6a46902732
* trad-core.c: Document how to use it nowadays. * i386aout.c, newsos3.c: Clean up. * i386coff.c: Allow 386 coff files to be used as core files too (for reading core files from embedded systems).
285 lines
9.7 KiB
C
285 lines
9.7 KiB
C
/* BFD back end for traditional Unix core files (U-area and raw sections)
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Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
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Written by John Gilmore of Cygnus Support.
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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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* To use this file on a particular host, configure the host with these
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parameters in the config/h-HOST file:
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HDEFINES=-DHOST_SYS=WHATEVER_SYS -DTRAD_CORE
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HDEPFILES=trad-core.o
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*/
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#include <sysdep.h>
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#include "bfd.h"
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#include <stdio.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/types.h>
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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 <machine/reg.h>
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#include <sys/user.h> /* After a.out.h */
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#include <sys/file.h>
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#include <errno.h>
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/* These are stored in the bfd's tdata */
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struct core_data {
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struct user *upage; /* core file header */
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asection *data_section;
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asection *stack_section;
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asection *reg_section;
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};
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#define core_hdr(bfd) (((struct core_data *) (bfd->tdata))->hdr)
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#define core_upage(bfd) (((struct core_data *) ((bfd)->tdata))->upage)
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#define core_datasec(bfd) (((struct core_data *) ((bfd)->tdata))->data_section)
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#define core_stacksec(bfd) (((struct core_data*)((bfd)->tdata))->stack_section)
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#define core_regsec(bfd) (((struct core_data *) ((bfd)->tdata))->reg_section)
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/* ARGSUSED */
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bfd_target *
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trad_unix_core_file_p (abfd)
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bfd *abfd;
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{
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#if HOST_SYS == SUN4_SYS
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return 0;
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#else
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int val;
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char *rawptr;
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struct user u;
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unsigned int reg_offset, fp_reg_offset;
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/* 4.2-style (and perhaps also sysV-style) core dump file. */
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val = bfd_read ((void *)&u, 1, sizeof u, abfd);
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if (val != sizeof u)
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return 0; /* Too small to be a core file */
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/* Sanity check perhaps??? */
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if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
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return 0;
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if (u.u_ssize > 0x1000000)
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return 0;
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/* Check that the size claimed is no greater than the file size. FIXME. */
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/* OK, we believe you. You're a core file (sure, sure). */
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/* Allocate both the upage and the struct core_data at once, so
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a single free() will free them both. */
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rawptr = (char *)zalloc (sizeof (u) + sizeof (struct core_data));
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if (rawptr == NULL) {
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bfd_error = no_memory;
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return 0;
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}
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set_tdata (abfd, (struct core_data *)rawptr);
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core_upage (abfd) = (struct user *)(rawptr + sizeof (struct core_data));
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*core_upage (abfd) = u; /* Save that upage! */
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/* create the sections. This is raunchy, but bfd_close wants to reclaim
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them */
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core_stacksec (abfd) = (asection *) zalloc (sizeof (asection));
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if (core_stacksec (abfd) == NULL) {
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loser:
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bfd_error = no_memory;
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free ((void *)rawptr);
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return 0;
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}
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core_datasec (abfd) = (asection *) zalloc (sizeof (asection));
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if (core_datasec (abfd) == NULL) {
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loser1:
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free ((void *)core_stacksec (abfd));
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goto loser;
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}
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core_regsec (abfd) = (asection *) zalloc (sizeof (asection));
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if (core_regsec (abfd) == NULL) {
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loser2:
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free ((void *)core_datasec (abfd));
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goto loser1;
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}
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core_stacksec (abfd)->name = ".stack";
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core_datasec (abfd)->name = ".data";
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core_regsec (abfd)->name = ".reg";
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core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
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core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
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core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
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core_datasec (abfd)->size = NBPG * u.u_dsize;
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core_stacksec (abfd)->size = NBPG * u.u_ssize;
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core_regsec (abfd)->size = NBPG * UPAGES; /* Larger than sizeof struct u */
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/* What a hack... we'd like to steal it from the exec file,
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since the upage does not seem to provide it. FIXME. */
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#ifdef HOST_DATA_START_ADDR
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core_datasec (abfd)->vma = HOST_DATA_START_ADDR;
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#else
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core_datasec (abfd)->vma = HOST_TEXT_START_ADDR + (NBPG * u.u_tsize);
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#endif
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core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize);
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core_regsec (abfd)->vma = -1;
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core_datasec (abfd)->filepos = NBPG * UPAGES;
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core_stacksec (abfd)->filepos = (NBPG * UPAGES) + NBPG * u.u_dsize;
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core_regsec (abfd)->filepos = 0; /* Register segment is the upage */
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/* Align to word at least */
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core_stacksec (abfd)->alignment_power = 2;
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core_datasec (abfd)->alignment_power = 2;
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core_regsec (abfd)->alignment_power = 2;
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abfd->sections = core_stacksec (abfd);
