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2009-06-12 Tristan Gingold <gingold@adacore.com>
[binutils.git] / bfd / elf32-m32r.c
blob96db6cbdff7b171186e86d5df9242dfbd5bc14f3
1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2008 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
21
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "elf/m32r.h"
27
28 #define NOP_INSN 0x7000
29 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
30
31 /* Use REL instead of RELA to save space.
32 This only saves space in libraries and object files, but perhaps
33 relocs will be put in ROM? All in all though, REL relocs are a pain
34 to work with. */
35 /* #define USE_REL 1
36
37 #ifndef USE_REL
38 #define USE_REL 0
39 #endif */
40 /* Use RELA. But use REL to link old objects for backwords compatibility. */
41
42 /* Functions for the M32R ELF linker. */
43
44 /* The name of the dynamic interpreter. This is put in the .interp
45 section. */
46
47 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
48
49 /* The nop opcode we use. */
50
51 #define M32R_NOP 0x7000f000
52
53 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
54
55 /* The size in bytes of an entry in the procedure linkage table. */
56
57 #define PLT_ENTRY_SIZE 20
58 #define PLT_HEADER_SIZE 20
59
60 /* The first one entries in a procedure linkage table are reserved,
61 and the initial contents are unimportant (we zero them out).
62 Subsequent entries look like this. */
63
64 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
65 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
66 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
67 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
68 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
69
70 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
71 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
72 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
73 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
74 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
75
76 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
77 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
78 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
79 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
80 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
81 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
82 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
83
84
85 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
86
87 static bfd_reloc_status_type
88 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
89 reloc_howto_type *howto,
90 asection *input_section,
91 bfd_byte *data,
92 bfd_vma offset,
93 asection *symbol_section ATTRIBUTE_UNUSED,
94 bfd_vma symbol_value,
95 bfd_vma addend)
96 {
97 bfd_signed_vma relocation;
98 unsigned long x;
99 bfd_reloc_status_type status;
100
101 /* Sanity check the address (offset in section). */
102 if (offset > bfd_get_section_limit (abfd, input_section))
103 return bfd_reloc_outofrange;
104
105 relocation = symbol_value + addend;
106 /* Make it pc relative. */
107 relocation -= (input_section->output_section->vma
108 + input_section->output_offset);
109 /* These jumps mask off the lower two bits of the current address
110 before doing pcrel calculations. */
111 relocation -= (offset & -(bfd_vma) 4);
112
113 if (relocation < -0x200 || relocation > 0x1ff)
114 status = bfd_reloc_overflow;
115 else
116 status = bfd_reloc_ok;
117
118 x = bfd_get_16 (abfd, data + offset);
119 relocation >>= howto->rightshift;
120 relocation <<= howto->bitpos;
121 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
122 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
123
124 return status;
125 }
126
127 /* Handle the R_M32R_10_PCREL reloc. */
128
129 static bfd_reloc_status_type
130 m32r_elf_10_pcrel_reloc (bfd * abfd,
131 arelent * reloc_entry,
132 asymbol * symbol,
133 void * data,
134 asection * input_section,
135 bfd * output_bfd,
136 char ** error_message ATTRIBUTE_UNUSED)
137 {
138 /* This part is from bfd_elf_generic_reloc. */
139 if (output_bfd != NULL
140 && (symbol->flags & BSF_SECTION_SYM) == 0
141 && (! reloc_entry->howto->partial_inplace
142 || reloc_entry->addend == 0))
143 {
144 reloc_entry->address += input_section->output_offset;
145 return bfd_reloc_ok;
146 }
147
148 if (output_bfd != NULL)
149 /* FIXME: See bfd_perform_relocation. Is this right? */
150 return bfd_reloc_continue;
151
152 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
153 input_section,
154 data, reloc_entry->address,
155 symbol->section,
156 (symbol->value
157 + symbol->section->output_section->vma
158 + symbol->section->output_offset),
159 reloc_entry->addend);
160 }
161
162 /* Do generic partial_inplace relocation.
163 This is a local replacement for bfd_elf_generic_reloc. */
164
165 static bfd_reloc_status_type
166 m32r_elf_generic_reloc (bfd *input_bfd,
167 arelent *reloc_entry,
168 asymbol *symbol,
169 void * data,
170 asection *input_section,
171 bfd *output_bfd,
172 char **error_message ATTRIBUTE_UNUSED)
173 {
174 bfd_reloc_status_type ret;
175 bfd_vma relocation;
176 bfd_byte *inplace_address;
177
178 /* This part is from bfd_elf_generic_reloc.
179 If we're relocating, and this an external symbol, we don't want
180 to change anything. */
181 if (output_bfd != NULL
182 && (symbol->flags & BSF_SECTION_SYM) == 0
183 && reloc_entry->addend == 0)
184 {
185 reloc_entry->address += input_section->output_offset;
186 return bfd_reloc_ok;
187 }
188
189 /* Now do the reloc in the usual way.
190 ??? It would be nice to call bfd_elf_generic_reloc here,
191 but we have partial_inplace set. bfd_elf_generic_reloc will
192 pass the handling back to bfd_install_relocation which will install
193 a section relative addend which is wrong. */
194
195 /* Sanity check the address (offset in section). */
196 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
197 return bfd_reloc_outofrange;
198
199 ret = bfd_reloc_ok;
200 if (bfd_is_und_section (symbol->section)
201 && output_bfd == NULL)
202 ret = bfd_reloc_undefined;
203
204 if (bfd_is_com_section (symbol->section)
205 || output_bfd != NULL)
206 relocation = 0;
207 else
208 relocation = symbol->value;
209
210 /* Only do this for a final link. */
211 if (output_bfd == NULL)
212 {
213 relocation += symbol->section->output_section->vma;
214 relocation += symbol->section->output_offset;
215 }
216
217 relocation += reloc_entry->addend;
218 inplace_address = (bfd_byte *) data + reloc_entry->address;
219
220 #define DOIT(x) \
221 x = ( (x & ~reloc_entry->howto->dst_mask) | \
222 (((x & reloc_entry->howto->src_mask) + relocation) & \
223 reloc_entry->howto->dst_mask))
224
225 switch (reloc_entry->howto->size)
226 {
227 case 1:
228 {
229 short x = bfd_get_16 (input_bfd, inplace_address);
230 DOIT (x);
231 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
232 }
233 break;
234 case 2:
235 {
236 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
237 DOIT (x);
238 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
239 }
240 break;
241 default:
242 BFD_ASSERT (0);
243 }
244
245 if (output_bfd != NULL)
246 reloc_entry->address += input_section->output_offset;
247
248 return ret;
249 }
250
251 /* Handle the R_M32R_SDA16 reloc.
252 This reloc is used to compute the address of objects in the small data area
253 and to perform loads and stores from that area.
254 The lower 16 bits are sign extended and added to the register specified
255 in the instruction, which is assumed to point to _SDA_BASE_. */
256
257 static bfd_reloc_status_type
258 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
259 arelent *reloc_entry,
260 asymbol *symbol,
261 void * data ATTRIBUTE_UNUSED,
262 asection *input_section,
263 bfd *output_bfd,
264 char **error_message ATTRIBUTE_UNUSED)
265 {
266 /* This part is from bfd_elf_generic_reloc. */
267 if (output_bfd != NULL
268 && (symbol->flags & BSF_SECTION_SYM) == 0
269 && (! reloc_entry->howto->partial_inplace
270 || reloc_entry->addend == 0))
271 {
272 reloc_entry->address += input_section->output_offset;
273 return bfd_reloc_ok;
274 }
275
276 if (output_bfd != NULL)
277 /* FIXME: See bfd_perform_relocation. Is this right? */
278 return bfd_reloc_continue;
279
280 /* FIXME: not sure what to do here yet. But then again, the linker
281 may never call us. */
282 abort ();
283 }
284
285 \f
286 /* Handle the R_M32R_HI16_[SU]LO relocs.
287 HI16_SLO is for the add3 and load/store with displacement instructions.
288 HI16_ULO is for the or3 instruction.
289 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
290 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
291 we must add one to the high 16 bytes (which will get subtracted off when
292 the low 16 bits are added).
293 These relocs have to be done in combination with an R_M32R_LO16 reloc
294 because there is a carry from the LO16 to the HI16. Here we just save
295 the information we need; we do the actual relocation when we see the LO16.
296 This code is copied from the elf32-mips.c. We also support an arbitrary
297 number of HI16 relocs to be associated with a single LO16 reloc. The
298 assembler sorts the relocs to ensure each HI16 immediately precedes its
299 LO16. However if there are multiple copies, the assembler may not find
300 the real LO16 so it picks the first one it finds. */
301
302 struct m32r_hi16
303 {
304 struct m32r_hi16 *next;
305 bfd_byte *addr;
306 bfd_vma addend;
307 };
308
309 /* FIXME: This should not be a static variable. */
310
311 static struct m32r_hi16 *m32r_hi16_list;
312
313 static bfd_reloc_status_type
314 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
315 arelent *reloc_entry,
316 asymbol *symbol,
317 void * data,
318 asection *input_section,
319 bfd *output_bfd,
320 char **error_message ATTRIBUTE_UNUSED)
321 {
322 bfd_reloc_status_type ret;
323 bfd_vma relocation;
324 struct m32r_hi16 *n;
325
326 /* This part is from bfd_elf_generic_reloc.
327 If we're relocating, and this an external symbol, we don't want
328 to change anything. */
329 if (output_bfd != NULL
330 && (symbol->flags & BSF_SECTION_SYM) == 0
331 && reloc_entry->addend == 0)
332 {
333 reloc_entry->address += input_section->output_offset;
334 return bfd_reloc_ok;
335 }
336
337 /* Sanity check the address (offset in section). */
338 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
339 return bfd_reloc_outofrange;
340
341 ret = bfd_reloc_ok;
342 if (bfd_is_und_section (symbol->section)
343 && output_bfd == NULL)
344 ret = bfd_reloc_undefined;
345
346 if (bfd_is_com_section (symbol->section))
347 relocation = 0;
348 else
349 relocation = symbol->value;
350
351 relocation += symbol->section->output_section->vma;
352 relocation += symbol->section->output_offset;
353 relocation += reloc_entry->addend;
354
355 /* Save the information, and let LO16 do the actual relocation. */
356 n = bfd_malloc ((bfd_size_type) sizeof *n);
357 if (n == NULL)
358 return bfd_reloc_outofrange;
359 n->addr = (bfd_byte *) data + reloc_entry->address;
360 n->addend = relocation;
361 n->next = m32r_hi16_list;
362 m32r_hi16_list = n;
363
364 if (output_bfd != NULL)
365 reloc_entry->address += input_section->output_offset;
366
367 return ret;
368 }
369
370 /* Handle an M32R ELF HI16 reloc. */
371
372 static void
373 m32r_elf_relocate_hi16 (bfd *input_bfd,
374 int type,
375 Elf_Internal_Rela *relhi,
376 Elf_Internal_Rela *rello,
377 bfd_byte *contents,
378 bfd_vma addend)
379 {
380 unsigned long insn;
381 bfd_vma addlo;
382
383 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
384
385 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
386 if (type == R_M32R_HI16_SLO)
387 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
388 else
389 addlo &= 0xffff;
390
391 addend += ((insn & 0xffff) << 16) + addlo;
392
393 /* Reaccount for sign extension of low part. */
394 if (type == R_M32R_HI16_SLO
395 && (addend & 0x8000) != 0)
396 addend += 0x10000;
397
398 bfd_put_32 (input_bfd,
399 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
400 contents + relhi->r_offset);
401 }
402
403 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
404 inplace relocation; this function exists in order to do the
405 R_M32R_HI16_[SU]LO relocation described above. */
406
407 static bfd_reloc_status_type
408 m32r_elf_lo16_reloc (bfd *input_bfd,
409 arelent *reloc_entry,
410 asymbol *symbol,
411 void * data,
412 asection *input_section,
413 bfd *output_bfd,
414 char **error_message)
415 {
416 /* This part is from bfd_elf_generic_reloc.
417 If we're relocating, and this an external symbol, we don't want
418 to change anything. */
419 if (output_bfd != NULL
420 && (symbol->flags & BSF_SECTION_SYM) == 0
421 && reloc_entry->addend == 0)
422 {
423 reloc_entry->address += input_section->output_offset;
424 return bfd_reloc_ok;
425 }
426
427 if (m32r_hi16_list != NULL)
428 {
429 struct m32r_hi16 *l;
430
431 l = m32r_hi16_list;
432 while (l != NULL)
433 {
434 unsigned long insn;
435 unsigned long val;
436 unsigned long vallo;
437 struct m32r_hi16 *next;
438
439 /* Do the HI16 relocation. Note that we actually don't need
440 to know anything about the LO16 itself, except where to
441 find the low 16 bits of the addend needed by the LO16. */
442 insn = bfd_get_32 (input_bfd, l->addr);
443 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
444 & 0xffff) ^ 0x8000) - 0x8000;
445 val = ((insn & 0xffff) << 16) + vallo;
446 val += l->addend;
447
448 /* Reaccount for sign extension of low part. */
449 if ((val & 0x8000) != 0)
450 val += 0x10000;
451
452 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
453 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
454
455 next = l->next;
456 free (l);
457 l = next;
458 }
459
460 m32r_hi16_list = NULL;
461 }
462
463 /* Now do the LO16 reloc in the usual way.
464 ??? It would be nice to call bfd_elf_generic_reloc here,
465 but we have partial_inplace set. bfd_elf_generic_reloc will
466 pass the handling back to bfd_install_relocation which will install
467 a section relative addend which is wrong. */
468 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
469 input_section, output_bfd, error_message);
470 }
471
472 \f
473 static reloc_howto_type m32r_elf_howto_table[] =
474 {
475 /* This reloc does nothing. */
476 HOWTO (R_M32R_NONE, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 32, /* bitsize */
480 FALSE, /* pc_relative */
481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_M32R_NONE", /* name */
485 FALSE, /* partial_inplace */
486 0, /* src_mask */
487 0, /* dst_mask */
488 FALSE), /* pcrel_offset */
489
490 /* A 16 bit absolute relocation. */
491 HOWTO (R_M32R_16, /* type */
492 0, /* rightshift */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
494 16, /* bitsize */
495 FALSE, /* pc_relative */
496 0, /* bitpos */
497 complain_overflow_bitfield, /* complain_on_overflow */
498 m32r_elf_generic_reloc,/* special_function */
499 "R_M32R_16", /* name */
500 TRUE, /* partial_inplace */
501 0xffff, /* src_mask */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
504
505 /* A 32 bit absolute relocation. */
506 HOWTO (R_M32R_32, /* type */
507 0, /* rightshift */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
509 32, /* bitsize */
510 FALSE, /* pc_relative */
511 0, /* bitpos */
512 complain_overflow_bitfield, /* complain_on_overflow */
513 m32r_elf_generic_reloc,/* special_function */
514 "R_M32R_32", /* name */
515 TRUE, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
519
520 /* A 24 bit address. */
521 HOWTO (R_M32R_24, /* type */
522 0, /* rightshift */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
524 24, /* bitsize */
525 FALSE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_unsigned, /* complain_on_overflow */
528 m32r_elf_generic_reloc,/* special_function */
529 "R_M32R_24", /* name */
530 TRUE, /* partial_inplace */
531 0xffffff, /* src_mask */
532 0xffffff, /* dst_mask */
533 FALSE), /* pcrel_offset */
534
535 /* An PC Relative 10-bit relocation, shifted by 2.
536 This reloc is complicated because relocations are relative to pc & -4.
537 i.e. branches in the right insn slot use the address of the left insn
538 slot for pc. */
539 /* ??? It's not clear whether this should have partial_inplace set or not.
