* lexsup.c: Rename --add-needed to --copy-dt-needed-entries.
[binutils/dougsmingw.git] / bfd / elf32-m32r.c
blobbd2fd993f15343a91b58fb137849cc9f309ecd13
1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2008, 2009 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 3 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,
20 MA 02110-1301, USA. */
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "libbfd.h"
25 #include "elf-bfd.h"
26 #include "elf/m32r.h"
28 #define NOP_INSN 0x7000
29 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
31 /* Use REL instead of RELA to save space.
32 This only saves space in libraries and object files, but perhaps
33 relocs will be put in ROM? All in all though, REL relocs are a pain
34 to work with. */
35 /* #define USE_REL 1
37 #ifndef USE_REL
38 #define USE_REL 0
39 #endif */
40 /* Use RELA. But use REL to link old objects for backwords compatibility. */
42 /* Functions for the M32R ELF linker. */
44 /* The name of the dynamic interpreter. This is put in the .interp
45 section. */
47 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
49 /* The nop opcode we use. */
51 #define M32R_NOP 0x7000f000
53 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
55 /* The size in bytes of an entry in the procedure linkage table. */
57 #define PLT_ENTRY_SIZE 20
58 #define PLT_HEADER_SIZE 20
60 /* The first one entries in a procedure linkage table are reserved,
61 and the initial contents are unimportant (we zero them out).
62 Subsequent entries look like this. */
64 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
65 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
66 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
67 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
68 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
70 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
71 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
72 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
73 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
74 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
76 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
77 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
78 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
79 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
80 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
81 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
82 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
85 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
87 static bfd_reloc_status_type
88 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
89 reloc_howto_type *howto,
90 asection *input_section,
91 bfd_byte *data,
92 bfd_vma offset,
93 asection *symbol_section ATTRIBUTE_UNUSED,
94 bfd_vma symbol_value,
95 bfd_vma addend)
97 bfd_signed_vma relocation;
98 unsigned long x;
99 bfd_reloc_status_type status;
101 /* Sanity check the address (offset in section). */
102 if (offset > bfd_get_section_limit (abfd, input_section))
103 return bfd_reloc_outofrange;
105 relocation = symbol_value + addend;
106 /* Make it pc relative. */
107 relocation -= (input_section->output_section->vma
108 + input_section->output_offset);
109 /* These jumps mask off the lower two bits of the current address
110 before doing pcrel calculations. */
111 relocation -= (offset & -(bfd_vma) 4);
113 if (relocation < -0x200 || relocation > 0x1ff)
114 status = bfd_reloc_overflow;
115 else
116 status = bfd_reloc_ok;
118 x = bfd_get_16 (abfd, data + offset);
119 relocation >>= howto->rightshift;
120 relocation <<= howto->bitpos;
121 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
122 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
124 return status;
127 /* Handle the R_M32R_10_PCREL reloc. */
129 static bfd_reloc_status_type
130 m32r_elf_10_pcrel_reloc (bfd * abfd,
131 arelent * reloc_entry,
132 asymbol * symbol,
133 void * data,
134 asection * input_section,
135 bfd * output_bfd,
136 char ** error_message ATTRIBUTE_UNUSED)
138 /* This part is from bfd_elf_generic_reloc. */
139 if (output_bfd != NULL
140 && (symbol->flags & BSF_SECTION_SYM) == 0
141 && (! reloc_entry->howto->partial_inplace
142 || reloc_entry->addend == 0))
144 reloc_entry->address += input_section->output_offset;
145 return bfd_reloc_ok;
148 if (output_bfd != NULL)
149 /* FIXME: See bfd_perform_relocation. Is this right? */
150 return bfd_reloc_continue;
152 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
153 input_section,
154 data, reloc_entry->address,
155 symbol->section,
156 (symbol->value
157 + symbol->section->output_section->vma
158 + symbol->section->output_offset),
159 reloc_entry->addend);
162 /* Do generic partial_inplace relocation.
163 This is a local replacement for bfd_elf_generic_reloc. */
165 static bfd_reloc_status_type
166 m32r_elf_generic_reloc (bfd *input_bfd,
167 arelent *reloc_entry,
168 asymbol *symbol,
169 void * data,
170 asection *input_section,
171 bfd *output_bfd,
172 char **error_message ATTRIBUTE_UNUSED)
174 bfd_reloc_status_type ret;
175 bfd_vma relocation;
176 bfd_byte *inplace_address;
178 /* This part is from bfd_elf_generic_reloc.
179 If we're relocating, and this an external symbol, we don't want
180 to change anything. */
181 if (output_bfd != NULL
182 && (symbol->flags & BSF_SECTION_SYM) == 0
183 && reloc_entry->addend == 0)
185 reloc_entry->address += input_section->output_offset;
186 return bfd_reloc_ok;
189 /* Now do the reloc in the usual way.
190 ??? It would be nice to call bfd_elf_generic_reloc here,
191 but we have partial_inplace set. bfd_elf_generic_reloc will
192 pass the handling back to bfd_install_relocation which will install
193 a section relative addend which is wrong. */
195 /* Sanity check the address (offset in section). */
196 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
197 return bfd_reloc_outofrange;
199 ret = bfd_reloc_ok;
200 if (bfd_is_und_section (symbol->section)
201 && output_bfd == NULL)
202 ret = bfd_reloc_undefined;
204 if (bfd_is_com_section (symbol->section)
205 || output_bfd != NULL)
206 relocation = 0;
207 else
208 relocation = symbol->value;
210 /* Only do this for a final link. */
211 if (output_bfd == NULL)
213 relocation += symbol->section->output_section->vma;
214 relocation += symbol->section->output_offset;
217 relocation += reloc_entry->addend;
218 inplace_address = (bfd_byte *) data + reloc_entry->address;
220 #define DOIT(x) \
221 x = ( (x & ~reloc_entry->howto->dst_mask) | \
222 (((x & reloc_entry->howto->src_mask) + relocation) & \
223 reloc_entry->howto->dst_mask))
225 switch (reloc_entry->howto->size)
227 case 1:
229 short x = bfd_get_16 (input_bfd, inplace_address);
230 DOIT (x);
231 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
233 break;
234 case 2:
236 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
237 DOIT (x);
238 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
240 break;
241 default:
242 BFD_ASSERT (0);
245 if (output_bfd != NULL)
246 reloc_entry->address += input_section->output_offset;
248 return ret;
251 /* Handle the R_M32R_SDA16 reloc.
252 This reloc is used to compute the address of objects in the small data area
253 and to perform loads and stores from that area.
254 The lower 16 bits are sign extended and added to the register specified
255 in the instruction, which is assumed to point to _SDA_BASE_. */
257 static bfd_reloc_status_type
258 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
259 arelent *reloc_entry,
260 asymbol *symbol,
261 void * data ATTRIBUTE_UNUSED,
262 asection *input_section,
263 bfd *output_bfd,
264 char **error_message ATTRIBUTE_UNUSED)
266 /* This part is from bfd_elf_generic_reloc. */
267 if (output_bfd != NULL
268 && (symbol->flags & BSF_SECTION_SYM) == 0
269 && (! reloc_entry->howto->partial_inplace
270 || reloc_entry->addend == 0))
272 reloc_entry->address += input_section->output_offset;
273 return bfd_reloc_ok;
276 if (output_bfd != NULL)
277 /* FIXME: See bfd_perform_relocation. Is this right? */
278 return bfd_reloc_continue;
280 /* FIXME: not sure what to do here yet. But then again, the linker
281 may never call us. */
282 abort ();
286 /* Handle the R_M32R_HI16_[SU]LO relocs.
287 HI16_SLO is for the add3 and load/store with displacement instructions.
288 HI16_ULO is for the or3 instruction.
289 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
290 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
291 we must add one to the high 16 bytes (which will get subtracted off when
292 the low 16 bits are added).
293 These relocs have to be done in combination with an R_M32R_LO16 reloc
294 because there is a carry from the LO16 to the HI16. Here we just save
295 the information we need; we do the actual relocation when we see the LO16.
296 This code is copied from the elf32-mips.c. We also support an arbitrary
297 number of HI16 relocs to be associated with a single LO16 reloc. The
298 assembler sorts the relocs to ensure each HI16 immediately precedes its
299 LO16. However if there are multiple copies, the assembler may not find
300 the real LO16 so it picks the first one it finds. */
302 struct m32r_hi16
304 struct m32r_hi16 *next;
305 bfd_byte *addr;
306 bfd_vma addend;
309 /* FIXME: This should not be a static variable. */
311 static struct m32r_hi16 *m32r_hi16_list;
313 static bfd_reloc_status_type
314 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
315 arelent *reloc_entry,
316 asymbol *symbol,
317 void * data,
318 asection *input_section,
319 bfd *output_bfd,
320 char **error_message ATTRIBUTE_UNUSED)
322 bfd_reloc_status_type ret;
323 bfd_vma relocation;
324 struct m32r_hi16 *n;
326 /* This part is from bfd_elf_generic_reloc.
327 If we're relocating, and this an external symbol, we don't want
328 to change anything. */
329 if (output_bfd != NULL
330 && (symbol->flags & BSF_SECTION_SYM) == 0
331 && reloc_entry->addend == 0)
333 reloc_entry->address += input_section->output_offset;
334 return bfd_reloc_ok;
337 /* Sanity check the address (offset in section). */
338 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
339 return bfd_reloc_outofrange;
341 ret = bfd_reloc_ok;
342 if (bfd_is_und_section (symbol->section)
343 && output_bfd == NULL)
344 ret = bfd_reloc_undefined;
346 if (bfd_is_com_section (symbol->section))
347 relocation = 0;
348 else
349 relocation = symbol->value;
351 relocation += symbol->section->output_section->vma;
352 relocation += symbol->section->output_offset;
353 relocation += reloc_entry->addend;
355 /* Save the information, and let LO16 do the actual relocation. */
356 n = bfd_malloc ((bfd_size_type) sizeof *n);
357 if (n == NULL)
358 return bfd_reloc_outofrange;
359 n->addr = (bfd_byte *) data + reloc_entry->address;
360 n->addend = relocation;
361 n->next = m32r_hi16_list;
362 m32r_hi16_list = n;
364 if (output_bfd != NULL)
365 reloc_entry->address += input_section->output_offset;
367 return ret;
370 /* Handle an M32R ELF HI16 reloc. */
372 static void
373 m32r_elf_relocate_hi16 (bfd *input_bfd,
374 int type,
375 Elf_Internal_Rela *relhi,
376 Elf_Internal_Rela *rello,
377 bfd_byte *contents,
378 bfd_vma addend)
380 unsigned long insn;
381 bfd_vma addlo;
383 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
385 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
386 if (type == R_M32R_HI16_SLO)
387 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
388 else
389 addlo &= 0xffff;
391 addend += ((insn & 0xffff) << 16) + addlo;
393 /* Reaccount for sign extension of low part. */
394 if (type == R_M32R_HI16_SLO
395 && (addend & 0x8000) != 0)
396 addend += 0x10000;
398 bfd_put_32 (input_bfd,
399 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
400 contents + relhi->r_offset);
403 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
404 inplace relocation; this function exists in order to do the
405 R_M32R_HI16_[SU]LO relocation described above. */
407 static bfd_reloc_status_type
408 m32r_elf_lo16_reloc (bfd *input_bfd,
409 arelent *reloc_entry,
410 asymbol *symbol,
411 void * data,
412 asection *input_section,
413 bfd *output_bfd,
414 char **error_message)
416 /* This part is from bfd_elf_generic_reloc.
417 If we're relocating, and this an external symbol, we don't want
418 to change anything. */
419 if (output_bfd != NULL
420 && (symbol->flags & BSF_SECTION_SYM) == 0
421 && reloc_entry->addend == 0)
423 reloc_entry->address += input_section->output_offset;
424 return bfd_reloc_ok;
427 if (m32r_hi16_list != NULL)
429 struct m32r_hi16 *l;
431 l = m32r_hi16_list;
432 while (l != NULL)
434 unsigned long insn;
435 unsigned long val;
436 unsigned long vallo;
437 struct m32r_hi16 *next;
439 /* Do the HI16 relocation. Note that we actually don't need
440 to know anything about the LO16 itself, except where to
441 find the low 16 bits of the addend needed by the LO16. */
442 insn = bfd_get_32 (input_bfd, l->addr);
443 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
444 & 0xffff) ^ 0x8000) - 0x8000;
445 val = ((insn & 0xffff) << 16) + vallo;
446 val += l->addend;
448 /* Reaccount for sign extension of low part. */
449 if ((val & 0x8000) != 0)
450 val += 0x10000;
452 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
453 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
455 next = l->next;
456 free (l);
457 l = next;
460 m32r_hi16_list = NULL;
463 /* Now do the LO16 reloc in the usual way.
464 ??? It would be nice to call bfd_elf_generic_reloc here,
465 but we have partial_inplace set. bfd_elf_generic_reloc will
466 pass the handling back to bfd_install_relocation which will install
467 a section relative addend which is wrong. */
468 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
469 input_section, output_bfd, error_message);
473 static reloc_howto_type m32r_elf_howto_table[] =
475 /* This reloc does nothing. */
476 HOWTO (R_M32R_NONE, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 32, /* bitsize */
480 FALSE, /* pc_relative */
481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_M32R_NONE", /* name */
485 FALSE, /* partial_inplace */
486 0, /* src_mask */
487 0, /* dst_mask */
488 FALSE), /* pcrel_offset */
490 /* A 16 bit absolute relocation. */
491 HOWTO (R_M32R_16, /* type */
492 0, /* rightshift */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
494 16, /* bitsize */
495 FALSE, /* pc_relative */
496 0, /* bitpos */
497 complain_overflow_bitfield, /* complain_on_overflow */
498 m32r_elf_generic_reloc,/* special_function */
499 "R_M32R_16", /* name */
500 TRUE, /* partial_inplace */
501 0xffff, /* src_mask */
502 0xffff, /* dst_mask */
503 FALSE), /* pcrel_offset */
505 /* A 32 bit absolute relocation. */
506 HOWTO (R_M32R_32, /* type */
507 0, /* rightshift */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
509 32, /* bitsize */
510 FALSE, /* pc_relative */
511 0, /* bitpos */
512 complain_overflow_bitfield, /* complain_on_overflow */
513 m32r_elf_generic_reloc,/* special_function */
514 "R_M32R_32", /* name */
515 TRUE, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE), /* pcrel_offset */
520 /* A 24 bit address. */
521 HOWTO (R_M32R_24, /* type */
522 0, /* rightshift */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
524 24, /* bitsize */
525 FALSE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_unsigned, /* complain_on_overflow */
528 m32r_elf_generic_reloc,/* special_function */
529 "R_M32R_24", /* name */
530 TRUE, /* partial_inplace */
531 0xffffff, /* src_mask */
532 0xffffff, /* dst_mask */
533 FALSE), /* pcrel_offset */
535 /* An PC Relative 10-bit relocation, shifted by 2.
