-/* BFD back end for traditional Unix core files (U-area and sections, raw)
- Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. */
+/* BFD back end for traditional Unix core files (U-area and raw sections)
+ Copyright (C) 1988-2019 Free Software Foundation, Inc.
+ Written by John Gilmore of Cygnus Support.
-/* This file does not define a particular back-end, but it defines routines
- that can be used by other back-ends. */
-#include <sysdep.h>
+ 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 <stdio.h>
#include "libbfd.h"
+#include "libaout.h" /* BFD a.out internal data structures */
-#include "liba.out.h" /* BFD a.out internal data structures */
-
-#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 <sys/stat.h>
-#include <errno.h>
+#ifdef TRAD_HEADER
+#include TRAD_HEADER
+#endif
-/* need this cast b/c ptr is really void * */
-#define core_hdr(bfd) (((struct core_data *) (bfd->tdata))->hdr)
-#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) (((struct core_data *) ((bfd)->tdata))->upage)
+#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;
};
-/* ARGSUSED */
-bfd_target *
-trad_unix_core_file_p (abfd)
- bfd *abfd;
+#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. */
+
+static const bfd_target *
+trad_unix_core_file_p (bfd *abfd)
{
-#if HOST_SYS == SUN_SYS
- return 0;
-#else
int val;
- char *rawptr;
struct user u;
- unsigned int reg_offset, fp_reg_offset;
+ struct trad_core_struct *rawptr;
+ bfd_size_type amt;
+ flagword flags;
- /* 4.2-style (and perhaps also sysV-style) core dump file. */
+#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_read ((void *)&u, 1, sizeof u, abfd);
+ 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 = (char *)zalloc (sizeof (u) + sizeof (struct core_data));
- if (rawptr == NULL) {
- bfd_error = no_memory;
+ amt = sizeof (struct trad_core_struct);
+ rawptr = (struct trad_core_struct *) bfd_zmalloc (amt);
+ if (rawptr == NULL)
return 0;
- }
-
- set_tdata (abfd, (struct core_data *)rawptr);
- core_upage (abfd) = (struct user *)(rawptr + sizeof (struct core_data));
- *core_upage (abfd) = u; /* Save that upage! */
-
- /* create the sections. This is raunchy, but bfd_close wants to reclaim
- them */
- core_stacksec (abfd) = (asection *) zalloc (sizeof (asection));
- if (core_stacksec (abfd) == NULL) {
-loser:
- bfd_error = no_memory;
- free ((void *)rawptr);
- 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";
+ abfd->tdata.trad_core_data = rawptr;
- core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_regsec (abfd)->flags = SEC_ALLOC;
+ rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
- core_datasec (abfd)->size = NBPG * u.u_dsize;
+ /* 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. */
- core_datasec (abfd)->vma = TEXT_START_ADDR + (NBPG * u.u_tsize);
- core_stacksec (abfd)->vma = STACK_END_ADDR - (NBPG * u.u_ssize);
- core_regsec (abfd)->vma = -1;
+#ifdef HOST_DATA_START_ADDR
+ core_datasec (abfd)->vma = HOST_DATA_START_ADDR;
+#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
+ registers might be at positive or negative (or both) displacements
+ from *u_ar0. The other is that u_ar0 is sometimes an absolute address
+ in kernel memory, and on other systems it is an offset from the beginning
+ of the `struct user'.
+
+ As a practical matter, we don't know where the registers actually are,
+ so we have to pass the whole area to GDB. We encode the value of u_ar0
+ 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 = - (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;
-#endif
+
+ 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? */
+#endif
}
-
-/* ARGSUSED */
-boolean
-trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
- bfd *core_bfd, *exec_bfd;
+\f
+/* If somebody calls any byte-swapping routines, shoot them. */
+static void
+swap_abort (void)
{
- return true; /* FIXME, We have no way of telling at this point */
+ 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 core_trad_vec =
+ {
+ "trad-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 | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ 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 */
+ };
projects / deliverable / binutils-gdb.git / blobdiff