* m32r.opc: Formatting.
[binutils.git] / bfd / elf32-m32r.c
blob915405dbf1c799d5d00a9a3262705369c9464aea
1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007 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,
1577 sizeof (struct elf_m32r_link_hash_entry)))
1579 free (ret);
1580 return NULL;
1583 ret->sgot = NULL;
1584 ret->sgotplt = NULL;
1585 ret->srelgot = NULL;
1586 ret->splt = NULL;
1587 ret->srelplt = NULL;
1588 ret->sdynbss = NULL;
1589 ret->srelbss = NULL;
1590 ret->sym_sec.abfd = NULL;
1592 return &ret->root.root;
1595 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1596 shortcuts to them in our hash table. */
1598 static bfd_boolean
1599 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1601 struct elf_m32r_link_hash_table *htab;
1603 if (! _bfd_elf_create_got_section (dynobj, info))
1604 return FALSE;
1606 htab = m32r_elf_hash_table (info);
1607 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1608 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1609 if (! htab->sgot || ! htab->sgotplt)
1610 abort ();
1612 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1613 (SEC_ALLOC
1614 | SEC_LOAD
1615 | SEC_HAS_CONTENTS
1616 | SEC_IN_MEMORY
1617 | SEC_LINKER_CREATED
1618 | SEC_READONLY));
1619 if (htab->srelgot == NULL
1620 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1621 return FALSE;
1623 return TRUE;
1626 /* Create dynamic sections when linking against a dynamic object. */
1628 static bfd_boolean
1629 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1631 struct elf_m32r_link_hash_table *htab;
1632 flagword flags, pltflags;
1633 asection *s;
1634 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1635 int ptralign = 2; /* 32bit */
1637 htab = m32r_elf_hash_table (info);
1639 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1640 .rel[a].bss sections. */
1641 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1642 | SEC_LINKER_CREATED);
1644 pltflags = flags;
1645 pltflags |= SEC_CODE;
1646 if (bed->plt_not_loaded)
1647 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1648 if (bed->plt_readonly)
1649 pltflags |= SEC_READONLY;
1651 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1652 htab->splt = s;
1653 if (s == NULL
1654 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1655 return FALSE;
1657 if (bed->want_plt_sym)
1659 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1660 .plt section. */
1661 struct bfd_link_hash_entry *bh = NULL;
1662 struct elf_link_hash_entry *h;
1664 if (! (_bfd_generic_link_add_one_symbol
1665 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1666 (bfd_vma) 0, NULL, FALSE,
1667 get_elf_backend_data (abfd)->collect, &bh)))
1668 return FALSE;
1669 h = (struct elf_link_hash_entry *) bh;
1670 h->def_regular = 1;
1671 h->type = STT_OBJECT;
1672 htab->root.hplt = h;
1674 if (info->shared
1675 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1676 return FALSE;
1679 s = bfd_make_section_with_flags (abfd,
1680 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1681 flags | SEC_READONLY);
1682 htab->srelplt = s;
1683 if (s == NULL
1684 || ! bfd_set_section_alignment (abfd, s, ptralign))
1685 return FALSE;
1687 if (htab->sgot == NULL
1688 && ! create_got_section (abfd, info))
1689 return FALSE;
1692 const char *secname;
1693 char *relname;
1694 flagword secflags;
1695 asection *sec;
1697 for (sec = abfd->sections; sec; sec = sec->next)
1699 secflags = bfd_get_section_flags (abfd, sec);
1700 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1701 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1702 continue;
1703 secname = bfd_get_section_name (abfd, sec);
1704 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1705 strcpy (relname, ".rela");
1706 strcat (relname, secname);
1707 if (bfd_get_section_by_name (abfd, secname))
1708 continue;
1709 s = bfd_make_section_with_flags (abfd, relname,
1710 flags | SEC_READONLY);
1711 if (s == NULL
1712 || ! bfd_set_section_alignment (abfd, s, ptralign))
1713 return FALSE;
1717 if (bed->want_dynbss)
1719 /* The .dynbss section is a place to put symbols which are defined
1720 by dynamic objects, are referenced by regular objects, and are
1721 not functions. We must allocate space for them in the process
1722 image and use a R_*_COPY reloc to tell the dynamic linker to
1723 initialize them at run time. The linker script puts the .dynbss
1724 section into the .bss section of the final image. */
1725 s = bfd_make_section_with_flags (abfd, ".dynbss",
1726 SEC_ALLOC | SEC_LINKER_CREATED);
1727 htab->sdynbss = s;
1728 if (s == NULL)
1729 return FALSE;
1730 /* The .rel[a].bss section holds copy relocs. This section is not
1731 normally needed. We need to create it here, though, so that the
1732 linker will map it to an output section. We can't just create it
1733 only if we need it, because we will not know whether we need it
1734 until we have seen all the input files, and the first time the
1735 main linker code calls BFD after examining all the input files
1736 (size_dynamic_sections) the input sections have already been
1737 mapped to the output sections. If the section turns out not to
1738 be needed, we can discard it later. We will never need this
1739 section when generating a shared object, since they do not use
1740 copy relocs. */
1741 if (! info->shared)
1743 s = bfd_make_section_with_flags (abfd,
1744 (bed->default_use_rela_p
1745 ? ".rela.bss" : ".rel.bss"),
1746 flags | SEC_READONLY);
1747 htab->srelbss = s;
1748 if (s == NULL
1749 || ! bfd_set_section_alignment (abfd, s, ptralign))
1750 return FALSE;
1754 return TRUE;
1757 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1759 static void
1760 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1761 struct elf_link_hash_entry *dir,
1762 struct elf_link_hash_entry *ind)
1764 struct elf_m32r_link_hash_entry * edir;
1765 struct elf_m32r_link_hash_entry * eind;
1767 edir = (struct elf_m32r_link_hash_entry *) dir;
1768 eind = (struct elf_m32r_link_hash_entry *) ind;
1770 if (eind->dyn_relocs != NULL)
1772 if (edir->dyn_relocs != NULL)
1774 struct elf_m32r_dyn_relocs **pp;
1775 struct elf_m32r_dyn_relocs *p;
1777 /* Add reloc counts against the indirect sym to the direct sym
1778 list. Merge any entries against the same section. */
1779 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1781 struct elf_m32r_dyn_relocs *q;
1783 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1784 if (q->sec == p->sec)
1786 q->pc_count += p->pc_count;
1787 q->count += p->count;
1788 *pp = p->next;
1789 break;
1791 if (q == NULL)
1792 pp = &p->next;
1794 *pp = edir->dyn_relocs;
1797 edir->dyn_relocs = eind->dyn_relocs;
1798 eind->dyn_relocs = NULL;
1801 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1805 /* Adjust a symbol defined by a dynamic object and referenced by a
1806 regular object. The current definition is in some section of the
1807 dynamic object, but we're not including those sections. We have to
1808 change the definition to something the rest of the link can
1809 understand. */
1811 static bfd_boolean
1812 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1813 struct elf_link_hash_entry *h)
1815 struct elf_m32r_link_hash_table *htab;
1816 struct elf_m32r_link_hash_entry *eh;
1817 struct elf_m32r_dyn_relocs *p;
1818 bfd *dynobj;
1819 asection *s;
1820 unsigned int power_of_two;
1822 #ifdef DEBUG_PIC
1823 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1824 #endif
1826 dynobj = elf_hash_table (info)->dynobj;
1828 /* Make sure we know what is going on here. */
1829 BFD_ASSERT (dynobj != NULL
1830 && (h->needs_plt
1831 || h->u.weakdef != NULL
1832 || (h->def_dynamic
1833 && h->ref_regular
1834 && !h->def_regular)));
1836 /* If this is a function, put it in the procedure linkage table. We
1837 will fill in the contents of the procedure linkage table later,
1838 when we know the address of the .got section. */
1839 if (h->type == STT_FUNC
1840 || h->needs_plt)
1842 if (! info->shared
1843 && !h->def_dynamic
1844 && !h->ref_dynamic
1845 && h->root.type != bfd_link_hash_undefweak
1846 && h->root.type != bfd_link_hash_undefined)
1848 /* This case can occur if we saw a PLT reloc in an input
1849 file, but the symbol was never referred to by a dynamic
1850 object. In such a case, we don't actually need to build
1851 a procedure linkage table, and we can just do a PCREL
1852 reloc instead. */
1853 h->plt.offset = (bfd_vma) -1;
1854 h->needs_plt = 0;
1857 return TRUE;
1859 else
1860 h->plt.offset = (bfd_vma) -1;
1862 /* If this is a weak symbol, and there is a real definition, the
1863 processor independent code will have arranged for us to see the
1864 real definition first, and we can just use the same value. */
1865 if (h->u.weakdef != NULL)
1867 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1868 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1869 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1870 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1871 return TRUE;
1874 /* This is a reference to a symbol defined by a dynamic object which
1875 is not a function. */
1877 /* If we are creating a shared library, we must presume that the
1878 only references to the symbol are via the global offset table.
