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[deliverable/binutils-gdb.git] / bfd / elf32-m32r.c
1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/m32r.h"
26
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
29
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
33 to work with. */
34 /* #define USE_REL 1
35
36 #ifndef USE_REL
37 #define USE_REL 0
38 #endif */
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
40
41 /* Functions for the M32R ELF linker. */
42
43 /* The name of the dynamic interpreter. This is put in the .interp
44 section. */
45
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
47
48 /* The nop opcode we use. */
49
50 #define M32R_NOP 0x7000f000
51
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
53
54 /* The size in bytes of an entry in the procedure linkage table. */
55
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
58
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
62
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
68
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
74
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
82
83
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
85
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 reloc_howto_type *howto,
89 asection *input_section,
90 bfd_byte *data,
91 bfd_vma offset,
92 asection *symbol_section ATTRIBUTE_UNUSED,
93 bfd_vma symbol_value,
94 bfd_vma addend)
95 {
96 bfd_signed_vma relocation;
97 unsigned long x;
98 bfd_reloc_status_type status;
99
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
103
104 relocation = symbol_value + addend;
105 /* Make it pc relative. */
106 relocation -= (input_section->output_section->vma
107 + input_section->output_offset);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation -= (offset & -(bfd_vma) 4);
111
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
114 else
115 status = bfd_reloc_ok;
116
117 x = bfd_get_16 (abfd, data + offset);
118 relocation >>= howto->rightshift;
119 relocation <<= howto->bitpos;
120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
122
123 return status;
124 }
125
126 /* Handle the R_M32R_10_PCREL reloc. */
127
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd * abfd,
130 arelent * reloc_entry,
131 asymbol * symbol,
132 void * data,
133 asection * input_section,
134 bfd * output_bfd,
135 char ** error_message ATTRIBUTE_UNUSED)
136 {
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd != NULL
139 && (symbol->flags & BSF_SECTION_SYM) == 0
140 && (! reloc_entry->howto->partial_inplace
141 || reloc_entry->addend == 0))
142 {
143 reloc_entry->address += input_section->output_offset;
144 return bfd_reloc_ok;
145 }
146
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
150
151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
152 input_section,
153 data, reloc_entry->address,
154 symbol->section,
155 (symbol->value
156 + symbol->section->output_section->vma
157 + symbol->section->output_offset),
158 reloc_entry->addend);
159 }
160
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
163
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd *input_bfd,
166 arelent *reloc_entry,
167 asymbol *symbol,
168 void * data,
169 asection *input_section,
170 bfd *output_bfd,
171 char **error_message ATTRIBUTE_UNUSED)
172 {
173 bfd_reloc_status_type ret;
174 bfd_vma relocation;
175 bfd_byte *inplace_address;
176
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd != NULL
181 && (symbol->flags & BSF_SECTION_SYM) == 0
182 && reloc_entry->addend == 0)
183 {
184 reloc_entry->address += input_section->output_offset;
185 return bfd_reloc_ok;
186 }
187
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
193
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196 return bfd_reloc_outofrange;
197
198 ret = bfd_reloc_ok;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
202
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
205 relocation = 0;
206 else
207 relocation = symbol->value;
208
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
211 {
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
214 }
215
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
218
219 #define DOIT(x) \
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
223
224 switch (reloc_entry->howto->size)
225 {
226 case 1:
227 {
228 short x = bfd_get_16 (input_bfd, inplace_address);
229 DOIT (x);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
231 }
232 break;
233 case 2:
234 {
235 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
236 DOIT (x);
237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
238 }
239 break;
240 default:
241 BFD_ASSERT (0);
242 }
243
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
246
247 return ret;
248 }
249
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
255
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 arelent *reloc_entry,
259 asymbol *symbol,
260 void * data ATTRIBUTE_UNUSED,
261 asection *input_section,
262 bfd *output_bfd,
263 char **error_message ATTRIBUTE_UNUSED)
264 {
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd != NULL
267 && (symbol->flags & BSF_SECTION_SYM) == 0
268 && (! reloc_entry->howto->partial_inplace
269 || reloc_entry->addend == 0))
270 {
271 reloc_entry->address += input_section->output_offset;
272 return bfd_reloc_ok;
273 }
274
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
278
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
281 abort ();
282 }
283
284 \f
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
300
301 struct m32r_hi16
302 {
303 struct m32r_hi16 *next;
304 bfd_byte *addr;
305 bfd_vma addend;
306 };
307
308 /* FIXME: This should not be a static variable. */
309
310 static struct m32r_hi16 *m32r_hi16_list;
311
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 arelent *reloc_entry,
315 asymbol *symbol,
316 void * data,
317 asection *input_section,
318 bfd *output_bfd,
319 char **error_message ATTRIBUTE_UNUSED)
320 {
321 bfd_reloc_status_type ret;
322 bfd_vma relocation;
323 struct m32r_hi16 *n;
324
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd != NULL
329 && (symbol->flags & BSF_SECTION_SYM) == 0
330 && reloc_entry->addend == 0)
331 {
332 reloc_entry->address += input_section->output_offset;
333 return bfd_reloc_ok;
334 }
335
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
338 return bfd_reloc_outofrange;
339
340 ret = bfd_reloc_ok;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
344
345 if (bfd_is_com_section (symbol->section))
346 relocation = 0;
347 else
348 relocation = symbol->value;
349
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
353
354 /* Save the information, and let LO16 do the actual relocation. */
355 n = bfd_malloc ((bfd_size_type) sizeof *n);
356 if (n == NULL)
357 return bfd_reloc_outofrange;
358 n->addr = (bfd_byte *) data + reloc_entry->address;
359 n->addend = relocation;
360 n->next = m32r_hi16_list;
361 m32r_hi16_list = n;
362
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
365
366 return ret;
367 }
368
369 /* Handle an M32R ELF HI16 reloc. */
370
371 static void
372 m32r_elf_relocate_hi16 (bfd *input_bfd,
373 int type,
374 Elf_Internal_Rela *relhi,
375 Elf_Internal_Rela *rello,
376 bfd_byte *contents,
377 bfd_vma addend)
378 {
379 unsigned long insn;
380 bfd_vma addlo;
381
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
383
384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385 if (type == R_M32R_HI16_SLO)
386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
387 else
388 addlo &= 0xffff;
389
390 addend += ((insn & 0xffff) << 16) + addlo;
391
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
395 addend += 0x10000;
396
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
400 }
401
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
405
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd *input_bfd,
408 arelent *reloc_entry,
409 asymbol *symbol,
410 void * data,
411 asection *input_section,
412 bfd *output_bfd,
413 char **error_message)
414 {
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd != NULL
419 && (symbol->flags & BSF_SECTION_SYM) == 0
420 && reloc_entry->addend == 0)
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425
426 if (m32r_hi16_list != NULL)
427 {
428 struct m32r_hi16 *l;
429
430 l = m32r_hi16_list;
431 while (l != NULL)
432 {
433 unsigned long insn;
434 unsigned long val;
435 unsigned long vallo;
436 struct m32r_hi16 *next;
437
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn = bfd_get_32 (input_bfd, l->addr);
442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val = ((insn & 0xffff) << 16) + vallo;
445 val += l->addend;
446
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
449 val += 0x10000;
450
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
453
454 next = l->next;
455 free (l);
456 l = next;
457 }
458
459 m32r_hi16_list = NULL;
460 }
461
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 input_section, output_bfd, error_message);
469 }
470
471 \f
472 static reloc_howto_type m32r_elf_howto_table[] =
473 {
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 32, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_bitfield, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
491 0, /* rightshift */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
503
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 24, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
533
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
537 slot for pc. */
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
541 again. */
542 HOWTO (R_M32R_10_PCREL, /* type */
543 2, /* rightshift */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
545 10, /* bitsize */
546 TRUE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_signed, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE, /* partial_inplace */
552 0xff, /* src_mask */
553 0xff, /* dst_mask */
554 TRUE), /* pcrel_offset */
555
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
575 again. */
576 HOWTO (R_M32R_26_PCREL, /* type */
577 2, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 26, /* bitsize */
580 TRUE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
589
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_dont, /* complain_on_overflow */
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
607 16, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
619
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
634
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
649
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 0, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 0, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 EMPTY_HOWTO (13),
681 EMPTY_HOWTO (14),
682 EMPTY_HOWTO (15),
683 EMPTY_HOWTO (16),
684 EMPTY_HOWTO (17),
685 EMPTY_HOWTO (18),
686 EMPTY_HOWTO (19),
687 EMPTY_HOWTO (20),
688 EMPTY_HOWTO (21),
689 EMPTY_HOWTO (22),
690 EMPTY_HOWTO (23),
691 EMPTY_HOWTO (24),
692 EMPTY_HOWTO (25),
693 EMPTY_HOWTO (26),
694 EMPTY_HOWTO (27),
695 EMPTY_HOWTO (28),
696 EMPTY_HOWTO (29),
697 EMPTY_HOWTO (30),
698 EMPTY_HOWTO (31),
699 EMPTY_HOWTO (32),
700
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 32, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
730
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 24, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
745
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 10, /* bitsize */
750 TRUE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE, /* partial_inplace */
756 0xff, /* src_mask */
757 0xff, /* dst_mask */
758 TRUE), /* pcrel_offset */
759
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 TRUE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
774
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 26, /* bitsize */
780 TRUE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
789
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
792 16, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
804
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
819
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
849
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
854 0, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0, /* dst_mask */
863 FALSE), /* pcrel_offset */
864
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 0, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0, /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
884 32, /* bitsize */
885 TRUE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_bitfield, /* complain_on_overflow */
888 bfd_elf_generic_reloc,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE), /* pcrel_offset */
894
895 EMPTY_HOWTO (46),
896 EMPTY_HOWTO (47),
897
898 /* Like R_M32R_24, but referring to the GOT table entry for
899 the symbol. */
900 HOWTO (R_M32R_GOT24, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 24, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_unsigned, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
913
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL, /* type */
917 2, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 24, /* bitsize */
920 TRUE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_signed, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE), /* pcrel_offset */
929
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_bitfield, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* Like R_M32R_24, but used when setting global offset table
950 entries. */
951 HOWTO (R_M32R_GLOB_DAT, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_bitfield, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
964
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 32, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
979
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
982 addend. */
983 HOWTO (R_M32R_RELATIVE, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 32, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
996
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 24, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_bitfield, /* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1010
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1012 table register. */
1013 HOWTO (R_M32R_GOTPC24, /* type */
1014 0, /* rightshift */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 24, /* bitsize */
1017 TRUE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_unsigned, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE), /* pcrel_offset */
1026
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028 the symbol. */
1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1042
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044 the symbol. */
1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1060 the symbol. */
1061 HOWTO (R_M32R_GOT16_LO, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 0, /* bitpos */
1067 complain_overflow_dont, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1074
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077 the symbol. */
1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 bfd_elf_generic_reloc, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE), /* pcrel_offset */
1091
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094 the symbol. */
1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE), /* pcrel_offset */
1108
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1111 the symbol. */
1112 HOWTO (R_M32R_GOTPC_LO, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE), /* pcrel_offset */
1125
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 bfd_elf_generic_reloc, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167 };
1168
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1170
1171 struct m32r_reloc_map
1172 {
1173 bfd_reloc_code_real_type bfd_reloc_val;
1174 unsigned char elf_reloc_val;
1175 };
1176
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1179 {
1180 { BFD_RELOC_NONE, R_M32R_NONE },
1181 { BFD_RELOC_16, R_M32R_16 },
1182 { BFD_RELOC_32, R_M32R_32 },
1183 { BFD_RELOC_M32R_24, R_M32R_24 },
1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1193 };
1194 #else
1195 static const struct m32r_reloc_map m32r_reloc_map[] =
1196 {
1197 { BFD_RELOC_NONE, R_M32R_NONE },
1198 { BFD_RELOC_16, R_M32R_16_RELA },
1199 { BFD_RELOC_32, R_M32R_32_RELA },
1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1211
1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1229 };
1230 #endif
1231
1232 static reloc_howto_type *
1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 bfd_reloc_code_real_type code)
1235 {
1236 unsigned int i;
1237
1238 #ifdef USE_M32R_OLD_RELOC
1239 for (i = 0;
1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1241 i++)
1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1244
1245 #else /* ! USE_M32R_OLD_RELOC */
1246
1247 for (i = 0;
1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1249 i++)
1250 if (m32r_reloc_map[i].bfd_reloc_val == code)
1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1252 #endif
1253
1254 return NULL;
1255 }
1256
1257 /* Set the howto pointer for an M32R ELF reloc. */
1258
1259 static void
1260 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1261 arelent *cache_ptr,
1262 Elf_Internal_Rela *dst)
1263 {
1264 unsigned int r_type;
1265
1266 r_type = ELF32_R_TYPE (dst->r_info);
1267 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1268 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1269 }
1270
1271 static void
1272 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1273 arelent *cache_ptr,
1274 Elf_Internal_Rela *dst)
1275 {
1276 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1277 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1278 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1279 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1280 }
1281
1282 \f
1283 /* Given a BFD section, try to locate the corresponding ELF section
1284 index. */
1285
1286 static bfd_boolean
1287 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1288 asection *sec,
1289 int *retval)
1290 {
1291 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1292 {
1293 *retval = SHN_M32R_SCOMMON;
1294 return TRUE;
1295 }
1296 return FALSE;
1297 }
1298
1299 /* M32R ELF uses two common sections. One is the usual one, and the other
1300 is for small objects. All the small objects are kept together, and then
1301 referenced via one register, which yields faster assembler code. It is
1302 up to the compiler to emit an instruction to load the register with
1303 _SDA_BASE. This is what we use for the small common section. This
1304 approach is copied from elf32-mips.c. */
1305 static asection m32r_elf_scom_section;
1306 static asymbol m32r_elf_scom_symbol;
1307 static asymbol *m32r_elf_scom_symbol_ptr;
1308
1309 /* Handle the special M32R section numbers that a symbol may use. */
1310
1311 static void
1312 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1313 {
1314 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1315
1316 switch (elfsym->internal_elf_sym.st_shndx)
1317 {
1318 case SHN_M32R_SCOMMON:
1319 if (m32r_elf_scom_section.name == NULL)
1320 {
1321 /* Initialize the small common section. */
1322 m32r_elf_scom_section.name = ".scommon";
1323 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1324 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1325 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1326 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1327 m32r_elf_scom_symbol.name = ".scommon";
1328 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1329 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1330 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1331 }
1332 asym->section = &m32r_elf_scom_section;
1333 asym->value = elfsym->internal_elf_sym.st_size;
1334 break;
1335 }
1336 }
1337
1338 /* Hook called by the linker routine which adds symbols from an object
1339 file. We must handle the special M32R section numbers here.
