1999-04-16 03:35:26 +02:00
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/* Read HP PA/Risc object files for GDB.
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1999-06-07 21:19:32 +02:00
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Copyright 1991, 1992, 1996, 1999 Free Software Foundation, Inc.
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1999-04-16 03:35:26 +02:00
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Written by Fred Fish at Cygnus Support.
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1999-07-07 22:19:36 +02:00
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This file is part of GDB.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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1999-04-16 03:35:26 +02:00
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#include "defs.h"
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#include "bfd.h"
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#include <syms.h>
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#include "symtab.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "buildsym.h"
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#include "stabsread.h"
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#include "gdb-stabs.h"
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#include "complaints.h"
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#include "gdb_string.h"
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#include "demangle.h"
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#include "som.h"
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#include "libhppa.h"
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/* Various things we might complain about... */
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static void
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som_symfile_init PARAMS ((struct objfile *));
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static void
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som_new_init PARAMS ((struct objfile *));
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static void
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1999-08-09 23:36:23 +02:00
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som_symfile_read PARAMS ((struct objfile *, int));
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1999-04-16 03:35:26 +02:00
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static void
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som_symfile_finish PARAMS ((struct objfile *));
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static void
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som_symtab_read PARAMS ((bfd *, struct objfile *,
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struct section_offsets *));
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static struct section_offsets *
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1999-08-09 23:36:23 +02:00
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som_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
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1999-04-16 03:35:26 +02:00
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/* FIXME: These should really be in a common header somewhere */
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extern void
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hpread_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int));
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extern void
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hpread_symfile_finish PARAMS ((struct objfile *));
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extern void
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hpread_symfile_init PARAMS ((struct objfile *));
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extern void
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do_pxdb PARAMS ((bfd *));
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/*
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1999-07-07 22:19:36 +02:00
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LOCAL FUNCTION
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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som_symtab_read -- read the symbol table of a SOM file
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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SYNOPSIS
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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void som_symtab_read (bfd *abfd, struct objfile *objfile,
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struct section_offsets *section_offsets)
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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DESCRIPTION
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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Given an open bfd, a base address to relocate symbols to, and a
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flag that specifies whether or not this bfd is for an executable
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or not (may be shared library for example), add all the global
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function and data symbols to the minimal symbol table.
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*/
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1999-04-16 03:35:26 +02:00
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static void
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som_symtab_read (abfd, objfile, section_offsets)
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bfd *abfd;
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struct objfile *objfile;
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struct section_offsets *section_offsets;
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{
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unsigned int number_of_symbols;
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int val, dynamic;
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char *stringtab;
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asection *shlib_info;
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struct symbol_dictionary_record *buf, *bufp, *endbufp;
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char *symname;
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CONST int symsize = sizeof (struct symbol_dictionary_record);
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CORE_ADDR text_offset, data_offset;
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text_offset = ANOFFSET (section_offsets, 0);
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data_offset = ANOFFSET (section_offsets, 1);
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number_of_symbols = bfd_get_symcount (abfd);
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buf = alloca (symsize * number_of_symbols);
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bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET);
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val = bfd_read (buf, symsize * number_of_symbols, 1, abfd);
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if (val != symsize * number_of_symbols)
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error ("Couldn't read symbol dictionary!");
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stringtab = alloca (obj_som_stringtab_size (abfd));
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bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET);
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val = bfd_read (stringtab, obj_som_stringtab_size (abfd), 1, abfd);
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if (val != obj_som_stringtab_size (abfd))
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error ("Can't read in HP string table.");
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/* We need to determine if objfile is a dynamic executable (so we
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can do the right thing for ST_ENTRY vs ST_CODE symbols).
