gprofng: fix build with -mx32
[binutils-gdb/blckswan.git] / bfd / elf-m10300.c
blob8184ce9d50c16047c596753c90e86868bfa72bf2
1 /* Matsushita 10300 specific support for 32-bit ELF
2 Copyright (C) 1996-2022 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/mn10300.h"
26 #include "libiberty.h"
28 /* The mn10300 linker needs to keep track of the number of relocs that
29 it decides to copy in check_relocs for each symbol. This is so
30 that it can discard PC relative relocs if it doesn't need them when
31 linking with -Bsymbolic. We store the information in a field
32 extending the regular ELF linker hash table. */
34 struct elf32_mn10300_link_hash_entry
36 /* The basic elf link hash table entry. */
37 struct elf_link_hash_entry root;
39 /* For function symbols, the number of times this function is
40 called directly (ie by name). */
41 unsigned int direct_calls;
43 /* For function symbols, the size of this function's stack
44 (if <= 255 bytes). We stuff this into "call" instructions
45 to this target when it's valid and profitable to do so.
47 This does not include stack allocated by movm! */
48 unsigned char stack_size;
50 /* For function symbols, arguments (if any) for movm instruction
51 in the prologue. We stuff this value into "call" instructions
52 to the target when it's valid and profitable to do so. */
53 unsigned char movm_args;
55 /* For function symbols, the amount of stack space that would be allocated
56 by the movm instruction. This is redundant with movm_args, but we
57 add it to the hash table to avoid computing it over and over. */
58 unsigned char movm_stack_size;
60 /* When set, convert all "call" instructions to this target into "calls"
61 instructions. */
62 #define MN10300_CONVERT_CALL_TO_CALLS 0x1
64 /* Used to mark functions which have had redundant parts of their
65 prologue deleted. */
66 #define MN10300_DELETED_PROLOGUE_BYTES 0x2
67 unsigned char flags;
69 /* Calculated value. */
70 bfd_vma value;
72 #define GOT_UNKNOWN 0
73 #define GOT_NORMAL 1
74 #define GOT_TLS_GD 2
75 #define GOT_TLS_LD 3
76 #define GOT_TLS_IE 4
77 /* Used to distinguish GOT entries for TLS types from normal GOT entries. */
78 unsigned char tls_type;
81 /* We derive a hash table from the main elf linker hash table so
82 we can store state variables and a secondary hash table without
83 resorting to global variables. */
84 struct elf32_mn10300_link_hash_table
86 /* The main hash table. */
87 struct elf_link_hash_table root;
89 /* A hash table for static functions. We could derive a new hash table
90 instead of using the full elf32_mn10300_link_hash_table if we wanted
91 to save some memory. */
92 struct elf32_mn10300_link_hash_table *static_hash_table;
94 /* Random linker state flags. */
95 #define MN10300_HASH_ENTRIES_INITIALIZED 0x1
96 char flags;
97 struct
99 bfd_signed_vma refcount;
100 bfd_vma offset;
101 char got_allocated;
102 char rel_emitted;
103 } tls_ldm_got;
106 #define elf_mn10300_hash_entry(ent) ((struct elf32_mn10300_link_hash_entry *)(ent))
108 struct elf_mn10300_obj_tdata
110 struct elf_obj_tdata root;
112 /* tls_type for each local got entry. */
113 char * local_got_tls_type;
116 #define elf_mn10300_tdata(abfd) \
117 ((struct elf_mn10300_obj_tdata *) (abfd)->tdata.any)
119 #define elf_mn10300_local_got_tls_type(abfd) \
120 (elf_mn10300_tdata (abfd)->local_got_tls_type)
122 #ifndef streq
123 #define streq(a, b) (strcmp ((a),(b)) == 0)
124 #endif
126 /* For MN10300 linker hash table. */
128 /* Get the MN10300 ELF linker hash table from a link_info structure. */
130 #define elf32_mn10300_hash_table(p) \
131 ((is_elf_hash_table ((p)->hash) \
132 && elf_hash_table_id (elf_hash_table (p)) == MN10300_ELF_DATA) \
133 ? (struct elf32_mn10300_link_hash_table *) (p)->hash : NULL)
135 #define elf32_mn10300_link_hash_traverse(table, func, info) \
136 (elf_link_hash_traverse \
137 (&(table)->root, \
138 (bool (*) (struct elf_link_hash_entry *, void *)) (func), \
139 (info)))
141 static reloc_howto_type elf_mn10300_howto_table[] =
143 /* Dummy relocation. Does nothing. */
144 HOWTO (R_MN10300_NONE,
148 false,
150 complain_overflow_dont,
151 bfd_elf_generic_reloc,
152 "R_MN10300_NONE",
153 false,
156 false),
157 /* Standard 32 bit reloc. */
158 HOWTO (R_MN10300_32,
162 false,
164 complain_overflow_bitfield,
165 bfd_elf_generic_reloc,
166 "R_MN10300_32",
167 false,
168 0xffffffff,
169 0xffffffff,
170 false),
171 /* Standard 16 bit reloc. */
172 HOWTO (R_MN10300_16,
176 false,
178 complain_overflow_bitfield,
179 bfd_elf_generic_reloc,
180 "R_MN10300_16",
181 false,
182 0xffff,
183 0xffff,
184 false),
185 /* Standard 8 bit reloc. */
186 HOWTO (R_MN10300_8,
190 false,
192 complain_overflow_bitfield,
193 bfd_elf_generic_reloc,
194 "R_MN10300_8",
195 false,
196 0xff,
197 0xff,
198 false),
199 /* Standard 32bit pc-relative reloc. */
200 HOWTO (R_MN10300_PCREL32,
204 true,
206 complain_overflow_bitfield,
207 bfd_elf_generic_reloc,
208 "R_MN10300_PCREL32",
209 false,
210 0xffffffff,
211 0xffffffff,
212 true),
213 /* Standard 16bit pc-relative reloc. */
214 HOWTO (R_MN10300_PCREL16,
218 true,
220 complain_overflow_bitfield,
221 bfd_elf_generic_reloc,
222 "R_MN10300_PCREL16",
223 false,
224 0xffff,
225 0xffff,
226 true),
227 /* Standard 8 pc-relative reloc. */
228 HOWTO (R_MN10300_PCREL8,
232 true,
234 complain_overflow_bitfield,
235 bfd_elf_generic_reloc,
236 "R_MN10300_PCREL8",
237 false,
238 0xff,
239 0xff,
240 true),
242 /* GNU extension to record C++ vtable hierarchy. */
243 HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
244 0, /* rightshift */
245 0, /* size (0 = byte, 1 = short, 2 = long) */
246 0, /* bitsize */
247 false, /* pc_relative */
248 0, /* bitpos */
249 complain_overflow_dont, /* complain_on_overflow */
250 NULL, /* special_function */
251 "R_MN10300_GNU_VTINHERIT", /* name */
252 false, /* partial_inplace */
253 0, /* src_mask */
254 0, /* dst_mask */
255 false), /* pcrel_offset */
257 /* GNU extension to record C++ vtable member usage */
258 HOWTO (R_MN10300_GNU_VTENTRY, /* type */
259 0, /* rightshift */
260 0, /* size (0 = byte, 1 = short, 2 = long) */
261 0, /* bitsize */
262 false, /* pc_relative */
263 0, /* bitpos */
264 complain_overflow_dont, /* complain_on_overflow */
265 NULL, /* special_function */
266 "R_MN10300_GNU_VTENTRY", /* name */
267 false, /* partial_inplace */
268 0, /* src_mask */
269 0, /* dst_mask */
270 false), /* pcrel_offset */
272 /* Standard 24 bit reloc. */
273 HOWTO (R_MN10300_24,
277 false,
279 complain_overflow_bitfield,
280 bfd_elf_generic_reloc,
281 "R_MN10300_24",
282 false,
283 0xffffff,
284 0xffffff,
285 false),
286 HOWTO (R_MN10300_GOTPC32, /* type */
287 0, /* rightshift */
288 2, /* size (0 = byte, 1 = short, 2 = long) */
289 32, /* bitsize */
290 true, /* pc_relative */
291 0, /* bitpos */
292 complain_overflow_bitfield, /* complain_on_overflow */
293 bfd_elf_generic_reloc, /* */
294 "R_MN10300_GOTPC32", /* name */
295 false, /* partial_inplace */
296 0xffffffff, /* src_mask */
297 0xffffffff, /* dst_mask */
298 true), /* pcrel_offset */
300 HOWTO (R_MN10300_GOTPC16, /* type */
301 0, /* rightshift */
302 1, /* size (0 = byte, 1 = short, 2 = long) */
303 16, /* bitsize */
304 true, /* pc_relative */
305 0, /* bitpos */
306 complain_overflow_bitfield, /* complain_on_overflow */
307 bfd_elf_generic_reloc, /* */
308 "R_MN10300_GOTPC16", /* name */
309 false, /* partial_inplace */
310 0xffff, /* src_mask */
311 0xffff, /* dst_mask */
312 true), /* pcrel_offset */
314 HOWTO (R_MN10300_GOTOFF32, /* type */
315 0, /* rightshift */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
317 32, /* bitsize */
318 false, /* pc_relative */
319 0, /* bitpos */
320 complain_overflow_bitfield, /* complain_on_overflow */
321 bfd_elf_generic_reloc, /* */
322 "R_MN10300_GOTOFF32", /* name */
323 false, /* partial_inplace */
324 0xffffffff, /* src_mask */
325 0xffffffff, /* dst_mask */
326 false), /* pcrel_offset */
328 HOWTO (R_MN10300_GOTOFF24, /* type */
329 0, /* rightshift */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
331 24, /* bitsize */
332 false, /* pc_relative */
333 0, /* bitpos */
334 complain_overflow_bitfield, /* complain_on_overflow */
335 bfd_elf_generic_reloc, /* */
336 "R_MN10300_GOTOFF24", /* name */
337 false, /* partial_inplace */
338 0xffffff, /* src_mask */
339 0xffffff, /* dst_mask */
340 false), /* pcrel_offset */
342 HOWTO (R_MN10300_GOTOFF16, /* type */
343 0, /* rightshift */
344 1, /* size (0 = byte, 1 = short, 2 = long) */
345 16, /* bitsize */
346 false, /* pc_relative */
347 0, /* bitpos */
348 complain_overflow_bitfield, /* complain_on_overflow */
349 bfd_elf_generic_reloc, /* */
350 "R_MN10300_GOTOFF16", /* name */
351 false, /* partial_inplace */
352 0xffff, /* src_mask */
353 0xffff, /* dst_mask */
354 false), /* pcrel_offset */
356 HOWTO (R_MN10300_PLT32, /* type */
357 0, /* rightshift */
358 2, /* size (0 = byte, 1 = short, 2 = long) */
359 32, /* bitsize */
360 true, /* pc_relative */
361 0, /* bitpos */
362 complain_overflow_bitfield, /* complain_on_overflow */
363 bfd_elf_generic_reloc, /* */
364 "R_MN10300_PLT32", /* name */
365 false, /* partial_inplace */
366 0xffffffff, /* src_mask */
367 0xffffffff, /* dst_mask */
368 true), /* pcrel_offset */
370 HOWTO (R_MN10300_PLT16, /* type */
371 0, /* rightshift */
372 1, /* size (0 = byte, 1 = short, 2 = long) */
373 16, /* bitsize */
374 true, /* pc_relative */
375 0, /* bitpos */
376 complain_overflow_bitfield, /* complain_on_overflow */
377 bfd_elf_generic_reloc, /* */
378 "R_MN10300_PLT16", /* name */
379 false, /* partial_inplace */
380 0xffff, /* src_mask */
381 0xffff, /* dst_mask */
382 true), /* pcrel_offset */
384 HOWTO (R_MN10300_GOT32, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 32, /* bitsize */
388 false, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_bitfield, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* */
392 "R_MN10300_GOT32", /* name */
393 false, /* partial_inplace */
394 0xffffffff, /* src_mask */
395 0xffffffff, /* dst_mask */
396 false), /* pcrel_offset */
398 HOWTO (R_MN10300_GOT24, /* type */
399 0, /* rightshift */
400 2, /* size (0 = byte, 1 = short, 2 = long) */
401 24, /* bitsize */
402 false, /* pc_relative */
403 0, /* bitpos */
404 complain_overflow_bitfield, /* complain_on_overflow */
405 bfd_elf_generic_reloc, /* */
406 "R_MN10300_GOT24", /* name */
407 false, /* partial_inplace */
408 0xffffffff, /* src_mask */
409 0xffffffff, /* dst_mask */
410 false), /* pcrel_offset */
412 HOWTO (R_MN10300_GOT16, /* type */
413 0, /* rightshift */
414 1, /* size (0 = byte, 1 = short, 2 = long) */
415 16, /* bitsize */
416 false, /* pc_relative */
417 0, /* bitpos */
418 complain_overflow_bitfield, /* complain_on_overflow */
419 bfd_elf_generic_reloc, /* */
420 "R_MN10300_GOT16", /* name */
421 false, /* partial_inplace */
422 0xffffffff, /* src_mask */
423 0xffffffff, /* dst_mask */
424 false), /* pcrel_offset */
426 HOWTO (R_MN10300_COPY, /* type */
427 0, /* rightshift */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
429 32, /* bitsize */
430 false, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_bitfield, /* complain_on_overflow */
433 bfd_elf_generic_reloc, /* */
434 "R_MN10300_COPY", /* name */
435 false, /* partial_inplace */
436 0xffffffff, /* src_mask */
437 0xffffffff, /* dst_mask */
438 false), /* pcrel_offset */
440 HOWTO (R_MN10300_GLOB_DAT, /* type */
441 0, /* rightshift */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
443 32, /* bitsize */
444 false, /* pc_relative */
445 0, /* bitpos */
446 complain_overflow_bitfield, /* complain_on_overflow */
447 bfd_elf_generic_reloc, /* */
448 "R_MN10300_GLOB_DAT", /* name */
449 false, /* partial_inplace */
450 0xffffffff, /* src_mask */
451 0xffffffff, /* dst_mask */
452 false), /* pcrel_offset */
454 HOWTO (R_MN10300_JMP_SLOT, /* type */
455 0, /* rightshift */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
457 32, /* bitsize */
458 false, /* pc_relative */
459 0, /* bitpos */
460 complain_overflow_bitfield, /* complain_on_overflow */
461 bfd_elf_generic_reloc, /* */
462 "R_MN10300_JMP_SLOT", /* name */
463 false, /* partial_inplace */
464 0xffffffff, /* src_mask */
465 0xffffffff, /* dst_mask */
466 false), /* pcrel_offset */
468 HOWTO (R_MN10300_RELATIVE, /* type */
469 0, /* rightshift */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
471 32, /* bitsize */
472 false, /* pc_relative */
473 0, /* bitpos */
474 complain_overflow_bitfield, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* */
476 "R_MN10300_RELATIVE", /* name */
477 false, /* partial_inplace */
478 0xffffffff, /* src_mask */
479 0xffffffff, /* dst_mask */
480 false), /* pcrel_offset */
482 HOWTO (R_MN10300_TLS_GD, /* type */
483 0, /* rightshift */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
485 32, /* bitsize */
486 false, /* pc_relative */
487 0, /* bitpos */
488 complain_overflow_bitfield, /* complain_on_overflow */
489 bfd_elf_generic_reloc, /* */
490 "R_MN10300_TLS_GD", /* name */
491 false, /* partial_inplace */
492 0xffffffff, /* src_mask */
493 0xffffffff, /* dst_mask */
494 false), /* pcrel_offset */
496 HOWTO (R_MN10300_TLS_LD, /* type */
497 0, /* rightshift */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
499 32, /* bitsize */
500 false, /* pc_relative */
501 0, /* bitpos */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* */
504 "R_MN10300_TLS_LD", /* name */
505 false, /* partial_inplace */
506 0xffffffff, /* src_mask */
507 0xffffffff, /* dst_mask */
508 false), /* pcrel_offset */
510 HOWTO (R_MN10300_TLS_LDO, /* type */
511 0, /* rightshift */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
513 32, /* bitsize */
514 false, /* pc_relative */
515 0, /* bitpos */
516 complain_overflow_bitfield, /* complain_on_overflow */
517 bfd_elf_generic_reloc, /* */
518 "R_MN10300_TLS_LDO", /* name */
519 false, /* partial_inplace */
520 0xffffffff, /* src_mask */
521 0xffffffff, /* dst_mask */
522 false), /* pcrel_offset */
524 HOWTO (R_MN10300_TLS_GOTIE, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
528 false, /* pc_relative */
529 0, /* bitpos */
530 complain_overflow_bitfield, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* */
532 "R_MN10300_TLS_GOTIE", /* name */
533 false, /* partial_inplace */
534 0xffffffff, /* src_mask */
535 0xffffffff, /* dst_mask */
536 false), /* pcrel_offset */
538 HOWTO (R_MN10300_TLS_IE, /* type */
539 0, /* rightshift */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
541 32, /* bitsize */
542 false, /* pc_relative */
543 0, /* bitpos */
544 complain_overflow_bitfield, /* complain_on_overflow */
545 bfd_elf_generic_reloc, /* */
546 "R_MN10300_TLS_IE", /* name */
547 false, /* partial_inplace */
548 0xffffffff, /* src_mask */
549 0xffffffff, /* dst_mask */
550 false), /* pcrel_offset */
552 HOWTO (R_MN10300_TLS_LE, /* type */
553 0, /* rightshift */
554 2, /* size (0 = byte, 1 = short, 2 = long) */
555 32, /* bitsize */
556 false, /* pc_relative */
557 0, /* bitpos */
558 complain_overflow_bitfield, /* complain_on_overflow */
559 bfd_elf_generic_reloc, /* */
560 "R_MN10300_TLS_LE", /* name */
561 false, /* partial_inplace */
562 0xffffffff, /* src_mask */
563 0xffffffff, /* dst_mask */
564 false), /* pcrel_offset */
566 HOWTO (R_MN10300_TLS_DTPMOD, /* type */
567 0, /* rightshift */
568 2, /* size (0 = byte, 1 = short, 2 = long) */
569 32, /* bitsize */
570 false, /* pc_relative */
571 0, /* bitpos */
572 complain_overflow_bitfield, /* complain_on_overflow */
573 bfd_elf_generic_reloc, /* */
574 "R_MN10300_TLS_DTPMOD", /* name */
575 false, /* partial_inplace */
576 0xffffffff, /* src_mask */
577 0xffffffff, /* dst_mask */
578 false), /* pcrel_offset */
580 HOWTO (R_MN10300_TLS_DTPOFF, /* type */
581 0, /* rightshift */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
583 32, /* bitsize */
584 false, /* pc_relative */
585 0, /* bitpos */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* */
588 "R_MN10300_TLS_DTPOFF", /* name */
589 false, /* partial_inplace */
590 0xffffffff, /* src_mask */
591 0xffffffff, /* dst_mask */
592 false), /* pcrel_offset */
594 HOWTO (R_MN10300_TLS_TPOFF, /* type */
595 0, /* rightshift */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
597 32, /* bitsize */
598 false, /* pc_relative */
599 0, /* bitpos */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* */
602 "R_MN10300_TLS_TPOFF", /* name */
603 false, /* partial_inplace */
604 0xffffffff, /* src_mask */
605 0xffffffff, /* dst_mask */
606 false), /* pcrel_offset */
608 HOWTO (R_MN10300_SYM_DIFF, /* type */
609 0, /* rightshift */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
611 32, /* bitsize */
612 false, /* pc_relative */
613 0, /* bitpos */
614 complain_overflow_dont,/* complain_on_overflow */
615 NULL, /* special handler. */
616 "R_MN10300_SYM_DIFF", /* name */
617 false, /* partial_inplace */
618 0xffffffff, /* src_mask */
619 0xffffffff, /* dst_mask */
620 false), /* pcrel_offset */
622 HOWTO (R_MN10300_ALIGN, /* type */
623 0, /* rightshift */
624 0, /* size (0 = byte, 1 = short, 2 = long) */
625 32, /* bitsize */
626 false, /* pc_relative */
627 0, /* bitpos */
628 complain_overflow_dont,/* complain_on_overflow */
629 NULL, /* special handler. */
630 "R_MN10300_ALIGN", /* name */
631 false, /* partial_inplace */
632 0, /* src_mask */
633 0, /* dst_mask */
634 false) /* pcrel_offset */
637 struct mn10300_reloc_map
639 bfd_reloc_code_real_type bfd_reloc_val;
640 unsigned char elf_reloc_val;
643 static const struct mn10300_reloc_map mn10300_reloc_map[] =
645 { BFD_RELOC_NONE, R_MN10300_NONE, },
646 { BFD_RELOC_32, R_MN10300_32, },
647 { BFD_RELOC_16, R_MN10300_16, },
648 { BFD_RELOC_8, R_MN10300_8, },
649 { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
650 { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
651 { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
652 { BFD_RELOC_24, R_MN10300_24, },
653 { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
654 { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
655 { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
656 { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
657 { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
658 { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
659 { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
660 { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
661 { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
662 { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
663 { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
664 { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
665 { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
666 { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
667 { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
668 { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
669 { BFD_RELOC_MN10300_TLS_GD, R_MN10300_TLS_GD },
670 { BFD_RELOC_MN10300_TLS_LD, R_MN10300_TLS_LD },
671 { BFD_RELOC_MN10300_TLS_LDO, R_MN10300_TLS_LDO },
672 { BFD_RELOC_MN10300_TLS_GOTIE, R_MN10300_TLS_GOTIE },
673 { BFD_RELOC_MN10300_TLS_IE, R_MN10300_TLS_IE },
674 { BFD_RELOC_MN10300_TLS_LE, R_MN10300_TLS_LE },
675 { BFD_RELOC_MN10300_TLS_DTPMOD, R_MN10300_TLS_DTPMOD },
676 { BFD_RELOC_MN10300_TLS_DTPOFF, R_MN10300_TLS_DTPOFF },
677 { BFD_RELOC_MN10300_TLS_TPOFF, R_MN10300_TLS_TPOFF },
678 { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF },
679 { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN }
682 /* Create the GOT section. */
684 static bool
685 _bfd_mn10300_elf_create_got_section (bfd * abfd,
686 struct bfd_link_info * info)
688 flagword flags;
689 flagword pltflags;
690 asection * s;
691 struct elf_link_hash_entry * h;
692 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
693 struct elf_link_hash_table *htab;
694 int ptralign;
696 /* This function may be called more than once. */
697 htab = elf_hash_table (info);
698 if (htab->sgot != NULL)
699 return true;
701 switch (bed->s->arch_size)
703 case 32:
704 ptralign = 2;
705 break;
707 case 64:
708 ptralign = 3;
709 break;
711 default:
712 bfd_set_error (bfd_error_bad_value);
713 return false;
716 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
717 | SEC_LINKER_CREATED);
719 pltflags = flags;
720 pltflags |= SEC_CODE;
721 if (bed->plt_not_loaded)
722 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
723 if (bed->plt_readonly)
724 pltflags |= SEC_READONLY;
726 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
727 htab->splt = s;
728 if (s == NULL
729 || !bfd_set_section_alignment (s, bed->plt_alignment))
730 return false;
732 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
733 .plt section. */
734 if (bed->want_plt_sym)
736 h = _bfd_elf_define_linkage_sym (abfd, info, s,
737 "_PROCEDURE_LINKAGE_TABLE_");
738 htab->hplt = h;