540 Branch relaxing in the assembler can store the addend in the insn,
541 and if bfd_install_relocation gets called the addend may get added
542 again. */
543 HOWTO (R_M32R_10_PCREL, /* type */
544 2, /* rightshift */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
546 10, /* bitsize */
547 TRUE, /* pc_relative */
548 0, /* bitpos */
549 complain_overflow_signed, /* complain_on_overflow */
550 m32r_elf_10_pcrel_reloc, /* special_function */
551 "R_M32R_10_PCREL", /* name */
552 FALSE, /* partial_inplace */
553 0xff, /* src_mask */
554 0xff, /* dst_mask */
555 TRUE), /* pcrel_offset */
556
557 /* A relative 18 bit relocation, right shifted by 2. */
558 HOWTO (R_M32R_18_PCREL, /* type */
559 2, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 16, /* bitsize */
562 TRUE, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_M32R_18_PCREL", /* name */
567 FALSE, /* partial_inplace */
568 0xffff, /* src_mask */
569 0xffff, /* dst_mask */
570 TRUE), /* pcrel_offset */
571
572 /* A relative 26 bit relocation, right shifted by 2. */
573 /* ??? It's not clear whether this should have partial_inplace set or not.
574 Branch relaxing in the assembler can store the addend in the insn,
575 and if bfd_install_relocation gets called the addend may get added
576 again. */
577 HOWTO (R_M32R_26_PCREL, /* type */
578 2, /* rightshift */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
580 26, /* bitsize */
581 TRUE, /* pc_relative */
582 0, /* bitpos */
583 complain_overflow_signed, /* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_M32R_26_PCREL", /* name */
586 FALSE, /* partial_inplace */
587 0xffffff, /* src_mask */
588 0xffffff, /* dst_mask */
589 TRUE), /* pcrel_offset */
590
591 /* High 16 bits of address when lower 16 is or'd in. */
592 HOWTO (R_M32R_HI16_ULO, /* type */
593 16, /* rightshift */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
595 16, /* bitsize */
596 FALSE, /* pc_relative */
597 0, /* bitpos */
598 complain_overflow_dont, /* complain_on_overflow */
599 m32r_elf_hi16_reloc, /* special_function */
600 "R_M32R_HI16_ULO", /* name */
601 TRUE, /* partial_inplace */
602 0x0000ffff, /* src_mask */
603 0x0000ffff, /* dst_mask */
604 FALSE), /* pcrel_offset */
605
606 /* High 16 bits of address when lower 16 is added in. */
607 HOWTO (R_M32R_HI16_SLO, /* type */
608 16, /* rightshift */
609 2, /* size (0 = byte, 1 = short, 2 = long) */
610 16, /* bitsize */
611 FALSE, /* pc_relative */
612 0, /* bitpos */
613 complain_overflow_dont, /* complain_on_overflow */
614 m32r_elf_hi16_reloc, /* special_function */
615 "R_M32R_HI16_SLO", /* name */
616 TRUE, /* partial_inplace */
617 0x0000ffff, /* src_mask */
618 0x0000ffff, /* dst_mask */
619 FALSE), /* pcrel_offset */
620
621 /* Lower 16 bits of address. */
622 HOWTO (R_M32R_LO16, /* type */
623 0, /* rightshift */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
625 16, /* bitsize */
626 FALSE, /* pc_relative */
627 0, /* bitpos */
628 complain_overflow_dont, /* complain_on_overflow */
629 m32r_elf_lo16_reloc, /* special_function */
630 "R_M32R_LO16", /* name */
631 TRUE, /* partial_inplace */
632 0x0000ffff, /* src_mask */
633 0x0000ffff, /* dst_mask */
634 FALSE), /* pcrel_offset */
635
636 /* Small data area 16 bits offset. */
637 HOWTO (R_M32R_SDA16, /* type */
638 0, /* rightshift */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
640 16, /* bitsize */
641 FALSE, /* pc_relative */
642 0, /* bitpos */
643 complain_overflow_signed, /* complain_on_overflow */
644 m32r_elf_sda16_reloc, /* special_function */
645 "R_M32R_SDA16", /* name */
646 TRUE, /* partial_inplace */ /* FIXME: correct? */
647 0x0000ffff, /* src_mask */
648 0x0000ffff, /* dst_mask */
649 FALSE), /* pcrel_offset */
650
651 /* GNU extension to record C++ vtable hierarchy. */
652 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
653 0, /* rightshift */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
655 0, /* bitsize */
656 FALSE, /* pc_relative */
657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
659 NULL, /* special_function */
660 "R_M32R_GNU_VTINHERIT", /* name */
661 FALSE, /* partial_inplace */
662 0, /* src_mask */
663 0, /* dst_mask */
664 FALSE), /* pcrel_offset */
665
666 /* GNU extension to record C++ vtable member usage. */
667 HOWTO (R_M32R_GNU_VTENTRY, /* type */
668 0, /* rightshift */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
670 0, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
675 "R_M32R_GNU_VTENTRY", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 EMPTY_HOWTO (13),
682 EMPTY_HOWTO (14),
683 EMPTY_HOWTO (15),
684 EMPTY_HOWTO (16),
685 EMPTY_HOWTO (17),
686 EMPTY_HOWTO (18),
687 EMPTY_HOWTO (19),
688 EMPTY_HOWTO (20),
689 EMPTY_HOWTO (21),
690 EMPTY_HOWTO (22),
691 EMPTY_HOWTO (23),
692 EMPTY_HOWTO (24),
693 EMPTY_HOWTO (25),
694 EMPTY_HOWTO (26),
695 EMPTY_HOWTO (27),
696 EMPTY_HOWTO (28),
697 EMPTY_HOWTO (29),
698 EMPTY_HOWTO (30),
699 EMPTY_HOWTO (31),
700 EMPTY_HOWTO (32),
701
702 /* A 16 bit absolute relocation. */
703 HOWTO (R_M32R_16_RELA, /* type */
704 0, /* rightshift */
705 1, /* size (0 = byte, 1 = short, 2 = long) */
706 16, /* bitsize */
707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_bitfield, /* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
711 "R_M32R_16_RELA", /* name */
712 FALSE, /* partial_inplace */
713 0xffff, /* src_mask */
714 0xffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
716
717 /* A 32 bit absolute relocation. */
718 HOWTO (R_M32R_32_RELA, /* type */
719 0, /* rightshift */
720 2, /* size (0 = byte, 1 = short, 2 = long) */
721 32, /* bitsize */
722 FALSE, /* pc_relative */
723 0, /* bitpos */
724 complain_overflow_bitfield, /* complain_on_overflow */
725 bfd_elf_generic_reloc,/* special_function */
726 "R_M32R_32_RELA", /* name */
727 FALSE, /* partial_inplace */
728 0xffffffff, /* src_mask */
729 0xffffffff, /* dst_mask */
730 FALSE), /* pcrel_offset */
731
732 /* A 24 bit address. */
733 HOWTO (R_M32R_24_RELA, /* type */
734 0, /* rightshift */
735 2, /* size (0 = byte, 1 = short, 2 = long) */
736 24, /* bitsize */
737 FALSE, /* pc_relative */
738 0, /* bitpos */
739 complain_overflow_unsigned, /* complain_on_overflow */
740 bfd_elf_generic_reloc,/* special_function */
741 "R_M32R_24_RELA", /* name */
742 FALSE, /* partial_inplace */
743 0xffffff, /* src_mask */
744 0xffffff, /* dst_mask */
745 FALSE), /* pcrel_offset */
746
747 HOWTO (R_M32R_10_PCREL_RELA, /* type */
748 2, /* rightshift */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
750 10, /* bitsize */
751 TRUE, /* pc_relative */
752 0, /* bitpos */
753 complain_overflow_signed, /* complain_on_overflow */
754 m32r_elf_10_pcrel_reloc, /* special_function */
755 "R_M32R_10_PCREL_RELA",/* name */
756 FALSE, /* partial_inplace */
757 0xff, /* src_mask */
758 0xff, /* dst_mask */
759 TRUE), /* pcrel_offset */
760
761 /* A relative 18 bit relocation, right shifted by 2. */
762 HOWTO (R_M32R_18_PCREL_RELA, /* type */
763 2, /* rightshift */
764 2, /* size (0 = byte, 1 = short, 2 = long) */
765 16, /* bitsize */
766 TRUE, /* pc_relative */
767 0, /* bitpos */
768 complain_overflow_signed, /* complain_on_overflow */
769 bfd_elf_generic_reloc, /* special_function */
770 "R_M32R_18_PCREL_RELA",/* name */
771 FALSE, /* partial_inplace */
772 0xffff, /* src_mask */
773 0xffff, /* dst_mask */
774 TRUE), /* pcrel_offset */
775
776 /* A relative 26 bit relocation, right shifted by 2. */
777 HOWTO (R_M32R_26_PCREL_RELA, /* type */
778 2, /* rightshift */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
780 26, /* bitsize */
781 TRUE, /* pc_relative */
782 0, /* bitpos */
783 complain_overflow_signed, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
785 "R_M32R_26_PCREL_RELA",/* name */
786 FALSE, /* partial_inplace */
787 0xffffff, /* src_mask */
788 0xffffff, /* dst_mask */
789 TRUE), /* pcrel_offset */
790
791 /* High 16 bits of address when lower 16 is or'd in. */
792 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
793 16, /* rightshift */
794 2, /* size (0 = byte, 1 = short, 2 = long) */
795 16, /* bitsize */
796 FALSE, /* pc_relative */
797 0, /* bitpos */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_M32R_HI16_ULO_RELA",/* name */
801 FALSE, /* partial_inplace */
802 0x0000ffff, /* src_mask */
803 0x0000ffff, /* dst_mask */
804 FALSE), /* pcrel_offset */
805
806 /* High 16 bits of address when lower 16 is added in. */
807 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
808 16, /* rightshift */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
810 16, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_M32R_HI16_SLO_RELA",/* name */
816 FALSE, /* partial_inplace */
817 0x0000ffff, /* src_mask */
818 0x0000ffff, /* dst_mask */
819 FALSE), /* pcrel_offset */
820
821 /* Lower 16 bits of address. */
822 HOWTO (R_M32R_LO16_RELA, /* type */
823 0, /* rightshift */
824 2, /* size (0 = byte, 1 = short, 2 = long) */
825 16, /* bitsize */
826 FALSE, /* pc_relative */
827 0, /* bitpos */
828 complain_overflow_dont, /* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_M32R_LO16_RELA", /* name */
831 FALSE, /* partial_inplace */
832 0x0000ffff, /* src_mask */
833 0x0000ffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
835
836 /* Small data area 16 bits offset. */
837 HOWTO (R_M32R_SDA16_RELA, /* type */
838 0, /* rightshift */
839 2, /* size (0 = byte, 1 = short, 2 = long) */
840 16, /* bitsize */
841 FALSE, /* pc_relative */
842 0, /* bitpos */
843 complain_overflow_signed, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_M32R_SDA16_RELA", /* name */
846 TRUE, /* partial_inplace */ /* FIXME: correct? */
847 0x0000ffff, /* src_mask */
848 0x0000ffff, /* dst_mask */
849 FALSE), /* pcrel_offset */
850
851 /* GNU extension to record C++ vtable hierarchy. */
852 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
853 0, /* rightshift */
854 2, /* size (0 = byte, 1 = short, 2 = long) */
855 0, /* bitsize */
856 FALSE, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 NULL, /* special_function */
860 "R_M32R_RELA_GNU_VTINHERIT", /* name */
861 FALSE, /* partial_inplace */
862 0, /* src_mask */
863 0, /* dst_mask */
864 FALSE), /* pcrel_offset */
865
866 /* GNU extension to record C++ vtable member usage. */
867 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
868 0, /* rightshift */
869 2, /* size (0 = byte, 1 = short, 2 = long) */
870 0, /* bitsize */
871 FALSE, /* pc_relative */
872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
874 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
875 "R_M32R_RELA_GNU_VTENTRY", /* name */
876 FALSE, /* partial_inplace */
877 0, /* src_mask */
878 0, /* dst_mask */
879 FALSE), /* pcrel_offset */
880
881 /* A 32 bit PC relative relocation. */
882 HOWTO (R_M32R_REL32, /* type */
883 0, /* rightshift */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
885 32, /* bitsize */
886 TRUE, /* pc_relative */
887 0, /* bitpos */
888 complain_overflow_bitfield, /* complain_on_overflow */
889 bfd_elf_generic_reloc,/* special_function */
890 "R_M32R_REL32", /* name */
891 FALSE, /* partial_inplace */
892 0xffffffff, /* src_mask */
893 0xffffffff, /* dst_mask */
894 TRUE), /* pcrel_offset */
895
896 EMPTY_HOWTO (46),
897 EMPTY_HOWTO (47),
898
899 /* Like R_M32R_24, but referring to the GOT table entry for
900 the symbol. */
901 HOWTO (R_M32R_GOT24, /* type */
902 0, /* rightshift */
903 2, /* size (0 = byte, 1 = short, 2 = long) */
904 24, /* bitsize */
905 FALSE, /* pc_relative */
906 0, /* bitpos */
907 complain_overflow_unsigned, /* complain_on_overflow */
908 bfd_elf_generic_reloc, /* special_function */
909 "R_M32R_GOT24", /* name */
910 FALSE, /* partial_inplace */
911 0xffffff, /* src_mask */
912 0xffffff, /* dst_mask */
913 FALSE), /* pcrel_offset */
914
915 /* Like R_M32R_PCREL, but referring to the procedure linkage table
916 entry for the symbol. */
917 HOWTO (R_M32R_26_PLTREL, /* type */
918 2, /* rightshift */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
920 24, /* bitsize */
921 TRUE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_signed, /* complain_on_overflow */
924 bfd_elf_generic_reloc, /* special_function */
925 "R_M32R_26_PLTREL", /* name */
926 FALSE, /* partial_inplace */
927 0xffffff, /* src_mask */
928 0xffffff, /* dst_mask */
929 TRUE), /* pcrel_offset */
930
931 /* This is used only by the dynamic linker. The symbol should exist
932 both in the object being run and in some shared library. The
933 dynamic linker copies the data addressed by the symbol from the
934 shared library into the object, because the object being
935 run has to have the data at some particular address. */
936 HOWTO (R_M32R_COPY, /* type */
937 0, /* rightshift */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
939 32, /* bitsize */
940 FALSE, /* pc_relative */
941 0, /* bitpos */
942 complain_overflow_bitfield, /* complain_on_overflow */
943 bfd_elf_generic_reloc, /* special_function */
944 "R_M32R_COPY", /* name */
945 FALSE, /* partial_inplace */
946 0xffffffff, /* src_mask */
947 0xffffffff, /* dst_mask */
948 FALSE), /* pcrel_offset */
949
950 /* Like R_M32R_24, but used when setting global offset table
951 entries. */
952 HOWTO (R_M32R_GLOB_DAT, /* type */
953 0, /* rightshift */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
955 32, /* bitsize */
956 FALSE, /* pc_relative */
957 0, /* bitpos */
958 complain_overflow_bitfield, /* complain_on_overflow */
959 bfd_elf_generic_reloc, /* special_function */
960 "R_M32R_GLOB_DAT", /* name */
961 FALSE, /* partial_inplace */
962 0xffffffff, /* src_mask */
963 0xffffffff, /* dst_mask */
964 FALSE), /* pcrel_offset */
965
966 /* Marks a procedure linkage table entry for a symbol. */
967 HOWTO (R_M32R_JMP_SLOT, /* type */
968 0, /* rightshift */
969 2, /* size (0 = byte, 1 = short, 2 = long) */
970 32, /* bitsize */
971 FALSE, /* pc_relative */
972 0, /* bitpos */
973 complain_overflow_bitfield, /* complain_on_overflow */
974 bfd_elf_generic_reloc, /* special_function */
975 "R_M32R_JMP_SLOT", /* name */
976 FALSE, /* partial_inplace */
977 0xffffffff, /* src_mask */
978 0xffffffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
980
981 /* Used only by the dynamic linker. When the object is run, this
982 longword is set to the load address of the object, plus the
983 addend. */
984 HOWTO (R_M32R_RELATIVE, /* type */
985 0, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 32, /* bitsize */
988 FALSE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_bitfield, /* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_M32R_RELATIVE", /* name */
993 FALSE, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 FALSE), /* pcrel_offset */
997
998 HOWTO (R_M32R_GOTOFF, /* type */
999 0, /* rightshift */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 24, /* bitsize */
1002 FALSE, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_bitfield, /* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_M32R_GOTOFF", /* name */
1007 FALSE, /* partial_inplace */
1008 0xffffff, /* src_mask */
1009 0xffffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1011
1012 /* An PC Relative 24-bit relocation used when setting PIC offset
1013 table register. */
1014 HOWTO (R_M32R_GOTPC24, /* type */
1015 0, /* rightshift */
1016 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 24, /* bitsize */
1018 TRUE, /* pc_relative */
1019 0, /* bitpos */
1020 complain_overflow_unsigned, /* complain_on_overflow */
1021 bfd_elf_generic_reloc, /* special_function */
1022 "R_M32R_GOTPC24", /* name */
1023 FALSE, /* partial_inplace */
1024 0xffffff, /* src_mask */
1025 0xffffff, /* dst_mask */
1026 TRUE), /* pcrel_offset */
1027
1028 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1029 the symbol. */
1030 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1031 16, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 16, /* bitsize */
1034 FALSE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_dont, /* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_M32R_GOT16_HI_ULO", /* name */
1039 FALSE, /* partial_inplace */
1040 0x0000ffff, /* src_mask */
1041 0x0000ffff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1043
1044 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1045 the symbol. */
1046 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1047 16, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 16, /* bitsize */
1050 FALSE, /* pc_relative */
1051 0, /* bitpos */
1052 complain_overflow_dont, /* complain_on_overflow */
1053 bfd_elf_generic_reloc, /* special_function */
1054 "R_M32R_GOT16_HI_SLO", /* name */
1055 FALSE, /* partial_inplace */
1056 0x0000ffff, /* src_mask */
1057 0x0000ffff, /* dst_mask */
1058 FALSE), /* pcrel_offset */
1059
1060 /* Like R_M32R_LO16, but referring to the GOT table entry for
1061 the symbol. */
1062 HOWTO (R_M32R_GOT16_LO, /* type */
1063 0, /* rightshift */
1064 2, /* size (0 = byte, 1 = short, 2 = long) */
1065 16, /* bitsize */
1066 FALSE, /* pc_relative */
1067 0, /* bitpos */
1068 complain_overflow_dont, /* complain_on_overflow */
1069 bfd_elf_generic_reloc, /* special_function */
1070 "R_M32R_GOT16_LO", /* name */
1071 FALSE, /* partial_inplace */
1072 0x0000ffff, /* src_mask */
1073 0x0000ffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1075
1076 /* An PC Relative relocation used when setting PIC offset table register.