536 This reloc is complicated because relocations are relative to pc & -4.
537 i.e. branches in the right insn slot use the address of the left insn
538 slot for pc. */
539 /* ??? It's not clear whether this should have partial_inplace set or not.
540 Branch relaxing in the assembler can store the addend in the insn,
541 and if bfd_install_relocation gets called the addend may get added
542 again. */
543 HOWTO (R_M32R_10_PCREL, /* type */
544 2, /* rightshift */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
546 10, /* bitsize */
547 TRUE, /* pc_relative */
548 0, /* bitpos */
549 complain_overflow_signed, /* complain_on_overflow */
550 m32r_elf_10_pcrel_reloc, /* special_function */
551 "R_M32R_10_PCREL", /* name */
552 FALSE, /* partial_inplace */
553 0xff, /* src_mask */
554 0xff, /* dst_mask */
555 TRUE), /* pcrel_offset */
557 /* A relative 18 bit relocation, right shifted by 2. */
558 HOWTO (R_M32R_18_PCREL, /* type */
559 2, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 16, /* bitsize */
562 TRUE, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_M32R_18_PCREL", /* name */
567 FALSE, /* partial_inplace */
568 0xffff, /* src_mask */
569 0xffff, /* dst_mask */
570 TRUE), /* pcrel_offset */
572 /* A relative 26 bit relocation, right shifted by 2. */
573 /* ??? It's not clear whether this should have partial_inplace set or not.
574 Branch relaxing in the assembler can store the addend in the insn,
575 and if bfd_install_relocation gets called the addend may get added
576 again. */
577 HOWTO (R_M32R_26_PCREL, /* type */
578 2, /* rightshift */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
580 26, /* bitsize */
581 TRUE, /* pc_relative */
582 0, /* bitpos */
583 complain_overflow_signed, /* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_M32R_26_PCREL", /* name */
586 FALSE, /* partial_inplace */
587 0xffffff, /* src_mask */
588 0xffffff, /* dst_mask */
589 TRUE), /* pcrel_offset */
591 /* High 16 bits of address when lower 16 is or'd in. */
592 HOWTO (R_M32R_HI16_ULO, /* type */
593 16, /* rightshift */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
595 16, /* bitsize */
596 FALSE, /* pc_relative */
597 0, /* bitpos */
598 complain_overflow_dont, /* complain_on_overflow */
599 m32r_elf_hi16_reloc, /* special_function */
600 "R_M32R_HI16_ULO", /* name */
601 TRUE, /* partial_inplace */
602 0x0000ffff, /* src_mask */
603 0x0000ffff, /* dst_mask */
604 FALSE), /* pcrel_offset */
606 /* High 16 bits of address when lower 16 is added in. */
607 HOWTO (R_M32R_HI16_SLO, /* type */
608 16, /* rightshift */
609 2, /* size (0 = byte, 1 = short, 2 = long) */
610 16, /* bitsize */
611 FALSE, /* pc_relative */
612 0, /* bitpos */
613 complain_overflow_dont, /* complain_on_overflow */
614 m32r_elf_hi16_reloc, /* special_function */
615 "R_M32R_HI16_SLO", /* name */
616 TRUE, /* partial_inplace */
617 0x0000ffff, /* src_mask */
618 0x0000ffff, /* dst_mask */
619 FALSE), /* pcrel_offset */
621 /* Lower 16 bits of address. */
622 HOWTO (R_M32R_LO16, /* type */
623 0, /* rightshift */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
625 16, /* bitsize */
626 FALSE, /* pc_relative */
627 0, /* bitpos */
628 complain_overflow_dont, /* complain_on_overflow */
629 m32r_elf_lo16_reloc, /* special_function */
630 "R_M32R_LO16", /* name */
631 TRUE, /* partial_inplace */
632 0x0000ffff, /* src_mask */
633 0x0000ffff, /* dst_mask */
634 FALSE), /* pcrel_offset */
636 /* Small data area 16 bits offset. */
637 HOWTO (R_M32R_SDA16, /* type */
638 0, /* rightshift */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
640 16, /* bitsize */
641 FALSE, /* pc_relative */
642 0, /* bitpos */
643 complain_overflow_signed, /* complain_on_overflow */
644 m32r_elf_sda16_reloc, /* special_function */
645 "R_M32R_SDA16", /* name */
646 TRUE, /* partial_inplace */ /* FIXME: correct? */
647 0x0000ffff, /* src_mask */
648 0x0000ffff, /* dst_mask */
649 FALSE), /* pcrel_offset */
651 /* GNU extension to record C++ vtable hierarchy. */
652 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
653 0, /* rightshift */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
655 0, /* bitsize */
656 FALSE, /* pc_relative */
657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
659 NULL, /* special_function */
660 "R_M32R_GNU_VTINHERIT", /* name */
661 FALSE, /* partial_inplace */
662 0, /* src_mask */
663 0, /* dst_mask */
664 FALSE), /* pcrel_offset */
666 /* GNU extension to record C++ vtable member usage. */
667 HOWTO (R_M32R_GNU_VTENTRY, /* type */
668 0, /* rightshift */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
670 0, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
675 "R_M32R_GNU_VTENTRY", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 EMPTY_HOWTO (13),
682 EMPTY_HOWTO (14),
683 EMPTY_HOWTO (15),
684 EMPTY_HOWTO (16),
685 EMPTY_HOWTO (17),
686 EMPTY_HOWTO (18),
687 EMPTY_HOWTO (19),
688 EMPTY_HOWTO (20),
689 EMPTY_HOWTO (21),
690 EMPTY_HOWTO (22),
691 EMPTY_HOWTO (23),
692 EMPTY_HOWTO (24),
693 EMPTY_HOWTO (25),
694 EMPTY_HOWTO (26),
695 EMPTY_HOWTO (27),
696 EMPTY_HOWTO (28),
697 EMPTY_HOWTO (29),
698 EMPTY_HOWTO (30),
699 EMPTY_HOWTO (31),
700 EMPTY_HOWTO (32),
702 /* A 16 bit absolute relocation. */
703 HOWTO (R_M32R_16_RELA, /* type */
704 0, /* rightshift */
705 1, /* size (0 = byte, 1 = short, 2 = long) */
706 16, /* bitsize */
707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_bitfield, /* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
711 "R_M32R_16_RELA", /* name */
712 FALSE, /* partial_inplace */
713 0xffff, /* src_mask */
714 0xffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
717 /* A 32 bit absolute relocation. */
718 HOWTO (R_M32R_32_RELA, /* type */
719 0, /* rightshift */
720 2, /* size (0 = byte, 1 = short, 2 = long) */
721 32, /* bitsize */
722 FALSE, /* pc_relative */
723 0, /* bitpos */
724 complain_overflow_bitfield, /* complain_on_overflow */
725 bfd_elf_generic_reloc,/* special_function */
726 "R_M32R_32_RELA", /* name */
727 FALSE, /* partial_inplace */
728 0xffffffff, /* src_mask */
729 0xffffffff, /* dst_mask */
730 FALSE), /* pcrel_offset */
732 /* A 24 bit address. */
733 HOWTO (R_M32R_24_RELA, /* type */
734 0, /* rightshift */
735 2, /* size (0 = byte, 1 = short, 2 = long) */
736 24, /* bitsize */
737 FALSE, /* pc_relative */
738 0, /* bitpos */
739 complain_overflow_unsigned, /* complain_on_overflow */
740 bfd_elf_generic_reloc,/* special_function */
741 "R_M32R_24_RELA", /* name */
742 FALSE, /* partial_inplace */
743 0xffffff, /* src_mask */
744 0xffffff, /* dst_mask */
745 FALSE), /* pcrel_offset */
747 HOWTO (R_M32R_10_PCREL_RELA, /* type */
748 2, /* rightshift */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
750 10, /* bitsize */
751 TRUE, /* pc_relative */
752 0, /* bitpos */
753 complain_overflow_signed, /* complain_on_overflow */
754 m32r_elf_10_pcrel_reloc, /* special_function */
755 "R_M32R_10_PCREL_RELA",/* name */
756 FALSE, /* partial_inplace */
757 0xff, /* src_mask */
758 0xff, /* dst_mask */
759 TRUE), /* pcrel_offset */
761 /* A relative 18 bit relocation, right shifted by 2. */
762 HOWTO (R_M32R_18_PCREL_RELA, /* type */
763 2, /* rightshift */
764 2, /* size (0 = byte, 1 = short, 2 = long) */
765 16, /* bitsize */
766 TRUE, /* pc_relative */
767 0, /* bitpos */
768 complain_overflow_signed, /* complain_on_overflow */
769 bfd_elf_generic_reloc, /* special_function */
770 "R_M32R_18_PCREL_RELA",/* name */
771 FALSE, /* partial_inplace */
772 0xffff, /* src_mask */
773 0xffff, /* dst_mask */
774 TRUE), /* pcrel_offset */
776 /* A relative 26 bit relocation, right shifted by 2. */
777 HOWTO (R_M32R_26_PCREL_RELA, /* type */
778 2, /* rightshift */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
780 26, /* bitsize */
781 TRUE, /* pc_relative */
782 0, /* bitpos */
783 complain_overflow_signed, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
785 "R_M32R_26_PCREL_RELA",/* name */
786 FALSE, /* partial_inplace */
787 0xffffff, /* src_mask */
788 0xffffff, /* dst_mask */
789 TRUE), /* pcrel_offset */
791 /* High 16 bits of address when lower 16 is or'd in. */
792 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
793 16, /* rightshift */
794 2, /* size (0 = byte, 1 = short, 2 = long) */
795 16, /* bitsize */
796 FALSE, /* pc_relative */
797 0, /* bitpos */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_M32R_HI16_ULO_RELA",/* name */
801 FALSE, /* partial_inplace */
802 0x0000ffff, /* src_mask */
803 0x0000ffff, /* dst_mask */
804 FALSE), /* pcrel_offset */
806 /* High 16 bits of address when lower 16 is added in. */
807 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
808 16, /* rightshift */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
810 16, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_M32R_HI16_SLO_RELA",/* name */
816 FALSE, /* partial_inplace */
817 0x0000ffff, /* src_mask */
818 0x0000ffff, /* dst_mask */
819 FALSE), /* pcrel_offset */
821 /* Lower 16 bits of address. */
822 HOWTO (R_M32R_LO16_RELA, /* type */
823 0, /* rightshift */
824 2, /* size (0 = byte, 1 = short, 2 = long) */
825 16, /* bitsize */
826 FALSE, /* pc_relative */
827 0, /* bitpos */
828 complain_overflow_dont, /* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_M32R_LO16_RELA", /* name */
831 FALSE, /* partial_inplace */
832 0x0000ffff, /* src_mask */
833 0x0000ffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
836 /* Small data area 16 bits offset. */
837 HOWTO (R_M32R_SDA16_RELA, /* type */
838 0, /* rightshift */
839 2, /* size (0 = byte, 1 = short, 2 = long) */
840 16, /* bitsize */
841 FALSE, /* pc_relative */
842 0, /* bitpos */
843 complain_overflow_signed, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_M32R_SDA16_RELA", /* name */
846 TRUE, /* partial_inplace */ /* FIXME: correct? */
847 0x0000ffff, /* src_mask */
848 0x0000ffff, /* dst_mask */
849 FALSE), /* pcrel_offset */
851 /* GNU extension to record C++ vtable hierarchy. */
852 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
853 0, /* rightshift */
854 2, /* size (0 = byte, 1 = short, 2 = long) */
855 0, /* bitsize */
856 FALSE, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 NULL, /* special_function */
860 "R_M32R_RELA_GNU_VTINHERIT", /* name */
861 FALSE, /* partial_inplace */
862 0, /* src_mask */
863 0, /* dst_mask */
864 FALSE), /* pcrel_offset */
866 /* GNU extension to record C++ vtable member usage. */
867 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
868 0, /* rightshift */
869 2, /* size (0 = byte, 1 = short, 2 = long) */
870 0, /* bitsize */
871 FALSE, /* pc_relative */
872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
874 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
875 "R_M32R_RELA_GNU_VTENTRY", /* name */
876 FALSE, /* partial_inplace */
877 0, /* src_mask */
878 0, /* dst_mask */
879 FALSE), /* pcrel_offset */
881 /* A 32 bit PC relative relocation. */
882 HOWTO (R_M32R_REL32, /* type */
883 0, /* rightshift */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
885 32, /* bitsize */
886 TRUE, /* pc_relative */
887 0, /* bitpos */
888 complain_overflow_bitfield, /* complain_on_overflow */
889 bfd_elf_generic_reloc,/* special_function */
890 "R_M32R_REL32", /* name */
891 FALSE, /* partial_inplace */
892 0xffffffff, /* src_mask */
893 0xffffffff, /* dst_mask */
894 TRUE), /* pcrel_offset */
896 EMPTY_HOWTO (46),
897 EMPTY_HOWTO (47),
899 /* Like R_M32R_24, but referring to the GOT table entry for
900 the symbol. */
901 HOWTO (R_M32R_GOT24, /* type */
902 0, /* rightshift */
903 2, /* size (0 = byte, 1 = short, 2 = long) */
904 24, /* bitsize */
905 FALSE, /* pc_relative */
906 0, /* bitpos */
907 complain_overflow_unsigned, /* complain_on_overflow */
908 bfd_elf_generic_reloc, /* special_function */
909 "R_M32R_GOT24", /* name */
910 FALSE, /* partial_inplace */
911 0xffffff, /* src_mask */
912 0xffffff, /* dst_mask */
913 FALSE), /* pcrel_offset */
915 /* Like R_M32R_PCREL, but referring to the procedure linkage table
916 entry for the symbol. */
917 HOWTO (R_M32R_26_PLTREL, /* type */
918 2, /* rightshift */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
920 24, /* bitsize */
921 TRUE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_signed, /* complain_on_overflow */
924 bfd_elf_generic_reloc, /* special_function */
925 "R_M32R_26_PLTREL", /* name */
926 FALSE, /* partial_inplace */
927 0xffffff, /* src_mask */
928 0xffffff, /* dst_mask */
929 TRUE), /* pcrel_offset */
931 /* This is used only by the dynamic linker. The symbol should exist
932 both in the object being run and in some shared library. The
933 dynamic linker copies the data addressed by the symbol from the
934 shared library into the object, because the object being
935 run has to have the data at some particular address. */
936 HOWTO (R_M32R_COPY, /* type */
937 0, /* rightshift */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
939 32, /* bitsize */
940 FALSE, /* pc_relative */
941 0, /* bitpos */
942 complain_overflow_bitfield, /* complain_on_overflow */
943 bfd_elf_generic_reloc, /* special_function */
944 "R_M32R_COPY", /* name */
945 FALSE, /* partial_inplace */
946 0xffffffff, /* src_mask */
947 0xffffffff, /* dst_mask */
948 FALSE), /* pcrel_offset */
950 /* Like R_M32R_24, but used when setting global offset table
951 entries. */
952 HOWTO (R_M32R_GLOB_DAT, /* type */
953 0, /* rightshift */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
955 32, /* bitsize */
956 FALSE, /* pc_relative */
957 0, /* bitpos */
958 complain_overflow_bitfield, /* complain_on_overflow */
959 bfd_elf_generic_reloc, /* special_function */
960 "R_M32R_GLOB_DAT", /* name */
961 FALSE, /* partial_inplace */
962 0xffffffff, /* src_mask */
963 0xffffffff, /* dst_mask */
964 FALSE), /* pcrel_offset */
966 /* Marks a procedure linkage table entry for a symbol. */
967 HOWTO (R_M32R_JMP_SLOT, /* type */
968 0, /* rightshift */
969 2, /* size (0 = byte, 1 = short, 2 = long) */
970 32, /* bitsize */
971 FALSE, /* pc_relative */
972 0, /* bitpos */
973 complain_overflow_bitfield, /* complain_on_overflow */
974 bfd_elf_generic_reloc, /* special_function */
975 "R_M32R_JMP_SLOT", /* name */
976 FALSE, /* partial_inplace */
977 0xffffffff, /* src_mask */
978 0xffffffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
981 /* Used only by the dynamic linker. When the object is run, this
982 longword is set to the load address of the object, plus the
983 addend. */
984 HOWTO (R_M32R_RELATIVE, /* type */
985 0, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 32, /* bitsize */
988 FALSE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_bitfield, /* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_M32R_RELATIVE", /* name */
993 FALSE, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 FALSE), /* pcrel_offset */
998 HOWTO (R_M32R_GOTOFF, /* type */
999 0, /* rightshift */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 24, /* bitsize */
1002 FALSE, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_bitfield, /* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_M32R_GOTOFF", /* name */
1007 FALSE, /* partial_inplace */
1008 0xffffff, /* src_mask */
1009 0xffffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1012 /* An PC Relative 24-bit relocation used when setting PIC offset
1013 table register. */
1014 HOWTO (R_M32R_GOTPC24, /* type */
1015 0, /* rightshift */
1016 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 24, /* bitsize */
1018 TRUE, /* pc_relative */
1019 0, /* bitpos */
1020 complain_overflow_unsigned, /* complain_on_overflow */
1021 bfd_elf_generic_reloc, /* special_function */
1022 "R_M32R_GOTPC24", /* name */
1023 FALSE, /* partial_inplace */
1024 0xffffff, /* src_mask */
1025 0xffffff, /* dst_mask */
1026 TRUE), /* pcrel_offset */
1028 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1029 the symbol. */
1030 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1031 16, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 16, /* bitsize */
1034 FALSE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_dont, /* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_M32R_GOT16_HI_ULO", /* name */
1039 FALSE, /* partial_inplace */
1040 0x0000ffff, /* src_mask */
1041 0x0000ffff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1044 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1045 the symbol. */
1046 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1047 16, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 16, /* bitsize */
1050 FALSE, /* pc_relative */
1051 0, /* bitpos */
1052 complain_overflow_dont, /* complain_on_overflow */
1053 bfd_elf_generic_reloc, /* special_function */
1054 "R_M32R_GOT16_HI_SLO", /* name */
1055 FALSE, /* partial_inplace */
1056 0x0000ffff, /* src_mask */
1057 0x0000ffff, /* dst_mask */
1058 FALSE), /* pcrel_offset */
1060 /* Like R_M32R_LO16, but referring to the GOT table entry for
1061 the symbol. */
1062 HOWTO (R_M32R_GOT16_LO, /* type */
1063 0, /* rightshift */
1064 2, /* size (0 = byte, 1 = short, 2 = long) */
1065 16, /* bitsize */
1066 FALSE, /* pc_relative */
1067 0, /* bitpos */
1068 complain_overflow_dont, /* complain_on_overflow */
1069 bfd_elf_generic_reloc, /* special_function */
1070 "R_M32R_GOT16_LO", /* name */
1071 FALSE, /* partial_inplace */
1072 0x0000ffff, /* src_mask */
1073 0x0000ffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1076 /* An PC Relative relocation used when setting PIC offset table register.