739 if (h == NULL)
740 return false;
743 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
744 htab->sgot = s;
745 if (s == NULL
746 || !bfd_set_section_alignment (s, ptralign))
747 return false;
749 if (bed->want_got_plt)
751 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
752 htab->sgotplt = s;
753 if (s == NULL
754 || !bfd_set_section_alignment (s, ptralign))
755 return false;
758 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
759 (or .got.plt) section. We don't do this in the linker script
760 because we don't want to define the symbol if we are not creating
761 a global offset table. */
762 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
763 htab->hgot = h;
764 if (h == NULL)
765 return false;
767 /* The first bit of the global offset table is the header. */
768 s->size += bed->got_header_size;
770 return true;
773 static reloc_howto_type *
774 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
775 bfd_reloc_code_real_type code)
777 unsigned int i;
779 for (i = ARRAY_SIZE (mn10300_reloc_map); i--;)
780 if (mn10300_reloc_map[i].bfd_reloc_val == code)
781 return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
783 return NULL;
786 static reloc_howto_type *
787 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
788 const char *r_name)
790 unsigned int i;
792 for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;)
793 if (elf_mn10300_howto_table[i].name != NULL
794 && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0)
795 return elf_mn10300_howto_table + i;
797 return NULL;
800 /* Set the howto pointer for an MN10300 ELF reloc. */
802 static bool
803 mn10300_info_to_howto (bfd *abfd,
804 arelent *cache_ptr,
805 Elf_Internal_Rela *dst)
807 unsigned int r_type;
809 r_type = ELF32_R_TYPE (dst->r_info);
810 if (r_type >= R_MN10300_MAX)
812 /* xgettext:c-format */
813 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
814 abfd, r_type);
815 bfd_set_error (bfd_error_bad_value);
816 return false;
818 cache_ptr->howto = elf_mn10300_howto_table + r_type;
819 return true;
822 static int
823 elf_mn10300_tls_transition (struct bfd_link_info * info,
824 int r_type,
825 struct elf_link_hash_entry * h,
826 asection * sec,
827 bool counting)
829 bool is_local;
831 if (r_type == R_MN10300_TLS_GD
832 && h != NULL
833 && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_IE)
834 return R_MN10300_TLS_GOTIE;
836 if (bfd_link_pic (info))
837 return r_type;
839 if (! (sec->flags & SEC_CODE))
840 return r_type;
842 if (! counting && h != NULL && ! elf_hash_table (info)->dynamic_sections_created)
843 is_local = true;
844 else
845 is_local = SYMBOL_CALLS_LOCAL (info, h);
847 /* For the main program, these are the transitions we do. */
848 switch (r_type)
850 case R_MN10300_TLS_GD: return is_local ? R_MN10300_TLS_LE : R_MN10300_TLS_GOTIE;
851 case R_MN10300_TLS_LD: return R_MN10300_NONE;
852 case R_MN10300_TLS_LDO: return R_MN10300_TLS_LE;
853 case R_MN10300_TLS_IE:
854 case R_MN10300_TLS_GOTIE: return is_local ? R_MN10300_TLS_LE : r_type;
857 return r_type;
860 /* Return the relocation value for @tpoff relocation
861 if STT_TLS virtual address is ADDRESS. */
863 static bfd_vma
864 dtpoff (struct bfd_link_info * info, bfd_vma address)
866 struct elf_link_hash_table *htab = elf_hash_table (info);
868 /* If tls_sec is NULL, we should have signalled an error already. */
869 if (htab->tls_sec == NULL)
870 return 0;
871 return address - htab->tls_sec->vma;
874 /* Return the relocation value for @tpoff relocation
875 if STT_TLS virtual address is ADDRESS. */
877 static bfd_vma
878 tpoff (struct bfd_link_info * info, bfd_vma address)
880 struct elf_link_hash_table *htab = elf_hash_table (info);
882 /* If tls_sec is NULL, we should have signalled an error already. */
883 if (htab->tls_sec == NULL)
884 return 0;
885 return address - (htab->tls_size + htab->tls_sec->vma);
888 /* Returns nonzero if there's a R_MN10300_PLT32 reloc that we now need
889 to skip, after this one. The actual value is the offset between
890 this reloc and the PLT reloc. */
892 static int
893 mn10300_do_tls_transition (bfd * input_bfd,
894 unsigned int r_type,
895 unsigned int tls_r_type,
896 bfd_byte * contents,
897 bfd_vma offset)
899 bfd_byte *op = contents + offset;
900 int gotreg = 0;
902 #define TLS_PAIR(r1,r2) ((r1) * R_MN10300_MAX + (r2))
904 /* This is common to all GD/LD transitions, so break it out. */
905 if (r_type == R_MN10300_TLS_GD
906 || r_type == R_MN10300_TLS_LD)
908 op -= 2;
909 /* mov imm,d0. */
910 BFD_ASSERT (bfd_get_8 (input_bfd, op) == 0xFC);
911 BFD_ASSERT (bfd_get_8 (input_bfd, op + 1) == 0xCC);
912 /* add aN,d0. */
913 BFD_ASSERT (bfd_get_8 (input_bfd, op + 6) == 0xF1);
914 gotreg = (bfd_get_8 (input_bfd, op + 7) & 0x0c) >> 2;
915 /* Call. */
916 BFD_ASSERT (bfd_get_8 (input_bfd, op + 8) == 0xDD);
919 switch (TLS_PAIR (r_type, tls_r_type))
921 case TLS_PAIR (R_MN10300_TLS_GD, R_MN10300_TLS_GOTIE):
923 /* Keep track of which register we put GOTptr in. */
924 /* mov (_x@indntpoff,a2),a0. */
925 memcpy (op, "\xFC\x20\x00\x00\x00\x00", 6);
926 op[1] |= gotreg;
927 /* add e2,a0. */
928 memcpy (op+6, "\xF9\x78\x28", 3);
929 /* or 0x00000000, d0 - six byte nop. */
930 memcpy (op+9, "\xFC\xE4\x00\x00\x00\x00", 6);
932 return 7;
934 case TLS_PAIR (R_MN10300_TLS_GD, R_MN10300_TLS_LE):
936 /* Register is *always* a0. */
937 /* mov _x@tpoff,a0. */
938 memcpy (op, "\xFC\xDC\x00\x00\x00\x00", 6);
939 /* add e2,a0. */
940 memcpy (op+6, "\xF9\x78\x28", 3);
941 /* or 0x00000000, d0 - six byte nop. */
942 memcpy (op+9, "\xFC\xE4\x00\x00\x00\x00", 6);
944 return 7;
945 case TLS_PAIR (R_MN10300_TLS_LD, R_MN10300_NONE):
947 /* Register is *always* a0. */
948 /* mov e2,a0. */
949 memcpy (op, "\xF5\x88", 2);
950 /* or 0x00000000, d0 - six byte nop. */
951 memcpy (op+2, "\xFC\xE4\x00\x00\x00\x00", 6);
952 /* or 0x00000000, e2 - seven byte nop. */
953 memcpy (op+8, "\xFE\x19\x22\x00\x00\x00\x00", 7);
955 return 7;
957 case TLS_PAIR (R_MN10300_TLS_LDO, R_MN10300_TLS_LE):
958 /* No changes needed, just the reloc change. */
959 return 0;
961 /* These are a little tricky, because we have to detect which
962 opcode is being used (they're different sizes, with the reloc
963 at different offsets within the opcode) and convert each
964 accordingly, copying the operands as needed. The conversions
965 we do are as follows (IE,GOTIE,LE):
967 1111 1100 1010 01Dn [-- abs32 --] MOV (x@indntpoff),Dn
968 1111 1100 0000 DnAm [-- abs32 --] MOV (x@gotntpoff,Am),Dn
969 1111 1100 1100 11Dn [-- abs32 --] MOV x@tpoff,Dn
971 1111 1100 1010 00An [-- abs32 --] MOV (x@indntpoff),An
972 1111 1100 0010 AnAm [-- abs32 --] MOV (x@gotntpoff,Am),An
973 1111 1100 1101 11An [-- abs32 --] MOV x@tpoff,An
975 1111 1110 0000 1110 Rnnn Xxxx [-- abs32 --] MOV (x@indntpoff),Rn
976 1111 1110 0000 1010 Rnnn Rmmm [-- abs32 --] MOV (x@indntpoff,Rm),Rn
977 1111 1110 0000 1000 Rnnn Xxxx [-- abs32 --] MOV x@tpoff,Rn
979 Since the GOT pointer is always $a2, we assume the last
980 normally won't happen, but let's be paranoid and plan for the
981 day that GCC optimizes it somewhow. */
983 case TLS_PAIR (R_MN10300_TLS_IE, R_MN10300_TLS_LE):
984 if (op[-2] == 0xFC)
986 op -= 2;
987 if ((op[1] & 0xFC) == 0xA4) /* Dn */
989 op[1] &= 0x03; /* Leaves Dn. */
990 op[1] |= 0xCC;
992 else /* An */
994 op[1] &= 0x03; /* Leaves An. */
995 op[1] |= 0xDC;
998 else if (op[-3] == 0xFE)
999 op[-2] = 0x08;
1000 else
1001 abort ();
1002 break;
1004 case TLS_PAIR (R_MN10300_TLS_GOTIE, R_MN10300_TLS_LE):
1005 if (op[-2] == 0xFC)
1007 op -= 2;
1008 if ((op[1] & 0xF0) == 0x00) /* Dn */
1010 op[1] &= 0x0C; /* Leaves Dn. */
1011 op[1] >>= 2;
1012 op[1] |= 0xCC;
1014 else /* An */
1016 op[1] &= 0x0C; /* Leaves An. */
1017 op[1] >>= 2;
1018 op[1] |= 0xDC;
1021 else if (op[-3] == 0xFE)
1022 op[-2] = 0x08;
1023 else
1024 abort ();
1025 break;
1027 default:
1028 _bfd_error_handler
1029 /* xgettext:c-format */
1030 (_("%pB: unsupported transition from %s to %s"),
1031 input_bfd,
1032 elf_mn10300_howto_table[r_type].name,
1033 elf_mn10300_howto_table[tls_r_type].name);
1034 break;
1036 #undef TLS_PAIR
1037 return 0;
1040 /* Look through the relocs for a section during the first phase.
1041 Since we don't do .gots or .plts, we just need to consider the
1042 virtual table relocs for gc. */
1044 static bool
1045 mn10300_elf_check_relocs (bfd *abfd,
1046 struct bfd_link_info *info,
1047 asection *sec,
1048 const Elf_Internal_Rela *relocs)
1050 struct elf32_mn10300_link_hash_table * htab = elf32_mn10300_hash_table (info);
1051 bool sym_diff_reloc_seen;
1052 Elf_Internal_Shdr *symtab_hdr;
1053 Elf_Internal_Sym * isymbuf = NULL;
1054 struct elf_link_hash_entry **sym_hashes;
1055 const Elf_Internal_Rela *rel;
1056 const Elf_Internal_Rela *rel_end;
1057 bfd * dynobj;
1058 bfd_vma * local_got_offsets;
1059 asection * sgot;
1060 asection * srelgot;
1061 asection * sreloc;
1062 bool result = false;
1064 sgot = NULL;
1065 srelgot = NULL;
1066 sreloc = NULL;
1068 if (bfd_link_relocatable (info))
1069 return true;
1071 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1072 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1073 sym_hashes = elf_sym_hashes (abfd);
1075 dynobj = elf_hash_table (info)->dynobj;
1076 local_got_offsets = elf_local_got_offsets (abfd);
1077 rel_end = relocs + sec->reloc_count;
1078 sym_diff_reloc_seen = false;
1080 for (rel = relocs; rel < rel_end; rel++)
1082 struct elf_link_hash_entry *h;
1083 unsigned long r_symndx;
1084 unsigned int r_type;
1085 int tls_type = GOT_NORMAL;
1087 r_symndx = ELF32_R_SYM (rel->r_info);
1088 if (r_symndx < symtab_hdr->sh_info)
1089 h = NULL;
1090 else
1092 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1093 while (h->root.type == bfd_link_hash_indirect
1094 || h->root.type == bfd_link_hash_warning)
1095 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1098 r_type = ELF32_R_TYPE (rel->r_info);
1099 r_type = elf_mn10300_tls_transition (info, r_type, h, sec, true);
1101 /* Some relocs require a global offset table. */
1102 if (dynobj == NULL)
1104 switch (r_type)
1106 case R_MN10300_GOT32:
1107 case R_MN10300_GOT24:
1108 case R_MN10300_GOT16:
1109 case R_MN10300_GOTOFF32:
1110 case R_MN10300_GOTOFF24:
1111 case R_MN10300_GOTOFF16:
1112 case R_MN10300_GOTPC32:
1113 case R_MN10300_GOTPC16:
1114 case R_MN10300_TLS_GD:
1115 case R_MN10300_TLS_LD:
1116 case R_MN10300_TLS_GOTIE:
1117 case R_MN10300_TLS_IE:
1118 elf_hash_table (info)->dynobj = dynobj = abfd;
1119 if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
1120 goto fail;
1121 break;
1123 default:
1124 break;
1128 switch (r_type)
1130 /* This relocation describes the C++ object vtable hierarchy.
1131 Reconstruct it for later use during GC. */
1132 case R_MN10300_GNU_VTINHERIT:
1133 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1134 goto fail;
1135 break;
1137 /* This relocation describes which C++ vtable entries are actually
1138 used. Record for later use during GC. */
1139 case R_MN10300_GNU_VTENTRY:
1140 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1141 goto fail;
1142 break;
1144 case R_MN10300_TLS_LD:
1145 htab->tls_ldm_got.refcount ++;
1146 tls_type = GOT_TLS_LD;
1148 if (htab->tls_ldm_got.got_allocated)
1149 break;
1150 goto create_got;
1152 case R_MN10300_TLS_IE:
1153 case R_MN10300_TLS_GOTIE:
1154 if (bfd_link_pic (info))
1155 info->flags |= DF_STATIC_TLS;
1156 /* Fall through */
1158 case R_MN10300_TLS_GD:
1159 case R_MN10300_GOT32:
1160 case R_MN10300_GOT24:
1161 case R_MN10300_GOT16:
1162 create_got:
1163 /* This symbol requires a global offset table entry. */
1165 switch (r_type)
1167 case R_MN10300_TLS_IE:
1168 case R_MN10300_TLS_GOTIE: tls_type = GOT_TLS_IE; break;
1169 case R_MN10300_TLS_GD: tls_type = GOT_TLS_GD; break;
1170 default: tls_type = GOT_NORMAL; break;
1173 sgot = htab->root.sgot;
1174 srelgot = htab->root.srelgot;
1175 BFD_ASSERT (sgot != NULL && srelgot != NULL);
1177 if (r_type == R_MN10300_TLS_LD)
1179 htab->tls_ldm_got.offset = sgot->size;
1180 htab->tls_ldm_got.got_allocated ++;
1182 else if (h != NULL)
1184 if (elf_mn10300_hash_entry (h)->tls_type != tls_type
1185 && elf_mn10300_hash_entry (h)->tls_type != GOT_UNKNOWN)
1187 if (tls_type == GOT_TLS_IE
1188 && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_GD)
1189 /* No change - this is ok. */;
1190 else if (tls_type == GOT_TLS_GD
1191 && elf_mn10300_hash_entry (h)->tls_type == GOT_TLS_IE)
1192 /* Transition GD->IE. */
1193 tls_type = GOT_TLS_IE;
1194 else
1195 _bfd_error_handler
1196 /* xgettext:c-format */
1197 (_("%pB: %s' accessed both as normal and thread local symbol"),
1198 abfd, h ? h->root.root.string : "<local>");
1201 elf_mn10300_hash_entry (h)->tls_type = tls_type;
1203 if (h->got.offset != (bfd_vma) -1)
1204 /* We have already allocated space in the .got. */
1205 break;
1207 h->got.offset = sgot->size;
1209 if (ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1210 /* Make sure this symbol is output as a dynamic symbol. */
1211 && h->dynindx == -1)
1213 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1214 goto fail;
1217 srelgot->size += sizeof (Elf32_External_Rela);
1218 if (r_type == R_MN10300_TLS_GD)
1219 srelgot->size += sizeof (Elf32_External_Rela);
1221 else
1223 /* This is a global offset table entry for a local
1224 symbol. */
1225 if (local_got_offsets == NULL)
1227 size_t size;
1228 unsigned int i;
1230 size = symtab_hdr->sh_info * (sizeof (bfd_vma) + sizeof (char));
1231 local_got_offsets = bfd_alloc (abfd, size);
1233 if (local_got_offsets == NULL)
1234 goto fail;
1236 elf_local_got_offsets (abfd) = local_got_offsets;
1237 elf_mn10300_local_got_tls_type (abfd)
1238 = (char *) (local_got_offsets + symtab_hdr->sh_info);
1240 for (i = 0; i < symtab_hdr->sh_info; i++)
1241 local_got_offsets[i] = (bfd_vma) -1;
1244 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
1245 /* We have already allocated space in the .got. */
1246 break;
1248 local_got_offsets[r_symndx] = sgot->size;
1250 if (bfd_link_pic (info))
1252 /* If we are generating a shared object, we need to
1253 output a R_MN10300_RELATIVE reloc so that the dynamic
1254 linker can adjust this GOT entry. */
1255 srelgot->size += sizeof (Elf32_External_Rela);
1257 if (r_type == R_MN10300_TLS_GD)
1258 /* And a R_MN10300_TLS_DTPOFF reloc as well. */
1259 srelgot->size += sizeof (Elf32_External_Rela);
1262 elf_mn10300_local_got_tls_type (abfd) [r_symndx] = tls_type;
1265 sgot->size += 4;
1266 if (r_type == R_MN10300_TLS_GD
1267 || r_type == R_MN10300_TLS_LD)
1268 sgot->size += 4;
1270 goto need_shared_relocs;
1272 case R_MN10300_PLT32:
1273 case R_MN10300_PLT16:
1274 /* This symbol requires a procedure linkage table entry. We
1275 actually build the entry in adjust_dynamic_symbol,
1276 because this might be a case of linking PIC code which is
1277 never referenced by a dynamic object, in which case we
1278 don't need to generate a procedure linkage table entry
1279 after all. */
1281 /* If this is a local symbol, we resolve it directly without
1282 creating a procedure linkage table entry. */
1283 if (h == NULL)
1284 continue;
1286 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
1287 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
1288 break;
1290 h->needs_plt = 1;
1291 break;
1293 case R_MN10300_24:
1294 case R_MN10300_16:
1295 case R_MN10300_8:
1296 case R_MN10300_PCREL32:
1297 case R_MN10300_PCREL16:
1298 case R_MN10300_PCREL8:
1299 if (h != NULL)
1300 h->non_got_ref = 1;
1301 break;
1303 case R_MN10300_SYM_DIFF:
1304 sym_diff_reloc_seen = true;
1305 break;
1307 case R_MN10300_32:
1308 if (h != NULL)
1309 h->non_got_ref = 1;
1311 need_shared_relocs:
1312 /* If we are creating a shared library, then we
1313 need to copy the reloc into the shared library. */
1314 if (bfd_link_pic (info)
1315 && (sec->flags & SEC_ALLOC) != 0
1316 /* Do not generate a dynamic reloc for a
1317 reloc associated with a SYM_DIFF operation. */
1318 && ! sym_diff_reloc_seen)
1320 asection * sym_section = NULL;
1322 /* Find the section containing the
1323 symbol involved in the relocation. */
1324 if (h == NULL)
1326 Elf_Internal_Sym * isym;
1328 if (isymbuf == NULL)
1329 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1330 symtab_hdr->sh_info, 0,
1331 NULL, NULL, NULL);
1332 if (isymbuf)
1334 isym = isymbuf + r_symndx;
1335 /* All we care about is whether this local symbol is absolute. */
1336 if (isym->st_shndx == SHN_ABS)
1337 sym_section = bfd_abs_section_ptr;
1340 else
1342 if (h->root.type == bfd_link_hash_defined
1343 || h->root.type == bfd_link_hash_defweak)
1344 sym_section = h->root.u.def.section;
1347 /* If the symbol is absolute then the relocation can
1348 be resolved during linking and there is no need for
1349 a dynamic reloc. */
1350 if (sym_section != bfd_abs_section_ptr)
1352 /* When creating a shared object, we must copy these
1353 reloc types into the output file. We create a reloc
1354 section in dynobj and make room for this reloc. */
1355 if (sreloc == NULL)
1357 sreloc = _bfd_elf_make_dynamic_reloc_section
1358 (sec, dynobj, 2, abfd, /*rela?*/ true);
1359 if (sreloc == NULL)
1360 goto fail;
1363 sreloc->size += sizeof (Elf32_External_Rela);
1367 break;
1370 if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF)
1371 sym_diff_reloc_seen = false;
1374 result = true;
1375 fail:
1376 if (symtab_hdr->contents != (unsigned char *) isymbuf)
1377 free (isymbuf);
1379 return result;
1382 /* Return the section that should be marked against GC for a given
1383 relocation. */
1385 static asection *
1386 mn10300_elf_gc_mark_hook (asection *sec,
1387 struct bfd_link_info *info,
1388 Elf_Internal_Rela *rel,
1389 struct elf_link_hash_entry *h,
1390 Elf_Internal_Sym *sym)
1392 if (h != NULL)
1393 switch (ELF32_R_TYPE (rel->r_info))
1395 case R_MN10300_GNU_VTINHERIT:
1396 case R_MN10300_GNU_VTENTRY:
1397 return NULL;
1400 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1403 /* Perform a relocation as part of a final link. */
1405 static bfd_reloc_status_type
1406 mn10300_elf_final_link_relocate (reloc_howto_type *howto,
1407 bfd *input_bfd,
1408 bfd *output_bfd ATTRIBUTE_UNUSED,
1409 asection *input_section,
1410 bfd_byte *contents,
1411 bfd_vma offset,
1412 bfd_vma value,
1413 bfd_vma addend,
1414 struct elf_link_hash_entry * h,
1415 unsigned long symndx,
1416 struct bfd_link_info *info,
1417 asection *sym_sec ATTRIBUTE_UNUSED,
1418 int is_local ATTRIBUTE_UNUSED)
1420 struct elf32_mn10300_link_hash_table * htab = elf32_mn10300_hash_table (info);
1421 static asection * sym_diff_section;
1422 static bfd_vma sym_diff_value;
1423 bool is_sym_diff_reloc;
1424 unsigned long r_type = howto->type;
1425 bfd_byte * hit_data = contents + offset;
1426 bfd * dynobj;
1427 asection * sgot;
1428 asection * splt;
1429 asection * sreloc;
1431 dynobj = elf_hash_table (info)->dynobj;
1432 sgot = NULL;
1433 splt = NULL;
1434 sreloc = NULL;
1436 switch (r_type)
1438 case R_MN10300_24:
1439 case R_MN10300_16:
1440 case R_MN10300_8:
1441 case R_MN10300_PCREL8:
1442 case R_MN10300_PCREL16:
1443 case R_MN10300_PCREL32:
1444 case R_MN10300_GOTOFF32:
1445 case R_MN10300_GOTOFF24:
1446 case R_MN10300_GOTOFF16:
1447 if (bfd_link_pic (info)
1448 && (input_section->flags & SEC_ALLOC) != 0
1449 && h != NULL
1450 && ! SYMBOL_REFERENCES_LOCAL (info, h))
1451 return bfd_reloc_dangerous;
1452 /* Fall through. */
1453 case R_MN10300_GOT32:
1454 /* Issue 2052223:
1455 Taking the address of a protected function in a shared library
1456 is illegal. Issue an error message here. */
1457 if (bfd_link_pic (info)
1458 && (input_section->flags & SEC_ALLOC) != 0
1459 && h != NULL
1460 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED
1461 && (h->type == STT_FUNC || h->type == STT_GNU_IFUNC)
1462 && ! SYMBOL_REFERENCES_LOCAL (info, h))
1463 return bfd_reloc_dangerous;
1466 is_sym_diff_reloc = false;
1467 if (sym_diff_section != NULL)
1469 BFD_ASSERT (sym_diff_section == input_section);
1471 switch (r_type)
1473 case R_MN10300_32:
1474 case R_MN10300_24:
1475 case R_MN10300_16:
1476 case R_MN10300_8:
1477 value -= sym_diff_value;
1478 /* If we are computing a 32-bit value for the location lists
1479 and the result is 0 then we add one to the value. A zero
1480 value can result because of linker relaxation deleteing
1481 prologue instructions and using a value of 1 (for the begin
1482 and end offsets in the location list entry) results in a
1483 nul entry which does not prevent the following entries from
1484 being parsed. */
1485 if (r_type == R_MN10300_32
1486 && value == 0
1487 && strcmp (input_section->name, ".debug_loc") == 0)
1488 value = 1;
1489 sym_diff_section = NULL;
1490 is_sym_diff_reloc = true;
1491 break;
1493 default:
1494 sym_diff_section = NULL;
1495 break;
1499 switch (r_type)
1501 case R_MN10300_SYM_DIFF:
1502 BFD_ASSERT (addend == 0);
1503 /* Cache the input section and value.
