[deliverable/binutils-gdb.git] / bfd / aix386-core.c

/* 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, 1989, 1991, 1992, 1993, 1994, 1996, 1998, 1999, 2000,
   2001
   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 */
  bfd_size_type core_size = sizeof (struct corehdr);
  bfd_size_type amt;
  struct corehdr *core;
  struct mergem {
    struct trad_core_struct coredata;
    struct corehdr internal_core;
  } *mergem;

  amt = sizeof (longbuf);
  if (bfd_bread ((PTR) longbuf, amt, abfd) != amt)
    {
      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, (file_ptr) 0, 0) != 0)
    return 0;

  amt = sizeof (struct mergem);
  mergem = (struct mergem *) bfd_zalloc (abfd, amt);
  if (mergem == NULL)
    return 0;

  core = &mergem->internal_core;

  if ((bfd_bread ((PTR) core, core_size, abfd)) != core_size)
    {
      if (bfd_get_error () != bfd_error_system_call)
	bfd_set_error (bfd_error_wrong_format);
    loser:
      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.  */
  amt = sizeof (asection);
  core_regsec (abfd) = (asection *) bfd_zalloc (abfd, amt);
  if (core_regsec (abfd) == NULL)
    goto loser;

  core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, amt);
  if (core_reg2sec (abfd) == NULL)
    /* bfd_release frees everything allocated after it's arg.  */
    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, amt);
      if (core_section (abfd, n) == NULL)
	goto loser;