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There's nothing in the header which easily allows us to do
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this. The only reliable way I know of is to check for the
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existance of a $SHLIB_INFO$ section with a non-zero size. */
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/* The code below is not a reliable way to check whether an
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* executable is dynamic, so I commented it out - RT
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* shlib_info = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");
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* if (shlib_info)
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* dynamic = (bfd_section_size (objfile->obfd, shlib_info) != 0);
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* else
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* dynamic = 0;
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*/
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/* I replaced the code with a simple check for text offset not being
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* zero. Still not 100% reliable, but a more reliable way of asking
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* "is this a dynamic executable?" than the above. RT
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*/
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dynamic = (text_offset != 0);
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endbufp = buf + number_of_symbols;
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for (bufp = buf; bufp < endbufp; ++bufp)
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{
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enum minimal_symbol_type ms_type;
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QUIT;
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switch (bufp->symbol_scope)
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{
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case SS_UNIVERSAL:
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case SS_EXTERNAL:
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switch (bufp->symbol_type)
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{
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case ST_SYM_EXT:
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case ST_ARG_EXT:
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continue;
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case ST_CODE:
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case ST_PRI_PROG:
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case ST_SEC_PROG:
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case ST_MILLICODE:
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symname = bufp->name.n_strx + stringtab;
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ms_type = mst_text;
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bufp->symbol_value += text_offset;
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#ifdef SMASH_TEXT_ADDRESS
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SMASH_TEXT_ADDRESS (bufp->symbol_value);
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#endif
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break;
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case ST_ENTRY:
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symname = bufp->name.n_strx + stringtab;
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/* For a dynamic executable, ST_ENTRY symbols are
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1999-07-07 22:19:36 +02:00
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the stubs, while the ST_CODE symbol is the real
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function. */
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1999-04-16 03:35:26 +02:00
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if (dynamic)
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ms_type = mst_solib_trampoline;
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else
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ms_type = mst_text;
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bufp->symbol_value += text_offset;
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#ifdef SMASH_TEXT_ADDRESS
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SMASH_TEXT_ADDRESS (bufp->symbol_value);
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#endif
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break;
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case ST_STUB:
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symname = bufp->name.n_strx + stringtab;
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ms_type = mst_solib_trampoline;
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bufp->symbol_value += text_offset;
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#ifdef SMASH_TEXT_ADDRESS
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SMASH_TEXT_ADDRESS (bufp->symbol_value);
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#endif
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break;
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case ST_DATA:
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symname = bufp->name.n_strx + stringtab;
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bufp->symbol_value += data_offset;
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ms_type = mst_data;
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break;
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default:
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continue;
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}
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break;
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#if 0
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/* SS_GLOBAL and SS_LOCAL are two names for the same thing (!). */
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case SS_GLOBAL:
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#endif
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case SS_LOCAL:
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switch (bufp->symbol_type)
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{
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case ST_SYM_EXT:
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case ST_ARG_EXT:
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continue;
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case ST_CODE:
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symname = bufp->name.n_strx + stringtab;
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ms_type = mst_file_text;
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bufp->symbol_value += text_offset;
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#ifdef SMASH_TEXT_ADDRESS
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SMASH_TEXT_ADDRESS (bufp->symbol_value);
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#endif
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check_strange_names:
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/* Utah GCC 2.5, FSF GCC 2.6 and later generate correct local
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1999-07-07 22:19:36 +02:00
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label prefixes for stabs, constant data, etc. So we need
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only filter out L$ symbols which are left in due to
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limitations in how GAS generates SOM relocations.
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When linking in the HPUX C-library the HP linker has
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the nasty habit of placing section symbols from the literal
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subspaces in the middle of the program's text. Filter
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those out as best we can. Check for first and last character
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being '$'.
