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[binutils-gdb.git] / bfd / elf32-m32r.c
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1 /* M32R-specific support for 32-bit ELF.
2 Copyright (C) 1996-2022 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/m32r.h"
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
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
36 #ifndef USE_REL
37 #define USE_REL 0
38 #endif */
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
41 /* Functions for the M32R ELF linker. */
43 /* The name of the dynamic interpreter. This is put in the .interp
44 section. */
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
48 /* The nop opcode we use. */
50 #define M32R_NOP 0x7000f000
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
54 /* The size in bytes of an entry in the procedure linkage table. */
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
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. */
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 */
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 */
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. */
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
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)
96 bfd_signed_vma relocation;
97 unsigned long x;
98 bfd_reloc_status_type status;
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
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);
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
114 else
115 status = bfd_reloc_ok;
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);
123 return status;
126 /* Handle the R_M32R_10_PCREL reloc. */
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)
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))
143 reloc_entry->address += input_section->output_offset;
144 return bfd_reloc_ok;
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
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);
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
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)
173 bfd_reloc_status_type ret;
174 bfd_vma relocation;
175 bfd_byte *inplace_address;
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)
184 reloc_entry->address += input_section->output_offset;
185 return bfd_reloc_ok;
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. */
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;
198 ret = bfd_reloc_ok;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
205 relocation = 0;
206 else
207 relocation = symbol->value;
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
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))
224 switch (bfd_get_reloc_size (reloc_entry->howto))
226 case 2:
228 short x = bfd_get_16 (input_bfd, inplace_address);
229 DOIT (x);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
232 break;
233 case 4:
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);
239 break;
240 default:
241 BFD_ASSERT (0);
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
247 return ret;
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_. */
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)
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))
271 reloc_entry->address += input_section->output_offset;
272 return bfd_reloc_ok;
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
281 abort ();
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. */
301 struct m32r_hi16
303 struct m32r_hi16 *next;
304 bfd_byte *addr;
305 bfd_vma addend;
308 /* FIXME: This should not be a static variable. */
310 static struct m32r_hi16 *m32r_hi16_list;
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)
321 bfd_reloc_status_type ret;
322 bfd_vma relocation;
323 struct m32r_hi16 *n;
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)
332 reloc_entry->address += input_section->output_offset;
333 return bfd_reloc_ok;
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;
340 ret = bfd_reloc_ok;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
345 if (bfd_is_com_section (symbol->section))
346 relocation = 0;
347 else
348 relocation = symbol->value;
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
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;
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
366 return ret;
369 /* Handle an M32R ELF HI16 reloc. */
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)
379 unsigned long insn;
380 bfd_vma addlo;
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
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;
390 addend += ((insn & 0xffff) << 16) + addlo;
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
395 addend += 0x10000;
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
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. */
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)
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)
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
426 if (m32r_hi16_list != NULL)
428 struct m32r_hi16 *l;
430 l = m32r_hi16_list;
431 while (l != NULL)
433 unsigned long insn;
434 unsigned long val;
435 unsigned long vallo;
436 struct m32r_hi16 *next;
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;
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
449 val += 0x10000;
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
454 next = l->next;
455 free (l);
456 l = next;
459 m32r_hi16_list = NULL;
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);
472 static reloc_howto_type m32r_elf_howto_table[] =
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
476 0, /* rightshift */
477 0, /* size */
478 0, /* bitsize */
479 false, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_dont, /* 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 */
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
491 0, /* rightshift */
492 2, /* size */
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 */
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
506 0, /* rightshift */
507 4, /* size */
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 */
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
521 0, /* rightshift */
522 4, /* size */
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 */
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 2, /* size */
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 */
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
559 4, /* size */
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 */
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 4, /* size */
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 */
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
593 4, /* size */
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 */
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
607 16, /* rightshift */
608 4, /* size */
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 */
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
623 4, /* size */
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 */
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
637 0, /* rightshift */
638 4, /* size */
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 */
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 4, /* size */
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 */
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 4, /* size */
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 */
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),
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
703 0, /* rightshift */
704 2, /* size */
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 */
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
719 4, /* size */
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 */
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
733 0, /* rightshift */
734 4, /* size */
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 */
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 2, /* size */
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 */
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 4, /* size */
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 */
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 4, /* size */
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 */
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 4, /* size */
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 */
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 4, /* size */
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 */
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 4, /* size */
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 */
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 4, /* size */
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 */
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 4, /* size */
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 */
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 4, /* size */
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 */
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 4, /* size */
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 */
895 EMPTY_HOWTO (46),
896 EMPTY_HOWTO (47),
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 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 4, /* size */
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 */
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 4, /* size */
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 */
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
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 4, /* size */
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 */
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 4, /* size */
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 */
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 4, /* size */
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 */
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 4, /* size */
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 */
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1171 struct m32r_reloc_map
1173 bfd_reloc_code_real_type bfd_reloc_val;
1174 unsigned char elf_reloc_val;
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old[] =
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 },
1194 #else
1195 static const struct m32r_reloc_map m32r_reloc_map[] =
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 },
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 },
1230 #endif
1232 static reloc_howto_type *
1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 bfd_reloc_code_real_type code)
1236 unsigned int i;
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];
1245 #else /* ! USE_M32R_OLD_RELOC */
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
1254 return NULL;
1257 static reloc_howto_type *
1258 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1259 const char *r_name)
1261 unsigned int i;
1263 for (i = 0;
1264 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
1265 i++)
1266 if (m32r_elf_howto_table[i].name != NULL
1267 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
1268 return &m32r_elf_howto_table[i];
1270 return NULL;
1273 /* Set the howto pointer for an M32R ELF reloc. */
1275 static bool
1276 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1277 arelent *cache_ptr,
1278 Elf_Internal_Rela *dst)
1280 unsigned int r_type;
1282 r_type = ELF32_R_TYPE (dst->r_info);
1283 if (r_type > (unsigned int) R_M32R_GNU_VTENTRY)
1285 /* xgettext:c-format */
1286 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
1287 abfd, r_type);
1288 bfd_set_error (bfd_error_bad_value);
1289 return false;
1291 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1292 return true;
1295 static bool
1296 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1297 arelent *cache_ptr,
1298 Elf_Internal_Rela *dst)
1300 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
1302 if (r_type == (unsigned int) R_M32R_NONE
1303 || ((r_type > (unsigned int) R_M32R_GNU_VTENTRY)
1304 && (r_type < (unsigned int) R_M32R_max)))
1306 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1307 return true;
1310 /* xgettext:c-format */
1311 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
1312 bfd_set_error (bfd_error_bad_value);
1313 return false;
1317 /* Given a BFD section, try to locate the corresponding ELF section
1318 index. */
1320 static bool
1321 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1322 asection *sec,
1323 int *retval)
1325 if (strcmp (bfd_section_name (sec), ".scommon") == 0)
1327 *retval = SHN_M32R_SCOMMON;
1328 return true;
1330 return false;
1333 /* M32R ELF uses two common sections. One is the usual one, and the other
1334 is for small objects. All the small objects are kept together, and then
1335 referenced via one register, which yields faster assembler code. It is
1336 up to the compiler to emit an instruction to load the register with
1337 _SDA_BASE. This is what we use for the small common section. This
1338 approach is copied from elf32-mips.c. */
1339 static asection m32r_elf_scom_section;
1340 static const asymbol m32r_elf_scom_symbol =
1341 GLOBAL_SYM_INIT (".scommon", &m32r_elf_scom_section);
1342 static asection m32r_elf_scom_section =
1343 BFD_FAKE_SECTION (m32r_elf_scom_section, &m32r_elf_scom_symbol,
1344 ".scommon", 0, SEC_IS_COMMON | SEC_SMALL_DATA);
1346 /* Handle the special M32R section numbers that a symbol may use. */
1348 static void
1349 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1351 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1353 switch (elfsym->internal_elf_sym.st_shndx)
1355 case SHN_M32R_SCOMMON:
1356 asym->section = &m32r_elf_scom_section;
1357 asym->value = elfsym->internal_elf_sym.st_size;
1358 break;
1362 /* Hook called by the linker routine which adds symbols from an object
1363 file. We must handle the special M32R section numbers here.
