Add hdynamic to elf_link_hash_table for _DYNAMIC
[deliverable/binutils-gdb.git] / bfd / elf32-m32r.c
1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "elf/m32r.h"
27
28 #define NOP_INSN 0x7000
29 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
30
31 /* Use REL instead of RELA to save space.
32 This only saves space in libraries and object files, but perhaps
33 relocs will be put in ROM? All in all though, REL relocs are a pain
34 to work with. */
35 /* #define USE_REL 1
36
37 #ifndef USE_REL
38 #define USE_REL 0
39 #endif */
40 /* Use RELA. But use REL to link old objects for backwords compatibility. */
41
42 /* Functions for the M32R ELF linker. */
43
44 /* The name of the dynamic interpreter. This is put in the .interp
45 section. */
46
47 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
48
49 /* The nop opcode we use. */
50
51 #define M32R_NOP 0x7000f000
52
53 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
54
55 /* The size in bytes of an entry in the procedure linkage table. */
56
57 #define PLT_ENTRY_SIZE 20
58 #define PLT_HEADER_SIZE 20
59
60 /* The first one entries in a procedure linkage table are reserved,
61 and the initial contents are unimportant (we zero them out).
62 Subsequent entries look like this. */
63
64 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
65 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
66 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
67 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
68 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
69
70 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
71 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
72 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
73 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
74 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
75
76 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
77 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
78 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
79 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
80 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
81 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
82 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
83
84
85 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
86
87 static bfd_reloc_status_type
88 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
89 reloc_howto_type *howto,
90 asection *input_section,
91 bfd_byte *data,
92 bfd_vma offset,
93 asection *symbol_section ATTRIBUTE_UNUSED,
94 bfd_vma symbol_value,
95 bfd_vma addend)
96 {
97 bfd_signed_vma relocation;
98 unsigned long x;
99 bfd_reloc_status_type status;
100
101 /* Sanity check the address (offset in section). */
102 if (offset > bfd_get_section_limit (abfd, input_section))
103 return bfd_reloc_outofrange;
104
105 relocation = symbol_value + addend;
106 /* Make it pc relative. */
107 relocation -= (input_section->output_section->vma
108 + input_section->output_offset);
109 /* These jumps mask off the lower two bits of the current address
110 before doing pcrel calculations. */
111 relocation -= (offset & -(bfd_vma) 4);
112
113 if (relocation < -0x200 || relocation > 0x1ff)
114 status = bfd_reloc_overflow;
115 else
116 status = bfd_reloc_ok;
117
118 x = bfd_get_16 (abfd, data + offset);
119 relocation >>= howto->rightshift;
120 relocation <<= howto->bitpos;
121 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
122 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
123
124 return status;
125 }
126
127 /* Handle the R_M32R_10_PCREL reloc. */
128
129 static bfd_reloc_status_type
130 m32r_elf_10_pcrel_reloc (bfd * abfd,
131 arelent * reloc_entry,
132 asymbol * symbol,
133 void * data,
134 asection * input_section,
135 bfd * output_bfd,
136 char ** error_message ATTRIBUTE_UNUSED)
137 {
138 /* This part is from bfd_elf_generic_reloc. */
139 if (output_bfd != NULL
140 && (symbol->flags & BSF_SECTION_SYM) == 0
141 && (! reloc_entry->howto->partial_inplace
142 || reloc_entry->addend == 0))
143 {
144 reloc_entry->address += input_section->output_offset;
145 return bfd_reloc_ok;
146 }
147
148 if (output_bfd != NULL)
149 /* FIXME: See bfd_perform_relocation. Is this right? */
150 return bfd_reloc_continue;
151
152 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
153 input_section,
154 data, reloc_entry->address,
155 symbol->section,
156 (symbol->value
157 + symbol->section->output_section->vma
158 + symbol->section->output_offset),
159 reloc_entry->addend);
160 }
161
162 /* Do generic partial_inplace relocation.
163 This is a local replacement for bfd_elf_generic_reloc. */
164
165 static bfd_reloc_status_type
166 m32r_elf_generic_reloc (bfd *input_bfd,
167 arelent *reloc_entry,
168 asymbol *symbol,
169 void * data,
170 asection *input_section,
171 bfd *output_bfd,
172 char **error_message ATTRIBUTE_UNUSED)
173 {
174 bfd_reloc_status_type ret;
175 bfd_vma relocation;
176 bfd_byte *inplace_address;
177
178 /* This part is from bfd_elf_generic_reloc.
179 If we're relocating, and this an external symbol, we don't want
180 to change anything. */
181 if (output_bfd != NULL
182 && (symbol->flags & BSF_SECTION_SYM) == 0
183 && reloc_entry->addend == 0)
184 {
185 reloc_entry->address += input_section->output_offset;
186 return bfd_reloc_ok;
187 }
188
189 /* Now do the reloc in the usual way.
190 ??? It would be nice to call bfd_elf_generic_reloc here,
191 but we have partial_inplace set. bfd_elf_generic_reloc will
192 pass the handling back to bfd_install_relocation which will install
193 a section relative addend which is wrong. */
194
195 /* Sanity check the address (offset in section). */
196 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
197 return bfd_reloc_outofrange;
198
199 ret = bfd_reloc_ok;
200 if (bfd_is_und_section (symbol->section)
201 && output_bfd == NULL)
202 ret = bfd_reloc_undefined;
203
204 if (bfd_is_com_section (symbol->section)
205 || output_bfd != NULL)
206 relocation = 0;
207 else
208 relocation = symbol->value;
209
210 /* Only do this for a final link. */
211 if (output_bfd == NULL)
212 {
213 relocation += symbol->section->output_section->vma;
214 relocation += symbol->section->output_offset;
215 }
216
217 relocation += reloc_entry->addend;
218 inplace_address = (bfd_byte *) data + reloc_entry->address;
219
220 #define DOIT(x) \
221 x = ( (x & ~reloc_entry->howto->dst_mask) | \
222 (((x & reloc_entry->howto->src_mask) + relocation) & \
223 reloc_entry->howto->dst_mask))
224
225 switch (reloc_entry->howto->size)
226 {
227 case 1:
228 {
229 short x = bfd_get_16 (input_bfd, inplace_address);
230 DOIT (x);
231 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
232 }
233 break;
234 case 2:
235 {
236 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
237 DOIT (x);
238 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
239 }
240 break;
241 default:
242 BFD_ASSERT (0);
243 }
244
245 if (output_bfd != NULL)
246 reloc_entry->address += input_section->output_offset;
247
248 return ret;
249 }
250
251 /* Handle the R_M32R_SDA16 reloc.
252 This reloc is used to compute the address of objects in the small data area
253 and to perform loads and stores from that area.
254 The lower 16 bits are sign extended and added to the register specified
255 in the instruction, which is assumed to point to _SDA_BASE_. */
256
257 static bfd_reloc_status_type
258 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
259 arelent *reloc_entry,
260 asymbol *symbol,
261 void * data ATTRIBUTE_UNUSED,
262 asection *input_section,
263 bfd *output_bfd,
264 char **error_message ATTRIBUTE_UNUSED)
265 {
266 /* This part is from bfd_elf_generic_reloc. */
267 if (output_bfd != NULL
268 && (symbol->flags & BSF_SECTION_SYM) == 0
269 && (! reloc_entry->howto->partial_inplace
270 || reloc_entry->addend == 0))
271 {
272 reloc_entry->address += input_section->output_offset;
273 return bfd_reloc_ok;
274 }
275
276 if (output_bfd != NULL)
277 /* FIXME: See bfd_perform_relocation. Is this right? */
278 return bfd_reloc_continue;
279
280 /* FIXME: not sure what to do here yet. But then again, the linker
281 may never call us. */
282 abort ();
283 }
284
285 \f
286 /* Handle the R_M32R_HI16_[SU]LO relocs.
287 HI16_SLO is for the add3 and load/store with displacement instructions.
288 HI16_ULO is for the or3 instruction.
289 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
290 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
291 we must add one to the high 16 bytes (which will get subtracted off when
292 the low 16 bits are added).
293 These relocs have to be done in combination with an R_M32R_LO16 reloc
294 because there is a carry from the LO16 to the HI16. Here we just save
295 the information we need; we do the actual relocation when we see the LO16.
296 This code is copied from the elf32-mips.c. We also support an arbitrary
297 number of HI16 relocs to be associated with a single LO16 reloc. The
298 assembler sorts the relocs to ensure each HI16 immediately precedes its
299 LO16. However if there are multiple copies, the assembler may not find
300 the real LO16 so it picks the first one it finds. */
301
302 struct m32r_hi16
303 {
304 struct m32r_hi16 *next;
305 bfd_byte *addr;
306 bfd_vma addend;
307 };
308
309 /* FIXME: This should not be a static variable. */
310
311 static struct m32r_hi16 *m32r_hi16_list;
312
313 static bfd_reloc_status_type
314 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
315 arelent *reloc_entry,
316 asymbol *symbol,
317 void * data,
318 asection *input_section,
319 bfd *output_bfd,
320 char **error_message ATTRIBUTE_UNUSED)
321 {
322 bfd_reloc_status_type ret;
323 bfd_vma relocation;
324 struct m32r_hi16 *n;
325
326 /* This part is from bfd_elf_generic_reloc.
327 If we're relocating, and this an external symbol, we don't want
328 to change anything. */
329 if (output_bfd != NULL
330 && (symbol->flags & BSF_SECTION_SYM) == 0
331 && reloc_entry->addend == 0)
332 {
333 reloc_entry->address += input_section->output_offset;
334 return bfd_reloc_ok;
335 }
336
337 /* Sanity check the address (offset in section). */
338 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
339 return bfd_reloc_outofrange;
340
341 ret = bfd_reloc_ok;
342 if (bfd_is_und_section (symbol->section)
343 && output_bfd == NULL)
344 ret = bfd_reloc_undefined;
345
346 if (bfd_is_com_section (symbol->section))
347 relocation = 0;
348 else
349 relocation = symbol->value;
350
351 relocation += symbol->section->output_section->vma;
352 relocation += symbol->section->output_offset;
353 relocation += reloc_entry->addend;
354
355 /* Save the information, and let LO16 do the actual relocation. */
356 n = bfd_malloc ((bfd_size_type) sizeof *n);
357 if (n == NULL)
358 return bfd_reloc_outofrange;
359 n->addr = (bfd_byte *) data + reloc_entry->address;
360 n->addend = relocation;
361 n->next = m32r_hi16_list;
362 m32r_hi16_list = n;
363
364 if (output_bfd != NULL)
365 reloc_entry->address += input_section->output_offset;
366
367 return ret;
368 }
369
370 /* Handle an M32R ELF HI16 reloc. */
371
372 static void
373 m32r_elf_relocate_hi16 (bfd *input_bfd,
374 int type,
375 Elf_Internal_Rela *relhi,
376 Elf_Internal_Rela *rello,
377 bfd_byte *contents,
378 bfd_vma addend)
379 {
380 unsigned long insn;
381 bfd_vma addlo;
382
383 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
384
385 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
386 if (type == R_M32R_HI16_SLO)
387 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
388 else
389 addlo &= 0xffff;
390
391 addend += ((insn & 0xffff) << 16) + addlo;
392
393 /* Reaccount for sign extension of low part. */
394 if (type == R_M32R_HI16_SLO
395 && (addend & 0x8000) != 0)
396 addend += 0x10000;
397
398 bfd_put_32 (input_bfd,
399 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
400 contents + relhi->r_offset);
401 }
402
403 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
404 inplace relocation; this function exists in order to do the
405 R_M32R_HI16_[SU]LO relocation described above. */
406
407 static bfd_reloc_status_type
408 m32r_elf_lo16_reloc (bfd *input_bfd,
409 arelent *reloc_entry,
410 asymbol *symbol,
411 void * data,
412 asection *input_section,
413 bfd *output_bfd,
414 char **error_message)
415 {
416 /* This part is from bfd_elf_generic_reloc.
417 If we're relocating, and this an external symbol, we don't want
418 to change anything. */
419 if (output_bfd != NULL
420 && (symbol->flags & BSF_SECTION_SYM) == 0
421 && reloc_entry->addend == 0)
422 {
423 reloc_entry->address += input_section->output_offset;
424 return bfd_reloc_ok;
425 }
426
427 if (m32r_hi16_list != NULL)
428 {
429 struct m32r_hi16 *l;
430
431 l = m32r_hi16_list;
432 while (l != NULL)
433 {
434 unsigned long insn;
435 unsigned long val;
436 unsigned long vallo;
437 struct m32r_hi16 *next;
438
439 /* Do the HI16 relocation. Note that we actually don't need
440 to know anything about the LO16 itself, except where to
441 find the low 16 bits of the addend needed by the LO16. */
442 insn = bfd_get_32 (input_bfd, l->addr);
443 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
444 & 0xffff) ^ 0x8000) - 0x8000;
445 val = ((insn & 0xffff) << 16) + vallo;
446 val += l->addend;
447
448 /* Reaccount for sign extension of low part. */
449 if ((val & 0x8000) != 0)
450 val += 0x10000;
451
452 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
453 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
454
455 next = l->next;
456 free (l);
457 l = next;
458 }
459
460 m32r_hi16_list = NULL;
461 }
462
463 /* Now do the LO16 reloc in the usual way.
464 ??? It would be nice to call bfd_elf_generic_reloc here,
465 but we have partial_inplace set. bfd_elf_generic_reloc will
466 pass the handling back to bfd_install_relocation which will install
467 a section relative addend which is wrong. */
468 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
469 input_section, output_bfd, error_message);
470 }
471
472 \f
473 static reloc_howto_type m32r_elf_howto_table[] =
474 {
475 /* This reloc does nothing. */
476 HOWTO (R_M32R_NONE, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 32, /* bitsize */
480 FALSE, /* pc_relative */
481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_M32R_NONE", /* name */
485 FALSE, /* partial_inplace */
486 0, /* src_mask */
487 0, /* dst_mask */
488 FALSE), /* pcrel_offset */
489
490 /* A 16 bit absolute relocation. */
491 HOWTO (R_M32R_16, /* type */
492 0, /* rightshift */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
494 16, /* bitsize */
495 FALSE, /* pc_relative */
496 0, /* bitpos */
497 complain_overflow_bitfield, /* complain_on_overflow */
498 m32r_elf_generic_reloc,/* special_function */
499 "R_M32R_16", /* name */
500 TRUE, /* partial_inplace */
501 0xffff, /* src_mask */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
504
505 /* A 32 bit absolute relocation. */
506 HOWTO (R_M32R_32, /* type */
507 0, /* rightshift */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
509 32, /* bitsize */
510 FALSE, /* pc_relative */
511 0, /* bitpos */
512 complain_overflow_bitfield, /* complain_on_overflow */
513 m32r_elf_generic_reloc,/* special_function */
514 "R_M32R_32", /* name */
515 TRUE, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
519
520 /* A 24 bit address. */
521 HOWTO (R_M32R_24, /* type */
522 0, /* rightshift */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
524 24, /* bitsize */
525 FALSE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_unsigned, /* complain_on_overflow */
528 m32r_elf_generic_reloc,/* special_function */
529 "R_M32R_24", /* name */
530 TRUE, /* partial_inplace */
531 0xffffff, /* src_mask */
532 0xffffff, /* dst_mask */
533 FALSE), /* pcrel_offset */
534
535 /* An PC Relative 10-bit relocation, shifted by 2.
536 This reloc is complicated because relocations are relative to pc & -4.
537 i.e. branches in the right insn slot use the address of the left insn
538 slot for pc. */
539 /* ??? It's not clear whether this should have partial_inplace set or not.
