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- /* BFD back end for traditional Unix core files (U-area and raw sections)
- Copyright (C) 1988, 1989, 1991 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. */
-
- /* 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 "libbfd.h"
-
- #include "libaout.h" /* BFD a.out internal data structures */
-
- #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 */
- #include <sys/file.h>
- #include <sys/stat.h>
-
- #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;
- };
-
- /* ARGSUSED */
- bfd_target *
- trad_unix_core_file_p (abfd)
- bfd *abfd;
- {
- #if HOST_SYS == SUN4_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. */
-
- val = bfd_read ((void *)&u, 1, sizeof u, abfd);
- if (val != sizeof u)
- return 0; /* Too small to be a core file */
-
- /* Sanity check perhaps??? */
- if (u.u_dsize > 0x1000000) /* Remember, it's in pages... */
- return 0;
- if (u.u_ssize > 0x1000000)
- return 0;
- /* Check that the size claimed is no greater than the file size. FIXME. */
-
- /* 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;
- 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";
-
- core_stacksec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_datasec (abfd)->flags = SEC_ALLOC + SEC_LOAD;
- core_regsec (abfd)->flags = SEC_ALLOC;
-
- 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 */
-
- /* 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;
-
- 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 */
-
- /* 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
- }
-
- char *
- trad_unix_core_file_failing_command (abfd)
- bfd *abfd;
- {
- if (*core_upage (abfd)->u_comm)
- return core_upage (abfd)->u_comm;
- else
- return 0;
- }
-
- /* ARGSUSED */
- int
- trad_unix_core_file_failing_signal (ignore_abfd)
- bfd *ignore_abfd;
- {
- 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 */
- }
-