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, 2003
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 /* For stProc symbol records, we need to check the storage class
755 as well, as only (stProc, scText) entries represent "real"
756 procedures - See the Compaq document titled "Object File /
757 Symbol Table Format Specification" for more information.
758 If the storage class is not scText, we discard the whole block
759 of symbol records for this stProc. */
760 if (sh->st == stProc && sh->sc != scText)
762 char *ext_tsym = ext_sh;
763 int keep_counting = 1;
766 while (keep_counting)
768 ext_tsym += external_sym_size;
769 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
779 complaint (&symfile_complaints,
780 "unknown symbol type 0x%x", sh->st);
786 s = new_symbol (name);
787 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
788 SYMBOL_CLASS (s) = LOC_BLOCK;
789 /* Type of the return value */
790 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
794 t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
795 if (STREQ (name, "malloc") && TYPE_CODE (t) == TYPE_CODE_VOID)
797 /* I don't know why, but, at least under Alpha GNU/Linux,
798 when linking against a malloc without debugging
799 symbols, its read as a function returning void---this
800 is bad because it means we cannot call functions with
801 string arguments interactively; i.e., "call
802 printf("howdy\n")" would fail with the error message
803 "program has no memory available". To avoid this, we
804 patch up the type and make it void*
805 instead. (davidm@azstarnet.com)
807 t = make_pointer_type (t, NULL);
810 b = top_stack->cur_block;
811 if (sh->st == stProc)
813 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
814 /* The next test should normally be true, but provides a
815 hook for nested functions (which we don't want to make
817 if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
818 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
819 /* Irix 5 sometimes has duplicate names for the same
820 function. We want to add such names up at the global
821 level, not as a nested function. */
822 else if (sh->value == top_stack->procadr)
823 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
827 /* Make a type for the procedure itself */
828 SYMBOL_TYPE (s) = lookup_function_type (t);
830 /* All functions in C++ have prototypes. For C we don't have enough
831 information in the debug info. */
832 if (SYMBOL_LANGUAGE (s) == language_cplus)
833 TYPE_FLAGS (SYMBOL_TYPE (s)) |= TYPE_FLAG_PROTOTYPED;
835 /* Create and enter a new lexical context */
836 b = new_block (top_stack->maxsyms);
837 SYMBOL_BLOCK_VALUE (s) = b;
838 BLOCK_FUNCTION (b) = s;
839 BLOCK_START (b) = BLOCK_END (b) = sh->value;
840 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
841 add_block (b, top_stack->cur_st);
843 /* Not if we only have partial info */
844 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
848 top_stack->cur_block = b;
849 top_stack->blocktype = sh->st;
850 top_stack->cur_type = SYMBOL_TYPE (s);
851 top_stack->cur_field = -1;
852 top_stack->procadr = sh->value;
853 top_stack->numargs = 0;
856 /* Beginning of code for structure, union, and enum definitions.
857 They all share a common set of local variables, defined here. */
859 enum type_code type_code;
865 case stStruct: /* Start a block defining a struct type */
866 type_code = TYPE_CODE_STRUCT;
867 goto structured_common;
869 case stUnion: /* Start a block defining a union type */
870 type_code = TYPE_CODE_UNION;
871 goto structured_common;
873 case stEnum: /* Start a block defining an enum type */
874 type_code = TYPE_CODE_ENUM;
875 goto structured_common;
877 case stBlock: /* Either a lexical block, or some type */
878 if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc))
879 goto case_stBlock_code; /* Lexical block */
881 type_code = TYPE_CODE_UNDEF; /* We have a type. */
883 /* Common code for handling struct, union, enum, and/or as-yet-
884 unknown-type blocks of info about structured data. `type_code'
885 has been set to the proper TYPE_CODE, if we know it. */
887 found_ecoff_debugging_info = 1;
889 top_stack->blocktype = stBlock;
891 /* First count the number of fields and the highest value. */
894 for (ext_tsym = ext_sh + external_sym_size;
896 ext_tsym += external_sym_size)
900 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
905 /* C++ encodes class types as structures where there the
906 methods are encoded as stProc. The scope of stProc
907 symbols also ends with stEnd, thus creating a risk of
908 taking the wrong stEnd symbol record as the end of
909 the current struct, which would cause GDB to undercount
910 the real number of fields in this struct. To make sure
911 we really reached the right stEnd symbol record, we
912 check the associated name, and match it against the
913 struct name. Since method names are mangled while
914 the class name is not, there is no risk of having a
915 method whose name is identical to the class name
916 (in particular constructor method names are different
917 from the class name). There is therefore no risk that
918 this check stops the count on the StEnd of a method. */
919 if (strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss,
925 if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
927 /* If the type of the member is Nil (or Void),
928 without qualifiers, assume the tag is an
930 Alpha cc -migrate enums are recognized by a zero
931 index and a zero symbol value.
932 DU 4.0 cc enums are recognized by a member type of
933 btEnum without qualifiers and a zero symbol value. */
934 if (tsym.index == indexNil
935 || (tsym.index == 0 && sh->value == 0))
936 type_code = TYPE_CODE_ENUM;
939 (*debug_swap->swap_tir_in) (bigend,
940 &ax[tsym.index].a_ti,
942 if ((tir.bt == btNil || tir.bt == btVoid
943 || (tir.bt == btEnum && sh->value == 0))
945 type_code = TYPE_CODE_ENUM;
949 if (tsym.value > max_value)
950 max_value = tsym.value;
959 /* This is a no-op; is it trying to tell us something
960 we should be checking? */
961 if (tsym.sc == scVariant); /*UNIMPLEMENTED */
965 /* This is something like a struct within a
966 struct. Skip over the fields of the inner
967 struct. The -1 is because the for loop will
968 increment ext_tsym. */
969 ext_tsym = ((char *) debug_info->external_sym
970 + ((cur_fdr->isymBase + tsym.index - 1)
971 * external_sym_size));
977 /* mips cc puts out a typedef for struct x if it is not yet
978 defined when it encounters
979 struct y { struct x *xp; };
984 /* Irix5 cc puts out a stIndirect for struct x if it is not
985 yet defined when it encounters
986 struct y { struct x *xp; };
991 complaint (&symfile_complaints,
992 "declaration block contains unhandled symbol type %d",
998 /* In an stBlock, there is no way to distinguish structs,
999 unions, and enums at this point. This is a bug in the
1000 original design (that has been fixed with the recent
1001 addition of the stStruct, stUnion, and stEnum symbol
1002 types.) The way you can tell is if/when you see a variable
1003 or field of that type. In that case the variable's type
1004 (in the AUX table) says if the type is struct, union, or
1005 enum, and points back to the stBlock here. So you can
1006 patch the tag kind up later - but only if there actually is
1007 a variable or field of that type.
1009 So until we know for sure, we will guess at this point.
1011 If the first member has index==indexNil or a void type,
1012 assume we have an enumeration.
1013 Otherwise, if there is more than one member, and all
1014 the members have offset 0, assume we have a union.
1015 Otherwise, assume we have a struct.
1017 The heuristic could guess wrong in the case of of an
1018 enumeration with no members or a union with one (or zero)
1019 members, or when all except the last field of a struct have
1020 width zero. These are uncommon and/or illegal situations,
1021 and in any case guessing wrong probably doesn't matter
1024 But if we later do find out we were wrong, we fixup the tag
1025 kind. Members of an enumeration must be handled
1026 differently from struct/union fields, and that is harder to
1027 patch up, but luckily we shouldn't need to. (If there are
1028 any enumeration members, we can tell for sure it's an enum
1031 if (type_code == TYPE_CODE_UNDEF)
1033 if (nfields > 1 && max_value == 0)
1034 type_code = TYPE_CODE_UNION;
1036 type_code = TYPE_CODE_STRUCT;
1039 /* Create a new type or use the pending type. */
1040 pend = is_pending_symbol (cur_fdr, ext_sh);
1041 if (pend == (struct mdebug_pending *) NULL)
1043 t = new_type (NULL);
1044 add_pending (cur_fdr, ext_sh, t);
1049 /* Do not set the tag name if it is a compiler generated tag name
1050 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1051 Alpha cc puts out an sh->iss of zero for those. */
1052 if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
1053 TYPE_TAG_NAME (t) = NULL;
1055 TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack,
1058 TYPE_CODE (t) = type_code;
1059 TYPE_LENGTH (t) = sh->value;
1060 TYPE_NFIELDS (t) = nfields;
1061 TYPE_FIELDS (t) = f = ((struct field *)
1063 nfields * sizeof (struct field)));
1065 if (type_code == TYPE_CODE_ENUM)
1067 int unsigned_enum = 1;
1069 /* This is a non-empty enum. */
1071 /* DEC c89 has the number of enumerators in the sh.value field,
1072 not the type length, so we have to compensate for that
1073 incompatibility quirk.
1074 This might do the wrong thing for an enum with one or two
1075 enumerators and gcc -gcoff -fshort-enums, but these cases
1076 are hopefully rare enough.
1077 Alpha cc -migrate has a sh.value field of zero, we adjust
1079 if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)
1080 || TYPE_LENGTH (t) == 0)
1081 TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT;
1082 for (ext_tsym = ext_sh + external_sym_size;
1084 ext_tsym += external_sym_size)
1087 struct symbol *enum_sym;
1089 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
1091 if (tsym.st != stMember)
1094 FIELD_BITPOS (*f) = tsym.value;
1095 FIELD_TYPE (*f) = t;
1096 FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss;
1097 FIELD_BITSIZE (*f) = 0;
1098 FIELD_STATIC_KIND (*f) = 0;
1100 enum_sym = ((struct symbol *)
1101 obstack_alloc (¤t_objfile->symbol_obstack,
1102 sizeof (struct symbol)));
1103 memset (enum_sym, 0, sizeof (struct symbol));
1104 SYMBOL_NAME (enum_sym) =
1105 obsavestring (f->name, strlen (f->name),
1106 ¤t_objfile->symbol_obstack);
1107 SYMBOL_CLASS (enum_sym) = LOC_CONST;
1108 SYMBOL_TYPE (enum_sym) = t;
1109 SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
1110 SYMBOL_VALUE (enum_sym) = tsym.value;
1111 if (SYMBOL_VALUE (enum_sym) < 0)
1113 add_symbol (enum_sym, top_stack->cur_block);
1115 /* Skip the stMembers that we've handled. */
1120 TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED;
1122 /* make this the current type */
1123 top_stack->cur_type = t;
1124 top_stack->cur_field = 0;
1126 /* Do not create a symbol for alpha cc unnamed structs. */
1130 /* gcc puts out an empty struct for an opaque struct definitions,
1131 do not create a symbol for it either. */
1132 if (TYPE_NFIELDS (t) == 0)
1134 TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
1138 s = new_symbol (name);
1139 SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
1140 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1141 SYMBOL_VALUE (s) = 0;
1142 SYMBOL_TYPE (s) = t;
1143 add_symbol (s, top_stack->cur_block);
1146 /* End of local variables shared by struct, union, enum, and
1147 block (as yet unknown struct/union/enum) processing. */
1151 found_ecoff_debugging_info = 1;
1152 /* beginnning of (code) block. Value of symbol
1153 is the displacement from procedure start */
1154 push_parse_stack ();
1156 /* Do not start a new block if this is the outermost block of a
1157 procedure. This allows the LOC_BLOCK symbol to point to the
1158 block with the local variables, so funcname::var works. */
1159 if (top_stack->blocktype == stProc
1160 || top_stack->blocktype == stStaticProc)
1162 top_stack->blocktype = stNil;
1166 top_stack->blocktype = stBlock;
1167 b = new_block (top_stack->maxsyms);
1168 BLOCK_START (b) = sh->value + top_stack->procadr;
1169 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1170 top_stack->cur_block = b;
1171 add_block (b, top_stack->cur_st);
1174 case stEnd: /* end (of anything) */
1175 if (sh->sc == scInfo || SC_IS_COMMON (sh->sc))
1177 /* Finished with type */
1178 top_stack->cur_type = 0;
1180 else if (sh->sc == scText &&
1181 (top_stack->blocktype == stProc ||
1182 top_stack->blocktype == stStaticProc))
1184 /* Finished with procedure */
1185 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
1186 struct mips_extra_func_info *e;
1188 struct type *ftype = top_stack->cur_type;
1191 BLOCK_END (top_stack->cur_block) += sh->value; /* size */
1193 /* Make up special symbol to contain procedure specific info */
1194 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
1195 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
1196 SYMBOL_CLASS (s) = LOC_CONST;
1197 SYMBOL_TYPE (s) = mdebug_type_void;
1198 e = ((struct mips_extra_func_info *)
1199 obstack_alloc (¤t_objfile->symbol_obstack,
1200 sizeof (struct mips_extra_func_info)));
1201 memset (e, 0, sizeof (struct mips_extra_func_info));
1202 SYMBOL_VALUE (s) = (long) e;
1203 e->numargs = top_stack->numargs;
1204 e->pdr.framereg = -1;
1205 add_symbol (s, top_stack->cur_block);
1207 /* Reallocate symbols, saving memory */
1208 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
1210 /* f77 emits proc-level with address bounds==[0,0],
1211 So look for such child blocks, and patch them. */
1212 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
1214 struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
1215 if (BLOCK_SUPERBLOCK (b_bad) == b
1216 && BLOCK_START (b_bad) == top_stack->procadr
1217 && BLOCK_END (b_bad) == top_stack->procadr)
1219 BLOCK_START (b_bad) = BLOCK_START (b);
1220 BLOCK_END (b_bad) = BLOCK_END (b);
1224 if (TYPE_NFIELDS (ftype) <= 0)
1226 /* No parameter type information is recorded with the function's
1227 type. Set that from the type of the parameter symbols. */
1228 int nparams = top_stack->numargs;
1234 TYPE_NFIELDS (ftype) = nparams;
1235 TYPE_FIELDS (ftype) = (struct field *)
1236 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
1238 for (i = iparams = 0; iparams < nparams; i++)
1240 sym = BLOCK_SYM (b, i);
1241 switch (SYMBOL_CLASS (sym))
1246 case LOC_REGPARM_ADDR:
1247 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
1248 TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
1258 else if (sh->sc == scText && top_stack->blocktype == stBlock)
1260 /* End of (code) block. The value of the symbol is the
1261 displacement from the procedure`s start address of the
1262 end of this block. */
1263 BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
1264 shrink_block (top_stack->cur_block, top_stack->cur_st);
1266 else if (sh->sc == scText && top_stack->blocktype == stNil)
1268 /* End of outermost block. Pop parse stack and ignore. The
1269 following stEnd of stProc will take care of the block. */
1272 else if (sh->sc == scText && top_stack->blocktype == stFile)
1274 /* End of file. Pop parse stack and ignore. Higher
1275 level code deals with this. */
1279 complaint (&symfile_complaints,
1280 "stEnd with storage class %d not handled", sh->sc);
1282 pop_parse_stack (); /* restore previous lexical context */
1285 case stMember: /* member of struct or union */
1286 f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
1287 FIELD_NAME (*f) = name;
1288 FIELD_BITPOS (*f) = sh->value;
1290 FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name);
1291 FIELD_BITSIZE (*f) = bitsize;
1292 FIELD_STATIC_KIND (*f) = 0;
1295 case stIndirect: /* forward declaration on Irix5 */
1296 /* Forward declarations from Irix5 cc are handled by cross_ref,
1300 case stTypedef: /* type definition */
1301 found_ecoff_debugging_info = 1;
1303 /* Typedefs for forward declarations and opaque structs from alpha cc
1304 are handled by cross_ref, skip them. */
1308 /* Parse the type or use the pending type. */
1309 pend = is_pending_symbol (cur_fdr, ext_sh);
1310 if (pend == (struct mdebug_pending *) NULL)
1312 t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name);
1313 add_pending (cur_fdr, ext_sh, t);
