merge from gcc
[binutils.git] / bfd / elf32-m32r.c
blob23075d6167f88951f3eb2e1d7d86461b317a5522
1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
21 #include "bfd.h"
22 #include "sysdep.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 (reloc_entry->howto->size)
226 case 1:
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 2:
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 2, /* size (0 = byte, 1 = short, 2 = long) */
478 32, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_bitfield, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE, /* partial_inplace */
485 0, /* src_mask */
486 0, /* dst_mask */
487 FALSE), /* pcrel_offset */
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
491 0, /* rightshift */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 24, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
537 slot for pc. */
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
541 again. */
542 HOWTO (R_M32R_10_PCREL, /* type */
543 2, /* rightshift */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
545 10, /* bitsize */
546 TRUE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_signed, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE, /* partial_inplace */
552 0xff, /* src_mask */
553 0xff, /* dst_mask */
554 TRUE), /* pcrel_offset */
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 TRUE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
575 again. */
576 HOWTO (R_M32R_26_PCREL, /* type */
577 2, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 26, /* bitsize */
580 TRUE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_dont, /* complain_on_overflow */
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
607 16, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 0, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 0, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0, /* dst_mask */
678 FALSE), /* pcrel_offset */
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 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 32, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 24, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 10, /* bitsize */
750 TRUE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE, /* partial_inplace */
756 0xff, /* src_mask */
757 0xff, /* dst_mask */
758 TRUE), /* pcrel_offset */
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 TRUE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 26, /* bitsize */
780 TRUE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
792 16, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
854 0, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0, /* dst_mask */
863 FALSE), /* pcrel_offset */
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 0, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0, /* dst_mask */
878 FALSE), /* pcrel_offset */
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
884 32, /* bitsize */
885 TRUE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_bitfield, /* complain_on_overflow */
888 bfd_elf_generic_reloc,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE), /* pcrel_offset */
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 2, /* size (0 = byte, 1 = short, 2 = long) */
903 24, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_unsigned, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL, /* type */
917 2, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 24, /* bitsize */
920 TRUE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_signed, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE), /* pcrel_offset */
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_bitfield, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* Like R_M32R_24, but used when setting global offset table
950 entries. */
951 HOWTO (R_M32R_GLOB_DAT, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_bitfield, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 32, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
982 addend. */
983 HOWTO (R_M32R_RELATIVE, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 32, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 24, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_bitfield, /* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1012 table register. */
1013 HOWTO (R_M32R_GOTPC24, /* type */
1014 0, /* rightshift */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 24, /* bitsize */
1017 TRUE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_unsigned, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE), /* pcrel_offset */
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028 the symbol. */
1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044 the symbol. */
1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1060 the symbol. */
1061 HOWTO (R_M32R_GOT16_LO, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 0, /* bitpos */
1067 complain_overflow_dont, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077 the symbol. */
1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 bfd_elf_generic_reloc, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE), /* pcrel_offset */
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094 the symbol. */
1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE), /* pcrel_offset */
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1111 the symbol. */
1112 HOWTO (R_M32R_GOTPC_LO, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE), /* pcrel_offset */
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 bfd_elf_generic_reloc, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
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 /* Set the howto pointer for an M32R ELF reloc. */
1259 static void
1260 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1261 arelent *cache_ptr,
1262 Elf_Internal_Rela *dst)
1264 unsigned int r_type;
1266 r_type = ELF32_R_TYPE (dst->r_info);
1267 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1268 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1271 static void
1272 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1273 arelent *cache_ptr,
1274 Elf_Internal_Rela *dst)
1276 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1277 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1278 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1279 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1283 /* Given a BFD section, try to locate the corresponding ELF section
1284 index. */
1286 static bfd_boolean
1287 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1288 asection *sec,
1289 int *retval)
1291 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1293 *retval = SHN_M32R_SCOMMON;
1294 return TRUE;
1296 return FALSE;
1299 /* M32R ELF uses two common sections. One is the usual one, and the other
1300 is for small objects. All the small objects are kept together, and then
1301 referenced via one register, which yields faster assembler code. It is
1302 up to the compiler to emit an instruction to load the register with
1303 _SDA_BASE. This is what we use for the small common section. This
1304 approach is copied from elf32-mips.c. */
1305 static asection m32r_elf_scom_section;
1306 static asymbol m32r_elf_scom_symbol;
1307 static asymbol *m32r_elf_scom_symbol_ptr;
1309 /* Handle the special M32R section numbers that a symbol may use. */
1311 static void
1312 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1314 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1316 switch (elfsym->internal_elf_sym.st_shndx)
1318 case SHN_M32R_SCOMMON:
1319 if (m32r_elf_scom_section.name == NULL)
1321 /* Initialize the small common section. */
1322 m32r_elf_scom_section.name = ".scommon";
1323 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1324 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1325 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1326 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1327 m32r_elf_scom_symbol.name = ".scommon";
1328 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1329 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1330 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1332 asym->section = &m32r_elf_scom_section;
1333 asym->value = elfsym->internal_elf_sym.st_size;
1334 break;
1338 /* Hook called by the linker routine which adds symbols from an object
1339 file. We must handle the special M32R section numbers here.
1340 We also keep watching for whether we need to create the sdata special
1341 linker sections. */
1343 static bfd_boolean
1344 m32r_elf_add_symbol_hook (bfd *abfd,
1345 struct bfd_link_info *info,
1346 Elf_Internal_Sym *sym,
1347 const char **namep,
1348 flagword *flagsp ATTRIBUTE_UNUSED,
1349 asection **secp,
1350 bfd_vma *valp)
1352 if (! info->relocatable
1353 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1354 && strcmp (*namep, "_SDA_BASE_") == 0
1355 && is_elf_hash_table (info->hash))
1357 /* This is simpler than using _bfd_elf_create_linker_section
1358 (our needs are simpler than ppc's needs). Also
1359 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1360 section already exists a new one is created that follows it which
1361 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1362 struct elf_link_hash_entry *h;
1363 struct bfd_link_hash_entry *bh;
1364 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1366 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1367 if (s == NULL)
1369 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1370 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1372 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1373 flags);
1374 if (s == NULL)
1375 return FALSE;
1376 bfd_set_section_alignment (abfd, s, 2);
1379 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1380 FALSE, FALSE, FALSE);
1382 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1383 && !(_bfd_generic_link_add_one_symbol (info,
1384 abfd,
1385 "_SDA_BASE_",
1386 BSF_GLOBAL,
1388 (bfd_vma) 32768,
1389 NULL,
1390 FALSE,
1391 get_elf_backend_data (abfd)->collect,
1392 &bh)))
1393 return FALSE;
1394 h = (struct elf_link_hash_entry *) bh;
1395 h->type = STT_OBJECT;
1398 switch (sym->st_shndx)
1400 case SHN_M32R_SCOMMON:
1401 *secp = bfd_make_section_old_way (abfd, ".scommon");
1402 (*secp)->flags |= SEC_IS_COMMON;
1403 *valp = sym->st_size;
1404 break;
1407 return TRUE;
1410 /* We have to figure out the SDA_BASE value, so that we can adjust the
1411 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1412 BFD. If we can't find it, we're stuck. We cache it in the ELF
1413 target data. We don't need to adjust the symbol value for an
1414 external symbol if we are producing relocatable output. */
1416 static bfd_reloc_status_type
1417 m32r_elf_final_sda_base (bfd *output_bfd,
1418 struct bfd_link_info *info,
1419 const char **error_message,
1420 bfd_vma *psb)
1422 if (elf_gp (output_bfd) == 0)
1424 struct bfd_link_hash_entry *h;
1426 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1427 if (h != NULL && h->type == bfd_link_hash_defined)
1428 elf_gp (output_bfd) = (h->u.def.value
1429 + h->u.def.section->output_section->vma
1430 + h->u.def.section->output_offset);
1431 else
1433 /* Only get the error once. */
1434 *psb = elf_gp (output_bfd) = 4;
1435 *error_message =
1436 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1437 return bfd_reloc_dangerous;
1440 *psb = elf_gp (output_bfd);
1441 return bfd_reloc_ok;
1444 /* Return size of a PLT entry. */
1445 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1447 /* The m32r linker needs to keep track of the number of relocs that it
1448 decides to copy in check_relocs for each symbol. This is so that
1449 it can discard PC relative relocs if it doesn't need them when
1450 linking with -Bsymbolic. We store the information in a field
1451 extending the regular ELF linker hash table. */
1453 /* This structure keeps track of the number of PC relative relocs we
1454 have copied for a given symbol. */
1456 struct elf_m32r_pcrel_relocs_copied
1458 /* Next section. */
1459 struct elf_m32r_pcrel_relocs_copied *next;
1460 /* A section in dynobj. */
1461 asection *section;
1462 /* Number of relocs copied in this section. */
1463 bfd_size_type count;
1466 /* The sh linker needs to keep track of the number of relocs that it
1467 decides to copy as dynamic relocs in check_relocs for each symbol.
