1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
41 /* Functions for the M32R ELF linker. */
43 /* The name of the dynamic interpreter. This is put in the .interp
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
48 /* The nop opcode we use. */
50 #define M32R_NOP 0x7000f000
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
54 /* The size in bytes of an entry in the procedure linkage table. */
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 reloc_howto_type *howto,
89 asection *input_section,
92 asection *symbol_section ATTRIBUTE_UNUSED,
96 bfd_signed_vma relocation;
98 bfd_reloc_status_type status;
100 /* Sanity check the address (offset in section). */
101 if (offset > bfd_get_section_limit (abfd, input_section))
102 return bfd_reloc_outofrange;
104 relocation = symbol_value + addend;
105 /* Make it pc relative. */
106 relocation -= (input_section->output_section->vma
107 + input_section->output_offset);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation -= (offset & -(bfd_vma) 4);
112 if (relocation < -0x200 || relocation > 0x1ff)
113 status = bfd_reloc_overflow;
115 status = bfd_reloc_ok;
117 x = bfd_get_16 (abfd, data + offset);
118 relocation >>= howto->rightshift;
119 relocation <<= howto->bitpos;
120 x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121 bfd_put_16 (abfd, (bfd_vma) x, data + offset);
126 /* Handle the R_M32R_10_PCREL reloc. */
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd * abfd,
130 arelent * reloc_entry,
133 asection * input_section,
135 char ** error_message ATTRIBUTE_UNUSED)
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd != NULL
139 && (symbol->flags & BSF_SECTION_SYM) == 0
140 && (! reloc_entry->howto->partial_inplace
141 || reloc_entry->addend == 0))
143 reloc_entry->address += input_section->output_offset;
147 if (output_bfd != NULL)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue;
151 return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
153 data, reloc_entry->address,
156 + symbol->section->output_section->vma
157 + symbol->section->output_offset),
158 reloc_entry->addend);
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd *input_bfd,
166 arelent *reloc_entry,
169 asection *input_section,
171 char **error_message ATTRIBUTE_UNUSED)
173 bfd_reloc_status_type ret;
175 bfd_byte *inplace_address;
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd != NULL
181 && (symbol->flags & BSF_SECTION_SYM) == 0
182 && reloc_entry->addend == 0)
184 reloc_entry->address += input_section->output_offset;
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196 return bfd_reloc_outofrange;
199 if (bfd_is_und_section (symbol->section)
200 && output_bfd == NULL)
201 ret = bfd_reloc_undefined;
203 if (bfd_is_com_section (symbol->section)
204 || output_bfd != NULL)
207 relocation = symbol->value;
209 /* Only do this for a final link. */
210 if (output_bfd == NULL)
212 relocation += symbol->section->output_section->vma;
213 relocation += symbol->section->output_offset;
216 relocation += reloc_entry->addend;
217 inplace_address = (bfd_byte *) data + reloc_entry->address;
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
224 switch (reloc_entry->howto->size)
228 short x = bfd_get_16 (input_bfd, inplace_address);
230 bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
235 unsigned long x = bfd_get_32 (input_bfd, inplace_address);
237 bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
244 if (output_bfd != NULL)
245 reloc_entry->address += input_section->output_offset;
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 arelent *reloc_entry,
260 void * data ATTRIBUTE_UNUSED,
261 asection *input_section,
263 char **error_message ATTRIBUTE_UNUSED)
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd != NULL
267 && (symbol->flags & BSF_SECTION_SYM) == 0
268 && (! reloc_entry->howto->partial_inplace
269 || reloc_entry->addend == 0))
271 reloc_entry->address += input_section->output_offset;
275 if (output_bfd != NULL)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue;
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
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. */
303 struct m32r_hi16 *next;
308 /* FIXME: This should not be a static variable. */
310 static struct m32r_hi16 *m32r_hi16_list;
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 arelent *reloc_entry,
317 asection *input_section,
319 char **error_message ATTRIBUTE_UNUSED)
321 bfd_reloc_status_type ret;
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd != NULL
329 && (symbol->flags & BSF_SECTION_SYM) == 0
330 && reloc_entry->addend == 0)
332 reloc_entry->address += input_section->output_offset;
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;
341 if (bfd_is_und_section (symbol->section)
342 && output_bfd == NULL)
343 ret = bfd_reloc_undefined;
345 if (bfd_is_com_section (symbol->section))
348 relocation = symbol->value;
350 relocation += symbol->section->output_section->vma;
351 relocation += symbol->section->output_offset;
352 relocation += reloc_entry->addend;
354 /* Save the information, and let LO16 do the actual relocation. */
355 n = bfd_malloc ((bfd_size_type) sizeof *n);
357 return bfd_reloc_outofrange;
358 n->addr = (bfd_byte *) data + reloc_entry->address;
359 n->addend = relocation;
360 n->next = m32r_hi16_list;
363 if (output_bfd != NULL)
364 reloc_entry->address += input_section->output_offset;
369 /* Handle an M32R ELF HI16 reloc. */
372 m32r_elf_relocate_hi16 (bfd *input_bfd,
374 Elf_Internal_Rela *relhi,
375 Elf_Internal_Rela *rello,
382 insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
384 addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385 if (type == R_M32R_HI16_SLO)
386 addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
390 addend += ((insn & 0xffff) << 16) + addlo;
392 /* Reaccount for sign extension of low part. */
393 if (type == R_M32R_HI16_SLO
394 && (addend & 0x8000) != 0)
397 bfd_put_32 (input_bfd,
398 (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 contents + relhi->r_offset);
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd *input_bfd,
408 arelent *reloc_entry,
411 asection *input_section,
413 char **error_message)
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd != NULL
419 && (symbol->flags & BSF_SECTION_SYM) == 0
420 && reloc_entry->addend == 0)
422 reloc_entry->address += input_section->output_offset;
426 if (m32r_hi16_list != NULL)
436 struct m32r_hi16 *next;
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn = bfd_get_32 (input_bfd, l->addr);
442 vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val = ((insn & 0xffff) << 16) + vallo;
447 /* Reaccount for sign extension of low part. */
448 if ((val & 0x8000) != 0)
451 insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
459 m32r_hi16_list = NULL;
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 input_section, output_bfd, error_message);
472 static reloc_howto_type m32r_elf_howto_table[] =
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE, /* pc_relative */
481 complain_overflow_bitfield, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE, /* partial_inplace */
487 FALSE), /* pcrel_offset */
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16, /* type */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
494 FALSE, /* pc_relative */
496 complain_overflow_bitfield, /* complain_on_overflow */
497 m32r_elf_generic_reloc,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32, /* type */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
509 FALSE, /* pc_relative */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 m32r_elf_generic_reloc,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24, /* type */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
524 FALSE, /* pc_relative */
526 complain_overflow_unsigned, /* complain_on_overflow */
527 m32r_elf_generic_reloc,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
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
542 HOWTO (R_M32R_10_PCREL, /* type */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
546 TRUE, /* pc_relative */
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 */
554 TRUE), /* pcrel_offset */
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 TRUE, /* pc_relative */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE), /* pcrel_offset */
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
576 HOWTO (R_M32R_26_PCREL, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 TRUE, /* pc_relative */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE), /* pcrel_offset */
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO, /* type */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE, /* pc_relative */
597 complain_overflow_dont, /* complain_on_overflow */
598 m32r_elf_hi16_reloc, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO, /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 FALSE, /* pc_relative */
612 complain_overflow_dont, /* complain_on_overflow */
613 m32r_elf_hi16_reloc, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16, /* type */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
625 FALSE, /* pc_relative */
627 complain_overflow_dont, /* complain_on_overflow */
628 m32r_elf_lo16_reloc, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16, /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE, /* pc_relative */
642 complain_overflow_signed, /* complain_on_overflow */
643 m32r_elf_sda16_reloc, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT, /* type */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE, /* pc_relative */
657 complain_overflow_dont, /* complain_on_overflow */
658 NULL, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE, /* partial_inplace */
663 FALSE), /* pcrel_offset */
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY, /* type */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE, /* pc_relative */
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 */
678 FALSE), /* pcrel_offset */
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA, /* type */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE, /* pc_relative */
708 complain_overflow_bitfield, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA, /* type */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
721 FALSE, /* pc_relative */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA, /* type */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
736 FALSE, /* pc_relative */
738 complain_overflow_unsigned, /* complain_on_overflow */
739 bfd_elf_generic_reloc,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
746 HOWTO (R_M32R_10_PCREL_RELA, /* type */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
750 TRUE, /* pc_relative */
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 */
758 TRUE), /* pcrel_offset */
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA, /* type */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
765 TRUE, /* pc_relative */
767 complain_overflow_signed, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE), /* pcrel_offset */
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA, /* type */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
780 TRUE, /* pc_relative */
782 complain_overflow_signed, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE), /* pcrel_offset */
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA, /* type */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA, /* type */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA, /* type */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE, /* pc_relative */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA, /* type */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
840 FALSE, /* pc_relative */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
855 FALSE, /* pc_relative */
857 complain_overflow_dont, /* complain_on_overflow */
858 NULL, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE, /* partial_inplace */
863 FALSE), /* pcrel_offset */
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
870 FALSE, /* pc_relative */
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 */
878 FALSE), /* pcrel_offset */
884 /* Like R_M32R_24, but referring to the GOT table entry for
886 HOWTO (R_M32R_GOT24, /* type */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
890 FALSE, /* pc_relative */
892 complain_overflow_unsigned, /* complain_on_overflow */
893 bfd_elf_generic_reloc, /* special_function */
894 "R_M32R_GOT24", /* name */
895 FALSE, /* partial_inplace */
896 0xffffff, /* src_mask */
897 0xffffff, /* dst_mask */
898 FALSE), /* pcrel_offset */
900 /* Like R_M32R_PCREL, but referring to the procedure linkage table
901 entry for the symbol. */
902 HOWTO (R_M32R_26_PLTREL, /* type */
904 2, /* size (0 = byte, 1 = short, 2 = long) */
906 TRUE, /* pc_relative */
908 complain_overflow_signed, /* complain_on_overflow */