1077 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1078 the symbol. */
1079 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1080 16, /* rightshift */
1081 2, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 bfd_elf_generic_reloc, /* special_function */
1087 "R_M32R_GOTPC_HI_ULO", /* name */
1088 FALSE, /* partial_inplace */
1089 0x0000ffff, /* src_mask */
1090 0x0000ffff, /* dst_mask */
1091 TRUE), /* pcrel_offset */
1093 /* An PC Relative relocation used when setting PIC offset table register.
1094 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1095 the symbol. */
1096 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1097 16, /* rightshift */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 16, /* bitsize */
1100 FALSE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont, /* complain_on_overflow */
1103 bfd_elf_generic_reloc, /* special_function */
1104 "R_M32R_GOTPC_HI_SLO", /* name */
1105 FALSE, /* partial_inplace */
1106 0x0000ffff, /* src_mask */
1107 0x0000ffff, /* dst_mask */
1108 TRUE), /* pcrel_offset */
1110 /* An PC Relative relocation used when setting PIC offset table register.
1111 Like R_M32R_LO16, but referring to the GOT table entry for
1112 the symbol. */
1113 HOWTO (R_M32R_GOTPC_LO, /* type */
1114 0, /* rightshift */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 16, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont, /* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 "R_M32R_GOTPC_LO", /* name */
1122 FALSE, /* partial_inplace */
1123 0x0000ffff, /* src_mask */
1124 0x0000ffff, /* dst_mask */
1125 TRUE), /* pcrel_offset */
1127 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1128 16, /* rightshift */
1129 2, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont, /* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_M32R_GOTOFF_HI_ULO",/* name */
1136 FALSE, /* partial_inplace */
1137 0x0000ffff, /* src_mask */
1138 0x0000ffff, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1142 16, /* rightshift */
1143 2, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 bfd_elf_generic_reloc, /* special_function */
1149 "R_M32R_GOTOFF_HI_SLO",/* name */
1150 FALSE, /* partial_inplace */
1151 0x0000ffff, /* src_mask */
1152 0x0000ffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1155 HOWTO (R_M32R_GOTOFF_LO, /* type */
1156 0, /* rightshift */
1157 2, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 bfd_elf_generic_reloc, /* special_function */
1163 "R_M32R_GOTOFF_LO", /* name */
1164 FALSE, /* partial_inplace */
1165 0x0000ffff, /* src_mask */
1166 0x0000ffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1170 /* Map BFD reloc types to M32R ELF reloc types. */
1172 struct m32r_reloc_map
1174 bfd_reloc_code_real_type bfd_reloc_val;
1175 unsigned char elf_reloc_val;
1178 #ifdef USE_M32R_OLD_RELOC
1179 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1181 { BFD_RELOC_NONE, R_M32R_NONE },
1182 { BFD_RELOC_16, R_M32R_16 },
1183 { BFD_RELOC_32, R_M32R_32 },
1184 { BFD_RELOC_M32R_24, R_M32R_24 },
1185 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1186 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1187 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1188 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1189 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1190 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1191 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1192 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1193 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1195 #else
1196 static const struct m32r_reloc_map m32r_reloc_map[] =
1198 { BFD_RELOC_NONE, R_M32R_NONE },
1199 { BFD_RELOC_16, R_M32R_16_RELA },
1200 { BFD_RELOC_32, R_M32R_32_RELA },
1201 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1202 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1203 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1204 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1205 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1206 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1207 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1208 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1209 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1210 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1211 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1213 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1214 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1215 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1216 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1217 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1218 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1219 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1220 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1221 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1222 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1223 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1224 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1225 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1226 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1228 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1229 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1231 #endif
1233 static reloc_howto_type *
1234 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1235 bfd_reloc_code_real_type code)
1237 unsigned int i;
1239 #ifdef USE_M32R_OLD_RELOC
1240 for (i = 0;
1241 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1242 i++)
1243 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1244 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1246 #else /* ! USE_M32R_OLD_RELOC */
1248 for (i = 0;
1249 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1250 i++)
1251 if (m32r_reloc_map[i].bfd_reloc_val == code)
1252 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1253 #endif
1255 return NULL;
1258 static reloc_howto_type *
1259 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1260 const char *r_name)
1262 unsigned int i;
1264 for (i = 0;
1265 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
1266 i++)
1267 if (m32r_elf_howto_table[i].name != NULL
1268 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
1269 return &m32r_elf_howto_table[i];
1271 return NULL;
1274 /* Set the howto pointer for an M32R ELF reloc. */
1276 static void
1277 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1278 arelent *cache_ptr,
1279 Elf_Internal_Rela *dst)
1281 unsigned int r_type;
1283 r_type = ELF32_R_TYPE (dst->r_info);
1284 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1285 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1288 static void
1289 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1290 arelent *cache_ptr,
1291 Elf_Internal_Rela *dst)
1293 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1294 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1295 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1296 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1300 /* Given a BFD section, try to locate the corresponding ELF section
1301 index. */
1303 static bfd_boolean
1304 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1305 asection *sec,
1306 int *retval)
1308 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1310 *retval = SHN_M32R_SCOMMON;
1311 return TRUE;
1313 return FALSE;
1316 /* M32R ELF uses two common sections. One is the usual one, and the other
1317 is for small objects. All the small objects are kept together, and then
1318 referenced via one register, which yields faster assembler code. It is
1319 up to the compiler to emit an instruction to load the register with
1320 _SDA_BASE. This is what we use for the small common section. This
1321 approach is copied from elf32-mips.c. */
1322 static asection m32r_elf_scom_section;
1323 static asymbol m32r_elf_scom_symbol;
1324 static asymbol *m32r_elf_scom_symbol_ptr;
1326 /* Handle the special M32R section numbers that a symbol may use. */
1328 static void
1329 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1331 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1333 switch (elfsym->internal_elf_sym.st_shndx)
1335 case SHN_M32R_SCOMMON:
1336 if (m32r_elf_scom_section.name == NULL)
1338 /* Initialize the small common section. */
1339 m32r_elf_scom_section.name = ".scommon";
1340 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1341 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1342 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1343 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1344 m32r_elf_scom_symbol.name = ".scommon";
1345 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1346 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1347 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1349 asym->section = &m32r_elf_scom_section;
1350 asym->value = elfsym->internal_elf_sym.st_size;
1351 break;
1355 /* Hook called by the linker routine which adds symbols from an object
1356 file. We must handle the special M32R section numbers here.
1357 We also keep watching for whether we need to create the sdata special
1358 linker sections. */
1360 static bfd_boolean
1361 m32r_elf_add_symbol_hook (bfd *abfd,
1362 struct bfd_link_info *info,
1363 Elf_Internal_Sym *sym,
1364 const char **namep,
1365 flagword *flagsp ATTRIBUTE_UNUSED,
1366 asection **secp,
1367 bfd_vma *valp)
1369 if (! info->relocatable
1370 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1371 && strcmp (*namep, "_SDA_BASE_") == 0
1372 && is_elf_hash_table (info->hash))
1374 /* This is simpler than using _bfd_elf_create_linker_section
1375 (our needs are simpler than ppc's needs). Also
1376 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1377 section already exists a new one is created that follows it which
1378 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1379 struct elf_link_hash_entry *h;
1380 struct bfd_link_hash_entry *bh;
1381 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1383 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1384 if (s == NULL)
1386 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1387 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1389 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1390 flags);
1391 if (s == NULL)
1392 return FALSE;
1393 bfd_set_section_alignment (abfd, s, 2);
1396 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1397 FALSE, FALSE, FALSE);
1399 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1400 && !(_bfd_generic_link_add_one_symbol (info,
1401 abfd,
1402 "_SDA_BASE_",
1403 BSF_GLOBAL,
1405 (bfd_vma) 32768,
1406 NULL,
1407 FALSE,
1408 get_elf_backend_data (abfd)->collect,
1409 &bh)))
1410 return FALSE;
1411 h = (struct elf_link_hash_entry *) bh;
1412 h->type = STT_OBJECT;
1415 switch (sym->st_shndx)
1417 case SHN_M32R_SCOMMON:
1418 *secp = bfd_make_section_old_way (abfd, ".scommon");
1419 (*secp)->flags |= SEC_IS_COMMON;
1420 *valp = sym->st_size;
1421 break;
1424 return TRUE;
1427 /* We have to figure out the SDA_BASE value, so that we can adjust the
1428 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1429 BFD. If we can't find it, we're stuck. We cache it in the ELF
1430 target data. We don't need to adjust the symbol value for an
1431 external symbol if we are producing relocatable output. */
1433 static bfd_reloc_status_type
1434 m32r_elf_final_sda_base (bfd *output_bfd,
1435 struct bfd_link_info *info,
1436 const char **error_message,
1437 bfd_vma *psb)
1439 if (elf_gp (output_bfd) == 0)
1441 struct bfd_link_hash_entry *h;
1443 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1444 if (h != NULL && h->type == bfd_link_hash_defined)
1445 elf_gp (output_bfd) = (h->u.def.value
1446 + h->u.def.section->output_section->vma
1447 + h->u.def.section->output_offset);
1448 else
1450 /* Only get the error once. */
1451 *psb = elf_gp (output_bfd) = 4;
1452 *error_message =
1453 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1454 return bfd_reloc_dangerous;
1457 *psb = elf_gp (output_bfd);
1458 return bfd_reloc_ok;
1461 /* Return size of a PLT entry. */
1462 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1464 /* The m32r linker needs to keep track of the number of relocs that it
1465 decides to copy in check_relocs for each symbol. This is so that
1466 it can discard PC relative relocs if it doesn't need them when
1467 linking with -Bsymbolic. We store the information in a field
1468 extending the regular ELF linker hash table. */
1470 /* This structure keeps track of the number of PC relative relocs we
1471 have copied for a given symbol. */
1473 struct elf_m32r_pcrel_relocs_copied
1475 /* Next section. */
1476 struct elf_m32r_pcrel_relocs_copied *next;
1477 /* A section in dynobj. */
1478 asection *section;
1479 /* Number of relocs copied in this section. */
1480 bfd_size_type count;
1483 /* The sh linker needs to keep track of the number of relocs that it
1484 decides to copy as dynamic relocs in check_relocs for each symbol.