1468 This is so that it can later discard them if they are found to be
1469 unnecessary. We store the information in a field extending the
1470 regular ELF linker hash table. */
1472 struct elf_m32r_dyn_relocs
1474 struct elf_m32r_dyn_relocs *next;
1476 /* The input section of the reloc. */
1477 asection *sec;
1479 /* Total number of relocs copied for the input section. */
1480 bfd_size_type count;
1482 /* Number of pc-relative relocs copied for the input section. */
1483 bfd_size_type pc_count;
1487 /* m32r ELF linker hash entry. */
1489 struct elf_m32r_link_hash_entry
1491 struct elf_link_hash_entry root;
1493 /* Track dynamic relocs copied for this symbol. */
1494 struct elf_m32r_dyn_relocs *dyn_relocs;
1497 /* m32r ELF linker hash table. */
1499 struct elf_m32r_link_hash_table
1501 struct elf_link_hash_table root;
1503 /* Short-cuts to get to dynamic linker sections. */
1504 asection *sgot;
1505 asection *sgotplt;
1506 asection *srelgot;
1507 asection *splt;
1508 asection *srelplt;
1509 asection *sdynbss;
1510 asection *srelbss;
1512 /* Small local sym to section mapping cache. */
1513 struct sym_sec_cache sym_sec;
1516 /* Traverse an m32r ELF linker hash table. */
1518 #define m32r_elf_link_hash_traverse(table, func, info) \
1519 (elf_link_hash_traverse \
1520 (&(table)->root, \
1521 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1522 (info)))
1524 /* Get the m32r ELF linker hash table from a link_info structure. */
1527 #define m32r_elf_hash_table(p) \
1528 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1530 /* Create an entry in an m32r ELF linker hash table. */
1532 static struct bfd_hash_entry *
1533 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1534 struct bfd_hash_table *table,
1535 const char *string)
1537 struct elf_m32r_link_hash_entry *ret =
1538 (struct elf_m32r_link_hash_entry *) entry;
1540 /* Allocate the structure if it has not already been allocated by a
1541 subclass. */
1542 if (ret == NULL)
1543 ret = bfd_hash_allocate (table,
1544 sizeof (struct elf_m32r_link_hash_entry));
1545 if (ret == NULL)
1546 return NULL;
1548 /* Call the allocation method of the superclass. */
1549 ret = ((struct elf_m32r_link_hash_entry *)
1550 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1551 table, string));
1552 if (ret != NULL)
1554 struct elf_m32r_link_hash_entry *eh;
1556 eh = (struct elf_m32r_link_hash_entry *) ret;
1557 eh->dyn_relocs = NULL;
1560 return (struct bfd_hash_entry *) ret;
1563 /* Create an m32r ELF linker hash table. */
1565 static struct bfd_link_hash_table *
1566 m32r_elf_link_hash_table_create (bfd *abfd)
1568 struct elf_m32r_link_hash_table *ret;
1569 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1571 ret = bfd_malloc (amt);
1572 if (ret == NULL)
1573 return NULL;
1575 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
1576 m32r_elf_link_hash_newfunc))
1578 free (ret);
1579 return NULL;
1582 ret->sgot = NULL;
1583 ret->sgotplt = NULL;
1584 ret->srelgot = NULL;
1585 ret->splt = NULL;
1586 ret->srelplt = NULL;
1587 ret->sdynbss = NULL;
1588 ret->srelbss = NULL;
1589 ret->sym_sec.abfd = NULL;
1591 return &ret->root.root;
1594 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1595 shortcuts to them in our hash table. */
1597 static bfd_boolean
1598 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1600 struct elf_m32r_link_hash_table *htab;
1602 if (! _bfd_elf_create_got_section (dynobj, info))
1603 return FALSE;
1605 htab = m32r_elf_hash_table (info);
1606 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1607 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1608 if (! htab->sgot || ! htab->sgotplt)
1609 abort ();
1611 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1612 (SEC_ALLOC
1613 | SEC_LOAD
1614 | SEC_HAS_CONTENTS
1615 | SEC_IN_MEMORY
1616 | SEC_LINKER_CREATED
1617 | SEC_READONLY));
1618 if (htab->srelgot == NULL
1619 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1620 return FALSE;
1622 return TRUE;
1625 /* Create dynamic sections when linking against a dynamic object. */
1627 static bfd_boolean
1628 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1630 struct elf_m32r_link_hash_table *htab;
1631 flagword flags, pltflags;
1632 asection *s;
1633 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1634 int ptralign = 2; /* 32bit */
1636 htab = m32r_elf_hash_table (info);
1638 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1639 .rel[a].bss sections. */
1640 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1641 | SEC_LINKER_CREATED);
1643 pltflags = flags;
1644 pltflags |= SEC_CODE;
1645 if (bed->plt_not_loaded)
1646 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1647 if (bed->plt_readonly)
1648 pltflags |= SEC_READONLY;
1650 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1651 htab->splt = s;
1652 if (s == NULL
1653 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1654 return FALSE;
1656 if (bed->want_plt_sym)
1658 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1659 .plt section. */
1660 struct bfd_link_hash_entry *bh = NULL;
1661 struct elf_link_hash_entry *h;
1663 if (! (_bfd_generic_link_add_one_symbol
1664 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1665 (bfd_vma) 0, NULL, FALSE,
1666 get_elf_backend_data (abfd)->collect, &bh)))
1667 return FALSE;
1668 h = (struct elf_link_hash_entry *) bh;
1669 h->def_regular = 1;
1670 h->type = STT_OBJECT;
1672 if (info->shared
1673 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1674 return FALSE;
1677 s = bfd_make_section_with_flags (abfd,
1678 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1679 flags | SEC_READONLY);
1680 htab->srelplt = s;
1681 if (s == NULL
1682 || ! bfd_set_section_alignment (abfd, s, ptralign))
1683 return FALSE;
1685 if (htab->sgot == NULL
1686 && ! create_got_section (abfd, info))
1687 return FALSE;
1690 const char *secname;
1691 char *relname;
1692 flagword secflags;
1693 asection *sec;
1695 for (sec = abfd->sections; sec; sec = sec->next)
1697 secflags = bfd_get_section_flags (abfd, sec);
1698 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1699 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1700 continue;
1701 secname = bfd_get_section_name (abfd, sec);
1702 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1703 strcpy (relname, ".rela");
1704 strcat (relname, secname);
1705 if (bfd_get_section_by_name (abfd, secname))
1706 continue;
1707 s = bfd_make_section_with_flags (abfd, relname,
1708 flags | SEC_READONLY);
1709 if (s == NULL
1710 || ! bfd_set_section_alignment (abfd, s, ptralign))
1711 return FALSE;
1715 if (bed->want_dynbss)
1717 /* The .dynbss section is a place to put symbols which are defined
1718 by dynamic objects, are referenced by regular objects, and are
1719 not functions. We must allocate space for them in the process
1720 image and use a R_*_COPY reloc to tell the dynamic linker to
1721 initialize them at run time. The linker script puts the .dynbss
1722 section into the .bss section of the final image. */
1723 s = bfd_make_section_with_flags (abfd, ".dynbss",
1724 SEC_ALLOC | SEC_LINKER_CREATED);
1725 htab->sdynbss = s;
1726 if (s == NULL)
1727 return FALSE;
1728 /* The .rel[a].bss section holds copy relocs. This section is not
1729 normally needed. We need to create it here, though, so that the
1730 linker will map it to an output section. We can't just create it
1731 only if we need it, because we will not know whether we need it
1732 until we have seen all the input files, and the first time the
1733 main linker code calls BFD after examining all the input files
1734 (size_dynamic_sections) the input sections have already been
1735 mapped to the output sections. If the section turns out not to
1736 be needed, we can discard it later. We will never need this
1737 section when generating a shared object, since they do not use
1738 copy relocs. */
1739 if (! info->shared)
1741 s = bfd_make_section_with_flags (abfd,
1742 (bed->default_use_rela_p
1743 ? ".rela.bss" : ".rel.bss"),
1744 flags | SEC_READONLY);
1745 htab->srelbss = s;
1746 if (s == NULL
1747 || ! bfd_set_section_alignment (abfd, s, ptralign))
1748 return FALSE;
1752 return TRUE;
1755 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1757 static void
1758 m32r_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
1759 struct elf_link_hash_entry *dir,
1760 struct elf_link_hash_entry *ind)
1762 struct elf_m32r_link_hash_entry * edir;
1763 struct elf_m32r_link_hash_entry * eind;
1765 edir = (struct elf_m32r_link_hash_entry *) dir;
1766 eind = (struct elf_m32r_link_hash_entry *) ind;
1768 if (eind->dyn_relocs != NULL)
1770 if (edir->dyn_relocs != NULL)
1772 struct elf_m32r_dyn_relocs **pp;
1773 struct elf_m32r_dyn_relocs *p;
1775 if (ind->root.type == bfd_link_hash_indirect)
1776 abort ();
1778 /* Add reloc counts against the weak sym to the strong sym
1779 list. Merge any entries against the same section. */
1780 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1782 struct elf_m32r_dyn_relocs *q;
1784 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1785 if (q->sec == p->sec)
1787 q->pc_count += p->pc_count;
1788 q->count += p->count;
1789 *pp = p->next;
1790 break;
1792 if (q == NULL)
1793 pp = &p->next;
1795 *pp = edir->dyn_relocs;
1798 edir->dyn_relocs = eind->dyn_relocs;
1799 eind->dyn_relocs = NULL;
1802 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
1806 /* Adjust a symbol defined by a dynamic object and referenced by a
1807 regular object. The current definition is in some section of the
1808 dynamic object, but we're not including those sections. We have to
1809 change the definition to something the rest of the link can
1810 understand. */
1812 static bfd_boolean
1813 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1814 struct elf_link_hash_entry *h)
1816 struct elf_m32r_link_hash_table *htab;
1817 struct elf_m32r_link_hash_entry *eh;
1818 struct elf_m32r_dyn_relocs *p;
1819 bfd *dynobj;
1820 asection *s;
1821 unsigned int power_of_two;
1823 #ifdef DEBUG_PIC
1824 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1825 #endif
1827 dynobj = elf_hash_table (info)->dynobj;
1829 /* Make sure we know what is going on here. */
1830 BFD_ASSERT (dynobj != NULL
1831 && (h->needs_plt
1832 || h->u.weakdef != NULL
1833 || (h->def_dynamic
1834 && h->ref_regular
1835 && !h->def_regular)));
1837 /* If this is a function, put it in the procedure linkage table. We
1838 will fill in the contents of the procedure linkage table later,
1839 when we know the address of the .got section. */
1840 if (h->type == STT_FUNC
1841 || h->needs_plt)
1843 if (! info->shared
1844 && !h->def_dynamic
1845 && !h->ref_dynamic
1846 && h->root.type != bfd_link_hash_undefweak
1847 && h->root.type != bfd_link_hash_undefined)
1849 /* This case can occur if we saw a PLT reloc in an input
1850 file, but the symbol was never referred to by a dynamic
1851 object. In such a case, we don't actually need to build
1852 a procedure linkage table, and we can just do a PCREL
1853 reloc instead. */
1854 h->plt.offset = (bfd_vma) -1;
1855 h->needs_plt = 0;
1858 return TRUE;
1860 else
1861 h->plt.offset = (bfd_vma) -1;
1863 /* If this is a weak symbol, and there is a real definition, the
1864 processor independent code will have arranged for us to see the
1865 real definition first, and we can just use the same value. */
1866 if (h->u.weakdef != NULL)
1868 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1869 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1870 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1871 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1872 return TRUE;
1875 /* This is a reference to a symbol defined by a dynamic object which
1876 is not a function. */
1878 /* If we are creating a shared library, we must presume that the
1879 only references to the symbol are via the global offset table.