1318 /* mips cc puts out a typedef with the name of the struct for forward
1319 declarations. These should not go into the symbol table and
1320 TYPE_NAME should not be set for them.
1321 They can't be distinguished from an intentional typedef to
1322 the same name however:
1324 struct x { int ix; int jx; };
1328 struct xx {int ixx; int jxx; };
1329 generates a cross referencing stTypedef for x and xx.
1330 The user visible effect of this is that the type of a pointer
1331 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1332 The problem is fixed with alpha cc and Irix5 cc. */
1334 /* However if the typedef cross references to an opaque aggregate, it
1335 is safe to omit it from the symbol table. */
1337 if (has_opaque_xref (cur_fdr, sh))
1339 s = new_symbol (name);
1340 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1341 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1342 SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
1343 SYMBOL_TYPE (s) = t;
1344 add_symbol (s, top_stack->cur_block);
1346 /* Incomplete definitions of structs should not get a name. */
1347 if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
1348 && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
1349 || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
1350 && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
1352 if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
1353 || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
1355 /* If we are giving a name to a type such as "pointer to
1356 foo" or "function returning foo", we better not set
1357 the TYPE_NAME. If the program contains "typedef char
1358 *caddr_t;", we don't want all variables of type char
1359 * to print as caddr_t. This is not just a
1360 consequence of GDB's type management; CC and GCC (at
1361 least through version 2.4) both output variables of
1362 either type char * or caddr_t with the type
1363 refering to the stTypedef symbol for caddr_t. If a future
1364 compiler cleans this up it GDB is not ready for it
1365 yet, but if it becomes ready we somehow need to
1366 disable this check (without breaking the PCC/GCC2.4
1371 Fortunately, this check seems not to be necessary
1372 for anything except pointers or functions. */
1375 TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s);
1379 case stFile: /* file name */
1380 push_parse_stack ();
1381 top_stack->blocktype = sh->st;
1384 /* I`ve never seen these for C */
1386 break; /* register relocation */
1388 break; /* forwarding address */
1390 break; /* constant */
1392 complaint (&symfile_complaints, "unknown symbol type 0x%x", sh->st);
1399 /* Parse the type information provided in the raw AX entries for
1400 the symbol SH. Return the bitfield size in BS, in case.
1401 We must byte-swap the AX entries before we use them; BIGEND says whether
1402 they are big-endian or little-endian (from fh->fBigendian). */
1404 static struct type *
1405 parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs,
1406 int bigend, char *sym_name)
1408 /* Null entries in this map are treated specially */
1409 static struct type **map_bt[] =
1411 &mdebug_type_void, /* btNil */
1412 &mdebug_type_adr_32, /* btAdr */
1413 &mdebug_type_char, /* btChar */
1414 &mdebug_type_unsigned_char, /* btUChar */
1415 &mdebug_type_short, /* btShort */
1416 &mdebug_type_unsigned_short, /* btUShort */
1417 &mdebug_type_int_32, /* btInt */
1418 &mdebug_type_unsigned_int_32, /* btUInt */
1419 &mdebug_type_long_32, /* btLong */
1420 &mdebug_type_unsigned_long_32, /* btULong */
1421 &mdebug_type_float, /* btFloat */
1422 &mdebug_type_double, /* btDouble */
1429 &mdebug_type_complex, /* btComplex */
1430 &mdebug_type_double_complex, /* btDComplex */
1432 &mdebug_type_fixed_dec, /* btFixedDec */
1433 &mdebug_type_float_dec, /* btFloatDec */
1434 &mdebug_type_string, /* btString */
1437 &mdebug_type_void, /* btVoid */
1438 0, /* DEC C++: Pointer to member */
1439 0, /* DEC C++: Virtual function table */
1440 0, /* DEC C++: Class (Record) */
1441 &mdebug_type_long_64, /* btLong64 */
1442 &mdebug_type_unsigned_long_64, /* btULong64 */
1443 &mdebug_type_long_long_64, /* btLongLong64 */
1444 &mdebug_type_unsigned_long_long_64, /* btULongLong64 */
1445 &mdebug_type_adr_64, /* btAdr64 */
1446 &mdebug_type_int_64, /* btInt64 */
1447 &mdebug_type_unsigned_int_64, /* btUInt64 */
1451 struct type *tp = 0;
1452 enum type_code type_code = TYPE_CODE_UNDEF;
1454 /* Handle undefined types, they have indexNil. */
1455 if (aux_index == indexNil)
1456 return mdebug_type_int;
1458 /* Handle corrupt aux indices. */
1459 if (aux_index >= (debug_info->fdr + fd)->caux)
1461 index_complaint (sym_name);
1462 return mdebug_type_int;
1466 /* Use aux as a type information record, map its basic type. */
1467 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1468 if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt)))
1470 basic_type_complaint (t->bt, sym_name);
1471 return mdebug_type_int;
1475 tp = *map_bt[t->bt];
1480 /* Cannot use builtin types -- build our own */
1484 type_code = TYPE_CODE_STRUCT;
1487 type_code = TYPE_CODE_UNION;
1490 type_code = TYPE_CODE_ENUM;
1493 type_code = TYPE_CODE_RANGE;
1496 type_code = TYPE_CODE_SET;
1499 /* alpha cc -migrate uses this for typedefs. The true type will
1500 be obtained by crossreferencing below. */
1501 type_code = TYPE_CODE_ERROR;
1504 /* alpha cc uses this for typedefs. The true type will be
1505 obtained by crossreferencing below. */
1506 type_code = TYPE_CODE_ERROR;
1509 basic_type_complaint (t->bt, sym_name);
1510 return mdebug_type_int;
1514 /* Move on to next aux */
1519 int width = AUX_GET_WIDTH (bigend, ax);
1521 /* Inhibit core dumps with some cfront generated objects that
1523 if (bs == (int *) NULL)
1525 /* Alpha cc -migrate encodes char and unsigned char types
1526 as short and unsigned short types with a field width of 8.
1527 Enum types also have a field width which we ignore for now. */
1528 if (t->bt == btShort && width == 8)
1529 tp = mdebug_type_char;
1530 else if (t->bt == btUShort && width == 8)
1531 tp = mdebug_type_unsigned_char;
1532 else if (t->bt == btEnum)
1535 complaint (&symfile_complaints, "can't handle TIR fBitfield for %s",
1543 /* A btIndirect entry cross references to an aux entry containing
1545 if (t->bt == btIndirect)
1552 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
1554 if (rn->rfd == 0xfff)
1556 rf = AUX_GET_ISYM (bigend, ax);
1564 complaint (&symfile_complaints,
1565 "unable to cross ref btIndirect for %s", sym_name);
1566 return mdebug_type_int;
1568 xref_fh = get_rfd (fd, rf);
1569 xref_fd = xref_fh - debug_info->fdr;
1570 tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
1571 rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
1574 /* All these types really point to some (common) MIPS type
1575 definition, and only the type-qualifiers fully identify
1576 them. We'll make the same effort at sharing. */
1577 if (t->bt == btStruct ||
1581 /* btSet (I think) implies that the name is a tag name, not a typedef
1582 name. This apparently is a MIPS extension for C sets. */
1587 /* Try to cross reference this type, build new type on failure. */
1588 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1589 if (tp == (struct type *) NULL)
1590 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1592 /* DEC c89 produces cross references to qualified aggregate types,
1593 dereference them. */
1594 while (TYPE_CODE (tp) == TYPE_CODE_PTR
1595 || TYPE_CODE (tp) == TYPE_CODE_ARRAY)
1596 tp = TYPE_TARGET_TYPE (tp);
1598 /* Make sure that TYPE_CODE(tp) has an expected type code.
1599 Any type may be returned from cross_ref if file indirect entries
1601 if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
1602 && TYPE_CODE (tp) != TYPE_CODE_UNION
1603 && TYPE_CODE (tp) != TYPE_CODE_ENUM)
1605 unexpected_type_code_complaint (sym_name);
1610 /* Usually, TYPE_CODE(tp) is already type_code. The main
1611 exception is if we guessed wrong re struct/union/enum.
1612 But for struct vs. union a wrong guess is harmless, so
1613 don't complain(). */
1614 if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
1615 && type_code != TYPE_CODE_ENUM)
1616 || (TYPE_CODE (tp) != TYPE_CODE_ENUM
1617 && type_code == TYPE_CODE_ENUM))
1619 bad_tag_guess_complaint (sym_name);
1622 if (TYPE_CODE (tp) != type_code)
1624 TYPE_CODE (tp) = type_code;
1627 /* Do not set the tag name if it is a compiler generated tag name
1628 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1629 if (name[0] == '.' || name[0] == '\0')
1630 TYPE_TAG_NAME (tp) = NULL;
1631 else if (TYPE_TAG_NAME (tp) == NULL
1632 || !STREQ (TYPE_TAG_NAME (tp), name))
1633 TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),
1634 ¤t_objfile->type_obstack);
1638 /* All these types really point to some (common) MIPS type
1639 definition, and only the type-qualifiers fully identify
1640 them. We'll make the same effort at sharing.
1641 FIXME: We are not doing any guessing on range types. */
1642 if (t->bt == btRange)
1646 /* Try to cross reference this type, build new type on failure. */
1647 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1648 if (tp == (struct type *) NULL)
1649 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1651 /* Make sure that TYPE_CODE(tp) has an expected type code.
1652 Any type may be returned from cross_ref if file indirect entries
1654 if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
1656 unexpected_type_code_complaint (sym_name);
1660 /* Usually, TYPE_CODE(tp) is already type_code. The main
1661 exception is if we guessed wrong re struct/union/enum. */
1662 if (TYPE_CODE (tp) != type_code)
1664 bad_tag_guess_complaint (sym_name);
1665 TYPE_CODE (tp) = type_code;
1667 if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))
1668 TYPE_NAME (tp) = obsavestring (name, strlen (name),
1669 ¤t_objfile->type_obstack);
1672 if (t->bt == btTypedef)
1676 /* Try to cross reference this type, it should succeed. */
1677 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1678 if (tp == (struct type *) NULL)
1680 complaint (&symfile_complaints,
1681 "unable to cross ref btTypedef for %s", sym_name);
1682 tp = mdebug_type_int;
1686 /* Deal with range types */
1687 if (t->bt == btRange)
1689 TYPE_NFIELDS (tp) = 2;
1690 TYPE_FIELDS (tp) = ((struct field *)
1691 TYPE_ALLOC (tp, 2 * sizeof (struct field)));
1692 TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),
1693 ¤t_objfile->type_obstack);
1694 TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);
1696 TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),
1697 ¤t_objfile->type_obstack);
1698 TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);
1702 /* Parse all the type qualifiers now. If there are more
1703 than 6 the game will continue in the next aux */
1707 #define PARSE_TQ(tq) \
1708 if (t->tq != tqNil) \
1709 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1721 /* mips cc 2.x and gcc never put out continued aux entries. */
1725 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1729 /* Complain for illegal continuations due to corrupt aux entries. */
1731 complaint (&symfile_complaints, "illegal TIR continued for %s", sym_name);
1736 /* Make up a complex type from a basic one. Type is passed by
1737 reference in TPP and side-effected as necessary. The type
1738 qualifier TQ says how to handle the aux symbols at AX for
1739 the symbol SX we are currently analyzing. BIGEND says whether
1740 aux symbols are big-endian or little-endian.
1741 Returns the number of aux symbols we parsed. */
1744 upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend,
1750 /* Used in array processing */
1761 t = lookup_pointer_type (*tpp);
1766 t = lookup_function_type (*tpp);
1773 /* Determine and record the domain type (type of index) */
1774 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
1780 rf = AUX_GET_ISYM (bigend, ax);
1783 fh = get_rfd (fd, rf);
1785 indx = parse_type (fh - debug_info->fdr,
1786 debug_info->external_aux + fh->iauxBase,
1787 id, (int *) NULL, bigend, sym_name);
1789 /* The bounds type should be an integer type, but might be anything
1790 else due to corrupt aux entries. */
1791 if (TYPE_CODE (indx) != TYPE_CODE_INT)
1793 complaint (&symfile_complaints,
1794 "illegal array index type for %s, assuming int", sym_name);
1795 indx = mdebug_type_int;
1798 /* Get the bounds, and create the array type. */
1800 lower = AUX_GET_DNLOW (bigend, ax);
1802 upper = AUX_GET_DNHIGH (bigend, ax);
1804 rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
1806 range = create_range_type ((struct type *) NULL, indx,
1809 t = create_array_type ((struct type *) NULL, *tpp, range);
1811 /* We used to fill in the supplied array element bitsize
1812 here if the TYPE_LENGTH of the target type was zero.
