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Test for PR gdb/17511, spurious SIGTRAP after stepping into+in signal handler
[deliverable/binutils-gdb.git] / bfd / elf32-m32r.c
CommitLineData
252b5132 1/* M32R-specific support for 32-bit ELF.
4b95cf5c 2 Copyright (C) 1996-2014 Free Software Foundation, Inc.
252b5132 3
88845958 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
88845958
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
88845958 9 (at your option) any later version.
252b5132 10
88845958
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
88845958
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 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
157090f7
AM		 1257static reloc_howto_type *
1258bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1259 const char *r_name)
1260{
1261 unsigned int i;
1262
1263 for (i = 0;
1264 i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
1265 i++)
1266 if (m32r_elf_howto_table[i].name != NULL
1267 && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
1268 return &m32r_elf_howto_table[i];
1269
1270 return NULL;
1271}
1272
252b5132
RH		 1273/* Set the howto pointer for an M32R ELF reloc. */
1274
1275static void
47b0e7ad
NC		 1276m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1277 arelent *cache_ptr,
1278 Elf_Internal_Rela *dst)
252b5132
RH		 1279{
1280 unsigned int r_type;
1281
1282 r_type = ELF32_R_TYPE (dst->r_info);
f12123c0 1283 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
252b5132
RH		 1284 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1285}
6edf0760
NC		 1286
1287static void
47b0e7ad
NC		 1288m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1289 arelent *cache_ptr,
1290 Elf_Internal_Rela *dst)
6edf0760
NC		 1291{
1292 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1293 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1294 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1295 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1296}
1297
252b5132
RH		 1298\f
1299/* Given a BFD section, try to locate the corresponding ELF section
1300 index. */
1301
47b0e7ad
NC		 1302static bfd_boolean
1303_bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1304 asection *sec,
1305 int *retval)
252b5132
RH		 1306{
1307 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1308 {
1309 *retval = SHN_M32R_SCOMMON;
b34976b6 1310 return TRUE;
252b5132 1311 }
b34976b6 1312 return FALSE;
252b5132
RH		 1313}
1314
1315/* M32R ELF uses two common sections. One is the usual one, and the other
1316 is for small objects. All the small objects are kept together, and then
1317 referenced via one register, which yields faster assembler code. It is
1318 up to the compiler to emit an instruction to load the register with
1319 _SDA_BASE. This is what we use for the small common section. This
1320 approach is copied from elf32-mips.c. */
1321static asection m32r_elf_scom_section;
1322static asymbol m32r_elf_scom_symbol;
1323static asymbol *m32r_elf_scom_symbol_ptr;
1324
1325/* Handle the special M32R section numbers that a symbol may use. */
1326
47b0e7ad
NC		 1327static void
1328_bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
252b5132 1329{
47b0e7ad 1330 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
252b5132
RH		 1331
1332 switch (elfsym->internal_elf_sym.st_shndx)
1333 {
1334 case SHN_M32R_SCOMMON:
1335 if (m32r_elf_scom_section.name == NULL)
1336 {
1337 /* Initialize the small common section. */
1338 m32r_elf_scom_section.name = ".scommon";
1339 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1340 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1341 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1342 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1343 m32r_elf_scom_symbol.name = ".scommon";
1344 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1345 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1346 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1347 }
1348 asym->section = &m32r_elf_scom_section;
1349 asym->value = elfsym->internal_elf_sym.st_size;
1350 break;
1351 }
1352}
1353
1354/* Hook called by the linker routine which adds symbols from an object
1355 file. We must handle the special M32R section numbers here.
1356 We also keep watching for whether we need to create the sdata special
1357 linker sections. */
1358
b34976b6 1359static bfd_boolean
47b0e7ad
NC		 1360m32r_elf_add_symbol_hook (bfd *abfd,
1361 struct bfd_link_info *info,
1362 Elf_Internal_Sym *sym,
1363 const char **namep,
1364 flagword *flagsp ATTRIBUTE_UNUSED,
1365 asection **secp,
1366 bfd_vma *valp)
252b5132 1367{
1049f94e 1368 if (! info->relocatable
252b5132 1369 && (*namep)[0] == '_' && (*namep)[1] == 'S'
4ab82700 1370 && strcmp (*namep, "_SDA_BASE_") == 0
0eddce27 1371 && is_elf_hash_table (info->hash))
252b5132
RH		 1372 {
1373 /* This is simpler than using _bfd_elf_create_linker_section
1374 (our needs are simpler than ppc's needs). Also
1375 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1376 section already exists a new one is created that follows it which
1377 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1378 struct elf_link_hash_entry *h;
14a793b2 1379 struct bfd_link_hash_entry *bh;
252b5132
RH		 1380 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1381
6edf0760 1382 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
6edf0760
NC		 1383 if (s == NULL)
1384 {
1385 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1386 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1387
3496cb2a
L		 1388 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1389 flags);
6edf0760
NC		 1390 if (s == NULL)
1391 return FALSE;
a253d456
NC		 1392 if (! bfd_set_section_alignment (abfd, s, 2))
1393 return FALSE;
6edf0760
NC		 1394 }
1395
1396 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1397 FALSE, FALSE, FALSE);
1398
1399 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1400 && !(_bfd_generic_link_add_one_symbol (info,
1401 abfd,
1402 "_SDA_BASE_",
1403 BSF_GLOBAL,
1404 s,
1405 (bfd_vma) 32768,
47b0e7ad 1406 NULL,
6edf0760
NC		 1407 FALSE,
1408 get_elf_backend_data (abfd)->collect,
1409 &bh)))
1410 return FALSE;
1411 h = (struct elf_link_hash_entry *) bh;
1412 h->type = STT_OBJECT;
1413 }
1414
1415 switch (sym->st_shndx)
1416 {
1417 case SHN_M32R_SCOMMON:
1418 *secp = bfd_make_section_old_way (abfd, ".scommon");
1419 (*secp)->flags |= SEC_IS_COMMON;
1420 *valp = sym->st_size;
1421 break;
1422 }
1423
1424 return TRUE;
1425}
1426
1427/* We have to figure out the SDA_BASE value, so that we can adjust the
1428 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1429 BFD. If we can't find it, we're stuck. We cache it in the ELF
1430 target data. We don't need to adjust the symbol value for an
1431 external symbol if we are producing relocatable output. */
1432
1433static bfd_reloc_status_type
47b0e7ad
NC		 1434m32r_elf_final_sda_base (bfd *output_bfd,
1435 struct bfd_link_info *info,
1436 const char **error_message,
1437 bfd_vma *psb)
6edf0760
NC		 1438{
1439 if (elf_gp (output_bfd) == 0)
1440 {
1441 struct bfd_link_hash_entry *h;
1442
1443 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
47b0e7ad 1444 if (h != NULL && h->type == bfd_link_hash_defined)
6edf0760
NC		 1445 elf_gp (output_bfd) = (h->u.def.value
1446 + h->u.def.section->output_section->vma
1447 + h->u.def.section->output_offset);
1448 else
1449 {
1450 /* Only get the error once. */
1451 *psb = elf_gp (output_bfd) = 4;
1452 *error_message =
1453 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1454 return bfd_reloc_dangerous;
1455 }
1456 }
1457 *psb = elf_gp (output_bfd);
1458 return bfd_reloc_ok;
1459}
1460\f
1461/* Return size of a PLT entry. */
1462#define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1463
1464/* The m32r linker needs to keep track of the number of relocs that it
1465 decides to copy in check_relocs for each symbol. This is so that
1466 it can discard PC relative relocs if it doesn't need them when
1467 linking with -Bsymbolic. We store the information in a field
1468 extending the regular ELF linker hash table. */
1469
1470/* This structure keeps track of the number of PC relative relocs we
1471 have copied for a given symbol. */
1472
1473struct elf_m32r_pcrel_relocs_copied
1474{
1475 /* Next section. */
1476 struct elf_m32r_pcrel_relocs_copied *next;
1477 /* A section in dynobj. */
1478 asection *section;
1479 /* Number of relocs copied in this section. */
1480 bfd_size_type count;
1481};
1482
1483/* The sh linker needs to keep track of the number of relocs that it
1484 decides to copy as dynamic relocs in check_relocs for each symbol.
1485 This is so that it can later discard them if they are found to be
1486 unnecessary. We store the information in a field extending the
1487 regular ELF linker hash table. */
1488
1489struct elf_m32r_dyn_relocs
1490{
1491 struct elf_m32r_dyn_relocs *next;
1492
1493 /* The input section of the reloc. */
1494 asection *sec;
1495
1496 /* Total number of relocs copied for the input section. */
1497 bfd_size_type count;
1498
1499 /* Number of pc-relative relocs copied for the input section. */
1500 bfd_size_type pc_count;
1501};
1502
1503
1504/* m32r ELF linker hash entry. */
1505
1506struct elf_m32r_link_hash_entry
1507{
1508 struct elf_link_hash_entry root;
1509
1510 /* Track dynamic relocs copied for this symbol. */
1511 struct elf_m32r_dyn_relocs *dyn_relocs;
6edf0760
NC		 1512};
1513
1514/* m32r ELF linker hash table. */
1515
1516struct elf_m32r_link_hash_table
1517{
1518 struct elf_link_hash_table root;
1519
1520 /* Short-cuts to get to dynamic linker sections. */
1521 asection *sgot;
1522 asection *sgotplt;
1523 asection *srelgot;
1524 asection *splt;
1525 asection *srelplt;
1526 asection *sdynbss;
1527 asection *srelbss;
1528
87d72d41
AM		 1529 /* Small local sym cache. */
1530 struct sym_cache sym_cache;
6edf0760
NC		 1531};
1532
1533/* Traverse an m32r ELF linker hash table. */
1534
1535#define m32r_elf_link_hash_traverse(table, func, info) \
1536 (elf_link_hash_traverse \
1537 (&(table)->root, \
47b0e7ad 1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
6edf0760
NC		 1539 (info)))
1540
1541/* Get the m32r ELF linker hash table from a link_info structure. */
1542
6edf0760 1543#define m32r_elf_hash_table(p) \
4dfe6ac6
NC		 1544 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1545 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
6edf0760
NC		 1546
1547/* Create an entry in an m32r ELF linker hash table. */
6edf0760
NC		 1548
1549static struct bfd_hash_entry *
47b0e7ad
NC		 1550m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1551 struct bfd_hash_table *table,
1552 const char *string)
6edf0760
NC		 1553{
1554 struct elf_m32r_link_hash_entry *ret =
1555 (struct elf_m32r_link_hash_entry *) entry;
41978308 1556
6edf0760
NC		 1557 /* Allocate the structure if it has not already been allocated by a
1558 subclass. */
47b0e7ad
NC		 1559 if (ret == NULL)
1560 ret = bfd_hash_allocate (table,
1561 sizeof (struct elf_m32r_link_hash_entry));
1562 if (ret == NULL)
1563 return NULL;
41978308 1564
6edf0760
NC		 1565 /* Call the allocation method of the superclass. */
1566 ret = ((struct elf_m32r_link_hash_entry *)
1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1568 table, string));
47b0e7ad 1569 if (ret != NULL)
6edf0760
NC		 1570 {
1571 struct elf_m32r_link_hash_entry *eh;
41978308 1572
6edf0760
NC		 1573 eh = (struct elf_m32r_link_hash_entry *) ret;
1574 eh->dyn_relocs = NULL;
6edf0760 1575 }
41978308 1576
6edf0760
NC		 1577 return (struct bfd_hash_entry *) ret;
1578}
1579
1580/* Create an m32r ELF linker hash table. */
6edf0760
NC		 1581
1582static struct bfd_link_hash_table *
47b0e7ad 1583m32r_elf_link_hash_table_create (bfd *abfd)
6edf0760
NC		 1584{
1585 struct elf_m32r_link_hash_table *ret;
1586 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
41978308 1587
7bf52ea2 1588 ret = bfd_zmalloc (amt);
47b0e7ad 1589 if (ret == NULL)
6edf0760 1590 return NULL;
41978308 1591
66eb6687
AM		 1592 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1593 m32r_elf_link_hash_newfunc,
4dfe6ac6
NC		 1594 sizeof (struct elf_m32r_link_hash_entry),
1595 M32R_ELF_DATA))
6edf0760
NC		 1596 {
1597 free (ret);
1598 return NULL;
1599 }
41978308 1600
6edf0760
NC		 1601 return &ret->root.root;
1602}
1603
1604/* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1605 shortcuts to them in our hash table. */
6edf0760
NC		 1606
1607static bfd_boolean
47b0e7ad 1608create_got_section (bfd *dynobj, struct bfd_link_info *info)
