1 /* M32R-specific support for 32-bit ELF.
2 Copyright (C) 1996-2019 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_get_section_name (abfd
, 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 (abfd
, 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 entry. */
1503 struct elf_m32r_link_hash_entry
1505 struct elf_link_hash_entry root
;
1507 /* Track dynamic relocs copied for this symbol. */
1508 struct elf_dyn_relocs
*dyn_relocs
;
1511 /* m32r ELF linker hash table. */
1513 struct elf_m32r_link_hash_table
1515 struct elf_link_hash_table root
;
1517 /* Short-cuts to get to dynamic linker sections. */
1521 /* Small local sym cache. */
1522 struct sym_cache sym_cache
;
1525 /* Traverse an m32r ELF linker hash table. */
1527 #define m32r_elf_link_hash_traverse(table, func, info) \
1528 (elf_link_hash_traverse \
1530 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1533 /* Get the m32r ELF linker hash table from a link_info structure. */
1535 #define m32r_elf_hash_table(p) \
1536 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1537 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
1539 /* Create an entry in an m32r ELF linker hash table. */
1541 static struct bfd_hash_entry
*
1542 m32r_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1543 struct bfd_hash_table
*table
,
1546 struct elf_m32r_link_hash_entry
*ret
=
1547 (struct elf_m32r_link_hash_entry
*) entry
;
1549 /* Allocate the structure if it has not already been allocated by a
1552 ret
= bfd_hash_allocate (table
,
1553 sizeof (struct elf_m32r_link_hash_entry
));
1557 /* Call the allocation method of the superclass. */
1558 ret
= ((struct elf_m32r_link_hash_entry
*)
1559 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1563 struct elf_m32r_link_hash_entry
*eh
;
1565 eh
= (struct elf_m32r_link_hash_entry
*) ret
;
1566 eh
->dyn_relocs
= NULL
;
1569 return (struct bfd_hash_entry
*) ret
;
1572 /* Create an m32r ELF linker hash table. */
1574 static struct bfd_link_hash_table
*
1575 m32r_elf_link_hash_table_create (bfd
*abfd
)
1577 struct elf_m32r_link_hash_table
*ret
;
1578 bfd_size_type amt
= sizeof (struct elf_m32r_link_hash_table
);
1580 ret
= bfd_zmalloc (amt
);
1584 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1585 m32r_elf_link_hash_newfunc
,
1586 sizeof (struct elf_m32r_link_hash_entry
),
1593 return &ret
->root
.root
;
1596 /* Create dynamic sections when linking against a dynamic object. */
1599 m32r_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
1601 struct elf_m32r_link_hash_table
*htab
;
1602 flagword flags
, pltflags
;
1604 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1605 int ptralign
= 2; /* 32bit */
1607 htab
= m32r_elf_hash_table (info
);
1611 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1612 .rel[a].bss sections. */
1613 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
1614 | SEC_LINKER_CREATED
);
1617 pltflags
|= SEC_CODE
;
1618 if (bed
->plt_not_loaded
)
1619 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
1620 if (bed
->plt_readonly
)
1621 pltflags
|= SEC_READONLY
;
1623 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
1624 htab
->root
.splt
= s
;
1626 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
1629 if (bed
->want_plt_sym
)
1631 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1633 struct bfd_link_hash_entry
*bh
= NULL
;
1634 struct elf_link_hash_entry
*h
;
1636 if (! (_bfd_generic_link_add_one_symbol
1637 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
1638 (bfd_vma
) 0, NULL
, FALSE
,
1639 get_elf_backend_data (abfd
)->collect
, &bh
)))
1641 h
= (struct elf_link_hash_entry
*) bh
;
1643 h
->type
= STT_OBJECT
;
1644 htab
->root
.hplt
= h
;
1646 if (bfd_link_pic (info
)
1647 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
1651 s
= bfd_make_section_anyway_with_flags (abfd
,
1652 bed
->default_use_rela_p
1653 ? ".rela.plt" : ".rel.plt",
1654 flags
| SEC_READONLY
);
1655 htab
->root
.srelplt
= s
;
1657 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1660 if (htab
->root
.sgot
== NULL
1661 && !_bfd_elf_create_got_section (abfd
, info
))
1664 if (bed
->want_dynbss
)
1666 /* The .dynbss section is a place to put symbols which are defined
1667 by dynamic objects, are referenced by regular objects, and are
1668 not functions. We must allocate space for them in the process
1669 image and use a R_*_COPY reloc to tell the dynamic linker to
1670 initialize them at run time. The linker script puts the .dynbss
1671 section into the .bss section of the final image. */