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And finally, the newer HP compilers emit crud like $PIC_foo$N
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in some circumstance (PIC code I guess). It's also claimed
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that they emit D$ symbols too. What stupidity. */
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1999-04-16 03:35:26 +02:00
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if ((symname[0] == 'L' && symname[1] == '$')
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1999-07-07 22:19:36 +02:00
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|| (symname[0] == '$' && symname[strlen (symname) - 1] == '$')
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1999-04-16 03:35:26 +02:00
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|| (symname[0] == 'D' && symname[1] == '$')
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|| (strncmp (symname, "$PIC", 4) == 0))
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continue;
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break;
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case ST_PRI_PROG:
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case ST_SEC_PROG:
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case ST_MILLICODE:
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symname = bufp->name.n_strx + stringtab;
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ms_type = mst_file_text;
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bufp->symbol_value += text_offset;
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#ifdef SMASH_TEXT_ADDRESS
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SMASH_TEXT_ADDRESS (bufp->symbol_value);
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#endif
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break;
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case ST_ENTRY:
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symname = bufp->name.n_strx + stringtab;
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/* For a dynamic executable, ST_ENTRY symbols are
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1999-07-07 22:19:36 +02:00
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the stubs, while the ST_CODE symbol is the real
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function. */
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1999-04-16 03:35:26 +02:00
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if (dynamic)
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ms_type = mst_solib_trampoline;
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else
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ms_type = mst_file_text;
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bufp->symbol_value += text_offset;
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#ifdef SMASH_TEXT_ADDRESS
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SMASH_TEXT_ADDRESS (bufp->symbol_value);
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#endif
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break;
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case ST_STUB:
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symname = bufp->name.n_strx + stringtab;
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ms_type = mst_solib_trampoline;
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bufp->symbol_value += text_offset;
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#ifdef SMASH_TEXT_ADDRESS
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SMASH_TEXT_ADDRESS (bufp->symbol_value);
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#endif
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break;
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case ST_DATA:
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symname = bufp->name.n_strx + stringtab;
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bufp->symbol_value += data_offset;
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ms_type = mst_file_data;
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goto check_strange_names;
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default:
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continue;
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}
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break;
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|
1999-07-07 22:19:36 +02:00
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/* This can happen for common symbols when -E is passed to the
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final link. No idea _why_ that would make the linker force
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common symbols to have an SS_UNSAT scope, but it does.
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1999-04-16 03:35:26 +02:00
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1999-07-07 22:19:36 +02:00
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This also happens for weak symbols, but their type is
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ST_DATA. */
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1999-04-16 03:35:26 +02:00
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case SS_UNSAT:
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switch (bufp->symbol_type)
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{
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1999-07-07 22:19:36 +02:00
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case ST_STORAGE:
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case ST_DATA:
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symname = bufp->name.n_strx + stringtab;
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|
|
|
bufp->symbol_value += data_offset;
|
|
|
|
|
ms_type = mst_data;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
continue;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (bufp->name.n_strx > obj_som_stringtab_size (abfd))
|
|
|
|
|
error ("Invalid symbol data; bad HP string table offset: %d",
|
|
|
|
|
bufp->name.n_strx);
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
prim_record_minimal_symbol (symname, bufp->symbol_value, ms_type,
|
1999-04-16 03:35:26 +02:00
|
|
|
|
objfile);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Scan and build partial symbols for a symbol file.
|
|
|
|
|
We have been initialized by a call to som_symfile_init, which
|
|
|
|
|
currently does nothing.
|
|
|
|
|
|
|
|
|
|
SECTION_OFFSETS is a set of offsets to apply to relocate the symbols
|
|
|
|
|
in each section. This is ignored, as it isn't needed for SOM.
|
|
|
|
|
|
|
|
|
|
MAINLINE is true if we are reading the main symbol
|
|
|
|
|
table (as opposed to a shared lib or dynamically loaded file).
|
|
|
|
|
|
|
|
|
|
This function only does the minimum work necessary for letting the
|
|
|
|
|
user "name" things symbolically; it does not read the entire symtab.
|
|
|
|
|
Instead, it reads the external and static symbols and puts them in partial
|
|
|
|
|
symbol tables. When more extensive information is requested of a
|
|
|
|
|
file, the corresponding partial symbol table is mutated into a full
|
|
|
|
|
fledged symbol table by going back and reading the symbols
|
|
|
|
|
for real.
