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PR 3958
[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
9 the Free Software Foundation; either version 2 of the License, or
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
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132
RH		 20
21#include "bfd.h"
22#include "sysdep.h"
23#include "libbfd.h"
24#include "elf-bfd.h"
25#include "elf/mn10300.h"
26
917583ad
NC		 27static bfd_reloc_status_type mn10300_elf_final_link_relocate
28 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
03a12831
AO		 29 bfd_vma, bfd_vma, bfd_vma,
30 struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *,
917583ad 31 asection *, int));
b34976b6 32static bfd_boolean mn10300_elf_relocate_section
917583ad
NC		 33 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
34 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
b34976b6
AM		 35static bfd_boolean mn10300_elf_relax_section
36 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
917583ad
NC		 37static bfd_byte * mn10300_elf_get_relocated_section_contents
38 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
b34976b6
AM		 39 bfd_byte *, bfd_boolean, asymbol **));
40static unsigned long elf_mn10300_mach
41 PARAMS ((flagword));
42void _bfd_mn10300_elf_final_write_processing
43 PARAMS ((bfd *, bfd_boolean));
44bfd_boolean _bfd_mn10300_elf_object_p
45 PARAMS ((bfd *));
46bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data
47 PARAMS ((bfd *,bfd *));
917583ad 48
03a12831
AO		 49/* The mn10300 linker needs to keep track of the number of relocs that
50 it decides to copy in check_relocs for each symbol. This is so
51 that it can discard PC relative relocs if it doesn't need them when
52 linking with -Bsymbolic. We store the information in a field
53 extending the regular ELF linker hash table. */
54
010ac81f 55struct elf32_mn10300_link_hash_entry {
252b5132
RH		 56 /* The basic elf link hash table entry. */
57 struct elf_link_hash_entry root;
58
59 /* For function symbols, the number of times this function is
60 called directly (ie by name). */
61 unsigned int direct_calls;
62
63 /* For function symbols, the size of this function's stack
64 (if <= 255 bytes). We stuff this into "call" instructions
65 to this target when it's valid and profitable to do so.
66
67 This does not include stack allocated by movm! */
68 unsigned char stack_size;
69
70 /* For function symbols, arguments (if any) for movm instruction
71 in the prologue. We stuff this value into "call" instructions
72 to the target when it's valid and profitable to do so. */
73 unsigned char movm_args;
74
4cc11e76 75 /* For function symbols, the amount of stack space that would be allocated
252b5132
RH		 76 by the movm instruction. This is redundant with movm_args, but we
77 add it to the hash table to avoid computing it over and over. */
78 unsigned char movm_stack_size;
79
80/* When set, convert all "call" instructions to this target into "calls"
81 instructions. */
82#define MN10300_CONVERT_CALL_TO_CALLS 0x1
83
84/* Used to mark functions which have had redundant parts of their
85 prologue deleted. */
86#define MN10300_DELETED_PROLOGUE_BYTES 0x2
87 unsigned char flags;
eb13e63f
DD		 88
89 /* Calculated value. */
90 bfd_vma value;
252b5132
RH		 91};
92
93/* We derive a hash table from the main elf linker hash table so
94 we can store state variables and a secondary hash table without
95 resorting to global variables. */
010ac81f 96struct elf32_mn10300_link_hash_table {
252b5132
RH		 97 /* The main hash table. */
98 struct elf_link_hash_table root;
99
100 /* A hash table for static functions. We could derive a new hash table
101 instead of using the full elf32_mn10300_link_hash_table if we wanted
102 to save some memory. */
103 struct elf32_mn10300_link_hash_table *static_hash_table;
104
105 /* Random linker state flags. */
106#define MN10300_HASH_ENTRIES_INITIALIZED 0x1
107 char flags;
108};
109
110/* For MN10300 linker hash table. */
111
112/* Get the MN10300 ELF linker hash table from a link_info structure. */
113
114#define elf32_mn10300_hash_table(p) \
115 ((struct elf32_mn10300_link_hash_table *) ((p)->hash))
116
117#define elf32_mn10300_link_hash_traverse(table, func, info) \
118 (elf_link_hash_traverse \
119 (&(table)->root, \
b34976b6 120 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
252b5132
RH		 121 (info)))
122
123static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc
124 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
125static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create
126 PARAMS ((bfd *));
e2d34d7d
DJ		 127static void elf32_mn10300_link_hash_table_free
128 PARAMS ((struct bfd_link_hash_table *));
252b5132
RH		 129
130static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
131 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
132static void mn10300_info_to_howto
947216bf 133 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
b34976b6 134static bfd_boolean mn10300_elf_check_relocs
252b5132
RH		 135 PARAMS ((bfd *, struct bfd_link_info *, asection *,
136 const Elf_Internal_Rela *));
b34976b6 137static bfd_boolean mn10300_elf_relax_delete_bytes
252b5132 138 PARAMS ((bfd *, asection *, bfd_vma, int));
b34976b6
AM		 139static bfd_boolean mn10300_elf_symbol_address_p
140 PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma));
141static bfd_boolean elf32_mn10300_finish_hash_table_entry
252b5132
RH		 142 PARAMS ((struct bfd_hash_entry *, PTR));
143static void compute_function_info
144 PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *,
145 bfd_vma, unsigned char *));
146
03a12831
AO		 147static bfd_boolean _bfd_mn10300_elf_create_got_section
148 PARAMS ((bfd *, struct bfd_link_info *));
149static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections
150 PARAMS ((bfd *, struct bfd_link_info *));
151static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol
152 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
03a12831
AO		 153static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections
154 PARAMS ((bfd *, struct bfd_link_info *));
155static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol
156 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
157 Elf_Internal_Sym *));
158static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections
159 PARAMS ((bfd *, struct bfd_link_info *));
160
010ac81f 161static reloc_howto_type elf_mn10300_howto_table[] = {
252b5132
RH		 162 /* Dummy relocation. Does nothing. */
163 HOWTO (R_MN10300_NONE,
164 0,
165 2,
166 16,
b34976b6 167 FALSE,
252b5132
RH		 168 0,
169 complain_overflow_bitfield,
170 bfd_elf_generic_reloc,
171 "R_MN10300_NONE",
b34976b6 172 FALSE,
252b5132
RH		 173 0,
174 0,
b34976b6 175 FALSE),
252b5132
RH		 176 /* Standard 32 bit reloc. */
177 HOWTO (R_MN10300_32,
178 0,
179 2,
180 32,
b34976b6 181 FALSE,
252b5132
RH		 182 0,
183 complain_overflow_bitfield,
184 bfd_elf_generic_reloc,
185 "R_MN10300_32",
b34976b6 186 FALSE,
252b5132
RH		 187 0xffffffff,
188 0xffffffff,
b34976b6 189 FALSE),
252b5132
RH		 190 /* Standard 16 bit reloc. */
191 HOWTO (R_MN10300_16,
192 0,
193 1,
194 16,
b34976b6 195 FALSE,
252b5132
RH		 196 0,
197 complain_overflow_bitfield,
198 bfd_elf_generic_reloc,
199 "R_MN10300_16",
b34976b6 200 FALSE,
252b5132
RH		 201 0xffff,
202 0xffff,
b34976b6 203 FALSE),
252b5132
RH		 204 /* Standard 8 bit reloc. */
205 HOWTO (R_MN10300_8,
206 0,
207 0,
208 8,
b34976b6 209 FALSE,
252b5132
RH		 210 0,
211 complain_overflow_bitfield,
212 bfd_elf_generic_reloc,
213 "R_MN10300_8",
b34976b6 214 FALSE,
252b5132
RH		 215 0xff,
216 0xff,
b34976b6 217 FALSE),
252b5132
RH		 218 /* Standard 32bit pc-relative reloc. */
219 HOWTO (R_MN10300_PCREL32,
220 0,
221 2,
222 32,
b34976b6 223 TRUE,
252b5132
RH		 224 0,
225 complain_overflow_bitfield,
226 bfd_elf_generic_reloc,
227 "R_MN10300_PCREL32",
b34976b6 228 FALSE,
252b5132
RH		 229 0xffffffff,
230 0xffffffff,
b34976b6 231 TRUE),
252b5132
RH		 232 /* Standard 16bit pc-relative reloc. */
233 HOWTO (R_MN10300_PCREL16,
234 0,
235 1,
236 16,
b34976b6 237 TRUE,
252b5132
RH		 238 0,
239 complain_overflow_bitfield,
240 bfd_elf_generic_reloc,
241 "R_MN10300_PCREL16",
b34976b6 242 FALSE,
252b5132
RH		 243 0xffff,
244 0xffff,
b34976b6 245 TRUE),
252b5132
RH		 246 /* Standard 8 pc-relative reloc. */
247 HOWTO (R_MN10300_PCREL8,
248 0,
249 0,
250 8,
b34976b6 251 TRUE,
252b5132
RH		 252 0,
253 complain_overflow_bitfield,
254 bfd_elf_generic_reloc,
255 "R_MN10300_PCREL8",
b34976b6 256 FALSE,
252b5132
RH		 257 0xff,
258 0xff,
b34976b6 259 TRUE),
252b5132
RH		 260
261 /* GNU extension to record C++ vtable hierarchy */
262 HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
263 0, /* rightshift */
264 0, /* size (0 = byte, 1 = short, 2 = long) */
265 0, /* bitsize */
b34976b6 266 FALSE, /* pc_relative */
252b5132
RH		 267 0, /* bitpos */
268 complain_overflow_dont, /* complain_on_overflow */
269 NULL, /* special_function */
270 "R_MN10300_GNU_VTINHERIT", /* name */
b34976b6 271 FALSE, /* partial_inplace */
252b5132
RH		 272 0, /* src_mask */
273 0, /* dst_mask */
b34976b6 274 FALSE), /* pcrel_offset */
252b5132
RH		 275
276 /* GNU extension to record C++ vtable member usage */
277 HOWTO (R_MN10300_GNU_VTENTRY, /* type */
278 0, /* rightshift */
279 0, /* size (0 = byte, 1 = short, 2 = long) */
280 0, /* bitsize */
b34976b6 281 FALSE, /* pc_relative */
252b5132
RH		 282 0, /* bitpos */
283 complain_overflow_dont, /* complain_on_overflow */
284 NULL, /* special_function */
285 "R_MN10300_GNU_VTENTRY", /* name */
b34976b6 286 FALSE, /* partial_inplace */
252b5132
RH		 287 0, /* src_mask */
288 0, /* dst_mask */
b34976b6 289 FALSE), /* pcrel_offset */
252b5132
RH		 290
291 /* Standard 24 bit reloc. */
292 HOWTO (R_MN10300_24,
293 0,
294 2,
295 24,
b34976b6 296 FALSE,
252b5132
RH		 297 0,
298 complain_overflow_bitfield,
299 bfd_elf_generic_reloc,
300 "R_MN10300_24",
b34976b6 301 FALSE,
252b5132
RH		 302 0xffffff,
303 0xffffff,
b34976b6 304 FALSE),
03a12831
AO		 305 HOWTO (R_MN10300_GOTPC32, /* type */
306 0, /* rightshift */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
308 32, /* bitsize */
309 TRUE, /* pc_relative */
310 0, /* bitpos */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* */
313 "R_MN10300_GOTPC32", /* name */
314 FALSE, /* partial_inplace */
315 0xffffffff, /* src_mask */
316 0xffffffff, /* dst_mask */
317 TRUE), /* pcrel_offset */
318
319 HOWTO (R_MN10300_GOTPC16, /* type */
320 0, /* rightshift */
321 1, /* size (0 = byte, 1 = short, 2 = long) */
322 16, /* bitsize */
323 TRUE, /* pc_relative */
324 0, /* bitpos */
325 complain_overflow_bitfield, /* complain_on_overflow */
326 bfd_elf_generic_reloc, /* */
327 "R_MN10300_GOTPC16", /* name */
328 FALSE, /* partial_inplace */
329 0xffff, /* src_mask */
330 0xffff, /* dst_mask */
331 TRUE), /* pcrel_offset */
332
333 HOWTO (R_MN10300_GOTOFF32, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 32, /* bitsize */
337 FALSE, /* pc_relative */
338 0, /* bitpos */
339 complain_overflow_bitfield, /* complain_on_overflow */
340 bfd_elf_generic_reloc, /* */
341 "R_MN10300_GOTOFF32", /* name */
342 FALSE, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE), /* pcrel_offset */
346
347 HOWTO (R_MN10300_GOTOFF24, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 24, /* bitsize */
351 FALSE, /* pc_relative */
352 0, /* bitpos */
353 complain_overflow_bitfield, /* complain_on_overflow */
354 bfd_elf_generic_reloc, /* */
355 "R_MN10300_GOTOFF24", /* name */
356 FALSE, /* partial_inplace */
357 0xffffff, /* src_mask */
358 0xffffff, /* dst_mask */
359 FALSE), /* pcrel_offset */
360
361 HOWTO (R_MN10300_GOTOFF16, /* type */
362 0, /* rightshift */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
365 FALSE, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_bitfield, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* */
369 "R_MN10300_GOTOFF16", /* name */
370 FALSE, /* partial_inplace */
371 0xffff, /* src_mask */
372 0xffff, /* dst_mask */
373 FALSE), /* pcrel_offset */
374
375 HOWTO (R_MN10300_PLT32, /* type */
376 0, /* rightshift */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
378 32, /* bitsize */
379 TRUE, /* pc_relative */
380 0, /* bitpos */
381 complain_overflow_bitfield, /* complain_on_overflow */
382 bfd_elf_generic_reloc, /* */
383 "R_MN10300_PLT32", /* name */
384 FALSE, /* partial_inplace */
385 0xffffffff, /* src_mask */
386 0xffffffff, /* dst_mask */
387 TRUE), /* pcrel_offset */
388
389 HOWTO (R_MN10300_PLT16, /* type */
390 0, /* rightshift */
391 1, /* size (0 = byte, 1 = short, 2 = long) */
392 16, /* bitsize */
393 TRUE, /* pc_relative */
394 0, /* bitpos */
395 complain_overflow_bitfield, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* */
397 "R_MN10300_PLT16", /* name */
398 FALSE, /* partial_inplace */
399 0xffff, /* src_mask */
400 0xffff, /* dst_mask */
401 TRUE), /* pcrel_offset */
402
403 HOWTO (R_MN10300_GOT32, /* type */
404 0, /* rightshift */
405 2, /* size (0 = byte, 1 = short, 2 = long) */
406 32, /* bitsize */
407 FALSE, /* pc_relative */
408 0, /* bitpos */
409 complain_overflow_bitfield, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* */
411 "R_MN10300_GOT32", /* name */
412 FALSE, /* partial_inplace */
413 0xffffffff, /* src_mask */
414 0xffffffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
416
417 HOWTO (R_MN10300_GOT24, /* type */
418 0, /* rightshift */
419 2, /* size (0 = byte, 1 = short, 2 = long) */
420 24, /* bitsize */
421 FALSE, /* pc_relative */
422 0, /* bitpos */
423 complain_overflow_bitfield, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* */
425 "R_MN10300_GOT24", /* name */
426 FALSE, /* partial_inplace */
427 0xffffffff, /* src_mask */
428 0xffffffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
430
431 HOWTO (R_MN10300_GOT16, /* type */
432 0, /* rightshift */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
434 16, /* bitsize */
435 FALSE, /* pc_relative */
436 0, /* bitpos */
437 complain_overflow_bitfield, /* complain_on_overflow */
438 bfd_elf_generic_reloc, /* */
439 "R_MN10300_GOT16", /* name */
440 FALSE, /* partial_inplace */
441 0xffffffff, /* src_mask */
442 0xffffffff, /* dst_mask */
443 FALSE), /* pcrel_offset */
444
445 HOWTO (R_MN10300_COPY, /* type */
446 0, /* rightshift */
447 2, /* size (0 = byte, 1 = short, 2 = long) */
448 32, /* bitsize */
449 FALSE, /* pc_relative */
450 0, /* bitpos */
451 complain_overflow_bitfield, /* complain_on_overflow */
452 bfd_elf_generic_reloc, /* */
453 "R_MN10300_COPY", /* name */
454 FALSE, /* partial_inplace */
455 0xffffffff, /* src_mask */
456 0xffffffff, /* dst_mask */
457 FALSE), /* pcrel_offset */
458
459 HOWTO (R_MN10300_GLOB_DAT, /* type */
460 0, /* rightshift */
461 2, /* size (0 = byte, 1 = short, 2 = long) */
462 32, /* bitsize */
463 FALSE, /* pc_relative */
464 0, /* bitpos */
465 complain_overflow_bitfield, /* complain_on_overflow */
466 bfd_elf_generic_reloc, /* */
467 "R_MN10300_GLOB_DAT", /* name */
468 FALSE, /* partial_inplace */
469 0xffffffff, /* src_mask */
470 0xffffffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
472
473 HOWTO (R_MN10300_JMP_SLOT, /* type */
474 0, /* rightshift */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
476 32, /* bitsize */
477 FALSE, /* pc_relative */
478 0, /* bitpos */
479 complain_overflow_bitfield, /* complain_on_overflow */
480 bfd_elf_generic_reloc, /* */
481 "R_MN10300_JMP_SLOT", /* name */
482 FALSE, /* partial_inplace */
483 0xffffffff, /* src_mask */
484 0xffffffff, /* dst_mask */
485 FALSE), /* pcrel_offset */
486
487 HOWTO (R_MN10300_RELATIVE, /* type */
488 0, /* rightshift */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
490 32, /* bitsize */
491 FALSE, /* pc_relative */
492 0, /* bitpos */
493 complain_overflow_bitfield, /* complain_on_overflow */
494 bfd_elf_generic_reloc, /* */
495 "R_MN10300_RELATIVE", /* name */
496 FALSE, /* partial_inplace */
497 0xffffffff, /* src_mask */
498 0xffffffff, /* dst_mask */
499 FALSE), /* pcrel_offset */
500
252b5132
RH		 501};
502
010ac81f 503struct mn10300_reloc_map {
252b5132
RH		 504 bfd_reloc_code_real_type bfd_reloc_val;
505 unsigned char elf_reloc_val;
506};
507
010ac81f 508static const struct mn10300_reloc_map mn10300_reloc_map[] = {
252b5132
RH		 509 { BFD_RELOC_NONE, R_MN10300_NONE, },
510 { BFD_RELOC_32, R_MN10300_32, },
511 { BFD_RELOC_16, R_MN10300_16, },
512 { BFD_RELOC_8, R_MN10300_8, },
513 { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
514 { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
515 { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
516 { BFD_RELOC_24, R_MN10300_24, },
517 { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
518 { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
03a12831
AO		 519 { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
520 { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
521 { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
522 { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
523 { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
524 { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
525 { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
526 { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
527 { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
528 { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
529 { BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
530 { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
531 { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
532 { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
252b5132
RH		 533};
534
03a12831
AO		 535/* Create the GOT section. */
536
537static bfd_boolean
538_bfd_mn10300_elf_create_got_section (abfd, info)
539 bfd * abfd;
540 struct bfd_link_info * info;
541{
542 flagword flags;
543 flagword pltflags;
544 asection * s;
545 struct elf_link_hash_entry * h;
9c5bfbb7 546 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
03a12831
AO		 547 int ptralign;
548
549 /* This function may be called more than once. */
550 if (bfd_get_section_by_name (abfd, ".got") != NULL)
551 return TRUE;
552
553 switch (bed->s->arch_size)
554 {
555 case 32:
556 ptralign = 2;
557 break;
558
559 case 64:
560 ptralign = 3;
561 break;
562
563 default:
564 bfd_set_error (bfd_error_bad_value);
565 return FALSE;
566 }
567
568 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
569 | SEC_LINKER_CREATED);
570
571 pltflags = flags;
572 pltflags |= SEC_CODE;
573 if (bed->plt_not_loaded)
574 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
575 if (bed->plt_readonly)
576 pltflags |= SEC_READONLY;
577
3496cb2a 578 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
03a12831 579 if (s == NULL
03a12831
AO		 580 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
581 return FALSE;
582
d98685ac
AM		 583 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
584 .plt section. */
7325306f
RS		 585 if (bed->want_plt_sym)
586 {
587 h = _bfd_elf_define_linkage_sym (abfd, info, s,
588 "_PROCEDURE_LINKAGE_TABLE_");
589 elf_hash_table (info)->hplt = h;
590 if (h == NULL)
591 return FALSE;
592 }
03a12831 593
3496cb2a 594 s = bfd_make_section_with_flags (abfd, ".got", flags);
03a12831 595 if (s == NULL
03a12831
AO		 596 || ! bfd_set_section_alignment (abfd, s, ptralign))
597 return FALSE;
598
599 if (bed->want_got_plt)
600 {
3496cb2a 601 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
03a12831 602 if (s == NULL
03a12831
AO		 603 || ! bfd_set_section_alignment (abfd, s, ptralign))
604 return FALSE;
605 }
606
607 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
608 (or .got.plt) section. We don't do this in the linker script
609 because we don't want to define the symbol if we are not creating
610 a global offset table. */
d98685ac 611 h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
03a12831 612 elf_hash_table (info)->hgot = h;
d98685ac
AM		 613 if (h == NULL)
614 return FALSE;
03a12831
AO		 615
616 /* The first bit of the global offset table is the header. */
3b36f7e6 617 s->size += bed->got_header_size;
03a12831
AO		 618
619 return TRUE;
620}
621
252b5132
RH		 622static reloc_howto_type *
623bfd_elf32_bfd_reloc_type_lookup (abfd, code)
5f771d47 624 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 625 bfd_reloc_code_real_type code;
626{
627 unsigned int i;
628
629 for (i = 0;
630 i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map);
631 i++)
632 {
633 if (mn10300_reloc_map[i].bfd_reloc_val == code)
634 return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
635 }
636
637 return NULL;
638}
639
640/* Set the howto pointer for an MN10300 ELF reloc. */
641
642static void
643mn10300_info_to_howto (abfd, cache_ptr, dst)
5f771d47 644 bfd *abfd ATTRIBUTE_UNUSED;
252b5132 645 arelent *cache_ptr;
947216bf 646 Elf_Internal_Rela *dst;
252b5132
RH		 647{
648 unsigned int r_type;
649
650 r_type = ELF32_R_TYPE (dst->r_info);
651 BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
652 cache_ptr->howto = &elf_mn10300_howto_table[r_type];
653}
654
655/* Look through the relocs for a section during the first phase.
