Set dynamic tag VMA and size from dynamic section when possible
[deliverable/binutils-gdb.git] / bfd / elf32-m32r.c
1 /* M32R-specific support for 32-bit ELF.
2 Copyright (C) 1996-2016 Free Software Foundation, Inc.
3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/m32r.h"
26
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
29
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
33 to work with. */
34 /* #define USE_REL 1
35
36 #ifndef USE_REL
37 #define USE_REL 0
38 #endif */
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
40
41 /* Functions for the M32R ELF linker. */
42
43 /* The name of the dynamic interpreter. This is put in the .interp
44 section. */
45
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
47
48 /* The nop opcode we use. */
49
50 #define M32R_NOP 0x7000f000
51
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
53
54 /* The size in bytes of an entry in the procedure linkage table. */
55
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
58
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
62
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
68
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
74
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
82
83
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
85
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 reloc_howto_type *howto,
89 asection *input_section,
90 bfd_byte *data,
91 bfd_vma offset,
92 asection *symbol_section ATTRIBUTE_UNUSED,
93 bfd_vma symbol_value,
94 bfd_vma addend)
95 {
96 bfd_signed_vma relocation;
97 unsigned long x;
98 bfd_reloc_status_type status;
99
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
103
104 relocation = symbol_value + addend;
105 /* Make it pc relative. */
106 relocation -= (input_section->output_section->vma
107 + input_section->output_offset);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation -= (offset & -(bfd_vma) 4);
111
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
114 else
115 status = bfd_reloc_ok;
116
117 x = bfd_get_16 (abfd, data + offset);
118 relocation >>= howto->rightshift;
119 relocation <<= howto->bitpos;
120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
122
123 return status;
124 }
125
126 /* Handle the R_M32R_10_PCREL reloc. */
127
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd * abfd,
130 arelent * reloc_entry,
131 asymbol * symbol,
132 void * data,
133 asection * input_section,
134 bfd * output_bfd,
135 char ** error_message ATTRIBUTE_UNUSED)
136 {
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd != NULL
139 && (symbol->flags & BSF_SECTION_SYM) == 0
140 && (! reloc_entry->howto->partial_inplace
141 || reloc_entry->addend == 0))
142 {
143 reloc_entry->address += input_section->output_offset;
144 return bfd_reloc_ok;
145 }
146
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
150
151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
152 input_section,
153 data, reloc_entry->address,
154 symbol->section,
155 (symbol->value
156 + symbol->section->output_section->vma
157 + symbol->section->output_offset),
158 reloc_entry->addend);
159 }
160
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
163
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd *input_bfd,
166 arelent *reloc_entry,
167 asymbol *symbol,
168 void * data,
169 asection *input_section,
170 bfd *output_bfd,
171 char **error_message ATTRIBUTE_UNUSED)
172 {
173 bfd_reloc_status_type ret;
174 bfd_vma relocation;
175 bfd_byte *inplace_address;
176
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd != NULL
181 && (symbol->flags & BSF_SECTION_SYM) == 0
182 && reloc_entry->addend == 0)
183 {
184 reloc_entry->address += input_section->output_offset;
185 return bfd_reloc_ok;
186 }
187
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
193
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196 return bfd_reloc_outofrange;
197
198 ret = bfd_reloc_ok;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
202
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
205 relocation = 0;
206 else
207 relocation = symbol->value;
208
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
211 {
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
214 }
215
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
218
219 #define DOIT(x) \
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
223
224 switch (reloc_entry->howto->size)
225 {
226 case 1:
227 {
228 short x = bfd_get_16 (input_bfd, inplace_address);
229 DOIT (x);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
231 }
232 break;
233 case 2:
234 {
235 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
236 DOIT (x);
237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
238 }
239 break;
240 default:
241 BFD_ASSERT (0);
242 }
243
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
246
247 return ret;
248 }
249
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
255
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 arelent *reloc_entry,
259 asymbol *symbol,
260 void * data ATTRIBUTE_UNUSED,
261 asection *input_section,
262 bfd *output_bfd,
263 char **error_message ATTRIBUTE_UNUSED)
264 {
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd != NULL
267 && (symbol->flags & BSF_SECTION_SYM) == 0
268 && (! reloc_entry->howto->partial_inplace
269 || reloc_entry->addend == 0))
270 {
271 reloc_entry->address += input_section->output_offset;
272 return bfd_reloc_ok;
273 }
274
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
278
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
281 abort ();
282 }
283
284 \f
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
300
301 struct m32r_hi16
302 {
303 struct m32r_hi16 *next;
304 bfd_byte *addr;
305 bfd_vma addend;
306 };
307
308 /* FIXME: This should not be a static variable. */
309
310 static struct m32r_hi16 *m32r_hi16_list;
311
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 arelent *reloc_entry,
315 asymbol *symbol,
316 void * data,
317 asection *input_section,
318 bfd *output_bfd,
319 char **error_message ATTRIBUTE_UNUSED)
320 {
321 bfd_reloc_status_type ret;
322 bfd_vma relocation;
323 struct m32r_hi16 *n;
324
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd != NULL
329 && (symbol->flags & BSF_SECTION_SYM) == 0
330 && reloc_entry->addend == 0)
331 {
332 reloc_entry->address += input_section->output_offset;
333 return bfd_reloc_ok;
334 }
335
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
338 return bfd_reloc_outofrange;
339
340 ret = bfd_reloc_ok;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
344
345 if (bfd_is_com_section (symbol->section))
346 relocation = 0;
347 else
348 relocation = symbol->value;
349
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
353
354 /* Save the information, and let LO16 do the actual relocation. */
355 n = bfd_malloc ((bfd_size_type) sizeof *n);
356 if (n == NULL)
357 return bfd_reloc_outofrange;
358 n->addr = (bfd_byte *) data + reloc_entry->address;
359 n->addend = relocation;
360 n->next = m32r_hi16_list;
361 m32r_hi16_list = n;
362
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
365
366 return ret;
367 }
368
369 /* Handle an M32R ELF HI16 reloc. */
370
371 static void
372 m32r_elf_relocate_hi16 (bfd *input_bfd,
373 int type,
374 Elf_Internal_Rela *relhi,
375 Elf_Internal_Rela *rello,
376 bfd_byte *contents,
377 bfd_vma addend)
378 {
379 unsigned long insn;
380 bfd_vma addlo;
381
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
383
384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385 if (type == R_M32R_HI16_SLO)
386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
387 else
388 addlo &= 0xffff;
389
390 addend += ((insn & 0xffff) << 16) + addlo;
391
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
395 addend += 0x10000;
396
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
400 }
401
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
405
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd *input_bfd,
408 arelent *reloc_entry,
409 asymbol *symbol,
410 void * data,
411 asection *input_section,
412 bfd *output_bfd,
413 char **error_message)
414 {
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd != NULL
419 && (symbol->flags & BSF_SECTION_SYM) == 0
420 && reloc_entry->addend == 0)
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425
426 if (m32r_hi16_list != NULL)
427 {
428 struct m32r_hi16 *l;
429
430 l = m32r_hi16_list;
431 while (l != NULL)
432 {
433 unsigned long insn;
434 unsigned long val;
435 unsigned long vallo;
436 struct m32r_hi16 *next;
437
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn = bfd_get_32 (input_bfd, l->addr);
442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val = ((insn & 0xffff) << 16) + vallo;
445 val += l->addend;
446
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
449 val += 0x10000;
450
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
453
454 next = l->next;
455 free (l);
456 l = next;
457 }
458
459 m32r_hi16_list = NULL;
460 }
461
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 input_section, output_bfd, error_message);
469 }
470
471 \f
472 static reloc_howto_type m32r_elf_howto_table[] =
473 {
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
476 0, /* rightshift */
477 3, /* size (0 = byte, 1 = short, 2 = long) */
478 0, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_dont, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
491 0, /* rightshift */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
503
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 24, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
533
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
537 slot for pc. */
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
541 again. */
542 HOWTO (R_M32R_10_PCREL, /* type */
543 2, /* rightshift */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
545 10, /* bitsize */
546 TRUE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_signed, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE, /* partial_inplace */
552 0xff, /* src_mask */
553 0xff, /* dst_mask */
554 TRUE), /* pcrel_offset */
555
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
575 again. */
576 HOWTO (R_M32R_26_PCREL, /* type */
577 2, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 26, /* bitsize */
580 TRUE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
589
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_dont, /* complain_on_overflow */
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
607 16, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
619
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
634
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
649
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 0, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 0, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 EMPTY_HOWTO (13),
681 EMPTY_HOWTO (14),
682 EMPTY_HOWTO (15),
683 EMPTY_HOWTO (16),
684 EMPTY_HOWTO (17),
685 EMPTY_HOWTO (18),
686 EMPTY_HOWTO (19),
687 EMPTY_HOWTO (20),
688 EMPTY_HOWTO (21),
689 EMPTY_HOWTO (22),
690 EMPTY_HOWTO (23),
691 EMPTY_HOWTO (24),
692 EMPTY_HOWTO (25),
693 EMPTY_HOWTO (26),
694 EMPTY_HOWTO (27),
695 EMPTY_HOWTO (28),
696 EMPTY_HOWTO (29),
697 EMPTY_HOWTO (30),
698 EMPTY_HOWTO (31),
699 EMPTY_HOWTO (32),
700
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 32, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
730
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 24, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
745
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 10, /* bitsize */
750 TRUE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE, /* partial_inplace */
756 0xff, /* src_mask */
757 0xff, /* dst_mask */
758 TRUE), /* pcrel_offset */
759
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 TRUE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
774
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 26, /* bitsize */
780 TRUE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
789
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
792 16, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
804
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
819
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
849
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
854 0, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0, /* dst_mask */
863 FALSE), /* pcrel_offset */
864
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 0, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0, /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
884 32, /* bitsize */
885 TRUE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_bitfield, /* complain_on_overflow */
888 bfd_elf_generic_reloc,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE), /* pcrel_offset */
894
895 EMPTY_HOWTO (46),
896 EMPTY_HOWTO (47),
897
898 /* Like R_M32R_24, but referring to the GOT table entry for
899 the symbol. */
900 HOWTO (R_M32R_GOT24, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 24, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_unsigned, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
913
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL, /* type */
917 2, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 24, /* bitsize */
920 TRUE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_signed, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE), /* pcrel_offset */
929
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_bitfield, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* Like R_M32R_24, but used when setting global offset table
950 entries. */
951 HOWTO (R_M32R_GLOB_DAT, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_bitfield, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
964
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 32, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
979
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
982 addend. */
983 HOWTO (R_M32R_RELATIVE, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 32, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
996
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 24, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_bitfield, /* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1010
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1012 table register. */
1013 HOWTO (R_M32R_GOTPC24, /* type */
1014 0, /* rightshift */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 24, /* bitsize */
1017 TRUE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_unsigned, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE), /* pcrel_offset */
1026
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028 the symbol. */
1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1042
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044 the symbol. */
1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1060 the symbol. */
1061 HOWTO (R_M32R_GOT16_LO, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 0, /* bitpos */
1067 complain_overflow_dont, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1074
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077 the symbol. */
1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 bfd_elf_generic_reloc, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE), /* pcrel_offset */
1091
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094 the symbol. */
1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE), /* pcrel_offset */
1108
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1111 the symbol. */
1112 HOWTO (R_M32R_GOTPC_LO, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE), /* pcrel_offset */
1125
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 bfd_elf_generic_reloc, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167 };
1168
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1170
1171 struct m32r_reloc_map
1172 {
1173 bfd_reloc_code_real_type bfd_reloc_val;
1174 unsigned char elf_reloc_val;
1175 };
1176
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1179 {
1180 { BFD_RELOC_NONE, R_M32R_NONE },
1181 { BFD_RELOC_16, R_M32R_16 },
1182 { BFD_RELOC_32, R_M32R_32 },
1183 { BFD_RELOC_M32R_24, R_M32R_24 },
1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1193 };
1194 #else
1195 static const struct m32r_reloc_map m32r_reloc_map[] =
1196 {
1197 { BFD_RELOC_NONE, R_M32R_NONE },
1198 { BFD_RELOC_16, R_M32R_16_RELA },
1199 { BFD_RELOC_32, R_M32R_32_RELA },
1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1211
1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1229 };
1230 #endif
1231
1232 static reloc_howto_type *
1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 bfd_reloc_code_real_type code)
1235 {
1236 unsigned int i;
1237
1238 #ifdef USE_M32R_OLD_RELOC
1239 for (i = 0;
1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1241 i++)
1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1244
1245 #else /* ! USE_M32R_OLD_RELOC */
1246
1247 for (i = 0;
1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1249 i++)
1250 if (m32r_reloc_map[i].bfd_reloc_val == code)
1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1252 #endif
1253
1254 return NULL;
1255 }
1256
1257 static reloc_howto_type *
1258 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1259 const char *r_name)
1260 {
1261 unsigned int i;
1262
1263 for (i = 0;
1264 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
1265 i++)
1266 if (m32r_elf_howto_table[i].name != NULL
1267 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
1268 return &m32r_elf_howto_table[i];
1269
1270 return NULL;
1271 }
1272
1273 /* Set the howto pointer for an M32R ELF reloc. */
1274
1275 static void
1276 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1277 arelent *cache_ptr,
1278 Elf_Internal_Rela *dst)
1279 {
1280 unsigned int r_type;
1281
1282 r_type = ELF32_R_TYPE (dst->r_info);
1283 if (r_type > (unsigned int) R_M32R_GNU_VTENTRY)
1284 {
1285 _bfd_error_handler (_("%B: invalid M32R reloc number: %d"), abfd, r_type);
1286 r_type = 0;
1287 }
1288 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1289 }
1290
1291 static void
1292 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1293 arelent *cache_ptr,
1294 Elf_Internal_Rela *dst)
1295 {
1296 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1297 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1298 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1299 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1300 }
1301
1302 \f
1303 /* Given a BFD section, try to locate the corresponding ELF section
1304 index. */
1305
1306 static bfd_boolean
1307 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1308 asection *sec,
1309 int *retval)
1310 {
1311 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1312 {
1313 *retval = SHN_M32R_SCOMMON;
1314 return TRUE;
1315 }
1316 return FALSE;
1317 }
1318
1319 /* M32R ELF uses two common sections. One is the usual one, and the other
1320 is for small objects. All the small objects are kept together, and then
1321 referenced via one register, which yields faster assembler code. It is
1322 up to the compiler to emit an instruction to load the register with
1323 _SDA_BASE. This is what we use for the small common section. This
1324 approach is copied from elf32-mips.c. */
1325 static asection m32r_elf_scom_section;
1326 static asymbol m32r_elf_scom_symbol;
1327 static asymbol *m32r_elf_scom_symbol_ptr;
1328
1329 /* Handle the special M32R section numbers that a symbol may use. */
1330
1331 static void
1332 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1333 {
1334 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1335
1336 switch (elfsym->internal_elf_sym.st_shndx)
1337 {
1338 case SHN_M32R_SCOMMON:
1339 if (m32r_elf_scom_section.name == NULL)
1340 {
1341 /* Initialize the small common section. */
1342 m32r_elf_scom_section.name = ".scommon";
1343 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1344 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1345 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1346 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1347 m32r_elf_scom_symbol.name = ".scommon";
1348 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1349 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1350 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1351 }
1352 asym->section = &m32r_elf_scom_section;
1353 asym->value = elfsym->internal_elf_sym.st_size;
1354 break;
1355 }
1356 }
1357
1358 /* Hook called by the linker routine which adds symbols from an object
1359 file. We must handle the special M32R section numbers here.
