1 /* Read a symbol table in ECOFF format (Third-Eye).
2 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
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"
54 /* These are needed if the tm.h file does not contain the necessary
55 mips specific definitions. */
57 #ifndef MIPS_EFI_SYMBOL_NAME
58 #define MIPS_EFI_SYMBOL_NAME "__GDB_EFI_INFO__"
60 #include "coff/symconst.h"
61 typedef struct mips_extra_func_info {
64 } *mips_extra_func_info_t;
71 #include <sys/types.h>
74 #include <sys/param.h>
77 #include "gdb_string.h"
79 #include "gdb-stabs.h"
83 #include "coff/ecoff.h" /* COFF-like aspects of ecoff files */
85 #include "libaout.h" /* Private BFD a.out information. */
86 #include "aout/aout64.h"
87 #include "aout/stab_gnu.h" /* STABS information */
89 #include "expression.h"
90 #include "language.h" /* Needed inside partial-stab.h */
92 /* Provide a default mapping from a ecoff register number to a gdb REGNUM. */
93 #ifndef ECOFF_REG_TO_REGNUM
94 #define ECOFF_REG_TO_REGNUM(num) (num)
97 /* We put a pointer to this structure in the read_symtab_private field
102 /* Index of the FDR that this psymtab represents. */
104 /* The BFD that the psymtab was created from. */
106 const struct ecoff_debug_swap *debug_swap;
107 struct ecoff_debug_info *debug_info;
108 struct mdebug_pending **pending_list;
109 /* Pointer to external symbols for this file. */
111 /* Size of extern_tab. */
113 enum language pst_language;
116 #define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
117 #define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
118 #define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
119 #define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
120 #define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
121 #define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
123 /* Things we import explicitly from other modules */
125 extern int info_verbose;
127 /* Various complaints about symbol reading that don't abort the process */
129 static struct complaint bad_file_number_complaint =
130 {"bad file number %d", 0, 0};
132 static struct complaint index_complaint =
133 {"bad aux index at symbol %s", 0, 0};
135 static struct complaint aux_index_complaint =
136 {"bad proc end in aux found from symbol %s", 0, 0};
138 static struct complaint block_index_complaint =
139 {"bad aux index at block symbol %s", 0, 0};
141 static struct complaint unknown_ext_complaint =
142 {"unknown external symbol %s", 0, 0};
144 static struct complaint unknown_sym_complaint =
145 {"unknown local symbol %s", 0, 0};
147 static struct complaint unknown_st_complaint =
148 {"with type %d", 0, 0};
150 static struct complaint block_overflow_complaint =
151 {"block containing %s overfilled", 0, 0};
153 static struct complaint basic_type_complaint =
154 {"cannot map ECOFF basic type 0x%x for %s", 0, 0};
156 static struct complaint unknown_type_qual_complaint =
157 {"unknown type qualifier 0x%x", 0, 0};
159 static struct complaint array_index_type_complaint =
160 {"illegal array index type for %s, assuming int", 0, 0};
162 static struct complaint bad_tag_guess_complaint =
163 {"guessed tag type of %s incorrectly", 0, 0};
165 static struct complaint block_member_complaint =
166 {"declaration block contains unhandled symbol type %d", 0, 0};
168 static struct complaint stEnd_complaint =
169 {"stEnd with storage class %d not handled", 0, 0};
171 static struct complaint unknown_mdebug_symtype_complaint =
172 {"unknown symbol type 0x%x", 0, 0};
174 static struct complaint stab_unknown_complaint =
175 {"unknown stabs symbol %s", 0, 0};
177 static struct complaint pdr_for_nonsymbol_complaint =
178 {"PDR for %s, but no symbol", 0, 0};
180 static struct complaint pdr_static_symbol_complaint =
181 {"can't handle PDR for static proc at 0x%lx", 0, 0};
183 static struct complaint bad_setjmp_pdr_complaint =
184 {"fixing bad setjmp PDR from libc", 0, 0};
186 static struct complaint bad_fbitfield_complaint =
187 {"can't handle TIR fBitfield for %s", 0, 0};
189 static struct complaint bad_continued_complaint =
190 {"illegal TIR continued for %s", 0, 0};
192 static struct complaint bad_rfd_entry_complaint =
193 {"bad rfd entry for %s: file %d, index %d", 0, 0};
195 static struct complaint unexpected_type_code_complaint =
196 {"unexpected type code for %s", 0, 0};
198 static struct complaint unable_to_cross_ref_complaint =
199 {"unable to cross ref btTypedef for %s", 0, 0};
201 static struct complaint bad_indirect_xref_complaint =
202 {"unable to cross ref btIndirect for %s", 0, 0};
204 static struct complaint illegal_forward_tq0_complaint =
205 {"illegal tq0 in forward typedef for %s", 0, 0};
207 static struct complaint illegal_forward_bt_complaint =
208 {"illegal bt %d in forward typedef for %s", 0, 0};
210 static struct complaint bad_linetable_guess_complaint =
211 {"guessed size of linetable for %s incorrectly", 0, 0};
213 static struct complaint bad_ext_ifd_complaint =
214 {"bad ifd for external symbol: %d (max %d)", 0, 0};
216 static struct complaint bad_ext_iss_complaint =
217 {"bad iss for external symbol: %ld (max %ld)", 0, 0};
219 /* Macros and extra defs */
221 /* Puns: hard to find whether -g was used and how */
223 #define MIN_GLEVEL GLEVEL_0
224 #define compare_glevel(a,b) \
225 (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
226 ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
228 /* Things that really are local to this module */
230 /* Remember what we deduced to be the source language of this psymtab. */
232 static enum language psymtab_language = language_unknown;
238 /* How to parse debugging information for CUR_BFD. */
240 static const struct ecoff_debug_swap *debug_swap;
242 /* Pointers to debugging information for CUR_BFD. */
244 static struct ecoff_debug_info *debug_info;
246 /* Pointer to current file decriptor record, and its index */
251 /* Index of current symbol */
255 /* Note how much "debuggable" this image is. We would like
256 to see at least one FDR with full symbols */
261 /* When examining .o files, report on undefined symbols */
263 static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
265 /* Pseudo symbol to use when putting stabs into the symbol table. */
267 static char stabs_symbol[] = STABS_SYMBOL;
269 /* Types corresponding to mdebug format bt* basic types. */
271 static struct type *mdebug_type_void;
272 static struct type *mdebug_type_char;
273 static struct type *mdebug_type_short;
274 static struct type *mdebug_type_int_32;
275 #define mdebug_type_int mdebug_type_int_32
276 static struct type *mdebug_type_int_64;
277 static struct type *mdebug_type_long_32;
278 static struct type *mdebug_type_long_64;
279 static struct type *mdebug_type_long_long_64;
280 static struct type *mdebug_type_unsigned_char;
281 static struct type *mdebug_type_unsigned_short;
282 static struct type *mdebug_type_unsigned_int_32;
283 static struct type *mdebug_type_unsigned_int_64;
284 static struct type *mdebug_type_unsigned_long_32;
285 static struct type *mdebug_type_unsigned_long_64;
286 static struct type *mdebug_type_unsigned_long_long_64;
287 static struct type *mdebug_type_adr_32;
288 static struct type *mdebug_type_adr_64;
289 static struct type *mdebug_type_float;
290 static struct type *mdebug_type_double;
291 static struct type *mdebug_type_complex;
292 static struct type *mdebug_type_double_complex;
293 static struct type *mdebug_type_fixed_dec;
294 static struct type *mdebug_type_float_dec;
295 static struct type *mdebug_type_string;
297 /* Types for symbols from files compiled without debugging info. */
299 static struct type *nodebug_func_symbol_type;
300 static struct type *nodebug_var_symbol_type;
302 /* Nonzero if we have seen ecoff debugging info for a file. */
304 static int found_ecoff_debugging_info;
306 /* Forward declarations */
309 upgrade_type PARAMS ((int, struct type **, int, union aux_ext *, int, char *));
312 parse_partial_symbols PARAMS ((struct objfile *,
313 struct section_offsets *));
316 *get_rfd PARAMS ((int, int));
319 has_opaque_xref PARAMS ((FDR *, SYMR *));
322 cross_ref PARAMS ((int, union aux_ext *, struct type **, enum type_code,
323 char **, int, char *));
325 static struct symbol *
326 new_symbol PARAMS ((char *));
329 new_type PARAMS ((char *));
331 static struct block *
332 new_block PARAMS ((int));
334 static struct symtab *
335 new_symtab PARAMS ((char *, int, int, struct objfile *));
337 static struct linetable *
338 new_linetable PARAMS ((int));
340 static struct blockvector *
341 new_bvect PARAMS ((int));
344 parse_symbol PARAMS ((SYMR *, union aux_ext *, char *, int, struct section_offsets *));
347 parse_type PARAMS ((int, union aux_ext *, unsigned int, int *, int, char *));
349 static struct symbol *
350 mylookup_symbol PARAMS ((char *, struct block *, namespace_enum,
351 enum address_class));
353 static struct block *
354 shrink_block PARAMS ((struct block *, struct symtab *));
357 xzalloc PARAMS ((unsigned int));
360 sort_blocks PARAMS ((struct symtab *));
363 compare_blocks PARAMS ((const void *, const void *));
365 static struct partial_symtab *
366 new_psymtab PARAMS ((char *, struct objfile *, struct section_offsets *));
369 psymtab_to_symtab_1 PARAMS ((struct partial_symtab *, char *));
372 add_block PARAMS ((struct block *, struct symtab *));
375 add_symbol PARAMS ((struct symbol *, struct block *));
378 add_line PARAMS ((struct linetable *, int, CORE_ADDR, int));
380 static struct linetable *
381 shrink_linetable PARAMS ((struct linetable *));
384 handle_psymbol_enumerators PARAMS ((struct objfile *, FDR *, int, CORE_ADDR));
387 mdebug_next_symbol_text PARAMS ((struct objfile *));
389 /* Address bounds for the signal trampoline in inferior, if any */
391 CORE_ADDR sigtramp_address, sigtramp_end;
393 /* Allocate zeroed memory */
399 PTR p = xmalloc (size);
405 /* Exported procedure: Builds a symtab from the PST partial one.
406 Restores the environment in effect when PST was created, delegates
407 most of the work to an ancillary procedure, and sorts
408 and reorders the symtab list at the end */
411 mdebug_psymtab_to_symtab (pst)
412 struct partial_symtab *pst;
420 printf_filtered ("Reading in symbols for %s...", pst->filename);
421 gdb_flush (gdb_stdout);
424 next_symbol_text_func = mdebug_next_symbol_text;
426 psymtab_to_symtab_1 (pst, pst->filename);
428 /* Match with global symbols. This only needs to be done once,
429 after all of the symtabs and dependencies have been read in. */
430 scan_file_globals (pst->objfile);
433 printf_filtered ("done.\n");
436 /* File-level interface functions */
438 /* Find a file descriptor given its index RF relative to a file CF */
448 fdrs = debug_info->fdr;
450 /* Object files do not have the RFD table, all refs are absolute */
453 (*debug_swap->swap_rfd_in) (cur_bfd,
454 ((char *) debug_info->external_rfd
456 * debug_swap->external_rfd_size)),
461 /* Return a safer print NAME for a file descriptor */
468 return "<stripped file>";
471 return debug_info->ss + f->issBase + f->rss;
475 /* Read in and parse the symtab of the file OBJFILE. Symbols from
476 different sections are relocated via the SECTION_OFFSETS. */
479 mdebug_build_psymtabs (objfile, swap, info, section_offsets)
480 struct objfile *objfile;
481 const struct ecoff_debug_swap *swap;
482 struct ecoff_debug_info *info;
483 struct section_offsets *section_offsets;
485 cur_bfd = objfile->obfd;
489 /* Make sure all the FDR information is swapped in. */
490 if (info->fdr == (FDR *) NULL)
496 info->fdr = (FDR *) obstack_alloc (&objfile->psymbol_obstack,
497 (info->symbolic_header.ifdMax
499 fdr_src = info->external_fdr;
501 + info->symbolic_header.ifdMax * swap->external_fdr_size);
503 for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)
504 (*swap->swap_fdr_in) (objfile->obfd, fdr_src, fdr_ptr);
507 parse_partial_symbols (objfile, section_offsets);
510 /* Check to make sure file was compiled with -g. If not, warn the
511 user of this limitation. */
512 if (compare_glevel (max_glevel, GLEVEL_2) < 0)
514 if (max_gdbinfo == 0)
515 printf_unfiltered ("\n%s not compiled with -g, debugging support is limited.\n",
517 printf_unfiltered ("You should compile with -g2 or -g3 for best debugging support.\n");
518 gdb_flush (gdb_stdout);
523 /* Local utilities */
525 /* Map of FDR indexes to partial symtabs */
529 struct partial_symtab *pst; /* the psymtab proper */
530 long n_globals; /* exported globals (external symbols) */
531 long globals_offset; /* cumulative */
535 /* Utility stack, used to nest procedures and blocks properly.
536 It is a doubly linked list, to avoid too many alloc/free.
537 Since we might need it quite a few times it is NOT deallocated
540 static struct parse_stack
542 struct parse_stack *next, *prev;
543 struct symtab *cur_st; /* Current symtab. */
544 struct block *cur_block; /* Block in it. */
546 /* What are we parsing. stFile, or stBlock are for files and
547 blocks. stProc or stStaticProc means we have seen the start of a
548 procedure, but not the start of the block within in. When we see
549 the start of that block, we change it to stNil, without pushing a
550 new block, i.e. stNil means both a procedure and a block. */
554 int maxsyms; /* Max symbols in this block. */
555 struct type *cur_type; /* Type we parse fields for. */
556 int cur_field; /* Field number in cur_type. */
557 CORE_ADDR procadr; /* Start addres of this procedure */
558 int numargs; /* Its argument count */
561 *top_stack; /* Top stack ptr */
564 /* Enter a new lexical context */
569 struct parse_stack *new;
571 /* Reuse frames if possible */
572 if (top_stack && top_stack->prev)
573 new = top_stack->prev;
575 new = (struct parse_stack *) xzalloc (sizeof (struct parse_stack));
576 /* Initialize new frame with previous content */
579 register struct parse_stack *prev = new->prev;
582 top_stack->prev = new;
584 new->next = top_stack;
589 /* Exit a lexical context */
597 top_stack = top_stack->next;
601 /* Cross-references might be to things we haven't looked at
602 yet, e.g. type references. To avoid too many type
603 duplications we keep a quick fixup table, an array
604 of lists of references indexed by file descriptor */
606 struct mdebug_pending
608 struct mdebug_pending *next; /* link */
609 char *s; /* the unswapped symbol */
610 struct type *t; /* its partial type descriptor */
614 /* The pending information is kept for an entire object file, and used
615 to be in the sym_private field. I took it out when I split
616 mdebugread from mipsread, because this might not be the only type
617 of symbols read from an object file. Instead, we allocate the
618 pending information table when we create the partial symbols, and
619 we store a pointer to the single table in each psymtab. */
621 static struct mdebug_pending **pending_list;
623 /* Check whether we already saw symbol SH in file FH */
625 static struct mdebug_pending *
626 is_pending_symbol (fh, sh)
630 int f_idx = fh - debug_info->fdr;
631 register struct mdebug_pending *p;
633 /* Linear search is ok, list is typically no more than 10 deep */
634 for (p = pending_list[f_idx]; p; p = p->next)
640 /* Add a new symbol SH of type T */
643 add_pending (fh, sh, t)
648 int f_idx = fh - debug_info->fdr;
649 struct mdebug_pending *p = is_pending_symbol (fh, sh);
651 /* Make sure we do not make duplicates */
654 p = ((struct mdebug_pending *)
655 obstack_alloc (¤t_objfile->psymbol_obstack,
656 sizeof (struct mdebug_pending)));
659 p->next = pending_list[f_idx];
660 pending_list[f_idx] = p;
665 /* Parsing Routines proper. */
667 /* Parse a single symbol. Mostly just make up a GDB symbol for it.
