2005-08-09 H.J. Lu <hongjiu.lu@intel.com>
[deliverable/binutils-gdb.git] / bfd / elf32-m32r.c
CommitLineData
252b5132 1/* M32R-specific support for 32-bit ELF.
3eb128b2 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
7898deda 3 Free Software Foundation, Inc.
252b5132 4
88845958 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
88845958
NC
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
252b5132 11
88845958
NC
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.
252b5132 16
88845958
NC
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
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132
RH
20
21#include "bfd.h"
22#include "sysdep.h"
23#include "libbfd.h"
24#include "elf-bfd.h"
25#include "elf/m32r.h"
26
252b5132
RH
27#define NOP_INSN 0x7000
28#define MAKE_PARALLEL(insn) ((insn) | 0x8000)
29
30/* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
33 to work with. */
6edf0760 34/* #define USE_REL 1
acf8aed4
AM
35
36#ifndef USE_REL
37#define USE_REL 0
6edf0760 38#endif */
47b0e7ad 39/* Use RELA. But use REL to link old objects for backwords compatibility. */
6edf0760
NC
40
41/* Functions for the M32R ELF linker. */
41978308 42
6edf0760
NC
43/* The name of the dynamic interpreter. This is put in the .interp
44 section. */
41978308 45
6edf0760 46#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
41978308 47
6edf0760 48/* The nop opcode we use. */
41978308 49
6edf0760 50#define M32R_NOP 0x7000f000
41978308 51
6edf0760 52#define PLT_EMPTY 0x10101010 /* RIE -> RIE */
41978308 53
6edf0760
NC
54/* The size in bytes of an entry in the procedure linkage table. */
55
56#define PLT_ENTRY_SIZE 20
57#define PLT_HEADER_SIZE 20
41978308 58
6edf0760
NC
59/* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
41978308 62
6edf0760
NC
63#define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64#define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65#define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66#define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67#define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
41978308 68
6edf0760
NC
69#define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70#define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71#define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72#define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73#define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
41978308 74
6edf0760
NC
75#define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76#define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77#define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78#define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79#define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80#define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81#define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
82
252b5132 83
47b0e7ad 84/* Utility to actually perform an R_M32R_10_PCREL reloc. */
252b5132 85
47b0e7ad
NC
86static bfd_reloc_status_type
87m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 reloc_howto_type *howto,
89 asection *input_section,
90 bfd_byte *data,
91 bfd_vma offset,
92 asection *symbol_section ATTRIBUTE_UNUSED,
93 bfd_vma symbol_value,
94 bfd_vma addend)
95{
96 bfd_signed_vma relocation;
97 unsigned long x;
98 bfd_reloc_status_type status;
252b5132 99
47b0e7ad
NC
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
252b5132 103
47b0e7ad
NC
104 relocation = symbol_value + addend;
105 /* Make it pc relative. */
106 relocation -= (input_section->output_section->vma
107 + input_section->output_offset);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation -= (offset & -(bfd_vma) 4);
252b5132 111
47b0e7ad
NC
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
114 else
115 status = bfd_reloc_ok;
252b5132 116
47b0e7ad
NC
117 x = bfd_get_16 (abfd, data + offset);
118 relocation >>= howto->rightshift;
119 relocation <<= howto->bitpos;
120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
252b5132 122
47b0e7ad
NC
123 return status;
124}
252b5132 125
47b0e7ad 126/* Handle the R_M32R_10_PCREL reloc. */
252b5132 127
47b0e7ad
NC
128static bfd_reloc_status_type
129m32r_elf_10_pcrel_reloc (bfd * abfd,
130 arelent * reloc_entry,
131 asymbol * symbol,
132 void * data,
133 asection * input_section,
134 bfd * output_bfd,
135 char ** error_message ATTRIBUTE_UNUSED)
136{
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd != NULL
139 && (symbol->flags & BSF_SECTION_SYM) == 0
140 && (! reloc_entry->howto->partial_inplace
141 || reloc_entry->addend == 0))
142 {
143 reloc_entry->address += input_section->output_offset;
144 return bfd_reloc_ok;
145 }
252b5132 146
47b0e7ad
NC
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
252b5132 150
47b0e7ad
NC
151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
152 input_section,
153 data, reloc_entry->address,
154 symbol->section,
155 (symbol->value
156 + symbol->section->output_section->vma
157 + symbol->section->output_offset),
158 reloc_entry->addend);
159}
252b5132 160
47b0e7ad
NC
161/* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
252b5132 163
47b0e7ad
NC
164static bfd_reloc_status_type
165m32r_elf_generic_reloc (bfd *input_bfd,
166 arelent *reloc_entry,
167 asymbol *symbol,
168 void * data,
169 asection *input_section,
170 bfd *output_bfd,
171 char **error_message ATTRIBUTE_UNUSED)
172{
173 bfd_reloc_status_type ret;
174 bfd_vma relocation;
175 bfd_byte *inplace_address;
252b5132 176
47b0e7ad
NC
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd != NULL
181 && (symbol->flags & BSF_SECTION_SYM) == 0
182 && reloc_entry->addend == 0)
183 {
184 reloc_entry->address += input_section->output_offset;
185 return bfd_reloc_ok;
186 }
6edf0760 187
47b0e7ad
NC
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
6edf0760 193
47b0e7ad
NC
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196 return bfd_reloc_outofrange;
6edf0760 197
47b0e7ad
NC
198 ret = bfd_reloc_ok;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
6edf0760 202
47b0e7ad
NC
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
205 relocation = 0;
206 else
207 relocation = symbol->value;
6edf0760 208
47b0e7ad
NC
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
211 {
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
214 }
6edf0760 215
47b0e7ad
NC
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
6edf0760 218
47b0e7ad
NC
219#define DOIT(x) \
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
6edf0760 223
47b0e7ad
NC
224 switch (reloc_entry->howto->size)
225 {
226 case 1:
227 {
228 short x = bfd_get_16 (input_bfd, inplace_address);
229 DOIT (x);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
231 }
232 break;
233 case 2:
234 {
235 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
236 DOIT (x);
237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
238 }
239 break;
240 default:
241 BFD_ASSERT (0);
242 }
6edf0760 243
47b0e7ad
NC
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
6edf0760 246
47b0e7ad
NC
247 return ret;
248}
6edf0760 249
47b0e7ad
NC
250/* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
6edf0760 255
47b0e7ad
NC
256static bfd_reloc_status_type
257m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 arelent *reloc_entry,
259 asymbol *symbol,
260 void * data ATTRIBUTE_UNUSED,
261 asection *input_section,
262 bfd *output_bfd,
263 char **error_message ATTRIBUTE_UNUSED)
264{
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd != NULL
267 && (symbol->flags & BSF_SECTION_SYM) == 0
268 && (! reloc_entry->howto->partial_inplace
269 || reloc_entry->addend == 0))
270 {
271 reloc_entry->address += input_section->output_offset;
272 return bfd_reloc_ok;
273 }
6edf0760 274
47b0e7ad
NC
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
6edf0760 278
47b0e7ad
NC
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
281 abort ();
282}
6edf0760 283
47b0e7ad
NC
284\f
285/* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
6edf0760 300
47b0e7ad
NC
301struct m32r_hi16
302{
303 struct m32r_hi16 *next;
304 bfd_byte *addr;
305 bfd_vma addend;
306};
307
308/* FIXME: This should not be a static variable. */
309
310static struct m32r_hi16 *m32r_hi16_list;
311
312static bfd_reloc_status_type
313m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 arelent *reloc_entry,
315 asymbol *symbol,
316 void * data,
317 asection *input_section,
318 bfd *output_bfd,
319 char **error_message ATTRIBUTE_UNUSED)
320{
321 bfd_reloc_status_type ret;
322 bfd_vma relocation;
323 struct m32r_hi16 *n;
324
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd != NULL
329 && (symbol->flags & BSF_SECTION_SYM) == 0
330 && reloc_entry->addend == 0)
331 {
332 reloc_entry->address += input_section->output_offset;
333 return bfd_reloc_ok;
334 }
335
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
338 return bfd_reloc_outofrange;
339
340 ret = bfd_reloc_ok;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
344
345 if (bfd_is_com_section (symbol->section))
346 relocation = 0;
347 else
348 relocation = symbol->value;
349
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
353
354 /* Save the information, and let LO16 do the actual relocation. */
355 n = bfd_malloc ((bfd_size_type) sizeof *n);
356 if (n == NULL)
357 return bfd_reloc_outofrange;
358 n->addr = (bfd_byte *) data + reloc_entry->address;
359 n->addend = relocation;
360 n->next = m32r_hi16_list;
361 m32r_hi16_list = n;
362
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
365
366 return ret;
367}
368
369/* Handle an M32R ELF HI16 reloc. */
370
371static void
372m32r_elf_relocate_hi16 (bfd *input_bfd,
373 int type,
374 Elf_Internal_Rela *relhi,
375 Elf_Internal_Rela *rello,
376 bfd_byte *contents,
377 bfd_vma addend)
378{
379 unsigned long insn;
380 bfd_vma addlo;
381
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
383
384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385 if (type == R_M32R_HI16_SLO)
386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
387 else
388 addlo &= 0xffff;
389
390 addend += ((insn & 0xffff) << 16) + addlo;
391
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
395 addend += 0x10000;
396
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
400}
401
402/* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
405
406static bfd_reloc_status_type
407m32r_elf_lo16_reloc (bfd *input_bfd,
408 arelent *reloc_entry,
409 asymbol *symbol,
410 void * data,
411 asection *input_section,
412 bfd *output_bfd,
413 char **error_message)
414{
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd != NULL
419 && (symbol->flags & BSF_SECTION_SYM) == 0
420 && reloc_entry->addend == 0)
421 {
422 reloc_entry->address += input_section->output_offset;
423 return bfd_reloc_ok;
424 }
425
426 if (m32r_hi16_list != NULL)
427 {
428 struct m32r_hi16 *l;
429
430 l = m32r_hi16_list;
431 while (l != NULL)
432 {
433 unsigned long insn;
434 unsigned long val;
435 unsigned long vallo;
436 struct m32r_hi16 *next;
437
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn = bfd_get_32 (input_bfd, l->addr);
442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val = ((insn & 0xffff) << 16) + vallo;
445 val += l->addend;
446
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
449 val += 0x10000;
450
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
453
454 next = l->next;
455 free (l);
456 l = next;
457 }
6edf0760 458
47b0e7ad
NC
459 m32r_hi16_list = NULL;
460 }
461
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 input_section, output_bfd, error_message);
469}
470
471\f
472static reloc_howto_type m32r_elf_howto_table[] =
473{
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
6edf0760
NC
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 32, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_bitfield, /* complain_on_overflow */
47b0e7ad
NC
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
6edf0760 484 FALSE, /* partial_inplace */
47b0e7ad
NC
485 0, /* src_mask */
486 0, /* dst_mask */
6edf0760
NC
487 FALSE), /* pcrel_offset */
488
47b0e7ad
NC
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
6edf0760 491 0, /* rightshift */
47b0e7ad
NC
492 1, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
6edf0760
NC
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_bitfield, /* complain_on_overflow */
47b0e7ad
NC
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
6edf0760
NC
502 FALSE), /* pcrel_offset */
503
47b0e7ad
NC
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
6edf0760
NC
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
47b0e7ad
NC
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
6edf0760
NC
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
47b0e7ad
NC
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
6edf0760
NC
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
097f809a 523 24, /* bitsize */
6edf0760
NC
524 FALSE, /* pc_relative */
525 0, /* bitpos */
47b0e7ad
NC
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
097f809a
NC
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
6edf0760
NC
532 FALSE), /* pcrel_offset */
533
47b0e7ad
NC
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
537 slot for pc. */
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
541 again. */
542 HOWTO (R_M32R_10_PCREL, /* type */
543 2, /* rightshift */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
545 10, /* bitsize */
546 TRUE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_signed, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE, /* partial_inplace */
552 0xff, /* src_mask */
553 0xff, /* dst_mask */
6edf0760
NC
554 TRUE), /* pcrel_offset */
555
47b0e7ad
NC
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
558 2, /* rightshift */
6edf0760
NC
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
47b0e7ad 561 TRUE, /* pc_relative */
6edf0760 562 0, /* bitpos */
47b0e7ad 563 complain_overflow_signed, /* complain_on_overflow */
6edf0760 564 bfd_elf_generic_reloc, /* special_function */
47b0e7ad 565 "R_M32R_18_PCREL", /* name */
6edf0760 566 FALSE, /* partial_inplace */
47b0e7ad
NC
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
6edf0760 570
47b0e7ad
NC
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
575 again. */
576 HOWTO (R_M32R_26_PCREL, /* type */
577 2, /* rightshift */
6edf0760 578 2, /* size (0 = byte, 1 = short, 2 = long) */
47b0e7ad
NC
579 26, /* bitsize */
580 TRUE, /* pc_relative */
6edf0760 581 0, /* bitpos */
47b0e7ad 582 complain_overflow_signed, /* complain_on_overflow */
6edf0760 583 bfd_elf_generic_reloc, /* special_function */
47b0e7ad 584 "R_M32R_26_PCREL", /* name */
6edf0760 585 FALSE, /* partial_inplace */
47b0e7ad
NC
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
6edf0760 589
47b0e7ad
NC
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
592 16, /* rightshift */
6edf0760
NC
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_dont, /* complain_on_overflow */
47b0e7ad
NC
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
6edf0760
NC
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
47b0e7ad
NC
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
6edf0760
NC
607 16, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
47b0e7ad
NC
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
6edf0760
NC
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
47b0e7ad 618 FALSE), /* pcrel_offset */
6edf0760 619
47b0e7ad
NC
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
622 0, /* rightshift */
6edf0760
NC
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
47b0e7ad
NC
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
6edf0760
NC
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
47b0e7ad 633 FALSE), /* pcrel_offset */
6edf0760 634
47b0e7ad
NC
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
6edf0760
NC
637 0, /* rightshift */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
47b0e7ad
NC
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
6edf0760
NC
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
47b0e7ad 648 FALSE), /* pcrel_offset */
097f809a 649
47b0e7ad
NC
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652 0, /* rightshift */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
654 0, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
667 0, /* rightshift */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
669 0, /* bitsize */
670 FALSE, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE, /* partial_inplace */
676 0, /* src_mask */
677 0, /* dst_mask */
678 FALSE), /* pcrel_offset */
679
680 EMPTY_HOWTO (13),
681 EMPTY_HOWTO (14),
682 EMPTY_HOWTO (15),
683 EMPTY_HOWTO (16),
684 EMPTY_HOWTO (17),
685 EMPTY_HOWTO (18),
686 EMPTY_HOWTO (19),
687 EMPTY_HOWTO (20),
688 EMPTY_HOWTO (21),
689 EMPTY_HOWTO (22),
690 EMPTY_HOWTO (23),
691 EMPTY_HOWTO (24),
692 EMPTY_HOWTO (25),
693 EMPTY_HOWTO (26),
694 EMPTY_HOWTO (27),
695 EMPTY_HOWTO (28),
696 EMPTY_HOWTO (29),
697 EMPTY_HOWTO (30),
698 EMPTY_HOWTO (31),
699 EMPTY_HOWTO (32),
700
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
097f809a
NC
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
47b0e7ad 708 complain_overflow_bitfield, /* complain_on_overflow */
097f809a 709 bfd_elf_generic_reloc, /* special_function */
47b0e7ad 710 "R_M32R_16_RELA", /* name */
097f809a 711 FALSE, /* partial_inplace */
47b0e7ad
NC
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
097f809a
NC
714 FALSE), /* pcrel_offset */
715
47b0e7ad
NC
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
718 0, /* rightshift */
097f809a 719 2, /* size (0 = byte, 1 = short, 2 = long) */
47b0e7ad 720 32, /* bitsize */
097f809a
NC
721 FALSE, /* pc_relative */
722 0, /* bitpos */
47b0e7ad
NC
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
097f809a 726 FALSE, /* partial_inplace */
47b0e7ad
NC
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
097f809a
NC
729 FALSE), /* pcrel_offset */