1485 This is so that it can later discard them if they are found to be
1486 unnecessary. We store the information in a field extending the
1487 regular ELF linker hash table. */
1489 struct elf_m32r_dyn_relocs
1491 struct elf_m32r_dyn_relocs *next;
1493 /* The input section of the reloc. */
1494 asection *sec;
1496 /* Total number of relocs copied for the input section. */
1497 bfd_size_type count;
1499 /* Number of pc-relative relocs copied for the input section. */
1500 bfd_size_type pc_count;
1504 /* m32r ELF linker hash entry. */
1506 struct elf_m32r_link_hash_entry
1508 struct elf_link_hash_entry root;
1510 /* Track dynamic relocs copied for this symbol. */
1511 struct elf_m32r_dyn_relocs *dyn_relocs;
1514 /* m32r ELF linker hash table. */
1516 struct elf_m32r_link_hash_table
1518 struct elf_link_hash_table root;
1520 /* Short-cuts to get to dynamic linker sections. */
1521 asection *sgot;
1522 asection *sgotplt;
1523 asection *srelgot;
1524 asection *splt;
1525 asection *srelplt;
1526 asection *sdynbss;
1527 asection *srelbss;
1529 /* Small local sym cache. */
1530 struct sym_cache sym_cache;
1533 /* Traverse an m32r ELF linker hash table. */
1535 #define m32r_elf_link_hash_traverse(table, func, info) \
1536 (elf_link_hash_traverse \
1537 (&(table)->root, \
1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1539 (info)))
1541 /* Get the m32r ELF linker hash table from a link_info structure. */
1544 #define m32r_elf_hash_table(p) \
1545 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1547 /* Create an entry in an m32r ELF linker hash table. */
1549 static struct bfd_hash_entry *
1550 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1551 struct bfd_hash_table *table,
1552 const char *string)
1554 struct elf_m32r_link_hash_entry *ret =
1555 (struct elf_m32r_link_hash_entry *) entry;
1557 /* Allocate the structure if it has not already been allocated by a
1558 subclass. */
1559 if (ret == NULL)
1560 ret = bfd_hash_allocate (table,
1561 sizeof (struct elf_m32r_link_hash_entry));
1562 if (ret == NULL)
1563 return NULL;
1565 /* Call the allocation method of the superclass. */
1566 ret = ((struct elf_m32r_link_hash_entry *)
1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1568 table, string));
1569 if (ret != NULL)
1571 struct elf_m32r_link_hash_entry *eh;
1573 eh = (struct elf_m32r_link_hash_entry *) ret;
1574 eh->dyn_relocs = NULL;
1577 return (struct bfd_hash_entry *) ret;
1580 /* Create an m32r ELF linker hash table. */
1582 static struct bfd_link_hash_table *
1583 m32r_elf_link_hash_table_create (bfd *abfd)
1585 struct elf_m32r_link_hash_table *ret;
1586 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1588 ret = bfd_malloc (amt);
1589 if (ret == NULL)
1590 return NULL;
1592 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1593 m32r_elf_link_hash_newfunc,
1594 sizeof (struct elf_m32r_link_hash_entry)))
1596 free (ret);
1597 return NULL;
1600 ret->sgot = NULL;
1601 ret->sgotplt = NULL;
1602 ret->srelgot = NULL;
1603 ret->splt = NULL;
1604 ret->srelplt = NULL;
1605 ret->sdynbss = NULL;
1606 ret->srelbss = NULL;
1607 ret->sym_cache.abfd = NULL;
1609 return &ret->root.root;
1612 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1613 shortcuts to them in our hash table. */
1615 static bfd_boolean
1616 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1618 struct elf_m32r_link_hash_table *htab;
1620 if (! _bfd_elf_create_got_section (dynobj, info))
1621 return FALSE;
1623 htab = m32r_elf_hash_table (info);
1624 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1625 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1626 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1627 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
1628 abort ();
1630 return TRUE;
1633 /* Create dynamic sections when linking against a dynamic object. */
1635 static bfd_boolean
1636 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1638 struct elf_m32r_link_hash_table *htab;
1639 flagword flags, pltflags;
1640 asection *s;
1641 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1642 int ptralign = 2; /* 32bit */
1644 htab = m32r_elf_hash_table (info);
1646 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1647 .rel[a].bss sections. */
1648 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1649 | SEC_LINKER_CREATED);
1651 pltflags = flags;
1652 pltflags |= SEC_CODE;
1653 if (bed->plt_not_loaded)
1654 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1655 if (bed->plt_readonly)
1656 pltflags |= SEC_READONLY;
1658 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1659 htab->splt = s;
1660 if (s == NULL
1661 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1662 return FALSE;
1664 if (bed->want_plt_sym)
1666 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1667 .plt section. */
1668 struct bfd_link_hash_entry *bh = NULL;
1669 struct elf_link_hash_entry *h;
1671 if (! (_bfd_generic_link_add_one_symbol
1672 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1673 (bfd_vma) 0, NULL, FALSE,
1674 get_elf_backend_data (abfd)->collect, &bh)))
1675 return FALSE;
1676 h = (struct elf_link_hash_entry *) bh;
1677 h->def_regular = 1;
1678 h->type = STT_OBJECT;
1679 htab->root.hplt = h;
1681 if (info->shared
1682 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1683 return FALSE;
1686 s = bfd_make_section_with_flags (abfd,
1687 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1688 flags | SEC_READONLY);
1689 htab->srelplt = s;
1690 if (s == NULL
1691 || ! bfd_set_section_alignment (abfd, s, ptralign))
1692 return FALSE;
1694 if (htab->sgot == NULL
1695 && ! create_got_section (abfd, info))
1696 return FALSE;
1699 const char *secname;
1700 char *relname;
1701 flagword secflags;
1702 asection *sec;
1704 for (sec = abfd->sections; sec; sec = sec->next)
1706 secflags = bfd_get_section_flags (abfd, sec);
1707 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1708 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1709 continue;
1710 secname = bfd_get_section_name (abfd, sec);
1711 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1712 strcpy (relname, ".rela");
1713 strcat (relname, secname);
1714 if (bfd_get_section_by_name (abfd, secname))
1715 continue;
1716 s = bfd_make_section_with_flags (abfd, relname,
1717 flags | SEC_READONLY);
1718 if (s == NULL
1719 || ! bfd_set_section_alignment (abfd, s, ptralign))
1720 return FALSE;
1724 if (bed->want_dynbss)
1726 /* The .dynbss section is a place to put symbols which are defined
1727 by dynamic objects, are referenced by regular objects, and are
1728 not functions. We must allocate space for them in the process
1729 image and use a R_*_COPY reloc to tell the dynamic linker to
1730 initialize them at run time. The linker script puts the .dynbss
1731 section into the .bss section of the final image. */
1732 s = bfd_make_section_with_flags (abfd, ".dynbss",
1733 SEC_ALLOC | SEC_LINKER_CREATED);
1734 htab->sdynbss = s;
1735 if (s == NULL)
1736 return FALSE;
1737 /* The .rel[a].bss section holds copy relocs. This section is not
1738 normally needed. We need to create it here, though, so that the
1739 linker will map it to an output section. We can't just create it
1740 only if we need it, because we will not know whether we need it
1741 until we have seen all the input files, and the first time the
1742 main linker code calls BFD after examining all the input files
1743 (size_dynamic_sections) the input sections have already been
1744 mapped to the output sections. If the section turns out not to
1745 be needed, we can discard it later. We will never need this
1746 section when generating a shared object, since they do not use
1747 copy relocs. */
1748 if (! info->shared)
1750 s = bfd_make_section_with_flags (abfd,
1751 (bed->default_use_rela_p
1752 ? ".rela.bss" : ".rel.bss"),
1753 flags | SEC_READONLY);
1754 htab->srelbss = s;
1755 if (s == NULL
1756 || ! bfd_set_section_alignment (abfd, s, ptralign))
1757 return FALSE;
1761 return TRUE;
1764 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1766 static void
1767 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1768 struct elf_link_hash_entry *dir,
1769 struct elf_link_hash_entry *ind)
1771 struct elf_m32r_link_hash_entry * edir;
1772 struct elf_m32r_link_hash_entry * eind;
1774 edir = (struct elf_m32r_link_hash_entry *) dir;
1775 eind = (struct elf_m32r_link_hash_entry *) ind;
1777 if (eind->dyn_relocs != NULL)
1779 if (edir->dyn_relocs != NULL)
1781 struct elf_m32r_dyn_relocs **pp;
1782 struct elf_m32r_dyn_relocs *p;
1784 /* Add reloc counts against the indirect sym to the direct sym
1785 list. Merge any entries against the same section. */
1786 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1788 struct elf_m32r_dyn_relocs *q;
1790 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1791 if (q->sec == p->sec)
1793 q->pc_count += p->pc_count;
1794 q->count += p->count;
1795 *pp = p->next;
1796 break;
1798 if (q == NULL)
1799 pp = &p->next;
1801 *pp = edir->dyn_relocs;
1804 edir->dyn_relocs = eind->dyn_relocs;
1805 eind->dyn_relocs = NULL;
1808 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1812 /* Adjust a symbol defined by a dynamic object and referenced by a
1813 regular object. The current definition is in some section of the
1814 dynamic object, but we're not including those sections. We have to
1815 change the definition to something the rest of the link can
1816 understand. */
1818 static bfd_boolean
1819 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1820 struct elf_link_hash_entry *h)
1822 struct elf_m32r_link_hash_table *htab;
1823 struct elf_m32r_link_hash_entry *eh;
1824 struct elf_m32r_dyn_relocs *p;
1825 bfd *dynobj;
1826 asection *s;
1828 #ifdef DEBUG_PIC
1829 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1830 #endif
1832 dynobj = elf_hash_table (info)->dynobj;
1834 /* Make sure we know what is going on here. */
1835 BFD_ASSERT (dynobj != NULL
1836 && (h->needs_plt
1837 || h->u.weakdef != NULL
1838 || (h->def_dynamic
1839 && h->ref_regular
1840 && !h->def_regular)));
1842 /* If this is a function, put it in the procedure linkage table. We
1843 will fill in the contents of the procedure linkage table later,
1844 when we know the address of the .got section. */
1845 if (h->type == STT_FUNC
1846 || h->needs_plt)
1848 if (! info->shared
1849 && !h->def_dynamic
1850 && !h->ref_dynamic
1851 && h->root.type != bfd_link_hash_undefweak
1852 && h->root.type != bfd_link_hash_undefined)
1854 /* This case can occur if we saw a PLT reloc in an input
1855 file, but the symbol was never referred to by a dynamic
1856 object. In such a case, we don't actually need to build
1857 a procedure linkage table, and we can just do a PCREL
1858 reloc instead. */
1859 h->plt.offset = (bfd_vma) -1;
1860 h->needs_plt = 0;
1863 return TRUE;
1865 else
1866 h->plt.offset = (bfd_vma) -1;
1868 /* If this is a weak symbol, and there is a real definition, the
1869 processor independent code will have arranged for us to see the
1870 real definition first, and we can just use the same value. */
1871 if (h->u.weakdef != NULL)
1873 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1874 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1875 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1876 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1877 return TRUE;
1880 /* This is a reference to a symbol defined by a dynamic object which
1881 is not a function. */
1883 /* If we are creating a shared library, we must presume that the
1884 only references to the symbol are via the global offset table.
1885 For such cases we need not do anything here; the relocations will
1886 be handled correctly by relocate_section. */
1887 if (info->shared)
1888 return TRUE;
1890 /* If there are no references to this symbol that do not use the
1891 GOT, we don't need to generate a copy reloc. */
1892 if (!h->non_got_ref)
1893 return TRUE;
1895 /* If -z nocopyreloc was given, we won't generate them either. */
1896 if (info->nocopyreloc)
1898 h->non_got_ref = 0;
1899 return TRUE;
1902 eh = (struct elf_m32r_link_hash_entry *) h;
1903 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1905 s = p->sec->output_section;
1906 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1907 break;
1910 /* If we didn't find any dynamic relocs in sections which needs the
1911 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1912 the copy reloc. */
1913 if (p == NULL)
1915 h->non_got_ref = 0;
1916 return TRUE;
1919 if (h->size == 0)
1921 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1922 h->root.root.string);
1923 return TRUE;
1926 /* We must allocate the symbol in our .dynbss section, which will
1927 become part of the .bss section of the executable. There will be
1928 an entry for this symbol in the .dynsym section. The dynamic
1929 object will contain position independent code, so all references
1930 from the dynamic object to this symbol will go through the global
1931 offset table. The dynamic linker will use the .dynsym entry to
1932 determine the address it must put in the global offset table, so
1933 both the dynamic object and the regular object will refer to the
1934 same memory location for the variable. */
1936 htab = m32r_elf_hash_table (info);
1937 s = htab->sdynbss;
1938 BFD_ASSERT (s != NULL);
1940 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1941 to copy the initial value out of the dynamic object and into the
1942 runtime process image. We need to remember the offset into the
1943 .rela.bss section we are going to use. */
1944 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1946 asection *srel;
1948 srel = htab->srelbss;
1949 BFD_ASSERT (srel != NULL);
1950 srel->size += sizeof (Elf32_External_Rela);
1951 h->needs_copy = 1;
1954 return _bfd_elf_adjust_dynamic_copy (h, s);
1957 /* Allocate space in .plt, .got and associated reloc sections for
1958 dynamic relocs. */
1960 static bfd_boolean
1961 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1963 struct bfd_link_info *info;
1964 struct elf_m32r_link_hash_table *htab;
1965 struct elf_m32r_link_hash_entry *eh;
1966 struct elf_m32r_dyn_relocs *p;
1968 if (h->root.type == bfd_link_hash_indirect)
1969 return TRUE;
1971 if (h->root.type == bfd_link_hash_warning)
1972 /* When warning symbols are created, they **replace** the "real"
1973 entry in the hash table, thus we never get to see the real
1974 symbol in a hash traversal. So look at it now. */
1975 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1977 info = (struct bfd_link_info *) inf;
1978 htab = m32r_elf_hash_table (info);
1980 eh = (struct elf_m32r_link_hash_entry *) h;
1982 if (htab->root.dynamic_sections_created
1983 && h->plt.refcount > 0)
1985 /* Make sure this symbol is output as a dynamic symbol.
1986 Undefined weak syms won't yet be marked as dynamic. */
1987 if (h->dynindx == -1
1988 && !h->forced_local)
1990 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1991 return FALSE;
1994 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1996 asection *s = htab->splt;
1998 /* If this is the first .plt entry, make room for the special
1999 first entry. */
2000 if (s->size == 0)
2001 s->size += PLT_ENTRY_SIZE;
2003 h->plt.offset = s->size;
2005 /* If this symbol is not defined in a regular file, and we are
2006 not generating a shared library, then set the symbol to this
2007 location in the .plt. This is required to make function
2008 pointers compare as equal between the normal executable and
2009 the shared library. */
2010 if (! info->shared
2011 && !h->def_regular)
2013 h->root.u.def.section = s;
2014 h->root.u.def.value = h->plt.offset;
2017 /* Make room for this entry. */
2018 s->size += PLT_ENTRY_SIZE;
2020 /* We also need to make an entry in the .got.plt section, which
2021 will be placed in the .got section by the linker script. */
2022 htab->sgotplt->size += 4;
2024 /* We also need to make an entry in the .rel.plt section. */
2025 htab->srelplt->size += sizeof (Elf32_External_Rela);
2027 else
2029 h->plt.offset = (bfd_vma) -1;
2030 h->needs_plt = 0;
2033 else
2035 h->plt.offset = (bfd_vma) -1;
2036 h->needs_plt = 0;
2039 if (h->got.refcount > 0)
2041 asection *s;
2042 bfd_boolean dyn;
2044 /* Make sure this symbol is output as a dynamic symbol.