1340 We also keep watching for whether we need to create the sdata special
1341 linker sections. */
1342
1343 static bfd_boolean
1344 m32r_elf_add_symbol_hook (bfd *abfd,
1345 struct bfd_link_info *info,
1346 Elf_Internal_Sym *sym,
1347 const char **namep,
1348 flagword *flagsp ATTRIBUTE_UNUSED,
1349 asection **secp,
1350 bfd_vma *valp)
1351 {
1352 if (! info->relocatable
1353 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1354 && strcmp (*namep, "_SDA_BASE_") == 0
1355 && is_elf_hash_table (info->hash))
1356 {
1357 /* This is simpler than using _bfd_elf_create_linker_section
1358 (our needs are simpler than ppc's needs). Also
1359 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1360 section already exists a new one is created that follows it which
1361 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1362 struct elf_link_hash_entry *h;
1363 struct bfd_link_hash_entry *bh;
1364 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1365
1366 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1367 if (s == NULL)
1368 {
1369 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1370 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1371
1372 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1373 flags);
1374 if (s == NULL)
1375 return FALSE;
1376 bfd_set_section_alignment (abfd, s, 2);
1377 }
1378
1379 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1380 FALSE, FALSE, FALSE);
1381
1382 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1383 && !(_bfd_generic_link_add_one_symbol (info,
1384 abfd,
1385 "_SDA_BASE_",
1386 BSF_GLOBAL,
1387 s,
1388 (bfd_vma) 32768,
1389 NULL,
1390 FALSE,
1391 get_elf_backend_data (abfd)->collect,
1392 &bh)))
1393 return FALSE;
1394 h = (struct elf_link_hash_entry *) bh;
1395 h->type = STT_OBJECT;
1396 }
1397
1398 switch (sym->st_shndx)
1399 {
1400 case SHN_M32R_SCOMMON:
1401 *secp = bfd_make_section_old_way (abfd, ".scommon");
1402 (*secp)->flags |= SEC_IS_COMMON;
1403 *valp = sym->st_size;
1404 break;
1405 }
1406
1407 return TRUE;
1408 }
1409
1410 /* We have to figure out the SDA_BASE value, so that we can adjust the
1411 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1412 BFD. If we can't find it, we're stuck. We cache it in the ELF
1413 target data. We don't need to adjust the symbol value for an
1414 external symbol if we are producing relocatable output. */
1415
1416 static bfd_reloc_status_type
1417 m32r_elf_final_sda_base (bfd *output_bfd,
1418 struct bfd_link_info *info,
1419 const char **error_message,
1420 bfd_vma *psb)
1421 {
1422 if (elf_gp (output_bfd) == 0)
1423 {
1424 struct bfd_link_hash_entry *h;
1425
1426 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1427 if (h != NULL && h->type == bfd_link_hash_defined)
1428 elf_gp (output_bfd) = (h->u.def.value
1429 + h->u.def.section->output_section->vma
1430 + h->u.def.section->output_offset);
1431 else
1432 {
1433 /* Only get the error once. */
1434 *psb = elf_gp (output_bfd) = 4;
1435 *error_message =
1436 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1437 return bfd_reloc_dangerous;
1438 }
1439 }
1440 *psb = elf_gp (output_bfd);
1441 return bfd_reloc_ok;
1442 }
1443 \f
1444 /* Return size of a PLT entry. */
1445 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1446
1447 /* The m32r linker needs to keep track of the number of relocs that it
1448 decides to copy in check_relocs for each symbol. This is so that
1449 it can discard PC relative relocs if it doesn't need them when
1450 linking with -Bsymbolic. We store the information in a field
1451 extending the regular ELF linker hash table. */
1452
1453 /* This structure keeps track of the number of PC relative relocs we
1454 have copied for a given symbol. */
1455
1456 struct elf_m32r_pcrel_relocs_copied
1457 {
1458 /* Next section. */
1459 struct elf_m32r_pcrel_relocs_copied *next;
1460 /* A section in dynobj. */
1461 asection *section;
1462 /* Number of relocs copied in this section. */
1463 bfd_size_type count;
1464 };
1465
1466 /* The sh linker needs to keep track of the number of relocs that it
1467 decides to copy as dynamic relocs in check_relocs for each symbol.
1468 This is so that it can later discard them if they are found to be
1469 unnecessary. We store the information in a field extending the
1470 regular ELF linker hash table. */
1471
1472 struct elf_m32r_dyn_relocs
1473 {
1474 struct elf_m32r_dyn_relocs *next;
1475
1476 /* The input section of the reloc. */
1477 asection *sec;
1478
1479 /* Total number of relocs copied for the input section. */
1480 bfd_size_type count;
1481
1482 /* Number of pc-relative relocs copied for the input section. */
1483 bfd_size_type pc_count;
1484 };
1485
1486
1487 /* m32r ELF linker hash entry. */
1488
1489 struct elf_m32r_link_hash_entry
1490 {
1491 struct elf_link_hash_entry root;
1492
1493 /* Track dynamic relocs copied for this symbol. */
1494 struct elf_m32r_dyn_relocs *dyn_relocs;
1495 };
1496
1497 /* m32r ELF linker hash table. */
1498
1499 struct elf_m32r_link_hash_table
1500 {
1501 struct elf_link_hash_table root;
1502
1503 /* Short-cuts to get to dynamic linker sections. */
1504 asection *sgot;
1505 asection *sgotplt;
1506 asection *srelgot;
1507 asection *splt;
1508 asection *srelplt;
1509 asection *sdynbss;
1510 asection *srelbss;
1511
1512 /* Small local sym to section mapping cache. */
1513 struct sym_sec_cache sym_sec;
1514 };
1515
1516 /* Traverse an m32r ELF linker hash table. */
1517
1518 #define m32r_elf_link_hash_traverse(table, func, info) \
1519 (elf_link_hash_traverse \
1520 (&(table)->root, \
1521 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1522 (info)))
1523
1524 /* Get the m32r ELF linker hash table from a link_info structure. */
1525
1526
1527 #define m32r_elf_hash_table(p) \
1528 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1529
1530 /* Create an entry in an m32r ELF linker hash table. */
1531
1532 static struct bfd_hash_entry *
1533 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1534 struct bfd_hash_table *table,
1535 const char *string)
1536 {
1537 struct elf_m32r_link_hash_entry *ret =
1538 (struct elf_m32r_link_hash_entry *) entry;
1539
1540 /* Allocate the structure if it has not already been allocated by a
1541 subclass. */
1542 if (ret == NULL)
1543 ret = bfd_hash_allocate (table,
1544 sizeof (struct elf_m32r_link_hash_entry));
1545 if (ret == NULL)
1546 return NULL;
1547
1548 /* Call the allocation method of the superclass. */
1549 ret = ((struct elf_m32r_link_hash_entry *)
1550 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1551 table, string));
1552 if (ret != NULL)
1553 {
1554 struct elf_m32r_link_hash_entry *eh;
1555
1556 eh = (struct elf_m32r_link_hash_entry *) ret;
1557 eh->dyn_relocs = NULL;
1558 }
1559
1560 return (struct bfd_hash_entry *) ret;
1561 }
1562
1563 /* Create an m32r ELF linker hash table. */
1564
1565 static struct bfd_link_hash_table *
1566 m32r_elf_link_hash_table_create (bfd *abfd)
1567 {
1568 struct elf_m32r_link_hash_table *ret;
1569 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1570
1571 ret = bfd_malloc (amt);
1572 if (ret == NULL)
1573 return NULL;
1574
1575 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
1576 m32r_elf_link_hash_newfunc))
1577 {
1578 free (ret);
1579 return NULL;
1580 }
1581
1582 ret->sgot = NULL;
1583 ret->sgotplt = NULL;
1584 ret->srelgot = NULL;
1585 ret->splt = NULL;
1586 ret->srelplt = NULL;
1587 ret->sdynbss = NULL;
1588 ret->srelbss = NULL;
1589 ret->sym_sec.abfd = NULL;
1590
1591 return &ret->root.root;
1592 }
1593
1594 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1595 shortcuts to them in our hash table. */
1596
1597 static bfd_boolean
1598 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1599 {
1600 struct elf_m32r_link_hash_table *htab;
1601
1602 if (! _bfd_elf_create_got_section (dynobj, info))
1603 return FALSE;
1604
1605 htab = m32r_elf_hash_table (info);
1606 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1607 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1608 if (! htab->sgot || ! htab->sgotplt)
1609 abort ();
1610
1611 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1612 (SEC_ALLOC
1613 | SEC_LOAD
1614 | SEC_HAS_CONTENTS
1615 | SEC_IN_MEMORY
1616 | SEC_LINKER_CREATED
1617 | SEC_READONLY));
1618 if (htab->srelgot == NULL
1619 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1620 return FALSE;
1621
1622 return TRUE;
1623 }
1624
1625 /* Create dynamic sections when linking against a dynamic object. */
1626
1627 static bfd_boolean
1628 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1629 {
1630 struct elf_m32r_link_hash_table *htab;
1631 flagword flags, pltflags;
1632 asection *s;
1633 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1634 int ptralign = 2; /* 32bit */
1635
1636 htab = m32r_elf_hash_table (info);
1637
1638 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1639 .rel[a].bss sections. */
1640 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1641 | SEC_LINKER_CREATED);
1642
1643 pltflags = flags;
1644 pltflags |= SEC_CODE;
1645 if (bed->plt_not_loaded)
1646 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1647 if (bed->plt_readonly)
1648 pltflags |= SEC_READONLY;
1649
1650 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1651 htab->splt = s;
1652 if (s == NULL
1653 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1654 return FALSE;
1655
1656 if (bed->want_plt_sym)
1657 {
1658 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1659 .plt section. */
1660 struct bfd_link_hash_entry *bh = NULL;
1661 struct elf_link_hash_entry *h;
1662
1663 if (! (_bfd_generic_link_add_one_symbol
1664 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1665 (bfd_vma) 0, NULL, FALSE,
1666 get_elf_backend_data (abfd)->collect, &bh)))
1667 return FALSE;
1668 h = (struct elf_link_hash_entry *) bh;
1669 h->def_regular = 1;
1670 h->type = STT_OBJECT;
1671
1672 if (info->shared
1673 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1674 return FALSE;
1675 }
1676
1677 s = bfd_make_section_with_flags (abfd,
1678 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1679 flags | SEC_READONLY);
1680 htab->srelplt = s;
1681 if (s == NULL
1682 || ! bfd_set_section_alignment (abfd, s, ptralign))
1683 return FALSE;
1684
1685 if (htab->sgot == NULL
1686 && ! create_got_section (abfd, info))
1687 return FALSE;
1688
1689 {
1690 const char *secname;
1691 char *relname;
1692 flagword secflags;
1693 asection *sec;
1694
1695 for (sec = abfd->sections; sec; sec = sec->next)
1696 {
1697 secflags = bfd_get_section_flags (abfd, sec);
1698 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1699 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1700 continue;
1701 secname = bfd_get_section_name (abfd, sec);
1702 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1703 strcpy (relname, ".rela");
1704 strcat (relname, secname);
1705 if (bfd_get_section_by_name (abfd, secname))
1706 continue;
1707 s = bfd_make_section_with_flags (abfd, relname,
1708 flags | SEC_READONLY);
1709 if (s == NULL
1710 || ! bfd_set_section_alignment (abfd, s, ptralign))
1711 return FALSE;
1712 }
1713 }
1714
1715 if (bed->want_dynbss)
1716 {
1717 /* The .dynbss section is a place to put symbols which are defined
1718 by dynamic objects, are referenced by regular objects, and are
1719 not functions. We must allocate space for them in the process
1720 image and use a R_*_COPY reloc to tell the dynamic linker to
1721 initialize them at run time. The linker script puts the .dynbss
1722 section into the .bss section of the final image. */
1723 s = bfd_make_section_with_flags (abfd, ".dynbss",
1724 SEC_ALLOC | SEC_LINKER_CREATED);
1725 htab->sdynbss = s;
1726 if (s == NULL)
1727 return FALSE;
1728 /* The .rel[a].bss section holds copy relocs. This section is not
1729 normally needed. We need to create it here, though, so that the
1730 linker will map it to an output section. We can't just create it
1731 only if we need it, because we will not know whether we need it