6edf0760
NC		 1609{
1610 struct elf_m32r_link_hash_table *htab;
1611
1612 if (! _bfd_elf_create_got_section (dynobj, info))
1613 return FALSE;
1614
1615 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 1616 if (htab == NULL)
1617 return FALSE;
1618
3d4d4302
AM		 1619 htab->sgot = bfd_get_linker_section (dynobj, ".got");
1620 htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
1621 htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got");
64e77c6d 1622 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
6edf0760
NC		 1623 abort ();
1624
6edf0760
NC		 1625 return TRUE;
1626}
1627
1628/* Create dynamic sections when linking against a dynamic object. */
1629
1630static bfd_boolean
47b0e7ad 1631m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
6edf0760
NC		 1632{
1633 struct elf_m32r_link_hash_table *htab;
1634 flagword flags, pltflags;
47b0e7ad 1635 asection *s;
6edf0760
NC		 1636 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1637 int ptralign = 2; /* 32bit */
1638
1639 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 1640 if (htab == NULL)
1641 return FALSE;
6edf0760
NC		 1642
1643 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1644 .rel[a].bss sections. */
6edf0760
NC		 1645 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1646 | SEC_LINKER_CREATED);
1647
1648 pltflags = flags;
1649 pltflags |= SEC_CODE;
1650 if (bed->plt_not_loaded)
1651 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1652 if (bed->plt_readonly)
1653 pltflags |= SEC_READONLY;
1654
3d4d4302 1655 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
6edf0760
NC		 1656 htab->splt = s;
1657 if (s == NULL
6edf0760
NC		 1658 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1659 return FALSE;
1660
1661 if (bed->want_plt_sym)
1662 {
1663 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1664 .plt section. */
41978308
AM		 1665 struct bfd_link_hash_entry *bh = NULL;
1666 struct elf_link_hash_entry *h;
47b0e7ad 1667
6edf0760
NC		 1668 if (! (_bfd_generic_link_add_one_symbol
1669 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
47b0e7ad 1670 (bfd_vma) 0, NULL, FALSE,
41978308 1671 get_elf_backend_data (abfd)->collect, &bh)))
6edf0760 1672 return FALSE;
41978308 1673 h = (struct elf_link_hash_entry *) bh;
f5385ebf 1674 h->def_regular = 1;
6edf0760 1675 h->type = STT_OBJECT;
7325306f 1676 htab->root.hplt = h;
6edf0760
NC		 1677
1678 if (info->shared
c152c796 1679 && ! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC		 1680 return FALSE;
1681 }
1682
3d4d4302
AM		 1683 s = bfd_make_section_anyway_with_flags (abfd,
1684 bed->default_use_rela_p
1685 ? ".rela.plt" : ".rel.plt",
1686 flags | SEC_READONLY);
6edf0760
NC		 1687 htab->srelplt = s;
1688 if (s == NULL
6edf0760
NC		 1689 || ! bfd_set_section_alignment (abfd, s, ptralign))
1690 return FALSE;
1691
1692 if (htab->sgot == NULL
1693 && ! create_got_section (abfd, info))
1694 return FALSE;
1695
6edf0760
NC		 1696 if (bed->want_dynbss)
1697 {
1698 /* The .dynbss section is a place to put symbols which are defined
1699 by dynamic objects, are referenced by regular objects, and are
1700 not functions. We must allocate space for them in the process
1701 image and use a R_*_COPY reloc to tell the dynamic linker to
1702 initialize them at run time. The linker script puts the .dynbss
1703 section into the .bss section of the final image. */
3d4d4302
AM		 1704 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
1705 SEC_ALLOC | SEC_LINKER_CREATED);
6edf0760 1706 htab->sdynbss = s;
3496cb2a 1707 if (s == NULL)
6edf0760
NC		 1708 return FALSE;
1709 /* The .rel[a].bss section holds copy relocs. This section is not
1710 normally needed. We need to create it here, though, so that the
1711 linker will map it to an output section. We can't just create it
1712 only if we need it, because we will not know whether we need it
1713 until we have seen all the input files, and the first time the
1714 main linker code calls BFD after examining all the input files
1715 (size_dynamic_sections) the input sections have already been
1716 mapped to the output sections. If the section turns out not to
1717 be needed, we can discard it later. We will never need this
1718 section when generating a shared object, since they do not use
1719 copy relocs. */
1720 if (! info->shared)
1721 {
3d4d4302
AM		 1722 s = bfd_make_section_anyway_with_flags (abfd,
1723 (bed->default_use_rela_p
1724 ? ".rela.bss" : ".rel.bss"),
1725 flags | SEC_READONLY);
6edf0760
NC		 1726 htab->srelbss = s;
1727 if (s == NULL
6edf0760
NC		 1728 || ! bfd_set_section_alignment (abfd, s, ptralign))
1729 return FALSE;
1730 }
1731 }
1732
1733 return TRUE;
1734}
1735
1736/* Copy the extra info we tack onto an elf_link_hash_entry. */
41978308 1737
6edf0760 1738static void
fcfa13d2 1739m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
6edf0760
NC		 1740 struct elf_link_hash_entry *dir,
1741 struct elf_link_hash_entry *ind)
1742{
47b0e7ad
NC		 1743 struct elf_m32r_link_hash_entry * edir;
1744 struct elf_m32r_link_hash_entry * eind;
41978308 1745
6edf0760
NC		 1746 edir = (struct elf_m32r_link_hash_entry *) dir;
1747 eind = (struct elf_m32r_link_hash_entry *) ind;
41978308 1748
6edf0760
NC		 1749 if (eind->dyn_relocs != NULL)
1750 {
1751 if (edir->dyn_relocs != NULL)
1752 {
1753 struct elf_m32r_dyn_relocs **pp;
1754 struct elf_m32r_dyn_relocs *p;
41978308 1755
fcfa13d2 1756 /* Add reloc counts against the indirect sym to the direct sym
6edf0760 1757 list. Merge any entries against the same section. */
47b0e7ad 1758 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
6edf0760
NC		 1759 {
1760 struct elf_m32r_dyn_relocs *q;
41978308 1761
6edf0760
NC		 1762 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1763 if (q->sec == p->sec)
1764 {
1765 q->pc_count += p->pc_count;
1766 q->count += p->count;
1767 *pp = p->next;
1768 break;
1769 }
1770 if (q == NULL)
1771 pp = &p->next;
1772 }
1773 *pp = edir->dyn_relocs;
1774 }
41978308 1775
6edf0760
NC		 1776 edir->dyn_relocs = eind->dyn_relocs;
1777 eind->dyn_relocs = NULL;
1778 }
41978308 1779
fcfa13d2 1780 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
6edf0760
NC		 1781}
1782
1783\f
1784/* Adjust a symbol defined by a dynamic object and referenced by a
1785 regular object. The current definition is in some section of the
1786 dynamic object, but we're not including those sections. We have to
1787 change the definition to something the rest of the link can
1788 understand. */
41978308 1789
6edf0760 1790static bfd_boolean
47b0e7ad
NC		 1791m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1792 struct elf_link_hash_entry *h)
6edf0760
NC		 1793{
1794 struct elf_m32r_link_hash_table *htab;
1795 struct elf_m32r_link_hash_entry *eh;
1796 struct elf_m32r_dyn_relocs *p;
1797 bfd *dynobj;
1798 asection *s;
6edf0760
NC		 1799
1800#ifdef DEBUG_PIC
47b0e7ad 1801 printf ("m32r_elf_adjust_dynamic_symbol()\n");
6edf0760 1802#endif
41978308 1803
6edf0760 1804 dynobj = elf_hash_table (info)->dynobj;
41978308 1805
6edf0760
NC		 1806 /* Make sure we know what is going on here. */
1807 BFD_ASSERT (dynobj != NULL
f5385ebf 1808 && (h->needs_plt
f6e332e6 1809 || h->u.weakdef != NULL
f5385ebf
AM		 1810 || (h->def_dynamic
1811 && h->ref_regular
1812 && !h->def_regular)));
6edf0760 1813
6edf0760
NC		 1814 /* If this is a function, put it in the procedure linkage table. We
1815 will fill in the contents of the procedure linkage table later,
1816 when we know the address of the .got section. */
1817 if (h->type == STT_FUNC
f5385ebf 1818 || h->needs_plt)
6edf0760
NC		 1819 {
1820 if (! info->shared
f5385ebf
AM		 1821 && !h->def_dynamic
1822 && !h->ref_dynamic
6edf0760
NC		 1823 && h->root.type != bfd_link_hash_undefweak
1824 && h->root.type != bfd_link_hash_undefined)
1825 {
1826 /* This case can occur if we saw a PLT reloc in an input
1827 file, but the symbol was never referred to by a dynamic
1828 object. In such a case, we don't actually need to build
1829 a procedure linkage table, and we can just do a PCREL
1830 reloc instead. */
1831 h->plt.offset = (bfd_vma) -1;
f5385ebf 1832 h->needs_plt = 0;
6edf0760
NC		 1833 }
1834
1835 return TRUE;
1836 }
1837 else
1838 h->plt.offset = (bfd_vma) -1;
41978308 1839
6edf0760
NC		 1840 /* If this is a weak symbol, and there is a real definition, the
1841 processor independent code will have arranged for us to see the
1842 real definition first, and we can just use the same value. */
f6e332e6 1843 if (h->u.weakdef != NULL)
6edf0760 1844 {
f6e332e6
AM		 1845 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1846 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1847 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1848 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6edf0760
NC		 1849 return TRUE;
1850 }
41978308 1851
6edf0760
NC		 1852 /* This is a reference to a symbol defined by a dynamic object which
1853 is not a function. */
41978308 1854
6edf0760
NC		 1855 /* If we are creating a shared library, we must presume that the
1856 only references to the symbol are via the global offset table.
1857 For such cases we need not do anything here; the relocations will
1858 be handled correctly by relocate_section. */
1859 if (info->shared)
1860 return TRUE;
41978308 1861
6edf0760
NC		 1862 /* If there are no references to this symbol that do not use the
1863 GOT, we don't need to generate a copy reloc. */
f5385ebf 1864 if (!h->non_got_ref)
6edf0760
NC		 1865 return TRUE;
1866
1867 /* If -z nocopyreloc was given, we won't generate them either. */
1868 if (info->nocopyreloc)
1869 {
f5385ebf 1870 h->non_got_ref = 0;
6edf0760
NC		 1871 return TRUE;
1872 }
1873
1874 eh = (struct elf_m32r_link_hash_entry *) h;
1875 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1876 {
1877 s = p->sec->output_section;
1878 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1879 break;
1880 }
1881
1882 /* If we didn't find any dynamic relocs in sections which needs the
1883 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1884 the copy reloc. */
1885 if (p == NULL)
1886 {
f5385ebf 1887 h->non_got_ref = 0;
6edf0760
NC		 1888 return TRUE;
1889 }
1890
1891 /* We must allocate the symbol in our .dynbss section, which will
1892 become part of the .bss section of the executable. There will be
1893 an entry for this symbol in the .dynsym section. The dynamic
1894 object will contain position independent code, so all references
1895 from the dynamic object to this symbol will go through the global
1896 offset table. The dynamic linker will use the .dynsym entry to
1897 determine the address it must put in the global offset table, so
1898 both the dynamic object and the regular object will refer to the
1899 same memory location for the variable. */
41978308 1900
6edf0760 1901 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 1902 if (htab == NULL)
1903 return FALSE;
1904
6edf0760
NC		 1905 s = htab->sdynbss;
1906 BFD_ASSERT (s != NULL);
41978308 1907
6edf0760
NC		 1908 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1909 to copy the initial value out of the dynamic object and into the
1910 runtime process image. We need to remember the offset into the
1911 .rela.bss section we are going to use. */
1d7e9d18 1912 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6edf0760
NC		 1913 {
1914 asection *srel;
41978308 1915
6edf0760
NC		 1916 srel = htab->srelbss;
1917 BFD_ASSERT (srel != NULL);
eea6121a 1918 srel->size += sizeof (Elf32_External_Rela);
f5385ebf 1919 h->needs_copy = 1;
6edf0760 1920 }
41978308 1921
027297b7 1922 return _bfd_elf_adjust_dynamic_copy (h, s);
6edf0760
NC		 1923}
1924
6edf0760
NC		 1925/* Allocate space in .plt, .got and associated reloc sections for
1926 dynamic relocs. */
41978308 1927
6edf0760 1928static bfd_boolean
47b0e7ad 1929allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
6edf0760
NC		 1930{
1931 struct bfd_link_info *info;
1932 struct elf_m32r_link_hash_table *htab;
1933 struct elf_m32r_link_hash_entry *eh;
1934 struct elf_m32r_dyn_relocs *p;
41978308 1935
6edf0760
NC		 1936 if (h->root.type == bfd_link_hash_indirect)
1937 return TRUE;
41978308 1938
6edf0760
NC		 1939 info = (struct bfd_link_info *) inf;
1940 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 1941 if (htab == NULL)
1942 return FALSE;
41978308 1943
6edf0760 1944 eh = (struct elf_m32r_link_hash_entry *) h;
41978308 1945
6edf0760
NC		 1946 if (htab->root.dynamic_sections_created
1947 && h->plt.refcount > 0)
1948 {
1949 /* Make sure this symbol is output as a dynamic symbol.
