6a8c5bfdaa2e682fcdd3290f57d2b15e31a6b756
[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 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 2 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, MA 02110-1301, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/m32r.h"
26
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
29
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
33 to work with. */
34 /* #define USE_REL 1
35
36 #ifndef USE_REL
37 #define USE_REL 0
38 #endif */
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
40
41 /* Functions for the M32R ELF linker. */
42
43 /* The name of the dynamic interpreter. This is put in the .interp
44 section. */
45
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
47
48 /* The nop opcode we use. */
49
50 #define M32R_NOP 0x7000f000
51
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
53
54 /* The size in bytes of an entry in the procedure linkage table. */
55
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
58
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
62
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
68
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
74
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
82
83
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
85
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 reloc_howto_type *howto,
89 asection *input_section,
90 bfd_byte *data,
91 bfd_vma offset,
92 asection *symbol_section ATTRIBUTE_UNUSED,
93 bfd_vma symbol_value,
94 bfd_vma addend)
95 {
96 bfd_signed_vma relocation;
97 unsigned long x;
98 bfd_reloc_status_type status;
99
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
103
104 relocation = symbol_value + addend;
105 /* Make it pc relative. */
106 relocation -= (input_section->output_section->vma
107 + input_section->output_offset);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation -= (offset & -(bfd_vma) 4);
111
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
114 else
115 status = bfd_reloc_ok;
116
117 x = bfd_get_16 (abfd, data + offset);
118 relocation >>= howto->rightshift;
119 relocation <<= howto->bitpos;
120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
122
123 return status;
124 }
125
126 /* Handle the R_M32R_10_PCREL reloc. */
127
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd * abfd,
130 arelent * reloc_entry,
131 asymbol * symbol,
132 void * data,
133 asection * input_section,
134 bfd * output_bfd,
135 char ** error_message ATTRIBUTE_UNUSED)
136 {
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd != NULL
139 && (symbol->flags & BSF_SECTION_SYM) == 0
140 && (! reloc_entry->howto->partial_inplace
141 || reloc_entry->addend == 0))
142 {
143 reloc_entry->address += input_section->output_offset;
144 return bfd_reloc_ok;
145 }
146
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
150
151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
152 input_section,
153 data, reloc_entry->address,
154 symbol->section,
155 (symbol->value
156 + symbol->section->output_section->vma
157 + symbol->section->output_offset),
158 reloc_entry->addend);
159 }
160
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
163
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd *input_bfd,
166 arelent *reloc_entry,
167 asymbol *symbol,
168 void * data,
169 asection *input_section,
170 bfd *output_bfd,
171 char **error_message ATTRIBUTE_UNUSED)
172 {
173 bfd_reloc_status_type ret;
174 bfd_vma relocation;
175 bfd_byte *inplace_address;
176
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd != NULL
181 && (symbol->flags & BSF_SECTION_SYM) == 0
182 && reloc_entry->addend == 0)
183 {
184 reloc_entry->address += input_section->output_offset;
185 return bfd_reloc_ok;
186 }
187
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
193
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196 return bfd_reloc_outofrange;
197
198 ret = bfd_reloc_ok;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
202
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
205 relocation = 0;
206 else
207 relocation = symbol->value;
208
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
211 {
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
214 }
215
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
218
219 #define DOIT(x) \
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
223
224 switch (reloc_entry->howto->size)
225 {
226 case 1:
227 {
228 short x = bfd_get_16 (input_bfd, inplace_address);
229 DOIT (x);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
231 }
232 break;
233 case 2:
234 {
235 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
236 DOIT (x);
237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
238 }
239 break;
240 default:
241 BFD_ASSERT (0);
242 }
243
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
246
247 return ret;
248 }
249
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
255
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 arelent *reloc_entry,
259 asymbol *symbol,
260 void * data ATTRIBUTE_UNUSED,
261 asection *input_section,
262 bfd *output_bfd,
263 char **error_message ATTRIBUTE_UNUSED)
264 {
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd != NULL
267 && (symbol->flags & BSF_SECTION_SYM) == 0
268 && (! reloc_entry->howto->partial_inplace
269 || reloc_entry->addend == 0))
270 {
271 reloc_entry->address += input_section->output_offset;
272 return bfd_reloc_ok;
273 }
274
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
278
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
281 abort ();
282 }
283
284 \f
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
300
301 struct m32r_hi16
302 {
303 struct m32r_hi16 *next;
304 bfd_byte *addr;
305 bfd_vma addend;
306 };
307
308 /* FIXME: This should not be a static variable. */
309
310 static struct m32r_hi16 *m32r_hi16_list;
311
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 arelent *reloc_entry,
315 asymbol *symbol,
316 void * data,
317 asection *input_section,
318 bfd *output_bfd,
319 char **error_message ATTRIBUTE_UNUSED)
320 {
321 bfd_reloc_status_type ret;
322 bfd_vma relocation;
323 struct m32r_hi16 *n;
324
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd != NULL
329 && (symbol->flags & BSF_SECTION_SYM) == 0
330 && reloc_entry->addend == 0)
331 {
332 reloc_entry->address += input_section->output_offset;
333 return bfd_reloc_ok;
334 }
335
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
338 return bfd_reloc_outofrange;
339
340 ret = bfd_reloc_ok;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
344
345 if (bfd_is_com_section (symbol->section))
346 relocation = 0;
347 else
348 relocation = symbol->value;
349
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
353
354 /* Save the information, and let LO16 do the actual relocation. */
355 n = bfd_malloc ((bfd_size_type) sizeof *n);
356 if (n == NULL)
357 return bfd_reloc_outofrange;
358 n->addr = (bfd_byte *) data + reloc_entry->address;
359 n->addend = relocation;
360 n->next = m32r_hi16_list;
361 m32r_hi16_list = n;
362
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
365
366 return ret;
367 }
368
369 /* Handle an M32R ELF HI16 reloc. */
370
371 static void
372 m32r_elf_relocate_hi16 (bfd *input_bfd,
373 int type,
374 Elf_Internal_Rela *relhi,
375 Elf_Internal_Rela *rello,
376 bfd_byte *contents,
377 bfd_vma addend)
378 {
379 unsigned long insn;
380 bfd_vma addlo;
381
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
383
384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385 if (type == R_M32R_HI16_SLO)
386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
387 else
388 addlo &= 0xffff;
389
390 addend += ((insn & 0xffff) << 16) + addlo;
391
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
395 addend += 0x10000;
396
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
400 }
401
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
405
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd *input_bfd,
408 arelent *reloc_entry,
409 asymbol *symbol,
410 void * data,
411 asection *input_section,
412 bfd *output_bfd,
413 char **error_message)
414 {
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd != NULL
419 && (symbol->flags & BSF_SECTION_SYM) == 0
420 && reloc_entry->addend == 0)
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425
426 if (m32r_hi16_list != NULL)
427 {
428 struct m32r_hi16 *l;
429
430 l = m32r_hi16_list;
431 while (l != NULL)
432 {
433 unsigned long insn;
434 unsigned long val;
435 unsigned long vallo;
436 struct m32r_hi16 *next;
437
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn = bfd_get_32 (input_bfd, l->addr);
442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val = ((insn & 0xffff) << 16) + vallo;
445 val += l->addend;
446
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
449 val += 0x10000;
450
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
453
454 next = l->next;
455 free (l);
456 l = next;
457 }
458
459 m32r_hi16_list = NULL;
460 }
461
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 input_section, output_bfd, error_message);
469 }
470
471 \f
472 static reloc_howto_type m32r_elf_howto_table[] =
473 {
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 32, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_bitfield, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
491 0, /* rightshift */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
503
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 24, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
533
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
537 slot for pc. */
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
541 again. */
542 HOWTO (R_M32R_10_PCREL, /* type */
543 2, /* rightshift */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
545 10, /* bitsize */
546 TRUE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_signed, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE, /* partial_inplace */
552 0xff, /* src_mask */
553 0xff, /* dst_mask */
554 TRUE), /* pcrel_offset */
555
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
575 again. */
576 HOWTO (R_M32R_26_PCREL, /* type */
577 2, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 26, /* bitsize */
580 TRUE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
589
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_dont, /* complain_on_overflow */
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
607 16, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
619
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
634
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
649
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 0, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 0, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 EMPTY_HOWTO (13),
681 EMPTY_HOWTO (14),
682 EMPTY_HOWTO (15),
683 EMPTY_HOWTO (16),
684 EMPTY_HOWTO (17),
685 EMPTY_HOWTO (18),
686 EMPTY_HOWTO (19),
687 EMPTY_HOWTO (20),
688 EMPTY_HOWTO (21),
689 EMPTY_HOWTO (22),
690 EMPTY_HOWTO (23),
691 EMPTY_HOWTO (24),
692 EMPTY_HOWTO (25),
693 EMPTY_HOWTO (26),
694 EMPTY_HOWTO (27),
695 EMPTY_HOWTO (28),
696 EMPTY_HOWTO (29),
697 EMPTY_HOWTO (30),
698 EMPTY_HOWTO (31),
699 EMPTY_HOWTO (32),
700
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 32, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
730
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 24, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
745
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 10, /* bitsize */
750 TRUE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE, /* partial_inplace */
756 0xff, /* src_mask */
757 0xff, /* dst_mask */
758 TRUE), /* pcrel_offset */
759
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 TRUE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
774
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 26, /* bitsize */
780 TRUE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
789
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
792 16, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
804
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
819
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
849
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
854 0, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0, /* dst_mask */
863 FALSE), /* pcrel_offset */
864
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 0, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0, /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
884 32, /* bitsize */
885 TRUE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_bitfield, /* complain_on_overflow */
888 bfd_elf_generic_reloc,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE), /* pcrel_offset */
894
895 EMPTY_HOWTO (46),
896 EMPTY_HOWTO (47),
897
898 /* Like R_M32R_24, but referring to the GOT table entry for
899 the symbol. */
900 HOWTO (R_M32R_GOT24, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 24, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_unsigned, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
913
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL, /* type */
917 2, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 24, /* bitsize */
920 TRUE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_signed, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE), /* pcrel_offset */
929
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_bitfield, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* Like R_M32R_24, but used when setting global offset table
950 entries. */
951 HOWTO (R_M32R_GLOB_DAT, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_bitfield, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
964
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 32, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
979
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
982 addend. */
983 HOWTO (R_M32R_RELATIVE, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 32, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
996
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 24, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_bitfield, /* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1010
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1012 table register. */
1013 HOWTO (R_M32R_GOTPC24, /* type */
1014 0, /* rightshift */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 24, /* bitsize */
1017 TRUE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_unsigned, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE), /* pcrel_offset */
1026
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028 the symbol. */
1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1042
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044 the symbol. */
1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1060 the symbol. */
1061 HOWTO (R_M32R_GOT16_LO, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 0, /* bitpos */
1067 complain_overflow_dont, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1074
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077 the symbol. */
1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 bfd_elf_generic_reloc, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE), /* pcrel_offset */
1091
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094 the symbol. */
1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE), /* pcrel_offset */
1108
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1111 the symbol. */
1112 HOWTO (R_M32R_GOTPC_LO, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE), /* pcrel_offset */
1125
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 bfd_elf_generic_reloc, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167 };
1168
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1170
1171 struct m32r_reloc_map
1172 {
1173 bfd_reloc_code_real_type bfd_reloc_val;
1174 unsigned char elf_reloc_val;
1175 };
1176
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1179 {
1180 { BFD_RELOC_NONE, R_M32R_NONE },
1181 { BFD_RELOC_16, R_M32R_16 },
1182 { BFD_RELOC_32, R_M32R_32 },
1183 { BFD_RELOC_M32R_24, R_M32R_24 },
1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1193 };
1194 #else
1195 static const struct m32r_reloc_map m32r_reloc_map[] =
1196 {
1197 { BFD_RELOC_NONE, R_M32R_NONE },
1198 { BFD_RELOC_16, R_M32R_16_RELA },
1199 { BFD_RELOC_32, R_M32R_32_RELA },
1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1211
1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1229 };
1230 #endif
1231
1232 static reloc_howto_type *
1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 bfd_reloc_code_real_type code)
1235 {
1236 unsigned int i;
1237
1238 #ifdef USE_M32R_OLD_RELOC
1239 for (i = 0;
1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1241 i++)
1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1244
1245 #else /* ! USE_M32R_OLD_RELOC */
1246
1247 for (i = 0;
1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1249 i++)
1250 if (m32r_reloc_map[i].bfd_reloc_val == code)
1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1252 #endif
1253
1254 return NULL;
1255 }
1256
1257 /* Set the howto pointer for an M32R ELF reloc. */
1258
1259 static void
1260 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1261 arelent *cache_ptr,
1262 Elf_Internal_Rela *dst)
1263 {
1264 unsigned int r_type;
1265
1266 r_type = ELF32_R_TYPE (dst->r_info);
1267 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1268 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1269 }
1270
1271 static void
1272 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1273 arelent *cache_ptr,
1274 Elf_Internal_Rela *dst)
1275 {
1276 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1277 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1278 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1279 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1280 }
1281
1282 \f
1283 /* Given a BFD section, try to locate the corresponding ELF section
1284 index. */
1285
1286 static bfd_boolean
1287 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1288 asection *sec,
1289 int *retval)
1290 {
1291 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1292 {
1293 *retval = SHN_M32R_SCOMMON;
1294 return TRUE;
1295 }
1296 return FALSE;
1297 }
1298
1299 /* M32R ELF uses two common sections. One is the usual one, and the other
1300 is for small objects. All the small objects are kept together, and then
1301 referenced via one register, which yields faster assembler code. It is
1302 up to the compiler to emit an instruction to load the register with
1303 _SDA_BASE. This is what we use for the small common section. This
1304 approach is copied from elf32-mips.c. */
1305 static asection m32r_elf_scom_section;
1306 static asymbol m32r_elf_scom_symbol;
1307 static asymbol *m32r_elf_scom_symbol_ptr;
1308
1309 /* Handle the special M32R section numbers that a symbol may use. */
1310
1311 static void
1312 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1313 {
1314 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1315
1316 switch (elfsym->internal_elf_sym.st_shndx)
1317 {
1318 case SHN_M32R_SCOMMON:
1319 if (m32r_elf_scom_section.name == NULL)
1320 {
1321 /* Initialize the small common section. */
1322 m32r_elf_scom_section.name = ".scommon";
1323 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1324 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1325 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1326 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1327 m32r_elf_scom_symbol.name = ".scommon";
1328 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1329 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1330 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1331 }
1332 asym->section = &m32r_elf_scom_section;
1333 asym->value = elfsym->internal_elf_sym.st_size;
1334 break;
1335 }
1336 }
1337
1338 /* Hook called by the linker routine which adds symbols from an object
1339 file. We must handle the special M32R section numbers here.