2045 Undefined weak syms won't yet be marked as dynamic. */
2046 if (h->dynindx == -1
2047 && !h->forced_local)
2049 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2050 return FALSE;
2053 s = htab->sgot;
2055 h->got.offset = s->size;
2056 s->size += 4;
2057 dyn = htab->root.dynamic_sections_created;
2058 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2059 htab->srelgot->size += sizeof (Elf32_External_Rela);
2061 else
2062 h->got.offset = (bfd_vma) -1;
2064 if (eh->dyn_relocs == NULL)
2065 return TRUE;
2067 /* In the shared -Bsymbolic case, discard space allocated for
2068 dynamic pc-relative relocs against symbols which turn out to be
2069 defined in regular objects. For the normal shared case, discard
2070 space for pc-relative relocs that have become local due to symbol
2071 visibility changes. */
2073 if (info->shared)
2075 if (h->def_regular
2076 && (h->forced_local
2077 || info->symbolic))
2079 struct elf_m32r_dyn_relocs **pp;
2081 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2083 p->count -= p->pc_count;
2084 p->pc_count = 0;
2085 if (p->count == 0)
2086 *pp = p->next;
2087 else
2088 pp = &p->next;
2092 /* Also discard relocs on undefined weak syms with non-default
2093 visibility. */
2094 if (eh->dyn_relocs != NULL
2095 && h->root.type == bfd_link_hash_undefweak)
2097 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2098 eh->dyn_relocs = NULL;
2100 /* Make sure undefined weak symbols are output as a dynamic
2101 symbol in PIEs. */
2102 else if (h->dynindx == -1
2103 && !h->forced_local)
2105 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2106 return FALSE;
2110 else
2112 /* For the non-shared case, discard space for relocs against
2113 symbols which turn out to need copy relocs or are not
2114 dynamic. */
2116 if (!h->non_got_ref
2117 && ((h->def_dynamic
2118 && !h->def_regular)
2119 || (htab->root.dynamic_sections_created
2120 && (h->root.type == bfd_link_hash_undefweak
2121 || h->root.type == bfd_link_hash_undefined))))
2123 /* Make sure this symbol is output as a dynamic symbol.
2124 Undefined weak syms won't yet be marked as dynamic. */
2125 if (h->dynindx == -1
2126 && !h->forced_local)
2128 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2129 return FALSE;
2132 /* If that succeeded, we know we'll be keeping all the
2133 relocs. */
2134 if (h->dynindx != -1)
2135 goto keep;
2138 eh->dyn_relocs = NULL;
2140 keep: ;
2143 /* Finally, allocate space. */
2144 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2146 asection *sreloc = elf_section_data (p->sec)->sreloc;
2147 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2150 return TRUE;
2153 /* Find any dynamic relocs that apply to read-only sections. */
2155 static bfd_boolean
2156 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2158 struct elf_m32r_link_hash_entry *eh;
2159 struct elf_m32r_dyn_relocs *p;
2161 if (h->root.type == bfd_link_hash_warning)
2162 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2164 eh = (struct elf_m32r_link_hash_entry *) h;
2165 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2167 asection *s = p->sec->output_section;
2169 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2171 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2173 info->flags |= DF_TEXTREL;
2175 /* Not an error, just cut short the traversal. */
2176 return FALSE;
2179 return TRUE;
2182 /* Set the sizes of the dynamic sections. */
2184 static bfd_boolean
2185 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2186 struct bfd_link_info *info)
2188 struct elf_m32r_link_hash_table *htab;
2189 bfd *dynobj;
2190 asection *s;
2191 bfd_boolean relocs;
2192 bfd *ibfd;
2194 #ifdef DEBUG_PIC
2195 printf ("m32r_elf_size_dynamic_sections()\n");
2196 #endif
2198 htab = m32r_elf_hash_table (info);
2199 dynobj = htab->root.dynobj;
2200 BFD_ASSERT (dynobj != NULL);
2202 if (htab->root.dynamic_sections_created)
2204 /* Set the contents of the .interp section to the interpreter. */
2205 if (info->executable)
2207 s = bfd_get_section_by_name (dynobj, ".interp");
2208 BFD_ASSERT (s != NULL);
2209 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2210 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2214 /* Set up .got offsets for local syms, and space for local dynamic
2215 relocs. */
2216 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2218 bfd_signed_vma *local_got;
2219 bfd_signed_vma *end_local_got;
2220 bfd_size_type locsymcount;
2221 Elf_Internal_Shdr *symtab_hdr;
2222 asection *srel;
2224 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2225 continue;
2227 for (s = ibfd->sections; s != NULL; s = s->next)
2229 struct elf_m32r_dyn_relocs *p;
2231 for (p = ((struct elf_m32r_dyn_relocs *)
2232 elf_section_data (s)->local_dynrel);
2233 p != NULL;
2234 p = p->next)
2236 if (! bfd_is_abs_section (p->sec)
2237 && bfd_is_abs_section (p->sec->output_section))
2239 /* Input section has been discarded, either because
2240 it is a copy of a linkonce section or due to
2241 linker script /DISCARD/, so we'll be discarding
2242 the relocs too. */
2244 else if (p->count != 0)
2246 srel = elf_section_data (p->sec)->sreloc;
2247 srel->size += p->count * sizeof (Elf32_External_Rela);
2248 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2249 info->flags |= DF_TEXTREL;
2254 local_got = elf_local_got_refcounts (ibfd);
2255 if (!local_got)
2256 continue;
2258 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2259 locsymcount = symtab_hdr->sh_info;
2260 end_local_got = local_got + locsymcount;
2261 s = htab->sgot;
2262 srel = htab->srelgot;
2263 for (; local_got < end_local_got; ++local_got)
2265 if (*local_got > 0)
2267 *local_got = s->size;
2268 s->size += 4;
2269 if (info->shared)
2270 srel->size += sizeof (Elf32_External_Rela);
2272 else
2273 *local_got = (bfd_vma) -1;
2277 /* Allocate global sym .plt and .got entries, and space for global
2278 sym dynamic relocs. */
2279 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2281 /* We now have determined the sizes of the various dynamic sections.
2282 Allocate memory for them. */
2283 relocs = FALSE;
2284 for (s = dynobj->sections; s != NULL; s = s->next)
2286 if ((s->flags & SEC_LINKER_CREATED) == 0)
2287 continue;
2289 if (s == htab->splt
2290 || s == htab->sgot
2291 || s == htab->sgotplt
2292 || s == htab->sdynbss)
2294 /* Strip this section if we don't need it; see the
2295 comment below. */
2297 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2299 if (s->size != 0 && s != htab->srelplt)
2300 relocs = TRUE;
2302 /* We use the reloc_count field as a counter if we need
2303 to copy relocs into the output file. */
2304 s->reloc_count = 0;
2306 else
2307 /* It's not one of our sections, so don't allocate space. */
2308 continue;
2310 if (s->size == 0)
2312 /* If we don't need this section, strip it from the
2313 output file. This is mostly to handle .rela.bss and
2314 .rela.plt. We must create both sections in
2315 create_dynamic_sections, because they must be created
2316 before the linker maps input sections to output
2317 sections. The linker does that before
2318 adjust_dynamic_symbol is called, and it is that
2319 function which decides whether anything needs to go
2320 into these sections. */
2321 s->flags |= SEC_EXCLUDE;
2322 continue;
2325 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2326 continue;
2328 /* Allocate memory for the section contents. We use bfd_zalloc
2329 here in case unused entries are not reclaimed before the
2330 section's contents are written out. This should not happen,
2331 but this way if it does, we get a R_M32R_NONE reloc instead
2332 of garbage. */
2333 s->contents = bfd_zalloc (dynobj, s->size);
2334 if (s->contents == NULL)
2335 return FALSE;
2338 if (htab->root.dynamic_sections_created)
2340 /* Add some entries to the .dynamic section. We fill in the
2341 values later, in m32r_elf_finish_dynamic_sections, but we
2342 must add the entries now so that we get the correct size for
2343 the .dynamic section. The DT_DEBUG entry is filled in by the
2344 dynamic linker and used by the debugger. */
2345 #define add_dynamic_entry(TAG, VAL) \
2346 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2348 if (info->executable)
2350 if (! add_dynamic_entry (DT_DEBUG, 0))
2351 return FALSE;
2354 if (htab->splt->size != 0)
2356 if (! add_dynamic_entry (DT_PLTGOT, 0)
2357 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2358 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2359 || ! add_dynamic_entry (DT_JMPREL, 0))
2360 return FALSE;
2363 if (relocs)
2365 if (! add_dynamic_entry (DT_RELA, 0)
2366 || ! add_dynamic_entry (DT_RELASZ, 0)
2367 || ! add_dynamic_entry (DT_RELAENT,
2368 sizeof (Elf32_External_Rela)))
2369 return FALSE;
2371 /* If any dynamic relocs apply to a read-only section,
2372 then we need a DT_TEXTREL entry. */
2373 if ((info->flags & DF_TEXTREL) == 0)
2374 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2375 info);
2377 if ((info->flags & DF_TEXTREL) != 0)
2379 if (! add_dynamic_entry (DT_TEXTREL, 0))
2380 return FALSE;
2384 #undef add_dynamic_entry
2386 return TRUE;
2389 /* Relocate an M32R/D ELF section.
2390 There is some attempt to make this function usable for many architectures,
2391 both for RELA and REL type relocs, if only to serve as a learning tool.
2393 The RELOCATE_SECTION function is called by the new ELF backend linker
2394 to handle the relocations for a section.
2396 The relocs are always passed as Rela structures; if the section
2397 actually uses Rel structures, the r_addend field will always be
2398 zero.
2400 This function is responsible for adjust the section contents as
2401 necessary, and (if using Rela relocs and generating a
2402 relocatable output file) adjusting the reloc addend as
2403 necessary.
2405 This function does not have to worry about setting the reloc
2406 address or the reloc symbol index.
2408 LOCAL_SYMS is a pointer to the swapped in local symbols.
2410 LOCAL_SECTIONS is an array giving the section in the input file
2411 corresponding to the st_shndx field of each local symbol.
2413 The global hash table entry for the global symbols can be found
2414 via elf_sym_hashes (input_bfd).
2416 When generating relocatable output, this function must handle
2417 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2418 going to be the section symbol corresponding to the output
2419 section, which means that the addend must be adjusted
2420 accordingly. */
2422 static bfd_boolean
2423 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2424 struct bfd_link_info *info,
2425 bfd *input_bfd,
2426 asection *input_section,
2427 bfd_byte *contents,
2428 Elf_Internal_Rela *relocs,
2429 Elf_Internal_Sym *local_syms,
2430 asection **local_sections)
2432 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2433 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2434 Elf_Internal_Rela *rel, *relend;
2435 /* Assume success. */
2436 bfd_boolean ret = TRUE;
2438 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2439 bfd *dynobj;
2440 bfd_vma *local_got_offsets;
2441 asection *sgot, *splt, *sreloc;
2442 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2444 dynobj = htab->root.dynobj;
2445 local_got_offsets = elf_local_got_offsets (input_bfd);
2447 sgot = htab->sgot;
2448 splt = htab->splt;
2449 sreloc = NULL;
2451 rel = relocs;
2452 relend = relocs + input_section->reloc_count;
2453 for (; rel < relend; rel++)
2455 int r_type;
2456 reloc_howto_type *howto;
2457 unsigned long r_symndx;
2458 struct elf_link_hash_entry *h;
2459 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2460 ensure it's zero (we use REL relocs, not RELA). Therefore this
2461 should be assigning zero to `addend', but for clarity we use
2462 `r_addend'. */
2463 bfd_vma addend = rel->r_addend;
2464 bfd_vma offset = rel->r_offset;
2465 bfd_vma relocation;
2466 Elf_Internal_Sym *sym;
2467 asection *sec;
2468 const char *sym_name;
2469 bfd_reloc_status_type r;
2470 const char *errmsg = NULL;
2471 bfd_boolean use_rel = FALSE;
2473 h = NULL;
2474 r_type = ELF32_R_TYPE (rel->r_info);
2475 if (r_type < 0 || r_type >= (int) R_M32R_max)
2477 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2478 input_bfd,
2479 (int) r_type);
2480 bfd_set_error (bfd_error_bad_value);
2481 ret = FALSE;
2482 continue;
2485 if ( r_type == R_M32R_GNU_VTENTRY
2486 || r_type == R_M32R_GNU_VTINHERIT
2487 || r_type == R_M32R_NONE
2488 || r_type == R_M32R_RELA_GNU_VTENTRY
2489 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2490 continue;
2492 if (r_type <= R_M32R_GNU_VTENTRY)
2493 use_rel = TRUE;
2495 howto = m32r_elf_howto_table + r_type;
2496 r_symndx = ELF32_R_SYM (rel->r_info);
2498 sym = NULL;
2499 sec = NULL;
2500 h = NULL;
2502 if (r_symndx < symtab_hdr->sh_info)
2504 /* Local symbol. */
2505 sym = local_syms + r_symndx;
2506 sec = local_sections[r_symndx];
2507 sym_name = "<local symbol>";
2509 if (!use_rel)
2511 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2512 addend = rel->r_addend;
2514 else
2516 relocation = (sec->output_section->vma
2517 + sec->output_offset
2518 + sym->st_value);
2521 else
2523 /* External symbol. */
2524 relocation = 0;
2526 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2527 while (h->root.type == bfd_link_hash_indirect
2528 || h->root.type == bfd_link_hash_warning)
2529 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2530 sym_name = h->root.root.string;
2532 if (h->root.type == bfd_link_hash_defined
2533 || h->root.type == bfd_link_hash_defweak)
2535 bfd_boolean dyn;
2536 sec = h->root.u.def.section;
2538 dyn = htab->root.dynamic_sections_created;
2539 sec = h->root.u.def.section;
2540 if (r_type == R_M32R_GOTPC24
2541 || (r_type == R_M32R_GOTPC_HI_ULO
2542 || r_type == R_M32R_GOTPC_HI_SLO
2543 || r_type == R_M32R_GOTPC_LO)
2544 || (r_type == R_M32R_26_PLTREL
2545 && h->plt.offset != (bfd_vma) -1)
2546 || ((r_type == R_M32R_GOT24
2547 || r_type == R_M32R_GOT16_HI_ULO
2548 || r_type == R_M32R_GOT16_HI_SLO
2549 || r_type == R_M32R_GOT16_LO)
2550 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2551 info->shared, h)
2552 && (! info->shared
2553 || (! info->symbolic && h->dynindx != -1)
2554 || !h->def_regular))
2555 || (info->shared
2556 && ((! info->symbolic && h->dynindx != -1)
2557 || !h->def_regular)
2558 && (((r_type == R_M32R_16_RELA
2559 || r_type == R_M32R_32_RELA
2560 || r_type == R_M32R_24_RELA
2561 || r_type == R_M32R_HI16_ULO_RELA
2562 || r_type == R_M32R_HI16_SLO_RELA
2563 || r_type == R_M32R_LO16_RELA)
2564 && !h->forced_local)
2565 || r_type == R_M32R_REL32
2566 || r_type == R_M32R_10_PCREL_RELA
2567 || r_type == R_M32R_18_PCREL_RELA
2568 || r_type == R_M32R_26_PCREL_RELA)
2569 && ((input_section->flags & SEC_ALLOC) != 0
2570 /* DWARF will emit R_M32R_16(24,32) relocations
2571 in its sections against symbols defined
2572 externally in shared libraries. We can't do
2573 anything with them here. */
2574 || ((input_section->flags & SEC_DEBUGGING) != 0
2575 && h->def_dynamic))))
2577 /* In these cases, we don't need the relocation
2578 value. We check specially because in some
2579 obscure cases sec->output_section will be NULL. */
2581 else if (sec->output_section != NULL)
2582 relocation = (h->root.u.def.value
2583 + sec->output_section->vma
2584 + sec->output_offset);
2585 else if (!info->relocatable)
2587 (*_bfd_error_handler)
2588 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2589 input_bfd,
2590 input_section,
2591 (long) rel->r_offset,
2592 howto->name,
2593 h->root.root.string);
