1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002
4 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 2 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, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
26 /* This module provides the function mdebug_build_psymtabs. It reads
27 ECOFF debugging information into partial symbol tables. The
28 debugging information is read from two structures. A struct
29 ecoff_debug_swap includes the sizes of each ECOFF structure and
30 swapping routines; these are fixed for a particular target. A
31 struct ecoff_debug_info points to the debugging information for a
32 particular object file.
34 ECOFF symbol tables are mostly written in the byte order of the
35 target machine. However, one section of the table (the auxiliary
36 symbol information) is written in the host byte order. There is a
37 bit in the other symbol info which describes which host byte order
38 was used. ECOFF thereby takes the trophy from Intel `b.out' for
39 the most brain-dead adaptation of a file format to byte order.
41 This module can read all four of the known byte-order combinations,
42 on any type of host. */
50 #include "gdb_obstack.h"
52 #include "stabsread.h"
53 #include "complaints.h"
55 #include "gdb_assert.h"
57 /* These are needed if the tm.h file does not contain the necessary
58 mips specific definitions. */
60 #ifndef MIPS_EFI_SYMBOL_NAME
61 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
62 extern void ecoff_relocate_efi (struct symbol *, CORE_ADDR);
64 #include "coff/symconst.h"
65 typedef struct mips_extra_func_info
70 *mips_extra_func_info_t;
77 #include <sys/types.h>
81 #include "gdb_string.h"
85 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
87 #include "libaout.h" /* Private BFD a.out information. */
88 #include "aout/aout64.h"
89 #include "aout/stab_gnu.h" /* STABS information */
91 #include "expression.h"
92 #include "language.h" /* For local_hex_string() */
94 extern void _initialize_mdebugread (void);
96 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
97 We use this define in order to know whether we should override a
98 symbol's ECOFF section with its ELF section. This is necessary in
99 case the symbol's ELF section could not be represented in ECOFF. */
100 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
101 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
104 /* We put a pointer to this structure in the read_symtab_private field
109 /* Index of the FDR that this psymtab represents. */
111 /* The BFD that the psymtab was created from. */
113 const struct ecoff_debug_swap *debug_swap;
114 struct ecoff_debug_info *debug_info;
115 struct mdebug_pending **pending_list;
116 /* Pointer to external symbols for this file. */
118 /* Size of extern_tab. */
120 enum language pst_language;
123 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
124 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
125 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
126 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
127 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
128 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
130 #define SC_IS_TEXT(sc) ((sc) == scText \
131 || (sc) == scRConst \
134 #define SC_IS_DATA(sc) ((sc) == scData \
139 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
140 #define SC_IS_BSS(sc) ((sc) == scBss)
141 #define SC_IS_SBSS(sc) ((sc) == scSBss)
142 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
144 /* Various complaints about symbol reading that don't abort the process */
146 index_complaint (const char *arg1)
148 complaint (&symfile_complaints, "bad aux index at symbol %s", arg1);
152 unknown_ext_complaint (const char *arg1)
154 complaint (&symfile_complaints, "unknown external symbol %s", arg1);
158 basic_type_complaint (int arg1, const char *arg2)
160 complaint (&symfile_complaints, "cannot map ECOFF basic type 0x%x for %s",
165 bad_tag_guess_complaint (const char *arg1)
167 complaint (&symfile_complaints, "guessed tag type of %s incorrectly", arg1);
171 bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3)
173 complaint (&symfile_complaints, "bad rfd entry for %s: file %d, index %d",
178 unexpected_type_code_complaint (const char *arg1)
180 complaint (&symfile_complaints, "unexpected type code for %s", arg1);
183 /* Macros and extra defs */
185 /* Puns: hard to find whether -g was used and how */
187 #define MIN_GLEVEL GLEVEL_0
188 #define compare_glevel(a,b) \
189 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
190 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
192 /* Things that really are local to this module */
194 /* Remember what we deduced to be the source language of this psymtab. */
196 static enum language psymtab_language = language_unknown;
202 /* How to parse debugging information for CUR_BFD. */
204 static const struct ecoff_debug_swap *debug_swap;
206 /* Pointers to debugging information for CUR_BFD. */
208 static struct ecoff_debug_info *debug_info;
210 /* Pointer to current file decriptor record, and its index */
215 /* Index of current symbol */
219 /* Note how much "debuggable" this image is. We would like
220 to see at least one FDR with full symbols */
222 static int max_gdbinfo;
223 static int max_glevel;
225 /* When examining .o files, report on undefined symbols */
227 static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
229 /* Pseudo symbol to use when putting stabs into the symbol table. */
231 static char stabs_symbol[] = STABS_SYMBOL;
233 /* Types corresponding to mdebug format bt* basic types. */
235 static struct type *mdebug_type_void;
236 static struct type *mdebug_type_char;
237 static struct type *mdebug_type_short;
238 static struct type *mdebug_type_int_32;
239 #define mdebug_type_int mdebug_type_int_32
240 static struct type *mdebug_type_int_64;
241 static struct type *mdebug_type_long_32;
242 static struct type *mdebug_type_long_64;
243 static struct type *mdebug_type_long_long_64;
244 static struct type *mdebug_type_unsigned_char;
245 static struct type *mdebug_type_unsigned_short;
246 static struct type *mdebug_type_unsigned_int_32;
247 static struct type *mdebug_type_unsigned_int_64;
248 static struct type *mdebug_type_unsigned_long_32;
249 static struct type *mdebug_type_unsigned_long_64;
250 static struct type *mdebug_type_unsigned_long_long_64;
251 static struct type *mdebug_type_adr_32;
252 static struct type *mdebug_type_adr_64;
253 static struct type *mdebug_type_float;
254 static struct type *mdebug_type_double;
255 static struct type *mdebug_type_complex;
256 static struct type *mdebug_type_double_complex;
257 static struct type *mdebug_type_fixed_dec;
258 static struct type *mdebug_type_float_dec;
259 static struct type *mdebug_type_string;
261 /* Types for symbols from files compiled without debugging info. */
263 static struct type *nodebug_func_symbol_type;
264 static struct type *nodebug_var_symbol_type;
266 /* Nonzero if we have seen ecoff debugging info for a file. */
268 static int found_ecoff_debugging_info;
270 /* Forward declarations */
272 static int upgrade_type (int, struct type **, int, union aux_ext *,
275 static void parse_partial_symbols (struct objfile *);
277 static int has_opaque_xref (FDR *, SYMR *);
279 static int cross_ref (int, union aux_ext *, struct type **, enum type_code,
280 char **, int, char *);
282 static struct symbol *new_symbol (char *);
284 static struct type *new_type (char *);
286 static struct block *new_block (int);
288 static struct symtab *new_symtab (char *, int, int, struct objfile *);
290 static struct linetable *new_linetable (int);
292 static struct blockvector *new_bvect (int);
294 static struct type *parse_type (int, union aux_ext *, unsigned int, int *,
297 static struct symbol *mylookup_symbol (char *, struct block *, namespace_enum,
300 static struct block *shrink_block (struct block *, struct symtab *);
302 static void sort_blocks (struct symtab *);
304 static struct partial_symtab *new_psymtab (char *, struct objfile *);
306 static void psymtab_to_symtab_1 (struct partial_symtab *, char *);
308 static void add_block (struct block *, struct symtab *);
310 static void add_symbol (struct symbol *, struct block *);
312 static int add_line (struct linetable *, int, CORE_ADDR, int);
314 static struct linetable *shrink_linetable (struct linetable *);
316 static void handle_psymbol_enumerators (struct objfile *, FDR *, int,
319 static char *mdebug_next_symbol_text (struct objfile *);
321 /* Address bounds for the signal trampoline in inferior, if any */
323 CORE_ADDR sigtramp_address, sigtramp_end;
325 /* Allocate zeroed memory */
328 xzalloc (unsigned int size)
330 void *p = xmalloc (size);
336 /* Exported procedure: Builds a symtab from the PST partial one.
337 Restores the environment in effect when PST was created, delegates
338 most of the work to an ancillary procedure, and sorts
339 and reorders the symtab list at the end */
342 mdebug_psymtab_to_symtab (struct partial_symtab *pst)
350 printf_filtered ("Reading in symbols for %s...", pst->filename);
351 gdb_flush (gdb_stdout);
354 next_symbol_text_func = mdebug_next_symbol_text;
356 psymtab_to_symtab_1 (pst, pst->filename);
358 /* Match with global symbols. This only needs to be done once,
359 after all of the symtabs and dependencies have been read in. */
360 scan_file_globals (pst->objfile);
363 printf_filtered ("done.\n");
366 /* File-level interface functions */
368 /* Find a file descriptor given its index RF relative to a file CF */
371 get_rfd (int cf, int rf)
377 fdrs = debug_info->fdr;
379 /* Object files do not have the RFD table, all refs are absolute */
382 (*debug_swap->swap_rfd_in) (cur_bfd,
383 ((char *) debug_info->external_rfd
385 * debug_swap->external_rfd_size)),
390 /* Return a safer print NAME for a file descriptor */
396 return "<stripped file>";
399 return debug_info->ss + f->issBase + f->rss;
403 /* Read in and parse the symtab of the file OBJFILE. Symbols from
404 different sections are relocated via the SECTION_OFFSETS. */
407 mdebug_build_psymtabs (struct objfile *objfile,
408 const struct ecoff_debug_swap *swap,
409 struct ecoff_debug_info *info)
411 cur_bfd = objfile->obfd;
415 stabsread_new_init ();
416 buildsym_new_init ();
417 free_header_files ();
418 init_header_files ();
420 /* Make sure all the FDR information is swapped in. */
421 if (info->fdr == (FDR *) NULL)
427 info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack,
428 (info->symbolic_header.ifdMax
430 fdr_src = info->external_fdr;
432 + info->symbolic_header.ifdMax * swap->external_fdr_size);
434 for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)
435 (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr);
438 parse_partial_symbols (objfile);
441 /* Check to make sure file was compiled with -g. If not, warn the
442 user of this limitation. */
443 if (compare_glevel (max_glevel, GLEVEL_2) < 0)
445 if (max_gdbinfo == 0)
446 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
448 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
449 gdb_flush (gdb_stdout);
454 /* Local utilities */
456 /* Map of FDR indexes to partial symtabs */
460 struct partial_symtab *pst; /* the psymtab proper */
461 long n_globals; /* exported globals (external symbols) */
462 long globals_offset; /* cumulative */
466 /* Utility stack, used to nest procedures and blocks properly.
467 It is a doubly linked list, to avoid too many alloc/free.
468 Since we might need it quite a few times it is NOT deallocated
471 static struct parse_stack
473 struct parse_stack *next, *prev;
474 struct symtab *cur_st; /* Current symtab. */
475 struct block *cur_block; /* Block in it. */
477 /* What are we parsing. stFile, or stBlock are for files and
478 blocks. stProc or stStaticProc means we have seen the start of a
479 procedure, but not the start of the block within in. When we see
480 the start of that block, we change it to stNil, without pushing a
481 new block, i.e. stNil means both a procedure and a block. */
485 int maxsyms; /* Max symbols in this block. */
486 struct type *cur_type; /* Type we parse fields for. */
487 int cur_field; /* Field number in cur_type. */
488 CORE_ADDR procadr; /* Start addres of this procedure */
489 int numargs; /* Its argument count */
492 *top_stack; /* Top stack ptr */
495 /* Enter a new lexical context */
498 push_parse_stack (void)
500 struct parse_stack *new;
502 /* Reuse frames if possible */
503 if (top_stack && top_stack->prev)
504 new = top_stack->prev;
506 new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));
507 /* Initialize new frame with previous content */
510 register struct parse_stack *prev = new->prev;
513 top_stack->prev = new;
515 new->next = top_stack;
520 /* Exit a lexical context */
523 pop_parse_stack (void)
528 top_stack = top_stack->next;
532 /* Cross-references might be to things we haven't looked at
533 yet, e.g. type references. To avoid too many type
534 duplications we keep a quick fixup table, an array
535 of lists of references indexed by file descriptor */
537 struct mdebug_pending
539 struct mdebug_pending *next; /* link */
540 char *s; /* the unswapped symbol */
541 struct type *t; /* its partial type descriptor */
545 /* The pending information is kept for an entire object file, and used
546 to be in the sym_private field. I took it out when I split
547 mdebugread from mipsread, because this might not be the only type
548 of symbols read from an object file. Instead, we allocate the
549 pending information table when we create the partial symbols, and
550 we store a pointer to the single table in each psymtab. */
552 static struct mdebug_pending **pending_list;
554 /* Check whether we already saw symbol SH in file FH */
556 static struct mdebug_pending *
557 is_pending_symbol (FDR *fh, char *sh)
559 int f_idx = fh - debug_info->fdr;
560 register struct mdebug_pending *p;
562 /* Linear search is ok, list is typically no more than 10 deep */
563 for (p = pending_list[f_idx]; p; p = p->next)
569 /* Add a new symbol SH of type T */
572 add_pending (FDR *fh, char *sh, struct type *t)
574 int f_idx = fh - debug_info->fdr;
575 struct mdebug_pending *p = is_pending_symbol (fh, sh);
577 /* Make sure we do not make duplicates */
580 p = ((struct mdebug_pending *)
581 obstack_alloc (¤t_objfile->psymbol_obstack,
582 sizeof (struct mdebug_pending)));
585 p->next = pending_list[f_idx];
586 pending_list[f_idx] = p;
591 /* Parsing Routines proper. */
593 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
594 For blocks, procedures and types we open a new lexical context.
595 This is basically just a big switch on the symbol's type. Argument
596 AX is the base pointer of aux symbols for this file (fh->iauxBase).
597 EXT_SH points to the unswapped symbol, which is needed for struct,
598 union, etc., types; it is NULL for an EXTR. BIGEND says whether
599 aux symbols are big-endian or little-endian. Return count of
600 SYMR's handled (normally one). */
603 parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend,
604 struct section_offsets *section_offsets, struct objfile *objfile)
606 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
607 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
611 struct mdebug_pending *pend;
615 enum address_class class;
617 long svalue = sh->value;
620 if (ext_sh == (char *) NULL)
621 name = debug_info->ssext + sh->iss;
623 name = debug_info->ss + cur_fdr->issBase + sh->iss;
629 /* Do not relocate relative values.
630 The value of a stEnd symbol is the displacement from the
631 corresponding start symbol value.
