/* Plugin support for BFD.
- Copyright 2009
- Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
-#include "config.h"
+#include "sysdep.h"
+#include "bfd.h"
+
+#if BFD_SUPPORTS_PLUGINS
+
#include <assert.h>
+#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
+#elif defined (HAVE_WINDOWS_H)
+#include <windows.h>
+#else
+#error Unknown how to handle dynamic-load-libraries.
+#endif
#include <stdarg.h>
#include "plugin-api.h"
-#include "sysdep.h"
#include "plugin.h"
#include "libbfd.h"
#include "libiberty.h"
#include <dirent.h>
+#if !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_H)
+
+#define RTLD_NOW 0 /* Dummy value. */
+
+static void *
+dlopen (const char *file, int mode ATTRIBUTE_UNUSED)
+{
+ return LoadLibrary (file);
+}
+
+static void *
+dlsym (void *handle, const char *name)
+{
+ return GetProcAddress (handle, name);
+}
+
+static int ATTRIBUTE_UNUSED
+dlclose (void *handle)
+{
+ FreeLibrary (handle);
+ return 0;
+}
+
+static const char *
+dlerror (void)
+{
+ return "Unable to load DLL.";
+}
+
+#endif /* !defined (HAVE_DLFCN_H) && defined (HAVE_WINDOWS_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_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_line _bfd_nosymbols_find_line
#define bfd_plugin_find_inliner_info _bfd_nosymbols_find_inliner_info
+#define bfd_plugin_get_symbol_version_string _bfd_nosymbols_get_symbol_version_string
#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_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_lookup_section_flags bfd_generic_lookup_section_flags
#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,
va_start (args, format);
printf ("bfd plugin: ");
vprintf (format, args);
+ putchar ('\n');
va_end (args);
return LDPS_OK;
}
{
bfd *abfd = handle;
struct plugin_data_struct *plugin_data =
- bfd_alloc (abfd, sizeof (plugin_data_struct));;
+ bfd_alloc (abfd, sizeof (plugin_data_struct));
plugin_data->nsyms = nsyms;
plugin_data->syms = syms;
return LDPS_OK;
}
-extern char *program_name __attribute__ ((weak));
+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)
+try_claim (bfd *abfd)
{
- static void *plugin_handle;
+ int claimed = 0;
+ struct ld_plugin_input_file file;
+ bfd *iobfd;
+
+ file.name = abfd->filename;
+
+ if (abfd->my_archive)
+ {
+ iobfd = abfd->my_archive;
+ file.offset = abfd->origin;
+ file.filesize = arelt_size (abfd);
+ }
+ else
+ {
+ iobfd = abfd;
+ file.offset = 0;
+ file.filesize = 0;
+ }
+
+ if (!iobfd->iostream && !bfd_open_file (iobfd))
+ return 0;
+
+ file.fd = fileno ((FILE *) iobfd->iostream);
+
+ if (!abfd->my_archive)
+ {
+ struct stat stat_buf;
+ if (fstat (file.fd, &stat_buf))
+ return 0;
+ file.filesize = stat_buf.st_size;
+ }
+
+ file.handle = abfd;
+ off_t cur_offset = lseek(file.fd, 0, SEEK_CUR);
+ claim_file (&file, &claimed);
+ lseek(file.fd, cur_offset, SEEK_SET);
+ if (!claimed)
+ return 0;
+
+ return 1;
+}
+
+static int
+try_load_plugin (const char *pname, bfd *abfd, int *has_plugin_p)
+{
+ 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;
+ *has_plugin_p = 0;
+
plugin_handle = dlopen (pname, RTLD_NOW);
if (!plugin_handle)
{
if (status != LDPS_OK)
goto err;
+ *has_plugin_p = 1;
+
+ abfd->plugin_format = bfd_plugin_no;
+
if (!claim_file)
goto err;
+ if (!try_claim (abfd))
+ goto err;
+
+ abfd->plugin_format = bfd_plugin_yes;
+
return 1;
err:
- plugin_handle = NULL;
return 0;
}
+/* There may be plugin libraries in lib/bfd-plugins. */
+
+static int has_plugin = -1;
+
+static const bfd_target *(*ld_plugin_object_p) (bfd *);
+
static const char *plugin_name;
void
bfd_plugin_set_plugin (const char *p)
