1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001, 2002, 2003
4 Free Software Foundation, Inc.
5 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
6 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
26 /* This module provides the function mdebug_build_psymtabs. It reads
27 ECOFF debugging information into partial symbol tables. The
28 debugging information is read from two structures. A struct
29 ecoff_debug_swap includes the sizes of each ECOFF structure and
30 swapping routines; these are fixed for a particular target. A
31 struct ecoff_debug_info points to the debugging information for a
32 particular object file.
34 ECOFF symbol tables are mostly written in the byte order of the
35 target machine. However, one section of the table (the auxiliary
36 symbol information) is written in the host byte order. There is a
37 bit in the other symbol info which describes which host byte order
38 was used. ECOFF thereby takes the trophy from Intel `b.out' for
39 the most brain-dead adaptation of a file format to byte order.
41 This module can read all four of the known byte-order combinations,
42 on any type of host. */
50 #include "gdb_obstack.h"
52 #include "stabsread.h"
53 #include "complaints.h"
55 #include "gdb_assert.h"
58 /* These are needed if the tm.h file does not contain the necessary
59 mips specific definitions. */
61 #ifndef MIPS_EFI_SYMBOL_NAME
62 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
63 extern void ecoff_relocate_efi (struct symbol *, CORE_ADDR);
65 #include "coff/symconst.h"
66 typedef struct mips_extra_func_info
71 *mips_extra_func_info_t;
78 #include <sys/types.h>
82 #include "gdb_string.h"
86 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
88 #include "libaout.h" /* Private BFD a.out information. */
89 #include "aout/aout64.h"
90 #include "aout/stab_gnu.h" /* STABS information */
92 #include "expression.h"
93 #include "language.h" /* For local_hex_string() */
95 extern void _initialize_mdebugread (void);
97 /* Provide a way to test if we have both ECOFF and ELF symbol tables.
98 We use this define in order to know whether we should override a
99 symbol's ECOFF section with its ELF section. This is necessary in
100 case the symbol's ELF section could not be represented in ECOFF. */
101 #define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
102 && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
105 /* We put a pointer to this structure in the read_symtab_private field
110 /* Index of the FDR that this psymtab represents. */
112 /* The BFD that the psymtab was created from. */
114 const struct ecoff_debug_swap *debug_swap;
115 struct ecoff_debug_info *debug_info;
116 struct mdebug_pending **pending_list;
117 /* Pointer to external symbols for this file. */
119 /* Size of extern_tab. */
121 enum language pst_language;
124 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
125 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
126 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
127 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
128 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
129 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
131 #define SC_IS_TEXT(sc) ((sc) == scText \
132 || (sc) == scRConst \
135 #define SC_IS_DATA(sc) ((sc) == scData \
140 #define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
141 #define SC_IS_BSS(sc) ((sc) == scBss)
142 #define SC_IS_SBSS(sc) ((sc) == scSBss)
143 #define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
145 /* Various complaints about symbol reading that don't abort the process */
147 index_complaint (const char *arg1)
149 complaint (&symfile_complaints, "bad aux index at symbol %s", arg1);
153 unknown_ext_complaint (const char *arg1)
155 complaint (&symfile_complaints, "unknown external symbol %s", arg1);
159 basic_type_complaint (int arg1, const char *arg2)
161 complaint (&symfile_complaints, "cannot map ECOFF basic type 0x%x for %s",
166 bad_tag_guess_complaint (const char *arg1)
168 complaint (&symfile_complaints, "guessed tag type of %s incorrectly", arg1);
172 bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3)
174 complaint (&symfile_complaints, "bad rfd entry for %s: file %d, index %d",
179 unexpected_type_code_complaint (const char *arg1)
181 complaint (&symfile_complaints, "unexpected type code for %s", arg1);
184 /* Macros and extra defs */
186 /* Puns: hard to find whether -g was used and how */
188 #define MIN_GLEVEL GLEVEL_0
189 #define compare_glevel(a,b) \
190 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
191 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
193 /* Things that really are local to this module */
195 /* Remember what we deduced to be the source language of this psymtab. */
197 static enum language psymtab_language = language_unknown;
203 /* How to parse debugging information for CUR_BFD. */
205 static const struct ecoff_debug_swap *debug_swap;
207 /* Pointers to debugging information for CUR_BFD. */
209 static struct ecoff_debug_info *debug_info;
211 /* Pointer to current file decriptor record, and its index */
216 /* Index of current symbol */
220 /* Note how much "debuggable" this image is. We would like
221 to see at least one FDR with full symbols */
223 static int max_gdbinfo;
224 static int max_glevel;
226 /* When examining .o files, report on undefined symbols */
228 static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
230 /* Pseudo symbol to use when putting stabs into the symbol table. */
232 static char stabs_symbol[] = STABS_SYMBOL;
234 /* Types corresponding to mdebug format bt* basic types. */
236 static struct type *mdebug_type_void;
237 static struct type *mdebug_type_char;
238 static struct type *mdebug_type_short;
239 static struct type *mdebug_type_int_32;
240 #define mdebug_type_int mdebug_type_int_32
241 static struct type *mdebug_type_int_64;
242 static struct type *mdebug_type_long_32;
243 static struct type *mdebug_type_long_64;
244 static struct type *mdebug_type_long_long_64;
245 static struct type *mdebug_type_unsigned_char;
246 static struct type *mdebug_type_unsigned_short;
247 static struct type *mdebug_type_unsigned_int_32;
248 static struct type *mdebug_type_unsigned_int_64;
249 static struct type *mdebug_type_unsigned_long_32;
250 static struct type *mdebug_type_unsigned_long_64;
251 static struct type *mdebug_type_unsigned_long_long_64;
252 static struct type *mdebug_type_adr_32;
253 static struct type *mdebug_type_adr_64;
254 static struct type *mdebug_type_float;
255 static struct type *mdebug_type_double;
256 static struct type *mdebug_type_complex;
257 static struct type *mdebug_type_double_complex;
258 static struct type *mdebug_type_fixed_dec;
259 static struct type *mdebug_type_float_dec;
260 static struct type *mdebug_type_string;
262 /* Types for symbols from files compiled without debugging info. */
264 static struct type *nodebug_func_symbol_type;
265 static struct type *nodebug_var_symbol_type;
267 /* Nonzero if we have seen ecoff debugging info for a file. */
269 static int found_ecoff_debugging_info;
271 /* Forward declarations */
273 static int upgrade_type (int, struct type **, int, union aux_ext *,
276 static void parse_partial_symbols (struct objfile *);
278 static int has_opaque_xref (FDR *, SYMR *);
280 static int cross_ref (int, union aux_ext *, struct type **, enum type_code,
281 char **, int, char *);
283 static struct symbol *new_symbol (char *);
285 static struct type *new_type (char *);
287 static struct block *new_block (int);
289 static struct symtab *new_symtab (char *, int, int, struct objfile *);
291 static struct linetable *new_linetable (int);
293 static struct blockvector *new_bvect (int);
295 static struct type *parse_type (int, union aux_ext *, unsigned int, int *,
298 static struct symbol *mylookup_symbol (char *, struct block *, namespace_enum,
301 static struct block *shrink_block (struct block *, struct symtab *);
303 static void sort_blocks (struct symtab *);
305 static struct partial_symtab *new_psymtab (char *, struct objfile *);
307 static void psymtab_to_symtab_1 (struct partial_symtab *, char *);
309 static void add_block (struct block *, struct symtab *);
311 static void add_symbol (struct symbol *, struct block *);
313 static int add_line (struct linetable *, int, CORE_ADDR, int);
315 static struct linetable *shrink_linetable (struct linetable *);
317 static void handle_psymbol_enumerators (struct objfile *, FDR *, int,
320 static char *mdebug_next_symbol_text (struct objfile *);
322 /* Address bounds for the signal trampoline in inferior, if any */
324 CORE_ADDR sigtramp_address, sigtramp_end;
326 /* Allocate zeroed memory */
329 xzalloc (unsigned int size)
331 void *p = xmalloc (size);
337 /* Exported procedure: Builds a symtab from the PST partial one.
338 Restores the environment in effect when PST was created, delegates
339 most of the work to an ancillary procedure, and sorts
340 and reorders the symtab list at the end */
343 mdebug_psymtab_to_symtab (struct partial_symtab *pst)
351 printf_filtered ("Reading in symbols for %s...", pst->filename);
352 gdb_flush (gdb_stdout);
355 next_symbol_text_func = mdebug_next_symbol_text;
357 psymtab_to_symtab_1 (pst, pst->filename);
359 /* Match with global symbols. This only needs to be done once,
360 after all of the symtabs and dependencies have been read in. */
361 scan_file_globals (pst->objfile);
364 printf_filtered ("done.\n");
367 /* File-level interface functions */
369 /* Find a file descriptor given its index RF relative to a file CF */
372 get_rfd (int cf, int rf)
378 fdrs = debug_info->fdr;
380 /* Object files do not have the RFD table, all refs are absolute */
383 (*debug_swap->swap_rfd_in) (cur_bfd,
384 ((char *) debug_info->external_rfd
386 * debug_swap->external_rfd_size)),
391 /* Return a safer print NAME for a file descriptor */
397 return "<stripped file>";
400 return debug_info->ss + f->issBase + f->rss;
404 /* Read in and parse the symtab of the file OBJFILE. Symbols from
405 different sections are relocated via the SECTION_OFFSETS. */
408 mdebug_build_psymtabs (struct objfile *objfile,
409 const struct ecoff_debug_swap *swap,
410 struct ecoff_debug_info *info)
412 cur_bfd = objfile->obfd;
416 stabsread_new_init ();
417 buildsym_new_init ();
418 free_header_files ();
419 init_header_files ();
421 /* Make sure all the FDR information is swapped in. */
422 if (info->fdr == (FDR *) NULL)
428 info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack,
429 (info->symbolic_header.ifdMax
431 fdr_src = info->external_fdr;
433 + info->symbolic_header.ifdMax * swap->external_fdr_size);
435 for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)
436 (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr);
439 parse_partial_symbols (objfile);
442 /* Check to make sure file was compiled with -g. If not, warn the
443 user of this limitation. */
444 if (compare_glevel (max_glevel, GLEVEL_2) < 0)
446 if (max_gdbinfo == 0)
447 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
449 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
450 gdb_flush (gdb_stdout);
455 /* Local utilities */
457 /* Map of FDR indexes to partial symtabs */
461 struct partial_symtab *pst; /* the psymtab proper */
462 long n_globals; /* exported globals (external symbols) */
463 long globals_offset; /* cumulative */
467 /* Utility stack, used to nest procedures and blocks properly.
468 It is a doubly linked list, to avoid too many alloc/free.
469 Since we might need it quite a few times it is NOT deallocated
472 static struct parse_stack
474 struct parse_stack *next, *prev;
475 struct symtab *cur_st; /* Current symtab. */
476 struct block *cur_block; /* Block in it. */
478 /* What are we parsing. stFile, or stBlock are for files and
479 blocks. stProc or stStaticProc means we have seen the start of a
480 procedure, but not the start of the block within in. When we see
481 the start of that block, we change it to stNil, without pushing a
482 new block, i.e. stNil means both a procedure and a block. */
486 int maxsyms; /* Max symbols in this block. */
487 struct type *cur_type; /* Type we parse fields for. */
488 int cur_field; /* Field number in cur_type. */
489 CORE_ADDR procadr; /* Start addres of this procedure */
490 int numargs; /* Its argument count */
493 *top_stack; /* Top stack ptr */
496 /* Enter a new lexical context */
499 push_parse_stack (void)
501 struct parse_stack *new;
503 /* Reuse frames if possible */
504 if (top_stack && top_stack->prev)
505 new = top_stack->prev;
507 new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));
508 /* Initialize new frame with previous content */
511 register struct parse_stack *prev = new->prev;
514 top_stack->prev = new;
516 new->next = top_stack;
521 /* Exit a lexical context */
524 pop_parse_stack (void)
529 top_stack = top_stack->next;
533 /* Cross-references might be to things we haven't looked at
534 yet, e.g. type references. To avoid too many type
535 duplications we keep a quick fixup table, an array
536 of lists of references indexed by file descriptor */
538 struct mdebug_pending
540 struct mdebug_pending *next; /* link */
541 char *s; /* the unswapped symbol */
542 struct type *t; /* its partial type descriptor */
546 /* The pending information is kept for an entire object file, and used
547 to be in the sym_private field. I took it out when I split
548 mdebugread from mipsread, because this might not be the only type
549 of symbols read from an object file. Instead, we allocate the
550 pending information table when we create the partial symbols, and
551 we store a pointer to the single table in each psymtab. */
553 static struct mdebug_pending **pending_list;
555 /* Check whether we already saw symbol SH in file FH */
557 static struct mdebug_pending *
558 is_pending_symbol (FDR *fh, char *sh)
560 int f_idx = fh - debug_info->fdr;
561 register struct mdebug_pending *p;
563 /* Linear search is ok, list is typically no more than 10 deep */
564 for (p = pending_list[f_idx]; p; p = p->next)
570 /* Add a new symbol SH of type T */
573 add_pending (FDR *fh, char *sh, struct type *t)
575 int f_idx = fh - debug_info->fdr;
576 struct mdebug_pending *p = is_pending_symbol (fh, sh);
578 /* Make sure we do not make duplicates */
581 p = ((struct mdebug_pending *)
582 obstack_alloc (¤t_objfile->psymbol_obstack,
583 sizeof (struct mdebug_pending)));
586 p->next = pending_list[f_idx];
587 pending_list[f_idx] = p;
592 /* Parsing Routines proper. */
594 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
595 For blocks, procedures and types we open a new lexical context.
596 This is basically just a big switch on the symbol's type. Argument
597 AX is the base pointer of aux symbols for this file (fh->iauxBase).
598 EXT_SH points to the unswapped symbol, which is needed for struct,
599 union, etc., types; it is NULL for an EXTR. BIGEND says whether
600 aux symbols are big-endian or little-endian. Return count of
601 SYMR's handled (normally one). */
604 parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend,
605 struct section_offsets *section_offsets, struct objfile *objfile)
607 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
608 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
612 struct mdebug_pending *pend;
616 enum address_class class;
618 long svalue = sh->value;
621 if (ext_sh == (char *) NULL)
622 name = debug_info->ssext + sh->iss;
624 name = debug_info->ss + cur_fdr->issBase + sh->iss;
630 /* Do not relocate relative values.
631 The value of a stEnd symbol is the displacement from the
632 corresponding start symbol value.