632 The value of a stBlock symbol is the displacement from the
633 procedure address. */
634 if (sh->st != stEnd && sh->st != stBlock)
635 sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
642 sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile));
646 sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile));
655 case stGlobal: /* external symbol, goes into global block */
657 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
659 s = new_symbol (name);
660 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
663 case stStatic: /* static data, goes into current block. */
665 b = top_stack->cur_block;
666 s = new_symbol (name);
667 if (SC_IS_COMMON (sh->sc))
669 /* It is a FORTRAN common block. At least for SGI Fortran the
670 address is not in the symbol; we need to fix it later in
671 scan_file_globals. */
672 int bucket = hashname (SYMBOL_NAME (s));
673 SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
674 global_sym_chain[bucket] = s;
677 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
680 case stLocal: /* local variable, goes into current block */
681 if (sh->sc == scRegister)
683 class = LOC_REGISTER;
684 svalue = ECOFF_REG_TO_REGNUM (svalue);
688 b = top_stack->cur_block;
689 s = new_symbol (name);
690 SYMBOL_VALUE (s) = svalue;
692 data: /* Common code for symbols describing data */
693 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
694 SYMBOL_CLASS (s) = class;
697 /* Type could be missing if file is compiled without debugging info. */
698 if (SC_IS_UNDEF (sh->sc)
699 || sh->sc == scNil || sh->index == indexNil)
700 SYMBOL_TYPE (s) = nodebug_var_symbol_type;
702 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
703 /* Value of a data symbol is its memory address */
706 case stParam: /* arg to procedure, goes into current block */
708 found_ecoff_debugging_info = 1;
709 top_stack->numargs++;
711 /* Special GNU C++ name. */
712 if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0)
713 name = "this"; /* FIXME, not alloc'd in obstack */
714 s = new_symbol (name);
716 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
720 /* Pass by value in register. */
721 SYMBOL_CLASS (s) = LOC_REGPARM;
722 svalue = ECOFF_REG_TO_REGNUM (svalue);
725 /* Pass by reference on stack. */
726 SYMBOL_CLASS (s) = LOC_REF_ARG;
729 /* Pass by reference in register. */
730 SYMBOL_CLASS (s) = LOC_REGPARM_ADDR;
731 svalue = ECOFF_REG_TO_REGNUM (svalue);
734 /* Pass by value on stack. */
735 SYMBOL_CLASS (s) = LOC_ARG;
738 SYMBOL_VALUE (s) = svalue;
739 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
740 add_symbol (s, top_stack->cur_block);
743 case stLabel: /* label, goes into current block */
744 s = new_symbol (name);
745 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */
746 SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */
747 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
748 SYMBOL_TYPE (s) = mdebug_type_int;
749 add_symbol (s, top_stack->cur_block);
752 case stProc: /* Procedure, usually goes into global block */
753 case stStaticProc: /* Static procedure, goes into current block */
754 s = new_symbol (name);
755 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
756 SYMBOL_CLASS (s) = LOC_BLOCK;
757 /* Type of the return value */
758 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
762 t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
763 if (STREQ (name, "malloc") && TYPE_CODE (t) == TYPE_CODE_VOID)
765 /* I don't know why, but, at least under Alpha GNU/Linux,
766 when linking against a malloc without debugging
767 symbols, its read as a function returning void---this
768 is bad because it means we cannot call functions with
769 string arguments interactively; i.e., "call
770 printf("howdy\n")" would fail with the error message
771 "program has no memory available". To avoid this, we
772 patch up the type and make it void*
773 instead. (davidm@azstarnet.com)
775 t = make_pointer_type (t, NULL);
778 b = top_stack->cur_block;
779 if (sh->st == stProc)
781 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
782 /* The next test should normally be true, but provides a
783 hook for nested functions (which we don't want to make
785 if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
786 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
787 /* Irix 5 sometimes has duplicate names for the same
788 function. We want to add such names up at the global
789 level, not as a nested function. */
790 else if (sh->value == top_stack->procadr)
791 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
795 /* Make a type for the procedure itself */
796 SYMBOL_TYPE (s) = lookup_function_type (t);
798 /* Create and enter a new lexical context */
799 b = new_block (top_stack->maxsyms);
800 SYMBOL_BLOCK_VALUE (s) = b;
801 BLOCK_FUNCTION (b) = s;
802 BLOCK_START (b) = BLOCK_END (b) = sh->value;
803 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
804 add_block (b, top_stack->cur_st);
806 /* Not if we only have partial info */
807 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
811 top_stack->cur_block = b;
812 top_stack->blocktype = sh->st;
813 top_stack->cur_type = SYMBOL_TYPE (s);
814 top_stack->cur_field = -1;
815 top_stack->procadr = sh->value;
816 top_stack->numargs = 0;
819 /* Beginning of code for structure, union, and enum definitions.
820 They all share a common set of local variables, defined here. */
822 enum type_code type_code;
828 case stStruct: /* Start a block defining a struct type */
829 type_code = TYPE_CODE_STRUCT;
830 goto structured_common;
832 case stUnion: /* Start a block defining a union type */
833 type_code = TYPE_CODE_UNION;
834 goto structured_common;
836 case stEnum: /* Start a block defining an enum type */
837 type_code = TYPE_CODE_ENUM;
838 goto structured_common;
840 case stBlock: /* Either a lexical block, or some type */
841 if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc))
842 goto case_stBlock_code; /* Lexical block */
844 type_code = TYPE_CODE_UNDEF; /* We have a type. */
846 /* Common code for handling struct, union, enum, and/or as-yet-
847 unknown-type blocks of info about structured data. `type_code'
848 has been set to the proper TYPE_CODE, if we know it. */
850 found_ecoff_debugging_info = 1;
852 top_stack->blocktype = stBlock;
854 /* First count the number of fields and the highest value. */
857 for (ext_tsym = ext_sh + external_sym_size;
859 ext_tsym += external_sym_size)
863 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
868 /* C++ encodes class types as structures where there the
869 methods are encoded as stProc. The scope of stProc
870 symbols also ends with stEnd, thus creating a risk of
871 taking the wrong stEnd symbol record as the end of
872 the current struct, which would cause GDB to undercount
873 the real number of fields in this struct. To make sure
874 we really reached the right stEnd symbol record, we
875 check the associated name, and match it against the
876 struct name. Since method names are mangled while
877 the class name is not, there is no risk of having a
878 method whose name is identical to the class name
879 (in particular constructor method names are different
880 from the class name). There is therefore no risk that
881 this check stops the count on the StEnd of a method. */
882 if (strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss,
888 if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
890 /* If the type of the member is Nil (or Void),
891 without qualifiers, assume the tag is an
893 Alpha cc -migrate enums are recognized by a zero
894 index and a zero symbol value.
895 DU 4.0 cc enums are recognized by a member type of
896 btEnum without qualifiers and a zero symbol value. */
897 if (tsym.index == indexNil
898 || (tsym.index == 0 && sh->value == 0))
899 type_code = TYPE_CODE_ENUM;
902 (*debug_swap->swap_tir_in) (bigend,
903 &ax[tsym.index].a_ti,
905 if ((tir.bt == btNil || tir.bt == btVoid
906 || (tir.bt == btEnum && sh->value == 0))
908 type_code = TYPE_CODE_ENUM;
912 if (tsym.value > max_value)
913 max_value = tsym.value;
922 /* This is a no-op; is it trying to tell us something
923 we should be checking? */
924 if (tsym.sc == scVariant); /*UNIMPLEMENTED */
928 /* This is something like a struct within a
929 struct. Skip over the fields of the inner
930 struct. The -1 is because the for loop will
931 increment ext_tsym. */
932 ext_tsym = ((char *) debug_info->external_sym
933 + ((cur_fdr->isymBase + tsym.index - 1)
934 * external_sym_size));
940 /* mips cc puts out a typedef for struct x if it is not yet
941 defined when it encounters
942 struct y { struct x *xp; };
947 /* Irix5 cc puts out a stIndirect for struct x if it is not
948 yet defined when it encounters
949 struct y { struct x *xp; };
954 complaint (&symfile_complaints,
955 "declaration block contains unhandled symbol type %d",
961 /* In an stBlock, there is no way to distinguish structs,
962 unions, and enums at this point. This is a bug in the
963 original design (that has been fixed with the recent
964 addition of the stStruct, stUnion, and stEnum symbol
965 types.) The way you can tell is if/when you see a variable
966 or field of that type. In that case the variable's type
967 (in the AUX table) says if the type is struct, union, or
968 enum, and points back to the stBlock here. So you can
969 patch the tag kind up later - but only if there actually is
970 a variable or field of that type.
972 So until we know for sure, we will guess at this point.
974 If the first member has index==indexNil or a void type,
975 assume we have an enumeration.
976 Otherwise, if there is more than one member, and all
977 the members have offset 0, assume we have a union.
978 Otherwise, assume we have a struct.
980 The heuristic could guess wrong in the case of of an
981 enumeration with no members or a union with one (or zero)
982 members, or when all except the last field of a struct have
983 width zero. These are uncommon and/or illegal situations,
984 and in any case guessing wrong probably doesn't matter
987 But if we later do find out we were wrong, we fixup the tag
988 kind. Members of an enumeration must be handled
989 differently from struct/union fields, and that is harder to
990 patch up, but luckily we shouldn't need to. (If there are
991 any enumeration members, we can tell for sure it's an enum
994 if (type_code == TYPE_CODE_UNDEF)
996 if (nfields > 1 && max_value == 0)
997 type_code = TYPE_CODE_UNION;
999 type_code = TYPE_CODE_STRUCT;
1002 /* Create a new type or use the pending type. */
1003 pend = is_pending_symbol (cur_fdr, ext_sh);
1004 if (pend == (struct mdebug_pending *) NULL)
1006 t = new_type (NULL);
1007 add_pending (cur_fdr, ext_sh, t);
1012 /* Do not set the tag name if it is a compiler generated tag name
1013 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1014 Alpha cc puts out an sh->iss of zero for those. */
1015 if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
1016 TYPE_TAG_NAME (t) = NULL;
1018 TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack,
1021 TYPE_CODE (t) = type_code;
1022 TYPE_LENGTH (t) = sh->value;
1023 TYPE_NFIELDS (t) = nfields;
1024 TYPE_FIELDS (t) = f = ((struct field *)
1026 nfields * sizeof (struct field)));
1028 if (type_code == TYPE_CODE_ENUM)
1030 int unsigned_enum = 1;
1032 /* This is a non-empty enum. */
1034 /* DEC c89 has the number of enumerators in the sh.value field,
1035 not the type length, so we have to compensate for that
1036 incompatibility quirk.
1037 This might do the wrong thing for an enum with one or two
1038 enumerators and gcc -gcoff -fshort-enums, but these cases
1039 are hopefully rare enough.
1040 Alpha cc -migrate has a sh.value field of zero, we adjust
1042 if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)
1043 || TYPE_LENGTH (t) == 0)
1044 TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT;
1045 for (ext_tsym = ext_sh + external_sym_size;
1047 ext_tsym += external_sym_size)
1050 struct symbol *enum_sym;
1052 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
1054 if (tsym.st != stMember)
1057 FIELD_BITPOS (*f) = tsym.value;
1058 FIELD_TYPE (*f) = t;
1059 FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss;
1060 FIELD_BITSIZE (*f) = 0;
1061 FIELD_STATIC_KIND (*f) = 0;
1063 enum_sym = ((struct symbol *)
1064 obstack_alloc (¤t_objfile->symbol_obstack,
1065 sizeof (struct symbol)));
1066 memset (enum_sym, 0, sizeof (struct symbol));
1067 SYMBOL_NAME (enum_sym) =
1068 obsavestring (f->name, strlen (f->name),
1069 ¤t_objfile->symbol_obstack);
1070 SYMBOL_CLASS (enum_sym) = LOC_CONST;
1071 SYMBOL_TYPE (enum_sym) = t;
1072 SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
1073 SYMBOL_VALUE (enum_sym) = tsym.value;
1074 if (SYMBOL_VALUE (enum_sym) < 0)
1076 add_symbol (enum_sym, top_stack->cur_block);
1078 /* Skip the stMembers that we've handled. */
1083 TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED;
1085 /* make this the current type */
1086 top_stack->cur_type = t;
1087 top_stack->cur_field = 0;
1089 /* Do not create a symbol for alpha cc unnamed structs. */
1093 /* gcc puts out an empty struct for an opaque struct definitions,
1094 do not create a symbol for it either. */
1095 if (TYPE_NFIELDS (t) == 0)
1097 TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
1101 s = new_symbol (name);
1102 SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
1103 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1104 SYMBOL_VALUE (s) = 0;
1105 SYMBOL_TYPE (s) = t;
1106 add_symbol (s, top_stack->cur_block);
1109 /* End of local variables shared by struct, union, enum, and
1110 block (as yet unknown struct/union/enum) processing. */
1114 found_ecoff_debugging_info = 1;
1115 /* beginnning of (code) block. Value of symbol
1116 is the displacement from procedure start */
1117 push_parse_stack ();
1119 /* Do not start a new block if this is the outermost block of a
1120 procedure. This allows the LOC_BLOCK symbol to point to the
1121 block with the local variables, so funcname::var works. */
1122 if (top_stack->blocktype == stProc
1123 || top_stack->blocktype == stStaticProc)
1125 top_stack->blocktype = stNil;
1129 top_stack->blocktype = stBlock;
1130 b = new_block (top_stack->maxsyms);
1131 BLOCK_START (b) = sh->value + top_stack->procadr;
1132 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1133 top_stack->cur_block = b;
1134 add_block (b, top_stack->cur_st);
1137 case stEnd: /* end (of anything) */
1138 if (sh->sc == scInfo || SC_IS_COMMON (sh->sc))
1140 /* Finished with type */
1141 top_stack->cur_type = 0;
1143 else if (sh->sc == scText &&
1144 (top_stack->blocktype == stProc ||
1145 top_stack->blocktype == stStaticProc))
1147 /* Finished with procedure */
1148 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
1149 struct mips_extra_func_info *e;
1151 struct type *ftype = top_stack->cur_type;
1154 BLOCK_END (top_stack->cur_block) += sh->value; /* size */
1156 /* Make up special symbol to contain procedure specific info */
1157 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
1158 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
1159 SYMBOL_CLASS (s) = LOC_CONST;
1160 SYMBOL_TYPE (s) = mdebug_type_void;
1161 e = ((struct mips_extra_func_info *)
1162 obstack_alloc (¤t_objfile->symbol_obstack,
1163 sizeof (struct mips_extra_func_info)));
1164 memset (e, 0, sizeof (struct mips_extra_func_info));
1165 SYMBOL_VALUE (s) = (long) e;
1166 e->numargs = top_stack->numargs;
1167 e->pdr.framereg = -1;
1168 add_symbol (s, top_stack->cur_block);
1170 /* Reallocate symbols, saving memory */
1171 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
1173 /* f77 emits proc-level with address bounds==[0,0],
1174 So look for such child blocks, and patch them. */
1175 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
1177 struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
1178 if (BLOCK_SUPERBLOCK (b_bad) == b
1179 && BLOCK_START (b_bad) == top_stack->procadr
1180 && BLOCK_END (b_bad) == top_stack->procadr)
1182 BLOCK_START (b_bad) = BLOCK_START (b);
1183 BLOCK_END (b_bad) = BLOCK_END (b);
1187 if (TYPE_NFIELDS (ftype) <= 0)
1189 /* No parameter type information is recorded with the function's
1190 type. Set that from the type of the parameter symbols. */
1191 int nparams = top_stack->numargs;
1197 TYPE_NFIELDS (ftype) = nparams;
1198 TYPE_FIELDS (ftype) = (struct field *)
1199 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
1201 for (i = iparams = 0; iparams < nparams; i++)
1203 sym = BLOCK_SYM (b, i);
1204 switch (SYMBOL_CLASS (sym))
1209 case LOC_REGPARM_ADDR:
1210 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
1211 TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
1221 else if (sh->sc == scText && top_stack->blocktype == stBlock)
1223 /* End of (code) block. The value of the symbol is the
1224 displacement from the procedure`s start address of the
1225 end of this block. */
1226 BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
1227 shrink_block (top_stack->cur_block, top_stack->cur_st);
1229 else if (sh->sc == scText && top_stack->blocktype == stNil)
1231 /* End of outermost block. Pop parse stack and ignore. The
1232 following stEnd of stProc will take care of the block. */
1235 else if (sh->sc == scText && top_stack->blocktype == stFile)
1237 /* End of file. Pop parse stack and ignore. Higher
1238 level code deals with this. */
1242 complaint (&symfile_complaints,
1243 "stEnd with storage class %d not handled", sh->sc);
1245 pop_parse_stack (); /* restore previous lexical context */
1248 case stMember: /* member of struct or union */
1249 f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
1250 FIELD_NAME (*f) = name;
1251 FIELD_BITPOS (*f) = sh->value;
1253 FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name);
1254 FIELD_BITSIZE (*f) = bitsize;
1255 FIELD_STATIC_KIND (*f) = 0;
1258 case stIndirect: /* forward declaration on Irix5 */
1259 /* Forward declarations from Irix5 cc are handled by cross_ref,
1263 case stTypedef: /* type definition */
1264 found_ecoff_debugging_info = 1;
1266 /* Typedefs for forward declarations and opaque structs from alpha cc
1267 are handled by cross_ref, skip them. */
1271 /* Parse the type or use the pending type. */
1272 pend = is_pending_symbol (cur_fdr, ext_sh);
1273 if (pend == (struct mdebug_pending *) NULL)
1275 t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name);
1276 add_pending (cur_fdr, ext_sh, t);
1281 /* mips cc puts out a typedef with the name of the struct for forward
1282 declarations. These should not go into the symbol table and
1283 TYPE_NAME should not be set for them.
1284 They can't be distinguished from an intentional typedef to
1285 the same name however:
1287 struct x { int ix; int jx; };
1291 struct xx {int ixx; int jxx; };
1292 generates a cross referencing stTypedef for x and xx.