1879 For such cases we need not do anything here; the relocations will
1880 be handled correctly by relocate_section. */
1881 if (info->shared)
1882 return TRUE;
1884 /* If there are no references to this symbol that do not use the
1885 GOT, we don't need to generate a copy reloc. */
1886 if (!h->non_got_ref)
1887 return TRUE;
1889 /* If -z nocopyreloc was given, we won't generate them either. */
1890 if (info->nocopyreloc)
1892 h->non_got_ref = 0;
1893 return TRUE;
1896 eh = (struct elf_m32r_link_hash_entry *) h;
1897 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1899 s = p->sec->output_section;
1900 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1901 break;
1904 /* If we didn't find any dynamic relocs in sections which needs the
1905 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1906 the copy reloc. */
1907 if (p == NULL)
1909 h->non_got_ref = 0;
1910 return TRUE;
1913 if (h->size == 0)
1915 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1916 h->root.root.string);
1917 return TRUE;
1920 /* We must allocate the symbol in our .dynbss section, which will
1921 become part of the .bss section of the executable. There will be
1922 an entry for this symbol in the .dynsym section. The dynamic
1923 object will contain position independent code, so all references
1924 from the dynamic object to this symbol will go through the global
1925 offset table. The dynamic linker will use the .dynsym entry to
1926 determine the address it must put in the global offset table, so
1927 both the dynamic object and the regular object will refer to the
1928 same memory location for the variable. */
1930 htab = m32r_elf_hash_table (info);
1931 s = htab->sdynbss;
1932 BFD_ASSERT (s != NULL);
1934 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1935 to copy the initial value out of the dynamic object and into the
1936 runtime process image. We need to remember the offset into the
1937 .rela.bss section we are going to use. */
1938 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1940 asection *srel;
1942 srel = htab->srelbss;
1943 BFD_ASSERT (srel != NULL);
1944 srel->size += sizeof (Elf32_External_Rela);
1945 h->needs_copy = 1;
1948 /* We need to figure out the alignment required for this symbol. I
1949 have no idea how ELF linkers handle this. */
1950 power_of_two = bfd_log2 (h->size);
1951 if (power_of_two > 3)
1952 power_of_two = 3;
1954 /* Apply the required alignment. */
1955 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1956 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1958 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1959 return FALSE;
1962 /* Define the symbol as being at this point in the section. */
1963 h->root.u.def.section = s;
1964 h->root.u.def.value = s->size;
1966 /* Increment the section size to make room for the symbol. */
1967 s->size += h->size;
1969 return TRUE;
1972 /* Allocate space in .plt, .got and associated reloc sections for
1973 dynamic relocs. */
1975 static bfd_boolean
1976 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1978 struct bfd_link_info *info;
1979 struct elf_m32r_link_hash_table *htab;
1980 struct elf_m32r_link_hash_entry *eh;
1981 struct elf_m32r_dyn_relocs *p;
1983 if (h->root.type == bfd_link_hash_indirect)
1984 return TRUE;
1986 if (h->root.type == bfd_link_hash_warning)
1987 /* When warning symbols are created, they **replace** the "real"
1988 entry in the hash table, thus we never get to see the real
1989 symbol in a hash traversal. So look at it now. */
1990 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1992 info = (struct bfd_link_info *) inf;
1993 htab = m32r_elf_hash_table (info);
1995 eh = (struct elf_m32r_link_hash_entry *) h;
1997 if (htab->root.dynamic_sections_created
1998 && h->plt.refcount > 0)
2000 /* Make sure this symbol is output as a dynamic symbol.
2001 Undefined weak syms won't yet be marked as dynamic. */
2002 if (h->dynindx == -1
2003 && !h->forced_local)
2005 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2006 return FALSE;
2009 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2011 asection *s = htab->splt;
2013 /* If this is the first .plt entry, make room for the special
2014 first entry. */
2015 if (s->size == 0)
2016 s->size += PLT_ENTRY_SIZE;
2018 h->plt.offset = s->size;
2020 /* If this symbol is not defined in a regular file, and we are
2021 not generating a shared library, then set the symbol to this
2022 location in the .plt. This is required to make function
2023 pointers compare as equal between the normal executable and
2024 the shared library. */
2025 if (! info->shared
2026 && !h->def_regular)
2028 h->root.u.def.section = s;
2029 h->root.u.def.value = h->plt.offset;
2032 /* Make room for this entry. */
2033 s->size += PLT_ENTRY_SIZE;
2035 /* We also need to make an entry in the .got.plt section, which
2036 will be placed in the .got section by the linker script. */
2037 htab->sgotplt->size += 4;
2039 /* We also need to make an entry in the .rel.plt section. */
2040 htab->srelplt->size += sizeof (Elf32_External_Rela);
2042 else
2044 h->plt.offset = (bfd_vma) -1;
2045 h->needs_plt = 0;
2048 else
2050 h->plt.offset = (bfd_vma) -1;
2051 h->needs_plt = 0;
2054 if (h->got.refcount > 0)
2056 asection *s;
2057 bfd_boolean dyn;
2059 /* Make sure this symbol is output as a dynamic symbol.
2060 Undefined weak syms won't yet be marked as dynamic. */
2061 if (h->dynindx == -1
2062 && !h->forced_local)
2064 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2065 return FALSE;
2068 s = htab->sgot;
2070 h->got.offset = s->size;
2071 s->size += 4;
2072 dyn = htab->root.dynamic_sections_created;
2073 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2074 htab->srelgot->size += sizeof (Elf32_External_Rela);
2076 else
2077 h->got.offset = (bfd_vma) -1;
2079 if (eh->dyn_relocs == NULL)
2080 return TRUE;
2082 /* In the shared -Bsymbolic case, discard space allocated for
2083 dynamic pc-relative relocs against symbols which turn out to be
2084 defined in regular objects. For the normal shared case, discard
2085 space for pc-relative relocs that have become local due to symbol
2086 visibility changes. */
2088 if (info->shared)
2090 if (h->def_regular
2091 && (h->forced_local
2092 || info->symbolic))
2094 struct elf_m32r_dyn_relocs **pp;
2096 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2098 p->count -= p->pc_count;
2099 p->pc_count = 0;
2100 if (p->count == 0)
2101 *pp = p->next;
2102 else
2103 pp = &p->next;
2107 /* Also discard relocs on undefined weak syms with non-default
2108 visibility. */
2109 if (eh->dyn_relocs != NULL
2110 && h->root.type == bfd_link_hash_undefweak)
2112 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2113 eh->dyn_relocs = NULL;
2115 /* Make sure undefined weak symbols are output as a dynamic
2116 symbol in PIEs. */
2117 else if (h->dynindx == -1
2118 && !h->forced_local)
2120 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2121 return FALSE;
2125 else
2127 /* For the non-shared case, discard space for relocs against
2128 symbols which turn out to need copy relocs or are not
2129 dynamic. */
2131 if (!h->non_got_ref
2132 && ((h->def_dynamic
2133 && !h->def_regular)
2134 || (htab->root.dynamic_sections_created
2135 && (h->root.type == bfd_link_hash_undefweak
2136 || h->root.type == bfd_link_hash_undefined))))
2138 /* Make sure this symbol is output as a dynamic symbol.
2139 Undefined weak syms won't yet be marked as dynamic. */
2140 if (h->dynindx == -1
2141 && !h->forced_local)
2143 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2144 return FALSE;
2147 /* If that succeeded, we know we'll be keeping all the
2148 relocs. */
2149 if (h->dynindx != -1)
2150 goto keep;
2153 eh->dyn_relocs = NULL;
2155 keep: ;
2158 /* Finally, allocate space. */
2159 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2161 asection *sreloc = elf_section_data (p->sec)->sreloc;
2162 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2165 return TRUE;
2168 /* Find any dynamic relocs that apply to read-only sections. */
2170 static bfd_boolean
2171 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2173 struct elf_m32r_link_hash_entry *eh;
2174 struct elf_m32r_dyn_relocs *p;
2176 if (h->root.type == bfd_link_hash_warning)
2177 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2179 eh = (struct elf_m32r_link_hash_entry *) h;
2180 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2182 asection *s = p->sec->output_section;
2184 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2186 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2188 info->flags |= DF_TEXTREL;
2190 /* Not an error, just cut short the traversal. */
2191 return FALSE;
2194 return TRUE;
2197 /* Set the sizes of the dynamic sections. */
2199 static bfd_boolean
2200 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2201 struct bfd_link_info *info)
2203 struct elf_m32r_link_hash_table *htab;
2204 bfd *dynobj;
2205 asection *s;
2206 bfd_boolean relocs;
2207 bfd *ibfd;
2209 #ifdef DEBUG_PIC
2210 printf ("m32r_elf_size_dynamic_sections()\n");
2211 #endif
2213 htab = m32r_elf_hash_table (info);
2214 dynobj = htab->root.dynobj;
2215 BFD_ASSERT (dynobj != NULL);
2217 if (htab->root.dynamic_sections_created)
2219 /* Set the contents of the .interp section to the interpreter. */
2220 if (info->executable)
2222 s = bfd_get_section_by_name (dynobj, ".interp");
2223 BFD_ASSERT (s != NULL);
2224 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2225 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2229 /* Set up .got offsets for local syms, and space for local dynamic
2230 relocs. */
2231 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2233 bfd_signed_vma *local_got;
2234 bfd_signed_vma *end_local_got;
2235 bfd_size_type locsymcount;
2236 Elf_Internal_Shdr *symtab_hdr;
2237 asection *srel;
2239 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2240 continue;
2242 for (s = ibfd->sections; s != NULL; s = s->next)
2244 struct elf_m32r_dyn_relocs *p;
2246 for (p = ((struct elf_m32r_dyn_relocs *)
2247 elf_section_data (s)->local_dynrel);
2248 p != NULL;
2249 p = p->next)
2251 if (! bfd_is_abs_section (p->sec)
2252 && bfd_is_abs_section (p->sec->output_section))
2254 /* Input section has been discarded, either because
2255 it is a copy of a linkonce section or due to
2256 linker script /DISCARD/, so we'll be discarding
2257 the relocs too. */
2259 else if (p->count != 0)
2261 srel = elf_section_data (p->sec)->sreloc;
2262 srel->size += p->count * sizeof (Elf32_External_Rela);
2263 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2264 info->flags |= DF_TEXTREL;
2269 local_got = elf_local_got_refcounts (ibfd);
2270 if (!local_got)
2271 continue;
2273 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2274 locsymcount = symtab_hdr->sh_info;
2275 end_local_got = local_got + locsymcount;
2276 s = htab->sgot;
2277 srel = htab->srelgot;
2278 for (; local_got < end_local_got; ++local_got)
2280 if (*local_got > 0)
2282 *local_got = s->size;
2283 s->size += 4;
2284 if (info->shared)
2285 srel->size += sizeof (Elf32_External_Rela);
2287 else
2288 *local_got = (bfd_vma) -1;
2292 /* Allocate global sym .plt and .got entries, and space for global
2293 sym dynamic relocs. */
2294 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2296 /* We now have determined the sizes of the various dynamic sections.