633 The value of a stBlock symbol is the displacement from the
634 procedure address. */
635 if (sh->st != stEnd && sh->st != stBlock)
636 sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
643 sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile));
647 sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile));
656 case stGlobal: /* external symbol, goes into global block */
658 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
660 s = new_symbol (name);
661 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
664 case stStatic: /* static data, goes into current block. */
666 b = top_stack->cur_block;
667 s = new_symbol (name);
668 if (SC_IS_COMMON (sh->sc))
670 /* It is a FORTRAN common block. At least for SGI Fortran the
671 address is not in the symbol; we need to fix it later in
672 scan_file_globals. */
673 int bucket = hashname (SYMBOL_NAME (s));
674 SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
675 global_sym_chain[bucket] = s;
678 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
681 case stLocal: /* local variable, goes into current block */
682 if (sh->sc == scRegister)
684 class = LOC_REGISTER;
685 svalue = ECOFF_REG_TO_REGNUM (svalue);
689 b = top_stack->cur_block;
690 s = new_symbol (name);
691 SYMBOL_VALUE (s) = svalue;
693 data: /* Common code for symbols describing data */
694 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
695 SYMBOL_CLASS (s) = class;
698 /* Type could be missing if file is compiled without debugging info. */
699 if (SC_IS_UNDEF (sh->sc)
700 || sh->sc == scNil || sh->index == indexNil)
701 SYMBOL_TYPE (s) = nodebug_var_symbol_type;
703 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
704 /* Value of a data symbol is its memory address */
707 case stParam: /* arg to procedure, goes into current block */
709 found_ecoff_debugging_info = 1;
710 top_stack->numargs++;
712 /* Special GNU C++ name. */
713 if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0)
714 name = "this"; /* FIXME, not alloc'd in obstack */
715 s = new_symbol (name);
717 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
721 /* Pass by value in register. */
722 SYMBOL_CLASS (s) = LOC_REGPARM;
723 svalue = ECOFF_REG_TO_REGNUM (svalue);
726 /* Pass by reference on stack. */
727 SYMBOL_CLASS (s) = LOC_REF_ARG;
730 /* Pass by reference in register. */
731 SYMBOL_CLASS (s) = LOC_REGPARM_ADDR;
732 svalue = ECOFF_REG_TO_REGNUM (svalue);
735 /* Pass by value on stack. */
736 SYMBOL_CLASS (s) = LOC_ARG;
739 SYMBOL_VALUE (s) = svalue;
740 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
741 add_symbol (s, top_stack->cur_block);
744 case stLabel: /* label, goes into current block */
745 s = new_symbol (name);
746 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */
747 SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */
748 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
749 SYMBOL_TYPE (s) = mdebug_type_int;
750 add_symbol (s, top_stack->cur_block);
753 case stProc: /* Procedure, usually goes into global block */
754 case stStaticProc: /* Static procedure, goes into current block */
755 /* For stProc symbol records, we need to check the storage class
756 as well, as only (stProc, scText) entries represent "real"
757 procedures - See the Compaq document titled "Object File /
758 Symbol Table Format Specification" for more information.
759 If the storage class is not scText, we discard the whole block
760 of symbol records for this stProc. */
761 if (sh->st == stProc && sh->sc != scText)
763 char *ext_tsym = ext_sh;
764 int keep_counting = 1;
767 while (keep_counting)
769 ext_tsym += external_sym_size;
770 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
780 complaint (&symfile_complaints,
781 "unknown symbol type 0x%x", sh->st);
787 s = new_symbol (name);
788 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
789 SYMBOL_CLASS (s) = LOC_BLOCK;
790 /* Type of the return value */
791 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
795 t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
796 if (STREQ (name, "malloc") && TYPE_CODE (t) == TYPE_CODE_VOID)
798 /* I don't know why, but, at least under Alpha GNU/Linux,
799 when linking against a malloc without debugging
800 symbols, its read as a function returning void---this
801 is bad because it means we cannot call functions with
802 string arguments interactively; i.e., "call
803 printf("howdy\n")" would fail with the error message
804 "program has no memory available". To avoid this, we
805 patch up the type and make it void*
806 instead. (davidm@azstarnet.com)
808 t = make_pointer_type (t, NULL);
811 b = top_stack->cur_block;
812 if (sh->st == stProc)
814 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
815 /* The next test should normally be true, but provides a
816 hook for nested functions (which we don't want to make
818 if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
819 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
820 /* Irix 5 sometimes has duplicate names for the same
821 function. We want to add such names up at the global
822 level, not as a nested function. */
823 else if (sh->value == top_stack->procadr)
824 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
828 /* Make a type for the procedure itself */
829 SYMBOL_TYPE (s) = lookup_function_type (t);
831 /* All functions in C++ have prototypes. For C we don't have enough
832 information in the debug info. */
833 if (SYMBOL_LANGUAGE (s) == language_cplus)
834 TYPE_FLAGS (SYMBOL_TYPE (s)) |= TYPE_FLAG_PROTOTYPED;
836 /* Create and enter a new lexical context */
837 b = new_block (top_stack->maxsyms);
838 SYMBOL_BLOCK_VALUE (s) = b;
839 BLOCK_FUNCTION (b) = s;
840 BLOCK_START (b) = BLOCK_END (b) = sh->value;
841 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
842 add_block (b, top_stack->cur_st);
844 /* Not if we only have partial info */
845 if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
849 top_stack->cur_block = b;
850 top_stack->blocktype = sh->st;
851 top_stack->cur_type = SYMBOL_TYPE (s);
852 top_stack->cur_field = -1;
853 top_stack->procadr = sh->value;
854 top_stack->numargs = 0;
857 /* Beginning of code for structure, union, and enum definitions.
858 They all share a common set of local variables, defined here. */
860 enum type_code type_code;
866 case stStruct: /* Start a block defining a struct type */
867 type_code = TYPE_CODE_STRUCT;
868 goto structured_common;
870 case stUnion: /* Start a block defining a union type */
871 type_code = TYPE_CODE_UNION;
872 goto structured_common;
874 case stEnum: /* Start a block defining an enum type */
875 type_code = TYPE_CODE_ENUM;
876 goto structured_common;
878 case stBlock: /* Either a lexical block, or some type */
879 if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc))
880 goto case_stBlock_code; /* Lexical block */
882 type_code = TYPE_CODE_UNDEF; /* We have a type. */
884 /* Common code for handling struct, union, enum, and/or as-yet-
885 unknown-type blocks of info about structured data. `type_code'
886 has been set to the proper TYPE_CODE, if we know it. */
888 found_ecoff_debugging_info = 1;
890 top_stack->blocktype = stBlock;
892 /* First count the number of fields and the highest value. */
895 for (ext_tsym = ext_sh + external_sym_size;
897 ext_tsym += external_sym_size)
901 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
906 /* C++ encodes class types as structures where there the
907 methods are encoded as stProc. The scope of stProc
908 symbols also ends with stEnd, thus creating a risk of
909 taking the wrong stEnd symbol record as the end of
910 the current struct, which would cause GDB to undercount
911 the real number of fields in this struct. To make sure
912 we really reached the right stEnd symbol record, we
913 check the associated name, and match it against the
914 struct name. Since method names are mangled while
915 the class name is not, there is no risk of having a
916 method whose name is identical to the class name
917 (in particular constructor method names are different
918 from the class name). There is therefore no risk that
919 this check stops the count on the StEnd of a method. */
920 if (strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss,
926 if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
928 /* If the type of the member is Nil (or Void),
929 without qualifiers, assume the tag is an
931 Alpha cc -migrate enums are recognized by a zero
932 index and a zero symbol value.
933 DU 4.0 cc enums are recognized by a member type of
934 btEnum without qualifiers and a zero symbol value. */
935 if (tsym.index == indexNil
936 || (tsym.index == 0 && sh->value == 0))
937 type_code = TYPE_CODE_ENUM;
940 (*debug_swap->swap_tir_in) (bigend,
941 &ax[tsym.index].a_ti,
943 if ((tir.bt == btNil || tir.bt == btVoid
944 || (tir.bt == btEnum && sh->value == 0))
946 type_code = TYPE_CODE_ENUM;
950 if (tsym.value > max_value)
951 max_value = tsym.value;
960 /* This is a no-op; is it trying to tell us something
961 we should be checking? */
962 if (tsym.sc == scVariant); /*UNIMPLEMENTED */
966 /* This is something like a struct within a
967 struct. Skip over the fields of the inner
968 struct. The -1 is because the for loop will
969 increment ext_tsym. */
970 ext_tsym = ((char *) debug_info->external_sym
971 + ((cur_fdr->isymBase + tsym.index - 1)
972 * external_sym_size));
978 /* mips cc puts out a typedef for struct x if it is not yet
979 defined when it encounters
980 struct y { struct x *xp; };
985 /* Irix5 cc puts out a stIndirect for struct x if it is not
986 yet defined when it encounters
987 struct y { struct x *xp; };
992 complaint (&symfile_complaints,
993 "declaration block contains unhandled symbol type %d",
999 /* In an stBlock, there is no way to distinguish structs,
1000 unions, and enums at this point. This is a bug in the
1001 original design (that has been fixed with the recent
1002 addition of the stStruct, stUnion, and stEnum symbol
1003 types.) The way you can tell is if/when you see a variable
1004 or field of that type. In that case the variable's type
1005 (in the AUX table) says if the type is struct, union, or
1006 enum, and points back to the stBlock here. So you can
1007 patch the tag kind up later - but only if there actually is
1008 a variable or field of that type.
1010 So until we know for sure, we will guess at this point.
1012 If the first member has index==indexNil or a void type,
1013 assume we have an enumeration.
1014 Otherwise, if there is more than one member, and all
1015 the members have offset 0, assume we have a union.
1016 Otherwise, assume we have a struct.
1018 The heuristic could guess wrong in the case of of an
1019 enumeration with no members or a union with one (or zero)
1020 members, or when all except the last field of a struct have
1021 width zero. These are uncommon and/or illegal situations,
1022 and in any case guessing wrong probably doesn't matter
1025 But if we later do find out we were wrong, we fixup the tag
1026 kind. Members of an enumeration must be handled
1027 differently from struct/union fields, and that is harder to
1028 patch up, but luckily we shouldn't need to. (If there are
1029 any enumeration members, we can tell for sure it's an enum
1032 if (type_code == TYPE_CODE_UNDEF)
1034 if (nfields > 1 && max_value == 0)
1035 type_code = TYPE_CODE_UNION;
1037 type_code = TYPE_CODE_STRUCT;
1040 /* Create a new type or use the pending type. */
1041 pend = is_pending_symbol (cur_fdr, ext_sh);
1042 if (pend == (struct mdebug_pending *) NULL)
1044 t = new_type (NULL);
1045 add_pending (cur_fdr, ext_sh, t);
1050 /* Do not set the tag name if it is a compiler generated tag name
1051 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1052 Alpha cc puts out an sh->iss of zero for those. */
1053 if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
1054 TYPE_TAG_NAME (t) = NULL;
1056 TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack,
1059 TYPE_CODE (t) = type_code;
1060 TYPE_LENGTH (t) = sh->value;
1061 TYPE_NFIELDS (t) = nfields;
1062 TYPE_FIELDS (t) = f = ((struct field *)
1064 nfields * sizeof (struct field)));
1066 if (type_code == TYPE_CODE_ENUM)
1068 int unsigned_enum = 1;
1070 /* This is a non-empty enum. */
1072 /* DEC c89 has the number of enumerators in the sh.value field,
1073 not the type length, so we have to compensate for that
1074 incompatibility quirk.
1075 This might do the wrong thing for an enum with one or two
1076 enumerators and gcc -gcoff -fshort-enums, but these cases
1077 are hopefully rare enough.
1078 Alpha cc -migrate has a sh.value field of zero, we adjust
1080 if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)
1081 || TYPE_LENGTH (t) == 0)
1082 TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT;
1083 for (ext_tsym = ext_sh + external_sym_size;
1085 ext_tsym += external_sym_size)
1088 struct symbol *enum_sym;
1090 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
1092 if (tsym.st != stMember)
1095 FIELD_BITPOS (*f) = tsym.value;
1096 FIELD_TYPE (*f) = t;
1097 FIELD_NAME (*f) = debug_info->ss + cur_fdr->issBase + tsym.iss;
1098 FIELD_BITSIZE (*f) = 0;
1099 FIELD_STATIC_KIND (*f) = 0;
1101 enum_sym = ((struct symbol *)
1102 obstack_alloc (¤t_objfile->symbol_obstack,
1103 sizeof (struct symbol)));
1104 memset (enum_sym, 0, sizeof (struct symbol));
1105 SYMBOL_NAME (enum_sym) =
1106 obsavestring (f->name, strlen (f->name),
1107 ¤t_objfile->symbol_obstack);
1108 SYMBOL_CLASS (enum_sym) = LOC_CONST;
1109 SYMBOL_TYPE (enum_sym) = t;
1110 SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
1111 SYMBOL_VALUE (enum_sym) = tsym.value;
1112 if (SYMBOL_VALUE (enum_sym) < 0)
1114 add_symbol (enum_sym, top_stack->cur_block);
1116 /* Skip the stMembers that we've handled. */
1121 TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED;
1123 /* make this the current type */
1124 top_stack->cur_type = t;
1125 top_stack->cur_field = 0;
1127 /* Do not create a symbol for alpha cc unnamed structs. */
1131 /* gcc puts out an empty struct for an opaque struct definitions,
1132 do not create a symbol for it either. */
1133 if (TYPE_NFIELDS (t) == 0)
1135 TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
1139 s = new_symbol (name);
1140 SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
1141 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1142 SYMBOL_VALUE (s) = 0;
1143 SYMBOL_TYPE (s) = t;
1144 add_symbol (s, top_stack->cur_block);
1147 /* End of local variables shared by struct, union, enum, and
1148 block (as yet unknown struct/union/enum) processing. */
1152 found_ecoff_debugging_info = 1;
1153 /* beginnning of (code) block. Value of symbol
1154 is the displacement from procedure start */
1155 push_parse_stack ();
1157 /* Do not start a new block if this is the outermost block of a
1158 procedure. This allows the LOC_BLOCK symbol to point to the
1159 block with the local variables, so funcname::var works. */
1160 if (top_stack->blocktype == stProc
1161 || top_stack->blocktype == stStaticProc)
1163 top_stack->blocktype = stNil;
1167 top_stack->blocktype = stBlock;
1168 b = new_block (top_stack->maxsyms);
1169 BLOCK_START (b) = sh->value + top_stack->procadr;
1170 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1171 top_stack->cur_block = b;
1172 add_block (b, top_stack->cur_st);
1175 case stEnd: /* end (of anything) */
1176 if (sh->sc == scInfo || SC_IS_COMMON (sh->sc))
1178 /* Finished with type */
1179 top_stack->cur_type = 0;
1181 else if (sh->sc == scText &&
1182 (top_stack->blocktype == stProc ||
1183 top_stack->blocktype == stStaticProc))
1185 /* Finished with procedure */
1186 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
1187 struct mips_extra_func_info *e;
1189 struct type *ftype = top_stack->cur_type;
1192 BLOCK_END (top_stack->cur_block) += sh->value; /* size */
1194 /* Make up special symbol to contain procedure specific info */
1195 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
1196 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
1197 SYMBOL_CLASS (s) = LOC_CONST;
1198 SYMBOL_TYPE (s) = mdebug_type_void;
1199 e = ((struct mips_extra_func_info *)
1200 obstack_alloc (¤t_objfile->symbol_obstack,
1201 sizeof (struct mips_extra_func_info)));
1202 memset (e, 0, sizeof (struct mips_extra_func_info));
1203 SYMBOL_VALUE (s) = (long) e;
1204 e->numargs = top_stack->numargs;
1205 e->pdr.framereg = -1;
1206 add_symbol (s, top_stack->cur_block);
1208 /* Reallocate symbols, saving memory */
1209 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
1211 /* f77 emits proc-level with address bounds==[0,0],
1212 So look for such child blocks, and patch them. */
1213 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
1215 struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
1216 if (BLOCK_SUPERBLOCK (b_bad) == b
1217 && BLOCK_START (b_bad) == top_stack->procadr
1218 && BLOCK_END (b_bad) == top_stack->procadr)
1220 BLOCK_START (b_bad) = BLOCK_START (b);
1221 BLOCK_END (b_bad) = BLOCK_END (b);
1225 if (TYPE_NFIELDS (ftype) <= 0)
1227 /* No parameter type information is recorded with the function's
1228 type. Set that from the type of the parameter symbols. */
1229 int nparams = top_stack->numargs;
1235 TYPE_NFIELDS (ftype) = nparams;
1236 TYPE_FIELDS (ftype) = (struct field *)
1237 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
1239 for (i = iparams = 0; iparams < nparams; i++)
1241 sym = BLOCK_SYM (b, i);
1242 switch (SYMBOL_CLASS (sym))
1247 case LOC_REGPARM_ADDR:
1248 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
1249 TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0;
1259 else if (sh->sc == scText && top_stack->blocktype == stBlock)
1261 /* End of (code) block. The value of the symbol is the
1262 displacement from the procedure`s start address of the
1263 end of this block. */
1264 BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
1265 shrink_block (top_stack->cur_block, top_stack->cur_st);
1267 else if (sh->sc == scText && top_stack->blocktype == stNil)
1269 /* End of outermost block. Pop parse stack and ignore. The
1270 following stEnd of stProc will take care of the block. */
1273 else if (sh->sc == scText && top_stack->blocktype == stFile)
1275 /* End of file. Pop parse stack and ignore. Higher
1276 level code deals with this. */
1280 complaint (&symfile_complaints,
1281 "stEnd with storage class %d not handled", sh->sc);
1283 pop_parse_stack (); /* restore previous lexical context */
1286 case stMember: /* member of struct or union */
1287 f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
1288 FIELD_NAME (*f) = name;
1289 FIELD_BITPOS (*f) = sh->value;
1291 FIELD_TYPE (*f) = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name);
1292 FIELD_BITSIZE (*f) = bitsize;
1293 FIELD_STATIC_KIND (*f) = 0;
1296 case stIndirect: /* forward declaration on Irix5 */
1297 /* Forward declarations from Irix5 cc are handled by cross_ref,
1301 case stTypedef: /* type definition */
1302 found_ecoff_debugging_info = 1;
1304 /* Typedefs for forward declarations and opaque structs from alpha cc
1305 are handled by cross_ref, skip them. */
1309 /* Parse the type or use the pending type. */
1310 pend = is_pending_symbol (cur_fdr, ext_sh);
1311 if (pend == (struct mdebug_pending *) NULL)
1313 t = parse_type (cur_fd, ax, sh->index, (int *) NULL, bigend, name);
1314 add_pending (cur_fdr, ext_sh, t);
1319 /* mips cc puts out a typedef with the name of the struct for forward
1320 declarations. These should not go into the symbol table and
1321 TYPE_NAME should not be set for them.
1322 They can't be distinguished from an intentional typedef to
1323 the same name however:
1325 struct x { int ix; int jx; };
1329 struct xx {int ixx; int jxx; };
1330 generates a cross referencing stTypedef for x and xx.