1732 until we have seen all the input files, and the first time the
1733 main linker code calls BFD after examining all the input files
1734 (size_dynamic_sections) the input sections have already been
1735 mapped to the output sections. If the section turns out not to
1736 be needed, we can discard it later. We will never need this
1737 section when generating a shared object, since they do not use
1738 copy relocs. */
1739 if (! info->shared)
1740 {
1741 s = bfd_make_section_with_flags (abfd,
1742 (bed->default_use_rela_p
1743 ? ".rela.bss" : ".rel.bss"),
1744 flags | SEC_READONLY);
1745 htab->srelbss = s;
1746 if (s == NULL
1747 || ! bfd_set_section_alignment (abfd, s, ptralign))
1748 return FALSE;
1749 }
1750 }
1751
1752 return TRUE;
1753 }
1754
1755 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1756
1757 static void
1758 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1759 struct elf_link_hash_entry *dir,
1760 struct elf_link_hash_entry *ind)
1761 {
1762 struct elf_m32r_link_hash_entry * edir;
1763 struct elf_m32r_link_hash_entry * eind;
1764
1765 edir = (struct elf_m32r_link_hash_entry *) dir;
1766 eind = (struct elf_m32r_link_hash_entry *) ind;
1767
1768 if (eind->dyn_relocs != NULL)
1769 {
1770 if (edir->dyn_relocs != NULL)
1771 {
1772 struct elf_m32r_dyn_relocs **pp;
1773 struct elf_m32r_dyn_relocs *p;
1774
1775 /* Add reloc counts against the indirect sym to the direct sym
1776 list. Merge any entries against the same section. */
1777 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1778 {
1779 struct elf_m32r_dyn_relocs *q;
1780
1781 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1782 if (q->sec == p->sec)
1783 {
1784 q->pc_count += p->pc_count;
1785 q->count += p->count;
1786 *pp = p->next;
1787 break;
1788 }
1789 if (q == NULL)
1790 pp = &p->next;
1791 }
1792 *pp = edir->dyn_relocs;
1793 }
1794
1795 edir->dyn_relocs = eind->dyn_relocs;
1796 eind->dyn_relocs = NULL;
1797 }
1798
1799 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1800 }
1801
1802 \f
1803 /* Adjust a symbol defined by a dynamic object and referenced by a
1804 regular object. The current definition is in some section of the
1805 dynamic object, but we're not including those sections. We have to
1806 change the definition to something the rest of the link can
1807 understand. */
1808
1809 static bfd_boolean
1810 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1811 struct elf_link_hash_entry *h)
1812 {
1813 struct elf_m32r_link_hash_table *htab;
1814 struct elf_m32r_link_hash_entry *eh;
1815 struct elf_m32r_dyn_relocs *p;
1816 bfd *dynobj;
1817 asection *s;
1818 unsigned int power_of_two;
1819
1820 #ifdef DEBUG_PIC
1821 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1822 #endif
1823
1824 dynobj = elf_hash_table (info)->dynobj;
1825
1826 /* Make sure we know what is going on here. */
1827 BFD_ASSERT (dynobj != NULL
1828 && (h->needs_plt
1829 || h->u.weakdef != NULL
1830 || (h->def_dynamic
1831 && h->ref_regular
1832 && !h->def_regular)));
1833
1834 /* If this is a function, put it in the procedure linkage table. We
1835 will fill in the contents of the procedure linkage table later,
1836 when we know the address of the .got section. */
1837 if (h->type == STT_FUNC
1838 || h->needs_plt)
1839 {
1840 if (! info->shared
1841 && !h->def_dynamic
1842 && !h->ref_dynamic
1843 && h->root.type != bfd_link_hash_undefweak
1844 && h->root.type != bfd_link_hash_undefined)
1845 {
1846 /* This case can occur if we saw a PLT reloc in an input
1847 file, but the symbol was never referred to by a dynamic
1848 object. In such a case, we don't actually need to build
1849 a procedure linkage table, and we can just do a PCREL
1850 reloc instead. */
1851 h->plt.offset = (bfd_vma) -1;
1852 h->needs_plt = 0;
1853 }
1854
1855 return TRUE;
1856 }
1857 else
1858 h->plt.offset = (bfd_vma) -1;
1859
1860 /* If this is a weak symbol, and there is a real definition, the
1861 processor independent code will have arranged for us to see the
1862 real definition first, and we can just use the same value. */
1863 if (h->u.weakdef != NULL)
1864 {
1865 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1866 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1867 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1868 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1869 return TRUE;
1870 }
1871
1872 /* This is a reference to a symbol defined by a dynamic object which
1873 is not a function. */
1874
1875 /* If we are creating a shared library, we must presume that the
1876 only references to the symbol are via the global offset table.
1877 For such cases we need not do anything here; the relocations will
1878 be handled correctly by relocate_section. */
1879 if (info->shared)
1880 return TRUE;
1881
1882 /* If there are no references to this symbol that do not use the
1883 GOT, we don't need to generate a copy reloc. */
1884 if (!h->non_got_ref)
1885 return TRUE;
1886
1887 /* If -z nocopyreloc was given, we won't generate them either. */
1888 if (info->nocopyreloc)
1889 {
1890 h->non_got_ref = 0;
1891 return TRUE;
1892 }
1893
1894 eh = (struct elf_m32r_link_hash_entry *) h;
1895 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1896 {
1897 s = p->sec->output_section;
1898 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1899 break;
1900 }
1901
1902 /* If we didn't find any dynamic relocs in sections which needs the
1903 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1904 the copy reloc. */
1905 if (p == NULL)
1906 {
1907 h->non_got_ref = 0;
1908 return TRUE;
1909 }
1910
1911 if (h->size == 0)
1912 {
1913 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1914 h->root.root.string);
1915 return TRUE;
1916 }
1917
1918 /* We must allocate the symbol in our .dynbss section, which will
1919 become part of the .bss section of the executable. There will be
1920 an entry for this symbol in the .dynsym section. The dynamic
1921 object will contain position independent code, so all references
1922 from the dynamic object to this symbol will go through the global
1923 offset table. The dynamic linker will use the .dynsym entry to
1924 determine the address it must put in the global offset table, so
1925 both the dynamic object and the regular object will refer to the
1926 same memory location for the variable. */
1927
1928 htab = m32r_elf_hash_table (info);
1929 s = htab->sdynbss;
1930 BFD_ASSERT (s != NULL);
1931
1932 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1933 to copy the initial value out of the dynamic object and into the
1934 runtime process image. We need to remember the offset into the
1935 .rela.bss section we are going to use. */
1936 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1937 {
1938 asection *srel;
1939
1940 srel = htab->srelbss;
1941 BFD_ASSERT (srel != NULL);
1942 srel->size += sizeof (Elf32_External_Rela);
1943 h->needs_copy = 1;
1944 }
1945
1946 /* We need to figure out the alignment required for this symbol. I
1947 have no idea how ELF linkers handle this. */
1948 power_of_two = bfd_log2 (h->size);
1949 if (power_of_two > 3)
1950 power_of_two = 3;
1951
1952 /* Apply the required alignment. */
1953 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1954 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1955 {
1956 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1957 return FALSE;
1958 }
1959
1960 /* Define the symbol as being at this point in the section. */
1961 h->root.u.def.section = s;
1962 h->root.u.def.value = s->size;
1963
1964 /* Increment the section size to make room for the symbol. */
1965 s->size += h->size;
1966
1967 return TRUE;
1968 }
1969
1970 /* Allocate space in .plt, .got and associated reloc sections for
1971 dynamic relocs. */
1972
1973 static bfd_boolean
1974 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1975 {
1976 struct bfd_link_info *info;
1977 struct elf_m32r_link_hash_table *htab;
1978 struct elf_m32r_link_hash_entry *eh;
1979 struct elf_m32r_dyn_relocs *p;
1980
1981 if (h->root.type == bfd_link_hash_indirect)
1982 return TRUE;
1983
1984 if (h->root.type == bfd_link_hash_warning)
1985 /* When warning symbols are created, they **replace** the "real"
1986 entry in the hash table, thus we never get to see the real
1987 symbol in a hash traversal. So look at it now. */
1988 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1989
1990 info = (struct bfd_link_info *) inf;
1991 htab = m32r_elf_hash_table (info);
1992
1993 eh = (struct elf_m32r_link_hash_entry *) h;
1994
1995 if (htab->root.dynamic_sections_created
1996 && h->plt.refcount > 0)
1997 {
1998 /* Make sure this symbol is output as a dynamic symbol.
1999 Undefined weak syms won't yet be marked as dynamic. */
2000 if (h->dynindx == -1
2001 && !h->forced_local)
2002 {
2003 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2004 return FALSE;
2005 }
2006
2007 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2008 {
2009 asection *s = htab->splt;
2010
2011 /* If this is the first .plt entry, make room for the special
2012 first entry. */
2013 if (s->size == 0)
2014 s->size += PLT_ENTRY_SIZE;
2015
2016 h->plt.offset = s->size;
2017
2018 /* If this symbol is not defined in a regular file, and we are
2019 not generating a shared library, then set the symbol to this
2020 location in the .plt. This is required to make function
2021 pointers compare as equal between the normal executable and
2022 the shared library. */
2023 if (! info->shared
2024 && !h->def_regular)
2025 {
2026 h->root.u.def.section = s;
2027 h->root.u.def.value = h->plt.offset;
2028 }
2029
2030 /* Make room for this entry. */
2031 s->size += PLT_ENTRY_SIZE;
2032
2033 /* We also need to make an entry in the .got.plt section, which
2034 will be placed in the .got section by the linker script. */
2035 htab->sgotplt->size += 4;
2036
2037 /* We also need to make an entry in the .rel.plt section. */
2038 htab->srelplt->size += sizeof (Elf32_External_Rela);
2039 }
2040 else
2041 {
2042 h->plt.offset = (bfd_vma) -1;
2043 h->needs_plt = 0;
2044 }
2045 }
2046 else
2047 {
2048 h->plt.offset = (bfd_vma) -1;
2049 h->needs_plt = 0;
2050 }
2051
2052 if (h->got.refcount > 0)
2053 {
2054 asection *s;
2055 bfd_boolean dyn;
2056
2057 /* Make sure this symbol is output as a dynamic symbol.
2058 Undefined weak syms won't yet be marked as dynamic. */
2059 if (h->dynindx == -1
2060 && !h->forced_local)
2061 {
2062 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2063 return FALSE;
2064 }
2065
2066 s = htab->sgot;
2067
2068 h->got.offset = s->size;
2069 s->size += 4;
2070 dyn = htab->root.dynamic_sections_created;
2071 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2072 htab->srelgot->size += sizeof (Elf32_External_Rela);
2073 }
2074 else
2075 h->got.offset = (bfd_vma) -1;
2076
2077 if (eh->dyn_relocs == NULL)
2078 return TRUE;
2079
2080 /* In the shared -Bsymbolic case, discard space allocated for
2081 dynamic pc-relative relocs against symbols which turn out to be
2082 defined in regular objects. For the normal shared case, discard
2083 space for pc-relative relocs that have become local due to symbol
2084 visibility changes. */
2085
2086 if (info->shared)
2087 {
2088 if (h->def_regular
2089 && (h->forced_local
2090 || info->symbolic))
2091 {
2092 struct elf_m32r_dyn_relocs **pp;
2093
2094 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2095 {
2096 p->count -= p->pc_count;
2097 p->pc_count = 0;
2098 if (p->count == 0)
2099 *pp = p->next;
2100 else
2101 pp = &p->next;
2102 }
2103 }
2104 }
2105 else
2106 {
2107 /* For the non-shared case, discard space for relocs against
2108 symbols which turn out to need copy relocs or are not
2109 dynamic. */
2110
2111 if (!h->non_got_ref
2112 && ((h->def_dynamic
2113 && !h->def_regular)
2114 || (htab->root.dynamic_sections_created
2115 && (h->root.type == bfd_link_hash_undefweak
2116 || h->root.type == bfd_link_hash_undefined))))
2117 {
2118 /* Make sure this symbol is output as a dynamic symbol.