2297 Allocate memory for them. */
2298 relocs = FALSE;
2299 for (s = dynobj->sections; s != NULL; s = s->next)
2301 if ((s->flags & SEC_LINKER_CREATED) == 0)
2302 continue;
2304 if (s == htab->splt
2305 || s == htab->sgot
2306 || s == htab->sgotplt
2307 || s == htab->sdynbss)
2309 /* Strip this section if we don't need it; see the
2310 comment below. */
2312 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2314 if (s->size != 0 && s != htab->srelplt)
2315 relocs = TRUE;
2317 /* We use the reloc_count field as a counter if we need
2318 to copy relocs into the output file. */
2319 s->reloc_count = 0;
2321 else
2322 /* It's not one of our sections, so don't allocate space. */
2323 continue;
2325 if (s->size == 0)
2327 /* If we don't need this section, strip it from the
2328 output file. This is mostly to handle .rela.bss and
2329 .rela.plt. We must create both sections in
2330 create_dynamic_sections, because they must be created
2331 before the linker maps input sections to output
2332 sections. The linker does that before
2333 adjust_dynamic_symbol is called, and it is that
2334 function which decides whether anything needs to go
2335 into these sections. */
2336 s->flags |= SEC_EXCLUDE;
2337 continue;
2340 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2341 continue;
2343 /* Allocate memory for the section contents. We use bfd_zalloc
2344 here in case unused entries are not reclaimed before the
2345 section's contents are written out. This should not happen,
2346 but this way if it does, we get a R_M32R_NONE reloc instead
2347 of garbage. */
2348 s->contents = bfd_zalloc (dynobj, s->size);
2349 if (s->contents == NULL)
2350 return FALSE;
2353 if (htab->root.dynamic_sections_created)
2355 /* Add some entries to the .dynamic section. We fill in the
2356 values later, in m32r_elf_finish_dynamic_sections, but we
2357 must add the entries now so that we get the correct size for
2358 the .dynamic section. The DT_DEBUG entry is filled in by the
2359 dynamic linker and used by the debugger. */
2360 #define add_dynamic_entry(TAG, VAL) \
2361 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2363 if (info->executable)
2365 if (! add_dynamic_entry (DT_DEBUG, 0))
2366 return FALSE;
2369 if (htab->splt->size != 0)
2371 if (! add_dynamic_entry (DT_PLTGOT, 0)
2372 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2373 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2374 || ! add_dynamic_entry (DT_JMPREL, 0))
2375 return FALSE;
2378 if (relocs)
2380 if (! add_dynamic_entry (DT_RELA, 0)
2381 || ! add_dynamic_entry (DT_RELASZ, 0)
2382 || ! add_dynamic_entry (DT_RELAENT,
2383 sizeof (Elf32_External_Rela)))
2384 return FALSE;
2386 /* If any dynamic relocs apply to a read-only section,
2387 then we need a DT_TEXTREL entry. */
2388 if ((info->flags & DF_TEXTREL) == 0)
2389 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2390 info);
2392 if ((info->flags & DF_TEXTREL) != 0)
2394 if (! add_dynamic_entry (DT_TEXTREL, 0))
2395 return FALSE;
2399 #undef add_dynamic_entry
2401 return TRUE;
2404 /* Relocate an M32R/D ELF section.
2405 There is some attempt to make this function usable for many architectures,
2406 both for RELA and REL type relocs, if only to serve as a learning tool.
2408 The RELOCATE_SECTION function is called by the new ELF backend linker
2409 to handle the relocations for a section.
2411 The relocs are always passed as Rela structures; if the section
2412 actually uses Rel structures, the r_addend field will always be
2413 zero.
2415 This function is responsible for adjust the section contents as
2416 necessary, and (if using Rela relocs and generating a
2417 relocatable output file) adjusting the reloc addend as
2418 necessary.
2420 This function does not have to worry about setting the reloc
2421 address or the reloc symbol index.
2423 LOCAL_SYMS is a pointer to the swapped in local symbols.
2425 LOCAL_SECTIONS is an array giving the section in the input file
2426 corresponding to the st_shndx field of each local symbol.
2428 The global hash table entry for the global symbols can be found
2429 via elf_sym_hashes (input_bfd).
2431 When generating relocatable output, this function must handle
2432 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2433 going to be the section symbol corresponding to the output
2434 section, which means that the addend must be adjusted
2435 accordingly. */
2437 static bfd_boolean
2438 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2439 struct bfd_link_info *info,
2440 bfd *input_bfd,
2441 asection *input_section,
2442 bfd_byte *contents,
2443 Elf_Internal_Rela *relocs,
2444 Elf_Internal_Sym *local_syms,
2445 asection **local_sections)
2447 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2448 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2449 Elf_Internal_Rela *rel, *relend;
2450 /* Assume success. */
2451 bfd_boolean ret = TRUE;
2453 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2454 bfd *dynobj;
2455 bfd_vma *local_got_offsets;
2456 asection *sgot, *splt, *sreloc;
2457 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2459 dynobj = htab->root.dynobj;
2460 local_got_offsets = elf_local_got_offsets (input_bfd);
2462 sgot = htab->sgot;
2463 splt = htab->splt;
2464 sreloc = NULL;
2466 rel = relocs;
2467 relend = relocs + input_section->reloc_count;
2468 for (; rel < relend; rel++)
2470 int r_type;
2471 reloc_howto_type *howto;
2472 unsigned long r_symndx;
2473 struct elf_link_hash_entry *h;
2474 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2475 ensure it's zero (we use REL relocs, not RELA). Therefore this
2476 should be assigning zero to `addend', but for clarity we use
2477 `r_addend'. */
2478 bfd_vma addend = rel->r_addend;
2479 bfd_vma offset = rel->r_offset;
2480 bfd_vma relocation;
2481 Elf_Internal_Sym *sym;
2482 asection *sec;
2483 const char *sym_name;
2484 bfd_reloc_status_type r;
2485 const char *errmsg = NULL;
2486 bfd_boolean use_rel = FALSE;
2488 h = NULL;
2489 r_type = ELF32_R_TYPE (rel->r_info);
2490 if (r_type < 0 || r_type >= (int) R_M32R_max)
2492 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2493 input_bfd,
2494 (int) r_type);
2495 bfd_set_error (bfd_error_bad_value);
2496 ret = FALSE;
2497 continue;
2500 if ( r_type == R_M32R_GNU_VTENTRY
2501 || r_type == R_M32R_GNU_VTINHERIT
2502 || r_type == R_M32R_NONE
2503 || r_type == R_M32R_RELA_GNU_VTENTRY
2504 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2505 continue;
2507 if (r_type <= R_M32R_GNU_VTENTRY)
2508 use_rel = TRUE;
2510 howto = m32r_elf_howto_table + r_type;
2511 r_symndx = ELF32_R_SYM (rel->r_info);
2513 sym = NULL;
2514 sec = NULL;
2515 h = NULL;
2517 if (r_symndx < symtab_hdr->sh_info)
2519 /* Local symbol. */
2520 sym = local_syms + r_symndx;
2521 sec = local_sections[r_symndx];
2522 sym_name = "<local symbol>";
2524 if (!use_rel)
2526 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2527 addend = rel->r_addend;
2529 else
2531 relocation = (sec->output_section->vma
2532 + sec->output_offset
2533 + sym->st_value);
2536 else
2538 /* External symbol. */
2539 relocation = 0;
2541 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2542 while (h->root.type == bfd_link_hash_indirect
2543 || h->root.type == bfd_link_hash_warning)
2544 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2545 sym_name = h->root.root.string;
2547 if (h->root.type == bfd_link_hash_defined
