-/* 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 1988, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Written by John Gilmore of Cygnus Support.
+
+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 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. */
+
+/* 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
+
+ */
-/* This file does not define a particular back-end, but it defines routines
- that can be used by other back-ends. */
-#include <sysdep.h>
#include "bfd.h"
-#include <stdio.h>
+#include "sysdep.h"
#include "libbfd.h"
+#include "libaout.h" /* BFD a.out internal data structures */
-#include "liba.out.h" /* BFD a.out internal data structures */
-
+#include <stdio.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>
-#include <machine/reg.h>
#include <sys/user.h> /* After a.out.h */
+#if 0
+/* file.h is included by std-host.h. So we better not try to include it
+ twice; on some systems (dpx2) it is not protected against multiple
+ inclusion. I have checked that all the hosts which use this file
+ include sys/file.h in the hosts file. */
#include <sys/file.h>
-#include <sys/stat.h>
+#endif
#include <errno.h>
-/* 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)
-
-/* These are stored in the bfd's tdata */
-struct core_data {
- struct user *upage; /* core file header */
- asection *data_section;
- asection *stack_section;
- asection *reg_section;
-};
+ struct trad_core_struct
+ {
+ asection *data_section;
+ asection *stack_section;
+ asection *reg_section;
+ struct user u;
+ } *rawptr;
+
+#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 */
+
+bfd_target * trad_unix_core_file_p PARAMS ((bfd *abfd));
+char * trad_unix_core_file_failing_command PARAMS ((bfd *abfd));
+int trad_unix_core_file_failing_signal PARAMS ((bfd *abfd));
+boolean trad_unix_core_file_matches_executable_p
+ PARAMS ((bfd *core_bfd, bfd *exec_bfd));
+
+/* Handle 4.2-style (and perhaps also sysV-style) core dump file. */
/* ARGSUSED */
bfd_target *
trad_unix_core_file_p (abfd)
bfd *abfd;
+
{
-#if HOST_SYS == SUN_SYS
- return 0;
-#else
int val;
- char *rawptr;
struct user u;
- unsigned int reg_offset, fp_reg_offset;
-
- /* 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, TRAD_CORE_USER_OFFSET, SEEK_SET) == 0)
+ return 0;
+#endif
+
val = bfd_read ((void *)&u, 1, sizeof u, abfd);
if (val != sizeof u)
- return 0; /* Too small to be a core file */
+ {
+ /* Too small to be a core file */
+ bfd_error = wrong_format;
+ return 0;
+ }
/* Sanity check perhaps??? */
if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
- return 0;
+ {
+ 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_error = wrong_format;
+ return 0;
+ }
+
+ /* Check that the size claimed is no greater than the file size. */
+ {
+ FILE *stream = bfd_cache_lookup (abfd);
+ struct stat statbuf;
+ if (stream == NULL)
+ return 0;
+ if (fstat (fileno (stream), &statbuf) < 0)
+ {
+ bfd_error = system_call_error;
+ return 0;
+ }
+ if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size)
+ {
+ bfd_error = file_truncated;
+ return 0;
+ }
+#ifndef TRAD_CORE_ALLOW_ANY_EXTRA_SIZE
+ if (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
+ < 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_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));
+ rawptr = (struct trad_core_struct *)
+ bfd_zalloc (abfd, sizeof (struct trad_core_struct));
if (rawptr == NULL) {
bfd_error = no_memory;
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! */
+ abfd->tdata.trad_core_data = rawptr;
+
+ rawptr->u = u; /*Copy the uarea into the tdata part of the bfd */
- /* create the sections. This is raunchy, but bfd_close wants to reclaim
- them */
- core_stacksec (abfd) = (asection *) zalloc (sizeof (asection));
+ /* 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:
+ loser:
bfd_error = no_memory;
free ((void *)rawptr);
return 0;
}
core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
if (core_datasec (abfd) == NULL) {
-loser1:
+ 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_datasec (abfd)->name = ".data";
core_regsec (abfd)->name = ".reg";
- core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_regsec (abfd)->flags = SEC_ALLOC;
+ 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;
- core_stacksec (abfd)->size = NBPG * u.u_ssize;
