1/* BFD back-end for Irix core files. 2 Copyright 1993, 1994, 1996, 1999, 2001, 2002, 2004, 2006, 2007 3 Free Software Foundation, Inc. 4 Written by Stu Grossman, Cygnus Support. 5 Converted to back-end form by Ian Lance Taylor, Cygnus Support 6 7 This file is part of BFD, the Binary File Descriptor library. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 22 MA 02110-1301, USA. */ 23 24 25/* This file can only be compiled on systems which use Irix style core 26 files (namely, Irix 4 and Irix 5, so far). */ 27 28#include "sysdep.h" 29#include "bfd.h" 30#include "libbfd.h" 31 32#ifdef IRIX_CORE 33 34#include <core.out.h> 35 36struct sgi_core_struct 37{ 38 int sig; 39 char cmd[CORE_NAMESIZE]; 40}; 41 42#define core_hdr(bfd) ((bfd)->tdata.sgi_core_data) 43#define core_signal(bfd) (core_hdr(bfd)->sig) 44#define core_command(bfd) (core_hdr(bfd)->cmd) 45 46#define irix_core_core_file_matches_executable_p generic_core_file_matches_executable_p 47 48static asection *make_bfd_asection 49 (bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr); 50 51/* Helper function for irix_core_core_file_p: 52 32-bit and 64-bit versions. */ 53 54#ifdef CORE_MAGIC64 55static int 56do_sections64 (bfd *abfd, struct coreout *coreout) 57{ 58 struct vmap64 vmap; 59 char *secname; 60 int i, val; 61 62 for (i = 0; i < coreout->c_nvmap; i++) 63 { 64 val = bfd_bread ((PTR) &vmap, (bfd_size_type) sizeof vmap, abfd); 65 if (val != sizeof vmap) 66 break; 67 68 switch (vmap.v_type) 69 { 70 case VDATA: 71 secname = ".data"; 72 break; 73 case VSTACK: 74 secname = ".stack"; 75 break; 76#ifdef VMAPFILE 77 case VMAPFILE: 78 secname = ".mapfile"; 79 break; 80#endif 81 default: 82 continue; 83 } 84 85 /* A file offset of zero means that the 86 section is not contained in the corefile. */ 87 if (vmap.v_offset == 0) 88 continue; 89 90 if (!make_bfd_asection (abfd, secname, 91 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 92 vmap.v_len, vmap.v_vaddr, vmap.v_offset)) 93 /* Fail. */ 94 return 0; 95 } 96 97 return 1; 98} 99#endif 100 101/* 32-bit version. */ 102 103static int 104do_sections (bfd *abfd, struct coreout *coreout) 105{ 106 struct vmap vmap; 107 char *secname; 108 int i, val; 109 110 for (i = 0; i < coreout->c_nvmap; i++) 111 { 112 val = bfd_bread ((PTR) &vmap, (bfd_size_type) sizeof vmap, abfd); 113 if (val != sizeof vmap) 114 break; 115 116 switch (vmap.v_type) 117 { 118 case VDATA: 119 secname = ".data"; 120 break; 121 case VSTACK: 122 secname = ".stack"; 123 break; 124#ifdef VMAPFILE 125 case VMAPFILE: 126 secname = ".mapfile"; 127 break; 128#endif 129 default: 130 continue; 131 } 132 133 /* A file offset of zero means that the 134 section is not contained in the corefile. */ 135 if (vmap.v_offset == 0) 136 continue; 137 138 if (!make_bfd_asection (abfd, secname, 139 SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, 140 vmap.v_len, vmap.v_vaddr, vmap.v_offset)) 141 /* Fail. */ 142 return 0; 143 } 144 return 1; 145} 146 147static asection * 148make_bfd_asection (bfd *abfd, 149 const char *name, 150 flagword flags, 151 bfd_size_type size, 152 bfd_vma vma, 153 file_ptr filepos) 154{ 155 asection *asect; 156 157 asect = bfd_make_section_anyway_with_flags (abfd, name, flags); 158 if (!asect) 159 return NULL; 160 161 asect->size = size; 162 asect->vma = vma; 163 asect->filepos = filepos; 164 asect->alignment_power = 4; 165 166 return asect; 167} 168 169static const bfd_target * 170irix_core_core_file_p (bfd *abfd) 171{ 172 int val; 173 struct coreout coreout; 174 struct idesc *idg, *idf, *ids; 175 bfd_size_type amt; 176 177 val = bfd_bread ((PTR) &coreout, (bfd_size_type) sizeof coreout, abfd); 178 if (val != sizeof coreout) 179 { 180 if (bfd_get_error () != bfd_error_system_call) 181 bfd_set_error (bfd_error_wrong_format); 182 return 0; 183 } 184 185 if (coreout.c_version != CORE_VERSION1) 186 return 0; 187 188 /* Have we got a corefile? */ 189 switch (coreout.c_magic) 190 { 191 case CORE_MAGIC: break; 192#ifdef CORE_MAGIC64 193 case CORE_MAGIC64: break; 194#endif 195#ifdef CORE_MAGICN32 196 case CORE_MAGICN32: break; 