1 /* M32R-specific support for 32-bit ELF.
2 Copyright (C) 1996-2020 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 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 3, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE
, /* pc_relative */
481 complain_overflow_dont
, /* 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 */
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32
, /* type */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
885 TRUE
, /* pc_relative */
887 complain_overflow_bitfield
, /* complain_on_overflow */
888 bfd_elf_generic_reloc
,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE
, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE
), /* pcrel_offset */
898 /* Like R_M32R_24, but referring to the GOT table entry for
900 HOWTO (R_M32R_GOT24
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE
, /* pc_relative */
906 complain_overflow_unsigned
, /* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE
, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL
, /* type */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
920 TRUE
, /* pc_relative */
922 complain_overflow_signed
, /* complain_on_overflow */
923 bfd_elf_generic_reloc
, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE
, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE
), /* pcrel_offset */
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY
, /* type */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE
, /* pc_relative */
941 complain_overflow_bitfield
, /* complain_on_overflow */
942 bfd_elf_generic_reloc
, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE
, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* Like R_M32R_24, but used when setting global offset table
951 HOWTO (R_M32R_GLOB_DAT
, /* type */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE
, /* pc_relative */
957 complain_overflow_bitfield
, /* complain_on_overflow */
958 bfd_elf_generic_reloc
, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE
, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE
), /* pcrel_offset */
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT
, /* type */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
970 FALSE
, /* pc_relative */
972 complain_overflow_bitfield
, /* complain_on_overflow */
973 bfd_elf_generic_reloc
, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE
, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE
), /* pcrel_offset */
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
983 HOWTO (R_M32R_RELATIVE
, /* 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_RELATIVE", /* name */
992 FALSE
, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE
), /* pcrel_offset */
997 HOWTO (R_M32R_GOTOFF
, /* type */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE
, /* pc_relative */
1003 complain_overflow_bitfield
, /* complain_on_overflow */
1004 bfd_elf_generic_reloc
, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE
, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE
), /* pcrel_offset */
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1013 HOWTO (R_M32R_GOTPC24
, /* type */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 TRUE
, /* pc_relative */
1019 complain_overflow_unsigned
, /* complain_on_overflow */
1020 bfd_elf_generic_reloc
, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE
, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE
), /* pcrel_offset */
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1029 HOWTO (R_M32R_GOT16_HI_ULO
, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 FALSE
, /* pc_relative */
1035 complain_overflow_dont
, /* complain_on_overflow */
1036 bfd_elf_generic_reloc
, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE
, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE
), /* pcrel_offset */
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1045 HOWTO (R_M32R_GOT16_HI_SLO
, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 FALSE
, /* pc_relative */
1051 complain_overflow_dont
, /* complain_on_overflow */
1052 bfd_elf_generic_reloc
, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE
, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE
), /* pcrel_offset */
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1061 HOWTO (R_M32R_GOT16_LO
, /* type */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1065 FALSE
, /* pc_relative */
1067 complain_overflow_dont
, /* complain_on_overflow */
1068 bfd_elf_generic_reloc
, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE
, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE
), /* pcrel_offset */
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1078 HOWTO (R_M32R_GOTPC_HI_ULO
, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE
, /* pc_relative */
1084 complain_overflow_dont
, /* complain_on_overflow */
1085 bfd_elf_generic_reloc
, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE
, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE
), /* pcrel_offset */
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1095 HOWTO (R_M32R_GOTPC_HI_SLO
, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE
, /* pc_relative */
1101 complain_overflow_dont
, /* complain_on_overflow */
1102 bfd_elf_generic_reloc
, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE
, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE
), /* pcrel_offset */
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1112 HOWTO (R_M32R_GOTPC_LO
, /* type */
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_GOTPC_LO", /* name */
1121 FALSE
, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE
), /* pcrel_offset */
1126 HOWTO (R_M32R_GOTOFF_HI_ULO
, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE
, /* pc_relative */
1132 complain_overflow_dont
, /* complain_on_overflow */
1133 bfd_elf_generic_reloc
, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE
, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE
), /* pcrel_offset */
1140 HOWTO (R_M32R_GOTOFF_HI_SLO
, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1144 FALSE
, /* pc_relative */
1146 complain_overflow_dont
, /* complain_on_overflow */
1147 bfd_elf_generic_reloc
, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE
, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE
), /* pcrel_offset */
1154 HOWTO (R_M32R_GOTOFF_LO
, /* type */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1158 FALSE
, /* pc_relative */
1160 complain_overflow_dont
, /* complain_on_overflow */
1161 bfd_elf_generic_reloc
, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE
, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE
), /* pcrel_offset */
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1171 struct m32r_reloc_map
1173 bfd_reloc_code_real_type bfd_reloc_val
;
1174 unsigned char elf_reloc_val
;
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old
[] =
1180 { BFD_RELOC_NONE
, R_M32R_NONE
},
1181 { BFD_RELOC_16
, R_M32R_16
},
1182 { BFD_RELOC_32
, R_M32R_32
},
1183 { BFD_RELOC_M32R_24
, R_M32R_24
},
1184 { BFD_RELOC_M32R_10_PCREL
, R_M32R_10_PCREL
},
1185 { BFD_RELOC_M32R_18_PCREL
, R_M32R_18_PCREL
},
1186 { BFD_RELOC_M32R_26_PCREL
, R_M32R_26_PCREL
},
1187 { BFD_RELOC_M32R_HI16_ULO
, R_M32R_HI16_ULO
},
1188 { BFD_RELOC_M32R_HI16_SLO
, R_M32R_HI16_SLO
},
1189 { BFD_RELOC_M32R_LO16
, R_M32R_LO16
},
1190 { BFD_RELOC_M32R_SDA16
, R_M32R_SDA16
},
1191 { BFD_RELOC_VTABLE_INHERIT
, R_M32R_GNU_VTINHERIT
},
1192 { BFD_RELOC_VTABLE_ENTRY
, R_M32R_GNU_VTENTRY
},
1195 static const struct m32r_reloc_map m32r_reloc_map
[] =
1197 { BFD_RELOC_NONE
, R_M32R_NONE
},
1198 { BFD_RELOC_16
, R_M32R_16_RELA
},
1199 { BFD_RELOC_32
, R_M32R_32_RELA
},
1200 { BFD_RELOC_M32R_24
, R_M32R_24_RELA
},
1201 { BFD_RELOC_M32R_10_PCREL
, R_M32R_10_PCREL_RELA
},
1202 { BFD_RELOC_M32R_18_PCREL
, R_M32R_18_PCREL_RELA
},
1203 { BFD_RELOC_M32R_26_PCREL
, R_M32R_26_PCREL_RELA
},
1204 { BFD_RELOC_M32R_HI16_ULO
, R_M32R_HI16_ULO_RELA
},
1205 { BFD_RELOC_M32R_HI16_SLO
, R_M32R_HI16_SLO_RELA
},
1206 { BFD_RELOC_M32R_LO16
, R_M32R_LO16_RELA
},
1207 { BFD_RELOC_M32R_SDA16
, R_M32R_SDA16_RELA
},
1208 { BFD_RELOC_VTABLE_INHERIT
, R_M32R_RELA_GNU_VTINHERIT
},
1209 { BFD_RELOC_VTABLE_ENTRY
, R_M32R_RELA_GNU_VTENTRY
},
1210 { BFD_RELOC_32_PCREL
, R_M32R_REL32
},
1212 { BFD_RELOC_M32R_GOT24
, R_M32R_GOT24
},
1213 { BFD_RELOC_M32R_26_PLTREL
, R_M32R_26_PLTREL
},
1214 { BFD_RELOC_M32R_COPY
, R_M32R_COPY
},
1215 { BFD_RELOC_M32R_GLOB_DAT
, R_M32R_GLOB_DAT
},
1216 { BFD_RELOC_M32R_JMP_SLOT
, R_M32R_JMP_SLOT
},
1217 { BFD_RELOC_M32R_RELATIVE
, R_M32R_RELATIVE
},
1218 { BFD_RELOC_M32R_GOTOFF
, R_M32R_GOTOFF
},
1219 { BFD_RELOC_M32R_GOTPC24
, R_M32R_GOTPC24
},
1220 { BFD_RELOC_M32R_GOT16_HI_ULO
, R_M32R_GOT16_HI_ULO
},
1221 { BFD_RELOC_M32R_GOT16_HI_SLO
, R_M32R_GOT16_HI_SLO
},
1222 { BFD_RELOC_M32R_GOT16_LO
, R_M32R_GOT16_LO
},
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO
, R_M32R_GOTPC_HI_ULO
},
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO
, R_M32R_GOTPC_HI_SLO
},
1225 { BFD_RELOC_M32R_GOTPC_LO
, R_M32R_GOTPC_LO
},
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO
, R_M32R_GOTOFF_HI_ULO
},
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO
, R_M32R_GOTOFF_HI_SLO
},
1228 { BFD_RELOC_M32R_GOTOFF_LO
, R_M32R_GOTOFF_LO
},
1232 static reloc_howto_type
*
1233 bfd_elf32_bfd_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1234 bfd_reloc_code_real_type code
)
1238 #ifdef USE_M32R_OLD_RELOC