1293 The user visible effect of this is that the type of a pointer
1294 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1295 The problem is fixed with alpha cc and Irix5 cc. */
1297 /* However if the typedef cross references to an opaque aggregate, it
1298 is safe to omit it from the symbol table. */
1300 if (has_opaque_xref (cur_fdr, sh))
1302 s = new_symbol (name);
1303 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1304 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1305 SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
1306 SYMBOL_TYPE (s) = t;
1307 add_symbol (s, top_stack->cur_block);
1309 /* Incomplete definitions of structs should not get a name. */
1310 if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
1311 && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
1312 || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
1313 && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
1315 if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
1316 || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
1318 /* If we are giving a name to a type such as "pointer to
1319 foo" or "function returning foo", we better not set
1320 the TYPE_NAME. If the program contains "typedef char
1321 *caddr_t;", we don't want all variables of type char
1322 * to print as caddr_t. This is not just a
1323 consequence of GDB's type management; CC and GCC (at
1324 least through version 2.4) both output variables of
1325 either type char * or caddr_t with the type
1326 refering to the stTypedef symbol for caddr_t. If a future
1327 compiler cleans this up it GDB is not ready for it
1328 yet, but if it becomes ready we somehow need to
1329 disable this check (without breaking the PCC/GCC2.4
1334 Fortunately, this check seems not to be necessary
1335 for anything except pointers or functions. */
1338 TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s);
1342 case stFile: /* file name */
1343 push_parse_stack ();
1344 top_stack->blocktype = sh->st;
1347 /* I`ve never seen these for C */
1349 break; /* register relocation */
1351 break; /* forwarding address */
1353 break; /* constant */
1355 complaint (&symfile_complaints, "unknown symbol type 0x%x", sh->st);
1362 /* Parse the type information provided in the raw AX entries for
1363 the symbol SH. Return the bitfield size in BS, in case.
1364 We must byte-swap the AX entries before we use them; BIGEND says whether
1365 they are big-endian or little-endian (from fh->fBigendian). */
1367 static struct type *
1368 parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs,
1369 int bigend, char *sym_name)
1371 /* Null entries in this map are treated specially */
1372 static struct type **map_bt[] =
1374 &mdebug_type_void, /* btNil */
1375 &mdebug_type_adr_32, /* btAdr */
1376 &mdebug_type_char, /* btChar */
1377 &mdebug_type_unsigned_char, /* btUChar */
1378 &mdebug_type_short, /* btShort */
1379 &mdebug_type_unsigned_short, /* btUShort */
1380 &mdebug_type_int_32, /* btInt */
1381 &mdebug_type_unsigned_int_32, /* btUInt */
1382 &mdebug_type_long_32, /* btLong */
1383 &mdebug_type_unsigned_long_32, /* btULong */
1384 &mdebug_type_float, /* btFloat */
1385 &mdebug_type_double, /* btDouble */
1392 &mdebug_type_complex, /* btComplex */
1393 &mdebug_type_double_complex, /* btDComplex */
1395 &mdebug_type_fixed_dec, /* btFixedDec */
1396 &mdebug_type_float_dec, /* btFloatDec */
1397 &mdebug_type_string, /* btString */
1400 &mdebug_type_void, /* btVoid */
1401 0, /* DEC C++: Pointer to member */
1402 0, /* DEC C++: Virtual function table */
1403 0, /* DEC C++: Class (Record) */
1404 &mdebug_type_long_64, /* btLong64 */
1405 &mdebug_type_unsigned_long_64, /* btULong64 */
1406 &mdebug_type_long_long_64, /* btLongLong64 */
1407 &mdebug_type_unsigned_long_long_64, /* btULongLong64 */
1408 &mdebug_type_adr_64, /* btAdr64 */
1409 &mdebug_type_int_64, /* btInt64 */
1410 &mdebug_type_unsigned_int_64, /* btUInt64 */
1414 struct type *tp = 0;
1415 enum type_code type_code = TYPE_CODE_UNDEF;
1417 /* Handle undefined types, they have indexNil. */
1418 if (aux_index == indexNil)
1419 return mdebug_type_int;
1421 /* Handle corrupt aux indices. */
1422 if (aux_index >= (debug_info->fdr + fd)->caux)
1424 index_complaint (sym_name);
1425 return mdebug_type_int;
1429 /* Use aux as a type information record, map its basic type. */
1430 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1431 if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt)))
1433 basic_type_complaint (t->bt, sym_name);
1434 return mdebug_type_int;
1438 tp = *map_bt[t->bt];
1443 /* Cannot use builtin types -- build our own */
1447 type_code = TYPE_CODE_STRUCT;
1450 type_code = TYPE_CODE_UNION;
1453 type_code = TYPE_CODE_ENUM;
1456 type_code = TYPE_CODE_RANGE;
1459 type_code = TYPE_CODE_SET;
1462 /* alpha cc -migrate uses this for typedefs. The true type will
1463 be obtained by crossreferencing below. */
1464 type_code = TYPE_CODE_ERROR;
1467 /* alpha cc uses this for typedefs. The true type will be
1468 obtained by crossreferencing below. */
1469 type_code = TYPE_CODE_ERROR;
1472 basic_type_complaint (t->bt, sym_name);
1473 return mdebug_type_int;
1477 /* Move on to next aux */
1482 int width = AUX_GET_WIDTH (bigend, ax);
1484 /* Inhibit core dumps with some cfront generated objects that
1486 if (bs == (int *) NULL)
1488 /* Alpha cc -migrate encodes char and unsigned char types
1489 as short and unsigned short types with a field width of 8.
1490 Enum types also have a field width which we ignore for now. */
1491 if (t->bt == btShort && width == 8)
1492 tp = mdebug_type_char;
1493 else if (t->bt == btUShort && width == 8)
1494 tp = mdebug_type_unsigned_char;
1495 else if (t->bt == btEnum)
1498 complaint (&symfile_complaints, "can't handle TIR fBitfield for %s",
1506 /* A btIndirect entry cross references to an aux entry containing
1508 if (t->bt == btIndirect)
1515 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
1517 if (rn->rfd == 0xfff)
1519 rf = AUX_GET_ISYM (bigend, ax);
1527 complaint (&symfile_complaints,
1528 "unable to cross ref btIndirect for %s", sym_name);
1529 return mdebug_type_int;
1531 xref_fh = get_rfd (fd, rf);
1532 xref_fd = xref_fh - debug_info->fdr;
1533 tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
1534 rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
1537 /* All these types really point to some (common) MIPS type
1538 definition, and only the type-qualifiers fully identify
1539 them. We'll make the same effort at sharing. */
1540 if (t->bt == btStruct ||
1544 /* btSet (I think) implies that the name is a tag name, not a typedef
1545 name. This apparently is a MIPS extension for C sets. */
1550 /* Try to cross reference this type, build new type on failure. */
1551 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1552 if (tp == (struct type *) NULL)
1553 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1555 /* DEC c89 produces cross references to qualified aggregate types,
1556 dereference them. */
1557 while (TYPE_CODE (tp) == TYPE_CODE_PTR
1558 || TYPE_CODE (tp) == TYPE_CODE_ARRAY)
1559 tp = TYPE_TARGET_TYPE (tp);
1561 /* Make sure that TYPE_CODE(tp) has an expected type code.
1562 Any type may be returned from cross_ref if file indirect entries
1564 if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
1565 && TYPE_CODE (tp) != TYPE_CODE_UNION
1566 && TYPE_CODE (tp) != TYPE_CODE_ENUM)
1568 unexpected_type_code_complaint (sym_name);
1573 /* Usually, TYPE_CODE(tp) is already type_code. The main
1574 exception is if we guessed wrong re struct/union/enum.
1575 But for struct vs. union a wrong guess is harmless, so
1576 don't complain(). */
1577 if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
1578 && type_code != TYPE_CODE_ENUM)
1579 || (TYPE_CODE (tp) != TYPE_CODE_ENUM
1580 && type_code == TYPE_CODE_ENUM))
1582 bad_tag_guess_complaint (sym_name);
1585 if (TYPE_CODE (tp) != type_code)
1587 TYPE_CODE (tp) = type_code;
1590 /* Do not set the tag name if it is a compiler generated tag name
1591 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1592 if (name[0] == '.' || name[0] == '\0')
1593 TYPE_TAG_NAME (tp) = NULL;
1594 else if (TYPE_TAG_NAME (tp) == NULL
1595 || !STREQ (TYPE_TAG_NAME (tp), name))
1596 TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),
1597 ¤t_objfile->type_obstack);
1601 /* All these types really point to some (common) MIPS type
1602 definition, and only the type-qualifiers fully identify
1603 them. We'll make the same effort at sharing.
1604 FIXME: We are not doing any guessing on range types. */
1605 if (t->bt == btRange)
1609 /* Try to cross reference this type, build new type on failure. */
1610 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1611 if (tp == (struct type *) NULL)
1612 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1614 /* Make sure that TYPE_CODE(tp) has an expected type code.
1615 Any type may be returned from cross_ref if file indirect entries
1617 if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
1619 unexpected_type_code_complaint (sym_name);
1623 /* Usually, TYPE_CODE(tp) is already type_code. The main
1624 exception is if we guessed wrong re struct/union/enum. */
1625 if (TYPE_CODE (tp) != type_code)
1627 bad_tag_guess_complaint (sym_name);
1628 TYPE_CODE (tp) = type_code;
1630 if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))
1631 TYPE_NAME (tp) = obsavestring (name, strlen (name),
1632 ¤t_objfile->type_obstack);
1635 if (t->bt == btTypedef)
1639 /* Try to cross reference this type, it should succeed. */
1640 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1641 if (tp == (struct type *) NULL)
1643 complaint (&symfile_complaints,
1644 "unable to cross ref btTypedef for %s", sym_name);
1645 tp = mdebug_type_int;
1649 /* Deal with range types */
1650 if (t->bt == btRange)
1652 TYPE_NFIELDS (tp) = 2;
1653 TYPE_FIELDS (tp) = ((struct field *)
1654 TYPE_ALLOC (tp, 2 * sizeof (struct field)));
1655 TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),
1656 ¤t_objfile->type_obstack);
1657 TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);
1659 TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),
1660 ¤t_objfile->type_obstack);
1661 TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);
1665 /* Parse all the type qualifiers now. If there are more
1666 than 6 the game will continue in the next aux */
1670 #define PARSE_TQ(tq) \
1671 if (t->tq != tqNil) \
1672 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1684 /* mips cc 2.x and gcc never put out continued aux entries. */
1688 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1692 /* Complain for illegal continuations due to corrupt aux entries. */
1694 complaint (&symfile_complaints, "illegal TIR continued for %s", sym_name);
1699 /* Make up a complex type from a basic one. Type is passed by
1700 reference in TPP and side-effected as necessary. The type
1701 qualifier TQ says how to handle the aux symbols at AX for
1702 the symbol SX we are currently analyzing. BIGEND says whether
1703 aux symbols are big-endian or little-endian.
1704 Returns the number of aux symbols we parsed. */
1707 upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend,
1713 /* Used in array processing */
1724 t = lookup_pointer_type (*tpp);
1729 t = lookup_function_type (*tpp);
1736 /* Determine and record the domain type (type of index) */
1737 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
1743 rf = AUX_GET_ISYM (bigend, ax);
1746 fh = get_rfd (fd, rf);
1748 indx = parse_type (fh - debug_info->fdr,
1749 debug_info->external_aux + fh->iauxBase,
1750 id, (int *) NULL, bigend, sym_name);
1752 /* The bounds type should be an integer type, but might be anything
1753 else due to corrupt aux entries. */
1754 if (TYPE_CODE (indx) != TYPE_CODE_INT)
1756 complaint (&symfile_complaints,
1757 "illegal array index type for %s, assuming int", sym_name);
1758 indx = mdebug_type_int;
1761 /* Get the bounds, and create the array type. */
1763 lower = AUX_GET_DNLOW (bigend, ax);
1765 upper = AUX_GET_DNHIGH (bigend, ax);
1767 rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
1769 range = create_range_type ((struct type *) NULL, indx,
1772 t = create_array_type ((struct type *) NULL, *tpp, range);
1774 /* We used to fill in the supplied array element bitsize
1775 here if the TYPE_LENGTH of the target type was zero.
1776 This happens for a `pointer to an array of anonymous structs',
1777 but in this case the array element bitsize is also zero,
1778 so nothing is gained.
1779 And we used to check the TYPE_LENGTH of the target type against
1780 the supplied array element bitsize.
1781 gcc causes a mismatch for `pointer to array of object',
1782 since the sdb directives it uses do not have a way of
1783 specifying the bitsize, but it does no harm (the
1784 TYPE_LENGTH should be correct) and we should be able to
1785 ignore the erroneous bitsize from the auxiliary entry safely.
1786 dbx seems to ignore it too. */
1788 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1790 if (TYPE_LENGTH (*tpp) == 0)
1792 TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB;
1799 /* Volatile -- currently ignored */
1803 /* Const -- currently ignored */
1807 complaint (&symfile_complaints, "unknown type qualifier 0x%x", tq);
1813 /* Parse a procedure descriptor record PR. Note that the procedure is
1814 parsed _after_ the local symbols, now we just insert the extra
1815 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1816 already been placed in the procedure's main block. Note also that
1817 images that have been partially stripped (ld -x) have been deprived
1818 of local symbols, and we have to cope with them here. FIRST_OFF is
1819 the offset of the first procedure for this FDR; we adjust the
1820 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1821 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1822 in question, or NULL to use top_stack->cur_block. */
1824 static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *);
1827 parse_procedure (PDR *pr, struct symtab *search_symtab,
1828 struct partial_symtab *pst)
1830 struct symbol *s, *i;
1832 struct mips_extra_func_info *e;
1835 /* Simple rule to find files linked "-x" */
1836 if (cur_fdr->rss == -1)
1840 /* Static procedure at address pr->adr. Sigh. */
1841 /* FIXME-32x64. assuming pr->adr fits in long. */
1842 complaint (&symfile_complaints,
1843 "can't handle PDR for static proc at 0x%lx",
1844 (unsigned long) pr->adr);
1852 (*debug_swap->swap_ext_in) (cur_bfd,
1853 ((char *) debug_info->external_ext
1855 * debug_swap->external_ext_size)),
1857 sh_name = debug_info->ssext + she.asym.iss;
1865 (*debug_swap->swap_sym_in) (cur_bfd,
1866 ((char *) debug_info->external_sym
1867 + ((cur_fdr->isymBase + pr->isym)
1868 * debug_swap->external_sym_size)),
1870 sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
1873 if (search_symtab != NULL)
1876 /* This loses both in the case mentioned (want a static, find a global),
1877 but also if we are looking up a non-mangled name which happens to
1878 match the name of a mangled function. */
1879 /* We have to save the cur_fdr across the call to lookup_symbol.
