Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Matsushita 10300 specific support for 32-bit ELF |
45d6a902 | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
010ac81f | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
24 | #include "elf-bfd.h" | |
25 | #include "elf/mn10300.h" | |
26 | ||
917583ad NC |
27 | static bfd_reloc_status_type mn10300_elf_final_link_relocate |
28 | PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, | |
03a12831 AO |
29 | bfd_vma, bfd_vma, bfd_vma, |
30 | struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *, | |
917583ad | 31 | asection *, int)); |
b34976b6 | 32 | static bfd_boolean mn10300_elf_relocate_section |
917583ad NC |
33 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
34 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 AM |
35 | static bfd_boolean mn10300_elf_relax_section |
36 | PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); | |
917583ad NC |
37 | static bfd_byte * mn10300_elf_get_relocated_section_contents |
38 | PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, | |
b34976b6 AM |
39 | bfd_byte *, bfd_boolean, asymbol **)); |
40 | static unsigned long elf_mn10300_mach | |
41 | PARAMS ((flagword)); | |
42 | void _bfd_mn10300_elf_final_write_processing | |
43 | PARAMS ((bfd *, bfd_boolean)); | |
44 | bfd_boolean _bfd_mn10300_elf_object_p | |
45 | PARAMS ((bfd *)); | |
46 | bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data | |
47 | PARAMS ((bfd *,bfd *)); | |
917583ad | 48 | |
03a12831 AO |
49 | /* The mn10300 linker needs to keep track of the number of relocs that |
50 | it decides to copy in check_relocs for each symbol. This is so | |
51 | that it can discard PC relative relocs if it doesn't need them when | |
52 | linking with -Bsymbolic. We store the information in a field | |
53 | extending the regular ELF linker hash table. */ | |
54 | ||
55 | /* This structure keeps track of the number of PC relative relocs we | |
56 | have copied for a given symbol. */ | |
57 | ||
58 | struct elf_mn10300_pcrel_relocs_copied | |
59 | { | |
60 | /* Next section. */ | |
61 | struct elf_mn10300_pcrel_relocs_copied * next; | |
62 | /* A section in dynobj. */ | |
63 | asection * section; | |
64 | /* Number of relocs copied in this section. */ | |
65 | bfd_size_type count; | |
66 | }; | |
67 | ||
010ac81f | 68 | struct elf32_mn10300_link_hash_entry { |
252b5132 RH |
69 | /* The basic elf link hash table entry. */ |
70 | struct elf_link_hash_entry root; | |
71 | ||
72 | /* For function symbols, the number of times this function is | |
73 | called directly (ie by name). */ | |
74 | unsigned int direct_calls; | |
75 | ||
76 | /* For function symbols, the size of this function's stack | |
77 | (if <= 255 bytes). We stuff this into "call" instructions | |
78 | to this target when it's valid and profitable to do so. | |
79 | ||
80 | This does not include stack allocated by movm! */ | |
81 | unsigned char stack_size; | |
82 | ||
83 | /* For function symbols, arguments (if any) for movm instruction | |
84 | in the prologue. We stuff this value into "call" instructions | |
85 | to the target when it's valid and profitable to do so. */ | |
86 | unsigned char movm_args; | |
87 | ||
88 | /* For funtion symbols, the amount of stack space that would be allocated | |
89 | by the movm instruction. This is redundant with movm_args, but we | |
90 | add it to the hash table to avoid computing it over and over. */ | |
91 | unsigned char movm_stack_size; | |
92 | ||
03a12831 AO |
93 | /* Number of PC relative relocs copied for this symbol. */ |
94 | struct elf_mn10300_pcrel_relocs_copied * pcrel_relocs_copied; | |
95 | ||
252b5132 RH |
96 | /* When set, convert all "call" instructions to this target into "calls" |
97 | instructions. */ | |
98 | #define MN10300_CONVERT_CALL_TO_CALLS 0x1 | |
99 | ||
100 | /* Used to mark functions which have had redundant parts of their | |
101 | prologue deleted. */ | |
102 | #define MN10300_DELETED_PROLOGUE_BYTES 0x2 | |
103 | unsigned char flags; | |
104 | }; | |
105 | ||
106 | /* We derive a hash table from the main elf linker hash table so | |
107 | we can store state variables and a secondary hash table without | |
108 | resorting to global variables. */ | |
010ac81f | 109 | struct elf32_mn10300_link_hash_table { |
252b5132 RH |
110 | /* The main hash table. */ |
111 | struct elf_link_hash_table root; | |
112 | ||
113 | /* A hash table for static functions. We could derive a new hash table | |
114 | instead of using the full elf32_mn10300_link_hash_table if we wanted | |
115 | to save some memory. */ | |
116 | struct elf32_mn10300_link_hash_table *static_hash_table; | |
117 | ||
118 | /* Random linker state flags. */ | |
119 | #define MN10300_HASH_ENTRIES_INITIALIZED 0x1 | |
120 | char flags; | |
121 | }; | |
122 | ||
123 | /* For MN10300 linker hash table. */ | |
124 | ||
125 | /* Get the MN10300 ELF linker hash table from a link_info structure. */ | |
126 | ||
127 | #define elf32_mn10300_hash_table(p) \ | |
128 | ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) | |
129 | ||
130 | #define elf32_mn10300_link_hash_traverse(table, func, info) \ | |
131 | (elf_link_hash_traverse \ | |
132 | (&(table)->root, \ | |
b34976b6 | 133 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
252b5132 RH |
134 | (info))) |
135 | ||
136 | static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc | |
137 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
138 | static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create | |
139 | PARAMS ((bfd *)); | |
e2d34d7d DJ |
140 | static void elf32_mn10300_link_hash_table_free |
141 | PARAMS ((struct bfd_link_hash_table *)); | |
252b5132 RH |
142 | |
143 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
144 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
145 | static void mn10300_info_to_howto | |
947216bf | 146 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 | 147 | static bfd_boolean mn10300_elf_check_relocs |
252b5132 RH |
148 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
149 | const Elf_Internal_Rela *)); | |
150 | static asection *mn10300_elf_gc_mark_hook | |
1e2f5b6e | 151 | PARAMS ((asection *, struct bfd_link_info *info, Elf_Internal_Rela *, |
252b5132 | 152 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 153 | static bfd_boolean mn10300_elf_relax_delete_bytes |
252b5132 | 154 | PARAMS ((bfd *, asection *, bfd_vma, int)); |
b34976b6 AM |
155 | static bfd_boolean mn10300_elf_symbol_address_p |
156 | PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma)); | |
157 | static bfd_boolean elf32_mn10300_finish_hash_table_entry | |
252b5132 RH |
158 | PARAMS ((struct bfd_hash_entry *, PTR)); |
159 | static void compute_function_info | |
160 | PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *, | |
161 | bfd_vma, unsigned char *)); | |
162 | ||
03a12831 AO |
163 | static bfd_boolean _bfd_mn10300_elf_create_got_section |
164 | PARAMS ((bfd *, struct bfd_link_info *)); | |
165 | static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections | |
166 | PARAMS ((bfd *, struct bfd_link_info *)); | |
167 | static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol | |
168 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
169 | static bfd_boolean _bfd_mn10300_elf_discard_copies | |
170 | PARAMS ((struct elf32_mn10300_link_hash_entry *, | |
171 | struct bfd_link_info *)); | |
172 | static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections | |
173 | PARAMS ((bfd *, struct bfd_link_info *)); | |
174 | static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol | |
175 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
176 | Elf_Internal_Sym *)); | |
177 | static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections | |
178 | PARAMS ((bfd *, struct bfd_link_info *)); | |
179 | ||
010ac81f | 180 | static reloc_howto_type elf_mn10300_howto_table[] = { |
252b5132 RH |
181 | /* Dummy relocation. Does nothing. */ |
182 | HOWTO (R_MN10300_NONE, | |
183 | 0, | |
184 | 2, | |
185 | 16, | |
b34976b6 | 186 | FALSE, |
252b5132 RH |
187 | 0, |
188 | complain_overflow_bitfield, | |
189 | bfd_elf_generic_reloc, | |
190 | "R_MN10300_NONE", | |
b34976b6 | 191 | FALSE, |
252b5132 RH |
192 | 0, |
193 | 0, | |
b34976b6 | 194 | FALSE), |
252b5132 RH |
195 | /* Standard 32 bit reloc. */ |
196 | HOWTO (R_MN10300_32, | |
197 | 0, | |
198 | 2, | |
199 | 32, | |
b34976b6 | 200 | FALSE, |
252b5132 RH |
201 | 0, |
202 | complain_overflow_bitfield, | |
203 | bfd_elf_generic_reloc, | |
204 | "R_MN10300_32", | |
b34976b6 | 205 | FALSE, |
252b5132 RH |
206 | 0xffffffff, |
207 | 0xffffffff, | |
b34976b6 | 208 | FALSE), |
252b5132 RH |
209 | /* Standard 16 bit reloc. */ |
210 | HOWTO (R_MN10300_16, | |
211 | 0, | |
212 | 1, | |
213 | 16, | |
b34976b6 | 214 | FALSE, |
252b5132 RH |
215 | 0, |
216 | complain_overflow_bitfield, | |
217 | bfd_elf_generic_reloc, | |
218 | "R_MN10300_16", | |
b34976b6 | 219 | FALSE, |
252b5132 RH |
220 | 0xffff, |
221 | 0xffff, | |
b34976b6 | 222 | FALSE), |
252b5132 RH |
223 | /* Standard 8 bit reloc. */ |
224 | HOWTO (R_MN10300_8, | |
225 | 0, | |
226 | 0, | |
227 | 8, | |
b34976b6 | 228 | FALSE, |
252b5132 RH |
229 | 0, |
230 | complain_overflow_bitfield, | |
231 | bfd_elf_generic_reloc, | |
232 | "R_MN10300_8", | |
b34976b6 | 233 | FALSE, |
252b5132 RH |
234 | 0xff, |
235 | 0xff, | |
b34976b6 | 236 | FALSE), |
252b5132 RH |
237 | /* Standard 32bit pc-relative reloc. */ |
238 | HOWTO (R_MN10300_PCREL32, | |
239 | 0, | |
240 | 2, | |
241 | 32, | |
b34976b6 | 242 | TRUE, |
252b5132 RH |
243 | 0, |
244 | complain_overflow_bitfield, | |
245 | bfd_elf_generic_reloc, | |
246 | "R_MN10300_PCREL32", | |
b34976b6 | 247 | FALSE, |
252b5132 RH |
248 | 0xffffffff, |
249 | 0xffffffff, | |
b34976b6 | 250 | TRUE), |
252b5132 RH |
251 | /* Standard 16bit pc-relative reloc. */ |
252 | HOWTO (R_MN10300_PCREL16, | |
253 | 0, | |
254 | 1, | |
255 | 16, | |
b34976b6 | 256 | TRUE, |
252b5132 RH |
257 | 0, |
258 | complain_overflow_bitfield, | |
259 | bfd_elf_generic_reloc, | |
260 | "R_MN10300_PCREL16", | |
b34976b6 | 261 | FALSE, |
252b5132 RH |
262 | 0xffff, |
263 | 0xffff, | |
b34976b6 | 264 | TRUE), |
252b5132 RH |
265 | /* Standard 8 pc-relative reloc. */ |
266 | HOWTO (R_MN10300_PCREL8, | |
267 | 0, | |
268 | 0, | |
269 | 8, | |
b34976b6 | 270 | TRUE, |
252b5132 RH |
271 | 0, |
272 | complain_overflow_bitfield, | |
273 | bfd_elf_generic_reloc, | |
274 | "R_MN10300_PCREL8", | |
b34976b6 | 275 | FALSE, |
252b5132 RH |
276 | 0xff, |
277 | 0xff, | |
b34976b6 | 278 | TRUE), |
252b5132 RH |
279 | |
280 | /* GNU extension to record C++ vtable hierarchy */ | |
281 | HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ | |
282 | 0, /* rightshift */ | |
283 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
284 | 0, /* bitsize */ | |
b34976b6 | 285 | FALSE, /* pc_relative */ |
252b5132 RH |
286 | 0, /* bitpos */ |
287 | complain_overflow_dont, /* complain_on_overflow */ | |
288 | NULL, /* special_function */ | |
289 | "R_MN10300_GNU_VTINHERIT", /* name */ | |
b34976b6 | 290 | FALSE, /* partial_inplace */ |
252b5132 RH |
291 | 0, /* src_mask */ |
292 | 0, /* dst_mask */ | |
b34976b6 | 293 | FALSE), /* pcrel_offset */ |
252b5132 RH |
294 | |
295 | /* GNU extension to record C++ vtable member usage */ | |
296 | HOWTO (R_MN10300_GNU_VTENTRY, /* type */ | |
297 | 0, /* rightshift */ | |
298 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
299 | 0, /* bitsize */ | |
b34976b6 | 300 | FALSE, /* pc_relative */ |
252b5132 RH |
301 | 0, /* bitpos */ |
302 | complain_overflow_dont, /* complain_on_overflow */ | |
303 | NULL, /* special_function */ | |
304 | "R_MN10300_GNU_VTENTRY", /* name */ | |
b34976b6 | 305 | FALSE, /* partial_inplace */ |
252b5132 RH |
306 | 0, /* src_mask */ |
307 | 0, /* dst_mask */ | |
b34976b6 | 308 | FALSE), /* pcrel_offset */ |
252b5132 RH |
309 | |
310 | /* Standard 24 bit reloc. */ | |
311 | HOWTO (R_MN10300_24, | |
312 | 0, | |
313 | 2, | |
314 | 24, | |
b34976b6 | 315 | FALSE, |
252b5132 RH |
316 | 0, |
317 | complain_overflow_bitfield, | |
318 | bfd_elf_generic_reloc, | |
319 | "R_MN10300_24", | |
b34976b6 | 320 | FALSE, |
252b5132 RH |
321 | 0xffffff, |
322 | 0xffffff, | |
b34976b6 | 323 | FALSE), |
03a12831 AO |
324 | HOWTO (R_MN10300_GOTPC32, /* type */ |
325 | 0, /* rightshift */ | |
326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 32, /* bitsize */ | |
328 | TRUE, /* pc_relative */ | |
329 | 0, /* bitpos */ | |
330 | complain_overflow_bitfield, /* complain_on_overflow */ | |
331 | bfd_elf_generic_reloc, /* */ | |
332 | "R_MN10300_GOTPC32", /* name */ | |
333 | FALSE, /* partial_inplace */ | |
334 | 0xffffffff, /* src_mask */ | |
335 | 0xffffffff, /* dst_mask */ | |
336 | TRUE), /* pcrel_offset */ | |
337 | ||
338 | HOWTO (R_MN10300_GOTPC16, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
342 | TRUE, /* pc_relative */ | |
343 | 0, /* bitpos */ | |
344 | complain_overflow_bitfield, /* complain_on_overflow */ | |
345 | bfd_elf_generic_reloc, /* */ | |
346 | "R_MN10300_GOTPC16", /* name */ | |
347 | FALSE, /* partial_inplace */ | |
348 | 0xffff, /* src_mask */ | |
349 | 0xffff, /* dst_mask */ | |
350 | TRUE), /* pcrel_offset */ | |
351 | ||
352 | HOWTO (R_MN10300_GOTOFF32, /* type */ | |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 32, /* bitsize */ | |
356 | FALSE, /* pc_relative */ | |
357 | 0, /* bitpos */ | |
358 | complain_overflow_bitfield, /* complain_on_overflow */ | |
359 | bfd_elf_generic_reloc, /* */ | |
360 | "R_MN10300_GOTOFF32", /* name */ | |
361 | FALSE, /* partial_inplace */ | |
362 | 0xffffffff, /* src_mask */ | |
363 | 0xffffffff, /* dst_mask */ | |
364 | FALSE), /* pcrel_offset */ | |
365 | ||
366 | HOWTO (R_MN10300_GOTOFF24, /* type */ | |
367 | 0, /* rightshift */ | |
368 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
369 | 24, /* bitsize */ | |
370 | FALSE, /* pc_relative */ | |
371 | 0, /* bitpos */ | |
372 | complain_overflow_bitfield, /* complain_on_overflow */ | |
373 | bfd_elf_generic_reloc, /* */ | |
374 | "R_MN10300_GOTOFF24", /* name */ | |
375 | FALSE, /* partial_inplace */ | |
376 | 0xffffff, /* src_mask */ | |
377 | 0xffffff, /* dst_mask */ | |
378 | FALSE), /* pcrel_offset */ | |
379 | ||
380 | HOWTO (R_MN10300_GOTOFF16, /* type */ | |
381 | 0, /* rightshift */ | |
382 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
383 | 16, /* bitsize */ | |
384 | FALSE, /* pc_relative */ | |
385 | 0, /* bitpos */ | |
386 | complain_overflow_bitfield, /* complain_on_overflow */ | |
387 | bfd_elf_generic_reloc, /* */ | |
388 | "R_MN10300_GOTOFF16", /* name */ | |
389 | FALSE, /* partial_inplace */ | |
390 | 0xffff, /* src_mask */ | |
391 | 0xffff, /* dst_mask */ | |
392 | FALSE), /* pcrel_offset */ | |
393 | ||
394 | HOWTO (R_MN10300_PLT32, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 32, /* bitsize */ | |
398 | TRUE, /* pc_relative */ | |
399 | 0, /* bitpos */ | |
400 | complain_overflow_bitfield, /* complain_on_overflow */ | |
401 | bfd_elf_generic_reloc, /* */ | |
402 | "R_MN10300_PLT32", /* name */ | |
403 | FALSE, /* partial_inplace */ | |
404 | 0xffffffff, /* src_mask */ | |
405 | 0xffffffff, /* dst_mask */ | |
406 | TRUE), /* pcrel_offset */ | |
407 | ||
408 | HOWTO (R_MN10300_PLT16, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
411 | 16, /* bitsize */ | |
412 | TRUE, /* pc_relative */ | |
413 | 0, /* bitpos */ | |
414 | complain_overflow_bitfield, /* complain_on_overflow */ | |
415 | bfd_elf_generic_reloc, /* */ | |
416 | "R_MN10300_PLT16", /* name */ | |
417 | FALSE, /* partial_inplace */ | |
418 | 0xffff, /* src_mask */ | |
419 | 0xffff, /* dst_mask */ | |
420 | TRUE), /* pcrel_offset */ | |
421 | ||
422 | HOWTO (R_MN10300_GOT32, /* type */ | |
423 | 0, /* rightshift */ | |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 32, /* bitsize */ | |
426 | FALSE, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_bitfield, /* complain_on_overflow */ | |
429 | bfd_elf_generic_reloc, /* */ | |
430 | "R_MN10300_GOT32", /* name */ | |
431 | FALSE, /* partial_inplace */ | |
432 | 0xffffffff, /* src_mask */ | |
433 | 0xffffffff, /* dst_mask */ | |
434 | FALSE), /* pcrel_offset */ | |
435 | ||
436 | HOWTO (R_MN10300_GOT24, /* type */ | |
437 | 0, /* rightshift */ | |
438 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 24, /* bitsize */ | |
440 | FALSE, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
442 | complain_overflow_bitfield, /* complain_on_overflow */ | |
443 | bfd_elf_generic_reloc, /* */ | |
444 | "R_MN10300_GOT24", /* name */ | |
445 | FALSE, /* partial_inplace */ | |
446 | 0xffffffff, /* src_mask */ | |
447 | 0xffffffff, /* dst_mask */ | |
448 | FALSE), /* pcrel_offset */ | |
449 | ||
450 | HOWTO (R_MN10300_GOT16, /* type */ | |
451 | 0, /* rightshift */ | |
452 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 16, /* bitsize */ | |
454 | FALSE, /* pc_relative */ | |
455 | 0, /* bitpos */ | |
456 | complain_overflow_bitfield, /* complain_on_overflow */ | |
457 | bfd_elf_generic_reloc, /* */ | |
458 | "R_MN10300_GOT16", /* name */ | |
459 | FALSE, /* partial_inplace */ | |
460 | 0xffffffff, /* src_mask */ | |
461 | 0xffffffff, /* dst_mask */ | |
462 | FALSE), /* pcrel_offset */ | |
463 | ||
464 | HOWTO (R_MN10300_COPY, /* type */ | |
465 | 0, /* rightshift */ | |
466 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
467 | 32, /* bitsize */ | |
468 | FALSE, /* pc_relative */ | |
469 | 0, /* bitpos */ | |
470 | complain_overflow_bitfield, /* complain_on_overflow */ | |
471 | bfd_elf_generic_reloc, /* */ | |
472 | "R_MN10300_COPY", /* name */ | |
473 | FALSE, /* partial_inplace */ | |
474 | 0xffffffff, /* src_mask */ | |
475 | 0xffffffff, /* dst_mask */ | |
476 | FALSE), /* pcrel_offset */ | |
477 | ||
478 | HOWTO (R_MN10300_GLOB_DAT, /* type */ | |
479 | 0, /* rightshift */ | |
480 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
481 | 32, /* bitsize */ | |
482 | FALSE, /* pc_relative */ | |
483 | 0, /* bitpos */ | |
484 | complain_overflow_bitfield, /* complain_on_overflow */ | |
485 | bfd_elf_generic_reloc, /* */ | |
486 | "R_MN10300_GLOB_DAT", /* name */ | |
487 | FALSE, /* partial_inplace */ | |
488 | 0xffffffff, /* src_mask */ | |
489 | 0xffffffff, /* dst_mask */ | |
490 | FALSE), /* pcrel_offset */ | |
491 | ||
492 | HOWTO (R_MN10300_JMP_SLOT, /* type */ | |
493 | 0, /* rightshift */ | |
494 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 32, /* bitsize */ | |
496 | FALSE, /* pc_relative */ | |
497 | 0, /* bitpos */ | |
498 | complain_overflow_bitfield, /* complain_on_overflow */ | |
499 | bfd_elf_generic_reloc, /* */ | |
500 | "R_MN10300_JMP_SLOT", /* name */ | |
501 | FALSE, /* partial_inplace */ | |
502 | 0xffffffff, /* src_mask */ | |
503 | 0xffffffff, /* dst_mask */ | |
504 | FALSE), /* pcrel_offset */ | |
505 | ||
506 | HOWTO (R_MN10300_RELATIVE, /* type */ | |
507 | 0, /* rightshift */ | |
508 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
509 | 32, /* bitsize */ | |
510 | FALSE, /* pc_relative */ | |
511 | 0, /* bitpos */ | |
512 | complain_overflow_bitfield, /* complain_on_overflow */ | |
513 | bfd_elf_generic_reloc, /* */ | |
514 | "R_MN10300_RELATIVE", /* name */ | |
515 | FALSE, /* partial_inplace */ | |
516 | 0xffffffff, /* src_mask */ | |
517 | 0xffffffff, /* dst_mask */ | |
518 | FALSE), /* pcrel_offset */ | |
519 | ||
252b5132 RH |
520 | }; |
521 | ||
010ac81f | 522 | struct mn10300_reloc_map { |
252b5132 RH |
523 | bfd_reloc_code_real_type bfd_reloc_val; |
524 | unsigned char elf_reloc_val; | |
525 | }; | |
526 | ||
010ac81f | 527 | static const struct mn10300_reloc_map mn10300_reloc_map[] = { |
252b5132 RH |
528 | { BFD_RELOC_NONE, R_MN10300_NONE, }, |
529 | { BFD_RELOC_32, R_MN10300_32, }, | |
530 | { BFD_RELOC_16, R_MN10300_16, }, | |
531 | { BFD_RELOC_8, R_MN10300_8, }, | |
532 | { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, | |
533 | { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, | |
534 | { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, | |
535 | { BFD_RELOC_24, R_MN10300_24, }, | |
536 | { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, | |
537 | { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, | |
03a12831 AO |
538 | { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, |
539 | { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, | |
540 | { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, | |
541 | { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, | |
542 | { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, | |
543 | { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, | |
544 | { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, | |
545 | { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, | |
546 | { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, | |
547 | { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, | |
548 | { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, | |
549 | { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, | |
550 | { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, | |
551 | { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, | |
252b5132 RH |
552 | }; |
553 | ||
03a12831 AO |
554 | /* Create the GOT section. */ |
555 | ||
556 | static bfd_boolean | |
557 | _bfd_mn10300_elf_create_got_section (abfd, info) | |
558 | bfd * abfd; | |
559 | struct bfd_link_info * info; | |
560 | { | |
561 | flagword flags; | |
562 | flagword pltflags; | |
563 | asection * s; | |
564 | struct elf_link_hash_entry * h; | |
9c5bfbb7 | 565 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
566 | int ptralign; |
567 | ||
568 | /* This function may be called more than once. */ | |
569 | if (bfd_get_section_by_name (abfd, ".got") != NULL) | |
570 | return TRUE; | |
571 | ||
572 | switch (bed->s->arch_size) | |
573 | { | |
574 | case 32: | |
575 | ptralign = 2; | |
576 | break; | |
577 | ||
578 | case 64: | |
579 | ptralign = 3; | |
580 | break; | |
581 | ||
582 | default: | |
583 | bfd_set_error (bfd_error_bad_value); | |
584 | return FALSE; | |
585 | } | |
586 | ||
587 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
588 | | SEC_LINKER_CREATED); | |
589 | ||
590 | pltflags = flags; | |
591 | pltflags |= SEC_CODE; | |
592 | if (bed->plt_not_loaded) | |
593 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
594 | if (bed->plt_readonly) | |
595 | pltflags |= SEC_READONLY; | |
596 | ||
597 | s = bfd_make_section (abfd, ".plt"); | |
598 | if (s == NULL | |
599 | || ! bfd_set_section_flags (abfd, s, pltflags) | |
600 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
601 | return FALSE; | |
602 | ||
603 | if (bed->want_plt_sym) | |
604 | { | |
605 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
606 | .plt section. */ | |
607 | struct elf_link_hash_entry *h = NULL; | |
608 | if (! (_bfd_generic_link_add_one_symbol | |
609 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
610 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
611 | get_elf_backend_data (abfd)->collect, | |
612 | (struct bfd_link_hash_entry **) &h))) | |
613 | return FALSE; | |
614 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
615 | h->type = STT_OBJECT; | |
616 | ||