1240 i
< sizeof (m32r_reloc_map_old
) / sizeof (struct m32r_reloc_map
);
1242 if (m32r_reloc_map_old
[i
].bfd_reloc_val
== code
)
1243 return &m32r_elf_howto_table
[m32r_reloc_map_old
[i
].elf_reloc_val
];
1245 #else /* ! USE_M32R_OLD_RELOC */
1248 i
< sizeof (m32r_reloc_map
) / sizeof (struct m32r_reloc_map
);
1250 if (m32r_reloc_map
[i
].bfd_reloc_val
== code
)
1251 return &m32r_elf_howto_table
[m32r_reloc_map
[i
].elf_reloc_val
];
1257 static reloc_howto_type
*
1258 bfd_elf32_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1264 i
< sizeof (m32r_elf_howto_table
) / sizeof (m32r_elf_howto_table
[0]);
1266 if (m32r_elf_howto_table
[i
].name
!= NULL
1267 && strcasecmp (m32r_elf_howto_table
[i
].name
, r_name
) == 0)
1268 return &m32r_elf_howto_table
[i
];
1273 /* Set the howto pointer for an M32R ELF reloc. */
1276 m32r_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
,
1278 Elf_Internal_Rela
*dst
)
1280 unsigned int r_type
;
1282 r_type
= ELF32_R_TYPE (dst
->r_info
);
1283 if (r_type
> (unsigned int) R_M32R_GNU_VTENTRY
)
1285 /* xgettext:c-format */
1286 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
1288 bfd_set_error (bfd_error_bad_value
);
1291 cache_ptr
->howto
= &m32r_elf_howto_table
[r_type
];
1296 m32r_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1298 Elf_Internal_Rela
*dst
)
1300 unsigned int r_type
= ELF32_R_TYPE (dst
->r_info
);
1302 if (r_type
== (unsigned int) R_M32R_NONE
1303 || ((r_type
> (unsigned int) R_M32R_GNU_VTENTRY
)
1304 && (r_type
< (unsigned int) R_M32R_max
)))
1306 cache_ptr
->howto
= &m32r_elf_howto_table
[r_type
];
1310 /* xgettext:c-format */
1311 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd
, r_type
);
1312 bfd_set_error (bfd_error_bad_value
);
1317 /* Given a BFD section, try to locate the corresponding ELF section
1321 _bfd_m32r_elf_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
1325 if (strcmp (bfd_section_name (sec
), ".scommon") == 0)
1327 *retval
= SHN_M32R_SCOMMON
;
1333 /* M32R ELF uses two common sections. One is the usual one, and the other
1334 is for small objects. All the small objects are kept together, and then
1335 referenced via one register, which yields faster assembler code. It is
1336 up to the compiler to emit an instruction to load the register with
1337 _SDA_BASE. This is what we use for the small common section. This
1338 approach is copied from elf32-mips.c. */
1339 static asection m32r_elf_scom_section
;
1340 static asymbol m32r_elf_scom_symbol
;
1341 static asymbol
*m32r_elf_scom_symbol_ptr
;
1343 /* Handle the special M32R section numbers that a symbol may use. */
1346 _bfd_m32r_elf_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
1348 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
1350 switch (elfsym
->internal_elf_sym
.st_shndx
)
1352 case SHN_M32R_SCOMMON
:
1353 if (m32r_elf_scom_section
.name
== NULL
)
1355 /* Initialize the small common section. */
1356 m32r_elf_scom_section
.name
= ".scommon";
1357 m32r_elf_scom_section
.flags
= SEC_IS_COMMON
;
1358 m32r_elf_scom_section
.output_section
= &m32r_elf_scom_section
;
1359 m32r_elf_scom_section
.symbol
= &m32r_elf_scom_symbol
;
1360 m32r_elf_scom_section
.symbol_ptr_ptr
= &m32r_elf_scom_symbol_ptr
;
1361 m32r_elf_scom_symbol
.name
= ".scommon";
1362 m32r_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
1363 m32r_elf_scom_symbol
.section
= &m32r_elf_scom_section
;
1364 m32r_elf_scom_symbol_ptr
= &m32r_elf_scom_symbol
;
1366 asym
->section
= &m32r_elf_scom_section
;
1367 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
1372 /* Hook called by the linker routine which adds symbols from an object
1373 file. We must handle the special M32R section numbers here.
1374 We also keep watching for whether we need to create the sdata special
1378 m32r_elf_add_symbol_hook (bfd
*abfd
,
1379 struct bfd_link_info
*info
,
1380 Elf_Internal_Sym
*sym
,
1382 flagword
*flagsp ATTRIBUTE_UNUSED
,
1386 if (! bfd_link_relocatable (info
)
1387 && (*namep
)[0] == '_' && (*namep
)[1] == 'S'
1388 && strcmp (*namep
, "_SDA_BASE_") == 0
1389 && is_elf_hash_table (info
->hash
))
1391 /* This is simpler than using _bfd_elf_create_linker_section
1392 (our needs are simpler than ppc's needs). Also
1393 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1394 section already exists a new one is created that follows it which
1395 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1396 struct elf_link_hash_entry
*h
;
1397 struct bfd_link_hash_entry
*bh
;
1398 asection
*s
= bfd_get_section_by_name (abfd
, ".sdata");
1400 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1403 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1404 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1406 s
= bfd_make_section_anyway_with_flags (abfd
, ".sdata",
1410 if (!bfd_set_section_alignment (s
, 2))
1414 bh
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_",
1415 FALSE
, FALSE
, FALSE
);
1417 if ((bh
== NULL
|| bh
->type
== bfd_link_hash_undefined
)
1418 && !(_bfd_generic_link_add_one_symbol (info
,
1426 get_elf_backend_data (abfd
)->collect
,
1429 h
= (struct elf_link_hash_entry
*) bh
;
1430 h
->type
= STT_OBJECT
;
1433 switch (sym
->st_shndx
)
1435 case SHN_M32R_SCOMMON
:
1436 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
1437 (*secp
)->flags
|= SEC_IS_COMMON
;
1438 *valp
= sym
->st_size
;
1445 /* We have to figure out the SDA_BASE value, so that we can adjust the
1446 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1447 BFD. If we can't find it, we're stuck. We cache it in the ELF
1448 target data. We don't need to adjust the symbol value for an
1449 external symbol if we are producing relocatable output. */
1451 static bfd_reloc_status_type
1452 m32r_elf_final_sda_base (bfd
*output_bfd
,
1453 struct bfd_link_info
*info
,
1454 const char **error_message
,
1457 if (elf_gp (output_bfd
) == 0)
1459 struct bfd_link_hash_entry
*h
;
1461 h
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_", FALSE
, FALSE
, TRUE
);
1462 if (h
!= NULL
&& h
->type
== bfd_link_hash_defined
)
1463 elf_gp (output_bfd
) = (h
->u
.def
.value
1464 + h
->u
.def
.section
->output_section
->vma
1465 + h
->u
.def
.section
->output_offset
);
1468 /* Only get the error once. */
1469 *psb
= elf_gp (output_bfd
) = 4;
1471 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1472 return bfd_reloc_dangerous
;
1475 *psb
= elf_gp (output_bfd
);
1476 return bfd_reloc_ok
;
1479 /* Return size of a PLT entry. */
1480 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1482 /* The m32r linker needs to keep track of the number of relocs that it
1483 decides to copy in check_relocs for each symbol. This is so that
1484 it can discard PC relative relocs if it doesn't need them when
1485 linking with -Bsymbolic. We store the information in a field
1486 extending the regular ELF linker hash table. */
1488 /* This structure keeps track of the number of PC relative relocs we
1489 have copied for a given symbol. */
1491 struct elf_m32r_pcrel_relocs_copied
1494 struct elf_m32r_pcrel_relocs_copied
*next
;
1495 /* A section in dynobj. */
1497 /* Number of relocs copied in this section. */
1498 bfd_size_type count
;
1501 /* m32r ELF linker hash table. */
1503 struct elf_m32r_link_hash_table
1505 struct elf_link_hash_table root
;
1507 /* Short-cuts to get to dynamic linker sections. */
1511 /* Small local sym cache. */
1512 struct sym_cache sym_cache
;
1515 /* Traverse an m32r ELF linker hash table. */
1517 #define m32r_elf_link_hash_traverse(table, func, info) \
1518 (elf_link_hash_traverse \
1520 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1523 /* Get the m32r ELF linker hash table from a link_info structure. */
1525 #define m32r_elf_hash_table(p) \
1526 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1527 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
1529 /* Create an m32r ELF linker hash table. */
1531 static struct bfd_link_hash_table
*
1532 m32r_elf_link_hash_table_create (bfd
*abfd
)
1534 struct elf_m32r_link_hash_table
*ret
;
1535 size_t amt
= sizeof (struct elf_m32r_link_hash_table
);
1537 ret
= bfd_zmalloc (amt
);
1541 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1542 _bfd_elf_link_hash_newfunc
,
1543 sizeof (struct elf_link_hash_entry
),
1550 return &ret
->root
.root
;
1553 /* Create dynamic sections when linking against a dynamic object. */
1556 m32r_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
1558 struct elf_m32r_link_hash_table
*htab
;
1559 flagword flags
, pltflags
;
1561 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1562 int ptralign
= 2; /* 32bit */
1564 htab
= m32r_elf_hash_table (info
);
1568 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1569 .rel[a].bss sections. */
1570 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
1571 | SEC_LINKER_CREATED
);
1574 pltflags
|= SEC_CODE
;
1575 if (bed
->plt_not_loaded
)
1576 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
1577 if (bed
->plt_readonly
)
1578 pltflags
|= SEC_READONLY
;
1580 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
1581 htab
->root
.splt
= s
;
1583 || !bfd_set_section_alignment (s
, bed
->plt_alignment
))
1586 if (bed
->want_plt_sym
)
1588 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1590 struct bfd_link_hash_entry
*bh
= NULL
;
1591 struct elf_link_hash_entry
*h
;
1593 if (! (_bfd_generic_link_add_one_symbol
1594 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
