mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-27 14:50:23 +00:00
271 lines
8.0 KiB
C
271 lines
8.0 KiB
C
/* BFD back-end for HPPA BSD core files.
|
||
Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2005,
|
||
2006, 2007, 2012 Free Software Foundation, Inc.
|
||
|
||
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA.
|
||
|
||
Written by the Center for Software Science at the University of Utah
|
||
and by Cygnus Support.
|
||
|
||
The core file structure for the Utah 4.3BSD and OSF1 ports on the
|
||
PA is a mix between traditional cores and hpux cores -- just
|
||
different enough that supporting this format would tend to add
|
||
gross hacks to trad-core.c or hpux-core.c. So instead we keep any
|
||
gross hacks isolated to this file. */
|
||
|
||
/* This file can only be compiled on systems which use HPPA-BSD style
|
||
core files.
|
||
|
||
I would not expect this to be of use to any other host/target, but
|
||
you never know. */
|
||
|
||
#include "sysdep.h"
|
||
#include "bfd.h"
|
||
#include "libbfd.h"
|
||
|
||
#if defined (HOST_HPPABSD)
|
||
|
||
#include "machine/vmparam.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>
|
||
|
||
#define hppabsd_core_core_file_matches_executable_p generic_core_file_matches_executable_p
|
||
#define hppabsd_core_core_file_pid _bfd_nocore_core_file_pid
|
||
|
||
/* These are stored in the bfd's tdata. */
|
||
|
||
struct hppabsd_core_struct
|
||
{
|
||
int sig;
|
||
char cmd[MAXCOMLEN + 1];
|
||
asection *data_section;
|
||
asection *stack_section;
|
||
asection *reg_section;
|
||
};
|
||
|
||
#define core_hdr(bfd) ((bfd)->tdata.hppabsd_core_data)
|
||
#define core_signal(bfd) (core_hdr(bfd)->sig)
|
||
#define core_command(bfd) (core_hdr(bfd)->cmd)
|
||
#define core_datasec(bfd) (core_hdr(bfd)->data_section)
|
||
#define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
|
||
#define core_regsec(bfd) (core_hdr(bfd)->reg_section)
|
||
|
||
static asection *
|
||
make_bfd_asection (bfd *abfd,
|
||
const char *name,
|
||
flagword flags,
|
||
bfd_size_type size,
|
||
file_ptr offset,
|
||
unsigned int alignment_power)
|
||
{
|
||
asection *asect;
|
||
|
||
asect = bfd_make_section_with_flags (abfd, name, flags);
|
||
if (!asect)
|
||
return NULL;
|
||
|
||
asect->size = size;
|
||
asect->filepos = offset;
|
||
asect->alignment_power = alignment_power;
|
||
|
||
return asect;
|
||
}
|
||
|
||
static const bfd_target *
|
||
hppabsd_core_core_file_p (bfd *abfd)
|
||
{
|
||
int val;
|
||
struct user u;
|
||
struct hppabsd_core_struct *coredata;
|
||
int clicksz;
|
||
|
||
/* Try to read in the u-area. We will need information from this
|
||
to know how to grok the rest of the core structures. */
|
||
val = bfd_bread ((void *) &u, (bfd_size_type) sizeof u, abfd);
|
||
if (val != sizeof u)
|
||
{
|
||
if (bfd_get_error () != bfd_error_system_call)
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
|
||
/* Get the page size out of the u structure. This will be different
|
||
for PA 1.0 machines and PA 1.1 machines. Yuk! */
|
||
clicksz = u.u_pcb.pcb_pgsz;
|
||
|
||
/* clicksz must be a power of two >= 2k. */
|
||
if (clicksz < 0x800
|
||
|| clicksz != (clicksz & -clicksz))
|
||
{
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
|
||
/* Sanity checks. Make sure the size of the core file matches the
|
||
the size computed from information within the core itself. */
|
||
{
|
||
struct stat statbuf;
|
||
|
||
if (bfd_stat (abfd, &statbuf) < 0)
|
||
return NULL;
|
||
|
||
if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size)
|
||
{
|
||
bfd_set_error (bfd_error_file_truncated);
|
||
return NULL;
|
||
}
|
||
if (clicksz * (UPAGES + u.u_dsize + u.u_ssize) < statbuf.st_size)
|
||
{
|
||
/* The file is too big. Maybe it's not a core file
|
||
or we otherwise have bad values for u_dsize and u_ssize). */
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
/* OK, we believe you. You're a core file (sure, sure). */
|
||
|
||
