* config/tc-mips.c (append_insn): Correctly handle mips16 case
[binutils.git] / bfd / elf32-m32r.c
blobcb6716f3a4d81ac1e39046eb38d0a4ec43703c16
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 if (h->size == 0)
1916 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1917 h->root.root.string);
1918 return TRUE;
1921 /* We must allocate the symbol in our .dynbss section, which will
1922 become part of the .bss section of the executable. There will be
1923 an entry for this symbol in the .dynsym section. The dynamic
1924 object will contain position independent code, so all references
1925 from the dynamic object to this symbol will go through the global
1926 offset table. The dynamic linker will use the .dynsym entry to
1927 determine the address it must put in the global offset table, so
1928 both the dynamic object and the regular object will refer to the
1929 same memory location for the variable. */
1931 htab = m32r_elf_hash_table (info);
1932 s = htab->sdynbss;
1933 BFD_ASSERT (s != NULL);
1935 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1936 to copy the initial value out of the dynamic object and into the
1937 runtime process image. We need to remember the offset into the
1938 .rela.bss section we are going to use. */
1939 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1941 asection *srel;
1943 srel = htab->srelbss;
1944 BFD_ASSERT (srel != NULL);
1945 srel->size += sizeof (Elf32_External_Rela);
1946 h->needs_copy = 1;
1949 /* We need to figure out the alignment required for this symbol. I
1950 have no idea how ELF linkers handle this. */
1951 power_of_two = bfd_log2 (h->size);
1952 if (power_of_two > 3)
1953 power_of_two = 3;
1955 /* Apply the required alignment. */
1956 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1957 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1959 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1960 return FALSE;
1963 /* Define the symbol as being at this point in the section. */
1964 h->root.u.def.section = s;
1965 h->root.u.def.value = s->size;
1967 /* Increment the section size to make room for the symbol. */
1968 s->size += h->size;
1970 return TRUE;
1973 /* Allocate space in .plt, .got and associated reloc sections for
1974 dynamic relocs. */
1976 static bfd_boolean
1977 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1979 struct bfd_link_info *info;
1980 struct elf_m32r_link_hash_table *htab;
1981 struct elf_m32r_link_hash_entry *eh;
1982 struct elf_m32r_dyn_relocs *p;
1984 if (h->root.type == bfd_link_hash_indirect)
1985 return TRUE;
1987 if (h->root.type == bfd_link_hash_warning)
1988 /* When warning symbols are created, they **replace** the "real"
1989 entry in the hash table, thus we never get to see the real
1990 symbol in a hash traversal. So look at it now. */
1991 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1993 info = (struct bfd_link_info *) inf;
1994 htab = m32r_elf_hash_table (info);
1996 eh = (struct elf_m32r_link_hash_entry *) h;
1998 if (htab->root.dynamic_sections_created
1999 && h->plt.refcount > 0)
2001 /* Make sure this symbol is output as a dynamic symbol.
2002 Undefined weak syms won't yet be marked as dynamic. */
2003 if (h->dynindx == -1
2004 && !h->forced_local)
2006 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2007 return FALSE;
2010 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2012 asection *s = htab->splt;
2014 /* If this is the first .plt entry, make room for the special
2015 first entry. */
2016 if (s->size == 0)
2017 s->size += PLT_ENTRY_SIZE;
2019 h->plt.offset = s->size;
2021 /* If this symbol is not defined in a regular file, and we are
2022 not generating a shared library, then set the symbol to this
2023 location in the .plt. This is required to make function
2024 pointers compare as equal between the normal executable and
2025 the shared library. */
2026 if (! info->shared
2027 && !h->def_regular)
2029 h->root.u.def.section = s;
2030 h->root.u.def.value = h->plt.offset;
2033 /* Make room for this entry. */
2034 s->size += PLT_ENTRY_SIZE;
2036 /* We also need to make an entry in the .got.plt section, which
2037 will be placed in the .got section by the linker script. */
2038 htab->sgotplt->size += 4;
2040 /* We also need to make an entry in the .rel.plt section. */
2041 htab->srelplt->size += sizeof (Elf32_External_Rela);
2043 else
2045 h->plt.offset = (bfd_vma) -1;
2046 h->needs_plt = 0;
2049 else
2051 h->plt.offset = (bfd_vma) -1;
2052 h->needs_plt = 0;
2055 if (h->got.refcount > 0)
2057 asection *s;
2058 bfd_boolean dyn;
2060 /* Make sure this symbol is output as a dynamic symbol.
2061 Undefined weak syms won't yet be marked as dynamic. */
2062 if (h->dynindx == -1
2063 && !h->forced_local)
2065 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2066 return FALSE;
2069 s = htab->sgot;
2071 h->got.offset = s->size;
2072 s->size += 4;
2073 dyn = htab->root.dynamic_sections_created;
2074 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2075 htab->srelgot->size += sizeof (Elf32_External_Rela);
2077 else
2078 h->got.offset = (bfd_vma) -1;
2080 if (eh->dyn_relocs == NULL)
2081 return TRUE;
2083 /* In the shared -Bsymbolic case, discard space allocated for
2084 dynamic pc-relative relocs against symbols which turn out to be
2085 defined in regular objects. For the normal shared case, discard
2086 space for pc-relative relocs that have become local due to symbol
2087 visibility changes. */
2089 if (info->shared)
2091 if (h->def_regular
2092 && (h->forced_local
2093 || info->symbolic))
2095 struct elf_m32r_dyn_relocs **pp;
2097 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2099 p->count -= p->pc_count;
2100 p->pc_count = 0;
2101 if (p->count == 0)
2102 *pp = p->next;
2103 else
2104 pp = &p->next;
2108 else
2110 /* For the non-shared case, discard space for relocs against
2111 symbols which turn out to need copy relocs or are not
2112 dynamic. */
2114 if (!h->non_got_ref
2115 && ((h->def_dynamic
2116 && !h->def_regular)
2117 || (htab->root.dynamic_sections_created
2118 && (h->root.type == bfd_link_hash_undefweak
2119 || h->root.type == bfd_link_hash_undefined))))
2121 /* Make sure this symbol is output as a dynamic symbol.
2122 Undefined weak syms won't yet be marked as dynamic. */
2123 if (h->dynindx == -1
2124 && !h->forced_local)
2126 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2127 return FALSE;
2130 /* If that succeeded, we know we'll be keeping all the
2131 relocs. */
2132 if (h->dynindx != -1)
2133 goto keep;
2136 eh->dyn_relocs = NULL;
2138 keep: ;
2141 /* Finally, allocate space. */
2142 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2144 asection *sreloc = elf_section_data (p->sec)->sreloc;
2145 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2148 return TRUE;
2151 /* Find any dynamic relocs that apply to read-only sections. */
2153 static bfd_boolean
2154 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2156 struct elf_m32r_link_hash_entry *eh;
2157 struct elf_m32r_dyn_relocs *p;
2159 if (h->root.type == bfd_link_hash_warning)
2160 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2162 eh = (struct elf_m32r_link_hash_entry *) h;
2163 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2165 asection *s = p->sec->output_section;
2167 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2169 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2171 info->flags |= DF_TEXTREL;
2173 /* Not an error, just cut short the traversal. */
2174 return FALSE;
2177 return TRUE;
2180 /* Set the sizes of the dynamic sections. */
2182 static bfd_boolean
2183 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2184 struct bfd_link_info *info)
2186 struct elf_m32r_link_hash_table *htab;
2187 bfd *dynobj;
2188 asection *s;
2189 bfd_boolean relocs;
2190 bfd *ibfd;
2192 #ifdef DEBUG_PIC
2193 printf ("m32r_elf_size_dynamic_sections()\n");
2194 #endif
2196 htab = m32r_elf_hash_table (info);
2197 dynobj = htab->root.dynobj;
2198 BFD_ASSERT (dynobj != NULL);
2200 if (htab->root.dynamic_sections_created)
2202 /* Set the contents of the .interp section to the interpreter. */
2203 if (info->executable)
2205 s = bfd_get_section_by_name (dynobj, ".interp");
2206 BFD_ASSERT (s != NULL);
2207 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2208 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2212 /* Set up .got offsets for local syms, and space for local dynamic
2213 relocs. */
2214 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2216 bfd_signed_vma *local_got;
2217 bfd_signed_vma *end_local_got;
2218 bfd_size_type locsymcount;
2219 Elf_Internal_Shdr *symtab_hdr;
2220 asection *srel;
2222 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2223 continue;
2225 for (s = ibfd->sections; s != NULL; s = s->next)
2227 struct elf_m32r_dyn_relocs *p;
2229 for (p = ((struct elf_m32r_dyn_relocs *)
2230 elf_section_data (s)->local_dynrel);
2231 p != NULL;
2232 p = p->next)
2234 if (! bfd_is_abs_section (p->sec)
2235 && bfd_is_abs_section (p->sec->output_section))
2237 /* Input section has been discarded, either because
2238 it is a copy of a linkonce section or due to
2239 linker script /DISCARD/, so we'll be discarding
2240 the relocs too. */
2242 else if (p->count != 0)
2244 srel = elf_section_data (p->sec)->sreloc;
2245 srel->size += p->count * sizeof (Elf32_External_Rela);
2246 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2247 info->flags |= DF_TEXTREL;
2252 local_got = elf_local_got_refcounts (ibfd);
2253 if (!local_got)
2254 continue;
2256 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2257 locsymcount = symtab_hdr->sh_info;
2258 end_local_got = local_got + locsymcount;
2259 s = htab->sgot;
2260 srel = htab->srelgot;
2261 for (; local_got < end_local_got; ++local_got)
2263 if (*local_got > 0)
2265 *local_got = s->size;
2266 s->size += 4;
2267 if (info->shared)
2268 srel->size += sizeof (Elf32_External_Rela);
2270 else
2271 *local_got = (bfd_vma) -1;
2275 /* Allocate global sym .plt and .got entries, and space for global
2276 sym dynamic relocs. */
2277 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2279 /* We now have determined the sizes of the various dynamic sections.