1595 (bfd_vma
) 0, NULL
, FALSE
,
1596 get_elf_backend_data (abfd
)->collect
, &bh
)))
1598 h
= (struct elf_link_hash_entry
*) bh
;
1600 h
->type
= STT_OBJECT
;
1601 htab
->root
.hplt
= h
;
1603 if (bfd_link_pic (info
)
1604 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
1608 s
= bfd_make_section_anyway_with_flags (abfd
,
1609 bed
->default_use_rela_p
1610 ? ".rela.plt" : ".rel.plt",
1611 flags
| SEC_READONLY
);
1612 htab
->root
.srelplt
= s
;
1614 || !bfd_set_section_alignment (s
, ptralign
))
1617 if (htab
->root
.sgot
== NULL
1618 && !_bfd_elf_create_got_section (abfd
, info
))
1621 if (bed
->want_dynbss
)
1623 /* The .dynbss section is a place to put symbols which are defined
1624 by dynamic objects, are referenced by regular objects, and are
1625 not functions. We must allocate space for them in the process
1626 image and use a R_*_COPY reloc to tell the dynamic linker to
1627 initialize them at run time. The linker script puts the .dynbss
1628 section into the .bss section of the final image. */
1629 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
1630 SEC_ALLOC
| SEC_LINKER_CREATED
);
1634 /* The .rel[a].bss section holds copy relocs. This section is not
1635 normally needed. We need to create it here, though, so that the
1636 linker will map it to an output section. We can't just create it
1637 only if we need it, because we will not know whether we need it
1638 until we have seen all the input files, and the first time the
1639 main linker code calls BFD after examining all the input files
1640 (size_dynamic_sections) the input sections have already been
1641 mapped to the output sections. If the section turns out not to
1642 be needed, we can discard it later. We will never need this
1643 section when generating a shared object, since they do not use
1645 if (! bfd_link_pic (info
))
1647 s
= bfd_make_section_anyway_with_flags (abfd
,
1648 (bed
->default_use_rela_p
1649 ? ".rela.bss" : ".rel.bss"),
1650 flags
| SEC_READONLY
);
1653 || !bfd_set_section_alignment (s
, ptralign
))
1662 /* Adjust a symbol defined by a dynamic object and referenced by a
1663 regular object. The current definition is in some section of the
1664 dynamic object, but we're not including those sections. We have to
1665 change the definition to something the rest of the link can
1669 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1670 struct elf_link_hash_entry
*h
)
1672 struct elf_m32r_link_hash_table
*htab
;
1677 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1680 dynobj
= elf_hash_table (info
)->dynobj
;
1682 /* Make sure we know what is going on here. */
1683 BFD_ASSERT (dynobj
!= NULL
1688 && !h
->def_regular
)));
1690 /* If this is a function, put it in the procedure linkage table. We
1691 will fill in the contents of the procedure linkage table later,
1692 when we know the address of the .got section. */
1693 if (h
->type
== STT_FUNC
1696 if (! bfd_link_pic (info
)
1699 && h
->root
.type
!= bfd_link_hash_undefweak
1700 && h
->root
.type
!= bfd_link_hash_undefined
)
1702 /* This case can occur if we saw a PLT reloc in an input
1703 file, but the symbol was never referred to by a dynamic
1704 object. In such a case, we don't actually need to build
1705 a procedure linkage table, and we can just do a PCREL
1707 h
->plt
.offset
= (bfd_vma
) -1;
1714 h
->plt
.offset
= (bfd_vma
) -1;
1716 /* If this is a weak symbol, and there is a real definition, the
1717 processor independent code will have arranged for us to see the
1718 real definition first, and we can just use the same value. */
1719 if (h
->is_weakalias
)
1721 struct elf_link_hash_entry
*def
= weakdef (h
);
1722 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1723 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1724 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1728 /* This is a reference to a symbol defined by a dynamic object which
1729 is not a function. */
1731 /* If we are creating a shared library, we must presume that the
1732 only references to the symbol are via the global offset table.
1733 For such cases we need not do anything here; the relocations will
1734 be handled correctly by relocate_section. */
1735 if (bfd_link_pic (info
))
1738 /* If there are no references to this symbol that do not use the
1739 GOT, we don't need to generate a copy reloc. */
1740 if (!h
->non_got_ref
)
1743 /* If -z nocopyreloc was given, we won't generate them either. */
1744 if (0 && info
->nocopyreloc
)
1750 /* If we don't find any dynamic relocs in read-only sections, then
1751 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1752 if (0 && !_bfd_elf_readonly_dynrelocs (h
))
1758 /* We must allocate the symbol in our .dynbss section, which will
1759 become part of the .bss section of the executable. There will be
1760 an entry for this symbol in the .dynsym section. The dynamic
1761 object will contain position independent code, so all references
1762 from the dynamic object to this symbol will go through the global
1763 offset table. The dynamic linker will use the .dynsym entry to
1764 determine the address it must put in the global offset table, so
1765 both the dynamic object and the regular object will refer to the
1766 same memory location for the variable. */
1768 htab
= m32r_elf_hash_table (info
);
1773 BFD_ASSERT (s
!= NULL
);
1775 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1776 to copy the initial value out of the dynamic object and into the
1777 runtime process image. We need to remember the offset into the
1778 .rela.bss section we are going to use. */
1779 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1783 srel
= htab
->srelbss
;
1784 BFD_ASSERT (srel
!= NULL
);
1785 srel
->size
+= sizeof (Elf32_External_Rela
);
1789 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1792 /* Allocate space in .plt, .got and associated reloc sections for
1796 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1798 struct bfd_link_info
*info
;
1799 struct elf_m32r_link_hash_table
*htab
;
1800 struct elf_dyn_relocs
*p
;
1802 if (h
->root
.type
== bfd_link_hash_indirect
)
1805 info
= (struct bfd_link_info
*) inf
;
1806 htab
= m32r_elf_hash_table (info
);
1810 if (htab
->root
.dynamic_sections_created
1811 && h
->plt
.refcount
> 0)
1813 /* Make sure this symbol is output as a dynamic symbol.
1814 Undefined weak syms won't yet be marked as dynamic. */
1815 if (h
->dynindx
== -1
1816 && !h
->forced_local
)
1818 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1822 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
1824 asection
*s
= htab
->root
.splt
;
1826 /* If this is the first .plt entry, make room for the special
1829 s
->size
+= PLT_ENTRY_SIZE
;
1831 h
->plt
.offset
= s
->size
;
1833 /* If this symbol is not defined in a regular file, and we are
1834 not generating a shared library, then set the symbol to this
1835 location in the .plt. This is required to make function
1836 pointers compare as equal between the normal executable and
1837 the shared library. */
1838 if (! bfd_link_pic (info
)
1841 h
->root
.u
.def
.section
= s
;
1842 h
->root
.u
.def
.value
= h
->plt
.offset
;
1845 /* Make room for this entry. */
1846 s
->size
+= PLT_ENTRY_SIZE
;
1848 /* We also need to make an entry in the .got.plt section, which
1849 will be placed in the .got section by the linker script. */
1850 htab
->root
.sgotplt
->size
+= 4;
1852 /* We also need to make an entry in the .rel.plt section. */
1853 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1857 h
->plt
.offset
= (bfd_vma
) -1;
1863 h
->plt
.offset
= (bfd_vma
) -1;
1867 if (h
->got
.refcount
> 0)
1872 /* Make sure this symbol is output as a dynamic symbol.
1873 Undefined weak syms won't yet be marked as dynamic. */
1874 if (h
->dynindx
== -1
1875 && !h
->forced_local
)
1877 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1881 s
= htab
->root
.sgot
;
1883 h
->got
.offset
= s
->size
;
1885 dyn
= htab
->root
.dynamic_sections_created
;
1886 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
1887 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1890 h
->got
.offset
= (bfd_vma
) -1;
1892 if (h
->dyn_relocs
== NULL
)
1895 /* In the shared -Bsymbolic case, discard space allocated for
1896 dynamic pc-relative relocs against symbols which turn out to be
1897 defined in regular objects. For the normal shared case, discard
1898 space for pc-relative relocs that have become local due to symbol
1899 visibility changes. */
1901 if (bfd_link_pic (info
))
1907 struct elf_dyn_relocs
**pp
;
1909 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
;)
1911 p
->count
-= p
->pc_count
;
1920 /* Also discard relocs on undefined weak syms with non-default
1922 if (h
->dyn_relocs
!= NULL
1923 && h
->root
.type
== bfd_link_hash_undefweak
)
1925 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1926 h
->dyn_relocs
= NULL
;
1928 /* Make sure undefined weak symbols are output as a dynamic
1930 else if (h
->dynindx
== -1
1931 && !h
->forced_local
)
1933 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1940 /* For the non-shared case, discard space for relocs against
1941 symbols which turn out to need copy relocs or are not
1947 || (htab
->root
.dynamic_sections_created
1948 && (h
->root
.type
== bfd_link_hash_undefweak
1949 || h
->root
.type
== bfd_link_hash_undefined
))))
1951 /* Make sure this symbol is output as a dynamic symbol.