909 bfd_elf_generic_reloc, /* special_function */
910 "R_M32R_26_PLTREL", /* name */
911 FALSE, /* partial_inplace */
912 0xffffff, /* src_mask */
913 0xffffff, /* dst_mask */
914 TRUE), /* pcrel_offset */
916 /* This is used only by the dynamic linker. The symbol should exist
917 both in the object being run and in some shared library. The
918 dynamic linker copies the data addressed by the symbol from the
919 shared library into the object, because the object being
920 run has to have the data at some particular address. */
921 HOWTO (R_M32R_COPY, /* type */
923 2, /* size (0 = byte, 1 = short, 2 = long) */
925 FALSE, /* pc_relative */
927 complain_overflow_bitfield, /* complain_on_overflow */
928 bfd_elf_generic_reloc, /* special_function */
929 "R_M32R_COPY", /* name */
930 FALSE, /* partial_inplace */
931 0xffffffff, /* src_mask */
932 0xffffffff, /* dst_mask */
933 FALSE), /* pcrel_offset */
935 /* Like R_M32R_24, but used when setting global offset table
937 HOWTO (R_M32R_GLOB_DAT, /* type */
939 2, /* size (0 = byte, 1 = short, 2 = long) */
941 FALSE, /* pc_relative */
943 complain_overflow_bitfield, /* complain_on_overflow */
944 bfd_elf_generic_reloc, /* special_function */
945 "R_M32R_GLOB_DAT", /* name */
946 FALSE, /* partial_inplace */
947 0xffffffff, /* src_mask */
948 0xffffffff, /* dst_mask */
949 FALSE), /* pcrel_offset */
951 /* Marks a procedure linkage table entry for a symbol. */
952 HOWTO (R_M32R_JMP_SLOT, /* type */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
956 FALSE, /* pc_relative */
958 complain_overflow_bitfield, /* complain_on_overflow */
959 bfd_elf_generic_reloc, /* special_function */
960 "R_M32R_JMP_SLOT", /* name */
961 FALSE, /* partial_inplace */
962 0xffffffff, /* src_mask */
963 0xffffffff, /* dst_mask */
964 FALSE), /* pcrel_offset */
966 /* Used only by the dynamic linker. When the object is run, this
967 longword is set to the load address of the object, plus the
969 HOWTO (R_M32R_RELATIVE, /* type */
971 2, /* size (0 = byte, 1 = short, 2 = long) */
973 FALSE, /* pc_relative */
975 complain_overflow_bitfield, /* complain_on_overflow */
976 bfd_elf_generic_reloc, /* special_function */
977 "R_M32R_RELATIVE", /* name */
978 FALSE, /* partial_inplace */
979 0xffffffff, /* src_mask */
980 0xffffffff, /* dst_mask */
981 FALSE), /* pcrel_offset */
983 HOWTO (R_M32R_GOTOFF, /* type */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
987 FALSE, /* pc_relative */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 bfd_elf_generic_reloc, /* special_function */
991 "R_M32R_GOTOFF", /* name */
992 FALSE, /* partial_inplace */
993 0xffffff, /* src_mask */
994 0xffffff, /* dst_mask */
995 FALSE), /* pcrel_offset */
997 /* An PC Relative 24-bit relocation used when setting PIC offset
999 HOWTO (R_M32R_GOTPC24, /* type */
1001 2, /* size (0 = byte, 1 = short, 2 = long) */
1003 TRUE, /* pc_relative */
1005 complain_overflow_unsigned, /* complain_on_overflow */
1006 bfd_elf_generic_reloc, /* special_function */
1007 "R_M32R_GOTPC24", /* name */
1008 FALSE, /* partial_inplace */
1009 0xffffff, /* src_mask */
1010 0xffffff, /* dst_mask */
1011 TRUE), /* pcrel_offset */
1013 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1015 HOWTO (R_M32R_GOT16_HI_ULO, /* type */
1016 16, /* rightshift */
1017 2, /* size (0 = byte, 1 = short, 2 = long) */
1019 FALSE, /* pc_relative */
1021 complain_overflow_dont, /* complain_on_overflow */
1022 bfd_elf_generic_reloc, /* special_function */
1023 "R_M32R_GOT16_HI_ULO", /* name */
1024 FALSE, /* partial_inplace */
1025 0x0000ffff, /* src_mask */
1026 0x0000ffff, /* dst_mask */
1027 FALSE), /* pcrel_offset */
1029 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1031 HOWTO (R_M32R_GOT16_HI_SLO, /* type */
1032 16, /* rightshift */
1033 2, /* size (0 = byte, 1 = short, 2 = long) */
1035 FALSE, /* pc_relative */
1037 complain_overflow_dont, /* complain_on_overflow */
1038 bfd_elf_generic_reloc, /* special_function */
1039 "R_M32R_GOT16_HI_SLO", /* name */
1040 FALSE, /* partial_inplace */
1041 0x0000ffff, /* src_mask */
1042 0x0000ffff, /* dst_mask */
1043 FALSE), /* pcrel_offset */
1045 /* Like R_M32R_LO16, but referring to the GOT table entry for
1047 HOWTO (R_M32R_GOT16_LO, /* type */
1049 2, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE, /* pc_relative */
1053 complain_overflow_dont, /* complain_on_overflow */
1054 bfd_elf_generic_reloc, /* special_function */
1055 "R_M32R_GOT16_LO", /* name */
1056 FALSE, /* partial_inplace */
1057 0x0000ffff, /* src_mask */
1058 0x0000ffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1061 /* An PC Relative relocation used when setting PIC offset table register.
1062 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1064 HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
1065 16, /* rightshift */
1066 2, /* size (0 = byte, 1 = short, 2 = long) */
1068 FALSE, /* pc_relative */
1070 complain_overflow_dont, /* complain_on_overflow */
1071 bfd_elf_generic_reloc, /* special_function */
1072 "R_M32R_GOTPC_HI_ULO", /* name */
1073 FALSE, /* partial_inplace */
1074 0x0000ffff, /* src_mask */
1075 0x0000ffff, /* dst_mask */
1076 TRUE), /* pcrel_offset */
1078 /* An PC Relative relocation used when setting PIC offset table register.
1079 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1081 HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
1082 16, /* rightshift */
1083 2, /* size (0 = byte, 1 = short, 2 = long) */
1085 FALSE, /* pc_relative */
1087 complain_overflow_dont, /* complain_on_overflow */
1088 bfd_elf_generic_reloc, /* special_function */
1089 "R_M32R_GOTPC_HI_SLO", /* name */
1090 FALSE, /* partial_inplace */
1091 0x0000ffff, /* src_mask */
1092 0x0000ffff, /* dst_mask */
1093 TRUE), /* pcrel_offset */
1095 /* An PC Relative relocation used when setting PIC offset table register.
1096 Like R_M32R_LO16, but referring to the GOT table entry for
1098 HOWTO (R_M32R_GOTPC_LO, /* type */
1100 2, /* size (0 = byte, 1 = short, 2 = long) */
1102 FALSE, /* pc_relative */
1104 complain_overflow_dont, /* complain_on_overflow */
1105 bfd_elf_generic_reloc, /* special_function */
1106 "R_M32R_GOTPC_LO", /* name */
1107 FALSE, /* partial_inplace */
1108 0x0000ffff, /* src_mask */
1109 0x0000ffff, /* dst_mask */
1110 TRUE), /* pcrel_offset */
1112 HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
1113 16, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE, /* pc_relative */
1118 complain_overflow_dont, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_M32R_GOTOFF_HI_ULO",/* name */
1121 FALSE, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1126 HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE, /* pc_relative */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_M32R_GOTOFF_HI_SLO",/* name */
1135 FALSE, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 HOWTO (R_M32R_GOTOFF_LO, /* type */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1144 FALSE, /* pc_relative */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_M32R_GOTOFF_LO", /* name */
1149 FALSE, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1155 /* Map BFD reloc types to M32R ELF reloc types. */
1157 struct m32r_reloc_map
1159 bfd_reloc_code_real_type bfd_reloc_val;
1160 unsigned char elf_reloc_val;
1163 #ifdef USE_M32R_OLD_RELOC
1164 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1166 { BFD_RELOC_NONE, R_M32R_NONE },
1167 { BFD_RELOC_16, R_M32R_16 },
1168 { BFD_RELOC_32, R_M32R_32 },
1169 { BFD_RELOC_M32R_24, R_M32R_24 },
1170 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1171 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1172 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1173 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1174 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1175 { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1176 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1177 { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1178 { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1181 static const struct m32r_reloc_map m32r_reloc_map[] =
1183 { BFD_RELOC_NONE, R_M32R_NONE },
1184 { BFD_RELOC_16, R_M32R_16_RELA },
1185 { BFD_RELOC_32, R_M32R_32_RELA },
1186 { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1187 { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1188 { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1189 { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1190 { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1191 { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1192 { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1193 { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1194 { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1195 { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1197 { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1198 { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1199 { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1200 { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1201 { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1202 { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1203 { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1204 { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1205 { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1206 { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1207 { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1208 { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1209 { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1210 { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1211 { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1212 { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1213 { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1217 static reloc_howto_type *
1218 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1219 bfd_reloc_code_real_type code)
1223 #ifdef USE_M32R_OLD_RELOC
1225 i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1227 if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1228 return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1230 #else /* ! USE_M32R_OLD_RELOC */
1233 i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1235 if (m32r_reloc_map[i].bfd_reloc_val == code)
1236 return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1242 /* Set the howto pointer for an M32R ELF reloc. */
1245 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1247 Elf_Internal_Rela *dst)
1249 unsigned int r_type;
1251 r_type = ELF32_R_TYPE (dst->r_info);
1252 BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1253 cache_ptr->howto = &m32r_elf_howto_table[r_type];
1257 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1259 Elf_Internal_Rela *dst)
1261 BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1262 || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1263 && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1264 cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1268 /* Given a BFD section, try to locate the corresponding ELF section
1272 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1276 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1278 *retval = SHN_M32R_SCOMMON;
1284 /* M32R ELF uses two common sections. One is the usual one, and the other
1285 is for small objects. All the small objects are kept together, and then
1286 referenced via one register, which yields faster assembler code. It is
1287 up to the compiler to emit an instruction to load the register with
1288 _SDA_BASE. This is what we use for the small common section. This
1289 approach is copied from elf32-mips.c. */
1290 static asection m32r_elf_scom_section;
1291 static asymbol m32r_elf_scom_symbol;
1292 static asymbol *m32r_elf_scom_symbol_ptr;
1294 /* Handle the special M32R section numbers that a symbol may use. */
1297 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1299 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1301 switch (elfsym->internal_elf_sym.st_shndx)
1303 case SHN_M32R_SCOMMON:
1304 if (m32r_elf_scom_section.name == NULL)
1306 /* Initialize the small common section. */
1307 m32r_elf_scom_section.name = ".scommon";
1308 m32r_elf_scom_section.flags = SEC_IS_COMMON;
1309 m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1310 m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1311 m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1312 m32r_elf_scom_symbol.name = ".scommon";
1313 m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1314 m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1315 m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1317 asym->section = &m32r_elf_scom_section;
1318 asym->value = elfsym->internal_elf_sym.st_size;
1323 /* Hook called by the linker routine which adds symbols from an object
1324 file. We must handle the special M32R section numbers here.