1360 We also keep watching for whether we need to create the sdata special
1361 linker sections. */
1362
1363 static bfd_boolean
1364 m32r_elf_add_symbol_hook (bfd *abfd,
1365 struct bfd_link_info *info,
1366 Elf_Internal_Sym *sym,
1367 const char **namep,
1368 flagword *flagsp ATTRIBUTE_UNUSED,
1369 asection **secp,
1370 bfd_vma *valp)
1371 {
1372 if (! bfd_link_relocatable (info)
1373 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1374 && strcmp (*namep, "_SDA_BASE_") == 0
1375 && is_elf_hash_table (info->hash))
1376 {
1377 /* This is simpler than using _bfd_elf_create_linker_section
1378 (our needs are simpler than ppc's needs). Also
1379 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1380 section already exists a new one is created that follows it which
1381 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1382 struct elf_link_hash_entry *h;
1383 struct bfd_link_hash_entry *bh;
1384 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1385
1386 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1387 if (s == NULL)
1388 {
1389 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1390 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1391
1392 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1393 flags);
1394 if (s == NULL)
1395 return FALSE;
1396 if (! bfd_set_section_alignment (abfd, s, 2))
1397 return FALSE;
1398 }
1399
1400 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1401 FALSE, FALSE, FALSE);
1402
1403 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1404 && !(_bfd_generic_link_add_one_symbol (info,
1405 abfd,
1406 "_SDA_BASE_",
1407 BSF_GLOBAL,
1408 s,
1409 (bfd_vma) 32768,
1410 NULL,
1411 FALSE,
1412 get_elf_backend_data (abfd)->collect,
1413 &bh)))
1414 return FALSE;
1415 h = (struct elf_link_hash_entry *) bh;
1416 h->type = STT_OBJECT;
1417 }
1418
1419 switch (sym->st_shndx)
1420 {
1421 case SHN_M32R_SCOMMON:
1422 *secp = bfd_make_section_old_way (abfd, ".scommon");
1423 (*secp)->flags |= SEC_IS_COMMON;
1424 *valp = sym->st_size;
1425 break;
1426 }
1427
1428 return TRUE;
1429 }
1430
1431 /* We have to figure out the SDA_BASE value, so that we can adjust the
1432 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1433 BFD. If we can't find it, we're stuck. We cache it in the ELF
1434 target data. We don't need to adjust the symbol value for an
1435 external symbol if we are producing relocatable output. */
1436
1437 static bfd_reloc_status_type
1438 m32r_elf_final_sda_base (bfd *output_bfd,
1439 struct bfd_link_info *info,
1440 const char **error_message,
1441 bfd_vma *psb)
1442 {
1443 if (elf_gp (output_bfd) == 0)
1444 {
1445 struct bfd_link_hash_entry *h;
1446
1447 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1448 if (h != NULL && h->type == bfd_link_hash_defined)
1449 elf_gp (output_bfd) = (h->u.def.value
1450 + h->u.def.section->output_section->vma
1451 + h->u.def.section->output_offset);
1452 else
1453 {
1454 /* Only get the error once. */
1455 *psb = elf_gp (output_bfd) = 4;
1456 *error_message =
1457 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1458 return bfd_reloc_dangerous;
1459 }
1460 }
1461 *psb = elf_gp (output_bfd);
1462 return bfd_reloc_ok;
1463 }
1464 \f
1465 /* Return size of a PLT entry. */
1466 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1467
1468 /* The m32r linker needs to keep track of the number of relocs that it
1469 decides to copy in check_relocs for each symbol. This is so that
1470 it can discard PC relative relocs if it doesn't need them when
1471 linking with -Bsymbolic. We store the information in a field
1472 extending the regular ELF linker hash table. */
1473
1474 /* This structure keeps track of the number of PC relative relocs we
1475 have copied for a given symbol. */
1476
1477 struct elf_m32r_pcrel_relocs_copied
1478 {
1479 /* Next section. */
1480 struct elf_m32r_pcrel_relocs_copied *next;
1481 /* A section in dynobj. */
1482 asection *section;
1483 /* Number of relocs copied in this section. */
1484 bfd_size_type count;
1485 };
1486
1487 /* The sh linker needs to keep track of the number of relocs that it
1488 decides to copy as dynamic relocs in check_relocs for each symbol.
1489 This is so that it can later discard them if they are found to be
1490 unnecessary. We store the information in a field extending the
1491 regular ELF linker hash table. */
1492
1493 struct elf_m32r_dyn_relocs
1494 {
1495 struct elf_m32r_dyn_relocs *next;
1496
1497 /* The input section of the reloc. */
1498 asection *sec;
1499
1500 /* Total number of relocs copied for the input section. */
1501 bfd_size_type count;
1502
1503 /* Number of pc-relative relocs copied for the input section. */
1504 bfd_size_type pc_count;
1505 };
1506
1507
1508 /* m32r ELF linker hash entry. */
1509
1510 struct elf_m32r_link_hash_entry
1511 {
1512 struct elf_link_hash_entry root;
1513
1514 /* Track dynamic relocs copied for this symbol. */
1515 struct elf_m32r_dyn_relocs *dyn_relocs;
1516 };
1517
1518 /* m32r ELF linker hash table. */
1519
1520 struct elf_m32r_link_hash_table
1521 {
1522 struct elf_link_hash_table root;
1523
1524 /* Short-cuts to get to dynamic linker sections. */
1525 asection *sgot;
1526 asection *sgotplt;
1527 asection *srelgot;
1528 asection *splt;
1529 asection *srelplt;
1530 asection *sdynbss;
1531 asection *srelbss;
1532
1533 /* Small local sym cache. */
1534 struct sym_cache sym_cache;
1535 };
1536
1537 /* Traverse an m32r ELF linker hash table. */
1538
1539 #define m32r_elf_link_hash_traverse(table, func, info) \
1540 (elf_link_hash_traverse \
1541 (&(table)->root, \
1542 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1543 (info)))
1544
1545 /* Get the m32r ELF linker hash table from a link_info structure. */
1546
1547 #define m32r_elf_hash_table(p) \
1548 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1549 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
1550
1551 /* Create an entry in an m32r ELF linker hash table. */
1552
1553 static struct bfd_hash_entry *
1554 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1555 struct bfd_hash_table *table,
1556 const char *string)
1557 {
1558 struct elf_m32r_link_hash_entry *ret =
1559 (struct elf_m32r_link_hash_entry *) entry;
1560
1561 /* Allocate the structure if it has not already been allocated by a
1562 subclass. */
1563 if (ret == NULL)
1564 ret = bfd_hash_allocate (table,
1565 sizeof (struct elf_m32r_link_hash_entry));
1566 if (ret == NULL)
1567 return NULL;
1568
1569 /* Call the allocation method of the superclass. */
1570 ret = ((struct elf_m32r_link_hash_entry *)
1571 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1572 table, string));
1573 if (ret != NULL)
1574 {
1575 struct elf_m32r_link_hash_entry *eh;
1576
1577 eh = (struct elf_m32r_link_hash_entry *) ret;
1578 eh->dyn_relocs = NULL;
1579 }
1580
1581 return (struct bfd_hash_entry *) ret;
1582 }
1583
1584 /* Create an m32r ELF linker hash table. */
1585
1586 static struct bfd_link_hash_table *
1587 m32r_elf_link_hash_table_create (bfd *abfd)
1588 {
1589 struct elf_m32r_link_hash_table *ret;
1590 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1591
1592 ret = bfd_zmalloc (amt);
1593 if (ret == NULL)
1594 return NULL;
1595
1596 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1597 m32r_elf_link_hash_newfunc,
1598 sizeof (struct elf_m32r_link_hash_entry),
1599 M32R_ELF_DATA))
1600 {
1601 free (ret);
1602 return NULL;
1603 }
1604
1605 return &ret->root.root;
1606 }
1607
1608 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1609 shortcuts to them in our hash table. */
1610
1611 static bfd_boolean
1612 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1613 {
1614 struct elf_m32r_link_hash_table *htab;
1615
1616 if (! _bfd_elf_create_got_section (dynobj, info))
1617 return FALSE;
1618
1619 htab = m32r_elf_hash_table (info);
1620 if (htab == NULL)
1621 return FALSE;
1622
1623 htab->sgot = bfd_get_linker_section (dynobj, ".got");
1624 htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
1625 htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got");
1626 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
1627 abort ();
1628
1629 return TRUE;
1630 }
1631
1632 /* Create dynamic sections when linking against a dynamic object. */
1633
1634 static bfd_boolean
1635 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1636 {
1637 struct elf_m32r_link_hash_table *htab;
1638 flagword flags, pltflags;
1639 asection *s;
1640 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1641 int ptralign = 2; /* 32bit */
1642
1643 htab = m32r_elf_hash_table (info);
1644 if (htab == NULL)
1645 return FALSE;
1646
1647 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1648 .rel[a].bss sections. */
1649 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1650 | SEC_LINKER_CREATED);
1651
1652 pltflags = flags;
1653 pltflags |= SEC_CODE;
1654 if (bed->plt_not_loaded)
1655 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1656 if (bed->plt_readonly)
1657 pltflags |= SEC_READONLY;
1658
1659 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
1660 htab->splt = s;
1661 if (s == NULL
1662 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1663 return FALSE;
1664
1665 if (bed->want_plt_sym)
1666 {
1667 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1668 .plt section. */
1669 struct bfd_link_hash_entry *bh = NULL;
1670 struct elf_link_hash_entry *h;
1671
1672 if (! (_bfd_generic_link_add_one_symbol
1673 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1674 (bfd_vma) 0, NULL, FALSE,
1675 get_elf_backend_data (abfd)->collect, &bh)))
1676 return FALSE;
1677 h = (struct elf_link_hash_entry *) bh;
1678 h->def_regular = 1;
1679 h->type = STT_OBJECT;
1680 htab->root.hplt = h;
1681
1682 if (bfd_link_pic (info)
1683 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1684 return FALSE;
1685 }
1686
1687 s = bfd_make_section_anyway_with_flags (abfd,
1688 bed->default_use_rela_p
1689 ? ".rela.plt" : ".rel.plt",
1690 flags | SEC_READONLY);
1691 htab->srelplt = s;
1692 if (s == NULL
1693 || ! bfd_set_section_alignment (abfd, s, ptralign))
1694 return FALSE;
1695
1696 if (htab->sgot == NULL
1697 && ! create_got_section (abfd, info))
1698 return FALSE;
1699
1700 if (bed->want_dynbss)
1701 {
1702 /* The .dynbss section is a place to put symbols which are defined
1703 by dynamic objects, are referenced by regular objects, and are
1704 not functions. We must allocate space for them in the process
1705 image and use a R_*_COPY reloc to tell the dynamic linker to
1706 initialize them at run time. The linker script puts the .dynbss
1707 section into the .bss section of the final image. */
1708 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
1709 SEC_ALLOC | SEC_LINKER_CREATED);
1710 htab->sdynbss = s;
1711 if (s == NULL)
1712 return FALSE;
1713 /* The .rel[a].bss section holds copy relocs. This section is not
1714 normally needed. We need to create it here, though, so that the
1715 linker will map it to an output section. We can't just create it
1716 only if we need it, because we will not know whether we need it
1717 until we have seen all the input files, and the first time the
1718 main linker code calls BFD after examining all the input files
1719 (size_dynamic_sections) the input sections have already been