540 Branch relaxing in the assembler can store the addend in the insn,
541 and if bfd_install_relocation gets called the addend may get added
542 again. */
543 HOWTO (R_M32R_10_PCREL, /* type */
544 2, /* rightshift */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
546 10, /* bitsize */
547 TRUE, /* pc_relative */
548 0, /* bitpos */
549 complain_overflow_signed, /* complain_on_overflow */
550 m32r_elf_10_pcrel_reloc, /* special_function */
551 "R_M32R_10_PCREL", /* name */
552 FALSE, /* partial_inplace */
553 0xff, /* src_mask */
554 0xff, /* dst_mask */
555 TRUE), /* pcrel_offset */
556
557 /* A relative 18 bit relocation, right shifted by 2. */
558 HOWTO (R_M32R_18_PCREL, /* type */
559 2, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 16, /* bitsize */
562 TRUE, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_M32R_18_PCREL", /* name */
567 FALSE, /* partial_inplace */
568 0xffff, /* src_mask */
569 0xffff, /* dst_mask */
570 TRUE), /* pcrel_offset */
571
572 /* A relative 26 bit relocation, right shifted by 2. */
573 /* ??? It's not clear whether this should have partial_inplace set or not.
574 Branch relaxing in the assembler can store the addend in the insn,
575 and if bfd_install_relocation gets called the addend may get added
576 again. */
577 HOWTO (R_M32R_26_PCREL, /* type */
578 2, /* rightshift */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
580 26, /* bitsize */
581 TRUE, /* pc_relative */
582 0, /* bitpos */
583 complain_overflow_signed, /* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_M32R_26_PCREL", /* name */
586 FALSE, /* partial_inplace */
587 0xffffff, /* src_mask */
588 0xffffff, /* dst_mask */
589 TRUE), /* pcrel_offset */
590
591 /* High 16 bits of address when lower 16 is or'd in. */
592 HOWTO (R_M32R_HI16_ULO, /* type */
593 16, /* rightshift */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
595 16, /* bitsize */
596 FALSE, /* pc_relative */
597 0, /* bitpos */
598 complain_overflow_dont, /* complain_on_overflow */
599 m32r_elf_hi16_reloc, /* special_function */
600 "R_M32R_HI16_ULO", /* name */
601 TRUE, /* partial_inplace */
602 0x0000ffff, /* src_mask */
603 0x0000ffff, /* dst_mask */
604 FALSE), /* pcrel_offset */
605
606 /* High 16 bits of address when lower 16 is added in. */
607 HOWTO (R_M32R_HI16_SLO, /* type */
608 16, /* rightshift */
609 2, /* size (0 = byte, 1 = short, 2 = long) */
610 16, /* bitsize */
611 FALSE, /* pc_relative */
612 0, /* bitpos */
613 complain_overflow_dont, /* complain_on_overflow */
614 m32r_elf_hi16_reloc, /* special_function */
615 "R_M32R_HI16_SLO", /* name */
616 TRUE, /* partial_inplace */
617 0x0000ffff, /* src_mask */
618 0x0000ffff, /* dst_mask */
619 FALSE), /* pcrel_offset */
620
621 /* Lower 16 bits of address. */
622 HOWTO (R_M32R_LO16, /* type */
623 0, /* rightshift */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
625 16, /* bitsize */
626 FALSE, /* pc_relative */
627 0, /* bitpos */
628 complain_overflow_dont, /* complain_on_overflow */
629 m32r_elf_lo16_reloc, /* special_function */
630 "R_M32R_LO16", /* name */
631 TRUE, /* partial_inplace */
632 0x0000ffff, /* src_mask */
633 0x0000ffff, /* dst_mask */
634 FALSE), /* pcrel_offset */
635
636 /* Small data area 16 bits offset. */
637 HOWTO (R_M32R_SDA16, /* type */
638 0, /* rightshift */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
640 16, /* bitsize */
641 FALSE, /* pc_relative */
642 0, /* bitpos */
643 complain_overflow_signed, /* complain_on_overflow */
644 m32r_elf_sda16_reloc, /* special_function */
645 "R_M32R_SDA16", /* name */
646 TRUE, /* partial_inplace */ /* FIXME: correct? */
647 0x0000ffff, /* src_mask */
648 0x0000ffff, /* dst_mask */
649 FALSE), /* pcrel_offset */
650
651 /* GNU extension to record C++ vtable hierarchy. */
652 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
653 0, /* rightshift */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
655 0, /* bitsize */
656 FALSE, /* pc_relative */
657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
659 NULL, /* special_function */
660 "R_M32R_GNU_VTINHERIT", /* name */
661 FALSE, /* partial_inplace */
662 0, /* src_mask */
663 0, /* dst_mask */
664 FALSE), /* pcrel_offset */
665
666 /* GNU extension to record C++ vtable member usage. */
667 HOWTO (R_M32R_GNU_VTENTRY, /* type */
668 0, /* rightshift */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
670 0, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
675 "R_M32R_GNU_VTENTRY", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 EMPTY_HOWTO (13),
682 EMPTY_HOWTO (14),
683 EMPTY_HOWTO (15),
684 EMPTY_HOWTO (16),
685 EMPTY_HOWTO (17),
686 EMPTY_HOWTO (18),
687 EMPTY_HOWTO (19),
688 EMPTY_HOWTO (20),
689 EMPTY_HOWTO (21),
690 EMPTY_HOWTO (22),
691 EMPTY_HOWTO (23),
692 EMPTY_HOWTO (24),
693 EMPTY_HOWTO (25),
694 EMPTY_HOWTO (26),
695 EMPTY_HOWTO (27),
696 EMPTY_HOWTO (28),
697 EMPTY_HOWTO (29),
698 EMPTY_HOWTO (30),
699 EMPTY_HOWTO (31),
700 EMPTY_HOWTO (32),
701
702 /* A 16 bit absolute relocation. */
703 HOWTO (R_M32R_16_RELA, /* type */
704 0, /* rightshift */
705 1, /* size (0 = byte, 1 = short, 2 = long) */
706 16, /* bitsize */
707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_bitfield, /* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
711 "R_M32R_16_RELA", /* name */
712 FALSE, /* partial_inplace */
713 0xffff, /* src_mask */
714 0xffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
716
717 /* A 32 bit absolute relocation. */
718 HOWTO (R_M32R_32_RELA, /* type */
719 0, /* rightshift */
720 2, /* size (0 = byte, 1 = short, 2 = long) */
721 32, /* bitsize */
722 FALSE, /* pc_relative */
723 0, /* bitpos */
724 complain_overflow_bitfield, /* complain_on_overflow */
725 bfd_elf_generic_reloc,/* special_function */
726 "R_M32R_32_RELA", /* name */
727 FALSE, /* partial_inplace */
728 0xffffffff, /* src_mask */
729 0xffffffff, /* dst_mask */
730 FALSE), /* pcrel_offset */
731
732 /* A 24 bit address. */
733 HOWTO (R_M32R_24_RELA, /* type */
734 0, /* rightshift */
735 2, /* size (0 = byte, 1 = short, 2 = long) */
736 24, /* bitsize */
737 FALSE, /* pc_relative */
738 0, /* bitpos */
739 complain_overflow_unsigned, /* complain_on_overflow */
740 bfd_elf_generic_reloc,/* special_function */
741 "R_M32R_24_RELA", /* name */
742 FALSE, /* partial_inplace */
743 0xffffff, /* src_mask */
744 0xffffff, /* dst_mask */
745 FALSE), /* pcrel_offset */
746
747 HOWTO (R_M32R_10_PCREL_RELA, /* type */
748 2, /* rightshift */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
750 10, /* bitsize */
751 TRUE, /* pc_relative */
752 0, /* bitpos */
753 complain_overflow_signed, /* complain_on_overflow */
754 m32r_elf_10_pcrel_reloc, /* special_function */
755 "R_M32R_10_PCREL_RELA",/* name */
756 FALSE, /* partial_inplace */
757 0xff, /* src_mask */
758 0xff, /* dst_mask */
759 TRUE), /* pcrel_offset */
760
761 /* A relative 18 bit relocation, right shifted by 2. */
762 HOWTO (R_M32R_18_PCREL_RELA, /* type */
763 2, /* rightshift */
764 2, /* size (0 = byte, 1 = short, 2 = long) */
765 16, /* bitsize */
766 TRUE, /* pc_relative */
767 0, /* bitpos */
768 complain_overflow_signed, /* complain_on_overflow */
769 bfd_elf_generic_reloc, /* special_function */
770 "R_M32R_18_PCREL_RELA",/* name */
771 FALSE, /* partial_inplace */
772 0xffff, /* src_mask */
773 0xffff, /* dst_mask */
774 TRUE), /* pcrel_offset */
775
776 /* A relative 26 bit relocation, right shifted by 2. */
777 HOWTO (R_M32R_26_PCREL_RELA, /* type */
778 2, /* rightshift */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
780 26, /* bitsize */
781 TRUE, /* pc_relative */
782 0, /* bitpos */
783 complain_overflow_signed, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
785 "R_M32R_26_PCREL_RELA",/* name */
786 FALSE, /* partial_inplace */
787 0xffffff, /* src_mask */
788 0xffffff, /* dst_mask */
789 TRUE), /* pcrel_offset */
790
791 /* High 16 bits of address when lower 16 is or'd in. */
792 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
793 16, /* rightshift */
794 2, /* size (0 = byte, 1 = short, 2 = long) */
795 16, /* bitsize */
796 FALSE, /* pc_relative */
797 0, /* bitpos */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_M32R_HI16_ULO_RELA",/* name */
801 FALSE, /* partial_inplace */
802 0x0000ffff, /* src_mask */
803 0x0000ffff, /* dst_mask */
804 FALSE), /* pcrel_offset */
805
806 /* High 16 bits of address when lower 16 is added in. */
807 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
808 16, /* rightshift */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
810 16, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_M32R_HI16_SLO_RELA",/* name */
816 FALSE, /* partial_inplace */
817 0x0000ffff, /* src_mask */
818 0x0000ffff, /* dst_mask */
819 FALSE), /* pcrel_offset */
820
821 /* Lower 16 bits of address. */
822 HOWTO (R_M32R_LO16_RELA, /* type */
823 0, /* rightshift */
824 2, /* size (0 = byte, 1 = short, 2 = long) */
825 16, /* bitsize */
826 FALSE, /* pc_relative */
827 0, /* bitpos */
828 complain_overflow_dont, /* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_M32R_LO16_RELA", /* name */
831 FALSE, /* partial_inplace */
832 0x0000ffff, /* src_mask */
833 0x0000ffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
835
836 /* Small data area 16 bits offset. */
837 HOWTO (R_M32R_SDA16_RELA, /* type */
838 0, /* rightshift */
839 2, /* size (0 = byte, 1 = short, 2 = long) */
840 16, /* bitsize */
841 FALSE, /* pc_relative */
842 0, /* bitpos */
843 complain_overflow_signed, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_M32R_SDA16_RELA", /* name */
846 TRUE, /* partial_inplace */ /* FIXME: correct? */
847 0x0000ffff, /* src_mask */
848 0x0000ffff, /* dst_mask */
849 FALSE), /* pcrel_offset */
850
851 /* GNU extension to record C++ vtable hierarchy. */
852 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
853 0, /* rightshift */
854 2, /* size (0 = byte, 1 = short, 2 = long) */
855 0, /* bitsize */
856 FALSE, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 NULL, /* special_function */
860 "R_M32R_RELA_GNU_VTINHERIT", /* name */
861 FALSE, /* partial_inplace */
862 0, /* src_mask */
863 0, /* dst_mask */
864 FALSE), /* pcrel_offset */
865
866 /* GNU extension to record C++ vtable member usage. */
867 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
868 0, /* rightshift */
869 2, /* size (0 = byte, 1 = short, 2 = long) */
870 0, /* bitsize */
871 FALSE, /* pc_relative */
872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
874 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
875 "R_M32R_RELA_GNU_VTENTRY", /* name */
876 FALSE, /* partial_inplace */
877 0, /* src_mask */
878 0, /* dst_mask */
879 FALSE), /* pcrel_offset */
880
881 /* A 32 bit PC relative relocation. */
882 HOWTO (R_M32R_REL32, /* type */
883 0, /* rightshift */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
885 32, /* bitsize */
886 TRUE, /* pc_relative */
887 0, /* bitpos */
888 complain_overflow_bitfield, /* complain_on_overflow */
889 bfd_elf_generic_reloc,/* special_function */
890 "R_M32R_REL32", /* name */
891 FALSE, /* partial_inplace */
892 0xffffffff, /* src_mask */
893 0xffffffff, /* dst_mask */
894 TRUE), /* pcrel_offset */
895
896 EMPTY_HOWTO (46),
897 EMPTY_HOWTO (47),
898
899 /* Like R_M32R_24, but referring to the GOT table entry for
900 the symbol. */
901 HOWTO (R_M32R_GOT24, /* type */
902 0, /* rightshift */
903 2, /* size (0 = byte, 1 = short, 2 = long) */
904 24, /* bitsize */
905 FALSE, /* pc_relative */
906 0, /* bitpos */
907 complain_overflow_unsigned, /* complain_on_overflow */
908 bfd_elf_generic_reloc, /* special_function */
909 "R_M32R_GOT24", /* name */
910 FALSE, /* partial_inplace */
911 0xffffff, /* src_mask */
912 0xffffff, /* dst_mask */
913 FALSE), /* pcrel_offset */
914
915 /* Like R_M32R_PCREL, but referring to the procedure linkage table
916 entry for the symbol. */
917 HOWTO (R_M32R_26_PLTREL, /* type */
918 2, /* rightshift */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
920 24, /* bitsize */
921 TRUE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_signed, /* complain_on_overflow */
924 bfd_elf_generic_reloc, /* special_function */
925 "R_M32R_26_PLTREL", /* name */
926 FALSE, /* partial_inplace */
927 0xffffff, /* src_mask */
928 0xffffff, /* dst_mask */
929 TRUE), /* pcrel_offset */
930
931 /* This is used only by the dynamic linker. The symbol should exist
932 both in the object being run and in some shared library. The
933 dynamic linker copies the data addressed by the symbol from the
934 shared library into the object, because the object being
935 run has to have the data at some particular address. */
936 HOWTO (R_M32R_COPY, /* type */
937 0, /* rightshift */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
939 32, /* bitsize */
940 FALSE, /* pc_relative */
941 0, /* bitpos */
942 complain_overflow_bitfield, /* complain_on_overflow */
943 bfd_elf_generic_reloc, /* special_function */
944 "R_M32R_COPY", /* name */
945 FALSE, /* partial_inplace */
946 0xffffffff, /* src_mask */
947 0xffffffff, /* dst_mask */
948 FALSE), /* pcrel_offset */
949
950 /* Like R_M32R_24, but used when setting global offset table
951 entries. */
952 HOWTO (R_M32R_GLOB_DAT, /* type */
953 0, /* rightshift */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
955 32, /* bitsize */
956 FALSE, /* pc_relative */
957 0, /* bitpos */
958 complain_overflow_bitfield, /* complain_on_overflow */
959 bfd_elf_generic_reloc, /* special_function */
960 "R_M32R_GLOB_DAT", /* name */
961 FALSE, /* partial_inplace */
962 0xffffffff, /* src_mask */
963 0xffffffff, /* dst_mask */
964 FALSE), /* pcrel_offset */
965
966 /* Marks a procedure linkage table entry for a symbol. */
967 HOWTO (R_M32R_JMP_SLOT, /* type */
968 0, /* rightshift */
969 2, /* size (0 = byte, 1 = short, 2 = long) */
970 32, /* bitsize */
971 FALSE, /* pc_relative */
972 0, /* bitpos */
973 complain_overflow_bitfield, /* complain_on_overflow */
974 bfd_elf_generic_reloc, /* special_function */
975 "R_M32R_JMP_SLOT", /* name */
976 FALSE, /* partial_inplace */
977 0xffffffff, /* src_mask */
978 0xffffffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
980
981 /* Used only by the dynamic linker. When the object is run, this
982 longword is set to the load address of the object, plus the
983 addend. */
984 HOWTO (R_M32R_RELATIVE, /* type */
985 0, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 32, /* bitsize */
988 FALSE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_bitfield, /* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_M32R_RELATIVE", /* name */
993 FALSE, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 FALSE), /* pcrel_offset */
997
998 HOWTO (R_M32R_GOTOFF, /* type */
999 0, /* rightshift */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 24, /* bitsize */
1002 FALSE, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_bitfield, /* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_M32R_GOTOFF", /* name */
1007 FALSE, /* partial_inplace */
1008 0xffffff, /* src_mask */
1009 0xffffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1011
1012 /* An PC Relative 24-bit relocation used when setting PIC offset
1013 table register. */
1014 HOWTO (R_M32R_GOTPC24, /* type */
1015 0, /* rightshift */
1016 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 24, /* bitsize */
1018 TRUE, /* pc_relative */
1019 0, /* bitpos */
1020 complain_overflow_unsigned, /* complain_on_overflow */
1021 bfd_elf_generic_reloc, /* special_function */
1022 "R_M32R_GOTPC24", /* name */
1023 FALSE, /* partial_inplace */
1024 0xffffff, /* src_mask */
1025 0xffffff, /* dst_mask */
1026 TRUE), /* pcrel_offset */
1027
1028 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1029 the symbol. */
1030 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1031 16, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 16, /* bitsize */
1034 FALSE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_dont, /* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_M32R_GOT16_HI_ULO", /* name */
1039 FALSE, /* partial_inplace */
1040 0x0000ffff, /* src_mask */
1041 0x0000ffff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1043
1044 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1045 the symbol. */
1046 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1047 16, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 16, /* bitsize */
1050 FALSE, /* pc_relative */
1051 0, /* bitpos */
1052 complain_overflow_dont, /* complain_on_overflow */
1053 bfd_elf_generic_reloc, /* special_function */
1054 "R_M32R_GOT16_HI_SLO", /* name */
1055 FALSE, /* partial_inplace */
1056 0x0000ffff, /* src_mask */
1057 0x0000ffff, /* dst_mask */
1058 FALSE), /* pcrel_offset */
1059
1060 /* Like R_M32R_LO16, but referring to the GOT table entry for
1061 the symbol. */
1062 HOWTO (R_M32R_GOT16_LO, /* type */
1063 0, /* rightshift */
1064 2, /* size (0 = byte, 1 = short, 2 = long) */
1065 16, /* bitsize */
1066 FALSE, /* pc_relative */
1067 0, /* bitpos */
1068 complain_overflow_dont, /* complain_on_overflow */
1069 bfd_elf_generic_reloc, /* special_function */
1070 "R_M32R_GOT16_LO", /* name */
1071 FALSE, /* partial_inplace */
1072 0x0000ffff, /* src_mask */
1073 0x0000ffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1075
1076 /* An PC Relative relocation used when setting PIC offset table register.