2280 Allocate memory for them. */
2281 relocs = FALSE;
2282 for (s = dynobj->sections; s != NULL; s = s->next)
2284 if ((s->flags & SEC_LINKER_CREATED) == 0)
2285 continue;
2287 if (s == htab->splt
2288 || s == htab->sgot
2289 || s == htab->sgotplt
2290 || s == htab->sdynbss)
2292 /* Strip this section if we don't need it; see the
2293 comment below. */
2295 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2297 if (s->size != 0 && s != htab->srelplt)
2298 relocs = TRUE;
2300 /* We use the reloc_count field as a counter if we need
2301 to copy relocs into the output file. */
2302 s->reloc_count = 0;
2304 else
2305 /* It's not one of our sections, so don't allocate space. */
2306 continue;
2308 if (s->size == 0)
2310 /* If we don't need this section, strip it from the
2311 output file. This is mostly to handle .rela.bss and
2312 .rela.plt. We must create both sections in
2313 create_dynamic_sections, because they must be created
2314 before the linker maps input sections to output
2315 sections. The linker does that before
2316 adjust_dynamic_symbol is called, and it is that
2317 function which decides whether anything needs to go
2318 into these sections. */
2319 s->flags |= SEC_EXCLUDE;
2320 continue;
2323 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2324 continue;
2326 /* Allocate memory for the section contents. We use bfd_zalloc
2327 here in case unused entries are not reclaimed before the
2328 section's contents are written out. This should not happen,
2329 but this way if it does, we get a R_M32R_NONE reloc instead
2330 of garbage. */
2331 s->contents = bfd_zalloc (dynobj, s->size);
2332 if (s->contents == NULL)
2333 return FALSE;
2336 if (htab->root.dynamic_sections_created)
2338 /* Add some entries to the .dynamic section. We fill in the
2339 values later, in m32r_elf_finish_dynamic_sections, but we
2340 must add the entries now so that we get the correct size for
2341 the .dynamic section. The DT_DEBUG entry is filled in by the
2342 dynamic linker and used by the debugger. */
2343 #define add_dynamic_entry(TAG, VAL) \
2344 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2346 if (info->executable)
2348 if (! add_dynamic_entry (DT_DEBUG, 0))
2349 return FALSE;
2352 if (htab->splt->size != 0)
2354 if (! add_dynamic_entry (DT_PLTGOT, 0)
2355 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2356 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2357 || ! add_dynamic_entry (DT_JMPREL, 0))
2358 return FALSE;
2361 if (relocs)
2363 if (! add_dynamic_entry (DT_RELA, 0)
2364 || ! add_dynamic_entry (DT_RELASZ, 0)
2365 || ! add_dynamic_entry (DT_RELAENT,
2366 sizeof (Elf32_External_Rela)))
2367 return FALSE;
2369 /* If any dynamic relocs apply to a read-only section,
2370 then we need a DT_TEXTREL entry. */
2371 if ((info->flags & DF_TEXTREL) == 0)
2372 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2373 info);
2375 if ((info->flags & DF_TEXTREL) != 0)
2377 if (! add_dynamic_entry (DT_TEXTREL, 0))
2378 return FALSE;
2382 #undef add_dynamic_entry
2384 return TRUE;
2387 /* Relocate an M32R/D ELF section.
2388 There is some attempt to make this function usable for many architectures,
2389 both for RELA and REL type relocs, if only to serve as a learning tool.
2391 The RELOCATE_SECTION function is called by the new ELF backend linker
2392 to handle the relocations for a section.
2394 The relocs are always passed as Rela structures; if the section
2395 actually uses Rel structures, the r_addend field will always be
2396 zero.
2398 This function is responsible for adjust the section contents as
2399 necessary, and (if using Rela relocs and generating a
2400 relocatable output file) adjusting the reloc addend as
2401 necessary.
2403 This function does not have to worry about setting the reloc
2404 address or the reloc symbol index.
2406 LOCAL_SYMS is a pointer to the swapped in local symbols.
2408 LOCAL_SECTIONS is an array giving the section in the input file
2409 corresponding to the st_shndx field of each local symbol.
2411 The global hash table entry for the global symbols can be found
2412 via elf_sym_hashes (input_bfd).