1880 If the pdr is for a static function and if a global function with
1881 the same name exists, lookup_symbol will eventually read in the symtab
1882 for the global function and clobber cur_fdr. */
1883 FDR *save_cur_fdr = cur_fdr;
1884 s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
1885 cur_fdr = save_cur_fdr;
1889 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),
1895 s = mylookup_symbol (sh_name, top_stack->cur_block,
1896 VAR_NAMESPACE, LOC_BLOCK);
1900 b = SYMBOL_BLOCK_VALUE (s);
1904 complaint (&symfile_complaints, "PDR for %s, but no symbol", sh_name);
1908 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1909 s = new_symbol (sh_name);
1910 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1911 SYMBOL_CLASS (s) = LOC_BLOCK;
1912 /* Donno its type, hope int is ok */
1913 SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int);
1914 add_symbol (s, top_stack->cur_block);
1915 /* Wont have symbols for this one */
1917 SYMBOL_BLOCK_VALUE (s) = b;
1918 BLOCK_FUNCTION (b) = s;
1919 BLOCK_START (b) = pr->adr;
1920 /* BOUND used to be the end of procedure's text, but the
1921 argument is no longer passed in. */
1922 BLOCK_END (b) = bound;
1923 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1924 add_block (b, top_stack->cur_st);
1928 i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);
1932 e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);
1934 e->pdr.isym = (long) s;
1936 /* GDB expects the absolute function start address for the
1937 procedure descriptor in e->pdr.adr.
1938 As the address in the procedure descriptor is usually relative,
1939 we would have to relocate e->pdr.adr with cur_fdr->adr and
1940 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1941 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1942 in shared libraries on some systems, and on other systems
1943 e->pdr.adr is sometimes offset by a bogus value.
1944 To work around these problems, we replace e->pdr.adr with
1945 the start address of the function. */
1946 e->pdr.adr = BLOCK_START (b);
1948 /* Correct incorrect setjmp procedure descriptor from the library
1949 to make backtrace through setjmp work. */
1950 if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp"))
1952 complaint (&symfile_complaints, "fixing bad setjmp PDR from libc");
1953 e->pdr.pcreg = RA_REGNUM;
1954 e->pdr.regmask = 0x80000000;
1955 e->pdr.regoffset = -4;
1959 /* It would be reasonable that functions that have been compiled
1960 without debugging info have a btNil type for their return value,
1961 and functions that are void and are compiled with debugging info
1963 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1964 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1966 The glevel field in cur_fdr could be used to determine the presence
1967 of debugging info, but GCC doesn't always pass the -g switch settings
1968 to the assembler and GAS doesn't set the glevel field from the -g switch
1970 To work around these problems, the return value type of a TYPE_CODE_VOID
1971 function is adjusted accordingly if no debugging info was found in the
1972 compilation unit. */
1974 if (processing_gcc_compilation == 0
1975 && found_ecoff_debugging_info == 0
1976 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)
1977 SYMBOL_TYPE (s) = nodebug_func_symbol_type;
1980 /* Relocate the extra function info pointed to by the symbol table. */
1983 ecoff_relocate_efi (struct symbol *sym, CORE_ADDR delta)
1985 struct mips_extra_func_info *e;
1987 e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym);
1989 e->pdr.adr += delta;
1992 /* Parse the external symbol ES. Just call parse_symbol() after
1993 making sure we know where the aux are for it.
1994 BIGEND says whether aux entries are big-endian or little-endian.
1996 This routine clobbers top_stack->cur_block and ->cur_st. */
1998 static void parse_external (EXTR *, int, struct section_offsets *,
2002 parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets,
2003 struct objfile *objfile)
2007 if (es->ifd != ifdNil)
2010 cur_fdr = debug_info->fdr + cur_fd;
2011 ax = debug_info->external_aux + cur_fdr->iauxBase;
2015 cur_fdr = debug_info->fdr;
2019 /* Reading .o files */
2020 if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil)
2023 switch (es->asym.st)
2026 /* These are generated for static symbols in .o files,
2047 /* FIXME: Turn this into a complaint? */
2049 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2050 what, debug_info->ssext + es->asym.iss,
2051 fdr_name (cur_fdr));
2055 switch (es->asym.st)
2059 /* There is no need to parse the external procedure symbols.
2060 If they are from objects compiled without -g, their index will
2061 be indexNil, and the symbol definition from the minimal symbol
2062 is preferrable (yielding a function returning int instead of int).
2063 If the index points to a local procedure symbol, the local
2064 symbol already provides the correct type.
2065 Note that the index of the external procedure symbol points
2066 to the local procedure symbol in the local symbol table, and
2067 _not_ to the auxiliary symbol info. */
2071 /* Global common symbols are resolved by the runtime loader,
2073 if (SC_IS_COMMON (es->asym.sc))
2076 /* Note that the case of a symbol with indexNil must be handled
2077 anyways by parse_symbol(). */
2078 parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile);
2085 /* Parse the line number info for file descriptor FH into
2086 GDB's linetable LT. MIPS' encoding requires a little bit
2087 of magic to get things out. Note also that MIPS' line
2088 numbers can go back and forth, apparently we can live
2089 with that and do not need to reorder our linetables */
2091 static void parse_lines (FDR *, PDR *, struct linetable *, int,
2092 struct partial_symtab *, CORE_ADDR);
2095 parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines,
2096 struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr)
2098 unsigned char *base;
2100 int delta, count, lineno = 0;
2102 if (fh->cbLine == 0)
2105 /* Scan by procedure descriptors */
2107 for (j = 0; j < fh->cpd; j++, pr++)
2111 unsigned char *halt;
2113 /* No code for this one */
2114 if (pr->iline == ilineNil ||
2115 pr->lnLow == -1 || pr->lnHigh == -1)
2118 /* Determine start and end address of compressed line bytes for
2120 base = debug_info->line + fh->cbLineOffset;
2121 if (j != (fh->cpd - 1))
2122 halt = base + pr[1].cbLineOffset;
2124 halt = base + fh->cbLine;
2125 base += pr->cbLineOffset;
2127 adr = pst->textlow + pr->adr - lowest_pdr_addr;
2129 l = adr >> 2; /* in words */
2130 for (lineno = pr->lnLow; base < halt;)
2132 count = *base & 0x0f;
2133 delta = *base++ >> 4;
2138 delta = (base[0] << 8) | base[1];
2139 if (delta >= 0x8000)
2143 lineno += delta; /* first delta is 0 */
2145 /* Complain if the line table overflows. Could happen
2146 with corrupt binaries. */
2147 if (lt->nitems >= maxlines)
2149 complaint (&symfile_complaints,
2150 "guessed size of linetable for %s incorrectly",
2154 k = add_line (lt, lineno, l, k);
2161 function_outside_compilation_unit_complaint (const char *arg1)
2163 complaint (&symfile_complaints,
2164 "function `%s' appears to be defined outside of all compilation units",
2168 /* Master parsing procedure for first-pass reading of file symbols
2169 into a partial_symtab. */
2172 parse_partial_symbols (struct objfile *objfile)
2174 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
2175 const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
2176 const bfd_size_type external_ext_size = debug_swap->external_ext_size;
2177 void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in;
2178 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
2179 void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in;
2181 HDRR *hdr = &debug_info->symbolic_header;
2182 /* Running pointers */
2187 register EXTR *ext_in;
2190 struct partial_symtab *pst;
2191 int textlow_not_set = 1;
2192 int past_first_source_file = 0;
2194 /* List of current psymtab's include files */
2195 char **psymtab_include_list;
2196 int includes_allocated;
2199 struct pst_map *fdr_to_pst;
2200 /* Index within current psymtab dependency list */
2201 struct partial_symtab **dependency_list;
2202 int dependencies_used, dependencies_allocated;
2203 struct cleanup *old_chain;
2205 enum language prev_language;
2206 asection *text_sect;
2207 int relocatable = 0;
2209 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2210 the shared libraries are prelinked at a high memory address.
2211 We have to adjust the start address of the object file for this case,
2212 by setting it to the start address of the first procedure in the file.
2213 But we should do no adjustments if we are debugging a .o file, where
2214 the text section (and fh->adr) really starts at zero. */
2215 text_sect = bfd_get_section_by_name (cur_bfd, ".text");
2216 if (text_sect != NULL
2217 && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
2220 extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack,
2221 sizeof (EXTR) * hdr->iextMax);
2223 includes_allocated = 30;
2225 psymtab_include_list = (char **) alloca (includes_allocated *
2227 next_symbol_text_func = mdebug_next_symbol_text;
2229 dependencies_allocated = 30;
2230 dependencies_used = 0;
2232 (struct partial_symtab **) alloca (dependencies_allocated *
2233 sizeof (struct partial_symtab *));
2235 last_source_file = NULL;
2240 * Only parse the Local and External symbols, and the Relative FDR.
2241 * Fixup enough of the loader symtab to be able to use it.
2242 * Allocate space only for the file's portions we need to
2247 max_glevel = MIN_GLEVEL;
2249 /* Allocate the map FDR -> PST.
2250 Minor hack: -O3 images might claim some global data belongs
2251 to FDR -1. We`ll go along with that */
2252 fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);
2253 old_chain = make_cleanup (xfree, fdr_to_pst);
2256 struct partial_symtab *pst = new_psymtab ("", objfile);
2257 fdr_to_pst[-1].pst = pst;
2261 /* Allocate the global pending list. */
2263 ((struct mdebug_pending **)
2264 obstack_alloc (&objfile->psymbol_obstack,
2265 hdr->ifdMax * sizeof (struct mdebug_pending *)));
2266 memset (pending_list, 0,
2267 hdr->ifdMax * sizeof (struct mdebug_pending *));
2269 /* Pass 0 over external syms: swap them in. */
2270 ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));
2271 make_cleanup (xfree, ext_block);
2273 ext_out = (char *) debug_info->external_ext;
2274 ext_out_end = ext_out + hdr->iextMax * external_ext_size;
2276 for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
2277 (*swap_ext_in) (cur_bfd, ext_out, ext_in);
2279 /* Pass 1 over external syms: Presize and partition the list */
2281 ext_in_end = ext_in + hdr->iextMax;
2282 for (; ext_in < ext_in_end; ext_in++)
2284 /* See calls to complain below. */
2285 if (ext_in->ifd >= -1
2286 && ext_in->ifd < hdr->ifdMax
2287 && ext_in->asym.iss >= 0
2288 && ext_in->asym.iss < hdr->issExtMax)
2289 fdr_to_pst[ext_in->ifd].n_globals++;
2292 /* Pass 1.5 over files: partition out global symbol space */
2294 for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
2296 fdr_to_pst[f_idx].globals_offset = s_idx;
2297 s_idx += fdr_to_pst[f_idx].n_globals;
2298 fdr_to_pst[f_idx].n_globals = 0;
2303 For ECOFF in ELF, we skip the creation of the minimal symbols.
2304 The ECOFF symbols should be a subset of the Elf symbols, and the
2305 section information of the elf symbols will be more accurate.
2306 FIXME! What about Irix 5's native linker?
2308 By default, Elf sections which don't exist in ECOFF
2309 get put in ECOFF's absolute section by the gnu linker.
2310 Since absolute sections don't get relocated, we
2311 end up calculating an address different from that of
2312 the symbol's minimal symbol (created earlier from the
2315 To fix this, either :
2316 1) don't create the duplicate symbol
2317 (assumes ECOFF symtab is a subset of the ELF symtab;
2318 assumes no side-effects result from ignoring ECOFF symbol)
2319 2) create it, only if lookup for existing symbol in ELF's minimal
2322 assumes no side-effects result from ignoring ECOFF symbol)
2323 3) create it, but lookup ELF's minimal symbol and use it's section
2324 during relocation, then modify "uniqify" phase to merge and
2325 eliminate the duplicate symbol
2326 (highly inefficient)
2328 I've implemented #1 here...
2329 Skip the creation of the minimal symbols based on the ECOFF
2332 /* Pass 2 over external syms: fill in external symbols */
2334 ext_in_end = ext_in + hdr->iextMax;
2335 for (; ext_in < ext_in_end; ext_in++)
2337 enum minimal_symbol_type ms_type = mst_text;
2338 CORE_ADDR svalue = ext_in->asym.value;
2340 /* The Irix 5 native tools seem to sometimes generate bogus
2341 external symbols. */
2342 if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
2344 complaint (&symfile_complaints,
2345 "bad ifd for external symbol: %d (max %ld)", ext_in->ifd,
2349 if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
2351 complaint (&symfile_complaints,
2352 "bad iss for external symbol: %ld (max %ld)",
2353 ext_in->asym.iss, hdr->issExtMax);
2357 extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
2358 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
2361 if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil)
2365 /* Pass 3 over files, over local syms: fill in static symbols */
2366 name = debug_info->ssext + ext_in->asym.iss;
2368 /* Process ECOFF Symbol Types and Storage Classes */
2369 switch (ext_in->asym.st)
2372 /* Beginnning of Procedure */
2373 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2376 /* Load time only static procs */
2377 ms_type = mst_file_text;
2378 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2381 /* External symbol */
2382 if (SC_IS_COMMON (ext_in->asym.sc))
2384 /* The value of a common symbol is its size, not its address.
2388 else if (SC_IS_DATA (ext_in->asym.sc))
2391 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2393 else if (SC_IS_BSS (ext_in->asym.sc))
2396 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2398 else if (SC_IS_SBSS (ext_in->asym.sc))
2401 svalue += ANOFFSET (objfile->section_offsets,
2402 get_section_index (objfile, ".sbss"));
2410 /* On certain platforms, some extra label symbols can be
2411 generated by the linker. One possible usage for this kind
2412 of symbols is to represent the address of the begining of a
2413 given section. For instance, on Tru64 5.1, the address of
2414 the _ftext label is the start address of the .text section.
2416 The storage class of these symbols is usually directly
2417 related to the section to which the symbol refers. For
2418 instance, on Tru64 5.1, the storage class for the _fdata
2419 label is scData, refering to the .data section.
2421 It is actually possible that the section associated to the
2422 storage class of the label does not exist. On True64 5.1
2423 for instance, the libm.so shared library does not contain
2424 any .data section, although it contains a _fpdata label
2425 which storage class is scData... Since these symbols are
2426 usually useless for the debugger user anyway, we just
2427 discard these symbols.
2430 if (SC_IS_TEXT (ext_in->asym.sc))
2432 if (objfile->sect_index_text == -1)
2435 ms_type = mst_file_text;
2436 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2438 else if (SC_IS_DATA (ext_in->asym.sc))
2440 if (objfile->sect_index_data == -1)
2443 ms_type = mst_file_data;
2444 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2446 else if (SC_IS_BSS (ext_in->asym.sc))
2448 if (objfile->sect_index_bss == -1)
2451 ms_type = mst_file_bss;
2452 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2454 else if (SC_IS_SBSS (ext_in->asym.sc))
2456 const int sbss_sect_index = get_section_index (objfile, ".sbss");
2458 if (sbss_sect_index == -1)
2461 ms_type = mst_file_bss;
2462 svalue += ANOFFSET (objfile->section_offsets, sbss_sect_index);
2469 /* The alpha has the section start addresses in stLocal symbols
2470 whose name starts with a `.'. Skip those but complain for all
2471 other stLocal symbols.
2472 Irix6 puts the section start addresses in stNil symbols, skip
2478 ms_type = mst_unknown;
2479 unknown_ext_complaint (name);
2481 if (!ECOFF_IN_ELF (cur_bfd))
2482 prim_record_minimal_symbol (name, svalue, ms_type, objfile);
2485 /* Pass 3 over files, over local syms: fill in static symbols */
2486 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2488 struct partial_symtab *save_pst;
2492 cur_fdr = fh = debug_info->fdr + f_idx;
2496 fdr_to_pst[f_idx].pst = NULL;
2500 /* Determine the start address for this object file from the
2501 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2505 if (relocatable || textlow != 0)
2506 textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2510 pst = start_psymtab_common (objfile, objfile->section_offsets,
2513 objfile->global_psymbols.next,
2514 objfile->static_psymbols.next);
2515 pst->read_symtab_private = ((char *)
2516 obstack_alloc (&objfile->psymbol_obstack,
2517 sizeof (struct symloc)));
2518 memset (pst->read_symtab_private, 0, sizeof (struct symloc));
2521 FDR_IDX (pst) = f_idx;
2522 CUR_BFD (pst) = cur_bfd;
2523 DEBUG_SWAP (pst) = debug_swap;
2524 DEBUG_INFO (pst) = debug_info;
2525 PENDING_LIST (pst) = pending_list;
2527 /* The way to turn this into a symtab is to call... */
2528 pst->read_symtab = mdebug_psymtab_to_symtab;
2530 /* Set up language for the pst.
