[deliverable/binutils-gdb.git] / gdb / solib-target.c

/* Definitions for targets which report shared library events.

   Copyright (C) 2007
   Free Software Foundation, Inc.

   This file is part of GDB.

   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, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "objfiles.h"
#include "solist.h"
#include "symtab.h"
#include "symfile.h"
#include "target.h"
#include "vec.h"

#include "gdb_string.h"

DEF_VEC_O(CORE_ADDR);

/* Private data for each loaded library.  */
struct lm_info
{
  /* The library's name.  The name is normally kept in the struct
     so_list; it is only here during XML parsing.  */
  char *name;

  /* The base addresses for each independently relocatable segment of
     this shared library.  */
  VEC(CORE_ADDR) *segment_bases;

  /* The cached offsets for each section of this shared library,
     determined from SEGMENT_BASES.  */
  struct section_offsets *offsets;
};

typedef struct lm_info *lm_info_p;
DEF_VEC_P(lm_info_p);

#if !defined(HAVE_LIBEXPAT)

static VEC(lm_info_p)
solib_target_parse_libraries (const char *library)
{
  static int have_warned;

  if (!have_warned)
    {
      have_warned = 1;
      warning (_("Can not parse XML library list; XML support was disabled "
		 "at compile time"));
    }

  return NULL;
}

#else /* HAVE_LIBEXPAT */

#include "xml-support.h"

/* Handle the start of a <segment> element.  */

static void
library_list_start_segment (struct gdb_xml_parser *parser,
			    const struct gdb_xml_element *element,
			    void *user_data, VEC(gdb_xml_value_s) *attributes)
{
  VEC(lm_info_p) **list = user_data;
  struct lm_info *last = VEC_last (lm_info_p, *list);
  ULONGEST *address_p = VEC_index (gdb_xml_value_s, attributes, 0)->value;
  CORE_ADDR address = (CORE_ADDR) *address_p;

  VEC_safe_push (CORE_ADDR, last->segment_bases, &address);
}

/* Handle the start of a <library> element.  */

static void
library_list_start_library (struct gdb_xml_parser *parser,
			    const struct gdb_xml_element *element,
			    void *user_data, VEC(gdb_xml_value_s) *attributes)
{
  VEC(lm_info_p) **list = user_data;
  struct lm_info *item = XZALLOC (struct lm_info);
  const char *name = VEC_index (gdb_xml_value_s, attributes, 0)->value;

  item->name = xstrdup (name);
  VEC_safe_push (lm_info_p, *list, item);
}

/* Handle the start of a <library-list> element.  */

static void
library_list_start_list (struct gdb_xml_parser *parser,
			 const struct gdb_xml_element *element,
			 void *user_data, VEC(gdb_xml_value_s) *attributes)
{
  char *version = VEC_index (gdb_xml_value_s, attributes, 0)->value;

  if (strcmp (version, "1.0") != 0)
    gdb_xml_error (parser,
		   _("Library list has unsupported version \"%s\""),
		   version);
}

/* Discard the constructed library list.  */

static void
solib_target_free_library_list (void *p)
{
  VEC(lm_info_p) **result = p;
  struct lm_info *info;
  int ix;

  for (ix = 0; VEC_iterate (lm_info_p, *result, ix, info); ix++)
    {
      xfree (info->name);
      VEC_free (CORE_ADDR, info->segment_bases);
      xfree (info);
    }
  VEC_free (lm_info_p, *result);
  *result = NULL;
}

/* The allowed elements and attributes for an XML library list.
   The root element is a <library-list>.  */

const struct gdb_xml_attribute segment_attributes[] = {
  { "address", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
  { NULL, GDB_XML_AF_NONE, NULL, NULL }
};

const struct gdb_xml_element library_children[] = {
  { "segment", segment_attributes, NULL, GDB_XML_EF_REPEATABLE,
    library_list_start_segment, NULL },
  { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};

const struct gdb_xml_attribute library_attributes[] = {
  { "name", GDB_XML_AF_NONE, NULL, NULL },
  { NULL, GDB_XML_AF_NONE, NULL, NULL }
};