|
|
|
|
|
|
|
|
|
|
We look for sections with specific names, to tell us what debug
|
|
|
|
|
format to look for: FIXME!!!
|
|
|
|
|
|
|
|
|
|
somstab_build_psymtabs() handles STABS symbols.
|
|
|
|
|
|
|
|
|
|
Note that SOM files have a "minimal" symbol table, which is vaguely
|
|
|
|
|
reminiscent of a COFF symbol table, but has only the minimal information
|
|
|
|
|
necessary for linking. We process this also, and use the information to
|
|
|
|
|
build gdb's minimal symbol table. This gives us some minimal debugging
|
|
|
|
|
capability even for files compiled without -g. */
|
|
|
|
|
|
|
|
|
|
static void
|
1999-08-09 23:36:23 +02:00
|
|
|
|
som_symfile_read (objfile, mainline)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
struct objfile *objfile;
|
|
|
|
|
int mainline;
|
|
|
|
|
{
|
|
|
|
|
bfd *abfd = objfile->obfd;
|
|
|
|
|
struct cleanup *back_to;
|
|
|
|
|
|
|
|
|
|
do_pxdb (symfile_bfd_open (objfile->name));
|
|
|
|
|
|
|
|
|
|
init_minimal_symbol_collection ();
|
|
|
|
|
back_to = make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0);
|
|
|
|
|
|
|
|
|
|
/* Read in the import list and the export list. Currently
|
|
|
|
|
the export list isn't used; the import list is used in
|
|
|
|
|
hp-symtab-read.c to handle static vars declared in other
|
|
|
|
|
shared libraries. */
|
|
|
|
|
init_import_symbols (objfile);
|
1999-07-07 22:19:36 +02:00
|
|
|
|
#if 0 /* Export symbols not used today 1997-08-05 */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
init_export_symbols (objfile);
|
|
|
|
|
#else
|
|
|
|
|
objfile->export_list = NULL;
|
|
|
|
|
objfile->export_list_size = 0;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Process the normal SOM symbol table first.
|
|
|
|
|
This reads in the DNTT and string table, but doesn't
|
|
|
|
|
actually scan the DNTT. It does scan the linker symbol
|
|
|
|
|
table and thus build up a "minimal symbol table". */
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
|
som_symtab_read (abfd, objfile, objfile->section_offsets);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* Now read information from the stabs debug sections.
|
|
|
|
|
This is a no-op for SOM.
|
|
|
|
|
Perhaps it is intended for some kind of mixed STABS/SOM
|
1999-07-07 22:19:36 +02:00
|
|
|
|
situation? */
|
1999-08-09 23:36:23 +02:00
|
|
|
|
stabsect_build_psymtabs (objfile, mainline,
|
1999-04-16 03:35:26 +02:00
|
|
|
|
"$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
|
|
|
|
|
|
|
|
|
|
/* Now read the native debug information.
|
|
|
|
|
This builds the psymtab. This used to be done via a scan of
|
|
|
|
|
the DNTT, but is now done via the PXDB-built quick-lookup tables
|
|
|
|
|
together with a scan of the GNTT. See hp-psymtab-read.c. */
|
1999-08-09 23:36:23 +02:00
|
|
|
|
hpread_build_psymtabs (objfile, objfile->section_offsets, mainline);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* Install any minimal symbols that have been collected as the current
|
|
|
|
|
minimal symbols for this objfile.
|
|
|
|
|
Further symbol-reading is done incrementally, file-by-file,
|
|
|
|
|
in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c
|
|
|
|
|
contains the code to do the actual DNTT scanning and symtab building. */
|
|
|
|
|
install_minimal_symbols (objfile);
|
|
|
|
|
|
|
|
|
|
/* Force hppa-tdep.c to re-read the unwind descriptors. */
|
|
|
|
|
objfile->obj_private = NULL;
|
|
|
|
|
do_cleanups (back_to);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Initialize anything that needs initializing when a completely new symbol
|
|
|
|
|
file is specified (not just adding some symbols from another file, e.g. a
|
|
|
|
|
shared library).
