diff options
Diffstat (limited to 'bfd/netbsd-core.c')
| -rw-r--r-- | bfd/netbsd-core.c | 318 |
1 files changed, 318 insertions, 0 deletions
diff --git a/bfd/netbsd-core.c b/bfd/netbsd-core.c new file mode 100644 index 0000000..a048f13 --- /dev/null +++ b/bfd/netbsd-core.c @@ -0,0 +1,318 @@ +/* BFD back end for NetBSD style core files + Copyright (C) 1988-2014 Free Software Foundation, Inc. + Written by Paul Kranenburg, EUR + + 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. */ + +#include "sysdep.h" +#include "bfd.h" +#include "libbfd.h" +#include "libaout.h" /* BFD a.out internal data structures. */ + +#include <sys/param.h> +#include <sys/dir.h> +#include <signal.h> +#include <sys/core.h> + +/* The machine ID for OpenBSD/sparc64 and older versions of + NetBSD/sparc64 overlaps with M_MIPS1. */ +#define M_SPARC64_OPENBSD M_MIPS1 + +/* Offset of StackGhost cookie within `struct md_coredump' on + OpenBSD/sparc. */ +#define SPARC_WCOOKIE_OFFSET 344 + +/* Offset of StackGhost cookie within `struct md_coredump' on + OpenBSD/sparc64. */ +#define SPARC64_WCOOKIE_OFFSET 832 + +#define netbsd_core_file_matches_executable_p generic_core_file_matches_executable_p +#define netbsd_core_file_pid _bfd_nocore_core_file_pid + +struct netbsd_core_struct +{ + struct core core; +} *rawptr; + +/* Handle NetBSD-style core dump file. */ + +static const bfd_target * +netbsd_core_file_p (bfd *abfd) +{ + int val; + unsigned i; + file_ptr offset; + asection *asect; + struct core core; + struct coreseg coreseg; + bfd_size_type amt = sizeof core; + + val = bfd_bread (&core, amt, abfd); + if (val != sizeof core) + { + /* Too small to be a core file. */ + bfd_set_error (bfd_error_wrong_format); + return 0; + } + + if (CORE_GETMAGIC (core) != COREMAGIC) + { + bfd_set_error (bfd_error_wrong_format); + return 0; + } + + amt = sizeof (struct netbsd_core_struct); + rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt); + if (rawptr == NULL) + return 0; + + rawptr->core = core; + abfd->tdata.netbsd_core_data = rawptr; + + offset = core.c_hdrsize; + for (i = 0; i < core.c_nseg; i++) + { + const char *sname; + flagword flags; + + if (bfd_seek (abfd, offset, SEEK_SET) != 0) + goto punt; + + val = bfd_bread (&coreseg, sizeof coreseg, abfd); + if (val != sizeof coreseg) + { + bfd_set_error (bfd_error_file_truncated); + goto punt; + } + if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC) + { + bfd_set_error (bfd_error_wrong_format); + goto punt; + } + + offset += core.c_seghdrsize; + + switch (CORE_GETFLAG (coreseg)) + { + case CORE_CPU: + sname = ".reg"; + flags = SEC_ALLOC + SEC_HAS_CONTENTS; + break; + case CORE_DATA: + sname = ".data"; + flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; + break; + case CORE_STACK: + sname = ".stack"; + flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; + break; + default: + sname = ".unknown"; + flags = SEC_ALLOC + SEC_HAS_CONTENTS; + break; + } + asect = bfd_make_section_anyway_with_flags (abfd, sname, flags); + if (asect == NULL) + goto punt; + + asect->size = coreseg.c_size; + asect->vma = coreseg.c_addr; + asect->filepos = offset; + asect->alignment_power = 2; + + if (CORE_GETFLAG (coreseg) == CORE_CPU) + { + bfd_size_type wcookie_offset; + + switch (CORE_GETMID (core)) + { + case M_SPARC_NETBSD: + wcookie_offset = SPARC_WCOOKIE_OFFSET; + break; + case M_SPARC64_OPENBSD: + wcookie_offset = SPARC64_WCOOKIE_OFFSET; + break; + default: + wcookie_offset = 0; + break; + } + + if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset) + { + /* Truncate the .reg section. */ + asect->size = wcookie_offset; + + /* And create the .wcookie section. */ + flags = SEC_ALLOC + SEC_HAS_CONTENTS; + asect = bfd_make_section_anyway_with_flags (abfd, ".wcookie", + flags); + if (asect == NULL) + goto punt; + + asect->size = coreseg.c_size - wcookie_offset; + asect->vma = 0; + asect->filepos = offset + wcookie_offset; + asect->alignment_power = 2; + } + } + + offset += coreseg.c_size; + } + + /* Set architecture from machine ID. */ + switch (CORE_GETMID (core)) + { + case M_ALPHA_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); + break; + + case M_ARM6_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3); + break; + + case M_X86_64_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); + break; + + case M_386_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386); + break; + + case M_68K_NETBSD: + case M_68K4K_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0); + break; + + case M_88K_OPENBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0); + break; + + case M_HPPA_OPENBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11); + break; + + case M_POWERPC_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc); + break; + + case M_SPARC_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc); + break; + + case M_SPARC64_NETBSD: + case M_SPARC64_OPENBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9); + break; + + case M_VAX_NETBSD: + case M_VAX4K_NETBSD: + bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0); + break; + } + + /* OK, we believe you. You're a core file (sure, sure). */ + return abfd->xvec; + + punt: + bfd_release (abfd, abfd->tdata.any); + abfd->tdata.any = NULL; + bfd_section_list_clear (abfd); + return 0; +} + +static char* +netbsd_core_file_failing_command (bfd *abfd) +{ + /*return core_command (abfd);*/ + return abfd->tdata.netbsd_core_data->core.c_name; +} + +static int +netbsd_core_file_failing_signal (bfd *abfd) +{ + /*return core_signal (abfd);*/ + return abfd->tdata.netbsd_core_data->core.c_signo; +} + +/* If somebody calls any byte-swapping routines, shoot them. */ + +static void +swap_abort (void) +{ + /* This way doesn't require any declaration for ANSI to fuck up. */ + abort (); +} + +#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 core_netbsd_vec = + { + "netbsd-core", + bfd_target_unknown_flavour, + BFD_ENDIAN_UNKNOWN, /* Target byte order. */ + BFD_ENDIAN_UNKNOWN, /* 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 | /* Section flags. */ + SEC_ALLOC | SEC_LOAD | SEC_RELOC), + 0, /* Symbol prefix. */ + ' ', /* ar_pad_char. */ + 16, /* ar_max_namelen. */ + 0, /* Match priority. */ + 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. */ + netbsd_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 (netbsd), + 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, + + NULL /* Backend_data. */ + }; |