1720 mapped to the output sections. If the section turns out not to
1721 be needed, we can discard it later. We will never need this
1722 section when generating a shared object, since they do not use
1723 copy relocs. */
1724 if (! bfd_link_pic (info))
1725 {
1726 s = bfd_make_section_anyway_with_flags (abfd,
1727 (bed->default_use_rela_p
1728 ? ".rela.bss" : ".rel.bss"),
1729 flags | SEC_READONLY);
1730 htab->srelbss = s;
1731 if (s == NULL
1732 || ! bfd_set_section_alignment (abfd, s, ptralign))
1733 return FALSE;
1734 }
1735 }
1736
1737 return TRUE;
1738 }
1739
1740 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1741
1742 static void
1743 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1744 struct elf_link_hash_entry *dir,
1745 struct elf_link_hash_entry *ind)
1746 {
1747 struct elf_m32r_link_hash_entry * edir;
1748 struct elf_m32r_link_hash_entry * eind;
1749
1750 edir = (struct elf_m32r_link_hash_entry *) dir;
1751 eind = (struct elf_m32r_link_hash_entry *) ind;
1752
1753 if (eind->dyn_relocs != NULL)
1754 {
1755 if (edir->dyn_relocs != NULL)
1756 {
1757 struct elf_m32r_dyn_relocs **pp;
1758 struct elf_m32r_dyn_relocs *p;
1759
1760 /* Add reloc counts against the indirect sym to the direct sym
1761 list. Merge any entries against the same section. */
1762 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1763 {
1764 struct elf_m32r_dyn_relocs *q;
1765
1766 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1767 if (q->sec == p->sec)
1768 {
1769 q->pc_count += p->pc_count;
1770 q->count += p->count;
1771 *pp = p->next;
1772 break;
1773 }
1774 if (q == NULL)
1775 pp = &p->next;
1776 }
1777 *pp = edir->dyn_relocs;
1778 }
1779
1780 edir->dyn_relocs = eind->dyn_relocs;
1781 eind->dyn_relocs = NULL;
1782 }
1783
1784 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1785 }
1786
1787 \f
1788 /* Adjust a symbol defined by a dynamic object and referenced by a
1789 regular object. The current definition is in some section of the
1790 dynamic object, but we're not including those sections. We have to
1791 change the definition to something the rest of the link can
1792 understand. */
1793
1794 static bfd_boolean
1795 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1796 struct elf_link_hash_entry *h)
1797 {
1798 struct elf_m32r_link_hash_table *htab;
1799 struct elf_m32r_link_hash_entry *eh;
1800 struct elf_m32r_dyn_relocs *p;
1801 bfd *dynobj;
1802 asection *s;
1803
1804 #ifdef DEBUG_PIC
1805 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1806 #endif
1807
1808 dynobj = elf_hash_table (info)->dynobj;
1809
1810 /* Make sure we know what is going on here. */
1811 BFD_ASSERT (dynobj != NULL
1812 && (h->needs_plt
1813 || h->u.weakdef != NULL
1814 || (h->def_dynamic
1815 && h->ref_regular
1816 && !h->def_regular)));
1817
1818 /* If this is a function, put it in the procedure linkage table. We
1819 will fill in the contents of the procedure linkage table later,
1820 when we know the address of the .got section. */
1821 if (h->type == STT_FUNC
1822 || h->needs_plt)
1823 {
1824 if (! bfd_link_pic (info)
1825 && !h->def_dynamic
1826 && !h->ref_dynamic
1827 && h->root.type != bfd_link_hash_undefweak
1828 && h->root.type != bfd_link_hash_undefined)
1829 {
1830 /* This case can occur if we saw a PLT reloc in an input
1831 file, but the symbol was never referred to by a dynamic
1832 object. In such a case, we don't actually need to build
1833 a procedure linkage table, and we can just do a PCREL
1834 reloc instead. */
1835 h->plt.offset = (bfd_vma) -1;
1836 h->needs_plt = 0;
1837 }
1838
1839 return TRUE;
1840 }
1841 else
1842 h->plt.offset = (bfd_vma) -1;
1843
1844 /* If this is a weak symbol, and there is a real definition, the
1845 processor independent code will have arranged for us to see the
1846 real definition first, and we can just use the same value. */
1847 if (h->u.weakdef != NULL)
1848 {
1849 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1850 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1851 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1852 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1853 return TRUE;
1854 }
1855
1856 /* This is a reference to a symbol defined by a dynamic object which
1857 is not a function. */
1858
1859 /* If we are creating a shared library, we must presume that the
1860 only references to the symbol are via the global offset table.
1861 For such cases we need not do anything here; the relocations will
1862 be handled correctly by relocate_section. */
1863 if (bfd_link_pic (info))
1864 return TRUE;
1865
1866 /* If there are no references to this symbol that do not use the
1867 GOT, we don't need to generate a copy reloc. */
1868 if (!h->non_got_ref)
1869 return TRUE;
1870
1871 /* If -z nocopyreloc was given, we won't generate them either. */
1872 if (info->nocopyreloc)
1873 {
1874 h->non_got_ref = 0;
1875 return TRUE;
1876 }
1877
1878 eh = (struct elf_m32r_link_hash_entry *) h;
1879 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1880 {
1881 s = p->sec->output_section;
1882 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1883 break;
1884 }
1885
1886 /* If we didn't find any dynamic relocs in sections which needs the
1887 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1888 the copy reloc. */
1889 if (p == NULL)
1890 {
1891 h->non_got_ref = 0;
1892 return TRUE;
1893 }
1894
1895 /* We must allocate the symbol in our .dynbss section, which will
1896 become part of the .bss section of the executable. There will be
1897 an entry for this symbol in the .dynsym section. The dynamic
1898 object will contain position independent code, so all references
1899 from the dynamic object to this symbol will go through the global
1900 offset table. The dynamic linker will use the .dynsym entry to
1901 determine the address it must put in the global offset table, so
1902 both the dynamic object and the regular object will refer to the
1903 same memory location for the variable. */
1904
1905 htab = m32r_elf_hash_table (info);
1906 if (htab == NULL)
1907 return FALSE;
1908
1909 s = htab->sdynbss;
1910 BFD_ASSERT (s != NULL);
1911
1912 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1913 to copy the initial value out of the dynamic object and into the
1914 runtime process image. We need to remember the offset into the
1915 .rela.bss section we are going to use. */
1916 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1917 {
1918 asection *srel;
1919
1920 srel = htab->srelbss;
1921 BFD_ASSERT (srel != NULL);
1922 srel->size += sizeof (Elf32_External_Rela);
1923 h->needs_copy = 1;
1924 }
1925
1926 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1927 }
1928
1929 /* Allocate space in .plt, .got and associated reloc sections for
1930 dynamic relocs. */
1931
1932 static bfd_boolean
1933 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1934 {
1935 struct bfd_link_info *info;
1936 struct elf_m32r_link_hash_table *htab;
1937 struct elf_m32r_link_hash_entry *eh;
1938 struct elf_m32r_dyn_relocs *p;
1939
1940 if (h->root.type == bfd_link_hash_indirect)
1941 return TRUE;
1942
1943 info = (struct bfd_link_info *) inf;
1944 htab = m32r_elf_hash_table (info);
1945 if (htab == NULL)
1946 return FALSE;
1947
1948 eh = (struct elf_m32r_link_hash_entry *) h;
1949
1950 if (htab->root.dynamic_sections_created
1951 && h->plt.refcount > 0)
1952 {
1953 /* Make sure this symbol is output as a dynamic symbol.
1954 Undefined weak syms won't yet be marked as dynamic. */
1955 if (h->dynindx == -1
1956 && !h->forced_local)
1957 {
1958 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1959 return FALSE;
1960 }
1961
1962 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
1963 {
1964 asection *s = htab->splt;
1965
1966 /* If this is the first .plt entry, make room for the special
1967 first entry. */
1968 if (s->size == 0)
1969 s->size += PLT_ENTRY_SIZE;
1970
1971 h->plt.offset = s->size;
1972
1973 /* If this symbol is not defined in a regular file, and we are
1974 not generating a shared library, then set the symbol to this
1975 location in the .plt. This is required to make function
1976 pointers compare as equal between the normal executable and
1977 the shared library. */
1978 if (! bfd_link_pic (info)
1979 && !h->def_regular)
1980 {
1981 h->root.u.def.section = s;
1982 h->root.u.def.value = h->plt.offset;
1983 }
1984
1985 /* Make room for this entry. */
1986 s->size += PLT_ENTRY_SIZE;
1987
1988 /* We also need to make an entry in the .got.plt section, which
1989 will be placed in the .got section by the linker script. */
1990 htab->sgotplt->size += 4;
1991
1992 /* We also need to make an entry in the .rel.plt section. */
1993 htab->srelplt->size += sizeof (Elf32_External_Rela);
1994 }
1995 else
1996 {
1997 h->plt.offset = (bfd_vma) -1;
1998 h->needs_plt = 0;
1999 }
2000 }
2001 else
2002 {
2003 h->plt.offset = (bfd_vma) -1;
2004 h->needs_plt = 0;
2005 }
2006
2007 if (h->got.refcount > 0)
2008 {
2009 asection *s;
2010 bfd_boolean dyn;
2011
2012 /* Make sure this symbol is output as a dynamic symbol.
2013 Undefined weak syms won't yet be marked as dynamic. */
2014 if (h->dynindx == -1
2015 && !h->forced_local)
2016 {
2017 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2018 return FALSE;
2019 }
2020
2021 s = htab->sgot;
2022
2023 h->got.offset = s->size;
2024 s->size += 4;
2025 dyn = htab->root.dynamic_sections_created;
2026 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
2027 htab->srelgot->size += sizeof (Elf32_External_Rela);
2028 }
2029 else
2030 h->got.offset = (bfd_vma) -1;
2031
2032 if (eh->dyn_relocs == NULL)
2033 return TRUE;
2034
2035 /* In the shared -Bsymbolic case, discard space allocated for
2036 dynamic pc-relative relocs against symbols which turn out to be
2037 defined in regular objects. For the normal shared case, discard
2038 space for pc-relative relocs that have become local due to symbol
2039 visibility changes. */
2040
2041 if (bfd_link_pic (info))
2042 {
2043 if (h->def_regular
2044 && (h->forced_local
2045 || info->symbolic))
2046 {
2047 struct elf_m32r_dyn_relocs **pp;
2048
2049 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2050 {
2051 p->count -= p->pc_count;
2052 p->pc_count = 0;
2053 if (p->count == 0)
2054 *pp = p->next;
2055 else
2056 pp = &p->next;
2057 }
2058 }
2059
2060 /* Also discard relocs on undefined weak syms with non-default
2061 visibility. */
2062 if (eh->dyn_relocs != NULL
2063 && h->root.type == bfd_link_hash_undefweak)
2064 {
2065 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2066 eh->dyn_relocs = NULL;
2067
2068 /* Make sure undefined weak symbols are output as a dynamic
2069 symbol in PIEs. */
2070 else if (h->dynindx == -1
2071 && !h->forced_local)
2072 {
2073 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2074 return FALSE;
2075 }
2076 }
2077 }
2078 else
2079 {
2080 /* For the non-shared case, discard space for relocs against
2081 symbols which turn out to need copy relocs or are not
2082 dynamic. */
2083
2084 if (!h->non_got_ref
2085 && ((h->def_dynamic
2086 && !h->def_regular)
2087 || (htab->root.dynamic_sections_created
2088 && (h->root.type == bfd_link_hash_undefweak
2089 || h->root.type == bfd_link_hash_undefined))))
2090 {
2091 /* Make sure this symbol is output as a dynamic symbol.