2414 When generating relocatable output, this function must handle
2415 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2416 going to be the section symbol corresponding to the output
2417 section, which means that the addend must be adjusted
2418 accordingly. */
2420 static bfd_boolean
2421 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2422 struct bfd_link_info *info,
2423 bfd *input_bfd,
2424 asection *input_section,
2425 bfd_byte *contents,
2426 Elf_Internal_Rela *relocs,
2427 Elf_Internal_Sym *local_syms,
2428 asection **local_sections)
2430 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2431 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2432 Elf_Internal_Rela *rel, *relend;
2433 /* Assume success. */
2434 bfd_boolean ret = TRUE;
2436 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2437 bfd *dynobj;
2438 bfd_vma *local_got_offsets;
2439 asection *sgot, *splt, *sreloc;
2440 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2442 dynobj = htab->root.dynobj;
2443 local_got_offsets = elf_local_got_offsets (input_bfd);
2445 sgot = htab->sgot;
2446 splt = htab->splt;
2447 sreloc = NULL;
2449 rel = relocs;
2450 relend = relocs + input_section->reloc_count;
2451 for (; rel < relend; rel++)
2453 int r_type;
2454 reloc_howto_type *howto;
2455 unsigned long r_symndx;
2456 struct elf_link_hash_entry *h;
2457 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2458 ensure it's zero (we use REL relocs, not RELA). Therefore this
2459 should be assigning zero to `addend', but for clarity we use
2460 `r_addend'. */
2461 bfd_vma addend = rel->r_addend;
2462 bfd_vma offset = rel->r_offset;
2463 Elf_Internal_Sym *sym;
2464 asection *sec;
2465 const char *sym_name;
2466 bfd_reloc_status_type r;
2467 const char *errmsg = NULL;
2468 bfd_boolean use_rel = FALSE;
2470 h = NULL;
2471 r_type = ELF32_R_TYPE (rel->r_info);
2472 if (r_type < 0 || r_type >= (int) R_M32R_max)
2474 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2475 input_bfd,
2476 (int) r_type);
2477 bfd_set_error (bfd_error_bad_value);
2478 ret = FALSE;
2479 continue;
2482 if ( r_type == R_M32R_GNU_VTENTRY
2483 || r_type == R_M32R_GNU_VTINHERIT
2484 || r_type == R_M32R_NONE
2485 || r_type == R_M32R_RELA_GNU_VTENTRY
2486 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2487 continue;
2489 if (r_type <= R_M32R_GNU_VTENTRY)
2490 use_rel = TRUE;
2492 howto = m32r_elf_howto_table + r_type;
2493 r_symndx = ELF32_R_SYM (rel->r_info);
2495 if (info->relocatable && use_rel)
2497 /* This is a relocatable link. We don't have to change
2498 anything, unless the reloc is against a section symbol,
2499 in which case we have to adjust according to where the
2500 section symbol winds up in the output section. */
2501 sec = NULL;
2502 if (r_symndx >= symtab_hdr->sh_info)
2503 /* External symbol. */
2504 continue;
2506 /* Local symbol. */
2507 sym = local_syms + r_symndx;
2508 sym_name = "<local symbol>";
2509 /* STT_SECTION: symbol is associated with a section. */
2510 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2511 /* Symbol isn't associated with a section. Nothing to do. */
2512 continue;
2514 sec = local_sections[r_symndx];
2515 addend += sec->output_offset + sym->st_value;
2517 /* If partial_inplace, we need to store any additional addend
2518 back in the section. */
2519 if (! howto->partial_inplace)
2520 continue;
2521 /* ??? Here is a nice place to call a special_function
2522 like handler. */
2523 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2524 r = _bfd_relocate_contents (howto, input_bfd,
2525 addend, contents + offset);
2526 else
2528 Elf_Internal_Rela *lorel;
2530 /* We allow an arbitrary number of HI16 relocs before the
2531 LO16 reloc. This permits gcc to emit the HI and LO relocs
2532 itself. */
2533 for (lorel = rel + 1;
2534 (lorel < relend
2535 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2536 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2537 lorel++)
2538 continue;
2539 if (lorel < relend
2540 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2542 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2543 contents, addend);
2544 r = bfd_reloc_ok;
2546 else
2547 r = _bfd_relocate_contents (howto, input_bfd,
2548 addend, contents + offset);
2551 else
2553 bfd_vma relocation;
2555 /* This is a final link. */
2556 sym = NULL;
2557 sec = NULL;
2558 h = NULL;
2560 if (r_symndx < symtab_hdr->sh_info)
2562 /* Local symbol. */
2563 sym = local_syms + r_symndx;
2564 sec = local_sections[r_symndx];
2565 sym_name = "<local symbol>";
2567 if (!use_rel)
2569 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2570 addend = rel->r_addend;
2572 if (info->relocatable)
2574 /* This is a relocatable link. We don't have to change
2575 anything, unless the reloc is against a section symbol,
2576 in which case we have to adjust according to where the
2577 section symbol winds up in the output section. */
2578 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2579 rel->r_addend += sec->output_offset + sym->st_value;
2581 continue;
2584 else
2586 relocation = (sec->output_section->vma
2587 + sec->output_offset
2588 + sym->st_value);
2591 else
2593 /* External symbol. */
2594 if (info->relocatable && !use_rel)
2595 continue;
2597 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2598 while (h->root.type == bfd_link_hash_indirect
2599 || h->root.type == bfd_link_hash_warning)
2600 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2601 sym_name = h->root.root.string;
2603 if (h->root.type == bfd_link_hash_defined
2604 || h->root.type == bfd_link_hash_defweak)
2606 bfd_boolean dyn;
2607 sec = h->root.u.def.section;
2609 dyn = htab->root.dynamic_sections_created;
2610 sec = h->root.u.def.section;
2611 if (r_type == R_M32R_GOTPC24
2612 || (r_type == R_M32R_GOTPC_HI_ULO
2613 || r_type == R_M32R_GOTPC_HI_SLO
2614 || r_type == R_M32R_GOTPC_LO)
2615 || (r_type == R_M32R_26_PLTREL
2616 && h->plt.offset != (bfd_vma) -1)
2617 || ((r_type == R_M32R_GOT24
2618 || r_type == R_M32R_GOT16_HI_ULO
2619 || r_type == R_M32R_GOT16_HI_SLO
2620 || r_type == R_M32R_GOT16_LO)
2621 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2622 info->shared, h)
2623 && (! info->shared
2624 || (! info->symbolic && h->dynindx != -1)
2625 || !h->def_regular))
2626 || (info->shared
2627 && ((! info->symbolic && h->dynindx != -1)
2628 || !h->def_regular)
2629 && (((r_type == R_M32R_16_RELA
2630 || r_type == R_M32R_32_RELA
2631 || r_type == R_M32R_24_RELA
2632 || r_type == R_M32R_HI16_ULO_RELA
2633 || r_type == R_M32R_HI16_SLO_RELA
2634 || r_type == R_M32R_LO16_RELA)
2635 && !h->forced_local)
2636 || r_type == R_M32R_REL32
2637 || r_type == R_M32R_10_PCREL_RELA
2638 || r_type == R_M32R_18_PCREL_RELA
2639 || r_type == R_M32R_26_PCREL_RELA)
2640 && ((input_section->flags & SEC_ALLOC) != 0
2641 /* DWARF will emit R_M32R_16(24,32) relocations
2642 in its sections against symbols defined
2643 externally in shared libraries. We can't do
2644 anything with them here. */
2645 || ((input_section->flags & SEC_DEBUGGING) != 0
2646 && h->def_dynamic))))
2648 /* In these cases, we don't need the relocation
2649 value. We check specially because in some
2650 obscure cases sec->output_section will be NULL. */
2651 relocation = 0;
2653 else if (sec->output_section == NULL)
2655 (*_bfd_error_handler)
2656 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2657 input_bfd,
2658 input_section,
2659 (long) rel->r_offset,
2660 howto->name,
2661 h->root.root.string);
2663 relocation = 0;
2665 else
2666 relocation = (h->root.u.def.value
2667 + sec->output_section->vma
2668 + sec->output_offset);
2670 else if (h->root.type == bfd_link_hash_undefweak)
2671 relocation = 0;
2672 else if (info->unresolved_syms_in_objects == RM_IGNORE
2673 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2674 relocation = 0;
2675 else
2677 if (! ((*info->callbacks->undefined_symbol)
2678 (info, h->root.root.string, input_bfd,
2679 input_section, offset,
2680 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2681 || ELF_ST_VISIBILITY (h->other)))))
2682 return FALSE;
2683 relocation = 0;
2687 /* Sanity check the address. */
2688 if (offset > high_address)
2690 r = bfd_reloc_outofrange;
2691 goto check_reloc;
2694 switch ((int) r_type)
2696 case R_M32R_GOTOFF:
2697 /* Relocation is relative to the start of the global offset
2698 table (for ld24 rx, #uimm24). eg access at label+addend
2700 ld24 rx. #label@GOTOFF + addend
2701 sub rx, r12. */
2703 BFD_ASSERT (sgot != NULL);
2705 relocation = -(relocation - sgot->output_section->vma);
2706 rel->r_addend = -rel->r_addend;
2707 break;
2709 case R_M32R_GOTOFF_HI_ULO:
2710 case R_M32R_GOTOFF_HI_SLO:
2711 case R_M32R_GOTOFF_LO:
2712 BFD_ASSERT (sgot != NULL);
2714 relocation -= sgot->output_section->vma;
2716 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2717 && ((relocation + rel->r_addend) & 0x8000))
2718 rel->r_addend += 0x10000;
2719 break;
2721 case R_M32R_GOTPC24:
2722 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2723 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2725 relocation = sgot->output_section->vma;
2726 break;
2728 case R_M32R_GOTPC_HI_ULO:
2729 case R_M32R_GOTPC_HI_SLO:
2730 case R_M32R_GOTPC_LO:
2732 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2733 bl .+4
2734 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2735 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2737 bl .+4
2738 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2739 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2741 relocation = sgot->output_section->vma;
2742 relocation -= (input_section->output_section->vma
2743 + input_section->output_offset
2744 + rel->r_offset);
2745 if ((r_type == R_M32R_GOTPC_HI_SLO)
2746 && ((relocation + rel->r_addend) & 0x8000))
2747 rel->r_addend += 0x10000;
2749 break;
2751 case R_M32R_GOT16_HI_ULO:
2752 case R_M32R_GOT16_HI_SLO:
2753 case R_M32R_GOT16_LO:
2754 /* Fall through. */
2755 case R_M32R_GOT24:
2756 /* Relocation is to the entry for this symbol in the global
2757 offset table. */
2758 BFD_ASSERT (sgot != NULL);
2760 if (h != NULL)
2762 bfd_boolean dyn;
2763 bfd_vma off;
2765 off = h->got.offset;
2766 BFD_ASSERT (off != (bfd_vma) -1);
2768 dyn = htab->root.dynamic_sections_created;
2769 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2770 || (info->shared
2771 && (info->symbolic
2772 || h->dynindx == -1
2773 || h->forced_local)
2774 && h->def_regular))
2776 /* This is actually a static link, or it is a
2777 -Bsymbolic link and the symbol is defined
2778 locally, or the symbol was forced to be local
2779 because of a version file. We must initialize
2780 this entry in the global offset table. Since the
2781 offset must always be a multiple of 4, we use the
2782 least significant bit to record whether we have
2783 initialized it already.
