/* BFD back end for traditional Unix core files (U-area and raw sections)
- Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1988-2020 Free Software Foundation, Inc.
Written by John Gilmore of Cygnus Support.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 2 of the License, or
-(at your option) any later version.
+ 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.
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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. */
-/* To use this file on a particular host, configure the host with these
- parameters in the config/h-HOST file:
-
- HDEFINES=-DTRAD_CORE
- HDEPFILES=trad-core.o
-
- */
-
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
-#include "libaout.h" /* BFD a.out internal data structures */
+#include "libaout.h" /* BFD a.out internal data structures */
-#include <stdio.h>
-#include <sys/types.h>
#include <sys/param.h>
-#include <sys/dir.h>
+#ifdef HAVE_DIRENT_H
+# include <dirent.h>
+#else
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif
#include <signal.h>
-#include <machine/reg.h>
#include <sys/user.h> /* After a.out.h */
-#include <sys/file.h>
-#include <errno.h>
+#ifdef TRAD_HEADER
+#include TRAD_HEADER
+#endif
+
+#ifndef NBPG
+# define NBPG getpagesize()
+#endif
-/* These are stored in the bfd's tdata */
-struct core_data {
- struct user *upage; /* core file header */
+struct trad_core_struct
+{
asection *data_section;
asection *stack_section;
asection *reg_section;
+ struct user u;
};
-#define core_hdr(bfd) (((struct core_data *) (bfd->tdata))->hdr)
-#define core_upage(bfd) (((struct core_data *) ((bfd)->tdata))->upage)
-#define core_datasec(bfd) (((struct core_data *) ((bfd)->tdata))->data_section)
-#define core_stacksec(bfd) (((struct core_data*)((bfd)->tdata))->stack_section)
-#define core_regsec(bfd) (((struct core_data *) ((bfd)->tdata))->reg_section)
+#define core_upage(bfd) (&((bfd)->tdata.trad_core_data->u))
+#define core_datasec(bfd) ((bfd)->tdata.trad_core_data->data_section)
+#define core_stacksec(bfd) ((bfd)->tdata.trad_core_data->stack_section)
+#define core_regsec(bfd) ((bfd)->tdata.trad_core_data->reg_section)
+
+/* forward declarations */
+
+#define trad_unix_core_file_matches_executable_p generic_core_file_matches_executable_p
+#define trad_unix_core_file_pid _bfd_nocore_core_file_pid
+
/* Handle 4.2-style (and perhaps also sysV-style) core dump file. */
-/* ARGSUSED */
-bfd_target *
-trad_unix_core_file_p (abfd)
- bfd *abfd;
+static const bfd_target *
+trad_unix_core_file_p (bfd *abfd)
{
int val;
struct user u;
- unsigned int reg_offset, fp_reg_offset;
- /* This struct is just for allocating two things with one zalloc, so
- they will be freed together, without violating alignment constraints. */
- struct core_user {
- struct core_data coredata;
- struct user u;
- } *rawptr;
-
- val = bfd_read ((void *)&u, 1, sizeof u, abfd);
+ struct trad_core_struct *rawptr;
+ bfd_size_type amt;
+ flagword flags;
+
+#ifdef TRAD_CORE_USER_OFFSET
+ /* If defined, this macro is the file position of the user struct. */
+ if (bfd_seek (abfd, (file_ptr) TRAD_CORE_USER_OFFSET, SEEK_SET) != 0)
+ return 0;
+#endif
+
+ val = bfd_bread ((void *) &u, (bfd_size_type) sizeof u, abfd);
if (val != sizeof u)
- return 0; /* Too small to be a core file */
+ {
+ /* Too small to be a core file */
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
/* Sanity check perhaps??? */
- if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
- return 0;
+ if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
if (u.u_ssize > 0x1000000)
- return 0;
- /* Check that the size claimed is no greater than the file size. FIXME. */
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
+