2092 Undefined weak syms won't yet be marked as dynamic. */
2093 if (h->dynindx == -1
2094 && !h->forced_local)
2095 {
2096 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2097 return FALSE;
2098 }
2099
2100 /* If that succeeded, we know we'll be keeping all the
2101 relocs. */
2102 if (h->dynindx != -1)
2103 goto keep;
2104 }
2105
2106 eh->dyn_relocs = NULL;
2107
2108 keep: ;
2109 }
2110
2111 /* Finally, allocate space. */
2112 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2113 {
2114 asection *sreloc = elf_section_data (p->sec)->sreloc;
2115 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2116 }
2117
2118 return TRUE;
2119 }
2120
2121 /* Find any dynamic relocs that apply to read-only sections. */
2122
2123 static bfd_boolean
2124 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2125 {
2126 struct elf_m32r_link_hash_entry *eh;
2127 struct elf_m32r_dyn_relocs *p;
2128
2129 eh = (struct elf_m32r_link_hash_entry *) h;
2130 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2131 {
2132 asection *s = p->sec->output_section;
2133
2134 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2135 {
2136 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2137
2138 info->flags |= DF_TEXTREL;
2139
2140 /* Not an error, just cut short the traversal. */
2141 return FALSE;
2142 }
2143 }
2144 return TRUE;
2145 }
2146
2147 /* Set the sizes of the dynamic sections. */
2148
2149 static bfd_boolean
2150 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2151 struct bfd_link_info *info)
2152 {
2153 struct elf_m32r_link_hash_table *htab;
2154 bfd *dynobj;
2155 asection *s;
2156 bfd_boolean relocs;
2157 bfd *ibfd;
2158
2159 #ifdef DEBUG_PIC
2160 printf ("m32r_elf_size_dynamic_sections()\n");
2161 #endif
2162
2163 htab = m32r_elf_hash_table (info);
2164 if (htab == NULL)
2165 return FALSE;
2166
2167 dynobj = htab->root.dynobj;
2168 BFD_ASSERT (dynobj != NULL);
2169
2170 if (htab->root.dynamic_sections_created)
2171 {
2172 /* Set the contents of the .interp section to the interpreter. */
2173 if (bfd_link_executable (info) && !info->nointerp)
2174 {
2175 s = bfd_get_linker_section (dynobj, ".interp");
2176 BFD_ASSERT (s != NULL);
2177 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2178 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2179 }
2180 }
2181
2182 /* Set up .got offsets for local syms, and space for local dynamic
2183 relocs. */
2184 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2185 {
2186 bfd_signed_vma *local_got;
2187 bfd_signed_vma *end_local_got;
2188 bfd_size_type locsymcount;
2189 Elf_Internal_Shdr *symtab_hdr;
2190 asection *srel;
2191
2192 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2193 continue;
2194
2195 for (s = ibfd->sections; s != NULL; s = s->next)
2196 {
2197 struct elf_m32r_dyn_relocs *p;
2198
2199 for (p = ((struct elf_m32r_dyn_relocs *)
2200 elf_section_data (s)->local_dynrel);
2201 p != NULL;
2202 p = p->next)
2203 {
2204 if (! bfd_is_abs_section (p->sec)
2205 && bfd_is_abs_section (p->sec->output_section))
2206 {
2207 /* Input section has been discarded, either because
2208 it is a copy of a linkonce section or due to
2209 linker script /DISCARD/, so we'll be discarding
2210 the relocs too. */
2211 }
2212 else if (p->count != 0)
2213 {
2214 srel = elf_section_data (p->sec)->sreloc;
2215 srel->size += p->count * sizeof (Elf32_External_Rela);
2216 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2217 info->flags |= DF_TEXTREL;
2218 }
2219 }
2220 }
2221
2222 local_got = elf_local_got_refcounts (ibfd);
2223 if (!local_got)
2224 continue;
2225
2226 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2227 locsymcount = symtab_hdr->sh_info;
2228 end_local_got = local_got + locsymcount;
2229 s = htab->sgot;
2230 srel = htab->srelgot;
2231 for (; local_got < end_local_got; ++local_got)
2232 {
2233 if (*local_got > 0)
2234 {
2235 *local_got = s->size;
2236 s->size += 4;
2237 if (bfd_link_pic (info))
2238 srel->size += sizeof (Elf32_External_Rela);
2239 }
2240 else
2241 *local_got = (bfd_vma) -1;
2242 }
2243 }
2244
2245 /* Allocate global sym .plt and .got entries, and space for global
2246 sym dynamic relocs. */
2247 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2248
2249 /* We now have determined the sizes of the various dynamic sections.
2250 Allocate memory for them. */
2251 relocs = FALSE;
2252 for (s = dynobj->sections; s != NULL; s = s->next)
2253 {
2254 if ((s->flags & SEC_LINKER_CREATED) == 0)
2255 continue;
2256
2257 if (s == htab->splt
2258 || s == htab->sgot
2259 || s == htab->sgotplt
2260 || s == htab->sdynbss)
2261 {
2262 /* Strip this section if we don't need it; see the
2263 comment below. */
2264 }
2265 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2266 {
2267 if (s->size != 0 && s != htab->srelplt)
2268 relocs = TRUE;
2269
2270 /* We use the reloc_count field as a counter if we need
2271 to copy relocs into the output file. */
2272 s->reloc_count = 0;
2273 }
2274 else
2275 /* It's not one of our sections, so don't allocate space. */
2276 continue;
2277
2278 if (s->size == 0)
2279 {
2280 /* If we don't need this section, strip it from the
2281 output file. This is mostly to handle .rela.bss and
2282 .rela.plt. We must create both sections in
2283 create_dynamic_sections, because they must be created
2284 before the linker maps input sections to output
2285 sections. The linker does that before
2286 adjust_dynamic_symbol is called, and it is that
2287 function which decides whether anything needs to go
2288 into these sections. */
2289 s->flags |= SEC_EXCLUDE;
2290 continue;
2291 }
2292
2293 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2294 continue;
2295
2296 /* Allocate memory for the section contents. We use bfd_zalloc
2297 here in case unused entries are not reclaimed before the
2298 section's contents are written out. This should not happen,
2299 but this way if it does, we get a R_M32R_NONE reloc instead
2300 of garbage. */
2301 s->contents = bfd_zalloc (dynobj, s->size);
2302 if (s->contents == NULL)
2303 return FALSE;
2304 }
2305
2306 if (htab->root.dynamic_sections_created)
2307 {
2308 /* Add some entries to the .dynamic section. We fill in the
2309 values later, in m32r_elf_finish_dynamic_sections, but we
2310 must add the entries now so that we get the correct size for
2311 the .dynamic section. The DT_DEBUG entry is filled in by the
2312 dynamic linker and used by the debugger. */
2313 #define add_dynamic_entry(TAG, VAL) \
2314 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2315
2316 if (bfd_link_executable (info))
2317 {
2318 if (! add_dynamic_entry (DT_DEBUG, 0))
2319 return FALSE;
2320 }
2321
2322 if (htab->splt->size != 0)
2323 {
2324 if (! add_dynamic_entry (DT_PLTGOT, 0)
2325 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2326 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2327 || ! add_dynamic_entry (DT_JMPREL, 0))
2328 return FALSE;
2329 }
2330
2331 if (relocs)
2332 {
2333 if (! add_dynamic_entry (DT_RELA, 0)
2334 || ! add_dynamic_entry (DT_RELASZ, 0)
2335 || ! add_dynamic_entry (DT_RELAENT,
2336 sizeof (Elf32_External_Rela)))
2337 return FALSE;
2338
2339 /* If any dynamic relocs apply to a read-only section,
2340 then we need a DT_TEXTREL entry. */
2341 if ((info->flags & DF_TEXTREL) == 0)
2342 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2343 info);
2344
2345 if ((info->flags & DF_TEXTREL) != 0)
2346 {
2347 if (! add_dynamic_entry (DT_TEXTREL, 0))
2348 return FALSE;
2349 }
2350 }
2351 }
2352 #undef add_dynamic_entry
2353
2354 return TRUE;
2355 }
2356
2357 /* Relocate an M32R/D ELF section.
2358 There is some attempt to make this function usable for many architectures,
2359 both for RELA and REL type relocs, if only to serve as a learning tool.
2360
2361 The RELOCATE_SECTION function is called by the new ELF backend linker
2362 to handle the relocations for a section.
2363
2364 The relocs are always passed as Rela structures; if the section
2365 actually uses Rel structures, the r_addend field will always be
2366 zero.
2367
2368 This function is responsible for adjust the section contents as
2369 necessary, and (if using Rela relocs and generating a
2370 relocatable output file) adjusting the reloc addend as
2371 necessary.
2372
2373 This function does not have to worry about setting the reloc
2374 address or the reloc symbol index.
2375
2376 LOCAL_SYMS is a pointer to the swapped in local symbols.
2377
2378 LOCAL_SECTIONS is an array giving the section in the input file
2379 corresponding to the st_shndx field of each local symbol.
2380
2381 The global hash table entry for the global symbols can be found
2382 via elf_sym_hashes (input_bfd).