1340 We also keep watching for whether we need to create the sdata special
1341 linker sections. */
1342
1343 static bfd_boolean
1344 m32r_elf_add_symbol_hook (bfd *abfd,
1345 struct bfd_link_info *info,
1346 Elf_Internal_Sym *sym,
1347 const char **namep,
1348 flagword *flagsp ATTRIBUTE_UNUSED,
1349 asection **secp,
1350 bfd_vma *valp)
1351 {
1352 if (! info->relocatable
1353 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1354 && strcmp (*namep, "_SDA_BASE_") == 0
1355 && is_elf_hash_table (info->hash))
1356 {
1357 /* This is simpler than using _bfd_elf_create_linker_section
1358 (our needs are simpler than ppc's needs). Also
1359 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1360 section already exists a new one is created that follows it which
1361 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1362 struct elf_link_hash_entry *h;
1363 struct bfd_link_hash_entry *bh;
1364 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1365
1366 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1367 if (s == NULL)
1368 {
1369 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1370 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1371
1372 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1373 flags);
1374 if (s == NULL)
1375 return FALSE;
1376 bfd_set_section_alignment (abfd, s, 2);
1377 }
1378
1379 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1380 FALSE, FALSE, FALSE);
1381
1382 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1383 && !(_bfd_generic_link_add_one_symbol (info,
1384 abfd,
1385 "_SDA_BASE_",
1386 BSF_GLOBAL,
1387 s,
1388 (bfd_vma) 32768,
1389 NULL,
1390 FALSE,
1391 get_elf_backend_data (abfd)->collect,
1392 &bh)))
1393 return FALSE;
1394 h = (struct elf_link_hash_entry *) bh;
1395 h->type = STT_OBJECT;
1396 }
1397
1398 switch (sym->st_shndx)
1399 {
1400 case SHN_M32R_SCOMMON:
1401 *secp = bfd_make_section_old_way (abfd, ".scommon");
1402 (*secp)->flags |= SEC_IS_COMMON;
1403 *valp = sym->st_size;
1404 break;
1405 }
1406
1407 return TRUE;
1408 }
1409
1410 /* We have to figure out the SDA_BASE value, so that we can adjust the
1411 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1412 BFD. If we can't find it, we're stuck. We cache it in the ELF
1413 target data. We don't need to adjust the symbol value for an
1414 external symbol if we are producing relocatable output. */
1415
1416 static bfd_reloc_status_type
1417 m32r_elf_final_sda_base (bfd *output_bfd,
1418 struct bfd_link_info *info,
1419 const char **error_message,
1420 bfd_vma *psb)
1421 {
1422 if (elf_gp (output_bfd) == 0)
1423 {
1424 struct bfd_link_hash_entry *h;
1425
1426 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1427 if (h != NULL && h->type == bfd_link_hash_defined)
1428 elf_gp (output_bfd) = (h->u.def.value
1429 + h->u.def.section->output_section->vma
1430 + h->u.def.section->output_offset);
1431 else
1432 {
1433 /* Only get the error once. */
1434 *psb = elf_gp (output_bfd) = 4;
1435 *error_message =
1436 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1437 return bfd_reloc_dangerous;
1438 }
1439 }
1440 *psb = elf_gp (output_bfd);
1441 return bfd_reloc_ok;
1442 }
1443 \f
1444 /* Return size of a PLT entry. */
1445 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1446
1447 /* The m32r linker needs to keep track of the number of relocs that it
1448 decides to copy in check_relocs for each symbol. This is so that
1449 it can discard PC relative relocs if it doesn't need them when
1450 linking with -Bsymbolic. We store the information in a field
1451 extending the regular ELF linker hash table. */
1452
1453 /* This structure keeps track of the number of PC relative relocs we
1454 have copied for a given symbol. */
1455
1456 struct elf_m32r_pcrel_relocs_copied
1457 {
1458 /* Next section. */
1459 struct elf_m32r_pcrel_relocs_copied *next;
1460 /* A section in dynobj. */
1461 asection *section;
1462 /* Number of relocs copied in this section. */
1463 bfd_size_type count;
1464 };
1465
1466 /* The sh linker needs to keep track of the number of relocs that it
1467 decides to copy as dynamic relocs in check_relocs for each symbol.
1468 This is so that it can later discard them if they are found to be
1469 unnecessary. We store the information in a field extending the
1470 regular ELF linker hash table. */
1471
1472 struct elf_m32r_dyn_relocs
1473 {
1474 struct elf_m32r_dyn_relocs *next;
1475
1476 /* The input section of the reloc. */
1477 asection *sec;
1478
1479 /* Total number of relocs copied for the input section. */
1480 bfd_size_type count;
1481
1482 /* Number of pc-relative relocs copied for the input section. */
1483 bfd_size_type pc_count;
1484 };
1485
1486
1487 /* m32r ELF linker hash entry. */
1488
1489 struct elf_m32r_link_hash_entry
1490 {
1491 struct elf_link_hash_entry root;
1492
1493 /* Track dynamic relocs copied for this symbol. */
1494 struct elf_m32r_dyn_relocs *dyn_relocs;
1495 };
1496
1497 /* m32r ELF linker hash table. */
1498
1499 struct elf_m32r_link_hash_table
1500 {
1501 struct elf_link_hash_table root;
1502
1503 /* Short-cuts to get to dynamic linker sections. */
1504 asection *sgot;
1505 asection *sgotplt;
1506 asection *srelgot;
1507 asection *splt;
1508 asection *srelplt;
1509 asection *sdynbss;
1510 asection *srelbss;
1511
1512 /* Small local sym to section mapping cache. */
1513 struct sym_sec_cache sym_sec;
1514 };
1515
1516 /* Traverse an m32r ELF linker hash table. */
1517
1518 #define m32r_elf_link_hash_traverse(table, func, info) \
1519 (elf_link_hash_traverse \
1520 (&(table)->root, \
1521 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1522 (info)))
1523
1524 /* Get the m32r ELF linker hash table from a link_info structure. */
1525
1526
1527 #define m32r_elf_hash_table(p) \
1528 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1529
1530 /* Create an entry in an m32r ELF linker hash table. */
1531
1532 static struct bfd_hash_entry *
1533 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1534 struct bfd_hash_table *table,
1535 const char *string)
1536 {
1537 struct elf_m32r_link_hash_entry *ret =
1538 (struct elf_m32r_link_hash_entry *) entry;
1539
1540 /* Allocate the structure if it has not already been allocated by a
1541 subclass. */
1542 if (ret == NULL)
1543 ret = bfd_hash_allocate (table,
1544 sizeof (struct elf_m32r_link_hash_entry));
1545 if (ret == NULL)
1546 return NULL;
1547
1548 /* Call the allocation method of the superclass. */
1549 ret = ((struct elf_m32r_link_hash_entry *)
1550 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1551 table, string));
1552 if (ret != NULL)
1553 {
1554 struct elf_m32r_link_hash_entry *eh;
1555
1556 eh = (struct elf_m32r_link_hash_entry *) ret;
1557 eh->dyn_relocs = NULL;
1558 }
1559
1560 return (struct bfd_hash_entry *) ret;
1561 }
1562
1563 /* Create an m32r ELF linker hash table. */
1564
1565 static struct bfd_link_hash_table *
1566 m32r_elf_link_hash_table_create (bfd *abfd)
1567 {
1568 struct elf_m32r_link_hash_table *ret;
1569 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1570
1571 ret = bfd_malloc (amt);
1572 if (ret == NULL)
1573 return NULL;
1574
1575 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
1576 m32r_elf_link_hash_newfunc))
1577 {
1578 free (ret);
1579 return NULL;
1580 }
1581
1582 ret->sgot = NULL;
1583 ret->sgotplt = NULL;
1584 ret->srelgot = NULL;
1585 ret->splt = NULL;
1586 ret->srelplt = NULL;
1587 ret->sdynbss = NULL;
1588 ret->srelbss = NULL;
1589 ret->sym_sec.abfd = NULL;
1590
1591 return &ret->root.root;
1592 }
1593
1594 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1595 shortcuts to them in our hash table. */
1596
1597 static bfd_boolean
1598 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1599 {
1600 struct elf_m32r_link_hash_table *htab;
1601
1602 if (! _bfd_elf_create_got_section (dynobj, info))
1603 return FALSE;
1604
1605 htab = m32r_elf_hash_table (info);
1606 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1607 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1608 if (! htab->sgot || ! htab->sgotplt)
1609 abort ();
1610
1611 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1612 (SEC_ALLOC
1613 | SEC_LOAD
1614 | SEC_HAS_CONTENTS
1615 | SEC_IN_MEMORY
1616 | SEC_LINKER_CREATED
1617 | SEC_READONLY));
1618 if (htab->srelgot == NULL
1619 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1620 return FALSE;
1621
1622 return TRUE;
1623 }
1624
1625 /* Create dynamic sections when linking against a dynamic object. */
1626
1627 static bfd_boolean
1628 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1629 {
1630 struct elf_m32r_link_hash_table *htab;
1631 flagword flags, pltflags;
1632 asection *s;
1633 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1634 int ptralign = 2; /* 32bit */
1635
1636 htab = m32r_elf_hash_table (info);
1637
1638 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1639 .rel[a].bss sections. */
1640 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1641 | SEC_LINKER_CREATED);
1642
1643 pltflags = flags;
1644 pltflags |= SEC_CODE;
1645 if (bed->plt_not_loaded)
1646 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1647 if (bed->plt_readonly)
1648 pltflags |= SEC_READONLY;
1649
1650 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1651 htab->splt = s;
1652 if (s == NULL
1653 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1654 return FALSE;
1655
1656 if (bed->want_plt_sym)
1657 {
1658 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1659 .plt section. */
1660 struct bfd_link_hash_entry *bh = NULL;
1661 struct elf_link_hash_entry *h;
1662
1663 if (! (_bfd_generic_link_add_one_symbol
1664 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1665 (bfd_vma) 0, NULL, FALSE,
1666 get_elf_backend_data (abfd)->collect, &bh)))
1667 return FALSE;
1668 h = (struct elf_link_hash_entry *) bh;
1669 h->def_regular = 1;
1670 h->type = STT_OBJECT;
1671
1672 if (info->shared
1673 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1674 return FALSE;
1675 }
1676
1677 s = bfd_make_section_with_flags (abfd,
1678 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1679 flags | SEC_READONLY);
1680 htab->srelplt = s;
1681 if (s == NULL
1682 || ! bfd_set_section_alignment (abfd, s, ptralign))
1683 return FALSE;
1684
1685 if (htab->sgot == NULL
1686 && ! create_got_section (abfd, info))
1687 return FALSE;
1688
1689 {
1690 const char *secname;
1691 char *relname;
1692 flagword secflags;
1693 asection *sec;
1694
1695 for (sec = abfd->sections; sec; sec = sec->next)
1696 {
1697 secflags = bfd_get_section_flags (abfd, sec);
1698 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1699 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1700 continue;
1701 secname = bfd_get_section_name (abfd, sec);
1702 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1703 strcpy (relname, ".rela");
1704 strcat (relname, secname);
1705 if (bfd_get_section_by_name (abfd, secname))
1706 continue;
1707 s = bfd_make_section_with_flags (abfd, relname,
1708 flags | SEC_READONLY);
1709 if (s == NULL
1710 || ! bfd_set_section_alignment (abfd, s, ptralign))
1711 return FALSE;
1712 }
1713 }
1714
1715 if (bed->want_dynbss)
1716 {
1717 /* The .dynbss section is a place to put symbols which are defined
1718 by dynamic objects, are referenced by regular objects, and are
1719 not functions. We must allocate space for them in the process
1720 image and use a R_*_COPY reloc to tell the dynamic linker to
1721 initialize them at run time. The linker script puts the .dynbss
1722 section into the .bss section of the final image. */
1723 s = bfd_make_section_with_flags (abfd, ".dynbss",
1724 SEC_ALLOC | SEC_LINKER_CREATED);
1725 htab->sdynbss = s;
1726 if (s == NULL)
1727 return FALSE;
1728 /* The .rel[a].bss section holds copy relocs. This section is not
1729 normally needed. We need to create it here, though, so that the
1730 linker will map it to an output section. We can't just create it
1731 only if we need it, because we will not know whether we need it
1732 until we have seen all the input files, and the first time the
1733 main linker code calls BFD after examining all the input files
1734 (size_dynamic_sections) the input sections have already been
1735 mapped to the output sections. If the section turns out not to
