[binutils.git] / bfd / plugin.c

/* Plugin support for BFD.
   Copyright 2009
   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.  */

#include "config.h"
#include "bfd.h"

#if BFD_SUPPORTS_PLUGINS

#include <assert.h>
#include <dlfcn.h>
#include <stdarg.h>
#include "plugin-api.h"
#include "sysdep.h"
#include "plugin.h"
#include "libbfd.h"
#include "libiberty.h"
#include <dirent.h>

#define bfd_plugin_close_and_cleanup                  _bfd_generic_close_and_cleanup
#define bfd_plugin_bfd_free_cached_info               _bfd_generic_bfd_free_cached_info
#define bfd_plugin_new_section_hook                   _bfd_generic_new_section_hook
#define bfd_plugin_get_section_contents               _bfd_generic_get_section_contents
#define bfd_plugin_get_section_contents_in_window     _bfd_generic_get_section_contents_in_window
#define bfd_plugin_bfd_copy_private_header_data       _bfd_generic_bfd_copy_private_header_data
#define bfd_plugin_bfd_merge_private_bfd_data         _bfd_generic_bfd_merge_private_bfd_data
#define bfd_plugin_bfd_copy_private_header_data       _bfd_generic_bfd_copy_private_header_data
#define bfd_plugin_bfd_set_private_flags              _bfd_generic_bfd_set_private_flags
#define bfd_plugin_core_file_matches_executable_p     generic_core_file_matches_executable_p
#define bfd_plugin_bfd_is_local_label_name            _bfd_nosymbols_bfd_is_local_label_name
#define bfd_plugin_bfd_is_target_special_symbol       ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
#define bfd_plugin_get_lineno                         _bfd_nosymbols_get_lineno
#define bfd_plugin_find_nearest_line                  _bfd_nosymbols_find_nearest_line
#define bfd_plugin_find_inliner_info                  _bfd_nosymbols_find_inliner_info
#define bfd_plugin_bfd_make_debug_symbol              _bfd_nosymbols_bfd_make_debug_symbol
#define bfd_plugin_read_minisymbols                   _bfd_generic_read_minisymbols
#define bfd_plugin_minisymbol_to_symbol               _bfd_generic_minisymbol_to_symbol
#define bfd_plugin_set_arch_mach                      bfd_default_set_arch_mach
#define bfd_plugin_set_section_contents               _bfd_generic_set_section_contents
#define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
#define bfd_plugin_bfd_relax_section                  bfd_generic_relax_section
#define bfd_plugin_bfd_link_hash_table_create         _bfd_generic_link_hash_table_create
#define bfd_plugin_bfd_link_hash_table_free           _bfd_generic_link_hash_table_free
#define bfd_plugin_bfd_link_add_symbols               _bfd_generic_link_add_symbols
#define bfd_plugin_bfd_link_just_syms                 _bfd_generic_link_just_syms
#define bfd_plugin_bfd_final_link                     _bfd_generic_final_link
#define bfd_plugin_bfd_link_split_section             _bfd_generic_link_split_section
#define bfd_plugin_bfd_gc_sections                    bfd_generic_gc_sections
#define bfd_plugin_bfd_merge_sections                 bfd_generic_merge_sections
#define bfd_plugin_bfd_is_group_section               bfd_generic_is_group_section
#define bfd_plugin_bfd_discard_group                  bfd_generic_discard_group
#define bfd_plugin_section_already_linked             _bfd_generic_section_already_linked
#define bfd_plugin_bfd_define_common_symbol           bfd_generic_define_common_symbol
#define bfd_plugin_bfd_copy_link_hash_symbol_type     _bfd_generic_copy_link_hash_symbol_type

static enum ld_plugin_status
message (int level ATTRIBUTE_UNUSED,
	 const char * format, ...)
{
  va_list args;
  va_start (args, format);
  printf ("bfd plugin: ");
  vprintf (format, args);
  va_end (args);
  return LDPS_OK;
}