2119 Undefined weak syms won't yet be marked as dynamic. */
2120 if (h->dynindx == -1
2121 && !h->forced_local)
2122 {
2123 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2124 return FALSE;
2125 }
2126
2127 /* If that succeeded, we know we'll be keeping all the
2128 relocs. */
2129 if (h->dynindx != -1)
2130 goto keep;
2131 }
2132
2133 eh->dyn_relocs = NULL;
2134
2135 keep: ;
2136 }
2137
2138 /* Finally, allocate space. */
2139 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2140 {
2141 asection *sreloc = elf_section_data (p->sec)->sreloc;
2142 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2143 }
2144
2145 return TRUE;
2146 }
2147
2148 /* Find any dynamic relocs that apply to read-only sections. */
2149
2150 static bfd_boolean
2151 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2152 {
2153 struct elf_m32r_link_hash_entry *eh;
2154 struct elf_m32r_dyn_relocs *p;
2155
2156 if (h->root.type == bfd_link_hash_warning)
2157 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2158
2159 eh = (struct elf_m32r_link_hash_entry *) h;
2160 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2161 {
2162 asection *s = p->sec->output_section;
2163
2164 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2165 {
2166 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2167
2168 info->flags |= DF_TEXTREL;
2169
2170 /* Not an error, just cut short the traversal. */
2171 return FALSE;
2172 }
2173 }
2174 return TRUE;
2175 }
2176
2177 /* Set the sizes of the dynamic sections. */
2178
2179 static bfd_boolean
2180 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2181 struct bfd_link_info *info)
2182 {
2183 struct elf_m32r_link_hash_table *htab;
2184 bfd *dynobj;
2185 asection *s;
2186 bfd_boolean relocs;
2187 bfd *ibfd;
2188
2189 #ifdef DEBUG_PIC
2190 printf ("m32r_elf_size_dynamic_sections()\n");
2191 #endif
2192
2193 htab = m32r_elf_hash_table (info);
2194 dynobj = htab->root.dynobj;
2195 BFD_ASSERT (dynobj != NULL);
2196
2197 if (htab->root.dynamic_sections_created)
2198 {
2199 /* Set the contents of the .interp section to the interpreter. */
2200 if (info->executable)
2201 {
2202 s = bfd_get_section_by_name (dynobj, ".interp");
2203 BFD_ASSERT (s != NULL);
2204 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2205 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2206 }
2207 }
2208
2209 /* Set up .got offsets for local syms, and space for local dynamic
2210 relocs. */
2211 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2212 {
2213 bfd_signed_vma *local_got;
2214 bfd_signed_vma *end_local_got;
2215 bfd_size_type locsymcount;
2216 Elf_Internal_Shdr *symtab_hdr;
2217 asection *srel;
2218
2219 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2220 continue;
2221
2222 for (s = ibfd->sections; s != NULL; s = s->next)
2223 {
2224 struct elf_m32r_dyn_relocs *p;
2225
2226 for (p = ((struct elf_m32r_dyn_relocs *)
2227 elf_section_data (s)->local_dynrel);
2228 p != NULL;
2229 p = p->next)
2230 {
2231 if (! bfd_is_abs_section (p->sec)
2232 && bfd_is_abs_section (p->sec->output_section))
2233 {
2234 /* Input section has been discarded, either because
2235 it is a copy of a linkonce section or due to
2236 linker script /DISCARD/, so we'll be discarding
2237 the relocs too. */
2238 }
2239 else if (p->count != 0)
2240 {
2241 srel = elf_section_data (p->sec)->sreloc;
2242 srel->size += p->count * sizeof (Elf32_External_Rela);
2243 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2244 info->flags |= DF_TEXTREL;
2245 }
2246 }
2247 }
2248
2249 local_got = elf_local_got_refcounts (ibfd);
2250 if (!local_got)
2251 continue;
2252
2253 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2254 locsymcount = symtab_hdr->sh_info;
2255 end_local_got = local_got + locsymcount;
2256 s = htab->sgot;
2257 srel = htab->srelgot;
2258 for (; local_got < end_local_got; ++local_got)
2259 {
2260 if (*local_got > 0)
2261 {
2262 *local_got = s->size;
2263 s->size += 4;
2264 if (info->shared)
2265 srel->size += sizeof (Elf32_External_Rela);
2266 }
2267 else
2268 *local_got = (bfd_vma) -1;
2269 }
2270 }
2271
2272 /* Allocate global sym .plt and .got entries, and space for global
2273 sym dynamic relocs. */
2274 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2275
2276 /* We now have determined the sizes of the various dynamic sections.
2277 Allocate memory for them. */
2278 relocs = FALSE;
2279 for (s = dynobj->sections; s != NULL; s = s->next)
2280 {
2281 if ((s->flags & SEC_LINKER_CREATED) == 0)
2282 continue;
2283
2284 if (s == htab->splt
2285 || s == htab->sgot
2286 || s == htab->sgotplt
2287 || s == htab->sdynbss)
2288 {
2289 /* Strip this section if we don't need it; see the
2290 comment below. */
2291 }
2292 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2293 {
2294 if (s->size != 0 && s != htab->srelplt)
2295 relocs = TRUE;
2296
2297 /* We use the reloc_count field as a counter if we need
2298 to copy relocs into the output file. */
2299 s->reloc_count = 0;
2300 }
2301 else
2302 /* It's not one of our sections, so don't allocate space. */
2303 continue;
2304
2305 if (s->size == 0)
2306 {
2307 /* If we don't need this section, strip it from the
2308 output file. This is mostly to handle .rela.bss and
2309 .rela.plt. We must create both sections in
2310 create_dynamic_sections, because they must be created
2311 before the linker maps input sections to output
2312 sections. The linker does that before
2313 adjust_dynamic_symbol is called, and it is that
2314 function which decides whether anything needs to go
2315 into these sections. */
2316 s->flags |= SEC_EXCLUDE;
2317 continue;
2318 }
2319
2320 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2321 continue;
2322
2323 /* Allocate memory for the section contents. We use bfd_zalloc
2324 here in case unused entries are not reclaimed before the
2325 section's contents are written out. This should not happen,
2326 but this way if it does, we get a R_M32R_NONE reloc instead
2327 of garbage. */
2328 s->contents = bfd_zalloc (dynobj, s->size);
2329 if (s->contents == NULL)
2330 return FALSE;
2331 }
2332
2333 if (htab->root.dynamic_sections_created)
2334 {
2335 /* Add some entries to the .dynamic section. We fill in the
2336 values later, in m32r_elf_finish_dynamic_sections, but we
2337 must add the entries now so that we get the correct size for
2338 the .dynamic section. The DT_DEBUG entry is filled in by the
2339 dynamic linker and used by the debugger. */
2340 #define add_dynamic_entry(TAG, VAL) \
2341 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2342
2343 if (info->executable)
2344 {
2345 if (! add_dynamic_entry (DT_DEBUG, 0))
2346 return FALSE;
2347 }
2348
2349 if (htab->splt->size != 0)
2350 {
2351 if (! add_dynamic_entry (DT_PLTGOT, 0)
2352 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2353 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2354 || ! add_dynamic_entry (DT_JMPREL, 0))
2355 return FALSE;
2356 }
2357
2358 if (relocs)
2359 {
2360 if (! add_dynamic_entry (DT_RELA, 0)
2361 || ! add_dynamic_entry (DT_RELASZ, 0)
2362 || ! add_dynamic_entry (DT_RELAENT,
2363 sizeof (Elf32_External_Rela)))
2364 return FALSE;
2365
2366 /* If any dynamic relocs apply to a read-only section,
2367 then we need a DT_TEXTREL entry. */
2368 if ((info->flags & DF_TEXTREL) == 0)
2369 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2370 info);
2371
2372 if ((info->flags & DF_TEXTREL) != 0)
2373 {
2374 if (! add_dynamic_entry (DT_TEXTREL, 0))
2375 return FALSE;
2376 }
2377 }
2378 }
2379 #undef add_dynamic_entry
2380
2381 return TRUE;
2382 }
2383
2384 /* Relocate an M32R/D ELF section.
2385 There is some attempt to make this function usable for many architectures,
2386 both for RELA and REL type relocs, if only to serve as a learning tool.
2387
2388 The RELOCATE_SECTION function is called by the new ELF backend linker
2389 to handle the relocations for a section.
2390
2391 The relocs are always passed as Rela structures; if the section
2392 actually uses Rel structures, the r_addend field will always be
2393 zero.
2394
2395 This function is responsible for adjust the section contents as
2396 necessary, and (if using Rela relocs and generating a
2397 relocatable output file) adjusting the reloc addend as
2398 necessary.
2399
2400 This function does not have to worry about setting the reloc
2401 address or the reloc symbol index.
2402
2403 LOCAL_SYMS is a pointer to the swapped in local symbols.
2404
2405 LOCAL_SECTIONS is an array giving the section in the input file
2406 corresponding to the st_shndx field of each local symbol.
2407
2408 The global hash table entry for the global symbols can be found
2409 via elf_sym_hashes (input_bfd).
