* elf-m10300.c (_bfd_mn10300_elf_finish_dynamic_symbol): Use the
[binutils-gdb.git] / bfd / elf32-m32r.c
1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006 Free Software Foundation, Inc.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
20
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/m32r.h"
26
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
29
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
33 to work with. */
34 /* #define USE_REL 1
35
36 #ifndef USE_REL
37 #define USE_REL 0
38 #endif */
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
40
41 /* Functions for the M32R ELF linker. */
42
43 /* The name of the dynamic interpreter. This is put in the .interp
44 section. */
45
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
47
48 /* The nop opcode we use. */
49
50 #define M32R_NOP 0x7000f000
51
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
53
54 /* The size in bytes of an entry in the procedure linkage table. */
55
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
58
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
62
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
68
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
74
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
82
83
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
85
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 reloc_howto_type *howto,
89 asection *input_section,
90 bfd_byte *data,
91 bfd_vma offset,
92 asection *symbol_section ATTRIBUTE_UNUSED,
93 bfd_vma symbol_value,
94 bfd_vma addend)
95 {
96 bfd_signed_vma relocation;
97 unsigned long x;
98 bfd_reloc_status_type status;
99
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
103
104 relocation = symbol_value + addend;
105 /* Make it pc relative. */
106 relocation -= (input_section->output_section->vma
107 + input_section->output_offset);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation -= (offset & -(bfd_vma) 4);
111
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
114 else
115 status = bfd_reloc_ok;
116
117 x = bfd_get_16 (abfd, data + offset);
118 relocation >>= howto->rightshift;
119 relocation <<= howto->bitpos;
120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
122
123 return status;
124 }
125
126 /* Handle the R_M32R_10_PCREL reloc. */
127
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd * abfd,
130 arelent * reloc_entry,
131 asymbol * symbol,
132 void * data,
133 asection * input_section,
134 bfd * output_bfd,
135 char ** error_message ATTRIBUTE_UNUSED)
136 {
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd != NULL
139 && (symbol->flags & BSF_SECTION_SYM) == 0
140 && (! reloc_entry->howto->partial_inplace
141 || reloc_entry->addend == 0))
142 {
143 reloc_entry->address += input_section->output_offset;
144 return bfd_reloc_ok;
145 }
146
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
150
151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
152 input_section,
153 data, reloc_entry->address,
154 symbol->section,
155 (symbol->value
156 + symbol->section->output_section->vma
157 + symbol->section->output_offset),
158 reloc_entry->addend);
159 }
160
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
163
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd *input_bfd,
166 arelent *reloc_entry,
167 asymbol *symbol,
168 void * data,
169 asection *input_section,
170 bfd *output_bfd,
171 char **error_message ATTRIBUTE_UNUSED)
172 {
173 bfd_reloc_status_type ret;
174 bfd_vma relocation;
175 bfd_byte *inplace_address;
176
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd != NULL
181 && (symbol->flags & BSF_SECTION_SYM) == 0
182 && reloc_entry->addend == 0)
183 {
184 reloc_entry->address += input_section->output_offset;
185 return bfd_reloc_ok;
186 }
187
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
193
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196 return bfd_reloc_outofrange;
197
198 ret = bfd_reloc_ok;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
202
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
205 relocation = 0;
206 else
207 relocation = symbol->value;
208
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
211 {
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
214 }
215
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
218
219 #define DOIT(x) \
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
223
224 switch (reloc_entry->howto->size)
225 {
226 case 1:
227 {
228 short x = bfd_get_16 (input_bfd, inplace_address);
229 DOIT (x);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
231 }
232 break;
233 case 2:
234 {
235 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
236 DOIT (x);
237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
238 }
239 break;
240 default:
241 BFD_ASSERT (0);
242 }
243
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
246
247 return ret;
248 }
249
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
255
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 arelent *reloc_entry,
259 asymbol *symbol,
260 void * data ATTRIBUTE_UNUSED,
261 asection *input_section,
262 bfd *output_bfd,
263 char **error_message ATTRIBUTE_UNUSED)
264 {
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd != NULL
267 && (symbol->flags & BSF_SECTION_SYM) == 0
268 && (! reloc_entry->howto->partial_inplace
269 || reloc_entry->addend == 0))
270 {
271 reloc_entry->address += input_section->output_offset;
272 return bfd_reloc_ok;
273 }
274
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
278
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
281 abort ();
282 }
283
284 \f
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
300
301 struct m32r_hi16
302 {
303 struct m32r_hi16 *next;
304 bfd_byte *addr;
305 bfd_vma addend;
306 };
307
308 /* FIXME: This should not be a static variable. */
309
310 static struct m32r_hi16 *m32r_hi16_list;
311
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 arelent *reloc_entry,
315 asymbol *symbol,
316 void * data,
317 asection *input_section,
318 bfd *output_bfd,
319 char **error_message ATTRIBUTE_UNUSED)
320 {
321 bfd_reloc_status_type ret;
322 bfd_vma relocation;
323 struct m32r_hi16 *n;
324
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd != NULL
329 && (symbol->flags & BSF_SECTION_SYM) == 0
330 && reloc_entry->addend == 0)
331 {
332 reloc_entry->address += input_section->output_offset;
333 return bfd_reloc_ok;
334 }
335
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
338 return bfd_reloc_outofrange;
339
340 ret = bfd_reloc_ok;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
344
345 if (bfd_is_com_section (symbol->section))
346 relocation = 0;
347 else
348 relocation = symbol->value;
349
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
353
354 /* Save the information, and let LO16 do the actual relocation. */
355 n = bfd_malloc ((bfd_size_type) sizeof *n);
356 if (n == NULL)
357 return bfd_reloc_outofrange;
358 n->addr = (bfd_byte *) data + reloc_entry->address;
359 n->addend = relocation;
360 n->next = m32r_hi16_list;
361 m32r_hi16_list = n;
362
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
365
366 return ret;
367 }
368
369 /* Handle an M32R ELF HI16 reloc. */
370
371 static void
372 m32r_elf_relocate_hi16 (bfd *input_bfd,
373 int type,
374 Elf_Internal_Rela *relhi,
375 Elf_Internal_Rela *rello,
376 bfd_byte *contents,
377 bfd_vma addend)
378 {
379 unsigned long insn;
380 bfd_vma addlo;
381
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
383
384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385 if (type == R_M32R_HI16_SLO)
386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
387 else
388 addlo &= 0xffff;
389
390 addend += ((insn & 0xffff) << 16) + addlo;
391
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
395 addend += 0x10000;
396
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
400 }
401
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
405
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd *input_bfd,
408 arelent *reloc_entry,
409 asymbol *symbol,
410 void * data,
411 asection *input_section,
412 bfd *output_bfd,
413 char **error_message)
414 {
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd != NULL
419 && (symbol->flags & BSF_SECTION_SYM) == 0
420 && reloc_entry->addend == 0)
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425
426 if (m32r_hi16_list != NULL)
427 {
428 struct m32r_hi16 *l;
429
430 l = m32r_hi16_list;
431 while (l != NULL)
432 {
433 unsigned long insn;
434 unsigned long val;
435 unsigned long vallo;
436 struct m32r_hi16 *next;
437
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn = bfd_get_32 (input_bfd, l->addr);
442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val = ((insn & 0xffff) << 16) + vallo;
445 val += l->addend;
446
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
449 val += 0x10000;
450
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
453
454 next = l->next;
455 free (l);
456 l = next;
457 }
458
459 m32r_hi16_list = NULL;
460 }
461
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 input_section, output_bfd, error_message);
469 }
470
471 \f
472 static reloc_howto_type m32r_elf_howto_table[] =
473 {
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 32, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_bitfield, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
491 0, /* rightshift */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
503
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 24, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
533
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
537 slot for pc. */
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
541 again. */
542 HOWTO (R_M32R_10_PCREL, /* type */
543 2, /* rightshift */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
545 10, /* bitsize */
546 TRUE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_signed, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE, /* partial_inplace */
552 0xff, /* src_mask */
553 0xff, /* dst_mask */
554 TRUE), /* pcrel_offset */
555
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
570
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
575 again. */
576 HOWTO (R_M32R_26_PCREL, /* type */
577 2, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 26, /* bitsize */
580 TRUE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
589
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_dont, /* complain_on_overflow */
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
607 16, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
619
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
634
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
649
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 0, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 0, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 EMPTY_HOWTO (13),
681 EMPTY_HOWTO (14),
682 EMPTY_HOWTO (15),
683 EMPTY_HOWTO (16),
684 EMPTY_HOWTO (17),
685 EMPTY_HOWTO (18),
686 EMPTY_HOWTO (19),
687 EMPTY_HOWTO (20),
688 EMPTY_HOWTO (21),
689 EMPTY_HOWTO (22),
690 EMPTY_HOWTO (23),
691 EMPTY_HOWTO (24),
692 EMPTY_HOWTO (25),
693 EMPTY_HOWTO (26),
694 EMPTY_HOWTO (27),
695 EMPTY_HOWTO (28),
696 EMPTY_HOWTO (29),
697 EMPTY_HOWTO (30),
698 EMPTY_HOWTO (31),
699 EMPTY_HOWTO (32),
700
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 32, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
730
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 24, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
745
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 10, /* bitsize */
750 TRUE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE, /* partial_inplace */
756 0xff, /* src_mask */
757 0xff, /* dst_mask */
758 TRUE), /* pcrel_offset */
759
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 TRUE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
774
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 26, /* bitsize */
780 TRUE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
789
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
792 16, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
804
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
819
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
849
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
854 0, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0, /* dst_mask */
863 FALSE), /* pcrel_offset */
864
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 0, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0, /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
884 32, /* bitsize */
885 TRUE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_bitfield, /* complain_on_overflow */
888 bfd_elf_generic_reloc,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE), /* pcrel_offset */
894
895 EMPTY_HOWTO (46),
896 EMPTY_HOWTO (47),
897
898 /* Like R_M32R_24, but referring to the GOT table entry for
899 the symbol. */
900 HOWTO (R_M32R_GOT24, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 24, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_unsigned, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
913
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL, /* type */
917 2, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 24, /* bitsize */
920 TRUE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_signed, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE), /* pcrel_offset */
929
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_bitfield, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
948
949 /* Like R_M32R_24, but used when setting global offset table
950 entries. */
951 HOWTO (R_M32R_GLOB_DAT, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_bitfield, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
964
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 32, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
979
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
982 addend. */
983 HOWTO (R_M32R_RELATIVE, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 32, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
996
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 24, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_bitfield, /* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1010
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1012 table register. */
1013 HOWTO (R_M32R_GOTPC24, /* type */
1014 0, /* rightshift */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 24, /* bitsize */
1017 TRUE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_unsigned, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE), /* pcrel_offset */
1026
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028 the symbol. */
1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1042
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044 the symbol. */
1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1060 the symbol. */
1061 HOWTO (R_M32R_GOT16_LO, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 0, /* bitpos */
1067 complain_overflow_dont, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1074
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077 the symbol. */
1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 bfd_elf_generic_reloc, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE), /* pcrel_offset */
1091
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094 the symbol. */
1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE), /* pcrel_offset */
1108
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1111 the symbol. */
1112 HOWTO (R_M32R_GOTPC_LO, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE), /* pcrel_offset */
1125
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 bfd_elf_generic_reloc, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167 };
1168
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1170
1171 struct m32r_reloc_map
1172 {
1173 bfd_reloc_code_real_type bfd_reloc_val;
1174 unsigned char elf_reloc_val;
1175 };
1176
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1179 {
1180 { BFD_RELOC_NONE, R_M32R_NONE },
1181 { BFD_RELOC_16, R_M32R_16 },
1182 { BFD_RELOC_32, R_M32R_32 },
1183 { BFD_RELOC_M32R_24, R_M32R_24 },
1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1193 };
1194 #else
1195 static const struct m32r_reloc_map m32r_reloc_map[] =
1196 {
1197 { BFD_RELOC_NONE, R_M32R_NONE },
1198 { BFD_RELOC_16, R_M32R_16_RELA },
1199 { BFD_RELOC_32, R_M32R_32_RELA },
1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1211
1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1229 };
1230 #endif
1231
1232 static reloc_howto_type *
1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 bfd_reloc_code_real_type code)
1235 {
1236 unsigned int i;
1237
1238 #ifdef USE_M32R_OLD_RELOC
1239 for (i = 0;
1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1241 i++)
1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1244
1245 #else /* ! USE_M32R_OLD_RELOC */
1246
1247 for (i = 0;
1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1249 i++)
1250 if (m32r_reloc_map[i].bfd_reloc_val == code)
1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1252 #endif
1253
1254 return NULL;
1255 }
1256
1257 /* Set the howto pointer for an M32R ELF reloc. */
1258
1259 static void
1260 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1261 arelent *cache_ptr,
1262 Elf_Internal_Rela *dst)
1263 {
1264 unsigned int r_type;
1265
1266 r_type = ELF32_R_TYPE (dst->r_info);
1267 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1268 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1269 }
1270
1271 static void
1272 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1273 arelent *cache_ptr,
1274 Elf_Internal_Rela *dst)
1275 {
1276 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1277 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1278 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1279 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1280 }
1281
1282 \f
1283 /* Given a BFD section, try to locate the corresponding ELF section
1284 index. */
1285
1286 static bfd_boolean
1287 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1288 asection *sec,
1289 int *retval)
1290 {
1291 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1292 {
1293 *retval = SHN_M32R_SCOMMON;
1294 return TRUE;
1295 }
1296 return FALSE;
1297 }
1298
1299 /* M32R ELF uses two common sections. One is the usual one, and the other
1300 is for small objects. All the small objects are kept together, and then
1301 referenced via one register, which yields faster assembler code. It is
1302 up to the compiler to emit an instruction to load the register with
1303 _SDA_BASE. This is what we use for the small common section. This
1304 approach is copied from elf32-mips.c. */
1305 static asection m32r_elf_scom_section;
1306 static asymbol m32r_elf_scom_symbol;
1307 static asymbol *m32r_elf_scom_symbol_ptr;
1308
1309 /* Handle the special M32R section numbers that a symbol may use. */
1310
1311 static void
1312 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1313 {
1314 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1315
1316 switch (elfsym->internal_elf_sym.st_shndx)
1317 {
1318 case SHN_M32R_SCOMMON:
1319 if (m32r_elf_scom_section.name == NULL)
1320 {
1321 /* Initialize the small common section. */
1322 m32r_elf_scom_section.name = ".scommon";
1323 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1324 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1325 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1326 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1327 m32r_elf_scom_symbol.name = ".scommon";
1328 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1329 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1330 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1331 }
1332 asym->section = &m32r_elf_scom_section;
1333 asym->value = elfsym->internal_elf_sym.st_size;
1334 break;
1335 }
1336 }
1337
1338 /* Hook called by the linker routine which adds symbols from an object
1339 file. We must handle the special M32R section numbers here.