1880 For such cases we need not do anything here; the relocations will
1881 be handled correctly by relocate_section. */
1882 if (info->shared)
1883 return TRUE;
1885 /* If there are no references to this symbol that do not use the
1886 GOT, we don't need to generate a copy reloc. */
1887 if (!h->non_got_ref)
1888 return TRUE;
1890 /* If -z nocopyreloc was given, we won't generate them either. */
1891 if (info->nocopyreloc)
1893 h->non_got_ref = 0;
1894 return TRUE;
1897 eh = (struct elf_m32r_link_hash_entry *) h;
1898 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1900 s = p->sec->output_section;
1901 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1902 break;
1905 /* If we didn't find any dynamic relocs in sections which needs the
1906 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1907 the copy reloc. */
1908 if (p == NULL)
1910 h->non_got_ref = 0;
1911 return TRUE;
1914 /* We must allocate the symbol in our .dynbss section, which will
1915 become part of the .bss section of the executable. There will be
1916 an entry for this symbol in the .dynsym section. The dynamic
1917 object will contain position independent code, so all references
1918 from the dynamic object to this symbol will go through the global
1919 offset table. The dynamic linker will use the .dynsym entry to
1920 determine the address it must put in the global offset table, so
1921 both the dynamic object and the regular object will refer to the
1922 same memory location for the variable. */
1924 htab = m32r_elf_hash_table (info);
1925 s = htab->sdynbss;
1926 BFD_ASSERT (s != NULL);
1928 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1929 to copy the initial value out of the dynamic object and into the
1930 runtime process image. We need to remember the offset into the
1931 .rela.bss section we are going to use. */
1932 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1934 asection *srel;
1936 srel = htab->srelbss;
1937 BFD_ASSERT (srel != NULL);
1938 srel->size += sizeof (Elf32_External_Rela);
1939 h->needs_copy = 1;
1942 /* We need to figure out the alignment required for this symbol. I
1943 have no idea how ELF linkers handle this. */
1944 power_of_two = bfd_log2 (h->size);
1945 if (power_of_two > 3)
1946 power_of_two = 3;
1948 /* Apply the required alignment. */
1949 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1950 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1952 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1953 return FALSE;
1956 /* Define the symbol as being at this point in the section. */
1957 h->root.u.def.section = s;
1958 h->root.u.def.value = s->size;
1960 /* Increment the section size to make room for the symbol. */
1961 s->size += h->size;
1963 return TRUE;
1966 /* Allocate space in .plt, .got and associated reloc sections for
1967 dynamic relocs. */
1969 static bfd_boolean
1970 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1972 struct bfd_link_info *info;
1973 struct elf_m32r_link_hash_table *htab;
1974 struct elf_m32r_link_hash_entry *eh;
1975 struct elf_m32r_dyn_relocs *p;
1977 if (h->root.type == bfd_link_hash_indirect)
1978 return TRUE;
1980 if (h->root.type == bfd_link_hash_warning)
1981 /* When warning symbols are created, they **replace** the "real"
1982 entry in the hash table, thus we never get to see the real
1983 symbol in a hash traversal. So look at it now. */
1984 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1986 info = (struct bfd_link_info *) inf;
1987 htab = m32r_elf_hash_table (info);
1989 eh = (struct elf_m32r_link_hash_entry *) h;
1991 if (htab->root.dynamic_sections_created
1992 && h->plt.refcount > 0)
1994 /* Make sure this symbol is output as a dynamic symbol.
1995 Undefined weak syms won't yet be marked as dynamic. */
1996 if (h->dynindx == -1
1997 && !h->forced_local)
1999 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2000 return FALSE;
2003 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2005 asection *s = htab->splt;
2007 /* If this is the first .plt entry, make room for the special
2008 first entry. */
2009 if (s->size == 0)
2010 s->size += PLT_ENTRY_SIZE;
2012 h->plt.offset = s->size;
2014 /* If this symbol is not defined in a regular file, and we are
2015 not generating a shared library, then set the symbol to this
2016 location in the .plt. This is required to make function
2017 pointers compare as equal between the normal executable and
2018 the shared library. */
2019 if (! info->shared
2020 && !h->def_regular)
2022 h->root.u.def.section = s;
2023 h->root.u.def.value = h->plt.offset;
2026 /* Make room for this entry. */
2027 s->size += PLT_ENTRY_SIZE;
2029 /* We also need to make an entry in the .got.plt section, which
2030 will be placed in the .got section by the linker script. */
2031 htab->sgotplt->size += 4;
2033 /* We also need to make an entry in the .rel.plt section. */
2034 htab->srelplt->size += sizeof (Elf32_External_Rela);
2036 else
2038 h->plt.offset = (bfd_vma) -1;
2039 h->needs_plt = 0;
2042 else
2044 h->plt.offset = (bfd_vma) -1;
2045 h->needs_plt = 0;
2048 if (h->got.refcount > 0)
2050 asection *s;
2051 bfd_boolean dyn;
2053 /* Make sure this symbol is output as a dynamic symbol.
2054 Undefined weak syms won't yet be marked as dynamic. */
2055 if (h->dynindx == -1
2056 && !h->forced_local)
2058 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2059 return FALSE;
2062 s = htab->sgot;
2064 h->got.offset = s->size;
2065 s->size += 4;
2066 dyn = htab->root.dynamic_sections_created;
2067 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2068 htab->srelgot->size += sizeof (Elf32_External_Rela);
2070 else
2071 h->got.offset = (bfd_vma) -1;
2073 if (eh->dyn_relocs == NULL)
2074 return TRUE;
2076 /* In the shared -Bsymbolic case, discard space allocated for
2077 dynamic pc-relative relocs against symbols which turn out to be
2078 defined in regular objects. For the normal shared case, discard
2079 space for pc-relative relocs that have become local due to symbol
2080 visibility changes. */
2082 if (info->shared)
2084 if (h->def_regular
2085 && (h->forced_local
2086 || info->symbolic))
2088 struct elf_m32r_dyn_relocs **pp;
2090 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2092 p->count -= p->pc_count;
2093 p->pc_count = 0;
2094 if (p->count == 0)
2095 *pp = p->next;
2096 else
2097 pp = &p->next;
2101 else
2103 /* For the non-shared case, discard space for relocs against
2104 symbols which turn out to need copy relocs or are not
2105 dynamic. */
2107 if (!h->non_got_ref
2108 && ((h->def_dynamic
2109 && !h->def_regular)
2110 || (htab->root.dynamic_sections_created
2111 && (h->root.type == bfd_link_hash_undefweak
2112 || h->root.type == bfd_link_hash_undefined))))
2114 /* Make sure this symbol is output as a dynamic symbol.
2115 Undefined weak syms won't yet be marked as dynamic. */
2116 if (h->dynindx == -1
2117 && !h->forced_local)
2119 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2120 return FALSE;
2123 /* If that succeeded, we know we'll be keeping all the
2124 relocs. */
2125 if (h->dynindx != -1)
2126 goto keep;
2129 eh->dyn_relocs = NULL;
2131 keep: ;
2134 /* Finally, allocate space. */
2135 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2137 asection *sreloc = elf_section_data (p->sec)->sreloc;
2138 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2141 return TRUE;
2144 /* Find any dynamic relocs that apply to read-only sections. */
2146 static bfd_boolean
2147 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2149 struct elf_m32r_link_hash_entry *eh;
2150 struct elf_m32r_dyn_relocs *p;
2152 if (h->root.type == bfd_link_hash_warning)
2153 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2155 eh = (struct elf_m32r_link_hash_entry *) h;
2156 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2158 asection *s = p->sec->output_section;
2160 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2162 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2164 info->flags |= DF_TEXTREL;
2166 /* Not an error, just cut short the traversal. */
2167 return FALSE;
2170 return TRUE;
2173 /* Set the sizes of the dynamic sections. */
2175 static bfd_boolean
2176 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2177 struct bfd_link_info *info)
2179 struct elf_m32r_link_hash_table *htab;
2180 bfd *dynobj;
2181 asection *s;
2182 bfd_boolean relocs;
2183 bfd *ibfd;
2185 #ifdef DEBUG_PIC
2186 printf ("m32r_elf_size_dynamic_sections()\n");
2187 #endif
2189 htab = m32r_elf_hash_table (info);
2190 dynobj = htab->root.dynobj;
2191 BFD_ASSERT (dynobj != NULL);
2193 if (htab->root.dynamic_sections_created)
2195 /* Set the contents of the .interp section to the interpreter. */
2196 if (info->executable)
2198 s = bfd_get_section_by_name (dynobj, ".interp");
2199 BFD_ASSERT (s != NULL);
2200 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2201 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2205 /* Set up .got offsets for local syms, and space for local dynamic
2206 relocs. */
2207 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2209 bfd_signed_vma *local_got;
2210 bfd_signed_vma *end_local_got;
2211 bfd_size_type locsymcount;
2212 Elf_Internal_Shdr *symtab_hdr;
2213 asection *srel;
2215 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2216 continue;
2218 for (s = ibfd->sections; s != NULL; s = s->next)
2220 struct elf_m32r_dyn_relocs *p;
2222 for (p = ((struct elf_m32r_dyn_relocs *)
2223 elf_section_data (s)->local_dynrel);
2224 p != NULL;
2225 p = p->next)
2227 if (! bfd_is_abs_section (p->sec)
2228 && bfd_is_abs_section (p->sec->output_section))
2230 /* Input section has been discarded, either because
2231 it is a copy of a linkonce section or due to
2232 linker script /DISCARD/, so we'll be discarding
2233 the relocs too. */
2235 else if (p->count != 0)
2237 srel = elf_section_data (p->sec)->sreloc;
2238 srel->size += p->count * sizeof (Elf32_External_Rela);
2239 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2240 info->flags |= DF_TEXTREL;
2245 local_got = elf_local_got_refcounts (ibfd);
2246 if (!local_got)
2247 continue;
2249 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2250 locsymcount = symtab_hdr->sh_info;
2251 end_local_got = local_got + locsymcount;
2252 s = htab->sgot;
2253 srel = htab->srelgot;
2254 for (; local_got < end_local_got; ++local_got)
2256 if (*local_got > 0)
2258 *local_got = s->size;
2259 s->size += 4;
2260 if (info->shared)
2261 srel->size += sizeof (Elf32_External_Rela);
2263 else
2264 *local_got = (bfd_vma) -1;
2268 /* Allocate global sym .plt and .got entries, and space for global
2269 sym dynamic relocs. */
2270 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2272 /* We now have determined the sizes of the various dynamic sections.