2548 || h->root.type == bfd_link_hash_defweak)
2550 bfd_boolean dyn;
2551 sec = h->root.u.def.section;
2553 dyn = htab->root.dynamic_sections_created;
2554 sec = h->root.u.def.section;
2555 if (r_type == R_M32R_GOTPC24
2556 || (r_type == R_M32R_GOTPC_HI_ULO
2557 || r_type == R_M32R_GOTPC_HI_SLO
2558 || r_type == R_M32R_GOTPC_LO)
2559 || (r_type == R_M32R_26_PLTREL
2560 && h->plt.offset != (bfd_vma) -1)
2561 || ((r_type == R_M32R_GOT24
2562 || r_type == R_M32R_GOT16_HI_ULO
2563 || r_type == R_M32R_GOT16_HI_SLO
2564 || r_type == R_M32R_GOT16_LO)
2565 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2566 info->shared, h)
2567 && (! info->shared
2568 || (! info->symbolic && h->dynindx != -1)
2569 || !h->def_regular))
2570 || (info->shared
2571 && ((! info->symbolic && h->dynindx != -1)
2572 || !h->def_regular)
2573 && (((r_type == R_M32R_16_RELA
2574 || r_type == R_M32R_32_RELA
2575 || r_type == R_M32R_24_RELA
2576 || r_type == R_M32R_HI16_ULO_RELA
2577 || r_type == R_M32R_HI16_SLO_RELA
2578 || r_type == R_M32R_LO16_RELA)
2579 && !h->forced_local)
2580 || r_type == R_M32R_REL32
2581 || r_type == R_M32R_10_PCREL_RELA
2582 || r_type == R_M32R_18_PCREL_RELA
2583 || r_type == R_M32R_26_PCREL_RELA)
2584 && ((input_section->flags & SEC_ALLOC) != 0
2585 /* DWARF will emit R_M32R_16(24,32) relocations
2586 in its sections against symbols defined
2587 externally in shared libraries. We can't do
2588 anything with them here. */
2589 || ((input_section->flags & SEC_DEBUGGING) != 0
2590 && h->def_dynamic))))
2592 /* In these cases, we don't need the relocation
2593 value. We check specially because in some
2594 obscure cases sec->output_section will be NULL. */
2596 else if (sec->output_section != NULL)
2597 relocation = (h->root.u.def.value
2598 + sec->output_section->vma
2599 + sec->output_offset);
2600 else if (!info->relocatable)
2602 (*_bfd_error_handler)
2603 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2604 input_bfd,
2605 input_section,
2606 (long) rel->r_offset,
2607 howto->name,
2608 h->root.root.string);
2611 else if (h->root.type == bfd_link_hash_undefweak)
2613 else if (info->unresolved_syms_in_objects == RM_IGNORE
2614 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2616 else if (!info->relocatable)
2618 if (! ((*info->callbacks->undefined_symbol)
2619 (info, h->root.root.string, input_bfd,
2620 input_section, offset,
2621 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2622 || ELF_ST_VISIBILITY (h->other)))))
2623 return FALSE;
2627 if (sec != NULL && elf_discarded_section (sec))
2629 /* For relocs against symbols from removed linkonce sections,
2630 or sections discarded by a linker script, we just want the
2631 section contents zeroed. Avoid any special processing. */
2632 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2633 rel->r_info = 0;
2634 rel->r_addend = 0;
2635 continue;
2638 if (info->relocatable && !use_rel)
2640 /* This is a relocatable link. We don't have to change
2641 anything, unless the reloc is against a section symbol,
2642 in which case we have to adjust according to where the
2643 section symbol winds up in the output section. */
2644 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2645 rel->r_addend += sec->output_offset;
2646 continue;
2649 if (info->relocatable && use_rel)
2651 /* This is a relocatable link. We don't have to change
2652 anything, unless the reloc is against a section symbol,
2653 in which case we have to adjust according to where the
2654 section symbol winds up in the output section. */
2655 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2656 continue;
2658 addend += sec->output_offset;
2660 /* If partial_inplace, we need to store any additional addend
2661 back in the section. */
2662 if (! howto->partial_inplace)
2663 continue;
2664 /* ??? Here is a nice place to call a special_function
2665 like handler. */
2666 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2667 r = _bfd_relocate_contents (howto, input_bfd,
2668 addend, contents + offset);
2669 else
2671 Elf_Internal_Rela *lorel;
2673 /* We allow an arbitrary number of HI16 relocs before the
2674 LO16 reloc. This permits gcc to emit the HI and LO relocs
2675 itself. */
2676 for (lorel = rel + 1;
2677 (lorel < relend
2678 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2679 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2680 lorel++)
2681 continue;
2682 if (lorel < relend
2683 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2685 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2686 contents, addend);
2687 r = bfd_reloc_ok;
2689 else
2690 r = _bfd_relocate_contents (howto, input_bfd,
2691 addend, contents + offset);
2694 else
2696 /* Sanity check the address. */
2697 if (offset > high_address)
2699 r = bfd_reloc_outofrange;
2700 goto check_reloc;
2703 switch ((int) r_type)
2705 case R_M32R_GOTOFF:
2706 /* Relocation is relative to the start of the global offset
2707 table (for ld24 rx, #uimm24). eg access at label+addend
2709 ld24 rx. #label@GOTOFF + addend
2710 sub rx, r12. */
2712 BFD_ASSERT (sgot != NULL);
2714 relocation = -(relocation - sgot->output_section->vma);
2715 rel->r_addend = -rel->r_addend;
2716 break;
2718 case R_M32R_GOTOFF_HI_ULO:
2719 case R_M32R_GOTOFF_HI_SLO:
2720 case R_M32R_GOTOFF_LO:
2721 BFD_ASSERT (sgot != NULL);
2723 relocation -= sgot->output_section->vma;
2725 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2726 && ((relocation + rel->r_addend) & 0x8000))
2727 rel->r_addend += 0x10000;
2728 break;
2730 case R_M32R_GOTPC24:
2731 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2732 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2734 relocation = sgot->output_section->vma;
2735 break;
2737 case R_M32R_GOTPC_HI_ULO:
2738 case R_M32R_GOTPC_HI_SLO:
2739 case R_M32R_GOTPC_LO:
2741 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2742 bl .+4
2743 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2744 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2746 bl .+4
2747 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2748 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2750 relocation = sgot->output_section->vma;
2751 relocation -= (input_section->output_section->vma
2752 + input_section->output_offset
2753 + rel->r_offset);
2754 if ((r_type == R_M32R_GOTPC_HI_SLO)
2755 && ((relocation + rel->r_addend) & 0x8000))
2756 rel->r_addend += 0x10000;
2758 break;
2760 case R_M32R_GOT16_HI_ULO:
2761 case R_M32R_GOT16_HI_SLO:
2762 case R_M32R_GOT16_LO:
2763 /* Fall through. */
2764 case R_M32R_GOT24:
2765 /* Relocation is to the entry for this symbol in the global
2766 offset table. */
2767 BFD_ASSERT (sgot != NULL);
2769 if (h != NULL)
2771 bfd_boolean dyn;
2772 bfd_vma off;
2774 off = h->got.offset;
2775 BFD_ASSERT (off != (bfd_vma) -1);
2777 dyn = htab->root.dynamic_sections_created;
2778 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2779 || (info->shared
2780 && (info->symbolic
2781 || h->dynindx == -1
2782 || h->forced_local)
2783 && h->def_regular))
2785 /* This is actually a static link, or it is a
2786 -Bsymbolic link and the symbol is defined
2787 locally, or the symbol was forced to be local
2788 because of a version file. We must initialize
2789 this entry in the global offset table. Since the
2790 offset must always be a multiple of 4, we use the
2791 least significant bit to record whether we have
2792 initialized it already.