730
47b0e7ad
NC
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
097f809a
NC
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
47b0e7ad 735 24, /* bitsize */
097f809a
NC
736 FALSE, /* pc_relative */
737 0, /* bitpos */
47b0e7ad
NC
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
097f809a 741 FALSE, /* partial_inplace */
47b0e7ad
NC
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
097f809a 744 FALSE), /* pcrel_offset */
252b5132 745
47b0e7ad
NC
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
747 2, /* rightshift */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 10, /* bitsize */
750 TRUE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE, /* partial_inplace */
756 0xff, /* src_mask */
757 0xff, /* dst_mask */
758 TRUE), /* pcrel_offset */
252b5132 759
47b0e7ad
NC
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
762 2, /* rightshift */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 TRUE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
252b5132 774
47b0e7ad
NC
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
777 2, /* rightshift */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
779 26, /* bitsize */
780 TRUE, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
4c72e23a 789
47b0e7ad
NC
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
792 16, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
252b5132 804
47b0e7ad
NC
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
807 16, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
252b5132 819
47b0e7ad
NC
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
252b5132 834
47b0e7ad
NC
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
837 0, /* rightshift */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
839 16, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
252b5132 849
47b0e7ad
NC
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852 0, /* rightshift */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
854 0, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 0, /* dst_mask */
863 FALSE), /* pcrel_offset */
252b5132 864
47b0e7ad
NC
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 0, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0, /* dst_mask */
878 FALSE), /* pcrel_offset */
252b5132 879
157e7bd1
NC
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32, /* type */
882 0, /* rightshift */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
884 32, /* bitsize */
885 TRUE, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_bitfield, /* complain_on_overflow */
888 bfd_elf_generic_reloc,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE), /* pcrel_offset */
894
47b0e7ad
NC
895 EMPTY_HOWTO (46),
896 EMPTY_HOWTO (47),
252b5132 897
47b0e7ad
NC
898 /* Like R_M32R_24, but referring to the GOT table entry for
899 the symbol. */
900 HOWTO (R_M32R_GOT24, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 24, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_unsigned, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
8b125cde 913
47b0e7ad
NC
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL, /* type */
917 2, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 24, /* bitsize */
920 TRUE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_signed, /* complain_on_overflow */
923 bfd_elf_generic_reloc, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE), /* pcrel_offset */
8b125cde 929
47b0e7ad
NC
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY, /* type */
936 0, /* rightshift */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
938 32, /* bitsize */
939 FALSE, /* pc_relative */
940 0, /* bitpos */
941 complain_overflow_bitfield, /* complain_on_overflow */
942 bfd_elf_generic_reloc, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
8b125cde 948
47b0e7ad
NC
949 /* Like R_M32R_24, but used when setting global offset table
950 entries. */
951 HOWTO (R_M32R_GLOB_DAT, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_bitfield, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
8b125cde 964
47b0e7ad
NC
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 32, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
4c72e23a 979
47b0e7ad
NC
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
982 addend. */
983 HOWTO (R_M32R_RELATIVE, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 32, /* bitsize */
987 FALSE, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
4c72e23a 996
47b0e7ad
NC
997 HOWTO (R_M32R_GOTOFF, /* type */
998 0, /* rightshift */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 24, /* bitsize */
1001 FALSE, /* pc_relative */
1002 0, /* bitpos */
1003 complain_overflow_bitfield, /* complain_on_overflow */
1004 bfd_elf_generic_reloc, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
4c72e23a 1010
47b0e7ad
NC
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1012 table register. */
1013 HOWTO (R_M32R_GOTPC24, /* type */
1014 0, /* rightshift */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 24, /* bitsize */
1017 TRUE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_unsigned, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE), /* pcrel_offset */
4c72e23a 1026
47b0e7ad
NC
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028 the symbol. */
1029 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
4c72e23a 1042
47b0e7ad
NC
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044 the symbol. */
1045 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
8b125cde 1058
47b0e7ad
NC
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1060 the symbol. */
1061 HOWTO (R_M32R_GOT16_LO, /* type */
1062 0, /* rightshift */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 16, /* bitsize */
1065 FALSE, /* pc_relative */
1066 0, /* bitpos */
1067 complain_overflow_dont, /* complain_on_overflow */
1068 bfd_elf_generic_reloc, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
4c72e23a 1074
47b0e7ad
NC
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077 the symbol. */
1078 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 bfd_elf_generic_reloc, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE), /* pcrel_offset */
4c72e23a 1091
47b0e7ad
NC
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094 the symbol. */
1095 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE), /* pcrel_offset */
4c72e23a 1108
47b0e7ad
NC
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1111 the symbol. */
1112 HOWTO (R_M32R_GOTPC_LO, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE), /* pcrel_offset */
252b5132 1125
47b0e7ad
NC
1126 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
252b5132 1139
47b0e7ad
NC
1140 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
252b5132 1153
47b0e7ad
NC
1154 HOWTO (R_M32R_GOTOFF_LO, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 bfd_elf_generic_reloc, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167};
252b5132 1168
252b5132
RH
1169/* Map BFD reloc types to M32R ELF reloc types. */
1170
1171struct m32r_reloc_map
1172{
1173 bfd_reloc_code_real_type bfd_reloc_val;
1174 unsigned char elf_reloc_val;
1175};
1176
d5b2f13b 1177#ifdef USE_M32R_OLD_RELOC
6edf0760 1178static const struct m32r_reloc_map m32r_reloc_map_old[] =
252b5132
RH
1179{
1180 { BFD_RELOC_NONE, R_M32R_NONE },
1181 { BFD_RELOC_16, R_M32R_16 },
1182 { BFD_RELOC_32, R_M32R_32 },
1183 { BFD_RELOC_M32R_24, R_M32R_24 },
1184 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1185 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1186 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1187 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1188 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1189 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1190 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1191 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1192 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1193};
d5b2f13b 1194#else
6edf0760
NC
1195static const struct m32r_reloc_map m32r_reloc_map[] =
1196{
1197 { BFD_RELOC_NONE, R_M32R_NONE },
1198 { BFD_RELOC_16, R_M32R_16_RELA },
1199 { BFD_RELOC_32, R_M32R_32_RELA },
1200 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1201 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1202 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1203 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1204 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1205 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1206 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1207 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1208 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1209 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
157e7bd1 1210 { BFD_RELOC_32_PCREL, R_M32R_REL32 },
41978308 1211
6edf0760
NC
1212 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1213 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1214 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1215 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1216 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1217 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1218 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1219 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1220 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1221 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1222 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1225 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
097f809a
NC
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1228 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
6edf0760 1229};
d5b2f13b 1230#endif
6edf0760 1231
252b5132 1232static reloc_howto_type *
47b0e7ad
NC
1233bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 bfd_reloc_code_real_type code)
252b5132
RH
1235{
1236 unsigned int i;
1237
6edf0760
NC
1238#ifdef USE_M32R_OLD_RELOC
1239 for (i = 0;
1240 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1241 i++)
47b0e7ad
NC
1242 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1243 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1244
6edf0760
NC
1245#else /* ! USE_M32R_OLD_RELOC */
1246
252b5132
RH
1247 for (i = 0;
1248 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1249 i++)
47b0e7ad
NC
1250 if (m32r_reloc_map[i].bfd_reloc_val == code)
1251 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
6edf0760 1252#endif
252b5132
RH
1253
1254 return NULL;
1255}
1256
1257/* Set the howto pointer for an M32R ELF reloc. */
1258
1259static void
47b0e7ad
NC
1260m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1261 arelent *cache_ptr,
1262 Elf_Internal_Rela *dst)
252b5132
RH
1263{
1264 unsigned int r_type;
1265
1266 r_type = ELF32_R_TYPE (dst->r_info);
f12123c0 1267 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
252b5132
RH
1268 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1269}
6edf0760
NC
1270
1271static void
47b0e7ad
NC
1272m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1273 arelent *cache_ptr,
1274 Elf_Internal_Rela *dst)
6edf0760
NC
1275{
1276 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1277 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1278 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1279 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1280}
1281
252b5132
RH
1282\f
1283/* Given a BFD section, try to locate the corresponding ELF section
1284 index. */
1285
47b0e7ad
NC
1286static bfd_boolean
1287_bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1288 asection *sec,
1289 int *retval)
252b5132
RH
1290{
1291 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1292 {
1293 *retval = SHN_M32R_SCOMMON;
b34976b6 1294 return TRUE;
252b5132 1295 }
b34976b6 1296 return FALSE;
252b5132
RH
1297}
1298
1299/* M32R ELF uses two common sections. One is the usual one, and the other
1300 is for small objects. All the small objects are kept together, and then
1301 referenced via one register, which yields faster assembler code. It is
1302 up to the compiler to emit an instruction to load the register with
1303 _SDA_BASE. This is what we use for the small common section. This
1304 approach is copied from elf32-mips.c. */
1305static asection m32r_elf_scom_section;
1306static asymbol m32r_elf_scom_symbol;
1307static asymbol *m32r_elf_scom_symbol_ptr;
1308
1309/* Handle the special M32R section numbers that a symbol may use. */
1310
47b0e7ad
NC
1311static void
1312_bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
252b5132 1313{
47b0e7ad 1314 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
252b5132
RH
1315
1316 switch (elfsym->internal_elf_sym.st_shndx)
1317 {
1318 case SHN_M32R_SCOMMON:
1319 if (m32r_elf_scom_section.name == NULL)
1320 {
1321 /* Initialize the small common section. */
1322 m32r_elf_scom_section.name = ".scommon";
1323 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1324 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1325 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1326 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1327 m32r_elf_scom_symbol.name = ".scommon";
1328 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1329 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1330 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1331 }
1332 asym->section = &m32r_elf_scom_section;
1333 asym->value = elfsym->internal_elf_sym.st_size;
1334 break;
1335 }
1336}
1337
1338/* Hook called by the linker routine which adds symbols from an object
1339 file. We must handle the special M32R section numbers here.
1340 We also keep watching for whether we need to create the sdata special
1341 linker sections. */
1342
b34976b6 1343static bfd_boolean
47b0e7ad
NC
1344m32r_elf_add_symbol_hook (bfd *abfd,
1345 struct bfd_link_info *info,
1346 Elf_Internal_Sym *sym,
1347 const char **namep,
1348 flagword *flagsp ATTRIBUTE_UNUSED,
1349 asection **secp,
1350 bfd_vma *valp)
252b5132 1351{
1049f94e 1352 if (! info->relocatable
252b5132 1353 && (*namep)[0] == '_' && (*namep)[1] == 'S'
4ab82700 1354 && strcmp (*namep, "_SDA_BASE_") == 0
0eddce27 1355 && is_elf_hash_table (info->hash))
252b5132
RH
1356 {
1357 /* This is simpler than using _bfd_elf_create_linker_section
1358 (our needs are simpler than ppc's needs). Also
1359 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1360 section already exists a new one is created that follows it which
1361 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1362 struct elf_link_hash_entry *h;
14a793b2 1363 struct bfd_link_hash_entry *bh;
252b5132
RH
1364 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1365
6edf0760 1366 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
6edf0760
NC
1367 if (s == NULL)
1368 {
1369 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1370 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1371
3496cb2a
L
1372 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1373 flags);
6edf0760
NC
1374 if (s == NULL)
1375 return FALSE;
6edf0760
NC
1376 bfd_set_section_alignment (abfd, s, 2);
1377 }
1378
1379 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1380 FALSE, FALSE, FALSE);
1381
1382 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1383 && !(_bfd_generic_link_add_one_symbol (info,
1384 abfd,
1385 "_SDA_BASE_",
1386 BSF_GLOBAL,
1387 s,
1388 (bfd_vma) 32768,
47b0e7ad 1389 NULL,
6edf0760
NC
1390 FALSE,
1391 get_elf_backend_data (abfd)->collect,
1392 &bh)))
1393 return FALSE;
1394 h = (struct elf_link_hash_entry *) bh;
1395 h->type = STT_OBJECT;
1396 }
1397
1398 switch (sym->st_shndx)
1399 {
1400 case SHN_M32R_SCOMMON:
1401 *secp = bfd_make_section_old_way (abfd, ".scommon");
1402 (*secp)->flags |= SEC_IS_COMMON;
1403 *valp = sym->st_size;
1404 break;
1405 }
1406
1407 return TRUE;
1408}
1409
1410/* We have to figure out the SDA_BASE value, so that we can adjust the
1411 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1412 BFD. If we can't find it, we're stuck. We cache it in the ELF
1413 target data. We don't need to adjust the symbol value for an
1414 external symbol if we are producing relocatable output. */
1415
1416static bfd_reloc_status_type
47b0e7ad
NC
1417m32r_elf_final_sda_base (bfd *output_bfd,
1418 struct bfd_link_info *info,
1419 const char **error_message,
1420 bfd_vma *psb)
6edf0760
NC
1421{
1422 if (elf_gp (output_bfd) == 0)
1423 {
1424 struct bfd_link_hash_entry *h;
1425
1426 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
47b0e7ad 1427 if (h != NULL && h->type == bfd_link_hash_defined)
6edf0760
NC
1428 elf_gp (output_bfd) = (h->u.def.value
1429 + h->u.def.section->output_section->vma
1430 + h->u.def.section->output_offset);
1431 else
1432 {
1433 /* Only get the error once. */
1434 *psb = elf_gp (output_bfd) = 4;
1435 *error_message =
1436 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1437 return bfd_reloc_dangerous;
1438 }
1439 }
1440 *psb = elf_gp (output_bfd);
1441 return bfd_reloc_ok;
1442}
1443\f
1444/* Return size of a PLT entry. */
1445#define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1446
1447/* The m32r linker needs to keep track of the number of relocs that it
1448 decides to copy in check_relocs for each symbol. This is so that
1449 it can discard PC relative relocs if it doesn't need them when
1450 linking with -Bsymbolic. We store the information in a field
1451 extending the regular ELF linker hash table. */
1452
1453/* This structure keeps track of the number of PC relative relocs we
1454 have copied for a given symbol. */
1455
1456struct elf_m32r_pcrel_relocs_copied
1457{
1458 /* Next section. */
1459 struct elf_m32r_pcrel_relocs_copied *next;
1460 /* A section in dynobj. */
1461 asection *section;
1462 /* Number of relocs copied in this section. */
1463 bfd_size_type count;
1464};
1465
1466/* The sh linker needs to keep track of the number of relocs that it
1467 decides to copy as dynamic relocs in check_relocs for each symbol.