2410
2411 When generating relocatable output, this function must handle
2412 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2413 going to be the section symbol corresponding to the output
2414 section, which means that the addend must be adjusted
2415 accordingly. */
2416
2417 static bfd_boolean
2418 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2419 struct bfd_link_info *info,
2420 bfd *input_bfd,
2421 asection *input_section,
2422 bfd_byte *contents,
2423 Elf_Internal_Rela *relocs,
2424 Elf_Internal_Sym *local_syms,
2425 asection **local_sections)
2426 {
2427 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2428 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2429 Elf_Internal_Rela *rel, *relend;
2430 /* Assume success. */
2431 bfd_boolean ret = TRUE;
2432
2433 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2434 bfd *dynobj;
2435 bfd_vma *local_got_offsets;
2436 asection *sgot, *splt, *sreloc;
2437 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2438
2439 dynobj = htab->root.dynobj;
2440 local_got_offsets = elf_local_got_offsets (input_bfd);
2441
2442 sgot = htab->sgot;
2443 splt = htab->splt;
2444 sreloc = NULL;
2445
2446 rel = relocs;
2447 relend = relocs + input_section->reloc_count;
2448 for (; rel < relend; rel++)
2449 {
2450 int r_type;
2451 reloc_howto_type *howto;
2452 unsigned long r_symndx;
2453 struct elf_link_hash_entry *h;
2454 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2455 ensure it's zero (we use REL relocs, not RELA). Therefore this
2456 should be assigning zero to `addend', but for clarity we use
2457 `r_addend'. */
2458 bfd_vma addend = rel->r_addend;
2459 bfd_vma offset = rel->r_offset;
2460 Elf_Internal_Sym *sym;
2461 asection *sec;
2462 const char *sym_name;
2463 bfd_reloc_status_type r;
2464 const char *errmsg = NULL;
2465 bfd_boolean use_rel = FALSE;
2466
2467 h = NULL;
2468 r_type = ELF32_R_TYPE (rel->r_info);
2469 if (r_type < 0 || r_type >= (int) R_M32R_max)
2470 {
2471 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2472 input_bfd,
2473 (int) r_type);
2474 bfd_set_error (bfd_error_bad_value);
2475 ret = FALSE;
2476 continue;
2477 }
2478
2479 if ( r_type == R_M32R_GNU_VTENTRY
2480 || r_type == R_M32R_GNU_VTINHERIT
2481 || r_type == R_M32R_NONE
2482 || r_type == R_M32R_RELA_GNU_VTENTRY
2483 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2484 continue;
2485
2486 if (r_type <= R_M32R_GNU_VTENTRY)
2487 use_rel = TRUE;
2488
2489 howto = m32r_elf_howto_table + r_type;
2490 r_symndx = ELF32_R_SYM (rel->r_info);
2491
2492 if (info->relocatable && use_rel)
2493 {
2494 /* This is a relocatable link. We don't have to change
2495 anything, unless the reloc is against a section symbol,
2496 in which case we have to adjust according to where the
2497 section symbol winds up in the output section. */
2498 sec = NULL;
2499 if (r_symndx >= symtab_hdr->sh_info)
2500 /* External symbol. */
2501 continue;
2502
2503 /* Local symbol. */
2504 sym = local_syms + r_symndx;
2505 sym_name = "<local symbol>";
2506 /* STT_SECTION: symbol is associated with a section. */
2507 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2508 /* Symbol isn't associated with a section. Nothing to do. */
2509 continue;
2510
2511 sec = local_sections[r_symndx];
2512 addend += sec->output_offset + sym->st_value;
2513
2514 /* If partial_inplace, we need to store any additional addend
2515 back in the section. */
2516 if (! howto->partial_inplace)
2517 continue;
2518 /* ??? Here is a nice place to call a special_function
2519 like handler. */
2520 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2521 r = _bfd_relocate_contents (howto, input_bfd,
2522 addend, contents + offset);
2523 else
2524 {
2525 Elf_Internal_Rela *lorel;
2526
2527 /* We allow an arbitrary number of HI16 relocs before the
2528 LO16 reloc. This permits gcc to emit the HI and LO relocs
2529 itself. */
2530 for (lorel = rel + 1;
2531 (lorel < relend
2532 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2533 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2534 lorel++)
2535 continue;
2536 if (lorel < relend
2537 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2538 {
2539 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2540 contents, addend);
2541 r = bfd_reloc_ok;
2542 }
2543 else
2544 r = _bfd_relocate_contents (howto, input_bfd,
2545 addend, contents + offset);
2546 }
2547 }
2548 else
2549 {
2550 bfd_vma relocation;
2551
2552 /* This is a final link. */
2553 sym = NULL;
2554 sec = NULL;
2555 h = NULL;
2556
2557 if (r_symndx < symtab_hdr->sh_info)
2558 {
2559 /* Local symbol. */
2560 sym = local_syms + r_symndx;
2561 sec = local_sections[r_symndx];
2562 sym_name = "<local symbol>";
2563
2564 if (!use_rel)
2565 {
2566 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2567 addend = rel->r_addend;
2568
2569 if (info->relocatable)
2570 {
2571 /* This is a relocatable link. We don't have to change
2572 anything, unless the reloc is against a section symbol,
2573 in which case we have to adjust according to where the
2574 section symbol winds up in the output section. */
2575 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2576 rel->r_addend += sec->output_offset + sym->st_value;
2577
2578 continue;
2579 }
2580 }
2581 else
2582 {
2583 relocation = (sec->output_section->vma
2584 + sec->output_offset
2585 + sym->st_value);
2586 }
2587 }
2588 else
2589 {
2590 /* External symbol. */
2591 if (info->relocatable && !use_rel)
2592 continue;
2593
2594 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2595 while (h->root.type == bfd_link_hash_indirect
2596 || h->root.type == bfd_link_hash_warning)
2597 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2598 sym_name = h->root.root.string;
2599
2600 if (h->root.type == bfd_link_hash_defined
2601 || h->root.type == bfd_link_hash_defweak)
2602 {
2603 bfd_boolean dyn;
2604 sec = h->root.u.def.section;
2605
2606 dyn = htab->root.dynamic_sections_created;
2607 sec = h->root.u.def.section;
2608 if (r_type == R_M32R_GOTPC24
2609 || (r_type == R_M32R_GOTPC_HI_ULO
2610 || r_type == R_M32R_GOTPC_HI_SLO
2611 || r_type == R_M32R_GOTPC_LO)
2612 || (r_type == R_M32R_26_PLTREL
2613 && h->plt.offset != (bfd_vma) -1)
2614 || ((r_type == R_M32R_GOT24
2615 || r_type == R_M32R_GOT16_HI_ULO
2616 || r_type == R_M32R_GOT16_HI_SLO
2617 || r_type == R_M32R_GOT16_LO)
2618 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2619 info->shared, h)
2620 && (! info->shared
2621 || (! info->symbolic && h->dynindx != -1)
2622 || !h->def_regular))
2623 || (info->shared
2624 && ((! info->symbolic && h->dynindx != -1)
2625 || !h->def_regular)
2626 && (((r_type == R_M32R_16_RELA
2627 || r_type == R_M32R_32_RELA
2628 || r_type == R_M32R_24_RELA
2629 || r_type == R_M32R_HI16_ULO_RELA
2630 || r_type == R_M32R_HI16_SLO_RELA
2631 || r_type == R_M32R_LO16_RELA)
2632 && !h->forced_local)
2633 || r_type == R_M32R_REL32
2634 || r_type == R_M32R_10_PCREL_RELA
2635 || r_type == R_M32R_18_PCREL_RELA
2636 || r_type == R_M32R_26_PCREL_RELA)
2637 && ((input_section->flags & SEC_ALLOC) != 0
2638 /* DWARF will emit R_M32R_16(24,32) relocations
2639 in its sections against symbols defined
2640 externally in shared libraries. We can't do
2641 anything with them here. */
2642 || ((input_section->flags & SEC_DEBUGGING) != 0
2643 && h->def_dynamic))))
2644 {
2645 /* In these cases, we don't need the relocation
2646 value. We check specially because in some
2647 obscure cases sec->output_section will be NULL. */
2648 relocation = 0;
2649 }
2650 else if (sec->output_section == NULL)
2651 {
2652 (*_bfd_error_handler)
2653 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2654 input_bfd,
2655 input_section,
2656 (long) rel->r_offset,
2657 howto->name,
2658 h->root.root.string);
2659
2660 relocation = 0;
2661 }
2662 else
2663 relocation = (h->root.u.def.value
2664 + sec->output_section->vma
2665 + sec->output_offset);
2666 }
2667 else if (h->root.type == bfd_link_hash_undefweak)
2668 relocation = 0;
2669 else if (info->unresolved_syms_in_objects == RM_IGNORE
2670 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2671 relocation = 0;
2672 else
2673 {
2674 if (! ((*info->callbacks->undefined_symbol)
2675 (info, h->root.root.string, input_bfd,
2676 input_section, offset,
2677 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2678 || ELF_ST_VISIBILITY (h->other)))))
2679 return FALSE;
2680 relocation = 0;
2681 }
2682 }
2683
2684 /* Sanity check the address. */
2685 if (offset > high_address)
2686 {
2687 r = bfd_reloc_outofrange;
2688 goto check_reloc;
2689 }
2690
2691 switch ((int) r_type)
2692 {
2693 case R_M32R_GOTOFF:
2694 /* Relocation is relative to the start of the global offset
2695 table (for ld24 rx, #uimm24). eg access at label+addend
2696
2697 ld24 rx. #label@GOTOFF + addend
2698 sub rx, r12. */
2699
2700 BFD_ASSERT (sgot != NULL);
2701
2702 relocation = -(relocation - sgot->output_section->vma);
2703 rel->r_addend = -rel->r_addend;
2704 break;
2705
2706 case R_M32R_GOTOFF_HI_ULO:
2707 case R_M32R_GOTOFF_HI_SLO:
2708 case R_M32R_GOTOFF_LO:
2709 BFD_ASSERT (sgot != NULL);
2710
2711 relocation -= sgot->output_section->vma;
2712
2713 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2714 && ((relocation + rel->r_addend) & 0x8000))
2715 rel->r_addend += 0x10000;
2716 break;
2717
2718 case R_M32R_GOTPC24:
2719 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2720 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2721 */
2722 relocation = sgot->output_section->vma;
2723 break;
2724
2725 case R_M32R_GOTPC_HI_ULO:
2726 case R_M32R_GOTPC_HI_SLO:
2727 case R_M32R_GOTPC_LO:
2728 {
2729 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2730 bl .+4
2731 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2732 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2733 or
2734 bl .+4
2735 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2736 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2737 */
2738 relocation = sgot->output_section->vma;
2739 relocation -= (input_section->output_section->vma
2740 + input_section->output_offset
2741 + rel->r_offset);
2742 if ((r_type == R_M32R_GOTPC_HI_SLO)
2743 && ((relocation + rel->r_addend) & 0x8000))
2744 rel->r_addend += 0x10000;
2745
2746 break;
2747 }
2748 case R_M32R_GOT16_HI_ULO:
2749 case R_M32R_GOT16_HI_SLO:
2750 case R_M32R_GOT16_LO:
2751 /* Fall through. */
2752 case R_M32R_GOT24:
2753 /* Relocation is to the entry for this symbol in the global
2754 offset table. */
2755 BFD_ASSERT (sgot != NULL);
2756
2757 if (h != NULL)
2758 {
2759 bfd_boolean dyn;
2760 bfd_vma off;
2761
2762 off = h->got.offset;
2763 BFD_ASSERT (off != (bfd_vma) -1);
2764
2765 dyn = htab->root.dynamic_sections_created;
2766 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2767 || (info->shared
2768 && (info->symbolic
2769 || h->dynindx == -1
2770 || h->forced_local)
2771 && h->def_regular))
2772 {
2773 /* This is actually a static link, or it is a
2774 -Bsymbolic link and the symbol is defined
2775 locally, or the symbol was forced to be local
2776 because of a version file. We must initialize
2777 this entry in the global offset table. Since the
2778 offset must always be a multiple of 4, we use the
2779 least significant bit to record whether we have
2780 initialized it already.
2781
2782 When doing a dynamic link, we create a .rela.got
2783 relocation entry to initialize the value. This
2784 is done in the finish_dynamic_symbol routine. */
2785 if ((off & 1) != 0)
2786 off &= ~1;
2787 else
2788 {
2789 bfd_put_32 (output_bfd, relocation,
2790 sgot->contents + off);
2791 h->got.offset |= 1;
2792 }
2793 }
2794
2795 relocation = sgot->output_offset + off;
2796 }
2797 else
2798 {
2799 bfd_vma off;
2800 bfd_byte *loc;
2801
2802 BFD_ASSERT (local_got_offsets != NULL
2803 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2804
2805 off = local_got_offsets[r_symndx];
2806
2807 /* The offset must always be a multiple of 4. We use
2808 the least significant bit to record whether we have
2809 already processed this entry. */
2810 if ((off & 1) != 0)
2811 off &= ~1;
2812 else
2813 {
2814 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2815
2816 if (info->shared)
2817 {
2818 asection *srelgot;
2819 Elf_Internal_Rela outrel;
2820
2821 /* We need to generate a R_M32R_RELATIVE reloc
2822 for the dynamic linker. */
2823 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2824 BFD_ASSERT (srelgot != NULL);
2825
2826 outrel.r_offset = (sgot->output_section->vma
2827 + sgot->output_offset
2828 + off);
2829 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2830 outrel.r_addend = relocation;
2831 loc = srelgot->contents;
2832 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2833 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2834 ++srelgot->reloc_count;