1077 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1078 the symbol. */
1079 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1080 16, /* rightshift */
1081 2, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 bfd_elf_generic_reloc, /* special_function */
1087 "R_M32R_GOTPC_HI_ULO", /* name */
1088 FALSE, /* partial_inplace */
1089 0x0000ffff, /* src_mask */
1090 0x0000ffff, /* dst_mask */
1091 TRUE), /* pcrel_offset */
1092
1093 /* An PC Relative relocation used when setting PIC offset table register.
1094 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1095 the symbol. */
1096 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1097 16, /* rightshift */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 16, /* bitsize */
1100 FALSE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont, /* complain_on_overflow */
1103 bfd_elf_generic_reloc, /* special_function */
1104 "R_M32R_GOTPC_HI_SLO", /* name */
1105 FALSE, /* partial_inplace */
1106 0x0000ffff, /* src_mask */
1107 0x0000ffff, /* dst_mask */
1108 TRUE), /* pcrel_offset */
1109
1110 /* An PC Relative relocation used when setting PIC offset table register.
1111 Like R_M32R_LO16, but referring to the GOT table entry for
1112 the symbol. */
1113 HOWTO (R_M32R_GOTPC_LO, /* type */
1114 0, /* rightshift */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 16, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont, /* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 "R_M32R_GOTPC_LO", /* name */
1122 FALSE, /* partial_inplace */
1123 0x0000ffff, /* src_mask */
1124 0x0000ffff, /* dst_mask */
1125 TRUE), /* pcrel_offset */
1126
1127 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1128 16, /* rightshift */
1129 2, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont, /* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_M32R_GOTOFF_HI_ULO",/* name */
1136 FALSE, /* partial_inplace */
1137 0x0000ffff, /* src_mask */
1138 0x0000ffff, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1140
1141 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1142 16, /* rightshift */
1143 2, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 bfd_elf_generic_reloc, /* special_function */
1149 "R_M32R_GOTOFF_HI_SLO",/* name */
1150 FALSE, /* partial_inplace */
1151 0x0000ffff, /* src_mask */
1152 0x0000ffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1154
1155 HOWTO (R_M32R_GOTOFF_LO, /* type */
1156 0, /* rightshift */
1157 2, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 bfd_elf_generic_reloc, /* special_function */
1163 "R_M32R_GOTOFF_LO", /* name */
1164 FALSE, /* partial_inplace */
1165 0x0000ffff, /* src_mask */
1166 0x0000ffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168 };
1169
1170 /* Map BFD reloc types to M32R ELF reloc types. */
1171
1172 struct m32r_reloc_map
1173 {
1174 bfd_reloc_code_real_type bfd_reloc_val;
1175 unsigned char elf_reloc_val;
1176 };
1177
1178 #ifdef USE_M32R_OLD_RELOC
1179 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1180 {
1181 { BFD_RELOC_NONE, R_M32R_NONE },
1182 { BFD_RELOC_16, R_M32R_16 },
1183 { BFD_RELOC_32, R_M32R_32 },
1184 { BFD_RELOC_M32R_24, R_M32R_24 },
1185 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1186 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1187 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1188 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1189 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1190 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1191 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1192 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1193 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1194 };
1195 #else
1196 static const struct m32r_reloc_map m32r_reloc_map[] =
1197 {
1198 { BFD_RELOC_NONE, R_M32R_NONE },
1199 { BFD_RELOC_16, R_M32R_16_RELA },
1200 { BFD_RELOC_32, R_M32R_32_RELA },
1201 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1202 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1203 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1204 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1205 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1206 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1207 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1208 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1209 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1210 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1211 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1212
1213 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1214 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1215 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1216 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1217 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1218 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1219 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1220 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1221 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1222 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1223 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1224 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1225 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1226 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1228 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1229 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1230 };
1231 #endif
1232
1233 static reloc_howto_type *
1234 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1235 bfd_reloc_code_real_type code)
1236 {
1237 unsigned int i;
1238
1239 #ifdef USE_M32R_OLD_RELOC
1240 for (i = 0;
1241 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1242 i++)
1243 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1244 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1245
1246 #else /* ! USE_M32R_OLD_RELOC */
1247
1248 for (i = 0;
1249 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1250 i++)
1251 if (m32r_reloc_map[i].bfd_reloc_val == code)
1252 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1253 #endif
1254
1255 return NULL;
1256 }
1257
1258 static reloc_howto_type *
1259 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1260 const char *r_name)
1261 {
1262 unsigned int i;
1263
1264 for (i = 0;
1265 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
1266 i++)
1267 if (m32r_elf_howto_table[i].name != NULL
1268 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
1269 return &m32r_elf_howto_table[i];
1270
1271 return NULL;
1272 }
1273
1274 /* Set the howto pointer for an M32R ELF reloc. */
1275
1276 static void
1277 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1278 arelent *cache_ptr,
1279 Elf_Internal_Rela *dst)
1280 {
1281 unsigned int r_type;
1282
1283 r_type = ELF32_R_TYPE (dst->r_info);
1284 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1285 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1286 }
1287
1288 static void
1289 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1290 arelent *cache_ptr,
1291 Elf_Internal_Rela *dst)
1292 {
1293 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1294 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1295 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1296 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1297 }
1298
1299 \f
1300 /* Given a BFD section, try to locate the corresponding ELF section
1301 index. */
1302
1303 static bfd_boolean
1304 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1305 asection *sec,
1306 int *retval)
1307 {
1308 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1309 {
1310 *retval = SHN_M32R_SCOMMON;
1311 return TRUE;
1312 }
1313 return FALSE;
1314 }
1315
1316 /* M32R ELF uses two common sections. One is the usual one, and the other
1317 is for small objects. All the small objects are kept together, and then
1318 referenced via one register, which yields faster assembler code. It is
1319 up to the compiler to emit an instruction to load the register with
1320 _SDA_BASE. This is what we use for the small common section. This
1321 approach is copied from elf32-mips.c. */
1322 static asection m32r_elf_scom_section;
1323 static asymbol m32r_elf_scom_symbol;
1324 static asymbol *m32r_elf_scom_symbol_ptr;
1325
1326 /* Handle the special M32R section numbers that a symbol may use. */
1327
1328 static void
1329 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1330 {
1331 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1332
1333 switch (elfsym->internal_elf_sym.st_shndx)
1334 {
1335 case SHN_M32R_SCOMMON:
1336 if (m32r_elf_scom_section.name == NULL)
1337 {
1338 /* Initialize the small common section. */
1339 m32r_elf_scom_section.name = ".scommon";
1340 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1341 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1342 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1343 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1344 m32r_elf_scom_symbol.name = ".scommon";
1345 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1346 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1347 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1348 }
1349 asym->section = &m32r_elf_scom_section;
1350 asym->value = elfsym->internal_elf_sym.st_size;
1351 break;
1352 }
1353 }
1354
1355 /* Hook called by the linker routine which adds symbols from an object
1356 file. We must handle the special M32R section numbers here.
1357 We also keep watching for whether we need to create the sdata special
1358 linker sections. */
1359
1360 static bfd_boolean
1361 m32r_elf_add_symbol_hook (bfd *abfd,
1362 struct bfd_link_info *info,
1363 Elf_Internal_Sym *sym,
1364 const char **namep,
1365 flagword *flagsp ATTRIBUTE_UNUSED,
1366 asection **secp,
1367 bfd_vma *valp)
1368 {
1369 if (! info->relocatable
1370 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1371 && strcmp (*namep, "_SDA_BASE_") == 0
1372 && is_elf_hash_table (info->hash))
1373 {
1374 /* This is simpler than using _bfd_elf_create_linker_section
1375 (our needs are simpler than ppc's needs). Also
1376 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1377 section already exists a new one is created that follows it which
1378 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1379 struct elf_link_hash_entry *h;
1380 struct bfd_link_hash_entry *bh;
1381 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1382
1383 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1384 if (s == NULL)
1385 {
1386 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1387 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1388
1389 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1390 flags);
1391 if (s == NULL)
1392 return FALSE;
1393 bfd_set_section_alignment (abfd, s, 2);
1394 }
1395
1396 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1397 FALSE, FALSE, FALSE);
1398
1399 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1400 && !(_bfd_generic_link_add_one_symbol (info,
1401 abfd,
1402 "_SDA_BASE_",
1403 BSF_GLOBAL,
1404 s,
1405 (bfd_vma) 32768,
1406 NULL,
1407 FALSE,
1408 get_elf_backend_data (abfd)->collect,
1409 &bh)))
1410 return FALSE;
1411 h = (struct elf_link_hash_entry *) bh;
1412 h->type = STT_OBJECT;
1413 }
1414
1415 switch (sym->st_shndx)
1416 {
1417 case SHN_M32R_SCOMMON:
1418 *secp = bfd_make_section_old_way (abfd, ".scommon");
1419 (*secp)->flags |= SEC_IS_COMMON;
1420 *valp = sym->st_size;
1421 break;
1422 }
1423
1424 return TRUE;
1425 }
1426
1427 /* We have to figure out the SDA_BASE value, so that we can adjust the
1428 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1429 BFD. If we can't find it, we're stuck. We cache it in the ELF
1430 target data. We don't need to adjust the symbol value for an
1431 external symbol if we are producing relocatable output. */
1432
1433 static bfd_reloc_status_type
1434 m32r_elf_final_sda_base (bfd *output_bfd,
1435 struct bfd_link_info *info,
1436 const char **error_message,
1437 bfd_vma *psb)
1438 {
1439 if (elf_gp (output_bfd) == 0)
1440 {
1441 struct bfd_link_hash_entry *h;
1442
1443 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1444 if (h != NULL && h->type == bfd_link_hash_defined)
1445 elf_gp (output_bfd) = (h->u.def.value
1446 + h->u.def.section->output_section->vma
1447 + h->u.def.section->output_offset);
1448 else
1449 {
1450 /* Only get the error once. */
1451 *psb = elf_gp (output_bfd) = 4;
1452 *error_message =
1453 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1454 return bfd_reloc_dangerous;
1455 }
1456 }
1457 *psb = elf_gp (output_bfd);
1458 return bfd_reloc_ok;
1459 }
1460 \f
1461 /* Return size of a PLT entry. */
1462 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1463
1464 /* The m32r linker needs to keep track of the number of relocs that it
1465 decides to copy in check_relocs for each symbol. This is so that
1466 it can discard PC relative relocs if it doesn't need them when
1467 linking with -Bsymbolic. We store the information in a field
1468 extending the regular ELF linker hash table. */
1469
1470 /* This structure keeps track of the number of PC relative relocs we
1471 have copied for a given symbol. */
1472
1473 struct elf_m32r_pcrel_relocs_copied
1474 {
1475 /* Next section. */
1476 struct elf_m32r_pcrel_relocs_copied *next;
1477 /* A section in dynobj. */
1478 asection *section;
1479 /* Number of relocs copied in this section. */
1480 bfd_size_type count;
1481 };
1482
1483 /* The sh linker needs to keep track of the number of relocs that it
1484 decides to copy as dynamic relocs in check_relocs for each symbol.