1364 We also keep watching for whether we need to create the sdata special
1365 linker sections. */
1367 static bool
1368 m32r_elf_add_symbol_hook (bfd *abfd,
1369 struct bfd_link_info *info,
1370 Elf_Internal_Sym *sym,
1371 const char **namep,
1372 flagword *flagsp ATTRIBUTE_UNUSED,
1373 asection **secp,
1374 bfd_vma *valp)
1376 if (! bfd_link_relocatable (info)
1377 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1378 && strcmp (*namep, "_SDA_BASE_") == 0
1379 && is_elf_hash_table (info->hash))
1381 /* This is simpler than using _bfd_elf_create_linker_section
1382 (our needs are simpler than ppc's needs). Also
1383 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1384 section already exists a new one is created that follows it which
1385 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1386 struct elf_link_hash_entry *h;
1387 struct bfd_link_hash_entry *bh;
1388 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1390 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1391 if (s == NULL)
1393 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1394 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1396 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1397 flags);
1398 if (s == NULL)
1399 return false;
1400 if (!bfd_set_section_alignment (s, 2))
1401 return false;
1404 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1405 false, false, false);
1407 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1408 && !(_bfd_generic_link_add_one_symbol (info,
1409 abfd,
1410 "_SDA_BASE_",
1411 BSF_GLOBAL,
1413 (bfd_vma) 32768,
1414 NULL,
1415 false,
1416 get_elf_backend_data (abfd)->collect,
1417 &bh)))
1418 return false;
1419 h = (struct elf_link_hash_entry *) bh;
1420 h->type = STT_OBJECT;
1423 switch (sym->st_shndx)
1425 case SHN_M32R_SCOMMON:
1426 *secp = bfd_make_section_old_way (abfd, ".scommon");
1427 (*secp)->flags |= SEC_IS_COMMON | SEC_SMALL_DATA;
1428 *valp = sym->st_size;
1429 break;
1432 return true;
1435 /* We have to figure out the SDA_BASE value, so that we can adjust the
1436 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1437 BFD. If we can't find it, we're stuck. We cache it in the ELF
1438 target data. We don't need to adjust the symbol value for an
1439 external symbol if we are producing relocatable output. */
1441 static bfd_reloc_status_type
1442 m32r_elf_final_sda_base (bfd *output_bfd,
1443 struct bfd_link_info *info,
1444 const char **error_message,
1445 bfd_vma *psb)
1447 if (elf_gp (output_bfd) == 0)
1449 struct bfd_link_hash_entry *h;
1451 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", false, false, true);
1452 if (h != NULL && h->type == bfd_link_hash_defined)
1453 elf_gp (output_bfd) = (h->u.def.value
1454 + h->u.def.section->output_section->vma
1455 + h->u.def.section->output_offset);
1456 else
1458 /* Only get the error once. */
1459 *psb = elf_gp (output_bfd) = 4;
1460 *error_message =
1461 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1462 return bfd_reloc_dangerous;
1465 *psb = elf_gp (output_bfd);
1466 return bfd_reloc_ok;
1469 /* Return size of a PLT entry. */
1470 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1472 /* The m32r linker needs to keep track of the number of relocs that it
1473 decides to copy in check_relocs for each symbol. This is so that
1474 it can discard PC relative relocs if it doesn't need them when
1475 linking with -Bsymbolic. We store the information in a field
1476 extending the regular ELF linker hash table. */
1478 /* This structure keeps track of the number of PC relative relocs we
1479 have copied for a given symbol. */
1481 struct elf_m32r_pcrel_relocs_copied
1483 /* Next section. */
1484 struct elf_m32r_pcrel_relocs_copied *next;
1485 /* A section in dynobj. */
1486 asection *section;
1487 /* Number of relocs copied in this section. */
1488 bfd_size_type count;
1491 /* Traverse an m32r ELF linker hash table. */
1493 #define m32r_elf_link_hash_traverse(table, func, info) \
1494 (elf_link_hash_traverse \
1495 (&(table)->root, \
1496 (bool (*) (struct elf_link_hash_entry *, void *)) (func), \
1497 (info)))
1499 /* Get the m32r ELF linker hash table from a link_info structure. */
1501 #define m32r_elf_hash_table(p) \
1502 ((is_elf_hash_table ((p)->hash) \
1503 && elf_hash_table_id (elf_hash_table (p)) == M32R_ELF_DATA) \
1504 ? (struct elf_link_hash_table *) (p)->hash : NULL)
1506 /* Create an m32r ELF linker hash table. */
1508 static struct bfd_link_hash_table *
1509 m32r_elf_link_hash_table_create (bfd *abfd)
1511 struct elf_link_hash_table *ret;
1512 size_t amt = sizeof (struct elf_link_hash_table);
1514 ret = bfd_zmalloc (amt);
1515 if (ret == NULL)
1516 return NULL;
1518 if (!_bfd_elf_link_hash_table_init (ret, abfd,
1519 _bfd_elf_link_hash_newfunc,
1520 sizeof (struct elf_link_hash_entry),
1521 M32R_ELF_DATA))
1523 free (ret);
1524 return NULL;
1527 return &ret->root;
1530 /* Create dynamic sections when linking against a dynamic object. */
1532 static bool
1533 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1535 struct elf_link_hash_table *htab;
1536 flagword flags, pltflags;
1537 asection *s;
1538 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1539 int ptralign = 2; /* 32bit */
1541 htab = m32r_elf_hash_table (info);
1542 if (htab == NULL)
1543 return false;
1545 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1546 .rel[a].bss sections. */
1547 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1548 | SEC_LINKER_CREATED);
1550 pltflags = flags;
1551 pltflags |= SEC_CODE;
1552 if (bed->plt_not_loaded)
1553 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1554 if (bed->plt_readonly)
1555 pltflags |= SEC_READONLY;
1557 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
1558 htab->splt = s;
1559 if (s == NULL
1560 || !bfd_set_section_alignment (s, bed->plt_alignment))
1561 return false;
1563 if (bed->want_plt_sym)
1565 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1566 .plt section. */
1567 struct bfd_link_hash_entry *bh = NULL;
1568 struct elf_link_hash_entry *h;
1570 if (! (_bfd_generic_link_add_one_symbol
1571 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1572 (bfd_vma) 0, NULL, false,
1573 get_elf_backend_data (abfd)->collect, &bh)))
1574 return false;
1575 h = (struct elf_link_hash_entry *) bh;
1576 h->def_regular = 1;
1577 h->type = STT_OBJECT;
1578 htab->hplt = h;
1580 if (bfd_link_pic (info)
1581 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1582 return false;
1585 s = bfd_make_section_anyway_with_flags (abfd,
1586 bed->default_use_rela_p
1587 ? ".rela.plt" : ".rel.plt",
1588 flags | SEC_READONLY);
1589 htab->srelplt = s;
1590 if (s == NULL
1591 || !bfd_set_section_alignment (s, ptralign))
1592 return false;
1594 if (htab->sgot == NULL
1595 && !_bfd_elf_create_got_section (abfd, info))
1596 return false;
1598 if (bed->want_dynbss)
1600 /* The .dynbss section is a place to put symbols which are defined
1601 by dynamic objects, are referenced by regular objects, and are
1602 not functions. We must allocate space for them in the process
1603 image and use a R_*_COPY reloc to tell the dynamic linker to
1604 initialize them at run time. The linker script puts the .dynbss
1605 section into the .bss section of the final image. */
1606 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
1607 SEC_ALLOC | SEC_LINKER_CREATED);
1608 htab->sdynbss = s;
1609 if (s == NULL)
1610 return false;
1611 /* The .rel[a].bss section holds copy relocs. This section is not
1612 normally needed. We need to create it here, though, so that the
1613 linker will map it to an output section. We can't just create it
1614 only if we need it, because we will not know whether we need it
1615 until we have seen all the input files, and the first time the
1616 main linker code calls BFD after examining all the input files
1617 (size_dynamic_sections) the input sections have already been
1618 mapped to the output sections. If the section turns out not to
1619 be needed, we can discard it later. We will never need this
1620 section when generating a shared object, since they do not use
1621 copy relocs. */
1622 if (! bfd_link_pic (info))
1624 s = bfd_make_section_anyway_with_flags (abfd,
1625 (bed->default_use_rela_p
1626 ? ".rela.bss" : ".rel.bss"),
1627 flags | SEC_READONLY);
1628 htab->srelbss = s;
1629 if (s == NULL
1630 || !bfd_set_section_alignment (s, ptralign))
1631 return false;
1635 return true;
1639 /* Adjust a symbol defined by a dynamic object and referenced by a
1640 regular object. The current definition is in some section of the
1641 dynamic object, but we're not including those sections. We have to
1642 change the definition to something the rest of the link can
1643 understand. */
1645 static bool
1646 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1647 struct elf_link_hash_entry *h)
1649 struct elf_link_hash_table *htab;
1650 bfd *dynobj;
1651 asection *s;
1653 #ifdef DEBUG_PIC
1654 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1655 #endif
1657 dynobj = elf_hash_table (info)->dynobj;
1659 /* Make sure we know what is going on here. */
1660 BFD_ASSERT (dynobj != NULL
1661 && (h->needs_plt
1662 || h->is_weakalias
1663 || (h->def_dynamic
1664 && h->ref_regular
1665 && !h->def_regular)));
1667 /* If this is a function, put it in the procedure linkage table. We
1668 will fill in the contents of the procedure linkage table later,
1669 when we know the address of the .got section. */
1670 if (h->type == STT_FUNC
1671 || h->needs_plt)
1673 if (! bfd_link_pic (info)
1674 && !h->def_dynamic
1675 && !h->ref_dynamic
1676 && h->root.type != bfd_link_hash_undefweak
1677 && h->root.type != bfd_link_hash_undefined)
1679 /* This case can occur if we saw a PLT reloc in an input
1680 file, but the symbol was never referred to by a dynamic
1681 object. In such a case, we don't actually need to build
1682 a procedure linkage table, and we can just do a PCREL
1683 reloc instead. */
1684 h->plt.offset = (bfd_vma) -1;
1685 h->needs_plt = 0;
1688 return true;
1690 else
1691 h->plt.offset = (bfd_vma) -1;
1693 /* If this is a weak symbol, and there is a real definition, the
1694 processor independent code will have arranged for us to see the
1695 real definition first, and we can just use the same value. */
1696 if (h->is_weakalias)
1698 struct elf_link_hash_entry *def = weakdef (h);
1699 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1700 h->root.u.def.section = def->root.u.def.section;
1701 h->root.u.def.value = def->root.u.def.value;
1702 return true;
1705 /* This is a reference to a symbol defined by a dynamic object which
1706 is not a function. */
1708 /* If we are creating a shared library, we must presume that the
1709 only references to the symbol are via the global offset table.