2273 Allocate memory for them. */
2274 relocs = FALSE;
2275 for (s = dynobj->sections; s != NULL; s = s->next)
2277 if ((s->flags & SEC_LINKER_CREATED) == 0)
2278 continue;
2280 if (s == htab->splt
2281 || s == htab->sgot
2282 || s == htab->sgotplt
2283 || s == htab->sdynbss)
2285 /* Strip this section if we don't need it; see the
2286 comment below. */
2288 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2290 if (s->size != 0 && s != htab->srelplt)
2291 relocs = TRUE;
2293 /* We use the reloc_count field as a counter if we need
2294 to copy relocs into the output file. */
2295 s->reloc_count = 0;
2297 else
2298 /* It's not one of our sections, so don't allocate space. */
2299 continue;
2301 if (s->size == 0)
2303 /* If we don't need this section, strip it from the
2304 output file. This is mostly to handle .rela.bss and
2305 .rela.plt. We must create both sections in
2306 create_dynamic_sections, because they must be created
2307 before the linker maps input sections to output
2308 sections. The linker does that before
2309 adjust_dynamic_symbol is called, and it is that
2310 function which decides whether anything needs to go
2311 into these sections. */
2312 s->flags |= SEC_EXCLUDE;
2313 continue;
2316 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2317 continue;
2319 /* Allocate memory for the section contents. We use bfd_zalloc
2320 here in case unused entries are not reclaimed before the
2321 section's contents are written out. This should not happen,
2322 but this way if it does, we get a R_M32R_NONE reloc instead
2323 of garbage. */
2324 s->contents = bfd_zalloc (dynobj, s->size);
2325 if (s->contents == NULL)
2326 return FALSE;
2329 if (htab->root.dynamic_sections_created)
2331 /* Add some entries to the .dynamic section. We fill in the
2332 values later, in m32r_elf_finish_dynamic_sections, but we
2333 must add the entries now so that we get the correct size for
2334 the .dynamic section. The DT_DEBUG entry is filled in by the
2335 dynamic linker and used by the debugger. */
2336 #define add_dynamic_entry(TAG, VAL) \
2337 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2339 if (info->executable)
2341 if (! add_dynamic_entry (DT_DEBUG, 0))
2342 return FALSE;
2345 if (htab->splt->size != 0)
2347 if (! add_dynamic_entry (DT_PLTGOT, 0)
2348 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2349 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2350 || ! add_dynamic_entry (DT_JMPREL, 0))
2351 return FALSE;
2354 if (relocs)
2356 if (! add_dynamic_entry (DT_RELA, 0)
2357 || ! add_dynamic_entry (DT_RELASZ, 0)
2358 || ! add_dynamic_entry (DT_RELAENT,
2359 sizeof (Elf32_External_Rela)))
2360 return FALSE;
2362 /* If any dynamic relocs apply to a read-only section,
2363 then we need a DT_TEXTREL entry. */
2364 if ((info->flags & DF_TEXTREL) == 0)
2365 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2366 info);
2368 if ((info->flags & DF_TEXTREL) != 0)
2370 if (! add_dynamic_entry (DT_TEXTREL, 0))
2371 return FALSE;
2375 #undef add_dynamic_entry
2377 return TRUE;
2380 /* Relocate an M32R/D ELF section.
2381 There is some attempt to make this function usable for many architectures,
2382 both for RELA and REL type relocs, if only to serve as a learning tool.
2384 The RELOCATE_SECTION function is called by the new ELF backend linker
2385 to handle the relocations for a section.
2387 The relocs are always passed as Rela structures; if the section
2388 actually uses Rel structures, the r_addend field will always be
2389 zero.
2391 This function is responsible for adjust the section contents as
2392 necessary, and (if using Rela relocs and generating a
2393 relocatable output file) adjusting the reloc addend as
2394 necessary.
2396 This function does not have to worry about setting the reloc
2397 address or the reloc symbol index.
2399 LOCAL_SYMS is a pointer to the swapped in local symbols.
2401 LOCAL_SECTIONS is an array giving the section in the input file
2402 corresponding to the st_shndx field of each local symbol.
2404 The global hash table entry for the global symbols can be found
2405 via elf_sym_hashes (input_bfd).
2407 When generating relocatable output, this function must handle
2408 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2409 going to be the section symbol corresponding to the output
2410 section, which means that the addend must be adjusted
2411 accordingly. */
2413 static bfd_boolean
2414 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2415 struct bfd_link_info *info,
2416 bfd *input_bfd,
2417 asection *input_section,
2418 bfd_byte *contents,
2419 Elf_Internal_Rela *relocs,
2420 Elf_Internal_Sym *local_syms,
2421 asection **local_sections)
2423 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2424 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2425 Elf_Internal_Rela *rel, *relend;
2426 /* Assume success. */
2427 bfd_boolean ret = TRUE;
2429 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2430 bfd *dynobj;
2431 bfd_vma *local_got_offsets;
2432 asection *sgot, *splt, *sreloc;
2433 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2435 dynobj = htab->root.dynobj;
2436 local_got_offsets = elf_local_got_offsets (input_bfd);
2438 sgot = htab->sgot;
2439 splt = htab->splt;
2440 sreloc = NULL;
2442 rel = relocs;
2443 relend = relocs + input_section->reloc_count;
2444 for (; rel < relend; rel++)
2446 int r_type;
2447 reloc_howto_type *howto;
2448 unsigned long r_symndx;
2449 struct elf_link_hash_entry *h;
2450 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2451 ensure it's zero (we use REL relocs, not RELA). Therefore this
2452 should be assigning zero to `addend', but for clarity we use
2453 `r_addend'. */
2454 bfd_vma addend = rel->r_addend;
2455 bfd_vma offset = rel->r_offset;
2456 Elf_Internal_Sym *sym;
2457 asection *sec;
2458 const char *sym_name;
2459 bfd_reloc_status_type r;
2460 const char *errmsg = NULL;
2461 bfd_boolean use_rel = FALSE;
2463 h = NULL;
2464 r_type = ELF32_R_TYPE (rel->r_info);
2465 if (r_type < 0 || r_type >= (int) R_M32R_max)
2467 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2468 input_bfd,
2469 (int) r_type);
2470 bfd_set_error (bfd_error_bad_value);
2471 ret = FALSE;
2472 continue;
2475 if ( r_type == R_M32R_GNU_VTENTRY
2476 || r_type == R_M32R_GNU_VTINHERIT
2477 || r_type == R_M32R_NONE
2478 || r_type == R_M32R_RELA_GNU_VTENTRY
2479 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2480 continue;
2482 if (r_type <= R_M32R_GNU_VTENTRY)
2483 use_rel = TRUE;
2485 howto = m32r_elf_howto_table + r_type;
2486 r_symndx = ELF32_R_SYM (rel->r_info);
2488 if (info->relocatable && use_rel)
2490 /* This is a relocatable link. We don't have to change
2491 anything, unless the reloc is against a section symbol,
2492 in which case we have to adjust according to where the
2493 section symbol winds up in the output section. */
2494 sec = NULL;
2495 if (r_symndx >= symtab_hdr->sh_info)
2496 /* External symbol. */
2497 continue;
2499 /* Local symbol. */
2500 sym = local_syms + r_symndx;
2501 sym_name = "<local symbol>";
2502 /* STT_SECTION: symbol is associated with a section. */
2503 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2504 /* Symbol isn't associated with a section. Nothing to do. */
2505 continue;
2507 sec = local_sections[r_symndx];
2508 addend += sec->output_offset + sym->st_value;
2510 /* If partial_inplace, we need to store any additional addend
2511 back in the section. */
2512 if (! howto->partial_inplace)
2513 continue;
2514 /* ??? Here is a nice place to call a special_function
2515 like handler. */
2516 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2517 r = _bfd_relocate_contents (howto, input_bfd,
2518 addend, contents + offset);
2519 else
2521 Elf_Internal_Rela *lorel;
2523 /* We allow an arbitrary number of HI16 relocs before the
2524 LO16 reloc. This permits gcc to emit the HI and LO relocs
2525 itself. */
2526 for (lorel = rel + 1;
2527 (lorel < relend
2528 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2529 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2530 lorel++)
2531 continue;
2532 if (lorel < relend
2533 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2535 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2536 contents, addend);
2537 r = bfd_reloc_ok;
2539 else
2540 r = _bfd_relocate_contents (howto, input_bfd,
2541 addend, contents + offset);
2544 else
2546 bfd_vma relocation;
2548 /* This is a final link. */
2549 sym = NULL;
2550 sec = NULL;
2551 h = NULL;
2553 if (r_symndx < symtab_hdr->sh_info)
2555 /* Local symbol. */
2556 sym = local_syms + r_symndx;
2557 sec = local_sections[r_symndx];
2558 sym_name = "<local symbol>";
2560 if (!use_rel)
2562 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2563 addend = rel->r_addend;
2565 if (info->relocatable)
2567 /* This is a relocatable link. We don't have to change
2568 anything, unless the reloc is against a section symbol,
2569 in which case we have to adjust according to where the
2570 section symbol winds up in the output section. */
2571 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2572 rel->r_addend += sec->output_offset + sym->st_value;
2574 continue;
2577 else
2579 relocation = (sec->output_section->vma
2580 + sec->output_offset
2581 + sym->st_value);
2584 else
2586 /* External symbol. */
2587 if (info->relocatable && !use_rel)
2588 continue;
