1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998
3 Free Software Foundation, Inc.
4 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
5 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
25 /* This module provides the function mdebug_build_psymtabs. It reads
26 ECOFF debugging information into partial symbol tables. The
27 debugging information is read from two structures. A struct
28 ecoff_debug_swap includes the sizes of each ECOFF structure and
29 swapping routines; these are fixed for a particular target. A
30 struct ecoff_debug_info points to the debugging information for a
31 particular object file.
33 ECOFF symbol tables are mostly written in the byte order of the
34 target machine. However, one section of the table (the auxiliary
35 symbol information) is written in the host byte order. There is a
36 bit in the other symbol info which describes which host byte order
37 was used. ECOFF thereby takes the trophy from Intel `b.out' for
38 the most brain-dead adaptation of a file format to byte order.
40 This module can read all four of the known byte-order combinations,
41 on any type of host. */
51 #include "stabsread.h"
52 #include "complaints.h"
55 /* These are needed if the tm.h file does not contain the necessary
56 mips specific definitions. */
58 #ifndef MIPS_EFI_SYMBOL_NAME
59 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
60 extern void ecoff_relocate_efi PARAMS ((struct symbol *, CORE_ADDR));
62 #include "coff/symconst.h"
63 typedef struct mips_extra_func_info
68 *mips_extra_func_info_t;
75 #include <sys/types.h>
79 #include "gdb_string.h"
81 #include "gdb-stabs.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" /* Needed inside partial-stab.h */
94 extern void _initialize_mdebugread PARAMS ((void));
96 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
97 #ifndef ECOFF_REG_TO_REGNUM
98 #define ECOFF_REG_TO_REGNUM(num) (num)
101 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
102 We use this define in order to know whether we should override a
103 symbol's ECOFF section with its ELF section. This is necessary in
104 case the symbol's ELF section could not be represented in ECOFF. */
105 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
106 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
109 /* We put a pointer to this structure in the read_symtab_private field
114 /* Index of the FDR that this psymtab represents. */
116 /* The BFD that the psymtab was created from. */
118 const struct ecoff_debug_swap *debug_swap;
119 struct ecoff_debug_info *debug_info;
120 struct mdebug_pending **pending_list;
121 /* Pointer to external symbols for this file. */
123 /* Size of extern_tab. */
125 enum language pst_language;
128 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
129 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
130 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
131 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
132 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
133 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
135 #define SC_IS_TEXT(sc) ((sc) == scText \
136 || (sc) == scRConst \
139 #define SC_IS_DATA(sc) ((sc) == scData \
144 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
145 #define SC_IS_BSS(sc) ((sc) == scBss || (sc) == scSBss)
146 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
149 /* Things we import explicitly from other modules */
151 extern int info_verbose;
153 /* Various complaints about symbol reading that don't abort the process */
155 static struct complaint bad_file_number_complaint =
156 {"bad file number %d", 0, 0};
158 static struct complaint index_complaint =
159 {"bad aux index at symbol %s", 0, 0};
161 static struct complaint aux_index_complaint =
162 {"bad proc end in aux found from symbol %s", 0, 0};
164 static struct complaint block_index_complaint =
165 {"bad aux index at block symbol %s", 0, 0};
167 static struct complaint unknown_ext_complaint =
168 {"unknown external symbol %s", 0, 0};
170 static struct complaint unknown_sym_complaint =
171 {"unknown local symbol %s", 0, 0};
173 static struct complaint unknown_st_complaint =
174 {"with type %d", 0, 0};
176 static struct complaint block_overflow_complaint =
177 {"block containing %s overfilled", 0, 0};
179 static struct complaint basic_type_complaint =
180 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
182 static struct complaint unknown_type_qual_complaint =
183 {"unknown type qualifier 0x%x", 0, 0};
185 static struct complaint array_index_type_complaint =
186 {"illegal array index type for %s, assuming int", 0, 0};
188 static struct complaint bad_tag_guess_complaint =
189 {"guessed tag type of %s incorrectly", 0, 0};
191 static struct complaint block_member_complaint =
192 {"declaration block contains unhandled symbol type %d", 0, 0};
194 static struct complaint stEnd_complaint =
195 {"stEnd with storage class %d not handled", 0, 0};
197 static struct complaint unknown_mdebug_symtype_complaint =
198 {"unknown symbol type 0x%x", 0, 0};
200 static struct complaint stab_unknown_complaint =
201 {"unknown stabs symbol %s", 0, 0};
203 static struct complaint pdr_for_nonsymbol_complaint =
204 {"PDR for %s, but no symbol", 0, 0};
206 static struct complaint pdr_static_symbol_complaint =
207 {"can't handle PDR for static proc at 0x%lx", 0, 0};
209 static struct complaint bad_setjmp_pdr_complaint =
210 {"fixing bad setjmp PDR from libc", 0, 0};
212 static struct complaint bad_fbitfield_complaint =
213 {"can't handle TIR fBitfield for %s", 0, 0};
215 static struct complaint bad_continued_complaint =
216 {"illegal TIR continued for %s", 0, 0};
218 static struct complaint bad_rfd_entry_complaint =
219 {"bad rfd entry for %s: file %d, index %d", 0, 0};
221 static struct complaint unexpected_type_code_complaint =
222 {"unexpected type code for %s", 0, 0};
224 static struct complaint unable_to_cross_ref_complaint =
225 {"unable to cross ref btTypedef for %s", 0, 0};
227 static struct complaint bad_indirect_xref_complaint =
228 {"unable to cross ref btIndirect for %s", 0, 0};
230 static struct complaint illegal_forward_tq0_complaint =
231 {"illegal tq0 in forward typedef for %s", 0, 0};
233 static struct complaint illegal_forward_bt_complaint =
234 {"illegal bt %d in forward typedef for %s", 0, 0};
236 static struct complaint bad_linetable_guess_complaint =
237 {"guessed size of linetable for %s incorrectly", 0, 0};
239 static struct complaint bad_ext_ifd_complaint =
240 {"bad ifd for external symbol: %d (max %d)", 0, 0};
242 static struct complaint bad_ext_iss_complaint =
243 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
245 /* Macros and extra defs */
247 /* Puns: hard to find whether -g was used and how */
249 #define MIN_GLEVEL GLEVEL_0
250 #define compare_glevel(a,b) \
251 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
252 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
254 /* Things that really are local to this module */
256 /* Remember what we deduced to be the source language of this psymtab. */
258 static enum language psymtab_language = language_unknown;
264 /* How to parse debugging information for CUR_BFD. */
266 static const struct ecoff_debug_swap *debug_swap;
268 /* Pointers to debugging information for CUR_BFD. */
270 static struct ecoff_debug_info *debug_info;
272 /* Pointer to current file decriptor record, and its index */
277 /* Index of current symbol */
281 /* Note how much "debuggable" this image is. We would like
282 to see at least one FDR with full symbols */
284 static int max_gdbinfo;
285 static int max_glevel;
287 /* When examining .o files, report on undefined symbols */
289 static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
291 /* Pseudo symbol to use when putting stabs into the symbol table. */
293 static char stabs_symbol[] = STABS_SYMBOL;
295 /* Types corresponding to mdebug format bt* basic types. */
297 static struct type *mdebug_type_void;
298 static struct type *mdebug_type_char;
299 static struct type *mdebug_type_short;
300 static struct type *mdebug_type_int_32;
301 #define mdebug_type_int mdebug_type_int_32
302 static struct type *mdebug_type_int_64;
303 static struct type *mdebug_type_long_32;
304 static struct type *mdebug_type_long_64;
305 static struct type *mdebug_type_long_long_64;
306 static struct type *mdebug_type_unsigned_char;
307 static struct type *mdebug_type_unsigned_short;
308 static struct type *mdebug_type_unsigned_int_32;
309 static struct type *mdebug_type_unsigned_int_64;
310 static struct type *mdebug_type_unsigned_long_32;
311 static struct type *mdebug_type_unsigned_long_64;
312 static struct type *mdebug_type_unsigned_long_long_64;
313 static struct type *mdebug_type_adr_32;
314 static struct type *mdebug_type_adr_64;
315 static struct type *mdebug_type_float;
316 static struct type *mdebug_type_double;
317 static struct type *mdebug_type_complex;
318 static struct type *mdebug_type_double_complex;
319 static struct type *mdebug_type_fixed_dec;
320 static struct type *mdebug_type_float_dec;
321 static struct type *mdebug_type_string;
323 /* Types for symbols from files compiled without debugging info. */
325 static struct type *nodebug_func_symbol_type;
326 static struct type *nodebug_var_symbol_type;
328 /* Nonzero if we have seen ecoff debugging info for a file. */
330 static int found_ecoff_debugging_info;
332 /* Forward declarations */
335 add_pending PARAMS ((FDR *, char *, struct type *));
337 static struct mdebug_pending *
338 is_pending_symbol PARAMS ((FDR *, char *));
341 pop_parse_stack PARAMS ((void));
344 push_parse_stack PARAMS ((void));
347 fdr_name PARAMS ((FDR *));
350 mdebug_psymtab_to_symtab PARAMS ((struct partial_symtab *));
353 upgrade_type PARAMS ((int, struct type **, int, union aux_ext *, int, char *));
356 parse_partial_symbols PARAMS ((struct objfile *));
359 * get_rfd PARAMS ((int, int));
362 has_opaque_xref PARAMS ((FDR *, SYMR *));
365 cross_ref PARAMS ((int, union aux_ext *, struct type **, enum type_code,
366 char **, int, char *));
368 static struct symbol *
369 new_symbol PARAMS ((char *));
372 new_type PARAMS ((char *));
374 static struct block *
375 new_block PARAMS ((int));
377 static struct symtab *
378 new_symtab PARAMS ((char *, int, int, struct objfile *));
380 static struct linetable *
381 new_linetable PARAMS ((int));
383 static struct blockvector *
384 new_bvect PARAMS ((int));
387 parse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int, struct section_offsets *, struct objfile *));
390 parse_type PARAMS ((int, union aux_ext *, unsigned int, int *, int, char *));
392 static struct symbol *
393 mylookup_symbol PARAMS ((char *, struct block *, namespace_enum,
394 enum address_class));
396 static struct block *
397 shrink_block PARAMS ((struct block *, struct symtab *));
400 xzalloc PARAMS ((unsigned int));
403 sort_blocks PARAMS ((struct symtab *));
406 compare_blocks PARAMS ((const void *, const void *));
408 static struct partial_symtab *
409 new_psymtab PARAMS ((char *, struct objfile *));
412 psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *));
415 add_block PARAMS ((struct block *, struct symtab *));
418 add_symbol PARAMS ((struct symbol *, struct block *));
421 add_line PARAMS ((struct linetable *, int, CORE_ADDR, int));
423 static struct linetable *
424 shrink_linetable PARAMS ((struct linetable *));
427 handle_psymbol_enumerators PARAMS ((struct objfile *, FDR *, int, CORE_ADDR));
430 mdebug_next_symbol_text PARAMS ((struct objfile *));
432 /* Address bounds for the signal trampoline in inferior, if any */
434 CORE_ADDR sigtramp_address, sigtramp_end;
436 /* Allocate zeroed memory */
442 PTR p = xmalloc (size);
448 /* Exported procedure: Builds a symtab from the PST partial one.
449 Restores the environment in effect when PST was created, delegates
450 most of the work to an ancillary procedure, and sorts
451 and reorders the symtab list at the end */
454 mdebug_psymtab_to_symtab (pst)
455 struct partial_symtab *pst;
463 printf_filtered ("Reading in symbols for %s...", pst->filename);
464 gdb_flush (gdb_stdout);
467 next_symbol_text_func = mdebug_next_symbol_text;
469 psymtab_to_symtab_1 (pst, pst->filename);
471 /* Match with global symbols. This only needs to be done once,
472 after all of the symtabs and dependencies have been read in. */
473 scan_file_globals (pst->objfile);
476 printf_filtered ("done.\n");
479 /* File-level interface functions */
481 /* Find a file descriptor given its index RF relative to a file CF */
491 fdrs = debug_info->fdr;
493 /* Object files do not have the RFD table, all refs are absolute */
496 (*debug_swap->swap_rfd_in) (cur_bfd,
497 ((char *) debug_info->external_rfd
499 * debug_swap->external_rfd_size)),
504 /* Return a safer print NAME for a file descriptor */
511 return "<stripped file>";
514 return debug_info->ss + f->issBase + f->rss;
518 /* Read in and parse the symtab of the file OBJFILE. Symbols from
519 different sections are relocated via the SECTION_OFFSETS. */
522 mdebug_build_psymtabs (objfile, swap, info)
523 struct objfile *objfile;
524 const struct ecoff_debug_swap *swap;
525 struct ecoff_debug_info *info;
527 cur_bfd = objfile->obfd;
531 /* Make sure all the FDR information is swapped in. */
532 if (info->fdr == (FDR *) NULL)
538 info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack,
539 (info->symbolic_header.ifdMax
541 fdr_src = info->external_fdr;
543 + info->symbolic_header.ifdMax * swap->external_fdr_size);
545 for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)
546 (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr);
549 parse_partial_symbols (objfile);
552 /* Check to make sure file was compiled with -g. If not, warn the
553 user of this limitation. */
554 if (compare_glevel (max_glevel, GLEVEL_2) < 0)
556 if (max_gdbinfo == 0)
557 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
559 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
560 gdb_flush (gdb_stdout);
565 /* Local utilities */
567 /* Map of FDR indexes to partial symtabs */
571 struct partial_symtab *pst; /* the psymtab proper */
572 long n_globals; /* exported globals (external symbols) */
573 long globals_offset; /* cumulative */
577 /* Utility stack, used to nest procedures and blocks properly.