1736 be needed, we can discard it later. We will never need this
1737 section when generating a shared object, since they do not use
1738 copy relocs. */
1739 if (! info->shared)
1740 {
1741 s = bfd_make_section_with_flags (abfd,
1742 (bed->default_use_rela_p
1743 ? ".rela.bss" : ".rel.bss"),
1744 flags | SEC_READONLY);
1745 htab->srelbss = s;
1746 if (s == NULL
1747 || ! bfd_set_section_alignment (abfd, s, ptralign))
1748 return FALSE;
1749 }
1750 }
1751
1752 return TRUE;
1753 }
1754
1755 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1756
1757 static void
1758 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1759 struct elf_link_hash_entry *dir,
1760 struct elf_link_hash_entry *ind)
1761 {
1762 struct elf_m32r_link_hash_entry * edir;
1763 struct elf_m32r_link_hash_entry * eind;
1764
1765 edir = (struct elf_m32r_link_hash_entry *) dir;
1766 eind = (struct elf_m32r_link_hash_entry *) ind;
1767
1768 if (eind->dyn_relocs != NULL)
1769 {
1770 if (edir->dyn_relocs != NULL)
1771 {
1772 struct elf_m32r_dyn_relocs **pp;
1773 struct elf_m32r_dyn_relocs *p;
1774
1775 /* Add reloc counts against the indirect sym to the direct sym
1776 list. Merge any entries against the same section. */
1777 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1778 {
1779 struct elf_m32r_dyn_relocs *q;
1780
1781 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1782 if (q->sec == p->sec)
1783 {
1784 q->pc_count += p->pc_count;
1785 q->count += p->count;
1786 *pp = p->next;
1787 break;
1788 }
1789 if (q == NULL)
1790 pp = &p->next;
1791 }
1792 *pp = edir->dyn_relocs;
1793 }
1794
1795 edir->dyn_relocs = eind->dyn_relocs;
1796 eind->dyn_relocs = NULL;
1797 }
1798
1799 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1800 }
1801
1802 \f
1803 /* Adjust a symbol defined by a dynamic object and referenced by a
1804 regular object. The current definition is in some section of the
1805 dynamic object, but we're not including those sections. We have to
1806 change the definition to something the rest of the link can
1807 understand. */
1808
1809 static bfd_boolean
1810 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1811 struct elf_link_hash_entry *h)
1812 {
1813 struct elf_m32r_link_hash_table *htab;
1814 struct elf_m32r_link_hash_entry *eh;
1815 struct elf_m32r_dyn_relocs *p;
1816 bfd *dynobj;
1817 asection *s;
1818 unsigned int power_of_two;
1819
1820 #ifdef DEBUG_PIC
1821 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1822 #endif
1823
1824 dynobj = elf_hash_table (info)->dynobj;
1825
1826 /* Make sure we know what is going on here. */
1827 BFD_ASSERT (dynobj != NULL
1828 && (h->needs_plt
1829 || h->u.weakdef != NULL
1830 || (h->def_dynamic
1831 && h->ref_regular
1832 && !h->def_regular)));
1833
1834 /* If this is a function, put it in the procedure linkage table. We
1835 will fill in the contents of the procedure linkage table later,
1836 when we know the address of the .got section. */
1837 if (h->type == STT_FUNC
1838 || h->needs_plt)
1839 {
1840 if (! info->shared
1841 && !h->def_dynamic
1842 && !h->ref_dynamic
1843 && h->root.type != bfd_link_hash_undefweak
1844 && h->root.type != bfd_link_hash_undefined)
1845 {
1846 /* This case can occur if we saw a PLT reloc in an input
1847 file, but the symbol was never referred to by a dynamic
1848 object. In such a case, we don't actually need to build
1849 a procedure linkage table, and we can just do a PCREL
1850 reloc instead. */
1851 h->plt.offset = (bfd_vma) -1;
1852 h->needs_plt = 0;
1853 }
1854
1855 return TRUE;
1856 }
1857 else
1858 h->plt.offset = (bfd_vma) -1;
1859
1860 /* If this is a weak symbol, and there is a real definition, the
1861 processor independent code will have arranged for us to see the
1862 real definition first, and we can just use the same value. */
1863 if (h->u.weakdef != NULL)
1864 {
1865 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1866 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1867 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1868 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1869 return TRUE;
1870 }
1871
1872 /* This is a reference to a symbol defined by a dynamic object which
1873 is not a function. */
1874
1875 /* If we are creating a shared library, we must presume that the
1876 only references to the symbol are via the global offset table.
1877 For such cases we need not do anything here; the relocations will
1878 be handled correctly by relocate_section. */
1879 if (info->shared)
1880 return TRUE;
1881
1882 /* If there are no references to this symbol that do not use the
1883 GOT, we don't need to generate a copy reloc. */
1884 if (!h->non_got_ref)
1885 return TRUE;
1886
1887 /* If -z nocopyreloc was given, we won't generate them either. */
1888 if (info->nocopyreloc)
1889 {
1890 h->non_got_ref = 0;
1891 return TRUE;
1892 }
1893
1894 eh = (struct elf_m32r_link_hash_entry *) h;
1895 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1896 {
1897 s = p->sec->output_section;
1898 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1899 break;
1900 }
1901
1902 /* If we didn't find any dynamic relocs in sections which needs the
1903 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1904 the copy reloc. */
1905 if (p == NULL)
1906 {
1907 h->non_got_ref = 0;
1908 return TRUE;
1909 }
1910
1911 if (h->size == 0)
1912 {
1913 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1914 h->root.root.string);
1915 return TRUE;
1916 }
1917
1918 /* We must allocate the symbol in our .dynbss section, which will
1919 become part of the .bss section of the executable. There will be
1920 an entry for this symbol in the .dynsym section. The dynamic
1921 object will contain position independent code, so all references
1922 from the dynamic object to this symbol will go through the global
1923 offset table. The dynamic linker will use the .dynsym entry to
1924 determine the address it must put in the global offset table, so
1925 both the dynamic object and the regular object will refer to the
1926 same memory location for the variable. */
1927
1928 htab = m32r_elf_hash_table (info);
1929 s = htab->sdynbss;
1930 BFD_ASSERT (s != NULL);
1931
1932 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1933 to copy the initial value out of the dynamic object and into the
1934 runtime process image. We need to remember the offset into the
1935 .rela.bss section we are going to use. */
1936 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1937 {
1938 asection *srel;
1939
1940 srel = htab->srelbss;
1941 BFD_ASSERT (srel != NULL);
1942 srel->size += sizeof (Elf32_External_Rela);
1943 h->needs_copy = 1;
1944 }
1945
1946 /* We need to figure out the alignment required for this symbol. I
1947 have no idea how ELF linkers handle this. */
1948 power_of_two = bfd_log2 (h->size);
1949 if (power_of_two > 3)
1950 power_of_two = 3;
1951
1952 /* Apply the required alignment. */
1953 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1954 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1955 {
1956 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1957 return FALSE;
1958 }
1959
1960 /* Define the symbol as being at this point in the section. */
1961 h->root.u.def.section = s;
1962 h->root.u.def.value = s->size;
1963
1964 /* Increment the section size to make room for the symbol. */
1965 s->size += h->size;
1966
1967 return TRUE;
1968 }
1969
1970 /* Allocate space in .plt, .got and associated reloc sections for
1971 dynamic relocs. */
1972
1973 static bfd_boolean
1974 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1975 {
1976 struct bfd_link_info *info;
1977 struct elf_m32r_link_hash_table *htab;
1978 struct elf_m32r_link_hash_entry *eh;
1979 struct elf_m32r_dyn_relocs *p;
1980
1981 if (h->root.type == bfd_link_hash_indirect)
1982 return TRUE;
1983
1984 if (h->root.type == bfd_link_hash_warning)
1985 /* When warning symbols are created, they **replace** the "real"
1986 entry in the hash table, thus we never get to see the real
1987 symbol in a hash traversal. So look at it now. */
1988 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1989
1990 info = (struct bfd_link_info *) inf;
1991 htab = m32r_elf_hash_table (info);
1992
1993 eh = (struct elf_m32r_link_hash_entry *) h;
1994
1995 if (htab->root.dynamic_sections_created
1996 && h->plt.refcount > 0)
1997 {
1998 /* Make sure this symbol is output as a dynamic symbol.
1999 Undefined weak syms won't yet be marked as dynamic. */
2000 if (h->dynindx == -1
2001 && !h->forced_local)
2002 {
2003 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2004 return FALSE;
2005 }
2006
2007 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2008 {
2009 asection *s = htab->splt;
2010
2011 /* If this is the first .plt entry, make room for the special
2012 first entry. */
2013 if (s->size == 0)
2014 s->size += PLT_ENTRY_SIZE;
2015
2016 h->plt.offset = s->size;
2017
2018 /* If this symbol is not defined in a regular file, and we are
2019 not generating a shared library, then set the symbol to this
2020 location in the .plt. This is required to make function
2021 pointers compare as equal between the normal executable and
2022 the shared library. */
2023 if (! info->shared
2024 && !h->def_regular)
2025 {
2026 h->root.u.def.section = s;
2027 h->root.u.def.value = h->plt.offset;
2028 }
2029
2030 /* Make room for this entry. */
2031 s->size += PLT_ENTRY_SIZE;
2032
2033 /* We also need to make an entry in the .got.plt section, which
2034 will be placed in the .got section by the linker script. */
2035 htab->sgotplt->size += 4;
2036
2037 /* We also need to make an entry in the .rel.plt section. */
2038 htab->srelplt->size += sizeof (Elf32_External_Rela);
2039 }
2040 else
2041 {
2042 h->plt.offset = (bfd_vma) -1;
2043 h->needs_plt = 0;
2044 }
2045 }
2046 else
2047 {
2048 h->plt.offset = (bfd_vma) -1;
2049 h->needs_plt = 0;
2050 }
2051
2052 if (h->got.refcount > 0)
2053 {
2054 asection *s;
2055 bfd_boolean dyn;
2056
2057 /* Make sure this symbol is output as a dynamic symbol.
2058 Undefined weak syms won't yet be marked as dynamic. */
2059 if (h->dynindx == -1
2060 && !h->forced_local)
2061 {
2062 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2063 return FALSE;
2064 }
2065
2066 s = htab->sgot;
2067
2068 h->got.offset = s->size;
2069 s->size += 4;
2070 dyn = htab->root.dynamic_sections_created;
2071 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2072 htab->srelgot->size += sizeof (Elf32_External_Rela);
2073 }
2074 else
2075 h->got.offset = (bfd_vma) -1;
2076
2077 if (eh->dyn_relocs == NULL)
2078 return TRUE;
2079
2080 /* In the shared -Bsymbolic case, discard space allocated for
2081 dynamic pc-relative relocs against symbols which turn out to be
2082 defined in regular objects. For the normal shared case, discard
2083 space for pc-relative relocs that have become local due to symbol
2084 visibility changes. */
2085
2086 if (info->shared)
2087 {
2088 if (h->def_regular
2089 && (h->forced_local
2090 || info->symbolic))
2091 {
2092 struct elf_m32r_dyn_relocs **pp;
2093
2094 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2095 {
2096 p->count -= p->pc_count;
2097 p->pc_count = 0;
2098 if (p->count == 0)
2099 *pp = p->next;
2100 else
2101 pp = &p->next;
2102 }
2103 }
2104
2105 /* Also discard relocs on undefined weak syms with non-default
2106 visibility. */
2107 if (eh->dyn_relocs != NULL
2108 && h->root.type == bfd_link_hash_undefweak)
2109 {
2110 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2111 eh->dyn_relocs = NULL;
2112
2113 /* Make sure undefined weak symbols are output as a dynamic
2114 symbol in PIEs. */
2115 else if (h->dynindx == -1
2116 && !h->forced_local)
2117 {
2118 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2119 return FALSE;
2120 }
2121 }
2122 }
2123 else
2124 {
2125 /* For the non-shared case, discard space for relocs against
2126 symbols which turn out to need copy relocs or are not
2127 dynamic. */
2128
2129 if (!h->non_got_ref
2130 && ((h->def_dynamic
2131 && !h->def_regular)
2132 || (htab->root.dynamic_sections_created
2133 && (h->root.type == bfd_link_hash_undefweak
2134 || h->root.type == bfd_link_hash_undefined))))
2135 {
2136 /* Make sure this symbol is output as a dynamic symbol.
