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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 2006 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/m32r.h"
26
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
29
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
33 to work with. */
34 /* #define USE_REL 1
35
36 #ifndef USE_REL
37 #define USE_REL 0
38 #endif */
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
40
41 /* Functions for the M32R ELF linker. */
42
43 /* The name of the dynamic interpreter. This is put in the .interp
44 section. */
45
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
47
48 /* The nop opcode we use. */
49
50 #define M32R_NOP 0x7000f000
51
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
53
54 /* The size in bytes of an entry in the procedure linkage table. */
55
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
58
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
62
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
68
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
74
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
82
83
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
85
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 reloc_howto_type *howto,
89 asection *input_section,
90 bfd_byte *data,
91 bfd_vma offset,
92 asection *symbol_section ATTRIBUTE_UNUSED,
93 bfd_vma symbol_value,
94 bfd_vma addend)
95 {
96 bfd_signed_vma relocation;
97 unsigned long x;
98 bfd_reloc_status_type status;
99
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
103
104 relocation = symbol_value + addend;
105 /* Make it pc relative. */
106 relocation -= (input_section->output_section->vma
107 + input_section->output_offset);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation -= (offset & -(bfd_vma) 4);
111
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
114 else
115 status = bfd_reloc_ok;
116
117 x = bfd_get_16 (abfd, data + offset);
118 relocation >>= howto->rightshift;
119 relocation <<= howto->bitpos;
120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
122
123 return status;
124 }
125
126 /* Handle the R_M32R_10_PCREL reloc. */
127
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd * abfd,
130 arelent * reloc_entry,
131 asymbol * symbol,
132 void * data,
133 asection * input_section,
134 bfd * output_bfd,
135 char ** error_message ATTRIBUTE_UNUSED)
136 {
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd != NULL
139 && (symbol->flags & BSF_SECTION_SYM) == 0
140 && (! reloc_entry->howto->partial_inplace
141 || reloc_entry->addend == 0))
142 {
143 reloc_entry->address += input_section->output_offset;
144 return bfd_reloc_ok;
145 }
146
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
150
151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
152 input_section,
153 data, reloc_entry->address,
154 symbol->section,
155 (symbol->value
156 + symbol->section->output_section->vma
157 + symbol->section->output_offset),
158 reloc_entry->addend);
159 }
160
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
163
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd *input_bfd,
166 arelent *reloc_entry,
167 asymbol *symbol,
168 void * data,
169 asection *input_section,
170 bfd *output_bfd,
171 char **error_message ATTRIBUTE_UNUSED)
172 {
173 bfd_reloc_status_type ret;
174 bfd_vma relocation;
175 bfd_byte *inplace_address;
176
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd != NULL
181 && (symbol->flags & BSF_SECTION_SYM) == 0
182 && reloc_entry->addend == 0)
183 {
184 reloc_entry->address += input_section->output_offset;
185 return bfd_reloc_ok;
186 }
187
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
193
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196 return bfd_reloc_outofrange;
197
198 ret = bfd_reloc_ok;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
202
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
205 relocation = 0;
206 else
207 relocation = symbol->value;
208
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
211 {
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
214 }
215
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
218
219 #define DOIT(x) \
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
223
224 switch (reloc_entry->howto->size)
225 {
226 case 1:
227 {
228 short x = bfd_get_16 (input_bfd, inplace_address);
229 DOIT (x);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
231 }
232 break;
233 case 2:
234 {
235 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
236 DOIT (x);
237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
238 }
239 break;
240 default:
241 BFD_ASSERT (0);
242 }
243
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
246
247 return ret;
248 }
249
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
255
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 arelent *reloc_entry,
259 asymbol *symbol,
260 void * data ATTRIBUTE_UNUSED,
261 asection *input_section,
262 bfd *output_bfd,
263 char **error_message ATTRIBUTE_UNUSED)
264 {
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd != NULL
267 && (symbol->flags & BSF_SECTION_SYM) == 0
268 && (! reloc_entry->howto->partial_inplace
269 || reloc_entry->addend == 0))
270 {
271 reloc_entry->address += input_section->output_offset;
272 return bfd_reloc_ok;
273 }
274
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
278
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
281 abort ();
282 }
283
284 \f
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
300
301 struct m32r_hi16
302 {
303 struct m32r_hi16 *next;
304 bfd_byte *addr;
305 bfd_vma addend;
306 };
307
308 /* FIXME: This should not be a static variable. */
309
310 static struct m32r_hi16 *m32r_hi16_list;
311
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 arelent *reloc_entry,
315 asymbol *symbol,
316 void * data,
317 asection *input_section,
318 bfd *output_bfd,
319 char **error_message ATTRIBUTE_UNUSED)
320 {
321 bfd_reloc_status_type ret;
322 bfd_vma relocation;
323 struct m32r_hi16 *n;
324
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd != NULL
329 && (symbol->flags & BSF_SECTION_SYM) == 0
330 && reloc_entry->addend == 0)
331 {
332 reloc_entry->address += input_section->output_offset;
333 return bfd_reloc_ok;
334 }
335
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
338 return bfd_reloc_outofrange;
339
340 ret = bfd_reloc_ok;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
344
345 if (bfd_is_com_section (symbol->section))
346 relocation = 0;
347 else
348 relocation = symbol->value;
349
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
353
354 /* Save the information, and let LO16 do the actual relocation. */
355 n = bfd_malloc ((bfd_size_type) sizeof *n);
356 if (n == NULL)
357 return bfd_reloc_outofrange;
358 n->addr = (bfd_byte *) data + reloc_entry->address;
359 n->addend = relocation;
360 n->next = m32r_hi16_list;
361 m32r_hi16_list = n;
362
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
365
366 return ret;
367 }
368
369 /* Handle an M32R ELF HI16 reloc. */
370
371 static void
372 m32r_elf_relocate_hi16 (bfd *input_bfd,
373 int type,
374 Elf_Internal_Rela *relhi,
375 Elf_Internal_Rela *rello,
376 bfd_byte *contents,
377 bfd_vma addend)
378 {
379 unsigned long insn;
380 bfd_vma addlo;
381
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
383
384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385 if (type == R_M32R_HI16_SLO)
386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
387 else
388 addlo &= 0xffff;
389
390 addend += ((insn & 0xffff) << 16) + addlo;
391
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
395 addend += 0x10000;
396
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
400 }
401
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
405
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd *input_bfd,
408 arelent *reloc_entry,
409 asymbol *symbol,
410 void * data,
411 asection *input_section,
412 bfd *output_bfd,
413 char **error_message)
414 {
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd != NULL
419 && (symbol->flags & BSF_SECTION_SYM) == 0
420 && reloc_entry->addend == 0)
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425
426 if (m32r_hi16_list != NULL)
427 {
428 struct m32r_hi16 *l;
429
430 l = m32r_hi16_list;
431 while (l != NULL)
432 {
433 unsigned long insn;
434 unsigned long val;
435 unsigned long vallo;
436 struct m32r_hi16 *next;
437
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn = bfd_get_32 (input_bfd, l->addr);
442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val = ((insn & 0xffff) << 16) + vallo;
445 val += l->addend;
446
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
449 val += 0x10000;
450
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
453
454 next = l->next;
455 free (l);
456 l = next;
457 }
458
459 m32r_hi16_list = NULL;
460 }
461
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 input_section, output_bfd, error_message);
469 }
470
471 \f
472 static reloc_howto_type m32r_elf_howto_table[] =
473 {
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 32, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_bitfield, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
491 0, /* rightshift */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
503
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 24, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
533
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
537 slot for pc. */
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
541 again. */
542 HOWTO (R_M32R_10_PCREL, /* type */
543 2, /* rightshift */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
545 10, /* bitsize */
546 TRUE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_signed, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE, /* partial_inplace */
552 0xff, /* src_mask */
553 0xff, /* dst_mask */
554 TRUE), /* pcrel_offset */
555
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
575 again. */
576 HOWTO (R_M32R_26_PCREL, /* type */
577 2, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 26, /* bitsize */
580 TRUE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
589
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_dont, /* complain_on_overflow */
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
607 16, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
619
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
634
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
649
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 0, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 0, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 EMPTY_HOWTO (13),
681 EMPTY_HOWTO (14),
682 EMPTY_HOWTO (15),
683 EMPTY_HOWTO (16),
684 EMPTY_HOWTO (17),
685 EMPTY_HOWTO (18),
686 EMPTY_HOWTO (19),
687 EMPTY_HOWTO (20),
688 EMPTY_HOWTO (21),
689 EMPTY_HOWTO (22),
690 EMPTY_HOWTO (23),
691 EMPTY_HOWTO (24),
692 EMPTY_HOWTO (25),
693 EMPTY_HOWTO (26),
694 EMPTY_HOWTO (27),
695 EMPTY_HOWTO (28),
696 EMPTY_HOWTO (29),
697 EMPTY_HOWTO (30),
698 EMPTY_HOWTO (31),
699 EMPTY_HOWTO (32),
700
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 32, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
730
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 24, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
745
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 10, /* bitsize */
750 TRUE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE, /* partial_inplace */
756 0xff, /* src_mask */
757 0xff, /* dst_mask */
758 TRUE), /* pcrel_offset */
759
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 TRUE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
774
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 26, /* bitsize */
780 TRUE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
789
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
792 16, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
804
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
819
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
849
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
854 0, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0, /* dst_mask */
863 FALSE), /* pcrel_offset */
864
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 0, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0, /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
884 32, /* bitsize */
885 TRUE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_bitfield, /* complain_on_overflow */
888 bfd_elf_generic_reloc,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE), /* pcrel_offset */
894
895 EMPTY_HOWTO (46),
896 EMPTY_HOWTO (47),
897
898 /* Like R_M32R_24, but referring to the GOT table entry for
899 the symbol. */
900 HOWTO (R_M32R_GOT24, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 24, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_unsigned, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
913
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL, /* type */
917 2, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 24, /* bitsize */
920 TRUE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_signed, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE), /* pcrel_offset */
929
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_bitfield, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* Like R_M32R_24, but used when setting global offset table
950 entries. */
951 HOWTO (R_M32R_GLOB_DAT, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_bitfield, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
964
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 32, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
979
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
982 addend. */
983 HOWTO (R_M32R_RELATIVE, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 32, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
996
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 24, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_bitfield, /* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1010
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1012 table register. */
1013 HOWTO (R_M32R_GOTPC24, /* type */
1014 0, /* rightshift */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 24, /* bitsize */
1017 TRUE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_unsigned, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE), /* pcrel_offset */
1026
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028 the symbol. */
1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1042
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044 the symbol. */
1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1060 the symbol. */
1061 HOWTO (R_M32R_GOT16_LO, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 0, /* bitpos */
1067 complain_overflow_dont, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1074
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077 the symbol. */
1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 bfd_elf_generic_reloc, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE), /* pcrel_offset */
1091
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094 the symbol. */
1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE), /* pcrel_offset */
1108
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1111 the symbol. */
1112 HOWTO (R_M32R_GOTPC_LO, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE), /* pcrel_offset */
1125
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 bfd_elf_generic_reloc, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167 };
1168
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1170
1171 struct m32r_reloc_map
1172 {
1173 bfd_reloc_code_real_type bfd_reloc_val;
1174 unsigned char elf_reloc_val;
1175 };
1176
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1179 {
1180 { BFD_RELOC_NONE, R_M32R_NONE },
1181 { BFD_RELOC_16, R_M32R_16 },
1182 { BFD_RELOC_32, R_M32R_32 },
1183 { BFD_RELOC_M32R_24, R_M32R_24 },
1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1193 };
1194 #else
1195 static const struct m32r_reloc_map m32r_reloc_map[] =
1196 {
1197 { BFD_RELOC_NONE, R_M32R_NONE },
1198 { BFD_RELOC_16, R_M32R_16_RELA },
1199 { BFD_RELOC_32, R_M32R_32_RELA },
1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1211
1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1229 };
1230 #endif
1231
1232 static reloc_howto_type *
1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 bfd_reloc_code_real_type code)
1235 {
1236 unsigned int i;
1237
1238 #ifdef USE_M32R_OLD_RELOC
1239 for (i = 0;
1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1241 i++)
1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1244
1245 #else /* ! USE_M32R_OLD_RELOC */
1246
1247 for (i = 0;
1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1249 i++)
1250 if (m32r_reloc_map[i].bfd_reloc_val == code)
1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1252 #endif
1253
1254 return NULL;
1255 }
1256
1257 /* Set the howto pointer for an M32R ELF reloc. */
1258
1259 static void
1260 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1261 arelent *cache_ptr,
1262 Elf_Internal_Rela *dst)
1263 {
1264 unsigned int r_type;
1265
1266 r_type = ELF32_R_TYPE (dst->r_info);
1267 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1268 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1269 }
1270
1271 static void
1272 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1273 arelent *cache_ptr,
1274 Elf_Internal_Rela *dst)
1275 {
1276 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1277 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1278 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1279 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1280 }
1281
1282 \f
1283 /* Given a BFD section, try to locate the corresponding ELF section
1284 index. */
1285
1286 static bfd_boolean
1287 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1288 asection *sec,
1289 int *retval)
1290 {
1291 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1292 {
1293 *retval = SHN_M32R_SCOMMON;
1294 return TRUE;
1295 }
1296 return FALSE;
1297 }
1298
1299 /* M32R ELF uses two common sections. One is the usual one, and the other
1300 is for small objects. All the small objects are kept together, and then
1301 referenced via one register, which yields faster assembler code. It is
1302 up to the compiler to emit an instruction to load the register with
1303 _SDA_BASE. This is what we use for the small common section. This
1304 approach is copied from elf32-mips.c. */
1305 static asection m32r_elf_scom_section;
1306 static asymbol m32r_elf_scom_symbol;
1307 static asymbol *m32r_elf_scom_symbol_ptr;
1308
1309 /* Handle the special M32R section numbers that a symbol may use. */
1310
1311 static void
1312 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1313 {
1314 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1315
1316 switch (elfsym->internal_elf_sym.st_shndx)
1317 {
1318 case SHN_M32R_SCOMMON:
1319 if (m32r_elf_scom_section.name == NULL)
1320 {
1321 /* Initialize the small common section. */
1322 m32r_elf_scom_section.name = ".scommon";
1323 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1324 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1325 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1326 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1327 m32r_elf_scom_symbol.name = ".scommon";
1328 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1329 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1330 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1331 }
1332 asym->section = &m32r_elf_scom_section;
1333 asym->value = elfsym->internal_elf_sym.st_size;
1334 break;
1335 }
1336 }
1337
1338 /* Hook called by the linker routine which adds symbols from an object
1339 file. We must handle the special M32R section numbers here.