668 For blocks, procedures and types we open a new lexical context.
669 This is basically just a big switch on the symbol's type. Argument
670 AX is the base pointer of aux symbols for this file (fh->iauxBase).
671 EXT_SH points to the unswapped symbol, which is needed for struct,
672 union, etc., types; it is NULL for an EXTR. BIGEND says whether
673 aux symbols are big-endian or little-endian. Return count of
674 SYMR's handled (normally one). */
677 parse_symbol (sh, ax, ext_sh, bigend, section_offsets)
682 struct section_offsets *section_offsets;
684 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
685 void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *)) =
686 debug_swap->swap_sym_in;
690 struct mdebug_pending *pend;
694 enum address_class class;
696 long svalue = sh->value;
699 if (ext_sh == (char *) NULL)
700 name = debug_info->ssext + sh->iss;
702 name = debug_info->ss + cur_fdr->issBase + sh->iss;
707 /* Do not relocate relative values.
708 The value of a stEnd symbol is the displacement from the
709 corresponding start symbol value.
710 The value of a stBlock symbol is the displacement from the
711 procedure address. */
712 if (sh->st != stEnd && sh->st != stBlock)
713 sh->value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
720 sh->value += ANOFFSET (section_offsets, SECT_OFF_DATA);
724 sh->value += ANOFFSET (section_offsets, SECT_OFF_BSS);
733 case stGlobal: /* external symbol, goes into global block */
735 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
737 s = new_symbol (name);
738 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
741 case stStatic: /* static data, goes into current block. */
743 b = top_stack->cur_block;
744 s = new_symbol (name);
745 if (sh->sc == scCommon || sh->sc == scSCommon)
747 /* It is a FORTRAN common block. At least for SGI Fortran the
748 address is not in the symbol; we need to fix it later in
749 scan_file_globals. */
750 int bucket = hashname (SYMBOL_NAME (s));
751 SYMBOL_VALUE_CHAIN (s) = global_sym_chain[bucket];
752 global_sym_chain[bucket] = s;
755 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
758 case stLocal: /* local variable, goes into current block */
759 if (sh->sc == scRegister)
761 class = LOC_REGISTER;
762 svalue = ECOFF_REG_TO_REGNUM (svalue);
766 b = top_stack->cur_block;
767 s = new_symbol (name);
768 SYMBOL_VALUE (s) = svalue;
770 data: /* Common code for symbols describing data */
771 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
772 SYMBOL_CLASS (s) = class;
775 /* Type could be missing if file is compiled without debugging info. */
776 if (sh->sc == scUndefined || sh->sc == scNil || sh->index == indexNil)
777 SYMBOL_TYPE (s) = nodebug_var_symbol_type;
779 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
780 /* Value of a data symbol is its memory address */
783 case stParam: /* arg to procedure, goes into current block */
785 found_ecoff_debugging_info = 1;
786 top_stack->numargs++;
788 /* Special GNU C++ name. */
789 if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0)
790 name = "this"; /* FIXME, not alloc'd in obstack */
791 s = new_symbol (name);
793 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
797 /* Pass by value in register. */
798 SYMBOL_CLASS(s) = LOC_REGPARM;
799 svalue = ECOFF_REG_TO_REGNUM (svalue);
802 /* Pass by reference on stack. */
803 SYMBOL_CLASS(s) = LOC_REF_ARG;
806 /* Pass by reference in register. */
807 SYMBOL_CLASS(s) = LOC_REGPARM_ADDR;
808 svalue = ECOFF_REG_TO_REGNUM (svalue);
811 /* Pass by value on stack. */
812 SYMBOL_CLASS(s) = LOC_ARG;
815 SYMBOL_VALUE (s) = svalue;
816 SYMBOL_TYPE (s) = parse_type (cur_fd, ax, sh->index, 0, bigend, name);
817 add_symbol (s, top_stack->cur_block);
820 case stLabel: /* label, goes into current block */
821 s = new_symbol (name);
822 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE; /* so that it can be used */
823 SYMBOL_CLASS (s) = LOC_LABEL; /* but not misused */
824 SYMBOL_VALUE_ADDRESS (s) = (CORE_ADDR) sh->value;
825 SYMBOL_TYPE (s) = mdebug_type_int;
826 add_symbol (s, top_stack->cur_block);
829 case stProc: /* Procedure, usually goes into global block */
830 case stStaticProc: /* Static procedure, goes into current block */
831 s = new_symbol (name);
832 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
833 SYMBOL_CLASS (s) = LOC_BLOCK;
834 /* Type of the return value */
835 if (sh->sc == scUndefined || sh->sc == scNil)
838 t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
839 b = top_stack->cur_block;
840 if (sh->st == stProc)
842 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
843 /* The next test should normally be true, but provides a
844 hook for nested functions (which we don't want to make
846 if (b == BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))
847 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
848 /* Irix 5 sometimes has duplicate names for the same
849 function. We want to add such names up at the global
850 level, not as a nested function. */
851 else if (sh->value == top_stack->procadr)
852 b = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
856 /* Make a type for the procedure itself */
857 SYMBOL_TYPE (s) = lookup_function_type (t);
859 /* Create and enter a new lexical context */
860 b = new_block (top_stack->maxsyms);
861 SYMBOL_BLOCK_VALUE (s) = b;
862 BLOCK_FUNCTION (b) = s;
863 BLOCK_START (b) = BLOCK_END (b) = sh->value;
864 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
865 add_block (b, top_stack->cur_st);
867 /* Not if we only have partial info */
868 if (sh->sc == scUndefined || sh->sc == scNil)
872 top_stack->cur_block = b;
873 top_stack->blocktype = sh->st;
874 top_stack->cur_type = SYMBOL_TYPE (s);
875 top_stack->cur_field = -1;
876 top_stack->procadr = sh->value;
877 top_stack->numargs = 0;
880 /* Beginning of code for structure, union, and enum definitions.
881 They all share a common set of local variables, defined here. */
883 enum type_code type_code;
889 case stStruct: /* Start a block defining a struct type */
890 type_code = TYPE_CODE_STRUCT;
891 goto structured_common;
893 case stUnion: /* Start a block defining a union type */
894 type_code = TYPE_CODE_UNION;
895 goto structured_common;
897 case stEnum: /* Start a block defining an enum type */
898 type_code = TYPE_CODE_ENUM;
899 goto structured_common;
901 case stBlock: /* Either a lexical block, or some type */
902 if (sh->sc != scInfo && sh->sc != scCommon && sh->sc != scSCommon)
903 goto case_stBlock_code; /* Lexical block */
905 type_code = TYPE_CODE_UNDEF; /* We have a type. */
907 /* Common code for handling struct, union, enum, and/or as-yet-
908 unknown-type blocks of info about structured data. `type_code'
909 has been set to the proper TYPE_CODE, if we know it. */
911 found_ecoff_debugging_info = 1;
913 top_stack->blocktype = stBlock;
915 /* First count the number of fields and the highest value. */
918 for (ext_tsym = ext_sh + external_sym_size;
920 ext_tsym += external_sym_size)
924 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
932 if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
933 /* If the type of the member is Nil (or Void),
934 without qualifiers, assume the tag is an
936 Alpha cc -migrate enums are recognized by a zero
937 index and a zero symbol value. */
938 if (tsym.index == indexNil
939 || (tsym.index == 0 && sh->value == 0))
940 type_code = TYPE_CODE_ENUM;
943 (*debug_swap->swap_tir_in) (bigend,
944 &ax[tsym.index].a_ti,
946 if ((tir.bt == btNil || tir.bt == btVoid)
948 type_code = TYPE_CODE_ENUM;
951 if (tsym.value > max_value)
952 max_value = tsym.value;
961 /* This is a no-op; is it trying to tell us something
962 we should be checking? */
963 if (tsym.sc == scVariant); /*UNIMPLEMENTED*/
967 /* This is something like a struct within a
968 struct. Skip over the fields of the inner
969 struct. The -1 is because the for loop will
970 increment ext_tsym. */
971 ext_tsym = ((char *) debug_info->external_sym
972 + ((cur_fdr->isymBase + tsym.index - 1)
973 * external_sym_size));
979 /* mips cc puts out a typedef for struct x if it is not yet
980 defined when it encounters
981 struct y { struct x *xp; };
986 /* Irix5 cc puts out a stIndirect for struct x if it is not
987 yet defined when it encounters
988 struct y { struct x *xp; };
993 complain (&block_member_complaint, tsym.st);
998 /* In an stBlock, there is no way to distinguish structs,
999 unions, and enums at this point. This is a bug in the
1000 original design (that has been fixed with the recent
1001 addition of the stStruct, stUnion, and stEnum symbol
1002 types.) The way you can tell is if/when you see a variable
1003 or field of that type. In that case the variable's type
1004 (in the AUX table) says if the type is struct, union, or
1005 enum, and points back to the stBlock here. So you can
1006 patch the tag kind up later - but only if there actually is
1007 a variable or field of that type.
1009 So until we know for sure, we will guess at this point.
1011 If the first member has index==indexNil or a void type,
1012 assume we have an enumeration.
1013 Otherwise, if there is more than one member, and all
1014 the members have offset 0, assume we have a union.
1015 Otherwise, assume we have a struct.
1017 The heuristic could guess wrong in the case of of an
1018 enumeration with no members or a union with one (or zero)
1019 members, or when all except the last field of a struct have
1020 width zero. These are uncommon and/or illegal situations,
1021 and in any case guessing wrong probably doesn't matter
1024 But if we later do find out we were wrong, we fixup the tag
1025 kind. Members of an enumeration must be handled
1026 differently from struct/union fields, and that is harder to
1027 patch up, but luckily we shouldn't need to. (If there are
1028 any enumeration members, we can tell for sure it's an enum
1031 if (type_code == TYPE_CODE_UNDEF)
1032 if (nfields > 1 && max_value == 0)
1033 type_code = TYPE_CODE_UNION;
1035 type_code = TYPE_CODE_STRUCT;
1037 /* Create a new type or use the pending type. */
1038 pend = is_pending_symbol (cur_fdr, ext_sh);
1039 if (pend == (struct mdebug_pending *) NULL)
1041 t = new_type (NULL);
1042 add_pending (cur_fdr, ext_sh, t);
1047 /* Do not set the tag name if it is a compiler generated tag name
1048 (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
1049 Alpha cc puts out an sh->iss of zero for those. */
1050 if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
1051 TYPE_TAG_NAME (t) = NULL;
1053 TYPE_TAG_NAME (t) = obconcat (¤t_objfile->symbol_obstack,
1056 TYPE_CODE (t) = type_code;
1057 TYPE_LENGTH (t) = sh->value;
1058 TYPE_NFIELDS (t) = nfields;
1059 TYPE_FIELDS (t) = f = ((struct field *)
1061 nfields * sizeof (struct field)));
1063 if (type_code == TYPE_CODE_ENUM)
1065 int unsigned_enum = 1;
1067 /* This is a non-empty enum. */
1069 /* DEC c89 has the number of enumerators in the sh.value field,
1070 not the type length, so we have to compensate for that
1071 incompatibility quirk.
1072 This might do the wrong thing for an enum with one or two
1073 enumerators and gcc -gcoff -fshort-enums, but these cases
1074 are hopefully rare enough.
