdr is for a static function and if a global function with
1988 the same name exists, lookup_symbol will eventually read in the symtab
1989 for the global function and clobber cur_fdr. */
1990 FDR *save_cur_fdr = cur_fdr;
1992 s = lookup_symbol (sh_name, NULL, VAR_DOMAIN, 0);
1993 cur_fdr = save_cur_fdr;
1997 BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (search_symtab),
2004 s = mylookup_symbol (sh_name, top_stack->cur_block,
2005 VAR_DOMAIN, LOC_BLOCK);
2009 b = SYMBOL_BLOCK_VALUE (s);
2013 complaint (&symfile_complaints, _("PDR for %s, but no symbol"), sh_name);
2017 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2018 s = new_symbol (sh_name);
2019 SYMBOL_DOMAIN (s) = VAR_DOMAIN;
2020 SYMBOL_CLASS (s) = LOC_BLOCK;
2021 /* Donno its type, hope int is ok. */
2023 = lookup_function_type (objfile_type (pst->objfile)->builtin_int);
2024 add_symbol (s, top_stack->cur_st, top_stack->cur_block);
2025 /* Won't have symbols for this one. */
2027 SYMBOL_BLOCK_VALUE (s) = b;
2028 BLOCK_FUNCTION (b) = s;
2029 BLOCK_START (b) = pr->adr;
2030 /* BOUND used to be the end of procedure's text, but the
2031 argument is no longer passed in. */
2032 BLOCK_END (b) = bound;
2033 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
2034 add_block (b, top_stack->cur_st);
2038 i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST);
2042 struct mdebug_extra_func_info *e;
2044 e = (struct mdebug_extra_func_info *) SYMBOL_VALUE_BYTES (i);
2047 /* GDB expects the absolute function start address for the
2048 procedure descriptor in e->pdr.adr.
2049 As the address in the procedure descriptor is usually relative,
2050 we would have to relocate e->pdr.adr with cur_fdr->adr and
2051 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2052 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2053 in shared libraries on some systems, and on other systems
2054 e->pdr.adr is sometimes offset by a bogus value.
2055 To work around these problems, we replace e->pdr.adr with
2056 the start address of the function. */
2057 e->pdr.adr = BLOCK_START (b);
2060 /* It would be reasonable that functions that have been compiled
2061 without debugging info have a btNil type for their return value,
2062 and functions that are void and are compiled with debugging info
2064 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2065 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2067 The glevel field in cur_fdr could be used to determine the presence
2068 of debugging info, but GCC doesn't always pass the -g switch settings
2069 to the assembler and GAS doesn't set the glevel field from the -g switch
2071 To work around these problems, the return value type of a TYPE_CODE_VOID
2072 function is adjusted accordingly if no debugging info was found in the
2073 compilation unit. */
2075 if (processing_gcc_compilation == 0
2076 && found_ecoff_debugging_info == 0
2077 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)
2078 SYMBOL_TYPE (s) = objfile_type (mdebugread_objfile)->nodebug_text_symbol;
2081 /* Parse the external symbol ES. Just call parse_symbol() after
2082 making sure we know where the aux are for it.
2083 BIGEND says whether aux entries are big-endian or little-endian.
2085 This routine clobbers top_stack->cur_block and ->cur_st. */
2087 static void parse_external (EXTR *, int, struct section_offsets *,
2091 parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets,
2092 struct objfile *objfile)
2096 if (es->ifd != ifdNil)
2099 cur_fdr = debug_info->fdr + cur_fd;
2100 ax = debug_info->external_aux + cur_fdr->iauxBase;
2104 cur_fdr = debug_info->fdr;
2108 /* Reading .o files */
2109 if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil)
2112 switch (es->asym.st)
2115 /* These are generated for static symbols in .o files,
2136 /* FIXME: Turn this into a complaint? */
2138 printf_filtered (_("Warning: %s `%s' is undefined (in %s)\n"),
2139 what, debug_info->ssext + es->asym.iss,
2140 fdr_name (cur_fdr));
2144 switch (es->asym.st)
2148 /* There is no need to parse the external procedure symbols.
2149 If they are from objects compiled without -g, their index will
2150 be indexNil, and the symbol definition from the minimal symbol
2151 is preferrable (yielding a function returning int instead of int).
2152 If the index points to a local procedure symbol, the local
2153 symbol already provides the correct type.
2154 Note that the index of the external procedure symbol points
2155 to the local procedure symbol in the local symbol table, and
2156 _not_ to the auxiliary symbol info. */
2160 /* Global common symbols are resolved by the runtime loader,
2162 if (SC_IS_COMMON (es->asym.sc))
2165 /* Note that the case of a symbol with indexNil must be handled
2166 anyways by parse_symbol(). */
2167 parse_symbol (&es->asym, ax, (char *) NULL,
2168 bigend, section_offsets, objfile);
2175 /* Parse the line number info for file descriptor FH into
2176 GDB's linetable LT. MIPS' encoding requires a little bit
2177 of magic to get things out. Note also that MIPS' line
2178 numbers can go back and forth, apparently we can live
2179 with that and do not need to reorder our linetables. */
2181 static void parse_lines (FDR *, PDR *, struct linetable *, int,
2182 struct partial_symtab *, CORE_ADDR);
2185 parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines,
2186 struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr)
2188 unsigned char *base;
2190 int delta, count, lineno = 0;
2192 if (fh->cbLine == 0)
2195 /* Scan by procedure descriptors. */
2197 for (j = 0; j < fh->cpd; j++, pr++)
2201 unsigned char *halt;
2203 /* No code for this one. */
2204 if (pr->iline == ilineNil ||
2205 pr->lnLow == -1 || pr->lnHigh == -1)
2208 /* Determine start and end address of compressed line bytes for
2210 base = debug_info->line + fh->cbLineOffset;
2211 if (j != (fh->cpd - 1))
2212 halt = base + pr[1].cbLineOffset;
2214 halt = base + fh->cbLine;
2215 base += pr->cbLineOffset;
2217 adr = pst->textlow + pr->adr - lowest_pdr_addr;
2219 l = adr >> 2; /* in words */
2220 for (lineno = pr->lnLow; base < halt;)
2222 count = *base & 0x0f;
2223 delta = *base++ >> 4;
2228 delta = (base[0] << 8) | base[1];
2229 if (delta >= 0x8000)
2233 lineno += delta; /* first delta is 0 */
2235 /* Complain if the line table overflows. Could happen
2236 with corrupt binaries. */
2237 if (lt->nitems >= maxlines)
2239 complaint (&symfile_complaints,
2240 _("guessed size of linetable for %s incorrectly"),
2244 k = add_line (lt, lineno, l, k);
2251 function_outside_compilation_unit_complaint (const char *arg1)
2253 complaint (&symfile_complaints,
2254 _("function `%s' appears to be defined "
2255 "outside of all compilation units"),
2259 /* Use the STORAGE_CLASS to compute which section the given symbol
2260 belongs to, and then records this new minimal symbol. */
2263 record_minimal_symbol (minimal_symbol_reader &reader,
2264 const char *name, const CORE_ADDR address,
2265 enum minimal_symbol_type ms_type, int storage_class,
2266 struct objfile *objfile)
2270 switch (storage_class)
2273 section = SECT_OFF_TEXT (objfile);
2276 section = SECT_OFF_DATA (objfile);
2279 section = SECT_OFF_BSS (objfile);
2282 section = get_section_index (objfile, ".sdata");
2285 section = get_section_index (objfile, ".sbss");
2288 section = get_section_index (objfile, ".rdata");
2291 section = get_section_index (objfile, ".init");
2294 section = get_section_index (objfile, ".xdata");
2297 section = get_section_index (objfile, ".pdata");
2300 section = get_section_index (objfile, ".fini");
2303 section = get_section_index (objfile, ".rconst");
2307 section = get_section_index (objfile, ".tlsdata");
2312 section = get_section_index (objfile, ".tlsbss");
2316 /* This kind of symbol is not associated to a section. */
2320 reader.record_with_info (name, address, ms_type, section);
2323 /* Master parsing procedure for first-pass reading of file symbols
2324 into a partial_symtab. */
2327 parse_partial_symbols (minimal_symbol_reader &reader,
2328 struct objfile *objfile)
2330 struct gdbarch *gdbarch = get_objfile_arch (objfile);
2331 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
2332 const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
2333 const bfd_size_type external_ext_size = debug_swap->external_ext_size;
2334 void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in;
2335 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
2336 void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in;
2338 HDRR *hdr = &debug_info->symbolic_header;
2339 /* Running pointers */
2347 struct partial_symtab *pst;
2348 int textlow_not_set = 1;
2350 /* List of current psymtab's include files. */
2351 const char **psymtab_include_list;
2352 int includes_allocated;
2355 struct pst_map *fdr_to_pst;
2356 /* Index within current psymtab dependency list. */
2357 struct partial_symtab **dependency_list;
2358 int dependencies_used, dependencies_allocated;
2359 struct cleanup *old_chain;
2361 enum language prev_language;
2362 asection *text_sect;
2363 int relocatable = 0;
2365 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2366 the shared libraries are prelinked at a high memory address.
2367 We have to adjust the start address of the object file for this case,
2368 by setting it to the start address of the first procedure in the file.
2369 But we should do no adjustments if we are debugging a .o file, where
2370 the text section (and fh->adr) really starts at zero. */
2371 text_sect = bfd_get_section_by_name (cur_bfd, ".text");
2372 if (text_sect != NULL
2373 && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
2376 extern_tab = (EXTR *) obstack_alloc (&objfile->objfile_obstack,
2377 sizeof (EXTR) * hdr->iextMax);
2379 includes_allocated = 30;
2381 psymtab_include_list = (const char **) alloca (includes_allocated *
2382 sizeof (const char *));
2383 next_symbol_text_func = mdebug_next_symbol_text;
2385 dependencies_allocated = 30;
2386 dependencies_used = 0;
2388 (struct partial_symtab **) alloca (dependencies_allocated *
2389 sizeof (struct partial_symtab *));
2391 set_last_source_file (NULL);
2396 * Only parse the Local and External symbols, and the Relative FDR.