1340 We also keep watching for whether we need to create the sdata special
1341 linker sections. */
1342
1343 static bfd_boolean
1344 m32r_elf_add_symbol_hook (bfd *abfd,
1345 struct bfd_link_info *info,
1346 Elf_Internal_Sym *sym,
1347 const char **namep,
1348 flagword *flagsp ATTRIBUTE_UNUSED,
1349 asection **secp,
1350 bfd_vma *valp)
1351 {
1352 if (! info->relocatable
1353 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1354 && strcmp (*namep, "_SDA_BASE_") == 0
1355 && is_elf_hash_table (info->hash))
1356 {
1357 /* This is simpler than using _bfd_elf_create_linker_section
1358 (our needs are simpler than ppc's needs). Also
1359 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1360 section already exists a new one is created that follows it which
1361 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1362 struct elf_link_hash_entry *h;
1363 struct bfd_link_hash_entry *bh;
1364 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1365
1366 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1367 if (s == NULL)
1368 {
1369 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1370 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1371
1372 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1373 flags);
1374 if (s == NULL)
1375 return FALSE;
1376 bfd_set_section_alignment (abfd, s, 2);
1377 }
1378
1379 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1380 FALSE, FALSE, FALSE);
1381
1382 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1383 && !(_bfd_generic_link_add_one_symbol (info,
1384 abfd,
1385 "_SDA_BASE_",
1386 BSF_GLOBAL,
1387 s,
1388 (bfd_vma) 32768,
1389 NULL,
1390 FALSE,
1391 get_elf_backend_data (abfd)->collect,
1392 &bh)))
1393 return FALSE;
1394 h = (struct elf_link_hash_entry *) bh;
1395 h->type = STT_OBJECT;
1396 }
1397
1398 switch (sym->st_shndx)
1399 {
1400 case SHN_M32R_SCOMMON:
1401 *secp = bfd_make_section_old_way (abfd, ".scommon");
1402 (*secp)->flags |= SEC_IS_COMMON;
1403 *valp = sym->st_size;
1404 break;
1405 }
1406
1407 return TRUE;
1408 }
1409
1410 /* We have to figure out the SDA_BASE value, so that we can adjust the
1411 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1412 BFD. If we can't find it, we're stuck. We cache it in the ELF
1413 target data. We don't need to adjust the symbol value for an
1414 external symbol if we are producing relocatable output. */
1415
1416 static bfd_reloc_status_type
1417 m32r_elf_final_sda_base (bfd *output_bfd,
1418 struct bfd_link_info *info,
1419 const char **error_message,
1420 bfd_vma *psb)
1421 {
1422 if (elf_gp (output_bfd) == 0)
1423 {
1424 struct bfd_link_hash_entry *h;
1425
1426 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1427 if (h != NULL && h->type == bfd_link_hash_defined)
1428 elf_gp (output_bfd) = (h->u.def.value
1429 + h->u.def.section->output_section->vma
1430 + h->u.def.section->output_offset);
1431 else
1432 {
1433 /* Only get the error once. */
1434 *psb = elf_gp (output_bfd) = 4;
1435 *error_message =
1436 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1437 return bfd_reloc_dangerous;
1438 }
1439 }
1440 *psb = elf_gp (output_bfd);
1441 return bfd_reloc_ok;
1442 }
1443 \f
1444 /* Return size of a PLT entry. */
1445 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1446
1447 /* The m32r linker needs to keep track of the number of relocs that it
1448 decides to copy in check_relocs for each symbol. This is so that
1449 it can discard PC relative relocs if it doesn't need them when
1450 linking with -Bsymbolic. We store the information in a field
1451 extending the regular ELF linker hash table. */
1452
1453 /* This structure keeps track of the number of PC relative relocs we
1454 have copied for a given symbol. */
1455
1456 struct elf_m32r_pcrel_relocs_copied
1457 {
1458 /* Next section. */
1459 struct elf_m32r_pcrel_relocs_copied *next;
1460 /* A section in dynobj. */
1461 asection *section;
1462 /* Number of relocs copied in this section. */
1463 bfd_size_type count;
1464 };
1465
1466 /* The sh linker needs to keep track of the number of relocs that it
1467 decides to copy as dynamic relocs in check_relocs for each symbol.
1468 This is so that it can later discard them if they are found to be
1469 unnecessary. We store the information in a field extending the
1470 regular ELF linker hash table. */
1471
1472 struct elf_m32r_dyn_relocs
1473 {
1474 struct elf_m32r_dyn_relocs *next;
1475
1476 /* The input section of the reloc. */
1477 asection *sec;
1478
1479 /* Total number of relocs copied for the input section. */
1480 bfd_size_type count;
1481
1482 /* Number of pc-relative relocs copied for the input section. */
1483 bfd_size_type pc_count;
1484 };
1485
1486
1487 /* m32r ELF linker hash entry. */
1488
1489 struct elf_m32r_link_hash_entry
1490 {
1491 struct elf_link_hash_entry root;
1492
1493 /* Track dynamic relocs copied for this symbol. */
1494 struct elf_m32r_dyn_relocs *dyn_relocs;
1495 };
1496
1497 /* m32r ELF linker hash table. */
1498
1499 struct elf_m32r_link_hash_table
1500 {
1501 struct elf_link_hash_table root;
1502
1503 /* Short-cuts to get to dynamic linker sections. */
1504 asection *sgot;
1505 asection *sgotplt;
1506 asection *srelgot;
1507 asection *splt;
1508 asection *srelplt;
1509 asection *sdynbss;
1510 asection *srelbss;
1511
1512 /* Small local sym to section mapping cache. */
1513 struct sym_sec_cache sym_sec;
1514 };
1515
1516 /* Traverse an m32r ELF linker hash table. */
1517
1518 #define m32r_elf_link_hash_traverse(table, func, info) \
1519 (elf_link_hash_traverse \
1520 (&(table)->root, \
1521 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1522 (info)))
1523
1524 /* Get the m32r ELF linker hash table from a link_info structure. */
1525
1526
1527 #define m32r_elf_hash_table(p) \
1528 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1529
1530 /* Create an entry in an m32r ELF linker hash table. */
1531
1532 static struct bfd_hash_entry *
1533 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1534 struct bfd_hash_table *table,
1535 const char *string)
1536 {
1537 struct elf_m32r_link_hash_entry *ret =
1538 (struct elf_m32r_link_hash_entry *) entry;
1539
1540 /* Allocate the structure if it has not already been allocated by a
1541 subclass. */
1542 if (ret == NULL)
1543 ret = bfd_hash_allocate (table,
1544 sizeof (struct elf_m32r_link_hash_entry));
1545 if (ret == NULL)
1546 return NULL;
1547
1548 /* Call the allocation method of the superclass. */
1549 ret = ((struct elf_m32r_link_hash_entry *)
1550 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1551 table, string));
1552 if (ret != NULL)
1553 {
1554 struct elf_m32r_link_hash_entry *eh;
1555
1556 eh = (struct elf_m32r_link_hash_entry *) ret;
1557 eh->dyn_relocs = NULL;
1558 }
1559
1560 return (struct bfd_hash_entry *) ret;
1561 }
1562
1563 /* Create an m32r ELF linker hash table. */
1564
1565 static struct bfd_link_hash_table *
1566 m32r_elf_link_hash_table_create (bfd *abfd)
1567 {
1568 struct elf_m32r_link_hash_table *ret;
1569 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1570
1571 ret = bfd_malloc (amt);
1572 if (ret == NULL)
1573 return NULL;
1574
1575 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1576 m32r_elf_link_hash_newfunc,
1577 sizeof (struct elf_m32r_link_hash_entry)))
1578 {
1579 free (ret);
1580 return NULL;
1581 }
1582
1583 ret->sgot = NULL;
1584 ret->sgotplt = NULL;
1585 ret->srelgot = NULL;
1586 ret->splt = NULL;
1587 ret->srelplt = NULL;
1588 ret->sdynbss = NULL;
1589 ret->srelbss = NULL;
1590 ret->sym_sec.abfd = NULL;
1591
1592 return &ret->root.root;
1593 }
1594
1595 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1596 shortcuts to them in our hash table. */
1597
1598 static bfd_boolean
1599 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1600 {
1601 struct elf_m32r_link_hash_table *htab;
1602
1603 if (! _bfd_elf_create_got_section (dynobj, info))
1604 return FALSE;
1605
1606 htab = m32r_elf_hash_table (info);
1607 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1608 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1609 if (! htab->sgot || ! htab->sgotplt)
1610 abort ();
1611
1612 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1613 (SEC_ALLOC
1614 | SEC_LOAD
1615 | SEC_HAS_CONTENTS
1616 | SEC_IN_MEMORY
1617 | SEC_LINKER_CREATED
1618 | SEC_READONLY));
1619 if (htab->srelgot == NULL
1620 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1621 return FALSE;
1622
1623 return TRUE;
1624 }
1625
1626 /* Create dynamic sections when linking against a dynamic object. */
1627
1628 static bfd_boolean
1629 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1630 {
1631 struct elf_m32r_link_hash_table *htab;
1632 flagword flags, pltflags;
1633 asection *s;
1634 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1635 int ptralign = 2; /* 32bit */
1636
1637 htab = m32r_elf_hash_table (info);
1638
1639 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1640 .rel[a].bss sections. */
1641 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1642 | SEC_LINKER_CREATED);
1643
1644 pltflags = flags;
1645 pltflags |= SEC_CODE;
1646 if (bed->plt_not_loaded)
1647 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1648 if (bed->plt_readonly)
1649 pltflags |= SEC_READONLY;
1650
1651 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1652 htab->splt = s;
1653 if (s == NULL
1654 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1655 return FALSE;
1656
1657 if (bed->want_plt_sym)
1658 {
1659 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1660 .plt section. */
1661 struct bfd_link_hash_entry *bh = NULL;
1662 struct elf_link_hash_entry *h;
1663
1664 if (! (_bfd_generic_link_add_one_symbol
1665 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1666 (bfd_vma) 0, NULL, FALSE,
1667 get_elf_backend_data (abfd)->collect, &bh)))
1668 return FALSE;
1669 h = (struct elf_link_hash_entry *) bh;
1670 h->def_regular = 1;
1671 h->type = STT_OBJECT;
1672 htab->root.hplt = h;
1673
1674 if (info->shared
1675 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1676 return FALSE;
1677 }
1678
1679 s = bfd_make_section_with_flags (abfd,
1680 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1681 flags | SEC_READONLY);
1682 htab->srelplt = s;
1683 if (s == NULL
1684 || ! bfd_set_section_alignment (abfd, s, ptralign))
1685 return FALSE;
1686
1687 if (htab->sgot == NULL
1688 && ! create_got_section (abfd, info))
1689 return FALSE;
1690
1691 {
1692 const char *secname;
1693 char *relname;
1694 flagword secflags;
1695 asection *sec;
1696
1697 for (sec = abfd->sections; sec; sec = sec->next)
1698 {
1699 secflags = bfd_get_section_flags (abfd, sec);
1700 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1701 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1702 continue;
1703 secname = bfd_get_section_name (abfd, sec);
1704 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1705 strcpy (relname, ".rela");
1706 strcat (relname, secname);
1707 if (bfd_get_section_by_name (abfd, secname))
1708 continue;
1709 s = bfd_make_section_with_flags (abfd, relname,
1710 flags | SEC_READONLY);
1711 if (s == NULL
1712 || ! bfd_set_section_alignment (abfd, s, ptralign))
1713 return FALSE;
1714 }
1715 }
1716
1717 if (bed->want_dynbss)
1718 {
1719 /* The .dynbss section is a place to put symbols which are defined
1720 by dynamic objects, are referenced by regular objects, and are
1721 not functions. We must allocate space for them in the process
1722 image and use a R_*_COPY reloc to tell the dynamic linker to
1723 initialize them at run time. The linker script puts the .dynbss
1724 section into the .bss section of the final image. */
1725 s = bfd_make_section_with_flags (abfd, ".dynbss",
1726 SEC_ALLOC | SEC_LINKER_CREATED);
1727 htab->sdynbss = s;
1728 if (s == NULL)
1729 return FALSE;
1730 /* The .rel[a].bss section holds copy relocs. This section is not
1731 normally needed. We need to create it here, though, so that the
1732 linker will map it to an output section. We can't just create it
1733 only if we need it, because we will not know whether we need it
1734 until we have seen all the input files, and the first time the
1735 main linker code calls BFD after examining all the input files
1736 (size_dynamic_sections) the input sections have already been