2785 When doing a dynamic link, we create a .rela.got
2786 relocation entry to initialize the value. This
2787 is done in the finish_dynamic_symbol routine. */
2788 if ((off & 1) != 0)
2789 off &= ~1;
2790 else
2792 bfd_put_32 (output_bfd, relocation,
2793 sgot->contents + off);
2794 h->got.offset |= 1;
2798 relocation = sgot->output_offset + off;
2800 else
2802 bfd_vma off;
2803 bfd_byte *loc;
2805 BFD_ASSERT (local_got_offsets != NULL
2806 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2808 off = local_got_offsets[r_symndx];
2810 /* The offset must always be a multiple of 4. We use
2811 the least significant bit to record whether we have
2812 already processed this entry. */
2813 if ((off & 1) != 0)
2814 off &= ~1;
2815 else
2817 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2819 if (info->shared)
2821 asection *srelgot;
2822 Elf_Internal_Rela outrel;
2824 /* We need to generate a R_M32R_RELATIVE reloc
2825 for the dynamic linker. */
2826 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2827 BFD_ASSERT (srelgot != NULL);
2829 outrel.r_offset = (sgot->output_section->vma
2830 + sgot->output_offset
2831 + off);
2832 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2833 outrel.r_addend = relocation;
2834 loc = srelgot->contents;
2835 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2836 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2837 ++srelgot->reloc_count;
2840 local_got_offsets[r_symndx] |= 1;
2843 relocation = sgot->output_offset + off;
2845 if ((r_type == R_M32R_GOT16_HI_SLO)
2846 && ((relocation + rel->r_addend) & 0x8000))
2847 rel->r_addend += 0x10000;
2849 break;
2851 case R_M32R_26_PLTREL:
2852 /* Relocation is to the entry for this symbol in the
2853 procedure linkage table. */
2855 /* The native assembler will generate a 26_PLTREL reloc
2856 for a local symbol if you assemble a call from one
2857 section to another when using -K pic. */
2858 if (h == NULL)
2859 break;
2861 if (h->forced_local)
2862 break;
2864 if (h->plt.offset == (bfd_vma) -1)
2865 /* We didn't make a PLT entry for this symbol. This
2866 happens when statically linking PIC code, or when
2867 using -Bsymbolic. */
2868 break;
2870 relocation = (splt->output_section->vma
2871 + splt->output_offset
2872 + h->plt.offset);
2873 break;
2875 case R_M32R_HI16_SLO_RELA:
2876 if ((relocation + rel->r_addend) & 0x8000)
2877 rel->r_addend += 0x10000;
2878 /* Fall through. */
2880 case R_M32R_16_RELA:
2881 case R_M32R_24_RELA:
2882 case R_M32R_32_RELA:
2883 case R_M32R_REL32:
2884 case R_M32R_18_PCREL_RELA:
2885 case R_M32R_26_PCREL_RELA:
2886 case R_M32R_HI16_ULO_RELA:
2887 case R_M32R_LO16_RELA:
2888 if (info->shared
2889 && r_symndx != 0
2890 && (input_section->flags & SEC_ALLOC) != 0
2891 && ((r_type != R_M32R_18_PCREL_RELA
2892 && r_type != R_M32R_26_PCREL_RELA
2893 && r_type != R_M32R_REL32)
2894 || (h != NULL
2895 && h->dynindx != -1
2896 && (! info->symbolic
2897 || !h->def_regular))))
2899 Elf_Internal_Rela outrel;
2900 bfd_boolean skip, relocate;
2901 bfd_byte *loc;
2903 /* When generating a shared object, these relocations
2904 are copied into the output file to be resolved at run
2905 time. */
2906 if (sreloc == NULL)
2908 const char *name;
2910 name = (bfd_elf_string_from_elf_section
2911 (input_bfd,
2912 elf_elfheader (input_bfd)->e_shstrndx,
2913 elf_section_data (input_section)->rel_hdr.sh_name));
2914 if (name == NULL)
2915 return FALSE;
2917 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2918 && strcmp (bfd_get_section_name (input_bfd,
2919 input_section),
2920 name + 5) == 0);
2922 sreloc = bfd_get_section_by_name (dynobj, name);
2923 BFD_ASSERT (sreloc != NULL);
2926 skip = FALSE;
2927 relocate = FALSE;
2929 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2930 info,
2931 input_section,
2932 rel->r_offset);
2933 if (outrel.r_offset == (bfd_vma) -1)
2934 skip = TRUE;
2935 else if (outrel.r_offset == (bfd_vma) -2)
2936 skip = relocate = TRUE;
2937 outrel.r_offset += (input_section->output_section->vma
2938 + input_section->output_offset);
2940 if (skip)
2941 memset (&outrel, 0, sizeof outrel);
2942 else if (r_type == R_M32R_18_PCREL_RELA
2943 || r_type == R_M32R_26_PCREL_RELA
2944 || r_type == R_M32R_REL32)
2946 BFD_ASSERT (h != NULL && h->dynindx != -1);
2947 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2948 outrel.r_addend = rel->r_addend;
2950 else
2952 /* h->dynindx may be -1 if this symbol was marked to
2953 become local. */
2954 if (h == NULL
2955 || ((info->symbolic || h->dynindx == -1)
2956 && h->def_regular))
2958 relocate = TRUE;
2959 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2960 outrel.r_addend = relocation + rel->r_addend;
2962 else
2964 BFD_ASSERT (h->dynindx != -1);
2965 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2966 outrel.r_addend = relocation + rel->r_addend;
2970 loc = sreloc->contents;
2971 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2972 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2973 ++sreloc->reloc_count;
2975 /* If this reloc is against an external symbol, we do
2976 not want to fiddle with the addend. Otherwise, we
2977 need to include the symbol value so that it becomes
2978 an addend for the dynamic reloc. */
2979 if (! relocate)
2980 continue;
2982 break;
2984 case (int) R_M32R_10_PCREL :
2985 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2986 contents, offset,
2987 sec, relocation, addend);
2988 goto check_reloc;
2990 case (int) R_M32R_HI16_SLO :
2991 case (int) R_M32R_HI16_ULO :
2993 Elf_Internal_Rela *lorel;
2995 /* We allow an arbitrary number of HI16 relocs before the
2996 LO16 reloc. This permits gcc to emit the HI and LO relocs
2997 itself. */
2998 for (lorel = rel + 1;
2999 (lorel < relend
3000 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
3001 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3002 lorel++)
3003 continue;
3004 if (lorel < relend
3005 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3007 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3008 contents, relocation + addend);
3009 r = bfd_reloc_ok;
3011 else
3012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3013 contents, offset,
3014 relocation, addend);
3017 goto check_reloc;
3019 case (int) R_M32R_SDA16_RELA:
3020 case (int) R_M32R_SDA16 :
3022 const char *name;
3024 BFD_ASSERT (sec != NULL);
3025 name = bfd_get_section_name (abfd, sec);
3027 if ( strcmp (name, ".sdata") == 0
3028 || strcmp (name, ".sbss") == 0
3029 || strcmp (name, ".scommon") == 0)
3031 bfd_vma sda_base;
3032 bfd *out_bfd = sec->output_section->owner;
3034 r = m32r_elf_final_sda_base (out_bfd, info,
