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320 lines
8.6 KiB
C
320 lines
8.6 KiB
C
/* BFD back end for NetBSD style core files
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Copyright (C) 1988-2023 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 bfd_cleanup
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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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size_t 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_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 _bfd_no_cleanup;
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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 ((uint64_t (*) (const void *)) swap_abort)
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#define NO_PUT64 ((void (*) (uint64_t, void *)) swap_abort)
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#define NO_GETS64 ((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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TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
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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_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error
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},
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{ /* bfd_write_contents. */
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error,
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_bfd_bool_bfd_false_error
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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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