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* ia64-tdep.c (ia64_dummy_id): Use get_frame_pc.
[deliverable/binutils-gdb.git] / bfd / elf-m10300.c
CommitLineData
252b5132 1/* Matsushita 10300 specific support for 32-bit ELF
66eb6687 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
ab96bf03 3 2006, 2007 Free Software Foundation, Inc.
252b5132 4
0112cd26 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
0112cd26
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
0112cd26 10 (at your option) any later version.
252b5132 11
0112cd26
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
0112cd26
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
252b5132 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
252b5132
RH		 24#include "libbfd.h"
25#include "elf-bfd.h"
26#include "elf/mn10300.h"
603b7257 27#include "libiberty.h"
917583ad 28
03a12831
AO		 29/* The mn10300 linker needs to keep track of the number of relocs that
30 it decides to copy in check_relocs for each symbol. This is so
31 that it can discard PC relative relocs if it doesn't need them when
32 linking with -Bsymbolic. We store the information in a field
33 extending the regular ELF linker hash table. */
34
603b7257
NC		 35struct elf32_mn10300_link_hash_entry
36{
252b5132
RH		 37 /* The basic elf link hash table entry. */
38 struct elf_link_hash_entry root;
39
40 /* For function symbols, the number of times this function is
41 called directly (ie by name). */
42 unsigned int direct_calls;
43
44 /* For function symbols, the size of this function's stack
45 (if <= 255 bytes). We stuff this into "call" instructions
46 to this target when it's valid and profitable to do so.
47
48 This does not include stack allocated by movm! */
49 unsigned char stack_size;
50
51 /* For function symbols, arguments (if any) for movm instruction
52 in the prologue. We stuff this value into "call" instructions
53 to the target when it's valid and profitable to do so. */
54 unsigned char movm_args;
55
4cc11e76 56 /* For function symbols, the amount of stack space that would be allocated
252b5132
RH		 57 by the movm instruction. This is redundant with movm_args, but we
58 add it to the hash table to avoid computing it over and over. */
59 unsigned char movm_stack_size;
60
61/* When set, convert all "call" instructions to this target into "calls"
62 instructions. */
63#define MN10300_CONVERT_CALL_TO_CALLS 0x1
64
65/* Used to mark functions which have had redundant parts of their
66 prologue deleted. */
67#define MN10300_DELETED_PROLOGUE_BYTES 0x2
68 unsigned char flags;
eb13e63f
DD		 69
70 /* Calculated value. */
71 bfd_vma value;
252b5132
RH		 72};
73
74/* We derive a hash table from the main elf linker hash table so
75 we can store state variables and a secondary hash table without
76 resorting to global variables. */
603b7257
NC		 77struct elf32_mn10300_link_hash_table
78{
252b5132
RH		 79 /* The main hash table. */
80 struct elf_link_hash_table root;
81
82 /* A hash table for static functions. We could derive a new hash table
83 instead of using the full elf32_mn10300_link_hash_table if we wanted
84 to save some memory. */
85 struct elf32_mn10300_link_hash_table *static_hash_table;
86
87 /* Random linker state flags. */
88#define MN10300_HASH_ENTRIES_INITIALIZED 0x1
89 char flags;
90};
91
603b7257
NC		 92#ifndef streq
93#define streq(a, b) (strcmp ((a),(b)) == 0)
94#endif
95
252b5132
RH		 96/* For MN10300 linker hash table. */
97
98/* Get the MN10300 ELF linker hash table from a link_info structure. */
99
100#define elf32_mn10300_hash_table(p) \
101 ((struct elf32_mn10300_link_hash_table *) ((p)->hash))
102
103#define elf32_mn10300_link_hash_traverse(table, func, info) \
104 (elf_link_hash_traverse \
105 (&(table)->root, \
603b7257 106 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH		 107 (info)))
108
603b7257
NC		 109static reloc_howto_type elf_mn10300_howto_table[] =
110{
252b5132
RH		 111 /* Dummy relocation. Does nothing. */
112 HOWTO (R_MN10300_NONE,
113 0,
114 2,
115 16,
b34976b6 116 FALSE,
252b5132
RH		 117 0,
118 complain_overflow_bitfield,
119 bfd_elf_generic_reloc,
120 "R_MN10300_NONE",
b34976b6 121 FALSE,
252b5132
RH		 122 0,
123 0,
b34976b6 124 FALSE),
252b5132
RH		 125 /* Standard 32 bit reloc. */
126 HOWTO (R_MN10300_32,
127 0,
128 2,
129 32,
b34976b6 130 FALSE,
252b5132
RH		 131 0,
132 complain_overflow_bitfield,
133 bfd_elf_generic_reloc,
134 "R_MN10300_32",
b34976b6 135 FALSE,
252b5132
RH		 136 0xffffffff,
137 0xffffffff,
b34976b6 138 FALSE),
252b5132
RH		 139 /* Standard 16 bit reloc. */
140 HOWTO (R_MN10300_16,
141 0,
142 1,
143 16,
b34976b6 144 FALSE,
252b5132
RH		 145 0,
146 complain_overflow_bitfield,
147 bfd_elf_generic_reloc,
148 "R_MN10300_16",
b34976b6 149 FALSE,
252b5132
RH		 150 0xffff,
151 0xffff,
b34976b6 152 FALSE),
252b5132
RH		 153 /* Standard 8 bit reloc. */
154 HOWTO (R_MN10300_8,
155 0,
156 0,
157 8,
b34976b6 158 FALSE,
252b5132
RH		 159 0,
160 complain_overflow_bitfield,
161 bfd_elf_generic_reloc,
162 "R_MN10300_8",
b34976b6 163 FALSE,
252b5132
RH		 164 0xff,
165 0xff,
b34976b6 166 FALSE),
252b5132
RH		 167 /* Standard 32bit pc-relative reloc. */
168 HOWTO (R_MN10300_PCREL32,
169 0,
170 2,
171 32,
b34976b6 172 TRUE,
252b5132
RH		 173 0,
174 complain_overflow_bitfield,
175 bfd_elf_generic_reloc,
176 "R_MN10300_PCREL32",
b34976b6 177 FALSE,
252b5132
RH		 178 0xffffffff,
179 0xffffffff,
b34976b6 180 TRUE),
252b5132
RH		 181 /* Standard 16bit pc-relative reloc. */
182 HOWTO (R_MN10300_PCREL16,
183 0,
184 1,
185 16,
b34976b6 186 TRUE,
252b5132
RH		 187 0,
188 complain_overflow_bitfield,
189 bfd_elf_generic_reloc,
190 "R_MN10300_PCREL16",
b34976b6 191 FALSE,
252b5132
RH		 192 0xffff,
193 0xffff,
b34976b6 194 TRUE),
252b5132
RH		 195 /* Standard 8 pc-relative reloc. */
196 HOWTO (R_MN10300_PCREL8,
197 0,
198 0,
199 8,
b34976b6 200 TRUE,
252b5132
RH		 201 0,
202 complain_overflow_bitfield,
203 bfd_elf_generic_reloc,
204 "R_MN10300_PCREL8",
b34976b6 205 FALSE,
252b5132
RH		 206 0xff,
207 0xff,
b34976b6 208 TRUE),
252b5132 209
603b7257 210 /* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 211 HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
212 0, /* rightshift */
213 0, /* size (0 = byte, 1 = short, 2 = long) */
214 0, /* bitsize */
b34976b6 215 FALSE, /* pc_relative */
252b5132
RH		 216 0, /* bitpos */
217 complain_overflow_dont, /* complain_on_overflow */
218 NULL, /* special_function */
219 "R_MN10300_GNU_VTINHERIT", /* name */
b34976b6 220 FALSE, /* partial_inplace */
252b5132
RH		 221 0, /* src_mask */
222 0, /* dst_mask */
b34976b6 223 FALSE), /* pcrel_offset */
252b5132
RH		 224
225 /* GNU extension to record C++ vtable member usage */
226 HOWTO (R_MN10300_GNU_VTENTRY, /* type */
227 0, /* rightshift */
228 0, /* size (0 = byte, 1 = short, 2 = long) */
229 0, /* bitsize */
b34976b6 230 FALSE, /* pc_relative */
252b5132
RH		 231 0, /* bitpos */
232 complain_overflow_dont, /* complain_on_overflow */
233 NULL, /* special_function */
234 "R_MN10300_GNU_VTENTRY", /* name */
b34976b6 235 FALSE, /* partial_inplace */
252b5132
RH		 236 0, /* src_mask */
237 0, /* dst_mask */
b34976b6 238 FALSE), /* pcrel_offset */
252b5132
RH		 239
240 /* Standard 24 bit reloc. */
241 HOWTO (R_MN10300_24,
242 0,
243 2,
244 24,
b34976b6 245 FALSE,
252b5132
RH		 246 0,
247 complain_overflow_bitfield,
248 bfd_elf_generic_reloc,
249 "R_MN10300_24",
b34976b6 250 FALSE,
252b5132
RH		 251 0xffffff,
252 0xffffff,
b34976b6 253 FALSE),
03a12831
AO		 254 HOWTO (R_MN10300_GOTPC32, /* type */
255 0, /* rightshift */
256 2, /* size (0 = byte, 1 = short, 2 = long) */
257 32, /* bitsize */
258 TRUE, /* pc_relative */
259 0, /* bitpos */
260 complain_overflow_bitfield, /* complain_on_overflow */
261 bfd_elf_generic_reloc, /* */
262 "R_MN10300_GOTPC32", /* name */
263 FALSE, /* partial_inplace */
264 0xffffffff, /* src_mask */
265 0xffffffff, /* dst_mask */
266 TRUE), /* pcrel_offset */
267
268 HOWTO (R_MN10300_GOTPC16, /* type */
269 0, /* rightshift */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
271 16, /* bitsize */
272 TRUE, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_bitfield, /* complain_on_overflow */
275 bfd_elf_generic_reloc, /* */
276 "R_MN10300_GOTPC16", /* name */
277 FALSE, /* partial_inplace */
278 0xffff, /* src_mask */
279 0xffff, /* dst_mask */
280 TRUE), /* pcrel_offset */
281
282 HOWTO (R_MN10300_GOTOFF32, /* type */
283 0, /* rightshift */
284 2, /* size (0 = byte, 1 = short, 2 = long) */
285 32, /* bitsize */
286 FALSE, /* pc_relative */
287 0, /* bitpos */
288 complain_overflow_bitfield, /* complain_on_overflow */
289 bfd_elf_generic_reloc, /* */
290 "R_MN10300_GOTOFF32", /* name */
291 FALSE, /* partial_inplace */
292 0xffffffff, /* src_mask */
293 0xffffffff, /* dst_mask */
294 FALSE), /* pcrel_offset */
295
296 HOWTO (R_MN10300_GOTOFF24, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 24, /* bitsize */
300 FALSE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_bitfield, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* */
304 "R_MN10300_GOTOFF24", /* name */
305 FALSE, /* partial_inplace */
306 0xffffff, /* src_mask */
307 0xffffff, /* dst_mask */
308 FALSE), /* pcrel_offset */
309
310 HOWTO (R_MN10300_GOTOFF16, /* type */
311 0, /* rightshift */
312 1, /* size (0 = byte, 1 = short, 2 = long) */
313 16, /* bitsize */
314 FALSE, /* pc_relative */
315 0, /* bitpos */
316 complain_overflow_bitfield, /* complain_on_overflow */
317 bfd_elf_generic_reloc, /* */
318 "R_MN10300_GOTOFF16", /* name */
319 FALSE, /* partial_inplace */
320 0xffff, /* src_mask */
321 0xffff, /* dst_mask */
322 FALSE), /* pcrel_offset */
323
324 HOWTO (R_MN10300_PLT32, /* type */
325 0, /* rightshift */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
327 32, /* bitsize */
328 TRUE, /* pc_relative */
329 0, /* bitpos */
330 complain_overflow_bitfield, /* complain_on_overflow */
331 bfd_elf_generic_reloc, /* */
332 "R_MN10300_PLT32", /* name */
333 FALSE, /* partial_inplace */
334 0xffffffff, /* src_mask */
335 0xffffffff, /* dst_mask */
336 TRUE), /* pcrel_offset */
337
338 HOWTO (R_MN10300_PLT16, /* type */
339 0, /* rightshift */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
341 16, /* bitsize */
342 TRUE, /* pc_relative */
343 0, /* bitpos */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* */
346 "R_MN10300_PLT16", /* name */
347 FALSE, /* partial_inplace */
348 0xffff, /* src_mask */
349 0xffff, /* dst_mask */
350 TRUE), /* pcrel_offset */
351
352 HOWTO (R_MN10300_GOT32, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 32, /* bitsize */
356 FALSE, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* */
360 "R_MN10300_GOT32", /* name */
361 FALSE, /* partial_inplace */
362 0xffffffff, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
365
366 HOWTO (R_MN10300_GOT24, /* type */
367 0, /* rightshift */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
369 24, /* bitsize */
370 FALSE, /* pc_relative */
371 0, /* bitpos */
372 complain_overflow_bitfield, /* complain_on_overflow */
373 bfd_elf_generic_reloc, /* */
374 "R_MN10300_GOT24", /* name */
375 FALSE, /* partial_inplace */
376 0xffffffff, /* src_mask */
377 0xffffffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
379
380 HOWTO (R_MN10300_GOT16, /* type */
381 0, /* rightshift */
382 1, /* size (0 = byte, 1 = short, 2 = long) */
383 16, /* bitsize */
384 FALSE, /* pc_relative */
385 0, /* bitpos */
386 complain_overflow_bitfield, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* */
388 "R_MN10300_GOT16", /* name */
389 FALSE, /* partial_inplace */
390 0xffffffff, /* src_mask */
391 0xffffffff, /* dst_mask */
392 FALSE), /* pcrel_offset */
393
394 HOWTO (R_MN10300_COPY, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 32, /* bitsize */
398 FALSE, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_bitfield, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* */
402 "R_MN10300_COPY", /* name */
403 FALSE, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 FALSE), /* pcrel_offset */
407
408 HOWTO (R_MN10300_GLOB_DAT, /* type */
409 0, /* rightshift */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
411 32, /* bitsize */
412 FALSE, /* pc_relative */
413 0, /* bitpos */
414 complain_overflow_bitfield, /* complain_on_overflow */
415 bfd_elf_generic_reloc, /* */
416 "R_MN10300_GLOB_DAT", /* name */
417 FALSE, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE), /* pcrel_offset */
421
422 HOWTO (R_MN10300_JMP_SLOT, /* type */
423 0, /* rightshift */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
425 32, /* bitsize */
426 FALSE, /* pc_relative */
427 0, /* bitpos */
428 complain_overflow_bitfield, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* */
430 "R_MN10300_JMP_SLOT", /* name */
431 FALSE, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
435
436 HOWTO (R_MN10300_RELATIVE, /* type */
437 0, /* rightshift */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
439 32, /* bitsize */
440 FALSE, /* pc_relative */
441 0, /* bitpos */
442 complain_overflow_bitfield, /* complain_on_overflow */
443 bfd_elf_generic_reloc, /* */
444 "R_MN10300_RELATIVE", /* name */
445 FALSE, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 FALSE), /* pcrel_offset */
bfff1642
NC		 449
450 EMPTY_HOWTO (24),
451 EMPTY_HOWTO (25),
452 EMPTY_HOWTO (26),
453 EMPTY_HOWTO (27),
454 EMPTY_HOWTO (28),
455 EMPTY_HOWTO (29),
456 EMPTY_HOWTO (30),
457 EMPTY_HOWTO (31),
458 EMPTY_HOWTO (32),
459
460 HOWTO (R_MN10300_SYM_DIFF, /* type */
461 0, /* rightshift */
462 2, /* size (0 = byte, 1 = short, 2 = long) */
463 32, /* bitsize */
464 FALSE, /* pc_relative */
465 0, /* bitpos */
466 complain_overflow_dont,/* complain_on_overflow */
467 NULL, /* special handler. */
468 "R_MN10300_SYM_DIFF", /* name */
469 FALSE, /* partial_inplace */
470 0xffffffff, /* src_mask */
471 0xffffffff, /* dst_mask */
569006e5
NC		 472 FALSE), /* pcrel_offset */
473
474 HOWTO (R_MN10300_ALIGN, /* type */
475 0, /* rightshift */
476 0, /* size (0 = byte, 1 = short, 2 = long) */
477 32, /* bitsize */
478 FALSE, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_dont,/* complain_on_overflow */
481 NULL, /* special handler. */
482 "R_MN10300_ALIGN", /* name */
483 FALSE, /* partial_inplace */
484 0, /* src_mask */
485 0, /* dst_mask */
bfff1642 486 FALSE) /* pcrel_offset */
252b5132
RH		 487};
488
603b7257
NC		 489struct mn10300_reloc_map
490{
252b5132
RH		 491 bfd_reloc_code_real_type bfd_reloc_val;
492 unsigned char elf_reloc_val;
493};
494
603b7257
NC		 495static const struct mn10300_reloc_map mn10300_reloc_map[] =
496{
252b5132
RH		 497 { BFD_RELOC_NONE, R_MN10300_NONE, },
498 { BFD_RELOC_32, R_MN10300_32, },
499 { BFD_RELOC_16, R_MN10300_16, },
500 { BFD_RELOC_8, R_MN10300_8, },
501 { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
502 { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
503 { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
504 { BFD_RELOC_24, R_MN10300_24, },
505 { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
506 { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
03a12831
AO		 507 { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
508 { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
509 { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
510 { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
511 { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
512 { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
513 { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
514 { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
515 { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
516 { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
517 { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
518 { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
519 { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
520 { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
569006e5
NC		 521 { BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF },
522 { BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN }
252b5132
RH		 523};
524
03a12831
AO		 525/* Create the GOT section. */
526
527static bfd_boolean
603b7257
NC		 528_bfd_mn10300_elf_create_got_section (bfd * abfd,
529 struct bfd_link_info * info)
03a12831
AO		 530{
531 flagword flags;
532 flagword pltflags;
533 asection * s;
534 struct elf_link_hash_entry * h;
9c5bfbb7 535 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
03a12831
AO		 536 int ptralign;
537
538 /* This function may be called more than once. */
539 if (bfd_get_section_by_name (abfd, ".got") != NULL)
540 return TRUE;
541
542 switch (bed->s->arch_size)
543 {
544 case 32:
545 ptralign = 2;
546 break;
547
548 case 64:
549 ptralign = 3;
550 break;
551
552 default:
553 bfd_set_error (bfd_error_bad_value);
554 return FALSE;
555 }
556
557 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
558 | SEC_LINKER_CREATED);
559
560 pltflags = flags;
561 pltflags |= SEC_CODE;
562 if (bed->plt_not_loaded)
563 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
564 if (bed->plt_readonly)
565 pltflags |= SEC_READONLY;
566
3496cb2a 567 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
03a12831 568 if (s == NULL
03a12831
AO		 569 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
570 return FALSE;
571
d98685ac
AM		 572 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
573 .plt section. */
7325306f
RS		 574 if (bed->want_plt_sym)
575 {
576 h = _bfd_elf_define_linkage_sym (abfd, info, s,
577 "_PROCEDURE_LINKAGE_TABLE_");
578 elf_hash_table (info)->hplt = h;
579 if (h == NULL)
580 return FALSE;
581 }
03a12831 582
3496cb2a 583 s = bfd_make_section_with_flags (abfd, ".got", flags);
03a12831 584 if (s == NULL
03a12831
AO		 585 || ! bfd_set_section_alignment (abfd, s, ptralign))
586 return FALSE;
587
588 if (bed->want_got_plt)
589 {
3496cb2a 590 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
03a12831 591 if (s == NULL
03a12831
AO		 592 || ! bfd_set_section_alignment (abfd, s, ptralign))
593 return FALSE;
594 }
595
596 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
597 (or .got.plt) section. We don't do this in the linker script
598 because we don't want to define the symbol if we are not creating
599 a global offset table. */
d98685ac 600 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
03a12831 601 elf_hash_table (info)->hgot = h;
d98685ac
AM		 602 if (h == NULL)
603 return FALSE;
03a12831
AO		 604
605 /* The first bit of the global offset table is the header. */
3b36f7e6 606 s->size += bed->got_header_size;
03a12831
AO		 607
608 return TRUE;
609}
610
252b5132 611static reloc_howto_type *
603b7257
NC		 612bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
613 bfd_reloc_code_real_type code)
252b5132
RH		 614{
615 unsigned int i;
616
603b7257
NC		 617 for (i = ARRAY_SIZE (mn10300_reloc_map); i--;)
618 if (mn10300_reloc_map[i].bfd_reloc_val == code)
619 return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
252b5132
RH		 620
621 return NULL;
622}
623
157090f7
AM		 624static reloc_howto_type *
625bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
626 const char *r_name)
627{
628 unsigned int i;
629
603b7257 630 for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;)
157090f7
AM		 631 if (elf_mn10300_howto_table[i].name != NULL
632 && strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0)
603b7257 633 return elf_mn10300_howto_table + i;
157090f7
AM		 634
635 return NULL;
636}
637
252b5132
RH		 638/* Set the howto pointer for an MN10300 ELF reloc. */
639
640static void
603b7257
NC		 641mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
642 arelent *cache_ptr,
643 Elf_Internal_Rela *dst)
252b5132
RH		 644{
645 unsigned int r_type;
646
647 r_type = ELF32_R_TYPE (dst->r_info);
648 BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
603b7257 649 cache_ptr->howto = elf_mn10300_howto_table + r_type;
252b5132
RH		 650}
651
652/* Look through the relocs for a section during the first phase.