1075 Alpha cc -migrate has a sh.value field of zero, we adjust
1077 if (TYPE_LENGTH (t) == TYPE_NFIELDS (t)
1078 || TYPE_LENGTH (t) == 0)
1079 TYPE_LENGTH (t) = TARGET_INT_BIT / HOST_CHAR_BIT;
1080 for (ext_tsym = ext_sh + external_sym_size;
1082 ext_tsym += external_sym_size)
1085 struct symbol *enum_sym;
1087 (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
1089 if (tsym.st != stMember)
1092 f->bitpos = tsym.value;
1094 f->name = debug_info->ss + cur_fdr->issBase + tsym.iss;
1097 enum_sym = ((struct symbol *)
1098 obstack_alloc (¤t_objfile->symbol_obstack,
1099 sizeof (struct symbol)));
1100 memset ((PTR) enum_sym, 0, sizeof (struct symbol));
1101 SYMBOL_NAME (enum_sym) = f->name;
1102 SYMBOL_CLASS (enum_sym) = LOC_CONST;
1103 SYMBOL_TYPE (enum_sym) = t;
1104 SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
1105 SYMBOL_VALUE (enum_sym) = tsym.value;
1106 if (SYMBOL_VALUE (enum_sym) < 0)
1108 add_symbol (enum_sym, top_stack->cur_block);
1110 /* Skip the stMembers that we've handled. */
1115 TYPE_FLAGS (t) |= TYPE_FLAG_UNSIGNED;
1117 /* make this the current type */
1118 top_stack->cur_type = t;
1119 top_stack->cur_field = 0;
1121 /* Do not create a symbol for alpha cc unnamed structs. */
1125 /* gcc puts out an empty struct for an opaque struct definitions,
1126 do not create a symbol for it either. */
1127 if (TYPE_NFIELDS (t) == 0)
1129 TYPE_FLAGS (t) |= TYPE_FLAG_STUB;
1133 s = new_symbol (name);
1134 SYMBOL_NAMESPACE (s) = STRUCT_NAMESPACE;
1135 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1136 SYMBOL_VALUE (s) = 0;
1137 SYMBOL_TYPE (s) = t;
1138 add_symbol (s, top_stack->cur_block);
1141 /* End of local variables shared by struct, union, enum, and
1142 block (as yet unknown struct/union/enum) processing. */
1146 found_ecoff_debugging_info = 1;
1147 /* beginnning of (code) block. Value of symbol
1148 is the displacement from procedure start */
1149 push_parse_stack ();
1151 /* Do not start a new block if this is the outermost block of a
1152 procedure. This allows the LOC_BLOCK symbol to point to the
1153 block with the local variables, so funcname::var works. */
1154 if (top_stack->blocktype == stProc
1155 || top_stack->blocktype == stStaticProc)
1157 top_stack->blocktype = stNil;
1161 top_stack->blocktype = stBlock;
1162 b = new_block (top_stack->maxsyms);
1163 BLOCK_START (b) = sh->value + top_stack->procadr;
1164 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1165 top_stack->cur_block = b;
1166 add_block (b, top_stack->cur_st);
1169 case stEnd: /* end (of anything) */
1170 if (sh->sc == scInfo || sh->sc == scCommon || sh->sc == scSCommon)
1172 /* Finished with type */
1173 top_stack->cur_type = 0;
1175 else if (sh->sc == scText &&
1176 (top_stack->blocktype == stProc ||
1177 top_stack->blocktype == stStaticProc))
1179 /* Finished with procedure */
1180 struct blockvector *bv = BLOCKVECTOR (top_stack->cur_st);
1181 struct mips_extra_func_info *e;
1183 struct type *ftype = top_stack->cur_type;
1186 BLOCK_END (top_stack->cur_block) += sh->value; /* size */
1188 /* Make up special symbol to contain procedure specific info */
1189 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
1190 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
1191 SYMBOL_CLASS (s) = LOC_CONST;
1192 SYMBOL_TYPE (s) = mdebug_type_void;
1193 e = ((struct mips_extra_func_info *)
1194 obstack_alloc (¤t_objfile->symbol_obstack,
1195 sizeof (struct mips_extra_func_info)));
1196 memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));
1197 SYMBOL_VALUE (s) = (long) e;
1198 e->numargs = top_stack->numargs;
1199 e->pdr.framereg = -1;
1200 add_symbol (s, top_stack->cur_block);
1202 /* Reallocate symbols, saving memory */
1203 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
1205 /* f77 emits proc-level with address bounds==[0,0],
1206 So look for such child blocks, and patch them. */
1207 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
1209 struct block *b_bad = BLOCKVECTOR_BLOCK (bv, i);
1210 if (BLOCK_SUPERBLOCK (b_bad) == b
1211 && BLOCK_START (b_bad) == top_stack->procadr
1212 && BLOCK_END (b_bad) == top_stack->procadr)
1214 BLOCK_START (b_bad) = BLOCK_START (b);
1215 BLOCK_END (b_bad) = BLOCK_END (b);
1219 if (TYPE_NFIELDS (ftype) <= 0)
1221 /* No parameter type information is recorded with the function's
1222 type. Set that from the type of the parameter symbols. */
1223 int nparams = top_stack->numargs;
1229 TYPE_NFIELDS (ftype) = nparams;
1230 TYPE_FIELDS (ftype) = (struct field *)
1231 TYPE_ALLOC (ftype, nparams * sizeof (struct field));
1233 for (i = iparams = 0; iparams < nparams; i++)
1235 sym = BLOCK_SYM (b, i);
1236 switch (SYMBOL_CLASS (sym))
1241 case LOC_REGPARM_ADDR:
1242 TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
1252 else if (sh->sc == scText && top_stack->blocktype == stBlock)
1254 /* End of (code) block. The value of the symbol is the
1255 displacement from the procedure`s start address of the
1256 end of this block. */
1257 BLOCK_END (top_stack->cur_block) = sh->value + top_stack->procadr;
1258 shrink_block (top_stack->cur_block, top_stack->cur_st);
1260 else if (sh->sc == scText && top_stack->blocktype == stNil)
1262 /* End of outermost block. Pop parse stack and ignore. The
1263 following stEnd of stProc will take care of the block. */
1266 else if (sh->sc == scText && top_stack->blocktype == stFile)
1268 /* End of file. Pop parse stack and ignore. Higher
1269 level code deals with this. */
1273 complain (&stEnd_complaint, sh->sc);
1275 pop_parse_stack (); /* restore previous lexical context */
1278 case stMember: /* member of struct or union */
1279 f = &TYPE_FIELDS (top_stack->cur_type)[top_stack->cur_field++];
1281 f->bitpos = sh->value;
1283 f->type = parse_type (cur_fd, ax, sh->index, &bitsize, bigend, name);
1284 f->bitsize = bitsize;
1287 case stIndirect: /* forward declaration on Irix5 */
1288 /* Forward declarations from Irix5 cc are handled by cross_ref,
1292 case stTypedef: /* type definition */
1293 found_ecoff_debugging_info = 1;
1295 /* Typedefs for forward declarations and opaque structs from alpha cc
1296 are handled by cross_ref, skip them. */
1300 /* Parse the type or use the pending type. */
1301 pend = is_pending_symbol (cur_fdr, ext_sh);
1302 if (pend == (struct mdebug_pending *) NULL)
1304 t = parse_type (cur_fd, ax, sh->index, (int *)NULL, bigend, name);
1305 add_pending (cur_fdr, ext_sh, t);
1310 /* mips cc puts out a typedef with the name of the struct for forward
1311 declarations. These should not go into the symbol table and
1312 TYPE_NAME should not be set for them.
1313 They can't be distinguished from an intentional typedef to
1314 the same name however:
1316 struct x { int ix; int jx; };
1320 struct xx {int ixx; int jxx; };
1321 generates a cross referencing stTypedef for x and xx.
1322 The user visible effect of this is that the type of a pointer
1323 to struct foo sometimes is given as `foo *' instead of `struct foo *'.
1324 The problem is fixed with alpha cc and Irix5 cc. */
1326 /* However if the typedef cross references to an opaque aggregate, it
1327 is safe to omit it from the symbol table. */
1329 if (has_opaque_xref (cur_fdr, sh))
1331 s = new_symbol (name);
1332 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1333 SYMBOL_CLASS (s) = LOC_TYPEDEF;
1334 SYMBOL_BLOCK_VALUE (s) = top_stack->cur_block;
1335 SYMBOL_TYPE (s) = t;
1336 add_symbol (s, top_stack->cur_block);
1338 /* Incomplete definitions of structs should not get a name. */
1339 if (TYPE_NAME (SYMBOL_TYPE (s)) == NULL
1340 && (TYPE_NFIELDS (SYMBOL_TYPE (s)) != 0
1341 || (TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_STRUCT
1342 && TYPE_CODE (SYMBOL_TYPE (s)) != TYPE_CODE_UNION)))
1344 if (TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_PTR
1345 || TYPE_CODE (SYMBOL_TYPE (s)) == TYPE_CODE_FUNC)
1347 /* If we are giving a name to a type such as "pointer to
1348 foo" or "function returning foo", we better not set
1349 the TYPE_NAME. If the program contains "typedef char
1350 *caddr_t;", we don't want all variables of type char
1351 * to print as caddr_t. This is not just a
1352 consequence of GDB's type management; CC and GCC (at
1353 least through version 2.4) both output variables of
1354 either type char * or caddr_t with the type
1355 refering to the stTypedef symbol for caddr_t. If a future
1356 compiler cleans this up it GDB is not ready for it
1357 yet, but if it becomes ready we somehow need to
1358 disable this check (without breaking the PCC/GCC2.4
1363 Fortunately, this check seems not to be necessary
1364 for anything except pointers or functions. */
1367 TYPE_NAME (SYMBOL_TYPE (s)) = SYMBOL_NAME (s);
1371 case stFile: /* file name */
1372 push_parse_stack ();
1373 top_stack->blocktype = sh->st;
1376 /* I`ve never seen these for C */
1378 break; /* register relocation */
1380 break; /* forwarding address */
1382 break; /* constant */
1384 complain (&unknown_mdebug_symtype_complaint, sh->st);
1391 /* Parse the type information provided in the raw AX entries for
1392 the symbol SH. Return the bitfield size in BS, in case.
1393 We must byte-swap the AX entries before we use them; BIGEND says whether
1394 they are big-endian or little-endian (from fh->fBigendian). */
1396 static struct type *
1397 parse_type (fd, ax, aux_index, bs, bigend, sym_name)
1400 unsigned int aux_index;
1405 /* Null entries in this map are treated specially */
1406 static struct type **map_bt[] =
1408 &mdebug_type_void, /* btNil */
1409 &mdebug_type_adr_32, /* btAdr */
1410 &mdebug_type_char, /* btChar */
1411 &mdebug_type_unsigned_char, /* btUChar */
1412 &mdebug_type_short, /* btShort */
1413 &mdebug_type_unsigned_short, /* btUShort */
1414 &mdebug_type_int_32, /* btInt */
1415 &mdebug_type_unsigned_int_32, /* btUInt */
1416 &mdebug_type_long_32, /* btLong */
1417 &mdebug_type_unsigned_long_32, /* btULong */
1418 &mdebug_type_float, /* btFloat */
1419 &mdebug_type_double, /* btDouble */
1426 &mdebug_type_complex, /* btComplex */
1427 &mdebug_type_double_complex, /* btDComplex */
1429 &mdebug_type_fixed_dec, /* btFixedDec */
1430 &mdebug_type_float_dec, /* btFloatDec */
1431 &mdebug_type_string, /* btString */
1434 &mdebug_type_void, /* btVoid */
1435 0, /* DEC C++: Pointer to member */
1436 0, /* DEC C++: Virtual function table */
1437 0, /* DEC C++: Class (Record) */
1438 &mdebug_type_long_64, /* btLong64 */
1439 &mdebug_type_unsigned_long_64, /* btULong64 */
1440 &mdebug_type_long_long_64, /* btLongLong64 */
1441 &mdebug_type_unsigned_long_long_64, /* btULongLong64 */
1442 &mdebug_type_adr_64, /* btAdr64 */
1443 &mdebug_type_int_64, /* btInt64 */
1444 &mdebug_type_unsigned_int_64, /* btUInt64 */
1448 struct type *tp = 0;
1449 enum type_code type_code = TYPE_CODE_UNDEF;
1451 /* Handle undefined types, they have indexNil. */
1452 if (aux_index == indexNil)
1453 return mdebug_type_int;
1455 /* Handle corrupt aux indices. */
1456 if (aux_index >= (debug_info->fdr + fd)->caux)
1458 complain (&index_complaint, sym_name);
1459 return mdebug_type_int;
1463 /* Use aux as a type information record, map its basic type. */
1464 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1465 if (t->bt >= (sizeof (map_bt) / sizeof (*map_bt)))
1467 complain (&basic_type_complaint, t->bt, sym_name);
1468 return mdebug_type_int;
1472 tp = *map_bt[t->bt];
1477 /* Cannot use builtin types -- build our own */
1481 type_code = TYPE_CODE_STRUCT;
1484 type_code = TYPE_CODE_UNION;
1487 type_code = TYPE_CODE_ENUM;
1490 type_code = TYPE_CODE_RANGE;
1493 type_code = TYPE_CODE_SET;
1496 /* alpha cc -migrate uses this for typedefs. The true type will
1497 be obtained by crossreferencing below. */
1498 type_code = TYPE_CODE_ERROR;
1501 /* alpha cc uses this for typedefs. The true type will be
1502 obtained by crossreferencing below. */
1503 type_code = TYPE_CODE_ERROR;
1506 complain (&basic_type_complaint, t->bt, sym_name);
1507 return mdebug_type_int;
1511 /* Move on to next aux */
1516 int width = AUX_GET_WIDTH (bigend, ax);
1518 /* Inhibit core dumps with some cfront generated objects that
1520 if (bs == (int *)NULL)
1522 /* Alpha cc -migrate encodes char and unsigned char types
1523 as short and unsigned short types with a field width of 8.
1524 Enum types also have a field width which we ignore for now. */
1525 if (t->bt == btShort && width == 8)
1526 tp = mdebug_type_char;
1527 else if (t->bt == btUShort && width == 8)
1528 tp = mdebug_type_unsigned_char;
1529 else if (t->bt == btEnum)
1532 complain (&bad_fbitfield_complaint, sym_name);
1539 /* A btIndirect entry cross references to an aux entry containing
1541 if (t->bt == btIndirect)
1548 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
1550 if (rn->rfd == 0xfff)
1552 rf = AUX_GET_ISYM (bigend, ax);
1560 complain (&bad_indirect_xref_complaint, sym_name);
1561 return mdebug_type_int;
1563 xref_fh = get_rfd (fd, rf);
1564 xref_fd = xref_fh - debug_info->fdr;
1565 tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
1566 rn->index, (int *) NULL, xref_fh->fBigendian, sym_name);
1569 /* All these types really point to some (common) MIPS type
1570 definition, and only the type-qualifiers fully identify
1571 them. We'll make the same effort at sharing. */
1572 if (t->bt == btStruct ||
1576 /* btSet (I think) implies that the name is a tag name, not a typedef
1577 name. This apparently is a MIPS extension for C sets. */
1582 /* Try to cross reference this type, build new type on failure. */
1583 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1584 if (tp == (struct type *) NULL)
1585 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1587 /* DEC c89 produces cross references to qualified aggregate types,
1588 dereference them. */
1589 while (TYPE_CODE (tp) == TYPE_CODE_PTR
1590 || TYPE_CODE (tp) == TYPE_CODE_ARRAY)
1591 tp = tp->target_type;
1593 /* Make sure that TYPE_CODE(tp) has an expected type code.
1594 Any type may be returned from cross_ref if file indirect entries
1596 if (TYPE_CODE (tp) != TYPE_CODE_STRUCT
1597 && TYPE_CODE (tp) != TYPE_CODE_UNION
1598 && TYPE_CODE (tp) != TYPE_CODE_ENUM)
1600 complain (&unexpected_type_code_complaint, sym_name);
1605 /* Usually, TYPE_CODE(tp) is already type_code. The main
1606 exception is if we guessed wrong re struct/union/enum.
1607 But for struct vs. union a wrong guess is harmless, so
1608 don't complain(). */
1609 if ((TYPE_CODE (tp) == TYPE_CODE_ENUM
1610 && type_code != TYPE_CODE_ENUM)
1611 || (TYPE_CODE (tp) != TYPE_CODE_ENUM
1612 && type_code == TYPE_CODE_ENUM))
1614 complain (&bad_tag_guess_complaint, sym_name);
1617 if (TYPE_CODE (tp) != type_code)
1619 TYPE_CODE (tp) = type_code;
1622 /* Do not set the tag name if it is a compiler generated tag name
1623 (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
1624 if (name[0] == '.' || name[0] == '\0')
1625 TYPE_TAG_NAME (tp) = NULL;
1626 else if (TYPE_TAG_NAME (tp) == NULL
1627 || !STREQ (TYPE_TAG_NAME (tp), name))
1628 TYPE_TAG_NAME (tp) = obsavestring (name, strlen (name),
1629 ¤t_objfile->type_obstack);
1633 /* All these types really point to some (common) MIPS type
1634 definition, and only the type-qualifiers fully identify
1635 them. We'll make the same effort at sharing.
1636 FIXME: We are not doing any guessing on range types. */
1637 if (t->bt == btRange)
1641 /* Try to cross reference this type, build new type on failure. */
1642 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1643 if (tp == (struct type *) NULL)
1644 tp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
1646 /* Make sure that TYPE_CODE(tp) has an expected type code.
