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binutils-gdb/bfd/aix386-core.c

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/* BFD back-end for AIX on PS/2 core files.
This was based on trad-core.c, which was written by John Gilmore of
Cygnus Support.
Copyright 1988, 89, 91, 92, 93, 94, 95, 96, 97, 98, 2000
Free Software Foundation, Inc.
Written by Minh Tran-Le <TRANLE@INTELLICORP.COM>.
Converted to back end form by Ian Lance Taylor <ian@cygnus.com>.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "coff/i386.h"
#include "coff/internal.h"
#include "libcoff.h"
#include <signal.h>
#if defined (_AIX) && defined (_I386)
#define NOCHECKS /* This is for coredump.h. */
#define _h_USER /* Avoid including user.h from coredump.h. */
#include <uinfo.h>
#include <sys/i386/coredump.h>
#endif /* _AIX && _I386 */
/* Maybe this could work on some other i386 but I have not tried it
* mtranle@paris - Tue Sep 24 12:49:35 1991
*/
#ifndef COR_MAGIC
# define COR_MAGIC "core"
#endif
/* Need this cast because ptr is really void *. */
#define core_hdr(bfd) \
(((bfd->tdata.trad_core_data))->hdr)
#define core_section(bfd,n) \
(((bfd)->tdata.trad_core_data)->sections[n])
#define core_regsec(bfd) \
(((bfd)->tdata.trad_core_data)->reg_section)
#define core_reg2sec(bfd) \
(((bfd)->tdata.trad_core_data)->reg2_section)
/* These are stored in the bfd's tdata. */
struct trad_core_struct {
struct corehdr *hdr; /* core file header */
asection *reg_section;
asection *reg2_section;
asection *sections[MAX_CORE_SEGS];
};
static void swap_abort PARAMS ((void));
static const bfd_target *
aix386_core_file_p (abfd)
bfd *abfd;
{
int i, n;
unsigned char longbuf[4]; /* Raw bytes of various header fields */
int core_size = sizeof (struct corehdr);
struct corehdr *core;
struct mergem {
struct trad_core_struct coredata;
struct corehdr internal_core;
} *mergem;
if (bfd_read ((PTR) longbuf, 1, sizeof (longbuf), abfd) != sizeof (longbuf))
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
return 0;
}
if (strncmp (longbuf, COR_MAGIC, 4))
return 0;
if (bfd_seek (abfd, 0L, false) < 0)
return 0;
mergem = (struct mergem *) bfd_zalloc (abfd, sizeof (struct mergem));
if (mergem == NULL)
return 0;
core = &mergem->internal_core;
if ((bfd_read ((PTR) core, 1, core_size, abfd)) != core_size)
{
if (bfd_get_error () != bfd_error_system_call)
bfd_set_error (bfd_error_wrong_format);
bfd_release (abfd, (char *) mergem);
return 0;
}
set_tdata (abfd, &mergem->coredata);
core_hdr (abfd) = core;
/* Create the sections. This is raunchy, but bfd_close wants to
reclaim them. */
core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
if (core_regsec (abfd) == NULL)
{
loser:
bfd_release (abfd, (char *) mergem);
return 0;
}
core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection));
if (core_reg2sec (abfd) == NULL)
{
loser1:
bfd_release (abfd, core_regsec (abfd));
goto loser;
}
for (i = 0, n = 0; (i < MAX_CORE_SEGS) && (core->cd_segs[i].cs_type); i++)
{
if (core->cd_segs[i].cs_offset == 0)
continue;
core_section (abfd, n) =
(asection *) bfd_zalloc (abfd, sizeof (asection));
if (core_section (abfd, n) == NULL)
{
int j;
if (n > 0)
{
for (j = 0; j < n; j++)
bfd_release (abfd, core_section (abfd, j));
}
bfd_release (abfd, (char *) mergem);
goto loser1;
}
switch (core->cd_segs[i].cs_type)
{
case COR_TYPE_DATA:
core_section (abfd, n)->name = ".data";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
SEC_HAS_CONTENTS);