1340 We also keep watching for whether we need to create the sdata special
1341 linker sections. */
1342
1343 static bfd_boolean
1344 m32r_elf_add_symbol_hook (bfd *abfd,
1345 struct bfd_link_info *info,
1346 Elf_Internal_Sym *sym,
1347 const char **namep,
1348 flagword *flagsp ATTRIBUTE_UNUSED,
1349 asection **secp,
1350 bfd_vma *valp)
1351 {
1352 if (! info->relocatable
1353 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1354 && strcmp (*namep, "_SDA_BASE_") == 0
1355 && is_elf_hash_table (info->hash))
1356 {
1357 /* This is simpler than using _bfd_elf_create_linker_section
1358 (our needs are simpler than ppc's needs). Also
1359 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1360 section already exists a new one is created that follows it which
1361 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1362 struct elf_link_hash_entry *h;
1363 struct bfd_link_hash_entry *bh;
1364 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1365
1366 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1367 if (s == NULL)
1368 {
1369 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1370 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1371
1372 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1373 flags);
1374 if (s == NULL)
1375 return FALSE;
1376 bfd_set_section_alignment (abfd, s, 2);
1377 }
1378
1379 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1380 FALSE, FALSE, FALSE);
1381
1382 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1383 && !(_bfd_generic_link_add_one_symbol (info,
1384 abfd,
1385 "_SDA_BASE_",
1386 BSF_GLOBAL,
1387 s,
1388 (bfd_vma) 32768,
1389 NULL,
1390 FALSE,
1391 get_elf_backend_data (abfd)->collect,
1392 &bh)))
1393 return FALSE;
1394 h = (struct elf_link_hash_entry *) bh;
1395 h->type = STT_OBJECT;
1396 }
1397
1398 switch (sym->st_shndx)
1399 {
1400 case SHN_M32R_SCOMMON:
1401 *secp = bfd_make_section_old_way (abfd, ".scommon");
1402 (*secp)->flags |= SEC_IS_COMMON;
1403 *valp = sym->st_size;
1404 break;
1405 }
1406
1407 return TRUE;
1408 }
1409
1410 /* We have to figure out the SDA_BASE value, so that we can adjust the
1411 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1412 BFD. If we can't find it, we're stuck. We cache it in the ELF
1413 target data. We don't need to adjust the symbol value for an
1414 external symbol if we are producing relocatable output. */
1415
1416 static bfd_reloc_status_type
1417 m32r_elf_final_sda_base (bfd *output_bfd,
1418 struct bfd_link_info *info,
1419 const char **error_message,
1420 bfd_vma *psb)
1421 {
1422 if (elf_gp (output_bfd) == 0)
1423 {
1424 struct bfd_link_hash_entry *h;
1425
1426 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1427 if (h != NULL && h->type == bfd_link_hash_defined)
1428 elf_gp (output_bfd) = (h->u.def.value
1429 + h->u.def.section->output_section->vma
1430 + h->u.def.section->output_offset);
1431 else
1432 {
1433 /* Only get the error once. */
1434 *psb = elf_gp (output_bfd) = 4;
1435 *error_message =
1436 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1437 return bfd_reloc_dangerous;
1438 }
1439 }
1440 *psb = elf_gp (output_bfd);
1441 return bfd_reloc_ok;
1442 }
1443 \f
1444 /* Return size of a PLT entry. */
1445 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1446
1447 /* The m32r linker needs to keep track of the number of relocs that it
1448 decides to copy in check_relocs for each symbol. This is so that
1449 it can discard PC relative relocs if it doesn't need them when
1450 linking with -Bsymbolic. We store the information in a field
1451 extending the regular ELF linker hash table. */
1452
1453 /* This structure keeps track of the number of PC relative relocs we
1454 have copied for a given symbol. */
1455
1456 struct elf_m32r_pcrel_relocs_copied
1457 {
1458 /* Next section. */
1459 struct elf_m32r_pcrel_relocs_copied *next;
1460 /* A section in dynobj. */
1461 asection *section;
1462 /* Number of relocs copied in this section. */
1463 bfd_size_type count;
1464 };
1465
1466 /* The sh linker needs to keep track of the number of relocs that it
1467 decides to copy as dynamic relocs in check_relocs for each symbol.
1468 This is so that it can later discard them if they are found to be
1469 unnecessary. We store the information in a field extending the
1470 regular ELF linker hash table. */
1471
1472 struct elf_m32r_dyn_relocs
1473 {
1474 struct elf_m32r_dyn_relocs *next;
1475
1476 /* The input section of the reloc. */
1477 asection *sec;
1478
1479 /* Total number of relocs copied for the input section. */
1480 bfd_size_type count;
1481
1482 /* Number of pc-relative relocs copied for the input section. */
1483 bfd_size_type pc_count;
1484 };
1485
1486
1487 /* m32r ELF linker hash entry. */
1488
1489 struct elf_m32r_link_hash_entry
1490 {
1491 struct elf_link_hash_entry root;
1492
1493 /* Track dynamic relocs copied for this symbol. */
1494 struct elf_m32r_dyn_relocs *dyn_relocs;
1495 };
1496
1497 /* m32r ELF linker hash table. */
1498
1499 struct elf_m32r_link_hash_table
1500 {
1501 struct elf_link_hash_table root;
1502
1503 /* Short-cuts to get to dynamic linker sections. */
1504 asection *sgot;
1505 asection *sgotplt;
1506 asection *srelgot;
1507 asection *splt;
1508 asection *srelplt;
1509 asection *sdynbss;
1510 asection *srelbss;
1511
1512 /* Small local sym to section mapping cache. */
1513 struct sym_sec_cache sym_sec;
1514 };
1515
1516 /* Traverse an m32r ELF linker hash table. */
1517
1518 #define m32r_elf_link_hash_traverse(table, func, info) \
1519 (elf_link_hash_traverse \
1520 (&(table)->root, \
1521 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1522 (info)))
1523
1524 /* Get the m32r ELF linker hash table from a link_info structure. */
1525
1526
1527 #define m32r_elf_hash_table(p) \
1528 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1529
1530 /* Create an entry in an m32r ELF linker hash table. */
1531
1532 static struct bfd_hash_entry *
1533 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1534 struct bfd_hash_table *table,
1535 const char *string)
1536 {
1537 struct elf_m32r_link_hash_entry *ret =
1538 (struct elf_m32r_link_hash_entry *) entry;
1539
1540 /* Allocate the structure if it has not already been allocated by a
1541 subclass. */
1542 if (ret == NULL)
1543 ret = bfd_hash_allocate (table,
1544 sizeof (struct elf_m32r_link_hash_entry));
1545 if (ret == NULL)
1546 return NULL;
1547
1548 /* Call the allocation method of the superclass. */
1549 ret = ((struct elf_m32r_link_hash_entry *)
1550 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1551 table, string));
1552 if (ret != NULL)
1553 {
1554 struct elf_m32r_link_hash_entry *eh;
1555
1556 eh = (struct elf_m32r_link_hash_entry *) ret;
1557 eh->dyn_relocs = NULL;
1558 }
1559
1560 return (struct bfd_hash_entry *) ret;
1561 }
1562
1563 /* Create an m32r ELF linker hash table. */
1564
1565 static struct bfd_link_hash_table *
1566 m32r_elf_link_hash_table_create (bfd *abfd)
1567 {
1568 struct elf_m32r_link_hash_table *ret;
1569 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1570
1571 ret = bfd_malloc (amt);
1572 if (ret == NULL)
1573 return NULL;
1574
1575 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
1576 m32r_elf_link_hash_newfunc))
1577 {
1578 free (ret);
1579 return NULL;
1580 }
1581
1582 ret->sgot = NULL;
1583 ret->sgotplt = NULL;
1584 ret->srelgot = NULL;
1585 ret->splt = NULL;
1586 ret->srelplt = NULL;
1587 ret->sdynbss = NULL;
1588 ret->srelbss = NULL;
1589 ret->sym_sec.abfd = NULL;
1590
1591 return &ret->root.root;
1592 }
1593
1594 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1595 shortcuts to them in our hash table. */
1596
1597 static bfd_boolean
1598 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1599 {
1600 struct elf_m32r_link_hash_table *htab;
1601
1602 if (! _bfd_elf_create_got_section (dynobj, info))
1603 return FALSE;
1604
1605 htab = m32r_elf_hash_table (info);
1606 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1607 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1608 if (! htab->sgot || ! htab->sgotplt)
1609 abort ();
1610
1611 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1612 (SEC_ALLOC
1613 | SEC_LOAD
1614 | SEC_HAS_CONTENTS
1615 | SEC_IN_MEMORY
1616 | SEC_LINKER_CREATED
1617 | SEC_READONLY));
1618 if (htab->srelgot == NULL
1619 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1620 return FALSE;
1621
1622 return TRUE;
1623 }
1624
1625 /* Create dynamic sections when linking against a dynamic object. */
1626
1627 static bfd_boolean
1628 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1629 {
1630 struct elf_m32r_link_hash_table *htab;
1631 flagword flags, pltflags;
1632 asection *s;
1633 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1634 int ptralign = 2; /* 32bit */
1635
1636 htab = m32r_elf_hash_table (info);
1637
1638 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1639 .rel[a].bss sections. */
1640 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1641 | SEC_LINKER_CREATED);
1642
1643 pltflags = flags;
1644 pltflags |= SEC_CODE;
1645 if (bed->plt_not_loaded)
1646 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1647 if (bed->plt_readonly)
1648 pltflags |= SEC_READONLY;
1649
1650 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1651 htab->splt = s;
1652 if (s == NULL
1653 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1654 return FALSE;
1655
1656 if (bed->want_plt_sym)
1657 {
1658 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1659 .plt section. */
1660 struct bfd_link_hash_entry *bh = NULL;
1661 struct elf_link_hash_entry *h;
1662
1663 if (! (_bfd_generic_link_add_one_symbol
1664 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1665 (bfd_vma) 0, NULL, FALSE,
1666 get_elf_backend_data (abfd)->collect, &bh)))
1667 return FALSE;
1668 h = (struct elf_link_hash_entry *) bh;
1669 h->def_regular = 1;
1670 h->type = STT_OBJECT;
1671 htab->root.hplt = h;
1672
1673 if (info->shared
1674 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1675 return FALSE;
1676 }
1677
1678 s = bfd_make_section_with_flags (abfd,
1679 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1680 flags | SEC_READONLY);
1681 htab->srelplt = s;
1682 if (s == NULL
1683 || ! bfd_set_section_alignment (abfd, s, ptralign))
1684 return FALSE;
1685
1686 if (htab->sgot == NULL
1687 && ! create_got_section (abfd, info))
1688 return FALSE;
1689
1690 {
1691 const char *secname;
1692 char *relname;
1693 flagword secflags;
1694 asection *sec;
1695
1696 for (sec = abfd->sections; sec; sec = sec->next)
1697 {
1698 secflags = bfd_get_section_flags (abfd, sec);
1699 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1700 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1701 continue;
1702 secname = bfd_get_section_name (abfd, sec);
1703 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1704 strcpy (relname, ".rela");
1705 strcat (relname, secname);
1706 if (bfd_get_section_by_name (abfd, secname))
1707 continue;
1708 s = bfd_make_section_with_flags (abfd, relname,
1709 flags | SEC_READONLY);
1710 if (s == NULL
1711 || ! bfd_set_section_alignment (abfd, s, ptralign))
1712 return FALSE;
1713 }
1714 }
1715
1716 if (bed->want_dynbss)
1717 {
1718 /* The .dynbss section is a place to put symbols which are defined
1719 by dynamic objects, are referenced by regular objects, and are
1720 not functions. We must allocate space for them in the process
1721 image and use a R_*_COPY reloc to tell the dynamic linker to
1722 initialize them at run time. The linker script puts the .dynbss
1723 section into the .bss section of the final image. */
1724 s = bfd_make_section_with_flags (abfd, ".dynbss",
1725 SEC_ALLOC | SEC_LINKER_CREATED);
1726 htab->sdynbss = s;
1727 if (s == NULL)
1728 return FALSE;
1729 /* The .rel[a].bss section holds copy relocs. This section is not
1730 normally needed. We need to create it here, though, so that the
1731 linker will map it to an output section. We can't just create it
1732 only if we need it, because we will not know whether we need it
1733 until we have seen all the input files, and the first time the
1734 main linker code calls BFD after examining all the input files
1735 (size_dynamic_sections) the input sections have already been