1710 For such cases we need not do anything here; the relocations will
1711 be handled correctly by relocate_section. */
1712 if (bfd_link_pic (info))
1713 return true;
1715 /* If there are no references to this symbol that do not use the
1716 GOT, we don't need to generate a copy reloc. */
1717 if (!h->non_got_ref)
1718 return true;
1720 /* If -z nocopyreloc was given, we won't generate them either. */
1721 if (0 && info->nocopyreloc)
1723 h->non_got_ref = 0;
1724 return true;
1727 /* If we don't find any dynamic relocs in read-only sections, then
1728 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1729 if (0 && !_bfd_elf_readonly_dynrelocs (h))
1731 h->non_got_ref = 0;
1732 return true;
1735 /* We must allocate the symbol in our .dynbss section, which will
1736 become part of the .bss section of the executable. There will be
1737 an entry for this symbol in the .dynsym section. The dynamic
1738 object will contain position independent code, so all references
1739 from the dynamic object to this symbol will go through the global
1740 offset table. The dynamic linker will use the .dynsym entry to
1741 determine the address it must put in the global offset table, so
1742 both the dynamic object and the regular object will refer to the
1743 same memory location for the variable. */
1745 htab = m32r_elf_hash_table (info);
1746 if (htab == NULL)
1747 return false;
1749 s = htab->sdynbss;
1750 BFD_ASSERT (s != NULL);
1752 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1753 to copy the initial value out of the dynamic object and into the
1754 runtime process image. We need to remember the offset into the
1755 .rela.bss section we are going to use. */
1756 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1758 asection *srel;
1760 srel = htab->srelbss;
1761 BFD_ASSERT (srel != NULL);
1762 srel->size += sizeof (Elf32_External_Rela);
1763 h->needs_copy = 1;
1766 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1769 /* Allocate space in .plt, .got and associated reloc sections for
1770 dynamic relocs. */
1772 static bool
1773 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1775 struct bfd_link_info *info;
1776 struct elf_link_hash_table *htab;
1777 struct elf_dyn_relocs *p;
1779 if (h->root.type == bfd_link_hash_indirect)
1780 return true;
1782 info = (struct bfd_link_info *) inf;
1783 htab = m32r_elf_hash_table (info);
1784 if (htab == NULL)
1785 return false;
1787 if (htab->dynamic_sections_created
1788 && h->plt.refcount > 0)
1790 /* Make sure this symbol is output as a dynamic symbol.
1791 Undefined weak syms won't yet be marked as dynamic. */
1792 if (h->dynindx == -1
1793 && !h->forced_local)
1795 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1796 return false;
1799 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
1801 asection *s = htab->splt;
1803 /* If this is the first .plt entry, make room for the special
1804 first entry. */
1805 if (s->size == 0)
1806 s->size += PLT_ENTRY_SIZE;
1808 h->plt.offset = s->size;
1810 /* If this symbol is not defined in a regular file, and we are
1811 not generating a shared library, then set the symbol to this
1812 location in the .plt. This is required to make function
1813 pointers compare as equal between the normal executable and
1814 the shared library. */
1815 if (! bfd_link_pic (info)
1816 && !h->def_regular)
1818 h->root.u.def.section = s;
1819 h->root.u.def.value = h->plt.offset;
1822 /* Make room for this entry. */
1823 s->size += PLT_ENTRY_SIZE;
1825 /* We also need to make an entry in the .got.plt section, which
1826 will be placed in the .got section by the linker script. */
1827 htab->sgotplt->size += 4;
1829 /* We also need to make an entry in the .rel.plt section. */
1830 htab->srelplt->size += sizeof (Elf32_External_Rela);
1832 else
1834 h->plt.offset = (bfd_vma) -1;
1835 h->needs_plt = 0;
1838 else
1840 h->plt.offset = (bfd_vma) -1;
1841 h->needs_plt = 0;
1844 if (h->got.refcount > 0)
1846 asection *s;
1847 bool dyn;
1849 /* Make sure this symbol is output as a dynamic symbol.
1850 Undefined weak syms won't yet be marked as dynamic. */
1851 if (h->dynindx == -1
1852 && !h->forced_local)
1854 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1855 return false;
1858 s = htab->sgot;
1860 h->got.offset = s->size;
1861 s->size += 4;
1862 dyn = htab->dynamic_sections_created;
1863 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
1864 htab->srelgot->size += sizeof (Elf32_External_Rela);
1866 else
1867 h->got.offset = (bfd_vma) -1;
1869 if (h->dyn_relocs == NULL)
1870 return true;
1872 /* In the shared -Bsymbolic case, discard space allocated for
1873 dynamic pc-relative relocs against symbols which turn out to be
1874 defined in regular objects. For the normal shared case, discard
1875 space for pc-relative relocs that have become local due to symbol
1876 visibility changes. */
1878 if (bfd_link_pic (info))
1880 if (h->def_regular
1881 && (h->forced_local
1882 || info->symbolic))
1884 struct elf_dyn_relocs **pp;
1886 for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
1888 p->count -= p->pc_count;
1889 p->pc_count = 0;
1890 if (p->count == 0)
1891 *pp = p->next;
1892 else
1893 pp = &p->next;
1897 /* Also discard relocs on undefined weak syms with non-default
1898 visibility. */
1899 if (h->dyn_relocs != NULL
1900 && h->root.type == bfd_link_hash_undefweak)
1902 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1903 h->dyn_relocs = NULL;
1905 /* Make sure undefined weak symbols are output as a dynamic
1906 symbol in PIEs. */
1907 else if (h->dynindx == -1
1908 && !h->forced_local)
1910 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1911 return false;
1915 else
1917 /* For the non-shared case, discard space for relocs against
1918 symbols which turn out to need copy relocs or are not
1919 dynamic. */
1921 if (!h->non_got_ref
1922 && ((h->def_dynamic
1923 && !h->def_regular)
1924 || (htab->dynamic_sections_created
1925 && (h->root.type == bfd_link_hash_undefweak
1926 || h->root.type == bfd_link_hash_undefined))))
1928 /* Make sure this symbol is output as a dynamic symbol.
1929 Undefined weak syms won't yet be marked as dynamic. */
1930 if (h->dynindx == -1
1931 && !h->forced_local)
1933 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1934 return false;
1937 /* If that succeeded, we know we'll be keeping all the
1938 relocs. */
1939 if (h->dynindx != -1)
1940 goto keep;
1943 h->dyn_relocs = NULL;
1945 keep: ;
1948 /* Finally, allocate space. */
1949 for (p = h->dyn_relocs; p != NULL; p = p->next)
1951 asection *sreloc = elf_section_data (p->sec)->sreloc;
1952 sreloc->size += p->count * sizeof (Elf32_External_Rela);
1955 return true;
1958 /* Set the sizes of the dynamic sections. */
1960 static bool
1961 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1962 struct bfd_link_info *info)
1964 struct elf_link_hash_table *htab;
1965 bfd *dynobj;
1966 asection *s;
1967 bool relocs;
1968 bfd *ibfd;
1970 #ifdef DEBUG_PIC
1971 printf ("m32r_elf_size_dynamic_sections()\n");
1972 #endif
1974 htab = m32r_elf_hash_table (info);
1975 if (htab == NULL)
1976 return false;
1978 dynobj = htab->dynobj;
1979 BFD_ASSERT (dynobj != NULL);
1981 if (htab->dynamic_sections_created)
1983 /* Set the contents of the .interp section to the interpreter. */
1984 if (bfd_link_executable (info) && !info->nointerp)
1986 s = bfd_get_linker_section (dynobj, ".interp");
1987 BFD_ASSERT (s != NULL);
1988 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1989 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1993 /* Set up .got offsets for local syms, and space for local dynamic
1994 relocs. */
1995 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1997 bfd_signed_vma *local_got;
1998 bfd_signed_vma *end_local_got;
1999 bfd_size_type locsymcount;
2000 Elf_Internal_Shdr *symtab_hdr;
2001 asection *srel;
2003 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2004 continue;
2006 for (s = ibfd->sections; s != NULL; s = s->next)
2008 struct elf_dyn_relocs *p;
2010 for (p = ((struct elf_dyn_relocs *)
2011 elf_section_data (s)->local_dynrel);
2012 p != NULL;
2013 p = p->next)
2015 if (! bfd_is_abs_section (p->sec)
2016 && bfd_is_abs_section (p->sec->output_section))
2018 /* Input section has been discarded, either because
2019 it is a copy of a linkonce section or due to
2020 linker script /DISCARD/, so we'll be discarding
2021 the relocs too. */
2023 else if (p->count != 0)
2025 srel = elf_section_data (p->sec)->sreloc;
2026 srel->size += p->count * sizeof (Elf32_External_Rela);
2027 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2028 info->flags |= DF_TEXTREL;
2033 local_got = elf_local_got_refcounts (ibfd);
2034 if (!local_got)
2035 continue;
2037 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2038 locsymcount = symtab_hdr->sh_info;
2039 end_local_got = local_got + locsymcount;
2040 s = htab->sgot;
2041 srel = htab->srelgot;
2042 for (; local_got < end_local_got; ++local_got)
2044 if (*local_got > 0)
2046 *local_got = s->size;
2047 s->size += 4;
2048 if (bfd_link_pic (info))
2049 srel->size += sizeof (Elf32_External_Rela);
2051 else
2052 *local_got = (bfd_vma) -1;
2056 /* Allocate global sym .plt and .got entries, and space for global
2057 sym dynamic relocs. */
2058 elf_link_hash_traverse (htab, allocate_dynrelocs, info);
2060 /* We now have determined the sizes of the various dynamic sections.