2794 When doing a dynamic link, we create a .rela.got
2795 relocation entry to initialize the value. This
2796 is done in the finish_dynamic_symbol routine. */
2797 if ((off & 1) != 0)
2798 off &= ~1;
2799 else
2801 bfd_put_32 (output_bfd, relocation,
2802 sgot->contents + off);
2803 h->got.offset |= 1;
2807 relocation = sgot->output_offset + off;
2809 else
2811 bfd_vma off;
2812 bfd_byte *loc;
2814 BFD_ASSERT (local_got_offsets != NULL
2815 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2817 off = local_got_offsets[r_symndx];
2819 /* The offset must always be a multiple of 4. We use
2820 the least significant bit to record whether we have
2821 already processed this entry. */
2822 if ((off & 1) != 0)
2823 off &= ~1;
2824 else
2826 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2828 if (info->shared)
2830 asection *srelgot;
2831 Elf_Internal_Rela outrel;
2833 /* We need to generate a R_M32R_RELATIVE reloc
2834 for the dynamic linker. */
2835 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2836 BFD_ASSERT (srelgot != NULL);
2838 outrel.r_offset = (sgot->output_section->vma
2839 + sgot->output_offset
2840 + off);
2841 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2842 outrel.r_addend = relocation;
2843 loc = srelgot->contents;
2844 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2845 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2846 ++srelgot->reloc_count;
2849 local_got_offsets[r_symndx] |= 1;
2852 relocation = sgot->output_offset + off;
2854 if ((r_type == R_M32R_GOT16_HI_SLO)
2855 && ((relocation + rel->r_addend) & 0x8000))
2856 rel->r_addend += 0x10000;
2858 break;
2860 case R_M32R_26_PLTREL:
2861 /* Relocation is to the entry for this symbol in the
2862 procedure linkage table. */
2864 /* The native assembler will generate a 26_PLTREL reloc
2865 for a local symbol if you assemble a call from one
2866 section to another when using -K pic. */
2867 if (h == NULL)
2868 break;
2870 if (h->forced_local)
2871 break;
2873 if (h->plt.offset == (bfd_vma) -1)
2874 /* We didn't make a PLT entry for this symbol. This
2875 happens when statically linking PIC code, or when
2876 using -Bsymbolic. */
2877 break;
2879 relocation = (splt->output_section->vma
2880 + splt->output_offset
2881 + h->plt.offset);
2882 break;
2884 case R_M32R_HI16_SLO_RELA:
2885 if ((relocation + rel->r_addend) & 0x8000)
2886 rel->r_addend += 0x10000;
2887 /* Fall through. */
2889 case R_M32R_16_RELA:
2890 case R_M32R_24_RELA:
2891 case R_M32R_32_RELA:
2892 case R_M32R_REL32:
2893 case R_M32R_10_PCREL_RELA:
2894 case R_M32R_18_PCREL_RELA:
2895 case R_M32R_26_PCREL_RELA:
2896 case R_M32R_HI16_ULO_RELA:
2897 case R_M32R_LO16_RELA:
2898 if (info->shared
2899 && r_symndx != 0
2900 && (input_section->flags & SEC_ALLOC) != 0
2901 && (( r_type != R_M32R_10_PCREL_RELA
2902 && r_type != R_M32R_18_PCREL_RELA
2903 && r_type != R_M32R_26_PCREL_RELA
2904 && r_type != R_M32R_REL32)
2905 || (h != NULL
2906 && h->dynindx != -1
2907 && (! info->symbolic
2908 || !h->def_regular))))
2910 Elf_Internal_Rela outrel;
2911 bfd_boolean skip, relocate;
2912 bfd_byte *loc;
2914 /* When generating a shared object, these relocations
2915 are copied into the output file to be resolved at run
2916 time. */
2917 if (sreloc == NULL)
2919 const char *name;
2921 name = (bfd_elf_string_from_elf_section
2922 (input_bfd,
2923 elf_elfheader (input_bfd)->e_shstrndx,
2924 elf_section_data (input_section)->rel_hdr.sh_name));
2925 if (name == NULL)
2926 return FALSE;
2928 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
2929 && strcmp (bfd_get_section_name (input_bfd,
2930 input_section),
2931 name + 5) == 0);
2933 sreloc = bfd_get_section_by_name (dynobj, name);
2934 BFD_ASSERT (sreloc != NULL);
2937 skip = FALSE;
2938 relocate = FALSE;
2940 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2941 info,
2942 input_section,
2943 rel->r_offset);
2944 if (outrel.r_offset == (bfd_vma) -1)
2945 skip = TRUE;
2946 else if (outrel.r_offset == (bfd_vma) -2)
2947 skip = relocate = TRUE;
2948 outrel.r_offset += (input_section->output_section->vma
2949 + input_section->output_offset);
2951 if (skip)
2952 memset (&outrel, 0, sizeof outrel);
2953 else if ( r_type == R_M32R_10_PCREL_RELA
2954 || r_type == R_M32R_18_PCREL_RELA
2955 || r_type == R_M32R_26_PCREL_RELA
2956 || r_type == R_M32R_REL32)
2958 BFD_ASSERT (h != NULL && h->dynindx != -1);
2959 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2960 outrel.r_addend = rel->r_addend;
2962 else
2964 /* h->dynindx may be -1 if this symbol was marked to
2965 become local. */
2966 if (h == NULL
2967 || ((info->symbolic || h->dynindx == -1)
2968 && h->def_regular))
2970 relocate = TRUE;
2971 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2972 outrel.r_addend = relocation + rel->r_addend;
2974 else
2976 BFD_ASSERT (h->dynindx != -1);
2977 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2978 outrel.r_addend = relocation + rel->r_addend;
2982 loc = sreloc->contents;
2983 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2984 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2985 ++sreloc->reloc_count;
2987 /* If this reloc is against an external symbol, we do
2988 not want to fiddle with the addend. Otherwise, we
2989 need to include the symbol value so that it becomes
2990 an addend for the dynamic reloc. */
2991 if (! relocate)
2992 continue;
2993 break;
2995 else if (r_type != R_M32R_10_PCREL_RELA)
2996 break;
2997 /* Fall through. */
2999 case (int) R_M32R_10_PCREL :
3000 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
3001 contents, offset,
3002 sec, relocation, addend);
3003 goto check_reloc;
3005 case (int) R_M32R_HI16_SLO :
3006 case (int) R_M32R_HI16_ULO :
3008 Elf_Internal_Rela *lorel;
3010 /* We allow an arbitrary number of HI16 relocs before the
3011 LO16 reloc. This permits gcc to emit the HI and LO relocs
3012 itself. */
3013 for (lorel = rel + 1;
3014 (lorel < relend
3015 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
3016 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3017 lorel++)
3018 continue;
3019 if (lorel < relend
3020 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3022 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3023 contents, relocation + addend);
3024 r = bfd_reloc_ok;
3026 else
3027 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3028 contents, offset,
3029 relocation, addend);
3032 goto check_reloc;
3034 case (int) R_M32R_SDA16_RELA:
3035 case (int) R_M32R_SDA16 :
3037 const char *name;
3039 BFD_ASSERT (sec != NULL);
3040 name = bfd_get_section_name (abfd, sec);
3042 if ( strcmp (name, ".sdata") == 0
3043 || strcmp (name, ".sbss") == 0
3044 || strcmp (name, ".scommon") == 0)
3046 bfd_vma sda_base;
3047 bfd *out_bfd = sec->output_section->owner;
3049 r = m32r_elf_final_sda_base (out_bfd, info,
3050 &errmsg,
3051 &sda_base);
3052 if (r != bfd_reloc_ok)
3054 ret = FALSE;
3055 goto check_reloc;
3058 /* At this point `relocation' contains the object's
3059 address. */
3060 relocation -= sda_base;
3061 /* Now it contains the offset from _SDA_BASE_. */
3063 else
3065 (*_bfd_error_handler)
3066 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3067 input_bfd,
3068 sec,
3069 sym_name,
3070 m32r_elf_howto_table[(int) r_type].name);
3071 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3072 ret = FALSE;
3073 continue;
3076 /* Fall through. */
3078 default : /* OLD_M32R_RELOC */
3080 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3081 contents, offset,
3082 relocation, addend);
3083 goto check_reloc;
3086 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3087 contents, rel->r_offset,
3088 relocation, rel->r_addend);
3092 check_reloc:
3094 if (r != bfd_reloc_ok)
3096 /* FIXME: This should be generic enough to go in a utility. */
3097 const char *name;
3099 if (h != NULL)
3100 name = h->root.root.string;
3101 else
3103 name = (bfd_elf_string_from_elf_section
3104 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3105 if (name == NULL || *name == '\0')
3106 name = bfd_section_name (input_bfd, sec);
3109 if (errmsg != NULL)
3110 goto common_error;
3112 switch (r)
3114 case bfd_reloc_overflow:
3115 if (! ((*info->callbacks->reloc_overflow)
3116 (info, (h ? &h->root : NULL), name, howto->name,
3117 (bfd_vma) 0, input_bfd, input_section, offset)))
3118 return FALSE;
3119 break;
3121 case bfd_reloc_undefined:
3122 if (! ((*info->callbacks->undefined_symbol)
3123 (info, name, input_bfd, input_section,
3124 offset, TRUE)))
3125 return FALSE;
3126 break;
3128 case bfd_reloc_outofrange:
3129 errmsg = _("internal error: out of range error");
3130 goto common_error;
3132 case bfd_reloc_notsupported:
3133 errmsg = _("internal error: unsupported relocation error");
3134 goto common_error;
3136 case bfd_reloc_dangerous:
3137 errmsg = _("internal error: dangerous error");
3138 goto common_error;
3140 default:
3141 errmsg = _("internal error: unknown error");
3142 /* fall through */
3144 common_error:
3145 if (!((*info->callbacks->warning)
3146 (info, errmsg, name, input_bfd, input_section,
3147 offset)))
3148 return FALSE;
3149 break;
3154 return ret;
3157 /* Finish up dynamic symbol handling. We set the contents of various
3158 dynamic sections here. */
3160 static bfd_boolean
3161 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3162 struct bfd_link_info *info,
3163 struct elf_link_hash_entry *h,
3164 Elf_Internal_Sym *sym)
3166 struct elf_m32r_link_hash_table *htab;
3167 bfd *dynobj;
3168 bfd_byte *loc;
3170 #ifdef DEBUG_PIC
3171 printf ("m32r_elf_finish_dynamic_symbol()\n");
3172 #endif
3174 htab = m32r_elf_hash_table (info);
3175 dynobj = htab->root.dynobj;
3177 if (h->plt.offset != (bfd_vma) -1)
3179 asection *splt;
3180 asection *sgot;
3181 asection *srela;
3183 bfd_vma plt_index;
3184 bfd_vma got_offset;
3185 Elf_Internal_Rela rela;
3187 /* This symbol has an entry in the procedure linkage table. Set
3188 it up. */
3190 BFD_ASSERT (h->dynindx != -1);
3192 splt = htab->splt;
3193 sgot = htab->sgotplt;
3194 srela = htab->srelplt;
3195 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3197 /* Get the index in the procedure linkage table which
3198 corresponds to this symbol. This is the index of this symbol
3199 in all the symbols for which we are making plt entries. The
3200 first entry in the procedure linkage table is reserved. */
3201 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3203 /* Get the offset into the .got table of the entry that
3204 corresponds to this function. Each .got entry is 4 bytes.