1325 We also keep watching for whether we need to create the sdata special
1329 m32r_elf_add_symbol_hook (bfd *abfd,
1330 struct bfd_link_info *info,
1331 Elf_Internal_Sym *sym,
1333 flagword *flagsp ATTRIBUTE_UNUSED,
1337 if (! info->relocatable
1338 && (*namep)[0] == '_' && (*namep)[1] == 'S'
1339 && strcmp (*namep, "_SDA_BASE_") == 0
1340 && is_elf_hash_table (info->hash))
1342 /* This is simpler than using _bfd_elf_create_linker_section
1343 (our needs are simpler than ppc's needs). Also
1344 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1345 section already exists a new one is created that follows it which
1346 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1347 struct elf_link_hash_entry *h;
1348 struct bfd_link_hash_entry *bh;
1349 asection *s = bfd_get_section_by_name (abfd, ".sdata");
1351 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1354 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1355 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1357 s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1361 bfd_set_section_alignment (abfd, s, 2);
1364 bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1365 FALSE, FALSE, FALSE);
1367 if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1368 && !(_bfd_generic_link_add_one_symbol (info,
1376 get_elf_backend_data (abfd)->collect,
1379 h = (struct elf_link_hash_entry *) bh;
1380 h->type = STT_OBJECT;
1383 switch (sym->st_shndx)
1385 case SHN_M32R_SCOMMON:
1386 *secp = bfd_make_section_old_way (abfd, ".scommon");
1387 (*secp)->flags |= SEC_IS_COMMON;
1388 *valp = sym->st_size;
1395 /* We have to figure out the SDA_BASE value, so that we can adjust the
1396 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1397 BFD. If we can't find it, we're stuck. We cache it in the ELF
1398 target data. We don't need to adjust the symbol value for an
1399 external symbol if we are producing relocatable output. */
1401 static bfd_reloc_status_type
1402 m32r_elf_final_sda_base (bfd *output_bfd,
1403 struct bfd_link_info *info,
1404 const char **error_message,
1407 if (elf_gp (output_bfd) == 0)
1409 struct bfd_link_hash_entry *h;
1411 h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1412 if (h != NULL && h->type == bfd_link_hash_defined)
1413 elf_gp (output_bfd) = (h->u.def.value
1414 + h->u.def.section->output_section->vma
1415 + h->u.def.section->output_offset);
1418 /* Only get the error once. */
1419 *psb = elf_gp (output_bfd) = 4;
1421 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1422 return bfd_reloc_dangerous;
1425 *psb = elf_gp (output_bfd);
1426 return bfd_reloc_ok;
1429 /* Return size of a PLT entry. */
1430 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1432 /* The m32r linker needs to keep track of the number of relocs that it
1433 decides to copy in check_relocs for each symbol. This is so that
1434 it can discard PC relative relocs if it doesn't need them when
1435 linking with -Bsymbolic. We store the information in a field
1436 extending the regular ELF linker hash table. */
1438 /* This structure keeps track of the number of PC relative relocs we
1439 have copied for a given symbol. */
1441 struct elf_m32r_pcrel_relocs_copied
1444 struct elf_m32r_pcrel_relocs_copied *next;
1445 /* A section in dynobj. */
1447 /* Number of relocs copied in this section. */
1448 bfd_size_type count;
1451 /* The sh linker needs to keep track of the number of relocs that it
1452 decides to copy as dynamic relocs in check_relocs for each symbol.
1453 This is so that it can later discard them if they are found to be
1454 unnecessary. We store the information in a field extending the
1455 regular ELF linker hash table. */
1457 struct elf_m32r_dyn_relocs
1459 struct elf_m32r_dyn_relocs *next;
1461 /* The input section of the reloc. */
1464 /* Total number of relocs copied for the input section. */
1465 bfd_size_type count;
1467 /* Number of pc-relative relocs copied for the input section. */
1468 bfd_size_type pc_count;
1472 /* m32r ELF linker hash entry. */
1474 struct elf_m32r_link_hash_entry
1476 struct elf_link_hash_entry root;
1478 /* Track dynamic relocs copied for this symbol. */
1479 struct elf_m32r_dyn_relocs *dyn_relocs;
1482 /* m32r ELF linker hash table. */
1484 struct elf_m32r_link_hash_table
1486 struct elf_link_hash_table root;
1488 /* Short-cuts to get to dynamic linker sections. */
1497 /* Small local sym to section mapping cache. */
1498 struct sym_sec_cache sym_sec;
1501 /* Traverse an m32r ELF linker hash table. */
1503 #define m32r_elf_link_hash_traverse(table, func, info) \
1504 (elf_link_hash_traverse \
1506 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1509 /* Get the m32r ELF linker hash table from a link_info structure. */
1512 #define m32r_elf_hash_table(p) \
1513 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1515 /* Create an entry in an m32r ELF linker hash table. */
1517 static struct bfd_hash_entry *
1518 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1519 struct bfd_hash_table *table,
1522 struct elf_m32r_link_hash_entry *ret =
1523 (struct elf_m32r_link_hash_entry *) entry;
1525 /* Allocate the structure if it has not already been allocated by a
1528 ret = bfd_hash_allocate (table,
1529 sizeof (struct elf_m32r_link_hash_entry));
1533 /* Call the allocation method of the superclass. */
1534 ret = ((struct elf_m32r_link_hash_entry *)
1535 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1539 struct elf_m32r_link_hash_entry *eh;
1541 eh = (struct elf_m32r_link_hash_entry *) ret;
1542 eh->dyn_relocs = NULL;
1545 return (struct bfd_hash_entry *) ret;
1548 /* Create an m32r ELF linker hash table. */
1550 static struct bfd_link_hash_table *
1551 m32r_elf_link_hash_table_create (bfd *abfd)
1553 struct elf_m32r_link_hash_table *ret;
1554 bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1556 ret = bfd_malloc (amt);
1560 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
1561 m32r_elf_link_hash_newfunc))
1568 ret->sgotplt = NULL;
1569 ret->srelgot = NULL;
1571 ret->srelplt = NULL;
1572 ret->sdynbss = NULL;
1573 ret->srelbss = NULL;
1574 ret->sym_sec.abfd = NULL;
1576 return &ret->root.root;
1579 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1580 shortcuts to them in our hash table. */
1583 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1585 struct elf_m32r_link_hash_table *htab;
1587 if (! _bfd_elf_create_got_section (dynobj, info))
1590 htab = m32r_elf_hash_table (info);
1591 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1592 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1593 if (! htab->sgot || ! htab->sgotplt)
1596 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1601 | SEC_LINKER_CREATED
1603 if (htab->srelgot == NULL
1604 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1610 /* Create dynamic sections when linking against a dynamic object. */
1613 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1615 struct elf_m32r_link_hash_table *htab;
1616 flagword flags, pltflags;
1618 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1619 int ptralign = 2; /* 32bit */
1621 htab = m32r_elf_hash_table (info);
1623 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1624 .rel[a].bss sections. */
1625 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1626 | SEC_LINKER_CREATED);
1629 pltflags |= SEC_CODE;
1630 if (bed->plt_not_loaded)
1631 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1632 if (bed->plt_readonly)
1633 pltflags |= SEC_READONLY;
1635 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1638 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1641 if (bed->want_plt_sym)
1643 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1645 struct bfd_link_hash_entry *bh = NULL;
1646 struct elf_link_hash_entry *h;
1648 if (! (_bfd_generic_link_add_one_symbol
1649 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1650 (bfd_vma) 0, NULL, FALSE,
1651 get_elf_backend_data (abfd)->collect, &bh)))
1653 h = (struct elf_link_hash_entry *) bh;
1655 h->type = STT_OBJECT;
1658 && ! bfd_elf_link_record_dynamic_symbol (info, h))
1662 s = bfd_make_section_with_flags (abfd,
1663 bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1664 flags | SEC_READONLY);
1667 || ! bfd_set_section_alignment (abfd, s, ptralign))
1670 if (htab->sgot == NULL
1671 && ! create_got_section (abfd, info))
1675 const char *secname;
1680 for (sec = abfd->sections; sec; sec = sec->next)
1682 secflags = bfd_get_section_flags (abfd, sec);
1683 if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1684 || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1686 secname = bfd_get_section_name (abfd, sec);
1687 relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1688 strcpy (relname, ".rela");
1689 strcat (relname, secname);
1690 if (bfd_get_section_by_name (abfd, secname))
1692 s = bfd_make_section_with_flags (abfd, relname,
1693 flags | SEC_READONLY);
1695 || ! bfd_set_section_alignment (abfd, s, ptralign))
1700 if (bed->want_dynbss)
1702 /* The .dynbss section is a place to put symbols which are defined
1703 by dynamic objects, are referenced by regular objects, and are
1704 not functions. We must allocate space for them in the process
1705 image and use a R_*_COPY reloc to tell the dynamic linker to
1706 initialize them at run time. The linker script puts the .dynbss
1707 section into the .bss section of the final image. */
1708 s = bfd_make_section_with_flags (abfd, ".dynbss",
1709 SEC_ALLOC | SEC_LINKER_CREATED);
1713 /* The .rel[a].bss section holds copy relocs. This section is not
1714 normally needed. We need to create it here, though, so that the
1715 linker will map it to an output section. We can't just create it
1716 only if we need it, because we will not know whether we need it
1717 until we have seen all the input files, and the first time the
1718 main linker code calls BFD after examining all the input files
1719 (size_dynamic_sections) the input sections have already been
1720 mapped to the output sections. If the section turns out not to
1721 be needed, we can discard it later. We will never need this
1722 section when generating a shared object, since they do not use
1726 s = bfd_make_section_with_flags (abfd,
1727 (bed->default_use_rela_p
1728 ? ".rela.bss" : ".rel.bss"),
1729 flags | SEC_READONLY);
1732 || ! bfd_set_section_alignment (abfd, s, ptralign))
1740 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1743 m32r_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
1744 struct elf_link_hash_entry *dir,
1745 struct elf_link_hash_entry *ind)
1747 struct elf_m32r_link_hash_entry * edir;
1748 struct elf_m32r_link_hash_entry * eind;
1750 edir = (struct elf_m32r_link_hash_entry *) dir;
1751 eind = (struct elf_m32r_link_hash_entry *) ind;
1753 if (eind->dyn_relocs != NULL)
1755 if (edir->dyn_relocs != NULL)
1757 struct elf_m32r_dyn_relocs **pp;
1758 struct elf_m32r_dyn_relocs *p;
1760 if (ind->root.type == bfd_link_hash_indirect)
1763 /* Add reloc counts against the weak sym to the strong sym
1764 list. Merge any entries against the same section. */
1765 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1767 struct elf_m32r_dyn_relocs *q;
1769 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1770 if (q->sec == p->sec)
1772 q->pc_count += p->pc_count;
1773 q->count += p->count;
1780 *pp = edir->dyn_relocs;
1783 edir->dyn_relocs = eind->dyn_relocs;
1784 eind->dyn_relocs = NULL;
1787 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
1791 /* Adjust a symbol defined by a dynamic object and referenced by a
1792 regular object. The current definition is in some section of the
1793 dynamic object, but we're not including those sections. We have to
1794 change the definition to something the rest of the link can
1798 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1799 struct elf_link_hash_entry *h)
1801 struct elf_m32r_link_hash_table *htab;
1802 struct elf_m32r_link_hash_entry *eh;
1803 struct elf_m32r_dyn_relocs *p;
1806 unsigned int power_of_two;
1809 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1812 dynobj = elf_hash_table (info)->dynobj;
1814 /* Make sure we know what is going on here. */
1815 BFD_ASSERT (dynobj != NULL
1817 || h->u.weakdef != NULL
1820 && !h->def_regular)));
1822 /* If this is a function, put it in the procedure linkage table. We
1823 will fill in the contents of the procedure linkage table later,
1824 when we know the address of the .got section. */
1825 if (h->type == STT_FUNC
1831 && h->root.type != bfd_link_hash_undefweak
1832 && h->root.type != bfd_link_hash_undefined)
1834 /* This case can occur if we saw a PLT reloc in an input
1835 file, but the symbol was never referred to by a dynamic
1836 object. In such a case, we don't actually need to build
1837 a procedure linkage table, and we can just do a PCREL
1839 h->plt.offset = (bfd_vma) -1;
1846 h->plt.offset = (bfd_vma) -1;
1848 /* If this is a weak symbol, and there is a real definition, the
1849 processor independent code will have arranged for us to see the
1850 real definition first, and we can just use the same value. */
1851 if (h->u.weakdef != NULL)
1853 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1854 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1855 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1856 h->root.u.def.value = h->u.weakdef->root.u.def.value;
1860 /* This is a reference to a symbol defined by a dynamic object which
1861 is not a function. */
1863 /* If we are creating a shared library, we must presume that the
1864 only references to the symbol are via the global offset table.