1485 This is so that it can later discard them if they are found to be
1486 unnecessary. We store the information in a field extending the
1487 regular ELF linker hash table. */
1488
1489 struct elf_m32r_dyn_relocs
1490 {
1491 struct elf_m32r_dyn_relocs *next;
1492
1493 /* The input section of the reloc. */
1494 asection *sec;
1495
1496 /* Total number of relocs copied for the input section. */
1497 bfd_size_type count;
1498
1499 /* Number of pc-relative relocs copied for the input section. */
1500 bfd_size_type pc_count;
1501 };
1502
1503
1504 /* m32r ELF linker hash entry. */
1505
1506 struct elf_m32r_link_hash_entry
1507 {
1508 struct elf_link_hash_entry root;
1509
1510 /* Track dynamic relocs copied for this symbol. */
1511 struct elf_m32r_dyn_relocs *dyn_relocs;
1512 };
1513
1514 /* m32r ELF linker hash table. */
1515
1516 struct elf_m32r_link_hash_table
1517 {
1518 struct elf_link_hash_table root;
1519
1520 /* Short-cuts to get to dynamic linker sections. */
1521 asection *sgot;
1522 asection *sgotplt;
1523 asection *srelgot;
1524 asection *splt;
1525 asection *srelplt;
1526 asection *sdynbss;
1527 asection *srelbss;
1528
1529 /* Small local sym cache. */
1530 struct sym_cache sym_cache;
1531 };
1532
1533 /* Traverse an m32r ELF linker hash table. */
1534
1535 #define m32r_elf_link_hash_traverse(table, func, info) \
1536 (elf_link_hash_traverse \
1537 (&(table)->root, \
1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1539 (info)))
1540
1541 /* Get the m32r ELF linker hash table from a link_info structure. */
1542
1543 #define m32r_elf_hash_table(p) \
1544 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1545 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
1546
1547 /* Create an entry in an m32r ELF linker hash table. */
1548
1549 static struct bfd_hash_entry *
1550 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1551 struct bfd_hash_table *table,
1552 const char *string)
1553 {
1554 struct elf_m32r_link_hash_entry *ret =
1555 (struct elf_m32r_link_hash_entry *) entry;
1556
1557 /* Allocate the structure if it has not already been allocated by a
1558 subclass. */
1559 if (ret == NULL)
1560 ret = bfd_hash_allocate (table,
1561 sizeof (struct elf_m32r_link_hash_entry));
1562 if (ret == NULL)
1563 return NULL;
1564
1565 /* Call the allocation method of the superclass. */
1566 ret = ((struct elf_m32r_link_hash_entry *)
1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1568 table, string));
1569 if (ret != NULL)
1570 {
1571 struct elf_m32r_link_hash_entry *eh;
1572
1573 eh = (struct elf_m32r_link_hash_entry *) ret;
1574 eh->dyn_relocs = NULL;
1575 }
1576
1577 return (struct bfd_hash_entry *) ret;
1578 }
1579
1580 /* Create an m32r ELF linker hash table. */
1581
1582 static struct bfd_link_hash_table *
1583 m32r_elf_link_hash_table_create (bfd *abfd)
1584 {
1585 struct elf_m32r_link_hash_table *ret;
1586 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1587
1588 ret = bfd_malloc (amt);
1589 if (ret == NULL)
1590 return NULL;
1591
1592 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1593 m32r_elf_link_hash_newfunc,
1594 sizeof (struct elf_m32r_link_hash_entry),
1595 M32R_ELF_DATA))
1596 {
1597 free (ret);
1598 return NULL;
1599 }
1600
1601 ret->sgot = NULL;
1602 ret->sgotplt = NULL;
1603 ret->srelgot = NULL;
1604 ret->splt = NULL;
1605 ret->srelplt = NULL;
1606 ret->sdynbss = NULL;
1607 ret->srelbss = NULL;
1608 ret->sym_cache.abfd = NULL;
1609
1610 return &ret->root.root;
1611 }
1612
1613 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1614 shortcuts to them in our hash table. */
1615
1616 static bfd_boolean
1617 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1618 {
1619 struct elf_m32r_link_hash_table *htab;
1620
1621 if (! _bfd_elf_create_got_section (dynobj, info))
1622 return FALSE;
1623
1624 htab = m32r_elf_hash_table (info);
1625 if (htab == NULL)
1626 return FALSE;
1627
1628 htab->sgot = bfd_get_linker_section (dynobj, ".got");
1629 htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
1630 htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got");
1631 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
1632 abort ();
1633
1634 return TRUE;
1635 }
1636
1637 /* Create dynamic sections when linking against a dynamic object. */
1638
1639 static bfd_boolean
1640 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1641 {
1642 struct elf_m32r_link_hash_table *htab;
1643 flagword flags, pltflags;
1644 asection *s;
1645 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1646 int ptralign = 2; /* 32bit */
1647
1648 htab = m32r_elf_hash_table (info);
1649 if (htab == NULL)
1650 return FALSE;
1651
1652 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1653 .rel[a].bss sections. */
1654 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1655 | SEC_LINKER_CREATED);
1656
1657 pltflags = flags;
1658 pltflags |= SEC_CODE;
1659 if (bed->plt_not_loaded)
1660 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1661 if (bed->plt_readonly)
1662 pltflags |= SEC_READONLY;
1663
1664 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
1665 htab->splt = s;
1666 if (s == NULL
1667 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1668 return FALSE;
1669
1670 if (bed->want_plt_sym)
1671 {
1672 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1673 .plt section. */
1674 struct bfd_link_hash_entry *bh = NULL;
1675 struct elf_link_hash_entry *h;
1676
1677 if (! (_bfd_generic_link_add_one_symbol
1678 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1679 (bfd_vma) 0, NULL, FALSE,
1680 get_elf_backend_data (abfd)->collect, &bh)))
1681 return FALSE;
1682 h = (struct elf_link_hash_entry *) bh;
1683 h->def_regular = 1;
1684 h->type = STT_OBJECT;
1685 htab->root.hplt = h;
1686
1687 if (info->shared
1688 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1689 return FALSE;
1690 }
1691
1692 s = bfd_make_section_anyway_with_flags (abfd,
1693 bed->default_use_rela_p
1694 ? ".rela.plt" : ".rel.plt",
1695 flags | SEC_READONLY);
1696 htab->srelplt = s;
1697 if (s == NULL
1698 || ! bfd_set_section_alignment (abfd, s, ptralign))
1699 return FALSE;
1700
1701 if (htab->sgot == NULL
1702 && ! create_got_section (abfd, info))
1703 return FALSE;
1704
1705 if (bed->want_dynbss)
1706 {
1707 /* The .dynbss section is a place to put symbols which are defined
1708 by dynamic objects, are referenced by regular objects, and are
1709 not functions. We must allocate space for them in the process
1710 image and use a R_*_COPY reloc to tell the dynamic linker to
1711 initialize them at run time. The linker script puts the .dynbss
1712 section into the .bss section of the final image. */
1713 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
1714 SEC_ALLOC | SEC_LINKER_CREATED);
1715 htab->sdynbss = s;
1716 if (s == NULL)
1717 return FALSE;
1718 /* The .rel[a].bss section holds copy relocs. This section is not
1719 normally needed. We need to create it here, though, so that the
1720 linker will map it to an output section. We can't just create it
1721 only if we need it, because we will not know whether we need it
1722 until we have seen all the input files, and the first time the
1723 main linker code calls BFD after examining all the input files
1724 (size_dynamic_sections) the input sections have already been
1725 mapped to the output sections. If the section turns out not to
1726 be needed, we can discard it later. We will never need this
1727 section when generating a shared object, since they do not use
1728 copy relocs. */
1729 if (! info->shared)
1730 {
1731 s = bfd_make_section_anyway_with_flags (abfd,
1732 (bed->default_use_rela_p
1733 ? ".rela.bss" : ".rel.bss"),
1734 flags | SEC_READONLY);
1735 htab->srelbss = s;
1736 if (s == NULL
1737 || ! bfd_set_section_alignment (abfd, s, ptralign))
1738 return FALSE;
1739 }
1740 }
1741
1742 return TRUE;
1743 }
1744
1745 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1746
1747 static void
1748 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1749 struct elf_link_hash_entry *dir,
1750 struct elf_link_hash_entry *ind)
1751 {
1752 struct elf_m32r_link_hash_entry * edir;
1753 struct elf_m32r_link_hash_entry * eind;
1754
1755 edir = (struct elf_m32r_link_hash_entry *) dir;
1756 eind = (struct elf_m32r_link_hash_entry *) ind;
1757
1758 if (eind->dyn_relocs != NULL)
1759 {
1760 if (edir->dyn_relocs != NULL)
1761 {
1762 struct elf_m32r_dyn_relocs **pp;
1763 struct elf_m32r_dyn_relocs *p;
1764
1765 /* Add reloc counts against the indirect sym to the direct sym
1766 list. Merge any entries against the same section. */
1767 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1768 {
1769 struct elf_m32r_dyn_relocs *q;
1770
1771 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1772 if (q->sec == p->sec)
1773 {
1774 q->pc_count += p->pc_count;
1775 q->count += p->count;
1776 *pp = p->next;
1777 break;
1778 }
1779 if (q == NULL)
1780 pp = &p->next;
1781 }
1782 *pp = edir->dyn_relocs;
1783 }
1784
1785 edir->dyn_relocs = eind->dyn_relocs;
1786 eind->dyn_relocs = NULL;
1787 }
1788
1789 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1790 }
1791
1792 \f
1793 /* Adjust a symbol defined by a dynamic object and referenced by a
1794 regular object. The current definition is in some section of the
1795 dynamic object, but we're not including those sections. We have to
1796 change the definition to something the rest of the link can
1797 understand. */
1798
1799 static bfd_boolean
1800 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1801 struct elf_link_hash_entry *h)
1802 {
1803 struct elf_m32r_link_hash_table *htab;
1804 struct elf_m32r_link_hash_entry *eh;
1805 struct elf_m32r_dyn_relocs *p;
1806 bfd *dynobj;
1807 asection *s;
1808
1809 #ifdef DEBUG_PIC
1810 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1811 #endif
1812
1813 dynobj = elf_hash_table (info)->dynobj;
1814
1815 /* Make sure we know what is going on here. */
1816 BFD_ASSERT (dynobj != NULL
1817 && (h->needs_plt
1818 || h->u.weakdef != NULL
1819 || (h->def_dynamic
1820 && h->ref_regular
1821 && !h->def_regular)));
1822
1823 /* If this is a function, put it in the procedure linkage table. We
1824 will fill in the contents of the procedure linkage table later,
1825 when we know the address of the .got section. */
1826 if (h->type == STT_FUNC
1827 || h->needs_plt)
1828 {
1829 if (! info->shared
1830 && !h->def_dynamic
1831 && !h->ref_dynamic
1832 && h->root.type != bfd_link_hash_undefweak
1833 && h->root.type != bfd_link_hash_undefined)
1834 {
1835 /* This case can occur if we saw a PLT reloc in an input
1836 file, but the symbol was never referred to by a dynamic
1837 object. In such a case, we don't actually need to build
1838 a procedure linkage table, and we can just do a PCREL
1839 reloc instead. */
1840 h->plt.offset = (bfd_vma) -1;
1841 h->needs_plt = 0;
1842 }
1843
1844 return TRUE;
1845 }
1846 else
1847 h->plt.offset = (bfd_vma) -1;
1848
1849 /* If this is a weak symbol, and there is a real definition, the
1850 processor independent code will have arranged for us to see the
1851 real definition first, and we can just use the same value. */
1852 if (h->u.weakdef != NULL)
1853 {
1854 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1855 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1856 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1857 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1858 return TRUE;
1859 }
1860
1861 /* This is a reference to a symbol defined by a dynamic object which
1862 is not a function. */
1863
1864 /* If we are creating a shared library, we must presume that the
1865 only references to the symbol are via the global offset table.
1866 For such cases we need not do anything here; the relocations will
1867 be handled correctly by relocate_section. */
1868 if (info->shared)
1869 return TRUE;
1870
1871 /* If there are no references to this symbol that do not use the
1872 GOT, we don't need to generate a copy reloc. */
1873 if (!h->non_got_ref)
1874 return TRUE;
1875
1876 /* If -z nocopyreloc was given, we won't generate them either. */
1877 if (info->nocopyreloc)
1878 {
1879 h->non_got_ref = 0;
1880 return TRUE;
1881 }
1882
1883 eh = (struct elf_m32r_link_hash_entry *) h;
1884 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1885 {
1886 s = p->sec->output_section;
1887 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1888 break;
1889 }
1890
1891 /* If we didn't find any dynamic relocs in sections which needs the
1892 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1893 the copy reloc. */
1894 if (p == NULL)
1895 {
1896 h->non_got_ref = 0;
1897 return TRUE;
1898 }
1899
1900 /* We must allocate the symbol in our .dynbss section, which will
1901 become part of the .bss section of the executable. There will be
1902 an entry for this symbol in the .dynsym section. The dynamic
1903 object will contain position independent code, so all references
1904 from the dynamic object to this symbol will go through the global
1905 offset table. The dynamic linker will use the .dynsym entry to
1906 determine the address it must put in the global offset table, so
1907 both the dynamic object and the regular object will refer to the
1908 same memory location for the variable. */
1909
1910 htab = m32r_elf_hash_table (info);
1911 if (htab == NULL)
1912 return FALSE;
1913
1914 s = htab->sdynbss;
1915 BFD_ASSERT (s != NULL);
1916
1917 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1918 to copy the initial value out of the dynamic object and into the
1919 runtime process image. We need to remember the offset into the
1920 .rela.bss section we are going to use. */
1921 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1922 {
1923 asection *srel;
1924
1925 srel = htab->srelbss;
1926 BFD_ASSERT (srel != NULL);
1927 srel->size += sizeof (Elf32_External_Rela);
1928 h->needs_copy = 1;
1929 }
1930
1931 return _bfd_elf_adjust_dynamic_copy (h, s);
1932 }
1933
1934 /* Allocate space in .plt, .got and associated reloc sections for
1935 dynamic relocs. */
1936
1937 static bfd_boolean
1938 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1939 {
1940 struct bfd_link_info *info;
1941 struct elf_m32r_link_hash_table *htab;
1942 struct elf_m32r_link_hash_entry *eh;
1943 struct elf_m32r_dyn_relocs *p;
1944
1945 if (h->root.type == bfd_link_hash_indirect)
1946 return TRUE;
1947
1948 info = (struct bfd_link_info *) inf;
1949 htab = m32r_elf_hash_table (info);
1950 if (htab == NULL)
1951 return FALSE;
1952
1953 eh = (struct elf_m32r_link_hash_entry *) h;
1954
1955 if (htab->root.dynamic_sections_created
1956 && h->plt.refcount > 0)
1957 {
1958 /* Make sure this symbol is output as a dynamic symbol.
1959 Undefined weak syms won't yet be marked as dynamic. */
1960 if (h->dynindx == -1
1961 && !h->forced_local)
1962 {
1963 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1964 return FALSE;
1965 }
1966
1967 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1968 {
1969 asection *s = htab->splt;
1970
1971 /* If this is the first .plt entry, make room for the special
1972 first entry. */
1973 if (s->size == 0)
1974 s->size += PLT_ENTRY_SIZE;
1975
1976 h->plt.offset = s->size;
1977
1978 /* If this symbol is not defined in a regular file, and we are
1979 not generating a shared library, then set the symbol to this
1980 location in the .plt. This is required to make function
1981 pointers compare as equal between the normal executable and
1982 the shared library. */
1983 if (! info->shared
1984 && !h->def_regular)
1985 {
1986 h->root.u.def.section = s;
1987 h->root.u.def.value = h->plt.offset;
1988 }
1989
1990 /* Make room for this entry. */
1991 s->size += PLT_ENTRY_SIZE;
1992
1993 /* We also need to make an entry in the .got.plt section, which
1994 will be placed in the .got section by the linker script. */
1995 htab->sgotplt->size += 4;
1996
1997 /* We also need to make an entry in the .rel.plt section. */
1998 htab->srelplt->size += sizeof (Elf32_External_Rela);
1999 }
2000 else
2001 {
2002 h->plt.offset = (bfd_vma) -1;
2003 h->needs_plt = 0;
2004 }
2005 }
2006 else
2007 {
2008 h->plt.offset = (bfd_vma) -1;
2009 h->needs_plt = 0;
2010 }
2011
2012 if (h->got.refcount > 0)
2013 {
2014 asection *s;
2015 bfd_boolean dyn;
2016
2017 /* Make sure this symbol is output as a dynamic symbol.