/* Register a claim-file handler. */
static ld_plugin_claim_file_handler claim_file;

static enum ld_plugin_status
register_claim_file (ld_plugin_claim_file_handler handler)
{
  claim_file = handler;
  return LDPS_OK;
}

static enum ld_plugin_status
add_symbols (void * handle,
	     int nsyms,
	     const struct ld_plugin_symbol * syms)
{
  bfd *abfd = handle;
  struct plugin_data_struct *plugin_data =
    bfd_alloc (abfd, sizeof (plugin_data_struct));;

  plugin_data->nsyms = nsyms;
  plugin_data->syms = syms;

  if (nsyms != 0)
    abfd->flags |= HAS_SYMS;

  abfd->tdata.plugin_data = plugin_data;
  return LDPS_OK;
}

static const char *plugin_program_name;

void
bfd_plugin_set_program_name (const char *program_name)
{
  plugin_program_name = program_name;
}

static int
try_load_plugin (const char *pname)
{
  static void *plugin_handle;
  int tv_size = 4;
  struct ld_plugin_tv tv[tv_size];
  int i;
  ld_plugin_onload onload;
  enum ld_plugin_status status;

  plugin_handle = dlopen (pname, RTLD_NOW);
  if (!plugin_handle)
    {
      (*_bfd_error_handler)("%s\n", dlerror ());
      return 0;
    }

  onload = dlsym (plugin_handle, "onload");
  if (!onload)
    goto err;

  i = 0;
  tv[i].tv_tag = LDPT_MESSAGE;
  tv[i].tv_u.tv_message = message;

  ++i;
  tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK;
  tv[i].tv_u.tv_register_claim_file = register_claim_file;

  ++i;
  tv[i].tv_tag = LDPT_ADD_SYMBOLS;
  tv[i].tv_u.tv_add_symbols = add_symbols;

  ++i;
  tv[i].tv_tag = LDPT_NULL;
  tv[i].tv_u.tv_val = 0;

  status = (*onload)(tv);

  if (status != LDPS_OK)
    goto err;

  if (!claim_file)
    goto err;

  return 1;

 err:
  plugin_handle = NULL;
  return 0;
}

static const char *plugin_name;

void
bfd_plugin_set_plugin (const char *p)
{
  plugin_name = p;
}

static int
load_plugin (void)
{
  char *plugin_dir;
  char *p;
  DIR *d;
  struct dirent *ent;
  int found = 0;

  if (plugin_name)
    return try_load_plugin (plugin_name);

  if (plugin_program_name == NULL)
    return 0;

  plugin_dir = concat (BINDIR, "/../lib/bfd-plugins", NULL);
  p = make_relative_prefix (plugin_program_name,
			    BINDIR,
			    plugin_dir);
  free (plugin_dir);
  plugin_dir = NULL;

  d = opendir (p);
  if (!d)
    goto out;

  while ((ent = readdir (d)))
    {
      char *full_name;
      struct stat s;

      full_name = concat (p, "/", ent->d_name, NULL);
      if (stat(full_name, &s) == 0 && S_ISREG (s.st_mode))
	found = try_load_plugin (full_name);
      free (full_name);
      if (found)
	break;
    }

 out:
  free (p);
  if (d)
    closedir (d);

  return found;
}


static const bfd_target *
bfd_plugin_object_p (bfd *abfd)
{
  int claimed = 0;
  int t = load_plugin ();
  struct ld_plugin_input_file file;
  if (!t)
    return NULL;

  file.name = abfd->filename;

  if (abfd->iostream)
    {
      file.fd = fileno ((FILE *) abfd->iostream);
      file.offset = 0;
      file.filesize = 0; /*FIXME*/
    }
  else
    {
      bfd *archive = abfd->my_archive;
      BFD_ASSERT (archive);
      file.fd = fileno ((FILE *) archive->iostream);
      file.offset = abfd->origin;
      file.filesize = arelt_size (abfd);