2061 Allocate memory for them. */
2062 relocs = false;
2063 for (s = dynobj->sections; s != NULL; s = s->next)
2065 if ((s->flags & SEC_LINKER_CREATED) == 0)
2066 continue;
2068 if (s == htab->splt
2069 || s == htab->sgot
2070 || s == htab->sgotplt
2071 || s == htab->sdynbss)
2073 /* Strip this section if we don't need it; see the
2074 comment below. */
2076 else if (startswith (bfd_section_name (s), ".rela"))
2078 if (s->size != 0 && s != htab->srelplt)
2079 relocs = true;
2081 /* We use the reloc_count field as a counter if we need
2082 to copy relocs into the output file. */
2083 s->reloc_count = 0;
2085 else
2086 /* It's not one of our sections, so don't allocate space. */
2087 continue;
2089 if (s->size == 0)
2091 /* If we don't need this section, strip it from the
2092 output file. This is mostly to handle .rela.bss and
2093 .rela.plt. We must create both sections in
2094 create_dynamic_sections, because they must be created
2095 before the linker maps input sections to output
2096 sections. The linker does that before
2097 adjust_dynamic_symbol is called, and it is that
2098 function which decides whether anything needs to go
2099 into these sections. */
2100 s->flags |= SEC_EXCLUDE;
2101 continue;
2104 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2105 continue;
2107 /* Allocate memory for the section contents. We use bfd_zalloc
2108 here in case unused entries are not reclaimed before the
2109 section's contents are written out. This should not happen,
2110 but this way if it does, we get a R_M32R_NONE reloc instead
2111 of garbage. */
2112 s->contents = bfd_zalloc (dynobj, s->size);
2113 if (s->contents == NULL)
2114 return false;
2117 return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
2120 /* Relocate an M32R/D ELF section.
2121 There is some attempt to make this function usable for many architectures,
2122 both for RELA and REL type relocs, if only to serve as a learning tool.
2124 The RELOCATE_SECTION function is called by the new ELF backend linker
2125 to handle the relocations for a section.
2127 The relocs are always passed as Rela structures; if the section
2128 actually uses Rel structures, the r_addend field will always be
2129 zero.
2131 This function is responsible for adjust the section contents as
2132 necessary, and (if using Rela relocs and generating a
2133 relocatable output file) adjusting the reloc addend as
2134 necessary.
2136 This function does not have to worry about setting the reloc
2137 address or the reloc symbol index.
2139 LOCAL_SYMS is a pointer to the swapped in local symbols.
2141 LOCAL_SECTIONS is an array giving the section in the input file
2142 corresponding to the st_shndx field of each local symbol.
2144 The global hash table entry for the global symbols can be found
2145 via elf_sym_hashes (input_bfd).
2147 When generating relocatable output, this function must handle
2148 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2149 going to be the section symbol corresponding to the output
2150 section, which means that the addend must be adjusted
2151 accordingly. */
2153 static int
2154 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2155 struct bfd_link_info *info,
2156 bfd *input_bfd,
2157 asection *input_section,
2158 bfd_byte *contents,
2159 Elf_Internal_Rela *relocs,
2160 Elf_Internal_Sym *local_syms,
2161 asection **local_sections)
2163 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2164 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2165 Elf_Internal_Rela *rel, *relend;
2166 /* Assume success. */
2167 bool ret = true;
2168 struct elf_link_hash_table *htab = m32r_elf_hash_table (info);
2169 bfd_vma *local_got_offsets;
2170 asection *sgot, *splt, *sreloc;
2171 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2173 if (htab == NULL)
2174 return false;
2176 local_got_offsets = elf_local_got_offsets (input_bfd);
2178 sgot = htab->sgot;
2179 splt = htab->splt;
2180 sreloc = NULL;
2182 rel = relocs;
2183 relend = relocs + input_section->reloc_count;
2184 for (; rel < relend; rel++)
2186 int r_type;
2187 reloc_howto_type *howto;
2188 unsigned long r_symndx;
2189 struct elf_link_hash_entry *h;
2190 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2191 ensure it's zero (we use REL relocs, not RELA). Therefore this
2192 should be assigning zero to `addend', but for clarity we use
2193 `r_addend'. */
2194 bfd_vma addend = rel->r_addend;
2195 bfd_vma offset = rel->r_offset;
2196 bfd_vma relocation;
2197 Elf_Internal_Sym *sym;
2198 asection *sec;
2199 const char *sym_name;
2200 bfd_reloc_status_type r;
2201 const char *errmsg = NULL;
2202 bool use_rel = false;
2204 h = NULL;
2205 r_type = ELF32_R_TYPE (rel->r_info);
2206 if (r_type < 0 || r_type >= (int) R_M32R_max)
2208 /* xgettext:c-format */
2209 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2210 input_bfd, (int) r_type);
2211 bfd_set_error (bfd_error_bad_value);
2212 ret = false;
2213 continue;
2216 if ( r_type == R_M32R_GNU_VTENTRY
2217 || r_type == R_M32R_GNU_VTINHERIT
2218 || r_type == R_M32R_NONE
2219 || r_type == R_M32R_RELA_GNU_VTENTRY
2220 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2221 continue;
2223 if (r_type <= R_M32R_GNU_VTENTRY)
2224 use_rel = true;
2226 howto = m32r_elf_howto_table + r_type;
2227 r_symndx = ELF32_R_SYM (rel->r_info);
2229 sym = NULL;
2230 sec = NULL;
2231 h = NULL;
2233 if (r_symndx < symtab_hdr->sh_info)
2235 /* Local symbol. */
2236 sym = local_syms + r_symndx;
2237 sec = local_sections[r_symndx];
2238 sym_name = "<local symbol>";
2240 if (!use_rel)
2242 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2243 addend = rel->r_addend;
2245 else
2247 relocation = (sec->output_section->vma
2248 + sec->output_offset
2249 + sym->st_value);
2252 else
2254 /* External symbol. */
2255 relocation = 0;
2257 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2259 if (info->wrap_hash != NULL
2260 && (input_section->flags & SEC_DEBUGGING) != 0)
2261 h = ((struct elf_link_hash_entry *)
2262 unwrap_hash_lookup (info, input_bfd, &h->root));
2264 while (h->root.type == bfd_link_hash_indirect
2265 || h->root.type == bfd_link_hash_warning)
2266 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2267 sym_name = h->root.root.string;
2269 if (h->root.type == bfd_link_hash_defined
2270 || h->root.type == bfd_link_hash_defweak)
2272 bool dyn;
2273 sec = h->root.u.def.section;
2275 dyn = htab->dynamic_sections_created;
2276 sec = h->root.u.def.section;
2277 if (r_type == R_M32R_GOTPC24
2278 || (r_type == R_M32R_GOTPC_HI_ULO
2279 || r_type == R_M32R_GOTPC_HI_SLO
2280 || r_type == R_M32R_GOTPC_LO)
2281 || (r_type == R_M32R_26_PLTREL
2282 && h->plt.offset != (bfd_vma) -1)
2283 || ((r_type == R_M32R_GOT24
2284 || r_type == R_M32R_GOT16_HI_ULO
2285 || r_type == R_M32R_GOT16_HI_SLO
2286 || r_type == R_M32R_GOT16_LO)
2287 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2288 bfd_link_pic (info),
2290 && (! bfd_link_pic (info)
2291 || (! info->symbolic && h->dynindx != -1)
2292 || !h->def_regular))
2293 || (bfd_link_pic (info)
2294 && ((! info->symbolic && h->dynindx != -1)
2295 || !h->def_regular)
2296 && (((r_type == R_M32R_16_RELA
2297 || r_type == R_M32R_32_RELA
2298 || r_type == R_M32R_24_RELA
2299 || r_type == R_M32R_HI16_ULO_RELA
2300 || r_type == R_M32R_HI16_SLO_RELA
2301 || r_type == R_M32R_LO16_RELA)
2302 && !h->forced_local)
2303 || r_type == R_M32R_REL32
2304 || r_type == R_M32R_10_PCREL_RELA
2305 || r_type == R_M32R_18_PCREL_RELA
2306 || r_type == R_M32R_26_PCREL_RELA)
2307 && ((input_section->flags & SEC_ALLOC) != 0
2308 /* DWARF will emit R_M32R_16(24,32) relocations
2309 in its sections against symbols defined
2310 externally in shared libraries. We can't do
2311 anything with them here. */
2312 || ((input_section->flags & SEC_DEBUGGING) != 0
2313 && h->def_dynamic))))
2315 /* In these cases, we don't need the relocation
2316 value. We check specially because in some
2317 obscure cases sec->output_section will be NULL. */
2319 else if (sec->output_section != NULL)
2320 relocation = (h->root.u.def.value
2321 + sec->output_section->vma
2322 + sec->output_offset);
2323 else if (!bfd_link_relocatable (info)
2324 && (_bfd_elf_section_offset (output_bfd, info,
2325 input_section,
2326 rel->r_offset)
2327 != (bfd_vma) -1))
2329 _bfd_error_handler
2330 /* xgettext:c-format */
2331 (_("%pB(%pA+%#" PRIx64 "): unresolvable %s relocation "
2332 "against symbol `%s'"),
2333 input_bfd,
2334 input_section,
2335 (uint64_t) rel->r_offset,
2336 howto->name,
2337 h->root.root.string);
2340 else if (h->root.type == bfd_link_hash_undefweak)
2342 else if (info->unresolved_syms_in_objects == RM_IGNORE
2343 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2345 else if (!bfd_link_relocatable (info))
2346 info->callbacks->undefined_symbol
2347 (info, h->root.root.string, input_bfd, input_section, offset,
2348 (info->unresolved_syms_in_objects == RM_DIAGNOSE