1952 Undefined weak syms won't yet be marked as dynamic. */
1953 if (h
->dynindx
== -1
1954 && !h
->forced_local
)
1956 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1960 /* If that succeeded, we know we'll be keeping all the
1962 if (h
->dynindx
!= -1)
1966 h
->dyn_relocs
= NULL
;
1971 /* Finally, allocate space. */
1972 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1974 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1975 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
1981 /* Set the sizes of the dynamic sections. */
1984 m32r_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
1985 struct bfd_link_info
*info
)
1987 struct elf_m32r_link_hash_table
*htab
;
1994 printf ("m32r_elf_size_dynamic_sections()\n");
1997 htab
= m32r_elf_hash_table (info
);
2001 dynobj
= htab
->root
.dynobj
;
2002 BFD_ASSERT (dynobj
!= NULL
);
2004 if (htab
->root
.dynamic_sections_created
)
2006 /* Set the contents of the .interp section to the interpreter. */
2007 if (bfd_link_executable (info
) && !info
->nointerp
)
2009 s
= bfd_get_linker_section (dynobj
, ".interp");
2010 BFD_ASSERT (s
!= NULL
);
2011 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2012 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2016 /* Set up .got offsets for local syms, and space for local dynamic
2018 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2020 bfd_signed_vma
*local_got
;
2021 bfd_signed_vma
*end_local_got
;
2022 bfd_size_type locsymcount
;
2023 Elf_Internal_Shdr
*symtab_hdr
;
2026 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2029 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2031 struct elf_dyn_relocs
*p
;
2033 for (p
= ((struct elf_dyn_relocs
*)
2034 elf_section_data (s
)->local_dynrel
);
2038 if (! bfd_is_abs_section (p
->sec
)
2039 && bfd_is_abs_section (p
->sec
->output_section
))
2041 /* Input section has been discarded, either because
2042 it is a copy of a linkonce section or due to
2043 linker script /DISCARD/, so we'll be discarding
2046 else if (p
->count
!= 0)
2048 srel
= elf_section_data (p
->sec
)->sreloc
;
2049 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2050 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2051 info
->flags
|= DF_TEXTREL
;
2056 local_got
= elf_local_got_refcounts (ibfd
);
2060 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2061 locsymcount
= symtab_hdr
->sh_info
;
2062 end_local_got
= local_got
+ locsymcount
;
2063 s
= htab
->root
.sgot
;
2064 srel
= htab
->root
.srelgot
;
2065 for (; local_got
< end_local_got
; ++local_got
)
2069 *local_got
= s
->size
;
2071 if (bfd_link_pic (info
))
2072 srel
->size
+= sizeof (Elf32_External_Rela
);
2075 *local_got
= (bfd_vma
) -1;
2079 /* Allocate global sym .plt and .got entries, and space for global
2080 sym dynamic relocs. */
2081 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2083 /* We now have determined the sizes of the various dynamic sections.
2084 Allocate memory for them. */
2086 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2088 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2091 if (s
== htab
->root
.splt
2092 || s
== htab
->root
.sgot
2093 || s
== htab
->root
.sgotplt
2094 || s
== htab
->sdynbss
)
2096 /* Strip this section if we don't need it; see the
2099 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
2101 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2104 /* We use the reloc_count field as a counter if we need
2105 to copy relocs into the output file. */
2109 /* It's not one of our sections, so don't allocate space. */
2114 /* If we don't need this section, strip it from the
2115 output file. This is mostly to handle .rela.bss and
2116 .rela.plt. We must create both sections in
2117 create_dynamic_sections, because they must be created
2118 before the linker maps input sections to output
2119 sections. The linker does that before
2120 adjust_dynamic_symbol is called, and it is that
2121 function which decides whether anything needs to go
2122 into these sections. */
2123 s
->flags
|= SEC_EXCLUDE
;
2127 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2130 /* Allocate memory for the section contents. We use bfd_zalloc
2131 here in case unused entries are not reclaimed before the
2132 section's contents are written out. This should not happen,
2133 but this way if it does, we get a R_M32R_NONE reloc instead
2135 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2136 if (s
->contents
== NULL
)
2140 if (htab
->root
.dynamic_sections_created
)
2142 /* Add some entries to the .dynamic section. We fill in the
2143 values later, in m32r_elf_finish_dynamic_sections, but we
2144 must add the entries now so that we get the correct size for
2145 the .dynamic section. The DT_DEBUG entry is filled in by the
2146 dynamic linker and used by the debugger. */
2147 #define add_dynamic_entry(TAG, VAL) \
2148 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2150 if (bfd_link_executable (info
))
2152 if (! add_dynamic_entry (DT_DEBUG
, 0))
2156 if (htab
->root
.splt
->size
!= 0)
2158 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2159 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2160 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2161 || ! add_dynamic_entry (DT_JMPREL
, 0))
2167 if (! add_dynamic_entry (DT_RELA
, 0)
2168 || ! add_dynamic_entry (DT_RELASZ
, 0)
2169 || ! add_dynamic_entry (DT_RELAENT
,
2170 sizeof (Elf32_External_Rela
)))
2173 /* If any dynamic relocs apply to a read-only section,
2174 then we need a DT_TEXTREL entry. */
2175 if ((info
->flags
& DF_TEXTREL
) == 0)
2176 elf_link_hash_traverse (&htab
->root
,
2177 _bfd_elf_maybe_set_textrel
, info
);
2179 if ((info
->flags
& DF_TEXTREL
) != 0)
2181 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2186 #undef add_dynamic_entry
2191 /* Relocate an M32R/D ELF section.
2192 There is some attempt to make this function usable for many architectures,
2193 both for RELA and REL type relocs, if only to serve as a learning tool.
2195 The RELOCATE_SECTION function is called by the new ELF backend linker
2196 to handle the relocations for a section.
2198 The relocs are always passed as Rela structures; if the section
2199 actually uses Rel structures, the r_addend field will always be
2202 This function is responsible for adjust the section contents as
2203 necessary, and (if using Rela relocs and generating a
2204 relocatable output file) adjusting the reloc addend as
2207 This function does not have to worry about setting the reloc
2208 address or the reloc symbol index.
2210 LOCAL_SYMS is a pointer to the swapped in local symbols.
2212 LOCAL_SECTIONS is an array giving the section in the input file
2213 corresponding to the st_shndx field of each local symbol.
2215 The global hash table entry for the global symbols can be found
2216 via elf_sym_hashes (input_bfd).
2218 When generating relocatable output, this function must handle
2219 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2220 going to be the section symbol corresponding to the output
2221 section, which means that the addend must be adjusted
2225 m32r_elf_relocate_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2226 struct bfd_link_info
*info
,
2228 asection
*input_section
,
2230 Elf_Internal_Rela
*relocs
,
2231 Elf_Internal_Sym
*local_syms
,
2232 asection
**local_sections
)
2234 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2235 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
2236 Elf_Internal_Rela
*rel
, *relend
;
2237 /* Assume success. */
2238 bfd_boolean ret
= TRUE
;
2239 struct elf_m32r_link_hash_table
*htab
= m32r_elf_hash_table (info
);
2240 bfd_vma
*local_got_offsets
;
2241 asection
*sgot
, *splt
, *sreloc
;
2242 bfd_vma high_address
= bfd_get_section_limit (input_bfd
, input_section
);
2247 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2249 sgot
= htab
->root
.sgot
;
2250 splt
= htab
->root
.splt
;
2254 relend
= relocs
+ input_section
->reloc_count
;
2255 for (; rel
< relend
; rel
++)
2258 reloc_howto_type
*howto
;
2259 unsigned long r_symndx
;
2260 struct elf_link_hash_entry
*h
;
2261 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2262 ensure it's zero (we use REL relocs, not RELA). Therefore this
2263 should be assigning zero to `addend', but for clarity we use
2265 bfd_vma addend
= rel
->r_addend
;
2266 bfd_vma offset
= rel
->r_offset
;
2268 Elf_Internal_Sym