656 Since we don't do .gots or .plts, we just need to consider the
657 virtual table relocs for gc. */
658
b34976b6 659static bfd_boolean
252b5132
RH		 660mn10300_elf_check_relocs (abfd, info, sec, relocs)
661 bfd *abfd;
662 struct bfd_link_info *info;
663 asection *sec;
664 const Elf_Internal_Rela *relocs;
665{
666 Elf_Internal_Shdr *symtab_hdr;
667 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
668 const Elf_Internal_Rela *rel;
669 const Elf_Internal_Rela *rel_end;
03a12831
AO		 670 bfd * dynobj;
671 bfd_vma * local_got_offsets;
672 asection * sgot;
673 asection * srelgot;
674 asection * sreloc;
675
676 sgot = NULL;
677 srelgot = NULL;
678 sreloc = NULL;
252b5132 679
1049f94e 680 if (info->relocatable)
b34976b6 681 return TRUE;
252b5132
RH		 682
683 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
684 sym_hashes = elf_sym_hashes (abfd);
a7c10850 685 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
252b5132
RH		 686 if (!elf_bad_symtab (abfd))
687 sym_hashes_end -= symtab_hdr->sh_info;
688
03a12831
AO		 689 dynobj = elf_hash_table (info)->dynobj;
690 local_got_offsets = elf_local_got_offsets (abfd);
252b5132
RH		 691 rel_end = relocs + sec->reloc_count;
692 for (rel = relocs; rel < rel_end; rel++)
693 {
694 struct elf_link_hash_entry *h;
695 unsigned long r_symndx;
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
03a12831
AO		 708 /* Some relocs require a global offset table. */
709 if (dynobj == NULL)
710 {
711 switch (ELF32_R_TYPE (rel->r_info))
712 {
713 case R_MN10300_GOT32:
714 case R_MN10300_GOT24:
715 case R_MN10300_GOT16:
716 case R_MN10300_GOTOFF32:
717 case R_MN10300_GOTOFF24:
718 case R_MN10300_GOTOFF16:
719 case R_MN10300_GOTPC32:
720 case R_MN10300_GOTPC16:
721 elf_hash_table (info)->dynobj = dynobj = abfd;
722 if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
723 return FALSE;
724 break;
725
726 default:
727 break;
728 }
729 }
730
252b5132
RH		 731 switch (ELF32_R_TYPE (rel->r_info))
732 {
733 /* This relocation describes the C++ object vtable hierarchy.
734 Reconstruct it for later use during GC. */
735 case R_MN10300_GNU_VTINHERIT:
c152c796 736 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 737 return FALSE;
252b5132
RH		 738 break;
739
740 /* This relocation describes which C++ vtable entries are actually
741 used. Record for later use during GC. */
742 case R_MN10300_GNU_VTENTRY:
c152c796 743 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 744 return FALSE;
252b5132 745 break;
03a12831
AO		 746 case R_MN10300_GOT32:
747 case R_MN10300_GOT24:
748 case R_MN10300_GOT16:
749 /* This symbol requires a global offset table entry. */
750
751 if (sgot == NULL)
752 {
753 sgot = bfd_get_section_by_name (dynobj, ".got");
754 BFD_ASSERT (sgot != NULL);
755 }
756
757 if (srelgot == NULL
758 && (h != NULL || info->shared))
759 {
760 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
761 if (srelgot == NULL)
762 {
3496cb2a
L		 763 srelgot = bfd_make_section_with_flags (dynobj,
764 ".rela.got",
765 (SEC_ALLOC
766 | SEC_LOAD
767 | SEC_HAS_CONTENTS
768 | SEC_IN_MEMORY
769 | SEC_LINKER_CREATED
770 | SEC_READONLY));
03a12831 771 if (srelgot == NULL
03a12831
AO		 772 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
773 return FALSE;
774 }
775 }
776
777 if (h != NULL)
778 {
779 if (h->got.offset != (bfd_vma) -1)
780 /* We have already allocated space in the .got. */
781 break;
782
eea6121a 783 h->got.offset = sgot->size;
03a12831
AO		 784
785 /* Make sure this symbol is output as a dynamic symbol. */
786 if (h->dynindx == -1)
787 {
c152c796 788 if (! bfd_elf_link_record_dynamic_symbol (info, h))
03a12831
AO		 789 return FALSE;
790 }
791
eea6121a 792 srelgot->size += sizeof (Elf32_External_Rela);
03a12831
AO		 793 }
794 else
795 {
796 /* This is a global offset table entry for a local
3b36f7e6 797 symbol. */
03a12831
AO		 798 if (local_got_offsets == NULL)
799 {
800 size_t size;
801 unsigned int i;
802
803 size = symtab_hdr->sh_info * sizeof (bfd_vma);
804 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
805
806 if (local_got_offsets == NULL)
807 return FALSE;
808 elf_local_got_offsets (abfd) = local_got_offsets;
809
810 for (i = 0; i < symtab_hdr->sh_info; i++)
811 local_got_offsets[i] = (bfd_vma) -1;
812 }
813
814 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
815 /* We have already allocated space in the .got. */
816 break;
817
eea6121a 818 local_got_offsets[r_symndx] = sgot->size;
03a12831
AO		 819
820 if (info->shared)
821 /* If we are generating a shared object, we need to
822 output a R_MN10300_RELATIVE reloc so that the dynamic
823 linker can adjust this GOT entry. */
eea6121a 824 srelgot->size += sizeof (Elf32_External_Rela);
03a12831
AO		 825 }
826
eea6121a 827 sgot->size += 4;
03a12831
AO		 828
829 break;
830
831 case R_MN10300_PLT32:
832 case R_MN10300_PLT16:
833 /* This symbol requires a procedure linkage table entry. We
834 actually build the entry in adjust_dynamic_symbol,
835 because this might be a case of linking PIC code which is
836 never referenced by a dynamic object, in which case we
837 don't need to generate a procedure linkage table entry
838 after all. */
839
840 /* If this is a local symbol, we resolve it directly without
841 creating a procedure linkage table entry. */
842 if (h == NULL)
843 continue;
844
845 if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
846 || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
847 break;
848
f5385ebf 849 h->needs_plt = 1;
03a12831
AO		 850
851 break;
852
03a12831
AO		 853 case R_MN10300_24:
854 case R_MN10300_16:
855 case R_MN10300_8:
856 case R_MN10300_PCREL32:
857 case R_MN10300_PCREL16:
858 case R_MN10300_PCREL8:
859 if (h != NULL)
f5385ebf 860 h->non_got_ref = 1;
146ccdbb 861 break;
03a12831 862
146ccdbb
AO		 863 case R_MN10300_32:
864 if (h != NULL)
f5385ebf 865 h->non_got_ref = 1;
146ccdbb
AO		 866
867 /* If we are creating a shared library, then we need to copy
868 the reloc into the shared library. */
03a12831 869 if (info->shared
146ccdbb 870 && (sec->flags & SEC_ALLOC) != 0)
03a12831
AO		 871 {
872 /* When creating a shared object, we must copy these
873 reloc types into the output file. We create a reloc
874 section in dynobj and make room for this reloc. */
875 if (sreloc == NULL)
876 {
877 const char * name;
878
879 name = (bfd_elf_string_from_elf_section
880 (abfd,
881 elf_elfheader (abfd)->e_shstrndx,
882 elf_section_data (sec)->rel_hdr.sh_name));
883 if (name == NULL)
884 return FALSE;
885
0112cd26 886 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
03a12831
AO		 887 && strcmp (bfd_get_section_name (abfd, sec),
888 name + 5) == 0);
889
890 sreloc = bfd_get_section_by_name (dynobj, name);
891 if (sreloc == NULL)
892 {
893 flagword flags;
894
03a12831
AO		 895 flags = (SEC_HAS_CONTENTS | SEC_READONLY
896 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
897 if ((sec->flags & SEC_ALLOC) != 0)
898 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L		 899 sreloc = bfd_make_section_with_flags (dynobj,
900 name,
901 flags);
03a12831 902 if (sreloc == NULL
03a12831
AO		 903 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
904 return FALSE;
905 }
906 }
907
eea6121a 908 sreloc->size += sizeof (Elf32_External_Rela);
03a12831
AO		 909 }
910
911 break;
252b5132
RH		 912 }
913 }
914
b34976b6 915 return TRUE;
252b5132
RH		 916}
917
918/* Return the section that should be marked against GC for a given
919 relocation. */
920
921static asection *
07adf181
AM		 922mn10300_elf_gc_mark_hook (asection *sec,
923 struct bfd_link_info *info,
924 Elf_Internal_Rela *rel,
925 struct elf_link_hash_entry *h,
926 Elf_Internal_Sym *sym)
252b5132
RH		 927{
928 if (h != NULL)
07adf181
AM		 929 switch (ELF32_R_TYPE (rel->r_info))
930 {
931 case R_MN10300_GNU_VTINHERIT:
932 case R_MN10300_GNU_VTENTRY:
933 return NULL;
934 }
935
936 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 937}
938
939/* Perform a relocation as part of a final link. */
940static bfd_reloc_status_type
941mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
942 input_section, contents, offset, value,
03a12831 943 addend, h, symndx, info, sym_sec, is_local)
252b5132
RH		 944 reloc_howto_type *howto;
945 bfd *input_bfd;
5f771d47 946 bfd *output_bfd ATTRIBUTE_UNUSED;
252b5132
RH		 947 asection *input_section;
948 bfd_byte *contents;
949 bfd_vma offset;
950 bfd_vma value;
951 bfd_vma addend;
03a12831
AO		 952 struct elf_link_hash_entry * h;
953 unsigned long symndx;
eea6121a 954 struct bfd_link_info *info;
5f771d47
ILT		 955 asection *sym_sec ATTRIBUTE_UNUSED;
956 int is_local ATTRIBUTE_UNUSED;
252b5132
RH		 957{
958 unsigned long r_type = howto->type;
959 bfd_byte *hit_data = contents + offset;
03a12831
AO		 960 bfd * dynobj;
961 bfd_vma * local_got_offsets;
962 asection * sgot;
963 asection * splt;
964 asection * sreloc;
965
966 dynobj = elf_hash_table (info)->dynobj;
967 local_got_offsets = elf_local_got_offsets (input_bfd);
968
969 sgot = NULL;
970 splt = NULL;
971 sreloc = NULL;
252b5132 972
146ccdbb
AO		 973 switch (r_type)
974 {
975 case R_MN10300_24:
976 case R_MN10300_16:
977 case R_MN10300_8:
978 case R_MN10300_PCREL8:
979 case R_MN10300_PCREL16:
980 case R_MN10300_PCREL32:
981 case R_MN10300_GOTOFF32:
982 case R_MN10300_GOTOFF24:
983 case R_MN10300_GOTOFF16:
984 if (info->shared
985 && (input_section->flags & SEC_ALLOC) != 0
986 && h != NULL
7e2294f9 987 && ! SYMBOL_REFERENCES_LOCAL (info, h))
146ccdbb
AO		 988 return bfd_reloc_dangerous;
989 }
990
252b5132
RH		 991 switch (r_type)
992 {
993 case R_MN10300_NONE:
994 return bfd_reloc_ok;
995
996 case R_MN10300_32:
03a12831
AO		 997 if (info->shared
998 && (input_section->flags & SEC_ALLOC) != 0)
999 {
1000 Elf_Internal_Rela outrel;
1001 bfd_boolean skip, relocate;
1002
1003 /* When generating a shared object, these relocations are
1004 copied into the output file to be resolved at run
1005 time. */
1006 if (sreloc == NULL)
1007 {
1008 const char * name;
1009
1010 name = (bfd_elf_string_from_elf_section
1011 (input_bfd,
1012 elf_elfheader (input_bfd)->e_shstrndx,
1013 elf_section_data (input_section)->rel_hdr.sh_name));
1014 if (name == NULL)
1015 return FALSE;
1016
0112cd26 1017 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
03a12831
AO		 1018 && strcmp (bfd_get_section_name (input_bfd,
1019 input_section),
1020 name + 5) == 0);
1021
1022 sreloc = bfd_get_section_by_name (dynobj, name);
1023 BFD_ASSERT (sreloc != NULL);
1024 }
1025
1026 skip = FALSE;
1027
eea6121a
AM		 1028 outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
1029 input_section, offset);
1030 if (outrel.r_offset == (bfd_vma) -1)
1031 skip = TRUE;
03a12831
AO		 1032
1033 outrel.r_offset += (input_section->output_section->vma
1034 + input_section->output_offset);
1035
1036 if (skip)
1037 {
1038 memset (&outrel, 0, sizeof outrel);
1039 relocate = FALSE;
1040 }
1041 else
1042 {
1043 /* h->dynindx may be -1 if this symbol was marked to
1044 become local. */
1045 if (h == NULL
7e2294f9 1046 || SYMBOL_REFERENCES_LOCAL (info, h))
03a12831
AO		 1047 {
1048 relocate = TRUE;
1049 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1050 outrel.r_addend = value + addend;
1051 }
1052 else
1053 {
1054 BFD_ASSERT (h->dynindx != -1);
1055 relocate = FALSE;
1056 outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
1057 outrel.r_addend = value + addend;
1058 }
1059 }
1060
1061 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
560e09e9
NC		 1062 (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
1063 + sreloc->reloc_count));
03a12831
AO		 1064 ++sreloc->reloc_count;
1065
1066 /* If this reloc is against an external symbol, we do
1067 not want to fiddle with the addend. Otherwise, we
1068 need to include the symbol value so that it becomes
1069 an addend for the dynamic reloc. */
1070 if (! relocate)
1071 return bfd_reloc_ok;
1072 }
252b5132
RH		 1073 value += addend;
1074 bfd_put_32 (input_bfd, value, hit_data);
1075 return bfd_reloc_ok;
1076
1077 case R_MN10300_24:
1078 value += addend;
1079
010ac81f 1080 if ((long) value > 0x7fffff || (long) value < -0x800000)
252b5132
RH		 1081 return bfd_reloc_overflow;
1082
1083 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1084 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1085 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1086 return bfd_reloc_ok;
1087
1088 case R_MN10300_16:
1089 value += addend;
1090
010ac81f 1091 if ((long) value > 0x7fff || (long) value < -0x8000)
252b5132
RH		 1092 return bfd_reloc_overflow;
1093
1094 bfd_put_16 (input_bfd, value, hit_data);
1095 return bfd_reloc_ok;
1096
1097 case R_MN10300_8:
1098 value += addend;
1099
010ac81f 1100 if ((long) value > 0x7f || (long) value < -0x80)
252b5132
RH		 1101 return bfd_reloc_overflow;
1102
1103 bfd_put_8 (input_bfd, value, hit_data);
1104 return bfd_reloc_ok;
1105
1106 case R_MN10300_PCREL8:
1107 value -= (input_section->output_section->vma
1108 + input_section->output_offset);
1109 value -= offset;
1110 value += addend;
1111
010ac81f 1112 if ((long) value > 0xff || (long) value < -0x100)
252b5132
RH		 1113 return bfd_reloc_overflow;
1114
1115 bfd_put_8 (input_bfd, value, hit_data);
1116 return bfd_reloc_ok;
1117
1118 case R_MN10300_PCREL16:
1119 value -= (input_section->output_section->vma
1120 + input_section->output_offset);
1121 value -= offset;
1122 value += addend;
1123
010ac81f 1124 if ((long) value > 0xffff || (long) value < -0x10000)
252b5132
RH		 1125 return bfd_reloc_overflow;
1126
1127 bfd_put_16 (input_bfd, value, hit_data);
1128 return bfd_reloc_ok;
1129
1130 case R_MN10300_PCREL32:
1131 value -= (input_section->output_section->vma
1132 + input_section->output_offset);
1133 value -= offset;
1134 value += addend;
1135
1136 bfd_put_32 (input_bfd, value, hit_data);
1137 return bfd_reloc_ok;
1138
1139 case R_MN10300_GNU_VTINHERIT:
1140 case R_MN10300_GNU_VTENTRY:
1141 return bfd_reloc_ok;
1142
03a12831
AO		 1143 case R_MN10300_GOTPC32:
1144 /* Use global offset table as symbol value. */
1145
1146 value = bfd_get_section_by_name (dynobj,
1147 ".got")->output_section->vma;
1148 value -= (input_section->output_section->vma
1149 + input_section->output_offset);
1150 value -= offset;
1151 value += addend;
1152
1153 bfd_put_32 (input_bfd, value, hit_data);
1154 return bfd_reloc_ok;
3b36f7e6 1155
03a12831
AO		 1156 case R_MN10300_GOTPC16:
1157 /* Use global offset table as symbol value. */
1158
1159 value = bfd_get_section_by_name (dynobj,
1160 ".got")->output_section->vma;
1161 value -= (input_section->output_section->vma
1162 + input_section->output_offset);
1163 value -= offset;
1164 value += addend;
1165
1166 if ((long) value > 0xffff || (long) value < -0x10000)
1167 return bfd_reloc_overflow;
1168
1169 bfd_put_16 (input_bfd, value, hit_data);
1170 return bfd_reloc_ok;
1171
1172 case R_MN10300_GOTOFF32:
1173 value -= bfd_get_section_by_name (dynobj,
1174 ".got")->output_section->vma;
1175 value += addend;
3b36f7e6 1176
03a12831
AO		 1177 bfd_put_32 (input_bfd, value, hit_data);
1178 return bfd_reloc_ok;
1179
1180 case R_MN10300_GOTOFF24:
1181 value -= bfd_get_section_by_name (dynobj,
1182 ".got")->output_section->vma;
1183 value += addend;
3b36f7e6 1184
03a12831
AO		 1185 if ((long) value > 0x7fffff || (long) value < -0x800000)
1186 return bfd_reloc_overflow;
1187
1188 bfd_put_8 (input_bfd, value, hit_data);
1189 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1190 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1191 return bfd_reloc_ok;
1192
1193 case R_MN10300_GOTOFF16:
1194 value -= bfd_get_section_by_name (dynobj,
1195 ".got")->output_section->vma;
1196 value += addend;
3b36f7e6 1197
03a12831
AO		 1198 if ((long) value > 0xffff || (long) value < -0x10000)
1199 return bfd_reloc_overflow;
1200
1201 bfd_put_16 (input_bfd, value, hit_data);
1202 return bfd_reloc_ok;
1203
1204 case R_MN10300_PLT32:
1205 if (h != NULL
1206 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1207 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1208 && h->plt.offset != (bfd_vma) -1)
1209 {
1210 asection * splt;
1211
1212 splt = bfd_get_section_by_name (dynobj, ".plt");
3b36f7e6 1213
03a12831
AO		 1214 value = (splt->output_section->vma
1215 + splt->output_offset
1216 + h->plt.offset) - value;
1217 }
1218
1219 value -= (input_section->output_section->vma
1220 + input_section->output_offset);
1221 value -= offset;
1222 value += addend;
1223
1224 bfd_put_32 (input_bfd, value, hit_data);
1225 return bfd_reloc_ok;
1226
1227 case R_MN10300_PLT16:
1228 if (h != NULL
1229 && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
1230 && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
1231 && h->plt.offset != (bfd_vma) -1)
1232 {
1233 asection * splt;
1234
1235 splt = bfd_get_section_by_name (dynobj, ".plt");
3b36f7e6 1236
03a12831
AO		 1237 value = (splt->output_section->vma
1238 + splt->output_offset
1239 + h->plt.offset) - value;
1240 }
1241
1242 value -= (input_section->output_section->vma
1243 + input_section->output_offset);
1244 value -= offset;
1245 value += addend;
1246
1247 if ((long) value > 0xffff || (long) value < -0x10000)
1248 return bfd_reloc_overflow;
1249
1250 bfd_put_16 (input_bfd, value, hit_data);
1251 return bfd_reloc_ok;
1252
1253 case R_MN10300_GOT32:
1254 case R_MN10300_GOT24:
1255 case R_MN10300_GOT16:
1256 {
1257 asection * sgot;
1258
1259 sgot = bfd_get_section_by_name (dynobj, ".got");
3b36f7e6 1260
03a12831
AO		 1261 if (h != NULL)
1262 {
1263 bfd_vma off;
1264
1265 off = h->got.offset;
1266 BFD_ASSERT (off != (bfd_vma) -1);
1267
1268 if (! elf_hash_table (info)->dynamic_sections_created
7e2294f9 1269 || SYMBOL_REFERENCES_LOCAL (info, h))
03a12831
AO		 1270 /* This is actually a static link, or it is a
1271 -Bsymbolic link and the symbol is defined
1272 locally, or the symbol was forced to be local
1273 because of a version file. We must initialize
1274 this entry in the global offset table.