    }
  file.handle = abfd;
  claim_file (&file, &claimed);
  if (!claimed)
    return NULL;

  return abfd->xvec;
}

/* Copy any private info we understand from the input bfd
   to the output bfd.  */

static bfd_boolean
bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED,
				      bfd *obfd ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return TRUE;
}

/* Copy any private info we understand from the input section
   to the output section.  */

static bfd_boolean
bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
					  asection *isection ATTRIBUTE_UNUSED,
					  bfd *obfd ATTRIBUTE_UNUSED,
					  asection *osection ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return TRUE;
}

/* Copy any private info we understand from the input symbol
   to the output symbol.  */

static bfd_boolean
bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
					 asymbol *isymbol ATTRIBUTE_UNUSED,
					 bfd *obfd ATTRIBUTE_UNUSED,
					 asymbol *osymbol ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return TRUE;
}

static bfd_boolean
bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return TRUE;
}

static char *
bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return NULL;
}

static int
bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return 0;
}

static long
bfd_plugin_get_symtab_upper_bound (bfd *abfd)
{
  struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data;
  long nsyms = plugin_data->nsyms;

  BFD_ASSERT (nsyms >= 0);

  return ((nsyms + 1) * sizeof (asymbol *));
}

static flagword
convert_flags (const struct ld_plugin_symbol *sym)
{
 switch (sym->def)
   { 
   case LDPK_DEF:
   case LDPK_COMMON:
   case LDPK_UNDEF:
     return BSF_GLOBAL;

   case LDPK_WEAKUNDEF:
   case LDPK_WEAKDEF:
     return BSF_GLOBAL | BSF_WEAK;

   default:
     BFD_ASSERT (0);
     return 0;
   }
}

static long
bfd_plugin_canonicalize_symtab (bfd *abfd,
				asymbol **alocation)
{
  struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data;
  long nsyms = plugin_data->nsyms;
  const struct ld_plugin_symbol *syms = plugin_data->syms;
  static asection fake_section;
  static asection fake_common_section;
  int i;

  fake_section.name = ".text";
  fake_common_section.flags = SEC_IS_COMMON;

  for (i = 0; i < nsyms; i++)
    {
      asymbol *s = bfd_alloc (abfd, sizeof (asymbol)); 

      BFD_ASSERT (s);
      alocation[i] = s;

      s->the_bfd = abfd;
      s->name = syms[i].name;
      s->value = 0;
      s->flags = convert_flags (&syms[i]);
      switch (syms[i].def)
	{
	case LDPK_COMMON:
	  s->section = &fake_common_section;
	  break;
	case LDPK_UNDEF:
	case LDPK_WEAKUNDEF:
	  s->section = bfd_und_section_ptr;
	  break;
	case LDPK_DEF:
	case LDPK_WEAKDEF:
	  s->section = &fake_section;
	  break;
	default:
	  BFD_ASSERT (0);
	}

      s->udata.p = (void *) &syms[i];
    }

  return nsyms;
}

static void
bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED,
			 PTR afile ATTRIBUTE_UNUSED,
			 asymbol *symbol ATTRIBUTE_UNUSED,
			 bfd_print_symbol_type how ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
}

static void
bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
			    asymbol *symbol,
			    symbol_info *ret)
{
  bfd_symbol_info (symbol, ret);
}

/* Make an empty symbol. */

static asymbol *
bfd_plugin_make_empty_symbol (bfd *abfd)
{
  asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol));
  if (new_symbol == NULL)
    return new_symbol;
  new_symbol->the_bfd = abfd;
  return new_symbol;
}

static int
bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
			   struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return 0;
}

static bfd_boolean
bfd_plugin_mkobject (bfd *abfd ATTRIBUTE_UNUSED)
{
  BFD_ASSERT (0);
  return 0;
}

const bfd_target plugin_vec =
{
  "plugin",			/* Name.  */
  bfd_target_unknown_flavour,
  BFD_ENDIAN_LITTLE,		/* Target byte order.  */
  BFD_ENDIAN_LITTLE,		/* Target headers byte order.  */
  (HAS_RELOC | EXEC_P |		/* Object flags.  */
   HAS_LINENO | HAS_DEBUG |
   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED),
  (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
   | SEC_ALLOC | SEC_LOAD | SEC_RELOC),	/* Section flags.  */
  0,				/* symbol_leading_char.  */
  '/',				/* ar_pad_char.  */
  15,				/* ar_max_namelen.  */