653 Since we don't do .gots or .plts, we just need to consider the
654 virtual table relocs for gc. */
655
b34976b6 656static bfd_boolean
603b7257
NC		 657mn10300_elf_check_relocs (bfd *abfd,
658 struct bfd_link_info *info,
659 asection *sec,
660 const Elf_Internal_Rela *relocs)
252b5132 661{
bfff1642 662 bfd_boolean sym_diff_reloc_seen;
252b5132 663 Elf_Internal_Shdr *symtab_hdr;
62d7f790 664 Elf_Internal_Sym * isymbuf = NULL;
5582a088 665 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 666 const Elf_Internal_Rela *rel;
667 const Elf_Internal_Rela *rel_end;
03a12831
AO		 668 bfd * dynobj;
669 bfd_vma * local_got_offsets;
670 asection * sgot;
671 asection * srelgot;
672 asection * sreloc;
62d7f790 673 bfd_boolean result = FALSE;
03a12831
AO		 674
675 sgot = NULL;
676 srelgot = NULL;
677 sreloc = NULL;
252b5132 678
1049f94e 679 if (info->relocatable)
b34976b6 680 return TRUE;
252b5132
RH		 681
682 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
62d7f790 683 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
252b5132 684 sym_hashes = elf_sym_hashes (abfd);
252b5132 685
03a12831
AO		 686 dynobj = elf_hash_table (info)->dynobj;
687 local_got_offsets = elf_local_got_offsets (abfd);
252b5132 688 rel_end = relocs + sec->reloc_count;
bfff1642 689 sym_diff_reloc_seen = FALSE;
603b7257 690
252b5132
RH		 691 for (rel = relocs; rel < rel_end; rel++)
692 {
693 struct elf_link_hash_entry *h;
694 unsigned long r_symndx;
62d7f790 695 unsigned int r_type;
252b5132
RH		 696
697 r_symndx = ELF32_R_SYM (rel->r_info);
698 if (r_symndx < symtab_hdr->sh_info)
699 h = NULL;
700 else
973a3492
L		 701 {
702 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
703 while (h->root.type == bfd_link_hash_indirect
704 || h->root.type == bfd_link_hash_warning)
705 h = (struct elf_link_hash_entry *) h->root.u.i.link;
706 }
252b5132 707
62d7f790
NC		 708 r_type = ELF32_R_TYPE (rel->r_info);
709
03a12831
AO		 710 /* Some relocs require a global offset table. */
711 if (dynobj == NULL)
712 {
62d7f790 713 switch (r_type)
03a12831
AO		 714 {
715 case R_MN10300_GOT32:
716 case R_MN10300_GOT24:
717 case R_MN10300_GOT16:
718 case R_MN10300_GOTOFF32:
719 case R_MN10300_GOTOFF24:
720 case R_MN10300_GOTOFF16:
721 case R_MN10300_GOTPC32:
722 case R_MN10300_GOTPC16:
723 elf_hash_table (info)->dynobj = dynobj = abfd;
724 if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
62d7f790 725 goto fail;
03a12831
AO		 726 break;
727
728 default:
729 break;
730 }
731 }
732
62d7f790 733 switch (r_type)
252b5132
RH		 734 {
735 /* This relocation describes the C++ object vtable hierarchy.
736 Reconstruct it for later use during GC. */
737 case R_MN10300_GNU_VTINHERIT:
c152c796 738 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
62d7f790 739 goto fail;
252b5132
RH		 740 break;
741
742 /* This relocation describes which C++ vtable entries are actually
743 used. Record for later use during GC. */
744 case R_MN10300_GNU_VTENTRY:
d17e0c6e
JB		 745 BFD_ASSERT (h != NULL);
746 if (h != NULL
747 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
62d7f790 748 goto fail;
252b5132 749 break;
62d7f790 750
03a12831
AO		 751 case R_MN10300_GOT32:
752 case R_MN10300_GOT24:
753 case R_MN10300_GOT16:
754 /* This symbol requires a global offset table entry. */
755
756 if (sgot == NULL)
757 {
758 sgot = bfd_get_section_by_name (dynobj, ".got");
759 BFD_ASSERT (sgot != NULL);
760 }
761
762 if (srelgot == NULL
763 && (h != NULL || info->shared))
764 {
765 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
766 if (srelgot == NULL)
767 {
3496cb2a
L		 768 srelgot = bfd_make_section_with_flags (dynobj,
769 ".rela.got",
770 (SEC_ALLOC
771 | SEC_LOAD
772 | SEC_HAS_CONTENTS
773 | SEC_IN_MEMORY
774 | SEC_LINKER_CREATED
775 | SEC_READONLY));
03a12831 776 if (srelgot == NULL
03a12831 777 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
62d7f790 778 goto fail;
03a12831
AO		 779 }
780 }
781
782 if (h != NULL)
783 {
784 if (h->got.offset != (bfd_vma) -1)
785 /* We have already allocated space in the .got. */
786 break;
787
eea6121a 788 h->got.offset = sgot->size;
03a12831
AO		 789
790 /* Make sure this symbol is output as a dynamic symbol. */
791 if (h->dynindx == -1)
792 {
c152c796 793 if (! bfd_elf_link_record_dynamic_symbol (info, h))
62d7f790 794 goto fail;
03a12831
AO		 795 }
796
eea6121a 797 srelgot->size += sizeof (Elf32_External_Rela);
03a12831
AO		 798 }
799 else
800 {
801 /* This is a global offset table entry for a local
3b36f7e6 802 symbol. */
03a12831
AO		 803 if (local_got_offsets == NULL)
804 {
805 size_t size;
806 unsigned int i;
807
808 size = symtab_hdr->sh_info * sizeof (bfd_vma);
603b7257 809 local_got_offsets = bfd_alloc (abfd, size);
03a12831
AO		 810
811 if (local_got_offsets == NULL)
62d7f790
NC		 812 goto fail;
813
03a12831
AO		 814 elf_local_got_offsets (abfd) = local_got_offsets;
815
816 for (i = 0; i < symtab_hdr->sh_info; i++)
817 local_got_offsets[i] = (bfd_vma) -1;
818 }
819
820 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
821 /* We have already allocated space in the .got. */
822 break;
823
eea6121a 824 local_got_offsets[r_symndx] = sgot->size;
03a12831
AO		 825
826 if (info->shared)
827 /* If we are generating a shared object, we need to
828 output a R_MN10300_RELATIVE reloc so that the dynamic
829 linker can adjust this GOT entry. */
eea6121a 830 srelgot->size += sizeof (Elf32_External_Rela);
03a12831
AO		 831 }
832
eea6121a 833 sgot->size += 4;
03a12831
AO		 834 break;
835
836 case R_MN10300_PLT32:
837 case R_MN10300_PLT16:
838 /* This symbol requires a procedure linkage table entry. We
839 actually build the entry in adjust_dynamic_symbol,
840 because this might be a case of linking PIC code which is
841 never referenced by a dynamic object, in which case we
842 don't need to generate a procedure linkage table entry
843 after all. */
844
845 /* If this is a local symbol, we resolve it directly without
846 creating a procedure linkage table entry. */
847 if (h == NULL)
848 continue;
849
850 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
851 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
852 break;
853
f5385ebf 854 h->needs_plt = 1;
03a12831
AO		 855 break;
856
03a12831
AO		 857 case R_MN10300_24:
858 case R_MN10300_16:
859 case R_MN10300_8:
860 case R_MN10300_PCREL32:
861 case R_MN10300_PCREL16:
862 case R_MN10300_PCREL8:
863 if (h != NULL)
f5385ebf 864 h->non_got_ref = 1;
146ccdbb 865 break;
03a12831 866
bfff1642
NC		 867 case R_MN10300_SYM_DIFF:
868 sym_diff_reloc_seen = TRUE;
869 break;
870
146ccdbb
AO		 871 case R_MN10300_32:
872 if (h != NULL)
f5385ebf 873 h->non_got_ref = 1;
146ccdbb 874
bfff1642
NC		 875 /* If we are creating a shared library, then we
876 need to copy the reloc into the shared library. */
03a12831 877 if (info->shared
bfff1642
NC		 878 && (sec->flags & SEC_ALLOC) != 0
879 /* Do not generate a dynamic reloc for a
880 reloc associated with a SYM_DIFF operation. */
881 && ! sym_diff_reloc_seen)
03a12831 882 {
bfff1642 883 asection * sym_section = NULL;
03a12831 884
bfff1642
NC		 885 /* Find the section containing the
886 symbol involved in the relocation. */
887 if (h == NULL)
888 {
bfff1642
NC		 889 Elf_Internal_Sym * isym;
890
bfff1642
NC		 891 if (isymbuf == NULL)
892 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
893 symtab_hdr->sh_info, 0,
894 NULL, NULL, NULL);
895 if (isymbuf)
896 {
897 isym = isymbuf + r_symndx;
898 /* All we care about is whether this local symbol is absolute. */
899 if (isym->st_shndx == SHN_ABS)
900 sym_section = bfd_abs_section_ptr;
901 }
902 }
903 else
904 {
905 if (h->root.type == bfd_link_hash_defined
906 || h->root.type == bfd_link_hash_defweak)
907 sym_section = h->root.u.def.section;
908 }
03a12831 909
bfff1642
NC		 910 /* If the symbol is absolute then the relocation can
911 be resolved during linking and there is no need for
912 a dynamic reloc. */
913 if (sym_section != bfd_abs_section_ptr)
914 {
915 /* When creating a shared object, we must copy these
916 reloc types into the output file. We create a reloc
917 section in dynobj and make room for this reloc. */
03a12831
AO		 918 if (sreloc == NULL)
919 {
bfff1642 920 const char * name;
03a12831 921
bfff1642
NC		 922 name = (bfd_elf_string_from_elf_section
923 (abfd,
924 elf_elfheader (abfd)->e_shstrndx,
925 elf_section_data (sec)->rel_hdr.sh_name));
926 if (name == NULL)
62d7f790 927 goto fail;
bfff1642
NC		 928
929 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
930 && streq (bfd_get_section_name (abfd, sec), name + 5));
931
932 sreloc = bfd_get_section_by_name (dynobj, name);
933 if (sreloc == NULL)
934 {
935 flagword flags;
936
937 flags = (SEC_HAS_CONTENTS | SEC_READONLY
938 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
939 if ((sec->flags & SEC_ALLOC) != 0)
940 flags |= SEC_ALLOC | SEC_LOAD;
941 sreloc = bfd_make_section_with_flags (dynobj, name, flags);
942 if (sreloc == NULL
943 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
62d7f790 944 goto fail;
bfff1642 945 }
03a12831 946 }
03a12831 947
bfff1642
NC		 948 sreloc->size += sizeof (Elf32_External_Rela);
949 }
03a12831
AO		 950 }
951
952 break;
252b5132 953 }
bfff1642
NC		 954
955 if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF)
956 sym_diff_reloc_seen = FALSE;
252b5132
RH		 957 }
958
62d7f790
NC		 959 result = TRUE;
960 fail:
961 if (isymbuf != NULL)
962 free (isymbuf);
963
964 return result;
252b5132
RH		 965}
966
967/* Return the section that should be marked against GC for a given
968 relocation. */
969
970static asection *
07adf181
AM		 971mn10300_elf_gc_mark_hook (asection *sec,
972 struct bfd_link_info *info,
973 Elf_Internal_Rela *rel,
974 struct elf_link_hash_entry *h,
975 Elf_Internal_Sym *sym)
252b5132
RH		 976{
977 if (h != NULL)
07adf181
AM		 978 switch (ELF32_R_TYPE (rel->r_info))
979 {
980 case R_MN10300_GNU_VTINHERIT:
981 case R_MN10300_GNU_VTENTRY:
982 return NULL;
983 }
984
985 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 986}
987
988/* Perform a relocation as part of a final link. */
603b7257 989
252b5132 990static bfd_reloc_status_type
603b7257
NC		 991mn10300_elf_final_link_relocate (reloc_howto_type *howto,
992 bfd *input_bfd,
993 bfd *output_bfd ATTRIBUTE_UNUSED,
994 asection *input_section,
995 bfd_byte *contents,
996 bfd_vma offset,
997 bfd_vma value,
998 bfd_vma addend,
999 struct elf_link_hash_entry * h,
1000 unsigned long symndx,
1001 struct bfd_link_info *info,
1002 asection *sym_sec ATTRIBUTE_UNUSED,
1003 int is_local ATTRIBUTE_UNUSED)
252b5132 1004{
bfff1642
NC		 1005 static asection * sym_diff_section;
1006 static bfd_vma sym_diff_value;
1007 bfd_boolean is_sym_diff_reloc;
252b5132 1008 unsigned long r_type = howto->type;
603b7257 1009 bfd_byte * hit_data = contents + offset;
03a12831
AO		 1010 bfd * dynobj;
1011 bfd_vma * local_got_offsets;
1012 asection * sgot;
1013 asection * splt;
1014 asection * sreloc;
1015
1016 dynobj = elf_hash_table (info)->dynobj;
1017 local_got_offsets = elf_local_got_offsets (input_bfd);
1018
1019 sgot = NULL;
1020 splt = NULL;
1021 sreloc = NULL;
252b5132 1022
146ccdbb
AO		 1023 switch (r_type)
1024 {
1025 case R_MN10300_24:
1026 case R_MN10300_16:
1027 case R_MN10300_8:
1028 case R_MN10300_PCREL8:
1029 case R_MN10300_PCREL16:
1030 case R_MN10300_PCREL32:
1031 case R_MN10300_GOTOFF32:
1032 case R_MN10300_GOTOFF24:
1033 case R_MN10300_GOTOFF16:
1034 if (info->shared
1035 && (input_section->flags & SEC_ALLOC) != 0
1036 && h != NULL
7e2294f9 1037 && ! SYMBOL_REFERENCES_LOCAL (info, h))
146ccdbb
AO		 1038 return bfd_reloc_dangerous;
1039 }
1040
bfff1642
NC		 1041 is_sym_diff_reloc = FALSE;
1042 if (sym_diff_section != NULL)
1043 {
1044 BFD_ASSERT (sym_diff_section == input_section);
1045
1046 switch (r_type)
1047 {
1048 case R_MN10300_32:
1049 case R_MN10300_24:
1050 case R_MN10300_16:
1051 case R_MN10300_8:
1052 value -= sym_diff_value;
b5f5fd96
NC		 1053 /* If we are computing a 32-bit value for the location lists
1054 and the result is 0 then we add one to the value. A zero
1055 value can result because of linker relaxation deleteing
1056 prologue instructions and using a value of 1 (for the begin
1057 and end offsets in the location list entry) results in a
1058 nul entry which does not prevent the following entries from
1059 being parsed. */
1060 if (r_type == R_MN10300_32
1061 && value == 0
1062 && strcmp (input_section->name, ".debug_loc") == 0)
1063 value = 1;
bfff1642
NC		 1064 sym_diff_section = NULL;
1065 is_sym_diff_reloc = TRUE;
1066 break;
1067
1068 default:
1069 sym_diff_section = NULL;
1070 break;
1071 }
1072 }
1073
252b5132
RH		 1074 switch (r_type)
1075 {
bfff1642
NC		 1076 case R_MN10300_SYM_DIFF:
1077 BFD_ASSERT (addend == 0);
1078 /* Cache the input section and value.
1079 The offset is unreliable, since relaxation may
1080 have reduced the following reloc's offset. */
1081 sym_diff_section = input_section;
1082 sym_diff_value = value;
1083 return bfd_reloc_ok;
1084
569006e5 1085 case R_MN10300_ALIGN:
252b5132
RH		 1086 case R_MN10300_NONE:
1087 return bfd_reloc_ok;
1088
1089 case R_MN10300_32:
03a12831 1090 if (info->shared
bfff1642
NC		 1091 /* Do not generate relocs when an R_MN10300_32 has been used
1092 with an R_MN10300_SYM_DIFF to compute a difference of two
1093 symbols. */
1094 && is_sym_diff_reloc == FALSE
1095 /* Also, do not generate a reloc when the symbol associated
1096 with the R_MN10300_32 reloc is absolute - there is no
1097 need for a run time computation in this case. */
1098 && sym_sec != bfd_abs_section_ptr
1099 /* If the section is not going to be allocated at load time
1100 then there is no need to generate relocs for it. */
03a12831
AO		 1101 && (input_section->flags & SEC_ALLOC) != 0)
1102 {
1103 Elf_Internal_Rela outrel;
1104 bfd_boolean skip, relocate;
1105
1106 /* When generating a shared object, these relocations are
1107 copied into the output file to be resolved at run
1108 time. */
1109 if (sreloc == NULL)
1110 {
1111 const char * name;
1112
1113 name = (bfd_elf_string_from_elf_section
1114 (input_bfd,
1115 elf_elfheader (input_bfd)->e_shstrndx,
1116 elf_section_data (input_section)->rel_hdr.sh_name));
1117 if (name == NULL)
1118 return FALSE;
1119
0112cd26 1120 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
603b7257
NC		 1121 && streq (bfd_get_section_name (input_bfd,
1122 input_section),
1123 name + 5));
03a12831
AO		 1124
1125 sreloc = bfd_get_section_by_name (dynobj, name);
1126 BFD_ASSERT (sreloc != NULL);
1127 }
1128
1129 skip = FALSE;
1130
eea6121a
AM		 1131 outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
1132 input_section, offset);
1133 if (outrel.r_offset == (bfd_vma) -1)
1134 skip = TRUE;
03a12831
AO		 1135
1136 outrel.r_offset += (input_section->output_section->vma
1137 + input_section->output_offset);
1138
1139 if (skip)
1140 {
1141 memset (&outrel, 0, sizeof outrel);
1142 relocate = FALSE;
1143 }
1144 else
1145 {
1146 /* h->dynindx may be -1 if this symbol was marked to
1147 become local. */
1148 if (h == NULL
7e2294f9 1149 || SYMBOL_REFERENCES_LOCAL (info, h))
03a12831
AO		 1150 {
1151 relocate = TRUE;
1152 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1153 outrel.r_addend = value + addend;
1154 }
1155 else
1156 {
1157 BFD_ASSERT (h->dynindx != -1);
1158 relocate = FALSE;
1159 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
1160 outrel.r_addend = value + addend;
1161 }
1162 }
1163
1164 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
560e09e9
NC		 1165 (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
1166 + sreloc->reloc_count));
03a12831
AO		 1167 ++sreloc->reloc_count;
1168
1169 /* If this reloc is against an external symbol, we do
1170 not want to fiddle with the addend. Otherwise, we
1171 need to include the symbol value so that it becomes
1172 an addend for the dynamic reloc. */
1173 if (! relocate)
1174 return bfd_reloc_ok;
1175 }
252b5132
RH		 1176 value += addend;
1177 bfd_put_32 (input_bfd, value, hit_data);
1178 return bfd_reloc_ok;
1179
1180 case R_MN10300_24:
1181 value += addend;
1182
010ac81f 1183 if ((long) value > 0x7fffff || (long) value < -0x800000)
252b5132
RH		 1184 return bfd_reloc_overflow;
1185
1186 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1187 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1188 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1189 return bfd_reloc_ok;
1190
1191 case R_MN10300_16:
1192 value += addend;
1193
010ac81f 1194 if ((long) value > 0x7fff || (long) value < -0x8000)
252b5132
RH		 1195 return bfd_reloc_overflow;
1196
1197 bfd_put_16 (input_bfd, value, hit_data);
1198 return bfd_reloc_ok;
1199
1200 case R_MN10300_8:
1201 value += addend;
1202
010ac81f 1203 if ((long) value > 0x7f || (long) value < -0x80)
252b5132
RH		 1204 return bfd_reloc_overflow;
1205
1206 bfd_put_8 (input_bfd, value, hit_data);
1207 return bfd_reloc_ok;
1208
1209 case R_MN10300_PCREL8:
1210 value -= (input_section->output_section->vma
1211 + input_section->output_offset);
1212 value -= offset;
1213 value += addend;
1214
010ac81f 1215 if ((long) value > 0xff || (long) value < -0x100)
252b5132
RH		 1216 return bfd_reloc_overflow;
1217
1218 bfd_put_8 (input_bfd, value, hit_data);
1219 return bfd_reloc_ok;
1220
1221 case R_MN10300_PCREL16:
1222 value -= (input_section->output_section->vma
1223 + input_section->output_offset);
1224 value -= offset;
1225 value += addend;
1226
010ac81f 1227 if ((long) value > 0xffff || (long) value < -0x10000)
252b5132
RH		 1228 return bfd_reloc_overflow;
1229
1230 bfd_put_16 (input_bfd, value, hit_data);
1231 return bfd_reloc_ok;
1232
1233 case R_MN10300_PCREL32:
1234 value -= (input_section->output_section->vma
1235 + input_section->output_offset);
1236 value -= offset;
1237 value += addend;
1238
1239 bfd_put_32 (input_bfd, value, hit_data);
1240 return bfd_reloc_ok;
1241
1242 case R_MN10300_GNU_VTINHERIT:
1243 case R_MN10300_GNU_VTENTRY:
1244 return bfd_reloc_ok;
1245
03a12831
AO		 1246 case R_MN10300_GOTPC32:
1247 /* Use global offset table as symbol value. */
03a12831
AO		 1248 value = bfd_get_section_by_name (dynobj,
1249 ".got")->output_section->vma;
1250 value -= (input_section->output_section->vma
1251 + input_section->output_offset);
1252 value -= offset;
1253 value += addend;
1254
1255 bfd_put_32 (input_bfd, value, hit_data);
1256 return bfd_reloc_ok;
3b36f7e6 1257
03a12831
AO		 1258 case R_MN10300_GOTPC16:
1259 /* Use global offset table as symbol value. */
03a12831
AO		 1260 value = bfd_get_section_by_name (dynobj,
1261 ".got")->output_section->vma;
1262 value -= (input_section->output_section->vma
1263 + input_section->output_offset);
1264 value -= offset;
1265 value += addend;
1266
1267 if ((long) value > 0xffff || (long) value < -0x10000)
1268 return bfd_reloc_overflow;
1269
1270 bfd_put_16 (input_bfd, value, hit_data);
1271 return bfd_reloc_ok;
1272
1273 case R_MN10300_GOTOFF32:
1274 value -= bfd_get_section_by_name (dynobj,
1275 ".got")->output_section->vma;
1276 value += addend;
3b36f7e6 1277
03a12831
AO		 1278 bfd_put_32 (input_bfd, value, hit_data);
1279 return bfd_reloc_ok;
1280
1281 case R_MN10300_GOTOFF24:
1282 value -= bfd_get_section_by_name (dynobj,
1283 ".got")->output_section->vma;
1284 value += addend;
3b36f7e6 1285
03a12831
AO		 1286 if ((long) value > 0x7fffff || (long) value < -0x800000)
1287 return bfd_reloc_overflow;
1288
1289 bfd_put_8 (input_bfd, value, hit_data);
1290 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1291 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1292 return bfd_reloc_ok;
1293
1294 case R_MN10300_GOTOFF16:
1295 value -= bfd_get_section_by_name (dynobj,
1296 ".got")->output_section->vma;
1297 value += addend;
3b36f7e6 1298
03a12831
AO		 1299 if ((long) value > 0xffff || (long) value < -0x10000)
1300 return bfd_reloc_overflow;
1301
1302 bfd_put_16 (input_bfd, value, hit_data);
1303 return bfd_reloc_ok;
1304
1305 case R_MN10300_PLT32:
1306 if (h != NULL
1307 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1308 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1309 && h->plt.offset != (bfd_vma) -1)
1310 {
1311 asection * splt;
1312
1313 splt = bfd_get_section_by_name (dynobj, ".plt");
3b36f7e6 1314
03a12831
AO		 1315 value = (splt->output_section->vma
1316 + splt->output_offset
1317 + h->plt.offset) - value;
1318 }
1319
1320 value -= (input_section->output_section->vma
1321 + input_section->output_offset);
1322 value -= offset;
1323 value += addend;
1324
1325 bfd_put_32 (input_bfd, value, hit_data);
1326 return bfd_reloc_ok;
1327
1328 case R_MN10300_PLT16:
1329 if (h != NULL
1330 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1331 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1332 && h->plt.offset != (bfd_vma) -1)
1333 {
1334 asection * splt;
1335
1336 splt = bfd_get_section_by_name (dynobj, ".plt");
3b36f7e6 1337
03a12831
AO		 1338 value = (splt->output_section->vma
1339 + splt->output_offset
1340 + h->plt.offset) - value;
1341 }
1342
1343 value -= (input_section->output_section->vma
1344 + input_section->output_offset);
1345 value -= offset;
1346 value += addend;
1347
1348 if ((long) value > 0xffff || (long) value < -0x10000)
1349 return bfd_reloc_overflow;
1350
1351 bfd_put_16 (input_bfd, value, hit_data);
1352 return bfd_reloc_ok;
1353
1354 case R_MN10300_GOT32:
1355 case R_MN10300_GOT24:
1356 case R_MN10300_GOT16:
1357 {
1358 asection * sgot;
1359
1360 sgot = bfd_get_section_by_name (dynobj, ".got");
3b36f7e6 1361
03a12831
AO		 1362 if (h != NULL)
1363 {
1364 bfd_vma off;
1365
1366 off = h->got.offset;
1367 BFD_ASSERT (off != (bfd_vma) -1);
1368
1369 if (! elf_hash_table (info)->dynamic_sections_created
7e2294f9 1370 || SYMBOL_REFERENCES_LOCAL (info, h))
03a12831
AO		 1371 /* This is actually a static link, or it is a
1372 -Bsymbolic link and the symbol is defined
1373 locally, or the symbol was forced to be local
1374 because of a version file. We must initialize
1375 this entry in the global offset table.