1275
1276 When doing a dynamic link, we create a .rela.got
1277 relocation entry to initialize the value. This
1278 is done in the finish_dynamic_symbol routine. */
1279 bfd_put_32 (output_bfd, value,
1280 sgot->contents + off);
1281
1282 value = sgot->output_offset + off;
1283 }
1284 else
1285 {
1286 bfd_vma off;
1287
1288 off = elf_local_got_offsets (input_bfd)[symndx];
1289
1290 bfd_put_32 (output_bfd, value, sgot->contents + off);
1291
1292 if (info->shared)
1293 {
1294 asection * srelgot;
1295 Elf_Internal_Rela outrel;
1296
1297 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1298 BFD_ASSERT (srelgot != NULL);
1299
1300 outrel.r_offset = (sgot->output_section->vma
1301 + sgot->output_offset
1302 + off);
1303 outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
1304 outrel.r_addend = value;
1305 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
560e09e9
NC		 1306 (bfd_byte *) (((Elf32_External_Rela *)
1307 srelgot->contents)
1308 + srelgot->reloc_count));
03a12831
AO		 1309 ++ srelgot->reloc_count;
1310 }
1311
1312 value = sgot->output_offset + off;
1313 }
1314 }
1315
1316 value += addend;
1317
1318 if (r_type == R_MN10300_GOT32)
1319 {
1320 bfd_put_32 (input_bfd, value, hit_data);
1321 return bfd_reloc_ok;
1322 }
1323 else if (r_type == R_MN10300_GOT24)
1324 {
1325 if ((long) value > 0x7fffff || (long) value < -0x800000)
1326 return bfd_reloc_overflow;
1327
1328 bfd_put_8 (input_bfd, value & 0xff, hit_data);
1329 bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
1330 bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
1331 return bfd_reloc_ok;
1332 }
1333 else if (r_type == R_MN10300_GOT16)
1334 {
1335 if ((long) value > 0xffff || (long) value < -0x10000)
1336 return bfd_reloc_overflow;
1337
1338 bfd_put_16 (input_bfd, value, hit_data);
1339 return bfd_reloc_ok;
1340 }
1341 /* Fall through. */
3b36f7e6 1342
252b5132
RH		 1343 default:
1344 return bfd_reloc_notsupported;
1345 }
1346}
252b5132
RH		 1347\f
1348/* Relocate an MN10300 ELF section. */
b34976b6 1349static bfd_boolean
252b5132
RH		 1350mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1351 contents, relocs, local_syms, local_sections)
1352 bfd *output_bfd;
1353 struct bfd_link_info *info;
1354 bfd *input_bfd;
1355 asection *input_section;
1356 bfd_byte *contents;
1357 Elf_Internal_Rela *relocs;
1358 Elf_Internal_Sym *local_syms;
1359 asection **local_sections;
1360{
1361 Elf_Internal_Shdr *symtab_hdr;
b2a8e766 1362 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1363 Elf_Internal_Rela *rel, *relend;
1364
1365 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
b2a8e766 1366 sym_hashes = elf_sym_hashes (input_bfd);
252b5132
RH		 1367
1368 rel = relocs;
1369 relend = relocs + input_section->reloc_count;
1370 for (; rel < relend; rel++)
1371 {
1372 int r_type;
1373 reloc_howto_type *howto;
1374 unsigned long r_symndx;
1375 Elf_Internal_Sym *sym;
1376 asection *sec;
1377 struct elf32_mn10300_link_hash_entry *h;
1378 bfd_vma relocation;
1379 bfd_reloc_status_type r;
1380
1381 r_symndx = ELF32_R_SYM (rel->r_info);
1382 r_type = ELF32_R_TYPE (rel->r_info);
1383 howto = elf_mn10300_howto_table + r_type;
1384
1385 /* Just skip the vtable gc relocs. */
1386 if (r_type == R_MN10300_GNU_VTINHERIT
1387 || r_type == R_MN10300_GNU_VTENTRY)
1388 continue;
1389
252b5132
RH		 1390 h = NULL;
1391 sym = NULL;
1392 sec = NULL;
1393 if (r_symndx < symtab_hdr->sh_info)
1394 {
1395 sym = local_syms + r_symndx;
1396 sec = local_sections[r_symndx];
8517fae7 1397 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 1398 }
1399 else
1400 {
560e09e9
NC		 1401 bfd_boolean unresolved_reloc;
1402 bfd_boolean warned;
1403 struct elf_link_hash_entry *hh;
1404
b2a8e766
AM		 1405 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1406 r_symndx, symtab_hdr, sym_hashes,
1407 hh, sec, relocation,
1408 unresolved_reloc, warned);
560e09e9
NC		 1409
1410 h = (struct elf32_mn10300_link_hash_entry *) hh;
1411
1412 if ((h->root.root.type == bfd_link_hash_defined
252b5132 1413 || h->root.root.type == bfd_link_hash_defweak)
560e09e9 1414 && ( r_type == R_MN10300_GOTPC32
03a12831
AO		 1415 || r_type == R_MN10300_GOTPC16
1416 || (( r_type == R_MN10300_PLT32
1417 || r_type == R_MN10300_PLT16)
1418 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
1419 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
1420 && h->root.plt.offset != (bfd_vma) -1)
1421 || (( r_type == R_MN10300_GOT32
1422 || r_type == R_MN10300_GOT24
1423 || r_type == R_MN10300_GOT16)
1424 && elf_hash_table (info)->dynamic_sections_created
7e2294f9 1425 && !SYMBOL_REFERENCES_LOCAL (info, hh))
146ccdbb 1426 || (r_type == R_MN10300_32
7e2294f9 1427 && !SYMBOL_REFERENCES_LOCAL (info, hh)
03a12831
AO		 1428 && ((input_section->flags & SEC_ALLOC) != 0
1429 /* DWARF will emit R_MN10300_32 relocations
1430 in its sections against symbols defined
1431 externally in shared libraries. We can't
1432 do anything with them here. */
1433 || ((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 1434 && h->root.def_dynamic)))))
560e09e9
NC		 1435 /* In these cases, we don't need the relocation
1436 value. We check specially because in some
1437 obscure cases sec->output_section will be NULL. */
03a12831 1438 relocation = 0;
560e09e9 1439
ab96bf03 1440 else if (!info->relocatable && unresolved_reloc)
560e09e9 1441 (*_bfd_error_handler)
843fe662
L		 1442 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
1443 input_bfd,
1444 input_section,
1445 (long) rel->r_offset,
1446 howto->name,
1447 h->root.root.root.string);
252b5132
RH		 1448 }
1449
ab96bf03
AM		 1450 if (sec != NULL && elf_discarded_section (sec))
1451 {
1452 /* For relocs against symbols from removed linkonce sections,
1453 or sections discarded by a linker script, we just want the
1454 section contents zeroed. Avoid any special processing. */
1455 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1456 rel->r_info = 0;
1457 rel->r_addend = 0;
1458 continue;
1459 }
1460
1461 if (info->relocatable)
1462 continue;
1463
252b5132
RH		 1464 r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
1465 input_section,
1466 contents, rel->r_offset,
1467 relocation, rel->r_addend,
03a12831
AO		 1468 (struct elf_link_hash_entry *)h,
1469 r_symndx,
252b5132
RH		 1470 info, sec, h == NULL);
1471
1472 if (r != bfd_reloc_ok)
1473 {
1474 const char *name;
010ac81f 1475 const char *msg = (const char *) 0;
252b5132
RH		 1476
1477 if (h != NULL)
1478 name = h->root.root.root.string;
1479 else
1480 {
1481 name = (bfd_elf_string_from_elf_section
1482 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1483 if (name == NULL || *name == '\0')
1484 name = bfd_section_name (input_bfd, sec);
1485 }
1486
1487 switch (r)
1488 {
1489 case bfd_reloc_overflow:
1490 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 1491 (info, (h ? &h->root.root : NULL), name,
1492 howto->name, (bfd_vma) 0, input_bfd,
1493 input_section, rel->r_offset)))
b34976b6 1494 return FALSE;
252b5132
RH		 1495 break;
1496
1497 case bfd_reloc_undefined:
1498 if (! ((*info->callbacks->undefined_symbol)
1499 (info, name, input_bfd, input_section,
b34976b6
AM		 1500 rel->r_offset, TRUE)))
1501 return FALSE;
252b5132
RH		 1502 break;
1503
1504 case bfd_reloc_outofrange:
1505 msg = _("internal error: out of range error");
1506 goto common_error;
1507
1508 case bfd_reloc_notsupported:
1509 msg = _("internal error: unsupported relocation error");
1510 goto common_error;
1511
1512 case bfd_reloc_dangerous:
c9b57b7e
DD		 1513 if (r_type == R_MN10300_PCREL32)
1514 msg = _("error: inappropriate relocation type for shared"
1515 " library (did you forget -fpic?)");
1516 else
1517 msg = _("internal error: suspicious relocation type used"
1518 " in shared library");
252b5132
RH		 1519 goto common_error;
1520
1521 default:
1522 msg = _("internal error: unknown error");
1523 /* fall through */
1524
1525 common_error:
1526 if (!((*info->callbacks->warning)
1527 (info, msg, name, input_bfd, input_section,
1528 rel->r_offset)))
b34976b6 1529 return FALSE;
252b5132
RH		 1530 break;
1531 }
1532 }
1533 }
1534
b34976b6 1535 return TRUE;
252b5132
RH		 1536}
1537
1538/* Finish initializing one hash table entry. */
b34976b6 1539static bfd_boolean
252b5132
RH		 1540elf32_mn10300_finish_hash_table_entry (gen_entry, in_args)
1541 struct bfd_hash_entry *gen_entry;
1055df0f 1542 PTR in_args;
252b5132
RH		 1543{
1544 struct elf32_mn10300_link_hash_entry *entry;
1055df0f 1545 struct bfd_link_info *link_info = (struct bfd_link_info *)in_args;
252b5132
RH		 1546 unsigned int byte_count = 0;
1547
010ac81f 1548 entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
252b5132 1549
e92d460e
AM		 1550 if (entry->root.root.type == bfd_link_hash_warning)
1551 entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
1552
252b5132
RH		 1553 /* If we already know we want to convert "call" to "calls" for calls
1554 to this symbol, then return now. */
1555 if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
b34976b6 1556 return TRUE;
252b5132
RH		 1557
1558 /* If there are no named calls to this symbol, or there's nothing we
1055df0f
AO		 1559 can move from the function itself into the "call" instruction,
1560 then note that all "call" instructions should be converted into
1561 "calls" instructions and return. If a symbol is available for
1562 dynamic symbol resolution (overridable or overriding), avoid
1563 custom calling conventions. */
252b5132 1564 if (entry->direct_calls == 0
1055df0f
AO		 1565 || (entry->stack_size == 0 && entry->movm_args == 0)
1566 || (elf_hash_table (link_info)->dynamic_sections_created
1567 && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
1568 && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
252b5132
RH		 1569 {
1570 /* Make a note that we should convert "call" instructions to "calls"
1571 instructions for calls to this symbol. */
1572 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
b34976b6 1573 return TRUE;
252b5132
RH		 1574 }
1575
1576 /* We may be able to move some instructions from the function itself into
1577 the "call" instruction. Count how many bytes we might be able to
1578 eliminate in the function itself. */
1579
1580 /* A movm instruction is two bytes. */
1581 if (entry->movm_args)
1582 byte_count += 2;
1583
1584 /* Count the insn to allocate stack space too. */
1a101a42
AM		 1585 if (entry->stack_size > 0)
1586 {
1587 if (entry->stack_size <= 128)
1588 byte_count += 3;
1589 else
1590 byte_count += 4;
1591 }
252b5132
RH		 1592
1593 /* If using "call" will result in larger code, then turn all
4cc11e76 1594 the associated "call" instructions into "calls" instructions. */
252b5132
RH		 1595 if (byte_count < entry->direct_calls)
1596 entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1597
1598 /* This routine never fails. */
b34976b6 1599 return TRUE;
252b5132
RH		 1600}
1601
eb13e63f
DD		 1602/* Used to count hash table entries. */
1603static bfd_boolean
1604elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED,
1605 PTR in_args)
1606{
1607 int *count = (int *)in_args;
1608
1609 (*count) ++;
1610 return TRUE;
1611}
1612
1613/* Used to enumerate hash table entries into a linear array. */
1614static bfd_boolean
1615elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry,
1616 PTR in_args)
1617{
1618 struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args;
1619
1620 **ptr = gen_entry;
1621 (*ptr) ++;
1622 return TRUE;
1623}
1624
1625/* Used to sort the array created by the above. */
1626static int
1627sort_by_value (const void *va, const void *vb)
1628{
1629 struct elf32_mn10300_link_hash_entry *a
1630 = *(struct elf32_mn10300_link_hash_entry **)va;
1631 struct elf32_mn10300_link_hash_entry *b
1632 = *(struct elf32_mn10300_link_hash_entry **)vb;
1633
1634 return a->value - b->value;
1635}
1636
1637
252b5132
RH		 1638/* This function handles relaxing for the mn10300.
1639
4cc11e76 1640 There are quite a few relaxing opportunities available on the mn10300:
252b5132
RH		 1641
1642 * calls:32 -> calls:16 2 bytes
1643 * call:32 -> call:16 2 bytes
1644
1645 * call:32 -> calls:32 1 byte
1646 * call:16 -> calls:16 1 byte
1647 * These are done anytime using "calls" would result
1648 in smaller code, or when necessary to preserve the
1649 meaning of the program.
1650
1651 * call:32 varies
1652 * call:16
1653 * In some circumstances we can move instructions
1654 from a function prologue into a "call" instruction.
1655 This is only done if the resulting code is no larger
1656 than the original code.
1657
252b5132
RH		 1658 * jmp:32 -> jmp:16 2 bytes
1659 * jmp:16 -> bra:8 1 byte
1660
1661 * If the previous instruction is a conditional branch
1662 around the jump/bra, we may be able to reverse its condition
1663 and change its target to the jump's target. The jump/bra
1664 can then be deleted. 2 bytes
1665
1666 * mov abs32 -> mov abs16 1 or 2 bytes
1667
1668 * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
1669 - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
1670
1671 * Most instructions which accept d32 can relax to d16 1 or 2 bytes
1672 - Most instructions which accept d16 can relax to d8 1 or 2 bytes
1673
1674 We don't handle imm16->imm8 or d16->d8 as they're very rare
1675 and somewhat more difficult to support. */
1676
b34976b6 1677static bfd_boolean
252b5132
RH		 1678mn10300_elf_relax_section (abfd, sec, link_info, again)
1679 bfd *abfd;
1680 asection *sec;
1681 struct bfd_link_info *link_info;
b34976b6 1682 bfd_boolean *again;
252b5132
RH		 1683{
1684 Elf_Internal_Shdr *symtab_hdr;
1685 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH		 1686 Elf_Internal_Rela *irel, *irelend;
1687 bfd_byte *contents = NULL;
6cdc0ccc 1688 Elf_Internal_Sym *isymbuf = NULL;
252b5132 1689 struct elf32_mn10300_link_hash_table *hash_table;
6cdc0ccc 1690 asection *section = sec;
252b5132
RH		 1691
1692 /* Assume nothing changes. */
b34976b6 1693 *again = FALSE;
252b5132
RH		 1694
1695 /* We need a pointer to the mn10300 specific hash table. */
1696 hash_table = elf32_mn10300_hash_table (link_info);
1697
1698 /* Initialize fields in each hash table entry the first time through. */
1699 if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
1700 {
1701 bfd *input_bfd;
1702
1703 /* Iterate over all the input bfds. */
1704 for (input_bfd = link_info->input_bfds;
1705 input_bfd != NULL;
1706 input_bfd = input_bfd->link_next)
1707 {
252b5132
RH		 1708 /* We're going to need all the symbols for each bfd. */
1709 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6cdc0ccc 1710 if (symtab_hdr->sh_info != 0)
9ad5cbcf 1711 {
6cdc0ccc
AM		 1712 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1713 if (isymbuf == NULL)
1714 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
1715 symtab_hdr->sh_info, 0,
1716 NULL, NULL, NULL);
1717 if (isymbuf == NULL)
010ac81f
KH		 1718 goto error_return;
1719 }
252b5132
RH		 1720
1721 /* Iterate over each section in this bfd. */
1722 for (section = input_bfd->sections;
1723 section != NULL;
1724 section = section->next)
1725 {
1726 struct elf32_mn10300_link_hash_entry *hash;
1727 Elf_Internal_Sym *sym;
86033394 1728 asection *sym_sec = NULL;
252b5132
RH		 1729 const char *sym_name;
1730 char *new_name;
252b5132 1731
e948afaf 1732 /* If there's nothing to do in this section, skip it. */
eb13e63f
DD		 1733 if (! ((section->flags & SEC_RELOC) != 0
1734 && section->reloc_count != 0))
1735 continue;
1736 if ((section->flags & SEC_ALLOC) == 0)
e948afaf
AO		 1737 continue;
1738
252b5132
RH		 1739 /* Get cached copy of section contents if it exists. */
1740 if (elf_section_data (section)->this_hdr.contents != NULL)
1741 contents = elf_section_data (section)->this_hdr.contents;
eea6121a 1742 else if (section->size != 0)
252b5132
RH		 1743 {
1744 /* Go get them off disk. */
eea6121a
AM		 1745 if (!bfd_malloc_and_get_section (input_bfd, section,
1746 &contents))
252b5132
RH		 1747 goto error_return;
1748 }
1749 else
6cdc0ccc 1750 contents = NULL;
252b5132
RH		 1751
1752 /* If there aren't any relocs, then there's nothing to do. */
1753 if ((section->flags & SEC_RELOC) != 0
1754 && section->reloc_count != 0)
1755 {
1756
1757 /* Get a copy of the native relocations. */
45d6a902 1758 internal_relocs = (_bfd_elf_link_read_relocs
252b5132
RH		 1759 (input_bfd, section, (PTR) NULL,
1760 (Elf_Internal_Rela *) NULL,
1761 link_info->keep_memory));
1762 if (internal_relocs == NULL)
1763 goto error_return;
252b5132
RH		 1764
1765 /* Now examine each relocation. */
1766 irel = internal_relocs;
1767 irelend = irel + section->reloc_count;
1768 for (; irel < irelend; irel++)
1769 {
1770 long r_type;
1771 unsigned long r_index;
1772 unsigned char code;
1773
1774 r_type = ELF32_R_TYPE (irel->r_info);
1775 r_index = ELF32_R_SYM (irel->r_info);
1776
010ac81f 1777 if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
252b5132
RH		 1778 goto error_return;
1779
1780 /* We need the name and hash table entry of the target
1781 symbol! */
1782 hash = NULL;
1783 sym = NULL;
1784 sym_sec = NULL;
1785
1786 if (r_index < symtab_hdr->sh_info)
1787 {
1788 /* A local symbol. */
6cdc0ccc 1789 Elf_Internal_Sym *isym;
dc810e39
AM		 1790 struct elf_link_hash_table *elftab;
1791 bfd_size_type amt;
252b5132 1792
6cdc0ccc
AM		 1793 isym = isymbuf + r_index;
1794 if (isym->st_shndx == SHN_UNDEF)
252b5132 1795 sym_sec = bfd_und_section_ptr;
6cdc0ccc 1796 else if (isym->st_shndx == SHN_ABS)
252b5132 1797 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 1798 else if (isym->st_shndx == SHN_COMMON)
252b5132 1799 sym_sec = bfd_com_section_ptr;
9ad5cbcf
AM		 1800 else
1801 sym_sec
1802 = bfd_section_from_elf_index (input_bfd,
6cdc0ccc 1803 isym->st_shndx);
a7c10850 1804
9ad5cbcf
AM		 1805 sym_name
1806 = bfd_elf_string_from_elf_section (input_bfd,
1807 (symtab_hdr
1808 ->sh_link),
6cdc0ccc 1809 isym->st_name);
252b5132
RH		 1810
1811 /* If it isn't a function, then we don't care
1812 about it. */
6cdc0ccc 1813 if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
252b5132
RH		 1814 continue;
1815
1816 /* Tack on an ID so we can uniquely identify this
1817 local symbol in the global hash table. */
dc810e39
AM		 1818 amt = strlen (sym_name) + 10;
1819 new_name = bfd_malloc (amt);
252b5132
RH		 1820 if (new_name == 0)
1821 goto error_return;
1822
f60ca5e3 1823 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 1824 sym_name = new_name;
1825
dc810e39
AM		 1826 elftab = &hash_table->static_hash_table->root;
1827 hash = ((struct elf32_mn10300_link_hash_entry *)
1828 elf_link_hash_lookup (elftab, sym_name,
b34976b6 1829 TRUE, TRUE, FALSE));
252b5132
RH		 1830 free (new_name);
1831 }
1832 else
1833 {
1834 r_index -= symtab_hdr->sh_info;
1835 hash = (struct elf32_mn10300_link_hash_entry *)
1836 elf_sym_hashes (input_bfd)[r_index];
1837 }
1838
eb13e63f
DD		 1839 sym_name = hash->root.root.root.string;
1840 if ((section->flags & SEC_CODE) != 0)
1841 {
1842 /* If this is not a "call" instruction, then we
1843 should convert "call" instructions to "calls"
1844 instructions. */
1845 code = bfd_get_8 (input_bfd,
1846 contents + irel->r_offset - 1);
1847 if (code != 0xdd && code != 0xcd)
1848 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1849 }
252b5132 1850
6cdc0ccc
AM		 1851 /* If this is a jump/call, then bump the
1852 direct_calls counter. Else force "call" to
1853 "calls" conversions. */
252b5132 1854 if (r_type == R_MN10300_PCREL32
03a12831
AO		 1855 || r_type == R_MN10300_PLT32
1856 || r_type == R_MN10300_PLT16
252b5132
RH		 1857 || r_type == R_MN10300_PCREL16)
1858 hash->direct_calls++;
1859 else
1860 hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
1861 }
1862 }
1863
1864 /* Now look at the actual contents to get the stack size,
1865 and a list of what registers were saved in the prologue
1866 (ie movm_args). */
1867 if ((section->flags & SEC_CODE) != 0)
1868 {
6cdc0ccc 1869 Elf_Internal_Sym *isym, *isymend;
9ad5cbcf 1870 unsigned int sec_shndx;
6cdc0ccc
AM		 1871 struct elf_link_hash_entry **hashes;
1872 struct elf_link_hash_entry **end_hashes;
1873 unsigned int symcount;
252b5132 1874
9ad5cbcf
AM		 1875 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
1876 section);
252b5132 1877
1055df0f
AO		 1878 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1879 - symtab_hdr->sh_info);
1880 hashes = elf_sym_hashes (input_bfd);
1881 end_hashes = hashes + symcount;
1882
252b5132
RH		 1883 /* Look at each function defined in this section and
1884 update info for that function. */
6cdc0ccc
AM		 1885 isymend = isymbuf + symtab_hdr->sh_info;
1886 for (isym = isymbuf; isym < isymend; isym++)
252b5132 1887 {
6cdc0ccc
AM		 1888 if (isym->st_shndx == sec_shndx
1889 && ELF_ST_TYPE (isym->st_info) == STT_FUNC)
252b5132 1890 {
dc810e39
AM		 1891 struct elf_link_hash_table *elftab;
1892 bfd_size_type amt;
1055df0f
AO		 1893 struct elf_link_hash_entry **lhashes = hashes;
1894
1895 /* Skip a local symbol if it aliases a
1896 global one. */
1897 for (; lhashes < end_hashes; lhashes++)
1898 {
1899 hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
1900 if ((hash->root.root.type == bfd_link_hash_defined
1901 || hash->root.root.type == bfd_link_hash_defweak)
1902 && hash->root.root.u.def.section == section
1903 && hash->root.type == STT_FUNC