1865 For such cases we need not do anything here; the relocations will
1866 be handled correctly by relocate_section. */
1870 /* If there are no references to this symbol that do not use the
1871 GOT, we don't need to generate a copy reloc. */
1872 if (!h->non_got_ref)
1875 /* If -z nocopyreloc was given, we won't generate them either. */
1876 if (info->nocopyreloc)
1882 eh = (struct elf_m32r_link_hash_entry *) h;
1883 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1885 s = p->sec->output_section;
1886 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1890 /* If we didn't find any dynamic relocs in sections which needs the
1891 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1899 /* We must allocate the symbol in our .dynbss section, which will
1900 become part of the .bss section of the executable. There will be
1901 an entry for this symbol in the .dynsym section. The dynamic
1902 object will contain position independent code, so all references
1903 from the dynamic object to this symbol will go through the global
1904 offset table. The dynamic linker will use the .dynsym entry to
1905 determine the address it must put in the global offset table, so
1906 both the dynamic object and the regular object will refer to the
1907 same memory location for the variable. */
1909 htab = m32r_elf_hash_table (info);
1911 BFD_ASSERT (s != NULL);
1913 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1914 to copy the initial value out of the dynamic object and into the
1915 runtime process image. We need to remember the offset into the
1916 .rela.bss section we are going to use. */
1917 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1921 srel = htab->srelbss;
1922 BFD_ASSERT (srel != NULL);
1923 srel->size += sizeof (Elf32_External_Rela);
1927 /* We need to figure out the alignment required for this symbol. I
1928 have no idea how ELF linkers handle this. */
1929 power_of_two = bfd_log2 (h->size);
1930 if (power_of_two > 3)
1933 /* Apply the required alignment. */
1934 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1935 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1937 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1941 /* Define the symbol as being at this point in the section. */
1942 h->root.u.def.section = s;
1943 h->root.u.def.value = s->size;
1945 /* Increment the section size to make room for the symbol. */
1951 /* Allocate space in .plt, .got and associated reloc sections for
1955 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1957 struct bfd_link_info *info;
1958 struct elf_m32r_link_hash_table *htab;
1959 struct elf_m32r_link_hash_entry *eh;
1960 struct elf_m32r_dyn_relocs *p;
1962 if (h->root.type == bfd_link_hash_indirect)
1965 if (h->root.type == bfd_link_hash_warning)
1966 /* When warning symbols are created, they **replace** the "real"
1967 entry in the hash table, thus we never get to see the real
1968 symbol in a hash traversal. So look at it now. */
1969 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1971 info = (struct bfd_link_info *) inf;
1972 htab = m32r_elf_hash_table (info);
1974 eh = (struct elf_m32r_link_hash_entry *) h;
1976 if (htab->root.dynamic_sections_created
1977 && h->plt.refcount > 0)
1979 /* Make sure this symbol is output as a dynamic symbol.
1980 Undefined weak syms won't yet be marked as dynamic. */
1981 if (h->dynindx == -1
1982 && !h->forced_local)
1984 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1988 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
1990 asection *s = htab->splt;
1992 /* If this is the first .plt entry, make room for the special
1995 s->size += PLT_ENTRY_SIZE;
1997 h->plt.offset = s->size;
1999 /* If this symbol is not defined in a regular file, and we are
2000 not generating a shared library, then set the symbol to this
2001 location in the .plt. This is required to make function
2002 pointers compare as equal between the normal executable and
2003 the shared library. */
2007 h->root.u.def.section = s;
2008 h->root.u.def.value = h->plt.offset;
2011 /* Make room for this entry. */
2012 s->size += PLT_ENTRY_SIZE;
2014 /* We also need to make an entry in the .got.plt section, which
2015 will be placed in the .got section by the linker script. */
2016 htab->sgotplt->size += 4;
2018 /* We also need to make an entry in the .rel.plt section. */
2019 htab->srelplt->size += sizeof (Elf32_External_Rela);
2023 h->plt.offset = (bfd_vma) -1;
2029 h->plt.offset = (bfd_vma) -1;
2033 if (h->got.refcount > 0)
2038 /* Make sure this symbol is output as a dynamic symbol.
2039 Undefined weak syms won't yet be marked as dynamic. */
2040 if (h->dynindx == -1
2041 && !h->forced_local)
2043 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2049 h->got.offset = s->size;
2051 dyn = htab->root.dynamic_sections_created;
2052 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2053 htab->srelgot->size += sizeof (Elf32_External_Rela);
2056 h->got.offset = (bfd_vma) -1;
2058 if (eh->dyn_relocs == NULL)
2061 /* In the shared -Bsymbolic case, discard space allocated for
2062 dynamic pc-relative relocs against symbols which turn out to be
2063 defined in regular objects. For the normal shared case, discard
2064 space for pc-relative relocs that have become local due to symbol
2065 visibility changes. */
2073 struct elf_m32r_dyn_relocs **pp;
2075 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2077 p->count -= p->pc_count;
2088 /* For the non-shared case, discard space for relocs against
2089 symbols which turn out to need copy relocs or are not
2095 || (htab->root.dynamic_sections_created
2096 && (h->root.type == bfd_link_hash_undefweak
2097 || h->root.type == bfd_link_hash_undefined))))
2099 /* Make sure this symbol is output as a dynamic symbol.
2100 Undefined weak syms won't yet be marked as dynamic. */
2101 if (h->dynindx == -1
2102 && !h->forced_local)
2104 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2108 /* If that succeeded, we know we'll be keeping all the
2110 if (h->dynindx != -1)
2114 eh->dyn_relocs = NULL;
2119 /* Finally, allocate space. */
2120 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2122 asection *sreloc = elf_section_data (p->sec)->sreloc;
2123 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2129 /* Find any dynamic relocs that apply to read-only sections. */
2132 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2134 struct elf_m32r_link_hash_entry *eh;
2135 struct elf_m32r_dyn_relocs *p;
2137 if (h->root.type == bfd_link_hash_warning)
2138 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2140 eh = (struct elf_m32r_link_hash_entry *) h;
2141 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2143 asection *s = p->sec->output_section;
2145 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2147 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2149 info->flags |= DF_TEXTREL;
2151 /* Not an error, just cut short the traversal. */
2158 /* Set the sizes of the dynamic sections. */
2161 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2162 struct bfd_link_info *info)
2164 struct elf_m32r_link_hash_table *htab;
2171 printf ("m32r_elf_size_dynamic_sections()\n");
2174 htab = m32r_elf_hash_table (info);
2175 dynobj = htab->root.dynobj;
2176 BFD_ASSERT (dynobj != NULL);
2178 if (htab->root.dynamic_sections_created)
2180 /* Set the contents of the .interp section to the interpreter. */
2181 if (info->executable)
2183 s = bfd_get_section_by_name (dynobj, ".interp");
2184 BFD_ASSERT (s != NULL);
2185 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2186 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2190 /* Set up .got offsets for local syms, and space for local dynamic
2192 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2194 bfd_signed_vma *local_got;
2195 bfd_signed_vma *end_local_got;
2196 bfd_size_type locsymcount;
2197 Elf_Internal_Shdr *symtab_hdr;
2200 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2203 for (s = ibfd->sections; s != NULL; s = s->next)
2205 struct elf_m32r_dyn_relocs *p;
2207 for (p = ((struct elf_m32r_dyn_relocs *)
2208 elf_section_data (s)->local_dynrel);
2212 if (! bfd_is_abs_section (p->sec)
2213 && bfd_is_abs_section (p->sec->output_section))
2215 /* Input section has been discarded, either because
2216 it is a copy of a linkonce section or due to
2217 linker script /DISCARD/, so we'll be discarding
2220 else if (p->count != 0)
2222 srel = elf_section_data (p->sec)->sreloc;
2223 srel->size += p->count * sizeof (Elf32_External_Rela);
2224 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2225 info->flags |= DF_TEXTREL;
2230 local_got = elf_local_got_refcounts (ibfd);
2234 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2235 locsymcount = symtab_hdr->sh_info;
2236 end_local_got = local_got + locsymcount;
2238 srel = htab->srelgot;
2239 for (; local_got < end_local_got; ++local_got)
2243 *local_got = s->size;
2246 srel->size += sizeof (Elf32_External_Rela);
2249 *local_got = (bfd_vma) -1;
2253 /* Allocate global sym .plt and .got entries, and space for global
2254 sym dynamic relocs. */
2255 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2257 /* We now have determined the sizes of the various dynamic sections.