1504 The offset is unreliable, since relaxation may
1505 have reduced the following reloc's offset. */
1506 sym_diff_section = input_section;
1507 sym_diff_value = value;
1508 return bfd_reloc_ok;
1510 case R_MN10300_ALIGN:
1511 case R_MN10300_NONE:
1512 return bfd_reloc_ok;
1514 case R_MN10300_32:
1515 if (bfd_link_pic (info)
1516 /* Do not generate relocs when an R_MN10300_32 has been used
1517 with an R_MN10300_SYM_DIFF to compute a difference of two
1518 symbols. */
1519 && !is_sym_diff_reloc
1520 /* Also, do not generate a reloc when the symbol associated
1521 with the R_MN10300_32 reloc is absolute - there is no
1522 need for a run time computation in this case. */
1523 && sym_sec != bfd_abs_section_ptr
1524 /* If the section is not going to be allocated at load time
1525 then there is no need to generate relocs for it. */
1526 && (input_section->flags & SEC_ALLOC) != 0)
1528 Elf_Internal_Rela outrel;
1529 bool skip, relocate;
1531 /* When generating a shared object, these relocations are
1532 copied into the output file to be resolved at run
1533 time. */
1534 if (sreloc == NULL)
1536 sreloc = _bfd_elf_get_dynamic_reloc_section
1537 (input_bfd, input_section, /*rela?*/ true);
1538 if (sreloc == NULL)
1539 return false;
1542 skip = false;
1544 outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
1545 input_section, offset);
1546 if (outrel.r_offset == (bfd_vma) -1)
1547 skip = true;
1549 outrel.r_offset += (input_section->output_section->vma
1550 + input_section->output_offset);
1552 if (skip)
1554 memset (&outrel, 0, sizeof outrel);
1555 relocate = false;
1557 else
1559 /* h->dynindx may be -1 if this symbol was marked to
1560 become local. */
1561 if (h == NULL
1562 || SYMBOL_REFERENCES_LOCAL (info, h))
1564 relocate = true;
1565 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1566 outrel.r_addend = value + addend;
1568 else
1570 BFD_ASSERT (h->dynindx != -1);
1571 relocate = false;
1572 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
1573 outrel.r_addend = value + addend;
1577 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1578 (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
1579 + sreloc->reloc_count));
1580 ++sreloc->reloc_count;
1582 /* If this reloc is against an external symbol, we do
1583 not want to fiddle with the addend. Otherwise, we
1584 need to include the symbol value so that it becomes
1585 an addend for the dynamic reloc. */
1586 if (! relocate)
1587 return bfd_reloc_ok;
1589 value += addend;
1590 bfd_put_32 (input_bfd, value, hit_data);
1591 return bfd_reloc_ok;
1593 case R_MN10300_24:
1594 value += addend;
1596 if ((long) value > 0x7fffff || (long) value < -0x800000)
1597 return bfd_reloc_overflow;
1599 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1600 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1601 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1602 return bfd_reloc_ok;
1604 case R_MN10300_16:
1605 value += addend;
1607 if ((long) value > 0x7fff || (long) value < -0x8000)
1608 return bfd_reloc_overflow;
1610 bfd_put_16 (input_bfd, value, hit_data);
1611 return bfd_reloc_ok;
1613 case R_MN10300_8:
1614 value += addend;
1616 if ((long) value > 0x7f || (long) value < -0x80)
1617 return bfd_reloc_overflow;
1619 bfd_put_8 (input_bfd, value, hit_data);
1620 return bfd_reloc_ok;
1622 case R_MN10300_PCREL8:
1623 value -= (input_section->output_section->vma
1624 + input_section->output_offset);
1625 value -= offset;
1626 value += addend;
1628 if ((long) value > 0x7f || (long) value < -0x80)
1629 return bfd_reloc_overflow;
1631 bfd_put_8 (input_bfd, value, hit_data);
1632 return bfd_reloc_ok;
1634 case R_MN10300_PCREL16:
1635 value -= (input_section->output_section->vma
1636 + input_section->output_offset);
1637 value -= offset;
1638 value += addend;
1640 if ((long) value > 0x7fff || (long) value < -0x8000)
1641 return bfd_reloc_overflow;
1643 bfd_put_16 (input_bfd, value, hit_data);
1644 return bfd_reloc_ok;
1646 case R_MN10300_PCREL32:
1647 value -= (input_section->output_section->vma
1648 + input_section->output_offset);
1649 value -= offset;
1650 value += addend;
1652 bfd_put_32 (input_bfd, value, hit_data);
1653 return bfd_reloc_ok;
1655 case R_MN10300_GNU_VTINHERIT:
1656 case R_MN10300_GNU_VTENTRY:
1657 return bfd_reloc_ok;
1659 case R_MN10300_GOTPC32:
1660 if (dynobj == NULL)
1661 return bfd_reloc_dangerous;
1663 /* Use global offset table as symbol value. */
1664 value = htab->root.sgot->output_section->vma;
1665 value -= (input_section->output_section->vma
1666 + input_section->output_offset);
1667 value -= offset;
1668 value += addend;
1670 bfd_put_32 (input_bfd, value, hit_data);
1671 return bfd_reloc_ok;
1673 case R_MN10300_GOTPC16:
1674 if (dynobj == NULL)
1675 return bfd_reloc_dangerous;
1677 /* Use global offset table as symbol value. */
1678 value = htab->root.sgot->output_section->vma;
1679 value -= (input_section->output_section->vma
1680 + input_section->output_offset);
1681 value -= offset;
1682 value += addend;
1684 if ((long) value > 0x7fff || (long) value < -0x8000)
1685 return bfd_reloc_overflow;
1687 bfd_put_16 (input_bfd, value, hit_data);
1688 return bfd_reloc_ok;
1690 case R_MN10300_GOTOFF32:
1691 if (dynobj == NULL)
1692 return bfd_reloc_dangerous;
1694 value -= htab->root.sgot->output_section->vma;
1695 value += addend;
1697 bfd_put_32 (input_bfd, value, hit_data);
1698 return bfd_reloc_ok;
1700 case R_MN10300_GOTOFF24:
1701 if (dynobj == NULL)
1702 return bfd_reloc_dangerous;
1704 value -= htab->root.sgot->output_section->vma;
1705 value += addend;
1707 if ((long) value > 0x7fffff || (long) value < -0x800000)
1708 return bfd_reloc_overflow;
1710 bfd_put_8 (input_bfd, value, hit_data);
1711 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1712 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1713 return bfd_reloc_ok;
1715 case R_MN10300_GOTOFF16:
1716 if (dynobj == NULL)
1717 return bfd_reloc_dangerous;
1719 value -= htab->root.sgot->output_section->vma;
1720 value += addend;
1722 if ((long) value > 0x7fff || (long) value < -0x8000)
1723 return bfd_reloc_overflow;
1725 bfd_put_16 (input_bfd, value, hit_data);
1726 return bfd_reloc_ok;
1728 case R_MN10300_PLT32:
1729 if (h != NULL
1730 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1731 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1732 && h->plt.offset != (bfd_vma) -1)
1734 if (dynobj == NULL)
1735 return bfd_reloc_dangerous;
1737 splt = htab->root.splt;
1738 value = (splt->output_section->vma
1739 + splt->output_offset
1740 + h->plt.offset) - value;
1743 value -= (input_section->output_section->vma
1744 + input_section->output_offset);
1745 value -= offset;
1746 value += addend;
1748 bfd_put_32 (input_bfd, value, hit_data);
1749 return bfd_reloc_ok;
1751 case R_MN10300_PLT16:
1752 if (h != NULL
1753 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1754 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1755 && h->plt.offset != (bfd_vma) -1)
1757 if (dynobj == NULL)
1758 return bfd_reloc_dangerous;
1760 splt = htab->root.splt;
1761 value = (splt->output_section->vma
1762 + splt->output_offset
1763 + h->plt.offset) - value;
1766 value -= (input_section->output_section->vma
1767 + input_section->output_offset);
1768 value -= offset;
1769 value += addend;
1771 if ((long) value > 0x7fff || (long) value < -0x8000)
1772 return bfd_reloc_overflow;
1774 bfd_put_16 (input_bfd, value, hit_data);
1775 return bfd_reloc_ok;
1777 case R_MN10300_TLS_LDO:
1778 value = dtpoff (info, value);
1779 bfd_put_32 (input_bfd, value + addend, hit_data);
1780 return bfd_reloc_ok;
1782 case R_MN10300_TLS_LE:
1783 value = tpoff (info, value);
1784 bfd_put_32 (input_bfd, value + addend, hit_data);
1785 return bfd_reloc_ok;
1787 case R_MN10300_TLS_LD:
1788 if (dynobj == NULL)
1789 return bfd_reloc_dangerous;
1791 sgot = htab->root.sgot;
1792 BFD_ASSERT (sgot != NULL);
1793 value = htab->tls_ldm_got.offset + sgot->output_offset;
1794 bfd_put_32 (input_bfd, value, hit_data);
1796 if (!htab->tls_ldm_got.rel_emitted)
1798 asection *srelgot = htab->root.srelgot;
1799 Elf_Internal_Rela rel;
1801 BFD_ASSERT (srelgot != NULL);
1802 htab->tls_ldm_got.rel_emitted ++;
1803 rel.r_offset = (sgot->output_section->vma
1804 + sgot->output_offset
1805 + htab->tls_ldm_got.offset);
1806 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + htab->tls_ldm_got.offset);
1807 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + htab->tls_ldm_got.offset+4);
1808 rel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD);
1809 rel.r_addend = 0;
1810 bfd_elf32_swap_reloca_out (output_bfd, & rel,
1811 (bfd_byte *) ((Elf32_External_Rela *) srelgot->contents
1812 + srelgot->reloc_count));
1813 ++ srelgot->reloc_count;
1816 return bfd_reloc_ok;
1818 case R_MN10300_TLS_GOTIE:
1819 value = tpoff (info, value);
1820 /* Fall Through. */
1822 case R_MN10300_TLS_GD:
1823 case R_MN10300_TLS_IE:
1824 case R_MN10300_GOT32:
1825 case R_MN10300_GOT24:
1826 case R_MN10300_GOT16:
1827 if (dynobj == NULL)
1828 return bfd_reloc_dangerous;
1830 sgot = htab->root.sgot;
1831 if (r_type == R_MN10300_TLS_GD)
1832 value = dtpoff (info, value);
1834 if (h != NULL)
1836 bfd_vma off;
1838 off = h->got.offset;
1839 /* Offsets in the GOT are allocated in check_relocs
1840 which is not called for shared libraries... */
1841 if (off == (bfd_vma) -1)
1842 off = 0;
1844 if (sgot->contents != NULL
1845 && (! elf_hash_table (info)->dynamic_sections_created
1846 || SYMBOL_REFERENCES_LOCAL (info, h)))
1847 /* This is actually a static link, or it is a
1848 -Bsymbolic link and the symbol is defined
1849 locally, or the symbol was forced to be local
1850 because of a version file. We must initialize
1851 this entry in the global offset table.