1647 Any type may be returned from cross_ref if file indirect entries
1649 if (TYPE_CODE (tp) != TYPE_CODE_RANGE)
1651 complain (&unexpected_type_code_complaint, sym_name);
1655 /* Usually, TYPE_CODE(tp) is already type_code. The main
1656 exception is if we guessed wrong re struct/union/enum. */
1657 if (TYPE_CODE (tp) != type_code)
1659 complain (&bad_tag_guess_complaint, sym_name);
1660 TYPE_CODE (tp) = type_code;
1662 if (TYPE_NAME (tp) == NULL || !STREQ (TYPE_NAME (tp), name))
1663 TYPE_NAME (tp) = obsavestring (name, strlen (name),
1664 ¤t_objfile->type_obstack);
1667 if (t->bt == btTypedef)
1671 /* Try to cross reference this type, it should succeed. */
1672 ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
1673 if (tp == (struct type *) NULL)
1675 complain (&unable_to_cross_ref_complaint, sym_name);
1676 tp = mdebug_type_int;
1680 /* Deal with range types */
1681 if (t->bt == btRange)
1683 TYPE_NFIELDS (tp) = 2;
1684 TYPE_FIELDS (tp) = ((struct field *)
1685 TYPE_ALLOC (tp, 2 * sizeof (struct field)));
1686 TYPE_FIELD_NAME (tp, 0) = obsavestring ("Low", strlen ("Low"),
1687 ¤t_objfile->type_obstack);
1688 TYPE_FIELD_BITPOS (tp, 0) = AUX_GET_DNLOW (bigend, ax);
1690 TYPE_FIELD_NAME (tp, 1) = obsavestring ("High", strlen ("High"),
1691 ¤t_objfile->type_obstack);
1692 TYPE_FIELD_BITPOS (tp, 1) = AUX_GET_DNHIGH (bigend, ax);
1696 /* Parse all the type qualifiers now. If there are more
1697 than 6 the game will continue in the next aux */
1701 #define PARSE_TQ(tq) \
1702 if (t->tq != tqNil) \
1703 ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
1715 /* mips cc 2.x and gcc never put out continued aux entries. */
1719 (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
1723 /* Complain for illegal continuations due to corrupt aux entries. */
1725 complain (&bad_continued_complaint, sym_name);
1730 /* Make up a complex type from a basic one. Type is passed by
1731 reference in TPP and side-effected as necessary. The type
1732 qualifier TQ says how to handle the aux symbols at AX for
1733 the symbol SX we are currently analyzing. BIGEND says whether
1734 aux symbols are big-endian or little-endian.
1735 Returns the number of aux symbols we parsed. */
1738 upgrade_type (fd, tpp, tq, ax, bigend, sym_name)
1749 /* Used in array processing */
1760 t = lookup_pointer_type (*tpp);
1765 t = lookup_function_type (*tpp);
1772 /* Determine and record the domain type (type of index) */
1773 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
1779 rf = AUX_GET_ISYM (bigend, ax);
1782 fh = get_rfd (fd, rf);
1784 indx = parse_type (fh - debug_info->fdr,
1785 debug_info->external_aux + fh->iauxBase,
1786 id, (int *) NULL, bigend, sym_name);
1788 /* The bounds type should be an integer type, but might be anything
1789 else due to corrupt aux entries. */
1790 if (TYPE_CODE (indx) != TYPE_CODE_INT)
1792 complain (&array_index_type_complaint, sym_name);
1793 indx = mdebug_type_int;
1796 /* Get the bounds, and create the array type. */
1798 lower = AUX_GET_DNLOW (bigend, ax);
1800 upper = AUX_GET_DNHIGH (bigend, ax);
1802 rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
1804 range = create_range_type ((struct type *) NULL, indx,
1807 t = create_array_type ((struct type *) NULL, *tpp, range);
1809 /* We used to fill in the supplied array element bitsize
1810 here if the TYPE_LENGTH of the target type was zero.
1811 This happens for a `pointer to an array of anonymous structs',
1812 but in this case the array element bitsize is also zero,
1813 so nothing is gained.
1814 And we used to check the TYPE_LENGTH of the target type against
1815 the supplied array element bitsize.
1816 gcc causes a mismatch for `pointer to array of object',
1817 since the sdb directives it uses do not have a way of
1818 specifying the bitsize, but it does no harm (the
1819 TYPE_LENGTH should be correct) and we should be able to
1820 ignore the erroneous bitsize from the auxiliary entry safely.
1821 dbx seems to ignore it too. */
1823 /* TYPE_FLAG_TARGET_STUB now takes care of the zero TYPE_LENGTH
1825 if (TYPE_LENGTH (*tpp) == 0)
1827 TYPE_FLAGS (t) |= TYPE_FLAG_TARGET_STUB;
1834 /* Volatile -- currently ignored */
1838 /* Const -- currently ignored */
1842 complain (&unknown_type_qual_complaint, tq);
1848 /* Parse a procedure descriptor record PR. Note that the procedure is
1849 parsed _after_ the local symbols, now we just insert the extra
1850 information we need into a MIPS_EFI_SYMBOL_NAME symbol that has
1851 already been placed in the procedure's main block. Note also that
1852 images that have been partially stripped (ld -x) have been deprived
1853 of local symbols, and we have to cope with them here. FIRST_OFF is
1854 the offset of the first procedure for this FDR; we adjust the
1855 address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
1856 to look for the function which contains the MIPS_EFI_SYMBOL_NAME symbol
1857 in question, or NULL to use top_stack->cur_block. */
1859 static void parse_procedure PARAMS ((PDR *, struct symtab *, CORE_ADDR,
1860 struct partial_symtab *));
1863 parse_procedure (pr, search_symtab, lowest_pdr_addr, pst)
1865 struct symtab *search_symtab;
1866 CORE_ADDR lowest_pdr_addr;
1867 struct partial_symtab *pst;
1869 struct symbol *s, *i;
1871 struct mips_extra_func_info *e;
1874 /* Simple rule to find files linked "-x" */
1875 if (cur_fdr->rss == -1)
1879 /* Static procedure at address pr->adr. Sigh. */
1880 /* FIXME-32x64. assuming pr->adr fits in long. */
1881 complain (&pdr_static_symbol_complaint, (unsigned long) pr->adr);
1889 (*debug_swap->swap_ext_in) (cur_bfd,
1890 ((char *) debug_info->external_ext
1892 * debug_swap->external_ext_size)),
1894 sh_name = debug_info->ssext + she.asym.iss;
1902 (*debug_swap->swap_sym_in) (cur_bfd,
1903 ((char *) debug_info->external_sym
1904 + ((cur_fdr->isymBase + pr->isym)
1905 * debug_swap->external_sym_size)),
1907 sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
1910 if (search_symtab != NULL)
1913 /* This loses both in the case mentioned (want a static, find a global),
1914 but also if we are looking up a non-mangled name which happens to
1915 match the name of a mangled function. */
1916 /* We have to save the cur_fdr across the call to lookup_symbol.
1917 If the pdr is for a static function and if a global function with
1918 the same name exists, lookup_symbol will eventually read in the symtab
1919 for the global function and clobber cur_fdr. */
1920 FDR *save_cur_fdr = cur_fdr;
1921 s = lookup_symbol (sh_name, NULL, VAR_NAMESPACE, 0, NULL);
1922 cur_fdr = save_cur_fdr;
1926 BLOCKVECTOR_BLOCK (BLOCKVECTOR (search_symtab), STATIC_BLOCK),
1932 s = mylookup_symbol (sh_name, top_stack->cur_block,
1933 VAR_NAMESPACE, LOC_BLOCK);
1937 b = SYMBOL_BLOCK_VALUE (s);
1941 complain (&pdr_for_nonsymbol_complaint, sh_name);
1945 /* FIXME -- delete. We can't do symbol allocation now; it's all done. */
1946 s = new_symbol (sh_name);
1947 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
1948 SYMBOL_CLASS (s) = LOC_BLOCK;
1949 /* Donno its type, hope int is ok */
1950 SYMBOL_TYPE (s) = lookup_function_type (mdebug_type_int);
1951 add_symbol (s, top_stack->cur_block);
1952 /* Wont have symbols for this one */
1954 SYMBOL_BLOCK_VALUE (s) = b;
1955 BLOCK_FUNCTION (b) = s;
1956 BLOCK_START (b) = pr->adr;
1957 /* BOUND used to be the end of procedure's text, but the
1958 argument is no longer passed in. */
1959 BLOCK_END (b) = bound;
1960 BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
1961 add_block (b, top_stack->cur_st);
1965 i = mylookup_symbol (MIPS_EFI_SYMBOL_NAME, b, LABEL_NAMESPACE, LOC_CONST);
1969 e = (struct mips_extra_func_info *) SYMBOL_VALUE (i);
1971 e->pdr.isym = (long) s;
1972 e->pdr.adr += pst->textlow - lowest_pdr_addr;
1974 /* Correct incorrect setjmp procedure descriptor from the library
1975 to make backtrace through setjmp work. */
1976 if (e->pdr.pcreg == 0 && STREQ (sh_name, "setjmp"))
1978 complain (&bad_setjmp_pdr_complaint, 0);
1979 e->pdr.pcreg = RA_REGNUM;
1980 e->pdr.regmask = 0x80000000;
1981 e->pdr.regoffset = -4;
1985 /* It would be reasonable that functions that have been compiled
1986 without debugging info have a btNil type for their return value,
1987 and functions that are void and are compiled with debugging info
1989 gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
1990 to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
1992 The glevel field in cur_fdr could be used to determine the presence
1993 of debugging info, but GCC doesn't always pass the -g switch settings
1994 to the assembler and GAS doesn't set the glevel field from the -g switch
1996 To work around these problems, the return value type of a TYPE_CODE_VOID
1997 function is adjusted accordingly if no debugging info was found in the
1998 compilation unit. */
2000 if (processing_gcc_compilation == 0
2001 && found_ecoff_debugging_info == 0
2002 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (s))) == TYPE_CODE_VOID)
2003 SYMBOL_TYPE (s) = nodebug_func_symbol_type;
2006 /* Relocate the extra function info pointed to by the symbol table. */
2009 ecoff_relocate_efi (sym, delta)
2013 struct mips_extra_func_info *e;
2015 e = (struct mips_extra_func_info *) SYMBOL_VALUE (sym);
2017 e->pdr.adr += delta;
2020 /* Parse the external symbol ES. Just call parse_symbol() after
2021 making sure we know where the aux are for it.
2022 BIGEND says whether aux entries are big-endian or little-endian.
2024 This routine clobbers top_stack->cur_block and ->cur_st. */
2026 static void parse_external PARAMS ((EXTR *, int, struct section_offsets *));
2029 parse_external (es, bigend, section_offsets)
2032 struct section_offsets *section_offsets;
2036 if (es->ifd != ifdNil)
2039 cur_fdr = debug_info->fdr + cur_fd;
2040 ax = debug_info->external_aux + cur_fdr->iauxBase;
2044 cur_fdr = debug_info->fdr;
2048 /* Reading .o files */
2049 if (es->asym.sc == scUndefined || es->asym.sc == scNil)
2052 switch (es->asym.st)
2055 /* These are generated for static symbols in .o files,
2076 /* FIXME: Turn this into a complaint? */
2078 printf_filtered ("Warning: %s `%s' is undefined (in %s)\n",
2079 what, debug_info->ssext + es->asym.iss,
2080 fdr_name (cur_fdr));
2084 switch (es->asym.st)
2088 /* There is no need to parse the external procedure symbols.
2089 If they are from objects compiled without -g, their index will
2090 be indexNil, and the symbol definition from the minimal symbol
2091 is preferrable (yielding a function returning int instead of int).
2092 If the index points to a local procedure symbol, the local
2093 symbol already provides the correct type.
2094 Note that the index of the external procedure symbol points
2095 to the local procedure symbol in the local symbol table, and
2096 _not_ to the auxiliary symbol info. */
2100 /* Global common symbols are resolved by the runtime loader,
2102 if (es->asym.sc == scCommon || es->asym.sc == scSCommon)
2105 /* Note that the case of a symbol with indexNil must be handled
2106 anyways by parse_symbol(). */
2107 parse_symbol (&es->asym, ax, (char *) NULL, bigend, section_offsets);
2114 /* Parse the line number info for file descriptor FH into
2115 GDB's linetable LT. MIPS' encoding requires a little bit
2116 of magic to get things out. Note also that MIPS' line
2117 numbers can go back and forth, apparently we can live
2118 with that and do not need to reorder our linetables */
2120 static void parse_lines PARAMS ((FDR *, PDR *, struct linetable *, int,
2121 struct partial_symtab *, CORE_ADDR));
2124 parse_lines (fh, pr, lt, maxlines, pst, lowest_pdr_addr)
2127 struct linetable *lt;
2129 struct partial_symtab *pst;
2130 CORE_ADDR lowest_pdr_addr;
2132 unsigned char *base;
2134 int delta, count, lineno = 0;
2136 if (fh->cbLine == 0)
2139 /* Scan by procedure descriptors */
2141 for (j = 0; j < fh->cpd; j++, pr++)
2145 unsigned char *halt;
2147 /* No code for this one */
2148 if (pr->iline == ilineNil ||
2149 pr->lnLow == -1 || pr->lnHigh == -1)
2152 /* Determine start and end address of compressed line bytes for
2154 base = debug_info->line + fh->cbLineOffset;
2155 if (j != (fh->cpd - 1))
2156 halt = base + pr[1].cbLineOffset;
2158 halt = base + fh->cbLine;
2159 base += pr->cbLineOffset;
2161 adr = pst->textlow + pr->adr - lowest_pdr_addr;
2163 l = adr >> 2; /* in words */
2164 for (lineno = pr->lnLow; base < halt; )
2166 count = *base & 0x0f;
2167 delta = *base++ >> 4;
2172 delta = (base[0] << 8) | base[1];
2173 if (delta >= 0x8000)
2177 lineno += delta; /* first delta is 0 */
2179 /* Complain if the line table overflows. Could happen
2180 with corrupt binaries. */
2181 if (lt->nitems >= maxlines)
2183 complain (&bad_linetable_guess_complaint, fdr_name (fh));
2186 k = add_line (lt, lineno, l, k);
2192 /* Master parsing procedure for first-pass reading of file symbols
2193 into a partial_symtab. */
2196 parse_partial_symbols (objfile, section_offsets)
2197 struct objfile *objfile;
2198 struct section_offsets *section_offsets;
2200 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
2201 const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
2202 const bfd_size_type external_ext_size = debug_swap->external_ext_size;
2203 void (* const swap_ext_in) PARAMS ((bfd *, PTR, EXTR *))
2204 = debug_swap->swap_ext_in;
2205 void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
2206 = debug_swap->swap_sym_in;
2207 void (* const swap_rfd_in) PARAMS ((bfd *, PTR, RFDT *))
2208 = debug_swap->swap_rfd_in;
2210 HDRR *hdr = &debug_info->symbolic_header;
2211 /* Running pointers */
2216 register EXTR *ext_in;
2219 struct partial_symtab *pst;
2221 int past_first_source_file = 0;
2223 /* List of current psymtab's include files */
2224 char **psymtab_include_list;
2225 int includes_allocated;
2228 struct pst_map *fdr_to_pst;
2229 /* Index within current psymtab dependency list */
2230 struct partial_symtab **dependency_list;
2231 int dependencies_used, dependencies_allocated;
2232 struct cleanup *old_chain;
2234 enum language prev_language;
2235 asection *text_sect;
2236 int relocatable = 0;
2238 /* Irix 5.2 shared libraries have a fh->adr field of zero, but
2239 the shared libraries are prelinked at a high memory address.
2240 We have to adjust the start address of the object file for this case,
2241 by setting it to the start address of the first procedure in the file.