617 | if (info->shared | |
618 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
619 | return FALSE; | |
620 | } | |
621 | ||
622 | s = bfd_make_section (abfd, ".got"); | |
623 | if (s == NULL | |
624 | || ! bfd_set_section_flags (abfd, s, flags) | |
625 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
626 | return FALSE; | |
627 | ||
628 | if (bed->want_got_plt) | |
629 | { | |
630 | s = bfd_make_section (abfd, ".got.plt"); | |
631 | if (s == NULL | |
632 | || ! bfd_set_section_flags (abfd, s, flags) | |
633 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
634 | return FALSE; | |
635 | } | |
636 | ||
637 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
638 | (or .got.plt) section. We don't do this in the linker script | |
639 | because we don't want to define the symbol if we are not creating | |
640 | a global offset table. */ | |
641 | h = NULL; | |
642 | if (!(_bfd_generic_link_add_one_symbol | |
643 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, | |
644 | bed->got_symbol_offset, (const char *) NULL, FALSE, | |
645 | bed->collect, (struct bfd_link_hash_entry **) &h))) | |
646 | return FALSE; | |
647 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
648 | h->type = STT_OBJECT; | |
649 | ||
650 | if (info->shared | |
651 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
652 | return FALSE; | |
653 | ||
654 | elf_hash_table (info)->hgot = h; | |
655 | ||
656 | /* The first bit of the global offset table is the header. */ | |
657 | s->_raw_size += bed->got_header_size + bed->got_symbol_offset; | |
658 | ||
659 | return TRUE; | |
660 | } | |
661 | ||
252b5132 RH |
662 | static reloc_howto_type * |
663 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
5f771d47 | 664 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
665 | bfd_reloc_code_real_type code; |
666 | { | |
667 | unsigned int i; | |
668 | ||
669 | for (i = 0; | |
670 | i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map); | |
671 | i++) | |
672 | { | |
673 | if (mn10300_reloc_map[i].bfd_reloc_val == code) | |
674 | return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; | |
675 | } | |
676 | ||
677 | return NULL; | |
678 | } | |
679 | ||
680 | /* Set the howto pointer for an MN10300 ELF reloc. */ | |
681 | ||
682 | static void | |
683 | mn10300_info_to_howto (abfd, cache_ptr, dst) | |
5f771d47 | 684 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 685 | arelent *cache_ptr; |
947216bf | 686 | Elf_Internal_Rela *dst; |
252b5132 RH |
687 | { |
688 | unsigned int r_type; | |
689 | ||
690 | r_type = ELF32_R_TYPE (dst->r_info); | |
691 | BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX); | |
692 | cache_ptr->howto = &elf_mn10300_howto_table[r_type]; | |
693 | } | |
694 | ||
695 | /* Look through the relocs for a section during the first phase. | |
696 | Since we don't do .gots or .plts, we just need to consider the | |
697 | virtual table relocs for gc. */ | |
698 | ||
b34976b6 | 699 | static bfd_boolean |
252b5132 RH |
700 | mn10300_elf_check_relocs (abfd, info, sec, relocs) |
701 | bfd *abfd; | |
702 | struct bfd_link_info *info; | |
703 | asection *sec; | |
704 | const Elf_Internal_Rela *relocs; | |
705 | { | |
706 | Elf_Internal_Shdr *symtab_hdr; | |
707 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
708 | const Elf_Internal_Rela *rel; | |
709 | const Elf_Internal_Rela *rel_end; | |
03a12831 AO |
710 | bfd * dynobj; |
711 | bfd_vma * local_got_offsets; | |
712 | asection * sgot; | |
713 | asection * srelgot; | |
714 | asection * sreloc; | |
715 | ||
716 | sgot = NULL; | |
717 | srelgot = NULL; | |
718 | sreloc = NULL; | |
252b5132 | 719 | |
1049f94e | 720 | if (info->relocatable) |
b34976b6 | 721 | return TRUE; |
252b5132 RH |
722 | |
723 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
724 | sym_hashes = elf_sym_hashes (abfd); | |
a7c10850 | 725 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
252b5132 RH |
726 | if (!elf_bad_symtab (abfd)) |
727 | sym_hashes_end -= symtab_hdr->sh_info; | |
728 | ||
03a12831 AO |
729 | dynobj = elf_hash_table (info)->dynobj; |
730 | local_got_offsets = elf_local_got_offsets (abfd); | |
252b5132 RH |
731 | rel_end = relocs + sec->reloc_count; |
732 | for (rel = relocs; rel < rel_end; rel++) | |
733 | { | |
734 | struct elf_link_hash_entry *h; | |
735 | unsigned long r_symndx; | |
736 | ||
737 | r_symndx = ELF32_R_SYM (rel->r_info); | |
738 | if (r_symndx < symtab_hdr->sh_info) | |
739 | h = NULL; | |
740 | else | |
741 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
742 | ||
03a12831 AO |
743 | /* Some relocs require a global offset table. */ |
744 | if (dynobj == NULL) | |
745 | { | |
746 | switch (ELF32_R_TYPE (rel->r_info)) | |
747 | { | |
748 | case R_MN10300_GOT32: | |
749 | case R_MN10300_GOT24: | |
750 | case R_MN10300_GOT16: | |
751 | case R_MN10300_GOTOFF32: | |
752 | case R_MN10300_GOTOFF24: | |
753 | case R_MN10300_GOTOFF16: | |
754 | case R_MN10300_GOTPC32: | |
755 | case R_MN10300_GOTPC16: | |
756 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
757 | if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) | |
758 | return FALSE; | |
759 | break; | |
760 | ||
761 | default: | |
762 | break; | |
763 | } | |
764 | } | |
765 | ||
252b5132 RH |
766 | switch (ELF32_R_TYPE (rel->r_info)) |
767 | { | |
768 | /* This relocation describes the C++ object vtable hierarchy. | |
769 | Reconstruct it for later use during GC. */ | |
770 | case R_MN10300_GNU_VTINHERIT: | |
771 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 772 | return FALSE; |
252b5132 RH |
773 | break; |
774 | ||
775 | /* This relocation describes which C++ vtable entries are actually | |
776 | used. Record for later use during GC. */ | |
777 | case R_MN10300_GNU_VTENTRY: | |
778 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 779 | return FALSE; |
252b5132 | 780 | break; |
03a12831 AO |
781 | case R_MN10300_GOT32: |
782 | case R_MN10300_GOT24: | |
783 | case R_MN10300_GOT16: | |
784 | /* This symbol requires a global offset table entry. */ | |
785 | ||
786 | if (sgot == NULL) | |
787 | { | |
788 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
789 | BFD_ASSERT (sgot != NULL); | |
790 | } | |
791 | ||
792 | if (srelgot == NULL | |
793 | && (h != NULL || info->shared)) | |
794 | { | |
795 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
796 | if (srelgot == NULL) | |
797 | { | |
798 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
799 | if (srelgot == NULL | |
800 | || ! bfd_set_section_flags (dynobj, srelgot, | |
801 | (SEC_ALLOC | |
802 | | SEC_LOAD | |
803 | | SEC_HAS_CONTENTS | |
804 | | SEC_IN_MEMORY | |
805 | | SEC_LINKER_CREATED | |
806 | | SEC_READONLY)) | |
807 | || ! bfd_set_section_alignment (dynobj, srelgot, 2)) | |
808 | return FALSE; | |
809 | } | |
810 | } | |
811 | ||
812 | if (h != NULL) | |
813 | { | |
814 | if (h->got.offset != (bfd_vma) -1) | |
815 | /* We have already allocated space in the .got. */ | |
816 | break; | |
817 | ||
818 | h->got.offset = sgot->_raw_size; | |
819 | ||
820 | /* Make sure this symbol is output as a dynamic symbol. */ | |
821 | if (h->dynindx == -1) | |
822 | { | |
823 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
824 | return FALSE; | |
825 | } | |
826 | ||
827 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
828 | } | |
829 | else | |
830 | { | |
831 | /* This is a global offset table entry for a local | |
832 | symbol. */ | |
833 | if (local_got_offsets == NULL) | |
834 | { | |
835 | size_t size; | |
836 | unsigned int i; | |
837 | ||
838 | size = symtab_hdr->sh_info * sizeof (bfd_vma); | |
839 | local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); | |
840 | ||
841 | if (local_got_offsets == NULL) | |
842 | return FALSE; | |
843 | elf_local_got_offsets (abfd) = local_got_offsets; | |
844 | ||
845 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
846 | local_got_offsets[i] = (bfd_vma) -1; | |
847 | } | |
848 | ||
849 | if (local_got_offsets[r_symndx] != (bfd_vma) -1) | |
850 | /* We have already allocated space in the .got. */ | |
851 | break; | |
852 | ||
853 | local_got_offsets[r_symndx] = sgot->_raw_size; | |
854 | ||
855 | if (info->shared) | |
856 | /* If we are generating a shared object, we need to | |
857 | output a R_MN10300_RELATIVE reloc so that the dynamic | |
858 | linker can adjust this GOT entry. */ | |
859 | srelgot->_raw_size += sizeof (Elf32_External_Rela); | |
860 | } | |
861 | ||
862 | sgot->_raw_size += 4; | |
863 | ||
864 | break; | |
865 | ||
866 | case R_MN10300_PLT32: | |
867 | case R_MN10300_PLT16: | |
868 | /* This symbol requires a procedure linkage table entry. We | |
869 | actually build the entry in adjust_dynamic_symbol, | |
870 | because this might be a case of linking PIC code which is | |
871 | never referenced by a dynamic object, in which case we | |
872 | don't need to generate a procedure linkage table entry | |
873 | after all. */ | |
874 | ||
875 | /* If this is a local symbol, we resolve it directly without | |
876 | creating a procedure linkage table entry. */ | |
877 | if (h == NULL) | |
878 | continue; | |
879 | ||
880 | if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL | |
881 | || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) | |
882 | break; | |
883 | ||
884 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
885 | ||
886 | break; | |
887 | ||
888 | case R_MN10300_32: | |
889 | case R_MN10300_24: | |
890 | case R_MN10300_16: | |
891 | case R_MN10300_8: | |
892 | case R_MN10300_PCREL32: | |
893 | case R_MN10300_PCREL16: | |
894 | case R_MN10300_PCREL8: | |
895 | if (h != NULL) | |
896 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
897 | ||
898 | /* If we are creating a shared library, and this is a reloc | |
899 | against a global symbol, or a non PC relative reloc | |
900 | against a local symbol, then we need to copy the reloc | |
901 | into the shared library. However, if we are linking with | |
902 | -Bsymbolic, we do not need to copy a reloc against a | |
903 | global symbol which is defined in an object we are | |
904 | including in the link (i.e., DEF_REGULAR is set). At | |
905 | this point we have not seen all the input files, so it is | |
906 | possible that DEF_REGULAR is not set now but will be set | |
907 | later (it is never cleared). We account for that | |
908 | possibility below by storing information in the | |
909 | pcrel_relocs_copied field of the hash table entry. */ | |
910 | if (info->shared | |
911 | && (sec->flags & SEC_ALLOC) != 0 | |
912 | && (! (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)] | |
913 | .pc_relative) | |
914 | || (h != NULL | |
915 | && (! info->symbolic | |
916 | || h->root.type == bfd_link_hash_defweak | |
917 | || (h->elf_link_hash_flags | |
918 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
919 | { | |
920 | /* When creating a shared object, we must copy these | |
921 | reloc types into the output file. We create a reloc | |
922 | section in dynobj and make room for this reloc. */ | |
923 | if (sreloc == NULL) | |
924 | { | |
925 | const char * name; | |
926 | ||
927 | name = (bfd_elf_string_from_elf_section | |
928 | (abfd, | |
929 | elf_elfheader (abfd)->e_shstrndx, | |
930 | elf_section_data (sec)->rel_hdr.sh_name)); | |
931 | if (name == NULL) | |
932 | return FALSE; | |
933 | ||
934 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
935 | && strcmp (bfd_get_section_name (abfd, sec), | |
936 | name + 5) == 0); | |
937 | ||
938 | sreloc = bfd_get_section_by_name (dynobj, name); | |
939 | if (sreloc == NULL) | |
940 | { | |
941 | flagword flags; | |
942 | ||
943 | sreloc = bfd_make_section (dynobj, name); | |
944 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
945 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
946 | if ((sec->flags & SEC_ALLOC) != 0) | |
947 | flags |= SEC_ALLOC | SEC_LOAD; | |
948 | if (sreloc == NULL | |
949 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
950 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
951 | return FALSE; | |
952 | } | |
953 | } | |
954 | ||
955 | sreloc->_raw_size += sizeof (Elf32_External_Rela); | |
956 | ||
957 | /* If we are linking with -Bsymbolic, and this is a | |
958 | global symbol, we count the number of PC relative | |
959 | relocations we have entered for this symbol, so that | |
960 | we can discard them again if the symbol is later | |
961 | defined by a regular object. Note that this function | |
962 | is only called if we are using an elf_sh linker | |
963 | hash table, which means that h is really a pointer to | |
964 | an elf32_mn10300_link_hash_entry. */ | |
965 | if (h != NULL | |
966 | && (elf_mn10300_howto_table[ELF32_R_TYPE (rel->r_info)] | |
967 | .pc_relative)) | |
968 | { | |
969 | struct elf32_mn10300_link_hash_entry *eh; | |
970 | struct elf_mn10300_pcrel_relocs_copied *p; | |
971 | ||
972 | eh = (struct elf32_mn10300_link_hash_entry *) h; | |
973 | ||
974 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
975 | if (p->section == sreloc) | |
976 | break; | |
977 | ||
978 | if (p == NULL) | |
979 | { | |
980 | p = ((struct elf_mn10300_pcrel_relocs_copied *) | |
981 | bfd_alloc (dynobj, sizeof *p)); | |
982 | if (p == NULL) | |
983 | return FALSE; | |
984 | ||
985 | p->next = eh->pcrel_relocs_copied; | |
986 | eh->pcrel_relocs_copied = p; | |
987 | p->section = sreloc; | |
988 | p->count = 0; | |
989 | } | |
990 | ||
991 | ++p->count; | |
992 | } | |
993 | } | |
994 | ||
995 | break; | |
252b5132 RH |
996 | } |
997 | } | |
998 | ||
b34976b6 | 999 | return TRUE; |
252b5132 RH |
1000 | } |
1001 | ||
1002 | /* Return the section that should be marked against GC for a given | |
1003 | relocation. */ | |
1004 | ||
1005 | static asection * | |
1e2f5b6e AM |
1006 | mn10300_elf_gc_mark_hook (sec, info, rel, h, sym) |
1007 | asection *sec; | |
5f771d47 | 1008 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1009 | Elf_Internal_Rela *rel; |
1010 | struct elf_link_hash_entry *h; | |
1011 | Elf_Internal_Sym *sym; | |
1012 | { | |
1013 | if (h != NULL) | |
1014 | { | |
1015 | switch (ELF32_R_TYPE (rel->r_info)) | |
1016 | { | |
1017 | case R_MN10300_GNU_VTINHERIT: | |
1018 | case R_MN10300_GNU_VTENTRY: | |
1019 | break; | |
1020 | ||
1021 | default: | |
1022 | switch (h->root.type) | |
1023 | { | |
1024 | case bfd_link_hash_defined: | |
1025 | case bfd_link_hash_defweak: | |
1026 | return h->root.u.def.section; | |
1027 | ||
1028 | case bfd_link_hash_common: | |
1029 | return h->root.u.c.p->section; | |
e049a0de ILT |
1030 | |
1031 | default: | |
1032 | break; | |
252b5132 RH |
1033 | } |
1034 | } | |
1035 | } | |
1036 | else | |
1e2f5b6e | 1037 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1038 | |
1039 | return NULL; | |
1040 | } | |
1041 | ||
1042 | /* Perform a relocation as part of a final link. */ | |
1043 | static bfd_reloc_status_type | |
1044 | mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, | |
1045 | input_section, contents, offset, value, | |
03a12831 | 1046 | addend, h, symndx, info, sym_sec, is_local) |
252b5132 RH |
1047 | reloc_howto_type *howto; |
1048 | bfd *input_bfd; | |
5f771d47 | 1049 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1050 | asection *input_section; |
1051 | bfd_byte *contents; | |
1052 | bfd_vma offset; | |
1053 | bfd_vma value; | |
1054 | bfd_vma addend; | |
03a12831 AO |
1055 | struct elf_link_hash_entry * h; |
1056 | unsigned long symndx; | |
5f771d47 ILT |
1057 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
1058 | asection *sym_sec ATTRIBUTE_UNUSED; | |
1059 | int is_local ATTRIBUTE_UNUSED; | |
252b5132 RH |
1060 | { |
1061 | unsigned long r_type = howto->type; | |
1062 | bfd_byte *hit_data = contents + offset; | |
03a12831 AO |
1063 | bfd * dynobj; |
1064 | bfd_vma * local_got_offsets; | |
1065 | asection * sgot; | |
1066 | asection * splt; | |
1067 | asection * sreloc; | |
1068 | ||
1069 | dynobj = elf_hash_table (info)->dynobj; | |
1070 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1071 | ||
1072 | sgot = NULL; | |
1073 | splt = NULL; | |
1074 | sreloc = NULL; | |
252b5132 RH |
1075 | |
1076 | switch (r_type) | |
1077 | { | |
1078 | case R_MN10300_NONE: | |
1079 | return bfd_reloc_ok; | |
1080 | ||
1081 | case R_MN10300_32: | |
03a12831 AO |
1082 | if (info->shared |
1083 | && (input_section->flags & SEC_ALLOC) != 0) | |
1084 | { | |
1085 | Elf_Internal_Rela outrel; | |
1086 | bfd_boolean skip, relocate; | |
1087 | ||
1088 | /* When generating a shared object, these relocations are | |
1089 | copied into the output file to be resolved at run | |
1090 | time. */ | |
1091 | if (sreloc == NULL) | |
1092 | { | |
1093 | const char * name; | |
1094 | ||
1095 | name = (bfd_elf_string_from_elf_section | |
1096 | (input_bfd, | |
1097 | elf_elfheader (input_bfd)->e_shstrndx, | |
1098 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1099 | if (name == NULL) | |
1100 | return FALSE; | |
1101 | ||
1102 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1103 | && strcmp (bfd_get_section_name (input_bfd, | |
1104 | input_section), | |
1105 | name + 5) == 0); | |
1106 | ||
1107 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1108 | BFD_ASSERT (sreloc != NULL); | |
1109 | } | |
1110 | ||
1111 | skip = FALSE; | |
1112 | ||
1113 | if (elf_section_data (input_section)->sec_info == NULL | |
1114 | || (input_section->sec_info_type != ELF_INFO_TYPE_STABS)) | |
1115 | outrel.r_offset = offset; | |
1116 | else | |
1117 | { | |
1118 | bfd_vma off; | |
1119 | ||
1120 | off = (_bfd_stab_section_offset | |
1121 | (output_bfd, & elf_hash_table (info)->stab_info, | |
1122 | input_section, | |
1123 | & elf_section_data (input_section)->sec_info, | |
1124 | offset)); | |
1125 | if (off == (bfd_vma) -1) | |
1126 | skip = TRUE; | |
1127 | outrel.r_offset = off; | |
1128 | } | |
1129 | ||
1130 | outrel.r_offset += (input_section->output_section->vma | |
1131 | + input_section->output_offset); | |
1132 | ||
1133 | if (skip) | |
1134 | { | |
1135 | memset (&outrel, 0, sizeof outrel); | |
1136 | relocate = FALSE; | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | /* h->dynindx may be -1 if this symbol was marked to | |
1141 | become local. */ | |
1142 | if (h == NULL | |
1143 | || ((info->symbolic || h->dynindx == -1) | |
1144 | && (h->elf_link_hash_flags | |
1145 | & ELF_LINK_HASH_DEF_REGULAR) != 0)) | |
1146 | { | |
1147 | relocate = TRUE; | |
1148 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1149 | outrel.r_addend = value + addend; | |
1150 | } | |
1151 | else | |
1152 | { | |
1153 | BFD_ASSERT (h->dynindx != -1); | |
1154 | relocate = FALSE; | |
1155 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); | |
1156 | outrel.r_addend = value + addend; | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1161 | (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) |
1162 | + sreloc->reloc_count)); | |
03a12831 AO |
1163 | ++sreloc->reloc_count; |
1164 | ||
1165 | /* If this reloc is against an external symbol, we do | |
1166 | not want to fiddle with the addend. Otherwise, we | |
1167 | need to include the symbol value so that it becomes | |
1168 | an addend for the dynamic reloc. */ | |
1169 | if (! relocate) | |
1170 | return bfd_reloc_ok; | |
1171 | } | |
252b5132 RH |
1172 | value += addend; |
1173 | bfd_put_32 (input_bfd, value, hit_data); | |
1174 | return bfd_reloc_ok; | |
1175 | ||
1176 | case R_MN10300_24: | |
1177 | value += addend; | |
1178 | ||
010ac81f | 1179 | if ((long) value > 0x7fffff || (long) value < -0x800000) |
252b5132 RH |
1180 | return bfd_reloc_overflow; |
1181 | ||
1182 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1183 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1184 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1185 | return bfd_reloc_ok; | |
1186 | ||
1187 | case R_MN10300_16: | |
1188 | value += addend; | |
1189 | ||
010ac81f | 1190 | if ((long) value > 0x7fff || (long) value < -0x8000) |
252b5132 RH |
1191 | return bfd_reloc_overflow; |
1192 | ||
1193 | bfd_put_16 (input_bfd, value, hit_data); | |
1194 | return bfd_reloc_ok; | |
1195 | ||
1196 | case R_MN10300_8: | |
1197 | value += addend; | |
1198 | ||
010ac81f | 1199 | if ((long) value > 0x7f || (long) value < -0x80) |
252b5132 RH |
1200 | return bfd_reloc_overflow; |
1201 | ||
1202 | bfd_put_8 (input_bfd, value, hit_data); | |
1203 | return bfd_reloc_ok; | |
1204 | ||
1205 | case R_MN10300_PCREL8: | |
1206 | value -= (input_section->output_section->vma | |
1207 | + input_section->output_offset); | |
1208 | value -= offset; | |
1209 | value += addend; | |
1210 | ||
010ac81f | 1211 | if ((long) value > 0xff || (long) value < -0x100) |
252b5132 RH |
1212 | return bfd_reloc_overflow; |
1213 | ||
1214 | bfd_put_8 (input_bfd, value, hit_data); | |
1215 | return bfd_reloc_ok; | |
1216 | ||
1217 | case R_MN10300_PCREL16: | |
1218 | value -= (input_section->output_section->vma | |
1219 | + input_section->output_offset); | |
1220 | value -= offset; | |
1221 | value += addend; | |
1222 | ||
010ac81f | 1223 | if ((long) value > 0xffff || (long) value < -0x10000) |
252b5132 RH |
1224 | return bfd_reloc_overflow; |
1225 | ||
1226 | bfd_put_16 (input_bfd, value, hit_data); | |
1227 | return bfd_reloc_ok; | |
1228 | ||
1229 | case R_MN10300_PCREL32: | |
03a12831 AO |
1230 | if (info->shared |
1231 | && (input_section->flags & SEC_ALLOC) != 0 | |
1232 | && h != NULL | |
1233 | && h->dynindx != -1 | |
1234 | && (! info->symbolic | |
1235 | || (h->elf_link_hash_flags | |
1236 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1237 | { | |
1238 | Elf_Internal_Rela outrel; | |
1239 | bfd_boolean skip; | |
1240 | ||
1241 | /* When generating a shared object, these relocations | |
1242 | are copied into the output file to be resolved at run | |
1243 | time. */ | |
1244 | ||
1245 | if (sreloc == NULL) | |
1246 | { | |
1247 | const char * name; | |
1248 | ||
1249 | name = (bfd_elf_string_from_elf_section | |
1250 | (input_bfd, | |
1251 | elf_elfheader (input_bfd)->e_shstrndx, | |
1252 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1253 | if (name == NULL) | |
1254 | return FALSE; | |
1255 | ||
1256 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1257 | && strcmp (bfd_get_section_name (input_bfd, | |
1258 | input_section), | |
1259 | name + 5) == 0); | |
1260 | ||
1261 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1262 | BFD_ASSERT (sreloc != NULL); | |
1263 | } | |
1264 | ||
1265 | skip = FALSE; | |
1266 | ||
1267 | if (elf_section_data (input_section)->sec_info == NULL | |
1268 | || (input_section->sec_info_type != ELF_INFO_TYPE_STABS)) | |
1269 | outrel.r_offset = offset; | |
1270 | else | |
1271 | { | |
1272 | bfd_vma off; | |
1273 | ||
1274 | off = (_bfd_stab_section_offset | |
1275 | (output_bfd, & elf_hash_table (info)->stab_info, | |
1276 | input_section, | |
1277 | & elf_section_data (input_section)->sec_info, | |
1278 | offset)); | |
1279 | if (off == (bfd_vma) -1) | |
1280 | skip = TRUE; | |
1281 | outrel.r_offset = off; | |
1282 | } | |
1283 | ||
1284 | outrel.r_offset += (input_section->output_section->vma | |
1285 | + input_section->output_offset); | |
1286 | ||
1287 | if (skip) | |
1288 | memset (&outrel, 0, sizeof outrel); | |
1289 | else | |
1290 | { | |