1904 && hash->root.root.u.def.value == isym->st_value)
1905 break;
1906 }
1907 if (lhashes != end_hashes)
1908 continue;
dc810e39 1909
6cdc0ccc 1910 if (isym->st_shndx == SHN_UNDEF)
252b5132 1911 sym_sec = bfd_und_section_ptr;
6cdc0ccc 1912 else if (isym->st_shndx == SHN_ABS)
252b5132 1913 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 1914 else if (isym->st_shndx == SHN_COMMON)
252b5132 1915 sym_sec = bfd_com_section_ptr;
9ad5cbcf
AM		 1916 else
1917 sym_sec
1918 = bfd_section_from_elf_index (input_bfd,
6cdc0ccc 1919 isym->st_shndx);
252b5132 1920
dc810e39
AM		 1921 sym_name = (bfd_elf_string_from_elf_section
1922 (input_bfd, symtab_hdr->sh_link,
6cdc0ccc 1923 isym->st_name));
252b5132
RH		 1924
1925 /* Tack on an ID so we can uniquely identify this
1926 local symbol in the global hash table. */
dc810e39
AM		 1927 amt = strlen (sym_name) + 10;
1928 new_name = bfd_malloc (amt);
252b5132
RH		 1929 if (new_name == 0)
1930 goto error_return;
1931
f60ca5e3 1932 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 1933 sym_name = new_name;
1934
dc810e39
AM		 1935 elftab = &hash_table->static_hash_table->root;
1936 hash = ((struct elf32_mn10300_link_hash_entry *)
1937 elf_link_hash_lookup (elftab, sym_name,
b34976b6 1938 TRUE, TRUE, FALSE));
252b5132
RH		 1939 free (new_name);
1940 compute_function_info (input_bfd, hash,
6cdc0ccc 1941 isym->st_value, contents);
eb13e63f 1942 hash->value = isym->st_value;
252b5132
RH		 1943 }
1944 }
1945
6cdc0ccc 1946 for (; hashes < end_hashes; hashes++)
252b5132 1947 {
6cdc0ccc 1948 hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
9ad5cbcf
AM		 1949 if ((hash->root.root.type == bfd_link_hash_defined
1950 || hash->root.root.type == bfd_link_hash_defweak)
1951 && hash->root.root.u.def.section == section
9bb351fd 1952 && hash->root.type == STT_FUNC)
252b5132
RH		 1953 compute_function_info (input_bfd, hash,
1954 (hash)->root.root.u.def.value,
1955 contents);
1956 }
1957 }
1958
1959 /* Cache or free any memory we allocated for the relocs. */
6cdc0ccc
AM		 1960 if (internal_relocs != NULL
1961 && elf_section_data (section)->relocs != internal_relocs)
1962 free (internal_relocs);
1963 internal_relocs = NULL;
252b5132
RH		 1964
1965 /* Cache or free any memory we allocated for the contents. */
6cdc0ccc
AM		 1966 if (contents != NULL
1967 && elf_section_data (section)->this_hdr.contents != contents)
252b5132
RH		 1968 {
1969 if (! link_info->keep_memory)
6cdc0ccc 1970 free (contents);
252b5132
RH		 1971 else
1972 {
1973 /* Cache the section contents for elf_link_input_bfd. */
1974 elf_section_data (section)->this_hdr.contents = contents;
1975 }
252b5132 1976 }
6cdc0ccc 1977 contents = NULL;
9ad5cbcf
AM		 1978 }
1979
252b5132 1980 /* Cache or free any memory we allocated for the symbols. */
6cdc0ccc
AM		 1981 if (isymbuf != NULL
1982 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132
RH		 1983 {
1984 if (! link_info->keep_memory)
6cdc0ccc 1985 free (isymbuf);
252b5132
RH		 1986 else
1987 {
1988 /* Cache the symbols for elf_link_input_bfd. */
6cdc0ccc 1989 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132 1990 }
252b5132 1991 }
6cdc0ccc 1992 isymbuf = NULL;
252b5132
RH		 1993 }
1994
1995 /* Now iterate on each symbol in the hash table and perform
1996 the final initialization steps on each. */
1997 elf32_mn10300_link_hash_traverse (hash_table,
1998 elf32_mn10300_finish_hash_table_entry,
1055df0f 1999 link_info);
252b5132
RH		 2000 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2001 elf32_mn10300_finish_hash_table_entry,
1055df0f 2002 link_info);
252b5132 2003
eb13e63f
DD		 2004 {
2005 /* This section of code collects all our local symbols, sorts
2006 them by value, and looks for multiple symbols referring to
2007 the same address. For those symbols, the flags are merged.
2008 At this point, the only flag that can be set is
2009 MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
2010 together. */
2011 int static_count = 0, i;
2012 struct elf32_mn10300_link_hash_entry **entries;
2013 struct elf32_mn10300_link_hash_entry **ptr;
2014
2015 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2016 elf32_mn10300_count_hash_table_entries,
2017 &static_count);
2018
2019 entries = (struct elf32_mn10300_link_hash_entry **)
2020 bfd_malloc (static_count * sizeof (struct elf32_mn10300_link_hash_entry *));
2021
2022 ptr = entries;
2023 elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
2024 elf32_mn10300_list_hash_table_entries,
2025 &ptr);
2026
2027 qsort (entries, static_count, sizeof(entries[0]), sort_by_value);
2028
2029 for (i=0; i<static_count-1; i++)
2030 if (entries[i]->value && entries[i]->value == entries[i+1]->value)
2031 {
2032 int v = entries[i]->flags;
2033 int j;
2034 for (j=i+1; j<static_count && entries[j]->value == entries[i]->value; j++)
2035 v |= entries[j]->flags;
2036 for (j=i; j<static_count && entries[j]->value == entries[i]->value; j++)
2037 entries[j]->flags = v;
2038 i = j-1;
2039 }
2040 }
2041
252b5132
RH		 2042 /* All entries in the hash table are fully initialized. */
2043 hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
2044
2045 /* Now that everything has been initialized, go through each
2046 code section and delete any prologue insns which will be
2047 redundant because their operations will be performed by
2048 a "call" instruction. */
2049 for (input_bfd = link_info->input_bfds;
2050 input_bfd != NULL;
2051 input_bfd = input_bfd->link_next)
2052 {
9ad5cbcf 2053 /* We're going to need all the local symbols for each bfd. */
252b5132 2054 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6cdc0ccc 2055 if (symtab_hdr->sh_info != 0)
9ad5cbcf 2056 {
6cdc0ccc
AM		 2057 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2058 if (isymbuf == NULL)
2059 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
2060 symtab_hdr->sh_info, 0,
2061 NULL, NULL, NULL);
2062 if (isymbuf == NULL)
9ad5cbcf 2063 goto error_return;
010ac81f 2064 }
252b5132
RH		 2065
2066 /* Walk over each section in this bfd. */
2067 for (section = input_bfd->sections;
2068 section != NULL;
2069 section = section->next)
2070 {
9ad5cbcf 2071 unsigned int sec_shndx;
6cdc0ccc
AM		 2072 Elf_Internal_Sym *isym, *isymend;
2073 struct elf_link_hash_entry **hashes;
2074 struct elf_link_hash_entry **end_hashes;
2075 unsigned int symcount;
252b5132
RH		 2076
2077 /* Skip non-code sections and empty sections. */
eea6121a 2078 if ((section->flags & SEC_CODE) == 0 || section->size == 0)
252b5132
RH		 2079 continue;
2080
2081 if (section->reloc_count != 0)
2082 {
010ac81f 2083 /* Get a copy of the native relocations. */
45d6a902 2084 internal_relocs = (_bfd_elf_link_read_relocs
010ac81f
KH		 2085 (input_bfd, section, (PTR) NULL,
2086 (Elf_Internal_Rela *) NULL,
2087 link_info->keep_memory));
2088 if (internal_relocs == NULL)
2089 goto error_return;
252b5132
RH		 2090 }
2091
2092 /* Get cached copy of section contents if it exists. */
2093 if (elf_section_data (section)->this_hdr.contents != NULL)
2094 contents = elf_section_data (section)->this_hdr.contents;
2095 else
2096 {
2097 /* Go get them off disk. */
eea6121a
AM		 2098 if (!bfd_malloc_and_get_section (input_bfd, section,
2099 &contents))
252b5132
RH		 2100 goto error_return;
2101 }
2102
9ad5cbcf
AM		 2103 sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
2104 section);
252b5132
RH		 2105
2106 /* Now look for any function in this section which needs
2107 insns deleted from its prologue. */
6cdc0ccc
AM		 2108 isymend = isymbuf + symtab_hdr->sh_info;
2109 for (isym = isymbuf; isym < isymend; isym++)
252b5132 2110 {
252b5132 2111 struct elf32_mn10300_link_hash_entry *sym_hash;
86033394 2112 asection *sym_sec = NULL;
252b5132 2113 const char *sym_name;
252b5132 2114 char *new_name;
dc810e39
AM		 2115 struct elf_link_hash_table *elftab;
2116 bfd_size_type amt;
252b5132 2117
6cdc0ccc 2118 if (isym->st_shndx != sec_shndx)
252b5132
RH		 2119 continue;
2120
6cdc0ccc 2121 if (isym->st_shndx == SHN_UNDEF)
252b5132 2122 sym_sec = bfd_und_section_ptr;
6cdc0ccc 2123 else if (isym->st_shndx == SHN_ABS)
252b5132 2124 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 2125 else if (isym->st_shndx == SHN_COMMON)
252b5132 2126 sym_sec = bfd_com_section_ptr;
86033394 2127 else
9ad5cbcf 2128 sym_sec
6cdc0ccc 2129 = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
a7c10850 2130
9ad5cbcf
AM		 2131 sym_name
2132 = bfd_elf_string_from_elf_section (input_bfd,
2133 symtab_hdr->sh_link,
6cdc0ccc 2134 isym->st_name);
252b5132
RH		 2135
2136 /* Tack on an ID so we can uniquely identify this
2137 local symbol in the global hash table. */
dc810e39
AM		 2138 amt = strlen (sym_name) + 10;
2139 new_name = bfd_malloc (amt);
252b5132
RH		 2140 if (new_name == 0)
2141 goto error_return;
f60ca5e3 2142 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 2143 sym_name = new_name;
2144
dc810e39
AM		 2145 elftab = &hash_table->static_hash_table->root;
2146 sym_hash = ((struct elf32_mn10300_link_hash_entry *)
2147 elf_link_hash_lookup (elftab, sym_name,
b34976b6 2148 FALSE, FALSE, FALSE));
252b5132
RH		 2149
2150 free (new_name);
2151 if (sym_hash == NULL)
2152 continue;
2153
9ad5cbcf
AM		 2154 if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2155 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
252b5132
RH		 2156 {
2157 int bytes = 0;
2158
2159 /* Note that we've changed things. */
2160 elf_section_data (section)->relocs = internal_relocs;
252b5132 2161 elf_section_data (section)->this_hdr.contents = contents;
6cdc0ccc 2162 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2163
2164 /* Count how many bytes we're going to delete. */
2165 if (sym_hash->movm_args)
2166 bytes += 2;
2167
1a101a42
AM		 2168 if (sym_hash->stack_size > 0)
2169 {
2170 if (sym_hash->stack_size <= 128)
2171 bytes += 3;
2172 else
2173 bytes += 4;
2174 }
252b5132
RH		 2175
2176 /* Note that we've deleted prologue bytes for this
2177 function. */
2178 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2179
2180 /* Actually delete the bytes. */
2181 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2182 section,
6cdc0ccc 2183 isym->st_value,
252b5132
RH		 2184 bytes))
2185 goto error_return;
2186
2187 /* Something changed. Not strictly necessary, but
2188 may lead to more relaxing opportunities. */
b34976b6 2189 *again = TRUE;
252b5132
RH		 2190 }
2191 }
2192
2193 /* Look for any global functions in this section which
2194 need insns deleted from their prologues. */
6cdc0ccc 2195 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
9ad5cbcf 2196 - symtab_hdr->sh_info);
709e685d 2197 hashes = elf_sym_hashes (input_bfd);
6cdc0ccc
AM		 2198 end_hashes = hashes + symcount;
2199 for (; hashes < end_hashes; hashes++)
252b5132 2200 {
252b5132
RH		 2201 struct elf32_mn10300_link_hash_entry *sym_hash;
2202
6cdc0ccc 2203 sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
9ad5cbcf
AM		 2204 if ((sym_hash->root.root.type == bfd_link_hash_defined
2205 || sym_hash->root.root.type == bfd_link_hash_defweak)
2206 && sym_hash->root.root.u.def.section == section
2207 && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
2208 && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
252b5132
RH		 2209 {
2210 int bytes = 0;
9ad5cbcf 2211 bfd_vma symval;
252b5132
RH		 2212
2213 /* Note that we've changed things. */
2214 elf_section_data (section)->relocs = internal_relocs;
252b5132 2215 elf_section_data (section)->this_hdr.contents = contents;
6cdc0ccc 2216 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2217
2218 /* Count how many bytes we're going to delete. */
2219 if (sym_hash->movm_args)
2220 bytes += 2;
2221
1a101a42
AM		 2222 if (sym_hash->stack_size > 0)
2223 {
2224 if (sym_hash->stack_size <= 128)
2225 bytes += 3;
2226 else
2227 bytes += 4;
2228 }
252b5132
RH		 2229
2230 /* Note that we've deleted prologue bytes for this
2231 function. */
2232 sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
2233
2234 /* Actually delete the bytes. */
9ad5cbcf 2235 symval = sym_hash->root.root.u.def.value;
252b5132
RH		 2236 if (!mn10300_elf_relax_delete_bytes (input_bfd,
2237 section,
9ad5cbcf 2238 symval,
252b5132
RH		 2239 bytes))
2240 goto error_return;
2241
2242 /* Something changed. Not strictly necessary, but
2243 may lead to more relaxing opportunities. */
b34976b6 2244 *again = TRUE;
252b5132
RH		 2245 }
2246 }
2247
2248 /* Cache or free any memory we allocated for the relocs. */
6cdc0ccc
AM		 2249 if (internal_relocs != NULL
2250 && elf_section_data (section)->relocs != internal_relocs)
2251 free (internal_relocs);
2252 internal_relocs = NULL;
252b5132
RH		 2253
2254 /* Cache or free any memory we allocated for the contents. */
6cdc0ccc
AM		 2255 if (contents != NULL
2256 && elf_section_data (section)->this_hdr.contents != contents)
252b5132
RH		 2257 {
2258 if (! link_info->keep_memory)
6cdc0ccc 2259 free (contents);
252b5132
RH		 2260 else
2261 {
2262 /* Cache the section contents for elf_link_input_bfd. */
2263 elf_section_data (section)->this_hdr.contents = contents;
2264 }
252b5132 2265 }
6cdc0ccc 2266 contents = NULL;
9ad5cbcf
AM		 2267 }
2268
252b5132 2269 /* Cache or free any memory we allocated for the symbols. */
6cdc0ccc
AM		 2270 if (isymbuf != NULL
2271 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132
RH		 2272 {
2273 if (! link_info->keep_memory)
6cdc0ccc
AM		 2274 free (isymbuf);
2275 else
252b5132 2276 {
6cdc0ccc
AM		 2277 /* Cache the symbols for elf_link_input_bfd. */
2278 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132 2279 }
252b5132 2280 }
6cdc0ccc 2281 isymbuf = NULL;
252b5132
RH		 2282 }
2283 }
2284
252b5132
RH		 2285 /* (Re)initialize for the basic instruction shortening/relaxing pass. */
2286 contents = NULL;
252b5132 2287 internal_relocs = NULL;
6cdc0ccc
AM		 2288 isymbuf = NULL;
2289 /* For error_return. */
2290 section = sec;
252b5132 2291
1049f94e 2292 /* We don't have to do anything for a relocatable link, if
252b5132
RH		 2293 this section does not have relocs, or if this is not a
2294 code section. */
1049f94e 2295 if (link_info->relocatable
252b5132
RH		 2296 || (sec->flags & SEC_RELOC) == 0
2297 || sec->reloc_count == 0
2298 || (sec->flags & SEC_CODE) == 0)
b34976b6 2299 return TRUE;
252b5132 2300
252b5132
RH		 2301 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2302
2303 /* Get a copy of the native relocations. */
45d6a902 2304 internal_relocs = (_bfd_elf_link_read_relocs
252b5132
RH		 2305 (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2306 link_info->keep_memory));
2307 if (internal_relocs == NULL)
2308 goto error_return;
252b5132
RH		 2309
2310 /* Walk through them looking for relaxing opportunities. */
2311 irelend = internal_relocs + sec->reloc_count;
2312 for (irel = internal_relocs; irel < irelend; irel++)
2313 {
2314 bfd_vma symval;
2315 struct elf32_mn10300_link_hash_entry *h = NULL;
2316
2317 /* If this isn't something that can be relaxed, then ignore
2318 this reloc. */
2319 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
2320 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
2321 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
2322 continue;
2323
2324 /* Get the section contents if we haven't done so already. */
2325 if (contents == NULL)
2326 {
2327 /* Get cached copy if it exists. */
2328 if (elf_section_data (sec)->this_hdr.contents != NULL)
2329 contents = elf_section_data (sec)->this_hdr.contents;
2330 else
2331 {
2332 /* Go get them off disk. */
eea6121a 2333 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH		 2334 goto error_return;
2335 }
2336 }
2337
b34976b6 2338 /* Read this BFD's symbols if we haven't done so already. */
6cdc0ccc 2339 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
252b5132 2340 {
6cdc0ccc
AM		 2341 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
2342 if (isymbuf == NULL)
2343 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
2344 symtab_hdr->sh_info, 0,
2345 NULL, NULL, NULL);
2346 if (isymbuf == NULL)
2347 goto error_return;
252b5132
RH		 2348 }
2349
2350 /* Get the value of the symbol referred to by the reloc. */
2351 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
2352 {
6cdc0ccc 2353 Elf_Internal_Sym *isym;
86033394 2354 asection *sym_sec = NULL;
252b5132
RH		 2355 const char *sym_name;
2356 char *new_name;
dd90f1b2 2357 bfd_vma saved_addend;
252b5132
RH		 2358
2359 /* A local symbol. */
6cdc0ccc
AM		 2360 isym = isymbuf + ELF32_R_SYM (irel->r_info);
2361 if (isym->st_shndx == SHN_UNDEF)
252b5132 2362 sym_sec = bfd_und_section_ptr;
6cdc0ccc 2363 else if (isym->st_shndx == SHN_ABS)
252b5132 2364 sym_sec = bfd_abs_section_ptr;
6cdc0ccc 2365 else if (isym->st_shndx == SHN_COMMON)
252b5132 2366 sym_sec = bfd_com_section_ptr;
86033394 2367 else
6cdc0ccc 2368 sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
a7c10850 2369
252b5132
RH		 2370 sym_name = bfd_elf_string_from_elf_section (abfd,
2371 symtab_hdr->sh_link,
6cdc0ccc 2372 isym->st_name);
252b5132 2373
dd90f1b2
DD		 2374 if ((sym_sec->flags & SEC_MERGE)
2375 && ELF_ST_TYPE (isym->st_info) == STT_SECTION
2376 && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
2377 {
2378 saved_addend = irel->r_addend;
2379 symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel);
2380 symval += irel->r_addend;
2381 irel->r_addend = saved_addend;
2382 }
2383 else
2384 {
2385 symval = (isym->st_value
2386 + sym_sec->output_section->vma
2387 + sym_sec->output_offset);
2388 }
252b5132
RH		 2389 /* Tack on an ID so we can uniquely identify this
2390 local symbol in the global hash table. */
dc810e39 2391 new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
252b5132
RH		 2392 if (new_name == 0)
2393 goto error_return;
f60ca5e3 2394 sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
252b5132
RH		 2395 sym_name = new_name;
2396
2397 h = (struct elf32_mn10300_link_hash_entry *)
2398 elf_link_hash_lookup (&hash_table->static_hash_table->root,
b34976b6 2399 sym_name, FALSE, FALSE, FALSE);
252b5132
RH		 2400 free (new_name);
2401 }
2402 else
2403 {
2404 unsigned long indx;
2405
2406 /* An external symbol. */
2407 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
2408 h = (struct elf32_mn10300_link_hash_entry *)
2409 (elf_sym_hashes (abfd)[indx]);
2410 BFD_ASSERT (h != NULL);
2411 if (h->root.root.type != bfd_link_hash_defined
2412 && h->root.root.type != bfd_link_hash_defweak)
2413 {
2414 /* This appears to be a reference to an undefined
2415 symbol. Just ignore it--it will be caught by the
2416 regular reloc processing. */
2417 continue;
2418 }
2419
2420 symval = (h->root.root.u.def.value
2421 + h->root.root.u.def.section->output_section->vma
2422 + h->root.root.u.def.section->output_offset);
2423 }
2424
2425 /* For simplicity of coding, we are going to modify the section
2426 contents, the section relocs, and the BFD symbol table. We
2427 must tell the rest of the code not to free up this
2428 information. It would be possible to instead create a table
2429 of changes which have to be made, as is done in coff-mips.c;
2430 that would be more work, but would require less memory when
2431 the linker is run. */
2432
2433 /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
2434 branch/call, also deal with "call" -> "calls" conversions and
2435 insertion of prologue data into "call" instructions. */
03a12831
AO		 2436 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
2437 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
252b5132
RH		 2438 {
2439 bfd_vma value = symval;
2440
03a12831
AO		 2441 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
2442 && h != NULL
2443 && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
2444 && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
2445 && h->root.plt.offset != (bfd_vma) -1)
2446 {
2447 asection * splt;
2448
2449 splt = bfd_get_section_by_name (elf_hash_table (link_info)
2450 ->dynobj, ".plt");
3b36f7e6 2451
03a12831
AO		 2452 value = ((splt->output_section->vma
2453 + splt->output_offset
2454 + h->root.plt.offset)
2455 - (sec->output_section->vma
2456 + sec->output_offset
2457 + irel->r_offset));
2458 }
2459
252b5132
RH		 2460 /* If we've got a "call" instruction that needs to be turned
2461 into a "calls" instruction, do so now. It saves a byte. */
2462 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2463 {
2464 unsigned char code;
2465
2466 /* Get the opcode. */
2467 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2468
2469 /* Make sure we're working with a "call" instruction! */
2470 if (code == 0xdd)
2471 {
2472 /* Note that we've changed the relocs, section contents,
2473 etc. */
2474 elf_section_data (sec)->relocs = internal_relocs;
252b5132 2475 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2476 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2477
2478 /* Fix the opcode. */
2479 bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
2480 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2481
2482 /* Fix irel->r_offset and irel->r_addend. */
2483 irel->r_offset += 1;
2484 irel->r_addend += 1;
2485
2486 /* Delete one byte of data. */
2487 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2488 irel->r_offset + 3, 1))
2489 goto error_return;
2490
2491 /* That will change things, so, we should relax again.