+ /* Check that the size claimed is no greater than the file size. */
+ {
+ struct stat statbuf;
+
+ if (bfd_stat (abfd, &statbuf) < 0)
+ return 0;
+
+ if ((ufile_ptr) NBPG * (UPAGES + u.u_dsize
+#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
+ - u.u_tsize
+#endif
+ + u.u_ssize)
+ > (ufile_ptr) statbuf.st_size)
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
+#ifndef TRAD_CORE_ALLOW_ANY_EXTRA_SIZE
+ if (((ufile_ptr) NBPG * (UPAGES + u.u_dsize + u.u_ssize)
+#ifdef TRAD_CORE_EXTRA_SIZE_ALLOWED
+ /* Some systems write the file too big. */
+ + TRAD_CORE_EXTRA_SIZE_ALLOWED
+#endif
+ )
+ < (ufile_ptr) statbuf.st_size)
+ {
+ /* The file is too big. Maybe it's not a core file
+ or we otherwise have bad values for u_dsize and u_ssize). */
+ bfd_set_error (bfd_error_wrong_format);
+ return 0;
+ }
+#endif
+ }
/* OK, we believe you. You're a core file (sure, sure). */
/* Allocate both the upage and the struct core_data at once, so
a single free() will free them both. */
- rawptr = (struct core_user *)bfd_zalloc (abfd, sizeof (struct core_user));
- if (rawptr == NULL) {
- bfd_error = no_memory;
- return 0;
- }
-
- set_tdata (abfd, &rawptr->coredata);
- core_upage (abfd) = &rawptr->u;
- *core_upage (abfd) = u; /* Save that upage! */
-
- /* Create the sections. This is raunchy, but bfd_close wants to free
- them separately. */
- core_stacksec (abfd) = (asection *) zalloc (sizeof (asection));
- if (core_stacksec (abfd) == NULL) {
-loser:
- bfd_error = no_memory;
- free ((void *)rawptr);
+ amt = sizeof (struct trad_core_struct);
+ rawptr = (struct trad_core_struct *) bfd_zmalloc (amt);
+ if (rawptr == NULL)
return 0;
- }
- core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
- if (core_datasec (abfd) == NULL) {
-loser1:
- free ((void *)core_stacksec (abfd));
- goto loser;
- }
- core_regsec (abfd) = (asection *) zalloc (sizeof (asection));
- if (core_regsec (abfd) == NULL) {
-loser2:
- free ((void *)core_datasec (abfd));
- goto loser1;
- }
- core_stacksec (abfd)->name = ".stack";
- core_datasec (abfd)->name = ".data";
- core_regsec (abfd)->name = ".reg";
-
- core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
- core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
- core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
-
- core_datasec (abfd)->size = NBPG * u.u_dsize;
+ abfd->tdata.trad_core_data = rawptr;
+
+ rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
+
+ /* Create the sections. */
+
+ flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
+ core_stacksec(abfd) = bfd_make_section_anyway_with_flags (abfd, ".stack",
+ flags);
+ if (core_stacksec (abfd) == NULL)
+ goto fail;
+ core_datasec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".data",
+ flags);
+ if (core_datasec (abfd) == NULL)
+ goto fail;
+ core_regsec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg",
+ SEC_HAS_CONTENTS);
+ if (core_regsec (abfd) == NULL)
+ goto fail;
+
+ core_datasec (abfd)->size = NBPG * u.u_dsize
+#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
+ - NBPG * u.u_tsize
+#endif
+ ;
core_stacksec (abfd)->size = NBPG * u.u_ssize;
- core_regsec (abfd)->size = NBPG * UPAGES; /* Larger than sizeof struct u */
+ core_regsec (abfd)->size = NBPG * UPAGES; /* Larger than sizeof struct u */
/* What a hack... we'd like to steal it from the exec file,
since the upage does not seem to provide it. FIXME. */
#else
core_datasec (abfd)->vma = HOST_TEXT_START_ADDR + (NBPG * u.u_tsize);
#endif
+
+#ifdef HOST_STACK_START_ADDR
+ core_stacksec (abfd)->vma = HOST_STACK_START_ADDR;
+#else
core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize);
+#endif
+
/* This is tricky. As the "register section", we give them the entire
upage and stack. u.u_ar0 points to where "register 0" is stored.