1737 mapped to the output sections. If the section turns out not to
1738 be needed, we can discard it later. We will never need this
1739 section when generating a shared object, since they do not use
1740 copy relocs. */
1741 if (! info->shared)
1742 {
1743 s = bfd_make_section_with_flags (abfd,
1744 (bed->default_use_rela_p
1745 ? ".rela.bss" : ".rel.bss"),
1746 flags | SEC_READONLY);
1747 htab->srelbss = s;
1748 if (s == NULL
1749 || ! bfd_set_section_alignment (abfd, s, ptralign))
1750 return FALSE;
1751 }
1752 }
1753
1754 return TRUE;
1755 }
1756
1757 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1758
1759 static void
1760 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1761 struct elf_link_hash_entry *dir,
1762 struct elf_link_hash_entry *ind)
1763 {
1764 struct elf_m32r_link_hash_entry * edir;
1765 struct elf_m32r_link_hash_entry * eind;
1766
1767 edir = (struct elf_m32r_link_hash_entry *) dir;
1768 eind = (struct elf_m32r_link_hash_entry *) ind;
1769
1770 if (eind->dyn_relocs != NULL)
1771 {
1772 if (edir->dyn_relocs != NULL)
1773 {
1774 struct elf_m32r_dyn_relocs **pp;
1775 struct elf_m32r_dyn_relocs *p;
1776
1777 /* Add reloc counts against the indirect sym to the direct sym
1778 list. Merge any entries against the same section. */
1779 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1780 {
1781 struct elf_m32r_dyn_relocs *q;
1782
1783 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1784 if (q->sec == p->sec)
1785 {
1786 q->pc_count += p->pc_count;
1787 q->count += p->count;
1788 *pp = p->next;
1789 break;
1790 }
1791 if (q == NULL)
1792 pp = &p->next;
1793 }
1794 *pp = edir->dyn_relocs;
1795 }
1796
1797 edir->dyn_relocs = eind->dyn_relocs;
1798 eind->dyn_relocs = NULL;
1799 }
1800
1801 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1802 }
1803
1804 \f
1805 /* Adjust a symbol defined by a dynamic object and referenced by a
1806 regular object. The current definition is in some section of the
1807 dynamic object, but we're not including those sections. We have to
1808 change the definition to something the rest of the link can
1809 understand. */
1810
1811 static bfd_boolean
1812 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1813 struct elf_link_hash_entry *h)
1814 {
1815 struct elf_m32r_link_hash_table *htab;
1816 struct elf_m32r_link_hash_entry *eh;
1817 struct elf_m32r_dyn_relocs *p;
1818 bfd *dynobj;
1819 asection *s;
1820 unsigned int power_of_two;
1821
1822 #ifdef DEBUG_PIC
1823 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1824 #endif
1825
1826 dynobj = elf_hash_table (info)->dynobj;
1827
1828 /* Make sure we know what is going on here. */
1829 BFD_ASSERT (dynobj != NULL
1830 && (h->needs_plt
1831 || h->u.weakdef != NULL
1832 || (h->def_dynamic
1833 && h->ref_regular
1834 && !h->def_regular)));
1835
1836 /* If this is a function, put it in the procedure linkage table. We
1837 will fill in the contents of the procedure linkage table later,
1838 when we know the address of the .got section. */
1839 if (h->type == STT_FUNC
1840 || h->needs_plt)
1841 {
1842 if (! info->shared
1843 && !h->def_dynamic
1844 && !h->ref_dynamic
1845 && h->root.type != bfd_link_hash_undefweak
1846 && h->root.type != bfd_link_hash_undefined)
1847 {
1848 /* This case can occur if we saw a PLT reloc in an input
1849 file, but the symbol was never referred to by a dynamic
1850 object. In such a case, we don't actually need to build
1851 a procedure linkage table, and we can just do a PCREL
1852 reloc instead. */
1853 h->plt.offset = (bfd_vma) -1;
1854 h->needs_plt = 0;
1855 }
1856
1857 return TRUE;
1858 }
1859 else
1860 h->plt.offset = (bfd_vma) -1;
1861
1862 /* If this is a weak symbol, and there is a real definition, the
1863 processor independent code will have arranged for us to see the
1864 real definition first, and we can just use the same value. */
1865 if (h->u.weakdef != NULL)
1866 {
1867 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1868 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1869 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1870 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1871 return TRUE;
1872 }
1873
1874 /* This is a reference to a symbol defined by a dynamic object which
1875 is not a function. */
1876
1877 /* If we are creating a shared library, we must presume that the
1878 only references to the symbol are via the global offset table.
1879 For such cases we need not do anything here; the relocations will
1880 be handled correctly by relocate_section. */
1881 if (info->shared)
1882 return TRUE;
1883
1884 /* If there are no references to this symbol that do not use the
1885 GOT, we don't need to generate a copy reloc. */
1886 if (!h->non_got_ref)
1887 return TRUE;
1888
1889 /* If -z nocopyreloc was given, we won't generate them either. */
1890 if (info->nocopyreloc)
1891 {
1892 h->non_got_ref = 0;
1893 return TRUE;
1894 }
1895
1896 eh = (struct elf_m32r_link_hash_entry *) h;
1897 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1898 {
1899 s = p->sec->output_section;
1900 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1901 break;
1902 }
1903
1904 /* If we didn't find any dynamic relocs in sections which needs the
1905 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1906 the copy reloc. */
1907 if (p == NULL)
1908 {
1909 h->non_got_ref = 0;
1910 return TRUE;
1911 }
1912
1913 if (h->size == 0)
1914 {
1915 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1916 h->root.root.string);
1917 return TRUE;
1918 }
1919
1920 /* We must allocate the symbol in our .dynbss section, which will
1921 become part of the .bss section of the executable. There will be
1922 an entry for this symbol in the .dynsym section. The dynamic
1923 object will contain position independent code, so all references
1924 from the dynamic object to this symbol will go through the global
1925 offset table. The dynamic linker will use the .dynsym entry to
1926 determine the address it must put in the global offset table, so
1927 both the dynamic object and the regular object will refer to the
1928 same memory location for the variable. */
1929
1930 htab = m32r_elf_hash_table (info);
1931 s = htab->sdynbss;
1932 BFD_ASSERT (s != NULL);
1933
1934 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1935 to copy the initial value out of the dynamic object and into the
1936 runtime process image. We need to remember the offset into the
1937 .rela.bss section we are going to use. */
1938 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1939 {
1940 asection *srel;
1941
1942 srel = htab->srelbss;
1943 BFD_ASSERT (srel != NULL);
1944 srel->size += sizeof (Elf32_External_Rela);
1945 h->needs_copy = 1;
1946 }
1947
1948 /* We need to figure out the alignment required for this symbol. I
1949 have no idea how ELF linkers handle this. */
1950 power_of_two = bfd_log2 (h->size);
1951 if (power_of_two > 3)
1952 power_of_two = 3;
1953
1954 /* Apply the required alignment. */
1955 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1956 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1957 {
1958 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1959 return FALSE;
1960 }
1961
1962 /* Define the symbol as being at this point in the section. */
1963 h->root.u.def.section = s;
1964 h->root.u.def.value = s->size;
1965
1966 /* Increment the section size to make room for the symbol. */
1967 s->size += h->size;
1968
1969 return TRUE;
1970 }
1971
1972 /* Allocate space in .plt, .got and associated reloc sections for
1973 dynamic relocs. */
1974
1975 static bfd_boolean
1976 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1977 {
1978 struct bfd_link_info *info;
1979 struct elf_m32r_link_hash_table *htab;
1980 struct elf_m32r_link_hash_entry *eh;
1981 struct elf_m32r_dyn_relocs *p;
1982
1983 if (h->root.type == bfd_link_hash_indirect)
1984 return TRUE;
1985
1986 if (h->root.type == bfd_link_hash_warning)
1987 /* When warning symbols are created, they **replace** the "real"
1988 entry in the hash table, thus we never get to see the real
1989 symbol in a hash traversal. So look at it now. */
1990 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1991
1992 info = (struct bfd_link_info *) inf;
1993 htab = m32r_elf_hash_table (info);
1994
1995 eh = (struct elf_m32r_link_hash_entry *) h;
1996
1997 if (htab->root.dynamic_sections_created
1998 && h->plt.refcount > 0)
1999 {
2000 /* Make sure this symbol is output as a dynamic symbol.
2001 Undefined weak syms won't yet be marked as dynamic. */
2002 if (h->dynindx == -1
2003 && !h->forced_local)
2004 {
2005 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2006 return FALSE;
2007 }
2008
2009 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2010 {
2011 asection *s = htab->splt;
2012
2013 /* If this is the first .plt entry, make room for the special
2014 first entry. */
2015 if (s->size == 0)
2016 s->size += PLT_ENTRY_SIZE;
2017
2018 h->plt.offset = s->size;
2019
2020 /* If this symbol is not defined in a regular file, and we are
2021 not generating a shared library, then set the symbol to this
2022 location in the .plt. This is required to make function
2023 pointers compare as equal between the normal executable and
2024 the shared library. */
2025 if (! info->shared
2026 && !h->def_regular)
2027 {
2028 h->root.u.def.section = s;
2029 h->root.u.def.value = h->plt.offset;
2030 }
2031
2032 /* Make room for this entry. */
2033 s->size += PLT_ENTRY_SIZE;
2034
2035 /* We also need to make an entry in the .got.plt section, which
2036 will be placed in the .got section by the linker script. */
2037 htab->sgotplt->size += 4;
2038
2039 /* We also need to make an entry in the .rel.plt section. */
2040 htab->srelplt->size += sizeof (Elf32_External_Rela);
2041 }
2042 else
2043 {
2044 h->plt.offset = (bfd_vma) -1;
2045 h->needs_plt = 0;
2046 }
2047 }
2048 else
2049 {
2050 h->plt.offset = (bfd_vma) -1;
2051 h->needs_plt = 0;
2052 }
2053
2054 if (h->got.refcount > 0)
2055 {
2056 asection *s;
2057 bfd_boolean dyn;
2058
2059 /* Make sure this symbol is output as a dynamic symbol.
2060 Undefined weak syms won't yet be marked as dynamic. */
2061 if (h->dynindx == -1
2062 && !h->forced_local)
2063 {
2064 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2065 return FALSE;
2066 }
2067
2068 s = htab->sgot;
2069
2070 h->got.offset = s->size;
2071 s->size += 4;
2072 dyn = htab->root.dynamic_sections_created;
2073 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2074 htab->srelgot->size += sizeof (Elf32_External_Rela);
2075 }
2076 else
2077 h->got.offset = (bfd_vma) -1;
2078
2079 if (eh->dyn_relocs == NULL)
2080 return TRUE;
2081
2082 /* In the shared -Bsymbolic case, discard space allocated for
2083 dynamic pc-relative relocs against symbols which turn out to be
2084 defined in regular objects. For the normal shared case, discard
2085 space for pc-relative relocs that have become local due to symbol
2086 visibility changes. */
2087
2088 if (info->shared)
2089 {
2090 if (h->def_regular
2091 && (h->forced_local
2092 || info->symbolic))
2093 {
2094 struct elf_m32r_dyn_relocs **pp;
2095
2096 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2097 {
2098 p->count -= p->pc_count;
2099 p->pc_count = 0;
2100 if (p->count == 0)
2101 *pp = p->next;
2102 else
2103 pp = &p->next;
2104 }
2105 }
2106
2107 /* Also discard relocs on undefined weak syms with non-default
2108 visibility. */
2109 if (eh->dyn_relocs != NULL
2110 && h->root.type == bfd_link_hash_undefweak)
2111 {
2112 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2113 eh->dyn_relocs = NULL;
2114
2115 /* Make sure undefined weak symbols are output as a dynamic
2116 symbol in PIEs. */
2117 else if (h->dynindx == -1
2118 && !h->forced_local)
2119 {
2120 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2121 return FALSE;
2122 }
2123 }
2124 }
2125 else
2126 {
2127 /* For the non-shared case, discard space for relocs against
2128 symbols which turn out to need copy relocs or are not
2129 dynamic. */
2130
2131 if (!h->non_got_ref
2132 && ((h->def_dynamic
2133 && !h->def_regular)
2134 || (htab->root.dynamic_sections_created
2135 && (h->root.type == bfd_link_hash_undefweak
2136 || h->root.type == bfd_link_hash_undefined))))
2137 {
2138 /* Make sure this symbol is output as a dynamic symbol.