1950 Undefined weak syms won't yet be marked as dynamic. */
1951 if (h->dynindx == -1
f5385ebf 1952 && !h->forced_local)
6edf0760 1953 {
c152c796 1954 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC		 1955 return FALSE;
1956 }
41978308 1957
c152c796 1958 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
6edf0760
NC		 1959 {
1960 asection *s = htab->splt;
41978308 1961
6edf0760
NC		 1962 /* If this is the first .plt entry, make room for the special
1963 first entry. */
eea6121a
AM		 1964 if (s->size == 0)
1965 s->size += PLT_ENTRY_SIZE;
41978308 1966
eea6121a 1967 h->plt.offset = s->size;
41978308 1968
6edf0760
NC		 1969 /* If this symbol is not defined in a regular file, and we are
1970 not generating a shared library, then set the symbol to this
1971 location in the .plt. This is required to make function
1972 pointers compare as equal between the normal executable and
1973 the shared library. */
1974 if (! info->shared
f5385ebf 1975 && !h->def_regular)
6edf0760
NC		 1976 {
1977 h->root.u.def.section = s;
1978 h->root.u.def.value = h->plt.offset;
1979 }
41978308 1980
6edf0760 1981 /* Make room for this entry. */
eea6121a 1982 s->size += PLT_ENTRY_SIZE;
41978308 1983
6edf0760
NC		 1984 /* We also need to make an entry in the .got.plt section, which
1985 will be placed in the .got section by the linker script. */
eea6121a 1986 htab->sgotplt->size += 4;
41978308 1987
6edf0760 1988 /* We also need to make an entry in the .rel.plt section. */
eea6121a 1989 htab->srelplt->size += sizeof (Elf32_External_Rela);
6edf0760
NC		 1990 }
1991 else
1992 {
1993 h->plt.offset = (bfd_vma) -1;
f5385ebf 1994 h->needs_plt = 0;
6edf0760
NC		 1995 }
1996 }
1997 else
1998 {
1999 h->plt.offset = (bfd_vma) -1;
f5385ebf 2000 h->needs_plt = 0;
6edf0760 2001 }
41978308 2002
6edf0760
NC		 2003 if (h->got.refcount > 0)
2004 {
2005 asection *s;
2006 bfd_boolean dyn;
41978308 2007
6edf0760
NC		 2008 /* Make sure this symbol is output as a dynamic symbol.
2009 Undefined weak syms won't yet be marked as dynamic. */
2010 if (h->dynindx == -1
f5385ebf 2011 && !h->forced_local)
6edf0760 2012 {
c152c796 2013 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC		 2014 return FALSE;
2015 }
41978308 2016
6edf0760
NC		 2017 s = htab->sgot;
2018
eea6121a
AM		 2019 h->got.offset = s->size;
2020 s->size += 4;
6edf0760 2021 dyn = htab->root.dynamic_sections_created;
c152c796 2022 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
eea6121a 2023 htab->srelgot->size += sizeof (Elf32_External_Rela);
6edf0760
NC		 2024 }
2025 else
2026 h->got.offset = (bfd_vma) -1;
41978308 2027
6edf0760
NC		 2028 if (eh->dyn_relocs == NULL)
2029 return TRUE;
41978308 2030
6edf0760
NC		 2031 /* In the shared -Bsymbolic case, discard space allocated for
2032 dynamic pc-relative relocs against symbols which turn out to be
2033 defined in regular objects. For the normal shared case, discard
2034 space for pc-relative relocs that have become local due to symbol
2035 visibility changes. */
2036
2037 if (info->shared)
2038 {
f5385ebf
AM		 2039 if (h->def_regular
2040 && (h->forced_local
6edf0760
NC		 2041 || info->symbolic))
2042 {
2043 struct elf_m32r_dyn_relocs **pp;
47b0e7ad
NC		 2044
2045 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
6edf0760
NC		 2046 {
2047 p->count -= p->pc_count;
2048 p->pc_count = 0;
2049 if (p->count == 0)
2050 *pp = p->next;
2051 else
2052 pp = &p->next;
2053 }
2054 }
22d606e9
AM		 2055
2056 /* Also discard relocs on undefined weak syms with non-default
2057 visibility. */
2058 if (eh->dyn_relocs != NULL
2059 && h->root.type == bfd_link_hash_undefweak)
2060 {
2061 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2062 eh->dyn_relocs = NULL;
2063
2064 /* Make sure undefined weak symbols are output as a dynamic
2065 symbol in PIEs. */
2066 else if (h->dynindx == -1
2067 && !h->forced_local)
2068 {
2069 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2070 return FALSE;
2071 }
2072 }
6edf0760
NC		 2073 }
2074 else
2075 {
2076 /* For the non-shared case, discard space for relocs against
2077 symbols which turn out to need copy relocs or are not
2078 dynamic. */
41978308 2079
f5385ebf
AM		 2080 if (!h->non_got_ref
2081 && ((h->def_dynamic
2082 && !h->def_regular)
6edf0760
NC		 2083 || (htab->root.dynamic_sections_created
2084 && (h->root.type == bfd_link_hash_undefweak
2085 || h->root.type == bfd_link_hash_undefined))))
2086 {
2087 /* Make sure this symbol is output as a dynamic symbol.
2088 Undefined weak syms won't yet be marked as dynamic. */
2089 if (h->dynindx == -1
f5385ebf 2090 && !h->forced_local)
6edf0760 2091 {
c152c796 2092 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6edf0760
NC		 2093 return FALSE;
2094 }
41978308 2095
6edf0760
NC		 2096 /* If that succeeded, we know we'll be keeping all the
2097 relocs. */
2098 if (h->dynindx != -1)
2099 goto keep;
2100 }
41978308 2101
6edf0760 2102 eh->dyn_relocs = NULL;
41978308 2103
6edf0760
NC		 2104 keep: ;
2105 }
41978308 2106
6edf0760
NC		 2107 /* Finally, allocate space. */
2108 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2109 {
2110 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 2111 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6edf0760 2112 }
41978308 2113
6edf0760
NC		 2114 return TRUE;
2115}
47b0e7ad 2116
6edf0760 2117/* Find any dynamic relocs that apply to read-only sections. */
41978308 2118
6edf0760 2119static bfd_boolean
47b0e7ad 2120readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
6edf0760
NC		 2121{
2122 struct elf_m32r_link_hash_entry *eh;
2123 struct elf_m32r_dyn_relocs *p;
2124
6edf0760
NC		 2125 eh = (struct elf_m32r_link_hash_entry *) h;
2126 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2127 {
2128 asection *s = p->sec->output_section;
252b5132 2129
6edf0760
NC		 2130 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2131 {
2132 struct bfd_link_info *info = (struct bfd_link_info *) inf;
252b5132 2133
6edf0760 2134 info->flags |= DF_TEXTREL;
252b5132 2135
6edf0760
NC		 2136 /* Not an error, just cut short the traversal. */
2137 return FALSE;
2138 }
252b5132 2139 }
6edf0760
NC		 2140 return TRUE;
2141}
252b5132 2142
6edf0760 2143/* Set the sizes of the dynamic sections. */
41978308 2144
6edf0760 2145static bfd_boolean
47b0e7ad
NC		 2146m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2147 struct bfd_link_info *info)
6edf0760
NC		 2148{
2149 struct elf_m32r_link_hash_table *htab;
2150 bfd *dynobj;
2151 asection *s;
2152 bfd_boolean relocs;
2153 bfd *ibfd;
2154
2155#ifdef DEBUG_PIC
47b0e7ad 2156 printf ("m32r_elf_size_dynamic_sections()\n");
6edf0760
NC		 2157#endif
2158
2159 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 2160 if (htab == NULL)
2161 return FALSE;
2162
6edf0760
NC		 2163 dynobj = htab->root.dynobj;
2164 BFD_ASSERT (dynobj != NULL);
2165
2166 if (htab->root.dynamic_sections_created)
252b5132 2167 {
6edf0760 2168 /* Set the contents of the .interp section to the interpreter. */
80447b21 2169 if (info->executable)
6edf0760 2170 {
3d4d4302 2171 s = bfd_get_linker_section (dynobj, ".interp");
6edf0760 2172 BFD_ASSERT (s != NULL);
eea6121a 2173 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6edf0760
NC		 2174 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2175 }
252b5132
RH		 2176 }
2177
6edf0760
NC		 2178 /* Set up .got offsets for local syms, and space for local dynamic
2179 relocs. */
c72f2fb2 2180 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6edf0760
NC		 2181 {
2182 bfd_signed_vma *local_got;
2183 bfd_signed_vma *end_local_got;
2184 bfd_size_type locsymcount;
2185 Elf_Internal_Shdr *symtab_hdr;
2186 asection *srel;
252b5132 2187
6edf0760
NC		 2188 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2189 continue;
252b5132 2190
6edf0760
NC		 2191 for (s = ibfd->sections; s != NULL; s = s->next)
2192 {
2193 struct elf_m32r_dyn_relocs *p;
2194
2195 for (p = ((struct elf_m32r_dyn_relocs *)
2196 elf_section_data (s)->local_dynrel);
2197 p != NULL;
2198 p = p->next)
2199 {
2200 if (! bfd_is_abs_section (p->sec)
2201 && bfd_is_abs_section (p->sec->output_section))
2202 {
2203 /* Input section has been discarded, either because
2204 it is a copy of a linkonce section or due to
2205 linker script /DISCARD/, so we'll be discarding
2206 the relocs too. */
2207 }
2208 else if (p->count != 0)
2209 {
2210 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2211 srel->size += p->count * sizeof (Elf32_External_Rela);
6edf0760
NC		 2212 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2213 info->flags |= DF_TEXTREL;
2214 }
2215 }
2216 }
2217
2218 local_got = elf_local_got_refcounts (ibfd);
2219 if (!local_got)
2220 continue;
2221
2222 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2223 locsymcount = symtab_hdr->sh_info;
2224 end_local_got = local_got + locsymcount;
2225 s = htab->sgot;
2226 srel = htab->srelgot;
2227 for (; local_got < end_local_got; ++local_got)
2228 {
2229 if (*local_got > 0)
2230 {
eea6121a
AM		 2231 *local_got = s->size;
2232 s->size += 4;
6edf0760 2233 if (info->shared)
eea6121a 2234 srel->size += sizeof (Elf32_External_Rela);
6edf0760
NC		 2235 }
2236 else
2237 *local_got = (bfd_vma) -1;
2238 }
2239 }
2240
2241 /* Allocate global sym .plt and .got entries, and space for global
2242 sym dynamic relocs. */
47b0e7ad 2243 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
6edf0760
NC		 2244
2245 /* We now have determined the sizes of the various dynamic sections.
2246 Allocate memory for them. */
2247 relocs = FALSE;
2248 for (s = dynobj->sections; s != NULL; s = s->next)
252b5132 2249 {
6edf0760
NC		 2250 if ((s->flags & SEC_LINKER_CREATED) == 0)
2251 continue;
252b5132 2252
6edf0760
NC		 2253 if (s == htab->splt
2254 || s == htab->sgot
c456f082
AM		 2255 || s == htab->sgotplt
2256 || s == htab->sdynbss)
6edf0760
NC		 2257 {
2258 /* Strip this section if we don't need it; see the
2259 comment below. */
2260 }
0112cd26 2261 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
6edf0760 2262 {
eea6121a 2263 if (s->size != 0 && s != htab->srelplt)
6edf0760
NC		 2264 relocs = TRUE;
2265
2266 /* We use the reloc_count field as a counter if we need
2267 to copy relocs into the output file. */
2268 s->reloc_count = 0;
2269 }
252b5132 2270 else
47b0e7ad
NC		 2271 /* It's not one of our sections, so don't allocate space. */
2272 continue;
6edf0760 2273
eea6121a 2274 if (s->size == 0)
6edf0760
NC		 2275 {
2276 /* If we don't need this section, strip it from the
2277 output file. This is mostly to handle .rela.bss and
2278 .rela.plt. We must create both sections in
2279 create_dynamic_sections, because they must be created
2280 before the linker maps input sections to output
2281 sections. The linker does that before
2282 adjust_dynamic_symbol is called, and it is that
2283 function which decides whether anything needs to go
2284 into these sections. */
8423293d 2285 s->flags |= SEC_EXCLUDE;
6edf0760
NC		 2286 continue;
2287 }
2288
c456f082
AM		 2289 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2290 continue;
2291
6edf0760
NC		 2292 /* Allocate memory for the section contents. We use bfd_zalloc
2293 here in case unused entries are not reclaimed before the
2294 section's contents are written out. This should not happen,
2295 but this way if it does, we get a R_M32R_NONE reloc instead
2296 of garbage. */
47b0e7ad 2297 s->contents = bfd_zalloc (dynobj, s->size);
6edf0760
NC		 2298 if (s->contents == NULL)
2299 return FALSE;
2300 }
2301
2302 if (htab->root.dynamic_sections_created)
2303 {
2304 /* Add some entries to the .dynamic section. We fill in the
2305 values later, in m32r_elf_finish_dynamic_sections, but we
2306 must add the entries now so that we get the correct size for
2307 the .dynamic section. The DT_DEBUG entry is filled in by the
2308 dynamic linker and used by the debugger. */
2309#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2310 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6edf0760 2311
80447b21 2312 if (info->executable)
252b5132 2313 {
6edf0760
NC		 2314 if (! add_dynamic_entry (DT_DEBUG, 0))
2315 return FALSE;
252b5132 2316 }
6edf0760 2317
eea6121a 2318 if (htab->splt->size != 0)
6edf0760
NC		 2319 {
2320 if (! add_dynamic_entry (DT_PLTGOT, 0)
2321 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2322 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2323 || ! add_dynamic_entry (DT_JMPREL, 0))
2324 return FALSE;
2325 }
2326
2327 if (relocs)
2328 {
2329 if (! add_dynamic_entry (DT_RELA, 0)
2330 || ! add_dynamic_entry (DT_RELASZ, 0)
2331 || ! add_dynamic_entry (DT_RELAENT,
2332 sizeof (Elf32_External_Rela)))
2333 return FALSE;
2334
2335 /* If any dynamic relocs apply to a read-only section,
2336 then we need a DT_TEXTREL entry. */
2337 if ((info->flags & DF_TEXTREL) == 0)
2338 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
47b0e7ad 2339 info);
6edf0760
NC		 2340
2341 if ((info->flags & DF_TEXTREL) != 0)
2342 {
2343 if (! add_dynamic_entry (DT_TEXTREL, 0))
2344 return FALSE;
2345 }
2346 }
252b5132 2347 }
6edf0760
NC		 2348#undef add_dynamic_entry
2349
2350 return TRUE;
252b5132 2351}
47b0e7ad 2352
252b5132
RH		 2353/* Relocate an M32R/D ELF section.