1376
1377 When doing a dynamic link, we create a .rela.got
1378 relocation entry to initialize the value. This
1379 is done in the finish_dynamic_symbol routine. */
1380 bfd_put_32 (output_bfd, value,
1381 sgot->contents + off);
1382
1383 value = sgot->output_offset + off;
1384 }
1385 else
1386 {
1387 bfd_vma off;
1388
1389 off = elf_local_got_offsets (input_bfd)[symndx];
1390
1391 bfd_put_32 (output_bfd, value, sgot->contents + off);
1392
1393 if (info->shared)
1394 {
1395 asection * srelgot;
1396 Elf_Internal_Rela outrel;
1397
1398 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1399 BFD_ASSERT (srelgot != NULL);
1400
1401 outrel.r_offset = (sgot->output_section->vma
1402 + sgot->output_offset
1403 + off);
1404 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1405 outrel.r_addend = value;
1406 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
560e09e9
NC		 1407 (bfd_byte *) (((Elf32_External_Rela *)
1408 srelgot->contents)
1409 + srelgot->reloc_count));
03a12831
AO		 1410 ++ srelgot->reloc_count;
1411 }
1412
1413 value = sgot->output_offset + off;
1414 }
1415 }
1416
1417 value += addend;
1418
1419 if (r_type == R_MN10300_GOT32)
1420 {
1421 bfd_put_32 (input_bfd, value, hit_data);
1422 return bfd_reloc_ok;
1423 }
1424 else if (r_type == R_MN10300_GOT24)
1425 {
1426 if ((long) value > 0x7fffff || (long) value < -0x800000)
1427 return bfd_reloc_overflow;
1428
1429 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1430 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1431 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1432 return bfd_reloc_ok;
1433 }
1434 else if (r_type == R_MN10300_GOT16)
1435 {
1436 if ((long) value > 0xffff || (long) value < -0x10000)
1437 return bfd_reloc_overflow;
1438
1439 bfd_put_16 (input_bfd, value, hit_data);
1440 return bfd_reloc_ok;
1441 }
1442 /* Fall through. */
3b36f7e6 1443
252b5132
RH		 1444 default:
1445 return bfd_reloc_notsupported;
1446 }
1447}
252b5132
RH		 1448\f
1449/* Relocate an MN10300 ELF section. */
603b7257 1450
b34976b6 1451static bfd_boolean
603b7257
NC		 1452mn10300_elf_relocate_section (bfd *output_bfd,
1453 struct bfd_link_info *info,
1454 bfd *input_bfd,
1455 asection *input_section,
1456 bfd_byte *contents,
1457 Elf_Internal_Rela *relocs,
1458 Elf_Internal_Sym *local_syms,
1459 asection **local_sections)
252b5132
RH		 1460{
1461 Elf_Internal_Shdr *symtab_hdr;
b2a8e766 1462 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1463 Elf_Internal_Rela *rel, *relend;
1464
1465 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
b2a8e766 1466 sym_hashes = elf_sym_hashes (input_bfd);
252b5132
RH		 1467
1468 rel = relocs;
1469 relend = relocs + input_section->reloc_count;
1470 for (; rel < relend; rel++)
1471 {
1472 int r_type;
1473 reloc_howto_type *howto;
1474 unsigned long r_symndx;
1475 Elf_Internal_Sym *sym;
1476 asection *sec;
1477 struct elf32_mn10300_link_hash_entry *h;
1478 bfd_vma relocation;
1479 bfd_reloc_status_type r;
1480
1481 r_symndx = ELF32_R_SYM (rel->r_info);
1482 r_type = ELF32_R_TYPE (rel->r_info);
1483 howto = elf_mn10300_howto_table + r_type;
1484
1485 /* Just skip the vtable gc relocs. */
1486 if (r_type == R_MN10300_GNU_VTINHERIT
1487 || r_type == R_MN10300_GNU_VTENTRY)
1488 continue;
1489
252b5132
RH		 1490 h = NULL;
1491 sym = NULL;
1492 sec = NULL;
1493 if (r_symndx < symtab_hdr->sh_info)
1494 {
1495 sym = local_syms + r_symndx;
1496 sec = local_sections[r_symndx];
8517fae7 1497 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 1498 }
1499 else
1500 {
560e09e9
NC		 1501 bfd_boolean unresolved_reloc;
1502 bfd_boolean warned;
1503 struct elf_link_hash_entry *hh;
1504
b2a8e766
AM		 1505 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1506 r_symndx, symtab_hdr, sym_hashes,
1507 hh, sec, relocation,
1508 unresolved_reloc, warned);
560e09e9
NC		 1509
1510 h = (struct elf32_mn10300_link_hash_entry *) hh;
1511
1512 if ((h->root.root.type == bfd_link_hash_defined
252b5132 1513 || h->root.root.type == bfd_link_hash_defweak)
560e09e9 1514 && ( r_type == R_MN10300_GOTPC32
03a12831
AO		 1515 || r_type == R_MN10300_GOTPC16
1516 || (( r_type == R_MN10300_PLT32
1517 || r_type == R_MN10300_PLT16)
1518 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
1519 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
1520 && h->root.plt.offset != (bfd_vma) -1)
1521 || (( r_type == R_MN10300_GOT32
1522 || r_type == R_MN10300_GOT24
1523 || r_type == R_MN10300_GOT16)
1524 && elf_hash_table (info)->dynamic_sections_created
7e2294f9 1525 && !SYMBOL_REFERENCES_LOCAL (info, hh))
146ccdbb 1526 || (r_type == R_MN10300_32
bfff1642
NC		 1527 /* _32 relocs in executables force _COPY relocs,
1528 such that the address of the symbol ends up
1529 being local. */
1530 && !info->executable
7e2294f9 1531 && !SYMBOL_REFERENCES_LOCAL (info, hh)
03a12831
AO		 1532 && ((input_section->flags & SEC_ALLOC) != 0
1533 /* DWARF will emit R_MN10300_32 relocations
1534 in its sections against symbols defined
1535 externally in shared libraries. We can't
1536 do anything with them here. */
1537 || ((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 1538 && h->root.def_dynamic)))))
560e09e9
NC		 1539 /* In these cases, we don't need the relocation
1540 value. We check specially because in some
1541 obscure cases sec->output_section will be NULL. */
03a12831 1542 relocation = 0;
560e09e9 1543
ab96bf03 1544 else if (!info->relocatable && unresolved_reloc)
560e09e9 1545 (*_bfd_error_handler)
843fe662
L		 1546 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
1547 input_bfd,
1548 input_section,
1549 (long) rel->r_offset,
1550 howto->name,
1551 h->root.root.root.string);
252b5132
RH		 1552 }
1553
ab96bf03
AM		 1554 if (sec != NULL && elf_discarded_section (sec))
1555 {
1556 /* For relocs against symbols from removed linkonce sections,
1557 or sections discarded by a linker script, we just want the
1558 section contents zeroed. Avoid any special processing. */
1559 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1560 rel->r_info = 0;
1561 rel->r_addend = 0;
1562 continue;
1563 }
1564
1565 if (info->relocatable)
1566 continue;
1567
252b5132
RH		 1568 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1569 input_section,
1570 contents, rel->r_offset,
1571 relocation, rel->r_addend,
603b7257 1572 (struct elf_link_hash_entry *) h,
03a12831 1573 r_symndx,
252b5132
RH		 1574 info, sec, h == NULL);
1575
1576 if (r != bfd_reloc_ok)
1577 {
1578 const char *name;
603b7257 1579 const char *msg = NULL;
252b5132
RH		 1580
1581 if (h != NULL)
1582 name = h->root.root.root.string;
1583 else
1584 {
1585 name = (bfd_elf_string_from_elf_section
1586 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1587 if (name == NULL || *name == '\0')
1588 name = bfd_section_name (input_bfd, sec);
1589 }
1590
1591 switch (r)
1592 {
1593 case bfd_reloc_overflow:
1594 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 1595 (info, (h ? &h->root.root : NULL), name,
1596 howto->name, (bfd_vma) 0, input_bfd,
1597 input_section, rel->r_offset)))
b34976b6 1598 return FALSE;
252b5132
RH		 1599 break;
1600
1601 case bfd_reloc_undefined:
1602 if (! ((*info->callbacks->undefined_symbol)
1603 (info, name, input_bfd, input_section,
b34976b6
AM		 1604 rel->r_offset, TRUE)))
1605 return FALSE;
252b5132
RH		 1606 break;
1607
1608 case bfd_reloc_outofrange:
1609 msg = _("internal error: out of range error");
1610 goto common_error;
1611
1612 case bfd_reloc_notsupported:
1613 msg = _("internal error: unsupported relocation error");
1614 goto common_error;
1615
1616 case bfd_reloc_dangerous:
c9b57b7e
DD		 1617 if (r_type == R_MN10300_PCREL32)
1618 msg = _("error: inappropriate relocation type for shared"
1619 " library (did you forget -fpic?)");
1620 else
1621 msg = _("internal error: suspicious relocation type used"
1622 " in shared library");
252b5132
RH		 1623 goto common_error;
1624
1625 default:
1626 msg = _("internal error: unknown error");
603b7257 1627 /* Fall through. */
252b5132
RH		 1628
1629 common_error:
1630 if (!((*info->callbacks->warning)
1631 (info, msg, name, input_bfd, input_section,
1632 rel->r_offset)))
b34976b6 1633 return FALSE;
252b5132
RH		 1634 break;
1635 }
1636 }
1637 }
1638
b34976b6 1639 return TRUE;
252b5132
RH		 1640}
1641
1642/* Finish initializing one hash table entry. */
603b7257 1643
b34976b6 1644static bfd_boolean
603b7257
NC		 1645elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry,
1646 void * in_args)
252b5132
RH		 1647{
1648 struct elf32_mn10300_link_hash_entry *entry;
603b7257 1649 struct bfd_link_info *link_info = (struct bfd_link_info *) in_args;
252b5132
RH		 1650 unsigned int byte_count = 0;
1651
010ac81f 1652 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
252b5132 1653
e92d460e
AM		 1654 if (entry->root.root.type == bfd_link_hash_warning)
1655 entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
1656
252b5132
RH		 1657 /* If we already know we want to convert "call" to "calls" for calls
1658 to this symbol, then return now. */
1659 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
b34976b6 1660 return TRUE;
252b5132
RH		 1661
1662 /* If there are no named calls to this symbol, or there's nothing we
1055df0f
AO		 1663 can move from the function itself into the "call" instruction,
1664 then note that all "call" instructions should be converted into
1665 "calls" instructions and return. If a symbol is available for
1666 dynamic symbol resolution (overridable or overriding), avoid
1667 custom calling conventions. */
252b5132 1668 if (entry->direct_calls == 0
1055df0f
AO		 1669 || (entry->stack_size == 0 && entry->movm_args == 0)
1670 || (elf_hash_table (link_info)->dynamic_sections_created
1671 && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
1672 && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
252b5132
RH		 1673 {
1674 /* Make a note that we should convert "call" instructions to "calls"
1675 instructions for calls to this symbol. */
1676 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
b34976b6 1677 return TRUE;
252b5132
RH		 1678 }
1679
1680 /* We may be able to move some instructions from the function itself into
1681 the "call" instruction. Count how many bytes we might be able to
1682 eliminate in the function itself. */
1683
1684 /* A movm instruction is two bytes. */
1685 if (entry->movm_args)
1686 byte_count += 2;
1687
1688 /* Count the insn to allocate stack space too. */
1a101a42
AM		 1689 if (entry->stack_size > 0)
1690 {
1691 if (entry->stack_size <= 128)
1692 byte_count += 3;
1693 else
1694 byte_count += 4;
1695 }
252b5132
RH		 1696
1697 /* If using "call" will result in larger code, then turn all
4cc11e76 1698 the associated "call" instructions into "calls" instructions. */
252b5132
RH		 1699 if (byte_count < entry->direct_calls)
1700 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1701
1702 /* This routine never fails. */
b34976b6 1703 return TRUE;
252b5132
RH		 1704}
1705
eb13e63f 1706/* Used to count hash table entries. */
603b7257 1707
eb13e63f
DD		 1708static bfd_boolean
1709elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED,
603b7257 1710 void * in_args)
eb13e63f 1711{
bfff1642 1712 int *count = (int *) in_args;
eb13e63f
DD		 1713
1714 (*count) ++;
1715 return TRUE;
1716}
1717
1718/* Used to enumerate hash table entries into a linear array. */
603b7257 1719
eb13e63f
DD		 1720static bfd_boolean
1721elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry,
603b7257 1722 void * in_args)
eb13e63f
DD		 1723{
1724 struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args;
1725
1726 **ptr = gen_entry;
1727 (*ptr) ++;
1728 return TRUE;
1729}
1730
1731/* Used to sort the array created by the above. */
603b7257 1732
eb13e63f
DD		 1733static int
1734sort_by_value (const void *va, const void *vb)
1735{
1736 struct elf32_mn10300_link_hash_entry *a
bfff1642 1737 = *(struct elf32_mn10300_link_hash_entry **) va;
eb13e63f 1738 struct elf32_mn10300_link_hash_entry *b
bfff1642 1739 = *(struct elf32_mn10300_link_hash_entry **) vb;
eb13e63f
DD		 1740
1741 return a->value - b->value;
1742}
1743
603b7257
NC		 1744/* Compute the stack size and movm arguments for the function
1745 referred to by HASH at address ADDR in section with
1746 contents CONTENTS, store the information in the hash table. */
1747
1748static void
1749compute_function_info (bfd *abfd,
1750 struct elf32_mn10300_link_hash_entry *hash,
1751 bfd_vma addr,
1752 unsigned char *contents)
1753{
1754 unsigned char byte1, byte2;
1755 /* We only care about a very small subset of the possible prologue
1756 sequences here. Basically we look for:
1757
1758 movm [d2,d3,a2,a3],sp (optional)
1759 add <size>,sp (optional, and only for sizes which fit in an unsigned
1760 8 bit number)
1761
1762 If we find anything else, we quit. */
1763
1764 /* Look for movm [regs],sp. */
1765 byte1 = bfd_get_8 (abfd, contents + addr);
1766 byte2 = bfd_get_8 (abfd, contents + addr + 1);
1767
1768 if (byte1 == 0xcf)
1769 {
1770 hash->movm_args = byte2;
1771 addr += 2;
1772 byte1 = bfd_get_8 (abfd, contents + addr);
1773 byte2 = bfd_get_8 (abfd, contents + addr + 1);
1774 }
1775
1776 /* Now figure out how much stack space will be allocated by the movm
1777 instruction. We need this kept separate from the function's normal
1778 stack space. */
1779 if (hash->movm_args)
1780 {
1781 /* Space for d2. */
1782 if (hash->movm_args & 0x80)
1783 hash->movm_stack_size += 4;
1784
1785 /* Space for d3. */
1786 if (hash->movm_args & 0x40)
1787 hash->movm_stack_size += 4;
1788
1789 /* Space for a2. */
1790 if (hash->movm_args & 0x20)
1791 hash->movm_stack_size += 4;
1792
1793 /* Space for a3. */
1794 if (hash->movm_args & 0x10)
1795 hash->movm_stack_size += 4;
1796
1797 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
1798 if (hash->movm_args & 0x08)
1799 hash->movm_stack_size += 8 * 4;
1800
1801 if (bfd_get_mach (abfd) == bfd_mach_am33
1802 || bfd_get_mach (abfd) == bfd_mach_am33_2)
1803 {
1804 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
1805 if (hash->movm_args & 0x1)
1806 hash->movm_stack_size += 6 * 4;
1807
1808 /* exreg1 space. e4, e5, e6, e7 */
1809 if (hash->movm_args & 0x2)
1810 hash->movm_stack_size += 4 * 4;
1811
1812 /* exreg0 space. e2, e3 */
1813 if (hash->movm_args & 0x4)
1814 hash->movm_stack_size += 2 * 4;
1815 }
1816 }
1817
1818 /* Now look for the two stack adjustment variants. */
1819 if (byte1 == 0xf8 && byte2 == 0xfe)
1820 {
1821 int temp = bfd_get_8 (abfd, contents + addr + 2);
1822 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
1823
1824 hash->stack_size = -temp;
1825 }
1826 else if (byte1 == 0xfa && byte2 == 0xfe)
1827 {
1828 int temp = bfd_get_16 (abfd, contents + addr + 2);
1829 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
1830 temp = -temp;
1831
1832 if (temp < 255)
1833 hash->stack_size = temp;
1834 }
1835
1836 /* If the total stack to be allocated by the call instruction is more
1837 than 255 bytes, then we can't remove the stack adjustment by using
1838 "call" (we might still be able to remove the "movm" instruction. */
1839 if (hash->stack_size + hash->movm_stack_size > 255)
1840 hash->stack_size = 0;
1841}
1842
1843/* Delete some bytes from a section while relaxing. */
1844
1845static bfd_boolean
1846mn10300_elf_relax_delete_bytes (bfd *abfd,
1847 asection *sec,
1848 bfd_vma addr,
1849 int count)
1850{
1851 Elf_Internal_Shdr *symtab_hdr;
1852 unsigned int sec_shndx;
1853 bfd_byte *contents;
1854 Elf_Internal_Rela *irel, *irelend;
1855 Elf_Internal_Rela *irelalign;
1856 bfd_vma toaddr;
1857 Elf_Internal_Sym *isym, *isymend;
1858 struct elf_link_hash_entry **sym_hashes;
1859 struct elf_link_hash_entry **end_hashes;
1860 unsigned int symcount;
1861
1862 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1863
1864 contents = elf_section_data (sec)->this_hdr.contents;
1865
603b7257
NC		 1866 irelalign = NULL;
1867 toaddr = sec->size;
1868
1869 irel = elf_section_data (sec)->relocs;
1870 irelend = irel + sec->reloc_count;
1871
cf4a529b
NC		 1872 if (sec->reloc_count > 0)
1873 {
1874 /* If there is an align reloc at the end of the section ignore it.
