1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995
3 Free Software Foundation, Inc.
4 Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
5 CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* This module provides the function mdebug_build_psymtabs. It reads
25 ECOFF debugging information into partial symbol tables. The
26 debugging information is read from two structures. A struct
27 ecoff_debug_swap includes the sizes of each ECOFF structure and
28 swapping routines; these are fixed for a particular target. A
29 struct ecoff_debug_info points to the debugging information for a
30 particular object file.
32 ECOFF symbol tables are mostly written in the byte order of the
33 target machine. However, one section of the table (the auxiliary
34 symbol information) is written in the host byte order. There is a
35 bit in the other symbol info which describes which host byte order
36 was used. ECOFF thereby takes the trophy from Intel `b.out' for
37 the most brain-dead adaptation of a file format to byte order.
39 This module can read all four of the known byte-order combinations,
40 on any type of host. */
50 #include "stabsread.h"
51 #include "complaints.h"
53 /* These are needed if the tm.h file does not contain the necessary
54 mips specific definitions. */
56 #ifndef MIPS_EFI_SYMBOL_NAME
57 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
59 #include "coff/symconst.h"
60 typedef struct mips_extra_func_info {
63 } *mips_extra_func_info_t;
70 #include <sys/types.h>
73 #include <sys/param.h>
76 #include "gdb_string.h"
78 #include "gdb-stabs.h"
82 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
84 #include "libaout.h" /* Private BFD a.out information. */
85 #include "aout/aout64.h"
86 #include "aout/stab_gnu.h" /* STABS information */
88 #include "expression.h"
89 #include "language.h" /* Needed inside partial-stab.h */
91 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
92 #ifndef ECOFF_REG_TO_REGNUM
93 #define ECOFF_REG_TO_REGNUM(num) (num)
96 /* We put a pointer to this structure in the read_symtab_private field
101 /* Index of the FDR that this psymtab represents. */
103 /* The BFD that the psymtab was created from. */
105 const struct ecoff_debug_swap *debug_swap;
106 struct ecoff_debug_info *debug_info;
107 struct mdebug_pending **pending_list;
108 /* Pointer to external symbols for this file. */
110 /* Size of extern_tab. */
112 enum language pst_language;
115 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
116 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
117 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
118 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
119 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
120 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
122 /* Things we import explicitly from other modules */
124 extern int info_verbose;
126 /* Various complaints about symbol reading that don't abort the process */
128 static struct complaint bad_file_number_complaint =
129 {"bad file number %d", 0, 0};
131 static struct complaint index_complaint =
132 {"bad aux index at symbol %s", 0, 0};
134 static struct complaint aux_index_complaint =
135 {"bad proc end in aux found from symbol %s", 0, 0};
137 static struct complaint block_index_complaint =
138 {"bad aux index at block symbol %s", 0, 0};
140 static struct complaint unknown_ext_complaint =
141 {"unknown external symbol %s", 0, 0};
143 static struct complaint unknown_sym_complaint =
144 {"unknown local symbol %s", 0, 0};
146 static struct complaint unknown_st_complaint =
147 {"with type %d", 0, 0};
149 static struct complaint block_overflow_complaint =
150 {"block containing %s overfilled", 0, 0};
152 static struct complaint basic_type_complaint =
153 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
155 static struct complaint unknown_type_qual_complaint =
156 {"unknown type qualifier 0x%x", 0, 0};
158 static struct complaint array_index_type_complaint =
159 {"illegal array index type for %s, assuming int", 0, 0};
161 static struct complaint bad_tag_guess_complaint =
162 {"guessed tag type of %s incorrectly", 0, 0};
164 static struct complaint block_member_complaint =
165 {"declaration block contains unhandled symbol type %d", 0, 0};
167 static struct complaint stEnd_complaint =
168 {"stEnd with storage class %d not handled", 0, 0};
170 static struct complaint unknown_mdebug_symtype_complaint =
171 {"unknown symbol type 0x%x", 0, 0};
173 static struct complaint stab_unknown_complaint =
174 {"unknown stabs symbol %s", 0, 0};
176 static struct complaint pdr_for_nonsymbol_complaint =
177 {"PDR for %s, but no symbol", 0, 0};
179 static struct complaint pdr_static_symbol_complaint =
180 {"can't handle PDR for static proc at 0x%lx", 0, 0};
182 static struct complaint bad_setjmp_pdr_complaint =
183 {"fixing bad setjmp PDR from libc", 0, 0};
185 static struct complaint bad_fbitfield_complaint =
186 {"can't handle TIR fBitfield for %s", 0, 0};
188 static struct complaint bad_continued_complaint =
189 {"illegal TIR continued for %s", 0, 0};
191 static struct complaint bad_rfd_entry_complaint =
192 {"bad rfd entry for %s: file %d, index %d", 0, 0};
194 static struct complaint unexpected_type_code_complaint =
195 {"unexpected type code for %s", 0, 0};
197 static struct complaint unable_to_cross_ref_complaint =
198 {"unable to cross ref btTypedef for %s", 0, 0};
200 static struct complaint bad_indirect_xref_complaint =
201 {"unable to cross ref btIndirect for %s", 0, 0};
203 static struct complaint illegal_forward_tq0_complaint =
204 {"illegal tq0 in forward typedef for %s", 0, 0};
206 static struct complaint illegal_forward_bt_complaint =
207 {"illegal bt %d in forward typedef for %s", 0, 0};
209 static struct complaint bad_linetable_guess_complaint =
210 {"guessed size of linetable for %s incorrectly", 0, 0};
212 static struct complaint bad_ext_ifd_complaint =
213 {"bad ifd for external symbol: %d (max %d)", 0, 0};
215 static struct complaint bad_ext_iss_complaint =
216 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
218 /* Macros and extra defs */
220 /* Puns: hard to find whether -g was used and how */
222 #define MIN_GLEVEL GLEVEL_0
223 #define compare_glevel(a,b) \
224 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
225 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
227 /* Things that really are local to this module */
229 /* Remember what we deduced to be the source language of this psymtab. */
231 static enum language psymtab_language = language_unknown;
237 /* How to parse debugging information for CUR_BFD. */
239 static const struct ecoff_debug_swap *debug_swap;
241 /* Pointers to debugging information for CUR_BFD. */
243 static struct ecoff_debug_info *debug_info;
245 /* Pointer to current file decriptor record, and its index */
250 /* Index of current symbol */
254 /* Note how much "debuggable" this image is. We would like
255 to see at least one FDR with full symbols */
260 /* When examining .o files, report on undefined symbols */
262 static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
264 /* Pseudo symbol to use when putting stabs into the symbol table. */
266 static char stabs_symbol[] = STABS_SYMBOL;
268 /* Types corresponding to mdebug format bt* basic types. */
270 static struct type *mdebug_type_void;
271 static struct type *mdebug_type_char;
272 static struct type *mdebug_type_short;
273 static struct type *mdebug_type_int_32;
274 #define mdebug_type_int mdebug_type_int_32
275 static struct type *mdebug_type_int_64;
276 static struct type *mdebug_type_long_32;
277 static struct type *mdebug_type_long_64;
278 static struct type *mdebug_type_long_long_64;
279 static struct type *mdebug_type_unsigned_char;
280 static struct type *mdebug_type_unsigned_short;
281 static struct type *mdebug_type_unsigned_int_32;
282 static struct type *mdebug_type_unsigned_int_64;
283 static struct type *mdebug_type_unsigned_long_32;
284 static struct type *mdebug_type_unsigned_long_64;
285 static struct type *mdebug_type_unsigned_long_long_64;
286 static struct type *mdebug_type_adr_32;
287 static struct type *mdebug_type_adr_64;
288 static struct type *mdebug_type_float;
289 static struct type *mdebug_type_double;
290 static struct type *mdebug_type_complex;
291 static struct type *mdebug_type_double_complex;
292 static struct type *mdebug_type_fixed_dec;
293 static struct type *mdebug_type_float_dec;
294 static struct type *mdebug_type_string;
296 /* Types for symbols from files compiled without debugging info. */
298 static struct type *nodebug_func_symbol_type;
299 static struct type *nodebug_var_symbol_type;
301 /* Nonzero if we have seen ecoff debugging info for a file. */
303 static int found_ecoff_debugging_info;
305 /* Forward declarations */
308 upgrade_type PARAMS ((int, struct type **, int, union aux_ext *, int, char *));
311 parse_partial_symbols PARAMS ((struct objfile *,
312 struct section_offsets *));
315 *get_rfd PARAMS ((int, int));
318 has_opaque_xref PARAMS ((FDR *, SYMR *));
321 cross_ref PARAMS ((int, union aux_ext *, struct type **, enum type_code,
322 char **, int, char *));
324 static struct symbol *
325 new_symbol PARAMS ((char *));
328 new_type PARAMS ((char *));
330 static struct block *
331 new_block PARAMS ((int));
333 static struct symtab *
334 new_symtab PARAMS ((char *, int, int, struct objfile *));
336 static struct linetable *
337 new_linetable PARAMS ((int));
339 static struct blockvector *
340 new_bvect PARAMS ((int));
343 parse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int, struct section_offsets *));
346 parse_type PARAMS ((int, union aux_ext *, unsigned int, int *, int, char *));
348 static struct symbol *
349 mylookup_symbol PARAMS ((char *, struct block *, enum namespace,
350 enum address_class));
352 static struct block *
353 shrink_block PARAMS ((struct block *, struct symtab *));
356 xzalloc PARAMS ((unsigned int));
359 sort_blocks PARAMS ((struct symtab *));
362 compare_blocks PARAMS ((const void *, const void *));
364 static struct partial_symtab *
365 new_psymtab PARAMS ((char *, struct objfile *, struct section_offsets *));
368 psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *));
371 add_block PARAMS ((struct block *, struct symtab *));
374 add_symbol PARAMS ((struct symbol *, struct block *));
377 add_line PARAMS ((struct linetable *, int, CORE_ADDR, int));
379 static struct linetable *
380 shrink_linetable PARAMS ((struct linetable *));
383 handle_psymbol_enumerators PARAMS ((struct objfile *, FDR *, int, CORE_ADDR));
386 mdebug_next_symbol_text PARAMS ((struct objfile *));
388 /* Address bounds for the signal trampoline in inferior, if any */
390 CORE_ADDR sigtramp_address, sigtramp_end;
392 /* Allocate zeroed memory */
398 PTR p = xmalloc (size);
404 /* Exported procedure: Builds a symtab from the PST partial one.
405 Restores the environment in effect when PST was created, delegates
406 most of the work to an ancillary procedure, and sorts
407 and reorders the symtab list at the end */
410 mdebug_psymtab_to_symtab (pst)
411 struct partial_symtab *pst;
419 printf_filtered ("Reading in symbols for %s...", pst->filename);
420 gdb_flush (gdb_stdout);
423 next_symbol_text_func = mdebug_next_symbol_text;
425 psymtab_to_symtab_1 (pst, pst->filename);
427 /* Match with global symbols. This only needs to be done once,
428 after all of the symtabs and dependencies have been read in. */
429 scan_file_globals (pst->objfile);
432 printf_filtered ("done.\n");
435 /* File-level interface functions */
437 /* Find a file descriptor given its index RF relative to a file CF */
447 fdrs = debug_info->fdr;
449 /* Object files do not have the RFD table, all refs are absolute */
452 (*debug_swap->swap_rfd_in) (cur_bfd,
453 ((char *) debug_info->external_rfd
455 * debug_swap->external_rfd_size)),
460 /* Return a safer print NAME for a file descriptor */
467 return "<stripped file>";
470 return debug_info->ss + f->issBase + f->rss;
474 /* Read in and parse the symtab of the file OBJFILE. Symbols from
475 different sections are relocated via the SECTION_OFFSETS. */
478 mdebug_build_psymtabs (objfile, swap, info, section_offsets)
479 struct objfile *objfile;
480 const struct ecoff_debug_swap *swap;
481 struct ecoff_debug_info *info;
482 struct section_offsets *section_offsets;
484 cur_bfd = objfile->obfd;
488 /* Make sure all the FDR information is swapped in. */
489 if (info->fdr == (FDR *) NULL)
495 info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack,
496 (info->symbolic_header.ifdMax
498 fdr_src = info->external_fdr;
500 + info->symbolic_header.ifdMax * swap->external_fdr_size);
502 for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)
503 (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr);
506 parse_partial_symbols (objfile, section_offsets);
509 /* Check to make sure file was compiled with -g. If not, warn the
510 user of this limitation. */
511 if (compare_glevel (max_glevel, GLEVEL_2) < 0)
513 if (max_gdbinfo == 0)
514 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
516 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
517 gdb_flush (gdb_stdout);
522 /* Local utilities */
524 /* Map of FDR indexes to partial symtabs */
528 struct partial_symtab *pst; /* the psymtab proper */
529 long n_globals; /* exported globals (external symbols) */
530 long globals_offset; /* cumulative */
534 /* Utility stack, used to nest procedures and blocks properly.
