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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [osf-core.c] - Blame information for rev 225

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1 24 jeremybenn
/* BFD back-end for OSF/1 core files.
2 225 jeremybenn
   Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2005, 2006,
3 24 jeremybenn
   2007 Free Software Foundation, Inc.
4
 
5
   This file is part of BFD, the Binary File Descriptor library.
6
 
7
   This program is free software; you can redistribute it and/or modify
8
   it under the terms of the GNU General Public License as published by
9
   the Free Software Foundation; either version 3 of the License, or
10
   (at your option) any later version.
11
 
12
   This program is distributed in the hope that it will be useful,
13
   but WITHOUT ANY WARRANTY; without even the implied warranty of
14
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
   GNU General Public License for more details.
16
 
17
   You should have received a copy of the GNU General Public License
18
   along with this program; if not, write to the Free Software
19
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20
   MA 02110-1301, USA.  */
21
 
22
 
23
/* This file can only be compiled on systems which use OSF/1 style
24
   core files.  */
25
 
26
#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
29
 
30
#include <sys/user.h>
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#ifdef OSF_CORE
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#include <sys/core.h>
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#endif
34
 
35
/* forward declarations */
36
 
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static asection *make_bfd_asection
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  PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr));
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static const bfd_target *osf_core_core_file_p
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  PARAMS ((bfd *));
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static char *osf_core_core_file_failing_command
42
  PARAMS ((bfd *));
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static int osf_core_core_file_failing_signal
44
  PARAMS ((bfd *));
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#define osf_core_core_file_matches_executable_p generic_core_file_matches_executable_p
46
static void swap_abort
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  PARAMS ((void));
48
 
49
/* These are stored in the bfd's tdata */
50
 
51
struct osf_core_struct
52
{
53
  int sig;
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  char cmd[MAXCOMLEN + 1];
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};
56
 
57
#define core_hdr(bfd) ((bfd)->tdata.osf_core_data)
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#define core_signal(bfd) (core_hdr(bfd)->sig)
59
#define core_command(bfd) (core_hdr(bfd)->cmd)
60
 
61
static asection *
62
make_bfd_asection (abfd, name, flags, size, vma, filepos)
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     bfd *abfd;
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     const char *name;
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     flagword flags;
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     bfd_size_type size;
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     bfd_vma vma;
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     file_ptr filepos;
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{
70
  asection *asect;
71
 
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  asect = bfd_make_section_anyway_with_flags (abfd, name, flags);
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  if (!asect)
74
    return NULL;
75
 
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  asect->size = size;
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  asect->vma = vma;
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  asect->filepos = filepos;
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  asect->alignment_power = 8;
80
 
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  return asect;
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}
83
 
84
static const bfd_target *
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osf_core_core_file_p (abfd)
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     bfd *abfd;
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{
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  int val;
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  int i;
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  char *secname;
91
  struct core_filehdr core_header;
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  bfd_size_type amt;
93
 
94
  amt = sizeof core_header;
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  val = bfd_bread ((PTR) &core_header, amt, abfd);
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  if (val != sizeof core_header)
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    return NULL;
98
 
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  if (! CONST_STRNEQ (core_header.magic, "Core"))
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    return NULL;
101
 
102
  core_hdr (abfd) = (struct osf_core_struct *)
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    bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct));
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  if (!core_hdr (abfd))
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    return NULL;
106
 
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  strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);
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  core_signal (abfd) = core_header.signo;
109
 
110
  for (i = 0; i < core_header.nscns; i++)
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    {
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      struct core_scnhdr core_scnhdr;
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      flagword flags;
114
 
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      amt = sizeof core_scnhdr;
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      val = bfd_bread ((PTR) &core_scnhdr, amt, abfd);
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      if (val != sizeof core_scnhdr)
118
        break;
119
 
120
      /* Skip empty sections.  */
121
      if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0)
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        continue;
123
 