const struct gdb_xml_element library_list_children[] = {
  { "library", library_attributes, library_children,
    GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL,
    library_list_start_library, NULL },
  { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};

const struct gdb_xml_attribute library_list_attributes[] = {
  { "version", GDB_XML_AF_NONE, NULL, NULL },
  { NULL, GDB_XML_AF_NONE, NULL, NULL }
};

const struct gdb_xml_element library_list_elements[] = {
  { "library-list", library_list_attributes, library_list_children,
    GDB_XML_EF_NONE, library_list_start_list, NULL },
  { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
};

static VEC(lm_info_p) *
solib_target_parse_libraries (const char *library)
{
  struct gdb_xml_parser *parser;
  VEC(lm_info_p) *result = NULL;
  struct cleanup *before_deleting_result, *back_to;

  back_to = make_cleanup (null_cleanup, NULL);
  parser = gdb_xml_create_parser_and_cleanup (_("target library list"),
					      library_list_elements, &result);
  gdb_xml_use_dtd (parser, "library-list.dtd");

  before_deleting_result = make_cleanup (solib_target_free_library_list,
					 &result);

  if (gdb_xml_parse (parser, library) == 0)
    /* Parsed successfully, don't need to delete the result.  */
    discard_cleanups (before_deleting_result);

  do_cleanups (back_to);
  return result;
}
#endif

static struct so_list *
solib_target_current_sos (void)
{
  struct so_list *new_solib, *start = NULL, *last = NULL;
  const char *library_document;
  VEC(lm_info_p) *library_list;
  struct lm_info *info;
  int ix;

  /* Fetch the list of shared libraries.  */
  library_document = target_read_stralloc (&current_target,
					   TARGET_OBJECT_LIBRARIES,
					   NULL);
  if (library_document == NULL)
    return NULL;

  /* Parse the list.  */
  library_list = solib_target_parse_libraries (library_document);
  if (library_list == NULL)
    return NULL;

  /* Build a struct so_list for each entry on the list.  */
  for (ix = 0; VEC_iterate (lm_info_p, library_list, ix, info); ix++)
    {
      new_solib = XZALLOC (struct so_list);
      strncpy (new_solib->so_name, info->name, SO_NAME_MAX_PATH_SIZE - 1);
      new_solib->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
      strncpy (new_solib->so_original_name, info->name,
	       SO_NAME_MAX_PATH_SIZE - 1);
      new_solib->so_original_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
      new_solib->lm_info = info;

      /* We no longer need this copy of the name.  */
      xfree (info->name);
      info->name = NULL;

      /* Add it to the list.  */
      if (!start)
	last = start = new_solib;
      else
	{
	  last->next = new_solib;
	  last = new_solib;
	}
    }

  /* Free the library list, but not its members.  */
  VEC_free (lm_info_p, library_list);

  return start;
}

static void
solib_target_special_symbol_handling (void)
{
  /* Nothing needed.  */
}

static void
solib_target_solib_create_inferior_hook (void)
{
  /* Nothing needed.  */
}

static void
solib_target_clear_solib (void)
{
  /* Nothing needed.  */
}

static void
solib_target_free_so (struct so_list *so)
{
  gdb_assert (so->lm_info->name == NULL);
  xfree (so->lm_info->offsets);
  VEC_free (CORE_ADDR, so->lm_info->segment_bases);
  xfree (so->lm_info);
}

static void
solib_target_relocate_section_addresses (struct so_list *so,
					 struct section_table *sec)
{
  int flags = bfd_get_section_flags (sec->bfd, sec->the_bfd_section);
  CORE_ADDR offset;

  /* Build the offset table only once per object file.  We can not do
     it any earlier, since we need to open the file first.  */
  if (so->lm_info->offsets == NULL)
    {
      struct symfile_segment_data *data;
      int num_sections = bfd_count_sections (so->abfd);

      so->lm_info->offsets = xzalloc (SIZEOF_N_SECTION_OFFSETS (num_sections));

      data = get_symfile_segment_data (so->abfd);
      if (data == NULL)
	warning (_("Could not relocate shared library \"%s\": no segments"),
		 so->so_name);
      else
	{
	  ULONGEST orig_delta;
	  int i;
	  int num_bases = VEC_length (CORE_ADDR, so->lm_info->segment_bases);
	  CORE_ADDR *segment_bases = VEC_address (CORE_ADDR,
						  so->lm_info->segment_bases);

	  if (!symfile_map_offsets_to_segments (so->abfd, data,
						so->lm_info->offsets,
						num_bases, segment_bases))
	    warning (_("Could not relocate shared library \"%s\": bad offsets"),
		     so->so_name);