2354 There is some attempt to make this function usable for many architectures,
f0fe0e16 2355 both for RELA and REL type relocs, if only to serve as a learning tool.
252b5132
RH		 2356
2357 The RELOCATE_SECTION function is called by the new ELF backend linker
2358 to handle the relocations for a section.
2359
2360 The relocs are always passed as Rela structures; if the section
2361 actually uses Rel structures, the r_addend field will always be
2362 zero.
2363
2364 This function is responsible for adjust the section contents as
2365 necessary, and (if using Rela relocs and generating a
1049f94e 2366 relocatable output file) adjusting the reloc addend as
252b5132
RH		 2367 necessary.
2368
2369 This function does not have to worry about setting the reloc
2370 address or the reloc symbol index.
2371
2372 LOCAL_SYMS is a pointer to the swapped in local symbols.
2373
2374 LOCAL_SECTIONS is an array giving the section in the input file
2375 corresponding to the st_shndx field of each local symbol.
2376
2377 The global hash table entry for the global symbols can be found
2378 via elf_sym_hashes (input_bfd).
2379
1049f94e 2380 When generating relocatable output, this function must handle
252b5132
RH		 2381 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2382 going to be the section symbol corresponding to the output
2383 section, which means that the addend must be adjusted
2384 accordingly. */
2385
b34976b6 2386static bfd_boolean
47b0e7ad
NC		 2387m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2388 struct bfd_link_info *info,
2389 bfd *input_bfd,
2390 asection *input_section,
2391 bfd_byte *contents,
2392 Elf_Internal_Rela *relocs,
2393 Elf_Internal_Sym *local_syms,
2394 asection **local_sections)
252b5132
RH		 2395{
2396 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2397 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2398 Elf_Internal_Rela *rel, *relend;
2399 /* Assume success. */
b34976b6 2400 bfd_boolean ret = TRUE;
6edf0760
NC		 2401 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2402 bfd *dynobj;
2403 bfd_vma *local_got_offsets;
2404 asection *sgot, *splt, *sreloc;
07515404 2405 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
6edf0760 2406
4dfe6ac6
NC		 2407 if (htab == NULL)
2408 return FALSE;
2409
6edf0760
NC		 2410 dynobj = htab->root.dynobj;
2411 local_got_offsets = elf_local_got_offsets (input_bfd);
41978308 2412
6edf0760
NC		 2413 sgot = htab->sgot;
2414 splt = htab->splt;
2415 sreloc = NULL;
b491616a 2416
252b5132
RH		 2417 rel = relocs;
2418 relend = relocs + input_section->reloc_count;
2419 for (; rel < relend; rel++)
2420 {
2421 int r_type;
2422 reloc_howto_type *howto;
2423 unsigned long r_symndx;
6edf0760 2424 struct elf_link_hash_entry *h;
252b5132 2425 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
6edf0760
NC		 2426 ensure it's zero (we use REL relocs, not RELA). Therefore this
2427 should be assigning zero to `addend', but for clarity we use
2428 `r_addend'. */
252b5132
RH		 2429 bfd_vma addend = rel->r_addend;
2430 bfd_vma offset = rel->r_offset;
ab96bf03 2431 bfd_vma relocation;
252b5132
RH		 2432 Elf_Internal_Sym *sym;
2433 asection *sec;
2434 const char *sym_name;
2435 bfd_reloc_status_type r;
2436 const char *errmsg = NULL;
6edf0760 2437 bfd_boolean use_rel = FALSE;
252b5132
RH		 2438
2439 h = NULL;
2440 r_type = ELF32_R_TYPE (rel->r_info);
2441 if (r_type < 0 || r_type >= (int) R_M32R_max)
2442 {
d003868e
AM		 2443 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2444 input_bfd,
252b5132
RH		 2445 (int) r_type);
2446 bfd_set_error (bfd_error_bad_value);
b34976b6 2447 ret = FALSE;
252b5132
RH		 2448 continue;
2449 }
2450
47b0e7ad 2451 if ( r_type == R_M32R_GNU_VTENTRY
6edf0760
NC		 2452 || r_type == R_M32R_GNU_VTINHERIT
2453 || r_type == R_M32R_NONE
2454 || r_type == R_M32R_RELA_GNU_VTENTRY
2455 || r_type == R_M32R_RELA_GNU_VTINHERIT)
252b5132
RH		 2456 continue;
2457
6edf0760
NC		 2458 if (r_type <= R_M32R_GNU_VTENTRY)
2459 use_rel = TRUE;
2460
252b5132
RH		 2461 howto = m32r_elf_howto_table + r_type;
2462 r_symndx = ELF32_R_SYM (rel->r_info);
2463
ab96bf03
AM		 2464 sym = NULL;
2465 sec = NULL;
2466 h = NULL;
2467
2468 if (r_symndx < symtab_hdr->sh_info)
2469 {
2470 /* Local symbol. */
2471 sym = local_syms + r_symndx;
2472 sec = local_sections[r_symndx];
2473 sym_name = "<local symbol>";
2474
2475 if (!use_rel)
2476 {
2477 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2478 addend = rel->r_addend;
2479 }
2480 else
2481 {
2482 relocation = (sec->output_section->vma
2483 + sec->output_offset
2484 + sym->st_value);
2485 }
2486 }
2487 else
2488 {
2489 /* External symbol. */
2490 relocation = 0;
2491
2492 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8a5da09b
AM		 2493
2494 if (info->wrap_hash != NULL
2495 && (input_section->flags & SEC_DEBUGGING) != 0)
2496 h = ((struct elf_link_hash_entry *)
2497 unwrap_hash_lookup (info, input_bfd, &h->root));
2498
ab96bf03
AM		 2499 while (h->root.type == bfd_link_hash_indirect
2500 || h->root.type == bfd_link_hash_warning)
2501 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2502 sym_name = h->root.root.string;
2503
2504 if (h->root.type == bfd_link_hash_defined
2505 || h->root.type == bfd_link_hash_defweak)
2506 {
2507 bfd_boolean dyn;
2508 sec = h->root.u.def.section;
2509
2510 dyn = htab->root.dynamic_sections_created;
2511 sec = h->root.u.def.section;
2512 if (r_type == R_M32R_GOTPC24
2513 || (r_type == R_M32R_GOTPC_HI_ULO
2514 || r_type == R_M32R_GOTPC_HI_SLO
2515 || r_type == R_M32R_GOTPC_LO)
2516 || (r_type == R_M32R_26_PLTREL
2517 && h->plt.offset != (bfd_vma) -1)
2518 || ((r_type == R_M32R_GOT24
2519 || r_type == R_M32R_GOT16_HI_ULO
2520 || r_type == R_M32R_GOT16_HI_SLO
2521 || r_type == R_M32R_GOT16_LO)
2522 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2523 info->shared, h)
2524 && (! info->shared
2525 || (! info->symbolic && h->dynindx != -1)
2526 || !h->def_regular))
2527 || (info->shared
2528 && ((! info->symbolic && h->dynindx != -1)
2529 || !h->def_regular)
2530 && (((r_type == R_M32R_16_RELA
2531 || r_type == R_M32R_32_RELA
2532 || r_type == R_M32R_24_RELA
2533 || r_type == R_M32R_HI16_ULO_RELA
2534 || r_type == R_M32R_HI16_SLO_RELA
2535 || r_type == R_M32R_LO16_RELA)
2536 && !h->forced_local)
2537 || r_type == R_M32R_REL32
2538 || r_type == R_M32R_10_PCREL_RELA
2539 || r_type == R_M32R_18_PCREL_RELA
2540 || r_type == R_M32R_26_PCREL_RELA)
2541 && ((input_section->flags & SEC_ALLOC) != 0
2542 /* DWARF will emit R_M32R_16(24,32) relocations
2543 in its sections against symbols defined
2544 externally in shared libraries. We can't do
2545 anything with them here. */
2546 || ((input_section->flags & SEC_DEBUGGING) != 0
2547 && h->def_dynamic))))
2548 {
2549 /* In these cases, we don't need the relocation
2550 value. We check specially because in some
2551 obscure cases sec->output_section will be NULL. */
2552 }
2553 else if (sec->output_section != NULL)
2554 relocation = (h->root.u.def.value
2555 + sec->output_section->vma
2556 + sec->output_offset);
1d5316ab
AM		 2557 else if (!info->relocatable
2558 && (_bfd_elf_section_offset (output_bfd, info,
2559 input_section,
2560 rel->r_offset)
2561 != (bfd_vma) -1))
ab96bf03
AM		 2562 {
2563 (*_bfd_error_handler)
2564 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2565 input_bfd,
2566 input_section,
2567 (long) rel->r_offset,
2568 howto->name,
2569 h->root.root.string);
2570 }
2571 }
2572 else if (h->root.type == bfd_link_hash_undefweak)
2573 ;
2574 else if (info->unresolved_syms_in_objects == RM_IGNORE
2575 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2576 ;
2577 else if (!info->relocatable)
2578 {
2579 if (! ((*info->callbacks->undefined_symbol)
2580 (info, h->root.root.string, input_bfd,
2581 input_section, offset,
2582 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2583 || ELF_ST_VISIBILITY (h->other)))))
2584 return FALSE;
2585 }
2586 }
2587
dbaa2011 2588 if (sec != NULL && discarded_section (sec))
e4067dbb 2589 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 2590 rel, 1, relend, howto, 0, contents);
ab96bf03
AM		 2591
2592 if (info->relocatable && !use_rel)
252b5132 2593 {
1049f94e 2594 /* This is a relocatable link. We don't have to change
252b5132
RH		 2595 anything, unless the reloc is against a section symbol,
2596 in which case we have to adjust according to where the
2597 section symbol winds up in the output section. */
ab96bf03
AM		 2598 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2599 rel->r_addend += sec->output_offset;
2600 continue;
2601 }
252b5132 2602
ab96bf03
AM		 2603 if (info->relocatable && use_rel)
2604 {
2605 /* This is a relocatable link. We don't have to change
2606 anything, unless the reloc is against a section symbol,
2607 in which case we have to adjust according to where the
2608 section symbol winds up in the output section. */
2609 if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
47b0e7ad 2610 continue;
252b5132 2611
ab96bf03 2612 addend += sec->output_offset;
252b5132 2613
252b5132
RH		 2614 /* If partial_inplace, we need to store any additional addend
2615 back in the section. */
2616 if (! howto->partial_inplace)
2617 continue;
2618 /* ??? Here is a nice place to call a special_function
2619 like handler. */
2620 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2621 r = _bfd_relocate_contents (howto, input_bfd,
2622 addend, contents + offset);
2623 else
2624 {
2625 Elf_Internal_Rela *lorel;
2626
2627 /* We allow an arbitrary number of HI16 relocs before the
2628 LO16 reloc. This permits gcc to emit the HI and LO relocs
2629 itself. */
2630 for (lorel = rel + 1;
2631 (lorel < relend
2632 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2633 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2634 lorel++)
2635 continue;
2636 if (lorel < relend
2637 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2638 {
2639 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2640 contents, addend);
2641 r = bfd_reloc_ok;
2642 }
2643 else
2644 r = _bfd_relocate_contents (howto, input_bfd,
2645 addend, contents + offset);
2646 }
252b5132
RH		 2647 }
2648 else
2649 {
252b5132 2650 /* Sanity check the address. */
07515404 2651 if (offset > high_address)
252b5132
RH		 2652 {
2653 r = bfd_reloc_outofrange;
2654 goto check_reloc;
2655 }
2656
2657 switch ((int) r_type)
2658 {
097f809a
NC		 2659 case R_M32R_GOTOFF:
2660 /* Relocation is relative to the start of the global offset
2661 table (for ld24 rx, #uimm24). eg access at label+addend
f12123c0 2662
097f809a
NC		 2663 ld24 rx. #label@GOTOFF + addend
2664 sub rx, r12. */
2665
2666 BFD_ASSERT (sgot != NULL);
2667
2668 relocation = -(relocation - sgot->output_section->vma);
2669 rel->r_addend = -rel->r_addend;
2670 break;
2671
2672 case R_M32R_GOTOFF_HI_ULO:
2673 case R_M32R_GOTOFF_HI_SLO:
2674 case R_M32R_GOTOFF_LO:
2675 BFD_ASSERT (sgot != NULL);
2676
2677 relocation -= sgot->output_section->vma;
2678
2679 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2680 && ((relocation + rel->r_addend) & 0x8000))
2681 rel->r_addend += 0x10000;
2682 break;
2683
6edf0760
NC		 2684 case R_M32R_GOTPC24:
2685 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2686 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2687 */
2688 relocation = sgot->output_section->vma;
2689 break;
2690
2691 case R_M32R_GOTPC_HI_ULO:
2692 case R_M32R_GOTPC_HI_SLO:
41978308 2693 case R_M32R_GOTPC_LO:
6edf0760
NC		 2694 {
2695 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2696 bl .+4
2697 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2698 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2699 or
2700 bl .+4
2701 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2702 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2703 */
2704 relocation = sgot->output_section->vma;
2705 relocation -= (input_section->output_section->vma
2706 + input_section->output_offset
2707 + rel->r_offset);
41978308 2708 if ((r_type == R_M32R_GOTPC_HI_SLO)
6edf0760
NC		 2709 && ((relocation + rel->r_addend) & 0x8000))
2710 rel->r_addend += 0x10000;
2711
2712 break;
2713 }
2714 case R_M32R_GOT16_HI_ULO:
2715 case R_M32R_GOT16_HI_SLO:
41978308 2716 case R_M32R_GOT16_LO:
6edf0760
NC		 2717 /* Fall through. */
2718 case R_M32R_GOT24:
2719 /* Relocation is to the entry for this symbol in the global
2720 offset table. */
2721 BFD_ASSERT (sgot != NULL);
41978308 2722
6edf0760
NC		 2723 if (h != NULL)
2724 {
2725 bfd_boolean dyn;
2726 bfd_vma off;
41978308 2727
6edf0760
NC		 2728 off = h->got.offset;
2729 BFD_ASSERT (off != (bfd_vma) -1);
2730
2731 dyn = htab->root.dynamic_sections_created;
c152c796 2732 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6edf0760
NC		 2733 || (info->shared
2734 && (info->symbolic
2735 || h->dynindx == -1
f5385ebf
AM		 2736 || h->forced_local)
2737 && h->def_regular))
6edf0760
NC		 2738 {
2739 /* This is actually a static link, or it is a
2740 -Bsymbolic link and the symbol is defined
2741 locally, or the symbol was forced to be local
2742 because of a version file. We must initialize
2743 this entry in the global offset table. Since the
2744 offset must always be a multiple of 4, we use the
2745 least significant bit to record whether we have
2746 initialized it already.