197#endif 198 default: return 0; /* Un-identifiable or not corefile. */ 199 } 200 201 amt = sizeof (struct sgi_core_struct); 202 core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, amt); 203 if (!core_hdr (abfd)) 204 return NULL; 205 206 strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE); 207 core_signal (abfd) = coreout.c_sigcause; 208 209 if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0) 210 goto fail; 211 212 /* Process corefile sections. */ 213#ifdef CORE_MAGIC64 214 if (coreout.c_magic == (int) CORE_MAGIC64) 215 { 216 if (! do_sections64 (abfd, & coreout)) 217 goto fail; 218 } 219 else 220#endif 221 if (! do_sections (abfd, & coreout)) 222 goto fail; 223 224 /* Make sure that the regs are contiguous within the core file. */ 225 226 idg = &coreout.c_idesc[I_GPREGS]; 227 idf = &coreout.c_idesc[I_FPREGS]; 228 ids = &coreout.c_idesc[I_SPECREGS]; 229 230 if (idg->i_offset + idg->i_len != idf->i_offset 231 || idf->i_offset + idf->i_len != ids->i_offset) 232 goto fail; /* Can't deal with non-contig regs */ 233 234 if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0) 235 goto fail; 236 237 if (!make_bfd_asection (abfd, ".reg", 238 SEC_HAS_CONTENTS, 239 idg->i_len + idf->i_len + ids->i_len, 240 0, 241 idg->i_offset)) 242 goto fail; 243 244 /* OK, we believe you. You're a core file (sure, sure). */ 245 bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0); 246 247 return abfd->xvec; 248 249 fail: 250 bfd_release (abfd, core_hdr (abfd)); 251 core_hdr (abfd) = NULL; 252 bfd_section_list_clear (abfd); 253 return NULL; 254} 255 256static char * 257irix_core_core_file_failing_command (bfd *abfd) 258{ 259 return core_command (abfd); 260} 261 262static int 263irix_core_core_file_failing_signal (bfd *abfd) 264{ 265 return core_signal (abfd); 266} 267 268/* If somebody calls any byte-swapping routines, shoot them. */ 269static void 270swap_abort(void) 271{ 272 abort(); /* This way doesn't require any declaration for ANSI to fuck up */ 273} 274 275#define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 276#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 277#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 278#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) 279#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) 280#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) 281 282const bfd_target irix_core_vec = 283 { 284 "irix-core", 285 bfd_target_unknown_flavour, 286 BFD_ENDIAN_BIG, /* target byte order */ 287 BFD_ENDIAN_BIG, /* target headers byte order */ 288 (HAS_RELOC | EXEC_P | /* object flags */ 289 HAS_LINENO | HAS_DEBUG | 290 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 291 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 292 0, /* symbol prefix */ 293 ' ', /* ar_pad_char */ 294 16, /* ar_max_namelen */ 295 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ 296 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ 297 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ 298 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ 299 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ 300 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ 301 302 { /* bfd_check_format */ 303 _bfd_dummy_target, /* unknown format */ 304 _bfd_dummy_target, /* object file */ 305 _bfd_dummy_target, /* archive */ 306 irix_core_core_file_p /* a core file */ 307 }, 308 { /* bfd_set_format */ 309 bfd_false, bfd_false, 310 bfd_false, bfd_false 311 }, 312 { /* bfd_write_contents */ 313 bfd_false, bfd_false, 314 bfd_false, bfd_false 315 }, 316 317 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 318 BFD_JUMP_TABLE_COPY (_bfd_generic), 319 BFD_JUMP_TABLE_CORE (irix_core), 320 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 321 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 322 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 323 BFD_JUMP_TABLE_WRITE (_bfd_generic), 324 BFD_JUMP_TABLE_LINK (_bfd_nolink), 325 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 326 327 NULL, 328 329 (PTR) 0 /* backend_data */ 330 }; 331 332#endif /* IRIX_CORE */ 333