1077 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1078 the symbol. */
1079 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1080 16, /* rightshift */
1081 2, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 bfd_elf_generic_reloc, /* special_function */
1087 "R_M32R_GOTPC_HI_ULO", /* name */
1088 FALSE, /* partial_inplace */
1089 0x0000ffff, /* src_mask */
1090 0x0000ffff, /* dst_mask */
1091 TRUE), /* pcrel_offset */
1092
1093 /* An PC Relative relocation used when setting PIC offset table register.
1094 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1095 the symbol. */
1096 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1097 16, /* rightshift */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 16, /* bitsize */
1100 FALSE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont, /* complain_on_overflow */
1103 bfd_elf_generic_reloc, /* special_function */
1104 "R_M32R_GOTPC_HI_SLO", /* name */
1105 FALSE, /* partial_inplace */
1106 0x0000ffff, /* src_mask */
1107 0x0000ffff, /* dst_mask */
1108 TRUE), /* pcrel_offset */
1109
1110 /* An PC Relative relocation used when setting PIC offset table register.
1111 Like R_M32R_LO16, but referring to the GOT table entry for
1112 the symbol. */
1113 HOWTO (R_M32R_GOTPC_LO, /* type */
1114 0, /* rightshift */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 16, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont, /* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 "R_M32R_GOTPC_LO", /* name */
1122 FALSE, /* partial_inplace */
1123 0x0000ffff, /* src_mask */
1124 0x0000ffff, /* dst_mask */
1125 TRUE), /* pcrel_offset */
1126
1127 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1128 16, /* rightshift */
1129 2, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont, /* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_M32R_GOTOFF_HI_ULO",/* name */
1136 FALSE, /* partial_inplace */
1137 0x0000ffff, /* src_mask */
1138 0x0000ffff, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1140
1141 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1142 16, /* rightshift */
1143 2, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 bfd_elf_generic_reloc, /* special_function */
1149 "R_M32R_GOTOFF_HI_SLO",/* name */
1150 FALSE, /* partial_inplace */
1151 0x0000ffff, /* src_mask */
1152 0x0000ffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1154
1155 HOWTO (R_M32R_GOTOFF_LO, /* type */
1156 0, /* rightshift */
1157 2, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 bfd_elf_generic_reloc, /* special_function */
1163 "R_M32R_GOTOFF_LO", /* name */
1164 FALSE, /* partial_inplace */
1165 0x0000ffff, /* src_mask */
1166 0x0000ffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168 };
1169
1170 /* Map BFD reloc types to M32R ELF reloc types. */
1171
1172 struct m32r_reloc_map
1173 {
1174 bfd_reloc_code_real_type bfd_reloc_val;
1175 unsigned char elf_reloc_val;
1176 };
1177
1178 #ifdef USE_M32R_OLD_RELOC
1179 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1180 {
1181 { BFD_RELOC_NONE, R_M32R_NONE },
1182 { BFD_RELOC_16, R_M32R_16 },
1183 { BFD_RELOC_32, R_M32R_32 },
1184 { BFD_RELOC_M32R_24, R_M32R_24 },
1185 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1186 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1187 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1188 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1189 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1190 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1191 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1192 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1193 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1194 };
1195 #else
1196 static const struct m32r_reloc_map m32r_reloc_map[] =
1197 {
1198 { BFD_RELOC_NONE, R_M32R_NONE },
1199 { BFD_RELOC_16, R_M32R_16_RELA },
1200 { BFD_RELOC_32, R_M32R_32_RELA },
1201 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1202 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1203 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1204 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1205 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1206 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1207 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1208 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1209 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1210 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1211 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1212
1213 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1214 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1215 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1216 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1217 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1218 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1219 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1220 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1221 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1222 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1223 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1224 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1225 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1226 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1228 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1229 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1230 };
1231 #endif
1232
1233 static reloc_howto_type *
1234 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1235 bfd_reloc_code_real_type code)
1236 {
1237 unsigned int i;
1238
1239 #ifdef USE_M32R_OLD_RELOC
1240 for (i = 0;
1241 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1242 i++)
1243 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1244 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1245
1246 #else /* ! USE_M32R_OLD_RELOC */
1247
1248 for (i = 0;
1249 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1250 i++)
1251 if (m32r_reloc_map[i].bfd_reloc_val == code)
1252 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1253 #endif
1254
1255 return NULL;
1256 }
1257
1258 static reloc_howto_type *
1259 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1260 const char *r_name)
1261 {
1262 unsigned int i;
1263
1264 for (i = 0;
1265 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
1266 i++)
1267 if (m32r_elf_howto_table[i].name != NULL
1268 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
1269 return &m32r_elf_howto_table[i];
1270
1271 return NULL;
1272 }
1273
1274 /* Set the howto pointer for an M32R ELF reloc. */
1275
1276 static void
1277 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1278 arelent *cache_ptr,
1279 Elf_Internal_Rela *dst)
1280 {
1281 unsigned int r_type;
1282
1283 r_type = ELF32_R_TYPE (dst->r_info);
1284 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1285 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1286 }
1287
1288 static void
1289 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1290 arelent *cache_ptr,
1291 Elf_Internal_Rela *dst)
1292 {
1293 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1294 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1295 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1296 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1297 }
1298
1299 \f
1300 /* Given a BFD section, try to locate the corresponding ELF section
1301 index. */
1302
1303 static bfd_boolean
1304 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1305 asection *sec,
1306 int *retval)
1307 {
1308 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1309 {
1310 *retval = SHN_M32R_SCOMMON;
1311 return TRUE;
1312 }
1313 return FALSE;
1314 }
1315
1316 /* M32R ELF uses two common sections. One is the usual one, and the other
1317 is for small objects. All the small objects are kept together, and then
1318 referenced via one register, which yields faster assembler code. It is
1319 up to the compiler to emit an instruction to load the register with
1320 _SDA_BASE. This is what we use for the small common section. This
1321 approach is copied from elf32-mips.c. */
1322 static asection m32r_elf_scom_section;
1323 static asymbol m32r_elf_scom_symbol;
1324 static asymbol *m32r_elf_scom_symbol_ptr;
1325
1326 /* Handle the special M32R section numbers that a symbol may use. */
1327
1328 static void
1329 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1330 {
1331 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1332
1333 switch (elfsym->internal_elf_sym.st_shndx)
1334 {
1335 case SHN_M32R_SCOMMON:
1336 if (m32r_elf_scom_section.name == NULL)
1337 {
1338 /* Initialize the small common section. */
1339 m32r_elf_scom_section.name = ".scommon";
1340 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1341 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1342 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1343 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1344 m32r_elf_scom_symbol.name = ".scommon";
1345 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1346 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1347 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1348 }
1349 asym->section = &m32r_elf_scom_section;
1350 asym->value = elfsym->internal_elf_sym.st_size;
1351 break;
1352 }
1353 }
1354
1355 /* Hook called by the linker routine which adds symbols from an object
1356 file. We must handle the special M32R section numbers here.
1357 We also keep watching for whether we need to create the sdata special
1358 linker sections. */
1359
1360 static bfd_boolean
1361 m32r_elf_add_symbol_hook (bfd *abfd,
1362 struct bfd_link_info *info,
1363 Elf_Internal_Sym *sym,
1364 const char **namep,
1365 flagword *flagsp ATTRIBUTE_UNUSED,
1366 asection **secp,
1367 bfd_vma *valp)
1368 {
1369 if (! info->relocatable
1370 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1371 && strcmp (*namep, "_SDA_BASE_") == 0
1372 && is_elf_hash_table (info->hash))
1373 {
1374 /* This is simpler than using _bfd_elf_create_linker_section
1375 (our needs are simpler than ppc's needs). Also
1376 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1377 section already exists a new one is created that follows it which
1378 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1379 struct elf_link_hash_entry *h;
1380 struct bfd_link_hash_entry *bh;
1381 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1382
1383 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1384 if (s == NULL)
1385 {
1386 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1387 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1388
1389 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1390 flags);
1391 if (s == NULL)
1392 return FALSE;
1393 bfd_set_section_alignment (abfd, s, 2);
1394 }
1395
1396 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1397 FALSE, FALSE, FALSE);
1398
1399 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1400 && !(_bfd_generic_link_add_one_symbol (info,
1401 abfd,
1402 "_SDA_BASE_",
1403 BSF_GLOBAL,
1404 s,
1405 (bfd_vma) 32768,
1406 NULL,
1407 FALSE,
1408 get_elf_backend_data (abfd)->collect,
1409 &bh)))
1410 return FALSE;
1411 h = (struct elf_link_hash_entry *) bh;
1412 h->type = STT_OBJECT;
1413 }
1414
1415 switch (sym->st_shndx)
1416 {
1417 case SHN_M32R_SCOMMON:
1418 *secp = bfd_make_section_old_way (abfd, ".scommon");
1419 (*secp)->flags |= SEC_IS_COMMON;
1420 *valp = sym->st_size;
1421 break;
1422 }
1423
1424 return TRUE;
1425 }
1426
1427 /* We have to figure out the SDA_BASE value, so that we can adjust the
1428 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1429 BFD. If we can't find it, we're stuck. We cache it in the ELF
1430 target data. We don't need to adjust the symbol value for an
1431 external symbol if we are producing relocatable output. */
1432
1433 static bfd_reloc_status_type
1434 m32r_elf_final_sda_base (bfd *output_bfd,
1435 struct bfd_link_info *info,
1436 const char **error_message,
1437 bfd_vma *psb)
1438 {
1439 if (elf_gp (output_bfd) == 0)
1440 {
1441 struct bfd_link_hash_entry *h;
1442
1443 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1444 if (h != NULL && h->type == bfd_link_hash_defined)
1445 elf_gp (output_bfd) = (h->u.def.value
1446 + h->u.def.section->output_section->vma
1447 + h->u.def.section->output_offset);
1448 else
1449 {
1450 /* Only get the error once. */
1451 *psb = elf_gp (output_bfd) = 4;
1452 *error_message =
1453 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1454 return bfd_reloc_dangerous;
1455 }
1456 }
1457 *psb = elf_gp (output_bfd);
1458 return bfd_reloc_ok;
1459 }
1460 \f
1461 /* Return size of a PLT entry. */
1462 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1463
1464 /* The m32r linker needs to keep track of the number of relocs that it
1465 decides to copy in check_relocs for each symbol. This is so that
1466 it can discard PC relative relocs if it doesn't need them when
1467 linking with -Bsymbolic. We store the information in a field
1468 extending the regular ELF linker hash table. */
1469
1470 /* This structure keeps track of the number of PC relative relocs we
1471 have copied for a given symbol. */
1472
1473 struct elf_m32r_pcrel_relocs_copied
1474 {
1475 /* Next section. */
1476 struct elf_m32r_pcrel_relocs_copied *next;
1477 /* A section in dynobj. */
1478 asection *section;
1479 /* Number of relocs copied in this section. */
1480 bfd_size_type count;
1481 };
1482
1483 /* The sh linker needs to keep track of the number of relocs that it
1484 decides to copy as dynamic relocs in check_relocs for each symbol.