	  /* Find the range of addresses to report for this library in
	     "info sharedlibrary".  Report any consecutive segments
	     which were relocated as a single unit.  */
	  gdb_assert (num_bases > 0);
	  orig_delta = segment_bases[0] - data->segment_bases[0];

	  for (i = 1; i < data->num_segments; i++)
	    {
	      /* If we have run out of offsets, assume all remaining segments
		 have the same offset.  */
	      if (i >= num_bases)
		continue;

	      /* If this segment does not have the same offset, do not include
		 it in the library's range.  */
	      if (segment_bases[i] - data->segment_bases[i] != orig_delta)
		break;
	    }

	  so->addr_low = segment_bases[0];
	  so->addr_high = (data->segment_bases[i - 1]
			   + data->segment_sizes[i - 1]
			   + orig_delta);
	  gdb_assert (so->addr_low <= so->addr_high);

	  free_symfile_segment_data (data);
	}
    }

  offset = so->lm_info->offsets->offsets[sec->the_bfd_section->index];
  sec->addr += offset;
  sec->endaddr += offset;
}

static int
solib_target_open_symbol_file_object (void *from_ttyp)
{
  /* We can't locate the main symbol file based on the target's
     knowledge; the user has to specify it.  */
  return 0;
}

static int
solib_target_in_dynsym_resolve_code (CORE_ADDR pc)
{
  /* We don't have a range of addresses for the dynamic linker; there
     may not be one in the program's address space.  So only report
     PLT entries (which may be import stubs).  */
  return in_plt_section (pc, NULL);
}

static struct target_so_ops solib_target_so_ops;

extern initialize_file_ftype _initialize_solib_target; /* -Wmissing-prototypes */

void
_initialize_solib_target (void)
{
  solib_target_so_ops.relocate_section_addresses
    = solib_target_relocate_section_addresses;
  solib_target_so_ops.free_so = solib_target_free_so;
  solib_target_so_ops.clear_solib = solib_target_clear_solib;
  solib_target_so_ops.solib_create_inferior_hook
    = solib_target_solib_create_inferior_hook;
  solib_target_so_ops.special_symbol_handling
    = solib_target_special_symbol_handling;
  solib_target_so_ops.current_sos = solib_target_current_sos;
  solib_target_so_ops.open_symbol_file_object
    = solib_target_open_symbol_file_object;
  solib_target_so_ops.in_dynsym_resolve_code
    = solib_target_in_dynsym_resolve_code;