535 It is a doubly linked list, to avoid too many alloc/free.
536 Since we might need it quite a few times it is NOT deallocated
539 static struct parse_stack
541 struct parse_stack *next, *prev;
542 struct symtab *cur_st; /* Current symtab. */
543 struct block *cur_block; /* Block in it. */
545 /* What are we parsing. stFile, or stBlock are for files and
546 blocks. stProc or stStaticProc means we have seen the start of a
547 procedure, but not the start of the block within in. When we see
548 the start of that block, we change it to stNil, without pushing a
549 new block, i.e. stNil means both a procedure and a block. */
553 int maxsyms; /* Max symbols in this block. */
554 struct type *cur_type; /* Type we parse fields for. */
555 int cur_field; /* Field number in cur_type. */
556 CORE_ADDR procadr; /* Start addres of this procedure */
557 int numargs; /* Its argument count */
560 *top_stack; /* Top stack ptr */
563 /* Enter a new lexical context */
568 struct parse_stack *new;
570 /* Reuse frames if possible */
571 if (top_stack && top_stack->prev)
572 new = top_stack->prev;
574 new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));
575 /* Initialize new frame with previous content */
578 register struct parse_stack *prev = new->prev;
581 top_stack->prev = new;
583 new->next = top_stack;
588 /* Exit a lexical context */
596 top_stack = top_stack->next;
600 /* Cross-references might be to things we haven't looked at
601 yet, e.g. type references. To avoid too many type
602 duplications we keep a quick fixup table, an array
603 of lists of references indexed by file descriptor */
605 struct mdebug_pending
607 struct mdebug_pending *next; /* link */
608 char *s; /* the unswapped symbol */
609 struct type *t; /* its partial type descriptor */
613 /* The pending information is kept for an entire object file, and used
614 to be in the sym_private field. I took it out when I split
615 mdebugread from mipsread, because this might not be the only type
616 of symbols read from an object file. Instead, we allocate the
617 pending information table when we create the partial symbols, and
618 we store a pointer to the single table in each psymtab. */
620 static struct mdebug_pending **pending_list;
622 /* Check whether we already saw symbol SH in file FH */
624 static struct mdebug_pending *
625 is_pending_symbol (fh, sh)
629 int f_idx = fh - debug_info->fdr;
630 register struct mdebug_pending *p;
632 /* Linear search is ok, list is typically no more than 10 deep */
633 for (p = pending_list[f_idx]; p; p = p->next)
639 /* Add a new symbol SH of type T */
642 add_pending (fh, sh, t)
647 int f_idx = fh - debug_info->fdr;
648 struct mdebug_pending *p = is_pending_symbol (fh, sh);
650 /* Make sure we do not make duplicates */
653 p = ((struct mdebug_pending *)
654 obstack_alloc (¤t_objfile->psymbol_obstack,
655 sizeof (struct mdebug_pending)));
658 p->next = pending_list[f_idx];
659 pending_list[f_idx] = p;
664 /* Parsing Routines proper. */
666 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
667 For blocks, procedures and types we open a new lexical context.
668 This is basically just a big switch on the symbol's type. Argument
669 AX is the base pointer of aux symbols for this file (fh->iauxBase).
670 EXT_SH points to the unswapped symbol, which is needed for struct,
671 union, etc., types; it is NULL for an EXTR. BIGEND says whether
672 aux symbols are big-endian or little-endian. Return count of
673 SYMR's handled (normally one). */
676 parse_symbol (sh, ax, ext_sh, bigend, section_offsets)
681 struct section_offsets *section_offsets;
683 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
684 void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) =
685 debug_swap->swap_sym_in;
689 struct mdebug_pending *pend;
693 enum address_class class;
695 long svalue = sh->value;
698 if (ext_sh == (char *) NULL)
699 name = debug_info->ssext + sh->iss;
701 name = debug_info->ss + cur_fdr->issBase + sh->iss;
706 /* Do not relocate relative values.
707 The value of a stEnd symbol is the displacement from the
708 corresponding start symbol value.
709 The value of a stBlock symbol is the displacement from the
710 procedure address. */
711 if (sh->st != stEnd && sh->st != stBlock)
712 sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
719 sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA);
723 sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS);
732 case stGlobal: /* external symbol, goes into global block */
734 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
736 s = new_symbol (name);
737 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
740 case stStatic: /* static data, goes into current block. */
742 b = top_stack->cur_block;
743 s = new_symbol (name);
744 if (sh->sc == scCommon || sh->sc == scSCommon)
746 /* It is a FORTRAN common block. At least for SGI Fortran the
747 address is not in the symbol; we need to fix it later in
748 scan_file_globals. */
749 int bucket = hashname (SYMBOL_NAME (s));
750 SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
751 global_sym_chain[bucket] = s;
754 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
757 case stLocal: /* local variable, goes into current block */
758 if (sh->sc == scRegister)
760 class = LOC_REGISTER;
761 svalue = ECOFF_REG_TO_REGNUM (svalue);
765 b = top_stack->cur_block;
766 s = new_symbol (name);
767 SYMBOL_VALUE (s) = svalue;
769 data: /* Common code for symbols describing data */
770 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
771 SYMBOL_CLASS (s) = class;
774 /* Type could be missing if file is compiled without debugging info. */
775 if (sh->sc == scUndefined || sh->sc == scNil || sh->index == indexNil)
776 SYMBOL_TYPE (s) = nodebug_var_symbol_type;
778 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
779 /* Value of a data symbol is its memory address */
782 case stParam: /* arg to procedure, goes into current block */
784 found_ecoff_debugging_info = 1;
785 top_stack->numargs++;
787 /* Special GNU C++ name. */
788 if (name[0] == CPLUS_MARKER && name[1] == 't' && name[2] == 0)
789 name = "this"; /* FIXME, not alloc'd in obstack */
790 s = new_symbol (name);
792 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
796 /* Pass by value in register. */
797 SYMBOL_CLASS(s) = LOC_REGPARM;
798 svalue = ECOFF_REG_TO_REGNUM (svalue);
801 /* Pass by reference on stack. */
802 SYMBOL_CLASS(s) = LOC_REF_ARG;
805 /* Pass by reference in register. */
806 SYMBOL_CLASS(s) = LOC_REGPARM_ADDR;
807 svalue = ECOFF_REG_TO_REGNUM (svalue);
810 /* Pass by value on stack. */
811 SYMBOL_CLASS(s) = LOC_ARG;
814 SYMBOL_VALUE (s) = svalue;
815 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
816 add_symbol (s, top_stack->cur_block);
819 case stLabel: /* label, goes into current block */
820 s = new_symbol (name);
821 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */
822 SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */
823 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
824 SYMBOL_TYPE (s) = mdebug_type_int;
825 add_symbol (s, top_stack->cur_block);
828 case stProc: /* Procedure, usually goes into global block */
829 case stStaticProc: /* Static procedure, goes into current block */
830 s = new_symbol (name);
831 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
832 SYMBOL_CLASS (s) = LOC_BLOCK;
833 /* Type of the return value */
834 if (sh->sc == scUndefined || sh->sc == scNil)
837 t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
838 b = top_stack->cur_block;
839 if (sh->st == stProc)
841 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
842 /* The next test should normally be true, but provides a
843 hook for nested functions (which we don't want to make
845 if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
846 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
847 /* Irix 5 sometimes has duplicate names for the same
848 function. We want to add such names up at the global
849 level, not as a nested function. */
850 else if (sh->value == top_stack->procadr)
851 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
855 /* Make a type for the procedure itself */
856 SYMBOL_TYPE (s) = lookup_function_type (t);
858 /* Create and enter a new lexical context */
859 b = new_block (top_stack->maxsyms);
860 SYMBOL_BLOCK_VALUE (s) = b;
861 BLOCK_FUNCTION (b) = s;
862 BLOCK_START (b) = BLOCK_END (b) = sh->value;
863 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
864 add_block (b, top_stack->cur_st);
866 /* Not if we only have partial info */
867 if (sh->sc == scUndefined || sh->sc == scNil)
871 top_stack->cur_block = b;
872 top_stack->blocktype = sh->st;
873 top_stack->cur_type = SYMBOL_TYPE (s);
874 top_stack->cur_field = -1;
875 top_stack->procadr = sh->value;
876 top_stack->numargs = 0;
879 /* Beginning of code for structure, union, and enum definitions.
880 They all share a common set of local variables, defined here. */
882 enum type_code type_code;
888 case stStruct: /* Start a block defining a struct type */
889 type_code = TYPE_CODE_STRUCT;
890 goto structured_common;
892 case stUnion: /* Start a block defining a union type */
893 type_code = TYPE_CODE_UNION;
894 goto structured_common;
896 case stEnum: /* Start a block defining an enum type */
897 type_code = TYPE_CODE_ENUM;
898 goto structured_common;
900 case stBlock: /* Either a lexical block, or some type */
901 if (sh->sc != scInfo && sh->sc != scCommon && sh->sc != scSCommon)
902 goto case_stBlock_code; /* Lexical block */
904 type_code = TYPE_CODE_UNDEF; /* We have a type. */
906 /* Common code for handling struct, union, enum, and/or as-yet-
907 unknown-type blocks of info about structured data. `type_code'
908 has been set to the proper TYPE_CODE, if we know it. */
910 found_ecoff_debugging_info = 1;
912 top_stack->blocktype = stBlock;
914 /* First count the number of fields and the highest value. */
917 for (ext_tsym = ext_sh + external_sym_size;
919 ext_tsym += external_sym_size)
923 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
931 if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
932 /* If the type of the member is Nil (or Void),
933 without qualifiers, assume the tag is an
935 Alpha cc -migrate enums are recognized by a zero
936 index and a zero symbol value. */
937 if (tsym.index == indexNil
938 || (tsym.index == 0 && sh->value == 0))
939 type_code = TYPE_CODE_ENUM;
942 (*debug_swap->swap_tir_in) (bigend,
943 &ax[tsym.index].a_ti,
945 if ((tir.bt == btNil || tir.bt == btVoid)
947 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 complain (&block_member_complaint, tsym.st);
997 /* In an stBlock, there is no way to distinguish structs,
998 unions, and enums at this point. This is a bug in the
999 original design (that has been fixed with the recent
1000 addition of the stStruct, stUnion, and stEnum symbol
1001 types.) The way you can tell is if/when you see a variable
1002 or field of that type. In that case the variable's type
1003 (in the AUX table) says if the type is struct, union, or
1004 enum, and points back to the stBlock here. So you can
1005 patch the tag kind up later - but only if there actually is
1006 a variable or field of that type.
1008 So until we know for sure, we will guess at this point.
1010 If the first member has index==indexNil or a void type,
1011 assume we have an enumeration.
1012 Otherwise, if there is more than one member, and all
1013 the members have offset 0, assume we have a union.
1014 Otherwise, assume we have a struct.
1016 The heuristic could guess wrong in the case of of an
1017 enumeration with no members or a union with one (or zero)
1018 members, or when all except the last field of a struct have
1019 width zero. These are uncommon and/or illegal situations,
1020 and in any case guessing wrong probably doesn't matter
1023 But if we later do find out we were wrong, we fixup the tag
1024 kind. Members of an enumeration must be handled
1025 differently from struct/union fields, and that is harder to
1026 patch up, but luckily we shouldn't need to. (If there are
1027 any enumeration members, we can tell for sure it's an enum
1030 if (type_code == TYPE_CODE_UNDEF)
1031 if (nfields > 1 && max_value == 0)
1032 type_code = TYPE_CODE_UNION;
1034 type_code = TYPE_CODE_STRUCT;
1036 /* Create a new type or use the pending type. */
1037 pend = is_pending_symbol (cur_fdr, ext_sh);
1038 if (pend == (struct mdebug_pending *) NULL)
1040 t = new_type (NULL);
1041 add_pending (cur_fdr, ext_sh, t);
1046 /* Do not set the tag name if it is a compiler generated tag name
1047 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1048 Alpha cc puts out an sh->iss of zero for those. */
1049 if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
1050 TYPE_TAG_NAME (t) = NULL;
1052 TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack,
1055 TYPE_CODE (t) = type_code;
1056 TYPE_LENGTH (t) = sh->value;
1057 TYPE_NFIELDS (t) = nfields;
1058 TYPE_FIELDS (t) = f = ((struct field *)
1060 nfields * sizeof (struct field)));
1062 if (type_code == TYPE_CODE_ENUM)
1064 int unsigned_enum = 1;
1066 /* This is a non-empty enum. */
1068 /* DEC c89 has the number of enumerators in the sh.value field,
1069 not the type length, so we have to compensate for that
1070 incompatibility quirk.
1071 This might do the wrong thing for an enum with one or two
1072 enumerators and gcc -gcoff -fshort-enums, but these cases
1073 are hopefully rare enough.