|
|
|
|
|
|
|
|
|
|
We reinitialize buildsym, since we may be reading stabs from a SOM file. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
som_new_init (ignore)
|
|
|
|
|
struct objfile *ignore;
|
|
|
|
|
{
|
|
|
|
|
stabsread_new_init ();
|
|
|
|
|
buildsym_new_init ();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Perform any local cleanups required when we are done with a particular
|
|
|
|
|
objfile. I.E, we are in the process of discarding all symbol information
|
|
|
|
|
for an objfile, freeing up all memory held for it, and unlinking the
|
|
|
|
|
objfile struct from the global list of known objfiles. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
som_symfile_finish (objfile)
|
|
|
|
|
struct objfile *objfile;
|
|
|
|
|
{
|
1999-07-07 22:19:36 +02:00
|
|
|
|
if (objfile->sym_stab_info != NULL)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
1999-07-07 22:19:36 +02:00
|
|
|
|
mfree (objfile->md, objfile->sym_stab_info);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
hpread_symfile_finish (objfile);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* SOM specific initialization routine for reading symbols. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
som_symfile_init (objfile)
|
|
|
|
|
struct objfile *objfile;
|
|
|
|
|
{
|
|
|
|
|
/* SOM objects may be reordered, so set OBJF_REORDERED. If we
|
|
|
|
|
find this causes a significant slowdown in gdb then we could
|
|
|
|
|
set it in the debug symbol readers only when necessary. */
|
|
|
|
|
objfile->flags |= OBJF_REORDERED;
|
|
|
|
|
hpread_symfile_init (objfile);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* SOM specific parsing routine for section offsets.
|
|
|
|
|
|
|
|
|
|
Plain and simple for now. */
|
|
|
|
|
|
|
|
|
|
static struct section_offsets *
|
|
|
|
|
som_symfile_offsets (objfile, addr)
|
|
|
|
|
struct objfile *objfile;
|
|
|
|
|
CORE_ADDR addr;
|
|
|
|
|
{
|
|
|
|
|
struct section_offsets *section_offsets;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
objfile->num_sections = SECT_OFF_MAX;
|
|
|
|
|
section_offsets = (struct section_offsets *)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* First see if we're a shared library. If so, get the section
|
|
|
|
|
offsets from the library, else get them from addr. */
|
|
|
|
|
if (!som_solib_section_offsets (objfile, section_offsets))
|
|
|
|
|
{
|
|
|
|
|
for (i = 0; i < SECT_OFF_MAX; i++)
|
|
|
|
|
ANOFFSET (section_offsets, i) = addr;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return section_offsets;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Read in and initialize the SOM import list which is present
|
|
|
|
|
for all executables and shared libraries. The import list
|
|
|
|
|
consists of the symbols that are referenced in OBJFILE but
|
|
|
|
|
not defined there. (Variables that are imported are dealt
|
|
|
|
|
with as "loc_indirect" vars.)