There are two tricks with this, though. One is that the rest of the
by setting the .regs section up so that its virtual memory address
0 is at the place pointed to by u_ar0 (by setting the vma of the start
of the section to -u_ar0). GDB uses this info to locate the regs,
- using minor trickery to get around the offset-or-absolute-addr problem. */
- core_regsec (abfd)->vma = 0 - (int) u.u_ar0;
+ using minor trickery to get around the offset-or-absolute-addr problem. */
+ core_regsec (abfd)->vma = - (bfd_vma) (unsigned long) u.u_ar0;
core_datasec (abfd)->filepos = NBPG * UPAGES;
- core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize;
- core_regsec (abfd)->filepos = 0; /* Register segment is the upage */
+ core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize
+#ifdef TRAD_CORE_DSIZE_INCLUDES_TSIZE
+ - NBPG * u.u_tsize
+#endif
+ ;
+ core_regsec (abfd)->filepos = 0; /* Register segment is the upage */
/* Align to word at least */
core_stacksec (abfd)->alignment_power = 2;
core_datasec (abfd)->alignment_power = 2;
core_regsec (abfd)->alignment_power = 2;
- abfd->sections = core_stacksec (abfd);
- core_stacksec (abfd)->next = core_datasec (abfd);
- core_datasec (abfd)->next = core_regsec (abfd);
- abfd->section_count = 3;
-
return abfd->xvec;
+
+ fail:
+ bfd_release (abfd, abfd->tdata.any);
+ abfd->tdata.any = NULL;
+ bfd_section_list_clear (abfd);
+ return NULL;
}
-char *
-trad_unix_core_file_failing_command (abfd)
- bfd *abfd;
+static char *
+trad_unix_core_file_failing_command (bfd *abfd)
{
- if (*core_upage (abfd)->u_comm)
- return core_upage (abfd)->u_comm;
+#ifndef NO_CORE_COMMAND
+ char *com = abfd->tdata.trad_core_data->u.u_comm;
+ if (*com)
+ return com;
else
+#endif
return 0;
}
-/* ARGSUSED */
-int
-trad_unix_core_file_failing_signal (ignore_abfd)
- bfd *ignore_abfd;
+static int
+trad_unix_core_file_failing_signal (bfd *ignore_abfd ATTRIBUTE_UNUSED)
{
+#ifdef TRAD_UNIX_CORE_FILE_FAILING_SIGNAL
+ return TRAD_UNIX_CORE_FILE_FAILING_SIGNAL(ignore_abfd);
+#else
return -1; /* FIXME, where is it? */
-}
-
-/* ARGSUSED */
-boolean
-trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
- bfd *core_bfd, *exec_bfd;
-{
- return true; /* FIXME, We have no way of telling at this point */
+#endif
}
\f
-/* No archive file support via this BFD */
-#define trad_unix_openr_next_archived_file bfd_generic_openr_next_archived_file
-#define trad_unix_generic_stat_arch_elt bfd_generic_stat_arch_elt
-#define trad_unix_slurp_armap bfd_false
-#define trad_unix_slurp_extended_name_table bfd_true
-#define trad_unix_write_armap (PROTO (boolean, (*), \
- (bfd *arch, unsigned int elength, struct orl *map, int orl_count, \
- int stridx))) bfd_false
-#define trad_unix_truncate_arname bfd_dont_truncate_arname
-#define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
-
-#define trad_unix_close_and_cleanup bfd_generic_close_and_cleanup
-#define trad_unix_set_section_contents (PROTO(boolean, (*), \
- (bfd *abfd, asection *section, PTR data, file_ptr offset, \
- bfd_size_type count))) bfd_false
-#define trad_unix_get_section_contents bfd_generic_get_section_contents
-#define trad_unix_new_section_hook (PROTO (boolean, (*), \
- (bfd *, sec_ptr))) bfd_true