578 It is a doubly linked list, to avoid too many alloc/free.
579 Since we might need it quite a few times it is NOT deallocated
582 static struct parse_stack
584 struct parse_stack *next, *prev;
585 struct symtab *cur_st; /* Current symtab. */
586 struct block *cur_block; /* Block in it. */
588 /* What are we parsing. stFile, or stBlock are for files and
589 blocks. stProc or stStaticProc means we have seen the start of a
590 procedure, but not the start of the block within in. When we see
591 the start of that block, we change it to stNil, without pushing a
592 new block, i.e. stNil means both a procedure and a block. */
596 int maxsyms; /* Max symbols in this block. */
597 struct type *cur_type; /* Type we parse fields for. */
598 int cur_field; /* Field number in cur_type. */
599 CORE_ADDR procadr; /* Start addres of this procedure */
600 int numargs; /* Its argument count */
603 *top_stack; /* Top stack ptr */
606 /* Enter a new lexical context */
611 struct parse_stack *new;
613 /* Reuse frames if possible */
614 if (top_stack && top_stack->prev)
615 new = top_stack->prev;
617 new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));
618 /* Initialize new frame with previous content */
621 register struct parse_stack *prev = new->prev;
624 top_stack->prev = new;
626 new->next = top_stack;
631 /* Exit a lexical context */
639 top_stack = top_stack->next;
643 /* Cross-references might be to things we haven't looked at
644 yet, e.g. type references. To avoid too many type
645 duplications we keep a quick fixup table, an array
646 of lists of references indexed by file descriptor */
648 struct mdebug_pending
650 struct mdebug_pending *next; /* link */
651 char *s; /* the unswapped symbol */
652 struct type *t; /* its partial type descriptor */
656 /* The pending information is kept for an entire object file, and used
657 to be in the sym_private field. I took it out when I split
658 mdebugread from mipsread, because this might not be the only type
659 of symbols read from an object file. Instead, we allocate the
660 pending information table when we create the partial symbols, and
661 we store a pointer to the single table in each psymtab. */
663 static struct mdebug_pending **pending_list;
665 /* Check whether we already saw symbol SH in file FH */
667 static struct mdebug_pending *
668 is_pending_symbol (fh, sh)
672 int f_idx = fh - debug_info->fdr;
673 register struct mdebug_pending *p;
675 /* Linear search is ok, list is typically no more than 10 deep */
676 for (p = pending_list[f_idx]; p; p = p->next)
682 /* Add a new symbol SH of type T */
685 add_pending (fh, sh, t)
690 int f_idx = fh - debug_info->fdr;
691 struct mdebug_pending *p = is_pending_symbol (fh, sh);
693 /* Make sure we do not make duplicates */
696 p = ((struct mdebug_pending *)
697 obstack_alloc (¤t_objfile->psymbol_obstack,
698 sizeof (struct mdebug_pending)));
701 p->next = pending_list[f_idx];
702 pending_list[f_idx] = p;
707 /* Parsing Routines proper. */
709 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
710 For blocks, procedures and types we open a new lexical context.
711 This is basically just a big switch on the symbol's type. Argument
712 AX is the base pointer of aux symbols for this file (fh->iauxBase).
713 EXT_SH points to the unswapped symbol, which is needed for struct,
714 union, etc., types; it is NULL for an EXTR. BIGEND says whether
715 aux symbols are big-endian or little-endian. Return count of
716 SYMR's handled (normally one). */
719 parse_symbol (sh, ax, ext_sh, bigend, section_offsets, objfile)
724 struct section_offsets *section_offsets;
725 struct objfile *objfile;
727 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
728 void (*const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) =
729 debug_swap->swap_sym_in;
733 struct mdebug_pending *pend;
737 enum address_class class;
739 long svalue = sh->value;
742 if (ext_sh == (char *) NULL)
743 name = debug_info->ssext + sh->iss;
745 name = debug_info->ss + cur_fdr->issBase + sh->iss;
751 /* Do not relocate relative values.
752 The value of a stEnd symbol is the displacement from the
753 corresponding start symbol value.
754 The value of a stBlock symbol is the displacement from the
755 procedure address. */
756 if (sh->st != stEnd && sh->st != stBlock)
757 sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
764 sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile));
768 sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile));
777 case stGlobal: /* external symbol, goes into global block */
779 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
781 s = new_symbol (name);
782 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
785 case stStatic: /* static data, goes into current block. */
787 b = top_stack->cur_block;
788 s = new_symbol (name);
789 if (SC_IS_COMMON (sh->sc))
791 /* It is a FORTRAN common block. At least for SGI Fortran the
792 address is not in the symbol; we need to fix it later in
793 scan_file_globals. */
794 int bucket = hashname (SYMBOL_NAME (s));
795 SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
796 global_sym_chain[bucket] = s;
799 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
802 case stLocal: /* local variable, goes into current block */
803 if (sh->sc == scRegister)
805 class = LOC_REGISTER;
806 svalue = ECOFF_REG_TO_REGNUM (svalue);
810 b = top_stack->cur_block;
811 s = new_symbol (name);
812 SYMBOL_VALUE (s) = svalue;
814 data: /* Common code for symbols describing data */
815 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
816 SYMBOL_CLASS (s) = class;
819 /* Type could be missing if file is compiled without debugging info. */
820 if (SC_IS_UNDEF (sh->sc)
821 || sh->sc == scNil || sh->index == indexNil)
822 SYMBOL_TYPE (s) = nodebug_var_symbol_type;
824 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
825 /* Value of a data symbol is its memory address */
828 case stParam: /* arg to procedure, goes into current block */
830 found_ecoff_debugging_info = 1;
831 top_stack->numargs++;
833 /* Special GNU C++ name. */
834 if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0)
835 name = "this"; /* FIXME, not alloc'd in obstack */
836 s = new_symbol (name);
838 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
842 /* Pass by value in register. */
843 SYMBOL_CLASS (s) = LOC_REGPARM;
844 svalue = ECOFF_REG_TO_REGNUM (svalue);
847 /* Pass by reference on stack. */
848 SYMBOL_CLASS (s) = LOC_REF_ARG;
851 /* Pass by reference in register. */
852 SYMBOL_CLASS (s) = LOC_REGPARM_ADDR;
853 svalue = ECOFF_REG_TO_REGNUM (svalue);
856 /* Pass by value on stack. */
857 SYMBOL_CLASS (s) = LOC_ARG;
860 SYMBOL_VALUE (s) = svalue;
861 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
862 add_symbol (s, top_stack->cur_block);
865 case stLabel: /* label, goes into current block */
866 s = new_symbol (name);
867 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */
868 SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */
869 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
870 SYMBOL_TYPE (s) = mdebug_type_int;
871 add_symbol (s, top_stack->cur_block);
874 case stProc: /* Procedure, usually goes into global block */
875 case stStaticProc: /* Static procedure, goes into current block */
876 s = new_symbol (name);
877 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
878 SYMBOL_CLASS (s) = LOC_BLOCK;
879 /* Type of the return value */
880 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
884 t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
885 if (STREQ (name, "malloc") && t->code == TYPE_CODE_VOID)
887 /* I don't know why, but, at least under Alpha GNU/Linux,
888 when linking against a malloc without debugging
889 symbols, its read as a function returning void---this
890 is bad because it means we cannot call functions with
891 string arguments interactively; i.e., "call
892 printf("howdy\n")" would fail with the error message
893 "program has no memory available". To avoid this, we
894 patch up the type and make it void*
895 instead. (davidm@azstarnet.com)
897 t = make_pointer_type (t, NULL);
900 b = top_stack->cur_block;
901 if (sh->st == stProc)
903 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
904 /* The next test should normally be true, but provides a
905 hook for nested functions (which we don't want to make
907 if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
908 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
909 /* Irix 5 sometimes has duplicate names for the same
910 function. We want to add such names up at the global
911 level, not as a nested function. */
912 else if (sh->value == top_stack->procadr)
913 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
917 /* Make a type for the procedure itself */
918 SYMBOL_TYPE (s) = lookup_function_type (t);
920 /* Create and enter a new lexical context */
921 b = new_block (top_stack->maxsyms);
922 SYMBOL_BLOCK_VALUE (s) = b;
923 BLOCK_FUNCTION (b) = s;
924 BLOCK_START (b) = BLOCK_END (b) = sh->value;
925 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
926 add_block (b, top_stack->cur_st);
928 /* Not if we only have partial info */
929 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
933 top_stack->cur_block = b;
934 top_stack->blocktype = sh->st;
935 top_stack->cur_type = SYMBOL_TYPE (s);
936 top_stack->cur_field = -1;
937 top_stack->procadr = sh->value;
938 top_stack->numargs = 0;
941 /* Beginning of code for structure, union, and enum definitions.
942 They all share a common set of local variables, defined here. */
944 enum type_code type_code;
950 case stStruct: /* Start a block defining a struct type */
951 type_code = TYPE_CODE_STRUCT;
952 goto structured_common;
954 case stUnion: /* Start a block defining a union type */
955 type_code = TYPE_CODE_UNION;
956 goto structured_common;
958 case stEnum: /* Start a block defining an enum type */
959 type_code = TYPE_CODE_ENUM;
960 goto structured_common;
962 case stBlock: /* Either a lexical block, or some type */
963 if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc))
964 goto case_stBlock_code; /* Lexical block */
966 type_code = TYPE_CODE_UNDEF; /* We have a type. */
968 /* Common code for handling struct, union, enum, and/or as-yet-
969 unknown-type blocks of info about structured data. `type_code'
970 has been set to the proper TYPE_CODE, if we know it. */
972 found_ecoff_debugging_info = 1;
974 top_stack->blocktype = stBlock;
976 /* First count the number of fields and the highest value. */
979 for (ext_tsym = ext_sh + external_sym_size;
981 ext_tsym += external_sym_size)
985 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
993 if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
995 /* If the type of the member is Nil (or Void),
996 without qualifiers, assume the tag is an
998 Alpha cc -migrate enums are recognized by a zero
999 index and a zero symbol value.
1000 DU 4.0 cc enums are recognized by a member type of
1001 btEnum without qualifiers and a zero symbol value. */
1002 if (tsym.index == indexNil
1003 || (tsym.index == 0 && sh->value == 0))
1004 type_code = TYPE_CODE_ENUM;
1007 (*debug_swap->swap_tir_in) (bigend,
1008 &ax[tsym.index].a_ti,
1010 if ((tir.bt == btNil || tir.bt == btVoid
1011 || (tir.bt == btEnum && sh->value == 0))
1012 && tir.tq0 == tqNil)
1013 type_code = TYPE_CODE_ENUM;
1017 if (tsym.value > max_value)
1018 max_value = tsym.value;
1027 /* This is a no-op; is it trying to tell us something
1028 we should be checking? */
1029 if (tsym.sc == scVariant); /*UNIMPLEMENTED */
1031 if (tsym.index != 0)
1033 /* This is something like a struct within a
1034 struct. Skip over the fields of the inner
1035 struct. The -1 is because the for loop will
1036 increment ext_tsym. */
1037 ext_tsym = ((char *) debug_info->external_sym
1038 + ((cur_fdr->isymBase + tsym.index - 1)
1039 * external_sym_size));
1045 /* mips cc puts out a typedef for struct x if it is not yet
1046 defined when it encounters
1047 struct y { struct x *xp; };
1052 /* Irix5 cc puts out a stIndirect for struct x if it is not
1053 yet defined when it encounters
1054 struct y { struct x *xp; };
1059 complain (&block_member_complaint, tsym.st);
1064 /* In an stBlock, there is no way to distinguish structs,
1065 unions, and enums at this point. This is a bug in the
1066 original design (that has been fixed with the recent
1067 addition of the stStruct, stUnion, and stEnum symbol
1068 types.) The way you can tell is if/when you see a variable
1069 or field of that type. In that case the variable's type
1070 (in the AUX table) says if the type is struct, union, or
1071 enum, and points back to the stBlock here. So you can
1072 patch the tag kind up later - but only if there actually is
1073 a variable or field of that type.
1075 So until we know for sure, we will guess at this point.
1077 If the first member has index==indexNil or a void type,
1078 assume we have an enumeration.
1079 Otherwise, if there is more than one member, and all
1080 the members have offset 0, assume we have a union.
1081 Otherwise, assume we have a struct.
1083 The heuristic could guess wrong in the case of of an
1084 enumeration with no members or a union with one (or zero)
1085 members, or when all except the last field of a struct have
1086 width zero. These are uncommon and/or illegal situations,
1087 and in any case guessing wrong probably doesn't matter
1090 But if we later do find out we were wrong, we fixup the tag
1091 kind. Members of an enumeration must be handled
1092 differently from struct/union fields, and that is harder to
1093 patch up, but luckily we shouldn't need to. (If there are
1094 any enumeration members, we can tell for sure it's an enum
1097 if (type_code == TYPE_CODE_UNDEF)
1099 if (nfields > 1 && max_value == 0)
1100 type_code = TYPE_CODE_UNION;
1102 type_code = TYPE_CODE_STRUCT;
1105 /* Create a new type or use the pending type. */
1106 pend = is_pending_symbol (cur_fdr, ext_sh);
1107 if (pend == (struct mdebug_pending *) NULL)
1109 t = new_type (NULL);
1110 add_pending (cur_fdr, ext_sh, t);
1115 /* Do not set the tag name if it is a compiler generated tag name
1116 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1117 Alpha cc puts out an sh->iss of zero for those. */
1118 if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
1119 TYPE_TAG_NAME (t) = NULL;
1121 TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack,
1124 TYPE_CODE (t) = type_code;
1125 TYPE_LENGTH (t) = sh->value;
1126 TYPE_NFIELDS (t) = nfields;
1127 TYPE_FIELDS (t) = f = ((struct field *)
1129 nfields * sizeof (struct field)));
1131 if (type_code == TYPE_CODE_ENUM)
1133 int unsigned_enum = 1;
1135 /* This is a non-empty enum. */
1137 /* DEC c89 has the number of enumerators in the sh.value field,
1138 not the type length, so we have to compensate for that
1139 incompatibility quirk.
1140 This might do the wrong thing for an enum with one or two
1141 enumerators and gcc -gcoff -fshort-enums, but these cases
1142 are hopefully rare enough.