2397 * Fixup enough of the loader symtab to be able to use it.
2398 * Allocate space only for the file's portions we need to
2403 max_glevel = MIN_GLEVEL;
2405 /* Allocate the map FDR -> PST.
2406 Minor hack: -O3 images might claim some global data belongs
2407 to FDR -1. We`ll go along with that. */
2408 fdr_to_pst = XCNEWVEC (struct pst_map, hdr->ifdMax + 1);
2409 old_chain = make_cleanup (xfree, fdr_to_pst);
2412 struct partial_symtab *pst = new_psymtab ("", objfile);
2414 fdr_to_pst[-1].pst = pst;
2418 /* Allocate the global pending list. */
2420 ((struct mdebug_pending **)
2421 obstack_alloc (&objfile->objfile_obstack,
2422 hdr->ifdMax * sizeof (struct mdebug_pending *)));
2423 memset (pending_list, 0,
2424 hdr->ifdMax * sizeof (struct mdebug_pending *));
2426 /* Pass 0 over external syms: swap them in. */
2427 ext_block = XNEWVEC (EXTR, hdr->iextMax);
2428 make_cleanup (xfree, ext_block);
2430 ext_out = (char *) debug_info->external_ext;
2431 ext_out_end = ext_out + hdr->iextMax * external_ext_size;
2433 for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
2434 (*swap_ext_in) (cur_bfd, ext_out, ext_in);
2436 /* Pass 1 over external syms: Presize and partition the list. */
2438 ext_in_end = ext_in + hdr->iextMax;
2439 for (; ext_in < ext_in_end; ext_in++)
2441 /* See calls to complain below. */
2442 if (ext_in->ifd >= -1
2443 && ext_in->ifd < hdr->ifdMax
2444 && ext_in->asym.iss >= 0
2445 && ext_in->asym.iss < hdr->issExtMax)
2446 fdr_to_pst[ext_in->ifd].n_globals++;
2449 /* Pass 1.5 over files: partition out global symbol space. */
2451 for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
2453 fdr_to_pst[f_idx].globals_offset = s_idx;
2454 s_idx += fdr_to_pst[f_idx].n_globals;
2455 fdr_to_pst[f_idx].n_globals = 0;
2460 For ECOFF in ELF, we skip the creation of the minimal symbols.
2461 The ECOFF symbols should be a subset of the Elf symbols, and the
2462 section information of the elf symbols will be more accurate.
2463 FIXME! What about Irix 5's native linker?
2465 By default, Elf sections which don't exist in ECOFF
2466 get put in ECOFF's absolute section by the gnu linker.
2467 Since absolute sections don't get relocated, we
2468 end up calculating an address different from that of
2469 the symbol's minimal symbol (created earlier from the
2472 To fix this, either :
2473 1) don't create the duplicate symbol
2474 (assumes ECOFF symtab is a subset of the ELF symtab;
2475 assumes no side-effects result from ignoring ECOFF symbol)
2476 2) create it, only if lookup for existing symbol in ELF's minimal
2479 assumes no side-effects result from ignoring ECOFF symbol)
2480 3) create it, but lookup ELF's minimal symbol and use it's section
2481 during relocation, then modify "uniqify" phase to merge and
2482 eliminate the duplicate symbol
2483 (highly inefficient)
2485 I've implemented #1 here...
2486 Skip the creation of the minimal symbols based on the ECOFF
2489 /* Pass 2 over external syms: fill in external symbols. */
2491 ext_in_end = ext_in + hdr->iextMax;
2492 for (; ext_in < ext_in_end; ext_in++)
2494 enum minimal_symbol_type ms_type = mst_text;
2495 CORE_ADDR svalue = ext_in->asym.value;
2497 /* The Irix 5 native tools seem to sometimes generate bogus
2498 external symbols. */
2499 if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
2501 complaint (&symfile_complaints,
2502 _("bad ifd for external symbol: %d (max %ld)"),
2503 ext_in->ifd, hdr->ifdMax);
2506 if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
2508 complaint (&symfile_complaints,
2509 _("bad iss for external symbol: %ld (max %ld)"),
2510 ext_in->asym.iss, hdr->issExtMax);
2514 extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
2515 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
2518 if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil)
2522 /* Pass 3 over files, over local syms: fill in static symbols. */
2523 name = debug_info->ssext + ext_in->asym.iss;
2525 /* Process ECOFF Symbol Types and Storage Classes. */
2526 switch (ext_in->asym.st)
2529 /* Beginnning of Procedure */
2532 /* Load time only static procs */
2533 ms_type = mst_file_text;
2536 /* External symbol */
2537 if (SC_IS_COMMON (ext_in->asym.sc))
2539 /* The value of a common symbol is its size, not its address.
2543 else if (SC_IS_DATA (ext_in->asym.sc))
2547 else if (SC_IS_BSS (ext_in->asym.sc))
2551 else if (SC_IS_SBSS (ext_in->asym.sc))
2561 /* On certain platforms, some extra label symbols can be
2562 generated by the linker. One possible usage for this kind
2563 of symbols is to represent the address of the begining of a
2564 given section. For instance, on Tru64 5.1, the address of
2565 the _ftext label is the start address of the .text section.
2567 The storage class of these symbols is usually directly
2568 related to the section to which the symbol refers. For
2569 instance, on Tru64 5.1, the storage class for the _fdata
2570 label is scData, refering to the .data section.
2572 It is actually possible that the section associated to the
2573 storage class of the label does not exist. On True64 5.1
2574 for instance, the libm.so shared library does not contain
2575 any .data section, although it contains a _fpdata label
2576 which storage class is scData... Since these symbols are
2577 usually useless for the debugger user anyway, we just
2578 discard these symbols. */
2580 if (SC_IS_TEXT (ext_in->asym.sc))
2582 if (objfile->sect_index_text == -1)
2585 ms_type = mst_file_text;
2587 else if (SC_IS_DATA (ext_in->asym.sc))
2589 if (objfile->sect_index_data == -1)
2592 ms_type = mst_file_data;
2594 else if (SC_IS_BSS (ext_in->asym.sc))
2596 if (objfile->sect_index_bss == -1)
2599 ms_type = mst_file_bss;
2601 else if (SC_IS_SBSS (ext_in->asym.sc))
2603 const int sbss_sect_index = get_section_index (objfile, ".sbss");
2605 if (sbss_sect_index == -1)
2608 ms_type = mst_file_bss;
2615 /* The alpha has the section start addresses in stLocal symbols
2616 whose name starts with a `.'. Skip those but complain for all
2617 other stLocal symbols.
2618 Irix6 puts the section start addresses in stNil symbols, skip
2624 ms_type = mst_unknown;
2625 unknown_ext_complaint (name);
2627 if (!ECOFF_IN_ELF (cur_bfd))
2628 record_minimal_symbol (reader, name, svalue, ms_type, ext_in->asym.sc,
2632 /* Pass 3 over files, over local syms: fill in static symbols. */
2633 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2635 struct partial_symtab *save_pst;
2639 cur_fdr = fh = debug_info->fdr + f_idx;
2643 fdr_to_pst[f_idx].pst = NULL;
2647 /* Determine the start address for this object file from the
2648 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2652 if (relocatable || textlow != 0)
2653 textlow += ANOFFSET (objfile->section_offsets,
2654 SECT_OFF_TEXT (objfile));
2658 pst = start_psymtab_common (objfile,
2661 objfile->global_psymbols.next,
2662 objfile->static_psymbols.next);
2663 pst->read_symtab_private = obstack_alloc (&objfile->objfile_obstack,
2664 sizeof (struct symloc));
2665 memset (pst->read_symtab_private, 0, sizeof (struct symloc));
2668 FDR_IDX (pst) = f_idx;
2669 CUR_BFD (pst) = cur_bfd;
2670 DEBUG_SWAP (pst) = debug_swap;
2671 DEBUG_INFO (pst) = debug_info;
2672 PENDING_LIST (pst) = pending_list;
2674 /* The way to turn this into a symtab is to call... */
2675 pst->read_symtab = mdebug_read_symtab;
2677 /* Set up language for the pst.
2678 The language from the FDR is used if it is unambigious (e.g. cfront
2679 with native cc and g++ will set the language to C).
2680 Otherwise we have to deduce the language from the filename.
2681 Native ecoff has every header file in a separate FDR, so
2682 deduce_language_from_filename will return language_unknown for
2683 a header file, which is not what we want.
2684 But the FDRs for the header files are after the FDR for the source
2685 file, so we can assign the language of the source file to the
2686 following header files. Then we save the language in the private
2687 pst data so that we can reuse it when building symtabs. */
2688 prev_language = psymtab_language;
2692 case langCplusplusV2:
2693 psymtab_language = language_cplus;
2696 psymtab_language = deduce_language_from_filename (fdr_name (fh));
2699 if (psymtab_language == language_unknown)
2700 psymtab_language = prev_language;
2701 PST_PRIVATE (pst)->pst_language = psymtab_language;
2703 pst->texthigh = pst->textlow;
2705 /* For stabs-in-ecoff files, the second symbol must be @stab.