1074 Alpha cc -migrate has a sh.value field of zero, we adjust
1076 if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)
1077 || TYPE_LENGTH (t) == 0)
1078 TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT;
1079 for (ext_tsym = ext_sh + external_sym_size;
1081 ext_tsym += external_sym_size)
1084 struct symbol *enum_sym;
1086 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
1088 if (tsym.st != stMember)
1091 f->bitpos = tsym.value;
1093 f->name = debug_info->ss + cur_fdr->issBase + tsym.iss;
1096 enum_sym = ((struct symbol *)
1097 obstack_alloc (¤t_objfile->symbol_obstack,
1098 sizeof (struct symbol)));
1099 memset ((PTR) enum_sym, 0, sizeof (struct symbol));
1100 SYMBOL_NAME (enum_sym) = f->name;
1101 SYMBOL_CLASS (enum_sym) = LOC_CONST;
1102 SYMBOL_TYPE (enum_sym) = t;
1103 SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
1104 SYMBOL_VALUE (enum_sym) = tsym.value;
1105 if (SYMBOL_VALUE (enum_sym) < 0)
1107 add_symbol (enum_sym, top_stack->cur_block);
1109 /* Skip the stMembers that we've handled. */
1114 TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED;
1116 /* make this the current type */
1117 top_stack->cur_type = t;
1118 top_stack->cur_field = 0;
1120 /* Do not create a symbol for alpha cc unnamed structs. */
1124 /* gcc puts out an empty struct for an opaque struct definitions,
1125 do not create a symbol for it either. */
1126 if (TYPE_NFIELDS (t) == 0)
1128 TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
1132 s = new_symbol (name);
1133 SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
1134 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1135 SYMBOL_VALUE (s) = 0;
1136 SYMBOL_TYPE (s) = t;
1137 add_symbol (s, top_stack->cur_block);
1140 /* End of local variables shared by struct, union, enum, and
1141 block (as yet unknown struct/union/enum) processing. */
1145 found_ecoff_debugging_info = 1;
1146 /* beginnning of (code) block. Value of symbol
1147 is the displacement from procedure start */
1148 push_parse_stack ();
1150 /* Do not start a new block if this is the outermost block of a
1151 procedure. This allows the LOC_BLOCK symbol to point to the
1152 block with the local variables, so funcname::var works. */
1153 if (top_stack->blocktype == stProc
1154 || top_stack->blocktype == stStaticProc)
1156 top_stack->blocktype = stNil;
1160 top_stack->blocktype = stBlock;
1161 b = new_block (top_stack->maxsyms);
1162 BLOCK_START (b) = sh->value + top_stack->procadr;
1163 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1164 top_stack->cur_block = b;
1165 add_block (b, top_stack->cur_st);
1168 case stEnd: /* end (of anything) */
1169 if (sh->sc == scInfo || sh->sc == scCommon || sh->sc == scSCommon)
1171 /* Finished with type */
1172 top_stack->cur_type = 0;
1174 else if (sh->sc == scText &&
1175 (top_stack->blocktype == stProc ||
1176 top_stack->blocktype == stStaticProc))
1178 /* Finished with procedure */
1179 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
1180 struct mips_extra_func_info *e;
1182 struct type *ftype = top_stack->cur_type;
1185 BLOCK_END (top_stack->cur_block) += sh->value; /* size */
1187 /* Make up special symbol to contain procedure specific info */
1188 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
1189 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
1190 SYMBOL_CLASS (s) = LOC_CONST;
1191 SYMBOL_TYPE (s) = mdebug_type_void;
1192 e = ((struct mips_extra_func_info *)
1193 obstack_alloc (¤t_objfile->symbol_obstack,
1194 sizeof (struct mips_extra_func_info)));
1195 memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));
1196 SYMBOL_VALUE (s) = (long) e;
1197 e->numargs = top_stack->numargs;
1198 e->pdr.framereg = -1;
1199 add_symbol (s, top_stack->cur_block);
1201 /* Reallocate symbols, saving memory */
1202 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
1204 /* f77 emits proc-level with address bounds==[0,0],
1205 So look for such child blocks, and patch them. */
1206 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
1208 struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
1209 if (BLOCK_SUPERBLOCK (b_bad) == b
1210 && BLOCK_START (b_bad) == top_stack->procadr
1211 && BLOCK_END (b_bad) == top_stack->procadr)
1213 BLOCK_START (b_bad) = BLOCK_START (b);
1214 BLOCK_END (b_bad) = BLOCK_END (b);
1218 if (TYPE_NFIELDS (ftype) <= 0)
1220 /* No parameter type information is recorded with the function's
1221 type. Set that from the type of the parameter symbols. */
1222 int nparams = top_stack->numargs;
1228 TYPE_NFIELDS (ftype) = nparams;
1229 TYPE_FIELDS (ftype) = (struct field *)
1230 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
1232 for (i = iparams = 0; iparams < nparams; i++)
1234 sym = BLOCK_SYM (b, i);
1235 switch (SYMBOL_CLASS (sym))
1240 case LOC_REGPARM_ADDR:
1241 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
1251 else if (sh->sc == scText && top_stack->blocktype == stBlock)
1253 /* End of (code) block. The value of the symbol is the
1254 displacement from the procedure`s start address of the
1255 end of this block. */
1256 BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
1257 shrink_block (top_stack->cur_block, top_stack->cur_st);
1259 else if (sh->sc == scText && top_stack->blocktype == stNil)
1261 /* End of outermost block. Pop parse stack and ignore. The
1262 following stEnd of stProc will take care of the block. */
1265 else if (sh->sc == scText && top_stack->blocktype == stFile)
1267 /* End of file. Pop parse stack and ignore. Higher
1268 level code deals with this. */
1272 complain (&stEnd_complaint, sh->sc);
1274 pop_parse_stack (); /* restore previous lexical context */
1277 case stMember: /* member of struct or union */
1278 f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
1280 f->bitpos = sh->value;
1282 f->type = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name);
1283 f->bitsize = bitsize;
1286 case stIndirect: /* forward declaration on Irix5 */
1287 /* Forward declarations from Irix5 cc are handled by cross_ref,
1291 case stTypedef: /* type definition */
1292 found_ecoff_debugging_info = 1;
1294 /* Typedefs for forward declarations and opaque structs from alpha cc
1295 are handled by cross_ref, skip them. */
1299 /* Parse the type or use the pending type. */
1300 pend = is_pending_symbol (cur_fdr, ext_sh);
1301 if (pend == (struct mdebug_pending *) NULL)
1303 t = parse_type (cur_fd, ax, sh->index, (int *)NULL, bigend, name);
1304 add_pending (cur_fdr, ext_sh, t);
1309 /* mips cc puts out a typedef with the name of the struct for forward
1310 declarations. These should not go into the symbol table and
1311 TYPE_NAME should not be set for them.
1312 They can't be distinguished from an intentional typedef to
1313 the same name however:
1315 struct x { int ix; int jx; };
1319 struct xx {int ixx; int jxx; };
1320 generates a cross referencing stTypedef for x and xx.
1321 The user visible effect of this is that the type of a pointer
1322 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1323 The problem is fixed with alpha cc and Irix5 cc. */
1325 /* However if the typedef cross references to an opaque aggregate, it
1326 is safe to omit it from the symbol table. */
1328 if (has_opaque_xref (cur_fdr, sh))
1330 s = new_symbol (name);
1331 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1332 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1333 SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
1334 SYMBOL_TYPE (s) = t;
1335 add_symbol (s, top_stack->cur_block);
1337 /* Incomplete definitions of structs should not get a name. */
1338 if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
1339 && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
1340 || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
1341 && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
1343 if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
1344 || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
1346 /* If we are giving a name to a type such as "pointer to
1347 foo" or "function returning foo", we better not set
1348 the TYPE_NAME. If the program contains "typedef char
1349 *caddr_t;", we don't want all variables of type char
1350 * to print as caddr_t. This is not just a
1351 consequence of GDB's type management; CC and GCC (at
1352 least through version 2.4) both output variables of
1353 either type char * or caddr_t with the type
1354 refering to the stTypedef symbol for caddr_t. If a future
1355 compiler cleans this up it GDB is not ready for it
1356 yet, but if it becomes ready we somehow need to
1357 disable this check (without breaking the PCC/GCC2.4
1362 Fortunately, this check seems not to be necessary
1363 for anything except pointers or functions. */
1366 TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s);
1370 case stFile: /* file name */
1371 push_parse_stack ();
1372 top_stack->blocktype = sh->st;
1375 /* I`ve never seen these for C */
1377 break; /* register relocation */
1379 break; /* forwarding address */
1381 break; /* constant */
1383 complain (&unknown_mdebug_symtype_complaint, sh->st);
1390 /* Parse the type information provided in the raw AX entries for
1391 the symbol SH. Return the bitfield size in BS, in case.
1392 We must byte-swap the AX entries before we use them; BIGEND says whether
1393 they are big-endian or little-endian (from fh->fBigendian). */
1395 static struct type *
1396 parse_type (fd, ax, aux_index, bs, bigend, sym_name)
1399 unsigned int aux_index;
1404 /* Null entries in this map are treated specially */
1405 static struct type **map_bt[] =
1407 &mdebug_type_void, /* btNil */
1408 &mdebug_type_adr_32, /* btAdr */
1409 &mdebug_type_char, /* btChar */
1410 &mdebug_type_unsigned_char, /* btUChar */
1411 &mdebug_type_short, /* btShort */
1412 &mdebug_type_unsigned_short, /* btUShort */
1413 &mdebug_type_int_32, /* btInt */
1414 &mdebug_type_unsigned_int_32, /* btUInt */
1415 &mdebug_type_long_32, /* btLong */
1416 &mdebug_type_unsigned_long_32, /* btULong */
1417 &mdebug_type_float, /* btFloat */
1418 &mdebug_type_double, /* btDouble */
1425 &mdebug_type_complex, /* btComplex */
1426 &mdebug_type_double_complex, /* btDComplex */
1428 &mdebug_type_fixed_dec, /* btFixedDec */
1429 &mdebug_type_float_dec, /* btFloatDec */
1430 &mdebug_type_string, /* btString */
1433 &mdebug_type_void, /* btVoid */
1434 0, /* DEC C++: Pointer to member */
1435 0, /* DEC C++: Virtual function table */
1436 0, /* DEC C++: Class (Record) */
1437 &mdebug_type_long_64, /* btLong64 */
1438 &mdebug_type_unsigned_long_64, /* btULong64 */
1439 &mdebug_type_long_long_64, /* btLongLong64 */
1440 &mdebug_type_unsigned_long_long_64, /* btULongLong64 */
1441 &mdebug_type_adr_64, /* btAdr64 */
1442 &mdebug_type_int_64, /* btInt64 */
1443 &mdebug_type_unsigned_int_64, /* btUInt64 */
1447 struct type *tp = 0;
1448 enum type_code type_code = TYPE_CODE_UNDEF;
1450 /* Handle undefined types, they have indexNil. */
1451 if (aux_index == indexNil)
1452 return mdebug_type_int;
1454 /* Handle corrupt aux indices. */
1455 if (aux_index >= (debug_info->fdr + fd)->caux)
1457 complain (&index_complaint, sym_name);
1458 return mdebug_type_int;
1462 /* Use aux as a type information record, map its basic type. */
1463 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1464 if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt)))
1466 complain (&basic_type_complaint, t->bt, sym_name);
1467 return mdebug_type_int;
1471 tp = *map_bt[t->bt];
1476 /* Cannot use builtin types -- build our own */
1480 type_code = TYPE_CODE_STRUCT;
1483 type_code = TYPE_CODE_UNION;
1486 type_code = TYPE_CODE_ENUM;
1489 type_code = TYPE_CODE_RANGE;
1492 type_code = TYPE_CODE_SET;
1495 /* alpha cc -migrate uses this for typedefs. The true type will
1496 be obtained by crossreferencing below. */
1497 type_code = TYPE_CODE_ERROR;
1500 /* alpha cc uses this for typedefs. The true type will be
1501 obtained by crossreferencing below. */
1502 type_code = TYPE_CODE_ERROR;
1505 complain (&basic_type_complaint, t->bt, sym_name);
1506 return mdebug_type_int;
1510 /* Move on to next aux */
1515 int width = AUX_GET_WIDTH (bigend, ax);
1517 /* Inhibit core dumps with some cfront generated objects that
1519 if (bs == (int *)NULL)
1521 /* Alpha cc -migrate encodes char and unsigned char types
1522 as short and unsigned short types with a field width of 8.
1523 Enum types also have a field width which we ignore for now. */
1524 if (t->bt == btShort && width == 8)
1525 tp = mdebug_type_char;
1526 else if (t->bt == btUShort && width == 8)
1527 tp = mdebug_type_unsigned_char;
1528 else if (t->bt == btEnum)
1531 complain (&bad_fbitfield_complaint, sym_name);
1538 /* A btIndirect entry cross references to an aux entry containing
1540 if (t->bt == btIndirect)
1547 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
1549 if (rn->rfd == 0xfff)
1551 rf = AUX_GET_ISYM (bigend, ax);
1559 complain (&bad_indirect_xref_complaint, sym_name);
1560 return mdebug_type_int;
1562 xref_fh = get_rfd (fd, rf);
1563 xref_fd = xref_fh - debug_info->fdr;
1564 tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
1565 rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
1568 /* All these types really point to some (common) MIPS type
1569 definition, and only the type-qualifiers fully identify
1570 them. We'll make the same effort at sharing. */
1571 if (t->bt == btStruct ||
1575 /* btSet (I think) implies that the name is a tag name, not a typedef
1576 name. This apparently is a MIPS extension for C sets. */
1581 /* Try to cross reference this type, build new type on failure. */
1582 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1583 if (tp == (struct type *) NULL)
1584 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1586 /* DEC c89 produces cross references to qualified aggregate types,
1587 dereference them. */
1588 while (TYPE_CODE (tp) == TYPE_CODE_PTR
1589 || TYPE_CODE (tp) == TYPE_CODE_ARRAY)
1590 tp = tp->target_type;
1592 /* Make sure that TYPE_CODE(tp) has an expected type code.
1593 Any type may be returned from cross_ref if file indirect entries
1595 if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
1596 && TYPE_CODE (tp) != TYPE_CODE_UNION
1597 && TYPE_CODE (tp) != TYPE_CODE_ENUM)
1599 complain (&unexpected_type_code_complaint, sym_name);
1604 /* Usually, TYPE_CODE(tp) is already type_code. The main
1605 exception is if we guessed wrong re struct/union/enum.
1606 But for struct vs. union a wrong guess is harmless, so
1607 don't complain(). */
1608 if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
1609 && type_code != TYPE_CODE_ENUM)
1610 || (TYPE_CODE (tp) != TYPE_CODE_ENUM
1611 && type_code == TYPE_CODE_ENUM))
1613 complain (&bad_tag_guess_complaint, sym_name);
1616 if (TYPE_CODE (tp) != type_code)
1618 TYPE_CODE (tp) = type_code;
1621 /* Do not set the tag name if it is a compiler generated tag name
1622 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1623 if (name[0] == '.' || name[0] == '\0')
1624 TYPE_TAG_NAME (tp) = NULL;
1625 else if (TYPE_TAG_NAME (tp) == NULL
1626 || !STREQ (TYPE_TAG_NAME (tp), name))
1627 TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),
1628 ¤t_objfile->type_obstack);
1632 /* All these types really point to some (common) MIPS type
1633 definition, and only the type-qualifiers fully identify
1634 them. We'll make the same effort at sharing.