2383
2384 When generating relocatable output, this function must handle
2385 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2386 going to be the section symbol corresponding to the output
2387 section, which means that the addend must be adjusted
2388 accordingly. */
2389
2390 static bfd_boolean
2391 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2392 struct bfd_link_info *info,
2393 bfd *input_bfd,
2394 asection *input_section,
2395 bfd_byte *contents,
2396 Elf_Internal_Rela *relocs,
2397 Elf_Internal_Sym *local_syms,
2398 asection **local_sections)
2399 {
2400 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2401 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2402 Elf_Internal_Rela *rel, *relend;
2403 /* Assume success. */
2404 bfd_boolean ret = TRUE;
2405 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2406 bfd *dynobj;
2407 bfd_vma *local_got_offsets;
2408 asection *sgot, *splt, *sreloc;
2409 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2410
2411 if (htab == NULL)
2412 return FALSE;
2413
2414 dynobj = htab->root.dynobj;
2415 local_got_offsets = elf_local_got_offsets (input_bfd);
2416
2417 sgot = htab->sgot;
2418 splt = htab->splt;
2419 sreloc = NULL;
2420
2421 rel = relocs;
2422 relend = relocs + input_section->reloc_count;
2423 for (; rel < relend; rel++)
2424 {
2425 int r_type;
2426 reloc_howto_type *howto;
2427 unsigned long r_symndx;
2428 struct elf_link_hash_entry *h;
2429 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2430 ensure it's zero (we use REL relocs, not RELA). Therefore this
2431 should be assigning zero to `addend', but for clarity we use
2432 `r_addend'. */
2433 bfd_vma addend = rel->r_addend;
2434 bfd_vma offset = rel->r_offset;
2435 bfd_vma relocation;
2436 Elf_Internal_Sym *sym;
2437 asection *sec;
2438 const char *sym_name;
2439 bfd_reloc_status_type r;
2440 const char *errmsg = NULL;
2441 bfd_boolean use_rel = FALSE;
2442
2443 h = NULL;
2444 r_type = ELF32_R_TYPE (rel->r_info);
2445 if (r_type < 0 || r_type >= (int) R_M32R_max)
2446 {
2447 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2448 input_bfd,
2449 (int) r_type);
2450 bfd_set_error (bfd_error_bad_value);
2451 ret = FALSE;
2452 continue;
2453 }
2454
2455 if ( r_type == R_M32R_GNU_VTENTRY
2456 || r_type == R_M32R_GNU_VTINHERIT
2457 || r_type == R_M32R_NONE
2458 || r_type == R_M32R_RELA_GNU_VTENTRY
2459 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2460 continue;
2461
2462 if (r_type <= R_M32R_GNU_VTENTRY)
2463 use_rel = TRUE;
2464
2465 howto = m32r_elf_howto_table + r_type;
2466 r_symndx = ELF32_R_SYM (rel->r_info);
2467
2468 sym = NULL;
2469 sec = NULL;
2470 h = NULL;
2471
2472 if (r_symndx < symtab_hdr->sh_info)
2473 {
2474 /* Local symbol. */
2475 sym = local_syms + r_symndx;
2476 sec = local_sections[r_symndx];
2477 sym_name = "<local symbol>";
2478
2479 if (!use_rel)
2480 {
2481 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2482 addend = rel->r_addend;
2483 }
2484 else
2485 {
2486 relocation = (sec->output_section->vma
2487 + sec->output_offset
2488 + sym->st_value);
2489 }
2490 }
2491 else
2492 {
2493 /* External symbol. */
2494 relocation = 0;
2495
2496 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2497
2498 if (info->wrap_hash != NULL
2499 && (input_section->flags & SEC_DEBUGGING) != 0)
2500 h = ((struct elf_link_hash_entry *)
2501 unwrap_hash_lookup (info, input_bfd, &h->root));
2502
2503 while (h->root.type == bfd_link_hash_indirect
2504 || h->root.type == bfd_link_hash_warning)
2505 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2506 sym_name = h->root.root.string;
2507
2508 if (h->root.type == bfd_link_hash_defined
2509 || h->root.type == bfd_link_hash_defweak)
2510 {
2511 bfd_boolean dyn;
2512 sec = h->root.u.def.section;
2513
2514 dyn = htab->root.dynamic_sections_created;
2515 sec = h->root.u.def.section;
2516 if (r_type == R_M32R_GOTPC24
2517 || (r_type == R_M32R_GOTPC_HI_ULO
2518 || r_type == R_M32R_GOTPC_HI_SLO
2519 || r_type == R_M32R_GOTPC_LO)
2520 || (r_type == R_M32R_26_PLTREL
2521 && h->plt.offset != (bfd_vma) -1)
2522 || ((r_type == R_M32R_GOT24
2523 || r_type == R_M32R_GOT16_HI_ULO
2524 || r_type == R_M32R_GOT16_HI_SLO
2525 || r_type == R_M32R_GOT16_LO)
2526 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2527 bfd_link_pic (info),
2528 h)
2529 && (! bfd_link_pic (info)
2530 || (! info->symbolic && h->dynindx != -1)
2531 || !h->def_regular))
2532 || (bfd_link_pic (info)
2533 && ((! info->symbolic && h->dynindx != -1)
2534 || !h->def_regular)
2535 && (((r_type == R_M32R_16_RELA
2536 || r_type == R_M32R_32_RELA
2537 || r_type == R_M32R_24_RELA
2538 || r_type == R_M32R_HI16_ULO_RELA
2539 || r_type == R_M32R_HI16_SLO_RELA
2540 || r_type == R_M32R_LO16_RELA)
2541 && !h->forced_local)
2542 || r_type == R_M32R_REL32
2543 || r_type == R_M32R_10_PCREL_RELA
2544 || r_type == R_M32R_18_PCREL_RELA
2545 || r_type == R_M32R_26_PCREL_RELA)
2546 && ((input_section->flags & SEC_ALLOC) != 0
2547 /* DWARF will emit R_M32R_16(24,32) relocations
2548 in its sections against symbols defined
2549 externally in shared libraries. We can't do
2550 anything with them here. */
2551 || ((input_section->flags & SEC_DEBUGGING) != 0
2552 && h->def_dynamic))))
2553 {
2554 /* In these cases, we don't need the relocation
2555 value. We check specially because in some
2556 obscure cases sec->output_section will be NULL. */
2557 }
2558 else if (sec->output_section != NULL)
2559 relocation = (h->root.u.def.value
2560 + sec->output_section->vma
2561 + sec->output_offset);
2562 else if (!bfd_link_relocatable (info)
2563 && (_bfd_elf_section_offset (output_bfd, info,
2564 input_section,
2565 rel->r_offset)
2566 != (bfd_vma) -1))
2567 {
2568 (*_bfd_error_handler)
2569 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2570 input_bfd,
2571 input_section,
2572 (long) rel->r_offset,
2573 howto->name,
2574 h->root.root.string);
2575 }
2576 }
2577 else if (h->root.type == bfd_link_hash_undefweak)
2578 ;
2579 else if (info->unresolved_syms_in_objects == RM_IGNORE
2580 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2581 ;
2582 else if (!bfd_link_relocatable (info))
2583 {
2584 if (! ((*info->callbacks->undefined_symbol)
2585 (info, h->root.root.string, input_bfd,
2586 input_section, offset,
2587 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2588 || ELF_ST_VISIBILITY (h->other)))))
2589 return FALSE;
2590 }
2591 }
2592
2593 if (sec != NULL && discarded_section (sec))
2594 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2595 rel, 1, relend, howto, 0, contents);
2596
2597 if (bfd_link_relocatable (info) && !use_rel)
2598 {
2599 /* This is a relocatable link. We don't have to change
2600 anything, unless the reloc is against a section symbol,
2601 in which case we have to adjust according to where the
2602 section symbol winds up in the output section. */
2603 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2604 rel->r_addend += sec->output_offset;
2605 continue;
2606 }
2607
2608 if (bfd_link_relocatable (info) && use_rel)
2609 {
2610 /* This is a relocatable link. We don't have to change
2611 anything, unless the reloc is against a section symbol,
2612 in which case we have to adjust according to where the
2613 section symbol winds up in the output section. */
2614 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2615 continue;
2616
2617 addend += sec->output_offset;
2618
2619 /* If partial_inplace, we need to store any additional addend
2620 back in the section. */
2621 if (! howto->partial_inplace)
2622 continue;
2623 /* ??? Here is a nice place to call a special_function
2624 like handler. */
2625 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2626 r = _bfd_relocate_contents (howto, input_bfd,
2627 addend, contents + offset);
2628 else
2629 {
2630 Elf_Internal_Rela *lorel;
2631
2632 /* We allow an arbitrary number of HI16 relocs before the
2633 LO16 reloc. This permits gcc to emit the HI and LO relocs
2634 itself. */
2635 for (lorel = rel + 1;
2636 (lorel < relend
2637 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2638 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2639 lorel++)
2640 continue;
2641 if (lorel < relend
2642 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2643 {
2644 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2645 contents, addend);
2646 r = bfd_reloc_ok;
2647 }
2648 else
2649 r = _bfd_relocate_contents (howto, input_bfd,
2650 addend, contents + offset);
2651 }
2652 }
2653 else
2654 {
2655 /* Sanity check the address. */
2656 if (offset > high_address)
2657 {
2658 r = bfd_reloc_outofrange;
2659 goto check_reloc;
2660 }
2661
2662 switch ((int) r_type)
2663 {
2664 case R_M32R_GOTOFF:
2665 /* Relocation is relative to the start of the global offset
2666 table (for ld24 rx, #uimm24). eg access at label+addend
2667
2668 ld24 rx. #label@GOTOFF + addend
2669 sub rx, r12. */
2670
2671 BFD_ASSERT (sgot != NULL);
2672
2673 relocation = -(relocation - sgot->output_section->vma);
2674 rel->r_addend = -rel->r_addend;
2675 break;
2676
2677 case R_M32R_GOTOFF_HI_ULO:
2678 case R_M32R_GOTOFF_HI_SLO:
2679 case R_M32R_GOTOFF_LO:
2680 BFD_ASSERT (sgot != NULL);
2681
2682 relocation -= sgot->output_section->vma;
2683
2684 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2685 && ((relocation + rel->r_addend) & 0x8000))
2686 rel->r_addend += 0x10000;
2687 break;
2688
2689 case R_M32R_GOTPC24:
2690 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2691 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2692 */
2693 relocation = sgot->output_section->vma;
2694 break;
2695
2696 case R_M32R_GOTPC_HI_ULO:
2697 case R_M32R_GOTPC_HI_SLO:
2698 case R_M32R_GOTPC_LO:
2699 {
2700 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2701 bl .+4
2702 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2703 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2704 or
2705 bl .+4
2706 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2707 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2708 */
2709 relocation = sgot->output_section->vma;
2710 relocation -= (input_section->output_section->vma
2711 + input_section->output_offset
2712 + rel->r_offset);
2713 if ((r_type == R_M32R_GOTPC_HI_SLO)
2714 && ((relocation + rel->r_addend) & 0x8000))
2715 rel->r_addend += 0x10000;
2716
2717 break;
2718 }
2719 case R_M32R_GOT16_HI_ULO:
2720 case R_M32R_GOT16_HI_SLO:
2721 case R_M32R_GOT16_LO:
2722 /* Fall through. */
2723 case R_M32R_GOT24:
2724 /* Relocation is to the entry for this symbol in the global
2725 offset table. */
2726 BFD_ASSERT (sgot != NULL);
2727
2728 if (h != NULL)
2729 {
2730 bfd_boolean dyn;
2731 bfd_vma off;
2732
2733 off = h->got.offset;
2734 BFD_ASSERT (off != (bfd_vma) -1);
2735
2736 dyn = htab->root.dynamic_sections_created;
2737 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2738 bfd_link_pic (info),
2739 h)
2740 || (bfd_link_pic (info)
2741 && (info->symbolic
2742 || h->dynindx == -1
2743 || h->forced_local)
2744 && h->def_regular))
2745 {
2746 /* This is actually a static link, or it is a
2747 -Bsymbolic link and the symbol is defined
2748 locally, or the symbol was forced to be local
2749 because of a version file. We must initialize
2750 this entry in the global offset table. Since the
2751 offset must always be a multiple of 4, we use the
2752 least significant bit to record whether we have
2753 initialized it already.
