* stabs.c (struct stab_handle): Add field abfd.
(start_stab): Add abfd parameter. (parse_stab_string): Skip the symbol leading char when searching for the value of a global symbol. * budbg.h (start_stab): Update declaration. * rddbg.c (read_section_stabs_debugging_info): Pass abfd to start_stab. (read_symbol_stabs_debugging_info): Likewise.
This commit is contained in:
Ian Lance Taylor
parent
c3dffbd7cd
commit
15731fdc0b
3 changed files with 269 additions and 11 deletions
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@ -1,3 +1,27 @@
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Fri Mar 22 15:49:08 1996 Ian Lance Taylor <ian@cygnus.com>
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* stabs.c (struct stab_handle): Add field abfd.
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(start_stab): Add abfd parameter.
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(parse_stab_string): Skip the symbol leading char when searching
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for the value of a global symbol.
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* budbg.h (start_stab): Update declaration.
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* rddbg.c (read_section_stabs_debugging_info): Pass abfd to
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start_stab.
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(read_symbol_stabs_debugging_info): Likewise.
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Thu Mar 21 12:40:48 1996 Ian Lance Taylor <ian@cygnus.com>
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* wrstabs.c (stab_function_type): Output an empty typedef for an
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unused argument, rather than making up a meaningless name.
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(stab_variable): Use N_RSYM for a DEBUG_REGISTER variable.
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* ieee.c (struct ieee_info): Add global_vars field.
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(parse_ieee_be): When ending the global typedef block, copy the
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variables into info->global_vars.
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(parse_ieee_atn): Don't require an NN record for a pmisc ATN.
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(ieee_read_reference): Search the global variables after the local
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variables.
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Wed Mar 20 18:08:19 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
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* objdump.c (disassemble_data): Make sure sym_name is always set.
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@ -32,17 +32,23 @@ extern PTR read_debugging_info PARAMS ((bfd *, asymbol **, long));
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extern boolean print_debugging_info PARAMS ((FILE *, PTR));
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/* Routines used to read stabs information. */
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/* Routines used to read and write stabs information. */
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extern PTR start_stab PARAMS ((PTR, boolean));
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extern PTR start_stab PARAMS ((PTR, bfd *, boolean, asymbol **, long));
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extern boolean finish_stab PARAMS ((PTR, PTR));
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extern boolean parse_stab PARAMS ((PTR, PTR, int, int, bfd_vma, const char *));
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/* Routine used to read IEEE information. */
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extern boolean write_stabs_in_sections_debugging_info
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PARAMS ((bfd *, PTR, bfd_byte **, bfd_size_type *, bfd_byte **,
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bfd_size_type *));
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/* Routines used to read and write IEEE debugging information. */
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extern boolean parse_ieee
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PARAMS ((PTR, bfd *, const bfd_byte *, bfd_size_type));
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extern boolean write_ieee_debugging_info PARAMS ((bfd *, PTR));
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#endif
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242
binutils/rddbg.c
242
binutils/rddbg.c
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@ -1,5 +1,5 @@
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/* rddbg.c -- Read debugging information into a generic form.
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Copyright (C) 1995 Free Software Foundation, Inc.
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Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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Written by Ian Lance Taylor <ian@cygnus.com>.
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This file is part of GNU Binutils.
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@ -30,14 +30,22 @@
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#include "budbg.h"
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static boolean read_section_stabs_debugging_info
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PARAMS ((bfd *, PTR, boolean *));
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PARAMS ((bfd *, asymbol **, long, PTR, boolean *));
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static boolean read_symbol_stabs_debugging_info
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PARAMS ((bfd *, asymbol **, long, PTR, boolean *));
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static boolean read_ieee_debugging_info PARAMS ((bfd *, PTR, boolean *));
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static void save_stab PARAMS ((int, int, bfd_vma, const char *));
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static void stab_context PARAMS ((void));
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static void free_saved_stabs PARAMS ((void));
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/* Read debugging information from a BFD. Returns a generic debugging
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pointer. */
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PTR
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read_debugging_info (abfd)
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read_debugging_info (abfd, syms, symcount)
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bfd *abfd;
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asymbol **syms;
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long symcount;
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{
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PTR dhandle;
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boolean found;
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@ -46,11 +54,25 @@ read_debugging_info (abfd)
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if (dhandle == NULL)
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return NULL;
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/* All we know about right now is stabs in sections. */
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/* All we know about right now is stabs. */
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if (! read_section_stabs_debugging_info (abfd, dhandle, &found))
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if (! read_section_stabs_debugging_info (abfd, syms, symcount, dhandle,
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&found))
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return NULL;
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if (bfd_get_flavour (abfd) == bfd_target_aout_flavour)
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{
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if (! read_symbol_stabs_debugging_info (abfd, syms, symcount, dhandle,
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&found))
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return NULL;
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}
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if (bfd_get_flavour (abfd) == bfd_target_ieee_flavour)
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{
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if (! read_ieee_debugging_info (abfd, dhandle, &found))
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return NULL;
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}
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if (! found)
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{
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fprintf (stderr, "%s: no recognized debugging information\n",
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@ -64,8 +86,10 @@ read_debugging_info (abfd)
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/* Read stabs in sections debugging information from a BFD. */
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static boolean
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read_section_stabs_debugging_info (abfd, dhandle, pfound)
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read_section_stabs_debugging_info (abfd, syms, symcount, dhandle, pfound)
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bfd *abfd;
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asymbol **syms;
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long symcount;
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PTR dhandle;
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boolean *pfound;
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{
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@ -115,7 +139,7 @@ read_section_stabs_debugging_info (abfd, dhandle, pfound)
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if (shandle == NULL)
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{
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shandle = start_stab (dhandle);
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shandle = start_stab (dhandle, abfd, true, syms, symcount);
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if (shandle == NULL)
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return false;
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}
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@ -168,8 +192,14 @@ read_section_stabs_debugging_info (abfd, dhandle, pfound)
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f = s;
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}
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save_stab (type, desc, value, s);
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if (! parse_stab (dhandle, shandle, type, desc, value, s))
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{
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stab_context ();
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free_saved_stabs ();
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return false;
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}
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/* Don't free f, since I think the stabs code
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expects strings to hang around. This should be
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@ -177,6 +207,7 @@ read_section_stabs_debugging_info (abfd, dhandle, pfound)
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}
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}
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free_saved_stabs ();
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free (stabs);
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/* Don't free strings, since I think the stabs code expects
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@ -193,3 +224,200 @@ read_section_stabs_debugging_info (abfd, dhandle, pfound)