1291 | BFD_ASSERT (h != NULL && h->dynindx != -1); | |
1292 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_PCREL32); | |
1293 | outrel.r_addend = addend; | |
1294 | } | |
1295 | ||
1296 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1297 | (bfd_byte *) (((Elf32_External_Rela *) |
1298 | sreloc->contents) | |
1299 | + sreloc->reloc_count)); | |
03a12831 AO |
1300 | ++sreloc->reloc_count; |
1301 | ||
1302 | return bfd_reloc_ok; | |
1303 | } | |
1304 | ||
252b5132 RH |
1305 | value -= (input_section->output_section->vma |
1306 | + input_section->output_offset); | |
1307 | value -= offset; | |
1308 | value += addend; | |
1309 | ||
1310 | bfd_put_32 (input_bfd, value, hit_data); | |
1311 | return bfd_reloc_ok; | |
1312 | ||
1313 | case R_MN10300_GNU_VTINHERIT: | |
1314 | case R_MN10300_GNU_VTENTRY: | |
1315 | return bfd_reloc_ok; | |
1316 | ||
03a12831 AO |
1317 | case R_MN10300_GOTPC32: |
1318 | /* Use global offset table as symbol value. */ | |
1319 | ||
1320 | value = bfd_get_section_by_name (dynobj, | |
1321 | ".got")->output_section->vma; | |
1322 | value -= (input_section->output_section->vma | |
1323 | + input_section->output_offset); | |
1324 | value -= offset; | |
1325 | value += addend; | |
1326 | ||
1327 | bfd_put_32 (input_bfd, value, hit_data); | |
1328 | return bfd_reloc_ok; | |
1329 | ||
1330 | case R_MN10300_GOTPC16: | |
1331 | /* Use global offset table as symbol value. */ | |
1332 | ||
1333 | value = bfd_get_section_by_name (dynobj, | |
1334 | ".got")->output_section->vma; | |
1335 | value -= (input_section->output_section->vma | |
1336 | + input_section->output_offset); | |
1337 | value -= offset; | |
1338 | value += addend; | |
1339 | ||
1340 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1341 | return bfd_reloc_overflow; | |
1342 | ||
1343 | bfd_put_16 (input_bfd, value, hit_data); | |
1344 | return bfd_reloc_ok; | |
1345 | ||
1346 | case R_MN10300_GOTOFF32: | |
1347 | value -= bfd_get_section_by_name (dynobj, | |
1348 | ".got")->output_section->vma; | |
1349 | value += addend; | |
1350 | ||
1351 | bfd_put_32 (input_bfd, value, hit_data); | |
1352 | return bfd_reloc_ok; | |
1353 | ||
1354 | case R_MN10300_GOTOFF24: | |
1355 | value -= bfd_get_section_by_name (dynobj, | |
1356 | ".got")->output_section->vma; | |
1357 | value += addend; | |
1358 | ||
1359 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1360 | return bfd_reloc_overflow; | |
1361 | ||
1362 | bfd_put_8 (input_bfd, value, hit_data); | |
1363 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1364 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1365 | return bfd_reloc_ok; | |
1366 | ||
1367 | case R_MN10300_GOTOFF16: | |
1368 | value -= bfd_get_section_by_name (dynobj, | |
1369 | ".got")->output_section->vma; | |
1370 | value += addend; | |
1371 | ||
1372 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1373 | return bfd_reloc_overflow; | |
1374 | ||
1375 | bfd_put_16 (input_bfd, value, hit_data); | |
1376 | return bfd_reloc_ok; | |
1377 | ||
1378 | case R_MN10300_PLT32: | |
1379 | if (h != NULL | |
1380 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1381 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1382 | && h->plt.offset != (bfd_vma) -1) | |
1383 | { | |
1384 | asection * splt; | |
1385 | ||
1386 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1387 | ||
1388 | value = (splt->output_section->vma | |
1389 | + splt->output_offset | |
1390 | + h->plt.offset) - value; | |
1391 | } | |
1392 | ||
1393 | value -= (input_section->output_section->vma | |
1394 | + input_section->output_offset); | |
1395 | value -= offset; | |
1396 | value += addend; | |
1397 | ||
1398 | bfd_put_32 (input_bfd, value, hit_data); | |
1399 | return bfd_reloc_ok; | |
1400 | ||
1401 | case R_MN10300_PLT16: | |
1402 | if (h != NULL | |
1403 | && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL | |
1404 | && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN | |
1405 | && h->plt.offset != (bfd_vma) -1) | |
1406 | { | |
1407 | asection * splt; | |
1408 | ||
1409 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1410 | ||
1411 | value = (splt->output_section->vma | |
1412 | + splt->output_offset | |
1413 | + h->plt.offset) - value; | |
1414 | } | |
1415 | ||
1416 | value -= (input_section->output_section->vma | |
1417 | + input_section->output_offset); | |
1418 | value -= offset; | |
1419 | value += addend; | |
1420 | ||
1421 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1422 | return bfd_reloc_overflow; | |
1423 | ||
1424 | bfd_put_16 (input_bfd, value, hit_data); | |
1425 | return bfd_reloc_ok; | |
1426 | ||
1427 | case R_MN10300_GOT32: | |
1428 | case R_MN10300_GOT24: | |
1429 | case R_MN10300_GOT16: | |
1430 | { | |
1431 | asection * sgot; | |
1432 | ||
1433 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1434 | ||
1435 | if (h != NULL) | |
1436 | { | |
1437 | bfd_vma off; | |
1438 | ||
1439 | off = h->got.offset; | |
1440 | BFD_ASSERT (off != (bfd_vma) -1); | |
1441 | ||
1442 | if (! elf_hash_table (info)->dynamic_sections_created | |
1443 | || (info->shared | |
1444 | && (info->symbolic || h->dynindx == -1) | |
1445 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
1446 | /* This is actually a static link, or it is a | |
1447 | -Bsymbolic link and the symbol is defined | |
1448 | locally, or the symbol was forced to be local | |
1449 | because of a version file. We must initialize | |
1450 | this entry in the global offset table. | |
1451 | ||
1452 | When doing a dynamic link, we create a .rela.got | |
1453 | relocation entry to initialize the value. This | |
1454 | is done in the finish_dynamic_symbol routine. */ | |
1455 | bfd_put_32 (output_bfd, value, | |
1456 | sgot->contents + off); | |
1457 | ||
1458 | value = sgot->output_offset + off; | |
1459 | } | |
1460 | else | |
1461 | { | |
1462 | bfd_vma off; | |
1463 | ||
1464 | off = elf_local_got_offsets (input_bfd)[symndx]; | |
1465 | ||
1466 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
1467 | ||
1468 | if (info->shared) | |
1469 | { | |
1470 | asection * srelgot; | |
1471 | Elf_Internal_Rela outrel; | |
1472 | ||
1473 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1474 | BFD_ASSERT (srelgot != NULL); | |
1475 | ||
1476 | outrel.r_offset = (sgot->output_section->vma | |
1477 | + sgot->output_offset | |
1478 | + off); | |
1479 | outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
1480 | outrel.r_addend = value; | |
1481 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, | |
560e09e9 NC |
1482 | (bfd_byte *) (((Elf32_External_Rela *) |
1483 | srelgot->contents) | |
1484 | + srelgot->reloc_count)); | |
03a12831 AO |
1485 | ++ srelgot->reloc_count; |
1486 | } | |
1487 | ||
1488 | value = sgot->output_offset + off; | |
1489 | } | |
1490 | } | |
1491 | ||
1492 | value += addend; | |
1493 | ||
1494 | if (r_type == R_MN10300_GOT32) | |
1495 | { | |
1496 | bfd_put_32 (input_bfd, value, hit_data); | |
1497 | return bfd_reloc_ok; | |
1498 | } | |
1499 | else if (r_type == R_MN10300_GOT24) | |
1500 | { | |
1501 | if ((long) value > 0x7fffff || (long) value < -0x800000) | |
1502 | return bfd_reloc_overflow; | |
1503 | ||
1504 | bfd_put_8 (input_bfd, value & 0xff, hit_data); | |
1505 | bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); | |
1506 | bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); | |
1507 | return bfd_reloc_ok; | |
1508 | } | |
1509 | else if (r_type == R_MN10300_GOT16) | |
1510 | { | |
1511 | if ((long) value > 0xffff || (long) value < -0x10000) | |
1512 | return bfd_reloc_overflow; | |
1513 | ||
1514 | bfd_put_16 (input_bfd, value, hit_data); | |
1515 | return bfd_reloc_ok; | |
1516 | } | |
1517 | /* Fall through. */ | |
1518 | ||
252b5132 RH |
1519 | default: |
1520 | return bfd_reloc_notsupported; | |
1521 | } | |
1522 | } | |
252b5132 RH |
1523 | \f |
1524 | /* Relocate an MN10300 ELF section. */ | |
b34976b6 | 1525 | static bfd_boolean |
252b5132 RH |
1526 | mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
1527 | contents, relocs, local_syms, local_sections) | |
1528 | bfd *output_bfd; | |
1529 | struct bfd_link_info *info; | |
1530 | bfd *input_bfd; | |
1531 | asection *input_section; | |
1532 | bfd_byte *contents; | |
1533 | Elf_Internal_Rela *relocs; | |
1534 | Elf_Internal_Sym *local_syms; | |
1535 | asection **local_sections; | |
1536 | { | |
1537 | Elf_Internal_Shdr *symtab_hdr; | |
1538 | struct elf32_mn10300_link_hash_entry **sym_hashes; | |
1539 | Elf_Internal_Rela *rel, *relend; | |
1540 | ||
1049f94e | 1541 | if (info->relocatable) |
b34976b6 | 1542 | return TRUE; |
b491616a | 1543 | |
252b5132 RH |
1544 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
1545 | sym_hashes = (struct elf32_mn10300_link_hash_entry **) | |
1546 | (elf_sym_hashes (input_bfd)); | |
1547 | ||
1548 | rel = relocs; | |
1549 | relend = relocs + input_section->reloc_count; | |
1550 | for (; rel < relend; rel++) | |
1551 | { | |
1552 | int r_type; | |
1553 | reloc_howto_type *howto; | |
1554 | unsigned long r_symndx; | |
1555 | Elf_Internal_Sym *sym; | |
1556 | asection *sec; | |
1557 | struct elf32_mn10300_link_hash_entry *h; | |
1558 | bfd_vma relocation; | |
1559 | bfd_reloc_status_type r; | |
1560 | ||
1561 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1562 | r_type = ELF32_R_TYPE (rel->r_info); | |
1563 | howto = elf_mn10300_howto_table + r_type; | |
1564 | ||
1565 | /* Just skip the vtable gc relocs. */ | |
1566 | if (r_type == R_MN10300_GNU_VTINHERIT | |
1567 | || r_type == R_MN10300_GNU_VTENTRY) | |
1568 | continue; | |
1569 | ||
252b5132 RH |
1570 | h = NULL; |
1571 | sym = NULL; | |
1572 | sec = NULL; | |
1573 | if (r_symndx < symtab_hdr->sh_info) | |
1574 | { | |
1575 | sym = local_syms + r_symndx; | |
1576 | sec = local_sections[r_symndx]; | |
f8df10f4 | 1577 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
252b5132 RH |
1578 | } |
1579 | else | |
1580 | { | |
560e09e9 NC |
1581 | bfd_boolean unresolved_reloc; |
1582 | bfd_boolean warned; | |
1583 | struct elf_link_hash_entry *hh; | |
1584 | ||
1585 | RELOC_FOR_GLOBAL_SYMBOL (hh, (struct elf_link_hash_entry *) sym_hashes, | |
1586 | r_symndx, symtab_hdr, relocation, | |
1587 | sec, unresolved_reloc, info, | |
1588 | warned); | |
1589 | ||
1590 | h = (struct elf32_mn10300_link_hash_entry *) hh; | |
1591 | ||
1592 | if ((h->root.root.type == bfd_link_hash_defined | |
252b5132 | 1593 | || h->root.root.type == bfd_link_hash_defweak) |
560e09e9 | 1594 | && ( r_type == R_MN10300_GOTPC32 |
03a12831 AO |
1595 | || r_type == R_MN10300_GOTPC16 |
1596 | || (( r_type == R_MN10300_PLT32 | |
1597 | || r_type == R_MN10300_PLT16) | |
1598 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
1599 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
1600 | && h->root.plt.offset != (bfd_vma) -1) | |
1601 | || (( r_type == R_MN10300_GOT32 | |
1602 | || r_type == R_MN10300_GOT24 | |
1603 | || r_type == R_MN10300_GOT16) | |
1604 | && elf_hash_table (info)->dynamic_sections_created | |
1605 | && (! info->shared | |
1606 | || (! info->symbolic && h->root.dynindx != -1) | |
1607 | || (h->root.elf_link_hash_flags | |
1608 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
1609 | || (info->shared | |
1610 | && ((! info->symbolic && h->root.dynindx != -1) | |
1611 | || (h->root.elf_link_hash_flags | |
1612 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1613 | && ( r_type == R_MN10300_32 | |
1614 | || r_type == R_MN10300_PCREL32) | |
1615 | && ((input_section->flags & SEC_ALLOC) != 0 | |
1616 | /* DWARF will emit R_MN10300_32 relocations | |
1617 | in its sections against symbols defined | |
1618 | externally in shared libraries. We can't | |
1619 | do anything with them here. */ | |
1620 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
1621 | && (h->root.elf_link_hash_flags | |
560e09e9 NC |
1622 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0))))) |
1623 | /* In these cases, we don't need the relocation | |
1624 | value. We check specially because in some | |
1625 | obscure cases sec->output_section will be NULL. */ | |
03a12831 | 1626 | relocation = 0; |
560e09e9 NC |
1627 | |
1628 | else if (unresolved_reloc) | |
1629 | (*_bfd_error_handler) | |
1630 | (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"), | |
1631 | bfd_get_filename (input_bfd), h->root.root.root.string, | |
1632 | bfd_get_section_name (input_bfd, input_section)); | |
252b5132 RH |
1633 | } |
1634 | ||
1635 | r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, | |
1636 | input_section, | |
1637 | contents, rel->r_offset, | |
1638 | relocation, rel->r_addend, | |
03a12831 AO |
1639 | (struct elf_link_hash_entry *)h, |
1640 | r_symndx, | |
252b5132 RH |
1641 | info, sec, h == NULL); |
1642 | ||
1643 | if (r != bfd_reloc_ok) | |
1644 | { | |
1645 | const char *name; | |
010ac81f | 1646 | const char *msg = (const char *) 0; |
252b5132 RH |
1647 | |
1648 | if (h != NULL) | |
1649 | name = h->root.root.root.string; | |
1650 | else | |
1651 | { | |
1652 | name = (bfd_elf_string_from_elf_section | |
1653 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1654 | if (name == NULL || *name == '\0') | |
1655 | name = bfd_section_name (input_bfd, sec); | |
1656 | } | |
1657 | ||
1658 | switch (r) | |
1659 | { | |
1660 | case bfd_reloc_overflow: | |
1661 | if (! ((*info->callbacks->reloc_overflow) | |
1662 | (info, name, howto->name, (bfd_vma) 0, | |
1663 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 1664 | return FALSE; |
252b5132 RH |
1665 | break; |
1666 | ||
1667 | case bfd_reloc_undefined: | |
1668 | if (! ((*info->callbacks->undefined_symbol) | |
1669 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1670 | rel->r_offset, TRUE))) |
1671 | return FALSE; | |
252b5132 RH |
1672 | break; |
1673 | ||
1674 | case bfd_reloc_outofrange: | |
1675 | msg = _("internal error: out of range error"); | |
1676 | goto common_error; | |
1677 | ||
1678 | case bfd_reloc_notsupported: | |
1679 | msg = _("internal error: unsupported relocation error"); | |
1680 | goto common_error; | |
1681 | ||
1682 | case bfd_reloc_dangerous: | |
1683 | msg = _("internal error: dangerous error"); | |
1684 | goto common_error; | |
1685 | ||
1686 | default: | |
1687 | msg = _("internal error: unknown error"); | |
1688 | /* fall through */ | |
1689 | ||
1690 | common_error: | |
1691 | if (!((*info->callbacks->warning) | |
1692 | (info, msg, name, input_bfd, input_section, | |
1693 | rel->r_offset))) | |
b34976b6 | 1694 | return FALSE; |
252b5132 RH |
1695 | break; |
1696 | } | |
1697 | } | |
1698 | } | |
1699 | ||
b34976b6 | 1700 | return TRUE; |
252b5132 RH |
1701 | } |
1702 | ||
1703 | /* Finish initializing one hash table entry. */ | |
b34976b6 | 1704 | static bfd_boolean |
252b5132 RH |
1705 | elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) |
1706 | struct bfd_hash_entry *gen_entry; | |
5f771d47 | 1707 | PTR in_args ATTRIBUTE_UNUSED; |
252b5132 RH |
1708 | { |
1709 | struct elf32_mn10300_link_hash_entry *entry; | |
1710 | unsigned int byte_count = 0; | |
1711 | ||
010ac81f | 1712 | entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; |
252b5132 | 1713 | |
e92d460e AM |
1714 | if (entry->root.root.type == bfd_link_hash_warning) |
1715 | entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link; | |
1716 | ||
252b5132 RH |
1717 | /* If we already know we want to convert "call" to "calls" for calls |
1718 | to this symbol, then return now. */ | |
1719 | if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) | |
b34976b6 | 1720 | return TRUE; |
252b5132 RH |
1721 | |
1722 | /* If there are no named calls to this symbol, or there's nothing we | |
1723 | can move from the function itself into the "call" instruction, then | |
1724 | note that all "call" instructions should be converted into "calls" | |
1725 | instructions and return. */ | |
1726 | if (entry->direct_calls == 0 | |
1727 | || (entry->stack_size == 0 && entry->movm_args == 0)) | |
1728 | { | |
1729 | /* Make a note that we should convert "call" instructions to "calls" | |
1730 | instructions for calls to this symbol. */ | |
1731 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
b34976b6 | 1732 | return TRUE; |
252b5132 RH |
1733 | } |
1734 | ||
1735 | /* We may be able to move some instructions from the function itself into | |
1736 | the "call" instruction. Count how many bytes we might be able to | |
1737 | eliminate in the function itself. */ | |
1738 | ||
1739 | /* A movm instruction is two bytes. */ | |
1740 | if (entry->movm_args) | |
1741 | byte_count += 2; | |
1742 | ||
1743 | /* Count the insn to allocate stack space too. */ | |
1744 | if (entry->stack_size > 0 && entry->stack_size <= 128) | |
1745 | byte_count += 3; | |
1746 | else if (entry->stack_size > 0 && entry->stack_size < 256) | |
1747 | byte_count += 4; | |
1748 | ||
1749 | /* If using "call" will result in larger code, then turn all | |
1750 | the associated "call" instructions into "calls" instrutions. */ | |
1751 | if (byte_count < entry->direct_calls) | |
1752 | entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1753 | ||
1754 | /* This routine never fails. */ | |
b34976b6 | 1755 | return TRUE; |
252b5132 RH |
1756 | } |
1757 | ||
1758 | /* This function handles relaxing for the mn10300. | |
1759 | ||
1760 | There's quite a few relaxing opportunites available on the mn10300: | |
1761 | ||
1762 | * calls:32 -> calls:16 2 bytes | |
1763 | * call:32 -> call:16 2 bytes | |
1764 | ||
1765 | * call:32 -> calls:32 1 byte | |
1766 | * call:16 -> calls:16 1 byte | |
1767 | * These are done anytime using "calls" would result | |
1768 | in smaller code, or when necessary to preserve the | |
1769 | meaning of the program. | |
1770 | ||
1771 | * call:32 varies | |
1772 | * call:16 | |
1773 | * In some circumstances we can move instructions | |
1774 | from a function prologue into a "call" instruction. | |
1775 | This is only done if the resulting code is no larger | |
1776 | than the original code. | |
1777 | ||
252b5132 RH |
1778 | * jmp:32 -> jmp:16 2 bytes |
1779 | * jmp:16 -> bra:8 1 byte | |
1780 | ||
1781 | * If the previous instruction is a conditional branch | |
1782 | around the jump/bra, we may be able to reverse its condition | |
1783 | and change its target to the jump's target. The jump/bra | |
1784 | can then be deleted. 2 bytes | |
1785 | ||
1786 | * mov abs32 -> mov abs16 1 or 2 bytes | |
1787 | ||
1788 | * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes | |
1789 | - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes | |
1790 | ||
1791 | * Most instructions which accept d32 can relax to d16 1 or 2 bytes | |
1792 | - Most instructions which accept d16 can relax to d8 1 or 2 bytes | |
1793 | ||
1794 | We don't handle imm16->imm8 or d16->d8 as they're very rare | |
1795 | and somewhat more difficult to support. */ | |
1796 | ||
b34976b6 | 1797 | static bfd_boolean |
252b5132 RH |
1798 | mn10300_elf_relax_section (abfd, sec, link_info, again) |
1799 | bfd *abfd; | |
1800 | asection *sec; | |
1801 | struct bfd_link_info *link_info; | |
b34976b6 | 1802 | bfd_boolean *again; |
252b5132 RH |
1803 | { |
1804 | Elf_Internal_Shdr *symtab_hdr; | |
1805 | Elf_Internal_Rela *internal_relocs = NULL; | |
252b5132 RH |
1806 | Elf_Internal_Rela *irel, *irelend; |
1807 | bfd_byte *contents = NULL; | |
6cdc0ccc | 1808 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 | 1809 | struct elf32_mn10300_link_hash_table *hash_table; |
6cdc0ccc | 1810 | asection *section = sec; |
252b5132 RH |
1811 | |
1812 | /* Assume nothing changes. */ | |
b34976b6 | 1813 | *again = FALSE; |
252b5132 RH |
1814 | |
1815 | /* We need a pointer to the mn10300 specific hash table. */ | |
1816 | hash_table = elf32_mn10300_hash_table (link_info); | |
1817 | ||
1818 | /* Initialize fields in each hash table entry the first time through. */ | |
1819 | if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) | |
1820 | { | |
1821 | bfd *input_bfd; | |
1822 | ||
1823 | /* Iterate over all the input bfds. */ | |
1824 | for (input_bfd = link_info->input_bfds; | |
1825 | input_bfd != NULL; | |
1826 | input_bfd = input_bfd->link_next) | |
1827 | { | |
252b5132 RH |
1828 | /* We're going to need all the symbols for each bfd. */ |
1829 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6cdc0ccc | 1830 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 1831 | { |
6cdc0ccc AM |
1832 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1833 | if (isymbuf == NULL) | |
1834 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
1835 | symtab_hdr->sh_info, 0, | |
1836 | NULL, NULL, NULL); | |
1837 | if (isymbuf == NULL) | |
010ac81f KH |
1838 | goto error_return; |
1839 | } | |
252b5132 RH |
1840 | |
1841 | /* Iterate over each section in this bfd. */ | |
1842 | for (section = input_bfd->sections; | |
1843 | section != NULL; | |
1844 | section = section->next) | |
1845 | { | |
1846 | struct elf32_mn10300_link_hash_entry *hash; | |
1847 | Elf_Internal_Sym *sym; | |
86033394 | 1848 | asection *sym_sec = NULL; |
252b5132 RH |
1849 | const char *sym_name; |
1850 | char *new_name; | |
252b5132 | 1851 | |
e948afaf AO |
1852 | /* If there's nothing to do in this section, skip it. */ |
1853 | if (! (((section->flags & SEC_RELOC) != 0 | |
1854 | && section->reloc_count != 0) | |
1855 | || (section->flags & SEC_CODE) != 0)) | |
1856 | continue; | |
1857 | ||
252b5132 RH |
1858 | /* Get cached copy of section contents if it exists. */ |
1859 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
1860 | contents = elf_section_data (section)->this_hdr.contents; | |
1861 | else if (section->_raw_size != 0) | |
1862 | { | |
1863 | /* Go get them off disk. */ | |
010ac81f | 1864 | contents = (bfd_byte *) bfd_malloc (section->_raw_size); |
252b5132 RH |
1865 | if (contents == NULL) |
1866 | goto error_return; | |
252b5132 RH |
1867 | |
1868 | if (!bfd_get_section_contents (input_bfd, section, | |
1869 | contents, (file_ptr) 0, | |
1870 | section->_raw_size)) | |
1871 | goto error_return; | |
1872 | } | |
1873 | else | |
6cdc0ccc | 1874 | contents = NULL; |
252b5132 RH |
1875 | |
1876 | /* If there aren't any relocs, then there's nothing to do. */ | |
1877 | if ((section->flags & SEC_RELOC) != 0 | |
1878 | && section->reloc_count != 0) | |
1879 | { | |
1880 | ||
1881 | /* Get a copy of the native relocations. */ | |
45d6a902 | 1882 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
1883 | (input_bfd, section, (PTR) NULL, |
1884 | (Elf_Internal_Rela *) NULL, | |
1885 | link_info->keep_memory)); | |
1886 | if (internal_relocs == NULL) | |
1887 | goto error_return; | |
252b5132 RH |
1888 | |
1889 | /* Now examine each relocation. */ | |
1890 | irel = internal_relocs; | |
1891 | irelend = irel + section->reloc_count; | |
1892 | for (; irel < irelend; irel++) | |
1893 | { | |
1894 | long r_type; | |
1895 | unsigned long r_index; | |
1896 | unsigned char code; | |
1897 | ||
1898 | r_type = ELF32_R_TYPE (irel->r_info); | |
1899 | r_index = ELF32_R_SYM (irel->r_info); | |
1900 | ||
010ac81f | 1901 | if (r_type < 0 || r_type >= (int) R_MN10300_MAX) |
252b5132 RH |
1902 | goto error_return; |
1903 | ||
1904 | /* We need the name and hash table entry of the target | |
1905 | symbol! */ | |