2492 Note that this is not required, and it may be slow. */
b34976b6 2493 *again = TRUE;
252b5132
RH		 2494 }
2495 }
2496 else if (h)
2497 {
2498 /* We've got a "call" instruction which needs some data
2499 from target function filled in. */
2500 unsigned char code;
2501
2502 /* Get the opcode. */
2503 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2504
2505 /* Insert data from the target function into the "call"
2506 instruction if needed. */
2507 if (code == 0xdd)
2508 {
2509 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
2510 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2511 contents + irel->r_offset + 5);
2512 }
2513 }
2514
2515 /* Deal with pc-relative gunk. */
2516 value -= (sec->output_section->vma + sec->output_offset);
2517 value -= irel->r_offset;
2518 value += irel->r_addend;
2519
2520 /* See if the value will fit in 16 bits, note the high value is
2521 0x7fff + 2 as the target will be two bytes closer if we are
2522 able to relax. */
010ac81f 2523 if ((long) value < 0x8001 && (long) value > -0x8000)
252b5132
RH		 2524 {
2525 unsigned char code;
2526
2527 /* Get the opcode. */
2528 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2529
2530 if (code != 0xdc && code != 0xdd && code != 0xff)
2531 continue;
2532
2533 /* Note that we've changed the relocs, section contents, etc. */
2534 elf_section_data (sec)->relocs = internal_relocs;
252b5132 2535 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2536 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2537
2538 /* Fix the opcode. */
2539 if (code == 0xdc)
2540 bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
2541 else if (code == 0xdd)
2542 bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
2543 else if (code == 0xff)
2544 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
2545
2546 /* Fix the relocation's type. */
2547 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 2548 (ELF32_R_TYPE (irel->r_info)
2549 == (int) R_MN10300_PLT32)
2550 ? R_MN10300_PLT16 :
252b5132
RH		 2551 R_MN10300_PCREL16);
2552
2553 /* Delete two bytes of data. */
2554 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2555 irel->r_offset + 1, 2))
2556 goto error_return;
2557
2558 /* That will change things, so, we should relax again.
2559 Note that this is not required, and it may be slow. */
b34976b6 2560 *again = TRUE;
252b5132
RH		 2561 }
2562 }
2563
2564 /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
2565 branch. */
2566 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
2567 {
2568 bfd_vma value = symval;
2569
2570 /* If we've got a "call" instruction that needs to be turned
2571 into a "calls" instruction, do so now. It saves a byte. */
2572 if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
2573 {
2574 unsigned char code;
2575
2576 /* Get the opcode. */
2577 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2578
2579 /* Make sure we're working with a "call" instruction! */
2580 if (code == 0xcd)
2581 {
2582 /* Note that we've changed the relocs, section contents,
2583 etc. */
2584 elf_section_data (sec)->relocs = internal_relocs;
252b5132 2585 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2586 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2587
2588 /* Fix the opcode. */
2589 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
2590 bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
2591
2592 /* Fix irel->r_offset and irel->r_addend. */
2593 irel->r_offset += 1;
2594 irel->r_addend += 1;
2595
2596 /* Delete one byte of data. */
2597 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2598 irel->r_offset + 1, 1))
2599 goto error_return;
2600
2601 /* That will change things, so, we should relax again.
2602 Note that this is not required, and it may be slow. */
b34976b6 2603 *again = TRUE;
252b5132
RH		 2604 }
2605 }
2606 else if (h)
2607 {
2608 unsigned char code;
2609
2610 /* Get the opcode. */
2611 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2612
2613 /* Insert data from the target function into the "call"
2614 instruction if needed. */
2615 if (code == 0xcd)
2616 {
2617 bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
2618 bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
2619 contents + irel->r_offset + 3);
2620 }
2621 }
2622
2623 /* Deal with pc-relative gunk. */
2624 value -= (sec->output_section->vma + sec->output_offset);
2625 value -= irel->r_offset;
2626 value += irel->r_addend;
2627
2628 /* See if the value will fit in 8 bits, note the high value is
2629 0x7f + 1 as the target will be one bytes closer if we are
2630 able to relax. */
010ac81f 2631 if ((long) value < 0x80 && (long) value > -0x80)
252b5132
RH		 2632 {
2633 unsigned char code;
2634
2635 /* Get the opcode. */
2636 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2637
2638 if (code != 0xcc)
2639 continue;
2640
2641 /* Note that we've changed the relocs, section contents, etc. */
2642 elf_section_data (sec)->relocs = internal_relocs;
252b5132 2643 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2644 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2645
2646 /* Fix the opcode. */
2647 bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
2648
2649 /* Fix the relocation's type. */
2650 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2651 R_MN10300_PCREL8);
2652
2653 /* Delete one byte of data. */
2654 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2655 irel->r_offset + 1, 1))
2656 goto error_return;
2657
2658 /* That will change things, so, we should relax again.
2659 Note that this is not required, and it may be slow. */
b34976b6 2660 *again = TRUE;
252b5132
RH		 2661 }
2662 }
2663
2664 /* Try to eliminate an unconditional 8 bit pc-relative branch
2665 which immediately follows a conditional 8 bit pc-relative
2666 branch around the unconditional branch.
2667
2668 original: new:
2669 bCC lab1 bCC' lab2
2670 bra lab2
2671 lab1: lab1:
2672
252b5132
RH		 2673 This happens when the bCC can't reach lab2 at assembly time,
2674 but due to other relaxations it can reach at link time. */
2675 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
2676 {
2677 Elf_Internal_Rela *nrel;
2678 bfd_vma value = symval;
2679 unsigned char code;
2680
2681 /* Deal with pc-relative gunk. */
2682 value -= (sec->output_section->vma + sec->output_offset);
2683 value -= irel->r_offset;
2684 value += irel->r_addend;
2685
2686 /* Do nothing if this reloc is the last byte in the section. */
eea6121a 2687 if (irel->r_offset == sec->size)
252b5132
RH		 2688 continue;
2689
2690 /* See if the next instruction is an unconditional pc-relative
2691 branch, more often than not this test will fail, so we
2692 test it first to speed things up. */
2693 code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
2694 if (code != 0xca)
2695 continue;
2696
2697 /* Also make sure the next relocation applies to the next
2698 instruction and that it's a pc-relative 8 bit branch. */
2699 nrel = irel + 1;
2700 if (nrel == irelend
2701 || irel->r_offset + 2 != nrel->r_offset
2702 || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
2703 continue;
2704
2705 /* Make sure our destination immediately follows the
2706 unconditional branch. */
2707 if (symval != (sec->output_section->vma + sec->output_offset
2708 + irel->r_offset + 3))
2709 continue;
2710
2711 /* Now make sure we are a conditional branch. This may not
2712 be necessary, but why take the chance.
2713
2714 Note these checks assume that R_MN10300_PCREL8 relocs
2715 only occur on bCC and bCCx insns. If they occured
2716 elsewhere, we'd need to know the start of this insn
2717 for this check to be accurate. */
2718 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
2719 if (code != 0xc0 && code != 0xc1 && code != 0xc2
2720 && code != 0xc3 && code != 0xc4 && code != 0xc5
2721 && code != 0xc6 && code != 0xc7 && code != 0xc8
2722 && code != 0xc9 && code != 0xe8 && code != 0xe9
2723 && code != 0xea && code != 0xeb)
2724 continue;
2725
2726 /* We also have to be sure there is no symbol/label
2727 at the unconditional branch. */
6cdc0ccc
AM		 2728 if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
2729 irel->r_offset + 1))
252b5132
RH		 2730 continue;
2731
2732 /* Note that we've changed the relocs, section contents, etc. */
2733 elf_section_data (sec)->relocs = internal_relocs;
252b5132 2734 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2735 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 2736
2737 /* Reverse the condition of the first branch. */
2738 switch (code)
2739 {
010ac81f
KH		 2740 case 0xc8:
2741 code = 0xc9;
2742 break;
2743 case 0xc9:
2744 code = 0xc8;
2745 break;
2746 case 0xc0:
2747 code = 0xc2;
2748 break;
2749 case 0xc2:
2750 code = 0xc0;
2751 break;
2752 case 0xc3:
2753 code = 0xc1;
2754 break;
2755 case 0xc1:
2756 code = 0xc3;
2757 break;
2758 case 0xc4:
2759 code = 0xc6;
2760 break;
2761 case 0xc6:
2762 code = 0xc4;
2763 break;
2764 case 0xc7:
2765 code = 0xc5;
2766 break;
2767 case 0xc5:
2768 code = 0xc7;
2769 break;
2770 case 0xe8:
2771 code = 0xe9;
2772 break;
2773 case 0x9d:
2774 code = 0xe8;
2775 break;
2776 case 0xea:
2777 code = 0xeb;
2778 break;
2779 case 0xeb:
2780 code = 0xea;
2781 break;
252b5132
RH		 2782 }
2783 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
2784
2785 /* Set the reloc type and symbol for the first branch
2786 from the second branch. */
2787 irel->r_info = nrel->r_info;
2788
2789 /* Make the reloc for the second branch a null reloc. */
2790 nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
2791 R_MN10300_NONE);
2792
2793 /* Delete two bytes of data. */
2794 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2795 irel->r_offset + 1, 2))
2796 goto error_return;
2797
2798 /* That will change things, so, we should relax again.
2799 Note that this is not required, and it may be slow. */
b34976b6 2800 *again = TRUE;
252b5132
RH		 2801 }
2802
31f8dc8f
JL		 2803 /* Try to turn a 24 immediate, displacement or absolute address
2804 into a 8 immediate, displacement or absolute address. */
2805 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
2806 {
2807 bfd_vma value = symval;
2808 value += irel->r_addend;
2809
2810 /* See if the value will fit in 8 bits. */
010ac81f 2811 if ((long) value < 0x7f && (long) value > -0x80)
31f8dc8f
JL		 2812 {
2813 unsigned char code;
2814
2815 /* AM33 insns which have 24 operands are 6 bytes long and
2816 will have 0xfd as the first byte. */
2817
2818 /* Get the first opcode. */
2819 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2820
2821 if (code == 0xfd)
2822 {
010ac81f
KH		 2823 /* Get the second opcode. */
2824 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
31f8dc8f
JL		 2825
2826 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2827 equivalent instructions exists. */
3b36f7e6 2828 if (code != 0x6b && code != 0x7b
31f8dc8f
JL		 2829 && code != 0x8b && code != 0x9b
2830 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2831 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
2832 || (code & 0x0f) == 0x0e))
2833 {
2834 /* Not safe if the high bit is on as relaxing may
3b36f7e6
AM		 2835 move the value out of high mem and thus not fit
2836 in a signed 8bit value. This is currently over
2837 conservative. */
31f8dc8f
JL		 2838 if ((value & 0x80) == 0)
2839 {
2840 /* Note that we've changed the relocation contents,
2841 etc. */
2842 elf_section_data (sec)->relocs = internal_relocs;
31f8dc8f 2843 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2844 symtab_hdr->contents = (unsigned char *) isymbuf;
31f8dc8f
JL		 2845
2846 /* Fix the opcode. */
2847 bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
2848 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
2849
2850 /* Fix the relocation's type. */
010ac81f
KH		 2851 irel->r_info =
2852 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
2853 R_MN10300_8);
31f8dc8f
JL		 2854
2855 /* Delete two bytes of data. */
2856 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2857 irel->r_offset + 1, 2))
2858 goto error_return;
2859
2860 /* That will change things, so, we should relax
2861 again. Note that this is not required, and it
010ac81f 2862 may be slow. */
b34976b6 2863 *again = TRUE;
31f8dc8f
JL		 2864 break;
2865 }
2866 }
31f8dc8f
JL		 2867 }
2868 }
2869 }
252b5132
RH		 2870
2871 /* Try to turn a 32bit immediate, displacement or absolute address
2872 into a 16bit immediate, displacement or absolute address. */
03a12831
AO		 2873 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
2874 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
eb13e63f 2875 || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
252b5132
RH		 2876 {
2877 bfd_vma value = symval;
03a12831
AO		 2878
2879 if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
2880 {
2881 asection * sgot;
2882
2883 sgot = bfd_get_section_by_name (elf_hash_table (link_info)
2884 ->dynobj, ".got");
2885
2886 if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
2887 {
2888 value = sgot->output_offset;
2889
2890 if (h)
2891 value += h->root.got.offset;
2892 else
2893 value += (elf_local_got_offsets
2894 (abfd)[ELF32_R_SYM (irel->r_info)]);
2895 }
2896 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
2897 value -= sgot->output_section->vma;
2898 else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
2899 value = (sgot->output_section->vma
2900 - (sec->output_section->vma
2901 + sec->output_offset
2902 + irel->r_offset));
2903 else
2904 abort ();
2905 }
2906
252b5132
RH		 2907 value += irel->r_addend;
2908
31f8dc8f
JL		 2909 /* See if the value will fit in 24 bits.
2910 We allow any 16bit match here. We prune those we can't
2911 handle below. */
010ac81f 2912 if ((long) value < 0x7fffff && (long) value > -0x800000)
31f8dc8f
JL		 2913 {
2914 unsigned char code;
2915
2916 /* AM33 insns which have 32bit operands are 7 bytes long and
2917 will have 0xfe as the first byte. */
2918
2919 /* Get the first opcode. */
2920 code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
2921
2922 if (code == 0xfe)
2923 {
3b36f7e6
AM		 2924 /* Get the second opcode. */
2925 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
31f8dc8f
JL		 2926
2927 /* All the am33 32 -> 24 relaxing possibilities. */
2928 /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
2929 equivalent instructions exists. */
010ac81f 2930 if (code != 0x6b && code != 0x7b
31f8dc8f 2931 && code != 0x8b && code != 0x9b
03a12831
AO		 2932 && (ELF32_R_TYPE (irel->r_info)
2933 != (int) R_MN10300_GOTPC32)
31f8dc8f
JL		 2934 && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
2935 || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
2936 || (code & 0x0f) == 0x0e))
2937 {
2938 /* Not safe if the high bit is on as relaxing may
3b36f7e6
AM		 2939 move the value out of high mem and thus not fit
2940 in a signed 16bit value. This is currently over
2941 conservative. */
31f8dc8f
JL		 2942 if ((value & 0x8000) == 0)
2943 {
2944 /* Note that we've changed the relocation contents,
2945 etc. */
2946 elf_section_data (sec)->relocs = internal_relocs;
31f8dc8f 2947 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 2948 symtab_hdr->contents = (unsigned char *) isymbuf;
31f8dc8f
JL		 2949
2950 /* Fix the opcode. */
2951 bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
2952 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
2953
2954 /* Fix the relocation's type. */
010ac81f
KH		 2955 irel->r_info =
2956 ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 2957 (ELF32_R_TYPE (irel->r_info)
2958 == (int) R_MN10300_GOTOFF32)
2959 ? R_MN10300_GOTOFF24
2960 : (ELF32_R_TYPE (irel->r_info)
2961 == (int) R_MN10300_GOT32)
2962 ? R_MN10300_GOT24 :
010ac81f 2963 R_MN10300_24);
31f8dc8f
JL		 2964
2965 /* Delete one byte of data. */
2966 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
2967 irel->r_offset + 3, 1))
2968 goto error_return;
2969
2970 /* That will change things, so, we should relax
2971 again. Note that this is not required, and it
010ac81f 2972 may be slow. */
b34976b6 2973 *again = TRUE;
31f8dc8f
JL		 2974 break;
2975 }
2976 }
31f8dc8f
JL		 2977 }
2978 }
252b5132
RH		 2979
2980 /* See if the value will fit in 16 bits.
2981 We allow any 16bit match here. We prune those we can't
2982 handle below. */
010ac81f 2983 if ((long) value < 0x7fff && (long) value > -0x8000)
252b5132
RH		 2984 {
2985 unsigned char code;
2986
2987 /* Most insns which have 32bit operands are 6 bytes long;
2988 exceptions are pcrel insns and bit insns.
2989
2990 We handle pcrel insns above. We don't bother trying
2991 to handle the bit insns here.
2992
2993 The first byte of the remaining insns will be 0xfc. */
2994
2995 /* Get the first opcode. */
2996 code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
2997
2998 if (code != 0xfc)
2999 continue;
3000
3001 /* Get the second opcode. */
3002 code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
3003
3004 if ((code & 0xf0) < 0x80)
3005 switch (code & 0xf0)
3006 {
3007 /* mov (d32,am),dn -> mov (d32,am),dn
3008 mov dm,(d32,am) -> mov dn,(d32,am)
3009 mov (d32,am),an -> mov (d32,am),an
3010 mov dm,(d32,am) -> mov dn,(d32,am)
3011 movbu (d32,am),dn -> movbu (d32,am),dn
3012 movbu dm,(d32,am) -> movbu dn,(d32,am)
3013 movhu (d32,am),dn -> movhu (d32,am),dn
3014 movhu dm,(d32,am) -> movhu dn,(d32,am) */
3015 case 0x00:
3016 case 0x10:
3017 case 0x20:
3018 case 0x30:
3019 case 0x40:
3020 case 0x50:
3021 case 0x60:
3022 case 0x70:
3023 /* Not safe if the high bit is on as relaxing may
3024 move the value out of high mem and thus not fit
3025 in a signed 16bit value. */
3026 if (code == 0xcc
3027 && (value & 0x8000))
3028 continue;
3029
3030 /* Note that we've changed the relocation contents, etc. */
3031 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3032 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3033 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3034
3035 /* Fix the opcode. */
3036 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3037 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3038
3039 /* Fix the relocation's type. */
3040 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3041 (ELF32_R_TYPE (irel->r_info)
3042 == (int) R_MN10300_GOTOFF32)
3043 ? R_MN10300_GOTOFF16
3044 : (ELF32_R_TYPE (irel->r_info)
3045 == (int) R_MN10300_GOT32)
3046 ? R_MN10300_GOT16
3047 : (ELF32_R_TYPE (irel->r_info)
3048 == (int) R_MN10300_GOTPC32)
3049 ? R_MN10300_GOTPC16 :
252b5132
RH		 3050 R_MN10300_16);
3051
3052 /* Delete two bytes of data. */
3053 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3054 irel->r_offset + 2, 2))
3055 goto error_return;
3056
3057 /* That will change things, so, we should relax again.