2835 }
2836
2837 local_got_offsets[r_symndx] |= 1;
2838 }
2839
2840 relocation = sgot->output_offset + off;
2841 }
2842 if ((r_type == R_M32R_GOT16_HI_SLO)
2843 && ((relocation + rel->r_addend) & 0x8000))
2844 rel->r_addend += 0x10000;
2845
2846 break;
2847
2848 case R_M32R_26_PLTREL:
2849 /* Relocation is to the entry for this symbol in the
2850 procedure linkage table. */
2851
2852 /* The native assembler will generate a 26_PLTREL reloc
2853 for a local symbol if you assemble a call from one
2854 section to another when using -K pic. */
2855 if (h == NULL)
2856 break;
2857
2858 if (h->forced_local)
2859 break;
2860
2861 if (h->plt.offset == (bfd_vma) -1)
2862 /* We didn't make a PLT entry for this symbol. This
2863 happens when statically linking PIC code, or when
2864 using -Bsymbolic. */
2865 break;
2866
2867 relocation = (splt->output_section->vma
2868 + splt->output_offset
2869 + h->plt.offset);
2870 break;
2871
2872 case R_M32R_HI16_SLO_RELA:
2873 if ((relocation + rel->r_addend) & 0x8000)
2874 rel->r_addend += 0x10000;
2875 /* Fall through. */
2876
2877 case R_M32R_16_RELA:
2878 case R_M32R_24_RELA:
2879 case R_M32R_32_RELA:
2880 case R_M32R_REL32:
2881 case R_M32R_10_PCREL_RELA:
2882 case R_M32R_18_PCREL_RELA:
2883 case R_M32R_26_PCREL_RELA:
2884 case R_M32R_HI16_ULO_RELA:
2885 case R_M32R_LO16_RELA:
2886 if (info->shared
2887 && r_symndx != 0
2888 && (input_section->flags & SEC_ALLOC) != 0
2889 && (( r_type != R_M32R_10_PCREL_RELA
2890 && r_type != R_M32R_18_PCREL_RELA
2891 && r_type != R_M32R_26_PCREL_RELA
2892 && r_type != R_M32R_REL32)
2893 || (h != NULL
2894 && h->dynindx != -1
2895 && (! info->symbolic
2896 || !h->def_regular))))
2897 {
2898 Elf_Internal_Rela outrel;
2899 bfd_boolean skip, relocate;
2900 bfd_byte *loc;
2901
2902 /* When generating a shared object, these relocations
2903 are copied into the output file to be resolved at run
2904 time. */
2905 if (sreloc == NULL)
2906 {
2907 const char *name;
2908
2909 name = (bfd_elf_string_from_elf_section
2910 (input_bfd,
2911 elf_elfheader (input_bfd)->e_shstrndx,
2912 elf_section_data (input_section)->rel_hdr.sh_name));
2913 if (name == NULL)
2914 return FALSE;
2915
2916 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2917 && strcmp (bfd_get_section_name (input_bfd,
2918 input_section),
2919 name + 5) == 0);
2920
2921 sreloc = bfd_get_section_by_name (dynobj, name);
2922 BFD_ASSERT (sreloc != NULL);
2923 }
2924
2925 skip = FALSE;
2926 relocate = FALSE;
2927
2928 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2929 info,
2930 input_section,
2931 rel->r_offset);
2932 if (outrel.r_offset == (bfd_vma) -1)
2933 skip = TRUE;
2934 else if (outrel.r_offset == (bfd_vma) -2)
2935 skip = relocate = TRUE;
2936 outrel.r_offset += (input_section->output_section->vma
2937 + input_section->output_offset);
2938
2939 if (skip)
2940 memset (&outrel, 0, sizeof outrel);
2941 else if ( r_type == R_M32R_10_PCREL_RELA
2942 || r_type == R_M32R_18_PCREL_RELA
2943 || r_type == R_M32R_26_PCREL_RELA
2944 || r_type == R_M32R_REL32)
2945 {
2946 BFD_ASSERT (h != NULL && h->dynindx != -1);
2947 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2948 outrel.r_addend = rel->r_addend;
2949 }
2950 else
2951 {
2952 /* h->dynindx may be -1 if this symbol was marked to
2953 become local. */
2954 if (h == NULL
2955 || ((info->symbolic || h->dynindx == -1)
2956 && h->def_regular))
2957 {
2958 relocate = TRUE;
2959 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2960 outrel.r_addend = relocation + rel->r_addend;
2961 }
2962 else
2963 {
2964 BFD_ASSERT (h->dynindx != -1);
2965 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2966 outrel.r_addend = relocation + rel->r_addend;
2967 }
2968 }
2969
2970 loc = sreloc->contents;
2971 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2972 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2973 ++sreloc->reloc_count;
2974
2975 /* If this reloc is against an external symbol, we do
2976 not want to fiddle with the addend. Otherwise, we
2977 need to include the symbol value so that it becomes
2978 an addend for the dynamic reloc. */
2979 if (! relocate)
2980 continue;
2981 break;
2982 }
2983 else if (r_type != R_M32R_10_PCREL_RELA)
2984 break;
2985 /* Fall through. */
2986
2987 case (int) R_M32R_10_PCREL :
2988 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2989 contents, offset,
2990 sec, relocation, addend);
2991 goto check_reloc;
2992
2993 case (int) R_M32R_HI16_SLO :
2994 case (int) R_M32R_HI16_ULO :
2995 {
2996 Elf_Internal_Rela *lorel;
2997
2998 /* We allow an arbitrary number of HI16 relocs before the
2999 LO16 reloc. This permits gcc to emit the HI and LO relocs
3000 itself. */
3001 for (lorel = rel + 1;
3002 (lorel < relend
3003 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
3004 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3005 lorel++)
3006 continue;
3007 if (lorel < relend
3008 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3009 {
3010 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3011 contents, relocation + addend);
3012 r = bfd_reloc_ok;
3013 }
3014 else
3015 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3016 contents, offset,
3017 relocation, addend);
3018 }
3019
3020 goto check_reloc;
3021
3022 case (int) R_M32R_SDA16_RELA:
3023 case (int) R_M32R_SDA16 :
3024 {
3025 const char *name;
3026
3027 BFD_ASSERT (sec != NULL);
3028 name = bfd_get_section_name (abfd, sec);
3029
3030 if ( strcmp (name, ".sdata") == 0
3031 || strcmp (name, ".sbss") == 0
3032 || strcmp (name, ".scommon") == 0)
3033 {
3034 bfd_vma sda_base;
3035 bfd *out_bfd = sec->output_section->owner;
3036
3037 r = m32r_elf_final_sda_base (out_bfd, info,
3038 &errmsg,
3039 &sda_base);
3040 if (r != bfd_reloc_ok)
3041 {
3042 ret = FALSE;
3043 goto check_reloc;
3044 }
3045
3046 /* At this point `relocation' contains the object's
3047 address. */
3048 relocation -= sda_base;
3049 /* Now it contains the offset from _SDA_BASE_. */
3050 }
3051 else
3052 {
3053 (*_bfd_error_handler)
3054 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3055 input_bfd,
3056 sec,
3057 sym_name,
3058 m32r_elf_howto_table[(int) r_type].name);
3059 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3060 ret = FALSE;
3061 continue;
3062 }
3063 }
3064 /* Fall through. */
3065
3066 default : /* OLD_M32R_RELOC */
3067
3068 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3069 contents, offset,
3070 relocation, addend);
3071 goto check_reloc;
3072 }
3073
3074 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3075 contents, rel->r_offset,
3076 relocation, rel->r_addend);
3077
3078 }
3079
3080 check_reloc:
3081
3082 if (r != bfd_reloc_ok)
3083 {
3084 /* FIXME: This should be generic enough to go in a utility. */
3085 const char *name;
3086
3087 if (h != NULL)
3088 name = h->root.root.string;
3089 else
3090 {
3091 name = (bfd_elf_string_from_elf_section
3092 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3093 if (name == NULL || *name == '\0')
3094 name = bfd_section_name (input_bfd, sec);
3095 }
3096
3097 if (errmsg != NULL)
3098 goto common_error;
3099
3100 switch (r)
3101 {
3102 case bfd_reloc_overflow:
3103 if (! ((*info->callbacks->reloc_overflow)
3104 (info, (h ? &h->root : NULL), name, howto->name,
3105 (bfd_vma) 0, input_bfd, input_section, offset)))
3106 return FALSE;
3107 break;
3108
3109 case bfd_reloc_undefined:
3110 if (! ((*info->callbacks->undefined_symbol)
3111 (info, name, input_bfd, input_section,
3112 offset, TRUE)))
3113 return FALSE;
3114 break;
3115
3116 case bfd_reloc_outofrange:
3117 errmsg = _("internal error: out of range error");
3118 goto common_error;
3119
3120 case bfd_reloc_notsupported:
3121 errmsg = _("internal error: unsupported relocation error");
3122 goto common_error;
3123
3124 case bfd_reloc_dangerous:
3125 errmsg = _("internal error: dangerous error");
3126 goto common_error;
3127
3128 default:
3129 errmsg = _("internal error: unknown error");
3130 /* fall through */
3131
3132 common_error:
3133 if (!((*info->callbacks->warning)
3134 (info, errmsg, name, input_bfd, input_section,
3135 offset)))
3136 return FALSE;
3137 break;
3138 }
3139 }
3140 }
3141
3142 return ret;
3143 }
3144
3145 /* Finish up dynamic symbol handling. We set the contents of various
3146 dynamic sections here. */
3147
3148 static bfd_boolean
3149 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3150 struct bfd_link_info *info,
3151 struct elf_link_hash_entry *h,
3152 Elf_Internal_Sym *sym)
3153 {
3154 struct elf_m32r_link_hash_table *htab;
3155 bfd *dynobj;
3156 bfd_byte *loc;
3157
3158 #ifdef DEBUG_PIC
3159 printf ("m32r_elf_finish_dynamic_symbol()\n");
3160 #endif
3161
3162 htab = m32r_elf_hash_table (info);
3163 dynobj = htab->root.dynobj;
3164
3165 if (h->plt.offset != (bfd_vma) -1)
3166 {
3167 asection *splt;
3168 asection *sgot;
3169 asection *srela;
3170
3171 bfd_vma plt_index;
3172 bfd_vma got_offset;
3173 Elf_Internal_Rela rela;
3174
3175 /* This symbol has an entry in the procedure linkage table. Set
3176 it up. */
3177
3178 BFD_ASSERT (h->dynindx != -1);
3179
3180 splt = htab->splt;
3181 sgot = htab->sgotplt;
3182 srela = htab->srelplt;
3183 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3184
3185 /* Get the index in the procedure linkage table which
3186 corresponds to this symbol. This is the index of this symbol
3187 in all the symbols for which we are making plt entries. The
3188 first entry in the procedure linkage table is reserved. */
3189 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3190
3191 /* Get the offset into the .got table of the entry that
3192 corresponds to this function. Each .got entry is 4 bytes.
3193 The first three are reserved. */
3194 got_offset = (plt_index + 3) * 4;
3195
3196 /* Fill in the entry in the procedure linkage table. */
3197 if (! info->shared)
3198 {
3199 bfd_put_32 (output_bfd,
3200 (PLT_ENTRY_WORD0b
3201 + (((sgot->output_section->vma
3202 + sgot->output_offset
3203 + got_offset) >> 16) & 0xffff)),
3204 splt->contents + h->plt.offset);
3205 bfd_put_32 (output_bfd,
3206 (PLT_ENTRY_WORD1b
3207 + ((sgot->output_section->vma
3208 + sgot->output_offset
3209 + got_offset) & 0xffff)),
3210 splt->contents + h->plt.offset + 4);
3211 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3212 splt->contents + h->plt.offset + 8);
3213 bfd_put_32 (output_bfd,
3214 (PLT_ENTRY_WORD3
3215 + plt_index * sizeof (Elf32_External_Rela)),
3216 splt->contents + h->plt.offset + 12);
3217 bfd_put_32 (output_bfd,
3218 (PLT_ENTRY_WORD4
3219 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3220 splt->contents + h->plt.offset + 16);
3221 }
3222 else
3223 {
3224 bfd_put_32 (output_bfd,
3225 PLT_ENTRY_WORD0 + got_offset,
3226 splt->contents + h->plt.offset);
3227 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3228 splt->contents + h->plt.offset + 4);
3229 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3230 splt->contents + h->plt.offset + 8);
3231 bfd_put_32 (output_bfd,
3232 (PLT_ENTRY_WORD3
3233 + plt_index * sizeof (Elf32_External_Rela)),
3234 splt->contents + h->plt.offset + 12);
3235 bfd_put_32 (output_bfd,
3236 (PLT_ENTRY_WORD4
3237 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3238 splt->contents + h->plt.offset + 16);
3239 }
3240
3241 /* Fill in the entry in the global offset table. */
3242 bfd_put_32 (output_bfd,
3243 (splt->output_section->vma
3244 + splt->output_offset
3245 + h->plt.offset
3246 + 12), /* same offset */
3247 sgot->contents + got_offset);
3248
3249 /* Fill in the entry in the .rela.plt section. */
3250 rela.r_offset = (sgot->output_section->vma
3251 + sgot->output_offset
3252 + got_offset);
3253 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3254 rela.r_addend = 0;
3255 loc = srela->contents;
3256 loc += plt_index * sizeof (Elf32_External_Rela);
3257 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3258
3259 if (!h->def_regular)
3260 {
3261 /* Mark the symbol as undefined, rather than as defined in
3262 the .plt section. Leave the value alone. */
3263 sym->st_shndx = SHN_UNDEF;
3264 }
3265 }
3266
3267 if (h->got.offset != (bfd_vma) -1)
3268 {
3269 asection *sgot;
3270 asection *srela;
3271 Elf_Internal_Rela rela;
3272
3273 /* This symbol has an entry in the global offset table. Set it
3274 up. */
3275
3276 sgot = htab->sgot;
3277 srela = htab->srelgot;
3278 BFD_ASSERT (sgot != NULL && srela != NULL);
3279
3280 rela.r_offset = (sgot->output_section->vma
3281 + sgot->output_offset
3282 + (h->got.offset &~ 1));
3283
3284 /* If this is a -Bsymbolic link, and the symbol is defined
3285 locally, we just want to emit a RELATIVE reloc. Likewise if
3286 the symbol was forced to be local because of a version file.