2706 This symbol is emitted by mips-tfile to signal that the
2707 current object file uses encapsulated stabs instead of mips
2708 ecoff for local symbols. (It is the second symbol because
2709 the first symbol is the stFile used to signal the start of a
2711 processing_gcc_compilation = 0;
2714 (*swap_sym_in) (cur_bfd,
2715 ((char *) debug_info->external_sym
2716 + (fh->isymBase + 1) * external_sym_size),
2718 if (strcmp (debug_info->ss + fh->issBase + sh.iss,
2720 processing_gcc_compilation = 2;
2723 if (processing_gcc_compilation != 0)
2725 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
2728 const char *namestring;
2730 (*swap_sym_in) (cur_bfd,
2731 (((char *) debug_info->external_sym)
2732 + (fh->isymBase + cur_sdx) * external_sym_size),
2734 type_code = ECOFF_UNMARK_STAB (sh.index);
2735 if (!ECOFF_IS_STAB (&sh))
2737 if (sh.st == stProc || sh.st == stStaticProc)
2742 if (sh.st == stStaticProc)
2744 namestring = debug_info->ss + fh->issBase + sh.iss;
2745 record_minimal_symbol (reader, namestring, sh.value,
2746 mst_file_text, sh.sc,
2749 sh.value += ANOFFSET (objfile->section_offsets,
2750 SECT_OFF_TEXT (objfile));
2751 procaddr = sh.value;
2753 isym = AUX_GET_ISYM (fh->fBigendian,
2754 (debug_info->external_aux
2757 (*swap_sym_in) (cur_bfd,
2758 ((char *) debug_info->external_sym
2759 + ((fh->isymBase + isym - 1)
2760 * external_sym_size)),
2764 CORE_ADDR high = procaddr + sh.value;
2766 /* Kludge for Irix 5.2 zero fh->adr. */
2768 && (pst->textlow == 0 || procaddr < pst->textlow))
2769 pst->textlow = procaddr;
2770 if (high > pst->texthigh)
2771 pst->texthigh = high;
2774 else if (sh.st == stStatic)
2789 namestring = debug_info->ss + fh->issBase + sh.iss;
2790 record_minimal_symbol (reader, namestring, sh.value,
2791 mst_file_data, sh.sc,
2793 sh.value += ANOFFSET (objfile->section_offsets,
2794 SECT_OFF_DATA (objfile));
2798 /* FIXME! Shouldn't this use cases for bss,
2799 then have the default be abs? */
2800 namestring = debug_info->ss + fh->issBase + sh.iss;
2801 record_minimal_symbol (reader, namestring, sh.value,
2802 mst_file_bss, sh.sc,
2804 sh.value += ANOFFSET (objfile->section_offsets,
2805 SECT_OFF_BSS (objfile));
2811 /* Handle stabs continuation. */
2813 char *stabstring = debug_info->ss + fh->issBase + sh.iss;
2814 int len = strlen (stabstring);
2816 while (stabstring[len - 1] == '\\')
2819 char *stabstring1 = stabstring;
2823 /* Ignore continuation char from 1st string. */
2826 /* Read next stabstring. */
2828 (*swap_sym_in) (cur_bfd,
2829 (((char *) debug_info->external_sym)
2830 + (fh->isymBase + cur_sdx)
2831 * external_sym_size),
2833 stabstring2 = debug_info->ss + fh->issBase + sh2.iss;
2834 len2 = strlen (stabstring2);
2836 /* Concatinate stabstring2 with stabstring1. */
2838 && stabstring != debug_info->ss + fh->issBase + sh.iss)
2840 = (char *) xrealloc (stabstring, len + len2 + 1);
2843 stabstring = (char *) xmalloc (len + len2 + 1);
2844 strcpy (stabstring, stabstring1);
2846 strcpy (stabstring + len, stabstring2);
2854 /* Standard, external, non-debugger, symbols. */
2856 case N_TEXT | N_EXT:
2857 case N_NBTEXT | N_EXT:
2858 sh.value += ANOFFSET (objfile->section_offsets,
2859 SECT_OFF_TEXT (objfile));
2862 case N_DATA | N_EXT:
2863 case N_NBDATA | N_EXT:
2864 sh.value += ANOFFSET (objfile->section_offsets,
2865 SECT_OFF_DATA (objfile));
2870 case N_NBBSS | N_EXT:
2871 case N_SETV | N_EXT: /* FIXME, is this in BSS? */
2872 sh.value += ANOFFSET (objfile->section_offsets,
2873 SECT_OFF_BSS (objfile));
2880 /* Standard, local, non-debugger, symbols. */
2884 /* We need to be able to deal with both N_FN or
2885 N_TEXT, because we have no way of knowing
2886 whether the sys-supplied ld or GNU ld was used
2887 to make the executable. Sequents throw in
2888 another wrinkle -- they renumbered N_FN. */
2896 sh.value += ANOFFSET (objfile->section_offsets,
2897 SECT_OFF_DATA (objfile));
2900 case N_UNDF | N_EXT:
2901 continue; /* Just undefined, not COMMON. */
2906 /* Lots of symbol types we can just ignore. */
2913 /* Keep going . . . */
2916 * Special symbol types for GNU
2919 case N_INDR | N_EXT:
2921 case N_SETA | N_EXT:
2923 case N_SETT | N_EXT:
2925 case N_SETD | N_EXT:
2927 case N_SETB | N_EXT:
2937 static int prev_so_symnum = -10;
2940 /* A zero value is probably an indication for the
2941 SunPRO 3.0 compiler. dbx_end_psymtab explicitly tests
2942 for zero, so don't relocate it. */
2945 && gdbarch_sofun_address_maybe_missing (gdbarch))
2946 textlow_not_set = 1;
2948 textlow_not_set = 0;
2950 if (prev_so_symnum != symnum - 1)
2951 { /* Here if prev stab wasn't N_SO. */
2954 pst = (struct partial_symtab *) 0;
2956 dependencies_used = 0;
2960 prev_so_symnum = symnum;
2962 /* End the current partial symtab and start a
2965 /* SET_NAMESTRING ();*/
2966 namestring = stabstring;
2968 /* Null name means end of .o file. Don't start a new
2970 if (*namestring == '\000')
2973 /* Some compilers (including gcc) emit a pair of
2974 initial N_SOs. The first one is a directory name;
2975 the second the file name. If pst exists, is
2976 empty, and has a filename ending in '/', we assume
2977 the previous N_SO was a directory name. */
2978 p = lbasename (namestring);
2979 if (p != namestring && *p == '\000')
2980 continue; /* Simply ignore directory
2983 /* Some other compilers (C++ ones in particular) emit
2984 useless SOs for non-existant .c files. We ignore
2985 all subsequent SOs that immediately follow the
2998 enum language tmp_language;
3000 /* Mark down an include file in the current psymtab. */
3002 /* SET_NAMESTRING (); */
3003 namestring = stabstring;
3006 = deduce_language_from_filename (namestring);
3008 /* Only change the psymtab's language if we've
3009 learned something useful (eg. tmp_language is not
3010 language_unknown). In addition, to match what
3011 start_subfile does, never change from C++ to
3013 if (tmp_language != language_unknown
3014 && (tmp_language != language_c
3015 || psymtab_language != language_cplus))
3016 psymtab_language = tmp_language;
3018 /* In C++, one may expect the same filename to come
3019 round many times, when code is coming alternately
3020 from the main file and from inline functions in
3021 other files. So I check to see if this is a file
3022 we've seen before -- either the main source file,
3023 or a previously included file.
3025 This seems to be a lot of time to be spending on
3026 N_SOL, but things like "break c-exp.y:435" need to
3027 work (I suppose the psymtab_include_list could be
3028 hashed or put in a binary tree, if profiling shows
3029 this is a major hog). */
3030 if (pst && filename_cmp (namestring, pst->filename) == 0)
3036 for (i = 0; i < includes_used; i++)
3037 if (filename_cmp (namestring,
3038 psymtab_include_list[i]) == 0)
3047 psymtab_include_list[includes_used++] = namestring;
3048 if (includes_used >= includes_allocated)
3050 const char **orig = psymtab_include_list;
3052 psymtab_include_list = (const char **)
3053 alloca ((includes_allocated *= 2) *
3054 sizeof (const char *));
3055 memcpy (psymtab_include_list, orig,
3056 includes_used * sizeof (const char *));
3060 case N_LSYM: /* Typedef or automatic variable. */
3061 case N_STSYM: /* Data seg var -- static */
3062 case N_LCSYM: /* BSS " */
3063 case N_ROSYM: /* Read-only data seg var -- static. */
3064 case N_NBSTS: /* Gould nobase. */
3065 case N_NBLCS: /* symbols. */
3067 case N_GSYM: /* Global (extern) variable; can be
3068 data or bss (sigh FIXME). */
3070 /* Following may probably be ignored; I'll leave them here
3071 for now (until I do Pascal and Modula 2 extensions). */
3073 case N_PC: /* I may or may not need this; I
3075 case N_M2C: /* I suspect that I can ignore this
3077 case N_SCOPE: /* Same. */
3079 /* SET_NAMESTRING (); */
3080 namestring = stabstring;
3081 p = (char *) strchr (namestring, ':');
3083 continue; /* Not a debugging symbol. */
3087 /* Main processing section for debugging symbols which
3088 the initial read through the symbol tables needs to
3089 worry about. If we reach this point, the symbol
3090 which we are considering is definitely one we are
3091 interested in. p must also contain the (valid)
3092 index into the namestring which indicates the
3093 debugging type symbol. */
3098 sh.value += ANOFFSET (objfile->section_offsets,
3099 SECT_OFF_DATA (objfile));
3101 if (gdbarch_static_transform_name_p (gdbarch))
3102 namestring = gdbarch_static_transform_name
3103 (gdbarch, namestring);
3105 add_psymbol_to_list (namestring, p - namestring, 1,
3106 VAR_DOMAIN, LOC_STATIC,
3107 &objfile->static_psymbols,
3109 psymtab_language, objfile);
3112 sh.value += ANOFFSET (objfile->section_offsets,
3113 SECT_OFF_DATA (objfile));
3114 /* The addresses in these entries are reported
3115 to be wrong. See the code that reads 'G's
3117 add_psymbol_to_list (namestring, p - namestring, 1,
3118 VAR_DOMAIN, LOC_STATIC,
3119 &objfile->global_psymbols,
3121 psymtab_language, objfile);
3125 /* When a 'T' entry is defining an anonymous enum, it
3126 may have a name which is the empty string, or a
3127 single space. Since they're not really defining a
3128 symbol, those shouldn't go in the partial symbol
3129 table. We do pick up the elements of such enums at
3130 'check_enum:', below. */
3131 if (p >= namestring + 2
3132 || (p == namestring + 1
3133 && namestring[0] != ' '))
3135 add_psymbol_to_list (namestring, p - namestring, 1,
3136 STRUCT_DOMAIN, LOC_TYPEDEF,
3137 &objfile->static_psymbols,
3138 0, psymtab_language, objfile);
3141 /* Also a typedef with the same name. */
3142 add_psymbol_to_list (namestring,
3144 VAR_DOMAIN, LOC_TYPEDEF,
3145 &objfile->static_psymbols,
3146 0, psymtab_language,
3153 if (p != namestring) /* a name is there, not
3156 add_psymbol_to_list (namestring, p - namestring, 1,
3157 VAR_DOMAIN, LOC_TYPEDEF,
3158 &objfile->static_psymbols,
3159 0, psymtab_language, objfile);
3162 /* If this is an enumerated type, we need to add
3163 all the enum constants to the partial symbol
3164 table. This does not cover enums without names,
3165 e.g. "enum {a, b} c;" in C, but fortunately
3166 those are rare. There is no way for GDB to find
3167 those from the enum type without spending too
3168 much time on it. Thus to solve this problem,
3169 the compiler needs to put out the enum in a
3170 nameless type. GCC2 does this. */
3172 /* We are looking for something of the form
3173 <name> ":" ("t" | "T") [<number> "="] "e"
3174 {<constant> ":" <value> ","} ";". */
3176 /* Skip over the colon and the 't' or 'T'. */
3178 /* This type may be given a number. Also, numbers
3179 can come in pairs like (0,26). Skip over it. */
3180 while ((*p >= '0' && *p <= '9')
3181 || *p == '(' || *p == ',' || *p == ')'
3187 /* The aix4 compiler emits extra crud before
3191 /* Skip over the type (?). */
3195 /* Skip over the colon. */
3199 /* We have found an enumerated type. */
3200 /* According to comments in read_enum_type
3201 a comma could end it instead of a semicolon.