1875 GAS creates these relocs for reasons of its own, and they just
1876 serve to keep the section artifically inflated. */
1877 if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN)
1878 --irelend;
569006e5 1879
cf4a529b 1880 /* The deletion must stop at the next ALIGN reloc for an aligment
b5f5fd96
NC		 1881 power larger than, or not a multiple of, the number of bytes we
1882 are deleting. */
cf4a529b 1883 for (; irel < irelend; irel++)
b5f5fd96
NC		 1884 {
1885 int alignment = 1 << irel->r_addend;
1886
1887 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
1888 && irel->r_offset > addr
1889 && irel->r_offset < toaddr
1890 && (count < alignment
1891 || alignment % count != 0))
1892 {
1893 irelalign = irel;
1894 toaddr = irel->r_offset;
1895 break;
1896 }
1897 }
cf4a529b 1898 }
569006e5 1899
603b7257
NC		 1900 /* Actually delete the bytes. */
1901 memmove (contents + addr, contents + addr + count,
1902 (size_t) (toaddr - addr - count));
569006e5
NC		 1903
1904 /* Adjust the section's size if we are shrinking it, or else
1905 pad the bytes between the end of the shrunken region and
1906 the start of the next region with NOP codes. */
1907 if (irelalign == NULL)
1908 {
1909 sec->size -= count;
1910 /* Include symbols at the end of the section, but
1911 not at the end of a sub-region of the section. */
1912 toaddr ++;
1913 }
1914 else
1915 {
1916 int i;
1917
1918#define NOP_OPCODE 0xcb
1919
1920 for (i = 0; i < count; i ++)
1921 bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
1922 }
603b7257
NC		 1923
1924 /* Adjust all the relocs. */
1925 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1926 {
1927 /* Get the new reloc address. */
1928 if ((irel->r_offset > addr
b5f5fd96
NC		 1929 && irel->r_offset < toaddr)
1930 || (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
1931 && irel->r_offset == toaddr))
603b7257
NC		 1932 irel->r_offset -= count;
1933 }
1934
b5f5fd96
NC		 1935 /* Adjust the local symbols in the section, reducing their value
1936 by the number of bytes deleted. Note - symbols within the deleted
1937 region are moved to the address of the start of the region, which
1938 actually means that they will address the byte beyond the end of
1939 the region once the deletion has been completed. */
603b7257
NC		 1940 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1941 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1942 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
1943 {
1944 if (isym->st_shndx == sec_shndx
1945 && isym->st_value > addr
569006e5 1946 && isym->st_value < toaddr)
b5f5fd96
NC		 1947 {
1948 if (isym->st_value < addr + count)
1949 isym->st_value = addr;
1950 else
1951 isym->st_value -= count;
1952 }
bfff1642
NC		 1953 /* Adjust the function symbol's size as well. */
1954 else if (isym->st_shndx == sec_shndx
1955 && ELF_ST_TYPE (isym->st_info) == STT_FUNC
1956 && isym->st_value + isym->st_size > addr
569006e5 1957 && isym->st_value + isym->st_size < toaddr)
bfff1642 1958 isym->st_size -= count;
603b7257
NC		 1959 }
1960
1961 /* Now adjust the global symbols defined in this section. */
1962 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1963 - symtab_hdr->sh_info);
1964 sym_hashes = elf_sym_hashes (abfd);
1965 end_hashes = sym_hashes + symcount;
1966 for (; sym_hashes < end_hashes; sym_hashes++)
1967 {
1968 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1969
1970 if ((sym_hash->root.type == bfd_link_hash_defined
1971 || sym_hash->root.type == bfd_link_hash_defweak)
1972 && sym_hash->root.u.def.section == sec
1973 && sym_hash->root.u.def.value > addr
569006e5 1974 && sym_hash->root.u.def.value < toaddr)
b5f5fd96
NC		 1975 {
1976 if (sym_hash->root.u.def.value < addr + count)
1977 sym_hash->root.u.def.value = addr;
1978 else
1979 sym_hash->root.u.def.value -= count;
1980 }
bfff1642
NC		 1981 /* Adjust the function symbol's size as well. */
1982 else if (sym_hash->root.type == bfd_link_hash_defined
1983 && sym_hash->root.u.def.section == sec
1984 && sym_hash->type == STT_FUNC
1985 && sym_hash->root.u.def.value + sym_hash->size > addr
569006e5 1986 && sym_hash->root.u.def.value + sym_hash->size < toaddr)
bfff1642 1987 sym_hash->size -= count;
603b7257
NC		 1988 }
1989
b5f5fd96
NC		 1990 /* See if we can move the ALIGN reloc forward.
1991 We have adjusted r_offset for it already. */
1992 if (irelalign != NULL)
1993 {
1994 bfd_vma alignto, alignaddr;
1995
1996 if ((int) irelalign->r_addend > 0)
1997 {
1998 /* This is the old address. */
1999 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
2000 /* This is where the align points to now. */
2001 alignaddr = BFD_ALIGN (irelalign->r_offset,
2002 1 << irelalign->r_addend);
2003 if (alignaddr < alignto)
2004 /* Tail recursion. */
2005 return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr,
2006 (int) (alignto - alignaddr));
2007 }
2008 }
2009
603b7257
NC		 2010 return TRUE;
2011}
2012
2013/* Return TRUE if a symbol exists at the given address, else return
2014 FALSE. */
2015
2016static bfd_boolean
2017mn10300_elf_symbol_address_p (bfd *abfd,
2018 asection *sec,
2019 Elf_Internal_Sym *isym,
2020 bfd_vma addr)
2021{
2022 Elf_Internal_Shdr *symtab_hdr;
2023 unsigned int sec_shndx;
2024 Elf_Internal_Sym *isymend;
2025 struct elf_link_hash_entry **sym_hashes;
2026 struct elf_link_hash_entry **end_hashes;
2027 unsigned int symcount;
2028
2029 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
2030
2031 /* Examine all the symbols. */
2032 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2033 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
2034 if (isym->st_shndx == sec_shndx
2035 && isym->st_value == addr)
2036 return TRUE;
2037
2038 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2039 - symtab_hdr->sh_info);
2040 sym_hashes = elf_sym_hashes (abfd);
2041 end_hashes = sym_hashes + symcount;
2042 for (; sym_hashes < end_hashes; sym_hashes++)
2043 {
2044 struct elf_link_hash_entry *sym_hash = *sym_hashes;
2045
2046 if ((sym_hash->root.type == bfd_link_hash_defined
2047 || sym_hash->root.type == bfd_link_hash_defweak)
2048 && sym_hash->root.u.def.section == sec
2049 && sym_hash->root.u.def.value == addr)
2050 return TRUE;
2051 }
2052
2053 return FALSE;
2054}
eb13e63f 2055
252b5132
RH		 2056/* This function handles relaxing for the mn10300.
2057
4cc11e76 2058 There are quite a few relaxing opportunities available on the mn10300:
252b5132
RH		 2059
2060 * calls:32 -> calls:16 2 bytes
2061 * call:32 -> call:16 2 bytes
2062
2063 * call:32 -> calls:32 1 byte
2064 * call:16 -> calls:16 1 byte
2065 * These are done anytime using "calls" would result
2066 in smaller code, or when necessary to preserve the
2067 meaning of the program.
2068
2069 * call:32 varies
2070 * call:16
2071 * In some circumstances we can move instructions
2072 from a function prologue into a "call" instruction.
2073 This is only done if the resulting code is no larger
2074 than the original code.
2075
252b5132
RH		 2076 * jmp:32 -> jmp:16 2 bytes
2077 * jmp:16 -> bra:8 1 byte
2078
2079 * If the previous instruction is a conditional branch
2080 around the jump/bra, we may be able to reverse its condition
2081 and change its target to the jump's target. The jump/bra
2082 can then be deleted. 2 bytes
2083
2084 * mov abs32 -> mov abs16 1 or 2 bytes
2085
2086 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
2087 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
2088
2089 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
2090 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
2091
2092 We don't handle imm16->imm8 or d16->d8 as they're very rare
2093 and somewhat more difficult to support. */
2094
b34976b6 2095static bfd_boolean
603b7257
NC		 2096mn10300_elf_relax_section (bfd *abfd,
2097 asection *sec,
2098 struct bfd_link_info *link_info,
2099 bfd_boolean *again)
252b5132
RH		 2100{
2101 Elf_Internal_Shdr *symtab_hdr;
2102 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH		 2103 Elf_Internal_Rela *irel, *irelend;
2104 bfd_byte *contents = NULL;
6cdc0ccc 2105 Elf_Internal_Sym *isymbuf = NULL;
252b5132 2106 struct elf32_mn10300_link_hash_table *hash_table;
6cdc0ccc 2107 asection *section = sec;
fc91707c 2108 bfd_vma align_gap_adjustment;
252b5132
RH		 2109
2110 /* Assume nothing changes. */
b34976b6 2111 *again = FALSE;
252b5132
RH		 2112
2113 /* We need a pointer to the mn10300 specific hash table. */
2114 hash_table = elf32_mn10300_hash_table (link_info);
2115
2116 /* Initialize fields in each hash table entry the first time through. */
2117 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
2118 {
2119 bfd *input_bfd;
2120
2121 /* Iterate over all the input bfds. */
2122 for (input_bfd = link_info->input_bfds;
2123 input_bfd != NULL;
2124 input_bfd = input_bfd->link_next)
2125 {
252b5132
RH		 2126 /* We're going to need all the symbols for each bfd. */
2127 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6cdc0ccc 2128 if (symtab_hdr->sh_info != 0)
9ad5cbcf 2129 {
6cdc0ccc
AM		 2130 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2131 if (isymbuf == NULL)
2132 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2133 symtab_hdr->sh_info, 0,
2134 NULL, NULL, NULL);
2135 if (isymbuf == NULL)
010ac81f
KH		 2136 goto error_return;
2137 }
252b5132
RH		 2138
2139 /* Iterate over each section in this bfd. */
2140 for (section = input_bfd->sections;
2141 section != NULL;
2142 section = section->next)
2143 {
2144 struct elf32_mn10300_link_hash_entry *hash;
2145 Elf_Internal_Sym *sym;
86033394 2146 asection *sym_sec = NULL;
252b5132
RH		 2147 const char *sym_name;
2148 char *new_name;
252b5132 2149
e948afaf 2150 /* If there's nothing to do in this section, skip it. */
eb13e63f
DD		 2151 if (! ((section->flags & SEC_RELOC) != 0
2152 && section->reloc_count != 0))
2153 continue;
2154 if ((section->flags & SEC_ALLOC) == 0)
e948afaf
AO		 2155 continue;
2156
252b5132
RH		 2157 /* Get cached copy of section contents if it exists. */
2158 if (elf_section_data (section)->this_hdr.contents != NULL)
2159 contents = elf_section_data (section)->this_hdr.contents;
eea6121a 2160 else if (section->size != 0)
252b5132
RH		 2161 {
2162 /* Go get them off disk. */
eea6121a
AM		 2163 if (!bfd_malloc_and_get_section (input_bfd, section,
2164 &contents))
252b5132
RH		 2165 goto error_return;
2166 }
2167 else
6cdc0ccc 2168 contents = NULL;
252b5132
RH		 2169
2170 /* If there aren't any relocs, then there's nothing to do. */
2171 if ((section->flags & SEC_RELOC) != 0
2172 && section->reloc_count != 0)
2173 {
252b5132 2174 /* Get a copy of the native relocations. */
603b7257
NC		 2175 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
2176 NULL, NULL,
2177 link_info->keep_memory);
252b5132
RH		 2178 if (internal_relocs == NULL)
2179 goto error_return;
252b5132
RH		 2180
2181 /* Now examine each relocation. */
2182 irel = internal_relocs;
2183 irelend = irel + section->reloc_count;
2184 for (; irel < irelend; irel++)
2185 {
2186 long r_type;
2187 unsigned long r_index;
2188 unsigned char code;
2189
2190 r_type = ELF32_R_TYPE (irel->r_info);
2191 r_index = ELF32_R_SYM (irel->r_info);
2192
010ac81f 2193 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
252b5132
RH		 2194 goto error_return;
2195
2196 /* We need the name and hash table entry of the target
2197 symbol! */
2198 hash = NULL;
2199 sym = NULL;
2200 sym_sec = NULL;
2201
2202 if (r_index < symtab_hdr->sh_info)
2203 {
2204 /* A local symbol. */
6cdc0ccc 2205 Elf_Internal_Sym *isym;
dc810e39
AM		 2206 struct elf_link_hash_table *elftab;
2207 bfd_size_type amt;
252b5132 2208
6cdc0ccc
AM		 2209 isym = isymbuf + r_index;
2210 if (isym->st_shndx == SHN_UNDEF)
252b5132 2211 sym_sec = bfd_und_section_ptr;
6cdc0ccc 2212 else if (isym->st_shndx == SHN_ABS)
252b5132 2213 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 2214 else if (isym->st_shndx == SHN_COMMON)
252b5132 2215 sym_sec = bfd_com_section_ptr;
9ad5cbcf
AM		 2216 else
2217 sym_sec
2218 = bfd_section_from_elf_index (input_bfd,
6cdc0ccc 2219 isym->st_shndx);
a7c10850 2220
9ad5cbcf
AM		 2221 sym_name
2222 = bfd_elf_string_from_elf_section (input_bfd,
2223 (symtab_hdr
2224 ->sh_link),
6cdc0ccc 2225 isym->st_name);
252b5132
RH		 2226
2227 /* If it isn't a function, then we don't care
2228 about it. */
6cdc0ccc 2229 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
252b5132
RH		 2230 continue;
2231
2232 /* Tack on an ID so we can uniquely identify this
2233 local symbol in the global hash table. */
dc810e39
AM		 2234 amt = strlen (sym_name) + 10;
2235 new_name = bfd_malloc (amt);
bfff1642 2236 if (new_name == NULL)
252b5132
RH		 2237 goto error_return;
2238
f60ca5e3 2239 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 2240 sym_name = new_name;
2241
dc810e39
AM		 2242 elftab = &hash_table->static_hash_table->root;
2243 hash = ((struct elf32_mn10300_link_hash_entry *)
2244 elf_link_hash_lookup (elftab, sym_name,
b34976b6 2245 TRUE, TRUE, FALSE));
252b5132
RH		 2246 free (new_name);
2247 }
2248 else
2249 {
2250 r_index -= symtab_hdr->sh_info;
2251 hash = (struct elf32_mn10300_link_hash_entry *)
2252 elf_sym_hashes (input_bfd)[r_index];
2253 }
2254
eb13e63f
DD		 2255 sym_name = hash->root.root.root.string;
2256 if ((section->flags & SEC_CODE) != 0)
2257 {
2258 /* If this is not a "call" instruction, then we
2259 should convert "call" instructions to "calls"
2260 instructions. */
2261 code = bfd_get_8 (input_bfd,
2262 contents + irel->r_offset - 1);
2263 if (code != 0xdd && code != 0xcd)
2264 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2265 }
252b5132 2266
6cdc0ccc
AM		 2267 /* If this is a jump/call, then bump the
2268 direct_calls counter. Else force "call" to
2269 "calls" conversions. */
252b5132 2270 if (r_type == R_MN10300_PCREL32
03a12831
AO		 2271 || r_type == R_MN10300_PLT32
2272 || r_type == R_MN10300_PLT16
252b5132
RH		 2273 || r_type == R_MN10300_PCREL16)
2274 hash->direct_calls++;
2275 else
2276 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
2277 }
2278 }
2279
2280 /* Now look at the actual contents to get the stack size,
2281 and a list of what registers were saved in the prologue
2282 (ie movm_args). */
2283 if ((section->flags & SEC_CODE) != 0)
2284 {
6cdc0ccc 2285 Elf_Internal_Sym *isym, *isymend;
9ad5cbcf 2286 unsigned int sec_shndx;
6cdc0ccc
AM		 2287 struct elf_link_hash_entry **hashes;
2288 struct elf_link_hash_entry **end_hashes;
2289 unsigned int symcount;
252b5132 2290
9ad5cbcf
AM		 2291 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2292 section);
252b5132 2293
1055df0f
AO		 2294 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2295 - symtab_hdr->sh_info);
2296 hashes = elf_sym_hashes (input_bfd);
2297 end_hashes = hashes + symcount;
2298
252b5132
RH		 2299 /* Look at each function defined in this section and
2300 update info for that function. */
6cdc0ccc
AM		 2301 isymend = isymbuf + symtab_hdr->sh_info;
2302 for (isym = isymbuf; isym < isymend; isym++)
252b5132 2303 {
6cdc0ccc
AM		 2304 if (isym->st_shndx == sec_shndx
2305 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
252b5132 2306 {
dc810e39
AM		 2307 struct elf_link_hash_table *elftab;
2308 bfd_size_type amt;
1055df0f
AO		 2309 struct elf_link_hash_entry **lhashes = hashes;
2310
2311 /* Skip a local symbol if it aliases a
2312 global one. */
2313 for (; lhashes < end_hashes; lhashes++)
2314 {
2315 hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
2316 if ((hash->root.root.type == bfd_link_hash_defined
2317 || hash->root.root.type == bfd_link_hash_defweak)
2318 && hash->root.root.u.def.section == section
2319 && hash->root.type == STT_FUNC
2320 && hash->root.root.u.def.value == isym->st_value)
2321 break;
2322 }
2323 if (lhashes != end_hashes)
2324 continue;
dc810e39 2325
6cdc0ccc 2326 if (isym->st_shndx == SHN_UNDEF)
252b5132 2327 sym_sec = bfd_und_section_ptr;
6cdc0ccc 2328 else if (isym->st_shndx == SHN_ABS)
252b5132 2329 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 2330 else if (isym->st_shndx == SHN_COMMON)
252b5132 2331 sym_sec = bfd_com_section_ptr;
9ad5cbcf
AM		 2332 else
2333 sym_sec
2334 = bfd_section_from_elf_index (input_bfd,
6cdc0ccc 2335 isym->st_shndx);
252b5132 2336
dc810e39
AM		 2337 sym_name = (bfd_elf_string_from_elf_section
2338 (input_bfd, symtab_hdr->sh_link,
6cdc0ccc 2339 isym->st_name));
252b5132
RH		 2340
2341 /* Tack on an ID so we can uniquely identify this
2342 local symbol in the global hash table. */
dc810e39
AM		 2343 amt = strlen (sym_name) + 10;
2344 new_name = bfd_malloc (amt);
bfff1642 2345 if (new_name == NULL)
252b5132
RH		 2346 goto error_return;
2347
f60ca5e3 2348 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 2349 sym_name = new_name;
2350
dc810e39
AM		 2351 elftab = &hash_table->static_hash_table->root;
2352 hash = ((struct elf32_mn10300_link_hash_entry *)
2353 elf_link_hash_lookup (elftab, sym_name,
b34976b6 2354 TRUE, TRUE, FALSE));
252b5132
RH		 2355 free (new_name);
2356 compute_function_info (input_bfd, hash,
6cdc0ccc 2357 isym->st_value, contents);
eb13e63f 2358 hash->value = isym->st_value;
252b5132
RH		 2359 }
2360 }
2361
6cdc0ccc 2362 for (; hashes < end_hashes; hashes++)
252b5132 2363 {
6cdc0ccc 2364 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
9ad5cbcf
AM		 2365 if ((hash->root.root.type == bfd_link_hash_defined
2366 || hash->root.root.type == bfd_link_hash_defweak)
2367 && hash->root.root.u.def.section == section
9bb351fd 2368 && hash->root.type == STT_FUNC)
252b5132
RH		 2369 compute_function_info (input_bfd, hash,
2370 (hash)->root.root.u.def.value,
2371 contents);
2372 }
2373 }
2374
2375 /* Cache or free any memory we allocated for the relocs. */
6cdc0ccc
AM		 2376 if (internal_relocs != NULL
2377 && elf_section_data (section)->relocs != internal_relocs)
2378 free (internal_relocs);
2379 internal_relocs = NULL;
252b5132
RH		 2380
2381 /* Cache or free any memory we allocated for the contents. */
6cdc0ccc
AM		 2382 if (contents != NULL
2383 && elf_section_data (section)->this_hdr.contents != contents)
252b5132
RH		 2384 {
2385 if (! link_info->keep_memory)
6cdc0ccc 2386 free (contents);
252b5132
RH		 2387 else
2388 {
2389 /* Cache the section contents for elf_link_input_bfd. */
2390 elf_section_data (section)->this_hdr.contents = contents;
2391 }
252b5132 2392 }
6cdc0ccc 2393 contents = NULL;
9ad5cbcf
AM		 2394 }
2395
252b5132 2396 /* Cache or free any memory we allocated for the symbols. */
6cdc0ccc
AM		 2397 if (isymbuf != NULL
2398 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132
RH		 2399 {
2400 if (! link_info->keep_memory)
6cdc0ccc 2401 free (isymbuf);
252b5132
RH		 2402 else
2403 {
2404 /* Cache the symbols for elf_link_input_bfd. */
6cdc0ccc 2405 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132 2406 }
252b5132 2407 }
6cdc0ccc 2408 isymbuf = NULL;
252b5132
RH		 2409 }
2410
2411 /* Now iterate on each symbol in the hash table and perform
2412 the final initialization steps on each. */
2413 elf32_mn10300_link_hash_traverse (hash_table,
2414 elf32_mn10300_finish_hash_table_entry,
1055df0f 2415 link_info);
252b5132
RH		 2416 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2417 elf32_mn10300_finish_hash_table_entry,
1055df0f 2418 link_info);
252b5132 2419
eb13e63f
DD		 2420 {
2421 /* This section of code collects all our local symbols, sorts
2422 them by value, and looks for multiple symbols referring to
2423 the same address. For those symbols, the flags are merged.