2590 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2591 while (h->root.type == bfd_link_hash_indirect
2592 || h->root.type == bfd_link_hash_warning)
2593 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2594 sym_name = h->root.root.string;
2596 if (h->root.type == bfd_link_hash_defined
2597 || h->root.type == bfd_link_hash_defweak)
2599 bfd_boolean dyn;
2600 sec = h->root.u.def.section;
2602 dyn = htab->root.dynamic_sections_created;
2603 sec = h->root.u.def.section;
2604 if (r_type == R_M32R_GOTPC24
2605 || (r_type == R_M32R_GOTPC_HI_ULO
2606 || r_type == R_M32R_GOTPC_HI_SLO
2607 || r_type == R_M32R_GOTPC_LO)
2608 || (r_type == R_M32R_26_PLTREL
2609 && h->plt.offset != (bfd_vma) -1)
2610 || ((r_type == R_M32R_GOT24
2611 || r_type == R_M32R_GOT16_HI_ULO
2612 || r_type == R_M32R_GOT16_HI_SLO
2613 || r_type == R_M32R_GOT16_LO)
2614 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2615 info->shared, h)
2616 && (! info->shared
2617 || (! info->symbolic && h->dynindx != -1)
2618 || !h->def_regular))
2619 || (info->shared
2620 && ((! info->symbolic && h->dynindx != -1)
2621 || !h->def_regular)
2622 && (((r_type == R_M32R_16_RELA
2623 || r_type == R_M32R_32_RELA
2624 || r_type == R_M32R_24_RELA
2625 || r_type == R_M32R_HI16_ULO_RELA
2626 || r_type == R_M32R_HI16_SLO_RELA
2627 || r_type == R_M32R_LO16_RELA)
2628 && !h->forced_local)
2629 || r_type == R_M32R_REL32
2630 || r_type == R_M32R_10_PCREL_RELA
2631 || r_type == R_M32R_18_PCREL_RELA
2632 || r_type == R_M32R_26_PCREL_RELA)
2633 && ((input_section->flags & SEC_ALLOC) != 0
2634 /* DWARF will emit R_M32R_16(24,32) relocations
2635 in its sections against symbols defined
2636 externally in shared libraries. We can't do
2637 anything with them here. */
2638 || ((input_section->flags & SEC_DEBUGGING) != 0
2639 && h->def_dynamic))))
2641 /* In these cases, we don't need the relocation
2642 value. We check specially because in some
2643 obscure cases sec->output_section will be NULL. */
2644 relocation = 0;
2646 else if (sec->output_section == NULL)
2648 (*_bfd_error_handler)
2649 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
2650 bfd_get_filename (input_bfd), h->root.root.string,
2651 bfd_get_section_name (input_bfd, input_section));
2653 relocation = 0;
2655 else
2656 relocation = (h->root.u.def.value
2657 + sec->output_section->vma
2658 + sec->output_offset);
2660 else if (h->root.type == bfd_link_hash_undefweak)
2661 relocation = 0;
2662 else if (info->unresolved_syms_in_objects == RM_IGNORE
2663 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2664 relocation = 0;
2665 else
2667 if (! ((*info->callbacks->undefined_symbol)
2668 (info, h->root.root.string, input_bfd,
2669 input_section, offset,
2670 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2671 || ELF_ST_VISIBILITY (h->other)))))
2672 return FALSE;
2673 relocation = 0;
2677 /* Sanity check the address. */
2678 if (offset > high_address)
2680 r = bfd_reloc_outofrange;
2681 goto check_reloc;
2684 switch ((int) r_type)
2686 case R_M32R_GOTOFF:
2687 /* Relocation is relative to the start of the global offset
2688 table (for ld24 rx, #uimm24). eg access at label+addend
2690 ld24 rx. #label@GOTOFF + addend
2691 sub rx, r12. */
2693 BFD_ASSERT (sgot != NULL);
2695 relocation = -(relocation - sgot->output_section->vma);
2696 rel->r_addend = -rel->r_addend;
2697 break;
2699 case R_M32R_GOTOFF_HI_ULO:
2700 case R_M32R_GOTOFF_HI_SLO:
2701 case R_M32R_GOTOFF_LO:
2702 BFD_ASSERT (sgot != NULL);
2704 relocation -= sgot->output_section->vma;
2706 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2707 && ((relocation + rel->r_addend) & 0x8000))
2708 rel->r_addend += 0x10000;
2709 break;
2711 case R_M32R_GOTPC24:
2712 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2713 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2715 relocation = sgot->output_section->vma;
2716 break;
2718 case R_M32R_GOTPC_HI_ULO:
2719 case R_M32R_GOTPC_HI_SLO:
2720 case R_M32R_GOTPC_LO:
2722 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2723 bl .+4
2724 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2725 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2727 bl .+4
2728 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2729 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2731 relocation = sgot->output_section->vma;
2732 relocation -= (input_section->output_section->vma
2733 + input_section->output_offset
2734 + rel->r_offset);
2735 if ((r_type == R_M32R_GOTPC_HI_SLO)
2736 && ((relocation + rel->r_addend) & 0x8000))
2737 rel->r_addend += 0x10000;
2739 break;
2741 case R_M32R_GOT16_HI_ULO:
2742 case R_M32R_GOT16_HI_SLO:
2743 case R_M32R_GOT16_LO:
2744 /* Fall through. */
2745 case R_M32R_GOT24:
2746 /* Relocation is to the entry for this symbol in the global
2747 offset table. */
2748 BFD_ASSERT (sgot != NULL);
2750 if (h != NULL)
2752 bfd_boolean dyn;
2753 bfd_vma off;
2755 off = h->got.offset;
2756 BFD_ASSERT (off != (bfd_vma) -1);
2758 dyn = htab->root.dynamic_sections_created;
2759 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2760 || (info->shared
2761 && (info->symbolic
2762 || h->dynindx == -1
2763 || h->forced_local)
2764 && h->def_regular))
2766 /* This is actually a static link, or it is a
2767 -Bsymbolic link and the symbol is defined
2768 locally, or the symbol was forced to be local
2769 because of a version file. We must initialize
2770 this entry in the global offset table. Since the
2771 offset must always be a multiple of 4, we use the
2772 least significant bit to record whether we have
2773 initialized it already.
2775 When doing a dynamic link, we create a .rela.got
2776 relocation entry to initialize the value. This
2777 is done in the finish_dynamic_symbol routine. */
2778 if ((off & 1) != 0)
2779 off &= ~1;
2780 else
2782 bfd_put_32 (output_bfd, relocation,
2783 sgot->contents + off);
2784 h->got.offset |= 1;
2788 relocation = sgot->output_offset + off;
2790 else
2792 bfd_vma off;
2793 bfd_byte *loc;
2795 BFD_ASSERT (local_got_offsets != NULL
2796 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2798 off = local_got_offsets[r_symndx];
2800 /* The offset must always be a multiple of 4. We use
2801 the least significant bit to record whether we have
2802 already processed this entry. */
2803 if ((off & 1) != 0)
2804 off &= ~1;
2805 else
2807 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2809 if (info->shared)
2811 asection *srelgot;
2812 Elf_Internal_Rela outrel;
2814 /* We need to generate a R_M32R_RELATIVE reloc
2815 for the dynamic linker. */
2816 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2817 BFD_ASSERT (srelgot != NULL);
2819 outrel.r_offset = (sgot->output_section->vma
2820 + sgot->output_offset
2821 + off);
2822 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2823 outrel.r_addend = relocation;
2824 loc = srelgot->contents;
2825 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2826 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2827 ++srelgot->reloc_count;
2830 local_got_offsets[r_symndx] |= 1;
2833 relocation = sgot->output_offset + off;
2835 if ((r_type == R_M32R_GOT16_HI_SLO)
2836 && ((relocation + rel->r_addend) & 0x8000))
2837 rel->r_addend += 0x10000;
2839 break;
2841 case R_M32R_26_PLTREL:
2842 /* Relocation is to the entry for this symbol in the
2843 procedure linkage table. */
2845 /* The native assembler will generate a 26_PLTREL reloc
2846 for a local symbol if you assemble a call from one
2847 section to another when using -K pic. */
2848 if (h == NULL)
2849 break;
2851 if (h->forced_local)
2852 break;
2854 if (h->plt.offset == (bfd_vma) -1)
2855 /* We didn't make a PLT entry for this symbol. This
2856 happens when statically linking PIC code, or when
2857 using -Bsymbolic. */
2858 break;
2860 relocation = (splt->output_section->vma
2861 + splt->output_offset
2862 + h->plt.offset);
2863 break;
2865 case R_M32R_HI16_SLO_RELA:
2866 if ((relocation + rel->r_addend) & 0x8000)
2867 rel->r_addend += 0x10000;
2868 /* Fall through. */
2870 case R_M32R_16_RELA:
2871 case R_M32R_24_RELA:
2872 case R_M32R_32_RELA:
2873 case R_M32R_REL32:
2874 case R_M32R_18_PCREL_RELA:
2875 case R_M32R_26_PCREL_RELA:
2876 case R_M32R_HI16_ULO_RELA:
2877 case R_M32R_LO16_RELA:
2878 if (info->shared
2879 && r_symndx != 0
2880 && (input_section->flags & SEC_ALLOC) != 0
2881 && ((r_type != R_M32R_18_PCREL_RELA
2882 && r_type != R_M32R_26_PCREL_RELA
2883 && r_type != R_M32R_REL32)
2884 || (h != NULL
2885 && h->dynindx != -1
2886 && (! info->symbolic
2887 || !h->def_regular))))
2889 Elf_Internal_Rela outrel;
2890 bfd_boolean skip, relocate;
2891 bfd_byte *loc;
2893 /* When generating a shared object, these relocations
2894 are copied into the output file to be resolved at run
2895 time. */
2896 if (sreloc == NULL)
2898 const char *name;
2900 name = (bfd_elf_string_from_elf_section
2901 (input_bfd,
2902 elf_elfheader (input_bfd)->e_shstrndx,
2903 elf_section_data (input_section)->rel_hdr.sh_name));
2904 if (name == NULL)
2905 return FALSE;
2907 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2908 && strcmp (bfd_get_section_name (input_bfd,
2909 input_section),
2910 name + 5) == 0);
2912 sreloc = bfd_get_section_by_name (dynobj, name);
2913 BFD_ASSERT (sreloc != NULL);
2916 skip = FALSE;
2917 relocate = FALSE;
2919 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2920 info,
2921 input_section,
2922 rel->r_offset);
2923 if (outrel.r_offset == (bfd_vma) -1)