break;
case COR_TYPE_STACK:
core_section (abfd, n)->name = ".stack";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
SEC_HAS_CONTENTS);
break;
case COR_TYPE_LIBDATA:
core_section (abfd, n)->name = ".libdata";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
case COR_TYPE_WRITE:
core_section (abfd, n)->name = ".writeable";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
case COR_TYPE_MSC:
core_section (abfd, n)->name = ".misc";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
default:
core_section (abfd, n)->name = ".unknown";
core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
break;
}
core_section (abfd, n)->_raw_size = core->cd_segs[i].cs_len;
core_section (abfd, n)->vma = core->cd_segs[i].cs_address;
core_section (abfd, n)->filepos = core->cd_segs[i].cs_offset;
core_section (abfd, n)->alignment_power = 2;
core_section (abfd, n)->next = NULL;
if (n > 0)
core_section (abfd, (n - 1))->next = core_section (abfd, n);
abfd->section_count = ++n;
}
core_regsec (abfd)->name = ".reg";
core_reg2sec (abfd)->name = ".reg2";
core_regsec (abfd)->flags = SEC_HAS_CONTENTS;
core_reg2sec (abfd)->flags = SEC_HAS_CONTENTS;
core_regsec (abfd)->_raw_size = sizeof (core->cd_regs);
core_reg2sec (abfd)->_raw_size = sizeof (core->cd_fpregs);
core_regsec (abfd)->vma = -1;
core_reg2sec (abfd)->vma = -1;
/* We'll access the regs afresh in the core file, like any section. */
core_regsec (abfd)->filepos =
(file_ptr) offsetof (struct corehdr, cd_regs[0]);
core_reg2sec (abfd)->filepos =
(file_ptr) offsetof (struct corehdr, cd_fpregs);
/* Add the 2 reg fake sections to abfd. */
abfd->section_count += 2;
abfd->sections = core_regsec (abfd);
core_regsec (abfd)->next = core_reg2sec (abfd);
core_reg2sec (abfd)->next = core_section (abfd, 0);
return abfd->xvec;
}
static char *
aix386_core_file_failing_command (abfd)
bfd *abfd;
{
return core_hdr (abfd)->cd_comm;
}
static int
aix386_core_file_failing_signal (abfd)
bfd *abfd;
{
return core_hdr (abfd)->cd_cursig;
}
static boolean
aix386_core_file_matches_executable_p (core_bfd, exec_bfd)
bfd *core_bfd;
bfd *exec_bfd;
{
/* FIXME: We have no way of telling at this point. */
return true;
}
/* If somebody calls any byte-swapping routines, shoot them. */
static void
swap_abort ()
{
/* This way doesn't require any declaration for ANSI to fuck up. */
abort ();
}
#define NO_GET ((PROTO(bfd_vma, (*), ( const bfd_byte *))) swap_abort )
#define NO_GETS ((PROTO(bfd_signed_vma, (*), (const bfd_byte *))) swap_abort )
#define NO_PUT ((PROTO(void, (*), (bfd_vma, bfd_byte *))) swap_abort )
const bfd_target aix386_core_vec = {
"aix386-core",
bfd_target_unknown_flavour,
BFD_ENDIAN_BIG, /* target byte order */
BFD_ENDIANG_BIG, /* target headers byte order */
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT),
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
0, /* leading underscore */
' ', /* ar_pad_char */
16, /* ar_max_namelen */
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT, /* data */
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT,
NO_GET, NO_GETS, NO_PUT, /* hdrs */
{_bfd_dummy_target, _bfd_dummy_target,
_bfd_dummy_target, aix386_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},
BFD_JUMP_TABLE_GENERIC (_bfd_generic),
BFD_JUMP_TABLE_COPY (_bfd_generic),
BFD_JUMP_TABLE_CORE (aix386),
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,
(PTR) 0
};
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