1143 Alpha cc -migrate has a sh.value field of zero, we adjust
1145 if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)
1146 || TYPE_LENGTH (t) == 0)
1147 TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT;
1148 for (ext_tsym = ext_sh + external_sym_size;
1150 ext_tsym += external_sym_size)
1153 struct symbol *enum_sym;
1155 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
1157 if (tsym.st != stMember)
1160 FIELD_BITPOS (*f) = tsym.value;
1161 FIELD_TYPE (*f) = t;
1162 FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss;
1163 FIELD_BITSIZE (*f) = 0;
1165 enum_sym = ((struct symbol *)
1166 obstack_alloc (¤t_objfile->symbol_obstack,
1167 sizeof (struct symbol)));
1168 memset ((PTR) enum_sym, 0, sizeof (struct symbol));
1169 SYMBOL_NAME (enum_sym) =
1170 obsavestring (f->name, strlen (f->name),
1171 ¤t_objfile->symbol_obstack);
1172 SYMBOL_CLASS (enum_sym) = LOC_CONST;
1173 SYMBOL_TYPE (enum_sym) = t;
1174 SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
1175 SYMBOL_VALUE (enum_sym) = tsym.value;
1176 if (SYMBOL_VALUE (enum_sym) < 0)
1178 add_symbol (enum_sym, top_stack->cur_block);
1180 /* Skip the stMembers that we've handled. */
1185 TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED;
1187 /* make this the current type */
1188 top_stack->cur_type = t;
1189 top_stack->cur_field = 0;
1191 /* Do not create a symbol for alpha cc unnamed structs. */
1195 /* gcc puts out an empty struct for an opaque struct definitions,
1196 do not create a symbol for it either. */
1197 if (TYPE_NFIELDS (t) == 0)
1199 TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
1203 s = new_symbol (name);
1204 SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
1205 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1206 SYMBOL_VALUE (s) = 0;
1207 SYMBOL_TYPE (s) = t;
1208 add_symbol (s, top_stack->cur_block);
1211 /* End of local variables shared by struct, union, enum, and
1212 block (as yet unknown struct/union/enum) processing. */
1216 found_ecoff_debugging_info = 1;
1217 /* beginnning of (code) block. Value of symbol
1218 is the displacement from procedure start */
1219 push_parse_stack ();
1221 /* Do not start a new block if this is the outermost block of a
1222 procedure. This allows the LOC_BLOCK symbol to point to the
1223 block with the local variables, so funcname::var works. */
1224 if (top_stack->blocktype == stProc
1225 || top_stack->blocktype == stStaticProc)
1227 top_stack->blocktype = stNil;
1231 top_stack->blocktype = stBlock;
1232 b = new_block (top_stack->maxsyms);
1233 BLOCK_START (b) = sh->value + top_stack->procadr;
1234 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1235 top_stack->cur_block = b;
1236 add_block (b, top_stack->cur_st);
1239 case stEnd: /* end (of anything) */
1240 if (sh->sc == scInfo || SC_IS_COMMON (sh->sc))
1242 /* Finished with type */
1243 top_stack->cur_type = 0;
1245 else if (sh->sc == scText &&
1246 (top_stack->blocktype == stProc ||
1247 top_stack->blocktype == stStaticProc))
1249 /* Finished with procedure */
1250 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
1251 struct mips_extra_func_info *e;
1253 struct type *ftype = top_stack->cur_type;
1256 BLOCK_END (top_stack->cur_block) += sh->value; /* size */
1258 /* Make up special symbol to contain procedure specific info */
1259 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
1260 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
1261 SYMBOL_CLASS (s) = LOC_CONST;
1262 SYMBOL_TYPE (s) = mdebug_type_void;
1263 e = ((struct mips_extra_func_info *)
1264 obstack_alloc (¤t_objfile->symbol_obstack,
1265 sizeof (struct mips_extra_func_info)));
1266 memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));
1267 SYMBOL_VALUE (s) = (long) e;
1268 e->numargs = top_stack->numargs;
1269 e->pdr.framereg = -1;
1270 add_symbol (s, top_stack->cur_block);
1272 /* Reallocate symbols, saving memory */
1273 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
1275 /* f77 emits proc-level with address bounds==[0,0],
1276 So look for such child blocks, and patch them. */
1277 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
1279 struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
1280 if (BLOCK_SUPERBLOCK (b_bad) == b
1281 && BLOCK_START (b_bad) == top_stack->procadr
1282 && BLOCK_END (b_bad) == top_stack->procadr)
1284 BLOCK_START (b_bad) = BLOCK_START (b);
1285 BLOCK_END (b_bad) = BLOCK_END (b);
1289 if (TYPE_NFIELDS (ftype) <= 0)
1291 /* No parameter type information is recorded with the function's
1292 type. Set that from the type of the parameter symbols. */
1293 int nparams = top_stack->numargs;
1299 TYPE_NFIELDS (ftype) = nparams;
1300 TYPE_FIELDS (ftype) = (struct field *)
1301 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
1303 for (i = iparams = 0; iparams < nparams; i++)
1305 sym = BLOCK_SYM (b, i);
1306 switch (SYMBOL_CLASS (sym))
1311 case LOC_REGPARM_ADDR:
1312 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
1322 else if (sh->sc == scText && top_stack->blocktype == stBlock)
1324 /* End of (code) block. The value of the symbol is the
1325 displacement from the procedure`s start address of the
1326 end of this block. */
1327 BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
1328 shrink_block (top_stack->cur_block, top_stack->cur_st);
1330 else if (sh->sc == scText && top_stack->blocktype == stNil)
1332 /* End of outermost block. Pop parse stack and ignore. The
1333 following stEnd of stProc will take care of the block. */
1336 else if (sh->sc == scText && top_stack->blocktype == stFile)
1338 /* End of file. Pop parse stack and ignore. Higher
1339 level code deals with this. */
1343 complain (&stEnd_complaint, sh->sc);
1345 pop_parse_stack (); /* restore previous lexical context */
1348 case stMember: /* member of struct or union */
1349 f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
1350 FIELD_NAME (*f) = name;
1351 FIELD_BITPOS (*f) = sh->value;
1353 FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name);
1354 FIELD_BITSIZE (*f) = bitsize;
1357 case stIndirect: /* forward declaration on Irix5 */
1358 /* Forward declarations from Irix5 cc are handled by cross_ref,
1362 case stTypedef: /* type definition */
1363 found_ecoff_debugging_info = 1;
1365 /* Typedefs for forward declarations and opaque structs from alpha cc
1366 are handled by cross_ref, skip them. */
1370 /* Parse the type or use the pending type. */
1371 pend = is_pending_symbol (cur_fdr, ext_sh);
1372 if (pend == (struct mdebug_pending *) NULL)
1374 t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name);
1375 add_pending (cur_fdr, ext_sh, t);
1380 /* mips cc puts out a typedef with the name of the struct for forward
1381 declarations. These should not go into the symbol table and
1382 TYPE_NAME should not be set for them.
1383 They can't be distinguished from an intentional typedef to
1384 the same name however:
1386 struct x { int ix; int jx; };
1390 struct xx {int ixx; int jxx; };
1391 generates a cross referencing stTypedef for x and xx.
1392 The user visible effect of this is that the type of a pointer
1393 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1394 The problem is fixed with alpha cc and Irix5 cc. */
1396 /* However if the typedef cross references to an opaque aggregate, it
1397 is safe to omit it from the symbol table. */
1399 if (has_opaque_xref (cur_fdr, sh))
1401 s = new_symbol (name);
1402 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1403 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1404 SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
1405 SYMBOL_TYPE (s) = t;
1406 add_symbol (s, top_stack->cur_block);
1408 /* Incomplete definitions of structs should not get a name. */
1409 if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
1410 && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
1411 || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
1412 && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
1414 if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
1415 || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
1417 /* If we are giving a name to a type such as "pointer to
1418 foo" or "function returning foo", we better not set
1419 the TYPE_NAME. If the program contains "typedef char
1420 *caddr_t;", we don't want all variables of type char
1421 * to print as caddr_t. This is not just a
1422 consequence of GDB's type management; CC and GCC (at
1423 least through version 2.4) both output variables of
1424 either type char * or caddr_t with the type
1425 refering to the stTypedef symbol for caddr_t. If a future
1426 compiler cleans this up it GDB is not ready for it
1427 yet, but if it becomes ready we somehow need to
1428 disable this check (without breaking the PCC/GCC2.4
1433 Fortunately, this check seems not to be necessary
1434 for anything except pointers or functions. */
1437 TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s);
1441 case stFile: /* file name */
1442 push_parse_stack ();
1443 top_stack->blocktype = sh->st;
1446 /* I`ve never seen these for C */
1448 break; /* register relocation */
1450 break; /* forwarding address */
1452 break; /* constant */
1454 complain (&unknown_mdebug_symtype_complaint, sh->st);
1461 /* Parse the type information provided in the raw AX entries for
1462 the symbol SH. Return the bitfield size in BS, in case.
1463 We must byte-swap the AX entries before we use them; BIGEND says whether
1464 they are big-endian or little-endian (from fh->fBigendian). */
1466 static struct type *
1467 parse_type (fd, ax, aux_index, bs, bigend, sym_name)
1470 unsigned int aux_index;
1475 /* Null entries in this map are treated specially */
1476 static struct type **map_bt[] =
1478 &mdebug_type_void, /* btNil */
1479 &mdebug_type_adr_32, /* btAdr */
1480 &mdebug_type_char, /* btChar */
1481 &mdebug_type_unsigned_char, /* btUChar */
1482 &mdebug_type_short, /* btShort */
1483 &mdebug_type_unsigned_short, /* btUShort */
1484 &mdebug_type_int_32, /* btInt */
1485 &mdebug_type_unsigned_int_32, /* btUInt */
1486 &mdebug_type_long_32, /* btLong */
1487 &mdebug_type_unsigned_long_32, /* btULong */
1488 &mdebug_type_float, /* btFloat */
1489 &mdebug_type_double, /* btDouble */
1496 &mdebug_type_complex, /* btComplex */
1497 &mdebug_type_double_complex, /* btDComplex */
1499 &mdebug_type_fixed_dec, /* btFixedDec */
1500 &mdebug_type_float_dec, /* btFloatDec */
1501 &mdebug_type_string, /* btString */
1504 &mdebug_type_void, /* btVoid */
1505 0, /* DEC C++: Pointer to member */
1506 0, /* DEC C++: Virtual function table */
1507 0, /* DEC C++: Class (Record) */
1508 &mdebug_type_long_64, /* btLong64 */
1509 &mdebug_type_unsigned_long_64, /* btULong64 */
1510 &mdebug_type_long_long_64, /* btLongLong64 */
1511 &mdebug_type_unsigned_long_long_64, /* btULongLong64 */
1512 &mdebug_type_adr_64, /* btAdr64 */
1513 &mdebug_type_int_64, /* btInt64 */
1514 &mdebug_type_unsigned_int_64, /* btUInt64 */
1518 struct type *tp = 0;
1519 enum type_code type_code = TYPE_CODE_UNDEF;
1521 /* Handle undefined types, they have indexNil. */
1522 if (aux_index == indexNil)
1523 return mdebug_type_int;
1525 /* Handle corrupt aux indices. */
1526 if (aux_index >= (debug_info->fdr + fd)->caux)
1528 complain (&index_complaint, sym_name);
1529 return mdebug_type_int;
1533 /* Use aux as a type information record, map its basic type. */
1534 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1535 if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt)))
1537 complain (&basic_type_complaint, t->bt, sym_name);
1538 return mdebug_type_int;
1542 tp = *map_bt[t->bt];
1547 /* Cannot use builtin types -- build our own */
1551 type_code = TYPE_CODE_STRUCT;
1554 type_code = TYPE_CODE_UNION;
1557 type_code = TYPE_CODE_ENUM;
1560 type_code = TYPE_CODE_RANGE;
1563 type_code = TYPE_CODE_SET;
1566 /* alpha cc -migrate uses this for typedefs. The true type will
1567 be obtained by crossreferencing below. */
1568 type_code = TYPE_CODE_ERROR;
1571 /* alpha cc uses this for typedefs. The true type will be
1572 obtained by crossreferencing below. */
1573 type_code = TYPE_CODE_ERROR;
1576 complain (&basic_type_complaint, t->bt, sym_name);
1577 return mdebug_type_int;
1581 /* Move on to next aux */
1586 int width = AUX_GET_WIDTH (bigend, ax);
1588 /* Inhibit core dumps with some cfront generated objects that
1590 if (bs == (int *) NULL)
1592 /* Alpha cc -migrate encodes char and unsigned char types
1593 as short and unsigned short types with a field width of 8.
1594 Enum types also have a field width which we ignore for now. */
1595 if (t->bt == btShort && width == 8)
1596 tp = mdebug_type_char;
1597 else if (t->bt == btUShort && width == 8)
1598 tp = mdebug_type_unsigned_char;
1599 else if (t->bt == btEnum)
1602 complain (&bad_fbitfield_complaint, sym_name);
1609 /* A btIndirect entry cross references to an aux entry containing
1611 if (t->bt == btIndirect)
1618 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
1620 if (rn->rfd == 0xfff)
1622 rf = AUX_GET_ISYM (bigend, ax);
1630 complain (&bad_indirect_xref_complaint, sym_name);
1631 return mdebug_type_int;
1633 xref_fh = get_rfd (fd, rf);
1634 xref_fd = xref_fh - debug_info->fdr;
1635 tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
1636 rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
1639 /* All these types really point to some (common) MIPS type
1640 definition, and only the type-qualifiers fully identify
1641 them. We'll make the same effort at sharing. */
1642 if (t->bt == btStruct ||
1646 /* btSet (I think) implies that the name is a tag name, not a typedef
1647 name. This apparently is a MIPS extension for C sets. */
1652 /* Try to cross reference this type, build new type on failure. */
1653 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1654 if (tp == (struct type *) NULL)
1655 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1657 /* DEC c89 produces cross references to qualified aggregate types,
1658 dereference them. */
1659 while (TYPE_CODE (tp) == TYPE_CODE_PTR
1660 || TYPE_CODE (tp) == TYPE_CODE_ARRAY)
1661 tp = tp->target_type;
1663 /* Make sure that TYPE_CODE(tp) has an expected type code.
1664 Any type may be returned from cross_ref if file indirect entries
1666 if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
1667 && TYPE_CODE (tp) != TYPE_CODE_UNION
1668 && TYPE_CODE (tp) != TYPE_CODE_ENUM)
1670 complain (&unexpected_type_code_complaint, sym_name);
1675 /* Usually, TYPE_CODE(tp) is already type_code. The main
1676 exception is if we guessed wrong re struct/union/enum.
1677 But for struct vs. union a wrong guess is harmless, so
1678 don't complain(). */
1679 if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
1680 && type_code != TYPE_CODE_ENUM)
1681 || (TYPE_CODE (tp) != TYPE_CODE_ENUM
1682 && type_code == TYPE_CODE_ENUM))
1684 complain (&bad_tag_guess_complaint, sym_name);
1687 if (TYPE_CODE (tp) != type_code)
1689 TYPE_CODE (tp) = type_code;
1692 /* Do not set the tag name if it is a compiler generated tag name
1693 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1694 if (name[0] == '.' || name[0] == '\0')
1695 TYPE_TAG_NAME (tp) = NULL;
1696 else if (TYPE_TAG_NAME (tp) == NULL
1697 || !STREQ (TYPE_TAG_NAME (tp), name))
1698 TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),
1699 ¤t_objfile->type_obstack);
1703 /* All these types really point to some (common) MIPS type
1704 definition, and only the type-qualifiers fully identify
1705 them. We'll make the same effort at sharing.