2924 skip = TRUE;
2925 else if (outrel.r_offset == (bfd_vma) -2)
2926 skip = relocate = TRUE;
2927 outrel.r_offset += (input_section->output_section->vma
2928 + input_section->output_offset);
2930 if (skip)
2931 memset (&outrel, 0, sizeof outrel);
2932 else if (r_type == R_M32R_18_PCREL_RELA
2933 || r_type == R_M32R_26_PCREL_RELA
2934 || r_type == R_M32R_REL32)
2936 BFD_ASSERT (h != NULL && h->dynindx != -1);
2937 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2938 outrel.r_addend = rel->r_addend;
2940 else
2942 /* h->dynindx may be -1 if this symbol was marked to
2943 become local. */
2944 if (h == NULL
2945 || ((info->symbolic || h->dynindx == -1)
2946 && h->def_regular))
2948 relocate = TRUE;
2949 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2950 outrel.r_addend = relocation + rel->r_addend;
2952 else
2954 BFD_ASSERT (h->dynindx != -1);
2955 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2956 outrel.r_addend = relocation + rel->r_addend;
2960 loc = sreloc->contents;
2961 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2962 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2963 ++sreloc->reloc_count;
2965 /* If this reloc is against an external symbol, we do
2966 not want to fiddle with the addend. Otherwise, we
2967 need to include the symbol value so that it becomes
2968 an addend for the dynamic reloc. */
2969 if (! relocate)
2970 continue;
2972 break;
2974 case (int) R_M32R_10_PCREL :
2975 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2976 contents, offset,
2977 sec, relocation, addend);
2978 goto check_reloc;
2980 case (int) R_M32R_HI16_SLO :
2981 case (int) R_M32R_HI16_ULO :
2983 Elf_Internal_Rela *lorel;
2985 /* We allow an arbitrary number of HI16 relocs before the
2986 LO16 reloc. This permits gcc to emit the HI and LO relocs
2987 itself. */
2988 for (lorel = rel + 1;
2989 (lorel < relend
2990 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2991 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2992 lorel++)
2993 continue;
2994 if (lorel < relend
2995 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2997 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2998 contents, relocation + addend);
2999 r = bfd_reloc_ok;
3001 else
3002 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3003 contents, offset,
3004 relocation, addend);
3007 goto check_reloc;
3009 case (int) R_M32R_SDA16_RELA:
3010 case (int) R_M32R_SDA16 :
3012 const char *name;
3014 BFD_ASSERT (sec != NULL);
3015 name = bfd_get_section_name (abfd, sec);
3017 if ( strcmp (name, ".sdata") == 0
3018 || strcmp (name, ".sbss") == 0
3019 || strcmp (name, ".scommon") == 0)
3021 bfd_vma sda_base;
3022 bfd *out_bfd = sec->output_section->owner;
3024 r = m32r_elf_final_sda_base (out_bfd, info,
3025 &errmsg,
3026 &sda_base);
3027 if (r != bfd_reloc_ok)
3029 ret = FALSE;
3030 goto check_reloc;
3033 /* At this point `relocation' contains the object's
3034 address. */
3035 relocation -= sda_base;
3036 /* Now it contains the offset from _SDA_BASE_. */
3038 else
3040 (*_bfd_error_handler)
3041 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3042 input_bfd,
3043 sec,
3044 sym_name,
3045 m32r_elf_howto_table[(int) r_type].name);
3046 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3047 ret = FALSE;
3048 continue;
3051 /* Fall through. */
3053 default : /* OLD_M32R_RELOC */
3055 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3056 contents, offset,
3057 relocation, addend);
3058 goto check_reloc;
3061 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3062 contents, rel->r_offset,
3063 relocation, rel->r_addend);
3067 check_reloc:
3069 if (r != bfd_reloc_ok)
3071 /* FIXME: This should be generic enough to go in a utility. */
3072 const char *name;
3074 if (h != NULL)
3075 name = h->root.root.string;
3076 else
3078 name = (bfd_elf_string_from_elf_section
3079 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3080 if (name == NULL || *name == '\0')
3081 name = bfd_section_name (input_bfd, sec);
3084 if (errmsg != NULL)
3085 goto common_error;
3087 switch (r)
3089 case bfd_reloc_overflow:
3090 if (! ((*info->callbacks->reloc_overflow)
3091 (info, (h ? &h->root : NULL), name, howto->name,
3092 (bfd_vma) 0, input_bfd, input_section, offset)))
3093 return FALSE;
3094 break;
3096 case bfd_reloc_undefined:
3097 if (! ((*info->callbacks->undefined_symbol)
3098 (info, name, input_bfd, input_section,
3099 offset, TRUE)))
3100 return FALSE;
3101 break;
3103 case bfd_reloc_outofrange:
3104 errmsg = _("internal error: out of range error");
3105 goto common_error;
3107 case bfd_reloc_notsupported:
3108 errmsg = _("internal error: unsupported relocation error");
3109 goto common_error;
3111 case bfd_reloc_dangerous:
3112 errmsg = _("internal error: dangerous error");
3113 goto common_error;
3115 default:
3116 errmsg = _("internal error: unknown error");
3117 /* fall through */
3119 common_error:
3120 if (!((*info->callbacks->warning)
3121 (info, errmsg, name, input_bfd, input_section,
3122 offset)))
3123 return FALSE;
3124 break;
3129 return ret;
3132 /* Finish up dynamic symbol handling. We set the contents of various
3133 dynamic sections here. */
3135 static bfd_boolean
3136 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3137 struct bfd_link_info *info,
3138 struct elf_link_hash_entry *h,
3139 Elf_Internal_Sym *sym)
3141 struct elf_m32r_link_hash_table *htab;
3142 bfd *dynobj;
3143 bfd_byte *loc;
3145 #ifdef DEBUG_PIC
3146 printf ("m32r_elf_finish_dynamic_symbol()\n");
3147 #endif
3149 htab = m32r_elf_hash_table (info);
3150 dynobj = htab->root.dynobj;
3152 if (h->plt.offset != (bfd_vma) -1)
3154 asection *splt;
3155 asection *sgot;
3156 asection *srela;
3158 bfd_vma plt_index;
3159 bfd_vma got_offset;
3160 Elf_Internal_Rela rela;
3162 /* This symbol has an entry in the procedure linkage table. Set
3163 it up. */
3165 BFD_ASSERT (h->dynindx != -1);
3167 splt = htab->splt;
3168 sgot = htab->sgotplt;
3169 srela = htab->srelplt;
3170 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3172 /* Get the index in the procedure linkage table which
3173 corresponds to this symbol. This is the index of this symbol
3174 in all the symbols for which we are making plt entries. The
3175 first entry in the procedure linkage table is reserved. */
3176 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3178 /* Get the offset into the .got table of the entry that
3179 corresponds to this function. Each .got entry is 4 bytes.
3180 The first three are reserved. */
3181 got_offset = (plt_index + 3) * 4;
3183 /* Fill in the entry in the procedure linkage table. */
3184 if (! info->shared)
3186 bfd_put_32 (output_bfd,
3187 (PLT_ENTRY_WORD0b
3188 + (((sgot->output_section->vma
3189 + sgot->output_offset
3190 + got_offset) >> 16) & 0xffff)),
3191 splt->contents + h->plt.offset);
3192 bfd_put_32 (output_bfd,
3193 (PLT_ENTRY_WORD1b
3194 + ((sgot->output_section->vma
3195 + sgot->output_offset
3196 + got_offset) & 0xffff)),
3197 splt->contents + h->plt.offset + 4);
3198 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3199 splt->contents + h->plt.offset + 8);
3200 bfd_put_32 (output_bfd,
3201 (PLT_ENTRY_WORD3
3202 + plt_index * sizeof (Elf32_External_Rela)),
3203 splt->contents + h->plt.offset + 12);
3204 bfd_put_32 (output_bfd,
3205 (PLT_ENTRY_WORD4
3206 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3207 splt->contents + h->plt.offset + 16);
3209 else
3211 bfd_put_32 (output_bfd,
3212 PLT_ENTRY_WORD0 + got_offset,
3213 splt->contents + h->plt.offset);
3214 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3215 splt->contents + h->plt.offset + 4);
3216 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3217 splt->contents + h->plt.offset + 8);
3218 bfd_put_32 (output_bfd,
3219 (PLT_ENTRY_WORD3
3220 + plt_index * sizeof (Elf32_External_Rela)),
3221 splt->contents + h->plt.offset + 12);
3222 bfd_put_32 (output_bfd,
3223 (PLT_ENTRY_WORD4
3224 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3225 splt->contents + h->plt.offset + 16);
3228 /* Fill in the entry in the global offset table. */
3229 bfd_put_32 (output_bfd,
3230 (splt->output_section->vma
3231 + splt->output_offset
3232 + h->plt.offset
3233 + 12), /* same offset */
3234 sgot->contents + got_offset);
3236 /* Fill in the entry in the .rela.plt section. */
3237 rela.r_offset = (sgot->output_section->vma
3238 + sgot->output_offset
3239 + got_offset);
3240 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3241 rela.r_addend = 0;
3242 loc = srela->contents;
3243 loc += plt_index * sizeof (Elf32_External_Rela);
3244 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3246 if (!h->def_regular)
3248 /* Mark the symbol as undefined, rather than as defined in
3249 the .plt section. Leave the value alone. */
3250 sym->st_shndx = SHN_UNDEF;
3254 if (h->got.offset != (bfd_vma) -1)
3256 asection *sgot;
3257 asection *srela;
3258 Elf_Internal_Rela rela;
3260 /* This symbol has an entry in the global offset table. Set it
3261 up. */
3263 sgot = htab->sgot;
3264 srela = htab->srelgot;
3265 BFD_ASSERT (sgot != NULL && srela != NULL);
3267 rela.r_offset = (sgot->output_section->vma
3268 + sgot->output_offset
3269 + (h->got.offset &~ 1));
3271 /* If this is a -Bsymbolic link, and the symbol is defined
3272 locally, we just want to emit a RELATIVE reloc. Likewise if
3273 the symbol was forced to be local because of a version file.