2139 Undefined weak syms won't yet be marked as dynamic. */
2140 if (h->dynindx == -1
2141 && !h->forced_local)
2142 {
2143 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2144 return FALSE;
2145 }
2146
2147 /* If that succeeded, we know we'll be keeping all the
2148 relocs. */
2149 if (h->dynindx != -1)
2150 goto keep;
2151 }
2152
2153 eh->dyn_relocs = NULL;
2154
2155 keep: ;
2156 }
2157
2158 /* Finally, allocate space. */
2159 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2160 {
2161 asection *sreloc = elf_section_data (p->sec)->sreloc;
2162 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2163 }
2164
2165 return TRUE;
2166 }
2167
2168 /* Find any dynamic relocs that apply to read-only sections. */
2169
2170 static bfd_boolean
2171 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2172 {
2173 struct elf_m32r_link_hash_entry *eh;
2174 struct elf_m32r_dyn_relocs *p;
2175
2176 if (h->root.type == bfd_link_hash_warning)
2177 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2178
2179 eh = (struct elf_m32r_link_hash_entry *) h;
2180 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2181 {
2182 asection *s = p->sec->output_section;
2183
2184 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2185 {
2186 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2187
2188 info->flags |= DF_TEXTREL;
2189
2190 /* Not an error, just cut short the traversal. */
2191 return FALSE;
2192 }
2193 }
2194 return TRUE;
2195 }
2196
2197 /* Set the sizes of the dynamic sections. */
2198
2199 static bfd_boolean
2200 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2201 struct bfd_link_info *info)
2202 {
2203 struct elf_m32r_link_hash_table *htab;
2204 bfd *dynobj;
2205 asection *s;
2206 bfd_boolean relocs;
2207 bfd *ibfd;
2208
2209 #ifdef DEBUG_PIC
2210 printf ("m32r_elf_size_dynamic_sections()\n");
2211 #endif
2212
2213 htab = m32r_elf_hash_table (info);
2214 dynobj = htab->root.dynobj;
2215 BFD_ASSERT (dynobj != NULL);
2216
2217 if (htab->root.dynamic_sections_created)
2218 {
2219 /* Set the contents of the .interp section to the interpreter. */
2220 if (info->executable)
2221 {
2222 s = bfd_get_section_by_name (dynobj, ".interp");
2223 BFD_ASSERT (s != NULL);
2224 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2225 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2226 }
2227 }
2228
2229 /* Set up .got offsets for local syms, and space for local dynamic
2230 relocs. */
2231 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2232 {
2233 bfd_signed_vma *local_got;
2234 bfd_signed_vma *end_local_got;
2235 bfd_size_type locsymcount;
2236 Elf_Internal_Shdr *symtab_hdr;
2237 asection *srel;
2238
2239 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2240 continue;
2241
2242 for (s = ibfd->sections; s != NULL; s = s->next)
2243 {
2244 struct elf_m32r_dyn_relocs *p;
2245
2246 for (p = ((struct elf_m32r_dyn_relocs *)
2247 elf_section_data (s)->local_dynrel);
2248 p != NULL;
2249 p = p->next)
2250 {
2251 if (! bfd_is_abs_section (p->sec)
2252 && bfd_is_abs_section (p->sec->output_section))
2253 {
2254 /* Input section has been discarded, either because
2255 it is a copy of a linkonce section or due to
2256 linker script /DISCARD/, so we'll be discarding
2257 the relocs too. */
2258 }
2259 else if (p->count != 0)
2260 {
2261 srel = elf_section_data (p->sec)->sreloc;
2262 srel->size += p->count * sizeof (Elf32_External_Rela);
2263 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2264 info->flags |= DF_TEXTREL;
2265 }
2266 }
2267 }
2268
2269 local_got = elf_local_got_refcounts (ibfd);
2270 if (!local_got)
2271 continue;
2272
2273 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2274 locsymcount = symtab_hdr->sh_info;
2275 end_local_got = local_got + locsymcount;
2276 s = htab->sgot;
2277 srel = htab->srelgot;
2278 for (; local_got < end_local_got; ++local_got)
2279 {
2280 if (*local_got > 0)
2281 {
2282 *local_got = s->size;
2283 s->size += 4;
2284 if (info->shared)
2285 srel->size += sizeof (Elf32_External_Rela);
2286 }
2287 else
2288 *local_got = (bfd_vma) -1;
2289 }
2290 }
2291
2292 /* Allocate global sym .plt and .got entries, and space for global
2293 sym dynamic relocs. */
2294 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2295
2296 /* We now have determined the sizes of the various dynamic sections.
2297 Allocate memory for them. */
2298 relocs = FALSE;
2299 for (s = dynobj->sections; s != NULL; s = s->next)
2300 {
2301 if ((s->flags & SEC_LINKER_CREATED) == 0)
2302 continue;
2303
2304 if (s == htab->splt
2305 || s == htab->sgot
2306 || s == htab->sgotplt
2307 || s == htab->sdynbss)
2308 {
2309 /* Strip this section if we don't need it; see the
2310 comment below. */
2311 }
2312 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2313 {
2314 if (s->size != 0 && s != htab->srelplt)
2315 relocs = TRUE;
2316
2317 /* We use the reloc_count field as a counter if we need
2318 to copy relocs into the output file. */
2319 s->reloc_count = 0;
2320 }
2321 else
2322 /* It's not one of our sections, so don't allocate space. */
2323 continue;
2324
2325 if (s->size == 0)
2326 {
2327 /* If we don't need this section, strip it from the
2328 output file. This is mostly to handle .rela.bss and
2329 .rela.plt. We must create both sections in
2330 create_dynamic_sections, because they must be created
2331 before the linker maps input sections to output
2332 sections. The linker does that before
2333 adjust_dynamic_symbol is called, and it is that
2334 function which decides whether anything needs to go
2335 into these sections. */
2336 s->flags |= SEC_EXCLUDE;
2337 continue;
2338 }
2339
2340 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2341 continue;
2342
2343 /* Allocate memory for the section contents. We use bfd_zalloc
2344 here in case unused entries are not reclaimed before the
2345 section's contents are written out. This should not happen,
2346 but this way if it does, we get a R_M32R_NONE reloc instead
2347 of garbage. */
2348 s->contents = bfd_zalloc (dynobj, s->size);
2349 if (s->contents == NULL)
2350 return FALSE;
2351 }
2352
2353 if (htab->root.dynamic_sections_created)
2354 {
2355 /* Add some entries to the .dynamic section. We fill in the
2356 values later, in m32r_elf_finish_dynamic_sections, but we
2357 must add the entries now so that we get the correct size for
2358 the .dynamic section. The DT_DEBUG entry is filled in by the
2359 dynamic linker and used by the debugger. */
2360 #define add_dynamic_entry(TAG, VAL) \
2361 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2362
2363 if (info->executable)
2364 {
2365 if (! add_dynamic_entry (DT_DEBUG, 0))
2366 return FALSE;
2367 }
2368
2369 if (htab->splt->size != 0)
2370 {
2371 if (! add_dynamic_entry (DT_PLTGOT, 0)
2372 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2373 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2374 || ! add_dynamic_entry (DT_JMPREL, 0))
2375 return FALSE;
2376 }
2377
2378 if (relocs)
2379 {
2380 if (! add_dynamic_entry (DT_RELA, 0)
2381 || ! add_dynamic_entry (DT_RELASZ, 0)
2382 || ! add_dynamic_entry (DT_RELAENT,
2383 sizeof (Elf32_External_Rela)))
2384 return FALSE;
2385
2386 /* If any dynamic relocs apply to a read-only section,
2387 then we need a DT_TEXTREL entry. */
2388 if ((info->flags & DF_TEXTREL) == 0)
2389 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2390 info);
2391
2392 if ((info->flags & DF_TEXTREL) != 0)
2393 {
2394 if (! add_dynamic_entry (DT_TEXTREL, 0))
2395 return FALSE;
2396 }
2397 }
2398 }
2399 #undef add_dynamic_entry
2400
2401 return TRUE;
2402 }
2403
2404 /* Relocate an M32R/D ELF section.
2405 There is some attempt to make this function usable for many architectures,
2406 both for RELA and REL type relocs, if only to serve as a learning tool.
2407
2408 The RELOCATE_SECTION function is called by the new ELF backend linker
2409 to handle the relocations for a section.
2410
2411 The relocs are always passed as Rela structures; if the section
2412 actually uses Rel structures, the r_addend field will always be
2413 zero.
2414
2415 This function is responsible for adjust the section contents as
2416 necessary, and (if using Rela relocs and generating a
2417 relocatable output file) adjusting the reloc addend as
2418 necessary.
2419
2420 This function does not have to worry about setting the reloc
2421 address or the reloc symbol index.
2422
2423 LOCAL_SYMS is a pointer to the swapped in local symbols.
2424
2425 LOCAL_SECTIONS is an array giving the section in the input file
2426 corresponding to the st_shndx field of each local symbol.
2427
2428 The global hash table entry for the global symbols can be found
2429 via elf_sym_hashes (input_bfd).
