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