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
71 #define bfd_plugin_bfd_copy_link_hash_symbol_type _bfd_generic_copy_link_hash_symbol_type
73 static enum ld_plugin_status
74 message (int level ATTRIBUTE_UNUSED
,
75 const char * format
, ...)
78 va_start (args
, format
);
79 printf ("bfd plugin: ");
80 vprintf (format
, args
);
85 /* Register a claim-file handler. */
86 static ld_plugin_claim_file_handler claim_file
;
88 static enum ld_plugin_status
89 register_claim_file (ld_plugin_claim_file_handler handler
)
95 static enum ld_plugin_status
96 add_symbols (void * handle
,
98 const struct ld_plugin_symbol
* syms
)
101 struct plugin_data_struct
*plugin_data
=
102 bfd_alloc (abfd
, sizeof (plugin_data_struct
));;
104 plugin_data
->nsyms
= nsyms
;
105 plugin_data
->syms
= syms
;
108 abfd
->flags
|= HAS_SYMS
;
110 abfd
->tdata
.plugin_data
= plugin_data
;
114 static const char *plugin_program_name
;
117 bfd_plugin_set_program_name (const char *program_name
)
119 plugin_program_name
= program_name
;
123 try_load_plugin (const char *pname
)
125 static void *plugin_handle
;
127 struct ld_plugin_tv tv
[tv_size
];
129 ld_plugin_onload onload
;
130 enum ld_plugin_status status
;
132 plugin_handle
= dlopen (pname
, RTLD_NOW
);
135 (*_bfd_error_handler
)("%s\n", dlerror ());
139 onload
= dlsym (plugin_handle
, "onload");
144 tv
[i
].tv_tag
= LDPT_MESSAGE
;
145 tv
[i
].tv_u
.tv_message
= message
;
148 tv
[i
].tv_tag
= LDPT_REGISTER_CLAIM_FILE_HOOK
;
149 tv
[i
].tv_u
.tv_register_claim_file
= register_claim_file
;
152 tv
[i
].tv_tag
= LDPT_ADD_SYMBOLS
;
153 tv
[i
].tv_u
.tv_add_symbols
= add_symbols
;
156 tv
[i
].tv_tag
= LDPT_NULL
;
157 tv
[i
].tv_u
.tv_val
= 0;
159 status
= (*onload
)(tv
);
161 if (status
!= LDPS_OK
)
170 plugin_handle
= NULL
;
174 static const char *plugin_name
;
177 bfd_plugin_set_plugin (const char *p
)
192 return try_load_plugin (plugin_name
);
194 if (plugin_program_name
== NULL
)
197 plugin_dir
= concat (BINDIR
, "/../lib/bfd-plugins", NULL
);
198 p
= make_relative_prefix (plugin_program_name
,
208 while ((ent
= readdir (d
)))
213 full_name
= concat (p
, "/", ent
->d_name
, NULL
);
214 if (stat(full_name
, &s
) == 0 && S_ISREG (s
.st_mode
))
215 found
= try_load_plugin (full_name
);
230 static const bfd_target
*
231 bfd_plugin_object_p (bfd
*abfd
)
234 int t
= load_plugin ();
235 struct ld_plugin_input_file file
;
239 file
.name
= abfd
->filename
;
243 file
.fd
= fileno ((FILE *) abfd
->iostream
);
245 file
.filesize
= 0; /*FIXME*/
249 bfd
*archive
= abfd
->my_archive
;
250 BFD_ASSERT (archive
);
251 file
.fd
= fileno ((FILE *) archive
->iostream
);
252 file
.offset
= abfd
->origin
;
253 file
.filesize
= arelt_size (abfd
);
257 claim_file (&file
, &claimed
);
264 /* Copy any private info we understand from the input bfd
265 to the output bfd. */
268 bfd_plugin_bfd_copy_private_bfd_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
269 bfd
*obfd ATTRIBUTE_UNUSED
)
275 /* Copy any private info we understand from the input section
276 to the output section. */
279 bfd_plugin_bfd_copy_private_section_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
280 asection
*isection ATTRIBUTE_UNUSED
,
281 bfd
*obfd ATTRIBUTE_UNUSED
,
282 asection
*osection ATTRIBUTE_UNUSED
)
288 /* Copy any private info we understand from the input symbol
289 to the output symbol. */
292 bfd_plugin_bfd_copy_private_symbol_data (bfd
*ibfd ATTRIBUTE_UNUSED
,
293 asymbol
*isymbol ATTRIBUTE_UNUSED
,
294 bfd
*obfd ATTRIBUTE_UNUSED
,
295 asymbol
*osymbol ATTRIBUTE_UNUSED
)
302 bfd_plugin_bfd_print_private_bfd_data (bfd