1331 The user visible effect of this is that the type of a pointer
1332 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1333 The problem is fixed with alpha cc and Irix5 cc. */
1335 /* However if the typedef cross references to an opaque aggregate, it
1336 is safe to omit it from the symbol table. */
1338 if (has_opaque_xref (cur_fdr, sh))
1340 s = new_symbol (name);
1341 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1342 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1343 SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
1344 SYMBOL_TYPE (s) = t;
1345 add_symbol (s, top_stack->cur_block);
1347 /* Incomplete definitions of structs should not get a name. */
1348 if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
1349 && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
1350 || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
1351 && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
1353 if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
1354 || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
1356 /* If we are giving a name to a type such as "pointer to
1357 foo" or "function returning foo", we better not set
1358 the TYPE_NAME. If the program contains "typedef char
1359 *caddr_t;", we don't want all variables of type char
1360 * to print as caddr_t. This is not just a
1361 consequence of GDB's type management; CC and GCC (at
1362 least through version 2.4) both output variables of
1363 either type char * or caddr_t with the type
1364 refering to the stTypedef symbol for caddr_t. If a future
1365 compiler cleans this up it GDB is not ready for it
1366 yet, but if it becomes ready we somehow need to
1367 disable this check (without breaking the PCC/GCC2.4
1372 Fortunately, this check seems not to be necessary
1373 for anything except pointers or functions. */
1376 TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s);
1380 case stFile: /* file name */
1381 push_parse_stack ();
1382 top_stack->blocktype = sh->st;
1385 /* I`ve never seen these for C */
1387 break; /* register relocation */
1389 break; /* forwarding address */
1391 break; /* constant */
1393 complaint (&symfile_complaints, "unknown symbol type 0x%x", sh->st);
1400 /* Parse the type information provided in the raw AX entries for
1401 the symbol SH. Return the bitfield size in BS, in case.
1402 We must byte-swap the AX entries before we use them; BIGEND says whether
1403 they are big-endian or little-endian (from fh->fBigendian). */
1405 static struct type *
1406 parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs,
1407 int bigend, char *sym_name)
1409 /* Null entries in this map are treated specially */
1410 static struct type **map_bt[] =
1412 &mdebug_type_void, /* btNil */
1413 &mdebug_type_adr_32, /* btAdr */
1414 &mdebug_type_char, /* btChar */
1415 &mdebug_type_unsigned_char, /* btUChar */
1416 &mdebug_type_short, /* btShort */
1417 &mdebug_type_unsigned_short, /* btUShort */
1418 &mdebug_type_int_32, /* btInt */
1419 &mdebug_type_unsigned_int_32, /* btUInt */
1420 &mdebug_type_long_32, /* btLong */
1421 &mdebug_type_unsigned_long_32, /* btULong */
1422 &mdebug_type_float, /* btFloat */
1423 &mdebug_type_double, /* btDouble */
1430 &mdebug_type_complex, /* btComplex */
1431 &mdebug_type_double_complex, /* btDComplex */
1433 &mdebug_type_fixed_dec, /* btFixedDec */
1434 &mdebug_type_float_dec, /* btFloatDec */
1435 &mdebug_type_string, /* btString */
1438 &mdebug_type_void, /* btVoid */
1439 0, /* DEC C++: Pointer to member */
1440 0, /* DEC C++: Virtual function table */
1441 0, /* DEC C++: Class (Record) */
1442 &mdebug_type_long_64, /* btLong64 */
1443 &mdebug_type_unsigned_long_64, /* btULong64 */
1444 &mdebug_type_long_long_64, /* btLongLong64 */
1445 &mdebug_type_unsigned_long_long_64, /* btULongLong64 */
1446 &mdebug_type_adr_64, /* btAdr64 */
1447 &mdebug_type_int_64, /* btInt64 */
1448 &mdebug_type_unsigned_int_64, /* btUInt64 */
1452 struct type *tp = 0;
1453 enum type_code type_code = TYPE_CODE_UNDEF;
1455 /* Handle undefined types, they have indexNil. */
1456 if (aux_index == indexNil)
1457 return mdebug_type_int;
1459 /* Handle corrupt aux indices. */
1460 if (aux_index >= (debug_info->fdr + fd)->caux)
1462 index_complaint (sym_name);
1463 return mdebug_type_int;
1467 /* Use aux as a type information record, map its basic type. */
1468 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1469 if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt)))
1471 basic_type_complaint (t->bt, sym_name);
1472 return mdebug_type_int;
1476 tp = *map_bt[t->bt];
1481 /* Cannot use builtin types -- build our own */
1485 type_code = TYPE_CODE_STRUCT;
1488 type_code = TYPE_CODE_UNION;
1491 type_code = TYPE_CODE_ENUM;
1494 type_code = TYPE_CODE_RANGE;
1497 type_code = TYPE_CODE_SET;
1500 /* alpha cc -migrate uses this for typedefs. The true type will
1501 be obtained by crossreferencing below. */
1502 type_code = TYPE_CODE_ERROR;
1505 /* alpha cc uses this for typedefs. The true type will be
1506 obtained by crossreferencing below. */
1507 type_code = TYPE_CODE_ERROR;
1510 basic_type_complaint (t->bt, sym_name);
1511 return mdebug_type_int;
1515 /* Move on to next aux */
1520 int width = AUX_GET_WIDTH (bigend, ax);
1521 #if 0 /* OBSOLETE CFront */
1522 // OBSOLETE /* Inhibit core dumps with some cfront generated objects that
1523 // OBSOLETE corrupt the TIR. */
1524 #endif /* OBSOLETE CFront */
1525 /* Inhibit core dumps if TIR is corrupted. */
1526 if (bs == (int *) NULL)
1528 /* Alpha cc -migrate encodes char and unsigned char types
1529 as short and unsigned short types with a field width of 8.
1530 Enum types also have a field width which we ignore for now. */
1531 if (t->bt == btShort && width == 8)
1532 tp = mdebug_type_char;
1533 else if (t->bt == btUShort && width == 8)
1534 tp = mdebug_type_unsigned_char;
1535 else if (t->bt == btEnum)
1538 complaint (&symfile_complaints, "can't handle TIR fBitfield for %s",
1546 /* A btIndirect entry cross references to an aux entry containing
1548 if (t->bt == btIndirect)
1555 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
1557 if (rn->rfd == 0xfff)
1559 rf = AUX_GET_ISYM (bigend, ax);
1567 complaint (&symfile_complaints,
1568 "unable to cross ref btIndirect for %s", sym_name);
1569 return mdebug_type_int;
1571 xref_fh = get_rfd (fd, rf);
1572 xref_fd = xref_fh - debug_info->fdr;
1573 tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
1574 rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
1577 /* All these types really point to some (common) MIPS type
1578 definition, and only the type-qualifiers fully identify
1579 them. We'll make the same effort at sharing. */
1580 if (t->bt == btStruct ||
1584 /* btSet (I think) implies that the name is a tag name, not a typedef
1585 name. This apparently is a MIPS extension for C sets. */
1590 /* Try to cross reference this type, build new type on failure. */
1591 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1592 if (tp == (struct type *) NULL)
1593 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1595 /* DEC c89 produces cross references to qualified aggregate types,
1596 dereference them. */
1597 while (TYPE_CODE (tp) == TYPE_CODE_PTR
1598 || TYPE_CODE (tp) == TYPE_CODE_ARRAY)
1599 tp = TYPE_TARGET_TYPE (tp);
1601 /* Make sure that TYPE_CODE(tp) has an expected type code.
1602 Any type may be returned from cross_ref if file indirect entries
1604 if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
1605 && TYPE_CODE (tp) != TYPE_CODE_UNION
1606 && TYPE_CODE (tp) != TYPE_CODE_ENUM)
1608 unexpected_type_code_complaint (sym_name);
1613 /* Usually, TYPE_CODE(tp) is already type_code. The main
1614 exception is if we guessed wrong re struct/union/enum.
1615 But for struct vs. union a wrong guess is harmless, so
1616 don't complain(). */
1617 if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
1618 && type_code != TYPE_CODE_ENUM)
1619 || (TYPE_CODE (tp) != TYPE_CODE_ENUM
1620 && type_code == TYPE_CODE_ENUM))
1622 bad_tag_guess_complaint (sym_name);
1625 if (TYPE_CODE (tp) != type_code)
1627 TYPE_CODE (tp) = type_code;
1630 /* Do not set the tag name if it is a compiler generated tag name
1631 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1632 if (name[0] == '.' || name[0] == '\0')
1633 TYPE_TAG_NAME (tp) = NULL;
1634 else if (TYPE_TAG_NAME (tp) == NULL
1635 || !STREQ (TYPE_TAG_NAME (tp), name))
1636 TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),
1637 ¤t_objfile->type_obstack);
1641 /* All these types really point to some (common) MIPS type
1642 definition, and only the type-qualifiers fully identify
1643 them. We'll make the same effort at sharing.
1644 FIXME: We are not doing any guessing on range types. */
1645 if (t->bt == btRange)
1649 /* Try to cross reference this type, build new type on failure. */
1650 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1651 if (tp == (struct type *) NULL)
1652 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1654 /* Make sure that TYPE_CODE(tp) has an expected type code.
1655 Any type may be returned from cross_ref if file indirect entries
1657 if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
1659 unexpected_type_code_complaint (sym_name);
1663 /* Usually, TYPE_CODE(tp) is already type_code. The main
1664 exception is if we guessed wrong re struct/union/enum. */
1665 if (TYPE_CODE (tp) != type_code)
1667 bad_tag_guess_complaint (sym_name);
1668 TYPE_CODE (tp) = type_code;
1670 if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))
1671 TYPE_NAME (tp) = obsavestring (name, strlen (name),
1672 ¤t_objfile->type_obstack);
1675 if (t->bt == btTypedef)
1679 /* Try to cross reference this type, it should succeed. */
1680 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1681 if (tp == (struct type *) NULL)
1683 complaint (&symfile_complaints,
1684 "unable to cross ref btTypedef for %s", sym_name);
1685 tp = mdebug_type_int;
1689 /* Deal with range types */
1690 if (t->bt == btRange)
1692 TYPE_NFIELDS (tp) = 2;
1693 TYPE_FIELDS (tp) = ((struct field *)
1694 TYPE_ALLOC (tp, 2 * sizeof (struct field)));
1695 TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),
1696 ¤t_objfile->type_obstack);
1697 TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);
1699 TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),
1700 ¤t_objfile->type_obstack);
1701 TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);
1705 /* Parse all the type qualifiers now. If there are more
1706 than 6 the game will continue in the next aux */
1710 #define PARSE_TQ(tq) \
1711 if (t->tq != tqNil) \
1712 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1724 /* mips cc 2.x and gcc never put out continued aux entries. */
1728 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1732 /* Complain for illegal continuations due to corrupt aux entries. */
1734 complaint (&symfile_complaints, "illegal TIR continued for %s", sym_name);
1739 /* Make up a complex type from a basic one. Type is passed by
1740 reference in TPP and side-effected as necessary. The type
1741 qualifier TQ says how to handle the aux symbols at AX for
1742 the symbol SX we are currently analyzing. BIGEND says whether
1743 aux symbols are big-endian or little-endian.
1744 Returns the number of aux symbols we parsed. */
1747 upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend,
1753 /* Used in array processing */
1764 t = lookup_pointer_type (*tpp);
1769 t = lookup_function_type (*tpp);
1776 /* Determine and record the domain type (type of index) */
1777 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
1783 rf = AUX_GET_ISYM (bigend, ax);
1786 fh = get_rfd (fd, rf);
1788 indx = parse_type (fh - debug_info->fdr,
1789 debug_info->external_aux + fh->iauxBase,
1790 id, (int *) NULL, bigend, sym_name);
1792 /* The bounds type should be an integer type, but might be anything
1793 else due to corrupt aux entries. */
1794 if (TYPE_CODE (indx) != TYPE_CODE_INT)
1796 complaint (&symfile_complaints,
1797 "illegal array index type for %s, assuming int", sym_name);
1798 indx = mdebug_type_int;
1801 /* Get the bounds, and create the array type. */
1803 lower = AUX_GET_DNLOW (bigend, ax);
1805 upper = AUX_GET_DNHIGH (bigend, ax);
1807 rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
1809 range = create_range_type ((struct type *) NULL, indx,
1812 t = create_array_type ((struct type *) NULL, *tpp, range);
1814 /* We used to fill in the supplied array element bitsize
1815 here if the TYPE_LENGTH of the target type was zero.
1816 This happens for a `pointer to an array of anonymous structs',
1817 but in this case the array element bitsize is also zero,
1818 so nothing is gained.
1819 And we used to check the TYPE_LENGTH of the target type against
1820 the supplied array element bitsize.
1821 gcc causes a mismatch for `pointer to array of object',
1822 since the sdb directives it uses do not have a way of
1823 specifying the bitsize, but it does no harm (the
1824 TYPE_LENGTH should be correct) and we should be able to
1825 ignore the erroneous bitsize from the auxiliary entry safely.
1826 dbx seems to ignore it too. */
1828 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1830 if (TYPE_LENGTH (*tpp) == 0)
1832 TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB;
1839 /* Volatile -- currently ignored */
1843 /* Const -- currently ignored */
1847 complaint (&symfile_complaints, "unknown type qualifier 0x%x", tq);
1853 /* Parse a procedure descriptor record PR. Note that the procedure is
1854 parsed _after_ the local symbols, now we just insert the extra
1855 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1856 already been placed in the procedure's main block. Note also that
1857 images that have been partially stripped (ld -x) have been deprived
1858 of local symbols, and we have to cope with them here. FIRST_OFF is
1859 the offset of the first procedure for this FDR; we adjust the
1860 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1861 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1862 in question, or NULL to use top_stack->cur_block. */
1864 static void parse_procedure (PDR *, struct symtab *, struct partial_symtab *);
1867 parse_procedure (PDR *pr, struct symtab *search_symtab,
1868 struct partial_symtab *pst)
1870 struct symbol *s, *i;
1872 struct mips_extra_func_info *e;
1875 /* Simple rule to find files linked "-x" */
1876 if (cur_fdr->rss == -1)
1880 /* Static procedure at address pr->adr. Sigh. */
1881 /* FIXME-32x64. assuming pr->adr fits in long. */
1882 complaint (&symfile_complaints,
1883 "can't handle PDR for static proc at 0x%lx",
1884 (unsigned long) pr->adr);
1892 (*debug_swap->swap_ext_in) (cur_bfd,
1893 ((char *) debug_info->external_ext
1895 * debug_swap->external_ext_size)),
1897 sh_name = debug_info->ssext + she.asym.iss;
1905 (*debug_swap->swap_sym_in) (cur_bfd,
1906 ((char *) debug_info->external_sym
1907 + ((cur_fdr->isymBase + pr->isym)
1908 * debug_swap->external_sym_size)),
1910 sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
1913 if (search_symtab != NULL)
1916 /* This loses both in the case mentioned (want a static, find a global),
1917 but also if we are looking up a non-mangled name which happens to
1918 match the name of a mangled function. */
1919 /* We have to save the cur_fdr across the call to lookup_symbol.