1468 This is so that it can later discard them if they are found to be
1469 unnecessary. We store the information in a field extending the
1470 regular ELF linker hash table. */
1471
1472struct elf_m32r_dyn_relocs
1473{
1474 struct elf_m32r_dyn_relocs *next;
1475
1476 /* The input section of the reloc. */
1477 asection *sec;
1478
1479 /* Total number of relocs copied for the input section. */
1480 bfd_size_type count;
1481
1482 /* Number of pc-relative relocs copied for the input section. */
1483 bfd_size_type pc_count;
1484};
1485
1486
1487/* m32r ELF linker hash entry. */
1488
1489struct elf_m32r_link_hash_entry
1490{
1491 struct elf_link_hash_entry root;
1492
1493 /* Track dynamic relocs copied for this symbol. */
1494 struct elf_m32r_dyn_relocs *dyn_relocs;
6edf0760
NC
1495};
1496
1497/* m32r ELF linker hash table. */
1498
1499struct elf_m32r_link_hash_table
1500{
1501 struct elf_link_hash_table root;
1502
1503 /* Short-cuts to get to dynamic linker sections. */
1504 asection *sgot;
1505 asection *sgotplt;
1506 asection *srelgot;
1507 asection *splt;
1508 asection *srelplt;
1509 asection *sdynbss;
1510 asection *srelbss;
1511
1512 /* Small local sym to section mapping cache. */
1513 struct sym_sec_cache sym_sec;
1514};
1515
1516/* Traverse an m32r ELF linker hash table. */
1517
1518#define m32r_elf_link_hash_traverse(table, func, info) \
1519 (elf_link_hash_traverse \
1520 (&(table)->root, \
47b0e7ad 1521 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
6edf0760
NC
1522 (info)))
1523
1524/* Get the m32r ELF linker hash table from a link_info structure. */
1525
1526
1527#define m32r_elf_hash_table(p) \
1528 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1529
1530/* Create an entry in an m32r ELF linker hash table. */
6edf0760
NC
1531
1532static struct bfd_hash_entry *
47b0e7ad
NC
1533m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1534 struct bfd_hash_table *table,
1535 const char *string)
6edf0760
NC
1536{
1537 struct elf_m32r_link_hash_entry *ret =
1538 (struct elf_m32r_link_hash_entry *) entry;
41978308 1539
6edf0760
NC
1540 /* Allocate the structure if it has not already been allocated by a
1541 subclass. */
47b0e7ad
NC
1542 if (ret == NULL)
1543 ret = bfd_hash_allocate (table,
1544 sizeof (struct elf_m32r_link_hash_entry));
1545 if (ret == NULL)
1546 return NULL;
41978308 1547
6edf0760
NC
1548 /* Call the allocation method of the superclass. */
1549 ret = ((struct elf_m32r_link_hash_entry *)
1550 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1551 table, string));
47b0e7ad 1552 if (ret != NULL)
6edf0760
NC
1553 {
1554 struct elf_m32r_link_hash_entry *eh;
41978308 1555
6edf0760
NC
1556 eh = (struct elf_m32r_link_hash_entry *) ret;
1557 eh->dyn_relocs = NULL;
6edf0760 1558 }
41978308 1559
6edf0760
NC
1560 return (struct bfd_hash_entry *) ret;
1561}
1562
1563/* Create an m32r ELF linker hash table. */
6edf0760
NC
1564
1565static struct bfd_link_hash_table *
47b0e7ad 1566m32r_elf_link_hash_table_create (bfd *abfd)
6edf0760
NC
1567{
1568 struct elf_m32r_link_hash_table *ret;
1569 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
41978308 1570
47b0e7ad
NC
1571 ret = bfd_malloc (amt);
1572 if (ret == NULL)
6edf0760 1573 return NULL;
41978308 1574
6edf0760
NC
1575 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
1576 m32r_elf_link_hash_newfunc))
1577 {
1578 free (ret);
1579 return NULL;
1580 }
41978308 1581
6edf0760
NC
1582 ret->sgot = NULL;
1583 ret->sgotplt = NULL;
1584 ret->srelgot = NULL;
1585 ret->splt = NULL;
1586 ret->srelplt = NULL;
1587 ret->sdynbss = NULL;
1588 ret->srelbss = NULL;
1589 ret->sym_sec.abfd = NULL;
41978308 1590
6edf0760
NC
1591 return &ret->root.root;
1592}
1593
1594/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1595 shortcuts to them in our hash table. */
6edf0760
NC
1596
1597static bfd_boolean
47b0e7ad 1598create_got_section (bfd *dynobj, struct bfd_link_info *info)
6edf0760
NC
1599{
1600 struct elf_m32r_link_hash_table *htab;
1601
1602 if (! _bfd_elf_create_got_section (dynobj, info))
1603 return FALSE;
1604
1605 htab = m32r_elf_hash_table (info);
1606 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1607 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1608 if (! htab->sgot || ! htab->sgotplt)
1609 abort ();
1610
3496cb2a
L
1611 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1612 (SEC_ALLOC
1613 | SEC_LOAD
1614 | SEC_HAS_CONTENTS
1615 | SEC_IN_MEMORY
1616 | SEC_LINKER_CREATED
1617 | SEC_READONLY));
6edf0760 1618 if (htab->srelgot == NULL
6edf0760
NC
1619 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1620 return FALSE;
1621
1622 return TRUE;
1623}
1624
1625/* Create dynamic sections when linking against a dynamic object. */
1626
1627static bfd_boolean
47b0e7ad 1628m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
6edf0760
NC
1629{
1630 struct elf_m32r_link_hash_table *htab;
1631 flagword flags, pltflags;
47b0e7ad 1632 asection *s;
6edf0760
NC
1633 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1634 int ptralign = 2; /* 32bit */
1635
1636 htab = m32r_elf_hash_table (info);
1637
1638 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1639 .rel[a].bss sections. */
6edf0760
NC
1640 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1641 | SEC_LINKER_CREATED);
1642
1643 pltflags = flags;
1644 pltflags |= SEC_CODE;
1645 if (bed->plt_not_loaded)
1646 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1647 if (bed->plt_readonly)
1648 pltflags |= SEC_READONLY;
1649
3496cb2a 1650 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
6edf0760
NC
1651 htab->splt = s;
1652 if (s == NULL
6edf0760
NC
1653 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1654 return FALSE;
1655
1656 if (bed->want_plt_sym)
1657 {
1658 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1659 .plt section. */
41978308
AM
1660 struct bfd_link_hash_entry *bh = NULL;
1661 struct elf_link_hash_entry *h;
47b0e7ad 1662
6edf0760
NC
1663 if (! (_bfd_generic_link_add_one_symbol
1664 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
47b0e7ad 1665 (bfd_vma) 0, NULL, FALSE,
41978308 1666 get_elf_backend_data (abfd)->collect, &bh)))
6edf0760 1667 return FALSE;
41978308 1668 h = (struct elf_link_hash_entry *) bh;
f5385ebf 1669 h->def_regular = 1;
6edf0760
NC
1670 h->type = STT_OBJECT;
1671
1672 if (info->shared
c152c796 1673 && ! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC
1674 return FALSE;
1675 }
1676
3496cb2a
L
1677 s = bfd_make_section_with_flags (abfd,
1678 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1679 flags | SEC_READONLY);
6edf0760
NC
1680 htab->srelplt = s;
1681 if (s == NULL
6edf0760
NC
1682 || ! bfd_set_section_alignment (abfd, s, ptralign))
1683 return FALSE;
1684
1685 if (htab->sgot == NULL
1686 && ! create_got_section (abfd, info))
1687 return FALSE;
1688
1689 {
1690 const char *secname;
1691 char *relname;
1692 flagword secflags;
1693 asection *sec;
1694
1695 for (sec = abfd->sections; sec; sec = sec->next)
1696 {
1697 secflags = bfd_get_section_flags (abfd, sec);
1698 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1699 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1700 continue;
1701 secname = bfd_get_section_name (abfd, sec);
47b0e7ad 1702 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
6edf0760
NC
1703 strcpy (relname, ".rela");
1704 strcat (relname, secname);
1705 if (bfd_get_section_by_name (abfd, secname))
1706 continue;
3496cb2a
L
1707 s = bfd_make_section_with_flags (abfd, relname,
1708 flags | SEC_READONLY);
6edf0760 1709 if (s == NULL
6edf0760
NC
1710 || ! bfd_set_section_alignment (abfd, s, ptralign))
1711 return FALSE;
1712 }
1713 }
1714
1715 if (bed->want_dynbss)
1716 {
1717 /* The .dynbss section is a place to put symbols which are defined
1718 by dynamic objects, are referenced by regular objects, and are
1719 not functions. We must allocate space for them in the process
1720 image and use a R_*_COPY reloc to tell the dynamic linker to
1721 initialize them at run time. The linker script puts the .dynbss
1722 section into the .bss section of the final image. */
3496cb2a
L
1723 s = bfd_make_section_with_flags (abfd, ".dynbss",
1724 SEC_ALLOC | SEC_LINKER_CREATED);
6edf0760 1725 htab->sdynbss = s;
3496cb2a 1726 if (s == NULL)
6edf0760
NC
1727 return FALSE;
1728 /* The .rel[a].bss section holds copy relocs. This section is not
1729 normally needed. We need to create it here, though, so that the
1730 linker will map it to an output section. We can't just create it
1731 only if we need it, because we will not know whether we need it
1732 until we have seen all the input files, and the first time the
1733 main linker code calls BFD after examining all the input files
1734 (size_dynamic_sections) the input sections have already been
1735 mapped to the output sections. If the section turns out not to
1736 be needed, we can discard it later. We will never need this
1737 section when generating a shared object, since they do not use
1738 copy relocs. */
1739 if (! info->shared)
1740 {
3496cb2a
L
1741 s = bfd_make_section_with_flags (abfd,
1742 (bed->default_use_rela_p
1743 ? ".rela.bss" : ".rel.bss"),
1744 flags | SEC_READONLY);
6edf0760
NC
1745 htab->srelbss = s;
1746 if (s == NULL
6edf0760
NC
1747 || ! bfd_set_section_alignment (abfd, s, ptralign))
1748 return FALSE;
1749 }
1750 }
1751
1752 return TRUE;
1753}
1754
1755/* Copy the extra info we tack onto an elf_link_hash_entry. */
41978308 1756
6edf0760
NC
1757static void
1758m32r_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
1759 struct elf_link_hash_entry *dir,
1760 struct elf_link_hash_entry *ind)
1761{
47b0e7ad
NC
1762 struct elf_m32r_link_hash_entry * edir;
1763 struct elf_m32r_link_hash_entry * eind;
41978308 1764
6edf0760
NC
1765 edir = (struct elf_m32r_link_hash_entry *) dir;
1766 eind = (struct elf_m32r_link_hash_entry *) ind;
41978308 1767
6edf0760
NC
1768 if (eind->dyn_relocs != NULL)
1769 {
1770 if (edir->dyn_relocs != NULL)
1771 {
1772 struct elf_m32r_dyn_relocs **pp;
1773 struct elf_m32r_dyn_relocs *p;
41978308 1774
6edf0760
NC
1775 if (ind->root.type == bfd_link_hash_indirect)
1776 abort ();
41978308 1777
6edf0760
NC
1778 /* Add reloc counts against the weak sym to the strong sym
1779 list. Merge any entries against the same section. */
47b0e7ad 1780 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
6edf0760
NC
1781 {
1782 struct elf_m32r_dyn_relocs *q;
41978308 1783
6edf0760
NC
1784 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1785 if (q->sec == p->sec)
1786 {
1787 q->pc_count += p->pc_count;
1788 q->count += p->count;
1789 *pp = p->next;
1790 break;
1791 }
1792 if (q == NULL)
1793 pp = &p->next;
1794 }
1795 *pp = edir->dyn_relocs;
1796 }
41978308 1797
6edf0760
NC
1798 edir->dyn_relocs = eind->dyn_relocs;
1799 eind->dyn_relocs = NULL;
1800 }
41978308 1801
6edf0760
NC
1802 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
1803}
1804
1805\f
1806/* Adjust a symbol defined by a dynamic object and referenced by a
1807 regular object. The current definition is in some section of the
1808 dynamic object, but we're not including those sections. We have to
1809 change the definition to something the rest of the link can
1810 understand. */
41978308 1811
6edf0760 1812static bfd_boolean
47b0e7ad
NC
1813m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1814 struct elf_link_hash_entry *h)
6edf0760
NC
1815{
1816 struct elf_m32r_link_hash_table *htab;
1817 struct elf_m32r_link_hash_entry *eh;
1818 struct elf_m32r_dyn_relocs *p;
1819 bfd *dynobj;
1820 asection *s;
1821 unsigned int power_of_two;
1822
1823#ifdef DEBUG_PIC
47b0e7ad 1824 printf ("m32r_elf_adjust_dynamic_symbol()\n");
6edf0760 1825#endif
41978308 1826
6edf0760 1827 dynobj = elf_hash_table (info)->dynobj;
41978308 1828
6edf0760
NC
1829 /* Make sure we know what is going on here. */
1830 BFD_ASSERT (dynobj != NULL
f5385ebf 1831 && (h->needs_plt
f6e332e6 1832 || h->u.weakdef != NULL
f5385ebf
AM
1833 || (h->def_dynamic
1834 && h->ref_regular
1835 && !h->def_regular)));
6edf0760 1836
6edf0760
NC
1837 /* If this is a function, put it in the procedure linkage table. We
1838 will fill in the contents of the procedure linkage table later,
1839 when we know the address of the .got section. */
1840 if (h->type == STT_FUNC
f5385ebf 1841 || h->needs_plt)
6edf0760
NC
1842 {
1843 if (! info->shared
f5385ebf
AM
1844 && !h->def_dynamic
1845 && !h->ref_dynamic
6edf0760
NC
1846 && h->root.type != bfd_link_hash_undefweak
1847 && h->root.type != bfd_link_hash_undefined)
1848 {
1849 /* This case can occur if we saw a PLT reloc in an input
1850 file, but the symbol was never referred to by a dynamic
1851 object. In such a case, we don't actually need to build
1852 a procedure linkage table, and we can just do a PCREL
1853 reloc instead. */
1854 h->plt.offset = (bfd_vma) -1;
f5385ebf 1855 h->needs_plt = 0;
6edf0760
NC
1856 }
1857
1858 return TRUE;
1859 }
1860 else
1861 h->plt.offset = (bfd_vma) -1;
41978308 1862
6edf0760
NC
1863 /* If this is a weak symbol, and there is a real definition, the
1864 processor independent code will have arranged for us to see the
1865 real definition first, and we can just use the same value. */
f6e332e6 1866 if (h->u.weakdef != NULL)
6edf0760 1867 {
f6e332e6
AM
1868 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1869 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1870 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1871 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6edf0760
NC
1872 return TRUE;
1873 }
41978308 1874
6edf0760
NC
1875 /* This is a reference to a symbol defined by a dynamic object which
1876 is not a function. */
41978308 1877
6edf0760
NC
1878 /* If we are creating a shared library, we must presume that the
1879 only references to the symbol are via the global offset table.
1880 For such cases we need not do anything here; the relocations will
1881 be handled correctly by relocate_section. */
1882 if (info->shared)
1883 return TRUE;
41978308 1884
6edf0760
NC
1885 /* If there are no references to this symbol that do not use the
1886 GOT, we don't need to generate a copy reloc. */
f5385ebf 1887 if (!h->non_got_ref)
6edf0760
NC
1888 return TRUE;
1889
1890 /* If -z nocopyreloc was given, we won't generate them either. */
1891 if (info->nocopyreloc)
1892 {
f5385ebf 1893 h->non_got_ref = 0;
6edf0760
NC
1894 return TRUE;
1895 }
1896
1897 eh = (struct elf_m32r_link_hash_entry *) h;
1898 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1899 {
1900 s = p->sec->output_section;
1901 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1902 break;
1903 }
1904
1905 /* If we didn't find any dynamic relocs in sections which needs the
1906 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1907 the copy reloc. */
1908 if (p == NULL)
1909 {
f5385ebf 1910 h->non_got_ref = 0;
6edf0760
NC
1911 return TRUE;
1912 }
1913
1914 /* We must allocate the symbol in our .dynbss section, which will
1915 become part of the .bss section of the executable. There will be
1916 an entry for this symbol in the .dynsym section. The dynamic
1917 object will contain position independent code, so all references
1918 from the dynamic object to this symbol will go through the global
1919 offset table. The dynamic linker will use the .dynsym entry to
1920 determine the address it must put in the global offset table, so
1921 both the dynamic object and the regular object will refer to the
1922 same memory location for the variable. */
41978308 1923
6edf0760
NC
1924 htab = m32r_elf_hash_table (info);
1925 s = htab->sdynbss;
1926 BFD_ASSERT (s != NULL);
41978308 1927
6edf0760
NC
1928 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1929 to copy the initial value out of the dynamic object and into the
1930 runtime process image. We need to remember the offset into the
1931 .rela.bss section we are going to use. */
1932 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1933 {
1934 asection *srel;
41978308 1935
6edf0760
NC
1936 srel = htab->srelbss;
1937 BFD_ASSERT (srel != NULL);
eea6121a 1938 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 1939 h->needs_copy = 1;
6edf0760 1940 }
41978308 1941
6edf0760
NC
1942 /* We need to figure out the alignment required for this symbol. I
1943 have no idea how ELF linkers handle this. */
1944 power_of_two = bfd_log2 (h->size);
1945 if (power_of_two > 3)
1946 power_of_two = 3;
41978308 1947
6edf0760 1948 /* Apply the required alignment. */
eea6121a 1949 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
6edf0760
NC
1950 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1951 {
1952 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1953 return FALSE;
1954 }
41978308 1955
6edf0760
NC
1956 /* Define the symbol as being at this point in the section. */
1957 h->root.u.def.section = s;
eea6121a 1958 h->root.u.def.value = s->size;
41978308 1959
6edf0760 1960 /* Increment the section size to make room for the symbol. */
eea6121a 1961 s->size += h->size;
41978308 1962
6edf0760
NC
1963 return TRUE;
1964}
1965
6edf0760
NC
1966/* Allocate space in .plt, .got and associated reloc sections for
1967 dynamic relocs. */
41978308 1968
6edf0760 1969static bfd_boolean
47b0e7ad 1970allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
6edf0760
NC
1971{
1972 struct bfd_link_info *info;
1973 struct elf_m32r_link_hash_table *htab;
1974 struct elf_m32r_link_hash_entry *eh;
1975 struct elf_m32r_dyn_relocs *p;
41978308 1976
6edf0760
NC
1977 if (h->root.type == bfd_link_hash_indirect)
1978 return TRUE;
41978308 1979
6edf0760
NC
1980 if (h->root.type == bfd_link_hash_warning)
1981 /* When warning symbols are created, they **replace** the "real"
1982 entry in the hash table, thus we never get to see the real
1983 symbol in a hash traversal. So look at it now. */
1984 h = (struct elf_link_hash_entry *) h->root.u.i.link;
41978308 1985
6edf0760
NC
1986 info = (struct bfd_link_info *) inf;
1987 htab = m32r_elf_hash_table (info);
41978308 1988
6edf0760 1989 eh = (struct elf_m32r_link_hash_entry *) h;
41978308 1990
6edf0760
NC
1991 if (htab->root.dynamic_sections_created
1992 && h->plt.refcount > 0)
1993 {
1994 /* Make sure this symbol is output as a dynamic symbol.