1906 | hash = NULL; | |
1907 | sym = NULL; | |
1908 | sym_sec = NULL; | |
1909 | ||
1910 | if (r_index < symtab_hdr->sh_info) | |
1911 | { | |
1912 | /* A local symbol. */ | |
6cdc0ccc | 1913 | Elf_Internal_Sym *isym; |
dc810e39 AM |
1914 | struct elf_link_hash_table *elftab; |
1915 | bfd_size_type amt; | |
252b5132 | 1916 | |
6cdc0ccc AM |
1917 | isym = isymbuf + r_index; |
1918 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 1919 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 1920 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 1921 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 1922 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 1923 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
1924 | else |
1925 | sym_sec | |
1926 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 1927 | isym->st_shndx); |
a7c10850 | 1928 | |
9ad5cbcf AM |
1929 | sym_name |
1930 | = bfd_elf_string_from_elf_section (input_bfd, | |
1931 | (symtab_hdr | |
1932 | ->sh_link), | |
6cdc0ccc | 1933 | isym->st_name); |
252b5132 RH |
1934 | |
1935 | /* If it isn't a function, then we don't care | |
1936 | about it. */ | |
6cdc0ccc | 1937 | if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) |
252b5132 RH |
1938 | continue; |
1939 | ||
1940 | /* Tack on an ID so we can uniquely identify this | |
1941 | local symbol in the global hash table. */ | |
dc810e39 AM |
1942 | amt = strlen (sym_name) + 10; |
1943 | new_name = bfd_malloc (amt); | |
252b5132 RH |
1944 | if (new_name == 0) |
1945 | goto error_return; | |
1946 | ||
010ac81f KH |
1947 | sprintf (new_name, "%s_%08x", |
1948 | sym_name, (int) sym_sec); | |
252b5132 RH |
1949 | sym_name = new_name; |
1950 | ||
dc810e39 AM |
1951 | elftab = &hash_table->static_hash_table->root; |
1952 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
1953 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 1954 | TRUE, TRUE, FALSE)); |
252b5132 RH |
1955 | free (new_name); |
1956 | } | |
1957 | else | |
1958 | { | |
1959 | r_index -= symtab_hdr->sh_info; | |
1960 | hash = (struct elf32_mn10300_link_hash_entry *) | |
1961 | elf_sym_hashes (input_bfd)[r_index]; | |
1962 | } | |
1963 | ||
1964 | /* If this is not a "call" instruction, then we | |
1965 | should convert "call" instructions to "calls" | |
1966 | instructions. */ | |
1967 | code = bfd_get_8 (input_bfd, | |
1968 | contents + irel->r_offset - 1); | |
1969 | if (code != 0xdd && code != 0xcd) | |
1970 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1971 | ||
6cdc0ccc AM |
1972 | /* If this is a jump/call, then bump the |
1973 | direct_calls counter. Else force "call" to | |
1974 | "calls" conversions. */ | |
252b5132 | 1975 | if (r_type == R_MN10300_PCREL32 |
03a12831 AO |
1976 | || r_type == R_MN10300_PLT32 |
1977 | || r_type == R_MN10300_PLT16 | |
252b5132 RH |
1978 | || r_type == R_MN10300_PCREL16) |
1979 | hash->direct_calls++; | |
1980 | else | |
1981 | hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | /* Now look at the actual contents to get the stack size, | |
1986 | and a list of what registers were saved in the prologue | |
1987 | (ie movm_args). */ | |
1988 | if ((section->flags & SEC_CODE) != 0) | |
1989 | { | |
6cdc0ccc | 1990 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 1991 | unsigned int sec_shndx; |
6cdc0ccc AM |
1992 | struct elf_link_hash_entry **hashes; |
1993 | struct elf_link_hash_entry **end_hashes; | |
1994 | unsigned int symcount; | |
252b5132 | 1995 | |
9ad5cbcf AM |
1996 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
1997 | section); | |
252b5132 | 1998 | |
252b5132 RH |
1999 | /* Look at each function defined in this section and |
2000 | update info for that function. */ | |
6cdc0ccc AM |
2001 | isymend = isymbuf + symtab_hdr->sh_info; |
2002 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2003 | { |
6cdc0ccc AM |
2004 | if (isym->st_shndx == sec_shndx |
2005 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
252b5132 | 2006 | { |
dc810e39 AM |
2007 | struct elf_link_hash_table *elftab; |
2008 | bfd_size_type amt; | |
2009 | ||
6cdc0ccc | 2010 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2011 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2012 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2013 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2014 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2015 | sym_sec = bfd_com_section_ptr; |
9ad5cbcf AM |
2016 | else |
2017 | sym_sec | |
2018 | = bfd_section_from_elf_index (input_bfd, | |
6cdc0ccc | 2019 | isym->st_shndx); |
252b5132 | 2020 | |
dc810e39 AM |
2021 | sym_name = (bfd_elf_string_from_elf_section |
2022 | (input_bfd, symtab_hdr->sh_link, | |
6cdc0ccc | 2023 | isym->st_name)); |
252b5132 RH |
2024 | |
2025 | /* Tack on an ID so we can uniquely identify this | |
2026 | local symbol in the global hash table. */ | |
dc810e39 AM |
2027 | amt = strlen (sym_name) + 10; |
2028 | new_name = bfd_malloc (amt); | |
252b5132 RH |
2029 | if (new_name == 0) |
2030 | goto error_return; | |
2031 | ||
010ac81f KH |
2032 | sprintf (new_name, "%s_%08x", |
2033 | sym_name, (int) sym_sec); | |
252b5132 RH |
2034 | sym_name = new_name; |
2035 | ||
dc810e39 AM |
2036 | elftab = &hash_table->static_hash_table->root; |
2037 | hash = ((struct elf32_mn10300_link_hash_entry *) | |
2038 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2039 | TRUE, TRUE, FALSE)); |
252b5132 RH |
2040 | free (new_name); |
2041 | compute_function_info (input_bfd, hash, | |
6cdc0ccc | 2042 | isym->st_value, contents); |
252b5132 RH |
2043 | } |
2044 | } | |
2045 | ||
6cdc0ccc AM |
2046 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
2047 | - symtab_hdr->sh_info); | |
709e685d | 2048 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
2049 | end_hashes = hashes + symcount; |
2050 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 2051 | { |
6cdc0ccc | 2052 | hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2053 | if ((hash->root.root.type == bfd_link_hash_defined |
2054 | || hash->root.root.type == bfd_link_hash_defweak) | |
2055 | && hash->root.root.u.def.section == section | |
6cdc0ccc | 2056 | && ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
252b5132 RH |
2057 | compute_function_info (input_bfd, hash, |
2058 | (hash)->root.root.u.def.value, | |
2059 | contents); | |
2060 | } | |
2061 | } | |
2062 | ||
2063 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2064 | if (internal_relocs != NULL |
2065 | && elf_section_data (section)->relocs != internal_relocs) | |
2066 | free (internal_relocs); | |
2067 | internal_relocs = NULL; | |
252b5132 RH |
2068 | |
2069 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2070 | if (contents != NULL |
2071 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2072 | { |
2073 | if (! link_info->keep_memory) | |
6cdc0ccc | 2074 | free (contents); |
252b5132 RH |
2075 | else |
2076 | { | |
2077 | /* Cache the section contents for elf_link_input_bfd. */ | |
2078 | elf_section_data (section)->this_hdr.contents = contents; | |
2079 | } | |
252b5132 | 2080 | } |
6cdc0ccc | 2081 | contents = NULL; |
9ad5cbcf AM |
2082 | } |
2083 | ||
252b5132 | 2084 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2085 | if (isymbuf != NULL |
2086 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2087 | { |
2088 | if (! link_info->keep_memory) | |
6cdc0ccc | 2089 | free (isymbuf); |
252b5132 RH |
2090 | else |
2091 | { | |
2092 | /* Cache the symbols for elf_link_input_bfd. */ | |
6cdc0ccc | 2093 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 | 2094 | } |
252b5132 | 2095 | } |
6cdc0ccc | 2096 | isymbuf = NULL; |
252b5132 RH |
2097 | } |
2098 | ||
2099 | /* Now iterate on each symbol in the hash table and perform | |
2100 | the final initialization steps on each. */ | |
2101 | elf32_mn10300_link_hash_traverse (hash_table, | |
2102 | elf32_mn10300_finish_hash_table_entry, | |
2103 | NULL); | |
2104 | elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, | |
2105 | elf32_mn10300_finish_hash_table_entry, | |
2106 | NULL); | |
2107 | ||
2108 | /* All entries in the hash table are fully initialized. */ | |
2109 | hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; | |
2110 | ||
2111 | /* Now that everything has been initialized, go through each | |
2112 | code section and delete any prologue insns which will be | |
2113 | redundant because their operations will be performed by | |
2114 | a "call" instruction. */ | |
2115 | for (input_bfd = link_info->input_bfds; | |
2116 | input_bfd != NULL; | |
2117 | input_bfd = input_bfd->link_next) | |
2118 | { | |
9ad5cbcf | 2119 | /* We're going to need all the local symbols for each bfd. */ |
252b5132 | 2120 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
6cdc0ccc | 2121 | if (symtab_hdr->sh_info != 0) |
9ad5cbcf | 2122 | { |
6cdc0ccc AM |
2123 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2124 | if (isymbuf == NULL) | |
2125 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
2126 | symtab_hdr->sh_info, 0, | |
2127 | NULL, NULL, NULL); | |
2128 | if (isymbuf == NULL) | |
9ad5cbcf | 2129 | goto error_return; |
010ac81f | 2130 | } |
252b5132 RH |
2131 | |
2132 | /* Walk over each section in this bfd. */ | |
2133 | for (section = input_bfd->sections; | |
2134 | section != NULL; | |
2135 | section = section->next) | |
2136 | { | |
9ad5cbcf | 2137 | unsigned int sec_shndx; |
6cdc0ccc AM |
2138 | Elf_Internal_Sym *isym, *isymend; |
2139 | struct elf_link_hash_entry **hashes; | |
2140 | struct elf_link_hash_entry **end_hashes; | |
2141 | unsigned int symcount; | |
252b5132 RH |
2142 | |
2143 | /* Skip non-code sections and empty sections. */ | |
2144 | if ((section->flags & SEC_CODE) == 0 || section->_raw_size == 0) | |
2145 | continue; | |
2146 | ||
2147 | if (section->reloc_count != 0) | |
2148 | { | |
010ac81f | 2149 | /* Get a copy of the native relocations. */ |
45d6a902 | 2150 | internal_relocs = (_bfd_elf_link_read_relocs |
010ac81f KH |
2151 | (input_bfd, section, (PTR) NULL, |
2152 | (Elf_Internal_Rela *) NULL, | |
2153 | link_info->keep_memory)); | |
2154 | if (internal_relocs == NULL) | |
2155 | goto error_return; | |
252b5132 RH |
2156 | } |
2157 | ||
2158 | /* Get cached copy of section contents if it exists. */ | |
2159 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
2160 | contents = elf_section_data (section)->this_hdr.contents; | |
2161 | else | |
2162 | { | |
2163 | /* Go get them off disk. */ | |
010ac81f | 2164 | contents = (bfd_byte *) bfd_malloc (section->_raw_size); |
252b5132 RH |
2165 | if (contents == NULL) |
2166 | goto error_return; | |
252b5132 RH |
2167 | |
2168 | if (!bfd_get_section_contents (input_bfd, section, | |
2169 | contents, (file_ptr) 0, | |
2170 | section->_raw_size)) | |
2171 | goto error_return; | |
2172 | } | |
2173 | ||
9ad5cbcf AM |
2174 | sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, |
2175 | section); | |
252b5132 RH |
2176 | |
2177 | /* Now look for any function in this section which needs | |
2178 | insns deleted from its prologue. */ | |
6cdc0ccc AM |
2179 | isymend = isymbuf + symtab_hdr->sh_info; |
2180 | for (isym = isymbuf; isym < isymend; isym++) | |
252b5132 | 2181 | { |
252b5132 | 2182 | struct elf32_mn10300_link_hash_entry *sym_hash; |
86033394 | 2183 | asection *sym_sec = NULL; |
252b5132 | 2184 | const char *sym_name; |
252b5132 | 2185 | char *new_name; |
dc810e39 AM |
2186 | struct elf_link_hash_table *elftab; |
2187 | bfd_size_type amt; | |
252b5132 | 2188 | |
6cdc0ccc | 2189 | if (isym->st_shndx != sec_shndx) |
252b5132 RH |
2190 | continue; |
2191 | ||
6cdc0ccc | 2192 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 2193 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2194 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2195 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2196 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2197 | sym_sec = bfd_com_section_ptr; |
86033394 | 2198 | else |
9ad5cbcf | 2199 | sym_sec |
6cdc0ccc | 2200 | = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
a7c10850 | 2201 | |
9ad5cbcf AM |
2202 | sym_name |
2203 | = bfd_elf_string_from_elf_section (input_bfd, | |
2204 | symtab_hdr->sh_link, | |
6cdc0ccc | 2205 | isym->st_name); |
252b5132 RH |
2206 | |
2207 | /* Tack on an ID so we can uniquely identify this | |
2208 | local symbol in the global hash table. */ | |
dc810e39 AM |
2209 | amt = strlen (sym_name) + 10; |
2210 | new_name = bfd_malloc (amt); | |
252b5132 RH |
2211 | if (new_name == 0) |
2212 | goto error_return; | |
010ac81f | 2213 | sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); |
252b5132 RH |
2214 | sym_name = new_name; |
2215 | ||
dc810e39 AM |
2216 | elftab = &hash_table->static_hash_table->root; |
2217 | sym_hash = ((struct elf32_mn10300_link_hash_entry *) | |
2218 | elf_link_hash_lookup (elftab, sym_name, | |
b34976b6 | 2219 | FALSE, FALSE, FALSE)); |
252b5132 RH |
2220 | |
2221 | free (new_name); | |
2222 | if (sym_hash == NULL) | |
2223 | continue; | |
2224 | ||
9ad5cbcf AM |
2225 | if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) |
2226 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2227 | { |
2228 | int bytes = 0; | |
2229 | ||
2230 | /* Note that we've changed things. */ | |
2231 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2232 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2233 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2234 | |
2235 | /* Count how many bytes we're going to delete. */ | |
2236 | if (sym_hash->movm_args) | |
2237 | bytes += 2; | |
2238 | ||
2239 | if (sym_hash->stack_size && sym_hash->stack_size <= 128) | |
2240 | bytes += 3; | |
2241 | else if (sym_hash->stack_size | |
2242 | && sym_hash->stack_size < 256) | |
2243 | bytes += 4; | |
2244 | ||
2245 | /* Note that we've deleted prologue bytes for this | |
2246 | function. */ | |
2247 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2248 | ||
2249 | /* Actually delete the bytes. */ | |
2250 | if (!mn10300_elf_relax_delete_bytes (input_bfd, | |
2251 | section, | |
6cdc0ccc | 2252 | isym->st_value, |
252b5132 RH |
2253 | bytes)) |
2254 | goto error_return; | |
2255 | ||
2256 | /* Something changed. Not strictly necessary, but | |
2257 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2258 | *again = TRUE; |
252b5132 RH |
2259 | } |
2260 | } | |
2261 | ||
2262 | /* Look for any global functions in this section which | |
2263 | need insns deleted from their prologues. */ | |
6cdc0ccc | 2264 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
9ad5cbcf | 2265 | - symtab_hdr->sh_info); |
709e685d | 2266 | hashes = elf_sym_hashes (input_bfd); |
6cdc0ccc AM |
2267 | end_hashes = hashes + symcount; |
2268 | for (; hashes < end_hashes; hashes++) | |
252b5132 | 2269 | { |
252b5132 RH |
2270 | struct elf32_mn10300_link_hash_entry *sym_hash; |
2271 | ||
6cdc0ccc | 2272 | sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; |
9ad5cbcf AM |
2273 | if ((sym_hash->root.root.type == bfd_link_hash_defined |
2274 | || sym_hash->root.root.type == bfd_link_hash_defweak) | |
2275 | && sym_hash->root.root.u.def.section == section | |
2276 | && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) | |
2277 | && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) | |
252b5132 RH |
2278 | { |
2279 | int bytes = 0; | |
9ad5cbcf | 2280 | bfd_vma symval; |
252b5132 RH |
2281 | |
2282 | /* Note that we've changed things. */ | |
2283 | elf_section_data (section)->relocs = internal_relocs; | |
252b5132 | 2284 | elf_section_data (section)->this_hdr.contents = contents; |
6cdc0ccc | 2285 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2286 | |
2287 | /* Count how many bytes we're going to delete. */ | |
2288 | if (sym_hash->movm_args) | |
2289 | bytes += 2; | |
2290 | ||
2291 | if (sym_hash->stack_size && sym_hash->stack_size <= 128) | |
2292 | bytes += 3; | |
2293 | else if (sym_hash->stack_size | |
2294 | && sym_hash->stack_size < 256) | |
2295 | bytes += 4; | |
2296 | ||
2297 | /* Note that we've deleted prologue bytes for this | |
2298 | function. */ | |
2299 | sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; | |
2300 | ||
2301 | /* Actually delete the bytes. */ | |
9ad5cbcf | 2302 | symval = sym_hash->root.root.u.def.value; |
252b5132 RH |
2303 | if (!mn10300_elf_relax_delete_bytes (input_bfd, |
2304 | section, | |
9ad5cbcf | 2305 | symval, |
252b5132 RH |
2306 | bytes)) |
2307 | goto error_return; | |
2308 | ||
2309 | /* Something changed. Not strictly necessary, but | |
2310 | may lead to more relaxing opportunities. */ | |
b34976b6 | 2311 | *again = TRUE; |
252b5132 RH |
2312 | } |
2313 | } | |
2314 | ||
2315 | /* Cache or free any memory we allocated for the relocs. */ | |
6cdc0ccc AM |
2316 | if (internal_relocs != NULL |
2317 | && elf_section_data (section)->relocs != internal_relocs) | |
2318 | free (internal_relocs); | |
2319 | internal_relocs = NULL; | |
252b5132 RH |
2320 | |
2321 | /* Cache or free any memory we allocated for the contents. */ | |
6cdc0ccc AM |
2322 | if (contents != NULL |
2323 | && elf_section_data (section)->this_hdr.contents != contents) | |
252b5132 RH |
2324 | { |
2325 | if (! link_info->keep_memory) | |
6cdc0ccc | 2326 | free (contents); |
252b5132 RH |
2327 | else |
2328 | { | |
2329 | /* Cache the section contents for elf_link_input_bfd. */ | |
2330 | elf_section_data (section)->this_hdr.contents = contents; | |
2331 | } | |
252b5132 | 2332 | } |
6cdc0ccc | 2333 | contents = NULL; |
9ad5cbcf AM |
2334 | } |
2335 | ||
252b5132 | 2336 | /* Cache or free any memory we allocated for the symbols. */ |
6cdc0ccc AM |
2337 | if (isymbuf != NULL |
2338 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
2339 | { |
2340 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
2341 | free (isymbuf); |
2342 | else | |
252b5132 | 2343 | { |
6cdc0ccc AM |
2344 | /* Cache the symbols for elf_link_input_bfd. */ |
2345 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 2346 | } |
252b5132 | 2347 | } |
6cdc0ccc | 2348 | isymbuf = NULL; |
252b5132 RH |
2349 | } |
2350 | } | |
2351 | ||
252b5132 RH |
2352 | /* (Re)initialize for the basic instruction shortening/relaxing pass. */ |
2353 | contents = NULL; | |
252b5132 | 2354 | internal_relocs = NULL; |
6cdc0ccc AM |
2355 | isymbuf = NULL; |
2356 | /* For error_return. */ | |
2357 | section = sec; | |
252b5132 | 2358 | |
1049f94e | 2359 | /* We don't have to do anything for a relocatable link, if |
252b5132 RH |
2360 | this section does not have relocs, or if this is not a |
2361 | code section. */ | |
1049f94e | 2362 | if (link_info->relocatable |
252b5132 RH |
2363 | || (sec->flags & SEC_RELOC) == 0 |
2364 | || sec->reloc_count == 0 | |
2365 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 2366 | return TRUE; |
252b5132 RH |
2367 | |
2368 | /* If this is the first time we have been called for this section, | |
2369 | initialize the cooked size. */ | |
2370 | if (sec->_cooked_size == 0) | |
2371 | sec->_cooked_size = sec->_raw_size; | |
2372 | ||
2373 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2374 | ||
2375 | /* Get a copy of the native relocations. */ | |
45d6a902 | 2376 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 RH |
2377 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
2378 | link_info->keep_memory)); | |
2379 | if (internal_relocs == NULL) | |
2380 | goto error_return; | |
252b5132 RH |
2381 | |
2382 | /* Walk through them looking for relaxing opportunities. */ | |
2383 | irelend = internal_relocs + sec->reloc_count; | |
2384 | for (irel = internal_relocs; irel < irelend; irel++) | |
2385 | { | |
2386 | bfd_vma symval; | |
2387 | struct elf32_mn10300_link_hash_entry *h = NULL; | |
2388 | ||
2389 | /* If this isn't something that can be relaxed, then ignore | |
2390 | this reloc. */ | |
2391 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE | |
2392 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 | |
2393 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) | |
2394 | continue; | |
2395 | ||
2396 | /* Get the section contents if we haven't done so already. */ | |
2397 | if (contents == NULL) | |
2398 | { | |
2399 | /* Get cached copy if it exists. */ | |
2400 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2401 | contents = elf_section_data (sec)->this_hdr.contents; | |
2402 | else | |
2403 | { | |
2404 | /* Go get them off disk. */ | |
2405 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
2406 | if (contents == NULL) | |
2407 | goto error_return; | |
252b5132 RH |
2408 | |
2409 | if (! bfd_get_section_contents (abfd, sec, contents, | |
2410 | (file_ptr) 0, sec->_raw_size)) | |
2411 | goto error_return; | |
2412 | } | |
2413 | } | |
2414 | ||
b34976b6 | 2415 | /* Read this BFD's symbols if we haven't done so already. */ |
6cdc0ccc | 2416 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
252b5132 | 2417 | { |
6cdc0ccc AM |
2418 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
2419 | if (isymbuf == NULL) | |
2420 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
2421 | symtab_hdr->sh_info, 0, | |
2422 | NULL, NULL, NULL); | |
2423 | if (isymbuf == NULL) | |
2424 | goto error_return; | |
252b5132 RH |
2425 | } |
2426 | ||
2427 | /* Get the value of the symbol referred to by the reloc. */ | |
2428 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2429 | { | |
6cdc0ccc | 2430 | Elf_Internal_Sym *isym; |
86033394 | 2431 | asection *sym_sec = NULL; |
252b5132 RH |
2432 | const char *sym_name; |
2433 | char *new_name; | |
2434 | ||
2435 | /* A local symbol. */ | |
6cdc0ccc AM |
2436 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
2437 | if (isym->st_shndx == SHN_UNDEF) | |
252b5132 | 2438 | sym_sec = bfd_und_section_ptr; |
6cdc0ccc | 2439 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 2440 | sym_sec = bfd_abs_section_ptr; |
6cdc0ccc | 2441 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 | 2442 | sym_sec = bfd_com_section_ptr; |
86033394 | 2443 | else |
6cdc0ccc | 2444 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
a7c10850 | 2445 | |
6cdc0ccc | 2446 | symval = (isym->st_value |
252b5132 RH |
2447 | + sym_sec->output_section->vma |
2448 | + sym_sec->output_offset); | |
2449 | sym_name = bfd_elf_string_from_elf_section (abfd, | |
2450 | symtab_hdr->sh_link, | |
6cdc0ccc | 2451 | isym->st_name); |
252b5132 RH |
2452 | |
2453 | /* Tack on an ID so we can uniquely identify this | |
2454 | local symbol in the global hash table. */ | |
dc810e39 | 2455 | new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); |
252b5132 RH |
2456 | if (new_name == 0) |
2457 | goto error_return; | |
010ac81f | 2458 | sprintf (new_name, "%s_%08x", sym_name, (int) sym_sec); |
252b5132 RH |
2459 | sym_name = new_name; |
2460 | ||
2461 | h = (struct elf32_mn10300_link_hash_entry *) | |
2462 | elf_link_hash_lookup (&hash_table->static_hash_table->root, | |
b34976b6 | 2463 | sym_name, FALSE, FALSE, FALSE); |
252b5132 RH |
2464 | free (new_name); |
2465 | } | |
2466 | else | |
2467 | { | |
2468 | unsigned long indx; | |
2469 | ||
2470 | /* An external symbol. */ | |
2471 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2472 | h = (struct elf32_mn10300_link_hash_entry *) | |
2473 | (elf_sym_hashes (abfd)[indx]); | |