-#define trad_unix_get_symtab_upper_bound bfd_0u
-#define trad_unix_get_symtab (PROTO (unsigned int, (*), \
- (bfd *, struct symbol_cache_entry **))) bfd_0u
-#define trad_unix_get_reloc_upper_bound (PROTO (unsigned int, (*), \
- (bfd *, sec_ptr))) bfd_0u
-#define trad_unix_canonicalize_reloc (PROTO (unsigned int, (*), \
- (bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
-#define trad_unix_make_empty_symbol (PROTO ( \
- struct symbol_cache_entry *, (*), (bfd *))) bfd_false
-#define trad_unix_print_symbol (PROTO (void, (*), \
- (bfd *, PTR, struct symbol_cache_entry *, \
- bfd_print_symbol_type))) bfd_false
-#define trad_unix_get_lineno (PROTO (alent *, (*), \
- (bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
-#define trad_unix_set_arch_mach (PROTO (boolean, (*), \
- (bfd *, enum bfd_architecture, unsigned long))) bfd_false
-#define trad_unix_find_nearest_line (PROTO (boolean, (*), \
- (bfd *abfd, struct sec *section, \
- struct symbol_cache_entry **symbols,bfd_vma offset, \
- CONST char **file, CONST char **func, unsigned int *line))) bfd_false
-#define trad_unix_sizeof_headers (PROTO (int, (*), \
- (bfd *, boolean))) bfd_0
-
-#define trad_unix_bfd_debug_info_start bfd_void
-#define trad_unix_bfd_debug_info_end bfd_void
-#define trad_unix_bfd_debug_info_accumulate (PROTO (void, (*), \
- (bfd *, struct sec *))) bfd_void
-
/* If somebody calls any byte-swapping routines, shoot them. */
-void
-swap_abort()
+static void
+swap_abort (void)
{
- abort(); /* This way doesn't require any declaration for ANSI to fuck up */
+ abort (); /* This way doesn't require any declaration for ANSI to fuck up */
}
-#define NO_GET ((PROTO(bfd_vma, (*), ( bfd_byte *))) swap_abort )
-#define NO_PUT ((PROTO(void, (*), (bfd_vma, bfd_byte *))) swap_abort )
-bfd_target trad_core_vec =
+#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_trad_vec =
{
"trad-core",
bfd_target_unknown_flavour,
- true, /* target byte order */
- true, /* target headers byte order */
+ 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 | DYNAMIC | WP_TEXT | D_PAGED),
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
- ' ', /* ar_pad_char */
- 16, /* ar_max_namelen */
- 3, /* minimum alignment power */
- NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* data */
- NO_GET, NO_PUT, NO_GET, NO_PUT, NO_GET, NO_PUT, /* hdrs */
-
- {_bfd_dummy_target, _bfd_dummy_target,
- _bfd_dummy_target, trad_unix_core_file_p},
- {bfd_false, bfd_false, /* bfd_create_object */
- bfd_false, bfd_false},
- {bfd_false, bfd_false, /* bfd_write_contents */
- bfd_false, bfd_false},
-
- JUMP_TABLE(trad_unix)
-};
+ 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 */
+ trad_unix_core_file_p /* a core file */
+ },
+ { /* bfd_set_format */
+ _bfd_bool_bfd_false_error,
+ _bfd_bool_bfd_false_error,
+ _bfd_bool_bfd_false_error,
+ _bfd_bool_bfd_false_error
+ },
+ { /* bfd_write_contents */
+ _bfd_bool_bfd_false_error,
+ _bfd_bool_bfd_false_error,
+ _bfd_bool_bfd_false_error,
+ _bfd_bool_bfd_false_error
+ },
+
+ BFD_JUMP_TABLE_GENERIC (_bfd_generic),
+ BFD_JUMP_TABLE_COPY (_bfd_generic),
+ BFD_JUMP_TABLE_CORE (trad_unix),
+ 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 */
+ };