3287 The entry in the global offset table will already have been
3288 initialized in the relocate_section function. */
3289 if (info->shared
3290 && (info->symbolic
3291 || h->dynindx == -1
3292 || h->forced_local)
3293 && h->def_regular)
3294 {
3295 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3296 rela.r_addend = (h->root.u.def.value
3297 + h->root.u.def.section->output_section->vma
3298 + h->root.u.def.section->output_offset);
3299 }
3300 else
3301 {
3302 BFD_ASSERT ((h->got.offset & 1) == 0);
3303 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3304 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3305 rela.r_addend = 0;
3306 }
3307
3308 loc = srela->contents;
3309 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3310 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3311 ++srela->reloc_count;
3312 }
3313
3314 if (h->needs_copy)
3315 {
3316 asection *s;
3317 Elf_Internal_Rela rela;
3318
3319 /* This symbols needs a copy reloc. Set it up. */
3320
3321 BFD_ASSERT (h->dynindx != -1
3322 && (h->root.type == bfd_link_hash_defined
3323 || h->root.type == bfd_link_hash_defweak));
3324
3325 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3326 ".rela.bss");
3327 BFD_ASSERT (s != NULL);
3328
3329 rela.r_offset = (h->root.u.def.value
3330 + h->root.u.def.section->output_section->vma
3331 + h->root.u.def.section->output_offset);
3332 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3333 rela.r_addend = 0;
3334 loc = s->contents;
3335 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3336 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3337 ++s->reloc_count;
3338 }
3339
3340 /* Mark some specially defined symbols as absolute. */
3341 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3342 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3343 sym->st_shndx = SHN_ABS;
3344
3345 return TRUE;
3346 }
3347
3348
3349 /* Finish up the dynamic sections. */
3350
3351 static bfd_boolean
3352 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3353 struct bfd_link_info *info)
3354 {
3355 struct elf_m32r_link_hash_table *htab;
3356 bfd *dynobj;
3357 asection *sdyn;
3358 asection *sgot;
3359
3360 #ifdef DEBUG_PIC
3361 printf ("m32r_elf_finish_dynamic_sections()\n");
3362 #endif
3363
3364 htab = m32r_elf_hash_table (info);
3365 dynobj = htab->root.dynobj;
3366
3367 sgot = htab->sgotplt;
3368 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3369
3370 if (htab->root.dynamic_sections_created)
3371 {
3372 asection *splt;
3373 Elf32_External_Dyn *dyncon, *dynconend;
3374
3375 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3376
3377 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3378 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3379
3380 for (; dyncon < dynconend; dyncon++)
3381 {
3382 Elf_Internal_Dyn dyn;
3383 const char *name;
3384 asection *s;
3385
3386 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3387
3388 switch (dyn.d_tag)
3389 {
3390 default:
3391 break;
3392
3393 case DT_PLTGOT:
3394 name = ".got";
3395 s = htab->sgot->output_section;
3396 goto get_vma;
3397 case DT_JMPREL:
3398 name = ".rela.plt";
3399 s = htab->srelplt->output_section;
3400 get_vma:
3401 BFD_ASSERT (s != NULL);
3402 dyn.d_un.d_ptr = s->vma;
3403 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3404 break;
3405
3406 case DT_PLTRELSZ:
3407 s = htab->srelplt->output_section;
3408 BFD_ASSERT (s != NULL);
3409 dyn.d_un.d_val = s->size;
3410 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3411 break;
3412
3413 case DT_RELASZ:
3414 /* My reading of the SVR4 ABI indicates that the
3415 procedure linkage table relocs (DT_JMPREL) should be
3416 included in the overall relocs (DT_RELA). This is
3417 what Solaris does. However, UnixWare can not handle
3418 that case. Therefore, we override the DT_RELASZ entry
3419 here to make it not include the JMPREL relocs. Since
3420 the linker script arranges for .rela.plt to follow all
3421 other relocation sections, we don't have to worry
3422 about changing the DT_RELA entry. */
3423 if (htab->srelplt != NULL)
3424 {
3425 s = htab->srelplt->output_section;
3426 dyn.d_un.d_val -= s->size;
3427 }
3428 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3429 break;
3430 }
3431 }
3432
3433 /* Fill in the first entry in the procedure linkage table. */
3434 splt = htab->splt;
3435 if (splt && splt->size > 0)
3436 {
3437 if (info->shared)
3438 {
3439 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3440 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3441 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3442 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3443 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3444 }
3445 else
3446 {
3447 unsigned long addr;
3448 /* addr = .got + 4 */
3449 addr = sgot->output_section->vma + sgot->output_offset + 4;
3450 bfd_put_32 (output_bfd,
3451 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3452 splt->contents);
3453 bfd_put_32 (output_bfd,
3454 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3455 splt->contents + 4);
3456 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3457 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3458 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3459 }
3460
3461 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3462 PLT_ENTRY_SIZE;
3463 }
3464 }
3465
3466 /* Fill in the first three entries in the global offset table. */
3467 if (sgot && sgot->size > 0)
3468 {
3469 if (sdyn == NULL)
3470 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3471 else
3472 bfd_put_32 (output_bfd,
3473 sdyn->output_section->vma + sdyn->output_offset,
3474 sgot->contents);
3475 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3476 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3477
3478 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3479 }
3480
3481 return TRUE;
3482 }
3483
3484 \f
3485 /* Set the right machine number. */
3486
3487 static bfd_boolean
3488 m32r_elf_object_p (bfd *abfd)
3489 {
3490 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3491 {
3492 default:
3493 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3494 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3495 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3496 }
3497 return TRUE;
3498 }
3499
3500 /* Store the machine number in the flags field. */
3501
3502 static void
3503 m32r_elf_final_write_processing (bfd *abfd,
3504 bfd_boolean linker ATTRIBUTE_UNUSED)
3505 {
3506 unsigned long val;
3507
3508 switch (bfd_get_mach (abfd))
3509 {
3510 default:
3511 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3512 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3513 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3514 }
3515
3516 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3517 elf_elfheader (abfd)->e_flags |= val;
3518 }
3519
3520 /* Function to keep M32R specific file flags. */
3521
3522 static bfd_boolean
3523 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3524 {
3525 BFD_ASSERT (!elf_flags_init (abfd)
3526 || elf_elfheader (abfd)->e_flags == flags);
3527
3528 elf_elfheader (abfd)->e_flags = flags;
3529 elf_flags_init (abfd) = TRUE;
3530 return TRUE;
3531 }
3532
3533 /* Merge backend specific data from an object file to the output
3534 object file when linking. */
3535
3536 static bfd_boolean
3537 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3538 {
3539 flagword out_flags;
3540 flagword in_flags;
3541
3542 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3543 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3544 return TRUE;
3545
3546 in_flags = elf_elfheader (ibfd)->e_flags;
3547 out_flags = elf_elfheader (obfd)->e_flags;
3548
3549 if (! elf_flags_init (obfd))
3550 {
3551 /* If the input is the default architecture then do not
3552 bother setting the flags for the output architecture,
3553 instead allow future merges to do this. If no future
3554 merges ever set these flags then they will retain their
3555 unitialised values, which surprise surprise, correspond
3556 to the default values. */
3557 if (bfd_get_arch_info (ibfd)->the_default)
3558 return TRUE;
3559
3560 elf_flags_init (obfd) = TRUE;
3561 elf_elfheader (obfd)->e_flags = in_flags;
3562
3563 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3564 && bfd_get_arch_info (obfd)->the_default)
3565 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3566 bfd_get_mach (ibfd));
3567
3568 return TRUE;
3569 }
3570
3571 /* Check flag compatibility. */
3572 if (in_flags == out_flags)
3573 return TRUE;
3574
3575 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3576 {
3577 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3578 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3579 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3580 {
3581 (*_bfd_error_handler)
3582 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3583
3584 bfd_set_error (bfd_error_bad_value);
3585 return FALSE;
3586 }
3587 }
3588
3589 return TRUE;
3590 }
3591
3592 /* Display the flags field. */
3593
3594 static bfd_boolean
3595 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3596 {
3597 FILE * file = (FILE *) ptr;
3598
3599 BFD_ASSERT (abfd != NULL && ptr != NULL);
3600
3601 _bfd_elf_print_private_bfd_data (abfd, ptr);
3602
3603 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3604
3605 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3606 {
3607 default:
3608 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3609 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3610 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3611 }
3612
3613 fputc ('\n', file);
3614
3615 return TRUE;
3616 }
3617
3618 static asection *
3619 m32r_elf_gc_mark_hook (asection *sec,
3620 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3621 Elf_Internal_Rela *rel,
3622 struct elf_link_hash_entry *h,
3623 Elf_Internal_Sym *sym)
3624 {
3625 if (h != NULL)
3626 {
3627 switch (ELF32_R_TYPE (rel->r_info))
3628 {
3629 case R_M32R_GNU_VTINHERIT:
3630 case R_M32R_GNU_VTENTRY:
3631 case R_M32R_RELA_GNU_VTINHERIT:
3632 case R_M32R_RELA_GNU_VTENTRY:
3633 break;
3634
3635 default:
3636 switch (h->root.type)
3637 {
3638 case bfd_link_hash_defined:
3639 case bfd_link_hash_defweak:
3640 return h->root.u.def.section;
3641
3642 case bfd_link_hash_common:
3643 return h->root.u.c.p->section;
3644
3645 default:
3646 break;
3647 }
3648 }
3649 }
3650 else
3651 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3652
3653 return NULL;
3654 }
3655
3656 static bfd_boolean
3657 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3658 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3659 asection *sec ATTRIBUTE_UNUSED,
3660 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3661 {
3662 /* Update the got entry reference counts for the section being removed. */
3663 Elf_Internal_Shdr *symtab_hdr;
3664 struct elf_link_hash_entry **sym_hashes;
3665 bfd_signed_vma *local_got_refcounts;
3666 const Elf_Internal_Rela *rel, *relend;
3667
3668 elf_section_data (sec)->local_dynrel = NULL;
3669
3670 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3671 sym_hashes = elf_sym_hashes (abfd);
3672 local_got_refcounts = elf_local_got_refcounts (abfd);
3673
3674 relend = relocs + sec->reloc_count;
3675 for (rel = relocs; rel < relend; rel++)
3676 {
3677 unsigned long r_symndx;
3678 struct elf_link_hash_entry *h = NULL;
3679
3680 r_symndx = ELF32_R_SYM (rel->r_info);
3681 if (r_symndx >= symtab_hdr->sh_info)
3682 {
3683 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3684 while (h->root.type == bfd_link_hash_indirect
3685 || h->root.type == bfd_link_hash_warning)
3686 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3687 }
3688
3689 switch (ELF32_R_TYPE (rel->r_info))
3690 {
3691 case R_M32R_GOT16_HI_ULO:
3692 case R_M32R_GOT16_HI_SLO:
3693 case R_M32R_GOT16_LO:
3694 case R_M32R_GOTOFF:
3695 case R_M32R_GOTOFF_HI_ULO:
3696 case R_M32R_GOTOFF_HI_SLO:
3697 case R_M32R_GOTOFF_LO:
3698 case R_M32R_GOT24:
3699 case R_M32R_GOTPC_HI_ULO:
3700 case R_M32R_GOTPC_HI_SLO:
3701 case R_M32R_GOTPC_LO:
3702 case R_M32R_GOTPC24:
3703 if (h != NULL)
3704 {
3705 if (h->got.refcount > 0)
3706 h->got.refcount--;
3707 }
3708 else
3709 {
3710 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3711 local_got_refcounts[r_symndx]--;
3712 }
3713 break;
3714
3715 case R_M32R_16_RELA:
3716 case R_M32R_24_RELA:
3717 case R_M32R_32_RELA:
3718 case R_M32R_REL32:
3719 case R_M32R_HI16_ULO_RELA:
3720 case R_M32R_HI16_SLO_RELA:
3721 case R_M32R_LO16_RELA:
3722 case R_M32R_SDA16_RELA:
3723 case R_M32R_10_PCREL_RELA:
3724 case R_M32R_18_PCREL_RELA:
3725 case R_M32R_26_PCREL_RELA:
3726 if (h != NULL)
3727 {
3728 struct elf_m32r_link_hash_entry *eh;
3729 struct elf_m32r_dyn_relocs **pp;
3730 struct elf_m32r_dyn_relocs *p;
3731
3732 if (!info->shared && h->plt.refcount > 0)
3733 h->plt.refcount -= 1;
3734
3735 eh = (struct elf_m32r_link_hash_entry *) h;
3736
3737 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3738 if (p->sec == sec)
3739 {
3740 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3741 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3742 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3743 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3744 p->pc_count -= 1;
3745 p->count -= 1;
3746 if (p->count == 0)
3747 *pp = p->next;
3748 break;
3749 }
3750 }
3751 break;
3752
3753 case R_M32R_26_PLTREL:
3754 if (h != NULL)
3755 {
3756 if (h->plt.refcount > 0)
3757 h->plt.refcount--;
3758 }
3759 break;
3760
3761 default:
3762 break;
3763 }
3764 }
3765
3766 return TRUE;
3767 }
3768
3769 /* Look through the relocs for a section during the first phase.