1920 If the pdr is for a static function and if a global function with
1921 the same name exists, lookup_symbol will eventually read in the symtab
1922 for the global function and clobber cur_fdr. */
1923 FDR *save_cur_fdr = cur_fdr;
1924 s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
1925 cur_fdr = save_cur_fdr;
1929 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),
1935 s = mylookup_symbol (sh_name, top_stack->cur_block,
1936 VAR_NAMESPACE, LOC_BLOCK);
1940 b = SYMBOL_BLOCK_VALUE (s);
1944 complaint (&symfile_complaints, "PDR for %s, but no symbol", sh_name);
1948 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1949 s = new_symbol (sh_name);
1950 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1951 SYMBOL_CLASS (s) = LOC_BLOCK;
1952 /* Donno its type, hope int is ok */
1953 SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int);
1954 add_symbol (s, top_stack->cur_block);
1955 /* Wont have symbols for this one */
1957 SYMBOL_BLOCK_VALUE (s) = b;
1958 BLOCK_FUNCTION (b) = s;
1959 BLOCK_START (b) = pr->adr;
1960 /* BOUND used to be the end of procedure's text, but the
1961 argument is no longer passed in. */
1962 BLOCK_END (b) = bound;
1963 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1964 add_block (b, top_stack->cur_st);
1968 i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);
1972 e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);
1974 e->pdr.isym = (long) s;
1976 /* GDB expects the absolute function start address for the
1977 procedure descriptor in e->pdr.adr.
1978 As the address in the procedure descriptor is usually relative,
1979 we would have to relocate e->pdr.adr with cur_fdr->adr and
1980 ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile)).
1981 Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
1982 in shared libraries on some systems, and on other systems
1983 e->pdr.adr is sometimes offset by a bogus value.
1984 To work around these problems, we replace e->pdr.adr with
1985 the start address of the function. */
1986 e->pdr.adr = BLOCK_START (b);
1988 /* Correct incorrect setjmp procedure descriptor from the library
1989 to make backtrace through setjmp work. */
1990 if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp"))
1992 complaint (&symfile_complaints, "fixing bad setjmp PDR from libc");
1993 e->pdr.pcreg = RA_REGNUM;
1994 e->pdr.regmask = 0x80000000;
1995 e->pdr.regoffset = -4;
1999 /* It would be reasonable that functions that have been compiled
2000 without debugging info have a btNil type for their return value,
2001 and functions that are void and are compiled with debugging info
2003 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
2004 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
2006 The glevel field in cur_fdr could be used to determine the presence
2007 of debugging info, but GCC doesn't always pass the -g switch settings
2008 to the assembler and GAS doesn't set the glevel field from the -g switch
2010 To work around these problems, the return value type of a TYPE_CODE_VOID
2011 function is adjusted accordingly if no debugging info was found in the
2012 compilation unit. */
2014 if (processing_gcc_compilation == 0
2015 && found_ecoff_debugging_info == 0
2016 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)
2017 SYMBOL_TYPE (s) = nodebug_func_symbol_type;
2020 /* Relocate the extra function info pointed to by the symbol table. */
2023 ecoff_relocate_efi (struct symbol *sym, CORE_ADDR delta)
2025 struct mips_extra_func_info *e;
2027 e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym);
2029 e->pdr.adr += delta;
2032 /* Parse the external symbol ES. Just call parse_symbol() after
2033 making sure we know where the aux are for it.
2034 BIGEND says whether aux entries are big-endian or little-endian.
2036 This routine clobbers top_stack->cur_block and ->cur_st. */
2038 static void parse_external (EXTR *, int, struct section_offsets *,
2042 parse_external (EXTR *es, int bigend, struct section_offsets *section_offsets,
2043 struct objfile *objfile)
2047 if (es->ifd != ifdNil)
2050 cur_fdr = debug_info->fdr + cur_fd;
2051 ax = debug_info->external_aux + cur_fdr->iauxBase;
2055 cur_fdr = debug_info->fdr;
2059 /* Reading .o files */
2060 if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil)
2063 switch (es->asym.st)
2066 /* These are generated for static symbols in .o files,
2087 /* FIXME: Turn this into a complaint? */
2089 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2090 what, debug_info->ssext + es->asym.iss,
2091 fdr_name (cur_fdr));
2095 switch (es->asym.st)
2099 /* There is no need to parse the external procedure symbols.
2100 If they are from objects compiled without -g, their index will
2101 be indexNil, and the symbol definition from the minimal symbol
2102 is preferrable (yielding a function returning int instead of int).
2103 If the index points to a local procedure symbol, the local
2104 symbol already provides the correct type.
2105 Note that the index of the external procedure symbol points
2106 to the local procedure symbol in the local symbol table, and
2107 _not_ to the auxiliary symbol info. */
2111 /* Global common symbols are resolved by the runtime loader,
2113 if (SC_IS_COMMON (es->asym.sc))
2116 /* Note that the case of a symbol with indexNil must be handled
2117 anyways by parse_symbol(). */
2118 parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets, objfile);
2125 /* Parse the line number info for file descriptor FH into
2126 GDB's linetable LT. MIPS' encoding requires a little bit
2127 of magic to get things out. Note also that MIPS' line
2128 numbers can go back and forth, apparently we can live
2129 with that and do not need to reorder our linetables */
2131 static void parse_lines (FDR *, PDR *, struct linetable *, int,
2132 struct partial_symtab *, CORE_ADDR);
2135 parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines,
2136 struct partial_symtab *pst, CORE_ADDR lowest_pdr_addr)
2138 unsigned char *base;
2140 int delta, count, lineno = 0;
2142 if (fh->cbLine == 0)
2145 /* Scan by procedure descriptors */
2147 for (j = 0; j < fh->cpd; j++, pr++)
2151 unsigned char *halt;
2153 /* No code for this one */
2154 if (pr->iline == ilineNil ||
2155 pr->lnLow == -1 || pr->lnHigh == -1)
2158 /* Determine start and end address of compressed line bytes for
2160 base = debug_info->line + fh->cbLineOffset;
2161 if (j != (fh->cpd - 1))
2162 halt = base + pr[1].cbLineOffset;
2164 halt = base + fh->cbLine;
2165 base += pr->cbLineOffset;
2167 adr = pst->textlow + pr->adr - lowest_pdr_addr;
2169 l = adr >> 2; /* in words */
2170 for (lineno = pr->lnLow; base < halt;)
2172 count = *base & 0x0f;
2173 delta = *base++ >> 4;
2178 delta = (base[0] << 8) | base[1];
2179 if (delta >= 0x8000)
2183 lineno += delta; /* first delta is 0 */
2185 /* Complain if the line table overflows. Could happen
2186 with corrupt binaries. */
2187 if (lt->nitems >= maxlines)
2189 complaint (&symfile_complaints,
2190 "guessed size of linetable for %s incorrectly",
2194 k = add_line (lt, lineno, l, k);
2201 function_outside_compilation_unit_complaint (const char *arg1)
2203 complaint (&symfile_complaints,
2204 "function `%s' appears to be defined outside of all compilation units",
2208 /* Master parsing procedure for first-pass reading of file symbols
2209 into a partial_symtab. */
2212 parse_partial_symbols (struct objfile *objfile)
2214 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
2215 const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
2216 const bfd_size_type external_ext_size = debug_swap->external_ext_size;
2217 void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in;
2218 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
2219 void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in;
2221 HDRR *hdr = &debug_info->symbolic_header;
2222 /* Running pointers */
2227 register EXTR *ext_in;
2230 struct partial_symtab *pst;
2231 int textlow_not_set = 1;
2232 int past_first_source_file = 0;
2234 /* List of current psymtab's include files */
2235 char **psymtab_include_list;
2236 int includes_allocated;
2239 struct pst_map *fdr_to_pst;
2240 /* Index within current psymtab dependency list */
2241 struct partial_symtab **dependency_list;
2242 int dependencies_used, dependencies_allocated;
2243 struct cleanup *old_chain;
2245 enum language prev_language;
2246 asection *text_sect;
2247 int relocatable = 0;
2249 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2250 the shared libraries are prelinked at a high memory address.
2251 We have to adjust the start address of the object file for this case,
2252 by setting it to the start address of the first procedure in the file.
2253 But we should do no adjustments if we are debugging a .o file, where
2254 the text section (and fh->adr) really starts at zero. */
2255 text_sect = bfd_get_section_by_name (cur_bfd, ".text");
2256 if (text_sect != NULL
2257 && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
2260 extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack,
2261 sizeof (EXTR) * hdr->iextMax);
2263 includes_allocated = 30;
2265 psymtab_include_list = (char **) alloca (includes_allocated *
2267 next_symbol_text_func = mdebug_next_symbol_text;
2269 dependencies_allocated = 30;
2270 dependencies_used = 0;
2272 (struct partial_symtab **) alloca (dependencies_allocated *
2273 sizeof (struct partial_symtab *));
2275 last_source_file = NULL;
2280 * Only parse the Local and External symbols, and the Relative FDR.
2281 * Fixup enough of the loader symtab to be able to use it.
2282 * Allocate space only for the file's portions we need to
2287 max_glevel = MIN_GLEVEL;
2289 /* Allocate the map FDR -> PST.
2290 Minor hack: -O3 images might claim some global data belongs
2291 to FDR -1. We`ll go along with that */
2292 fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);
2293 old_chain = make_cleanup (xfree, fdr_to_pst);
2296 struct partial_symtab *pst = new_psymtab ("", objfile);
2297 fdr_to_pst[-1].pst = pst;
2301 /* Allocate the global pending list. */
2303 ((struct mdebug_pending **)
2304 obstack_alloc (&objfile->psymbol_obstack,
2305 hdr->ifdMax * sizeof (struct mdebug_pending *)));
2306 memset (pending_list, 0,
2307 hdr->ifdMax * sizeof (struct mdebug_pending *));
2309 /* Pass 0 over external syms: swap them in. */
2310 ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));
2311 make_cleanup (xfree, ext_block);
2313 ext_out = (char *) debug_info->external_ext;
2314 ext_out_end = ext_out + hdr->iextMax * external_ext_size;
2316 for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
2317 (*swap_ext_in) (cur_bfd, ext_out, ext_in);
2319 /* Pass 1 over external syms: Presize and partition the list */
2321 ext_in_end = ext_in + hdr->iextMax;
2322 for (; ext_in < ext_in_end; ext_in++)
2324 /* See calls to complain below. */
2325 if (ext_in->ifd >= -1
2326 && ext_in->ifd < hdr->ifdMax
2327 && ext_in->asym.iss >= 0
2328 && ext_in->asym.iss < hdr->issExtMax)
2329 fdr_to_pst[ext_in->ifd].n_globals++;
2332 /* Pass 1.5 over files: partition out global symbol space */
2334 for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
2336 fdr_to_pst[f_idx].globals_offset = s_idx;
2337 s_idx += fdr_to_pst[f_idx].n_globals;
2338 fdr_to_pst[f_idx].n_globals = 0;
2343 For ECOFF in ELF, we skip the creation of the minimal symbols.
2344 The ECOFF symbols should be a subset of the Elf symbols, and the
2345 section information of the elf symbols will be more accurate.
2346 FIXME! What about Irix 5's native linker?
2348 By default, Elf sections which don't exist in ECOFF
2349 get put in ECOFF's absolute section by the gnu linker.
2350 Since absolute sections don't get relocated, we
2351 end up calculating an address different from that of
2352 the symbol's minimal symbol (created earlier from the
2355 To fix this, either :
2356 1) don't create the duplicate symbol
2357 (assumes ECOFF symtab is a subset of the ELF symtab;
2358 assumes no side-effects result from ignoring ECOFF symbol)
2359 2) create it, only if lookup for existing symbol in ELF's minimal
2362 assumes no side-effects result from ignoring ECOFF symbol)
2363 3) create it, but lookup ELF's minimal symbol and use it's section
2364 during relocation, then modify "uniqify" phase to merge and
2365 eliminate the duplicate symbol
2366 (highly inefficient)
2368 I've implemented #1 here...
2369 Skip the creation of the minimal symbols based on the ECOFF
2372 /* Pass 2 over external syms: fill in external symbols */
2374 ext_in_end = ext_in + hdr->iextMax;
2375 for (; ext_in < ext_in_end; ext_in++)
2377 enum minimal_symbol_type ms_type = mst_text;
2378 CORE_ADDR svalue = ext_in->asym.value;
2380 /* The Irix 5 native tools seem to sometimes generate bogus
2381 external symbols. */
2382 if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
2384 complaint (&symfile_complaints,
2385 "bad ifd for external symbol: %d (max %ld)", ext_in->ifd,
2389 if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
2391 complaint (&symfile_complaints,
2392 "bad iss for external symbol: %ld (max %ld)",
2393 ext_in->asym.iss, hdr->issExtMax);
2397 extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
2398 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
2401 if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil)
2405 /* Pass 3 over files, over local syms: fill in static symbols */
2406 name = debug_info->ssext + ext_in->asym.iss;
2408 /* Process ECOFF Symbol Types and Storage Classes */
2409 switch (ext_in->asym.st)
2412 /* Beginnning of Procedure */
2413 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2416 /* Load time only static procs */
2417 ms_type = mst_file_text;
2418 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2421 /* External symbol */
2422 if (SC_IS_COMMON (ext_in->asym.sc))
2424 /* The value of a common symbol is its size, not its address.
2428 else if (SC_IS_DATA (ext_in->asym.sc))
2431 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2433 else if (SC_IS_BSS (ext_in->asym.sc))
2436 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2438 else if (SC_IS_SBSS (ext_in->asym.sc))
2441 svalue += ANOFFSET (objfile->section_offsets,
2442 get_section_index (objfile, ".sbss"));
2450 /* On certain platforms, some extra label symbols can be
2451 generated by the linker. One possible usage for this kind
2452 of symbols is to represent the address of the begining of a
2453 given section. For instance, on Tru64 5.1, the address of
2454 the _ftext label is the start address of the .text section.
2456 The storage class of these symbols is usually directly
2457 related to the section to which the symbol refers. For
2458 instance, on Tru64 5.1, the storage class for the _fdata
2459 label is scData, refering to the .data section.
2461 It is actually possible that the section associated to the
2462 storage class of the label does not exist. On True64 5.1
2463 for instance, the libm.so shared library does not contain
2464 any .data section, although it contains a _fpdata label
2465 which storage class is scData... Since these symbols are
2466 usually useless for the debugger user anyway, we just
2467 discard these symbols.
2470 if (SC_IS_TEXT (ext_in->asym.sc))
2472 if (objfile->sect_index_text == -1)
2475 ms_type = mst_file_text;
2476 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2478 else if (SC_IS_DATA (ext_in->asym.sc))
2480 if (objfile->sect_index_data == -1)
2483 ms_type = mst_file_data;
2484 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2486 else if (SC_IS_BSS (ext_in->asym.sc))
2488 if (objfile->sect_index_bss == -1)
2491 ms_type = mst_file_bss;
2492 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2494 else if (SC_IS_SBSS (ext_in->asym.sc))
2496 const int sbss_sect_index = get_section_index (objfile, ".sbss");
2498 if (sbss_sect_index == -1)
2501 ms_type = mst_file_bss;
2502 svalue += ANOFFSET (objfile->section_offsets, sbss_sect_index);
2509 /* The alpha has the section start addresses in stLocal symbols
2510 whose name starts with a `.'. Skip those but complain for all
2511 other stLocal symbols.
2512 Irix6 puts the section start addresses in stNil symbols, skip
2518 ms_type = mst_unknown;
2519 unknown_ext_complaint (name);
2521 if (!ECOFF_IN_ELF (cur_bfd))
2522 prim_record_minimal_symbol (name, svalue, ms_type, objfile);
2525 /* Pass 3 over files, over local syms: fill in static symbols */
2526 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2528 struct partial_symtab *save_pst;
2532 cur_fdr = fh = debug_info->fdr + f_idx;
2536 fdr_to_pst[f_idx].pst = NULL;
2540 /* Determine the start address for this object file from the
2541 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2545 if (relocatable || textlow != 0)
2546 textlow += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2550 pst = start_psymtab_common (objfile, objfile->section_offsets,
2553 objfile->global_psymbols.next,
2554 objfile->static_psymbols.next);
2555 pst->read_symtab_private = ((char *)
2556 obstack_alloc (&objfile->psymbol_obstack,
2557 sizeof (struct symloc)));
2558 memset (pst->read_symtab_private, 0, sizeof (struct symloc));
2561 FDR_IDX (pst) = f_idx;
2562 CUR_BFD (pst) = cur_bfd;
2563 DEBUG_SWAP (pst) = debug_swap;
2564 DEBUG_INFO (pst) = debug_info;
2565 PENDING_LIST (pst) = pending_list;
2567 /* The way to turn this into a symtab is to call... */
2568 pst->read_symtab = mdebug_psymtab_to_symtab;
2570 /* Set up language for the pst.