3202 I don't know where that happens.
3204 while (*p && *p != ';' && *p != ',')
3208 /* Check for and handle cretinous dbx
3209 symbol name continuation! */
3210 if (*p == '\\' || (*p == '?' && p[1] == '\0'))
3211 p = next_symbol_text (objfile);
3213 /* Point to the character after the name
3214 of the enum constant. */
3215 for (q = p; *q && *q != ':'; q++)
3217 /* Note that the value doesn't matter for
3218 enum constants in psymtabs, just in
3220 add_psymbol_to_list (p, q - p, 1,
3221 VAR_DOMAIN, LOC_CONST,
3222 &objfile->static_psymbols,
3223 0, psymtab_language,
3225 /* Point past the name. */
3227 /* Skip over the value. */
3228 while (*p && *p != ',')
3230 /* Advance past the comma. */
3237 /* Constant, e.g. from "const" in Pascal. */
3238 add_psymbol_to_list (namestring, p - namestring, 1,
3239 VAR_DOMAIN, LOC_CONST,
3240 &objfile->static_psymbols,
3241 0, psymtab_language, objfile);
3247 int name_len = p - namestring;
3248 char *name = (char *) xmalloc (name_len + 1);
3250 memcpy (name, namestring, name_len);
3251 name[name_len] = '\0';
3252 function_outside_compilation_unit_complaint (name);
3255 sh.value += ANOFFSET (objfile->section_offsets,
3256 SECT_OFF_TEXT (objfile));
3257 add_psymbol_to_list (namestring, p - namestring, 1,
3258 VAR_DOMAIN, LOC_BLOCK,
3259 &objfile->static_psymbols,
3261 psymtab_language, objfile);
3264 /* Global functions were ignored here, but now they
3265 are put into the global psymtab like one would
3266 expect. They're also in the minimal symbol
3271 int name_len = p - namestring;
3272 char *name = (char *) xmalloc (name_len + 1);
3274 memcpy (name, namestring, name_len);
3275 name[name_len] = '\0';
3276 function_outside_compilation_unit_complaint (name);
3279 sh.value += ANOFFSET (objfile->section_offsets,
3280 SECT_OFF_TEXT (objfile));
3281 add_psymbol_to_list (namestring, p - namestring, 1,
3282 VAR_DOMAIN, LOC_BLOCK,
3283 &objfile->global_psymbols,
3285 psymtab_language, objfile);
3288 /* Two things show up here (hopefully); static
3289 symbols of local scope (static used inside
3290 braces) or extensions of structure symbols. We
3305 case '#': /* For symbol identification (used
3310 /* It is a C++ nested symbol. We don't need to
3311 record it (I don't think); if we try to look up
3312 foo::bar::baz, then symbols for the symtab
3313 containing foo should get read in, I think. */
3314 /* Someone says sun cc puts out symbols like
3315 /foo/baz/maclib::/usr/local/bin/maclib,
3316 which would get here with a symbol type of ':'. */
3320 /* Unexpected symbol descriptor. The second and
3321 subsequent stabs of a continued stab can show up
3322 here. The question is whether they ever can
3323 mimic a normal stab--it would be nice if not,
3324 since we certainly don't want to spend the time
3325 searching to the end of every string looking for
3328 complaint (&symfile_complaints,
3329 _("unknown symbol descriptor `%c'"), p[1]);
3331 /* Ignore it; perhaps it is an extension that we don't
3340 /* Solaris 2 end of module, finish current partial
3341 symbol table. dbx_end_psymtab will set
3342 pst->texthigh to the proper value, which is
3343 necessary if a module compiled without
3344 debugging info follows this module. */
3346 && gdbarch_sofun_address_maybe_missing (gdbarch))
3348 pst = (struct partial_symtab *) 0;
3350 dependencies_used = 0;
3355 if (sh.value > save_pst->texthigh)
3356 save_pst->texthigh = sh.value;
3361 case N_SSYM: /* Claim: Structure or union
3362 element. Hopefully, I can
3364 case N_ENTRY: /* Alternate entry point; can
3366 case N_MAIN: /* Can definitely ignore this. */
3367 case N_CATCH: /* These are GNU C++ extensions. */
3368 case N_EHDECL: /* that can safely be ignored here. */
3378 case N_NSYMS: /* Ultrix 4.0: symbol count */
3379 case N_DEFD: /* GNU Modula-2 */
3380 case N_ALIAS: /* SunPro F77: alias name, ignore
3383 case N_OBJ: /* Useless types from Solaris. */
3385 /* These symbols aren't interesting; don't worry about
3391 /* If we haven't found it yet, ignore it. It's
3392 probably some new type we don't know about yet. */
3393 complaint (&symfile_complaints,
3394 _("unknown symbol type %s"),
3395 hex_string (type_code)); /* CUR_SYMBOL_TYPE */
3399 && stabstring != debug_info->ss + fh->issBase + sh.iss)
3402 /* end - Handle continuation */
3407 for (cur_sdx = 0; cur_sdx < fh->csym;)
3410 enum address_class theclass;
3411 CORE_ADDR minsym_value;
3413 (*swap_sym_in) (cur_bfd,
3414 ((char *) debug_info->external_sym
3415 + ((fh->isymBase + cur_sdx)
3416 * external_sym_size)),
3419 if (ECOFF_IS_STAB (&sh))
3425 /* Non absolute static symbols go into the minimal table. */
3426 if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil
3427 || (sh.index == indexNil
3428 && (sh.st != stStatic || sh.sc == scAbs)))
3430 /* FIXME, premature? */
3435 name = debug_info->ss + fh->issBase + sh.iss;
3437 minsym_value = sh.value;
3443 /* The value of a stEnd symbol is the displacement from the
3444 corresponding start symbol value, do not relocate it. */
3446 sh.value += ANOFFSET (objfile->section_offsets,
3447 SECT_OFF_TEXT (objfile));
3454 sh.value += ANOFFSET (objfile->section_offsets,
3455 SECT_OFF_DATA (objfile));
3459 sh.value += ANOFFSET (objfile->section_offsets,
3460 SECT_OFF_BSS (objfile));
3471 reader.record_with_info (name, minsym_value,
3473 SECT_OFF_TEXT (objfile));
3478 /* Ignore all parameter symbol records. */
3479 if (sh.index >= hdr->iauxMax)
3481 /* Should not happen, but does when cross-compiling
3482 with the MIPS compiler. FIXME -- pull later. */
3483 index_complaint (name);
3484 new_sdx = cur_sdx + 1; /* Don't skip at all. */
3487 new_sdx = AUX_GET_ISYM (fh->fBigendian,
3488 (debug_info->external_aux
3492 if (new_sdx <= cur_sdx)
3494 /* This should not happen either... FIXME. */
3495 complaint (&symfile_complaints,
3496 _("bad proc end in aux found from symbol %s"),
3498 new_sdx = cur_sdx + 1; /* Don't skip backward. */
3501 /* For stProc symbol records, we need to check the
3502 storage class as well, as only (stProc, scText)
3503 entries represent "real" procedures - See the
3504 Compaq document titled "Object File / Symbol Table
3505 Format Specification" for more information. If the
3506 storage class is not scText, we discard the whole
3507 block of symbol records for this stProc. */
3508 if (sh.st == stProc && sh.sc != scText)
3511 /* Usually there is a local and a global stProc symbol
3512 for a function. This means that the function name
3513 has already been entered into the mimimal symbol table
3514 while processing the global symbols in pass 2 above.