2242 But we should do no adjustments if we are debugging a .o file, where
2243 the text section (and fh->adr) really starts at zero. */
2244 text_sect = bfd_get_section_by_name (cur_bfd, ".text");
2245 if (text_sect != NULL
2246 && (bfd_get_section_flags (cur_bfd, text_sect) & SEC_RELOC))
2249 extern_tab = (EXTR *) obstack_alloc (&objfile->psymbol_obstack,
2250 sizeof (EXTR) * hdr->iextMax);
2252 includes_allocated = 30;
2254 psymtab_include_list = (char **) alloca (includes_allocated *
2256 next_symbol_text_func = mdebug_next_symbol_text;
2258 dependencies_allocated = 30;
2259 dependencies_used = 0;
2261 (struct partial_symtab **) alloca (dependencies_allocated *
2262 sizeof (struct partial_symtab *));
2264 last_source_file = NULL;
2269 * Only parse the Local and External symbols, and the Relative FDR.
2270 * Fixup enough of the loader symtab to be able to use it.
2271 * Allocate space only for the file's portions we need to
2276 max_glevel = MIN_GLEVEL;
2278 /* Allocate the map FDR -> PST.
2279 Minor hack: -O3 images might claim some global data belongs
2280 to FDR -1. We`ll go along with that */
2281 fdr_to_pst = (struct pst_map *) xzalloc ((hdr->ifdMax + 1) * sizeof *fdr_to_pst);
2282 old_chain = make_cleanup (free, fdr_to_pst);
2285 struct partial_symtab *pst = new_psymtab ("", objfile, section_offsets);
2286 fdr_to_pst[-1].pst = pst;
2290 /* Allocate the global pending list. */
2292 ((struct mdebug_pending **)
2293 obstack_alloc (&objfile->psymbol_obstack,
2294 hdr->ifdMax * sizeof (struct mdebug_pending *)));
2295 memset ((PTR) pending_list, 0,
2296 hdr->ifdMax * sizeof (struct mdebug_pending *));
2298 /* Pass 0 over external syms: swap them in. */
2299 ext_block = (EXTR *) xmalloc (hdr->iextMax * sizeof (EXTR));
2300 make_cleanup (free, ext_block);
2302 ext_out = (char *) debug_info->external_ext;
2303 ext_out_end = ext_out + hdr->iextMax * external_ext_size;
2305 for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
2306 (*swap_ext_in) (cur_bfd, ext_out, ext_in);
2308 /* Pass 1 over external syms: Presize and partition the list */
2310 ext_in_end = ext_in + hdr->iextMax;
2311 for (; ext_in < ext_in_end; ext_in++)
2313 /* See calls to complain below. */
2314 if (ext_in->ifd >= -1
2315 && ext_in->ifd < hdr->ifdMax
2316 && ext_in->asym.iss >= 0
2317 && ext_in->asym.iss < hdr->issExtMax)
2318 fdr_to_pst[ext_in->ifd].n_globals++;
2321 /* Pass 1.5 over files: partition out global symbol space */
2323 for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
2325 fdr_to_pst[f_idx].globals_offset = s_idx;
2326 s_idx += fdr_to_pst[f_idx].n_globals;
2327 fdr_to_pst[f_idx].n_globals = 0;
2330 /* Pass 2 over external syms: fill in external symbols */
2332 ext_in_end = ext_in + hdr->iextMax;
2333 for (; ext_in < ext_in_end; ext_in++)
2335 enum minimal_symbol_type ms_type = mst_text;
2336 CORE_ADDR svalue = ext_in->asym.value;
2338 /* The Irix 5 native tools seem to sometimes generate bogus
2339 external symbols. */
2340 if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
2342 complain (&bad_ext_ifd_complaint, ext_in->ifd, hdr->ifdMax);
2345 if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
2347 complain (&bad_ext_iss_complaint, ext_in->asym.iss,
2352 extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
2353 + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
2355 if (ext_in->asym.sc == scUndefined || ext_in->asym.sc == scNil)
2358 name = debug_info->ssext + ext_in->asym.iss;
2359 switch (ext_in->asym.st)
2362 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2365 ms_type = mst_file_text;
2366 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2369 if (ext_in->asym.sc == scCommon || ext_in->asym.sc == scSCommon)
2371 /* The value of a common symbol is its size, not its address.
2375 else if (ext_in->asym.sc == scData
2376 || ext_in->asym.sc == scSData
2377 || ext_in->asym.sc == scRData
2378 || ext_in->asym.sc == scPData
2379 || ext_in->asym.sc == scXData)
2382 svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);
2387 svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);
2391 if (ext_in->asym.sc == scAbs)
2393 else if (ext_in->asym.sc == scText
2394 || ext_in->asym.sc == scInit
2395 || ext_in->asym.sc == scFini)
2397 ms_type = mst_file_text;
2398 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2400 else if (ext_in->asym.sc == scData
2401 || ext_in->asym.sc == scSData
2402 || ext_in->asym.sc == scRData
2403 || ext_in->asym.sc == scPData
2404 || ext_in->asym.sc == scXData)
2406 ms_type = mst_file_data;
2407 svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);
2411 ms_type = mst_file_bss;
2412 svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);
2416 /* The alpha has the section start addresses in stLocal symbols
2417 whose name starts with a `.'. Skip those but complain for all
2418 other stLocal symbols. */
2423 ms_type = mst_unknown;
2424 complain (&unknown_ext_complaint, name);
2426 prim_record_minimal_symbol (name, svalue, ms_type, objfile);
2429 /* Pass 3 over files, over local syms: fill in static symbols */
2430 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2432 struct partial_symtab *save_pst;
2436 cur_fdr = fh = debug_info->fdr + f_idx;
2440 fdr_to_pst[f_idx].pst = NULL;
2444 /* Determine the start address for this object file from the
2445 file header and relocate it, except for Irix 5.2 zero fh->adr. */
2449 if (relocatable || textlow != 0)
2450 textlow += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2454 pst = start_psymtab_common (objfile, section_offsets,
2457 objfile->global_psymbols.next,
2458 objfile->static_psymbols.next);
2459 pst->read_symtab_private = ((char *)
2460 obstack_alloc (&objfile->psymbol_obstack,
2461 sizeof (struct symloc)));
2462 memset ((PTR) pst->read_symtab_private, 0, sizeof (struct symloc));
2465 FDR_IDX (pst) = f_idx;
2466 CUR_BFD (pst) = cur_bfd;
2467 DEBUG_SWAP (pst) = debug_swap;
2468 DEBUG_INFO (pst) = debug_info;
2469 PENDING_LIST (pst) = pending_list;
2471 /* The way to turn this into a symtab is to call... */
2472 pst->read_symtab = mdebug_psymtab_to_symtab;
2474 /* Set up language for the pst.
2475 The language from the FDR is used if it is unambigious (e.g. cfront
2476 with native cc and g++ will set the language to C).
2477 Otherwise we have to deduce the language from the filename.
2478 Native ecoff has every header file in a separate FDR, so
2479 deduce_language_from_filename will return language_unknown for
2480 a header file, which is not what we want.
2481 But the FDRs for the header files are after the FDR for the source
2482 file, so we can assign the language of the source file to the
2483 following header files. Then we save the language in the private
2484 pst data so that we can reuse it when building symtabs. */
2485 prev_language = psymtab_language;
2489 case langCplusplusV2:
2490 psymtab_language = language_cplus;
2493 psymtab_language = deduce_language_from_filename (fdr_name (fh));
2496 if (psymtab_language == language_unknown)
2497 psymtab_language = prev_language;
2498 PST_PRIVATE (pst)->pst_language = psymtab_language;
2500 pst->texthigh = pst->textlow;
2502 /* For stabs-in-ecoff files, the second symbol must be @stab.
2503 This symbol is emitted by mips-tfile to signal that the
2504 current object file uses encapsulated stabs instead of mips
2505 ecoff for local symbols. (It is the second symbol because
2506 the first symbol is the stFile used to signal the start of a
2508 processing_gcc_compilation = 0;
2511 (*swap_sym_in) (cur_bfd,
2512 ((char *) debug_info->external_sym
2513 + (fh->isymBase + 1) * external_sym_size),
2515 if (STREQ (debug_info->ss + fh->issBase + sh.iss, stabs_symbol))
2516 processing_gcc_compilation = 2;
2519 if (processing_gcc_compilation != 0)
2521 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
2526 (*swap_sym_in) (cur_bfd,
2527 (((char *) debug_info->external_sym)
2528 + (fh->isymBase + cur_sdx) * external_sym_size),
2530 type_code = ECOFF_UNMARK_STAB (sh.index);
2531 if (!ECOFF_IS_STAB (&sh))
2533 if (sh.st == stProc || sh.st == stStaticProc)
2538 sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2539 if (sh.st == stStaticProc)
2541 namestring = debug_info->ss + fh->issBase + sh.iss;
2542 prim_record_minimal_symbol_and_info (namestring,
2549 procaddr = sh.value;
2551 isym = AUX_GET_ISYM (fh->fBigendian,
2552 (debug_info->external_aux
2555 (*swap_sym_in) (cur_bfd,
2556 ((char *) debug_info->external_sym
2557 + ((fh->isymBase + isym - 1)
2558 * external_sym_size)),
2562 long high = procaddr + sh.value;
2564 /* Kludge for Irix 5.2 zero fh->adr. */
2566 && (pst->textlow == 0 || procaddr < pst->textlow))
2567 pst->textlow = procaddr;
2568 if (high > pst->texthigh)
2569 pst->texthigh = high;
2572 else if (sh.st == stStatic)
2586 namestring = debug_info->ss + fh->issBase + sh.iss;
2587 sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA);
2588 prim_record_minimal_symbol_and_info (namestring,
2597 namestring = debug_info->ss + fh->issBase + sh.iss;
2598 sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS);
2599 prim_record_minimal_symbol_and_info (namestring,
2610 #define SET_NAMESTRING() \
2611 namestring = debug_info->ss + fh->issBase + sh.iss
2612 #define CUR_SYMBOL_TYPE type_code
2613 #define CUR_SYMBOL_VALUE sh.value
2614 #define START_PSYMTAB(ofile,secoff,fname,low,symoff,global_syms,static_syms)\
2616 #define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
2617 #define HANDLE_RBRAC(val) \
2618 if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
2619 #include "partial-stab.h"
2624 for (cur_sdx = 0; cur_sdx < fh->csym;)
2627 enum address_class class;
2629 (*swap_sym_in) (cur_bfd,
2630 ((char *) debug_info->external_sym
2631 + ((fh->isymBase + cur_sdx)
2632 * external_sym_size)),
2635 if (ECOFF_IS_STAB (&sh))
2641 /* Non absolute static symbols go into the minimal table. */
2642 if (sh.sc == scUndefined || sh.sc == scNil
2643 || (sh.index == indexNil
2644 && (sh.st != stStatic || sh.sc == scAbs)))
2646 /* FIXME, premature? */
2651 name = debug_info->ss + fh->issBase + sh.iss;
2656 /* The value of a stEnd symbol is the displacement from the
2657 corresponding start symbol value, do not relocate it. */
2659 sh.value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2666 sh.value += ANOFFSET (section_offsets, SECT_OFF_DATA);
2670 sh.value += ANOFFSET (section_offsets, SECT_OFF_BSS);
2681 prim_record_minimal_symbol_and_info (name, sh.value,
2682 mst_file_text, NULL,
2683 SECT_OFF_TEXT, objfile);
2688 /* Usually there is a local and a global stProc symbol
2689 for a function. This means that the function name
2690 has already been entered into the mimimal symbol table
2691 while processing the global symbols in pass 2 above.
2692 One notable exception is the PROGRAM name from
2693 f77 compiled executables, it is only put out as
2694 local stProc symbol, and a global MAIN__ stProc symbol
2695 points to it. It doesn't matter though, as gdb is
2696 still able to find the PROGRAM name via the partial
2697 symbol table, and the MAIN__ symbol via the minimal
2699 if (sh.st == stProc)
2700 add_psymbol_to_list (name, strlen (name),
2701 VAR_NAMESPACE, LOC_BLOCK,
2702 &objfile->global_psymbols,
2703 sh.value, 0, psymtab_language, objfile);
2705 add_psymbol_to_list (name, strlen (name),
2706 VAR_NAMESPACE, LOC_BLOCK,
2707 &objfile->static_psymbols,
2708 sh.value, 0, psymtab_language, objfile);
2710 /* Skip over procedure to next one. */
2711 if (sh.index >= hdr->iauxMax)
2713 /* Should not happen, but does when cross-compiling
2714 with the MIPS compiler. FIXME -- pull later. */
2715 complain (&index_complaint, name);
2716 new_sdx = cur_sdx + 1; /* Don't skip at all */
2719 new_sdx = AUX_GET_ISYM (fh->fBigendian,
2720 (debug_info->external_aux
2723 procaddr = sh.value;
2725 if (new_sdx <= cur_sdx)
2727 /* This should not happen either... FIXME. */
2728 complain (&aux_index_complaint, name);
2729 new_sdx = cur_sdx + 1; /* Don't skip backward */
2733 (*swap_sym_in) (cur_bfd,
2734 ((char *) debug_info->external_sym
2735 + ((fh->isymBase + cur_sdx - 1)
2736 * external_sym_size)),
2741 /* Kludge for Irix 5.2 zero fh->adr. */
2743 && (pst->textlow == 0 || procaddr < pst->textlow))
2744 pst->textlow = procaddr;
2746 high = procaddr + sh.value;
2747 if (high > pst->texthigh)
2748 pst->texthigh = high;
2751 case stStatic: /* Variable */
2756 || sh.sc == scXData)
2757 prim_record_minimal_symbol_and_info (name, sh.value,
2758 mst_file_data, NULL,
2762 prim_record_minimal_symbol_and_info (name, sh.value,
2769 case stIndirect:/* Irix5 forward declaration */
2770 /* Skip forward declarations from Irix5 cc */
2773 case stTypedef:/* Typedef */
2774 /* Skip typedefs for forward declarations and opaque
2775 structs from alpha and mips cc. */
2776 if (sh.iss == 0 || has_opaque_xref (fh, &sh))
2778 class = LOC_TYPEDEF;
2781 case stConstant: /* Constant decl */
2788 case stBlock: /* { }, str, un, enum*/
2789 /* Do not create a partial symbol for cc unnamed aggregates
2790 and gcc empty aggregates. */
2791 if ((sh.sc == scInfo
2792 || sh.sc == scCommon || sh.sc == scSCommon)
2794 && sh.index != cur_sdx + 2)
2796 add_psymbol_to_list (name, strlen (name),
2797 STRUCT_NAMESPACE, LOC_TYPEDEF,
2798 &objfile->static_psymbols,
2800 psymtab_language, objfile);
2802 handle_psymbol_enumerators (objfile, fh, sh.st, sh.value);
2804 /* Skip over the block */
2806 if (new_sdx <= cur_sdx)
2808 /* This happens with the Ultrix kernel. */
2809 complain (&block_index_complaint, name);
2810 new_sdx = cur_sdx + 1; /* Don't skip backward */
2815 case stFile: /* File headers */
2816 case stLabel: /* Labels */
2817 case stEnd: /* Ends of files */
2820 case stLocal: /* Local variables */
2821 /* Normally these are skipped because we skip over
2822 all blocks we see. However, these can occur
2823 as visible symbols in a .h file that contains code. */
2827 /* Both complaints are valid: one gives symbol name,
2828 the other the offending symbol type. */
2829 complain (&unknown_sym_complaint, name);
2830 complain (&unknown_st_complaint, sh.st);
2834 /* Use this gdb symbol */
2835 add_psymbol_to_list (name, strlen (name),
2836 VAR_NAMESPACE, class,
2837 &objfile->static_psymbols, sh.value,
2838 0, psymtab_language, objfile);
2840 cur_sdx++; /* Go to next file symbol */
2843 /* Now do enter the external symbols. */
2844 ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
2845 cur_sdx = fdr_to_pst[f_idx].n_globals;
2846 PST_PRIVATE (save_pst)->extern_count = cur_sdx;
2847 PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
2848 for (; --cur_sdx >= 0; ext_ptr++)
2850 enum address_class class;
2855 if (ext_ptr->ifd != f_idx)
2857 psh = &ext_ptr->asym;
2859 /* Do not add undefined symbols to the partial symbol table. */
2860 if (psh->sc == scUndefined || psh->sc == scNil)
2863 svalue = psh->value;
2867 svalue += ANOFFSET (section_offsets, SECT_OFF_TEXT);
2874 svalue += ANOFFSET (section_offsets, SECT_OFF_DATA);
2878 svalue += ANOFFSET (section_offsets, SECT_OFF_BSS);
2885 /* These are generated for static symbols in .o files,
2890 /* External procedure symbols have been entered
2891 into the minimal symbol table in pass 2 above.