1485 This is so that it can later discard them if they are found to be
1486 unnecessary. We store the information in a field extending the
1487 regular ELF linker hash table. */
1488
1489 struct elf_m32r_dyn_relocs
1490 {
1491 struct elf_m32r_dyn_relocs *next;
1492
1493 /* The input section of the reloc. */
1494 asection *sec;
1495
1496 /* Total number of relocs copied for the input section. */
1497 bfd_size_type count;
1498
1499 /* Number of pc-relative relocs copied for the input section. */
1500 bfd_size_type pc_count;
1501 };
1502
1503
1504 /* m32r ELF linker hash entry. */
1505
1506 struct elf_m32r_link_hash_entry
1507 {
1508 struct elf_link_hash_entry root;
1509
1510 /* Track dynamic relocs copied for this symbol. */
1511 struct elf_m32r_dyn_relocs *dyn_relocs;
1512 };
1513
1514 /* m32r ELF linker hash table. */
1515
1516 struct elf_m32r_link_hash_table
1517 {
1518 struct elf_link_hash_table root;
1519
1520 /* Short-cuts to get to dynamic linker sections. */
1521 asection *sgot;
1522 asection *sgotplt;
1523 asection *srelgot;
1524 asection *splt;
1525 asection *srelplt;
1526 asection *sdynbss;
1527 asection *srelbss;
1528
1529 /* Small local sym to section mapping cache. */
1530 struct sym_sec_cache sym_sec;
1531 };
1532
1533 /* Traverse an m32r ELF linker hash table. */
1534
1535 #define m32r_elf_link_hash_traverse(table, func, info) \
1536 (elf_link_hash_traverse \
1537 (&(table)->root, \
1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1539 (info)))
1540
1541 /* Get the m32r ELF linker hash table from a link_info structure. */
1542
1543
1544 #define m32r_elf_hash_table(p) \
1545 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1546
1547 /* Create an entry in an m32r ELF linker hash table. */
1548
1549 static struct bfd_hash_entry *
1550 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1551 struct bfd_hash_table *table,
1552 const char *string)
1553 {
1554 struct elf_m32r_link_hash_entry *ret =
1555 (struct elf_m32r_link_hash_entry *) entry;
1556
1557 /* Allocate the structure if it has not already been allocated by a
1558 subclass. */
1559 if (ret == NULL)
1560 ret = bfd_hash_allocate (table,
1561 sizeof (struct elf_m32r_link_hash_entry));
1562 if (ret == NULL)
1563 return NULL;
1564
1565 /* Call the allocation method of the superclass. */
1566 ret = ((struct elf_m32r_link_hash_entry *)
1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1568 table, string));
1569 if (ret != NULL)
1570 {
1571 struct elf_m32r_link_hash_entry *eh;
1572
1573 eh = (struct elf_m32r_link_hash_entry *) ret;
1574 eh->dyn_relocs = NULL;
1575 }
1576
1577 return (struct bfd_hash_entry *) ret;
1578 }
1579
1580 /* Create an m32r ELF linker hash table. */
1581
1582 static struct bfd_link_hash_table *
1583 m32r_elf_link_hash_table_create (bfd *abfd)
1584 {
1585 struct elf_m32r_link_hash_table *ret;
1586 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1587
1588 ret = bfd_malloc (amt);
1589 if (ret == NULL)
1590 return NULL;
1591
1592 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1593 m32r_elf_link_hash_newfunc,
1594 sizeof (struct elf_m32r_link_hash_entry)))
1595 {
1596 free (ret);
1597 return NULL;
1598 }
1599
1600 ret->sgot = NULL;
1601 ret->sgotplt = NULL;
1602 ret->srelgot = NULL;
1603 ret->splt = NULL;
1604 ret->srelplt = NULL;
1605 ret->sdynbss = NULL;
1606 ret->srelbss = NULL;
1607 ret->sym_sec.abfd = NULL;
1608
1609 return &ret->root.root;
1610 }
1611
1612 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1613 shortcuts to them in our hash table. */
1614
1615 static bfd_boolean
1616 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1617 {
1618 struct elf_m32r_link_hash_table *htab;
1619
1620 if (! _bfd_elf_create_got_section (dynobj, info))
1621 return FALSE;
1622
1623 htab = m32r_elf_hash_table (info);
1624 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1625 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1626 if (! htab->sgot || ! htab->sgotplt)
1627 abort ();
1628
1629 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1630 (SEC_ALLOC
1631 | SEC_LOAD
1632 | SEC_HAS_CONTENTS
1633 | SEC_IN_MEMORY
1634 | SEC_LINKER_CREATED
1635 | SEC_READONLY));
1636 if (htab->srelgot == NULL
1637 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1638 return FALSE;
1639
1640 return TRUE;
1641 }
1642
1643 /* Create dynamic sections when linking against a dynamic object. */
1644
1645 static bfd_boolean
1646 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1647 {
1648 struct elf_m32r_link_hash_table *htab;
1649 flagword flags, pltflags;
1650 asection *s;
1651 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1652 int ptralign = 2; /* 32bit */
1653
1654 htab = m32r_elf_hash_table (info);
1655
1656 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1657 .rel[a].bss sections. */
1658 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1659 | SEC_LINKER_CREATED);
1660
1661 pltflags = flags;
1662 pltflags |= SEC_CODE;
1663 if (bed->plt_not_loaded)
1664 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1665 if (bed->plt_readonly)
1666 pltflags |= SEC_READONLY;
1667
1668 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1669 htab->splt = s;
1670 if (s == NULL
1671 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1672 return FALSE;
1673
1674 if (bed->want_plt_sym)
1675 {
1676 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1677 .plt section. */
1678 struct bfd_link_hash_entry *bh = NULL;
1679 struct elf_link_hash_entry *h;
1680
1681 if (! (_bfd_generic_link_add_one_symbol
1682 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1683 (bfd_vma) 0, NULL, FALSE,
1684 get_elf_backend_data (abfd)->collect, &bh)))
1685 return FALSE;
1686 h = (struct elf_link_hash_entry *) bh;
1687 h->def_regular = 1;
1688 h->type = STT_OBJECT;
1689 htab->root.hplt = h;
1690
1691 if (info->shared
1692 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1693 return FALSE;
1694 }
1695
1696 s = bfd_make_section_with_flags (abfd,
1697 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1698 flags | SEC_READONLY);
1699 htab->srelplt = s;
1700 if (s == NULL
1701 || ! bfd_set_section_alignment (abfd, s, ptralign))
1702 return FALSE;
1703
1704 if (htab->sgot == NULL
1705 && ! create_got_section (abfd, info))
1706 return FALSE;
1707
1708 {
1709 const char *secname;
1710 char *relname;
1711 flagword secflags;
1712 asection *sec;
1713
1714 for (sec = abfd->sections; sec; sec = sec->next)
1715 {
1716 secflags = bfd_get_section_flags (abfd, sec);
1717 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1718 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1719 continue;
1720 secname = bfd_get_section_name (abfd, sec);
1721 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1722 strcpy (relname, ".rela");
1723 strcat (relname, secname);
1724 if (bfd_get_section_by_name (abfd, secname))
1725 continue;
1726 s = bfd_make_section_with_flags (abfd, relname,
1727 flags | SEC_READONLY);
1728 if (s == NULL
1729 || ! bfd_set_section_alignment (abfd, s, ptralign))
1730 return FALSE;
1731 }
1732 }
1733
1734 if (bed->want_dynbss)
1735 {
1736 /* The .dynbss section is a place to put symbols which are defined
1737 by dynamic objects, are referenced by regular objects, and are
1738 not functions. We must allocate space for them in the process
1739 image and use a R_*_COPY reloc to tell the dynamic linker to
1740 initialize them at run time. The linker script puts the .dynbss
1741 section into the .bss section of the final image. */
1742 s = bfd_make_section_with_flags (abfd, ".dynbss",
1743 SEC_ALLOC | SEC_LINKER_CREATED);
1744 htab->sdynbss = s;
1745 if (s == NULL)
1746 return FALSE;
1747 /* The .rel[a].bss section holds copy relocs. This section is not
1748 normally needed. We need to create it here, though, so that the
1749 linker will map it to an output section. We can't just create it
1750 only if we need it, because we will not know whether we need it
1751 until we have seen all the input files, and the first time the
1752 main linker code calls BFD after examining all the input files
1753 (size_dynamic_sections) the input sections have already been
1754 mapped to the output sections. If the section turns out not to
1755 be needed, we can discard it later. We will never need this
1756 section when generating a shared object, since they do not use
1757 copy relocs. */
1758 if (! info->shared)
1759 {
1760 s = bfd_make_section_with_flags (abfd,
1761 (bed->default_use_rela_p
1762 ? ".rela.bss" : ".rel.bss"),
1763 flags | SEC_READONLY);
1764 htab->srelbss = s;
1765 if (s == NULL
1766 || ! bfd_set_section_alignment (abfd, s, ptralign))
1767 return FALSE;
1768 }
1769 }
1770
1771 return TRUE;
1772 }
1773
1774 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1775
1776 static void
1777 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1778 struct elf_link_hash_entry *dir,
1779 struct elf_link_hash_entry *ind)
1780 {
1781 struct elf_m32r_link_hash_entry * edir;
1782 struct elf_m32r_link_hash_entry * eind;
1783
1784 edir = (struct elf_m32r_link_hash_entry *) dir;
1785 eind = (struct elf_m32r_link_hash_entry *) ind;
1786
1787 if (eind->dyn_relocs != NULL)
1788 {
1789 if (edir->dyn_relocs != NULL)
1790 {
1791 struct elf_m32r_dyn_relocs **pp;
1792 struct elf_m32r_dyn_relocs *p;
1793
1794 /* Add reloc counts against the indirect sym to the direct sym
1795 list. Merge any entries against the same section. */
1796 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1797 {
1798 struct elf_m32r_dyn_relocs *q;
1799
1800 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1801 if (q->sec == p->sec)
1802 {
1803 q->pc_count += p->pc_count;
1804 q->count += p->count;
1805 *pp = p->next;
1806 break;
1807 }
1808 if (q == NULL)
1809 pp = &p->next;
1810 }
1811 *pp = edir->dyn_relocs;
1812 }
1813
1814 edir->dyn_relocs = eind->dyn_relocs;
1815 eind->dyn_relocs = NULL;
1816 }
1817
1818 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1819 }
1820
1821 \f
1822 /* Adjust a symbol defined by a dynamic object and referenced by a
1823 regular object. The current definition is in some section of the
1824 dynamic object, but we're not including those sections. We have to
1825 change the definition to something the rest of the link can
1826 understand. */
1827
1828 static bfd_boolean
1829 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1830 struct elf_link_hash_entry *h)
1831 {
1832 struct elf_m32r_link_hash_table *htab;
1833 struct elf_m32r_link_hash_entry *eh;
1834 struct elf_m32r_dyn_relocs *p;
1835 bfd *dynobj;
1836 asection *s;
1837
1838 #ifdef DEBUG_PIC
1839 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1840 #endif
1841
1842 dynobj = elf_hash_table (info)->dynobj;
1843
1844 /* Make sure we know what is going on here. */
1845 BFD_ASSERT (dynobj != NULL
1846 && (h->needs_plt
1847 || h->u.weakdef != NULL
1848 || (h->def_dynamic
1849 && h->ref_regular
1850 && !h->def_regular)));
1851
1852 /* If this is a function, put it in the procedure linkage table. We
1853 will fill in the contents of the procedure linkage table later,
1854 when we know the address of the .got section. */
1855 if (h->type == STT_FUNC
1856 || h->needs_plt)
1857 {
1858 if (! info->shared
1859 && !h->def_dynamic
1860 && !h->ref_dynamic
1861 && h->root.type != bfd_link_hash_undefweak
1862 && h->root.type != bfd_link_hash_undefined)
1863 {
1864 /* This case can occur if we saw a PLT reloc in an input
1865 file, but the symbol was never referred to by a dynamic
1866 object. In such a case, we don't actually need to build
1867 a procedure linkage table, and we can just do a PCREL
1868 reloc instead. */
1869 h->plt.offset = (bfd_vma) -1;
1870 h->needs_plt = 0;
1871 }
1872
1873 return TRUE;
1874 }
1875 else
1876 h->plt.offset = (bfd_vma) -1;
1877
1878 /* If this is a weak symbol, and there is a real definition, the
1879 processor independent code will have arranged for us to see the
1880 real definition first, and we can just use the same value. */
1881 if (h->u.weakdef != NULL)
1882 {
1883 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1884 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1885 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1886 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1887 return TRUE;
1888 }
1889
1890 /* This is a reference to a symbol defined by a dynamic object which
1891 is not a function. */
1892
1893 /* If we are creating a shared library, we must presume that the
1894 only references to the symbol are via the global offset table.
1895 For such cases we need not do anything here; the relocations will
1896 be handled correctly by relocate_section. */
1897 if (info->shared)
1898 return TRUE;
1899
1900 /* If there are no references to this symbol that do not use the
1901 GOT, we don't need to generate a copy reloc. */
1902 if (!h->non_got_ref)
1903 return TRUE;
1904
1905 /* If -z nocopyreloc was given, we won't generate them either. */
1906 if (info->nocopyreloc)
1907 {
1908 h->non_got_ref = 0;
1909 return TRUE;
1910 }
1911
1912 eh = (struct elf_m32r_link_hash_entry *) h;
1913 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1914 {
1915 s = p->sec->output_section;
1916 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1917 break;
1918 }
1919
1920 /* If we didn't find any dynamic relocs in sections which needs the
1921 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1922 the copy reloc. */
1923 if (p == NULL)
1924 {
1925 h->non_got_ref = 0;
1926 return TRUE;
1927 }
1928
1929 if (h->size == 0)
1930 {
1931 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1932 h->root.root.string);
1933 return TRUE;
1934 }
1935
1936 /* We must allocate the symbol in our .dynbss section, which will
1937 become part of the .bss section of the executable. There will be
1938 an entry for this symbol in the .dynsym section. The dynamic
1939 object will contain position independent code, so all references
1940 from the dynamic object to this symbol will go through the global
1941 offset table. The dynamic linker will use the .dynsym entry to
1942 determine the address it must put in the global offset table, so
1943 both the dynamic object and the regular object will refer to the
1944 same memory location for the variable. */
1945
1946 htab = m32r_elf_hash_table (info);
1947 s = htab->sdynbss;
1948 BFD_ASSERT (s != NULL);
1949
1950 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1951 to copy the initial value out of the dynamic object and into the
1952 runtime process image. We need to remember the offset into the
1953 .rela.bss section we are going to use. */
1954 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1955 {
1956 asection *srel;
1957
1958 srel = htab->srelbss;
1959 BFD_ASSERT (srel != NULL);
1960 srel->size += sizeof (Elf32_External_Rela);
1961 h->needs_copy = 1;
1962 }
1963
1964 return _bfd_elf_adjust_dynamic_copy (h, s);
1965 }
1966
1967 /* Allocate space in .plt, .got and associated reloc sections for
1968 dynamic relocs. */
1969
1970 static bfd_boolean
1971 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1972 {
1973 struct bfd_link_info *info;
1974 struct elf_m32r_link_hash_table *htab;
1975 struct elf_m32r_link_hash_entry *eh;
1976 struct elf_m32r_dyn_relocs *p;
1977
1978 if (h->root.type == bfd_link_hash_indirect)
1979 return TRUE;
1980
1981 if (h->root.type == bfd_link_hash_warning)
1982 /* When warning symbols are created, they **replace** the "real"
1983 entry in the hash table, thus we never get to see the real
1984 symbol in a hash traversal. So look at it now. */
1985 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1986
1987 info = (struct bfd_link_info *) inf;
1988 htab = m32r_elf_hash_table (info);
1989
1990 eh = (struct elf_m32r_link_hash_entry *) h;
1991
1992 if (htab->root.dynamic_sections_created
1993 && h->plt.refcount > 0)
1994 {
1995 /* Make sure this symbol is output as a dynamic symbol.
1996 Undefined weak syms won't yet be marked as dynamic. */
1997 if (h->dynindx == -1
1998 && !h->forced_local)
1999 {
2000 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2001 return FALSE;
2002 }
2003
2004 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2005 {
2006 asection *s = htab->splt;
2007
2008 /* If this is the first .plt entry, make room for the special
2009 first entry. */
2010 if (s->size == 0)
2011 s->size += PLT_ENTRY_SIZE;
2012
2013 h->plt.offset = s->size;
2014
2015 /* If this symbol is not defined in a regular file, and we are
2016 not generating a shared library, then set the symbol to this
2017 location in the .plt. This is required to make function
2018 pointers compare as equal between the normal executable and
2019 the shared library. */
2020 if (! info->shared
2021 && !h->def_regular)
2022 {
2023 h->root.u.def.section = s;
2024 h->root.u.def.value = h->plt.offset;
2025 }
2026
2027 /* Make room for this entry. */
2028 s->size += PLT_ENTRY_SIZE;
2029
2030 /* We also need to make an entry in the .got.plt section, which
2031 will be placed in the .got section by the linker script. */
2032 htab->sgotplt->size += 4;
2033
2034 /* We also need to make an entry in the .rel.plt section. */
2035 htab->srelplt->size += sizeof (Elf32_External_Rela);
2036 }
2037 else
2038 {
2039 h->plt.offset = (bfd_vma) -1;
2040 h->needs_plt = 0;
2041 }
2042 }
2043 else
2044 {
2045 h->plt.offset = (bfd_vma) -1;
2046 h->needs_plt = 0;
2047 }
2048
2049 if (h->got.refcount > 0)
2050 {
2051 asection *s;
2052 bfd_boolean dyn;
2053
2054 /* Make sure this symbol is output as a dynamic symbol.