1706 FIXME: We are not doing any guessing on range types. */
1707 if (t->bt == btRange)
1711 /* Try to cross reference this type, build new type on failure. */
1712 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1713 if (tp == (struct type *) NULL)
1714 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1716 /* Make sure that TYPE_CODE(tp) has an expected type code.
1717 Any type may be returned from cross_ref if file indirect entries
1719 if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
1721 complain (&unexpected_type_code_complaint, sym_name);
1725 /* Usually, TYPE_CODE(tp) is already type_code. The main
1726 exception is if we guessed wrong re struct/union/enum. */
1727 if (TYPE_CODE (tp) != type_code)
1729 complain (&bad_tag_guess_complaint, sym_name);
1730 TYPE_CODE (tp) = type_code;
1732 if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))
1733 TYPE_NAME (tp) = obsavestring (name, strlen (name),
1734 ¤t_objfile->type_obstack);
1737 if (t->bt == btTypedef)
1741 /* Try to cross reference this type, it should succeed. */
1742 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1743 if (tp == (struct type *) NULL)
1745 complain (&unable_to_cross_ref_complaint, sym_name);
1746 tp = mdebug_type_int;
1750 /* Deal with range types */
1751 if (t->bt == btRange)
1753 TYPE_NFIELDS (tp) = 2;
1754 TYPE_FIELDS (tp) = ((struct field *)
1755 TYPE_ALLOC (tp, 2 * sizeof (struct field)));
1756 TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),
1757 ¤t_objfile->type_obstack);
1758 TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);
1760 TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),
1761 ¤t_objfile->type_obstack);
1762 TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);
1766 /* Parse all the type qualifiers now. If there are more
1767 than 6 the game will continue in the next aux */
1771 #define PARSE_TQ(tq) \
1772 if (t->tq != tqNil) \
1773 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1785 /* mips cc 2.x and gcc never put out continued aux entries. */
1789 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1793 /* Complain for illegal continuations due to corrupt aux entries. */
1795 complain (&bad_continued_complaint, sym_name);
1800 /* Make up a complex type from a basic one. Type is passed by
1801 reference in TPP and side-effected as necessary. The type
1802 qualifier TQ says how to handle the aux symbols at AX for
1803 the symbol SX we are currently analyzing. BIGEND says whether
1804 aux symbols are big-endian or little-endian.
1805 Returns the number of aux symbols we parsed. */
1808 upgrade_type (fd, tpp, tq, ax, bigend, sym_name)
1819 /* Used in array processing */
1830 t = lookup_pointer_type (*tpp);
1835 t = lookup_function_type (*tpp);
1842 /* Determine and record the domain type (type of index) */
1843 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
1849 rf = AUX_GET_ISYM (bigend, ax);
1852 fh = get_rfd (fd, rf);
1854 indx = parse_type (fh - debug_info->fdr,
1855 debug_info->external_aux + fh->iauxBase,
1856 id, (int *) NULL, bigend, sym_name);
1858 /* The bounds type should be an integer type, but might be anything
1859 else due to corrupt aux entries. */
1860 if (TYPE_CODE (indx) != TYPE_CODE_INT)
1862 complain (&array_index_type_complaint, sym_name);
1863 indx = mdebug_type_int;
1866 /* Get the bounds, and create the array type. */
1868 lower = AUX_GET_DNLOW (bigend, ax);
1870 upper = AUX_GET_DNHIGH (bigend, ax);
1872 rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
1874 range = create_range_type ((struct type *) NULL, indx,
1877 t = create_array_type ((struct type *) NULL, *tpp, range);
1879 /* We used to fill in the supplied array element bitsize
1880 here if the TYPE_LENGTH of the target type was zero.
1881 This happens for a `pointer to an array of anonymous structs',
1882 but in this case the array element bitsize is also zero,
1883 so nothing is gained.
1884 And we used to check the TYPE_LENGTH of the target type against
1885 the supplied array element bitsize.
1886 gcc causes a mismatch for `pointer to array of object',
1887 since the sdb directives it uses do not have a way of
1888 specifying the bitsize, but it does no harm (the
1889 TYPE_LENGTH should be correct) and we should be able to
1890 ignore the erroneous bitsize from the auxiliary entry safely.
1891 dbx seems to ignore it too. */
1893 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1895 if (TYPE_LENGTH (*tpp) == 0)
1897 TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB;
1904 /* Volatile -- currently ignored */
1908 /* Const -- currently ignored */
1912 complain (&unknown_type_qual_complaint, tq);
1918 /* Parse a procedure descriptor record PR. Note that the procedure is
1919 parsed _after_ the local symbols, now we just insert the extra
1920 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1921 already been placed in the procedure's main block. Note also that
1922 images that have been partially stripped (ld -x) have been deprived
1923 of local symbols, and we have to cope with them here. FIRST_OFF is
1924 the offset of the first procedure for this FDR; we adjust the
1925 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1926 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1927 in question, or NULL to use top_stack->cur_block. */
1929 static void parse_procedure PARAMS ((PDR *, struct symtab *,
1930 struct partial_symtab *));
1933 parse_procedure (pr, search_symtab, pst)
1935 struct symtab *search_symtab;
1936 struct partial_symtab *pst;
1938 struct symbol *s, *i;
1940 struct mips_extra_func_info *e;
1943 /* Simple rule to find files linked "-x" */
1944 if (cur_fdr->rss == -1)
1948 /* Static procedure at address pr->adr. Sigh. */
1949 /* FIXME-32x64. assuming pr->adr fits in long. */
1950 complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr);
1958 (*debug_swap->swap_ext_in) (cur_bfd,
1959 ((char *) debug_info->external_ext
1961 * debug_swap->external_ext_size)),
1963 sh_name = debug_info->ssext + she.asym.iss;
1971 (*debug_swap->swap_sym_in) (cur_bfd,
1972 ((char *) debug_info->external_sym
1973 + ((cur_fdr->isymBase + pr->isym)
1974 * debug_swap->external_sym_size)),
1976 sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
1979 if (search_symtab != NULL)
1982 /* This loses both in the case mentioned (want a static, find a global),
1983 but also if we are looking up a non-mangled name which happens to
1984 match the name of a mangled function. */
1985 /* We have to save the cur_fdr across the call to lookup_symbol.
1986 If the pdr is for a static function and if a global function with
1987 the same name exists, lookup_symbol will eventually read in the symtab
1988 for the global function and clobber cur_fdr. */
1989 FDR *save_cur_fdr = cur_fdr;
1990 s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
1991 cur_fdr = save_cur_fdr;
1995 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),
2001 s = mylookup_symbol (sh_name, top_stack->cur_block,
2002 VAR_NAMESPACE, LOC_BLOCK);
2006 b = SYMBOL_BLOCK_VALUE (s);
2010 complain (&pdr_for_nonsymbol_complaint, sh_name);
2014 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
2015 s = new_symbol (sh_name);
2016 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
2017 SYMBOL_CLASS (s) = LOC_BLOCK;
2018 /* Donno its type, hope int is ok */
2019 SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int);
2020 add_symbol (s, top_stack->cur_block);
2021 /* Wont have symbols for this one */
2023 SYMBOL_BLOCK_VALUE (s) = b;
2024 BLOCK_FUNCTION (b) = s;
2025 BLOCK_START (b) = pr->adr;
2026 /* BOUND used to be the end of procedure's text, but the
2027 argument is no longer passed in. */
2028 BLOCK_END (b) = bound;
2029 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
2030 add_block (b, top_stack->cur_st);
2034 i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);
2038 e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);
2040 e->pdr.isym = (long) s;
2042 /* GDB expects the absolute function start address for the
2043 procedure descriptor in e->pdr.adr.
2044 As the address in the procedure descriptor is usually relative,
2045 we would have to relocate e->pdr.adr with cur_fdr->adr and
2046 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
2047 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
2048 in shared libraries on some systems, and on other systems
2049 e->pdr.adr is sometimes offset by a bogus value.
2050 To work around these problems, we replace e->pdr.adr with
2051 the start address of the function. */
2052 e->pdr.adr = BLOCK_START (b);
2054 /* Correct incorrect setjmp procedure descriptor from the library
2055 to make backtrace through setjmp work. */
2056 if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp"))
2058 complain (&bad_setjmp_pdr_complaint, 0);
2059 e->pdr.pcreg = RA_REGNUM;
2060 e->pdr.regmask = 0x80000000;
2061 e->pdr.regoffset = -4;
2065 /* It would be reasonable that functions that have been compiled
2066 without debugging info have a btNil type for their return value,
2067 and functions that are void and are compiled with debugging info
2069 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2070 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2072 The glevel field in cur_fdr could be used to determine the presence
2073 of debugging info, but GCC doesn't always pass the -g switch settings
2074 to the assembler and GAS doesn't set the glevel field from the -g switch
2076 To work around these problems, the return value type of a TYPE_CODE_VOID
2077 function is adjusted accordingly if no debugging info was found in the
2078 compilation unit. */
2080 if (processing_gcc_compilation == 0
2081 && found_ecoff_debugging_info == 0
2082 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)
2083 SYMBOL_TYPE (s) = nodebug_func_symbol_type;
2086 /* Relocate the extra function info pointed to by the symbol table. */
2089 ecoff_relocate_efi (sym, delta)
2093 struct mips_extra_func_info *e;
2095 e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym);
2097 e->pdr.adr += delta;
2100 /* Parse the external symbol ES. Just call parse_symbol() after
2101 making sure we know where the aux are for it.
2102 BIGEND says whether aux entries are big-endian or little-endian.
2104 This routine clobbers top_stack->cur_block and ->cur_st. */
2106 static void parse_external PARAMS ((EXTR *, int, struct section_offsets *, struct objfile *));
2109 parse_external (es, bigend, section_offsets, objfile)
2112 struct section_offsets *section_offsets;
2113 struct objfile *objfile;
2117 if (es->ifd != ifdNil)
2120 cur_fdr = debug_info->fdr + cur_fd;
2121 ax = debug_info->external_aux + cur_fdr->iauxBase;
2125 cur_fdr = debug_info->fdr;
2129 /* Reading .o files */
2130 if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil)
2133 switch (es->asym.st)
2136 /* These are generated for static symbols in .o files,
2157 /* FIXME: Turn this into a complaint? */
2159 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2160 what, debug_info->ssext + es->asym.iss,
2161 fdr_name (cur_fdr));
2165 switch (es->asym.st)
2169 /* There is no need to parse the external procedure symbols.
2170 If they are from objects compiled without -g, their index will
2171 be indexNil, and the symbol definition from the minimal symbol
2172 is preferrable (yielding a function returning int instead of int).
2173 If the index points to a local procedure symbol, the local
2174 symbol already provides the correct type.
2175 Note that the index of the external procedure symbol points
2176 to the local procedure symbol in the local symbol table, and
2177 _not_ to the auxiliary symbol info. */
2181 /* Global common symbols are resolved by the runtime loader,
2183 if (SC_IS_COMMON (es->asym.sc))
2186 /* Note that the case of a symbol with indexNil must be handled
2187 anyways by parse_symbol(). */
2188 parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile);
2195 /* Parse the line number info for file descriptor FH into
2196 GDB's linetable LT. MIPS' encoding requires a little bit
2197 of magic to get things out. Note also that MIPS' line
2198 numbers can go back and forth, apparently we can live
2199 with that and do not need to reorder our linetables */
2201 static void parse_lines PARAMS ((FDR *, PDR *, struct linetable *, int,
2202 struct partial_symtab *, CORE_ADDR));
2205 parse_lines (fh, pr, lt, maxlines, pst, lowest_pdr_addr)
2208 struct linetable *lt;
2210 struct partial_symtab *pst;
2211 CORE_ADDR lowest_pdr_addr;
2213 unsigned char *base;
2215 int delta, count, lineno = 0;
2217 if (fh->cbLine == 0)
2220 /* Scan by procedure descriptors */
2222 for (j = 0; j < fh->cpd; j++, pr++)
2226 unsigned char *halt;
2228 /* No code for this one */
2229 if (pr->iline == ilineNil ||
2230 pr->lnLow == -1 || pr->lnHigh == -1)
2233 /* Determine start and end address of compressed line bytes for
2235 base = debug_info->line + fh->cbLineOffset;
2236 if (j != (fh->cpd - 1))
2237 halt = base + pr[1].cbLineOffset;
2239 halt = base + fh->cbLine;
2240 base += pr->cbLineOffset;
2242 adr = pst->textlow + pr->adr - lowest_pdr_addr;
2244 l = adr >> 2; /* in words */
2245 for (lineno = pr->lnLow; base < halt;)
2247 count = *base & 0x0f;
2248 delta = *base++ >> 4;
2253 delta = (base[0] << 8) | base[1];
2254 if (delta >= 0x8000)
2258 lineno += delta; /* first delta is 0 */
2260 /* Complain if the line table overflows. Could happen
2261 with corrupt binaries. */
2262 if (lt->nitems >= maxlines)
2264 complain (&bad_linetable_guess_complaint, fdr_name (fh));
2267 k = add_line (lt, lineno, l, k);
2273 /* Master parsing procedure for first-pass reading of file symbols
2274 into a partial_symtab. */
2277 parse_partial_symbols (objfile)
2278 struct objfile *objfile;
2280 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
2281 const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
2282 const bfd_size_type external_ext_size = debug_swap->external_ext_size;
2283 void (*const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *))
2284 = debug_swap->swap_ext_in;
2285 void (*const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
2286 = debug_swap->swap_sym_in;
2287 void (*const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *))
2288 = debug_swap->swap_rfd_in;
2290 HDRR *hdr = &debug_info->symbolic_header;
2291 /* Running pointers */
2296 register EXTR *ext_in;
2299 struct partial_symtab *pst;
2300 int textlow_not_set = 1;
2301 int past_first_source_file = 0;
2303 /* List of current psymtab's include files */
2304 char **psymtab_include_list;
2305 int includes_allocated;
2308 struct pst_map *fdr_to_pst;
2309 /* Index within current psymtab dependency list */
2310 struct partial_symtab **dependency_list;
2311 int dependencies_used, dependencies_allocated;
2312 struct cleanup *old_chain;
2314 enum language prev_language;
2315 asection *text_sect;
2316 int relocatable = 0;
2318 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2319 the shared libraries are prelinked at a high memory address.