1635 FIXME: We are not doing any guessing on range types. */
1636 if (t->bt == btRange)
1640 /* Try to cross reference this type, build new type on failure. */
1641 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1642 if (tp == (struct type *) NULL)
1643 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1645 /* Make sure that TYPE_CODE(tp) has an expected type code.
1646 Any type may be returned from cross_ref if file indirect entries
1648 if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
1650 complain (&unexpected_type_code_complaint, sym_name);
1654 /* Usually, TYPE_CODE(tp) is already type_code. The main
1655 exception is if we guessed wrong re struct/union/enum. */
1656 if (TYPE_CODE (tp) != type_code)
1658 complain (&bad_tag_guess_complaint, sym_name);
1659 TYPE_CODE (tp) = type_code;
1661 if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))
1662 TYPE_NAME (tp) = obsavestring (name, strlen (name),
1663 ¤t_objfile->type_obstack);
1666 if (t->bt == btTypedef)
1670 /* Try to cross reference this type, it should succeed. */
1671 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1672 if (tp == (struct type *) NULL)
1674 complain (&unable_to_cross_ref_complaint, sym_name);
1675 tp = mdebug_type_int;
1679 /* Deal with range types */
1680 if (t->bt == btRange)
1682 TYPE_NFIELDS (tp) = 2;
1683 TYPE_FIELDS (tp) = ((struct field *)
1684 TYPE_ALLOC (tp, 2 * sizeof (struct field)));
1685 TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),
1686 ¤t_objfile->type_obstack);
1687 TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);
1689 TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),
1690 ¤t_objfile->type_obstack);
1691 TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);
1695 /* Parse all the type qualifiers now. If there are more
1696 than 6 the game will continue in the next aux */
1700 #define PARSE_TQ(tq) \
1701 if (t->tq != tqNil) \
1702 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1714 /* mips cc 2.x and gcc never put out continued aux entries. */
1718 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1722 /* Complain for illegal continuations due to corrupt aux entries. */
1724 complain (&bad_continued_complaint, sym_name);
1729 /* Make up a complex type from a basic one. Type is passed by
1730 reference in TPP and side-effected as necessary. The type
1731 qualifier TQ says how to handle the aux symbols at AX for
1732 the symbol SX we are currently analyzing. BIGEND says whether
1733 aux symbols are big-endian or little-endian.
1734 Returns the number of aux symbols we parsed. */
1737 upgrade_type (fd, tpp, tq, ax, bigend, sym_name)
1748 /* Used in array processing */
1759 t = lookup_pointer_type (*tpp);
1764 t = lookup_function_type (*tpp);
1771 /* Determine and record the domain type (type of index) */
1772 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
1778 rf = AUX_GET_ISYM (bigend, ax);
1781 fh = get_rfd (fd, rf);
1783 indx = parse_type (fh - debug_info->fdr,
1784 debug_info->external_aux + fh->iauxBase,
1785 id, (int *) NULL, bigend, sym_name);
1787 /* The bounds type should be an integer type, but might be anything
1788 else due to corrupt aux entries. */
1789 if (TYPE_CODE (indx) != TYPE_CODE_INT)
1791 complain (&array_index_type_complaint, sym_name);
1792 indx = mdebug_type_int;
1795 /* Get the bounds, and create the array type. */
1797 lower = AUX_GET_DNLOW (bigend, ax);
1799 upper = AUX_GET_DNHIGH (bigend, ax);
1801 rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
1803 range = create_range_type ((struct type *) NULL, indx,
1806 t = create_array_type ((struct type *) NULL, *tpp, range);
1808 /* We used to fill in the supplied array element bitsize
1809 here if the TYPE_LENGTH of the target type was zero.
1810 This happens for a `pointer to an array of anonymous structs',
1811 but in this case the array element bitsize is also zero,
1812 so nothing is gained.
1813 And we used to check the TYPE_LENGTH of the target type against
1814 the supplied array element bitsize.
1815 gcc causes a mismatch for `pointer to array of object',
1816 since the sdb directives it uses do not have a way of
1817 specifying the bitsize, but it does no harm (the
1818 TYPE_LENGTH should be correct) and we should be able to
1819 ignore the erroneous bitsize from the auxiliary entry safely.
1820 dbx seems to ignore it too. */
1822 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1824 if (TYPE_LENGTH (*tpp) == 0)
1826 TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB;
1833 /* Volatile -- currently ignored */
1837 /* Const -- currently ignored */
1841 complain (&unknown_type_qual_complaint, tq);
1847 /* Parse a procedure descriptor record PR. Note that the procedure is
1848 parsed _after_ the local symbols, now we just insert the extra
1849 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1850 already been placed in the procedure's main block. Note also that
1851 images that have been partially stripped (ld -x) have been deprived
1852 of local symbols, and we have to cope with them here. FIRST_OFF is
1853 the offset of the first procedure for this FDR; we adjust the
1854 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1855 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1856 in question, or NULL to use top_stack->cur_block. */
1858 static void parse_procedure PARAMS ((PDR *, struct symtab *, CORE_ADDR,
1859 struct partial_symtab *));
1862 parse_procedure (pr, search_symtab, lowest_pdr_addr, pst)
1864 struct symtab *search_symtab;
1865 CORE_ADDR lowest_pdr_addr;
1866 struct partial_symtab *pst;
1868 struct symbol *s, *i;
1870 struct mips_extra_func_info *e;
1873 /* Simple rule to find files linked "-x" */
1874 if (cur_fdr->rss == -1)
1878 /* Static procedure at address pr->adr. Sigh. */
1879 /* FIXME-32x64. assuming pr->adr fits in long. */
1880 complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr);
1888 (*debug_swap->swap_ext_in) (cur_bfd,
1889 ((char *) debug_info->external_ext
1891 * debug_swap->external_ext_size)),
1893 sh_name = debug_info->ssext + she.asym.iss;
1901 (*debug_swap->swap_sym_in) (cur_bfd,
1902 ((char *) debug_info->external_sym
1903 + ((cur_fdr->isymBase + pr->isym)
1904 * debug_swap->external_sym_size)),
1906 sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
1909 if (search_symtab != NULL)
1912 /* This loses both in the case mentioned (want a static, find a global),
1913 but also if we are looking up a non-mangled name which happens to
1914 match the name of a mangled function. */
1915 /* We have to save the cur_fdr across the call to lookup_symbol.
1916 If the pdr is for a static function and if a global function with
1917 the same name exists, lookup_symbol will eventually read in the symtab
1918 for the global function and clobber cur_fdr. */
1919 FDR *save_cur_fdr = cur_fdr;
1920 s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
1921 cur_fdr = save_cur_fdr;
1925 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),
1931 s = mylookup_symbol (sh_name, top_stack->cur_block,
1932 VAR_NAMESPACE, LOC_BLOCK);
1936 b = SYMBOL_BLOCK_VALUE (s);
1940 complain (&pdr_for_nonsymbol_complaint, sh_name);
1944 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1945 s = new_symbol (sh_name);
1946 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1947 SYMBOL_CLASS (s) = LOC_BLOCK;
1948 /* Donno its type, hope int is ok */
1949 SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int);
1950 add_symbol (s, top_stack->cur_block);
1951 /* Wont have symbols for this one */
1953 SYMBOL_BLOCK_VALUE (s) = b;
1954 BLOCK_FUNCTION (b) = s;
1955 BLOCK_START (b) = pr->adr;
1956 /* BOUND used to be the end of procedure's text, but the
1957 argument is no longer passed in. */
1958 BLOCK_END (b) = bound;
1959 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1960 add_block (b, top_stack->cur_st);
1964 i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);
1968 e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);
1970 e->pdr.isym = (long) s;
1971 e->pdr.adr += pst->textlow - lowest_pdr_addr;
1973 /* Correct incorrect setjmp procedure descriptor from the library
1974 to make backtrace through setjmp work. */
1975 if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp"))
1977 complain (&bad_setjmp_pdr_complaint, 0);
1978 e->pdr.pcreg = RA_REGNUM;
1979 e->pdr.regmask = 0x80000000;
1980 e->pdr.regoffset = -4;
1984 /* It would be reasonable that functions that have been compiled
1985 without debugging info have a btNil type for their return value,
1986 and functions that are void and are compiled with debugging info
1988 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1989 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1991 The glevel field in cur_fdr could be used to determine the presence
1992 of debugging info, but GCC doesn't always pass the -g switch settings
1993 to the assembler and GAS doesn't set the glevel field from the -g switch
1995 To work around these problems, the return value type of a TYPE_CODE_VOID
1996 function is adjusted accordingly if no debugging info was found in the
1997 compilation unit. */
1999 if (processing_gcc_compilation == 0
2000 && found_ecoff_debugging_info == 0
2001 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)
2002 SYMBOL_TYPE (s) = nodebug_func_symbol_type;
2005 /* Relocate the extra function info pointed to by the symbol table. */
2008 ecoff_relocate_efi (sym, delta)
2012 struct mips_extra_func_info *e;
2014 e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym);
2016 e->pdr.adr += delta;
2019 /* Parse the external symbol ES. Just call parse_symbol() after
2020 making sure we know where the aux are for it.
2021 BIGEND says whether aux entries are big-endian or little-endian.
2023 This routine clobbers top_stack->cur_block and ->cur_st. */
2025 static void parse_external PARAMS ((EXTR *, int, struct section_offsets *));
2028 parse_external (es, bigend, section_offsets)
2031 struct section_offsets *section_offsets;
2035 if (es->ifd != ifdNil)
2038 cur_fdr = debug_info->fdr + cur_fd;
2039 ax = debug_info->external_aux + cur_fdr->iauxBase;
2043 cur_fdr = debug_info->fdr;
2047 /* Reading .o files */
2048 if (es->asym.sc == scUndefined || es->asym.sc == scNil)
2051 switch (es->asym.st)
2054 /* These are generated for static symbols in .o files,
2075 /* FIXME: Turn this into a complaint? */
2077 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2078 what, debug_info->ssext + es->asym.iss,
2079 fdr_name (cur_fdr));
2083 switch (es->asym.st)
2087 /* There is no need to parse the external procedure symbols.
2088 If they are from objects compiled without -g, their index will
2089 be indexNil, and the symbol definition from the minimal symbol
2090 is preferrable (yielding a function returning int instead of int).
2091 If the index points to a local procedure symbol, the local
2092 symbol already provides the correct type.
2093 Note that the index of the external procedure symbol points
2094 to the local procedure symbol in the local symbol table, and
2095 _not_ to the auxiliary symbol info. */
2099 /* Global common symbols are resolved by the runtime loader,
2101 if (es->asym.sc == scCommon || es->asym.sc == scSCommon)
2104 /* Note that the case of a symbol with indexNil must be handled
2105 anyways by parse_symbol(). */
2106 parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets);
2113 /* Parse the line number info for file descriptor FH into
2114 GDB's linetable LT. MIPS' encoding requires a little bit
2115 of magic to get things out. Note also that MIPS' line
2116 numbers can go back and forth, apparently we can live
2117 with that and do not need to reorder our linetables */
2119 static void parse_lines PARAMS ((FDR *, PDR *, struct linetable *, int,
2120 struct partial_symtab *, CORE_ADDR));
2123 parse_lines (fh, pr, lt, maxlines, pst, lowest_pdr_addr)
2126 struct linetable *lt;
2128 struct partial_symtab *pst;
2129 CORE_ADDR lowest_pdr_addr;
2131 unsigned char *base;
2133 int delta, count, lineno = 0;
2135 if (fh->cbLine == 0)
2138 /* Scan by procedure descriptors */
2140 for (j = 0; j < fh->cpd; j++, pr++)
2144 unsigned char *halt;
2146 /* No code for this one */
2147 if (pr->iline == ilineNil ||
2148 pr->lnLow == -1 || pr->lnHigh == -1)
2151 /* Determine start and end address of compressed line bytes for
2153 base = debug_info->line + fh->cbLineOffset;
2154 if (j != (fh->cpd - 1))
2155 halt = base + pr[1].cbLineOffset;
2157 halt = base + fh->cbLine;
2158 base += pr->cbLineOffset;
2160 adr = pst->textlow + pr->adr - lowest_pdr_addr;
2162 l = adr >> 2; /* in words */
2163 for (lineno = pr->lnLow; base < halt; )
2165 count = *base & 0x0f;
2166 delta = *base++ >> 4;
2171 delta = (base[0] << 8) | base[1];
2172 if (delta >= 0x8000)
2176 lineno += delta; /* first delta is 0 */
2178 /* Complain if the line table overflows. Could happen
2179 with corrupt binaries. */
2180 if (lt->nitems >= maxlines)
2182 complain (&bad_linetable_guess_complaint, fdr_name (fh));
2185 k = add_line (lt, lineno, l, k);
2191 /* Master parsing procedure for first-pass reading of file symbols
2192 into a partial_symtab. */
2195 parse_partial_symbols (objfile, section_offsets)
2196 struct objfile *objfile;
2197 struct section_offsets *section_offsets;
2199 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
2200 const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
2201 const bfd_size_type external_ext_size = debug_swap->external_ext_size;
2202 void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *))
2203 = debug_swap->swap_ext_in;
2204 void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
2205 = debug_swap->swap_sym_in;
2206 void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *))
2207 = debug_swap->swap_rfd_in;
2209 HDRR *hdr = &debug_info->symbolic_header;
2210 /* Running pointers */
2215 register EXTR *ext_in;
2218 struct partial_symtab *pst;
2220 int past_first_source_file = 0;
2222 /* List of current psymtab's include files */
2223 char **psymtab_include_list;
2224 int includes_allocated;
2227 struct pst_map *fdr_to_pst;
2228 /* Index within current psymtab dependency list */
2229 struct partial_symtab **dependency_list;
2230 int dependencies_used, dependencies_allocated;
2231 struct cleanup *old_chain;
2233 enum language prev_language;
2234 asection *text_sect;
2235 int relocatable = 0;
2237 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2238 the shared libraries are prelinked at a high memory address.