2018 Undefined weak syms won't yet be marked as dynamic. */
2019 if (h->dynindx == -1
2020 && !h->forced_local)
2021 {
2022 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2023 return FALSE;
2024 }
2025
2026 s = htab->sgot;
2027
2028 h->got.offset = s->size;
2029 s->size += 4;
2030 dyn = htab->root.dynamic_sections_created;
2031 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2032 htab->srelgot->size += sizeof (Elf32_External_Rela);
2033 }
2034 else
2035 h->got.offset = (bfd_vma) -1;
2036
2037 if (eh->dyn_relocs == NULL)
2038 return TRUE;
2039
2040 /* In the shared -Bsymbolic case, discard space allocated for
2041 dynamic pc-relative relocs against symbols which turn out to be
2042 defined in regular objects. For the normal shared case, discard
2043 space for pc-relative relocs that have become local due to symbol
2044 visibility changes. */
2045
2046 if (info->shared)
2047 {
2048 if (h->def_regular
2049 && (h->forced_local
2050 || info->symbolic))
2051 {
2052 struct elf_m32r_dyn_relocs **pp;
2053
2054 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2055 {
2056 p->count -= p->pc_count;
2057 p->pc_count = 0;
2058 if (p->count == 0)
2059 *pp = p->next;
2060 else
2061 pp = &p->next;
2062 }
2063 }
2064
2065 /* Also discard relocs on undefined weak syms with non-default
2066 visibility. */
2067 if (eh->dyn_relocs != NULL
2068 && h->root.type == bfd_link_hash_undefweak)
2069 {
2070 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2071 eh->dyn_relocs = NULL;
2072
2073 /* Make sure undefined weak symbols are output as a dynamic
2074 symbol in PIEs. */
2075 else if (h->dynindx == -1
2076 && !h->forced_local)
2077 {
2078 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2079 return FALSE;
2080 }
2081 }
2082 }
2083 else
2084 {
2085 /* For the non-shared case, discard space for relocs against
2086 symbols which turn out to need copy relocs or are not
2087 dynamic. */
2088
2089 if (!h->non_got_ref
2090 && ((h->def_dynamic
2091 && !h->def_regular)
2092 || (htab->root.dynamic_sections_created
2093 && (h->root.type == bfd_link_hash_undefweak
2094 || h->root.type == bfd_link_hash_undefined))))
2095 {
2096 /* Make sure this symbol is output as a dynamic symbol.
2097 Undefined weak syms won't yet be marked as dynamic. */
2098 if (h->dynindx == -1
2099 && !h->forced_local)
2100 {
2101 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2102 return FALSE;
2103 }
2104
2105 /* If that succeeded, we know we'll be keeping all the
2106 relocs. */
2107 if (h->dynindx != -1)
2108 goto keep;
2109 }
2110
2111 eh->dyn_relocs = NULL;
2112
2113 keep: ;
2114 }
2115
2116 /* Finally, allocate space. */
2117 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2118 {
2119 asection *sreloc = elf_section_data (p->sec)->sreloc;
2120 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2121 }
2122
2123 return TRUE;
2124 }
2125
2126 /* Find any dynamic relocs that apply to read-only sections. */
2127
2128 static bfd_boolean
2129 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2130 {
2131 struct elf_m32r_link_hash_entry *eh;
2132 struct elf_m32r_dyn_relocs *p;
2133
2134 eh = (struct elf_m32r_link_hash_entry *) h;
2135 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2136 {
2137 asection *s = p->sec->output_section;
2138
2139 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2140 {
2141 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2142
2143 info->flags |= DF_TEXTREL;
2144
2145 /* Not an error, just cut short the traversal. */
2146 return FALSE;
2147 }
2148 }
2149 return TRUE;
2150 }
2151
2152 /* Set the sizes of the dynamic sections. */
2153
2154 static bfd_boolean
2155 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2156 struct bfd_link_info *info)
2157 {
2158 struct elf_m32r_link_hash_table *htab;
2159 bfd *dynobj;
2160 asection *s;
2161 bfd_boolean relocs;
2162 bfd *ibfd;
2163
2164 #ifdef DEBUG_PIC
2165 printf ("m32r_elf_size_dynamic_sections()\n");
2166 #endif
2167
2168 htab = m32r_elf_hash_table (info);
2169 if (htab == NULL)
2170 return FALSE;
2171
2172 dynobj = htab->root.dynobj;
2173 BFD_ASSERT (dynobj != NULL);
2174
2175 if (htab->root.dynamic_sections_created)
2176 {
2177 /* Set the contents of the .interp section to the interpreter. */
2178 if (info->executable)
2179 {
2180 s = bfd_get_linker_section (dynobj, ".interp");
2181 BFD_ASSERT (s != NULL);
2182 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2183 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2184 }
2185 }
2186
2187 /* Set up .got offsets for local syms, and space for local dynamic
2188 relocs. */
2189 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2190 {
2191 bfd_signed_vma *local_got;
2192 bfd_signed_vma *end_local_got;
2193 bfd_size_type locsymcount;
2194 Elf_Internal_Shdr *symtab_hdr;
2195 asection *srel;
2196
2197 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2198 continue;
2199
2200 for (s = ibfd->sections; s != NULL; s = s->next)
2201 {
2202 struct elf_m32r_dyn_relocs *p;
2203
2204 for (p = ((struct elf_m32r_dyn_relocs *)
2205 elf_section_data (s)->local_dynrel);
2206 p != NULL;
2207 p = p->next)
2208 {
2209 if (! bfd_is_abs_section (p->sec)
2210 && bfd_is_abs_section (p->sec->output_section))
2211 {
2212 /* Input section has been discarded, either because
2213 it is a copy of a linkonce section or due to
2214 linker script /DISCARD/, so we'll be discarding
2215 the relocs too. */
2216 }
2217 else if (p->count != 0)
2218 {
2219 srel = elf_section_data (p->sec)->sreloc;
2220 srel->size += p->count * sizeof (Elf32_External_Rela);
2221 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2222 info->flags |= DF_TEXTREL;
2223 }
2224 }
2225 }
2226
2227 local_got = elf_local_got_refcounts (ibfd);
2228 if (!local_got)
2229 continue;
2230
2231 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2232 locsymcount = symtab_hdr->sh_info;
2233 end_local_got = local_got + locsymcount;
2234 s = htab->sgot;
2235 srel = htab->srelgot;
2236 for (; local_got < end_local_got; ++local_got)
2237 {
2238 if (*local_got > 0)
2239 {
2240 *local_got = s->size;
2241 s->size += 4;
2242 if (info->shared)
2243 srel->size += sizeof (Elf32_External_Rela);
2244 }
2245 else
2246 *local_got = (bfd_vma) -1;
2247 }
2248 }
2249
2250 /* Allocate global sym .plt and .got entries, and space for global
2251 sym dynamic relocs. */
2252 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2253
2254 /* We now have determined the sizes of the various dynamic sections.
2255 Allocate memory for them. */
2256 relocs = FALSE;
2257 for (s = dynobj->sections; s != NULL; s = s->next)
2258 {
2259 if ((s->flags & SEC_LINKER_CREATED) == 0)
2260 continue;
2261
2262 if (s == htab->splt
2263 || s == htab->sgot
2264 || s == htab->sgotplt
2265 || s == htab->sdynbss)
2266 {
2267 /* Strip this section if we don't need it; see the
2268 comment below. */
2269 }
2270 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2271 {
2272 if (s->size != 0 && s != htab->srelplt)
2273 relocs = TRUE;
2274
2275 /* We use the reloc_count field as a counter if we need
2276 to copy relocs into the output file. */
2277 s->reloc_count = 0;
2278 }
2279 else
2280 /* It's not one of our sections, so don't allocate space. */
2281 continue;
2282
2283 if (s->size == 0)
2284 {
2285 /* If we don't need this section, strip it from the
2286 output file. This is mostly to handle .rela.bss and
2287 .rela.plt. We must create both sections in
2288 create_dynamic_sections, because they must be created
2289 before the linker maps input sections to output
2290 sections. The linker does that before
2291 adjust_dynamic_symbol is called, and it is that
2292 function which decides whether anything needs to go
2293 into these sections. */
2294 s->flags |= SEC_EXCLUDE;
2295 continue;
2296 }
2297
2298 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2299 continue;
2300
2301 /* Allocate memory for the section contents. We use bfd_zalloc
2302 here in case unused entries are not reclaimed before the
2303 section's contents are written out. This should not happen,
2304 but this way if it does, we get a R_M32R_NONE reloc instead
2305 of garbage. */
2306 s->contents = bfd_zalloc (dynobj, s->size);
2307 if (s->contents == NULL)
2308 return FALSE;
2309 }
2310
2311 if (htab->root.dynamic_sections_created)
2312 {
2313 /* Add some entries to the .dynamic section. We fill in the
2314 values later, in m32r_elf_finish_dynamic_sections, but we
2315 must add the entries now so that we get the correct size for
2316 the .dynamic section. The DT_DEBUG entry is filled in by the
2317 dynamic linker and used by the debugger. */
2318 #define add_dynamic_entry(TAG, VAL) \
2319 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2320
2321 if (info->executable)
2322 {
2323 if (! add_dynamic_entry (DT_DEBUG, 0))
2324 return FALSE;
2325 }
2326
2327 if (htab->splt->size != 0)
2328 {
2329 if (! add_dynamic_entry (DT_PLTGOT, 0)
2330 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2331 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2332 || ! add_dynamic_entry (DT_JMPREL, 0))
2333 return FALSE;
2334 }
2335
2336 if (relocs)
2337 {
2338 if (! add_dynamic_entry (DT_RELA, 0)
2339 || ! add_dynamic_entry (DT_RELASZ, 0)
2340 || ! add_dynamic_entry (DT_RELAENT,
2341 sizeof (Elf32_External_Rela)))
2342 return FALSE;
2343
2344 /* If any dynamic relocs apply to a read-only section,
2345 then we need a DT_TEXTREL entry. */
2346 if ((info->flags & DF_TEXTREL) == 0)
2347 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2348 info);
2349
2350 if ((info->flags & DF_TEXTREL) != 0)
2351 {
2352 if (! add_dynamic_entry (DT_TEXTREL, 0))
2353 return FALSE;
2354 }
2355 }
2356 }
2357 #undef add_dynamic_entry
2358
2359 return TRUE;
2360 }
2361
2362 /* Relocate an M32R/D ELF section.
2363 There is some attempt to make this function usable for many architectures,
2364 both for RELA and REL type relocs, if only to serve as a learning tool.
2365
2366 The RELOCATE_SECTION function is called by the new ELF backend linker
2367 to handle the relocations for a section.
2368
2369 The relocs are always passed as Rela structures; if the section
2370 actually uses Rel structures, the r_addend field will always be
2371 zero.
2372
2373 This function is responsible for adjust the section contents as
2374 necessary, and (if using Rela relocs and generating a
2375 relocatable output file) adjusting the reloc addend as
2376 necessary.
2377
2378 This function does not have to worry about setting the reloc
2379 address or the reloc symbol index.
2380
2381 LOCAL_SYMS is a pointer to the swapped in local symbols.
2382
2383 LOCAL_SECTIONS is an array giving the section in the input file
2384 corresponding to the st_shndx field of each local symbol.
2385
2386 The global hash table entry for the global symbols can be found
2387 via elf_sym_hashes (input_bfd).
2388
2389 When generating relocatable output, this function must handle
2390 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2391 going to be the section symbol corresponding to the output
2392 section, which means that the addend must be adjusted
2393 accordingly. */
2394
2395 static bfd_boolean
2396 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2397 struct bfd_link_info *info,
2398 bfd *input_bfd,
2399 asection *input_section,
2400 bfd_byte *contents,
2401 Elf_Internal_Rela *relocs,
2402 Elf_Internal_Sym *local_syms,
2403 asection **local_sections)
2404 {
2405 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2406 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2407 Elf_Internal_Rela *rel, *relend;
2408 /* Assume success. */
2409 bfd_boolean ret = TRUE;
2410 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2411 bfd *dynobj;
2412 bfd_vma *local_got_offsets;
2413 asection *sgot, *splt, *sreloc;
2414 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2415
2416 if (htab == NULL)
2417 return FALSE;
2418
2419 dynobj = htab->root.dynobj;
2420 local_got_offsets = elf_local_got_offsets (input_bfd);
2421
2422 sgot = htab->sgot;
2423 splt = htab->splt;
2424 sreloc = NULL;
2425
2426 rel = relocs;
2427 relend = relocs + input_section->reloc_count;
2428 for (; rel < relend; rel++)
2429 {
2430 int r_type;
2431 reloc_howto_type *howto;
2432 unsigned long r_symndx;
2433 struct elf_link_hash_entry *h;
2434 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2435 ensure it's zero (we use REL relocs, not RELA). Therefore this
2436 should be assigning zero to `addend', but for clarity we use
2437 `r_addend'. */
2438 bfd_vma addend = rel->r_addend;
2439 bfd_vma offset = rel->r_offset;
2440 bfd_vma relocation;
2441 Elf_Internal_Sym *sym;
2442 asection *sec;
2443 const char *sym_name;
2444 bfd_reloc_status_type r;
2445 const char *errmsg = NULL;
2446 bfd_boolean use_rel = FALSE;
2447
2448 h = NULL;
2449 r_type = ELF32_R_TYPE (rel->r_info);
2450 if (r_type < 0 || r_type >= (int) R_M32R_max)
2451 {
2452 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2453 input_bfd,
2454 (int) r_type);
2455 bfd_set_error (bfd_error_bad_value);
2456 ret = FALSE;
2457 continue;
2458 }
2459
2460 if ( r_type == R_M32R_GNU_VTENTRY
2461 || r_type == R_M32R_GNU_VTINHERIT
2462 || r_type == R_M32R_NONE
2463 || r_type == R_M32R_RELA_GNU_VTENTRY
2464 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2465 continue;
2466
2467 if (r_type <= R_M32R_GNU_VTENTRY)
2468 use_rel = TRUE;
2469
2470 howto = m32r_elf_howto_table + r_type;
2471 r_symndx = ELF32_R_SYM (rel->r_info);
2472
2473 sym = NULL;
2474 sec = NULL;
2475 h = NULL;
2476
2477 if (r_symndx < symtab_hdr->sh_info)
2478 {
2479 /* Local symbol. */
2480 sym = local_syms + r_symndx;
2481 sec = local_sections[r_symndx];
2482 sym_name = "<local symbol>";
2483
2484 if (!use_rel)
2485 {
2486 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2487 addend = rel->r_addend;
2488 }
2489 else
2490 {
2491 relocation = (sec->output_section->vma
2492 + sec->output_offset
2493 + sym->st_value);
2494 }
2495 }
2496 else
2497 {
2498 /* External symbol. */
2499 relocation = 0;
2500
2501 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2502 while (h->root.type == bfd_link_hash_indirect
2503 || h->root.type == bfd_link_hash_warning)
2504 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2505 sym_name = h->root.root.string;
2506
2507 if (h->root.type == bfd_link_hash_defined
2508 || h->root.type == bfd_link_hash_defweak)
2509 {
2510 bfd_boolean dyn;
2511 sec = h->root.u.def.section;
2512
2513 dyn = htab->root.dynamic_sections_created;
2514 sec = h->root.u.def.section;
2515 if (r_type == R_M32R_GOTPC24
2516 || (r_type == R_M32R_GOTPC_HI_ULO
2517 || r_type == R_M32R_GOTPC_HI_SLO
2518 || r_type == R_M32R_GOTPC_LO)
2519 || (r_type == R_M32R_26_PLTREL
2520 && h->plt.offset != (bfd_vma) -1)
2521 || ((r_type == R_M32R_GOT24
2522 || r_type == R_M32R_GOT16_HI_ULO
2523 || r_type == R_M32R_GOT16_HI_SLO
2524 || r_type == R_M32R_GOT16_LO)
2525 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2526 info->shared, h)
2527 && (! info->shared
2528 || (! info->symbolic && h->dynindx != -1)
2529 || !h->def_regular))
2530 || (info->shared
2531 && ((! info->symbolic && h->dynindx != -1)
2532 || !h->def_regular)
2533 && (((r_type == R_M32R_16_RELA
2534 || r_type == R_M32R_32_RELA
2535 || r_type == R_M32R_24_RELA
2536 || r_type == R_M32R_HI16_ULO_RELA
2537 || r_type == R_M32R_HI16_SLO_RELA
2538 || r_type == R_M32R_LO16_RELA)
2539 && !h->forced_local)
2540 || r_type == R_M32R_REL32
2541 || r_type == R_M32R_10_PCREL_RELA
2542 || r_type == R_M32R_18_PCREL_RELA
2543 || r_type == R_M32R_26_PCREL_RELA)
2544 && ((input_section->flags & SEC_ALLOC) != 0
2545 /* DWARF will emit R_M32R_16(24,32) relocations
2546 in its sections against symbols defined
2547 externally in shared libraries. We can't do
2548 anything with them here. */
2549 || ((input_section->flags & SEC_DEBUGGING) != 0
2550 && h->def_dynamic))))
2551 {
2552 /* In these cases, we don't need the relocation
2553 value. We check specially because in some
2554 obscure cases sec->output_section will be NULL. */
2555 }
2556 else if (sec->output_section != NULL)
2557 relocation = (h->root.u.def.value
2558 + sec->output_section->vma
2559 + sec->output_offset);
2560 else if (!info->relocatable
2561 && (_bfd_elf_section_offset (output_bfd, info,
2562 input_section,
2563 rel->r_offset)
2564 != (bfd_vma) -1))
2565 {
2566 (*_bfd_error_handler)
2567 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2568 input_bfd,