2349 && !info->warn_unresolved_syms)
2350 || ELF_ST_VISIBILITY (h->other));
2353 if (sec != NULL && discarded_section (sec))
2354 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2355 rel, 1, relend, howto, 0, contents);
2357 if (bfd_link_relocatable (info) && !use_rel)
2359 /* This is a relocatable link. We don't have to change
2360 anything, unless the reloc is against a section symbol,
2361 in which case we have to adjust according to where the
2362 section symbol winds up in the output section. */
2363 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2364 rel->r_addend += sec->output_offset;
2365 continue;
2368 if (bfd_link_relocatable (info) && use_rel)
2370 /* This is a relocatable link. We don't have to change
2371 anything, unless the reloc is against a section symbol,
2372 in which case we have to adjust according to where the
2373 section symbol winds up in the output section. */
2374 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2375 continue;
2377 addend += sec->output_offset;
2379 /* If partial_inplace, we need to store any additional addend
2380 back in the section. */
2381 if (! howto->partial_inplace)
2382 continue;
2383 /* ??? Here is a nice place to call a special_function
2384 like handler. */
2385 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2386 r = _bfd_relocate_contents (howto, input_bfd,
2387 addend, contents + offset);
2388 else
2390 Elf_Internal_Rela *lorel;
2392 /* We allow an arbitrary number of HI16 relocs before the
2393 LO16 reloc. This permits gcc to emit the HI and LO relocs
2394 itself. */
2395 for (lorel = rel + 1;
2396 (lorel < relend
2397 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2398 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2399 lorel++)
2400 continue;
2401 if (lorel < relend
2402 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2404 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2405 contents, addend);
2406 r = bfd_reloc_ok;
2408 else
2409 r = _bfd_relocate_contents (howto, input_bfd,
2410 addend, contents + offset);
2413 else
2415 /* Sanity check the address. */
2416 if (offset > high_address)
2418 r = bfd_reloc_outofrange;
2419 goto check_reloc;
2422 switch ((int) r_type)
2424 case R_M32R_GOTOFF:
2425 /* Relocation is relative to the start of the global offset
2426 table (for ld24 rx, #uimm24). eg access at label+addend
2428 ld24 rx. #label@GOTOFF + addend
2429 sub rx, r12. */
2431 BFD_ASSERT (sgot != NULL);
2433 relocation = -(relocation - sgot->output_section->vma);
2434 rel->r_addend = -rel->r_addend;
2435 break;
2437 case R_M32R_GOTOFF_HI_ULO:
2438 case R_M32R_GOTOFF_HI_SLO:
2439 case R_M32R_GOTOFF_LO:
2440 BFD_ASSERT (sgot != NULL);
2442 relocation -= sgot->output_section->vma;
2444 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2445 && ((relocation + rel->r_addend) & 0x8000))
2446 rel->r_addend += 0x10000;
2447 break;
2449 case R_M32R_GOTPC24:
2450 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2451 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2453 relocation = sgot->output_section->vma;
2454 break;
2456 case R_M32R_GOTPC_HI_ULO:
2457 case R_M32R_GOTPC_HI_SLO:
2458 case R_M32R_GOTPC_LO:
2460 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2461 bl .+4
2462 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2463 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2465 bl .+4
2466 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2467 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2469 relocation = sgot->output_section->vma;
2470 relocation -= (input_section->output_section->vma
2471 + input_section->output_offset
2472 + rel->r_offset);
2473 if ((r_type == R_M32R_GOTPC_HI_SLO)
2474 && ((relocation + rel->r_addend) & 0x8000))
2475 rel->r_addend += 0x10000;
2477 break;
2479 case R_M32R_GOT16_HI_ULO:
2480 case R_M32R_GOT16_HI_SLO:
2481 case R_M32R_GOT16_LO:
2482 /* Fall through. */
2483 case R_M32R_GOT24:
2484 /* Relocation is to the entry for this symbol in the global
2485 offset table. */
2486 BFD_ASSERT (sgot != NULL);
2488 if (h != NULL)
2490 bool dyn;
2491 bfd_vma off;
2493 off = h->got.offset;
2494 BFD_ASSERT (off != (bfd_vma) -1);
2496 dyn = htab->dynamic_sections_created;
2497 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2498 bfd_link_pic (info),
2500 || (bfd_link_pic (info)
2501 && (info->symbolic
2502 || h->dynindx == -1
2503 || h->forced_local)
2504 && h->def_regular))
2506 /* This is actually a static link, or it is a
2507 -Bsymbolic link and the symbol is defined
2508 locally, or the symbol was forced to be local
2509 because of a version file. We must initialize
2510 this entry in the global offset table. Since the
2511 offset must always be a multiple of 4, we use the
2512 least significant bit to record whether we have
2513 initialized it already.
2515 When doing a dynamic link, we create a .rela.got
2516 relocation entry to initialize the value. This
2517 is done in the finish_dynamic_symbol routine. */
2518 if ((off & 1) != 0)
2519 off &= ~1;
2520 else
2522 bfd_put_32 (output_bfd, relocation,
2523 sgot->contents + off);
2524 h->got.offset |= 1;
2528 relocation = sgot->output_offset + off;
2530 else
2532 bfd_vma off;
2533 bfd_byte *loc;
2535 BFD_ASSERT (local_got_offsets != NULL
2536 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2538 off = local_got_offsets[r_symndx];
2540 /* The offset must always be a multiple of 4. We use
2541 the least significant bit to record whether we have
2542 already processed this entry. */
2543 if ((off & 1) != 0)
2544 off &= ~1;
2545 else
2547 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2549 if (bfd_link_pic (info))
2551 asection *srelgot;
2552 Elf_Internal_Rela outrel;
2554 /* We need to generate a R_M32R_RELATIVE reloc
2555 for the dynamic linker. */
2556 srelgot = htab->srelgot;
2557 BFD_ASSERT (srelgot != NULL);
2559 outrel.r_offset = (sgot->output_section->vma
2560 + sgot->output_offset
2561 + off);
2562 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2563 outrel.r_addend = relocation;
2564 loc = srelgot->contents;
2565 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2566 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2567 ++srelgot->reloc_count;
2570 local_got_offsets[r_symndx] |= 1;
2573 relocation = sgot->output_offset + off;
2575 if ((r_type == R_M32R_GOT16_HI_SLO)
2576 && ((relocation + rel->r_addend) & 0x8000))
2577 rel->r_addend += 0x10000;
2579 break;
2581 case R_M32R_26_PLTREL:
2582 /* Relocation is to the entry for this symbol in the
2583 procedure linkage table. */
2585 /* The native assembler will generate a 26_PLTREL reloc
2586 for a local symbol if you assemble a call from one
2587 section to another when using -K pic. */
2588 if (h == NULL)
2589 break;
2591 if (h->forced_local)
2592 break;
2594 if (h->plt.offset == (bfd_vma) -1)
2595 /* We didn't make a PLT entry for this symbol. This
2596 happens when statically linking PIC code, or when
2597 using -Bsymbolic. */
2598 break;
2600 relocation = (splt->output_section->vma
2601 + splt->output_offset
2602 + h->plt.offset);
2603 break;
2605 case R_M32R_HI16_SLO_RELA:
2606 if ((relocation + rel->r_addend) & 0x8000)
2607 rel->r_addend += 0x10000;
2608 /* Fall through. */
2610 case R_M32R_16_RELA:
2611 case R_M32R_24_RELA:
2612 case R_M32R_32_RELA:
2613 case R_M32R_REL32:
2614 case R_M32R_10_PCREL_RELA:
2615 case R_M32R_18_PCREL_RELA:
2616 case R_M32R_26_PCREL_RELA:
2617 case R_M32R_HI16_ULO_RELA:
2618 case R_M32R_LO16_RELA:
2619 if (bfd_link_pic (info)
2620 && r_symndx != STN_UNDEF
2621 && (input_section->flags & SEC_ALLOC) != 0
2622 && (( r_type != R_M32R_10_PCREL_RELA
2623 && r_type != R_M32R_18_PCREL_RELA
2624 && r_type != R_M32R_26_PCREL_RELA
2625 && r_type != R_M32R_REL32)
2626 || (h != NULL
2627 && h->dynindx != -1
2628 && (! info->symbolic
2629 || !h->def_regular))))
2631 Elf_Internal_Rela outrel;
2632 bool skip, relocate;
2633 bfd_byte *loc;
2635 /* When generating a shared object, these relocations
2636 are copied into the output file to be resolved at run
2637 time. */
2638 if (sreloc == NULL)
2640 sreloc = _bfd_elf_get_dynamic_reloc_section
2641 (input_bfd, input_section, /*rela?*/ true);
2642 if (sreloc == NULL)
2643 return false;
2646 skip = false;
2647 relocate = false;
2649 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2650 info,
2651 input_section,
2652 rel->r_offset);
2653 if (outrel.r_offset == (bfd_vma) -1)
2654 skip = true;
2655 else if (outrel.r_offset == (bfd_vma) -2)
2656 skip = relocate = true;
2657 outrel.r_offset += (input_section->output_section->vma
2658 + input_section->output_offset);
2660 if (skip)
2661 memset (&outrel, 0, sizeof outrel);
2662 else if ( r_type == R_M32R_10_PCREL_RELA
2663 || r_type == R_M32R_18_PCREL_RELA
2664 || r_type == R_M32R_26_PCREL_RELA
2665 || r_type == R_M32R_REL32)
2667 BFD_ASSERT (h != NULL && h->dynindx != -1);
2668 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2669 outrel.r_addend = rel->r_addend;