*sym
;
2270 const char *sym_name
;
2271 bfd_reloc_status_type r
;
2272 const char *errmsg
= NULL
;
2273 bfd_boolean use_rel
= FALSE
;
2276 r_type
= ELF32_R_TYPE (rel
->r_info
);
2277 if (r_type
< 0 || r_type
>= (int) R_M32R_max
)
2279 /* xgettext:c-format */
2280 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2281 input_bfd
, (int) r_type
);
2282 bfd_set_error (bfd_error_bad_value
);
2287 if ( r_type
== R_M32R_GNU_VTENTRY
2288 || r_type
== R_M32R_GNU_VTINHERIT
2289 || r_type
== R_M32R_NONE
2290 || r_type
== R_M32R_RELA_GNU_VTENTRY
2291 || r_type
== R_M32R_RELA_GNU_VTINHERIT
)
2294 if (r_type
<= R_M32R_GNU_VTENTRY
)
2297 howto
= m32r_elf_howto_table
+ r_type
;
2298 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2304 if (r_symndx
< symtab_hdr
->sh_info
)
2307 sym
= local_syms
+ r_symndx
;
2308 sec
= local_sections
[r_symndx
];
2309 sym_name
= "<local symbol>";
2313 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2314 addend
= rel
->r_addend
;
2318 relocation
= (sec
->output_section
->vma
2319 + sec
->output_offset
2325 /* External symbol. */
2328 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2330 if (info
->wrap_hash
!= NULL
2331 && (input_section
->flags
& SEC_DEBUGGING
) != 0)
2332 h
= ((struct elf_link_hash_entry
*)
2333 unwrap_hash_lookup (info
, input_bfd
, &h
->root
));
2335 while (h
->root
.type
== bfd_link_hash_indirect
2336 || h
->root
.type
== bfd_link_hash_warning
)
2337 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2338 sym_name
= h
->root
.root
.string
;
2340 if (h
->root
.type
== bfd_link_hash_defined
2341 || h
->root
.type
== bfd_link_hash_defweak
)
2344 sec
= h
->root
.u
.def
.section
;
2346 dyn
= htab
->root
.dynamic_sections_created
;
2347 sec
= h
->root
.u
.def
.section
;
2348 if (r_type
== R_M32R_GOTPC24
2349 || (r_type
== R_M32R_GOTPC_HI_ULO
2350 || r_type
== R_M32R_GOTPC_HI_SLO
2351 || r_type
== R_M32R_GOTPC_LO
)
2352 || (r_type
== R_M32R_26_PLTREL
2353 && h
->plt
.offset
!= (bfd_vma
) -1)
2354 || ((r_type
== R_M32R_GOT24
2355 || r_type
== R_M32R_GOT16_HI_ULO
2356 || r_type
== R_M32R_GOT16_HI_SLO
2357 || r_type
== R_M32R_GOT16_LO
)
2358 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2359 bfd_link_pic (info
),
2361 && (! bfd_link_pic (info
)
2362 || (! info
->symbolic
&& h
->dynindx
!= -1)
2363 || !h
->def_regular
))
2364 || (bfd_link_pic (info
)
2365 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2367 && (((r_type
== R_M32R_16_RELA
2368 || r_type
== R_M32R_32_RELA
2369 || r_type
== R_M32R_24_RELA
2370 || r_type
== R_M32R_HI16_ULO_RELA
2371 || r_type
== R_M32R_HI16_SLO_RELA
2372 || r_type
== R_M32R_LO16_RELA
)
2373 && !h
->forced_local
)
2374 || r_type
== R_M32R_REL32
2375 || r_type
== R_M32R_10_PCREL_RELA
2376 || r_type
== R_M32R_18_PCREL_RELA
2377 || r_type
== R_M32R_26_PCREL_RELA
)
2378 && ((input_section
->flags
& SEC_ALLOC
) != 0
2379 /* DWARF will emit R_M32R_16(24,32) relocations
2380 in its sections against symbols defined
2381 externally in shared libraries. We can't do
2382 anything with them here. */
2383 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2384 && h
->def_dynamic
))))
2386 /* In these cases, we don't need the relocation
2387 value. We check specially because in some
2388 obscure cases sec->output_section will be NULL. */
2390 else if (sec
->output_section
!= NULL
)
2391 relocation
= (h
->root
.u
.def
.value
2392 + sec
->output_section
->vma
2393 + sec
->output_offset
);
2394 else if (!bfd_link_relocatable (info
)
2395 && (_bfd_elf_section_offset (output_bfd
, info
,
2401 /* xgettext:c-format */
2402 (_("%pB(%pA+%#" PRIx64
"): unresolvable %s relocation "
2403 "against symbol `%s'"),
2406 (uint64_t) rel
->r_offset
,
2408 h
->root
.root
.string
);
2411 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2413 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
2414 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2416 else if (!bfd_link_relocatable (info
))
2417 info
->callbacks
->undefined_symbol
2418 (info
, h
->root
.root
.string
, input_bfd
, input_section
, offset
,
2419 (info
->unresolved_syms_in_objects
== RM_DIAGNOSE
2420 && !info
->warn_unresolved_syms
)
2421 || ELF_ST_VISIBILITY (h
->other
));
2424 if (sec
!= NULL
&& discarded_section (sec
))
2425 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2426 rel
, 1, relend
, howto
, 0, contents
);
2428 if (bfd_link_relocatable (info
) && !use_rel
)
2430 /* This is a relocatable link. We don't have to change
2431 anything, unless the reloc is against a section symbol,
2432 in which case we have to adjust according to where the
2433 section symbol winds up in the output section. */
2434 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2435 rel
->r_addend
+= sec
->output_offset
;
2439 if (bfd_link_relocatable (info
) && use_rel
)
2441 /* This is a relocatable link. We don't have to change
2442 anything, unless the reloc is against a section symbol,
2443 in which case we have to adjust according to where the
2444 section symbol winds up in the output section. */
2445 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
2448 addend
+= sec
->output_offset
;
2450 /* If partial_inplace, we need to store any additional addend
2451 back in the section. */
2452 if (! howto
->partial_inplace
)
2454 /* ??? Here is a nice place to call a special_function
2456 if (r_type
!= R_M32R_HI16_SLO
&& r_type
!= R_M32R_HI16_ULO
)
2457 r
= _bfd_relocate_contents (howto
, input_bfd
,
2458 addend
, contents
+ offset
);
2461 Elf_Internal_Rela
*lorel
;
2463 /* We allow an arbitrary number of HI16 relocs before the
2464 LO16 reloc. This permits gcc to emit the HI and LO relocs
2466 for (lorel
= rel
+ 1;
2468 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2469 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2473 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2475 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2480 r
= _bfd_relocate_contents (howto
, input_bfd
,
2481 addend
, contents
+ offset
);
2486 /* Sanity check the address. */
2487 if (offset
> high_address
)
2489 r
= bfd_reloc_outofrange
;
2493 switch ((int) r_type
)
2496 /* Relocation is relative to the start of the global offset
2497 table (for ld24 rx, #uimm24). eg access at label+addend
2499 ld24 rx. #label@GOTOFF + addend
2502 BFD_ASSERT (sgot
!= NULL
);
2504 relocation
= -(relocation
- sgot
->output_section
->vma
);
2505 rel
->r_addend
= -rel
->r_addend
;
2508 case R_M32R_GOTOFF_HI_ULO
:
2509 case R_M32R_GOTOFF_HI_SLO
:
2510 case R_M32R_GOTOFF_LO
:
2511 BFD_ASSERT (sgot
!= NULL
);
2513 relocation
-= sgot
->output_section
->vma
;
2515 if ((r_type
== R_M32R_GOTOFF_HI_SLO
)
2516 && ((relocation
+ rel
->r_addend
) & 0x8000))
2517 rel
->r_addend
+= 0x10000;
2520 case R_M32R_GOTPC24
:
2521 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2522 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2524 relocation
= sgot
->output_section
->vma
;
2527 case R_M32R_GOTPC_HI_ULO
:
2528 case R_M32R_GOTPC_HI_SLO
:
2529 case R_M32R_GOTPC_LO
:
2531 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2533 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2534 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2537 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2538 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2540 relocation
= sgot
->output_section
->vma
;
2541 relocation
-= (input_section
->output_section
->vma
2542 + input_section
->output_offset
2544 if ((r_type
== R_M32R_GOTPC_HI_SLO
)
2545 && ((relocation
+ rel
->r_addend
) & 0x8000))
2546 rel
->r_addend
+= 0x10000;
2550 case R_M32R_GOT16_HI_ULO
:
2551 case R_M32R_GOT16_HI_SLO
:
2552 case R_M32R_GOT16_LO
:
2555 /* Relocation is to the entry for this symbol in the global
2557 BFD_ASSERT (sgot
!= NULL
);
2564 off
= h
->got
.offset
;
2565 BFD_ASSERT (off
!= (bfd_vma
) -1);
2567 dyn
= htab
->root
.dynamic_sections_created
;
2568 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2569 bfd_link_pic (info
),
2571 || (bfd_link_pic (info
)
2577 /* This is actually a static link, or it is a
2578 -Bsymbolic link and the symbol is defined
2579 locally, or the symbol was forced to be local
2580 because of a version file. We must initialize
2581 this entry in the global offset table. Since the
2582 offset must always be a multiple of 4, we use the
2583 least significant bit to record whether we have
2584 initialized it already.
