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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [mips-irix-tdep.c] - Blame information for rev 321

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1 24 jeremybenn
/* Target-dependent code for the MIPS architecture running on IRIX,
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   for GDB, the GNU Debugger.
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   Copyright (C) 2002, 2007, 2008 Free Software Foundation, Inc.
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   This file is part of GDB.
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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 3 of the License, or
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   (at your option) any later version.
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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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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#include "defs.h"
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#include "osabi.h"
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#include "gdb_string.h"
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#include "solib.h"
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#include "solib-irix.h"
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#include "elf-bfd.h"
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static void
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mips_irix_elf_osabi_sniff_abi_tag_sections (bfd *abfd, asection *sect,
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                                            void *obj)
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{
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  enum gdb_osabi *os_ident_ptr = obj;
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  const char *name;
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  unsigned int sectsize;
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  name = bfd_get_section_name (abfd, sect);
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  sectsize = bfd_section_size (abfd, sect);
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  if (strncmp (name, ".MIPS.", 6) == 0 && sectsize > 0)
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    {
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      /* The presence of a section named with a ".MIPS." prefix is
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         indicative of an IRIX binary.  */
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      *os_ident_ptr = GDB_OSABI_IRIX;
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    }
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}
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static enum gdb_osabi
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mips_irix_elf_osabi_sniffer (bfd *abfd)
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{
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  unsigned int elfosabi;
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  enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;
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  /* If the generic sniffer gets a hit, return and let other sniffers
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     get a crack at it.  */
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  bfd_map_over_sections (abfd,
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                         generic_elf_osabi_sniff_abi_tag_sections,
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                         &osabi);
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  if (osabi != GDB_OSABI_UNKNOWN)
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    return GDB_OSABI_UNKNOWN;
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  elfosabi = elf_elfheader (abfd)->e_ident[EI_OSABI];
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  if (elfosabi == ELFOSABI_NONE)
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    {
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      /* When elfosabi is ELFOSABI_NONE (0), then the ELF structures in the
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         file are conforming to the base specification for that machine
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         (there are no OS-specific extensions).  In order to determine the
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         real OS in use we must look for OS notes that have been added.
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         For IRIX, we simply look for sections named with .MIPS. as
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         prefixes.  */
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      bfd_map_over_sections (abfd,
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                             mips_irix_elf_osabi_sniff_abi_tag_sections,
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                             &osabi);
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    }
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  return osabi;
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}
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static void
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mips_irix_init_abi (struct gdbarch_info info,
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                    struct gdbarch *gdbarch)
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{
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  set_solib_ops (gdbarch, &irix_so_ops);
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}
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void
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_initialize_mips_irix_tdep (void)
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{
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  /* Register an ELF OS ABI sniffer for IRIX binaries.  */
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  gdbarch_register_osabi_sniffer (bfd_arch_mips,
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                                  bfd_target_elf_flavour,
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                                  mips_irix_elf_osabi_sniffer);
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  gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_IRIX,
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                          mips_irix_init_abi);
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}

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