1736 mapped to the output sections. If the section turns out not to
1737 be needed, we can discard it later. We will never need this
1738 section when generating a shared object, since they do not use
1739 copy relocs. */
1740 if (! info->shared)
1741 {
1742 s = bfd_make_section_with_flags (abfd,
1743 (bed->default_use_rela_p
1744 ? ".rela.bss" : ".rel.bss"),
1745 flags | SEC_READONLY);
1746 htab->srelbss = s;
1747 if (s == NULL
1748 || ! bfd_set_section_alignment (abfd, s, ptralign))
1749 return FALSE;
1750 }
1751 }
1752
1753 return TRUE;
1754 }
1755
1756 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1757
1758 static void
1759 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1760 struct elf_link_hash_entry *dir,
1761 struct elf_link_hash_entry *ind)
1762 {
1763 struct elf_m32r_link_hash_entry * edir;
1764 struct elf_m32r_link_hash_entry * eind;
1765
1766 edir = (struct elf_m32r_link_hash_entry *) dir;
1767 eind = (struct elf_m32r_link_hash_entry *) ind;
1768
1769 if (eind->dyn_relocs != NULL)
1770 {
1771 if (edir->dyn_relocs != NULL)
1772 {
1773 struct elf_m32r_dyn_relocs **pp;
1774 struct elf_m32r_dyn_relocs *p;
1775
1776 /* Add reloc counts against the indirect sym to the direct sym
1777 list. Merge any entries against the same section. */
1778 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1779 {
1780 struct elf_m32r_dyn_relocs *q;
1781
1782 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1783 if (q->sec == p->sec)
1784 {
1785 q->pc_count += p->pc_count;
1786 q->count += p->count;
1787 *pp = p->next;
1788 break;
1789 }
1790 if (q == NULL)
1791 pp = &p->next;
1792 }
1793 *pp = edir->dyn_relocs;
1794 }
1795
1796 edir->dyn_relocs = eind->dyn_relocs;
1797 eind->dyn_relocs = NULL;
1798 }
1799
1800 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1801 }
1802
1803 \f
1804 /* Adjust a symbol defined by a dynamic object and referenced by a
1805 regular object. The current definition is in some section of the
1806 dynamic object, but we're not including those sections. We have to
1807 change the definition to something the rest of the link can
1808 understand. */
1809
1810 static bfd_boolean
1811 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1812 struct elf_link_hash_entry *h)
1813 {
1814 struct elf_m32r_link_hash_table *htab;
1815 struct elf_m32r_link_hash_entry *eh;
1816 struct elf_m32r_dyn_relocs *p;
1817 bfd *dynobj;
1818 asection *s;
1819 unsigned int power_of_two;
1820
1821 #ifdef DEBUG_PIC
1822 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1823 #endif
1824
1825 dynobj = elf_hash_table (info)->dynobj;
1826
1827 /* Make sure we know what is going on here. */
1828 BFD_ASSERT (dynobj != NULL
1829 && (h->needs_plt
1830 || h->u.weakdef != NULL
1831 || (h->def_dynamic
1832 && h->ref_regular
1833 && !h->def_regular)));
1834
1835 /* If this is a function, put it in the procedure linkage table. We
1836 will fill in the contents of the procedure linkage table later,
1837 when we know the address of the .got section. */
1838 if (h->type == STT_FUNC
1839 || h->needs_plt)
1840 {
1841 if (! info->shared
1842 && !h->def_dynamic
1843 && !h->ref_dynamic
1844 && h->root.type != bfd_link_hash_undefweak
1845 && h->root.type != bfd_link_hash_undefined)
1846 {
1847 /* This case can occur if we saw a PLT reloc in an input
1848 file, but the symbol was never referred to by a dynamic
1849 object. In such a case, we don't actually need to build
1850 a procedure linkage table, and we can just do a PCREL
1851 reloc instead. */
1852 h->plt.offset = (bfd_vma) -1;
1853 h->needs_plt = 0;
1854 }
1855
1856 return TRUE;
1857 }
1858 else
1859 h->plt.offset = (bfd_vma) -1;
1860
1861 /* If this is a weak symbol, and there is a real definition, the
1862 processor independent code will have arranged for us to see the
1863 real definition first, and we can just use the same value. */
1864 if (h->u.weakdef != NULL)
1865 {
1866 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1867 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1868 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1869 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1870 return TRUE;
1871 }
1872
1873 /* This is a reference to a symbol defined by a dynamic object which
1874 is not a function. */
1875
1876 /* If we are creating a shared library, we must presume that the
1877 only references to the symbol are via the global offset table.
1878 For such cases we need not do anything here; the relocations will
1879 be handled correctly by relocate_section. */
1880 if (info->shared)
1881 return TRUE;
1882
1883 /* If there are no references to this symbol that do not use the
1884 GOT, we don't need to generate a copy reloc. */
1885 if (!h->non_got_ref)
1886 return TRUE;
1887
1888 /* If -z nocopyreloc was given, we won't generate them either. */
1889 if (info->nocopyreloc)
1890 {
1891 h->non_got_ref = 0;
1892 return TRUE;
1893 }
1894
1895 eh = (struct elf_m32r_link_hash_entry *) h;
1896 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1897 {
1898 s = p->sec->output_section;
1899 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1900 break;
1901 }
1902
1903 /* If we didn't find any dynamic relocs in sections which needs the
1904 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1905 the copy reloc. */
1906 if (p == NULL)
1907 {
1908 h->non_got_ref = 0;
1909 return TRUE;
1910 }
1911
1912 if (h->size == 0)
1913 {
1914 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1915 h->root.root.string);
1916 return TRUE;
1917 }
1918
1919 /* We must allocate the symbol in our .dynbss section, which will
1920 become part of the .bss section of the executable. There will be
1921 an entry for this symbol in the .dynsym section. The dynamic
1922 object will contain position independent code, so all references
1923 from the dynamic object to this symbol will go through the global
1924 offset table. The dynamic linker will use the .dynsym entry to
1925 determine the address it must put in the global offset table, so
1926 both the dynamic object and the regular object will refer to the
1927 same memory location for the variable. */
1928
1929 htab = m32r_elf_hash_table (info);
1930 s = htab->sdynbss;
1931 BFD_ASSERT (s != NULL);
1932
1933 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1934 to copy the initial value out of the dynamic object and into the
1935 runtime process image. We need to remember the offset into the
1936 .rela.bss section we are going to use. */
1937 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1938 {
1939 asection *srel;
1940
1941 srel = htab->srelbss;
1942 BFD_ASSERT (srel != NULL);
1943 srel->size += sizeof (Elf32_External_Rela);
1944 h->needs_copy = 1;
1945 }
1946
1947 /* We need to figure out the alignment required for this symbol. I
1948 have no idea how ELF linkers handle this. */
1949 power_of_two = bfd_log2 (h->size);
1950 if (power_of_two > 3)
1951 power_of_two = 3;
1952
1953 /* Apply the required alignment. */
1954 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1955 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1956 {
1957 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1958 return FALSE;
1959 }
1960
1961 /* Define the symbol as being at this point in the section. */
1962 h->root.u.def.section = s;
1963 h->root.u.def.value = s->size;
1964
1965 /* Increment the section size to make room for the symbol. */
1966 s->size += h->size;
1967
1968 return TRUE;
1969 }
1970
1971 /* Allocate space in .plt, .got and associated reloc sections for
1972 dynamic relocs. */
1973
1974 static bfd_boolean
1975 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1976 {
1977 struct bfd_link_info *info;
1978 struct elf_m32r_link_hash_table *htab;
1979 struct elf_m32r_link_hash_entry *eh;
1980 struct elf_m32r_dyn_relocs *p;
1981
1982 if (h->root.type == bfd_link_hash_indirect)
1983 return TRUE;
1984
1985 if (h->root.type == bfd_link_hash_warning)
1986 /* When warning symbols are created, they **replace** the "real"
1987 entry in the hash table, thus we never get to see the real
1988 symbol in a hash traversal. So look at it now. */
1989 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1990
1991 info = (struct bfd_link_info *) inf;
1992 htab = m32r_elf_hash_table (info);
1993
1994 eh = (struct elf_m32r_link_hash_entry *) h;
1995
1996 if (htab->root.dynamic_sections_created
1997 && h->plt.refcount > 0)
1998 {
1999 /* Make sure this symbol is output as a dynamic symbol.
2000 Undefined weak syms won't yet be marked as dynamic. */
2001 if (h->dynindx == -1
2002 && !h->forced_local)
2003 {
2004 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2005 return FALSE;
2006 }
2007
2008 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2009 {
2010 asection *s = htab->splt;
2011
2012 /* If this is the first .plt entry, make room for the special
2013 first entry. */
2014 if (s->size == 0)
2015 s->size += PLT_ENTRY_SIZE;
2016
2017 h->plt.offset = s->size;
2018
2019 /* If this symbol is not defined in a regular file, and we are
2020 not generating a shared library, then set the symbol to this
2021 location in the .plt. This is required to make function
2022 pointers compare as equal between the normal executable and
2023 the shared library. */
2024 if (! info->shared
2025 && !h->def_regular)
2026 {
2027 h->root.u.def.section = s;
2028 h->root.u.def.value = h->plt.offset;
2029 }
2030
2031 /* Make room for this entry. */
2032 s->size += PLT_ENTRY_SIZE;
2033
2034 /* We also need to make an entry in the .got.plt section, which
2035 will be placed in the .got section by the linker script. */
2036 htab->sgotplt->size += 4;
2037
2038 /* We also need to make an entry in the .rel.plt section. */
2039 htab->srelplt->size += sizeof (Elf32_External_Rela);
2040 }
2041 else
2042 {
2043 h->plt.offset = (bfd_vma) -1;
2044 h->needs_plt = 0;
2045 }
2046 }
2047 else
2048 {
2049 h->plt.offset = (bfd_vma) -1;
2050 h->needs_plt = 0;
2051 }
2052
2053 if (h->got.refcount > 0)
2054 {
2055 asection *s;
2056 bfd_boolean dyn;
2057
2058 /* Make sure this symbol is output as a dynamic symbol.
2059 Undefined weak syms won't yet be marked as dynamic. */
2060 if (h->dynindx == -1
2061 && !h->forced_local)
2062 {
2063 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2064 return FALSE;
2065 }
2066
2067 s = htab->sgot;
2068
2069 h->got.offset = s->size;
2070 s->size += 4;
2071 dyn = htab->root.dynamic_sections_created;
2072 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2073 htab->srelgot->size += sizeof (Elf32_External_Rela);
2074 }
2075 else
2076 h->got.offset = (bfd_vma) -1;
2077
2078 if (eh->dyn_relocs == NULL)
2079 return TRUE;
2080
2081 /* In the shared -Bsymbolic case, discard space allocated for
2082 dynamic pc-relative relocs against symbols which turn out to be
2083 defined in regular objects. For the normal shared case, discard
2084 space for pc-relative relocs that have become local due to symbol
2085 visibility changes. */
2086
2087 if (info->shared)
2088 {
2089 if (h->def_regular
2090 && (h->forced_local
2091 || info->symbolic))
2092 {
2093 struct elf_m32r_dyn_relocs **pp;
2094
2095 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2096 {
2097 p->count -= p->pc_count;
2098 p->pc_count = 0;
2099 if (p->count == 0)
2100 *pp = p->next;
2101 else
2102 pp = &p->next;
2103 }
2104 }
2105
2106 /* Also discard relocs on undefined weak syms with non-default
2107 visibility. */
2108 if (eh->dyn_relocs != NULL
2109 && h->root.type == bfd_link_hash_undefweak)
2110 {
2111 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2112 eh->dyn_relocs = NULL;
2113
2114 /* Make sure undefined weak symbols are output as a dynamic
2115 symbol in PIEs. */
2116 else if (h->dynindx == -1
2117 && !h->forced_local)
2118 {
2119 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2120 return FALSE;
2121 }
2122 }
2123 }
2124 else
2125 {
2126 /* For the non-shared case, discard space for relocs against
2127 symbols which turn out to need copy relocs or are not
2128 dynamic. */
2129
2130 if (!h->non_got_ref
2131 && ((h->def_dynamic
2132 && !h->def_regular)
2133 || (htab->root.dynamic_sections_created
2134 && (h->root.type == bfd_link_hash_undefweak
2135 || h->root.type == bfd_link_hash_undefined))))
2136 {
2137 /* Make sure this symbol is output as a dynamic symbol.