3205 The first three are reserved. */
3206 got_offset = (plt_index + 3) * 4;
3208 /* Fill in the entry in the procedure linkage table. */
3209 if (! info->shared)
3211 bfd_put_32 (output_bfd,
3212 (PLT_ENTRY_WORD0b
3213 + (((sgot->output_section->vma
3214 + sgot->output_offset
3215 + got_offset) >> 16) & 0xffff)),
3216 splt->contents + h->plt.offset);
3217 bfd_put_32 (output_bfd,
3218 (PLT_ENTRY_WORD1b
3219 + ((sgot->output_section->vma
3220 + sgot->output_offset
3221 + got_offset) & 0xffff)),
3222 splt->contents + h->plt.offset + 4);
3223 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3224 splt->contents + h->plt.offset + 8);
3225 bfd_put_32 (output_bfd,
3226 (PLT_ENTRY_WORD3
3227 + plt_index * sizeof (Elf32_External_Rela)),
3228 splt->contents + h->plt.offset + 12);
3229 bfd_put_32 (output_bfd,
3230 (PLT_ENTRY_WORD4
3231 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3232 splt->contents + h->plt.offset + 16);
3234 else
3236 bfd_put_32 (output_bfd,
3237 PLT_ENTRY_WORD0 + got_offset,
3238 splt->contents + h->plt.offset);
3239 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3240 splt->contents + h->plt.offset + 4);
3241 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3242 splt->contents + h->plt.offset + 8);
3243 bfd_put_32 (output_bfd,
3244 (PLT_ENTRY_WORD3
3245 + plt_index * sizeof (Elf32_External_Rela)),
3246 splt->contents + h->plt.offset + 12);
3247 bfd_put_32 (output_bfd,
3248 (PLT_ENTRY_WORD4
3249 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3250 splt->contents + h->plt.offset + 16);
3253 /* Fill in the entry in the global offset table. */
3254 bfd_put_32 (output_bfd,
3255 (splt->output_section->vma
3256 + splt->output_offset
3257 + h->plt.offset
3258 + 12), /* same offset */
3259 sgot->contents + got_offset);
3261 /* Fill in the entry in the .rela.plt section. */
3262 rela.r_offset = (sgot->output_section->vma
3263 + sgot->output_offset
3264 + got_offset);
3265 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3266 rela.r_addend = 0;
3267 loc = srela->contents;
3268 loc += plt_index * sizeof (Elf32_External_Rela);
3269 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3271 if (!h->def_regular)
3273 /* Mark the symbol as undefined, rather than as defined in
3274 the .plt section. Leave the value alone. */
3275 sym->st_shndx = SHN_UNDEF;
3279 if (h->got.offset != (bfd_vma) -1)
3281 asection *sgot;
3282 asection *srela;
3283 Elf_Internal_Rela rela;
3285 /* This symbol has an entry in the global offset table. Set it
3286 up. */
3288 sgot = htab->sgot;
3289 srela = htab->srelgot;
3290 BFD_ASSERT (sgot != NULL && srela != NULL);
3292 rela.r_offset = (sgot->output_section->vma
3293 + sgot->output_offset
3294 + (h->got.offset &~ 1));
3296 /* If this is a -Bsymbolic link, and the symbol is defined
3297 locally, we just want to emit a RELATIVE reloc. Likewise if
3298 the symbol was forced to be local because of a version file.
3299 The entry in the global offset table will already have been
3300 initialized in the relocate_section function. */
3301 if (info->shared
3302 && (info->symbolic
3303 || h->dynindx == -1
3304 || h->forced_local)
3305 && h->def_regular)
3307 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3308 rela.r_addend = (h->root.u.def.value
3309 + h->root.u.def.section->output_section->vma
3310 + h->root.u.def.section->output_offset);
3312 else
3314 BFD_ASSERT ((h->got.offset & 1) == 0);
3315 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3316 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3317 rela.r_addend = 0;
3320 loc = srela->contents;
3321 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3322 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3323 ++srela->reloc_count;
3326 if (h->needs_copy)
3328 asection *s;
3329 Elf_Internal_Rela rela;
3331 /* This symbols needs a copy reloc. Set it up. */
3333 BFD_ASSERT (h->dynindx != -1
3334 && (h->root.type == bfd_link_hash_defined
3335 || h->root.type == bfd_link_hash_defweak));
3337 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3338 ".rela.bss");
3339 BFD_ASSERT (s != NULL);
3341 rela.r_offset = (h->root.u.def.value
3342 + h->root.u.def.section->output_section->vma
3343 + h->root.u.def.section->output_offset);
3344 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3345 rela.r_addend = 0;
3346 loc = s->contents;
3347 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3348 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3349 ++s->reloc_count;
3352 /* Mark some specially defined symbols as absolute. */
3353 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3354 || h == htab->root.hgot)
3355 sym->st_shndx = SHN_ABS;
3357 return TRUE;
3361 /* Finish up the dynamic sections. */
3363 static bfd_boolean
3364 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3365 struct bfd_link_info *info)
3367 struct elf_m32r_link_hash_table *htab;
3368 bfd *dynobj;
3369 asection *sdyn;
3370 asection *sgot;
3372 #ifdef DEBUG_PIC
3373 printf ("m32r_elf_finish_dynamic_sections()\n");
3374 #endif
3376 htab = m32r_elf_hash_table (info);
3377 dynobj = htab->root.dynobj;
3379 sgot = htab->sgotplt;
3380 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3382 if (htab->root.dynamic_sections_created)
3384 asection *splt;
3385 Elf32_External_Dyn *dyncon, *dynconend;
3387 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3389 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3390 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3392 for (; dyncon < dynconend; dyncon++)
3394 Elf_Internal_Dyn dyn;
3395 const char *name;
3396 asection *s;
3398 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3400 switch (dyn.d_tag)
3402 default:
3403 break;
3405 case DT_PLTGOT:
3406 name = ".got";
3407 s = htab->sgot->output_section;
3408 goto get_vma;
3409 case DT_JMPREL:
3410 name = ".rela.plt";
3411 s = htab->srelplt->output_section;
3412 get_vma:
3413 BFD_ASSERT (s != NULL);
3414 dyn.d_un.d_ptr = s->vma;
3415 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3416 break;
3418 case DT_PLTRELSZ:
3419 s = htab->srelplt->output_section;
3420 BFD_ASSERT (s != NULL);
3421 dyn.d_un.d_val = s->size;
3422 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3423 break;
3425 case DT_RELASZ:
3426 /* My reading of the SVR4 ABI indicates that the
3427 procedure linkage table relocs (DT_JMPREL) should be
3428 included in the overall relocs (DT_RELA). This is
3429 what Solaris does. However, UnixWare can not handle
3430 that case. Therefore, we override the DT_RELASZ entry
3431 here to make it not include the JMPREL relocs. Since
3432 the linker script arranges for .rela.plt to follow all
3433 other relocation sections, we don't have to worry
3434 about changing the DT_RELA entry. */
3435 if (htab->srelplt != NULL)
3437 s = htab->srelplt->output_section;
3438 dyn.d_un.d_val -= s->size;
3440 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3441 break;
3445 /* Fill in the first entry in the procedure linkage table. */
3446 splt = htab->splt;
3447 if (splt && splt->size > 0)
3449 if (info->shared)
3451 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3452 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3453 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3454 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3455 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3457 else
3459 unsigned long addr;
3460 /* addr = .got + 4 */
3461 addr = sgot->output_section->vma + sgot->output_offset + 4;
3462 bfd_put_32 (output_bfd,
3463 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3464 splt->contents);
3465 bfd_put_32 (output_bfd,
3466 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3467 splt->contents + 4);