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      switch (core_scnhdr.scntype)
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        {
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        case SCNRGN:
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          secname = ".data";
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          flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
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          break;
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        case SCNSTACK:
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          secname = ".stack";
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          flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
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          break;
134
        case SCNREGS:
135
          secname = ".reg";
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          flags = SEC_HAS_CONTENTS;
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          break;
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        default:
139
          (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"),
140
                                 core_scnhdr.scntype);
141
          continue;
142
        }
143
 
144
      if (!make_bfd_asection (abfd, secname, flags,
145
                              (bfd_size_type) core_scnhdr.size,
146
                              (bfd_vma) core_scnhdr.vaddr,
147
                              (file_ptr) core_scnhdr.scnptr))
148
        goto fail;
149
    }
150
 
151
  /* OK, we believe you.  You're a core file (sure, sure).  */
152
 
153
  return abfd->xvec;
154
 
155
 fail:
156
  bfd_release (abfd, core_hdr (abfd));
157
  core_hdr (abfd) = NULL;
158
  bfd_section_list_clear (abfd);
159
  return NULL;
160
}
161
 
162
static char *
163
osf_core_core_file_failing_command (abfd)
164
     bfd *abfd;
165
{
166
  return core_command (abfd);
167
}
168
 
169
static int
170
osf_core_core_file_failing_signal (abfd)
171
     bfd *abfd;
172
{
173
  return core_signal (abfd);
174
}
175
 
176
/* If somebody calls any byte-swapping routines, shoot them.  */
177
static void
178
swap_abort()
179
{
180
  abort(); /* This way doesn't require any declaration for ANSI to fuck up */
181
}
182
 
183
#define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
184
#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
185
#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
186
#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
187
#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
188
#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
189
 
190
const bfd_target osf_core_vec =
191
  {
192
    "osf-core",
193
    bfd_target_unknown_flavour,
194
    BFD_ENDIAN_LITTLE,          /* target byte order */
195
    BFD_ENDIAN_LITTLE,          /* target headers byte order */
196
    (HAS_RELOC | EXEC_P |       /* object flags */
197
     HAS_LINENO | HAS_DEBUG |
198
     HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
199
    (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
200
    0,                                                      /* symbol prefix */
201
    ' ',                                                   /* ar_pad_char */
202
    16,                                                    /* ar_max_namelen */
203
    NO_GET64, NO_GETS64, NO_PUT64,      /* 64 bit data */
204
    NO_GET, NO_GETS, NO_PUT,            /* 32 bit data */
205
    NO_GET, NO_GETS, NO_PUT,            /* 16 bit data */
206
    NO_GET64, NO_GETS64, NO_PUT64,      /* 64 bit hdrs */
207
    NO_GET, NO_GETS, NO_PUT,            /* 32 bit hdrs */
208
    NO_GET, NO_GETS, NO_PUT,            /* 16 bit hdrs */
209
 
210
    {                           /* bfd_check_format */
211
      _bfd_dummy_target,                /* unknown format */
212
      _bfd_dummy_target,                /* object file */
213
      _bfd_dummy_target,                /* archive */
214
      osf_core_core_file_p              /* a core file */
215
    },
216
    {                           /* bfd_set_format */
217
      bfd_false, bfd_false,
218
      bfd_false, bfd_false
219
    },
220
    {                           /* bfd_write_contents */
221
      bfd_false, bfd_false,
222
      bfd_false, bfd_false
223
    },
224
 
225
    BFD_JUMP_TABLE_GENERIC (_bfd_generic),
226
    BFD_JUMP_TABLE_COPY (_bfd_generic),
227
    BFD_JUMP_TABLE_CORE (osf_core),
228
    BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
229
    BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
230
    BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
231
    BFD_JUMP_TABLE_WRITE (_bfd_generic),
232
    BFD_JUMP_TABLE_LINK (_bfd_nolink),
233
    BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
234
 
235
    NULL,
236
 
237
    (PTR) 0                      /* backend_data */
238
  };

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