2474 | BFD_ASSERT (h != NULL); | |
2475 | if (h->root.root.type != bfd_link_hash_defined | |
2476 | && h->root.root.type != bfd_link_hash_defweak) | |
2477 | { | |
2478 | /* This appears to be a reference to an undefined | |
2479 | symbol. Just ignore it--it will be caught by the | |
2480 | regular reloc processing. */ | |
2481 | continue; | |
2482 | } | |
2483 | ||
2484 | symval = (h->root.root.u.def.value | |
2485 | + h->root.root.u.def.section->output_section->vma | |
2486 | + h->root.root.u.def.section->output_offset); | |
2487 | } | |
2488 | ||
2489 | /* For simplicity of coding, we are going to modify the section | |
2490 | contents, the section relocs, and the BFD symbol table. We | |
2491 | must tell the rest of the code not to free up this | |
2492 | information. It would be possible to instead create a table | |
2493 | of changes which have to be made, as is done in coff-mips.c; | |
2494 | that would be more work, but would require less memory when | |
2495 | the linker is run. */ | |
2496 | ||
2497 | /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative | |
2498 | branch/call, also deal with "call" -> "calls" conversions and | |
2499 | insertion of prologue data into "call" instructions. */ | |
03a12831 AO |
2500 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 |
2501 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) | |
252b5132 RH |
2502 | { |
2503 | bfd_vma value = symval; | |
2504 | ||
03a12831 AO |
2505 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 |
2506 | && h != NULL | |
2507 | && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL | |
2508 | && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN | |
2509 | && h->root.plt.offset != (bfd_vma) -1) | |
2510 | { | |
2511 | asection * splt; | |
2512 | ||
2513 | splt = bfd_get_section_by_name (elf_hash_table (link_info) | |
2514 | ->dynobj, ".plt"); | |
2515 | ||
2516 | value = ((splt->output_section->vma | |
2517 | + splt->output_offset | |
2518 | + h->root.plt.offset) | |
2519 | - (sec->output_section->vma | |
2520 | + sec->output_offset | |
2521 | + irel->r_offset)); | |
2522 | } | |
2523 | ||
252b5132 RH |
2524 | /* If we've got a "call" instruction that needs to be turned |
2525 | into a "calls" instruction, do so now. It saves a byte. */ | |
2526 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2527 | { | |
2528 | unsigned char code; | |
2529 | ||
2530 | /* Get the opcode. */ | |
2531 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2532 | ||
2533 | /* Make sure we're working with a "call" instruction! */ | |
2534 | if (code == 0xdd) | |
2535 | { | |
2536 | /* Note that we've changed the relocs, section contents, | |
2537 | etc. */ | |
2538 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2539 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2540 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2541 | |
2542 | /* Fix the opcode. */ | |
2543 | bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); | |
2544 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2545 | ||
2546 | /* Fix irel->r_offset and irel->r_addend. */ | |
2547 | irel->r_offset += 1; | |
2548 | irel->r_addend += 1; | |
2549 | ||
2550 | /* Delete one byte of data. */ | |
2551 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2552 | irel->r_offset + 3, 1)) | |
2553 | goto error_return; | |
2554 | ||
2555 | /* That will change things, so, we should relax again. | |
2556 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2557 | *again = TRUE; |
252b5132 RH |
2558 | } |
2559 | } | |
2560 | else if (h) | |
2561 | { | |
2562 | /* We've got a "call" instruction which needs some data | |
2563 | from target function filled in. */ | |
2564 | unsigned char code; | |
2565 | ||
2566 | /* Get the opcode. */ | |
2567 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2568 | ||
2569 | /* Insert data from the target function into the "call" | |
2570 | instruction if needed. */ | |
2571 | if (code == 0xdd) | |
2572 | { | |
2573 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); | |
2574 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2575 | contents + irel->r_offset + 5); | |
2576 | } | |
2577 | } | |
2578 | ||
2579 | /* Deal with pc-relative gunk. */ | |
2580 | value -= (sec->output_section->vma + sec->output_offset); | |
2581 | value -= irel->r_offset; | |
2582 | value += irel->r_addend; | |
2583 | ||
2584 | /* See if the value will fit in 16 bits, note the high value is | |
2585 | 0x7fff + 2 as the target will be two bytes closer if we are | |
2586 | able to relax. */ | |
010ac81f | 2587 | if ((long) value < 0x8001 && (long) value > -0x8000) |
252b5132 RH |
2588 | { |
2589 | unsigned char code; | |
2590 | ||
2591 | /* Get the opcode. */ | |
2592 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2593 | ||
2594 | if (code != 0xdc && code != 0xdd && code != 0xff) | |
2595 | continue; | |
2596 | ||
2597 | /* Note that we've changed the relocs, section contents, etc. */ | |
2598 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2599 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2600 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2601 | |
2602 | /* Fix the opcode. */ | |
2603 | if (code == 0xdc) | |
2604 | bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); | |
2605 | else if (code == 0xdd) | |
2606 | bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); | |
2607 | else if (code == 0xff) | |
2608 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
2609 | ||
2610 | /* Fix the relocation's type. */ | |
2611 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
2612 | (ELF32_R_TYPE (irel->r_info) |
2613 | == (int) R_MN10300_PLT32) | |
2614 | ? R_MN10300_PLT16 : | |
252b5132 RH |
2615 | R_MN10300_PCREL16); |
2616 | ||
2617 | /* Delete two bytes of data. */ | |
2618 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2619 | irel->r_offset + 1, 2)) | |
2620 | goto error_return; | |
2621 | ||
2622 | /* That will change things, so, we should relax again. | |
2623 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2624 | *again = TRUE; |
252b5132 RH |
2625 | } |
2626 | } | |
2627 | ||
2628 | /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative | |
2629 | branch. */ | |
2630 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) | |
2631 | { | |
2632 | bfd_vma value = symval; | |
2633 | ||
2634 | /* If we've got a "call" instruction that needs to be turned | |
2635 | into a "calls" instruction, do so now. It saves a byte. */ | |
2636 | if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) | |
2637 | { | |
2638 | unsigned char code; | |
2639 | ||
2640 | /* Get the opcode. */ | |
2641 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2642 | ||
2643 | /* Make sure we're working with a "call" instruction! */ | |
2644 | if (code == 0xcd) | |
2645 | { | |
2646 | /* Note that we've changed the relocs, section contents, | |
2647 | etc. */ | |
2648 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2649 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2650 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2651 | |
2652 | /* Fix the opcode. */ | |
2653 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); | |
2654 | bfd_put_8 (abfd, 0xff, contents + irel->r_offset); | |
2655 | ||
2656 | /* Fix irel->r_offset and irel->r_addend. */ | |
2657 | irel->r_offset += 1; | |
2658 | irel->r_addend += 1; | |
2659 | ||
2660 | /* Delete one byte of data. */ | |
2661 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2662 | irel->r_offset + 1, 1)) | |
2663 | goto error_return; | |
2664 | ||
2665 | /* That will change things, so, we should relax again. | |
2666 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2667 | *again = TRUE; |
252b5132 RH |
2668 | } |
2669 | } | |
2670 | else if (h) | |
2671 | { | |
2672 | unsigned char code; | |
2673 | ||
2674 | /* Get the opcode. */ | |
2675 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2676 | ||
2677 | /* Insert data from the target function into the "call" | |
2678 | instruction if needed. */ | |
2679 | if (code == 0xcd) | |
2680 | { | |
2681 | bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); | |
2682 | bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, | |
2683 | contents + irel->r_offset + 3); | |
2684 | } | |
2685 | } | |
2686 | ||
2687 | /* Deal with pc-relative gunk. */ | |
2688 | value -= (sec->output_section->vma + sec->output_offset); | |
2689 | value -= irel->r_offset; | |
2690 | value += irel->r_addend; | |
2691 | ||
2692 | /* See if the value will fit in 8 bits, note the high value is | |
2693 | 0x7f + 1 as the target will be one bytes closer if we are | |
2694 | able to relax. */ | |
010ac81f | 2695 | if ((long) value < 0x80 && (long) value > -0x80) |
252b5132 RH |
2696 | { |
2697 | unsigned char code; | |
2698 | ||
2699 | /* Get the opcode. */ | |
2700 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2701 | ||
2702 | if (code != 0xcc) | |
2703 | continue; | |
2704 | ||
2705 | /* Note that we've changed the relocs, section contents, etc. */ | |
2706 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2707 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2708 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2709 | |
2710 | /* Fix the opcode. */ | |
2711 | bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); | |
2712 | ||
2713 | /* Fix the relocation's type. */ | |
2714 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2715 | R_MN10300_PCREL8); | |
2716 | ||
2717 | /* Delete one byte of data. */ | |
2718 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2719 | irel->r_offset + 1, 1)) | |
2720 | goto error_return; | |
2721 | ||
2722 | /* That will change things, so, we should relax again. | |
2723 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2724 | *again = TRUE; |
252b5132 RH |
2725 | } |
2726 | } | |
2727 | ||
2728 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
2729 | which immediately follows a conditional 8 bit pc-relative | |
2730 | branch around the unconditional branch. | |
2731 | ||
2732 | original: new: | |
2733 | bCC lab1 bCC' lab2 | |
2734 | bra lab2 | |
2735 | lab1: lab1: | |
2736 | ||
252b5132 RH |
2737 | This happens when the bCC can't reach lab2 at assembly time, |
2738 | but due to other relaxations it can reach at link time. */ | |
2739 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) | |
2740 | { | |
2741 | Elf_Internal_Rela *nrel; | |
2742 | bfd_vma value = symval; | |
2743 | unsigned char code; | |
2744 | ||
2745 | /* Deal with pc-relative gunk. */ | |
2746 | value -= (sec->output_section->vma + sec->output_offset); | |
2747 | value -= irel->r_offset; | |
2748 | value += irel->r_addend; | |
2749 | ||
2750 | /* Do nothing if this reloc is the last byte in the section. */ | |
2751 | if (irel->r_offset == sec->_cooked_size) | |
2752 | continue; | |
2753 | ||
2754 | /* See if the next instruction is an unconditional pc-relative | |
2755 | branch, more often than not this test will fail, so we | |
2756 | test it first to speed things up. */ | |
2757 | code = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
2758 | if (code != 0xca) | |
2759 | continue; | |
2760 | ||
2761 | /* Also make sure the next relocation applies to the next | |
2762 | instruction and that it's a pc-relative 8 bit branch. */ | |
2763 | nrel = irel + 1; | |
2764 | if (nrel == irelend | |
2765 | || irel->r_offset + 2 != nrel->r_offset | |
2766 | || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) | |
2767 | continue; | |
2768 | ||
2769 | /* Make sure our destination immediately follows the | |
2770 | unconditional branch. */ | |
2771 | if (symval != (sec->output_section->vma + sec->output_offset | |
2772 | + irel->r_offset + 3)) | |
2773 | continue; | |
2774 | ||
2775 | /* Now make sure we are a conditional branch. This may not | |
2776 | be necessary, but why take the chance. | |
2777 | ||
2778 | Note these checks assume that R_MN10300_PCREL8 relocs | |
2779 | only occur on bCC and bCCx insns. If they occured | |
2780 | elsewhere, we'd need to know the start of this insn | |
2781 | for this check to be accurate. */ | |
2782 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
2783 | if (code != 0xc0 && code != 0xc1 && code != 0xc2 | |
2784 | && code != 0xc3 && code != 0xc4 && code != 0xc5 | |
2785 | && code != 0xc6 && code != 0xc7 && code != 0xc8 | |
2786 | && code != 0xc9 && code != 0xe8 && code != 0xe9 | |
2787 | && code != 0xea && code != 0xeb) | |
2788 | continue; | |
2789 | ||
2790 | /* We also have to be sure there is no symbol/label | |
2791 | at the unconditional branch. */ | |
6cdc0ccc AM |
2792 | if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, |
2793 | irel->r_offset + 1)) | |
252b5132 RH |
2794 | continue; |
2795 | ||
2796 | /* Note that we've changed the relocs, section contents, etc. */ | |
2797 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 2798 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2799 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
2800 | |
2801 | /* Reverse the condition of the first branch. */ | |
2802 | switch (code) | |
2803 | { | |
010ac81f KH |
2804 | case 0xc8: |
2805 | code = 0xc9; | |
2806 | break; | |
2807 | case 0xc9: | |
2808 | code = 0xc8; | |
2809 | break; | |
2810 | case 0xc0: | |
2811 | code = 0xc2; | |
2812 | break; | |
2813 | case 0xc2: | |
2814 | code = 0xc0; | |
2815 | break; | |
2816 | case 0xc3: | |
2817 | code = 0xc1; | |
2818 | break; | |
2819 | case 0xc1: | |
2820 | code = 0xc3; | |
2821 | break; | |
2822 | case 0xc4: | |
2823 | code = 0xc6; | |
2824 | break; | |
2825 | case 0xc6: | |
2826 | code = 0xc4; | |
2827 | break; | |
2828 | case 0xc7: | |
2829 | code = 0xc5; | |
2830 | break; | |
2831 | case 0xc5: | |
2832 | code = 0xc7; | |
2833 | break; | |
2834 | case 0xe8: | |
2835 | code = 0xe9; | |
2836 | break; | |
2837 | case 0x9d: | |
2838 | code = 0xe8; | |
2839 | break; | |
2840 | case 0xea: | |
2841 | code = 0xeb; | |
2842 | break; | |
2843 | case 0xeb: | |
2844 | code = 0xea; | |
2845 | break; | |
252b5132 RH |
2846 | } |
2847 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
2848 | ||
2849 | /* Set the reloc type and symbol for the first branch | |
2850 | from the second branch. */ | |
2851 | irel->r_info = nrel->r_info; | |
2852 | ||
2853 | /* Make the reloc for the second branch a null reloc. */ | |
2854 | nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), | |
2855 | R_MN10300_NONE); | |
2856 | ||
2857 | /* Delete two bytes of data. */ | |
2858 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2859 | irel->r_offset + 1, 2)) | |
2860 | goto error_return; | |
2861 | ||
2862 | /* That will change things, so, we should relax again. | |
2863 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 2864 | *again = TRUE; |
252b5132 RH |
2865 | } |
2866 | ||
31f8dc8f JL |
2867 | /* Try to turn a 24 immediate, displacement or absolute address |
2868 | into a 8 immediate, displacement or absolute address. */ | |
2869 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) | |
2870 | { | |
2871 | bfd_vma value = symval; | |
2872 | value += irel->r_addend; | |
2873 | ||
2874 | /* See if the value will fit in 8 bits. */ | |
010ac81f | 2875 | if ((long) value < 0x7f && (long) value > -0x80) |
31f8dc8f JL |
2876 | { |
2877 | unsigned char code; | |
2878 | ||
2879 | /* AM33 insns which have 24 operands are 6 bytes long and | |
2880 | will have 0xfd as the first byte. */ | |
2881 | ||
2882 | /* Get the first opcode. */ | |
2883 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
2884 | ||
2885 | if (code == 0xfd) | |
2886 | { | |
010ac81f KH |
2887 | /* Get the second opcode. */ |
2888 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
31f8dc8f JL |
2889 | |
2890 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
2891 | equivalent instructions exists. */ | |
2892 | if (code != 0x6b && code != 0x7b | |
2893 | && code != 0x8b && code != 0x9b | |
2894 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 | |
2895 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
2896 | || (code & 0x0f) == 0x0e)) | |
2897 | { | |
2898 | /* Not safe if the high bit is on as relaxing may | |
2899 | move the value out of high mem and thus not fit | |
2900 | in a signed 8bit value. This is currently over | |
2901 | conservative. */ | |
2902 | if ((value & 0x80) == 0) | |
2903 | { | |
2904 | /* Note that we've changed the relocation contents, | |
2905 | etc. */ | |
2906 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 2907 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 2908 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
2909 | |
2910 | /* Fix the opcode. */ | |
2911 | bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); | |
2912 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
2913 | ||
2914 | /* Fix the relocation's type. */ | |
010ac81f KH |
2915 | irel->r_info = |
2916 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
2917 | R_MN10300_8); | |
31f8dc8f JL |
2918 | |
2919 | /* Delete two bytes of data. */ | |
2920 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
2921 | irel->r_offset + 1, 2)) | |
2922 | goto error_return; | |
2923 | ||
2924 | /* That will change things, so, we should relax | |
2925 | again. Note that this is not required, and it | |
010ac81f | 2926 | may be slow. */ |
b34976b6 | 2927 | *again = TRUE; |
31f8dc8f JL |
2928 | break; |
2929 | } | |
2930 | } | |
31f8dc8f JL |
2931 | } |
2932 | } | |
2933 | } | |
252b5132 RH |
2934 | |
2935 | /* Try to turn a 32bit immediate, displacement or absolute address | |
2936 | into a 16bit immediate, displacement or absolute address. */ | |
03a12831 AO |
2937 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 |
2938 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 | |
2939 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32 | |
2940 | || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
252b5132 RH |
2941 | { |
2942 | bfd_vma value = symval; | |
03a12831 AO |
2943 | |
2944 | if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) | |
2945 | { | |
2946 | asection * sgot; | |
2947 | ||
2948 | sgot = bfd_get_section_by_name (elf_hash_table (link_info) | |
2949 | ->dynobj, ".got"); | |
2950 | ||
2951 | if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) | |
2952 | { | |
2953 | value = sgot->output_offset; | |
2954 | ||
2955 | if (h) | |
2956 | value += h->root.got.offset; | |
2957 | else | |
2958 | value += (elf_local_got_offsets | |
2959 | (abfd)[ELF32_R_SYM (irel->r_info)]); | |
2960 | } | |
2961 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) | |
2962 | value -= sgot->output_section->vma; | |
2963 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) | |
2964 | value = (sgot->output_section->vma | |
2965 | - (sec->output_section->vma | |
2966 | + sec->output_offset | |
2967 | + irel->r_offset)); | |
2968 | else | |
2969 | abort (); | |
2970 | } | |
2971 | ||
252b5132 RH |
2972 | value += irel->r_addend; |
2973 | ||
31f8dc8f JL |
2974 | /* See if the value will fit in 24 bits. |
2975 | We allow any 16bit match here. We prune those we can't | |
2976 | handle below. */ | |
010ac81f | 2977 | if ((long) value < 0x7fffff && (long) value > -0x800000) |
31f8dc8f JL |
2978 | { |
2979 | unsigned char code; | |
2980 | ||
2981 | /* AM33 insns which have 32bit operands are 7 bytes long and | |
2982 | will have 0xfe as the first byte. */ | |
2983 | ||
2984 | /* Get the first opcode. */ | |
2985 | code = bfd_get_8 (abfd, contents + irel->r_offset - 3); | |
2986 | ||
2987 | if (code == 0xfe) | |
2988 | { | |
2989 | /* Get the second opcode. */ | |
2990 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
2991 | ||
2992 | /* All the am33 32 -> 24 relaxing possibilities. */ | |
2993 | /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit | |
2994 | equivalent instructions exists. */ | |
010ac81f | 2995 | if (code != 0x6b && code != 0x7b |
31f8dc8f | 2996 | && code != 0x8b && code != 0x9b |
03a12831 AO |
2997 | && (ELF32_R_TYPE (irel->r_info) |
2998 | != (int) R_MN10300_GOTPC32) | |
31f8dc8f JL |
2999 | && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 |
3000 | || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b | |
3001 | || (code & 0x0f) == 0x0e)) | |
3002 | { | |
3003 | /* Not safe if the high bit is on as relaxing may | |
3004 | move the value out of high mem and thus not fit | |
3005 | in a signed 16bit value. This is currently over | |
3006 | conservative. */ | |
3007 | if ((value & 0x8000) == 0) | |
3008 | { | |
3009 | /* Note that we've changed the relocation contents, | |
3010 | etc. */ | |
3011 | elf_section_data (sec)->relocs = internal_relocs; | |
31f8dc8f | 3012 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3013 | symtab_hdr->contents = (unsigned char *) isymbuf; |
31f8dc8f JL |
3014 | |
3015 | /* Fix the opcode. */ | |
3016 | bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); | |
3017 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3018 | ||
3019 | /* Fix the relocation's type. */ | |
010ac81f KH |
3020 | irel->r_info = |
3021 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3022 | (ELF32_R_TYPE (irel->r_info) |
3023 | == (int) R_MN10300_GOTOFF32) | |
3024 | ? R_MN10300_GOTOFF24 | |
3025 | : (ELF32_R_TYPE (irel->r_info) | |
3026 | == (int) R_MN10300_GOT32) | |
3027 | ? R_MN10300_GOT24 : | |
010ac81f | 3028 | R_MN10300_24); |
31f8dc8f JL |
3029 | |
3030 | /* Delete one byte of data. */ | |
3031 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3032 | irel->r_offset + 3, 1)) | |
3033 | goto error_return; | |
3034 | ||
3035 | /* That will change things, so, we should relax | |
3036 | again. Note that this is not required, and it | |
010ac81f | 3037 | may be slow. */ |
b34976b6 | 3038 | *again = TRUE; |
31f8dc8f JL |
3039 | break; |
3040 | } | |
3041 | } | |
31f8dc8f JL |
3042 | } |
3043 | } | |
252b5132 RH |
3044 | |
3045 | /* See if the value will fit in 16 bits. | |
3046 | We allow any 16bit match here. We prune those we can't | |
3047 | handle below. */ | |
010ac81f | 3048 | if ((long) value < 0x7fff && (long) value > -0x8000) |
252b5132 RH |
3049 | { |
3050 | unsigned char code; | |
3051 | ||
3052 | /* Most insns which have 32bit operands are 6 bytes long; | |
3053 | exceptions are pcrel insns and bit insns. | |
3054 | ||
3055 | We handle pcrel insns above. We don't bother trying | |
3056 | to handle the bit insns here. | |
3057 | ||
3058 | The first byte of the remaining insns will be 0xfc. */ | |
3059 | ||
3060 | /* Get the first opcode. */ | |
3061 | code = bfd_get_8 (abfd, contents + irel->r_offset - 2); | |
3062 | ||
3063 | if (code != 0xfc) | |
3064 | continue; | |
3065 | ||
3066 | /* Get the second opcode. */ | |
3067 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
3068 | ||
3069 | if ((code & 0xf0) < 0x80) | |
3070 | switch (code & 0xf0) | |
3071 | { | |
3072 | /* mov (d32,am),dn -> mov (d32,am),dn | |
3073 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3074 | mov (d32,am),an -> mov (d32,am),an | |
3075 | mov dm,(d32,am) -> mov dn,(d32,am) | |
3076 | movbu (d32,am),dn -> movbu (d32,am),dn | |
3077 | movbu dm,(d32,am) -> movbu dn,(d32,am) | |
3078 | movhu (d32,am),dn -> movhu (d32,am),dn | |
3079 | movhu dm,(d32,am) -> movhu dn,(d32,am) */ | |
3080 | case 0x00: | |