3515 One notable exception is the PROGRAM name from
3516 f77 compiled executables, it is only put out as
3517 local stProc symbol, and a global MAIN__ stProc symbol
3518 points to it. It doesn't matter though, as gdb is
3519 still able to find the PROGRAM name via the partial
3520 symbol table, and the MAIN__ symbol via the minimal
3522 if (sh.st == stProc)
3523 add_psymbol_to_list (name, strlen (name), 1,
3524 VAR_DOMAIN, LOC_BLOCK,
3525 &objfile->global_psymbols,
3526 sh.value, psymtab_language, objfile);
3528 add_psymbol_to_list (name, strlen (name), 1,
3529 VAR_DOMAIN, LOC_BLOCK,
3530 &objfile->static_psymbols,
3531 sh.value, psymtab_language, objfile);
3533 procaddr = sh.value;
3536 (*swap_sym_in) (cur_bfd,
3537 ((char *) debug_info->external_sym
3538 + ((fh->isymBase + cur_sdx - 1)
3539 * external_sym_size)),
3544 /* Kludge for Irix 5.2 zero fh->adr. */
3546 && (pst->textlow == 0 || procaddr < pst->textlow))
3547 pst->textlow = procaddr;
3549 high = procaddr + sh.value;
3550 if (high > pst->texthigh)
3551 pst->texthigh = high;
3554 case stStatic: /* Variable */
3555 if (SC_IS_DATA (sh.sc))
3556 reader.record_with_info (name, minsym_value,
3558 SECT_OFF_DATA (objfile));
3560 reader.record_with_info (name, minsym_value,
3562 SECT_OFF_BSS (objfile));
3563 theclass = LOC_STATIC;
3566 case stIndirect: /* Irix5 forward declaration */
3567 /* Skip forward declarations from Irix5 cc. */
3570 case stTypedef: /* Typedef */
3571 /* Skip typedefs for forward declarations and opaque
3572 structs from alpha and mips cc. */
3573 if (sh.iss == 0 || has_opaque_xref (fh, &sh))
3575 theclass = LOC_TYPEDEF;
3578 case stConstant: /* Constant decl */
3579 theclass = LOC_CONST;
3585 case stBlock: /* { }, str, un, enum */
3586 /* Do not create a partial symbol for cc unnamed aggregates
3587 and gcc empty aggregates. */
3588 if ((sh.sc == scInfo
3589 || SC_IS_COMMON (sh.sc))
3591 && sh.index != cur_sdx + 2)
3593 add_psymbol_to_list (name, strlen (name), 1,
3594 STRUCT_DOMAIN, LOC_TYPEDEF,
3595 &objfile->static_psymbols,
3596 0, psymtab_language, objfile);
3598 handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);
3600 /* Skip over the block. */
3602 if (new_sdx <= cur_sdx)
3604 /* This happens with the Ultrix kernel. */
3605 complaint (&symfile_complaints,
3606 _("bad aux index at block symbol %s"), name);
3607 new_sdx = cur_sdx + 1; /* Don't skip backward. */
3612 case stFile: /* File headers */
3613 case stLabel: /* Labels */
3614 case stEnd: /* Ends of files */
3617 case stLocal: /* Local variables */
3618 /* Normally these are skipped because we skip over
3619 all blocks we see. However, these can occur
3620 as visible symbols in a .h file that contains code. */
3624 /* Both complaints are valid: one gives symbol name,
3625 the other the offending symbol type. */
3626 complaint (&symfile_complaints, _("unknown local symbol %s"),
3628 complaint (&symfile_complaints, _("with type %d"), sh.st);
3632 /* Use this gdb symbol. */
3633 add_psymbol_to_list (name, strlen (name), 1,
3634 VAR_DOMAIN, theclass,
3635 &objfile->static_psymbols,
3636 sh.value, psymtab_language, objfile);
3638 cur_sdx++; /* Go to next file symbol. */
3641 /* Now do enter the external symbols. */
3642 ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
3643 cur_sdx = fdr_to_pst[f_idx].n_globals;
3644 PST_PRIVATE (save_pst)->extern_count = cur_sdx;
3645 PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
3646 for (; --cur_sdx >= 0; ext_ptr++)
3648 enum address_class theclass;
3653 if (ext_ptr->ifd != f_idx)
3654 internal_error (__FILE__, __LINE__,
3655 _("failed internal consistency check"));
3656 psh = &ext_ptr->asym;
3658 /* Do not add undefined symbols to the partial symbol table. */
3659 if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil)
3662 svalue = psh->value;
3667 svalue += ANOFFSET (objfile->section_offsets,
3668 SECT_OFF_TEXT (objfile));
3675 svalue += ANOFFSET (objfile->section_offsets,
3676 SECT_OFF_DATA (objfile));
3680 svalue += ANOFFSET (objfile->section_offsets,
3681 SECT_OFF_BSS (objfile));
3688 /* These are generated for static symbols in .o files,
3693 /* External procedure symbols have been entered
3694 into the minimal symbol table in pass 2 above.
3695 Ignore them, as parse_external will ignore them too. */
3698 theclass = LOC_LABEL;
3701 unknown_ext_complaint (debug_info->ssext + psh->iss);
3702 /* Fall through, pretend it's global. */
3704 /* Global common symbols are resolved by the runtime loader,
3706 if (SC_IS_COMMON (psh->sc))
3709 theclass = LOC_STATIC;
3712 name = debug_info->ssext + psh->iss;
3713 add_psymbol_to_list (name, strlen (name), 1,
3714 VAR_DOMAIN, theclass,
3715 &objfile->global_psymbols,
3716 svalue, psymtab_language, objfile);
3720 /* Link pst to FDR. dbx_end_psymtab returns NULL if the psymtab was
3721 empty and put on the free list. */
3722 fdr_to_pst[f_idx].pst
3723 = dbx_end_psymtab (objfile, save_pst,
3724 psymtab_include_list, includes_used,
3725 -1, save_pst->texthigh,
3726 dependency_list, dependencies_used,
3729 dependencies_used = 0;
3731 /* The objfile has its functions reordered if this partial symbol
3732 table overlaps any other partial symbol table.
3733 We cannot assume a reordered objfile if a partial symbol table
3734 is contained within another partial symbol table, as partial symbol
3735 tables for include files with executable code are contained
3736 within the partial symbol table for the including source file,
3737 and we do not want to flag the objfile reordered for these cases.
3739 This strategy works well for Irix-5.2 shared libraries, but we
3740 might have to use a more elaborate (and slower) algorithm for
3742 save_pst = fdr_to_pst[f_idx].pst;
3743 if (save_pst != NULL
3744 && save_pst->textlow != 0
3745 && !(objfile->flags & OBJF_REORDERED))
3747 ALL_OBJFILE_PSYMTABS (objfile, pst)
3750 && save_pst->textlow >= pst->textlow
3751 && save_pst->textlow < pst->texthigh
3752 && save_pst->texthigh > pst->texthigh)
3754 objfile->flags |= OBJF_REORDERED;
3761 /* Now scan the FDRs for dependencies. */
3762 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
3764 fh = f_idx + debug_info->fdr;
3765 pst = fdr_to_pst[f_idx].pst;
3767 if (pst == (struct partial_symtab *) NULL)
3770 /* This should catch stabs-in-ecoff. */
3774 /* Skip the first file indirect entry as it is a self dependency for
3775 source files or a reverse .h -> .c dependency for header files. */
3776 pst->number_of_dependencies = 0;
3778 ((struct partial_symtab **)
3779 obstack_alloc (&objfile->objfile_obstack,
3781 * sizeof (struct partial_symtab *))));
3782 for (s_idx = 1; s_idx < fh->crfd; s_idx++)
3786 (*swap_rfd_in) (cur_bfd,
3787 ((char *) debug_info->external_rfd
3788 + (fh->rfdBase + s_idx) * external_rfd_size),
3790 if (rh < 0 || rh >= hdr->ifdMax)
3792 complaint (&symfile_complaints, _("bad file number %ld"), rh);
3796 /* Skip self dependencies of header files. */
3800 /* Do not add to dependeny list if psymtab was empty. */
3801 if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL)
3803 pst->dependencies[pst->number_of_dependencies++]
3804 = fdr_to_pst[rh].pst;
3808 /* Remove the dummy psymtab created for -O3 images above, if it is
3809 still empty, to enable the detection of stripped executables. */
3810 if (objfile->psymtabs->next == NULL
3811 && objfile->psymtabs->number_of_dependencies == 0
3812 && objfile->psymtabs->n_global_syms == 0
3813 && objfile->psymtabs->n_static_syms == 0)
3814 objfile->psymtabs = NULL;
3815 do_cleanups (old_chain);
3818 /* If the current psymbol has an enumerated type, we need to add
3819 all the enum constants to the partial symbol table. */
3822 handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype,
3825 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
3826 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
3827 char *ext_sym = ((char *) debug_info->external_sym
3828 + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
3838 /* It is an enumerated type if the next symbol entry is a stMember
3839 and its auxiliary index is indexNil or its auxiliary entry
3840 is a plain btNil or btVoid.
3841 Alpha cc -migrate enums are recognized by a zero index and
3842 a zero symbol value.
