a15c5c831a
(i[34567]86-*-dicos*, x86_64-*-dicos*): Set gdb_osabi to GDB_OSABI_DICOS. * defs.h (enum gdb_osabi): Add GDB_OSABI_DICOS. * osabi.c (gdb_osabi_name): Add "DICOS". * i386-dicos-tdep.c: New file. * Makefile.in (ALL_TARGET_OBS): Add i386-dicos-tdep.o. (ALLDEPFILES): Add i386-dicos-tdep.c. (i386-dicos-tdep.o): New rule.
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/* Target-dependent code for DICOS running on i386's, for GDB.
|
|
|
|
Copyright (C) 2008 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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "defs.h"
|
|
#include "osabi.h"
|
|
#include "gdb_string.h"
|
|
#include "solib.h"
|
|
#include "solib-target.h"
|
|
|
|
static void
|
|
i386_dicos_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
|
{
|
|
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
|
|
|
set_solib_ops (gdbarch, &solib_target_so_ops);
|
|
}
|
|
|
|
/* Look in the elf symbol table of ABFD for a symbol named WANTED.
|
|
Return true if found. */
|
|
static int
|
|
i386_dicos_bfd_has_symbol_p (bfd *abfd, const char *wanted)
|
|
{
|
|
long storage_needed;
|
|
int ret = 0;
|
|
asymbol **symbol_table = NULL;
|
|
|
|
storage_needed = bfd_get_symtab_upper_bound (abfd);
|
|
if (storage_needed < 0)
|
|
{
|
|
warning (_("Can't read elf symbols from %s: %s"), bfd_get_filename (abfd),
|
|
bfd_errmsg (bfd_get_error ()));
|
|
return 0;
|
|
}
|
|
|
|
if (storage_needed > 0)
|
|
{
|
|
long i, symcount;
|
|
|
|
symbol_table = xmalloc (storage_needed);
|
|
symcount = bfd_canonicalize_symtab (abfd, symbol_table);
|
|
|
|
if (symcount < 0)
|
|
warning (_("Can't read elf symbols from %s: %s"),
|
|
bfd_get_filename (abfd),
|
|
bfd_errmsg (bfd_get_error ()));
|
|
else
|
|
{
|
|
for (i = 0; i < symcount; i++)
|
|
{
|
|
asymbol *sym = symbol_table[i];
|
|
if (sym->name != NULL
|
|
&& wanted[0] == sym->name[0]
|
|
&& strcmp (wanted + 1, sym->name + 1) == 0)
|
|
{
|
|
ret = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
xfree (symbol_table);
|
|
return ret;
|
|
}
|
|
|
|
static enum gdb_osabi
|
|
i386_dicos_osabi_sniffer (bfd *abfd)
|
|
{
|
|
char *target_name = bfd_get_target (abfd);
|
|
|
|
/* DICOS debug info files don't have a .note.ABI-tag marker or
|
|
something similar. We do know there's always a "header" section
|
|
of 36 bytes, and there's always a "Dicos_loadModuleInfo" symbol
|
|
defined. Look for the section first, as that should be
|
|
cheaper. */
|
|
if (strcmp (target_name, "elf32-i386") == 0)
|
|
{
|
|
asection *section = bfd_get_section_by_name (abfd, "header");
|
|
if (section
|
|
&& bfd_section_size (abfd, section) == 36
|
|
&& i386_dicos_bfd_has_symbol_p (abfd, "Dicos_loadModuleInfo"))
|
|
return GDB_OSABI_DICOS;
|
|
}
|
|
|
|
return GDB_OSABI_UNKNOWN;
|
|
}
|
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
|
void _initialize_i386_dicos_tdep (void);
|
|
|
|
void
|
|
_initialize_i386_dicos_tdep (void)
|
|
{
|
|
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
|
|
i386_dicos_osabi_sniffer);
|
|
|
|
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_DICOS,
|
|
i386_dicos_init_abi);
|
|
}
|