1853 When doing a dynamic link, we create a .rela.got
1854 relocation entry to initialize the value. This
1855 is done in the finish_dynamic_symbol routine. */
1856 bfd_put_32 (output_bfd, value,
1857 sgot->contents + off);
1859 value = sgot->output_offset + off;
1861 else
1863 bfd_vma off;
1865 off = elf_local_got_offsets (input_bfd)[symndx];
1867 if (off & 1)
1868 bfd_put_32 (output_bfd, value, sgot->contents + (off & ~ 1));
1869 else
1871 bfd_put_32 (output_bfd, value, sgot->contents + off);
1873 if (bfd_link_pic (info))
1875 asection *srelgot = htab->root.srelgot;;
1876 Elf_Internal_Rela outrel;
1878 BFD_ASSERT (srelgot != NULL);
1880 outrel.r_offset = (sgot->output_section->vma
1881 + sgot->output_offset
1882 + off);
1883 switch (r_type)
1885 case R_MN10300_TLS_GD:
1886 outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPOFF);
1887 outrel.r_offset = (sgot->output_section->vma
1888 + sgot->output_offset
1889 + off + 4);
1890 bfd_elf32_swap_reloca_out (output_bfd, & outrel,
1891 (bfd_byte *) (((Elf32_External_Rela *)
1892 srelgot->contents)
1893 + srelgot->reloc_count));
1894 ++ srelgot->reloc_count;
1895 outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_DTPMOD);
1896 break;
1897 case R_MN10300_TLS_GOTIE:
1898 case R_MN10300_TLS_IE:
1899 outrel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_TPOFF);
1900 break;
1901 default:
1902 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1903 break;
1906 outrel.r_addend = value;
1907 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
1908 (bfd_byte *) (((Elf32_External_Rela *)
1909 srelgot->contents)
1910 + srelgot->reloc_count));
1911 ++ srelgot->reloc_count;
1912 elf_local_got_offsets (input_bfd)[symndx] |= 1;
1915 value = sgot->output_offset + (off & ~(bfd_vma) 1);
1919 value += addend;
1921 if (r_type == R_MN10300_TLS_IE)
1923 value += sgot->output_section->vma;
1924 bfd_put_32 (input_bfd, value, hit_data);
1925 return bfd_reloc_ok;
1927 else if (r_type == R_MN10300_TLS_GOTIE
1928 || r_type == R_MN10300_TLS_GD
1929 || r_type == R_MN10300_TLS_LD)
1931 bfd_put_32 (input_bfd, value, hit_data);
1932 return bfd_reloc_ok;
1934 else if (r_type == R_MN10300_GOT32)
1936 bfd_put_32 (input_bfd, value, hit_data);
1937 return bfd_reloc_ok;
1939 else if (r_type == R_MN10300_GOT24)
1941 if ((long) value > 0x7fffff || (long) value < -0x800000)
1942 return bfd_reloc_overflow;
1944 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1945 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1946 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1947 return bfd_reloc_ok;
1949 else if (r_type == R_MN10300_GOT16)
1951 if ((long) value > 0x7fff || (long) value < -0x8000)
1952 return bfd_reloc_overflow;
1954 bfd_put_16 (input_bfd, value, hit_data);
1955 return bfd_reloc_ok;
1957 /* Fall through. */
1959 default:
1960 return bfd_reloc_notsupported;
1964 /* Relocate an MN10300 ELF section. */
1966 static int
1967 mn10300_elf_relocate_section (bfd *output_bfd,
1968 struct bfd_link_info *info,
1969 bfd *input_bfd,
1970 asection *input_section,
1971 bfd_byte *contents,
1972 Elf_Internal_Rela *relocs,
1973 Elf_Internal_Sym *local_syms,
1974 asection **local_sections)
1976 Elf_Internal_Shdr *symtab_hdr;
1977 struct elf_link_hash_entry **sym_hashes;
1978 Elf_Internal_Rela *rel, *relend;
1979 Elf_Internal_Rela * trel;
1981 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1982 sym_hashes = elf_sym_hashes (input_bfd);
1984 rel = relocs;
1985 relend = relocs + input_section->reloc_count;
1986 for (; rel < relend; rel++)
1988 int r_type;
1989 reloc_howto_type *howto;
1990 unsigned long r_symndx;
1991 Elf_Internal_Sym *sym;
1992 asection *sec;
1993 struct elf32_mn10300_link_hash_entry *h;
1994 bfd_vma relocation;
1995 bfd_reloc_status_type r;
1996 int tls_r_type;
1997 bool unresolved_reloc = false;
1998 bool warned, ignored;
1999 struct elf_link_hash_entry * hh;
2001 relocation = 0;
2002 r_symndx = ELF32_R_SYM (rel->r_info);
2003 r_type = ELF32_R_TYPE (rel->r_info);
2004 howto = elf_mn10300_howto_table + r_type;
2006 /* Just skip the vtable gc relocs. */
2007 if (r_type == R_MN10300_GNU_VTINHERIT
2008 || r_type == R_MN10300_GNU_VTENTRY)
2009 continue;
2011 h = NULL;
2012 sym = NULL;
2013 sec = NULL;
2014 if (r_symndx < symtab_hdr->sh_info)
2015 hh = NULL;
2016 else
2018 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2019 r_symndx, symtab_hdr, sym_hashes,
2020 hh, sec, relocation,
2021 unresolved_reloc, warned, ignored);
2023 h = elf_mn10300_hash_entry (hh);
2025 tls_r_type = elf_mn10300_tls_transition (info, r_type, hh, input_section, 0);
2026 if (tls_r_type != r_type)
2028 bool had_plt;
2030 had_plt = mn10300_do_tls_transition (input_bfd, r_type, tls_r_type,
2031 contents, rel->r_offset);
2032 r_type = tls_r_type;
2033 howto = elf_mn10300_howto_table + r_type;
2035 if (had_plt)
2036 for (trel = rel+1; trel < relend; trel++)
2037 if ((ELF32_R_TYPE (trel->r_info) == R_MN10300_PLT32
2038 || ELF32_R_TYPE (trel->r_info) == R_MN10300_PCREL32)
2039 && rel->r_offset + had_plt == trel->r_offset)
2040 trel->r_info = ELF32_R_INFO (0, R_MN10300_NONE);
2043 if (r_symndx < symtab_hdr->sh_info)
2045 sym = local_syms + r_symndx;
2046 sec = local_sections[r_symndx];
2047 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2049 else
2051 if ((h->root.root.type == bfd_link_hash_defined
2052 || h->root.root.type == bfd_link_hash_defweak)
2053 && ( r_type == R_MN10300_GOTPC32
2054 || r_type == R_MN10300_GOTPC16
2055 || (( r_type == R_MN10300_PLT32
2056 || r_type == R_MN10300_PLT16)
2057 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2058 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2059 && h->root.plt.offset != (bfd_vma) -1)
2060 || (( r_type == R_MN10300_GOT32
2061 || r_type == R_MN10300_GOT24
2062 || r_type == R_MN10300_TLS_GD
2063 || r_type == R_MN10300_TLS_LD
2064 || r_type == R_MN10300_TLS_GOTIE
2065 || r_type == R_MN10300_TLS_IE
2066 || r_type == R_MN10300_GOT16)
2067 && elf_hash_table (info)->dynamic_sections_created
2068 && !SYMBOL_REFERENCES_LOCAL (info, hh))
2069 || (r_type == R_MN10300_32
2070 && !SYMBOL_REFERENCES_LOCAL (info, hh)
2071 /* _32 relocs in executables force _COPY relocs,
2072 such that the address of the symbol ends up
2073 being local. */
2074 && (((input_section->flags & SEC_ALLOC) != 0
2075 && !bfd_link_executable (info))
2076 /* DWARF will emit R_MN10300_32 relocations
2077 in its sections against symbols defined
2078 externally in shared libraries. We can't
2079 do anything with them here. */
2080 || ((input_section->flags & SEC_DEBUGGING) != 0
2081 && h->root.def_dynamic)))))
2082 /* In these cases, we don't need the relocation
2083 value. We check specially because in some
2084 obscure cases sec->output_section will be NULL. */
2085 relocation = 0;
2087 else if (!bfd_link_relocatable (info) && unresolved_reloc
2088 && _bfd_elf_section_offset (output_bfd, info, input_section,
2089 rel->r_offset) != (bfd_vma) -1)
2091 _bfd_error_handler
2092 /* xgettext:c-format */
2093 (_("%pB(%pA+%#" PRIx64 "): "
2094 "unresolvable %s relocation against symbol `%s'"),
2095 input_bfd,
2096 input_section,
2097 (uint64_t) rel->r_offset,
2098 howto->name,
2099 h->root.root.root.string);
2102 if (sec != NULL && discarded_section (sec))
2103 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2104 rel, 1, relend, howto, 0, contents);
2106 if (bfd_link_relocatable (info))
2107 continue;
2109 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
2110 input_section,
2111 contents, rel->r_offset,
2112 relocation, rel->r_addend,
2113 (struct elf_link_hash_entry *) h,
2114 r_symndx,
2115 info, sec, h == NULL);
2117 if (r != bfd_reloc_ok)
2119 const char *name;
2120 const char *msg = NULL;
2122 if (h != NULL)
2123 name = h->root.root.root.string;
2124 else
2126 name = (bfd_elf_string_from_elf_section
2127 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2128 if (name == NULL || *name == '\0')
2129 name = bfd_section_name (sec);
2132 switch (r)
2134 case bfd_reloc_overflow:
2135 (*info->callbacks->reloc_overflow)
2136 (info, (h ? &h->root.root : NULL), name, howto->name,
2137 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2138 break;
2140 case bfd_reloc_undefined:
2141 (*info->callbacks->undefined_symbol)
2142 (info, name, input_bfd, input_section, rel->r_offset, true);
2143 break;
2145 case bfd_reloc_outofrange:
2146 msg = _("internal error: out of range error");
2147 goto common_error;
2149 case bfd_reloc_notsupported:
2150 msg = _("internal error: unsupported relocation error");
2151 goto common_error;
2153 case bfd_reloc_dangerous:
2154 if (r_type == R_MN10300_PCREL32)
2155 msg = _("error: inappropriate relocation type for shared"
2156 " library (did you forget -fpic?)");
2157 else if (r_type == R_MN10300_GOT32)
2158 /* xgettext:c-format */
2159 msg = _("%pB: taking the address of protected function"
2160 " '%s' cannot be done when making a shared library");
2161 else
2162 msg = _("internal error: suspicious relocation type used"
2163 " in shared library");
2164 goto common_error;
2166 default:
2167 msg = _("internal error: unknown error");
2168 /* Fall through. */
2170 common_error:
2171 _bfd_error_handler (msg, input_bfd, name);
2172 bfd_set_error (bfd_error_bad_value);
2173 return false;
2178 return true;
2181 /* Finish initializing one hash table entry. */
2183 static bool
2184 elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry,
2185 void * in_args)
2187 struct elf32_mn10300_link_hash_entry *entry;
2188 struct bfd_link_info *link_info = (struct bfd_link_info *) in_args;
2189 unsigned int byte_count = 0;
2191 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
2193 /* If we already know we want to convert "call" to "calls" for calls
2194 to this symbol, then return now. */
2195 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
2196 return true;
2198 /* If there are no named calls to this symbol, or there's nothing we
2199 can move from the function itself into the "call" instruction,
2200 then note that all "call" instructions should be converted into
2201 "calls" instructions and return. If a symbol is available for
2202 dynamic symbol resolution (overridable or overriding), avoid
2203 custom calling conventions. */
2204 if (entry->direct_calls == 0
2205 || (entry->stack_size == 0 && entry->movm_args == 0)
2206 || (elf_hash_table (link_info)->dynamic_sections_created
2207 && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
2208 && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
2210 /* Make a note that we should convert "call" instructions to "calls"
2211 instructions for calls to this symbol. */
2212 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2213 return true;
2216 /* We may be able to move some instructions from the function itself into
2217 the "call" instruction. Count how many bytes we might be able to
2218 eliminate in the function itself. */
2220 /* A movm instruction is two bytes. */
2221 if (entry->movm_args)
2222 byte_count += 2;
2224 /* Count the insn to allocate stack space too. */
2225 if (entry->stack_size > 0)
2227 if (entry->stack_size <= 128)
2228 byte_count += 3;
2229 else
2230 byte_count += 4;
2233 /* If using "call" will result in larger code, then turn all
2234 the associated "call" instructions into "calls" instructions. */
2235 if (byte_count < entry->direct_calls)
2236 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2238 /* This routine never fails. */
2239 return true;
2242 /* Used to count hash table entries. */
2244 static bool
2245 elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED,
2246 void * in_args)
2248 int *count = (int *) in_args;
2250 (*count) ++;
2251 return true;
2254 /* Used to enumerate hash table entries into a linear array. */
2256 static bool
2257 elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry,
2258 void * in_args)
2260 struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args;
2262 **ptr = gen_entry;
2263 (*ptr) ++;
2264 return true;
2267 /* Used to sort the array created by the above. */
2269 static int
2270 sort_by_value (const void *va, const void *vb)
2272 struct elf32_mn10300_link_hash_entry *a
2273 = *(struct elf32_mn10300_link_hash_entry **) va;
2274 struct elf32_mn10300_link_hash_entry *b
2275 = *(struct elf32_mn10300_link_hash_entry **) vb;
2277 return a->value - b->value;
2280 /* Compute the stack size and movm arguments for the function
2281 referred to by HASH at address ADDR in section with
2282 contents CONTENTS, store the information in the hash table. */
2284 static void
2285 compute_function_info (bfd *abfd,
2286 struct elf32_mn10300_link_hash_entry *hash,
2287 bfd_vma addr,
2288 unsigned char *contents)
2290 unsigned char byte1, byte2;
2291 /* We only care about a very small subset of the possible prologue
2292 sequences here. Basically we look for:
2294 movm [d2,d3,a2,a3],sp (optional)
2295 add <size>,sp (optional, and only for sizes which fit in an unsigned
2296 8 bit number)
2298 If we find anything else, we quit. */
2300 /* Look for movm [regs],sp. */
2301 byte1 = bfd_get_8 (abfd, contents + addr);
2302 byte2 = bfd_get_8 (abfd, contents + addr + 1);
2304 if (byte1 == 0xcf)
2306 hash->movm_args = byte2;
2307 addr += 2;
2308 byte1 = bfd_get_8 (abfd, contents + addr);
2309 byte2 = bfd_get_8 (abfd, contents + addr + 1);
2312 /* Now figure out how much stack space will be allocated by the movm
2313 instruction. We need this kept separate from the function's normal
2314 stack space. */
2315 if (hash->movm_args)
2317 /* Space for d2. */
2318 if (hash->movm_args & 0x80)
2319 hash->movm_stack_size += 4;
2321 /* Space for d3. */
2322 if (hash->movm_args & 0x40)
2323 hash->movm_stack_size += 4;
2325 /* Space for a2. */
2326 if (hash->movm_args & 0x20)
2327 hash->movm_stack_size += 4;
2329 /* Space for a3. */
2330 if (hash->movm_args & 0x10)
2331 hash->movm_stack_size += 4;
2333 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
2334 if (hash->movm_args & 0x08)
2335 hash->movm_stack_size += 8 * 4;
2337 if (bfd_get_mach (abfd) == bfd_mach_am33
2338 || bfd_get_mach (abfd) == bfd_mach_am33_2)
2340 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
2341 if (hash->movm_args & 0x1)
2342 hash->movm_stack_size += 6 * 4;
2344 /* exreg1 space. e4, e5, e6, e7 */
2345 if (hash->movm_args & 0x2)
2346 hash->movm_stack_size += 4 * 4;
2348 /* exreg0 space. e2, e3 */
2349 if (hash->movm_args & 0x4)
2350 hash->movm_stack_size += 2 * 4;
2354 /* Now look for the two stack adjustment variants. */
2355 if (byte1 == 0xf8 && byte2 == 0xfe)
2357 int temp = bfd_get_8 (abfd, contents + addr + 2);
2358 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
2360 hash->stack_size = -temp;
2362 else if (byte1 == 0xfa && byte2 == 0xfe)
2364 int temp = bfd_get_16 (abfd, contents + addr + 2);
2365 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
2366 temp = -temp;
2368 if (temp < 255)
2369 hash->stack_size = temp;
2372 /* If the total stack to be allocated by the call instruction is more
2373 than 255 bytes, then we can't remove the stack adjustment by using
2374 "call" (we might still be able to remove the "movm" instruction. */
2375 if (hash->stack_size + hash->movm_stack_size > 255)
2376 hash->stack_size = 0;
2379 /* Delete some bytes from a section while relaxing. */
2381 static bool
2382 mn10300_elf_relax_delete_bytes (bfd *abfd,
2383 asection *sec,
2384 bfd_vma addr,
2385 int count)
2387 Elf_Internal_Shdr *symtab_hdr;
2388 unsigned int sec_shndx;
2389 bfd_byte *contents;
2390 Elf_Internal_Rela *irel, *irelend;
2391 Elf_Internal_Rela *irelalign;
2392 bfd_vma toaddr;
2393 Elf_Internal_Sym *isym, *isymend;
2394 struct elf_link_hash_entry **sym_hashes;
2395 struct elf_link_hash_entry **end_hashes;
2396 unsigned int symcount;
2398 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2400 contents = elf_section_data (sec)->this_hdr.contents;
2402 irelalign = NULL;
2403 toaddr = sec->size;
2405 irel = elf_section_data (sec)->relocs;
2406 irelend = irel + sec->reloc_count;
2408 if (sec->reloc_count > 0)
2410 /* If there is an align reloc at the end of the section ignore it.
2411 GAS creates these relocs for reasons of its own, and they just
2412 serve to keep the section artifically inflated. */
2413 if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN)
2414 --irelend;
2416 /* The deletion must stop at the next ALIGN reloc for an alignment
2417 power larger than, or not a multiple of, the number of bytes we
2418 are deleting. */
2419 for (; irel < irelend; irel++)
2421 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
2422 && irel->r_offset > addr
2423 && irel->r_offset < toaddr)
2425 int alignment = 1 << irel->r_addend;
2427 if (count < alignment
2428 || alignment % count != 0)
2430 irelalign = irel;
2431 toaddr = irel->r_offset;
2432 break;
2438 /* Actually delete the bytes. */
2439 memmove (contents + addr, contents + addr + count,
2440 (size_t) (toaddr - addr - count));
2442 /* Adjust the section's size if we are shrinking it, or else
2443 pad the bytes between the end of the shrunken region and
2444 the start of the next region with NOP codes. */
2445 if (irelalign == NULL)
2447 sec->size -= count;
2448 /* Include symbols at the end of the section, but
2449 not at the end of a sub-region of the section. */
2450 toaddr ++;
2452 else
2454 int i;
2456 #define NOP_OPCODE 0xcb
2458 for (i = 0; i < count; i ++)
2459 bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
2462 /* Adjust all the relocs. */
2463 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
2465 /* Get the new reloc address. */
2466 if ((irel->r_offset > addr
2467 && irel->r_offset < toaddr)
2468 || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
2469 && irel->r_offset == toaddr))
2470 irel->r_offset -= count;
2473 /* Adjust the local symbols in the section, reducing their value
2474 by the number of bytes deleted. Note - symbols within the deleted
2475 region are moved to the address of the start of the region, which
2476 actually means that they will address the byte beyond the end of
2477 the region once the deletion has been completed. */
2478 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2479 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
2480 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
2482 if (isym->st_shndx == sec_shndx
2483 && isym->st_value > addr
2484 && isym->st_value < toaddr)
2486 if (isym->st_value < addr + count)
2487 isym->st_value = addr;
2488 else
2489 isym->st_value -= count;
2491 /* Adjust the function symbol's size as well. */
2492 else if (isym->st_shndx == sec_shndx
2493 && ELF_ST_TYPE (isym->st_info) == STT_FUNC
2494 && isym->st_value + isym->st_size > addr
2495 && isym->st_value + isym->st_size < toaddr)
2496 isym->st_size -= count;
2499 /* Now adjust the global symbols defined in this section. */
2500 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2501 - symtab_hdr->sh_info);
2502 sym_hashes = elf_sym_hashes (abfd);
2503 end_hashes = sym_hashes + symcount;
2504 for (; sym_hashes < end_hashes; sym_hashes++)
2506 struct elf_link_hash_entry *sym_hash = *sym_hashes;
2508 if ((sym_hash->root.type == bfd_link_hash_defined
2509 || sym_hash->root.type == bfd_link_hash_defweak)
2510 && sym_hash->root.u.def.section == sec
2511 && sym_hash->root.u.def.value > addr
2512 && sym_hash->root.u.def.value < toaddr)
2514 if (sym_hash->root.u.def.value < addr + count)
2515 sym_hash->root.u.def.value = addr;
2516 else
2517 sym_hash->root.u.def.value -= count;
2519 /* Adjust the function symbol's size as well. */
2520 else if (sym_hash->root.type == bfd_link_hash_defined
2521 && sym_hash->root.u.def.section == sec
2522 && sym_hash->type == STT_FUNC
2523 && sym_hash->root.u.def.value + sym_hash->size > addr
2524 && sym_hash->root.u.def.value + sym_hash->size < toaddr)
2525 sym_hash->size -= count;
2528 /* See if we can move the ALIGN reloc forward.
2529 We have adjusted r_offset for it already. */
2530 if (irelalign != NULL)
2532 bfd_vma alignto, alignaddr;
2534 if ((int) irelalign->r_addend > 0)
2536 /* This is the old address. */
2537 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
2538 /* This is where the align points to now. */
2539 alignaddr = BFD_ALIGN (irelalign->r_offset,
2540 1 << irelalign->r_addend);
2541 if (alignaddr < alignto)
2542 /* Tail recursion. */
2543 return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr,
2544 (int) (alignto - alignaddr));
2548 return true;
2551 /* Return TRUE if a symbol exists at the given address, else return
2552 FALSE. */
2554 static bool
2555 mn10300_elf_symbol_address_p (bfd *abfd,
2556 asection *sec,
2557 Elf_Internal_Sym *isym,
2558 bfd_vma addr)
2560 Elf_Internal_Shdr *symtab_hdr;
2561 unsigned int sec_shndx;
2562 Elf_Internal_Sym *isymend;
2563 struct elf_link_hash_entry **sym_hashes;
2564 struct elf_link_hash_entry **end_hashes;
2565 unsigned int symcount;
2567 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2569 /* Examine all the symbols. */
2570 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2571 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
2572 if (isym->st_shndx == sec_shndx
2573 && isym->st_value == addr)
2574 return true;
2576 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2577 - symtab_hdr->sh_info);
2578 sym_hashes = elf_sym_hashes (abfd);
2579 end_hashes = sym_hashes + symcount;
2580 for (; sym_hashes < end_hashes; sym_hashes++)
2582 struct elf_link_hash_entry *sym_hash = *sym_hashes;
2584 if ((sym_hash->root.type == bfd_link_hash_defined
2585 || sym_hash->root.type == bfd_link_hash_defweak)
2586 && sym_hash->root.u.def.section == sec
2587 && sym_hash->root.u.def.value == addr)
2588 return true;
2591 return false;
2594 /* This function handles relaxing for the mn10300.
2596 There are quite a few relaxing opportunities available on the mn10300:
2598 * calls:32 -> calls:16 2 bytes
2599 * call:32 -> call:16 2 bytes
2601 * call:32 -> calls:32 1 byte
2602 * call:16 -> calls:16 1 byte
2603 * These are done anytime using "calls" would result
2604 in smaller code, or when necessary to preserve the
2605 meaning of the program.
2607 * call:32 varies
2608 * call:16
2609 * In some circumstances we can move instructions
2610 from a function prologue into a "call" instruction.
2611 This is only done if the resulting code is no larger
2612 than the original code.