2569 input_section,
2570 (long) rel->r_offset,
2571 howto->name,
2572 h->root.root.string);
2573 }
2574 }
2575 else if (h->root.type == bfd_link_hash_undefweak)
2576 ;
2577 else if (info->unresolved_syms_in_objects == RM_IGNORE
2578 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2579 ;
2580 else if (!info->relocatable)
2581 {
2582 if (! ((*info->callbacks->undefined_symbol)
2583 (info, h->root.root.string, input_bfd,
2584 input_section, offset,
2585 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2586 || ELF_ST_VISIBILITY (h->other)))))
2587 return FALSE;
2588 }
2589 }
2590
2591 if (sec != NULL && discarded_section (sec))
2592 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2593 rel, 1, relend, howto, 0, contents);
2594
2595 if (info->relocatable && !use_rel)
2596 {
2597 /* This is a relocatable link. We don't have to change
2598 anything, unless the reloc is against a section symbol,
2599 in which case we have to adjust according to where the
2600 section symbol winds up in the output section. */
2601 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2602 rel->r_addend += sec->output_offset;
2603 continue;
2604 }
2605
2606 if (info->relocatable && use_rel)
2607 {
2608 /* This is a relocatable link. We don't have to change
2609 anything, unless the reloc is against a section symbol,
2610 in which case we have to adjust according to where the
2611 section symbol winds up in the output section. */
2612 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2613 continue;
2614
2615 addend += sec->output_offset;
2616
2617 /* If partial_inplace, we need to store any additional addend
2618 back in the section. */
2619 if (! howto->partial_inplace)
2620 continue;
2621 /* ??? Here is a nice place to call a special_function
2622 like handler. */
2623 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2624 r = _bfd_relocate_contents (howto, input_bfd,
2625 addend, contents + offset);
2626 else
2627 {
2628 Elf_Internal_Rela *lorel;
2629
2630 /* We allow an arbitrary number of HI16 relocs before the
2631 LO16 reloc. This permits gcc to emit the HI and LO relocs
2632 itself. */
2633 for (lorel = rel + 1;
2634 (lorel < relend
2635 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2636 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2637 lorel++)
2638 continue;
2639 if (lorel < relend
2640 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2641 {
2642 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2643 contents, addend);
2644 r = bfd_reloc_ok;
2645 }
2646 else
2647 r = _bfd_relocate_contents (howto, input_bfd,
2648 addend, contents + offset);
2649 }
2650 }
2651 else
2652 {
2653 /* Sanity check the address. */
2654 if (offset > high_address)
2655 {
2656 r = bfd_reloc_outofrange;
2657 goto check_reloc;
2658 }
2659
2660 switch ((int) r_type)
2661 {
2662 case R_M32R_GOTOFF:
2663 /* Relocation is relative to the start of the global offset
2664 table (for ld24 rx, #uimm24). eg access at label+addend
2665
2666 ld24 rx. #label@GOTOFF + addend
2667 sub rx, r12. */
2668
2669 BFD_ASSERT (sgot != NULL);
2670
2671 relocation = -(relocation - sgot->output_section->vma);
2672 rel->r_addend = -rel->r_addend;
2673 break;
2674
2675 case R_M32R_GOTOFF_HI_ULO:
2676 case R_M32R_GOTOFF_HI_SLO:
2677 case R_M32R_GOTOFF_LO:
2678 BFD_ASSERT (sgot != NULL);
2679
2680 relocation -= sgot->output_section->vma;
2681
2682 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2683 && ((relocation + rel->r_addend) & 0x8000))
2684 rel->r_addend += 0x10000;
2685 break;
2686
2687 case R_M32R_GOTPC24:
2688 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2689 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2690 */
2691 relocation = sgot->output_section->vma;
2692 break;
2693
2694 case R_M32R_GOTPC_HI_ULO:
2695 case R_M32R_GOTPC_HI_SLO:
2696 case R_M32R_GOTPC_LO:
2697 {
2698 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2699 bl .+4
2700 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2701 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2702 or
2703 bl .+4
2704 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2705 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2706 */
2707 relocation = sgot->output_section->vma;
2708 relocation -= (input_section->output_section->vma
2709 + input_section->output_offset
2710 + rel->r_offset);
2711 if ((r_type == R_M32R_GOTPC_HI_SLO)
2712 && ((relocation + rel->r_addend) & 0x8000))
2713 rel->r_addend += 0x10000;
2714
2715 break;
2716 }
2717 case R_M32R_GOT16_HI_ULO:
2718 case R_M32R_GOT16_HI_SLO:
2719 case R_M32R_GOT16_LO:
2720 /* Fall through. */
2721 case R_M32R_GOT24:
2722 /* Relocation is to the entry for this symbol in the global
2723 offset table. */
2724 BFD_ASSERT (sgot != NULL);
2725
2726 if (h != NULL)
2727 {
2728 bfd_boolean dyn;
2729 bfd_vma off;
2730
2731 off = h->got.offset;
2732 BFD_ASSERT (off != (bfd_vma) -1);
2733
2734 dyn = htab->root.dynamic_sections_created;
2735 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2736 || (info->shared
2737 && (info->symbolic
2738 || h->dynindx == -1
2739 || h->forced_local)
2740 && h->def_regular))
2741 {
2742 /* This is actually a static link, or it is a
2743 -Bsymbolic link and the symbol is defined
2744 locally, or the symbol was forced to be local
2745 because of a version file. We must initialize
2746 this entry in the global offset table. Since the
2747 offset must always be a multiple of 4, we use the
2748 least significant bit to record whether we have
2749 initialized it already.
2750
2751 When doing a dynamic link, we create a .rela.got
2752 relocation entry to initialize the value. This
2753 is done in the finish_dynamic_symbol routine. */
2754 if ((off & 1) != 0)
2755 off &= ~1;
2756 else
2757 {
2758 bfd_put_32 (output_bfd, relocation,
2759 sgot->contents + off);
2760 h->got.offset |= 1;
2761 }
2762 }
2763
2764 relocation = sgot->output_offset + off;
2765 }
2766 else
2767 {
2768 bfd_vma off;
2769 bfd_byte *loc;
2770
2771 BFD_ASSERT (local_got_offsets != NULL
2772 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2773
2774 off = local_got_offsets[r_symndx];
2775
2776 /* The offset must always be a multiple of 4. We use
2777 the least significant bit to record whether we have
2778 already processed this entry. */
2779 if ((off & 1) != 0)
2780 off &= ~1;
2781 else
2782 {
2783 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2784
2785 if (info->shared)
2786 {
2787 asection *srelgot;
2788 Elf_Internal_Rela outrel;
2789
2790 /* We need to generate a R_M32R_RELATIVE reloc
2791 for the dynamic linker. */
2792 srelgot = bfd_get_linker_section (dynobj,
2793 ".rela.got");
2794 BFD_ASSERT (srelgot != NULL);
2795
2796 outrel.r_offset = (sgot->output_section->vma
2797 + sgot->output_offset
2798 + off);
2799 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2800 outrel.r_addend = relocation;
2801 loc = srelgot->contents;
2802 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2803 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2804 ++srelgot->reloc_count;
2805 }
2806
2807 local_got_offsets[r_symndx] |= 1;
2808 }
2809
2810 relocation = sgot->output_offset + off;
2811 }
2812 if ((r_type == R_M32R_GOT16_HI_SLO)
2813 && ((relocation + rel->r_addend) & 0x8000))
2814 rel->r_addend += 0x10000;
2815
2816 break;
2817
2818 case R_M32R_26_PLTREL:
2819 /* Relocation is to the entry for this symbol in the
2820 procedure linkage table. */
2821
2822 /* The native assembler will generate a 26_PLTREL reloc
2823 for a local symbol if you assemble a call from one
2824 section to another when using -K pic. */
2825 if (h == NULL)
2826 break;
2827
2828 if (h->forced_local)
2829 break;
2830
2831 if (h->plt.offset == (bfd_vma) -1)
2832 /* We didn't make a PLT entry for this symbol. This
2833 happens when statically linking PIC code, or when
2834 using -Bsymbolic. */
2835 break;
2836
2837 relocation = (splt->output_section->vma
2838 + splt->output_offset
2839 + h->plt.offset);
2840 break;
2841
2842 case R_M32R_HI16_SLO_RELA:
2843 if ((relocation + rel->r_addend) & 0x8000)
2844 rel->r_addend += 0x10000;
2845 /* Fall through. */
2846
2847 case R_M32R_16_RELA:
2848 case R_M32R_24_RELA:
2849 case R_M32R_32_RELA:
2850 case R_M32R_REL32:
2851 case R_M32R_10_PCREL_RELA:
2852 case R_M32R_18_PCREL_RELA:
2853 case R_M32R_26_PCREL_RELA:
2854 case R_M32R_HI16_ULO_RELA:
2855 case R_M32R_LO16_RELA:
2856 if (info->shared
2857 && r_symndx != STN_UNDEF
2858 && (input_section->flags & SEC_ALLOC) != 0
2859 && (( r_type != R_M32R_10_PCREL_RELA
2860 && r_type != R_M32R_18_PCREL_RELA
2861 && r_type != R_M32R_26_PCREL_RELA
2862 && r_type != R_M32R_REL32)
2863 || (h != NULL
2864 && h->dynindx != -1
2865 && (! info->symbolic
2866 || !h->def_regular))))
2867 {
2868 Elf_Internal_Rela outrel;
2869 bfd_boolean skip, relocate;
2870 bfd_byte *loc;
2871
2872 /* When generating a shared object, these relocations
2873 are copied into the output file to be resolved at run
2874 time. */
2875 if (sreloc == NULL)
2876 {
2877 sreloc = _bfd_elf_get_dynamic_reloc_section
2878 (input_bfd, input_section, /*rela?*/ TRUE);
2879 if (sreloc == NULL)
2880 return FALSE;
2881 }
2882
2883 skip = FALSE;
2884 relocate = FALSE;
2885
2886 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2887 info,
2888 input_section,
2889 rel->r_offset);
2890 if (outrel.r_offset == (bfd_vma) -1)
2891 skip = TRUE;
2892 else if (outrel.r_offset == (bfd_vma) -2)
2893 skip = relocate = TRUE;
2894 outrel.r_offset += (input_section->output_section->vma
2895 + input_section->output_offset);
2896
2897 if (skip)
2898 memset (&outrel, 0, sizeof outrel);
2899 else if ( r_type == R_M32R_10_PCREL_RELA
2900 || r_type == R_M32R_18_PCREL_RELA
2901 || r_type == R_M32R_26_PCREL_RELA
2902 || r_type == R_M32R_REL32)
2903 {
2904 BFD_ASSERT (h != NULL && h->dynindx != -1);
2905 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2906 outrel.r_addend = rel->r_addend;
2907 }
2908 else
2909 {
2910 /* h->dynindx may be -1 if this symbol was marked to
2911 become local. */
2912 if (h == NULL
2913 || ((info->symbolic || h->dynindx == -1)
2914 && h->def_regular))
2915 {
2916 relocate = TRUE;
2917 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2918 outrel.r_addend = relocation + rel->r_addend;
2919 }
2920 else
2921 {
2922 BFD_ASSERT (h->dynindx != -1);
2923 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2924 outrel.r_addend = relocation + rel->r_addend;
2925 }
2926 }
2927
2928 loc = sreloc->contents;
2929 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2930 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2931 ++sreloc->reloc_count;
2932
2933 /* If this reloc is against an external symbol, we do
2934 not want to fiddle with the addend. Otherwise, we
2935 need to include the symbol value so that it becomes
2936 an addend for the dynamic reloc. */
2937 if (! relocate)
2938 continue;
2939 break;
2940 }
2941 else if (r_type != R_M32R_10_PCREL_RELA)
2942 break;
2943 /* Fall through. */
2944
2945 case (int) R_M32R_10_PCREL :
2946 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2947 contents, offset,
2948 sec, relocation, addend);
2949 goto check_reloc;
2950
2951 case (int) R_M32R_HI16_SLO :
2952 case (int) R_M32R_HI16_ULO :
2953 {
2954 Elf_Internal_Rela *lorel;
2955
2956 /* We allow an arbitrary number of HI16 relocs before the
2957 LO16 reloc. This permits gcc to emit the HI and LO relocs
2958 itself. */
2959 for (lorel = rel + 1;
2960 (lorel < relend
2961 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2962 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2963 lorel++)
2964 continue;
2965 if (lorel < relend
2966 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2967 {
2968 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2969 contents, relocation + addend);
2970 r = bfd_reloc_ok;
2971 }
2972 else
2973 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2974 contents, offset,
2975 relocation, addend);
2976 }
2977
2978 goto check_reloc;
2979
2980 case (int) R_M32R_SDA16_RELA:
2981 case (int) R_M32R_SDA16 :
2982 {
2983 const char *name;
2984
2985 BFD_ASSERT (sec != NULL);
2986 name = bfd_get_section_name (sec->owner, sec);
2987
2988 if ( strcmp (name, ".sdata") == 0
2989 || strcmp (name, ".sbss") == 0
2990 || strcmp (name, ".scommon") == 0)
2991 {
2992 bfd_vma sda_base;
2993 bfd *out_bfd = sec->output_section->owner;
2994
2995 r = m32r_elf_final_sda_base (out_bfd, info,
2996 &errmsg,
2997 &sda_base);
2998 if (r != bfd_reloc_ok)
2999 {
3000 ret = FALSE;
3001 goto check_reloc;
3002 }
3003
3004 /* At this point `relocation' contains the object's
3005 address. */
3006 relocation -= sda_base;
3007 /* Now it contains the offset from _SDA_BASE_. */
3008 }
3009 else
3010 {
3011 (*_bfd_error_handler)
3012 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3013 input_bfd,
3014 sec,
3015 sym_name,
3016 m32r_elf_howto_table[(int) r_type].name);
3017 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3018 ret = FALSE;
3019 continue;
3020 }
3021 }
3022 /* Fall through. */
3023
3024 default : /* OLD_M32R_RELOC */
3025
3026 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3027 contents, offset,
3028 relocation, addend);
3029 goto check_reloc;
3030 }
3031
3032 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3033 contents, rel->r_offset,
3034 relocation, rel->r_addend);
3035
3036 }
3037
3038 check_reloc:
3039
3040 if (r != bfd_reloc_ok)
3041 {
3042 /* FIXME: This should be generic enough to go in a utility. */
3043 const char *name;
3044
3045 if (h != NULL)
3046 name = h->root.root.string;
3047 else
3048 {
3049 name = (bfd_elf_string_from_elf_section
3050 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3051 if (name == NULL || *name == '\0')
3052 name = bfd_section_name (input_bfd, sec);
3053 }
3054
3055 if (errmsg != NULL)
3056 goto common_error;
3057
3058 switch (r)
3059 {
3060 case bfd_reloc_overflow:
3061 if (! ((*info->callbacks->reloc_overflow)
3062 (info, (h ? &h->root : NULL), name, howto->name,
3063 (bfd_vma) 0, input_bfd, input_section, offset)))
3064 return FALSE;
3065 break;
3066
3067 case bfd_reloc_undefined:
3068 if (! ((*info->callbacks->undefined_symbol)
3069 (info, name, input_bfd, input_section,
3070 offset, TRUE)))
3071 return FALSE;
3072 break;
3073
3074 case bfd_reloc_outofrange:
3075 errmsg = _("internal error: out of range error");
3076 goto common_error;
3077
3078 case bfd_reloc_notsupported:
3079 errmsg = _("internal error: unsupported relocation error");
3080 goto common_error;
3081
3082 case bfd_reloc_dangerous:
3083 errmsg = _("internal error: dangerous error");
3084 goto common_error;
3085
3086 default:
3087 errmsg = _("internal error: unknown error");
3088 /* fall through */
3089
3090 common_error:
3091 if (!((*info->callbacks->warning)
3092 (info, errmsg, name, input_bfd, input_section,
3093 offset)))
3094 return FALSE;
3095 break;
3096 }
3097 }
3098 }
3099
3100 return ret;
3101 }
3102
3103 /* Finish up dynamic symbol handling. We set the contents of various
3104 dynamic sections here. */
3105
3106 static bfd_boolean
3107 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3108 struct bfd_link_info *info,
3109 struct elf_link_hash_entry *h,
3110 Elf_Internal_Sym *sym)
3111 {
3112 struct elf_m32r_link_hash_table *htab;
3113 bfd_byte *loc;
3114
3115 #ifdef DEBUG_PIC
3116 printf ("m32r_elf_finish_dynamic_symbol()\n");
3117 #endif
3118
3119 htab = m32r_elf_hash_table (info);
3120 if (htab == NULL)
3121 return FALSE;
3122
3123 if (h->plt.offset != (bfd_vma) -1)
3124 {
3125 asection *splt;
3126 asection *sgot;
3127 asection *srela;
3128
3129 bfd_vma plt_index;
3130 bfd_vma got_offset;
3131 Elf_Internal_Rela rela;
3132
3133 /* This symbol has an entry in the procedure linkage table. Set
3134 it up. */
3135
3136 BFD_ASSERT (h->dynindx != -1);
3137
3138 splt = htab->splt;
3139 sgot = htab->sgotplt;
3140 srela = htab->srelplt;
3141 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3142
3143 /* Get the index in the procedure linkage table which
3144 corresponds to this symbol. This is the index of this symbol
3145 in all the symbols for which we are making plt entries. The
3146 first entry in the procedure linkage table is reserved. */
3147 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3148
3149 /* Get the offset into the .got table of the entry that
3150 corresponds to this function. Each .got entry is 4 bytes.