|
|
|
|
|
Return value = number of import symbols read in. */
|
|
|
|
|
int
|
|
|
|
|
init_import_symbols (objfile)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
struct objfile *objfile;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
unsigned int import_list;
|
|
|
|
|
unsigned int import_list_size;
|
|
|
|
|
unsigned int string_table;
|
|
|
|
|
unsigned int string_table_size;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
char *string_buffer;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
register int i;
|
|
|
|
|
register int j;
|
|
|
|
|
register int k;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
asection *text_section; /* section handle */
|
|
|
|
|
unsigned int dl_header[12]; /* SOM executable header */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* A struct for an entry in the SOM import list */
|
1999-07-07 22:19:36 +02:00
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
int name; /* index into the string table */
|
|
|
|
|
short dont_care1; /* we don't use this */
|
|
|
|
|
unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */
|
|
|
|
|
unsigned int reserved2:8; /* not used */
|
|
|
|
|
}
|
|
|
|
|
SomImportEntry;
|
|
|
|
|
|
|
|
|
|
/* We read 100 entries in at a time from the disk file. */
|
|
|
|
|
#define SOM_READ_IMPORTS_NUM 100
|
|
|
|
|
#define SOM_READ_IMPORTS_CHUNK_SIZE (sizeof (SomImportEntry) * SOM_READ_IMPORTS_NUM)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
SomImportEntry buffer[SOM_READ_IMPORTS_NUM];
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
|
/* Initialize in case we error out */
|
|
|
|
|
objfile->import_list = NULL;
|
|
|
|
|
objfile->import_list_size = 0;
|
|
|
|
|
|
|
|
|
|
/* It doesn't work, for some reason, to read in space $TEXT$;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");
|
|
|
|
|
if (!text_section)
|
|
|
|
|
return 0;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Get the SOM executable header */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int));
|
|
|
|
|
|
|
|
|
|
/* Check header version number for 10.x HP-UX */
|
|
|
|
|
/* Currently we deal only with 10.x systems; on 9.x the version # is 89060912.
|
1999-07-07 22:19:36 +02:00
|
|
|
|
FIXME: Change for future HP-UX releases and mods to the SOM executable format */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
if (dl_header[0] != 93092112)
|
|
|
|
|
return 0;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
|
|
|
|
import_list = dl_header[4];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
import_list_size = dl_header[5];
|
|
|
|
|
if (!import_list_size)
|
|
|
|
|
return 0;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
string_table = dl_header[10];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
string_table_size = dl_header[11];
|
|
|
|
|
if (!string_table_size)
|
|
|
|
|
return 0;
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Suck in SOM string table */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
string_buffer = (char *) xmalloc (string_table_size);
|
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, string_buffer,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
string_table, string_table_size);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* Allocate import list in the psymbol obstack; this has nothing
|
|
|
|
|
to do with psymbols, just a matter of convenience. We want the
|
1999-07-07 22:19:36 +02:00
|
|
|
|
import list to be freed when the objfile is deallocated */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
objfile->import_list
|
|
|
|
|
= (ImportEntry *) obstack_alloc (&objfile->psymbol_obstack,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
import_list_size * sizeof (ImportEntry));
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Read in the import entries, a bunch at a time */
|
|
|
|
|
for (j = 0, k = 0;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
j < (import_list_size / SOM_READ_IMPORTS_NUM);
|
|
|
|
|
j++)
|
|
|
|
|
{
|
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, buffer,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
import_list + j * SOM_READ_IMPORTS_CHUNK_SIZE,
|
|
|
|
|
SOM_READ_IMPORTS_CHUNK_SIZE);
|
|
|
|
|
for (i = 0; i < SOM_READ_IMPORTS_NUM; i++, k++)
|
|
|
|
|
{
|
|
|
|
|
if (buffer[i].type != (unsigned char) 0)
|
|
|
|
|
{
|
|
|
|
|
objfile->import_list[k]
|
|
|
|
|
= (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1);
|
|
|
|
|
strcpy (objfile->import_list[k], string_buffer + buffer[i].name);
|
|
|
|
|
/* Some day we might want to record the type and other information too */
|
|
|
|
|
}
|
|
|
|
|
else /* null type */
|
|
|
|
|
objfile->import_list[k] = NULL;
|
|
|
|
|
|
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Get the leftovers */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
if (k < import_list_size)
|
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, buffer,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
import_list + k * sizeof (SomImportEntry),
|
|
|
|
|
(import_list_size - k) * sizeof (SomImportEntry));
|
|
|
|
|
for (i = 0; k < import_list_size; i++, k++)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
if (buffer[i].type != (unsigned char) 0)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
{
|
|
|
|
|
objfile->import_list[k]
|
|
|
|
|
= (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1);
|
|
|
|
|
strcpy (objfile->import_list[k], string_buffer + buffer[i].name);
|
|
|
|
|
/* Some day we might want to record the type and other information too */
|
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
else
|
1999-07-07 22:19:36 +02:00
|
|
|
|
objfile->import_list[k] = NULL;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
objfile->import_list_size = import_list_size;
|
|
|
|
|
free (string_buffer);
|
|
|
|
|
return import_list_size;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Read in and initialize the SOM export list which is present
|
|
|
|
|
for all executables and shared libraries. The import list
|
|
|
|
|
consists of the symbols that are referenced in OBJFILE but
|
|
|
|
|
not defined there. (Variables that are imported are dealt
|
|
|
|
|
with as "loc_indirect" vars.)