3081 | case 0x10: | |
3082 | case 0x20: | |
3083 | case 0x30: | |
3084 | case 0x40: | |
3085 | case 0x50: | |
3086 | case 0x60: | |
3087 | case 0x70: | |
3088 | /* Not safe if the high bit is on as relaxing may | |
3089 | move the value out of high mem and thus not fit | |
3090 | in a signed 16bit value. */ | |
3091 | if (code == 0xcc | |
3092 | && (value & 0x8000)) | |
3093 | continue; | |
3094 | ||
3095 | /* Note that we've changed the relocation contents, etc. */ | |
3096 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3097 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3098 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3099 | |
3100 | /* Fix the opcode. */ | |
3101 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3102 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3103 | ||
3104 | /* Fix the relocation's type. */ | |
3105 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3106 | (ELF32_R_TYPE (irel->r_info) |
3107 | == (int) R_MN10300_GOTOFF32) | |
3108 | ? R_MN10300_GOTOFF16 | |
3109 | : (ELF32_R_TYPE (irel->r_info) | |
3110 | == (int) R_MN10300_GOT32) | |
3111 | ? R_MN10300_GOT16 | |
3112 | : (ELF32_R_TYPE (irel->r_info) | |
3113 | == (int) R_MN10300_GOTPC32) | |
3114 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3115 | R_MN10300_16); |
3116 | ||
3117 | /* Delete two bytes of data. */ | |
3118 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3119 | irel->r_offset + 2, 2)) | |
3120 | goto error_return; | |
3121 | ||
3122 | /* That will change things, so, we should relax again. | |
3123 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3124 | *again = TRUE; |
252b5132 RH |
3125 | break; |
3126 | } | |
3127 | else if ((code & 0xf0) == 0x80 | |
3128 | || (code & 0xf0) == 0x90) | |
3129 | switch (code & 0xf3) | |
3130 | { | |
3131 | /* mov dn,(abs32) -> mov dn,(abs16) | |
3132 | movbu dn,(abs32) -> movbu dn,(abs16) | |
3133 | movhu dn,(abs32) -> movhu dn,(abs16) */ | |
3134 | case 0x81: | |
3135 | case 0x82: | |
3136 | case 0x83: | |
3137 | /* Note that we've changed the relocation contents, etc. */ | |
3138 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3139 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3140 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3141 | |
3142 | if ((code & 0xf3) == 0x81) | |
3143 | code = 0x01 + (code & 0x0c); | |
3144 | else if ((code & 0xf3) == 0x82) | |
3145 | code = 0x02 + (code & 0x0c); | |
3146 | else if ((code & 0xf3) == 0x83) | |
3147 | code = 0x03 + (code & 0x0c); | |
3148 | else | |
3149 | abort (); | |
3150 | ||
3151 | /* Fix the opcode. */ | |
3152 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3153 | ||
3154 | /* Fix the relocation's type. */ | |
3155 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3156 | (ELF32_R_TYPE (irel->r_info) |
3157 | == (int) R_MN10300_GOTOFF32) | |
3158 | ? R_MN10300_GOTOFF16 | |
3159 | : (ELF32_R_TYPE (irel->r_info) | |
3160 | == (int) R_MN10300_GOT32) | |
3161 | ? R_MN10300_GOT16 | |
3162 | : (ELF32_R_TYPE (irel->r_info) | |
3163 | == (int) R_MN10300_GOTPC32) | |
3164 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3165 | R_MN10300_16); |
3166 | ||
3167 | /* The opcode got shorter too, so we have to fix the | |
3168 | addend and offset too! */ | |
3169 | irel->r_offset -= 1; | |
3170 | ||
3171 | /* Delete three bytes of data. */ | |
3172 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3173 | irel->r_offset + 1, 3)) | |
3174 | goto error_return; | |
3175 | ||
3176 | /* That will change things, so, we should relax again. | |
3177 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3178 | *again = TRUE; |
252b5132 RH |
3179 | break; |
3180 | ||
3181 | /* mov am,(abs32) -> mov am,(abs16) | |
3182 | mov am,(d32,sp) -> mov am,(d16,sp) | |
3183 | mov dm,(d32,sp) -> mov dm,(d32,sp) | |
3184 | movbu dm,(d32,sp) -> movbu dm,(d32,sp) | |
3185 | movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ | |
3186 | case 0x80: | |
3187 | case 0x90: | |
3188 | case 0x91: | |
3189 | case 0x92: | |
3190 | case 0x93: | |
2a0fa943 AO |
3191 | /* sp-based offsets are zero-extended. */ |
3192 | if (code >= 0x90 && code <= 0x93 | |
3193 | && (long)value < 0) | |
3194 | continue; | |
3195 | ||
252b5132 RH |
3196 | /* Note that we've changed the relocation contents, etc. */ |
3197 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3198 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3199 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3200 | |
3201 | /* Fix the opcode. */ | |
3202 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3203 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3204 | ||
3205 | /* Fix the relocation's type. */ | |
3206 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3207 | (ELF32_R_TYPE (irel->r_info) |
3208 | == (int) R_MN10300_GOTOFF32) | |
3209 | ? R_MN10300_GOTOFF16 | |
3210 | : (ELF32_R_TYPE (irel->r_info) | |
3211 | == (int) R_MN10300_GOT32) | |
3212 | ? R_MN10300_GOT16 | |
3213 | : (ELF32_R_TYPE (irel->r_info) | |
3214 | == (int) R_MN10300_GOTPC32) | |
3215 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3216 | R_MN10300_16); |
3217 | ||
3218 | /* Delete two bytes of data. */ | |
3219 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3220 | irel->r_offset + 2, 2)) | |
3221 | goto error_return; | |
3222 | ||
3223 | /* That will change things, so, we should relax again. | |
3224 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3225 | *again = TRUE; |
252b5132 RH |
3226 | break; |
3227 | } | |
3228 | else if ((code & 0xf0) < 0xf0) | |
3229 | switch (code & 0xfc) | |
3230 | { | |
3231 | /* mov imm32,dn -> mov imm16,dn | |
3232 | mov imm32,an -> mov imm16,an | |
3233 | mov (abs32),dn -> mov (abs16),dn | |
3234 | movbu (abs32),dn -> movbu (abs16),dn | |
3235 | movhu (abs32),dn -> movhu (abs16),dn */ | |
3236 | case 0xcc: | |
3237 | case 0xdc: | |
3238 | case 0xa4: | |
3239 | case 0xa8: | |
3240 | case 0xac: | |
3241 | /* Not safe if the high bit is on as relaxing may | |
3242 | move the value out of high mem and thus not fit | |
3243 | in a signed 16bit value. */ | |
3244 | if (code == 0xcc | |
3245 | && (value & 0x8000)) | |
3246 | continue; | |
3247 | ||
2a0fa943 AO |
3248 | /* mov imm16, an zero-extends the immediate. */ |
3249 | if (code == 0xdc | |
3250 | && (long)value < 0) | |
3251 | continue; | |
3252 | ||
252b5132 RH |
3253 | /* Note that we've changed the relocation contents, etc. */ |
3254 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3255 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3256 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3257 | |
3258 | if ((code & 0xfc) == 0xcc) | |
3259 | code = 0x2c + (code & 0x03); | |
3260 | else if ((code & 0xfc) == 0xdc) | |
3261 | code = 0x24 + (code & 0x03); | |
3262 | else if ((code & 0xfc) == 0xa4) | |
3263 | code = 0x30 + (code & 0x03); | |
3264 | else if ((code & 0xfc) == 0xa8) | |
3265 | code = 0x34 + (code & 0x03); | |
3266 | else if ((code & 0xfc) == 0xac) | |
3267 | code = 0x38 + (code & 0x03); | |
3268 | else | |
3269 | abort (); | |
3270 | ||
3271 | /* Fix the opcode. */ | |
3272 | bfd_put_8 (abfd, code, contents + irel->r_offset - 2); | |
3273 | ||
3274 | /* Fix the relocation's type. */ | |
3275 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3276 | (ELF32_R_TYPE (irel->r_info) |
3277 | == (int) R_MN10300_GOTOFF32) | |
3278 | ? R_MN10300_GOTOFF16 | |
3279 | : (ELF32_R_TYPE (irel->r_info) | |
3280 | == (int) R_MN10300_GOT32) | |
3281 | ? R_MN10300_GOT16 | |
3282 | : (ELF32_R_TYPE (irel->r_info) | |
3283 | == (int) R_MN10300_GOTPC32) | |
3284 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3285 | R_MN10300_16); |
3286 | ||
3287 | /* The opcode got shorter too, so we have to fix the | |
3288 | addend and offset too! */ | |
3289 | irel->r_offset -= 1; | |
3290 | ||
3291 | /* Delete three bytes of data. */ | |
3292 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3293 | irel->r_offset + 1, 3)) | |
3294 | goto error_return; | |
3295 | ||
3296 | /* That will change things, so, we should relax again. | |
3297 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3298 | *again = TRUE; |
252b5132 RH |
3299 | break; |
3300 | ||
3301 | /* mov (abs32),an -> mov (abs16),an | |
2a0fa943 AO |
3302 | mov (d32,sp),an -> mov (d16,sp),an |
3303 | mov (d32,sp),dn -> mov (d16,sp),dn | |
3304 | movbu (d32,sp),dn -> movbu (d16,sp),dn | |
3305 | movhu (d32,sp),dn -> movhu (d16,sp),dn | |
252b5132 RH |
3306 | add imm32,dn -> add imm16,dn |
3307 | cmp imm32,dn -> cmp imm16,dn | |
3308 | add imm32,an -> add imm16,an | |
3309 | cmp imm32,an -> cmp imm16,an | |
2a0fa943 AO |
3310 | and imm32,dn -> and imm16,dn |
3311 | or imm32,dn -> or imm16,dn | |
3312 | xor imm32,dn -> xor imm16,dn | |
3313 | btst imm32,dn -> btst imm16,dn */ | |
252b5132 RH |
3314 | |
3315 | case 0xa0: | |
3316 | case 0xb0: | |
3317 | case 0xb1: | |
3318 | case 0xb2: | |
3319 | case 0xb3: | |
3320 | case 0xc0: | |
3321 | case 0xc8: | |
3322 | ||
3323 | case 0xd0: | |
3324 | case 0xd8: | |
3325 | case 0xe0: | |
3326 | case 0xe1: | |
3327 | case 0xe2: | |
3328 | case 0xe3: | |
2a0fa943 AO |
3329 | /* cmp imm16, an zero-extends the immediate. */ |
3330 | if (code == 0xdc | |
3331 | && (long)value < 0) | |
3332 | continue; | |
3333 | ||
3334 | /* So do sp-based offsets. */ | |
3335 | if (code >= 0xb0 && code <= 0xb3 | |
3336 | && (long)value < 0) | |
3337 | continue; | |
3338 | ||
252b5132 RH |
3339 | /* Note that we've changed the relocation contents, etc. */ |
3340 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3341 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3342 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3343 | |
3344 | /* Fix the opcode. */ | |
3345 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3346 | bfd_put_8 (abfd, code, contents + irel->r_offset - 1); | |
3347 | ||
3348 | /* Fix the relocation's type. */ | |
3349 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3350 | (ELF32_R_TYPE (irel->r_info) |
3351 | == (int) R_MN10300_GOTOFF32) | |
3352 | ? R_MN10300_GOTOFF16 | |
3353 | : (ELF32_R_TYPE (irel->r_info) | |
3354 | == (int) R_MN10300_GOT32) | |
3355 | ? R_MN10300_GOT16 | |
3356 | : (ELF32_R_TYPE (irel->r_info) | |
3357 | == (int) R_MN10300_GOTPC32) | |
3358 | ? R_MN10300_GOTPC16 : | |
252b5132 RH |
3359 | R_MN10300_16); |
3360 | ||
3361 | /* Delete two bytes of data. */ | |
3362 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3363 | irel->r_offset + 2, 2)) | |
3364 | goto error_return; | |
3365 | ||
3366 | /* That will change things, so, we should relax again. | |
3367 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3368 | *again = TRUE; |
252b5132 RH |
3369 | break; |
3370 | } | |
3371 | else if (code == 0xfe) | |
3372 | { | |
3373 | /* add imm32,sp -> add imm16,sp */ | |
3374 | ||
3375 | /* Note that we've changed the relocation contents, etc. */ | |
3376 | elf_section_data (sec)->relocs = internal_relocs; | |
252b5132 | 3377 | elf_section_data (sec)->this_hdr.contents = contents; |
6cdc0ccc | 3378 | symtab_hdr->contents = (unsigned char *) isymbuf; |
252b5132 RH |
3379 | |
3380 | /* Fix the opcode. */ | |
3381 | bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); | |
3382 | bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); | |
3383 | ||
3384 | /* Fix the relocation's type. */ | |
3385 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
03a12831 AO |
3386 | (ELF32_R_TYPE (irel->r_info) |
3387 | == (int) R_MN10300_GOT32) | |
3388 | ? R_MN10300_GOT16 | |
3389 | : (ELF32_R_TYPE (irel->r_info) | |
3390 | == (int) R_MN10300_GOTOFF32) | |
3391 | ? R_MN10300_GOTOFF16 | |
3392 | : (ELF32_R_TYPE (irel->r_info) | |
3393 | == (int) R_MN10300_GOTPC32) | |
3394 | ? R_MN10300_GOTPC16 : | |
010ac81f | 3395 | R_MN10300_16); |
252b5132 RH |
3396 | |
3397 | /* Delete two bytes of data. */ | |
3398 | if (!mn10300_elf_relax_delete_bytes (abfd, sec, | |
3399 | irel->r_offset + 2, 2)) | |
3400 | goto error_return; | |
3401 | ||
3402 | /* That will change things, so, we should relax again. | |
3403 | Note that this is not required, and it may be slow. */ | |
b34976b6 | 3404 | *again = TRUE; |
252b5132 RH |
3405 | break; |
3406 | } | |
3407 | } | |
3408 | } | |
3409 | } | |
3410 | ||
6cdc0ccc AM |
3411 | if (isymbuf != NULL |
3412 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
252b5132 RH |
3413 | { |
3414 | if (! link_info->keep_memory) | |
6cdc0ccc | 3415 | free (isymbuf); |
252b5132 RH |
3416 | else |
3417 | { | |
6cdc0ccc AM |
3418 | /* Cache the symbols for elf_link_input_bfd. */ |
3419 | symtab_hdr->contents = (unsigned char *) isymbuf; | |
252b5132 | 3420 | } |
9ad5cbcf AM |
3421 | } |
3422 | ||
6cdc0ccc AM |
3423 | if (contents != NULL |
3424 | && elf_section_data (sec)->this_hdr.contents != contents) | |
252b5132 RH |
3425 | { |
3426 | if (! link_info->keep_memory) | |
6cdc0ccc AM |
3427 | free (contents); |
3428 | else | |
252b5132 | 3429 | { |
6cdc0ccc AM |
3430 | /* Cache the section contents for elf_link_input_bfd. */ |
3431 | elf_section_data (sec)->this_hdr.contents = contents; | |
252b5132 | 3432 | } |
252b5132 RH |
3433 | } |
3434 | ||
6cdc0ccc AM |
3435 | if (internal_relocs != NULL |
3436 | && elf_section_data (sec)->relocs != internal_relocs) | |
3437 | free (internal_relocs); | |
3438 | ||
b34976b6 | 3439 | return TRUE; |
252b5132 RH |
3440 | |
3441 | error_return: | |
6cdc0ccc AM |
3442 | if (isymbuf != NULL |
3443 | && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3444 | free (isymbuf); | |
3445 | if (contents != NULL | |
3446 | && elf_section_data (section)->this_hdr.contents != contents) | |
3447 | free (contents); | |
3448 | if (internal_relocs != NULL | |
3449 | && elf_section_data (section)->relocs != internal_relocs) | |
3450 | free (internal_relocs); | |
9ad5cbcf | 3451 | |
b34976b6 | 3452 | return FALSE; |
252b5132 RH |
3453 | } |
3454 | ||
3455 | /* Compute the stack size and movm arguments for the function | |
3456 | referred to by HASH at address ADDR in section with | |
3457 | contents CONTENTS, store the information in the hash table. */ | |
3458 | static void | |
3459 | compute_function_info (abfd, hash, addr, contents) | |
3460 | bfd *abfd; | |
3461 | struct elf32_mn10300_link_hash_entry *hash; | |
3462 | bfd_vma addr; | |
3463 | unsigned char *contents; | |
3464 | { | |
3465 | unsigned char byte1, byte2; | |
3466 | /* We only care about a very small subset of the possible prologue | |
3467 | sequences here. Basically we look for: | |
3468 | ||
3469 | movm [d2,d3,a2,a3],sp (optional) | |
3470 | add <size>,sp (optional, and only for sizes which fit in an unsigned | |
3471 | 8 bit number) | |
3472 | ||
3473 | If we find anything else, we quit. */ | |
3474 | ||
3475 | /* Look for movm [regs],sp */ | |
3476 | byte1 = bfd_get_8 (abfd, contents + addr); | |
3477 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
3478 | ||
3479 | if (byte1 == 0xcf) | |
3480 | { | |
3481 | hash->movm_args = byte2; | |
3482 | addr += 2; | |
3483 | byte1 = bfd_get_8 (abfd, contents + addr); | |
3484 | byte2 = bfd_get_8 (abfd, contents + addr + 1); | |
3485 | } | |
3486 | ||
3487 | /* Now figure out how much stack space will be allocated by the movm | |
3488 | instruction. We need this kept separate from the funtion's normal | |
3489 | stack space. */ | |
3490 | if (hash->movm_args) | |
3491 | { | |
3492 | /* Space for d2. */ | |
3493 | if (hash->movm_args & 0x80) | |
3494 | hash->movm_stack_size += 4; | |
3495 | ||
3496 | /* Space for d3. */ | |
3497 | if (hash->movm_args & 0x40) | |
3498 | hash->movm_stack_size += 4; | |
3499 | ||
3500 | /* Space for a2. */ | |
3501 | if (hash->movm_args & 0x20) | |
3502 | hash->movm_stack_size += 4; | |
3503 | ||
3504 | /* Space for a3. */ | |
3505 | if (hash->movm_args & 0x10) | |
3506 | hash->movm_stack_size += 4; | |
3507 | ||
3508 | /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ | |
3509 | if (hash->movm_args & 0x08) | |
3510 | hash->movm_stack_size += 8 * 4; | |
3511 | ||
b08fa4d3 AO |
3512 | if (bfd_get_mach (abfd) == bfd_mach_am33 |
3513 | || bfd_get_mach (abfd) == bfd_mach_am33_2) | |
31f8dc8f JL |
3514 | { |
3515 | /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ | |
3516 | if (hash->movm_args & 0x1) | |
3517 | hash->movm_stack_size += 6 * 4; | |
3518 | ||
3519 | /* exreg1 space. e4, e5, e6, e7 */ | |
3520 | if (hash->movm_args & 0x2) | |
3521 | hash->movm_stack_size += 4 * 4; | |
3522 | ||
3523 | /* exreg0 space. e2, e3 */ | |
3524 | if (hash->movm_args & 0x4) | |
3525 | hash->movm_stack_size += 2 * 4; | |
3526 | } | |
252b5132 RH |
3527 | } |
3528 | ||
3529 | /* Now look for the two stack adjustment variants. */ | |
3530 | if (byte1 == 0xf8 && byte2 == 0xfe) | |
3531 | { | |
3532 | int temp = bfd_get_8 (abfd, contents + addr + 2); | |
3533 | temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; | |
3534 | ||
3535 | hash->stack_size = -temp; | |
3536 | } | |
3537 | else if (byte1 == 0xfa && byte2 == 0xfe) | |
3538 | { | |
3539 | int temp = bfd_get_16 (abfd, contents + addr + 2); | |
3540 | temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; | |
3541 | temp = -temp; | |
3542 | ||
3543 | if (temp < 255) | |
3544 | hash->stack_size = temp; | |
3545 | } | |
3546 | ||
3547 | /* If the total stack to be allocated by the call instruction is more | |
3548 | than 255 bytes, then we can't remove the stack adjustment by using | |
3549 | "call" (we might still be able to remove the "movm" instruction. */ | |
3550 | if (hash->stack_size + hash->movm_stack_size > 255) | |
3551 | hash->stack_size = 0; | |
3552 | ||
3553 | return; | |
3554 | } | |
3555 | ||
3556 | /* Delete some bytes from a section while relaxing. */ | |
3557 | ||
b34976b6 | 3558 | static bfd_boolean |
252b5132 RH |
3559 | mn10300_elf_relax_delete_bytes (abfd, sec, addr, count) |
3560 | bfd *abfd; | |
3561 | asection *sec; | |
3562 | bfd_vma addr; | |
3563 | int count; | |
3564 | { | |
3565 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 3566 | unsigned int sec_shndx; |
252b5132 RH |
3567 | bfd_byte *contents; |
3568 | Elf_Internal_Rela *irel, *irelend; | |
3569 | Elf_Internal_Rela *irelalign; | |
3570 | bfd_vma toaddr; | |
6cdc0ccc | 3571 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf AM |
3572 | struct elf_link_hash_entry **sym_hashes; |
3573 | struct elf_link_hash_entry **end_hashes; | |
3574 | unsigned int symcount; | |
252b5132 | 3575 | |
9ad5cbcf | 3576 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
252b5132 RH |
3577 | |
3578 | contents = elf_section_data (sec)->this_hdr.contents; | |
3579 | ||
3580 | /* The deletion must stop at the next ALIGN reloc for an aligment | |
3581 | power larger than the number of bytes we are deleting. */ | |
3582 | ||
3583 | irelalign = NULL; | |
3584 | toaddr = sec->_cooked_size; | |
3585 | ||
3586 | irel = elf_section_data (sec)->relocs; | |
3587 | irelend = irel + sec->reloc_count; | |
3588 | ||
3589 | /* Actually delete the bytes. */ | |
dc810e39 AM |
3590 | memmove (contents + addr, contents + addr + count, |
3591 | (size_t) (toaddr - addr - count)); | |
252b5132 RH |
3592 | sec->_cooked_size -= count; |
3593 | ||
3594 | /* Adjust all the relocs. */ | |
3595 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
3596 | { | |
3597 | /* Get the new reloc address. */ | |
3598 | if ((irel->r_offset > addr | |
3599 | && irel->r_offset < toaddr)) | |
3600 | irel->r_offset -= count; | |
3601 | } | |
3602 | ||
3603 | /* Adjust the local symbols defined in this section. */ | |
6cdc0ccc AM |
3604 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3605 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3606 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
252b5132 | 3607 | { |
6cdc0ccc AM |
3608 | if (isym->st_shndx == sec_shndx |
3609 | && isym->st_value > addr | |
3610 | && isym->st_value < toaddr) | |
3611 | isym->st_value -= count; | |
252b5132 RH |
3612 | } |
3613 | ||
3614 | /* Now adjust the global symbols defined in this section. */ | |
9ad5cbcf AM |
3615 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
3616 | - symtab_hdr->sh_info); | |
3617 | sym_hashes = elf_sym_hashes (abfd); | |
3618 | end_hashes = sym_hashes + symcount; | |
3619 | for (; sym_hashes < end_hashes; sym_hashes++) | |
252b5132 | 3620 | { |
9ad5cbcf AM |
3621 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
3622 | if ((sym_hash->root.type == bfd_link_hash_defined | |
3623 | || sym_hash->root.type == bfd_link_hash_defweak) | |
3624 | && sym_hash->root.u.def.section == sec | |
3625 | && sym_hash->root.u.def.value > addr | |
3626 | && sym_hash->root.u.def.value < toaddr) | |
252b5132 | 3627 | { |
9ad5cbcf | 3628 | sym_hash->root.u.def.value -= count; |
252b5132 RH |
3629 | } |
3630 | } | |
3631 | ||
b34976b6 | 3632 | return TRUE; |
252b5132 RH |
3633 | } |
3634 | ||
b34976b6 AM |
3635 | /* Return TRUE if a symbol exists at the given address, else return |
3636 | FALSE. */ | |
3637 | static bfd_boolean | |
6cdc0ccc | 3638 | mn10300_elf_symbol_address_p (abfd, sec, isym, addr) |
252b5132 RH |
3639 | bfd *abfd; |
3640 | asection *sec; | |
6cdc0ccc | 3641 | Elf_Internal_Sym *isym; |
252b5132 RH |
3642 | bfd_vma addr; |
3643 | { | |
3644 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 3645 | unsigned int sec_shndx; |
6cdc0ccc | 3646 | Elf_Internal_Sym *isymend; |
9ad5cbcf AM |
3647 | struct elf_link_hash_entry **sym_hashes; |
3648 | struct elf_link_hash_entry **end_hashes; | |
3649 | unsigned int symcount; | |
252b5132 | 3650 | |
9ad5cbcf | 3651 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
252b5132 RH |
3652 | |
3653 | /* Examine all the symbols. */ | |
9ad5cbcf | 3654 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
6cdc0ccc | 3655 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) |
252b5132 | 3656 | { |
6cdc0ccc AM |
3657 | if (isym->st_shndx == sec_shndx |
3658 | && isym->st_value == addr) | |
b34976b6 | 3659 | return TRUE; |
252b5132 RH |
3660 | } |
3661 | ||
9ad5cbcf AM |
3662 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
3663 | - symtab_hdr->sh_info); | |
3664 | sym_hashes = elf_sym_hashes (abfd); | |
3665 | end_hashes = sym_hashes + symcount; | |
3666 | for (; sym_hashes < end_hashes; sym_hashes++) | |
252b5132 | 3667 | { |
9ad5cbcf AM |
3668 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
3669 | if ((sym_hash->root.type == bfd_link_hash_defined | |
3670 | || sym_hash->root.type == bfd_link_hash_defweak) | |
3671 | && sym_hash->root.u.def.section == sec | |
3672 | && sym_hash->root.u.def.value == addr) | |
b34976b6 | 3673 | return TRUE; |
252b5132 | 3674 | } |
9ad5cbcf | 3675 | |
b34976b6 | 3676 | return FALSE; |
252b5132 RH |
3677 | } |
3678 | ||
3679 | /* This is a version of bfd_generic_get_relocated_section_contents | |
3680 | which uses mn10300_elf_relocate_section. */ | |
3681 | ||
3682 | static bfd_byte * | |
3683 | mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, | |
1049f94e | 3684 | data, relocatable, symbols) |
252b5132 RH |
3685 | bfd *output_bfd; |
3686 | struct bfd_link_info *link_info; | |
3687 | struct bfd_link_order *link_order; | |
3688 | bfd_byte *data; | |
1049f94e | 3689 | bfd_boolean relocatable; |
252b5132 RH |
3690 | asymbol **symbols; |
3691 | { | |