  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
  bfd_getl32, bfd_getl_signed_32, bfd_putl32,
  bfd_getl16, bfd_getl_signed_16, bfd_putl16,	/* data */
  bfd_getl64, bfd_getl_signed_64, bfd_putl64,
  bfd_getl32, bfd_getl_signed_32, bfd_putl32,
  bfd_getl16, bfd_getl_signed_16, bfd_putl16,	/* hdrs */

  {				/* bfd_check_format.  */
    _bfd_dummy_target,
    bfd_plugin_object_p,
    bfd_generic_archive_p,
    _bfd_dummy_target
  },
  {				/* bfd_set_format.  */
    bfd_false,
    bfd_plugin_mkobject,
    _bfd_generic_mkarchive,
    bfd_false,
  },
  {				/* bfd_write_contents.  */
    bfd_false,
    bfd_false,
    _bfd_write_archive_contents,
    bfd_false,
  },

  BFD_JUMP_TABLE_GENERIC (bfd_plugin),
  BFD_JUMP_TABLE_COPY (bfd_plugin),
  BFD_JUMP_TABLE_CORE (bfd_plugin),
  BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
  BFD_JUMP_TABLE_SYMBOLS (bfd_plugin),
  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
  BFD_JUMP_TABLE_WRITE (bfd_plugin),
  BFD_JUMP_TABLE_LINK (bfd_plugin),
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),