1995 Undefined weak syms won't yet be marked as dynamic. */
1996 if (h->dynindx == -1
f5385ebf 1997 && !h->forced_local)
6edf0760 1998 {
c152c796 1999 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC
2000 return FALSE;
2001 }
41978308 2002
c152c796 2003 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
6edf0760
NC
2004 {
2005 asection *s = htab->splt;
41978308 2006
6edf0760
NC
2007 /* If this is the first .plt entry, make room for the special
2008 first entry. */
eea6121a
AM
2009 if (s->size == 0)
2010 s->size += PLT_ENTRY_SIZE;
41978308 2011
eea6121a 2012 h->plt.offset = s->size;
41978308 2013
6edf0760
NC
2014 /* If this symbol is not defined in a regular file, and we are
2015 not generating a shared library, then set the symbol to this
2016 location in the .plt. This is required to make function
2017 pointers compare as equal between the normal executable and
2018 the shared library. */
2019 if (! info->shared
f5385ebf 2020 && !h->def_regular)
6edf0760
NC
2021 {
2022 h->root.u.def.section = s;
2023 h->root.u.def.value = h->plt.offset;
2024 }
41978308 2025
6edf0760 2026 /* Make room for this entry. */
eea6121a 2027 s->size += PLT_ENTRY_SIZE;
41978308 2028
6edf0760
NC
2029 /* We also need to make an entry in the .got.plt section, which
2030 will be placed in the .got section by the linker script. */
eea6121a 2031 htab->sgotplt->size += 4;
41978308 2032
6edf0760 2033 /* We also need to make an entry in the .rel.plt section. */
eea6121a 2034 htab->srelplt->size += sizeof (Elf32_External_Rela);
6edf0760
NC
2035 }
2036 else
2037 {
2038 h->plt.offset = (bfd_vma) -1;
f5385ebf 2039 h->needs_plt = 0;
6edf0760
NC
2040 }
2041 }
2042 else
2043 {
2044 h->plt.offset = (bfd_vma) -1;
f5385ebf 2045 h->needs_plt = 0;
6edf0760 2046 }
41978308 2047
6edf0760
NC
2048 if (h->got.refcount > 0)
2049 {
2050 asection *s;
2051 bfd_boolean dyn;
41978308 2052
6edf0760
NC
2053 /* Make sure this symbol is output as a dynamic symbol.
2054 Undefined weak syms won't yet be marked as dynamic. */
2055 if (h->dynindx == -1
f5385ebf 2056 && !h->forced_local)
6edf0760 2057 {
c152c796 2058 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC
2059 return FALSE;
2060 }
41978308 2061
6edf0760
NC
2062 s = htab->sgot;
2063
eea6121a
AM
2064 h->got.offset = s->size;
2065 s->size += 4;
6edf0760 2066 dyn = htab->root.dynamic_sections_created;
c152c796 2067 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
eea6121a 2068 htab->srelgot->size += sizeof (Elf32_External_Rela);
6edf0760
NC
2069 }
2070 else
2071 h->got.offset = (bfd_vma) -1;
41978308 2072
6edf0760
NC
2073 if (eh->dyn_relocs == NULL)
2074 return TRUE;
41978308 2075
6edf0760
NC
2076 /* In the shared -Bsymbolic case, discard space allocated for
2077 dynamic pc-relative relocs against symbols which turn out to be
2078 defined in regular objects. For the normal shared case, discard
2079 space for pc-relative relocs that have become local due to symbol
2080 visibility changes. */
2081
2082 if (info->shared)
2083 {
f5385ebf
AM
2084 if (h->def_regular
2085 && (h->forced_local
6edf0760
NC
2086 || info->symbolic))
2087 {
2088 struct elf_m32r_dyn_relocs **pp;
47b0e7ad
NC
2089
2090 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
6edf0760
NC
2091 {
2092 p->count -= p->pc_count;
2093 p->pc_count = 0;
2094 if (p->count == 0)
2095 *pp = p->next;
2096 else
2097 pp = &p->next;
2098 }
2099 }
2100 }
2101 else
2102 {
2103 /* For the non-shared case, discard space for relocs against
2104 symbols which turn out to need copy relocs or are not
2105 dynamic. */
41978308 2106
f5385ebf
AM
2107 if (!h->non_got_ref
2108 && ((h->def_dynamic
2109 && !h->def_regular)
6edf0760
NC
2110 || (htab->root.dynamic_sections_created
2111 && (h->root.type == bfd_link_hash_undefweak
2112 || h->root.type == bfd_link_hash_undefined))))
2113 {
2114 /* Make sure this symbol is output as a dynamic symbol.
2115 Undefined weak syms won't yet be marked as dynamic. */
2116 if (h->dynindx == -1
f5385ebf 2117 && !h->forced_local)
6edf0760 2118 {
c152c796 2119 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC
2120 return FALSE;
2121 }
41978308 2122
6edf0760
NC
2123 /* If that succeeded, we know we'll be keeping all the
2124 relocs. */
2125 if (h->dynindx != -1)
2126 goto keep;
2127 }
41978308 2128
6edf0760 2129 eh->dyn_relocs = NULL;
41978308 2130
6edf0760
NC
2131 keep: ;
2132 }
41978308 2133
6edf0760
NC
2134 /* Finally, allocate space. */
2135 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2136 {
2137 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 2138 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6edf0760 2139 }
41978308 2140
6edf0760
NC
2141 return TRUE;
2142}
47b0e7ad 2143
6edf0760 2144/* Find any dynamic relocs that apply to read-only sections. */
41978308 2145
6edf0760 2146static bfd_boolean
47b0e7ad 2147readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
6edf0760
NC
2148{
2149 struct elf_m32r_link_hash_entry *eh;
2150 struct elf_m32r_dyn_relocs *p;
2151
2152 if (h->root.type == bfd_link_hash_warning)
2153 h = (struct elf_link_hash_entry *) h->root.u.i.link;
252b5132 2154
6edf0760
NC
2155 eh = (struct elf_m32r_link_hash_entry *) h;
2156 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2157 {
2158 asection *s = p->sec->output_section;
252b5132 2159
6edf0760
NC
2160 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2161 {
2162 struct bfd_link_info *info = (struct bfd_link_info *) inf;
252b5132 2163
6edf0760 2164 info->flags |= DF_TEXTREL;
252b5132 2165
6edf0760
NC
2166 /* Not an error, just cut short the traversal. */
2167 return FALSE;
2168 }
252b5132 2169 }
6edf0760
NC
2170 return TRUE;
2171}
252b5132 2172
6edf0760 2173/* Set the sizes of the dynamic sections. */
41978308 2174
6edf0760 2175static bfd_boolean
47b0e7ad
NC
2176m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2177 struct bfd_link_info *info)
6edf0760
NC
2178{
2179 struct elf_m32r_link_hash_table *htab;
2180 bfd *dynobj;
2181 asection *s;
2182 bfd_boolean relocs;
2183 bfd *ibfd;
2184
2185#ifdef DEBUG_PIC
47b0e7ad 2186 printf ("m32r_elf_size_dynamic_sections()\n");
6edf0760
NC
2187#endif
2188
2189 htab = m32r_elf_hash_table (info);
2190 dynobj = htab->root.dynobj;
2191 BFD_ASSERT (dynobj != NULL);
2192
2193 if (htab->root.dynamic_sections_created)
252b5132 2194 {
6edf0760 2195 /* Set the contents of the .interp section to the interpreter. */
80447b21 2196 if (info->executable)
6edf0760
NC
2197 {
2198 s = bfd_get_section_by_name (dynobj, ".interp");
2199 BFD_ASSERT (s != NULL);
eea6121a 2200 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6edf0760
NC
2201 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2202 }
252b5132
RH
2203 }
2204
6edf0760
NC
2205 /* Set up .got offsets for local syms, and space for local dynamic
2206 relocs. */
2207 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2208 {
2209 bfd_signed_vma *local_got;
2210 bfd_signed_vma *end_local_got;
2211 bfd_size_type locsymcount;
2212 Elf_Internal_Shdr *symtab_hdr;
2213 asection *srel;
252b5132 2214
6edf0760
NC
2215 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2216 continue;
252b5132 2217
6edf0760
NC
2218 for (s = ibfd->sections; s != NULL; s = s->next)
2219 {
2220 struct elf_m32r_dyn_relocs *p;
2221
2222 for (p = ((struct elf_m32r_dyn_relocs *)
2223 elf_section_data (s)->local_dynrel);
2224 p != NULL;
2225 p = p->next)
2226 {
2227 if (! bfd_is_abs_section (p->sec)
2228 && bfd_is_abs_section (p->sec->output_section))
2229 {
2230 /* Input section has been discarded, either because
2231 it is a copy of a linkonce section or due to
2232 linker script /DISCARD/, so we'll be discarding
2233 the relocs too. */
2234 }
2235 else if (p->count != 0)
2236 {
2237 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2238 srel->size += p->count * sizeof (Elf32_External_Rela);
6edf0760
NC
2239 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2240 info->flags |= DF_TEXTREL;
2241 }
2242 }
2243 }
2244
2245 local_got = elf_local_got_refcounts (ibfd);
2246 if (!local_got)
2247 continue;
2248
2249 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2250 locsymcount = symtab_hdr->sh_info;
2251 end_local_got = local_got + locsymcount;
2252 s = htab->sgot;
2253 srel = htab->srelgot;
2254 for (; local_got < end_local_got; ++local_got)
2255 {
2256 if (*local_got > 0)
2257 {
eea6121a
AM
2258 *local_got = s->size;
2259 s->size += 4;
6edf0760 2260 if (info->shared)
eea6121a 2261 srel->size += sizeof (Elf32_External_Rela);
6edf0760
NC
2262 }
2263 else
2264 *local_got = (bfd_vma) -1;
2265 }
2266 }
2267
2268 /* Allocate global sym .plt and .got entries, and space for global
2269 sym dynamic relocs. */
47b0e7ad 2270 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
6edf0760
NC
2271
2272 /* We now have determined the sizes of the various dynamic sections.
2273 Allocate memory for them. */
2274 relocs = FALSE;
2275 for (s = dynobj->sections; s != NULL; s = s->next)
252b5132 2276 {
6edf0760
NC
2277 if ((s->flags & SEC_LINKER_CREATED) == 0)
2278 continue;
252b5132 2279
6edf0760
NC
2280 if (s == htab->splt
2281 || s == htab->sgot
c456f082
AM
2282 || s == htab->sgotplt
2283 || s == htab->sdynbss)
6edf0760
NC
2284 {
2285 /* Strip this section if we don't need it; see the
2286 comment below. */
2287 }
2288 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2289 {
eea6121a 2290 if (s->size != 0 && s != htab->srelplt)
6edf0760
NC
2291 relocs = TRUE;
2292
2293 /* We use the reloc_count field as a counter if we need
2294 to copy relocs into the output file. */
2295 s->reloc_count = 0;
2296 }
252b5132 2297 else
47b0e7ad
NC
2298 /* It's not one of our sections, so don't allocate space. */
2299 continue;
6edf0760 2300
eea6121a 2301 if (s->size == 0)
6edf0760
NC
2302 {
2303 /* If we don't need this section, strip it from the
2304 output file. This is mostly to handle .rela.bss and
2305 .rela.plt. We must create both sections in
2306 create_dynamic_sections, because they must be created
2307 before the linker maps input sections to output
2308 sections. The linker does that before
2309 adjust_dynamic_symbol is called, and it is that
2310 function which decides whether anything needs to go
2311 into these sections. */
8423293d 2312 s->flags |= SEC_EXCLUDE;
6edf0760
NC
2313 continue;
2314 }
2315
c456f082
AM
2316 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2317 continue;
2318
6edf0760
NC
2319 /* Allocate memory for the section contents. We use bfd_zalloc
2320 here in case unused entries are not reclaimed before the
2321 section's contents are written out. This should not happen,
2322 but this way if it does, we get a R_M32R_NONE reloc instead
2323 of garbage. */
47b0e7ad 2324 s->contents = bfd_zalloc (dynobj, s->size);
6edf0760
NC
2325 if (s->contents == NULL)
2326 return FALSE;
2327 }
2328
2329 if (htab->root.dynamic_sections_created)
2330 {
2331 /* Add some entries to the .dynamic section. We fill in the
2332 values later, in m32r_elf_finish_dynamic_sections, but we
2333 must add the entries now so that we get the correct size for
2334 the .dynamic section. The DT_DEBUG entry is filled in by the
2335 dynamic linker and used by the debugger. */
2336#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2337 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6edf0760 2338
80447b21 2339 if (info->executable)
252b5132 2340 {
6edf0760
NC
2341 if (! add_dynamic_entry (DT_DEBUG, 0))
2342 return FALSE;
252b5132 2343 }
6edf0760 2344
eea6121a 2345 if (htab->splt->size != 0)
6edf0760
NC
2346 {
2347 if (! add_dynamic_entry (DT_PLTGOT, 0)
2348 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2349 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2350 || ! add_dynamic_entry (DT_JMPREL, 0))
2351 return FALSE;
2352 }
2353
2354 if (relocs)
2355 {
2356 if (! add_dynamic_entry (DT_RELA, 0)
2357 || ! add_dynamic_entry (DT_RELASZ, 0)
2358 || ! add_dynamic_entry (DT_RELAENT,
2359 sizeof (Elf32_External_Rela)))
2360 return FALSE;
2361
2362 /* If any dynamic relocs apply to a read-only section,
2363 then we need a DT_TEXTREL entry. */
2364 if ((info->flags & DF_TEXTREL) == 0)
2365 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
47b0e7ad 2366 info);
6edf0760
NC
2367
2368 if ((info->flags & DF_TEXTREL) != 0)
2369 {
2370 if (! add_dynamic_entry (DT_TEXTREL, 0))
2371 return FALSE;
2372 }
2373 }
252b5132 2374 }
6edf0760
NC
2375#undef add_dynamic_entry
2376
2377 return TRUE;
252b5132 2378}
47b0e7ad 2379
252b5132
RH
2380/* Relocate an M32R/D ELF section.
2381 There is some attempt to make this function usable for many architectures,
f0fe0e16 2382 both for RELA and REL type relocs, if only to serve as a learning tool.
252b5132
RH
2383
2384 The RELOCATE_SECTION function is called by the new ELF backend linker
2385 to handle the relocations for a section.
2386
2387 The relocs are always passed as Rela structures; if the section
2388 actually uses Rel structures, the r_addend field will always be
2389 zero.
2390
2391 This function is responsible for adjust the section contents as
2392 necessary, and (if using Rela relocs and generating a
1049f94e 2393 relocatable output file) adjusting the reloc addend as
252b5132
RH
2394 necessary.