2531 The language from the FDR is used if it is unambigious (e.g. cfront
2532 with native cc and g++ will set the language to C).
2533 Otherwise we have to deduce the language from the filename.
2534 Native ecoff has every header file in a separate FDR, so
2535 deduce_language_from_filename will return language_unknown for
2536 a header file, which is not what we want.
2537 But the FDRs for the header files are after the FDR for the source
2538 file, so we can assign the language of the source file to the
2539 following header files. Then we save the language in the private
2540 pst data so that we can reuse it when building symtabs. */
2541 prev_language = psymtab_language;
2545 case langCplusplusV2:
2546 psymtab_language = language_cplus;
2549 psymtab_language = deduce_language_from_filename (fdr_name (fh));
2552 if (psymtab_language == language_unknown)
2553 psymtab_language = prev_language;
2554 PST_PRIVATE (pst)->pst_language = psymtab_language;
2556 pst->texthigh = pst->textlow;
2558 /* For stabs-in-ecoff files, the second symbol must be @stab.
2559 This symbol is emitted by mips-tfile to signal that the
2560 current object file uses encapsulated stabs instead of mips
2561 ecoff for local symbols. (It is the second symbol because
2562 the first symbol is the stFile used to signal the start of a
2564 processing_gcc_compilation = 0;
2567 (*swap_sym_in) (cur_bfd,
2568 ((char *) debug_info->external_sym
2569 + (fh->isymBase + 1) * external_sym_size),
2571 if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol))
2572 processing_gcc_compilation = 2;
2575 if (processing_gcc_compilation != 0)
2577 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
2582 (*swap_sym_in) (cur_bfd,
2583 (((char *) debug_info->external_sym)
2584 + (fh->isymBase + cur_sdx) * external_sym_size),
2586 type_code = ECOFF_UNMARK_STAB (sh.index);
2587 if (!ECOFF_IS_STAB (&sh))
2589 if (sh.st == stProc || sh.st == stStaticProc)
2594 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2595 if (sh.st == stStaticProc)
2597 namestring = debug_info->ss + fh->issBase + sh.iss;
2598 prim_record_minimal_symbol_and_info (namestring,
2602 SECT_OFF_TEXT (objfile),
2606 procaddr = sh.value;
2608 isym = AUX_GET_ISYM (fh->fBigendian,
2609 (debug_info->external_aux
2612 (*swap_sym_in) (cur_bfd,
2613 ((char *) debug_info->external_sym
2614 + ((fh->isymBase + isym - 1)
2615 * external_sym_size)),
2619 CORE_ADDR high = procaddr + sh.value;
2621 /* Kludge for Irix 5.2 zero fh->adr. */
2623 && (pst->textlow == 0 || procaddr < pst->textlow))
2624 pst->textlow = procaddr;
2625 if (high > pst->texthigh)
2626 pst->texthigh = high;
2629 else if (sh.st == stStatic)
2644 namestring = debug_info->ss + fh->issBase + sh.iss;
2645 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2646 prim_record_minimal_symbol_and_info (namestring,
2650 SECT_OFF_DATA (objfile),
2656 /* FIXME! Shouldn't this use cases for bss,
2657 then have the default be abs? */
2658 namestring = debug_info->ss + fh->issBase + sh.iss;
2659 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2660 prim_record_minimal_symbol_and_info (namestring,
2664 SECT_OFF_BSS (objfile),
2672 /* Handle stabs continuation */
2674 char *stabstring = debug_info->ss + fh->issBase + sh.iss;
2675 int len = strlen (stabstring);
2676 while (stabstring[len - 1] == '\\')
2679 char *stabstring1 = stabstring;
2683 /* Ignore continuation char from 1st string */
2686 /* Read next stabstring */
2688 (*swap_sym_in) (cur_bfd,
2689 (((char *) debug_info->external_sym)
2690 + (fh->isymBase + cur_sdx)
2691 * external_sym_size),
2693 stabstring2 = debug_info->ss + fh->issBase + sh2.iss;
2694 len2 = strlen (stabstring2);
2696 /* Concatinate stabstring2 with stabstring1 */
2698 && stabstring != debug_info->ss + fh->issBase + sh.iss)
2699 stabstring = xrealloc (stabstring, len + len2 + 1);
2702 stabstring = xmalloc (len + len2 + 1);
2703 strcpy (stabstring, stabstring1);
2705 strcpy (stabstring + len, stabstring2);
2713 * Standard, external, non-debugger, symbols
2716 case N_TEXT | N_EXT:
2717 case N_NBTEXT | N_EXT:
2718 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2721 case N_DATA | N_EXT:
2722 case N_NBDATA | N_EXT:
2723 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2728 case N_NBBSS | N_EXT:
2729 case N_SETV | N_EXT: /* FIXME, is this in BSS? */
2730 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2737 /* Standard, local, non-debugger, symbols */
2741 /* We need to be able to deal with both N_FN or N_TEXT,
2742 because we have no way of knowing whether the sys-supplied ld
2743 or GNU ld was used to make the executable. Sequents throw
2744 in another wrinkle -- they renumbered N_FN. */
2752 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2755 case N_UNDF | N_EXT:
2756 continue; /* Just undefined, not COMMON */
2761 /* Lots of symbol types we can just ignore. */
2768 /* Keep going . . . */
2771 * Special symbol types for GNU
2774 case N_INDR | N_EXT:
2776 case N_SETA | N_EXT:
2778 case N_SETT | N_EXT:
2780 case N_SETD | N_EXT:
2782 case N_SETB | N_EXT:
2793 static int prev_so_symnum = -10;
2794 static int first_so_symnum;
2796 int prev_textlow_not_set;
2798 valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2800 prev_textlow_not_set = textlow_not_set;
2802 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2803 /* A zero value is probably an indication for the SunPRO 3.0
2804 compiler. end_psymtab explicitly tests for zero, so
2805 don't relocate it. */
2809 textlow_not_set = 1;
2813 textlow_not_set = 0;
2815 textlow_not_set = 0;
2817 past_first_source_file = 1;
2819 if (prev_so_symnum != symnum - 1)
2820 { /* Here if prev stab wasn't N_SO */
2821 first_so_symnum = symnum;
2825 pst = (struct partial_symtab *) 0;
2827 dependencies_used = 0;
2831 prev_so_symnum = symnum;
2833 /* End the current partial symtab and start a new one */
2835 /* SET_NAMESTRING ();*/
2836 namestring = stabstring;
2838 /* Null name means end of .o file. Don't start a new one. */
2839 if (*namestring == '\000')
2842 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2843 The first one is a directory name; the second the file name.
2844 If pst exists, is empty, and has a filename ending in '/',
2845 we assume the previous N_SO was a directory name. */
2847 p = strrchr (namestring, '/');
2848 if (p && *(p + 1) == '\000')
2849 continue; /* Simply ignore directory name SOs */
2851 /* Some other compilers (C++ ones in particular) emit useless
2852 SOs for non-existant .c files. We ignore all subsequent SOs that
2853 immediately follow the first. */
2865 enum language tmp_language;
2866 /* Mark down an include file in the current psymtab */
2868 /* SET_NAMESTRING ();*/
2869 namestring = stabstring;
2871 tmp_language = deduce_language_from_filename (namestring);
2873 /* Only change the psymtab's language if we've learned
2874 something useful (eg. tmp_language is not language_unknown).
2875 In addition, to match what start_subfile does, never change
2877 if (tmp_language != language_unknown
2878 && (tmp_language != language_c
2879 || psymtab_language != language_cplus))
2880 psymtab_language = tmp_language;
2882 /* In C++, one may expect the same filename to come round many
2883 times, when code is coming alternately from the main file
2884 and from inline functions in other files. So I check to see
2885 if this is a file we've seen before -- either the main
2886 source file, or a previously included file.
2888 This seems to be a lot of time to be spending on N_SOL, but
2889 things like "break c-exp.y:435" need to work (I
2890 suppose the psymtab_include_list could be hashed or put
2891 in a binary tree, if profiling shows this is a major hog). */
2892 if (pst && STREQ (namestring, pst->filename))
2896 for (i = 0; i < includes_used; i++)
2897 if (STREQ (namestring, psymtab_include_list[i]))
2906 psymtab_include_list[includes_used++] = namestring;
2907 if (includes_used >= includes_allocated)
2909 char **orig = psymtab_include_list;
2911 psymtab_include_list = (char **)
2912 alloca ((includes_allocated *= 2) *
2914 memcpy ((PTR) psymtab_include_list, (PTR) orig,
2915 includes_used * sizeof (char *));
2919 case N_LSYM: /* Typedef or automatic variable. */
2920 case N_STSYM: /* Data seg var -- static */
2921 case N_LCSYM: /* BSS " */
2922 case N_ROSYM: /* Read-only data seg var -- static. */
2923 case N_NBSTS: /* Gould nobase. */
2924 case N_NBLCS: /* symbols. */
2926 case N_GSYM: /* Global (extern) variable; can be
2927 data or bss (sigh FIXME). */
2929 /* Following may probably be ignored; I'll leave them here
2930 for now (until I do Pascal and Modula 2 extensions). */
2932 case N_PC: /* I may or may not need this; I
2934 case N_M2C: /* I suspect that I can ignore this here. */
2935 case N_SCOPE: /* Same. */
2937 /* SET_NAMESTRING ();*/
2938 namestring = stabstring;
2939 p = (char *) strchr (namestring, ':');
2941 continue; /* Not a debugging symbol. */
2945 /* Main processing section for debugging symbols which
2946 the initial read through the symbol tables needs to worry
2947 about. If we reach this point, the symbol which we are
2948 considering is definitely one we are interested in.
2949 p must also contain the (valid) index into the namestring
2950 which indicates the debugging type symbol. */
2955 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2956 #ifdef STATIC_TRANSFORM_NAME
2957 namestring = STATIC_TRANSFORM_NAME (namestring);
2959 add_psymbol_to_list (namestring, p - namestring,
2960 VAR_NAMESPACE, LOC_STATIC,
2961 &objfile->static_psymbols,
2963 psymtab_language, objfile);
2966 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2967 /* The addresses in these entries are reported to be
2968 wrong. See the code that reads 'G's for symtabs. */
2969 add_psymbol_to_list (namestring, p - namestring,
2970 VAR_NAMESPACE, LOC_STATIC,
2971 &objfile->global_psymbols,
2973 psymtab_language, objfile);
2977 /* When a 'T' entry is defining an anonymous enum, it
2978 may have a name which is the empty string, or a
2979 single space. Since they're not really defining a
2980 symbol, those shouldn't go in the partial symbol
2981 table. We do pick up the elements of such enums at
2982 'check_enum:', below. */
2983 if (p >= namestring + 2
2984 || (p == namestring + 1
2985 && namestring[0] != ' '))
2987 add_psymbol_to_list (namestring, p - namestring,
2988 STRUCT_NAMESPACE, LOC_TYPEDEF,
2989 &objfile->static_psymbols,
2991 psymtab_language, objfile);
2994 /* Also a typedef with the same name. */
2995 add_psymbol_to_list (namestring, p - namestring,
2996 VAR_NAMESPACE, LOC_TYPEDEF,
2997 &objfile->static_psymbols,
2999 psymtab_language, objfile);
3002 /* The semantics of C++ state that "struct foo { ... }"
3003 also defines a typedef for "foo". Unfortuantely, cfront
3004 never makes the typedef when translating from C++ to C.
3005 We make the typedef here so that "ptype foo" works as
3006 expected for cfront translated code. */
3007 else if (psymtab_language == language_cplus)
3009 /* Also a typedef with the same name. */
3010 add_psymbol_to_list (namestring, p - namestring,
3011 VAR_NAMESPACE, LOC_TYPEDEF,
3012 &objfile->static_psymbols,
3014 psymtab_language, objfile);
3019 if (p != namestring) /* a name is there, not just :T... */
3021 add_psymbol_to_list (namestring, p - namestring,
3022 VAR_NAMESPACE, LOC_TYPEDEF,
3023 &objfile->static_psymbols,
3025 psymtab_language, objfile);
3028 /* If this is an enumerated type, we need to
3029 add all the enum constants to the partial symbol
3030 table. This does not cover enums without names, e.g.
3031 "enum {a, b} c;" in C, but fortunately those are
3032 rare. There is no way for GDB to find those from the
3033 enum type without spending too much time on it. Thus
3034 to solve this problem, the compiler needs to put out the
3035 enum in a nameless type. GCC2 does this. */
3037 /* We are looking for something of the form
3038 <name> ":" ("t" | "T") [<number> "="] "e"
3039 {<constant> ":" <value> ","} ";". */
3041 /* Skip over the colon and the 't' or 'T'. */
3043 /* This type may be given a number. Also, numbers can come
3044 in pairs like (0,26). Skip over it. */
3045 while ((*p >= '0' && *p <= '9')
3046 || *p == '(' || *p == ',' || *p == ')'
3052 /* The aix4 compiler emits extra crud before the members. */
3055 /* Skip over the type (?). */
3059 /* Skip over the colon. */
3063 /* We have found an enumerated type. */
3064 /* According to comments in read_enum_type
3065 a comma could end it instead of a semicolon.
3066 I don't know where that happens.
3068 while (*p && *p != ';' && *p != ',')
3072 /* Check for and handle cretinous dbx symbol name
3074 if (*p == '\\' || (*p == '?' && p[1] == '\0'))
3075 p = next_symbol_text (objfile);
3077 /* Point to the character after the name
3078 of the enum constant. */
3079 for (q = p; *q && *q != ':'; q++)
3081 /* Note that the value doesn't matter for
3082 enum constants in psymtabs, just in symtabs. */
3083 add_psymbol_to_list (p, q - p,
3084 VAR_NAMESPACE, LOC_CONST,
3085 &objfile->static_psymbols, 0,
3086 0, psymtab_language, objfile);
3087 /* Point past the name. */
3089 /* Skip over the value. */
3090 while (*p && *p != ',')
3092 /* Advance past the comma. */
3099 /* Constant, e.g. from "const" in Pascal. */
3100 add_psymbol_to_list (namestring, p - namestring,
3101 VAR_NAMESPACE, LOC_CONST,
3102 &objfile->static_psymbols, sh.value,
3103 0, psymtab_language, objfile);
3109 int name_len = p - namestring;
3110 char *name = xmalloc (name_len + 1);
3111 memcpy (name, namestring, name_len);
3112 name[name_len] = '\0';
3113 function_outside_compilation_unit_complaint (name);
3116 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3117 add_psymbol_to_list (namestring, p - namestring,
3118 VAR_NAMESPACE, LOC_BLOCK,
3119 &objfile->static_psymbols,
3121 psymtab_language, objfile);
3124 /* Global functions were ignored here, but now they
3125 are put into the global psymtab like one would expect.
3126 They're also in the minimal symbol table. */
3130 int name_len = p - namestring;
3131 char *name = xmalloc (name_len + 1);
3132 memcpy (name, namestring, name_len);
3133 name[name_len] = '\0';
3134 function_outside_compilation_unit_complaint (name);
3137 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3138 add_psymbol_to_list (namestring, p - namestring,
3139 VAR_NAMESPACE, LOC_BLOCK,
3140 &objfile->global_psymbols,
3142 psymtab_language, objfile);
3145 /* Two things show up here (hopefully); static symbols of
3146 local scope (static used inside braces) or extensions
3147 of structure symbols. We can ignore both. */
3161 case '#': /* for symbol identification (used in live ranges) */
3162 /* added to support cfront stabs strings */
3163 case 'Z': /* for definition continuations */
3164 case 'P': /* for prototypes */
3168 /* It is a C++ nested symbol. We don't need to record it
3169 (I don't think); if we try to look up foo::bar::baz,
3170 then symbols for the symtab containing foo should get
3171 read in, I think. */
3172 /* Someone says sun cc puts out symbols like
3173 /foo/baz/maclib::/usr/local/bin/maclib,
3174 which would get here with a symbol type of ':'. */
3178 /* Unexpected symbol descriptor. The second and subsequent stabs
3179 of a continued stab can show up here. The question is
3180 whether they ever can mimic a normal stab--it would be
3181 nice if not, since we certainly don't want to spend the
3182 time searching to the end of every string looking for
3185 complaint (&symfile_complaints,
3186 "unknown symbol descriptor `%c'", p[1]);
3188 /* Ignore it; perhaps it is an extension that we don't
3197 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3198 /* Solaris 2 end of module, finish current partial
3199 symbol table. END_PSYMTAB will set
3200 pst->texthigh to the proper value, which is
3201 necessary if a module compiled without
3202 debugging info follows this module. */
3205 pst = (struct partial_symtab *) 0;
3207 dependencies_used = 0;
3213 if (sh.value > save_pst->texthigh)
3214 save_pst->texthigh = sh.value;
3219 case N_SSYM: /* Claim: Structure or union element.
