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/* BFD back end for NetBSD style core files |
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Copyright (C) 1988-2014 Free Software Foundation, Inc. |
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Written by Paul Kranenburg, EUR |
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This file is part of BFD, the Binary File Descriptor library. |
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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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
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MA 02110-1301, USA. */ |
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#include "sysdep.h" |
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#include "bfd.h" |
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#include "libbfd.h" |
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#include "libaout.h" /* BFD a.out internal data structures. */ |
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#include <sys/param.h> |
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#include <sys/dir.h> |
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#include <signal.h> |
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#include <sys/core.h> |
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/* The machine ID for OpenBSD/sparc64 and older versions of |
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NetBSD/sparc64 overlaps with M_MIPS1. */ |
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#define M_SPARC64_OPENBSD M_MIPS1 |
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/* Offset of StackGhost cookie within `struct md_coredump' on |
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OpenBSD/sparc. */ |
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#define SPARC_WCOOKIE_OFFSET 344 |
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/* Offset of StackGhost cookie within `struct md_coredump' on |
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OpenBSD/sparc64. */ |
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#define SPARC64_WCOOKIE_OFFSET 832 |
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#define netbsd_core_file_matches_executable_p generic_core_file_matches_executable_p |
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#define netbsd_core_file_pid _bfd_nocore_core_file_pid |
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struct netbsd_core_struct |
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{ |
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struct core core; |
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} *rawptr; |
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/* Handle NetBSD-style core dump file. */ |
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static const bfd_target * |
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netbsd_core_file_p (bfd *abfd) |
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{ |
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int val; |
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unsigned i; |
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file_ptr offset; |
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asection *asect; |
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struct core core; |
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struct coreseg coreseg; |
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bfd_size_type amt = sizeof core; |
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val = bfd_bread (&core, amt, abfd); |
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if (val != sizeof core) |
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{ |
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/* Too small to be a core file. */ |
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bfd_set_error (bfd_error_wrong_format); |
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return 0; |
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} |
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if (CORE_GETMAGIC (core) != COREMAGIC) |
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{ |
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bfd_set_error (bfd_error_wrong_format); |
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return 0; |
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} |
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amt = sizeof (struct netbsd_core_struct); |
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rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt); |
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if (rawptr == NULL) |
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return 0; |
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rawptr->core = core; |
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abfd->tdata.netbsd_core_data = rawptr; |
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offset = core.c_hdrsize; |
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for (i = 0; i < core.c_nseg; i++) |
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{ |
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const char *sname; |
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flagword flags; |
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if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
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goto punt; |
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val = bfd_bread (&coreseg, sizeof coreseg, abfd); |
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if (val != sizeof coreseg) |
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{ |
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bfd_set_error (bfd_error_file_truncated); |
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goto punt; |
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} |
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if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC) |
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{ |
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bfd_set_error (bfd_error_wrong_format); |
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goto punt; |
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} |
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offset += core.c_seghdrsize; |
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switch (CORE_GETFLAG (coreseg)) |
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{ |
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case CORE_CPU: |
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sname = ".reg"; |
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flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
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break; |
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case CORE_DATA: |
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sname = ".data"; |
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flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; |
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break; |
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case CORE_STACK: |
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sname = ".stack"; |
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flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; |
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break; |
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default: |
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sname = ".unknown"; |
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flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
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break; |
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} |
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asect = bfd_make_section_anyway_with_flags (abfd, sname, flags); |
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if (asect == NULL) |
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goto punt; |
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asect->size = coreseg.c_size; |
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asect->vma = coreseg.c_addr; |
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asect->filepos = offset; |
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asect->alignment_power = 2; |
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if (CORE_GETFLAG (coreseg) == CORE_CPU) |
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{ |
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bfd_size_type wcookie_offset; |
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switch (CORE_GETMID (core)) |
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{ |
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case M_SPARC_NETBSD: |
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wcookie_offset = SPARC_WCOOKIE_OFFSET; |
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break; |
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case M_SPARC64_OPENBSD: |
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wcookie_offset = SPARC64_WCOOKIE_OFFSET; |
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break; |
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default: |
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wcookie_offset = 0; |
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break; |
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} |
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if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset) |
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{ |
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/* Truncate the .reg section. */ |
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asect->size = wcookie_offset; |
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/* And create the .wcookie section. */ |
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flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
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asect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", |
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flags); |
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if (asect == NULL) |