2586 When doing a dynamic link, we create a .rela.got
2587 relocation entry to initialize the value. This
2588 is done in the finish_dynamic_symbol routine. */
2593 bfd_put_32 (output_bfd
, relocation
,
2594 sgot
->contents
+ off
);
2599 relocation
= sgot
->output_offset
+ off
;
2606 BFD_ASSERT (local_got_offsets
!= NULL
2607 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
2609 off
= local_got_offsets
[r_symndx
];
2611 /* The offset must always be a multiple of 4. We use
2612 the least significant bit to record whether we have
2613 already processed this entry. */
2618 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
2620 if (bfd_link_pic (info
))
2623 Elf_Internal_Rela outrel
;
2625 /* We need to generate a R_M32R_RELATIVE reloc
2626 for the dynamic linker. */
2627 srelgot
= htab
->root
.srelgot
;
2628 BFD_ASSERT (srelgot
!= NULL
);
2630 outrel
.r_offset
= (sgot
->output_section
->vma
2631 + sgot
->output_offset
2633 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2634 outrel
.r_addend
= relocation
;
2635 loc
= srelgot
->contents
;
2636 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
2637 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2638 ++srelgot
->reloc_count
;
2641 local_got_offsets
[r_symndx
] |= 1;
2644 relocation
= sgot
->output_offset
+ off
;
2646 if ((r_type
== R_M32R_GOT16_HI_SLO
)
2647 && ((relocation
+ rel
->r_addend
) & 0x8000))
2648 rel
->r_addend
+= 0x10000;
2652 case R_M32R_26_PLTREL
:
2653 /* Relocation is to the entry for this symbol in the
2654 procedure linkage table. */
2656 /* The native assembler will generate a 26_PLTREL reloc
2657 for a local symbol if you assemble a call from one
2658 section to another when using -K pic. */
2662 if (h
->forced_local
)
2665 if (h
->plt
.offset
== (bfd_vma
) -1)
2666 /* We didn't make a PLT entry for this symbol. This
2667 happens when statically linking PIC code, or when
2668 using -Bsymbolic. */
2671 relocation
= (splt
->output_section
->vma
2672 + splt
->output_offset
2676 case R_M32R_HI16_SLO_RELA
:
2677 if ((relocation
+ rel
->r_addend
) & 0x8000)
2678 rel
->r_addend
+= 0x10000;
2681 case R_M32R_16_RELA
:
2682 case R_M32R_24_RELA
:
2683 case R_M32R_32_RELA
:
2685 case R_M32R_10_PCREL_RELA
:
2686 case R_M32R_18_PCREL_RELA
:
2687 case R_M32R_26_PCREL_RELA
:
2688 case R_M32R_HI16_ULO_RELA
:
2689 case R_M32R_LO16_RELA
:
2690 if (bfd_link_pic (info
)
2691 && r_symndx
!= STN_UNDEF
2692 && (input_section
->flags
& SEC_ALLOC
) != 0
2693 && (( r_type
!= R_M32R_10_PCREL_RELA
2694 && r_type
!= R_M32R_18_PCREL_RELA
2695 && r_type
!= R_M32R_26_PCREL_RELA
2696 && r_type
!= R_M32R_REL32
)
2699 && (! info
->symbolic
2700 || !h
->def_regular
))))
2702 Elf_Internal_Rela outrel
;
2703 bfd_boolean skip
, relocate
;
2706 /* When generating a shared object, these relocations
2707 are copied into the output file to be resolved at run
2711 sreloc
= _bfd_elf_get_dynamic_reloc_section
2712 (input_bfd
, input_section
, /*rela?*/ TRUE
);
2720 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2724 if (outrel
.r_offset
== (bfd_vma
) -1)
2726 else if (outrel
.r_offset
== (bfd_vma
) -2)
2727 skip
= relocate
= TRUE
;
2728 outrel
.r_offset
+= (input_section
->output_section
->vma
2729 + input_section
->output_offset
);
2732 memset (&outrel
, 0, sizeof outrel
);
2733 else if ( r_type
== R_M32R_10_PCREL_RELA
2734 || r_type
== R_M32R_18_PCREL_RELA
2735 || r_type
== R_M32R_26_PCREL_RELA
2736 || r_type
== R_M32R_REL32
)
2738 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
2739 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2740 outrel
.r_addend
= rel
->r_addend
;
2744 /* h->dynindx may be -1 if this symbol was marked to
2747 || ((info
->symbolic
|| h
->dynindx
== -1)
2751 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2752 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2756 BFD_ASSERT (h
->dynindx
!= -1);
2757 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2758 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2762 loc
= sreloc
->contents
;
2763 loc
+= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
2764 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2765 ++sreloc
->reloc_count
;
2767 /* If this reloc is against an external symbol, we do
2768 not want to fiddle with the addend. Otherwise, we
2769 need to include the symbol value so that it becomes
2770 an addend for the dynamic reloc. */
2775 else if (r_type
!= R_M32R_10_PCREL_RELA
)
2779 case (int) R_M32R_10_PCREL
:
2780 r
= m32r_elf_do_10_pcrel_reloc (input_bfd
, howto
, input_section
,
2782 sec
, relocation
, addend
);
2785 case (int) R_M32R_HI16_SLO
:
2786 case (int) R_M32R_HI16_ULO
:
2788 Elf_Internal_Rela
*lorel
;
2790 /* We allow an arbitrary number of HI16 relocs before the
2791 LO16 reloc. This permits gcc to emit the HI and LO relocs
2793 for (lorel
= rel
+ 1;
2795 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2796 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2800 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2802 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2803 contents
, relocation
+ addend
);
2807 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2809 relocation
, addend
);
2814 case (int) R_M32R_SDA16_RELA
:
2815 case (int) R_M32R_SDA16
:
2819 BFD_ASSERT (sec
!= NULL
);
2820 name
= bfd_section_name (sec
);
2822 if ( strcmp (name
, ".sdata") == 0
2823 || strcmp (name
, ".sbss") == 0
2824 || strcmp (name
, ".scommon") == 0)
2827 bfd
*out_bfd
= sec
->output_section
->owner
;
2829 r
= m32r_elf_final_sda_base (out_bfd
, info
,
2832 if (r
!= bfd_reloc_ok
)
2838 /* At this point `relocation' contains the object's
2840 relocation
-= sda_base
;
2841 /* Now it contains the offset from _SDA_BASE_. */
2846 /* xgettext:c-format */
2847 (_("%pB: the target (%s) of an %s relocation"
2848 " is in the wrong section (%pA)"),
2851 m32r_elf_howto_table
[(int) r_type
].name
,
2853 /*bfd_set_error (bfd_error_bad_value); ??? why? */
2860 default : /* OLD_M32R_RELOC */
2862 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2864 relocation
, addend
);
2868 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2869 contents
, rel
->r_offset
,
2870 relocation
, rel
->r_addend
);
2876 if (r
!= bfd_reloc_ok
)
2878 /* FIXME: This should be generic enough to go in a utility. */
2882 name
= h
->root
.root
.string
;
2885 name
= (bfd_elf_string_from_elf_section
2886 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
2887 if (name
== NULL
|| *name
== '\0')
2888 name
= bfd_section_name (sec
);
2896 case bfd_reloc_overflow
:
2897 (*info
->callbacks
->reloc_overflow
)
2898 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2899 (bfd_vma
) 0, input_bfd
, input_section
, offset
);
2902 case bfd_reloc_undefined
:
2903 (*info
->callbacks
->undefined_symbol
)
2904 (info
, name
, input_bfd
, input_section
, offset
, TRUE
);
2907 case bfd_reloc_outofrange
:
2908 errmsg
= _("internal error: out of range error");
2911 case bfd_reloc_notsupported
:
2912 errmsg
= _("internal error: unsupported relocation error");
2915 case bfd_reloc_dangerous
:
2916 errmsg
= _("internal error: dangerous error");
2920 errmsg
= _("internal error: unknown error");
2924 (*info
->callbacks
->warning
) (info
, errmsg
, name
, input_bfd
,
2925 input_section
, offset
);
2934 /* Finish up dynamic symbol handling. We set the contents of various
2935 dynamic sections here. */
2938 m32r_elf_finish_dynamic_symbol (bfd
*output_bfd
,
2939 struct bfd_link_info
*info
,
2940 struct elf_link_hash_entry
*h
,
2941 Elf_Internal_Sym
*sym
)
2943 struct elf_m32r_link_hash_table
*htab
;
2947 printf ("m32r_elf_finish_dynamic_symbol()\n");
2950 htab
= m32r_elf_hash_table (info
);
2954 if (h
->plt
.offset
!= (bfd_vma
) -1)
2962 Elf_Internal_Rela rela
;
2964 /* This symbol has an entry in the procedure linkage table. Set
2967 BFD_ASSERT (h
->dynindx
!= -1);
2969 splt
= htab
->root
.splt
;
2970 sgot
= htab
->root
.sgotplt
;
2971 srela
= htab
->root
.srelplt
;
2972 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
2974 /* Get the index in the procedure linkage table which
2975 corresponds to this symbol. This is the index of this symbol
2976 in all the symbols for which we are making plt entries. The
2977 first entry in the procedure linkage table is reserved. */
2978 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
2980 /* Get the offset into the .got table of the entry that
2981 corresponds to this function. Each .got entry is 4 bytes.
2982 The first three are reserved. */
2983 got_offset
= (plt_index
+ 3) * 4;
2985 /* Fill in the entry in the procedure linkage table. */
2986 if (! bfd_link_pic (info
))
2988 bfd_put_32 (output_bfd
,
2990 + (((sgot
->output_section
->vma
2991 + sgot
->output_offset
2992 + got_offset
) >> 16) & 0xffff)),
2993 splt
->contents
+ h
->plt
.offset
);
2994 bfd_put_32 (output_bfd
,
2996 + ((sgot
->output_section
->vma
2997 + sgot
->output_offset
2998 + got_offset
) & 0xffff)),
2999 splt
->contents
+ h
->plt
.offset
+ 4);
3000 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3001 splt
->contents
+ h
->plt
.offset
+ 8);
3002 bfd_put_32 (output_bfd
,
3004 + plt_index
* sizeof (Elf32_External_Rela
)),
3005 splt
->contents
+ h
->plt
.offset
+ 12);
3006 bfd_put_32 (output_bfd
,
3008 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3009 splt
->contents
+ h
->plt
.offset
+ 16);
3013 bfd_put_32 (output_bfd
,
3014 PLT_ENTRY_WORD0
+ got_offset
,
3015 splt
->contents
+ h
->plt
.offset
);
3016 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
,
3017 splt
->contents
+ h
->plt
.offset
+ 4);
3018 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3019 splt
->contents
+ h
->plt
.offset
+ 8);
3020 bfd_put_32 (output_bfd
,
3022 + plt_index
* sizeof (Elf32_External_Rela
)),
3023 splt
->contents
+ h
->plt
.offset
+ 12);
3024 bfd_put_32 (output_bfd
,
3026 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3027 splt
->contents
+ h
->plt
.offset
+ 16);
3030 /* Fill in the entry in the global offset table. */
3031 bfd_put_32 (output_bfd
,
3032 (splt
->output_section
->vma
3033 + splt
->output_offset
3035 + 12), /* same offset */
3036 sgot
->contents
+ got_offset
);
3038 /* Fill in the entry in the .rela.plt section. */
3039 rela
.r_offset
= (sgot
->output_section
->vma
3040 + sgot
->output_offset
3042 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_JMP_SLOT
);
3044 loc
= srela
->contents
;
3045 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
3046 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3048 if (!h
->def_regular
)
3050 /* Mark the symbol as undefined, rather than as defined in
3051 the .plt section. Leave the value alone. */
3052 sym
->st_shndx
= SHN_UNDEF
;
3056 if (h
->got
.offset
!= (bfd_vma
) -1)
3060 Elf_Internal_Rela rela
;
3062 /* This symbol has an entry in the global offset table. Set it
3065 sgot
= htab
->root
.sgot
;
3066 srela
= htab
->root
.srelgot
;
3067 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
3069 rela
.r_offset
= (sgot
->output_section
->vma
3070 + sgot
->output_offset
3071 + (h
->got
.offset
&~ 1));
3073 /* If this is a -Bsymbolic link, and the symbol is defined
3074 locally, we just want to emit a RELATIVE reloc. Likewise if
3075 the symbol was forced to be local because of a version file.