2395
2396 This function does not have to worry about setting the reloc
2397 address or the reloc symbol index.
2398
2399 LOCAL_SYMS is a pointer to the swapped in local symbols.
2400
2401 LOCAL_SECTIONS is an array giving the section in the input file
2402 corresponding to the st_shndx field of each local symbol.
2403
2404 The global hash table entry for the global symbols can be found
2405 via elf_sym_hashes (input_bfd).
2406
1049f94e 2407 When generating relocatable output, this function must handle
252b5132
RH
2408 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2409 going to be the section symbol corresponding to the output
2410 section, which means that the addend must be adjusted
2411 accordingly. */
2412
b34976b6 2413static bfd_boolean
47b0e7ad
NC
2414m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2415 struct bfd_link_info *info,
2416 bfd *input_bfd,
2417 asection *input_section,
2418 bfd_byte *contents,
2419 Elf_Internal_Rela *relocs,
2420 Elf_Internal_Sym *local_syms,
2421 asection **local_sections)
252b5132
RH
2422{
2423 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2424 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2425 Elf_Internal_Rela *rel, *relend;
2426 /* Assume success. */
b34976b6 2427 bfd_boolean ret = TRUE;
252b5132 2428
6edf0760
NC
2429 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2430 bfd *dynobj;
2431 bfd_vma *local_got_offsets;
2432 asection *sgot, *splt, *sreloc;
07515404 2433 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
6edf0760
NC
2434
2435 dynobj = htab->root.dynobj;
2436 local_got_offsets = elf_local_got_offsets (input_bfd);
41978308 2437
6edf0760
NC
2438 sgot = htab->sgot;
2439 splt = htab->splt;
2440 sreloc = NULL;
b491616a 2441
252b5132
RH
2442 rel = relocs;
2443 relend = relocs + input_section->reloc_count;
2444 for (; rel < relend; rel++)
2445 {
2446 int r_type;
2447 reloc_howto_type *howto;
2448 unsigned long r_symndx;
6edf0760 2449 struct elf_link_hash_entry *h;
252b5132 2450 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
6edf0760
NC
2451 ensure it's zero (we use REL relocs, not RELA). Therefore this
2452 should be assigning zero to `addend', but for clarity we use
2453 `r_addend'. */
252b5132
RH
2454 bfd_vma addend = rel->r_addend;
2455 bfd_vma offset = rel->r_offset;
252b5132
RH
2456 Elf_Internal_Sym *sym;
2457 asection *sec;
2458 const char *sym_name;
2459 bfd_reloc_status_type r;
2460 const char *errmsg = NULL;
6edf0760 2461 bfd_boolean use_rel = FALSE;
252b5132
RH
2462
2463 h = NULL;
2464 r_type = ELF32_R_TYPE (rel->r_info);
2465 if (r_type < 0 || r_type >= (int) R_M32R_max)
2466 {
d003868e
AM
2467 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2468 input_bfd,
252b5132
RH
2469 (int) r_type);
2470 bfd_set_error (bfd_error_bad_value);
b34976b6 2471 ret = FALSE;
252b5132
RH
2472 continue;
2473 }
2474
47b0e7ad 2475 if ( r_type == R_M32R_GNU_VTENTRY
6edf0760
NC
2476 || r_type == R_M32R_GNU_VTINHERIT
2477 || r_type == R_M32R_NONE
2478 || r_type == R_M32R_RELA_GNU_VTENTRY
2479 || r_type == R_M32R_RELA_GNU_VTINHERIT)
252b5132
RH
2480 continue;
2481
6edf0760
NC
2482 if (r_type <= R_M32R_GNU_VTENTRY)
2483 use_rel = TRUE;
2484
252b5132
RH
2485 howto = m32r_elf_howto_table + r_type;
2486 r_symndx = ELF32_R_SYM (rel->r_info);
2487
688c58f3 2488 if (info->relocatable && use_rel)
252b5132 2489 {
1049f94e 2490 /* This is a relocatable link. We don't have to change
252b5132
RH
2491 anything, unless the reloc is against a section symbol,
2492 in which case we have to adjust according to where the
2493 section symbol winds up in the output section. */
2494 sec = NULL;
2495 if (r_symndx >= symtab_hdr->sh_info)
47b0e7ad
NC
2496 /* External symbol. */
2497 continue;
252b5132
RH
2498
2499 /* Local symbol. */
2500 sym = local_syms + r_symndx;
2501 sym_name = "<local symbol>";
2502 /* STT_SECTION: symbol is associated with a section. */
2503 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
47b0e7ad
NC
2504 /* Symbol isn't associated with a section. Nothing to do. */
2505 continue;
252b5132
RH
2506
2507 sec = local_sections[r_symndx];
2508 addend += sec->output_offset + sym->st_value;
252b5132 2509
252b5132
RH
2510 /* If partial_inplace, we need to store any additional addend
2511 back in the section. */
2512 if (! howto->partial_inplace)
2513 continue;
2514 /* ??? Here is a nice place to call a special_function
2515 like handler. */
2516 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2517 r = _bfd_relocate_contents (howto, input_bfd,
2518 addend, contents + offset);
2519 else
2520 {
2521 Elf_Internal_Rela *lorel;
2522
2523 /* We allow an arbitrary number of HI16 relocs before the
2524 LO16 reloc. This permits gcc to emit the HI and LO relocs
2525 itself. */
2526 for (lorel = rel + 1;
2527 (lorel < relend
2528 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2529 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2530 lorel++)
2531 continue;
2532 if (lorel < relend
2533 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2534 {
2535 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2536 contents, addend);
2537 r = bfd_reloc_ok;
2538 }
2539 else
2540 r = _bfd_relocate_contents (howto, input_bfd,
2541 addend, contents + offset);
2542 }
252b5132
RH
2543 }
2544 else
2545 {
2546 bfd_vma relocation;
2547
2548 /* This is a final link. */
2549 sym = NULL;
2550 sec = NULL;
6edf0760 2551 h = NULL;
252b5132
RH
2552
2553 if (r_symndx < symtab_hdr->sh_info)
2554 {
2555 /* Local symbol. */
2556 sym = local_syms + r_symndx;
2557 sec = local_sections[r_symndx];
2558 sym_name = "<local symbol>";
6edf0760 2559
688c58f3 2560 if (!use_rel)
6edf0760
NC
2561 {
2562 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2563 addend = rel->r_addend;
2564
2565 if (info->relocatable)
2566 {
2567 /* This is a relocatable link. We don't have to change
2568 anything, unless the reloc is against a section symbol,
2569 in which case we have to adjust according to where the
2570 section symbol winds up in the output section. */
2571 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2572 rel->r_addend += sec->output_offset + sym->st_value;
41978308 2573
6edf0760
NC
2574 continue;
2575 }
2576 }
2577 else
2578 {
2579 relocation = (sec->output_section->vma
2580 + sec->output_offset
2581 + sym->st_value);
2582 }
252b5132
RH
2583 }
2584 else
2585 {
2586 /* External symbol. */
688c58f3 2587 if (info->relocatable && !use_rel)
6edf0760
NC
2588 continue;
2589
252b5132
RH
2590 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2591 while (h->root.type == bfd_link_hash_indirect
2592 || h->root.type == bfd_link_hash_warning)
2593 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2594 sym_name = h->root.root.string;
2595
2596 if (h->root.type == bfd_link_hash_defined
2597 || h->root.type == bfd_link_hash_defweak)
2598 {
6edf0760 2599 bfd_boolean dyn;
252b5132 2600 sec = h->root.u.def.section;
6edf0760
NC
2601
2602 dyn = htab->root.dynamic_sections_created;
2603 sec = h->root.u.def.section;
2604 if (r_type == R_M32R_GOTPC24
2605 || (r_type == R_M32R_GOTPC_HI_ULO
2606 || r_type == R_M32R_GOTPC_HI_SLO
2607 || r_type == R_M32R_GOTPC_LO)
2608 || (r_type == R_M32R_26_PLTREL
2609 && h->plt.offset != (bfd_vma) -1)
2610 || ((r_type == R_M32R_GOT24
2611 || r_type == R_M32R_GOT16_HI_ULO
2612 || r_type == R_M32R_GOT16_HI_SLO
2613 || r_type == R_M32R_GOT16_LO)
c152c796
AM
2614 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2615 info->shared, h)
6edf0760
NC
2616 && (! info->shared
2617 || (! info->symbolic && h->dynindx != -1)
f5385ebf 2618 || !h->def_regular))
6edf0760
NC
2619 || (info->shared
2620 && ((! info->symbolic && h->dynindx != -1)
f5385ebf 2621 || !h->def_regular)
6edf0760
NC
2622 && (((r_type == R_M32R_16_RELA
2623 || r_type == R_M32R_32_RELA
2624 || r_type == R_M32R_24_RELA
2625 || r_type == R_M32R_HI16_ULO_RELA
2626 || r_type == R_M32R_HI16_SLO_RELA
2627 || r_type == R_M32R_LO16_RELA)
f5385ebf 2628 && !h->forced_local)
157e7bd1 2629 || r_type == R_M32R_REL32
6edf0760
NC
2630 || r_type == R_M32R_10_PCREL_RELA
2631 || r_type == R_M32R_18_PCREL_RELA
2632 || r_type == R_M32R_26_PCREL_RELA)
2633 && ((input_section->flags & SEC_ALLOC) != 0
2634 /* DWARF will emit R_M32R_16(24,32) relocations
41978308 2635 in its sections against symbols defined
6edf0760
NC
2636 externally in shared libraries. We can't do
2637 anything with them here. */
2638 || ((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 2639 && h->def_dynamic))))
6edf0760
NC
2640 {
2641 /* In these cases, we don't need the relocation
2642 value. We check specially because in some
2643 obscure cases sec->output_section will be NULL. */
2644 relocation = 0;
2645 }
2646 else if (sec->output_section == NULL)
2647 {
2648 (*_bfd_error_handler)
2649 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
2650 bfd_get_filename (input_bfd), h->root.root.string,
2651 bfd_get_section_name (input_bfd, input_section));
2652
2653 relocation = 0;
2654 }
252b5132
RH
2655 else
2656 relocation = (h->root.u.def.value
2657 + sec->output_section->vma
2658 + sec->output_offset);
2659 }
2660 else if (h->root.type == bfd_link_hash_undefweak)
2661 relocation = 0;
59c2e50f 2662 else if (info->unresolved_syms_in_objects == RM_IGNORE
6edf0760
NC
2663 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2664 relocation = 0;
252b5132
RH
2665 else
2666 {
2667 if (! ((*info->callbacks->undefined_symbol)
2668 (info, h->root.root.string, input_bfd,
6edf0760 2669 input_section, offset,
59c2e50f 2670 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
6edf0760 2671 || ELF_ST_VISIBILITY (h->other)))))
b34976b6 2672 return FALSE;
252b5132
RH
2673 relocation = 0;
2674 }
2675 }
2676
2677 /* Sanity check the address. */
07515404 2678 if (offset > high_address)
252b5132
RH
2679 {
2680 r = bfd_reloc_outofrange;
2681 goto check_reloc;
2682 }
2683
2684 switch ((int) r_type)
2685 {
097f809a
NC
2686 case R_M32R_GOTOFF:
2687 /* Relocation is relative to the start of the global offset
2688 table (for ld24 rx, #uimm24). eg access at label+addend
f12123c0 2689
097f809a
NC
2690 ld24 rx. #label@GOTOFF + addend
2691 sub rx, r12. */
2692
2693 BFD_ASSERT (sgot != NULL);
2694
2695 relocation = -(relocation - sgot->output_section->vma);
2696 rel->r_addend = -rel->r_addend;
2697 break;
2698
2699 case R_M32R_GOTOFF_HI_ULO:
2700 case R_M32R_GOTOFF_HI_SLO:
2701 case R_M32R_GOTOFF_LO:
2702 BFD_ASSERT (sgot != NULL);
2703
2704 relocation -= sgot->output_section->vma;
2705
2706 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2707 && ((relocation + rel->r_addend) & 0x8000))
2708 rel->r_addend += 0x10000;
2709 break;
2710
6edf0760
NC
2711 case R_M32R_GOTPC24:
2712 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2713 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2714 */
2715 relocation = sgot->output_section->vma;
2716 break;
2717
2718 case R_M32R_GOTPC_HI_ULO:
2719 case R_M32R_GOTPC_HI_SLO:
41978308 2720 case R_M32R_GOTPC_LO:
6edf0760
NC
2721 {
2722 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2723 bl .+4
2724 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2725 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2726 or
2727 bl .+4
2728 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2729 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2730 */
2731 relocation = sgot->output_section->vma;
2732 relocation -= (input_section->output_section->vma
2733 + input_section->output_offset
2734 + rel->r_offset);
41978308 2735 if ((r_type == R_M32R_GOTPC_HI_SLO)
6edf0760
NC
2736 && ((relocation + rel->r_addend) & 0x8000))
2737 rel->r_addend += 0x10000;
2738
2739 break;
2740 }
2741 case R_M32R_GOT16_HI_ULO:
2742 case R_M32R_GOT16_HI_SLO:
41978308 2743 case R_M32R_GOT16_LO:
6edf0760
NC
2744 /* Fall through. */
2745 case R_M32R_GOT24:
2746 /* Relocation is to the entry for this symbol in the global
2747 offset table. */
2748 BFD_ASSERT (sgot != NULL);
41978308 2749
6edf0760
NC
2750 if (h != NULL)
2751 {
2752 bfd_boolean dyn;
2753 bfd_vma off;
41978308 2754
6edf0760
NC
2755 off = h->got.offset;
2756 BFD_ASSERT (off != (bfd_vma) -1);
2757
2758 dyn = htab->root.dynamic_sections_created;
c152c796 2759 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6edf0760
NC
2760 || (info->shared
2761 && (info->symbolic
2762 || h->dynindx == -1
f5385ebf
AM
2763 || h->forced_local)
2764 && h->def_regular))
6edf0760
NC
2765 {
2766 /* This is actually a static link, or it is a
2767 -Bsymbolic link and the symbol is defined
2768 locally, or the symbol was forced to be local
2769 because of a version file. We must initialize
2770 this entry in the global offset table. Since the
2771 offset must always be a multiple of 4, we use the
2772 least significant bit to record whether we have
2773 initialized it already.