  current_target_so_ops = &solib_target_so_ops;
}
Commit	Line	Data
	1	/* Definitions for targets which report shared library events.
	2
	3	Copyright (C) 2007
	4	Free Software Foundation, Inc.
	5
	6	This file is part of GDB.
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 3 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	20
	21	#include "defs.h"
	22	#include "objfiles.h"
	23	#include "solist.h"
	24	#include "symtab.h"
	25	#include "symfile.h"
	26	#include "target.h"
	27	#include "vec.h"
	28
	29	#include "gdb_string.h"
	30
	31	DEF_VEC_O(CORE_ADDR);
	32
	33	/* Private data for each loaded library. */
	34	struct lm_info
	35	{
	36	/* The library's name. The name is normally kept in the struct
	37	so_list; it is only here during XML parsing. */
	38	char *name;
	39
	40	/* The base addresses for each independently relocatable segment of
	41	this shared library. */
	42	VEC(CORE_ADDR) *segment_bases;
	43
	44	/* The cached offsets for each section of this shared library,
	45	determined from SEGMENT_BASES. */
	46	struct section_offsets *offsets;
	47	};
	48
	49	typedef struct lm_info *lm_info_p;
	50	DEF_VEC_P(lm_info_p);
	51
	52	#if !defined(HAVE_LIBEXPAT)
	53
	54	static VEC(lm_info_p)
	55	solib_target_parse_libraries (const char *library)
	56	{
	57	static int have_warned;
	58
	59	if (!have_warned)
	60	{
	61	have_warned = 1;
	62	warning (_("Can not parse XML library list; XML support was disabled "
	63	"at compile time"));
	64	}
	65
	66	return NULL;
	67	}
	68
	69	#else /* HAVE_LIBEXPAT */
	70
	71	#include "xml-support.h"
	72
	73	/* Handle the start of a <segment> element. */
	74
	75	static void
	76	library_list_start_segment (struct gdb_xml_parser *parser,
	77	const struct gdb_xml_element *element,
	78	void user_data, VEC(gdb_xml_value_s) attributes)
	79	{
	80	VEC(lm_info_p) **list = user_data;
	81	struct lm_info last = VEC_last (lm_info_p, list);
	82	ULONGEST *address_p = VEC_index (gdb_xml_value_s, attributes, 0)->value;
	83	CORE_ADDR address = (CORE_ADDR) *address_p;
	84
	85	VEC_safe_push (CORE_ADDR, last->segment_bases, &address);
	86	}
	87
	88	/* Handle the start of a <library> element. */
	89
	90	static void
	91	library_list_start_library (struct gdb_xml_parser *parser,
	92	const struct gdb_xml_element *element,
	93	void user_data, VEC(gdb_xml_value_s) attributes)
	94	{
	95	VEC(lm_info_p) **list = user_data;
	96	struct lm_info *item = XZALLOC (struct lm_info);
	97	const char *name = VEC_index (gdb_xml_value_s, attributes, 0)->value;
	98
	99	item->name = xstrdup (name);
	100	VEC_safe_push (lm_info_p, *list, item);
	101	}
	102
	103	/* Handle the start of a <library-list> element. */
	104
	105	static void
	106	library_list_start_list (struct gdb_xml_parser *parser,
	107	const struct gdb_xml_element *element,
	108	void user_data, VEC(gdb_xml_value_s) attributes)
	109	{
	110	char *version = VEC_index (gdb_xml_value_s, attributes, 0)->value;
	111
	112	if (strcmp (version, "1.0") != 0)
	113	gdb_xml_error (parser,
	114	_("Library list has unsupported version \"%s\""),
	115	version);
	116	}
	117
	118	/* Discard the constructed library list. */
	119
	120	static void
	121	solib_target_free_library_list (void *p)
	122	{
	123	VEC(lm_info_p) **result = p;
	124	struct lm_info *info;
	125	int ix;
	126
	127	for (ix = 0; VEC_iterate (lm_info_p, *result, ix, info); ix++)
	128	{
	129	xfree (info->name);
	130	VEC_free (CORE_ADDR, info->segment_bases);
	131	xfree (info);
	132	}
	133	VEC_free (lm_info_p, *result);
	134	*result = NULL;
	135	}
	136
	137	/* The allowed elements and attributes for an XML library list.
	138	The root element is a <library-list>. */
	139
	140	const struct gdb_xml_attribute segment_attributes[] = {
	141	{ "address", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL },
	142	{ NULL, GDB_XML_AF_NONE, NULL, NULL }
	143	};
	144
	145	const struct gdb_xml_element library_children[] = {
