1 /* Plugin support for BFD.
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
25 #if BFD_SUPPORTS_PLUGINS
30 #include "plugin-api.h"
34 #include "libiberty.h"
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
72 static enum ld_plugin_status
73 message (int level ATTRIBUTE_UNUSED
,
74 const char * format
, ...)
77 va_start (args
, format
);
78 printf ("bfd plugin: ");
79 vprintf (format
, args
);
84 /* Register a claim-file handler. */
85 static ld_plugin_claim_file_handler claim_file
;
87 static enum ld_plugin_status
88 register_claim_file (ld_plugin_claim_file_handler handler
)
94 static enum ld_plugin_status
95 add_symbols (void * handle
,
97 const struct ld_plugin_symbol
* syms
)
100 struct plugin_data_struct
*plugin_data
=
101 bfd_alloc (abfd
, sizeof (plugin_data_struct
));;
103 plugin_data
->nsyms
= nsyms
;
104 plugin_data
->syms
= syms
;
107 abfd
->flags
|= HAS_SYMS
;
109 abfd
->tdata
.plugin_data
= plugin_data
;
113 static const char *plugin_program_name
;
116 bfd_plugin_set_program_name (const char *program_name
)
118 plugin_program_name
= program_name
;
122 try_load_plugin (const char *pname
)
124 static void *plugin_handle
;
126 struct ld_plugin_tv tv
[tv_size
];
128 ld_plugin_onload onload
;
129 enum ld_plugin_status status
;
131 plugin_handle
= dlopen (pname
, RTLD_NOW
);
134 (*_bfd_error_handler
)("%s\n", dlerror ());
138 onload
= dlsym (plugin_handle
, "onload");
143 tv
[i
].tv_tag
= LDPT_MESSAGE
;
144 tv
[i
].tv_u
.tv_message
= message
;
147 tv
[i
].tv_tag
= LDPT_REGISTER_CLAIM_FILE_HOOK
;
148 tv
[i
].tv_u
.tv_register_claim_file
= register_claim_file
;
151 tv
[i
].tv_tag
= LDPT_ADD_SYMBOLS
;
152 tv
[i
].tv_u
.tv_add_symbols
= add_symbols
;
155 tv
[i
].tv_tag
= LDPT_NULL
;
156 tv
[i
].tv_u
.tv_val
= 0;
158 status
= (*onload
)(tv
);
160 if (status
!= LDPS_OK
)
169 plugin_handle
= NULL
;
173 static const char *plugin_name
;
176 bfd_plugin_set_plugin (const char *p
)
191 return try_load_plugin (plugin_name
);
193 if (plugin_program_name
== NULL
)
196 plugin_dir
= concat (BINDIR
, "/../lib/bfd-plugins", NULL
);
197 p
= make_relative_prefix (plugin_program_name
,
207 while ((ent
= readdir (d
)))
212 full_name
= concat (p
, "/", ent
->d_name
, NULL
);
213 if (stat(full_name
, &s
) == 0 && S_ISREG (s
.st_mode
))
214 found
= try_load_plugin (full_name
);
229 static const bfd_target
*
230 bfd_plugin_object_p (bfd
*abfd
)
233 int t
= load_plugin ();
234 struct ld_plugin_input_file file
;
238 file
.name
= abfd
->filename
;
242 file
.fd
= fileno (abfd
->iostream
);
244 file
.filesize
= 0; /*FIXME*/
248 bfd
*archive
= abfd
->my_archive
;
249 BFD_ASSERT (archive
);
250 file
.fd
= fileno (archive
->iostream
);
251 file
.offset
= abfd
->origin
;
252 file
.filesize
= arelt_size (abfd
);
256 claim_file (&file
, &claimed
);
263 /* Copy any private info we understand from the input bfd
264 to the output bfd. */
267 bfd_plugin_bfd_copy_private_bfd_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
268 bfd
*obfd ATTRIBUTE_UNUSED
)
274 /* Copy any private info we understand from the input section
275 to the output section. */
278 bfd_plugin_bfd_copy_private_section_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
279 asection
*isection ATTRIBUTE_UNUSED
,
280 bfd
*obfd ATTRIBUTE_UNUSED
,
281 asection
*osection ATTRIBUTE_UNUSED
)
287 /* Copy any private info we understand from the input symbol
288 to the output symbol. */
291 bfd_plugin_bfd_copy_private_symbol_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
292 asymbol
*isymbol ATTRIBUTE_UNUSED
,
293 bfd
*obfd ATTRIBUTE_UNUSED
,
294 asymbol