2614 * jmp:32 -> jmp:16 2 bytes
2615 * jmp:16 -> bra:8 1 byte
2617 * If the previous instruction is a conditional branch
2618 around the jump/bra, we may be able to reverse its condition
2619 and change its target to the jump's target. The jump/bra
2620 can then be deleted. 2 bytes
2622 * mov abs32 -> mov abs16 1 or 2 bytes
2624 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
2625 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
2627 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
2628 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
2630 We don't handle imm16->imm8 or d16->d8 as they're very rare
2631 and somewhat more difficult to support. */
2633 static bool
2634 mn10300_elf_relax_section (bfd *abfd,
2635 asection *sec,
2636 struct bfd_link_info *link_info,
2637 bool *again)
2639 Elf_Internal_Shdr *symtab_hdr;
2640 Elf_Internal_Rela *internal_relocs = NULL;
2641 Elf_Internal_Rela *irel, *irelend;
2642 bfd_byte *contents = NULL;
2643 Elf_Internal_Sym *isymbuf = NULL;
2644 struct elf32_mn10300_link_hash_table *hash_table;
2645 asection *section = sec;
2646 bfd_vma align_gap_adjustment;
2648 if (bfd_link_relocatable (link_info))
2649 (*link_info->callbacks->einfo)
2650 (_("%P%F: --relax and -r may not be used together\n"));
2652 /* Assume nothing changes. */
2653 *again = false;
2655 /* We need a pointer to the mn10300 specific hash table. */
2656 hash_table = elf32_mn10300_hash_table (link_info);
2657 if (hash_table == NULL)
2658 return false;
2660 /* Initialize fields in each hash table entry the first time through. */
2661 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
2663 bfd *input_bfd;
2665 /* Iterate over all the input bfds. */
2666 for (input_bfd = link_info->input_bfds;
2667 input_bfd != NULL;
2668 input_bfd = input_bfd->link.next)
2670 /* We're going to need all the symbols for each bfd. */
2671 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2672 if (symtab_hdr->sh_info != 0)
2674 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2675 if (isymbuf == NULL)
2676 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2677 symtab_hdr->sh_info, 0,
2678 NULL, NULL, NULL);
2679 if (isymbuf == NULL)
2680 goto error_return;
2683 /* Iterate over each section in this bfd. */
2684 for (section = input_bfd->sections;
2685 section != NULL;
2686 section = section->next)
2688 struct elf32_mn10300_link_hash_entry *hash;
2689 asection *sym_sec = NULL;
2690 const char *sym_name;
2691 char *new_name;
2693 /* If there's nothing to do in this section, skip it. */
2694 if (! ((section->flags & SEC_RELOC) != 0
2695 && section->reloc_count != 0))
2696 continue;
2697 if ((section->flags & SEC_ALLOC) == 0)
2698 continue;
2700 /* Get cached copy of section contents if it exists. */
2701 if (elf_section_data (section)->this_hdr.contents != NULL)
2702 contents = elf_section_data (section)->this_hdr.contents;
2703 else if (section->size != 0)
2705 /* Go get them off disk. */
2706 if (!bfd_malloc_and_get_section (input_bfd, section,
2707 &contents))
2708 goto error_return;
2710 else
2711 contents = NULL;
2713 /* If there aren't any relocs, then there's nothing to do. */
2714 if ((section->flags & SEC_RELOC) != 0
2715 && section->reloc_count != 0)
2717 /* Get a copy of the native relocations. */
2718 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
2719 NULL, NULL,
2720 link_info->keep_memory);
2721 if (internal_relocs == NULL)
2722 goto error_return;
2724 /* Now examine each relocation. */
2725 irel = internal_relocs;
2726 irelend = irel + section->reloc_count;
2727 for (; irel < irelend; irel++)
2729 long r_type;
2730 unsigned long r_index;
2731 unsigned char code;
2733 r_type = ELF32_R_TYPE (irel->r_info);
2734 r_index = ELF32_R_SYM (irel->r_info);
2736 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
2737 goto error_return;
2739 /* We need the name and hash table entry of the target
2740 symbol! */
2741 hash = NULL;
2742 sym_sec = NULL;
2744 if (r_index < symtab_hdr->sh_info)
2746 /* A local symbol. */
2747 Elf_Internal_Sym *isym;
2748 struct elf_link_hash_table *elftab;
2749 size_t amt;
2751 isym = isymbuf + r_index;
2752 if (isym->st_shndx == SHN_UNDEF)
2753 sym_sec = bfd_und_section_ptr;
2754 else if (isym->st_shndx == SHN_ABS)
2755 sym_sec = bfd_abs_section_ptr;
2756 else if (isym->st_shndx == SHN_COMMON)
2757 sym_sec = bfd_com_section_ptr;
2758 else
2759 sym_sec
2760 = bfd_section_from_elf_index (input_bfd,
2761 isym->st_shndx);
2763 sym_name
2764 = bfd_elf_string_from_elf_section (input_bfd,
2765 (symtab_hdr
2766 ->sh_link),
2767 isym->st_name);
2769 /* If it isn't a function, then we don't care
2770 about it. */
2771 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
2772 continue;
2774 /* Tack on an ID so we can uniquely identify this
2775 local symbol in the global hash table. */
2776 amt = strlen (sym_name) + 10;
2777 new_name = bfd_malloc (amt);
2778 if (new_name == NULL)
2779 goto error_return;
2781 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
2782 sym_name = new_name;
2784 elftab = &hash_table->static_hash_table->root;
2785 hash = ((struct elf32_mn10300_link_hash_entry *)
2786 elf_link_hash_lookup (elftab, sym_name,
2787 true, true, false));
2788 free (new_name);
2790 else
2792 r_index -= symtab_hdr->sh_info;
2793 hash = (struct elf32_mn10300_link_hash_entry *)
2794 elf_sym_hashes (input_bfd)[r_index];
2797 sym_name = hash->root.root.root.string;
2798 if ((section->flags & SEC_CODE) != 0)
2800 /* If this is not a "call" instruction, then we
2801 should convert "call" instructions to "calls"
2802 instructions. */
2803 code = bfd_get_8 (input_bfd,
2804 contents + irel->r_offset - 1);
2805 if (code != 0xdd && code != 0xcd)
2806 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2809 /* If this is a jump/call, then bump the
2810 direct_calls counter. Else force "call" to
2811 "calls" conversions. */
2812 if (r_type == R_MN10300_PCREL32
2813 || r_type == R_MN10300_PLT32
2814 || r_type == R_MN10300_PLT16
2815 || r_type == R_MN10300_PCREL16)
2816 hash->direct_calls++;
2817 else
2818 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2822 /* Now look at the actual contents to get the stack size,
2823 and a list of what registers were saved in the prologue
2824 (ie movm_args). */
2825 if ((section->flags & SEC_CODE) != 0)
2827 Elf_Internal_Sym *isym, *isymend;
2828 unsigned int sec_shndx;
2829 struct elf_link_hash_entry **hashes;
2830 struct elf_link_hash_entry **end_hashes;
2831 unsigned int symcount;
2833 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2834 section);
2836 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2837 - symtab_hdr->sh_info);
2838 hashes = elf_sym_hashes (input_bfd);
2839 end_hashes = hashes + symcount;
2841 /* Look at each function defined in this section and
2842 update info for that function. */
2843 isymend = isymbuf + symtab_hdr->sh_info;
2844 for (isym = isymbuf; isym < isymend; isym++)
2846 if (isym->st_shndx == sec_shndx
2847 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
2849 struct elf_link_hash_table *elftab;
2850 size_t amt;
2851 struct elf_link_hash_entry **lhashes = hashes;
2853 /* Skip a local symbol if it aliases a
2854 global one. */
2855 for (; lhashes < end_hashes; lhashes++)
2857 hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
2858 if ((hash->root.root.type == bfd_link_hash_defined
2859 || hash->root.root.type == bfd_link_hash_defweak)
2860 && hash->root.root.u.def.section == section
2861 && hash->root.type == STT_FUNC
2862 && hash->root.root.u.def.value == isym->st_value)
2863 break;
2865 if (lhashes != end_hashes)
2866 continue;
2868 if (isym->st_shndx == SHN_UNDEF)
2869 sym_sec = bfd_und_section_ptr;
2870 else if (isym->st_shndx == SHN_ABS)
2871 sym_sec = bfd_abs_section_ptr;
2872 else if (isym->st_shndx == SHN_COMMON)
2873 sym_sec = bfd_com_section_ptr;
2874 else
2875 sym_sec
2876 = bfd_section_from_elf_index (input_bfd,
2877 isym->st_shndx);
2879 sym_name = (bfd_elf_string_from_elf_section
2880 (input_bfd, symtab_hdr->sh_link,
2881 isym->st_name));
2883 /* Tack on an ID so we can uniquely identify this
2884 local symbol in the global hash table. */
2885 amt = strlen (sym_name) + 10;
2886 new_name = bfd_malloc (amt);
2887 if (new_name == NULL)
2888 goto error_return;
2890 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
2891 sym_name = new_name;
2893 elftab = &hash_table->static_hash_table->root;
2894 hash = ((struct elf32_mn10300_link_hash_entry *)
2895 elf_link_hash_lookup (elftab, sym_name,
2896 true, true, false));
2897 free (new_name);
2898 compute_function_info (input_bfd, hash,
2899 isym->st_value, contents);
2900 hash->value = isym->st_value;
2904 for (; hashes < end_hashes; hashes++)
2906 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
2907 if ((hash->root.root.type == bfd_link_hash_defined
2908 || hash->root.root.type == bfd_link_hash_defweak)
2909 && hash->root.root.u.def.section == section
2910 && hash->root.type == STT_FUNC)
2911 compute_function_info (input_bfd, hash,
2912 (hash)->root.root.u.def.value,
2913 contents);
2917 /* Cache or free any memory we allocated for the relocs. */
2918 if (elf_section_data (section)->relocs != internal_relocs)
2919 free (internal_relocs);
2920 internal_relocs = NULL;
2922 /* Cache or free any memory we allocated for the contents. */
2923 if (contents != NULL
2924 && elf_section_data (section)->this_hdr.contents != contents)
2926 if (! link_info->keep_memory)
2927 free (contents);
2928 else
2930 /* Cache the section contents for elf_link_input_bfd. */
2931 elf_section_data (section)->this_hdr.contents = contents;
2934 contents = NULL;
2937 /* Cache or free any memory we allocated for the symbols. */
2938 if (isymbuf != NULL
2939 && symtab_hdr->contents != (unsigned char *) isymbuf)
2941 if (! link_info->keep_memory)
2942 free (isymbuf);
2943 else
2945 /* Cache the symbols for elf_link_input_bfd. */
2946 symtab_hdr->contents = (unsigned char *) isymbuf;
2949 isymbuf = NULL;
2952 /* Now iterate on each symbol in the hash table and perform
2953 the final initialization steps on each. */
2954 elf32_mn10300_link_hash_traverse (hash_table,
2955 elf32_mn10300_finish_hash_table_entry,
2956 link_info);
2957 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2958 elf32_mn10300_finish_hash_table_entry,
2959 link_info);
2962 /* This section of code collects all our local symbols, sorts
2963 them by value, and looks for multiple symbols referring to
2964 the same address. For those symbols, the flags are merged.
2965 At this point, the only flag that can be set is
2966 MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
2967 together. */
2968 int static_count = 0, i;
2969 struct elf32_mn10300_link_hash_entry **entries;
2970 struct elf32_mn10300_link_hash_entry **ptr;
2972 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2973 elf32_mn10300_count_hash_table_entries,
2974 &static_count);
2976 entries = bfd_malloc (static_count * sizeof (* ptr));
2978 ptr = entries;
2979 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2980 elf32_mn10300_list_hash_table_entries,
2981 & ptr);
2983 qsort (entries, static_count, sizeof (entries[0]), sort_by_value);
2985 for (i = 0; i < static_count - 1; i++)
2986 if (entries[i]->value && entries[i]->value == entries[i+1]->value)
2988 int v = entries[i]->flags;
2989 int j;
2991 for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++)
2992 v |= entries[j]->flags;
2994 for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++)
2995 entries[j]->flags = v;
2997 i = j - 1;
3001 /* All entries in the hash table are fully initialized. */
3002 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
3004 /* Now that everything has been initialized, go through each
3005 code section and delete any prologue insns which will be
3006 redundant because their operations will be performed by
3007 a "call" instruction. */
3008 for (input_bfd = link_info->input_bfds;
3009 input_bfd != NULL;
3010 input_bfd = input_bfd->link.next)
3012 /* We're going to need all the local symbols for each bfd. */
3013 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3014 if (symtab_hdr->sh_info != 0)
3016 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3017 if (isymbuf == NULL)
3018 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3019 symtab_hdr->sh_info, 0,
3020 NULL, NULL, NULL);
3021 if (isymbuf == NULL)
3022 goto error_return;
3025 /* Walk over each section in this bfd. */
3026 for (section = input_bfd->sections;
3027 section != NULL;
3028 section = section->next)
3030 unsigned int sec_shndx;
3031 Elf_Internal_Sym *isym, *isymend;
3032 struct elf_link_hash_entry **hashes;
3033 struct elf_link_hash_entry **end_hashes;
3034 unsigned int symcount;
3036 /* Skip non-code sections and empty sections. */
3037 if ((section->flags & SEC_CODE) == 0 || section->size == 0)
3038 continue;
3040 if (section->reloc_count != 0)
3042 /* Get a copy of the native relocations. */
3043 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
3044 NULL, NULL,
3045 link_info->keep_memory);
3046 if (internal_relocs == NULL)
3047 goto error_return;
3050 /* Get cached copy of section contents if it exists. */
3051 if (elf_section_data (section)->this_hdr.contents != NULL)
3052 contents = elf_section_data (section)->this_hdr.contents;
3053 else
3055 /* Go get them off disk. */
3056 if (!bfd_malloc_and_get_section (input_bfd, section,
3057 &contents))
3058 goto error_return;
3061 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
3062 section);
3064 /* Now look for any function in this section which needs
3065 insns deleted from its prologue. */
3066 isymend = isymbuf + symtab_hdr->sh_info;
3067 for (isym = isymbuf; isym < isymend; isym++)
3069 struct elf32_mn10300_link_hash_entry *sym_hash;
3070 asection *sym_sec = NULL;
3071 const char *sym_name;
3072 char *new_name;
3073 struct elf_link_hash_table *elftab;
3074 size_t amt;
3076 if (isym->st_shndx != sec_shndx)
3077 continue;
3079 if (isym->st_shndx == SHN_UNDEF)
3080 sym_sec = bfd_und_section_ptr;
3081 else if (isym->st_shndx == SHN_ABS)
3082 sym_sec = bfd_abs_section_ptr;
3083 else if (isym->st_shndx == SHN_COMMON)
3084 sym_sec = bfd_com_section_ptr;
3085 else
3086 sym_sec
3087 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
3089 sym_name
3090 = bfd_elf_string_from_elf_section (input_bfd,
3091 symtab_hdr->sh_link,
3092 isym->st_name);
3094 /* Tack on an ID so we can uniquely identify this
3095 local symbol in the global hash table. */
3096 amt = strlen (sym_name) + 10;
3097 new_name = bfd_malloc (amt);
3098 if (new_name == NULL)
3099 goto error_return;
3100 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
3101 sym_name = new_name;
3103 elftab = & hash_table->static_hash_table->root;
3104 sym_hash = (struct elf32_mn10300_link_hash_entry *)
3105 elf_link_hash_lookup (elftab, sym_name,
3106 false, false, false);
3108 free (new_name);
3109 if (sym_hash == NULL)
3110 continue;
3112 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
3113 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
3115 int bytes = 0;
3117 /* Note that we've changed things. */
3118 elf_section_data (section)->relocs = internal_relocs;
3119 elf_section_data (section)->this_hdr.contents = contents;
3120 symtab_hdr->contents = (unsigned char *) isymbuf;
3122 /* Count how many bytes we're going to delete. */
3123 if (sym_hash->movm_args)
3124 bytes += 2;
3126 if (sym_hash->stack_size > 0)
3128 if (sym_hash->stack_size <= 128)
3129 bytes += 3;
3130 else
3131 bytes += 4;
3134 /* Note that we've deleted prologue bytes for this
3135 function. */
3136 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
3138 /* Actually delete the bytes. */
3139 if (!mn10300_elf_relax_delete_bytes (input_bfd,
3140 section,
3141 isym->st_value,
3142 bytes))
3143 goto error_return;
3145 /* Something changed. Not strictly necessary, but
3146 may lead to more relaxing opportunities. */
3147 *again = true;
3151 /* Look for any global functions in this section which
3152 need insns deleted from their prologues. */
3153 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3154 - symtab_hdr->sh_info);
3155 hashes = elf_sym_hashes (input_bfd);
3156 end_hashes = hashes + symcount;
3157 for (; hashes < end_hashes; hashes++)
3159 struct elf32_mn10300_link_hash_entry *sym_hash;
3161 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
3162 if ((sym_hash->root.root.type == bfd_link_hash_defined
3163 || sym_hash->root.root.type == bfd_link_hash_defweak)
3164 && sym_hash->root.root.u.def.section == section
3165 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
3166 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
3168 int bytes = 0;
3169 bfd_vma symval;
3170 struct elf_link_hash_entry **hh;
3172 /* Note that we've changed things. */
3173 elf_section_data (section)->relocs = internal_relocs;
3174 elf_section_data (section)->this_hdr.contents = contents;
3175 symtab_hdr->contents = (unsigned char *) isymbuf;
3177 /* Count how many bytes we're going to delete. */
3178 if (sym_hash->movm_args)
3179 bytes += 2;
3181 if (sym_hash->stack_size > 0)
3183 if (sym_hash->stack_size <= 128)
3184 bytes += 3;
3185 else
3186 bytes += 4;
3189 /* Note that we've deleted prologue bytes for this
3190 function. */
3191 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
3193 /* Actually delete the bytes. */
3194 symval = sym_hash->root.root.u.def.value;
3195 if (!mn10300_elf_relax_delete_bytes (input_bfd,
3196 section,
3197 symval,
3198 bytes))
3199 goto error_return;
3201 /* There may be other C++ functions symbols with the same
3202 address. If so then mark these as having had their
3203 prologue bytes deleted as well. */
3204 for (hh = elf_sym_hashes (input_bfd); hh < end_hashes; hh++)
3206 struct elf32_mn10300_link_hash_entry *h;
3208 h = (struct elf32_mn10300_link_hash_entry *) * hh;
3210 if (h != sym_hash
3211 && (h->root.root.type == bfd_link_hash_defined
3212 || h->root.root.type == bfd_link_hash_defweak)
3213 && h->root.root.u.def.section == section
3214 && ! (h->flags & MN10300_CONVERT_CALL_TO_CALLS)
3215 && h->root.root.u.def.value == symval
3216 && h->root.type == STT_FUNC)
3217 h->flags |= MN10300_DELETED_PROLOGUE_BYTES;
3220 /* Something changed. Not strictly necessary, but
3221 may lead to more relaxing opportunities. */
3222 *again = true;
3226 /* Cache or free any memory we allocated for the relocs. */
3227 if (elf_section_data (section)->relocs != internal_relocs)
3228 free (internal_relocs);
3229 internal_relocs = NULL;
3231 /* Cache or free any memory we allocated for the contents. */
3232 if (contents != NULL
3233 && elf_section_data (section)->this_hdr.contents != contents)
3235 if (! link_info->keep_memory)
3236 free (contents);
3237 else
3238 /* Cache the section contents for elf_link_input_bfd. */
3239 elf_section_data (section)->this_hdr.contents = contents;
3241 contents = NULL;
3244 /* Cache or free any memory we allocated for the symbols. */
3245 if (isymbuf != NULL
3246 && symtab_hdr->contents != (unsigned char *) isymbuf)
3248 if (! link_info->keep_memory)
3249 free (isymbuf);
3250 else
3251 /* Cache the symbols for elf_link_input_bfd. */
3252 symtab_hdr->contents = (unsigned char *) isymbuf;
3254 isymbuf = NULL;
3258 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
3259 contents = NULL;
3260 internal_relocs = NULL;
3261 isymbuf = NULL;
3262 /* For error_return. */
3263 section = sec;
3265 /* We don't have to do anything for a relocatable link, if
3266 this section does not have relocs, or if this is not a
3267 code section. */
3268 if (bfd_link_relocatable (link_info)
3269 || (sec->flags & SEC_RELOC) == 0
3270 || sec->reloc_count == 0
3271 || (sec->flags & SEC_CODE) == 0)
3272 return true;
3274 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3276 /* Get a copy of the native relocations. */
3277 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
3278 link_info->keep_memory);
3279 if (internal_relocs == NULL)
3280 goto error_return;
3282 /* Scan for worst case alignment gap changes. Note that this logic
3283 is not ideal; what we should do is run this scan for every
3284 opcode/address range and adjust accordingly, but that's
3285 expensive. Worst case is that for an alignment of N bytes, we
3286 move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc
3287 all before it. Plus, this still doesn't cover cross-section
3288 jumps with section alignment. */
3289 irelend = internal_relocs + sec->reloc_count;
3290 align_gap_adjustment = 0;
3291 for (irel = internal_relocs; irel < irelend; irel++)
3293 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN)
3295 bfd_vma adj = 1 << irel->r_addend;
3296 bfd_vma aend = irel->r_offset;
3298 aend = BFD_ALIGN (aend, 1 << irel->r_addend);
3299 adj = 2 * adj - adj - 1;
3301 /* Record the biggest adjustmnet. Skip any alignment at the
3302 end of our section. */
3303 if (align_gap_adjustment < adj
3304 && aend < sec->output_section->vma + sec->output_offset + sec->size)
3305 align_gap_adjustment = adj;
3309 /* Walk through them looking for relaxing opportunities. */
3310 irelend = internal_relocs + sec->reloc_count;
3311 for (irel = internal_relocs; irel < irelend; irel++)
3313 bfd_vma symval;
3314 bfd_signed_vma jump_offset;
3315 asection *sym_sec = NULL;
3316 struct elf32_mn10300_link_hash_entry *h = NULL;
3318 /* If this isn't something that can be relaxed, then ignore
3319 this reloc. */
3320 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
3321 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
3322 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
3323 continue;
3325 /* Get the section contents if we haven't done so already. */
3326 if (contents == NULL)
3328 /* Get cached copy if it exists. */
3329 if (elf_section_data (sec)->this_hdr.contents != NULL)
3330 contents = elf_section_data (sec)->this_hdr.contents;
3331 else
3333 /* Go get them off disk. */
3334 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3335 goto error_return;
3339 /* Read this BFD's symbols if we haven't done so already. */
3340 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
3342 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3343 if (isymbuf == NULL)
3344 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
3345 symtab_hdr->sh_info, 0,
3346 NULL, NULL, NULL);
3347 if (isymbuf == NULL)
3348 goto error_return;
3351 /* Get the value of the symbol referred to by the reloc. */
3352 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
3354 Elf_Internal_Sym *isym;
3355 const char *sym_name;
3356 char *new_name;
3358 /* A local symbol. */
3359 isym = isymbuf + ELF32_R_SYM (irel->r_info);
3360 if (isym->st_shndx == SHN_UNDEF)
3361 sym_sec = bfd_und_section_ptr;
3362 else if (isym->st_shndx == SHN_ABS)
3363 sym_sec = bfd_abs_section_ptr;
3364 else if (isym->st_shndx == SHN_COMMON)
3365 sym_sec = bfd_com_section_ptr;
3366 else
3367 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3369 sym_name = bfd_elf_string_from_elf_section (abfd,
3370 symtab_hdr->sh_link,
3371 isym->st_name);
3373 if ((sym_sec->flags & SEC_MERGE)
3374 && sym_sec->sec_info_type == SEC_INFO_TYPE_MERGE)
3376 symval = isym->st_value;
3378 /* GAS may reduce relocations against symbols in SEC_MERGE
3379 sections to a relocation against the section symbol when
3380 the original addend was zero. When the reloc is against
3381 a section symbol we should include the addend in the
3382 offset passed to _bfd_merged_section_offset, since the
3383 location of interest is the original symbol. On the
3384 other hand, an access to "sym+addend" where "sym" is not
3385 a section symbol should not include the addend; Such an
3386 access is presumed to be an offset from "sym"; The
3387 location of interest is just "sym". */
3388 if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
3389 symval += irel->r_addend;
3391 symval = _bfd_merged_section_offset (abfd, & sym_sec,
3392 elf_section_data (sym_sec)->sec_info,
3393 symval);
3395 if (ELF_ST_TYPE (isym->st_info) != STT_SECTION)
3396 symval += irel->r_addend;
3398 symval += sym_sec->output_section->vma
3399 + sym_sec->output_offset - irel->r_addend;
3401 else
3402 symval = (isym->st_value
3403 + sym_sec->output_section->vma
3404 + sym_sec->output_offset);
3406 /* Tack on an ID so we can uniquely identify this
3407 local symbol in the global hash table. */
3408 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
3409 if (new_name == NULL)
3410 goto error_return;
3411 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
3412 sym_name = new_name;
3414 h = (struct elf32_mn10300_link_hash_entry *)
3415 elf_link_hash_lookup (&hash_table->static_hash_table->root,
3416 sym_name, false, false, false);
3417 free (new_name);
3419 else
3421 unsigned long indx;
3423 /* An external symbol. */
3424 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
3425 h = (struct elf32_mn10300_link_hash_entry *)
3426 (elf_sym_hashes (abfd)[indx]);
3427 BFD_ASSERT (h != NULL);
3428 if (h->root.root.type != bfd_link_hash_defined
3429 && h->root.root.type != bfd_link_hash_defweak)
3430 /* This appears to be a reference to an undefined
3431 symbol. Just ignore it--it will be caught by the
3432 regular reloc processing. */
3433 continue;
3435 /* Check for a reference to a discarded symbol and ignore it. */
3436 if (h->root.root.u.def.section->output_section == NULL)
3437 continue;
3439 sym_sec = h->root.root.u.def.section->output_section;
3441 symval = (h->root.root.u.def.value
3442 + h->root.root.u.def.section->output_section->vma
3443 + h->root.root.u.def.section->output_offset);
3446 /* For simplicity of coding, we are going to modify the section
3447 contents, the section relocs, and the BFD symbol table. We
3448 must tell the rest of the code not to free up this
3449 information. It would be possible to instead create a table
3450 of changes which have to be made, as is done in coff-mips.c;
3451 that would be more work, but would require less memory when
3452 the linker is run. */
3454 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
3455 branch/call, also deal with "call" -> "calls" conversions and
3456 insertion of prologue data into "call" instructions. */
3457 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
3458 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
3460 bfd_vma value = symval;
3462 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
3463 && h != NULL
3464 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
3465 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
3466 && h->root.plt.offset != (bfd_vma) -1)
3468 asection * splt;
3470 splt = hash_table->root.splt;
3471 value = ((splt->output_section->vma
3472 + splt->output_offset
3473 + h->root.plt.offset)
3474 - (sec->output_section->vma
3475 + sec->output_offset
3476 + irel->r_offset));
3479 /* If we've got a "call" instruction that needs to be turned
3480 into a "calls" instruction, do so now. It saves a byte. */
3481 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
3483 unsigned char code;
3485 /* Get the opcode. */
3486 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3488 /* Make sure we're working with a "call" instruction! */
3489 if (code == 0xdd)
3491 /* Note that we've changed the relocs, section contents,
3492 etc. */
3493 elf_section_data (sec)->relocs = internal_relocs;
3494 elf_section_data (sec)->this_hdr.contents = contents;
3495 symtab_hdr->contents = (unsigned char *) isymbuf;
3497 /* Fix the opcode. */
3498 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
3499 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
3501 /* Fix irel->r_offset and irel->r_addend. */
3502 irel->r_offset += 1;
3503 irel->r_addend += 1;
3505 /* Delete one byte of data. */
3506 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3507 irel->r_offset + 3, 1))
3508 goto error_return;
3510 /* That will change things, so, we should relax again.