1672 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
1673 SEC_ALLOC
| SEC_LINKER_CREATED
);
1677 /* The .rel[a].bss section holds copy relocs. This section is not
1678 normally needed. We need to create it here, though, so that the
1679 linker will map it to an output section. We can't just create it
1680 only if we need it, because we will not know whether we need it
1681 until we have seen all the input files, and the first time the
1682 main linker code calls BFD after examining all the input files
1683 (size_dynamic_sections) the input sections have already been
1684 mapped to the output sections. If the section turns out not to
1685 be needed, we can discard it later. We will never need this
1686 section when generating a shared object, since they do not use
1688 if (! bfd_link_pic (info
))
1690 s
= bfd_make_section_anyway_with_flags (abfd
,
1691 (bed
->default_use_rela_p
1692 ? ".rela.bss" : ".rel.bss"),
1693 flags
| SEC_READONLY
);
1696 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1704 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1707 m32r_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
1708 struct elf_link_hash_entry
*dir
,
1709 struct elf_link_hash_entry
*ind
)
1711 struct elf_m32r_link_hash_entry
* edir
;
1712 struct elf_m32r_link_hash_entry
* eind
;
1714 edir
= (struct elf_m32r_link_hash_entry
*) dir
;
1715 eind
= (struct elf_m32r_link_hash_entry
*) ind
;
1717 if (eind
->dyn_relocs
!= NULL
)
1719 if (edir
->dyn_relocs
!= NULL
)
1721 struct elf_dyn_relocs
**pp
;
1722 struct elf_dyn_relocs
*p
;
1724 /* Add reloc counts against the indirect sym to the direct sym
1725 list. Merge any entries against the same section. */
1726 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
1728 struct elf_dyn_relocs
*q
;
1730 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
1731 if (q
->sec
== p
->sec
)
1733 q
->pc_count
+= p
->pc_count
;
1734 q
->count
+= p
->count
;
1741 *pp
= edir
->dyn_relocs
;
1744 edir
->dyn_relocs
= eind
->dyn_relocs
;
1745 eind
->dyn_relocs
= NULL
;
1748 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
1752 /* Find dynamic relocs for H that apply to read-only sections. */
1755 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
1757 struct elf_dyn_relocs
*p
;
1758 struct elf_m32r_link_hash_entry
*eh
= (struct elf_m32r_link_hash_entry
*) h
;
1760 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1762 asection
*s
= p
->sec
->output_section
;
1764 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1770 /* Adjust a symbol defined by a dynamic object and referenced by a
1771 regular object. The current definition is in some section of the
1772 dynamic object, but we're not including those sections. We have to
1773 change the definition to something the rest of the link can
1777 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1778 struct elf_link_hash_entry
*h
)
1780 struct elf_m32r_link_hash_table
*htab
;
1785 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1788 dynobj
= elf_hash_table (info
)->dynobj
;
1790 /* Make sure we know what is going on here. */
1791 BFD_ASSERT (dynobj
!= NULL
1796 && !h
->def_regular
)));
1798 /* If this is a function, put it in the procedure linkage table. We
1799 will fill in the contents of the procedure linkage table later,
1800 when we know the address of the .got section. */
1801 if (h
->type
== STT_FUNC
1804 if (! bfd_link_pic (info
)
1807 && h
->root
.type
!= bfd_link_hash_undefweak
1808 && h
->root
.type
!= bfd_link_hash_undefined
)
1810 /* This case can occur if we saw a PLT reloc in an input
1811 file, but the symbol was never referred to by a dynamic
1812 object. In such a case, we don't actually need to build
1813 a procedure linkage table, and we can just do a PCREL
1815 h
->plt
.offset
= (bfd_vma
) -1;
1822 h
->plt
.offset
= (bfd_vma
) -1;
1824 /* If this is a weak symbol, and there is a real definition, the
1825 processor independent code will have arranged for us to see the
1826 real definition first, and we can just use the same value. */
1827 if (h
->is_weakalias
)
1829 struct elf_link_hash_entry
*def
= weakdef (h
);
1830 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1831 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1832 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1836 /* This is a reference to a symbol defined by a dynamic object which
1837 is not a function. */
1839 /* If we are creating a shared library, we must presume that the
1840 only references to the symbol are via the global offset table.