2424 At this point, the only flag that can be set is
2425 MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
2426 together. */
2427 int static_count = 0, i;
2428 struct elf32_mn10300_link_hash_entry **entries;
2429 struct elf32_mn10300_link_hash_entry **ptr;
2430
2431 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2432 elf32_mn10300_count_hash_table_entries,
2433 &static_count);
2434
603b7257 2435 entries = bfd_malloc (static_count * sizeof (* ptr));
eb13e63f
DD		 2436
2437 ptr = entries;
2438 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2439 elf32_mn10300_list_hash_table_entries,
603b7257 2440 & ptr);
eb13e63f 2441
603b7257 2442 qsort (entries, static_count, sizeof (entries[0]), sort_by_value);
eb13e63f 2443
603b7257 2444 for (i = 0; i < static_count - 1; i++)
eb13e63f
DD		 2445 if (entries[i]->value && entries[i]->value == entries[i+1]->value)
2446 {
2447 int v = entries[i]->flags;
2448 int j;
603b7257
NC		 2449
2450 for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++)
eb13e63f 2451 v |= entries[j]->flags;
603b7257
NC		 2452
2453 for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++)
eb13e63f 2454 entries[j]->flags = v;
603b7257
NC		 2455
2456 i = j - 1;
eb13e63f
DD		 2457 }
2458 }
2459
252b5132
RH		 2460 /* All entries in the hash table are fully initialized. */
2461 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2462
2463 /* Now that everything has been initialized, go through each
2464 code section and delete any prologue insns which will be
2465 redundant because their operations will be performed by
2466 a "call" instruction. */
2467 for (input_bfd = link_info->input_bfds;
2468 input_bfd != NULL;
2469 input_bfd = input_bfd->link_next)
2470 {
9ad5cbcf 2471 /* We're going to need all the local symbols for each bfd. */
252b5132 2472 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6cdc0ccc 2473 if (symtab_hdr->sh_info != 0)
9ad5cbcf 2474 {
6cdc0ccc
AM		 2475 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2476 if (isymbuf == NULL)
2477 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2478 symtab_hdr->sh_info, 0,
2479 NULL, NULL, NULL);
2480 if (isymbuf == NULL)
9ad5cbcf 2481 goto error_return;
010ac81f 2482 }
252b5132
RH		 2483
2484 /* Walk over each section in this bfd. */
2485 for (section = input_bfd->sections;
2486 section != NULL;
2487 section = section->next)
2488 {
9ad5cbcf 2489 unsigned int sec_shndx;
6cdc0ccc
AM		 2490 Elf_Internal_Sym *isym, *isymend;
2491 struct elf_link_hash_entry **hashes;
2492 struct elf_link_hash_entry **end_hashes;
2493 unsigned int symcount;
252b5132
RH		 2494
2495 /* Skip non-code sections and empty sections. */
eea6121a 2496 if ((section->flags & SEC_CODE) == 0 || section->size == 0)
252b5132
RH		 2497 continue;
2498
2499 if (section->reloc_count != 0)
2500 {
010ac81f 2501 /* Get a copy of the native relocations. */
603b7257
NC		 2502 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
2503 NULL, NULL,
2504 link_info->keep_memory);
010ac81f
KH		 2505 if (internal_relocs == NULL)
2506 goto error_return;
252b5132
RH		 2507 }
2508
2509 /* Get cached copy of section contents if it exists. */
2510 if (elf_section_data (section)->this_hdr.contents != NULL)
2511 contents = elf_section_data (section)->this_hdr.contents;
2512 else
2513 {
2514 /* Go get them off disk. */
eea6121a
AM		 2515 if (!bfd_malloc_and_get_section (input_bfd, section,
2516 &contents))
252b5132
RH		 2517 goto error_return;
2518 }
2519
9ad5cbcf
AM		 2520 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2521 section);
252b5132
RH		 2522
2523 /* Now look for any function in this section which needs
2524 insns deleted from its prologue. */
6cdc0ccc
AM		 2525 isymend = isymbuf + symtab_hdr->sh_info;
2526 for (isym = isymbuf; isym < isymend; isym++)
252b5132 2527 {
252b5132 2528 struct elf32_mn10300_link_hash_entry *sym_hash;
86033394 2529 asection *sym_sec = NULL;
252b5132 2530 const char *sym_name;
252b5132 2531 char *new_name;
dc810e39
AM		 2532 struct elf_link_hash_table *elftab;
2533 bfd_size_type amt;
252b5132 2534
6cdc0ccc 2535 if (isym->st_shndx != sec_shndx)
252b5132
RH		 2536 continue;
2537
6cdc0ccc 2538 if (isym->st_shndx == SHN_UNDEF)
252b5132 2539 sym_sec = bfd_und_section_ptr;
6cdc0ccc 2540 else if (isym->st_shndx == SHN_ABS)
252b5132 2541 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 2542 else if (isym->st_shndx == SHN_COMMON)
252b5132 2543 sym_sec = bfd_com_section_ptr;
86033394 2544 else
9ad5cbcf 2545 sym_sec
6cdc0ccc 2546 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
a7c10850 2547
9ad5cbcf
AM		 2548 sym_name
2549 = bfd_elf_string_from_elf_section (input_bfd,
2550 symtab_hdr->sh_link,
6cdc0ccc 2551 isym->st_name);
252b5132
RH		 2552
2553 /* Tack on an ID so we can uniquely identify this
2554 local symbol in the global hash table. */
dc810e39
AM		 2555 amt = strlen (sym_name) + 10;
2556 new_name = bfd_malloc (amt);
bfff1642 2557 if (new_name == NULL)
252b5132 2558 goto error_return;
f60ca5e3 2559 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 2560 sym_name = new_name;
2561
603b7257
NC		 2562 elftab = & hash_table->static_hash_table->root;
2563 sym_hash = (struct elf32_mn10300_link_hash_entry *)
2564 elf_link_hash_lookup (elftab, sym_name,
2565 FALSE, FALSE, FALSE);
252b5132
RH		 2566
2567 free (new_name);
2568 if (sym_hash == NULL)
2569 continue;
2570
9ad5cbcf
AM		 2571 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2572 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
252b5132
RH		 2573 {
2574 int bytes = 0;
2575
2576 /* Note that we've changed things. */
2577 elf_section_data (section)->relocs = internal_relocs;
252b5132 2578 elf_section_data (section)->this_hdr.contents = contents;
6cdc0ccc 2579 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2580
2581 /* Count how many bytes we're going to delete. */
2582 if (sym_hash->movm_args)
2583 bytes += 2;
2584
1a101a42
AM		 2585 if (sym_hash->stack_size > 0)
2586 {
2587 if (sym_hash->stack_size <= 128)
2588 bytes += 3;
2589 else
2590 bytes += 4;
2591 }
252b5132
RH		 2592
2593 /* Note that we've deleted prologue bytes for this
2594 function. */
2595 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2596
2597 /* Actually delete the bytes. */
2598 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2599 section,
6cdc0ccc 2600 isym->st_value,
252b5132
RH		 2601 bytes))
2602 goto error_return;
2603
2604 /* Something changed. Not strictly necessary, but
2605 may lead to more relaxing opportunities. */
b34976b6 2606 *again = TRUE;
252b5132
RH		 2607 }
2608 }
2609
2610 /* Look for any global functions in this section which
2611 need insns deleted from their prologues. */
6cdc0ccc 2612 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
9ad5cbcf 2613 - symtab_hdr->sh_info);
709e685d 2614 hashes = elf_sym_hashes (input_bfd);
6cdc0ccc
AM		 2615 end_hashes = hashes + symcount;
2616 for (; hashes < end_hashes; hashes++)
252b5132 2617 {
252b5132
RH		 2618 struct elf32_mn10300_link_hash_entry *sym_hash;
2619
6cdc0ccc 2620 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
9ad5cbcf
AM		 2621 if ((sym_hash->root.root.type == bfd_link_hash_defined
2622 || sym_hash->root.root.type == bfd_link_hash_defweak)
2623 && sym_hash->root.root.u.def.section == section
2624 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2625 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
252b5132
RH		 2626 {
2627 int bytes = 0;
9ad5cbcf 2628 bfd_vma symval;
252b5132
RH		 2629
2630 /* Note that we've changed things. */
2631 elf_section_data (section)->relocs = internal_relocs;
252b5132 2632 elf_section_data (section)->this_hdr.contents = contents;
6cdc0ccc 2633 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2634
2635 /* Count how many bytes we're going to delete. */
2636 if (sym_hash->movm_args)
2637 bytes += 2;
2638
1a101a42
AM		 2639 if (sym_hash->stack_size > 0)
2640 {
2641 if (sym_hash->stack_size <= 128)
2642 bytes += 3;
2643 else
2644 bytes += 4;
2645 }
252b5132
RH		 2646
2647 /* Note that we've deleted prologue bytes for this
2648 function. */
2649 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2650
2651 /* Actually delete the bytes. */
9ad5cbcf 2652 symval = sym_hash->root.root.u.def.value;
252b5132
RH		 2653 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2654 section,
9ad5cbcf 2655 symval,
252b5132
RH		 2656 bytes))
2657 goto error_return;
2658
2659 /* Something changed. Not strictly necessary, but
2660 may lead to more relaxing opportunities. */
b34976b6 2661 *again = TRUE;
252b5132
RH		 2662 }
2663 }
2664
2665 /* Cache or free any memory we allocated for the relocs. */
6cdc0ccc
AM		 2666 if (internal_relocs != NULL
2667 && elf_section_data (section)->relocs != internal_relocs)
2668 free (internal_relocs);
2669 internal_relocs = NULL;
252b5132
RH		 2670
2671 /* Cache or free any memory we allocated for the contents. */
6cdc0ccc
AM		 2672 if (contents != NULL
2673 && elf_section_data (section)->this_hdr.contents != contents)
252b5132
RH		 2674 {
2675 if (! link_info->keep_memory)
6cdc0ccc 2676 free (contents);
252b5132 2677 else
603b7257
NC		 2678 /* Cache the section contents for elf_link_input_bfd. */
2679 elf_section_data (section)->this_hdr.contents = contents;
252b5132 2680 }
6cdc0ccc 2681 contents = NULL;
9ad5cbcf
AM		 2682 }
2683
252b5132 2684 /* Cache or free any memory we allocated for the symbols. */
6cdc0ccc
AM		 2685 if (isymbuf != NULL
2686 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132
RH		 2687 {
2688 if (! link_info->keep_memory)
6cdc0ccc
AM		 2689 free (isymbuf);
2690 else
603b7257
NC		 2691 /* Cache the symbols for elf_link_input_bfd. */
2692 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132 2693 }
6cdc0ccc 2694 isymbuf = NULL;
252b5132
RH		 2695 }
2696 }
2697
252b5132
RH		 2698 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2699 contents = NULL;
252b5132 2700 internal_relocs = NULL;
6cdc0ccc
AM		 2701 isymbuf = NULL;
2702 /* For error_return. */
2703 section = sec;
252b5132 2704
1049f94e 2705 /* We don't have to do anything for a relocatable link, if
252b5132
RH		 2706 this section does not have relocs, or if this is not a
2707 code section. */
1049f94e 2708 if (link_info->relocatable
252b5132
RH		 2709 || (sec->flags & SEC_RELOC) == 0
2710 || sec->reloc_count == 0
2711 || (sec->flags & SEC_CODE) == 0)
b34976b6 2712 return TRUE;
252b5132 2713
252b5132
RH		 2714 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2715
2716 /* Get a copy of the native relocations. */
603b7257
NC		 2717 internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
2718 link_info->keep_memory);
252b5132
RH		 2719 if (internal_relocs == NULL)
2720 goto error_return;
252b5132 2721
fc91707c
NC		 2722 /* Scan for worst case alignment gap changes. Note that this logic
2723 is not ideal; what we should do is run this scan for every
2724 opcode/address range and adjust accordingly, but that's
2725 expensive. Worst case is that for an alignment of N bytes, we
2726 move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc
2727 all before it. Plus, this still doesn't cover cross-section
2728 jumps with section alignment. */
2729 irelend = internal_relocs + sec->reloc_count;
2730 align_gap_adjustment = 0;
2731 for (irel = internal_relocs; irel < irelend; irel++)
2732 {
2733 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN)
2734 {
2735 bfd_vma adj = 1 << irel->r_addend;
2736 bfd_vma aend = irel->r_offset;
2737
2738 aend = BFD_ALIGN (aend, 1 << irel->r_addend);
e23f1610 2739 adj = 2 * adj - adj - 1;
fc91707c
NC		 2740
2741 /* Record the biggest adjustmnet. Skip any alignment at the
2742 end of our section. */
2743 if (align_gap_adjustment < adj
2744 && aend < sec->output_section->vma + sec->output_offset + sec->size)
2745 align_gap_adjustment = adj;
2746 }
2747 }
2748
252b5132
RH		 2749 /* Walk through them looking for relaxing opportunities. */
2750 irelend = internal_relocs + sec->reloc_count;
2751 for (irel = internal_relocs; irel < irelend; irel++)
2752 {
2753 bfd_vma symval;
2754 struct elf32_mn10300_link_hash_entry *h = NULL;
2755
2756 /* If this isn't something that can be relaxed, then ignore
2757 this reloc. */
2758 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2759 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2760 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2761 continue;
2762
2763 /* Get the section contents if we haven't done so already. */
2764 if (contents == NULL)
2765 {
2766 /* Get cached copy if it exists. */
2767 if (elf_section_data (sec)->this_hdr.contents != NULL)
2768 contents = elf_section_data (sec)->this_hdr.contents;
2769 else
2770 {
2771 /* Go get them off disk. */
eea6121a 2772 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH		 2773 goto error_return;
2774 }
2775 }
2776
b34976b6 2777 /* Read this BFD's symbols if we haven't done so already. */
6cdc0ccc 2778 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
252b5132 2779 {
6cdc0ccc
AM		 2780 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2781 if (isymbuf == NULL)
2782 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2783 symtab_hdr->sh_info, 0,
2784 NULL, NULL, NULL);
2785 if (isymbuf == NULL)
2786 goto error_return;
252b5132
RH		 2787 }
2788
2789 /* Get the value of the symbol referred to by the reloc. */
2790 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2791 {
6cdc0ccc 2792 Elf_Internal_Sym *isym;
86033394 2793 asection *sym_sec = NULL;
252b5132
RH		 2794 const char *sym_name;
2795 char *new_name;
2796
2797 /* A local symbol. */
6cdc0ccc
AM		 2798 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2799 if (isym->st_shndx == SHN_UNDEF)
252b5132 2800 sym_sec = bfd_und_section_ptr;
6cdc0ccc 2801 else if (isym->st_shndx == SHN_ABS)
252b5132 2802 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 2803 else if (isym->st_shndx == SHN_COMMON)
252b5132 2804 sym_sec = bfd_com_section_ptr;
86033394 2805 else
6cdc0ccc 2806 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
a7c10850 2807
252b5132
RH		 2808 sym_name = bfd_elf_string_from_elf_section (abfd,
2809 symtab_hdr->sh_link,
6cdc0ccc 2810 isym->st_name);
252b5132 2811
dd90f1b2
DD		 2812 if ((sym_sec->flags & SEC_MERGE)
2813 && ELF_ST_TYPE (isym->st_info) == STT_SECTION
2814 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
2815 {
281153f3
NC		 2816 symval = isym->st_value + irel->r_addend;
2817 symval = _bfd_merged_section_offset (abfd, & sym_sec,
2818 elf_section_data (sym_sec)->sec_info,
2819 symval);
2820 symval += sym_sec->output_section->vma + sym_sec->output_offset - irel->r_addend;
dd90f1b2
DD		 2821 }
2822 else
bfff1642
NC		 2823 symval = (isym->st_value
2824 + sym_sec->output_section->vma
2825 + sym_sec->output_offset);
603b7257 2826
252b5132
RH		 2827 /* Tack on an ID so we can uniquely identify this
2828 local symbol in the global hash table. */
dc810e39 2829 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
bfff1642 2830 if (new_name == NULL)
252b5132 2831 goto error_return;
f60ca5e3 2832 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 2833 sym_name = new_name;
2834
2835 h = (struct elf32_mn10300_link_hash_entry *)
2836 elf_link_hash_lookup (&hash_table->static_hash_table->root,
b34976b6 2837 sym_name, FALSE, FALSE, FALSE);
252b5132
RH		 2838 free (new_name);
2839 }
2840 else
2841 {
2842 unsigned long indx;
2843
2844 /* An external symbol. */
2845 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2846 h = (struct elf32_mn10300_link_hash_entry *)
2847 (elf_sym_hashes (abfd)[indx]);
2848 BFD_ASSERT (h != NULL);
2849 if (h->root.root.type != bfd_link_hash_defined
2850 && h->root.root.type != bfd_link_hash_defweak)
603b7257
NC		 2851 /* This appears to be a reference to an undefined
2852 symbol. Just ignore it--it will be caught by the
2853 regular reloc processing. */
2854 continue;
252b5132 2855
bfff1642
NC		 2856 /* Check for a reference to a discarded symbol and ignore it. */
2857 if (h->root.root.u.def.section->output_section == NULL)
2858 continue;
2859
252b5132
RH		 2860 symval = (h->root.root.u.def.value
2861 + h->root.root.u.def.section->output_section->vma
2862 + h->root.root.u.def.section->output_offset);
2863 }
2864
2865 /* For simplicity of coding, we are going to modify the section
2866 contents, the section relocs, and the BFD symbol table. We
2867 must tell the rest of the code not to free up this
2868 information. It would be possible to instead create a table
2869 of changes which have to be made, as is done in coff-mips.c;
2870 that would be more work, but would require less memory when
2871 the linker is run. */
2872
2873 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2874 branch/call, also deal with "call" -> "calls" conversions and
2875 insertion of prologue data into "call" instructions. */
03a12831
AO		 2876 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2877 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
252b5132
RH		 2878 {
2879 bfd_vma value = symval;
2880
03a12831
AO		 2881 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2882 && h != NULL
2883 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2884 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2885 && h->root.plt.offset != (bfd_vma) -1)
2886 {
2887 asection * splt;
2888
2889 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2890 ->dynobj, ".plt");
3b36f7e6 2891
03a12831
AO		 2892 value = ((splt->output_section->vma
2893 + splt->output_offset
2894 + h->root.plt.offset)
2895 - (sec->output_section->vma
2896 + sec->output_offset
2897 + irel->r_offset));
2898 }
2899
252b5132
RH		 2900 /* If we've got a "call" instruction that needs to be turned
2901 into a "calls" instruction, do so now. It saves a byte. */
2902 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2903 {
2904 unsigned char code;
2905
2906 /* Get the opcode. */
2907 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2908
2909 /* Make sure we're working with a "call" instruction! */
2910 if (code == 0xdd)
2911 {
2912 /* Note that we've changed the relocs, section contents,
2913 etc. */
2914 elf_section_data (sec)->relocs = internal_relocs;
252b5132 2915 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2916 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2917
2918 /* Fix the opcode. */
2919 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2920 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2921
2922 /* Fix irel->r_offset and irel->r_addend. */
2923 irel->r_offset += 1;
2924 irel->r_addend += 1;
2925
2926 /* Delete one byte of data. */
2927 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2928 irel->r_offset + 3, 1))
2929 goto error_return;
2930
2931 /* That will change things, so, we should relax again.
2932 Note that this is not required, and it may be slow. */
b34976b6 2933 *again = TRUE;
252b5132
RH		 2934 }
2935 }
2936 else if (h)
2937 {
2938 /* We've got a "call" instruction which needs some data
2939 from target function filled in. */
2940 unsigned char code;
2941
2942 /* Get the opcode. */
2943 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2944
2945 /* Insert data from the target function into the "call"
2946 instruction if needed. */
2947 if (code == 0xdd)
2948 {
2949 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2950 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2951 contents + irel->r_offset + 5);
2952 }
2953 }
2954
2955 /* Deal with pc-relative gunk. */
2956 value -= (sec->output_section->vma + sec->output_offset);
2957 value -= irel->r_offset;
2958 value += irel->r_addend;
2959
2960 /* See if the value will fit in 16 bits, note the high value is
2961 0x7fff + 2 as the target will be two bytes closer if we are
2962 able to relax. */
fc91707c
NC		 2963 /* Account for jumps across alignment boundaries using
2964 align_gap_adjustment. */
e23f1610 2965 if ((bfd_signed_vma) value < 0x8001 - (bfd_signed_vma) align_gap_adjustment
fc91707c 2966 && ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment))
252b5132
RH		 2967 {
2968 unsigned char code;
2969
2970 /* Get the opcode. */
2971 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2972
2973 if (code != 0xdc && code != 0xdd && code != 0xff)
2974 continue;
2975
2976 /* Note that we've changed the relocs, section contents, etc. */
2977 elf_section_data (sec)->relocs = internal_relocs;
252b5132 2978 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2979 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2980
2981 /* Fix the opcode. */
2982 if (code == 0xdc)
2983 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2984 else if (code == 0xdd)
2985 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2986 else if (code == 0xff)
2987 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2988
2989 /* Fix the relocation's type. */
2990 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 2991 (ELF32_R_TYPE (irel->r_info)
2992 == (int) R_MN10300_PLT32)
2993 ? R_MN10300_PLT16 :
252b5132
RH		 2994 R_MN10300_PCREL16);
2995
2996 /* Delete two bytes of data. */
2997 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2998 irel->r_offset + 1, 2))
2999 goto error_return;
3000
3001 /* That will change things, so, we should relax again.
3002 Note that this is not required, and it may be slow. */
b34976b6 3003 *again = TRUE;
252b5132
RH		 3004 }
3005 }
3006
3007 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
3008 branch. */
3009 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
3010 {
3011 bfd_vma value = symval;
3012
3013 /* If we've got a "call" instruction that needs to be turned
3014 into a "calls" instruction, do so now. It saves a byte. */
3015 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
3016 {
3017 unsigned char code;
3018
3019 /* Get the opcode. */
3020 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3021
3022 /* Make sure we're working with a "call" instruction! */
3023 if (code == 0xcd)
3024 {
3025 /* Note that we've changed the relocs, section contents,
3026 etc. */
3027 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3028 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3029 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3030
3031 /* Fix the opcode. */
3032 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
3033 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
3034
3035 /* Fix irel->r_offset and irel->r_addend. */
3036 irel->r_offset += 1;
3037 irel->r_addend += 1;
3038
3039 /* Delete one byte of data. */
3040 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3041 irel->r_offset + 1, 1))
3042 goto error_return;
3043
3044 /* That will change things, so, we should relax again.
3045 Note that this is not required, and it may be slow. */
b34976b6 3046 *again = TRUE;
252b5132
RH		 3047 }
3048 }
3049 else if (h)
3050 {
3051 unsigned char code;
3052
3053 /* Get the opcode. */
3054 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3055
3056 /* Insert data from the target function into the "call"
3057 instruction if needed. */
3058 if (code == 0xcd)
3059 {
3060 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
3061 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
3062 contents + irel->r_offset + 3);
3063 }
3064 }
3065
3066 /* Deal with pc-relative gunk. */
3067 value -= (sec->output_section->vma + sec->output_offset);
3068 value -= irel->r_offset;
3069 value += irel->r_addend;
3070
3071 /* See if the value will fit in 8 bits, note the high value is
3072 0x7f + 1 as the target will be one bytes closer if we are
3073 able to relax. */
010ac81f 3074 if ((long) value < 0x80 && (long) value > -0x80)
252b5132
RH		 3075 {
3076 unsigned char code;
3077
3078 /* Get the opcode. */
3079 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3080
3081 if (code != 0xcc)
3082 continue;
3083
3084 /* Note that we've changed the relocs, section contents, etc. */
3085 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3086 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3087 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3088
3089 /* Fix the opcode. */
3090 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
3091
3092 /* Fix the relocation's type. */
3093 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3094 R_MN10300_PCREL8);
3095
3096 /* Delete one byte of data. */
3097 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3098 irel->r_offset + 1, 1))
3099 goto error_return;
3100
3101 /* That will change things, so, we should relax again.