2596 else if (h->root.type == bfd_link_hash_undefweak)
2598 else if (info->unresolved_syms_in_objects == RM_IGNORE
2599 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2601 else if (!info->relocatable)
2603 if (! ((*info->callbacks->undefined_symbol)
2604 (info, h->root.root.string, input_bfd,
2605 input_section, offset,
2606 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2607 || ELF_ST_VISIBILITY (h->other)))))
2608 return FALSE;
2612 if (sec != NULL && elf_discarded_section (sec))
2614 /* For relocs against symbols from removed linkonce sections,
2615 or sections discarded by a linker script, we just want the
2616 section contents zeroed. Avoid any special processing. */
2617 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2618 rel->r_info = 0;
2619 rel->r_addend = 0;
2620 continue;
2623 if (info->relocatable && !use_rel)
2625 /* This is a relocatable link. We don't have to change
2626 anything, unless the reloc is against a section symbol,
2627 in which case we have to adjust according to where the
2628 section symbol winds up in the output section. */
2629 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2630 rel->r_addend += sec->output_offset;
2631 continue;
2634 if (info->relocatable && use_rel)
2636 /* This is a relocatable link. We don't have to change
2637 anything, unless the reloc is against a section symbol,
2638 in which case we have to adjust according to where the
2639 section symbol winds up in the output section. */
2640 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2641 continue;
2643 addend += sec->output_offset;
2645 /* If partial_inplace, we need to store any additional addend
2646 back in the section. */
2647 if (! howto->partial_inplace)
2648 continue;
2649 /* ??? Here is a nice place to call a special_function
2650 like handler. */
2651 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2652 r = _bfd_relocate_contents (howto, input_bfd,
2653 addend, contents + offset);
2654 else
2656 Elf_Internal_Rela *lorel;
2658 /* We allow an arbitrary number of HI16 relocs before the
2659 LO16 reloc. This permits gcc to emit the HI and LO relocs
2660 itself. */
2661 for (lorel = rel + 1;
2662 (lorel < relend
2663 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2664 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2665 lorel++)
2666 continue;
2667 if (lorel < relend
2668 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2670 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2671 contents, addend);
2672 r = bfd_reloc_ok;
2674 else
2675 r = _bfd_relocate_contents (howto, input_bfd,
2676 addend, contents + offset);
2679 else
2681 /* Sanity check the address. */
2682 if (offset > high_address)
2684 r = bfd_reloc_outofrange;
2685 goto check_reloc;
2688 switch ((int) r_type)
2690 case R_M32R_GOTOFF:
2691 /* Relocation is relative to the start of the global offset
2692 table (for ld24 rx, #uimm24). eg access at label+addend
2694 ld24 rx. #label@GOTOFF + addend
2695 sub rx, r12. */
2697 BFD_ASSERT (sgot != NULL);
2699 relocation = -(relocation - sgot->output_section->vma);
2700 rel->r_addend = -rel->r_addend;
2701 break;
2703 case R_M32R_GOTOFF_HI_ULO:
2704 case R_M32R_GOTOFF_HI_SLO:
2705 case R_M32R_GOTOFF_LO:
2706 BFD_ASSERT (sgot != NULL);
2708 relocation -= sgot->output_section->vma;
2710 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2711 && ((relocation + rel->r_addend) & 0x8000))
2712 rel->r_addend += 0x10000;
2713 break;
2715 case R_M32R_GOTPC24:
2716 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2717 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2719 relocation = sgot->output_section->vma;
2720 break;
2722 case R_M32R_GOTPC_HI_ULO:
2723 case R_M32R_GOTPC_HI_SLO:
2724 case R_M32R_GOTPC_LO:
2726 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2727 bl .+4
2728 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2729 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2731 bl .+4
2732 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2733 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2735 relocation = sgot->output_section->vma;
2736 relocation -= (input_section->output_section->vma
2737 + input_section->output_offset
2738 + rel->r_offset);
2739 if ((r_type == R_M32R_GOTPC_HI_SLO)
2740 && ((relocation + rel->r_addend) & 0x8000))
2741 rel->r_addend += 0x10000;
2743 break;
2745 case R_M32R_GOT16_HI_ULO:
2746 case R_M32R_GOT16_HI_SLO:
2747 case R_M32R_GOT16_LO:
2748 /* Fall through. */
2749 case R_M32R_GOT24:
2750 /* Relocation is to the entry for this symbol in the global
2751 offset table. */
2752 BFD_ASSERT (sgot != NULL);
2754 if (h != NULL)
2756 bfd_boolean dyn;
2757 bfd_vma off;
2759 off = h->got.offset;
2760 BFD_ASSERT (off != (bfd_vma) -1);
2762 dyn = htab->root.dynamic_sections_created;
2763 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2764 || (info->shared
2765 && (info->symbolic
2766 || h->dynindx == -1
2767 || h->forced_local)
2768 && h->def_regular))
2770 /* This is actually a static link, or it is a
2771 -Bsymbolic link and the symbol is defined
2772 locally, or the symbol was forced to be local
2773 because of a version file. We must initialize
2774 this entry in the global offset table. Since the
2775 offset must always be a multiple of 4, we use the
2776 least significant bit to record whether we have
2777 initialized it already.
2779 When doing a dynamic link, we create a .rela.got
2780 relocation entry to initialize the value. This
2781 is done in the finish_dynamic_symbol routine. */
2782 if ((off & 1) != 0)
2783 off &= ~1;
2784 else
2786 bfd_put_32 (output_bfd, relocation,
2787 sgot->contents + off);
2788 h->got.offset |= 1;
2792 relocation = sgot->output_offset + off;
2794 else
2796 bfd_vma off;
2797 bfd_byte *loc;
2799 BFD_ASSERT (local_got_offsets != NULL
2800 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2802 off = local_got_offsets[r_symndx];
2804 /* The offset must always be a multiple of 4. We use
2805 the least significant bit to record whether we have
2806 already processed this entry. */
2807 if ((off & 1) != 0)
2808 off &= ~1;
2809 else
2811 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2813 if (info->shared)
2815 asection *srelgot;
2816 Elf_Internal_Rela outrel;
2818 /* We need to generate a R_M32R_RELATIVE reloc
2819 for the dynamic linker. */
2820 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2821 BFD_ASSERT (srelgot != NULL);
2823 outrel.r_offset = (sgot->output_section->vma
2824 + sgot->output_offset
2825 + off);
2826 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2827 outrel.r_addend = relocation;
2828 loc = srelgot->contents;
2829 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2830 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2831 ++srelgot->reloc_count;
2834 local_got_offsets[r_symndx] |= 1;
2837 relocation = sgot->output_offset + off;
2839 if ((r_type == R_M32R_GOT16_HI_SLO)
2840 && ((relocation + rel->r_addend) & 0x8000))
2841 rel->r_addend += 0x10000;
2843 break;
2845 case R_M32R_26_PLTREL:
2846 /* Relocation is to the entry for this symbol in the
2847 procedure linkage table. */
2849 /* The native assembler will generate a 26_PLTREL reloc
2850 for a local symbol if you assemble a call from one
2851 section to another when using -K pic. */
2852 if (h == NULL)
2853 break;
2855 if (h->forced_local)
2856 break;
2858 if (h->plt.offset == (bfd_vma) -1)
2859 /* We didn't make a PLT entry for this symbol. This
2860 happens when statically linking PIC code, or when
2861 using -Bsymbolic. */
2862 break;
2864 relocation = (splt->output_section->vma
2865 + splt->output_offset
2866 + h->plt.offset);
2867 break;
2869 case R_M32R_HI16_SLO_RELA:
2870 if ((relocation + rel->r_addend) & 0x8000)
2871 rel->r_addend += 0x10000;
2872 /* Fall through. */
2874 case R_M32R_16_RELA:
2875 case R_M32R_24_RELA:
2876 case R_M32R_32_RELA:
2877 case R_M32R_REL32:
2878 case R_M32R_10_PCREL_RELA:
2879 case R_M32R_18_PCREL_RELA:
2880 case R_M32R_26_PCREL_RELA:
2881 case R_M32R_HI16_ULO_RELA:
2882 case R_M32R_LO16_RELA:
2883 if (info->shared
2884 && r_symndx != 0
2885 && (input_section->flags & SEC_ALLOC) != 0
2886 && (( r_type != R_M32R_10_PCREL_RELA
2887 && r_type != R_M32R_18_PCREL_RELA
2888 && r_type != R_M32R_26_PCREL_RELA
2889 && r_type != R_M32R_REL32)
2890 || (h != NULL
2891 && h->dynindx != -1
2892 && (! info->symbolic
2893 || !h->def_regular))))
2895 Elf_Internal_Rela outrel;
2896 bfd_boolean skip, relocate;
2897 bfd_byte *loc;
2899 /* When generating a shared object, these relocations
2900 are copied into the output file to be resolved at run
2901 time. */
2902 if (sreloc == NULL)
2904 sreloc = _bfd_elf_get_dynamic_reloc_section
2905 (input_bfd, input_section, /*rela?*/ TRUE);
2906 if (sreloc == NULL)
2907 return FALSE;
2910 skip = FALSE;
2911 relocate = FALSE;
2913 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2914 info,
2915 input_section,
2916 rel->r_offset);
2917 if (outrel.r_offset == (bfd_vma) -1)
2918 skip = TRUE;
2919 else if (outrel.r_offset == (bfd_vma) -2)
2920 skip = relocate = TRUE;
2921 outrel.r_offset += (input_section->output_section->vma
2922 + input_section->output_offset);
2924 if (skip)
2925 memset (&outrel, 0, sizeof outrel);
2926 else if ( r_type == R_M32R_10_PCREL_RELA
2927 || r_type == R_M32R_18_PCREL_RELA
2928 || r_type == R_M32R_26_PCREL_RELA
2929 || r_type == R_M32R_REL32)
2931 BFD_ASSERT (h != NULL && h->dynindx != -1);
2932 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2933 outrel.r_addend = rel->r_addend;
2935 else
2937 /* h->dynindx may be -1 if this symbol was marked to
2938 become local. */
2939 if (h == NULL
2940 || ((info->symbolic || h->dynindx == -1)
2941 && h->def_regular))
2943 relocate = TRUE;
2944 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2945 outrel.r_addend = relocation + rel->r_addend;
2947 else
2949 BFD_ASSERT (h->dynindx != -1);
2950 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2951 outrel.r_addend = relocation + rel->r_addend;
2955 loc = sreloc->contents;
2956 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2957 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2958 ++sreloc->reloc_count;
2960 /* If this reloc is against an external symbol, we do
2961 not want to fiddle with the addend. Otherwise, we
2962 need to include the symbol value so that it becomes
2963 an addend for the dynamic reloc. */
2964 if (! relocate)
2965 continue;
2966 break;
2968 else if (r_type != R_M32R_10_PCREL_RELA)
2969 break;
2970 /* Fall through. */
2972 case (int) R_M32R_10_PCREL :
2973 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2974 contents, offset,
2975 sec, relocation, addend);
2976 goto check_reloc;
2978 case (int) R_M32R_HI16_SLO :
2979 case (int) R_M32R_HI16_ULO :
2981 Elf_Internal_Rela *lorel;
2983 /* We allow an arbitrary number of HI16 relocs before the
2984 LO16 reloc. This permits gcc to emit the HI and LO relocs
2985 itself. */
2986 for (lorel = rel + 1;
2987 (lorel < relend
2988 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2989 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2990 lorel++)
2991 continue;
2992 if (lorel < relend
2993 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2995 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2996 contents, relocation + addend);
2997 r = bfd_reloc_ok;
2999 else
3000 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3001 contents, offset,
3002 relocation, addend);
3005 goto check_reloc;
3007 case (int) R_M32R_SDA16_RELA:
3008 case (int) R_M32R_SDA16 :
3010 const char *name;
3012 BFD_ASSERT (sec != NULL);
3013 name = bfd_get_section_name (abfd, sec);
3015 if ( strcmp (name, ".sdata") == 0
3016 || strcmp (name, ".sbss") == 0
3017 || strcmp (name, ".scommon") == 0)
3019 bfd_vma sda_base;
3020 bfd *out_bfd = sec->output_section->owner;
3022 r = m32r_elf_final_sda_base (out_bfd, info,
3023 &errmsg,
3024 &sda_base);
3025 if (r != bfd_reloc_ok)
3027 ret = FALSE;
3028 goto check_reloc;
3031 /* At this point `relocation' contains the object's
3032 address. */
3033 relocation -= sda_base;
3034 /* Now it contains the offset from _SDA_BASE_. */
3036 else
3038 (*_bfd_error_handler)
3039 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3040 input_bfd,
3041 sec,
3042 sym_name,
3043 m32r_elf_howto_table[(int) r_type].name);
3044 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3045 ret = FALSE;
3046 continue;
3049 /* Fall through. */
3051 default : /* OLD_M32R_RELOC */
3053 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3054 contents, offset,
3055 relocation, addend);
3056 goto check_reloc;
3059 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3060 contents, rel->r_offset,
3061 relocation, rel->r_addend);
3065 check_reloc:
3067 if (r != bfd_reloc_ok)
3069 /* FIXME: This should be generic enough to go in a utility. */
3070 const char *name;
3072 if (h != NULL)
3073 name = h->root.root.string;
3074 else
3076 name = (bfd_elf_string_from_elf_section
3077 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3078 if (name == NULL || *name == '\0')
3079 name = bfd_section_name (input_bfd, sec);
3082 if (errmsg != NULL)
3083 goto common_error;
3085 switch (r)
3087 case bfd_reloc_overflow:
3088 if (! ((*info->callbacks->reloc_overflow)
3089 (info, (h ? &h->root : NULL), name, howto->name,
3090 (bfd_vma) 0, input_bfd, input_section, offset)))
3091 return FALSE;
3092 break;
3094 case bfd_reloc_undefined:
3095 if (! ((*info->callbacks->undefined_symbol)
3096 (info, name, input_bfd, input_section,
3097 offset, TRUE)))
3098 return FALSE;
3099 break;
3101 case bfd_reloc_outofrange:
3102 errmsg = _("internal error: out of range error");
3103 goto common_error;
3105 case bfd_reloc_notsupported:
3106 errmsg = _("internal error: unsupported relocation error");
3107 goto common_error;
3109 case bfd_reloc_dangerous:
3110 errmsg = _("internal error: dangerous error");
3111 goto common_error;
3113 default:
3114 errmsg = _("internal error: unknown error");
3115 /* fall through */
3117 common_error:
3118 if (!((*info->callbacks->warning)
3119 (info, errmsg, name, input_bfd, input_section,
3120 offset)))
3121 return FALSE;
3122 break;
3127 return ret;
3130 /* Finish up dynamic symbol handling. We set the contents of various
3131 dynamic sections here. */
3133 static bfd_boolean
3134 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3135 struct bfd_link_info *info,
3136 struct elf_link_hash_entry *h,
3137 Elf_Internal_Sym *sym)
3139 struct elf_m32r_link_hash_table *htab;
3140 bfd *dynobj;
3141 bfd_byte *loc;
3143 #ifdef DEBUG_PIC
3144 printf ("m32r_elf_finish_dynamic_symbol()\n");
3145 #endif
3147 htab = m32r_elf_hash_table (info);
3148 dynobj = htab->root.dynobj;
3150 if (h->plt.offset != (bfd_vma) -1)
3152 asection *splt;
3153 asection *sgot;
3154 asection *srela;
3156 bfd_vma plt_index;
3157 bfd_vma got_offset;
3158 Elf_Internal_Rela rela;
3160 /* This symbol has an entry in the procedure linkage table. Set
3161 it up. */
3163 BFD_ASSERT (h->dynindx != -1);
3165 splt = htab->splt;
3166 sgot = htab->sgotplt;
3167 srela = htab->srelplt;
3168 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3170 /* Get the index in the procedure linkage table which
3171 corresponds to this symbol. This is the index of this symbol
3172 in all the symbols for which we are making plt entries. The
3173 first entry in the procedure linkage table is reserved. */
3174 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3176 /* Get the offset into the .got table of the entry that
3177 corresponds to this function. Each .got entry is 4 bytes.