3843 DU 4.0 cc enums are recognized by a member type of btEnum without
3844 qualifiers and a zero symbol value. */
3845 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3846 if (sh.st != stMember)
3849 if (sh.index == indexNil
3850 || (sh.index == 0 && svalue == 0))
3852 (*debug_swap->swap_tir_in) (fh->fBigendian,
3853 &(debug_info->external_aux
3854 + fh->iauxBase + sh.index)->a_ti,
3856 if ((tir.bt != btNil
3858 && (tir.bt != btEnum || svalue != 0))
3859 || tir.tq0 != tqNil)
3871 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3872 if (sh.st != stMember)
3874 name = debug_info->ss + cur_fdr->issBase + sh.iss;
3876 /* Note that the value doesn't matter for enum constants
3877 in psymtabs, just in symtabs. */
3878 add_psymbol_to_list (name, strlen (name), 1,
3879 VAR_DOMAIN, LOC_CONST,
3880 &objfile->static_psymbols,
3881 0, psymtab_language, objfile);
3882 ext_sym += external_sym_size;
3886 /* Get the next symbol. OBJFILE is unused. */
3889 mdebug_next_symbol_text (struct objfile *objfile)
3894 (*debug_swap->swap_sym_in) (cur_bfd,
3895 ((char *) debug_info->external_sym
3896 + ((cur_fdr->isymBase + cur_sdx)
3897 * debug_swap->external_sym_size)),
3899 return debug_info->ss + cur_fdr->issBase + sh.iss;
3902 /* Ancillary function to psymtab_to_symtab(). Does all the work
3903 for turning the partial symtab PST into a symtab, recurring
3904 first on all dependent psymtabs. The argument FILENAME is
3905 only passed so we can see in debug stack traces what file
3908 This function has a split personality, based on whether the
3909 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3910 The flow of control and even the memory allocation differs. FIXME. */
3913 psymtab_to_symtab_1 (struct objfile *objfile,
3914 struct partial_symtab *pst, const char *filename)
3916 bfd_size_type external_sym_size;
3917 bfd_size_type external_pdr_size;
3918 void (*swap_sym_in) (bfd *, void *, SYMR *);
3919 void (*swap_pdr_in) (bfd *, void *, PDR *);
3921 struct compunit_symtab *cust = NULL;
3923 struct linetable *lines;
3924 CORE_ADDR lowest_pdr_addr = 0;
3925 int last_symtab_ended = 0;
3926 struct section_offsets *section_offsets = objfile->section_offsets;
3932 /* Read in all partial symbtabs on which this one is dependent.
3933 NOTE that we do have circular dependencies, sigh. We solved
3934 that by setting pst->readin before this point. */
3936 for (i = 0; i < pst->number_of_dependencies; i++)
3937 if (!pst->dependencies[i]->readin)
3939 /* Inform about additional files to be read in. */
3942 fputs_filtered (" ", gdb_stdout);
3944 fputs_filtered ("and ", gdb_stdout);
3946 printf_filtered ("%s...",
3947 pst->dependencies[i]->filename);
3948 wrap_here (""); /* Flush output */
3949 gdb_flush (gdb_stdout);
3951 /* We only pass the filename for debug purposes. */
3952 psymtab_to_symtab_1 (objfile, pst->dependencies[i],
3953 pst->dependencies[i]->filename);
3956 /* Do nothing if this is a dummy psymtab. */
3958 if (pst->n_global_syms == 0 && pst->n_static_syms == 0
3959 && pst->textlow == 0 && pst->texthigh == 0)
3962 /* Now read the symbols for this symtab. */
3964 cur_bfd = CUR_BFD (pst);
3965 debug_swap = DEBUG_SWAP (pst);
3966 debug_info = DEBUG_INFO (pst);
3967 pending_list = PENDING_LIST (pst);
3968 external_sym_size = debug_swap->external_sym_size;
3969 external_pdr_size = debug_swap->external_pdr_size;
3970 swap_sym_in = debug_swap->swap_sym_in;
3971 swap_pdr_in = debug_swap->swap_pdr_in;
3972 mdebugread_objfile = objfile;
3973 cur_fd = FDR_IDX (pst);
3974 fh = ((cur_fd == -1)
3976 : debug_info->fdr + cur_fd);
3979 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3980 processing_gcc_compilation = 0;
3981 if (fh != (FDR *) NULL && fh->csym >= 2)
3985 (*swap_sym_in) (cur_bfd,
3986 ((char *) debug_info->external_sym
3987 + (fh->isymBase + 1) * external_sym_size),
3989 if (strcmp (debug_info->ss + fh->issBase + sh.iss,
3992 /* We indicate that this is a GCC compilation so that certain
3993 features will be enabled in stabsread/dbxread. */
3994 processing_gcc_compilation = 2;
3998 if (processing_gcc_compilation != 0)
4000 struct gdbarch *gdbarch = get_objfile_arch (objfile);
4002 /* This symbol table contains stabs-in-ecoff entries. */
4004 /* Parse local symbols first. */
4006 if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr. */
4008 mdebugread_objfile = NULL;
4011 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
4017 (*swap_sym_in) (cur_bfd,
4018 (((char *) debug_info->external_sym)
4019 + (fh->isymBase + cur_sdx) * external_sym_size),
4021 name = debug_info->ss + fh->issBase + sh.iss;
4023 /* XXX This is a hack. It will go away! */
4024 if (ECOFF_IS_STAB (&sh) || (name[0] == '#'))
4026 int type_code = ECOFF_UNMARK_STAB (sh.index);
4028 /* We should never get non N_STAB symbols here, but they
4029 should be harmless, so keep process_one_symbol from
4030 complaining about them. */
4031 if (type_code & N_STAB)
4033 /* If we found a trailing N_SO with no name, process
4034 it here instead of in process_one_symbol, so we
4035 can keep a handle to its symtab. The symtab
4036 would otherwise be ended twice, once in
4037 process_one_symbol, and once after this loop. */
4038 if (type_code == N_SO
4039 && get_last_source_file ()
4040 && previous_stab_code != (unsigned char) N_SO
4043 valu += ANOFFSET (section_offsets,
4044 SECT_OFF_TEXT (objfile));
4045 previous_stab_code = N_SO;
4046 cust = end_symtab (valu, SECT_OFF_TEXT (objfile));
4048 last_symtab_ended = 1;
4052 last_symtab_ended = 0;
4053 process_one_symbol (type_code, 0, valu, name,
4054 section_offsets, objfile);
4057 /* Similarly a hack. */
4058 else if (name[0] == '#')
4060 process_one_symbol (N_SLINE, 0, valu, name,
4061 section_offsets, objfile);
4063 if (type_code == N_FUN)
4065 /* Make up special symbol to contain
4066 procedure specific info. */
4067 struct mdebug_extra_func_info *e =
4068 ((struct mdebug_extra_func_info *)
4069 obstack_alloc (&mdebugread_objfile->objfile_obstack,
4070 sizeof (struct mdebug_extra_func_info)));
4071 struct symbol *s = new_symbol (MDEBUG_EFI_SYMBOL_NAME);
4073 memset (e, 0, sizeof (struct mdebug_extra_func_info));
4074 SYMBOL_DOMAIN (s) = LABEL_DOMAIN;
4075 SYMBOL_ACLASS_INDEX (s) = LOC_CONST;
4076 SYMBOL_TYPE (s) = objfile_type (objfile)->builtin_void;
4077 SYMBOL_VALUE_BYTES (s) = (gdb_byte *) e;
4078 e->pdr.framereg = -1;
4079 add_symbol_to_list (s, &local_symbols);
4082 else if (sh.st == stLabel)
4084 if (sh.index == indexNil)
4086 /* This is what the gcc2_compiled and __gnu_compiled_*
4087 show up as. So don't complain. */
4092 /* Handle encoded stab line number. */
4093 valu += ANOFFSET (section_offsets,
4094 SECT_OFF_TEXT (objfile));
4095 record_line (current_subfile, sh.index,
4096 gdbarch_addr_bits_remove (gdbarch, valu));
4099 else if (sh.st == stProc || sh.st == stStaticProc
4100 || sh.st == stStatic || sh.st == stEnd)
4101 /* These are generated by gcc-2.x, do not complain. */
4104 complaint (&symfile_complaints,
4105 _("unknown stabs symbol %s"), name);
4108 if (! last_symtab_ended)
4110 cust = end_symtab (pst->texthigh, SECT_OFF_TEXT (objfile));
4114 /* There used to be a call to sort_blocks here, but this should not
4115 be necessary for stabs symtabs. And as sort_blocks modifies the
4116 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4117 it did the wrong thing if the first procedure in a file was
4118 generated via asm statements. */
4120 /* Fill in procedure info next. */
4124 struct cleanup *old_chain;
4130 pr_block = XNEWVEC (PDR, fh->cpd);
4131 old_chain = make_cleanup (xfree, pr_block);
4133 pdr_ptr = ((char *) debug_info->external_pdr
4134 + fh->ipdFirst * external_pdr_size);
4135 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
4139 pdr_ptr += external_pdr_size, pdr_in++)
4141 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
4143 /* Determine lowest PDR address, the PDRs are not always
4145 if (pdr_in == pr_block)
4146 lowest_pdr_addr = pdr_in->adr;
4147 else if (pdr_in->adr < lowest_pdr_addr)
4148 lowest_pdr_addr = pdr_in->adr;
4152 pdr_in_end = pdr_in + fh->cpd;
4153 for (; pdr_in < pdr_in_end; pdr_in++)
4154 parse_procedure (pdr_in, cust, pst);
4156 do_cleanups (old_chain);
4161 /* This symbol table contains ordinary ecoff entries. */
4169 cust = new_symtab ("unknown", 0, objfile);
4173 maxlines = 2 * fh->cline;
4174 cust = new_symtab (pst->filename, maxlines, objfile);
4176 /* The proper language was already determined when building
4177 the psymtab, use it. */
4178 COMPUNIT_FILETABS (cust)->language = PST_PRIVATE (pst)->pst_language;
4181 psymtab_language = COMPUNIT_FILETABS (cust)->language;
4183 lines = SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust));
4185 /* Get a new lexical context. */
4187 push_parse_stack ();
4188 top_stack->cur_st = COMPUNIT_FILETABS (cust);
4189 top_stack->cur_block
4190 = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), STATIC_BLOCK);
4191 BLOCK_START (top_stack->cur_block) = pst->textlow;
4192 BLOCK_END (top_stack->cur_block) = 0;
4193 top_stack->blocktype = stFile;
4194 top_stack->cur_type = 0;
4195 top_stack->procadr = 0;
4196 top_stack->numargs = 0;
4197 found_ecoff_debugging_info = 0;
4204 /* Parse local symbols first. */
4205 sym_ptr = ((char *) debug_info->external_sym
4206 + fh->isymBase * external_sym_size);
4207 sym_end = sym_ptr + fh->csym * external_sym_size;
4208 while (sym_ptr < sym_end)
4213 (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
4214 c = parse_symbol (&sh,
4215 debug_info->external_aux + fh->iauxBase,
4216 sym_ptr, fh->fBigendian,
4217 section_offsets, objfile);
4218 sym_ptr += c * external_sym_size;
4221 /* Linenumbers. At the end, check if we can save memory.