3102 Note that this is not required, and it may be slow. */
b34976b6 3103 *again = TRUE;
252b5132
RH		 3104 }
3105 }
3106
3107 /* Try to eliminate an unconditional 8 bit pc-relative branch
3108 which immediately follows a conditional 8 bit pc-relative
3109 branch around the unconditional branch.
3110
3111 original: new:
3112 bCC lab1 bCC' lab2
3113 bra lab2
3114 lab1: lab1:
3115
252b5132
RH		 3116 This happens when the bCC can't reach lab2 at assembly time,
3117 but due to other relaxations it can reach at link time. */
3118 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
3119 {
3120 Elf_Internal_Rela *nrel;
3121 bfd_vma value = symval;
3122 unsigned char code;
3123
3124 /* Deal with pc-relative gunk. */
3125 value -= (sec->output_section->vma + sec->output_offset);
3126 value -= irel->r_offset;
3127 value += irel->r_addend;
3128
3129 /* Do nothing if this reloc is the last byte in the section. */
eea6121a 3130 if (irel->r_offset == sec->size)
252b5132
RH		 3131 continue;
3132
3133 /* See if the next instruction is an unconditional pc-relative
3134 branch, more often than not this test will fail, so we
3135 test it first to speed things up. */
3136 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
3137 if (code != 0xca)
3138 continue;
3139
3140 /* Also make sure the next relocation applies to the next
3141 instruction and that it's a pc-relative 8 bit branch. */
3142 nrel = irel + 1;
3143 if (nrel == irelend
3144 || irel->r_offset + 2 != nrel->r_offset
3145 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
3146 continue;
3147
3148 /* Make sure our destination immediately follows the
3149 unconditional branch. */
3150 if (symval != (sec->output_section->vma + sec->output_offset
3151 + irel->r_offset + 3))
3152 continue;
3153
3154 /* Now make sure we are a conditional branch. This may not
3155 be necessary, but why take the chance.
3156
3157 Note these checks assume that R_MN10300_PCREL8 relocs
3158 only occur on bCC and bCCx insns. If they occured
3159 elsewhere, we'd need to know the start of this insn
3160 for this check to be accurate. */
3161 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3162 if (code != 0xc0 && code != 0xc1 && code != 0xc2
3163 && code != 0xc3 && code != 0xc4 && code != 0xc5
3164 && code != 0xc6 && code != 0xc7 && code != 0xc8
3165 && code != 0xc9 && code != 0xe8 && code != 0xe9
3166 && code != 0xea && code != 0xeb)
3167 continue;
3168
3169 /* We also have to be sure there is no symbol/label
3170 at the unconditional branch. */
6cdc0ccc
AM		 3171 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
3172 irel->r_offset + 1))
252b5132
RH		 3173 continue;
3174
3175 /* Note that we've changed the relocs, section contents, etc. */
3176 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3177 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3178 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3179
3180 /* Reverse the condition of the first branch. */
3181 switch (code)
3182 {
010ac81f
KH		 3183 case 0xc8:
3184 code = 0xc9;
3185 break;
3186 case 0xc9:
3187 code = 0xc8;
3188 break;
3189 case 0xc0:
3190 code = 0xc2;
3191 break;
3192 case 0xc2:
3193 code = 0xc0;
3194 break;
3195 case 0xc3:
3196 code = 0xc1;
3197 break;
3198 case 0xc1:
3199 code = 0xc3;
3200 break;
3201 case 0xc4:
3202 code = 0xc6;
3203 break;
3204 case 0xc6:
3205 code = 0xc4;
3206 break;
3207 case 0xc7:
3208 code = 0xc5;
3209 break;
3210 case 0xc5:
3211 code = 0xc7;
3212 break;
3213 case 0xe8:
3214 code = 0xe9;
3215 break;
3216 case 0x9d:
3217 code = 0xe8;
3218 break;
3219 case 0xea:
3220 code = 0xeb;
3221 break;
3222 case 0xeb:
3223 code = 0xea;
3224 break;
252b5132
RH		 3225 }
3226 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3227
3228 /* Set the reloc type and symbol for the first branch
3229 from the second branch. */
3230 irel->r_info = nrel->r_info;
3231
3232 /* Make the reloc for the second branch a null reloc. */
3233 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
3234 R_MN10300_NONE);
3235
3236 /* Delete two bytes of data. */
3237 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3238 irel->r_offset + 1, 2))
3239 goto error_return;
3240
3241 /* That will change things, so, we should relax again.
3242 Note that this is not required, and it may be slow. */
b34976b6 3243 *again = TRUE;
252b5132
RH		 3244 }
3245
31f8dc8f
JL		 3246 /* Try to turn a 24 immediate, displacement or absolute address
3247 into a 8 immediate, displacement or absolute address. */
3248 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
3249 {
3250 bfd_vma value = symval;
3251 value += irel->r_addend;
3252
3253 /* See if the value will fit in 8 bits. */
010ac81f 3254 if ((long) value < 0x7f && (long) value > -0x80)
31f8dc8f
JL		 3255 {
3256 unsigned char code;
3257
3258 /* AM33 insns which have 24 operands are 6 bytes long and
3259 will have 0xfd as the first byte. */
3260
3261 /* Get the first opcode. */
3262 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
3263
3264 if (code == 0xfd)
3265 {
010ac81f
KH		 3266 /* Get the second opcode. */
3267 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
31f8dc8f
JL		 3268
3269 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3270 equivalent instructions exists. */
3b36f7e6 3271 if (code != 0x6b && code != 0x7b
31f8dc8f
JL		 3272 && code != 0x8b && code != 0x9b
3273 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3274 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3275 || (code & 0x0f) == 0x0e))
3276 {
3277 /* Not safe if the high bit is on as relaxing may
3b36f7e6
AM		 3278 move the value out of high mem and thus not fit
3279 in a signed 8bit value. This is currently over
3280 conservative. */
31f8dc8f
JL		 3281 if ((value & 0x80) == 0)
3282 {
3283 /* Note that we've changed the relocation contents,
3284 etc. */
3285 elf_section_data (sec)->relocs = internal_relocs;
31f8dc8f 3286 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3287 symtab_hdr->contents = (unsigned char *) isymbuf;
31f8dc8f
JL		 3288
3289 /* Fix the opcode. */
3290 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
3291 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3292
3293 /* Fix the relocation's type. */
010ac81f
KH		 3294 irel->r_info =
3295 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
3296 R_MN10300_8);
31f8dc8f
JL		 3297
3298 /* Delete two bytes of data. */
3299 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3300 irel->r_offset + 1, 2))
3301 goto error_return;
3302
3303 /* That will change things, so, we should relax
3304 again. Note that this is not required, and it
010ac81f 3305 may be slow. */
b34976b6 3306 *again = TRUE;
31f8dc8f
JL		 3307 break;
3308 }
3309 }
31f8dc8f
JL		 3310 }
3311 }
3312 }
252b5132
RH		 3313
3314 /* Try to turn a 32bit immediate, displacement or absolute address
3315 into a 16bit immediate, displacement or absolute address. */
03a12831
AO		 3316 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
3317 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
eb13e63f 3318 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
252b5132
RH		 3319 {
3320 bfd_vma value = symval;
03a12831
AO		 3321
3322 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
3323 {
3324 asection * sgot;
3325
3326 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
3327 ->dynobj, ".got");
3328
3329 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
3330 {
3331 value = sgot->output_offset;
3332
3333 if (h)
3334 value += h->root.got.offset;
3335 else
3336 value += (elf_local_got_offsets
3337 (abfd)[ELF32_R_SYM (irel->r_info)]);
3338 }
3339 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
3340 value -= sgot->output_section->vma;
3341 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
3342 value = (sgot->output_section->vma
3343 - (sec->output_section->vma
3344 + sec->output_offset
3345 + irel->r_offset));
3346 else
3347 abort ();
3348 }
3349
252b5132
RH		 3350 value += irel->r_addend;
3351
31f8dc8f
JL		 3352 /* See if the value will fit in 24 bits.
3353 We allow any 16bit match here. We prune those we can't
3354 handle below. */
010ac81f 3355 if ((long) value < 0x7fffff && (long) value > -0x800000)
31f8dc8f
JL		 3356 {
3357 unsigned char code;
3358
3359 /* AM33 insns which have 32bit operands are 7 bytes long and
3360 will have 0xfe as the first byte. */
3361
3362 /* Get the first opcode. */
3363 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
3364
3365 if (code == 0xfe)
3366 {
3b36f7e6
AM		 3367 /* Get the second opcode. */
3368 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
31f8dc8f
JL		 3369
3370 /* All the am33 32 -> 24 relaxing possibilities. */
3371 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
3372 equivalent instructions exists. */
010ac81f 3373 if (code != 0x6b && code != 0x7b
31f8dc8f 3374 && code != 0x8b && code != 0x9b
03a12831
AO		 3375 && (ELF32_R_TYPE (irel->r_info)
3376 != (int) R_MN10300_GOTPC32)
31f8dc8f
JL		 3377 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
3378 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
3379 || (code & 0x0f) == 0x0e))
3380 {
3381 /* Not safe if the high bit is on as relaxing may
3b36f7e6
AM		 3382 move the value out of high mem and thus not fit
3383 in a signed 16bit value. This is currently over
3384 conservative. */
31f8dc8f
JL		 3385 if ((value & 0x8000) == 0)
3386 {
3387 /* Note that we've changed the relocation contents,
3388 etc. */
3389 elf_section_data (sec)->relocs = internal_relocs;
31f8dc8f 3390 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3391 symtab_hdr->contents = (unsigned char *) isymbuf;
31f8dc8f
JL		 3392
3393 /* Fix the opcode. */
3394 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
3395 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3396
3397 /* Fix the relocation's type. */
010ac81f
KH		 3398 irel->r_info =
3399 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3400 (ELF32_R_TYPE (irel->r_info)
3401 == (int) R_MN10300_GOTOFF32)
3402 ? R_MN10300_GOTOFF24
3403 : (ELF32_R_TYPE (irel->r_info)
3404 == (int) R_MN10300_GOT32)
3405 ? R_MN10300_GOT24 :
010ac81f 3406 R_MN10300_24);
31f8dc8f
JL		 3407
3408 /* Delete one byte of data. */
3409 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3410 irel->r_offset + 3, 1))
3411 goto error_return;
3412
3413 /* That will change things, so, we should relax
3414 again. Note that this is not required, and it
010ac81f 3415 may be slow. */
b34976b6 3416 *again = TRUE;
31f8dc8f
JL		 3417 break;
3418 }
3419 }
31f8dc8f
JL		 3420 }
3421 }
252b5132
RH		 3422
3423 /* See if the value will fit in 16 bits.
3424 We allow any 16bit match here. We prune those we can't
3425 handle below. */
010ac81f 3426 if ((long) value < 0x7fff && (long) value > -0x8000)
252b5132
RH		 3427 {
3428 unsigned char code;
3429
3430 /* Most insns which have 32bit operands are 6 bytes long;
3431 exceptions are pcrel insns and bit insns.
3432
3433 We handle pcrel insns above. We don't bother trying
3434 to handle the bit insns here.
3435
3436 The first byte of the remaining insns will be 0xfc. */
3437
3438 /* Get the first opcode. */
3439 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
3440
3441 if (code != 0xfc)
3442 continue;
3443
3444 /* Get the second opcode. */
3445 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3446
3447 if ((code & 0xf0) < 0x80)
3448 switch (code & 0xf0)
3449 {
3450 /* mov (d32,am),dn -> mov (d32,am),dn
3451 mov dm,(d32,am) -> mov dn,(d32,am)
3452 mov (d32,am),an -> mov (d32,am),an
3453 mov dm,(d32,am) -> mov dn,(d32,am)
3454 movbu (d32,am),dn -> movbu (d32,am),dn
3455 movbu dm,(d32,am) -> movbu dn,(d32,am)
3456 movhu (d32,am),dn -> movhu (d32,am),dn
3457 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3458 case 0x00:
3459 case 0x10:
3460 case 0x20:
3461 case 0x30:
3462 case 0x40:
3463 case 0x50:
3464 case 0x60:
3465 case 0x70:
3466 /* Not safe if the high bit is on as relaxing may
3467 move the value out of high mem and thus not fit
3468 in a signed 16bit value. */
3469 if (code == 0xcc
3470 && (value & 0x8000))
3471 continue;
3472
3473 /* Note that we've changed the relocation contents, etc. */
3474 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3475 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3476 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3477
3478 /* Fix the opcode. */
3479 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3480 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3481
3482 /* Fix the relocation's type. */
3483 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3484 (ELF32_R_TYPE (irel->r_info)
3485 == (int) R_MN10300_GOTOFF32)
3486 ? R_MN10300_GOTOFF16
3487 : (ELF32_R_TYPE (irel->r_info)
3488 == (int) R_MN10300_GOT32)
3489 ? R_MN10300_GOT16
3490 : (ELF32_R_TYPE (irel->r_info)
3491 == (int) R_MN10300_GOTPC32)
3492 ? R_MN10300_GOTPC16 :
252b5132
RH		 3493 R_MN10300_16);
3494
3495 /* Delete two bytes of data. */
3496 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3497 irel->r_offset + 2, 2))
3498 goto error_return;
3499
3500 /* That will change things, so, we should relax again.
3501 Note that this is not required, and it may be slow. */
b34976b6 3502 *again = TRUE;
252b5132
RH		 3503 break;
3504 }
3505 else if ((code & 0xf0) == 0x80
3506 || (code & 0xf0) == 0x90)
3507 switch (code & 0xf3)
3508 {
3509 /* mov dn,(abs32) -> mov dn,(abs16)
3510 movbu dn,(abs32) -> movbu dn,(abs16)
3511 movhu dn,(abs32) -> movhu dn,(abs16) */
3512 case 0x81:
3513 case 0x82:
3514 case 0x83:
3515 /* Note that we've changed the relocation contents, etc. */
3516 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3517 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3518 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3519
3520 if ((code & 0xf3) == 0x81)
3521 code = 0x01 + (code & 0x0c);
3522 else if ((code & 0xf3) == 0x82)
3523 code = 0x02 + (code & 0x0c);
3524 else if ((code & 0xf3) == 0x83)
3525 code = 0x03 + (code & 0x0c);
3526 else
3527 abort ();
3528
3529 /* Fix the opcode. */
3530 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3531
3532 /* Fix the relocation's type. */
3533 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3534 (ELF32_R_TYPE (irel->r_info)
3535 == (int) R_MN10300_GOTOFF32)
3536 ? R_MN10300_GOTOFF16
3537 : (ELF32_R_TYPE (irel->r_info)
3538 == (int) R_MN10300_GOT32)
3539 ? R_MN10300_GOT16
3540 : (ELF32_R_TYPE (irel->r_info)
3541 == (int) R_MN10300_GOTPC32)
3542 ? R_MN10300_GOTPC16 :
252b5132
RH		 3543 R_MN10300_16);
3544
3545 /* The opcode got shorter too, so we have to fix the
3546 addend and offset too! */
3547 irel->r_offset -= 1;
3548
3549 /* Delete three bytes of data. */
3550 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3551 irel->r_offset + 1, 3))
3552 goto error_return;
3553
3554 /* That will change things, so, we should relax again.
3555 Note that this is not required, and it may be slow. */
b34976b6 3556 *again = TRUE;
252b5132
RH		 3557 break;
3558
3559 /* mov am,(abs32) -> mov am,(abs16)
3560 mov am,(d32,sp) -> mov am,(d16,sp)
3561 mov dm,(d32,sp) -> mov dm,(d32,sp)
3562 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3563 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3564 case 0x80:
3565 case 0x90:
3566 case 0x91:
3567 case 0x92:
3568 case 0x93:
2a0fa943
AO		 3569 /* sp-based offsets are zero-extended. */
3570 if (code >= 0x90 && code <= 0x93
bfff1642 3571 && (long) value < 0)
2a0fa943
AO		 3572 continue;
3573
252b5132
RH		 3574 /* Note that we've changed the relocation contents, etc. */
3575 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3576 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3577 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3578
3579 /* Fix the opcode. */
3580 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3581 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3582
3583 /* Fix the relocation's type. */
3584 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3585 (ELF32_R_TYPE (irel->r_info)
3586 == (int) R_MN10300_GOTOFF32)
3587 ? R_MN10300_GOTOFF16
3588 : (ELF32_R_TYPE (irel->r_info)
3589 == (int) R_MN10300_GOT32)
3590 ? R_MN10300_GOT16
3591 : (ELF32_R_TYPE (irel->r_info)
3592 == (int) R_MN10300_GOTPC32)
3593 ? R_MN10300_GOTPC16 :
252b5132
RH		 3594 R_MN10300_16);
3595
3596 /* Delete two bytes of data. */
3597 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3598 irel->r_offset + 2, 2))
3599 goto error_return;
3600
3601 /* That will change things, so, we should relax again.
3602 Note that this is not required, and it may be slow. */
b34976b6 3603 *again = TRUE;
252b5132
RH		 3604 break;
3605 }
3606 else if ((code & 0xf0) < 0xf0)
3607 switch (code & 0xfc)
3608 {
3609 /* mov imm32,dn -> mov imm16,dn
3610 mov imm32,an -> mov imm16,an
3611 mov (abs32),dn -> mov (abs16),dn
3612 movbu (abs32),dn -> movbu (abs16),dn
3613 movhu (abs32),dn -> movhu (abs16),dn */
3614 case 0xcc:
3615 case 0xdc:
3616 case 0xa4:
3617 case 0xa8:
3618 case 0xac:
3619 /* Not safe if the high bit is on as relaxing may
3620 move the value out of high mem and thus not fit
3621 in a signed 16bit value. */
3622 if (code == 0xcc
3623 && (value & 0x8000))
3624 continue;
3625
2a0fa943
AO		 3626 /* mov imm16, an zero-extends the immediate. */
3627 if (code == 0xdc
bfff1642 3628 && (long) value < 0)
2a0fa943
AO		 3629 continue;
3630
252b5132
RH		 3631 /* Note that we've changed the relocation contents, etc. */
3632 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3633 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3634 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3635
3636 if ((code & 0xfc) == 0xcc)
3637 code = 0x2c + (code & 0x03);
3638 else if ((code & 0xfc) == 0xdc)
3639 code = 0x24 + (code & 0x03);
3640 else if ((code & 0xfc) == 0xa4)
3641 code = 0x30 + (code & 0x03);
3642 else if ((code & 0xfc) == 0xa8)
3643 code = 0x34 + (code & 0x03);
3644 else if ((code & 0xfc) == 0xac)
3645 code = 0x38 + (code & 0x03);
3646 else
3647 abort ();
3648
3649 /* Fix the opcode. */
3650 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3651
3652 /* Fix the relocation's type. */
3653 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3654 (ELF32_R_TYPE (irel->r_info)
3655 == (int) R_MN10300_GOTOFF32)
3656 ? R_MN10300_GOTOFF16
3657 : (ELF32_R_TYPE (irel->r_info)
3658 == (int) R_MN10300_GOT32)
3659 ? R_MN10300_GOT16
3660 : (ELF32_R_TYPE (irel->r_info)
3661 == (int) R_MN10300_GOTPC32)
3662 ? R_MN10300_GOTPC16 :
252b5132
RH		 3663 R_MN10300_16);
3664
3665 /* The opcode got shorter too, so we have to fix the
3666 addend and offset too! */
3667 irel->r_offset -= 1;
3668
3669 /* Delete three bytes of data. */
3670 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3671 irel->r_offset + 1, 3))
3672 goto error_return;
3673
3674 /* That will change things, so, we should relax again.
3675 Note that this is not required, and it may be slow. */
b34976b6 3676 *again = TRUE;
252b5132
RH		 3677 break;
3678
3679 /* mov (abs32),an -> mov (abs16),an
2a0fa943
AO		 3680 mov (d32,sp),an -> mov (d16,sp),an
3681 mov (d32,sp),dn -> mov (d16,sp),dn
3682 movbu (d32,sp),dn -> movbu (d16,sp),dn
3683 movhu (d32,sp),dn -> movhu (d16,sp),dn
252b5132
RH		 3684 add imm32,dn -> add imm16,dn
3685 cmp imm32,dn -> cmp imm16,dn
3686 add imm32,an -> add imm16,an
3687 cmp imm32,an -> cmp imm16,an
2a0fa943
AO		 3688 and imm32,dn -> and imm16,dn
3689 or imm32,dn -> or imm16,dn
3690 xor imm32,dn -> xor imm16,dn
3691 btst imm32,dn -> btst imm16,dn */
252b5132
RH		 3692
3693 case 0xa0:
3694 case 0xb0:
3695 case 0xb1:
3696 case 0xb2:
3697 case 0xb3:
3698 case 0xc0:
3699 case 0xc8:
3700
3701 case 0xd0:
3702 case 0xd8:
3703 case 0xe0:
3704 case 0xe1:
3705 case 0xe2:
3706 case 0xe3:
2a0fa943
AO		 3707 /* cmp imm16, an zero-extends the immediate. */
3708 if (code == 0xdc
bfff1642 3709 && (long) value < 0)
2a0fa943
AO		 3710 continue;
3711
3712 /* So do sp-based offsets. */
3713 if (code >= 0xb0 && code <= 0xb3
bfff1642 3714 && (long) value < 0)
2a0fa943
AO		 3715 continue;
3716
252b5132
RH		 3717 /* Note that we've changed the relocation contents, etc. */
3718 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3719 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3720 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3721
3722 /* Fix the opcode. */
3723 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3724 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3725
3726 /* Fix the relocation's type. */
3727 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3728 (ELF32_R_TYPE (irel->r_info)
3729 == (int) R_MN10300_GOTOFF32)
3730 ? R_MN10300_GOTOFF16
3731 : (ELF32_R_TYPE (irel->r_info)
3732 == (int) R_MN10300_GOT32)
3733 ? R_MN10300_GOT16
3734 : (ELF32_R_TYPE (irel->r_info)
3735 == (int) R_MN10300_GOTPC32)
3736 ? R_MN10300_GOTPC16 :
252b5132
RH		 3737 R_MN10300_16);
3738
3739 /* Delete two bytes of data. */
3740 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3741 irel->r_offset + 2, 2))
3742 goto error_return;
3743
3744 /* That will change things, so, we should relax again.
