/* BFD back-end for Irix core files. Copyright 1993, 1994, 1996, 1999, 2001, 2002, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. Written by Stu Grossman, Cygnus Support. Converted to back-end form by Ian Lance Taylor, Cygnus Support This file is part of BFD, the Binary File Descriptor library. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ /* This file can only be compiled on systems which use Irix style core files (namely, Irix 4 and Irix 5, so far). */ #include "sysdep.h" #include "bfd.h" #include "libbfd.h" #ifdef IRIX_CORE #include <core.out.h> struct sgi_core_struct { int sig; char cmd[CORE_NAMESIZE]; }; #define core_hdr(bfd) ((bfd)->tdata.sgi_core_data) #define core_signal(bfd) (core_hdr(bfd)->sig) #define core_command(bfd) (core_hdr(bfd)->cmd) #define irix_core_core_file_matches_executable_p generic_core_file_matches_executable_p static asection *make_bfd_asection (bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr); /* Helper function for irix_core_core_file_p: 32-bit and 64-bit versions. */ #ifdef CORE_MAGIC64 static int do_sections64 (bfd *abfd, struct coreout *coreout) { struct vmap64 vmap; char *secname; int i, val; for (i = 0; i < coreout->c_nvmap; i++) { val = bfd_bread ((PTR) &vmap, (bfd_size_type) sizeof vmap, abfd); if (val != sizeof vmap) break; switch (vmap.v_type) { case VDATA: secname = ".data"; break; case VSTACK: secname = ".stack"; break; #ifdef VMAPFILE case VMAPFILE: secname = ".mapfile"; break; #endif default: continue; } /* A file offset of zero means that the section is not contained in the corefile. */ if (vmap.v_offset == 0) continue; if (!make_bfd_asection (abfd, secname, SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, vmap.v_len, vmap.v_vaddr, vmap.v_offset)) /* Fail. */ return 0; } return 1; } #endif /* 32-bit version. */ static int do_sections (bfd *abfd, struct coreout *coreout) { struct vmap vmap; char *secname; int i, val; for (i = 0; i < coreout->c_nvmap; i++) { val = bfd_bread ((PTR) &vmap, (bfd_size_type) sizeof vmap, abfd); if (val != sizeof vmap) break; switch (vmap.v_type) { case VDATA: secname = ".data"; break; case VSTACK: secname = ".stack"; break; #ifdef VMAPFILE case VMAPFILE: secname = ".mapfile"; break; #endif default: continue; } /* A file offset of zero means that the section is not contained in the corefile. */ if (vmap.v_offset == 0) continue; if (!make_bfd_asection (abfd, secname, SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS, vmap.v_len, vmap.v_vaddr, vmap.v_offset)) /* Fail. */ return 0; } return 1; } static asection * make_bfd_asection (bfd *abfd, const char *name, flagword flags, bfd_size_type size, bfd_vma vma, file_ptr filepos) { asection *asect; asect = bfd_make_section_anyway_with_flags (abfd, name, flags); if (!asect) return NULL; asect->size = size; asect->vma = vma; asect->filepos = filepos; asect->alignment_power = 4; return asect; } static const bfd_target * irix_core_core_file_p (bfd *abfd) { int val; struct coreout coreout; struct idesc *idg, *idf, *ids; bfd_size_type amt; val = bfd_bread ((PTR) &coreout, (bfd_size_type) sizeof coreout, abfd); if (val != sizeof coreout) { if (bfd_get_error () != bfd_error_system_call) bfd_set_error (bfd_error_wrong_format); return 0; } if (coreout.c_version != CORE_VERSION1) return 0; /* Have we got a corefile? */ switch (coreout.c_magic) { case CORE_MAGIC: break; #ifdef CORE_MAGIC64 case CORE_MAGIC64: break; #endif #ifdef CORE_MAGICN32 case CORE_MAGICN32: break; #endif default: return 0; /* Un-identifiable or not corefile. */ } amt = sizeof (struct sgi_core_struct); core_hdr (abfd) = (struct sgi_core_struct *) bfd_zalloc (abfd, amt); if (!core_hdr (abfd)) return NULL; strncpy (core_command (abfd), coreout.c_name, CORE_NAMESIZE); core_signal (abfd) = coreout.c_sigcause; if (bfd_seek (abfd, coreout.c_vmapoffset, SEEK_SET) != 0) goto fail; /* Process corefile sections. */ #ifdef CORE_MAGIC64 if (coreout.c_magic == (int) CORE_MAGIC64) { if (! do_sections64 (abfd, & coreout)) goto fail; } else #endif if (! do_sections (abfd, & coreout)) goto fail; /* Make sure that the regs are contiguous within the core file. */ idg = &coreout.c_idesc[I_GPREGS]; idf = &coreout.c_idesc[I_FPREGS]; ids = &coreout.c_idesc[I_SPECREGS]; if (idg->i_offset + idg->i_len != idf->i_offset || idf->i_offset + idf->i_len != ids->i_offset) goto fail; /* Can't deal with non-contig regs */ if (bfd_seek (abfd, idg->i_offset, SEEK_SET) != 0) goto fail; if (!make_bfd_asection (abfd, ".reg", SEC_HAS_CONTENTS, idg->i_len + idf->i_len + ids->i_len, 0, idg->i_offset)) goto fail; /* OK, we believe you. You're a core file (sure, sure). */ bfd_default_set_arch_mach (abfd, bfd_arch_mips, 0); return abfd->xvec; fail: bfd_release (abfd, core_hdr (abfd)); core_hdr (abfd) = NULL; bfd_section_list_clear (abfd); return NULL; } static char * irix_core_core_file_failing_command (bfd *abfd) { return core_command (abfd); } static int irix_core_core_file_failing_signal (bfd *abfd) { return core_signal (abfd); } /* If somebody calls any byte-swapping routines, shoot them. */ static void swap_abort(void) { abort(); /* This way doesn't require any declaration for ANSI to fuck up */ } #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) const bfd_target irix_core_vec = { "irix-core", bfd_target_unknown_flavour, BFD_ENDIAN_BIG, /* target byte order */ BFD_ENDIAN_BIG, /* target headers byte order */ (HAS_RELOC | EXEC_P | /* object flags */ HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 0, /* symbol prefix */ ' ', /* ar_pad_char */ 16, /* ar_max_namelen */ NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ { /* bfd_check_format */ _bfd_dummy_target, /* unknown format */ _bfd_dummy_target, /* object file */ _bfd_dummy_target, /* archive */ irix_core_core_file_p /* a core file */ }, { /* bfd_set_format */ bfd_false, bfd_false, bfd_false, bfd_false }, { /* bfd_write_contents */ bfd_false, bfd_false, bfd_false, bfd_false }, BFD_JUMP_TABLE_GENERIC (_bfd_generic), BFD_JUMP_TABLE_COPY (_bfd_generic), BFD_JUMP_TABLE_CORE (irix_core), BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), BFD_JUMP_TABLE_WRITE (_bfd_generic), BFD_JUMP_TABLE_LINK (_bfd_nolink), BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), NULL, (PTR) 0 /* backend_data */ }; #endif /* IRIX_CORE */