4222 parse_lines has to look ahead an arbitrary number of PDR
4223 structures, so we swap them all first. */
4227 struct cleanup *old_chain;
4233 pr_block = XNEWVEC (PDR, fh->cpd);
4235 old_chain = make_cleanup (xfree, pr_block);
4237 pdr_ptr = ((char *) debug_info->external_pdr
4238 + fh->ipdFirst * external_pdr_size);
4239 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
4243 pdr_ptr += external_pdr_size, pdr_in++)
4245 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
4247 /* Determine lowest PDR address, the PDRs are not always
4249 if (pdr_in == pr_block)
4250 lowest_pdr_addr = pdr_in->adr;
4251 else if (pdr_in->adr < lowest_pdr_addr)
4252 lowest_pdr_addr = pdr_in->adr;
4255 parse_lines (fh, pr_block, lines, maxlines,
4256 pst, lowest_pdr_addr);
4257 if (lines->nitems < fh->cline)
4258 lines = shrink_linetable (lines);
4260 /* Fill in procedure info next. */
4262 pdr_in_end = pdr_in + fh->cpd;
4263 for (; pdr_in < pdr_in_end; pdr_in++)
4264 parse_procedure (pdr_in, NULL, pst);
4266 do_cleanups (old_chain);
4270 size = lines->nitems;
4273 SYMTAB_LINETABLE (COMPUNIT_FILETABS (cust))
4274 = ((struct linetable *)
4275 obstack_copy (&mdebugread_objfile->objfile_obstack,
4276 lines, (sizeof (struct linetable)
4277 + size * sizeof (lines->item))));
4280 /* .. and our share of externals.
4281 XXX use the global list to speed up things here. How?
4282 FIXME, Maybe quit once we have found the right number of ext's? */
4283 top_stack->cur_st = COMPUNIT_FILETABS (cust);
4284 top_stack->cur_block
4285 = BLOCKVECTOR_BLOCK (SYMTAB_BLOCKVECTOR (top_stack->cur_st),
4287 top_stack->blocktype = stFile;
4289 ext_ptr = PST_PRIVATE (pst)->extern_tab;
4290 for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
4291 parse_external (ext_ptr, fh->fBigendian,
4292 section_offsets, objfile);
4294 /* If there are undefined symbols, tell the user.
4295 The alpha has an undefined symbol for every symbol that is
4296 from a shared library, so tell the user only if verbose is on. */
4297 if (info_verbose && n_undef_symbols)
4299 printf_filtered (_("File %s contains %d unresolved references:"),
4300 symtab_to_filename_for_display
4301 (COMPUNIT_FILETABS (cust)),
4303 printf_filtered ("\n\t%4d variables\n\t%4d "
4304 "procedures\n\t%4d labels\n",
4305 n_undef_vars, n_undef_procs, n_undef_labels);
4306 n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
4311 sort_blocks (COMPUNIT_FILETABS (cust));
4314 /* Now link the psymtab and the symtab. */
4315 pst->compunit_symtab = cust;
4317 mdebugread_objfile = NULL;
4320 /* Ancillary parsing procedures. */
4322 /* Return 1 if the symbol pointed to by SH has a cross reference
4323 to an opaque aggregate type, else 0. */
4326 has_opaque_xref (FDR *fh, SYMR *sh)
4333 if (sh->index == indexNil)
4336 ax = debug_info->external_aux + fh->iauxBase + sh->index;
4337 (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
4338 if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
4342 (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
4343 if (rn->rfd == 0xfff)
4344 rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
4352 /* Lookup the type at relative index RN. Return it in TPP
4353 if found and in any event come up with its name PNAME.
4354 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4355 Return value says how many aux symbols we ate. */
4358 cross_ref (int fd, union aux_ext *ax, struct type **tpp,
4359 enum type_code type_code,
4360 /* Use to alloc new type if none is found. */
4361 const char **pname, int bigend, const char *sym_name)
4370 struct mdebug_pending *pend;
4374 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
4376 /* Escape index means 'the next one'. */
4377 if (rn->rfd == 0xfff)
4380 rf = AUX_GET_ISYM (bigend, ax + 1);
4387 /* mips cc uses a rf of -1 for opaque struct definitions.
4388 Set TYPE_STUB for these types so that check_typedef will
4389 resolve them if the struct gets defined in another compilation unit. */
4392 *pname = "<undefined>";
4393 *tpp = init_type (mdebugread_objfile, type_code, 0, NULL);
4394 TYPE_STUB (*tpp) = 1;
4398 /* mips cc uses an escaped rn->index of 0 for struct return types
4399 of procedures that were compiled without -g. These will always remain
4401 if (rn->rfd == 0xfff && rn->index == 0)
4403 *pname = "<undefined>";
4407 /* Find the relative file descriptor and the symbol in it. */
4408 fh = get_rfd (fd, rf);
4409 xref_fd = fh - debug_info->fdr;
4411 if (rn->index >= fh->csym)
4413 /* File indirect entry is corrupt. */
4414 *pname = "<illegal>";
4415 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4419 /* If we have processed this symbol then we left a forwarding
4420 pointer to the type in the pending list. If not, we`ll put
4421 it in a list of pending types, to be processed later when
4422 the file will be. In any event, we collect the name for the
4425 esh = ((char *) debug_info->external_sym
4426 + ((fh->isymBase + rn->index)
4427 * debug_swap->external_sym_size));
4428 (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
4430 /* Make sure that this type of cross reference can be handled. */
4431 if ((sh.sc != scInfo
4432 || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
4433 && sh.st != stStruct && sh.st != stUnion
4434 && sh.st != stEnum))
4435 && (sh.st != stBlock || !SC_IS_COMMON (sh.sc)))
4437 /* File indirect entry is corrupt. */
4438 *pname = "<illegal>";
4439 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4443 *pname = debug_info->ss + fh->issBase + sh.iss;
4445 pend = is_pending_symbol (fh, esh);
4450 /* We have not yet seen this type. */
4452 if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
4456 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4458 a) forward declarations of structs/unions/enums which are not
4459 defined in this compilation unit.
4460 For these the type will be void. This is a bad design decision
4461 as cross referencing across compilation units is impossible
4462 due to the missing name.
4463 b) forward declarations of structs/unions/enums/typedefs which
4464 are defined later in this file or in another file in the same
4465 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4466 Simply cross reference those again to get the true type.
4467 The forward references are not entered in the pending list and
4468 in the symbol table. */
4470 (*debug_swap->swap_tir_in) (bigend,
4471 &(debug_info->external_aux
4472 + fh->iauxBase + sh.index)->a_ti,
4474 if (tir.tq0 != tqNil)
4475 complaint (&symfile_complaints,
4476 _("illegal tq0 in forward typedef for %s"), sym_name);
4480 *tpp = init_type (mdebugread_objfile, type_code, 0, NULL);
4481 *pname = "<undefined>";
4488 (debug_info->external_aux
4489 + fh->iauxBase + sh.index + 1),
4490 tpp, type_code, pname,
4491 fh->fBigendian, sym_name);
4495 /* Follow a forward typedef. This might recursively
4496 call cross_ref till we get a non typedef'ed type.
4497 FIXME: This is not correct behaviour, but gdb currently
4498 cannot handle typedefs without type copying. Type
4499 copying is impossible as we might have mutual forward
4500 references between two files and the copied type would not
4501 get filled in when we later parse its definition. */
4502 *tpp = parse_type (xref_fd,
4503 debug_info->external_aux + fh->iauxBase,
4507 debug_info->ss + fh->issBase + sh.iss);
4508 add_pending (fh, esh, *tpp);
4512 complaint (&symfile_complaints,
4513 _("illegal bt %d in forward typedef for %s"), tir.bt,
4515 *tpp = init_type (mdebugread_objfile, type_code, 0, NULL);
4520 else if (sh.st == stTypedef)
4522 /* Parse the type for a normal typedef. This might recursively call
4523 cross_ref till we get a non typedef'ed type.
4524 FIXME: This is not correct behaviour, but gdb currently
4525 cannot handle typedefs without type copying. But type copying is
4526 impossible as we might have mutual forward references between
4527 two files and the copied type would not get filled in when
4528 we later parse its definition. */
4529 *tpp = parse_type (xref_fd,
4530 debug_info->external_aux + fh->iauxBase,
4534 debug_info->ss + fh->issBase + sh.iss);
4538 /* Cross reference to a struct/union/enum which is defined
4539 in another file in the same compilation unit but that file
4540 has not been parsed yet.