41978308 2774
6edf0760
NC
2775 When doing a dynamic link, we create a .rela.got
2776 relocation entry to initialize the value. This
2777 is done in the finish_dynamic_symbol routine. */
2778 if ((off & 1) != 0)
2779 off &= ~1;
2780 else
2781 {
2782 bfd_put_32 (output_bfd, relocation,
2783 sgot->contents + off);
2784 h->got.offset |= 1;
2785 }
2786 }
41978308 2787
6edf0760
NC
2788 relocation = sgot->output_offset + off;
2789 }
2790 else
2791 {
2792 bfd_vma off;
2793 bfd_byte *loc;
41978308 2794
6edf0760
NC
2795 BFD_ASSERT (local_got_offsets != NULL
2796 && local_got_offsets[r_symndx] != (bfd_vma) -1);
41978308 2797
6edf0760 2798 off = local_got_offsets[r_symndx];
41978308 2799
6edf0760
NC
2800 /* The offset must always be a multiple of 4. We use
2801 the least significant bit to record whether we have
2802 already processed this entry. */
2803 if ((off & 1) != 0)
2804 off &= ~1;
2805 else
2806 {
2807 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
41978308 2808
6edf0760
NC
2809 if (info->shared)
2810 {
2811 asection *srelgot;
2812 Elf_Internal_Rela outrel;
41978308 2813
6edf0760
NC
2814 /* We need to generate a R_M32R_RELATIVE reloc
2815 for the dynamic linker. */
2816 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2817 BFD_ASSERT (srelgot != NULL);
41978308 2818
6edf0760
NC
2819 outrel.r_offset = (sgot->output_section->vma
2820 + sgot->output_offset
2821 + off);
2822 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2823 outrel.r_addend = relocation;
2824 loc = srelgot->contents;
47b0e7ad 2825 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC
2826 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2827 ++srelgot->reloc_count;
2828 }
41978308 2829
6edf0760
NC
2830 local_got_offsets[r_symndx] |= 1;
2831 }
41978308 2832
6edf0760
NC
2833 relocation = sgot->output_offset + off;
2834 }
2835 if ((r_type == R_M32R_GOT16_HI_SLO)
2836 && ((relocation + rel->r_addend) & 0x8000))
2837 rel->r_addend += 0x10000;
2838
2839 break;
41978308 2840
6edf0760
NC
2841 case R_M32R_26_PLTREL:
2842 /* Relocation is to the entry for this symbol in the
2843 procedure linkage table. */
41978308 2844
6edf0760
NC
2845 /* The native assembler will generate a 26_PLTREL reloc
2846 for a local symbol if you assemble a call from one
2847 section to another when using -K pic. */
2848 if (h == NULL)
2849 break;
2850
f5385ebf 2851 if (h->forced_local)
6edf0760
NC
2852 break;
2853
2854 if (h->plt.offset == (bfd_vma) -1)
47b0e7ad
NC
2855 /* We didn't make a PLT entry for this symbol. This
2856 happens when statically linking PIC code, or when
2857 using -Bsymbolic. */
2858 break;
41978308 2859
6edf0760
NC
2860 relocation = (splt->output_section->vma
2861 + splt->output_offset
2862 + h->plt.offset);
2863 break;
41978308 2864
6edf0760 2865 case R_M32R_HI16_SLO_RELA:
47b0e7ad
NC
2866 if ((relocation + rel->r_addend) & 0x8000)
2867 rel->r_addend += 0x10000;
6edf0760 2868 /* Fall through. */
47b0e7ad 2869
6edf0760
NC
2870 case R_M32R_16_RELA:
2871 case R_M32R_24_RELA:
2872 case R_M32R_32_RELA:
157e7bd1 2873 case R_M32R_REL32:
6edf0760
NC
2874 case R_M32R_18_PCREL_RELA:
2875 case R_M32R_26_PCREL_RELA:
2876 case R_M32R_HI16_ULO_RELA:
2877 case R_M32R_LO16_RELA:
6edf0760
NC
2878 if (info->shared
2879 && r_symndx != 0
2880 && (input_section->flags & SEC_ALLOC) != 0
2881 && ((r_type != R_M32R_18_PCREL_RELA
157e7bd1
NC
2882 && r_type != R_M32R_26_PCREL_RELA
2883 && r_type != R_M32R_REL32)
6edf0760
NC
2884 || (h != NULL
2885 && h->dynindx != -1
2886 && (! info->symbolic
f5385ebf 2887 || !h->def_regular))))
6edf0760
NC
2888 {
2889 Elf_Internal_Rela outrel;
2890 bfd_boolean skip, relocate;
2891 bfd_byte *loc;
41978308 2892
6edf0760
NC
2893 /* When generating a shared object, these relocations
2894 are copied into the output file to be resolved at run
2895 time. */
6edf0760
NC
2896 if (sreloc == NULL)
2897 {
2898 const char *name;
41978308 2899
6edf0760
NC
2900 name = (bfd_elf_string_from_elf_section
2901 (input_bfd,
2902 elf_elfheader (input_bfd)->e_shstrndx,
2903 elf_section_data (input_section)->rel_hdr.sh_name));
2904 if (name == NULL)
2905 return FALSE;
41978308 2906
6edf0760
NC
2907 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2908 && strcmp (bfd_get_section_name (input_bfd,
2909 input_section),
2910 name + 5) == 0);
41978308 2911
6edf0760
NC
2912 sreloc = bfd_get_section_by_name (dynobj, name);
2913 BFD_ASSERT (sreloc != NULL);
2914 }
41978308 2915
6edf0760
NC
2916 skip = FALSE;
2917 relocate = FALSE;
41978308 2918
6edf0760
NC
2919 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2920 info,
2921 input_section,
2922 rel->r_offset);
2923 if (outrel.r_offset == (bfd_vma) -1)
2924 skip = TRUE;
2925 else if (outrel.r_offset == (bfd_vma) -2)
47b0e7ad 2926 skip = relocate = TRUE;
6edf0760
NC
2927 outrel.r_offset += (input_section->output_section->vma
2928 + input_section->output_offset);
41978308 2929
6edf0760
NC
2930 if (skip)
2931 memset (&outrel, 0, sizeof outrel);
2932 else if (r_type == R_M32R_18_PCREL_RELA
157e7bd1
NC
2933 || r_type == R_M32R_26_PCREL_RELA
2934 || r_type == R_M32R_REL32)
6edf0760
NC
2935 {
2936 BFD_ASSERT (h != NULL && h->dynindx != -1);
2937 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2938 outrel.r_addend = rel->r_addend;
2939 }
2940 else
2941 {
2942 /* h->dynindx may be -1 if this symbol was marked to
2943 become local. */
2944 if (h == NULL
2945 || ((info->symbolic || h->dynindx == -1)
f5385ebf 2946 && h->def_regular))
6edf0760
NC
2947 {
2948 relocate = TRUE;
2949 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2950 outrel.r_addend = relocation + rel->r_addend;
2951 }
2952 else
2953 {
2954 BFD_ASSERT (h->dynindx != -1);
2955 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2956 outrel.r_addend = relocation + rel->r_addend;
2957 }
2958 }
2959
2960 loc = sreloc->contents;
47b0e7ad 2961 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC
2962 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2963 ++sreloc->reloc_count;
2964
2965 /* If this reloc is against an external symbol, we do
2966 not want to fiddle with the addend. Otherwise, we
2967 need to include the symbol value so that it becomes
2968 an addend for the dynamic reloc. */
2969 if (! relocate)
2970 continue;
2971 }
2972 break;
41978308 2973
252b5132
RH
2974 case (int) R_M32R_10_PCREL :
2975 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2976 contents, offset,
2977 sec, relocation, addend);
6edf0760 2978 goto check_reloc;
252b5132
RH
2979
2980 case (int) R_M32R_HI16_SLO :
2981 case (int) R_M32R_HI16_ULO :
2982 {
2983 Elf_Internal_Rela *lorel;
2984
2985 /* We allow an arbitrary number of HI16 relocs before the
2986 LO16 reloc. This permits gcc to emit the HI and LO relocs
2987 itself. */
2988 for (lorel = rel + 1;
2989 (lorel < relend
2990 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2991 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2992 lorel++)
2993 continue;
2994 if (lorel < relend
2995 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2996 {
2997 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2998 contents, relocation + addend);
2999 r = bfd_reloc_ok;
3000 }
3001 else
3002 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3003 contents, offset,
3004 relocation, addend);
3005 }
6edf0760
NC
3006
3007 goto check_reloc;
252b5132 3008
af705ba8 3009 case (int) R_M32R_SDA16_RELA:
252b5132
RH
3010 case (int) R_M32R_SDA16 :
3011 {
3012 const char *name;
3013
3014 BFD_ASSERT (sec != NULL);
3015 name = bfd_get_section_name (abfd, sec);
3016
47b0e7ad 3017 if ( strcmp (name, ".sdata") == 0
252b5132
RH
3018 || strcmp (name, ".sbss") == 0
3019 || strcmp (name, ".scommon") == 0)
3020 {
3021 bfd_vma sda_base;
3022 bfd *out_bfd = sec->output_section->owner;
3023
3024 r = m32r_elf_final_sda_base (out_bfd, info,
3025 &errmsg,
3026 &sda_base);
3027 if (r != bfd_reloc_ok)
3028 {
b34976b6 3029 ret = FALSE;
252b5132
RH
3030 goto check_reloc;
3031 }
3032
3033 /* At this point `relocation' contains the object's
3034 address. */
3035 relocation -= sda_base;
3036 /* Now it contains the offset from _SDA_BASE_. */
3037 }
3038 else
3039 {
8f615d07 3040 (*_bfd_error_handler)
d003868e
AM
3041 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3042 input_bfd,
3043 sec,
8f615d07 3044 sym_name,
d003868e 3045 m32r_elf_howto_table[(int) r_type].name);
252b5132 3046 /*bfd_set_error (bfd_error_bad_value); ??? why? */
b34976b6 3047 ret = FALSE;
252b5132
RH
3048 continue;
3049 }
3050 }
47b0e7ad 3051 /* Fall through. */
6edf0760
NC
3052
3053 default : /* OLD_M32R_RELOC */
252b5132 3054
252b5132
RH
3055 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3056 contents, offset,
3057 relocation, addend);
6edf0760 3058 goto check_reloc;
252b5132 3059 }
6edf0760
NC
3060
3061 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3062 contents, rel->r_offset,
3063 relocation, rel->r_addend);
3064
252b5132
RH
3065 }
3066
3067 check_reloc:
3068
3069 if (r != bfd_reloc_ok)
3070 {
3071 /* FIXME: This should be generic enough to go in a utility. */
3072 const char *name;
3073
3074 if (h != NULL)
3075 name = h->root.root.string;
3076 else
3077 {
3078 name = (bfd_elf_string_from_elf_section
3079 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3080 if (name == NULL || *name == '\0')
3081 name = bfd_section_name (input_bfd, sec);
3082 }
3083
3084 if (errmsg != NULL)
3085 goto common_error;
3086
3087 switch (r)
3088 {
3089 case bfd_reloc_overflow:
3090 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
3091 (info, (h ? &h->root : NULL), name, howto->name,
3092 (bfd_vma) 0, input_bfd, input_section, offset)))
b34976b6 3093 return FALSE;
252b5132
RH
3094 break;
3095
3096 case bfd_reloc_undefined:
3097 if (! ((*info->callbacks->undefined_symbol)
3098 (info, name, input_bfd, input_section,
b34976b6
AM
3099 offset, TRUE)))
3100 return FALSE;
252b5132
RH
3101 break;
3102
3103 case bfd_reloc_outofrange:
3104 errmsg = _("internal error: out of range error");
3105 goto common_error;
3106
3107 case bfd_reloc_notsupported:
3108 errmsg = _("internal error: unsupported relocation error");
3109 goto common_error;
3110
3111 case bfd_reloc_dangerous:
3112 errmsg = _("internal error: dangerous error");
3113 goto common_error;
3114
3115 default:
3116 errmsg = _("internal error: unknown error");
3117 /* fall through */
3118
3119 common_error:
3120 if (!((*info->callbacks->warning)
3121 (info, errmsg, name, input_bfd, input_section,
3122 offset)))
b34976b6 3123 return FALSE;
252b5132
RH
3124 break;
3125 }
3126 }
3127 }
3128
3129 return ret;
3130}
6edf0760
NC
3131
3132/* Finish up dynamic symbol handling. We set the contents of various
3133 dynamic sections here. */
47b0e7ad 3134
6edf0760 3135static bfd_boolean
47b0e7ad
NC
3136m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3137 struct bfd_link_info *info,
3138 struct elf_link_hash_entry *h,
3139 Elf_Internal_Sym *sym)
6edf0760
NC
3140{
3141 struct elf_m32r_link_hash_table *htab;
3142 bfd *dynobj;
3143 bfd_byte *loc;
41978308 3144
6edf0760 3145#ifdef DEBUG_PIC
47b0e7ad 3146 printf ("m32r_elf_finish_dynamic_symbol()\n");
6edf0760 3147#endif
41978308 3148
6edf0760
NC
3149 htab = m32r_elf_hash_table (info);
3150 dynobj = htab->root.dynobj;
3151
3152 if (h->plt.offset != (bfd_vma) -1)
3153 {
3154 asection *splt;
3155 asection *sgot;
3156 asection *srela;
3157
3158 bfd_vma plt_index;
3159 bfd_vma got_offset;
3160 Elf_Internal_Rela rela;
41978308 3161
6edf0760
NC
3162 /* This symbol has an entry in the procedure linkage table. Set
3163 it up. */
41978308 3164
6edf0760 3165 BFD_ASSERT (h->dynindx != -1);
41978308 3166
6edf0760
NC
3167 splt = htab->splt;
3168 sgot = htab->sgotplt;
3169 srela = htab->srelplt;
3170 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3171
3172 /* Get the index in the procedure linkage table which
3173 corresponds to this symbol. This is the index of this symbol
3174 in all the symbols for which we are making plt entries. The
3175 first entry in the procedure linkage table is reserved. */
3176 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3177
3178 /* Get the offset into the .got table of the entry that
3179 corresponds to this function. Each .got entry is 4 bytes.
3180 The first three are reserved. */
3181 got_offset = (plt_index + 3) * 4;
3182
3183 /* Fill in the entry in the procedure linkage table. */
3184 if (! info->shared)
3185 {
3186 bfd_put_32 (output_bfd,
3187 (PLT_ENTRY_WORD0b
3188 + (((sgot->output_section->vma
3189 + sgot->output_offset
3190 + got_offset) >> 16) & 0xffff)),
3191 splt->contents + h->plt.offset);
3192 bfd_put_32 (output_bfd,
3193 (PLT_ENTRY_WORD1b
3194 + ((sgot->output_section->vma
3195 + sgot->output_offset
3196 + got_offset) & 0xffff)),
3197 splt->contents + h->plt.offset + 4);
3198 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3199 splt->contents + h->plt.offset + 8);
3200 bfd_put_32 (output_bfd,
3201 (PLT_ENTRY_WORD3
3202 + plt_index * sizeof (Elf32_External_Rela)),
3203 splt->contents + h->plt.offset + 12);
3204 bfd_put_32 (output_bfd,
3205 (PLT_ENTRY_WORD4
3206 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3207 splt->contents + h->plt.offset + 16);
3208 }
3209 else
3210 {
3211 bfd_put_32 (output_bfd,
3212 PLT_ENTRY_WORD0 + got_offset,
3213 splt->contents + h->plt.offset);
3214 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3215 splt->contents + h->plt.offset + 4);
3216 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3217 splt->contents + h->plt.offset + 8);
3218 bfd_put_32 (output_bfd,
3219 (PLT_ENTRY_WORD3
3220 + plt_index * sizeof (Elf32_External_Rela)),
3221 splt->contents + h->plt.offset + 12);
3222 bfd_put_32 (output_bfd,
3223 (PLT_ENTRY_WORD4
3224 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3225 splt->contents + h->plt.offset + 16);
3226 }
41978308 3227
6edf0760
NC
3228 /* Fill in the entry in the global offset table. */
3229 bfd_put_32 (output_bfd,
3230 (splt->output_section->vma
3231 + splt->output_offset
3232 + h->plt.offset
3233 + 12), /* same offset */
3234 sgot->contents + got_offset);
3235
3236 /* Fill in the entry in the .rela.plt section. */
3237 rela.r_offset = (sgot->output_section->vma
3238 + sgot->output_offset
3239 + got_offset);
3240 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3241 rela.r_addend = 0;
3242 loc = srela->contents;
47b0e7ad 3243 loc += plt_index * sizeof (Elf32_External_Rela);
6edf0760 3244 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
41978308 3245
f5385ebf 3246 if (!h->def_regular)
6edf0760
NC
3247 {
3248 /* Mark the symbol as undefined, rather than as defined in
3249 the .plt section. Leave the value alone. */
3250 sym->st_shndx = SHN_UNDEF;
3251 }
3252 }
3253
3254 if (h->got.offset != (bfd_vma) -1)
3255 {
3256 asection *sgot;
3257 asection *srela;
3258 Elf_Internal_Rela rela;
41978308 3259
6edf0760
NC
3260 /* This symbol has an entry in the global offset table. Set it
3261 up. */
41978308 3262
6edf0760
NC
3263 sgot = htab->sgot;
3264 srela = htab->srelgot;
3265 BFD_ASSERT (sgot != NULL && srela != NULL);
41978308 3266
6edf0760
NC
3267 rela.r_offset = (sgot->output_section->vma
3268 + sgot->output_offset
3269 + (h->got.offset &~ 1));
41978308 3270
6edf0760
NC
3271 /* If this is a -Bsymbolic link, and the symbol is defined
3272 locally, we just want to emit a RELATIVE reloc. Likewise if
3273 the symbol was forced to be local because of a version file.