1813 This happens for a `pointer to an array of anonymous structs',
1814 but in this case the array element bitsize is also zero,
1815 so nothing is gained.
1816 And we used to check the TYPE_LENGTH of the target type against
1817 the supplied array element bitsize.
1818 gcc causes a mismatch for `pointer to array of object',
1819 since the sdb directives it uses do not have a way of
1820 specifying the bitsize, but it does no harm (the
1821 TYPE_LENGTH should be correct) and we should be able to
1822 ignore the erroneous bitsize from the auxiliary entry safely.
1823 dbx seems to ignore it too. */
1825 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1827 if (TYPE_LENGTH (*tpp) == 0)
1829 TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB;
1836 /* Volatile -- currently ignored */
1840 /* Const -- currently ignored */
1844 complaint (&symfile_complaints, "unknown type qualifier 0x%x", tq);
1850 /* Parse a procedure descriptor record PR. Note that the procedure is
1851 parsed _after_ the local symbols, now we just insert the extra
1852 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1853 already been placed in the procedure's main block. Note also that
1854 images that have been partially stripped (ld -x) have been deprived
1855 of local symbols, and we have to cope with them here. FIRST_OFF is
1856 the offset of the first procedure for this FDR; we adjust the
1857 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1858 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1859 in question, or NULL to use top_stack->cur_block. */
1861 static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *);
1864 parse_procedure (PDR *pr, struct symtab *search_symtab,
1865 struct partial_symtab *pst)
1867 struct symbol *s, *i;
1869 struct mips_extra_func_info *e;
1872 /* Simple rule to find files linked "-x" */
1873 if (cur_fdr->rss == -1)
1877 /* Static procedure at address pr->adr. Sigh. */
1878 /* FIXME-32x64. assuming pr->adr fits in long. */
1879 complaint (&symfile_complaints,
1880 "can't handle PDR for static proc at 0x%lx",
1881 (unsigned long) pr->adr);
1889 (*debug_swap->swap_ext_in) (cur_bfd,
1890 ((char *) debug_info->external_ext
1892 * debug_swap->external_ext_size)),
1894 sh_name = debug_info->ssext + she.asym.iss;
1902 (*debug_swap->swap_sym_in) (cur_bfd,
1903 ((char *) debug_info->external_sym
1904 + ((cur_fdr->isymBase + pr->isym)
1905 * debug_swap->external_sym_size)),
1907 sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
1910 if (search_symtab != NULL)
1913 /* This loses both in the case mentioned (want a static, find a global),
1914 but also if we are looking up a non-mangled name which happens to
1915 match the name of a mangled function. */
1916 /* We have to save the cur_fdr across the call to lookup_symbol.
1917 If the pdr is for a static function and if a global function with
1918 the same name exists, lookup_symbol will eventually read in the symtab
1919 for the global function and clobber cur_fdr. */
1920 FDR *save_cur_fdr = cur_fdr;
1921 s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
1922 cur_fdr = save_cur_fdr;
1926 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),
1932 s = mylookup_symbol (sh_name, top_stack->cur_block,
1933 VAR_NAMESPACE, LOC_BLOCK);
1937 b = SYMBOL_BLOCK_VALUE (s);
1941 complaint (&symfile_complaints, "PDR for %s, but no symbol", sh_name);
1945 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1946 s = new_symbol (sh_name);
1947 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1948 SYMBOL_CLASS (s) = LOC_BLOCK;
1949 /* Donno its type, hope int is ok */
1950 SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int);
1951 add_symbol (s, top_stack->cur_block);
1952 /* Wont have symbols for this one */
1954 SYMBOL_BLOCK_VALUE (s) = b;
1955 BLOCK_FUNCTION (b) = s;
1956 BLOCK_START (b) = pr->adr;
1957 /* BOUND used to be the end of procedure's text, but the
1958 argument is no longer passed in. */
1959 BLOCK_END (b) = bound;
1960 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1961 add_block (b, top_stack->cur_st);
1965 i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);
1969 e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);
1971 e->pdr.isym = (long) s;
1973 /* GDB expects the absolute function start address for the
1974 procedure descriptor in e->pdr.adr.
1975 As the address in the procedure descriptor is usually relative,
1976 we would have to relocate e->pdr.adr with cur_fdr->adr and
1977 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1978 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1979 in shared libraries on some systems, and on other systems
1980 e->pdr.adr is sometimes offset by a bogus value.
1981 To work around these problems, we replace e->pdr.adr with
1982 the start address of the function. */
1983 e->pdr.adr = BLOCK_START (b);
1985 /* Correct incorrect setjmp procedure descriptor from the library
1986 to make backtrace through setjmp work. */
1987 if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp"))
1989 complaint (&symfile_complaints, "fixing bad setjmp PDR from libc");
1990 e->pdr.pcreg = RA_REGNUM;
1991 e->pdr.regmask = 0x80000000;
1992 e->pdr.regoffset = -4;
1996 /* It would be reasonable that functions that have been compiled
1997 without debugging info have a btNil type for their return value,
1998 and functions that are void and are compiled with debugging info
2000 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2001 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2003 The glevel field in cur_fdr could be used to determine the presence
2004 of debugging info, but GCC doesn't always pass the -g switch settings
2005 to the assembler and GAS doesn't set the glevel field from the -g switch
2007 To work around these problems, the return value type of a TYPE_CODE_VOID
2008 function is adjusted accordingly if no debugging info was found in the
2009 compilation unit. */
2011 if (processing_gcc_compilation == 0
2012 && found_ecoff_debugging_info == 0
2013 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)
2014 SYMBOL_TYPE (s) = nodebug_func_symbol_type;
2017 /* Relocate the extra function info pointed to by the symbol table. */
2020 ecoff_relocate_efi (struct symbol *sym, CORE_ADDR delta)
2022 struct mips_extra_func_info *e;
2024 e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym);
2026 e->pdr.adr += delta;
2029 /* Parse the external symbol ES. Just call parse_symbol() after
2030 making sure we know where the aux are for it.
2031 BIGEND says whether aux entries are big-endian or little-endian.
2033 This routine clobbers top_stack->cur_block and ->cur_st. */
2035 static void parse_external (EXTR *, int, struct section_offsets *,
2039 parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets,
2040 struct objfile *objfile)
2044 if (es->ifd != ifdNil)
2047 cur_fdr = debug_info->fdr + cur_fd;
2048 ax = debug_info->external_aux + cur_fdr->iauxBase;
2052 cur_fdr = debug_info->fdr;
2056 /* Reading .o files */
2057 if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil)
2060 switch (es->asym.st)
2063 /* These are generated for static symbols in .o files,
2084 /* FIXME: Turn this into a complaint? */
2086 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2087 what, debug_info->ssext + es->asym.iss,
2088 fdr_name (cur_fdr));
2092 switch (es->asym.st)
2096 /* There is no need to parse the external procedure symbols.
2097 If they are from objects compiled without -g, their index will
2098 be indexNil, and the symbol definition from the minimal symbol
2099 is preferrable (yielding a function returning int instead of int).
2100 If the index points to a local procedure symbol, the local
2101 symbol already provides the correct type.
2102 Note that the index of the external procedure symbol points
2103 to the local procedure symbol in the local symbol table, and
2104 _not_ to the auxiliary symbol info. */
2108 /* Global common symbols are resolved by the runtime loader,
2110 if (SC_IS_COMMON (es->asym.sc))
2113 /* Note that the case of a symbol with indexNil must be handled
2114 anyways by parse_symbol(). */
2115 parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile);
2122 /* Parse the line number info for file descriptor FH into
2123 GDB's linetable LT. MIPS' encoding requires a little bit
2124 of magic to get things out. Note also that MIPS' line
2125 numbers can go back and forth, apparently we can live
2126 with that and do not need to reorder our linetables */
2128 static void parse_lines (FDR *, PDR *, struct linetable *, int,
2129 struct partial_symtab *, CORE_ADDR);
2132 parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines,
2133 struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr)
2135 unsigned char *base;
2137 int delta, count, lineno = 0;
2139 if (fh->cbLine == 0)
2142 /* Scan by procedure descriptors */
2144 for (j = 0; j < fh->cpd; j++, pr++)
2148 unsigned char *halt;
2150 /* No code for this one */
2151 if (pr->iline == ilineNil ||
2152 pr->lnLow == -1 || pr->lnHigh == -1)
2155 /* Determine start and end address of compressed line bytes for
2157 base = debug_info->line + fh->cbLineOffset;
2158 if (j != (fh->cpd - 1))
2159 halt = base + pr[1].cbLineOffset;
2161 halt = base + fh->cbLine;
2162 base += pr->cbLineOffset;
2164 adr = pst->textlow + pr->adr - lowest_pdr_addr;
2166 l = adr >> 2; /* in words */
2167 for (lineno = pr->lnLow; base < halt;)
2169 count = *base & 0x0f;
2170 delta = *base++ >> 4;
2175 delta = (base[0] << 8) | base[1];
2176 if (delta >= 0x8000)
2180 lineno += delta; /* first delta is 0 */
2182 /* Complain if the line table overflows. Could happen
2183 with corrupt binaries. */
2184 if (lt->nitems >= maxlines)
2186 complaint (&symfile_complaints,
2187 "guessed size of linetable for %s incorrectly",
2191 k = add_line (lt, lineno, l, k);
2198 function_outside_compilation_unit_complaint (const char *arg1)
2200 complaint (&symfile_complaints,
2201 "function `%s' appears to be defined outside of all compilation units",
2205 /* Master parsing procedure for first-pass reading of file symbols
2206 into a partial_symtab. */
2209 parse_partial_symbols (struct objfile *objfile)
2211 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
2212 const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
2213 const bfd_size_type external_ext_size = debug_swap->external_ext_size;
2214 void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in;
2215 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
2216 void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in;
2218 HDRR *hdr = &debug_info->symbolic_header;
2219 /* Running pointers */
2224 register EXTR *ext_in;
2227 struct partial_symtab *pst;
2228 int textlow_not_set = 1;
2229 int past_first_source_file = 0;
2231 /* List of current psymtab's include files */
2232 char **psymtab_include_list;
2233 int includes_allocated;
2236 struct pst_map *fdr_to_pst;
2237 /* Index within current psymtab dependency list */
2238 struct partial_symtab **dependency_list;
2239 int dependencies_used, dependencies_allocated;
2240 struct cleanup *old_chain;
2242 enum language prev_language;
2243 asection *text_sect;
2244 int relocatable = 0;
2246 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2247 the shared libraries are prelinked at a high memory address.
2248 We have to adjust the start address of the object file for this case,
2249 by setting it to the start address of the first procedure in the file.
2250 But we should do no adjustments if we are debugging a .o file, where
2251 the text section (and fh->adr) really starts at zero. */
2252 text_sect = bfd_get_section_by_name (cur_bfd, ".text");
2253 if (text_sect != NULL
2254 && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
2257 extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack,
2258 sizeof (EXTR) * hdr->iextMax);
2260 includes_allocated = 30;
2262 psymtab_include_list = (char **) alloca (includes_allocated *
2264 next_symbol_text_func = mdebug_next_symbol_text;
2266 dependencies_allocated = 30;
2267 dependencies_used = 0;
2269 (struct partial_symtab **) alloca (dependencies_allocated *
2270 sizeof (struct partial_symtab *));
2272 last_source_file = NULL;
2277 * Only parse the Local and External symbols, and the Relative FDR.
2278 * Fixup enough of the loader symtab to be able to use it.
2279 * Allocate space only for the file's portions we need to
2284 max_glevel = MIN_GLEVEL;
2286 /* Allocate the map FDR -> PST.
2287 Minor hack: -O3 images might claim some global data belongs
2288 to FDR -1. We`ll go along with that */
2289 fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);
2290 old_chain = make_cleanup (xfree, fdr_to_pst);
2293 struct partial_symtab *pst = new_psymtab ("", objfile);
2294 fdr_to_pst[-1].pst = pst;
2298 /* Allocate the global pending list. */
2300 ((struct mdebug_pending **)
2301 obstack_alloc (&objfile->psymbol_obstack,
2302 hdr->ifdMax * sizeof (struct mdebug_pending *)));
2303 memset (pending_list, 0,
2304 hdr->ifdMax * sizeof (struct mdebug_pending *));
2306 /* Pass 0 over external syms: swap them in. */
2307 ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));
2308 make_cleanup (xfree, ext_block);
2310 ext_out = (char *) debug_info->external_ext;
2311 ext_out_end = ext_out + hdr->iextMax * external_ext_size;
2313 for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
2314 (*swap_ext_in) (cur_bfd, ext_out, ext_in);
2316 /* Pass 1 over external syms: Presize and partition the list */
2318 ext_in_end = ext_in + hdr->iextMax;
2319 for (; ext_in < ext_in_end; ext_in++)
2321 /* See calls to complain below. */
2322 if (ext_in->ifd >= -1
2323 && ext_in->ifd < hdr->ifdMax
2324 && ext_in->asym.iss >= 0
2325 && ext_in->asym.iss < hdr->issExtMax)
2326 fdr_to_pst[ext_in->ifd].n_globals++;
2329 /* Pass 1.5 over files: partition out global symbol space */
2331 for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
2333 fdr_to_pst[f_idx].globals_offset = s_idx;
2334 s_idx += fdr_to_pst[f_idx].n_globals;
2335 fdr_to_pst[f_idx].n_globals = 0;
2340 For ECOFF in ELF, we skip the creation of the minimal symbols.
2341 The ECOFF symbols should be a subset of the Elf symbols, and the
2342 section information of the elf symbols will be more accurate.