2430
2431 When generating relocatable output, this function must handle
2432 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2433 going to be the section symbol corresponding to the output
2434 section, which means that the addend must be adjusted
2435 accordingly. */
2436
2437 static bfd_boolean
2438 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2439 struct bfd_link_info *info,
2440 bfd *input_bfd,
2441 asection *input_section,
2442 bfd_byte *contents,
2443 Elf_Internal_Rela *relocs,
2444 Elf_Internal_Sym *local_syms,
2445 asection **local_sections)
2446 {
2447 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2448 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2449 Elf_Internal_Rela *rel, *relend;
2450 /* Assume success. */
2451 bfd_boolean ret = TRUE;
2452
2453 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2454 bfd *dynobj;
2455 bfd_vma *local_got_offsets;
2456 asection *sgot, *splt, *sreloc;
2457 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2458
2459 dynobj = htab->root.dynobj;
2460 local_got_offsets = elf_local_got_offsets (input_bfd);
2461
2462 sgot = htab->sgot;
2463 splt = htab->splt;
2464 sreloc = NULL;
2465
2466 rel = relocs;
2467 relend = relocs + input_section->reloc_count;
2468 for (; rel < relend; rel++)
2469 {
2470 int r_type;
2471 reloc_howto_type *howto;
2472 unsigned long r_symndx;
2473 struct elf_link_hash_entry *h;
2474 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2475 ensure it's zero (we use REL relocs, not RELA). Therefore this
2476 should be assigning zero to `addend', but for clarity we use
2477 `r_addend'. */
2478 bfd_vma addend = rel->r_addend;
2479 bfd_vma offset = rel->r_offset;
2480 Elf_Internal_Sym *sym;
2481 asection *sec;
2482 const char *sym_name;
2483 bfd_reloc_status_type r;
2484 const char *errmsg = NULL;
2485 bfd_boolean use_rel = FALSE;
2486
2487 h = NULL;
2488 r_type = ELF32_R_TYPE (rel->r_info);
2489 if (r_type < 0 || r_type >= (int) R_M32R_max)
2490 {
2491 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2492 input_bfd,
2493 (int) r_type);
2494 bfd_set_error (bfd_error_bad_value);
2495 ret = FALSE;
2496 continue;
2497 }
2498
2499 if ( r_type == R_M32R_GNU_VTENTRY
2500 || r_type == R_M32R_GNU_VTINHERIT
2501 || r_type == R_M32R_NONE
2502 || r_type == R_M32R_RELA_GNU_VTENTRY
2503 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2504 continue;
2505
2506 if (r_type <= R_M32R_GNU_VTENTRY)
2507 use_rel = TRUE;
2508
2509 howto = m32r_elf_howto_table + r_type;
2510 r_symndx = ELF32_R_SYM (rel->r_info);
2511
2512 if (info->relocatable && use_rel)
2513 {
2514 /* This is a relocatable link. We don't have to change
2515 anything, unless the reloc is against a section symbol,
2516 in which case we have to adjust according to where the
2517 section symbol winds up in the output section. */
2518 sec = NULL;
2519 if (r_symndx >= symtab_hdr->sh_info)
2520 /* External symbol. */
2521 continue;
2522
2523 /* Local symbol. */
2524 sym = local_syms + r_symndx;
2525 sym_name = "<local symbol>";
2526 /* STT_SECTION: symbol is associated with a section. */
2527 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2528 /* Symbol isn't associated with a section. Nothing to do. */
2529 continue;
2530
2531 sec = local_sections[r_symndx];
2532 addend += sec->output_offset + sym->st_value;
2533
2534 /* If partial_inplace, we need to store any additional addend
2535 back in the section. */
2536 if (! howto->partial_inplace)
2537 continue;
2538 /* ??? Here is a nice place to call a special_function
2539 like handler. */
2540 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2541 r = _bfd_relocate_contents (howto, input_bfd,
2542 addend, contents + offset);
2543 else
2544 {
2545 Elf_Internal_Rela *lorel;
2546
2547 /* We allow an arbitrary number of HI16 relocs before the
2548 LO16 reloc. This permits gcc to emit the HI and LO relocs
2549 itself. */
2550 for (lorel = rel + 1;
2551 (lorel < relend
2552 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2553 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2554 lorel++)
2555 continue;
2556 if (lorel < relend
2557 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2558 {
2559 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2560 contents, addend);
2561 r = bfd_reloc_ok;
2562 }
2563 else
2564 r = _bfd_relocate_contents (howto, input_bfd,
2565 addend, contents + offset);
2566 }
2567 }
2568 else
2569 {
2570 bfd_vma relocation;
2571
2572 /* This is a final link. */
2573 sym = NULL;
2574 sec = NULL;
2575 h = NULL;
2576
2577 if (r_symndx < symtab_hdr->sh_info)
2578 {
2579 /* Local symbol. */
2580 sym = local_syms + r_symndx;
2581 sec = local_sections[r_symndx];
2582 sym_name = "<local symbol>";
2583
2584 if (!use_rel)
2585 {
2586 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2587 addend = rel->r_addend;
2588
2589 if (info->relocatable)
2590 {
2591 /* This is a relocatable link. We don't have to change
2592 anything, unless the reloc is against a section symbol,
2593 in which case we have to adjust according to where the
2594 section symbol winds up in the output section. */
2595 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2596 rel->r_addend += sec->output_offset + sym->st_value;
2597
2598 continue;
2599 }
2600 }
2601 else
2602 {
2603 relocation = (sec->output_section->vma
2604 + sec->output_offset
2605 + sym->st_value);
2606 }
2607 }
2608 else
2609 {
2610 /* External symbol. */
2611 if (info->relocatable && !use_rel)
2612 continue;
2613
2614 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2615 while (h->root.type == bfd_link_hash_indirect
2616 || h->root.type == bfd_link_hash_warning)
2617 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2618 sym_name = h->root.root.string;
2619
2620 if (h->root.type == bfd_link_hash_defined
2621 || h->root.type == bfd_link_hash_defweak)
2622 {
2623 bfd_boolean dyn;
2624 sec = h->root.u.def.section;
2625
2626 dyn = htab->root.dynamic_sections_created;
2627 sec = h->root.u.def.section;
2628 if (r_type == R_M32R_GOTPC24
2629 || (r_type == R_M32R_GOTPC_HI_ULO
2630 || r_type == R_M32R_GOTPC_HI_SLO
2631 || r_type == R_M32R_GOTPC_LO)
2632 || (r_type == R_M32R_26_PLTREL
2633 && h->plt.offset != (bfd_vma) -1)
2634 || ((r_type == R_M32R_GOT24
2635 || r_type == R_M32R_GOT16_HI_ULO
2636 || r_type == R_M32R_GOT16_HI_SLO
2637 || r_type == R_M32R_GOT16_LO)
2638 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2639 info->shared, h)
2640 && (! info->shared
2641 || (! info->symbolic && h->dynindx != -1)
2642 || !h->def_regular))
2643 || (info->shared
2644 && ((! info->symbolic && h->dynindx != -1)
2645 || !h->def_regular)
2646 && (((r_type == R_M32R_16_RELA
2647 || r_type == R_M32R_32_RELA
2648 || r_type == R_M32R_24_RELA
2649 || r_type == R_M32R_HI16_ULO_RELA
2650 || r_type == R_M32R_HI16_SLO_RELA
2651 || r_type == R_M32R_LO16_RELA)
2652 && !h->forced_local)
2653 || r_type == R_M32R_REL32
2654 || r_type == R_M32R_10_PCREL_RELA
2655 || r_type == R_M32R_18_PCREL_RELA
2656 || r_type == R_M32R_26_PCREL_RELA)
2657 && ((input_section->flags & SEC_ALLOC) != 0
2658 /* DWARF will emit R_M32R_16(24,32) relocations
2659 in its sections against symbols defined
2660 externally in shared libraries. We can't do
2661 anything with them here. */
2662 || ((input_section->flags & SEC_DEBUGGING) != 0
2663 && h->def_dynamic))))
2664 {
2665 /* In these cases, we don't need the relocation
2666 value. We check specially because in some
2667 obscure cases sec->output_section will be NULL. */
2668 relocation = 0;
2669 }
2670 else if (sec->output_section == NULL)
2671 {
2672 (*_bfd_error_handler)
2673 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2674 input_bfd,
2675 input_section,
2676 (long) rel->r_offset,
2677 howto->name,
2678 h->root.root.string);
2679
2680 relocation = 0;
2681 }
2682 else
2683 relocation = (h->root.u.def.value
2684 + sec->output_section->vma
2685 + sec->output_offset);
2686 }
2687 else if (h->root.type == bfd_link_hash_undefweak)
2688 relocation = 0;
2689 else if (info->unresolved_syms_in_objects == RM_IGNORE
2690 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2691 relocation = 0;
2692 else
2693 {
2694 if (! ((*info->callbacks->undefined_symbol)
2695 (info, h->root.root.string, input_bfd,
2696 input_section, offset,
2697 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2698 || ELF_ST_VISIBILITY (h->other)))))
2699 return FALSE;
2700 relocation = 0;
2701 }
2702 }
2703
2704 /* Sanity check the address. */
2705 if (offset > high_address)
2706 {
2707 r = bfd_reloc_outofrange;
2708 goto check_reloc;
2709 }
2710
2711 switch ((int) r_type)
2712 {
2713 case R_M32R_GOTOFF:
2714 /* Relocation is relative to the start of the global offset
2715 table (for ld24 rx, #uimm24). eg access at label+addend
2716
2717 ld24 rx. #label@GOTOFF + addend
2718 sub rx, r12. */
2719
2720 BFD_ASSERT (sgot != NULL);
2721
2722 relocation = -(relocation - sgot->output_section->vma);
2723 rel->r_addend = -rel->r_addend;
2724 break;
2725
2726 case R_M32R_GOTOFF_HI_ULO:
2727 case R_M32R_GOTOFF_HI_SLO:
2728 case R_M32R_GOTOFF_LO:
2729 BFD_ASSERT (sgot != NULL);
2730
2731 relocation -= sgot->output_section->vma;
2732
2733 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2734 && ((relocation + rel->r_addend) & 0x8000))
2735 rel->r_addend += 0x10000;
2736 break;
2737
2738 case R_M32R_GOTPC24:
2739 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2740 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2741 */
2742 relocation = sgot->output_section->vma;
2743 break;
2744
2745 case R_M32R_GOTPC_HI_ULO:
2746 case R_M32R_GOTPC_HI_SLO:
2747 case R_M32R_GOTPC_LO:
2748 {
2749 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2750 bl .+4
2751 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2752 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2753 or
2754 bl .+4
2755 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2756 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2757 */
2758 relocation = sgot->output_section->vma;
2759 relocation -= (input_section->output_section->vma
2760 + input_section->output_offset
2761 + rel->r_offset);
2762 if ((r_type == R_M32R_GOTPC_HI_SLO)
2763 && ((relocation + rel->r_addend) & 0x8000))
2764 rel->r_addend += 0x10000;
2765
2766 break;
2767 }
2768 case R_M32R_GOT16_HI_ULO:
2769 case R_M32R_GOT16_HI_SLO:
2770 case R_M32R_GOT16_LO:
2771 /* Fall through. */
2772 case R_M32R_GOT24:
2773 /* Relocation is to the entry for this symbol in the global
2774 offset table. */
2775 BFD_ASSERT (sgot != NULL);
2776
2777 if (h != NULL)
2778 {
2779 bfd_boolean dyn;
2780 bfd_vma off;
2781
2782 off = h->got.offset;
2783 BFD_ASSERT (off != (bfd_vma) -1);
2784
2785 dyn = htab->root.dynamic_sections_created;
2786 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2787 || (info->shared
2788 && (info->symbolic
2789 || h->dynindx == -1
2790 || h->forced_local)
2791 && h->def_regular))
2792 {
2793 /* This is actually a static link, or it is a
2794 -Bsymbolic link and the symbol is defined
2795 locally, or the symbol was forced to be local
2796 because of a version file. We must initialize
2797 this entry in the global offset table. Since the
2798 offset must always be a multiple of 4, we use the
2799 least significant bit to record whether we have
2800 initialized it already.
2801
2802 When doing a dynamic link, we create a .rela.got
2803 relocation entry to initialize the value. This
2804 is done in the finish_dynamic_symbol routine. */
2805 if ((off & 1) != 0)
2806 off &= ~1;
2807 else
2808 {
2809 bfd_put_32 (output_bfd, relocation,
2810 sgot->contents + off);
2811 h->got.offset |= 1;
2812 }
2813 }
2814
2815 relocation = sgot->output_offset + off;
2816 }
2817 else
2818 {
2819 bfd_vma off;
2820 bfd_byte *loc;
2821
2822 BFD_ASSERT (local_got_offsets != NULL
2823 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2824
2825 off = local_got_offsets[r_symndx];
2826
2827 /* The offset must always be a multiple of 4. We use
2828 the least significant bit to record whether we have
2829 already processed this entry. */
2830 if ((off & 1) != 0)
2831 off &= ~1;
2832 else
2833 {
2834 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2835
2836 if (info->shared)
2837 {
2838 asection *srelgot;
2839 Elf_Internal_Rela outrel;
2840
2841 /* We need to generate a R_M32R_RELATIVE reloc
2842 for the dynamic linker. */
2843 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2844 BFD_ASSERT (srelgot != NULL);
2845
2846 outrel.r_offset = (sgot->output_section->vma
2847 + sgot->output_offset
2848 + off);
2849 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2850 outrel.r_addend = relocation;
2851 loc = srelgot->contents;
2852 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2853 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2854 ++srelgot->reloc_count;
