Re: Assume solib.h

[Kevin Buettner <kevinb@redhat.com>]

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On Fri, 12 Nov 2004 19:14:30 +0200
"Eli Zaretskii" <eliz@gnu.org> wrote:

> I'm with Mark on this one: a patch that potentially breaks a supported
> platform doesn't get my vote.  If a platform is supported, it deserves
> that we don't break it, and calling it ``marginal'' doesn't change
> anything.

Mark, Eli,

Would the addition of the attached file (solib-null.c) to Andrew's patch
address your concerns?  (Makefile.in has to change too; basically
solib-null.o is unconditionally built and linked into gdb.  I can post
a patch if desired...)

I've not been able to test it as thoroughly as I'd like, but it does
seem to get me past some solib related problems on remote targets which
lack shared library support.

Kevin

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/* Definitions for targets without shared libraries for GDB, the GNU Debugger.

   Copyright 2004
   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include "defs.h"
#include "solist.h"

static struct so_list *
null_current_sos (void)
{
  return NULL;
}

static void
null_special_symbol_handling (void)
{
}

static void
null_solib_create_inferior_hook (void)
{
}

static void
null_clear_solib (void)
{
}

static void
null_free_so (struct so_list *so)
{
  xfree (so->lm_info);
}


static void
null_relocate_section_addresses (struct so_list *so,
                                 struct section_table *sec)
{
}

static int
null_open_symbol_file_object (void *from_ttyp)
{
  return 0;
}

static int
null_in_dynsym_resolve_code (CORE_ADDR pc)
{
  return 0;
}

static struct target_so_ops null_so_ops;

extern initialize_file_ftype _initialize_null_solib; /* -Wmissing-prototypes */

void
_initialize_null_solib (void)
{
  null_so_ops.relocate_section_addresses = null_relocate_section_addresses;
  null_so_ops.free_so = null_free_so;
  null_so_ops.clear_solib = null_clear_solib;
  null_so_ops.solib_create_inferior_hook = null_solib_create_inferior_hook;
  null_so_ops.special_symbol_handling = null_special_symbol_handling;
  null_so_ops.current_sos = null_current_sos;
  null_so_ops.open_symbol_file_object = null_open_symbol_file_object;
  null_so_ops.in_dynsym_resolve_code = null_in_dynsym_resolve_code;

  /* Set current_target_so_ops to null_so_ops if not already set.  */
  if (current_target_so_ops == 0)
    current_target_so_ops = &null_so_ops;
}