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[/] [or1k/] [branches/] [oc/] [gdb-5.0/] [bfd/] [netbsd-core.c] - Blame information for rev 104

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1 104 markom
/* BFD back end for NetBSD style core files
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   Copyright 1988, 89, 91, 92, 93, 96, 1998 Free Software Foundation, Inc.
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   Written by Paul Kranenburg, EUR
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5
This file is part of BFD, the Binary File Descriptor library.
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7
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.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/param.h>
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#include <sys/dir.h>
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#include <signal.h>
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#include <sys/core.h>
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/*
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 * FIXME: On NetBSD/sparc CORE_FPU_OFFSET should be (sizeof(struct trapframe))
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 */
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struct netbsd_core_struct {
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        struct core core;
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} *rawptr;
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/* forward declarations */
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static const bfd_target *       netbsd_core_file_p PARAMS ((bfd *abfd));
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static char *           netbsd_core_file_failing_command PARAMS ((bfd *abfd));
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static int              netbsd_core_file_failing_signal PARAMS ((bfd *abfd));
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static boolean          netbsd_core_file_matches_executable_p
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                         PARAMS ((bfd *core_bfd, bfd *exec_bfd));
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static void             swap_abort PARAMS ((void));
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/* Handle NetBSD-style core dump file.  */
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/* ARGSUSED */
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static const bfd_target *
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netbsd_core_file_p (abfd)
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     bfd *abfd;
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{
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        int             i, val, offset;
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        asection        *asect, *asect2;
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        struct core     core;
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        struct coreseg  coreseg;
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        val = bfd_read ((void *)&core, 1, sizeof core, abfd);
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        if (val != sizeof core) {
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                /* Too small to be a core file */
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                bfd_set_error(bfd_error_wrong_format);
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                return 0;
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        }
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        if (CORE_GETMAGIC(core) != COREMAGIC) {
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                bfd_set_error(bfd_error_wrong_format);
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                return 0;
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        }
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        rawptr = (struct netbsd_core_struct *)
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                bfd_zalloc (abfd, sizeof (struct netbsd_core_struct));
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        if (rawptr == NULL) {
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                bfd_set_error(bfd_error_no_memory);
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                return 0;
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        }
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        rawptr->core = core;
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        abfd->tdata.netbsd_core_data = rawptr;
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        offset = core.c_hdrsize;
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        for (i = 0; i < core.c_nseg; i++) {
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                if (bfd_seek (abfd, offset, SEEK_SET) != 0)
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                        goto punt;
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                val = bfd_read ((void *)&coreseg, 1, sizeof coreseg, abfd);
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                if (val != sizeof coreseg) {
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                        bfd_set_error(bfd_error_file_truncated);
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                        goto punt;
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                }
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                if (CORE_GETMAGIC(coreseg) != CORESEGMAGIC) {
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                        bfd_set_error(bfd_error_wrong_format);
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                        goto punt;
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                }
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                offset += core.c_seghdrsize;
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                asect = (asection *) bfd_zalloc (abfd, sizeof(asection));
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                if (asect == NULL) {
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                        bfd_set_error(bfd_error_no_memory);
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                        goto punt;
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                }
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                asect->_raw_size = coreseg.c_size;
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                asect->vma = coreseg.c_addr;
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                asect->filepos = offset;
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                asect->alignment_power = 2;
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                asect->next = abfd->sections;
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                abfd->sections = asect;
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                abfd->section_count++;
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                offset += coreseg.c_size;
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                switch (CORE_GETFLAG(coreseg)) {
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                case CORE_CPU:
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                        asect->name = ".reg";
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                        asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
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#ifdef CORE_FPU_OFFSET
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                        /* Hackish... */
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                        asect->_raw_size = CORE_FPU_OFFSET;
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                        asect2 = (asection *)bfd_zalloc (abfd,
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                                                         sizeof (asection));
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                        if (asect2 == NULL) {
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                                bfd_set_error(bfd_error_no_memory);
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                                goto punt;
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                        }
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                        asect2->_raw_size = coreseg.c_size - CORE_FPU_OFFSET;
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                        asect2->vma = 0;
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                        asect2->filepos = asect->filepos + CORE_FPU_OFFSET;
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                        asect2->alignment_power = 2;
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                        asect2->next = abfd->sections;
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                        asect2->name = ".reg2";
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                        asect2->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
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                        abfd->sections = asect2;
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                        abfd->section_count++;
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#endif
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140
                        break;
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                case CORE_DATA:
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                        asect->name = ".data";
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                        asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS;
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                        break;
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                case CORE_STACK:
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                        asect->name = ".stack";
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                        asect->flags = SEC_ALLOC+SEC_LOAD+SEC_HAS_CONTENTS;
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                        break;
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                }
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        }
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152
        /* OK, we believe you.  You're a core file (sure, sure).  */
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        return abfd->xvec;
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155
punt:   {
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                asection        *anext;
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                for (asect = abfd->sections; asect; asect = anext) {
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                        anext = asect->next;
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                        free((void *)asect);
160
                }
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        }
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        free ((void *)rawptr);
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        abfd->tdata.netbsd_core_data = NULL;
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        abfd->sections = NULL;
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        abfd->section_count = 0;
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        return 0;
167
}
168
 
