osf-core.c revision 91041
1/* BFD back-end for OSF/1 core files. 2 Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002 3 Free Software Foundation, Inc. 4 5This file is part of BFD, the Binary File Descriptor library. 6 7This program is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2 of the License, or 10(at your option) any later version. 11 12This program is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with this program; if not, write to the Free Software 19Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21/* This file can only be compiled on systems which use OSF/1 style 22 core files. */ 23 24#include "bfd.h" 25#include "sysdep.h" 26#include "libbfd.h" 27 28#include <sys/user.h> 29#include <sys/core.h> 30 31/* forward declarations */ 32 33static asection *make_bfd_asection 34 PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr)); 35static const bfd_target *osf_core_core_file_p PARAMS ((bfd *)); 36static char *osf_core_core_file_failing_command PARAMS ((bfd *)); 37static int osf_core_core_file_failing_signal PARAMS ((bfd *)); 38static boolean osf_core_core_file_matches_executable_p PARAMS ((bfd *, bfd *)); 39static void swap_abort PARAMS ((void)); 40 41/* These are stored in the bfd's tdata */ 42 43struct osf_core_struct 44{ 45 int sig; 46 char cmd[MAXCOMLEN + 1]; 47}; 48 49#define core_hdr(bfd) ((bfd)->tdata.osf_core_data) 50#define core_signal(bfd) (core_hdr(bfd)->sig) 51#define core_command(bfd) (core_hdr(bfd)->cmd) 52 53static asection * 54make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos) 55 bfd *abfd; 56 const char *name; 57 flagword flags; 58 bfd_size_type _raw_size; 59 bfd_vma vma; 60 file_ptr filepos; 61{ 62 asection *asect; 63 64 asect = bfd_make_section_anyway (abfd, name); 65 if (!asect) 66 return NULL; 67 68 asect->flags = flags; 69 asect->_raw_size = _raw_size; 70 asect->vma = vma; 71 asect->filepos = filepos; 72 asect->alignment_power = 8; 73 74 return asect; 75} 76 77static const bfd_target * 78osf_core_core_file_p (abfd) 79 bfd *abfd; 80{ 81 int val; 82 int i; 83 char *secname; 84 struct core_filehdr core_header; 85 bfd_size_type amt; 86 87 amt = sizeof core_header; 88 val = bfd_bread ((PTR) &core_header, amt, abfd); 89 if (val != sizeof core_header) 90 return NULL; 91 92 if (strncmp (core_header.magic, "Core", 4) != 0) 93 return NULL; 94 95 core_hdr (abfd) = (struct osf_core_struct *) 96 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct)); 97 if (!core_hdr (abfd)) 98 return NULL; 99 100 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1); 101 core_signal (abfd) = core_header.signo; 102 103 for (i = 0; i < core_header.nscns; i++) 104 { 105 struct core_scnhdr core_scnhdr; 106 flagword flags; 107 108 amt = sizeof core_scnhdr; 109 val = bfd_bread ((PTR) &core_scnhdr, amt, abfd); 110 if (val != sizeof core_scnhdr) 111 break; 112 113 /* Skip empty sections. */ 114 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0) 115 continue; 116 117 switch (core_scnhdr.scntype) 118 { 119 case SCNRGN: 120 secname = ".data"; 121 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 122 break; 123 case SCNSTACK: 124 secname = ".stack"; 125 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; 126 break; 127 case SCNREGS: 128 secname = ".reg"; 129 flags = SEC_HAS_CONTENTS; 130 break; 131 default: 132 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"), 133 core_scnhdr.scntype); 134 continue; 135 } 136 137 if (!make_bfd_asection (abfd, secname, flags, 138 (bfd_size_type) core_scnhdr.size, 139 (bfd_vma) core_scnhdr.vaddr, 140 (file_ptr) core_scnhdr.scnptr)) 141 goto fail; 142 } 143 144 /* OK, we believe you. You're a core file (sure, sure). */ 145 146 return abfd->xvec; 147 148 fail: 149 bfd_release (abfd, core_hdr (abfd)); 150 core_hdr (abfd) = NULL; 151 bfd_section_list_clear (abfd); 152 return NULL; 153} 154 155static char * 156osf_core_core_file_failing_command (abfd) 157 bfd *abfd; 158{ 159 return core_command (abfd); 160} 161 162/* ARGSUSED */ 163static int 164osf_core_core_file_failing_signal (abfd) 165 bfd *abfd; 166{ 167 return core_signal (abfd); 168} 169 170/* ARGSUSED */ 171static boolean 172osf_core_core_file_matches_executable_p (core_bfd, exec_bfd) 173 bfd *core_bfd ATTRIBUTE_UNUSED; 174 bfd *exec_bfd ATTRIBUTE_UNUSED; 175{ 176 return true; /* FIXME, We have no way of telling at this point */ 177} 178 179/* If somebody calls any byte-swapping routines, shoot them. */ 180static void 181swap_abort() 182{ 183 abort(); /* This way doesn't require any declaration for ANSI to fuck up */ 184} 185#define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) 186#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) 187#define NO_SIGNED_GET \ 188 ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) 189 190const bfd_target osf_core_vec = 191 { 192 "osf-core", 193 bfd_target_unknown_flavour, 194 BFD_ENDIAN_LITTLE, /* target byte order */ 195 BFD_ENDIAN_LITTLE, /* target headers byte order */ 196 (HAS_RELOC | EXEC_P | /* object flags */ 197 HAS_LINENO | HAS_DEBUG | 198 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 199 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 200 0, /* symbol prefix */ 201 ' ', /* ar_pad_char */ 202 16, /* ar_max_namelen */ 203 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ 204 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ 205 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ 206 NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ 207 NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ 208 NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ 209 210 { /* bfd_check_format */ 211 _bfd_dummy_target, /* unknown format */ 212 _bfd_dummy_target, /* object file */ 213 _bfd_dummy_target, /* archive */ 214 osf_core_core_file_p /* a core file */ 215 }, 216 { /* bfd_set_format */ 217 bfd_false, bfd_false, 218 bfd_false, bfd_false 219 }, 220 { /* bfd_write_contents */ 221 bfd_false, bfd_false, 222 bfd_false, bfd_false 223 }, 224 225 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 226 BFD_JUMP_TABLE_COPY (_bfd_generic), 227 BFD_JUMP_TABLE_CORE (osf_core), 228 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 229 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 230 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 231 BFD_JUMP_TABLE_WRITE (_bfd_generic), 232 BFD_JUMP_TABLE_LINK (_bfd_nolink), 233 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 234 235 NULL, 236 237 (PTR) 0 /* backend_data */ 238}; 239