2343 FIXME! What about Irix 5's native linker?
2345 By default, Elf sections which don't exist in ECOFF
2346 get put in ECOFF's absolute section by the gnu linker.
2347 Since absolute sections don't get relocated, we
2348 end up calculating an address different from that of
2349 the symbol's minimal symbol (created earlier from the
2352 To fix this, either :
2353 1) don't create the duplicate symbol
2354 (assumes ECOFF symtab is a subset of the ELF symtab;
2355 assumes no side-effects result from ignoring ECOFF symbol)
2356 2) create it, only if lookup for existing symbol in ELF's minimal
2359 assumes no side-effects result from ignoring ECOFF symbol)
2360 3) create it, but lookup ELF's minimal symbol and use it's section
2361 during relocation, then modify "uniqify" phase to merge and
2362 eliminate the duplicate symbol
2363 (highly inefficient)
2365 I've implemented #1 here...
2366 Skip the creation of the minimal symbols based on the ECOFF
2369 /* Pass 2 over external syms: fill in external symbols */
2371 ext_in_end = ext_in + hdr->iextMax;
2372 for (; ext_in < ext_in_end; ext_in++)
2374 enum minimal_symbol_type ms_type = mst_text;
2375 CORE_ADDR svalue = ext_in->asym.value;
2377 /* The Irix 5 native tools seem to sometimes generate bogus
2378 external symbols. */
2379 if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
2381 complaint (&symfile_complaints,
2382 "bad ifd for external symbol: %d (max %ld)", ext_in->ifd,
2386 if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
2388 complaint (&symfile_complaints,
2389 "bad iss for external symbol: %ld (max %ld)",
2390 ext_in->asym.iss, hdr->issExtMax);
2394 extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
2395 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
2398 if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil)
2402 /* Pass 3 over files, over local syms: fill in static symbols */
2403 name = debug_info->ssext + ext_in->asym.iss;
2405 /* Process ECOFF Symbol Types and Storage Classes */
2406 switch (ext_in->asym.st)
2409 /* Beginnning of Procedure */
2410 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2413 /* Load time only static procs */
2414 ms_type = mst_file_text;
2415 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2418 /* External symbol */
2419 if (SC_IS_COMMON (ext_in->asym.sc))
2421 /* The value of a common symbol is its size, not its address.
2425 else if (SC_IS_DATA (ext_in->asym.sc))
2428 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2430 else if (SC_IS_BSS (ext_in->asym.sc))
2433 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2435 else if (SC_IS_SBSS (ext_in->asym.sc))
2438 svalue += ANOFFSET (objfile->section_offsets,
2439 get_section_index (objfile, ".sbss"));
2447 /* On certain platforms, some extra label symbols can be
2448 generated by the linker. One possible usage for this kind
2449 of symbols is to represent the address of the begining of a
2450 given section. For instance, on Tru64 5.1, the address of
2451 the _ftext label is the start address of the .text section.
2453 The storage class of these symbols is usually directly
2454 related to the section to which the symbol refers. For
2455 instance, on Tru64 5.1, the storage class for the _fdata
2456 label is scData, refering to the .data section.
2458 It is actually possible that the section associated to the
2459 storage class of the label does not exist. On True64 5.1
2460 for instance, the libm.so shared library does not contain
2461 any .data section, although it contains a _fpdata label
2462 which storage class is scData... Since these symbols are
2463 usually useless for the debugger user anyway, we just
2464 discard these symbols.
2467 if (SC_IS_TEXT (ext_in->asym.sc))
2469 if (objfile->sect_index_text == -1)
2472 ms_type = mst_file_text;
2473 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2475 else if (SC_IS_DATA (ext_in->asym.sc))
2477 if (objfile->sect_index_data == -1)
2480 ms_type = mst_file_data;
2481 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2483 else if (SC_IS_BSS (ext_in->asym.sc))
2485 if (objfile->sect_index_bss == -1)
2488 ms_type = mst_file_bss;
2489 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2491 else if (SC_IS_SBSS (ext_in->asym.sc))
2493 const int sbss_sect_index = get_section_index (objfile, ".sbss");
2495 if (sbss_sect_index == -1)
2498 ms_type = mst_file_bss;
2499 svalue += ANOFFSET (objfile->section_offsets, sbss_sect_index);
2506 /* The alpha has the section start addresses in stLocal symbols
2507 whose name starts with a `.'. Skip those but complain for all
2508 other stLocal symbols.
2509 Irix6 puts the section start addresses in stNil symbols, skip
2515 ms_type = mst_unknown;
2516 unknown_ext_complaint (name);
2518 if (!ECOFF_IN_ELF (cur_bfd))
2519 prim_record_minimal_symbol (name, svalue, ms_type, objfile);
2522 /* Pass 3 over files, over local syms: fill in static symbols */
2523 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2525 struct partial_symtab *save_pst;
2529 cur_fdr = fh = debug_info->fdr + f_idx;
2533 fdr_to_pst[f_idx].pst = NULL;
2537 /* Determine the start address for this object file from the
2538 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2542 if (relocatable || textlow != 0)
2543 textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2547 pst = start_psymtab_common (objfile, objfile->section_offsets,
2550 objfile->global_psymbols.next,
2551 objfile->static_psymbols.next);
2552 pst->read_symtab_private = ((char *)
2553 obstack_alloc (&objfile->psymbol_obstack,
2554 sizeof (struct symloc)));
2555 memset (pst->read_symtab_private, 0, sizeof (struct symloc));
2558 FDR_IDX (pst) = f_idx;
2559 CUR_BFD (pst) = cur_bfd;
2560 DEBUG_SWAP (pst) = debug_swap;
2561 DEBUG_INFO (pst) = debug_info;
2562 PENDING_LIST (pst) = pending_list;
2564 /* The way to turn this into a symtab is to call... */
2565 pst->read_symtab = mdebug_psymtab_to_symtab;
2567 /* Set up language for the pst.
2568 The language from the FDR is used if it is unambigious (e.g. cfront
2569 with native cc and g++ will set the language to C).
2570 Otherwise we have to deduce the language from the filename.
2571 Native ecoff has every header file in a separate FDR, so
2572 deduce_language_from_filename will return language_unknown for
2573 a header file, which is not what we want.
2574 But the FDRs for the header files are after the FDR for the source
2575 file, so we can assign the language of the source file to the
2576 following header files. Then we save the language in the private
2577 pst data so that we can reuse it when building symtabs. */
2578 prev_language = psymtab_language;
2582 case langCplusplusV2:
2583 psymtab_language = language_cplus;
2586 psymtab_language = deduce_language_from_filename (fdr_name (fh));
2589 if (psymtab_language == language_unknown)
2590 psymtab_language = prev_language;
2591 PST_PRIVATE (pst)->pst_language = psymtab_language;
2593 pst->texthigh = pst->textlow;
2595 /* For stabs-in-ecoff files, the second symbol must be @stab.
2596 This symbol is emitted by mips-tfile to signal that the
2597 current object file uses encapsulated stabs instead of mips
2598 ecoff for local symbols. (It is the second symbol because
2599 the first symbol is the stFile used to signal the start of a
2601 processing_gcc_compilation = 0;
2604 (*swap_sym_in) (cur_bfd,
2605 ((char *) debug_info->external_sym
2606 + (fh->isymBase + 1) * external_sym_size),
2608 if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol))
2609 processing_gcc_compilation = 2;
2612 if (processing_gcc_compilation != 0)
2614 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
2619 (*swap_sym_in) (cur_bfd,
2620 (((char *) debug_info->external_sym)
2621 + (fh->isymBase + cur_sdx) * external_sym_size),
2623 type_code = ECOFF_UNMARK_STAB (sh.index);
2624 if (!ECOFF_IS_STAB (&sh))
2626 if (sh.st == stProc || sh.st == stStaticProc)
2631 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2632 if (sh.st == stStaticProc)
2634 namestring = debug_info->ss + fh->issBase + sh.iss;
2635 prim_record_minimal_symbol_and_info (namestring,
2639 SECT_OFF_TEXT (objfile),
2643 procaddr = sh.value;
2645 isym = AUX_GET_ISYM (fh->fBigendian,
2646 (debug_info->external_aux
2649 (*swap_sym_in) (cur_bfd,
2650 ((char *) debug_info->external_sym
2651 + ((fh->isymBase + isym - 1)
2652 * external_sym_size)),
2656 CORE_ADDR high = procaddr + sh.value;
2658 /* Kludge for Irix 5.2 zero fh->adr. */
2660 && (pst->textlow == 0 || procaddr < pst->textlow))
2661 pst->textlow = procaddr;
2662 if (high > pst->texthigh)
2663 pst->texthigh = high;
2666 else if (sh.st == stStatic)
2681 namestring = debug_info->ss + fh->issBase + sh.iss;
2682 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2683 prim_record_minimal_symbol_and_info (namestring,
2687 SECT_OFF_DATA (objfile),
2693 /* FIXME! Shouldn't this use cases for bss,
2694 then have the default be abs? */
2695 namestring = debug_info->ss + fh->issBase + sh.iss;
2696 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2697 prim_record_minimal_symbol_and_info (namestring,
2701 SECT_OFF_BSS (objfile),
2709 /* Handle stabs continuation */
2711 char *stabstring = debug_info->ss + fh->issBase + sh.iss;
2712 int len = strlen (stabstring);
2713 while (stabstring[len - 1] == '\\')
2716 char *stabstring1 = stabstring;
2720 /* Ignore continuation char from 1st string */
2723 /* Read next stabstring */
2725 (*swap_sym_in) (cur_bfd,
2726 (((char *) debug_info->external_sym)
2727 + (fh->isymBase + cur_sdx)
2728 * external_sym_size),
2730 stabstring2 = debug_info->ss + fh->issBase + sh2.iss;
2731 len2 = strlen (stabstring2);
2733 /* Concatinate stabstring2 with stabstring1 */
2735 && stabstring != debug_info->ss + fh->issBase + sh.iss)
2736 stabstring = xrealloc (stabstring, len + len2 + 1);
2739 stabstring = xmalloc (len + len2 + 1);
2740 strcpy (stabstring, stabstring1);
2742 strcpy (stabstring + len, stabstring2);
2750 * Standard, external, non-debugger, symbols
2753 case N_TEXT | N_EXT:
2754 case N_NBTEXT | N_EXT:
2755 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2758 case N_DATA | N_EXT:
2759 case N_NBDATA | N_EXT:
2760 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2765 case N_NBBSS | N_EXT:
2766 case N_SETV | N_EXT: /* FIXME, is this in BSS? */
2767 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2774 /* Standard, local, non-debugger, symbols */
2778 /* We need to be able to deal with both N_FN or N_TEXT,
2779 because we have no way of knowing whether the sys-supplied ld
2780 or GNU ld was used to make the executable. Sequents throw
2781 in another wrinkle -- they renumbered N_FN. */
2789 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2792 case N_UNDF | N_EXT:
2793 continue; /* Just undefined, not COMMON */
2798 /* Lots of symbol types we can just ignore. */
2805 /* Keep going . . . */
2808 * Special symbol types for GNU
2811 case N_INDR | N_EXT:
2813 case N_SETA | N_EXT:
2815 case N_SETT | N_EXT:
2817 case N_SETD | N_EXT:
2819 case N_SETB | N_EXT:
2830 static int prev_so_symnum = -10;
2831 static int first_so_symnum;
2833 int prev_textlow_not_set;
2835 valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2837 prev_textlow_not_set = textlow_not_set;
2839 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2840 /* A zero value is probably an indication for the SunPRO 3.0
2841 compiler. end_psymtab explicitly tests for zero, so
2842 don't relocate it. */
2846 textlow_not_set = 1;
2850 textlow_not_set = 0;
2852 textlow_not_set = 0;
2854 past_first_source_file = 1;
2856 if (prev_so_symnum != symnum - 1)
2857 { /* Here if prev stab wasn't N_SO */
2858 first_so_symnum = symnum;
2862 pst = (struct partial_symtab *) 0;
2864 dependencies_used = 0;
2868 prev_so_symnum = symnum;
2870 /* End the current partial symtab and start a new one */
2872 /* SET_NAMESTRING ();*/
2873 namestring = stabstring;
2875 /* Null name means end of .o file. Don't start a new one. */
2876 if (*namestring == '\000')
2879 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2880 The first one is a directory name; the second the file name.
2881 If pst exists, is empty, and has a filename ending in '/',
2882 we assume the previous N_SO was a directory name. */
2884 p = strrchr (namestring, '/');
2885 if (p && *(p + 1) == '\000')
2886 continue; /* Simply ignore directory name SOs */
2888 /* Some other compilers (C++ ones in particular) emit useless
2889 SOs for non-existant .c files. We ignore all subsequent SOs that
2890 immediately follow the first. */
2902 enum language tmp_language;
2903 /* Mark down an include file in the current psymtab */
2905 /* SET_NAMESTRING ();*/
2906 namestring = stabstring;
2908 tmp_language = deduce_language_from_filename (namestring);
2910 /* Only change the psymtab's language if we've learned
2911 something useful (eg. tmp_language is not language_unknown).
2912 In addition, to match what start_subfile does, never change
2914 if (tmp_language != language_unknown
2915 && (tmp_language != language_c
2916 || psymtab_language != language_cplus))
2917 psymtab_language = tmp_language;
2919 /* In C++, one may expect the same filename to come round many
2920 times, when code is coming alternately from the main file
2921 and from inline functions in other files. So I check to see
2922 if this is a file we've seen before -- either the main
2923 source file, or a previously included file.