3220 Hopefully, I can ignore this. */
3221 case N_ENTRY: /* Alternate entry point; can ignore. */
3222 case N_MAIN: /* Can definitely ignore this. */
3223 case N_CATCH: /* These are GNU C++ extensions */
3224 case N_EHDECL: /* that can safely be ignored here. */
3234 case N_NSYMS: /* Ultrix 4.0: symbol count */
3235 case N_DEFD: /* GNU Modula-2 */
3236 case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
3238 case N_OBJ: /* useless types from Solaris */
3240 /* These symbols aren't interesting; don't worry about them */
3245 /* If we haven't found it yet, ignore it. It's probably some
3246 new type we don't know about yet. */
3247 complaint (&symfile_complaints, "unknown symbol type %s",
3248 local_hex_string (type_code)); /*CUR_SYMBOL_TYPE*/
3252 && stabstring != debug_info->ss + fh->issBase + sh.iss)
3255 /* end - Handle continuation */
3260 for (cur_sdx = 0; cur_sdx < fh->csym;)
3263 enum address_class class;
3265 (*swap_sym_in) (cur_bfd,
3266 ((char *) debug_info->external_sym
3267 + ((fh->isymBase + cur_sdx)
3268 * external_sym_size)),
3271 if (ECOFF_IS_STAB (&sh))
3277 /* Non absolute static symbols go into the minimal table. */
3278 if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil
3279 || (sh.index == indexNil
3280 && (sh.st != stStatic || sh.sc == scAbs)))
3282 /* FIXME, premature? */
3287 name = debug_info->ss + fh->issBase + sh.iss;
3293 /* The value of a stEnd symbol is the displacement from the
3294 corresponding start symbol value, do not relocate it. */
3296 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3303 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3307 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
3318 prim_record_minimal_symbol_and_info (name, sh.value,
3319 mst_file_text, NULL,
3320 SECT_OFF_TEXT (objfile), NULL,
3326 /* Usually there is a local and a global stProc symbol
3327 for a function. This means that the function name
3328 has already been entered into the mimimal symbol table
3329 while processing the global symbols in pass 2 above.
3330 One notable exception is the PROGRAM name from
3331 f77 compiled executables, it is only put out as
3332 local stProc symbol, and a global MAIN__ stProc symbol
3333 points to it. It doesn't matter though, as gdb is
3334 still able to find the PROGRAM name via the partial
3335 symbol table, and the MAIN__ symbol via the minimal
3337 if (sh.st == stProc)
3338 add_psymbol_to_list (name, strlen (name),
3339 VAR_NAMESPACE, LOC_BLOCK,
3340 &objfile->global_psymbols,
3341 0, sh.value, psymtab_language, objfile);
3343 add_psymbol_to_list (name, strlen (name),
3344 VAR_NAMESPACE, LOC_BLOCK,
3345 &objfile->static_psymbols,
3346 0, sh.value, psymtab_language, objfile);
3348 /* Skip over procedure to next one. */
3349 if (sh.index >= hdr->iauxMax)
3351 /* Should not happen, but does when cross-compiling
3352 with the MIPS compiler. FIXME -- pull later. */
3353 index_complaint (name);
3354 new_sdx = cur_sdx + 1; /* Don't skip at all */
3357 new_sdx = AUX_GET_ISYM (fh->fBigendian,
3358 (debug_info->external_aux
3361 procaddr = sh.value;
3363 if (new_sdx <= cur_sdx)
3365 /* This should not happen either... FIXME. */
3366 complaint (&symfile_complaints,
3367 "bad proc end in aux found from symbol %s",
3369 new_sdx = cur_sdx + 1; /* Don't skip backward */
3373 (*swap_sym_in) (cur_bfd,
3374 ((char *) debug_info->external_sym
3375 + ((fh->isymBase + cur_sdx - 1)
3376 * external_sym_size)),
3381 /* Kludge for Irix 5.2 zero fh->adr. */
3383 && (pst->textlow == 0 || procaddr < pst->textlow))
3384 pst->textlow = procaddr;
3386 high = procaddr + sh.value;
3387 if (high > pst->texthigh)
3388 pst->texthigh = high;
3391 case stStatic: /* Variable */
3392 if (SC_IS_DATA (sh.sc))
3393 prim_record_minimal_symbol_and_info (name, sh.value,
3394 mst_file_data, NULL,
3395 SECT_OFF_DATA (objfile),
3399 prim_record_minimal_symbol_and_info (name, sh.value,
3401 SECT_OFF_BSS (objfile),
3407 case stIndirect: /* Irix5 forward declaration */
3408 /* Skip forward declarations from Irix5 cc */
3411 case stTypedef: /* Typedef */
3412 /* Skip typedefs for forward declarations and opaque
3413 structs from alpha and mips cc. */
3414 if (sh.iss == 0 || has_opaque_xref (fh, &sh))
3416 class = LOC_TYPEDEF;
3419 case stConstant: /* Constant decl */
3426 case stBlock: /* { }, str, un, enum */
3427 /* Do not create a partial symbol for cc unnamed aggregates
3428 and gcc empty aggregates. */
3429 if ((sh.sc == scInfo
3430 || SC_IS_COMMON (sh.sc))
3432 && sh.index != cur_sdx + 2)
3434 add_psymbol_to_list (name, strlen (name),
3435 STRUCT_NAMESPACE, LOC_TYPEDEF,
3436 &objfile->static_psymbols,
3438 psymtab_language, objfile);
3440 handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);
3442 /* Skip over the block */
3444 if (new_sdx <= cur_sdx)
3446 /* This happens with the Ultrix kernel. */
3447 complaint (&symfile_complaints,
3448 "bad aux index at block symbol %s", name);
3449 new_sdx = cur_sdx + 1; /* Don't skip backward */
3454 case stFile: /* File headers */
3455 case stLabel: /* Labels */
3456 case stEnd: /* Ends of files */
3459 case stLocal: /* Local variables */
3460 /* Normally these are skipped because we skip over
3461 all blocks we see. However, these can occur
3462 as visible symbols in a .h file that contains code. */
3466 /* Both complaints are valid: one gives symbol name,
3467 the other the offending symbol type. */
3468 complaint (&symfile_complaints, "unknown local symbol %s",
3470 complaint (&symfile_complaints, "with type %d", sh.st);
3474 /* Use this gdb symbol */
3475 add_psymbol_to_list (name, strlen (name),
3476 VAR_NAMESPACE, class,
3477 &objfile->static_psymbols,
3478 0, sh.value, psymtab_language, objfile);
3480 cur_sdx++; /* Go to next file symbol */
3483 /* Now do enter the external symbols. */
3484 ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
3485 cur_sdx = fdr_to_pst[f_idx].n_globals;
3486 PST_PRIVATE (save_pst)->extern_count = cur_sdx;
3487 PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
3488 for (; --cur_sdx >= 0; ext_ptr++)
3490 enum address_class class;
3495 if (ext_ptr->ifd != f_idx)
3496 internal_error (__FILE__, __LINE__, "failed internal consistency check");
3497 psh = &ext_ptr->asym;
3499 /* Do not add undefined symbols to the partial symbol table. */
3500 if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil)
3503 svalue = psh->value;
3508 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3515 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3519 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
3526 /* These are generated for static symbols in .o files,
3531 /* External procedure symbols have been entered
3532 into the minimal symbol table in pass 2 above.
3533 Ignore them, as parse_external will ignore them too. */
3539 unknown_ext_complaint (debug_info->ssext + psh->iss);
3540 /* Fall through, pretend it's global. */
3542 /* Global common symbols are resolved by the runtime loader,
3544 if (SC_IS_COMMON (psh->sc))
3550 name = debug_info->ssext + psh->iss;
3551 add_psymbol_to_list (name, strlen (name),
3552 VAR_NAMESPACE, class,
3553 &objfile->global_psymbols,
3555 psymtab_language, objfile);
3559 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3560 empty and put on the free list. */
3561 fdr_to_pst[f_idx].pst = end_psymtab (save_pst,
3562 psymtab_include_list, includes_used,
3563 -1, save_pst->texthigh,
3564 dependency_list, dependencies_used, textlow_not_set);
3566 dependencies_used = 0;
3568 if (objfile->ei.entry_point >= save_pst->textlow &&
3569 objfile->ei.entry_point < save_pst->texthigh)
3571 objfile->ei.entry_file_lowpc = save_pst->textlow;
3572 objfile->ei.entry_file_highpc = save_pst->texthigh;
3575 /* The objfile has its functions reordered if this partial symbol
3576 table overlaps any other partial symbol table.
3577 We cannot assume a reordered objfile if a partial symbol table
3578 is contained within another partial symbol table, as partial symbol
3579 tables for include files with executable code are contained
3580 within the partial symbol table for the including source file,
3581 and we do not want to flag the objfile reordered for these cases.
3583 This strategy works well for Irix-5.2 shared libraries, but we
3584 might have to use a more elaborate (and slower) algorithm for
3586 save_pst = fdr_to_pst[f_idx].pst;
3587 if (save_pst != NULL
3588 && save_pst->textlow != 0
3589 && !(objfile->flags & OBJF_REORDERED))
3591 ALL_OBJFILE_PSYMTABS (objfile, pst)
3594 && save_pst->textlow >= pst->textlow
3595 && save_pst->textlow < pst->texthigh
3596 && save_pst->texthigh > pst->texthigh)
3598 objfile->flags |= OBJF_REORDERED;
3605 /* Now scan the FDRs for dependencies */
3606 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
3608 fh = f_idx + debug_info->fdr;
3609 pst = fdr_to_pst[f_idx].pst;
3611 if (pst == (struct partial_symtab *) NULL)
3614 /* This should catch stabs-in-ecoff. */
3618 /* Skip the first file indirect entry as it is a self dependency
3619 for source files or a reverse .h -> .c dependency for header files. */
3620 pst->number_of_dependencies = 0;
3622 ((struct partial_symtab **)
3623 obstack_alloc (&objfile->psymbol_obstack,
3625 * sizeof (struct partial_symtab *))));
3626 for (s_idx = 1; s_idx < fh->crfd; s_idx++)
3630 (*swap_rfd_in) (cur_bfd,
3631 ((char *) debug_info->external_rfd
3632 + (fh->rfdBase + s_idx) * external_rfd_size),
3634 if (rh < 0 || rh >= hdr->ifdMax)
3636 complaint (&symfile_complaints, "bad file number %ld", rh);
3640 /* Skip self dependencies of header files. */
3644 /* Do not add to dependeny list if psymtab was empty. */
3645 if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL)
3647 pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;
3651 /* Remove the dummy psymtab created for -O3 images above, if it is
3652 still empty, to enable the detection of stripped executables. */
3653 if (objfile->psymtabs->next == NULL
3654 && objfile->psymtabs->number_of_dependencies == 0
3655 && objfile->psymtabs->n_global_syms == 0
3656 && objfile->psymtabs->n_static_syms == 0)
3657 objfile->psymtabs = NULL;
3658 do_cleanups (old_chain);
3661 /* If the current psymbol has an enumerated type, we need to add
3662 all the the enum constants to the partial symbol table. */
3665 handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype,
3668 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
3669 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
3670 char *ext_sym = ((char *) debug_info->external_sym
3671 + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
3681 /* It is an enumerated type if the next symbol entry is a stMember
3682 and its auxiliary index is indexNil or its auxiliary entry
3683 is a plain btNil or btVoid.
3684 Alpha cc -migrate enums are recognized by a zero index and
3685 a zero symbol value.
3686 DU 4.0 cc enums are recognized by a member type of btEnum without
3687 qualifiers and a zero symbol value. */
3688 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3689 if (sh.st != stMember)
3692 if (sh.index == indexNil
3693 || (sh.index == 0 && svalue == 0))
3695 (*debug_swap->swap_tir_in) (fh->fBigendian,
3696 &(debug_info->external_aux
3697 + fh->iauxBase + sh.index)->a_ti,
3699 if ((tir.bt != btNil
3701 && (tir.bt != btEnum || svalue != 0))
3702 || tir.tq0 != tqNil)
3714 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3715 if (sh.st != stMember)
3717 name = debug_info->ss + cur_fdr->issBase + sh.iss;
3719 /* Note that the value doesn't matter for enum constants
3720 in psymtabs, just in symtabs. */
3721 add_psymbol_to_list (name, strlen (name),
3722 VAR_NAMESPACE, LOC_CONST,
3723 &objfile->static_psymbols, 0,
3724 (CORE_ADDR) 0, psymtab_language, objfile);
3725 ext_sym += external_sym_size;
3729 /* Get the next symbol. OBJFILE is unused. */
3732 mdebug_next_symbol_text (struct objfile *objfile)
3737 (*debug_swap->swap_sym_in) (cur_bfd,
3738 ((char *) debug_info->external_sym
3739 + ((cur_fdr->isymBase + cur_sdx)
3740 * debug_swap->external_sym_size)),
3742 return debug_info->ss + cur_fdr->issBase + sh.iss;
3745 /* Ancillary function to psymtab_to_symtab(). Does all the work
3746 for turning the partial symtab PST into a symtab, recurring
3747 first on all dependent psymtabs. The argument FILENAME is
3748 only passed so we can see in debug stack traces what file
3751 This function has a split personality, based on whether the
3752 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3753 The flow of control and even the memory allocation differs. FIXME. */
3756 psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename)
3758 bfd_size_type external_sym_size;
3759 bfd_size_type external_pdr_size;
3760 void (*swap_sym_in) (bfd *, void *, SYMR *);
3761 void (*swap_pdr_in) (bfd *, void *, PDR *);
3763 struct symtab *st = NULL;
3765 struct linetable *lines;
3766 CORE_ADDR lowest_pdr_addr = 0;
3767 int last_symtab_ended = 0;
3773 /* Read in all partial symbtabs on which this one is dependent.