  NULL,

  NULL  			/* backend_data.  */
};
#endif /* BFD_SUPPORTS_PLUGIN */
Commit	Line	Data
ce3c775b NC	1	/* Plugin support for BFD.
	2	Copyright 2009
	3	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	#include "config.h"
98950613 AM	23	#include "bfd.h"
	24
	25	#if BFD_SUPPORTS_PLUGINS
	26
ce3c775b NC	27	#include <assert.h>
	28	#include <dlfcn.h>
	29	#include <stdarg.h>
	30	#include "plugin-api.h"
	31	#include "sysdep.h"
	32	#include "plugin.h"
	33	#include "libbfd.h"
	34	#include "libiberty.h"
	35	#include <dirent.h>
	36
	37	#define bfd_plugin_close_and_cleanup _bfd_generic_close_and_cleanup
	38	#define bfd_plugin_bfd_free_cached_info _bfd_generic_bfd_free_cached_info
	39	#define bfd_plugin_new_section_hook _bfd_generic_new_section_hook
	40	#define bfd_plugin_get_section_contents _bfd_generic_get_section_contents
	41	#define bfd_plugin_get_section_contents_in_window _bfd_generic_get_section_contents_in_window
	42	#define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
	43	#define bfd_plugin_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data
	44	#define bfd_plugin_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data
	45	#define bfd_plugin_bfd_set_private_flags _bfd_generic_bfd_set_private_flags
	46	#define bfd_plugin_core_file_matches_executable_p generic_core_file_matches_executable_p
	47	#define bfd_plugin_bfd_is_local_label_name _bfd_nosymbols_bfd_is_local_label_name
	48	#define bfd_plugin_bfd_is_target_special_symbol ((bfd_boolean () (bfd , asymbol *)) bfd_false)
	49	#define bfd_plugin_get_lineno _bfd_nosymbols_get_lineno
	50	#define bfd_plugin_find_nearest_line _bfd_nosymbols_find_nearest_line
	51	#define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info
	52	#define bfd_plugin_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
	53	#define bfd_plugin_read_minisymbols _bfd_generic_read_minisymbols
	54	#define bfd_plugin_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol
	55	#define bfd_plugin_set_arch_mach bfd_default_set_arch_mach
	56	#define bfd_plugin_set_section_contents _bfd_generic_set_section_contents
	57	#define bfd_plugin_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
	58	#define bfd_plugin_bfd_relax_section bfd_generic_relax_section
	59	#define bfd_plugin_bfd_link_hash_table_create _bfd_generic_link_hash_table_create
	60	#define bfd_plugin_bfd_link_hash_table_free _bfd_generic_link_hash_table_free
	61	#define bfd_plugin_bfd_link_add_symbols _bfd_generic_link_add_symbols
	62	#define bfd_plugin_bfd_link_just_syms _bfd_generic_link_just_syms
	63	#define bfd_plugin_bfd_final_link _bfd_generic_final_link
	64	#define bfd_plugin_bfd_link_split_section _bfd_generic_link_split_section
	65	#define bfd_plugin_bfd_gc_sections bfd_generic_gc_sections
	66	#define bfd_plugin_bfd_merge_sections bfd_generic_merge_sections
	67	#define bfd_plugin_bfd_is_group_section bfd_generic_is_group_section
	68	#define bfd_plugin_bfd_discard_group bfd_generic_discard_group
	69	#define bfd_plugin_section_already_linked _bfd_generic_section_already_linked
	70	#define bfd_plugin_bfd_define_common_symbol bfd_generic_define_common_symbol
69a630b5	71	#define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type
ce3c775b NC	72
	73	static enum ld_plugin_status
	74	message (int level ATTRIBUTE_UNUSED,
	75	const char * format, ...)
	76	{
	77	va_list args;
	78	va_start (args, format);