2671 else
2673 /* h->dynindx may be -1 if this symbol was marked to
2674 become local. */
2675 if (h == NULL
2676 || ((info->symbolic || h->dynindx == -1)
2677 && h->def_regular))
2679 relocate = true;
2680 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2681 outrel.r_addend = relocation + rel->r_addend;
2683 else
2685 BFD_ASSERT (h->dynindx != -1);
2686 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2687 outrel.r_addend = relocation + rel->r_addend;
2691 loc = sreloc->contents;
2692 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2693 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2694 ++sreloc->reloc_count;
2696 /* If this reloc is against an external symbol, we do
2697 not want to fiddle with the addend. Otherwise, we
2698 need to include the symbol value so that it becomes
2699 an addend for the dynamic reloc. */
2700 if (! relocate)
2701 continue;
2702 break;
2704 else if (r_type != R_M32R_10_PCREL_RELA)
2705 break;
2706 /* Fall through. */
2708 case (int) R_M32R_10_PCREL :
2709 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2710 contents, offset,
2711 sec, relocation, addend);
2712 goto check_reloc;
2714 case (int) R_M32R_HI16_SLO :
2715 case (int) R_M32R_HI16_ULO :
2717 Elf_Internal_Rela *lorel;
2719 /* We allow an arbitrary number of HI16 relocs before the
2720 LO16 reloc. This permits gcc to emit the HI and LO relocs
2721 itself. */
2722 for (lorel = rel + 1;
2723 (lorel < relend
2724 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2725 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2726 lorel++)
2727 continue;
2728 if (lorel < relend
2729 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2731 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2732 contents, relocation + addend);
2733 r = bfd_reloc_ok;
2735 else
2736 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2737 contents, offset,
2738 relocation, addend);
2741 goto check_reloc;
2743 case (int) R_M32R_SDA16_RELA:
2744 case (int) R_M32R_SDA16 :
2746 const char *name;
2748 BFD_ASSERT (sec != NULL);
2749 name = bfd_section_name (sec);
2751 if ( strcmp (name, ".sdata") == 0
2752 || strcmp (name, ".sbss") == 0
2753 || strcmp (name, ".scommon") == 0)
2755 bfd_vma sda_base;
2756 bfd *out_bfd = sec->output_section->owner;
2758 r = m32r_elf_final_sda_base (out_bfd, info,
2759 &errmsg,
2760 &sda_base);
2761 if (r != bfd_reloc_ok)
2763 ret = false;
2764 goto check_reloc;
2767 /* At this point `relocation' contains the object's
2768 address. */
2769 relocation -= sda_base;
2770 /* Now it contains the offset from _SDA_BASE_. */
2772 else
2774 _bfd_error_handler
2775 /* xgettext:c-format */
2776 (_("%pB: the target (%s) of an %s relocation"
2777 " is in the wrong section (%pA)"),
2778 input_bfd,
2779 sym_name,
2780 m32r_elf_howto_table[(int) r_type].name,
2781 sec);
2782 /*bfd_set_error (bfd_error_bad_value); ??? why? */
2783 ret = false;
2784 continue;
2787 /* Fall through. */
2789 default : /* OLD_M32R_RELOC */
2791 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2792 contents, offset,
2793 relocation, addend);
2794 goto check_reloc;
2797 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2798 contents, rel->r_offset,
2799 relocation, rel->r_addend);
2803 check_reloc:
2805 if (r != bfd_reloc_ok)
2807 /* FIXME: This should be generic enough to go in a utility. */
2808 const char *name;
2810 if (h != NULL)
2811 name = h->root.root.string;
2812 else
2814 name = (bfd_elf_string_from_elf_section
2815 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2816 if (name == NULL || *name == '\0')
2817 name = bfd_section_name (sec);
2820 if (errmsg != NULL)
2821 goto common_error;
2823 switch (r)
2825 case bfd_reloc_overflow:
2826 (*info->callbacks->reloc_overflow)
2827 (info, (h ? &h->root : NULL), name, howto->name,
2828 (bfd_vma) 0, input_bfd, input_section, offset);
2829 break;
2831 case bfd_reloc_undefined:
2832 (*info->callbacks->undefined_symbol)
2833 (info, name, input_bfd, input_section, offset, true);
2834 break;
2836 case bfd_reloc_outofrange:
2837 errmsg = _("internal error: out of range error");
2838 goto common_error;
2840 case bfd_reloc_notsupported:
2841 errmsg = _("internal error: unsupported relocation error");
2842 goto common_error;
2844 case bfd_reloc_dangerous:
2845 errmsg = _("internal error: dangerous error");
2846 goto common_error;
2848 default:
2849 errmsg = _("internal error: unknown error");
2850 /* fall through */
2852 common_error:
2853 (*info->callbacks->warning) (info, errmsg, name, input_bfd,
2854 input_section, offset);
2855 break;
2860 return ret;
2863 /* Finish up dynamic symbol handling. We set the contents of various
2864 dynamic sections here. */
2866 static bool
2867 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
2868 struct bfd_link_info *info,
2869 struct elf_link_hash_entry *h,
2870 Elf_Internal_Sym *sym)
2872 struct elf_link_hash_table *htab;
2873 bfd_byte *loc;
2875 #ifdef DEBUG_PIC
2876 printf ("m32r_elf_finish_dynamic_symbol()\n");
2877 #endif
2879 htab = m32r_elf_hash_table (info);
2880 if (htab == NULL)
2881 return false;
2883 if (h->plt.offset != (bfd_vma) -1)
2885 asection *splt;
2886 asection *sgot;
2887 asection *srela;
2889 bfd_vma plt_index;
2890 bfd_vma got_offset;
2891 Elf_Internal_Rela rela;
2893 /* This symbol has an entry in the procedure linkage table. Set
2894 it up. */
2896 BFD_ASSERT (h->dynindx != -1);
2898 splt = htab->splt;
2899 sgot = htab->sgotplt;
2900 srela = htab->srelplt;
2901 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
2903 /* Get the index in the procedure linkage table which
2904 corresponds to this symbol. This is the index of this symbol
2905 in all the symbols for which we are making plt entries. The
2906 first entry in the procedure linkage table is reserved. */
2907 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
2909 /* Get the offset into the .got table of the entry that
2910 corresponds to this function. Each .got entry is 4 bytes.
2911 The first three are reserved. */
2912 got_offset = (plt_index + 3) * 4;
2914 /* Fill in the entry in the procedure linkage table. */
2915 if (! bfd_link_pic (info))
2917 bfd_put_32 (output_bfd,
2918 (PLT_ENTRY_WORD0b
2919 + (((sgot->output_section->vma
2920 + sgot->output_offset
2921 + got_offset) >> 16) & 0xffff)),
2922 splt->contents + h->plt.offset);
2923 bfd_put_32 (output_bfd,
2924 (PLT_ENTRY_WORD1b
2925 + ((sgot->output_section->vma
2926 + sgot->output_offset
2927 + got_offset) & 0xffff)),
2928 splt->contents + h->plt.offset + 4);
2929 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
2930 splt->contents + h->plt.offset + 8);
2931 bfd_put_32 (output_bfd,
2932 (PLT_ENTRY_WORD3
2933 + plt_index * sizeof (Elf32_External_Rela)),
2934 splt->contents + h->plt.offset + 12);
2935 bfd_put_32 (output_bfd,
2936 (PLT_ENTRY_WORD4
2937 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
2938 splt->contents + h->plt.offset + 16);
2940 else
2942 bfd_put_32 (output_bfd,
2943 PLT_ENTRY_WORD0 + got_offset,
2944 splt->contents + h->plt.offset);
2945 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
2946 splt->contents + h->plt.offset + 4);
2947 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
2948 splt->contents + h->plt.offset + 8);
2949 bfd_put_32 (output_bfd,
2950 (PLT_ENTRY_WORD3
2951 + plt_index * sizeof (Elf32_External_Rela)),
2952 splt->contents + h->plt.offset + 12);
2953 bfd_put_32 (output_bfd,
2954 (PLT_ENTRY_WORD4
2955 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
2956 splt->contents + h->plt.offset + 16);
2959 /* Fill in the entry in the global offset table. */
2960 bfd_put_32 (output_bfd,
2961 (splt->output_section->vma
2962 + splt->output_offset
2963 + h->plt.offset
2964 + 12), /* same offset */
2965 sgot->contents + got_offset);
2967 /* Fill in the entry in the .rela.plt section. */
2968 rela.r_offset = (sgot->output_section->vma
2969 + sgot->output_offset
2970 + got_offset);
2971 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
2972 rela.r_addend = 0;
2973 loc = srela->contents;
2974 loc += plt_index * sizeof (Elf32_External_Rela);
2975 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2977 if (!h->def_regular)
2979 /* Mark the symbol as undefined, rather than as defined in
2980 the .plt section. Leave the value alone. */
2981 sym->st_shndx = SHN_UNDEF;
2985 if (h->got.offset != (bfd_vma) -1)
2987 asection *sgot;
2988 asection *srela;
2989 Elf_Internal_Rela rela;
2991 /* This symbol has an entry in the global offset table. Set it
2992 up. */
2994 sgot = htab->sgot;
2995 srela = htab->srelgot;
2996 BFD_ASSERT (sgot != NULL && srela != NULL);
2998 rela.r_offset = (sgot->output_section->vma
2999 + sgot->output_offset
3000 + (h->got.offset &~ 1));
3002 /* If this is a -Bsymbolic link, and the symbol is defined
3003 locally, we just want to emit a RELATIVE reloc. Likewise if
3004 the symbol was forced to be local because of a version file.