2320 We have to adjust the start address of the object file for this case,
2321 by setting it to the start address of the first procedure in the file.
2322 But we should do no adjustments if we are debugging a .o file, where
2323 the text section (and fh->adr) really starts at zero. */
2324 text_sect = bfd_get_section_by_name (cur_bfd, ".text");
2325 if (text_sect != NULL
2326 && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
2329 extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack,
2330 sizeof (EXTR) * hdr->iextMax);
2332 includes_allocated = 30;
2334 psymtab_include_list = (char **) alloca (includes_allocated *
2336 next_symbol_text_func = mdebug_next_symbol_text;
2338 dependencies_allocated = 30;
2339 dependencies_used = 0;
2341 (struct partial_symtab **) alloca (dependencies_allocated *
2342 sizeof (struct partial_symtab *));
2344 last_source_file = NULL;
2349 * Only parse the Local and External symbols, and the Relative FDR.
2350 * Fixup enough of the loader symtab to be able to use it.
2351 * Allocate space only for the file's portions we need to
2356 max_glevel = MIN_GLEVEL;
2358 /* Allocate the map FDR -> PST.
2359 Minor hack: -O3 images might claim some global data belongs
2360 to FDR -1. We`ll go along with that */
2361 fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);
2362 old_chain = make_cleanup (free, fdr_to_pst);
2365 struct partial_symtab *pst = new_psymtab ("", objfile);
2366 fdr_to_pst[-1].pst = pst;
2370 /* Allocate the global pending list. */
2372 ((struct mdebug_pending **)
2373 obstack_alloc (&objfile->psymbol_obstack,
2374 hdr->ifdMax * sizeof (struct mdebug_pending *)));
2375 memset ((PTR) pending_list, 0,
2376 hdr->ifdMax * sizeof (struct mdebug_pending *));
2378 /* Pass 0 over external syms: swap them in. */
2379 ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));
2380 make_cleanup (free, ext_block);
2382 ext_out = (char *) debug_info->external_ext;
2383 ext_out_end = ext_out + hdr->iextMax * external_ext_size;
2385 for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
2386 (*swap_ext_in) (cur_bfd, ext_out, ext_in);
2388 /* Pass 1 over external syms: Presize and partition the list */
2390 ext_in_end = ext_in + hdr->iextMax;
2391 for (; ext_in < ext_in_end; ext_in++)
2393 /* See calls to complain below. */
2394 if (ext_in->ifd >= -1
2395 && ext_in->ifd < hdr->ifdMax
2396 && ext_in->asym.iss >= 0
2397 && ext_in->asym.iss < hdr->issExtMax)
2398 fdr_to_pst[ext_in->ifd].n_globals++;
2401 /* Pass 1.5 over files: partition out global symbol space */
2403 for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
2405 fdr_to_pst[f_idx].globals_offset = s_idx;
2406 s_idx += fdr_to_pst[f_idx].n_globals;
2407 fdr_to_pst[f_idx].n_globals = 0;
2412 For ECOFF in ELF, we skip the creation of the minimal symbols.
2413 The ECOFF symbols should be a subset of the Elf symbols, and the
2414 section information of the elf symbols will be more accurate.
2415 FIXME! What about Irix 5's native linker?
2417 By default, Elf sections which don't exist in ECOFF
2418 get put in ECOFF's absolute section by the gnu linker.
2419 Since absolute sections don't get relocated, we
2420 end up calculating an address different from that of
2421 the symbol's minimal symbol (created earlier from the
2424 To fix this, either :
2425 1) don't create the duplicate symbol
2426 (assumes ECOFF symtab is a subset of the ELF symtab;
2427 assumes no side-effects result from ignoring ECOFF symbol)
2428 2) create it, only if lookup for existing symbol in ELF's minimal
2431 assumes no side-effects result from ignoring ECOFF symbol)
2432 3) create it, but lookup ELF's minimal symbol and use it's section
2433 during relocation, then modify "uniqify" phase to merge and
2434 eliminate the duplicate symbol
2435 (highly inefficient)
2437 I've implemented #1 here...
2438 Skip the creation of the minimal symbols based on the ECOFF
2441 /* Pass 2 over external syms: fill in external symbols */
2443 ext_in_end = ext_in + hdr->iextMax;
2444 for (; ext_in < ext_in_end; ext_in++)
2446 enum minimal_symbol_type ms_type = mst_text;
2447 CORE_ADDR svalue = ext_in->asym.value;
2449 /* The Irix 5 native tools seem to sometimes generate bogus
2450 external symbols. */
2451 if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
2453 complain (&bad_ext_ifd_complaint, ext_in->ifd, hdr->ifdMax);
2456 if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
2458 complain (&bad_ext_iss_complaint, ext_in->asym.iss,
2463 extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
2464 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
2467 if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil)
2471 /* Pass 3 over files, over local syms: fill in static symbols */
2472 name = debug_info->ssext + ext_in->asym.iss;
2474 /* Process ECOFF Symbol Types and Storage Classes */
2475 switch (ext_in->asym.st)
2478 /* Beginnning of Procedure */
2479 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2482 /* Load time only static procs */
2483 ms_type = mst_file_text;
2484 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2487 /* External symbol */
2488 if (SC_IS_COMMON (ext_in->asym.sc))
2490 /* The value of a common symbol is its size, not its address.
2494 else if (SC_IS_DATA (ext_in->asym.sc))
2497 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2499 else if (SC_IS_BSS (ext_in->asym.sc))
2502 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2509 if (SC_IS_TEXT (ext_in->asym.sc))
2511 ms_type = mst_file_text;
2512 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2514 else if (SC_IS_DATA (ext_in->asym.sc))
2516 ms_type = mst_file_data;
2517 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2519 else if (SC_IS_BSS (ext_in->asym.sc))
2521 ms_type = mst_file_bss;
2522 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2529 /* The alpha has the section start addresses in stLocal symbols
2530 whose name starts with a `.'. Skip those but complain for all
2531 other stLocal symbols.
2532 Irix6 puts the section start addresses in stNil symbols, skip
2538 ms_type = mst_unknown;
2539 complain (&unknown_ext_complaint, name);
2541 if (!ECOFF_IN_ELF (cur_bfd))
2542 prim_record_minimal_symbol (name, svalue, ms_type, objfile);
2545 /* Pass 3 over files, over local syms: fill in static symbols */
2546 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2548 struct partial_symtab *save_pst;
2552 cur_fdr = fh = debug_info->fdr + f_idx;
2556 fdr_to_pst[f_idx].pst = NULL;
2560 /* Determine the start address for this object file from the
2561 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2565 if (relocatable || textlow != 0)
2566 textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2570 pst = start_psymtab_common (objfile, objfile->section_offsets,
2573 objfile->global_psymbols.next,
2574 objfile->static_psymbols.next);
2575 pst->read_symtab_private = ((char *)
2576 obstack_alloc (&objfile->psymbol_obstack,
2577 sizeof (struct symloc)));
2578 memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc));
2581 FDR_IDX (pst) = f_idx;
2582 CUR_BFD (pst) = cur_bfd;
2583 DEBUG_SWAP (pst) = debug_swap;
2584 DEBUG_INFO (pst) = debug_info;
2585 PENDING_LIST (pst) = pending_list;
2587 /* The way to turn this into a symtab is to call... */
2588 pst->read_symtab = mdebug_psymtab_to_symtab;
2590 /* Set up language for the pst.
2591 The language from the FDR is used if it is unambigious (e.g. cfront
2592 with native cc and g++ will set the language to C).
2593 Otherwise we have to deduce the language from the filename.
2594 Native ecoff has every header file in a separate FDR, so
2595 deduce_language_from_filename will return language_unknown for
2596 a header file, which is not what we want.
2597 But the FDRs for the header files are after the FDR for the source
2598 file, so we can assign the language of the source file to the
2599 following header files. Then we save the language in the private
2600 pst data so that we can reuse it when building symtabs. */
2601 prev_language = psymtab_language;
2605 case langCplusplusV2:
2606 psymtab_language = language_cplus;
2609 psymtab_language = deduce_language_from_filename (fdr_name (fh));
2612 if (psymtab_language == language_unknown)
2613 psymtab_language = prev_language;
2614 PST_PRIVATE (pst)->pst_language = psymtab_language;
2616 pst->texthigh = pst->textlow;
2618 /* For stabs-in-ecoff files, the second symbol must be @stab.
2619 This symbol is emitted by mips-tfile to signal that the
2620 current object file uses encapsulated stabs instead of mips
2621 ecoff for local symbols. (It is the second symbol because
2622 the first symbol is the stFile used to signal the start of a
2624 processing_gcc_compilation = 0;
2627 (*swap_sym_in) (cur_bfd,
2628 ((char *) debug_info->external_sym
2629 + (fh->isymBase + 1) * external_sym_size),
2631 if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol))
2632 processing_gcc_compilation = 2;
2635 if (processing_gcc_compilation != 0)
2637 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
2642 (*swap_sym_in) (cur_bfd,
2643 (((char *) debug_info->external_sym)
2644 + (fh->isymBase + cur_sdx) * external_sym_size),
2646 type_code = ECOFF_UNMARK_STAB (sh.index);
2647 if (!ECOFF_IS_STAB (&sh))
2649 if (sh.st == stProc || sh.st == stStaticProc)
2654 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2655 if (sh.st == stStaticProc)
2657 namestring = debug_info->ss + fh->issBase + sh.iss;
2658 prim_record_minimal_symbol_and_info (namestring,
2662 SECT_OFF_TEXT (objfile),
2666 procaddr = sh.value;
2668 isym = AUX_GET_ISYM (fh->fBigendian,
2669 (debug_info->external_aux
2672 (*swap_sym_in) (cur_bfd,
2673 ((char *) debug_info->external_sym
2674 + ((fh->isymBase + isym - 1)
2675 * external_sym_size)),
2679 CORE_ADDR high = procaddr + sh.value;
2681 /* Kludge for Irix 5.2 zero fh->adr. */
2683 && (pst->textlow == 0 || procaddr < pst->textlow))
2684 pst->textlow = procaddr;
2685 if (high > pst->texthigh)
2686 pst->texthigh = high;
2689 else if (sh.st == stStatic)
2704 namestring = debug_info->ss + fh->issBase + sh.iss;
2705 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2706 prim_record_minimal_symbol_and_info (namestring,
2710 SECT_OFF_DATA (objfile),
2716 /* FIXME! Shouldn't this use cases for bss,
2717 then have the default be abs? */
2718 namestring = debug_info->ss + fh->issBase + sh.iss;
2719 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2720 prim_record_minimal_symbol_and_info (namestring,
2724 SECT_OFF_BSS (objfile),
2732 /* Handle stabs continuation */
2734 char *stabstring = debug_info->ss + fh->issBase + sh.iss;
2735 int len = strlen (stabstring);
2736 while (stabstring[len - 1] == '\\')
2739 char *stabstring1 = stabstring;
2743 /* Ignore continuation char from 1st string */
2746 /* Read next stabstring */
2748 (*swap_sym_in) (cur_bfd,
2749 (((char *) debug_info->external_sym)
2750 + (fh->isymBase + cur_sdx)
2751 * external_sym_size),
2753 stabstring2 = debug_info->ss + fh->issBase + sh2.iss;
2754 len2 = strlen (stabstring2);
2756 /* Concatinate stabstring2 with stabstring1 */
2758 && stabstring != debug_info->ss + fh->issBase + sh.iss)
2759 stabstring = xrealloc (stabstring, len + len2 + 1);
2761 stabstring = xmalloc (len + len2 + 1);
2762 strcpy (stabstring, stabstring1);
2763 strcpy (stabstring + len, stabstring2);
2767 #define SET_NAMESTRING() \
2768 namestring = stabstring
2769 #define CUR_SYMBOL_TYPE type_code
2770 #define CUR_SYMBOL_VALUE sh.value
2771 #define START_PSYMTAB(ofile,fname,low,symoff,global_syms,static_syms)\
2773 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps,textlow_not_set) (void)0
2774 #define HANDLE_RBRAC(val) \
2775 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2776 #include "partial-stab.h"
2779 && stabstring != debug_info->ss + fh->issBase + sh.iss)
2782 /* end - Handle continuation */
2787 for (cur_sdx = 0; cur_sdx < fh->csym;)
2790 enum address_class class;
2792 (*swap_sym_in) (cur_bfd,
2793 ((char *) debug_info->external_sym
2794 + ((fh->isymBase + cur_sdx)
2795 * external_sym_size)),
2798 if (ECOFF_IS_STAB (&sh))
2804 /* Non absolute static symbols go into the minimal table. */
2805 if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil
2806 || (sh.index == indexNil
2807 && (sh.st != stStatic || sh.sc == scAbs)))
2809 /* FIXME, premature? */
2814 name = debug_info->ss + fh->issBase + sh.iss;
2820 /* The value of a stEnd symbol is the displacement from the
2821 corresponding start symbol value, do not relocate it. */
2823 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2830 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2834 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2845 prim_record_minimal_symbol_and_info (name, sh.value,
2846 mst_file_text, NULL,
2847 SECT_OFF_TEXT (objfile), NULL,
2853 /* Usually there is a local and a global stProc symbol
2854 for a function. This means that the function name
2855 has already been entered into the mimimal symbol table
2856 while processing the global symbols in pass 2 above.