3274 The entry in the global offset table will already have been
3275 initialized in the relocate_section function. */
3276 if (info->shared
3277 && (info->symbolic
3278 || h->dynindx == -1
3279 || h->forced_local)
3280 && h->def_regular)
3282 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3283 rela.r_addend = (h->root.u.def.value
3284 + h->root.u.def.section->output_section->vma
3285 + h->root.u.def.section->output_offset);
3287 else
3289 BFD_ASSERT ((h->got.offset & 1) == 0);
3290 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3291 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3292 rela.r_addend = 0;
3295 loc = srela->contents;
3296 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3297 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3298 ++srela->reloc_count;
3301 if (h->needs_copy)
3303 asection *s;
3304 Elf_Internal_Rela rela;
3306 /* This symbols needs a copy reloc. Set it up. */
3308 BFD_ASSERT (h->dynindx != -1
3309 && (h->root.type == bfd_link_hash_defined
3310 || h->root.type == bfd_link_hash_defweak));
3312 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3313 ".rela.bss");
3314 BFD_ASSERT (s != NULL);
3316 rela.r_offset = (h->root.u.def.value
3317 + h->root.u.def.section->output_section->vma
3318 + h->root.u.def.section->output_offset);
3319 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3320 rela.r_addend = 0;
3321 loc = s->contents;
3322 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3323 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3324 ++s->reloc_count;
3327 /* Mark some specially defined symbols as absolute. */
3328 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3329 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3330 sym->st_shndx = SHN_ABS;
3332 return TRUE;
3336 /* Finish up the dynamic sections. */
3338 static bfd_boolean
3339 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3340 struct bfd_link_info *info)
3342 struct elf_m32r_link_hash_table *htab;
3343 bfd *dynobj;
3344 asection *sdyn;
3345 asection *sgot;
3347 #ifdef DEBUG_PIC
3348 printf ("m32r_elf_finish_dynamic_sections()\n");
3349 #endif
3351 htab = m32r_elf_hash_table (info);
3352 dynobj = htab->root.dynobj;
3354 sgot = htab->sgotplt;
3355 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3357 if (htab->root.dynamic_sections_created)
3359 asection *splt;
3360 Elf32_External_Dyn *dyncon, *dynconend;
3362 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3364 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3365 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3367 for (; dyncon < dynconend; dyncon++)
3369 Elf_Internal_Dyn dyn;
3370 const char *name;
3371 asection *s;
3373 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3375 switch (dyn.d_tag)
3377 default:
3378 break;
3380 case DT_PLTGOT:
3381 name = ".got";
3382 s = htab->sgot->output_section;
3383 goto get_vma;
3384 case DT_JMPREL:
3385 name = ".rela.plt";
3386 s = htab->srelplt->output_section;
3387 get_vma:
3388 BFD_ASSERT (s != NULL);
3389 dyn.d_un.d_ptr = s->vma;
3390 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3391 break;
3393 case DT_PLTRELSZ:
3394 s = htab->srelplt->output_section;
3395 BFD_ASSERT (s != NULL);
3396 dyn.d_un.d_val = s->size;
3397 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3398 break;
3400 case DT_RELASZ:
3401 /* My reading of the SVR4 ABI indicates that the
3402 procedure linkage table relocs (DT_JMPREL) should be
3403 included in the overall relocs (DT_RELA). This is
3404 what Solaris does. However, UnixWare can not handle
3405 that case. Therefore, we override the DT_RELASZ entry
3406 here to make it not include the JMPREL relocs. Since
3407 the linker script arranges for .rela.plt to follow all
3408 other relocation sections, we don't have to worry
3409 about changing the DT_RELA entry. */
3410 if (htab->srelplt != NULL)
3412 s = htab->srelplt->output_section;
3413 dyn.d_un.d_val -= s->size;
3415 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3416 break;
3420 /* Fill in the first entry in the procedure linkage table. */
3421 splt = htab->splt;
3422 if (splt && splt->size > 0)
3424 if (info->shared)
3426 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3427 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3428 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3429 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3430 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3432 else
3434 unsigned long addr;
3435 /* addr = .got + 4 */
3436 addr = sgot->output_section->vma + sgot->output_offset + 4;
3437 bfd_put_32 (output_bfd,
3438 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3439 splt->contents);
3440 bfd_put_32 (output_bfd,
3441 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3442 splt->contents + 4);
3443 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3444 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3445 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3448 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3449 PLT_ENTRY_SIZE;
3453 /* Fill in the first three entries in the global offset table. */
3454 if (sgot && sgot->size > 0)
3456 if (sdyn == NULL)
3457 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3458 else
3459 bfd_put_32 (output_bfd,
3460 sdyn->output_section->vma + sdyn->output_offset,
3461 sgot->contents);
3462 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3463 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3465 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3468 return TRUE;
3472 /* Set the right machine number. */
3474 static bfd_boolean
3475 m32r_elf_object_p (bfd *abfd)
3477 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3479 default:
3480 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3481 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3482 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3484 return TRUE;
3487 /* Store the machine number in the flags field. */
3489 static void
3490 m32r_elf_final_write_processing (bfd *abfd,
3491 bfd_boolean linker ATTRIBUTE_UNUSED)
3493 unsigned long val;
3495 switch (bfd_get_mach (abfd))
3497 default:
3498 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3499 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3500 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3503 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3504 elf_elfheader (abfd)->e_flags |= val;
3507 /* Function to keep M32R specific file flags. */
3509 static bfd_boolean
3510 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3512 BFD_ASSERT (!elf_flags_init (abfd)
3513 || elf_elfheader (abfd)->e_flags == flags);
3515 elf_elfheader (abfd)->e_flags = flags;
3516 elf_flags_init (abfd) = TRUE;
3517 return TRUE;
3520 /* Merge backend specific data from an object file to the output
3521 object file when linking. */
3523 static bfd_boolean
3524 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3526 flagword out_flags;
3527 flagword in_flags;
3529 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3530 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3531 return TRUE;
3533 in_flags = elf_elfheader (ibfd)->e_flags;
3534 out_flags = elf_elfheader (obfd)->e_flags;
3536 if (! elf_flags_init (obfd))
3538 /* If the input is the default architecture then do not
3539 bother setting the flags for the output architecture,
3540 instead allow future merges to do this. If no future
3541 merges ever set these flags then they will retain their
3542 unitialised values, which surprise surprise, correspond
3543 to the default values. */
3544 if (bfd_get_arch_info (ibfd)->the_default)
3545 return TRUE;
3547 elf_flags_init (obfd) = TRUE;
3548 elf_elfheader (obfd)->e_flags = in_flags;
3550 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3551 && bfd_get_arch_info (obfd)->the_default)
3552 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3553 bfd_get_mach (ibfd));
3555 return TRUE;
3558 /* Check flag compatibility. */
3559 if (in_flags == out_flags)
3560 return TRUE;
3562 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3564 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3565 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3566 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3568 (*_bfd_error_handler)
3569 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3571 bfd_set_error (bfd_error_bad_value);
3572 return FALSE;
3576 return TRUE;
3579 /* Display the flags field. */
3581 static bfd_boolean
3582 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3584 FILE * file = (FILE *) ptr;
3586 BFD_ASSERT (abfd != NULL && ptr != NULL);
3588 _bfd_elf_print_private_bfd_data (abfd, ptr);
3590 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3592 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3594 default:
3595 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3596 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3597 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3600 fputc ('\n', file);
3602 return TRUE;
3605 static asection *
3606 m32r_elf_gc_mark_hook (asection *sec,
3607 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3608 Elf_Internal_Rela *rel,
3609 struct elf_link_hash_entry *h,
3610 Elf_Internal_Sym *sym)
3612 if (h != NULL)
3614 switch (ELF32_R_TYPE (rel->r_info))
3616 case R_M32R_GNU_VTINHERIT:
3617 case R_M32R_GNU_VTENTRY:
3618 case R_M32R_RELA_GNU_VTINHERIT:
3619 case R_M32R_RELA_GNU_VTENTRY:
3620 break;
3622 default:
3623 switch (h->root.type)
3625 case bfd_link_hash_defined:
3626 case bfd_link_hash_defweak:
3627 return h->root.u.def.section;
3629 case bfd_link_hash_common:
3630 return h->root.u.c.p->section;
3632 default:
3633 break;
3637 else
3638 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3640 return NULL;
3643 static bfd_boolean
3644 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3645 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3646 asection *sec ATTRIBUTE_UNUSED,
3647 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3649 /* Update the got entry reference counts for the section being removed. */
3650 Elf_Internal_Shdr *symtab_hdr;
3651 struct elf_link_hash_entry **sym_hashes;
3652 bfd_signed_vma *local_got_refcounts;
3653 const Elf_Internal_Rela *rel, *relend;
3655 elf_section_data (sec)->local_dynrel = NULL;
3657 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3658 sym_hashes = elf_sym_hashes (abfd);
3659 local_got_refcounts = elf_local_got_refcounts (abfd);
3661 relend = relocs + sec->reloc_count;
3662 for (rel = relocs; rel < relend; rel++)
3664 unsigned long r_symndx;
3665 struct elf_link_hash_entry *h = NULL;
3667 r_symndx = ELF32_R_SYM (rel->r_info);
3668 if (r_symndx >= symtab_hdr->sh_info)
3670 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3671 while (h->root.type == bfd_link_hash_indirect
3672 || h->root.type == bfd_link_hash_warning)
3673 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3676 switch (ELF32_R_TYPE (rel->r_info))
3678 case R_M32R_GOT16_HI_ULO:
3679 case R_M32R_GOT16_HI_SLO:
3680 case R_M32R_GOT16_LO:
3681 case R_M32R_GOTOFF:
3682 case R_M32R_GOTOFF_HI_ULO:
3683 case R_M32R_GOTOFF_HI_SLO:
3684 case R_M32R_GOTOFF_LO:
3685 case R_M32R_GOT24:
3686 case R_M32R_GOTPC_HI_ULO:
3687 case R_M32R_GOTPC_HI_SLO:
3688 case R_M32R_GOTPC_LO:
3689 case R_M32R_GOTPC24:
3690 if (h != NULL)
3692 if (h->got.refcount > 0)
3693 h->got.refcount--;
3695 else
3697 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3698 local_got_refcounts[r_symndx]--;
3700 break;
3702 case R_M32R_16_RELA:
3703 case R_M32R_24_RELA:
3704 case R_M32R_32_RELA:
3705 case R_M32R_REL32:
3706 case R_M32R_HI16_ULO_RELA:
3707 case R_M32R_HI16_SLO_RELA:
3708 case R_M32R_LO16_RELA:
3709 case R_M32R_SDA16_RELA:
3710 case R_M32R_18_PCREL_RELA:
3711 case R_M32R_26_PCREL_RELA:
3712 if (h != NULL)
3714 struct elf_m32r_link_hash_entry *eh;
3715 struct elf_m32r_dyn_relocs **pp;
3716 struct elf_m32r_dyn_relocs *p;
3718 if (!info->shared && h->plt.refcount > 0)
3719 h->plt.refcount -= 1;
3721 eh = (struct elf_m32r_link_hash_entry *) h;
3723 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3724 if (p->sec == sec)
3726 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3727 || ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3728 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3729 p->pc_count -= 1;
3730 p->count -= 1;
3731 if (p->count == 0)
3732 *pp = p->next;
3733 break;
3736 break;
3738 case R_M32R_26_PLTREL:
3739 if (h != NULL)
3741 if (h->plt.refcount > 0)
3742 h->plt.refcount--;
3744 break;
3746 default:
3747 break;
3751 return TRUE;
3754 /* Look through the relocs for a section during the first phase.