2925 This seems to be a lot of time to be spending on N_SOL, but
2926 things like "break c-exp.y:435" need to work (I
2927 suppose the psymtab_include_list could be hashed or put
2928 in a binary tree, if profiling shows this is a major hog). */
2929 if (pst && STREQ (namestring, pst->filename))
2933 for (i = 0; i < includes_used; i++)
2934 if (STREQ (namestring, psymtab_include_list[i]))
2943 psymtab_include_list[includes_used++] = namestring;
2944 if (includes_used >= includes_allocated)
2946 char **orig = psymtab_include_list;
2948 psymtab_include_list = (char **)
2949 alloca ((includes_allocated *= 2) *
2951 memcpy ((PTR) psymtab_include_list, (PTR) orig,
2952 includes_used * sizeof (char *));
2956 case N_LSYM: /* Typedef or automatic variable. */
2957 case N_STSYM: /* Data seg var -- static */
2958 case N_LCSYM: /* BSS " */
2959 case N_ROSYM: /* Read-only data seg var -- static. */
2960 case N_NBSTS: /* Gould nobase. */
2961 case N_NBLCS: /* symbols. */
2963 case N_GSYM: /* Global (extern) variable; can be
2964 data or bss (sigh FIXME). */
2966 /* Following may probably be ignored; I'll leave them here
2967 for now (until I do Pascal and Modula 2 extensions). */
2969 case N_PC: /* I may or may not need this; I
2971 case N_M2C: /* I suspect that I can ignore this here. */
2972 case N_SCOPE: /* Same. */
2974 /* SET_NAMESTRING ();*/
2975 namestring = stabstring;
2976 p = (char *) strchr (namestring, ':');
2978 continue; /* Not a debugging symbol. */
2982 /* Main processing section for debugging symbols which
2983 the initial read through the symbol tables needs to worry
2984 about. If we reach this point, the symbol which we are
2985 considering is definitely one we are interested in.
2986 p must also contain the (valid) index into the namestring
2987 which indicates the debugging type symbol. */
2992 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2993 #ifdef STATIC_TRANSFORM_NAME
2994 namestring = STATIC_TRANSFORM_NAME (namestring);
2996 add_psymbol_to_list (namestring, p - namestring,
2997 VAR_NAMESPACE, LOC_STATIC,
2998 &objfile->static_psymbols,
3000 psymtab_language, objfile);
3003 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3004 /* The addresses in these entries are reported to be
3005 wrong. See the code that reads 'G's for symtabs. */
3006 add_psymbol_to_list (namestring, p - namestring,
3007 VAR_NAMESPACE, LOC_STATIC,
3008 &objfile->global_psymbols,
3010 psymtab_language, objfile);
3014 /* When a 'T' entry is defining an anonymous enum, it
3015 may have a name which is the empty string, or a
3016 single space. Since they're not really defining a
3017 symbol, those shouldn't go in the partial symbol
3018 table. We do pick up the elements of such enums at
3019 'check_enum:', below. */
3020 if (p >= namestring + 2
3021 || (p == namestring + 1
3022 && namestring[0] != ' '))
3024 add_psymbol_to_list (namestring, p - namestring,
3025 STRUCT_NAMESPACE, LOC_TYPEDEF,
3026 &objfile->static_psymbols,
3028 psymtab_language, objfile);
3031 /* Also a typedef with the same name. */
3032 add_psymbol_to_list (namestring, p - namestring,
3033 VAR_NAMESPACE, LOC_TYPEDEF,
3034 &objfile->static_psymbols,
3036 psymtab_language, objfile);
3039 /* The semantics of C++ state that "struct foo { ... }"
3040 also defines a typedef for "foo". Unfortuantely, cfront
3041 never makes the typedef when translating from C++ to C.
3042 We make the typedef here so that "ptype foo" works as
3043 expected for cfront translated code. */
3044 else if (psymtab_language == language_cplus)
3046 /* Also a typedef with the same name. */
3047 add_psymbol_to_list (namestring, p - namestring,
3048 VAR_NAMESPACE, LOC_TYPEDEF,
3049 &objfile->static_psymbols,
3051 psymtab_language, objfile);
3056 if (p != namestring) /* a name is there, not just :T... */
3058 add_psymbol_to_list (namestring, p - namestring,
3059 VAR_NAMESPACE, LOC_TYPEDEF,
3060 &objfile->static_psymbols,
3062 psymtab_language, objfile);
3065 /* If this is an enumerated type, we need to
3066 add all the enum constants to the partial symbol
3067 table. This does not cover enums without names, e.g.
3068 "enum {a, b} c;" in C, but fortunately those are
3069 rare. There is no way for GDB to find those from the
3070 enum type without spending too much time on it. Thus
3071 to solve this problem, the compiler needs to put out the
3072 enum in a nameless type. GCC2 does this. */
3074 /* We are looking for something of the form
3075 <name> ":" ("t" | "T") [<number> "="] "e"
3076 {<constant> ":" <value> ","} ";". */
3078 /* Skip over the colon and the 't' or 'T'. */
3080 /* This type may be given a number. Also, numbers can come
3081 in pairs like (0,26). Skip over it. */
3082 while ((*p >= '0' && *p <= '9')
3083 || *p == '(' || *p == ',' || *p == ')'
3089 /* The aix4 compiler emits extra crud before the members. */
3092 /* Skip over the type (?). */
3096 /* Skip over the colon. */
3100 /* We have found an enumerated type. */
3101 /* According to comments in read_enum_type
3102 a comma could end it instead of a semicolon.
3103 I don't know where that happens.
3105 while (*p && *p != ';' && *p != ',')
3109 /* Check for and handle cretinous dbx symbol name
3111 if (*p == '\\' || (*p == '?' && p[1] == '\0'))
3112 p = next_symbol_text (objfile);
3114 /* Point to the character after the name
3115 of the enum constant. */
3116 for (q = p; *q && *q != ':'; q++)
3118 /* Note that the value doesn't matter for
3119 enum constants in psymtabs, just in symtabs. */
3120 add_psymbol_to_list (p, q - p,
3121 VAR_NAMESPACE, LOC_CONST,
3122 &objfile->static_psymbols, 0,
3123 0, psymtab_language, objfile);
3124 /* Point past the name. */
3126 /* Skip over the value. */
3127 while (*p && *p != ',')
3129 /* Advance past the comma. */
3136 /* Constant, e.g. from "const" in Pascal. */
3137 add_psymbol_to_list (namestring, p - namestring,
3138 VAR_NAMESPACE, LOC_CONST,
3139 &objfile->static_psymbols, sh.value,
3140 0, psymtab_language, objfile);
3146 int name_len = p - namestring;
3147 char *name = xmalloc (name_len + 1);
3148 memcpy (name, namestring, name_len);
3149 name[name_len] = '\0';
3150 function_outside_compilation_unit_complaint (name);
3153 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3154 add_psymbol_to_list (namestring, p - namestring,
3155 VAR_NAMESPACE, LOC_BLOCK,
3156 &objfile->static_psymbols,
3158 psymtab_language, objfile);
3161 /* Global functions were ignored here, but now they
3162 are put into the global psymtab like one would expect.
3163 They're also in the minimal symbol table. */
3167 int name_len = p - namestring;
3168 char *name = xmalloc (name_len + 1);
3169 memcpy (name, namestring, name_len);
3170 name[name_len] = '\0';
3171 function_outside_compilation_unit_complaint (name);
3174 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3175 add_psymbol_to_list (namestring, p - namestring,
3176 VAR_NAMESPACE, LOC_BLOCK,
3177 &objfile->global_psymbols,
3179 psymtab_language, objfile);
3182 /* Two things show up here (hopefully); static symbols of
3183 local scope (static used inside braces) or extensions
3184 of structure symbols. We can ignore both. */
3198 case '#': /* for symbol identification (used in live ranges) */
3199 /* added to support cfront stabs strings */
3200 case 'Z': /* for definition continuations */
3201 case 'P': /* for prototypes */
3205 /* It is a C++ nested symbol. We don't need to record it
3206 (I don't think); if we try to look up foo::bar::baz,
3207 then symbols for the symtab containing foo should get
3208 read in, I think. */
3209 /* Someone says sun cc puts out symbols like
3210 /foo/baz/maclib::/usr/local/bin/maclib,
3211 which would get here with a symbol type of ':'. */
3215 /* Unexpected symbol descriptor. The second and subsequent stabs
3216 of a continued stab can show up here. The question is
3217 whether they ever can mimic a normal stab--it would be
3218 nice if not, since we certainly don't want to spend the
3219 time searching to the end of every string looking for
3222 complaint (&symfile_complaints,
3223 "unknown symbol descriptor `%c'", p[1]);
3225 /* Ignore it; perhaps it is an extension that we don't
3234 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3235 /* Solaris 2 end of module, finish current partial
3236 symbol table. END_PSYMTAB will set
3237 pst->texthigh to the proper value, which is
3238 necessary if a module compiled without
3239 debugging info follows this module. */
3242 pst = (struct partial_symtab *) 0;
3244 dependencies_used = 0;
3250 if (sh.value > save_pst->texthigh)
3251 save_pst->texthigh = sh.value;
3256 case N_SSYM: /* Claim: Structure or union element.
3257 Hopefully, I can ignore this. */
3258 case N_ENTRY: /* Alternate entry point; can ignore. */
3259 case N_MAIN: /* Can definitely ignore this. */
3260 case N_CATCH: /* These are GNU C++ extensions */
3261 case N_EHDECL: /* that can safely be ignored here. */
3271 case N_NSYMS: /* Ultrix 4.0: symbol count */
3272 case N_DEFD: /* GNU Modula-2 */
3273 case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
3275 case N_OBJ: /* useless types from Solaris */
3277 /* These symbols aren't interesting; don't worry about them */
3282 /* If we haven't found it yet, ignore it. It's probably some
3283 new type we don't know about yet. */
3284 complaint (&symfile_complaints, "unknown symbol type %s",
3285 local_hex_string (type_code)); /*CUR_SYMBOL_TYPE*/
3289 && stabstring != debug_info->ss + fh->issBase + sh.iss)
3292 /* end - Handle continuation */
3297 for (cur_sdx = 0; cur_sdx < fh->csym;)
3300 enum address_class class;
3302 (*swap_sym_in) (cur_bfd,
3303 ((char *) debug_info->external_sym
3304 + ((fh->isymBase + cur_sdx)
3305 * external_sym_size)),
3308 if (ECOFF_IS_STAB (&sh))
3314 /* Non absolute static symbols go into the minimal table. */
3315 if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil
3316 || (sh.index == indexNil
3317 && (sh.st != stStatic || sh.sc == scAbs)))
3319 /* FIXME, premature? */
3324 name = debug_info->ss + fh->issBase + sh.iss;
3330 /* The value of a stEnd symbol is the displacement from the
3331 corresponding start symbol value, do not relocate it. */
3333 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3340 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3344 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
3355 prim_record_minimal_symbol_and_info (name, sh.value,
3356 mst_file_text, NULL,
3357 SECT_OFF_TEXT (objfile), NULL,
3363 /* Ignore all parameter symbol records. */
3364 if (sh.index >= hdr->iauxMax)
3366 /* Should not happen, but does when cross-compiling
3367 with the MIPS compiler. FIXME -- pull later. */
3368 index_complaint (name);
3369 new_sdx = cur_sdx + 1; /* Don't skip at all */
3372 new_sdx = AUX_GET_ISYM (fh->fBigendian,
3373 (debug_info->external_aux
3377 if (new_sdx <= cur_sdx)
3379 /* This should not happen either... FIXME. */
3380 complaint (&symfile_complaints,
3381 "bad proc end in aux found from symbol %s",
3383 new_sdx = cur_sdx + 1; /* Don't skip backward */
3386 /* For stProc symbol records, we need to check the
3387 storage class as well, as only (stProc, scText)
3388 entries represent "real" procedures - See the
3389 Compaq document titled "Object File / Symbol Table
3390 Format Specification" for more information. If the
3391 storage class is not scText, we discard the whole
3392 block of symbol records for this stProc. */
3393 if (sh.st == stProc && sh.sc != scText)
3396 /* Usually there is a local and a global stProc symbol
3397 for a function. This means that the function name
3398 has already been entered into the mimimal symbol table
3399 while processing the global symbols in pass 2 above.