2239 We have to adjust the start address of the object file for this case,
2240 by setting it to the start address of the first procedure in the file.
2241 But we should do no adjustments if we are debugging a .o file, where
2242 the text section (and fh->adr) really starts at zero. */
2243 text_sect = bfd_get_section_by_name (cur_bfd, ".text");
2244 if (text_sect != NULL
2245 && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
2248 extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack,
2249 sizeof (EXTR) * hdr->iextMax);
2251 includes_allocated = 30;
2253 psymtab_include_list = (char **) alloca (includes_allocated *
2255 next_symbol_text_func = mdebug_next_symbol_text;
2257 dependencies_allocated = 30;
2258 dependencies_used = 0;
2260 (struct partial_symtab **) alloca (dependencies_allocated *
2261 sizeof (struct partial_symtab *));
2263 last_source_file = NULL;
2268 * Only parse the Local and External symbols, and the Relative FDR.
2269 * Fixup enough of the loader symtab to be able to use it.
2270 * Allocate space only for the file's portions we need to
2275 max_glevel = MIN_GLEVEL;
2277 /* Allocate the map FDR -> PST.
2278 Minor hack: -O3 images might claim some global data belongs
2279 to FDR -1. We`ll go along with that */
2280 fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);
2281 old_chain = make_cleanup (free, fdr_to_pst);
2284 struct partial_symtab *pst = new_psymtab ("", objfile, section_offsets);
2285 fdr_to_pst[-1].pst = pst;
2289 /* Allocate the global pending list. */
2291 ((struct mdebug_pending **)
2292 obstack_alloc (&objfile->psymbol_obstack,
2293 hdr->ifdMax * sizeof (struct mdebug_pending *)));
2294 memset ((PTR) pending_list, 0,
2295 hdr->ifdMax * sizeof (struct mdebug_pending *));
2297 /* Pass 0 over external syms: swap them in. */
2298 ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));
2299 make_cleanup (free, ext_block);
2301 ext_out = (char *) debug_info->external_ext;
2302 ext_out_end = ext_out + hdr->iextMax * external_ext_size;
2304 for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
2305 (*swap_ext_in) (cur_bfd, ext_out, ext_in);
2307 /* Pass 1 over external syms: Presize and partition the list */
2309 ext_in_end = ext_in + hdr->iextMax;
2310 for (; ext_in < ext_in_end; ext_in++)
2312 /* See calls to complain below. */
2313 if (ext_in->ifd >= -1
2314 && ext_in->ifd < hdr->ifdMax
2315 && ext_in->asym.iss >= 0
2316 && ext_in->asym.iss < hdr->issExtMax)
2317 fdr_to_pst[ext_in->ifd].n_globals++;
2320 /* Pass 1.5 over files: partition out global symbol space */
2322 for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
2324 fdr_to_pst[f_idx].globals_offset = s_idx;
2325 s_idx += fdr_to_pst[f_idx].n_globals;
2326 fdr_to_pst[f_idx].n_globals = 0;
2329 /* Pass 2 over external syms: fill in external symbols */
2331 ext_in_end = ext_in + hdr->iextMax;
2332 for (; ext_in < ext_in_end; ext_in++)
2334 enum minimal_symbol_type ms_type = mst_text;
2335 CORE_ADDR svalue = ext_in->asym.value;
2337 /* The Irix 5 native tools seem to sometimes generate bogus
2338 external symbols. */
2339 if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
2341 complain (&bad_ext_ifd_complaint, ext_in->ifd, hdr->ifdMax);
2344 if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
2346 complain (&bad_ext_iss_complaint, ext_in->asym.iss,
2351 extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
2352 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
2354 if (ext_in->asym.sc == scUndefined || ext_in->asym.sc == scNil)
2357 name = debug_info->ssext + ext_in->asym.iss;
2358 switch (ext_in->asym.st)
2361 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2364 ms_type = mst_file_text;
2365 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2368 if (ext_in->asym.sc == scCommon || ext_in->asym.sc == scSCommon)
2370 /* The value of a common symbol is its size, not its address.
2374 else if (ext_in->asym.sc == scData
2375 || ext_in->asym.sc == scSData
2376 || ext_in->asym.sc == scRData
2377 || ext_in->asym.sc == scPData
2378 || ext_in->asym.sc == scXData)
2381 svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);
2386 svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);
2390 if (ext_in->asym.sc == scAbs)
2392 else if (ext_in->asym.sc == scText
2393 || ext_in->asym.sc == scInit
2394 || ext_in->asym.sc == scFini)
2396 ms_type = mst_file_text;
2397 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2399 else if (ext_in->asym.sc == scData
2400 || ext_in->asym.sc == scSData
2401 || ext_in->asym.sc == scRData
2402 || ext_in->asym.sc == scPData
2403 || ext_in->asym.sc == scXData)
2405 ms_type = mst_file_data;
2406 svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);
2410 ms_type = mst_file_bss;
2411 svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);
2415 /* The alpha has the section start addresses in stLocal symbols
2416 whose name starts with a `.'. Skip those but complain for all
2417 other stLocal symbols. */
2422 ms_type = mst_unknown;
2423 complain (&unknown_ext_complaint, name);
2425 prim_record_minimal_symbol (name, svalue, ms_type, objfile);
2428 /* Pass 3 over files, over local syms: fill in static symbols */
2429 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2431 struct partial_symtab *save_pst;
2435 cur_fdr = fh = debug_info->fdr + f_idx;
2439 fdr_to_pst[f_idx].pst = NULL;
2443 /* Determine the start address for this object file from the
2444 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2448 if (relocatable || textlow != 0)
2449 textlow += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2453 pst = start_psymtab_common (objfile, section_offsets,
2456 objfile->global_psymbols.next,
2457 objfile->static_psymbols.next);
2458 pst->read_symtab_private = ((char *)
2459 obstack_alloc (&objfile->psymbol_obstack,
2460 sizeof (struct symloc)));
2461 memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc));
2464 FDR_IDX (pst) = f_idx;
2465 CUR_BFD (pst) = cur_bfd;
2466 DEBUG_SWAP (pst) = debug_swap;
2467 DEBUG_INFO (pst) = debug_info;
2468 PENDING_LIST (pst) = pending_list;
2470 /* The way to turn this into a symtab is to call... */
2471 pst->read_symtab = mdebug_psymtab_to_symtab;
2473 /* Set up language for the pst.
2474 The language from the FDR is used if it is unambigious (e.g. cfront
2475 with native cc and g++ will set the language to C).
2476 Otherwise we have to deduce the language from the filename.
2477 Native ecoff has every header file in a separate FDR, so
2478 deduce_language_from_filename will return language_unknown for
2479 a header file, which is not what we want.
2480 But the FDRs for the header files are after the FDR for the source
2481 file, so we can assign the language of the source file to the
2482 following header files. Then we save the language in the private
2483 pst data so that we can reuse it when building symtabs. */
2484 prev_language = psymtab_language;
2488 case langCplusplusV2:
2489 psymtab_language = language_cplus;
2492 psymtab_language = deduce_language_from_filename (fdr_name (fh));
2495 if (psymtab_language == language_unknown)
2496 psymtab_language = prev_language;
2497 PST_PRIVATE (pst)->pst_language = psymtab_language;
2499 pst->texthigh = pst->textlow;
2501 /* For stabs-in-ecoff files, the second symbol must be @stab.
2502 This symbol is emitted by mips-tfile to signal that the
2503 current object file uses encapsulated stabs instead of mips
2504 ecoff for local symbols. (It is the second symbol because
2505 the first symbol is the stFile used to signal the start of a
2507 processing_gcc_compilation = 0;
2510 (*swap_sym_in) (cur_bfd,
2511 ((char *) debug_info->external_sym
2512 + (fh->isymBase + 1) * external_sym_size),
2514 if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol))
2515 processing_gcc_compilation = 2;
2518 if (processing_gcc_compilation != 0)
2520 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
2525 (*swap_sym_in) (cur_bfd,
2526 (((char *) debug_info->external_sym)
2527 + (fh->isymBase + cur_sdx) * external_sym_size),
2529 type_code = ECOFF_UNMARK_STAB (sh.index);
2530 if (!ECOFF_IS_STAB (&sh))
2532 if (sh.st == stProc || sh.st == stStaticProc)
2537 sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2538 if (sh.st == stStaticProc)
2540 namestring = debug_info->ss + fh->issBase + sh.iss;
2541 prim_record_minimal_symbol_and_info (namestring,
2548 procaddr = sh.value;
2550 isym = AUX_GET_ISYM (fh->fBigendian,
2551 (debug_info->external_aux
2554 (*swap_sym_in) (cur_bfd,
2555 ((char *) debug_info->external_sym
2556 + ((fh->isymBase + isym - 1)
2557 * external_sym_size)),
2561 long high = procaddr + sh.value;
2563 /* Kludge for Irix 5.2 zero fh->adr. */
2565 && (pst->textlow == 0 || procaddr < pst->textlow))
2566 pst->textlow = procaddr;
2567 if (high > pst->texthigh)
2568 pst->texthigh = high;
2571 else if (sh.st == stStatic)
2585 namestring = debug_info->ss + fh->issBase + sh.iss;
2586 sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA);
2587 prim_record_minimal_symbol_and_info (namestring,
2596 namestring = debug_info->ss + fh->issBase + sh.iss;
2597 sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS);
2598 prim_record_minimal_symbol_and_info (namestring,
2609 #define SET_NAMESTRING() \
2610 namestring = debug_info->ss + fh->issBase + sh.iss
2611 #define CUR_SYMBOL_TYPE type_code
2612 #define CUR_SYMBOL_VALUE sh.value
2613 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2615 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
2616 #define HANDLE_RBRAC(val) \
2617 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2618 #include "partial-stab.h"
2623 for (cur_sdx = 0; cur_sdx < fh->csym;)
2626 enum address_class class;
2628 (*swap_sym_in) (cur_bfd,
2629 ((char *) debug_info->external_sym
2630 + ((fh->isymBase + cur_sdx)
2631 * external_sym_size)),
2634 if (ECOFF_IS_STAB (&sh))
2640 /* Non absolute static symbols go into the minimal table. */
2641 if (sh.sc == scUndefined || sh.sc == scNil
2642 || (sh.index == indexNil
2643 && (sh.st != stStatic || sh.sc == scAbs)))
2645 /* FIXME, premature? */
2650 name = debug_info->ss + fh->issBase + sh.iss;
2655 /* The value of a stEnd symbol is the displacement from the
2656 corresponding start symbol value, do not relocate it. */
2658 sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2665 sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA);
2669 sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS);
2680 prim_record_minimal_symbol_and_info (name, sh.value,
2681 mst_file_text, NULL,
2682 SECT_OFF_TEXT, objfile);
2687 /* Usually there is a local and a global stProc symbol
2688 for a function. This means that the function name
2689 has already been entered into the mimimal symbol table
2690 while processing the global symbols in pass 2 above.