2892 Ignore them, as parse_external will ignore them too. */
2898 complain (&unknown_ext_complaint,
2899 debug_info->ssext + psh->iss);
2900 /* Fall through, pretend it's global. */
2902 /* Global common symbols are resolved by the runtime loader,
2904 if (psh->sc == scCommon || psh->sc == scSCommon)
2910 name = debug_info->ssext + psh->iss;
2911 add_psymbol_to_list (name, strlen (name),
2912 VAR_NAMESPACE, class,
2913 &objfile->global_psymbols,
2915 psymtab_language, objfile);
2919 /* Link pst to FDR. end_psymtab returns NULL if the psymtab was
2920 empty and put on the free list. */
2921 fdr_to_pst[f_idx].pst = end_psymtab (save_pst,
2922 psymtab_include_list, includes_used,
2923 -1, save_pst->texthigh,
2924 dependency_list, dependencies_used);
2926 dependencies_used = 0;
2928 if (objfile->ei.entry_point >= save_pst->textlow &&
2929 objfile->ei.entry_point < save_pst->texthigh)
2931 objfile->ei.entry_file_lowpc = save_pst->textlow;
2932 objfile->ei.entry_file_highpc = save_pst->texthigh;
2935 /* The objfile has its functions reordered if this partial symbol
2936 table overlaps any other partial symbol table.
2937 We cannot assume a reordered objfile if a partial symbol table
2938 is contained within another partial symbol table, as partial symbol
2939 tables for include files with executable code are contained
2940 within the partial symbol table for the including source file,
2941 and we do not want to flag the objfile reordered for these cases.
2943 This strategy works well for Irix-5.2 shared libraries, but we
2944 might have to use a more elaborate (and slower) algorithm for
2946 save_pst = fdr_to_pst[f_idx].pst;
2947 if (save_pst != NULL
2948 && save_pst->textlow != 0
2949 && !(objfile->flags & OBJF_REORDERED))
2951 ALL_OBJFILE_PSYMTABS (objfile, pst)
2954 && save_pst->textlow >= pst->textlow
2955 && save_pst->textlow < pst->texthigh
2956 && save_pst->texthigh > pst->texthigh)
2958 objfile->flags |= OBJF_REORDERED;
2965 /* Now scan the FDRs for dependencies */
2966 for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
2968 fh = f_idx + debug_info->fdr;
2969 pst = fdr_to_pst[f_idx].pst;
2971 if (pst == (struct partial_symtab *)NULL)
2974 /* This should catch stabs-in-ecoff. */
2978 /* Skip the first file indirect entry as it is a self dependency
2979 for source files or a reverse .h -> .c dependency for header files. */
2980 pst->number_of_dependencies = 0;
2982 ((struct partial_symtab **)
2983 obstack_alloc (&objfile->psymbol_obstack,
2985 * sizeof (struct partial_symtab *))));
2986 for (s_idx = 1; s_idx < fh->crfd; s_idx++)
2990 (*swap_rfd_in) (cur_bfd,
2991 ((char *) debug_info->external_rfd
2992 + (fh->rfdBase + s_idx) * external_rfd_size),
2994 if (rh < 0 || rh >= hdr->ifdMax)
2996 complain (&bad_file_number_complaint, rh);
3000 /* Skip self dependencies of header files. */
3004 /* Do not add to dependeny list if psymtab was empty. */
3005 if (fdr_to_pst[rh].pst == (struct partial_symtab *)NULL)
3007 pst->dependencies[pst->number_of_dependencies++] = fdr_to_pst[rh].pst;
3011 /* Remove the dummy psymtab created for -O3 images above, if it is
3012 still empty, to enable the detection of stripped executables. */
3013 if (objfile->psymtabs->next == NULL
3014 && objfile->psymtabs->number_of_dependencies == 0
3015 && objfile->psymtabs->n_global_syms == 0
3016 && objfile->psymtabs->n_static_syms == 0)
3017 objfile->psymtabs = NULL;
3018 do_cleanups (old_chain);
3021 /* If the current psymbol has an enumerated type, we need to add
3022 all the the enum constants to the partial symbol table. */
3025 handle_psymbol_enumerators (objfile, fh, stype, svalue)
3026 struct objfile *objfile;
3031 const bfd_size_type external_sym_size = debug_swap->external_sym_size;
3032 void (* const swap_sym_in) PARAMS ((bfd *, PTR, SYMR *))
3033 = debug_swap->swap_sym_in;
3034 char *ext_sym = ((char *) debug_info->external_sym
3035 + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
3045 /* It is an enumerated type if the next symbol entry is a stMember
3046 and its auxiliary index is indexNil or its auxiliary entry
3047 is a plain btNil or btVoid.
3048 Alpha cc -migrate enums are recognized by a zero index and
3049 a zero symbol value. */
3050 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3051 if (sh.st != stMember)
3054 if (sh.index == indexNil
3055 || (sh.index == 0 && svalue == 0))
3057 (*debug_swap->swap_tir_in) (fh->fBigendian,
3058 &(debug_info->external_aux
3059 + fh->iauxBase + sh.index)->a_ti,
3061 if ((tir.bt != btNil && tir.bt != btVoid) || tir.tq0 != tqNil)
3073 (*swap_sym_in) (cur_bfd, ext_sym, &sh);
3074 if (sh.st != stMember)
3076 name = debug_info->ss + cur_fdr->issBase + sh.iss;
3078 /* Note that the value doesn't matter for enum constants
3079 in psymtabs, just in symtabs. */
3080 add_psymbol_to_list (name, strlen (name),
3081 VAR_NAMESPACE, LOC_CONST,
3082 &objfile->static_psymbols, 0,
3083 0, psymtab_language, objfile);
3084 ext_sym += external_sym_size;
3089 mdebug_next_symbol_text (objfile)
3090 struct objfile *objfile; /* argument objfile is currently unused */
3095 (*debug_swap->swap_sym_in) (cur_bfd,
3096 ((char *) debug_info->external_sym
3097 + ((cur_fdr->isymBase + cur_sdx)
3098 * debug_swap->external_sym_size)),
3100 return debug_info->ss + cur_fdr->issBase + sh.iss;
3103 /* Ancillary function to psymtab_to_symtab(). Does all the work
3104 for turning the partial symtab PST into a symtab, recurring
3105 first on all dependent psymtabs. The argument FILENAME is
3106 only passed so we can see in debug stack traces what file
3109 This function has a split personality, based on whether the
3110 symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
3111 The flow of control and even the memory allocation differs. FIXME. */
3114 psymtab_to_symtab_1 (pst, filename)
3115 struct partial_symtab *pst;
3118 bfd_size_type external_sym_size;
3119 bfd_size_type external_pdr_size;
3120 void (*swap_sym_in) PARAMS ((bfd *, PTR, SYMR *));
3121 void (*swap_pdr_in) PARAMS ((bfd *, PTR, PDR *));
3125 struct linetable *lines;
3126 CORE_ADDR lowest_pdr_addr = 0;
3132 /* Read in all partial symbtabs on which this one is dependent.
3133 NOTE that we do have circular dependencies, sigh. We solved
3134 that by setting pst->readin before this point. */
3136 for (i = 0; i < pst->number_of_dependencies; i++)
3137 if (!pst->dependencies[i]->readin)
3139 /* Inform about additional files to be read in. */
3142 fputs_filtered (" ", gdb_stdout);
3144 fputs_filtered ("and ", gdb_stdout);
3146 printf_filtered ("%s...",
3147 pst->dependencies[i]->filename);
3148 wrap_here (""); /* Flush output */
3149 gdb_flush (gdb_stdout);
3151 /* We only pass the filename for debug purposes */
3152 psymtab_to_symtab_1 (pst->dependencies[i],
3153 pst->dependencies[i]->filename);
3156 /* Do nothing if this is a dummy psymtab. */
3158 if (pst->n_global_syms == 0 && pst->n_static_syms == 0
3159 && pst->textlow == 0 && pst->texthigh == 0)
3162 /* Now read the symbols for this symtab */
3164 cur_bfd = CUR_BFD (pst);
3165 debug_swap = DEBUG_SWAP (pst);
3166 debug_info = DEBUG_INFO (pst);
3167 pending_list = PENDING_LIST (pst);
3168 external_sym_size = debug_swap->external_sym_size;
3169 external_pdr_size = debug_swap->external_pdr_size;
3170 swap_sym_in = debug_swap->swap_sym_in;
3171 swap_pdr_in = debug_swap->swap_pdr_in;
3172 current_objfile = pst->objfile;
3173 cur_fd = FDR_IDX (pst);
3174 fh = ((cur_fd == -1)
3176 : debug_info->fdr + cur_fd);
3179 /* See comment in parse_partial_symbols about the @stabs sentinel. */
3180 processing_gcc_compilation = 0;
3181 if (fh != (FDR *) NULL && fh->csym >= 2)
3185 (*swap_sym_in) (cur_bfd,
3186 ((char *) debug_info->external_sym
3187 + (fh->isymBase + 1) * external_sym_size),
3189 if (STREQ (debug_info->ss + fh->issBase + sh.iss,
3192 /* We indicate that this is a GCC compilation so that certain
3193 features will be enabled in stabsread/dbxread. */
3194 processing_gcc_compilation = 2;
3198 if (processing_gcc_compilation != 0)
3201 /* This symbol table contains stabs-in-ecoff entries. */
3203 /* Parse local symbols first */
3205 if (fh->csym <= 2) /* FIXME, this blows psymtab->symtab ptr */
3207 current_objfile = NULL;
3210 for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++)
3216 (*swap_sym_in) (cur_bfd,
3217 (((char *) debug_info->external_sym)
3218 + (fh->isymBase + cur_sdx) * external_sym_size),
3220 name = debug_info->ss + fh->issBase + sh.iss;
3222 if (ECOFF_IS_STAB (&sh))
3224 int type_code = ECOFF_UNMARK_STAB (sh.index);
3226 /* We should never get non N_STAB symbols here, but they
3227 should be harmless, so keep process_one_symbol from
3228 complaining about them. */
3229 if (type_code & N_STAB)
3231 process_one_symbol (type_code, 0, valu, name,
3232 pst->section_offsets, pst->objfile);
3234 if (type_code == N_FUN)
3236 /* Make up special symbol to contain
3237 procedure specific info */
3238 struct mips_extra_func_info *e =
3239 ((struct mips_extra_func_info *)
3240 obstack_alloc (¤t_objfile->symbol_obstack,
3241 sizeof (struct mips_extra_func_info)));
3242 struct symbol *s = new_symbol (MIPS_EFI_SYMBOL_NAME);
3244 memset ((PTR) e, 0, sizeof (struct mips_extra_func_info));
3245 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
3246 SYMBOL_CLASS (s) = LOC_CONST;
3247 SYMBOL_TYPE (s) = mdebug_type_void;
3248 SYMBOL_VALUE (s) = (long) e;
3249 e->pdr.framereg = -1;
3250 add_symbol_to_list (s, &local_symbols);
3253 else if (sh.st == stLabel)
3255 if (sh.index == indexNil)
3257 /* This is what the gcc2_compiled and __gnu_compiled_*
3258 show up as. So don't complain. */
3263 /* Handle encoded stab line number. */
3264 valu += ANOFFSET (pst->section_offsets, SECT_OFF_TEXT);
3265 record_line (current_subfile, sh.index, valu);
3268 else if (sh.st == stProc || sh.st == stStaticProc
3269 || sh.st == stStatic || sh.st == stEnd)
3270 /* These are generated by gcc-2.x, do not complain */
3273 complain (&stab_unknown_complaint, name);
3275 st = end_symtab (pst->texthigh, pst->objfile, SECT_OFF_TEXT);
3278 /* Sort the symbol table now, we are done adding symbols to it.
3279 We must do this before parse_procedure calls lookup_symbol. */
3280 sort_symtab_syms (st);
3282 /* There used to be a call to sort_blocks here, but this should not
3283 be necessary for stabs symtabs. And as sort_blocks modifies the
3284 start address of the GLOBAL_BLOCK to the FIRST_LOCAL_BLOCK,
3285 it did the wrong thing if the first procedure in a file was
3286 generated via asm statements. */
3288 /* Fill in procedure info next. */
3292 struct cleanup *old_chain;
3298 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
3299 old_chain = make_cleanup (free, pr_block);
3301 pdr_ptr = ((char *) debug_info->external_pdr
3302 + fh->ipdFirst * external_pdr_size);
3303 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
3307 pdr_ptr += external_pdr_size, pdr_in++)
3309 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
3311 /* Determine lowest PDR address, the PDRs are not always
3313 if (pdr_in == pr_block)
3314 lowest_pdr_addr = pdr_in->adr;
3315 else if (pdr_in->adr < lowest_pdr_addr)
3316 lowest_pdr_addr = pdr_in->adr;
3320 pdr_in_end = pdr_in + fh->cpd;
3321 for (; pdr_in < pdr_in_end; pdr_in++)
3322 parse_procedure (pdr_in, st, lowest_pdr_addr, pst);
3324 do_cleanups (old_chain);
3329 /* This symbol table contains ordinary ecoff entries. */
3335 /* How many symbols will we need */
3336 /* FIXME, this does not count enum values. */
3337 f_max = pst->n_global_syms + pst->n_static_syms;
3341 st = new_symtab ("unknown", f_max, 0, pst->objfile);
3345 f_max += fh->csym + fh->cpd;
3346 maxlines = 2 * fh->cline;
3347 st = new_symtab (pst->filename, 2 * f_max, maxlines, pst->objfile);
3349 /* The proper language was already determined when building
3350 the psymtab, use it. */
3351 st->language = PST_PRIVATE (pst)->pst_language;
3354 psymtab_language = st->language;
3356 lines = LINETABLE (st);
3358 /* Get a new lexical context */
3360 push_parse_stack ();
3361 top_stack->cur_st = st;
3362 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (st),
3364 BLOCK_START (top_stack->cur_block) = pst->textlow;
3365 BLOCK_END (top_stack->cur_block) = 0;
3366 top_stack->blocktype = stFile;
3367 top_stack->maxsyms = 2 * f_max;
3368 top_stack->cur_type = 0;
3369 top_stack->procadr = 0;
3370 top_stack->numargs = 0;
3371 found_ecoff_debugging_info = 0;
3378 /* Parse local symbols first */
3379 sym_ptr = ((char *) debug_info->external_sym
3380 + fh->isymBase * external_sym_size);
3381 sym_end = sym_ptr + fh->csym * external_sym_size;
3382 while (sym_ptr < sym_end)
3387 (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
3388 c = parse_symbol (&sh,
3389 debug_info->external_aux + fh->iauxBase,
3390 sym_ptr, fh->fBigendian, pst->section_offsets);
3391 sym_ptr += c * external_sym_size;
3394 /* Linenumbers. At the end, check if we can save memory.