2138 Undefined weak syms won't yet be marked as dynamic. */
2139 if (h->dynindx == -1
2140 && !h->forced_local)
2141 {
2142 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2143 return FALSE;
2144 }
2145
2146 /* If that succeeded, we know we'll be keeping all the
2147 relocs. */
2148 if (h->dynindx != -1)
2149 goto keep;
2150 }
2151
2152 eh->dyn_relocs = NULL;
2153
2154 keep: ;
2155 }
2156
2157 /* Finally, allocate space. */
2158 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2159 {
2160 asection *sreloc = elf_section_data (p->sec)->sreloc;
2161 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2162 }
2163
2164 return TRUE;
2165 }
2166
2167 /* Find any dynamic relocs that apply to read-only sections. */
2168
2169 static bfd_boolean
2170 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2171 {
2172 struct elf_m32r_link_hash_entry *eh;
2173 struct elf_m32r_dyn_relocs *p;
2174
2175 if (h->root.type == bfd_link_hash_warning)
2176 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2177
2178 eh = (struct elf_m32r_link_hash_entry *) h;
2179 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2180 {
2181 asection *s = p->sec->output_section;
2182
2183 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2184 {
2185 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2186
2187 info->flags |= DF_TEXTREL;
2188
2189 /* Not an error, just cut short the traversal. */
2190 return FALSE;
2191 }
2192 }
2193 return TRUE;
2194 }
2195
2196 /* Set the sizes of the dynamic sections. */
2197
2198 static bfd_boolean
2199 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2200 struct bfd_link_info *info)
2201 {
2202 struct elf_m32r_link_hash_table *htab;
2203 bfd *dynobj;
2204 asection *s;
2205 bfd_boolean relocs;
2206 bfd *ibfd;
2207
2208 #ifdef DEBUG_PIC
2209 printf ("m32r_elf_size_dynamic_sections()\n");
2210 #endif
2211
2212 htab = m32r_elf_hash_table (info);
2213 dynobj = htab->root.dynobj;
2214 BFD_ASSERT (dynobj != NULL);
2215
2216 if (htab->root.dynamic_sections_created)
2217 {
2218 /* Set the contents of the .interp section to the interpreter. */
2219 if (info->executable)
2220 {
2221 s = bfd_get_section_by_name (dynobj, ".interp");
2222 BFD_ASSERT (s != NULL);
2223 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2224 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2225 }
2226 }
2227
2228 /* Set up .got offsets for local syms, and space for local dynamic
2229 relocs. */
2230 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2231 {
2232 bfd_signed_vma *local_got;
2233 bfd_signed_vma *end_local_got;
2234 bfd_size_type locsymcount;
2235 Elf_Internal_Shdr *symtab_hdr;
2236 asection *srel;
2237
2238 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2239 continue;
2240
2241 for (s = ibfd->sections; s != NULL; s = s->next)
2242 {
2243 struct elf_m32r_dyn_relocs *p;
2244
2245 for (p = ((struct elf_m32r_dyn_relocs *)
2246 elf_section_data (s)->local_dynrel);
2247 p != NULL;
2248 p = p->next)
2249 {
2250 if (! bfd_is_abs_section (p->sec)
2251 && bfd_is_abs_section (p->sec->output_section))
2252 {
2253 /* Input section has been discarded, either because
2254 it is a copy of a linkonce section or due to
2255 linker script /DISCARD/, so we'll be discarding
2256 the relocs too. */
2257 }
2258 else if (p->count != 0)
2259 {
2260 srel = elf_section_data (p->sec)->sreloc;
2261 srel->size += p->count * sizeof (Elf32_External_Rela);
2262 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2263 info->flags |= DF_TEXTREL;
2264 }
2265 }
2266 }
2267
2268 local_got = elf_local_got_refcounts (ibfd);
2269 if (!local_got)
2270 continue;
2271
2272 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2273 locsymcount = symtab_hdr->sh_info;
2274 end_local_got = local_got + locsymcount;
2275 s = htab->sgot;
2276 srel = htab->srelgot;
2277 for (; local_got < end_local_got; ++local_got)
2278 {
2279 if (*local_got > 0)
2280 {
2281 *local_got = s->size;
2282 s->size += 4;
2283 if (info->shared)
2284 srel->size += sizeof (Elf32_External_Rela);
2285 }
2286 else
2287 *local_got = (bfd_vma) -1;
2288 }
2289 }
2290
2291 /* Allocate global sym .plt and .got entries, and space for global
2292 sym dynamic relocs. */
2293 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2294
2295 /* We now have determined the sizes of the various dynamic sections.
2296 Allocate memory for them. */
2297 relocs = FALSE;
2298 for (s = dynobj->sections; s != NULL; s = s->next)
2299 {
2300 if ((s->flags & SEC_LINKER_CREATED) == 0)
2301 continue;
2302
2303 if (s == htab->splt
2304 || s == htab->sgot
2305 || s == htab->sgotplt
2306 || s == htab->sdynbss)
2307 {
2308 /* Strip this section if we don't need it; see the
2309 comment below. */
2310 }
2311 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2312 {
2313 if (s->size != 0 && s != htab->srelplt)
2314 relocs = TRUE;
2315
2316 /* We use the reloc_count field as a counter if we need
2317 to copy relocs into the output file. */
2318 s->reloc_count = 0;
2319 }
2320 else
2321 /* It's not one of our sections, so don't allocate space. */
2322 continue;
2323
2324 if (s->size == 0)
2325 {
2326 /* If we don't need this section, strip it from the
2327 output file. This is mostly to handle .rela.bss and
2328 .rela.plt. We must create both sections in
2329 create_dynamic_sections, because they must be created
2330 before the linker maps input sections to output
2331 sections. The linker does that before
2332 adjust_dynamic_symbol is called, and it is that
2333 function which decides whether anything needs to go
2334 into these sections. */
2335 s->flags |= SEC_EXCLUDE;
2336 continue;
2337 }
2338
2339 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2340 continue;
2341
2342 /* Allocate memory for the section contents. We use bfd_zalloc
2343 here in case unused entries are not reclaimed before the
2344 section's contents are written out. This should not happen,
2345 but this way if it does, we get a R_M32R_NONE reloc instead
2346 of garbage. */
2347 s->contents = bfd_zalloc (dynobj, s->size);
2348 if (s->contents == NULL)
2349 return FALSE;
2350 }
2351
2352 if (htab->root.dynamic_sections_created)
2353 {
2354 /* Add some entries to the .dynamic section. We fill in the
2355 values later, in m32r_elf_finish_dynamic_sections, but we
2356 must add the entries now so that we get the correct size for
2357 the .dynamic section. The DT_DEBUG entry is filled in by the
2358 dynamic linker and used by the debugger. */
2359 #define add_dynamic_entry(TAG, VAL) \
2360 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2361
2362 if (info->executable)
2363 {
2364 if (! add_dynamic_entry (DT_DEBUG, 0))
2365 return FALSE;
2366 }
2367
2368 if (htab->splt->size != 0)
2369 {
2370 if (! add_dynamic_entry (DT_PLTGOT, 0)
2371 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2372 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2373 || ! add_dynamic_entry (DT_JMPREL, 0))
2374 return FALSE;
2375 }
2376
2377 if (relocs)
2378 {
2379 if (! add_dynamic_entry (DT_RELA, 0)
2380 || ! add_dynamic_entry (DT_RELASZ, 0)
2381 || ! add_dynamic_entry (DT_RELAENT,
2382 sizeof (Elf32_External_Rela)))
2383 return FALSE;
2384
2385 /* If any dynamic relocs apply to a read-only section,
2386 then we need a DT_TEXTREL entry. */
2387 if ((info->flags & DF_TEXTREL) == 0)
2388 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2389 info);
2390
2391 if ((info->flags & DF_TEXTREL) != 0)
2392 {
2393 if (! add_dynamic_entry (DT_TEXTREL, 0))
2394 return FALSE;
2395 }
2396 }
2397 }
2398 #undef add_dynamic_entry
2399
2400 return TRUE;
2401 }
2402
2403 /* Relocate an M32R/D ELF section.
2404 There is some attempt to make this function usable for many architectures,
2405 both for RELA and REL type relocs, if only to serve as a learning tool.
2406
2407 The RELOCATE_SECTION function is called by the new ELF backend linker
2408 to handle the relocations for a section.
2409
2410 The relocs are always passed as Rela structures; if the section
2411 actually uses Rel structures, the r_addend field will always be
2412 zero.
2413
2414 This function is responsible for adjust the section contents as
2415 necessary, and (if using Rela relocs and generating a
2416 relocatable output file) adjusting the reloc addend as
2417 necessary.
2418
2419 This function does not have to worry about setting the reloc
2420 address or the reloc symbol index.
2421
2422 LOCAL_SYMS is a pointer to the swapped in local symbols.
2423
2424 LOCAL_SECTIONS is an array giving the section in the input file
2425 corresponding to the st_shndx field of each local symbol.
2426
2427 The global hash table entry for the global symbols can be found
2428 via elf_sym_hashes (input_bfd).