2137 Undefined weak syms won't yet be marked as dynamic. */
2138 if (h->dynindx == -1
2139 && !h->forced_local)
2140 {
2141 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2142 return FALSE;
2143 }
2144
2145 /* If that succeeded, we know we'll be keeping all the
2146 relocs. */
2147 if (h->dynindx != -1)
2148 goto keep;
2149 }
2150
2151 eh->dyn_relocs = NULL;
2152
2153 keep: ;
2154 }
2155
2156 /* Finally, allocate space. */
2157 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2158 {
2159 asection *sreloc = elf_section_data (p->sec)->sreloc;
2160 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2161 }
2162
2163 return TRUE;
2164 }
2165
2166 /* Find any dynamic relocs that apply to read-only sections. */
2167
2168 static bfd_boolean
2169 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2170 {
2171 struct elf_m32r_link_hash_entry *eh;
2172 struct elf_m32r_dyn_relocs *p;
2173
2174 if (h->root.type == bfd_link_hash_warning)
2175 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2176
2177 eh = (struct elf_m32r_link_hash_entry *) h;
2178 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2179 {
2180 asection *s = p->sec->output_section;
2181
2182 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2183 {
2184 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2185
2186 info->flags |= DF_TEXTREL;
2187
2188 /* Not an error, just cut short the traversal. */
2189 return FALSE;
2190 }
2191 }
2192 return TRUE;
2193 }
2194
2195 /* Set the sizes of the dynamic sections. */
2196
2197 static bfd_boolean
2198 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2199 struct bfd_link_info *info)
2200 {
2201 struct elf_m32r_link_hash_table *htab;
2202 bfd *dynobj;
2203 asection *s;
2204 bfd_boolean relocs;
2205 bfd *ibfd;
2206
2207 #ifdef DEBUG_PIC
2208 printf ("m32r_elf_size_dynamic_sections()\n");
2209 #endif
2210
2211 htab = m32r_elf_hash_table (info);
2212 dynobj = htab->root.dynobj;
2213 BFD_ASSERT (dynobj != NULL);
2214
2215 if (htab->root.dynamic_sections_created)
2216 {
2217 /* Set the contents of the .interp section to the interpreter. */
2218 if (info->executable)
2219 {
2220 s = bfd_get_section_by_name (dynobj, ".interp");
2221 BFD_ASSERT (s != NULL);
2222 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2223 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2224 }
2225 }
2226
2227 /* Set up .got offsets for local syms, and space for local dynamic
2228 relocs. */
2229 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2230 {
2231 bfd_signed_vma *local_got;
2232 bfd_signed_vma *end_local_got;
2233 bfd_size_type locsymcount;
2234 Elf_Internal_Shdr *symtab_hdr;
2235 asection *srel;
2236
2237 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2238 continue;
2239
2240 for (s = ibfd->sections; s != NULL; s = s->next)
2241 {
2242 struct elf_m32r_dyn_relocs *p;
2243
2244 for (p = ((struct elf_m32r_dyn_relocs *)
2245 elf_section_data (s)->local_dynrel);
2246 p != NULL;
2247 p = p->next)
2248 {
2249 if (! bfd_is_abs_section (p->sec)
2250 && bfd_is_abs_section (p->sec->output_section))
2251 {
2252 /* Input section has been discarded, either because
2253 it is a copy of a linkonce section or due to
2254 linker script /DISCARD/, so we'll be discarding
2255 the relocs too. */
2256 }
2257 else if (p->count != 0)
2258 {
2259 srel = elf_section_data (p->sec)->sreloc;
2260 srel->size += p->count * sizeof (Elf32_External_Rela);
2261 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2262 info->flags |= DF_TEXTREL;
2263 }
2264 }
2265 }
2266
2267 local_got = elf_local_got_refcounts (ibfd);
2268 if (!local_got)
2269 continue;
2270
2271 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2272 locsymcount = symtab_hdr->sh_info;
2273 end_local_got = local_got + locsymcount;
2274 s = htab->sgot;
2275 srel = htab->srelgot;
2276 for (; local_got < end_local_got; ++local_got)
2277 {
2278 if (*local_got > 0)
2279 {
2280 *local_got = s->size;
2281 s->size += 4;
2282 if (info->shared)
2283 srel->size += sizeof (Elf32_External_Rela);
2284 }
2285 else
2286 *local_got = (bfd_vma) -1;
2287 }
2288 }
2289
2290 /* Allocate global sym .plt and .got entries, and space for global
2291 sym dynamic relocs. */
2292 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2293
2294 /* We now have determined the sizes of the various dynamic sections.
2295 Allocate memory for them. */
2296 relocs = FALSE;
2297 for (s = dynobj->sections; s != NULL; s = s->next)
2298 {
2299 if ((s->flags & SEC_LINKER_CREATED) == 0)
2300 continue;
2301
2302 if (s == htab->splt
2303 || s == htab->sgot
2304 || s == htab->sgotplt
2305 || s == htab->sdynbss)
2306 {
2307 /* Strip this section if we don't need it; see the
2308 comment below. */
2309 }
2310 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2311 {
2312 if (s->size != 0 && s != htab->srelplt)
2313 relocs = TRUE;
2314
2315 /* We use the reloc_count field as a counter if we need
2316 to copy relocs into the output file. */
2317 s->reloc_count = 0;
2318 }
2319 else
2320 /* It's not one of our sections, so don't allocate space. */
2321 continue;
2322
2323 if (s->size == 0)
2324 {
2325 /* If we don't need this section, strip it from the
2326 output file. This is mostly to handle .rela.bss and
2327 .rela.plt. We must create both sections in
2328 create_dynamic_sections, because they must be created
2329 before the linker maps input sections to output
2330 sections. The linker does that before
2331 adjust_dynamic_symbol is called, and it is that
2332 function which decides whether anything needs to go
2333 into these sections. */
2334 s->flags |= SEC_EXCLUDE;
2335 continue;
2336 }
2337
2338 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2339 continue;
2340
2341 /* Allocate memory for the section contents. We use bfd_zalloc
2342 here in case unused entries are not reclaimed before the
2343 section's contents are written out. This should not happen,
2344 but this way if it does, we get a R_M32R_NONE reloc instead
2345 of garbage. */
2346 s->contents = bfd_zalloc (dynobj, s->size);
2347 if (s->contents == NULL)
2348 return FALSE;
2349 }
2350
2351 if (htab->root.dynamic_sections_created)
2352 {
2353 /* Add some entries to the .dynamic section. We fill in the
2354 values later, in m32r_elf_finish_dynamic_sections, but we
2355 must add the entries now so that we get the correct size for
2356 the .dynamic section. The DT_DEBUG entry is filled in by the
2357 dynamic linker and used by the debugger. */
2358 #define add_dynamic_entry(TAG, VAL) \
2359 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2360
2361 if (info->executable)
2362 {
2363 if (! add_dynamic_entry (DT_DEBUG, 0))
2364 return FALSE;
2365 }
2366
2367 if (htab->splt->size != 0)
2368 {
2369 if (! add_dynamic_entry (DT_PLTGOT, 0)
2370 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2371 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2372 || ! add_dynamic_entry (DT_JMPREL, 0))
2373 return FALSE;
2374 }
2375
2376 if (relocs)
2377 {
2378 if (! add_dynamic_entry (DT_RELA, 0)
2379 || ! add_dynamic_entry (DT_RELASZ, 0)
2380 || ! add_dynamic_entry (DT_RELAENT,
2381 sizeof (Elf32_External_Rela)))
2382 return FALSE;
2383
2384 /* If any dynamic relocs apply to a read-only section,
2385 then we need a DT_TEXTREL entry. */
2386 if ((info->flags & DF_TEXTREL) == 0)
2387 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2388 info);
2389
2390 if ((info->flags & DF_TEXTREL) != 0)
2391 {
2392 if (! add_dynamic_entry (DT_TEXTREL, 0))
2393 return FALSE;
2394 }
2395 }
2396 }
2397 #undef add_dynamic_entry
2398
2399 return TRUE;
2400 }
2401
2402 /* Relocate an M32R/D ELF section.
2403 There is some attempt to make this function usable for many architectures,
2404 both for RELA and REL type relocs, if only to serve as a learning tool.
2405
2406 The RELOCATE_SECTION function is called by the new ELF backend linker
2407 to handle the relocations for a section.
2408
2409 The relocs are always passed as Rela structures; if the section
2410 actually uses Rel structures, the r_addend field will always be
2411 zero.
2412
2413 This function is responsible for adjust the section contents as
2414 necessary, and (if using Rela relocs and generating a
2415 relocatable output file) adjusting the reloc addend as
2416 necessary.
2417
2418 This function does not have to worry about setting the reloc
2419 address or the reloc symbol index.
2420
2421 LOCAL_SYMS is a pointer to the swapped in local symbols.
2422
2423 LOCAL_SECTIONS is an array giving the section in the input file
2424 corresponding to the st_shndx field of each local symbol.
2425
2426 The global hash table entry for the global symbols can be found
2427 via elf_sym_hashes (input_bfd).