3151 The first three are reserved. */
3152 got_offset = (plt_index + 3) * 4;
3153
3154 /* Fill in the entry in the procedure linkage table. */
3155 if (! info->shared)
3156 {
3157 bfd_put_32 (output_bfd,
3158 (PLT_ENTRY_WORD0b
3159 + (((sgot->output_section->vma
3160 + sgot->output_offset
3161 + got_offset) >> 16) & 0xffff)),
3162 splt->contents + h->plt.offset);
3163 bfd_put_32 (output_bfd,
3164 (PLT_ENTRY_WORD1b
3165 + ((sgot->output_section->vma
3166 + sgot->output_offset
3167 + got_offset) & 0xffff)),
3168 splt->contents + h->plt.offset + 4);
3169 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3170 splt->contents + h->plt.offset + 8);
3171 bfd_put_32 (output_bfd,
3172 (PLT_ENTRY_WORD3
3173 + plt_index * sizeof (Elf32_External_Rela)),
3174 splt->contents + h->plt.offset + 12);
3175 bfd_put_32 (output_bfd,
3176 (PLT_ENTRY_WORD4
3177 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3178 splt->contents + h->plt.offset + 16);
3179 }
3180 else
3181 {
3182 bfd_put_32 (output_bfd,
3183 PLT_ENTRY_WORD0 + got_offset,
3184 splt->contents + h->plt.offset);
3185 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3186 splt->contents + h->plt.offset + 4);
3187 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3188 splt->contents + h->plt.offset + 8);
3189 bfd_put_32 (output_bfd,
3190 (PLT_ENTRY_WORD3
3191 + plt_index * sizeof (Elf32_External_Rela)),
3192 splt->contents + h->plt.offset + 12);
3193 bfd_put_32 (output_bfd,
3194 (PLT_ENTRY_WORD4
3195 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3196 splt->contents + h->plt.offset + 16);
3197 }
3198
3199 /* Fill in the entry in the global offset table. */
3200 bfd_put_32 (output_bfd,
3201 (splt->output_section->vma
3202 + splt->output_offset
3203 + h->plt.offset
3204 + 12), /* same offset */
3205 sgot->contents + got_offset);
3206
3207 /* Fill in the entry in the .rela.plt section. */
3208 rela.r_offset = (sgot->output_section->vma
3209 + sgot->output_offset
3210 + got_offset);
3211 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3212 rela.r_addend = 0;
3213 loc = srela->contents;
3214 loc += plt_index * sizeof (Elf32_External_Rela);
3215 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3216
3217 if (!h->def_regular)
3218 {
3219 /* Mark the symbol as undefined, rather than as defined in
3220 the .plt section. Leave the value alone. */
3221 sym->st_shndx = SHN_UNDEF;
3222 }
3223 }
3224
3225 if (h->got.offset != (bfd_vma) -1)
3226 {
3227 asection *sgot;
3228 asection *srela;
3229 Elf_Internal_Rela rela;
3230
3231 /* This symbol has an entry in the global offset table. Set it
3232 up. */
3233
3234 sgot = htab->sgot;
3235 srela = htab->srelgot;
3236 BFD_ASSERT (sgot != NULL && srela != NULL);
3237
3238 rela.r_offset = (sgot->output_section->vma
3239 + sgot->output_offset
3240 + (h->got.offset &~ 1));
3241
3242 /* If this is a -Bsymbolic link, and the symbol is defined
3243 locally, we just want to emit a RELATIVE reloc. Likewise if
3244 the symbol was forced to be local because of a version file.
3245 The entry in the global offset table will already have been
3246 initialized in the relocate_section function. */
3247 if (info->shared
3248 && (info->symbolic
3249 || h->dynindx == -1
3250 || h->forced_local)
3251 && h->def_regular)
3252 {
3253 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3254 rela.r_addend = (h->root.u.def.value
3255 + h->root.u.def.section->output_section->vma
3256 + h->root.u.def.section->output_offset);
3257 }
3258 else
3259 {
3260 BFD_ASSERT ((h->got.offset & 1) == 0);
3261 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3262 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3263 rela.r_addend = 0;
3264 }
3265
3266 loc = srela->contents;
3267 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3268 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3269 ++srela->reloc_count;
3270 }
3271
3272 if (h->needs_copy)
3273 {
3274 asection *s;
3275 Elf_Internal_Rela rela;
3276
3277 /* This symbols needs a copy reloc. Set it up. */
3278
3279 BFD_ASSERT (h->dynindx != -1
3280 && (h->root.type == bfd_link_hash_defined
3281 || h->root.type == bfd_link_hash_defweak));
3282
3283 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
3284 BFD_ASSERT (s != NULL);
3285
3286 rela.r_offset = (h->root.u.def.value
3287 + h->root.u.def.section->output_section->vma
3288 + h->root.u.def.section->output_offset);
3289 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3290 rela.r_addend = 0;
3291 loc = s->contents;
3292 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3293 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3294 ++s->reloc_count;
3295 }
3296
3297 /* Mark some specially defined symbols as absolute. */
3298 if (h == htab->root.hdynamic || h == htab->root.hgot)
3299 sym->st_shndx = SHN_ABS;
3300
3301 return TRUE;
3302 }
3303
3304
3305 /* Finish up the dynamic sections. */
3306
3307 static bfd_boolean
3308 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3309 struct bfd_link_info *info)
3310 {
3311 struct elf_m32r_link_hash_table *htab;
3312 bfd *dynobj;
3313 asection *sdyn;
3314 asection *sgot;
3315
3316 #ifdef DEBUG_PIC
3317 printf ("m32r_elf_finish_dynamic_sections()\n");
3318 #endif
3319
3320 htab = m32r_elf_hash_table (info);
3321 if (htab == NULL)
3322 return FALSE;
3323
3324 dynobj = htab->root.dynobj;
3325
3326 sgot = htab->sgotplt;
3327 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3328
3329 if (htab->root.dynamic_sections_created)
3330 {
3331 asection *splt;
3332 Elf32_External_Dyn *dyncon, *dynconend;
3333
3334 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3335
3336 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3337 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3338
3339 for (; dyncon < dynconend; dyncon++)
3340 {
3341 Elf_Internal_Dyn dyn;
3342 asection *s;
3343
3344 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3345
3346 switch (dyn.d_tag)
3347 {
3348 default:
3349 break;
3350
3351 case DT_PLTGOT:
3352 s = htab->sgot->output_section;
3353 goto get_vma;
3354 case DT_JMPREL:
3355 s = htab->srelplt->output_section;
3356 get_vma:
3357 BFD_ASSERT (s != NULL);
3358 dyn.d_un.d_ptr = s->vma;
3359 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3360 break;
3361
3362 case DT_PLTRELSZ:
3363 s = htab->srelplt->output_section;
3364 BFD_ASSERT (s != NULL);
3365 dyn.d_un.d_val = s->size;
3366 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3367 break;
3368
3369 case DT_RELASZ:
3370 /* My reading of the SVR4 ABI indicates that the
3371 procedure linkage table relocs (DT_JMPREL) should be
3372 included in the overall relocs (DT_RELA). This is
3373 what Solaris does. However, UnixWare can not handle
3374 that case. Therefore, we override the DT_RELASZ entry
3375 here to make it not include the JMPREL relocs. Since
3376 the linker script arranges for .rela.plt to follow all
3377 other relocation sections, we don't have to worry
3378 about changing the DT_RELA entry. */
3379 if (htab->srelplt != NULL)
3380 {
3381 s = htab->srelplt->output_section;
3382 dyn.d_un.d_val -= s->size;
3383 }
3384 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3385 break;
3386 }
3387 }
3388
3389 /* Fill in the first entry in the procedure linkage table. */
3390 splt = htab->splt;
3391 if (splt && splt->size > 0)
3392 {
3393 if (info->shared)
3394 {
3395 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3396 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3397 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3398 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3399 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3400 }
3401 else
3402 {
3403 unsigned long addr;
3404 /* addr = .got + 4 */
3405 addr = sgot->output_section->vma + sgot->output_offset + 4;
3406 bfd_put_32 (output_bfd,
3407 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3408 splt->contents);
3409 bfd_put_32 (output_bfd,
3410 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3411 splt->contents + 4);
3412 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3413 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3414 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3415 }
3416
3417 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3418 PLT_ENTRY_SIZE;
3419 }
3420 }
3421
3422 /* Fill in the first three entries in the global offset table. */
3423 if (sgot && sgot->size > 0)
3424 {
3425 if (sdyn == NULL)
3426 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3427 else
3428 bfd_put_32 (output_bfd,
3429 sdyn->output_section->vma + sdyn->output_offset,
3430 sgot->contents);
3431 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3432 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3433
3434 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3435 }
3436
3437 return TRUE;
3438 }
3439
3440 \f
3441 /* Set the right machine number. */
3442
3443 static bfd_boolean
3444 m32r_elf_object_p (bfd *abfd)
3445 {
3446 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3447 {
3448 default:
3449 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3450 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3451 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3452 }
3453 return TRUE;
3454 }
3455
3456 /* Store the machine number in the flags field. */
3457
3458 static void
3459 m32r_elf_final_write_processing (bfd *abfd,
3460 bfd_boolean linker ATTRIBUTE_UNUSED)
3461 {
3462 unsigned long val;
3463
3464 switch (bfd_get_mach (abfd))
3465 {
3466 default:
3467 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3468 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3469 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3470 }
3471
3472 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3473 elf_elfheader (abfd)->e_flags |= val;
3474 }
3475
3476 /* Function to keep M32R specific file flags. */
3477
3478 static bfd_boolean
3479 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3480 {
3481 BFD_ASSERT (!elf_flags_init (abfd)
3482 || elf_elfheader (abfd)->e_flags == flags);
3483
3484 elf_elfheader (abfd)->e_flags = flags;
3485 elf_flags_init (abfd) = TRUE;
3486 return TRUE;
3487 }
3488
3489 /* Merge backend specific data from an object file to the output
3490 object file when linking. */
3491
3492 static bfd_boolean
3493 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3494 {
3495 flagword out_flags;
3496 flagword in_flags;
3497
3498 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3499 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3500 return TRUE;
3501
3502 in_flags = elf_elfheader (ibfd)->e_flags;
3503 out_flags = elf_elfheader (obfd)->e_flags;
3504
3505 if (! elf_flags_init (obfd))
3506 {
3507 /* If the input is the default architecture then do not
3508 bother setting the flags for the output architecture,
3509 instead allow future merges to do this. If no future
3510 merges ever set these flags then they will retain their
3511 unitialised values, which surprise surprise, correspond
3512 to the default values. */
3513 if (bfd_get_arch_info (ibfd)->the_default)
3514 return TRUE;
3515
3516 elf_flags_init (obfd) = TRUE;
3517 elf_elfheader (obfd)->e_flags = in_flags;
3518
3519 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3520 && bfd_get_arch_info (obfd)->the_default)
3521 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3522 bfd_get_mach (ibfd));
3523
3524 return TRUE;
3525 }
3526
3527 /* Check flag compatibility. */
3528 if (in_flags == out_flags)
3529 return TRUE;
3530
3531 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3532 {
3533 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3534 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3535 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3536 {
3537 (*_bfd_error_handler)
3538 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3539
3540 bfd_set_error (bfd_error_bad_value);
3541 return FALSE;
3542 }
3543 }
3544
3545 return TRUE;
3546 }
3547
3548 /* Display the flags field. */
3549
3550 static bfd_boolean
3551 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3552 {
3553 FILE * file = (FILE *) ptr;
3554
3555 BFD_ASSERT (abfd != NULL && ptr != NULL);
3556
3557 _bfd_elf_print_private_bfd_data (abfd, ptr);
3558
3559 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3560
3561 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3562 {
3563 default:
3564 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3565 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3566 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3567 }
3568
3569 fputc ('\n', file);
3570
3571 return TRUE;
3572 }
3573
3574 static asection *
3575 m32r_elf_gc_mark_hook (asection *sec,
3576 struct bfd_link_info *info,
3577 Elf_Internal_Rela *rel,
3578 struct elf_link_hash_entry *h,
3579 Elf_Internal_Sym *sym)
3580 {
3581 if (h != NULL)
3582 switch (ELF32_R_TYPE (rel->r_info))
3583 {
3584 case R_M32R_GNU_VTINHERIT:
3585 case R_M32R_GNU_VTENTRY:
3586 case R_M32R_RELA_GNU_VTINHERIT:
3587 case R_M32R_RELA_GNU_VTENTRY:
3588 return NULL;
3589 }
3590
3591 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3592 }
3593
3594 static bfd_boolean
3595 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3596 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3597 asection *sec ATTRIBUTE_UNUSED,
3598 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3599 {
3600 /* Update the got entry reference counts for the section being removed. */
3601 Elf_Internal_Shdr *symtab_hdr;
3602 struct elf_link_hash_entry **sym_hashes;
3603 bfd_signed_vma *local_got_refcounts;
3604 const Elf_Internal_Rela *rel, *relend;
3605
3606 if (info->relocatable)
3607 return TRUE;
3608
3609 elf_section_data (sec)->local_dynrel = NULL;
3610
3611 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3612 sym_hashes = elf_sym_hashes (abfd);
3613 local_got_refcounts = elf_local_got_refcounts (abfd);
3614
3615 relend = relocs + sec->reloc_count;
3616 for (rel = relocs; rel < relend; rel++)
3617 {
3618 unsigned long r_symndx;
3619 struct elf_link_hash_entry *h = NULL;
3620
3621 r_symndx = ELF32_R_SYM (rel->r_info);
3622 if (r_symndx >= symtab_hdr->sh_info)
3623 {
3624 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3625 while (h->root.type == bfd_link_hash_indirect
3626 || h->root.type == bfd_link_hash_warning)
3627 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3628 }
3629
3630 switch (ELF32_R_TYPE (rel->r_info))
3631 {
3632 case R_M32R_GOT16_HI_ULO:
3633 case R_M32R_GOT16_HI_SLO:
3634 case R_M32R_GOT16_LO:
3635 case R_M32R_GOTOFF:
3636 case R_M32R_GOTOFF_HI_ULO:
3637 case R_M32R_GOTOFF_HI_SLO:
3638 case R_M32R_GOTOFF_LO:
3639 case R_M32R_GOT24:
3640 case R_M32R_GOTPC_HI_ULO:
3641 case R_M32R_GOTPC_HI_SLO:
3642 case R_M32R_GOTPC_LO:
3643 case R_M32R_GOTPC24:
3644 if (h != NULL)
3645 {
3646 if (h->got.refcount > 0)
3647 h->got.refcount--;
3648 }
3649 else
3650 {
3651 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3652 local_got_refcounts[r_symndx]--;
3653 }
3654 break;
3655
3656 case R_M32R_16_RELA:
3657 case R_M32R_24_RELA:
3658 case R_M32R_32_RELA:
3659 case R_M32R_REL32:
3660 case R_M32R_HI16_ULO_RELA:
3661 case R_M32R_HI16_SLO_RELA:
3662 case R_M32R_LO16_RELA:
3663 case R_M32R_SDA16_RELA:
3664 case R_M32R_10_PCREL_RELA:
3665 case R_M32R_18_PCREL_RELA:
3666 case R_M32R_26_PCREL_RELA:
3667 if (h != NULL)
3668 {
3669 struct elf_m32r_link_hash_entry *eh;
3670 struct elf_m32r_dyn_relocs **pp;
3671 struct elf_m32r_dyn_relocs *p;
3672
3673 if (!info->shared && h->plt.refcount > 0)
3674 h->plt.refcount -= 1;
3675
3676 eh = (struct elf_m32r_link_hash_entry *) h;
3677
3678 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3679 if (p->sec == sec)
3680 {
3681 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3682 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3683 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3684 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3685 p->pc_count -= 1;
3686 p->count -= 1;
3687 if (p->count == 0)
3688 *pp = p->next;
3689 break;
3690 }
3691 }
3692 break;
3693
3694 case R_M32R_26_PLTREL:
3695 if (h != NULL)
3696 {
3697 if (h->plt.refcount > 0)
3698 h->plt.refcount--;
3699 }
3700 break;
3701
3702 default:
3703 break;
3704 }
3705 }
3706
3707 return TRUE;
3708 }
3709
3710 /* Look through the relocs for a section during the first phase.