2571 The language from the FDR is used if it is unambigious (e.g. cfront
2572 with native cc and g++ will set the language to C).
2573 Otherwise we have to deduce the language from the filename.
2574 Native ecoff has every header file in a separate FDR, so
2575 deduce_language_from_filename will return language_unknown for
2576 a header file, which is not what we want.
2577 But the FDRs for the header files are after the FDR for the source
2578 file, so we can assign the language of the source file to the
2579 following header files. Then we save the language in the private
2580 pst data so that we can reuse it when building symtabs. */
2581 prev_language = psymtab_language;
2585 case langCplusplusV2:
2586 psymtab_language = language_cplus;
2589 psymtab_language = deduce_language_from_filename (fdr_name (fh));
2592 if (psymtab_language == language_unknown)
2593 psymtab_language = prev_language;
2594 PST_PRIVATE (pst)->pst_language = psymtab_language;
2596 pst->texthigh = pst->textlow;
2598 /* For stabs-in-ecoff files, the second symbol must be @stab.
2599 This symbol is emitted by mips-tfile to signal that the
2600 current object file uses encapsulated stabs instead of mips
2601 ecoff for local symbols. (It is the second symbol because
2602 the first symbol is the stFile used to signal the start of a
2604 processing_gcc_compilation = 0;
2607 (*swap_sym_in) (cur_bfd,
2608 ((char *) debug_info->external_sym
2609 + (fh->isymBase + 1) * external_sym_size),
2611 if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol))
2612 processing_gcc_compilation = 2;
2615 if (processing_gcc_compilation != 0)
2617 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
2622 (*swap_sym_in) (cur_bfd,
2623 (((char *) debug_info->external_sym)
2624 + (fh->isymBase + cur_sdx) * external_sym_size),
2626 type_code = ECOFF_UNMARK_STAB (sh.index);
2627 if (!ECOFF_IS_STAB (&sh))
2629 if (sh.st == stProc || sh.st == stStaticProc)
2634 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2635 if (sh.st == stStaticProc)
2637 namestring = debug_info->ss + fh->issBase + sh.iss;
2638 prim_record_minimal_symbol_and_info (namestring,
2642 SECT_OFF_TEXT (objfile),
2646 procaddr = sh.value;
2648 isym = AUX_GET_ISYM (fh->fBigendian,
2649 (debug_info->external_aux
2652 (*swap_sym_in) (cur_bfd,
2653 ((char *) debug_info->external_sym
2654 + ((fh->isymBase + isym - 1)
2655 * external_sym_size)),
2659 CORE_ADDR high = procaddr + sh.value;
2661 /* Kludge for Irix 5.2 zero fh->adr. */
2663 && (pst->textlow == 0 || procaddr < pst->textlow))
2664 pst->textlow = procaddr;
2665 if (high > pst->texthigh)
2666 pst->texthigh = high;
2669 else if (sh.st == stStatic)
2684 namestring = debug_info->ss + fh->issBase + sh.iss;
2685 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2686 prim_record_minimal_symbol_and_info (namestring,
2690 SECT_OFF_DATA (objfile),
2696 /* FIXME! Shouldn't this use cases for bss,
2697 then have the default be abs? */
2698 namestring = debug_info->ss + fh->issBase + sh.iss;
2699 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2700 prim_record_minimal_symbol_and_info (namestring,
2704 SECT_OFF_BSS (objfile),
2712 /* Handle stabs continuation */
2714 char *stabstring = debug_info->ss + fh->issBase + sh.iss;
2715 int len = strlen (stabstring);
2716 while (stabstring[len - 1] == '\\')
2719 char *stabstring1 = stabstring;
2723 /* Ignore continuation char from 1st string */
2726 /* Read next stabstring */
2728 (*swap_sym_in) (cur_bfd,
2729 (((char *) debug_info->external_sym)
2730 + (fh->isymBase + cur_sdx)
2731 * external_sym_size),
2733 stabstring2 = debug_info->ss + fh->issBase + sh2.iss;
2734 len2 = strlen (stabstring2);
2736 /* Concatinate stabstring2 with stabstring1 */
2738 && stabstring != debug_info->ss + fh->issBase + sh.iss)
2739 stabstring = xrealloc (stabstring, len + len2 + 1);
2742 stabstring = xmalloc (len + len2 + 1);
2743 strcpy (stabstring, stabstring1);
2745 strcpy (stabstring + len, stabstring2);
2753 * Standard, external, non-debugger, symbols
2756 case N_TEXT | N_EXT:
2757 case N_NBTEXT | N_EXT:
2758 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2761 case N_DATA | N_EXT:
2762 case N_NBDATA | N_EXT:
2763 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2768 case N_NBBSS | N_EXT:
2769 case N_SETV | N_EXT: /* FIXME, is this in BSS? */
2770 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
2777 /* Standard, local, non-debugger, symbols */
2781 /* We need to be able to deal with both N_FN or N_TEXT,
2782 because we have no way of knowing whether the sys-supplied ld
2783 or GNU ld was used to make the executable. Sequents throw
2784 in another wrinkle -- they renumbered N_FN. */
2792 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2795 case N_UNDF | N_EXT:
2796 continue; /* Just undefined, not COMMON */
2801 /* Lots of symbol types we can just ignore. */
2808 /* Keep going . . . */
2811 * Special symbol types for GNU
2814 case N_INDR | N_EXT:
2816 case N_SETA | N_EXT:
2818 case N_SETT | N_EXT:
2820 case N_SETD | N_EXT:
2822 case N_SETB | N_EXT:
2833 static int prev_so_symnum = -10;
2834 static int first_so_symnum;
2836 int prev_textlow_not_set;
2838 valu = sh.value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
2840 prev_textlow_not_set = textlow_not_set;
2842 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
2843 /* A zero value is probably an indication for the SunPRO 3.0
2844 compiler. end_psymtab explicitly tests for zero, so
2845 don't relocate it. */
2849 textlow_not_set = 1;
2853 textlow_not_set = 0;
2855 textlow_not_set = 0;
2857 past_first_source_file = 1;
2859 if (prev_so_symnum != symnum - 1)
2860 { /* Here if prev stab wasn't N_SO */
2861 first_so_symnum = symnum;
2865 pst = (struct partial_symtab *) 0;
2867 dependencies_used = 0;
2871 prev_so_symnum = symnum;
2873 /* End the current partial symtab and start a new one */
2875 /* SET_NAMESTRING ();*/
2876 namestring = stabstring;
2878 /* Null name means end of .o file. Don't start a new one. */
2879 if (*namestring == '\000')
2882 /* Some compilers (including gcc) emit a pair of initial N_SOs.
2883 The first one is a directory name; the second the file name.
2884 If pst exists, is empty, and has a filename ending in '/',
2885 we assume the previous N_SO was a directory name. */
2887 p = strrchr (namestring, '/');
2888 if (p && *(p + 1) == '\000')
2889 continue; /* Simply ignore directory name SOs */
2891 /* Some other compilers (C++ ones in particular) emit useless
2892 SOs for non-existant .c files. We ignore all subsequent SOs that
2893 immediately follow the first. */
2905 enum language tmp_language;
2906 /* Mark down an include file in the current psymtab */
2908 /* SET_NAMESTRING ();*/
2909 namestring = stabstring;
2911 tmp_language = deduce_language_from_filename (namestring);
2913 /* Only change the psymtab's language if we've learned
2914 something useful (eg. tmp_language is not language_unknown).
2915 In addition, to match what start_subfile does, never change
2917 if (tmp_language != language_unknown
2918 && (tmp_language != language_c
2919 || psymtab_language != language_cplus))
2920 psymtab_language = tmp_language;
2922 /* In C++, one may expect the same filename to come round many
2923 times, when code is coming alternately from the main file
2924 and from inline functions in other files. So I check to see
2925 if this is a file we've seen before -- either the main
2926 source file, or a previously included file.
2928 This seems to be a lot of time to be spending on N_SOL, but
2929 things like "break c-exp.y:435" need to work (I
2930 suppose the psymtab_include_list could be hashed or put
2931 in a binary tree, if profiling shows this is a major hog). */
2932 if (pst && STREQ (namestring, pst->filename))
2936 for (i = 0; i < includes_used; i++)
2937 if (STREQ (namestring, psymtab_include_list[i]))
2946 psymtab_include_list[includes_used++] = namestring;
2947 if (includes_used >= includes_allocated)
2949 char **orig = psymtab_include_list;
2951 psymtab_include_list = (char **)
2952 alloca ((includes_allocated *= 2) *
2954 memcpy (psymtab_include_list, orig,
2955 includes_used * sizeof (char *));
2959 case N_LSYM: /* Typedef or automatic variable. */
2960 case N_STSYM: /* Data seg var -- static */
2961 case N_LCSYM: /* BSS " */
2962 case N_ROSYM: /* Read-only data seg var -- static. */
2963 case N_NBSTS: /* Gould nobase. */
2964 case N_NBLCS: /* symbols. */
2966 case N_GSYM: /* Global (extern) variable; can be
2967 data or bss (sigh FIXME). */
2969 /* Following may probably be ignored; I'll leave them here
2970 for now (until I do Pascal and Modula 2 extensions). */
2972 case N_PC: /* I may or may not need this; I
2974 case N_M2C: /* I suspect that I can ignore this here. */
2975 case N_SCOPE: /* Same. */
2977 /* SET_NAMESTRING ();*/
2978 namestring = stabstring;
2979 p = (char *) strchr (namestring, ':');
2981 continue; /* Not a debugging symbol. */
2985 /* Main processing section for debugging symbols which
2986 the initial read through the symbol tables needs to worry
2987 about. If we reach this point, the symbol which we are
2988 considering is definitely one we are interested in.
2989 p must also contain the (valid) index into the namestring
2990 which indicates the debugging type symbol. */
2995 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
2996 #ifdef STATIC_TRANSFORM_NAME
2997 namestring = STATIC_TRANSFORM_NAME (namestring);
2999 add_psymbol_to_list (namestring, p - namestring,
3000 VAR_NAMESPACE, LOC_STATIC,
3001 &objfile->static_psymbols,
3003 psymtab_language, objfile);
3006 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3007 /* The addresses in these entries are reported to be
3008 wrong. See the code that reads 'G's for symtabs. */
3009 add_psymbol_to_list (namestring, p - namestring,
3010 VAR_NAMESPACE, LOC_STATIC,
3011 &objfile->global_psymbols,
3013 psymtab_language, objfile);
3017 /* When a 'T' entry is defining an anonymous enum, it
3018 may have a name which is the empty string, or a
3019 single space. Since they're not really defining a
3020 symbol, those shouldn't go in the partial symbol
3021 table. We do pick up the elements of such enums at
3022 'check_enum:', below. */
3023 if (p >= namestring + 2
3024 || (p == namestring + 1
3025 && namestring[0] != ' '))
3027 add_psymbol_to_list (namestring, p - namestring,
3028 STRUCT_NAMESPACE, LOC_TYPEDEF,
3029 &objfile->static_psymbols,
3031 psymtab_language, objfile);
3034 /* Also a typedef with the same name. */
3035 add_psymbol_to_list (namestring, p - namestring,
3036 VAR_NAMESPACE, LOC_TYPEDEF,
3037 &objfile->static_psymbols,
3039 psymtab_language, objfile);
3042 #if 0 /* OBSOLETE CFront */
3043 // OBSOLETE /* The semantics of C++ state that "struct foo { ... }"
3044 // OBSOLETE also defines a typedef for "foo". Unfortuantely, cfront
3045 // OBSOLETE never makes the typedef when translating from C++ to C.
3046 // OBSOLETE We make the typedef here so that "ptype foo" works as
3047 // OBSOLETE expected for cfront translated code. */
3048 // OBSOLETE else if (psymtab_language == language_cplus)
3050 // OBSOLETE /* Also a typedef with the same name. */
3051 // OBSOLETE add_psymbol_to_list (namestring, p - namestring,
3052 // OBSOLETE VAR_NAMESPACE, LOC_TYPEDEF,
3053 // OBSOLETE &objfile->static_psymbols,
3054 // OBSOLETE sh.value, 0,
3055 // OBSOLETE psymtab_language, objfile);
3057 #endif /* OBSOLETE CFront */
3061 if (p != namestring) /* a name is there, not just :T... */
3063 add_psymbol_to_list (namestring, p - namestring,
3064 VAR_NAMESPACE, LOC_TYPEDEF,
3065 &objfile->static_psymbols,
3067 psymtab_language, objfile);
3070 /* If this is an enumerated type, we need to
3071 add all the enum constants to the partial symbol
3072 table. This does not cover enums without names, e.g.
3073 "enum {a, b} c;" in C, but fortunately those are
3074 rare. There is no way for GDB to find those from the
3075 enum type without spending too much time on it. Thus
3076 to solve this problem, the compiler needs to put out the
3077 enum in a nameless type. GCC2 does this. */
3079 /* We are looking for something of the form
3080 <name> ":" ("t" | "T") [<number> "="] "e"
3081 {<constant> ":" <value> ","} ";". */
3083 /* Skip over the colon and the 't' or 'T'. */
3085 /* This type may be given a number. Also, numbers can come
3086 in pairs like (0,26). Skip over it. */
3087 while ((*p >= '0' && *p <= '9')
3088 || *p == '(' || *p == ',' || *p == ')'
3094 /* The aix4 compiler emits extra crud before the members. */
3097 /* Skip over the type (?). */
3101 /* Skip over the colon. */
3105 /* We have found an enumerated type. */
3106 /* According to comments in read_enum_type
3107 a comma could end it instead of a semicolon.
3108 I don't know where that happens.
3110 while (*p && *p != ';' && *p != ',')
3114 /* Check for and handle cretinous dbx symbol name
3116 if (*p == '\\' || (*p == '?' && p[1] == '\0'))
3117 p = next_symbol_text (objfile);
3119 /* Point to the character after the name
3120 of the enum constant. */
3121 for (q = p; *q && *q != ':'; q++)
3123 /* Note that the value doesn't matter for
3124 enum constants in psymtabs, just in symtabs. */
3125 add_psymbol_to_list (p, q - p,
3126 VAR_NAMESPACE, LOC_CONST,
3127 &objfile->static_psymbols, 0,
3128 0, psymtab_language, objfile);
3129 /* Point past the name. */
3131 /* Skip over the value. */
3132 while (*p && *p != ',')
3134 /* Advance past the comma. */
3141 /* Constant, e.g. from "const" in Pascal. */
3142 add_psymbol_to_list (namestring, p - namestring,
3143 VAR_NAMESPACE, LOC_CONST,
3144 &objfile->static_psymbols, sh.value,
3145 0, psymtab_language, objfile);
3151 int name_len = p - namestring;
3152 char *name = xmalloc (name_len + 1);
3153 memcpy (name, namestring, name_len);
3154 name[name_len] = '\0';
3155 function_outside_compilation_unit_complaint (name);
3158 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3159 add_psymbol_to_list (namestring, p - namestring,
3160 VAR_NAMESPACE, LOC_BLOCK,
3161 &objfile->static_psymbols,
3163 psymtab_language, objfile);
3166 /* Global functions were ignored here, but now they
3167 are put into the global psymtab like one would expect.
3168 They're also in the minimal symbol table. */
3172 int name_len = p - namestring;
3173 char *name = xmalloc (name_len + 1);
3174 memcpy (name, namestring, name_len);
3175 name[name_len] = '\0';
3176 function_outside_compilation_unit_complaint (name);
3179 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3180 add_psymbol_to_list (namestring, p - namestring,
3181 VAR_NAMESPACE, LOC_BLOCK,
3182 &objfile->global_psymbols,
3184 psymtab_language, objfile);
3187 /* Two things show up here (hopefully); static symbols of
3188 local scope (static used inside braces) or extensions
3189 of structure symbols. We can ignore both. */
3203 case '#': /* for symbol identification (used in live ranges) */
3204 #if 0 /* OBSOLETE CFront */
3205 // OBSOLETE /* added to support cfront stabs strings */
3206 // OBSOLETE case 'Z': /* for definition continuations */
3207 // OBSOLETE case 'P': /* for prototypes */
3208 #endif /* OBSOLETE CFront */
3212 /* It is a C++ nested symbol. We don't need to record it
3213 (I don't think); if we try to look up foo::bar::baz,
3214 then symbols for the symtab containing foo should get
3215 read in, I think. */
3216 /* Someone says sun cc puts out symbols like
3217 /foo/baz/maclib::/usr/local/bin/maclib,
3218 which would get here with a symbol type of ':'. */
3222 /* Unexpected symbol descriptor. The second and subsequent stabs
3223 of a continued stab can show up here. The question is
3224 whether they ever can mimic a normal stab--it would be
3225 nice if not, since we certainly don't want to spend the
3226 time searching to the end of every string looking for
3229 complaint (&symfile_complaints,
3230 "unknown symbol descriptor `%c'", p[1]);
3232 /* Ignore it; perhaps it is an extension that we don't
3241 #ifdef SOFUN_ADDRESS_MAYBE_MISSING
3242 /* Solaris 2 end of module, finish current partial
3243 symbol table. END_PSYMTAB will set
3244 pst->texthigh to the proper value, which is
3245 necessary if a module compiled without
3246 debugging info follows this module. */
3249 pst = (struct partial_symtab *) 0;
3251 dependencies_used = 0;
3257 if (sh.value > save_pst->texthigh)
3258 save_pst->texthigh = sh.value;
3263 case N_SSYM: /* Claim: Structure or union element.