	146	{ "segment", segment_attributes, NULL, GDB_XML_EF_REPEATABLE,
	147	library_list_start_segment, NULL },
	148	{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
	149	};
	150
	151	const struct gdb_xml_attribute library_attributes[] = {
	152	{ "name", GDB_XML_AF_NONE, NULL, NULL },
	153	{ NULL, GDB_XML_AF_NONE, NULL, NULL }
	154	};
	155
	156	const struct gdb_xml_element library_list_children[] = {
	157	{ "library", library_attributes, library_children,
	158	GDB_XML_EF_REPEATABLE \| GDB_XML_EF_OPTIONAL,
	159	library_list_start_library, NULL },
	160	{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
	161	};
	162
	163	const struct gdb_xml_attribute library_list_attributes[] = {
	164	{ "version", GDB_XML_AF_NONE, NULL, NULL },
	165	{ NULL, GDB_XML_AF_NONE, NULL, NULL }
	166	};
	167
	168	const struct gdb_xml_element library_list_elements[] = {
	169	{ "library-list", library_list_attributes, library_list_children,
	170	GDB_XML_EF_NONE, library_list_start_list, NULL },
	171	{ NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL }
	172	};
	173
	174	static VEC(lm_info_p) *
	175	solib_target_parse_libraries (const char *library)
	176	{
	177	struct gdb_xml_parser *parser;
	178	VEC(lm_info_p) *result = NULL;
	179	struct cleanup before_deleting_result, back_to;
	180
	181	back_to = make_cleanup (null_cleanup, NULL);
	182	parser = gdb_xml_create_parser_and_cleanup (_("target library list"),
	183	library_list_elements, &result);
	184	gdb_xml_use_dtd (parser, "library-list.dtd");
	185
	186	before_deleting_result = make_cleanup (solib_target_free_library_list,
	187	&result);
	188
	189	if (gdb_xml_parse (parser, library) == 0)
	190	/* Parsed successfully, don't need to delete the result. */
	191	discard_cleanups (before_deleting_result);
	192
	193	do_cleanups (back_to);
	194	return result;
	195	}
	196	#endif
	197
	198	static struct so_list *
	199	solib_target_current_sos (void)
	200	{
	201	struct so_list new_solib, start = NULL, *last = NULL;
	202	const char *library_document;
	203	VEC(lm_info_p) *library_list;
	204	struct lm_info *info;
	205	int ix;
	206
	207	/* Fetch the list of shared libraries. */
	208	library_document = target_read_stralloc (&current_target,
	209	TARGET_OBJECT_LIBRARIES,
	210	NULL);
	211	if (library_document == NULL)
	212	return NULL;
	213
	214	/* Parse the list. */
	215	library_list = solib_target_parse_libraries (library_document);
	216	if (library_list == NULL)
	217	return NULL;
	218
	219	/* Build a struct so_list for each entry on the list. */
	220	for (ix = 0; VEC_iterate (lm_info_p, library_list, ix, info); ix++)
	221	{
	222	new_solib = XZALLOC (struct so_list);
	223	strncpy (new_solib->so_name, info->name, SO_NAME_MAX_PATH_SIZE - 1);
	224	new_solib->so_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
	225	strncpy (new_solib->so_original_name, info->name,
	226	SO_NAME_MAX_PATH_SIZE - 1);
	227	new_solib->so_original_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
	228	new_solib->lm_info = info;
	229
	230	/* We no longer need this copy of the name. */
	231	xfree (info->name);
	232	info->name = NULL;
	233
	234	/* Add it to the list. */
	235	if (!start)
	236	last = start = new_solib;
	237	else
	238	{
	239	last->next = new_solib;
	240	last = new_solib;
	241	}
	242	}
	243
	244	/* Free the library list, but not its members. */
	245	VEC_free (lm_info_p, library_list);
	246
	247	return start;
	248	}
	249
	250	static void
	251	solib_target_special_symbol_handling (void)
	252	{
	253	/* Nothing needed. */
	254	}
	255
	256	static void
	257	solib_target_solib_create_inferior_hook (void)
	258	{
	259	/* Nothing needed. */
	260	}
	261
	262	static void
	263	solib_target_clear_solib (void)
	264	{
	265	/* Nothing needed. */
	266	}
	267
	268	static void
	269	solib_target_free_so (struct so_list *so)
	270	{
	271	gdb_assert (so->lm_info->name == NULL);