2429
2430 When generating relocatable output, this function must handle
2431 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2432 going to be the section symbol corresponding to the output
2433 section, which means that the addend must be adjusted
2434 accordingly. */
2435
2436 static bfd_boolean
2437 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2438 struct bfd_link_info *info,
2439 bfd *input_bfd,
2440 asection *input_section,
2441 bfd_byte *contents,
2442 Elf_Internal_Rela *relocs,
2443 Elf_Internal_Sym *local_syms,
2444 asection **local_sections)
2445 {
2446 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2447 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2448 Elf_Internal_Rela *rel, *relend;
2449 /* Assume success. */
2450 bfd_boolean ret = TRUE;
2451
2452 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2453 bfd *dynobj;
2454 bfd_vma *local_got_offsets;
2455 asection *sgot, *splt, *sreloc;
2456 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2457
2458 dynobj = htab->root.dynobj;
2459 local_got_offsets = elf_local_got_offsets (input_bfd);
2460
2461 sgot = htab->sgot;
2462 splt = htab->splt;
2463 sreloc = NULL;
2464
2465 rel = relocs;
2466 relend = relocs + input_section->reloc_count;
2467 for (; rel < relend; rel++)
2468 {
2469 int r_type;
2470 reloc_howto_type *howto;
2471 unsigned long r_symndx;
2472 struct elf_link_hash_entry *h;
2473 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2474 ensure it's zero (we use REL relocs, not RELA). Therefore this
2475 should be assigning zero to `addend', but for clarity we use
2476 `r_addend'. */
2477 bfd_vma addend = rel->r_addend;
2478 bfd_vma offset = rel->r_offset;
2479 Elf_Internal_Sym *sym;
2480 asection *sec;
2481 const char *sym_name;
2482 bfd_reloc_status_type r;
2483 const char *errmsg = NULL;
2484 bfd_boolean use_rel = FALSE;
2485
2486 h = NULL;
2487 r_type = ELF32_R_TYPE (rel->r_info);
2488 if (r_type < 0 || r_type >= (int) R_M32R_max)
2489 {
2490 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2491 input_bfd,
2492 (int) r_type);
2493 bfd_set_error (bfd_error_bad_value);
2494 ret = FALSE;
2495 continue;
2496 }
2497
2498 if ( r_type == R_M32R_GNU_VTENTRY
2499 || r_type == R_M32R_GNU_VTINHERIT
2500 || r_type == R_M32R_NONE
2501 || r_type == R_M32R_RELA_GNU_VTENTRY
2502 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2503 continue;
2504
2505 if (r_type <= R_M32R_GNU_VTENTRY)
2506 use_rel = TRUE;
2507
2508 howto = m32r_elf_howto_table + r_type;
2509 r_symndx = ELF32_R_SYM (rel->r_info);
2510
2511 if (info->relocatable && use_rel)
2512 {
2513 /* This is a relocatable link. We don't have to change
2514 anything, unless the reloc is against a section symbol,
2515 in which case we have to adjust according to where the
2516 section symbol winds up in the output section. */
2517 sec = NULL;
2518 if (r_symndx >= symtab_hdr->sh_info)
2519 /* External symbol. */
2520 continue;
2521
2522 /* Local symbol. */
2523 sym = local_syms + r_symndx;
2524 sym_name = "<local symbol>";
2525 /* STT_SECTION: symbol is associated with a section. */
2526 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2527 /* Symbol isn't associated with a section. Nothing to do. */
2528 continue;
2529
2530 sec = local_sections[r_symndx];
2531 addend += sec->output_offset + sym->st_value;
2532
2533 /* If partial_inplace, we need to store any additional addend
2534 back in the section. */
2535 if (! howto->partial_inplace)
2536 continue;
2537 /* ??? Here is a nice place to call a special_function
2538 like handler. */
2539 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2540 r = _bfd_relocate_contents (howto, input_bfd,
2541 addend, contents + offset);
2542 else
2543 {
2544 Elf_Internal_Rela *lorel;
2545
2546 /* We allow an arbitrary number of HI16 relocs before the
2547 LO16 reloc. This permits gcc to emit the HI and LO relocs
2548 itself. */
2549 for (lorel = rel + 1;
2550 (lorel < relend
2551 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2552 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2553 lorel++)
2554 continue;
2555 if (lorel < relend
2556 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2557 {
2558 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2559 contents, addend);
2560 r = bfd_reloc_ok;
2561 }
2562 else
2563 r = _bfd_relocate_contents (howto, input_bfd,
2564 addend, contents + offset);
2565 }
2566 }
2567 else
2568 {
2569 bfd_vma relocation;
2570
2571 /* This is a final link. */
2572 sym = NULL;
2573 sec = NULL;
2574 h = NULL;
2575
2576 if (r_symndx < symtab_hdr->sh_info)
2577 {
2578 /* Local symbol. */
2579 sym = local_syms + r_symndx;
2580 sec = local_sections[r_symndx];
2581 sym_name = "<local symbol>";
2582
2583 if (!use_rel)
2584 {
2585 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2586 addend = rel->r_addend;
2587
2588 if (info->relocatable)
2589 {
2590 /* This is a relocatable link. We don't have to change
2591 anything, unless the reloc is against a section symbol,
2592 in which case we have to adjust according to where the
2593 section symbol winds up in the output section. */
2594 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2595 rel->r_addend += sec->output_offset + sym->st_value;
2596
2597 continue;
2598 }
2599 }
2600 else
2601 {
2602 relocation = (sec->output_section->vma
2603 + sec->output_offset
2604 + sym->st_value);
2605 }
2606 }
2607 else
2608 {
2609 /* External symbol. */
2610 if (info->relocatable && !use_rel)
2611 continue;
2612
2613 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2614 while (h->root.type == bfd_link_hash_indirect
2615 || h->root.type == bfd_link_hash_warning)
2616 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2617 sym_name = h->root.root.string;
2618
2619 if (h->root.type == bfd_link_hash_defined
2620 || h->root.type == bfd_link_hash_defweak)
2621 {
2622 bfd_boolean dyn;
2623 sec = h->root.u.def.section;
2624
2625 dyn = htab->root.dynamic_sections_created;
2626 sec = h->root.u.def.section;
2627 if (r_type == R_M32R_GOTPC24
2628 || (r_type == R_M32R_GOTPC_HI_ULO
2629 || r_type == R_M32R_GOTPC_HI_SLO
2630 || r_type == R_M32R_GOTPC_LO)
2631 || (r_type == R_M32R_26_PLTREL
2632 && h->plt.offset != (bfd_vma) -1)
2633 || ((r_type == R_M32R_GOT24
2634 || r_type == R_M32R_GOT16_HI_ULO
2635 || r_type == R_M32R_GOT16_HI_SLO
2636 || r_type == R_M32R_GOT16_LO)
2637 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2638 info->shared, h)
2639 && (! info->shared
2640 || (! info->symbolic && h->dynindx != -1)
2641 || !h->def_regular))
2642 || (info->shared
2643 && ((! info->symbolic && h->dynindx != -1)
2644 || !h->def_regular)
2645 && (((r_type == R_M32R_16_RELA
2646 || r_type == R_M32R_32_RELA
2647 || r_type == R_M32R_24_RELA
2648 || r_type == R_M32R_HI16_ULO_RELA
2649 || r_type == R_M32R_HI16_SLO_RELA
2650 || r_type == R_M32R_LO16_RELA)
2651 && !h->forced_local)
2652 || r_type == R_M32R_REL32
2653 || r_type == R_M32R_10_PCREL_RELA
2654 || r_type == R_M32R_18_PCREL_RELA
2655 || r_type == R_M32R_26_PCREL_RELA)
2656 && ((input_section->flags & SEC_ALLOC) != 0
2657 /* DWARF will emit R_M32R_16(24,32) relocations
2658 in its sections against symbols defined
2659 externally in shared libraries. We can't do
2660 anything with them here. */
2661 || ((input_section->flags & SEC_DEBUGGING) != 0
2662 && h->def_dynamic))))
2663 {
2664 /* In these cases, we don't need the relocation
2665 value. We check specially because in some
2666 obscure cases sec->output_section will be NULL. */
2667 relocation = 0;
2668 }
2669 else if (sec->output_section == NULL)
2670 {
2671 (*_bfd_error_handler)
2672 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2673 input_bfd,
2674 input_section,
2675 (long) rel->r_offset,
2676 howto->name,
2677 h->root.root.string);
2678
2679 relocation = 0;
2680 }
2681 else
2682 relocation = (h->root.u.def.value
2683 + sec->output_section->vma
2684 + sec->output_offset);
2685 }
2686 else if (h->root.type == bfd_link_hash_undefweak)
2687 relocation = 0;
2688 else if (info->unresolved_syms_in_objects == RM_IGNORE
2689 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2690 relocation = 0;
2691 else
2692 {
2693 if (! ((*info->callbacks->undefined_symbol)
2694 (info, h->root.root.string, input_bfd,
2695 input_section, offset,
2696 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2697 || ELF_ST_VISIBILITY (h->other)))))
2698 return FALSE;
2699 relocation = 0;
2700 }
2701 }
2702
2703 /* Sanity check the address. */
2704 if (offset > high_address)
2705 {
2706 r = bfd_reloc_outofrange;
2707 goto check_reloc;
2708 }
2709
2710 switch ((int) r_type)
2711 {
2712 case R_M32R_GOTOFF:
2713 /* Relocation is relative to the start of the global offset
2714 table (for ld24 rx, #uimm24). eg access at label+addend
2715
2716 ld24 rx. #label@GOTOFF + addend
2717 sub rx, r12. */
2718
2719 BFD_ASSERT (sgot != NULL);
2720
2721 relocation = -(relocation - sgot->output_section->vma);
2722 rel->r_addend = -rel->r_addend;
2723 break;
2724
2725 case R_M32R_GOTOFF_HI_ULO:
2726 case R_M32R_GOTOFF_HI_SLO:
2727 case R_M32R_GOTOFF_LO:
2728 BFD_ASSERT (sgot != NULL);
2729
2730 relocation -= sgot->output_section->vma;
2731
2732 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2733 && ((relocation + rel->r_addend) & 0x8000))
2734 rel->r_addend += 0x10000;
2735 break;
2736
2737 case R_M32R_GOTPC24:
2738 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2739 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2740 */
2741 relocation = sgot->output_section->vma;
2742 break;
2743
2744 case R_M32R_GOTPC_HI_ULO:
2745 case R_M32R_GOTPC_HI_SLO:
2746 case R_M32R_GOTPC_LO:
2747 {
2748 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2749 bl .+4
2750 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2751 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2752 or
2753 bl .+4
2754 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2755 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2756 */
2757 relocation = sgot->output_section->vma;
2758 relocation -= (input_section->output_section->vma
2759 + input_section->output_offset
2760 + rel->r_offset);
2761 if ((r_type == R_M32R_GOTPC_HI_SLO)
2762 && ((relocation + rel->r_addend) & 0x8000))
2763 rel->r_addend += 0x10000;
2764
2765 break;
2766 }
2767 case R_M32R_GOT16_HI_ULO:
2768 case R_M32R_GOT16_HI_SLO:
2769 case R_M32R_GOT16_LO:
2770 /* Fall through. */
2771 case R_M32R_GOT24:
2772 /* Relocation is to the entry for this symbol in the global
2773 offset table. */
2774 BFD_ASSERT (sgot != NULL);
2775
2776 if (h != NULL)
2777 {
2778 bfd_boolean dyn;
2779 bfd_vma off;
2780
2781 off = h->got.offset;
2782 BFD_ASSERT (off != (bfd_vma) -1);
2783
2784 dyn = htab->root.dynamic_sections_created;
2785 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2786 || (info->shared
2787 && (info->symbolic
2788 || h->dynindx == -1
2789 || h->forced_local)
2790 && h->def_regular))
2791 {
2792 /* This is actually a static link, or it is a
2793 -Bsymbolic link and the symbol is defined
2794 locally, or the symbol was forced to be local
2795 because of a version file. We must initialize
2796 this entry in the global offset table. Since the
2797 offset must always be a multiple of 4, we use the
2798 least significant bit to record whether we have
2799 initialized it already.
2800
2801 When doing a dynamic link, we create a .rela.got
2802 relocation entry to initialize the value. This
2803 is done in the finish_dynamic_symbol routine. */
2804 if ((off & 1) != 0)
2805 off &= ~1;
2806 else
2807 {
2808 bfd_put_32 (output_bfd, relocation,
2809 sgot->contents + off);
2810 h->got.offset |= 1;
2811 }
2812 }
2813
2814 relocation = sgot->output_offset + off;
2815 }
2816 else
2817 {
2818 bfd_vma off;
2819 bfd_byte *loc;
2820
2821 BFD_ASSERT (local_got_offsets != NULL
2822 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2823
2824 off = local_got_offsets[r_symndx];
2825
2826 /* The offset must always be a multiple of 4. We use
2827 the least significant bit to record whether we have
2828 already processed this entry. */
2829 if ((off & 1) != 0)
2830 off &= ~1;
2831 else
2832 {
2833 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2834
2835 if (info->shared)
2836 {
2837 asection *srelgot;
2838 Elf_Internal_Rela outrel;
2839
2840 /* We need to generate a R_M32R_RELATIVE reloc
2841 for the dynamic linker. */
2842 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2843 BFD_ASSERT (srelgot != NULL);
2844
2845 outrel.r_offset = (sgot->output_section->vma
2846 + sgot->output_offset
2847 + off);
2848 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2849 outrel.r_addend = relocation;
2850 loc = srelgot->contents;
2851 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2852 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2853 ++srelgot->reloc_count;