      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 = (bfd_vma) -1;
  core_reg2sec (abfd)->vma = (bfd_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	((bfd_vma (*) PARAMS ((const bfd_byte *))) swap_abort)
#define NO_GETS ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort)
#define	NO_PUT	((void (*) PARAMS ((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_ENDIAN_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
};
Commit	Line	Data
252b5132 RH	1	/* BFD back-end for AIX on PS/2 core files.
	2	This was based on trad-core.c, which was written by John Gilmore of
	3	Cygnus Support.
dc810e39 AM	4	Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1996, 1998, 1999, 2000,
dc810e39 AM	5	2001
252b5132 RH	6	Free Software Foundation, Inc.
	7	Written by Minh Tran-Le <TRANLE@INTELLICORP.COM>.
	8	Converted to back end form by Ian Lance Taylor <ian@cygnus.com>.
	9
	10	This file is part of BFD, the Binary File Descriptor library.
	11
	12	This program is free software; you can redistribute it and/or modify
	13	it under the terms of the GNU General Public License as published by
	14	the Free Software Foundation; either version 2 of the License, or
	15	(at your option) any later version.
	16
	17	This program is distributed in the hope that it will be useful,
	18	but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	GNU General Public License for more details.
	21
	22	You should have received a copy of the GNU General Public License
	23	along with this program; if not, write to the Free Software
	24	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	25
	26	#include "bfd.h"
	27	#include "sysdep.h"
	28	#include "libbfd.h"
	29	#include "coff/i386.h"
	30	#include "coff/internal.h"
	31	#include "libcoff.h"
	32
	33	#include <signal.h>
	34
	35	#if defined (_AIX) && defined (_I386)
e9e41bd9 KH	36	#define NOCHECKS /* This is for coredump.h. */
e9e41bd9 KH	37	#define _h_USER /* Avoid including user.h from coredump.h. */
252b5132 RH	38	#include <uinfo.h>
	39	#include <sys/i386/coredump.h>
	40	#endif /* _AIX && _I386 */
	41
e9e41bd9	42	/* Maybe this could work on some other i386 but I have not tried it
252b5132 RH	43	* mtranle@paris - Tue Sep 24 12:49:35 1991
	44	*/
	45
	46	#ifndef COR_MAGIC
	47	# define COR_MAGIC "core"
	48	#endif
	49
e9e41bd9	50	/* Need this cast because ptr is really void . /
252b5132 RH	51	#define core_hdr(bfd) \
	52	(((bfd->tdata.trad_core_data))->hdr)
	53	#define core_section(bfd,n) \
	54	(((bfd)->tdata.trad_core_data)->sections[n])
	55	#define core_regsec(bfd) \
	56	(((bfd)->tdata.trad_core_data)->reg_section)
	57	#define core_reg2sec(bfd) \
	58	(((bfd)->tdata.trad_core_data)->reg2_section)
	59
e9e41bd9	60	/* These are stored in the bfd's tdata. */
252b5132 RH	61	struct trad_core_struct {
	62	struct corehdr hdr; / core file header */
	63	asection *reg_section;
	64	asection *reg2_section;
	65	asection *sections[MAX_CORE_SEGS];
	66	};
	67
	68	static void swap_abort PARAMS ((void));
	69
	70	static const bfd_target *
	71	aix386_core_file_p (abfd)
	72	bfd *abfd;
	73	{
e9e41bd9	74	int i, n;
252b5132	75	unsigned char longbuf[4]; /* Raw bytes of various header fields */
dc810e39 AM	76	bfd_size_type core_size = sizeof (struct corehdr);
dc810e39 AM	77	bfd_size_type amt;
252b5132 RH	78	struct corehdr *core;
	79	struct mergem {
	80	struct trad_core_struct coredata;
	81	struct corehdr internal_core;
	82	} *mergem;
	83
dc810e39 AM	84	amt = sizeof (longbuf);
dc810e39 AM	85	if (bfd_bread ((PTR) longbuf, amt, abfd) != amt)
252b5132 RH	86	{
	87	if (bfd_get_error () != bfd_error_system_call)
	88	bfd_set_error (bfd_error_wrong_format);
	89	return 0;
	90	}
	91
e9e41bd9 KH	92	if (strncmp (longbuf, COR_MAGIC, 4))
e9e41bd9 KH	93	return 0;
252b5132	94
dc810e39	95	if (bfd_seek (abfd, (file_ptr) 0, 0) != 0)
e9e41bd9	96	return 0;
252b5132	97
dc810e39 AM	98	amt = sizeof (struct mergem);
dc810e39 AM	99	mergem = (struct mergem *) bfd_zalloc (abfd, amt);
252b5132 RH	100	if (mergem == NULL)
	101	return 0;
	102
	103	core = &mergem->internal_core;
	104
dc810e39	105	if ((bfd_bread ((PTR) core, core_size, abfd)) != core_size)
252b5132 RH	106	{
	107	if (bfd_get_error () != bfd_error_system_call)
	108	bfd_set_error (bfd_error_wrong_format);
dc810e39	109	loser:
e9e41bd9	110	bfd_release (abfd, (char *) mergem);
252b5132 RH	111	return 0;
	112	}
	113
	114	set_tdata (abfd, &mergem->coredata);
	115	core_hdr (abfd) = core;
	116
e9e41bd9 KH	117	/* Create the sections. This is raunchy, but bfd_close wants to
e9e41bd9 KH	118	reclaim them. */
dc810e39 AM	119	amt = sizeof (asection);
dc810e39 AM	120	core_regsec (abfd) = (asection *) bfd_zalloc (abfd, amt);
252b5132	121	if (core_regsec (abfd) == NULL)
dc810e39 AM	122	goto loser;
	123
	124	core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, amt);
252b5132	125	if (core_reg2sec (abfd) == NULL)
dc810e39 AM	126	/* bfd_release frees everything allocated after it's arg. */
dc810e39 AM	127	goto loser;
252b5132	128
e9e41bd9	129	for (i = 0, n = 0; (i < MAX_CORE_SEGS) && (core->cd_segs[i].cs_type); i++)
252b5132 RH	130	{
	131	if (core->cd_segs[i].cs_offset == 0)
	132	continue;
dc810e39	133	core_section (abfd, n) = (asection *) bfd_zalloc (abfd, amt);