2258 Allocate memory for them. */
2260 for (s = dynobj->sections; s != NULL; s = s->next)
2262 if ((s->flags & SEC_LINKER_CREATED) == 0)
2267 || s == htab->sgotplt
2268 || s == htab->sdynbss)
2270 /* Strip this section if we don't need it; see the
2273 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2275 if (s->size != 0 && s != htab->srelplt)
2278 /* We use the reloc_count field as a counter if we need
2279 to copy relocs into the output file. */
2283 /* It's not one of our sections, so don't allocate space. */
2288 /* If we don't need this section, strip it from the
2289 output file. This is mostly to handle .rela.bss and
2290 .rela.plt. We must create both sections in
2291 create_dynamic_sections, because they must be created
2292 before the linker maps input sections to output
2293 sections. The linker does that before
2294 adjust_dynamic_symbol is called, and it is that
2295 function which decides whether anything needs to go
2296 into these sections. */
2297 s->flags |= SEC_EXCLUDE;
2301 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2304 /* Allocate memory for the section contents. We use bfd_zalloc
2305 here in case unused entries are not reclaimed before the
2306 section's contents are written out. This should not happen,
2307 but this way if it does, we get a R_M32R_NONE reloc instead
2309 s->contents = bfd_zalloc (dynobj, s->size);
2310 if (s->contents == NULL)
2314 if (htab->root.dynamic_sections_created)
2316 /* Add some entries to the .dynamic section. We fill in the
2317 values later, in m32r_elf_finish_dynamic_sections, but we
2318 must add the entries now so that we get the correct size for
2319 the .dynamic section. The DT_DEBUG entry is filled in by the
2320 dynamic linker and used by the debugger. */
2321 #define add_dynamic_entry(TAG, VAL) \
2322 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2324 if (info->executable)
2326 if (! add_dynamic_entry (DT_DEBUG, 0))
2330 if (htab->splt->size != 0)
2332 if (! add_dynamic_entry (DT_PLTGOT, 0)
2333 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2334 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2335 || ! add_dynamic_entry (DT_JMPREL, 0))
2341 if (! add_dynamic_entry (DT_RELA, 0)
2342 || ! add_dynamic_entry (DT_RELASZ, 0)
2343 || ! add_dynamic_entry (DT_RELAENT,
2344 sizeof (Elf32_External_Rela)))
2347 /* If any dynamic relocs apply to a read-only section,
2348 then we need a DT_TEXTREL entry. */
2349 if ((info->flags & DF_TEXTREL) == 0)
2350 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2353 if ((info->flags & DF_TEXTREL) != 0)
2355 if (! add_dynamic_entry (DT_TEXTREL, 0))
2360 #undef add_dynamic_entry
2365 /* Relocate an M32R/D ELF section.
2366 There is some attempt to make this function usable for many architectures,
2367 both for RELA and REL type relocs, if only to serve as a learning tool.
2369 The RELOCATE_SECTION function is called by the new ELF backend linker
2370 to handle the relocations for a section.
2372 The relocs are always passed as Rela structures; if the section
2373 actually uses Rel structures, the r_addend field will always be
2376 This function is responsible for adjust the section contents as
2377 necessary, and (if using Rela relocs and generating a
2378 relocatable output file) adjusting the reloc addend as
2381 This function does not have to worry about setting the reloc
2382 address or the reloc symbol index.
2384 LOCAL_SYMS is a pointer to the swapped in local symbols.
2386 LOCAL_SECTIONS is an array giving the section in the input file
2387 corresponding to the st_shndx field of each local symbol.
2389 The global hash table entry for the global symbols can be found
2390 via elf_sym_hashes (input_bfd).
2392 When generating relocatable output, this function must handle
2393 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2394 going to be the section symbol corresponding to the output
2395 section, which means that the addend must be adjusted
2399 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2400 struct bfd_link_info *info,
2402 asection *input_section,
2404 Elf_Internal_Rela *relocs,
2405 Elf_Internal_Sym *local_syms,
2406 asection **local_sections)
2408 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2409 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2410 Elf_Internal_Rela *rel, *relend;
2411 /* Assume success. */
2412 bfd_boolean ret = TRUE;
2414 struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2416 bfd_vma *local_got_offsets;
2417 asection *sgot, *splt, *sreloc;
2418 bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2420 dynobj = htab->root.dynobj;
2421 local_got_offsets = elf_local_got_offsets (input_bfd);
2428 relend = relocs + input_section->reloc_count;
2429 for (; rel < relend; rel++)
2432 reloc_howto_type *howto;
2433 unsigned long r_symndx;
2434 struct elf_link_hash_entry *h;
2435 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2436 ensure it's zero (we use REL relocs, not RELA). Therefore this
2437 should be assigning zero to `addend', but for clarity we use
2439 bfd_vma addend = rel->r_addend;
2440 bfd_vma offset = rel->r_offset;
2441 Elf_Internal_Sym *sym;
2443 const char *sym_name;
2444 bfd_reloc_status_type r;
2445 const char *errmsg = NULL;
2446 bfd_boolean use_rel = FALSE;
2449 r_type = ELF32_R_TYPE (rel->r_info);
2450 if (r_type < 0 || r_type >= (int) R_M32R_max)
2452 (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2455 bfd_set_error (bfd_error_bad_value);
2460 if ( r_type == R_M32R_GNU_VTENTRY
2461 || r_type == R_M32R_GNU_VTINHERIT
2462 || r_type == R_M32R_NONE
2463 || r_type == R_M32R_RELA_GNU_VTENTRY
2464 || r_type == R_M32R_RELA_GNU_VTINHERIT)
2467 if (r_type <= R_M32R_GNU_VTENTRY)
2470 howto = m32r_elf_howto_table + r_type;
2471 r_symndx = ELF32_R_SYM (rel->r_info);
2473 if (info->relocatable && use_rel)
2475 /* This is a relocatable link. We don't have to change
2476 anything, unless the reloc is against a section symbol,
2477 in which case we have to adjust according to where the
2478 section symbol winds up in the output section. */
2480 if (r_symndx >= symtab_hdr->sh_info)
2481 /* External symbol. */
2485 sym = local_syms + r_symndx;
2486 sym_name = "<local symbol>";
2487 /* STT_SECTION: symbol is associated with a section. */
2488 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2489 /* Symbol isn't associated with a section. Nothing to do. */
2492 sec = local_sections[r_symndx];
2493 addend += sec->output_offset + sym->st_value;
2495 /* If partial_inplace, we need to store any additional addend
2496 back in the section. */
2497 if (! howto->partial_inplace)
2499 /* ??? Here is a nice place to call a special_function
2501 if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2502 r = _bfd_relocate_contents (howto, input_bfd,
2503 addend, contents + offset);
2506 Elf_Internal_Rela *lorel;
2508 /* We allow an arbitrary number of HI16 relocs before the
2509 LO16 reloc. This permits gcc to emit the HI and LO relocs
2511 for (lorel = rel + 1;
2513 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2514 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2518 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2520 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2525 r = _bfd_relocate_contents (howto, input_bfd,
2526 addend, contents + offset);
2533 /* This is a final link. */
2538 if (r_symndx < symtab_hdr->sh_info)
2541 sym = local_syms + r_symndx;
2542 sec = local_sections[r_symndx];
2543 sym_name = "<local symbol>";
2547 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2548 addend = rel->r_addend;
2550 if (info->relocatable)
2552 /* This is a relocatable link. We don't have to change
2553 anything, unless the reloc is against a section symbol,
2554 in which case we have to adjust according to where the
2555 section symbol winds up in the output section. */
2556 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2557 rel->r_addend += sec->output_offset + sym->st_value;
2564 relocation = (sec->output_section->vma
2565 + sec->output_offset
2571 /* External symbol. */
2572 if (info->relocatable && !use_rel)
2575 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2576 while (h->root.type == bfd_link_hash_indirect
2577 || h->root.type == bfd_link_hash_warning)
2578 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2579 sym_name = h->root.root.string;
2581 if (h->root.type == bfd_link_hash_defined
2582 || h->root.type == bfd_link_hash_defweak)
2585 sec = h->root.u.def.section;
2587 dyn = htab->root.dynamic_sections_created;
2588 sec = h->root.u.def.section;
2589 if (r_type == R_M32R_GOTPC24
2590 || (r_type == R_M32R_GOTPC_HI_ULO
2591 || r_type == R_M32R_GOTPC_HI_SLO
2592 || r_type == R_M32R_GOTPC_LO)
2593 || (r_type == R_M32R_26_PLTREL
2594 && h->plt.offset != (bfd_vma) -1)
2595 || ((r_type == R_M32R_GOT24
2596 || r_type == R_M32R_GOT16_HI_ULO
2597 || r_type == R_M32R_GOT16_HI_SLO
2598 || r_type == R_M32R_GOT16_LO)
2599 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2602 || (! info->symbolic && h->dynindx != -1)
2603 || !h->def_regular))
2605 && ((! info->symbolic && h->dynindx != -1)
2607 && (((r_type == R_M32R_16_RELA
2608 || r_type == R_M32R_32_RELA
2609 || r_type == R_M32R_24_RELA
2610 || r_type == R_M32R_HI16_ULO_RELA
2611 || r_type == R_M32R_HI16_SLO_RELA
2612 || r_type == R_M32R_LO16_RELA)
2613 && !h->forced_local)
2614 || r_type == R_M32R_10_PCREL_RELA
2615 || r_type == R_M32R_18_PCREL_RELA
2616 || r_type == R_M32R_26_PCREL_RELA)
2617 && ((input_section->flags & SEC_ALLOC) != 0
2618 /* DWARF will emit R_M32R_16(24,32) relocations
2619 in its sections against symbols defined
2620 externally in shared libraries. We can't do
2621 anything with them here. */
2622 || ((input_section->flags & SEC_DEBUGGING) != 0
2623 && h->def_dynamic))))
2625 /* In these cases, we don't need the relocation
2626 value. We check specially because in some
2627 obscure cases sec->output_section will be NULL. */
2630 else if (sec->output_section == NULL)
2632 (*_bfd_error_handler)
2633 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
2634 bfd_get_filename (input_bfd), h->root.root.string,
2635 bfd_get_section_name (input_bfd, input_section));
2640 relocation = (h->root.u.def.value
2641 + sec->output_section->vma
2642 + sec->output_offset);
2644 else if (h->root.type == bfd_link_hash_undefweak)
2646 else if (info->unresolved_syms_in_objects == RM_IGNORE
2647 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2651 if (! ((*info->callbacks->undefined_symbol)
2652 (info, h->root.root.string, input_bfd,
2653 input_section, offset,
2654 (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2655 || ELF_ST_VISIBILITY (h->other)))))
2661 /* Sanity check the address. */
2662 if (offset > high_address)
2664 r = bfd_reloc_outofrange;
2668 switch ((int) r_type)
2671 /* Relocation is relative to the start of the global offset
2672 table (for ld24 rx, #uimm24). eg access at label+addend
2674 ld24 rx. #label@GOTOFF + addend
2677 BFD_ASSERT (sgot != NULL);
2679 relocation = -(relocation - sgot->output_section->vma);
2680 rel->r_addend = -rel->r_addend;
2683 case R_M32R_GOTOFF_HI_ULO:
2684 case R_M32R_GOTOFF_HI_SLO:
2685 case R_M32R_GOTOFF_LO:
2686 BFD_ASSERT (sgot != NULL);
2688 relocation -= sgot->output_section->vma;
2690 if ((r_type == R_M32R_GOTOFF_HI_SLO)
2691 && ((relocation + rel->r_addend) & 0x8000))
2692 rel->r_addend += 0x10000;
2695 case R_M32R_GOTPC24:
2696 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2697 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2699 relocation = sgot->output_section->vma;
2702 case R_M32R_GOTPC_HI_ULO:
2703 case R_M32R_GOTPC_HI_SLO:
2704 case R_M32R_GOTPC_LO:
2706 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2708 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2709 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2712 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2713 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2715 relocation = sgot->output_section->vma;
2716 relocation -= (input_section->output_section->vma
2717 + input_section->output_offset
2719 if ((r_type == R_M32R_GOTPC_HI_SLO)
2720 && ((relocation + rel->r_addend) & 0x8000))
2721 rel->r_addend += 0x10000;
2725 case R_M32R_GOT16_HI_ULO:
2726 case R_M32R_GOT16_HI_SLO:
2727 case R_M32R_GOT16_LO:
2730 /* Relocation is to the entry for this symbol in the global
2732 BFD_ASSERT (sgot != NULL);
2739 off = h->got.offset;
2740 BFD_ASSERT (off != (bfd_vma) -1);
2742 dyn = htab->root.dynamic_sections_created;
2743 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2750 /* This is actually a static link, or it is a
2751 -Bsymbolic link and the symbol is defined
2752 locally, or the symbol was forced to be local
2753 because of a version file. We must initialize
2754 this entry in the global offset table. Since the
2755 offset must always be a multiple of 4, we use the
2756 least significant bit to record whether we have
2757 initialized it already.