3035 &errmsg,
3036 &sda_base);
3037 if (r != bfd_reloc_ok)
3039 ret = FALSE;
3040 goto check_reloc;
3043 /* At this point `relocation' contains the object's
3044 address. */
3045 relocation -= sda_base;
3046 /* Now it contains the offset from _SDA_BASE_. */
3048 else
3050 (*_bfd_error_handler)
3051 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3052 input_bfd,
3053 sec,
3054 sym_name,
3055 m32r_elf_howto_table[(int) r_type].name);
3056 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3057 ret = FALSE;
3058 continue;
3061 /* Fall through. */
3063 default : /* OLD_M32R_RELOC */
3065 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3066 contents, offset,
3067 relocation, addend);
3068 goto check_reloc;
3071 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3072 contents, rel->r_offset,
3073 relocation, rel->r_addend);
3077 check_reloc:
3079 if (r != bfd_reloc_ok)
3081 /* FIXME: This should be generic enough to go in a utility. */
3082 const char *name;
3084 if (h != NULL)
3085 name = h->root.root.string;
3086 else
3088 name = (bfd_elf_string_from_elf_section
3089 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3090 if (name == NULL || *name == '\0')
3091 name = bfd_section_name (input_bfd, sec);
3094 if (errmsg != NULL)
3095 goto common_error;
3097 switch (r)
3099 case bfd_reloc_overflow:
3100 if (! ((*info->callbacks->reloc_overflow)
3101 (info, (h ? &h->root : NULL), name, howto->name,
3102 (bfd_vma) 0, input_bfd, input_section, offset)))
3103 return FALSE;
3104 break;
3106 case bfd_reloc_undefined:
3107 if (! ((*info->callbacks->undefined_symbol)
3108 (info, name, input_bfd, input_section,
3109 offset, TRUE)))
3110 return FALSE;
3111 break;
3113 case bfd_reloc_outofrange:
3114 errmsg = _("internal error: out of range error");
3115 goto common_error;
3117 case bfd_reloc_notsupported:
3118 errmsg = _("internal error: unsupported relocation error");
3119 goto common_error;
3121 case bfd_reloc_dangerous:
3122 errmsg = _("internal error: dangerous error");
3123 goto common_error;
3125 default:
3126 errmsg = _("internal error: unknown error");
3127 /* fall through */
3129 common_error:
3130 if (!((*info->callbacks->warning)
3131 (info, errmsg, name, input_bfd, input_section,
3132 offset)))
3133 return FALSE;
3134 break;
3139 return ret;
3142 /* Finish up dynamic symbol handling. We set the contents of various
3143 dynamic sections here. */
3145 static bfd_boolean
3146 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3147 struct bfd_link_info *info,
3148 struct elf_link_hash_entry *h,
3149 Elf_Internal_Sym *sym)
3151 struct elf_m32r_link_hash_table *htab;
3152 bfd *dynobj;
3153 bfd_byte *loc;
3155 #ifdef DEBUG_PIC
3156 printf ("m32r_elf_finish_dynamic_symbol()\n");
3157 #endif
3159 htab = m32r_elf_hash_table (info);
3160 dynobj = htab->root.dynobj;
3162 if (h->plt.offset != (bfd_vma) -1)
3164 asection *splt;
3165 asection *sgot;
3166 asection *srela;
3168 bfd_vma plt_index;
3169 bfd_vma got_offset;
3170 Elf_Internal_Rela rela;
3172 /* This symbol has an entry in the procedure linkage table. Set
3173 it up. */
3175 BFD_ASSERT (h->dynindx != -1);
3177 splt = htab->splt;
3178 sgot = htab->sgotplt;
3179 srela = htab->srelplt;
3180 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3182 /* Get the index in the procedure linkage table which
3183 corresponds to this symbol. This is the index of this symbol
3184 in all the symbols for which we are making plt entries. The
3185 first entry in the procedure linkage table is reserved. */
3186 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3188 /* Get the offset into the .got table of the entry that
3189 corresponds to this function. Each .got entry is 4 bytes.
3190 The first three are reserved. */
3191 got_offset = (plt_index + 3) * 4;
3193 /* Fill in the entry in the procedure linkage table. */
3194 if (! info->shared)
3196 bfd_put_32 (output_bfd,
3197 (PLT_ENTRY_WORD0b
3198 + (((sgot->output_section->vma
3199 + sgot->output_offset
3200 + got_offset) >> 16) & 0xffff)),
3201 splt->contents + h->plt.offset);
3202 bfd_put_32 (output_bfd,
3203 (PLT_ENTRY_WORD1b
3204 + ((sgot->output_section->vma
3205 + sgot->output_offset
3206 + got_offset) & 0xffff)),
3207 splt->contents + h->plt.offset + 4);
3208 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3209 splt->contents + h->plt.offset + 8);
3210 bfd_put_32 (output_bfd,
3211 (PLT_ENTRY_WORD3
3212 + plt_index * sizeof (Elf32_External_Rela)),
3213 splt->contents + h->plt.offset + 12);
3214 bfd_put_32 (output_bfd,
3215 (PLT_ENTRY_WORD4
3216 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3217 splt->contents + h->plt.offset + 16);
3219 else
3221 bfd_put_32 (output_bfd,
3222 PLT_ENTRY_WORD0 + got_offset,
3223 splt->contents + h->plt.offset);
3224 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3225 splt->contents + h->plt.offset + 4);
3226 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3227 splt->contents + h->plt.offset + 8);
3228 bfd_put_32 (output_bfd,
3229 (PLT_ENTRY_WORD3
3230 + plt_index * sizeof (Elf32_External_Rela)),
3231 splt->contents + h->plt.offset + 12);
3232 bfd_put_32 (output_bfd,
3233 (PLT_ENTRY_WORD4
3234 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3235 splt->contents + h->plt.offset + 16);
3238 /* Fill in the entry in the global offset table. */
3239 bfd_put_32 (output_bfd,
3240 (splt->output_section->vma
3241 + splt->output_offset
3242 + h->plt.offset
3243 + 12), /* same offset */
3244 sgot->contents + got_offset);
3246 /* Fill in the entry in the .rela.plt section. */
3247 rela.r_offset = (sgot->output_section->vma
3248 + sgot->output_offset
3249 + got_offset);
3250 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3251 rela.r_addend = 0;
3252 loc = srela->contents;
3253 loc += plt_index * sizeof (Elf32_External_Rela);
3254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3256 if (!h->def_regular)
3258 /* Mark the symbol as undefined, rather than as defined in
3259 the .plt section. Leave the value alone. */
3260 sym->st_shndx = SHN_UNDEF;
3264 if (h->got.offset != (bfd_vma) -1)
3266 asection *sgot;
3267 asection *srela;
3268 Elf_Internal_Rela rela;
3270 /* This symbol has an entry in the global offset table. Set it
3271 up. */
3273 sgot = htab->sgot;
3274 srela = htab->srelgot;
3275 BFD_ASSERT (sgot != NULL && srela != NULL);
3277 rela.r_offset = (sgot->output_section->vma
3278 + sgot->output_offset
3279 + (h->got.offset &~ 1));
3281 /* If this is a -Bsymbolic link, and the symbol is defined
3282 locally, we just want to emit a RELATIVE reloc. Likewise if
3283 the symbol was forced to be local because of a version file.