3711 Since we don't do .gots or .plts, we just need to consider the
3712 virtual table relocs for gc. */
3713
3714 static bfd_boolean
3715 m32r_elf_check_relocs (bfd *abfd,
3716 struct bfd_link_info *info,
3717 asection *sec,
3718 const Elf_Internal_Rela *relocs)
3719 {
3720 Elf_Internal_Shdr *symtab_hdr;
3721 struct elf_link_hash_entry **sym_hashes;
3722 const Elf_Internal_Rela *rel;
3723 const Elf_Internal_Rela *rel_end;
3724 struct elf_m32r_link_hash_table *htab;
3725 bfd *dynobj;
3726 asection *sreloc;
3727
3728 if (info->relocatable)
3729 return TRUE;
3730
3731 sreloc = NULL;
3732 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3733 sym_hashes = elf_sym_hashes (abfd);
3734
3735 htab = m32r_elf_hash_table (info);
3736 if (htab == NULL)
3737 return FALSE;
3738
3739 dynobj = htab->root.dynobj;
3740
3741 rel_end = relocs + sec->reloc_count;
3742 for (rel = relocs; rel < rel_end; rel++)
3743 {
3744 int r_type;
3745 struct elf_link_hash_entry *h;
3746 unsigned long r_symndx;
3747
3748 r_symndx = ELF32_R_SYM (rel->r_info);
3749 r_type = ELF32_R_TYPE (rel->r_info);
3750 if (r_symndx < symtab_hdr->sh_info)
3751 h = NULL;
3752 else
3753 {
3754 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3755 while (h->root.type == bfd_link_hash_indirect
3756 || h->root.type == bfd_link_hash_warning)
3757 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3758 }
3759
3760 /* Some relocs require a global offset table. */
3761 if (htab->sgot == NULL)
3762 {
3763 switch (r_type)
3764 {
3765 case R_M32R_GOT16_HI_ULO:
3766 case R_M32R_GOT16_HI_SLO:
3767 case R_M32R_GOTOFF:
3768 case R_M32R_GOTOFF_HI_ULO:
3769 case R_M32R_GOTOFF_HI_SLO:
3770 case R_M32R_GOTOFF_LO:
3771 case R_M32R_GOT16_LO:
3772 case R_M32R_GOTPC24:
3773 case R_M32R_GOTPC_HI_ULO:
3774 case R_M32R_GOTPC_HI_SLO:
3775 case R_M32R_GOTPC_LO:
3776 case R_M32R_GOT24:
3777 if (dynobj == NULL)
3778 htab->root.dynobj = dynobj = abfd;
3779 if (! create_got_section (dynobj, info))
3780 return FALSE;
3781 break;
3782
3783 default:
3784 break;
3785 }
3786 }
3787
3788 switch (r_type)
3789 {
3790 case R_M32R_GOT16_HI_ULO:
3791 case R_M32R_GOT16_HI_SLO:
3792 case R_M32R_GOT16_LO:
3793 case R_M32R_GOT24:
3794
3795 if (h != NULL)
3796 h->got.refcount += 1;
3797 else
3798 {
3799 bfd_signed_vma *local_got_refcounts;
3800
3801 /* This is a global offset table entry for a local
3802 symbol. */
3803 local_got_refcounts = elf_local_got_refcounts (abfd);
3804 if (local_got_refcounts == NULL)
3805 {
3806 bfd_size_type size;
3807
3808 size = symtab_hdr->sh_info;
3809 size *= sizeof (bfd_signed_vma);
3810 local_got_refcounts = bfd_zalloc (abfd, size);
3811 if (local_got_refcounts == NULL)
3812 return FALSE;
3813 elf_local_got_refcounts (abfd) = local_got_refcounts;
3814 }
3815 local_got_refcounts[r_symndx] += 1;
3816 }
3817 break;
3818
3819 case R_M32R_26_PLTREL:
3820 /* This symbol requires a procedure linkage table entry. We
3821 actually build the entry in adjust_dynamic_symbol,
3822 because this might be a case of linking PIC code without
3823 linking in any dynamic objects, in which case we don't
3824 need to generate a procedure linkage table after all. */
3825
3826 /* If this is a local symbol, we resolve it directly without
3827 creating a procedure linkage table entry. */
3828 if (h == NULL)
3829 continue;
3830
3831 if (h->forced_local)
3832 break;
3833
3834 h->needs_plt = 1;
3835 h->plt.refcount += 1;
3836 break;
3837
3838 case R_M32R_16_RELA:
3839 case R_M32R_24_RELA:
3840 case R_M32R_32_RELA:
3841 case R_M32R_REL32:
3842 case R_M32R_HI16_ULO_RELA:
3843 case R_M32R_HI16_SLO_RELA:
3844 case R_M32R_LO16_RELA:
3845 case R_M32R_SDA16_RELA:
3846 case R_M32R_10_PCREL_RELA:
3847 case R_M32R_18_PCREL_RELA:
3848 case R_M32R_26_PCREL_RELA:
3849
3850 if (h != NULL && !info->shared)
3851 {
3852 h->non_got_ref = 1;
3853 h->plt.refcount += 1;
3854 }
3855
3856 /* If we are creating a shared library, and this is a reloc
3857 against a global symbol, or a non PC relative reloc
3858 against a local symbol, then we need to copy the reloc
3859 into the shared library. However, if we are linking with
3860 -Bsymbolic, we do not need to copy a reloc against a
3861 global symbol which is defined in an object we are
3862 including in the link (i.e., DEF_REGULAR is set). At
3863 this point we have not seen all the input files, so it is
3864 possible that DEF_REGULAR is not set now but will be set
3865 later (it is never cleared). We account for that
3866 possibility below by storing information in the
3867 dyn_relocs field of the hash table entry. A similar
3868 situation occurs when creating shared libraries and symbol
3869 visibility changes render the symbol local.
3870
3871 If on the other hand, we are creating an executable, we
3872 may need to keep relocations for symbols satisfied by a
3873 dynamic library if we manage to avoid copy relocs for the
3874 symbol. */
3875 if ((info->shared
3876 && (sec->flags & SEC_ALLOC) != 0
3877 && (( r_type != R_M32R_26_PCREL_RELA
3878 && r_type != R_M32R_18_PCREL_RELA
3879 && r_type != R_M32R_10_PCREL_RELA
3880 && r_type != R_M32R_REL32)
3881 || (h != NULL
3882 && (! info->symbolic
3883 || h->root.type == bfd_link_hash_defweak
3884 || !h->def_regular))))
3885 || (!info->shared
3886 && (sec->flags & SEC_ALLOC) != 0
3887 && h != NULL
3888 && (h->root.type == bfd_link_hash_defweak
3889 || !h->def_regular)))
3890 {
3891 struct elf_m32r_dyn_relocs *p;
3892 struct elf_m32r_dyn_relocs **head;
3893
3894 if (dynobj == NULL)
3895 htab->root.dynobj = dynobj = abfd;
3896
3897 /* When creating a shared object, we must copy these
3898 relocs into the output file. We create a reloc
3899 section in dynobj and make room for the reloc. */
3900 if (sreloc == NULL)
3901 {
3902 sreloc = _bfd_elf_make_dynamic_reloc_section
3903 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3904
3905 if (sreloc == NULL)
3906 return FALSE;
3907 }
3908
3909 /* If this is a global symbol, we count the number of
3910 relocations we need for this symbol. */
3911 if (h != NULL)
3912 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3913 else
3914 {
3915 /* Track dynamic relocs needed for local syms too. */
3916 asection *s;
3917 void *vpp;
3918 Elf_Internal_Sym *isym;
3919
3920 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3921 abfd, r_symndx);
3922 if (isym == NULL)
3923 return FALSE;
3924
3925 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3926 if (s == NULL)
3927 s = sec;
3928
3929 vpp = &elf_section_data (s)->local_dynrel;
3930 head = (struct elf_m32r_dyn_relocs **) vpp;
3931 }
3932
3933 p = *head;
3934 if (p == NULL || p->sec != sec)
3935 {
3936 bfd_size_type amt = sizeof (*p);
3937
3938 p = bfd_alloc (dynobj, amt);
3939 if (p == NULL)
3940 return FALSE;
3941 p->next = *head;
3942 *head = p;
3943 p->sec = sec;
3944 p->count = 0;
3945 p->pc_count = 0;
3946 }
3947
3948 p->count += 1;
3949 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3950 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3951 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3952 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3953 p->pc_count += 1;
3954 }
3955 break;
3956
3957 /* This relocation describes the C++ object vtable hierarchy.
3958 Reconstruct it for later use during GC. */
3959 case R_M32R_RELA_GNU_VTINHERIT:
3960 case R_M32R_GNU_VTINHERIT:
3961 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3962 return FALSE;
3963 break;
3964
3965 /* This relocation describes which C++ vtable entries are actually
3966 used. Record for later use during GC. */
3967 case R_M32R_GNU_VTENTRY:
3968 BFD_ASSERT (h != NULL);
3969 if (h != NULL
3970 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
3971 return FALSE;
3972 break;
3973 case R_M32R_RELA_GNU_VTENTRY:
3974 BFD_ASSERT (h != NULL);
3975 if (h != NULL
3976 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3977 return FALSE;
3978 break;
3979 }
3980 }
3981
3982 return TRUE;
3983 }
3984
3985 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
3986 {
3987 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3988 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3989 { NULL, 0, 0, 0, 0 }
3990 };
3991
3992 static enum elf_reloc_type_class
3993 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
3994 {
3995 switch ((int) ELF32_R_TYPE (rela->r_info))
3996 {
3997 case R_M32R_RELATIVE: return reloc_class_relative;
3998 case R_M32R_JMP_SLOT: return reloc_class_plt;
3999 case R_M32R_COPY: return reloc_class_copy;
4000 default: return reloc_class_normal;
4001 }
4002 }
4003 \f
4004 #define ELF_ARCH bfd_arch_m32r
4005 #define ELF_TARGET_ID M32R_ELF_DATA
4006 #define ELF_MACHINE_CODE EM_M32R
4007 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4008 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4009
4010 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4011 #define TARGET_BIG_NAME "elf32-m32r"
4012 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4013 #define TARGET_LITTLE_NAME "elf32-m32rle"
4014
4015 #define elf_info_to_howto m32r_info_to_howto
4016 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4017 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4018 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4019 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4020 #define elf_backend_relocate_section m32r_elf_relocate_section
4021 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4022 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4023 #define elf_backend_check_relocs m32r_elf_check_relocs
4024
4025 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4026 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4027 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4028 #define elf_backend_omit_section_dynsym \
4029 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4030 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4031 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4032 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4033 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4034 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4035
4036 #define elf_backend_can_gc_sections 1
4037 /*#if !USE_REL
4038 #define elf_backend_rela_normal 1
4039 #endif*/
4040 #define elf_backend_can_refcount 1
4041 #define elf_backend_want_got_plt 1
4042 #define elf_backend_plt_readonly 1
4043 #define elf_backend_want_plt_sym 0
4044 #define elf_backend_got_header_size 12
4045
4046 #define elf_backend_may_use_rel_p 1
4047 #ifdef USE_M32R_OLD_RELOC
4048 #define elf_backend_default_use_rela_p 0
4049 #define elf_backend_may_use_rela_p 0
4050 #else
4051 #define elf_backend_default_use_rela_p 1
4052 #define elf_backend_may_use_rela_p 1
4053 #endif
4054
4055 #define elf_backend_object_p m32r_elf_object_p
4056 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4057 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4058 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4059 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4060 #define elf_backend_special_sections m32r_elf_special_sections
4061
4062 #include "elf32-target.h"
4063
4064 #undef ELF_MAXPAGESIZE
4065 #define ELF_MAXPAGESIZE 0x1000
4066
4067 #undef TARGET_BIG_SYM
4068 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4069 #undef TARGET_BIG_NAME
4070 #define TARGET_BIG_NAME "elf32-m32r-linux"
4071 #undef TARGET_LITTLE_SYM
4072 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4073 #undef TARGET_LITTLE_NAME
4074 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4075 #undef elf32_bed
4076 #define elf32_bed elf32_m32r_lin_bed
4077
4078 #include "elf32-target.h"
4079
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