2055 Undefined weak syms won't yet be marked as dynamic. */
2056 if (h->dynindx == -1
2057 && !h->forced_local)
2058 {
2059 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2060 return FALSE;
2061 }
2062
2063 s = htab->sgot;
2064
2065 h->got.offset = s->size;
2066 s->size += 4;
2067 dyn = htab->root.dynamic_sections_created;
2068 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2069 htab->srelgot->size += sizeof (Elf32_External_Rela);
2070 }
2071 else
2072 h->got.offset = (bfd_vma) -1;
2073
2074 if (eh->dyn_relocs == NULL)
2075 return TRUE;
2076
2077 /* In the shared -Bsymbolic case, discard space allocated for
2078 dynamic pc-relative relocs against symbols which turn out to be
2079 defined in regular objects. For the normal shared case, discard
2080 space for pc-relative relocs that have become local due to symbol
2081 visibility changes. */
2082
2083 if (info->shared)
2084 {
2085 if (h->def_regular
2086 && (h->forced_local
2087 || info->symbolic))
2088 {
2089 struct elf_m32r_dyn_relocs **pp;
2090
2091 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2092 {
2093 p->count -= p->pc_count;
2094 p->pc_count = 0;
2095 if (p->count == 0)
2096 *pp = p->next;
2097 else
2098 pp = &p->next;
2099 }
2100 }
2101
2102 /* Also discard relocs on undefined weak syms with non-default
2103 visibility. */
2104 if (eh->dyn_relocs != NULL
2105 && h->root.type == bfd_link_hash_undefweak)
2106 {
2107 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2108 eh->dyn_relocs = NULL;
2109
2110 /* Make sure undefined weak symbols are output as a dynamic
2111 symbol in PIEs. */
2112 else if (h->dynindx == -1
2113 && !h->forced_local)
2114 {
2115 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2116 return FALSE;
2117 }
2118 }
2119 }
2120 else
2121 {
2122 /* For the non-shared case, discard space for relocs against
2123 symbols which turn out to need copy relocs or are not
2124 dynamic. */
2125
2126 if (!h->non_got_ref
2127 && ((h->def_dynamic
2128 && !h->def_regular)
2129 || (htab->root.dynamic_sections_created
2130 && (h->root.type == bfd_link_hash_undefweak
2131 || h->root.type == bfd_link_hash_undefined))))
2132 {
2133 /* Make sure this symbol is output as a dynamic symbol.
2134 Undefined weak syms won't yet be marked as dynamic. */
2135 if (h->dynindx == -1
2136 && !h->forced_local)
2137 {
2138 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2139 return FALSE;
2140 }
2141
2142 /* If that succeeded, we know we'll be keeping all the
2143 relocs. */
2144 if (h->dynindx != -1)
2145 goto keep;
2146 }
2147
2148 eh->dyn_relocs = NULL;
2149
2150 keep: ;
2151 }
2152
2153 /* Finally, allocate space. */
2154 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2155 {
2156 asection *sreloc = elf_section_data (p->sec)->sreloc;
2157 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2158 }
2159
2160 return TRUE;
2161 }
2162
2163 /* Find any dynamic relocs that apply to read-only sections. */
2164
2165 static bfd_boolean
2166 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2167 {
2168 struct elf_m32r_link_hash_entry *eh;
2169 struct elf_m32r_dyn_relocs *p;
2170
2171 if (h->root.type == bfd_link_hash_warning)
2172 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2173
2174 eh = (struct elf_m32r_link_hash_entry *) h;
2175 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2176 {
2177 asection *s = p->sec->output_section;
2178
2179 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2180 {
2181 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2182
2183 info->flags |= DF_TEXTREL;
2184
2185 /* Not an error, just cut short the traversal. */
2186 return FALSE;
2187 }
2188 }
2189 return TRUE;
2190 }
2191
2192 /* Set the sizes of the dynamic sections. */
2193
2194 static bfd_boolean
2195 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2196 struct bfd_link_info *info)
2197 {
2198 struct elf_m32r_link_hash_table *htab;
2199 bfd *dynobj;
2200 asection *s;
2201 bfd_boolean relocs;
2202 bfd *ibfd;
2203
2204 #ifdef DEBUG_PIC
2205 printf ("m32r_elf_size_dynamic_sections()\n");
2206 #endif
2207
2208 htab = m32r_elf_hash_table (info);
2209 dynobj = htab->root.dynobj;
2210 BFD_ASSERT (dynobj != NULL);
2211
2212 if (htab->root.dynamic_sections_created)
2213 {
2214 /* Set the contents of the .interp section to the interpreter. */
2215 if (info->executable)
2216 {
2217 s = bfd_get_section_by_name (dynobj, ".interp");
2218 BFD_ASSERT (s != NULL);
2219 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2220 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2221 }
2222 }
2223
2224 /* Set up .got offsets for local syms, and space for local dynamic
2225 relocs. */
2226 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2227 {
2228 bfd_signed_vma *local_got;
2229 bfd_signed_vma *end_local_got;
2230 bfd_size_type locsymcount;
2231 Elf_Internal_Shdr *symtab_hdr;
2232 asection *srel;
2233
2234 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2235 continue;
2236
2237 for (s = ibfd->sections; s != NULL; s = s->next)
2238 {
2239 struct elf_m32r_dyn_relocs *p;
2240
2241 for (p = ((struct elf_m32r_dyn_relocs *)
2242 elf_section_data (s)->local_dynrel);
2243 p != NULL;
2244 p = p->next)
2245 {
2246 if (! bfd_is_abs_section (p->sec)
2247 && bfd_is_abs_section (p->sec->output_section))
2248 {
2249 /* Input section has been discarded, either because
2250 it is a copy of a linkonce section or due to
2251 linker script /DISCARD/, so we'll be discarding
2252 the relocs too. */
2253 }
2254 else if (p->count != 0)
2255 {
2256 srel = elf_section_data (p->sec)->sreloc;
2257 srel->size += p->count * sizeof (Elf32_External_Rela);
2258 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2259 info->flags |= DF_TEXTREL;
2260 }
2261 }
2262 }
2263
2264 local_got = elf_local_got_refcounts (ibfd);
2265 if (!local_got)
2266 continue;
2267
2268 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2269 locsymcount = symtab_hdr->sh_info;
2270 end_local_got = local_got + locsymcount;
2271 s = htab->sgot;
2272 srel = htab->srelgot;
2273 for (; local_got < end_local_got; ++local_got)
2274 {
2275 if (*local_got > 0)
2276 {
2277 *local_got = s->size;
2278 s->size += 4;
2279 if (info->shared)
2280 srel->size += sizeof (Elf32_External_Rela);
2281 }
2282 else
2283 *local_got = (bfd_vma) -1;
2284 }
2285 }
2286
2287 /* Allocate global sym .plt and .got entries, and space for global
2288 sym dynamic relocs. */
2289 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2290
2291 /* We now have determined the sizes of the various dynamic sections.
2292 Allocate memory for them. */
2293 relocs = FALSE;
2294 for (s = dynobj->sections; s != NULL; s = s->next)
2295 {
2296 if ((s->flags & SEC_LINKER_CREATED) == 0)
2297 continue;
2298
2299 if (s == htab->splt
2300 || s == htab->sgot
2301 || s == htab->sgotplt
2302 || s == htab->sdynbss)
2303 {
2304 /* Strip this section if we don't need it; see the
2305 comment below. */
2306 }
2307 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2308 {
2309 if (s->size != 0 && s != htab->srelplt)
2310 relocs = TRUE;
2311
2312 /* We use the reloc_count field as a counter if we need
2313 to copy relocs into the output file. */
2314 s->reloc_count = 0;
2315 }
2316 else
2317 /* It's not one of our sections, so don't allocate space. */
2318 continue;
2319
2320 if (s->size == 0)
2321 {
2322 /* If we don't need this section, strip it from the
2323 output file. This is mostly to handle .rela.bss and
2324 .rela.plt. We must create both sections in
2325 create_dynamic_sections, because they must be created
2326 before the linker maps input sections to output
2327 sections. The linker does that before
2328 adjust_dynamic_symbol is called, and it is that
2329 function which decides whether anything needs to go
2330 into these sections. */
2331 s->flags |= SEC_EXCLUDE;
2332 continue;
2333 }
2334
2335 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2336 continue;
2337
2338 /* Allocate memory for the section contents. We use bfd_zalloc
2339 here in case unused entries are not reclaimed before the
2340 section's contents are written out. This should not happen,
2341 but this way if it does, we get a R_M32R_NONE reloc instead
2342 of garbage. */
2343 s->contents = bfd_zalloc (dynobj, s->size);
2344 if (s->contents == NULL)
2345 return FALSE;
2346 }
2347
2348 if (htab->root.dynamic_sections_created)
2349 {
2350 /* Add some entries to the .dynamic section. We fill in the
2351 values later, in m32r_elf_finish_dynamic_sections, but we
2352 must add the entries now so that we get the correct size for
2353 the .dynamic section. The DT_DEBUG entry is filled in by the
2354 dynamic linker and used by the debugger. */
2355 #define add_dynamic_entry(TAG, VAL) \
2356 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2357
2358 if (info->executable)
2359 {
2360 if (! add_dynamic_entry (DT_DEBUG, 0))
2361 return FALSE;
2362 }
2363
2364 if (htab->splt->size != 0)
2365 {
2366 if (! add_dynamic_entry (DT_PLTGOT, 0)
2367 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2368 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2369 || ! add_dynamic_entry (DT_JMPREL, 0))
2370 return FALSE;
2371 }
2372
2373 if (relocs)
2374 {
2375 if (! add_dynamic_entry (DT_RELA, 0)
2376 || ! add_dynamic_entry (DT_RELASZ, 0)
2377 || ! add_dynamic_entry (DT_RELAENT,
2378 sizeof (Elf32_External_Rela)))
2379 return FALSE;
2380
2381 /* If any dynamic relocs apply to a read-only section,
2382 then we need a DT_TEXTREL entry. */
2383 if ((info->flags & DF_TEXTREL) == 0)
2384 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2385 info);
2386
2387 if ((info->flags & DF_TEXTREL) != 0)
2388 {
2389 if (! add_dynamic_entry (DT_TEXTREL, 0))
2390 return FALSE;
2391 }
2392 }
2393 }
2394 #undef add_dynamic_entry
2395
2396 return TRUE;
2397 }
2398
2399 /* Relocate an M32R/D ELF section.
2400 There is some attempt to make this function usable for many architectures,
2401 both for RELA and REL type relocs, if only to serve as a learning tool.
2402
2403 The RELOCATE_SECTION function is called by the new ELF backend linker
2404 to handle the relocations for a section.
2405
2406 The relocs are always passed as Rela structures; if the section
2407 actually uses Rel structures, the r_addend field will always be
2408 zero.
2409
2410 This function is responsible for adjust the section contents as
2411 necessary, and (if using Rela relocs and generating a
2412 relocatable output file) adjusting the reloc addend as
2413 necessary.
2414
2415 This function does not have to worry about setting the reloc
2416 address or the reloc symbol index.
2417
2418 LOCAL_SYMS is a pointer to the swapped in local symbols.
2419
2420 LOCAL_SECTIONS is an array giving the section in the input file
2421 corresponding to the st_shndx field of each local symbol.
2422
2423 The global hash table entry for the global symbols can be found
2424 via elf_sym_hashes (input_bfd).
2425
2426 When generating relocatable output, this function must handle
2427 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2428 going to be the section symbol corresponding to the output
2429 section, which means that the addend must be adjusted
2430 accordingly. */
2431
2432 static bfd_boolean
2433 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2434 struct bfd_link_info *info,
2435 bfd *input_bfd,
2436 asection *input_section,
2437 bfd_byte *contents,
2438 Elf_Internal_Rela *relocs,
2439 Elf_Internal_Sym *local_syms,
2440 asection **local_sections)
2441 {
2442 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2443 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2444 Elf_Internal_Rela *rel, *relend;
2445 /* Assume success. */
2446 bfd_boolean ret = TRUE;
2447
2448 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2449 bfd *dynobj;
2450 bfd_vma *local_got_offsets;
2451 asection *sgot, *splt, *sreloc;
2452 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2453
2454 dynobj = htab->root.dynobj;
2455 local_got_offsets = elf_local_got_offsets (input_bfd);
2456
2457 sgot = htab->sgot;
2458 splt = htab->splt;
2459 sreloc = NULL;
2460
2461 rel = relocs;
2462 relend = relocs + input_section->reloc_count;
2463 for (; rel < relend; rel++)
2464 {
2465 int r_type;
2466 reloc_howto_type *howto;
2467 unsigned long r_symndx;
2468 struct elf_link_hash_entry *h;
2469 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2470 ensure it's zero (we use REL relocs, not RELA). Therefore this
2471 should be assigning zero to `addend', but for clarity we use
2472 `r_addend'. */
2473 bfd_vma addend = rel->r_addend;
2474 bfd_vma offset = rel->r_offset;
2475 bfd_vma relocation;
2476 Elf_Internal_Sym *sym;
2477 asection *sec;
2478 const char *sym_name;
2479 bfd_reloc_status_type r;
2480 const char *errmsg = NULL;
2481 bfd_boolean use_rel = FALSE;
2482
2483 h = NULL;
2484 r_type = ELF32_R_TYPE (rel->r_info);
2485 if (r_type < 0 || r_type >= (int) R_M32R_max)
2486 {
2487 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2488 input_bfd,
2489 (int) r_type);
2490 bfd_set_error (bfd_error_bad_value);
2491 ret = FALSE;
2492 continue;
2493 }
2494
2495 if ( r_type == R_M32R_GNU_VTENTRY
2496 || r_type == R_M32R_GNU_VTINHERIT
2497 || r_type == R_M32R_NONE
2498 || r_type == R_M32R_RELA_GNU_VTENTRY
2499 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2500 continue;
2501
2502 if (r_type <= R_M32R_GNU_VTENTRY)
2503 use_rel = TRUE;
2504
2505 howto = m32r_elf_howto_table + r_type;
2506 r_symndx = ELF32_R_SYM (rel->r_info);
2507
2508 sym = NULL;
2509 sec = NULL;
2510 h = NULL;
2511
2512 if (r_symndx < symtab_hdr->sh_info)
2513 {
2514 /* Local symbol. */
2515 sym = local_syms + r_symndx;
2516 sec = local_sections[r_symndx];
2517 sym_name = "<local symbol>";
2518
2519 if (!use_rel)
2520 {
2521 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2522 addend = rel->r_addend;
2523 }
2524 else
2525 {
2526 relocation = (sec->output_section->vma
2527 + sec->output_offset
2528 + sym->st_value);
2529 }
2530 }
2531 else
2532 {
2533 /* External symbol. */
2534 relocation = 0;
2535
2536 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2537 while (h->root.type == bfd_link_hash_indirect
2538 || h->root.type == bfd_link_hash_warning)
2539 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2540 sym_name = h->root.root.string;
2541
2542 if (h->root.type == bfd_link_hash_defined
2543 || h->root.type == bfd_link_hash_defweak)
2544 {
2545 bfd_boolean dyn;
2546 sec = h->root.u.def.section;
2547
2548 dyn = htab->root.dynamic_sections_created;
2549 sec = h->root.u.def.section;
2550 if (r_type == R_M32R_GOTPC24
2551 || (r_type == R_M32R_GOTPC_HI_ULO
2552 || r_type == R_M32R_GOTPC_HI_SLO
2553 || r_type == R_M32R_GOTPC_LO)
2554 || (r_type == R_M32R_26_PLTREL
2555 && h->plt.offset != (bfd_vma) -1)
2556 || ((r_type == R_M32R_GOT24
2557 || r_type == R_M32R_GOT16_HI_ULO
2558 || r_type == R_M32R_GOT16_HI_SLO
2559 || r_type == R_M32R_GOT16_LO)
2560 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2561 info->shared, h)
2562 && (! info->shared
2563 || (! info->symbolic && h->dynindx != -1)
2564 || !h->def_regular))
2565 || (info->shared
2566 && ((! info->symbolic && h->dynindx != -1)
2567 || !h->def_regular)
2568 && (((r_type == R_M32R_16_RELA
2569 || r_type == R_M32R_32_RELA
2570 || r_type == R_M32R_24_RELA
2571 || r_type == R_M32R_HI16_ULO_RELA
2572 || r_type == R_M32R_HI16_SLO_RELA
2573 || r_type == R_M32R_LO16_RELA)
2574 && !h->forced_local)
2575 || r_type == R_M32R_REL32
2576 || r_type == R_M32R_10_PCREL_RELA
2577 || r_type == R_M32R_18_PCREL_RELA
2578 || r_type == R_M32R_26_PCREL_RELA)
2579 && ((input_section->flags & SEC_ALLOC) != 0
2580 /* DWARF will emit R_M32R_16(24,32) relocations
2581 in its sections against symbols defined
2582 externally in shared libraries. We can't do
2583 anything with them here. */
2584 || ((input_section->flags & SEC_DEBUGGING) != 0
2585 && h->def_dynamic))))
2586 {
2587 /* In these cases, we don't need the relocation
2588 value. We check specially because in some
2589 obscure cases sec->output_section will be NULL. */
2590 }
2591 else if (sec->output_section != NULL)
2592 relocation = (h->root.u.def.value
2593 + sec->output_section->vma
2594 + sec->output_offset);
2595 else if (!info->relocatable)
2596 {
2597 (*_bfd_error_handler)
2598 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2599 input_bfd,
2600 input_section,
2601 (long) rel->r_offset,
2602 howto->name,
2603 h->root.root.string);
2604 }
2605 }