3274 The entry in the global offset table will already have been
3275 initialized in the relocate_section function. */
3276 if (info->shared
3277 && (info->symbolic
3278 || h->dynindx == -1
f5385ebf
AM
3279 || h->forced_local)
3280 && h->def_regular)
6edf0760
NC
3281 {
3282 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3283 rela.r_addend = (h->root.u.def.value
3284 + h->root.u.def.section->output_section->vma
3285 + h->root.u.def.section->output_offset);
3286 }
3287 else
3288 {
47b0e7ad 3289 BFD_ASSERT ((h->got.offset & 1) == 0);
6edf0760
NC
3290 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3291 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3292 rela.r_addend = 0;
3293 }
41978308 3294
6edf0760 3295 loc = srela->contents;
47b0e7ad 3296 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC
3297 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3298 ++srela->reloc_count;
3299 }
41978308 3300
f5385ebf 3301 if (h->needs_copy)
6edf0760
NC
3302 {
3303 asection *s;
3304 Elf_Internal_Rela rela;
41978308 3305
6edf0760 3306 /* This symbols needs a copy reloc. Set it up. */
41978308 3307
6edf0760
NC
3308 BFD_ASSERT (h->dynindx != -1
3309 && (h->root.type == bfd_link_hash_defined
3310 || h->root.type == bfd_link_hash_defweak));
41978308 3311
6edf0760
NC
3312 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3313 ".rela.bss");
3314 BFD_ASSERT (s != NULL);
41978308 3315
6edf0760
NC
3316 rela.r_offset = (h->root.u.def.value
3317 + h->root.u.def.section->output_section->vma
3318 + h->root.u.def.section->output_offset);
3319 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3320 rela.r_addend = 0;
3321 loc = s->contents;
47b0e7ad 3322 loc += s->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC
3323 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3324 ++s->reloc_count;
3325 }
41978308 3326
6edf0760
NC
3327 /* Mark some specially defined symbols as absolute. */
3328 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3329 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3330 sym->st_shndx = SHN_ABS;
41978308 3331
6edf0760
NC
3332 return TRUE;
3333}
3334
3335
3336/* Finish up the dynamic sections. */
41978308 3337
6edf0760 3338static bfd_boolean
47b0e7ad
NC
3339m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3340 struct bfd_link_info *info)
6edf0760
NC
3341{
3342 struct elf_m32r_link_hash_table *htab;
3343 bfd *dynobj;
3344 asection *sdyn;
3345 asection *sgot;
3346
3347#ifdef DEBUG_PIC
47b0e7ad 3348 printf ("m32r_elf_finish_dynamic_sections()\n");
6edf0760 3349#endif
41978308 3350
6edf0760
NC
3351 htab = m32r_elf_hash_table (info);
3352 dynobj = htab->root.dynobj;
3353
3354 sgot = htab->sgotplt;
3355 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
41978308 3356
6edf0760
NC
3357 if (htab->root.dynamic_sections_created)
3358 {
3359 asection *splt;
3360 Elf32_External_Dyn *dyncon, *dynconend;
41978308 3361
6edf0760 3362 BFD_ASSERT (sgot != NULL && sdyn != NULL);
41978308 3363
6edf0760 3364 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3365 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6edf0760
NC
3366
3367 for (; dyncon < dynconend; dyncon++)
3368 {
3369 Elf_Internal_Dyn dyn;
3370 const char *name;
3371 asection *s;
41978308 3372
6edf0760 3373 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
41978308 3374
6edf0760
NC
3375 switch (dyn.d_tag)
3376 {
3377 default:
3378 break;
3379
3380 case DT_PLTGOT:
3381 name = ".got";
41978308 3382 s = htab->sgot->output_section;
6edf0760
NC
3383 goto get_vma;
3384 case DT_JMPREL:
3385 name = ".rela.plt";
3386 s = htab->srelplt->output_section;
3387 get_vma:
3388 BFD_ASSERT (s != NULL);
3389 dyn.d_un.d_ptr = s->vma;
3390 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3391 break;
3392
3393 case DT_PLTRELSZ:
3394 s = htab->srelplt->output_section;
3395 BFD_ASSERT (s != NULL);
eea6121a 3396 dyn.d_un.d_val = s->size;
6edf0760
NC
3397 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3398 break;
3399
3400 case DT_RELASZ:
3401 /* My reading of the SVR4 ABI indicates that the
3402 procedure linkage table relocs (DT_JMPREL) should be
3403 included in the overall relocs (DT_RELA). This is
3404 what Solaris does. However, UnixWare can not handle
3405 that case. Therefore, we override the DT_RELASZ entry
3406 here to make it not include the JMPREL relocs. Since
3407 the linker script arranges for .rela.plt to follow all
3408 other relocation sections, we don't have to worry
3409 about changing the DT_RELA entry. */
3410 if (htab->srelplt != NULL)
3411 {
3412 s = htab->srelplt->output_section;
eea6121a 3413 dyn.d_un.d_val -= s->size;
6edf0760
NC
3414 }
3415 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3416 break;
3417 }
3418 }
41978308 3419
6edf0760
NC
3420 /* Fill in the first entry in the procedure linkage table. */
3421 splt = htab->splt;
eea6121a 3422 if (splt && splt->size > 0)
6edf0760
NC
3423 {
3424 if (info->shared)
3425 {
3426 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3427 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3428 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3429 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3430 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3431 }
3432 else
3433 {
3434 unsigned long addr;
3435 /* addr = .got + 4 */
3436 addr = sgot->output_section->vma + sgot->output_offset + 4;
3437 bfd_put_32 (output_bfd,
3438 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3439 splt->contents);
41978308 3440 bfd_put_32 (output_bfd,
6edf0760
NC
3441 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3442 splt->contents + 4);
3443 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3444 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3445 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3446 }
3447
3448 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3449 PLT_ENTRY_SIZE;
3450 }
3451 }
3452
3453 /* Fill in the first three entries in the global offset table. */
eea6121a 3454 if (sgot && sgot->size > 0)
6edf0760
NC
3455 {
3456 if (sdyn == NULL)
3457 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3458 else
3459 bfd_put_32 (output_bfd,
3460 sdyn->output_section->vma + sdyn->output_offset,
3461 sgot->contents);
3462 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3463 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3464
3465 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3466 }
41978308 3467
6edf0760
NC
3468 return TRUE;
3469}
3470
252b5132
RH
3471\f
3472/* Set the right machine number. */
47b0e7ad 3473
b34976b6 3474static bfd_boolean
47b0e7ad 3475m32r_elf_object_p (bfd *abfd)
252b5132
RH
3476{
3477 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3478 {
3479 default:
3480 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
e916b64e 3481 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
88845958 3482 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
252b5132 3483 }
b34976b6 3484 return TRUE;
252b5132
RH
3485}
3486
3487/* Store the machine number in the flags field. */
47b0e7ad 3488
252b5132 3489static void
47b0e7ad
NC
3490m32r_elf_final_write_processing (bfd *abfd,
3491 bfd_boolean linker ATTRIBUTE_UNUSED)
252b5132
RH
3492{
3493 unsigned long val;
3494
3495 switch (bfd_get_mach (abfd))
3496 {
3497 default:
3498 case bfd_mach_m32r: val = E_M32R_ARCH; break;
e916b64e 3499 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
88845958 3500 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
252b5132
RH
3501 }
3502
3503 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3504 elf_elfheader (abfd)->e_flags |= val;
3505}
3506
c3668558 3507/* Function to keep M32R specific file flags. */
47b0e7ad 3508
b34976b6 3509static bfd_boolean
47b0e7ad 3510m32r_elf_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH
3511{
3512 BFD_ASSERT (!elf_flags_init (abfd)
3513 || elf_elfheader (abfd)->e_flags == flags);
3514
3515 elf_elfheader (abfd)->e_flags = flags;
b34976b6
AM
3516 elf_flags_init (abfd) = TRUE;
3517 return TRUE;
252b5132
RH
3518}
3519
252b5132
RH
3520/* Merge backend specific data from an object file to the output
3521 object file when linking. */
47b0e7ad 3522
b34976b6 3523static bfd_boolean
47b0e7ad 3524m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH
3525{
3526 flagword out_flags;
3527 flagword in_flags;
3528
3529 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3530 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 3531 return TRUE;
252b5132
RH
3532
3533 in_flags = elf_elfheader (ibfd)->e_flags;
3534 out_flags = elf_elfheader (obfd)->e_flags;
3535
3536 if (! elf_flags_init (obfd))
3537 {
3538 /* If the input is the default architecture then do not
3539 bother setting the flags for the output architecture,
3540 instead allow future merges to do this. If no future
3541 merges ever set these flags then they will retain their
3542 unitialised values, which surprise surprise, correspond
3543 to the default values. */
3544 if (bfd_get_arch_info (ibfd)->the_default)
b34976b6 3545 return TRUE;
c3668558 3546
b34976b6 3547 elf_flags_init (obfd) = TRUE;
252b5132
RH
3548 elf_elfheader (obfd)->e_flags = in_flags;
3549
3550 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3551 && bfd_get_arch_info (obfd)->the_default)
47b0e7ad
NC
3552 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3553 bfd_get_mach (ibfd));
252b5132 3554
b34976b6 3555 return TRUE;
252b5132
RH
3556 }
3557
3558 /* Check flag compatibility. */
3559 if (in_flags == out_flags)
b34976b6 3560 return TRUE;
252b5132
RH
3561
3562 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3563 {
88845958
NC
3564 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3565 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3566 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
252b5132 3567 {
8f615d07 3568 (*_bfd_error_handler)
d003868e 3569 (_("%B: Instruction set mismatch with previous modules"), ibfd);
252b5132
RH
3570
3571 bfd_set_error (bfd_error_bad_value);
b34976b6 3572 return FALSE;
252b5132
RH
3573 }
3574 }
3575
b34976b6 3576 return TRUE;
252b5132
RH
3577}
3578
47b0e7ad
NC
3579/* Display the flags field. */
3580
b34976b6 3581static bfd_boolean
47b0e7ad 3582m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132
RH
3583{
3584 FILE * file = (FILE *) ptr;
c3668558 3585
f12123c0 3586 BFD_ASSERT (abfd != NULL && ptr != NULL);
c3668558 3587
252b5132 3588 _bfd_elf_print_private_bfd_data (abfd, ptr);
c3668558 3589
252b5132 3590 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
c3668558 3591
252b5132
RH
3592 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3593 {
3594 default:
3595 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
e916b64e 3596 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
88845958 3597 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
252b5132 3598 }
c3668558 3599
252b5132 3600 fputc ('\n', file);
c3668558 3601
b34976b6 3602 return TRUE;
252b5132
RH
3603}
3604
47b0e7ad
NC
3605static asection *
3606m32r_elf_gc_mark_hook (asection *sec,
3607 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3608 Elf_Internal_Rela *rel,
3609 struct elf_link_hash_entry *h,
3610 Elf_Internal_Sym *sym)
252b5132
RH
3611{
3612 if (h != NULL)
3613 {
3614 switch (ELF32_R_TYPE (rel->r_info))
3615 {
3616 case R_M32R_GNU_VTINHERIT:
3617 case R_M32R_GNU_VTENTRY:
6edf0760
NC
3618 case R_M32R_RELA_GNU_VTINHERIT:
3619 case R_M32R_RELA_GNU_VTENTRY:
252b5132 3620 break;
c3668558 3621
252b5132
RH
3622 default:
3623 switch (h->root.type)
3624 {
3625 case bfd_link_hash_defined:
3626 case bfd_link_hash_defweak:
3627 return h->root.u.def.section;
c3668558 3628
252b5132
RH
3629 case bfd_link_hash_common:
3630 return h->root.u.c.p->section;
e049a0de
ILT
3631
3632 default:
3633 break;
252b5132
RH
3634 }
3635 }
3636 }
3637 else
1e2f5b6e
AM
3638 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3639
252b5132
RH
3640 return NULL;
3641}
3642
b34976b6 3643static bfd_boolean
47b0e7ad
NC
3644m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3645 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3646 asection *sec ATTRIBUTE_UNUSED,
3647 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
252b5132 3648{
6edf0760
NC
3649 /* Update the got entry reference counts for the section being removed. */
3650 Elf_Internal_Shdr *symtab_hdr;
3651 struct elf_link_hash_entry **sym_hashes;
3652 bfd_signed_vma *local_got_refcounts;
3653 const Elf_Internal_Rela *rel, *relend;
6edf0760
NC
3654
3655 elf_section_data (sec)->local_dynrel = NULL;
3656
3657 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3658 sym_hashes = elf_sym_hashes (abfd);
3659 local_got_refcounts = elf_local_got_refcounts (abfd);
3660
3661 relend = relocs + sec->reloc_count;
3662 for (rel = relocs; rel < relend; rel++)
3eb128b2
AM
3663 {
3664 unsigned long r_symndx;
3665 struct elf_link_hash_entry *h = NULL;
6edf0760 3666
3eb128b2
AM
3667 r_symndx = ELF32_R_SYM (rel->r_info);
3668 if (r_symndx >= symtab_hdr->sh_info)
3669 {
3670 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3671 while (h->root.type == bfd_link_hash_indirect
3672 || h->root.type == bfd_link_hash_warning)
3673 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3674 }
6edf0760 3675
3eb128b2
AM
3676 switch (ELF32_R_TYPE (rel->r_info))
3677 {
3678 case R_M32R_GOT16_HI_ULO:
3679 case R_M32R_GOT16_HI_SLO:
3680 case R_M32R_GOT16_LO:
3681 case R_M32R_GOTOFF:
3682 case R_M32R_GOTOFF_HI_ULO:
3683 case R_M32R_GOTOFF_HI_SLO:
3684 case R_M32R_GOTOFF_LO:
3685 case R_M32R_GOT24:
3686 case R_M32R_GOTPC_HI_ULO:
3687 case R_M32R_GOTPC_HI_SLO:
3688 case R_M32R_GOTPC_LO:
3689 case R_M32R_GOTPC24:
3690 if (h != NULL)
3691 {
3692 if (h->got.refcount > 0)
3693 h->got.refcount--;
3694 }
3695 else
3696 {
3697 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3698 local_got_refcounts[r_symndx]--;
3699 }
3700 break;
3701
3702 case R_M32R_16_RELA:
3703 case R_M32R_24_RELA:
3704 case R_M32R_32_RELA:
157e7bd1 3705 case R_M32R_REL32:
3eb128b2
AM
3706 case R_M32R_HI16_ULO_RELA:
3707 case R_M32R_HI16_SLO_RELA:
3708 case R_M32R_LO16_RELA:
3709 case R_M32R_SDA16_RELA:
3710 case R_M32R_18_PCREL_RELA:
3711 case R_M32R_26_PCREL_RELA:
3712 if (h != NULL)
3713 {
3714 struct elf_m32r_link_hash_entry *eh;
3715 struct elf_m32r_dyn_relocs **pp;
3716 struct elf_m32r_dyn_relocs *p;
6edf0760 3717
3eb128b2
AM
3718 if (!info->shared && h->plt.refcount > 0)
3719 h->plt.refcount -= 1;
6edf0760 3720
3eb128b2 3721 eh = (struct elf_m32r_link_hash_entry *) h;
6edf0760 3722
3eb128b2
AM
3723 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3724 if (p->sec == sec)
3725 {
3726 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
157e7bd1
NC
3727 || ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3728 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3eb128b2
AM
3729 p->pc_count -= 1;
3730 p->count -= 1;
3731 if (p->count == 0)
3732 *pp = p->next;
3733 break;
3734 }
3735 }
3736 break;
6edf0760 3737
3eb128b2
AM
3738 case R_M32R_26_PLTREL:
3739 if (h != NULL)
3740 {
3741 if (h->plt.refcount > 0)
3742 h->plt.refcount--;
3743 }
3744 break;
6edf0760 3745
3eb128b2
AM
3746 default:
3747 break;
3748 }
3749 }
6edf0760 3750
b34976b6 3751 return TRUE;
252b5132
RH
3752}
3753
252b5132
RH
3754/* Look through the relocs for a section during the first phase.
