+/* 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. */
+
+/* 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 "libbfd.h"
+#include "libaout.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 <sys/user.h> /* After a.out.h */
+#include <sys/file.h>
+
+#include <errno.h>
+
+ 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)
+
+/* Handle 4.2-style (and perhaps also sysV-style) core dump file. */
+
+/* ARGSUSED */
+bfd_target *
+trad_unix_core_file_p (abfd)
+ bfd *abfd;
+
+{
+ int val;
+ struct user u;
+ /* This struct is just for allocating two things with one zalloc, so
+ they will be freed together, without violating alignment constraints. */
+
+
+ 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 = (struct trad_core_struct *)bfd_zalloc (abfd, sizeof (struct trad_core_struct));
+ if (rawptr == NULL) {
+ bfd_error = no_memory;
+ return 0;
+ }
+
+ 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 free
+ them separately. */
+
+ 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) {
+ 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)->_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. */
+#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
+ core_stacksec (abfd)->vma = HOST_STACK_END_ADDR - (NBPG * u.u_ssize);
+ /* 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;
+ 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;
+}
+
+char *
+trad_unix_core_file_failing_command (abfd)
+ bfd *abfd;
+{
+#if !defined(NO_CORE_COMMAND) && BSD < 199207
+ 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;
+{
+ 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 */
+}
+\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, \
+ 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 (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
+#define trad_unix_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
+#define trad_unix_bfd_relax_section bfd_generic_relax_section
+/* 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 ((PROTO(bfd_vma, (*), ( bfd_byte *))) swap_abort )
+#define NO_PUT ((PROTO(void, (*), (bfd_vma, 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 | DYNAMIC | WP_TEXT | D_PAGED),
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ '_', /* symbol prefix */
+ ' ', /* 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)
+};
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