3774 NOTE that we do have circular dependencies, sigh. We solved
3775 that by setting pst->readin before this point. */
3777 for (i = 0; i < pst->number_of_dependencies; i++)
3778 if (!pst->dependencies[i]->readin)
3780 /* Inform about additional files to be read in. */
3783 fputs_filtered (" ", gdb_stdout);
3785 fputs_filtered ("and ", gdb_stdout);
3787 printf_filtered ("%s...",
3788 pst->dependencies[i]->filename);
3789 wrap_here (""); /* Flush output */
3790 gdb_flush (gdb_stdout);
3792 /* We only pass the filename for debug purposes */
3793 psymtab_to_symtab_1 (pst->dependencies[i],
3794 pst->dependencies[i]->filename);
3797 /* Do nothing if this is a dummy psymtab. */
3799 if (pst->n_global_syms == 0 && pst->n_static_syms == 0
3800 && pst->textlow == 0 && pst->texthigh == 0)
3803 /* Now read the symbols for this symtab */
3805 cur_bfd = CUR_BFD (pst);
3806 debug_swap = DEBUG_SWAP (pst);
3807 debug_info = DEBUG_INFO (pst);
3808 pending_list = PENDING_LIST (pst);
3809 external_sym_size = debug_swap->external_sym_size;
3810 external_pdr_size = debug_swap->external_pdr_size;
3811 swap_sym_in = debug_swap->swap_sym_in;
3812 swap_pdr_in = debug_swap->swap_pdr_in;
3813 current_objfile = pst->objfile;
3814 cur_fd = FDR_IDX (pst);
3815 fh = ((cur_fd == -1)
3817 : debug_info->fdr + cur_fd);
3820 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3821 processing_gcc_compilation = 0;
3822 if (fh != (FDR *) NULL && fh->csym >= 2)
3826 (*swap_sym_in) (cur_bfd,
3827 ((char *) debug_info->external_sym
3828 + (fh->isymBase + 1) * external_sym_size),
3830 if (STREQ (debug_info->ss + fh->issBase + sh.iss,
3833 /* We indicate that this is a GCC compilation so that certain
3834 features will be enabled in stabsread/dbxread. */
3835 processing_gcc_compilation = 2;
3839 if (processing_gcc_compilation != 0)
3842 /* This symbol table contains stabs-in-ecoff entries. */
3844 /* Parse local symbols first */
3846 if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
3848 current_objfile = NULL;
3851 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
3857 (*swap_sym_in) (cur_bfd,
3858 (((char *) debug_info->external_sym)
3859 + (fh->isymBase + cur_sdx) * external_sym_size),
3861 name = debug_info->ss + fh->issBase + sh.iss;
3863 /* XXX This is a hack. It will go away! */
3864 if (ECOFF_IS_STAB (&sh) || (name[0] == '#'))
3866 int type_code = ECOFF_UNMARK_STAB (sh.index);
3868 /* We should never get non N_STAB symbols here, but they
3869 should be harmless, so keep process_one_symbol from
3870 complaining about them. */
3871 if (type_code & N_STAB)
3873 /* If we found a trailing N_SO with no name, process
3874 it here instead of in process_one_symbol, so we
3875 can keep a handle to its symtab. The symtab
3876 would otherwise be ended twice, once in
3877 process_one_symbol, and once after this loop. */
3878 if (type_code == N_SO
3880 && previous_stab_code != (unsigned char) N_SO
3883 valu += ANOFFSET (pst->section_offsets,
3884 SECT_OFF_TEXT (pst->objfile));
3885 previous_stab_code = N_SO;
3886 st = end_symtab (valu, pst->objfile,
3887 SECT_OFF_TEXT (pst->objfile));
3889 last_symtab_ended = 1;
3893 last_symtab_ended = 0;
3894 process_one_symbol (type_code, 0, valu, name,
3895 pst->section_offsets, pst->objfile);
3898 /* Similarly a hack. */
3899 else if (name[0] == '#')
3901 process_one_symbol (N_SLINE, 0, valu, name,
3902 pst->section_offsets, pst->objfile);
3904 if (type_code == N_FUN)
3906 /* Make up special symbol to contain
3907 procedure specific info */
3908 struct mips_extra_func_info *e =
3909 ((struct mips_extra_func_info *)
3910 obstack_alloc (¤t_objfile->symbol_obstack,
3911 sizeof (struct mips_extra_func_info)));
3912 struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);
3914 memset (e, 0, sizeof (struct mips_extra_func_info));
3915 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
3916 SYMBOL_CLASS (s) = LOC_CONST;
3917 SYMBOL_TYPE (s) = mdebug_type_void;
3918 SYMBOL_VALUE (s) = (long) e;
3919 e->pdr.framereg = -1;
3920 add_symbol_to_list (s, &local_symbols);
3923 else if (sh.st == stLabel)
3925 if (sh.index == indexNil)
3927 /* This is what the gcc2_compiled and __gnu_compiled_*
3928 show up as. So don't complain. */
3933 /* Handle encoded stab line number. */
3934 valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile));
3935 record_line (current_subfile, sh.index, valu);
3938 else if (sh.st == stProc || sh.st == stStaticProc
3939 || sh.st == stStatic || sh.st == stEnd)
3940 /* These are generated by gcc-2.x, do not complain */
3943 complaint (&symfile_complaints, "unknown stabs symbol %s", name);
3946 if (! last_symtab_ended)
3948 st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT (pst->objfile));
3952 /* Sort the symbol table now, we are done adding symbols to it.
3953 We must do this before parse_procedure calls lookup_symbol. */
3954 sort_symtab_syms (st);
3956 /* There used to be a call to sort_blocks here, but this should not
3957 be necessary for stabs symtabs. And as sort_blocks modifies the
3958 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3959 it did the wrong thing if the first procedure in a file was
3960 generated via asm statements. */
3962 /* Fill in procedure info next. */
3966 struct cleanup *old_chain;
3972 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
3973 old_chain = make_cleanup (xfree, pr_block);
3975 pdr_ptr = ((char *) debug_info->external_pdr
3976 + fh->ipdFirst * external_pdr_size);
3977 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
3981 pdr_ptr += external_pdr_size, pdr_in++)
3983 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
3985 /* Determine lowest PDR address, the PDRs are not always
3987 if (pdr_in == pr_block)
3988 lowest_pdr_addr = pdr_in->adr;
3989 else if (pdr_in->adr < lowest_pdr_addr)
3990 lowest_pdr_addr = pdr_in->adr;
3994 pdr_in_end = pdr_in + fh->cpd;
3995 for (; pdr_in < pdr_in_end; pdr_in++)
3996 parse_procedure (pdr_in, st, pst);
3998 do_cleanups (old_chain);
4003 /* This symbol table contains ordinary ecoff entries. */
4009 /* How many symbols will we need */
4010 /* FIXME, this does not count enum values. */
4011 f_max = pst->n_global_syms + pst->n_static_syms;
4015 st = new_symtab ("unknown", f_max, 0, pst->objfile);
4019 f_max += fh->csym + fh->cpd;
4020 maxlines = 2 * fh->cline;
4021 st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);
4023 /* The proper language was already determined when building
4024 the psymtab, use it. */
4025 st->language = PST_PRIVATE (pst)->pst_language;
4028 psymtab_language = st->language;
4030 lines = LINETABLE (st);
4032 /* Get a new lexical context */
4034 push_parse_stack ();
4035 top_stack->cur_st = st;
4036 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),
4038 BLOCK_START (top_stack->cur_block) = pst->textlow;
4039 BLOCK_END (top_stack->cur_block) = 0;
4040 top_stack->blocktype = stFile;
4041 top_stack->maxsyms = 2 * f_max;
4042 top_stack->cur_type = 0;
4043 top_stack->procadr = 0;
4044 top_stack->numargs = 0;
4045 found_ecoff_debugging_info = 0;
4052 /* Parse local symbols first */
4053 sym_ptr = ((char *) debug_info->external_sym
4054 + fh->isymBase * external_sym_size);
4055 sym_end = sym_ptr + fh->csym * external_sym_size;
4056 while (sym_ptr < sym_end)
4061 (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
4062 c = parse_symbol (&sh,
4063 debug_info->external_aux + fh->iauxBase,
4064 sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
4065 sym_ptr += c * external_sym_size;
4068 /* Linenumbers. At the end, check if we can save memory.
4069 parse_lines has to look ahead an arbitrary number of PDR
4070 structures, so we swap them all first. */
4074 struct cleanup *old_chain;
4080 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
4082 old_chain = make_cleanup (xfree, pr_block);
4084 pdr_ptr = ((char *) debug_info->external_pdr
4085 + fh->ipdFirst * external_pdr_size);
4086 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
4090 pdr_ptr += external_pdr_size, pdr_in++)
4092 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
4094 /* Determine lowest PDR address, the PDRs are not always
4096 if (pdr_in == pr_block)
4097 lowest_pdr_addr = pdr_in->adr;
4098 else if (pdr_in->adr < lowest_pdr_addr)
4099 lowest_pdr_addr = pdr_in->adr;
4102 parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr);
4103 if (lines->nitems < fh->cline)
4104 lines = shrink_linetable (lines);
4106 /* Fill in procedure info next. */
4108 pdr_in_end = pdr_in + fh->cpd;
4109 for (; pdr_in < pdr_in_end; pdr_in++)
4110 parse_procedure (pdr_in, 0, pst);
4112 do_cleanups (old_chain);
4116 LINETABLE (st) = lines;
4118 /* .. and our share of externals.
4119 XXX use the global list to speed up things here. how?
4120 FIXME, Maybe quit once we have found the right number of ext's? */
4121 top_stack->cur_st = st;
4122 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
4124 top_stack->blocktype = stFile;
4126 = (debug_info->symbolic_header.isymMax
4127 + debug_info->symbolic_header.ipdMax
4128 + debug_info->symbolic_header.iextMax);
4130 ext_ptr = PST_PRIVATE (pst)->extern_tab;
4131 for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
4132 parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
4134 /* If there are undefined symbols, tell the user.
4135 The alpha has an undefined symbol for every symbol that is
4136 from a shared library, so tell the user only if verbose is on. */
4137 if (info_verbose && n_undef_symbols)
4139 printf_filtered ("File %s contains %d unresolved references:",
4140 st->filename, n_undef_symbols);
4141 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4142 n_undef_vars, n_undef_procs, n_undef_labels);
4143 n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
4150 /* Sort the symbol table now, we are done adding symbols to it. */
4151 sort_symtab_syms (st);
4156 /* Now link the psymtab and the symtab. */
4159 current_objfile = NULL;
4162 /* Ancillary parsing procedures. */
4164 /* Return 1 if the symbol pointed to by SH has a cross reference
4165 to an opaque aggregate type, else 0. */
4168 has_opaque_xref (FDR *fh, SYMR *sh)
4175 if (sh->index == indexNil)
4178 ax = debug_info->external_aux + fh->iauxBase + sh->index;
4179 (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
4180 if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
4184 (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
4185 if (rn->rfd == 0xfff)
4186 rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
4194 /* Lookup the type at relative index RN. Return it in TPP
4195 if found and in any event come up with its name PNAME.
4196 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4197 Return value says how many aux symbols we ate. */
4200 cross_ref (int fd, union aux_ext *ax, struct type **tpp, enum type_code type_code, /* Use to alloc new type if none is found. */
4201 char **pname, int bigend, char *sym_name)
4210 struct mdebug_pending *pend;
4212 *tpp = (struct type *) NULL;
4214 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
4216 /* Escape index means 'the next one' */
4217 if (rn->rfd == 0xfff)
4220 rf = AUX_GET_ISYM (bigend, ax + 1);
4227 /* mips cc uses a rf of -1 for opaque struct definitions.
4228 Set TYPE_FLAG_STUB for these types so that check_typedef will
4229 resolve them if the struct gets defined in another compilation unit. */
4232 *pname = "<undefined>";
4233 *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile);
4237 /* mips cc uses an escaped rn->index of 0 for struct return types
4238 of procedures that were compiled without -g. These will always remain
4240 if (rn->rfd == 0xfff && rn->index == 0)
4242 *pname = "<undefined>";
4246 /* Find the relative file descriptor and the symbol in it. */
4247 fh = get_rfd (fd, rf);
4248 xref_fd = fh - debug_info->fdr;
4250 if (rn->index >= fh->csym)
4252 /* File indirect entry is corrupt. */
4253 *pname = "<illegal>";
4254 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4258 /* If we have processed this symbol then we left a forwarding
4259 pointer to the type in the pending list. If not, we`ll put
4260 it in a list of pending types, to be processed later when
4261 the file will be. In any event, we collect the name for the
4264 esh = ((char *) debug_info->external_sym
4265 + ((fh->isymBase + rn->index)
4266 * debug_swap->external_sym_size));
4267 (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
4269 /* Make sure that this type of cross reference can be handled. */
4270 if ((sh.sc != scInfo
4271 || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
4272 && sh.st != stStruct && sh.st != stUnion
4273 && sh.st != stEnum))
4274 && (sh.st != stBlock || !SC_IS_COMMON (sh.sc)))
4276 /* File indirect entry is corrupt. */
4277 *pname = "<illegal>";
4278 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4282 *pname = debug_info->ss + fh->issBase + sh.iss;
4284 pend = is_pending_symbol (fh, esh);
4289 /* We have not yet seen this type. */
4291 if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
4295 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4297 a) forward declarations of structs/unions/enums which are not
4298 defined in this compilation unit.
4299 For these the type will be void. This is a bad design decision
4300 as cross referencing across compilation units is impossible
4301 due to the missing name.
4302 b) forward declarations of structs/unions/enums/typedefs which
4303 are defined later in this file or in another file in the same
4304 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4305 Simply cross reference those again to get the true type.
4306 The forward references are not entered in the pending list and
4307 in the symbol table. */
4309 (*debug_swap->swap_tir_in) (bigend,
4310 &(debug_info->external_aux
4311 + fh->iauxBase + sh.index)->a_ti,
4313 if (tir.tq0 != tqNil)
4314 complaint (&symfile_complaints,
4315 "illegal tq0 in forward typedef for %s", sym_name);
4319 *tpp = init_type (type_code, 0, 0, (char *) NULL,
4321 *pname = "<undefined>";
4328 (debug_info->external_aux
4329 + fh->iauxBase + sh.index + 1),
4330 tpp, type_code, pname,
4331 fh->fBigendian, sym_name);
4335 /* Follow a forward typedef. This might recursively
4336 call cross_ref till we get a non typedef'ed type.
4337 FIXME: This is not correct behaviour, but gdb currently
4338 cannot handle typedefs without type copying. Type
4339 copying is impossible as we might have mutual forward
4340 references between two files and the copied type would not
4341 get filled in when we later parse its definition. */
4342 *tpp = parse_type (xref_fd,
4343 debug_info->external_aux + fh->iauxBase,
4347 debug_info->ss + fh->issBase + sh.iss);
4348 add_pending (fh, esh, *tpp);
4352 complaint (&symfile_complaints,
4353 "illegal bt %d in forward typedef for %s", tir.bt,
4355 *tpp = init_type (type_code, 0, 0, (char *) NULL,
4361 else if (sh.st == stTypedef)
4363 /* Parse the type for a normal typedef. This might recursively call
4364 cross_ref till we get a non typedef'ed type.
4365 FIXME: This is not correct behaviour, but gdb currently
4366 cannot handle typedefs without type copying. But type copying is
4367 impossible as we might have mutual forward references between
4368 two files and the copied type would not get filled in when
4369 we later parse its definition. */
4370 *tpp = parse_type (xref_fd,
4371 debug_info->external_aux + fh->iauxBase,
4375 debug_info->ss + fh->issBase + sh.iss);
4379 /* Cross reference to a struct/union/enum which is defined
4380 in another file in the same compilation unit but that file
4381 has not been parsed yet.
4382 Initialize the type only, it will be filled in when
4383 it's definition is parsed. */
4384 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
4386 add_pending (fh, esh, *tpp);
4389 /* We used one auxent normally, two if we got a "next one" rf. */
4394 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4395 keeping the symtab sorted */
4397 static struct symbol *
4398 mylookup_symbol (char *name, register struct block *block,
4399 namespace_enum namespace, enum address_class class)
4405 ALL_BLOCK_SYMBOLS (block, i, sym)
4407 if (SYMBOL_NAME (sym)[0] == inc
4408 && SYMBOL_NAMESPACE (sym) == namespace
4409 && SYMBOL_CLASS (sym) == class
4410 && strcmp (SYMBOL_NAME (sym), name) == 0)
4414 block = BLOCK_SUPERBLOCK (block);
4416 return mylookup_symbol (name, block, namespace, class);
4421 /* Add a new symbol S to a block B.