2855 }
2856
2857 local_got_offsets[r_symndx] |= 1;
2858 }
2859
2860 relocation = sgot->output_offset + off;
2861 }
2862 if ((r_type == R_M32R_GOT16_HI_SLO)
2863 && ((relocation + rel->r_addend) & 0x8000))
2864 rel->r_addend += 0x10000;
2865
2866 break;
2867
2868 case R_M32R_26_PLTREL:
2869 /* Relocation is to the entry for this symbol in the
2870 procedure linkage table. */
2871
2872 /* The native assembler will generate a 26_PLTREL reloc
2873 for a local symbol if you assemble a call from one
2874 section to another when using -K pic. */
2875 if (h == NULL)
2876 break;
2877
2878 if (h->forced_local)
2879 break;
2880
2881 if (h->plt.offset == (bfd_vma) -1)
2882 /* We didn't make a PLT entry for this symbol. This
2883 happens when statically linking PIC code, or when
2884 using -Bsymbolic. */
2885 break;
2886
2887 relocation = (splt->output_section->vma
2888 + splt->output_offset
2889 + h->plt.offset);
2890 break;
2891
2892 case R_M32R_HI16_SLO_RELA:
2893 if ((relocation + rel->r_addend) & 0x8000)
2894 rel->r_addend += 0x10000;
2895 /* Fall through. */
2896
2897 case R_M32R_16_RELA:
2898 case R_M32R_24_RELA:
2899 case R_M32R_32_RELA:
2900 case R_M32R_REL32:
2901 case R_M32R_10_PCREL_RELA:
2902 case R_M32R_18_PCREL_RELA:
2903 case R_M32R_26_PCREL_RELA:
2904 case R_M32R_HI16_ULO_RELA:
2905 case R_M32R_LO16_RELA:
2906 if (info->shared
2907 && r_symndx != 0
2908 && (input_section->flags & SEC_ALLOC) != 0
2909 && (( r_type != R_M32R_10_PCREL_RELA
2910 && r_type != R_M32R_18_PCREL_RELA
2911 && r_type != R_M32R_26_PCREL_RELA
2912 && r_type != R_M32R_REL32)
2913 || (h != NULL
2914 && h->dynindx != -1
2915 && (! info->symbolic
2916 || !h->def_regular))))
2917 {
2918 Elf_Internal_Rela outrel;
2919 bfd_boolean skip, relocate;
2920 bfd_byte *loc;
2921
2922 /* When generating a shared object, these relocations
2923 are copied into the output file to be resolved at run
2924 time. */
2925 if (sreloc == NULL)
2926 {
2927 const char *name;
2928
2929 name = (bfd_elf_string_from_elf_section
2930 (input_bfd,
2931 elf_elfheader (input_bfd)->e_shstrndx,
2932 elf_section_data (input_section)->rel_hdr.sh_name));
2933 if (name == NULL)
2934 return FALSE;
2935
2936 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2937 && strcmp (bfd_get_section_name (input_bfd,
2938 input_section),
2939 name + 5) == 0);
2940
2941 sreloc = bfd_get_section_by_name (dynobj, name);
2942 BFD_ASSERT (sreloc != NULL);
2943 }
2944
2945 skip = FALSE;
2946 relocate = FALSE;
2947
2948 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2949 info,
2950 input_section,
2951 rel->r_offset);
2952 if (outrel.r_offset == (bfd_vma) -1)
2953 skip = TRUE;
2954 else if (outrel.r_offset == (bfd_vma) -2)
2955 skip = relocate = TRUE;
2956 outrel.r_offset += (input_section->output_section->vma
2957 + input_section->output_offset);
2958
2959 if (skip)
2960 memset (&outrel, 0, sizeof outrel);
2961 else if ( r_type == R_M32R_10_PCREL_RELA
2962 || r_type == R_M32R_18_PCREL_RELA
2963 || r_type == R_M32R_26_PCREL_RELA
2964 || r_type == R_M32R_REL32)
2965 {
2966 BFD_ASSERT (h != NULL && h->dynindx != -1);
2967 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2968 outrel.r_addend = rel->r_addend;
2969 }
2970 else
2971 {
2972 /* h->dynindx may be -1 if this symbol was marked to
2973 become local. */
2974 if (h == NULL
2975 || ((info->symbolic || h->dynindx == -1)
2976 && h->def_regular))
2977 {
2978 relocate = TRUE;
2979 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2980 outrel.r_addend = relocation + rel->r_addend;
2981 }
2982 else
2983 {
2984 BFD_ASSERT (h->dynindx != -1);
2985 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2986 outrel.r_addend = relocation + rel->r_addend;
2987 }
2988 }
2989
2990 loc = sreloc->contents;
2991 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2992 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2993 ++sreloc->reloc_count;
2994
2995 /* If this reloc is against an external symbol, we do
2996 not want to fiddle with the addend. Otherwise, we
2997 need to include the symbol value so that it becomes
2998 an addend for the dynamic reloc. */
2999 if (! relocate)
3000 continue;
3001 break;
3002 }
3003 else if (r_type != R_M32R_10_PCREL_RELA)
3004 break;
3005 /* Fall through. */
3006
3007 case (int) R_M32R_10_PCREL :
3008 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
3009 contents, offset,
3010 sec, relocation, addend);
3011 goto check_reloc;
3012
3013 case (int) R_M32R_HI16_SLO :
3014 case (int) R_M32R_HI16_ULO :
3015 {
3016 Elf_Internal_Rela *lorel;
3017
3018 /* We allow an arbitrary number of HI16 relocs before the
3019 LO16 reloc. This permits gcc to emit the HI and LO relocs
3020 itself. */
3021 for (lorel = rel + 1;
3022 (lorel < relend
3023 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
3024 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3025 lorel++)
3026 continue;
3027 if (lorel < relend
3028 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3029 {
3030 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3031 contents, relocation + addend);
3032 r = bfd_reloc_ok;
3033 }
3034 else
3035 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3036 contents, offset,
3037 relocation, addend);
3038 }
3039
3040 goto check_reloc;
3041
3042 case (int) R_M32R_SDA16_RELA:
3043 case (int) R_M32R_SDA16 :
3044 {
3045 const char *name;
3046
3047 BFD_ASSERT (sec != NULL);
3048 name = bfd_get_section_name (abfd, sec);
3049
3050 if ( strcmp (name, ".sdata") == 0
3051 || strcmp (name, ".sbss") == 0
3052 || strcmp (name, ".scommon") == 0)
3053 {
3054 bfd_vma sda_base;
3055 bfd *out_bfd = sec->output_section->owner;
3056
3057 r = m32r_elf_final_sda_base (out_bfd, info,
3058 &errmsg,
3059 &sda_base);
3060 if (r != bfd_reloc_ok)
3061 {
3062 ret = FALSE;
3063 goto check_reloc;
3064 }
3065
3066 /* At this point `relocation' contains the object's
3067 address. */
3068 relocation -= sda_base;
3069 /* Now it contains the offset from _SDA_BASE_. */
3070 }
3071 else
3072 {
3073 (*_bfd_error_handler)
3074 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3075 input_bfd,
3076 sec,
3077 sym_name,
3078 m32r_elf_howto_table[(int) r_type].name);
3079 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3080 ret = FALSE;
3081 continue;
3082 }
3083 }
3084 /* Fall through. */
3085
3086 default : /* OLD_M32R_RELOC */
3087
3088 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3089 contents, offset,
3090 relocation, addend);
3091 goto check_reloc;
3092 }
3093
3094 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3095 contents, rel->r_offset,
3096 relocation, rel->r_addend);
3097
3098 }
3099
3100 check_reloc:
3101
3102 if (r != bfd_reloc_ok)
3103 {
3104 /* FIXME: This should be generic enough to go in a utility. */
3105 const char *name;
3106
3107 if (h != NULL)
3108 name = h->root.root.string;
3109 else
3110 {
3111 name = (bfd_elf_string_from_elf_section
3112 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3113 if (name == NULL || *name == '\0')
3114 name = bfd_section_name (input_bfd, sec);
3115 }
3116
3117 if (errmsg != NULL)
3118 goto common_error;
3119
3120 switch (r)
3121 {
3122 case bfd_reloc_overflow:
3123 if (! ((*info->callbacks->reloc_overflow)
3124 (info, (h ? &h->root : NULL), name, howto->name,
3125 (bfd_vma) 0, input_bfd, input_section, offset)))
3126 return FALSE;
3127 break;
3128
3129 case bfd_reloc_undefined:
3130 if (! ((*info->callbacks->undefined_symbol)
3131 (info, name, input_bfd, input_section,
3132 offset, TRUE)))
3133 return FALSE;
3134 break;
3135
3136 case bfd_reloc_outofrange:
3137 errmsg = _("internal error: out of range error");
3138 goto common_error;
3139
3140 case bfd_reloc_notsupported:
3141 errmsg = _("internal error: unsupported relocation error");
3142 goto common_error;
3143
3144 case bfd_reloc_dangerous:
3145 errmsg = _("internal error: dangerous error");
3146 goto common_error;
3147
3148 default:
3149 errmsg = _("internal error: unknown error");
3150 /* fall through */
3151
3152 common_error:
3153 if (!((*info->callbacks->warning)
3154 (info, errmsg, name, input_bfd, input_section,
3155 offset)))
3156 return FALSE;
3157 break;
3158 }
3159 }
3160 }
3161
3162 return ret;
3163 }
3164
3165 /* Finish up dynamic symbol handling. We set the contents of various
3166 dynamic sections here. */
3167
3168 static bfd_boolean
3169 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3170 struct bfd_link_info *info,
3171 struct elf_link_hash_entry *h,
3172 Elf_Internal_Sym *sym)
3173 {
3174 struct elf_m32r_link_hash_table *htab;
3175 bfd *dynobj;
3176 bfd_byte *loc;
3177
3178 #ifdef DEBUG_PIC
3179 printf ("m32r_elf_finish_dynamic_symbol()\n");
3180 #endif
3181
3182 htab = m32r_elf_hash_table (info);
3183 dynobj = htab->root.dynobj;
3184
3185 if (h->plt.offset != (bfd_vma) -1)
3186 {
3187 asection *splt;
3188 asection *sgot;
3189 asection *srela;
3190
3191 bfd_vma plt_index;
3192 bfd_vma got_offset;
3193 Elf_Internal_Rela rela;
3194
3195 /* This symbol has an entry in the procedure linkage table. Set
3196 it up. */
3197
3198 BFD_ASSERT (h->dynindx != -1);
3199
3200 splt = htab->splt;
3201 sgot = htab->sgotplt;
3202 srela = htab->srelplt;
3203 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3204
3205 /* Get the index in the procedure linkage table which
3206 corresponds to this symbol. This is the index of this symbol
3207 in all the symbols for which we are making plt entries. The
3208 first entry in the procedure linkage table is reserved. */
3209 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3210
3211 /* Get the offset into the .got table of the entry that
3212 corresponds to this function. Each .got entry is 4 bytes.
3213 The first three are reserved. */
3214 got_offset = (plt_index + 3) * 4;
3215
3216 /* Fill in the entry in the procedure linkage table. */
3217 if (! info->shared)
3218 {
3219 bfd_put_32 (output_bfd,
3220 (PLT_ENTRY_WORD0b
3221 + (((sgot->output_section->vma
3222 + sgot->output_offset
3223 + got_offset) >> 16) & 0xffff)),
3224 splt->contents + h->plt.offset);
3225 bfd_put_32 (output_bfd,
3226 (PLT_ENTRY_WORD1b
3227 + ((sgot->output_section->vma
3228 + sgot->output_offset
3229 + got_offset) & 0xffff)),
3230 splt->contents + h->plt.offset + 4);
3231 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3232 splt->contents + h->plt.offset + 8);
3233 bfd_put_32 (output_bfd,
3234 (PLT_ENTRY_WORD3
3235 + plt_index * sizeof (Elf32_External_Rela)),
3236 splt->contents + h->plt.offset + 12);
3237 bfd_put_32 (output_bfd,
3238 (PLT_ENTRY_WORD4
3239 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3240 splt->contents + h->plt.offset + 16);
3241 }
3242 else
3243 {
3244 bfd_put_32 (output_bfd,
3245 PLT_ENTRY_WORD0 + got_offset,
3246 splt->contents + h->plt.offset);
3247 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3248 splt->contents + h->plt.offset + 4);
3249 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3250 splt->contents + h->plt.offset + 8);
3251 bfd_put_32 (output_bfd,
3252 (PLT_ENTRY_WORD3
3253 + plt_index * sizeof (Elf32_External_Rela)),
3254 splt->contents + h->plt.offset + 12);
3255 bfd_put_32 (output_bfd,
3256 (PLT_ENTRY_WORD4
3257 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3258 splt->contents + h->plt.offset + 16);
3259 }
3260
3261 /* Fill in the entry in the global offset table. */
3262 bfd_put_32 (output_bfd,
3263 (splt->output_section->vma
3264 + splt->output_offset
3265 + h->plt.offset
3266 + 12), /* same offset */
3267 sgot->contents + got_offset);
3268
3269 /* Fill in the entry in the .rela.plt section. */
3270 rela.r_offset = (sgot->output_section->vma
3271 + sgot->output_offset
3272 + got_offset);
3273 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3274 rela.r_addend = 0;
3275 loc = srela->contents;
3276 loc += plt_index * sizeof (Elf32_External_Rela);
3277 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3278
3279 if (!h->def_regular)
3280 {
3281 /* Mark the symbol as undefined, rather than as defined in
3282 the .plt section. Leave the value alone. */
3283 sym->st_shndx = SHN_UNDEF;
3284 }
3285 }
3286
3287 if (h->got.offset != (bfd_vma) -1)
3288 {
3289 asection *sgot;
3290 asection *srela;
3291 Elf_Internal_Rela rela;
3292
3293 /* This symbol has an entry in the global offset table. Set it
3294 up. */
3295
3296 sgot = htab->sgot;
3297 srela = htab->srelgot;
3298 BFD_ASSERT (sgot != NULL && srela != NULL);
3299
3300 rela.r_offset = (sgot->output_section->vma
3301 + sgot->output_offset
3302 + (h->got.offset &~ 1));
3303
3304 /* If this is a -Bsymbolic link, and the symbol is defined
3305 locally, we just want to emit a RELATIVE reloc. Likewise if
3306 the symbol was forced to be local because of a version file.