	79	printf ("bfd plugin: ");
	80	vprintf (format, args);
	81	va_end (args);
	82	return LDPS_OK;
	83	}
	84
	85	/* Register a claim-file handler. */
	86	static ld_plugin_claim_file_handler claim_file;
	87
	88	static enum ld_plugin_status
	89	register_claim_file (ld_plugin_claim_file_handler handler)
	90	{
	91	claim_file = handler;
	92	return LDPS_OK;
	93	}
	94
	95	static enum ld_plugin_status
	96	add_symbols (void * handle,
	97	int nsyms,
	98	const struct ld_plugin_symbol * syms)
	99	{
	100	bfd *abfd = handle;
	101	struct plugin_data_struct *plugin_data =
	102	bfd_alloc (abfd, sizeof (plugin_data_struct));;
	103
	104	plugin_data->nsyms = nsyms;
	105	plugin_data->syms = syms;
	106
	107	if (nsyms != 0)
	108	abfd->flags \|= HAS_SYMS;
	109
	110	abfd->tdata.plugin_data = plugin_data;
	111	return LDPS_OK;
	112	}
	113
fc579192 NC	114	static const char *plugin_program_name;
	115
	116	void
	117	bfd_plugin_set_program_name (const char *program_name)
	118	{
	119	plugin_program_name = program_name;
	120	}
ce3c775b NC	121
	122	static int
	123	try_load_plugin (const char *pname)
	124	{
	125	static void *plugin_handle;
	126	int tv_size = 4;
	127	struct ld_plugin_tv tv[tv_size];
	128	int i;
	129	ld_plugin_onload onload;
	130	enum ld_plugin_status status;
	131
	132	plugin_handle = dlopen (pname, RTLD_NOW);
	133	if (!plugin_handle)
	134	{
	135	(*_bfd_error_handler)("%s\n", dlerror ());
	136	return 0;
	137	}
	138
	139	onload = dlsym (plugin_handle, "onload");
	140	if (!onload)
	141	goto err;
	142
	143	i = 0;
	144	tv[i].tv_tag = LDPT_MESSAGE;
	145	tv[i].tv_u.tv_message = message;
	146
	147	++i;
	148	tv[i].tv_tag = LDPT_REGISTER_CLAIM_FILE_HOOK;
	149	tv[i].tv_u.tv_register_claim_file = register_claim_file;
	150
	151	++i;
	152	tv[i].tv_tag = LDPT_ADD_SYMBOLS;
	153	tv[i].tv_u.tv_add_symbols = add_symbols;
	154
	155	++i;
	156	tv[i].tv_tag = LDPT_NULL;
	157	tv[i].tv_u.tv_val = 0;
	158
	159	status = (*onload)(tv);
	160
	161	if (status != LDPS_OK)
	162	goto err;
	163
	164	if (!claim_file)
	165	goto err;
	166
	167	return 1;
	168
	169	err:
	170	plugin_handle = NULL;
	171	return 0;
	172	}
	173
	174	static const char *plugin_name;
	175
	176	void
	177	bfd_plugin_set_plugin (const char *p)
	178	{
	179	plugin_name = p;
	180	}
	181
	182	static int
	183	load_plugin (void)
	184	{
185	char *plugin_dir;
186	char *p;
187	DIR *d;
188	struct dirent *ent;
189	int found = 0;
190
191	if (plugin_name)
192	return try_load_plugin (plugin_name);
193
fc579192	194	if (plugin_program_name == NULL)
ce3c775b NC	195	return 0;
	196
	197	plugin_dir = concat (BINDIR, "/../lib/bfd-plugins", NULL);
fc579192	198	p = make_relative_prefix (plugin_program_name,
ce3c775b NC	199	BINDIR,
	200	plugin_dir);
	201	free (plugin_dir);
	202	plugin_dir = NULL;
	203
	204	d = opendir (p);
	205	if (!d)
	206	goto out;
	207
	208	while ((ent = readdir (d)))
	209	{
	210	char *full_name;
c41ba836	211	struct stat s;
ce3c775b NC	212
ce3c775b NC	213	full_name = concat (p, "/", ent->d_name, NULL);
c41ba836 DK	214	if (stat(full_name, &s) == 0 && S_ISREG (s.st_mode))
c41ba836 DK	215	found = try_load_plugin (full_name);
ce3c775b NC	216	free (full_name);
	217	if (found)
	218	break;
	219	}
	220
	221	out:
	222	free (p);
	223	if (d)
	224	closedir (d);
	225
	226	return found;
	227	}
	228
	229
	230	static const bfd_target *
	231	bfd_plugin_object_p (bfd *abfd)
	232	{
	233	int claimed = 0;