coredata = (struct hppabsd_core_struct *)
|
||
bfd_zalloc (abfd, (bfd_size_type) sizeof (struct hppabsd_core_struct));
|
||
if (!coredata)
|
||
return NULL;
|
||
|
||
/* Make the core data and available via the tdata part of the BFD. */
|
||
abfd->tdata.hppabsd_core_data = coredata;
|
||
|
||
/* Create the sections. */
|
||
core_stacksec (abfd) = make_bfd_asection (abfd, ".stack",
|
||
SEC_ALLOC + SEC_HAS_CONTENTS,
|
||
clicksz * u.u_ssize,
|
||
NBPG * (USIZE + KSTAKSIZE)
|
||
+ clicksz * u.u_dsize, 2);
|
||
if (core_stacksec (abfd) == NULL)
|
||
goto fail;
|
||
core_stacksec (abfd)->vma = USRSTACK;
|
||
|
||
core_datasec (abfd) = make_bfd_asection (abfd, ".data",
|
||
SEC_ALLOC + SEC_LOAD
|
||
+ SEC_HAS_CONTENTS,
|
||
clicksz * u.u_dsize,
|
||
NBPG * (USIZE + KSTAKSIZE), 2);
|
||
if (core_datasec (abfd) == NULL)
|
||
goto fail;
|
||
core_datasec (abfd)->vma = UDATASEG;
|
||
|
||
core_regsec (abfd) = make_bfd_asection (abfd, ".reg",
|
||
SEC_HAS_CONTENTS,
|
||
KSTAKSIZE * NBPG,
|
||
NBPG * USIZE, 2);
|
||
if (core_regsec (abfd) == NULL)
|
||
goto fail;
|
||
core_regsec (abfd)->vma = 0;
|
||
|
||
strncpy (core_command (abfd), u.u_comm, MAXCOMLEN + 1);
|
||
core_signal (abfd) = u.u_code;
|
||
return abfd->xvec;
|
||
|
||
fail:
|
||
bfd_release (abfd, abfd->tdata.any);
|
||
abfd->tdata.any = NULL;
|
||
bfd_section_list_clear (abfd);
|
||
return NULL;
|
||
}
|
||
|
||
static char *
|
||
hppabsd_core_core_file_failing_command (bfd *abfd)
|
||
{
|
||
return core_command (abfd);
|
||
}
|
||
|
||
static int
|
||
hppabsd_core_core_file_failing_signal (bfd *abfd)
|
||
{
|
||
return core_signal (abfd);
|
||
}
|
||
|
||
/* If somebody calls any byte-swapping routines, shoot them. */
|
||
static void
|
||
swap_abort (void)
|
||
{
|
||
/* This way doesn't require any declaration for ANSI to fuck up. */
|
||
abort ();
|
||
}
|
||
|
||
#define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
|
||
#define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
|
||
#define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
|
||
#define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
|
||
#define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
|
||
#define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
|
||
|
||
const bfd_target hppabsd_core_vec =
|
||
{
|
||
"hppabsd-core",
|
||
bfd_target_unknown_flavour,
|
||
BFD_ENDIAN_BIG, /* target byte order */
|
||
BFD_ENDIAN_BIG, /* target headers byte order */
|
||
(HAS_RELOC | EXEC_P | /* object flags */
|
||
HAS_LINENO | HAS_DEBUG |
|
||
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
|
||
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
||
0, /* symbol prefix */
|
||
' ', /* ar_pad_char */
|
||
16, /* ar_max_namelen */
|
||
NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */
|
||
NO_GET, NO_GETS, NO_PUT, /* 32 bit data */
|
||
NO_GET, NO_GETS, NO_PUT, /* 16 bit data */
|
||
NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */
|
||
NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */
|
||
NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */
|
||
|
||
{ /* bfd_check_format */
|
||
_bfd_dummy_target, /* unknown format */
|
||
_bfd_dummy_target, /* object file */
|
||
_bfd_dummy_target, /* archive */
|
||
hppabsd_core_core_file_p /* a core file */
|
||
},
|
||
{ /* bfd_set_format */
|
||
bfd_false, bfd_false,
|
||
bfd_false, bfd_false
|
||
},
|
||
{ /* bfd_write_contents */
|
||
bfd_false, bfd_false,
|
||
bfd_false, bfd_false
|
||
},
|
||
|
||
BFD_JUMP_TABLE_GENERIC (_bfd_generic),
|
||
BFD_JUMP_TABLE_COPY (_bfd_generic),
|
||
BFD_JUMP_TABLE_CORE (hppabsd_core),
|
||
BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
|
||
BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
|
||
BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
|
||
BFD_JUMP_TABLE_WRITE (_bfd_generic),
|
||
BFD_JUMP_TABLE_LINK (_bfd_nolink),
|
||
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
||
|
||
NULL,
|
||
|
||
NULL /* backend_data */
|
||
};
|
||
#endif
|