3178 The first three are reserved. */
3179 got_offset = (plt_index + 3) * 4;
3181 /* Fill in the entry in the procedure linkage table. */
3182 if (! info->shared)
3184 bfd_put_32 (output_bfd,
3185 (PLT_ENTRY_WORD0b
3186 + (((sgot->output_section->vma
3187 + sgot->output_offset
3188 + got_offset) >> 16) & 0xffff)),
3189 splt->contents + h->plt.offset);
3190 bfd_put_32 (output_bfd,
3191 (PLT_ENTRY_WORD1b
3192 + ((sgot->output_section->vma
3193 + sgot->output_offset
3194 + got_offset) & 0xffff)),
3195 splt->contents + h->plt.offset + 4);
3196 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3197 splt->contents + h->plt.offset + 8);
3198 bfd_put_32 (output_bfd,
3199 (PLT_ENTRY_WORD3
3200 + plt_index * sizeof (Elf32_External_Rela)),
3201 splt->contents + h->plt.offset + 12);
3202 bfd_put_32 (output_bfd,
3203 (PLT_ENTRY_WORD4
3204 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3205 splt->contents + h->plt.offset + 16);
3207 else
3209 bfd_put_32 (output_bfd,
3210 PLT_ENTRY_WORD0 + got_offset,
3211 splt->contents + h->plt.offset);
3212 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3213 splt->contents + h->plt.offset + 4);
3214 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3215 splt->contents + h->plt.offset + 8);
3216 bfd_put_32 (output_bfd,
3217 (PLT_ENTRY_WORD3
3218 + plt_index * sizeof (Elf32_External_Rela)),
3219 splt->contents + h->plt.offset + 12);
3220 bfd_put_32 (output_bfd,
3221 (PLT_ENTRY_WORD4
3222 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3223 splt->contents + h->plt.offset + 16);
3226 /* Fill in the entry in the global offset table. */
3227 bfd_put_32 (output_bfd,
3228 (splt->output_section->vma
3229 + splt->output_offset
3230 + h->plt.offset
3231 + 12), /* same offset */
3232 sgot->contents + got_offset);
3234 /* Fill in the entry in the .rela.plt section. */
3235 rela.r_offset = (sgot->output_section->vma
3236 + sgot->output_offset
3237 + got_offset);
3238 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3239 rela.r_addend = 0;
3240 loc = srela->contents;
3241 loc += plt_index * sizeof (Elf32_External_Rela);
3242 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3244 if (!h->def_regular)
3246 /* Mark the symbol as undefined, rather than as defined in
3247 the .plt section. Leave the value alone. */
3248 sym->st_shndx = SHN_UNDEF;
3252 if (h->got.offset != (bfd_vma) -1)
3254 asection *sgot;
3255 asection *srela;
3256 Elf_Internal_Rela rela;
3258 /* This symbol has an entry in the global offset table. Set it
3259 up. */
3261 sgot = htab->sgot;
3262 srela = htab->srelgot;
3263 BFD_ASSERT (sgot != NULL && srela != NULL);
3265 rela.r_offset = (sgot->output_section->vma
3266 + sgot->output_offset
3267 + (h->got.offset &~ 1));
3269 /* If this is a -Bsymbolic link, and the symbol is defined
3270 locally, we just want to emit a RELATIVE reloc. Likewise if
3271 the symbol was forced to be local because of a version file.
3272 The entry in the global offset table will already have been
3273 initialized in the relocate_section function. */
3274 if (info->shared
3275 && (info->symbolic
3276 || h->dynindx == -1
3277 || h->forced_local)
3278 && h->def_regular)
3280 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3281 rela.r_addend = (h->root.u.def.value
3282 + h->root.u.def.section->output_section->vma
3283 + h->root.u.def.section->output_offset);
3285 else
3287 BFD_ASSERT ((h->got.offset & 1) == 0);
3288 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3289 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3290 rela.r_addend = 0;
3293 loc = srela->contents;
3294 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3295 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3296 ++srela->reloc_count;
3299 if (h->needs_copy)
3301 asection *s;
3302 Elf_Internal_Rela rela;
3304 /* This symbols needs a copy reloc. Set it up. */
3306 BFD_ASSERT (h->dynindx != -1
3307 && (h->root.type == bfd_link_hash_defined
3308 || h->root.type == bfd_link_hash_defweak));
3310 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3311 ".rela.bss");
3312 BFD_ASSERT (s != NULL);
3314 rela.r_offset = (h->root.u.def.value
3315 + h->root.u.def.section->output_section->vma
3316 + h->root.u.def.section->output_offset);
3317 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3318 rela.r_addend = 0;
3319 loc = s->contents;
3320 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3321 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3322 ++s->reloc_count;
3325 /* Mark some specially defined symbols as absolute. */
3326 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3327 || h == htab->root.hgot)
3328 sym->st_shndx = SHN_ABS;
3330 return TRUE;
3334 /* Finish up the dynamic sections. */
3336 static bfd_boolean
3337 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3338 struct bfd_link_info *info)
3340 struct elf_m32r_link_hash_table *htab;
3341 bfd *dynobj;
3342 asection *sdyn;
3343 asection *sgot;
3345 #ifdef DEBUG_PIC
3346 printf ("m32r_elf_finish_dynamic_sections()\n");
3347 #endif
3349 htab = m32r_elf_hash_table (info);
3350 dynobj = htab->root.dynobj;
3352 sgot = htab->sgotplt;
3353 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3355 if (htab->root.dynamic_sections_created)
3357 asection *splt;
3358 Elf32_External_Dyn *dyncon, *dynconend;
3360 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3362 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3363 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3365 for (; dyncon < dynconend; dyncon++)
3367 Elf_Internal_Dyn dyn;
3368 const char *name;
3369 asection *s;
3371 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3373 switch (dyn.d_tag)
3375 default:
3376 break;
3378 case DT_PLTGOT:
3379 name = ".got";
3380 s = htab->sgot->output_section;
3381 goto get_vma;
3382 case DT_JMPREL:
3383 name = ".rela.plt";
3384 s = htab->srelplt->output_section;
3385 get_vma:
3386 BFD_ASSERT (s != NULL);
3387 dyn.d_un.d_ptr = s->vma;
3388 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3389 break;
3391 case DT_PLTRELSZ:
3392 s = htab->srelplt->output_section;
3393 BFD_ASSERT (s != NULL);
3394 dyn.d_un.d_val = s->size;
3395 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3396 break;
3398 case DT_RELASZ:
3399 /* My reading of the SVR4 ABI indicates that the
3400 procedure linkage table relocs (DT_JMPREL) should be
3401 included in the overall relocs (DT_RELA). This is
3402 what Solaris does. However, UnixWare can not handle
3403 that case. Therefore, we override the DT_RELASZ entry
3404 here to make it not include the JMPREL relocs. Since
3405 the linker script arranges for .rela.plt to follow all
3406 other relocation sections, we don't have to worry
3407 about changing the DT_RELA entry. */
3408 if (htab->srelplt != NULL)
3410 s = htab->srelplt->output_section;
3411 dyn.d_un.d_val -= s->size;
3413 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3414 break;
3418 /* Fill in the first entry in the procedure linkage table. */
3419 splt = htab->splt;
3420 if (splt && splt->size > 0)
3422 if (info->shared)
3424 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3425 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3426 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3427 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3428 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3430 else
3432 unsigned long addr;
3433 /* addr = .got + 4 */
3434 addr = sgot->output_section->vma + sgot->output_offset + 4;
3435 bfd_put_32 (output_bfd,
3436 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3437 splt->contents);
3438 bfd_put_32 (output_bfd,
3439 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3440 splt->contents + 4);
3441 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3442 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3443 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3446 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3447 PLT_ENTRY_SIZE;
3451 /* Fill in the first three entries in the global offset table. */
3452 if (sgot && sgot->size > 0)
3454 if (sdyn == NULL)
3455 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3456 else
3457 bfd_put_32 (output_bfd,
3458 sdyn->output_section->vma + sdyn->output_offset,
3459 sgot->contents);
3460 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3461 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3463 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3466 return TRUE;
3470 /* Set the right machine number. */
3472 static bfd_boolean
3473 m32r_elf_object_p (bfd *abfd)
3475 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3477 default:
3478 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3479 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3480 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3482 return TRUE;
3485 /* Store the machine number in the flags field. */
3487 static void
3488 m32r_elf_final_write_processing (bfd *abfd,
3489 bfd_boolean linker ATTRIBUTE_UNUSED)
3491 unsigned long val;
3493 switch (bfd_get_mach (abfd))
3495 default:
3496 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3497 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3498 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3501 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3502 elf_elfheader (abfd)->e_flags |= val;
3505 /* Function to keep M32R specific file flags. */
3507 static bfd_boolean
3508 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3510 BFD_ASSERT (!elf_flags_init (abfd)
3511 || elf_elfheader (abfd)->e_flags == flags);
3513 elf_elfheader (abfd)->e_flags = flags;
3514 elf_flags_init (abfd) = TRUE;
3515 return TRUE;
3518 /* Merge backend specific data from an object file to the output
3519 object file when linking. */
3521 static bfd_boolean
3522 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3524 flagword out_flags;
3525 flagword in_flags;
3527 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3528 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3529 return TRUE;
3531 in_flags = elf_elfheader (ibfd)->e_flags;
3532 out_flags = elf_elfheader (obfd)->e_flags;
3534 if (! elf_flags_init (obfd))
3536 /* If the input is the default architecture then do not
3537 bother setting the flags for the output architecture,
3538 instead allow future merges to do this. If no future
3539 merges ever set these flags then they will retain their
3540 unitialised values, which surprise surprise, correspond
3541 to the default values. */
3542 if (bfd_get_arch_info (ibfd)->the_default)
3543 return TRUE;
3545 elf_flags_init (obfd) = TRUE;
3546 elf_elfheader (obfd)->e_flags = in_flags;
3548 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3549 && bfd_get_arch_info (obfd)->the_default)
3550 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3551 bfd_get_mach (ibfd));
3553 return TRUE;
3556 /* Check flag compatibility. */
3557 if (in_flags == out_flags)
3558 return TRUE;
3560 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3562 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3563 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3564 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3566 (*_bfd_error_handler)
3567 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3569 bfd_set_error (bfd_error_bad_value);
3570 return FALSE;
3574 return TRUE;
3577 /* Display the flags field. */
3579 static bfd_boolean
3580 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3582 FILE * file = (FILE *) ptr;
3584 BFD_ASSERT (abfd != NULL && ptr != NULL);
3586 _bfd_elf_print_private_bfd_data (abfd, ptr);
3588 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3590 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3592 default:
3593 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3594 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3595 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3598 fputc ('\n', file);
3600 return TRUE;
3603 static asection *
3604 m32r_elf_gc_mark_hook (asection *sec,
3605 struct bfd_link_info *info,
3606 Elf_Internal_Rela *rel,
3607 struct elf_link_hash_entry *h,
3608 Elf_Internal_Sym *sym)
3610 if (h != NULL)
3611 switch (ELF32_R_TYPE (rel->r_info))
3613 case R_M32R_GNU_VTINHERIT:
3614 case R_M32R_GNU_VTENTRY:
3615 case R_M32R_RELA_GNU_VTINHERIT:
3616 case R_M32R_RELA_GNU_VTENTRY:
3617 return NULL;
3620 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3623 static bfd_boolean
3624 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3625 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3626 asection *sec ATTRIBUTE_UNUSED,
3627 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3629 /* Update the got entry reference counts for the section being removed. */
3630 Elf_Internal_Shdr *symtab_hdr;
3631 struct elf_link_hash_entry **sym_hashes;
3632 bfd_signed_vma *local_got_refcounts;
3633 const Elf_Internal_Rela *rel, *relend;
3635 if (info->relocatable)
3636 return TRUE;
3638 elf_section_data (sec)->local_dynrel = NULL;
3640 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3641 sym_hashes = elf_sym_hashes (abfd);
3642 local_got_refcounts = elf_local_got_refcounts (abfd);
3644 relend = relocs + sec->reloc_count;
3645 for (rel = relocs; rel < relend; rel++)
3647 unsigned long r_symndx;
3648 struct elf_link_hash_entry *h = NULL;
3650 r_symndx = ELF32_R_SYM (rel->r_info);
3651 if (r_symndx >= symtab_hdr->sh_info)
3653 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3654 while (h->root.type == bfd_link_hash_indirect
3655 || h->root.type == bfd_link_hash_warning)
3656 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3659 switch (ELF32_R_TYPE (rel->r_info))
3661 case R_M32R_GOT16_HI_ULO:
3662 case R_M32R_GOT16_HI_SLO:
3663 case R_M32R_GOT16_LO:
3664 case R_M32R_GOTOFF:
3665 case R_M32R_GOTOFF_HI_ULO:
3666 case R_M32R_GOTOFF_HI_SLO:
3667 case R_M32R_GOTOFF_LO:
3668 case R_M32R_GOT24:
3669 case R_M32R_GOTPC_HI_ULO:
3670 case R_M32R_GOTPC_HI_SLO:
3671 case R_M32R_GOTPC_LO:
3672 case R_M32R_GOTPC24:
3673 if (h != NULL)
3675 if (h->got.refcount > 0)
3676 h->got.refcount--;
3678 else
3680 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3681 local_got_refcounts[r_symndx]--;
3683 break;
3685 case R_M32R_16_RELA:
3686 case R_M32R_24_RELA:
3687 case R_M32R_32_RELA:
3688 case R_M32R_REL32:
3689 case R_M32R_HI16_ULO_RELA:
3690 case R_M32R_HI16_SLO_RELA:
3691 case R_M32R_LO16_RELA:
3692 case R_M32R_SDA16_RELA:
3693 case R_M32R_10_PCREL_RELA:
3694 case R_M32R_18_PCREL_RELA:
3695 case R_M32R_26_PCREL_RELA:
3696 if (h != NULL)
3698 struct elf_m32r_link_hash_entry *eh;
3699 struct elf_m32r_dyn_relocs **pp;
3700 struct elf_m32r_dyn_relocs *p;
3702 if (!info->shared && h->plt.refcount > 0)
3703 h->plt.refcount -= 1;
3705 eh = (struct elf_m32r_link_hash_entry *) h;
3707 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3708 if (p->sec == sec)
3710 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3711 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3712 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3713 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3714 p->pc_count -= 1;
3715 p->count -= 1;
3716 if (p->count == 0)
3717 *pp = p->next;
3718 break;
3721 break;
3723 case R_M32R_26_PLTREL:
3724 if (h != NULL)
3726 if (h->plt.refcount > 0)
3727 h->plt.refcount--;
3729 break;
3731 default:
3732 break;
3736 return TRUE;
3739 /* Look through the relocs for a section during the first phase.
