--- /dev/null
+/* 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 <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
+
+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 (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)
+ 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. */
+};
projects / msp430-binutils.git / blobdiff