41978308 2747
6edf0760
NC		 2748 When doing a dynamic link, we create a .rela.got
2749 relocation entry to initialize the value. This
2750 is done in the finish_dynamic_symbol routine. */
2751 if ((off & 1) != 0)
2752 off &= ~1;
2753 else
2754 {
2755 bfd_put_32 (output_bfd, relocation,
2756 sgot->contents + off);
2757 h->got.offset |= 1;
2758 }
2759 }
41978308 2760
6edf0760
NC		 2761 relocation = sgot->output_offset + off;
2762 }
2763 else
2764 {
2765 bfd_vma off;
2766 bfd_byte *loc;
41978308 2767
6edf0760
NC		 2768 BFD_ASSERT (local_got_offsets != NULL
2769 && local_got_offsets[r_symndx] != (bfd_vma) -1);
41978308 2770
6edf0760 2771 off = local_got_offsets[r_symndx];
41978308 2772
6edf0760
NC		 2773 /* The offset must always be a multiple of 4. We use
2774 the least significant bit to record whether we have
2775 already processed this entry. */
2776 if ((off & 1) != 0)
2777 off &= ~1;
2778 else
2779 {
2780 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
41978308 2781
6edf0760
NC		 2782 if (info->shared)
2783 {
2784 asection *srelgot;
2785 Elf_Internal_Rela outrel;
41978308 2786
6edf0760
NC		 2787 /* We need to generate a R_M32R_RELATIVE reloc
2788 for the dynamic linker. */
3d4d4302
AM		 2789 srelgot = bfd_get_linker_section (dynobj,
2790 ".rela.got");
6edf0760 2791 BFD_ASSERT (srelgot != NULL);
41978308 2792
6edf0760
NC		 2793 outrel.r_offset = (sgot->output_section->vma
2794 + sgot->output_offset
2795 + off);
2796 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2797 outrel.r_addend = relocation;
2798 loc = srelgot->contents;
47b0e7ad 2799 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC		 2800 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2801 ++srelgot->reloc_count;
2802 }
41978308 2803
6edf0760
NC		 2804 local_got_offsets[r_symndx] |= 1;
2805 }
41978308 2806
6edf0760
NC		 2807 relocation = sgot->output_offset + off;
2808 }
2809 if ((r_type == R_M32R_GOT16_HI_SLO)
2810 && ((relocation + rel->r_addend) & 0x8000))
2811 rel->r_addend += 0x10000;
2812
2813 break;
41978308 2814
6edf0760
NC		 2815 case R_M32R_26_PLTREL:
2816 /* Relocation is to the entry for this symbol in the
2817 procedure linkage table. */
41978308 2818
6edf0760
NC		 2819 /* The native assembler will generate a 26_PLTREL reloc
2820 for a local symbol if you assemble a call from one
2821 section to another when using -K pic. */
2822 if (h == NULL)
2823 break;
2824
f5385ebf 2825 if (h->forced_local)
6edf0760
NC		 2826 break;
2827
2828 if (h->plt.offset == (bfd_vma) -1)
47b0e7ad
NC		 2829 /* We didn't make a PLT entry for this symbol. This
2830 happens when statically linking PIC code, or when
2831 using -Bsymbolic. */
2832 break;
41978308 2833
6edf0760
NC		 2834 relocation = (splt->output_section->vma
2835 + splt->output_offset
2836 + h->plt.offset);
2837 break;
41978308 2838
6edf0760 2839 case R_M32R_HI16_SLO_RELA:
47b0e7ad
NC		 2840 if ((relocation + rel->r_addend) & 0x8000)
2841 rel->r_addend += 0x10000;
6edf0760 2842 /* Fall through. */
47b0e7ad 2843
6edf0760
NC		 2844 case R_M32R_16_RELA:
2845 case R_M32R_24_RELA:
2846 case R_M32R_32_RELA:
157e7bd1 2847 case R_M32R_REL32:
8ce757c4 2848 case R_M32R_10_PCREL_RELA:
6edf0760
NC		 2849 case R_M32R_18_PCREL_RELA:
2850 case R_M32R_26_PCREL_RELA:
2851 case R_M32R_HI16_ULO_RELA:
2852 case R_M32R_LO16_RELA:
6edf0760 2853 if (info->shared
cf35638d 2854 && r_symndx != STN_UNDEF
6edf0760 2855 && (input_section->flags & SEC_ALLOC) != 0
8ce757c4
NC		 2856 && (( r_type != R_M32R_10_PCREL_RELA
2857 && r_type != R_M32R_18_PCREL_RELA
157e7bd1
NC		 2858 && r_type != R_M32R_26_PCREL_RELA
2859 && r_type != R_M32R_REL32)
6edf0760
NC		 2860 || (h != NULL
2861 && h->dynindx != -1
2862 && (! info->symbolic
f5385ebf 2863 || !h->def_regular))))
6edf0760
NC		 2864 {
2865 Elf_Internal_Rela outrel;
2866 bfd_boolean skip, relocate;
2867 bfd_byte *loc;
41978308 2868
6edf0760
NC		 2869 /* When generating a shared object, these relocations
2870 are copied into the output file to be resolved at run
2871 time. */
6edf0760
NC		 2872 if (sreloc == NULL)
2873 {
83bac4b0
NC		 2874 sreloc = _bfd_elf_get_dynamic_reloc_section
2875 (input_bfd, input_section, /*rela?*/ TRUE);
2876 if (sreloc == NULL)
2877 return FALSE;
6edf0760 2878 }
41978308 2879
6edf0760
NC		 2880 skip = FALSE;
2881 relocate = FALSE;
41978308 2882
6edf0760
NC		 2883 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2884 info,
2885 input_section,
2886 rel->r_offset);
2887 if (outrel.r_offset == (bfd_vma) -1)
2888 skip = TRUE;
2889 else if (outrel.r_offset == (bfd_vma) -2)
47b0e7ad 2890 skip = relocate = TRUE;
6edf0760
NC		 2891 outrel.r_offset += (input_section->output_section->vma
2892 + input_section->output_offset);
41978308 2893
6edf0760
NC		 2894 if (skip)
2895 memset (&outrel, 0, sizeof outrel);
8ce757c4
NC		 2896 else if ( r_type == R_M32R_10_PCREL_RELA
2897 || r_type == R_M32R_18_PCREL_RELA
157e7bd1
NC		 2898 || r_type == R_M32R_26_PCREL_RELA
2899 || r_type == R_M32R_REL32)
6edf0760
NC		 2900 {
2901 BFD_ASSERT (h != NULL && h->dynindx != -1);
2902 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2903 outrel.r_addend = rel->r_addend;
2904 }
2905 else
2906 {
2907 /* h->dynindx may be -1 if this symbol was marked to
2908 become local. */
2909 if (h == NULL
2910 || ((info->symbolic || h->dynindx == -1)
f5385ebf 2911 && h->def_regular))
6edf0760
NC		 2912 {
2913 relocate = TRUE;
2914 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2915 outrel.r_addend = relocation + rel->r_addend;
2916 }
2917 else
2918 {
2919 BFD_ASSERT (h->dynindx != -1);
2920 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2921 outrel.r_addend = relocation + rel->r_addend;
2922 }
2923 }
2924
2925 loc = sreloc->contents;
47b0e7ad 2926 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC		 2927 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2928 ++sreloc->reloc_count;
2929
2930 /* If this reloc is against an external symbol, we do
2931 not want to fiddle with the addend. Otherwise, we
2932 need to include the symbol value so that it becomes
2933 an addend for the dynamic reloc. */
2934 if (! relocate)
2935 continue;
8ce757c4 2936 break;
6edf0760 2937 }
8ce757c4
NC		 2938 else if (r_type != R_M32R_10_PCREL_RELA)
2939 break;
2940 /* Fall through. */
41978308 2941
252b5132
RH		 2942 case (int) R_M32R_10_PCREL :
2943 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2944 contents, offset,
2945 sec, relocation, addend);
6edf0760 2946 goto check_reloc;
252b5132
RH		 2947
2948 case (int) R_M32R_HI16_SLO :
2949 case (int) R_M32R_HI16_ULO :
2950 {
2951 Elf_Internal_Rela *lorel;
2952
2953 /* We allow an arbitrary number of HI16 relocs before the
2954 LO16 reloc. This permits gcc to emit the HI and LO relocs
2955 itself. */
2956 for (lorel = rel + 1;
2957 (lorel < relend
2958 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2959 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2960 lorel++)
2961 continue;
2962 if (lorel < relend
2963 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2964 {
2965 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2966 contents, relocation + addend);
2967 r = bfd_reloc_ok;
2968 }
2969 else
2970 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2971 contents, offset,
2972 relocation, addend);
2973 }
6edf0760
NC		 2974
2975 goto check_reloc;
252b5132 2976
af705ba8 2977 case (int) R_M32R_SDA16_RELA:
252b5132
RH		 2978 case (int) R_M32R_SDA16 :
2979 {
2980 const char *name;
2981
2982 BFD_ASSERT (sec != NULL);
a0f49396 2983 name = bfd_get_section_name (sec->owner, sec);
252b5132 2984
47b0e7ad 2985 if ( strcmp (name, ".sdata") == 0
252b5132
RH		 2986 || strcmp (name, ".sbss") == 0
2987 || strcmp (name, ".scommon") == 0)
2988 {
2989 bfd_vma sda_base;
2990 bfd *out_bfd = sec->output_section->owner;
2991
2992 r = m32r_elf_final_sda_base (out_bfd, info,
2993 &errmsg,
2994 &sda_base);
2995 if (r != bfd_reloc_ok)
2996 {
b34976b6 2997 ret = FALSE;
252b5132
RH		 2998 goto check_reloc;
2999 }
3000
3001 /* At this point `relocation' contains the object's
3002 address. */
3003 relocation -= sda_base;
3004 /* Now it contains the offset from _SDA_BASE_. */
3005 }
3006 else
3007 {
8f615d07 3008 (*_bfd_error_handler)
d003868e
AM		 3009 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3010 input_bfd,
3011 sec,
8f615d07 3012 sym_name,
d003868e 3013 m32r_elf_howto_table[(int) r_type].name);
252b5132 3014 /*bfd_set_error (bfd_error_bad_value); ??? why? */
b34976b6 3015 ret = FALSE;
252b5132
RH		 3016 continue;
3017 }
3018 }
47b0e7ad 3019 /* Fall through. */
6edf0760
NC		 3020
3021 default : /* OLD_M32R_RELOC */
252b5132 3022
252b5132
RH		 3023 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3024 contents, offset,
3025 relocation, addend);
6edf0760 3026 goto check_reloc;
252b5132 3027 }
6edf0760
NC		 3028
3029 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3030 contents, rel->r_offset,
3031 relocation, rel->r_addend);
3032
252b5132
RH		 3033 }
3034
3035 check_reloc:
3036
3037 if (r != bfd_reloc_ok)
3038 {
3039 /* FIXME: This should be generic enough to go in a utility. */
3040 const char *name;
3041
3042 if (h != NULL)
3043 name = h->root.root.string;
3044 else
3045 {
3046 name = (bfd_elf_string_from_elf_section
3047 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3048 if (name == NULL || *name == '\0')
3049 name = bfd_section_name (input_bfd, sec);
3050 }
3051
3052 if (errmsg != NULL)
3053 goto common_error;
3054
3055 switch (r)
3056 {
3057 case bfd_reloc_overflow:
3058 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3059 (info, (h ? &h->root : NULL), name, howto->name,
3060 (bfd_vma) 0, input_bfd, input_section, offset)))
b34976b6 3061 return FALSE;
252b5132
RH		 3062 break;
3063
3064 case bfd_reloc_undefined:
3065 if (! ((*info->callbacks->undefined_symbol)
3066 (info, name, input_bfd, input_section,
b34976b6
AM		 3067 offset, TRUE)))
3068 return FALSE;
252b5132
RH		 3069 break;
3070
3071 case bfd_reloc_outofrange:
3072 errmsg = _("internal error: out of range error");
3073 goto common_error;
3074
3075 case bfd_reloc_notsupported:
3076 errmsg = _("internal error: unsupported relocation error");
3077 goto common_error;
3078
3079 case bfd_reloc_dangerous:
3080 errmsg = _("internal error: dangerous error");