3755 Since we don't do .gots or .plts, we just need to consider the
3756 virtual table relocs for gc. */
c3668558 3757
b34976b6 3758static bfd_boolean
47b0e7ad
NC
3759m32r_elf_check_relocs (bfd *abfd,
3760 struct bfd_link_info *info,
3761 asection *sec,
3762 const Elf_Internal_Rela *relocs)
252b5132
RH
3763{
3764 Elf_Internal_Shdr *symtab_hdr;
3765 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3766 const Elf_Internal_Rela *rel;
3767 const Elf_Internal_Rela *rel_end;
6edf0760
NC
3768 struct elf_m32r_link_hash_table *htab;
3769 bfd *dynobj;
3770 bfd_vma *local_got_offsets;
3771 asection *sgot, *srelgot, *sreloc;
c3668558 3772
1049f94e 3773 if (info->relocatable)
b34976b6 3774 return TRUE;
c3668558 3775
6edf0760
NC
3776 sgot = srelgot = sreloc = NULL;
3777
252b5132
RH
3778 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3779 sym_hashes = elf_sym_hashes (abfd);
c3668558 3780 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
252b5132
RH
3781 if (!elf_bad_symtab (abfd))
3782 sym_hashes_end -= symtab_hdr->sh_info;
c3668558 3783
6edf0760
NC
3784 htab = m32r_elf_hash_table (info);
3785 dynobj = htab->root.dynobj;
3786 local_got_offsets = elf_local_got_offsets (abfd);
3787
252b5132
RH
3788 rel_end = relocs + sec->reloc_count;
3789 for (rel = relocs; rel < rel_end; rel++)
3790 {
6edf0760 3791 int r_type;
252b5132
RH
3792 struct elf_link_hash_entry *h;
3793 unsigned long r_symndx;
c3668558 3794
252b5132 3795 r_symndx = ELF32_R_SYM (rel->r_info);
6edf0760 3796 r_type = ELF32_R_TYPE (rel->r_info);
252b5132
RH
3797 if (r_symndx < symtab_hdr->sh_info)
3798 h = NULL;
3799 else
973a3492
L
3800 {
3801 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3802 while (h->root.type == bfd_link_hash_indirect
3803 || h->root.type == bfd_link_hash_warning)
3804 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3805 }
c3668558 3806
6edf0760
NC
3807 /* Some relocs require a global offset table. */
3808 if (htab->sgot == NULL)
3809 {
3810 switch (r_type)
3811 {
3812 case R_M32R_GOT16_HI_ULO:
3813 case R_M32R_GOT16_HI_SLO:
097f809a
NC
3814 case R_M32R_GOTOFF:
3815 case R_M32R_GOTOFF_HI_ULO:
3816 case R_M32R_GOTOFF_HI_SLO:
3817 case R_M32R_GOTOFF_LO:
6edf0760
NC
3818 case R_M32R_GOT16_LO:
3819 case R_M32R_GOTPC24:
3820 case R_M32R_GOTPC_HI_ULO:
3821 case R_M32R_GOTPC_HI_SLO:
3822 case R_M32R_GOTPC_LO:
3823 case R_M32R_GOT24:
3824 if (dynobj == NULL)
3825 htab->root.dynobj = dynobj = abfd;
3826 if (! create_got_section (dynobj, info))
3827 return FALSE;
3828 break;
3829
3830 default:
3831 break;
3832 }
3833 }
3834
3835 switch (r_type)
252b5132 3836 {
6edf0760
NC
3837 case R_M32R_GOT16_HI_ULO:
3838 case R_M32R_GOT16_HI_SLO:
41978308 3839 case R_M32R_GOT16_LO:
6edf0760
NC
3840 case R_M32R_GOT24:
3841
3842 if (h != NULL)
3843 h->got.refcount += 1;
3844 else
3845 {
3846 bfd_signed_vma *local_got_refcounts;
3847
3848 /* This is a global offset table entry for a local
3849 symbol. */
3850 local_got_refcounts = elf_local_got_refcounts (abfd);
3851 if (local_got_refcounts == NULL)
3852 {
3853 bfd_size_type size;
3854
3855 size = symtab_hdr->sh_info;
3856 size *= sizeof (bfd_signed_vma);
47b0e7ad 3857 local_got_refcounts = bfd_zalloc (abfd, size);
6edf0760
NC
3858 if (local_got_refcounts == NULL)
3859 return FALSE;
3860 elf_local_got_refcounts (abfd) = local_got_refcounts;
3861 }
3862 local_got_refcounts[r_symndx] += 1;
3863 }
3864 break;
3865
3866 case R_M32R_26_PLTREL:
3867 /* This symbol requires a procedure linkage table entry. We
3868 actually build the entry in adjust_dynamic_symbol,
3869 because this might be a case of linking PIC code without
3870 linking in any dynamic objects, in which case we don't
3871 need to generate a procedure linkage table after all. */
41978308 3872
6edf0760
NC
3873 /* If this is a local symbol, we resolve it directly without
3874 creating a procedure linkage table entry. */
3875 if (h == NULL)
3876 continue;
3877
f5385ebf 3878 if (h->forced_local)
6edf0760
NC
3879 break;
3880
f5385ebf 3881 h->needs_plt = 1;
6edf0760
NC
3882 h->plt.refcount += 1;
3883 break;
3884
3885 case R_M32R_16_RELA:
3886 case R_M32R_24_RELA:
3887 case R_M32R_32_RELA:
157e7bd1 3888 case R_M32R_REL32:
6edf0760
NC
3889 case R_M32R_HI16_ULO_RELA:
3890 case R_M32R_HI16_SLO_RELA:
3891 case R_M32R_LO16_RELA:
3892 case R_M32R_SDA16_RELA:
3893 case R_M32R_18_PCREL_RELA:
3894 case R_M32R_26_PCREL_RELA:
3895
3896 if (h != NULL && !info->shared)
3897 {
f5385ebf 3898 h->non_got_ref = 1;
6edf0760
NC
3899 h->plt.refcount += 1;
3900 }
3901
3902 /* If we are creating a shared library, and this is a reloc
3903 against a global symbol, or a non PC relative reloc
3904 against a local symbol, then we need to copy the reloc
3905 into the shared library. However, if we are linking with
3906 -Bsymbolic, we do not need to copy a reloc against a
3907 global symbol which is defined in an object we are
3908 including in the link (i.e., DEF_REGULAR is set). At
3909 this point we have not seen all the input files, so it is
3910 possible that DEF_REGULAR is not set now but will be set
3911 later (it is never cleared). We account for that
3912 possibility below by storing information in the
3913 dyn_relocs field of the hash table entry. A similar
3914 situation occurs when creating shared libraries and symbol
3915 visibility changes render the symbol local.
3916
3917 If on the other hand, we are creating an executable, we
3918 may need to keep relocations for symbols satisfied by a
3919 dynamic library if we manage to avoid copy relocs for the
3920 symbol. */
3921 if ((info->shared
3922 && (sec->flags & SEC_ALLOC) != 0
3923 && ((r_type != R_M32R_26_PCREL_RELA
157e7bd1
NC
3924 && r_type != R_M32R_18_PCREL_RELA
3925 && r_type != R_M32R_REL32)
6edf0760
NC
3926 || (h != NULL
3927 && (! info->symbolic
3928 || h->root.type == bfd_link_hash_defweak
f5385ebf 3929 || !h->def_regular))))
6edf0760
NC
3930 || (!info->shared
3931 && (sec->flags & SEC_ALLOC) != 0
3932 && h != NULL
3933 && (h->root.type == bfd_link_hash_defweak
f5385ebf 3934 || !h->def_regular)))
6edf0760
NC
3935 {
3936 struct elf_m32r_dyn_relocs *p;
3937 struct elf_m32r_dyn_relocs **head;
3938
3939 if (dynobj == NULL)
3940 htab->root.dynobj = dynobj = abfd;
3941
3942 /* When creating a shared object, we must copy these
3943 relocs into the output file. We create a reloc
3944 section in dynobj and make room for the reloc. */
3945 if (sreloc == NULL)
3946 {
3947 const char *name;
41978308 3948
6edf0760
NC
3949 name = (bfd_elf_string_from_elf_section
3950 (abfd,
3951 elf_elfheader (abfd)->e_shstrndx,
3952 elf_section_data (sec)->rel_hdr.sh_name));
3953 if (name == NULL)
3954 return FALSE;
41978308 3955
6edf0760
NC
3956 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3957 && strcmp (bfd_get_section_name (abfd, sec),
3958 name + 5) == 0);
41978308 3959
6edf0760
NC
3960 sreloc = bfd_get_section_by_name (dynobj, name);
3961 if (sreloc == NULL)
3962 {
3963 flagword flags;
41978308 3964
6edf0760
NC
3965 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3966 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3967 if ((sec->flags & SEC_ALLOC) != 0)
3968 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L
3969 sreloc = bfd_make_section_with_flags (dynobj,
3970 name,
3971 flags);
6edf0760 3972 if (sreloc == NULL
6edf0760
NC
3973 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
3974 return FALSE;
3975 }
3976 elf_section_data (sec)->sreloc = sreloc;
3977 }
41978308 3978
6edf0760
NC
3979 /* If this is a global symbol, we count the number of
3980 relocations we need for this symbol. */
3981 if (h != NULL)
3982 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3983 else
3984 {
3985 asection *s;
3986
3987 /* Track dynamic relocs needed for local syms too. */
3988 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3989 sec, r_symndx);
3990 if (s == NULL)
3991 return FALSE;
3992
3993 head = ((struct elf_m32r_dyn_relocs **)
3994 &elf_section_data (s)->local_dynrel);
3995 }
3996
3997 p = *head;
3998 if (p == NULL || p->sec != sec)
3999 {
4000 bfd_size_type amt = sizeof (*p);
47b0e7ad
NC
4001
4002 p = bfd_alloc (dynobj, amt);
6edf0760
NC
4003 if (p == NULL)
4004 return FALSE;
4005 p->next = *head;
4006 *head = p;
4007 p->sec = sec;
4008 p->count = 0;
4009 p->pc_count = 0;
4010 }
4011
4012 p->count += 1;
4013 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
a9b7b174 4014 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32
6edf0760
NC
4015 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA)
4016 p->pc_count += 1;
4017 }
4018 break;
4019
252b5132
RH
4020 /* This relocation describes the C++ object vtable hierarchy.
4021 Reconstruct it for later use during GC. */
6edf0760 4022 case R_M32R_RELA_GNU_VTINHERIT:
252b5132 4023 case R_M32R_GNU_VTINHERIT:
c152c796 4024 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4025 return FALSE;
252b5132 4026 break;
c3668558 4027
252b5132
RH
4028 /* This relocation describes which C++ vtable entries are actually
4029 used. Record for later use during GC. */
4030 case R_M32R_GNU_VTENTRY:
c152c796 4031 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 4032 return FALSE;
252b5132 4033 break;
6edf0760 4034 case R_M32R_RELA_GNU_VTENTRY:
c152c796 4035 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
6edf0760
NC
4036 return FALSE;
4037 break;
252b5132
RH
4038 }
4039 }
c3668558 4040
b34976b6 4041 return TRUE;
252b5132 4042}
2f89ff8d 4043
b35d266b 4044static const struct bfd_elf_special_section m32r_elf_special_sections[] =
2f89ff8d 4045{
7dcb9820 4046 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
551b43fd
AM
4047 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4048 { NULL, 0, 0, 0, 0 }
7f4d3958
L
4049};
4050
6edf0760 4051static bfd_boolean
47b0e7ad
NC
4052m32r_elf_fake_sections (bfd *abfd,
4053 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4054 asection *sec)
6edf0760 4055{
47b0e7ad 4056 const char *name;
6edf0760
NC
4057
4058 name = bfd_get_section_name (abfd, sec);
4059
4060 /* The generic elf_fake_sections will set up REL_HDR using the
4061 default kind of relocations. But, we may actually need both
4062 kinds of relocations, so we set up the second header here.
4063
4064 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4065 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4066 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4067 of the resulting empty .rela.<section> sections starts with
4068 sh_offset == object size, and ld doesn't allow that. While the check
4069 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4070 avoided by not emitting those useless sections in the first place. */
4071 if ((sec->flags & SEC_RELOC) != 0)
4072 {
4073 struct bfd_elf_section_data *esd;
4074 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4075
4076 esd = elf_section_data (sec);
4077 BFD_ASSERT (esd->rel_hdr2 == NULL);
47b0e7ad 4078 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
6edf0760
NC
4079 if (!esd->rel_hdr2)
4080 return FALSE;
4081 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4082 !sec->use_rela_p);
4083 }
4084
4085 return TRUE;
4086}
4087
4088static enum elf_reloc_type_class
47b0e7ad 4089m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6edf0760
NC
4090{
4091 switch ((int) ELF32_R_TYPE (rela->r_info))
4092 {
47b0e7ad
NC
4093 case R_M32R_RELATIVE: return reloc_class_relative;
4094 case R_M32R_JMP_SLOT: return reloc_class_plt;
4095 case R_M32R_COPY: return reloc_class_copy;
4096 default: return reloc_class_normal;
6edf0760
NC
4097 }
4098}
252b5132 4099\f
252b5132 4100#define ELF_ARCH bfd_arch_m32r
aa4f99bb
AO
4101#define ELF_MACHINE_CODE EM_M32R
4102#define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
e916b64e 4103#define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
252b5132
RH
4104
4105#define TARGET_BIG_SYM bfd_elf32_m32r_vec
4106#define TARGET_BIG_NAME "elf32-m32r"
6edf0760
NC
4107#define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4108#define TARGET_LITTLE_NAME "elf32-m32rle"
252b5132 4109
6edf0760 4110#define elf_info_to_howto m32r_info_to_howto
252b5132
RH
4111#define elf_info_to_howto_rel m32r_info_to_howto_rel
4112#define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4113#define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4114#define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4115#define elf_backend_relocate_section m32r_elf_relocate_section
4116#define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4117#define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4118#define elf_backend_check_relocs m32r_elf_check_relocs
4119
6edf0760
NC
4120#define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4121#define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4122#define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4123#define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4124#define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4125#define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4126#define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4127#define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4128
252b5132 4129#define elf_backend_can_gc_sections 1
6edf0760 4130/*#if !USE_REL
b491616a 4131#define elf_backend_rela_normal 1
6edf0760
NC
4132#endif*/
4133#define elf_backend_can_refcount 1
4134#define elf_backend_want_got_plt 1
4135#define elf_backend_plt_readonly 1
4136#define elf_backend_want_plt_sym 0
4137#define elf_backend_got_header_size 12
4138
4139#define elf_backend_may_use_rel_p 1
4140#ifdef USE_M32R_OLD_RELOC
4141#define elf_backend_default_use_rela_p 0
4142#define elf_backend_may_use_rela_p 0
4143#else
4144#define elf_backend_default_use_rela_p 1
4145#define elf_backend_may_use_rela_p 1
4146#define elf_backend_fake_sections m32r_elf_fake_sections
b491616a 4147#endif
6edf0760 4148
252b5132
RH
4149#define elf_backend_object_p m32r_elf_object_p
4150#define elf_backend_final_write_processing m32r_elf_final_write_processing
252b5132
RH
4151#define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4152#define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4153#define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
29ef7005 4154#define elf_backend_special_sections m32r_elf_special_sections
c3668558 4155
252b5132 4156#include "elf32-target.h"
6edf0760 4157
47b0e7ad 4158#undef ELF_MAXPAGESIZE
6edf0760
NC
4159#define ELF_MAXPAGESIZE 0x1000
4160
47b0e7ad 4161#undef TARGET_BIG_SYM
6edf0760 4162#define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
47b0e7ad 4163#undef TARGET_BIG_NAME
6edf0760 4164#define TARGET_BIG_NAME "elf32-m32r-linux"
47b0e7ad 4165#undef TARGET_LITTLE_SYM
6edf0760 4166#define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
47b0e7ad 4167#undef TARGET_LITTLE_NAME
6edf0760 4168#define TARGET_LITTLE_NAME "elf32-m32rle-linux"
47b0e7ad 4169#undef elf32_bed
6edf0760
NC
4170#define elf32_bed elf32_m32r_lin_bed
4171
4172#include "elf32-target.h"
4173
This page took 0.544319 seconds and 4 git commands to generate.