2759 When doing a dynamic link, we create a .rela.got
2760 relocation entry to initialize the value. This
2761 is done in the finish_dynamic_symbol routine. */
2766 bfd_put_32 (output_bfd, relocation,
2767 sgot->contents + off);
2772 relocation = sgot->output_offset + off;
2779 BFD_ASSERT (local_got_offsets != NULL
2780 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2782 off = local_got_offsets[r_symndx];
2784 /* The offset must always be a multiple of 4. We use
2785 the least significant bit to record whether we have
2786 already processed this entry. */
2791 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2796 Elf_Internal_Rela outrel;
2798 /* We need to generate a R_M32R_RELATIVE reloc
2799 for the dynamic linker. */
2800 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2801 BFD_ASSERT (srelgot != NULL);
2803 outrel.r_offset = (sgot->output_section->vma
2804 + sgot->output_offset
2806 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2807 outrel.r_addend = relocation;
2808 loc = srelgot->contents;
2809 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2810 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2811 ++srelgot->reloc_count;
2814 local_got_offsets[r_symndx] |= 1;
2817 relocation = sgot->output_offset + off;
2819 if ((r_type == R_M32R_GOT16_HI_SLO)
2820 && ((relocation + rel->r_addend) & 0x8000))
2821 rel->r_addend += 0x10000;
2825 case R_M32R_26_PLTREL:
2826 /* Relocation is to the entry for this symbol in the
2827 procedure linkage table. */
2829 /* The native assembler will generate a 26_PLTREL reloc
2830 for a local symbol if you assemble a call from one
2831 section to another when using -K pic. */
2835 if (h->forced_local)
2838 if (h->plt.offset == (bfd_vma) -1)
2839 /* We didn't make a PLT entry for this symbol. This
2840 happens when statically linking PIC code, or when
2841 using -Bsymbolic. */
2844 relocation = (splt->output_section->vma
2845 + splt->output_offset
2849 case R_M32R_HI16_SLO_RELA:
2850 if ((relocation + rel->r_addend) & 0x8000)
2851 rel->r_addend += 0x10000;
2854 case R_M32R_16_RELA:
2855 case R_M32R_24_RELA:
2856 case R_M32R_32_RELA:
2857 case R_M32R_18_PCREL_RELA:
2858 case R_M32R_26_PCREL_RELA:
2859 case R_M32R_HI16_ULO_RELA:
2860 case R_M32R_LO16_RELA:
2863 && (input_section->flags & SEC_ALLOC) != 0
2864 && ((r_type != R_M32R_18_PCREL_RELA
2865 && r_type != R_M32R_26_PCREL_RELA)
2868 && (! info->symbolic
2869 || !h->def_regular))))
2871 Elf_Internal_Rela outrel;
2872 bfd_boolean skip, relocate;
2875 /* When generating a shared object, these relocations
2876 are copied into the output file to be resolved at run
2882 name = (bfd_elf_string_from_elf_section
2884 elf_elfheader (input_bfd)->e_shstrndx,
2885 elf_section_data (input_section)->rel_hdr.sh_name));
2889 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2890 && strcmp (bfd_get_section_name (input_bfd,
2894 sreloc = bfd_get_section_by_name (dynobj, name);
2895 BFD_ASSERT (sreloc != NULL);
2901 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2905 if (outrel.r_offset == (bfd_vma) -1)
2907 else if (outrel.r_offset == (bfd_vma) -2)
2908 skip = relocate = TRUE;
2909 outrel.r_offset += (input_section->output_section->vma
2910 + input_section->output_offset);
2913 memset (&outrel, 0, sizeof outrel);
2914 else if (r_type == R_M32R_18_PCREL_RELA
2915 || r_type == R_M32R_26_PCREL_RELA)
2917 BFD_ASSERT (h != NULL && h->dynindx != -1);
2918 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2919 outrel.r_addend = rel->r_addend;
2923 /* h->dynindx may be -1 if this symbol was marked to
2926 || ((info->symbolic || h->dynindx == -1)
2930 outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2931 outrel.r_addend = relocation + rel->r_addend;
2935 BFD_ASSERT (h->dynindx != -1);
2936 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2937 outrel.r_addend = relocation + rel->r_addend;
2941 loc = sreloc->contents;
2942 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2943 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2944 ++sreloc->reloc_count;
2946 /* If this reloc is against an external symbol, we do
2947 not want to fiddle with the addend. Otherwise, we
2948 need to include the symbol value so that it becomes
2949 an addend for the dynamic reloc. */
2955 case (int) R_M32R_10_PCREL :
2956 r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
2958 sec, relocation, addend);
2961 case (int) R_M32R_HI16_SLO :
2962 case (int) R_M32R_HI16_ULO :
2964 Elf_Internal_Rela *lorel;
2966 /* We allow an arbitrary number of HI16 relocs before the
2967 LO16 reloc. This permits gcc to emit the HI and LO relocs
2969 for (lorel = rel + 1;
2971 && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2972 || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2976 && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2978 m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2979 contents, relocation + addend);
2983 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2985 relocation, addend);
2990 case (int) R_M32R_SDA16_RELA:
2991 case (int) R_M32R_SDA16 :
2995 BFD_ASSERT (sec != NULL);
2996 name = bfd_get_section_name (abfd, sec);
2998 if ( strcmp (name, ".sdata") == 0
2999 || strcmp (name, ".sbss") == 0
3000 || strcmp (name, ".scommon") == 0)
3003 bfd *out_bfd = sec->output_section->owner;
3005 r = m32r_elf_final_sda_base (out_bfd, info,
3008 if (r != bfd_reloc_ok)
3014 /* At this point `relocation' contains the object's
3016 relocation -= sda_base;
3017 /* Now it contains the offset from _SDA_BASE_. */
3021 (*_bfd_error_handler)
3022 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3026 m32r_elf_howto_table[(int) r_type].name);
3027 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3034 default : /* OLD_M32R_RELOC */
3036 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3038 relocation, addend);
3042 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3043 contents, rel->r_offset,
3044 relocation, rel->r_addend);
3050 if (r != bfd_reloc_ok)
3052 /* FIXME: This should be generic enough to go in a utility. */
3056 name = h->root.root.string;
3059 name = (bfd_elf_string_from_elf_section
3060 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3061 if (name == NULL || *name == '\0')
3062 name = bfd_section_name (input_bfd, sec);
3070 case bfd_reloc_overflow:
3071 if (! ((*info->callbacks->reloc_overflow)
3072 (info, (h ? &h->root : NULL), name, howto->name,
3073 (bfd_vma) 0, input_bfd, input_section, offset)))
3077 case bfd_reloc_undefined:
3078 if (! ((*info->callbacks->undefined_symbol)
3079 (info, name, input_bfd, input_section,
3084 case bfd_reloc_outofrange:
3085 errmsg = _("internal error: out of range error");
3088 case bfd_reloc_notsupported:
3089 errmsg = _("internal error: unsupported relocation error");
3092 case bfd_reloc_dangerous:
3093 errmsg = _("internal error: dangerous error");
3097 errmsg = _("internal error: unknown error");
3101 if (!((*info->callbacks->warning)
3102 (info, errmsg, name, input_bfd, input_section,
3113 /* Finish up dynamic symbol handling. We set the contents of various
3114 dynamic sections here. */
3117 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3118 struct bfd_link_info *info,
3119 struct elf_link_hash_entry *h,
3120 Elf_Internal_Sym *sym)
3122 struct elf_m32r_link_hash_table *htab;
3127 printf ("m32r_elf_finish_dynamic_symbol()\n");
3130 htab = m32r_elf_hash_table (info);
3131 dynobj = htab->root.dynobj;
3133 if (h->plt.offset != (bfd_vma) -1)
3141 Elf_Internal_Rela rela;
3143 /* This symbol has an entry in the procedure linkage table. Set
3146 BFD_ASSERT (h->dynindx != -1);
3149 sgot = htab->sgotplt;
3150 srela = htab->srelplt;
3151 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3153 /* Get the index in the procedure linkage table which
3154 corresponds to this symbol. This is the index of this symbol
3155 in all the symbols for which we are making plt entries. The
3156 first entry in the procedure linkage table is reserved. */
3157 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3159 /* Get the offset into the .got table of the entry that
3160 corresponds to this function. Each .got entry is 4 bytes.