3081 goto common_error;
3082
3083 default:
3084 errmsg = _("internal error: unknown error");
3085 /* fall through */
3086
3087 common_error:
3088 if (!((*info->callbacks->warning)
3089 (info, errmsg, name, input_bfd, input_section,
3090 offset)))
b34976b6 3091 return FALSE;
252b5132
RH		 3092 break;
3093 }
3094 }
3095 }
3096
3097 return ret;
3098}
6edf0760
NC		 3099
3100/* Finish up dynamic symbol handling. We set the contents of various
3101 dynamic sections here. */
47b0e7ad 3102
6edf0760 3103static bfd_boolean
47b0e7ad
NC		 3104m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3105 struct bfd_link_info *info,
3106 struct elf_link_hash_entry *h,
3107 Elf_Internal_Sym *sym)
6edf0760
NC		 3108{
3109 struct elf_m32r_link_hash_table *htab;
6edf0760 3110 bfd_byte *loc;
41978308 3111
6edf0760 3112#ifdef DEBUG_PIC
47b0e7ad 3113 printf ("m32r_elf_finish_dynamic_symbol()\n");
6edf0760 3114#endif
41978308 3115
6edf0760 3116 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 3117 if (htab == NULL)
3118 return FALSE;
3119
6edf0760
NC		 3120 if (h->plt.offset != (bfd_vma) -1)
3121 {
3122 asection *splt;
3123 asection *sgot;
3124 asection *srela;
3125
3126 bfd_vma plt_index;
3127 bfd_vma got_offset;
3128 Elf_Internal_Rela rela;
41978308 3129
6edf0760
NC		 3130 /* This symbol has an entry in the procedure linkage table. Set
3131 it up. */
41978308 3132
6edf0760 3133 BFD_ASSERT (h->dynindx != -1);
41978308 3134
6edf0760
NC		 3135 splt = htab->splt;
3136 sgot = htab->sgotplt;
3137 srela = htab->srelplt;
3138 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3139
3140 /* Get the index in the procedure linkage table which
3141 corresponds to this symbol. This is the index of this symbol
3142 in all the symbols for which we are making plt entries. The
3143 first entry in the procedure linkage table is reserved. */
3144 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3145
3146 /* Get the offset into the .got table of the entry that
3147 corresponds to this function. Each .got entry is 4 bytes.
3148 The first three are reserved. */
3149 got_offset = (plt_index + 3) * 4;
3150
3151 /* Fill in the entry in the procedure linkage table. */
3152 if (! info->shared)
3153 {
3154 bfd_put_32 (output_bfd,
3155 (PLT_ENTRY_WORD0b
3156 + (((sgot->output_section->vma
3157 + sgot->output_offset
3158 + got_offset) >> 16) & 0xffff)),
3159 splt->contents + h->plt.offset);
3160 bfd_put_32 (output_bfd,
3161 (PLT_ENTRY_WORD1b
3162 + ((sgot->output_section->vma
3163 + sgot->output_offset
3164 + got_offset) & 0xffff)),
3165 splt->contents + h->plt.offset + 4);
3166 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3167 splt->contents + h->plt.offset + 8);
3168 bfd_put_32 (output_bfd,
3169 (PLT_ENTRY_WORD3
3170 + plt_index * sizeof (Elf32_External_Rela)),
3171 splt->contents + h->plt.offset + 12);
3172 bfd_put_32 (output_bfd,
3173 (PLT_ENTRY_WORD4
3174 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3175 splt->contents + h->plt.offset + 16);
3176 }
3177 else
3178 {
3179 bfd_put_32 (output_bfd,
3180 PLT_ENTRY_WORD0 + got_offset,
3181 splt->contents + h->plt.offset);
3182 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3183 splt->contents + h->plt.offset + 4);
3184 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3185 splt->contents + h->plt.offset + 8);
3186 bfd_put_32 (output_bfd,
3187 (PLT_ENTRY_WORD3
3188 + plt_index * sizeof (Elf32_External_Rela)),
3189 splt->contents + h->plt.offset + 12);
3190 bfd_put_32 (output_bfd,
3191 (PLT_ENTRY_WORD4
3192 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3193 splt->contents + h->plt.offset + 16);
3194 }
41978308 3195
6edf0760
NC		 3196 /* Fill in the entry in the global offset table. */
3197 bfd_put_32 (output_bfd,
3198 (splt->output_section->vma
3199 + splt->output_offset
3200 + h->plt.offset
3201 + 12), /* same offset */
3202 sgot->contents + got_offset);
3203
3204 /* Fill in the entry in the .rela.plt section. */
3205 rela.r_offset = (sgot->output_section->vma
3206 + sgot->output_offset
3207 + got_offset);
3208 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3209 rela.r_addend = 0;
3210 loc = srela->contents;
47b0e7ad 3211 loc += plt_index * sizeof (Elf32_External_Rela);
6edf0760 3212 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
41978308 3213
f5385ebf 3214 if (!h->def_regular)
6edf0760
NC		 3215 {
3216 /* Mark the symbol as undefined, rather than as defined in
3217 the .plt section. Leave the value alone. */
3218 sym->st_shndx = SHN_UNDEF;
3219 }
3220 }
3221
3222 if (h->got.offset != (bfd_vma) -1)
3223 {
3224 asection *sgot;
3225 asection *srela;
3226 Elf_Internal_Rela rela;
41978308 3227
6edf0760
NC		 3228 /* This symbol has an entry in the global offset table. Set it
3229 up. */
41978308 3230
6edf0760
NC		 3231 sgot = htab->sgot;
3232 srela = htab->srelgot;
3233 BFD_ASSERT (sgot != NULL && srela != NULL);
41978308 3234
6edf0760
NC		 3235 rela.r_offset = (sgot->output_section->vma
3236 + sgot->output_offset
3237 + (h->got.offset &~ 1));
41978308 3238
6edf0760
NC		 3239 /* If this is a -Bsymbolic link, and the symbol is defined
3240 locally, we just want to emit a RELATIVE reloc. Likewise if
3241 the symbol was forced to be local because of a version file.
3242 The entry in the global offset table will already have been
3243 initialized in the relocate_section function. */
3244 if (info->shared
3245 && (info->symbolic
3246 || h->dynindx == -1
f5385ebf
AM		 3247 || h->forced_local)
3248 && h->def_regular)
6edf0760
NC		 3249 {
3250 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3251 rela.r_addend = (h->root.u.def.value
3252 + h->root.u.def.section->output_section->vma
3253 + h->root.u.def.section->output_offset);
3254 }
3255 else
3256 {
47b0e7ad 3257 BFD_ASSERT ((h->got.offset & 1) == 0);
6edf0760
NC		 3258 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3259 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3260 rela.r_addend = 0;
3261 }
41978308 3262
6edf0760 3263 loc = srela->contents;
47b0e7ad 3264 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC		 3265 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3266 ++srela->reloc_count;
3267 }
41978308 3268
f5385ebf 3269 if (h->needs_copy)
6edf0760
NC		 3270 {
3271 asection *s;
3272 Elf_Internal_Rela rela;
41978308 3273
6edf0760 3274 /* This symbols needs a copy reloc. Set it up. */
41978308 3275
6edf0760
NC		 3276 BFD_ASSERT (h->dynindx != -1
3277 && (h->root.type == bfd_link_hash_defined
3278 || h->root.type == bfd_link_hash_defweak));
41978308 3279
3d4d4302 3280 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6edf0760 3281 BFD_ASSERT (s != NULL);
41978308 3282
6edf0760
NC		 3283 rela.r_offset = (h->root.u.def.value
3284 + h->root.u.def.section->output_section->vma
3285 + h->root.u.def.section->output_offset);
3286 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3287 rela.r_addend = 0;
3288 loc = s->contents;
47b0e7ad 3289 loc += s->reloc_count * sizeof (Elf32_External_Rela);
6edf0760
NC		 3290 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3291 ++s->reloc_count;
3292 }
41978308 3293
6edf0760 3294 /* Mark some specially defined symbols as absolute. */
9637f6ef 3295 if (h == htab->root.hdynamic || h == htab->root.hgot)
6edf0760 3296 sym->st_shndx = SHN_ABS;
41978308 3297
6edf0760
NC		 3298 return TRUE;
3299}
3300
3301
3302/* Finish up the dynamic sections. */
41978308 3303
6edf0760 3304static bfd_boolean
47b0e7ad
NC		 3305m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3306 struct bfd_link_info *info)
6edf0760
NC		 3307{
3308 struct elf_m32r_link_hash_table *htab;
3309 bfd *dynobj;
3310 asection *sdyn;
3311 asection *sgot;
3312
3313#ifdef DEBUG_PIC
47b0e7ad 3314 printf ("m32r_elf_finish_dynamic_sections()\n");
6edf0760 3315#endif
41978308 3316
6edf0760 3317 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 3318 if (htab == NULL)
3319 return FALSE;
3320
6edf0760
NC		 3321 dynobj = htab->root.dynobj;
3322
3323 sgot = htab->sgotplt;
3d4d4302 3324 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
41978308 3325
6edf0760
NC		 3326 if (htab->root.dynamic_sections_created)
3327 {
3328 asection *splt;
3329 Elf32_External_Dyn *dyncon, *dynconend;
41978308 3330
6edf0760 3331 BFD_ASSERT (sgot != NULL && sdyn != NULL);
41978308 3332
6edf0760 3333 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3334 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6edf0760
NC		 3335
3336 for (; dyncon < dynconend; dyncon++)
3337 {
3338 Elf_Internal_Dyn dyn;
6edf0760 3339 asection *s;
41978308 3340
6edf0760 3341 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
41978308 3342
6edf0760
NC		 3343 switch (dyn.d_tag)
3344 {
3345 default:
3346 break;
3347
3348 case DT_PLTGOT:
41978308 3349 s = htab->sgot->output_section;
6edf0760
NC		 3350 goto get_vma;
3351 case DT_JMPREL:
6edf0760
NC		 3352 s = htab->srelplt->output_section;
3353 get_vma:
3354 BFD_ASSERT (s != NULL);
3355 dyn.d_un.d_ptr = s->vma;
3356 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3357 break;
3358
3359 case DT_PLTRELSZ:
3360 s = htab->srelplt->output_section;
3361 BFD_ASSERT (s != NULL);
eea6121a 3362 dyn.d_un.d_val = s->size;
6edf0760
NC		 3363 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3364 break;
3365
3366 case DT_RELASZ:
3367 /* My reading of the SVR4 ABI indicates that the
3368 procedure linkage table relocs (DT_JMPREL) should be
3369 included in the overall relocs (DT_RELA). This is
3370 what Solaris does. However, UnixWare can not handle
3371 that case. Therefore, we override the DT_RELASZ entry
3372 here to make it not include the JMPREL relocs. Since
3373 the linker script arranges for .rela.plt to follow all
3374 other relocation sections, we don't have to worry
3375 about changing the DT_RELA entry. */
3376 if (htab->srelplt != NULL)
3377 {
3378 s = htab->srelplt->output_section;
eea6121a 3379 dyn.d_un.d_val -= s->size;
6edf0760
NC		 3380 }
3381 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3382 break;
3383 }
3384 }
41978308 3385
6edf0760
NC		 3386 /* Fill in the first entry in the procedure linkage table. */
3387 splt = htab->splt;
eea6121a 3388 if (splt && splt->size > 0)
6edf0760
NC		 3389 {
3390 if (info->shared)
3391 {