3468 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3469 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3470 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3473 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3474 PLT_ENTRY_SIZE;
3478 /* Fill in the first three entries in the global offset table. */
3479 if (sgot && sgot->size > 0)
3481 if (sdyn == NULL)
3482 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3483 else
3484 bfd_put_32 (output_bfd,
3485 sdyn->output_section->vma + sdyn->output_offset,
3486 sgot->contents);
3487 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3488 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3490 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3493 return TRUE;
3497 /* Set the right machine number. */
3499 static bfd_boolean
3500 m32r_elf_object_p (bfd *abfd)
3502 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3504 default:
3505 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3506 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3507 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3509 return TRUE;
3512 /* Store the machine number in the flags field. */
3514 static void
3515 m32r_elf_final_write_processing (bfd *abfd,
3516 bfd_boolean linker ATTRIBUTE_UNUSED)
3518 unsigned long val;
3520 switch (bfd_get_mach (abfd))
3522 default:
3523 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3524 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3525 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3528 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3529 elf_elfheader (abfd)->e_flags |= val;
3532 /* Function to keep M32R specific file flags. */
3534 static bfd_boolean
3535 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3537 BFD_ASSERT (!elf_flags_init (abfd)
3538 || elf_elfheader (abfd)->e_flags == flags);
3540 elf_elfheader (abfd)->e_flags = flags;
3541 elf_flags_init (abfd) = TRUE;
3542 return TRUE;
3545 /* Merge backend specific data from an object file to the output
3546 object file when linking. */
3548 static bfd_boolean
3549 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3551 flagword out_flags;
3552 flagword in_flags;
3554 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3555 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3556 return TRUE;
3558 in_flags = elf_elfheader (ibfd)->e_flags;
3559 out_flags = elf_elfheader (obfd)->e_flags;
3561 if (! elf_flags_init (obfd))
3563 /* If the input is the default architecture then do not
3564 bother setting the flags for the output architecture,
3565 instead allow future merges to do this. If no future
3566 merges ever set these flags then they will retain their
3567 unitialised values, which surprise surprise, correspond
3568 to the default values. */
3569 if (bfd_get_arch_info (ibfd)->the_default)
3570 return TRUE;
3572 elf_flags_init (obfd) = TRUE;
3573 elf_elfheader (obfd)->e_flags = in_flags;
3575 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3576 && bfd_get_arch_info (obfd)->the_default)
3577 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3578 bfd_get_mach (ibfd));
3580 return TRUE;
3583 /* Check flag compatibility. */
3584 if (in_flags == out_flags)
3585 return TRUE;
3587 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3589 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3590 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3591 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3593 (*_bfd_error_handler)
3594 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3596 bfd_set_error (bfd_error_bad_value);
3597 return FALSE;
3601 return TRUE;
3604 /* Display the flags field. */
3606 static bfd_boolean
3607 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3609 FILE * file = (FILE *) ptr;
3611 BFD_ASSERT (abfd != NULL && ptr != NULL);
3613 _bfd_elf_print_private_bfd_data (abfd, ptr);
3615 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3617 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3619 default:
3620 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3621 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3622 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3625 fputc ('\n', file);
3627 return TRUE;
3630 static asection *
3631 m32r_elf_gc_mark_hook (asection *sec,
3632 struct bfd_link_info *info,
3633 Elf_Internal_Rela *rel,
3634 struct elf_link_hash_entry *h,
3635 Elf_Internal_Sym *sym)
3637 if (h != NULL)
3638 switch (ELF32_R_TYPE (rel->r_info))
3640 case R_M32R_GNU_VTINHERIT:
3641 case R_M32R_GNU_VTENTRY:
3642 case R_M32R_RELA_GNU_VTINHERIT:
3643 case R_M32R_RELA_GNU_VTENTRY:
3644 return NULL;
3647 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3650 static bfd_boolean
3651 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3652 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3653 asection *sec ATTRIBUTE_UNUSED,
3654 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3656 /* Update the got entry reference counts for the section being removed. */
3657 Elf_Internal_Shdr *symtab_hdr;
3658 struct elf_link_hash_entry **sym_hashes;
3659 bfd_signed_vma *local_got_refcounts;
3660 const Elf_Internal_Rela *rel, *relend;
3662 elf_section_data (sec)->local_dynrel = NULL;
3664 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3665 sym_hashes = elf_sym_hashes (abfd);
3666 local_got_refcounts = elf_local_got_refcounts (abfd);
3668 relend = relocs + sec->reloc_count;
3669 for (rel = relocs; rel < relend; rel++)
3671 unsigned long r_symndx;
3672 struct elf_link_hash_entry *h = NULL;
3674 r_symndx = ELF32_R_SYM (rel->r_info);
3675 if (r_symndx >= symtab_hdr->sh_info)
3677 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3678 while (h->root.type == bfd_link_hash_indirect
3679 || h->root.type == bfd_link_hash_warning)
3680 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3683 switch (ELF32_R_TYPE (rel->r_info))
3685 case R_M32R_GOT16_HI_ULO:
3686 case R_M32R_GOT16_HI_SLO:
3687 case R_M32R_GOT16_LO:
3688 case R_M32R_GOTOFF:
3689 case R_M32R_GOTOFF_HI_ULO:
3690 case R_M32R_GOTOFF_HI_SLO:
3691 case R_M32R_GOTOFF_LO:
3692 case R_M32R_GOT24:
3693 case R_M32R_GOTPC_HI_ULO:
3694 case R_M32R_GOTPC_HI_SLO:
3695 case R_M32R_GOTPC_LO:
3696 case R_M32R_GOTPC24:
3697 if (h != NULL)
3699 if (h->got.refcount > 0)
3700 h->got.refcount--;
3702 else
3704 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3705 local_got_refcounts[r_symndx]--;
3707 break;
3709 case R_M32R_16_RELA:
3710 case R_M32R_24_RELA:
3711 case R_M32R_32_RELA:
3712 case R_M32R_REL32:
3713 case R_M32R_HI16_ULO_RELA:
3714 case R_M32R_HI16_SLO_RELA:
3715 case R_M32R_LO16_RELA:
3716 case R_M32R_SDA16_RELA:
3717 case R_M32R_10_PCREL_RELA:
3718 case R_M32R_18_PCREL_RELA:
3719 case R_M32R_26_PCREL_RELA:
3720 if (h != NULL)
3722 struct elf_m32r_link_hash_entry *eh;
3723 struct elf_m32r_dyn_relocs **pp;
3724 struct elf_m32r_dyn_relocs *p;
3726 if (!info->shared && h->plt.refcount > 0)
3727 h->plt.refcount -= 1;
3729 eh = (struct elf_m32r_link_hash_entry *) h;
3731 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3732 if (p->sec == sec)
3734 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3735 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3736 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3737 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3738 p->pc_count -= 1;
3739 p->count -= 1;
3740 if (p->count == 0)
3741 *pp = p->next;
3742 break;
3745 break;
3747 case R_M32R_26_PLTREL:
3748 if (h != NULL)
3750 if (h->plt.refcount > 0)
3751 h->plt.refcount--;
3753 break;
3755 default:
3756 break;
3760 return TRUE;
3763 /* Look through the relocs for a section during the first phase.