3745 Note that this is not required, and it may be slow. */
b34976b6 3746 *again = TRUE;
252b5132
RH		 3747 break;
3748 }
3749 else if (code == 0xfe)
3750 {
3751 /* add imm32,sp -> add imm16,sp */
3752
3753 /* Note that we've changed the relocation contents, etc. */
3754 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3755 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3756 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3757
3758 /* Fix the opcode. */
3759 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3760 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3761
3762 /* Fix the relocation's type. */
3763 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3764 (ELF32_R_TYPE (irel->r_info)
3765 == (int) R_MN10300_GOT32)
3766 ? R_MN10300_GOT16
3767 : (ELF32_R_TYPE (irel->r_info)
3768 == (int) R_MN10300_GOTOFF32)
3769 ? R_MN10300_GOTOFF16
3770 : (ELF32_R_TYPE (irel->r_info)
3771 == (int) R_MN10300_GOTPC32)
3772 ? R_MN10300_GOTPC16 :
010ac81f 3773 R_MN10300_16);
252b5132
RH		 3774
3775 /* Delete two bytes of data. */
3776 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3777 irel->r_offset + 2, 2))
3778 goto error_return;
3779
3780 /* That will change things, so, we should relax again.
3781 Note that this is not required, and it may be slow. */
b34976b6 3782 *again = TRUE;
252b5132
RH		 3783 break;
3784 }
3785 }
3786 }
3787 }
3788
6cdc0ccc
AM		 3789 if (isymbuf != NULL
3790 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132
RH		 3791 {
3792 if (! link_info->keep_memory)
6cdc0ccc 3793 free (isymbuf);
252b5132
RH		 3794 else
3795 {
6cdc0ccc
AM		 3796 /* Cache the symbols for elf_link_input_bfd. */
3797 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132 3798 }
9ad5cbcf
AM		 3799 }
3800
6cdc0ccc
AM		 3801 if (contents != NULL
3802 && elf_section_data (sec)->this_hdr.contents != contents)
252b5132
RH		 3803 {
3804 if (! link_info->keep_memory)
6cdc0ccc
AM		 3805 free (contents);
3806 else
252b5132 3807 {
6cdc0ccc
AM		 3808 /* Cache the section contents for elf_link_input_bfd. */
3809 elf_section_data (sec)->this_hdr.contents = contents;
252b5132 3810 }
252b5132
RH		 3811 }
3812
6cdc0ccc
AM		 3813 if (internal_relocs != NULL
3814 && elf_section_data (sec)->relocs != internal_relocs)
3815 free (internal_relocs);
3816
b34976b6 3817 return TRUE;
252b5132
RH		 3818
3819 error_return:
6cdc0ccc
AM		 3820 if (isymbuf != NULL
3821 && symtab_hdr->contents != (unsigned char *) isymbuf)
3822 free (isymbuf);
3823 if (contents != NULL
3824 && elf_section_data (section)->this_hdr.contents != contents)
3825 free (contents);
3826 if (internal_relocs != NULL
3827 && elf_section_data (section)->relocs != internal_relocs)
3828 free (internal_relocs);
9ad5cbcf 3829
b34976b6 3830 return FALSE;
252b5132
RH		 3831}
3832
252b5132
RH		 3833/* This is a version of bfd_generic_get_relocated_section_contents
3834 which uses mn10300_elf_relocate_section. */
3835
3836static bfd_byte *
603b7257
NC		 3837mn10300_elf_get_relocated_section_contents (bfd *output_bfd,
3838 struct bfd_link_info *link_info,
3839 struct bfd_link_order *link_order,
3840 bfd_byte *data,
3841 bfd_boolean relocatable,
3842 asymbol **symbols)
252b5132
RH		 3843{
3844 Elf_Internal_Shdr *symtab_hdr;
3845 asection *input_section = link_order->u.indirect.section;
3846 bfd *input_bfd = input_section->owner;
3847 asection **sections = NULL;
3848 Elf_Internal_Rela *internal_relocs = NULL;
6cdc0ccc 3849 Elf_Internal_Sym *isymbuf = NULL;
252b5132
RH		 3850
3851 /* We only need to handle the case of relaxing, or of having a
3852 particular set of section contents, specially. */
1049f94e 3853 if (relocatable
252b5132
RH		 3854 || elf_section_data (input_section)->this_hdr.contents == NULL)
3855 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3856 link_order, data,
1049f94e 3857 relocatable,
252b5132
RH		 3858 symbols);
3859
3860 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3861
3862 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
eea6121a 3863 (size_t) input_section->size);
252b5132
RH		 3864
3865 if ((input_section->flags & SEC_RELOC) != 0
3866 && input_section->reloc_count > 0)
3867 {
252b5132 3868 asection **secpp;
6cdc0ccc 3869 Elf_Internal_Sym *isym, *isymend;
9ad5cbcf 3870 bfd_size_type amt;
252b5132 3871
603b7257
NC		 3872 internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
3873 NULL, NULL, FALSE);
252b5132
RH		 3874 if (internal_relocs == NULL)
3875 goto error_return;
3876
6cdc0ccc
AM		 3877 if (symtab_hdr->sh_info != 0)
3878 {
3879 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3880 if (isymbuf == NULL)
3881 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3882 symtab_hdr->sh_info, 0,
3883 NULL, NULL, NULL);
3884 if (isymbuf == NULL)
3885 goto error_return;
3886 }
252b5132 3887
9ad5cbcf
AM		 3888 amt = symtab_hdr->sh_info;
3889 amt *= sizeof (asection *);
603b7257 3890 sections = bfd_malloc (amt);
9ad5cbcf 3891 if (sections == NULL && amt != 0)
252b5132
RH		 3892 goto error_return;
3893
6cdc0ccc
AM		 3894 isymend = isymbuf + symtab_hdr->sh_info;
3895 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
252b5132
RH		 3896 {
3897 asection *isec;
3898
6cdc0ccc 3899 if (isym->st_shndx == SHN_UNDEF)
252b5132 3900 isec = bfd_und_section_ptr;
6cdc0ccc 3901 else if (isym->st_shndx == SHN_ABS)
252b5132 3902 isec = bfd_abs_section_ptr;
6cdc0ccc 3903 else if (isym->st_shndx == SHN_COMMON)
252b5132
RH		 3904 isec = bfd_com_section_ptr;
3905 else
6cdc0ccc 3906 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
252b5132
RH		 3907
3908 *secpp = isec;
3909 }
3910
3911 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
603b7257
NC		 3912 input_section, data, internal_relocs,
3913 isymbuf, sections))
252b5132
RH		 3914 goto error_return;
3915
3916 if (sections != NULL)
3917 free (sections);
6cdc0ccc
AM		 3918 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3919 free (isymbuf);
252b5132
RH		 3920 if (internal_relocs != elf_section_data (input_section)->relocs)
3921 free (internal_relocs);
252b5132
RH		 3922 }
3923
3924 return data;
3925
3926 error_return:
6cdc0ccc
AM		 3927 if (sections != NULL)
3928 free (sections);
3929 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3930 free (isymbuf);
252b5132
RH		 3931 if (internal_relocs != NULL
3932 && internal_relocs != elf_section_data (input_section)->relocs)
3933 free (internal_relocs);
252b5132
RH		 3934 return NULL;
3935}
3936
3937/* Assorted hash table functions. */
3938
3939/* Initialize an entry in the link hash table. */
3940
3941/* Create an entry in an MN10300 ELF linker hash table. */
3942
3943static struct bfd_hash_entry *
603b7257
NC		 3944elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry,
3945 struct bfd_hash_table *table,
3946 const char *string)
252b5132
RH		 3947{
3948 struct elf32_mn10300_link_hash_entry *ret =
3949 (struct elf32_mn10300_link_hash_entry *) entry;
3950
3951 /* Allocate the structure if it has not already been allocated by a
3952 subclass. */
603b7257
NC		 3953 if (ret == NULL)
3954 ret = (struct elf32_mn10300_link_hash_entry *)
3955 bfd_hash_allocate (table, sizeof (* ret));
3956 if (ret == NULL)
252b5132
RH		 3957 return (struct bfd_hash_entry *) ret;
3958
3959 /* Call the allocation method of the superclass. */
603b7257 3960 ret = (struct elf32_mn10300_link_hash_entry *)
252b5132 3961 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
603b7257
NC		 3962 table, string);
3963 if (ret != NULL)
252b5132
RH		 3964 {
3965 ret->direct_calls = 0;
3966 ret->stack_size = 0;
5354b572 3967 ret->movm_args = 0;
252b5132
RH		 3968 ret->movm_stack_size = 0;
3969 ret->flags = 0;
eb13e63f 3970 ret->value = 0;
252b5132
RH		 3971 }
3972
3973 return (struct bfd_hash_entry *) ret;
3974}
3975
3976/* Create an mn10300 ELF linker hash table. */
3977
3978static struct bfd_link_hash_table *
603b7257 3979elf32_mn10300_link_hash_table_create (bfd *abfd)
252b5132
RH		 3980{
3981 struct elf32_mn10300_link_hash_table *ret;
603b7257 3982 bfd_size_type amt = sizeof (* ret);
252b5132 3983
603b7257
NC		 3984 ret = bfd_malloc (amt);
3985 if (ret == NULL)
252b5132
RH		 3986 return NULL;
3987
66eb6687
AM		 3988 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
3989 elf32_mn10300_link_hash_newfunc,
3990 sizeof (struct elf32_mn10300_link_hash_entry)))
252b5132 3991 {
e2d34d7d 3992 free (ret);
252b5132
RH		 3993 return NULL;
3994 }
3995
3996 ret->flags = 0;
dc810e39 3997 amt = sizeof (struct elf_link_hash_table);
603b7257 3998 ret->static_hash_table = bfd_malloc (amt);
252b5132
RH		 3999 if (ret->static_hash_table == NULL)
4000 {
e2d34d7d 4001 free (ret);
252b5132
RH		 4002 return NULL;
4003 }
4004
66eb6687
AM		 4005 if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
4006 elf32_mn10300_link_hash_newfunc,
4007 sizeof (struct elf32_mn10300_link_hash_entry)))
252b5132 4008 {
e2d34d7d
DJ		 4009 free (ret->static_hash_table);
4010 free (ret);
252b5132
RH		 4011 return NULL;
4012 }
603b7257 4013 return & ret->root.root;
252b5132
RH		 4014}
4015
e2d34d7d
DJ		 4016/* Free an mn10300 ELF linker hash table. */
4017
4018static void
603b7257 4019elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash)
e2d34d7d
DJ		 4020{
4021 struct elf32_mn10300_link_hash_table *ret
4022 = (struct elf32_mn10300_link_hash_table *) hash;
4023
4024 _bfd_generic_link_hash_table_free
4025 ((struct bfd_link_hash_table *) ret->static_hash_table);
4026 _bfd_generic_link_hash_table_free
4027 ((struct bfd_link_hash_table *) ret);
4028}
4029
dc810e39 4030static unsigned long
603b7257 4031elf_mn10300_mach (flagword flags)
252b5132
RH		 4032{
4033 switch (flags & EF_MN10300_MACH)
4034 {
010ac81f
KH		 4035 case E_MN10300_MACH_MN10300:
4036 default:
4037 return bfd_mach_mn10300;
252b5132 4038
010ac81f
KH		 4039 case E_MN10300_MACH_AM33:
4040 return bfd_mach_am33;
b08fa4d3
AO		 4041
4042 case E_MN10300_MACH_AM33_2:
4043 return bfd_mach_am33_2;
252b5132
RH		 4044 }
4045}
4046
4047/* The final processing done just before writing out a MN10300 ELF object
4048 file. This gets the MN10300 architecture right based on the machine
4049 number. */
4050
603b7257
NC		 4051static void
4052_bfd_mn10300_elf_final_write_processing (bfd *abfd,
4053 bfd_boolean linker ATTRIBUTE_UNUSED)
252b5132
RH		 4054{
4055 unsigned long val;
252b5132
RH		 4056
4057 switch (bfd_get_mach (abfd))
4058 {
010ac81f
KH		 4059 default:
4060 case bfd_mach_mn10300:
4061 val = E_MN10300_MACH_MN10300;
4062 break;
4063
4064 case bfd_mach_am33:
4065 val = E_MN10300_MACH_AM33;
4066 break;
b08fa4d3
AO		 4067
4068 case bfd_mach_am33_2:
4069 val = E_MN10300_MACH_AM33_2;
4070 break;
252b5132
RH		 4071 }
4072
4073 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
4074 elf_elfheader (abfd)->e_flags |= val;
4075}
4076
603b7257
NC		 4077static bfd_boolean
4078_bfd_mn10300_elf_object_p (bfd *abfd)
252b5132
RH		 4079{
4080 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
010ac81f 4081 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
b34976b6 4082 return TRUE;
252b5132
RH		 4083}
4084
4085/* Merge backend specific data from an object file to the output
4086 object file when linking. */
4087
603b7257
NC		 4088static bfd_boolean
4089_bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 4090{
4091 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4092 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4093 return TRUE;
252b5132
RH		 4094
4095 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4096 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
4097 {
4098 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3b36f7e6
AM		 4099 bfd_get_mach (ibfd)))
4100 return FALSE;
252b5132
RH		 4101 }
4102
b34976b6 4103 return TRUE;
252b5132
RH		 4104}
4105
603b7257
NC		 4106#define PLT0_ENTRY_SIZE 15
4107#define PLT_ENTRY_SIZE 20
4108#define PIC_PLT_ENTRY_SIZE 24
03a12831
AO		 4109
4110static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
4111{
4112 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
4113 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
4114 0xf0, 0xf4, /* jmp (a0) */
4115};
4116
4117static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
4118{
4119 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
4120 0xf0, 0xf4, /* jmp (a0) */
4121 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4122 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
4123};
4124
4125static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
4126{
4127 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
4128 0xf0, 0xf4, /* jmp (a0) */
4129 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
4130 0xf8, 0x22, 8, /* mov (8,a2),a0 */
4131 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
4132 0xf0, 0xf4, /* jmp (a0) */
4133};
4134
4135/* Return size of the first PLT entry. */
4136#define elf_mn10300_sizeof_plt0(info) \
4137 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
4138
4139/* Return size of a PLT entry. */
4140#define elf_mn10300_sizeof_plt(info) \
4141 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
4142
4143/* Return offset of the PLT0 address in an absolute PLT entry. */
4144#define elf_mn10300_plt_plt0_offset(info) 16
4145
4146/* Return offset of the linker in PLT0 entry. */
4147#define elf_mn10300_plt0_linker_offset(info) 2
4148
4149/* Return offset of the GOT id in PLT0 entry. */
4150#define elf_mn10300_plt0_gotid_offset(info) 9
4151
603b7257 4152/* Return offset of the temporary in PLT entry. */
03a12831
AO		 4153#define elf_mn10300_plt_temp_offset(info) 8
4154
4155/* Return offset of the symbol in PLT entry. */
4156#define elf_mn10300_plt_symbol_offset(info) 2
4157
4158/* Return offset of the relocation in PLT entry. */
4159#define elf_mn10300_plt_reloc_offset(info) 11
4160
4161/* The name of the dynamic interpreter. This is put in the .interp
4162 section. */
4163
4164#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
4165
4166/* Create dynamic sections when linking against a dynamic object. */
4167
4168static bfd_boolean
603b7257 4169_bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
03a12831
AO		 4170{
4171 flagword flags;
4172 asection * s;
9c5bfbb7 4173 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
03a12831
AO		 4174 int ptralign = 0;
4175
4176 switch (bed->s->arch_size)
4177 {
4178 case 32:
4179 ptralign = 2;
4180 break;
4181
4182 case 64:
4183 ptralign = 3;
4184 break;
4185
4186 default:
4187 bfd_set_error (bfd_error_bad_value);
4188 return FALSE;
4189 }
4190
4191 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
4192 .rel[a].bss sections. */
03a12831
AO		 4193 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4194 | SEC_LINKER_CREATED);
4195
3496cb2a
L		 4196 s = bfd_make_section_with_flags (abfd,
4197 (bed->default_use_rela_p
4198 ? ".rela.plt" : ".rel.plt"),
4199 flags | SEC_READONLY);
03a12831 4200 if (s == NULL
03a12831
AO		 4201 || ! bfd_set_section_alignment (abfd, s, ptralign))
4202 return FALSE;
4203
4204 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4205 return FALSE;
4206
4207 {
4208 const char * secname;
4209 char * relname;
4210 flagword secflags;
4211 asection * sec;
4212
4213 for (sec = abfd->sections; sec; sec = sec->next)
4214 {
4215 secflags = bfd_get_section_flags (abfd, sec);
4216 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4217 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4218 continue;
4219
4220 secname = bfd_get_section_name (abfd, sec);
603b7257 4221 relname = bfd_malloc (strlen (secname) + 6);
03a12831
AO		 4222 strcpy (relname, ".rela");
4223 strcat (relname, secname);
4224
3496cb2a
L		 4225 s = bfd_make_section_with_flags (abfd, relname,
4226 flags | SEC_READONLY);
03a12831 4227 if (s == NULL
03a12831
AO		 4228 || ! bfd_set_section_alignment (abfd, s, ptralign))
4229 return FALSE;
4230 }
4231 }
4232
4233 if (bed->want_dynbss)
4234 {
4235 /* The .dynbss section is a place to put symbols which are defined
4236 by dynamic objects, are referenced by regular objects, and are
4237 not functions. We must allocate space for them in the process
4238 image and use a R_*_COPY reloc to tell the dynamic linker to
4239 initialize them at run time. The linker script puts the .dynbss
4240 section into the .bss section of the final image. */
3496cb2a
L		 4241 s = bfd_make_section_with_flags (abfd, ".dynbss",
4242 SEC_ALLOC | SEC_LINKER_CREATED);
4243 if (s == NULL)
03a12831
AO		 4244 return FALSE;
4245
4246 /* The .rel[a].bss section holds copy relocs. This section is not
4247 normally needed. We need to create it here, though, so that the
4248 linker will map it to an output section. We can't just create it
4249 only if we need it, because we will not know whether we need it
4250 until we have seen all the input files, and the first time the
4251 main linker code calls BFD after examining all the input files
4252 (size_dynamic_sections) the input sections have already been
4253 mapped to the output sections. If the section turns out not to
4254 be needed, we can discard it later. We will never need this
4255 section when generating a shared object, since they do not use
4256 copy relocs. */
4257 if (! info->shared)
4258 {
3496cb2a
L		 4259 s = bfd_make_section_with_flags (abfd,
4260 (bed->default_use_rela_p
4261 ? ".rela.bss" : ".rel.bss"),
4262 flags | SEC_READONLY);
03a12831 4263 if (s == NULL
03a12831
AO		 4264 || ! bfd_set_section_alignment (abfd, s, ptralign))
4265 return FALSE;
4266 }
4267 }
4268
4269 return TRUE;
4270}
4271\f
4272/* Adjust a symbol defined by a dynamic object and referenced by a
4273 regular object. The current definition is in some section of the
4274 dynamic object, but we're not including those sections. We have to
4275 change the definition to something the rest of the link can
4276 understand. */
4277
4278static bfd_boolean
603b7257
NC		 4279_bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info,
4280 struct elf_link_hash_entry * h)
03a12831
AO		 4281{
4282 bfd * dynobj;
4283 asection * s;
03a12831
AO		 4284
4285 dynobj = elf_hash_table (info)->dynobj;
4286
4287 /* Make sure we know what is going on here. */
4288 BFD_ASSERT (dynobj != NULL
f5385ebf 4289 && (h->needs_plt
f6e332e6 4290 || h->u.weakdef != NULL
f5385ebf
AM		 4291 || (h->def_dynamic
4292 && h->ref_regular
4293 && !h->def_regular)));
03a12831
AO		 4294
4295 /* If this is a function, put it in the procedure linkage table. We
4296 will fill in the contents of the procedure linkage table later,
4297 when we know the address of the .got section. */
4298 if (h->type == STT_FUNC
f5385ebf 4299 || h->needs_plt)
03a12831
AO		 4300 {
4301 if (! info->shared
f5385ebf
AM		 4302 && !h->def_dynamic
4303 && !h->ref_dynamic)
03a12831
AO		 4304 {
4305 /* This case can occur if we saw a PLT reloc in an input
4306 file, but the symbol was never referred to by a dynamic
4307 object. In such a case, we don't actually need to build
4308 a procedure linkage table, and we can just do a REL32
4309 reloc instead. */
f5385ebf 4310 BFD_ASSERT (h->needs_plt);
03a12831
AO		 4311 return TRUE;
4312 }
4313
4314 /* Make sure this symbol is output as a dynamic symbol. */
4315 if (h->dynindx == -1)
4316 {
c152c796 4317 if (! bfd_elf_link_record_dynamic_symbol (info, h))
03a12831
AO		 4318 return FALSE;
4319 }
4320
4321 s = bfd_get_section_by_name (dynobj, ".plt");
4322 BFD_ASSERT (s != NULL);
4323
4324 /* If this is the first .plt entry, make room for the special
4325 first entry. */
eea6121a
AM		 4326 if (s->size == 0)
4327 s->size += elf_mn10300_sizeof_plt0 (info);
03a12831
AO		 4328
4329 /* If this symbol is not defined in a regular file, and we are
4330 not generating a shared library, then set the symbol to this
4331 location in the .plt. This is required to make function
4332 pointers compare as equal between the normal executable and
4333 the shared library. */
4334 if (! info->shared
f5385ebf 4335 && !h->def_regular)
03a12831
AO		 4336 {
4337 h->root.u.def.section = s;
eea6121a 4338 h->root.u.def.value = s->size;
03a12831
AO		 4339 }
4340
eea6121a 4341 h->plt.offset = s->size;
03a12831
AO		 4342
4343 /* Make room for this entry. */
eea6121a 4344 s->size += elf_mn10300_sizeof_plt (info);
03a12831
AO		 4345
4346 /* We also need to make an entry in the .got.plt section, which
4347 will be placed in the .got section by the linker script. */
03a12831
AO		 4348 s = bfd_get_section_by_name (dynobj, ".got.plt");
4349 BFD_ASSERT (s != NULL);
eea6121a 4350 s->size += 4;
03a12831
AO		 4351
4352 /* We also need to make an entry in the .rela.plt section. */
03a12831
AO		 4353 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4354 BFD_ASSERT (s != NULL);
eea6121a 4355 s->size += sizeof (Elf32_External_Rela);
03a12831
AO		 4356
4357 return TRUE;
4358 }
4359
4360 /* If this is a weak symbol, and there is a real definition, the
4361 processor independent code will have arranged for us to see the
4362 real definition first, and we can just use the same value. */
f6e332e6 4363 if (h->u.weakdef != NULL)
03a12831 4364 {
f6e332e6
AM		 4365 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4366 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4367 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4368 h->root.u.def.value = h->u.weakdef->root.u.def.value;
03a12831
AO		 4369 return TRUE;
4370 }
4371
4372 /* This is a reference to a symbol defined by a dynamic object which
4373 is not a function. */
4374
4375 /* If we are creating a shared library, we must presume that the
4376 only references to the symbol are via the global offset table.