2428
2429 When generating relocatable output, this function must handle
2430 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2431 going to be the section symbol corresponding to the output
2432 section, which means that the addend must be adjusted
2433 accordingly. */
2434
2435 static bfd_boolean
2436 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2437 struct bfd_link_info *info,
2438 bfd *input_bfd,
2439 asection *input_section,
2440 bfd_byte *contents,
2441 Elf_Internal_Rela *relocs,
2442 Elf_Internal_Sym *local_syms,
2443 asection **local_sections)
2444 {
2445 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2446 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2447 Elf_Internal_Rela *rel, *relend;
2448 /* Assume success. */
2449 bfd_boolean ret = TRUE;
2450
2451 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2452 bfd *dynobj;
2453 bfd_vma *local_got_offsets;
2454 asection *sgot, *splt, *sreloc;
2455 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2456
2457 dynobj = htab->root.dynobj;
2458 local_got_offsets = elf_local_got_offsets (input_bfd);
2459
2460 sgot = htab->sgot;
2461 splt = htab->splt;
2462 sreloc = NULL;
2463
2464 rel = relocs;
2465 relend = relocs + input_section->reloc_count;
2466 for (; rel < relend; rel++)
2467 {
2468 int r_type;
2469 reloc_howto_type *howto;
2470 unsigned long r_symndx;
2471 struct elf_link_hash_entry *h;
2472 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2473 ensure it's zero (we use REL relocs, not RELA). Therefore this
2474 should be assigning zero to `addend', but for clarity we use
2475 `r_addend'. */
2476 bfd_vma addend = rel->r_addend;
2477 bfd_vma offset = rel->r_offset;
2478 Elf_Internal_Sym *sym;
2479 asection *sec;
2480 const char *sym_name;
2481 bfd_reloc_status_type r;
2482 const char *errmsg = NULL;
2483 bfd_boolean use_rel = FALSE;
2484
2485 h = NULL;
2486 r_type = ELF32_R_TYPE (rel->r_info);
2487 if (r_type < 0 || r_type >= (int) R_M32R_max)
2488 {
2489 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2490 input_bfd,
2491 (int) r_type);
2492 bfd_set_error (bfd_error_bad_value);
2493 ret = FALSE;
2494 continue;
2495 }
2496
2497 if ( r_type == R_M32R_GNU_VTENTRY
2498 || r_type == R_M32R_GNU_VTINHERIT
2499 || r_type == R_M32R_NONE
2500 || r_type == R_M32R_RELA_GNU_VTENTRY
2501 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2502 continue;
2503
2504 if (r_type <= R_M32R_GNU_VTENTRY)
2505 use_rel = TRUE;
2506
2507 howto = m32r_elf_howto_table + r_type;
2508 r_symndx = ELF32_R_SYM (rel->r_info);
2509
2510 if (info->relocatable && use_rel)
2511 {
2512 /* This is a relocatable link. We don't have to change
2513 anything, unless the reloc is against a section symbol,
2514 in which case we have to adjust according to where the
2515 section symbol winds up in the output section. */
2516 sec = NULL;
2517 if (r_symndx >= symtab_hdr->sh_info)
2518 /* External symbol. */
2519 continue;
2520
2521 /* Local symbol. */
2522 sym = local_syms + r_symndx;
2523 sym_name = "<local symbol>";
2524 /* STT_SECTION: symbol is associated with a section. */
2525 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2526 /* Symbol isn't associated with a section. Nothing to do. */
2527 continue;
2528
2529 sec = local_sections[r_symndx];
2530 addend += sec->output_offset + sym->st_value;
2531
2532 /* If partial_inplace, we need to store any additional addend
2533 back in the section. */
2534 if (! howto->partial_inplace)
2535 continue;
2536 /* ??? Here is a nice place to call a special_function
2537 like handler. */
2538 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2539 r = _bfd_relocate_contents (howto, input_bfd,
2540 addend, contents + offset);
2541 else
2542 {
2543 Elf_Internal_Rela *lorel;
2544
2545 /* We allow an arbitrary number of HI16 relocs before the
2546 LO16 reloc. This permits gcc to emit the HI and LO relocs
2547 itself. */
2548 for (lorel = rel + 1;
2549 (lorel < relend
2550 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2551 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2552 lorel++)
2553 continue;
2554 if (lorel < relend
2555 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2556 {
2557 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2558 contents, addend);
2559 r = bfd_reloc_ok;
2560 }
2561 else
2562 r = _bfd_relocate_contents (howto, input_bfd,
2563 addend, contents + offset);
2564 }
2565 }
2566 else
2567 {
2568 bfd_vma relocation;
2569
2570 /* This is a final link. */
2571 sym = NULL;
2572 sec = NULL;
2573 h = NULL;
2574
2575 if (r_symndx < symtab_hdr->sh_info)
2576 {
2577 /* Local symbol. */
2578 sym = local_syms + r_symndx;
2579 sec = local_sections[r_symndx];
2580 sym_name = "<local symbol>";
2581
2582 if (!use_rel)
2583 {
2584 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2585 addend = rel->r_addend;
2586
2587 if (info->relocatable)
2588 {
2589 /* This is a relocatable link. We don't have to change
2590 anything, unless the reloc is against a section symbol,
2591 in which case we have to adjust according to where the
2592 section symbol winds up in the output section. */
2593 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2594 rel->r_addend += sec->output_offset + sym->st_value;
2595
2596 continue;
2597 }
2598 }
2599 else
2600 {
2601 relocation = (sec->output_section->vma
2602 + sec->output_offset
2603 + sym->st_value);
2604 }
2605 }
2606 else
2607 {
2608 /* External symbol. */
2609 if (info->relocatable && !use_rel)
2610 continue;
2611
2612 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2613 while (h->root.type == bfd_link_hash_indirect
2614 || h->root.type == bfd_link_hash_warning)
2615 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2616 sym_name = h->root.root.string;
2617
2618 if (h->root.type == bfd_link_hash_defined
2619 || h->root.type == bfd_link_hash_defweak)
2620 {
2621 bfd_boolean dyn;
2622 sec = h->root.u.def.section;
2623
2624 dyn = htab->root.dynamic_sections_created;
2625 sec = h->root.u.def.section;
2626 if (r_type == R_M32R_GOTPC24
2627 || (r_type == R_M32R_GOTPC_HI_ULO
2628 || r_type == R_M32R_GOTPC_HI_SLO
2629 || r_type == R_M32R_GOTPC_LO)
2630 || (r_type == R_M32R_26_PLTREL
2631 && h->plt.offset != (bfd_vma) -1)
2632 || ((r_type == R_M32R_GOT24
2633 || r_type == R_M32R_GOT16_HI_ULO
2634 || r_type == R_M32R_GOT16_HI_SLO
2635 || r_type == R_M32R_GOT16_LO)
2636 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2637 info->shared, h)
2638 && (! info->shared
2639 || (! info->symbolic && h->dynindx != -1)
2640 || !h->def_regular))
2641 || (info->shared
2642 && ((! info->symbolic && h->dynindx != -1)
2643 || !h->def_regular)
2644 && (((r_type == R_M32R_16_RELA
2645 || r_type == R_M32R_32_RELA
2646 || r_type == R_M32R_24_RELA
2647 || r_type == R_M32R_HI16_ULO_RELA
2648 || r_type == R_M32R_HI16_SLO_RELA
2649 || r_type == R_M32R_LO16_RELA)
2650 && !h->forced_local)
2651 || r_type == R_M32R_REL32
2652 || r_type == R_M32R_10_PCREL_RELA
2653 || r_type == R_M32R_18_PCREL_RELA
2654 || r_type == R_M32R_26_PCREL_RELA)
2655 && ((input_section->flags & SEC_ALLOC) != 0
2656 /* DWARF will emit R_M32R_16(24,32) relocations
2657 in its sections against symbols defined
2658 externally in shared libraries. We can't do
2659 anything with them here. */
2660 || ((input_section->flags & SEC_DEBUGGING) != 0
2661 && h->def_dynamic))))
2662 {
2663 /* In these cases, we don't need the relocation
2664 value. We check specially because in some
2665 obscure cases sec->output_section will be NULL. */
2666 relocation = 0;
2667 }
2668 else if (sec->output_section == NULL)
2669 {
2670 (*_bfd_error_handler)
2671 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2672 input_bfd,
2673 input_section,
2674 (long) rel->r_offset,
2675 howto->name,
2676 h->root.root.string);
2677
2678 relocation = 0;
2679 }
2680 else
2681 relocation = (h->root.u.def.value
2682 + sec->output_section->vma
2683 + sec->output_offset);
2684 }
2685 else if (h->root.type == bfd_link_hash_undefweak)
2686 relocation = 0;
2687 else if (info->unresolved_syms_in_objects == RM_IGNORE
2688 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2689 relocation = 0;
2690 else
2691 {
2692 if (! ((*info->callbacks->undefined_symbol)
2693 (info, h->root.root.string, input_bfd,
2694 input_section, offset,
2695 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2696 || ELF_ST_VISIBILITY (h->other)))))
2697 return FALSE;
2698 relocation = 0;
2699 }
2700 }
2701
2702 /* Sanity check the address. */
2703 if (offset > high_address)
2704 {
2705 r = bfd_reloc_outofrange;
2706 goto check_reloc;
2707 }
2708
2709 switch ((int) r_type)
2710 {
2711 case R_M32R_GOTOFF:
2712 /* Relocation is relative to the start of the global offset
2713 table (for ld24 rx, #uimm24). eg access at label+addend
2714
2715 ld24 rx. #label@GOTOFF + addend
2716 sub rx, r12. */
2717
2718 BFD_ASSERT (sgot != NULL);
2719
2720 relocation = -(relocation - sgot->output_section->vma);
2721 rel->r_addend = -rel->r_addend;
2722 break;
2723
2724 case R_M32R_GOTOFF_HI_ULO:
2725 case R_M32R_GOTOFF_HI_SLO:
2726 case R_M32R_GOTOFF_LO:
2727 BFD_ASSERT (sgot != NULL);
2728
2729 relocation -= sgot->output_section->vma;
2730
2731 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2732 && ((relocation + rel->r_addend) & 0x8000))
2733 rel->r_addend += 0x10000;
2734 break;
2735
2736 case R_M32R_GOTPC24:
2737 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2738 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2739 */
2740 relocation = sgot->output_section->vma;
2741 break;
2742
2743 case R_M32R_GOTPC_HI_ULO:
2744 case R_M32R_GOTPC_HI_SLO:
2745 case R_M32R_GOTPC_LO:
2746 {
2747 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2748 bl .+4
2749 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2750 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2751 or
2752 bl .+4
2753 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2754 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2755 */
2756 relocation = sgot->output_section->vma;
2757 relocation -= (input_section->output_section->vma
2758 + input_section->output_offset
2759 + rel->r_offset);
2760 if ((r_type == R_M32R_GOTPC_HI_SLO)
2761 && ((relocation + rel->r_addend) & 0x8000))
2762 rel->r_addend += 0x10000;
2763
2764 break;
2765 }
2766 case R_M32R_GOT16_HI_ULO:
2767 case R_M32R_GOT16_HI_SLO:
2768 case R_M32R_GOT16_LO:
2769 /* Fall through. */
2770 case R_M32R_GOT24:
2771 /* Relocation is to the entry for this symbol in the global
2772 offset table. */
2773 BFD_ASSERT (sgot != NULL);
2774
2775 if (h != NULL)
2776 {
2777 bfd_boolean dyn;
2778 bfd_vma off;
2779
2780 off = h->got.offset;
2781 BFD_ASSERT (off != (bfd_vma) -1);
2782
2783 dyn = htab->root.dynamic_sections_created;
2784 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2785 || (info->shared
2786 && (info->symbolic
2787 || h->dynindx == -1
2788 || h->forced_local)
2789 && h->def_regular))
2790 {
2791 /* This is actually a static link, or it is a
2792 -Bsymbolic link and the symbol is defined
2793 locally, or the symbol was forced to be local
2794 because of a version file. We must initialize
2795 this entry in the global offset table. Since the
2796 offset must always be a multiple of 4, we use the
2797 least significant bit to record whether we have
2798 initialized it already.
2799
2800 When doing a dynamic link, we create a .rela.got
2801 relocation entry to initialize the value. This
2802 is done in the finish_dynamic_symbol routine. */
2803 if ((off & 1) != 0)
2804 off &= ~1;
2805 else
2806 {
2807 bfd_put_32 (output_bfd, relocation,
2808 sgot->contents + off);
2809 h->got.offset |= 1;
2810 }
2811 }
2812
2813 relocation = sgot->output_offset + off;
2814 }
2815 else
2816 {
2817 bfd_vma off;
2818 bfd_byte *loc;
2819
2820 BFD_ASSERT (local_got_offsets != NULL
2821 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2822
2823 off = local_got_offsets[r_symndx];
2824
2825 /* The offset must always be a multiple of 4. We use
2826 the least significant bit to record whether we have
2827 already processed this entry. */
2828 if ((off & 1) != 0)
2829 off &= ~1;
2830 else
2831 {
2832 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2833
2834 if (info->shared)
2835 {
2836 asection *srelgot;
2837 Elf_Internal_Rela outrel;
2838
2839 /* We need to generate a R_M32R_RELATIVE reloc
2840 for the dynamic linker. */
2841 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2842 BFD_ASSERT (srelgot != NULL);
2843
2844 outrel.r_offset = (sgot->output_section->vma
2845 + sgot->output_offset
2846 + off);
2847 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2848 outrel.r_addend = relocation;
2849 loc = srelgot->contents;
2850 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2851 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2852 ++srelgot->reloc_count;