2691 One notable exception is the PROGRAM name from
2692 f77 compiled executables, it is only put out as
2693 local stProc symbol, and a global MAIN__ stProc symbol
2694 points to it. It doesn't matter though, as gdb is
2695 still able to find the PROGRAM name via the partial
2696 symbol table, and the MAIN__ symbol via the minimal
2698 if (sh.st == stProc)
2699 ADD_PSYMBOL_TO_LIST (name, strlen (name),
2700 VAR_NAMESPACE, LOC_BLOCK,
2701 objfile->global_psymbols,
2702 sh.value, psymtab_language, objfile);
2704 ADD_PSYMBOL_TO_LIST (name, strlen (name),
2705 VAR_NAMESPACE, LOC_BLOCK,
2706 objfile->static_psymbols,
2707 sh.value, psymtab_language, objfile);
2709 /* Skip over procedure to next one. */
2710 if (sh.index >= hdr->iauxMax)
2712 /* Should not happen, but does when cross-compiling
2713 with the MIPS compiler. FIXME -- pull later. */
2714 complain (&index_complaint, name);
2715 new_sdx = cur_sdx + 1; /* Don't skip at all */
2718 new_sdx = AUX_GET_ISYM (fh->fBigendian,
2719 (debug_info->external_aux
2722 procaddr = sh.value;
2724 if (new_sdx <= cur_sdx)
2726 /* This should not happen either... FIXME. */
2727 complain (&aux_index_complaint, name);
2728 new_sdx = cur_sdx + 1; /* Don't skip backward */
2732 (*swap_sym_in) (cur_bfd,
2733 ((char *) debug_info->external_sym
2734 + ((fh->isymBase + cur_sdx - 1)
2735 * external_sym_size)),
2740 /* Kludge for Irix 5.2 zero fh->adr. */
2742 && (pst->textlow == 0 || procaddr < pst->textlow))
2743 pst->textlow = procaddr;
2745 high = procaddr + sh.value;
2746 if (high > pst->texthigh)
2747 pst->texthigh = high;
2750 case stStatic: /* Variable */
2755 || sh.sc == scXData)
2756 prim_record_minimal_symbol_and_info (name, sh.value,
2757 mst_file_data, NULL,
2761 prim_record_minimal_symbol_and_info (name, sh.value,
2768 case stIndirect:/* Irix5 forward declaration */
2769 /* Skip forward declarations from Irix5 cc */
2772 case stTypedef:/* Typedef */
2773 /* Skip typedefs for forward declarations and opaque
2774 structs from alpha and mips cc. */
2775 if (sh.iss == 0 || has_opaque_xref (fh, &sh))
2777 class = LOC_TYPEDEF;
2780 case stConstant: /* Constant decl */
2787 case stBlock: /* { }, str, un, enum*/
2788 /* Do not create a partial symbol for cc unnamed aggregates
2789 and gcc empty aggregates. */
2790 if ((sh.sc == scInfo
2791 || sh.sc == scCommon || sh.sc == scSCommon)
2793 && sh.index != cur_sdx + 2)
2795 ADD_PSYMBOL_TO_LIST (name, strlen (name),
2796 STRUCT_NAMESPACE, LOC_TYPEDEF,
2797 objfile->static_psymbols,
2799 psymtab_language, objfile);
2801 handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);
2803 /* Skip over the block */
2805 if (new_sdx <= cur_sdx)
2807 /* This happens with the Ultrix kernel. */
2808 complain (&block_index_complaint, name);
2809 new_sdx = cur_sdx + 1; /* Don't skip backward */
2814 case stFile: /* File headers */
2815 case stLabel: /* Labels */
2816 case stEnd: /* Ends of files */
2819 case stLocal: /* Local variables */
2820 /* Normally these are skipped because we skip over
2821 all blocks we see. However, these can occur
2822 as visible symbols in a .h file that contains code. */
2826 /* Both complaints are valid: one gives symbol name,
2827 the other the offending symbol type. */
2828 complain (&unknown_sym_complaint, name);
2829 complain (&unknown_st_complaint, sh.st);
2833 /* Use this gdb symbol */
2834 ADD_PSYMBOL_TO_LIST (name, strlen (name),
2835 VAR_NAMESPACE, class,
2836 objfile->static_psymbols, sh.value,
2837 psymtab_language, objfile);
2839 cur_sdx++; /* Go to next file symbol */
2842 /* Now do enter the external symbols. */
2843 ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
2844 cur_sdx = fdr_to_pst[f_idx].n_globals;
2845 PST_PRIVATE (save_pst)->extern_count = cur_sdx;
2846 PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
2847 for (; --cur_sdx >= 0; ext_ptr++)
2849 enum address_class class;
2854 if (ext_ptr->ifd != f_idx)
2856 psh = &ext_ptr->asym;
2858 /* Do not add undefined symbols to the partial symbol table. */
2859 if (psh->sc == scUndefined || psh->sc == scNil)
2862 svalue = psh->value;
2866 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2873 svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);
2877 svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);
2884 /* These are generated for static symbols in .o files,
2889 /* External procedure symbols have been entered
2890 into the minimal symbol table in pass 2 above.
2891 Ignore them, as parse_external will ignore them too. */
2897 complain (&unknown_ext_complaint,
2898 debug_info->ssext + psh->iss);
2899 /* Fall through, pretend it's global. */
2901 /* Global common symbols are resolved by the runtime loader,
2903 if (psh->sc == scCommon || psh->sc == scSCommon)
2909 name = debug_info->ssext + psh->iss;
2910 ADD_PSYMBOL_ADDR_TO_LIST (name, strlen (name),
2911 VAR_NAMESPACE, class,
2912 objfile->global_psymbols,
2914 psymtab_language, objfile);
2918 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2919 empty and put on the free list. */
2920 fdr_to_pst[f_idx].pst = end_psymtab (save_pst,
2921 psymtab_include_list, includes_used,
2922 -1, save_pst->texthigh,
2923 dependency_list, dependencies_used);
2925 dependencies_used = 0;
2927 if (objfile->ei.entry_point >= save_pst->textlow &&
2928 objfile->ei.entry_point < save_pst->texthigh)
2930 objfile->ei.entry_file_lowpc = save_pst->textlow;
2931 objfile->ei.entry_file_highpc = save_pst->texthigh;
2934 /* The objfile has its functions reordered if this partial symbol
2935 table overlaps any other partial symbol table.
2936 We cannot assume a reordered objfile if a partial symbol table
2937 is contained within another partial symbol table, as partial symbol
2938 tables for include files with executable code are contained
2939 within the partial symbol table for the including source file,
2940 and we do not want to flag the objfile reordered for these cases.
2942 This strategy works well for Irix-5.2 shared libraries, but we
2943 might have to use a more elaborate (and slower) algorithm for
2945 save_pst = fdr_to_pst[f_idx].pst;
2946 if (save_pst != NULL
2947 && save_pst->textlow != 0
2948 && !(objfile->flags & OBJF_REORDERED))
2950 ALL_OBJFILE_PSYMTABS (objfile, pst)
2953 && save_pst->textlow >= pst->textlow
2954 && save_pst->textlow < pst->texthigh
2955 && save_pst->texthigh > pst->texthigh)
2957 objfile->flags |= OBJF_REORDERED;
2964 /* Now scan the FDRs for dependencies */
2965 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2967 fh = f_idx + debug_info->fdr;
2968 pst = fdr_to_pst[f_idx].pst;
2970 if (pst == (struct partial_symtab *)NULL)
2973 /* This should catch stabs-in-ecoff. */
2977 /* Skip the first file indirect entry as it is a self dependency
2978 for source files or a reverse .h -> .c dependency for header files. */
2979 pst->number_of_dependencies = 0;
2981 ((struct partial_symtab **)
2982 obstack_alloc (&objfile->psymbol_obstack,
2984 * sizeof (struct partial_symtab *))));
2985 for (s_idx = 1; s_idx < fh->crfd; s_idx++)
2989 (*swap_rfd_in) (cur_bfd,
2990 ((char *) debug_info->external_rfd
2991 + (fh->rfdBase + s_idx) * external_rfd_size),
2993 if (rh < 0 || rh >= hdr->ifdMax)
2995 complain (&bad_file_number_complaint, rh);
2999 /* Skip self dependencies of header files. */
3003 /* Do not add to dependeny list if psymtab was empty. */
3004 if (fdr_to_pst[rh].pst == (struct partial_symtab *)NULL)
3006 pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;
3010 /* Remove the dummy psymtab created for -O3 images above, if it is
3011 still empty, to enable the detection of stripped executables. */
3012 if (objfile->psymtabs->next == NULL
3013 && objfile->psymtabs->number_of_dependencies == 0
3014 && objfile->psymtabs->n_global_syms == 0
3015 && objfile->psymtabs->n_static_syms == 0)
3016 objfile->psymtabs = NULL;
3017 do_cleanups (old_chain);
3020 /* If the current psymbol has an enumerated type, we need to add
3021 all the the enum constants to the partial symbol table. */
3024 handle_psymbol_enumerators (objfile, fh, stype, svalue)
3025 struct objfile *objfile;
3030 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
3031 void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
3032 = debug_swap->swap_sym_in;
3033 char *ext_sym = ((char *) debug_info->external_sym
3034 + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
3044 /* It is an enumerated type if the next symbol entry is a stMember
3045 and its auxiliary index is indexNil or its auxiliary entry
3046 is a plain btNil or btVoid.
3047 Alpha cc -migrate enums are recognized by a zero index and
3048 a zero symbol value. */
3049 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3050 if (sh.st != stMember)
3053 if (sh.index == indexNil
3054 || (sh.index == 0 && svalue == 0))
3056 (*debug_swap->swap_tir_in) (fh->fBigendian,
3057 &(debug_info->external_aux
3058 + fh->iauxBase + sh.index)->a_ti,
3060 if ((tir.bt != btNil && tir.bt != btVoid) || tir.tq0 != tqNil)
3072 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3073 if (sh.st != stMember)
3075 name = debug_info->ss + cur_fdr->issBase + sh.iss;
3077 /* Note that the value doesn't matter for enum constants
3078 in psymtabs, just in symtabs. */
3079 ADD_PSYMBOL_TO_LIST (name, strlen (name),
3080 VAR_NAMESPACE, LOC_CONST,
3081 objfile->static_psymbols, 0,
3082 psymtab_language, objfile);
3083 ext_sym += external_sym_size;
3088 mdebug_next_symbol_text (objfile)
3089 struct objfile *objfile; /* argument objfile is currently unused */
3094 (*debug_swap->swap_sym_in) (cur_bfd,
3095 ((char *) debug_info->external_sym
3096 + ((cur_fdr->isymBase + cur_sdx)
3097 * debug_swap->external_sym_size)),
3099 return debug_info->ss + cur_fdr->issBase + sh.iss;
3102 /* Ancillary function to psymtab_to_symtab(). Does all the work
3103 for turning the partial symtab PST into a symtab, recurring
3104 first on all dependent psymtabs. The argument FILENAME is
3105 only passed so we can see in debug stack traces what file
3108 This function has a split personality, based on whether the
3109 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3110 The flow of control and even the memory allocation differs. FIXME. */
3113 psymtab_to_symtab_1 (pst, filename)
3114 struct partial_symtab *pst;
3117 bfd_size_type external_sym_size;
3118 bfd_size_type external_pdr_size;
3119 void (*swap_sym_in) PARAMS ((bfd *, PTR, SYMR *));
3120 void (*swap_pdr_in) PARAMS ((bfd *, PTR, PDR *));
3124 struct linetable *lines;
3125 CORE_ADDR lowest_pdr_addr = 0;
3131 /* Read in all partial symbtabs on which this one is dependent.
3132 NOTE that we do have circular dependencies, sigh. We solved
3133 that by setting pst->readin before this point. */
3135 for (i = 0; i < pst->number_of_dependencies; i++)
3136 if (!pst->dependencies[i]->readin)
3138 /* Inform about additional files to be read in. */
3141 fputs_filtered (" ", gdb_stdout);
3143 fputs_filtered ("and ", gdb_stdout);
3145 printf_filtered ("%s...",
3146 pst->dependencies[i]->filename);
3147 wrap_here (""); /* Flush output */
3148 gdb_flush (gdb_stdout);
3150 /* We only pass the filename for debug purposes */
3151 psymtab_to_symtab_1 (pst->dependencies[i],
3152 pst->dependencies[i]->filename);
3155 /* Do nothing if this is a dummy psymtab. */
3157 if (pst->n_global_syms == 0 && pst->n_static_syms == 0
3158 && pst->textlow == 0 && pst->texthigh == 0)
3161 /* Now read the symbols for this symtab */
3163 cur_bfd = CUR_BFD (pst);
3164 debug_swap = DEBUG_SWAP (pst);
3165 debug_info = DEBUG_INFO (pst);
3166 pending_list = PENDING_LIST (pst);
3167 external_sym_size = debug_swap->external_sym_size;
3168 external_pdr_size = debug_swap->external_pdr_size;
3169 swap_sym_in = debug_swap->swap_sym_in;
3170 swap_pdr_in = debug_swap->swap_pdr_in;
3171 current_objfile = pst->objfile;
3172 cur_fd = FDR_IDX (pst);
3173 fh = ((cur_fd == -1)
3175 : debug_info->fdr + cur_fd);
3178 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3179 processing_gcc_compilation = 0;
3180 if (fh != (FDR *) NULL && fh->csym >= 2)
3184 (*swap_sym_in) (cur_bfd,
3185 ((char *) debug_info->external_sym
3186 + (fh->isymBase + 1) * external_sym_size),
3188 if (STREQ (debug_info->ss + fh->issBase + sh.iss,
3191 /* We indicate that this is a GCC compilation so that certain
3192 features will be enabled in stabsread/dbxread. */
3193 processing_gcc_compilation = 2;
3197 if (processing_gcc_compilation != 0)
3200 /* This symbol table contains stabs-in-ecoff entries. */
3202 /* Parse local symbols first */
3204 if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
3206 current_objfile = NULL;
3209 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
3215 (*swap_sym_in) (cur_bfd,
3216 (((char *) debug_info->external_sym)
3217 + (fh->isymBase + cur_sdx) * external_sym_size),
3219 name = debug_info->ss + fh->issBase + sh.iss;
3221 if (ECOFF_IS_STAB (&sh))
3223 int type_code = ECOFF_UNMARK_STAB (sh.index);
3225 /* We should never get non N_STAB symbols here, but they
3226 should be harmless, so keep process_one_symbol from
3227 complaining about them. */
3228 if (type_code & N_STAB)
3230 process_one_symbol (type_code, 0, valu, name,
3231 pst->section_offsets, pst->objfile);
3233 if (type_code == N_FUN)
3235 /* Make up special symbol to contain
3236 procedure specific info */
3237 struct mips_extra_func_info *e =
3238 ((struct mips_extra_func_info *)
3239 obstack_alloc (¤t_objfile->symbol_obstack,
3240 sizeof (struct mips_extra_func_info)));
3241 struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);
3243 memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));
3244 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
3245 SYMBOL_CLASS (s) = LOC_CONST;
3246 SYMBOL_TYPE (s) = mdebug_type_void;
3247 SYMBOL_VALUE (s) = (long) e;
3248 e->pdr.framereg = -1;
3249 add_symbol_to_list (s, &local_symbols);
3252 else if (sh.st == stLabel)
3254 if (sh.index == indexNil)
3256 /* This is what the gcc2_compiled and __gnu_compiled_*
3257 show up as. So don't complain. */
3262 /* Handle encoded stab line number. */
3263 valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT);
3264 record_line (current_subfile, sh.index, valu);
3267 else if (sh.st == stProc || sh.st == stStaticProc
3268 || sh.st == stStatic || sh.st == stEnd)
3269 /* These are generated by gcc-2.x, do not complain */
3272 complain (&stab_unknown_complaint, name);
3274 st = end_symtab (pst->texthigh, 0, 0, pst->objfile, SECT_OFF_TEXT);
3277 /* Sort the symbol table now, we are done adding symbols to it.