	272	xfree (so->lm_info->offsets);
	273	VEC_free (CORE_ADDR, so->lm_info->segment_bases);
	274	xfree (so->lm_info);
	275	}
	276
	277	static void
	278	solib_target_relocate_section_addresses (struct so_list *so,
	279	struct section_table *sec)
	280	{
	281	int flags = bfd_get_section_flags (sec->bfd, sec->the_bfd_section);
	282	CORE_ADDR offset;
	283
	284	/* Build the offset table only once per object file. We can not do
	285	it any earlier, since we need to open the file first. */
	286	if (so->lm_info->offsets == NULL)
	287	{
	288	struct symfile_segment_data *data;
	289	int num_sections = bfd_count_sections (so->abfd);
	290
	291	so->lm_info->offsets = xzalloc (SIZEOF_N_SECTION_OFFSETS (num_sections));
	292
	293	data = get_symfile_segment_data (so->abfd);
	294	if (data == NULL)
	295	warning (_("Could not relocate shared library \"%s\": no segments"),
	296	so->so_name);
	297	else
	298	{
	299	ULONGEST orig_delta;
	300	int i;
	301	int num_bases = VEC_length (CORE_ADDR, so->lm_info->segment_bases);
	302	CORE_ADDR *segment_bases = VEC_address (CORE_ADDR,
	303	so->lm_info->segment_bases);
	304
	305	if (!symfile_map_offsets_to_segments (so->abfd, data,
	306	so->lm_info->offsets,
	307	num_bases, segment_bases))
	308	warning (_("Could not relocate shared library \"%s\": bad offsets"),
	309	so->so_name);
	310
	311	/* Find the range of addresses to report for this library in
	312	"info sharedlibrary". Report any consecutive segments
	313	which were relocated as a single unit. */
	314	gdb_assert (num_bases > 0);
	315	orig_delta = segment_bases[0] - data->segment_bases[0];
	316
	317	for (i = 1; i < data->num_segments; i++)
	318	{
	319	/* If we have run out of offsets, assume all remaining segments
	320	have the same offset. */
	321	if (i >= num_bases)
	322	continue;
	323
	324	/* If this segment does not have the same offset, do not include
	325	it in the library's range. */
	326	if (segment_bases[i] - data->segment_bases[i] != orig_delta)
	327	break;
	328	}
	329
	330	so->addr_low = segment_bases[0];
	331	so->addr_high = (data->segment_bases[i - 1]
	332	+ data->segment_sizes[i - 1]
	333	+ orig_delta);
	334	gdb_assert (so->addr_low <= so->addr_high);
	335
	336	free_symfile_segment_data (data);
	337	}
	338	}
	339
	340	offset = so->lm_info->offsets->offsets[sec->the_bfd_section->index];
	341	sec->addr += offset;
	342	sec->endaddr += offset;
	343	}
	344
	345	static int
	346	solib_target_open_symbol_file_object (void *from_ttyp)
	347	{
	348	/* We can't locate the main symbol file based on the target's
	349	knowledge; the user has to specify it. */
	350	return 0;
	351	}
	352
	353	static int
	354	solib_target_in_dynsym_resolve_code (CORE_ADDR pc)
	355	{
	356	/* We don't have a range of addresses for the dynamic linker; there
	357	may not be one in the program's address space. So only report
	358	PLT entries (which may be import stubs). */
	359	return in_plt_section (pc, NULL);
	360	}
	361
	362	static struct target_so_ops solib_target_so_ops;
	363
	364	extern initialize_file_ftype _initialize_solib_target; /* -Wmissing-prototypes */
	365
	366	void
	367	_initialize_solib_target (void)
	368	{
	369	solib_target_so_ops.relocate_section_addresses
	370	= solib_target_relocate_section_addresses;
	371	solib_target_so_ops.free_so = solib_target_free_so;
	372	solib_target_so_ops.clear_solib = solib_target_clear_solib;
	373	solib_target_so_ops.solib_create_inferior_hook
	374	= solib_target_solib_create_inferior_hook;
	375	solib_target_so_ops.special_symbol_handling
	376	= solib_target_special_symbol_handling;
	377	solib_target_so_ops.current_sos = solib_target_current_sos;
	378	solib_target_so_ops.open_symbol_file_object
	379	= solib_target_open_symbol_file_object;
	380	solib_target_so_ops.in_dynsym_resolve_code
	381	= solib_target_in_dynsym_resolve_code;
	382
	383	current_target_so_ops = &solib_target_so_ops;
	384	}