3076 The entry in the global offset table will already have been
3077 initialized in the relocate_section function. */
3078 if (bfd_link_pic (info
)
3084 rela
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
3085 rela
.r_addend
= (h
->root
.u
.def
.value
3086 + h
->root
.u
.def
.section
->output_section
->vma
3087 + h
->root
.u
.def
.section
->output_offset
);
3091 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
3092 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
3093 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_GLOB_DAT
);
3097 loc
= srela
->contents
;
3098 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
3099 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3100 ++srela
->reloc_count
;
3106 Elf_Internal_Rela rela
;
3108 /* This symbols needs a copy reloc. Set it up. */
3110 BFD_ASSERT (h
->dynindx
!= -1
3111 && (h
->root
.type
== bfd_link_hash_defined
3112 || h
->root
.type
== bfd_link_hash_defweak
));
3114 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
3115 BFD_ASSERT (s
!= NULL
);
3117 rela
.r_offset
= (h
->root
.u
.def
.value
3118 + h
->root
.u
.def
.section
->output_section
->vma
3119 + h
->root
.u
.def
.section
->output_offset
);
3120 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_COPY
);
3123 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
3124 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3128 /* Mark some specially defined symbols as absolute. */
3129 if (h
== htab
->root
.hdynamic
|| h
== htab
->root
.hgot
)
3130 sym
->st_shndx
= SHN_ABS
;
3136 /* Finish up the dynamic sections. */
3139 m32r_elf_finish_dynamic_sections (bfd
*output_bfd
,
3140 struct bfd_link_info
*info
)
3142 struct elf_m32r_link_hash_table
*htab
;
3148 printf ("m32r_elf_finish_dynamic_sections()\n");
3151 htab
= m32r_elf_hash_table (info
);
3155 dynobj
= htab
->root
.dynobj
;
3157 sgot
= htab
->root
.sgotplt
;
3158 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3160 if (htab
->root
.dynamic_sections_created
)
3163 Elf32_External_Dyn
*dyncon
, *dynconend
;
3165 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
3167 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3168 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3170 for (; dyncon
< dynconend
; dyncon
++)
3172 Elf_Internal_Dyn dyn
;
3175 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3183 s
= htab
->root
.sgotplt
;
3186 s
= htab
->root
.srelplt
;
3188 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3189 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3193 s
= htab
->root
.srelplt
;
3194 dyn
.d_un
.d_val
= s
->size
;
3195 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3200 /* Fill in the first entry in the procedure linkage table. */
3201 splt
= htab
->root
.splt
;
3202 if (splt
&& splt
->size
> 0)
3204 if (bfd_link_pic (info
))
3206 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
3207 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
3208 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
3209 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
3210 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
3215 /* addr = .got + 4 */
3216 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
3217 bfd_put_32 (output_bfd
,
3218 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
3220 bfd_put_32 (output_bfd
,
3221 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
3222 splt
->contents
+ 4);
3223 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
3224 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
3225 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
3228 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
3233 /* Fill in the first three entries in the global offset table. */
3234 if (sgot
&& sgot
->size
> 0)
3237 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
3239 bfd_put_32 (output_bfd
,
3240 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
3242 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
3243 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
3245 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3252 /* Set the right machine number. */
3255 m32r_elf_object_p (bfd
*abfd
)
3257 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3260 case E_M32R_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r
); break;
3261 case E_M32RX_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32rx
); break;
3262 case E_M32R2_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r2
); break;
3267 /* Store the machine number in the flags field. */
3270 m32r_elf_final_write_processing (bfd
*abfd
)
3274 switch (bfd_get_mach (abfd
))
3277 case bfd_mach_m32r
: val
= E_M32R_ARCH
; break;
3278 case bfd_mach_m32rx
: val
= E_M32RX_ARCH
; break;
3279 case bfd_mach_m32r2
: val
= E_M32R2_ARCH
; break;
3282 elf_elfheader (abfd
)->e_flags
&=~ EF_M32R_ARCH
;
3283 elf_elfheader (abfd
)->e_flags
|= val
;
3284 return _bfd_elf_final_write_processing (abfd
);
3287 /* Function to keep M32R specific file flags. */
3290 m32r_elf_set_private_flags (bfd
*abfd
, flagword flags
)
3292 BFD_ASSERT (!elf_flags_init (abfd
)
3293 || elf_elfheader (abfd
)->e_flags
== flags
);
3295 elf_elfheader (abfd
)->e_flags
= flags
;
3296 elf_flags_init (abfd
) = TRUE
;
3300 /* Merge backend specific data from an object file to the output
3301 object file when linking. */
3304 m32r_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3306 bfd
*obfd
= info
->output_bfd
;
3310 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3311 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3314 in_flags
= elf_elfheader (ibfd
)->e_flags
;
3315 out_flags
= elf_elfheader (obfd
)->e_flags
;
3317 if (! elf_flags_init (obfd
))
3319 /* If the input is the default architecture then do not
3320 bother setting the flags for the output architecture,
3321 instead allow future merges to do this. If no future
3322 merges ever set these flags then they will retain their
3323 unitialised values, which surprise surprise, correspond
3324 to the default values. */
3325 if (bfd_get_arch_info (ibfd
)->the_default
)
3328 elf_flags_init (obfd
) = TRUE
;
3329 elf_elfheader (obfd
)->e_flags
= in_flags
;
3331 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
3332 && bfd_get_arch_info (obfd
)->the_default
)
3333 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
3334 bfd_get_mach (ibfd
));
3339 /* Check flag compatibility. */
3340 if (in_flags
== out_flags
)
3343 if ((in_flags
& EF_M32R_ARCH
) != (out_flags
& EF_M32R_ARCH
))
3345 if ( ((in_flags
& EF_M32R_ARCH
) != E_M32R_ARCH
)
3346 || ((out_flags
& EF_M32R_ARCH
) == E_M32R_ARCH
)
3347 || ((in_flags
& EF_M32R_ARCH
) == E_M32R2_ARCH
))
3350 (_("%pB: instruction set mismatch with previous modules"), ibfd
);
3352 bfd_set_error (bfd_error_bad_value
);
3360 /* Display the flags field. */
3363 m32r_elf_print_private_bfd_data (bfd
*abfd
, void * ptr
)
3365 FILE * file
= (FILE *) ptr
;
3367 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
3369 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
3371 fprintf (file
, _("private flags = %lx"), elf_elfheader (abfd
)->e_flags
);
3373 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3376 case E_M32R_ARCH
: fprintf (file
, _(": m32r instructions")); break;
3377 case E_M32RX_ARCH
: fprintf (file
, _(": m32rx instructions")); break;
3378 case E_M32R2_ARCH
: fprintf (file
, _(": m32r2 instructions")); break;
3387 m32r_elf_gc_mark_hook (asection
*sec
,
3388 struct bfd_link_info
*info
,
3389 Elf_Internal_Rela
*rel
,
3390 struct elf_link_hash_entry
*h
,
3391 Elf_Internal_Sym
*sym
)
3394 switch (ELF32_R_TYPE (rel
->r_info
))
3396 case R_M32R_GNU_VTINHERIT
:
3397 case R_M32R_GNU_VTENTRY
:
3398 case R_M32R_RELA_GNU_VTINHERIT
:
3399 case R_M32R_RELA_GNU_VTENTRY
:
3403 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3406 /* Look through the relocs for a section during the first phase.