3307 The entry in the global offset table will already have been
3308 initialized in the relocate_section function. */
3309 if (info->shared
3310 && (info->symbolic
3311 || h->dynindx == -1
3312 || h->forced_local)
3313 && h->def_regular)
3314 {
3315 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3316 rela.r_addend = (h->root.u.def.value
3317 + h->root.u.def.section->output_section->vma
3318 + h->root.u.def.section->output_offset);
3319 }
3320 else
3321 {
3322 BFD_ASSERT ((h->got.offset & 1) == 0);
3323 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3324 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3325 rela.r_addend = 0;
3326 }
3327
3328 loc = srela->contents;
3329 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3330 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3331 ++srela->reloc_count;
3332 }
3333
3334 if (h->needs_copy)
3335 {
3336 asection *s;
3337 Elf_Internal_Rela rela;
3338
3339 /* This symbols needs a copy reloc. Set it up. */
3340
3341 BFD_ASSERT (h->dynindx != -1
3342 && (h->root.type == bfd_link_hash_defined
3343 || h->root.type == bfd_link_hash_defweak));
3344
3345 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3346 ".rela.bss");
3347 BFD_ASSERT (s != NULL);
3348
3349 rela.r_offset = (h->root.u.def.value
3350 + h->root.u.def.section->output_section->vma
3351 + h->root.u.def.section->output_offset);
3352 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3353 rela.r_addend = 0;
3354 loc = s->contents;
3355 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3356 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3357 ++s->reloc_count;
3358 }
3359
3360 /* Mark some specially defined symbols as absolute. */
3361 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3362 || h == htab->root.hgot)
3363 sym->st_shndx = SHN_ABS;
3364
3365 return TRUE;
3366 }
3367
3368
3369 /* Finish up the dynamic sections. */
3370
3371 static bfd_boolean
3372 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3373 struct bfd_link_info *info)
3374 {
3375 struct elf_m32r_link_hash_table *htab;
3376 bfd *dynobj;
3377 asection *sdyn;
3378 asection *sgot;
3379
3380 #ifdef DEBUG_PIC
3381 printf ("m32r_elf_finish_dynamic_sections()\n");
3382 #endif
3383
3384 htab = m32r_elf_hash_table (info);
3385 dynobj = htab->root.dynobj;
3386
3387 sgot = htab->sgotplt;
3388 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3389
3390 if (htab->root.dynamic_sections_created)
3391 {
3392 asection *splt;
3393 Elf32_External_Dyn *dyncon, *dynconend;
3394
3395 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3396
3397 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3398 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3399
3400 for (; dyncon < dynconend; dyncon++)
3401 {
3402 Elf_Internal_Dyn dyn;
3403 const char *name;
3404 asection *s;
3405
3406 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3407
3408 switch (dyn.d_tag)
3409 {
3410 default:
3411 break;
3412
3413 case DT_PLTGOT:
3414 name = ".got";
3415 s = htab->sgot->output_section;
3416 goto get_vma;
3417 case DT_JMPREL:
3418 name = ".rela.plt";
3419 s = htab->srelplt->output_section;
3420 get_vma:
3421 BFD_ASSERT (s != NULL);
3422 dyn.d_un.d_ptr = s->vma;
3423 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3424 break;
3425
3426 case DT_PLTRELSZ:
3427 s = htab->srelplt->output_section;
3428 BFD_ASSERT (s != NULL);
3429 dyn.d_un.d_val = s->size;
3430 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3431 break;
3432
3433 case DT_RELASZ:
3434 /* My reading of the SVR4 ABI indicates that the
3435 procedure linkage table relocs (DT_JMPREL) should be
3436 included in the overall relocs (DT_RELA). This is
3437 what Solaris does. However, UnixWare can not handle
3438 that case. Therefore, we override the DT_RELASZ entry
3439 here to make it not include the JMPREL relocs. Since
3440 the linker script arranges for .rela.plt to follow all
3441 other relocation sections, we don't have to worry
3442 about changing the DT_RELA entry. */
3443 if (htab->srelplt != NULL)
3444 {
3445 s = htab->srelplt->output_section;
3446 dyn.d_un.d_val -= s->size;
3447 }
3448 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3449 break;
3450 }
3451 }
3452
3453 /* Fill in the first entry in the procedure linkage table. */
3454 splt = htab->splt;
3455 if (splt && splt->size > 0)
3456 {
3457 if (info->shared)
3458 {
3459 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3460 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3461 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3462 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3463 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3464 }
3465 else
3466 {
3467 unsigned long addr;
3468 /* addr = .got + 4 */
3469 addr = sgot->output_section->vma + sgot->output_offset + 4;
3470 bfd_put_32 (output_bfd,
3471 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3472 splt->contents);
3473 bfd_put_32 (output_bfd,
3474 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3475 splt->contents + 4);
3476 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3477 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3478 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3479 }
3480
3481 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3482 PLT_ENTRY_SIZE;
3483 }
3484 }
3485
3486 /* Fill in the first three entries in the global offset table. */
3487 if (sgot && sgot->size > 0)
3488 {
3489 if (sdyn == NULL)
3490 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3491 else
3492 bfd_put_32 (output_bfd,
3493 sdyn->output_section->vma + sdyn->output_offset,
3494 sgot->contents);
3495 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3496 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3497
3498 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3499 }
3500
3501 return TRUE;
3502 }
3503
3504 \f
3505 /* Set the right machine number. */
3506
3507 static bfd_boolean
3508 m32r_elf_object_p (bfd *abfd)
3509 {
3510 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3511 {
3512 default:
3513 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3514 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3515 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3516 }
3517 return TRUE;
3518 }
3519
3520 /* Store the machine number in the flags field. */
3521
3522 static void
3523 m32r_elf_final_write_processing (bfd *abfd,
3524 bfd_boolean linker ATTRIBUTE_UNUSED)
3525 {
3526 unsigned long val;
3527
3528 switch (bfd_get_mach (abfd))
3529 {
3530 default:
3531 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3532 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3533 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3534 }
3535
3536 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3537 elf_elfheader (abfd)->e_flags |= val;
3538 }
3539
3540 /* Function to keep M32R specific file flags. */
3541
3542 static bfd_boolean
3543 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3544 {
3545 BFD_ASSERT (!elf_flags_init (abfd)
3546 || elf_elfheader (abfd)->e_flags == flags);
3547
3548 elf_elfheader (abfd)->e_flags = flags;
3549 elf_flags_init (abfd) = TRUE;
3550 return TRUE;
3551 }
3552
3553 /* Merge backend specific data from an object file to the output
3554 object file when linking. */
3555
3556 static bfd_boolean
3557 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3558 {
3559 flagword out_flags;
3560 flagword in_flags;
3561
3562 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3563 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3564 return TRUE;
3565
3566 in_flags = elf_elfheader (ibfd)->e_flags;
3567 out_flags = elf_elfheader (obfd)->e_flags;
3568
3569 if (! elf_flags_init (obfd))
3570 {
3571 /* If the input is the default architecture then do not
3572 bother setting the flags for the output architecture,
3573 instead allow future merges to do this. If no future
3574 merges ever set these flags then they will retain their
3575 unitialised values, which surprise surprise, correspond
3576 to the default values. */
3577 if (bfd_get_arch_info (ibfd)->the_default)
3578 return TRUE;
3579
3580 elf_flags_init (obfd) = TRUE;
3581 elf_elfheader (obfd)->e_flags = in_flags;
3582
3583 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3584 && bfd_get_arch_info (obfd)->the_default)
3585 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3586 bfd_get_mach (ibfd));
3587
3588 return TRUE;
3589 }
3590
3591 /* Check flag compatibility. */
3592 if (in_flags == out_flags)
3593 return TRUE;
3594
3595 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3596 {
3597 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3598 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3599 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3600 {
3601 (*_bfd_error_handler)
3602 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3603
3604 bfd_set_error (bfd_error_bad_value);
3605 return FALSE;
3606 }
3607 }
3608
3609 return TRUE;
3610 }
3611
3612 /* Display the flags field. */
3613
3614 static bfd_boolean
3615 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3616 {
3617 FILE * file = (FILE *) ptr;
3618
3619 BFD_ASSERT (abfd != NULL && ptr != NULL);
3620
3621 _bfd_elf_print_private_bfd_data (abfd, ptr);
3622
3623 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3624
3625 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3626 {
3627 default:
3628 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3629 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3630 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3631 }
3632
3633 fputc ('\n', file);
3634
3635 return TRUE;
3636 }
3637
3638 static asection *
3639 m32r_elf_gc_mark_hook (asection *sec,
3640 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3641 Elf_Internal_Rela *rel,
3642 struct elf_link_hash_entry *h,
3643 Elf_Internal_Sym *sym)
3644 {
3645 if (h != NULL)
3646 {
3647 switch (ELF32_R_TYPE (rel->r_info))
3648 {
3649 case R_M32R_GNU_VTINHERIT:
3650 case R_M32R_GNU_VTENTRY:
3651 case R_M32R_RELA_GNU_VTINHERIT:
3652 case R_M32R_RELA_GNU_VTENTRY:
3653 break;
3654
3655 default:
3656 switch (h->root.type)
3657 {
3658 case bfd_link_hash_defined:
3659 case bfd_link_hash_defweak:
3660 return h->root.u.def.section;
3661
3662 case bfd_link_hash_common:
3663 return h->root.u.c.p->section;
3664
3665 default:
3666 break;
3667 }
3668 }
3669 }
3670 else
3671 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3672
3673 return NULL;
3674 }
3675
3676 static bfd_boolean
3677 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3678 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3679 asection *sec ATTRIBUTE_UNUSED,
3680 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3681 {
3682 /* Update the got entry reference counts for the section being removed. */
3683 Elf_Internal_Shdr *symtab_hdr;
3684 struct elf_link_hash_entry **sym_hashes;
3685 bfd_signed_vma *local_got_refcounts;
3686 const Elf_Internal_Rela *rel, *relend;
3687
3688 elf_section_data (sec)->local_dynrel = NULL;
3689
3690 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3691 sym_hashes = elf_sym_hashes (abfd);
3692 local_got_refcounts = elf_local_got_refcounts (abfd);
3693
3694 relend = relocs + sec->reloc_count;
3695 for (rel = relocs; rel < relend; rel++)
3696 {
3697 unsigned long r_symndx;
3698 struct elf_link_hash_entry *h = NULL;
3699
3700 r_symndx = ELF32_R_SYM (rel->r_info);
3701 if (r_symndx >= symtab_hdr->sh_info)
3702 {
3703 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3704 while (h->root.type == bfd_link_hash_indirect
3705 || h->root.type == bfd_link_hash_warning)
3706 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3707 }
3708
3709 switch (ELF32_R_TYPE (rel->r_info))
3710 {
3711 case R_M32R_GOT16_HI_ULO:
3712 case R_M32R_GOT16_HI_SLO:
3713 case R_M32R_GOT16_LO:
3714 case R_M32R_GOTOFF:
3715 case R_M32R_GOTOFF_HI_ULO:
3716 case R_M32R_GOTOFF_HI_SLO:
3717 case R_M32R_GOTOFF_LO:
3718 case R_M32R_GOT24:
3719 case R_M32R_GOTPC_HI_ULO:
3720 case R_M32R_GOTPC_HI_SLO:
3721 case R_M32R_GOTPC_LO:
3722 case R_M32R_GOTPC24:
3723 if (h != NULL)
3724 {
3725 if (h->got.refcount > 0)
3726 h->got.refcount--;
3727 }
3728 else
3729 {
3730 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3731 local_got_refcounts[r_symndx]--;
3732 }
3733 break;
3734
3735 case R_M32R_16_RELA:
3736 case R_M32R_24_RELA:
3737 case R_M32R_32_RELA:
3738 case R_M32R_REL32:
3739 case R_M32R_HI16_ULO_RELA:
3740 case R_M32R_HI16_SLO_RELA:
3741 case R_M32R_LO16_RELA:
3742 case R_M32R_SDA16_RELA:
3743 case R_M32R_10_PCREL_RELA:
3744 case R_M32R_18_PCREL_RELA:
3745 case R_M32R_26_PCREL_RELA:
3746 if (h != NULL)
3747 {
3748 struct elf_m32r_link_hash_entry *eh;
3749 struct elf_m32r_dyn_relocs **pp;
3750 struct elf_m32r_dyn_relocs *p;
3751
3752 if (!info->shared && h->plt.refcount > 0)
3753 h->plt.refcount -= 1;
3754
3755 eh = (struct elf_m32r_link_hash_entry *) h;
3756
3757 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3758 if (p->sec == sec)
3759 {
3760 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3761 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3762 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3763 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3764 p->pc_count -= 1;
3765 p->count -= 1;
3766 if (p->count == 0)
3767 *pp = p->next;
3768 break;
3769 }
3770 }
3771 break;
3772
3773 case R_M32R_26_PLTREL:
3774 if (h != NULL)
3775 {
3776 if (h->plt.refcount > 0)
3777 h->plt.refcount--;
3778 }
3779 break;
3780
3781 default:
3782 break;
3783 }
3784 }
3785
3786 return TRUE;
3787 }
3788
3789 /* Look through the relocs for a section during the first phase.