3395 parse_lines has to look ahead an arbitrary number of PDR
3396 structures, so we swap them all first. */
3400 struct cleanup *old_chain;
3406 pr_block = (PDR *) xmalloc (fh->cpd * sizeof (PDR));
3408 old_chain = make_cleanup (free, pr_block);
3410 pdr_ptr = ((char *) debug_info->external_pdr
3411 + fh->ipdFirst * external_pdr_size);
3412 pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
3416 pdr_ptr += external_pdr_size, pdr_in++)
3418 (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
3420 /* Determine lowest PDR address, the PDRs are not always
3422 if (pdr_in == pr_block)
3423 lowest_pdr_addr = pdr_in->adr;
3424 else if (pdr_in->adr < lowest_pdr_addr)
3425 lowest_pdr_addr = pdr_in->adr;
3428 parse_lines (fh, pr_block, lines, maxlines, pst, lowest_pdr_addr);
3429 if (lines->nitems < fh->cline)
3430 lines = shrink_linetable (lines);
3432 /* Fill in procedure info next. */
3434 pdr_in_end = pdr_in + fh->cpd;
3435 for (; pdr_in < pdr_in_end; pdr_in++)
3436 parse_procedure (pdr_in, 0, lowest_pdr_addr, pst);
3438 do_cleanups (old_chain);
3442 LINETABLE (st) = lines;
3444 /* .. and our share of externals.
3445 XXX use the global list to speed up things here. how?
3446 FIXME, Maybe quit once we have found the right number of ext's? */
3447 top_stack->cur_st = st;
3448 top_stack->cur_block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (top_stack->cur_st),
3450 top_stack->blocktype = stFile;
3452 = (debug_info->symbolic_header.isymMax
3453 + debug_info->symbolic_header.ipdMax
3454 + debug_info->symbolic_header.iextMax);
3456 ext_ptr = PST_PRIVATE (pst)->extern_tab;
3457 for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
3458 parse_external (ext_ptr, fh->fBigendian, pst->section_offsets);
3460 /* If there are undefined symbols, tell the user.
3461 The alpha has an undefined symbol for every symbol that is
3462 from a shared library, so tell the user only if verbose is on. */
3463 if (info_verbose && n_undef_symbols)
3465 printf_filtered ("File %s contains %d unresolved references:",
3466 st->filename, n_undef_symbols);
3467 printf_filtered ("\n\t%4d variables\n\t%4d procedures\n\t%4d labels\n",
3468 n_undef_vars, n_undef_procs, n_undef_labels);
3469 n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
3476 /* Sort the symbol table now, we are done adding symbols to it.*/
3477 sort_symtab_syms (st);
3482 /* Now link the psymtab and the symtab. */
3485 current_objfile = NULL;
3488 /* Ancillary parsing procedures. */
3490 /* Return 1 if the symbol pointed to by SH has a cross reference
3491 to an opaque aggregate type, else 0. */
3494 has_opaque_xref (fh, sh)
3503 if (sh->index == indexNil)
3506 ax = debug_info->external_aux + fh->iauxBase + sh->index;
3507 (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
3508 if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
3512 (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
3513 if (rn->rfd == 0xfff)
3514 rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
3522 /* Lookup the type at relative index RN. Return it in TPP
3523 if found and in any event come up with its name PNAME.
3524 BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
3525 Return value says how many aux symbols we ate. */
3528 cross_ref (fd, ax, tpp, type_code, pname, bigend, sym_name)
3532 enum type_code type_code; /* Use to alloc new type if none is found. */
3544 struct mdebug_pending *pend;
3546 *tpp = (struct type *)NULL;
3548 (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
3550 /* Escape index means 'the next one' */
3551 if (rn->rfd == 0xfff)
3554 rf = AUX_GET_ISYM (bigend, ax + 1);
3561 /* mips cc uses a rf of -1 for opaque struct definitions.
3562 Set TYPE_FLAG_STUB for these types so that check_typedef will
3563 resolve them if the struct gets defined in another compilation unit. */
3566 *pname = "<undefined>";
3567 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
3568 TYPE_FLAGS (*tpp) |= TYPE_FLAG_STUB;
3572 /* mips cc uses an escaped rn->index of 0 for struct return types
3573 of procedures that were compiled without -g. These will always remain
3575 if (rn->rfd == 0xfff && rn->index == 0)
3577 *pname = "<undefined>";
3581 /* Find the relative file descriptor and the symbol in it. */
3582 fh = get_rfd (fd, rf);
3583 xref_fd = fh - debug_info->fdr;
3585 if (rn->index >= fh->csym)
3587 /* File indirect entry is corrupt. */
3588 *pname = "<illegal>";
3589 complain (&bad_rfd_entry_complaint,
3590 sym_name, xref_fd, rn->index);
3594 /* If we have processed this symbol then we left a forwarding
3595 pointer to the type in the pending list. If not, we`ll put
3596 it in a list of pending types, to be processed later when
3597 the file will be. In any event, we collect the name for the
3600 esh = ((char *) debug_info->external_sym
3601 + ((fh->isymBase + rn->index)
3602 * debug_swap->external_sym_size));
3603 (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
3605 /* Make sure that this type of cross reference can be handled. */
3606 if ((sh.sc != scInfo
3607 || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
3608 && sh.st != stStruct && sh.st != stUnion
3609 && sh.st != stEnum))
3610 && (sh.st != stBlock || (sh.sc != scCommon && sh.sc != scSCommon)))
3612 /* File indirect entry is corrupt. */
3613 *pname = "<illegal>";
3614 complain (&bad_rfd_entry_complaint,
3615 sym_name, xref_fd, rn->index);
3619 *pname = debug_info->ss + fh->issBase + sh.iss;
3621 pend = is_pending_symbol (fh, esh);
3626 /* We have not yet seen this type. */
3628 if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
3632 /* alpha cc puts out a stTypedef with a sh.iss of zero for
3634 a) forward declarations of structs/unions/enums which are not
3635 defined in this compilation unit.
3636 For these the type will be void. This is a bad design decision
3637 as cross referencing across compilation units is impossible
3638 due to the missing name.
3639 b) forward declarations of structs/unions/enums/typedefs which
3640 are defined later in this file or in another file in the same
3641 compilation unit. Irix5 cc uses a stIndirect symbol for this.
3642 Simply cross reference those again to get the true type.
3643 The forward references are not entered in the pending list and
3644 in the symbol table. */
3646 (*debug_swap->swap_tir_in) (bigend,
3647 &(debug_info->external_aux
3648 + fh->iauxBase + sh.index)->a_ti,
3650 if (tir.tq0 != tqNil)
3651 complain (&illegal_forward_tq0_complaint, sym_name);
3655 *tpp = init_type (type_code, 0, 0, (char *) NULL,
3657 *pname = "<undefined>";
3664 (debug_info->external_aux
3665 + fh->iauxBase + sh.index + 1),
3666 tpp, type_code, pname,
3667 fh->fBigendian, sym_name);
3671 /* Follow a forward typedef. This might recursively
3672 call cross_ref till we get a non typedef'ed type.
3673 FIXME: This is not correct behaviour, but gdb currently
3674 cannot handle typedefs without type copying. Type
3675 copying is impossible as we might have mutual forward
3676 references between two files and the copied type would not
3677 get filled in when we later parse its definition. */
3678 *tpp = parse_type (xref_fd,
3679 debug_info->external_aux + fh->iauxBase,
3683 debug_info->ss + fh->issBase + sh.iss);
3684 add_pending (fh, esh, *tpp);
3688 complain (&illegal_forward_bt_complaint, tir.bt, sym_name);
3689 *tpp = init_type (type_code, 0, 0, (char *) NULL,
3695 else if (sh.st == stTypedef)
3697 /* Parse the type for a normal typedef. This might recursively call
3698 cross_ref till we get a non typedef'ed type.
3699 FIXME: This is not correct behaviour, but gdb currently
3700 cannot handle typedefs without type copying. But type copying is
3701 impossible as we might have mutual forward references between
3702 two files and the copied type would not get filled in when
3703 we later parse its definition. */
3704 *tpp = parse_type (xref_fd,
3705 debug_info->external_aux + fh->iauxBase,
3709 debug_info->ss + fh->issBase + sh.iss);
3713 /* Cross reference to a struct/union/enum which is defined
3714 in another file in the same compilation unit but that file
3715 has not been parsed yet.
3716 Initialize the type only, it will be filled in when
3717 it's definition is parsed. */
3718 *tpp = init_type (type_code, 0, 0, (char *) NULL, current_objfile);
3720 add_pending (fh, esh, *tpp);
3723 /* We used one auxent normally, two if we got a "next one" rf. */
3728 /* Quick&dirty lookup procedure, to avoid the MI ones that require
3729 keeping the symtab sorted */
3731 static struct symbol *
3732 mylookup_symbol (name, block, namespace, class)
3734 register struct block *block;
3735 namespace_enum namespace;
3736 enum address_class class;
3738 register int bot, top, inc;
3739 register struct symbol *sym;
3742 top = BLOCK_NSYMS (block);
3746 sym = BLOCK_SYM (block, bot);
3747 if (SYMBOL_NAME (sym)[0] == inc
3748 && SYMBOL_NAMESPACE (sym) == namespace
3749 && SYMBOL_CLASS (sym) == class
3750 && strcmp (SYMBOL_NAME (sym), name) == 0)
3754 block = BLOCK_SUPERBLOCK (block);
3756 return mylookup_symbol (name, block, namespace, class);
3761 /* Add a new symbol S to a block B.
3762 Infrequently, we will need to reallocate the block to make it bigger.
3763 We only detect this case when adding to top_stack->cur_block, since
3764 that's the only time we know how big the block is. FIXME. */
3771 int nsyms = BLOCK_NSYMS (b)++;
3772 struct block *origb;
3773 struct parse_stack *stackp;
3775 if (b == top_stack->cur_block &&
3776 nsyms >= top_stack->maxsyms)
3778 complain (&block_overflow_complaint, SYMBOL_NAME (s));
3779 /* In this case shrink_block is actually grow_block, since
3780 BLOCK_NSYMS(b) is larger than its current size. */
3782 b = shrink_block (top_stack->cur_block, top_stack->cur_st);
3784 /* Now run through the stack replacing pointers to the
3785 original block. shrink_block has already done this
3786 for the blockvector and BLOCK_FUNCTION. */
3787 for (stackp = top_stack; stackp; stackp = stackp->next)
3789 if (stackp->cur_block == origb)
3791 stackp->cur_block = b;
3792 stackp->maxsyms = BLOCK_NSYMS (b);
3796 BLOCK_SYM (b, nsyms) = s;
3799 /* Add a new block B to a symtab S */
3806 struct blockvector *bv = BLOCKVECTOR (s);
3808 bv = (struct blockvector *) xrealloc ((PTR) bv,
3809 (sizeof (struct blockvector)
3810 + BLOCKVECTOR_NBLOCKS (bv)
3811 * sizeof (bv->block)));
3812 if (bv != BLOCKVECTOR (s))
3813 BLOCKVECTOR (s) = bv;
3815 BLOCKVECTOR_BLOCK (bv, BLOCKVECTOR_NBLOCKS (bv)++) = b;
3818 /* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
3819 MIPS' linenumber encoding might need more than one byte
3820 to describe it, LAST is used to detect these continuation lines.
3822 Combining lines with the same line number seems like a bad idea.
3823 E.g: There could be a line number entry with the same line number after the
3824 prologue and GDB should not ignore it (this is a better way to find
3825 a prologue than mips_skip_prologue).
3826 But due to the compressed line table format there are line number entries
3827 for the same line which are needed to bridge the gap to the next
3828 line number entry. These entries have a bogus address info with them
3829 and we are unable to tell them from intended duplicate line number
3831 This is another reason why -ggdb debugging format is preferable. */
3834 add_line (lt, lineno, adr, last)
3835 struct linetable *lt;
3840 /* DEC c89 sometimes produces zero linenos which confuse gdb.
3841 Change them to something sensible. */
3845 last = -2; /* make sure we record first line */
3847 if (last == lineno) /* skip continuation lines */
3850 lt->item[lt->nitems].line = lineno;
3851 lt->item[lt->nitems++].pc = adr << 2;
3855 /* Sorting and reordering procedures */
3857 /* Blocks with a smaller low bound should come first */
3860 compare_blocks (arg1, arg2)
3864 register int addr_diff;
3865 struct block **b1 = (struct block **) arg1;
3866 struct block **b2 = (struct block **) arg2;
3868 addr_diff = (BLOCK_START ((*b1))) - (BLOCK_START ((*b2)));
3870 return (BLOCK_END ((*b2))) - (BLOCK_END ((*b1)));
3874 /* Sort the blocks of a symtab S.
3875 Reorder the blocks in the blockvector by code-address,
3876 as required by some MI search routines */
3882 struct blockvector *bv = BLOCKVECTOR (s);
3884 if (BLOCKVECTOR_NBLOCKS (bv) <= 2)
3887 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) == 0)
3888 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = 0;
3889 if (BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) == 0)
3890 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) = 0;
3894 * This is very unfortunate: normally all functions are compiled in
3895 * the order they are found, but if the file is compiled -O3 things
3896 * are very different. It would be nice to find a reliable test
3897 * to detect -O3 images in advance.