3284 The entry in the global offset table will already have been
3285 initialized in the relocate_section function. */
3286 if (info->shared
3287 && (info->symbolic
3288 || h->dynindx == -1
3289 || h->forced_local)
3290 && h->def_regular)
3292 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3293 rela.r_addend = (h->root.u.def.value
3294 + h->root.u.def.section->output_section->vma
3295 + h->root.u.def.section->output_offset);
3297 else
3299 BFD_ASSERT ((h->got.offset & 1) == 0);
3300 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3301 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3302 rela.r_addend = 0;
3305 loc = srela->contents;
3306 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3307 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3308 ++srela->reloc_count;
3311 if (h->needs_copy)
3313 asection *s;
3314 Elf_Internal_Rela rela;
3316 /* This symbols needs a copy reloc. Set it up. */
3318 BFD_ASSERT (h->dynindx != -1
3319 && (h->root.type == bfd_link_hash_defined
3320 || h->root.type == bfd_link_hash_defweak));
3322 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3323 ".rela.bss");
3324 BFD_ASSERT (s != NULL);
3326 rela.r_offset = (h->root.u.def.value
3327 + h->root.u.def.section->output_section->vma
3328 + h->root.u.def.section->output_offset);
3329 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3330 rela.r_addend = 0;
3331 loc = s->contents;
3332 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3333 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3334 ++s->reloc_count;
3337 /* Mark some specially defined symbols as absolute. */
3338 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3339 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3340 sym->st_shndx = SHN_ABS;
3342 return TRUE;
3346 /* Finish up the dynamic sections. */
3348 static bfd_boolean
3349 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3350 struct bfd_link_info *info)
3352 struct elf_m32r_link_hash_table *htab;
3353 bfd *dynobj;
3354 asection *sdyn;
3355 asection *sgot;
3357 #ifdef DEBUG_PIC
3358 printf ("m32r_elf_finish_dynamic_sections()\n");
3359 #endif
3361 htab = m32r_elf_hash_table (info);
3362 dynobj = htab->root.dynobj;
3364 sgot = htab->sgotplt;
3365 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3367 if (htab->root.dynamic_sections_created)
3369 asection *splt;
3370 Elf32_External_Dyn *dyncon, *dynconend;
3372 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3374 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3375 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3377 for (; dyncon < dynconend; dyncon++)
3379 Elf_Internal_Dyn dyn;
3380 const char *name;
3381 asection *s;
3383 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3385 switch (dyn.d_tag)
3387 default:
3388 break;
3390 case DT_PLTGOT:
3391 name = ".got";
3392 s = htab->sgot->output_section;
3393 goto get_vma;
3394 case DT_JMPREL:
3395 name = ".rela.plt";
3396 s = htab->srelplt->output_section;
3397 get_vma:
3398 BFD_ASSERT (s != NULL);
3399 dyn.d_un.d_ptr = s->vma;
3400 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3401 break;
3403 case DT_PLTRELSZ:
3404 s = htab->srelplt->output_section;
3405 BFD_ASSERT (s != NULL);
3406 dyn.d_un.d_val = s->size;
3407 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3408 break;
3410 case DT_RELASZ:
3411 /* My reading of the SVR4 ABI indicates that the
3412 procedure linkage table relocs (DT_JMPREL) should be
3413 included in the overall relocs (DT_RELA). This is
3414 what Solaris does. However, UnixWare can not handle
3415 that case. Therefore, we override the DT_RELASZ entry
3416 here to make it not include the JMPREL relocs. Since
3417 the linker script arranges for .rela.plt to follow all
3418 other relocation sections, we don't have to worry
3419 about changing the DT_RELA entry. */
3420 if (htab->srelplt != NULL)
3422 s = htab->srelplt->output_section;
3423 dyn.d_un.d_val -= s->size;
3425 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3426 break;
3430 /* Fill in the first entry in the procedure linkage table. */
3431 splt = htab->splt;
3432 if (splt && splt->size > 0)
3434 if (info->shared)
3436 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3437 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3438 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3439 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3440 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3442 else
3444 unsigned long addr;
3445 /* addr = .got + 4 */
3446 addr = sgot->output_section->vma + sgot->output_offset + 4;
3447 bfd_put_32 (output_bfd,
3448 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3449 splt->contents);
3450 bfd_put_32 (output_bfd,
3451 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3452 splt->contents + 4);
3453 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3454 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3455 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3458 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3459 PLT_ENTRY_SIZE;
3463 /* Fill in the first three entries in the global offset table. */
3464 if (sgot && sgot->size > 0)
3466 if (sdyn == NULL)
3467 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3468 else
3469 bfd_put_32 (output_bfd,
3470 sdyn->output_section->vma + sdyn->output_offset,
3471 sgot->contents);
3472 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3473 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3475 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3478 return TRUE;
3482 /* Set the right machine number. */
3484 static bfd_boolean
3485 m32r_elf_object_p (bfd *abfd)
3487 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3489 default:
3490 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3491 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3492 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3494 return TRUE;
3497 /* Store the machine number in the flags field. */
3499 static void
3500 m32r_elf_final_write_processing (bfd *abfd,
3501 bfd_boolean linker ATTRIBUTE_UNUSED)
3503 unsigned long val;
3505 switch (bfd_get_mach (abfd))
3507 default:
3508 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3509 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3510 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3513 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3514 elf_elfheader (abfd)->e_flags |= val;
3517 /* Function to keep M32R specific file flags. */
3519 static bfd_boolean
3520 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3522 BFD_ASSERT (!elf_flags_init (abfd)
3523 || elf_elfheader (abfd)->e_flags == flags);
3525 elf_elfheader (abfd)->e_flags = flags;
3526 elf_flags_init (abfd) = TRUE;
3527 return TRUE;
3530 /* Merge backend specific data from an object file to the output
3531 object file when linking. */
3533 static bfd_boolean
3534 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3536 flagword out_flags;
3537 flagword in_flags;
3539 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3540 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3541 return TRUE;
3543 in_flags = elf_elfheader (ibfd)->e_flags;
3544 out_flags = elf_elfheader (obfd)->e_flags;
3546 if (! elf_flags_init (obfd))
3548 /* If the input is the default architecture then do not
3549 bother setting the flags for the output architecture,
3550 instead allow future merges to do this. If no future
3551 merges ever set these flags then they will retain their
3552 unitialised values, which surprise surprise, correspond
3553 to the default values. */
3554 if (bfd_get_arch_info (ibfd)->the_default)
3555 return TRUE;
3557 elf_flags_init (obfd) = TRUE;
3558 elf_elfheader (obfd)->e_flags = in_flags;
3560 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3561 && bfd_get_arch_info (obfd)->the_default)
3562 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3563 bfd_get_mach (ibfd));
3565 return TRUE;
3568 /* Check flag compatibility. */
3569 if (in_flags == out_flags)
3570 return TRUE;
3572 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3574 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3575 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3576 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3578 (*_bfd_error_handler)
3579 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3581 bfd_set_error (bfd_error_bad_value);
3582 return FALSE;
3586 return TRUE;
3589 /* Display the flags field. */
3591 static bfd_boolean
3592 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3594 FILE * file = (FILE *) ptr;
3596 BFD_ASSERT (abfd != NULL && ptr != NULL);
3598 _bfd_elf_print_private_bfd_data (abfd, ptr);