2857 One notable exception is the PROGRAM name from
2858 f77 compiled executables, it is only put out as
2859 local stProc symbol, and a global MAIN__ stProc symbol
2860 points to it. It doesn't matter though, as gdb is
2861 still able to find the PROGRAM name via the partial
2862 symbol table, and the MAIN__ symbol via the minimal
2864 if (sh.st == stProc)
2865 add_psymbol_to_list (name, strlen (name),
2866 VAR_NAMESPACE, LOC_BLOCK,
2867 &objfile->global_psymbols,
2868 0, sh.value, psymtab_language, objfile);
2870 add_psymbol_to_list (name, strlen (name),
2871 VAR_NAMESPACE, LOC_BLOCK,
2872 &objfile->static_psymbols,
2873 0, sh.value, psymtab_language, objfile);
2875 /* Skip over procedure to next one. */
2876 if (sh.index >= hdr->iauxMax)
2878 /* Should not happen, but does when cross-compiling
2879 with the MIPS compiler. FIXME -- pull later. */
2880 complain (&index_complaint, name);
2881 new_sdx = cur_sdx + 1; /* Don't skip at all */
2884 new_sdx = AUX_GET_ISYM (fh->fBigendian,
2885 (debug_info->external_aux
2888 procaddr = sh.value;
2890 if (new_sdx <= cur_sdx)
2892 /* This should not happen either... FIXME. */
2893 complain (&aux_index_complaint, name);
2894 new_sdx = cur_sdx + 1; /* Don't skip backward */
2898 (*swap_sym_in) (cur_bfd,
2899 ((char *) debug_info->external_sym
2900 + ((fh->isymBase + cur_sdx - 1)
2901 * external_sym_size)),
2906 /* Kludge for Irix 5.2 zero fh->adr. */
2908 && (pst->textlow == 0 || procaddr < pst->textlow))
2909 pst->textlow = procaddr;
2911 high = procaddr + sh.value;
2912 if (high > pst->texthigh)
2913 pst->texthigh = high;
2916 case stStatic: /* Variable */
2917 if (SC_IS_DATA (sh.sc))
2918 prim_record_minimal_symbol_and_info (name, sh.value,
2919 mst_file_data, NULL,
2920 SECT_OFF_DATA (objfile),
2924 prim_record_minimal_symbol_and_info (name, sh.value,
2926 SECT_OFF_BSS (objfile),
2932 case stIndirect: /* Irix5 forward declaration */
2933 /* Skip forward declarations from Irix5 cc */
2936 case stTypedef: /* Typedef */
2937 /* Skip typedefs for forward declarations and opaque
2938 structs from alpha and mips cc. */
2939 if (sh.iss == 0 || has_opaque_xref (fh, &sh))
2941 class = LOC_TYPEDEF;
2944 case stConstant: /* Constant decl */
2951 case stBlock: /* { }, str, un, enum */
2952 /* Do not create a partial symbol for cc unnamed aggregates
2953 and gcc empty aggregates. */
2954 if ((sh.sc == scInfo
2955 || SC_IS_COMMON (sh.sc))
2957 && sh.index != cur_sdx + 2)
2959 add_psymbol_to_list (name, strlen (name),
2960 STRUCT_NAMESPACE, LOC_TYPEDEF,
2961 &objfile->static_psymbols,
2963 psymtab_language, objfile);
2965 handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);
2967 /* Skip over the block */
2969 if (new_sdx <= cur_sdx)
2971 /* This happens with the Ultrix kernel. */
2972 complain (&block_index_complaint, name);
2973 new_sdx = cur_sdx + 1; /* Don't skip backward */
2978 case stFile: /* File headers */
2979 case stLabel: /* Labels */
2980 case stEnd: /* Ends of files */
2983 case stLocal: /* Local variables */
2984 /* Normally these are skipped because we skip over
2985 all blocks we see. However, these can occur
2986 as visible symbols in a .h file that contains code. */
2990 /* Both complaints are valid: one gives symbol name,
2991 the other the offending symbol type. */
2992 complain (&unknown_sym_complaint, name);
2993 complain (&unknown_st_complaint, sh.st);
2997 /* Use this gdb symbol */
2998 add_psymbol_to_list (name, strlen (name),
2999 VAR_NAMESPACE, class,
3000 &objfile->static_psymbols,
3001 0, sh.value, psymtab_language, objfile);
3003 cur_sdx++; /* Go to next file symbol */
3006 /* Now do enter the external symbols. */
3007 ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
3008 cur_sdx = fdr_to_pst[f_idx].n_globals;
3009 PST_PRIVATE (save_pst)->extern_count = cur_sdx;
3010 PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
3011 for (; --cur_sdx >= 0; ext_ptr++)
3013 enum address_class class;
3018 if (ext_ptr->ifd != f_idx)
3020 psh = &ext_ptr->asym;
3022 /* Do not add undefined symbols to the partial symbol table. */
3023 if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil)
3026 svalue = psh->value;
3031 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3038 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3042 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
3049 /* These are generated for static symbols in .o files,
3054 /* External procedure symbols have been entered
3055 into the minimal symbol table in pass 2 above.
3056 Ignore them, as parse_external will ignore them too. */
3062 complain (&unknown_ext_complaint,
3063 debug_info->ssext + psh->iss);
3064 /* Fall through, pretend it's global. */
3066 /* Global common symbols are resolved by the runtime loader,
3068 if (SC_IS_COMMON (psh->sc))
3074 name = debug_info->ssext + psh->iss;
3075 add_psymbol_to_list (name, strlen (name),
3076 VAR_NAMESPACE, class,
3077 &objfile->global_psymbols,
3079 psymtab_language, objfile);
3083 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3084 empty and put on the free list. */
3085 fdr_to_pst[f_idx].pst = end_psymtab (save_pst,
3086 psymtab_include_list, includes_used,
3087 -1, save_pst->texthigh,
3088 dependency_list, dependencies_used, textlow_not_set);
3090 dependencies_used = 0;
3092 if (objfile->ei.entry_point >= save_pst->textlow &&
3093 objfile->ei.entry_point < save_pst->texthigh)
3095 objfile->ei.entry_file_lowpc = save_pst->textlow;
3096 objfile->ei.entry_file_highpc = save_pst->texthigh;
3099 /* The objfile has its functions reordered if this partial symbol
3100 table overlaps any other partial symbol table.
3101 We cannot assume a reordered objfile if a partial symbol table
3102 is contained within another partial symbol table, as partial symbol
3103 tables for include files with executable code are contained
3104 within the partial symbol table for the including source file,
3105 and we do not want to flag the objfile reordered for these cases.
3107 This strategy works well for Irix-5.2 shared libraries, but we
3108 might have to use a more elaborate (and slower) algorithm for
3110 save_pst = fdr_to_pst[f_idx].pst;
3111 if (save_pst != NULL
3112 && save_pst->textlow != 0
3113 && !(objfile->flags & OBJF_REORDERED))
3115 ALL_OBJFILE_PSYMTABS (objfile, pst)
3118 && save_pst->textlow >= pst->textlow
3119 && save_pst->textlow < pst->texthigh
3120 && save_pst->texthigh > pst->texthigh)
3122 objfile->flags |= OBJF_REORDERED;
3129 /* Now scan the FDRs for dependencies */
3130 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
3132 fh = f_idx + debug_info->fdr;
3133 pst = fdr_to_pst[f_idx].pst;
3135 if (pst == (struct partial_symtab *) NULL)
3138 /* This should catch stabs-in-ecoff. */
3142 /* Skip the first file indirect entry as it is a self dependency
3143 for source files or a reverse .h -> .c dependency for header files. */
3144 pst->number_of_dependencies = 0;
3146 ((struct partial_symtab **)
3147 obstack_alloc (&objfile->psymbol_obstack,
3149 * sizeof (struct partial_symtab *))));
3150 for (s_idx = 1; s_idx < fh->crfd; s_idx++)
3154 (*swap_rfd_in) (cur_bfd,
3155 ((char *) debug_info->external_rfd
3156 + (fh->rfdBase + s_idx) * external_rfd_size),
3158 if (rh < 0 || rh >= hdr->ifdMax)
3160 complain (&bad_file_number_complaint, rh);
3164 /* Skip self dependencies of header files. */
3168 /* Do not add to dependeny list if psymtab was empty. */
3169 if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL)
3171 pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;
3175 /* Remove the dummy psymtab created for -O3 images above, if it is
3176 still empty, to enable the detection of stripped executables. */
3177 if (objfile->psymtabs->next == NULL
3178 && objfile->psymtabs->number_of_dependencies == 0
3179 && objfile->psymtabs->n_global_syms == 0
3180 && objfile->psymtabs->n_static_syms == 0)
3181 objfile->psymtabs = NULL;
3182 do_cleanups (old_chain);
3185 /* If the current psymbol has an enumerated type, we need to add
3186 all the the enum constants to the partial symbol table. */
3189 handle_psymbol_enumerators (objfile, fh, stype, svalue)
3190 struct objfile *objfile;
3195 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
3196 void (*const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
3197 = debug_swap->swap_sym_in;
3198 char *ext_sym = ((char *) debug_info->external_sym
3199 + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
3209 /* It is an enumerated type if the next symbol entry is a stMember
3210 and its auxiliary index is indexNil or its auxiliary entry
3211 is a plain btNil or btVoid.
3212 Alpha cc -migrate enums are recognized by a zero index and
3213 a zero symbol value.
3214 DU 4.0 cc enums are recognized by a member type of btEnum without
3215 qualifiers and a zero symbol value. */
3216 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3217 if (sh.st != stMember)
3220 if (sh.index == indexNil
3221 || (sh.index == 0 && svalue == 0))
3223 (*debug_swap->swap_tir_in) (fh->fBigendian,
3224 &(debug_info->external_aux
3225 + fh->iauxBase + sh.index)->a_ti,
3227 if ((tir.bt != btNil
3229 && (tir.bt != btEnum || svalue != 0))
3230 || tir.tq0 != tqNil)
3242 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3243 if (sh.st != stMember)
3245 name = debug_info->ss + cur_fdr->issBase + sh.iss;
3247 /* Note that the value doesn't matter for enum constants
3248 in psymtabs, just in symtabs. */
3249 add_psymbol_to_list (name, strlen (name),
3250 VAR_NAMESPACE, LOC_CONST,
3251 &objfile->static_psymbols, 0,
3252 (CORE_ADDR) 0, psymtab_language, objfile);
3253 ext_sym += external_sym_size;
3258 mdebug_next_symbol_text (objfile)
3259 struct objfile *objfile; /* argument objfile is currently unused */
3264 (*debug_swap->swap_sym_in) (cur_bfd,
3265 ((char *) debug_info->external_sym
3266 + ((cur_fdr->isymBase + cur_sdx)
3267 * debug_swap->external_sym_size)),
3269 return debug_info->ss + cur_fdr->issBase + sh.iss;
3272 /* Ancillary function to psymtab_to_symtab(). Does all the work
3273 for turning the partial symtab PST into a symtab, recurring
3274 first on all dependent psymtabs. The argument FILENAME is
3275 only passed so we can see in debug stack traces what file
3278 This function has a split personality, based on whether the
3279 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3280 The flow of control and even the memory allocation differs. FIXME. */
3283 psymtab_to_symtab_1 (pst, filename)
3284 struct partial_symtab *pst;
3287 bfd_size_type external_sym_size;
3288 bfd_size_type external_pdr_size;
3289 void (*swap_sym_in) PARAMS ((bfd *, PTR, SYMR *));
3290 void (*swap_pdr_in) PARAMS ((bfd *, PTR, PDR *));
3294 struct linetable *lines;
3295 CORE_ADDR lowest_pdr_addr = 0;
3301 /* Read in all partial symbtabs on which this one is dependent.
3302 NOTE that we do have circular dependencies, sigh. We solved
3303 that by setting pst->readin before this point. */
3305 for (i = 0; i < pst->number_of_dependencies; i++)
3306 if (!pst->dependencies[i]->readin)
3308 /* Inform about additional files to be read in. */
3311 fputs_filtered (" ", gdb_stdout);
3313 fputs_filtered ("and ", gdb_stdout);
3315 printf_filtered ("%s...",
3316 pst->dependencies[i]->filename);
3317 wrap_here (""); /* Flush output */
3318 gdb_flush (gdb_stdout);
3320 /* We only pass the filename for debug purposes */
3321 psymtab_to_symtab_1 (pst->dependencies[i],
3322 pst->dependencies[i]->filename);
3325 /* Do nothing if this is a dummy psymtab. */
3327 if (pst->n_global_syms == 0 && pst->n_static_syms == 0
3328 && pst->textlow == 0 && pst->texthigh == 0)
3331 /* Now read the symbols for this symtab */
3333 cur_bfd = CUR_BFD (pst);
3334 debug_swap = DEBUG_SWAP (pst);
3335 debug_info = DEBUG_INFO (pst);
3336 pending_list = PENDING_LIST (pst);
3337 external_sym_size = debug_swap->external_sym_size;
3338 external_pdr_size = debug_swap->external_pdr_size;
3339 swap_sym_in = debug_swap->swap_sym_in;
3340 swap_pdr_in = debug_swap->swap_pdr_in;
3341 current_objfile = pst->objfile;
3342 cur_fd = FDR_IDX (pst);
3343 fh = ((cur_fd == -1)
3345 : debug_info->fdr + cur_fd);
3348 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3349 processing_gcc_compilation = 0;
3350 if (fh != (FDR *) NULL && fh->csym >= 2)
3354 (*swap_sym_in) (cur_bfd,
3355 ((char *) debug_info->external_sym
3356 + (fh->isymBase + 1) * external_sym_size),
3358 if (STREQ (debug_info->ss + fh->issBase + sh.iss,
3361 /* We indicate that this is a GCC compilation so that certain
3362 features will be enabled in stabsread/dbxread. */
3363 processing_gcc_compilation = 2;
3367 if (processing_gcc_compilation != 0)
3370 /* This symbol table contains stabs-in-ecoff entries. */
3372 /* Parse local symbols first */
3374 if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
3376 current_objfile = NULL;
3379 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
3385 (*swap_sym_in) (cur_bfd,
3386 (((char *) debug_info->external_sym)
3387 + (fh->isymBase + cur_sdx) * external_sym_size),
3389 name = debug_info->ss + fh->issBase + sh.iss;
3391 /* XXX This is a hack. It will go away! */
3392 if (ECOFF_IS_STAB (&sh) || (name[0] == '#'))
3394 int type_code = ECOFF_UNMARK_STAB (sh.index);
3396 /* We should never get non N_STAB symbols here, but they
3397 should be harmless, so keep process_one_symbol from
3398 complaining about them. */
3399 if (type_code & N_STAB)
3401 process_one_symbol (type_code, 0, valu, name,
3402 pst->section_offsets, pst->objfile);
3404 /* Similarly a hack. */
3405 else if (name[0] == '#')
3407 process_one_symbol (N_SLINE, 0, valu, name,
3408 pst->section_offsets, pst->objfile);
3410 if (type_code == N_FUN)
3412 /* Make up special symbol to contain
3413 procedure specific info */
3414 struct mips_extra_func_info *e =
3415 ((struct mips_extra_func_info *)
3416 obstack_alloc (¤t_objfile->symbol_obstack,
3417 sizeof (struct mips_extra_func_info)));
3418 struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);
3420 memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));
3421 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
3422 SYMBOL_CLASS (s) = LOC_CONST;
3423 SYMBOL_TYPE (s) = mdebug_type_void;
3424 SYMBOL_VALUE (s) = (long) e;
3425 e->pdr.framereg = -1;
3426 add_symbol_to_list (s, &local_symbols);
3429 else if (sh.st == stLabel)
3431 if (sh.index == indexNil)
3433 /* This is what the gcc2_compiled and __gnu_compiled_*
3434 show up as. So don't complain. */
3439 /* Handle encoded stab line number. */
3440 valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile));
3441 record_line (current_subfile, sh.index, valu);
3444 else if (sh.st == stProc || sh.st == stStaticProc
3445 || sh.st == stStatic || sh.st == stEnd)
3446 /* These are generated by gcc-2.x, do not complain */
3449 complain (&stab_unknown_complaint, name);
3451 st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT (pst->objfile));
3454 /* Sort the symbol table now, we are done adding symbols to it.