	234	int t = load_plugin ();
	235	struct ld_plugin_input_file file;
	236	if (!t)
	237	return NULL;
	238
	239	file.name = abfd->filename;
	240
	241	if (abfd->iostream)
	242	{
f4bacdc0	243	file.fd = fileno ((FILE *) abfd->iostream);
ce3c775b NC	244	file.offset = 0;
	245	file.filesize = 0; /FIXME/
	246	}
	247	else
	248	{
	249	bfd *archive = abfd->my_archive;
	250	BFD_ASSERT (archive);
f4bacdc0	251	file.fd = fileno ((FILE *) archive->iostream);
ce3c775b NC	252	file.offset = abfd->origin;
	253	file.filesize = arelt_size (abfd);
	254
	255	}
	256	file.handle = abfd;
	257	claim_file (&file, &claimed);
	258	if (!claimed)
	259	return NULL;
	260
	261	return abfd->xvec;
	262	}
	263
	264	/* Copy any private info we understand from the input bfd
	265	to the output bfd. */
	266
	267	static bfd_boolean
	268	bfd_plugin_bfd_copy_private_bfd_data (bfd *ibfd ATTRIBUTE_UNUSED,
	269	bfd *obfd ATTRIBUTE_UNUSED)
	270	{
	271	BFD_ASSERT (0);
	272	return TRUE;
	273	}
	274
	275	/* Copy any private info we understand from the input section
	276	to the output section. */
	277
	278	static bfd_boolean
	279	bfd_plugin_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
	280	asection *isection ATTRIBUTE_UNUSED,
	281	bfd *obfd ATTRIBUTE_UNUSED,
	282	asection *osection ATTRIBUTE_UNUSED)
	283	{
	284	BFD_ASSERT (0);
	285	return TRUE;
	286	}
	287
	288	/* Copy any private info we understand from the input symbol
	289	to the output symbol. */
	290
	291	static bfd_boolean
	292	bfd_plugin_bfd_copy_private_symbol_data (bfd *ibfd ATTRIBUTE_UNUSED,
	293	asymbol *isymbol ATTRIBUTE_UNUSED,
	294	bfd *obfd ATTRIBUTE_UNUSED,
	295	asymbol *osymbol ATTRIBUTE_UNUSED)
	296	{
	297	BFD_ASSERT (0);
	298	return TRUE;
	299	}
	300
	301	static bfd_boolean
	302	bfd_plugin_bfd_print_private_bfd_data (bfd *abfd ATTRIBUTE_UNUSED, PTR ptr ATTRIBUTE_UNUSED)
	303	{
	304	BFD_ASSERT (0);
	305	return TRUE;
	306	}
	307
	308	static char *
	309	bfd_plugin_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED)
	310	{
	311	BFD_ASSERT (0);
	312	return NULL;
	313	}
	314
	315	static int
316	bfd_plugin_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
317	{
318	BFD_ASSERT (0);
319	return 0;
320	}
321
322	static long
323	bfd_plugin_get_symtab_upper_bound (bfd *abfd)
324	{
325	struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data;
326	long nsyms = plugin_data->nsyms;
327
328	BFD_ASSERT (nsyms >= 0);
329
330	return ((nsyms + 1) * sizeof (asymbol *));
331	}
332
333	static flagword
334	convert_flags (const struct ld_plugin_symbol *sym)
335	{
336	switch (sym->def)
337	{
338	case LDPK_DEF:
339	case LDPK_COMMON:
340	case LDPK_UNDEF:
341	return BSF_GLOBAL;
342
343	case LDPK_WEAKUNDEF:
344	case LDPK_WEAKDEF:
345	return BSF_GLOBAL \| BSF_WEAK;
346
347	default:
348	BFD_ASSERT (0);
349	return 0;
350	}
351	}
352
353	static long
354	bfd_plugin_canonicalize_symtab (bfd *abfd,
355	asymbol **alocation)
356	{
357	struct plugin_data_struct *plugin_data = abfd->tdata.plugin_data;
358	long nsyms = plugin_data->nsyms;
359	const struct ld_plugin_symbol *syms = plugin_data->syms;
360	static asection fake_section;
361	static asection fake_common_section;
362	int i;
363
364	fake_section.name = ".text";
365	fake_common_section.flags = SEC_IS_COMMON;
366
367	for (i = 0; i < nsyms; i++)
368	{
369	asymbol *s = bfd_alloc (abfd, sizeof (asymbol));
370
371	BFD_ASSERT (s);
372	alocation[i] = s;
373