3692 | Elf_Internal_Shdr *symtab_hdr; | |
3693 | asection *input_section = link_order->u.indirect.section; | |
3694 | bfd *input_bfd = input_section->owner; | |
3695 | asection **sections = NULL; | |
3696 | Elf_Internal_Rela *internal_relocs = NULL; | |
6cdc0ccc | 3697 | Elf_Internal_Sym *isymbuf = NULL; |
252b5132 RH |
3698 | |
3699 | /* We only need to handle the case of relaxing, or of having a | |
3700 | particular set of section contents, specially. */ | |
1049f94e | 3701 | if (relocatable |
252b5132 RH |
3702 | || elf_section_data (input_section)->this_hdr.contents == NULL) |
3703 | return bfd_generic_get_relocated_section_contents (output_bfd, link_info, | |
3704 | link_order, data, | |
1049f94e | 3705 | relocatable, |
252b5132 RH |
3706 | symbols); |
3707 | ||
3708 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3709 | ||
3710 | memcpy (data, elf_section_data (input_section)->this_hdr.contents, | |
dc810e39 | 3711 | (size_t) input_section->_raw_size); |
252b5132 RH |
3712 | |
3713 | if ((input_section->flags & SEC_RELOC) != 0 | |
3714 | && input_section->reloc_count > 0) | |
3715 | { | |
252b5132 | 3716 | asection **secpp; |
6cdc0ccc | 3717 | Elf_Internal_Sym *isym, *isymend; |
9ad5cbcf | 3718 | bfd_size_type amt; |
252b5132 | 3719 | |
45d6a902 | 3720 | internal_relocs = (_bfd_elf_link_read_relocs |
252b5132 | 3721 | (input_bfd, input_section, (PTR) NULL, |
b34976b6 | 3722 | (Elf_Internal_Rela *) NULL, FALSE)); |
252b5132 RH |
3723 | if (internal_relocs == NULL) |
3724 | goto error_return; | |
3725 | ||
6cdc0ccc AM |
3726 | if (symtab_hdr->sh_info != 0) |
3727 | { | |
3728 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3729 | if (isymbuf == NULL) | |
3730 | isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3731 | symtab_hdr->sh_info, 0, | |
3732 | NULL, NULL, NULL); | |
3733 | if (isymbuf == NULL) | |
3734 | goto error_return; | |
3735 | } | |
252b5132 | 3736 | |
9ad5cbcf AM |
3737 | amt = symtab_hdr->sh_info; |
3738 | amt *= sizeof (asection *); | |
3739 | sections = (asection **) bfd_malloc (amt); | |
3740 | if (sections == NULL && amt != 0) | |
252b5132 RH |
3741 | goto error_return; |
3742 | ||
6cdc0ccc AM |
3743 | isymend = isymbuf + symtab_hdr->sh_info; |
3744 | for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) | |
252b5132 RH |
3745 | { |
3746 | asection *isec; | |
3747 | ||
6cdc0ccc | 3748 | if (isym->st_shndx == SHN_UNDEF) |
252b5132 | 3749 | isec = bfd_und_section_ptr; |
6cdc0ccc | 3750 | else if (isym->st_shndx == SHN_ABS) |
252b5132 | 3751 | isec = bfd_abs_section_ptr; |
6cdc0ccc | 3752 | else if (isym->st_shndx == SHN_COMMON) |
252b5132 RH |
3753 | isec = bfd_com_section_ptr; |
3754 | else | |
6cdc0ccc | 3755 | isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); |
252b5132 RH |
3756 | |
3757 | *secpp = isec; | |
3758 | } | |
3759 | ||
3760 | if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, | |
3761 | input_section, data, internal_relocs, | |
6cdc0ccc | 3762 | isymbuf, sections)) |
252b5132 RH |
3763 | goto error_return; |
3764 | ||
3765 | if (sections != NULL) | |
3766 | free (sections); | |
6cdc0ccc AM |
3767 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
3768 | free (isymbuf); | |
252b5132 RH |
3769 | if (internal_relocs != elf_section_data (input_section)->relocs) |
3770 | free (internal_relocs); | |
252b5132 RH |
3771 | } |
3772 | ||
3773 | return data; | |
3774 | ||
3775 | error_return: | |
6cdc0ccc AM |
3776 | if (sections != NULL) |
3777 | free (sections); | |
3778 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) | |
3779 | free (isymbuf); | |
252b5132 RH |
3780 | if (internal_relocs != NULL |
3781 | && internal_relocs != elf_section_data (input_section)->relocs) | |
3782 | free (internal_relocs); | |
252b5132 RH |
3783 | return NULL; |
3784 | } | |
3785 | ||
3786 | /* Assorted hash table functions. */ | |
3787 | ||
3788 | /* Initialize an entry in the link hash table. */ | |
3789 | ||
3790 | /* Create an entry in an MN10300 ELF linker hash table. */ | |
3791 | ||
3792 | static struct bfd_hash_entry * | |
3793 | elf32_mn10300_link_hash_newfunc (entry, table, string) | |
3794 | struct bfd_hash_entry *entry; | |
3795 | struct bfd_hash_table *table; | |
3796 | const char *string; | |
3797 | { | |
3798 | struct elf32_mn10300_link_hash_entry *ret = | |
3799 | (struct elf32_mn10300_link_hash_entry *) entry; | |
3800 | ||
3801 | /* Allocate the structure if it has not already been allocated by a | |
3802 | subclass. */ | |
3803 | if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) | |
3804 | ret = ((struct elf32_mn10300_link_hash_entry *) | |
3805 | bfd_hash_allocate (table, | |
3806 | sizeof (struct elf32_mn10300_link_hash_entry))); | |
3807 | if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) | |
3808 | return (struct bfd_hash_entry *) ret; | |
3809 | ||
3810 | /* Call the allocation method of the superclass. */ | |
3811 | ret = ((struct elf32_mn10300_link_hash_entry *) | |
3812 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3813 | table, string)); | |
3814 | if (ret != (struct elf32_mn10300_link_hash_entry *) NULL) | |
3815 | { | |
3816 | ret->direct_calls = 0; | |
3817 | ret->stack_size = 0; | |
5354b572 | 3818 | ret->movm_args = 0; |
252b5132 | 3819 | ret->movm_stack_size = 0; |
03a12831 | 3820 | ret->pcrel_relocs_copied = NULL; |
252b5132 | 3821 | ret->flags = 0; |
252b5132 RH |
3822 | } |
3823 | ||
3824 | return (struct bfd_hash_entry *) ret; | |
3825 | } | |
3826 | ||
3827 | /* Create an mn10300 ELF linker hash table. */ | |
3828 | ||
3829 | static struct bfd_link_hash_table * | |
3830 | elf32_mn10300_link_hash_table_create (abfd) | |
3831 | bfd *abfd; | |
3832 | { | |
3833 | struct elf32_mn10300_link_hash_table *ret; | |
dc810e39 | 3834 | bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table); |
252b5132 | 3835 | |
e2d34d7d | 3836 | ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
3837 | if (ret == (struct elf32_mn10300_link_hash_table *) NULL) |
3838 | return NULL; | |
3839 | ||
3840 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3841 | elf32_mn10300_link_hash_newfunc)) | |
3842 | { | |
e2d34d7d | 3843 | free (ret); |
252b5132 RH |
3844 | return NULL; |
3845 | } | |
3846 | ||
3847 | ret->flags = 0; | |
dc810e39 | 3848 | amt = sizeof (struct elf_link_hash_table); |
252b5132 | 3849 | ret->static_hash_table |
e2d34d7d | 3850 | = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
3851 | if (ret->static_hash_table == NULL) |
3852 | { | |
e2d34d7d | 3853 | free (ret); |
252b5132 RH |
3854 | return NULL; |
3855 | } | |
3856 | ||
3857 | if (! _bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, | |
3858 | elf32_mn10300_link_hash_newfunc)) | |
3859 | { | |
e2d34d7d DJ |
3860 | free (ret->static_hash_table); |
3861 | free (ret); | |
252b5132 RH |
3862 | return NULL; |
3863 | } | |
3864 | return &ret->root.root; | |
3865 | } | |
3866 | ||
e2d34d7d DJ |
3867 | /* Free an mn10300 ELF linker hash table. */ |
3868 | ||
3869 | static void | |
3870 | elf32_mn10300_link_hash_table_free (hash) | |
3871 | struct bfd_link_hash_table *hash; | |
3872 | { | |
3873 | struct elf32_mn10300_link_hash_table *ret | |
3874 | = (struct elf32_mn10300_link_hash_table *) hash; | |
3875 | ||
3876 | _bfd_generic_link_hash_table_free | |
3877 | ((struct bfd_link_hash_table *) ret->static_hash_table); | |
3878 | _bfd_generic_link_hash_table_free | |
3879 | ((struct bfd_link_hash_table *) ret); | |
3880 | } | |
3881 | ||
dc810e39 | 3882 | static unsigned long |
252b5132 RH |
3883 | elf_mn10300_mach (flags) |
3884 | flagword flags; | |
3885 | { | |
3886 | switch (flags & EF_MN10300_MACH) | |
3887 | { | |
010ac81f KH |
3888 | case E_MN10300_MACH_MN10300: |
3889 | default: | |
3890 | return bfd_mach_mn10300; | |
252b5132 | 3891 | |
010ac81f KH |
3892 | case E_MN10300_MACH_AM33: |
3893 | return bfd_mach_am33; | |
b08fa4d3 AO |
3894 | |
3895 | case E_MN10300_MACH_AM33_2: | |
3896 | return bfd_mach_am33_2; | |
252b5132 RH |
3897 | } |
3898 | } | |
3899 | ||
3900 | /* The final processing done just before writing out a MN10300 ELF object | |
3901 | file. This gets the MN10300 architecture right based on the machine | |
3902 | number. */ | |
3903 | ||
252b5132 RH |
3904 | void |
3905 | _bfd_mn10300_elf_final_write_processing (abfd, linker) | |
3906 | bfd *abfd; | |
b34976b6 | 3907 | bfd_boolean linker ATTRIBUTE_UNUSED; |
252b5132 RH |
3908 | { |
3909 | unsigned long val; | |
252b5132 RH |
3910 | |
3911 | switch (bfd_get_mach (abfd)) | |
3912 | { | |
010ac81f KH |
3913 | default: |
3914 | case bfd_mach_mn10300: | |
3915 | val = E_MN10300_MACH_MN10300; | |
3916 | break; | |
3917 | ||
3918 | case bfd_mach_am33: | |
3919 | val = E_MN10300_MACH_AM33; | |
3920 | break; | |
b08fa4d3 AO |
3921 | |
3922 | case bfd_mach_am33_2: | |
3923 | val = E_MN10300_MACH_AM33_2; | |
3924 | break; | |
252b5132 RH |
3925 | } |
3926 | ||
3927 | elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); | |
3928 | elf_elfheader (abfd)->e_flags |= val; | |
3929 | } | |
3930 | ||
b34976b6 | 3931 | bfd_boolean |
252b5132 RH |
3932 | _bfd_mn10300_elf_object_p (abfd) |
3933 | bfd *abfd; | |
3934 | { | |
3935 | bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, | |
010ac81f | 3936 | elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); |
b34976b6 | 3937 | return TRUE; |
252b5132 RH |
3938 | } |
3939 | ||
3940 | /* Merge backend specific data from an object file to the output | |
3941 | object file when linking. */ | |
3942 | ||
b34976b6 | 3943 | bfd_boolean |
252b5132 RH |
3944 | _bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) |
3945 | bfd *ibfd; | |
3946 | bfd *obfd; | |
3947 | { | |
3948 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3949 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 3950 | return TRUE; |
252b5132 RH |
3951 | |
3952 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
3953 | && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
3954 | { | |
3955 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
3956 | bfd_get_mach (ibfd))) | |
b34976b6 | 3957 | return FALSE; |
252b5132 RH |
3958 | } |
3959 | ||
b34976b6 | 3960 | return TRUE; |
252b5132 RH |
3961 | } |
3962 | ||
03a12831 AO |
3963 | #define PLT0_ENTRY_SIZE 15 |
3964 | #define PLT_ENTRY_SIZE 20 | |
3965 | #define PIC_PLT_ENTRY_SIZE 24 | |
3966 | ||
3967 | static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = | |
3968 | { | |
3969 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ | |
3970 | 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ | |
3971 | 0xf0, 0xf4, /* jmp (a0) */ | |
3972 | }; | |
3973 | ||
3974 | static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = | |
3975 | { | |
3976 | 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ | |
3977 | 0xf0, 0xf4, /* jmp (a0) */ | |
3978 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
3979 | 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ | |
3980 | }; | |
3981 | ||
3982 | static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = | |
3983 | { | |
3984 | 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ | |
3985 | 0xf0, 0xf4, /* jmp (a0) */ | |
3986 | 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ | |
3987 | 0xf8, 0x22, 8, /* mov (8,a2),a0 */ | |
3988 | 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ | |
3989 | 0xf0, 0xf4, /* jmp (a0) */ | |
3990 | }; | |
3991 | ||
3992 | /* Return size of the first PLT entry. */ | |
3993 | #define elf_mn10300_sizeof_plt0(info) \ | |
3994 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) | |
3995 | ||
3996 | /* Return size of a PLT entry. */ | |
3997 | #define elf_mn10300_sizeof_plt(info) \ | |
3998 | (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) | |
3999 | ||
4000 | /* Return offset of the PLT0 address in an absolute PLT entry. */ | |
4001 | #define elf_mn10300_plt_plt0_offset(info) 16 | |
4002 | ||
4003 | /* Return offset of the linker in PLT0 entry. */ | |
4004 | #define elf_mn10300_plt0_linker_offset(info) 2 | |
4005 | ||
4006 | /* Return offset of the GOT id in PLT0 entry. */ | |
4007 | #define elf_mn10300_plt0_gotid_offset(info) 9 | |
4008 | ||
4009 | /* Return offset of the tempoline in PLT entry */ | |
4010 | #define elf_mn10300_plt_temp_offset(info) 8 | |
4011 | ||
4012 | /* Return offset of the symbol in PLT entry. */ | |
4013 | #define elf_mn10300_plt_symbol_offset(info) 2 | |
4014 | ||
4015 | /* Return offset of the relocation in PLT entry. */ | |
4016 | #define elf_mn10300_plt_reloc_offset(info) 11 | |
4017 | ||
4018 | /* The name of the dynamic interpreter. This is put in the .interp | |
4019 | section. */ | |
4020 | ||
4021 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
4022 | ||
4023 | /* Create dynamic sections when linking against a dynamic object. */ | |
4024 | ||
4025 | static bfd_boolean | |
4026 | _bfd_mn10300_elf_create_dynamic_sections (abfd, info) | |
4027 | bfd *abfd; | |
4028 | struct bfd_link_info *info; | |
4029 | { | |
4030 | flagword flags; | |
4031 | asection * s; | |
9c5bfbb7 | 4032 | const struct elf_backend_data * bed = get_elf_backend_data (abfd); |
03a12831 AO |
4033 | int ptralign = 0; |
4034 | ||
4035 | switch (bed->s->arch_size) | |
4036 | { | |
4037 | case 32: | |
4038 | ptralign = 2; | |
4039 | break; | |
4040 | ||
4041 | case 64: | |
4042 | ptralign = 3; | |
4043 | break; | |
4044 | ||
4045 | default: | |
4046 | bfd_set_error (bfd_error_bad_value); | |
4047 | return FALSE; | |
4048 | } | |
4049 | ||
4050 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
4051 | .rel[a].bss sections. */ | |
4052 | ||
4053 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4054 | | SEC_LINKER_CREATED); | |
4055 | ||
4056 | s = bfd_make_section (abfd, | |
4057 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); | |
4058 | if (s == NULL | |
4059 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
4060 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
4061 | return FALSE; | |
4062 | ||
4063 | if (! _bfd_mn10300_elf_create_got_section (abfd, info)) | |
4064 | return FALSE; | |
4065 | ||
4066 | { | |
4067 | const char * secname; | |
4068 | char * relname; | |
4069 | flagword secflags; | |
4070 | asection * sec; | |
4071 | ||
4072 | for (sec = abfd->sections; sec; sec = sec->next) | |
4073 | { | |
4074 | secflags = bfd_get_section_flags (abfd, sec); | |
4075 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
4076 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
4077 | continue; | |
4078 | ||
4079 | secname = bfd_get_section_name (abfd, sec); | |
4080 | relname = (char *) bfd_malloc (strlen (secname) + 6); | |
4081 | strcpy (relname, ".rela"); | |
4082 | strcat (relname, secname); | |
4083 | ||
4084 | s = bfd_make_section (abfd, relname); | |
4085 | if (s == NULL | |
4086 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
4087 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
4088 | return FALSE; | |
4089 | } | |
4090 | } | |
4091 | ||
4092 | if (bed->want_dynbss) | |
4093 | { | |
4094 | /* The .dynbss section is a place to put symbols which are defined | |
4095 | by dynamic objects, are referenced by regular objects, and are | |
4096 | not functions. We must allocate space for them in the process | |
4097 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
4098 | initialize them at run time. The linker script puts the .dynbss | |
4099 | section into the .bss section of the final image. */ | |
4100 | s = bfd_make_section (abfd, ".dynbss"); | |
4101 | if (s == NULL | |
4102 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) | |
4103 | return FALSE; | |
4104 | ||
4105 | /* The .rel[a].bss section holds copy relocs. This section is not | |
4106 | normally needed. We need to create it here, though, so that the | |
4107 | linker will map it to an output section. We can't just create it | |
4108 | only if we need it, because we will not know whether we need it | |
4109 | until we have seen all the input files, and the first time the | |
4110 | main linker code calls BFD after examining all the input files | |
4111 | (size_dynamic_sections) the input sections have already been | |
4112 | mapped to the output sections. If the section turns out not to | |
4113 | be needed, we can discard it later. We will never need this | |
4114 | section when generating a shared object, since they do not use | |
4115 | copy relocs. */ | |
4116 | if (! info->shared) | |
4117 | { | |
4118 | s = bfd_make_section (abfd, | |
4119 | (bed->default_use_rela_p | |
4120 | ? ".rela.bss" : ".rel.bss")); | |
4121 | if (s == NULL | |
4122 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
4123 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
4124 | return FALSE; | |
4125 | } | |
4126 | } | |
4127 | ||
4128 | return TRUE; | |
4129 | } | |
4130 | \f | |
4131 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4132 | regular object. The current definition is in some section of the | |
4133 | dynamic object, but we're not including those sections. We have to | |
4134 | change the definition to something the rest of the link can | |
4135 | understand. */ | |
4136 | ||
4137 | static bfd_boolean | |
4138 | _bfd_mn10300_elf_adjust_dynamic_symbol (info, h) | |
4139 | struct bfd_link_info * info; | |
4140 | struct elf_link_hash_entry * h; | |
4141 | { | |
4142 | bfd * dynobj; | |
4143 | asection * s; | |
4144 | unsigned int power_of_two; | |
4145 | ||
4146 | dynobj = elf_hash_table (info)->dynobj; | |
4147 | ||
4148 | /* Make sure we know what is going on here. */ | |
4149 | BFD_ASSERT (dynobj != NULL | |
4150 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) | |
4151 | || h->weakdef != NULL | |
4152 | || ((h->elf_link_hash_flags | |
4153 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
4154 | && (h->elf_link_hash_flags | |
4155 | & ELF_LINK_HASH_REF_REGULAR) != 0 | |
4156 | && (h->elf_link_hash_flags | |
4157 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); | |
4158 | ||
4159 | /* If this is a function, put it in the procedure linkage table. We | |
4160 | will fill in the contents of the procedure linkage table later, | |
4161 | when we know the address of the .got section. */ | |
4162 | if (h->type == STT_FUNC | |
4163 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
4164 | { | |
4165 | if (! info->shared | |
4166 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
4167 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0) | |
4168 | { | |
4169 | /* This case can occur if we saw a PLT reloc in an input | |
4170 | file, but the symbol was never referred to by a dynamic | |
4171 | object. In such a case, we don't actually need to build | |
4172 | a procedure linkage table, and we can just do a REL32 | |
4173 | reloc instead. */ | |
4174 | BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0); | |
4175 | return TRUE; | |
4176 | } | |
4177 | ||
4178 | /* Make sure this symbol is output as a dynamic symbol. */ | |
4179 | if (h->dynindx == -1) | |
4180 | { | |
4181 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
4182 | return FALSE; | |
4183 | } | |
4184 | ||
4185 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
4186 | BFD_ASSERT (s != NULL); | |
4187 | ||
4188 | /* If this is the first .plt entry, make room for the special | |
4189 | first entry. */ | |
4190 | if (s->_raw_size == 0) | |
4191 | s->_raw_size += elf_mn10300_sizeof_plt0 (info); | |
4192 | ||
4193 | /* If this symbol is not defined in a regular file, and we are | |
4194 | not generating a shared library, then set the symbol to this | |
4195 | location in the .plt. This is required to make function | |
4196 | pointers compare as equal between the normal executable and | |
4197 | the shared library. */ | |
4198 | if (! info->shared | |
4199 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
4200 | { | |
4201 | h->root.u.def.section = s; | |
4202 | h->root.u.def.value = s->_raw_size; | |
4203 | } | |
4204 | ||
4205 | h->plt.offset = s->_raw_size; | |
4206 | ||
4207 | /* Make room for this entry. */ | |
4208 | s->_raw_size += elf_mn10300_sizeof_plt (info); | |
4209 | ||
4210 | /* We also need to make an entry in the .got.plt section, which | |
4211 | will be placed in the .got section by the linker script. */ | |
4212 | ||
4213 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4214 | BFD_ASSERT (s != NULL); | |
4215 | s->_raw_size += 4; | |
4216 | ||
4217 | /* We also need to make an entry in the .rela.plt section. */ | |
4218 | ||
4219 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4220 | BFD_ASSERT (s != NULL); | |
4221 | s->_raw_size += sizeof (Elf32_External_Rela); | |
4222 | ||
4223 | return TRUE; | |
4224 | } | |
4225 | ||
4226 | /* If this is a weak symbol, and there is a real definition, the | |
4227 | processor independent code will have arranged for us to see the | |
4228 | real definition first, and we can just use the same value. */ | |
4229 | if (h->weakdef != NULL) | |
4230 | { | |
4231 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
4232 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
4233 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
4234 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
4235 | return TRUE; | |
4236 | } | |
4237 | ||
4238 | /* This is a reference to a symbol defined by a dynamic object which | |
4239 | is not a function. */ | |
4240 | ||
4241 | /* If we are creating a shared library, we must presume that the | |
4242 | only references to the symbol are via the global offset table. | |
4243 | For such cases we need not do anything here; the relocations will | |
4244 | be handled correctly by relocate_section. */ | |
4245 | if (info->shared) | |
4246 | return TRUE; | |
4247 | ||
4248 | /* If there are no references to this symbol that do not use the | |
4249 | GOT, we don't need to generate a copy reloc. */ | |
4250 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
4251 | return TRUE; | |
4252 | ||
4253 | /* We must allocate the symbol in our .dynbss section, which will | |
4254 | become part of the .bss section of the executable. There will be | |
4255 | an entry for this symbol in the .dynsym section. The dynamic | |
4256 | object will contain position independent code, so all references | |
4257 | from the dynamic object to this symbol will go through the global | |
4258 | offset table. The dynamic linker will use the .dynsym entry to | |
4259 | determine the address it must put in the global offset table, so | |
4260 | both the dynamic object and the regular object will refer to the | |
4261 | same memory location for the variable. */ | |
4262 | ||
4263 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
4264 | BFD_ASSERT (s != NULL); | |
4265 | ||
4266 | /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to | |
4267 | copy the initial value out of the dynamic object and into the | |
4268 | runtime process image. We need to remember the offset into the | |
4269 | .rela.bss section we are going to use. */ | |
4270 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4271 | { | |
4272 | asection * srel; | |
4273 | ||
4274 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
4275 | BFD_ASSERT (srel != NULL); | |
4276 | srel->_raw_size += sizeof (Elf32_External_Rela); | |
4277 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; | |