3264 Hopefully, I can ignore this. */
3265 case N_ENTRY: /* Alternate entry point; can ignore. */
3266 case N_MAIN: /* Can definitely ignore this. */
3267 case N_CATCH: /* These are GNU C++ extensions */
3268 case N_EHDECL: /* that can safely be ignored here. */
3278 case N_NSYMS: /* Ultrix 4.0: symbol count */
3279 case N_DEFD: /* GNU Modula-2 */
3280 case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
3282 case N_OBJ: /* useless types from Solaris */
3284 /* These symbols aren't interesting; don't worry about them */
3289 /* If we haven't found it yet, ignore it. It's probably some
3290 new type we don't know about yet. */
3291 complaint (&symfile_complaints, "unknown symbol type %s",
3292 local_hex_string (type_code)); /*CUR_SYMBOL_TYPE*/
3296 && stabstring != debug_info->ss + fh->issBase + sh.iss)
3299 /* end - Handle continuation */
3304 for (cur_sdx = 0; cur_sdx < fh->csym;)
3307 enum address_class class;
3309 (*swap_sym_in) (cur_bfd,
3310 ((char *) debug_info->external_sym
3311 + ((fh->isymBase + cur_sdx)
3312 * external_sym_size)),
3315 if (ECOFF_IS_STAB (&sh))
3321 /* Non absolute static symbols go into the minimal table. */
3322 if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil
3323 || (sh.index == indexNil
3324 && (sh.st != stStatic || sh.sc == scAbs)))
3326 /* FIXME, premature? */
3331 name = debug_info->ss + fh->issBase + sh.iss;
3337 /* The value of a stEnd symbol is the displacement from the
3338 corresponding start symbol value, do not relocate it. */
3340 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3347 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3351 sh.value += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
3362 prim_record_minimal_symbol_and_info (name, sh.value,
3363 mst_file_text, NULL,
3364 SECT_OFF_TEXT (objfile), NULL,
3370 /* Ignore all parameter symbol records. */
3371 if (sh.index >= hdr->iauxMax)
3373 /* Should not happen, but does when cross-compiling
3374 with the MIPS compiler. FIXME -- pull later. */
3375 index_complaint (name);
3376 new_sdx = cur_sdx + 1; /* Don't skip at all */
3379 new_sdx = AUX_GET_ISYM (fh->fBigendian,
3380 (debug_info->external_aux
3384 if (new_sdx <= cur_sdx)
3386 /* This should not happen either... FIXME. */
3387 complaint (&symfile_complaints,
3388 "bad proc end in aux found from symbol %s",
3390 new_sdx = cur_sdx + 1; /* Don't skip backward */
3393 /* For stProc symbol records, we need to check the
3394 storage class as well, as only (stProc, scText)
3395 entries represent "real" procedures - See the
3396 Compaq document titled "Object File / Symbol Table
3397 Format Specification" for more information. If the
3398 storage class is not scText, we discard the whole
3399 block of symbol records for this stProc. */
3400 if (sh.st == stProc && sh.sc != scText)
3403 /* Usually there is a local and a global stProc symbol
3404 for a function. This means that the function name
3405 has already been entered into the mimimal symbol table
3406 while processing the global symbols in pass 2 above.
3407 One notable exception is the PROGRAM name from
3408 f77 compiled executables, it is only put out as
3409 local stProc symbol, and a global MAIN__ stProc symbol
3410 points to it. It doesn't matter though, as gdb is
3411 still able to find the PROGRAM name via the partial
3412 symbol table, and the MAIN__ symbol via the minimal
3414 if (sh.st == stProc)
3415 add_psymbol_to_list (name, strlen (name),
3416 VAR_NAMESPACE, LOC_BLOCK,
3417 &objfile->global_psymbols,
3418 0, sh.value, psymtab_language, objfile);
3420 add_psymbol_to_list (name, strlen (name),
3421 VAR_NAMESPACE, LOC_BLOCK,
3422 &objfile->static_psymbols,
3423 0, sh.value, psymtab_language, objfile);
3425 procaddr = sh.value;
3428 (*swap_sym_in) (cur_bfd,
3429 ((char *) debug_info->external_sym
3430 + ((fh->isymBase + cur_sdx - 1)
3431 * external_sym_size)),
3436 /* Kludge for Irix 5.2 zero fh->adr. */
3438 && (pst->textlow == 0 || procaddr < pst->textlow))
3439 pst->textlow = procaddr;
3441 high = procaddr + sh.value;
3442 if (high > pst->texthigh)
3443 pst->texthigh = high;
3446 case stStatic: /* Variable */
3447 if (SC_IS_DATA (sh.sc))
3448 prim_record_minimal_symbol_and_info (name, sh.value,
3449 mst_file_data, NULL,
3450 SECT_OFF_DATA (objfile),
3454 prim_record_minimal_symbol_and_info (name, sh.value,
3456 SECT_OFF_BSS (objfile),
3462 case stIndirect: /* Irix5 forward declaration */
3463 /* Skip forward declarations from Irix5 cc */
3466 case stTypedef: /* Typedef */
3467 /* Skip typedefs for forward declarations and opaque
3468 structs from alpha and mips cc. */
3469 if (sh.iss == 0 || has_opaque_xref (fh, &sh))
3471 class = LOC_TYPEDEF;
3474 case stConstant: /* Constant decl */
3481 case stBlock: /* { }, str, un, enum */
3482 /* Do not create a partial symbol for cc unnamed aggregates
3483 and gcc empty aggregates. */
3484 if ((sh.sc == scInfo
3485 || SC_IS_COMMON (sh.sc))
3487 && sh.index != cur_sdx + 2)
3489 add_psymbol_to_list (name, strlen (name),
3490 STRUCT_NAMESPACE, LOC_TYPEDEF,
3491 &objfile->static_psymbols,
3493 psymtab_language, objfile);
3495 handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);
3497 /* Skip over the block */
3499 if (new_sdx <= cur_sdx)
3501 /* This happens with the Ultrix kernel. */
3502 complaint (&symfile_complaints,
3503 "bad aux index at block symbol %s", name);
3504 new_sdx = cur_sdx + 1; /* Don't skip backward */
3509 case stFile: /* File headers */
3510 case stLabel: /* Labels */
3511 case stEnd: /* Ends of files */
3514 case stLocal: /* Local variables */
3515 /* Normally these are skipped because we skip over
3516 all blocks we see. However, these can occur
3517 as visible symbols in a .h file that contains code. */
3521 /* Both complaints are valid: one gives symbol name,
3522 the other the offending symbol type. */
3523 complaint (&symfile_complaints, "unknown local symbol %s",
3525 complaint (&symfile_complaints, "with type %d", sh.st);
3529 /* Use this gdb symbol */
3530 add_psymbol_to_list (name, strlen (name),
3531 VAR_NAMESPACE, class,
3532 &objfile->static_psymbols,
3533 0, sh.value, psymtab_language, objfile);
3535 cur_sdx++; /* Go to next file symbol */
3538 /* Now do enter the external symbols. */
3539 ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
3540 cur_sdx = fdr_to_pst[f_idx].n_globals;
3541 PST_PRIVATE (save_pst)->extern_count = cur_sdx;
3542 PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
3543 for (; --cur_sdx >= 0; ext_ptr++)
3545 enum address_class class;
3550 if (ext_ptr->ifd != f_idx)
3551 internal_error (__FILE__, __LINE__, "failed internal consistency check");
3552 psh = &ext_ptr->asym;
3554 /* Do not add undefined symbols to the partial symbol table. */
3555 if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil)
3558 svalue = psh->value;
3563 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
3570 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
3574 svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
3581 /* These are generated for static symbols in .o files,
3586 /* External procedure symbols have been entered
3587 into the minimal symbol table in pass 2 above.
3588 Ignore them, as parse_external will ignore them too. */
3594 unknown_ext_complaint (debug_info->ssext + psh->iss);
3595 /* Fall through, pretend it's global. */
3597 /* Global common symbols are resolved by the runtime loader,
3599 if (SC_IS_COMMON (psh->sc))
3605 name = debug_info->ssext + psh->iss;
3606 add_psymbol_to_list (name, strlen (name),
3607 VAR_NAMESPACE, class,
3608 &objfile->global_psymbols,
3610 psymtab_language, objfile);
3614 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
3615 empty and put on the free list. */
3616 fdr_to_pst[f_idx].pst = end_psymtab (save_pst,
3617 psymtab_include_list, includes_used,
3618 -1, save_pst->texthigh,
3619 dependency_list, dependencies_used, textlow_not_set);
3621 dependencies_used = 0;
3623 if (objfile->ei.entry_point >= save_pst->textlow &&
3624 objfile->ei.entry_point < save_pst->texthigh)
3626 objfile->ei.entry_file_lowpc = save_pst->textlow;
3627 objfile->ei.entry_file_highpc = save_pst->texthigh;
3630 /* The objfile has its functions reordered if this partial symbol
3631 table overlaps any other partial symbol table.
3632 We cannot assume a reordered objfile if a partial symbol table
3633 is contained within another partial symbol table, as partial symbol
3634 tables for include files with executable code are contained
3635 within the partial symbol table for the including source file,
3636 and we do not want to flag the objfile reordered for these cases.
3638 This strategy works well for Irix-5.2 shared libraries, but we
3639 might have to use a more elaborate (and slower) algorithm for
3641 save_pst = fdr_to_pst[f_idx].pst;
3642 if (save_pst != NULL
3643 && save_pst->textlow != 0
3644 && !(objfile->flags & OBJF_REORDERED))
3646 ALL_OBJFILE_PSYMTABS (objfile, pst)
3649 && save_pst->textlow >= pst->textlow
3650 && save_pst->textlow < pst->texthigh
3651 && save_pst->texthigh > pst->texthigh)
3653 objfile->flags |= OBJF_REORDERED;
3660 /* Now scan the FDRs for dependencies */
3661 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
3663 fh = f_idx + debug_info->fdr;
3664 pst = fdr_to_pst[f_idx].pst;
3666 if (pst == (struct partial_symtab *) NULL)
3669 /* This should catch stabs-in-ecoff. */
3673 /* Skip the first file indirect entry as it is a self dependency
3674 for source files or a reverse .h -> .c dependency for header files. */
3675 pst->number_of_dependencies = 0;
3677 ((struct partial_symtab **)
3678 obstack_alloc (&objfile->psymbol_obstack,
3680 * sizeof (struct partial_symtab *))));
3681 for (s_idx = 1; s_idx < fh->crfd; s_idx++)
3685 (*swap_rfd_in) (cur_bfd,
3686 ((char *) debug_info->external_rfd
3687 + (fh->rfdBase + s_idx) * external_rfd_size),
3689 if (rh < 0 || rh >= hdr->ifdMax)
3691 complaint (&symfile_complaints, "bad file number %ld", rh);
3695 /* Skip self dependencies of header files. */
3699 /* Do not add to dependeny list if psymtab was empty. */
3700 if (fdr_to_pst[rh].pst == (struct partial_symtab *) NULL)
3702 pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;
3706 /* Remove the dummy psymtab created for -O3 images above, if it is
3707 still empty, to enable the detection of stripped executables. */
3708 if (objfile->psymtabs->next == NULL
3709 && objfile->psymtabs->number_of_dependencies == 0
3710 && objfile->psymtabs->n_global_syms == 0
3711 && objfile->psymtabs->n_static_syms == 0)
3712 objfile->psymtabs = NULL;
3713 do_cleanups (old_chain);
3716 /* If the current psymbol has an enumerated type, we need to add
3717 all the the enum constants to the partial symbol table. */
3720 handle_psymbol_enumerators (struct objfile *objfile, FDR *fh, int stype,
3723 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
3724 void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
3725 char *ext_sym = ((char *) debug_info->external_sym
3726 + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
3736 /* It is an enumerated type if the next symbol entry is a stMember
3737 and its auxiliary index is indexNil or its auxiliary entry
3738 is a plain btNil or btVoid.
3739 Alpha cc -migrate enums are recognized by a zero index and
3740 a zero symbol value.
3741 DU 4.0 cc enums are recognized by a member type of btEnum without
3742 qualifiers and a zero symbol value. */
3743 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3744 if (sh.st != stMember)
3747 if (sh.index == indexNil
3748 || (sh.index == 0 && svalue == 0))
3750 (*debug_swap->swap_tir_in) (fh->fBigendian,
3751 &(debug_info->external_aux
3752 + fh->iauxBase + sh.index)->a_ti,
3754 if ((tir.bt != btNil
3756 && (tir.bt != btEnum || svalue != 0))
3757 || tir.tq0 != tqNil)
3769 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3770 if (sh.st != stMember)
3772 name = debug_info->ss + cur_fdr->issBase + sh.iss;
3774 /* Note that the value doesn't matter for enum constants
3775 in psymtabs, just in symtabs. */
3776 add_psymbol_to_list (name, strlen (name),
3777 VAR_NAMESPACE, LOC_CONST,
3778 &objfile->static_psymbols, 0,
3779 (CORE_ADDR) 0, psymtab_language, objfile);
3780 ext_sym += external_sym_size;
3784 /* Get the next symbol. OBJFILE is unused. */
3787 mdebug_next_symbol_text (struct objfile *objfile)
3792 (*debug_swap->swap_sym_in) (cur_bfd,
3793 ((char *) debug_info->external_sym
3794 + ((cur_fdr->isymBase + cur_sdx)
3795 * debug_swap->external_sym_size)),
3797 return debug_info->ss + cur_fdr->issBase + sh.iss;
3800 /* Ancillary function to psymtab_to_symtab(). Does all the work
3801 for turning the partial symtab PST into a symtab, recurring
3802 first on all dependent psymtabs. The argument FILENAME is
3803 only passed so we can see in debug stack traces what file
3806 This function has a split personality, based on whether the
3807 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3808 The flow of control and even the memory allocation differs. FIXME. */
3811 psymtab_to_symtab_1 (struct partial_symtab *pst, char *filename)
3813 bfd_size_type external_sym_size;
3814 bfd_size_type external_pdr_size;
3815 void (*swap_sym_in) (bfd *, void *, SYMR *);
3816 void (*swap_pdr_in) (bfd *, void *, PDR *);
3818 struct symtab *st = NULL;
3820 struct linetable *lines;
3821 CORE_ADDR lowest_pdr_addr = 0;
3822 int last_symtab_ended = 0;
3828 /* Read in all partial symbtabs on which this one is dependent.