4541 Initialize the type only, it will be filled in when
4542 it's definition is parsed. */
4543 *tpp = init_type (mdebugread_objfile, type_code, 0, NULL);
4545 add_pending (fh, esh, *tpp);
4548 /* We used one auxent normally, two if we got a "next one" rf. */
4553 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4554 keeping the symtab sorted. */
4556 static struct symbol *
4557 mylookup_symbol (const char *name, const struct block *block,
4558 domain_enum domain, enum address_class theclass)
4560 struct block_iterator iter;
4565 ALL_BLOCK_SYMBOLS (block, iter, sym)
4567 if (SYMBOL_LINKAGE_NAME (sym)[0] == inc
4568 && SYMBOL_DOMAIN (sym) == domain
4569 && SYMBOL_CLASS (sym) == theclass
4570 && strcmp (SYMBOL_LINKAGE_NAME (sym), name) == 0)
4574 block = BLOCK_SUPERBLOCK (block);
4576 return mylookup_symbol (name, block, domain, theclass);
4581 /* Add a new symbol S to a block B. */
4584 add_symbol (struct symbol *s, struct symtab *symtab, struct block *b)
4586 symbol_set_symtab (s, symtab);
4587 dict_add_symbol (BLOCK_DICT (b), s);
4590 /* Add a new block B to a symtab S. */
4593 add_block (struct block *b, struct symtab *s)
4595 /* Cast away "const", but that's ok because we're building the
4596 symtab and blockvector here. */
4597 struct blockvector *bv = (struct blockvector *) SYMTAB_BLOCKVECTOR (s);
4599 bv = (struct blockvector *) xrealloc ((void *) bv,
4600 (sizeof (struct blockvector)
4601 + BLOCKVECTOR_NBLOCKS (bv)
4602 * sizeof (bv->block)));
4603 if (bv != SYMTAB_BLOCKVECTOR (s))
4604 SYMTAB_BLOCKVECTOR (s) = bv;
4606 BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
4609 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4610 MIPS' linenumber encoding might need more than one byte
4611 to describe it, LAST is used to detect these continuation lines.
4613 Combining lines with the same line number seems like a bad idea.
4614 E.g: There could be a line number entry with the same line number after the
4615 prologue and GDB should not ignore it (this is a better way to find
4616 a prologue than mips_skip_prologue).
4617 But due to the compressed line table format there are line number entries
4618 for the same line which are needed to bridge the gap to the next
4619 line number entry. These entries have a bogus address info with them
4620 and we are unable to tell them from intended duplicate line number
4622 This is another reason why -ggdb debugging format is preferable. */
4625 add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last)
4627 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4628 Change them to something sensible. */
4632 last = -2; /* Make sure we record first line. */
4634 if (last == lineno) /* Skip continuation lines. */
4637 lt->item[lt->nitems].line = lineno;
4638 lt->item[lt->nitems++].pc = adr << 2;
4642 /* Sorting and reordering procedures. */
4644 /* Blocks with a smaller low bound should come first. */
4647 compare_blocks (const void *arg1, const void *arg2)
4650 struct block **b1 = (struct block **) arg1;
4651 struct block **b2 = (struct block **) arg2;
4653 addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
4655 return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
4659 /* Sort the blocks of a symtab S.
4660 Reorder the blocks in the blockvector by code-address,
4661 as required by some MI search routines. */
4664 sort_blocks (struct symtab *s)
4666 /* We have to cast away const here, but this is ok because we're
4667 constructing the blockvector in this code. */
4668 struct blockvector *bv = (struct blockvector *) SYMTAB_BLOCKVECTOR (s);
4670 if (BLOCKVECTOR_NBLOCKS (bv) <= FIRST_LOCAL_BLOCK)
4673 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
4674 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
4675 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
4676 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
4680 * This is very unfortunate: normally all functions are compiled in
4681 * the order they are found, but if the file is compiled -O3 things
4682 * are very different. It would be nice to find a reliable test
4683 * to detect -O3 images in advance.
4685 if (BLOCKVECTOR_NBLOCKS (bv) > FIRST_LOCAL_BLOCK + 1)
4686 qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
4687 BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
4688 sizeof (struct block *),
4693 int i, j = BLOCKVECTOR_NBLOCKS (bv);
4695 for (i = FIRST_LOCAL_BLOCK; i < j; i++)
4696 if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
4697 high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
4698 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
4701 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
4702 BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
4704 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4705 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4706 BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4707 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4711 /* Constructor/restructor/destructor procedures. */
4713 /* Allocate a new symtab for NAME. Needs an estimate of how many
4714 linenumbers MAXLINES we'll put in it. */
4716 static struct compunit_symtab *
4717 new_symtab (const char *name, int maxlines, struct objfile *objfile)
4719 struct compunit_symtab *cust = allocate_compunit_symtab (objfile, name);
4720 struct symtab *symtab;
4721 struct blockvector *bv;
4723 add_compunit_symtab_to_objfile (cust);
4724 symtab = allocate_symtab (cust, name);
4726 SYMTAB_LINETABLE (symtab) = new_linetable (maxlines);
4728 /* All symtabs must have at least two blocks. */
4730 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK) = new_block (NON_FUNCTION_BLOCK);
4731 BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK) = new_block (NON_FUNCTION_BLOCK);
4732 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4733 BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
4734 COMPUNIT_BLOCKVECTOR (cust) = bv;
4736 COMPUNIT_DEBUGFORMAT (cust) = "ECOFF";
4740 /* Allocate a new partial_symtab NAME. */
4742 static struct partial_symtab *
4743 new_psymtab (const char *name, struct objfile *objfile)
4745 struct partial_symtab *psymtab;
4747 psymtab = allocate_psymtab (name, objfile);
4749 /* Keep a backpointer to the file's symbols. */
4751 psymtab->read_symtab_private = obstack_alloc (&objfile->objfile_obstack,
4752 sizeof (struct symloc));
4753 memset (psymtab->read_symtab_private, 0, sizeof (struct symloc));
4754 CUR_BFD (psymtab) = cur_bfd;
4755 DEBUG_SWAP (psymtab) = debug_swap;
4756 DEBUG_INFO (psymtab) = debug_info;
4757 PENDING_LIST (psymtab) = pending_list;
4759 /* The way to turn this into a symtab is to call... */
4760 psymtab->read_symtab = mdebug_read_symtab;
4765 /* Allocate a linetable array of the given SIZE. Since the struct
4766 already includes one item, we subtract one when calculating the
4767 proper size to allocate. */
4769 static struct linetable *
4770 new_linetable (int size)
4772 struct linetable *l;
4776 size = size * sizeof (l->item) + sizeof (struct linetable);
4777 l = (struct linetable *) xmalloc (size);
4782 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4783 I am not so sure about the 3.4 ones.
4785 Since the struct linetable already includes one item, we subtract one when
4786 calculating the proper size to allocate. */
4788 static struct linetable *
4789 shrink_linetable (struct linetable *lt)
4791 return (struct linetable *) xrealloc ((void *) lt,
4792 (sizeof (struct linetable)
4794 * sizeof (lt->item))));
4797 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4799 static struct blockvector *
4800 new_bvect (int nblocks)
4802 struct blockvector *bv;
4805 size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
4806 bv = (struct blockvector *) xzalloc (size);
4808 BLOCKVECTOR_NBLOCKS (bv) = nblocks;
4813 /* Allocate and zero a new block, and set its BLOCK_DICT. If function
4814 is non-zero, assume the block is associated to a function, and make
4815 sure that the symbols are stored linearly; otherwise, store them
4818 static struct block *
4819 new_block (enum block_type type)
4821 /* FIXME: carlton/2003-09-11: This should use allocate_block to
4822 allocate the block. Which, in turn, suggests that the block
4823 should be allocated on an obstack. */
4824 struct block *retval = XCNEW (struct block);
4826 if (type == FUNCTION_BLOCK)
4827 BLOCK_DICT (retval) = dict_create_linear_expandable ();
4829 BLOCK_DICT (retval) = dict_create_hashed_expandable ();
4834 /* Create a new symbol with printname NAME. */
4836 static struct symbol *
4837 new_symbol (const char *name)
4839 struct symbol *s = allocate_symbol (mdebugread_objfile);
4841 SYMBOL_SET_LANGUAGE (s, psymtab_language,
4842 &mdebugread_objfile->objfile_obstack);
4843 SYMBOL_SET_NAMES (s, name, strlen (name), 1, mdebugread_objfile);
4847 /* Create a new type with printname NAME. */
4849 static struct type *
4850 new_type (char *name)
4854 t = alloc_type (mdebugread_objfile);
4855 TYPE_NAME (t) = name;
4856 INIT_CPLUS_SPECIFIC (t);
4860 /* Read ECOFF debugging information from a BFD section. This is
4861 called from elfread.c. It parses the section into a
4862 ecoff_debug_info struct, and then lets the rest of the file handle
4866 elfmdebug_build_psymtabs (struct objfile *objfile,
4867 const struct ecoff_debug_swap *swap, asection *sec)
4869 bfd *abfd = objfile->obfd;
4870 struct ecoff_debug_info *info;
4872 /* FIXME: It's not clear whether we should be getting minimal symbol
4873 information from .mdebug in an ELF file, or whether we will.
4874 Re-initialize the minimal symbol reader in case we do. */
4876 minimal_symbol_reader reader (objfile);
4878 info = ((struct ecoff_debug_info *)
4879 obstack_alloc (&objfile->objfile_obstack,
4880 sizeof (struct ecoff_debug_info)));
4882 if (!(*swap->read_debug_info) (abfd, sec, info))
4883 error (_("Error reading ECOFF debugging information: %s"),
4884 bfd_errmsg (bfd_get_error ()));
4886 mdebug_build_psymtabs (reader, objfile, swap, info);
4892 _initialize_mdebugread (void)
4894 basic_type_data = register_objfile_data ();
4896 mdebug_register_index
4897 = register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs);
4898 mdebug_regparm_index
4899 = register_symbol_register_impl (LOC_REGPARM_ADDR, &mdebug_register_funcs);