2606 else if (h->root.type == bfd_link_hash_undefweak)
2607 ;
2608 else if (info->unresolved_syms_in_objects == RM_IGNORE
2609 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2610 ;
2611 else if (!info->relocatable)
2612 {
2613 if (! ((*info->callbacks->undefined_symbol)
2614 (info, h->root.root.string, input_bfd,
2615 input_section, offset,
2616 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2617 || ELF_ST_VISIBILITY (h->other)))))
2618 return FALSE;
2619 }
2620 }
2621
2622 if (sec != NULL && elf_discarded_section (sec))
2623 {
2624 /* For relocs against symbols from removed linkonce sections,
2625 or sections discarded by a linker script, we just want the
2626 section contents zeroed. Avoid any special processing. */
2627 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2628 rel->r_info = 0;
2629 rel->r_addend = 0;
2630 continue;
2631 }
2632
2633 if (info->relocatable && !use_rel)
2634 {
2635 /* This is a relocatable link. We don't have to change
2636 anything, unless the reloc is against a section symbol,
2637 in which case we have to adjust according to where the
2638 section symbol winds up in the output section. */
2639 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2640 rel->r_addend += sec->output_offset;
2641 continue;
2642 }
2643
2644 if (info->relocatable && use_rel)
2645 {
2646 /* This is a relocatable link. We don't have to change
2647 anything, unless the reloc is against a section symbol,
2648 in which case we have to adjust according to where the
2649 section symbol winds up in the output section. */
2650 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2651 continue;
2652
2653 addend += sec->output_offset;
2654
2655 /* If partial_inplace, we need to store any additional addend
2656 back in the section. */
2657 if (! howto->partial_inplace)
2658 continue;
2659 /* ??? Here is a nice place to call a special_function
2660 like handler. */
2661 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2662 r = _bfd_relocate_contents (howto, input_bfd,
2663 addend, contents + offset);
2664 else
2665 {
2666 Elf_Internal_Rela *lorel;
2667
2668 /* We allow an arbitrary number of HI16 relocs before the
2669 LO16 reloc. This permits gcc to emit the HI and LO relocs
2670 itself. */
2671 for (lorel = rel + 1;
2672 (lorel < relend
2673 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2674 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2675 lorel++)
2676 continue;
2677 if (lorel < relend
2678 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2679 {
2680 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2681 contents, addend);
2682 r = bfd_reloc_ok;
2683 }
2684 else
2685 r = _bfd_relocate_contents (howto, input_bfd,
2686 addend, contents + offset);
2687 }
2688 }
2689 else
2690 {
2691 /* Sanity check the address. */
2692 if (offset > high_address)
2693 {
2694 r = bfd_reloc_outofrange;
2695 goto check_reloc;
2696 }
2697
2698 switch ((int) r_type)
2699 {
2700 case R_M32R_GOTOFF:
2701 /* Relocation is relative to the start of the global offset
2702 table (for ld24 rx, #uimm24). eg access at label+addend
2703
2704 ld24 rx. #label@GOTOFF + addend
2705 sub rx, r12. */
2706
2707 BFD_ASSERT (sgot != NULL);
2708
2709 relocation = -(relocation - sgot->output_section->vma);
2710 rel->r_addend = -rel->r_addend;
2711 break;
2712
2713 case R_M32R_GOTOFF_HI_ULO:
2714 case R_M32R_GOTOFF_HI_SLO:
2715 case R_M32R_GOTOFF_LO:
2716 BFD_ASSERT (sgot != NULL);
2717
2718 relocation -= sgot->output_section->vma;
2719
2720 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2721 && ((relocation + rel->r_addend) & 0x8000))
2722 rel->r_addend += 0x10000;
2723 break;
2724
2725 case R_M32R_GOTPC24:
2726 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2727 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2728 */
2729 relocation = sgot->output_section->vma;
2730 break;
2731
2732 case R_M32R_GOTPC_HI_ULO:
2733 case R_M32R_GOTPC_HI_SLO:
2734 case R_M32R_GOTPC_LO:
2735 {
2736 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2737 bl .+4
2738 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2739 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2740 or
2741 bl .+4
2742 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2743 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2744 */
2745 relocation = sgot->output_section->vma;
2746 relocation -= (input_section->output_section->vma
2747 + input_section->output_offset
2748 + rel->r_offset);
2749 if ((r_type == R_M32R_GOTPC_HI_SLO)
2750 && ((relocation + rel->r_addend) & 0x8000))
2751 rel->r_addend += 0x10000;
2752
2753 break;
2754 }
2755 case R_M32R_GOT16_HI_ULO:
2756 case R_M32R_GOT16_HI_SLO:
2757 case R_M32R_GOT16_LO:
2758 /* Fall through. */
2759 case R_M32R_GOT24:
2760 /* Relocation is to the entry for this symbol in the global
2761 offset table. */
2762 BFD_ASSERT (sgot != NULL);
2763
2764 if (h != NULL)
2765 {
2766 bfd_boolean dyn;
2767 bfd_vma off;
2768
2769 off = h->got.offset;
2770 BFD_ASSERT (off != (bfd_vma) -1);
2771
2772 dyn = htab->root.dynamic_sections_created;
2773 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2774 || (info->shared
2775 && (info->symbolic
2776 || h->dynindx == -1
2777 || h->forced_local)
2778 && h->def_regular))
2779 {
2780 /* This is actually a static link, or it is a
2781 -Bsymbolic link and the symbol is defined
2782 locally, or the symbol was forced to be local
2783 because of a version file. We must initialize
2784 this entry in the global offset table. Since the
2785 offset must always be a multiple of 4, we use the
2786 least significant bit to record whether we have
2787 initialized it already.
2788
2789 When doing a dynamic link, we create a .rela.got
2790 relocation entry to initialize the value. This
2791 is done in the finish_dynamic_symbol routine. */
2792 if ((off & 1) != 0)
2793 off &= ~1;
2794 else
2795 {
2796 bfd_put_32 (output_bfd, relocation,
2797 sgot->contents + off);
2798 h->got.offset |= 1;
2799 }
2800 }
2801
2802 relocation = sgot->output_offset + off;
2803 }
2804 else
2805 {
2806 bfd_vma off;
2807 bfd_byte *loc;
2808
2809 BFD_ASSERT (local_got_offsets != NULL
2810 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2811
2812 off = local_got_offsets[r_symndx];
2813
2814 /* The offset must always be a multiple of 4. We use
2815 the least significant bit to record whether we have
2816 already processed this entry. */
2817 if ((off & 1) != 0)
2818 off &= ~1;
2819 else
2820 {
2821 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2822
2823 if (info->shared)
2824 {
2825 asection *srelgot;
2826 Elf_Internal_Rela outrel;
2827
2828 /* We need to generate a R_M32R_RELATIVE reloc
2829 for the dynamic linker. */
2830 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2831 BFD_ASSERT (srelgot != NULL);
2832
2833 outrel.r_offset = (sgot->output_section->vma
2834 + sgot->output_offset
2835 + off);
2836 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2837 outrel.r_addend = relocation;
2838 loc = srelgot->contents;
2839 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2840 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2841 ++srelgot->reloc_count;
2842 }
2843
2844 local_got_offsets[r_symndx] |= 1;
2845 }
2846
2847 relocation = sgot->output_offset + off;
2848 }
2849 if ((r_type == R_M32R_GOT16_HI_SLO)
2850 && ((relocation + rel->r_addend) & 0x8000))
2851 rel->r_addend += 0x10000;
2852
2853 break;
2854
2855 case R_M32R_26_PLTREL:
2856 /* Relocation is to the entry for this symbol in the
2857 procedure linkage table. */
2858
2859 /* The native assembler will generate a 26_PLTREL reloc
2860 for a local symbol if you assemble a call from one
2861 section to another when using -K pic. */
2862 if (h == NULL)
2863 break;
2864
2865 if (h->forced_local)
2866 break;
2867
2868 if (h->plt.offset == (bfd_vma) -1)
2869 /* We didn't make a PLT entry for this symbol. This
2870 happens when statically linking PIC code, or when
2871 using -Bsymbolic. */
2872 break;
2873
2874 relocation = (splt->output_section->vma
2875 + splt->output_offset
2876 + h->plt.offset);
2877 break;
2878
2879 case R_M32R_HI16_SLO_RELA:
2880 if ((relocation + rel->r_addend) & 0x8000)
2881 rel->r_addend += 0x10000;
2882 /* Fall through. */
2883
2884 case R_M32R_16_RELA:
2885 case R_M32R_24_RELA:
2886 case R_M32R_32_RELA:
2887 case R_M32R_REL32:
2888 case R_M32R_10_PCREL_RELA:
2889 case R_M32R_18_PCREL_RELA:
2890 case R_M32R_26_PCREL_RELA:
2891 case R_M32R_HI16_ULO_RELA:
2892 case R_M32R_LO16_RELA:
2893 if (info->shared
2894 && r_symndx != 0
2895 && (input_section->flags & SEC_ALLOC) != 0
2896 && (( r_type != R_M32R_10_PCREL_RELA
2897 && r_type != R_M32R_18_PCREL_RELA
2898 && r_type != R_M32R_26_PCREL_RELA
2899 && r_type != R_M32R_REL32)
2900 || (h != NULL
2901 && h->dynindx != -1
2902 && (! info->symbolic
2903 || !h->def_regular))))
2904 {
2905 Elf_Internal_Rela outrel;
2906 bfd_boolean skip, relocate;
2907 bfd_byte *loc;
2908
2909 /* When generating a shared object, these relocations
2910 are copied into the output file to be resolved at run
2911 time. */
2912 if (sreloc == NULL)
2913 {
2914 sreloc = _bfd_elf_get_dynamic_reloc_section
2915 (input_bfd, input_section, /*rela?*/ TRUE);
2916 if (sreloc == NULL)
2917 return FALSE;
2918 }
2919
2920 skip = FALSE;
2921 relocate = FALSE;
2922
2923 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2924 info,
2925 input_section,
2926 rel->r_offset);
2927 if (outrel.r_offset == (bfd_vma) -1)
2928 skip = TRUE;
2929 else if (outrel.r_offset == (bfd_vma) -2)
2930 skip = relocate = TRUE;
2931 outrel.r_offset += (input_section->output_section->vma
2932 + input_section->output_offset);
2933
2934 if (skip)
2935 memset (&outrel, 0, sizeof outrel);
2936 else if ( r_type == R_M32R_10_PCREL_RELA
2937 || r_type == R_M32R_18_PCREL_RELA
2938 || r_type == R_M32R_26_PCREL_RELA
2939 || r_type == R_M32R_REL32)
2940 {
2941 BFD_ASSERT (h != NULL && h->dynindx != -1);
2942 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2943 outrel.r_addend = rel->r_addend;
2944 }
2945 else
2946 {
2947 /* h->dynindx may be -1 if this symbol was marked to
2948 become local. */
2949 if (h == NULL
2950 || ((info->symbolic || h->dynindx == -1)
2951 && h->def_regular))
2952 {
2953 relocate = TRUE;
2954 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2955 outrel.r_addend = relocation + rel->r_addend;
2956 }
2957 else
2958 {
2959 BFD_ASSERT (h->dynindx != -1);
2960 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2961 outrel.r_addend = relocation + rel->r_addend;
2962 }
2963 }
2964
2965 loc = sreloc->contents;
2966 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2967 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2968 ++sreloc->reloc_count;
2969
2970 /* If this reloc is against an external symbol, we do
2971 not want to fiddle with the addend. Otherwise, we
2972 need to include the symbol value so that it becomes
2973 an addend for the dynamic reloc. */
2974 if (! relocate)
2975 continue;
2976 break;
2977 }
2978 else if (r_type != R_M32R_10_PCREL_RELA)
2979 break;
2980 /* Fall through. */
2981
2982 case (int) R_M32R_10_PCREL :
2983 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2984 contents, offset,
2985 sec, relocation, addend);
2986 goto check_reloc;
2987
2988 case (int) R_M32R_HI16_SLO :
2989 case (int) R_M32R_HI16_ULO :
2990 {
2991 Elf_Internal_Rela *lorel;
2992
2993 /* We allow an arbitrary number of HI16 relocs before the
2994 LO16 reloc. This permits gcc to emit the HI and LO relocs
2995 itself. */
2996 for (lorel = rel + 1;
2997 (lorel < relend
2998 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2999 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3000 lorel++)
3001 continue;
3002 if (lorel < relend
3003 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3004 {
3005 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3006 contents, relocation + addend);
3007 r = bfd_reloc_ok;
3008 }
3009 else
3010 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3011 contents, offset,
3012 relocation, addend);
3013 }
3014
3015 goto check_reloc;
3016
3017 case (int) R_M32R_SDA16_RELA:
3018 case (int) R_M32R_SDA16 :
3019 {
3020 const char *name;
3021
3022 BFD_ASSERT (sec != NULL);
3023 name = bfd_get_section_name (abfd, sec);
3024
3025 if ( strcmp (name, ".sdata") == 0
3026 || strcmp (name, ".sbss") == 0
3027 || strcmp (name, ".scommon") == 0)
3028 {
3029 bfd_vma sda_base;
3030 bfd *out_bfd = sec->output_section->owner;
3031
3032 r = m32r_elf_final_sda_base (out_bfd, info,
3033 &errmsg,
3034 &sda_base);
3035 if (r != bfd_reloc_ok)
3036 {
3037 ret = FALSE;
3038 goto check_reloc;
3039 }
3040
3041 /* At this point `relocation' contains the object's
3042 address. */
3043 relocation -= sda_base;
3044 /* Now it contains the offset from _SDA_BASE_. */
3045 }
3046 else
3047 {
3048 (*_bfd_error_handler)
3049 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3050 input_bfd,
3051 sec,
3052 sym_name,
3053 m32r_elf_howto_table[(int) r_type].name);
3054 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3055 ret = FALSE;
3056 continue;
3057 }
3058 }
3059 /* Fall through. */
3060
3061 default : /* OLD_M32R_RELOC */
3062
3063 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3064 contents, offset,
3065 relocation, addend);
3066 goto check_reloc;
3067 }
3068
3069 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3070 contents, rel->r_offset,
3071 relocation, rel->r_addend);
3072
3073 }
3074
3075 check_reloc:
3076
3077 if (r != bfd_reloc_ok)
3078 {
3079 /* FIXME: This should be generic enough to go in a utility. */
3080 const char *name;
3081
3082 if (h != NULL)
3083 name = h->root.root.string;
3084 else
3085 {
3086 name = (bfd_elf_string_from_elf_section
3087 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3088 if (name == NULL || *name == '\0')
3089 name = bfd_section_name (input_bfd, sec);
3090 }
3091
3092 if (errmsg != NULL)
3093 goto common_error;
3094
3095 switch (r)
3096 {
3097 case bfd_reloc_overflow:
3098 if (! ((*info->callbacks->reloc_overflow)
3099 (info, (h ? &h->root : NULL), name, howto->name,
3100 (bfd_vma) 0, input_bfd, input_section, offset)))
3101 return FALSE;
3102 break;
3103
3104 case bfd_reloc_undefined:
3105 if (! ((*info->callbacks->undefined_symbol)
3106 (info, name, input_bfd, input_section,
3107 offset, TRUE)))
3108 return FALSE;
3109 break;
3110
3111 case bfd_reloc_outofrange:
3112 errmsg = _("internal error: out of range error");
3113 goto common_error;
3114
3115 case bfd_reloc_notsupported:
3116 errmsg = _("internal error: unsupported relocation error");
3117 goto common_error;
3118
3119 case bfd_reloc_dangerous:
3120 errmsg = _("internal error: dangerous error");
3121 goto common_error;
3122
3123 default:
3124 errmsg = _("internal error: unknown error");
3125 /* fall through */
3126
3127 common_error:
3128 if (!((*info->callbacks->warning)
3129 (info, errmsg, name, input_bfd, input_section,
3130 offset)))
3131 return FALSE;
3132 break;
3133 }
3134 }
3135 }
3136
3137 return ret;
3138 }
3139
3140 /* Finish up dynamic symbol handling. We set the contents of various
3141 dynamic sections here. */
3142
3143 static bfd_boolean
3144 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3145 struct bfd_link_info *info,
3146 struct elf_link_hash_entry *h,
3147 Elf_Internal_Sym *sym)
3148 {
3149 struct elf_m32r_link_hash_table *htab;
3150 bfd *dynobj;
3151 bfd_byte *loc;
3152
3153 #ifdef DEBUG_PIC
3154 printf ("m32r_elf_finish_dynamic_symbol()\n");
3155 #endif
3156
3157 htab = m32r_elf_hash_table (info);
3158 dynobj = htab->root.dynobj;
3159
3160 if (h->plt.offset != (bfd_vma) -1)
3161 {
3162 asection *splt;
3163 asection *sgot;
3164 asection *srela;
3165
3166 bfd_vma plt_index;
3167 bfd_vma got_offset;
3168 Elf_Internal_Rela rela;
3169
3170 /* This symbol has an entry in the procedure linkage table. Set
3171 it up. */
3172
3173 BFD_ASSERT (h->dynindx != -1);
3174
3175 splt = htab->splt;
3176 sgot = htab->sgotplt;
3177 srela = htab->srelplt;
3178 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3179
3180 /* Get the index in the procedure linkage table which
3181 corresponds to this symbol. This is the index of this symbol
3182 in all the symbols for which we are making plt entries. The
3183 first entry in the procedure linkage table is reserved. */
3184 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3185
3186 /* Get the offset into the .got table of the entry that
3187 corresponds to this function. Each .got entry is 4 bytes.