3770 Since we don't do .gots or .plts, we just need to consider the
3771 virtual table relocs for gc. */
3772
3773 static bfd_boolean
3774 m32r_elf_check_relocs (bfd *abfd,
3775 struct bfd_link_info *info,
3776 asection *sec,
3777 const Elf_Internal_Rela *relocs)
3778 {
3779 Elf_Internal_Shdr *symtab_hdr;
3780 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3781 const Elf_Internal_Rela *rel;
3782 const Elf_Internal_Rela *rel_end;
3783 struct elf_m32r_link_hash_table *htab;
3784 bfd *dynobj;
3785 bfd_vma *local_got_offsets;
3786 asection *sgot, *srelgot, *sreloc;
3787
3788 if (info->relocatable)
3789 return TRUE;
3790
3791 sgot = srelgot = sreloc = NULL;
3792
3793 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3794 sym_hashes = elf_sym_hashes (abfd);
3795 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3796 if (!elf_bad_symtab (abfd))
3797 sym_hashes_end -= symtab_hdr->sh_info;
3798
3799 htab = m32r_elf_hash_table (info);
3800 dynobj = htab->root.dynobj;
3801 local_got_offsets = elf_local_got_offsets (abfd);
3802
3803 rel_end = relocs + sec->reloc_count;
3804 for (rel = relocs; rel < rel_end; rel++)
3805 {
3806 int r_type;
3807 struct elf_link_hash_entry *h;
3808 unsigned long r_symndx;
3809
3810 r_symndx = ELF32_R_SYM (rel->r_info);
3811 r_type = ELF32_R_TYPE (rel->r_info);
3812 if (r_symndx < symtab_hdr->sh_info)
3813 h = NULL;
3814 else
3815 {
3816 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3817 while (h->root.type == bfd_link_hash_indirect
3818 || h->root.type == bfd_link_hash_warning)
3819 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3820 }
3821
3822 /* Some relocs require a global offset table. */
3823 if (htab->sgot == NULL)
3824 {
3825 switch (r_type)
3826 {
3827 case R_M32R_GOT16_HI_ULO:
3828 case R_M32R_GOT16_HI_SLO:
3829 case R_M32R_GOTOFF:
3830 case R_M32R_GOTOFF_HI_ULO:
3831 case R_M32R_GOTOFF_HI_SLO:
3832 case R_M32R_GOTOFF_LO:
3833 case R_M32R_GOT16_LO:
3834 case R_M32R_GOTPC24:
3835 case R_M32R_GOTPC_HI_ULO:
3836 case R_M32R_GOTPC_HI_SLO:
3837 case R_M32R_GOTPC_LO:
3838 case R_M32R_GOT24:
3839 if (dynobj == NULL)
3840 htab->root.dynobj = dynobj = abfd;
3841 if (! create_got_section (dynobj, info))
3842 return FALSE;
3843 break;
3844
3845 default:
3846 break;
3847 }
3848 }
3849
3850 switch (r_type)
3851 {
3852 case R_M32R_GOT16_HI_ULO:
3853 case R_M32R_GOT16_HI_SLO:
3854 case R_M32R_GOT16_LO:
3855 case R_M32R_GOT24:
3856
3857 if (h != NULL)
3858 h->got.refcount += 1;
3859 else
3860 {
3861 bfd_signed_vma *local_got_refcounts;
3862
3863 /* This is a global offset table entry for a local
3864 symbol. */
3865 local_got_refcounts = elf_local_got_refcounts (abfd);
3866 if (local_got_refcounts == NULL)
3867 {
3868 bfd_size_type size;
3869
3870 size = symtab_hdr->sh_info;
3871 size *= sizeof (bfd_signed_vma);
3872 local_got_refcounts = bfd_zalloc (abfd, size);
3873 if (local_got_refcounts == NULL)
3874 return FALSE;
3875 elf_local_got_refcounts (abfd) = local_got_refcounts;
3876 }
3877 local_got_refcounts[r_symndx] += 1;
3878 }
3879 break;
3880
3881 case R_M32R_26_PLTREL:
3882 /* This symbol requires a procedure linkage table entry. We
3883 actually build the entry in adjust_dynamic_symbol,
3884 because this might be a case of linking PIC code without
3885 linking in any dynamic objects, in which case we don't
3886 need to generate a procedure linkage table after all. */
3887
3888 /* If this is a local symbol, we resolve it directly without
3889 creating a procedure linkage table entry. */
3890 if (h == NULL)
3891 continue;
3892
3893 if (h->forced_local)
3894 break;
3895
3896 h->needs_plt = 1;
3897 h->plt.refcount += 1;
3898 break;
3899
3900 case R_M32R_16_RELA:
3901 case R_M32R_24_RELA:
3902 case R_M32R_32_RELA:
3903 case R_M32R_REL32:
3904 case R_M32R_HI16_ULO_RELA:
3905 case R_M32R_HI16_SLO_RELA:
3906 case R_M32R_LO16_RELA:
3907 case R_M32R_SDA16_RELA:
3908 case R_M32R_10_PCREL_RELA:
3909 case R_M32R_18_PCREL_RELA:
3910 case R_M32R_26_PCREL_RELA:
3911
3912 if (h != NULL && !info->shared)
3913 {
3914 h->non_got_ref = 1;
3915 h->plt.refcount += 1;
3916 }
3917
3918 /* If we are creating a shared library, and this is a reloc
3919 against a global symbol, or a non PC relative reloc
3920 against a local symbol, then we need to copy the reloc
3921 into the shared library. However, if we are linking with
3922 -Bsymbolic, we do not need to copy a reloc against a
3923 global symbol which is defined in an object we are
3924 including in the link (i.e., DEF_REGULAR is set). At
3925 this point we have not seen all the input files, so it is
3926 possible that DEF_REGULAR is not set now but will be set
3927 later (it is never cleared). We account for that
3928 possibility below by storing information in the
3929 dyn_relocs field of the hash table entry. A similar
3930 situation occurs when creating shared libraries and symbol
3931 visibility changes render the symbol local.
3932
3933 If on the other hand, we are creating an executable, we
3934 may need to keep relocations for symbols satisfied by a
3935 dynamic library if we manage to avoid copy relocs for the
3936 symbol. */
3937 if ((info->shared
3938 && (sec->flags & SEC_ALLOC) != 0
3939 && (( r_type != R_M32R_26_PCREL_RELA
3940 && r_type != R_M32R_18_PCREL_RELA
3941 && r_type != R_M32R_10_PCREL_RELA
3942 && r_type != R_M32R_REL32)
3943 || (h != NULL
3944 && (! info->symbolic
3945 || h->root.type == bfd_link_hash_defweak
3946 || !h->def_regular))))
3947 || (!info->shared
3948 && (sec->flags & SEC_ALLOC) != 0
3949 && h != NULL
3950 && (h->root.type == bfd_link_hash_defweak
3951 || !h->def_regular)))
3952 {
3953 struct elf_m32r_dyn_relocs *p;
3954 struct elf_m32r_dyn_relocs **head;
3955
3956 if (dynobj == NULL)
3957 htab->root.dynobj = dynobj = abfd;
3958
3959 /* When creating a shared object, we must copy these
3960 relocs into the output file. We create a reloc
3961 section in dynobj and make room for the reloc. */
3962 if (sreloc == NULL)
3963 {
3964 const char *name;
3965
3966 name = (bfd_elf_string_from_elf_section
3967 (abfd,
3968 elf_elfheader (abfd)->e_shstrndx,
3969 elf_section_data (sec)->rel_hdr.sh_name));
3970 if (name == NULL)
3971 return FALSE;
3972
3973 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3974 && strcmp (bfd_get_section_name (abfd, sec),
3975 name + 5) == 0);
3976
3977 sreloc = bfd_get_section_by_name (dynobj, name);
3978 if (sreloc == NULL)
3979 {
3980 flagword flags;
3981
3982 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3983 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3984 if ((sec->flags & SEC_ALLOC) != 0)
3985 flags |= SEC_ALLOC | SEC_LOAD;
3986 sreloc = bfd_make_section_with_flags (dynobj,
3987 name,
3988 flags);
3989 if (sreloc == NULL
3990 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
3991 return FALSE;
3992 }
3993 elf_section_data (sec)->sreloc = sreloc;
3994 }
3995
3996 /* If this is a global symbol, we count the number of
3997 relocations we need for this symbol. */
3998 if (h != NULL)
3999 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
4000 else
4001 {
4002 asection *s;
4003 void *vpp;
4004
4005 /* Track dynamic relocs needed for local syms too. */
4006 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4007 sec, r_symndx);
4008 if (s == NULL)
4009 return FALSE;
4010
4011 vpp = &elf_section_data (s)->local_dynrel;
4012 head = (struct elf_m32r_dyn_relocs **) vpp;
4013 }
4014
4015 p = *head;
4016 if (p == NULL || p->sec != sec)
4017 {
4018 bfd_size_type amt = sizeof (*p);
4019
4020 p = bfd_alloc (dynobj, amt);
4021 if (p == NULL)
4022 return FALSE;
4023 p->next = *head;
4024 *head = p;
4025 p->sec = sec;
4026 p->count = 0;
4027 p->pc_count = 0;
4028 }
4029
4030 p->count += 1;
4031 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4032 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
4033 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
4034 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
4035 p->pc_count += 1;
4036 }
4037 break;
4038
4039 /* This relocation describes the C++ object vtable hierarchy.
4040 Reconstruct it for later use during GC. */
4041 case R_M32R_RELA_GNU_VTINHERIT:
4042 case R_M32R_GNU_VTINHERIT:
4043 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4044 return FALSE;
4045 break;
4046
4047 /* This relocation describes which C++ vtable entries are actually
4048 used. Record for later use during GC. */
4049 case R_M32R_GNU_VTENTRY:
4050 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4051 return FALSE;
4052 break;
4053 case R_M32R_RELA_GNU_VTENTRY:
4054 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4055 return FALSE;
4056 break;
4057 }
4058 }
4059
4060 return TRUE;
4061 }
4062
4063 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4064 {
4065 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4066 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4067 { NULL, 0, 0, 0, 0 }
4068 };
4069
4070 static bfd_boolean
4071 m32r_elf_fake_sections (bfd *abfd,
4072 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4073 asection *sec)
4074 {
4075 const char *name;
4076
4077 name = bfd_get_section_name (abfd, sec);
4078
4079 /* The generic elf_fake_sections will set up REL_HDR using the
4080 default kind of relocations. But, we may actually need both
4081 kinds of relocations, so we set up the second header here.
4082
4083 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4084 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4085 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4086 of the resulting empty .rela.<section> sections starts with
4087 sh_offset == object size, and ld doesn't allow that. While the check
4088 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4089 avoided by not emitting those useless sections in the first place. */
4090 if ((sec->flags & SEC_RELOC) != 0)
4091 {
4092 struct bfd_elf_section_data *esd;
4093 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4094
4095 esd = elf_section_data (sec);
4096 BFD_ASSERT (esd->rel_hdr2 == NULL);
4097 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4098 if (!esd->rel_hdr2)
4099 return FALSE;
4100 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4101 !sec->use_rela_p);
4102 }
4103
4104 return TRUE;
4105 }
4106
4107 static enum elf_reloc_type_class
4108 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4109 {
4110 switch ((int) ELF32_R_TYPE (rela->r_info))
4111 {
4112 case R_M32R_RELATIVE: return reloc_class_relative;
4113 case R_M32R_JMP_SLOT: return reloc_class_plt;
4114 case R_M32R_COPY: return reloc_class_copy;
4115 default: return reloc_class_normal;
4116 }
4117 }
4118 \f
4119 #define ELF_ARCH bfd_arch_m32r
4120 #define ELF_MACHINE_CODE EM_M32R
4121 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4122 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4123
4124 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4125 #define TARGET_BIG_NAME "elf32-m32r"
4126 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4127 #define TARGET_LITTLE_NAME "elf32-m32rle"
4128
4129 #define elf_info_to_howto m32r_info_to_howto
4130 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4131 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4132 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4133 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4134 #define elf_backend_relocate_section m32r_elf_relocate_section
4135 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4136 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4137 #define elf_backend_check_relocs m32r_elf_check_relocs
4138
4139 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4140 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4141 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4142 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4143 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4144 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4145 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4146 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4147
4148 #define elf_backend_can_gc_sections 1
4149 /*#if !USE_REL
4150 #define elf_backend_rela_normal 1
4151 #endif*/
4152 #define elf_backend_can_refcount 1
4153 #define elf_backend_want_got_plt 1
4154 #define elf_backend_plt_readonly 1
4155 #define elf_backend_want_plt_sym 0
4156 #define elf_backend_got_header_size 12
4157
4158 #define elf_backend_may_use_rel_p 1
4159 #ifdef USE_M32R_OLD_RELOC
4160 #define elf_backend_default_use_rela_p 0
4161 #define elf_backend_may_use_rela_p 0
4162 #else
4163 #define elf_backend_default_use_rela_p 1
4164 #define elf_backend_may_use_rela_p 1
4165 #define elf_backend_fake_sections m32r_elf_fake_sections
4166 #endif
4167
4168 #define elf_backend_object_p m32r_elf_object_p
4169 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4170 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4171 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4172 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4173 #define elf_backend_special_sections m32r_elf_special_sections
4174
4175 #include "elf32-target.h"
4176
4177 #undef ELF_MAXPAGESIZE
4178 #define ELF_MAXPAGESIZE 0x1000
4179
4180 #undef TARGET_BIG_SYM
4181 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4182 #undef TARGET_BIG_NAME
4183 #define TARGET_BIG_NAME "elf32-m32r-linux"
4184 #undef TARGET_LITTLE_SYM
4185 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4186 #undef TARGET_LITTLE_NAME
4187 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4188 #undef elf32_bed
4189 #define elf32_bed elf32_m32r_lin_bed
4190
4191 #include "elf32-target.h"
4192
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