3058 Note that this is not required, and it may be slow. */
b34976b6 3059 *again = TRUE;
252b5132
RH		 3060 break;
3061 }
3062 else if ((code & 0xf0) == 0x80
3063 || (code & 0xf0) == 0x90)
3064 switch (code & 0xf3)
3065 {
3066 /* mov dn,(abs32) -> mov dn,(abs16)
3067 movbu dn,(abs32) -> movbu dn,(abs16)
3068 movhu dn,(abs32) -> movhu dn,(abs16) */
3069 case 0x81:
3070 case 0x82:
3071 case 0x83:
3072 /* Note that we've changed the relocation contents, etc. */
3073 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3074 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3075 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3076
3077 if ((code & 0xf3) == 0x81)
3078 code = 0x01 + (code & 0x0c);
3079 else if ((code & 0xf3) == 0x82)
3080 code = 0x02 + (code & 0x0c);
3081 else if ((code & 0xf3) == 0x83)
3082 code = 0x03 + (code & 0x0c);
3083 else
3084 abort ();
3085
3086 /* Fix the opcode. */
3087 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3088
3089 /* Fix the relocation's type. */
3090 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3091 (ELF32_R_TYPE (irel->r_info)
3092 == (int) R_MN10300_GOTOFF32)
3093 ? R_MN10300_GOTOFF16
3094 : (ELF32_R_TYPE (irel->r_info)
3095 == (int) R_MN10300_GOT32)
3096 ? R_MN10300_GOT16
3097 : (ELF32_R_TYPE (irel->r_info)
3098 == (int) R_MN10300_GOTPC32)
3099 ? R_MN10300_GOTPC16 :
252b5132
RH		 3100 R_MN10300_16);
3101
3102 /* The opcode got shorter too, so we have to fix the
3103 addend and offset too! */
3104 irel->r_offset -= 1;
3105
3106 /* Delete three bytes of data. */
3107 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3108 irel->r_offset + 1, 3))
3109 goto error_return;
3110
3111 /* That will change things, so, we should relax again.
3112 Note that this is not required, and it may be slow. */
b34976b6 3113 *again = TRUE;
252b5132
RH		 3114 break;
3115
3116 /* mov am,(abs32) -> mov am,(abs16)
3117 mov am,(d32,sp) -> mov am,(d16,sp)
3118 mov dm,(d32,sp) -> mov dm,(d32,sp)
3119 movbu dm,(d32,sp) -> movbu dm,(d32,sp)
3120 movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
3121 case 0x80:
3122 case 0x90:
3123 case 0x91:
3124 case 0x92:
3125 case 0x93:
2a0fa943
AO		 3126 /* sp-based offsets are zero-extended. */
3127 if (code >= 0x90 && code <= 0x93
3128 && (long)value < 0)
3129 continue;
3130
252b5132
RH		 3131 /* Note that we've changed the relocation contents, etc. */
3132 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3133 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3134 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3135
3136 /* Fix the opcode. */
3137 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3138 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3139
3140 /* Fix the relocation's type. */
3141 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3142 (ELF32_R_TYPE (irel->r_info)
3143 == (int) R_MN10300_GOTOFF32)
3144 ? R_MN10300_GOTOFF16
3145 : (ELF32_R_TYPE (irel->r_info)
3146 == (int) R_MN10300_GOT32)
3147 ? R_MN10300_GOT16
3148 : (ELF32_R_TYPE (irel->r_info)
3149 == (int) R_MN10300_GOTPC32)
3150 ? R_MN10300_GOTPC16 :
252b5132
RH		 3151 R_MN10300_16);
3152
3153 /* Delete two bytes of data. */
3154 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3155 irel->r_offset + 2, 2))
3156 goto error_return;
3157
3158 /* That will change things, so, we should relax again.
3159 Note that this is not required, and it may be slow. */
b34976b6 3160 *again = TRUE;
252b5132
RH		 3161 break;
3162 }
3163 else if ((code & 0xf0) < 0xf0)
3164 switch (code & 0xfc)
3165 {
3166 /* mov imm32,dn -> mov imm16,dn
3167 mov imm32,an -> mov imm16,an
3168 mov (abs32),dn -> mov (abs16),dn
3169 movbu (abs32),dn -> movbu (abs16),dn
3170 movhu (abs32),dn -> movhu (abs16),dn */
3171 case 0xcc:
3172 case 0xdc:
3173 case 0xa4:
3174 case 0xa8:
3175 case 0xac:
3176 /* Not safe if the high bit is on as relaxing may
3177 move the value out of high mem and thus not fit
3178 in a signed 16bit value. */
3179 if (code == 0xcc
3180 && (value & 0x8000))
3181 continue;
3182
2a0fa943
AO		 3183 /* mov imm16, an zero-extends the immediate. */
3184 if (code == 0xdc
3185 && (long)value < 0)
3186 continue;
3187
252b5132
RH		 3188 /* Note that we've changed the relocation contents, etc. */
3189 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3190 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3191 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3192
3193 if ((code & 0xfc) == 0xcc)
3194 code = 0x2c + (code & 0x03);
3195 else if ((code & 0xfc) == 0xdc)
3196 code = 0x24 + (code & 0x03);
3197 else if ((code & 0xfc) == 0xa4)
3198 code = 0x30 + (code & 0x03);
3199 else if ((code & 0xfc) == 0xa8)
3200 code = 0x34 + (code & 0x03);
3201 else if ((code & 0xfc) == 0xac)
3202 code = 0x38 + (code & 0x03);
3203 else
3204 abort ();
3205
3206 /* Fix the opcode. */
3207 bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
3208
3209 /* Fix the relocation's type. */
3210 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3211 (ELF32_R_TYPE (irel->r_info)
3212 == (int) R_MN10300_GOTOFF32)
3213 ? R_MN10300_GOTOFF16
3214 : (ELF32_R_TYPE (irel->r_info)
3215 == (int) R_MN10300_GOT32)
3216 ? R_MN10300_GOT16
3217 : (ELF32_R_TYPE (irel->r_info)
3218 == (int) R_MN10300_GOTPC32)
3219 ? R_MN10300_GOTPC16 :
252b5132
RH		 3220 R_MN10300_16);
3221
3222 /* The opcode got shorter too, so we have to fix the
3223 addend and offset too! */
3224 irel->r_offset -= 1;
3225
3226 /* Delete three bytes of data. */
3227 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3228 irel->r_offset + 1, 3))
3229 goto error_return;
3230
3231 /* That will change things, so, we should relax again.
3232 Note that this is not required, and it may be slow. */
b34976b6 3233 *again = TRUE;
252b5132
RH		 3234 break;
3235
3236 /* mov (abs32),an -> mov (abs16),an
2a0fa943
AO		 3237 mov (d32,sp),an -> mov (d16,sp),an
3238 mov (d32,sp),dn -> mov (d16,sp),dn
3239 movbu (d32,sp),dn -> movbu (d16,sp),dn
3240 movhu (d32,sp),dn -> movhu (d16,sp),dn
252b5132
RH		 3241 add imm32,dn -> add imm16,dn
3242 cmp imm32,dn -> cmp imm16,dn
3243 add imm32,an -> add imm16,an
3244 cmp imm32,an -> cmp imm16,an
2a0fa943
AO		 3245 and imm32,dn -> and imm16,dn
3246 or imm32,dn -> or imm16,dn
3247 xor imm32,dn -> xor imm16,dn
3248 btst imm32,dn -> btst imm16,dn */
252b5132
RH		 3249
3250 case 0xa0:
3251 case 0xb0:
3252 case 0xb1:
3253 case 0xb2:
3254 case 0xb3:
3255 case 0xc0:
3256 case 0xc8:
3257
3258 case 0xd0:
3259 case 0xd8:
3260 case 0xe0:
3261 case 0xe1:
3262 case 0xe2:
3263 case 0xe3:
2a0fa943
AO		 3264 /* cmp imm16, an zero-extends the immediate. */
3265 if (code == 0xdc
3266 && (long)value < 0)
3267 continue;
3268
3269 /* So do sp-based offsets. */
3270 if (code >= 0xb0 && code <= 0xb3
3271 && (long)value < 0)
3272 continue;
3273
252b5132
RH		 3274 /* Note that we've changed the relocation contents, etc. */
3275 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3276 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3277 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3278
3279 /* Fix the opcode. */
3280 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3281 bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
3282
3283 /* Fix the relocation's type. */
3284 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3285 (ELF32_R_TYPE (irel->r_info)
3286 == (int) R_MN10300_GOTOFF32)
3287 ? R_MN10300_GOTOFF16
3288 : (ELF32_R_TYPE (irel->r_info)
3289 == (int) R_MN10300_GOT32)
3290 ? R_MN10300_GOT16
3291 : (ELF32_R_TYPE (irel->r_info)
3292 == (int) R_MN10300_GOTPC32)
3293 ? R_MN10300_GOTPC16 :
252b5132
RH		 3294 R_MN10300_16);
3295
3296 /* Delete two bytes of data. */
3297 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3298 irel->r_offset + 2, 2))
3299 goto error_return;
3300
3301 /* That will change things, so, we should relax again.
3302 Note that this is not required, and it may be slow. */
b34976b6 3303 *again = TRUE;
252b5132
RH		 3304 break;
3305 }
3306 else if (code == 0xfe)
3307 {
3308 /* add imm32,sp -> add imm16,sp */
3309
3310 /* Note that we've changed the relocation contents, etc. */
3311 elf_section_data (sec)->relocs = internal_relocs;
252b5132 3312 elf_section_data (sec)->this_hdr.contents = contents;
6cdc0ccc 3313 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132
RH		 3314
3315 /* Fix the opcode. */
3316 bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
3317 bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
3318
3319 /* Fix the relocation's type. */
3320 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
03a12831
AO		 3321 (ELF32_R_TYPE (irel->r_info)
3322 == (int) R_MN10300_GOT32)
3323 ? R_MN10300_GOT16
3324 : (ELF32_R_TYPE (irel->r_info)
3325 == (int) R_MN10300_GOTOFF32)
3326 ? R_MN10300_GOTOFF16
3327 : (ELF32_R_TYPE (irel->r_info)
3328 == (int) R_MN10300_GOTPC32)
3329 ? R_MN10300_GOTPC16 :
010ac81f 3330 R_MN10300_16);
252b5132
RH		 3331
3332 /* Delete two bytes of data. */
3333 if (!mn10300_elf_relax_delete_bytes (abfd, sec,
3334 irel->r_offset + 2, 2))
3335 goto error_return;
3336
3337 /* That will change things, so, we should relax again.
3338 Note that this is not required, and it may be slow. */
b34976b6 3339 *again = TRUE;
252b5132
RH		 3340 break;
3341 }
3342 }
3343 }
3344 }
3345
6cdc0ccc
AM		 3346 if (isymbuf != NULL
3347 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132
RH		 3348 {
3349 if (! link_info->keep_memory)
6cdc0ccc 3350 free (isymbuf);
252b5132
RH		 3351 else
3352 {
6cdc0ccc
AM		 3353 /* Cache the symbols for elf_link_input_bfd. */
3354 symtab_hdr->contents = (unsigned char *) isymbuf;
252b5132 3355 }
9ad5cbcf
AM		 3356 }
3357
6cdc0ccc
AM		 3358 if (contents != NULL
3359 && elf_section_data (sec)->this_hdr.contents != contents)
252b5132
RH		 3360 {
3361 if (! link_info->keep_memory)
6cdc0ccc
AM		 3362 free (contents);
3363 else
252b5132 3364 {
6cdc0ccc
AM		 3365 /* Cache the section contents for elf_link_input_bfd. */
3366 elf_section_data (sec)->this_hdr.contents = contents;
252b5132 3367 }
252b5132
RH		 3368 }
3369
6cdc0ccc
AM		 3370 if (internal_relocs != NULL
3371 && elf_section_data (sec)->relocs != internal_relocs)
3372 free (internal_relocs);
3373
b34976b6 3374 return TRUE;
252b5132
RH		 3375
3376 error_return:
6cdc0ccc
AM		 3377 if (isymbuf != NULL
3378 && symtab_hdr->contents != (unsigned char *) isymbuf)
3379 free (isymbuf);
3380 if (contents != NULL
3381 && elf_section_data (section)->this_hdr.contents != contents)
3382 free (contents);
3383 if (internal_relocs != NULL
3384 && elf_section_data (section)->relocs != internal_relocs)
3385 free (internal_relocs);
9ad5cbcf 3386
b34976b6 3387 return FALSE;
252b5132
RH		 3388}
3389
3390/* Compute the stack size and movm arguments for the function
3391 referred to by HASH at address ADDR in section with
3392 contents CONTENTS, store the information in the hash table. */
3393static void
3394compute_function_info (abfd, hash, addr, contents)
3395 bfd *abfd;
3396 struct elf32_mn10300_link_hash_entry *hash;
3397 bfd_vma addr;
3398 unsigned char *contents;
3399{
3400 unsigned char byte1, byte2;
3401 /* We only care about a very small subset of the possible prologue
3402 sequences here. Basically we look for:
3403
3404 movm [d2,d3,a2,a3],sp (optional)
3405 add <size>,sp (optional, and only for sizes which fit in an unsigned
3406 8 bit number)
3407
3408 If we find anything else, we quit. */
3409
3410 /* Look for movm [regs],sp */
3411 byte1 = bfd_get_8 (abfd, contents + addr);
3412 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3413
3414 if (byte1 == 0xcf)
3415 {
3416 hash->movm_args = byte2;
3417 addr += 2;
3418 byte1 = bfd_get_8 (abfd, contents + addr);
3419 byte2 = bfd_get_8 (abfd, contents + addr + 1);
3420 }
3421
3422 /* Now figure out how much stack space will be allocated by the movm
4cc11e76 3423 instruction. We need this kept separate from the function's normal
252b5132
RH		 3424 stack space. */
3425 if (hash->movm_args)
3426 {
3427 /* Space for d2. */
3428 if (hash->movm_args & 0x80)
3429 hash->movm_stack_size += 4;
3430
3431 /* Space for d3. */
3432 if (hash->movm_args & 0x40)
3433 hash->movm_stack_size += 4;
3434
3435 /* Space for a2. */
3436 if (hash->movm_args & 0x20)
3437 hash->movm_stack_size += 4;
3438
3439 /* Space for a3. */
3440 if (hash->movm_args & 0x10)
3441 hash->movm_stack_size += 4;
3442
3443 /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
3444 if (hash->movm_args & 0x08)
3445 hash->movm_stack_size += 8 * 4;
3446
b08fa4d3
AO		 3447 if (bfd_get_mach (abfd) == bfd_mach_am33
3448 || bfd_get_mach (abfd) == bfd_mach_am33_2)
31f8dc8f
JL		 3449 {
3450 /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
3451 if (hash->movm_args & 0x1)
3452 hash->movm_stack_size += 6 * 4;
3453
3454 /* exreg1 space. e4, e5, e6, e7 */
3455 if (hash->movm_args & 0x2)
3456 hash->movm_stack_size += 4 * 4;
3457
3458 /* exreg0 space. e2, e3 */
3459 if (hash->movm_args & 0x4)
3460 hash->movm_stack_size += 2 * 4;
3461 }
252b5132
RH		 3462 }
3463
3464 /* Now look for the two stack adjustment variants. */
3465 if (byte1 == 0xf8 && byte2 == 0xfe)
3466 {
3467 int temp = bfd_get_8 (abfd, contents + addr + 2);
3468 temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
3469
3470 hash->stack_size = -temp;
3471 }
3472 else if (byte1 == 0xfa && byte2 == 0xfe)
3473 {
3474 int temp = bfd_get_16 (abfd, contents + addr + 2);
3475 temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
3476 temp = -temp;
3477
3478 if (temp < 255)
3479 hash->stack_size = temp;
3480 }
3481
3482 /* If the total stack to be allocated by the call instruction is more
3483 than 255 bytes, then we can't remove the stack adjustment by using
3484 "call" (we might still be able to remove the "movm" instruction. */
3485 if (hash->stack_size + hash->movm_stack_size > 255)
3486 hash->stack_size = 0;
3487
3488 return;
3489}
3490
3491/* Delete some bytes from a section while relaxing. */
3492
b34976b6 3493static bfd_boolean
252b5132
RH		 3494mn10300_elf_relax_delete_bytes (abfd, sec, addr, count)
3495 bfd *abfd;
3496 asection *sec;
3497 bfd_vma addr;
3498 int count;
3499{
3500 Elf_Internal_Shdr *symtab_hdr;
9ad5cbcf 3501 unsigned int sec_shndx;
252b5132
RH		 3502 bfd_byte *contents;
3503 Elf_Internal_Rela *irel, *irelend;
3504 Elf_Internal_Rela *irelalign;
3505 bfd_vma toaddr;
6cdc0ccc 3506 Elf_Internal_Sym *isym, *isymend;
9ad5cbcf
AM		 3507 struct elf_link_hash_entry **sym_hashes;
3508 struct elf_link_hash_entry **end_hashes;
3509 unsigned int symcount;
252b5132 3510
9ad5cbcf 3511 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
252b5132
RH		 3512
3513 contents = elf_section_data (sec)->this_hdr.contents;
3514
3515 /* The deletion must stop at the next ALIGN reloc for an aligment
3516 power larger than the number of bytes we are deleting. */
3517
3518 irelalign = NULL;
eea6121a 3519 toaddr = sec->size;
252b5132
RH		 3520
3521 irel = elf_section_data (sec)->relocs;
3522 irelend = irel + sec->reloc_count;
3523
3524 /* Actually delete the bytes. */
dc810e39
AM		 3525 memmove (contents + addr, contents + addr + count,
3526 (size_t) (toaddr - addr - count));
eea6121a 3527 sec->size -= count;
252b5132
RH		 3528
3529 /* Adjust all the relocs. */
3530 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
3531 {
3532 /* Get the new reloc address. */
3533 if ((irel->r_offset > addr
3534 && irel->r_offset < toaddr))
3535 irel->r_offset -= count;
3536 }
3537
3538 /* Adjust the local symbols defined in this section. */
6cdc0ccc
AM		 3539 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3540 isym = (Elf_Internal_Sym *) symtab_hdr->contents;
3541 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
252b5132 3542 {
6cdc0ccc
AM		 3543 if (isym->st_shndx == sec_shndx
3544 && isym->st_value > addr
3545 && isym->st_value < toaddr)
3546 isym->st_value -= count;
252b5132
RH		 3547 }
3548
3549 /* Now adjust the global symbols defined in this section. */
9ad5cbcf
AM		 3550 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3551 - symtab_hdr->sh_info);
3552 sym_hashes = elf_sym_hashes (abfd);
3553 end_hashes = sym_hashes + symcount;
3554 for (; sym_hashes < end_hashes; sym_hashes++)
252b5132 3555 {
9ad5cbcf
AM		 3556 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3557 if ((sym_hash->root.type == bfd_link_hash_defined
3558 || sym_hash->root.type == bfd_link_hash_defweak)
3559 && sym_hash->root.u.def.section == sec
3560 && sym_hash->root.u.def.value > addr
3561 && sym_hash->root.u.def.value < toaddr)
252b5132 3562 {
9ad5cbcf 3563 sym_hash->root.u.def.value -= count;
252b5132
RH		 3564 }
3565 }
3566
b34976b6 3567 return TRUE;
252b5132
RH		 3568}
3569
b34976b6
AM		 3570/* Return TRUE if a symbol exists at the given address, else return
3571 FALSE. */
3572static bfd_boolean
6cdc0ccc 3573mn10300_elf_symbol_address_p (abfd, sec, isym, addr)
252b5132
RH		 3574 bfd *abfd;
3575 asection *sec;
6cdc0ccc 3576 Elf_Internal_Sym *isym;
252b5132
RH		 3577 bfd_vma addr;
3578{
3579 Elf_Internal_Shdr *symtab_hdr;
9ad5cbcf 3580 unsigned int sec_shndx;
6cdc0ccc 3581 Elf_Internal_Sym *isymend;
9ad5cbcf
AM		 3582 struct elf_link_hash_entry **sym_hashes;
3583 struct elf_link_hash_entry **end_hashes;
3584 unsigned int symcount;
252b5132 3585
9ad5cbcf 3586 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
252b5132
RH		 3587
3588 /* Examine all the symbols. */
9ad5cbcf 3589 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc 3590 for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
252b5132 3591 {
6cdc0ccc
AM		 3592 if (isym->st_shndx == sec_shndx
3593 && isym->st_value == addr)
b34976b6 3594 return TRUE;
252b5132
RH		 3595 }
3596
9ad5cbcf
AM		 3597 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
3598 - symtab_hdr->sh_info);
3599 sym_hashes = elf_sym_hashes (abfd);
3600 end_hashes = sym_hashes + symcount;
3601 for (; sym_hashes < end_hashes; sym_hashes++)
252b5132 3602 {
9ad5cbcf
AM		 3603 struct elf_link_hash_entry *sym_hash = *sym_hashes;
3604 if ((sym_hash->root.type == bfd_link_hash_defined
3605 || sym_hash->root.type == bfd_link_hash_defweak)
3606 && sym_hash->root.u.def.section == sec
3607 && sym_hash->root.u.def.value == addr)
b34976b6 3608 return TRUE;
252b5132 3609 }
9ad5cbcf 3610
b34976b6 3611 return FALSE;
252b5132
RH		 3612}
3613
3614/* This is a version of bfd_generic_get_relocated_section_contents
3615 which uses mn10300_elf_relocate_section. */
3616
3617static bfd_byte *
3618mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
1049f94e 3619 data, relocatable, symbols)
252b5132
RH		 3620 bfd *output_bfd;
3621 struct bfd_link_info *link_info;
3622 struct bfd_link_order *link_order;
3623 bfd_byte *data;