3188 The first three are reserved. */
3189 got_offset = (plt_index + 3) * 4;
3190
3191 /* Fill in the entry in the procedure linkage table. */
3192 if (! info->shared)
3193 {
3194 bfd_put_32 (output_bfd,
3195 (PLT_ENTRY_WORD0b
3196 + (((sgot->output_section->vma
3197 + sgot->output_offset
3198 + got_offset) >> 16) & 0xffff)),
3199 splt->contents + h->plt.offset);
3200 bfd_put_32 (output_bfd,
3201 (PLT_ENTRY_WORD1b
3202 + ((sgot->output_section->vma
3203 + sgot->output_offset
3204 + got_offset) & 0xffff)),
3205 splt->contents + h->plt.offset + 4);
3206 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3207 splt->contents + h->plt.offset + 8);
3208 bfd_put_32 (output_bfd,
3209 (PLT_ENTRY_WORD3
3210 + plt_index * sizeof (Elf32_External_Rela)),
3211 splt->contents + h->plt.offset + 12);
3212 bfd_put_32 (output_bfd,
3213 (PLT_ENTRY_WORD4
3214 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3215 splt->contents + h->plt.offset + 16);
3216 }
3217 else
3218 {
3219 bfd_put_32 (output_bfd,
3220 PLT_ENTRY_WORD0 + got_offset,
3221 splt->contents + h->plt.offset);
3222 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3223 splt->contents + h->plt.offset + 4);
3224 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3225 splt->contents + h->plt.offset + 8);
3226 bfd_put_32 (output_bfd,
3227 (PLT_ENTRY_WORD3
3228 + plt_index * sizeof (Elf32_External_Rela)),
3229 splt->contents + h->plt.offset + 12);
3230 bfd_put_32 (output_bfd,
3231 (PLT_ENTRY_WORD4
3232 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3233 splt->contents + h->plt.offset + 16);
3234 }
3235
3236 /* Fill in the entry in the global offset table. */
3237 bfd_put_32 (output_bfd,
3238 (splt->output_section->vma
3239 + splt->output_offset
3240 + h->plt.offset
3241 + 12), /* same offset */
3242 sgot->contents + got_offset);
3243
3244 /* Fill in the entry in the .rela.plt section. */
3245 rela.r_offset = (sgot->output_section->vma
3246 + sgot->output_offset
3247 + got_offset);
3248 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3249 rela.r_addend = 0;
3250 loc = srela->contents;
3251 loc += plt_index * sizeof (Elf32_External_Rela);
3252 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3253
3254 if (!h->def_regular)
3255 {
3256 /* Mark the symbol as undefined, rather than as defined in
3257 the .plt section. Leave the value alone. */
3258 sym->st_shndx = SHN_UNDEF;
3259 }
3260 }
3261
3262 if (h->got.offset != (bfd_vma) -1)
3263 {
3264 asection *sgot;
3265 asection *srela;
3266 Elf_Internal_Rela rela;
3267
3268 /* This symbol has an entry in the global offset table. Set it
3269 up. */
3270
3271 sgot = htab->sgot;
3272 srela = htab->srelgot;
3273 BFD_ASSERT (sgot != NULL && srela != NULL);
3274
3275 rela.r_offset = (sgot->output_section->vma
3276 + sgot->output_offset
3277 + (h->got.offset &~ 1));
3278
3279 /* If this is a -Bsymbolic link, and the symbol is defined
3280 locally, we just want to emit a RELATIVE reloc. Likewise if
3281 the symbol was forced to be local because of a version file.
3282 The entry in the global offset table will already have been
3283 initialized in the relocate_section function. */
3284 if (info->shared
3285 && (info->symbolic
3286 || h->dynindx == -1
3287 || h->forced_local)
3288 && h->def_regular)
3289 {
3290 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3291 rela.r_addend = (h->root.u.def.value
3292 + h->root.u.def.section->output_section->vma
3293 + h->root.u.def.section->output_offset);
3294 }
3295 else
3296 {
3297 BFD_ASSERT ((h->got.offset & 1) == 0);
3298 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3299 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3300 rela.r_addend = 0;
3301 }
3302
3303 loc = srela->contents;
3304 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3305 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3306 ++srela->reloc_count;
3307 }
3308
3309 if (h->needs_copy)
3310 {
3311 asection *s;
3312 Elf_Internal_Rela rela;
3313
3314 /* This symbols needs a copy reloc. Set it up. */
3315
3316 BFD_ASSERT (h->dynindx != -1
3317 && (h->root.type == bfd_link_hash_defined
3318 || h->root.type == bfd_link_hash_defweak));
3319
3320 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3321 ".rela.bss");
3322 BFD_ASSERT (s != NULL);
3323
3324 rela.r_offset = (h->root.u.def.value
3325 + h->root.u.def.section->output_section->vma
3326 + h->root.u.def.section->output_offset);
3327 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3328 rela.r_addend = 0;
3329 loc = s->contents;
3330 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3331 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3332 ++s->reloc_count;
3333 }
3334
3335 /* Mark some specially defined symbols as absolute. */
3336 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3337 || h == htab->root.hgot)
3338 sym->st_shndx = SHN_ABS;
3339
3340 return TRUE;
3341 }
3342
3343
3344 /* Finish up the dynamic sections. */
3345
3346 static bfd_boolean
3347 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3348 struct bfd_link_info *info)
3349 {
3350 struct elf_m32r_link_hash_table *htab;
3351 bfd *dynobj;
3352 asection *sdyn;
3353 asection *sgot;
3354
3355 #ifdef DEBUG_PIC
3356 printf ("m32r_elf_finish_dynamic_sections()\n");
3357 #endif
3358
3359 htab = m32r_elf_hash_table (info);
3360 dynobj = htab->root.dynobj;
3361
3362 sgot = htab->sgotplt;
3363 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3364
3365 if (htab->root.dynamic_sections_created)
3366 {
3367 asection *splt;
3368 Elf32_External_Dyn *dyncon, *dynconend;
3369
3370 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3371
3372 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3373 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3374
3375 for (; dyncon < dynconend; dyncon++)
3376 {
3377 Elf_Internal_Dyn dyn;
3378 const char *name;
3379 asection *s;
3380
3381 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3382
3383 switch (dyn.d_tag)
3384 {
3385 default:
3386 break;
3387
3388 case DT_PLTGOT:
3389 name = ".got";
3390 s = htab->sgot->output_section;
3391 goto get_vma;
3392 case DT_JMPREL:
3393 name = ".rela.plt";
3394 s = htab->srelplt->output_section;
3395 get_vma:
3396 BFD_ASSERT (s != NULL);
3397 dyn.d_un.d_ptr = s->vma;
3398 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3399 break;
3400
3401 case DT_PLTRELSZ:
3402 s = htab->srelplt->output_section;
3403 BFD_ASSERT (s != NULL);
3404 dyn.d_un.d_val = s->size;
3405 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3406 break;
3407
3408 case DT_RELASZ:
3409 /* My reading of the SVR4 ABI indicates that the
3410 procedure linkage table relocs (DT_JMPREL) should be
3411 included in the overall relocs (DT_RELA). This is
3412 what Solaris does. However, UnixWare can not handle
3413 that case. Therefore, we override the DT_RELASZ entry
3414 here to make it not include the JMPREL relocs. Since
3415 the linker script arranges for .rela.plt to follow all
3416 other relocation sections, we don't have to worry
3417 about changing the DT_RELA entry. */
3418 if (htab->srelplt != NULL)
3419 {
3420 s = htab->srelplt->output_section;
3421 dyn.d_un.d_val -= s->size;
3422 }
3423 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3424 break;
3425 }
3426 }
3427
3428 /* Fill in the first entry in the procedure linkage table. */
3429 splt = htab->splt;
3430 if (splt && splt->size > 0)
3431 {
3432 if (info->shared)
3433 {
3434 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3435 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3436 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3437 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3438 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3439 }
3440 else
3441 {
3442 unsigned long addr;
3443 /* addr = .got + 4 */
3444 addr = sgot->output_section->vma + sgot->output_offset + 4;
3445 bfd_put_32 (output_bfd,
3446 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3447 splt->contents);
3448 bfd_put_32 (output_bfd,
3449 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3450 splt->contents + 4);
3451 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3452 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3453 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3454 }
3455
3456 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3457 PLT_ENTRY_SIZE;
3458 }
3459 }
3460
3461 /* Fill in the first three entries in the global offset table. */
3462 if (sgot && sgot->size > 0)
3463 {
3464 if (sdyn == NULL)
3465 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3466 else
3467 bfd_put_32 (output_bfd,
3468 sdyn->output_section->vma + sdyn->output_offset,
3469 sgot->contents);
3470 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3471 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3472
3473 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3474 }
3475
3476 return TRUE;
3477 }
3478
3479 \f
3480 /* Set the right machine number. */
3481
3482 static bfd_boolean
3483 m32r_elf_object_p (bfd *abfd)
3484 {
3485 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3486 {
3487 default:
3488 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3489 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3490 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3491 }
3492 return TRUE;
3493 }
3494
3495 /* Store the machine number in the flags field. */
3496
3497 static void
3498 m32r_elf_final_write_processing (bfd *abfd,
3499 bfd_boolean linker ATTRIBUTE_UNUSED)
3500 {
3501 unsigned long val;
3502
3503 switch (bfd_get_mach (abfd))
3504 {
3505 default:
3506 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3507 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3508 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3509 }
3510
3511 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3512 elf_elfheader (abfd)->e_flags |= val;
3513 }
3514
3515 /* Function to keep M32R specific file flags. */
3516
3517 static bfd_boolean
3518 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3519 {
3520 BFD_ASSERT (!elf_flags_init (abfd)
3521 || elf_elfheader (abfd)->e_flags == flags);
3522
3523 elf_elfheader (abfd)->e_flags = flags;
3524 elf_flags_init (abfd) = TRUE;
3525 return TRUE;
3526 }
3527
3528 /* Merge backend specific data from an object file to the output
3529 object file when linking. */
3530
3531 static bfd_boolean
3532 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3533 {
3534 flagword out_flags;
3535 flagword in_flags;
3536
3537 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3538 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3539 return TRUE;
3540
3541 in_flags = elf_elfheader (ibfd)->e_flags;
3542 out_flags = elf_elfheader (obfd)->e_flags;
3543
3544 if (! elf_flags_init (obfd))
3545 {
3546 /* If the input is the default architecture then do not
3547 bother setting the flags for the output architecture,
3548 instead allow future merges to do this. If no future
3549 merges ever set these flags then they will retain their
3550 unitialised values, which surprise surprise, correspond
3551 to the default values. */
3552 if (bfd_get_arch_info (ibfd)->the_default)
3553 return TRUE;
3554
3555 elf_flags_init (obfd) = TRUE;
3556 elf_elfheader (obfd)->e_flags = in_flags;
3557
3558 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3559 && bfd_get_arch_info (obfd)->the_default)
3560 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3561 bfd_get_mach (ibfd));
3562
3563 return TRUE;
3564 }
3565
3566 /* Check flag compatibility. */
3567 if (in_flags == out_flags)
3568 return TRUE;
3569
3570 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3571 {
3572 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3573 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3574 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3575 {
3576 (*_bfd_error_handler)
3577 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3578
3579 bfd_set_error (bfd_error_bad_value);
3580 return FALSE;
3581 }
3582 }
3583
3584 return TRUE;
3585 }
3586
3587 /* Display the flags field. */
3588
3589 static bfd_boolean
3590 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3591 {
3592 FILE * file = (FILE *) ptr;
3593
3594 BFD_ASSERT (abfd != NULL && ptr != NULL);
3595
3596 _bfd_elf_print_private_bfd_data (abfd, ptr);
3597
3598 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3599
3600 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3601 {
3602 default:
3603 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3604 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3605 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3606 }
3607
3608 fputc ('\n', file);
3609
3610 return TRUE;
3611 }
3612
3613 static asection *
3614 m32r_elf_gc_mark_hook (asection *sec,
3615 struct bfd_link_info *info,
3616 Elf_Internal_Rela *rel,
3617 struct elf_link_hash_entry *h,
3618 Elf_Internal_Sym *sym)
3619 {
3620 if (h != NULL)
3621 switch (ELF32_R_TYPE (rel->r_info))
3622 {
3623 case R_M32R_GNU_VTINHERIT:
3624 case R_M32R_GNU_VTENTRY:
3625 case R_M32R_RELA_GNU_VTINHERIT:
3626 case R_M32R_RELA_GNU_VTENTRY:
3627 return NULL;
3628 }
3629
3630 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3631 }
3632
3633 static bfd_boolean
3634 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3635 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3636 asection *sec ATTRIBUTE_UNUSED,
3637 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3638 {
3639 /* Update the got entry reference counts for the section being removed. */
3640 Elf_Internal_Shdr *symtab_hdr;
3641 struct elf_link_hash_entry **sym_hashes;
3642 bfd_signed_vma *local_got_refcounts;
3643 const Elf_Internal_Rela *rel, *relend;
3644
3645 if (info->relocatable)
3646 return TRUE;
3647
3648 elf_section_data (sec)->local_dynrel = NULL;
3649
3650 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3651 sym_hashes = elf_sym_hashes (abfd);
3652 local_got_refcounts = elf_local_got_refcounts (abfd);
3653
3654 relend = relocs + sec->reloc_count;
3655 for (rel = relocs; rel < relend; rel++)
3656 {
3657 unsigned long r_symndx;
3658 struct elf_link_hash_entry *h = NULL;
3659
3660 r_symndx = ELF32_R_SYM (rel->r_info);
3661 if (r_symndx >= symtab_hdr->sh_info)
3662 {
3663 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3664 while (h->root.type == bfd_link_hash_indirect
3665 || h->root.type == bfd_link_hash_warning)
3666 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3667 }
3668
3669 switch (ELF32_R_TYPE (rel->r_info))
3670 {
3671 case R_M32R_GOT16_HI_ULO:
3672 case R_M32R_GOT16_HI_SLO:
3673 case R_M32R_GOT16_LO:
3674 case R_M32R_GOTOFF:
3675 case R_M32R_GOTOFF_HI_ULO:
3676 case R_M32R_GOTOFF_HI_SLO:
3677 case R_M32R_GOTOFF_LO:
3678 case R_M32R_GOT24:
3679 case R_M32R_GOTPC_HI_ULO:
3680 case R_M32R_GOTPC_HI_SLO:
3681 case R_M32R_GOTPC_LO:
3682 case R_M32R_GOTPC24:
3683 if (h != NULL)
3684 {
3685 if (h->got.refcount > 0)
3686 h->got.refcount--;
3687 }
3688 else
3689 {
3690 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3691 local_got_refcounts[r_symndx]--;
3692 }
3693 break;
3694
3695 case R_M32R_16_RELA:
3696 case R_M32R_24_RELA:
3697 case R_M32R_32_RELA:
3698 case R_M32R_REL32:
3699 case R_M32R_HI16_ULO_RELA:
3700 case R_M32R_HI16_SLO_RELA:
3701 case R_M32R_LO16_RELA:
3702 case R_M32R_SDA16_RELA:
3703 case R_M32R_10_PCREL_RELA:
3704 case R_M32R_18_PCREL_RELA:
3705 case R_M32R_26_PCREL_RELA:
3706 if (h != NULL)
3707 {
3708 struct elf_m32r_link_hash_entry *eh;
3709 struct elf_m32r_dyn_relocs **pp;
3710 struct elf_m32r_dyn_relocs *p;
3711
3712 if (!info->shared && h->plt.refcount > 0)
3713 h->plt.refcount -= 1;
3714
3715 eh = (struct elf_m32r_link_hash_entry *) h;
3716
3717 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3718 if (p->sec == sec)
3719 {
3720 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3721 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3722 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3723 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3724 p->pc_count -= 1;
3725 p->count -= 1;
3726 if (p->count == 0)
3727 *pp = p->next;
3728 break;
3729 }
3730 }
3731 break;
3732
3733 case R_M32R_26_PLTREL:
3734 if (h != NULL)
3735 {
3736 if (h->plt.refcount > 0)
3737 h->plt.refcount--;
3738 }
3739 break;
3740
3741 default:
3742 break;
3743 }
3744 }
3745
3746 return TRUE;
3747 }
3748
3749 /* Look through the relocs for a section during the first phase.