2754
2755 When doing a dynamic link, we create a .rela.got
2756 relocation entry to initialize the value. This
2757 is done in the finish_dynamic_symbol routine. */
2758 if ((off & 1) != 0)
2759 off &= ~1;
2760 else
2761 {
2762 bfd_put_32 (output_bfd, relocation,
2763 sgot->contents + off);
2764 h->got.offset |= 1;
2765 }
2766 }
2767
2768 relocation = sgot->output_offset + off;
2769 }
2770 else
2771 {
2772 bfd_vma off;
2773 bfd_byte *loc;
2774
2775 BFD_ASSERT (local_got_offsets != NULL
2776 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2777
2778 off = local_got_offsets[r_symndx];
2779
2780 /* The offset must always be a multiple of 4. We use
2781 the least significant bit to record whether we have
2782 already processed this entry. */
2783 if ((off & 1) != 0)
2784 off &= ~1;
2785 else
2786 {
2787 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2788
2789 if (bfd_link_pic (info))
2790 {
2791 asection *srelgot;
2792 Elf_Internal_Rela outrel;
2793
2794 /* We need to generate a R_M32R_RELATIVE reloc
2795 for the dynamic linker. */
2796 srelgot = bfd_get_linker_section (dynobj,
2797 ".rela.got");
2798 BFD_ASSERT (srelgot != NULL);
2799
2800 outrel.r_offset = (sgot->output_section->vma
2801 + sgot->output_offset
2802 + off);
2803 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2804 outrel.r_addend = relocation;
2805 loc = srelgot->contents;
2806 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2807 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2808 ++srelgot->reloc_count;
2809 }
2810
2811 local_got_offsets[r_symndx] |= 1;
2812 }
2813
2814 relocation = sgot->output_offset + off;
2815 }
2816 if ((r_type == R_M32R_GOT16_HI_SLO)
2817 && ((relocation + rel->r_addend) & 0x8000))
2818 rel->r_addend += 0x10000;
2819
2820 break;
2821
2822 case R_M32R_26_PLTREL:
2823 /* Relocation is to the entry for this symbol in the
2824 procedure linkage table. */
2825
2826 /* The native assembler will generate a 26_PLTREL reloc
2827 for a local symbol if you assemble a call from one
2828 section to another when using -K pic. */
2829 if (h == NULL)
2830 break;
2831
2832 if (h->forced_local)
2833 break;
2834
2835 if (h->plt.offset == (bfd_vma) -1)
2836 /* We didn't make a PLT entry for this symbol. This
2837 happens when statically linking PIC code, or when
2838 using -Bsymbolic. */
2839 break;
2840
2841 relocation = (splt->output_section->vma
2842 + splt->output_offset
2843 + h->plt.offset);
2844 break;
2845
2846 case R_M32R_HI16_SLO_RELA:
2847 if ((relocation + rel->r_addend) & 0x8000)
2848 rel->r_addend += 0x10000;
2849 /* Fall through. */
2850
2851 case R_M32R_16_RELA:
2852 case R_M32R_24_RELA:
2853 case R_M32R_32_RELA:
2854 case R_M32R_REL32:
2855 case R_M32R_10_PCREL_RELA:
2856 case R_M32R_18_PCREL_RELA:
2857 case R_M32R_26_PCREL_RELA:
2858 case R_M32R_HI16_ULO_RELA:
2859 case R_M32R_LO16_RELA:
2860 if (bfd_link_pic (info)
2861 && r_symndx != STN_UNDEF
2862 && (input_section->flags & SEC_ALLOC) != 0
2863 && (( r_type != R_M32R_10_PCREL_RELA
2864 && r_type != R_M32R_18_PCREL_RELA
2865 && r_type != R_M32R_26_PCREL_RELA
2866 && r_type != R_M32R_REL32)
2867 || (h != NULL
2868 && h->dynindx != -1
2869 && (! info->symbolic
2870 || !h->def_regular))))
2871 {
2872 Elf_Internal_Rela outrel;
2873 bfd_boolean skip, relocate;
2874 bfd_byte *loc;
2875
2876 /* When generating a shared object, these relocations
2877 are copied into the output file to be resolved at run
2878 time. */
2879 if (sreloc == NULL)
2880 {
2881 sreloc = _bfd_elf_get_dynamic_reloc_section
2882 (input_bfd, input_section, /*rela?*/ TRUE);
2883 if (sreloc == NULL)
2884 return FALSE;
2885 }
2886
2887 skip = FALSE;
2888 relocate = FALSE;
2889
2890 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2891 info,
2892 input_section,
2893 rel->r_offset);
2894 if (outrel.r_offset == (bfd_vma) -1)
2895 skip = TRUE;
2896 else if (outrel.r_offset == (bfd_vma) -2)
2897 skip = relocate = TRUE;
2898 outrel.r_offset += (input_section->output_section->vma
2899 + input_section->output_offset);
2900
2901 if (skip)
2902 memset (&outrel, 0, sizeof outrel);
2903 else if ( r_type == R_M32R_10_PCREL_RELA
2904 || r_type == R_M32R_18_PCREL_RELA
2905 || r_type == R_M32R_26_PCREL_RELA
2906 || r_type == R_M32R_REL32)
2907 {
2908 BFD_ASSERT (h != NULL && h->dynindx != -1);
2909 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2910 outrel.r_addend = rel->r_addend;
2911 }
2912 else
2913 {
2914 /* h->dynindx may be -1 if this symbol was marked to
2915 become local. */
2916 if (h == NULL
2917 || ((info->symbolic || h->dynindx == -1)
2918 && h->def_regular))
2919 {
2920 relocate = TRUE;
2921 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2922 outrel.r_addend = relocation + rel->r_addend;
2923 }
2924 else
2925 {
2926 BFD_ASSERT (h->dynindx != -1);
2927 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2928 outrel.r_addend = relocation + rel->r_addend;
2929 }
2930 }
2931
2932 loc = sreloc->contents;
2933 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2934 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2935 ++sreloc->reloc_count;
2936
2937 /* If this reloc is against an external symbol, we do
2938 not want to fiddle with the addend. Otherwise, we
2939 need to include the symbol value so that it becomes
2940 an addend for the dynamic reloc. */
2941 if (! relocate)
2942 continue;
2943 break;
2944 }
2945 else if (r_type != R_M32R_10_PCREL_RELA)
2946 break;
2947 /* Fall through. */
2948
2949 case (int) R_M32R_10_PCREL :
2950 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2951 contents, offset,
2952 sec, relocation, addend);
2953 goto check_reloc;
2954
2955 case (int) R_M32R_HI16_SLO :
2956 case (int) R_M32R_HI16_ULO :
2957 {
2958 Elf_Internal_Rela *lorel;
2959
2960 /* We allow an arbitrary number of HI16 relocs before the
2961 LO16 reloc. This permits gcc to emit the HI and LO relocs
2962 itself. */
2963 for (lorel = rel + 1;
2964 (lorel < relend
2965 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2966 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2967 lorel++)
2968 continue;
2969 if (lorel < relend
2970 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2971 {
2972 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2973 contents, relocation + addend);
2974 r = bfd_reloc_ok;
2975 }
2976 else
2977 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2978 contents, offset,
2979 relocation, addend);
2980 }
2981
2982 goto check_reloc;
2983
2984 case (int) R_M32R_SDA16_RELA:
2985 case (int) R_M32R_SDA16 :
2986 {
2987 const char *name;
2988
2989 BFD_ASSERT (sec != NULL);
2990 name = bfd_get_section_name (sec->owner, sec);
2991
2992 if ( strcmp (name, ".sdata") == 0
2993 || strcmp (name, ".sbss") == 0
2994 || strcmp (name, ".scommon") == 0)
2995 {
2996 bfd_vma sda_base;
2997 bfd *out_bfd = sec->output_section->owner;
2998
2999 r = m32r_elf_final_sda_base (out_bfd, info,
3000 &errmsg,
3001 &sda_base);
3002 if (r != bfd_reloc_ok)
3003 {
3004 ret = FALSE;
3005 goto check_reloc;
3006 }
3007
3008 /* At this point `relocation' contains the object's
3009 address. */
3010 relocation -= sda_base;
3011 /* Now it contains the offset from _SDA_BASE_. */
3012 }
3013 else
3014 {
3015 (*_bfd_error_handler)
3016 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3017 input_bfd,
3018 sec,
3019 sym_name,
3020 m32r_elf_howto_table[(int) r_type].name);
3021 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3022 ret = FALSE;
3023 continue;
3024 }
3025 }
3026 /* Fall through. */
3027
3028 default : /* OLD_M32R_RELOC */
3029
3030 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3031 contents, offset,
3032 relocation, addend);
3033 goto check_reloc;
3034 }
3035
3036 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3037 contents, rel->r_offset,
3038 relocation, rel->r_addend);
3039
3040 }
3041
3042 check_reloc:
3043
3044 if (r != bfd_reloc_ok)
3045 {
3046 /* FIXME: This should be generic enough to go in a utility. */
3047 const char *name;
3048
3049 if (h != NULL)
3050 name = h->root.root.string;
3051 else
3052 {
3053 name = (bfd_elf_string_from_elf_section
3054 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3055 if (name == NULL || *name == '\0')
3056 name = bfd_section_name (input_bfd, sec);
3057 }
3058
3059 if (errmsg != NULL)
3060 goto common_error;
3061
3062 switch (r)
3063 {
3064 case bfd_reloc_overflow:
3065 if (! ((*info->callbacks->reloc_overflow)
3066 (info, (h ? &h->root : NULL), name, howto->name,
3067 (bfd_vma) 0, input_bfd, input_section, offset)))
3068 return FALSE;
3069 break;
3070
3071 case bfd_reloc_undefined:
3072 if (! ((*info->callbacks->undefined_symbol)
3073 (info, name, input_bfd, input_section,
3074 offset, TRUE)))
3075 return FALSE;
3076 break;
3077
3078 case bfd_reloc_outofrange:
3079 errmsg = _("internal error: out of range error");
3080 goto common_error;
3081
3082 case bfd_reloc_notsupported:
3083 errmsg = _("internal error: unsupported relocation error");
3084 goto common_error;
3085
3086 case bfd_reloc_dangerous:
3087 errmsg = _("internal error: dangerous error");
3088 goto common_error;
3089
3090 default:
3091 errmsg = _("internal error: unknown error");
3092 /* fall through */
3093
3094 common_error:
3095 if (!((*info->callbacks->warning)
3096 (info, errmsg, name, input_bfd, input_section,
3097 offset)))
3098 return FALSE;
3099 break;
3100 }
3101 }
3102 }
3103
3104 return ret;
3105 }
3106
3107 /* Finish up dynamic symbol handling. We set the contents of various
3108 dynamic sections here. */
3109
3110 static bfd_boolean
3111 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3112 struct bfd_link_info *info,
3113 struct elf_link_hash_entry *h,
3114 Elf_Internal_Sym *sym)
3115 {
3116 struct elf_m32r_link_hash_table *htab;
3117 bfd_byte *loc;
3118
3119 #ifdef DEBUG_PIC
3120 printf ("m32r_elf_finish_dynamic_symbol()\n");
3121 #endif
3122
3123 htab = m32r_elf_hash_table (info);
3124 if (htab == NULL)
3125 return FALSE;
3126
3127 if (h->plt.offset != (bfd_vma) -1)
3128 {
3129 asection *splt;
3130 asection *sgot;
3131 asection *srela;
3132
3133 bfd_vma plt_index;
3134 bfd_vma got_offset;
3135 Elf_Internal_Rela rela;
3136
3137 /* This symbol has an entry in the procedure linkage table. Set
3138 it up. */
3139
3140 BFD_ASSERT (h->dynindx != -1);
3141
3142 splt = htab->splt;
3143 sgot = htab->sgotplt;
3144 srela = htab->srelplt;
3145 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3146
3147 /* Get the index in the procedure linkage table which
3148 corresponds to this symbol. This is the index of this symbol
3149 in all the symbols for which we are making plt entries. The
3150 first entry in the procedure linkage table is reserved. */
3151 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3152
3153 /* Get the offset into the .got table of the entry that
3154 corresponds to this function. Each .got entry is 4 bytes.
3155 The first three are reserved. */
3156 got_offset = (plt_index + 3) * 4;
3157
3158 /* Fill in the entry in the procedure linkage table. */
3159 if (! bfd_link_pic (info))
3160 {
3161 bfd_put_32 (output_bfd,
3162 (PLT_ENTRY_WORD0b
3163 + (((sgot->output_section->vma
3164 + sgot->output_offset
3165 + got_offset) >> 16) & 0xffff)),
3166 splt->contents + h->plt.offset);
3167 bfd_put_32 (output_bfd,
3168 (PLT_ENTRY_WORD1b
3169 + ((sgot->output_section->vma
3170 + sgot->output_offset
3171 + got_offset) & 0xffff)),
3172 splt->contents + h->plt.offset + 4);
3173 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3174 splt->contents + h->plt.offset + 8);
3175 bfd_put_32 (output_bfd,
3176 (PLT_ENTRY_WORD3
3177 + plt_index * sizeof (Elf32_External_Rela)),
3178 splt->contents + h->plt.offset + 12);
3179 bfd_put_32 (output_bfd,
3180 (PLT_ENTRY_WORD4
3181 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3182 splt->contents + h->plt.offset + 16);
3183 }
3184 else
3185 {
3186 bfd_put_32 (output_bfd,
3187 PLT_ENTRY_WORD0 + got_offset,
3188 splt->contents + h->plt.offset);
3189 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3190 splt->contents + h->plt.offset + 4);
3191 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3192 splt->contents + h->plt.offset + 8);
3193 bfd_put_32 (output_bfd,
3194 (PLT_ENTRY_WORD3
3195 + plt_index * sizeof (Elf32_External_Rela)),
3196 splt->contents + h->plt.offset + 12);
3197 bfd_put_32 (output_bfd,
3198 (PLT_ENTRY_WORD4
3199 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3200 splt->contents + h->plt.offset + 16);
3201 }
3202
3203 /* Fill in the entry in the global offset table. */
3204 bfd_put_32 (output_bfd,
3205 (splt->output_section->vma
3206 + splt->output_offset
3207 + h->plt.offset
3208 + 12), /* same offset */
3209 sgot->contents + got_offset);
3210
3211 /* Fill in the entry in the .rela.plt section. */
3212 rela.r_offset = (sgot->output_section->vma
3213 + sgot->output_offset
3214 + got_offset);
3215 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3216 rela.r_addend = 0;
3217 loc = srela->contents;
3218 loc += plt_index * sizeof (Elf32_External_Rela);
3219 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3220
3221 if (!h->def_regular)
3222 {
3223 /* Mark the symbol as undefined, rather than as defined in
3224 the .plt section. Leave the value alone. */
3225 sym->st_shndx = SHN_UNDEF;
3226 }
3227 }
3228
3229 if (h->got.offset != (bfd_vma) -1)
3230 {
3231 asection *sgot;
3232 asection *srela;
3233 Elf_Internal_Rela rela;
3234
3235 /* This symbol has an entry in the global offset table. Set it
3236 up. */
3237
3238 sgot = htab->sgot;
3239 srela = htab->srelgot;
3240 BFD_ASSERT (sgot != NULL && srela != NULL);
3241
3242 rela.r_offset = (sgot->output_section->vma
3243 + sgot->output_offset
3244 + (h->got.offset &~ 1));
3245
3246 /* If this is a -Bsymbolic link, and the symbol is defined
3247 locally, we just want to emit a RELATIVE reloc. Likewise if
3248 the symbol was forced to be local because of a version file.