2854 }
2855
2856 local_got_offsets[r_symndx] |= 1;
2857 }
2858
2859 relocation = sgot->output_offset + off;
2860 }
2861 if ((r_type == R_M32R_GOT16_HI_SLO)
2862 && ((relocation + rel->r_addend) & 0x8000))
2863 rel->r_addend += 0x10000;
2864
2865 break;
2866
2867 case R_M32R_26_PLTREL:
2868 /* Relocation is to the entry for this symbol in the
2869 procedure linkage table. */
2870
2871 /* The native assembler will generate a 26_PLTREL reloc
2872 for a local symbol if you assemble a call from one
2873 section to another when using -K pic. */
2874 if (h == NULL)
2875 break;
2876
2877 if (h->forced_local)
2878 break;
2879
2880 if (h->plt.offset == (bfd_vma) -1)
2881 /* We didn't make a PLT entry for this symbol. This
2882 happens when statically linking PIC code, or when
2883 using -Bsymbolic. */
2884 break;
2885
2886 relocation = (splt->output_section->vma
2887 + splt->output_offset
2888 + h->plt.offset);
2889 break;
2890
2891 case R_M32R_HI16_SLO_RELA:
2892 if ((relocation + rel->r_addend) & 0x8000)
2893 rel->r_addend += 0x10000;
2894 /* Fall through. */
2895
2896 case R_M32R_16_RELA:
2897 case R_M32R_24_RELA:
2898 case R_M32R_32_RELA:
2899 case R_M32R_REL32:
2900 case R_M32R_10_PCREL_RELA:
2901 case R_M32R_18_PCREL_RELA:
2902 case R_M32R_26_PCREL_RELA:
2903 case R_M32R_HI16_ULO_RELA:
2904 case R_M32R_LO16_RELA:
2905 if (info->shared
2906 && r_symndx != 0
2907 && (input_section->flags & SEC_ALLOC) != 0
2908 && (( r_type != R_M32R_10_PCREL_RELA
2909 && r_type != R_M32R_18_PCREL_RELA
2910 && r_type != R_M32R_26_PCREL_RELA
2911 && r_type != R_M32R_REL32)
2912 || (h != NULL
2913 && h->dynindx != -1
2914 && (! info->symbolic
2915 || !h->def_regular))))
2916 {
2917 Elf_Internal_Rela outrel;
2918 bfd_boolean skip, relocate;
2919 bfd_byte *loc;
2920
2921 /* When generating a shared object, these relocations
2922 are copied into the output file to be resolved at run
2923 time. */
2924 if (sreloc == NULL)
2925 {
2926 const char *name;
2927
2928 name = (bfd_elf_string_from_elf_section
2929 (input_bfd,
2930 elf_elfheader (input_bfd)->e_shstrndx,
2931 elf_section_data (input_section)->rel_hdr.sh_name));
2932 if (name == NULL)
2933 return FALSE;
2934
2935 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2936 && strcmp (bfd_get_section_name (input_bfd,
2937 input_section),
2938 name + 5) == 0);
2939
2940 sreloc = bfd_get_section_by_name (dynobj, name);
2941 BFD_ASSERT (sreloc != NULL);
2942 }
2943
2944 skip = FALSE;
2945 relocate = FALSE;
2946
2947 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2948 info,
2949 input_section,
2950 rel->r_offset);
2951 if (outrel.r_offset == (bfd_vma) -1)
2952 skip = TRUE;
2953 else if (outrel.r_offset == (bfd_vma) -2)
2954 skip = relocate = TRUE;
2955 outrel.r_offset += (input_section->output_section->vma
2956 + input_section->output_offset);
2957
2958 if (skip)
2959 memset (&outrel, 0, sizeof outrel);
2960 else if ( r_type == R_M32R_10_PCREL_RELA
2961 || r_type == R_M32R_18_PCREL_RELA
2962 || r_type == R_M32R_26_PCREL_RELA
2963 || r_type == R_M32R_REL32)
2964 {
2965 BFD_ASSERT (h != NULL && h->dynindx != -1);
2966 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2967 outrel.r_addend = rel->r_addend;
2968 }
2969 else
2970 {
2971 /* h->dynindx may be -1 if this symbol was marked to
2972 become local. */
2973 if (h == NULL
2974 || ((info->symbolic || h->dynindx == -1)
2975 && h->def_regular))
2976 {
2977 relocate = TRUE;
2978 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2979 outrel.r_addend = relocation + rel->r_addend;
2980 }
2981 else
2982 {
2983 BFD_ASSERT (h->dynindx != -1);
2984 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2985 outrel.r_addend = relocation + rel->r_addend;
2986 }
2987 }
2988
2989 loc = sreloc->contents;
2990 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2991 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2992 ++sreloc->reloc_count;
2993
2994 /* If this reloc is against an external symbol, we do
2995 not want to fiddle with the addend. Otherwise, we
2996 need to include the symbol value so that it becomes
2997 an addend for the dynamic reloc. */
2998 if (! relocate)
2999 continue;
3000 break;
3001 }
3002 else if (r_type != R_M32R_10_PCREL_RELA)
3003 break;
3004 /* Fall through. */
3005
3006 case (int) R_M32R_10_PCREL :
3007 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
3008 contents, offset,
3009 sec, relocation, addend);
3010 goto check_reloc;
3011
3012 case (int) R_M32R_HI16_SLO :
3013 case (int) R_M32R_HI16_ULO :
3014 {
3015 Elf_Internal_Rela *lorel;
3016
3017 /* We allow an arbitrary number of HI16 relocs before the
3018 LO16 reloc. This permits gcc to emit the HI and LO relocs
3019 itself. */
3020 for (lorel = rel + 1;
3021 (lorel < relend
3022 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
3023 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3024 lorel++)
3025 continue;
3026 if (lorel < relend
3027 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3028 {
3029 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3030 contents, relocation + addend);
3031 r = bfd_reloc_ok;
3032 }
3033 else
3034 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3035 contents, offset,
3036 relocation, addend);
3037 }
3038
3039 goto check_reloc;
3040
3041 case (int) R_M32R_SDA16_RELA:
3042 case (int) R_M32R_SDA16 :
3043 {
3044 const char *name;
3045
3046 BFD_ASSERT (sec != NULL);
3047 name = bfd_get_section_name (abfd, sec);
3048
3049 if ( strcmp (name, ".sdata") == 0
3050 || strcmp (name, ".sbss") == 0
3051 || strcmp (name, ".scommon") == 0)
3052 {
3053 bfd_vma sda_base;
3054 bfd *out_bfd = sec->output_section->owner;
3055
3056 r = m32r_elf_final_sda_base (out_bfd, info,
3057 &errmsg,
3058 &sda_base);
3059 if (r != bfd_reloc_ok)
3060 {
3061 ret = FALSE;
3062 goto check_reloc;
3063 }
3064
3065 /* At this point `relocation' contains the object's
3066 address. */
3067 relocation -= sda_base;
3068 /* Now it contains the offset from _SDA_BASE_. */
3069 }
3070 else
3071 {
3072 (*_bfd_error_handler)
3073 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3074 input_bfd,
3075 sec,
3076 sym_name,
3077 m32r_elf_howto_table[(int) r_type].name);
3078 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3079 ret = FALSE;
3080 continue;
3081 }
3082 }
3083 /* Fall through. */
3084
3085 default : /* OLD_M32R_RELOC */
3086
3087 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3088 contents, offset,
3089 relocation, addend);
3090 goto check_reloc;
3091 }
3092
3093 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3094 contents, rel->r_offset,
3095 relocation, rel->r_addend);
3096
3097 }
3098
3099 check_reloc:
3100
3101 if (r != bfd_reloc_ok)
3102 {
3103 /* FIXME: This should be generic enough to go in a utility. */
3104 const char *name;
3105
3106 if (h != NULL)
3107 name = h->root.root.string;
3108 else
3109 {
3110 name = (bfd_elf_string_from_elf_section
3111 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3112 if (name == NULL || *name == '\0')
3113 name = bfd_section_name (input_bfd, sec);
3114 }
3115
3116 if (errmsg != NULL)
3117 goto common_error;
3118
3119 switch (r)
3120 {
3121 case bfd_reloc_overflow:
3122 if (! ((*info->callbacks->reloc_overflow)
3123 (info, (h ? &h->root : NULL), name, howto->name,
3124 (bfd_vma) 0, input_bfd, input_section, offset)))
3125 return FALSE;
3126 break;
3127
3128 case bfd_reloc_undefined:
3129 if (! ((*info->callbacks->undefined_symbol)
3130 (info, name, input_bfd, input_section,
3131 offset, TRUE)))
3132 return FALSE;
3133 break;
3134
3135 case bfd_reloc_outofrange:
3136 errmsg = _("internal error: out of range error");
3137 goto common_error;
3138
3139 case bfd_reloc_notsupported:
3140 errmsg = _("internal error: unsupported relocation error");
3141 goto common_error;
3142
3143 case bfd_reloc_dangerous:
3144 errmsg = _("internal error: dangerous error");
3145 goto common_error;
3146
3147 default:
3148 errmsg = _("internal error: unknown error");
3149 /* fall through */
3150
3151 common_error:
3152 if (!((*info->callbacks->warning)
3153 (info, errmsg, name, input_bfd, input_section,
3154 offset)))
3155 return FALSE;
3156 break;
3157 }
3158 }
3159 }
3160
3161 return ret;
3162 }
3163
3164 /* Finish up dynamic symbol handling. We set the contents of various
3165 dynamic sections here. */
3166
3167 static bfd_boolean
3168 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3169 struct bfd_link_info *info,
3170 struct elf_link_hash_entry *h,
3171 Elf_Internal_Sym *sym)
3172 {
3173 struct elf_m32r_link_hash_table *htab;
3174 bfd *dynobj;
3175 bfd_byte *loc;
3176
3177 #ifdef DEBUG_PIC
3178 printf ("m32r_elf_finish_dynamic_symbol()\n");
3179 #endif
3180
3181 htab = m32r_elf_hash_table (info);
3182 dynobj = htab->root.dynobj;
3183
3184 if (h->plt.offset != (bfd_vma) -1)
3185 {
3186 asection *splt;
3187 asection *sgot;
3188 asection *srela;
3189
3190 bfd_vma plt_index;
3191 bfd_vma got_offset;
3192 Elf_Internal_Rela rela;
3193
3194 /* This symbol has an entry in the procedure linkage table. Set
3195 it up. */
3196
3197 BFD_ASSERT (h->dynindx != -1);
3198
3199 splt = htab->splt;
3200 sgot = htab->sgotplt;
3201 srela = htab->srelplt;
3202 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3203
3204 /* Get the index in the procedure linkage table which
3205 corresponds to this symbol. This is the index of this symbol
3206 in all the symbols for which we are making plt entries. The
3207 first entry in the procedure linkage table is reserved. */
3208 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3209
3210 /* Get the offset into the .got table of the entry that
3211 corresponds to this function. Each .got entry is 4 bytes.
3212 The first three are reserved. */
3213 got_offset = (plt_index + 3) * 4;
3214
3215 /* Fill in the entry in the procedure linkage table. */
3216 if (! info->shared)
3217 {
3218 bfd_put_32 (output_bfd,
3219 (PLT_ENTRY_WORD0b
3220 + (((sgot->output_section->vma
3221 + sgot->output_offset
3222 + got_offset) >> 16) & 0xffff)),
3223 splt->contents + h->plt.offset);
3224 bfd_put_32 (output_bfd,
3225 (PLT_ENTRY_WORD1b
3226 + ((sgot->output_section->vma
3227 + sgot->output_offset
3228 + got_offset) & 0xffff)),
3229 splt->contents + h->plt.offset + 4);
3230 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3231 splt->contents + h->plt.offset + 8);
3232 bfd_put_32 (output_bfd,
3233 (PLT_ENTRY_WORD3
3234 + plt_index * sizeof (Elf32_External_Rela)),
3235 splt->contents + h->plt.offset + 12);
3236 bfd_put_32 (output_bfd,
3237 (PLT_ENTRY_WORD4
3238 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3239 splt->contents + h->plt.offset + 16);
3240 }
3241 else
3242 {
3243 bfd_put_32 (output_bfd,
3244 PLT_ENTRY_WORD0 + got_offset,
3245 splt->contents + h->plt.offset);
3246 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3247 splt->contents + h->plt.offset + 4);
3248 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3249 splt->contents + h->plt.offset + 8);
3250 bfd_put_32 (output_bfd,
3251 (PLT_ENTRY_WORD3
3252 + plt_index * sizeof (Elf32_External_Rela)),
3253 splt->contents + h->plt.offset + 12);
3254 bfd_put_32 (output_bfd,
3255 (PLT_ENTRY_WORD4
3256 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3257 splt->contents + h->plt.offset + 16);
3258 }
3259
3260 /* Fill in the entry in the global offset table. */
3261 bfd_put_32 (output_bfd,
3262 (splt->output_section->vma
3263 + splt->output_offset
3264 + h->plt.offset
3265 + 12), /* same offset */
3266 sgot->contents + got_offset);
3267
3268 /* Fill in the entry in the .rela.plt section. */
3269 rela.r_offset = (sgot->output_section->vma
3270 + sgot->output_offset
3271 + got_offset);
3272 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3273 rela.r_addend = 0;
3274 loc = srela->contents;
3275 loc += plt_index * sizeof (Elf32_External_Rela);
3276 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3277
3278 if (!h->def_regular)
3279 {
3280 /* Mark the symbol as undefined, rather than as defined in
3281 the .plt section. Leave the value alone. */
3282 sym->st_shndx = SHN_UNDEF;
3283 }
3284 }
3285
3286 if (h->got.offset != (bfd_vma) -1)
3287 {
3288 asection *sgot;
3289 asection *srela;
3290 Elf_Internal_Rela rela;
3291
3292 /* This symbol has an entry in the global offset table. Set it
3293 up. */
3294
3295 sgot = htab->sgot;
3296 srela = htab->srelgot;
3297 BFD_ASSERT (sgot != NULL && srela != NULL);
3298
3299 rela.r_offset = (sgot->output_section->vma
3300 + sgot->output_offset
3301 + (h->got.offset &~ 1));
3302
3303 /* If this is a -Bsymbolic link, and the symbol is defined
3304 locally, we just want to emit a RELATIVE reloc. Likewise if
3305 the symbol was forced to be local because of a version file.