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return true;
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}
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/* Read stabs in the symbol table. */
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static boolean
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read_symbol_stabs_debugging_info (abfd, syms, symcount, dhandle, pfound)
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bfd *abfd;
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asymbol **syms;
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long symcount;
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PTR dhandle;
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boolean *pfound;
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{
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PTR shandle;
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asymbol **ps, **symend;
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shandle = NULL;
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symend = syms + symcount;
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for (ps = syms; ps < symend; ps++)
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{
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symbol_info i;
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bfd_get_symbol_info (abfd, *ps, &i);
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if (i.type == '-')
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{
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const char *s;
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char *f;
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if (shandle == NULL)
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{
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shandle = start_stab (dhandle, abfd, false, syms, symcount);
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if (shandle == NULL)
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return false;
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}
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*pfound = true;
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s = i.name;
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while (s[strlen (s) - 1] == '\\'
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&& ps + 1 < symend)
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{
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char *sc, *n;
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++ps;
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sc = xstrdup (s);
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sc[strlen (sc) - 1] = '\0';
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n = concat (sc, bfd_asymbol_name (*ps), (const char *) NULL);
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free (sc);
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if (f != NULL)
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free (f);
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f = n;
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s = n;
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}
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save_stab (i.stab_type, i.stab_desc, i.value, s);
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if (! parse_stab (dhandle, shandle, i.stab_type, i.stab_desc,
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i.value, s))
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{
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stab_context ();
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free_saved_stabs ();
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return false;
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}
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free_saved_stabs ();
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/* Don't free f, since I think the stabs code expects
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strings to hang around. This should be straightened out.
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FIXME. */
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}
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}
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if (shandle != NULL)
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{
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if (! finish_stab (dhandle, shandle))
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return false;
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}
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return true;
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}
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/* Read IEEE debugging information. */
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static boolean
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read_ieee_debugging_info (abfd, dhandle, pfound)
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bfd *abfd;
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PTR dhandle;
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boolean *pfound;
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{
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asection *dsec;
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bfd_size_type size;
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bfd_byte *contents;
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/* The BFD backend puts the debugging information into a section
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named .debug. */
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dsec = bfd_get_section_by_name (abfd, ".debug");
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if (dsec == NULL)
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return true;
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size = bfd_section_size (abfd, dsec);
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contents = (bfd_byte *) xmalloc (size);
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if (! bfd_get_section_contents (abfd, dsec, contents, 0, size))
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return false;
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if (! parse_ieee (dhandle, abfd, contents, size))
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return false;
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free (contents);
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*pfound = true;
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return true;
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}
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/* Record stabs strings, so that we can give some context for errors. */
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#define SAVE_STABS_COUNT (16)
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struct saved_stab
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{
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int type;
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int desc;
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bfd_vma value;
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char *string;
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};
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static struct saved_stab saved_stabs[SAVE_STABS_COUNT];
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static int saved_stabs_index;
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/* Save a stabs string. */
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static void
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save_stab (type, desc, value, string)
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int type;
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int desc;
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bfd_vma value;
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const char *string;
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{
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if (saved_stabs[saved_stabs_index].string != NULL)
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free (saved_stabs[saved_stabs_index].string);
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saved_stabs[saved_stabs_index].type = type;
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saved_stabs[saved_stabs_index].desc = desc;
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saved_stabs[saved_stabs_index].value = value;
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saved_stabs[saved_stabs_index].string = xstrdup (string);
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saved_stabs_index = (saved_stabs_index + 1) % SAVE_STABS_COUNT;
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}
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/* Provide context for an error. */
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static void
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stab_context ()
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{
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int i;
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fprintf (stderr, "Last stabs entries before error:\n");
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fprintf (stderr, "n_type n_desc n_value string\n");
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i = saved_stabs_index;
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do
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{
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struct saved_stab *stabp;
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stabp = saved_stabs + i;
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if (stabp->string != NULL)
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{
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const char *s;
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s = bfd_get_stab_name (stabp->type);
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if (s != NULL)
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fprintf (stderr, "%-6s", s);
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else if (stabp->type == 0)
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fprintf (stderr, "HdrSym");
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else
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fprintf (stderr, "%-6d", stabp->type);
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fprintf (stderr, " %-6d ", stabp->desc);
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fprintf_vma (stderr, stabp->value);
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if (stabp->type != 0)
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fprintf (stderr, " %s", stabp->string);
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fprintf (stderr, "\n");
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}
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i = (i + 1) % SAVE_STABS_COUNT;
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}
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while (i != saved_stabs_index);
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}
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/* Free the saved stab strings. */
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static void
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free_saved_stabs ()
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{
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int i;
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for (i = 0; i < SAVE_STABS_COUNT; i++)
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if (saved_stabs[i].string != NULL)
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free (saved_stabs[i].string);
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saved_stabs_index = 0;
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}
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