374	s->the_bfd = abfd;
375	s->name = syms[i].name;
376	s->value = 0;
377	s->flags = convert_flags (&syms[i]);
378	switch (syms[i].def)
379	{
380	case LDPK_COMMON:
381	s->section = &fake_common_section;
382	break;
383	case LDPK_UNDEF:
384	case LDPK_WEAKUNDEF:
385	s->section = bfd_und_section_ptr;
386	break;
387	case LDPK_DEF:
388	case LDPK_WEAKDEF:
389	s->section = &fake_section;
390	break;
391	default:
392	BFD_ASSERT (0);
393	}
394
395	s->udata.p = (void *) &syms[i];
396	}
397
398	return nsyms;
399	}
400
401	static void
402	bfd_plugin_print_symbol (bfd *abfd ATTRIBUTE_UNUSED,
403	PTR afile ATTRIBUTE_UNUSED,
404	asymbol *symbol ATTRIBUTE_UNUSED,
405	bfd_print_symbol_type how ATTRIBUTE_UNUSED)
406	{
407	BFD_ASSERT (0);
408	}
409
410	static void
411	bfd_plugin_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
412	asymbol *symbol,
413	symbol_info *ret)
414	{
415	bfd_symbol_info (symbol, ret);
416	}
417
418	/* Make an empty symbol. */
419
420	static asymbol *
421	bfd_plugin_make_empty_symbol (bfd *abfd)
422	{
d3ce72d0 NC	423	asymbol *new_symbol = bfd_zalloc (abfd, sizeof (asymbol));
	424	if (new_symbol == NULL)
	425	return new_symbol;
	426	new_symbol->the_bfd = abfd;
	427	return new_symbol;
ce3c775b NC	428	}
	429
	430	static int
	431	bfd_plugin_sizeof_headers (bfd *a ATTRIBUTE_UNUSED,
	432	struct bfd_link_info *info ATTRIBUTE_UNUSED)
	433	{
	434	BFD_ASSERT (0);
	435	return 0;
	436	}
	437
	438	static bfd_boolean
	439	bfd_plugin_mkobject (bfd *abfd ATTRIBUTE_UNUSED)
	440	{
	441	BFD_ASSERT (0);
	442	return 0;
	443	}
	444
	445	const bfd_target plugin_vec =
	446	{
	447	"plugin", /* Name. */
	448	bfd_target_unknown_flavour,
	449	BFD_ENDIAN_LITTLE, /* Target byte order. */
	450	BFD_ENDIAN_LITTLE, /* Target headers byte order. */
	451	(HAS_RELOC \| EXEC_P \| /* Object flags. */
	452	HAS_LINENO \| HAS_DEBUG \|
	453	HAS_SYMS \| HAS_LOCALS \| DYNAMIC \| WP_TEXT \| D_PAGED),
	454	(SEC_CODE \| SEC_DATA \| SEC_ROM \| SEC_HAS_CONTENTS
	455	\| SEC_ALLOC \| SEC_LOAD \| SEC_RELOC), /* Section flags. */
	456	0, /* symbol_leading_char. */
	457	'/', /* ar_pad_char. */
	458	15, /* ar_max_namelen. */
	459
	460	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	461	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	462	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
	463	bfd_getl64, bfd_getl_signed_64, bfd_putl64,
	464	bfd_getl32, bfd_getl_signed_32, bfd_putl32,
	465	bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
	466
	467	{ /* bfd_check_format. */
	468	_bfd_dummy_target,
	469	bfd_plugin_object_p,
	470	bfd_generic_archive_p,
	471	_bfd_dummy_target
	472	},
	473	{ /* bfd_set_format. */
	474	bfd_false,
	475	bfd_plugin_mkobject,
	476	_bfd_generic_mkarchive,
	477	bfd_false,
	478	},
	479	{ /* bfd_write_contents. */
	480	bfd_false,
	481	bfd_false,
	482	_bfd_write_archive_contents,
	483	bfd_false,
	484	},
	485
	486	BFD_JUMP_TABLE_GENERIC (bfd_plugin),
	487	BFD_JUMP_TABLE_COPY (bfd_plugin),
	488	BFD_JUMP_TABLE_CORE (bfd_plugin),
	489	BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
	490	BFD_JUMP_TABLE_SYMBOLS (bfd_plugin),
	491	BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
492	BFD_JUMP_TABLE_WRITE (bfd_plugin),
493	BFD_JUMP_TABLE_LINK (bfd_plugin),
494	BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
495
496	NULL,
497
498	NULL /* backend_data. */
499	};
98950613	500	#endif /* BFD_SUPPORTS_PLUGIN */