3407 Since we don't do .gots or .plts, we just need to consider the
3408 virtual table relocs for gc. */
3411 m32r_elf_check_relocs (bfd
*abfd
,
3412 struct bfd_link_info
*info
,
3414 const Elf_Internal_Rela
*relocs
)
3416 Elf_Internal_Shdr
*symtab_hdr
;
3417 struct elf_link_hash_entry
**sym_hashes
;
3418 const Elf_Internal_Rela
*rel
;
3419 const Elf_Internal_Rela
*rel_end
;
3420 struct elf_m32r_link_hash_table
*htab
;
3424 if (bfd_link_relocatable (info
))
3428 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3429 sym_hashes
= elf_sym_hashes (abfd
);
3431 htab
= m32r_elf_hash_table (info
);
3435 dynobj
= htab
->root
.dynobj
;
3437 rel_end
= relocs
+ sec
->reloc_count
;
3438 for (rel
= relocs
; rel
< rel_end
; rel
++)
3441 struct elf_link_hash_entry
*h
;
3442 unsigned long r_symndx
;
3444 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3445 r_type
= ELF32_R_TYPE (rel
->r_info
);
3446 if (r_symndx
< symtab_hdr
->sh_info
)
3450 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3451 while (h
->root
.type
== bfd_link_hash_indirect
3452 || h
->root
.type
== bfd_link_hash_warning
)
3453 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3456 /* Some relocs require a global offset table. */
3457 if (htab
->root
.sgot
== NULL
)
3461 case R_M32R_GOT16_HI_ULO
:
3462 case R_M32R_GOT16_HI_SLO
:
3464 case R_M32R_GOTOFF_HI_ULO
:
3465 case R_M32R_GOTOFF_HI_SLO
:
3466 case R_M32R_GOTOFF_LO
:
3467 case R_M32R_GOT16_LO
:
3468 case R_M32R_GOTPC24
:
3469 case R_M32R_GOTPC_HI_ULO
:
3470 case R_M32R_GOTPC_HI_SLO
:
3471 case R_M32R_GOTPC_LO
:
3474 htab
->root
.dynobj
= dynobj
= abfd
;
3475 if (!_bfd_elf_create_got_section (dynobj
, info
))
3486 case R_M32R_GOT16_HI_ULO
:
3487 case R_M32R_GOT16_HI_SLO
:
3488 case R_M32R_GOT16_LO
:
3492 h
->got
.refcount
+= 1;
3495 bfd_signed_vma
*local_got_refcounts
;
3497 /* This is a global offset table entry for a local
3499 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3500 if (local_got_refcounts
== NULL
)
3504 size
= symtab_hdr
->sh_info
;
3505 size
*= sizeof (bfd_signed_vma
);
3506 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3507 if (local_got_refcounts
== NULL
)
3509 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3511 local_got_refcounts
[r_symndx
] += 1;
3515 case R_M32R_26_PLTREL
:
3516 /* This symbol requires a procedure linkage table entry. We
3517 actually build the entry in adjust_dynamic_symbol,
3518 because this might be a case of linking PIC code without
3519 linking in any dynamic objects, in which case we don't
3520 need to generate a procedure linkage table after all. */
3522 /* If this is a local symbol, we resolve it directly without
3523 creating a procedure linkage table entry. */
3527 if (h
->forced_local
)
3531 h
->plt
.refcount
+= 1;
3534 case R_M32R_16_RELA
:
3535 case R_M32R_24_RELA
:
3536 case R_M32R_32_RELA
:
3538 case R_M32R_HI16_ULO_RELA
:
3539 case R_M32R_HI16_SLO_RELA
:
3540 case R_M32R_LO16_RELA
:
3541 case R_M32R_SDA16_RELA
:
3542 case R_M32R_10_PCREL_RELA
:
3543 case R_M32R_18_PCREL_RELA
:
3544 case R_M32R_26_PCREL_RELA
:
3546 if (h
!= NULL
&& !bfd_link_pic (info
))
3549 h
->plt
.refcount
+= 1;
3552 /* If we are creating a shared library, and this is a reloc
3553 against a global symbol, or a non PC relative reloc
3554 against a local symbol, then we need to copy the reloc
3555 into the shared library. However, if we are linking with
3556 -Bsymbolic, we do not need to copy a reloc against a
3557 global symbol which is defined in an object we are
3558 including in the link (i.e., DEF_REGULAR is set). At
3559 this point we have not seen all the input files, so it is
3560 possible that DEF_REGULAR is not set now but will be set
3561 later (it is never cleared). We account for that
3562 possibility below by storing information in the
3563 dyn_relocs field of the hash table entry. A similar
3564 situation occurs when creating shared libraries and symbol
3565 visibility changes render the symbol local.
3567 If on the other hand, we are creating an executable, we
3568 may need to keep relocations for symbols satisfied by a
3569 dynamic library if we manage to avoid copy relocs for the
3571 if ((bfd_link_pic (info
)
3572 && (sec
->flags
& SEC_ALLOC
) != 0
3573 && (( r_type
!= R_M32R_26_PCREL_RELA
3574 && r_type
!= R_M32R_18_PCREL_RELA
3575 && r_type
!= R_M32R_10_PCREL_RELA
3576 && r_type
!= R_M32R_REL32
)
3578 && (! info
->symbolic
3579 || h
->root
.type
== bfd_link_hash_defweak
3580 || !h
->def_regular
))))
3581 || (!bfd_link_pic (info
)
3582 && (sec
->flags
& SEC_ALLOC
) != 0
3584 && (h
->root
.type
== bfd_link_hash_defweak
3585 || !h
->def_regular
)))
3587 struct elf_dyn_relocs
*p
;
3588 struct elf_dyn_relocs
**head
;
3591 htab
->root
.dynobj
= dynobj
= abfd
;
3593 /* When creating a shared object, we must copy these
3594 relocs into the output file. We create a reloc
3595 section in dynobj and make room for the reloc. */
3598 sreloc
= _bfd_elf_make_dynamic_reloc_section
3599 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
3605 /* If this is a global symbol, we count the number of
3606 relocations we need for this symbol. */
3608 head
= &h
->dyn_relocs
;
3611 /* Track dynamic relocs needed for local syms too. */
3614 Elf_Internal_Sym
*isym
;
3616 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3621 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3625 vpp
= &elf_section_data (s
)->local_dynrel
;
3626 head
= (struct elf_dyn_relocs
**) vpp
;
3630 if (p
== NULL
|| p
->sec
!= sec
)
3632 size_t amt
= sizeof (*p
);
3634 p
= bfd_alloc (dynobj
, amt
);
3645 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
3646 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
3647 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
3648 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
3653 /* This relocation describes the C++ object vtable hierarchy.
3654 Reconstruct it for later use during GC. */
3655 case R_M32R_RELA_GNU_VTINHERIT
:
3656 case R_M32R_GNU_VTINHERIT
:
3657 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3661 /* This relocation describes which C++ vtable entries are actually
3662 used. Record for later use during GC. */
3663 case R_M32R_GNU_VTENTRY
:
3664 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
3667 case R_M32R_RELA_GNU_VTENTRY
:
3668 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3677 static const struct bfd_elf_special_section m32r_elf_special_sections
[] =
3679 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3680 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3681 { NULL
, 0, 0, 0, 0 }
3685 m32r_elf_section_flags (const Elf_Internal_Shdr
*hdr
)
3687 const char *name
= hdr
->bfd_section
->name
;
3689 if (strncmp (name
, ".sbss", 5) == 0
3690 || strncmp (name
, ".sdata", 6) == 0)
3691 hdr
->bfd_section
->flags
|= SEC_SMALL_DATA
;
3696 static enum elf_reloc_type_class
3697 m32r_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3698 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3699 const Elf_Internal_Rela
*rela
)
3701 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3703 case R_M32R_RELATIVE
: return reloc_class_relative
;
3704 case R_M32R_JMP_SLOT
: return reloc_class_plt
;
3705 case R_M32R_COPY
: return reloc_class_copy
;
3706 default: return reloc_class_normal
;
3710 #define ELF_ARCH bfd_arch_m32r
3711 #define ELF_TARGET_ID M32R_ELF_DATA
3712 #define ELF_MACHINE_CODE EM_M32R
3713 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
3714 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
3716 #define TARGET_BIG_SYM m32r_elf32_vec
3717 #define TARGET_BIG_NAME "elf32-m32r"
3718 #define TARGET_LITTLE_SYM m32r_elf32_le_vec
3719 #define TARGET_LITTLE_NAME "elf32-m32rle"
3721 #define elf_info_to_howto m32r_info_to_howto
3722 #define elf_info_to_howto_rel m32r_info_to_howto_rel
3723 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
3724 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
3725 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
3726 #define elf_backend_relocate_section m32r_elf_relocate_section
3727 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
3728 #define elf_backend_check_relocs m32r_elf_check_relocs
3730 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
3731 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
3732 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
3733 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
3734 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
3735 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
3736 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
3737 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
3739 #define elf_backend_can_gc_sections 1
3741 #define elf_backend_rela_normal 1
3743 #define elf_backend_can_refcount 1
3744 #define elf_backend_want_got_plt 1
3745 #define elf_backend_plt_readonly 1
3746 #define elf_backend_want_plt_sym 0
3747 #define elf_backend_got_header_size 12
3748 #define elf_backend_dtrel_excludes_plt 1
3750 #define elf_backend_may_use_rel_p 1
3751 #ifdef USE_M32R_OLD_RELOC
3752 #define elf_backend_default_use_rela_p 0
3753 #define elf_backend_may_use_rela_p 0
3755 #define elf_backend_default_use_rela_p 1
3756 #define elf_backend_may_use_rela_p 1
3759 #define elf_backend_object_p m32r_elf_object_p
3760 #define elf_backend_final_write_processing m32r_elf_final_write_processing
3761 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
3762 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
3763 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
3764 #define elf_backend_special_sections m32r_elf_special_sections
3765 #define elf_backend_section_flags m32r_elf_section_flags
3767 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
3769 #include "elf32-target.h"
3771 #undef ELF_MAXPAGESIZE
3772 #define ELF_MAXPAGESIZE 0x1000
3774 #undef TARGET_BIG_SYM
3775 #define TARGET_BIG_SYM m32r_elf32_linux_vec
3776 #undef TARGET_BIG_NAME
3777 #define TARGET_BIG_NAME "elf32-m32r-linux"
3778 #undef TARGET_LITTLE_SYM
3779 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
3780 #undef TARGET_LITTLE_NAME
3781 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
3783 #define elf32_bed elf32_m32r_lin_bed
3785 #include "elf32-target.h"