3400 One notable exception is the PROGRAM name from
3401 f77 compiled executables, it is only put out as
3402 local stProc symbol, and a global MAIN__ stProc symbol
3403 points to it. It doesn't matter though, as gdb is
3404 still able to find the PROGRAM name via the partial
3405 symbol table, and the MAIN__ symbol via the minimal
3407 if (sh.st == stProc)
3408 add_psymbol_to_list (name, strlen (name),
3409 VAR_NAMESPACE, LOC_BLOCK,
3410 &objfile->global_psymbols,
3411 0, sh.value, psymtab_language, objfile);
3413 add_psymbol_to_list (name, strlen (name),
3414 VAR_NAMESPACE, LOC_BLOCK,
3415 &objfile->static_psymbols,
3416 0, sh.value, psymtab_language, objfile);
3418 procaddr = sh.value;
3421 (*swap_sym_in) (cur_bfd,
3422 ((char *) debug_info->external_sym
3423 + ((fh->isymBase + cur_sdx - 1)
3424 * external_sym_size)),
3429 /* Kludge for Irix 5.2 zero fh->adr. */
3431 && (pst->textlow == 0 || procaddr < pst->textlow))
3432 pst->textlow = procaddr;
3434 high = procaddr + sh.value;
3435 if (high > pst->texthigh)
3436 pst->texthigh = high;
3439 case stStatic: /* Variable */
3440 if (SC_IS_DATA (sh.sc))
3441 prim_record_minimal_symbol_and_info (name, sh.value,
3442 mst_file_data, NULL,
3443 SECT_OFF_DATA (objfile),
3447 prim_record_minimal_symbol_and_info (name, sh.value,
3449 SECT_OFF_BSS (objfile),
3455 case stIndirect: /* Irix5 forward declaration */
3456 /* Skip forward declarations from Irix5 cc */
3459 case stTypedef: /* Typedef */
3460 /* Skip typedefs for forward declarations and opaque
3461 structs from alpha and mips cc. */
3462 if (sh.iss == 0 || has_opaque_xref (fh, &sh))
3464 class = LOC_TYPEDEF;
3467 case stConstant: /* Constant decl */
3474 case stBlock: /* { }, str, un, enum */
3475 /* Do not create a partial symbol for cc unnamed aggregates
3476 and gcc empty aggregates. */
3477 if ((sh.sc == scInfo
3478 || SC_IS_COMMON (sh.sc))
3480 && sh.index != cur_sdx + 2)
3482 add_psymbol_to_list (name, strlen (name),
3483 STRUCT_NAMESPACE, LOC_TYPEDEF,
3484 &objfile->static_psymbols,
3486 psymtab_language, objfile);
3488 handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);
3490 /* Skip over the block */
3492 if (new_sdx <= cur_sdx)
3494 /* This happens with the Ultrix kernel. */
3495 complaint (&symfile_complaints,
3496 "bad aux index at block symbol %s", name);
3497 new_sdx = cur_sdx + 1; /* Don't skip backward */
3502 case stFile: /* File headers */
3503 case stLabel: /* Labels */
3504 case stEnd: /* Ends of files */
3507 case stLocal: /* Local variables */
3508 /* Normally these are skipped because we skip over
3509 all blocks we see. However, these can occur
3510 as visible symbols in a .h file that contains code. */
3514 /* Both complaints are valid: one gives symbol name,
3515 the other the offending symbol type. */
3516 complaint (&symfile_complaints, "unknown local symbol %s",
3518 complaint (&symfile_complaints, "with type %d", sh.st);
3522 /* Use this gdb symbol */
3523 add_psymbol_to_list (name, strlen (name),
3524 VAR_NAMESPACE, class,
3525 &objfile->static_psymbols,
3526 0, sh.value, psymtab_language, objfile);
3528 cur_sdx++; /* Go to next file symbol */
3531 /* Now do enter the external symbols. */
3532 ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
3533 cur_sdx = fdr_to_pst[f_idx].n_globals;
3534 PST_PRIVATE (save_pst)->extern_count = cur_sdx;
3535 PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
3536 for (; --cur_sdx >= 0; ext_ptr++)
3538 enum address_class class;
3543 if (ext_ptr->ifd != f_idx)
3544 internal_error (__FILE__, __LINE__, "failed internal consistency check");
3545 psh = &ext_ptr->asym;
3547 /* Do not add undefined symbols to the partial symbol table. */
3548 if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil)
3551 svalue = psh->value;
3556 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3563 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3567 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
3574 /* These are generated for static symbols in .o files,
3579 /* External procedure symbols have been entered
3580 into the minimal symbol table in pass 2 above.
3581 Ignore them, as parse_external will ignore them too. */
3587 unknown_ext_complaint (debug_info->ssext + psh->iss);
3588 /* Fall through, pretend it's global. */
3590 /* Global common symbols are resolved by the runtime loader,
3592 if (SC_IS_COMMON (psh->sc))
3598 name = debug_info->ssext + psh->iss;
3599 add_psymbol_to_list (name, strlen (name),
3600 VAR_NAMESPACE, class,
3601 &objfile->global_psymbols,
3603 psymtab_language, objfile);
3607 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3608 empty and put on the free list. */
3609 fdr_to_pst[f_idx].pst = end_psymtab (save_pst,
3610 psymtab_include_list, includes_used,
3611 -1, save_pst->texthigh,
3612 dependency_list, dependencies_used, textlow_not_set);
3614 dependencies_used = 0;
3616 if (objfile->ei.entry_point >= save_pst->textlow &&
3617 objfile->ei.entry_point < save_pst->texthigh)
3619 objfile->ei.entry_file_lowpc = save_pst->textlow;
3620 objfile->ei.entry_file_highpc = save_pst->texthigh;
3623 /* The objfile has its functions reordered if this partial symbol
3624 table overlaps any other partial symbol table.
3625 We cannot assume a reordered objfile if a partial symbol table
3626 is contained within another partial symbol table, as partial symbol
3627 tables for include files with executable code are contained
3628 within the partial symbol table for the including source file,
3629 and we do not want to flag the objfile reordered for these cases.
3631 This strategy works well for Irix-5.2 shared libraries, but we
3632 might have to use a more elaborate (and slower) algorithm for
3634 save_pst = fdr_to_pst[f_idx].pst;
3635 if (save_pst != NULL
3636 && save_pst->textlow != 0
3637 && !(objfile->flags & OBJF_REORDERED))
3639 ALL_OBJFILE_PSYMTABS (objfile, pst)
3642 && save_pst->textlow >= pst->textlow
3643 && save_pst->textlow < pst->texthigh
3644 && save_pst->texthigh > pst->texthigh)
3646 objfile->flags |= OBJF_REORDERED;
3653 /* Now scan the FDRs for dependencies */
3654 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
3656 fh = f_idx + debug_info->fdr;
3657 pst = fdr_to_pst[f_idx].pst;
3659 if (pst == (struct partial_symtab *) NULL)
3662 /* This should catch stabs-in-ecoff. */
3666 /* Skip the first file indirect entry as it is a self dependency
3667 for source files or a reverse .h -> .c dependency for header files. */
3668 pst->number_of_dependencies = 0;
3670 ((struct partial_symtab **)
3671 obstack_alloc (&objfile->psymbol_obstack,
3673 * sizeof (struct partial_symtab *))));
3674 for (s_idx = 1; s_idx < fh->crfd; s_idx++)
3678 (*swap_rfd_in) (cur_bfd,
3679 ((char *) debug_info->external_rfd
3680 + (fh->rfdBase + s_idx) * external_rfd_size),
3682 if (rh < 0 || rh >= hdr->ifdMax)
3684 complaint (&symfile_complaints, "bad file number %ld", rh);
3688 /* Skip self dependencies of header files. */
3692 /* Do not add to dependeny list if psymtab was empty. */
3693 if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL)
3695 pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;
3699 /* Remove the dummy psymtab created for -O3 images above, if it is
3700 still empty, to enable the detection of stripped executables. */
3701 if (objfile->psymtabs->next == NULL
3702 && objfile->psymtabs->number_of_dependencies == 0
3703 && objfile->psymtabs->n_global_syms == 0
3704 && objfile->psymtabs->n_static_syms == 0)
3705 objfile->psymtabs = NULL;
3706 do_cleanups (old_chain);
3709 /* If the current psymbol has an enumerated type, we need to add
3710 all the the enum constants to the partial symbol table. */
3713 handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype,
3716 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
3717 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
3718 char *ext_sym = ((char *) debug_info->external_sym
3719 + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
3729 /* It is an enumerated type if the next symbol entry is a stMember
3730 and its auxiliary index is indexNil or its auxiliary entry
3731 is a plain btNil or btVoid.
3732 Alpha cc -migrate enums are recognized by a zero index and
3733 a zero symbol value.
3734 DU 4.0 cc enums are recognized by a member type of btEnum without
3735 qualifiers and a zero symbol value. */
3736 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3737 if (sh.st != stMember)
3740 if (sh.index == indexNil
3741 || (sh.index == 0 && svalue == 0))
3743 (*debug_swap->swap_tir_in) (fh->fBigendian,
3744 &(debug_info->external_aux
3745 + fh->iauxBase + sh.index)->a_ti,
3747 if ((tir.bt != btNil
3749 && (tir.bt != btEnum || svalue != 0))
3750 || tir.tq0 != tqNil)
3762 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3763 if (sh.st != stMember)
3765 name = debug_info->ss + cur_fdr->issBase + sh.iss;
3767 /* Note that the value doesn't matter for enum constants
3768 in psymtabs, just in symtabs. */
3769 add_psymbol_to_list (name, strlen (name),
3770 VAR_NAMESPACE, LOC_CONST,
3771 &objfile->static_psymbols, 0,
3772 (CORE_ADDR) 0, psymtab_language, objfile);
3773 ext_sym += external_sym_size;
3777 /* Get the next symbol. OBJFILE is unused. */
3780 mdebug_next_symbol_text (struct objfile *objfile)
3785 (*debug_swap->swap_sym_in) (cur_bfd,
3786 ((char *) debug_info->external_sym
3787 + ((cur_fdr->isymBase + cur_sdx)
3788 * debug_swap->external_sym_size)),
3790 return debug_info->ss + cur_fdr->issBase + sh.iss;
3793 /* Ancillary function to psymtab_to_symtab(). Does all the work
3794 for turning the partial symtab PST into a symtab, recurring
3795 first on all dependent psymtabs. The argument FILENAME is
3796 only passed so we can see in debug stack traces what file
3799 This function has a split personality, based on whether the
3800 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3801 The flow of control and even the memory allocation differs. FIXME. */
3804 psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename)
3806 bfd_size_type external_sym_size;
3807 bfd_size_type external_pdr_size;
3808 void (*swap_sym_in) (bfd *, void *, SYMR *);
3809 void (*swap_pdr_in) (bfd *, void *, PDR *);
3811 struct symtab *st = NULL;
3813 struct linetable *lines;
3814 CORE_ADDR lowest_pdr_addr = 0;
3815 int last_symtab_ended = 0;
3821 /* Read in all partial symbtabs on which this one is dependent.
3822 NOTE that we do have circular dependencies, sigh. We solved
3823 that by setting pst->readin before this point. */
3825 for (i = 0; i < pst->number_of_dependencies; i++)
3826 if (!pst->dependencies[i]->readin)
3828 /* Inform about additional files to be read in. */
3831 fputs_filtered (" ", gdb_stdout);
3833 fputs_filtered ("and ", gdb_stdout);
3835 printf_filtered ("%s...",
3836 pst->dependencies[i]->filename);
3837 wrap_here (""); /* Flush output */
3838 gdb_flush (gdb_stdout);
3840 /* We only pass the filename for debug purposes */
3841 psymtab_to_symtab_1 (pst->dependencies[i],
3842 pst->dependencies[i]->filename);
3845 /* Do nothing if this is a dummy psymtab. */
3847 if (pst->n_global_syms == 0 && pst->n_static_syms == 0
3848 && pst->textlow == 0 && pst->texthigh == 0)
3851 /* Now read the symbols for this symtab */
3853 cur_bfd = CUR_BFD (pst);
3854 debug_swap = DEBUG_SWAP (pst);
3855 debug_info = DEBUG_INFO (pst);
3856 pending_list = PENDING_LIST (pst);
3857 external_sym_size = debug_swap->external_sym_size;
3858 external_pdr_size = debug_swap->external_pdr_size;
3859 swap_sym_in = debug_swap->swap_sym_in;
3860 swap_pdr_in = debug_swap->swap_pdr_in;
3861 current_objfile = pst->objfile;
3862 cur_fd = FDR_IDX (pst);
3863 fh = ((cur_fd == -1)
3865 : debug_info->fdr + cur_fd);
3868 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3869 processing_gcc_compilation = 0;
3870 if (fh != (FDR *) NULL && fh->csym >= 2)
3874 (*swap_sym_in) (cur_bfd,
3875 ((char *) debug_info->external_sym
3876 + (fh->isymBase + 1) * external_sym_size),
3878 if (STREQ (debug_info->ss + fh->issBase + sh.iss,
3881 /* We indicate that this is a GCC compilation so that certain
3882 features will be enabled in stabsread/dbxread. */
3883 processing_gcc_compilation = 2;
3887 if (processing_gcc_compilation != 0)
3890 /* This symbol table contains stabs-in-ecoff entries. */
3892 /* Parse local symbols first */
3894 if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
3896 current_objfile = NULL;
3899 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
3905 (*swap_sym_in) (cur_bfd,
3906 (((char *) debug_info->external_sym)
3907 + (fh->isymBase + cur_sdx) * external_sym_size),
3909 name = debug_info->ss + fh->issBase + sh.iss;
3911 /* XXX This is a hack. It will go away! */
3912 if (ECOFF_IS_STAB (&sh) || (name[0] == '#'))
3914 int type_code = ECOFF_UNMARK_STAB (sh.index);
3916 /* We should never get non N_STAB symbols here, but they
3917 should be harmless, so keep process_one_symbol from
3918 complaining about them. */
3919 if (type_code & N_STAB)
3921 /* If we found a trailing N_SO with no name, process
3922 it here instead of in process_one_symbol, so we
3923 can keep a handle to its symtab. The symtab
3924 would otherwise be ended twice, once in
3925 process_one_symbol, and once after this loop. */
3926 if (type_code == N_SO
3928 && previous_stab_code != (unsigned char) N_SO
3931 valu += ANOFFSET (pst->section_offsets,
3932 SECT_OFF_TEXT (pst->objfile));
3933 previous_stab_code = N_SO;
3934 st = end_symtab (valu, pst->objfile,
3935 SECT_OFF_TEXT (pst->objfile));
3937 last_symtab_ended = 1;
3941 last_symtab_ended = 0;
3942 process_one_symbol (type_code, 0, valu, name,
3943 pst->section_offsets, pst->objfile);
3946 /* Similarly a hack. */
3947 else if (name[0] == '#')
3949 process_one_symbol (N_SLINE, 0, valu, name,
3950 pst->section_offsets, pst->objfile);
3952 if (type_code == N_FUN)
3954 /* Make up special symbol to contain
3955 procedure specific info */
3956 struct mips_extra_func_info *e =
3957 ((struct mips_extra_func_info *)
3958 obstack_alloc (¤t_objfile->symbol_obstack,
3959 sizeof (struct mips_extra_func_info)));
3960 struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);
3962 memset (e, 0, sizeof (struct mips_extra_func_info));
3963 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
3964 SYMBOL_CLASS (s) = LOC_CONST;
3965 SYMBOL_TYPE (s) = mdebug_type_void;
3966 SYMBOL_VALUE (s) = (long) e;
3967 e->pdr.framereg = -1;
3968 add_symbol_to_list (s, &local_symbols);
3971 else if (sh.st == stLabel)
3973 if (sh.index == indexNil)
3975 /* This is what the gcc2_compiled and __gnu_compiled_*
3976 show up as. So don't complain. */
3981 /* Handle encoded stab line number. */
3982 valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile));
3983 record_line (current_subfile, sh.index, valu);
3986 else if (sh.st == stProc || sh.st == stStaticProc
3987 || sh.st == stStatic || sh.st == stEnd)
3988 /* These are generated by gcc-2.x, do not complain */
3991 complaint (&symfile_complaints, "unknown stabs symbol %s", name);
3994 if (! last_symtab_ended)
3996 st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT (pst->objfile));
4000 /* Sort the symbol table now, we are done adding symbols to it.