3750 Since we don't do .gots or .plts, we just need to consider the
3751 virtual table relocs for gc. */
3752
3753 static bfd_boolean
3754 m32r_elf_check_relocs (bfd *abfd,
3755 struct bfd_link_info *info,
3756 asection *sec,
3757 const Elf_Internal_Rela *relocs)
3758 {
3759 Elf_Internal_Shdr *symtab_hdr;
3760 struct elf_link_hash_entry **sym_hashes;
3761 const Elf_Internal_Rela *rel;
3762 const Elf_Internal_Rela *rel_end;
3763 struct elf_m32r_link_hash_table *htab;
3764 bfd *dynobj;
3765 bfd_vma *local_got_offsets;
3766 asection *sgot, *srelgot, *sreloc;
3767
3768 if (info->relocatable)
3769 return TRUE;
3770
3771 sgot = srelgot = sreloc = NULL;
3772
3773 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3774 sym_hashes = elf_sym_hashes (abfd);
3775
3776 htab = m32r_elf_hash_table (info);
3777 dynobj = htab->root.dynobj;
3778 local_got_offsets = elf_local_got_offsets (abfd);
3779
3780 rel_end = relocs + sec->reloc_count;
3781 for (rel = relocs; rel < rel_end; rel++)
3782 {
3783 int r_type;
3784 struct elf_link_hash_entry *h;
3785 unsigned long r_symndx;
3786
3787 r_symndx = ELF32_R_SYM (rel->r_info);
3788 r_type = ELF32_R_TYPE (rel->r_info);
3789 if (r_symndx < symtab_hdr->sh_info)
3790 h = NULL;
3791 else
3792 {
3793 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3794 while (h->root.type == bfd_link_hash_indirect
3795 || h->root.type == bfd_link_hash_warning)
3796 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3797 }
3798
3799 /* Some relocs require a global offset table. */
3800 if (htab->sgot == NULL)
3801 {
3802 switch (r_type)
3803 {
3804 case R_M32R_GOT16_HI_ULO:
3805 case R_M32R_GOT16_HI_SLO:
3806 case R_M32R_GOTOFF:
3807 case R_M32R_GOTOFF_HI_ULO:
3808 case R_M32R_GOTOFF_HI_SLO:
3809 case R_M32R_GOTOFF_LO:
3810 case R_M32R_GOT16_LO:
3811 case R_M32R_GOTPC24:
3812 case R_M32R_GOTPC_HI_ULO:
3813 case R_M32R_GOTPC_HI_SLO:
3814 case R_M32R_GOTPC_LO:
3815 case R_M32R_GOT24:
3816 if (dynobj == NULL)
3817 htab->root.dynobj = dynobj = abfd;
3818 if (! create_got_section (dynobj, info))
3819 return FALSE;
3820 break;
3821
3822 default:
3823 break;
3824 }
3825 }
3826
3827 switch (r_type)
3828 {
3829 case R_M32R_GOT16_HI_ULO:
3830 case R_M32R_GOT16_HI_SLO:
3831 case R_M32R_GOT16_LO:
3832 case R_M32R_GOT24:
3833
3834 if (h != NULL)
3835 h->got.refcount += 1;
3836 else
3837 {
3838 bfd_signed_vma *local_got_refcounts;
3839
3840 /* This is a global offset table entry for a local
3841 symbol. */
3842 local_got_refcounts = elf_local_got_refcounts (abfd);
3843 if (local_got_refcounts == NULL)
3844 {
3845 bfd_size_type size;
3846
3847 size = symtab_hdr->sh_info;
3848 size *= sizeof (bfd_signed_vma);
3849 local_got_refcounts = bfd_zalloc (abfd, size);
3850 if (local_got_refcounts == NULL)
3851 return FALSE;
3852 elf_local_got_refcounts (abfd) = local_got_refcounts;
3853 }
3854 local_got_refcounts[r_symndx] += 1;
3855 }
3856 break;
3857
3858 case R_M32R_26_PLTREL:
3859 /* This symbol requires a procedure linkage table entry. We
3860 actually build the entry in adjust_dynamic_symbol,
3861 because this might be a case of linking PIC code without
3862 linking in any dynamic objects, in which case we don't
3863 need to generate a procedure linkage table after all. */
3864
3865 /* If this is a local symbol, we resolve it directly without
3866 creating a procedure linkage table entry. */
3867 if (h == NULL)
3868 continue;
3869
3870 if (h->forced_local)
3871 break;
3872
3873 h->needs_plt = 1;
3874 h->plt.refcount += 1;
3875 break;
3876
3877 case R_M32R_16_RELA:
3878 case R_M32R_24_RELA:
3879 case R_M32R_32_RELA:
3880 case R_M32R_REL32:
3881 case R_M32R_HI16_ULO_RELA:
3882 case R_M32R_HI16_SLO_RELA:
3883 case R_M32R_LO16_RELA:
3884 case R_M32R_SDA16_RELA:
3885 case R_M32R_10_PCREL_RELA:
3886 case R_M32R_18_PCREL_RELA:
3887 case R_M32R_26_PCREL_RELA:
3888
3889 if (h != NULL && !info->shared)
3890 {
3891 h->non_got_ref = 1;
3892 h->plt.refcount += 1;
3893 }
3894
3895 /* If we are creating a shared library, and this is a reloc
3896 against a global symbol, or a non PC relative reloc
3897 against a local symbol, then we need to copy the reloc
3898 into the shared library. However, if we are linking with
3899 -Bsymbolic, we do not need to copy a reloc against a
3900 global symbol which is defined in an object we are
3901 including in the link (i.e., DEF_REGULAR is set). At
3902 this point we have not seen all the input files, so it is
3903 possible that DEF_REGULAR is not set now but will be set
3904 later (it is never cleared). We account for that
3905 possibility below by storing information in the
3906 dyn_relocs field of the hash table entry. A similar
3907 situation occurs when creating shared libraries and symbol
3908 visibility changes render the symbol local.
3909
3910 If on the other hand, we are creating an executable, we
3911 may need to keep relocations for symbols satisfied by a
3912 dynamic library if we manage to avoid copy relocs for the
3913 symbol. */
3914 if ((info->shared
3915 && (sec->flags & SEC_ALLOC) != 0
3916 && (( r_type != R_M32R_26_PCREL_RELA
3917 && r_type != R_M32R_18_PCREL_RELA
3918 && r_type != R_M32R_10_PCREL_RELA
3919 && r_type != R_M32R_REL32)
3920 || (h != NULL
3921 && (! info->symbolic
3922 || h->root.type == bfd_link_hash_defweak
3923 || !h->def_regular))))
3924 || (!info->shared
3925 && (sec->flags & SEC_ALLOC) != 0
3926 && h != NULL
3927 && (h->root.type == bfd_link_hash_defweak
3928 || !h->def_regular)))
3929 {
3930 struct elf_m32r_dyn_relocs *p;
3931 struct elf_m32r_dyn_relocs **head;
3932
3933 if (dynobj == NULL)
3934 htab->root.dynobj = dynobj = abfd;
3935
3936 /* When creating a shared object, we must copy these
3937 relocs into the output file. We create a reloc
3938 section in dynobj and make room for the reloc. */
3939 if (sreloc == NULL)
3940 {
3941 sreloc = _bfd_elf_make_dynamic_reloc_section
3942 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3943
3944 if (sreloc == NULL)
3945 return FALSE;
3946 }
3947
3948 /* If this is a global symbol, we count the number of
3949 relocations we need for this symbol. */
3950 if (h != NULL)
3951 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3952 else
3953 {
3954 asection *s;
3955 void *vpp;
3956
3957 /* Track dynamic relocs needed for local syms too. */
3958 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3959 sec, r_symndx);
3960 if (s == NULL)
3961 return FALSE;
3962
3963 vpp = &elf_section_data (s)->local_dynrel;
3964 head = (struct elf_m32r_dyn_relocs **) vpp;
3965 }
3966
3967 p = *head;
3968 if (p == NULL || p->sec != sec)
3969 {
3970 bfd_size_type amt = sizeof (*p);
3971
3972 p = bfd_alloc (dynobj, amt);
3973 if (p == NULL)
3974 return FALSE;
3975 p->next = *head;
3976 *head = p;
3977 p->sec = sec;
3978 p->count = 0;
3979 p->pc_count = 0;
3980 }
3981
3982 p->count += 1;
3983 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3984 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3985 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3986 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3987 p->pc_count += 1;
3988 }
3989 break;
3990
3991 /* This relocation describes the C++ object vtable hierarchy.
3992 Reconstruct it for later use during GC. */
3993 case R_M32R_RELA_GNU_VTINHERIT:
3994 case R_M32R_GNU_VTINHERIT:
3995 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3996 return FALSE;
3997 break;
3998
3999 /* This relocation describes which C++ vtable entries are actually
4000 used. Record for later use during GC. */
4001 case R_M32R_GNU_VTENTRY:
4002 BFD_ASSERT (h != NULL);
4003 if (h != NULL
4004 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4005 return FALSE;
4006 break;
4007 case R_M32R_RELA_GNU_VTENTRY:
4008 BFD_ASSERT (h != NULL);
4009 if (h != NULL
4010 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4011 return FALSE;
4012 break;
4013 }
4014 }
4015
4016 return TRUE;
4017 }
4018
4019 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4020 {
4021 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4022 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4023 { NULL, 0, 0, 0, 0 }
4024 };
4025
4026 static bfd_boolean
4027 m32r_elf_fake_sections (bfd *abfd,
4028 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4029 asection *sec)
4030 {
4031 const char *name;
4032
4033 name = bfd_get_section_name (abfd, sec);
4034
4035 /* The generic elf_fake_sections will set up REL_HDR using the
4036 default kind of relocations. But, we may actually need both
4037 kinds of relocations, so we set up the second header here.
4038
4039 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4040 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4041 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4042 of the resulting empty .rela.<section> sections starts with
4043 sh_offset == object size, and ld doesn't allow that. While the check
4044 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4045 avoided by not emitting those useless sections in the first place. */
4046 if ((sec->flags & SEC_RELOC) != 0)
4047 {
4048 struct bfd_elf_section_data *esd;
4049 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4050
4051 esd = elf_section_data (sec);
4052 BFD_ASSERT (esd->rel_hdr2 == NULL);
4053 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4054 if (!esd->rel_hdr2)
4055 return FALSE;
4056 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4057 !sec->use_rela_p);
4058 }
4059
4060 return TRUE;
4061 }
4062
4063 static enum elf_reloc_type_class
4064 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4065 {
4066 switch ((int) ELF32_R_TYPE (rela->r_info))
4067 {
4068 case R_M32R_RELATIVE: return reloc_class_relative;
4069 case R_M32R_JMP_SLOT: return reloc_class_plt;
4070 case R_M32R_COPY: return reloc_class_copy;
4071 default: return reloc_class_normal;
4072 }
4073 }
4074 \f
4075 #define ELF_ARCH bfd_arch_m32r
4076 #define ELF_MACHINE_CODE EM_M32R
4077 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4078 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4079
4080 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4081 #define TARGET_BIG_NAME "elf32-m32r"
4082 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4083 #define TARGET_LITTLE_NAME "elf32-m32rle"
4084
4085 #define elf_info_to_howto m32r_info_to_howto
4086 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4087 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4088 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4089 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4090 #define elf_backend_relocate_section m32r_elf_relocate_section
4091 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4092 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4093 #define elf_backend_check_relocs m32r_elf_check_relocs
4094
4095 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4096 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4097 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4098 #define elf_backend_omit_section_dynsym \
4099 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4100 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4101 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4102 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4103 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4104 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4105
4106 #define elf_backend_can_gc_sections 1
4107 /*#if !USE_REL
4108 #define elf_backend_rela_normal 1
4109 #endif*/
4110 #define elf_backend_can_refcount 1
4111 #define elf_backend_want_got_plt 1
4112 #define elf_backend_plt_readonly 1
4113 #define elf_backend_want_plt_sym 0
4114 #define elf_backend_got_header_size 12
4115
4116 #define elf_backend_may_use_rel_p 1
4117 #ifdef USE_M32R_OLD_RELOC
4118 #define elf_backend_default_use_rela_p 0
4119 #define elf_backend_may_use_rela_p 0
4120 #else
4121 #define elf_backend_default_use_rela_p 1
4122 #define elf_backend_may_use_rela_p 1
4123 #define elf_backend_fake_sections m32r_elf_fake_sections
4124 #endif
4125
4126 #define elf_backend_object_p m32r_elf_object_p
4127 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4128 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4129 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4130 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4131 #define elf_backend_special_sections m32r_elf_special_sections
4132
4133 #include "elf32-target.h"
4134
4135 #undef ELF_MAXPAGESIZE
4136 #define ELF_MAXPAGESIZE 0x1000
4137
4138 #undef TARGET_BIG_SYM
4139 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4140 #undef TARGET_BIG_NAME
4141 #define TARGET_BIG_NAME "elf32-m32r-linux"
4142 #undef TARGET_LITTLE_SYM
4143 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4144 #undef TARGET_LITTLE_NAME
4145 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4146 #undef elf32_bed
4147 #define elf32_bed elf32_m32r_lin_bed
4148
4149 #include "elf32-target.h"
4150
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