3829 NOTE that we do have circular dependencies, sigh. We solved
3830 that by setting pst->readin before this point. */
3832 for (i = 0; i < pst->number_of_dependencies; i++)
3833 if (!pst->dependencies[i]->readin)
3835 /* Inform about additional files to be read in. */
3838 fputs_filtered (" ", gdb_stdout);
3840 fputs_filtered ("and ", gdb_stdout);
3842 printf_filtered ("%s...",
3843 pst->dependencies[i]->filename);
3844 wrap_here (""); /* Flush output */
3845 gdb_flush (gdb_stdout);
3847 /* We only pass the filename for debug purposes */
3848 psymtab_to_symtab_1 (pst->dependencies[i],
3849 pst->dependencies[i]->filename);
3852 /* Do nothing if this is a dummy psymtab. */
3854 if (pst->n_global_syms == 0 && pst->n_static_syms == 0
3855 && pst->textlow == 0 && pst->texthigh == 0)
3858 /* Now read the symbols for this symtab */
3860 cur_bfd = CUR_BFD (pst);
3861 debug_swap = DEBUG_SWAP (pst);
3862 debug_info = DEBUG_INFO (pst);
3863 pending_list = PENDING_LIST (pst);
3864 external_sym_size = debug_swap->external_sym_size;
3865 external_pdr_size = debug_swap->external_pdr_size;
3866 swap_sym_in = debug_swap->swap_sym_in;
3867 swap_pdr_in = debug_swap->swap_pdr_in;
3868 current_objfile = pst->objfile;
3869 cur_fd = FDR_IDX (pst);
3870 fh = ((cur_fd == -1)
3872 : debug_info->fdr + cur_fd);
3875 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3876 processing_gcc_compilation = 0;
3877 if (fh != (FDR *) NULL && fh->csym >= 2)
3881 (*swap_sym_in) (cur_bfd,
3882 ((char *) debug_info->external_sym
3883 + (fh->isymBase + 1) * external_sym_size),
3885 if (STREQ (debug_info->ss + fh->issBase + sh.iss,
3888 /* We indicate that this is a GCC compilation so that certain
3889 features will be enabled in stabsread/dbxread. */
3890 processing_gcc_compilation = 2;
3894 if (processing_gcc_compilation != 0)
3897 /* This symbol table contains stabs-in-ecoff entries. */
3899 /* Parse local symbols first */
3901 if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
3903 current_objfile = NULL;
3906 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
3912 (*swap_sym_in) (cur_bfd,
3913 (((char *) debug_info->external_sym)
3914 + (fh->isymBase + cur_sdx) * external_sym_size),
3916 name = debug_info->ss + fh->issBase + sh.iss;
3918 /* XXX This is a hack. It will go away! */
3919 if (ECOFF_IS_STAB (&sh) || (name[0] == '#'))
3921 int type_code = ECOFF_UNMARK_STAB (sh.index);
3923 /* We should never get non N_STAB symbols here, but they
3924 should be harmless, so keep process_one_symbol from
3925 complaining about them. */
3926 if (type_code & N_STAB)
3928 /* If we found a trailing N_SO with no name, process
3929 it here instead of in process_one_symbol, so we
3930 can keep a handle to its symtab. The symtab
3931 would otherwise be ended twice, once in
3932 process_one_symbol, and once after this loop. */
3933 if (type_code == N_SO
3935 && previous_stab_code != (unsigned char) N_SO
3938 valu += ANOFFSET (pst->section_offsets,
3939 SECT_OFF_TEXT (pst->objfile));
3940 previous_stab_code = N_SO;
3941 st = end_symtab (valu, pst->objfile,
3942 SECT_OFF_TEXT (pst->objfile));
3944 last_symtab_ended = 1;
3948 last_symtab_ended = 0;
3949 process_one_symbol (type_code, 0, valu, name,
3950 pst->section_offsets, pst->objfile);
3953 /* Similarly a hack. */
3954 else if (name[0] == '#')
3956 process_one_symbol (N_SLINE, 0, valu, name,
3957 pst->section_offsets, pst->objfile);
3959 if (type_code == N_FUN)
3961 /* Make up special symbol to contain
3962 procedure specific info */
3963 struct mips_extra_func_info *e =
3964 ((struct mips_extra_func_info *)
3965 obstack_alloc (¤t_objfile->symbol_obstack,
3966 sizeof (struct mips_extra_func_info)));
3967 struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);
3969 memset (e, 0, sizeof (struct mips_extra_func_info));
3970 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
3971 SYMBOL_CLASS (s) = LOC_CONST;
3972 SYMBOL_TYPE (s) = mdebug_type_void;
3973 SYMBOL_VALUE (s) = (long) e;
3974 e->pdr.framereg = -1;
3975 add_symbol_to_list (s, &local_symbols);
3978 else if (sh.st == stLabel)
3980 if (sh.index == indexNil)
3982 /* This is what the gcc2_compiled and __gnu_compiled_*
3983 show up as. So don't complain. */
3988 /* Handle encoded stab line number. */
3989 valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT (pst->objfile));
3990 record_line (current_subfile, sh.index, valu);
3993 else if (sh.st == stProc || sh.st == stStaticProc
3994 || sh.st == stStatic || sh.st == stEnd)
3995 /* These are generated by gcc-2.x, do not complain */
3998 complaint (&symfile_complaints, "unknown stabs symbol %s", name);
4001 if (! last_symtab_ended)
4003 st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT (pst->objfile));
4007 /* Sort the symbol table now, we are done adding symbols to it.
4008 We must do this before parse_procedure calls lookup_symbol. */
4009 sort_symtab_syms (st);
4011 /* There used to be a call to sort_blocks here, but this should not
4012 be necessary for stabs symtabs. And as sort_blocks modifies the
4013 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
4014 it did the wrong thing if the first procedure in a file was
4015 generated via asm statements. */
4017 /* Fill in procedure info next. */
4021 struct cleanup *old_chain;
4027 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
4028 old_chain = make_cleanup (xfree, pr_block);
4030 pdr_ptr = ((char *) debug_info->external_pdr
4031 + fh->ipdFirst * external_pdr_size);
4032 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
4036 pdr_ptr += external_pdr_size, pdr_in++)
4038 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
4040 /* Determine lowest PDR address, the PDRs are not always
4042 if (pdr_in == pr_block)
4043 lowest_pdr_addr = pdr_in->adr;
4044 else if (pdr_in->adr < lowest_pdr_addr)
4045 lowest_pdr_addr = pdr_in->adr;
4049 pdr_in_end = pdr_in + fh->cpd;
4050 for (; pdr_in < pdr_in_end; pdr_in++)
4051 parse_procedure (pdr_in, st, pst);
4053 do_cleanups (old_chain);
4058 /* This symbol table contains ordinary ecoff entries. */
4064 /* How many symbols will we need */
4065 /* FIXME, this does not count enum values. */
4066 f_max = pst->n_global_syms + pst->n_static_syms;
4070 st = new_symtab ("unknown", f_max, 0, pst->objfile);
4074 f_max += fh->csym + fh->cpd;
4075 maxlines = 2 * fh->cline;
4076 st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);
4078 /* The proper language was already determined when building
4079 the psymtab, use it. */
4080 st->language = PST_PRIVATE (pst)->pst_language;
4083 psymtab_language = st->language;
4085 lines = LINETABLE (st);
4087 /* Get a new lexical context */
4089 push_parse_stack ();
4090 top_stack->cur_st = st;
4091 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),
4093 BLOCK_START (top_stack->cur_block) = pst->textlow;
4094 BLOCK_END (top_stack->cur_block) = 0;
4095 top_stack->blocktype = stFile;
4096 top_stack->maxsyms = 2 * f_max;
4097 top_stack->cur_type = 0;
4098 top_stack->procadr = 0;
4099 top_stack->numargs = 0;
4100 found_ecoff_debugging_info = 0;
4107 /* Parse local symbols first */
4108 sym_ptr = ((char *) debug_info->external_sym
4109 + fh->isymBase * external_sym_size);
4110 sym_end = sym_ptr + fh->csym * external_sym_size;
4111 while (sym_ptr < sym_end)
4116 (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
4117 c = parse_symbol (&sh,
4118 debug_info->external_aux + fh->iauxBase,
4119 sym_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
4120 sym_ptr += c * external_sym_size;
4123 /* Linenumbers. At the end, check if we can save memory.
4124 parse_lines has to look ahead an arbitrary number of PDR
4125 structures, so we swap them all first. */
4129 struct cleanup *old_chain;
4135 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
4137 old_chain = make_cleanup (xfree, pr_block);
4139 pdr_ptr = ((char *) debug_info->external_pdr
4140 + fh->ipdFirst * external_pdr_size);
4141 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
4145 pdr_ptr += external_pdr_size, pdr_in++)
4147 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
4149 /* Determine lowest PDR address, the PDRs are not always
4151 if (pdr_in == pr_block)
4152 lowest_pdr_addr = pdr_in->adr;
4153 else if (pdr_in->adr < lowest_pdr_addr)
4154 lowest_pdr_addr = pdr_in->adr;
4157 parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr);
4158 if (lines->nitems < fh->cline)
4159 lines = shrink_linetable (lines);
4161 /* Fill in procedure info next. */
4163 pdr_in_end = pdr_in + fh->cpd;
4164 for (; pdr_in < pdr_in_end; pdr_in++)
4165 parse_procedure (pdr_in, 0, pst);
4167 do_cleanups (old_chain);
4171 LINETABLE (st) = lines;
4173 /* .. and our share of externals.
4174 XXX use the global list to speed up things here. how?
4175 FIXME, Maybe quit once we have found the right number of ext's? */
4176 top_stack->cur_st = st;
4177 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
4179 top_stack->blocktype = stFile;
4181 = (debug_info->symbolic_header.isymMax
4182 + debug_info->symbolic_header.ipdMax
4183 + debug_info->symbolic_header.iextMax);
4185 ext_ptr = PST_PRIVATE (pst)->extern_tab;
4186 for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
4187 parse_external (ext_ptr, fh->fBigendian, pst->section_offsets, pst->objfile);
4189 /* If there are undefined symbols, tell the user.
4190 The alpha has an undefined symbol for every symbol that is
4191 from a shared library, so tell the user only if verbose is on. */
4192 if (info_verbose && n_undef_symbols)
4194 printf_filtered ("File %s contains %d unresolved references:",
4195 st->filename, n_undef_symbols);
4196 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
4197 n_undef_vars, n_undef_procs, n_undef_labels);
4198 n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
4205 /* Sort the symbol table now, we are done adding symbols to it. */
4206 sort_symtab_syms (st);
4211 /* Now link the psymtab and the symtab. */
4214 current_objfile = NULL;
4217 /* Ancillary parsing procedures. */
4219 /* Return 1 if the symbol pointed to by SH has a cross reference
4220 to an opaque aggregate type, else 0. */
4223 has_opaque_xref (FDR *fh, SYMR *sh)
4230 if (sh->index == indexNil)
4233 ax = debug_info->external_aux + fh->iauxBase + sh->index;
4234 (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
4235 if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
4239 (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
4240 if (rn->rfd == 0xfff)
4241 rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
4249 /* Lookup the type at relative index RN. Return it in TPP
4250 if found and in any event come up with its name PNAME.
4251 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
4252 Return value says how many aux symbols we ate. */
4255 cross_ref (int fd, union aux_ext *ax, struct type **tpp, enum type_code type_code, /* Use to alloc new type if none is found. */
4256 char **pname, int bigend, char *sym_name)
4265 struct mdebug_pending *pend;
4267 *tpp = (struct type *) NULL;
4269 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
4271 /* Escape index means 'the next one' */
4272 if (rn->rfd == 0xfff)
4275 rf = AUX_GET_ISYM (bigend, ax + 1);
4282 /* mips cc uses a rf of -1 for opaque struct definitions.
4283 Set TYPE_FLAG_STUB for these types so that check_typedef will
4284 resolve them if the struct gets defined in another compilation unit. */
4287 *pname = "<undefined>";
4288 *tpp = init_type (type_code, 0, TYPE_FLAG_STUB, (char *) NULL, current_objfile);
4292 /* mips cc uses an escaped rn->index of 0 for struct return types
4293 of procedures that were compiled without -g. These will always remain
4295 if (rn->rfd == 0xfff && rn->index == 0)
4297 *pname = "<undefined>";
4301 /* Find the relative file descriptor and the symbol in it. */
4302 fh = get_rfd (fd, rf);
4303 xref_fd = fh - debug_info->fdr;
4305 if (rn->index >= fh->csym)
4307 /* File indirect entry is corrupt. */
4308 *pname = "<illegal>";
4309 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4313 /* If we have processed this symbol then we left a forwarding
4314 pointer to the type in the pending list. If not, we`ll put
4315 it in a list of pending types, to be processed later when
4316 the file will be. In any event, we collect the name for the
4319 esh = ((char *) debug_info->external_sym
4320 + ((fh->isymBase + rn->index)
4321 * debug_swap->external_sym_size));
4322 (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
4324 /* Make sure that this type of cross reference can be handled. */
4325 if ((sh.sc != scInfo
4326 || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
4327 && sh.st != stStruct && sh.st != stUnion
4328 && sh.st != stEnum))
4329 && (sh.st != stBlock || !SC_IS_COMMON (sh.sc)))
4331 /* File indirect entry is corrupt. */
4332 *pname = "<illegal>";
4333 bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
4337 *pname = debug_info->ss + fh->issBase + sh.iss;
4339 pend = is_pending_symbol (fh, esh);
4344 /* We have not yet seen this type. */
4346 if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
4350 /* alpha cc puts out a stTypedef with a sh.iss of zero for
4352 a) forward declarations of structs/unions/enums which are not
4353 defined in this compilation unit.
4354 For these the type will be void. This is a bad design decision
4355 as cross referencing across compilation units is impossible
4356 due to the missing name.
4357 b) forward declarations of structs/unions/enums/typedefs which
4358 are defined later in this file or in another file in the same
4359 compilation unit. Irix5 cc uses a stIndirect symbol for this.
4360 Simply cross reference those again to get the true type.
4361 The forward references are not entered in the pending list and
4362 in the symbol table. */
4364 (*debug_swap->swap_tir_in) (bigend,
4365 &(debug_info->external_aux
4366 + fh->iauxBase + sh.index)->a_ti,
4368 if (tir.tq0 != tqNil)
4369 complaint (&symfile_complaints,
4370 "illegal tq0 in forward typedef for %s", sym_name);
4374 *tpp = init_type (type_code, 0, 0, (char *) NULL,
4376 *pname = "<undefined>";
4383 (debug_info->external_aux
4384 + fh->iauxBase + sh.index + 1),
4385 tpp, type_code, pname,
4386 fh->fBigendian, sym_name);
4390 /* Follow a forward typedef. This might recursively
4391 call cross_ref till we get a non typedef'ed type.
4392 FIXME: This is not correct behaviour, but gdb currently
4393 cannot handle typedefs without type copying. Type
4394 copying is impossible as we might have mutual forward
4395 references between two files and the copied type would not
4396 get filled in when we later parse its definition. */
4397 *tpp = parse_type (xref_fd,
4398 debug_info->external_aux + fh->iauxBase,
4402 debug_info->ss + fh->issBase + sh.iss);
4403 add_pending (fh, esh, *tpp);
4407 complaint (&symfile_complaints,
4408 "illegal bt %d in forward typedef for %s", tir.bt,
4410 *tpp = init_type (type_code, 0, 0, (char *) NULL,
4416 else if (sh.st == stTypedef)
4418 /* Parse the type for a normal typedef. This might recursively call
4419 cross_ref till we get a non typedef'ed type.
4420 FIXME: This is not correct behaviour, but gdb currently
4421 cannot handle typedefs without type copying. But type copying is
4422 impossible as we might have mutual forward references between
4423 two files and the copied type would not get filled in when
4424 we later parse its definition. */
4425 *tpp = parse_type (xref_fd,
4426 debug_info->external_aux + fh->iauxBase,
4430 debug_info->ss + fh->issBase + sh.iss);
4434 /* Cross reference to a struct/union/enum which is defined
4435 in another file in the same compilation unit but that file
4436 has not been parsed yet.
4437 Initialize the type only, it will be filled in when
4438 it's definition is parsed. */
4439 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
4441 add_pending (fh, esh, *tpp);
4444 /* We used one auxent normally, two if we got a "next one" rf. */
4449 /* Quick&dirty lookup procedure, to avoid the MI ones that require
4450 keeping the symtab sorted */
4452 static struct symbol *
4453 mylookup_symbol (char *name, register struct block *block,
4454 namespace_enum namespace, enum address_class class)
4460 ALL_BLOCK_SYMBOLS (block, i, sym)
4462 if (SYMBOL_NAME (sym)[0] == inc
4463 && SYMBOL_NAMESPACE (sym) == namespace
4464 && SYMBOL_CLASS (sym) == class
4465 && strcmp (SYMBOL_NAME (sym), name) == 0)
4469 block = BLOCK_SUPERBLOCK (block);
4471 return mylookup_symbol (name, block, namespace, class);
4476 /* Add a new symbol S to a block B.