4001 We must do this before parse_procedure calls lookup_symbol. */
4002 sort_symtab_syms (st);
4004 /* There used to be a call to sort_blocks here, but this should not
4005 be necessary for stabs symtabs. And as sort_blocks modifies the
4006 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4007 it did the wrong thing if the first procedure in a file was
4008 generated via asm statements. */
4010 /* Fill in procedure info next. */
4014 struct cleanup *old_chain;
4020 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
4021 old_chain = make_cleanup (xfree, pr_block);
4023 pdr_ptr = ((char *) debug_info->external_pdr
4024 + fh->ipdFirst * external_pdr_size);
4025 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
4029 pdr_ptr += external_pdr_size, pdr_in++)
4031 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
4033 /* Determine lowest PDR address, the PDRs are not always
4035 if (pdr_in == pr_block)
4036 lowest_pdr_addr = pdr_in->adr;
4037 else if (pdr_in->adr < lowest_pdr_addr)
4038 lowest_pdr_addr = pdr_in->adr;
4042 pdr_in_end = pdr_in + fh->cpd;
4043 for (; pdr_in < pdr_in_end; pdr_in++)
4044 parse_procedure (pdr_in, st, pst);
4046 do_cleanups (old_chain);
4051 /* This symbol table contains ordinary ecoff entries. */
4057 /* How many symbols will we need */
4058 /* FIXME, this does not count enum values. */
4059 f_max = pst->n_global_syms + pst->n_static_syms;
4063 st = new_symtab ("unknown", f_max, 0, pst->objfile);
4067 f_max += fh->csym + fh->cpd;
4068 maxlines = 2 * fh->cline;
4069 st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);
4071 /* The proper language was already determined when building
4072 the psymtab, use it. */
4073 st->language = PST_PRIVATE (pst)->pst_language;
4076 psymtab_language = st->language;
4078 lines = LINETABLE (st);
4080 /* Get a new lexical context */
4082 push_parse_stack ();
4083 top_stack->cur_st = st;
4084 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),
4086 BLOCK_START (top_stack->cur_block) = pst->textlow;
4087 BLOCK_END (top_stack->cur_block) = 0;
4088 top_stack->blocktype = stFile;
4089 top_stack->maxsyms = 2 * f_max;
4090 top_stack->cur_type = 0;
4091 top_stack->procadr = 0;
4092 top_stack->numargs = 0;
4093 found_ecoff_debugging_info = 0;
4100 /* Parse local symbols first */
4101 sym_ptr = ((char *) debug_info->external_sym
4102 + fh->isymBase * external_sym_size);
4103 sym_end = sym_ptr + fh->csym * external_sym_size;
4104 while (sym_ptr < sym_end)
4109 (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
4110 c = parse_symbol (&sh,
4111 debug_info->external_aux + fh->iauxBase,
4112 sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
4113 sym_ptr += c * external_sym_size;
4116 /* Linenumbers. At the end, check if we can save memory.
4117 parse_lines has to look ahead an arbitrary number of PDR
4118 structures, so we swap them all first. */
4122 struct cleanup *old_chain;
4128 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
4130 old_chain = make_cleanup (xfree, pr_block);
4132 pdr_ptr = ((char *) debug_info->external_pdr
4133 + fh->ipdFirst * external_pdr_size);
4134 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
4138 pdr_ptr += external_pdr_size, pdr_in++)
4140 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
4142 /* Determine lowest PDR address, the PDRs are not always
4144 if (pdr_in == pr_block)
4145 lowest_pdr_addr = pdr_in->adr;
4146 else if (pdr_in->adr < lowest_pdr_addr)
4147 lowest_pdr_addr = pdr_in->adr;
4150 parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr);
4151 if (lines->nitems < fh->cline)
4152 lines = shrink_linetable (lines);
4154 /* Fill in procedure info next. */
4156 pdr_in_end = pdr_in + fh->cpd;
4157 for (; pdr_in < pdr_in_end; pdr_in++)
4158 parse_procedure (pdr_in, 0, pst);
4160 do_cleanups (old_chain);
4164 LINETABLE (st) = lines;
4166 /* .. and our share of externals.
4167 XXX use the global list to speed up things here. how?
4168 FIXME, Maybe quit once we have found the right number of ext's? */
4169 top_stack->cur_st = st;
4170 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
4172 top_stack->blocktype = stFile;
4174 = (debug_info->symbolic_header.isymMax
4175 + debug_info->symbolic_header.ipdMax
4176 + debug_info->symbolic_header.iextMax);
4178 ext_ptr = PST_PRIVATE (pst)->extern_tab;
4179 for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
4180 parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
4182 /* If there are undefined symbols, tell the user.
4183 The alpha has an undefined symbol for every symbol that is
4184 from a shared library, so tell the user only if verbose is on. */
4185 if (info_verbose && n_undef_symbols)
4187 printf_filtered ("File %s contains %d unresolved references:",
4188 st->filename, n_undef_symbols);
4189 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4190 n_undef_vars, n_undef_procs, n_undef_labels);
4191 n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
4198 /* Sort the symbol table now, we are done adding symbols to it. */
4199 sort_symtab_syms (st);
4204 /* Now link the psymtab and the symtab. */
4207 current_objfile = NULL;
4210 /* Ancillary parsing procedures. */
4212 /* Return 1 if the symbol pointed to by SH has a cross reference
4213 to an opaque aggregate type, else 0. */
4216 has_opaque_xref (FDR *fh, SYMR *sh)
4223 if (sh->index == indexNil)
4226 ax = debug_info->external_aux + fh->iauxBase + sh->index;
4227 (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
4228 if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
4232 (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
4233 if (rn->rfd == 0xfff)
4234 rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
4242 /* Lookup the type at relative index RN. Return it in TPP
4243 if found and in any event come up with its name PNAME.
4244 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4245 Return value says how many aux symbols we ate. */
4248 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. */
4249 char **pname, int bigend, char *sym_name)
4258 struct mdebug_pending *pend;
4260 *tpp = (struct type *) NULL;
4262 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
4264 /* Escape index means 'the next one' */
4265 if (rn->rfd == 0xfff)
4268 rf = AUX_GET_ISYM (bigend, ax + 1);
4275 /* mips cc uses a rf of -1 for opaque struct definitions.
4276 Set TYPE_FLAG_STUB for these types so that check_typedef will
4277 resolve them if the struct gets defined in another compilation unit. */
4280 *pname = "<undefined>";
4281 *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile);
4285 /* mips cc uses an escaped rn->index of 0 for struct return types
4286 of procedures that were compiled without -g. These will always remain
4288 if (rn->rfd == 0xfff && rn->index == 0)
4290 *pname = "<undefined>";
4294 /* Find the relative file descriptor and the symbol in it. */
4295 fh = get_rfd (fd, rf);
4296 xref_fd = fh - debug_info->fdr;
4298 if (rn->index >= fh->csym)
4300 /* File indirect entry is corrupt. */
4301 *pname = "<illegal>";
4302 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4306 /* If we have processed this symbol then we left a forwarding
4307 pointer to the type in the pending list. If not, we`ll put
4308 it in a list of pending types, to be processed later when
4309 the file will be. In any event, we collect the name for the
4312 esh = ((char *) debug_info->external_sym
4313 + ((fh->isymBase + rn->index)
4314 * debug_swap->external_sym_size));
4315 (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
4317 /* Make sure that this type of cross reference can be handled. */
4318 if ((sh.sc != scInfo
4319 || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
4320 && sh.st != stStruct && sh.st != stUnion
4321 && sh.st != stEnum))
4322 && (sh.st != stBlock || !SC_IS_COMMON (sh.sc)))
4324 /* File indirect entry is corrupt. */
4325 *pname = "<illegal>";
4326 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4330 *pname = debug_info->ss + fh->issBase + sh.iss;
4332 pend = is_pending_symbol (fh, esh);
4337 /* We have not yet seen this type. */
4339 if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
4343 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4345 a) forward declarations of structs/unions/enums which are not
4346 defined in this compilation unit.
4347 For these the type will be void. This is a bad design decision
4348 as cross referencing across compilation units is impossible
4349 due to the missing name.
4350 b) forward declarations of structs/unions/enums/typedefs which
4351 are defined later in this file or in another file in the same
4352 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4353 Simply cross reference those again to get the true type.
4354 The forward references are not entered in the pending list and
4355 in the symbol table. */
4357 (*debug_swap->swap_tir_in) (bigend,
4358 &(debug_info->external_aux
4359 + fh->iauxBase + sh.index)->a_ti,
4361 if (tir.tq0 != tqNil)
4362 complaint (&symfile_complaints,
4363 "illegal tq0 in forward typedef for %s", sym_name);
4367 *tpp = init_type (type_code, 0, 0, (char *) NULL,
4369 *pname = "<undefined>";
4376 (debug_info->external_aux
4377 + fh->iauxBase + sh.index + 1),
4378 tpp, type_code, pname,
4379 fh->fBigendian, sym_name);
4383 /* Follow a forward typedef. This might recursively
4384 call cross_ref till we get a non typedef'ed type.
4385 FIXME: This is not correct behaviour, but gdb currently
4386 cannot handle typedefs without type copying. Type
4387 copying is impossible as we might have mutual forward
4388 references between two files and the copied type would not
4389 get filled in when we later parse its definition. */
4390 *tpp = parse_type (xref_fd,
4391 debug_info->external_aux + fh->iauxBase,
4395 debug_info->ss + fh->issBase + sh.iss);
4396 add_pending (fh, esh, *tpp);
4400 complaint (&symfile_complaints,
4401 "illegal bt %d in forward typedef for %s", tir.bt,
4403 *tpp = init_type (type_code, 0, 0, (char *) NULL,
4409 else if (sh.st == stTypedef)
4411 /* Parse the type for a normal typedef. This might recursively call
4412 cross_ref till we get a non typedef'ed type.
4413 FIXME: This is not correct behaviour, but gdb currently
4414 cannot handle typedefs without type copying. But type copying is
4415 impossible as we might have mutual forward references between
4416 two files and the copied type would not get filled in when
4417 we later parse its definition. */
4418 *tpp = parse_type (xref_fd,
4419 debug_info->external_aux + fh->iauxBase,
4423 debug_info->ss + fh->issBase + sh.iss);
4427 /* Cross reference to a struct/union/enum which is defined
4428 in another file in the same compilation unit but that file
4429 has not been parsed yet.
4430 Initialize the type only, it will be filled in when
4431 it's definition is parsed. */
4432 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
4434 add_pending (fh, esh, *tpp);
4437 /* We used one auxent normally, two if we got a "next one" rf. */
4442 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4443 keeping the symtab sorted */
4445 static struct symbol *
4446 mylookup_symbol (char *name, register struct block *block,
4447 namespace_enum namespace, enum address_class class)
4453 ALL_BLOCK_SYMBOLS (block, i, sym)
4455 if (SYMBOL_NAME (sym)[0] == inc
4456 && SYMBOL_NAMESPACE (sym) == namespace
4457 && SYMBOL_CLASS (sym) == class
4458 && strcmp (SYMBOL_NAME (sym), name) == 0)
4462 block = BLOCK_SUPERBLOCK (block);
4464 return mylookup_symbol (name, block, namespace, class);
4469 /* Add a new symbol S to a block B.
4470 Infrequently, we will need to reallocate the block to make it bigger.
4471 We only detect this case when adding to top_stack->cur_block, since
4472 that's the only time we know how big the block is. FIXME. */
4475 add_symbol (struct symbol *s, struct block *b)
4477 int nsyms = BLOCK_NSYMS (b)++;
4478 struct block *origb;
4479 struct parse_stack *stackp;
4481 if (b == top_stack->cur_block &&
4482 nsyms >= top_stack->maxsyms)
4484 complaint (&symfile_complaints, "block containing %s overfilled",
4486 /* In this case shrink_block is actually grow_block, since
4487 BLOCK_NSYMS(b) is larger than its current size. */
4489 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
4491 /* Now run through the stack replacing pointers to the
4492 original block. shrink_block has already done this
4493 for the blockvector and BLOCK_FUNCTION. */
4494 for (stackp = top_stack; stackp; stackp = stackp->next)
4496 if (stackp->cur_block == origb)
4498 stackp->cur_block = b;
4499 stackp->maxsyms = BLOCK_NSYMS (b);
4503 BLOCK_SYM (b, nsyms) = s;
4506 /* Add a new block B to a symtab S */
4509 add_block (struct block *b, struct symtab *s)
4511 struct blockvector *bv = BLOCKVECTOR (s);
4513 bv = (struct blockvector *) xrealloc ((void *) bv,
4514 (sizeof (struct blockvector)
4515 + BLOCKVECTOR_NBLOCKS (bv)
4516 * sizeof (bv->block)));
4517 if (bv != BLOCKVECTOR (s))
4518 BLOCKVECTOR (s) = bv;
4520 BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
4523 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4524 MIPS' linenumber encoding might need more than one byte
4525 to describe it, LAST is used to detect these continuation lines.
4527 Combining lines with the same line number seems like a bad idea.
4528 E.g: There could be a line number entry with the same line number after the
4529 prologue and GDB should not ignore it (this is a better way to find
4530 a prologue than mips_skip_prologue).
4531 But due to the compressed line table format there are line number entries
4532 for the same line which are needed to bridge the gap to the next
4533 line number entry. These entries have a bogus address info with them
4534 and we are unable to tell them from intended duplicate line number
4536 This is another reason why -ggdb debugging format is preferable. */
4539 add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last)
4541 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4542 Change them to something sensible. */
4546 last = -2; /* make sure we record first line */
4548 if (last == lineno) /* skip continuation lines */
4551 lt->item[lt->nitems].line = lineno;
4552 lt->item[lt->nitems++].pc = adr << 2;
4556 /* Sorting and reordering procedures */
4558 /* Blocks with a smaller low bound should come first */
4561 compare_blocks (const void *arg1, const void *arg2)
4563 register int addr_diff;
4564 struct block **b1 = (struct block **) arg1;
4565 struct block **b2 = (struct block **) arg2;
4567 addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
4569 return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
4573 /* Sort the blocks of a symtab S.
