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