|
|
|
|
|
Return value = number of import symbols read in. */
|
|
|
|
|
int
|
|
|
|
|
init_export_symbols (objfile)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
struct objfile *objfile;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
unsigned int export_list;
|
|
|
|
|
unsigned int export_list_size;
|
|
|
|
|
unsigned int string_table;
|
|
|
|
|
unsigned int string_table_size;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
char *string_buffer;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
register int i;
|
|
|
|
|
register int j;
|
|
|
|
|
register int k;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
asection *text_section; /* section handle */
|
|
|
|
|
unsigned int dl_header[12]; /* SOM executable header */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* A struct for an entry in the SOM export list */
|
1999-07-07 22:19:36 +02:00
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
int next; /* for hash table use -- we don't use this */
|
|
|
|
|
int name; /* index into string table */
|
|
|
|
|
int value; /* offset or plabel */
|
|
|
|
|
int dont_care1; /* not used */
|
|
|
|
|
unsigned char type; /* 0 = NULL, 2 = Data, 3 = Code, 7 = Storage, 13 = Plabel */
|
|
|
|
|
char dont_care2; /* not used */
|
|
|
|
|
short dont_care3; /* not used */
|
|
|
|
|
}
|
|
|
|
|
SomExportEntry;
|
|
|
|
|
|
|
|
|
|
/* We read 100 entries in at a time from the disk file. */
|
|
|
|
|
#define SOM_READ_EXPORTS_NUM 100
|
|
|
|
|
#define SOM_READ_EXPORTS_CHUNK_SIZE (sizeof (SomExportEntry) * SOM_READ_EXPORTS_NUM)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
SomExportEntry buffer[SOM_READ_EXPORTS_NUM];
|
|
|
|
|
|
|
|
|
|
/* Initialize in case we error out */
|
|
|
|
|
objfile->export_list = NULL;
|
|
|
|
|
objfile->export_list_size = 0;
|
|
|
|
|
|
|
|
|
|
/* It doesn't work, for some reason, to read in space $TEXT$;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
the subspace $SHLIB_INFO$ has to be used. Some BFD quirk? pai/1997-08-05 */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
text_section = bfd_get_section_by_name (objfile->obfd, "$SHLIB_INFO$");
|
|
|
|
|
if (!text_section)
|
|
|
|
|
return 0;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Get the SOM executable header */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, dl_header, 0, 12 * sizeof (int));
|
|
|
|
|
|
|
|
|
|
/* Check header version number for 10.x HP-UX */
|
|
|
|
|
/* Currently we deal only with 10.x systems; on 9.x the version # is 89060912.