2853 }
2854
2855 local_got_offsets[r_symndx] |= 1;
2856 }
2857
2858 relocation = sgot->output_offset + off;
2859 }
2860 if ((r_type == R_M32R_GOT16_HI_SLO)
2861 && ((relocation + rel->r_addend) & 0x8000))
2862 rel->r_addend += 0x10000;
2863
2864 break;
2865
2866 case R_M32R_26_PLTREL:
2867 /* Relocation is to the entry for this symbol in the
2868 procedure linkage table. */
2869
2870 /* The native assembler will generate a 26_PLTREL reloc
2871 for a local symbol if you assemble a call from one
2872 section to another when using -K pic. */
2873 if (h == NULL)
2874 break;
2875
2876 if (h->forced_local)
2877 break;
2878
2879 if (h->plt.offset == (bfd_vma) -1)
2880 /* We didn't make a PLT entry for this symbol. This
2881 happens when statically linking PIC code, or when
2882 using -Bsymbolic. */
2883 break;
2884
2885 relocation = (splt->output_section->vma
2886 + splt->output_offset
2887 + h->plt.offset);
2888 break;
2889
2890 case R_M32R_HI16_SLO_RELA:
2891 if ((relocation + rel->r_addend) & 0x8000)
2892 rel->r_addend += 0x10000;
2893 /* Fall through. */
2894
2895 case R_M32R_16_RELA:
2896 case R_M32R_24_RELA:
2897 case R_M32R_32_RELA:
2898 case R_M32R_REL32:
2899 case R_M32R_10_PCREL_RELA:
2900 case R_M32R_18_PCREL_RELA:
2901 case R_M32R_26_PCREL_RELA:
2902 case R_M32R_HI16_ULO_RELA:
2903 case R_M32R_LO16_RELA:
2904 if (info->shared
2905 && r_symndx != 0
2906 && (input_section->flags & SEC_ALLOC) != 0
2907 && (( r_type != R_M32R_10_PCREL_RELA
2908 && r_type != R_M32R_18_PCREL_RELA
2909 && r_type != R_M32R_26_PCREL_RELA
2910 && r_type != R_M32R_REL32)
2911 || (h != NULL
2912 && h->dynindx != -1
2913 && (! info->symbolic
2914 || !h->def_regular))))
2915 {
2916 Elf_Internal_Rela outrel;
2917 bfd_boolean skip, relocate;
2918 bfd_byte *loc;
2919
2920 /* When generating a shared object, these relocations
2921 are copied into the output file to be resolved at run
2922 time. */
2923 if (sreloc == NULL)
2924 {
2925 const char *name;
2926
2927 name = (bfd_elf_string_from_elf_section
2928 (input_bfd,
2929 elf_elfheader (input_bfd)->e_shstrndx,
2930 elf_section_data (input_section)->rel_hdr.sh_name));
2931 if (name == NULL)
2932 return FALSE;
2933
2934 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2935 && strcmp (bfd_get_section_name (input_bfd,
2936 input_section),
2937 name + 5) == 0);
2938
2939 sreloc = bfd_get_section_by_name (dynobj, name);
2940 BFD_ASSERT (sreloc != NULL);
2941 }
2942
2943 skip = FALSE;
2944 relocate = FALSE;
2945
2946 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2947 info,
2948 input_section,
2949 rel->r_offset);
2950 if (outrel.r_offset == (bfd_vma) -1)
2951 skip = TRUE;
2952 else if (outrel.r_offset == (bfd_vma) -2)
2953 skip = relocate = TRUE;
2954 outrel.r_offset += (input_section->output_section->vma
2955 + input_section->output_offset);
2956
2957 if (skip)
2958 memset (&outrel, 0, sizeof outrel);
2959 else if ( r_type == R_M32R_10_PCREL_RELA
2960 || r_type == R_M32R_18_PCREL_RELA
2961 || r_type == R_M32R_26_PCREL_RELA
2962 || r_type == R_M32R_REL32)
2963 {
2964 BFD_ASSERT (h != NULL && h->dynindx != -1);
2965 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2966 outrel.r_addend = rel->r_addend;
2967 }
2968 else
2969 {
2970 /* h->dynindx may be -1 if this symbol was marked to
2971 become local. */
2972 if (h == NULL
2973 || ((info->symbolic || h->dynindx == -1)
2974 && h->def_regular))
2975 {
2976 relocate = TRUE;
2977 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2978 outrel.r_addend = relocation + rel->r_addend;
2979 }
2980 else
2981 {
2982 BFD_ASSERT (h->dynindx != -1);
2983 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2984 outrel.r_addend = relocation + rel->r_addend;
2985 }
2986 }
2987
2988 loc = sreloc->contents;
2989 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2990 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2991 ++sreloc->reloc_count;
2992
2993 /* If this reloc is against an external symbol, we do
2994 not want to fiddle with the addend. Otherwise, we
2995 need to include the symbol value so that it becomes
2996 an addend for the dynamic reloc. */
2997 if (! relocate)
2998 continue;
2999 break;
3000 }
3001 else if (r_type != R_M32R_10_PCREL_RELA)
3002 break;
3003 /* Fall through. */
3004
3005 case (int) R_M32R_10_PCREL :
3006 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
3007 contents, offset,
3008 sec, relocation, addend);
3009 goto check_reloc;
3010
3011 case (int) R_M32R_HI16_SLO :
3012 case (int) R_M32R_HI16_ULO :
3013 {
3014 Elf_Internal_Rela *lorel;
3015
3016 /* We allow an arbitrary number of HI16 relocs before the
3017 LO16 reloc. This permits gcc to emit the HI and LO relocs
3018 itself. */
3019 for (lorel = rel + 1;
3020 (lorel < relend
3021 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
3022 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3023 lorel++)
3024 continue;
3025 if (lorel < relend
3026 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3027 {
3028 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3029 contents, relocation + addend);
3030 r = bfd_reloc_ok;
3031 }
3032 else
3033 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3034 contents, offset,
3035 relocation, addend);
3036 }
3037
3038 goto check_reloc;
3039
3040 case (int) R_M32R_SDA16_RELA:
3041 case (int) R_M32R_SDA16 :
3042 {
3043 const char *name;
3044
3045 BFD_ASSERT (sec != NULL);
3046 name = bfd_get_section_name (abfd, sec);
3047
3048 if ( strcmp (name, ".sdata") == 0
3049 || strcmp (name, ".sbss") == 0
3050 || strcmp (name, ".scommon") == 0)
3051 {
3052 bfd_vma sda_base;
3053 bfd *out_bfd = sec->output_section->owner;
3054
3055 r = m32r_elf_final_sda_base (out_bfd, info,
3056 &errmsg,
3057 &sda_base);
3058 if (r != bfd_reloc_ok)
3059 {
3060 ret = FALSE;
3061 goto check_reloc;
3062 }
3063
3064 /* At this point `relocation' contains the object's
3065 address. */
3066 relocation -= sda_base;
3067 /* Now it contains the offset from _SDA_BASE_. */
3068 }
3069 else
3070 {
3071 (*_bfd_error_handler)
3072 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3073 input_bfd,
3074 sec,
3075 sym_name,
3076 m32r_elf_howto_table[(int) r_type].name);
3077 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3078 ret = FALSE;
3079 continue;
3080 }
3081 }
3082 /* Fall through. */
3083
3084 default : /* OLD_M32R_RELOC */
3085
3086 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3087 contents, offset,
3088 relocation, addend);
3089 goto check_reloc;
3090 }
3091
3092 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3093 contents, rel->r_offset,
3094 relocation, rel->r_addend);
3095
3096 }
3097
3098 check_reloc:
3099
3100 if (r != bfd_reloc_ok)
3101 {
3102 /* FIXME: This should be generic enough to go in a utility. */
3103 const char *name;
3104
3105 if (h != NULL)
3106 name = h->root.root.string;
3107 else
3108 {
3109 name = (bfd_elf_string_from_elf_section
3110 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3111 if (name == NULL || *name == '\0')
3112 name = bfd_section_name (input_bfd, sec);
3113 }
3114
3115 if (errmsg != NULL)
3116 goto common_error;
3117
3118 switch (r)
3119 {
3120 case bfd_reloc_overflow:
3121 if (! ((*info->callbacks->reloc_overflow)
3122 (info, (h ? &h->root : NULL), name, howto->name,
3123 (bfd_vma) 0, input_bfd, input_section, offset)))
3124 return FALSE;
3125 break;
3126
3127 case bfd_reloc_undefined:
3128 if (! ((*info->callbacks->undefined_symbol)
3129 (info, name, input_bfd, input_section,
3130 offset, TRUE)))
3131 return FALSE;
3132 break;
3133
3134 case bfd_reloc_outofrange:
3135 errmsg = _("internal error: out of range error");
3136 goto common_error;
3137
3138 case bfd_reloc_notsupported:
3139 errmsg = _("internal error: unsupported relocation error");
3140 goto common_error;
3141
3142 case bfd_reloc_dangerous:
3143 errmsg = _("internal error: dangerous error");
3144 goto common_error;
3145
3146 default:
3147 errmsg = _("internal error: unknown error");
3148 /* fall through */
3149
3150 common_error:
3151 if (!((*info->callbacks->warning)
3152 (info, errmsg, name, input_bfd, input_section,
3153 offset)))
3154 return FALSE;
3155 break;
3156 }
3157 }
3158 }
3159
3160 return ret;
3161 }
3162
3163 /* Finish up dynamic symbol handling. We set the contents of various
3164 dynamic sections here. */
3165
3166 static bfd_boolean
3167 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3168 struct bfd_link_info *info,
3169 struct elf_link_hash_entry *h,
3170 Elf_Internal_Sym *sym)
3171 {
3172 struct elf_m32r_link_hash_table *htab;
3173 bfd *dynobj;
3174 bfd_byte *loc;
3175
3176 #ifdef DEBUG_PIC
3177 printf ("m32r_elf_finish_dynamic_symbol()\n");
3178 #endif
3179
3180 htab = m32r_elf_hash_table (info);
3181 dynobj = htab->root.dynobj;
3182
3183 if (h->plt.offset != (bfd_vma) -1)
3184 {
3185 asection *splt;
3186 asection *sgot;
3187 asection *srela;
3188
3189 bfd_vma plt_index;
3190 bfd_vma got_offset;
3191 Elf_Internal_Rela rela;
3192
3193 /* This symbol has an entry in the procedure linkage table. Set
3194 it up. */
3195
3196 BFD_ASSERT (h->dynindx != -1);
3197
3198 splt = htab->splt;
3199 sgot = htab->sgotplt;
3200 srela = htab->srelplt;
3201 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3202
3203 /* Get the index in the procedure linkage table which
3204 corresponds to this symbol. This is the index of this symbol
3205 in all the symbols for which we are making plt entries. The
3206 first entry in the procedure linkage table is reserved. */
3207 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3208
3209 /* Get the offset into the .got table of the entry that
3210 corresponds to this function. Each .got entry is 4 bytes.
3211 The first three are reserved. */
3212 got_offset = (plt_index + 3) * 4;
3213
3214 /* Fill in the entry in the procedure linkage table. */
3215 if (! info->shared)
3216 {
3217 bfd_put_32 (output_bfd,
3218 (PLT_ENTRY_WORD0b
3219 + (((sgot->output_section->vma
3220 + sgot->output_offset
3221 + got_offset) >> 16) & 0xffff)),
3222 splt->contents + h->plt.offset);
3223 bfd_put_32 (output_bfd,
3224 (PLT_ENTRY_WORD1b
3225 + ((sgot->output_section->vma
3226 + sgot->output_offset
3227 + got_offset) & 0xffff)),
3228 splt->contents + h->plt.offset + 4);
3229 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3230 splt->contents + h->plt.offset + 8);
3231 bfd_put_32 (output_bfd,
3232 (PLT_ENTRY_WORD3
3233 + plt_index * sizeof (Elf32_External_Rela)),
3234 splt->contents + h->plt.offset + 12);
3235 bfd_put_32 (output_bfd,
3236 (PLT_ENTRY_WORD4
3237 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3238 splt->contents + h->plt.offset + 16);
3239 }
3240 else
3241 {
3242 bfd_put_32 (output_bfd,
3243 PLT_ENTRY_WORD0 + got_offset,
3244 splt->contents + h->plt.offset);
3245 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3246 splt->contents + h->plt.offset + 4);
3247 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3248 splt->contents + h->plt.offset + 8);
3249 bfd_put_32 (output_bfd,
3250 (PLT_ENTRY_WORD3
3251 + plt_index * sizeof (Elf32_External_Rela)),
3252 splt->contents + h->plt.offset + 12);
3253 bfd_put_32 (output_bfd,
3254 (PLT_ENTRY_WORD4
3255 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3256 splt->contents + h->plt.offset + 16);
3257 }
3258
3259 /* Fill in the entry in the global offset table. */
3260 bfd_put_32 (output_bfd,
3261 (splt->output_section->vma
3262 + splt->output_offset
3263 + h->plt.offset
3264 + 12), /* same offset */
3265 sgot->contents + got_offset);
3266
3267 /* Fill in the entry in the .rela.plt section. */
3268 rela.r_offset = (sgot->output_section->vma
3269 + sgot->output_offset
3270 + got_offset);
3271 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3272 rela.r_addend = 0;
3273 loc = srela->contents;
3274 loc += plt_index * sizeof (Elf32_External_Rela);
3275 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3276
3277 if (!h->def_regular)
3278 {
3279 /* Mark the symbol as undefined, rather than as defined in
3280 the .plt section. Leave the value alone. */
3281 sym->st_shndx = SHN_UNDEF;
3282 }
3283 }
3284
3285 if (h->got.offset != (bfd_vma) -1)
3286 {
3287 asection *sgot;
3288 asection *srela;
3289 Elf_Internal_Rela rela;
3290
3291 /* This symbol has an entry in the global offset table. Set it
3292 up. */
3293
3294 sgot = htab->sgot;
3295 srela = htab->srelgot;
3296 BFD_ASSERT (sgot != NULL && srela != NULL);
3297
3298 rela.r_offset = (sgot->output_section->vma
3299 + sgot->output_offset
3300 + (h->got.offset &~ 1));
3301
3302 /* If this is a -Bsymbolic link, and the symbol is defined
3303 locally, we just want to emit a RELATIVE reloc. Likewise if
3304 the symbol was forced to be local because of a version file.