3306 The entry in the global offset table will already have been
3307 initialized in the relocate_section function. */
3308 if (info->shared
3309 && (info->symbolic
3310 || h->dynindx == -1
3311 || h->forced_local)
3312 && h->def_regular)
3313 {
3314 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3315 rela.r_addend = (h->root.u.def.value
3316 + h->root.u.def.section->output_section->vma
3317 + h->root.u.def.section->output_offset);
3318 }
3319 else
3320 {
3321 BFD_ASSERT ((h->got.offset & 1) == 0);
3322 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3323 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3324 rela.r_addend = 0;
3325 }
3326
3327 loc = srela->contents;
3328 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3329 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3330 ++srela->reloc_count;
3331 }
3332
3333 if (h->needs_copy)
3334 {
3335 asection *s;
3336 Elf_Internal_Rela rela;
3337
3338 /* This symbols needs a copy reloc. Set it up. */
3339
3340 BFD_ASSERT (h->dynindx != -1
3341 && (h->root.type == bfd_link_hash_defined
3342 || h->root.type == bfd_link_hash_defweak));
3343
3344 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3345 ".rela.bss");
3346 BFD_ASSERT (s != NULL);
3347
3348 rela.r_offset = (h->root.u.def.value
3349 + h->root.u.def.section->output_section->vma
3350 + h->root.u.def.section->output_offset);
3351 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3352 rela.r_addend = 0;
3353 loc = s->contents;
3354 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3355 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3356 ++s->reloc_count;
3357 }
3358
3359 /* Mark some specially defined symbols as absolute. */
3360 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3361 || h == htab->root.hgot)
3362 sym->st_shndx = SHN_ABS;
3363
3364 return TRUE;
3365 }
3366
3367
3368 /* Finish up the dynamic sections. */
3369
3370 static bfd_boolean
3371 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3372 struct bfd_link_info *info)
3373 {
3374 struct elf_m32r_link_hash_table *htab;
3375 bfd *dynobj;
3376 asection *sdyn;
3377 asection *sgot;
3378
3379 #ifdef DEBUG_PIC
3380 printf ("m32r_elf_finish_dynamic_sections()\n");
3381 #endif
3382
3383 htab = m32r_elf_hash_table (info);
3384 dynobj = htab->root.dynobj;
3385
3386 sgot = htab->sgotplt;
3387 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3388
3389 if (htab->root.dynamic_sections_created)
3390 {
3391 asection *splt;
3392 Elf32_External_Dyn *dyncon, *dynconend;
3393
3394 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3395
3396 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3397 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3398
3399 for (; dyncon < dynconend; dyncon++)
3400 {
3401 Elf_Internal_Dyn dyn;
3402 const char *name;
3403 asection *s;
3404
3405 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3406
3407 switch (dyn.d_tag)
3408 {
3409 default:
3410 break;
3411
3412 case DT_PLTGOT:
3413 name = ".got";
3414 s = htab->sgot->output_section;
3415 goto get_vma;
3416 case DT_JMPREL:
3417 name = ".rela.plt";
3418 s = htab->srelplt->output_section;
3419 get_vma:
3420 BFD_ASSERT (s != NULL);
3421 dyn.d_un.d_ptr = s->vma;
3422 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3423 break;
3424
3425 case DT_PLTRELSZ:
3426 s = htab->srelplt->output_section;
3427 BFD_ASSERT (s != NULL);
3428 dyn.d_un.d_val = s->size;
3429 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3430 break;
3431
3432 case DT_RELASZ:
3433 /* My reading of the SVR4 ABI indicates that the
3434 procedure linkage table relocs (DT_JMPREL) should be
3435 included in the overall relocs (DT_RELA). This is
3436 what Solaris does. However, UnixWare can not handle
3437 that case. Therefore, we override the DT_RELASZ entry
3438 here to make it not include the JMPREL relocs. Since
3439 the linker script arranges for .rela.plt to follow all
3440 other relocation sections, we don't have to worry
3441 about changing the DT_RELA entry. */
3442 if (htab->srelplt != NULL)
3443 {
3444 s = htab->srelplt->output_section;
3445 dyn.d_un.d_val -= s->size;
3446 }
3447 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3448 break;
3449 }
3450 }
3451
3452 /* Fill in the first entry in the procedure linkage table. */
3453 splt = htab->splt;
3454 if (splt && splt->size > 0)
3455 {
3456 if (info->shared)
3457 {
3458 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3459 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3460 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3461 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3462 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3463 }
3464 else
3465 {
3466 unsigned long addr;
3467 /* addr = .got + 4 */
3468 addr = sgot->output_section->vma + sgot->output_offset + 4;
3469 bfd_put_32 (output_bfd,
3470 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3471 splt->contents);
3472 bfd_put_32 (output_bfd,
3473 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3474 splt->contents + 4);
3475 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3476 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3477 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3478 }
3479
3480 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3481 PLT_ENTRY_SIZE;
3482 }
3483 }
3484
3485 /* Fill in the first three entries in the global offset table. */
3486 if (sgot && sgot->size > 0)
3487 {
3488 if (sdyn == NULL)
3489 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3490 else
3491 bfd_put_32 (output_bfd,
3492 sdyn->output_section->vma + sdyn->output_offset,
3493 sgot->contents);
3494 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3495 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3496
3497 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3498 }
3499
3500 return TRUE;
3501 }
3502
3503 \f
3504 /* Set the right machine number. */
3505
3506 static bfd_boolean
3507 m32r_elf_object_p (bfd *abfd)
3508 {
3509 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3510 {
3511 default:
3512 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3513 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3514 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3515 }
3516 return TRUE;
3517 }
3518
3519 /* Store the machine number in the flags field. */
3520
3521 static void
3522 m32r_elf_final_write_processing (bfd *abfd,
3523 bfd_boolean linker ATTRIBUTE_UNUSED)
3524 {
3525 unsigned long val;
3526
3527 switch (bfd_get_mach (abfd))
3528 {
3529 default:
3530 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3531 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3532 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3533 }
3534
3535 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3536 elf_elfheader (abfd)->e_flags |= val;
3537 }
3538
3539 /* Function to keep M32R specific file flags. */
3540
3541 static bfd_boolean
3542 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3543 {
3544 BFD_ASSERT (!elf_flags_init (abfd)
3545 || elf_elfheader (abfd)->e_flags == flags);
3546
3547 elf_elfheader (abfd)->e_flags = flags;
3548 elf_flags_init (abfd) = TRUE;
3549 return TRUE;
3550 }
3551
3552 /* Merge backend specific data from an object file to the output
3553 object file when linking. */
3554
3555 static bfd_boolean
3556 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3557 {
3558 flagword out_flags;
3559 flagword in_flags;
3560
3561 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3562 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3563 return TRUE;
3564
3565 in_flags = elf_elfheader (ibfd)->e_flags;
3566 out_flags = elf_elfheader (obfd)->e_flags;
3567
3568 if (! elf_flags_init (obfd))
3569 {
3570 /* If the input is the default architecture then do not
3571 bother setting the flags for the output architecture,
3572 instead allow future merges to do this. If no future
3573 merges ever set these flags then they will retain their
3574 unitialised values, which surprise surprise, correspond
3575 to the default values. */
3576 if (bfd_get_arch_info (ibfd)->the_default)
3577 return TRUE;
3578
3579 elf_flags_init (obfd) = TRUE;
3580 elf_elfheader (obfd)->e_flags = in_flags;
3581
3582 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3583 && bfd_get_arch_info (obfd)->the_default)
3584 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3585 bfd_get_mach (ibfd));
3586
3587 return TRUE;
3588 }
3589
3590 /* Check flag compatibility. */
3591 if (in_flags == out_flags)
3592 return TRUE;
3593
3594 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3595 {
3596 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3597 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3598 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3599 {
3600 (*_bfd_error_handler)
3601 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3602
3603 bfd_set_error (bfd_error_bad_value);
3604 return FALSE;
3605 }
3606 }
3607
3608 return TRUE;
3609 }
3610
3611 /* Display the flags field. */
3612
3613 static bfd_boolean
3614 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3615 {
3616 FILE * file = (FILE *) ptr;
3617
3618 BFD_ASSERT (abfd != NULL && ptr != NULL);
3619
3620 _bfd_elf_print_private_bfd_data (abfd, ptr);
3621
3622 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3623
3624 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3625 {
3626 default:
3627 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3628 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3629 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3630 }
3631
3632 fputc ('\n', file);
3633
3634 return TRUE;
3635 }
3636
3637 static asection *
3638 m32r_elf_gc_mark_hook (asection *sec,
3639 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3640 Elf_Internal_Rela *rel,
3641 struct elf_link_hash_entry *h,
3642 Elf_Internal_Sym *sym)
3643 {
3644 if (h != NULL)
3645 {
3646 switch (ELF32_R_TYPE (rel->r_info))
3647 {
3648 case R_M32R_GNU_VTINHERIT:
3649 case R_M32R_GNU_VTENTRY:
3650 case R_M32R_RELA_GNU_VTINHERIT:
3651 case R_M32R_RELA_GNU_VTENTRY:
3652 break;
3653
3654 default:
3655 switch (h->root.type)
3656 {
3657 case bfd_link_hash_defined:
3658 case bfd_link_hash_defweak:
3659 return h->root.u.def.section;
3660
3661 case bfd_link_hash_common:
3662 return h->root.u.c.p->section;
3663
3664 default:
3665 break;
3666 }
3667 }
3668 }
3669 else
3670 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3671
3672 return NULL;
3673 }
3674
3675 static bfd_boolean
3676 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3677 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3678 asection *sec ATTRIBUTE_UNUSED,
3679 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3680 {
3681 /* Update the got entry reference counts for the section being removed. */
3682 Elf_Internal_Shdr *symtab_hdr;
3683 struct elf_link_hash_entry **sym_hashes;
3684 bfd_signed_vma *local_got_refcounts;
3685 const Elf_Internal_Rela *rel, *relend;
3686
3687 elf_section_data (sec)->local_dynrel = NULL;
3688
3689 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3690 sym_hashes = elf_sym_hashes (abfd);
3691 local_got_refcounts = elf_local_got_refcounts (abfd);
3692
3693 relend = relocs + sec->reloc_count;
3694 for (rel = relocs; rel < relend; rel++)
3695 {
3696 unsigned long r_symndx;
3697 struct elf_link_hash_entry *h = NULL;
3698
3699 r_symndx = ELF32_R_SYM (rel->r_info);
3700 if (r_symndx >= symtab_hdr->sh_info)
3701 {
3702 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3703 while (h->root.type == bfd_link_hash_indirect
3704 || h->root.type == bfd_link_hash_warning)
3705 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3706 }
3707
3708 switch (ELF32_R_TYPE (rel->r_info))
3709 {
3710 case R_M32R_GOT16_HI_ULO:
3711 case R_M32R_GOT16_HI_SLO:
3712 case R_M32R_GOT16_LO:
3713 case R_M32R_GOTOFF:
3714 case R_M32R_GOTOFF_HI_ULO:
3715 case R_M32R_GOTOFF_HI_SLO:
3716 case R_M32R_GOTOFF_LO:
3717 case R_M32R_GOT24:
3718 case R_M32R_GOTPC_HI_ULO:
3719 case R_M32R_GOTPC_HI_SLO:
3720 case R_M32R_GOTPC_LO:
3721 case R_M32R_GOTPC24:
3722 if (h != NULL)
3723 {
3724 if (h->got.refcount > 0)
3725 h->got.refcount--;
3726 }
3727 else
3728 {
3729 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3730 local_got_refcounts[r_symndx]--;
3731 }
3732 break;
3733
3734 case R_M32R_16_RELA:
3735 case R_M32R_24_RELA:
3736 case R_M32R_32_RELA:
3737 case R_M32R_REL32:
3738 case R_M32R_HI16_ULO_RELA:
3739 case R_M32R_HI16_SLO_RELA:
3740 case R_M32R_LO16_RELA:
3741 case R_M32R_SDA16_RELA:
3742 case R_M32R_10_PCREL_RELA:
3743 case R_M32R_18_PCREL_RELA:
3744 case R_M32R_26_PCREL_RELA:
3745 if (h != NULL)
3746 {
3747 struct elf_m32r_link_hash_entry *eh;
3748 struct elf_m32r_dyn_relocs **pp;
3749 struct elf_m32r_dyn_relocs *p;
3750
3751 if (!info->shared && h->plt.refcount > 0)
3752 h->plt.refcount -= 1;
3753
3754 eh = (struct elf_m32r_link_hash_entry *) h;
3755
3756 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3757 if (p->sec == sec)
3758 {
3759 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3760 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3761 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3762 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3763 p->pc_count -= 1;
3764 p->count -= 1;
3765 if (p->count == 0)
3766 *pp = p->next;
3767 break;
3768 }
3769 }
3770 break;
3771
3772 case R_M32R_26_PLTREL:
3773 if (h != NULL)
3774 {
3775 if (h->plt.refcount > 0)
3776 h->plt.refcount--;
3777 }
3778 break;
3779
3780 default:
3781 break;
3782 }
3783 }
3784
3785 return TRUE;
3786 }
3787
3788 /* Look through the relocs for a section during the first phase.