3740 Since we don't do .gots or .plts, we just need to consider the
3741 virtual table relocs for gc. */
3743 static bfd_boolean
3744 m32r_elf_check_relocs (bfd *abfd,
3745 struct bfd_link_info *info,
3746 asection *sec,
3747 const Elf_Internal_Rela *relocs)
3749 Elf_Internal_Shdr *symtab_hdr;
3750 struct elf_link_hash_entry **sym_hashes;
3751 const Elf_Internal_Rela *rel;
3752 const Elf_Internal_Rela *rel_end;
3753 struct elf_m32r_link_hash_table *htab;
3754 bfd *dynobj;
3755 bfd_vma *local_got_offsets;
3756 asection *sgot, *srelgot, *sreloc;
3758 if (info->relocatable)
3759 return TRUE;
3761 sgot = srelgot = sreloc = NULL;
3763 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3764 sym_hashes = elf_sym_hashes (abfd);
3766 htab = m32r_elf_hash_table (info);
3767 dynobj = htab->root.dynobj;
3768 local_got_offsets = elf_local_got_offsets (abfd);
3770 rel_end = relocs + sec->reloc_count;
3771 for (rel = relocs; rel < rel_end; rel++)
3773 int r_type;
3774 struct elf_link_hash_entry *h;
3775 unsigned long r_symndx;
3777 r_symndx = ELF32_R_SYM (rel->r_info);
3778 r_type = ELF32_R_TYPE (rel->r_info);
3779 if (r_symndx < symtab_hdr->sh_info)
3780 h = NULL;
3781 else
3783 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3784 while (h->root.type == bfd_link_hash_indirect
3785 || h->root.type == bfd_link_hash_warning)
3786 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3789 /* Some relocs require a global offset table. */
3790 if (htab->sgot == NULL)
3792 switch (r_type)
3794 case R_M32R_GOT16_HI_ULO:
3795 case R_M32R_GOT16_HI_SLO:
3796 case R_M32R_GOTOFF:
3797 case R_M32R_GOTOFF_HI_ULO:
3798 case R_M32R_GOTOFF_HI_SLO:
3799 case R_M32R_GOTOFF_LO:
3800 case R_M32R_GOT16_LO:
3801 case R_M32R_GOTPC24:
3802 case R_M32R_GOTPC_HI_ULO:
3803 case R_M32R_GOTPC_HI_SLO:
3804 case R_M32R_GOTPC_LO:
3805 case R_M32R_GOT24:
3806 if (dynobj == NULL)
3807 htab->root.dynobj = dynobj = abfd;
3808 if (! create_got_section (dynobj, info))
3809 return FALSE;
3810 break;
3812 default:
3813 break;
3817 switch (r_type)
3819 case R_M32R_GOT16_HI_ULO:
3820 case R_M32R_GOT16_HI_SLO:
3821 case R_M32R_GOT16_LO:
3822 case R_M32R_GOT24:
3824 if (h != NULL)
3825 h->got.refcount += 1;
3826 else
3828 bfd_signed_vma *local_got_refcounts;
3830 /* This is a global offset table entry for a local
3831 symbol. */
3832 local_got_refcounts = elf_local_got_refcounts (abfd);
3833 if (local_got_refcounts == NULL)
3835 bfd_size_type size;
3837 size = symtab_hdr->sh_info;
3838 size *= sizeof (bfd_signed_vma);
3839 local_got_refcounts = bfd_zalloc (abfd, size);
3840 if (local_got_refcounts == NULL)
3841 return FALSE;
3842 elf_local_got_refcounts (abfd) = local_got_refcounts;
3844 local_got_refcounts[r_symndx] += 1;
3846 break;
3848 case R_M32R_26_PLTREL:
3849 /* This symbol requires a procedure linkage table entry. We
3850 actually build the entry in adjust_dynamic_symbol,
3851 because this might be a case of linking PIC code without
3852 linking in any dynamic objects, in which case we don't
3853 need to generate a procedure linkage table after all. */
3855 /* If this is a local symbol, we resolve it directly without
3856 creating a procedure linkage table entry. */
3857 if (h == NULL)
3858 continue;
3860 if (h->forced_local)
3861 break;
3863 h->needs_plt = 1;
3864 h->plt.refcount += 1;
3865 break;
3867 case R_M32R_16_RELA:
3868 case R_M32R_24_RELA:
3869 case R_M32R_32_RELA:
3870 case R_M32R_REL32:
3871 case R_M32R_HI16_ULO_RELA:
3872 case R_M32R_HI16_SLO_RELA:
3873 case R_M32R_LO16_RELA:
3874 case R_M32R_SDA16_RELA:
3875 case R_M32R_10_PCREL_RELA:
3876 case R_M32R_18_PCREL_RELA:
3877 case R_M32R_26_PCREL_RELA:
3879 if (h != NULL && !info->shared)
3881 h->non_got_ref = 1;
3882 h->plt.refcount += 1;
3885 /* If we are creating a shared library, and this is a reloc
3886 against a global symbol, or a non PC relative reloc
3887 against a local symbol, then we need to copy the reloc
3888 into the shared library. However, if we are linking with
3889 -Bsymbolic, we do not need to copy a reloc against a
3890 global symbol which is defined in an object we are
3891 including in the link (i.e., DEF_REGULAR is set). At
3892 this point we have not seen all the input files, so it is
3893 possible that DEF_REGULAR is not set now but will be set
3894 later (it is never cleared). We account for that
3895 possibility below by storing information in the
3896 dyn_relocs field of the hash table entry. A similar
3897 situation occurs when creating shared libraries and symbol
3898 visibility changes render the symbol local.
3900 If on the other hand, we are creating an executable, we
3901 may need to keep relocations for symbols satisfied by a
3902 dynamic library if we manage to avoid copy relocs for the
3903 symbol. */
3904 if ((info->shared
3905 && (sec->flags & SEC_ALLOC) != 0
3906 && (( r_type != R_M32R_26_PCREL_RELA
3907 && r_type != R_M32R_18_PCREL_RELA
3908 && r_type != R_M32R_10_PCREL_RELA
3909 && r_type != R_M32R_REL32)
3910 || (h != NULL
3911 && (! info->symbolic
3912 || h->root.type == bfd_link_hash_defweak
3913 || !h->def_regular))))
3914 || (!info->shared
3915 && (sec->flags & SEC_ALLOC) != 0
3916 && h != NULL
3917 && (h->root.type == bfd_link_hash_defweak
3918 || !h->def_regular)))
3920 struct elf_m32r_dyn_relocs *p;
3921 struct elf_m32r_dyn_relocs **head;
3923 if (dynobj == NULL)
3924 htab->root.dynobj = dynobj = abfd;
3926 /* When creating a shared object, we must copy these
3927 relocs into the output file. We create a reloc
3928 section in dynobj and make room for the reloc. */
3929 if (sreloc == NULL)
3931 sreloc = _bfd_elf_make_dynamic_reloc_section
3932 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3934 if (sreloc == NULL)
3935 return FALSE;
3938 /* If this is a global symbol, we count the number of
3939 relocations we need for this symbol. */
3940 if (h != NULL)
3941 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3942 else
3944 /* Track dynamic relocs needed for local syms too. */
3945 asection *s;
3946 void *vpp;
3947 Elf_Internal_Sym *isym;
3949 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3950 abfd, r_symndx);
3951 if (isym == NULL)
3952 return FALSE;
3954 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3955 if (s == NULL)
3956 s = sec;
3958 vpp = &elf_section_data (s)->local_dynrel;
3959 head = (struct elf_m32r_dyn_relocs **) vpp;
3962 p = *head;
3963 if (p == NULL || p->sec != sec)
3965 bfd_size_type amt = sizeof (*p);
3967 p = bfd_alloc (dynobj, amt);
3968 if (p == NULL)
3969 return FALSE;
3970 p->next = *head;
3971 *head = p;
3972 p->sec = sec;
3973 p->count = 0;
3974 p->pc_count = 0;
3977 p->count += 1;
3978 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3979 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3980 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3981 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3982 p->pc_count += 1;
3984 break;
3986 /* This relocation describes the C++ object vtable hierarchy.
3987 Reconstruct it for later use during GC. */
3988 case R_M32R_RELA_GNU_VTINHERIT:
3989 case R_M32R_GNU_VTINHERIT:
3990 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3991 return FALSE;
3992 break;
3994 /* This relocation describes which C++ vtable entries are actually
3995 used. Record for later use during GC. */
3996 case R_M32R_GNU_VTENTRY:
3997 BFD_ASSERT (h != NULL);
3998 if (h != NULL
3999 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4000 return FALSE;
4001 break;
4002 case R_M32R_RELA_GNU_VTENTRY:
4003 BFD_ASSERT (h != NULL);
4004 if (h != NULL
4005 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4006 return FALSE;
4007 break;
4011 return TRUE;
4014 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4016 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4017 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4018 { NULL, 0, 0, 0, 0 }
4021 static bfd_boolean
4022 m32r_elf_fake_sections (bfd *abfd,
4023 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4024 asection *sec)
4026 const char *name;
4028 name = bfd_get_section_name (abfd, sec);
4030 /* The generic elf_fake_sections will set up REL_HDR using the
4031 default kind of relocations. But, we may actually need both
4032 kinds of relocations, so we set up the second header here.
4034 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4035 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4036 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4037 of the resulting empty .rela.<section> sections starts with
4038 sh_offset == object size, and ld doesn't allow that. While the check
4039 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4040 avoided by not emitting those useless sections in the first place. */
4041 if ((sec->flags & SEC_RELOC) != 0)
4043 struct bfd_elf_section_data *esd;
4044 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4046 esd = elf_section_data (sec);
4047 BFD_ASSERT (esd->rel_hdr2 == NULL);
4048 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4049 if (!esd->rel_hdr2)
4050 return FALSE;
4051 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4052 !sec->use_rela_p);
4055 return TRUE;
4058 static enum elf_reloc_type_class
4059 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4061 switch ((int) ELF32_R_TYPE (rela->r_info))
4063 case R_M32R_RELATIVE: return reloc_class_relative;
4064 case R_M32R_JMP_SLOT: return reloc_class_plt;
4065 case R_M32R_COPY: return reloc_class_copy;
4066 default: return reloc_class_normal;
4070 #define ELF_ARCH bfd_arch_m32r
4071 #define ELF_MACHINE_CODE EM_M32R
4072 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4073 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4075 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4076 #define TARGET_BIG_NAME "elf32-m32r"
4077 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4078 #define TARGET_LITTLE_NAME "elf32-m32rle"
4080 #define elf_info_to_howto m32r_info_to_howto
4081 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4082 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4083 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4084 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4085 #define elf_backend_relocate_section m32r_elf_relocate_section
4086 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4087 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4088 #define elf_backend_check_relocs m32r_elf_check_relocs
4090 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4091 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4092 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4093 #define elf_backend_omit_section_dynsym \
4094 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4095 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4096 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4097 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4098 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4099 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4101 #define elf_backend_can_gc_sections 1
4102 /*#if !USE_REL
4103 #define elf_backend_rela_normal 1
4104 #endif*/
4105 #define elf_backend_can_refcount 1
4106 #define elf_backend_want_got_plt 1
4107 #define elf_backend_plt_readonly 1
4108 #define elf_backend_want_plt_sym 0
4109 #define elf_backend_got_header_size 12
4111 #define elf_backend_may_use_rel_p 1
4112 #ifdef USE_M32R_OLD_RELOC
4113 #define elf_backend_default_use_rela_p 0
4114 #define elf_backend_may_use_rela_p 0
4115 #else
4116 #define elf_backend_default_use_rela_p 1
4117 #define elf_backend_may_use_rela_p 1
4118 #define elf_backend_fake_sections m32r_elf_fake_sections
4119 #endif
4121 #define elf_backend_object_p m32r_elf_object_p
4122 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4123 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4124 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4125 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4126 #define elf_backend_special_sections m32r_elf_special_sections
4128 #include "elf32-target.h"
4130 #undef ELF_MAXPAGESIZE
4131 #define ELF_MAXPAGESIZE 0x1000
4133 #undef TARGET_BIG_SYM
4134 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4135 #undef TARGET_BIG_NAME
4136 #define TARGET_BIG_NAME "elf32-m32r-linux"
4137 #undef TARGET_LITTLE_SYM
4138 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4139 #undef TARGET_LITTLE_NAME
4140 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4141 #undef elf32_bed
4142 #define elf32_bed elf32_m32r_lin_bed
4144 #include "elf32-target.h"