3249 The entry in the global offset table will already have been
3250 initialized in the relocate_section function. */
3251 if (bfd_link_pic (info)
3252 && (info->symbolic
3253 || h->dynindx == -1
3254 || h->forced_local)
3255 && h->def_regular)
3256 {
3257 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3258 rela.r_addend = (h->root.u.def.value
3259 + h->root.u.def.section->output_section->vma
3260 + h->root.u.def.section->output_offset);
3261 }
3262 else
3263 {
3264 BFD_ASSERT ((h->got.offset & 1) == 0);
3265 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3266 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3267 rela.r_addend = 0;
3268 }
3269
3270 loc = srela->contents;
3271 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3272 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3273 ++srela->reloc_count;
3274 }
3275
3276 if (h->needs_copy)
3277 {
3278 asection *s;
3279 Elf_Internal_Rela rela;
3280
3281 /* This symbols needs a copy reloc. Set it up. */
3282
3283 BFD_ASSERT (h->dynindx != -1
3284 && (h->root.type == bfd_link_hash_defined
3285 || h->root.type == bfd_link_hash_defweak));
3286
3287 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
3288 BFD_ASSERT (s != NULL);
3289
3290 rela.r_offset = (h->root.u.def.value
3291 + h->root.u.def.section->output_section->vma
3292 + h->root.u.def.section->output_offset);
3293 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3294 rela.r_addend = 0;
3295 loc = s->contents;
3296 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3297 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3298 ++s->reloc_count;
3299 }
3300
3301 /* Mark some specially defined symbols as absolute. */
3302 if (h == htab->root.hdynamic || h == htab->root.hgot)
3303 sym->st_shndx = SHN_ABS;
3304
3305 return TRUE;
3306 }
3307
3308
3309 /* Finish up the dynamic sections. */
3310
3311 static bfd_boolean
3312 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3313 struct bfd_link_info *info)
3314 {
3315 struct elf_m32r_link_hash_table *htab;
3316 bfd *dynobj;
3317 asection *sdyn;
3318 asection *sgot;
3319
3320 #ifdef DEBUG_PIC
3321 printf ("m32r_elf_finish_dynamic_sections()\n");
3322 #endif
3323
3324 htab = m32r_elf_hash_table (info);
3325 if (htab == NULL)
3326 return FALSE;
3327
3328 dynobj = htab->root.dynobj;
3329
3330 sgot = htab->sgotplt;
3331 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3332
3333 if (htab->root.dynamic_sections_created)
3334 {
3335 asection *splt;
3336 Elf32_External_Dyn *dyncon, *dynconend;
3337
3338 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3339
3340 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3341 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3342
3343 for (; dyncon < dynconend; dyncon++)
3344 {
3345 Elf_Internal_Dyn dyn;
3346 asection *s;
3347
3348 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3349
3350 switch (dyn.d_tag)
3351 {
3352 default:
3353 break;
3354
3355 case DT_PLTGOT:
3356 s = htab->sgotplt;
3357 goto get_vma;
3358 case DT_JMPREL:
3359 s = htab->srelplt;
3360 get_vma:
3361 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3362 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3363 break;
3364
3365 case DT_PLTRELSZ:
3366 s = htab->srelplt;
3367 dyn.d_un.d_val = s->size;
3368 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3369 break;
3370
3371 case DT_RELASZ:
3372 /* My reading of the SVR4 ABI indicates that the
3373 procedure linkage table relocs (DT_JMPREL) should be
3374 included in the overall relocs (DT_RELA). This is
3375 what Solaris does. However, UnixWare can not handle
3376 that case. Therefore, we override the DT_RELASZ entry
3377 here to make it not include the JMPREL relocs. Since
3378 the linker script arranges for .rela.plt to follow all
3379 other relocation sections, we don't have to worry
3380 about changing the DT_RELA entry. */
3381 if (htab->srelplt != NULL)
3382 {
3383 s = htab->srelplt;
3384 dyn.d_un.d_val -= s->size;
3385 }
3386 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3387 break;
3388 }
3389 }
3390
3391 /* Fill in the first entry in the procedure linkage table. */
3392 splt = htab->splt;
3393 if (splt && splt->size > 0)
3394 {
3395 if (bfd_link_pic (info))
3396 {
3397 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3398 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3399 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3400 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3401 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3402 }
3403 else
3404 {
3405 unsigned long addr;
3406 /* addr = .got + 4 */
3407 addr = sgot->output_section->vma + sgot->output_offset + 4;
3408 bfd_put_32 (output_bfd,
3409 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3410 splt->contents);
3411 bfd_put_32 (output_bfd,
3412 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3413 splt->contents + 4);
3414 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3415 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3416 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3417 }
3418
3419 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3420 PLT_ENTRY_SIZE;
3421 }
3422 }
3423
3424 /* Fill in the first three entries in the global offset table. */
3425 if (sgot && sgot->size > 0)
3426 {
3427 if (sdyn == NULL)
3428 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3429 else
3430 bfd_put_32 (output_bfd,
3431 sdyn->output_section->vma + sdyn->output_offset,
3432 sgot->contents);
3433 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3434 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3435
3436 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3437 }
3438
3439 return TRUE;
3440 }
3441
3442 \f
3443 /* Set the right machine number. */
3444
3445 static bfd_boolean
3446 m32r_elf_object_p (bfd *abfd)
3447 {
3448 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3449 {
3450 default:
3451 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3452 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3453 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3454 }
3455 return TRUE;
3456 }
3457
3458 /* Store the machine number in the flags field. */
3459
3460 static void
3461 m32r_elf_final_write_processing (bfd *abfd,
3462 bfd_boolean linker ATTRIBUTE_UNUSED)
3463 {
3464 unsigned long val;
3465
3466 switch (bfd_get_mach (abfd))
3467 {
3468 default:
3469 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3470 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3471 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3472 }
3473
3474 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3475 elf_elfheader (abfd)->e_flags |= val;
3476 }
3477
3478 /* Function to keep M32R specific file flags. */
3479
3480 static bfd_boolean
3481 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3482 {
3483 BFD_ASSERT (!elf_flags_init (abfd)
3484 || elf_elfheader (abfd)->e_flags == flags);
3485
3486 elf_elfheader (abfd)->e_flags = flags;
3487 elf_flags_init (abfd) = TRUE;
3488 return TRUE;
3489 }
3490
3491 /* Merge backend specific data from an object file to the output
3492 object file when linking. */
3493
3494 static bfd_boolean
3495 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3496 {
3497 flagword out_flags;
3498 flagword in_flags;
3499
3500 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3501 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3502 return TRUE;
3503
3504 in_flags = elf_elfheader (ibfd)->e_flags;
3505 out_flags = elf_elfheader (obfd)->e_flags;
3506
3507 if (! elf_flags_init (obfd))
3508 {
3509 /* If the input is the default architecture then do not
3510 bother setting the flags for the output architecture,
3511 instead allow future merges to do this. If no future
3512 merges ever set these flags then they will retain their
3513 unitialised values, which surprise surprise, correspond
3514 to the default values. */
3515 if (bfd_get_arch_info (ibfd)->the_default)
3516 return TRUE;
3517
3518 elf_flags_init (obfd) = TRUE;
3519 elf_elfheader (obfd)->e_flags = in_flags;
3520
3521 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3522 && bfd_get_arch_info (obfd)->the_default)
3523 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3524 bfd_get_mach (ibfd));
3525
3526 return TRUE;
3527 }
3528
3529 /* Check flag compatibility. */
3530 if (in_flags == out_flags)
3531 return TRUE;
3532
3533 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3534 {
3535 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3536 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3537 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3538 {
3539 (*_bfd_error_handler)
3540 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3541
3542 bfd_set_error (bfd_error_bad_value);
3543 return FALSE;
3544 }
3545 }
3546
3547 return TRUE;
3548 }
3549
3550 /* Display the flags field. */
3551
3552 static bfd_boolean
3553 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3554 {
3555 FILE * file = (FILE *) ptr;
3556
3557 BFD_ASSERT (abfd != NULL && ptr != NULL);
3558
3559 _bfd_elf_print_private_bfd_data (abfd, ptr);
3560
3561 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3562
3563 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3564 {
3565 default:
3566 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3567 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3568 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3569 }
3570
3571 fputc ('\n', file);
3572
3573 return TRUE;
3574 }
3575
3576 static asection *
3577 m32r_elf_gc_mark_hook (asection *sec,
3578 struct bfd_link_info *info,
3579 Elf_Internal_Rela *rel,
3580 struct elf_link_hash_entry *h,
3581 Elf_Internal_Sym *sym)
3582 {
3583 if (h != NULL)
3584 switch (ELF32_R_TYPE (rel->r_info))
3585 {
3586 case R_M32R_GNU_VTINHERIT:
3587 case R_M32R_GNU_VTENTRY:
3588 case R_M32R_RELA_GNU_VTINHERIT:
3589 case R_M32R_RELA_GNU_VTENTRY:
3590 return NULL;
3591 }
3592
3593 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3594 }
3595
3596 static bfd_boolean
3597 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3598 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3599 asection *sec ATTRIBUTE_UNUSED,
3600 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3601 {
3602 /* Update the got entry reference counts for the section being removed. */
3603 Elf_Internal_Shdr *symtab_hdr;
3604 struct elf_link_hash_entry **sym_hashes;
3605 bfd_signed_vma *local_got_refcounts;
3606 const Elf_Internal_Rela *rel, *relend;
3607
3608 if (bfd_link_relocatable (info))
3609 return TRUE;
3610
3611 elf_section_data (sec)->local_dynrel = NULL;
3612
3613 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3614 sym_hashes = elf_sym_hashes (abfd);
3615 local_got_refcounts = elf_local_got_refcounts (abfd);
3616
3617 relend = relocs + sec->reloc_count;
3618 for (rel = relocs; rel < relend; rel++)
3619 {
3620 unsigned long r_symndx;
3621 struct elf_link_hash_entry *h = NULL;
3622
3623 r_symndx = ELF32_R_SYM (rel->r_info);
3624 if (r_symndx >= symtab_hdr->sh_info)
3625 {
3626 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3627 while (h->root.type == bfd_link_hash_indirect
3628 || h->root.type == bfd_link_hash_warning)
3629 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3630 }
3631
3632 switch (ELF32_R_TYPE (rel->r_info))
3633 {
3634 case R_M32R_GOT16_HI_ULO:
3635 case R_M32R_GOT16_HI_SLO:
3636 case R_M32R_GOT16_LO:
3637 case R_M32R_GOTOFF:
3638 case R_M32R_GOTOFF_HI_ULO:
3639 case R_M32R_GOTOFF_HI_SLO:
3640 case R_M32R_GOTOFF_LO:
3641 case R_M32R_GOT24:
3642 case R_M32R_GOTPC_HI_ULO:
3643 case R_M32R_GOTPC_HI_SLO:
3644 case R_M32R_GOTPC_LO:
3645 case R_M32R_GOTPC24:
3646 if (h != NULL)
3647 {
3648 if (h->got.refcount > 0)
3649 h->got.refcount--;
3650 }
3651 else
3652 {
3653 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3654 local_got_refcounts[r_symndx]--;
3655 }
3656 break;
3657
3658 case R_M32R_16_RELA:
3659 case R_M32R_24_RELA:
3660 case R_M32R_32_RELA:
3661 case R_M32R_REL32:
3662 case R_M32R_HI16_ULO_RELA:
3663 case R_M32R_HI16_SLO_RELA:
3664 case R_M32R_LO16_RELA:
3665 case R_M32R_SDA16_RELA:
3666 case R_M32R_10_PCREL_RELA:
3667 case R_M32R_18_PCREL_RELA:
3668 case R_M32R_26_PCREL_RELA:
3669 if (h != NULL)
3670 {
3671 struct elf_m32r_link_hash_entry *eh;
3672 struct elf_m32r_dyn_relocs **pp;
3673 struct elf_m32r_dyn_relocs *p;
3674
3675 if (!bfd_link_pic (info) && h->plt.refcount > 0)
3676 h->plt.refcount -= 1;
3677
3678 eh = (struct elf_m32r_link_hash_entry *) h;
3679
3680 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3681 if (p->sec == sec)
3682 {
3683 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3684 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3685 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3686 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3687 p->pc_count -= 1;
3688 p->count -= 1;
3689 if (p->count == 0)
3690 *pp = p->next;
3691 break;
3692 }
3693 }
3694 break;
3695
3696 case R_M32R_26_PLTREL:
3697 if (h != NULL)
3698 {
3699 if (h->plt.refcount > 0)
3700 h->plt.refcount--;
3701 }
3702 break;
3703
3704 default:
3705 break;
3706 }
3707 }
3708
3709 return TRUE;
3710 }
3711
3712 /* Look through the relocs for a section during the first phase.