3455 We must do this before parse_procedure calls lookup_symbol. */
3456 sort_symtab_syms (st);
3458 /* There used to be a call to sort_blocks here, but this should not
3459 be necessary for stabs symtabs. And as sort_blocks modifies the
3460 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3461 it did the wrong thing if the first procedure in a file was
3462 generated via asm statements. */
3464 /* Fill in procedure info next. */
3468 struct cleanup *old_chain;
3474 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
3475 old_chain = make_cleanup (free, pr_block);
3477 pdr_ptr = ((char *) debug_info->external_pdr
3478 + fh->ipdFirst * external_pdr_size);
3479 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
3483 pdr_ptr += external_pdr_size, pdr_in++)
3485 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
3487 /* Determine lowest PDR address, the PDRs are not always
3489 if (pdr_in == pr_block)
3490 lowest_pdr_addr = pdr_in->adr;
3491 else if (pdr_in->adr < lowest_pdr_addr)
3492 lowest_pdr_addr = pdr_in->adr;
3496 pdr_in_end = pdr_in + fh->cpd;
3497 for (; pdr_in < pdr_in_end; pdr_in++)
3498 parse_procedure (pdr_in, st, pst);
3500 do_cleanups (old_chain);
3505 /* This symbol table contains ordinary ecoff entries. */
3511 /* How many symbols will we need */
3512 /* FIXME, this does not count enum values. */
3513 f_max = pst->n_global_syms + pst->n_static_syms;
3517 st = new_symtab ("unknown", f_max, 0, pst->objfile);
3521 f_max += fh->csym + fh->cpd;
3522 maxlines = 2 * fh->cline;
3523 st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);
3525 /* The proper language was already determined when building
3526 the psymtab, use it. */
3527 st->language = PST_PRIVATE (pst)->pst_language;
3530 psymtab_language = st->language;
3532 lines = LINETABLE (st);
3534 /* Get a new lexical context */
3536 push_parse_stack ();
3537 top_stack->cur_st = st;
3538 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),
3540 BLOCK_START (top_stack->cur_block) = pst->textlow;
3541 BLOCK_END (top_stack->cur_block) = 0;
3542 top_stack->blocktype = stFile;
3543 top_stack->maxsyms = 2 * f_max;
3544 top_stack->cur_type = 0;
3545 top_stack->procadr = 0;
3546 top_stack->numargs = 0;
3547 found_ecoff_debugging_info = 0;
3554 /* Parse local symbols first */
3555 sym_ptr = ((char *) debug_info->external_sym
3556 + fh->isymBase * external_sym_size);
3557 sym_end = sym_ptr + fh->csym * external_sym_size;
3558 while (sym_ptr < sym_end)
3563 (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
3564 c = parse_symbol (&sh,
3565 debug_info->external_aux + fh->iauxBase,
3566 sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
3567 sym_ptr += c * external_sym_size;
3570 /* Linenumbers. At the end, check if we can save memory.
3571 parse_lines has to look ahead an arbitrary number of PDR
3572 structures, so we swap them all first. */
3576 struct cleanup *old_chain;
3582 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
3584 old_chain = make_cleanup (free, pr_block);
3586 pdr_ptr = ((char *) debug_info->external_pdr
3587 + fh->ipdFirst * external_pdr_size);
3588 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
3592 pdr_ptr += external_pdr_size, pdr_in++)
3594 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
3596 /* Determine lowest PDR address, the PDRs are not always
3598 if (pdr_in == pr_block)
3599 lowest_pdr_addr = pdr_in->adr;
3600 else if (pdr_in->adr < lowest_pdr_addr)
3601 lowest_pdr_addr = pdr_in->adr;
3604 parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr);
3605 if (lines->nitems < fh->cline)
3606 lines = shrink_linetable (lines);
3608 /* Fill in procedure info next. */
3610 pdr_in_end = pdr_in + fh->cpd;
3611 for (; pdr_in < pdr_in_end; pdr_in++)
3612 parse_procedure (pdr_in, 0, pst);
3614 do_cleanups (old_chain);
3618 LINETABLE (st) = lines;
3620 /* .. and our share of externals.
3621 XXX use the global list to speed up things here. how?
3622 FIXME, Maybe quit once we have found the right number of ext's? */
3623 top_stack->cur_st = st;
3624 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
3626 top_stack->blocktype = stFile;
3628 = (debug_info->symbolic_header.isymMax
3629 + debug_info->symbolic_header.ipdMax
3630 + debug_info->symbolic_header.iextMax);
3632 ext_ptr = PST_PRIVATE (pst)->extern_tab;
3633 for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
3634 parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
3636 /* If there are undefined symbols, tell the user.
3637 The alpha has an undefined symbol for every symbol that is
3638 from a shared library, so tell the user only if verbose is on. */
3639 if (info_verbose && n_undef_symbols)
3641 printf_filtered ("File %s contains %d unresolved references:",
3642 st->filename, n_undef_symbols);
3643 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3644 n_undef_vars, n_undef_procs, n_undef_labels);
3645 n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
3652 /* Sort the symbol table now, we are done adding symbols to it. */
3653 sort_symtab_syms (st);
3658 /* Now link the psymtab and the symtab. */
3661 current_objfile = NULL;
3664 /* Ancillary parsing procedures. */
3666 /* Return 1 if the symbol pointed to by SH has a cross reference
3667 to an opaque aggregate type, else 0. */
3670 has_opaque_xref (fh, sh)
3679 if (sh->index == indexNil)
3682 ax = debug_info->external_aux + fh->iauxBase + sh->index;
3683 (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
3684 if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
3688 (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
3689 if (rn->rfd == 0xfff)
3690 rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
3698 /* Lookup the type at relative index RN. Return it in TPP
3699 if found and in any event come up with its name PNAME.
3700 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3701 Return value says how many aux symbols we ate. */
3704 cross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name)
3708 enum type_code type_code; /* Use to alloc new type if none is found. */
3720 struct mdebug_pending *pend;
3722 *tpp = (struct type *) NULL;
3724 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
3726 /* Escape index means 'the next one' */
3727 if (rn->rfd == 0xfff)
3730 rf = AUX_GET_ISYM (bigend, ax + 1);
3737 /* mips cc uses a rf of -1 for opaque struct definitions.
3738 Set TYPE_FLAG_STUB for these types so that check_typedef will
3739 resolve them if the struct gets defined in another compilation unit. */
3742 *pname = "<undefined>";
3743 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
3744 TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB;
3748 /* mips cc uses an escaped rn->index of 0 for struct return types
3749 of procedures that were compiled without -g. These will always remain
3751 if (rn->rfd == 0xfff && rn->index == 0)
3753 *pname = "<undefined>";
3757 /* Find the relative file descriptor and the symbol in it. */
3758 fh = get_rfd (fd, rf);
3759 xref_fd = fh - debug_info->fdr;
3761 if (rn->index >= fh->csym)
3763 /* File indirect entry is corrupt. */
3764 *pname = "<illegal>";
3765 complain (&bad_rfd_entry_complaint,
3766 sym_name, xref_fd, rn->index);
3770 /* If we have processed this symbol then we left a forwarding
3771 pointer to the type in the pending list. If not, we`ll put
3772 it in a list of pending types, to be processed later when
3773 the file will be. In any event, we collect the name for the
3776 esh = ((char *) debug_info->external_sym
3777 + ((fh->isymBase + rn->index)
3778 * debug_swap->external_sym_size));
3779 (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
3781 /* Make sure that this type of cross reference can be handled. */
3782 if ((sh.sc != scInfo
3783 || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
3784 && sh.st != stStruct && sh.st != stUnion
3785 && sh.st != stEnum))
3786 && (sh.st != stBlock || !SC_IS_COMMON (sh.sc)))
3788 /* File indirect entry is corrupt. */
3789 *pname = "<illegal>";
3790 complain (&bad_rfd_entry_complaint,
3791 sym_name, xref_fd, rn->index);
3795 *pname = debug_info->ss + fh->issBase + sh.iss;
3797 pend = is_pending_symbol (fh, esh);
3802 /* We have not yet seen this type. */
3804 if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
3808 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3810 a) forward declarations of structs/unions/enums which are not
3811 defined in this compilation unit.
3812 For these the type will be void. This is a bad design decision
3813 as cross referencing across compilation units is impossible
3814 due to the missing name.
3815 b) forward declarations of structs/unions/enums/typedefs which
3816 are defined later in this file or in another file in the same
3817 compilation unit. Irix5 cc uses a stIndirect symbol for this.
3818 Simply cross reference those again to get the true type.
3819 The forward references are not entered in the pending list and
3820 in the symbol table. */
3822 (*debug_swap->swap_tir_in) (bigend,
3823 &(debug_info->external_aux
3824 + fh->iauxBase + sh.index)->a_ti,
3826 if (tir.tq0 != tqNil)
3827 complain (&illegal_forward_tq0_complaint, sym_name);
3831 *tpp = init_type (type_code, 0, 0, (char *) NULL,
3833 *pname = "<undefined>";
3840 (debug_info->external_aux
3841 + fh->iauxBase + sh.index + 1),
3842 tpp, type_code, pname,
3843 fh->fBigendian, sym_name);
3847 /* Follow a forward typedef. This might recursively
3848 call cross_ref till we get a non typedef'ed type.
3849 FIXME: This is not correct behaviour, but gdb currently
3850 cannot handle typedefs without type copying. Type
3851 copying is impossible as we might have mutual forward
3852 references between two files and the copied type would not
3853 get filled in when we later parse its definition. */
3854 *tpp = parse_type (xref_fd,
3855 debug_info->external_aux + fh->iauxBase,
3859 debug_info->ss + fh->issBase + sh.iss);
3860 add_pending (fh, esh, *tpp);
3864 complain (&illegal_forward_bt_complaint, tir.bt, sym_name);
3865 *tpp = init_type (type_code, 0, 0, (char *) NULL,
3871 else if (sh.st == stTypedef)
3873 /* Parse the type for a normal typedef. This might recursively call
3874 cross_ref till we get a non typedef'ed type.
3875 FIXME: This is not correct behaviour, but gdb currently
3876 cannot handle typedefs without type copying. But type copying is
3877 impossible as we might have mutual forward references between
3878 two files and the copied type would not get filled in when
3879 we later parse its definition. */
3880 *tpp = parse_type (xref_fd,
3881 debug_info->external_aux + fh->iauxBase,
3885 debug_info->ss + fh->issBase + sh.iss);
3889 /* Cross reference to a struct/union/enum which is defined
3890 in another file in the same compilation unit but that file
3891 has not been parsed yet.
3892 Initialize the type only, it will be filled in when
3893 it's definition is parsed. */
3894 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
3896 add_pending (fh, esh, *tpp);
3899 /* We used one auxent normally, two if we got a "next one" rf. */
3904 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3905 keeping the symtab sorted */
3907 static struct symbol *
3908 mylookup_symbol (name, block, namespace, class)
3910 register struct block *block;
3911 namespace_enum namespace;
3912 enum address_class class;
3914 register int bot, top, inc;
3915 register struct symbol *sym;
3918 top = BLOCK_NSYMS (block);
3922 sym = BLOCK_SYM (block, bot);
3923 if (SYMBOL_NAME (sym)[0] == inc
3924 && SYMBOL_NAMESPACE (sym) == namespace
3925 && SYMBOL_CLASS (sym) == class
3926 && strcmp (SYMBOL_NAME (sym), name) == 0)
3930 block = BLOCK_SUPERBLOCK (block);
3932 return mylookup_symbol (name, block, namespace, class);
3937 /* Add a new symbol S to a block B.
3938 Infrequently, we will need to reallocate the block to make it bigger.
3939 We only detect this case when adding to top_stack->cur_block, since
3940 that's the only time we know how big the block is. FIXME. */
3947 int nsyms = BLOCK_NSYMS (b)++;
3948 struct block *origb;
3949 struct parse_stack *stackp;
3951 if (b == top_stack->cur_block &&
3952 nsyms >= top_stack->maxsyms)
3954 complain (&block_overflow_complaint, SYMBOL_NAME (s));
3955 /* In this case shrink_block is actually grow_block, since
3956 BLOCK_NSYMS(b) is larger than its current size. */
3958 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
3960 /* Now run through the stack replacing pointers to the
3961 original block. shrink_block has already done this
3962 for the blockvector and BLOCK_FUNCTION. */
3963 for (stackp = top_stack; stackp; stackp = stackp->next)
3965 if (stackp->cur_block == origb)
3967 stackp->cur_block = b;
3968 stackp->maxsyms = BLOCK_NSYMS (b);
3972 BLOCK_SYM (b, nsyms) = s;
3975 /* Add a new block B to a symtab S */
3982 struct blockvector *bv = BLOCKVECTOR (s);
3984 bv = (struct blockvector *) xrealloc ((PTR) bv,
3985 (sizeof (struct blockvector)
3986 + BLOCKVECTOR_NBLOCKS (bv)
3987 * sizeof (bv->block)));
3988 if (bv != BLOCKVECTOR (s))
3989 BLOCKVECTOR (s) = bv;
3991 BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
3994 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3995 MIPS' linenumber encoding might need more than one byte
3996 to describe it, LAST is used to detect these continuation lines.
