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1181 |
sfurman |
/* Target-dependent code for the MIPS architecture running on IRIX,
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for GDB, the GNU Debugger.
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Copyright 2002 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 2 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, 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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#include "defs.h"
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#include "osabi.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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}
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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, GDB_OSABI_IRIX,
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mips_irix_init_abi);
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}
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