169
static char*
170
netbsd_core_file_failing_command (abfd)
171
        bfd *abfd;
172
{
173
 /*return core_command (abfd);*/
174
  return abfd->tdata.netbsd_core_data->core.c_name;
175
}
176
 
177
/* ARGSUSED */
178
static int
179
netbsd_core_file_failing_signal (abfd)
180
        bfd *abfd;
181
{
182
  /*return core_signal (abfd);*/
183
  return abfd->tdata.netbsd_core_data->core.c_signo;
184
}
185
 
186
/* ARGSUSED */
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static boolean
188
netbsd_core_file_matches_executable_p  (core_bfd, exec_bfd)
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     bfd *core_bfd, *exec_bfd;
190
{
191
  return true;          /* FIXME, We have no way of telling at this point */
192
}
193
 
194
/* If somebody calls any byte-swapping routines, shoot them.  */
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static void
196
swap_abort()
197
{
198
  abort(); /* This way doesn't require any declaration for ANSI to fuck up */
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}
200
#define NO_GET  ((bfd_vma (*) PARAMS ((   const bfd_byte *))) swap_abort )
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#define NO_PUT  ((void    (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
202
#define NO_SIGNED_GET \
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  ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
204
 
205
const bfd_target netbsd_core_vec =
206
  {
207
    "netbsd-core",
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    bfd_target_unknown_flavour,
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    BFD_ENDIAN_UNKNOWN,         /* target byte order */
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    BFD_ENDIAN_UNKNOWN,         /* 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 | WP_TEXT | D_PAGED),
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    (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
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    0,                                                      /* symbol prefix */
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    ' ',                                                   /* ar_pad_char */
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    16,                                                    /* ar_max_namelen */
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    NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit data */
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    NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit data */
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    NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit data */
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    NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit hdrs */
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    NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit hdrs */
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    NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit hdrs */
224
 
225
    {                           /* bfd_check_format */
226
     _bfd_dummy_target,         /* unknown format */
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     _bfd_dummy_target,         /* object file */
228
     _bfd_dummy_target,         /* archive */
229
     netbsd_core_file_p         /* a core file */
230
    },
231
    {                           /* bfd_set_format */
232
     bfd_false, bfd_false,
233
     bfd_false, bfd_false
234
    },
235
    {                           /* bfd_write_contents */
236
     bfd_false, bfd_false,
237
     bfd_false, bfd_false
238
    },
239
 
240
       BFD_JUMP_TABLE_GENERIC (_bfd_generic),
241
       BFD_JUMP_TABLE_COPY (_bfd_generic),
242
       BFD_JUMP_TABLE_CORE (netbsd),
243
       BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
244
       BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
245
       BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
246
       BFD_JUMP_TABLE_WRITE (_bfd_generic),
247
       BFD_JUMP_TABLE_LINK (_bfd_nolink),
248
       BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
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250
    NULL,
251
 
252
    (PTR) 0                      /* backend_data */
253
};

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