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goto punt; |
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asect->size = coreseg.c_size - wcookie_offset; |
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asect->vma = 0; |
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asect->filepos = offset + wcookie_offset; |
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asect->alignment_power = 2; |
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} |
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} |
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offset += coreseg.c_size; |
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} |
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/* Set architecture from machine ID. */ |
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switch (CORE_GETMID (core)) |
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{ |
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case M_ALPHA_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); |
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break; |
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case M_ARM6_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3); |
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break; |
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case M_X86_64_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); |
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break; |
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case M_386_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386); |
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break; |
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case M_68K_NETBSD: |
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case M_68K4K_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); |
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break; |
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case M_88K_OPENBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0); |
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break; |
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case M_HPPA_OPENBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11); |
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break; |
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case M_POWERPC_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc); |
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break; |
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case M_SPARC_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); |
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break; |
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case M_SPARC64_NETBSD: |
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case M_SPARC64_OPENBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9); |
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break; |
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case M_VAX_NETBSD: |
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case M_VAX4K_NETBSD: |
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bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0); |
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break; |
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} |
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/* OK, we believe you. You're a core file (sure, sure). */ |
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return abfd->xvec; |
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punt: |
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bfd_release (abfd, abfd->tdata.any); |
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abfd->tdata.any = NULL; |
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bfd_section_list_clear (abfd); |
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return 0; |
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} |
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static char* |
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netbsd_core_file_failing_command (bfd *abfd) |
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{ |
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/*return core_command (abfd);*/ |
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return abfd->tdata.netbsd_core_data->core.c_name; |
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} |
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static int |
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netbsd_core_file_failing_signal (bfd *abfd) |
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{ |
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/*return core_signal (abfd);*/ |
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return abfd->tdata.netbsd_core_data->core.c_signo; |
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} |
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/* If somebody calls any byte-swapping routines, shoot them. */ |
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static void |
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swap_abort (void) |
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{ |
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/* This way doesn't require any declaration for ANSI to fuck up. */ |
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abort (); |
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} |
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#define NO_GET ((bfd_vma (*) (const void *)) swap_abort) |
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#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) |
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#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) |
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#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) |
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#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) |
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#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) |
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const bfd_target core_netbsd_vec = |
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{ |
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"netbsd-core", |
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bfd_target_unknown_flavour, |
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BFD_ENDIAN_UNKNOWN, /* Target byte order. */ |
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BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */ |
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(HAS_RELOC | EXEC_P | /* Object flags. */ |
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HAS_LINENO | HAS_DEBUG | |
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HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
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(SEC_HAS_CONTENTS | /* Section flags. */ |
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SEC_ALLOC | SEC_LOAD | SEC_RELOC), |
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0, /* Symbol prefix. */ |
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' ', /* ar_pad_char. */ |
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16, /* ar_max_namelen. */ |
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0, /* Match priority. */ |
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NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */ |
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NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */ |
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NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */ |
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NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */ |
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NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */ |
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NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */ |
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{ /* bfd_check_format. */ |
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_bfd_dummy_target, /* Unknown format. */ |
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_bfd_dummy_target, /* Object file. */ |
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_bfd_dummy_target, /* Archive. */ |
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netbsd_core_file_p /* A core file. */ |
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}, |
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{ /* bfd_set_format. */ |
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bfd_false, bfd_false, |
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bfd_false, bfd_false |
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}, |
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{ /* bfd_write_contents. */ |
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bfd_false, bfd_false, |
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bfd_false, bfd_false |
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}, |
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BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
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BFD_JUMP_TABLE_COPY (_bfd_generic), |
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BFD_JUMP_TABLE_CORE (netbsd), |
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BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
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BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
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BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
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BFD_JUMP_TABLE_WRITE (_bfd_generic), |
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BFD_JUMP_TABLE_LINK (_bfd_nolink), |
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BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
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NULL, |
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NULL /* Backend_data. */ |
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};
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