3755 Since we don't do .gots or .plts, we just need to consider the
3756 virtual table relocs for gc. */
3758 static bfd_boolean
3759 m32r_elf_check_relocs (bfd *abfd,
3760 struct bfd_link_info *info,
3761 asection *sec,
3762 const Elf_Internal_Rela *relocs)
3764 Elf_Internal_Shdr *symtab_hdr;
3765 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3766 const Elf_Internal_Rela *rel;
3767 const Elf_Internal_Rela *rel_end;
3768 struct elf_m32r_link_hash_table *htab;
3769 bfd *dynobj;
3770 bfd_vma *local_got_offsets;
3771 asection *sgot, *srelgot, *sreloc;
3773 if (info->relocatable)
3774 return TRUE;
3776 sgot = srelgot = sreloc = NULL;
3778 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3779 sym_hashes = elf_sym_hashes (abfd);
3780 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3781 if (!elf_bad_symtab (abfd))
3782 sym_hashes_end -= symtab_hdr->sh_info;
3784 htab = m32r_elf_hash_table (info);
3785 dynobj = htab->root.dynobj;
3786 local_got_offsets = elf_local_got_offsets (abfd);
3788 rel_end = relocs + sec->reloc_count;
3789 for (rel = relocs; rel < rel_end; rel++)
3791 int r_type;
3792 struct elf_link_hash_entry *h;
3793 unsigned long r_symndx;
3795 r_symndx = ELF32_R_SYM (rel->r_info);
3796 r_type = ELF32_R_TYPE (rel->r_info);
3797 if (r_symndx < symtab_hdr->sh_info)
3798 h = NULL;
3799 else
3801 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3802 while (h->root.type == bfd_link_hash_indirect
3803 || h->root.type == bfd_link_hash_warning)
3804 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3807 /* Some relocs require a global offset table. */
3808 if (htab->sgot == NULL)
3810 switch (r_type)
3812 case R_M32R_GOT16_HI_ULO:
3813 case R_M32R_GOT16_HI_SLO:
3814 case R_M32R_GOTOFF:
3815 case R_M32R_GOTOFF_HI_ULO:
3816 case R_M32R_GOTOFF_HI_SLO:
3817 case R_M32R_GOTOFF_LO:
3818 case R_M32R_GOT16_LO:
3819 case R_M32R_GOTPC24:
3820 case R_M32R_GOTPC_HI_ULO:
3821 case R_M32R_GOTPC_HI_SLO:
3822 case R_M32R_GOTPC_LO:
3823 case R_M32R_GOT24:
3824 if (dynobj == NULL)
3825 htab->root.dynobj = dynobj = abfd;
3826 if (! create_got_section (dynobj, info))
3827 return FALSE;
3828 break;
3830 default:
3831 break;
3835 switch (r_type)
3837 case R_M32R_GOT16_HI_ULO:
3838 case R_M32R_GOT16_HI_SLO:
3839 case R_M32R_GOT16_LO:
3840 case R_M32R_GOT24:
3842 if (h != NULL)
3843 h->got.refcount += 1;
3844 else
3846 bfd_signed_vma *local_got_refcounts;
3848 /* This is a global offset table entry for a local
3849 symbol. */
3850 local_got_refcounts = elf_local_got_refcounts (abfd);
3851 if (local_got_refcounts == NULL)
3853 bfd_size_type size;
3855 size = symtab_hdr->sh_info;
3856 size *= sizeof (bfd_signed_vma);
3857 local_got_refcounts = bfd_zalloc (abfd, size);
3858 if (local_got_refcounts == NULL)
3859 return FALSE;
3860 elf_local_got_refcounts (abfd) = local_got_refcounts;
3862 local_got_refcounts[r_symndx] += 1;
3864 break;
3866 case R_M32R_26_PLTREL:
3867 /* This symbol requires a procedure linkage table entry. We
3868 actually build the entry in adjust_dynamic_symbol,
3869 because this might be a case of linking PIC code without
3870 linking in any dynamic objects, in which case we don't
3871 need to generate a procedure linkage table after all. */
3873 /* If this is a local symbol, we resolve it directly without
3874 creating a procedure linkage table entry. */
3875 if (h == NULL)
3876 continue;
3878 if (h->forced_local)
3879 break;
3881 h->needs_plt = 1;
3882 h->plt.refcount += 1;
3883 break;
3885 case R_M32R_16_RELA:
3886 case R_M32R_24_RELA:
3887 case R_M32R_32_RELA:
3888 case R_M32R_REL32:
3889 case R_M32R_HI16_ULO_RELA:
3890 case R_M32R_HI16_SLO_RELA:
3891 case R_M32R_LO16_RELA:
3892 case R_M32R_SDA16_RELA:
3893 case R_M32R_18_PCREL_RELA:
3894 case R_M32R_26_PCREL_RELA:
3896 if (h != NULL && !info->shared)
3898 h->non_got_ref = 1;
3899 h->plt.refcount += 1;
3902 /* If we are creating a shared library, and this is a reloc
3903 against a global symbol, or a non PC relative reloc
3904 against a local symbol, then we need to copy the reloc
3905 into the shared library. However, if we are linking with
3906 -Bsymbolic, we do not need to copy a reloc against a
3907 global symbol which is defined in an object we are
3908 including in the link (i.e., DEF_REGULAR is set). At
3909 this point we have not seen all the input files, so it is
3910 possible that DEF_REGULAR is not set now but will be set
3911 later (it is never cleared). We account for that
3912 possibility below by storing information in the
3913 dyn_relocs field of the hash table entry. A similar
3914 situation occurs when creating shared libraries and symbol
3915 visibility changes render the symbol local.
3917 If on the other hand, we are creating an executable, we
3918 may need to keep relocations for symbols satisfied by a
3919 dynamic library if we manage to avoid copy relocs for the
3920 symbol. */
3921 if ((info->shared
3922 && (sec->flags & SEC_ALLOC) != 0
3923 && ((r_type != R_M32R_26_PCREL_RELA
3924 && r_type != R_M32R_18_PCREL_RELA
3925 && r_type != R_M32R_REL32)
3926 || (h != NULL
3927 && (! info->symbolic
3928 || h->root.type == bfd_link_hash_defweak
3929 || !h->def_regular))))
3930 || (!info->shared
3931 && (sec->flags & SEC_ALLOC) != 0
3932 && h != NULL
3933 && (h->root.type == bfd_link_hash_defweak
3934 || !h->def_regular)))
3936 struct elf_m32r_dyn_relocs *p;
3937 struct elf_m32r_dyn_relocs **head;
3939 if (dynobj == NULL)
3940 htab->root.dynobj = dynobj = abfd;
3942 /* When creating a shared object, we must copy these
3943 relocs into the output file. We create a reloc
3944 section in dynobj and make room for the reloc. */
3945 if (sreloc == NULL)
3947 const char *name;
3949 name = (bfd_elf_string_from_elf_section
3950 (abfd,
3951 elf_elfheader (abfd)->e_shstrndx,
3952 elf_section_data (sec)->rel_hdr.sh_name));
3953 if (name == NULL)
3954 return FALSE;
3956 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3957 && strcmp (bfd_get_section_name (abfd, sec),
3958 name + 5) == 0);
3960 sreloc = bfd_get_section_by_name (dynobj, name);
3961 if (sreloc == NULL)
3963 flagword flags;
3965 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3966 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3967 if ((sec->flags & SEC_ALLOC) != 0)
3968 flags |= SEC_ALLOC | SEC_LOAD;
3969 sreloc = bfd_make_section_with_flags (dynobj,
3970 name,
3971 flags);
3972 if (sreloc == NULL
3973 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
3974 return FALSE;
3976 elf_section_data (sec)->sreloc = sreloc;
3979 /* If this is a global symbol, we count the number of
3980 relocations we need for this symbol. */
3981 if (h != NULL)
3982 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3983 else
3985 asection *s;
3987 /* Track dynamic relocs needed for local syms too. */
3988 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3989 sec, r_symndx);
3990 if (s == NULL)
3991 return FALSE;
3993 head = ((struct elf_m32r_dyn_relocs **)
3994 &elf_section_data (s)->local_dynrel);
3997 p = *head;
3998 if (p == NULL || p->sec != sec)
4000 bfd_size_type amt = sizeof (*p);
4002 p = bfd_alloc (dynobj, amt);
4003 if (p == NULL)
4004 return FALSE;
4005 p->next = *head;
4006 *head = p;
4007 p->sec = sec;
4008 p->count = 0;
4009 p->pc_count = 0;
4012 p->count += 1;
4013 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4014 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA)
4015 p->pc_count += 1;
4017 break;
4019 /* This relocation describes the C++ object vtable hierarchy.
4020 Reconstruct it for later use during GC. */
4021 case R_M32R_RELA_GNU_VTINHERIT:
4022 case R_M32R_GNU_VTINHERIT:
4023 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4024 return FALSE;
4025 break;
4027 /* This relocation describes which C++ vtable entries are actually
4028 used. Record for later use during GC. */
4029 case R_M32R_GNU_VTENTRY:
4030 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4031 return FALSE;
4032 break;
4033 case R_M32R_RELA_GNU_VTENTRY:
4034 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4035 return FALSE;
4036 break;
4040 return TRUE;
4043 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4045 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4046 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4047 { NULL, 0, 0, 0, 0 }
4050 static bfd_boolean
4051 m32r_elf_fake_sections (bfd *abfd,
4052 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4053 asection *sec)
4055 const char *name;
4057 name = bfd_get_section_name (abfd, sec);
4059 /* The generic elf_fake_sections will set up REL_HDR using the
4060 default kind of relocations. But, we may actually need both
4061 kinds of relocations, so we set up the second header here.
4063 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4064 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4065 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4066 of the resulting empty .rela.<section> sections starts with
4067 sh_offset == object size, and ld doesn't allow that. While the check
4068 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4069 avoided by not emitting those useless sections in the first place. */
4070 if ((sec->flags & SEC_RELOC) != 0)
4072 struct bfd_elf_section_data *esd;
4073 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4075 esd = elf_section_data (sec);
4076 BFD_ASSERT (esd->rel_hdr2 == NULL);
4077 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4078 if (!esd->rel_hdr2)
4079 return FALSE;
4080 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4081 !sec->use_rela_p);
4084 return TRUE;
4087 static enum elf_reloc_type_class
4088 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4090 switch ((int) ELF32_R_TYPE (rela->r_info))
4092 case R_M32R_RELATIVE: return reloc_class_relative;
4093 case R_M32R_JMP_SLOT: return reloc_class_plt;
4094 case R_M32R_COPY: return reloc_class_copy;
4095 default: return reloc_class_normal;
4099 #define ELF_ARCH bfd_arch_m32r
4100 #define ELF_MACHINE_CODE EM_M32R
4101 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4102 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4104 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4105 #define TARGET_BIG_NAME "elf32-m32r"
4106 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4107 #define TARGET_LITTLE_NAME "elf32-m32rle"
4109 #define elf_info_to_howto m32r_info_to_howto
4110 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4111 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4112 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4113 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4114 #define elf_backend_relocate_section m32r_elf_relocate_section
4115 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4116 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4117 #define elf_backend_check_relocs m32r_elf_check_relocs
4119 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4120 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4121 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4122 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4123 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4124 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4125 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4126 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4128 #define elf_backend_can_gc_sections 1
4129 /*#if !USE_REL
4130 #define elf_backend_rela_normal 1
4131 #endif*/
4132 #define elf_backend_can_refcount 1
4133 #define elf_backend_want_got_plt 1
4134 #define elf_backend_plt_readonly 1
4135 #define elf_backend_want_plt_sym 0
4136 #define elf_backend_got_header_size 12
4138 #define elf_backend_may_use_rel_p 1
4139 #ifdef USE_M32R_OLD_RELOC
4140 #define elf_backend_default_use_rela_p 0
4141 #define elf_backend_may_use_rela_p 0
4142 #else
4143 #define elf_backend_default_use_rela_p 1
4144 #define elf_backend_may_use_rela_p 1
4145 #define elf_backend_fake_sections m32r_elf_fake_sections
4146 #endif
4148 #define elf_backend_object_p m32r_elf_object_p
4149 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4150 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4151 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4152 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4153 #define elf_backend_special_sections m32r_elf_special_sections
4155 #include "elf32-target.h"
4157 #undef ELF_MAXPAGESIZE
4158 #define ELF_MAXPAGESIZE 0x1000
4160 #undef TARGET_BIG_SYM
4161 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4162 #undef TARGET_BIG_NAME
4163 #define TARGET_BIG_NAME "elf32-m32r-linux"
4164 #undef TARGET_LITTLE_SYM
4165 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4166 #undef TARGET_LITTLE_NAME
4167 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4168 #undef elf32_bed
4169 #define elf32_bed elf32_m32r_lin_bed
4171 #include "elf32-target.h"