- core_regsec (abfd)->size = NBPG * UPAGES; /* Larger than sizeof struct u */
+ core_datasec (abfd)->_raw_size = NBPG * u.u_dsize;
+ core_stacksec (abfd)->_raw_size = NBPG * u.u_ssize;
+ core_regsec (abfd)->_raw_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 = 0 - (int) u.u_ar0;
core_datasec (abfd)->filepos = NBPG * UPAGES;
+#ifdef TRAD_CORE_STACK_FILEPOS
+ core_stacksec (abfd)->filepos = TRAD_CORE_STACK_FILEPOS;
+#else
core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize;
- core_regsec (abfd)->filepos = 0; /* Register segment is the upage */
+#endif
+ core_regsec (abfd)->filepos = 0; /* Register segment is the upage */
/* Align to word at least */
core_stacksec (abfd)->alignment_power = 2;
abfd->section_count = 3;
return abfd->xvec;
-#endif
}
char *
trad_unix_core_file_failing_command (abfd)
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;
}
trad_unix_core_file_failing_signal (ignore_abfd)
bfd *ignore_abfd;
{
+#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 */
{
return true; /* FIXME, We have no way of telling at this point */
}
+\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 (boolean (*) PARAMS \
+ ((bfd *arch, unsigned int elength, struct orl *map, \
+ unsigned 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 (boolean (*) PARAMS \
+ ((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 (boolean (*) PARAMS \
+ ((bfd *, sec_ptr))) bfd_true
+#define trad_unix_get_symtab_upper_bound bfd_0u
+#define trad_unix_get_symtab (unsigned int (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry **))) bfd_0u
+#define trad_unix_get_reloc_upper_bound (unsigned int (*) PARAMS \
+ ((bfd *, sec_ptr))) bfd_0u
+#define trad_unix_canonicalize_reloc (unsigned int (*) PARAMS \
+ ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
+#define trad_unix_make_empty_symbol (struct symbol_cache_entry * \
+ (*) PARAMS ((bfd *))) bfd_false
+#define trad_unix_print_symbol (void (*) PARAMS \
+ ((bfd *, PTR, struct symbol_cache_entry *, \
+ bfd_print_symbol_type))) bfd_false
+#define trad_unix_get_symbol_info (void (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry *, \
+ symbol_info *))) bfd_false
+#define trad_unix_get_lineno (alent * (*) PARAMS \
+ ((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
+#define trad_unix_set_arch_mach (boolean (*) PARAMS \
+ ((bfd *, enum bfd_architecture, unsigned long))) bfd_false
+#define trad_unix_find_nearest_line (boolean (*) PARAMS \
+ ((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 (int (*) PARAMS \
+ ((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 (void (*) PARAMS \
+ ((bfd *, struct sec *))) bfd_void
+#define trad_unix_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
+#define trad_unix_bfd_relax_section bfd_generic_relax_section
+#define trad_unix_bfd_reloc_type_lookup \
+ ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
+#define trad_unix_bfd_make_debug_symbol \
+ ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
+#define trad_unix_bfd_link_hash_table_create \
+ ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
+#define trad_unix_bfd_link_add_symbols \
+ ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
+#define trad_unix_bfd_final_link \
+ ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
+
+/* If somebody calls any byte-swapping routines, shoot them. */
+void
+swap_abort()
+{
+ abort(); /* This way doesn't require any declaration for ANSI to fuck up */
+}
+#define NO_GET ((bfd_vma (*) PARAMS (( bfd_byte *))) swap_abort )
+#define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
+#define NO_SIGNED_GET ((bfd_signed_vma (*) PARAMS ((bfd_byte *))) swap_abort )
+
+bfd_target trad_core_vec =
+ {
+ "trad-core",
+ bfd_target_unknown_flavour,
+ true, /* target byte order */
+ true, /* 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 */
+ 3, /* minimum alignment power */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */
+ NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */
+ NO_GET, NO_SIGNED_GET, 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_false, bfd_false,
+ bfd_false, bfd_false
+ },
+ { /* bfd_write_contents */
+ bfd_false, bfd_false,
+ bfd_false, bfd_false
+ },
+
+ JUMP_TABLE(trad_unix),
+ (PTR) 0 /* backend_data */
+};
projects / binutils.git / blobdiff