*osymbol ATTRIBUTE_UNUSED
)
301 bfd_plugin_bfd_print_private_bfd_data (bfd
*abfd ATTRIBUTE_UNUSED
, PTR ptr ATTRIBUTE_UNUSED
)
308 bfd_plugin_core_file_failing_command (bfd
*abfd ATTRIBUTE_UNUSED
)
315 bfd_plugin_core_file_failing_signal (bfd
*abfd ATTRIBUTE_UNUSED
)
322 bfd_plugin_get_symtab_upper_bound (bfd
*abfd
)
324 struct plugin_data_struct
*plugin_data
= abfd
->tdata
.plugin_data
;
325 long nsyms
= plugin_data
->nsyms
;
327 BFD_ASSERT (nsyms
>= 0);
329 return ((nsyms
+ 1) * sizeof (asymbol
*));
333 convert_flags (const struct ld_plugin_symbol
*sym
)
344 return BSF_GLOBAL
| BSF_WEAK
;
353 bfd_plugin_canonicalize_symtab (bfd
*abfd
,
356 struct plugin_data_struct
*plugin_data
= abfd
->tdata
.plugin_data
;
357 long nsyms
= plugin_data
->nsyms
;
358 const struct ld_plugin_symbol
*syms
= plugin_data
->syms
;
359 static asection fake_section
;
360 static asection fake_common_section
;
363 fake_section
.name
= ".text";
364 fake_common_section
.flags
= SEC_IS_COMMON
;
366 for (i
= 0; i
< nsyms
; i
++)
368 asymbol
*s
= bfd_alloc (abfd
, sizeof (asymbol
));
374 s
->name
= syms
[i
].name
;
376 s
->flags
= convert_flags (&syms
[i
]);
380 s
->section
= &fake_common_section
;
384 s
->section
= bfd_und_section_ptr
;
388 s
->section
= &fake_section
;
394 s
->udata
.p
= (void *) &syms
[i
];
401 bfd_plugin_print_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
402 PTR afile ATTRIBUTE_UNUSED
,
403 asymbol
*symbol ATTRIBUTE_UNUSED
,
404 bfd_print_symbol_type how ATTRIBUTE_UNUSED
)
410 bfd_plugin_get_symbol_info (bfd
*abfd ATTRIBUTE_UNUSED
,
414 bfd_symbol_info (symbol
, ret
);
417 /* Make an empty symbol. */
420 bfd_plugin_make_empty_symbol (bfd
*abfd
)
422 asymbol
*new_symbol
= bfd_zalloc (abfd
, sizeof (asymbol
));
423 if (new_symbol
== NULL
)
425 new_symbol
->the_bfd
= abfd
;
430 bfd_plugin_sizeof_headers (bfd
*a ATTRIBUTE_UNUSED
,
431 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
438 bfd_plugin_mkobject (bfd
*abfd ATTRIBUTE_UNUSED
)
444 const bfd_target plugin_vec
=
446 "plugin", /* Name. */
447 bfd_target_unknown_flavour
,
448 BFD_ENDIAN_LITTLE
, /* Target byte order. */
449 BFD_ENDIAN_LITTLE
, /* Target headers byte order. */
450 (HAS_RELOC
| EXEC_P
| /* Object flags. */
451 HAS_LINENO
| HAS_DEBUG
|
452 HAS_SYMS
| HAS_LOCALS
| DYNAMIC
| WP_TEXT
| D_PAGED
),
453 (SEC_CODE
| SEC_DATA
| SEC_ROM
| SEC_HAS_CONTENTS
454 | SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* Section flags. */
455 0, /* symbol_leading_char. */
456 '/', /* ar_pad_char. */
457 15, /* ar_max_namelen. */
459 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
460 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
461 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* data */
462 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
463 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
464 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* hdrs */
466 { /* bfd_check_format. */
469 bfd_generic_archive_p
,
472 { /* bfd_set_format. */
475 _bfd_generic_mkarchive
,
478 { /* bfd_write_contents. */
481 _bfd_write_archive_contents
,
485 BFD_JUMP_TABLE_GENERIC (bfd_plugin
),
486 BFD_JUMP_TABLE_COPY (bfd_plugin
),
487 BFD_JUMP_TABLE_CORE (bfd_plugin
),
488 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff
),
489 BFD_JUMP_TABLE_SYMBOLS (bfd_plugin
),
490 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs
),
491 BFD_JUMP_TABLE_WRITE (bfd_plugin
),
492 BFD_JUMP_TABLE_LINK (bfd_plugin
),
493 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic
),
497 NULL
/* backend_data. */
499 #endif /* BFD_SUPPORTS_PLUGIN */