4377 For such cases we need not do anything here; the relocations will
4378 be handled correctly by relocate_section. */
4379 if (info->shared)
4380 return TRUE;
4381
4382 /* If there are no references to this symbol that do not use the
4383 GOT, we don't need to generate a copy reloc. */
f5385ebf 4384 if (!h->non_got_ref)
03a12831
AO		 4385 return TRUE;
4386
909272ee
AM		 4387 if (h->size == 0)
4388 {
4389 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4390 h->root.root.string);
4391 return TRUE;
4392 }
4393
03a12831
AO		 4394 /* We must allocate the symbol in our .dynbss section, which will
4395 become part of the .bss section of the executable. There will be
4396 an entry for this symbol in the .dynsym section. The dynamic
4397 object will contain position independent code, so all references
4398 from the dynamic object to this symbol will go through the global
4399 offset table. The dynamic linker will use the .dynsym entry to
4400 determine the address it must put in the global offset table, so
4401 both the dynamic object and the regular object will refer to the
4402 same memory location for the variable. */
4403
4404 s = bfd_get_section_by_name (dynobj, ".dynbss");
4405 BFD_ASSERT (s != NULL);
4406
4407 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4408 copy the initial value out of the dynamic object and into the
4409 runtime process image. We need to remember the offset into the
4410 .rela.bss section we are going to use. */
4411 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4412 {
4413 asection * srel;
4414
4415 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4416 BFD_ASSERT (srel != NULL);
eea6121a 4417 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 4418 h->needs_copy = 1;
03a12831
AO		 4419 }
4420
027297b7 4421 return _bfd_elf_adjust_dynamic_copy (h, s);
03a12831
AO		 4422}
4423
03a12831
AO		 4424/* Set the sizes of the dynamic sections. */
4425
4426static bfd_boolean
603b7257
NC		 4427_bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd,
4428 struct bfd_link_info * info)
03a12831
AO		 4429{
4430 bfd * dynobj;
4431 asection * s;
4432 bfd_boolean plt;
4433 bfd_boolean relocs;
4434 bfd_boolean reltext;
4435
4436 dynobj = elf_hash_table (info)->dynobj;
4437 BFD_ASSERT (dynobj != NULL);
4438
4439 if (elf_hash_table (info)->dynamic_sections_created)
4440 {
4441 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 4442 if (info->executable)
03a12831
AO		 4443 {
4444 s = bfd_get_section_by_name (dynobj, ".interp");
4445 BFD_ASSERT (s != NULL);
eea6121a 4446 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
03a12831
AO		 4447 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4448 }
4449 }
4450 else
4451 {
4452 /* We may have created entries in the .rela.got section.
4453 However, if we are not creating the dynamic sections, we will
4454 not actually use these entries. Reset the size of .rela.got,
4455 which will cause it to get stripped from the output file
4456 below. */
4457 s = bfd_get_section_by_name (dynobj, ".rela.got");
4458 if (s != NULL)
eea6121a 4459 s->size = 0;
03a12831
AO		 4460 }
4461
03a12831
AO		 4462 /* The check_relocs and adjust_dynamic_symbol entry points have
4463 determined the sizes of the various dynamic sections. Allocate
4464 memory for them. */
4465 plt = FALSE;
4466 relocs = FALSE;
4467 reltext = FALSE;
4468 for (s = dynobj->sections; s != NULL; s = s->next)
4469 {
4470 const char * name;
03a12831
AO		 4471
4472 if ((s->flags & SEC_LINKER_CREATED) == 0)
4473 continue;
4474
4475 /* It's OK to base decisions on the section name, because none
4476 of the dynobj section names depend upon the input files. */
4477 name = bfd_get_section_name (dynobj, s);
4478
603b7257 4479 if (streq (name, ".plt"))
03a12831 4480 {
c456f082
AM		 4481 /* Remember whether there is a PLT. */
4482 plt = s->size != 0;
03a12831 4483 }
0112cd26 4484 else if (CONST_STRNEQ (name, ".rela"))
03a12831 4485 {
c456f082 4486 if (s->size != 0)
03a12831
AO		 4487 {
4488 asection * target;
4489
4490 /* Remember whether there are any reloc sections other
4491 than .rela.plt. */
603b7257 4492 if (! streq (name, ".rela.plt"))
03a12831
AO		 4493 {
4494 const char * outname;
4495
4496 relocs = TRUE;
4497
4498 /* If this relocation section applies to a read only
4499 section, then we probably need a DT_TEXTREL
4500 entry. The entries in the .rela.plt section
4501 really apply to the .got section, which we
4502 created ourselves and so know is not readonly. */
4503 outname = bfd_get_section_name (output_bfd,
4504 s->output_section);
4505 target = bfd_get_section_by_name (output_bfd, outname + 5);
4506 if (target != NULL
4507 && (target->flags & SEC_READONLY) != 0
4508 && (target->flags & SEC_ALLOC) != 0)
4509 reltext = TRUE;
4510 }
4511
4512 /* We use the reloc_count field as a counter if we need
4513 to copy relocs into the output file. */
4514 s->reloc_count = 0;
4515 }
4516 }
0112cd26 4517 else if (! CONST_STRNEQ (name, ".got")
603b7257 4518 && ! streq (name, ".dynbss"))
03a12831
AO		 4519 /* It's not one of our sections, so don't allocate space. */
4520 continue;
4521
c456f082 4522 if (s->size == 0)
03a12831 4523 {
c456f082
AM		 4524 /* If we don't need this section, strip it from the
4525 output file. This is mostly to handle .rela.bss and
4526 .rela.plt. We must create both sections in
4527 create_dynamic_sections, because they must be created
4528 before the linker maps input sections to output
4529 sections. The linker does that before
4530 adjust_dynamic_symbol is called, and it is that
4531 function which decides whether anything needs to go
4532 into these sections. */
8423293d 4533 s->flags |= SEC_EXCLUDE;
03a12831
AO		 4534 continue;
4535 }
4536
c456f082
AM		 4537 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4538 continue;
4539
03a12831
AO		 4540 /* Allocate memory for the section contents. We use bfd_zalloc
4541 here in case unused entries are not reclaimed before the
4542 section's contents are written out. This should not happen,
4543 but this way if it does, we get a R_MN10300_NONE reloc
4544 instead of garbage. */
603b7257 4545 s->contents = bfd_zalloc (dynobj, s->size);
c456f082 4546 if (s->contents == NULL)
03a12831
AO		 4547 return FALSE;
4548 }
4549
4550 if (elf_hash_table (info)->dynamic_sections_created)
4551 {
4552 /* Add some entries to the .dynamic section. We fill in the
4553 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4554 but we must add the entries now so that we get the correct
4555 size for the .dynamic section. The DT_DEBUG entry is filled
4556 in by the dynamic linker and used by the debugger. */
4557 if (! info->shared)
4558 {
5a580b3a 4559 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
03a12831
AO		 4560 return FALSE;
4561 }
4562
4563 if (plt)
4564 {
5a580b3a
AM		 4565 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
4566 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4567 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4568 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
03a12831
AO		 4569 return FALSE;
4570 }
4571
4572 if (relocs)
4573 {
5a580b3a
AM		 4574 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
4575 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
4576 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
4577 sizeof (Elf32_External_Rela)))
03a12831
AO		 4578 return FALSE;
4579 }
4580
4581 if (reltext)
4582 {
5a580b3a 4583 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
03a12831
AO		 4584 return FALSE;
4585 }
4586 }
4587
4588 return TRUE;
4589}
4590
4591/* Finish up dynamic symbol handling. We set the contents of various
4592 dynamic sections here. */
4593
4594static bfd_boolean
603b7257
NC		 4595_bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd,
4596 struct bfd_link_info * info,
4597 struct elf_link_hash_entry * h,
4598 Elf_Internal_Sym * sym)
03a12831
AO		 4599{
4600 bfd * dynobj;
4601
4602 dynobj = elf_hash_table (info)->dynobj;
4603
4604 if (h->plt.offset != (bfd_vma) -1)
4605 {
4606 asection * splt;
4607 asection * sgot;
4608 asection * srel;
4609 bfd_vma plt_index;
4610 bfd_vma got_offset;
4611 Elf_Internal_Rela rel;
4612
4613 /* This symbol has an entry in the procedure linkage table. Set
4614 it up. */
4615
4616 BFD_ASSERT (h->dynindx != -1);
4617
4618 splt = bfd_get_section_by_name (dynobj, ".plt");
4619 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4620 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4621 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4622
4623 /* Get the index in the procedure linkage table which
4624 corresponds to this symbol. This is the index of this symbol
4625 in all the symbols for which we are making plt entries. The
4626 first entry in the procedure linkage table is reserved. */
4627 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4628 / elf_mn10300_sizeof_plt (info));
4629
4630 /* Get the offset into the .got table of the entry that
4631 corresponds to this function. Each .got entry is 4 bytes.
4632 The first three are reserved. */
4633 got_offset = (plt_index + 3) * 4;
4634
4635 /* Fill in the entry in the procedure linkage table. */
4636 if (! info->shared)
4637 {
4638 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4639 elf_mn10300_sizeof_plt (info));
4640 bfd_put_32 (output_bfd,
4641 (sgot->output_section->vma
4642 + sgot->output_offset
4643 + got_offset),
4644 (splt->contents + h->plt.offset
4645 + elf_mn10300_plt_symbol_offset (info)));
4646
4647 bfd_put_32 (output_bfd,
4648 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4649 (splt->contents + h->plt.offset
4650 + elf_mn10300_plt_plt0_offset (info)));
4651 }
4652 else
4653 {
4654 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4655 elf_mn10300_sizeof_plt (info));
4656
4657 bfd_put_32 (output_bfd, got_offset,
4658 (splt->contents + h->plt.offset
4659 + elf_mn10300_plt_symbol_offset (info)));
4660 }
4661
4662 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4663 (splt->contents + h->plt.offset
4664 + elf_mn10300_plt_reloc_offset (info)));
4665
4666 /* Fill in the entry in the global offset table. */
4667 bfd_put_32 (output_bfd,
4668 (splt->output_section->vma
4669 + splt->output_offset
4670 + h->plt.offset
4671 + elf_mn10300_plt_temp_offset (info)),
4672 sgot->contents + got_offset);
4673
4674 /* Fill in the entry in the .rela.plt section. */
4675 rel.r_offset = (sgot->output_section->vma
4676 + sgot->output_offset
4677 + got_offset);
4678 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4679 rel.r_addend = 0;
4680 bfd_elf32_swap_reloca_out (output_bfd, &rel,
560e09e9
NC		 4681 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4682 + plt_index));
03a12831 4683
f5385ebf 4684 if (!h->def_regular)
03a12831
AO		 4685 /* Mark the symbol as undefined, rather than as defined in
4686 the .plt section. Leave the value alone. */
4687 sym->st_shndx = SHN_UNDEF;
4688 }
4689
4690 if (h->got.offset != (bfd_vma) -1)
4691 {
4692 asection * sgot;
4693 asection * srel;
4694 Elf_Internal_Rela rel;
4695
4696 /* This symbol has an entry in the global offset table. Set it up. */
03a12831
AO		 4697 sgot = bfd_get_section_by_name (dynobj, ".got");
4698 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4699 BFD_ASSERT (sgot != NULL && srel != NULL);
4700
4701 rel.r_offset = (sgot->output_section->vma
4702 + sgot->output_offset
603b7257 4703 + (h->got.offset & ~1));
03a12831
AO		 4704
4705 /* If this is a -Bsymbolic link, and the symbol is defined
4706 locally, we just want to emit a RELATIVE reloc. Likewise if
4707 the symbol was forced to be local because of a version file.
4708 The entry in the global offset table will already have been
4709 initialized in the relocate_section function. */
4710 if (info->shared
4711 && (info->symbolic || h->dynindx == -1)
f5385ebf 4712 && h->def_regular)
03a12831
AO		 4713 {
4714 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4715 rel.r_addend = (h->root.u.def.value
4716 + h->root.u.def.section->output_section->vma
4717 + h->root.u.def.section->output_offset);
4718 }
4719 else
4720 {
4721 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4722 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4723 rel.r_addend = 0;
4724 }
4725
4726 bfd_elf32_swap_reloca_out (output_bfd, &rel,
560e09e9
NC		 4727 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4728 + srel->reloc_count));
03a12831
AO		 4729 ++ srel->reloc_count;
4730 }
4731
f5385ebf 4732 if (h->needs_copy)
03a12831
AO		 4733 {
4734 asection * s;
4735 Elf_Internal_Rela rel;
4736
4737 /* This symbol needs a copy reloc. Set it up. */
4738 BFD_ASSERT (h->dynindx != -1
4739 && (h->root.type == bfd_link_hash_defined
4740 || h->root.type == bfd_link_hash_defweak));
4741
4742 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4743 ".rela.bss");
4744 BFD_ASSERT (s != NULL);
4745
4746 rel.r_offset = (h->root.u.def.value
4747 + h->root.u.def.section->output_section->vma
4748 + h->root.u.def.section->output_offset);
4749 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4750 rel.r_addend = 0;
603b7257 4751 bfd_elf32_swap_reloca_out (output_bfd, & rel,
560e09e9
NC		 4752 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4753 + s->reloc_count));
03a12831
AO		 4754 ++ s->reloc_count;
4755 }
4756
4757 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
603b7257 4758 if (streq (h->root.root.string, "_DYNAMIC")
22edb2f1 4759 || h == elf_hash_table (info)->hgot)
03a12831
AO		 4760 sym->st_shndx = SHN_ABS;
4761
4762 return TRUE;
4763}
4764
4765/* Finish up the dynamic sections. */
4766
4767static bfd_boolean
603b7257
NC		 4768_bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd,
4769 struct bfd_link_info * info)
03a12831
AO		 4770{
4771 bfd * dynobj;
4772 asection * sgot;
4773 asection * sdyn;
4774
4775 dynobj = elf_hash_table (info)->dynobj;
4776
4777 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4778 BFD_ASSERT (sgot != NULL);
4779 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4780
4781 if (elf_hash_table (info)->dynamic_sections_created)
4782 {
4783 asection * splt;
4784 Elf32_External_Dyn * dyncon;
4785 Elf32_External_Dyn * dynconend;
4786
4787 BFD_ASSERT (sdyn != NULL);
4788
4789 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4790 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
03a12831
AO		 4791
4792 for (; dyncon < dynconend; dyncon++)
4793 {
4794 Elf_Internal_Dyn dyn;
4795 const char * name;
4796 asection * s;
4797
4798 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4799
4800 switch (dyn.d_tag)
4801 {
4802 default:
4803 break;
4804
4805 case DT_PLTGOT:
4806 name = ".got";
4807 goto get_vma;
4808
4809 case DT_JMPREL:
4810 name = ".rela.plt";
4811 get_vma:
4812 s = bfd_get_section_by_name (output_bfd, name);
4813 BFD_ASSERT (s != NULL);
4814 dyn.d_un.d_ptr = s->vma;
4815 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4816 break;
4817
4818 case DT_PLTRELSZ:
4819 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4820 BFD_ASSERT (s != NULL);
eea6121a 4821 dyn.d_un.d_val = s->size;
03a12831
AO		 4822 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4823 break;
4824
4825 case DT_RELASZ:
4826 /* My reading of the SVR4 ABI indicates that the
4827 procedure linkage table relocs (DT_JMPREL) should be
4828 included in the overall relocs (DT_RELA). This is
4829 what Solaris does. However, UnixWare can not handle
4830 that case. Therefore, we override the DT_RELASZ entry
4831 here to make it not include the JMPREL relocs. Since
4832 the linker script arranges for .rela.plt to follow all
4833 other relocation sections, we don't have to worry
4834 about changing the DT_RELA entry. */
4835 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4836 if (s != NULL)
eea6121a 4837 dyn.d_un.d_val -= s->size;
03a12831
AO		 4838 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4839 break;
4840 }
4841 }
4842
4843 /* Fill in the first entry in the procedure linkage table. */
4844 splt = bfd_get_section_by_name (dynobj, ".plt");
eea6121a 4845 if (splt && splt->size > 0)
03a12831
AO		 4846 {
4847 if (info->shared)
4848 {
4849 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4850 elf_mn10300_sizeof_plt (info));
4851 }
4852 else
4853 {
4854 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4855 bfd_put_32 (output_bfd,
4856 sgot->output_section->vma + sgot->output_offset + 4,
4857 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4858 bfd_put_32 (output_bfd,
4859 sgot->output_section->vma + sgot->output_offset + 8,
4860 splt->contents + elf_mn10300_plt0_linker_offset (info));
4861 }
4862
4863 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4864 really seem like the right value. */
4865 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4866 }
4867 }
4868
4869 /* Fill in the first three entries in the global offset table. */
eea6121a 4870 if (sgot->size > 0)
03a12831
AO		 4871 {
4872 if (sdyn == NULL)
4873 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4874 else
4875 bfd_put_32 (output_bfd,
4876 sdyn->output_section->vma + sdyn->output_offset,
4877 sgot->contents);
4878 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4879 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4880 }
4881
4882 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4883
4884 return TRUE;
4885}
4886
a873f25a
AO		 4887/* Classify relocation types, such that combreloc can sort them
4888 properly. */
4889
4890static enum elf_reloc_type_class
4891_bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4892{
4893 switch ((int) ELF32_R_TYPE (rela->r_info))
4894 {
603b7257
NC		 4895 case R_MN10300_RELATIVE: return reloc_class_relative;
4896 case R_MN10300_JMP_SLOT: return reloc_class_plt;
4897 case R_MN10300_COPY: return reloc_class_copy;
4898 default: return reloc_class_normal;
a873f25a
AO		 4899 }
4900}
4901
73c3cd1c 4902#ifndef ELF_ARCH
252b5132
RH		 4903#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4904#define TARGET_LITTLE_NAME "elf32-mn10300"
4905#define ELF_ARCH bfd_arch_mn10300
6f4514dc
AO		 4906#define ELF_MACHINE_CODE EM_MN10300
4907#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
252b5132 4908#define ELF_MAXPAGESIZE 0x1000
73c3cd1c 4909#endif
252b5132
RH		 4910
4911#define elf_info_to_howto mn10300_info_to_howto
4912#define elf_info_to_howto_rel 0
4913#define elf_backend_can_gc_sections 1
b491616a 4914#define elf_backend_rela_normal 1
252b5132
RH		 4915#define elf_backend_check_relocs mn10300_elf_check_relocs
4916#define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4917#define elf_backend_relocate_section mn10300_elf_relocate_section
4918#define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4919#define bfd_elf32_bfd_get_relocated_section_contents \
4920 mn10300_elf_get_relocated_section_contents
4921#define bfd_elf32_bfd_link_hash_table_create \
4922 elf32_mn10300_link_hash_table_create
e2d34d7d
DJ		 4923#define bfd_elf32_bfd_link_hash_table_free \
4924 elf32_mn10300_link_hash_table_free
252b5132 4925
73c3cd1c 4926#ifndef elf_symbol_leading_char
252b5132 4927#define elf_symbol_leading_char '_'
73c3cd1c 4928#endif
252b5132
RH		 4929
4930/* So we can set bits in e_flags. */
4931#define elf_backend_final_write_processing \
3b36f7e6
AM		 4932 _bfd_mn10300_elf_final_write_processing
4933#define elf_backend_object_p _bfd_mn10300_elf_object_p
252b5132
RH		 4934
4935#define bfd_elf32_bfd_merge_private_bfd_data \
3b36f7e6 4936 _bfd_mn10300_elf_merge_private_bfd_data
252b5132 4937
03a12831
AO		 4938#define elf_backend_can_gc_sections 1
4939#define elf_backend_create_dynamic_sections \
4940 _bfd_mn10300_elf_create_dynamic_sections
4941#define elf_backend_adjust_dynamic_symbol \
4942 _bfd_mn10300_elf_adjust_dynamic_symbol
4943#define elf_backend_size_dynamic_sections \
4944 _bfd_mn10300_elf_size_dynamic_sections
74541ad4
AM		 4945#define elf_backend_omit_section_dynsym \
4946 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
03a12831
AO		 4947#define elf_backend_finish_dynamic_symbol \
4948 _bfd_mn10300_elf_finish_dynamic_symbol
4949#define elf_backend_finish_dynamic_sections \
4950 _bfd_mn10300_elf_finish_dynamic_sections
4951
a873f25a
AO		 4952#define elf_backend_reloc_type_class \
4953 _bfd_mn10300_elf_reloc_type_class
4954
03a12831
AO		 4955#define elf_backend_want_got_plt 1
4956#define elf_backend_plt_readonly 1
4957#define elf_backend_want_plt_sym 0
4958#define elf_backend_got_header_size 12
03a12831 4959
252b5132 4960#include "elf32-target.h"
GDB Binutils - Deliverables
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