3005 The entry in the global offset table will already have been
3006 initialized in the relocate_section function. */
3007 if (bfd_link_pic (info)
3008 && (info->symbolic
3009 || h->dynindx == -1
3010 || h->forced_local)
3011 && h->def_regular)
3013 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3014 rela.r_addend = (h->root.u.def.value
3015 + h->root.u.def.section->output_section->vma
3016 + h->root.u.def.section->output_offset);
3018 else
3020 BFD_ASSERT ((h->got.offset & 1) == 0);
3021 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3022 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3023 rela.r_addend = 0;
3026 loc = srela->contents;
3027 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3028 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3029 ++srela->reloc_count;
3032 if (h->needs_copy)
3034 asection *s;
3035 Elf_Internal_Rela rela;
3037 /* This symbols needs a copy reloc. Set it up. */
3039 BFD_ASSERT (h->dynindx != -1
3040 && (h->root.type == bfd_link_hash_defined
3041 || h->root.type == bfd_link_hash_defweak));
3043 s = bfd_get_linker_section (htab->dynobj, ".rela.bss");
3044 BFD_ASSERT (s != NULL);
3046 rela.r_offset = (h->root.u.def.value
3047 + h->root.u.def.section->output_section->vma
3048 + h->root.u.def.section->output_offset);
3049 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3050 rela.r_addend = 0;
3051 loc = s->contents;
3052 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3053 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3054 ++s->reloc_count;
3057 /* Mark some specially defined symbols as absolute. */
3058 if (h == htab->hdynamic || h == htab->hgot)
3059 sym->st_shndx = SHN_ABS;
3061 return true;
3065 /* Finish up the dynamic sections. */
3067 static bool
3068 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3069 struct bfd_link_info *info)
3071 struct elf_link_hash_table *htab;
3072 bfd *dynobj;
3073 asection *sdyn;
3074 asection *sgot;
3076 #ifdef DEBUG_PIC
3077 printf ("m32r_elf_finish_dynamic_sections()\n");
3078 #endif
3080 htab = m32r_elf_hash_table (info);
3081 if (htab == NULL)
3082 return false;
3084 dynobj = htab->dynobj;
3086 sgot = htab->sgotplt;
3087 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3089 if (htab->dynamic_sections_created)
3091 asection *splt;
3092 Elf32_External_Dyn *dyncon, *dynconend;
3094 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3096 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3097 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3099 for (; dyncon < dynconend; dyncon++)
3101 Elf_Internal_Dyn dyn;
3102 asection *s;
3104 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3106 switch (dyn.d_tag)
3108 default:
3109 break;
3111 case DT_PLTGOT:
3112 s = htab->sgotplt;
3113 goto get_vma;
3114 case DT_JMPREL:
3115 s = htab->srelplt;
3116 get_vma:
3117 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3118 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3119 break;
3121 case DT_PLTRELSZ:
3122 s = htab->srelplt;
3123 dyn.d_un.d_val = s->size;
3124 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3125 break;
3129 /* Fill in the first entry in the procedure linkage table. */
3130 splt = htab->splt;
3131 if (splt && splt->size > 0)
3133 if (bfd_link_pic (info))
3135 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3136 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3137 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3138 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3139 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3141 else
3143 unsigned long addr;
3144 /* addr = .got + 4 */
3145 addr = sgot->output_section->vma + sgot->output_offset + 4;
3146 bfd_put_32 (output_bfd,
3147 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3148 splt->contents);
3149 bfd_put_32 (output_bfd,
3150 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3151 splt->contents + 4);
3152 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3153 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3154 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3157 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3158 PLT_ENTRY_SIZE;
3162 /* Fill in the first three entries in the global offset table. */
3163 if (sgot && sgot->size > 0)
3165 if (sdyn == NULL)
3166 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3167 else
3168 bfd_put_32 (output_bfd,
3169 sdyn->output_section->vma + sdyn->output_offset,
3170 sgot->contents);
3171 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3172 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3174 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3177 return true;
3181 /* Set the right machine number. */
3183 static bool
3184 m32r_elf_object_p (bfd *abfd)
3186 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3188 default:
3189 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3190 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3191 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3193 return true;
3196 /* Store the machine number in the flags field. */
3198 static bool
3199 m32r_elf_final_write_processing (bfd *abfd)
3201 unsigned long val;
3203 switch (bfd_get_mach (abfd))
3205 default:
3206 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3207 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3208 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3211 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3212 elf_elfheader (abfd)->e_flags |= val;
3213 return _bfd_elf_final_write_processing (abfd);
3216 /* Function to keep M32R specific file flags. */
3218 static bool
3219 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3221 BFD_ASSERT (!elf_flags_init (abfd)
3222 || elf_elfheader (abfd)->e_flags == flags);
3224 elf_elfheader (abfd)->e_flags = flags;
3225 elf_flags_init (abfd) = true;
3226 return true;
3229 /* Merge backend specific data from an object file to the output
3230 object file when linking. */
3232 static bool
3233 m32r_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
3235 bfd *obfd = info->output_bfd;
3236 flagword out_flags;
3237 flagword in_flags;
3239 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3240 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3241 return true;
3243 in_flags = elf_elfheader (ibfd)->e_flags;
3244 out_flags = elf_elfheader (obfd)->e_flags;
3246 if (! elf_flags_init (obfd))
3248 /* If the input is the default architecture then do not
3249 bother setting the flags for the output architecture,
3250 instead allow future merges to do this. If no future
3251 merges ever set these flags then they will retain their
3252 unitialised values, which surprise surprise, correspond
3253 to the default values. */
3254 if (bfd_get_arch_info (ibfd)->the_default)
3255 return true;
3257 elf_flags_init (obfd) = true;
3258 elf_elfheader (obfd)->e_flags = in_flags;
3260 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3261 && bfd_get_arch_info (obfd)->the_default)
3262 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3263 bfd_get_mach (ibfd));
3265 return true;
3268 /* Check flag compatibility. */
3269 if (in_flags == out_flags)
3270 return true;
3272 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3274 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3275 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3276 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3278 _bfd_error_handler
3279 (_("%pB: instruction set mismatch with previous modules"), ibfd);
3281 bfd_set_error (bfd_error_bad_value);
3282 return false;
3286 return true;
3289 /* Display the flags field. */
3291 static bool
3292 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3294 FILE * file = (FILE *) ptr;
3296 BFD_ASSERT (abfd != NULL && ptr != NULL);
3298 _bfd_elf_print_private_bfd_data (abfd, ptr);
3300 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3302 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3304 default:
3305 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3306 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3307 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3310 fputc ('\n', file);
3312 return true;
3315 static asection *
3316 m32r_elf_gc_mark_hook (asection *sec,
3317 struct bfd_link_info *info,
3318 Elf_Internal_Rela *rel,
3319 struct elf_link_hash_entry *h,
3320 Elf_Internal_Sym *sym)
3322 if (h != NULL)
3323 switch (ELF32_R_TYPE (rel->r_info))
3325 case R_M32R_GNU_VTINHERIT:
3326 case R_M32R_GNU_VTENTRY:
3327 case R_M32R_RELA_GNU_VTINHERIT:
3328 case R_M32R_RELA_GNU_VTENTRY:
3329 return NULL;
3332 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3335 /* Look through the relocs for a section during the first phase.