3161 The first three are reserved. */
3162 got_offset = (plt_index + 3) * 4;
3164 /* Fill in the entry in the procedure linkage table. */
3167 bfd_put_32 (output_bfd,
3169 + (((sgot->output_section->vma
3170 + sgot->output_offset
3171 + got_offset) >> 16) & 0xffff)),
3172 splt->contents + h->plt.offset);
3173 bfd_put_32 (output_bfd,
3175 + ((sgot->output_section->vma
3176 + sgot->output_offset
3177 + got_offset) & 0xffff)),
3178 splt->contents + h->plt.offset + 4);
3179 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3180 splt->contents + h->plt.offset + 8);
3181 bfd_put_32 (output_bfd,
3183 + plt_index * sizeof (Elf32_External_Rela)),
3184 splt->contents + h->plt.offset + 12);
3185 bfd_put_32 (output_bfd,
3187 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3188 splt->contents + h->plt.offset + 16);
3192 bfd_put_32 (output_bfd,
3193 PLT_ENTRY_WORD0 + got_offset,
3194 splt->contents + h->plt.offset);
3195 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3196 splt->contents + h->plt.offset + 4);
3197 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3198 splt->contents + h->plt.offset + 8);
3199 bfd_put_32 (output_bfd,
3201 + plt_index * sizeof (Elf32_External_Rela)),
3202 splt->contents + h->plt.offset + 12);
3203 bfd_put_32 (output_bfd,
3205 + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3206 splt->contents + h->plt.offset + 16);
3209 /* Fill in the entry in the global offset table. */
3210 bfd_put_32 (output_bfd,
3211 (splt->output_section->vma
3212 + splt->output_offset
3214 + 12), /* same offset */
3215 sgot->contents + got_offset);
3217 /* Fill in the entry in the .rela.plt section. */
3218 rela.r_offset = (sgot->output_section->vma
3219 + sgot->output_offset
3221 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3223 loc = srela->contents;
3224 loc += plt_index * sizeof (Elf32_External_Rela);
3225 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3227 if (!h->def_regular)
3229 /* Mark the symbol as undefined, rather than as defined in
3230 the .plt section. Leave the value alone. */
3231 sym->st_shndx = SHN_UNDEF;
3235 if (h->got.offset != (bfd_vma) -1)
3239 Elf_Internal_Rela rela;
3241 /* This symbol has an entry in the global offset table. Set it
3245 srela = htab->srelgot;
3246 BFD_ASSERT (sgot != NULL && srela != NULL);
3248 rela.r_offset = (sgot->output_section->vma
3249 + sgot->output_offset
3250 + (h->got.offset &~ 1));
3252 /* If this is a -Bsymbolic link, and the symbol is defined
3253 locally, we just want to emit a RELATIVE reloc. Likewise if
3254 the symbol was forced to be local because of a version file.
3255 The entry in the global offset table will already have been
3256 initialized in the relocate_section function. */
3263 rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3264 rela.r_addend = (h->root.u.def.value
3265 + h->root.u.def.section->output_section->vma
3266 + h->root.u.def.section->output_offset);
3270 BFD_ASSERT ((h->got.offset & 1) == 0);
3271 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3272 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3276 loc = srela->contents;
3277 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3278 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3279 ++srela->reloc_count;
3285 Elf_Internal_Rela rela;
3287 /* This symbols needs a copy reloc. Set it up. */
3289 BFD_ASSERT (h->dynindx != -1
3290 && (h->root.type == bfd_link_hash_defined
3291 || h->root.type == bfd_link_hash_defweak));
3293 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3295 BFD_ASSERT (s != NULL);
3297 rela.r_offset = (h->root.u.def.value
3298 + h->root.u.def.section->output_section->vma
3299 + h->root.u.def.section->output_offset);
3300 rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3303 loc += s->reloc_count * sizeof (Elf32_External_Rela);
3304 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3308 /* Mark some specially defined symbols as absolute. */
3309 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3310 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3311 sym->st_shndx = SHN_ABS;
3317 /* Finish up the dynamic sections. */
3320 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3321 struct bfd_link_info *info)
3323 struct elf_m32r_link_hash_table *htab;
3329 printf ("m32r_elf_finish_dynamic_sections()\n");
3332 htab = m32r_elf_hash_table (info);
3333 dynobj = htab->root.dynobj;
3335 sgot = htab->sgotplt;
3336 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3338 if (htab->root.dynamic_sections_created)
3341 Elf32_External_Dyn *dyncon, *dynconend;
3343 BFD_ASSERT (sgot != NULL && sdyn != NULL);
3345 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3346 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3348 for (; dyncon < dynconend; dyncon++)
3350 Elf_Internal_Dyn dyn;
3354 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3363 s = htab->sgot->output_section;
3367 s = htab->srelplt->output_section;
3369 BFD_ASSERT (s != NULL);
3370 dyn.d_un.d_ptr = s->vma;
3371 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3375 s = htab->srelplt->output_section;
3376 BFD_ASSERT (s != NULL);
3377 dyn.d_un.d_val = s->size;
3378 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3382 /* My reading of the SVR4 ABI indicates that the
3383 procedure linkage table relocs (DT_JMPREL) should be
3384 included in the overall relocs (DT_RELA). This is
3385 what Solaris does. However, UnixWare can not handle
3386 that case. Therefore, we override the DT_RELASZ entry
3387 here to make it not include the JMPREL relocs. Since
3388 the linker script arranges for .rela.plt to follow all
3389 other relocation sections, we don't have to worry
3390 about changing the DT_RELA entry. */
3391 if (htab->srelplt != NULL)
3393 s = htab->srelplt->output_section;
3394 dyn.d_un.d_val -= s->size;
3396 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3401 /* Fill in the first entry in the procedure linkage table. */
3403 if (splt && splt->size > 0)
3407 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3408 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3409 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3410 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3411 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3416 /* addr = .got + 4 */
3417 addr = sgot->output_section->vma + sgot->output_offset + 4;
3418 bfd_put_32 (output_bfd,
3419 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3421 bfd_put_32 (output_bfd,
3422 PLT0_ENTRY_WORD1 | (addr & 0xffff),
3423 splt->contents + 4);
3424 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3425 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3426 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3429 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3434 /* Fill in the first three entries in the global offset table. */
3435 if (sgot && sgot->size > 0)
3438 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3440 bfd_put_32 (output_bfd,
3441 sdyn->output_section->vma + sdyn->output_offset,
3443 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3444 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3446 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3453 /* Set the right machine number. */
3456 m32r_elf_object_p (bfd *abfd)
3458 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3461 case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
3462 case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3463 case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3468 /* Store the machine number in the flags field. */
3471 m32r_elf_final_write_processing (bfd *abfd,
3472 bfd_boolean linker ATTRIBUTE_UNUSED)
3476 switch (bfd_get_mach (abfd))
3479 case bfd_mach_m32r: val = E_M32R_ARCH; break;
3480 case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3481 case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3484 elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3485 elf_elfheader (abfd)->e_flags |= val;
3488 /* Function to keep M32R specific file flags. */
3491 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3493 BFD_ASSERT (!elf_flags_init (abfd)
3494 || elf_elfheader (abfd)->e_flags == flags);
3496 elf_elfheader (abfd)->e_flags = flags;
3497 elf_flags_init (abfd) = TRUE;
3501 /* Merge backend specific data from an object file to the output
3502 object file when linking. */
3505 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3510 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3511 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3514 in_flags = elf_elfheader (ibfd)->e_flags;
3515 out_flags = elf_elfheader (obfd)->e_flags;
3517 if (! elf_flags_init (obfd))
3519 /* If the input is the default architecture then do not
3520 bother setting the flags for the output architecture,
3521 instead allow future merges to do this. If no future
3522 merges ever set these flags then they will retain their
3523 unitialised values, which surprise surprise, correspond
3524 to the default values. */
3525 if (bfd_get_arch_info (ibfd)->the_default)
3528 elf_flags_init (obfd) = TRUE;
3529 elf_elfheader (obfd)->e_flags = in_flags;
3531 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3532 && bfd_get_arch_info (obfd)->the_default)
3533 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3534 bfd_get_mach (ibfd));
3539 /* Check flag compatibility. */
3540 if (in_flags == out_flags)
3543 if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3545 if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
3546 || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3547 || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
3549 (*_bfd_error_handler)
3550 (_("%B: Instruction set mismatch with previous modules"), ibfd);
3552 bfd_set_error (bfd_error_bad_value);
3560 /* Display the flags field. */
3563 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3565 FILE * file = (FILE *) ptr;
3567 BFD_ASSERT (abfd != NULL && ptr != NULL);
3569 _bfd_elf_print_private_bfd_data (abfd, ptr);
3571 fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3573 switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3576 case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
3577 case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3578 case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3587 m32r_elf_gc_mark_hook (asection *sec,
3588 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3589 Elf_Internal_Rela *rel,
3590 struct elf_link_hash_entry *h,
3591 Elf_Internal_Sym *sym)
3595 switch (ELF32_R_TYPE (rel->r_info))
3597 case R_M32R_GNU_VTINHERIT:
3598 case R_M32R_GNU_VTENTRY:
3599 case R_M32R_RELA_GNU_VTINHERIT:
3600 case R_M32R_RELA_GNU_VTENTRY:
3604 switch (h->root.type)
3606 case bfd_link_hash_defined:
3607 case bfd_link_hash_defweak:
3608 return h->root.u.def.section;
3610 case bfd_link_hash_common:
3611 return h->root.u.c.p->section;
3619 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3625 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3626 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3627 asection *sec ATTRIBUTE_UNUSED,
3628 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3630 /* Update the got entry reference counts for the section being removed. */
3631 Elf_Internal_Shdr *symtab_hdr;
3632 struct elf_link_hash_entry **sym_hashes;
3633 bfd_signed_vma *local_got_refcounts;
3634 const Elf_Internal_Rela *rel, *relend;
3636 elf_section_data (sec)->local_dynrel = NULL;
3638 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3639 sym_hashes = elf_sym_hashes (abfd);
3640 local_got_refcounts = elf_local_got_refcounts (abfd);
3642 relend = relocs + sec->reloc_count;
3643 for (rel = relocs; rel < relend; rel++)
3645 unsigned long r_symndx;
3646 struct elf_link_hash_entry *h = NULL;
3648 r_symndx = ELF32_R_SYM (rel->r_info);
3649 if (r_symndx >= symtab_hdr->sh_info)
3651 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3652 while (h->root.type == bfd_link_hash_indirect
3653 || h->root.type == bfd_link_hash_warning)
3654 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3657 switch (ELF32_R_TYPE (rel->r_info))
3659 case R_M32R_GOT16_HI_ULO:
3660 case R_M32R_GOT16_HI_SLO:
3661 case R_M32R_GOT16_LO:
3663 case R_M32R_GOTOFF_HI_ULO:
3664 case R_M32R_GOTOFF_HI_SLO:
3665 case R_M32R_GOTOFF_LO:
3667 case R_M32R_GOTPC_HI_ULO:
3668 case R_M32R_GOTPC_HI_SLO:
3669 case R_M32R_GOTPC_LO:
3670 case R_M32R_GOTPC24:
3673 if (h->got.refcount > 0)
3678 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3679 local_got_refcounts[r_symndx]--;
3683 case R_M32R_16_RELA:
3684 case R_M32R_24_RELA:
3685 case R_M32R_32_RELA:
3686 case R_M32R_HI16_ULO_RELA:
3687 case R_M32R_HI16_SLO_RELA:
3688 case R_M32R_LO16_RELA:
3689 case R_M32R_SDA16_RELA:
3690 case R_M32R_18_PCREL_RELA:
3691 case R_M32R_26_PCREL_RELA:
3694 struct elf_m32r_link_hash_entry *eh;
3695 struct elf_m32r_dyn_relocs **pp;
3696 struct elf_m32r_dyn_relocs *p;
3698 if (!info->shared && h->plt.refcount > 0)
3699 h->plt.refcount -= 1;
3701 eh = (struct elf_m32r_link_hash_entry *) h;
3703 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3706 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3707 || ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA)
3717 case R_M32R_26_PLTREL:
3720 if (h->plt.refcount > 0)
3733 /* Look through the relocs for a section during the first phase.
