/* Plugin support for BFD.
- Copyright (C) 2009-2014 Free Software Foundation, Inc.
+ Copyright (C) 2009-2016 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#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_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
+#define bfd_plugin_bfd_link_check_relocs _bfd_generic_link_check_relocs
static enum ld_plugin_status
message (int level ATTRIBUTE_UNUSED,
}
static int
-try_load_plugin (const char *pname)
+try_claim (bfd *abfd)
{
- static void *plugin_handle;
- int tv_size = 4;
- struct ld_plugin_tv tv[tv_size];
+ 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;
+ struct ld_plugin_tv tv[4];
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 (plugin_program_name == NULL)
- return 0;
+ return found;
plugin_dir = concat (BINDIR, "/../lib/bfd-plugins", NULL);
p = make_relative_prefix (plugin_program_name,
{
char *full_name;
struct stat s;
+ int valid_plugin;
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);
+ 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;
- struct ld_plugin_input_file file;
- bfd *iobfd;
- static int have_loaded = 0;
- static int have_plugin = 0;
-
- if (!have_loaded)
- {
- have_loaded = 1;
- have_plugin = load_plugin ();
- }
- if (!have_plugin)
- return NULL;
+ if (ld_plugin_object_p)
+ return ld_plugin_object_p (abfd);
- 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 NULL;
-
- file.fd = fileno ((FILE *) iobfd->iostream);
-
- if (!abfd->my_archive)
- {
- struct stat stat_buf;
- if (fstat (file.fd, &stat_buf))
- return NULL;
- 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)
+ 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
0, /* symbol_leading_char. */
'/', /* ar_pad_char. */
15, /* ar_max_namelen. */
- 0, /* match priority. */
+ 255, /* match priority. */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
projects / deliverable / binutils-gdb.git / blobdiff