3278 We must do this before parse_procedure calls lookup_symbol. */
3279 sort_symtab_syms (st);
3281 /* There used to be a call to sort_blocks here, but this should not
3282 be necessary for stabs symtabs. And as sort_blocks modifies the
3283 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3284 it did the wrong thing if the first procedure in a file was
3285 generated via asm statements. */
3287 /* Fill in procedure info next. */
3291 struct cleanup *old_chain;
3297 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
3298 old_chain = make_cleanup (free, pr_block);
3300 pdr_ptr = ((char *) debug_info->external_pdr
3301 + fh->ipdFirst * external_pdr_size);
3302 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
3306 pdr_ptr += external_pdr_size, pdr_in++)
3308 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
3310 /* Determine lowest PDR address, the PDRs are not always
3312 if (pdr_in == pr_block)
3313 lowest_pdr_addr = pdr_in->adr;
3314 else if (pdr_in->adr < lowest_pdr_addr)
3315 lowest_pdr_addr = pdr_in->adr;
3319 pdr_in_end = pdr_in + fh->cpd;
3320 for (; pdr_in < pdr_in_end; pdr_in++)
3321 parse_procedure (pdr_in, st, lowest_pdr_addr, pst);
3323 do_cleanups (old_chain);
3328 /* This symbol table contains ordinary ecoff entries. */
3334 /* How many symbols will we need */
3335 /* FIXME, this does not count enum values. */
3336 f_max = pst->n_global_syms + pst->n_static_syms;
3340 st = new_symtab ("unknown", f_max, 0, pst->objfile);
3344 f_max += fh->csym + fh->cpd;
3345 maxlines = 2 * fh->cline;
3346 st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);
3348 /* The proper language was already determined when building
3349 the psymtab, use it. */
3350 st->language = PST_PRIVATE (pst)->pst_language;
3353 psymtab_language = st->language;
3355 lines = LINETABLE (st);
3357 /* Get a new lexical context */
3359 push_parse_stack ();
3360 top_stack->cur_st = st;
3361 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),
3363 BLOCK_START (top_stack->cur_block) = pst->textlow;
3364 BLOCK_END (top_stack->cur_block) = 0;
3365 top_stack->blocktype = stFile;
3366 top_stack->maxsyms = 2 * f_max;
3367 top_stack->cur_type = 0;
3368 top_stack->procadr = 0;
3369 top_stack->numargs = 0;
3370 found_ecoff_debugging_info = 0;
3377 /* Parse local symbols first */
3378 sym_ptr = ((char *) debug_info->external_sym
3379 + fh->isymBase * external_sym_size);
3380 sym_end = sym_ptr + fh->csym * external_sym_size;
3381 while (sym_ptr < sym_end)
3386 (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
3387 c = parse_symbol (&sh,
3388 debug_info->external_aux + fh->iauxBase,
3389 sym_ptr, fh->fBigendian, pst->section_offsets);
3390 sym_ptr += c * external_sym_size;
3393 /* Linenumbers. At the end, check if we can save memory.
3394 parse_lines has to look ahead an arbitrary number of PDR
3395 structures, so we swap them all first. */
3399 struct cleanup *old_chain;
3405 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
3407 old_chain = make_cleanup (free, pr_block);
3409 pdr_ptr = ((char *) debug_info->external_pdr
3410 + fh->ipdFirst * external_pdr_size);
3411 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
3415 pdr_ptr += external_pdr_size, pdr_in++)
3417 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
3419 /* Determine lowest PDR address, the PDRs are not always
3421 if (pdr_in == pr_block)
3422 lowest_pdr_addr = pdr_in->adr;
3423 else if (pdr_in->adr < lowest_pdr_addr)
3424 lowest_pdr_addr = pdr_in->adr;
3427 parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr);
3428 if (lines->nitems < fh->cline)
3429 lines = shrink_linetable (lines);
3431 /* Fill in procedure info next. */
3433 pdr_in_end = pdr_in + fh->cpd;
3434 for (; pdr_in < pdr_in_end; pdr_in++)
3435 parse_procedure (pdr_in, 0, lowest_pdr_addr, pst);
3437 do_cleanups (old_chain);
3441 LINETABLE (st) = lines;
3443 /* .. and our share of externals.
3444 XXX use the global list to speed up things here. how?
3445 FIXME, Maybe quit once we have found the right number of ext's? */
3446 top_stack->cur_st = st;
3447 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
3449 top_stack->blocktype = stFile;
3451 = (debug_info->symbolic_header.isymMax
3452 + debug_info->symbolic_header.ipdMax
3453 + debug_info->symbolic_header.iextMax);
3455 ext_ptr = PST_PRIVATE (pst)->extern_tab;
3456 for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
3457 parse_external (ext_ptr, fh->fBigendian, pst->section_offsets);
3459 /* If there are undefined symbols, tell the user.
3460 The alpha has an undefined symbol for every symbol that is
3461 from a shared library, so tell the user only if verbose is on. */
3462 if (info_verbose && n_undef_symbols)
3464 printf_filtered ("File %s contains %d unresolved references:",
3465 st->filename, n_undef_symbols);
3466 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3467 n_undef_vars, n_undef_procs, n_undef_labels);
3468 n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
3475 /* Sort the symbol table now, we are done adding symbols to it.*/
3476 sort_symtab_syms (st);
3481 /* Now link the psymtab and the symtab. */
3484 current_objfile = NULL;
3487 /* Ancillary parsing procedures. */
3489 /* Return 1 if the symbol pointed to by SH has a cross reference
3490 to an opaque aggregate type, else 0. */
3493 has_opaque_xref (fh, sh)
3502 if (sh->index == indexNil)
3505 ax = debug_info->external_aux + fh->iauxBase + sh->index;
3506 (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
3507 if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
3511 (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
3512 if (rn->rfd == 0xfff)
3513 rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
3521 /* Lookup the type at relative index RN. Return it in TPP
3522 if found and in any event come up with its name PNAME.
3523 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3524 Return value says how many aux symbols we ate. */
3527 cross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name)
3531 enum type_code type_code; /* Use to alloc new type if none is found. */
3543 struct mdebug_pending *pend;
3545 *tpp = (struct type *)NULL;
3547 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
3549 /* Escape index means 'the next one' */
3550 if (rn->rfd == 0xfff)
3553 rf = AUX_GET_ISYM (bigend, ax + 1);
3560 /* mips cc uses a rf of -1 for opaque struct definitions.
3561 Set TYPE_FLAG_STUB for these types so that check_typedef will
3562 resolve them if the struct gets defined in another compilation unit. */
3565 *pname = "<undefined>";
3566 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
3567 TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB;
3571 /* mips cc uses an escaped rn->index of 0 for struct return types
3572 of procedures that were compiled without -g. These will always remain
3574 if (rn->rfd == 0xfff && rn->index == 0)
3576 *pname = "<undefined>";
3580 /* Find the relative file descriptor and the symbol in it. */
3581 fh = get_rfd (fd, rf);
3582 xref_fd = fh - debug_info->fdr;
3584 if (rn->index >= fh->csym)
3586 /* File indirect entry is corrupt. */
3587 *pname = "<illegal>";
3588 complain (&bad_rfd_entry_complaint,
3589 sym_name, xref_fd, rn->index);
3593 /* If we have processed this symbol then we left a forwarding
3594 pointer to the type in the pending list. If not, we`ll put
3595 it in a list of pending types, to be processed later when
3596 the file will be. In any event, we collect the name for the
3599 esh = ((char *) debug_info->external_sym
3600 + ((fh->isymBase + rn->index)
3601 * debug_swap->external_sym_size));
3602 (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
3604 /* Make sure that this type of cross reference can be handled. */
3605 if ((sh.sc != scInfo
3606 || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
3607 && sh.st != stStruct && sh.st != stUnion
3608 && sh.st != stEnum))
3609 && (sh.st != stBlock || (sh.sc != scCommon && sh.sc != scSCommon)))
3611 /* File indirect entry is corrupt. */
3612 *pname = "<illegal>";
3613 complain (&bad_rfd_entry_complaint,
3614 sym_name, xref_fd, rn->index);
3618 *pname = debug_info->ss + fh->issBase + sh.iss;
3620 pend = is_pending_symbol (fh, esh);
3625 /* We have not yet seen this type. */
3627 if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
3631 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3633 a) forward declarations of structs/unions/enums which are not
3634 defined in this compilation unit.
3635 For these the type will be void. This is a bad design decision
3636 as cross referencing across compilation units is impossible
3637 due to the missing name.
3638 b) forward declarations of structs/unions/enums/typedefs which
3639 are defined later in this file or in another file in the same
3640 compilation unit. Irix5 cc uses a stIndirect symbol for this.
3641 Simply cross reference those again to get the true type.
3642 The forward references are not entered in the pending list and
3643 in the symbol table. */
3645 (*debug_swap->swap_tir_in) (bigend,
3646 &(debug_info->external_aux
3647 + fh->iauxBase + sh.index)->a_ti,
3649 if (tir.tq0 != tqNil)
3650 complain (&illegal_forward_tq0_complaint, sym_name);
3654 *tpp = init_type (type_code, 0, 0, (char *) NULL,
3656 *pname = "<undefined>";
3663 (debug_info->external_aux
3664 + fh->iauxBase + sh.index + 1),
3665 tpp, type_code, pname,
3666 fh->fBigendian, sym_name);
3670 /* Follow a forward typedef. This might recursively
3671 call cross_ref till we get a non typedef'ed type.
3672 FIXME: This is not correct behaviour, but gdb currently
3673 cannot handle typedefs without type copying. Type
3674 copying is impossible as we might have mutual forward
3675 references between two files and the copied type would not
3676 get filled in when we later parse its definition. */
3677 *tpp = parse_type (xref_fd,
3678 debug_info->external_aux + fh->iauxBase,
3682 debug_info->ss + fh->issBase + sh.iss);
3683 add_pending (fh, esh, *tpp);
3687 complain (&illegal_forward_bt_complaint, tir.bt, sym_name);
3688 *tpp = init_type (type_code, 0, 0, (char *) NULL,
3694 else if (sh.st == stTypedef)
3696 /* Parse the type for a normal typedef. This might recursively call
3697 cross_ref till we get a non typedef'ed type.
3698 FIXME: This is not correct behaviour, but gdb currently
3699 cannot handle typedefs without type copying. But type copying is
3700 impossible as we might have mutual forward references between
3701 two files and the copied type would not get filled in when
3702 we later parse its definition. */
3703 *tpp = parse_type (xref_fd,
3704 debug_info->external_aux + fh->iauxBase,
3708 debug_info->ss + fh->issBase + sh.iss);
3712 /* Cross reference to a struct/union/enum which is defined
3713 in another file in the same compilation unit but that file
3714 has not been parsed yet.
3715 Initialize the type only, it will be filled in when
3716 it's definition is parsed. */
3717 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
3719 add_pending (fh, esh, *tpp);
3722 /* We used one auxent normally, two if we got a "next one" rf. */
3727 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3728 keeping the symtab sorted */
3730 static struct symbol *
3731 mylookup_symbol (name, block, namespace, class)
3733 register struct block *block;
3734 enum namespace namespace;
3735 enum address_class class;
3737 register int bot, top, inc;
3738 register struct symbol *sym;
3741 top = BLOCK_NSYMS (block);
3745 sym = BLOCK_SYM (block, bot);
3746 if (SYMBOL_NAME (sym)[0] == inc
3747 && SYMBOL_NAMESPACE (sym) == namespace
3748 && SYMBOL_CLASS (sym) == class
3749 && strcmp (SYMBOL_NAME (sym), name) == 0)
3753 block = BLOCK_SUPERBLOCK (block);
3755 return mylookup_symbol (name, block, namespace, class);
3760 /* Add a new symbol S to a block B.
3761 Infrequently, we will need to reallocate the block to make it bigger.
3762 We only detect this case when adding to top_stack->cur_block, since
3763 that's the only time we know how big the block is. FIXME. */
3770 int nsyms = BLOCK_NSYMS (b)++;
3771 struct block *origb;
3772 struct parse_stack *stackp;
3774 if (b == top_stack->cur_block &&
3775 nsyms >= top_stack->maxsyms)
3777 complain (&block_overflow_complaint, SYMBOL_NAME (s));
3778 /* In this case shrink_block is actually grow_block, since
3779 BLOCK_NSYMS(b) is larger than its current size. */
3781 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
3783 /* Now run through the stack replacing pointers to the
3784 original block. shrink_block has already done this
3785 for the blockvector and BLOCK_FUNCTION. */
3786 for (stackp = top_stack; stackp; stackp = stackp->next)
3788 if (stackp->cur_block == origb)
3790 stackp->cur_block = b;
3791 stackp->maxsyms = BLOCK_NSYMS (b);
3795 BLOCK_SYM (b, nsyms) = s;
3798 /* Add a new block B to a symtab S */
3805 struct blockvector *bv = BLOCKVECTOR (s);
3807 bv = (struct blockvector *) xrealloc ((PTR) bv,
3808 (sizeof (struct blockvector)
3809 + BLOCKVECTOR_NBLOCKS (bv)
3810 * sizeof (bv->block)));
3811 if (bv != BLOCKVECTOR (s))
3812 BLOCKVECTOR (s) = bv;
3814 BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
3817 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3818 MIPS' linenumber encoding might need more than one byte
3819 to describe it, LAST is used to detect these continuation lines.
3821 Combining lines with the same line number seems like a bad idea.
3822 E.g: There could be a line number entry with the same line number after the
3823 prologue and GDB should not ignore it (this is a better way to find
3824 a prologue than mips_skip_prologue).