3734 Since we don't do .gots or .plts, we just need to consider the
3735 virtual table relocs for gc. */
3738 m32r_elf_check_relocs (bfd *abfd,
3739 struct bfd_link_info *info,
3741 const Elf_Internal_Rela *relocs)
3743 Elf_Internal_Shdr *symtab_hdr;
3744 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3745 const Elf_Internal_Rela *rel;
3746 const Elf_Internal_Rela *rel_end;
3747 struct elf_m32r_link_hash_table *htab;
3749 bfd_vma *local_got_offsets;
3750 asection *sgot, *srelgot, *sreloc;
3752 if (info->relocatable)
3755 sgot = srelgot = sreloc = NULL;
3757 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3758 sym_hashes = elf_sym_hashes (abfd);
3759 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3760 if (!elf_bad_symtab (abfd))
3761 sym_hashes_end -= symtab_hdr->sh_info;
3763 htab = m32r_elf_hash_table (info);
3764 dynobj = htab->root.dynobj;
3765 local_got_offsets = elf_local_got_offsets (abfd);
3767 rel_end = relocs + sec->reloc_count;
3768 for (rel = relocs; rel < rel_end; rel++)
3771 struct elf_link_hash_entry *h;
3772 unsigned long r_symndx;
3774 r_symndx = ELF32_R_SYM (rel->r_info);
3775 r_type = ELF32_R_TYPE (rel->r_info);
3776 if (r_symndx < symtab_hdr->sh_info)
3780 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3781 while (h->root.type == bfd_link_hash_indirect
3782 || h->root.type == bfd_link_hash_warning)
3783 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3786 /* Some relocs require a global offset table. */
3787 if (htab->sgot == NULL)
3791 case R_M32R_GOT16_HI_ULO:
3792 case R_M32R_GOT16_HI_SLO:
3794 case R_M32R_GOTOFF_HI_ULO:
3795 case R_M32R_GOTOFF_HI_SLO:
3796 case R_M32R_GOTOFF_LO:
3797 case R_M32R_GOT16_LO:
3798 case R_M32R_GOTPC24:
3799 case R_M32R_GOTPC_HI_ULO:
3800 case R_M32R_GOTPC_HI_SLO:
3801 case R_M32R_GOTPC_LO:
3804 htab->root.dynobj = dynobj = abfd;
3805 if (! create_got_section (dynobj, info))
3816 case R_M32R_GOT16_HI_ULO:
3817 case R_M32R_GOT16_HI_SLO:
3818 case R_M32R_GOT16_LO:
3822 h->got.refcount += 1;
3825 bfd_signed_vma *local_got_refcounts;
3827 /* This is a global offset table entry for a local
3829 local_got_refcounts = elf_local_got_refcounts (abfd);
3830 if (local_got_refcounts == NULL)
3834 size = symtab_hdr->sh_info;
3835 size *= sizeof (bfd_signed_vma);
3836 local_got_refcounts = bfd_zalloc (abfd, size);
3837 if (local_got_refcounts == NULL)
3839 elf_local_got_refcounts (abfd) = local_got_refcounts;
3841 local_got_refcounts[r_symndx] += 1;
3845 case R_M32R_26_PLTREL:
3846 /* This symbol requires a procedure linkage table entry. We
3847 actually build the entry in adjust_dynamic_symbol,
3848 because this might be a case of linking PIC code without
3849 linking in any dynamic objects, in which case we don't
3850 need to generate a procedure linkage table after all. */
3852 /* If this is a local symbol, we resolve it directly without
3853 creating a procedure linkage table entry. */
3857 if (h->forced_local)
3861 h->plt.refcount += 1;
3864 case R_M32R_16_RELA:
3865 case R_M32R_24_RELA:
3866 case R_M32R_32_RELA:
3867 case R_M32R_HI16_ULO_RELA:
3868 case R_M32R_HI16_SLO_RELA:
3869 case R_M32R_LO16_RELA:
3870 case R_M32R_SDA16_RELA:
3871 case R_M32R_18_PCREL_RELA:
3872 case R_M32R_26_PCREL_RELA:
3874 if (h != NULL && !info->shared)
3877 h->plt.refcount += 1;
3880 /* If we are creating a shared library, and this is a reloc
3881 against a global symbol, or a non PC relative reloc
3882 against a local symbol, then we need to copy the reloc
3883 into the shared library. However, if we are linking with
3884 -Bsymbolic, we do not need to copy a reloc against a
3885 global symbol which is defined in an object we are
3886 including in the link (i.e., DEF_REGULAR is set). At
3887 this point we have not seen all the input files, so it is
3888 possible that DEF_REGULAR is not set now but will be set
3889 later (it is never cleared). We account for that
3890 possibility below by storing information in the
3891 dyn_relocs field of the hash table entry. A similar
3892 situation occurs when creating shared libraries and symbol
3893 visibility changes render the symbol local.
3895 If on the other hand, we are creating an executable, we
3896 may need to keep relocations for symbols satisfied by a
3897 dynamic library if we manage to avoid copy relocs for the
3900 && (sec->flags & SEC_ALLOC) != 0
3901 && ((r_type != R_M32R_26_PCREL_RELA
3902 && r_type != R_M32R_18_PCREL_RELA)
3904 && (! info->symbolic
3905 || h->root.type == bfd_link_hash_defweak
3906 || !h->def_regular))))
3908 && (sec->flags & SEC_ALLOC) != 0
3910 && (h->root.type == bfd_link_hash_defweak
3911 || !h->def_regular)))
3913 struct elf_m32r_dyn_relocs *p;
3914 struct elf_m32r_dyn_relocs **head;
3917 htab->root.dynobj = dynobj = abfd;
3919 /* When creating a shared object, we must copy these
3920 relocs into the output file. We create a reloc
3921 section in dynobj and make room for the reloc. */
3926 name = (bfd_elf_string_from_elf_section
3928 elf_elfheader (abfd)->e_shstrndx,
3929 elf_section_data (sec)->rel_hdr.sh_name));
3933 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3934 && strcmp (bfd_get_section_name (abfd, sec),
3937 sreloc = bfd_get_section_by_name (dynobj, name);
3942 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3943 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3944 if ((sec->flags & SEC_ALLOC) != 0)
3945 flags |= SEC_ALLOC | SEC_LOAD;
3946 sreloc = bfd_make_section_with_flags (dynobj,
3950 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
3953 elf_section_data (sec)->sreloc = sreloc;
3956 /* If this is a global symbol, we count the number of
3957 relocations we need for this symbol. */
3959 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
3964 /* Track dynamic relocs needed for local syms too. */
3965 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3970 head = ((struct elf_m32r_dyn_relocs **)
3971 &elf_section_data (s)->local_dynrel);
3975 if (p == NULL || p->sec != sec)
3977 bfd_size_type amt = sizeof (*p);
3979 p = bfd_alloc (dynobj, amt);
3990 if (ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3991 || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA)
3996 /* This relocation describes the C++ object vtable hierarchy.
3997 Reconstruct it for later use during GC. */
3998 case R_M32R_RELA_GNU_VTINHERIT:
3999 case R_M32R_GNU_VTINHERIT:
4000 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4004 /* This relocation describes which C++ vtable entries are actually
4005 used. Record for later use during GC. */
4006 case R_M32R_GNU_VTENTRY:
4007 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4010 case R_M32R_RELA_GNU_VTENTRY:
4011 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4020 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4022 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
4023 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4024 { NULL, 0, 0, 0, 0 }
4028 m32r_elf_fake_sections (bfd *abfd,
4029 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4034 name = bfd_get_section_name (abfd, sec);
4036 /* The generic elf_fake_sections will set up REL_HDR using the
4037 default kind of relocations. But, we may actually need both
4038 kinds of relocations, so we set up the second header here.
4040 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4041 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4042 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4043 of the resulting empty .rela.<section> sections starts with
4044 sh_offset == object size, and ld doesn't allow that. While the check
4045 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4046 avoided by not emitting those useless sections in the first place. */
4047 if ((sec->flags & SEC_RELOC) != 0)
4049 struct bfd_elf_section_data *esd;
4050 bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4052 esd = elf_section_data (sec);
4053 BFD_ASSERT (esd->rel_hdr2 == NULL);
4054 esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4057 _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4064 static enum elf_reloc_type_class
4065 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4067 switch ((int) ELF32_R_TYPE (rela->r_info))
4069 case R_M32R_RELATIVE: return reloc_class_relative;
4070 case R_M32R_JMP_SLOT: return reloc_class_plt;
4071 case R_M32R_COPY: return reloc_class_copy;
4072 default: return reloc_class_normal;
4076 #define ELF_ARCH bfd_arch_m32r
4077 #define ELF_MACHINE_CODE EM_M32R
4078 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4079 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4081 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4082 #define TARGET_BIG_NAME "elf32-m32r"
4083 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4084 #define TARGET_LITTLE_NAME "elf32-m32rle"
4086 #define elf_info_to_howto m32r_info_to_howto
4087 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4088 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4089 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4090 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4091 #define elf_backend_relocate_section m32r_elf_relocate_section
4092 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4093 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4094 #define elf_backend_check_relocs m32r_elf_check_relocs
4096 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4097 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4098 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4099 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4100 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4101 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4102 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4103 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4105 #define elf_backend_can_gc_sections 1
4107 #define elf_backend_rela_normal 1
4109 #define elf_backend_can_refcount 1
4110 #define elf_backend_want_got_plt 1
4111 #define elf_backend_plt_readonly 1
4112 #define elf_backend_want_plt_sym 0
4113 #define elf_backend_got_header_size 12
4115 #define elf_backend_may_use_rel_p 1
4116 #ifdef USE_M32R_OLD_RELOC
4117 #define elf_backend_default_use_rela_p 0
4118 #define elf_backend_may_use_rela_p 0
4120 #define elf_backend_default_use_rela_p 1
4121 #define elf_backend_may_use_rela_p 1
4122 #define elf_backend_fake_sections m32r_elf_fake_sections
4125 #define elf_backend_object_p m32r_elf_object_p
4126 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4127 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4128 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4129 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4130 #define elf_backend_special_sections m32r_elf_special_sections
4132 #include "elf32-target.h"
4134 #undef ELF_MAXPAGESIZE
4135 #define ELF_MAXPAGESIZE 0x1000
4137 #undef TARGET_BIG_SYM
4138 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4139 #undef TARGET_BIG_NAME
4140 #define TARGET_BIG_NAME "elf32-m32r-linux"
4141 #undef TARGET_LITTLE_SYM
4142 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4143 #undef TARGET_LITTLE_NAME
4144 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4146 #define elf32_bed elf32_m32r_lin_bed
4148 #include "elf32-target.h"