3899 if (BLOCKVECTOR_NBLOCKS (bv) > 3)
3900 qsort (&BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK),
3901 BLOCKVECTOR_NBLOCKS (bv) - FIRST_LOCAL_BLOCK,
3902 sizeof (struct block *),
3906 register CORE_ADDR high = 0;
3907 register int i, j = BLOCKVECTOR_NBLOCKS (bv);
3909 for (i = FIRST_LOCAL_BLOCK; i < j; i++)
3910 if (high < BLOCK_END (BLOCKVECTOR_BLOCK (bv, i)))
3911 high = BLOCK_END (BLOCKVECTOR_BLOCK (bv, i));
3912 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) = high;
3915 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) =
3916 BLOCK_START (BLOCKVECTOR_BLOCK (bv, FIRST_LOCAL_BLOCK));
3918 BLOCK_START (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
3919 BLOCK_START (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
3920 BLOCK_END (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)) =
3921 BLOCK_END (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK));
3925 /* Constructor/restructor/destructor procedures */
3927 /* Allocate a new symtab for NAME. Needs an estimate of how many symbols
3928 MAXSYMS and linenumbers MAXLINES we'll put in it */
3930 static struct symtab *
3931 new_symtab (name, maxsyms, maxlines, objfile)
3935 struct objfile *objfile;
3937 struct symtab *s = allocate_symtab (name, objfile);
3939 LINETABLE (s) = new_linetable (maxlines);
3941 /* All symtabs must have at least two blocks */
3942 BLOCKVECTOR (s) = new_bvect (2);
3943 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK) = new_block (maxsyms);
3944 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) = new_block (maxsyms);
3945 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK)) =
3946 BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
3948 s->free_code = free_linetable;
3953 /* Allocate a new partial_symtab NAME */
3955 static struct partial_symtab *
3956 new_psymtab (name, objfile, section_offsets)
3958 struct objfile *objfile;
3959 struct section_offsets *section_offsets;
3961 struct partial_symtab *psymtab;
3963 psymtab = allocate_psymtab (name, objfile);
3964 psymtab->section_offsets = section_offsets;
3966 /* Keep a backpointer to the file's symbols */
3968 psymtab->read_symtab_private = ((char *)
3969 obstack_alloc (&objfile->psymbol_obstack,
3970 sizeof (struct symloc)));
3971 memset ((PTR) psymtab->read_symtab_private, 0, sizeof (struct symloc));
3972 CUR_BFD (psymtab) = cur_bfd;
3973 DEBUG_SWAP (psymtab) = debug_swap;
3974 DEBUG_INFO (psymtab) = debug_info;
3975 PENDING_LIST (psymtab) = pending_list;
3977 /* The way to turn this into a symtab is to call... */
3978 psymtab->read_symtab = mdebug_psymtab_to_symtab;
3983 /* Allocate a linetable array of the given SIZE. Since the struct
3984 already includes one item, we subtract one when calculating the
3985 proper size to allocate. */
3987 static struct linetable *
3988 new_linetable (size)
3991 struct linetable *l;
3993 size = (size - 1) * sizeof (l->item) + sizeof (struct linetable);
3994 l = (struct linetable *) xmalloc (size);
3999 /* Oops, too big. Shrink it. This was important with the 2.4 linetables,
4000 I am not so sure about the 3.4 ones.
4002 Since the struct linetable already includes one item, we subtract one when
4003 calculating the proper size to allocate. */
4005 static struct linetable *
4006 shrink_linetable (lt)
4007 struct linetable *lt;
4010 return (struct linetable *) xrealloc ((PTR) lt,
4011 (sizeof (struct linetable)
4013 * sizeof (lt->item))));
4016 /* Allocate and zero a new blockvector of NBLOCKS blocks. */
4018 static struct blockvector *
4022 struct blockvector *bv;
4025 size = sizeof (struct blockvector) + nblocks * sizeof (struct block *);
4026 bv = (struct blockvector *) xzalloc (size);
4028 BLOCKVECTOR_NBLOCKS (bv) = nblocks;
4033 /* Allocate and zero a new block of MAXSYMS symbols */
4035 static struct block *
4039 int size = sizeof (struct block) + (maxsyms - 1) * sizeof (struct symbol *);
4041 return (struct block *) xzalloc (size);
4044 /* Ooops, too big. Shrink block B in symtab S to its minimal size.
4045 Shrink_block can also be used by add_symbol to grow a block. */
4047 static struct block *
4053 struct blockvector *bv = BLOCKVECTOR (s);
4056 /* Just reallocate it and fix references to the old one */
4058 new = (struct block *) xrealloc ((PTR) b,
4059 (sizeof (struct block)
4060 + ((BLOCK_NSYMS (b) - 1)
4061 * sizeof (struct symbol *))));
4063 /* Should chase pointers to old one. Fortunately, that`s just
4064 the block`s function and inferior blocks */
4065 if (BLOCK_FUNCTION (new) && SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) == b)
4066 SYMBOL_BLOCK_VALUE (BLOCK_FUNCTION (new)) = new;
4067 for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); i++)
4068 if (BLOCKVECTOR_BLOCK (bv, i) == b)
4069 BLOCKVECTOR_BLOCK (bv, i) = new;
4070 else if (BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) == b)
4071 BLOCK_SUPERBLOCK (BLOCKVECTOR_BLOCK (bv, i)) = new;
4075 /* Create a new symbol with printname NAME */
4077 static struct symbol *
4081 struct symbol *s = ((struct symbol *)
4082 obstack_alloc (¤t_objfile->symbol_obstack,
4083 sizeof (struct symbol)));
4085 memset ((PTR) s, 0, sizeof (*s));
4086 SYMBOL_NAME (s) = name;
4087 SYMBOL_LANGUAGE (s) = psymtab_language;
4088 SYMBOL_INIT_DEMANGLED_NAME (s, ¤t_objfile->symbol_obstack);
4092 /* Create a new type with printname NAME */
4094 static struct type *
4100 t = alloc_type (current_objfile);
4101 TYPE_NAME (t) = name;
4102 TYPE_CPLUS_SPECIFIC (t) = (struct cplus_struct_type *) &cplus_struct_default;
4106 /* Read ECOFF debugging information from a BFD section. This is
4107 called from elfread.c. It parses the section into a
4108 ecoff_debug_info struct, and then lets the rest of the file handle
4112 elfmdebug_build_psymtabs (objfile, swap, sec, section_offsets)
4113 struct objfile *objfile;
4114 const struct ecoff_debug_swap *swap;
4116 struct section_offsets *section_offsets;
4118 bfd *abfd = objfile->obfd;
4119 struct ecoff_debug_info *info;
4121 info = ((struct ecoff_debug_info *)
4122 obstack_alloc (&objfile->psymbol_obstack,
4123 sizeof (struct ecoff_debug_info)));
4125 if (!(*swap->read_debug_info) (abfd, sec, info))
4126 error ("Error reading ECOFF debugging information: %s",
4127 bfd_errmsg (bfd_get_error ()));
4129 mdebug_build_psymtabs (objfile, swap, info, section_offsets);
4133 /* Things used for calling functions in the inferior.
4134 These functions are exported to our companion
4135 mips-tdep.c file and are here because they play
4136 with the symbol-table explicitly. */
4138 /* Sigtramp: make sure we have all the necessary information
4139 about the signal trampoline code. Since the official code
4140 from MIPS does not do so, we make up that information ourselves.
4141 If they fix the library (unlikely) this code will neutralize itself. */
4143 /* FIXME: This function is called only by mips-tdep.c. It needs to be
4144 here because it calls functions defined in this file, but perhaps
4145 this could be handled in a better way. */
4152 struct block *b, *b0 = NULL;
4154 sigtramp_address = -1;
4156 /* We have to handle the following cases here:
4157 a) The Mips library has a sigtramp label within sigvec.
4158 b) Irix has a _sigtramp which we want to use, but it also has sigvec. */
4159 s = lookup_symbol ("sigvec", 0, VAR_NAMESPACE, 0, NULL);
4162 b0 = SYMBOL_BLOCK_VALUE (s);
4163 s = lookup_symbol ("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
4167 /* No sigvec or no sigtramp inside sigvec, try _sigtramp. */
4168 s = lookup_symbol ("_sigtramp", 0, VAR_NAMESPACE, 0, NULL);
4171 /* But maybe this program uses its own version of sigvec */
4175 /* Did we or MIPSco fix the library ? */
4176 if (SYMBOL_CLASS (s) == LOC_BLOCK)
4178 sigtramp_address = BLOCK_START (SYMBOL_BLOCK_VALUE (s));
4179 sigtramp_end = BLOCK_END (SYMBOL_BLOCK_VALUE (s));
4183 sigtramp_address = SYMBOL_VALUE (s);
4184 sigtramp_end = sigtramp_address + 0x88; /* black magic */
4186 /* But what symtab does it live in ? */
4187 st = find_pc_symtab (SYMBOL_VALUE (s));
4190 * Ok, there goes the fix: turn it into a procedure, with all the
4191 * needed info. Note we make it a nested procedure of sigvec,
4192 * which is the way the (assembly) code is actually written.
4194 SYMBOL_NAMESPACE (s) = VAR_NAMESPACE;
4195 SYMBOL_CLASS (s) = LOC_BLOCK;
4196 SYMBOL_TYPE (s) = init_type (TYPE_CODE_FUNC, 4, 0, (char *) NULL,
4198 TYPE_TARGET_TYPE (SYMBOL_TYPE (s)) = mdebug_type_void;
4200 /* Need a block to allocate MIPS_EFI_SYMBOL_NAME in */
4202 SYMBOL_BLOCK_VALUE (s) = b;
4203 BLOCK_START (b) = sigtramp_address;
4204 BLOCK_END (b) = sigtramp_end;
4205 BLOCK_FUNCTION (b) = s;
4206 BLOCK_SUPERBLOCK (b) = BLOCK_SUPERBLOCK (b0);
4210 /* Make a MIPS_EFI_SYMBOL_NAME entry for it */
4212 struct mips_extra_func_info *e =
4213 ((struct mips_extra_func_info *)
4214 xzalloc (sizeof (struct mips_extra_func_info)));
4216 e->numargs = 0; /* the kernel thinks otherwise */
4217 e->pdr.frameoffset = 32;
4218 e->pdr.framereg = SP_REGNUM;
4219 /* Note that setting pcreg is no longer strictly necessary as
4220 mips_frame_saved_pc is now aware of signal handler frames. */
4221 e->pdr.pcreg = PC_REGNUM;
4222 e->pdr.regmask = -2;
4223 /* Offset to saved r31, in the sigtramp case the saved registers
4224 are above the frame in the sigcontext.
4225 We have 4 alignment bytes, 12 bytes for onstack, mask and pc,
4226 32 * 4 bytes for the general registers, 12 bytes for mdhi, mdlo, ownedfp
4227 and 32 * 4 bytes for the floating point registers. */
4228 e->pdr.regoffset = 4 + 12 + 31 * 4;
4229 e->pdr.fregmask = -1;
4230 /* Offset to saved f30 (first saved *double* register). */
4231 e->pdr.fregoffset = 4 + 12 + 32 * 4 + 12 + 30 * 4;
4232 e->pdr.isym = (long) s;
4233 e->pdr.adr = sigtramp_address;
4235 current_objfile = st->objfile; /* Keep new_symbol happy */
4236 s = new_symbol (MIPS_EFI_SYMBOL_NAME);
4237 SYMBOL_VALUE (s) = (long) e;
4238 SYMBOL_NAMESPACE (s) = LABEL_NAMESPACE;
4239 SYMBOL_CLASS (s) = LOC_CONST;
4240 SYMBOL_TYPE (s) = mdebug_type_void;
4241 current_objfile = NULL;
4244 BLOCK_SYM (b, BLOCK_NSYMS (b)++) = s;
4248 _initialize_mdebugread ()
4251 init_type (TYPE_CODE_VOID, 1,
4253 "void", (struct objfile *) NULL);
4255 init_type (TYPE_CODE_INT, 1,
4257 "char", (struct objfile *) NULL);
4258 mdebug_type_unsigned_char =
4259 init_type (TYPE_CODE_INT, 1,
4261 "unsigned char", (struct objfile *) NULL);
4263 init_type (TYPE_CODE_INT, 2,
4265 "short", (struct objfile *) NULL);
4266 mdebug_type_unsigned_short =
4267 init_type (TYPE_CODE_INT, 2,
4269 "unsigned short", (struct objfile *) NULL);
4270 mdebug_type_int_32 =
4271 init_type (TYPE_CODE_INT, 4,
4273 "int", (struct objfile *) NULL);
4274 mdebug_type_unsigned_int_32 =
4275 init_type (TYPE_CODE_INT, 4,
4277 "unsigned int", (struct objfile *) NULL);
4278 mdebug_type_int_64 =
4279 init_type (TYPE_CODE_INT, 8,
4281 "int", (struct objfile *) NULL);
4282 mdebug_type_unsigned_int_64 =
4283 init_type (TYPE_CODE_INT, 8,
4285 "unsigned int", (struct objfile *) NULL);
4286 mdebug_type_long_32 =
4287 init_type (TYPE_CODE_INT, 4,
4289 "long", (struct objfile *) NULL);
4290 mdebug_type_unsigned_long_32 =
4291 init_type (TYPE_CODE_INT, 4,
4293 "unsigned long", (struct objfile *) NULL);
4294 mdebug_type_long_64 =
4295 init_type (TYPE_CODE_INT, 8,
4297 "long", (struct objfile *) NULL);
4298 mdebug_type_unsigned_long_64 =
4299 init_type (TYPE_CODE_INT, 8,
4301 "unsigned long", (struct objfile *) NULL);
4302 mdebug_type_long_long_64 =
4303 init_type (TYPE_CODE_INT, 8,
4305 "long long", (struct objfile *) NULL);
4306 mdebug_type_unsigned_long_long_64 =
4307 init_type (TYPE_CODE_INT, 8,
4309 "unsigned long long", (struct objfile *) NULL);
4310 mdebug_type_adr_32 =
4311 init_type (TYPE_CODE_PTR, 4,
4313 "adr_32", (struct objfile *) NULL);
4314 TYPE_TARGET_TYPE (mdebug_type_adr_32) = mdebug_type_void;
4315 mdebug_type_adr_64 =
4316 init_type (TYPE_CODE_PTR, 8,
4318 "adr_64", (struct objfile *) NULL);
4319 TYPE_TARGET_TYPE (mdebug_type_adr_64) = mdebug_type_void;
4321 init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4323 "float", (struct objfile *) NULL);
4324 mdebug_type_double =
4325 init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4327 "double", (struct objfile *) NULL);
4328 mdebug_type_complex =
4329 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
4331 "complex", (struct objfile *) NULL);
4332 TYPE_TARGET_TYPE (mdebug_type_complex) = mdebug_type_float;
4333 mdebug_type_double_complex =
4334 init_type (TYPE_CODE_COMPLEX, 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4336 "double complex", (struct objfile *) NULL);
4337 TYPE_TARGET_TYPE (mdebug_type_double_complex) = mdebug_type_double;
4339 /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
4341 mdebug_type_string =
4342 init_type (TYPE_CODE_STRING,
4343 TARGET_CHAR_BIT / TARGET_CHAR_BIT,
4345 (struct objfile *) NULL);
4347 /* We use TYPE_CODE_INT to print these as integers. Does this do any
4348 good? Would we be better off with TYPE_CODE_ERROR? Should
4349 TYPE_CODE_ERROR print things in hex if it knows the size? */
4350 mdebug_type_fixed_dec =
4351 init_type (TYPE_CODE_INT,
4352 TARGET_INT_BIT / TARGET_CHAR_BIT,
4354 (struct objfile *) NULL);
4356 mdebug_type_float_dec =
4357 init_type (TYPE_CODE_ERROR,
4358 TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
4359 0, "floating decimal",
4360 (struct objfile *) NULL);
4362 nodebug_func_symbol_type = init_type (TYPE_CODE_FUNC, 1, 0,
4363 "<function, no debug info>", NULL);
4364 TYPE_TARGET_TYPE (nodebug_func_symbol_type) = mdebug_type_int;
4365 nodebug_var_symbol_type =
4366 init_type (TYPE_CODE_INT, TARGET_INT_BIT / HOST_CHAR_BIT, 0,
4367 "<variable, no debug info>", NULL);