3305 The entry in the global offset table will already have been
3306 initialized in the relocate_section function. */
3307 if (info->shared
3308 && (info->symbolic
3309 || h->dynindx == -1
3310 || h->forced_local)
3311 && h->def_regular)
3312 {
3313 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3314 rela.r_addend = (h->root.u.def.value
3315 + h->root.u.def.section->output_section->vma
3316 + h->root.u.def.section->output_offset);
3317 }
3318 else
3319 {
3320 BFD_ASSERT ((h->got.offset & 1) == 0);
3321 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3322 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3323 rela.r_addend = 0;
3324 }
3325
3326 loc = srela->contents;
3327 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3328 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3329 ++srela->reloc_count;
3330 }
3331
3332 if (h->needs_copy)
3333 {
3334 asection *s;
3335 Elf_Internal_Rela rela;
3336
3337 /* This symbols needs a copy reloc. Set it up. */
3338
3339 BFD_ASSERT (h->dynindx != -1
3340 && (h->root.type == bfd_link_hash_defined
3341 || h->root.type == bfd_link_hash_defweak));
3342
3343 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3344 ".rela.bss");
3345 BFD_ASSERT (s != NULL);
3346
3347 rela.r_offset = (h->root.u.def.value
3348 + h->root.u.def.section->output_section->vma
3349 + h->root.u.def.section->output_offset);
3350 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3351 rela.r_addend = 0;
3352 loc = s->contents;
3353 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3354 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3355 ++s->reloc_count;
3356 }
3357
3358 /* Mark some specially defined symbols as absolute. */
3359 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3360 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3361 sym->st_shndx = SHN_ABS;
3362
3363 return TRUE;
3364 }
3365
3366
3367 /* Finish up the dynamic sections. */
3368
3369 static bfd_boolean
3370 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3371 struct bfd_link_info *info)
3372 {
3373 struct elf_m32r_link_hash_table *htab;
3374 bfd *dynobj;
3375 asection *sdyn;
3376 asection *sgot;
3377
3378 #ifdef DEBUG_PIC
3379 printf ("m32r_elf_finish_dynamic_sections()\n");
3380 #endif
3381
3382 htab = m32r_elf_hash_table (info);
3383 dynobj = htab->root.dynobj;
3384
3385 sgot = htab->sgotplt;
3386 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3387
3388 if (htab->root.dynamic_sections_created)
3389 {
3390 asection *splt;
3391 Elf32_External_Dyn *dyncon, *dynconend;
3392
3393 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3394
3395 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3396 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3397
3398 for (; dyncon < dynconend; dyncon++)
3399 {
3400 Elf_Internal_Dyn dyn;
3401 const char *name;
3402 asection *s;
3403
3404 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3405
3406 switch (dyn.d_tag)
3407 {
3408 default:
3409 break;
3410
3411 case DT_PLTGOT:
3412 name = ".got";
3413 s = htab->sgot->output_section;
3414 goto get_vma;
3415 case DT_JMPREL:
3416 name = ".rela.plt";
3417 s = htab->srelplt->output_section;
3418 get_vma:
3419 BFD_ASSERT (s != NULL);
3420 dyn.d_un.d_ptr = s->vma;
3421 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3422 break;
3423
3424 case DT_PLTRELSZ:
3425 s = htab->srelplt->output_section;
3426 BFD_ASSERT (s != NULL);
3427 dyn.d_un.d_val = s->size;
3428 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3429 break;
3430
3431 case DT_RELASZ:
3432 /* My reading of the SVR4 ABI indicates that the
3433 procedure linkage table relocs (DT_JMPREL) should be
3434 included in the overall relocs (DT_RELA). This is
3435 what Solaris does. However, UnixWare can not handle
3436 that case. Therefore, we override the DT_RELASZ entry
3437 here to make it not include the JMPREL relocs. Since
3438 the linker script arranges for .rela.plt to follow all
3439 other relocation sections, we don't have to worry
3440 about changing the DT_RELA entry. */
3441 if (htab->srelplt != NULL)
3442 {
3443 s = htab->srelplt->output_section;
3444 dyn.d_un.d_val -= s->size;
3445 }
3446 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3447 break;
3448 }
3449 }
3450
3451 /* Fill in the first entry in the procedure linkage table. */
3452 splt = htab->splt;
3453 if (splt && splt->size > 0)
3454 {
3455 if (info->shared)
3456 {
3457 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3458 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3459 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3460 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3461 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3462 }
3463 else
3464 {
3465 unsigned long addr;
3466 /* addr = .got + 4 */
3467 addr = sgot->output_section->vma + sgot->output_offset + 4;
3468 bfd_put_32 (output_bfd,
3469 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3470 splt->contents);
3471 bfd_put_32 (output_bfd,
3472 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3473 splt->contents + 4);
3474 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3475 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3476 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3477 }
3478
3479 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3480 PLT_ENTRY_SIZE;
3481 }
3482 }
3483
3484 /* Fill in the first three entries in the global offset table. */
3485 if (sgot && sgot->size > 0)
3486 {
3487 if (sdyn == NULL)
3488 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3489 else
3490 bfd_put_32 (output_bfd,
3491 sdyn->output_section->vma + sdyn->output_offset,
3492 sgot->contents);
3493 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3494 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3495
3496 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3497 }
3498
3499 return TRUE;
3500 }
3501
3502 \f
3503 /* Set the right machine number. */
3504
3505 static bfd_boolean
3506 m32r_elf_object_p (bfd *abfd)
3507 {
3508 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3509 {
3510 default:
3511 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3512 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3513 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3514 }
3515 return TRUE;
3516 }
3517
3518 /* Store the machine number in the flags field. */
3519
3520 static void
3521 m32r_elf_final_write_processing (bfd *abfd,
3522 bfd_boolean linker ATTRIBUTE_UNUSED)
3523 {
3524 unsigned long val;
3525
3526 switch (bfd_get_mach (abfd))
3527 {
3528 default:
3529 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3530 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3531 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3532 }
3533
3534 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3535 elf_elfheader (abfd)->e_flags |= val;
3536 }
3537
3538 /* Function to keep M32R specific file flags. */
3539
3540 static bfd_boolean
3541 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3542 {
3543 BFD_ASSERT (!elf_flags_init (abfd)
3544 || elf_elfheader (abfd)->e_flags == flags);
3545
3546 elf_elfheader (abfd)->e_flags = flags;
3547 elf_flags_init (abfd) = TRUE;
3548 return TRUE;
3549 }
3550
3551 /* Merge backend specific data from an object file to the output
3552 object file when linking. */
3553
3554 static bfd_boolean
3555 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3556 {
3557 flagword out_flags;
3558 flagword in_flags;
3559
3560 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3561 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3562 return TRUE;
3563
3564 in_flags = elf_elfheader (ibfd)->e_flags;
3565 out_flags = elf_elfheader (obfd)->e_flags;
3566
3567 if (! elf_flags_init (obfd))
3568 {
3569 /* If the input is the default architecture then do not
3570 bother setting the flags for the output architecture,
3571 instead allow future merges to do this. If no future
3572 merges ever set these flags then they will retain their
3573 unitialised values, which surprise surprise, correspond
3574 to the default values. */
3575 if (bfd_get_arch_info (ibfd)->the_default)
3576 return TRUE;
3577
3578 elf_flags_init (obfd) = TRUE;
3579 elf_elfheader (obfd)->e_flags = in_flags;
3580
3581 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3582 && bfd_get_arch_info (obfd)->the_default)
3583 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3584 bfd_get_mach (ibfd));
3585
3586 return TRUE;
3587 }
3588
3589 /* Check flag compatibility. */
3590 if (in_flags == out_flags)
3591 return TRUE;
3592
3593 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3594 {
3595 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3596 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3597 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3598 {
3599 (*_bfd_error_handler)
3600 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3601
3602 bfd_set_error (bfd_error_bad_value);
3603 return FALSE;
3604 }
3605 }
3606
3607 return TRUE;
3608 }
3609
3610 /* Display the flags field. */
3611
3612 static bfd_boolean
3613 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3614 {
3615 FILE * file = (FILE *) ptr;
3616
3617 BFD_ASSERT (abfd != NULL && ptr != NULL);
3618
3619 _bfd_elf_print_private_bfd_data (abfd, ptr);
3620
3621 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3622
3623 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3624 {
3625 default:
3626 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3627 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3628 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3629 }
3630
3631 fputc ('\n', file);
3632
3633 return TRUE;
3634 }
3635
3636 static asection *
3637 m32r_elf_gc_mark_hook (asection *sec,
3638 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3639 Elf_Internal_Rela *rel,
3640 struct elf_link_hash_entry *h,
3641 Elf_Internal_Sym *sym)
3642 {
3643 if (h != NULL)
3644 {
3645 switch (ELF32_R_TYPE (rel->r_info))
3646 {
3647 case R_M32R_GNU_VTINHERIT:
3648 case R_M32R_GNU_VTENTRY:
3649 case R_M32R_RELA_GNU_VTINHERIT:
3650 case R_M32R_RELA_GNU_VTENTRY:
3651 break;
3652
3653 default:
3654 switch (h->root.type)
3655 {
3656 case bfd_link_hash_defined:
3657 case bfd_link_hash_defweak:
3658 return h->root.u.def.section;
3659
3660 case bfd_link_hash_common:
3661 return h->root.u.c.p->section;
3662
3663 default:
3664 break;
3665 }
3666 }
3667 }
3668 else
3669 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3670
3671 return NULL;
3672 }
3673
3674 static bfd_boolean
3675 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3676 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3677 asection *sec ATTRIBUTE_UNUSED,
3678 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3679 {
3680 /* Update the got entry reference counts for the section being removed. */
3681 Elf_Internal_Shdr *symtab_hdr;
3682 struct elf_link_hash_entry **sym_hashes;
3683 bfd_signed_vma *local_got_refcounts;
3684 const Elf_Internal_Rela *rel, *relend;
3685
3686 elf_section_data (sec)->local_dynrel = NULL;
3687
3688 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3689 sym_hashes = elf_sym_hashes (abfd);
3690 local_got_refcounts = elf_local_got_refcounts (abfd);
3691
3692 relend = relocs + sec->reloc_count;
3693 for (rel = relocs; rel < relend; rel++)
3694 {
3695 unsigned long r_symndx;
3696 struct elf_link_hash_entry *h = NULL;
3697
3698 r_symndx = ELF32_R_SYM (rel->r_info);
3699 if (r_symndx >= symtab_hdr->sh_info)
3700 {
3701 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3702 while (h->root.type == bfd_link_hash_indirect
3703 || h->root.type == bfd_link_hash_warning)
3704 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3705 }
3706
3707 switch (ELF32_R_TYPE (rel->r_info))
3708 {
3709 case R_M32R_GOT16_HI_ULO:
3710 case R_M32R_GOT16_HI_SLO:
3711 case R_M32R_GOT16_LO:
3712 case R_M32R_GOTOFF:
3713 case R_M32R_GOTOFF_HI_ULO:
3714 case R_M32R_GOTOFF_HI_SLO:
3715 case R_M32R_GOTOFF_LO:
3716 case R_M32R_GOT24:
3717 case R_M32R_GOTPC_HI_ULO:
3718 case R_M32R_GOTPC_HI_SLO:
3719 case R_M32R_GOTPC_LO:
3720 case R_M32R_GOTPC24:
3721 if (h != NULL)
3722 {
3723 if (h->got.refcount > 0)
3724 h->got.refcount--;
3725 }
3726 else
3727 {
3728 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3729 local_got_refcounts[r_symndx]--;
3730 }
3731 break;
3732
3733 case R_M32R_16_RELA:
3734 case R_M32R_24_RELA:
3735 case R_M32R_32_RELA:
3736 case R_M32R_REL32:
3737 case R_M32R_HI16_ULO_RELA:
3738 case R_M32R_HI16_SLO_RELA:
3739 case R_M32R_LO16_RELA:
3740 case R_M32R_SDA16_RELA:
3741 case R_M32R_10_PCREL_RELA:
3742 case R_M32R_18_PCREL_RELA:
3743 case R_M32R_26_PCREL_RELA:
3744 if (h != NULL)
3745 {
3746 struct elf_m32r_link_hash_entry *eh;
3747 struct elf_m32r_dyn_relocs **pp;
3748 struct elf_m32r_dyn_relocs *p;
3749
3750 if (!info->shared && h->plt.refcount > 0)
3751 h->plt.refcount -= 1;
3752
3753 eh = (struct elf_m32r_link_hash_entry *) h;
3754
3755 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3756 if (p->sec == sec)
3757 {
3758 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3759 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3760 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3761 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3762 p->pc_count -= 1;
3763 p->count -= 1;
3764 if (p->count == 0)
3765 *pp = p->next;
3766 break;
3767 }
3768 }
3769 break;
3770
3771 case R_M32R_26_PLTREL:
3772 if (h != NULL)
3773 {
3774 if (h->plt.refcount > 0)
3775 h->plt.refcount--;
3776 }
3777 break;
3778
3779 default:
3780 break;
3781 }
3782 }
3783
3784 return TRUE;
3785 }
3786
3787 /* Look through the relocs for a section during the first phase.