3713 Since we don't do .gots or .plts, we just need to consider the
3714 virtual table relocs for gc. */
3715
3716 static bfd_boolean
3717 m32r_elf_check_relocs (bfd *abfd,
3718 struct bfd_link_info *info,
3719 asection *sec,
3720 const Elf_Internal_Rela *relocs)
3721 {
3722 Elf_Internal_Shdr *symtab_hdr;
3723 struct elf_link_hash_entry **sym_hashes;
3724 const Elf_Internal_Rela *rel;
3725 const Elf_Internal_Rela *rel_end;
3726 struct elf_m32r_link_hash_table *htab;
3727 bfd *dynobj;
3728 asection *sreloc;
3729
3730 if (bfd_link_relocatable (info))
3731 return TRUE;
3732
3733 sreloc = NULL;
3734 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3735 sym_hashes = elf_sym_hashes (abfd);
3736
3737 htab = m32r_elf_hash_table (info);
3738 if (htab == NULL)
3739 return FALSE;
3740
3741 dynobj = htab->root.dynobj;
3742
3743 rel_end = relocs + sec->reloc_count;
3744 for (rel = relocs; rel < rel_end; rel++)
3745 {
3746 int r_type;
3747 struct elf_link_hash_entry *h;
3748 unsigned long r_symndx;
3749
3750 r_symndx = ELF32_R_SYM (rel->r_info);
3751 r_type = ELF32_R_TYPE (rel->r_info);
3752 if (r_symndx < symtab_hdr->sh_info)
3753 h = NULL;
3754 else
3755 {
3756 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3757 while (h->root.type == bfd_link_hash_indirect
3758 || h->root.type == bfd_link_hash_warning)
3759 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3760
3761 /* PR15323, ref flags aren't set for references in the same
3762 object. */
3763 h->root.non_ir_ref = 1;
3764 }
3765
3766 /* Some relocs require a global offset table. */
3767 if (htab->sgot == NULL)
3768 {
3769 switch (r_type)
3770 {
3771 case R_M32R_GOT16_HI_ULO:
3772 case R_M32R_GOT16_HI_SLO:
3773 case R_M32R_GOTOFF:
3774 case R_M32R_GOTOFF_HI_ULO:
3775 case R_M32R_GOTOFF_HI_SLO:
3776 case R_M32R_GOTOFF_LO:
3777 case R_M32R_GOT16_LO:
3778 case R_M32R_GOTPC24:
3779 case R_M32R_GOTPC_HI_ULO:
3780 case R_M32R_GOTPC_HI_SLO:
3781 case R_M32R_GOTPC_LO:
3782 case R_M32R_GOT24:
3783 if (dynobj == NULL)
3784 htab->root.dynobj = dynobj = abfd;
3785 if (! create_got_section (dynobj, info))
3786 return FALSE;
3787 break;
3788
3789 default:
3790 break;
3791 }
3792 }
3793
3794 switch (r_type)
3795 {
3796 case R_M32R_GOT16_HI_ULO:
3797 case R_M32R_GOT16_HI_SLO:
3798 case R_M32R_GOT16_LO:
3799 case R_M32R_GOT24:
3800
3801 if (h != NULL)
3802 h->got.refcount += 1;
3803 else
3804 {
3805 bfd_signed_vma *local_got_refcounts;
3806
3807 /* This is a global offset table entry for a local
3808 symbol. */
3809 local_got_refcounts = elf_local_got_refcounts (abfd);
3810 if (local_got_refcounts == NULL)
3811 {
3812 bfd_size_type size;
3813
3814 size = symtab_hdr->sh_info;
3815 size *= sizeof (bfd_signed_vma);
3816 local_got_refcounts = bfd_zalloc (abfd, size);
3817 if (local_got_refcounts == NULL)
3818 return FALSE;
3819 elf_local_got_refcounts (abfd) = local_got_refcounts;
3820 }
3821 local_got_refcounts[r_symndx] += 1;
3822 }
3823 break;
3824
3825 case R_M32R_26_PLTREL:
3826 /* This symbol requires a procedure linkage table entry. We
3827 actually build the entry in adjust_dynamic_symbol,
3828 because this might be a case of linking PIC code without
3829 linking in any dynamic objects, in which case we don't
3830 need to generate a procedure linkage table after all. */
3831
3832 /* If this is a local symbol, we resolve it directly without
3833 creating a procedure linkage table entry. */
3834 if (h == NULL)
3835 continue;
3836
3837 if (h->forced_local)
3838 break;
3839
3840 h->needs_plt = 1;
3841 h->plt.refcount += 1;
3842 break;
3843
3844 case R_M32R_16_RELA:
3845 case R_M32R_24_RELA:
3846 case R_M32R_32_RELA:
3847 case R_M32R_REL32:
3848 case R_M32R_HI16_ULO_RELA:
3849 case R_M32R_HI16_SLO_RELA:
3850 case R_M32R_LO16_RELA:
3851 case R_M32R_SDA16_RELA:
3852 case R_M32R_10_PCREL_RELA:
3853 case R_M32R_18_PCREL_RELA:
3854 case R_M32R_26_PCREL_RELA:
3855
3856 if (h != NULL && !bfd_link_pic (info))
3857 {
3858 h->non_got_ref = 1;
3859 h->plt.refcount += 1;
3860 }
3861
3862 /* If we are creating a shared library, and this is a reloc
3863 against a global symbol, or a non PC relative reloc
3864 against a local symbol, then we need to copy the reloc
3865 into the shared library. However, if we are linking with
3866 -Bsymbolic, we do not need to copy a reloc against a
3867 global symbol which is defined in an object we are
3868 including in the link (i.e., DEF_REGULAR is set). At
3869 this point we have not seen all the input files, so it is
3870 possible that DEF_REGULAR is not set now but will be set
3871 later (it is never cleared). We account for that
3872 possibility below by storing information in the
3873 dyn_relocs field of the hash table entry. A similar
3874 situation occurs when creating shared libraries and symbol
3875 visibility changes render the symbol local.
3876
3877 If on the other hand, we are creating an executable, we
3878 may need to keep relocations for symbols satisfied by a
3879 dynamic library if we manage to avoid copy relocs for the
3880 symbol. */
3881 if ((bfd_link_pic (info)
3882 && (sec->flags & SEC_ALLOC) != 0
3883 && (( r_type != R_M32R_26_PCREL_RELA
3884 && r_type != R_M32R_18_PCREL_RELA
3885 && r_type != R_M32R_10_PCREL_RELA
3886 && r_type != R_M32R_REL32)
3887 || (h != NULL
3888 && (! info->symbolic
3889 || h->root.type == bfd_link_hash_defweak
3890 || !h->def_regular))))
3891 || (!bfd_link_pic (info)
3892 && (sec->flags & SEC_ALLOC) != 0
3893 && h != NULL
3894 && (h->root.type == bfd_link_hash_defweak
3895 || !h->def_regular)))
3896 {
3897 struct elf_m32r_dyn_relocs *p;
3898 struct elf_m32r_dyn_relocs **head;
3899
3900 if (dynobj == NULL)
3901 htab->root.dynobj = dynobj = abfd;
3902
3903 /* When creating a shared object, we must copy these
3904 relocs into the output file. We create a reloc
3905 section in dynobj and make room for the reloc. */
3906 if (sreloc == NULL)
3907 {
3908 sreloc = _bfd_elf_make_dynamic_reloc_section
3909 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3910
3911 if (sreloc == NULL)
3912 return FALSE;
3913 }
3914
3915 /* If this is a global symbol, we count the number of
3916 relocations we need for this symbol. */
3917 if (h != NULL)
3918 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3919 else
3920 {
3921 /* Track dynamic relocs needed for local syms too. */
3922 asection *s;
3923 void *vpp;
3924 Elf_Internal_Sym *isym;
3925
3926 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3927 abfd, r_symndx);
3928 if (isym == NULL)
3929 return FALSE;
3930
3931 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3932 if (s == NULL)
3933 s = sec;
3934
3935 vpp = &elf_section_data (s)->local_dynrel;
3936 head = (struct elf_m32r_dyn_relocs **) vpp;
3937 }
3938
3939 p = *head;
3940 if (p == NULL || p->sec != sec)
3941 {
3942 bfd_size_type amt = sizeof (*p);
3943
3944 p = bfd_alloc (dynobj, amt);
3945 if (p == NULL)
3946 return FALSE;
3947 p->next = *head;
3948 *head = p;
3949 p->sec = sec;
3950 p->count = 0;
3951 p->pc_count = 0;
3952 }
3953
3954 p->count += 1;
3955 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3956 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3957 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3958 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3959 p->pc_count += 1;
3960 }
3961 break;
3962
3963 /* This relocation describes the C++ object vtable hierarchy.
3964 Reconstruct it for later use during GC. */
3965 case R_M32R_RELA_GNU_VTINHERIT:
3966 case R_M32R_GNU_VTINHERIT:
3967 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3968 return FALSE;
3969 break;
3970
3971 /* This relocation describes which C++ vtable entries are actually
3972 used. Record for later use during GC. */
3973 case R_M32R_GNU_VTENTRY:
3974 BFD_ASSERT (h != NULL);
3975 if (h != NULL
3976 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
3977 return FALSE;
3978 break;
3979 case R_M32R_RELA_GNU_VTENTRY:
3980 BFD_ASSERT (h != NULL);
3981 if (h != NULL
3982 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3983 return FALSE;
3984 break;
3985 }
3986 }
3987
3988 return TRUE;
3989 }
3990
3991 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
3992 {
3993 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3994 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3995 { NULL, 0, 0, 0, 0 }
3996 };
3997
3998 static enum elf_reloc_type_class
3999 m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4000 const asection *rel_sec ATTRIBUTE_UNUSED,
4001 const Elf_Internal_Rela *rela)
4002 {
4003 switch ((int) ELF32_R_TYPE (rela->r_info))
4004 {
4005 case R_M32R_RELATIVE: return reloc_class_relative;
4006 case R_M32R_JMP_SLOT: return reloc_class_plt;
4007 case R_M32R_COPY: return reloc_class_copy;
4008 default: return reloc_class_normal;
4009 }
4010 }
4011 \f
4012 #define ELF_ARCH bfd_arch_m32r
4013 #define ELF_TARGET_ID M32R_ELF_DATA
4014 #define ELF_MACHINE_CODE EM_M32R
4015 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4016 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4017
4018 #define TARGET_BIG_SYM m32r_elf32_vec
4019 #define TARGET_BIG_NAME "elf32-m32r"
4020 #define TARGET_LITTLE_SYM m32r_elf32_le_vec
4021 #define TARGET_LITTLE_NAME "elf32-m32rle"
4022
4023 #define elf_info_to_howto m32r_info_to_howto
4024 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4025 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4026 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4027 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4028 #define elf_backend_relocate_section m32r_elf_relocate_section
4029 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4030 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4031 #define elf_backend_check_relocs m32r_elf_check_relocs
4032
4033 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4034 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4035 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4036 #define elf_backend_omit_section_dynsym \
4037 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4038 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4039 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4040 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4041 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4042 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4043
4044 #define elf_backend_can_gc_sections 1
4045 /*#if !USE_REL
4046 #define elf_backend_rela_normal 1
4047 #endif*/
4048 #define elf_backend_can_refcount 1
4049 #define elf_backend_want_got_plt 1
4050 #define elf_backend_plt_readonly 1
4051 #define elf_backend_want_plt_sym 0
4052 #define elf_backend_got_header_size 12
4053
4054 #define elf_backend_may_use_rel_p 1
4055 #ifdef USE_M32R_OLD_RELOC
4056 #define elf_backend_default_use_rela_p 0
4057 #define elf_backend_may_use_rela_p 0
4058 #else
4059 #define elf_backend_default_use_rela_p 1
4060 #define elf_backend_may_use_rela_p 1
4061 #endif
4062
4063 #define elf_backend_object_p m32r_elf_object_p
4064 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4065 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4066 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4067 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4068 #define elf_backend_special_sections m32r_elf_special_sections
4069
4070 #include "elf32-target.h"
4071
4072 #undef ELF_MAXPAGESIZE
4073 #define ELF_MAXPAGESIZE 0x1000
4074
4075 #undef TARGET_BIG_SYM
4076 #define TARGET_BIG_SYM m32r_elf32_linux_vec
4077 #undef TARGET_BIG_NAME
4078 #define TARGET_BIG_NAME "elf32-m32r-linux"
4079 #undef TARGET_LITTLE_SYM
4080 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
4081 #undef TARGET_LITTLE_NAME
4082 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4083 #undef elf32_bed
4084 #define elf32_bed elf32_m32r_lin_bed
4085
4086 #include "elf32-target.h"
4087
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