3790 Since we don't do .gots or .plts, we just need to consider the
3791 virtual table relocs for gc. */
3792
3793 static bfd_boolean
3794 m32r_elf_check_relocs (bfd *abfd,
3795 struct bfd_link_info *info,
3796 asection *sec,
3797 const Elf_Internal_Rela *relocs)
3798 {
3799 Elf_Internal_Shdr *symtab_hdr;
3800 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3801 const Elf_Internal_Rela *rel;
3802 const Elf_Internal_Rela *rel_end;
3803 struct elf_m32r_link_hash_table *htab;
3804 bfd *dynobj;
3805 bfd_vma *local_got_offsets;
3806 asection *sgot, *srelgot, *sreloc;
3807
3808 if (info->relocatable)
3809 return TRUE;
3810
3811 sgot = srelgot = sreloc = NULL;
3812
3813 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3814 sym_hashes = elf_sym_hashes (abfd);
3815 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3816 if (!elf_bad_symtab (abfd))
3817 sym_hashes_end -= symtab_hdr->sh_info;
3818
3819 htab = m32r_elf_hash_table (info);
3820 dynobj = htab->root.dynobj;
3821 local_got_offsets = elf_local_got_offsets (abfd);
3822
3823 rel_end = relocs + sec->reloc_count;
3824 for (rel = relocs; rel < rel_end; rel++)
3825 {
3826 int r_type;
3827 struct elf_link_hash_entry *h;
3828 unsigned long r_symndx;
3829
3830 r_symndx = ELF32_R_SYM (rel->r_info);
3831 r_type = ELF32_R_TYPE (rel->r_info);
3832 if (r_symndx < symtab_hdr->sh_info)
3833 h = NULL;
3834 else
3835 {
3836 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3837 while (h->root.type == bfd_link_hash_indirect
3838 || h->root.type == bfd_link_hash_warning)
3839 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3840 }
3841
3842 /* Some relocs require a global offset table. */
3843 if (htab->sgot == NULL)
3844 {
3845 switch (r_type)
3846 {
3847 case R_M32R_GOT16_HI_ULO:
3848 case R_M32R_GOT16_HI_SLO:
3849 case R_M32R_GOTOFF:
3850 case R_M32R_GOTOFF_HI_ULO:
3851 case R_M32R_GOTOFF_HI_SLO:
3852 case R_M32R_GOTOFF_LO:
3853 case R_M32R_GOT16_LO:
3854 case R_M32R_GOTPC24:
3855 case R_M32R_GOTPC_HI_ULO:
3856 case R_M32R_GOTPC_HI_SLO:
3857 case R_M32R_GOTPC_LO:
3858 case R_M32R_GOT24:
3859 if (dynobj == NULL)
3860 htab->root.dynobj = dynobj = abfd;
3861 if (! create_got_section (dynobj, info))
3862 return FALSE;
3863 break;
3864
3865 default:
3866 break;
3867 }
3868 }
3869
3870 switch (r_type)
3871 {
3872 case R_M32R_GOT16_HI_ULO:
3873 case R_M32R_GOT16_HI_SLO:
3874 case R_M32R_GOT16_LO:
3875 case R_M32R_GOT24:
3876
3877 if (h != NULL)
3878 h->got.refcount += 1;
3879 else
3880 {
3881 bfd_signed_vma *local_got_refcounts;
3882
3883 /* This is a global offset table entry for a local
3884 symbol. */
3885 local_got_refcounts = elf_local_got_refcounts (abfd);
3886 if (local_got_refcounts == NULL)
3887 {
3888 bfd_size_type size;
3889
3890 size = symtab_hdr->sh_info;
3891 size *= sizeof (bfd_signed_vma);
3892 local_got_refcounts = bfd_zalloc (abfd, size);
3893 if (local_got_refcounts == NULL)
3894 return FALSE;
3895 elf_local_got_refcounts (abfd) = local_got_refcounts;
3896 }
3897 local_got_refcounts[r_symndx] += 1;
3898 }
3899 break;
3900
3901 case R_M32R_26_PLTREL:
3902 /* This symbol requires a procedure linkage table entry. We
3903 actually build the entry in adjust_dynamic_symbol,
3904 because this might be a case of linking PIC code without
3905 linking in any dynamic objects, in which case we don't
3906 need to generate a procedure linkage table after all. */
3907
3908 /* If this is a local symbol, we resolve it directly without
3909 creating a procedure linkage table entry. */
3910 if (h == NULL)
3911 continue;
3912
3913 if (h->forced_local)
3914 break;
3915
3916 h->needs_plt = 1;
3917 h->plt.refcount += 1;
3918 break;
3919
3920 case R_M32R_16_RELA:
3921 case R_M32R_24_RELA:
3922 case R_M32R_32_RELA:
3923 case R_M32R_REL32:
3924 case R_M32R_HI16_ULO_RELA:
3925 case R_M32R_HI16_SLO_RELA:
3926 case R_M32R_LO16_RELA:
3927 case R_M32R_SDA16_RELA:
3928 case R_M32R_10_PCREL_RELA:
3929 case R_M32R_18_PCREL_RELA:
3930 case R_M32R_26_PCREL_RELA:
3931
3932 if (h != NULL && !info->shared)
3933 {
3934 h->non_got_ref = 1;
3935 h->plt.refcount += 1;
3936 }
3937
3938 /* If we are creating a shared library, and this is a reloc
3939 against a global symbol, or a non PC relative reloc
3940 against a local symbol, then we need to copy the reloc
3941 into the shared library. However, if we are linking with
3942 -Bsymbolic, we do not need to copy a reloc against a
3943 global symbol which is defined in an object we are
3944 including in the link (i.e., DEF_REGULAR is set). At
3945 this point we have not seen all the input files, so it is
3946 possible that DEF_REGULAR is not set now but will be set
3947 later (it is never cleared). We account for that
3948 possibility below by storing information in the
3949 dyn_relocs field of the hash table entry. A similar
3950 situation occurs when creating shared libraries and symbol
3951 visibility changes render the symbol local.
3952
3953 If on the other hand, we are creating an executable, we
3954 may need to keep relocations for symbols satisfied by a
3955 dynamic library if we manage to avoid copy relocs for the
3956 symbol. */
3957 if ((info->shared
3958 && (sec->flags & SEC_ALLOC) != 0
3959 && (( r_type != R_M32R_26_PCREL_RELA
3960 && r_type != R_M32R_18_PCREL_RELA
3961 && r_type != R_M32R_10_PCREL_RELA
3962 && r_type != R_M32R_REL32)
3963 || (h != NULL
3964 && (! info->symbolic
3965 || h->root.type == bfd_link_hash_defweak
3966 || !h->def_regular))))
3967 || (!info->shared
3968 && (sec->flags & SEC_ALLOC) != 0
3969 && h != NULL
3970 && (h->root.type == bfd_link_hash_defweak
3971 || !h->def_regular)))
3972 {
3973 struct elf_m32r_dyn_relocs *p;
3974 struct elf_m32r_dyn_relocs **head;
3975
3976 if (dynobj == NULL)
3977 htab->root.dynobj = dynobj = abfd;
3978
3979 /* When creating a shared object, we must copy these
3980 relocs into the output file. We create a reloc
3981 section in dynobj and make room for the reloc. */
3982 if (sreloc == NULL)
3983 {
3984 const char *name;
3985
3986 name = (bfd_elf_string_from_elf_section
3987 (abfd,
3988 elf_elfheader (abfd)->e_shstrndx,
3989 elf_section_data (sec)->rel_hdr.sh_name));
3990 if (name == NULL)
3991 return FALSE;
3992
3993 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3994 && strcmp (bfd_get_section_name (abfd, sec),
3995 name + 5) == 0);
3996
3997 sreloc = bfd_get_section_by_name (dynobj, name);
3998 if (sreloc == NULL)
3999 {
4000 flagword flags;
4001
4002 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4003 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4004 if ((sec->flags & SEC_ALLOC) != 0)
4005 flags |= SEC_ALLOC | SEC_LOAD;
4006 sreloc = bfd_make_section_with_flags (dynobj,
4007 name,
4008 flags);
4009 if (sreloc == NULL
4010 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
4011 return FALSE;
4012 }
4013 elf_section_data (sec)->sreloc = sreloc;
4014 }
4015
4016 /* If this is a global symbol, we count the number of
4017 relocations we need for this symbol. */
4018 if (h != NULL)
4019 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
4020 else
4021 {
4022 asection *s;
4023 void *vpp;
4024
4025 /* Track dynamic relocs needed for local syms too. */
4026 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4027 sec, r_symndx);
4028 if (s == NULL)
4029 return FALSE;
4030
4031 vpp = &elf_section_data (s)->local_dynrel;
4032 head = (struct elf_m32r_dyn_relocs **) vpp;
4033 }
4034
4035 p = *head;
4036 if (p == NULL || p->sec != sec)
4037 {
4038 bfd_size_type amt = sizeof (*p);
4039
4040 p = bfd_alloc (dynobj, amt);
4041 if (p == NULL)
4042 return FALSE;
4043 p->next = *head;
4044 *head = p;
4045 p->sec = sec;
4046 p->count = 0;
4047 p->pc_count = 0;
4048 }
4049
4050 p->count += 1;
4051 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4052 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
4053 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
4054 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
4055 p->pc_count += 1;
4056 }
4057 break;
4058
4059 /* This relocation describes the C++ object vtable hierarchy.
4060 Reconstruct it for later use during GC. */
4061 case R_M32R_RELA_GNU_VTINHERIT:
4062 case R_M32R_GNU_VTINHERIT:
4063 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4064 return FALSE;
4065 break;
4066
4067 /* This relocation describes which C++ vtable entries are actually
4068 used. Record for later use during GC. */
4069 case R_M32R_GNU_VTENTRY:
4070 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4071 return FALSE;
4072 break;
4073 case R_M32R_RELA_GNU_VTENTRY:
4074 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4075 return FALSE;
4076 break;
4077 }
4078 }
4079
4080 return TRUE;
4081 }
4082
4083 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4084 {
4085 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4086 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4087 { NULL, 0, 0, 0, 0 }
4088 };
4089
4090 static bfd_boolean
4091 m32r_elf_fake_sections (bfd *abfd,
4092 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4093 asection *sec)
4094 {
4095 const char *name;
4096
4097 name = bfd_get_section_name (abfd, sec);
4098
4099 /* The generic elf_fake_sections will set up REL_HDR using the
4100 default kind of relocations. But, we may actually need both
4101 kinds of relocations, so we set up the second header here.
4102
4103 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4104 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4105 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4106 of the resulting empty .rela.<section> sections starts with
4107 sh_offset == object size, and ld doesn't allow that. While the check
4108 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4109 avoided by not emitting those useless sections in the first place. */
4110 if ((sec->flags & SEC_RELOC) != 0)
4111 {
4112 struct bfd_elf_section_data *esd;
4113 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4114
4115 esd = elf_section_data (sec);
4116 BFD_ASSERT (esd->rel_hdr2 == NULL);
4117 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4118 if (!esd->rel_hdr2)
4119 return FALSE;
4120 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4121 !sec->use_rela_p);
4122 }
4123
4124 return TRUE;
4125 }
4126
4127 static enum elf_reloc_type_class
4128 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4129 {
4130 switch ((int) ELF32_R_TYPE (rela->r_info))
4131 {
4132 case R_M32R_RELATIVE: return reloc_class_relative;
4133 case R_M32R_JMP_SLOT: return reloc_class_plt;
4134 case R_M32R_COPY: return reloc_class_copy;
4135 default: return reloc_class_normal;
4136 }
4137 }
4138 \f
4139 #define ELF_ARCH bfd_arch_m32r
4140 #define ELF_MACHINE_CODE EM_M32R
4141 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4142 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4143
4144 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4145 #define TARGET_BIG_NAME "elf32-m32r"
4146 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4147 #define TARGET_LITTLE_NAME "elf32-m32rle"
4148
4149 #define elf_info_to_howto m32r_info_to_howto
4150 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4151 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4152 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4153 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4154 #define elf_backend_relocate_section m32r_elf_relocate_section
4155 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4156 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4157 #define elf_backend_check_relocs m32r_elf_check_relocs
4158
4159 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4160 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4161 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4162 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4163 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4164 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4165 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4166 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4167
4168 #define elf_backend_can_gc_sections 1
4169 /*#if !USE_REL
4170 #define elf_backend_rela_normal 1
4171 #endif*/
4172 #define elf_backend_can_refcount 1
4173 #define elf_backend_want_got_plt 1
4174 #define elf_backend_plt_readonly 1
4175 #define elf_backend_want_plt_sym 0
4176 #define elf_backend_got_header_size 12
4177
4178 #define elf_backend_may_use_rel_p 1
4179 #ifdef USE_M32R_OLD_RELOC
4180 #define elf_backend_default_use_rela_p 0
4181 #define elf_backend_may_use_rela_p 0
4182 #else
4183 #define elf_backend_default_use_rela_p 1
4184 #define elf_backend_may_use_rela_p 1
4185 #define elf_backend_fake_sections m32r_elf_fake_sections
4186 #endif
4187
4188 #define elf_backend_object_p m32r_elf_object_p
4189 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4190 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4191 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4192 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4193 #define elf_backend_special_sections m32r_elf_special_sections
4194
4195 #include "elf32-target.h"
4196
4197 #undef ELF_MAXPAGESIZE
4198 #define ELF_MAXPAGESIZE 0x1000
4199
4200 #undef TARGET_BIG_SYM
4201 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4202 #undef TARGET_BIG_NAME
4203 #define TARGET_BIG_NAME "elf32-m32r-linux"
4204 #undef TARGET_LITTLE_SYM
4205 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4206 #undef TARGET_LITTLE_NAME
4207 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4208 #undef elf32_bed
4209 #define elf32_bed elf32_m32r_lin_bed
4210
4211 #include "elf32-target.h"
4212
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