1049f94e 3624 bfd_boolean relocatable;
252b5132
RH		 3625 asymbol **symbols;
3626{
3627 Elf_Internal_Shdr *symtab_hdr;
3628 asection *input_section = link_order->u.indirect.section;
3629 bfd *input_bfd = input_section->owner;
3630 asection **sections = NULL;
3631 Elf_Internal_Rela *internal_relocs = NULL;
6cdc0ccc 3632 Elf_Internal_Sym *isymbuf = NULL;
252b5132
RH		 3633
3634 /* We only need to handle the case of relaxing, or of having a
3635 particular set of section contents, specially. */
1049f94e 3636 if (relocatable
252b5132
RH		 3637 || elf_section_data (input_section)->this_hdr.contents == NULL)
3638 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
3639 link_order, data,
1049f94e 3640 relocatable,
252b5132
RH		 3641 symbols);
3642
3643 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3644
3645 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
eea6121a 3646 (size_t) input_section->size);
252b5132
RH		 3647
3648 if ((input_section->flags & SEC_RELOC) != 0
3649 && input_section->reloc_count > 0)
3650 {
252b5132 3651 asection **secpp;
6cdc0ccc 3652 Elf_Internal_Sym *isym, *isymend;
9ad5cbcf 3653 bfd_size_type amt;
252b5132 3654
45d6a902 3655 internal_relocs = (_bfd_elf_link_read_relocs
252b5132 3656 (input_bfd, input_section, (PTR) NULL,
b34976b6 3657 (Elf_Internal_Rela *) NULL, FALSE));
252b5132
RH		 3658 if (internal_relocs == NULL)
3659 goto error_return;
3660
6cdc0ccc
AM		 3661 if (symtab_hdr->sh_info != 0)
3662 {
3663 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
3664 if (isymbuf == NULL)
3665 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3666 symtab_hdr->sh_info, 0,
3667 NULL, NULL, NULL);
3668 if (isymbuf == NULL)
3669 goto error_return;
3670 }
252b5132 3671
9ad5cbcf
AM		 3672 amt = symtab_hdr->sh_info;
3673 amt *= sizeof (asection *);
3674 sections = (asection **) bfd_malloc (amt);
3675 if (sections == NULL && amt != 0)
252b5132
RH		 3676 goto error_return;
3677
6cdc0ccc
AM		 3678 isymend = isymbuf + symtab_hdr->sh_info;
3679 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
252b5132
RH		 3680 {
3681 asection *isec;
3682
6cdc0ccc 3683 if (isym->st_shndx == SHN_UNDEF)
252b5132 3684 isec = bfd_und_section_ptr;
6cdc0ccc 3685 else if (isym->st_shndx == SHN_ABS)
252b5132 3686 isec = bfd_abs_section_ptr;
6cdc0ccc 3687 else if (isym->st_shndx == SHN_COMMON)
252b5132
RH		 3688 isec = bfd_com_section_ptr;
3689 else
6cdc0ccc 3690 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
252b5132
RH		 3691
3692 *secpp = isec;
3693 }
3694
3695 if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
3696 input_section, data, internal_relocs,
6cdc0ccc 3697 isymbuf, sections))
252b5132
RH		 3698 goto error_return;
3699
3700 if (sections != NULL)
3701 free (sections);
6cdc0ccc
AM		 3702 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3703 free (isymbuf);
252b5132
RH		 3704 if (internal_relocs != elf_section_data (input_section)->relocs)
3705 free (internal_relocs);
252b5132
RH		 3706 }
3707
3708 return data;
3709
3710 error_return:
6cdc0ccc
AM		 3711 if (sections != NULL)
3712 free (sections);
3713 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
3714 free (isymbuf);
252b5132
RH		 3715 if (internal_relocs != NULL
3716 && internal_relocs != elf_section_data (input_section)->relocs)
3717 free (internal_relocs);
252b5132
RH		 3718 return NULL;
3719}
3720
3721/* Assorted hash table functions. */
3722
3723/* Initialize an entry in the link hash table. */
3724
3725/* Create an entry in an MN10300 ELF linker hash table. */
3726
3727static struct bfd_hash_entry *
3728elf32_mn10300_link_hash_newfunc (entry, table, string)
3729 struct bfd_hash_entry *entry;
3730 struct bfd_hash_table *table;
3731 const char *string;
3732{
3733 struct elf32_mn10300_link_hash_entry *ret =
3734 (struct elf32_mn10300_link_hash_entry *) entry;
3735
3736 /* Allocate the structure if it has not already been allocated by a
3737 subclass. */
3738 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3739 ret = ((struct elf32_mn10300_link_hash_entry *)
3740 bfd_hash_allocate (table,
3741 sizeof (struct elf32_mn10300_link_hash_entry)));
3742 if (ret == (struct elf32_mn10300_link_hash_entry *) NULL)
3743 return (struct bfd_hash_entry *) ret;
3744
3745 /* Call the allocation method of the superclass. */
3746 ret = ((struct elf32_mn10300_link_hash_entry *)
3747 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
3748 table, string));
3749 if (ret != (struct elf32_mn10300_link_hash_entry *) NULL)
3750 {
3751 ret->direct_calls = 0;
3752 ret->stack_size = 0;
5354b572 3753 ret->movm_args = 0;
252b5132
RH		 3754 ret->movm_stack_size = 0;
3755 ret->flags = 0;
eb13e63f 3756 ret->value = 0;
252b5132
RH		 3757 }
3758
3759 return (struct bfd_hash_entry *) ret;
3760}
3761
3762/* Create an mn10300 ELF linker hash table. */
3763
3764static struct bfd_link_hash_table *
3765elf32_mn10300_link_hash_table_create (abfd)
3766 bfd *abfd;
3767{
3768 struct elf32_mn10300_link_hash_table *ret;
dc810e39 3769 bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table);
252b5132 3770
e2d34d7d 3771 ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
252b5132
RH		 3772 if (ret == (struct elf32_mn10300_link_hash_table *) NULL)
3773 return NULL;
3774
66eb6687
AM		 3775 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
3776 elf32_mn10300_link_hash_newfunc,
3777 sizeof (struct elf32_mn10300_link_hash_entry)))
252b5132 3778 {
e2d34d7d 3779 free (ret);
252b5132
RH		 3780 return NULL;
3781 }
3782
3783 ret->flags = 0;
dc810e39 3784 amt = sizeof (struct elf_link_hash_table);
252b5132 3785 ret->static_hash_table
e2d34d7d 3786 = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt);
252b5132
RH		 3787 if (ret->static_hash_table == NULL)
3788 {
e2d34d7d 3789 free (ret);
252b5132
RH		 3790 return NULL;
3791 }
3792
66eb6687
AM		 3793 if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
3794 elf32_mn10300_link_hash_newfunc,
3795 sizeof (struct elf32_mn10300_link_hash_entry)))
252b5132 3796 {
e2d34d7d
DJ		 3797 free (ret->static_hash_table);
3798 free (ret);
252b5132
RH		 3799 return NULL;
3800 }
3801 return &ret->root.root;
3802}
3803
e2d34d7d
DJ		 3804/* Free an mn10300 ELF linker hash table. */
3805
3806static void
3807elf32_mn10300_link_hash_table_free (hash)
3808 struct bfd_link_hash_table *hash;
3809{
3810 struct elf32_mn10300_link_hash_table *ret
3811 = (struct elf32_mn10300_link_hash_table *) hash;
3812
3813 _bfd_generic_link_hash_table_free
3814 ((struct bfd_link_hash_table *) ret->static_hash_table);
3815 _bfd_generic_link_hash_table_free
3816 ((struct bfd_link_hash_table *) ret);
3817}
3818
dc810e39 3819static unsigned long
252b5132
RH		 3820elf_mn10300_mach (flags)
3821 flagword flags;
3822{
3823 switch (flags & EF_MN10300_MACH)
3824 {
010ac81f
KH		 3825 case E_MN10300_MACH_MN10300:
3826 default:
3827 return bfd_mach_mn10300;
252b5132 3828
010ac81f
KH		 3829 case E_MN10300_MACH_AM33:
3830 return bfd_mach_am33;
b08fa4d3
AO		 3831
3832 case E_MN10300_MACH_AM33_2:
3833 return bfd_mach_am33_2;
252b5132
RH		 3834 }
3835}
3836
3837/* The final processing done just before writing out a MN10300 ELF object
3838 file. This gets the MN10300 architecture right based on the machine
3839 number. */
3840
252b5132
RH		 3841void
3842_bfd_mn10300_elf_final_write_processing (abfd, linker)
3843 bfd *abfd;
b34976b6 3844 bfd_boolean linker ATTRIBUTE_UNUSED;
252b5132
RH		 3845{
3846 unsigned long val;
252b5132
RH		 3847
3848 switch (bfd_get_mach (abfd))
3849 {
010ac81f
KH		 3850 default:
3851 case bfd_mach_mn10300:
3852 val = E_MN10300_MACH_MN10300;
3853 break;
3854
3855 case bfd_mach_am33:
3856 val = E_MN10300_MACH_AM33;
3857 break;
b08fa4d3
AO		 3858
3859 case bfd_mach_am33_2:
3860 val = E_MN10300_MACH_AM33_2;
3861 break;
252b5132
RH		 3862 }
3863
3864 elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
3865 elf_elfheader (abfd)->e_flags |= val;
3866}
3867
b34976b6 3868bfd_boolean
252b5132
RH		 3869_bfd_mn10300_elf_object_p (abfd)
3870 bfd *abfd;
3871{
3872 bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
010ac81f 3873 elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
b34976b6 3874 return TRUE;
252b5132
RH		 3875}
3876
3877/* Merge backend specific data from an object file to the output
3878 object file when linking. */
3879
b34976b6 3880bfd_boolean
252b5132
RH		 3881_bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd)
3882 bfd *ibfd;
3883 bfd *obfd;
3884{
3885 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3886 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 3887 return TRUE;
252b5132
RH		 3888
3889 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3890 && bfd_get_mach (obfd) < bfd_get_mach (ibfd))
3891 {
3892 if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3b36f7e6
AM		 3893 bfd_get_mach (ibfd)))
3894 return FALSE;
252b5132
RH		 3895 }
3896
b34976b6 3897 return TRUE;
252b5132
RH		 3898}
3899
03a12831
AO		 3900#define PLT0_ENTRY_SIZE 15
3901#define PLT_ENTRY_SIZE 20
3902#define PIC_PLT_ENTRY_SIZE 24
3903
3904static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
3905{
3906 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
3907 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
3908 0xf0, 0xf4, /* jmp (a0) */
3909};
3910
3911static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
3912{
3913 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
3914 0xf0, 0xf4, /* jmp (a0) */
3915 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3916 0xdc, 0, 0, 0, 0, /* jmp .plt0 */
3917};
3918
3919static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
3920{
3921 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
3922 0xf0, 0xf4, /* jmp (a0) */
3923 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
3924 0xf8, 0x22, 8, /* mov (8,a2),a0 */
3925 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
3926 0xf0, 0xf4, /* jmp (a0) */
3927};
3928
3929/* Return size of the first PLT entry. */
3930#define elf_mn10300_sizeof_plt0(info) \
3931 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
3932
3933/* Return size of a PLT entry. */
3934#define elf_mn10300_sizeof_plt(info) \
3935 (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
3936
3937/* Return offset of the PLT0 address in an absolute PLT entry. */
3938#define elf_mn10300_plt_plt0_offset(info) 16
3939
3940/* Return offset of the linker in PLT0 entry. */
3941#define elf_mn10300_plt0_linker_offset(info) 2
3942
3943/* Return offset of the GOT id in PLT0 entry. */
3944#define elf_mn10300_plt0_gotid_offset(info) 9
3945
4cc11e76 3946/* Return offset of the temporary in PLT entry */
03a12831
AO		 3947#define elf_mn10300_plt_temp_offset(info) 8
3948
3949/* Return offset of the symbol in PLT entry. */
3950#define elf_mn10300_plt_symbol_offset(info) 2
3951
3952/* Return offset of the relocation in PLT entry. */
3953#define elf_mn10300_plt_reloc_offset(info) 11
3954
3955/* The name of the dynamic interpreter. This is put in the .interp
3956 section. */
3957
3958#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
3959
3960/* Create dynamic sections when linking against a dynamic object. */
3961
3962static bfd_boolean
3963_bfd_mn10300_elf_create_dynamic_sections (abfd, info)
3964 bfd *abfd;
3965 struct bfd_link_info *info;
3966{
3967 flagword flags;
3968 asection * s;
9c5bfbb7 3969 const struct elf_backend_data * bed = get_elf_backend_data (abfd);
03a12831
AO		 3970 int ptralign = 0;
3971
3972 switch (bed->s->arch_size)
3973 {
3974 case 32:
3975 ptralign = 2;
3976 break;
3977
3978 case 64:
3979 ptralign = 3;
3980 break;
3981
3982 default:
3983 bfd_set_error (bfd_error_bad_value);
3984 return FALSE;
3985 }
3986
3987 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3988 .rel[a].bss sections. */
3989
3990 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3991 | SEC_LINKER_CREATED);
3992
3496cb2a
L		 3993 s = bfd_make_section_with_flags (abfd,
3994 (bed->default_use_rela_p
3995 ? ".rela.plt" : ".rel.plt"),
3996 flags | SEC_READONLY);
03a12831 3997 if (s == NULL
03a12831
AO		 3998 || ! bfd_set_section_alignment (abfd, s, ptralign))
3999 return FALSE;
4000
4001 if (! _bfd_mn10300_elf_create_got_section (abfd, info))
4002 return FALSE;
4003
4004 {
4005 const char * secname;
4006 char * relname;
4007 flagword secflags;
4008 asection * sec;
4009
4010 for (sec = abfd->sections; sec; sec = sec->next)
4011 {
4012 secflags = bfd_get_section_flags (abfd, sec);
4013 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
4014 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
4015 continue;
4016
4017 secname = bfd_get_section_name (abfd, sec);
4018 relname = (char *) bfd_malloc (strlen (secname) + 6);
4019 strcpy (relname, ".rela");
4020 strcat (relname, secname);
4021
3496cb2a
L		 4022 s = bfd_make_section_with_flags (abfd, relname,
4023 flags | SEC_READONLY);
03a12831 4024 if (s == NULL
03a12831
AO		 4025 || ! bfd_set_section_alignment (abfd, s, ptralign))
4026 return FALSE;
4027 }
4028 }
4029
4030 if (bed->want_dynbss)
4031 {
4032 /* The .dynbss section is a place to put symbols which are defined
4033 by dynamic objects, are referenced by regular objects, and are
4034 not functions. We must allocate space for them in the process
4035 image and use a R_*_COPY reloc to tell the dynamic linker to
4036 initialize them at run time. The linker script puts the .dynbss
4037 section into the .bss section of the final image. */
3496cb2a
L		 4038 s = bfd_make_section_with_flags (abfd, ".dynbss",
4039 SEC_ALLOC | SEC_LINKER_CREATED);
4040 if (s == NULL)
03a12831
AO		 4041 return FALSE;
4042
4043 /* The .rel[a].bss section holds copy relocs. This section is not
4044 normally needed. We need to create it here, though, so that the
4045 linker will map it to an output section. We can't just create it
4046 only if we need it, because we will not know whether we need it
4047 until we have seen all the input files, and the first time the
4048 main linker code calls BFD after examining all the input files
4049 (size_dynamic_sections) the input sections have already been
4050 mapped to the output sections. If the section turns out not to
4051 be needed, we can discard it later. We will never need this
4052 section when generating a shared object, since they do not use
4053 copy relocs. */
4054 if (! info->shared)
4055 {
3496cb2a
L		 4056 s = bfd_make_section_with_flags (abfd,
4057 (bed->default_use_rela_p
4058 ? ".rela.bss" : ".rel.bss"),
4059 flags | SEC_READONLY);
03a12831 4060 if (s == NULL
03a12831
AO		 4061 || ! bfd_set_section_alignment (abfd, s, ptralign))
4062 return FALSE;
4063 }
4064 }
4065
4066 return TRUE;
4067}
4068\f
4069/* Adjust a symbol defined by a dynamic object and referenced by a
4070 regular object. The current definition is in some section of the
4071 dynamic object, but we're not including those sections. We have to
4072 change the definition to something the rest of the link can
4073 understand. */
4074
4075static bfd_boolean
4076_bfd_mn10300_elf_adjust_dynamic_symbol (info, h)
4077 struct bfd_link_info * info;
4078 struct elf_link_hash_entry * h;
4079{
4080 bfd * dynobj;
4081 asection * s;
4082 unsigned int power_of_two;
4083
4084 dynobj = elf_hash_table (info)->dynobj;
4085
4086 /* Make sure we know what is going on here. */
4087 BFD_ASSERT (dynobj != NULL
f5385ebf 4088 && (h->needs_plt
f6e332e6 4089 || h->u.weakdef != NULL
f5385ebf
AM		 4090 || (h->def_dynamic
4091 && h->ref_regular
4092 && !h->def_regular)));
03a12831
AO		 4093
4094 /* If this is a function, put it in the procedure linkage table. We
4095 will fill in the contents of the procedure linkage table later,
4096 when we know the address of the .got section. */
4097 if (h->type == STT_FUNC
f5385ebf 4098 || h->needs_plt)
03a12831
AO		 4099 {
4100 if (! info->shared
f5385ebf
AM		 4101 && !h->def_dynamic
4102 && !h->ref_dynamic)
03a12831
AO		 4103 {
4104 /* This case can occur if we saw a PLT reloc in an input
4105 file, but the symbol was never referred to by a dynamic
4106 object. In such a case, we don't actually need to build
4107 a procedure linkage table, and we can just do a REL32
4108 reloc instead. */
f5385ebf 4109 BFD_ASSERT (h->needs_plt);
03a12831
AO		 4110 return TRUE;
4111 }
4112
4113 /* Make sure this symbol is output as a dynamic symbol. */
4114 if (h->dynindx == -1)
4115 {
c152c796 4116 if (! bfd_elf_link_record_dynamic_symbol (info, h))
03a12831
AO		 4117 return FALSE;
4118 }
4119
4120 s = bfd_get_section_by_name (dynobj, ".plt");
4121 BFD_ASSERT (s != NULL);
4122
4123 /* If this is the first .plt entry, make room for the special
4124 first entry. */
eea6121a
AM		 4125 if (s->size == 0)
4126 s->size += elf_mn10300_sizeof_plt0 (info);
03a12831
AO		 4127
4128 /* If this symbol is not defined in a regular file, and we are
4129 not generating a shared library, then set the symbol to this
4130 location in the .plt. This is required to make function
4131 pointers compare as equal between the normal executable and
4132 the shared library. */
4133 if (! info->shared
f5385ebf 4134 && !h->def_regular)
03a12831
AO		 4135 {
4136 h->root.u.def.section = s;
eea6121a 4137 h->root.u.def.value = s->size;
03a12831
AO		 4138 }
4139
eea6121a 4140 h->plt.offset = s->size;
03a12831
AO		 4141
4142 /* Make room for this entry. */
eea6121a 4143 s->size += elf_mn10300_sizeof_plt (info);
03a12831
AO		 4144
4145 /* We also need to make an entry in the .got.plt section, which
4146 will be placed in the .got section by the linker script. */
4147
4148 s = bfd_get_section_by_name (dynobj, ".got.plt");
4149 BFD_ASSERT (s != NULL);
eea6121a 4150 s->size += 4;
03a12831
AO		 4151
4152 /* We also need to make an entry in the .rela.plt section. */
4153
4154 s = bfd_get_section_by_name (dynobj, ".rela.plt");
4155 BFD_ASSERT (s != NULL);
eea6121a 4156 s->size += sizeof (Elf32_External_Rela);
03a12831
AO		 4157
4158 return TRUE;
4159 }
4160
4161 /* If this is a weak symbol, and there is a real definition, the
4162 processor independent code will have arranged for us to see the
4163 real definition first, and we can just use the same value. */
f6e332e6 4164 if (h->u.weakdef != NULL)
03a12831 4165 {
f6e332e6
AM		 4166 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4167 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4168 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4169 h->root.u.def.value = h->u.weakdef->root.u.def.value;
03a12831
AO		 4170 return TRUE;
4171 }
4172
4173 /* This is a reference to a symbol defined by a dynamic object which
4174 is not a function. */
4175
4176 /* If we are creating a shared library, we must presume that the
4177 only references to the symbol are via the global offset table.