4477 Infrequently, we will need to reallocate the block to make it bigger.
4478 We only detect this case when adding to top_stack->cur_block, since
4479 that's the only time we know how big the block is. FIXME. */
4482 add_symbol (struct symbol *s, struct block *b)
4484 int nsyms = BLOCK_NSYMS (b)++;
4485 struct block *origb;
4486 struct parse_stack *stackp;
4488 if (b == top_stack->cur_block &&
4489 nsyms >= top_stack->maxsyms)
4491 complaint (&symfile_complaints, "block containing %s overfilled",
4493 /* In this case shrink_block is actually grow_block, since
4494 BLOCK_NSYMS(b) is larger than its current size. */
4496 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
4498 /* Now run through the stack replacing pointers to the
4499 original block. shrink_block has already done this
4500 for the blockvector and BLOCK_FUNCTION. */
4501 for (stackp = top_stack; stackp; stackp = stackp->next)
4503 if (stackp->cur_block == origb)
4505 stackp->cur_block = b;
4506 stackp->maxsyms = BLOCK_NSYMS (b);
4510 BLOCK_SYM (b, nsyms) = s;
4513 /* Add a new block B to a symtab S */
4516 add_block (struct block *b, struct symtab *s)
4518 struct blockvector *bv = BLOCKVECTOR (s);
4520 bv = (struct blockvector *) xrealloc ((void *) bv,
4521 (sizeof (struct blockvector)
4522 + BLOCKVECTOR_NBLOCKS (bv)
4523 * sizeof (bv->block)));
4524 if (bv != BLOCKVECTOR (s))
4525 BLOCKVECTOR (s) = bv;
4527 BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
4530 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
4531 MIPS' linenumber encoding might need more than one byte
4532 to describe it, LAST is used to detect these continuation lines.
4534 Combining lines with the same line number seems like a bad idea.
4535 E.g: There could be a line number entry with the same line number after the
4536 prologue and GDB should not ignore it (this is a better way to find
4537 a prologue than mips_skip_prologue).
4538 But due to the compressed line table format there are line number entries
4539 for the same line which are needed to bridge the gap to the next
4540 line number entry. These entries have a bogus address info with them
4541 and we are unable to tell them from intended duplicate line number
4543 This is another reason why -ggdb debugging format is preferable. */
4546 add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last)
4548 /* DEC c89 sometimes produces zero linenos which confuse gdb.
4549 Change them to something sensible. */
4553 last = -2; /* make sure we record first line */
4555 if (last == lineno) /* skip continuation lines */
4558 lt->item[lt->nitems].line = lineno;
4559 lt->item[lt->nitems++].pc = adr << 2;
4563 /* Sorting and reordering procedures */
4565 /* Blocks with a smaller low bound should come first */
4568 compare_blocks (const void *arg1, const void *arg2)
4570 register int addr_diff;
4571 struct block **b1 = (struct block **) arg1;
4572 struct block **b2 = (struct block **) arg2;
4574 addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
4576 return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
4580 /* Sort the blocks of a symtab S.
4581 Reorder the blocks in the blockvector by code-address,
4582 as required by some MI search routines */
4585 sort_blocks (struct symtab *s)
4587 struct blockvector *bv = BLOCKVECTOR (s);
4589 if (BLOCKVECTOR_NBLOCKS (bv) <= 2)
4592 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
4593 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
4594 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
4595 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
4599 * This is very unfortunate: normally all functions are compiled in
4600 * the order they are found, but if the file is compiled -O3 things
4601 * are very different. It would be nice to find a reliable test
4602 * to detect -O3 images in advance.
4604 if (BLOCKVECTOR_NBLOCKS (bv) > 3)
4605 qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
4606 BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
4607 sizeof (struct block *),
4611 register CORE_ADDR high = 0;
4612 register int i, j = BLOCKVECTOR_NBLOCKS (bv);
4614 for (i = FIRST_LOCAL_BLOCK; i < j; i++)
4615 if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
4616 high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
4617 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
4620 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
4621 BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
4623 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4624 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4625 BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
4626 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
4630 /* Constructor/restructor/destructor procedures */
4632 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
4633 MAXSYMS and linenumbers MAXLINES we'll put in it */
4635 static struct symtab *
4636 new_symtab (char *name, int maxsyms, int maxlines, struct objfile *objfile)
4638 struct symtab *s = allocate_symtab (name, objfile);
4640 LINETABLE (s) = new_linetable (maxlines);
4642 /* All symtabs must have at least two blocks */
4643 BLOCKVECTOR (s) = new_bvect (2);
4644 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);
4645 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);
4646 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =
4647 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
4649 s->free_code = free_linetable;
4650 s->debugformat = obsavestring ("ECOFF", 5,
4651 &objfile->symbol_obstack);
4655 /* Allocate a new partial_symtab NAME */
4657 static struct partial_symtab *
4658 new_psymtab (char *name, struct objfile *objfile)
4660 struct partial_symtab *psymtab;
4662 psymtab = allocate_psymtab (name, objfile);
4663 psymtab->section_offsets = objfile->section_offsets;
4665 /* Keep a backpointer to the file's symbols */
4667 psymtab->read_symtab_private = ((char *)
4668 obstack_alloc (&objfile->psymbol_obstack,
4669 sizeof (struct symloc)));
4670 memset (psymtab->read_symtab_private, 0, sizeof (struct symloc));
4671 CUR_BFD (psymtab) = cur_bfd;
4672 DEBUG_SWAP (psymtab) = debug_swap;
4673 DEBUG_INFO (psymtab) = debug_info;
4674 PENDING_LIST (psymtab) = pending_list;
4676 /* The way to turn this into a symtab is to call... */
4677 psymtab->read_symtab = mdebug_psymtab_to_symtab;
4682 /* Allocate a linetable array of the given SIZE. Since the struct
4683 already includes one item, we subtract one when calculating the
4684 proper size to allocate. */
4686 static struct linetable *
4687 new_linetable (int size)
4689 struct linetable *l;
4691 size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);
4692 l = (struct linetable *) xmalloc (size);
4697 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4698 I am not so sure about the 3.4 ones.
4700 Since the struct linetable already includes one item, we subtract one when
4701 calculating the proper size to allocate. */
4703 static struct linetable *
4704 shrink_linetable (struct linetable *lt)
4707 return (struct linetable *) xrealloc ((void *) lt,
4708 (sizeof (struct linetable)
4710 * sizeof (lt->item))));
4713 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4715 static struct blockvector *
4716 new_bvect (int nblocks)
4718 struct blockvector *bv;
4721 size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
4722 bv = (struct blockvector *) xzalloc (size);
4724 BLOCKVECTOR_NBLOCKS (bv) = nblocks;
4729 /* Allocate and zero a new block of MAXSYMS symbols */
4731 static struct block *
4732 new_block (int maxsyms)
4734 int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
4736 return (struct block *) xzalloc (size);
4739 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4740 Shrink_block can also be used by add_symbol to grow a block. */
4742 static struct block *
4743 shrink_block (struct block *b, struct symtab *s)
4746 struct blockvector *bv = BLOCKVECTOR (s);
4749 /* Just reallocate it and fix references to the old one */
4751 new = (struct block *) xrealloc ((void *) b,
4752 (sizeof (struct block)
4753 + ((BLOCK_NSYMS (b) - 1)
4754 * sizeof (struct symbol *))));
4756 /* FIXME: Not worth hashing this block as it's built. */
4757 /* All callers should have created the block with new_block (), which
4758 would mean it was not previously hashed. Make sure. */
4759 gdb_assert (BLOCK_HASHTABLE (new) == 0);
4761 /* Should chase pointers to old one. Fortunately, that`s just
4762 the block`s function and inferior blocks */
4763 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
4764 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4765 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
4766 if (BLOCKVECTOR_BLOCK (bv, i) == b)
4767 BLOCKVECTOR_BLOCK (bv, i) = new;
4768 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)
4769 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;
4773 /* Create a new symbol with printname NAME */
4775 static struct symbol *
4776 new_symbol (char *name)
4778 struct symbol *s = ((struct symbol *)
4779 obstack_alloc (¤t_objfile->symbol_obstack,
4780 sizeof (struct symbol)));
4782 memset (s, 0, sizeof (*s));
4783 SYMBOL_LANGUAGE (s) = psymtab_language;
4784 SYMBOL_SET_NAMES (s, name, strlen (name), current_objfile);
4788 /* Create a new type with printname NAME */
4790 static struct type *
4791 new_type (char *name)
4795 t = alloc_type (current_objfile);
4796 TYPE_NAME (t) = name;
4797 TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default;
4801 /* Read ECOFF debugging information from a BFD section. This is
4802 called from elfread.c. It parses the section into a
4803 ecoff_debug_info struct, and then lets the rest of the file handle
4807 elfmdebug_build_psymtabs (struct objfile *objfile,
4808 const struct ecoff_debug_swap *swap, asection *sec)
4810 bfd *abfd = objfile->obfd;
4811 struct ecoff_debug_info *info;
4813 info = ((struct ecoff_debug_info *)
4814 obstack_alloc (&objfile->psymbol_obstack,
4815 sizeof (struct ecoff_debug_info)));
4817 if (!(*swap->read_debug_info) (abfd, sec, info))
4818 error ("Error reading ECOFF debugging information: %s",
4819 bfd_errmsg (bfd_get_error ()));
4821 mdebug_build_psymtabs (objfile, swap, info);
4825 /* Things used for calling functions in the inferior.
4826 These functions are exported to our companion
4827 mips-tdep.c file and are here because they play
4828 with the symbol-table explicitly. */
4830 /* Sigtramp: make sure we have all the necessary information
4831 about the signal trampoline code. Since the official code
4832 from MIPS does not do so, we make up that information ourselves.
4833 If they fix the library (unlikely) this code will neutralize itself. */
4835 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4836 here because it calls functions defined in this file, but perhaps
4837 this could be handled in a better way. Only compile it in when
4838 tm-mips.h is included. */
4843 fixup_sigtramp (void)
4847 struct block *b, *b0 = NULL;
4849 sigtramp_address = -1;
4851 /* We have to handle the following cases here:
4852 a) The Mips library has a sigtramp label within sigvec.
4853 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4854 s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
4857 b0 = SYMBOL_BLOCK_VALUE (s);
4858 s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
4862 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4863 s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
4866 /* But maybe this program uses its own version of sigvec */
4870 /* Did we or MIPSco fix the library ? */
4871 if (SYMBOL_CLASS (s) == LOC_BLOCK)
4873 sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
4874 sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
4878 sigtramp_address = SYMBOL_VALUE (s);
4879 sigtramp_end = sigtramp_address + 0x88; /* black magic */
4881 /* But what symtab does it live in ? */
4882 st = find_pc_symtab (SYMBOL_VALUE (s));
4885 * Ok, there goes the fix: turn it into a procedure, with all the
4886 * needed info. Note we make it a nested procedure of sigvec,
4887 * which is the way the (assembly) code is actually written.
4889 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
4890 SYMBOL_CLASS (s) = LOC_BLOCK;
4891 SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
4893 TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void;
4895 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4897 SYMBOL_BLOCK_VALUE (s) = b;
4898 BLOCK_START (b) = sigtramp_address;
4899 BLOCK_END (b) = sigtramp_end;
4900 BLOCK_FUNCTION (b) = s;
4901 BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
4905 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4907 struct mips_extra_func_info *e =
4908 ((struct mips_extra_func_info *)
4909 xzalloc (sizeof (struct mips_extra_func_info)));
4911 e->numargs = 0; /* the kernel thinks otherwise */
4912 e->pdr.frameoffset = 32;
4913 e->pdr.framereg = SP_REGNUM;
4914 /* Note that setting pcreg is no longer strictly necessary as
4915 mips_frame_saved_pc is now aware of signal handler frames. */
4916 e->pdr.pcreg = PC_REGNUM;
4917 e->pdr.regmask = -2;
4918 /* Offset to saved r31, in the sigtramp case the saved registers
4919 are above the frame in the sigcontext.
4920 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4921 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4922 and 32 * 4 bytes for the floating point registers. */
4923 e->pdr.regoffset = 4 + 12 + 31 * 4;
4924 e->pdr.fregmask = -1;
4925 /* Offset to saved f30 (first saved *double* register). */
4926 e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4;
4927 e->pdr.isym = (long) s;
4928 e->pdr.adr = sigtramp_address;
4930 current_objfile = st->objfile; /* Keep new_symbol happy */
4931 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
4932 SYMBOL_VALUE (s) = (long) e;
4933 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
4934 SYMBOL_CLASS (s) = LOC_CONST;
4935 SYMBOL_TYPE (s) = mdebug_type_void;
4936 current_objfile = NULL;
4939 BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s;
4942 #endif /* TM_MIPS_H */
4945 _initialize_mdebugread (void)
4948 init_type (TYPE_CODE_VOID, 1,
4950 "void", (struct objfile *) NULL);
4952 init_type (TYPE_CODE_INT, 1,
4954 "char", (struct objfile *) NULL);
4955 mdebug_type_unsigned_char =
4956 init_type (TYPE_CODE_INT, 1,
4958 "unsigned char", (struct objfile *) NULL);
4960 init_type (TYPE_CODE_INT, 2,
4962 "short", (struct objfile *) NULL);
4963 mdebug_type_unsigned_short =
4964 init_type (TYPE_CODE_INT, 2,
4966 "unsigned short", (struct objfile *) NULL);
4967 mdebug_type_int_32 =
4968 init_type (TYPE_CODE_INT, 4,
4970 "int", (struct objfile *) NULL);
4971 mdebug_type_unsigned_int_32 =
4972 init_type (TYPE_CODE_INT, 4,
4974 "unsigned int", (struct objfile *) NULL);
4975 mdebug_type_int_64 =
4976 init_type (TYPE_CODE_INT, 8,
4978 "int", (struct objfile *) NULL);
4979 mdebug_type_unsigned_int_64 =
4980 init_type (TYPE_CODE_INT, 8,
4982 "unsigned int", (struct objfile *) NULL);
4983 mdebug_type_long_32 =
4984 init_type (TYPE_CODE_INT, 4,
4986 "long", (struct objfile *) NULL);
4987 mdebug_type_unsigned_long_32 =
4988 init_type (TYPE_CODE_INT, 4,
4990 "unsigned long", (struct objfile *) NULL);
4991 mdebug_type_long_64 =
4992 init_type (TYPE_CODE_INT, 8,
4994 "long", (struct objfile *) NULL);
4995 mdebug_type_unsigned_long_64 =
4996 init_type (TYPE_CODE_INT, 8,
4998 "unsigned long", (struct objfile *) NULL);
4999 mdebug_type_long_long_64 =
5000 init_type (TYPE_CODE_INT, 8,
5002 "long long", (struct objfile *) NULL);
5003 mdebug_type_unsigned_long_long_64 =
5004 init_type (TYPE_CODE_INT, 8,
5006 "unsigned long long", (struct objfile *) NULL);
5007 mdebug_type_adr_32 =
5008 init_type (TYPE_CODE_PTR, 4,
5010 "adr_32", (struct objfile *) NULL);
5011 TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void;
5012 mdebug_type_adr_64 =
5013 init_type (TYPE_CODE_PTR, 8,
5015 "adr_64", (struct objfile *) NULL);
5016 TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void;
5018 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
5020 "float", (struct objfile *) NULL);
5021 mdebug_type_double =
5022 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
5024 "double", (struct objfile *) NULL);
5025 mdebug_type_complex =
5026 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
5028 "complex", (struct objfile *) NULL);
5029 TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float;
5030 mdebug_type_double_complex =
5031 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
5033 "double complex", (struct objfile *) NULL);
5034 TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double;
5036 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
5038 mdebug_type_string =
5039 init_type (TYPE_CODE_STRING,
5040 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
5042 (struct objfile *) NULL);
5044 /* We use TYPE_CODE_INT to print these as integers. Does this do any
5045 good? Would we be better off with TYPE_CODE_ERROR? Should
5046 TYPE_CODE_ERROR print things in hex if it knows the size? */
5047 mdebug_type_fixed_dec =
5048 init_type (TYPE_CODE_INT,
5049 TARGET_INT_BIT / TARGET_CHAR_BIT,
5051 (struct objfile *) NULL);
5053 mdebug_type_float_dec =
5054 init_type (TYPE_CODE_ERROR,
5055 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
5056 0, "floating decimal",
5057 (struct objfile *) NULL);
5059 nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0,
5060 "<function, no debug info>", NULL);
5061 TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int;
5062 nodebug_var_symbol_type =
5063 init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0,
5064 "<variable, no debug info>", NULL);