3511 Note that this is not required, and it may be slow. */
3512 *again = true;
3515 else if (h)
3517 /* We've got a "call" instruction which needs some data
3518 from target function filled in. */
3519 unsigned char code;
3521 /* Get the opcode. */
3522 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3524 /* Insert data from the target function into the "call"
3525 instruction if needed. */
3526 if (code == 0xdd)
3528 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
3529 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
3530 contents + irel->r_offset + 5);
3534 /* Deal with pc-relative gunk. */
3535 value -= (sec->output_section->vma + sec->output_offset);
3536 value -= irel->r_offset;
3537 value += irel->r_addend;
3539 /* See if the value will fit in 16 bits, note the high value is
3540 0x7fff + 2 as the target will be two bytes closer if we are
3541 able to relax, if it's in the same section. */
3542 if (sec->output_section == sym_sec->output_section)
3543 jump_offset = 0x8001;
3544 else
3545 jump_offset = 0x7fff;
3547 /* Account for jumps across alignment boundaries using
3548 align_gap_adjustment. */
3549 if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment
3550 && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment))
3552 unsigned char code;
3554 /* Get the opcode. */
3555 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3557 if (code != 0xdc && code != 0xdd && code != 0xff)
3558 continue;
3560 /* Note that we've changed the relocs, section contents, etc. */
3561 elf_section_data (sec)->relocs = internal_relocs;
3562 elf_section_data (sec)->this_hdr.contents = contents;
3563 symtab_hdr->contents = (unsigned char *) isymbuf;
3565 /* Fix the opcode. */
3566 if (code == 0xdc)
3567 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
3568 else if (code == 0xdd)
3569 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
3570 else if (code == 0xff)
3571 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3573 /* Fix the relocation's type. */
3574 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3575 (ELF32_R_TYPE (irel->r_info)
3576 == (int) R_MN10300_PLT32)
3577 ? R_MN10300_PLT16 :
3578 R_MN10300_PCREL16);
3580 /* Delete two bytes of data. */
3581 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3582 irel->r_offset + 1, 2))
3583 goto error_return;
3585 /* That will change things, so, we should relax again.
3586 Note that this is not required, and it may be slow. */
3587 *again = true;
3591 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
3592 branch. */
3593 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
3595 bfd_vma value = symval;
3597 /* If we've got a "call" instruction that needs to be turned
3598 into a "calls" instruction, do so now. It saves a byte. */
3599 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
3601 unsigned char code;
3603 /* Get the opcode. */
3604 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3606 /* Make sure we're working with a "call" instruction! */
3607 if (code == 0xcd)
3609 /* Note that we've changed the relocs, section contents,
3610 etc. */
3611 elf_section_data (sec)->relocs = internal_relocs;
3612 elf_section_data (sec)->this_hdr.contents = contents;
3613 symtab_hdr->contents = (unsigned char *) isymbuf;
3615 /* Fix the opcode. */
3616 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
3617 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
3619 /* Fix irel->r_offset and irel->r_addend. */
3620 irel->r_offset += 1;
3621 irel->r_addend += 1;
3623 /* Delete one byte of data. */
3624 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3625 irel->r_offset + 1, 1))
3626 goto error_return;
3628 /* That will change things, so, we should relax again.
3629 Note that this is not required, and it may be slow. */
3630 *again = true;
3633 else if (h)
3635 unsigned char code;
3637 /* Get the opcode. */
3638 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3640 /* Insert data from the target function into the "call"
3641 instruction if needed. */
3642 if (code == 0xcd)
3644 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
3645 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
3646 contents + irel->r_offset + 3);
3650 /* Deal with pc-relative gunk. */
3651 value -= (sec->output_section->vma + sec->output_offset);
3652 value -= irel->r_offset;
3653 value += irel->r_addend;
3655 /* See if the value will fit in 8 bits, note the high value is
3656 0x7f + 1 as the target will be one bytes closer if we are
3657 able to relax. */
3658 if ((long) value < 0x80 && (long) value > -0x80)
3660 unsigned char code;
3662 /* Get the opcode. */
3663 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3665 if (code != 0xcc)
3666 continue;
3668 /* Note that we've changed the relocs, section contents, etc. */
3669 elf_section_data (sec)->relocs = internal_relocs;
3670 elf_section_data (sec)->this_hdr.contents = contents;
3671 symtab_hdr->contents = (unsigned char *) isymbuf;
3673 /* Fix the opcode. */
3674 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
3676 /* Fix the relocation's type. */
3677 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3678 R_MN10300_PCREL8);
3680 /* Delete one byte of data. */
3681 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3682 irel->r_offset + 1, 1))
3683 goto error_return;
3685 /* That will change things, so, we should relax again.
3686 Note that this is not required, and it may be slow. */
3687 *again = true;
3691 /* Try to eliminate an unconditional 8 bit pc-relative branch
3692 which immediately follows a conditional 8 bit pc-relative
3693 branch around the unconditional branch.
3695 original: new:
3696 bCC lab1 bCC' lab2
3697 bra lab2
3698 lab1: lab1:
3700 This happens when the bCC can't reach lab2 at assembly time,
3701 but due to other relaxations it can reach at link time. */
3702 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
3704 Elf_Internal_Rela *nrel;
3705 unsigned char code;
3707 /* Do nothing if this reloc is the last byte in the section. */
3708 if (irel->r_offset == sec->size)
3709 continue;
3711 /* See if the next instruction is an unconditional pc-relative
3712 branch, more often than not this test will fail, so we
3713 test it first to speed things up. */
3714 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
3715 if (code != 0xca)
3716 continue;
3718 /* Also make sure the next relocation applies to the next
3719 instruction and that it's a pc-relative 8 bit branch. */
3720 nrel = irel + 1;
3721 if (nrel == irelend
3722 || irel->r_offset + 2 != nrel->r_offset
3723 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
3724 continue;
3726 /* Make sure our destination immediately follows the
3727 unconditional branch. */
3728 if (symval != (sec->output_section->vma + sec->output_offset
3729 + irel->r_offset + 3))
3730 continue;
3732 /* Now make sure we are a conditional branch. This may not
3733 be necessary, but why take the chance.
3735 Note these checks assume that R_MN10300_PCREL8 relocs
3736 only occur on bCC and bCCx insns. If they occured
3737 elsewhere, we'd need to know the start of this insn
3738 for this check to be accurate. */
3739 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3740 if (code != 0xc0 && code != 0xc1 && code != 0xc2
3741 && code != 0xc3 && code != 0xc4 && code != 0xc5
3742 && code != 0xc6 && code != 0xc7 && code != 0xc8
3743 && code != 0xc9 && code != 0xe8 && code != 0xe9
3744 && code != 0xea && code != 0xeb)
3745 continue;
3747 /* We also have to be sure there is no symbol/label
3748 at the unconditional branch. */
3749 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
3750 irel->r_offset + 1))
3751 continue;
3753 /* Note that we've changed the relocs, section contents, etc. */
3754 elf_section_data (sec)->relocs = internal_relocs;
3755 elf_section_data (sec)->this_hdr.contents = contents;
3756 symtab_hdr->contents = (unsigned char *) isymbuf;
3758 /* Reverse the condition of the first branch. */
3759 switch (code)
3761 case 0xc8:
3762 code = 0xc9;
3763 break;
3764 case 0xc9:
3765 code = 0xc8;
3766 break;
3767 case 0xc0:
3768 code = 0xc2;
3769 break;
3770 case 0xc2:
3771 code = 0xc0;
3772 break;
3773 case 0xc3:
3774 code = 0xc1;
3775 break;
3776 case 0xc1:
3777 code = 0xc3;
3778 break;
3779 case 0xc4:
3780 code = 0xc6;
3781 break;
3782 case 0xc6:
3783 code = 0xc4;
3784 break;
3785 case 0xc7:
3786 code = 0xc5;
3787 break;
3788 case 0xc5:
3789 code = 0xc7;
3790 break;
3791 case 0xe8:
3792 code = 0xe9;
3793 break;
3794 case 0x9d:
3795 code = 0xe8;
3796 break;
3797 case 0xea:
3798 code = 0xeb;
3799 break;
3800 case 0xeb:
3801 code = 0xea;
3802 break;
3804 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3806 /* Set the reloc type and symbol for the first branch
3807 from the second branch. */
3808 irel->r_info = nrel->r_info;
3810 /* Make the reloc for the second branch a null reloc. */
3811 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
3812 R_MN10300_NONE);
3814 /* Delete two bytes of data. */
3815 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3816 irel->r_offset + 1, 2))
3817 goto error_return;
3819 /* That will change things, so, we should relax again.
3820 Note that this is not required, and it may be slow. */
3821 *again = true;
3824 /* Try to turn a 24 immediate, displacement or absolute address
3825 into a 8 immediate, displacement or absolute address. */
3826 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
3828 bfd_vma value = symval;
3829 value += irel->r_addend;
3831 /* See if the value will fit in 8 bits. */
3832 if ((long) value < 0x7f && (long) value > -0x80)
3834 unsigned char code;
3836 /* AM33 insns which have 24 operands are 6 bytes long and
3837 will have 0xfd as the first byte. */
3839 /* Get the first opcode. */
3840 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
3842 if (code == 0xfd)
3844 /* Get the second opcode. */
3845 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3847 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3848 equivalent instructions exists. */
3849 if (code != 0x6b && code != 0x7b
3850 && code != 0x8b && code != 0x9b
3851 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3852 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3853 || (code & 0x0f) == 0x0e))
3855 /* Not safe if the high bit is on as relaxing may
3856 move the value out of high mem and thus not fit
3857 in a signed 8bit value. This is currently over
3858 conservative. */
3859 if ((value & 0x80) == 0)
3861 /* Note that we've changed the relocation contents,
3862 etc. */
3863 elf_section_data (sec)->relocs = internal_relocs;
3864 elf_section_data (sec)->this_hdr.contents = contents;
3865 symtab_hdr->contents = (unsigned char *) isymbuf;
3867 /* Fix the opcode. */
3868 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
3869 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3871 /* Fix the relocation's type. */
3872 irel->r_info =
3873 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3874 R_MN10300_8);
3876 /* Delete two bytes of data. */
3877 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3878 irel->r_offset + 1, 2))
3879 goto error_return;
3881 /* That will change things, so, we should relax
3882 again. Note that this is not required, and it
3883 may be slow. */
3884 *again = true;
3885 break;
3892 /* Try to turn a 32bit immediate, displacement or absolute address
3893 into a 16bit immediate, displacement or absolute address. */
3894 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
3895 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
3896 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
3898 bfd_vma value = symval;
3900 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
3902 asection * sgot;
3904 sgot = hash_table->root.sgot;
3905 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
3907 value = sgot->output_offset;
3909 if (h)
3910 value += h->root.got.offset;
3911 else
3912 value += (elf_local_got_offsets
3913 (abfd)[ELF32_R_SYM (irel->r_info)]);
3915 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
3916 value -= sgot->output_section->vma;
3917 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
3918 value = (sgot->output_section->vma
3919 - (sec->output_section->vma
3920 + sec->output_offset
3921 + irel->r_offset));
3922 else
3923 abort ();
3926 value += irel->r_addend;
3928 /* See if the value will fit in 24 bits.
3929 We allow any 16bit match here. We prune those we can't
3930 handle below. */
3931 if (value + 0x800000 < 0x1000000 && irel->r_offset >= 3)
3933 unsigned char code;
3935 /* AM33 insns which have 32bit operands are 7 bytes long and
3936 will have 0xfe as the first byte. */
3938 /* Get the first opcode. */
3939 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
3941 if (code == 0xfe)
3943 /* Get the second opcode. */
3944 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3946 /* All the am33 32 -> 24 relaxing possibilities. */
3947 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3948 equivalent instructions exists. */
3949 if (code != 0x6b && code != 0x7b
3950 && code != 0x8b && code != 0x9b
3951 && (ELF32_R_TYPE (irel->r_info)
3952 != (int) R_MN10300_GOTPC32)
3953 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3954 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3955 || (code & 0x0f) == 0x0e))
3957 /* Not safe if the high bit is on as relaxing may
3958 move the value out of high mem and thus not fit
3959 in a signed 16bit value. This is currently over
3960 conservative. */
3961 if ((value & 0x8000) == 0)
3963 /* Note that we've changed the relocation contents,
3964 etc. */
3965 elf_section_data (sec)->relocs = internal_relocs;
3966 elf_section_data (sec)->this_hdr.contents = contents;
3967 symtab_hdr->contents = (unsigned char *) isymbuf;
3969 /* Fix the opcode. */
3970 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3971 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3973 /* Fix the relocation's type. */
3974 irel->r_info =
3975 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3976 (ELF32_R_TYPE (irel->r_info)
3977 == (int) R_MN10300_GOTOFF32)
3978 ? R_MN10300_GOTOFF24
3979 : (ELF32_R_TYPE (irel->r_info)
3980 == (int) R_MN10300_GOT32)
3981 ? R_MN10300_GOT24 :
3982 R_MN10300_24);
3984 /* Delete one byte of data. */
3985 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3986 irel->r_offset + 3, 1))
3987 goto error_return;
3989 /* That will change things, so, we should relax
3990 again. Note that this is not required, and it
3991 may be slow. */
3992 *again = true;
3993 break;
3999 /* See if the value will fit in 16 bits.
4000 We allow any 16bit match here. We prune those we can't
4001 handle below. */
4002 if (value + 0x8000 < 0x10000 && irel->r_offset >= 2)
4004 unsigned char code;
4006 /* Most insns which have 32bit operands are 6 bytes long;
4007 exceptions are pcrel insns and bit insns.
4009 We handle pcrel insns above. We don't bother trying
4010 to handle the bit insns here.
4012 The first byte of the remaining insns will be 0xfc. */
4014 /* Get the first opcode. */
4015 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
4017 if (code != 0xfc)
4018 continue;
4020 /* Get the second opcode. */
4021 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
4023 if ((code & 0xf0) < 0x80)
4024 switch (code & 0xf0)
4026 /* mov (d32,am),dn -> mov (d32,am),dn
4027 mov dm,(d32,am) -> mov dn,(d32,am)
4028 mov (d32,am),an -> mov (d32,am),an
4029 mov dm,(d32,am) -> mov dn,(d32,am)
4030 movbu (d32,am),dn -> movbu (d32,am),dn
4031 movbu dm,(d32,am) -> movbu dn,(d32,am)
4032 movhu (d32,am),dn -> movhu (d32,am),dn
4033 movhu dm,(d32,am) -> movhu dn,(d32,am) */
4034 case 0x00:
4035 case 0x10:
4036 case 0x20:
4037 case 0x30:
4038 case 0x40:
4039 case 0x50:
4040 case 0x60:
4041 case 0x70:
4042 /* Not safe if the high bit is on as relaxing may
4043 move the value out of high mem and thus not fit
4044 in a signed 16bit value. */
4045 if (code == 0xcc
4046 && (value & 0x8000))
4047 continue;
4049 /* Note that we've changed the relocation contents, etc. */
4050 elf_section_data (sec)->relocs = internal_relocs;
4051 elf_section_data (sec)->this_hdr.contents = contents;
4052 symtab_hdr->contents = (unsigned char *) isymbuf;
4054 /* Fix the opcode. */
4055 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
4056 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
4058 /* Fix the relocation's type. */
4059 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4060 (ELF32_R_TYPE (irel->r_info)
4061 == (int) R_MN10300_GOTOFF32)
4062 ? R_MN10300_GOTOFF16
4063 : (ELF32_R_TYPE (irel->r_info)
4064 == (int) R_MN10300_GOT32)
4065 ? R_MN10300_GOT16
4066 : (ELF32_R_TYPE (irel->r_info)
4067 == (int) R_MN10300_GOTPC32)
4068 ? R_MN10300_GOTPC16 :
4069 R_MN10300_16);
4071 /* Delete two bytes of data. */
4072 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
4073 irel->r_offset + 2, 2))
4074 goto error_return;
4076 /* That will change things, so, we should relax again.
4077 Note that this is not required, and it may be slow. */
4078 *again = true;
4079 break;
4081 else if ((code & 0xf0) == 0x80
4082 || (code & 0xf0) == 0x90)
4083 switch (code & 0xf3)
4085 /* mov dn,(abs32) -> mov dn,(abs16)
4086 movbu dn,(abs32) -> movbu dn,(abs16)
4087 movhu dn,(abs32) -> movhu dn,(abs16) */
4088 case 0x81:
4089 case 0x82:
4090 case 0x83:
4091 /* Note that we've changed the relocation contents, etc. */
4092 elf_section_data (sec)->relocs = internal_relocs;
4093 elf_section_data (sec)->this_hdr.contents = contents;
4094 symtab_hdr->contents = (unsigned char *) isymbuf;
4096 if ((code & 0xf3) == 0x81)
4097 code = 0x01 + (code & 0x0c);
4098 else if ((code & 0xf3) == 0x82)
4099 code = 0x02 + (code & 0x0c);
4100 else if ((code & 0xf3) == 0x83)
4101 code = 0x03 + (code & 0x0c);
4102 else
4103 abort ();
4105 /* Fix the opcode. */
4106 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
4108 /* Fix the relocation's type. */
4109 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4110 (ELF32_R_TYPE (irel->r_info)
4111 == (int) R_MN10300_GOTOFF32)
4112 ? R_MN10300_GOTOFF16
4113 : (ELF32_R_TYPE (irel->r_info)
4114 == (int) R_MN10300_GOT32)
4115 ? R_MN10300_GOT16
4116 : (ELF32_R_TYPE (irel->r_info)
4117 == (int) R_MN10300_GOTPC32)
4118 ? R_MN10300_GOTPC16 :
4119 R_MN10300_16);
4121 /* The opcode got shorter too, so we have to fix the
4122 addend and offset too! */
4123 irel->r_offset -= 1;
4125 /* Delete three bytes of data. */
4126 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
4127 irel->r_offset + 1, 3))
4128 goto error_return;
4130 /* That will change things, so, we should relax again.