4178 For such cases we need not do anything here; the relocations will
4179 be handled correctly by relocate_section. */
4180 if (info->shared)
4181 return TRUE;
4182
4183 /* If there are no references to this symbol that do not use the
4184 GOT, we don't need to generate a copy reloc. */
f5385ebf 4185 if (!h->non_got_ref)
03a12831
AO		 4186 return TRUE;
4187
909272ee
AM		 4188 if (h->size == 0)
4189 {
4190 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4191 h->root.root.string);
4192 return TRUE;
4193 }
4194
03a12831
AO		 4195 /* We must allocate the symbol in our .dynbss section, which will
4196 become part of the .bss section of the executable. There will be
4197 an entry for this symbol in the .dynsym section. The dynamic
4198 object will contain position independent code, so all references
4199 from the dynamic object to this symbol will go through the global
4200 offset table. The dynamic linker will use the .dynsym entry to
4201 determine the address it must put in the global offset table, so
4202 both the dynamic object and the regular object will refer to the
4203 same memory location for the variable. */
4204
4205 s = bfd_get_section_by_name (dynobj, ".dynbss");
4206 BFD_ASSERT (s != NULL);
4207
4208 /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
4209 copy the initial value out of the dynamic object and into the
4210 runtime process image. We need to remember the offset into the
4211 .rela.bss section we are going to use. */
4212 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4213 {
4214 asection * srel;
4215
4216 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
4217 BFD_ASSERT (srel != NULL);
eea6121a 4218 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 4219 h->needs_copy = 1;
03a12831
AO		 4220 }
4221
4222 /* We need to figure out the alignment required for this symbol. I
4223 have no idea how ELF linkers handle this. */
4224 power_of_two = bfd_log2 (h->size);
4225 if (power_of_two > 3)
4226 power_of_two = 3;
4227
4228 /* Apply the required alignment. */
eea6121a 4229 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
03a12831
AO		 4230 if (power_of_two > bfd_get_section_alignment (dynobj, s))
4231 {
4232 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
4233 return FALSE;
4234 }
4235
4236 /* Define the symbol as being at this point in the section. */
4237 h->root.u.def.section = s;
eea6121a 4238 h->root.u.def.value = s->size;
03a12831
AO		 4239
4240 /* Increment the section size to make room for the symbol. */
eea6121a 4241 s->size += h->size;
03a12831
AO		 4242
4243 return TRUE;
4244}
4245
03a12831
AO		 4246/* Set the sizes of the dynamic sections. */
4247
4248static bfd_boolean
4249_bfd_mn10300_elf_size_dynamic_sections (output_bfd, info)
4250 bfd * output_bfd;
4251 struct bfd_link_info * info;
4252{
4253 bfd * dynobj;
4254 asection * s;
4255 bfd_boolean plt;
4256 bfd_boolean relocs;
4257 bfd_boolean reltext;
4258
4259 dynobj = elf_hash_table (info)->dynobj;
4260 BFD_ASSERT (dynobj != NULL);
4261
4262 if (elf_hash_table (info)->dynamic_sections_created)
4263 {
4264 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 4265 if (info->executable)
03a12831
AO		 4266 {
4267 s = bfd_get_section_by_name (dynobj, ".interp");
4268 BFD_ASSERT (s != NULL);
eea6121a 4269 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
03a12831
AO		 4270 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4271 }
4272 }
4273 else
4274 {
4275 /* We may have created entries in the .rela.got section.
4276 However, if we are not creating the dynamic sections, we will
4277 not actually use these entries. Reset the size of .rela.got,
4278 which will cause it to get stripped from the output file
4279 below. */
4280 s = bfd_get_section_by_name (dynobj, ".rela.got");
4281 if (s != NULL)
eea6121a 4282 s->size = 0;
03a12831
AO		 4283 }
4284
03a12831
AO		 4285 /* The check_relocs and adjust_dynamic_symbol entry points have
4286 determined the sizes of the various dynamic sections. Allocate
4287 memory for them. */
4288 plt = FALSE;
4289 relocs = FALSE;
4290 reltext = FALSE;
4291 for (s = dynobj->sections; s != NULL; s = s->next)
4292 {
4293 const char * name;
03a12831
AO		 4294
4295 if ((s->flags & SEC_LINKER_CREATED) == 0)
4296 continue;
4297
4298 /* It's OK to base decisions on the section name, because none
4299 of the dynobj section names depend upon the input files. */
4300 name = bfd_get_section_name (dynobj, s);
4301
03a12831
AO		 4302 if (strcmp (name, ".plt") == 0)
4303 {
c456f082
AM		 4304 /* Remember whether there is a PLT. */
4305 plt = s->size != 0;
03a12831 4306 }
0112cd26 4307 else if (CONST_STRNEQ (name, ".rela"))
03a12831 4308 {
c456f082 4309 if (s->size != 0)
03a12831
AO		 4310 {
4311 asection * target;
4312
4313 /* Remember whether there are any reloc sections other
4314 than .rela.plt. */
4315 if (strcmp (name, ".rela.plt") != 0)
4316 {
4317 const char * outname;
4318
4319 relocs = TRUE;
4320
4321 /* If this relocation section applies to a read only
4322 section, then we probably need a DT_TEXTREL
4323 entry. The entries in the .rela.plt section
4324 really apply to the .got section, which we
4325 created ourselves and so know is not readonly. */
4326 outname = bfd_get_section_name (output_bfd,
4327 s->output_section);
4328 target = bfd_get_section_by_name (output_bfd, outname + 5);
4329 if (target != NULL
4330 && (target->flags & SEC_READONLY) != 0
4331 && (target->flags & SEC_ALLOC) != 0)
4332 reltext = TRUE;
4333 }
4334
4335 /* We use the reloc_count field as a counter if we need
4336 to copy relocs into the output file. */
4337 s->reloc_count = 0;
4338 }
4339 }
0112cd26 4340 else if (! CONST_STRNEQ (name, ".got")
c456f082 4341 && strcmp (name, ".dynbss") != 0)
03a12831
AO		 4342 /* It's not one of our sections, so don't allocate space. */
4343 continue;
4344
c456f082 4345 if (s->size == 0)
03a12831 4346 {
c456f082
AM		 4347 /* If we don't need this section, strip it from the
4348 output file. This is mostly to handle .rela.bss and
4349 .rela.plt. We must create both sections in
4350 create_dynamic_sections, because they must be created
4351 before the linker maps input sections to output
4352 sections. The linker does that before
4353 adjust_dynamic_symbol is called, and it is that
4354 function which decides whether anything needs to go
4355 into these sections. */
8423293d 4356 s->flags |= SEC_EXCLUDE;
03a12831
AO		 4357 continue;
4358 }
4359
c456f082
AM		 4360 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4361 continue;
4362
03a12831
AO		 4363 /* Allocate memory for the section contents. We use bfd_zalloc
4364 here in case unused entries are not reclaimed before the
4365 section's contents are written out. This should not happen,
4366 but this way if it does, we get a R_MN10300_NONE reloc
4367 instead of garbage. */
eea6121a 4368 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 4369 if (s->contents == NULL)
03a12831
AO		 4370 return FALSE;
4371 }
4372
4373 if (elf_hash_table (info)->dynamic_sections_created)
4374 {
4375 /* Add some entries to the .dynamic section. We fill in the
4376 values later, in _bfd_mn10300_elf_finish_dynamic_sections,
4377 but we must add the entries now so that we get the correct
4378 size for the .dynamic section. The DT_DEBUG entry is filled
4379 in by the dynamic linker and used by the debugger. */
4380 if (! info->shared)
4381 {
5a580b3a 4382 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
03a12831
AO		 4383 return FALSE;
4384 }
4385
4386 if (plt)
4387 {
5a580b3a
AM		 4388 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
4389 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4390 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
4391 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
03a12831
AO		 4392 return FALSE;
4393 }
4394
4395 if (relocs)
4396 {
5a580b3a
AM		 4397 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
4398 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
4399 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
4400 sizeof (Elf32_External_Rela)))
03a12831
AO		 4401 return FALSE;
4402 }
4403
4404 if (reltext)
4405 {
5a580b3a 4406 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
03a12831
AO		 4407 return FALSE;
4408 }
4409 }
4410
4411 return TRUE;
4412}
4413
4414/* Finish up dynamic symbol handling. We set the contents of various
4415 dynamic sections here. */
4416
4417static bfd_boolean
4418_bfd_mn10300_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
4419 bfd * output_bfd;
4420 struct bfd_link_info * info;
4421 struct elf_link_hash_entry * h;
4422 Elf_Internal_Sym * sym;
4423{
4424 bfd * dynobj;
4425
4426 dynobj = elf_hash_table (info)->dynobj;
4427
4428 if (h->plt.offset != (bfd_vma) -1)
4429 {
4430 asection * splt;
4431 asection * sgot;
4432 asection * srel;
4433 bfd_vma plt_index;
4434 bfd_vma got_offset;
4435 Elf_Internal_Rela rel;
4436
4437 /* This symbol has an entry in the procedure linkage table. Set
4438 it up. */
4439
4440 BFD_ASSERT (h->dynindx != -1);
4441
4442 splt = bfd_get_section_by_name (dynobj, ".plt");
4443 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4444 srel = bfd_get_section_by_name (dynobj, ".rela.plt");
4445 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
4446
4447 /* Get the index in the procedure linkage table which
4448 corresponds to this symbol. This is the index of this symbol
4449 in all the symbols for which we are making plt entries. The
4450 first entry in the procedure linkage table is reserved. */
4451 plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
4452 / elf_mn10300_sizeof_plt (info));
4453
4454 /* Get the offset into the .got table of the entry that
4455 corresponds to this function. Each .got entry is 4 bytes.
4456 The first three are reserved. */
4457 got_offset = (plt_index + 3) * 4;
4458
4459 /* Fill in the entry in the procedure linkage table. */
4460 if (! info->shared)
4461 {
4462 memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
4463 elf_mn10300_sizeof_plt (info));
4464 bfd_put_32 (output_bfd,
4465 (sgot->output_section->vma
4466 + sgot->output_offset
4467 + got_offset),
4468 (splt->contents + h->plt.offset
4469 + elf_mn10300_plt_symbol_offset (info)));
4470
4471 bfd_put_32 (output_bfd,
4472 (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
4473 (splt->contents + h->plt.offset
4474 + elf_mn10300_plt_plt0_offset (info)));
4475 }
4476 else
4477 {
4478 memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
4479 elf_mn10300_sizeof_plt (info));
4480
4481 bfd_put_32 (output_bfd, got_offset,
4482 (splt->contents + h->plt.offset
4483 + elf_mn10300_plt_symbol_offset (info)));
4484 }
4485
4486 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
4487 (splt->contents + h->plt.offset
4488 + elf_mn10300_plt_reloc_offset (info)));
4489
4490 /* Fill in the entry in the global offset table. */
4491 bfd_put_32 (output_bfd,
4492 (splt->output_section->vma
4493 + splt->output_offset
4494 + h->plt.offset
4495 + elf_mn10300_plt_temp_offset (info)),
4496 sgot->contents + got_offset);
4497
4498 /* Fill in the entry in the .rela.plt section. */
4499 rel.r_offset = (sgot->output_section->vma
4500 + sgot->output_offset
4501 + got_offset);
4502 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
4503 rel.r_addend = 0;
4504 bfd_elf32_swap_reloca_out (output_bfd, &rel,
560e09e9
NC		 4505 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4506 + plt_index));
03a12831 4507
f5385ebf 4508 if (!h->def_regular)
03a12831
AO		 4509 /* Mark the symbol as undefined, rather than as defined in
4510 the .plt section. Leave the value alone. */
4511 sym->st_shndx = SHN_UNDEF;
4512 }
4513
4514 if (h->got.offset != (bfd_vma) -1)
4515 {
4516 asection * sgot;
4517 asection * srel;
4518 Elf_Internal_Rela rel;
4519
4520 /* This symbol has an entry in the global offset table. Set it up. */
4521
4522 sgot = bfd_get_section_by_name (dynobj, ".got");
4523 srel = bfd_get_section_by_name (dynobj, ".rela.got");
4524 BFD_ASSERT (sgot != NULL && srel != NULL);
4525
4526 rel.r_offset = (sgot->output_section->vma
4527 + sgot->output_offset
4528 + (h->got.offset &~ 1));
4529
4530 /* If this is a -Bsymbolic link, and the symbol is defined
4531 locally, we just want to emit a RELATIVE reloc. Likewise if
4532 the symbol was forced to be local because of a version file.
4533 The entry in the global offset table will already have been
4534 initialized in the relocate_section function. */
4535 if (info->shared
4536 && (info->symbolic || h->dynindx == -1)
f5385ebf 4537 && h->def_regular)
03a12831
AO		 4538 {
4539 rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
4540 rel.r_addend = (h->root.u.def.value
4541 + h->root.u.def.section->output_section->vma
4542 + h->root.u.def.section->output_offset);
4543 }
4544 else
4545 {
4546 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
4547 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
4548 rel.r_addend = 0;
4549 }
4550
4551 bfd_elf32_swap_reloca_out (output_bfd, &rel,
560e09e9
NC		 4552 (bfd_byte *) ((Elf32_External_Rela *) srel->contents
4553 + srel->reloc_count));
03a12831
AO		 4554 ++ srel->reloc_count;
4555 }
4556
f5385ebf 4557 if (h->needs_copy)
03a12831
AO		 4558 {
4559 asection * s;
4560 Elf_Internal_Rela rel;
4561
4562 /* This symbol needs a copy reloc. Set it up. */
4563 BFD_ASSERT (h->dynindx != -1
4564 && (h->root.type == bfd_link_hash_defined
4565 || h->root.type == bfd_link_hash_defweak));
4566
4567 s = bfd_get_section_by_name (h->root.u.def.section->owner,
4568 ".rela.bss");
4569 BFD_ASSERT (s != NULL);
4570
4571 rel.r_offset = (h->root.u.def.value
4572 + h->root.u.def.section->output_section->vma
4573 + h->root.u.def.section->output_offset);
4574 rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
4575 rel.r_addend = 0;
4576 bfd_elf32_swap_reloca_out (output_bfd, &rel,
560e09e9
NC		 4577 (bfd_byte *) ((Elf32_External_Rela *) s->contents
4578 + s->reloc_count));
03a12831
AO		 4579 ++ s->reloc_count;
4580 }
4581
4582 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4583 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 4584 || h == elf_hash_table (info)->hgot)
03a12831
AO		 4585 sym->st_shndx = SHN_ABS;
4586
4587 return TRUE;
4588}
4589
4590/* Finish up the dynamic sections. */
4591
4592static bfd_boolean
4593_bfd_mn10300_elf_finish_dynamic_sections (output_bfd, info)
4594 bfd * output_bfd;
4595 struct bfd_link_info * info;
4596{
4597 bfd * dynobj;
4598 asection * sgot;
4599 asection * sdyn;
4600
4601 dynobj = elf_hash_table (info)->dynobj;
4602
4603 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4604 BFD_ASSERT (sgot != NULL);
4605 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4606
4607 if (elf_hash_table (info)->dynamic_sections_created)
4608 {
4609 asection * splt;
4610 Elf32_External_Dyn * dyncon;
4611 Elf32_External_Dyn * dynconend;
4612
4613 BFD_ASSERT (sdyn != NULL);
4614
4615 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4616 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
03a12831
AO		 4617
4618 for (; dyncon < dynconend; dyncon++)
4619 {
4620 Elf_Internal_Dyn dyn;
4621 const char * name;
4622 asection * s;
4623
4624 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4625
4626 switch (dyn.d_tag)
4627 {
4628 default:
4629 break;
4630
4631 case DT_PLTGOT:
4632 name = ".got";
4633 goto get_vma;
4634
4635 case DT_JMPREL:
4636 name = ".rela.plt";
4637 get_vma:
4638 s = bfd_get_section_by_name (output_bfd, name);
4639 BFD_ASSERT (s != NULL);
4640 dyn.d_un.d_ptr = s->vma;
4641 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4642 break;
4643
4644 case DT_PLTRELSZ:
4645 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4646 BFD_ASSERT (s != NULL);
eea6121a 4647 dyn.d_un.d_val = s->size;
03a12831
AO		 4648 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4649 break;
4650
4651 case DT_RELASZ:
4652 /* My reading of the SVR4 ABI indicates that the
4653 procedure linkage table relocs (DT_JMPREL) should be
4654 included in the overall relocs (DT_RELA). This is
4655 what Solaris does. However, UnixWare can not handle
4656 that case. Therefore, we override the DT_RELASZ entry
4657 here to make it not include the JMPREL relocs. Since
4658 the linker script arranges for .rela.plt to follow all
4659 other relocation sections, we don't have to worry
4660 about changing the DT_RELA entry. */
4661 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
4662 if (s != NULL)
eea6121a 4663 dyn.d_un.d_val -= s->size;
03a12831
AO		 4664 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4665 break;
4666 }
4667 }
4668
4669 /* Fill in the first entry in the procedure linkage table. */
4670 splt = bfd_get_section_by_name (dynobj, ".plt");
eea6121a 4671 if (splt && splt->size > 0)
03a12831
AO		 4672 {
4673 if (info->shared)
4674 {
4675 memcpy (splt->contents, elf_mn10300_pic_plt_entry,
4676 elf_mn10300_sizeof_plt (info));
4677 }
4678 else
4679 {
4680 memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
4681 bfd_put_32 (output_bfd,
4682 sgot->output_section->vma + sgot->output_offset + 4,
4683 splt->contents + elf_mn10300_plt0_gotid_offset (info));
4684 bfd_put_32 (output_bfd,
4685 sgot->output_section->vma + sgot->output_offset + 8,
4686 splt->contents + elf_mn10300_plt0_linker_offset (info));
4687 }
4688
4689 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4690 really seem like the right value. */
4691 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
4692 }
4693 }
4694
4695 /* Fill in the first three entries in the global offset table. */
eea6121a 4696 if (sgot->size > 0)
03a12831
AO		 4697 {
4698 if (sdyn == NULL)
4699 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
4700 else
4701 bfd_put_32 (output_bfd,
4702 sdyn->output_section->vma + sdyn->output_offset,
4703 sgot->contents);
4704 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
4705 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
4706 }
4707
4708 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
4709
4710 return TRUE;
4711}
4712
a873f25a
AO		 4713/* Classify relocation types, such that combreloc can sort them
4714 properly. */
4715
4716static enum elf_reloc_type_class
4717_bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4718{
4719 switch ((int) ELF32_R_TYPE (rela->r_info))
4720 {
4721 case R_MN10300_RELATIVE:
4722 return reloc_class_relative;
4723 case R_MN10300_JMP_SLOT:
4724 return reloc_class_plt;
4725 case R_MN10300_COPY:
4726 return reloc_class_copy;
4727 default:
4728 return reloc_class_normal;
4729 }
4730}
4731
73c3cd1c 4732#ifndef ELF_ARCH
252b5132
RH		 4733#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
4734#define TARGET_LITTLE_NAME "elf32-mn10300"
4735#define ELF_ARCH bfd_arch_mn10300
6f4514dc
AO		 4736#define ELF_MACHINE_CODE EM_MN10300
4737#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
252b5132 4738#define ELF_MAXPAGESIZE 0x1000
73c3cd1c 4739#endif
252b5132
RH		 4740
4741#define elf_info_to_howto mn10300_info_to_howto
4742#define elf_info_to_howto_rel 0
4743#define elf_backend_can_gc_sections 1
b491616a 4744#define elf_backend_rela_normal 1
252b5132
RH		 4745#define elf_backend_check_relocs mn10300_elf_check_relocs
4746#define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
4747#define elf_backend_relocate_section mn10300_elf_relocate_section
4748#define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
4749#define bfd_elf32_bfd_get_relocated_section_contents \
4750 mn10300_elf_get_relocated_section_contents
4751#define bfd_elf32_bfd_link_hash_table_create \
4752 elf32_mn10300_link_hash_table_create
e2d34d7d
DJ		 4753#define bfd_elf32_bfd_link_hash_table_free \
4754 elf32_mn10300_link_hash_table_free
252b5132 4755
73c3cd1c 4756#ifndef elf_symbol_leading_char
252b5132 4757#define elf_symbol_leading_char '_'
73c3cd1c 4758#endif
252b5132
RH		 4759
4760/* So we can set bits in e_flags. */
4761#define elf_backend_final_write_processing \
3b36f7e6
AM		 4762 _bfd_mn10300_elf_final_write_processing
4763#define elf_backend_object_p _bfd_mn10300_elf_object_p
252b5132
RH		 4764
4765#define bfd_elf32_bfd_merge_private_bfd_data \
3b36f7e6 4766 _bfd_mn10300_elf_merge_private_bfd_data
252b5132 4767
03a12831
AO		 4768#define elf_backend_can_gc_sections 1
4769#define elf_backend_create_dynamic_sections \
4770 _bfd_mn10300_elf_create_dynamic_sections
4771#define elf_backend_adjust_dynamic_symbol \
4772 _bfd_mn10300_elf_adjust_dynamic_symbol
4773#define elf_backend_size_dynamic_sections \
4774 _bfd_mn10300_elf_size_dynamic_sections
74541ad4
AM		 4775#define elf_backend_omit_section_dynsym \
4776 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
03a12831
AO		 4777#define elf_backend_finish_dynamic_symbol \
4778 _bfd_mn10300_elf_finish_dynamic_symbol
4779#define elf_backend_finish_dynamic_sections \
4780 _bfd_mn10300_elf_finish_dynamic_sections
4781
a873f25a
AO		 4782#define elf_backend_reloc_type_class \
4783 _bfd_mn10300_elf_reloc_type_class
4784
03a12831
AO		 4785#define elf_backend_want_got_plt 1
4786#define elf_backend_plt_readonly 1
4787#define elf_backend_want_plt_sym 0
4788#define elf_backend_got_header_size 12
03a12831 4789
252b5132 4790#include "elf32-target.h"
GDB Binutils - Deliverables
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