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core_stacksec (abfd)->next = core_datasec (abfd);
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core_datasec (abfd)->next = core_regsec (abfd);
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abfd->section_count = 3;
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return abfd->xvec;
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#endif
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}
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char *
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trad_unix_core_file_failing_command (abfd)
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bfd *abfd;
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{
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if (*core_upage (abfd)->u_comm)
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return core_upage (abfd)->u_comm;
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else
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return 0;
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}
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/* ARGSUSED */
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int
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trad_unix_core_file_failing_signal (ignore_abfd)
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bfd *ignore_abfd;
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{
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return -1; /* FIXME, where is it? */
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}
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/* ARGSUSED */
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boolean
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trad_unix_core_file_matches_executable_p (core_bfd, exec_bfd)
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bfd *core_bfd, *exec_bfd;
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{
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return true; /* FIXME, We have no way of telling at this point */
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}
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/* No archive file support via this BFD */
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#define trad_unix_openr_next_archived_file bfd_generic_openr_next_archived_file
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#define trad_unix_generic_stat_arch_elt bfd_generic_stat_arch_elt
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#define trad_unix_slurp_armap bfd_false
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#define trad_unix_slurp_extended_name_table bfd_true
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#define trad_unix_write_armap (PROTO (boolean, (*), \
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(bfd *arch, unsigned int elength, struct orl *map, int orl_count, \
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int stridx))) bfd_false
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#define trad_unix_truncate_arname bfd_dont_truncate_arname
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#define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file
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#define trad_unix_close_and_cleanup bfd_generic_close_and_cleanup
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#define trad_unix_set_section_contents (PROTO(boolean, (*), \
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(bfd *abfd, asection *section, PTR data, file_ptr offset, \
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bfd_size_type count))) bfd_false
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#define trad_unix_get_section_contents bfd_generic_get_section_contents
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#define trad_unix_new_section_hook (PROTO (boolean, (*), \
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(bfd *, sec_ptr))) bfd_true
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#define trad_unix_get_symtab_upper_bound bfd_0u
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#define trad_unix_get_symtab (PROTO (unsigned int, (*), \
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(bfd *, struct symbol_cache_entry **))) bfd_0u
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#define trad_unix_get_reloc_upper_bound (PROTO (unsigned int, (*), \
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(bfd *, sec_ptr))) bfd_0u
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#define trad_unix_canonicalize_reloc (PROTO (unsigned int, (*), \
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(bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
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#define trad_unix_make_empty_symbol (PROTO ( \
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struct symbol_cache_entry *, (*), (bfd *))) bfd_false
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#define trad_unix_print_symbol (PROTO (void, (*), \
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(bfd *, PTR, struct symbol_cache_entry *, \
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bfd_print_symbol_type))) bfd_false
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#define trad_unix_get_lineno (PROTO (alent *, (*), \
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(bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
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#define trad_unix_set_arch_mach (PROTO (boolean, (*), \
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(bfd *, enum bfd_architecture, unsigned long))) bfd_false
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#define trad_unix_find_nearest_line (PROTO (boolean, (*), \
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(bfd *abfd, struct sec *section, \
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struct symbol_cache_entry **symbols,bfd_vma offset, \
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CONST char **file, CONST char **func, unsigned int *line))) bfd_false
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#define trad_unix_sizeof_headers (PROTO (int, (*), \
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(bfd *, boolean))) bfd_0
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#define trad_unix_bfd_debug_info_start bfd_void
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#define trad_unix_bfd_debug_info_end bfd_void
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#define trad_unix_bfd_debug_info_accumulate (PROTO (void, (*), \
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(bfd *, struct sec *))) bfd_void
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bfd_target trad_core_big_vec =
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{
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"trad-core-big",
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bfd_target_unknown_flavour,
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true, /* target byte order */
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true, /* 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 | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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3, /* minimum alignment power */
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
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_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
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{_bfd_dummy_target, _bfd_dummy_target,
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_bfd_dummy_target, trad_unix_core_file_p},
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{bfd_false, bfd_false, /* bfd_create_object */
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bfd_false, bfd_false},
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{bfd_false, bfd_false, /* bfd_write_contents */
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bfd_false, bfd_false},
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JUMP_TABLE(trad_unix)
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};
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bfd_target trad_core_little_vec =
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{
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"trad-core-little",
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bfd_target_unknown_flavour,
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false, /* target byte order */
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false, /* 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 | DYNAMIC | WP_TEXT | D_PAGED),
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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' ', /* ar_pad_char */
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16, /* ar_max_namelen */
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3, /* minimum alignment power */
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putb16,
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_do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16,
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{_bfd_dummy_target, _bfd_dummy_target,
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_bfd_dummy_target, trad_unix_core_file_p},
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{bfd_false, bfd_false, /* bfd_create_object */
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bfd_false, bfd_false},
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{bfd_false, bfd_false, /* bfd_write_contents */
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bfd_false, bfd_false},
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JUMP_TABLE(trad_unix)
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};
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