3825 But due to the compressed line table format there are line number entries
3826 for the same line which are needed to bridge the gap to the next
3827 line number entry. These entries have a bogus address info with them
3828 and we are unable to tell them from intended duplicate line number
3830 This is another reason why -ggdb debugging format is preferable. */
3833 add_line (lt, lineno, adr, last)
3834 struct linetable *lt;
3839 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3840 Change them to something sensible. */
3844 last = -2; /* make sure we record first line */
3846 if (last == lineno) /* skip continuation lines */
3849 lt->item[lt->nitems].line = lineno;
3850 lt->item[lt->nitems++].pc = adr << 2;
3854 /* Sorting and reordering procedures */
3856 /* Blocks with a smaller low bound should come first */
3859 compare_blocks (arg1, arg2)
3863 register int addr_diff;
3864 struct block **b1 = (struct block **) arg1;
3865 struct block **b2 = (struct block **) arg2;
3867 addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
3869 return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
3873 /* Sort the blocks of a symtab S.
3874 Reorder the blocks in the blockvector by code-address,
3875 as required by some MI search routines */
3881 struct blockvector *bv = BLOCKVECTOR (s);
3883 if (BLOCKVECTOR_NBLOCKS (bv) <= 2)
3886 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
3887 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
3888 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
3889 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
3893 * This is very unfortunate: normally all functions are compiled in
3894 * the order they are found, but if the file is compiled -O3 things
3895 * are very different. It would be nice to find a reliable test
3896 * to detect -O3 images in advance.
3898 if (BLOCKVECTOR_NBLOCKS (bv) > 3)
3899 qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
3900 BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
3901 sizeof (struct block *),
3905 register CORE_ADDR high = 0;
3906 register int i, j = BLOCKVECTOR_NBLOCKS (bv);
3908 for (i = FIRST_LOCAL_BLOCK; i < j; i++)
3909 if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
3910 high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
3911 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
3914 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
3915 BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
3917 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
3918 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
3919 BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
3920 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
3924 /* Constructor/restructor/destructor procedures */
3926 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3927 MAXSYMS and linenumbers MAXLINES we'll put in it */
3929 static struct symtab *
3930 new_symtab (name, maxsyms, maxlines, objfile)
3934 struct objfile *objfile;
3936 struct symtab *s = allocate_symtab (name, objfile);
3938 LINETABLE (s) = new_linetable (maxlines);
3940 /* All symtabs must have at least two blocks */
3941 BLOCKVECTOR (s) = new_bvect (2);
3942 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);
3943 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);
3944 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =
3945 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3947 s->free_code = free_linetable;
3952 /* Allocate a new partial_symtab NAME */
3954 static struct partial_symtab *
3955 new_psymtab (name, objfile, section_offsets)
3957 struct objfile *objfile;
3958 struct section_offsets *section_offsets;
3960 struct partial_symtab *psymtab;
3962 psymtab = allocate_psymtab (name, objfile);
3963 psymtab->section_offsets = section_offsets;
3965 /* Keep a backpointer to the file's symbols */
3967 psymtab->read_symtab_private = ((char *)
3968 obstack_alloc (&objfile->psymbol_obstack,
3969 sizeof (struct symloc)));
3970 memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc));
3971 CUR_BFD (psymtab) = cur_bfd;
3972 DEBUG_SWAP (psymtab) = debug_swap;
3973 DEBUG_INFO (psymtab) = debug_info;
3974 PENDING_LIST (psymtab) = pending_list;
3976 /* The way to turn this into a symtab is to call... */
3977 psymtab->read_symtab = mdebug_psymtab_to_symtab;
3982 /* Allocate a linetable array of the given SIZE. Since the struct
3983 already includes one item, we subtract one when calculating the
3984 proper size to allocate. */
3986 static struct linetable *
3987 new_linetable (size)
3990 struct linetable *l;
3992 size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);
3993 l = (struct linetable *) xmalloc (size);
3998 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
3999 I am not so sure about the 3.4 ones.
4001 Since the struct linetable already includes one item, we subtract one when
4002 calculating the proper size to allocate. */
4004 static struct linetable *
4005 shrink_linetable (lt)
4006 struct linetable *lt;
4009 return (struct linetable *) xrealloc ((PTR) lt,
4010 (sizeof (struct linetable)
4012 * sizeof (lt->item))));
4015 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4017 static struct blockvector *
4021 struct blockvector *bv;
4024 size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
4025 bv = (struct blockvector *) xzalloc (size);
4027 BLOCKVECTOR_NBLOCKS (bv) = nblocks;
4032 /* Allocate and zero a new block of MAXSYMS symbols */
4034 static struct block *
4038 int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
4040 return (struct block *) xzalloc (size);
4043 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4044 Shrink_block can also be used by add_symbol to grow a block. */
4046 static struct block *
4052 struct blockvector *bv = BLOCKVECTOR (s);
4055 /* Just reallocate it and fix references to the old one */
4057 new = (struct block *) xrealloc ((PTR) b,
4058 (sizeof (struct block)
4059 + ((BLOCK_NSYMS (b) - 1)
4060 * sizeof (struct symbol *))));
4062 /* Should chase pointers to old one. Fortunately, that`s just
4063 the block`s function and inferior blocks */
4064 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
4065 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4066 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
4067 if (BLOCKVECTOR_BLOCK (bv, i) == b)
4068 BLOCKVECTOR_BLOCK (bv, i) = new;
4069 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)
4070 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;
4074 /* Create a new symbol with printname NAME */
4076 static struct symbol *
4080 struct symbol *s = ((struct symbol *)
4081 obstack_alloc (¤t_objfile->symbol_obstack,
4082 sizeof (struct symbol)));
4084 memset ((PTR) s, 0, sizeof (*s));
4085 SYMBOL_NAME (s) = name;
4086 SYMBOL_LANGUAGE (s) = psymtab_language;
4087 SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack);
4091 /* Create a new type with printname NAME */
4093 static struct type *
4099 t = alloc_type (current_objfile);
4100 TYPE_NAME (t) = name;
4101 TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default;
4105 /* Read ECOFF debugging information from a BFD section. This is
4106 called from elfread.c. It parses the section into a
4107 ecoff_debug_info struct, and then lets the rest of the file handle
4111 elfmdebug_build_psymtabs (objfile, swap, sec, section_offsets)
4112 struct objfile *objfile;
4113 const struct ecoff_debug_swap *swap;
4115 struct section_offsets *section_offsets;
4117 bfd *abfd = objfile->obfd;
4118 struct ecoff_debug_info *info;
4120 info = ((struct ecoff_debug_info *)
4121 obstack_alloc (&objfile->psymbol_obstack,
4122 sizeof (struct ecoff_debug_info)));
4124 if (!(*swap->read_debug_info) (abfd, sec, info))
4125 error ("Error reading ECOFF debugging information: %s",
4126 bfd_errmsg (bfd_get_error ()));
4128 mdebug_build_psymtabs (objfile, swap, info, section_offsets);
4132 /* Things used for calling functions in the inferior.
4133 These functions are exported to our companion
4134 mips-tdep.c file and are here because they play
4135 with the symbol-table explicitly. */
4137 /* Sigtramp: make sure we have all the necessary information
4138 about the signal trampoline code. Since the official code
4139 from MIPS does not do so, we make up that information ourselves.
4140 If they fix the library (unlikely) this code will neutralize itself. */
4142 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4143 here because it calls functions defined in this file, but perhaps
4144 this could be handled in a better way. */
4151 struct block *b, *b0 = NULL;
4153 sigtramp_address = -1;
4155 /* We have to handle the following cases here:
4156 a) The Mips library has a sigtramp label within sigvec.
4157 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4158 s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
4161 b0 = SYMBOL_BLOCK_VALUE (s);
4162 s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
4166 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4167 s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
4170 /* But maybe this program uses its own version of sigvec */
4174 /* Did we or MIPSco fix the library ? */
4175 if (SYMBOL_CLASS (s) == LOC_BLOCK)
4177 sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
4178 sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
4182 sigtramp_address = SYMBOL_VALUE (s);
4183 sigtramp_end = sigtramp_address + 0x88; /* black magic */
4185 /* But what symtab does it live in ? */
4186 st = find_pc_symtab (SYMBOL_VALUE (s));
4189 * Ok, there goes the fix: turn it into a procedure, with all the
4190 * needed info. Note we make it a nested procedure of sigvec,
4191 * which is the way the (assembly) code is actually written.
4193 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
4194 SYMBOL_CLASS (s) = LOC_BLOCK;
4195 SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
4197 TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void;
4199 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4201 SYMBOL_BLOCK_VALUE (s) = b;
4202 BLOCK_START (b) = sigtramp_address;
4203 BLOCK_END (b) = sigtramp_end;
4204 BLOCK_FUNCTION (b) = s;
4205 BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
4209 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4211 struct mips_extra_func_info *e =
4212 ((struct mips_extra_func_info *)
4213 xzalloc (sizeof (struct mips_extra_func_info)));
4215 e->numargs = 0; /* the kernel thinks otherwise */
4216 e->pdr.frameoffset = 32;
4217 e->pdr.framereg = SP_REGNUM;
4218 /* Note that setting pcreg is no longer strictly necessary as
4219 mips_frame_saved_pc is now aware of signal handler frames. */
4220 e->pdr.pcreg = PC_REGNUM;
4221 e->pdr.regmask = -2;
4222 /* Offset to saved r31, in the sigtramp case the saved registers
4223 are above the frame in the sigcontext.
4224 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4225 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4226 and 32 * 4 bytes for the floating point registers. */
4227 e->pdr.regoffset = 4 + 12 + 31 * 4;
4228 e->pdr.fregmask = -1;
4229 /* Offset to saved f30 (first saved *double* register). */
4230 e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4;
4231 e->pdr.isym = (long) s;
4232 e->pdr.adr = sigtramp_address;
4234 current_objfile = st->objfile; /* Keep new_symbol happy */
4235 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
4236 SYMBOL_VALUE (s) = (long) e;
4237 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
4238 SYMBOL_CLASS (s) = LOC_CONST;
4239 SYMBOL_TYPE (s) = mdebug_type_void;
4240 current_objfile = NULL;
4243 BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s;
4247 _initialize_mdebugread ()
4250 init_type (TYPE_CODE_VOID, 1,
4252 "void", (struct objfile *) NULL);
4254 init_type (TYPE_CODE_INT, 1,
4256 "char", (struct objfile *) NULL);
4257 mdebug_type_unsigned_char =
4258 init_type (TYPE_CODE_INT, 1,
4260 "unsigned char", (struct objfile *) NULL);
4262 init_type (TYPE_CODE_INT, 2,
4264 "short", (struct objfile *) NULL);
4265 mdebug_type_unsigned_short =
4266 init_type (TYPE_CODE_INT, 2,
4268 "unsigned short", (struct objfile *) NULL);
4269 mdebug_type_int_32 =
4270 init_type (TYPE_CODE_INT, 4,
4272 "int", (struct objfile *) NULL);
4273 mdebug_type_unsigned_int_32 =
4274 init_type (TYPE_CODE_INT, 4,
4276 "unsigned int", (struct objfile *) NULL);
4277 mdebug_type_int_64 =
4278 init_type (TYPE_CODE_INT, 8,
4280 "int", (struct objfile *) NULL);
4281 mdebug_type_unsigned_int_64 =
4282 init_type (TYPE_CODE_INT, 8,
4284 "unsigned int", (struct objfile *) NULL);
4285 mdebug_type_long_32 =
4286 init_type (TYPE_CODE_INT, 4,
4288 "long", (struct objfile *) NULL);
4289 mdebug_type_unsigned_long_32 =
4290 init_type (TYPE_CODE_INT, 4,
4292 "unsigned long", (struct objfile *) NULL);
4293 mdebug_type_long_64 =
4294 init_type (TYPE_CODE_INT, 8,
4296 "long", (struct objfile *) NULL);
4297 mdebug_type_unsigned_long_64 =
4298 init_type (TYPE_CODE_INT, 8,
4300 "unsigned long", (struct objfile *) NULL);
4301 mdebug_type_long_long_64 =
4302 init_type (TYPE_CODE_INT, 8,
4304 "long long", (struct objfile *) NULL);
4305 mdebug_type_unsigned_long_long_64 =
4306 init_type (TYPE_CODE_INT, 8,
4308 "unsigned long long", (struct objfile *) NULL);
4309 mdebug_type_adr_32 =
4310 init_type (TYPE_CODE_PTR, 4,
4312 "adr_32", (struct objfile *) NULL);
4313 TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void;
4314 mdebug_type_adr_64 =
4315 init_type (TYPE_CODE_PTR, 8,
4317 "adr_64", (struct objfile *) NULL);
4318 TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void;
4320 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4322 "float", (struct objfile *) NULL);
4323 mdebug_type_double =
4324 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4326 "double", (struct objfile *) NULL);
4327 mdebug_type_complex =
4328 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4330 "complex", (struct objfile *) NULL);
4331 TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float;
4332 mdebug_type_double_complex =
4333 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4335 "double complex", (struct objfile *) NULL);
4336 TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double;
4338 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4340 mdebug_type_string =
4341 init_type (TYPE_CODE_STRING,
4342 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4344 (struct objfile *) NULL);
4346 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4347 good? Would we be better off with TYPE_CODE_ERROR? Should
4348 TYPE_CODE_ERROR print things in hex if it knows the size? */
4349 mdebug_type_fixed_dec =
4350 init_type (TYPE_CODE_INT,
4351 TARGET_INT_BIT / TARGET_CHAR_BIT,
4353 (struct objfile *) NULL);
4355 mdebug_type_float_dec =
4356 init_type (TYPE_CODE_ERROR,
4357 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4358 0, "floating decimal",
4359 (struct objfile *) NULL);
4361 nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0,
4362 "<function, no debug info>", NULL);
4363 TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int;
4364 nodebug_var_symbol_type =
4365 init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0,
4366 "<variable, no debug info>", NULL);