{
plugin_name = p;
+ has_plugin = p != NULL;
+}
+
+/* Return TRUE if a plugin library is used. */
+
+bfd_boolean
+bfd_plugin_specified_p (void)
+{
+ return has_plugin > 0;
+}
+
+extern const bfd_target plugin_vec;
+
+/* Return TRUE if TARGET is a pointer to plugin_vec. */
+
+bfd_boolean
+bfd_plugin_target_p (const bfd_target *target)
+{
+ return target == &plugin_vec;
+}
+
+/* Register OBJECT_P to be used by bfd_plugin_object_p. */
+
+void
+register_ld_plugin_object_p (const bfd_target *(*object_p) (bfd *))
+{
+ ld_plugin_object_p = object_p;
}
static int
-load_plugin (void)
+load_plugin (bfd *abfd)
{
char *plugin_dir;
char *p;
struct dirent *ent;
int found = 0;
+ if (!has_plugin)
+ return found;
+
if (plugin_name)
- return try_load_plugin (plugin_name);
+ return try_load_plugin (plugin_name, abfd, &has_plugin);
- if (!program_name)
- return 0;
+ if (plugin_program_name == NULL)
+ return found;
plugin_dir = concat (BINDIR, "/../lib/bfd-plugins", NULL);
- p = make_relative_prefix (program_name,
+ p = make_relative_prefix (plugin_program_name,
BINDIR,
plugin_dir);
free (plugin_dir);
while ((ent = readdir (d)))
{
char *full_name;
- if (ent->d_type != DT_REG && ent->d_type != DT_LNK)
- continue;
+ struct stat s;
+ int valid_plugin;
full_name = concat (p, "/", ent->d_name, NULL);
- found = try_load_plugin (full_name);
+ if (stat(full_name, &s) == 0 && S_ISREG (s.st_mode))
+ found = try_load_plugin (full_name, abfd, &valid_plugin);
+ if (has_plugin <= 0)
+ has_plugin = valid_plugin;
free (full_name);
if (found)
break;
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;
+ if (ld_plugin_object_p)
+ return ld_plugin_object_p (abfd);
- file.name = abfd->filename;
-
- if (abfd->iostream)
- {
- file.fd = fileno (abfd->iostream);
- file.offset = 0;
- file.filesize = 0; /*FIXME*/
- }
- else
- {
- bfd *archive = abfd->my_archive;
- BFD_ASSERT (archive);
- file.fd = fileno (archive->iostream);
- file.offset = abfd->origin;
- file.filesize = arelt_size (abfd);
-
- }
- file.handle = abfd;
- claim_file (&file, &claimed);
- if (!claimed)
+ if (abfd->plugin_format == bfd_plugin_uknown && !load_plugin (abfd))
return NULL;
- return abfd->xvec;
+ return abfd->plugin_format == bfd_plugin_yes ? abfd->xvec : NULL;
}
/* Copy any private info we understand from the input bfd
return 0;
}
+static int
+bfd_plugin_core_file_pid (bfd *abfd ATTRIBUTE_UNUSED)
+{
+ BFD_ASSERT (0);
+ return 0;
+}
+
static long
bfd_plugin_get_symtab_upper_bound (bfd *abfd)
{
convert_flags (const struct ld_plugin_symbol *sym)
{
switch (sym->def)
- {
+ {
case LDPK_DEF:
case LDPK_COMMON:
case LDPK_UNDEF:
for (i = 0; i < nsyms; i++)
{
- asymbol *s = bfd_alloc (abfd, sizeof (asymbol));
+ asymbol *s = bfd_alloc (abfd, sizeof (asymbol));
BFD_ASSERT (s);
alocation[i] = s;
static asymbol *
bfd_plugin_make_empty_symbol (bfd *abfd)
{
- asymbol *new = bfd_zalloc (abfd, sizeof (asymbol));
- if (new == NULL)
- return new;
- new->the_bfd = abfd;
- return new;
+ 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
return 0;
}
-static bfd_boolean
-bfd_plugin_mkobject (bfd *abfd ATTRIBUTE_UNUSED)
-{
- BFD_ASSERT (0);
- return 0;
-}
-
const bfd_target plugin_vec =
{
"plugin", /* Name. */
0, /* symbol_leading_char. */
'/', /* ar_pad_char. */
15, /* ar_max_namelen. */
+ 0, /* match priority. */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
},
{ /* bfd_set_format. */
bfd_false,
- bfd_plugin_mkobject,
+ bfd_false,
_bfd_generic_mkarchive,
bfd_false,
},
NULL /* backend_data. */
};
+#endif /* BFD_SUPPORTS_PLUGIN */
projects / deliverable / binutils-gdb.git / blobdiff