3600 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3602 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3604 default:
3605 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3606 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3607 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3610 fputc ('\n', file);
3612 return TRUE;
3615 static asection *
3616 m32r_elf_gc_mark_hook (asection *sec,
3617 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3618 Elf_Internal_Rela *rel,
3619 struct elf_link_hash_entry *h,
3620 Elf_Internal_Sym *sym)
3622 if (h != NULL)
3624 switch (ELF32_R_TYPE (rel->r_info))
3626 case R_M32R_GNU_VTINHERIT:
3627 case R_M32R_GNU_VTENTRY:
3628 case R_M32R_RELA_GNU_VTINHERIT:
3629 case R_M32R_RELA_GNU_VTENTRY:
3630 break;
3632 default:
3633 switch (h->root.type)
3635 case bfd_link_hash_defined:
3636 case bfd_link_hash_defweak:
3637 return h->root.u.def.section;
3639 case bfd_link_hash_common:
3640 return h->root.u.c.p->section;
3642 default:
3643 break;
3647 else
3648 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3650 return NULL;
3653 static bfd_boolean
3654 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3655 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3656 asection *sec ATTRIBUTE_UNUSED,
3657 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3659 /* Update the got entry reference counts for the section being removed. */
3660 Elf_Internal_Shdr *symtab_hdr;
3661 struct elf_link_hash_entry **sym_hashes;
3662 bfd_signed_vma *local_got_refcounts;
3663 const Elf_Internal_Rela *rel, *relend;
3665 elf_section_data (sec)->local_dynrel = NULL;
3667 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3668 sym_hashes = elf_sym_hashes (abfd);
3669 local_got_refcounts = elf_local_got_refcounts (abfd);
3671 relend = relocs + sec->reloc_count;
3672 for (rel = relocs; rel < relend; rel++)
3674 unsigned long r_symndx;
3675 struct elf_link_hash_entry *h = NULL;
3677 r_symndx = ELF32_R_SYM (rel->r_info);
3678 if (r_symndx >= symtab_hdr->sh_info)
3680 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3681 while (h->root.type == bfd_link_hash_indirect
3682 || h->root.type == bfd_link_hash_warning)
3683 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3686 switch (ELF32_R_TYPE (rel->r_info))
3688 case R_M32R_GOT16_HI_ULO:
3689 case R_M32R_GOT16_HI_SLO:
3690 case R_M32R_GOT16_LO:
3691 case R_M32R_GOTOFF:
3692 case R_M32R_GOTOFF_HI_ULO:
3693 case R_M32R_GOTOFF_HI_SLO:
3694 case R_M32R_GOTOFF_LO:
3695 case R_M32R_GOT24:
3696 case R_M32R_GOTPC_HI_ULO:
3697 case R_M32R_GOTPC_HI_SLO:
3698 case R_M32R_GOTPC_LO:
3699 case R_M32R_GOTPC24:
3700 if (h != NULL)
3702 if (h->got.refcount > 0)
3703 h->got.refcount--;
3705 else
3707 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3708 local_got_refcounts[r_symndx]--;
3710 break;
3712 case R_M32R_16_RELA:
3713 case R_M32R_24_RELA:
3714 case R_M32R_32_RELA:
3715 case R_M32R_REL32:
3716 case R_M32R_HI16_ULO_RELA:
3717 case R_M32R_HI16_SLO_RELA:
3718 case R_M32R_LO16_RELA:
3719 case R_M32R_SDA16_RELA:
3720 case R_M32R_18_PCREL_RELA:
3721 case R_M32R_26_PCREL_RELA:
3722 if (h != NULL)
3724 struct elf_m32r_link_hash_entry *eh;
3725 struct elf_m32r_dyn_relocs **pp;
3726 struct elf_m32r_dyn_relocs *p;
3728 if (!info->shared && h->plt.refcount > 0)
3729 h->plt.refcount -= 1;
3731 eh = (struct elf_m32r_link_hash_entry *) h;
3733 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3734 if (p->sec == sec)
3736 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3737 || ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3738 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3739 p->pc_count -= 1;
3740 p->count -= 1;
3741 if (p->count == 0)
3742 *pp = p->next;
3743 break;
3746 break;
3748 case R_M32R_26_PLTREL:
3749 if (h != NULL)
3751 if (h->plt.refcount > 0)
3752 h->plt.refcount--;
3754 break;
3756 default:
3757 break;
3761 return TRUE;
3764 /* Look through the relocs for a section during the first phase.
3765 Since we don't do .gots or .plts, we just need to consider the
3766 virtual table relocs for gc. */
3768 static bfd_boolean
3769 m32r_elf_check_relocs (bfd *abfd,
3770 struct bfd_link_info *info,
3771 asection *sec,
3772 const Elf_Internal_Rela *relocs)
3774 Elf_Internal_Shdr *symtab_hdr;
3775 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3776 const Elf_Internal_Rela *rel;
3777 const Elf_Internal_Rela *rel_end;
3778 struct elf_m32r_link_hash_table *htab;
3779 bfd *dynobj;
3780 bfd_vma *local_got_offsets;
3781 asection *sgot, *srelgot, *sreloc;
3783 if (info->relocatable)
3784 return TRUE;
3786 sgot = srelgot = sreloc = NULL;
3788 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3789 sym_hashes = elf_sym_hashes (abfd);
3790 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3791 if (!elf_bad_symtab (abfd))
3792 sym_hashes_end -= symtab_hdr->sh_info;
3794 htab = m32r_elf_hash_table (info);
3795 dynobj = htab->root.dynobj;
3796 local_got_offsets = elf_local_got_offsets (abfd);
3798 rel_end = relocs + sec->reloc_count;
3799 for (rel = relocs; rel < rel_end; rel++)
3801 int r_type;
3802 struct elf_link_hash_entry *h;
3803 unsigned long r_symndx;
3805 r_symndx = ELF32_R_SYM (rel->r_info);
3806 r_type = ELF32_R_TYPE (rel->r_info);
3807 if (r_symndx < symtab_hdr->sh_info)
3808 h = NULL;
3809 else
3811 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3812 while (h->root.type == bfd_link_hash_indirect
3813 || h->root.type == bfd_link_hash_warning)
3814 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3817 /* Some relocs require a global offset table. */
3818 if (htab->sgot == NULL)
3820 switch (r_type)
3822 case R_M32R_GOT16_HI_ULO:
3823 case R_M32R_GOT16_HI_SLO:
3824 case R_M32R_GOTOFF:
3825 case R_M32R_GOTOFF_HI_ULO:
3826 case R_M32R_GOTOFF_HI_SLO:
3827 case R_M32R_GOTOFF_LO:
3828 case R_M32R_GOT16_LO:
3829 case R_M32R_GOTPC24:
3830 case R_M32R_GOTPC_HI_ULO:
3831 case R_M32R_GOTPC_HI_SLO:
3832 case R_M32R_GOTPC_LO:
3833 case R_M32R_GOT24:
3834 if (dynobj == NULL)
3835 htab->root.dynobj = dynobj = abfd;
3836 if (! create_got_section (dynobj, info))
3837 return FALSE;
3838 break;
3840 default:
3841 break;
3845 switch (r_type)
3847 case R_M32R_GOT16_HI_ULO:
3848 case R_M32R_GOT16_HI_SLO:
3849 case R_M32R_GOT16_LO:
3850 case R_M32R_GOT24:
3852 if (h != NULL)
3853 h->got.refcount += 1;
3854 else
3856 bfd_signed_vma *local_got_refcounts;
3858 /* This is a global offset table entry for a local
3859 symbol. */
3860 local_got_refcounts = elf_local_got_refcounts (abfd);
3861 if (local_got_refcounts == NULL)
3863 bfd_size_type size;
3865 size = symtab_hdr->sh_info;
3866 size *= sizeof (bfd_signed_vma);
3867 local_got_refcounts = bfd_zalloc (abfd, size);
3868 if (local_got_refcounts == NULL)
3869 return FALSE;
3870 elf_local_got_refcounts (abfd) = local_got_refcounts;
3872 local_got_refcounts[r_symndx] += 1;
3874 break;
3876 case R_M32R_26_PLTREL:
3877 /* This symbol requires a procedure linkage table entry. We
3878 actually build the entry in adjust_dynamic_symbol,
3879 because this might be a case of linking PIC code without
3880 linking in any dynamic objects, in which case we don't
3881 need to generate a procedure linkage table after all. */
3883 /* If this is a local symbol, we resolve it directly without
3884 creating a procedure linkage table entry. */
3885 if (h == NULL)
3886 continue;
3888 if (h->forced_local)
3889 break;
3891 h->needs_plt = 1;
3892 h->plt.refcount += 1;
3893 break;
3895 case R_M32R_16_RELA:
3896 case R_M32R_24_RELA:
3897 case R_M32R_32_RELA:
3898 case R_M32R_REL32:
3899 case R_M32R_HI16_ULO_RELA:
3900 case R_M32R_HI16_SLO_RELA:
3901 case R_M32R_LO16_RELA:
3902 case R_M32R_SDA16_RELA:
3903 case R_M32R_18_PCREL_RELA:
3904 case R_M32R_26_PCREL_RELA:
3906 if (h != NULL && !info->shared)
3908 h->non_got_ref = 1;
3909 h->plt.refcount += 1;
3912 /* If we are creating a shared library, and this is a reloc
3913 against a global symbol, or a non PC relative reloc
3914 against a local symbol, then we need to copy the reloc
3915 into the shared library. However, if we are linking with
3916 -Bsymbolic, we do not need to copy a reloc against a
3917 global symbol which is defined in an object we are
3918 including in the link (i.e., DEF_REGULAR is set). At
3919 this point we have not seen all the input files, so it is
3920 possible that DEF_REGULAR is not set now but will be set
3921 later (it is never cleared). We account for that
3922 possibility below by storing information in the
3923 dyn_relocs field of the hash table entry. A similar
3924 situation occurs when creating shared libraries and symbol
3925 visibility changes render the symbol local.