3789 Since we don't do .gots or .plts, we just need to consider the
3790 virtual table relocs for gc. */
3791
3792 static bfd_boolean
3793 m32r_elf_check_relocs (bfd *abfd,
3794 struct bfd_link_info *info,
3795 asection *sec,
3796 const Elf_Internal_Rela *relocs)
3797 {
3798 Elf_Internal_Shdr *symtab_hdr;
3799 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3800 const Elf_Internal_Rela *rel;
3801 const Elf_Internal_Rela *rel_end;
3802 struct elf_m32r_link_hash_table *htab;
3803 bfd *dynobj;
3804 bfd_vma *local_got_offsets;
3805 asection *sgot, *srelgot, *sreloc;
3806
3807 if (info->relocatable)
3808 return TRUE;
3809
3810 sgot = srelgot = sreloc = NULL;
3811
3812 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3813 sym_hashes = elf_sym_hashes (abfd);
3814 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3815 if (!elf_bad_symtab (abfd))
3816 sym_hashes_end -= symtab_hdr->sh_info;
3817
3818 htab = m32r_elf_hash_table (info);
3819 dynobj = htab->root.dynobj;
3820 local_got_offsets = elf_local_got_offsets (abfd);
3821
3822 rel_end = relocs + sec->reloc_count;
3823 for (rel = relocs; rel < rel_end; rel++)
3824 {
3825 int r_type;
3826 struct elf_link_hash_entry *h;
3827 unsigned long r_symndx;
3828
3829 r_symndx = ELF32_R_SYM (rel->r_info);
3830 r_type = ELF32_R_TYPE (rel->r_info);
3831 if (r_symndx < symtab_hdr->sh_info)
3832 h = NULL;
3833 else
3834 {
3835 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3836 while (h->root.type == bfd_link_hash_indirect
3837 || h->root.type == bfd_link_hash_warning)
3838 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3839 }
3840
3841 /* Some relocs require a global offset table. */
3842 if (htab->sgot == NULL)
3843 {
3844 switch (r_type)
3845 {
3846 case R_M32R_GOT16_HI_ULO:
3847 case R_M32R_GOT16_HI_SLO:
3848 case R_M32R_GOTOFF:
3849 case R_M32R_GOTOFF_HI_ULO:
3850 case R_M32R_GOTOFF_HI_SLO:
3851 case R_M32R_GOTOFF_LO:
3852 case R_M32R_GOT16_LO:
3853 case R_M32R_GOTPC24:
3854 case R_M32R_GOTPC_HI_ULO:
3855 case R_M32R_GOTPC_HI_SLO:
3856 case R_M32R_GOTPC_LO:
3857 case R_M32R_GOT24:
3858 if (dynobj == NULL)
3859 htab->root.dynobj = dynobj = abfd;
3860 if (! create_got_section (dynobj, info))
3861 return FALSE;
3862 break;
3863
3864 default:
3865 break;
3866 }
3867 }
3868
3869 switch (r_type)
3870 {
3871 case R_M32R_GOT16_HI_ULO:
3872 case R_M32R_GOT16_HI_SLO:
3873 case R_M32R_GOT16_LO:
3874 case R_M32R_GOT24:
3875
3876 if (h != NULL)
3877 h->got.refcount += 1;
3878 else
3879 {
3880 bfd_signed_vma *local_got_refcounts;
3881
3882 /* This is a global offset table entry for a local
3883 symbol. */
3884 local_got_refcounts = elf_local_got_refcounts (abfd);
3885 if (local_got_refcounts == NULL)
3886 {
3887 bfd_size_type size;
3888
3889 size = symtab_hdr->sh_info;
3890 size *= sizeof (bfd_signed_vma);
3891 local_got_refcounts = bfd_zalloc (abfd, size);
3892 if (local_got_refcounts == NULL)
3893 return FALSE;
3894 elf_local_got_refcounts (abfd) = local_got_refcounts;
3895 }
3896 local_got_refcounts[r_symndx] += 1;
3897 }
3898 break;
3899
3900 case R_M32R_26_PLTREL:
3901 /* This symbol requires a procedure linkage table entry. We
3902 actually build the entry in adjust_dynamic_symbol,
3903 because this might be a case of linking PIC code without
3904 linking in any dynamic objects, in which case we don't
3905 need to generate a procedure linkage table after all. */
3906
3907 /* If this is a local symbol, we resolve it directly without
3908 creating a procedure linkage table entry. */
3909 if (h == NULL)
3910 continue;
3911
3912 if (h->forced_local)
3913 break;
3914
3915 h->needs_plt = 1;
3916 h->plt.refcount += 1;
3917 break;
3918
3919 case R_M32R_16_RELA:
3920 case R_M32R_24_RELA:
3921 case R_M32R_32_RELA:
3922 case R_M32R_REL32:
3923 case R_M32R_HI16_ULO_RELA:
3924 case R_M32R_HI16_SLO_RELA:
3925 case R_M32R_LO16_RELA:
3926 case R_M32R_SDA16_RELA:
3927 case R_M32R_10_PCREL_RELA:
3928 case R_M32R_18_PCREL_RELA:
3929 case R_M32R_26_PCREL_RELA:
3930
3931 if (h != NULL && !info->shared)
3932 {
3933 h->non_got_ref = 1;
3934 h->plt.refcount += 1;
3935 }
3936
3937 /* If we are creating a shared library, and this is a reloc
3938 against a global symbol, or a non PC relative reloc
3939 against a local symbol, then we need to copy the reloc
3940 into the shared library. However, if we are linking with
3941 -Bsymbolic, we do not need to copy a reloc against a
3942 global symbol which is defined in an object we are
3943 including in the link (i.e., DEF_REGULAR is set). At
3944 this point we have not seen all the input files, so it is
3945 possible that DEF_REGULAR is not set now but will be set
3946 later (it is never cleared). We account for that
3947 possibility below by storing information in the
3948 dyn_relocs field of the hash table entry. A similar
3949 situation occurs when creating shared libraries and symbol
3950 visibility changes render the symbol local.
3951
3952 If on the other hand, we are creating an executable, we
3953 may need to keep relocations for symbols satisfied by a
3954 dynamic library if we manage to avoid copy relocs for the
3955 symbol. */
3956 if ((info->shared
3957 && (sec->flags & SEC_ALLOC) != 0
3958 && (( r_type != R_M32R_26_PCREL_RELA
3959 && r_type != R_M32R_18_PCREL_RELA
3960 && r_type != R_M32R_10_PCREL_RELA
3961 && r_type != R_M32R_REL32)
3962 || (h != NULL
3963 && (! info->symbolic
3964 || h->root.type == bfd_link_hash_defweak
3965 || !h->def_regular))))
3966 || (!info->shared
3967 && (sec->flags & SEC_ALLOC) != 0
3968 && h != NULL
3969 && (h->root.type == bfd_link_hash_defweak
3970 || !h->def_regular)))
3971 {
3972 struct elf_m32r_dyn_relocs *p;
3973 struct elf_m32r_dyn_relocs **head;
3974
3975 if (dynobj == NULL)
3976 htab->root.dynobj = dynobj = abfd;
3977
3978 /* When creating a shared object, we must copy these
3979 relocs into the output file. We create a reloc
3980 section in dynobj and make room for the reloc. */
3981 if (sreloc == NULL)
3982 {
3983 const char *name;
3984
3985 name = (bfd_elf_string_from_elf_section
3986 (abfd,
3987 elf_elfheader (abfd)->e_shstrndx,
3988 elf_section_data (sec)->rel_hdr.sh_name));
3989 if (name == NULL)
3990 return FALSE;
3991
3992 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3993 && strcmp (bfd_get_section_name (abfd, sec),
3994 name + 5) == 0);
3995
3996 sreloc = bfd_get_section_by_name (dynobj, name);
3997 if (sreloc == NULL)
3998 {
3999 flagword flags;
4000
4001 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4002 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4003 if ((sec->flags & SEC_ALLOC) != 0)
4004 flags |= SEC_ALLOC | SEC_LOAD;
4005 sreloc = bfd_make_section_with_flags (dynobj,
4006 name,
4007 flags);
4008 if (sreloc == NULL
4009 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
4010 return FALSE;
4011 }
4012 elf_section_data (sec)->sreloc = sreloc;
4013 }
4014
4015 /* If this is a global symbol, we count the number of
4016 relocations we need for this symbol. */
4017 if (h != NULL)
4018 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
4019 else
4020 {
4021 asection *s;
4022 void *vpp;
4023
4024 /* Track dynamic relocs needed for local syms too. */
4025 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4026 sec, r_symndx);
4027 if (s == NULL)
4028 return FALSE;
4029
4030 vpp = &elf_section_data (s)->local_dynrel;
4031 head = (struct elf_m32r_dyn_relocs **) vpp;
4032 }
4033
4034 p = *head;
4035 if (p == NULL || p->sec != sec)
4036 {
4037 bfd_size_type amt = sizeof (*p);
4038
4039 p = bfd_alloc (dynobj, amt);
4040 if (p == NULL)
4041 return FALSE;
4042 p->next = *head;
4043 *head = p;
4044 p->sec = sec;
4045 p->count = 0;
4046 p->pc_count = 0;
4047 }
4048
4049 p->count += 1;
4050 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4051 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
4052 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
4053 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
4054 p->pc_count += 1;
4055 }
4056 break;
4057
4058 /* This relocation describes the C++ object vtable hierarchy.
4059 Reconstruct it for later use during GC. */
4060 case R_M32R_RELA_GNU_VTINHERIT:
4061 case R_M32R_GNU_VTINHERIT:
4062 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4063 return FALSE;
4064 break;
4065
4066 /* This relocation describes which C++ vtable entries are actually
4067 used. Record for later use during GC. */
4068 case R_M32R_GNU_VTENTRY:
4069 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4070 return FALSE;
4071 break;
4072 case R_M32R_RELA_GNU_VTENTRY:
4073 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4074 return FALSE;
4075 break;
4076 }
4077 }
4078
4079 return TRUE;
4080 }
4081
4082 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4083 {
4084 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4085 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4086 { NULL, 0, 0, 0, 0 }
4087 };
4088
4089 static bfd_boolean
4090 m32r_elf_fake_sections (bfd *abfd,
4091 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4092 asection *sec)
4093 {
4094 const char *name;
4095
4096 name = bfd_get_section_name (abfd, sec);
4097
4098 /* The generic elf_fake_sections will set up REL_HDR using the
4099 default kind of relocations. But, we may actually need both
4100 kinds of relocations, so we set up the second header here.
4101
4102 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4103 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4104 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4105 of the resulting empty .rela.<section> sections starts with
4106 sh_offset == object size, and ld doesn't allow that. While the check
4107 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4108 avoided by not emitting those useless sections in the first place. */
4109 if ((sec->flags & SEC_RELOC) != 0)
4110 {
4111 struct bfd_elf_section_data *esd;
4112 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4113
4114 esd = elf_section_data (sec);
4115 BFD_ASSERT (esd->rel_hdr2 == NULL);
4116 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4117 if (!esd->rel_hdr2)
4118 return FALSE;
4119 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4120 !sec->use_rela_p);
4121 }
4122
4123 return TRUE;
4124 }
4125
4126 static enum elf_reloc_type_class
4127 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4128 {
4129 switch ((int) ELF32_R_TYPE (rela->r_info))
4130 {
4131 case R_M32R_RELATIVE: return reloc_class_relative;
4132 case R_M32R_JMP_SLOT: return reloc_class_plt;
4133 case R_M32R_COPY: return reloc_class_copy;
4134 default: return reloc_class_normal;
4135 }
4136 }
4137 \f
4138 #define ELF_ARCH bfd_arch_m32r
4139 #define ELF_MACHINE_CODE EM_M32R
4140 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4141 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4142
4143 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4144 #define TARGET_BIG_NAME "elf32-m32r"
4145 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4146 #define TARGET_LITTLE_NAME "elf32-m32rle"
4147
4148 #define elf_info_to_howto m32r_info_to_howto
4149 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4150 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4151 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4152 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4153 #define elf_backend_relocate_section m32r_elf_relocate_section
4154 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4155 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4156 #define elf_backend_check_relocs m32r_elf_check_relocs
4157
4158 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4159 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4160 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4161 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4162 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4163 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4164 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4165 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4166
4167 #define elf_backend_can_gc_sections 1
4168 /*#if !USE_REL
4169 #define elf_backend_rela_normal 1
4170 #endif*/
4171 #define elf_backend_can_refcount 1
4172 #define elf_backend_want_got_plt 1
4173 #define elf_backend_plt_readonly 1
4174 #define elf_backend_want_plt_sym 0
4175 #define elf_backend_got_header_size 12
4176
4177 #define elf_backend_may_use_rel_p 1
4178 #ifdef USE_M32R_OLD_RELOC
4179 #define elf_backend_default_use_rela_p 0
4180 #define elf_backend_may_use_rela_p 0
4181 #else
4182 #define elf_backend_default_use_rela_p 1
4183 #define elf_backend_may_use_rela_p 1
4184 #define elf_backend_fake_sections m32r_elf_fake_sections
4185 #endif
4186
4187 #define elf_backend_object_p m32r_elf_object_p
4188 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4189 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4190 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4191 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4192 #define elf_backend_special_sections m32r_elf_special_sections
4193
4194 #include "elf32-target.h"
4195
4196 #undef ELF_MAXPAGESIZE
4197 #define ELF_MAXPAGESIZE 0x1000
4198
4199 #undef TARGET_BIG_SYM
4200 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4201 #undef TARGET_BIG_NAME
4202 #define TARGET_BIG_NAME "elf32-m32r-linux"
4203 #undef TARGET_LITTLE_SYM
4204 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4205 #undef TARGET_LITTLE_NAME
4206 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4207 #undef elf32_bed
4208 #define elf32_bed elf32_m32r_lin_bed
4209
4210 #include "elf32-target.h"
4211