e9e41bd9	134	if (core_section (abfd, n) == NULL)
dc810e39	135	goto loser;
252b5132 RH	136
	137	switch (core->cd_segs[i].cs_type)
	138	{
	139	case COR_TYPE_DATA:
	140	core_section (abfd, n)->name = ".data";
	141	core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
	142	SEC_HAS_CONTENTS);
	143	break;
	144	case COR_TYPE_STACK:
	145	core_section (abfd, n)->name = ".stack";
	146	core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD +
	147	SEC_HAS_CONTENTS);
	148	break;
	149	case COR_TYPE_LIBDATA:
	150	core_section (abfd, n)->name = ".libdata";
	151	core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
	152	break;
	153	case COR_TYPE_WRITE:
	154	core_section (abfd, n)->name = ".writeable";
	155	core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
	156	break;
	157	case COR_TYPE_MSC:
	158	core_section (abfd, n)->name = ".misc";
	159	core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
	160	break;
	161	default:
	162	core_section (abfd, n)->name = ".unknown";
	163	core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS);
	164	break;
	165	}
	166	core_section (abfd, n)->_raw_size = core->cd_segs[i].cs_len;
	167	core_section (abfd, n)->vma = core->cd_segs[i].cs_address;
	168	core_section (abfd, n)->filepos = core->cd_segs[i].cs_offset;
	169	core_section (abfd, n)->alignment_power = 2;
	170	core_section (abfd, n)->next = NULL;
	171	if (n > 0)
e9e41bd9	172	core_section (abfd, (n - 1))->next = core_section (abfd, n);
252b5132 RH	173
	174	abfd->section_count = ++n;
	175	}
	176
	177	core_regsec (abfd)->name = ".reg";
	178	core_reg2sec (abfd)->name = ".reg2";
	179
	180	core_regsec (abfd)->flags = SEC_HAS_CONTENTS;
	181	core_reg2sec (abfd)->flags = SEC_HAS_CONTENTS;
	182
beb0d161 KH	183	core_regsec (abfd)->_raw_size = sizeof (core->cd_regs);
beb0d161 KH	184	core_reg2sec (abfd)->_raw_size = sizeof (core->cd_fpregs);
252b5132	185
dc810e39 AM	186	core_regsec (abfd)->vma = (bfd_vma) -1;
dc810e39 AM	187	core_reg2sec (abfd)->vma = (bfd_vma) -1;
252b5132	188
e9e41bd9 KH	189	/* We'll access the regs afresh in the core file, like any section. */
	190	core_regsec (abfd)->filepos =
	191	(file_ptr) offsetof (struct corehdr, cd_regs[0]);
	192	core_reg2sec (abfd)->filepos =
	193	(file_ptr) offsetof (struct corehdr, cd_fpregs);
252b5132	194
e9e41bd9	195	/* Add the 2 reg fake sections to abfd. */
252b5132 RH	196	abfd->section_count += 2;
	197	abfd->sections = core_regsec (abfd);
	198	core_regsec (abfd)->next = core_reg2sec (abfd);
	199	core_reg2sec (abfd)->next = core_section (abfd, 0);
	200
	201	return abfd->xvec;
	202	}
	203
	204	static char *
	205	aix386_core_file_failing_command (abfd)
	206	bfd *abfd;
	207	{
	208	return core_hdr (abfd)->cd_comm;
	209	}
	210
	211	static int
	212	aix386_core_file_failing_signal (abfd)
	213	bfd *abfd;
	214	{
	215	return core_hdr (abfd)->cd_cursig;
	216	}
	217
	218	static boolean
	219	aix386_core_file_matches_executable_p (core_bfd, exec_bfd)
	220	bfd *core_bfd;
	221	bfd *exec_bfd;
	222	{
e9e41bd9 KH	223	/* FIXME: We have no way of telling at this point. */
e9e41bd9 KH	224	return true;
252b5132 RH	225	}
	226
	227	/* If somebody calls any byte-swapping routines, shoot them. */
e9e41bd9	228
252b5132	229	static void
beb0d161	230	swap_abort ()
252b5132	231	{
e9e41bd9 KH	232	/* This way doesn't require any declaration for ANSI to fuck up. */
e9e41bd9 KH	233	abort ();
252b5132	234	}
e9e41bd9	235
dc810e39 AM	236	#define NO_GET ((bfd_vma () PARAMS ((const bfd_byte ))) swap_abort)
	237	#define NO_GETS ((bfd_signed_vma () PARAMS ((const bfd_byte ))) swap_abort)
	238	#define NO_PUT ((void () PARAMS ((bfd_vma, bfd_byte ))) swap_abort)
252b5132	239
e9e41bd9 KH	240	const bfd_target aix386_core_vec = {
	241	"aix386-core",
	242	bfd_target_unknown_flavour,
	243	BFD_ENDIAN_BIG, /* target byte order */
dc810e39	244	BFD_ENDIAN_BIG, /* target headers byte order */
252b5132 RH	245	(HAS_RELOC \| EXEC_P \| /* object flags */
	246	HAS_LINENO \| HAS_DEBUG \|
	247	HAS_SYMS \| HAS_LOCALS \| WP_TEXT),
	248
	249	(SEC_HAS_CONTENTS \| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* section flags */
e9e41bd9 KH	250	0, /* leading underscore */
	251	' ', /* ar_pad_char */
	252	16, /* ar_max_namelen */
	253	NO_GET, NO_GETS, NO_PUT,
	254	NO_GET, NO_GETS, NO_PUT,
	255	NO_GET, NO_GETS, NO_PUT, /* data */
	256	NO_GET, NO_GETS, NO_PUT,
	257	NO_GET, NO_GETS, NO_PUT,
	258	NO_GET, NO_GETS, NO_PUT, /* hdrs */
	259
	260	{_bfd_dummy_target, _bfd_dummy_target,
	261	_bfd_dummy_target, aix386_core_file_p},
	262	{bfd_false, bfd_false, /* bfd_create_object */
	263	bfd_false, bfd_false},
	264	{bfd_false, bfd_false, /* bfd_write_contents */
	265	bfd_false, bfd_false},
	266
	267	BFD_JUMP_TABLE_GENERIC (_bfd_generic),
	268	BFD_JUMP_TABLE_COPY (_bfd_generic),
	269	BFD_JUMP_TABLE_CORE (aix386),
	270	BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
	271	BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
	272	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
	273	BFD_JUMP_TABLE_WRITE (_bfd_generic),
	274	BFD_JUMP_TABLE_LINK (_bfd_nolink),
	275	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
	276
	277	NULL,
	278
	279	(PTR) 0
252b5132	280	};