4422 Infrequently, we will need to reallocate the block to make it bigger.
4423 We only detect this case when adding to top_stack->cur_block, since
4424 that's the only time we know how big the block is. FIXME. */
4427 add_symbol (struct symbol *s, struct block *b)
4429 int nsyms = BLOCK_NSYMS (b)++;
4430 struct block *origb;
4431 struct parse_stack *stackp;
4433 if (b == top_stack->cur_block &&
4434 nsyms >= top_stack->maxsyms)
4436 complaint (&symfile_complaints, "block containing %s overfilled",
4438 /* In this case shrink_block is actually grow_block, since
4439 BLOCK_NSYMS(b) is larger than its current size. */
4441 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
4443 /* Now run through the stack replacing pointers to the
4444 original block. shrink_block has already done this
4445 for the blockvector and BLOCK_FUNCTION. */
4446 for (stackp = top_stack; stackp; stackp = stackp->next)
4448 if (stackp->cur_block == origb)
4450 stackp->cur_block = b;
4451 stackp->maxsyms = BLOCK_NSYMS (b);
4455 BLOCK_SYM (b, nsyms) = s;
4458 /* Add a new block B to a symtab S */
4461 add_block (struct block *b, struct symtab *s)
4463 struct blockvector *bv = BLOCKVECTOR (s);
4465 bv = (struct blockvector *) xrealloc ((void *) bv,
4466 (sizeof (struct blockvector)
4467 + BLOCKVECTOR_NBLOCKS (bv)
4468 * sizeof (bv->block)));
4469 if (bv != BLOCKVECTOR (s))
4470 BLOCKVECTOR (s) = bv;
4472 BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
4475 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4476 MIPS' linenumber encoding might need more than one byte
4477 to describe it, LAST is used to detect these continuation lines.
4479 Combining lines with the same line number seems like a bad idea.
4480 E.g: There could be a line number entry with the same line number after the
4481 prologue and GDB should not ignore it (this is a better way to find
4482 a prologue than mips_skip_prologue).
4483 But due to the compressed line table format there are line number entries
4484 for the same line which are needed to bridge the gap to the next
4485 line number entry. These entries have a bogus address info with them
4486 and we are unable to tell them from intended duplicate line number
4488 This is another reason why -ggdb debugging format is preferable. */
4491 add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last)
4493 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4494 Change them to something sensible. */
4498 last = -2; /* make sure we record first line */
4500 if (last == lineno) /* skip continuation lines */
4503 lt->item[lt->nitems].line = lineno;
4504 lt->item[lt->nitems++].pc = adr << 2;
4508 /* Sorting and reordering procedures */
4510 /* Blocks with a smaller low bound should come first */
4513 compare_blocks (const void *arg1, const void *arg2)
4515 register int addr_diff;
4516 struct block **b1 = (struct block **) arg1;
4517 struct block **b2 = (struct block **) arg2;
4519 addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
4521 return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
4525 /* Sort the blocks of a symtab S.
4526 Reorder the blocks in the blockvector by code-address,
4527 as required by some MI search routines */
4530 sort_blocks (struct symtab *s)
4532 struct blockvector *bv = BLOCKVECTOR (s);
4534 if (BLOCKVECTOR_NBLOCKS (bv) <= 2)
4537 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
4538 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
4539 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
4540 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
4544 * This is very unfortunate: normally all functions are compiled in
4545 * the order they are found, but if the file is compiled -O3 things
4546 * are very different. It would be nice to find a reliable test
4547 * to detect -O3 images in advance.
4549 if (BLOCKVECTOR_NBLOCKS (bv) > 3)
4550 qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
4551 BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
4552 sizeof (struct block *),
4556 register CORE_ADDR high = 0;
4557 register int i, j = BLOCKVECTOR_NBLOCKS (bv);
4559 for (i = FIRST_LOCAL_BLOCK; i < j; i++)
4560 if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
4561 high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
4562 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
4565 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
4566 BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
4568 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4569 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4570 BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4571 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4575 /* Constructor/restructor/destructor procedures */
4577 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4578 MAXSYMS and linenumbers MAXLINES we'll put in it */
4580 static struct symtab *
4581 new_symtab (char *name, int maxsyms, int maxlines, struct objfile *objfile)
4583 struct symtab *s = allocate_symtab (name, objfile);
4585 LINETABLE (s) = new_linetable (maxlines);
4587 /* All symtabs must have at least two blocks */
4588 BLOCKVECTOR (s) = new_bvect (2);
4589 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);
4590 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);
4591 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =
4592 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
4594 s->free_code = free_linetable;
4595 s->debugformat = obsavestring ("ECOFF", 5,
4596 &objfile->symbol_obstack);
4600 /* Allocate a new partial_symtab NAME */
4602 static struct partial_symtab *
4603 new_psymtab (char *name, struct objfile *objfile)
4605 struct partial_symtab *psymtab;
4607 psymtab = allocate_psymtab (name, objfile);
4608 psymtab->section_offsets = objfile->section_offsets;
4610 /* Keep a backpointer to the file's symbols */
4612 psymtab->read_symtab_private = ((char *)
4613 obstack_alloc (&objfile->psymbol_obstack,
4614 sizeof (struct symloc)));
4615 memset (psymtab->read_symtab_private, 0, sizeof (struct symloc));
4616 CUR_BFD (psymtab) = cur_bfd;
4617 DEBUG_SWAP (psymtab) = debug_swap;
4618 DEBUG_INFO (psymtab) = debug_info;
4619 PENDING_LIST (psymtab) = pending_list;
4621 /* The way to turn this into a symtab is to call... */
4622 psymtab->read_symtab = mdebug_psymtab_to_symtab;
4627 /* Allocate a linetable array of the given SIZE. Since the struct
4628 already includes one item, we subtract one when calculating the
4629 proper size to allocate. */
4631 static struct linetable *
4632 new_linetable (int size)
4634 struct linetable *l;
4636 size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);
4637 l = (struct linetable *) xmalloc (size);
4642 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4643 I am not so sure about the 3.4 ones.
4645 Since the struct linetable already includes one item, we subtract one when
4646 calculating the proper size to allocate. */
4648 static struct linetable *
4649 shrink_linetable (struct linetable *lt)
4652 return (struct linetable *) xrealloc ((void *) lt,
4653 (sizeof (struct linetable)
4655 * sizeof (lt->item))));
4658 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4660 static struct blockvector *
4661 new_bvect (int nblocks)
4663 struct blockvector *bv;
4666 size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
4667 bv = (struct blockvector *) xzalloc (size);
4669 BLOCKVECTOR_NBLOCKS (bv) = nblocks;
4674 /* Allocate and zero a new block of MAXSYMS symbols */
4676 static struct block *
4677 new_block (int maxsyms)
4679 int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
4681 return (struct block *) xzalloc (size);
4684 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4685 Shrink_block can also be used by add_symbol to grow a block. */
4687 static struct block *
4688 shrink_block (struct block *b, struct symtab *s)
4691 struct blockvector *bv = BLOCKVECTOR (s);
4694 /* Just reallocate it and fix references to the old one */
4696 new = (struct block *) xrealloc ((void *) b,
4697 (sizeof (struct block)
4698 + ((BLOCK_NSYMS (b) - 1)
4699 * sizeof (struct symbol *))));
4701 /* FIXME: Not worth hashing this block as it's built. */
4702 /* All callers should have created the block with new_block (), which
4703 would mean it was not previously hashed. Make sure. */
4704 gdb_assert (BLOCK_HASHTABLE (new) == 0);
4706 /* Should chase pointers to old one. Fortunately, that`s just
4707 the block`s function and inferior blocks */
4708 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
4709 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4710 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
4711 if (BLOCKVECTOR_BLOCK (bv, i) == b)
4712 BLOCKVECTOR_BLOCK (bv, i) = new;
4713 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)
4714 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;
4718 /* Create a new symbol with printname NAME */
4720 static struct symbol *
4721 new_symbol (char *name)
4723 struct symbol *s = ((struct symbol *)
4724 obstack_alloc (¤t_objfile->symbol_obstack,
4725 sizeof (struct symbol)));
4727 memset (s, 0, sizeof (*s));
4728 SYMBOL_NAME (s) = obsavestring (name, strlen (name),
4729 ¤t_objfile->symbol_obstack);
4730 SYMBOL_LANGUAGE (s) = psymtab_language;
4731 SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack);
4735 /* Create a new type with printname NAME */
4737 static struct type *
4738 new_type (char *name)
4742 t = alloc_type (current_objfile);
4743 TYPE_NAME (t) = name;
4744 TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default;
4748 /* Read ECOFF debugging information from a BFD section. This is
4749 called from elfread.c. It parses the section into a
4750 ecoff_debug_info struct, and then lets the rest of the file handle
4754 elfmdebug_build_psymtabs (struct objfile *objfile,
4755 const struct ecoff_debug_swap *swap, asection *sec)
4757 bfd *abfd = objfile->obfd;
4758 struct ecoff_debug_info *info;
4760 info = ((struct ecoff_debug_info *)
4761 obstack_alloc (&objfile->psymbol_obstack,
4762 sizeof (struct ecoff_debug_info)));
4764 if (!(*swap->read_debug_info) (abfd, sec, info))
4765 error ("Error reading ECOFF debugging information: %s",
4766 bfd_errmsg (bfd_get_error ()));
4768 mdebug_build_psymtabs (objfile, swap, info);
4772 /* Things used for calling functions in the inferior.
4773 These functions are exported to our companion
4774 mips-tdep.c file and are here because they play
4775 with the symbol-table explicitly. */
4777 /* Sigtramp: make sure we have all the necessary information
4778 about the signal trampoline code. Since the official code
4779 from MIPS does not do so, we make up that information ourselves.
4780 If they fix the library (unlikely) this code will neutralize itself. */
4782 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4783 here because it calls functions defined in this file, but perhaps
4784 this could be handled in a better way. Only compile it in when
4785 tm-mips.h is included. */
4790 fixup_sigtramp (void)
4794 struct block *b, *b0 = NULL;
4796 sigtramp_address = -1;
4798 /* We have to handle the following cases here:
4799 a) The Mips library has a sigtramp label within sigvec.
4800 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4801 s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
4804 b0 = SYMBOL_BLOCK_VALUE (s);
4805 s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
4809 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4810 s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
4813 /* But maybe this program uses its own version of sigvec */
4817 /* Did we or MIPSco fix the library ? */
4818 if (SYMBOL_CLASS (s) == LOC_BLOCK)
4820 sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
4821 sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
4825 sigtramp_address = SYMBOL_VALUE (s);
4826 sigtramp_end = sigtramp_address + 0x88; /* black magic */
4828 /* But what symtab does it live in ? */
4829 st = find_pc_symtab (SYMBOL_VALUE (s));
4832 * Ok, there goes the fix: turn it into a procedure, with all the
4833 * needed info. Note we make it a nested procedure of sigvec,
4834 * which is the way the (assembly) code is actually written.
4836 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
4837 SYMBOL_CLASS (s) = LOC_BLOCK;
4838 SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
4840 TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void;
4842 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4844 SYMBOL_BLOCK_VALUE (s) = b;
4845 BLOCK_START (b) = sigtramp_address;
4846 BLOCK_END (b) = sigtramp_end;
4847 BLOCK_FUNCTION (b) = s;
4848 BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
4852 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4854 struct mips_extra_func_info *e =
4855 ((struct mips_extra_func_info *)
4856 xzalloc (sizeof (struct mips_extra_func_info)));
4858 e->numargs = 0; /* the kernel thinks otherwise */
4859 e->pdr.frameoffset = 32;
4860 e->pdr.framereg = SP_REGNUM;
4861 /* Note that setting pcreg is no longer strictly necessary as
4862 mips_frame_saved_pc is now aware of signal handler frames. */
4863 e->pdr.pcreg = PC_REGNUM;
4864 e->pdr.regmask = -2;
4865 /* Offset to saved r31, in the sigtramp case the saved registers
4866 are above the frame in the sigcontext.
4867 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4868 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4869 and 32 * 4 bytes for the floating point registers. */
4870 e->pdr.regoffset = 4 + 12 + 31 * 4;
4871 e->pdr.fregmask = -1;
4872 /* Offset to saved f30 (first saved *double* register). */
4873 e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4;
4874 e->pdr.isym = (long) s;
4875 e->pdr.adr = sigtramp_address;
4877 current_objfile = st->objfile; /* Keep new_symbol happy */
4878 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
4879 SYMBOL_VALUE (s) = (long) e;
4880 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
4881 SYMBOL_CLASS (s) = LOC_CONST;
4882 SYMBOL_TYPE (s) = mdebug_type_void;
4883 current_objfile = NULL;
4886 BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s;
4889 #endif /* TM_MIPS_H */
4892 _initialize_mdebugread (void)
4895 init_type (TYPE_CODE_VOID, 1,
4897 "void", (struct objfile *) NULL);
4899 init_type (TYPE_CODE_INT, 1,
4901 "char", (struct objfile *) NULL);
4902 mdebug_type_unsigned_char =
4903 init_type (TYPE_CODE_INT, 1,
4905 "unsigned char", (struct objfile *) NULL);
4907 init_type (TYPE_CODE_INT, 2,
4909 "short", (struct objfile *) NULL);
4910 mdebug_type_unsigned_short =
4911 init_type (TYPE_CODE_INT, 2,
4913 "unsigned short", (struct objfile *) NULL);
4914 mdebug_type_int_32 =
4915 init_type (TYPE_CODE_INT, 4,
4917 "int", (struct objfile *) NULL);
4918 mdebug_type_unsigned_int_32 =
4919 init_type (TYPE_CODE_INT, 4,
4921 "unsigned int", (struct objfile *) NULL);
4922 mdebug_type_int_64 =
4923 init_type (TYPE_CODE_INT, 8,
4925 "int", (struct objfile *) NULL);
4926 mdebug_type_unsigned_int_64 =
4927 init_type (TYPE_CODE_INT, 8,
4929 "unsigned int", (struct objfile *) NULL);
4930 mdebug_type_long_32 =
4931 init_type (TYPE_CODE_INT, 4,
4933 "long", (struct objfile *) NULL);
4934 mdebug_type_unsigned_long_32 =
4935 init_type (TYPE_CODE_INT, 4,
4937 "unsigned long", (struct objfile *) NULL);
4938 mdebug_type_long_64 =
4939 init_type (TYPE_CODE_INT, 8,
4941 "long", (struct objfile *) NULL);
4942 mdebug_type_unsigned_long_64 =
4943 init_type (TYPE_CODE_INT, 8,
4945 "unsigned long", (struct objfile *) NULL);
4946 mdebug_type_long_long_64 =
4947 init_type (TYPE_CODE_INT, 8,
4949 "long long", (struct objfile *) NULL);
4950 mdebug_type_unsigned_long_long_64 =
4951 init_type (TYPE_CODE_INT, 8,
4953 "unsigned long long", (struct objfile *) NULL);
4954 mdebug_type_adr_32 =
4955 init_type (TYPE_CODE_PTR, 4,
4957 "adr_32", (struct objfile *) NULL);
4958 TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void;
4959 mdebug_type_adr_64 =
4960 init_type (TYPE_CODE_PTR, 8,
4962 "adr_64", (struct objfile *) NULL);
4963 TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void;
4965 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4967 "float", (struct objfile *) NULL);
4968 mdebug_type_double =
4969 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4971 "double", (struct objfile *) NULL);
4972 mdebug_type_complex =
4973 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4975 "complex", (struct objfile *) NULL);
4976 TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float;
4977 mdebug_type_double_complex =
4978 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4980 "double complex", (struct objfile *) NULL);
4981 TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double;
4983 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4985 mdebug_type_string =
4986 init_type (TYPE_CODE_STRING,
4987 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4989 (struct objfile *) NULL);
4991 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4992 good? Would we be better off with TYPE_CODE_ERROR? Should
4993 TYPE_CODE_ERROR print things in hex if it knows the size? */
4994 mdebug_type_fixed_dec =
4995 init_type (TYPE_CODE_INT,
4996 TARGET_INT_BIT / TARGET_CHAR_BIT,
4998 (struct objfile *) NULL);
5000 mdebug_type_float_dec =
5001 init_type (TYPE_CODE_ERROR,
5002 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
5003 0, "floating decimal",
5004 (struct objfile *) NULL);
5006 nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0,
5007 "<function, no debug info>", NULL);
5008 TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int;
5009 nodebug_var_symbol_type =
5010 init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0,
5011 "<variable, no debug info>", NULL);