4131 Note that this is not required, and it may be slow. */
4132 *again = true;
4133 break;
4135 /* mov am,(abs32) -> mov am,(abs16)
4136 mov am,(d32,sp) -> mov am,(d16,sp)
4137 mov dm,(d32,sp) -> mov dm,(d32,sp)
4138 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
4139 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
4140 case 0x80:
4141 case 0x90:
4142 case 0x91:
4143 case 0x92:
4144 case 0x93:
4145 /* sp-based offsets are zero-extended. */
4146 if (code >= 0x90 && code <= 0x93
4147 && (long) value < 0)
4148 continue;
4150 /* Note that we've changed the relocation contents, etc. */
4151 elf_section_data (sec)->relocs = internal_relocs;
4152 elf_section_data (sec)->this_hdr.contents = contents;
4153 symtab_hdr->contents = (unsigned char *) isymbuf;
4155 /* Fix the opcode. */
4156 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
4157 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
4159 /* Fix the relocation's type. */
4160 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4161 (ELF32_R_TYPE (irel->r_info)
4162 == (int) R_MN10300_GOTOFF32)
4163 ? R_MN10300_GOTOFF16
4164 : (ELF32_R_TYPE (irel->r_info)
4165 == (int) R_MN10300_GOT32)
4166 ? R_MN10300_GOT16
4167 : (ELF32_R_TYPE (irel->r_info)
4168 == (int) R_MN10300_GOTPC32)
4169 ? R_MN10300_GOTPC16 :
4170 R_MN10300_16);
4172 /* Delete two bytes of data. */
4173 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
4174 irel->r_offset + 2, 2))
4175 goto error_return;
4177 /* That will change things, so, we should relax again.
4178 Note that this is not required, and it may be slow. */
4179 *again = true;
4180 break;
4182 else if ((code & 0xf0) < 0xf0)
4183 switch (code & 0xfc)
4185 /* mov imm32,dn -> mov imm16,dn
4186 mov imm32,an -> mov imm16,an
4187 mov (abs32),dn -> mov (abs16),dn
4188 movbu (abs32),dn -> movbu (abs16),dn
4189 movhu (abs32),dn -> movhu (abs16),dn */
4190 case 0xcc:
4191 case 0xdc:
4192 case 0xa4:
4193 case 0xa8:
4194 case 0xac:
4195 /* Not safe if the high bit is on as relaxing may
4196 move the value out of high mem and thus not fit
4197 in a signed 16bit value. */
4198 if (code == 0xcc
4199 && (value & 0x8000))
4200 continue;
4202 /* "mov imm16, an" zero-extends the immediate. */
4203 if ((code & 0xfc) == 0xdc
4204 && (long) value < 0)
4205 continue;
4207 /* Note that we've changed the relocation contents, etc. */
4208 elf_section_data (sec)->relocs = internal_relocs;
4209 elf_section_data (sec)->this_hdr.contents = contents;
4210 symtab_hdr->contents = (unsigned char *) isymbuf;
4212 if ((code & 0xfc) == 0xcc)
4213 code = 0x2c + (code & 0x03);
4214 else if ((code & 0xfc) == 0xdc)
4215 code = 0x24 + (code & 0x03);
4216 else if ((code & 0xfc) == 0xa4)
4217 code = 0x30 + (code & 0x03);
4218 else if ((code & 0xfc) == 0xa8)
4219 code = 0x34 + (code & 0x03);
4220 else if ((code & 0xfc) == 0xac)
4221 code = 0x38 + (code & 0x03);
4222 else
4223 abort ();
4225 /* Fix the opcode. */
4226 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
4228 /* Fix the relocation's type. */
4229 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4230 (ELF32_R_TYPE (irel->r_info)
4231 == (int) R_MN10300_GOTOFF32)
4232 ? R_MN10300_GOTOFF16
4233 : (ELF32_R_TYPE (irel->r_info)
4234 == (int) R_MN10300_GOT32)
4235 ? R_MN10300_GOT16
4236 : (ELF32_R_TYPE (irel->r_info)
4237 == (int) R_MN10300_GOTPC32)
4238 ? R_MN10300_GOTPC16 :
4239 R_MN10300_16);
4241 /* The opcode got shorter too, so we have to fix the
4242 addend and offset too! */
4243 irel->r_offset -= 1;
4245 /* Delete three bytes of data. */
4246 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
4247 irel->r_offset + 1, 3))
4248 goto error_return;
4250 /* That will change things, so, we should relax again.
4251 Note that this is not required, and it may be slow. */
4252 *again = true;
4253 break;
4255 /* mov (abs32),an -> mov (abs16),an
4256 mov (d32,sp),an -> mov (d16,sp),an
4257 mov (d32,sp),dn -> mov (d16,sp),dn
4258 movbu (d32,sp),dn -> movbu (d16,sp),dn
4259 movhu (d32,sp),dn -> movhu (d16,sp),dn
4260 add imm32,dn -> add imm16,dn
4261 cmp imm32,dn -> cmp imm16,dn
4262 add imm32,an -> add imm16,an
4263 cmp imm32,an -> cmp imm16,an
4264 and imm32,dn -> and imm16,dn
4265 or imm32,dn -> or imm16,dn
4266 xor imm32,dn -> xor imm16,dn
4267 btst imm32,dn -> btst imm16,dn */
4269 case 0xa0:
4270 case 0xb0:
4271 case 0xb1:
4272 case 0xb2:
4273 case 0xb3:
4274 case 0xc0:
4275 case 0xc8:
4277 case 0xd0:
4278 case 0xd8:
4279 case 0xe0:
4280 case 0xe1:
4281 case 0xe2:
4282 case 0xe3:
4283 /* cmp imm16, an zero-extends the immediate. */
4284 if (code == 0xdc
4285 && (long) value < 0)
4286 continue;
4288 /* So do sp-based offsets. */
4289 if (code >= 0xb0 && code <= 0xb3
4290 && (long) value < 0)
4291 continue;
4293 /* Note that we've changed the relocation contents, etc. */
4294 elf_section_data (sec)->relocs = internal_relocs;
4295 elf_section_data (sec)->this_hdr.contents = contents;
4296 symtab_hdr->contents = (unsigned char *) isymbuf;
4298 /* Fix the opcode. */
4299 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
4300 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
4302 /* Fix the relocation's type. */
4303 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4304 (ELF32_R_TYPE (irel->r_info)
4305 == (int) R_MN10300_GOTOFF32)
4306 ? R_MN10300_GOTOFF16
4307 : (ELF32_R_TYPE (irel->r_info)
4308 == (int) R_MN10300_GOT32)
4309 ? R_MN10300_GOT16
4310 : (ELF32_R_TYPE (irel->r_info)
4311 == (int) R_MN10300_GOTPC32)
4312 ? R_MN10300_GOTPC16 :
4313 R_MN10300_16);
4315 /* Delete two bytes of data. */
4316 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
4317 irel->r_offset + 2, 2))
4318 goto error_return;
4320 /* That will change things, so, we should relax again.
4321 Note that this is not required, and it may be slow. */
4322 *again = true;
4323 break;
4325 else if (code == 0xfe)
4327 /* add imm32,sp -> add imm16,sp */
4329 /* Note that we've changed the relocation contents, etc. */
4330 elf_section_data (sec)->relocs = internal_relocs;
4331 elf_section_data (sec)->this_hdr.contents = contents;
4332 symtab_hdr->contents = (unsigned char *) isymbuf;
4334 /* Fix the opcode. */
4335 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
4336 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
4338 /* Fix the relocation's type. */
4339 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4340 (ELF32_R_TYPE (irel->r_info)
4341 == (int) R_MN10300_GOT32)
4342 ? R_MN10300_GOT16
4343 : (ELF32_R_TYPE (irel->r_info)
4344 == (int) R_MN10300_GOTOFF32)
4345 ? R_MN10300_GOTOFF16
4346 : (ELF32_R_TYPE (irel->r_info)
4347 == (int) R_MN10300_GOTPC32)
4348 ? R_MN10300_GOTPC16 :
4349 R_MN10300_16);
4351 /* Delete two bytes of data. */
4352 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
4353 irel->r_offset + 2, 2))
4354 goto error_return;
4356 /* That will change things, so, we should relax again.
4357 Note that this is not required, and it may be slow. */
4358 *again = true;
4359 break;
4365 if (isymbuf != NULL
4366 && symtab_hdr->contents != (unsigned char *) isymbuf)
4368 if (! link_info->keep_memory)
4369 free (isymbuf);
4370 else
4372 /* Cache the symbols for elf_link_input_bfd. */
4373 symtab_hdr->contents = (unsigned char *) isymbuf;
4377 if (contents != NULL
4378 && elf_section_data (sec)->this_hdr.contents != contents)
4380 if (! link_info->keep_memory)
4381 free (contents);
4382 else
4384 /* Cache the section contents for elf_link_input_bfd. */
4385 elf_section_data (sec)->this_hdr.contents = contents;
4389 if (elf_section_data (sec)->relocs != internal_relocs)
4390 free (internal_relocs);
4392 return true;
4394 error_return:
4395 if (symtab_hdr->contents != (unsigned char *) isymbuf)
4396 free (isymbuf);
4397 if (elf_section_data (section)->this_hdr.contents != contents)
4398 free (contents);
4399 if (elf_section_data (section)->relocs != internal_relocs)
4400 free (internal_relocs);
4402 return false;
4405 /* This is a version of bfd_generic_get_relocated_section_contents
4406 which uses mn10300_elf_relocate_section. */
4408 static bfd_byte *
4409 mn10300_elf_get_relocated_section_contents (bfd *output_bfd,
4410 struct bfd_link_info *link_info,
4411 struct bfd_link_order *link_order,
4412 bfd_byte *data,
4413 bool relocatable,
4414 asymbol **symbols)
4416 Elf_Internal_Shdr *symtab_hdr;
4417 asection *input_section = link_order->u.indirect.section;
4418 bfd *input_bfd = input_section->owner;
4419 asection **sections = NULL;
4420 Elf_Internal_Rela *internal_relocs = NULL;
4421 Elf_Internal_Sym *isymbuf = NULL;
4423 /* We only need to handle the case of relaxing, or of having a
4424 particular set of section contents, specially. */
4425 if (relocatable
4426 || elf_section_data (input_section)->this_hdr.contents == NULL)
4427 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
4428 link_order, data,
4429 relocatable,
4430 symbols);
4432 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4434 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
4435 (size_t) input_section->size);
4437 if ((input_section->flags & SEC_RELOC) != 0
4438 && input_section->reloc_count > 0)
4440 asection **secpp;
4441 Elf_Internal_Sym *isym, *isymend;
4442 bfd_size_type amt;
4444 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
4445 NULL, NULL, false);
4446 if (internal_relocs == NULL)
4447 goto error_return;
4449 if (symtab_hdr->sh_info != 0)
4451 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4452 if (isymbuf == NULL)
4453 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4454 symtab_hdr->sh_info, 0,
4455 NULL, NULL, NULL);
4456 if (isymbuf == NULL)
4457 goto error_return;
4460 amt = symtab_hdr->sh_info;
4461 amt *= sizeof (asection *);
4462 sections = bfd_malloc (amt);
4463 if (sections == NULL && amt != 0)
4464 goto error_return;
4466 isymend = isymbuf + symtab_hdr->sh_info;
4467 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
4469 asection *isec;
4471 if (isym->st_shndx == SHN_UNDEF)
4472 isec = bfd_und_section_ptr;
4473 else if (isym->st_shndx == SHN_ABS)
4474 isec = bfd_abs_section_ptr;
4475 else if (isym->st_shndx == SHN_COMMON)
4476 isec = bfd_com_section_ptr;
4477 else
4478 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
4480 *secpp = isec;
4483 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
4484 input_section, data, internal_relocs,
4485 isymbuf, sections))
4486 goto error_return;
4488 free (sections);
4489 if (symtab_hdr->contents != (unsigned char *) isymbuf)
4490 free (isymbuf);
4491 if (internal_relocs != elf_section_data (input_section)->relocs)
4492 free (internal_relocs);
4495 return data;
4497 error_return:
4498 free (sections);
4499 if (symtab_hdr->contents != (unsigned char *) isymbuf)
4500 free (isymbuf);
4501 if (internal_relocs != elf_section_data (input_section)->relocs)
4502 free (internal_relocs);
4503 return NULL;
4506 /* Assorted hash table functions. */
4508 /* Initialize an entry in the link hash table. */
4510 /* Create an entry in an MN10300 ELF linker hash table. */
4512 static struct bfd_hash_entry *
4513 elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry,
4514 struct bfd_hash_table *table,
4515 const char *string)
4517 struct elf32_mn10300_link_hash_entry *ret =
4518 (struct elf32_mn10300_link_hash_entry *) entry;
4520 /* Allocate the structure if it has not already been allocated by a
4521 subclass. */
4522 if (ret == NULL)
4523 ret = (struct elf32_mn10300_link_hash_entry *)
4524 bfd_hash_allocate (table, sizeof (* ret));
4525 if (ret == NULL)
4526 return (struct bfd_hash_entry *) ret;
4528 /* Call the allocation method of the superclass. */
4529 ret = (struct elf32_mn10300_link_hash_entry *)
4530 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
4531 table, string);
4532 if (ret != NULL)
4534 ret->direct_calls = 0;
4535 ret->stack_size = 0;
4536 ret->movm_args = 0;
4537 ret->movm_stack_size = 0;
4538 ret->flags = 0;
4539 ret->value = 0;
4540 ret->tls_type = GOT_UNKNOWN;
4543 return (struct bfd_hash_entry *) ret;
4546 static void
4547 _bfd_mn10300_copy_indirect_symbol (struct bfd_link_info * info,
4548 struct elf_link_hash_entry * dir,
4549 struct elf_link_hash_entry * ind)
4551 struct elf32_mn10300_link_hash_entry * edir;
4552 struct elf32_mn10300_link_hash_entry * eind;
4554 edir = elf_mn10300_hash_entry (dir);
4555 eind = elf_mn10300_hash_entry (ind);
4557 if (ind->root.type == bfd_link_hash_indirect
4558 && dir->got.refcount <= 0)
4560 edir->tls_type = eind->tls_type;
4561 eind->tls_type = GOT_UNKNOWN;
4563 edir->direct_calls = eind->direct_calls;
4564 edir->stack_size = eind->stack_size;
4565 edir->movm_args = eind->movm_args;
4566 edir->movm_stack_size = eind->movm_stack_size;
4567 edir->flags = eind->flags;
4569 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
4572 /* Destroy an mn10300 ELF linker hash table. */
4574 static void
4575 elf32_mn10300_link_hash_table_free (bfd *obfd)
4577 struct elf32_mn10300_link_hash_table *ret
4578 = (struct elf32_mn10300_link_hash_table *) obfd->link.hash;
4580 obfd->link.hash = &ret->static_hash_table->root.root;
4581 _bfd_elf_link_hash_table_free (obfd);
4582 obfd->is_linker_output = true;
4583 obfd->link.hash = &ret->root.root;
4584 _bfd_elf_link_hash_table_free (obfd);
4587 /* Create an mn10300 ELF linker hash table. */
4589 static struct bfd_link_hash_table *
4590 elf32_mn10300_link_hash_table_create (bfd *abfd)
4592 struct elf32_mn10300_link_hash_table *ret;
4593 size_t amt = sizeof (* ret);
4595 ret = bfd_zmalloc (amt);
4596 if (ret == NULL)
4597 return NULL;
4599 amt = sizeof (struct elf_link_hash_table);
4600 ret->static_hash_table = bfd_zmalloc (amt);
4601 if (ret->static_hash_table == NULL)
4603 free (ret);
4604 return NULL;
4607 if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
4608 elf32_mn10300_link_hash_newfunc,
4609 sizeof (struct elf32_mn10300_link_hash_entry),
4610 MN10300_ELF_DATA))
4612 free (ret->static_hash_table);
4613 free (ret);
4614 return NULL;
4617 abfd->is_linker_output = false;
4618 abfd->link.hash = NULL;
4619 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
4620 elf32_mn10300_link_hash_newfunc,
4621 sizeof (struct elf32_mn10300_link_hash_entry),
4622 MN10300_ELF_DATA))
4624 abfd->is_linker_output = true;
4625 abfd->link.hash = &ret->static_hash_table->root.root;
4626 _bfd_elf_link_hash_table_free (abfd);
4627 free (ret);
4628 return NULL;
4630 ret->root.root.hash_table_free = elf32_mn10300_link_hash_table_free;
4632 ret->tls_ldm_got.offset = -1;
4634 return & ret->root.root;
4637 static unsigned long
4638 elf_mn10300_mach (flagword flags)
4640 switch (flags & EF_MN10300_MACH)
4642 case E_MN10300_MACH_MN10300:
4643 default:
4644 return bfd_mach_mn10300;
4646 case E_MN10300_MACH_AM33:
4647 return bfd_mach_am33;
4649 case E_MN10300_MACH_AM33_2:
4650 return bfd_mach_am33_2;
4654 /* The final processing done just before writing out a MN10300 ELF object
4655 file. This gets the MN10300 architecture right based on the machine
4656 number. */
4658 static bool
4659 _bfd_mn10300_elf_final_write_processing (bfd *abfd)
4661 unsigned long val;
4663 switch (bfd_get_mach (abfd))
4665 default:
4666 case bfd_mach_mn10300:
4667 val = E_MN10300_MACH_MN10300;
4668 break;
4670 case bfd_mach_am33:
4671 val = E_MN10300_MACH_AM33;
4672 break;
4674 case bfd_mach_am33_2:
4675 val = E_MN10300_MACH_AM33_2;
4676 break;
4679 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
4680 elf_elfheader (abfd)->e_flags |= val;
4681 return _bfd_elf_final_write_processing (abfd);
4684 static bool
4685 _bfd_mn10300_elf_object_p (bfd *abfd)
4687 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
4688 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
4689 return true;
4692 /* Merge backend specific data from an object file to the output
4693 object file when linking. */
4695 static bool
4696 _bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4698 bfd *obfd = info->output_bfd;
4700 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4701 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4702 return true;
4704 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4705 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
4707 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
4708 bfd_get_mach (ibfd)))
4709 return false;
4712 return true;
4715 #define PLT0_ENTRY_SIZE 15
4716 #define PLT_ENTRY_SIZE 20
4717 #define PIC_PLT_ENTRY_SIZE 24
4719 static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
4721 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
4722 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
4723 0xf0, 0xf4, /* jmp (a0) */
4726 static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
4728 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
4729 0xf0, 0xf4, /* jmp (a0) */
4730 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4731 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
4734 static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
4736 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
4737 0xf0, 0xf4, /* jmp (a0) */
4738 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4739 0xf8, 0x22, 8, /* mov (8,a2),a0 */
4740 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
4741 0xf0, 0xf4, /* jmp (a0) */
4744 /* Return size of the first PLT entry. */
4745 #define elf_mn10300_sizeof_plt0(info) \
4746 (bfd_link_pic (info) ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4748 /* Return size of a PLT entry. */
4749 #define elf_mn10300_sizeof_plt(info) \
4750 (bfd_link_pic (info) ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4752 /* Return offset of the PLT0 address in an absolute PLT entry. */
4753 #define elf_mn10300_plt_plt0_offset(info) 16
4755 /* Return offset of the linker in PLT0 entry. */
4756 #define elf_mn10300_plt0_linker_offset(info) 2
4758 /* Return offset of the GOT id in PLT0 entry. */
4759 #define elf_mn10300_plt0_gotid_offset(info) 9
4761 /* Return offset of the temporary in PLT entry. */
4762 #define elf_mn10300_plt_temp_offset(info) 8
4764 /* Return offset of the symbol in PLT entry. */
4765 #define elf_mn10300_plt_symbol_offset(info) 2
4767 /* Return offset of the relocation in PLT entry. */
4768 #define elf_mn10300_plt_reloc_offset(info) 11
4770 /* The name of the dynamic interpreter. This is put in the .interp
4771 section. */
4773 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4775 /* Create dynamic sections when linking against a dynamic object. */
4777 static bool
4778 _bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
4780 flagword flags;
4781 asection * s;
4782 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
4783 struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info);
4784 int ptralign = 0;
4786 switch (bed->s->arch_size)
4788 case 32:
4789 ptralign = 2;
4790 break;
4792 case 64:
4793 ptralign = 3;
4794 break;
4796 default:
4797 bfd_set_error (bfd_error_bad_value);
4798 return false;
4801 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4802 .rel[a].bss sections. */
4803 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4804 | SEC_LINKER_CREATED);
4806 s = bfd_make_section_anyway_with_flags (abfd,
4807 (bed->default_use_rela_p
4808 ? ".rela.plt" : ".rel.plt"),
4809 flags | SEC_READONLY);
4810 htab->root.srelplt = s;
4811 if (s == NULL
4812 || !bfd_set_section_alignment (s, ptralign))
4813 return false;
4815 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4816 return false;
4818 if (bed->want_dynbss)
4820 /* The .dynbss section is a place to put symbols which are defined
4821 by dynamic objects, are referenced by regular objects, and are
4822 not functions. We must allocate space for them in the process
4823 image and use a R_*_COPY reloc to tell the dynamic linker to
4824 initialize them at run time. The linker script puts the .dynbss
4825 section into the .bss section of the final image. */
4826 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
4827 SEC_ALLOC | SEC_LINKER_CREATED);
4828 if (s == NULL)
4829 return false;
4831 /* The .rel[a].bss section holds copy relocs. This section is not
4832 normally needed. We need to create it here, though, so that the
4833 linker will map it to an output section. We can't just create it
4834 only if we need it, because we will not know whether we need it
4835 until we have seen all the input files, and the first time the
4836 main linker code calls BFD after examining all the input files
4837 (size_dynamic_sections) the input sections have already been
4838 mapped to the output sections. If the section turns out not to
4839 be needed, we can discard it later. We will never need this
4840 section when generating a shared object, since they do not use
4841 copy relocs. */
4842 if (! bfd_link_pic (info))
4844 s = bfd_make_section_anyway_with_flags (abfd,
4845 (bed->default_use_rela_p
4846 ? ".rela.bss" : ".rel.bss"),
4847 flags | SEC_READONLY);
4848 if (s == NULL
4849 || !bfd_set_section_alignment (s, ptralign))
4850 return false;
4854 return true;
4857 /* Adjust a symbol defined by a dynamic object and referenced by a
4858 regular object. The current definition is in some section of the
4859 dynamic object, but we're not including those sections. We have to
4860 change the definition to something the rest of the link can
4861 understand. */
4863 static bool
4864 _bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info,
4865 struct elf_link_hash_entry * h)
4867 struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info);
4868 bfd * dynobj;
4869 asection * s;
4871 dynobj = htab->root.dynobj;
4873 /* Make sure we know what is going on here. */
4874 BFD_ASSERT (dynobj != NULL
4875 && (h->needs_plt
4876 || h->is_weakalias
4877 || (h->def_dynamic
4878 && h->ref_regular
4879 && !h->def_regular)));
4881 /* If this is a function, put it in the procedure linkage table. We
4882 will fill in the contents of the procedure linkage table later,
4883 when we know the address of the .got section. */
4884 if (h->type == STT_FUNC
4885 || h->needs_plt)
4887 if (! bfd_link_pic (info)
4888 && !h->def_dynamic
4889 && !h->ref_dynamic)
4891 /* This case can occur if we saw a PLT reloc in an input
4892 file, but the symbol was never referred to by a dynamic
4893 object. In such a case, we don't actually need to build
4894 a procedure linkage table, and we can just do a REL32
4895 reloc instead. */
4896 BFD_ASSERT (h->needs_plt);
4897 return true;
4900 /* Make sure this symbol is output as a dynamic symbol. */
4901 if (h->dynindx == -1)
4903 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4904 return false;
4907 s = htab->root.splt;
4908 BFD_ASSERT (s != NULL);
4910 /* If this is the first .plt entry, make room for the special
4911 first entry. */
4912 if (s->size == 0)
4913 s->size += elf_mn10300_sizeof_plt0 (info);
4915 /* If this symbol is not defined in a regular file, and we are
4916 not generating a shared library, then set the symbol to this
4917 location in the .plt. This is required to make function
4918 pointers compare as equal between the normal executable and
4919 the shared library. */
4920 if (! bfd_link_pic (info)
4921 && !h->def_regular)
4923 h->root.u.def.section = s;
4924 h->root.u.def.value = s->size;
4927 h->plt.offset = s->size;
4929 /* Make room for this entry. */
4930 s->size += elf_mn10300_sizeof_plt (info);
4932 /* We also need to make an entry in the .got.plt section, which
4933 will be placed in the .got section by the linker script. */
4934 s = htab->root.sgotplt;
4935 BFD_ASSERT (s != NULL);
4936 s->size += 4;
4938 /* We also need to make an entry in the .rela.plt section. */
4939 s = htab->root.srelplt;
4940 BFD_ASSERT (s != NULL);
4941 s->size += sizeof (Elf32_External_Rela);
4943 return true;
4946 /* If this is a weak symbol, and there is a real definition, the
4947 processor independent code will have arranged for us to see the
4948 real definition first, and we can just use the same value. */
4949 if (h->is_weakalias)
4951 struct elf_link_hash_entry *def = weakdef (h);
4952 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
4953 h->root.u.def.section = def->root.u.def.section;
4954 h->root.u.def.value = def->root.u.def.value;
4955 return true;
4958 /* This is a reference to a symbol defined by a dynamic object which
4959 is not a function. */
4961 /* If we are creating a shared library, we must presume that the
4962 only references to the symbol are via the global offset table.