3788 Since we don't do .gots or .plts, we just need to consider the
3789 virtual table relocs for gc. */
3790
3791 static bfd_boolean
3792 m32r_elf_check_relocs (bfd *abfd,
3793 struct bfd_link_info *info,
3794 asection *sec,
3795 const Elf_Internal_Rela *relocs)
3796 {
3797 Elf_Internal_Shdr *symtab_hdr;
3798 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3799 const Elf_Internal_Rela *rel;
3800 const Elf_Internal_Rela *rel_end;
3801 struct elf_m32r_link_hash_table *htab;
3802 bfd *dynobj;
3803 bfd_vma *local_got_offsets;
3804 asection *sgot, *srelgot, *sreloc;
3805
3806 if (info->relocatable)
3807 return TRUE;
3808
3809 sgot = srelgot = sreloc = NULL;
3810
3811 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3812 sym_hashes = elf_sym_hashes (abfd);
3813 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3814 if (!elf_bad_symtab (abfd))
3815 sym_hashes_end -= symtab_hdr->sh_info;
3816
3817 htab = m32r_elf_hash_table (info);
3818 dynobj = htab->root.dynobj;
3819 local_got_offsets = elf_local_got_offsets (abfd);
3820
3821 rel_end = relocs + sec->reloc_count;
3822 for (rel = relocs; rel < rel_end; rel++)
3823 {
3824 int r_type;
3825 struct elf_link_hash_entry *h;
3826 unsigned long r_symndx;
3827
3828 r_symndx = ELF32_R_SYM (rel->r_info);
3829 r_type = ELF32_R_TYPE (rel->r_info);
3830 if (r_symndx < symtab_hdr->sh_info)
3831 h = NULL;
3832 else
3833 {
3834 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3835 while (h->root.type == bfd_link_hash_indirect
3836 || h->root.type == bfd_link_hash_warning)
3837 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3838 }
3839
3840 /* Some relocs require a global offset table. */
3841 if (htab->sgot == NULL)
3842 {
3843 switch (r_type)
3844 {
3845 case R_M32R_GOT16_HI_ULO:
3846 case R_M32R_GOT16_HI_SLO:
3847 case R_M32R_GOTOFF:
3848 case R_M32R_GOTOFF_HI_ULO:
3849 case R_M32R_GOTOFF_HI_SLO:
3850 case R_M32R_GOTOFF_LO:
3851 case R_M32R_GOT16_LO:
3852 case R_M32R_GOTPC24:
3853 case R_M32R_GOTPC_HI_ULO:
3854 case R_M32R_GOTPC_HI_SLO:
3855 case R_M32R_GOTPC_LO:
3856 case R_M32R_GOT24:
3857 if (dynobj == NULL)
3858 htab->root.dynobj = dynobj = abfd;
3859 if (! create_got_section (dynobj, info))
3860 return FALSE;
3861 break;
3862
3863 default:
3864 break;
3865 }
3866 }
3867
3868 switch (r_type)
3869 {
3870 case R_M32R_GOT16_HI_ULO:
3871 case R_M32R_GOT16_HI_SLO:
3872 case R_M32R_GOT16_LO:
3873 case R_M32R_GOT24:
3874
3875 if (h != NULL)
3876 h->got.refcount += 1;
3877 else
3878 {
3879 bfd_signed_vma *local_got_refcounts;
3880
3881 /* This is a global offset table entry for a local
3882 symbol. */
3883 local_got_refcounts = elf_local_got_refcounts (abfd);
3884 if (local_got_refcounts == NULL)
3885 {
3886 bfd_size_type size;
3887
3888 size = symtab_hdr->sh_info;
3889 size *= sizeof (bfd_signed_vma);
3890 local_got_refcounts = bfd_zalloc (abfd, size);
3891 if (local_got_refcounts == NULL)
3892 return FALSE;
3893 elf_local_got_refcounts (abfd) = local_got_refcounts;
3894 }
3895 local_got_refcounts[r_symndx] += 1;
3896 }
3897 break;
3898
3899 case R_M32R_26_PLTREL:
3900 /* This symbol requires a procedure linkage table entry. We
3901 actually build the entry in adjust_dynamic_symbol,
3902 because this might be a case of linking PIC code without
3903 linking in any dynamic objects, in which case we don't
3904 need to generate a procedure linkage table after all. */
3905
3906 /* If this is a local symbol, we resolve it directly without
3907 creating a procedure linkage table entry. */
3908 if (h == NULL)
3909 continue;
3910
3911 if (h->forced_local)
3912 break;
3913
3914 h->needs_plt = 1;
3915 h->plt.refcount += 1;
3916 break;
3917
3918 case R_M32R_16_RELA:
3919 case R_M32R_24_RELA:
3920 case R_M32R_32_RELA:
3921 case R_M32R_REL32:
3922 case R_M32R_HI16_ULO_RELA:
3923 case R_M32R_HI16_SLO_RELA:
3924 case R_M32R_LO16_RELA:
3925 case R_M32R_SDA16_RELA:
3926 case R_M32R_10_PCREL_RELA:
3927 case R_M32R_18_PCREL_RELA:
3928 case R_M32R_26_PCREL_RELA:
3929
3930 if (h != NULL && !info->shared)
3931 {
3932 h->non_got_ref = 1;
3933 h->plt.refcount += 1;
3934 }
3935
3936 /* If we are creating a shared library, and this is a reloc
3937 against a global symbol, or a non PC relative reloc
3938 against a local symbol, then we need to copy the reloc
3939 into the shared library. However, if we are linking with
3940 -Bsymbolic, we do not need to copy a reloc against a
3941 global symbol which is defined in an object we are
3942 including in the link (i.e., DEF_REGULAR is set). At
3943 this point we have not seen all the input files, so it is
3944 possible that DEF_REGULAR is not set now but will be set
3945 later (it is never cleared). We account for that
3946 possibility below by storing information in the
3947 dyn_relocs field of the hash table entry. A similar
3948 situation occurs when creating shared libraries and symbol
3949 visibility changes render the symbol local.
3950
3951 If on the other hand, we are creating an executable, we
3952 may need to keep relocations for symbols satisfied by a
3953 dynamic library if we manage to avoid copy relocs for the
3954 symbol. */
3955 if ((info->shared
3956 && (sec->flags & SEC_ALLOC) != 0
3957 && (( r_type != R_M32R_26_PCREL_RELA
3958 && r_type != R_M32R_18_PCREL_RELA
3959 && r_type != R_M32R_10_PCREL_RELA
3960 && r_type != R_M32R_REL32)
3961 || (h != NULL
3962 && (! info->symbolic
3963 || h->root.type == bfd_link_hash_defweak
3964 || !h->def_regular))))
3965 || (!info->shared
3966 && (sec->flags & SEC_ALLOC) != 0
3967 && h != NULL
3968 && (h->root.type == bfd_link_hash_defweak
3969 || !h->def_regular)))
3970 {
3971 struct elf_m32r_dyn_relocs *p;
3972 struct elf_m32r_dyn_relocs **head;
3973
3974 if (dynobj == NULL)
3975 htab->root.dynobj = dynobj = abfd;
3976
3977 /* When creating a shared object, we must copy these
3978 relocs into the output file. We create a reloc
3979 section in dynobj and make room for the reloc. */
3980 if (sreloc == NULL)
3981 {
3982 const char *name;
3983
3984 name = (bfd_elf_string_from_elf_section
3985 (abfd,
3986 elf_elfheader (abfd)->e_shstrndx,
3987 elf_section_data (sec)->rel_hdr.sh_name));
3988 if (name == NULL)
3989 return FALSE;
3990
3991 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3992 && strcmp (bfd_get_section_name (abfd, sec),
3993 name + 5) == 0);
3994
3995 sreloc = bfd_get_section_by_name (dynobj, name);
3996 if (sreloc == NULL)
3997 {
3998 flagword flags;
3999
4000 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4001 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4002 if ((sec->flags & SEC_ALLOC) != 0)
4003 flags |= SEC_ALLOC | SEC_LOAD;
4004 sreloc = bfd_make_section_with_flags (dynobj,
4005 name,
4006 flags);
4007 if (sreloc == NULL
4008 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
4009 return FALSE;
4010 }
4011 elf_section_data (sec)->sreloc = sreloc;
4012 }
4013
4014 /* If this is a global symbol, we count the number of
4015 relocations we need for this symbol. */
4016 if (h != NULL)
4017 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
4018 else
4019 {
4020 asection *s;
4021 void *vpp;
4022
4023 /* Track dynamic relocs needed for local syms too. */
4024 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4025 sec, r_symndx);
4026 if (s == NULL)
4027 return FALSE;
4028
4029 vpp = &elf_section_data (s)->local_dynrel;
4030 head = (struct elf_m32r_dyn_relocs **) vpp;
4031 }
4032
4033 p = *head;
4034 if (p == NULL || p->sec != sec)
4035 {
4036 bfd_size_type amt = sizeof (*p);
4037
4038 p = bfd_alloc (dynobj, amt);
4039 if (p == NULL)
4040 return FALSE;
4041 p->next = *head;
4042 *head = p;
4043 p->sec = sec;
4044 p->count = 0;
4045 p->pc_count = 0;
4046 }
4047
4048 p->count += 1;
4049 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4050 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
4051 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
4052 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
4053 p->pc_count += 1;
4054 }
4055 break;
4056
4057 /* This relocation describes the C++ object vtable hierarchy.
4058 Reconstruct it for later use during GC. */
4059 case R_M32R_RELA_GNU_VTINHERIT:
4060 case R_M32R_GNU_VTINHERIT:
4061 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4062 return FALSE;
4063 break;
4064
4065 /* This relocation describes which C++ vtable entries are actually
4066 used. Record for later use during GC. */
4067 case R_M32R_GNU_VTENTRY:
4068 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4069 return FALSE;
4070 break;
4071 case R_M32R_RELA_GNU_VTENTRY:
4072 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4073 return FALSE;
4074 break;
4075 }
4076 }
4077
4078 return TRUE;
4079 }
4080
4081 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4082 {
4083 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4084 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4085 { NULL, 0, 0, 0, 0 }
4086 };
4087
4088 static bfd_boolean
4089 m32r_elf_fake_sections (bfd *abfd,
4090 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4091 asection *sec)
4092 {
4093 const char *name;
4094
4095 name = bfd_get_section_name (abfd, sec);
4096
4097 /* The generic elf_fake_sections will set up REL_HDR using the
4098 default kind of relocations. But, we may actually need both
4099 kinds of relocations, so we set up the second header here.
4100
4101 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4102 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4103 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4104 of the resulting empty .rela.<section> sections starts with
4105 sh_offset == object size, and ld doesn't allow that. While the check
4106 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4107 avoided by not emitting those useless sections in the first place. */
4108 if ((sec->flags & SEC_RELOC) != 0)
4109 {
4110 struct bfd_elf_section_data *esd;
4111 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4112
4113 esd = elf_section_data (sec);
4114 BFD_ASSERT (esd->rel_hdr2 == NULL);
4115 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4116 if (!esd->rel_hdr2)
4117 return FALSE;
4118 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4119 !sec->use_rela_p);
4120 }
4121
4122 return TRUE;
4123 }
4124
4125 static enum elf_reloc_type_class
4126 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4127 {
4128 switch ((int) ELF32_R_TYPE (rela->r_info))
4129 {
4130 case R_M32R_RELATIVE: return reloc_class_relative;
4131 case R_M32R_JMP_SLOT: return reloc_class_plt;
4132 case R_M32R_COPY: return reloc_class_copy;
4133 default: return reloc_class_normal;
4134 }
4135 }
4136 \f
4137 #define ELF_ARCH bfd_arch_m32r
4138 #define ELF_MACHINE_CODE EM_M32R
4139 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4140 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4141
4142 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4143 #define TARGET_BIG_NAME "elf32-m32r"
4144 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4145 #define TARGET_LITTLE_NAME "elf32-m32rle"
4146
4147 #define elf_info_to_howto m32r_info_to_howto
4148 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4149 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4150 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4151 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4152 #define elf_backend_relocate_section m32r_elf_relocate_section
4153 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4154 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4155 #define elf_backend_check_relocs m32r_elf_check_relocs
4156
4157 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4158 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4159 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4160 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4161 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4162 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4163 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4164 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4165
4166 #define elf_backend_can_gc_sections 1
4167 /*#if !USE_REL
4168 #define elf_backend_rela_normal 1
4169 #endif*/
4170 #define elf_backend_can_refcount 1
4171 #define elf_backend_want_got_plt 1
4172 #define elf_backend_plt_readonly 1
4173 #define elf_backend_want_plt_sym 0
4174 #define elf_backend_got_header_size 12
4175
4176 #define elf_backend_may_use_rel_p 1
4177 #ifdef USE_M32R_OLD_RELOC
4178 #define elf_backend_default_use_rela_p 0
4179 #define elf_backend_may_use_rela_p 0
4180 #else
4181 #define elf_backend_default_use_rela_p 1
4182 #define elf_backend_may_use_rela_p 1
4183 #define elf_backend_fake_sections m32r_elf_fake_sections
4184 #endif
4185
4186 #define elf_backend_object_p m32r_elf_object_p
4187 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4188 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4189 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4190 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4191 #define elf_backend_special_sections m32r_elf_special_sections
4192
4193 #include "elf32-target.h"
4194
4195 #undef ELF_MAXPAGESIZE
4196 #define ELF_MAXPAGESIZE 0x1000
4197
4198 #undef TARGET_BIG_SYM
4199 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4200 #undef TARGET_BIG_NAME
4201 #define TARGET_BIG_NAME "elf32-m32r-linux"
4202 #undef TARGET_LITTLE_SYM
4203 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4204 #undef TARGET_LITTLE_NAME
4205 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4206 #undef elf32_bed
4207 #define elf32_bed elf32_m32r_lin_bed
4208
4209 #include "elf32-target.h"
4210
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