3764 Since we don't do .gots or .plts, we just need to consider the
3765 virtual table relocs for gc. */
3767 static bfd_boolean
3768 m32r_elf_check_relocs (bfd *abfd,
3769 struct bfd_link_info *info,
3770 asection *sec,
3771 const Elf_Internal_Rela *relocs)
3773 Elf_Internal_Shdr *symtab_hdr;
3774 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3775 const Elf_Internal_Rela *rel;
3776 const Elf_Internal_Rela *rel_end;
3777 struct elf_m32r_link_hash_table *htab;
3778 bfd *dynobj;
3779 bfd_vma *local_got_offsets;
3780 asection *sgot, *srelgot, *sreloc;
3782 if (info->relocatable)
3783 return TRUE;
3785 sgot = srelgot = sreloc = NULL;
3787 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3788 sym_hashes = elf_sym_hashes (abfd);
3789 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3790 if (!elf_bad_symtab (abfd))
3791 sym_hashes_end -= symtab_hdr->sh_info;
3793 htab = m32r_elf_hash_table (info);
3794 dynobj = htab->root.dynobj;
3795 local_got_offsets = elf_local_got_offsets (abfd);
3797 rel_end = relocs + sec->reloc_count;
3798 for (rel = relocs; rel < rel_end; rel++)
3800 int r_type;
3801 struct elf_link_hash_entry *h;
3802 unsigned long r_symndx;
3804 r_symndx = ELF32_R_SYM (rel->r_info);
3805 r_type = ELF32_R_TYPE (rel->r_info);
3806 if (r_symndx < symtab_hdr->sh_info)
3807 h = NULL;
3808 else
3810 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3811 while (h->root.type == bfd_link_hash_indirect
3812 || h->root.type == bfd_link_hash_warning)
3813 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3816 /* Some relocs require a global offset table. */
3817 if (htab->sgot == NULL)
3819 switch (r_type)
3821 case R_M32R_GOT16_HI_ULO:
3822 case R_M32R_GOT16_HI_SLO:
3823 case R_M32R_GOTOFF:
3824 case R_M32R_GOTOFF_HI_ULO:
3825 case R_M32R_GOTOFF_HI_SLO:
3826 case R_M32R_GOTOFF_LO:
3827 case R_M32R_GOT16_LO:
3828 case R_M32R_GOTPC24:
3829 case R_M32R_GOTPC_HI_ULO:
3830 case R_M32R_GOTPC_HI_SLO:
3831 case R_M32R_GOTPC_LO:
3832 case R_M32R_GOT24:
3833 if (dynobj == NULL)
3834 htab->root.dynobj = dynobj = abfd;
3835 if (! create_got_section (dynobj, info))
3836 return FALSE;
3837 break;
3839 default:
3840 break;
3844 switch (r_type)
3846 case R_M32R_GOT16_HI_ULO:
3847 case R_M32R_GOT16_HI_SLO:
3848 case R_M32R_GOT16_LO:
3849 case R_M32R_GOT24:
3851 if (h != NULL)
3852 h->got.refcount += 1;
3853 else
3855 bfd_signed_vma *local_got_refcounts;
3857 /* This is a global offset table entry for a local
3858 symbol. */
3859 local_got_refcounts = elf_local_got_refcounts (abfd);
3860 if (local_got_refcounts == NULL)
3862 bfd_size_type size;
3864 size = symtab_hdr->sh_info;
3865 size *= sizeof (bfd_signed_vma);
3866 local_got_refcounts = bfd_zalloc (abfd, size);
3867 if (local_got_refcounts == NULL)
3868 return FALSE;
3869 elf_local_got_refcounts (abfd) = local_got_refcounts;
3871 local_got_refcounts[r_symndx] += 1;
3873 break;
3875 case R_M32R_26_PLTREL:
3876 /* This symbol requires a procedure linkage table entry. We
3877 actually build the entry in adjust_dynamic_symbol,
3878 because this might be a case of linking PIC code without
3879 linking in any dynamic objects, in which case we don't
3880 need to generate a procedure linkage table after all. */
3882 /* If this is a local symbol, we resolve it directly without
3883 creating a procedure linkage table entry. */
3884 if (h == NULL)
3885 continue;
3887 if (h->forced_local)
3888 break;
3890 h->needs_plt = 1;
3891 h->plt.refcount += 1;
3892 break;
3894 case R_M32R_16_RELA:
3895 case R_M32R_24_RELA:
3896 case R_M32R_32_RELA:
3897 case R_M32R_REL32:
3898 case R_M32R_HI16_ULO_RELA:
3899 case R_M32R_HI16_SLO_RELA:
3900 case R_M32R_LO16_RELA:
3901 case R_M32R_SDA16_RELA:
3902 case R_M32R_10_PCREL_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_10_PCREL_RELA
3936 && r_type != R_M32R_REL32)
3937 || (h != NULL
3938 && (! info->symbolic
3939 || h->root.type == bfd_link_hash_defweak
3940 || !h->def_regular))))
3941 || (!info->shared
3942 && (sec->flags & SEC_ALLOC) != 0
3943 && h != NULL
3944 && (h->root.type == bfd_link_hash_defweak
3945 || !h->def_regular)))
3947 struct elf_m32r_dyn_relocs *p;
3948 struct elf_m32r_dyn_relocs **head;
3950 if (dynobj == NULL)
3951 htab->root.dynobj = dynobj = abfd;
3953 /* When creating a shared object, we must copy these
3954 relocs into the output file. We create a reloc
3955 section in dynobj and make room for the reloc. */
3956 if (sreloc == NULL)
3958 const char *name;
3960 name = (bfd_elf_string_from_elf_section
3961 (abfd,
3962 elf_elfheader (abfd)->e_shstrndx,
3963 elf_section_data (sec)->rel_hdr.sh_name));
3964 if (name == NULL)
3965 return FALSE;
3967 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3968 && strcmp (bfd_get_section_name (abfd, sec),
3969 name + 5) == 0);
3971 sreloc = bfd_get_section_by_name (dynobj, name);
3972 if (sreloc == NULL)
3974 flagword flags;
3976 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3977 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3978 if ((sec->flags & SEC_ALLOC) != 0)
3979 flags |= SEC_ALLOC | SEC_LOAD;
3980 sreloc = bfd_make_section_with_flags (dynobj,
3981 name,
3982 flags);
3983 if (sreloc == NULL
3984 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
3985 return FALSE;
3987 elf_section_data (sec)->sreloc = sreloc;
3990 /* If this is a global symbol, we count the number of
3991 relocations we need for this symbol. */
3992 if (h != NULL)
3993 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3994 else
3996 asection *s;
3997 void *vpp;
3999 /* Track dynamic relocs needed for local syms too. */
4000 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4001 sec, r_symndx);
4002 if (s == NULL)
4003 return FALSE;
4005 vpp = &elf_section_data (s)->local_dynrel;
4006 head = (struct elf_m32r_dyn_relocs **) vpp;
4009 p = *head;
4010 if (p == NULL || p->sec != sec)
4012 bfd_size_type amt = sizeof (*p);
4014 p = bfd_alloc (dynobj, amt);
4015 if (p == NULL)
4016 return FALSE;
4017 p->next = *head;
4018 *head = p;
4019 p->sec = sec;
4020 p->count = 0;
4021 p->pc_count = 0;
4024 p->count += 1;
4025 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4026 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
4027 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
4028 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
4029 p->pc_count += 1;
4031 break;
4033 /* This relocation describes the C++ object vtable hierarchy.
4034 Reconstruct it for later use during GC. */
4035 case R_M32R_RELA_GNU_VTINHERIT:
4036 case R_M32R_GNU_VTINHERIT:
4037 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4038 return FALSE;
4039 break;
4041 /* This relocation describes which C++ vtable entries are actually
4042 used. Record for later use during GC. */
4043 case R_M32R_GNU_VTENTRY:
4044 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4045 return FALSE;
4046 break;
4047 case R_M32R_RELA_GNU_VTENTRY:
4048 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4049 return FALSE;
4050 break;
4054 return TRUE;
4057 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4059 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4060 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4061 { NULL, 0, 0, 0, 0 }
4064 static bfd_boolean
4065 m32r_elf_fake_sections (bfd *abfd,
4066 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4067 asection *sec)
4069 const char *name;
4071 name = bfd_get_section_name (abfd, sec);
4073 /* The generic elf_fake_sections will set up REL_HDR using the
4074 default kind of relocations. But, we may actually need both
4075 kinds of relocations, so we set up the second header here.
4077 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4078 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4079 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4080 of the resulting empty .rela.<section> sections starts with
4081 sh_offset == object size, and ld doesn't allow that. While the check
4082 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4083 avoided by not emitting those useless sections in the first place. */
4084 if ((sec->flags & SEC_RELOC) != 0)
4086 struct bfd_elf_section_data *esd;
4087 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4089 esd = elf_section_data (sec);
4090 BFD_ASSERT (esd->rel_hdr2 == NULL);
4091 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4092 if (!esd->rel_hdr2)
4093 return FALSE;
4094 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4095 !sec->use_rela_p);
4098 return TRUE;
4101 static enum elf_reloc_type_class
4102 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4104 switch ((int) ELF32_R_TYPE (rela->r_info))
4106 case R_M32R_RELATIVE: return reloc_class_relative;
4107 case R_M32R_JMP_SLOT: return reloc_class_plt;
4108 case R_M32R_COPY: return reloc_class_copy;
4109 default: return reloc_class_normal;
4113 #define ELF_ARCH bfd_arch_m32r
4114 #define ELF_MACHINE_CODE EM_M32R
4115 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4116 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4118 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4119 #define TARGET_BIG_NAME "elf32-m32r"
4120 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4121 #define TARGET_LITTLE_NAME "elf32-m32rle"
4123 #define elf_info_to_howto m32r_info_to_howto
4124 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4125 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4126 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4127 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4128 #define elf_backend_relocate_section m32r_elf_relocate_section
4129 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4130 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4131 #define elf_backend_check_relocs m32r_elf_check_relocs
4133 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4134 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4135 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4136 #define elf_backend_omit_section_dynsym \
4137 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4138 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4139 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4140 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4141 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4142 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4144 #define elf_backend_can_gc_sections 1
4145 /*#if !USE_REL
4146 #define elf_backend_rela_normal 1
4147 #endif*/
4148 #define elf_backend_can_refcount 1
4149 #define elf_backend_want_got_plt 1
4150 #define elf_backend_plt_readonly 1
4151 #define elf_backend_want_plt_sym 0
4152 #define elf_backend_got_header_size 12
4154 #define elf_backend_may_use_rel_p 1
4155 #ifdef USE_M32R_OLD_RELOC
4156 #define elf_backend_default_use_rela_p 0
4157 #define elf_backend_may_use_rela_p 0
4158 #else
4159 #define elf_backend_default_use_rela_p 1
4160 #define elf_backend_may_use_rela_p 1
4161 #define elf_backend_fake_sections m32r_elf_fake_sections
4162 #endif
4164 #define elf_backend_object_p m32r_elf_object_p
4165 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4166 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4167 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4168 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4169 #define elf_backend_special_sections m32r_elf_special_sections
4171 #include "elf32-target.h"
4173 #undef ELF_MAXPAGESIZE
4174 #define ELF_MAXPAGESIZE 0x1000
4176 #undef TARGET_BIG_SYM
4177 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4178 #undef TARGET_BIG_NAME
4179 #define TARGET_BIG_NAME "elf32-m32r-linux"
4180 #undef TARGET_LITTLE_SYM
4181 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4182 #undef TARGET_LITTLE_NAME
4183 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4184 #undef elf32_bed
4185 #define elf32_bed elf32_m32r_lin_bed
4187 #include "elf32-target.h"