4963 For such cases we need not do anything here; the relocations will
4964 be handled correctly by relocate_section. */
4965 if (bfd_link_pic (info))
4966 return true;
4968 /* If there are no references to this symbol that do not use the
4969 GOT, we don't need to generate a copy reloc. */
4970 if (!h->non_got_ref)
4971 return true;
4973 /* We must allocate the symbol in our .dynbss section, which will
4974 become part of the .bss section of the executable. There will be
4975 an entry for this symbol in the .dynsym section. The dynamic
4976 object will contain position independent code, so all references
4977 from the dynamic object to this symbol will go through the global
4978 offset table. The dynamic linker will use the .dynsym entry to
4979 determine the address it must put in the global offset table, so
4980 both the dynamic object and the regular object will refer to the
4981 same memory location for the variable. */
4983 s = bfd_get_linker_section (dynobj, ".dynbss");
4984 BFD_ASSERT (s != NULL);
4986 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4987 copy the initial value out of the dynamic object and into the
4988 runtime process image. We need to remember the offset into the
4989 .rela.bss section we are going to use. */
4990 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
4992 asection * srel;
4994 srel = bfd_get_linker_section (dynobj, ".rela.bss");
4995 BFD_ASSERT (srel != NULL);
4996 srel->size += sizeof (Elf32_External_Rela);
4997 h->needs_copy = 1;
5000 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5003 /* Set the sizes of the dynamic sections. */
5005 static bool
5006 _bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd,
5007 struct bfd_link_info * info)
5009 struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info);
5010 bfd * dynobj;
5011 asection * s;
5012 bool relocs;
5014 dynobj = htab->root.dynobj;
5015 BFD_ASSERT (dynobj != NULL);
5017 if (elf_hash_table (info)->dynamic_sections_created)
5019 /* Set the contents of the .interp section to the interpreter. */
5020 if (bfd_link_executable (info) && !info->nointerp)
5022 s = bfd_get_linker_section (dynobj, ".interp");
5023 BFD_ASSERT (s != NULL);
5024 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5025 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5028 else
5030 /* We may have created entries in the .rela.got section.
5031 However, if we are not creating the dynamic sections, we will
5032 not actually use these entries. Reset the size of .rela.got,
5033 which will cause it to get stripped from the output file
5034 below. */
5035 s = htab->root.sgot;
5036 if (s != NULL)
5037 s->size = 0;
5040 if (htab->tls_ldm_got.refcount > 0)
5042 s = htab->root.srelgot;
5043 BFD_ASSERT (s != NULL);
5044 s->size += sizeof (Elf32_External_Rela);
5047 /* The check_relocs and adjust_dynamic_symbol entry points have
5048 determined the sizes of the various dynamic sections. Allocate
5049 memory for them. */
5050 relocs = false;
5051 for (s = dynobj->sections; s != NULL; s = s->next)
5053 const char * name;
5055 if ((s->flags & SEC_LINKER_CREATED) == 0)
5056 continue;
5058 /* It's OK to base decisions on the section name, because none
5059 of the dynobj section names depend upon the input files. */
5060 name = bfd_section_name (s);
5062 if (streq (name, ".plt"))
5064 /* Remember whether there is a PLT. */
5067 else if (startswith (name, ".rela"))
5069 if (s->size != 0)
5071 /* Remember whether there are any reloc sections other
5072 than .rela.plt. */
5073 if (! streq (name, ".rela.plt"))
5074 relocs = true;
5076 /* We use the reloc_count field as a counter if we need
5077 to copy relocs into the output file. */
5078 s->reloc_count = 0;
5081 else if (! startswith (name, ".got")
5082 && ! streq (name, ".dynbss"))
5083 /* It's not one of our sections, so don't allocate space. */
5084 continue;
5086 if (s->size == 0)
5088 /* If we don't need this section, strip it from the
5089 output file. This is mostly to handle .rela.bss and
5090 .rela.plt. We must create both sections in
5091 create_dynamic_sections, because they must be created
5092 before the linker maps input sections to output
5093 sections. The linker does that before
5094 adjust_dynamic_symbol is called, and it is that
5095 function which decides whether anything needs to go
5096 into these sections. */
5097 s->flags |= SEC_EXCLUDE;
5098 continue;
5101 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5102 continue;
5104 /* Allocate memory for the section contents. We use bfd_zalloc
5105 here in case unused entries are not reclaimed before the
5106 section's contents are written out. This should not happen,
5107 but this way if it does, we get a R_MN10300_NONE reloc
5108 instead of garbage. */
5109 s->contents = bfd_zalloc (dynobj, s->size);
5110 if (s->contents == NULL)
5111 return false;
5114 return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
5117 /* Finish up dynamic symbol handling. We set the contents of various
5118 dynamic sections here. */
5120 static bool
5121 _bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd,
5122 struct bfd_link_info * info,
5123 struct elf_link_hash_entry * h,
5124 Elf_Internal_Sym * sym)
5126 struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info);
5127 bfd * dynobj;
5129 dynobj = htab->root.dynobj;
5131 if (h->plt.offset != (bfd_vma) -1)
5133 asection * splt;
5134 asection * sgot;
5135 asection * srel;
5136 bfd_vma plt_index;
5137 bfd_vma got_offset;
5138 Elf_Internal_Rela rel;
5140 /* This symbol has an entry in the procedure linkage table. Set
5141 it up. */
5143 BFD_ASSERT (h->dynindx != -1);
5145 splt = htab->root.splt;
5146 sgot = htab->root.sgotplt;
5147 srel = htab->root.srelplt;
5148 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
5150 /* Get the index in the procedure linkage table which
5151 corresponds to this symbol. This is the index of this symbol
5152 in all the symbols for which we are making plt entries. The
5153 first entry in the procedure linkage table is reserved. */
5154 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
5155 / elf_mn10300_sizeof_plt (info));
5157 /* Get the offset into the .got table of the entry that
5158 corresponds to this function. Each .got entry is 4 bytes.
5159 The first three are reserved. */
5160 got_offset = (plt_index + 3) * 4;
5162 /* Fill in the entry in the procedure linkage table. */
5163 if (! bfd_link_pic (info))
5165 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
5166 elf_mn10300_sizeof_plt (info));
5167 bfd_put_32 (output_bfd,
5168 (sgot->output_section->vma
5169 + sgot->output_offset
5170 + got_offset),
5171 (splt->contents + h->plt.offset
5172 + elf_mn10300_plt_symbol_offset (info)));
5174 bfd_put_32 (output_bfd,
5175 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
5176 (splt->contents + h->plt.offset
5177 + elf_mn10300_plt_plt0_offset (info)));
5179 else
5181 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
5182 elf_mn10300_sizeof_plt (info));
5184 bfd_put_32 (output_bfd, got_offset,
5185 (splt->contents + h->plt.offset
5186 + elf_mn10300_plt_symbol_offset (info)));
5189 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
5190 (splt->contents + h->plt.offset
5191 + elf_mn10300_plt_reloc_offset (info)));
5193 /* Fill in the entry in the global offset table. */
5194 bfd_put_32 (output_bfd,
5195 (splt->output_section->vma
5196 + splt->output_offset
5197 + h->plt.offset
5198 + elf_mn10300_plt_temp_offset (info)),
5199 sgot->contents + got_offset);
5201 /* Fill in the entry in the .rela.plt section. */
5202 rel.r_offset = (sgot->output_section->vma
5203 + sgot->output_offset
5204 + got_offset);
5205 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
5206 rel.r_addend = 0;
5207 bfd_elf32_swap_reloca_out (output_bfd, &rel,
5208 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
5209 + plt_index));
5211 if (!h->def_regular)
5212 /* Mark the symbol as undefined, rather than as defined in
5213 the .plt section. Leave the value alone. */
5214 sym->st_shndx = SHN_UNDEF;
5217 if (h->got.offset != (bfd_vma) -1)
5219 asection * sgot;
5220 asection * srel;
5221 Elf_Internal_Rela rel;
5223 /* This symbol has an entry in the global offset table. Set it up. */
5224 sgot = htab->root.sgot;
5225 srel = htab->root.srelgot;
5226 BFD_ASSERT (sgot != NULL && srel != NULL);
5228 rel.r_offset = (sgot->output_section->vma
5229 + sgot->output_offset
5230 + (h->got.offset & ~1));
5232 switch (elf_mn10300_hash_entry (h)->tls_type)
5234 case GOT_TLS_GD:
5235 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5236 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset + 4);
5237 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_DTPMOD);
5238 rel.r_addend = 0;
5239 bfd_elf32_swap_reloca_out (output_bfd, & rel,
5240 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
5241 + srel->reloc_count));
5242 ++ srel->reloc_count;
5243 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_DTPOFF);
5244 rel.r_offset += 4;
5245 rel.r_addend = 0;
5246 break;
5248 case GOT_TLS_IE:
5249 /* We originally stored the addend in the GOT, but at this
5250 point, we want to move it to the reloc instead as that's
5251 where the dynamic linker wants it. */
5252 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + h->got.offset);
5253 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5254 if (h->dynindx == -1)
5255 rel.r_info = ELF32_R_INFO (0, R_MN10300_TLS_TPOFF);
5256 else
5257 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_TLS_TPOFF);
5258 break;
5260 default:
5261 /* If this is a -Bsymbolic link, and the symbol is defined
5262 locally, we just want to emit a RELATIVE reloc. Likewise if
5263 the symbol was forced to be local because of a version file.
5264 The entry in the global offset table will already have been
5265 initialized in the relocate_section function. */
5266 if (bfd_link_pic (info)
5267 && (info->symbolic || h->dynindx == -1)
5268 && h->def_regular)
5270 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
5271 rel.r_addend = (h->root.u.def.value
5272 + h->root.u.def.section->output_section->vma
5273 + h->root.u.def.section->output_offset);
5275 else
5277 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5278 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
5279 rel.r_addend = 0;
5283 if (ELF32_R_TYPE (rel.r_info) != R_MN10300_NONE)
5285 bfd_elf32_swap_reloca_out (output_bfd, &rel,
5286 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
5287 + srel->reloc_count));
5288 ++ srel->reloc_count;
5292 if (h->needs_copy)
5294 asection * s;
5295 Elf_Internal_Rela rel;
5297 /* This symbol needs a copy reloc. Set it up. */
5298 BFD_ASSERT (h->dynindx != -1
5299 && (h->root.type == bfd_link_hash_defined
5300 || h->root.type == bfd_link_hash_defweak));
5302 s = bfd_get_linker_section (dynobj, ".rela.bss");
5303 BFD_ASSERT (s != NULL);
5305 rel.r_offset = (h->root.u.def.value
5306 + h->root.u.def.section->output_section->vma
5307 + h->root.u.def.section->output_offset);
5308 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
5309 rel.r_addend = 0;
5310 bfd_elf32_swap_reloca_out (output_bfd, & rel,
5311 (bfd_byte *) ((Elf32_External_Rela *) s->contents
5312 + s->reloc_count));
5313 ++ s->reloc_count;
5316 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5317 if (h == elf_hash_table (info)->hdynamic
5318 || h == elf_hash_table (info)->hgot)
5319 sym->st_shndx = SHN_ABS;
5321 return true;
5324 /* Finish up the dynamic sections. */
5326 static bool
5327 _bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd,
5328 struct bfd_link_info * info)
5330 bfd * dynobj;
5331 asection * sgot;
5332 asection * sdyn;
5333 struct elf32_mn10300_link_hash_table *htab = elf32_mn10300_hash_table (info);
5335 dynobj = htab->root.dynobj;
5336 sgot = htab->root.sgotplt;
5337 BFD_ASSERT (sgot != NULL);
5338 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5340 if (elf_hash_table (info)->dynamic_sections_created)
5342 asection * splt;
5343 Elf32_External_Dyn * dyncon;
5344 Elf32_External_Dyn * dynconend;
5346 BFD_ASSERT (sdyn != NULL);
5348 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5349 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5351 for (; dyncon < dynconend; dyncon++)
5353 Elf_Internal_Dyn dyn;
5354 asection * s;
5356 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5358 switch (dyn.d_tag)
5360 default:
5361 break;
5363 case DT_PLTGOT:
5364 s = htab->root.sgot;
5365 goto get_vma;
5367 case DT_JMPREL:
5368 s = htab->root.srelplt;
5369 get_vma:
5370 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
5371 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5372 break;
5374 case DT_PLTRELSZ:
5375 s = htab->root.srelplt;
5376 dyn.d_un.d_val = s->size;
5377 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5378 break;
5382 /* Fill in the first entry in the procedure linkage table. */
5383 splt = htab->root.splt;
5384 if (splt && splt->size > 0)
5386 if (bfd_link_pic (info))
5388 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
5389 elf_mn10300_sizeof_plt (info));
5391 else
5393 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
5394 bfd_put_32 (output_bfd,
5395 sgot->output_section->vma + sgot->output_offset + 4,
5396 splt->contents + elf_mn10300_plt0_gotid_offset (info));
5397 bfd_put_32 (output_bfd,
5398 sgot->output_section->vma + sgot->output_offset + 8,
5399 splt->contents + elf_mn10300_plt0_linker_offset (info));
5402 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5403 really seem like the right value. */
5404 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
5406 /* UnixWare sets the entsize of .plt to 4, but this is incorrect
5407 as it means that the size of the PLT0 section (15 bytes) is not
5408 a multiple of the sh_entsize. Some ELF tools flag this as an
5409 error. We could pad PLT0 to 16 bytes, but that would introduce
5410 compatibilty issues with previous toolchains, so instead we
5411 just set the entry size to 1. */
5412 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 1;
5416 /* Fill in the first three entries in the global offset table. */
5417 if (sgot->size > 0)
5419 if (sdyn == NULL)
5420 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5421 else
5422 bfd_put_32 (output_bfd,
5423 sdyn->output_section->vma + sdyn->output_offset,
5424 sgot->contents);
5425 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5426 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5429 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5431 return true;
5434 /* Classify relocation types, such that combreloc can sort them
5435 properly. */
5437 static enum elf_reloc_type_class
5438 _bfd_mn10300_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
5439 const asection *rel_sec ATTRIBUTE_UNUSED,
5440 const Elf_Internal_Rela *rela)
5442 switch ((int) ELF32_R_TYPE (rela->r_info))
5444 case R_MN10300_RELATIVE: return reloc_class_relative;
5445 case R_MN10300_JMP_SLOT: return reloc_class_plt;
5446 case R_MN10300_COPY: return reloc_class_copy;
5447 default: return reloc_class_normal;
5451 /* Allocate space for an MN10300 extension to the bfd elf data structure. */
5453 static bool
5454 mn10300_elf_mkobject (bfd *abfd)
5456 return bfd_elf_allocate_object (abfd, sizeof (struct elf_mn10300_obj_tdata),
5457 MN10300_ELF_DATA);
5460 #define bfd_elf32_mkobject mn10300_elf_mkobject
5462 #ifndef ELF_ARCH
5463 #define TARGET_LITTLE_SYM mn10300_elf32_vec
5464 #define TARGET_LITTLE_NAME "elf32-mn10300"
5465 #define ELF_ARCH bfd_arch_mn10300
5466 #define ELF_TARGET_ID MN10300_ELF_DATA
5467 #define ELF_MACHINE_CODE EM_MN10300
5468 #define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
5469 #define ELF_MAXPAGESIZE 0x1000
5470 #endif
5472 #define elf_info_to_howto mn10300_info_to_howto
5473 #define elf_info_to_howto_rel NULL
5474 #define elf_backend_can_gc_sections 1
5475 #define elf_backend_rela_normal 1
5476 #define elf_backend_check_relocs mn10300_elf_check_relocs
5477 #define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
5478 #define elf_backend_relocate_section mn10300_elf_relocate_section
5479 #define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
5480 #define bfd_elf32_bfd_get_relocated_section_contents \
5481 mn10300_elf_get_relocated_section_contents
5482 #define bfd_elf32_bfd_link_hash_table_create \
5483 elf32_mn10300_link_hash_table_create
5485 #ifndef elf_symbol_leading_char
5486 #define elf_symbol_leading_char '_'
5487 #endif
5489 /* So we can set bits in e_flags. */
5490 #define elf_backend_final_write_processing \
5491 _bfd_mn10300_elf_final_write_processing
5492 #define elf_backend_object_p _bfd_mn10300_elf_object_p
5494 #define bfd_elf32_bfd_merge_private_bfd_data \
5495 _bfd_mn10300_elf_merge_private_bfd_data
5497 #define elf_backend_can_gc_sections 1
5498 #define elf_backend_create_dynamic_sections \
5499 _bfd_mn10300_elf_create_dynamic_sections
5500 #define elf_backend_adjust_dynamic_symbol \
5501 _bfd_mn10300_elf_adjust_dynamic_symbol
5502 #define elf_backend_size_dynamic_sections \
5503 _bfd_mn10300_elf_size_dynamic_sections
5504 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
5505 #define elf_backend_finish_dynamic_symbol \
5506 _bfd_mn10300_elf_finish_dynamic_symbol
5507 #define elf_backend_finish_dynamic_sections \
5508 _bfd_mn10300_elf_finish_dynamic_sections
5509 #define elf_backend_copy_indirect_symbol \
5510 _bfd_mn10300_copy_indirect_symbol
5511 #define elf_backend_reloc_type_class \
5512 _bfd_mn10300_elf_reloc_type_class
5514 #define elf_backend_want_got_plt 1
5515 #define elf_backend_plt_readonly 1
5516 #define elf_backend_want_plt_sym 0
5517 #define elf_backend_got_header_size 12
5518 #define elf_backend_dtrel_excludes_plt 1
5520 #include "elf32-target.h"