3927 If on the other hand, we are creating an executable, we
3928 may need to keep relocations for symbols satisfied by a
3929 dynamic library if we manage to avoid copy relocs for the
3930 symbol. */
3931 if ((info->shared
3932 && (sec->flags & SEC_ALLOC) != 0
3933 && ((r_type != R_M32R_26_PCREL_RELA
3934 && r_type != R_M32R_18_PCREL_RELA
3935 && r_type != R_M32R_REL32)
3936 || (h != NULL
3937 && (! info->symbolic
3938 || h->root.type == bfd_link_hash_defweak
3939 || !h->def_regular))))
3940 || (!info->shared
3941 && (sec->flags & SEC_ALLOC) != 0
3942 && h != NULL
3943 && (h->root.type == bfd_link_hash_defweak
3944 || !h->def_regular)))
3946 struct elf_m32r_dyn_relocs *p;
3947 struct elf_m32r_dyn_relocs **head;
3949 if (dynobj == NULL)
3950 htab->root.dynobj = dynobj = abfd;
3952 /* When creating a shared object, we must copy these
3953 relocs into the output file. We create a reloc
3954 section in dynobj and make room for the reloc. */
3955 if (sreloc == NULL)
3957 const char *name;
3959 name = (bfd_elf_string_from_elf_section
3960 (abfd,
3961 elf_elfheader (abfd)->e_shstrndx,
3962 elf_section_data (sec)->rel_hdr.sh_name));
3963 if (name == NULL)
3964 return FALSE;
3966 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3967 && strcmp (bfd_get_section_name (abfd, sec),
3968 name + 5) == 0);
3970 sreloc = bfd_get_section_by_name (dynobj, name);
3971 if (sreloc == NULL)
3973 flagword flags;
3975 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3976 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3977 if ((sec->flags & SEC_ALLOC) != 0)
3978 flags |= SEC_ALLOC | SEC_LOAD;
3979 sreloc = bfd_make_section_with_flags (dynobj,
3980 name,
3981 flags);
3982 if (sreloc == NULL
3983 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
3984 return FALSE;
3986 elf_section_data (sec)->sreloc = sreloc;
3989 /* If this is a global symbol, we count the number of
3990 relocations we need for this symbol. */
3991 if (h != NULL)
3992 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3993 else
3995 asection *s;
3997 /* Track dynamic relocs needed for local syms too. */
3998 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3999 sec, r_symndx);
4000 if (s == NULL)
4001 return FALSE;
4003 head = ((struct elf_m32r_dyn_relocs **)
4004 &elf_section_data (s)->local_dynrel);
4007 p = *head;
4008 if (p == NULL || p->sec != sec)
4010 bfd_size_type amt = sizeof (*p);
4012 p = bfd_alloc (dynobj, amt);
4013 if (p == NULL)
4014 return FALSE;
4015 p->next = *head;
4016 *head = p;
4017 p->sec = sec;
4018 p->count = 0;
4019 p->pc_count = 0;
4022 p->count += 1;
4023 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4024 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32
4025 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA)
4026 p->pc_count += 1;
4028 break;
4030 /* This relocation describes the C++ object vtable hierarchy.
4031 Reconstruct it for later use during GC. */
4032 case R_M32R_RELA_GNU_VTINHERIT:
4033 case R_M32R_GNU_VTINHERIT:
4034 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4035 return FALSE;
4036 break;
4038 /* This relocation describes which C++ vtable entries are actually
4039 used. Record for later use during GC. */
4040 case R_M32R_GNU_VTENTRY:
4041 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4042 return FALSE;
4043 break;
4044 case R_M32R_RELA_GNU_VTENTRY:
4045 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4046 return FALSE;
4047 break;
4051 return TRUE;
4054 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4056 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4057 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4058 { NULL, 0, 0, 0, 0 }
4061 static bfd_boolean
4062 m32r_elf_fake_sections (bfd *abfd,
4063 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4064 asection *sec)
4066 const char *name;
4068 name = bfd_get_section_name (abfd, sec);
4070 /* The generic elf_fake_sections will set up REL_HDR using the
4071 default kind of relocations. But, we may actually need both
4072 kinds of relocations, so we set up the second header here.
4074 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4075 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4076 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4077 of the resulting empty .rela.<section> sections starts with
4078 sh_offset == object size, and ld doesn't allow that. While the check
4079 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4080 avoided by not emitting those useless sections in the first place. */
4081 if ((sec->flags & SEC_RELOC) != 0)
4083 struct bfd_elf_section_data *esd;
4084 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4086 esd = elf_section_data (sec);
4087 BFD_ASSERT (esd->rel_hdr2 == NULL);
4088 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4089 if (!esd->rel_hdr2)
4090 return FALSE;
4091 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4092 !sec->use_rela_p);
4095 return TRUE;
4098 static enum elf_reloc_type_class
4099 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4101 switch ((int) ELF32_R_TYPE (rela->r_info))
4103 case R_M32R_RELATIVE: return reloc_class_relative;
4104 case R_M32R_JMP_SLOT: return reloc_class_plt;
4105 case R_M32R_COPY: return reloc_class_copy;
4106 default: return reloc_class_normal;
4110 #define ELF_ARCH bfd_arch_m32r
4111 #define ELF_MACHINE_CODE EM_M32R
4112 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4113 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4115 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4116 #define TARGET_BIG_NAME "elf32-m32r"
4117 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4118 #define TARGET_LITTLE_NAME "elf32-m32rle"
4120 #define elf_info_to_howto m32r_info_to_howto
4121 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4122 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4123 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4124 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4125 #define elf_backend_relocate_section m32r_elf_relocate_section
4126 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4127 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4128 #define elf_backend_check_relocs m32r_elf_check_relocs
4130 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4131 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4132 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4133 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4134 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4135 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4136 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4137 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4139 #define elf_backend_can_gc_sections 1
4140 /*#if !USE_REL
4141 #define elf_backend_rela_normal 1
4142 #endif*/
4143 #define elf_backend_can_refcount 1
4144 #define elf_backend_want_got_plt 1
4145 #define elf_backend_plt_readonly 1
4146 #define elf_backend_want_plt_sym 0
4147 #define elf_backend_got_header_size 12
4149 #define elf_backend_may_use_rel_p 1
4150 #ifdef USE_M32R_OLD_RELOC
4151 #define elf_backend_default_use_rela_p 0
4152 #define elf_backend_may_use_rela_p 0
4153 #else
4154 #define elf_backend_default_use_rela_p 1
4155 #define elf_backend_may_use_rela_p 1
4156 #define elf_backend_fake_sections m32r_elf_fake_sections
4157 #endif
4159 #define elf_backend_object_p m32r_elf_object_p
4160 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4161 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4162 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4163 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4164 #define elf_backend_special_sections m32r_elf_special_sections
4166 #include "elf32-target.h"
4168 #undef ELF_MAXPAGESIZE
4169 #define ELF_MAXPAGESIZE 0x1000
4171 #undef TARGET_BIG_SYM
4172 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4173 #undef TARGET_BIG_NAME
4174 #define TARGET_BIG_NAME "elf32-m32r-linux"
4175 #undef TARGET_LITTLE_SYM
4176 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4177 #undef TARGET_LITTLE_NAME
4178 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4179 #undef elf32_bed
4180 #define elf32_bed elf32_m32r_lin_bed
4182 #include "elf32-target.h"