3336 Since we don't do .gots or .plts, we just need to consider the
3337 virtual table relocs for gc. */
3339 static bool
3340 m32r_elf_check_relocs (bfd *abfd,
3341 struct bfd_link_info *info,
3342 asection *sec,
3343 const Elf_Internal_Rela *relocs)
3345 Elf_Internal_Shdr *symtab_hdr;
3346 struct elf_link_hash_entry **sym_hashes;
3347 const Elf_Internal_Rela *rel;
3348 const Elf_Internal_Rela *rel_end;
3349 struct elf_link_hash_table *htab;
3350 bfd *dynobj;
3351 asection *sreloc;
3353 if (bfd_link_relocatable (info))
3354 return true;
3356 sreloc = NULL;
3357 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3358 sym_hashes = elf_sym_hashes (abfd);
3360 htab = m32r_elf_hash_table (info);
3361 if (htab == NULL)
3362 return false;
3364 dynobj = htab->dynobj;
3366 rel_end = relocs + sec->reloc_count;
3367 for (rel = relocs; rel < rel_end; rel++)
3369 int r_type;
3370 struct elf_link_hash_entry *h;
3371 unsigned long r_symndx;
3373 r_symndx = ELF32_R_SYM (rel->r_info);
3374 r_type = ELF32_R_TYPE (rel->r_info);
3375 if (r_symndx < symtab_hdr->sh_info)
3376 h = NULL;
3377 else
3379 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3380 while (h->root.type == bfd_link_hash_indirect
3381 || h->root.type == bfd_link_hash_warning)
3382 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3385 /* Some relocs require a global offset table. */
3386 if (htab->sgot == NULL)
3388 switch (r_type)
3390 case R_M32R_GOT16_HI_ULO:
3391 case R_M32R_GOT16_HI_SLO:
3392 case R_M32R_GOTOFF:
3393 case R_M32R_GOTOFF_HI_ULO:
3394 case R_M32R_GOTOFF_HI_SLO:
3395 case R_M32R_GOTOFF_LO:
3396 case R_M32R_GOT16_LO:
3397 case R_M32R_GOTPC24:
3398 case R_M32R_GOTPC_HI_ULO:
3399 case R_M32R_GOTPC_HI_SLO:
3400 case R_M32R_GOTPC_LO:
3401 case R_M32R_GOT24:
3402 if (dynobj == NULL)
3403 htab->dynobj = dynobj = abfd;
3404 if (!_bfd_elf_create_got_section (dynobj, info))
3405 return false;
3406 break;
3408 default:
3409 break;
3413 switch (r_type)
3415 case R_M32R_GOT16_HI_ULO:
3416 case R_M32R_GOT16_HI_SLO:
3417 case R_M32R_GOT16_LO:
3418 case R_M32R_GOT24:
3420 if (h != NULL)
3421 h->got.refcount += 1;
3422 else
3424 bfd_signed_vma *local_got_refcounts;
3426 /* This is a global offset table entry for a local
3427 symbol. */
3428 local_got_refcounts = elf_local_got_refcounts (abfd);
3429 if (local_got_refcounts == NULL)
3431 bfd_size_type size;
3433 size = symtab_hdr->sh_info;
3434 size *= sizeof (bfd_signed_vma);
3435 local_got_refcounts = bfd_zalloc (abfd, size);
3436 if (local_got_refcounts == NULL)
3437 return false;
3438 elf_local_got_refcounts (abfd) = local_got_refcounts;
3440 local_got_refcounts[r_symndx] += 1;
3442 break;
3444 case R_M32R_26_PLTREL:
3445 /* This symbol requires a procedure linkage table entry. We
3446 actually build the entry in adjust_dynamic_symbol,
3447 because this might be a case of linking PIC code without
3448 linking in any dynamic objects, in which case we don't
3449 need to generate a procedure linkage table after all. */
3451 /* If this is a local symbol, we resolve it directly without
3452 creating a procedure linkage table entry. */
3453 if (h == NULL)
3454 continue;
3456 if (h->forced_local)
3457 break;
3459 h->needs_plt = 1;
3460 h->plt.refcount += 1;
3461 break;
3463 case R_M32R_16_RELA:
3464 case R_M32R_24_RELA:
3465 case R_M32R_32_RELA:
3466 case R_M32R_REL32:
3467 case R_M32R_HI16_ULO_RELA:
3468 case R_M32R_HI16_SLO_RELA:
3469 case R_M32R_LO16_RELA:
3470 case R_M32R_SDA16_RELA:
3471 case R_M32R_10_PCREL_RELA:
3472 case R_M32R_18_PCREL_RELA:
3473 case R_M32R_26_PCREL_RELA:
3475 if (h != NULL && !bfd_link_pic (info))
3477 h->non_got_ref = 1;
3478 h->plt.refcount += 1;
3481 /* If we are creating a shared library, and this is a reloc
3482 against a global symbol, or a non PC relative reloc
3483 against a local symbol, then we need to copy the reloc
3484 into the shared library. However, if we are linking with
3485 -Bsymbolic, we do not need to copy a reloc against a
3486 global symbol which is defined in an object we are
3487 including in the link (i.e., DEF_REGULAR is set). At
3488 this point we have not seen all the input files, so it is
3489 possible that DEF_REGULAR is not set now but will be set
3490 later (it is never cleared). We account for that
3491 possibility below by storing information in the
3492 dyn_relocs field of the hash table entry. A similar
3493 situation occurs when creating shared libraries and symbol
3494 visibility changes render the symbol local.
3496 If on the other hand, we are creating an executable, we
3497 may need to keep relocations for symbols satisfied by a
3498 dynamic library if we manage to avoid copy relocs for the
3499 symbol. */
3500 if ((bfd_link_pic (info)
3501 && (sec->flags & SEC_ALLOC) != 0
3502 && (( r_type != R_M32R_26_PCREL_RELA
3503 && r_type != R_M32R_18_PCREL_RELA
3504 && r_type != R_M32R_10_PCREL_RELA
3505 && r_type != R_M32R_REL32)
3506 || (h != NULL
3507 && (! info->symbolic
3508 || h->root.type == bfd_link_hash_defweak
3509 || !h->def_regular))))
3510 || (!bfd_link_pic (info)
3511 && (sec->flags & SEC_ALLOC) != 0
3512 && h != NULL
3513 && (h->root.type == bfd_link_hash_defweak
3514 || !h->def_regular)))
3516 struct elf_dyn_relocs *p;
3517 struct elf_dyn_relocs **head;
3519 if (dynobj == NULL)
3520 htab->dynobj = dynobj = abfd;
3522 /* When creating a shared object, we must copy these
3523 relocs into the output file. We create a reloc
3524 section in dynobj and make room for the reloc. */
3525 if (sreloc == NULL)
3527 sreloc = _bfd_elf_make_dynamic_reloc_section
3528 (sec, dynobj, 2, abfd, /*rela?*/ true);
3530 if (sreloc == NULL)
3531 return false;
3534 /* If this is a global symbol, we count the number of
3535 relocations we need for this symbol. */
3536 if (h != NULL)
3537 head = &h->dyn_relocs;
3538 else
3540 /* Track dynamic relocs needed for local syms too. */
3541 asection *s;
3542 void *vpp;
3543 Elf_Internal_Sym *isym;
3545 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3546 abfd, r_symndx);
3547 if (isym == NULL)
3548 return false;
3550 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3551 if (s == NULL)
3552 s = sec;
3554 vpp = &elf_section_data (s)->local_dynrel;
3555 head = (struct elf_dyn_relocs **) vpp;
3558 p = *head;
3559 if (p == NULL || p->sec != sec)
3561 size_t amt = sizeof (*p);
3563 p = bfd_alloc (dynobj, amt);
3564 if (p == NULL)
3565 return false;
3566 p->next = *head;
3567 *head = p;
3568 p->sec = sec;
3569 p->count = 0;
3570 p->pc_count = 0;
3573 p->count += 1;
3574 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3575 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3576 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3577 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3578 p->pc_count += 1;
3580 break;
3582 /* This relocation describes the C++ object vtable hierarchy.
3583 Reconstruct it for later use during GC. */
3584 case R_M32R_RELA_GNU_VTINHERIT:
3585 case R_M32R_GNU_VTINHERIT:
3586 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3587 return false;
3588 break;
3590 /* This relocation describes which C++ vtable entries are actually
3591 used. Record for later use during GC. */
3592 case R_M32R_GNU_VTENTRY:
3593 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
3594 return false;
3595 break;
3596 case R_M32R_RELA_GNU_VTENTRY:
3597 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3598 return false;
3599 break;
3603 return true;
3606 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
3608 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3609 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3610 { NULL, 0, 0, 0, 0 }
3613 static bool
3614 m32r_elf_section_flags (const Elf_Internal_Shdr *hdr)
3616 const char *name = hdr->bfd_section->name;
3618 if (startswith (name, ".sbss")
3619 || startswith (name, ".sdata"))
3620 hdr->bfd_section->flags |= SEC_SMALL_DATA;
3622 return true;
3625 static enum elf_reloc_type_class
3626 m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3627 const asection *rel_sec ATTRIBUTE_UNUSED,
3628 const Elf_Internal_Rela *rela)
3630 switch ((int) ELF32_R_TYPE (rela->r_info))
3632 case R_M32R_RELATIVE: return reloc_class_relative;
3633 case R_M32R_JMP_SLOT: return reloc_class_plt;
3634 case R_M32R_COPY: return reloc_class_copy;
3635 default: return reloc_class_normal;
3639 #define ELF_ARCH bfd_arch_m32r
3640 #define ELF_TARGET_ID M32R_ELF_DATA
3641 #define ELF_MACHINE_CODE EM_M32R
3642 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
3643 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
3645 #define TARGET_BIG_SYM m32r_elf32_vec
3646 #define TARGET_BIG_NAME "elf32-m32r"
3647 #define TARGET_LITTLE_SYM m32r_elf32_le_vec
3648 #define TARGET_LITTLE_NAME "elf32-m32rle"
3650 #define elf_info_to_howto m32r_info_to_howto
3651 #define elf_info_to_howto_rel m32r_info_to_howto_rel
3652 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
3653 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
3654 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
3655 #define elf_backend_relocate_section m32r_elf_relocate_section
3656 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
3657 #define elf_backend_check_relocs m32r_elf_check_relocs
3659 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
3660 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
3661 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
3662 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
3663 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
3664 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
3665 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
3666 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
3668 #define elf_backend_can_gc_sections 1
3669 /*#if !USE_REL
3670 #define elf_backend_rela_normal 1
3671 #endif*/
3672 #define elf_backend_can_refcount 1
3673 #define elf_backend_want_got_plt 1
3674 #define elf_backend_plt_readonly 1
3675 #define elf_backend_want_plt_sym 0
3676 #define elf_backend_got_header_size 12
3677 #define elf_backend_dtrel_excludes_plt 1
3679 #define elf_backend_may_use_rel_p 1
3680 #ifdef USE_M32R_OLD_RELOC
3681 #define elf_backend_default_use_rela_p 0
3682 #define elf_backend_may_use_rela_p 0
3683 #else
3684 #define elf_backend_default_use_rela_p 1
3685 #define elf_backend_may_use_rela_p 1
3686 #endif
3688 #define elf_backend_object_p m32r_elf_object_p
3689 #define elf_backend_final_write_processing m32r_elf_final_write_processing
3690 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
3691 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
3692 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
3693 #define elf_backend_special_sections m32r_elf_special_sections
3694 #define elf_backend_section_flags m32r_elf_section_flags
3696 #define elf_backend_linux_prpsinfo32_ugid16 true
3698 #include "elf32-target.h"
3700 #undef ELF_MAXPAGESIZE
3701 #define ELF_MAXPAGESIZE 0x1000
3703 #undef TARGET_BIG_SYM
3704 #define TARGET_BIG_SYM m32r_elf32_linux_vec
3705 #undef TARGET_BIG_NAME
3706 #define TARGET_BIG_NAME "elf32-m32r-linux"
3707 #undef TARGET_LITTLE_SYM
3708 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
3709 #undef TARGET_LITTLE_NAME
3710 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
3711 #undef elf32_bed
3712 #define elf32_bed elf32_m32r_lin_bed
3714 #include "elf32-target.h"