3392 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3393 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3394 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3395 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3396 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3397 }
3398 else
3399 {
3400 unsigned long addr;
3401 /* addr = .got + 4 */
3402 addr = sgot->output_section->vma + sgot->output_offset + 4;
3403 bfd_put_32 (output_bfd,
3404 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3405 splt->contents);
41978308 3406 bfd_put_32 (output_bfd,
6edf0760
NC		 3407 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3408 splt->contents + 4);
3409 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3410 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3411 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3412 }
3413
3414 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3415 PLT_ENTRY_SIZE;
3416 }
3417 }
3418
3419 /* Fill in the first three entries in the global offset table. */
eea6121a 3420 if (sgot && sgot->size > 0)
6edf0760
NC		 3421 {
3422 if (sdyn == NULL)
3423 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3424 else
3425 bfd_put_32 (output_bfd,
3426 sdyn->output_section->vma + sdyn->output_offset,
3427 sgot->contents);
3428 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3429 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3430
3431 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3432 }
41978308 3433
6edf0760
NC		 3434 return TRUE;
3435}
3436
252b5132
RH		 3437\f
3438/* Set the right machine number. */
47b0e7ad 3439
b34976b6 3440static bfd_boolean
47b0e7ad 3441m32r_elf_object_p (bfd *abfd)
252b5132
RH		 3442{
3443 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3444 {
3445 default:
3446 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
e916b64e 3447 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
88845958 3448 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
252b5132 3449 }
b34976b6 3450 return TRUE;
252b5132
RH		 3451}
3452
3453/* Store the machine number in the flags field. */
47b0e7ad 3454
252b5132 3455static void
47b0e7ad
NC		 3456m32r_elf_final_write_processing (bfd *abfd,
3457 bfd_boolean linker ATTRIBUTE_UNUSED)
252b5132
RH		 3458{
3459 unsigned long val;
3460
3461 switch (bfd_get_mach (abfd))
3462 {
3463 default:
3464 case bfd_mach_m32r: val = E_M32R_ARCH; break;
e916b64e 3465 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
88845958 3466 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
252b5132
RH		 3467 }
3468
3469 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3470 elf_elfheader (abfd)->e_flags |= val;
3471}
3472
c3668558 3473/* Function to keep M32R specific file flags. */
47b0e7ad 3474
b34976b6 3475static bfd_boolean
47b0e7ad 3476m32r_elf_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 3477{
3478 BFD_ASSERT (!elf_flags_init (abfd)
3479 || elf_elfheader (abfd)->e_flags == flags);
3480
3481 elf_elfheader (abfd)->e_flags = flags;
b34976b6
AM		 3482 elf_flags_init (abfd) = TRUE;
3483 return TRUE;
252b5132
RH		 3484}
3485
252b5132
RH		 3486/* Merge backend specific data from an object file to the output
3487 object file when linking. */
47b0e7ad 3488
b34976b6 3489static bfd_boolean
47b0e7ad 3490m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 3491{
3492 flagword out_flags;
3493 flagword in_flags;
3494
3495 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3496 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 3497 return TRUE;
252b5132
RH		 3498
3499 in_flags = elf_elfheader (ibfd)->e_flags;
3500 out_flags = elf_elfheader (obfd)->e_flags;
3501
3502 if (! elf_flags_init (obfd))
3503 {
3504 /* If the input is the default architecture then do not
3505 bother setting the flags for the output architecture,
3506 instead allow future merges to do this. If no future
3507 merges ever set these flags then they will retain their
3508 unitialised values, which surprise surprise, correspond
3509 to the default values. */
3510 if (bfd_get_arch_info (ibfd)->the_default)
b34976b6 3511 return TRUE;
c3668558 3512
b34976b6 3513 elf_flags_init (obfd) = TRUE;
252b5132
RH		 3514 elf_elfheader (obfd)->e_flags = in_flags;
3515
3516 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3517 && bfd_get_arch_info (obfd)->the_default)
47b0e7ad
NC		 3518 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3519 bfd_get_mach (ibfd));
252b5132 3520
b34976b6 3521 return TRUE;
252b5132
RH		 3522 }
3523
3524 /* Check flag compatibility. */
3525 if (in_flags == out_flags)
b34976b6 3526 return TRUE;
252b5132
RH		 3527
3528 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3529 {
88845958
NC		 3530 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3531 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3532 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
252b5132 3533 {
8f615d07 3534 (*_bfd_error_handler)
d003868e 3535 (_("%B: Instruction set mismatch with previous modules"), ibfd);
252b5132
RH		 3536
3537 bfd_set_error (bfd_error_bad_value);
b34976b6 3538 return FALSE;
252b5132
RH		 3539 }
3540 }
3541
b34976b6 3542 return TRUE;
252b5132
RH		 3543}
3544
47b0e7ad
NC		 3545/* Display the flags field. */
3546
b34976b6 3547static bfd_boolean
47b0e7ad 3548m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132
RH		 3549{
3550 FILE * file = (FILE *) ptr;
c3668558 3551
f12123c0 3552 BFD_ASSERT (abfd != NULL && ptr != NULL);
c3668558 3553
252b5132 3554 _bfd_elf_print_private_bfd_data (abfd, ptr);
c3668558 3555
252b5132 3556 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
c3668558 3557
252b5132
RH		 3558 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3559 {
3560 default:
3561 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
e916b64e 3562 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
88845958 3563 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
252b5132 3564 }
c3668558 3565
252b5132 3566 fputc ('\n', file);
c3668558 3567
b34976b6 3568 return TRUE;
252b5132
RH		 3569}
3570
47b0e7ad
NC		 3571static asection *
3572m32r_elf_gc_mark_hook (asection *sec,
07adf181 3573 struct bfd_link_info *info,
47b0e7ad
NC		 3574 Elf_Internal_Rela *rel,
3575 struct elf_link_hash_entry *h,
3576 Elf_Internal_Sym *sym)
252b5132
RH		 3577{
3578 if (h != NULL)
07adf181 3579 switch (ELF32_R_TYPE (rel->r_info))
252b5132
RH		 3580 {
3581 case R_M32R_GNU_VTINHERIT:
3582 case R_M32R_GNU_VTENTRY:
6edf0760
NC		 3583 case R_M32R_RELA_GNU_VTINHERIT:
3584 case R_M32R_RELA_GNU_VTENTRY:
07adf181
AM		 3585 return NULL;
3586 }
1e2f5b6e 3587
07adf181 3588 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 3589}
3590
b34976b6 3591static bfd_boolean
47b0e7ad
NC		 3592m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3593 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3594 asection *sec ATTRIBUTE_UNUSED,
3595 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
252b5132 3596{
6edf0760
NC		 3597 /* Update the got entry reference counts for the section being removed. */
3598 Elf_Internal_Shdr *symtab_hdr;
3599 struct elf_link_hash_entry **sym_hashes;
3600 bfd_signed_vma *local_got_refcounts;
3601 const Elf_Internal_Rela *rel, *relend;
6edf0760 3602
7dda2462
TG		 3603 if (info->relocatable)
3604 return TRUE;
3605
6edf0760
NC		 3606 elf_section_data (sec)->local_dynrel = NULL;
3607
3608 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3609 sym_hashes = elf_sym_hashes (abfd);
3610 local_got_refcounts = elf_local_got_refcounts (abfd);
3611
3612 relend = relocs + sec->reloc_count;
3613 for (rel = relocs; rel < relend; rel++)
3eb128b2
AM		 3614 {
3615 unsigned long r_symndx;
3616 struct elf_link_hash_entry *h = NULL;
6edf0760 3617
3eb128b2
AM		 3618 r_symndx = ELF32_R_SYM (rel->r_info);
3619 if (r_symndx >= symtab_hdr->sh_info)
3620 {
3621 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3622 while (h->root.type == bfd_link_hash_indirect
3623 || h->root.type == bfd_link_hash_warning)
3624 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3625 }
6edf0760 3626
3eb128b2
AM		 3627 switch (ELF32_R_TYPE (rel->r_info))
3628 {
3629 case R_M32R_GOT16_HI_ULO:
3630 case R_M32R_GOT16_HI_SLO:
3631 case R_M32R_GOT16_LO:
3632 case R_M32R_GOTOFF:
3633 case R_M32R_GOTOFF_HI_ULO:
3634 case R_M32R_GOTOFF_HI_SLO:
3635 case R_M32R_GOTOFF_LO:
3636 case R_M32R_GOT24:
3637 case R_M32R_GOTPC_HI_ULO:
3638 case R_M32R_GOTPC_HI_SLO:
3639 case R_M32R_GOTPC_LO:
3640 case R_M32R_GOTPC24:
3641 if (h != NULL)
3642 {
3643 if (h->got.refcount > 0)
3644 h->got.refcount--;
3645 }
3646 else
3647 {
3648 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3649 local_got_refcounts[r_symndx]--;
3650 }
3651 break;
3652
3653 case R_M32R_16_RELA:
3654 case R_M32R_24_RELA:
3655 case R_M32R_32_RELA:
157e7bd1 3656 case R_M32R_REL32:
3eb128b2
AM		 3657 case R_M32R_HI16_ULO_RELA:
3658 case R_M32R_HI16_SLO_RELA:
3659 case R_M32R_LO16_RELA:
3660 case R_M32R_SDA16_RELA:
8ce757c4 3661 case R_M32R_10_PCREL_RELA:
3eb128b2
AM		 3662 case R_M32R_18_PCREL_RELA:
3663 case R_M32R_26_PCREL_RELA:
3664 if (h != NULL)
3665 {
3666 struct elf_m32r_link_hash_entry *eh;
3667 struct elf_m32r_dyn_relocs **pp;
3668 struct elf_m32r_dyn_relocs *p;
6edf0760 3669
3eb128b2
AM		 3670 if (!info->shared && h->plt.refcount > 0)
3671 h->plt.refcount -= 1;
6edf0760 3672
3eb128b2 3673 eh = (struct elf_m32r_link_hash_entry *) h;
6edf0760 3674
3eb128b2
AM		 3675 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3676 if (p->sec == sec)
3677 {
8ce757c4
NC		 3678 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3679 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3680 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
157e7bd1 3681 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3eb128b2
AM		 3682 p->pc_count -= 1;
3683 p->count -= 1;
3684 if (p->count == 0)
3685 *pp = p->next;
3686 break;
3687 }
3688 }
3689 break;
6edf0760 3690
3eb128b2
AM		 3691 case R_M32R_26_PLTREL:
3692 if (h != NULL)
3693 {
3694 if (h->plt.refcount > 0)
3695 h->plt.refcount--;
3696 }
3697 break;
6edf0760 3698
3eb128b2
AM		 3699 default:
3700 break;
3701 }
3702 }
6edf0760 3703
b34976b6 3704 return TRUE;
252b5132
RH		 3705}
3706
252b5132
RH		 3707/* Look through the relocs for a section during the first phase.
