projects / deliverable / binutils-gdb.git / blame
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1 | /* Target-dependent code for the MIPS architecture running on IRIX, |
| 2 | for GDB, the GNU Debugger. | |
| 3 | ||
| 4 | Copyright 2002 Free Software Foundation, Inc. | |
| 5 | ||
| 6 | This file is part of GDB. | |
| 7 | ||
| 8 | This program is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU General Public License as published by | |
| 10 | the Free Software Foundation; either version 2 of the License, or | |
| 11 | (at your option) any later version. | |
| 12 | ||
| 13 | This program is distributed in the hope that it will be useful, | |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | GNU General Public License for more details. | |
| 17 | ||
| 18 | You should have received a copy of the GNU General Public License | |
| 19 | along with this program; if not, write to the Free Software | |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
| 21 | Boston, MA 02111-1307, USA. */ | |
| 22 | ||
| 23 | #include "defs.h" | |
| 24 | #include "osabi.h" | |
| 25 | ||
| 26 | #include "elf-bfd.h" | |
| 27 | ||
| 28 | static void | |
| 29 | mips_irix_elf_osabi_sniff_abi_tag_sections (bfd *abfd, asection *sect, | |
| 30 | void *obj) | |
| 31 | { | |
| 32 | enum gdb_osabi *os_ident_ptr = obj; | |
| 33 | const char *name; | |
| 34 | unsigned int sectsize; | |
| 35 | ||
| 36 | name = bfd_get_section_name (abfd, sect); | |
| 37 | sectsize = bfd_section_size (abfd, sect); | |
| 38 | ||
| 39 | if (strncmp (name, ".MIPS.", 6) == 0 && sectsize > 0) | |
| 40 | { | |
| 41 | /* The presence of a section named with a ".MIPS." prefix is | |
| 42 | indicative of an IRIX binary. */ | |
| 43 | *os_ident_ptr = GDB_OSABI_IRIX; | |
| 44 | } | |
| 45 | } | |
| 46 | ||
| 47 | static enum gdb_osabi | |
| 48 | mips_irix_elf_osabi_sniffer (bfd *abfd) | |
| 49 | { | |
| 50 | unsigned int elfosabi; | |
| 51 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; | |
| 52 | ||
| 53 | /* If the generic sniffer gets a hit, return and let other sniffers | |
| 54 | get a crack at it. */ | |
| 55 | bfd_map_over_sections (abfd, | |
| 56 | generic_elf_osabi_sniff_abi_tag_sections, | |
| 57 | &osabi); | |
| 58 | if (osabi != GDB_OSABI_UNKNOWN) | |
| 59 | return GDB_OSABI_UNKNOWN; | |
| 60 | ||
| 61 | elfosabi = elf_elfheader (abfd)->e_ident[EI_OSABI]; | |
| 62 | ||
| 63 | if (elfosabi == ELFOSABI_NONE) | |
| 64 | { | |
| 65 | /* When elfosabi is ELFOSABI_NONE (0), then the ELF structures in the | |
| 66 | file are conforming to the base specification for that machine | |
| 67 | (there are no OS-specific extensions). In order to determine the | |
| 68 | real OS in use we must look for OS notes that have been added. | |
| 69 | ||
| 70 | For IRIX, we simply look for sections named with .MIPS. as | |
| 71 | prefixes. */ | |
| 72 | bfd_map_over_sections (abfd, | |
| 73 | mips_irix_elf_osabi_sniff_abi_tag_sections, | |
| 74 | &osabi); | |
| 75 | } | |
| 76 | return osabi; | |
| 77 | } | |
| 78 | ||
| 79 | static void | |
| 80 | mips_irix_init_abi (struct gdbarch_info info, | |
| 81 | struct gdbarch *gdbarch) | |
| 82 | { | |
| 83 | } | |
| 84 | ||
| 85 | void | |
| 86 | _initialize_mips_irix_tdep (void) | |
| 87 | { | |
| 88 | /* Register an ELF OS ABI sniffer for IRIX binaries. */ | |
| 89 | gdbarch_register_osabi_sniffer (bfd_arch_mips, | |
| 90 | bfd_target_elf_flavour, | |
| 91 | mips_irix_elf_osabi_sniffer); | |
| 92 | ||
| 05816f70 | 93 | gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_IRIX, |
| b96d0a4e KB |
94 | mips_irix_init_abi); |
| 95 | } |