4574 Reorder the blocks in the blockvector by code-address,
4575 as required by some MI search routines */
4578 sort_blocks (struct symtab *s)
4580 struct blockvector *bv = BLOCKVECTOR (s);
4582 if (BLOCKVECTOR_NBLOCKS (bv) <= 2)
4585 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
4586 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
4587 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
4588 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
4592 * This is very unfortunate: normally all functions are compiled in
4593 * the order they are found, but if the file is compiled -O3 things
4594 * are very different. It would be nice to find a reliable test
4595 * to detect -O3 images in advance.
4597 if (BLOCKVECTOR_NBLOCKS (bv) > 3)
4598 qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
4599 BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
4600 sizeof (struct block *),
4604 register CORE_ADDR high = 0;
4605 register int i, j = BLOCKVECTOR_NBLOCKS (bv);
4607 for (i = FIRST_LOCAL_BLOCK; i < j; i++)
4608 if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
4609 high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
4610 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
4613 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
4614 BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
4616 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4617 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4618 BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4619 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4623 /* Constructor/restructor/destructor procedures */
4625 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4626 MAXSYMS and linenumbers MAXLINES we'll put in it */
4628 static struct symtab *
4629 new_symtab (char *name, int maxsyms, int maxlines, struct objfile *objfile)
4631 struct symtab *s = allocate_symtab (name, objfile);
4633 LINETABLE (s) = new_linetable (maxlines);
4635 /* All symtabs must have at least two blocks */
4636 BLOCKVECTOR (s) = new_bvect (2);
4637 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);
4638 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);
4639 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =
4640 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
4642 s->free_code = free_linetable;
4643 s->debugformat = obsavestring ("ECOFF", 5,
4644 &objfile->symbol_obstack);
4648 /* Allocate a new partial_symtab NAME */
4650 static struct partial_symtab *
4651 new_psymtab (char *name, struct objfile *objfile)
4653 struct partial_symtab *psymtab;
4655 psymtab = allocate_psymtab (name, objfile);
4656 psymtab->section_offsets = objfile->section_offsets;
4658 /* Keep a backpointer to the file's symbols */
4660 psymtab->read_symtab_private = ((char *)
4661 obstack_alloc (&objfile->psymbol_obstack,
4662 sizeof (struct symloc)));
4663 memset (psymtab->read_symtab_private, 0, sizeof (struct symloc));
4664 CUR_BFD (psymtab) = cur_bfd;
4665 DEBUG_SWAP (psymtab) = debug_swap;
4666 DEBUG_INFO (psymtab) = debug_info;
4667 PENDING_LIST (psymtab) = pending_list;
4669 /* The way to turn this into a symtab is to call... */
4670 psymtab->read_symtab = mdebug_psymtab_to_symtab;
4675 /* Allocate a linetable array of the given SIZE. Since the struct
4676 already includes one item, we subtract one when calculating the
4677 proper size to allocate. */
4679 static struct linetable *
4680 new_linetable (int size)
4682 struct linetable *l;
4684 size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);
4685 l = (struct linetable *) xmalloc (size);
4690 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4691 I am not so sure about the 3.4 ones.
4693 Since the struct linetable already includes one item, we subtract one when
4694 calculating the proper size to allocate. */
4696 static struct linetable *
4697 shrink_linetable (struct linetable *lt)
4700 return (struct linetable *) xrealloc ((void *) lt,
4701 (sizeof (struct linetable)
4703 * sizeof (lt->item))));
4706 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4708 static struct blockvector *
4709 new_bvect (int nblocks)
4711 struct blockvector *bv;
4714 size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
4715 bv = (struct blockvector *) xzalloc (size);
4717 BLOCKVECTOR_NBLOCKS (bv) = nblocks;
4722 /* Allocate and zero a new block of MAXSYMS symbols */
4724 static struct block *
4725 new_block (int maxsyms)
4727 int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
4729 return (struct block *) xzalloc (size);
4732 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4733 Shrink_block can also be used by add_symbol to grow a block. */
4735 static struct block *
4736 shrink_block (struct block *b, struct symtab *s)
4739 struct blockvector *bv = BLOCKVECTOR (s);
4742 /* Just reallocate it and fix references to the old one */
4744 new = (struct block *) xrealloc ((void *) b,
4745 (sizeof (struct block)
4746 + ((BLOCK_NSYMS (b) - 1)
4747 * sizeof (struct symbol *))));
4749 /* FIXME: Not worth hashing this block as it's built. */
4750 /* All callers should have created the block with new_block (), which
4751 would mean it was not previously hashed. Make sure. */
4752 gdb_assert (BLOCK_HASHTABLE (new) == 0);
4754 /* Should chase pointers to old one. Fortunately, that`s just
4755 the block`s function and inferior blocks */
4756 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
4757 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4758 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
4759 if (BLOCKVECTOR_BLOCK (bv, i) == b)
4760 BLOCKVECTOR_BLOCK (bv, i) = new;
4761 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)
4762 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;
4766 /* Create a new symbol with printname NAME */
4768 static struct symbol *
4769 new_symbol (char *name)
4771 struct symbol *s = ((struct symbol *)
4772 obstack_alloc (¤t_objfile->symbol_obstack,
4773 sizeof (struct symbol)));
4775 memset (s, 0, sizeof (*s));
4776 SYMBOL_NAME (s) = obsavestring (name, strlen (name),
4777 ¤t_objfile->symbol_obstack);
4778 SYMBOL_LANGUAGE (s) = psymtab_language;
4779 SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack);
4783 /* Create a new type with printname NAME */
4785 static struct type *
4786 new_type (char *name)
4790 t = alloc_type (current_objfile);
4791 TYPE_NAME (t) = name;
4792 TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default;
4796 /* Read ECOFF debugging information from a BFD section. This is
4797 called from elfread.c. It parses the section into a
4798 ecoff_debug_info struct, and then lets the rest of the file handle
4802 elfmdebug_build_psymtabs (struct objfile *objfile,
4803 const struct ecoff_debug_swap *swap, asection *sec)
4805 bfd *abfd = objfile->obfd;
4806 struct ecoff_debug_info *info;
4808 info = ((struct ecoff_debug_info *)
4809 obstack_alloc (&objfile->psymbol_obstack,
4810 sizeof (struct ecoff_debug_info)));
4812 if (!(*swap->read_debug_info) (abfd, sec, info))
4813 error ("Error reading ECOFF debugging information: %s",
4814 bfd_errmsg (bfd_get_error ()));
4816 mdebug_build_psymtabs (objfile, swap, info);
4820 /* Things used for calling functions in the inferior.
4821 These functions are exported to our companion
4822 mips-tdep.c file and are here because they play
4823 with the symbol-table explicitly. */
4825 /* Sigtramp: make sure we have all the necessary information
4826 about the signal trampoline code. Since the official code
4827 from MIPS does not do so, we make up that information ourselves.
4828 If they fix the library (unlikely) this code will neutralize itself. */
4830 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4831 here because it calls functions defined in this file, but perhaps
4832 this could be handled in a better way. Only compile it in when
4833 tm-mips.h is included. */
4838 fixup_sigtramp (void)
4842 struct block *b, *b0 = NULL;
4844 sigtramp_address = -1;
4846 /* We have to handle the following cases here:
4847 a) The Mips library has a sigtramp label within sigvec.
4848 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4849 s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
4852 b0 = SYMBOL_BLOCK_VALUE (s);
4853 s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
4857 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4858 s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
4861 /* But maybe this program uses its own version of sigvec */
4865 /* Did we or MIPSco fix the library ? */
4866 if (SYMBOL_CLASS (s) == LOC_BLOCK)
4868 sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
4869 sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
4873 sigtramp_address = SYMBOL_VALUE (s);
4874 sigtramp_end = sigtramp_address + 0x88; /* black magic */
4876 /* But what symtab does it live in ? */
4877 st = find_pc_symtab (SYMBOL_VALUE (s));
4880 * Ok, there goes the fix: turn it into a procedure, with all the
4881 * needed info. Note we make it a nested procedure of sigvec,
4882 * which is the way the (assembly) code is actually written.
4884 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
4885 SYMBOL_CLASS (s) = LOC_BLOCK;
4886 SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
4888 TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void;
4890 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4892 SYMBOL_BLOCK_VALUE (s) = b;
4893 BLOCK_START (b) = sigtramp_address;
4894 BLOCK_END (b) = sigtramp_end;
4895 BLOCK_FUNCTION (b) = s;
4896 BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
4900 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4902 struct mips_extra_func_info *e =
4903 ((struct mips_extra_func_info *)
4904 xzalloc (sizeof (struct mips_extra_func_info)));
4906 e->numargs = 0; /* the kernel thinks otherwise */
4907 e->pdr.frameoffset = 32;
4908 e->pdr.framereg = SP_REGNUM;
4909 /* Note that setting pcreg is no longer strictly necessary as
4910 mips_frame_saved_pc is now aware of signal handler frames. */
4911 e->pdr.pcreg = PC_REGNUM;
4912 e->pdr.regmask = -2;
4913 /* Offset to saved r31, in the sigtramp case the saved registers
4914 are above the frame in the sigcontext.
4915 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4916 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4917 and 32 * 4 bytes for the floating point registers. */
4918 e->pdr.regoffset = 4 + 12 + 31 * 4;
4919 e->pdr.fregmask = -1;
4920 /* Offset to saved f30 (first saved *double* register). */
4921 e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4;
4922 e->pdr.isym = (long) s;
4923 e->pdr.adr = sigtramp_address;
4925 current_objfile = st->objfile; /* Keep new_symbol happy */
4926 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
4927 SYMBOL_VALUE (s) = (long) e;
4928 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
4929 SYMBOL_CLASS (s) = LOC_CONST;
4930 SYMBOL_TYPE (s) = mdebug_type_void;
4931 current_objfile = NULL;
4934 BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s;
4937 #endif /* TM_MIPS_H */
4940 _initialize_mdebugread (void)
4943 init_type (TYPE_CODE_VOID, 1,
4945 "void", (struct objfile *) NULL);
4947 init_type (TYPE_CODE_INT, 1,
4949 "char", (struct objfile *) NULL);
4950 mdebug_type_unsigned_char =
4951 init_type (TYPE_CODE_INT, 1,
4953 "unsigned char", (struct objfile *) NULL);
4955 init_type (TYPE_CODE_INT, 2,
4957 "short", (struct objfile *) NULL);
4958 mdebug_type_unsigned_short =
4959 init_type (TYPE_CODE_INT, 2,
4961 "unsigned short", (struct objfile *) NULL);
4962 mdebug_type_int_32 =
4963 init_type (TYPE_CODE_INT, 4,
4965 "int", (struct objfile *) NULL);
4966 mdebug_type_unsigned_int_32 =
4967 init_type (TYPE_CODE_INT, 4,
4969 "unsigned int", (struct objfile *) NULL);
4970 mdebug_type_int_64 =
4971 init_type (TYPE_CODE_INT, 8,
4973 "int", (struct objfile *) NULL);
4974 mdebug_type_unsigned_int_64 =
4975 init_type (TYPE_CODE_INT, 8,
4977 "unsigned int", (struct objfile *) NULL);
4978 mdebug_type_long_32 =
4979 init_type (TYPE_CODE_INT, 4,
4981 "long", (struct objfile *) NULL);
4982 mdebug_type_unsigned_long_32 =
4983 init_type (TYPE_CODE_INT, 4,
4985 "unsigned long", (struct objfile *) NULL);
4986 mdebug_type_long_64 =
4987 init_type (TYPE_CODE_INT, 8,
4989 "long", (struct objfile *) NULL);
4990 mdebug_type_unsigned_long_64 =
4991 init_type (TYPE_CODE_INT, 8,
4993 "unsigned long", (struct objfile *) NULL);
4994 mdebug_type_long_long_64 =
4995 init_type (TYPE_CODE_INT, 8,
4997 "long long", (struct objfile *) NULL);
4998 mdebug_type_unsigned_long_long_64 =
4999 init_type (TYPE_CODE_INT, 8,
5001 "unsigned long long", (struct objfile *) NULL);
5002 mdebug_type_adr_32 =
5003 init_type (TYPE_CODE_PTR, 4,
5005 "adr_32", (struct objfile *) NULL);
5006 TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void;
5007 mdebug_type_adr_64 =
5008 init_type (TYPE_CODE_PTR, 8,
5010 "adr_64", (struct objfile *) NULL);
5011 TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void;
5013 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
5015 "float", (struct objfile *) NULL);
5016 mdebug_type_double =
5017 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
5019 "double", (struct objfile *) NULL);
5020 mdebug_type_complex =
5021 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
5023 "complex", (struct objfile *) NULL);
5024 TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float;
5025 mdebug_type_double_complex =
5026 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
5028 "double complex", (struct objfile *) NULL);
5029 TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double;
5031 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
5033 mdebug_type_string =
5034 init_type (TYPE_CODE_STRING,
5035 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
5037 (struct objfile *) NULL);
5039 /* We use TYPE_CODE_INT to print these as integers. Does this do any
5040 good? Would we be better off with TYPE_CODE_ERROR? Should
5041 TYPE_CODE_ERROR print things in hex if it knows the size? */
5042 mdebug_type_fixed_dec =
5043 init_type (TYPE_CODE_INT,
5044 TARGET_INT_BIT / TARGET_CHAR_BIT,
5046 (struct objfile *) NULL);
5048 mdebug_type_float_dec =
5049 init_type (TYPE_CODE_ERROR,
5050 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
5051 0, "floating decimal",
5052 (struct objfile *) NULL);
5054 nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0,
5055 "<function, no debug info>", NULL);
5056 TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int;
5057 nodebug_var_symbol_type =
5058 init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0,
5059 "<variable, no debug info>", NULL);