4278 | } | |
4279 | ||
4280 | /* We need to figure out the alignment required for this symbol. I | |
4281 | have no idea how ELF linkers handle this. */ | |
4282 | power_of_two = bfd_log2 (h->size); | |
4283 | if (power_of_two > 3) | |
4284 | power_of_two = 3; | |
4285 | ||
4286 | /* Apply the required alignment. */ | |
4287 | s->_raw_size = BFD_ALIGN (s->_raw_size, | |
4288 | (bfd_size_type) (1 << power_of_two)); | |
4289 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
4290 | { | |
4291 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
4292 | return FALSE; | |
4293 | } | |
4294 | ||
4295 | /* Define the symbol as being at this point in the section. */ | |
4296 | h->root.u.def.section = s; | |
4297 | h->root.u.def.value = s->_raw_size; | |
4298 | ||
4299 | /* Increment the section size to make room for the symbol. */ | |
4300 | s->_raw_size += h->size; | |
4301 | ||
4302 | return TRUE; | |
4303 | } | |
4304 | ||
4305 | /* This function is called via elf32_mn10300_link_hash_traverse if we are | |
4306 | creating a shared object with -Bsymbolic. It discards the space | |
4307 | allocated to copy PC relative relocs against symbols which are | |
4308 | defined in regular objects. We allocated space for them in the | |
4309 | check_relocs routine, but we won't fill them in in the | |
4310 | relocate_section routine. */ | |
4311 | ||
4312 | static bfd_boolean | |
4313 | _bfd_mn10300_elf_discard_copies (h, info) | |
4314 | struct elf32_mn10300_link_hash_entry *h; | |
4315 | struct bfd_link_info *info; | |
4316 | { | |
4317 | struct elf_mn10300_pcrel_relocs_copied *s; | |
4318 | ||
4319 | /* If a symbol has been forced local or we have found a regular | |
4320 | definition for the symbolic link case, then we won't be needing | |
4321 | any relocs. */ | |
4322 | if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
4323 | && ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
4324 | || info->symbolic)) | |
4325 | { | |
4326 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
4327 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel); | |
4328 | } | |
4329 | ||
4330 | return TRUE; | |
4331 | } | |
4332 | ||
4333 | /* Set the sizes of the dynamic sections. */ | |
4334 | ||
4335 | static bfd_boolean | |
4336 | _bfd_mn10300_elf_size_dynamic_sections (output_bfd, info) | |
4337 | bfd * output_bfd; | |
4338 | struct bfd_link_info * info; | |
4339 | { | |
4340 | bfd * dynobj; | |
4341 | asection * s; | |
4342 | bfd_boolean plt; | |
4343 | bfd_boolean relocs; | |
4344 | bfd_boolean reltext; | |
4345 | ||
4346 | dynobj = elf_hash_table (info)->dynobj; | |
4347 | BFD_ASSERT (dynobj != NULL); | |
4348 | ||
4349 | if (elf_hash_table (info)->dynamic_sections_created) | |
4350 | { | |
4351 | /* Set the contents of the .interp section to the interpreter. */ | |
4352 | if (! info->shared) | |
4353 | { | |
4354 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4355 | BFD_ASSERT (s != NULL); | |
4356 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4357 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4358 | } | |
4359 | } | |
4360 | else | |
4361 | { | |
4362 | /* We may have created entries in the .rela.got section. | |
4363 | However, if we are not creating the dynamic sections, we will | |
4364 | not actually use these entries. Reset the size of .rela.got, | |
4365 | which will cause it to get stripped from the output file | |
4366 | below. */ | |
4367 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4368 | if (s != NULL) | |
4369 | s->_raw_size = 0; | |
4370 | } | |
4371 | ||
4372 | /* If this is a -Bsymbolic shared link, then we need to discard all | |
4373 | PC relative relocs against symbols defined in a regular object. | |
4374 | We allocated space for them in the check_relocs routine, but we | |
4375 | will not fill them in in the relocate_section routine. */ | |
4376 | if (info->shared && info->symbolic) | |
4377 | elf32_mn10300_link_hash_traverse (elf32_mn10300_hash_table (info), | |
4378 | _bfd_mn10300_elf_discard_copies, | |
4379 | info); | |
4380 | ||
4381 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
4382 | determined the sizes of the various dynamic sections. Allocate | |
4383 | memory for them. */ | |
4384 | plt = FALSE; | |
4385 | relocs = FALSE; | |
4386 | reltext = FALSE; | |
4387 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4388 | { | |
4389 | const char * name; | |
4390 | bfd_boolean strip; | |
4391 | ||
4392 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4393 | continue; | |
4394 | ||
4395 | /* It's OK to base decisions on the section name, because none | |
4396 | of the dynobj section names depend upon the input files. */ | |
4397 | name = bfd_get_section_name (dynobj, s); | |
4398 | ||
4399 | strip = FALSE; | |
4400 | ||
4401 | if (strcmp (name, ".plt") == 0) | |
4402 | { | |
4403 | if (s->_raw_size == 0) | |
4404 | /* Strip this section if we don't need it; see the | |
4405 | comment below. */ | |
4406 | strip = TRUE; | |
4407 | else | |
4408 | /* Remember whether there is a PLT. */ | |
4409 | plt = TRUE; | |
4410 | } | |
4411 | else if (strncmp (name, ".rela", 5) == 0) | |
4412 | { | |
4413 | if (s->_raw_size == 0) | |
4414 | { | |
4415 | /* If we don't need this section, strip it from the | |
4416 | output file. This is mostly to handle .rela.bss and | |
4417 | .rela.plt. We must create both sections in | |
4418 | create_dynamic_sections, because they must be created | |
4419 | before the linker maps input sections to output | |
4420 | sections. The linker does that before | |
4421 | adjust_dynamic_symbol is called, and it is that | |
4422 | function which decides whether anything needs to go | |
4423 | into these sections. */ | |
4424 | strip = TRUE; | |
4425 | } | |
4426 | else | |
4427 | { | |
4428 | asection * target; | |
4429 | ||
4430 | /* Remember whether there are any reloc sections other | |
4431 | than .rela.plt. */ | |
4432 | if (strcmp (name, ".rela.plt") != 0) | |
4433 | { | |
4434 | const char * outname; | |
4435 | ||
4436 | relocs = TRUE; | |
4437 | ||
4438 | /* If this relocation section applies to a read only | |
4439 | section, then we probably need a DT_TEXTREL | |
4440 | entry. The entries in the .rela.plt section | |
4441 | really apply to the .got section, which we | |
4442 | created ourselves and so know is not readonly. */ | |
4443 | outname = bfd_get_section_name (output_bfd, | |
4444 | s->output_section); | |
4445 | target = bfd_get_section_by_name (output_bfd, outname + 5); | |
4446 | if (target != NULL | |
4447 | && (target->flags & SEC_READONLY) != 0 | |
4448 | && (target->flags & SEC_ALLOC) != 0) | |
4449 | reltext = TRUE; | |
4450 | } | |
4451 | ||
4452 | /* We use the reloc_count field as a counter if we need | |
4453 | to copy relocs into the output file. */ | |
4454 | s->reloc_count = 0; | |
4455 | } | |
4456 | } | |
4457 | else if (strncmp (name, ".got", 4) != 0) | |
4458 | /* It's not one of our sections, so don't allocate space. */ | |
4459 | continue; | |
4460 | ||
4461 | if (strip) | |
4462 | { | |
4463 | _bfd_strip_section_from_output (info, s); | |
4464 | continue; | |
4465 | } | |
4466 | ||
4467 | /* Allocate memory for the section contents. We use bfd_zalloc | |
4468 | here in case unused entries are not reclaimed before the | |
4469 | section's contents are written out. This should not happen, | |
4470 | but this way if it does, we get a R_MN10300_NONE reloc | |
4471 | instead of garbage. */ | |
4472 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
4473 | if (s->contents == NULL && s->_raw_size != 0) | |
4474 | return FALSE; | |
4475 | } | |
4476 | ||
4477 | if (elf_hash_table (info)->dynamic_sections_created) | |
4478 | { | |
4479 | /* Add some entries to the .dynamic section. We fill in the | |
4480 | values later, in _bfd_mn10300_elf_finish_dynamic_sections, | |
4481 | but we must add the entries now so that we get the correct | |
4482 | size for the .dynamic section. The DT_DEBUG entry is filled | |
4483 | in by the dynamic linker and used by the debugger. */ | |
4484 | if (! info->shared) | |
4485 | { | |
4486 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) | |
4487 | return FALSE; | |
4488 | } | |
4489 | ||
4490 | if (plt) | |
4491 | { | |
4492 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) | |
4493 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
4494 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
4495 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) | |
4496 | return FALSE; | |
4497 | } | |
4498 | ||
4499 | if (relocs) | |
4500 | { | |
4501 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) | |
4502 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) | |
4503 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, | |
4504 | sizeof (Elf32_External_Rela))) | |
4505 | return FALSE; | |
4506 | } | |
4507 | ||
4508 | if (reltext) | |
4509 | { | |
4510 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) | |
4511 | return FALSE; | |
4512 | } | |
4513 | } | |
4514 | ||
4515 | return TRUE; | |
4516 | } | |
4517 | ||
4518 | /* Finish up dynamic symbol handling. We set the contents of various | |
4519 | dynamic sections here. */ | |
4520 | ||
4521 | static bfd_boolean | |
4522 | _bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym) | |
4523 | bfd * output_bfd; | |
4524 | struct bfd_link_info * info; | |
4525 | struct elf_link_hash_entry * h; | |
4526 | Elf_Internal_Sym * sym; | |
4527 | { | |
4528 | bfd * dynobj; | |
4529 | ||
4530 | dynobj = elf_hash_table (info)->dynobj; | |
4531 | ||
4532 | if (h->plt.offset != (bfd_vma) -1) | |
4533 | { | |
4534 | asection * splt; | |
4535 | asection * sgot; | |
4536 | asection * srel; | |
4537 | bfd_vma plt_index; | |
4538 | bfd_vma got_offset; | |
4539 | Elf_Internal_Rela rel; | |
4540 | ||
4541 | /* This symbol has an entry in the procedure linkage table. Set | |
4542 | it up. */ | |
4543 | ||
4544 | BFD_ASSERT (h->dynindx != -1); | |
4545 | ||
4546 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4547 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4548 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4549 | BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL); | |
4550 | ||
4551 | /* Get the index in the procedure linkage table which | |
4552 | corresponds to this symbol. This is the index of this symbol | |
4553 | in all the symbols for which we are making plt entries. The | |
4554 | first entry in the procedure linkage table is reserved. */ | |
4555 | plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info)) | |
4556 | / elf_mn10300_sizeof_plt (info)); | |
4557 | ||
4558 | /* Get the offset into the .got table of the entry that | |
4559 | corresponds to this function. Each .got entry is 4 bytes. | |
4560 | The first three are reserved. */ | |
4561 | got_offset = (plt_index + 3) * 4; | |
4562 | ||
4563 | /* Fill in the entry in the procedure linkage table. */ | |
4564 | if (! info->shared) | |
4565 | { | |
4566 | memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, | |
4567 | elf_mn10300_sizeof_plt (info)); | |
4568 | bfd_put_32 (output_bfd, | |
4569 | (sgot->output_section->vma | |
4570 | + sgot->output_offset | |
4571 | + got_offset), | |
4572 | (splt->contents + h->plt.offset | |
4573 | + elf_mn10300_plt_symbol_offset (info))); | |
4574 | ||
4575 | bfd_put_32 (output_bfd, | |
4576 | (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), | |
4577 | (splt->contents + h->plt.offset | |
4578 | + elf_mn10300_plt_plt0_offset (info))); | |
4579 | } | |
4580 | else | |
4581 | { | |
4582 | memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, | |
4583 | elf_mn10300_sizeof_plt (info)); | |
4584 | ||
4585 | bfd_put_32 (output_bfd, got_offset, | |
4586 | (splt->contents + h->plt.offset | |
4587 | + elf_mn10300_plt_symbol_offset (info))); | |
4588 | } | |
4589 | ||
4590 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
4591 | (splt->contents + h->plt.offset | |
4592 | + elf_mn10300_plt_reloc_offset (info))); | |
4593 | ||
4594 | /* Fill in the entry in the global offset table. */ | |
4595 | bfd_put_32 (output_bfd, | |
4596 | (splt->output_section->vma | |
4597 | + splt->output_offset | |
4598 | + h->plt.offset | |
4599 | + elf_mn10300_plt_temp_offset (info)), | |
4600 | sgot->contents + got_offset); | |
4601 | ||
4602 | /* Fill in the entry in the .rela.plt section. */ | |
4603 | rel.r_offset = (sgot->output_section->vma | |
4604 | + sgot->output_offset | |
4605 | + got_offset); | |
4606 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); | |
4607 | rel.r_addend = 0; | |
4608 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4609 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4610 | + plt_index)); | |
03a12831 AO |
4611 | |
4612 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
4613 | /* Mark the symbol as undefined, rather than as defined in | |
4614 | the .plt section. Leave the value alone. */ | |
4615 | sym->st_shndx = SHN_UNDEF; | |
4616 | } | |
4617 | ||
4618 | if (h->got.offset != (bfd_vma) -1) | |
4619 | { | |
4620 | asection * sgot; | |
4621 | asection * srel; | |
4622 | Elf_Internal_Rela rel; | |
4623 | ||
4624 | /* This symbol has an entry in the global offset table. Set it up. */ | |
4625 | ||
4626 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4627 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4628 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
4629 | ||
4630 | rel.r_offset = (sgot->output_section->vma | |
4631 | + sgot->output_offset | |
4632 | + (h->got.offset &~ 1)); | |
4633 | ||
4634 | /* If this is a -Bsymbolic link, and the symbol is defined | |
4635 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4636 | the symbol was forced to be local because of a version file. | |
4637 | The entry in the global offset table will already have been | |
4638 | initialized in the relocate_section function. */ | |
4639 | if (info->shared | |
4640 | && (info->symbolic || h->dynindx == -1) | |
4641 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
4642 | { | |
4643 | rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); | |
4644 | rel.r_addend = (h->root.u.def.value | |
4645 | + h->root.u.def.section->output_section->vma | |
4646 | + h->root.u.def.section->output_offset); | |
4647 | } | |
4648 | else | |
4649 | { | |
4650 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
4651 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); | |
4652 | rel.r_addend = 0; | |
4653 | } | |
4654 | ||
4655 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4656 | (bfd_byte *) ((Elf32_External_Rela *) srel->contents |
4657 | + srel->reloc_count)); | |
03a12831 AO |
4658 | ++ srel->reloc_count; |
4659 | } | |
4660 | ||
4661 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
4662 | { | |
4663 | asection * s; | |
4664 | Elf_Internal_Rela rel; | |
4665 | ||
4666 | /* This symbol needs a copy reloc. Set it up. */ | |
4667 | BFD_ASSERT (h->dynindx != -1 | |
4668 | && (h->root.type == bfd_link_hash_defined | |
4669 | || h->root.type == bfd_link_hash_defweak)); | |
4670 | ||
4671 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
4672 | ".rela.bss"); | |
4673 | BFD_ASSERT (s != NULL); | |
4674 | ||
4675 | rel.r_offset = (h->root.u.def.value | |
4676 | + h->root.u.def.section->output_section->vma | |
4677 | + h->root.u.def.section->output_offset); | |
4678 | rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); | |
4679 | rel.r_addend = 0; | |
4680 | bfd_elf32_swap_reloca_out (output_bfd, &rel, | |
560e09e9 NC |
4681 | (bfd_byte *) ((Elf32_External_Rela *) s->contents |
4682 | + s->reloc_count)); | |
03a12831 AO |
4683 | ++ s->reloc_count; |
4684 | } | |
4685 | ||
4686 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
4687 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4688 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
4689 | sym->st_shndx = SHN_ABS; | |
4690 | ||
4691 | return TRUE; | |
4692 | } | |
4693 | ||
4694 | /* Finish up the dynamic sections. */ | |
4695 | ||
4696 | static bfd_boolean | |
4697 | _bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info) | |
4698 | bfd * output_bfd; | |
4699 | struct bfd_link_info * info; | |
4700 | { | |
4701 | bfd * dynobj; | |
4702 | asection * sgot; | |
4703 | asection * sdyn; | |
4704 | ||
4705 | dynobj = elf_hash_table (info)->dynobj; | |
4706 | ||
4707 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
4708 | BFD_ASSERT (sgot != NULL); | |
4709 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
4710 | ||
4711 | if (elf_hash_table (info)->dynamic_sections_created) | |
4712 | { | |
4713 | asection * splt; | |
4714 | Elf32_External_Dyn * dyncon; | |
4715 | Elf32_External_Dyn * dynconend; | |
4716 | ||
4717 | BFD_ASSERT (sdyn != NULL); | |
4718 | ||
4719 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
4720 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
4721 | ||
4722 | for (; dyncon < dynconend; dyncon++) | |
4723 | { | |
4724 | Elf_Internal_Dyn dyn; | |
4725 | const char * name; | |
4726 | asection * s; | |
4727 | ||
4728 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4729 | ||
4730 | switch (dyn.d_tag) | |
4731 | { | |
4732 | default: | |
4733 | break; | |
4734 | ||
4735 | case DT_PLTGOT: | |
4736 | name = ".got"; | |
4737 | goto get_vma; | |
4738 | ||
4739 | case DT_JMPREL: | |
4740 | name = ".rela.plt"; | |
4741 | get_vma: | |
4742 | s = bfd_get_section_by_name (output_bfd, name); | |
4743 | BFD_ASSERT (s != NULL); | |
4744 | dyn.d_un.d_ptr = s->vma; | |
4745 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4746 | break; | |
4747 | ||
4748 | case DT_PLTRELSZ: | |
4749 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4750 | BFD_ASSERT (s != NULL); | |
4751 | if (s->_cooked_size != 0) | |
4752 | dyn.d_un.d_val = s->_cooked_size; | |
4753 | else | |
4754 | dyn.d_un.d_val = s->_raw_size; | |
4755 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4756 | break; | |
4757 | ||
4758 | case DT_RELASZ: | |
4759 | /* My reading of the SVR4 ABI indicates that the | |
4760 | procedure linkage table relocs (DT_JMPREL) should be | |
4761 | included in the overall relocs (DT_RELA). This is | |
4762 | what Solaris does. However, UnixWare can not handle | |
4763 | that case. Therefore, we override the DT_RELASZ entry | |
4764 | here to make it not include the JMPREL relocs. Since | |
4765 | the linker script arranges for .rela.plt to follow all | |
4766 | other relocation sections, we don't have to worry | |
4767 | about changing the DT_RELA entry. */ | |
4768 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4769 | if (s != NULL) | |
4770 | { | |
4771 | if (s->_cooked_size != 0) | |
4772 | dyn.d_un.d_val -= s->_cooked_size; | |
4773 | else | |
4774 | dyn.d_un.d_val -= s->_raw_size; | |
4775 | } | |
4776 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4777 | break; | |
4778 | } | |
4779 | } | |
4780 | ||
4781 | /* Fill in the first entry in the procedure linkage table. */ | |
4782 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4783 | if (splt && splt->_raw_size > 0) | |
4784 | { | |
4785 | if (info->shared) | |
4786 | { | |
4787 | memcpy (splt->contents, elf_mn10300_pic_plt_entry, | |
4788 | elf_mn10300_sizeof_plt (info)); | |
4789 | } | |
4790 | else | |
4791 | { | |
4792 | memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); | |
4793 | bfd_put_32 (output_bfd, | |
4794 | sgot->output_section->vma + sgot->output_offset + 4, | |
4795 | splt->contents + elf_mn10300_plt0_gotid_offset (info)); | |
4796 | bfd_put_32 (output_bfd, | |
4797 | sgot->output_section->vma + sgot->output_offset + 8, | |
4798 | splt->contents + elf_mn10300_plt0_linker_offset (info)); | |
4799 | } | |
4800 | ||
4801 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4802 | really seem like the right value. */ | |
4803 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
4804 | } | |
4805 | } | |
4806 | ||
4807 | /* Fill in the first three entries in the global offset table. */ | |
4808 | if (sgot->_raw_size > 0) | |
4809 | { | |
4810 | if (sdyn == NULL) | |
4811 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4812 | else | |
4813 | bfd_put_32 (output_bfd, | |
4814 | sdyn->output_section->vma + sdyn->output_offset, | |
4815 | sgot->contents); | |
4816 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4817 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4818 | } | |
4819 | ||
4820 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4821 | ||
4822 | return TRUE; | |
4823 | } | |
4824 | ||
73c3cd1c | 4825 | #ifndef ELF_ARCH |
252b5132 RH |
4826 | #define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec |
4827 | #define TARGET_LITTLE_NAME "elf32-mn10300" | |
4828 | #define ELF_ARCH bfd_arch_mn10300 | |
6f4514dc AO |
4829 | #define ELF_MACHINE_CODE EM_MN10300 |
4830 | #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 | |
252b5132 | 4831 | #define ELF_MAXPAGESIZE 0x1000 |
73c3cd1c | 4832 | #endif |
252b5132 RH |
4833 | |
4834 | #define elf_info_to_howto mn10300_info_to_howto | |
4835 | #define elf_info_to_howto_rel 0 | |
4836 | #define elf_backend_can_gc_sections 1 | |
b491616a | 4837 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4838 | #define elf_backend_check_relocs mn10300_elf_check_relocs |
4839 | #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook | |
4840 | #define elf_backend_relocate_section mn10300_elf_relocate_section | |
4841 | #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section | |
4842 | #define bfd_elf32_bfd_get_relocated_section_contents \ | |
4843 | mn10300_elf_get_relocated_section_contents | |
4844 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4845 | elf32_mn10300_link_hash_table_create | |
e2d34d7d DJ |
4846 | #define bfd_elf32_bfd_link_hash_table_free \ |
4847 | elf32_mn10300_link_hash_table_free | |
252b5132 | 4848 | |
73c3cd1c | 4849 | #ifndef elf_symbol_leading_char |
252b5132 | 4850 | #define elf_symbol_leading_char '_' |
73c3cd1c | 4851 | #endif |
252b5132 RH |
4852 | |
4853 | /* So we can set bits in e_flags. */ | |
4854 | #define elf_backend_final_write_processing \ | |
4855 | _bfd_mn10300_elf_final_write_processing | |
4856 | #define elf_backend_object_p _bfd_mn10300_elf_object_p | |
4857 | ||
4858 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
4859 | _bfd_mn10300_elf_merge_private_bfd_data | |
4860 | ||
03a12831 AO |
4861 | #define elf_backend_can_gc_sections 1 |
4862 | #define elf_backend_create_dynamic_sections \ | |
4863 | _bfd_mn10300_elf_create_dynamic_sections | |
4864 | #define elf_backend_adjust_dynamic_symbol \ | |
4865 | _bfd_mn10300_elf_adjust_dynamic_symbol | |
4866 | #define elf_backend_size_dynamic_sections \ | |
4867 | _bfd_mn10300_elf_size_dynamic_sections | |
4868 | #define elf_backend_finish_dynamic_symbol \ | |
4869 | _bfd_mn10300_elf_finish_dynamic_symbol | |
4870 | #define elf_backend_finish_dynamic_sections \ | |
4871 | _bfd_mn10300_elf_finish_dynamic_sections | |
4872 | ||
4873 | #define elf_backend_want_got_plt 1 | |
4874 | #define elf_backend_plt_readonly 1 | |
4875 | #define elf_backend_want_plt_sym 0 | |
4876 | #define elf_backend_got_header_size 12 | |
4877 | #define elf_backend_plt_header_size PLT0_ENTRY_SIZE | |
4878 | ||
252b5132 | 4879 | #include "elf32-target.h" |