3708 Since we don't do .gots or .plts, we just need to consider the
3709 virtual table relocs for gc. */
c3668558 3710
b34976b6 3711static bfd_boolean
47b0e7ad
NC		 3712m32r_elf_check_relocs (bfd *abfd,
3713 struct bfd_link_info *info,
3714 asection *sec,
3715 const Elf_Internal_Rela *relocs)
252b5132
RH		 3716{
3717 Elf_Internal_Shdr *symtab_hdr;
5582a088 3718 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 3719 const Elf_Internal_Rela *rel;
3720 const Elf_Internal_Rela *rel_end;
6edf0760
NC		 3721 struct elf_m32r_link_hash_table *htab;
3722 bfd *dynobj;
c7e2358a 3723 asection *sreloc;
c3668558 3724
1049f94e 3725 if (info->relocatable)
b34976b6 3726 return TRUE;
c3668558 3727
c7e2358a 3728 sreloc = NULL;
252b5132
RH		 3729 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3730 sym_hashes = elf_sym_hashes (abfd);
c3668558 3731
6edf0760 3732 htab = m32r_elf_hash_table (info);
4dfe6ac6
NC		 3733 if (htab == NULL)
3734 return FALSE;
3735
6edf0760 3736 dynobj = htab->root.dynobj;
6edf0760 3737
252b5132
RH		 3738 rel_end = relocs + sec->reloc_count;
3739 for (rel = relocs; rel < rel_end; rel++)
3740 {
6edf0760 3741 int r_type;
252b5132
RH		 3742 struct elf_link_hash_entry *h;
3743 unsigned long r_symndx;
c3668558 3744
252b5132 3745 r_symndx = ELF32_R_SYM (rel->r_info);
6edf0760 3746 r_type = ELF32_R_TYPE (rel->r_info);
252b5132
RH		 3747 if (r_symndx < symtab_hdr->sh_info)
3748 h = NULL;
3749 else
973a3492
L		 3750 {
3751 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3752 while (h->root.type == bfd_link_hash_indirect
3753 || h->root.type == bfd_link_hash_warning)
3754 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 3755
3756 /* PR15323, ref flags aren't set for references in the same
3757 object. */
3758 h->root.non_ir_ref = 1;
973a3492 3759 }
c3668558 3760
6edf0760
NC		 3761 /* Some relocs require a global offset table. */
3762 if (htab->sgot == NULL)
3763 {
3764 switch (r_type)
3765 {
3766 case R_M32R_GOT16_HI_ULO:
3767 case R_M32R_GOT16_HI_SLO:
097f809a
NC		 3768 case R_M32R_GOTOFF:
3769 case R_M32R_GOTOFF_HI_ULO:
3770 case R_M32R_GOTOFF_HI_SLO:
3771 case R_M32R_GOTOFF_LO:
6edf0760
NC		 3772 case R_M32R_GOT16_LO:
3773 case R_M32R_GOTPC24:
3774 case R_M32R_GOTPC_HI_ULO:
3775 case R_M32R_GOTPC_HI_SLO:
3776 case R_M32R_GOTPC_LO:
3777 case R_M32R_GOT24:
3778 if (dynobj == NULL)
3779 htab->root.dynobj = dynobj = abfd;
3780 if (! create_got_section (dynobj, info))
3781 return FALSE;
3782 break;
3783
3784 default:
3785 break;
3786 }
3787 }
3788
3789 switch (r_type)
252b5132 3790 {
6edf0760
NC		 3791 case R_M32R_GOT16_HI_ULO:
3792 case R_M32R_GOT16_HI_SLO:
41978308 3793 case R_M32R_GOT16_LO:
6edf0760
NC		 3794 case R_M32R_GOT24:
3795
3796 if (h != NULL)
3797 h->got.refcount += 1;
3798 else
3799 {
3800 bfd_signed_vma *local_got_refcounts;
3801
3802 /* This is a global offset table entry for a local
3803 symbol. */
3804 local_got_refcounts = elf_local_got_refcounts (abfd);
3805 if (local_got_refcounts == NULL)
3806 {
3807 bfd_size_type size;
3808
3809 size = symtab_hdr->sh_info;
3810 size *= sizeof (bfd_signed_vma);
47b0e7ad 3811 local_got_refcounts = bfd_zalloc (abfd, size);
6edf0760
NC		 3812 if (local_got_refcounts == NULL)
3813 return FALSE;
3814 elf_local_got_refcounts (abfd) = local_got_refcounts;
3815 }
3816 local_got_refcounts[r_symndx] += 1;
3817 }
3818 break;
3819
3820 case R_M32R_26_PLTREL:
3821 /* This symbol requires a procedure linkage table entry. We
3822 actually build the entry in adjust_dynamic_symbol,
3823 because this might be a case of linking PIC code without
3824 linking in any dynamic objects, in which case we don't
3825 need to generate a procedure linkage table after all. */
41978308 3826
6edf0760
NC		 3827 /* If this is a local symbol, we resolve it directly without
3828 creating a procedure linkage table entry. */
3829 if (h == NULL)
3830 continue;
3831
f5385ebf 3832 if (h->forced_local)
6edf0760
NC		 3833 break;
3834
f5385ebf 3835 h->needs_plt = 1;
6edf0760
NC		 3836 h->plt.refcount += 1;
3837 break;
3838
3839 case R_M32R_16_RELA:
3840 case R_M32R_24_RELA:
3841 case R_M32R_32_RELA:
157e7bd1 3842 case R_M32R_REL32:
6edf0760
NC		 3843 case R_M32R_HI16_ULO_RELA:
3844 case R_M32R_HI16_SLO_RELA:
3845 case R_M32R_LO16_RELA:
3846 case R_M32R_SDA16_RELA:
8ce757c4 3847 case R_M32R_10_PCREL_RELA:
6edf0760
NC		 3848 case R_M32R_18_PCREL_RELA:
3849 case R_M32R_26_PCREL_RELA:
3850
3851 if (h != NULL && !info->shared)
3852 {
f5385ebf 3853 h->non_got_ref = 1;
6edf0760
NC		 3854 h->plt.refcount += 1;
3855 }
3856
3857 /* If we are creating a shared library, and this is a reloc
3858 against a global symbol, or a non PC relative reloc
3859 against a local symbol, then we need to copy the reloc
3860 into the shared library. However, if we are linking with
3861 -Bsymbolic, we do not need to copy a reloc against a
3862 global symbol which is defined in an object we are
3863 including in the link (i.e., DEF_REGULAR is set). At
3864 this point we have not seen all the input files, so it is
3865 possible that DEF_REGULAR is not set now but will be set
3866 later (it is never cleared). We account for that
3867 possibility below by storing information in the
3868 dyn_relocs field of the hash table entry. A similar
3869 situation occurs when creating shared libraries and symbol
3870 visibility changes render the symbol local.
3871
3872 If on the other hand, we are creating an executable, we
3873 may need to keep relocations for symbols satisfied by a
3874 dynamic library if we manage to avoid copy relocs for the
3875 symbol. */
3876 if ((info->shared
3877 && (sec->flags & SEC_ALLOC) != 0
8ce757c4 3878 && (( r_type != R_M32R_26_PCREL_RELA
157e7bd1 3879 && r_type != R_M32R_18_PCREL_RELA
8ce757c4 3880 && r_type != R_M32R_10_PCREL_RELA
157e7bd1 3881 && r_type != R_M32R_REL32)
6edf0760
NC		 3882 || (h != NULL
3883 && (! info->symbolic
3884 || h->root.type == bfd_link_hash_defweak
f5385ebf 3885 || !h->def_regular))))
6edf0760
NC		 3886 || (!info->shared
3887 && (sec->flags & SEC_ALLOC) != 0
3888 && h != NULL
3889 && (h->root.type == bfd_link_hash_defweak
f5385ebf 3890 || !h->def_regular)))
6edf0760
NC		 3891 {
3892 struct elf_m32r_dyn_relocs *p;
3893 struct elf_m32r_dyn_relocs **head;
3894
3895 if (dynobj == NULL)
3896 htab->root.dynobj = dynobj = abfd;
3897
3898 /* When creating a shared object, we must copy these
3899 relocs into the output file. We create a reloc
3900 section in dynobj and make room for the reloc. */
3901 if (sreloc == NULL)
3902 {
83bac4b0
NC		 3903 sreloc = _bfd_elf_make_dynamic_reloc_section
3904 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
41978308 3905
83bac4b0
NC		 3906 if (sreloc == NULL)
3907 return FALSE;
6edf0760 3908 }
41978308 3909
6edf0760
NC		 3910 /* If this is a global symbol, we count the number of
3911 relocations we need for this symbol. */
3912 if (h != NULL)
3913 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3914 else
3915 {
87d72d41 3916 /* Track dynamic relocs needed for local syms too. */
6edf0760 3917 asection *s;
6edfbbad 3918 void *vpp;
87d72d41 3919 Elf_Internal_Sym *isym;
6edf0760 3920
87d72d41
AM		 3921 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3922 abfd, r_symndx);
3923 if (isym == NULL)
3924 return FALSE;
3925
3926 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3927 if (s == NULL)
3928 s = sec;
6edf0760 3929
6edfbbad
DJ		 3930 vpp = &elf_section_data (s)->local_dynrel;
3931 head = (struct elf_m32r_dyn_relocs **) vpp;
6edf0760
NC		 3932 }
3933
3934 p = *head;
3935 if (p == NULL || p->sec != sec)
3936 {
3937 bfd_size_type amt = sizeof (*p);
47b0e7ad
NC		 3938
3939 p = bfd_alloc (dynobj, amt);
6edf0760
NC		 3940 if (p == NULL)
3941 return FALSE;
3942 p->next = *head;
3943 *head = p;
3944 p->sec = sec;
3945 p->count = 0;
3946 p->pc_count = 0;
3947 }
3948
3949 p->count += 1;
8ce757c4
NC		 3950 if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3951 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3952 || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3953 || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
6edf0760
NC		 3954 p->pc_count += 1;
3955 }
3956 break;
3957
252b5132
RH		 3958 /* This relocation describes the C++ object vtable hierarchy.
3959 Reconstruct it for later use during GC. */
6edf0760 3960 case R_M32R_RELA_GNU_VTINHERIT:
252b5132 3961 case R_M32R_GNU_VTINHERIT:
c152c796 3962 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 3963 return FALSE;
252b5132 3964 break;
c3668558 3965
252b5132
RH		 3966 /* This relocation describes which C++ vtable entries are actually
3967 used. Record for later use during GC. */
3968 case R_M32R_GNU_VTENTRY:
d17e0c6e
JB		 3969 BFD_ASSERT (h != NULL);
3970 if (h != NULL
3971 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 3972 return FALSE;
252b5132 3973 break;
6edf0760 3974 case R_M32R_RELA_GNU_VTENTRY:
d17e0c6e
JB		 3975 BFD_ASSERT (h != NULL);
3976 if (h != NULL
3977 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
6edf0760
NC		 3978 return FALSE;
3979 break;
252b5132
RH		 3980 }
3981 }
c3668558 3982
b34976b6 3983 return TRUE;
252b5132 3984}
2f89ff8d 3985
b35d266b 3986static const struct bfd_elf_special_section m32r_elf_special_sections[] =
2f89ff8d 3987{
0112cd26
NC		 3988 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3989 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3990 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 3991};
3992
6edf0760 3993static enum elf_reloc_type_class
7e612e98
AM		 3994m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3995 const asection *rel_sec ATTRIBUTE_UNUSED,
3996 const Elf_Internal_Rela *rela)
6edf0760
NC		 3997{
3998 switch ((int) ELF32_R_TYPE (rela->r_info))
3999 {
47b0e7ad
NC		 4000 case R_M32R_RELATIVE: return reloc_class_relative;
4001 case R_M32R_JMP_SLOT: return reloc_class_plt;
4002 case R_M32R_COPY: return reloc_class_copy;
4003 default: return reloc_class_normal;
6edf0760
NC		 4004 }
4005}
252b5132 4006\f
252b5132 4007#define ELF_ARCH bfd_arch_m32r
ae95ffa6 4008#define ELF_TARGET_ID M32R_ELF_DATA
aa4f99bb
AO		 4009#define ELF_MACHINE_CODE EM_M32R
4010#define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
e916b64e 4011#define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
252b5132 4012
6d00b590 4013#define TARGET_BIG_SYM m32r_elf32_vec
252b5132 4014#define TARGET_BIG_NAME "elf32-m32r"
6d00b590 4015#define TARGET_LITTLE_SYM m32r_elf32_le_vec
6edf0760 4016#define TARGET_LITTLE_NAME "elf32-m32rle"
252b5132 4017
6edf0760 4018#define elf_info_to_howto m32r_info_to_howto
252b5132
RH		 4019#define elf_info_to_howto_rel m32r_info_to_howto_rel
4020#define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4021#define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4022#define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4023#define elf_backend_relocate_section m32r_elf_relocate_section
4024#define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4025#define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4026#define elf_backend_check_relocs m32r_elf_check_relocs
4027
6edf0760
NC		 4028#define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4029#define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4030#define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
74541ad4
AM		 4031#define elf_backend_omit_section_dynsym \
4032 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
6edf0760
NC		 4033#define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4034#define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4035#define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4036#define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4037#define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4038
252b5132 4039#define elf_backend_can_gc_sections 1
6edf0760 4040/*#if !USE_REL
b491616a 4041#define elf_backend_rela_normal 1
6edf0760
NC		 4042#endif*/
4043#define elf_backend_can_refcount 1
4044#define elf_backend_want_got_plt 1
4045#define elf_backend_plt_readonly 1
4046#define elf_backend_want_plt_sym 0
4047#define elf_backend_got_header_size 12
4048
4049#define elf_backend_may_use_rel_p 1
4050#ifdef USE_M32R_OLD_RELOC
4051#define elf_backend_default_use_rela_p 0
4052#define elf_backend_may_use_rela_p 0
4053#else
4054#define elf_backend_default_use_rela_p 1
4055#define elf_backend_may_use_rela_p 1
b491616a 4056#endif
6edf0760 4057
252b5132
RH		 4058#define elf_backend_object_p m32r_elf_object_p
4059#define elf_backend_final_write_processing m32r_elf_final_write_processing
252b5132
RH		 4060#define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4061#define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4062#define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
29ef7005 4063#define elf_backend_special_sections m32r_elf_special_sections
c3668558 4064
252b5132 4065#include "elf32-target.h"
6edf0760 4066
47b0e7ad 4067#undef ELF_MAXPAGESIZE
6edf0760
NC		 4068#define ELF_MAXPAGESIZE 0x1000
4069
47b0e7ad 4070#undef TARGET_BIG_SYM
6d00b590 4071#define TARGET_BIG_SYM m32r_elf32_linux_vec
47b0e7ad 4072#undef TARGET_BIG_NAME
6edf0760 4073#define TARGET_BIG_NAME "elf32-m32r-linux"
47b0e7ad 4074#undef TARGET_LITTLE_SYM
6d00b590 4075#define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
47b0e7ad 4076#undef TARGET_LITTLE_NAME
6edf0760 4077#define TARGET_LITTLE_NAME "elf32-m32rle-linux"
47b0e7ad 4078#undef elf32_bed
6edf0760
NC		 4079#define elf32_bed elf32_m32r_lin_bed
4080
4081#include "elf32-target.h"
4082
GDB Binutils - Deliverables
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