*abfd ATTRIBUTE_UNUSED
, PTR ptr ATTRIBUTE_UNUSED
)
309 bfd_plugin_core_file_failing_command (bfd
*abfd ATTRIBUTE_UNUSED
)
316 bfd_plugin_core_file_failing_signal (bfd
*abfd ATTRIBUTE_UNUSED
)
323 bfd_plugin_core_file_pid (bfd
*abfd ATTRIBUTE_UNUSED
)
330 bfd_plugin_get_symtab_upper_bound (bfd
*abfd
)
332 struct plugin_data_struct
*plugin_data
= abfd
->tdata
.plugin_data
;
333 long nsyms
= plugin_data
->nsyms
;
335 BFD_ASSERT (nsyms
>= 0);
337 return ((nsyms
+ 1) * sizeof (asymbol
*));
341 convert_flags (const struct ld_plugin_symbol
*sym
)
352 return BSF_GLOBAL
| BSF_WEAK
;
361 bfd_plugin_canonicalize_symtab (bfd
*abfd
,
364 struct plugin_data_struct
*plugin_data
= abfd
->tdata
.plugin_data
;
365 long nsyms
= plugin_data
->nsyms
;
366 const struct ld_plugin_symbol
*syms
= plugin_data
->syms
;
367 static asection fake_section
;
368 static asection fake_common_section
;
371 fake_section
.name
= ".text";
372 fake_common_section
.flags
= SEC_IS_COMMON
;
374 for (i
= 0; i
< nsyms
; i
++)
376 asymbol
*s
= bfd_alloc (abfd
, sizeof (asymbol
));
382 s
->name
= syms
[i
].name
;
384 s
->flags
= convert_flags (&syms
[i
]);
388 s
->section
= &fake_common_section
;
392 s
->section
= bfd_und_section_ptr
;
396 s
->section
= &fake_section
;
402 s
->udata
.p
= (void *) &syms
[i
];
409 bfd_plugin_print_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
410 PTR afile ATTRIBUTE_UNUSED
,
411 asymbol
*symbol ATTRIBUTE_UNUSED
,
412 bfd_print_symbol_type how ATTRIBUTE_UNUSED
)
418 bfd_plugin_get_symbol_info (bfd
*abfd ATTRIBUTE_UNUSED
,
422 bfd_symbol_info (symbol
, ret
);
425 /* Make an empty symbol. */
428 bfd_plugin_make_empty_symbol (bfd
*abfd
)
430 asymbol
*new_symbol
= bfd_zalloc (abfd
, sizeof (asymbol
));
431 if (new_symbol
== NULL
)
433 new_symbol
->the_bfd
= abfd
;
438 bfd_plugin_sizeof_headers (bfd
*a ATTRIBUTE_UNUSED
,
439 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
446 bfd_plugin_mkobject (bfd
*abfd ATTRIBUTE_UNUSED
)
452 const bfd_target plugin_vec
=
454 "plugin", /* Name. */
455 bfd_target_unknown_flavour
,
456 BFD_ENDIAN_LITTLE
, /* Target byte order. */
457 BFD_ENDIAN_LITTLE
, /* Target headers byte order. */
458 (HAS_RELOC
| EXEC_P
| /* Object flags. */
459 HAS_LINENO
| HAS_DEBUG
|
460 HAS_SYMS
| HAS_LOCALS
| DYNAMIC
| WP_TEXT
| D_PAGED
),
461 (SEC_CODE
| SEC_DATA
| SEC_ROM
| SEC_HAS_CONTENTS
462 | SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* Section flags. */
463 0, /* symbol_leading_char. */
464 '/', /* ar_pad_char. */
465 15, /* ar_max_namelen. */
467 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
468 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
469 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* data */
470 bfd_getl64
, bfd_getl_signed_64
, bfd_putl64
,
471 bfd_getl32
, bfd_getl_signed_32
, bfd_putl32
,
472 bfd_getl16
, bfd_getl_signed_16
, bfd_putl16
, /* hdrs */
474 { /* bfd_check_format. */
477 bfd_generic_archive_p
,
480 { /* bfd_set_format. */
483 _bfd_generic_mkarchive
,
486 { /* bfd_write_contents. */
489 _bfd_write_archive_contents
,
493 BFD_JUMP_TABLE_GENERIC (bfd_plugin
),
494 BFD_JUMP_TABLE_COPY (bfd_plugin
),
495 BFD_JUMP_TABLE_CORE (bfd_plugin
),
496 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff
),
497 BFD_JUMP_TABLE_SYMBOLS (bfd_plugin
),
498 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs
),
499 BFD_JUMP_TABLE_WRITE (bfd_plugin
),
500 BFD_JUMP_TABLE_LINK (bfd_plugin
),
501 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic
),
505 NULL
/* backend_data. */
507 #endif /* BFD_SUPPORTS_PLUGIN */