3998 Combining lines with the same line number seems like a bad idea.
3999 E.g: There could be a line number entry with the same line number after the
4000 prologue and GDB should not ignore it (this is a better way to find
4001 a prologue than mips_skip_prologue).
4002 But due to the compressed line table format there are line number entries
4003 for the same line which are needed to bridge the gap to the next
4004 line number entry. These entries have a bogus address info with them
4005 and we are unable to tell them from intended duplicate line number
4007 This is another reason why -ggdb debugging format is preferable. */
4010 add_line (lt, lineno, adr, last)
4011 struct linetable *lt;
4016 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4017 Change them to something sensible. */
4021 last = -2; /* make sure we record first line */
4023 if (last == lineno) /* skip continuation lines */
4026 lt->item[lt->nitems].line = lineno;
4027 lt->item[lt->nitems++].pc = adr << 2;
4031 /* Sorting and reordering procedures */
4033 /* Blocks with a smaller low bound should come first */
4036 compare_blocks (arg1, arg2)
4040 register int addr_diff;
4041 struct block **b1 = (struct block **) arg1;
4042 struct block **b2 = (struct block **) arg2;
4044 addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
4046 return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
4050 /* Sort the blocks of a symtab S.
4051 Reorder the blocks in the blockvector by code-address,
4052 as required by some MI search routines */
4058 struct blockvector *bv = BLOCKVECTOR (s);
4060 if (BLOCKVECTOR_NBLOCKS (bv) <= 2)
4063 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
4064 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
4065 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
4066 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
4070 * This is very unfortunate: normally all functions are compiled in
4071 * the order they are found, but if the file is compiled -O3 things
4072 * are very different. It would be nice to find a reliable test
4073 * to detect -O3 images in advance.
4075 if (BLOCKVECTOR_NBLOCKS (bv) > 3)
4076 qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
4077 BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
4078 sizeof (struct block *),
4082 register CORE_ADDR high = 0;
4083 register int i, j = BLOCKVECTOR_NBLOCKS (bv);
4085 for (i = FIRST_LOCAL_BLOCK; i < j; i++)
4086 if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
4087 high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
4088 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
4091 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
4092 BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
4094 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4095 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4096 BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4097 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4101 /* Constructor/restructor/destructor procedures */
4103 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4104 MAXSYMS and linenumbers MAXLINES we'll put in it */
4106 static struct symtab *
4107 new_symtab (name, maxsyms, maxlines, objfile)
4111 struct objfile *objfile;
4113 struct symtab *s = allocate_symtab (name, objfile);
4115 LINETABLE (s) = new_linetable (maxlines);
4117 /* All symtabs must have at least two blocks */
4118 BLOCKVECTOR (s) = new_bvect (2);
4119 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);
4120 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);
4121 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =
4122 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
4124 s->free_code = free_linetable;
4125 s->debugformat = obsavestring ("ECOFF", 5,
4126 &objfile->symbol_obstack);
4130 /* Allocate a new partial_symtab NAME */
4132 static struct partial_symtab *
4133 new_psymtab (name, objfile)
4135 struct objfile *objfile;
4137 struct partial_symtab *psymtab;
4139 psymtab = allocate_psymtab (name, objfile);
4140 psymtab->section_offsets = objfile->section_offsets;
4142 /* Keep a backpointer to the file's symbols */
4144 psymtab->read_symtab_private = ((char *)
4145 obstack_alloc (&objfile->psymbol_obstack,
4146 sizeof (struct symloc)));
4147 memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc));
4148 CUR_BFD (psymtab) = cur_bfd;
4149 DEBUG_SWAP (psymtab) = debug_swap;
4150 DEBUG_INFO (psymtab) = debug_info;
4151 PENDING_LIST (psymtab) = pending_list;
4153 /* The way to turn this into a symtab is to call... */
4154 psymtab->read_symtab = mdebug_psymtab_to_symtab;
4159 /* Allocate a linetable array of the given SIZE. Since the struct
4160 already includes one item, we subtract one when calculating the
4161 proper size to allocate. */
4163 static struct linetable *
4164 new_linetable (size)
4167 struct linetable *l;
4169 size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);
4170 l = (struct linetable *) xmalloc (size);
4175 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4176 I am not so sure about the 3.4 ones.
4178 Since the struct linetable already includes one item, we subtract one when
4179 calculating the proper size to allocate. */
4181 static struct linetable *
4182 shrink_linetable (lt)
4183 struct linetable *lt;
4186 return (struct linetable *) xrealloc ((PTR) lt,
4187 (sizeof (struct linetable)
4189 * sizeof (lt->item))));
4192 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4194 static struct blockvector *
4198 struct blockvector *bv;
4201 size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
4202 bv = (struct blockvector *) xzalloc (size);
4204 BLOCKVECTOR_NBLOCKS (bv) = nblocks;
4209 /* Allocate and zero a new block of MAXSYMS symbols */
4211 static struct block *
4215 int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
4217 return (struct block *) xzalloc (size);
4220 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4221 Shrink_block can also be used by add_symbol to grow a block. */
4223 static struct block *
4229 struct blockvector *bv = BLOCKVECTOR (s);
4232 /* Just reallocate it and fix references to the old one */
4234 new = (struct block *) xrealloc ((PTR) b,
4235 (sizeof (struct block)
4236 + ((BLOCK_NSYMS (b) - 1)
4237 * sizeof (struct symbol *))));
4239 /* Should chase pointers to old one. Fortunately, that`s just
4240 the block`s function and inferior blocks */
4241 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
4242 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4243 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
4244 if (BLOCKVECTOR_BLOCK (bv, i) == b)
4245 BLOCKVECTOR_BLOCK (bv, i) = new;
4246 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)
4247 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;
4251 /* Create a new symbol with printname NAME */
4253 static struct symbol *
4257 struct symbol *s = ((struct symbol *)
4258 obstack_alloc (¤t_objfile->symbol_obstack,
4259 sizeof (struct symbol)));
4261 memset ((PTR) s, 0, sizeof (*s));
4262 SYMBOL_NAME (s) = obsavestring (name, strlen (name),
4263 ¤t_objfile->symbol_obstack);
4264 SYMBOL_LANGUAGE (s) = psymtab_language;
4265 SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack);
4269 /* Create a new type with printname NAME */
4271 static struct type *
4277 t = alloc_type (current_objfile);
4278 TYPE_NAME (t) = name;
4279 TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default;
4283 /* Read ECOFF debugging information from a BFD section. This is
4284 called from elfread.c. It parses the section into a
4285 ecoff_debug_info struct, and then lets the rest of the file handle
4289 elfmdebug_build_psymtabs (objfile, swap, sec)
4290 struct objfile *objfile;
4291 const struct ecoff_debug_swap *swap;
4294 bfd *abfd = objfile->obfd;
4295 struct ecoff_debug_info *info;
4297 info = ((struct ecoff_debug_info *)
4298 obstack_alloc (&objfile->psymbol_obstack,
4299 sizeof (struct ecoff_debug_info)));
4301 if (!(*swap->read_debug_info) (abfd, sec, info))
4302 error ("Error reading ECOFF debugging information: %s",
4303 bfd_errmsg (bfd_get_error ()));
4305 mdebug_build_psymtabs (objfile, swap, info);
4309 /* Things used for calling functions in the inferior.
4310 These functions are exported to our companion
4311 mips-tdep.c file and are here because they play
4312 with the symbol-table explicitly. */
4314 /* Sigtramp: make sure we have all the necessary information
4315 about the signal trampoline code. Since the official code
4316 from MIPS does not do so, we make up that information ourselves.
4317 If they fix the library (unlikely) this code will neutralize itself. */
4319 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4320 here because it calls functions defined in this file, but perhaps
4321 this could be handled in a better way. Only compile it in when
4322 tm-mips.h is included. */
4331 struct block *b, *b0 = NULL;
4333 sigtramp_address = -1;
4335 /* We have to handle the following cases here:
4336 a) The Mips library has a sigtramp label within sigvec.
4337 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4338 s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
4341 b0 = SYMBOL_BLOCK_VALUE (s);
4342 s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
4346 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4347 s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
4350 /* But maybe this program uses its own version of sigvec */
4354 /* Did we or MIPSco fix the library ? */
4355 if (SYMBOL_CLASS (s) == LOC_BLOCK)
4357 sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
4358 sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
4362 sigtramp_address = SYMBOL_VALUE (s);
4363 sigtramp_end = sigtramp_address + 0x88; /* black magic */
4365 /* But what symtab does it live in ? */
4366 st = find_pc_symtab (SYMBOL_VALUE (s));
4369 * Ok, there goes the fix: turn it into a procedure, with all the
4370 * needed info. Note we make it a nested procedure of sigvec,
4371 * which is the way the (assembly) code is actually written.
4373 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
4374 SYMBOL_CLASS (s) = LOC_BLOCK;
4375 SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
4377 TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void;
4379 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4381 SYMBOL_BLOCK_VALUE (s) = b;
4382 BLOCK_START (b) = sigtramp_address;
4383 BLOCK_END (b) = sigtramp_end;
4384 BLOCK_FUNCTION (b) = s;
4385 BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
4389 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4391 struct mips_extra_func_info *e =
4392 ((struct mips_extra_func_info *)
4393 xzalloc (sizeof (struct mips_extra_func_info)));
4395 e->numargs = 0; /* the kernel thinks otherwise */
4396 e->pdr.frameoffset = 32;
4397 e->pdr.framereg = SP_REGNUM;
4398 /* Note that setting pcreg is no longer strictly necessary as
4399 mips_frame_saved_pc is now aware of signal handler frames. */
4400 e->pdr.pcreg = PC_REGNUM;
4401 e->pdr.regmask = -2;
4402 /* Offset to saved r31, in the sigtramp case the saved registers
4403 are above the frame in the sigcontext.
4404 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4405 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4406 and 32 * 4 bytes for the floating point registers. */
4407 e->pdr.regoffset = 4 + 12 + 31 * 4;
4408 e->pdr.fregmask = -1;
4409 /* Offset to saved f30 (first saved *double* register). */
4410 e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4;
4411 e->pdr.isym = (long) s;
4412 e->pdr.adr = sigtramp_address;
4414 current_objfile = st->objfile; /* Keep new_symbol happy */
4415 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
4416 SYMBOL_VALUE (s) = (long) e;
4417 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
4418 SYMBOL_CLASS (s) = LOC_CONST;
4419 SYMBOL_TYPE (s) = mdebug_type_void;
4420 current_objfile = NULL;
4423 BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s;
4426 #endif /* TM_MIPS_H */
4429 _initialize_mdebugread ()
4432 init_type (TYPE_CODE_VOID, 1,
4434 "void", (struct objfile *) NULL);
4436 init_type (TYPE_CODE_INT, 1,
4438 "char", (struct objfile *) NULL);
4439 mdebug_type_unsigned_char =
4440 init_type (TYPE_CODE_INT, 1,
4442 "unsigned char", (struct objfile *) NULL);
4444 init_type (TYPE_CODE_INT, 2,
4446 "short", (struct objfile *) NULL);
4447 mdebug_type_unsigned_short =
4448 init_type (TYPE_CODE_INT, 2,
4450 "unsigned short", (struct objfile *) NULL);
4451 mdebug_type_int_32 =
4452 init_type (TYPE_CODE_INT, 4,
4454 "int", (struct objfile *) NULL);
4455 mdebug_type_unsigned_int_32 =
4456 init_type (TYPE_CODE_INT, 4,
4458 "unsigned int", (struct objfile *) NULL);
4459 mdebug_type_int_64 =
4460 init_type (TYPE_CODE_INT, 8,
4462 "int", (struct objfile *) NULL);
4463 mdebug_type_unsigned_int_64 =
4464 init_type (TYPE_CODE_INT, 8,
4466 "unsigned int", (struct objfile *) NULL);
4467 mdebug_type_long_32 =
4468 init_type (TYPE_CODE_INT, 4,
4470 "long", (struct objfile *) NULL);
4471 mdebug_type_unsigned_long_32 =
4472 init_type (TYPE_CODE_INT, 4,
4474 "unsigned long", (struct objfile *) NULL);
4475 mdebug_type_long_64 =
4476 init_type (TYPE_CODE_INT, 8,
4478 "long", (struct objfile *) NULL);
4479 mdebug_type_unsigned_long_64 =
4480 init_type (TYPE_CODE_INT, 8,
4482 "unsigned long", (struct objfile *) NULL);
4483 mdebug_type_long_long_64 =
4484 init_type (TYPE_CODE_INT, 8,
4486 "long long", (struct objfile *) NULL);
4487 mdebug_type_unsigned_long_long_64 =
4488 init_type (TYPE_CODE_INT, 8,
4490 "unsigned long long", (struct objfile *) NULL);
4491 mdebug_type_adr_32 =
4492 init_type (TYPE_CODE_PTR, 4,
4494 "adr_32", (struct objfile *) NULL);
4495 TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void;
4496 mdebug_type_adr_64 =
4497 init_type (TYPE_CODE_PTR, 8,
4499 "adr_64", (struct objfile *) NULL);
4500 TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void;
4502 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4504 "float", (struct objfile *) NULL);
4505 mdebug_type_double =
4506 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4508 "double", (struct objfile *) NULL);
4509 mdebug_type_complex =
4510 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4512 "complex", (struct objfile *) NULL);
4513 TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float;
4514 mdebug_type_double_complex =
4515 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4517 "double complex", (struct objfile *) NULL);
4518 TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double;
4520 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4522 mdebug_type_string =
4523 init_type (TYPE_CODE_STRING,
4524 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4526 (struct objfile *) NULL);
4528 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4529 good? Would we be better off with TYPE_CODE_ERROR? Should
4530 TYPE_CODE_ERROR print things in hex if it knows the size? */
4531 mdebug_type_fixed_dec =
4532 init_type (TYPE_CODE_INT,
4533 TARGET_INT_BIT / TARGET_CHAR_BIT,
4535 (struct objfile *) NULL);
4537 mdebug_type_float_dec =
4538 init_type (TYPE_CODE_ERROR,
4539 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4540 0, "floating decimal",
4541 (struct objfile *) NULL);
4543 nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0,
4544 "<function, no debug info>", NULL);
4545 TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int;
4546 nodebug_var_symbol_type =
4547 init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0,
4548 "<variable, no debug info>", NULL);