|
1999-07-07 22:19:36 +02:00
|
|
|
|
FIXME: Change for future HP-UX releases and mods to the SOM executable format */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
if (dl_header[0] != 93092112)
|
|
|
|
|
return 0;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
|
|
|
|
export_list = dl_header[8];
|
|
|
|
|
export_list_size = dl_header[9];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
if (!export_list_size)
|
|
|
|
|
return 0;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
string_table = dl_header[10];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
string_table_size = dl_header[11];
|
|
|
|
|
if (!string_table_size)
|
|
|
|
|
return 0;
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Suck in SOM string table */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
string_buffer = (char *) xmalloc (string_table_size);
|
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, string_buffer,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
string_table, string_table_size);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* Allocate export list in the psymbol obstack; this has nothing
|
|
|
|
|
to do with psymbols, just a matter of convenience. We want the
|
1999-07-07 22:19:36 +02:00
|
|
|
|
export list to be freed when the objfile is deallocated */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
objfile->export_list
|
1999-07-07 22:19:36 +02:00
|
|
|
|
= (ExportEntry *) obstack_alloc (&objfile->psymbol_obstack,
|
|
|
|
|
export_list_size * sizeof (ExportEntry));
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Read in the export entries, a bunch at a time */
|
|
|
|
|
for (j = 0, k = 0;
|
1999-04-16 03:35:26 +02:00
|
|
|
|
j < (export_list_size / SOM_READ_EXPORTS_NUM);
|
|
|
|
|
j++)
|
|
|
|
|
{
|
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, buffer,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
export_list + j * SOM_READ_EXPORTS_CHUNK_SIZE,
|
|
|
|
|
SOM_READ_EXPORTS_CHUNK_SIZE);
|
|
|
|
|
for (i = 0; i < SOM_READ_EXPORTS_NUM; i++, k++)
|
|
|
|
|
{
|
|
|
|
|
if (buffer[i].type != (unsigned char) 0)
|
|
|
|
|
{
|
|
|
|
|
objfile->export_list[k].name
|
|
|
|
|
= (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1);
|
|
|
|
|
strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name);
|
|
|
|
|
objfile->export_list[k].address = buffer[i].value;
|
|
|
|
|
/* Some day we might want to record the type and other information too */
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
/* null type */
|
|
|
|
|
{
|
|
|
|
|
objfile->export_list[k].name = NULL;
|
|
|
|
|
objfile->export_list[k].address = 0;
|
|
|
|
|
}
|
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* Get the leftovers */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
if (k < export_list_size)
|
|
|
|
|
bfd_get_section_contents (objfile->obfd, text_section, buffer,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
export_list + k * sizeof (SomExportEntry),
|
|
|
|
|
(export_list_size - k) * sizeof (SomExportEntry));
|
|
|
|
|
for (i = 0; k < export_list_size; i++, k++)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
{
|
|
|
|
|
if (buffer[i].type != (unsigned char) 0)
|
1999-07-07 22:19:36 +02:00
|
|
|
|
{
|
|
|
|
|
objfile->export_list[k].name
|
|
|
|
|
= (char *) obstack_alloc (&objfile->psymbol_obstack, strlen (string_buffer + buffer[i].name) + 1);
|
|
|
|
|
strcpy (objfile->export_list[k].name, string_buffer + buffer[i].name);
|
|
|
|
|
/* Some day we might want to record the type and other information too */
|
|
|
|
|
objfile->export_list[k].address = buffer[i].value;
|
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
else
|
1999-07-07 22:19:36 +02:00
|
|
|
|
{
|
|
|
|
|
objfile->export_list[k].name = NULL;
|
|
|
|
|
objfile->export_list[k].address = 0;
|
|
|
|
|
}
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
objfile->export_list_size = export_list_size;
|
|
|
|
|
free (string_buffer);
|
|
|
|
|
return export_list_size;
|
|
|
|
|
}
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Register that we are able to handle SOM object file formats. */
|
|
|
|
|
|
|
|
|
|
static struct sym_fns som_sym_fns =
|
|
|
|
|
{
|
|
|
|
|
bfd_target_som_flavour,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
som_new_init, /* sym_new_init: init anything gbl to entire symtab */
|
|
|
|
|
som_symfile_init, /* sym_init: read initial info, setup for sym_read() */
|
|
|
|
|
som_symfile_read, /* sym_read: read a symbol file into symtab */
|
|
|
|
|
som_symfile_finish, /* sym_finish: finished with file, cleanup */
|
|
|
|
|
som_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */
|
|
|
|
|
NULL /* next: pointer to next struct sym_fns */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
_initialize_somread ()
|
|
|
|
|
{
|
|
|
|
|
add_symtab_fns (&som_sym_fns);
|
|
|
|
|
}
|