1841 For such cases we need not do anything here; the relocations will
1842 be handled correctly by relocate_section. */
1843 if (bfd_link_pic (info
))
1846 /* If there are no references to this symbol that do not use the
1847 GOT, we don't need to generate a copy reloc. */
1848 if (!h
->non_got_ref
)
1851 /* If -z nocopyreloc was given, we won't generate them either. */
1852 if (0 && info
->nocopyreloc
)
1858 /* If we don't find any dynamic relocs in read-only sections, then
1859 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1860 if (0 && !readonly_dynrelocs (h
))
1866 /* We must allocate the symbol in our .dynbss section, which will
1867 become part of the .bss section of the executable. There will be
1868 an entry for this symbol in the .dynsym section. The dynamic
1869 object will contain position independent code, so all references
1870 from the dynamic object to this symbol will go through the global
1871 offset table. The dynamic linker will use the .dynsym entry to
1872 determine the address it must put in the global offset table, so
1873 both the dynamic object and the regular object will refer to the
1874 same memory location for the variable. */
1876 htab
= m32r_elf_hash_table (info
);
1881 BFD_ASSERT (s
!= NULL
);
1883 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1884 to copy the initial value out of the dynamic object and into the
1885 runtime process image. We need to remember the offset into the
1886 .rela.bss section we are going to use. */
1887 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1891 srel
= htab
->srelbss
;
1892 BFD_ASSERT (srel
!= NULL
);
1893 srel
->size
+= sizeof (Elf32_External_Rela
);
1897 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1900 /* Allocate space in .plt, .got and associated reloc sections for
1904 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1906 struct bfd_link_info
*info
;
1907 struct elf_m32r_link_hash_table
*htab
;
1908 struct elf_m32r_link_hash_entry
*eh
;
1909 struct elf_dyn_relocs
*p
;
1911 if (h
->root
.type
== bfd_link_hash_indirect
)
1914 info
= (struct bfd_link_info
*) inf
;
1915 htab
= m32r_elf_hash_table (info
);
1919 eh
= (struct elf_m32r_link_hash_entry
*) h
;
1921 if (htab
->root
.dynamic_sections_created
1922 && h
->plt
.refcount
> 0)
1924 /* Make sure this symbol is output as a dynamic symbol.
1925 Undefined weak syms won't yet be marked as dynamic. */
1926 if (h
->dynindx
== -1
1927 && !h
->forced_local
)
1929 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1933 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
1935 asection
*s
= htab
->root
.splt
;
1937 /* If this is the first .plt entry, make room for the special
1940 s
->size
+= PLT_ENTRY_SIZE
;
1942 h
->plt
.offset
= s
->size
;
1944 /* If this symbol is not defined in a regular file, and we are
1945 not generating a shared library, then set the symbol to this
1946 location in the .plt. This is required to make function
1947 pointers compare as equal between the normal executable and
1948 the shared library. */
1949 if (! bfd_link_pic (info
)
1952 h
->root
.u
.def
.section
= s
;
1953 h
->root
.u
.def
.value
= h
->plt
.offset
;
1956 /* Make room for this entry. */
1957 s
->size
+= PLT_ENTRY_SIZE
;
1959 /* We also need to make an entry in the .got.plt section, which
1960 will be placed in the .got section by the linker script. */
1961 htab
->root
.sgotplt
->size
+= 4;
1963 /* We also need to make an entry in the .rel.plt section. */
1964 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1968 h
->plt
.offset
= (bfd_vma
) -1;
1974 h
->plt
.offset
= (bfd_vma
) -1;
1978 if (h
->got
.refcount
> 0)
1983 /* Make sure this symbol is output as a dynamic symbol.
1984 Undefined weak syms won't yet be marked as dynamic. */
1985 if (h
->dynindx
== -1
1986 && !h
->forced_local
)
1988 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1992 s
= htab
->root
.sgot
;
1994 h
->got
.offset
= s
->size
;
1996 dyn
= htab
->root
.dynamic_sections_created
;
1997 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
1998 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2001 h
->got
.offset
= (bfd_vma
) -1;
2003 if (eh
->dyn_relocs
== NULL
)
2006 /* In the shared -Bsymbolic case, discard space allocated for
2007 dynamic pc-relative relocs against symbols which turn out to be
2008 defined in regular objects. For the normal shared case, discard
2009 space for pc-relative relocs that have become local due to symbol
2010 visibility changes. */
2012 if (bfd_link_pic (info
))
2018 struct elf_dyn_relocs
**pp
;
2020 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2022 p
->count
-= p
->pc_count
;
2031 /* Also discard relocs on undefined weak syms with non-default
2033 if (eh
->dyn_relocs
!= NULL
2034 && h
->root
.type
== bfd_link_hash_undefweak
)
2036 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2037 eh
->dyn_relocs
= NULL
;
2039 /* Make sure undefined weak symbols are output as a dynamic
2041 else if (h
->dynindx
== -1
2042 && !h
->forced_local
)
2044 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2051 /* For the non-shared case, discard space for relocs against
2052 symbols which turn out to need copy relocs or are not
2058 || (htab
->root
.dynamic_sections_created
2059 && (h
->root
.type
== bfd_link_hash_undefweak
2060 || h
->root
.type
== bfd_link_hash_undefined
))))
2062 /* Make sure this symbol is output as a dynamic symbol.
2063 Undefined weak syms won't yet be marked as dynamic. */
2064 if (h
->dynindx
== -1
2065 && !h
->forced_local
)
2067 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2071 /* If that succeeded, we know we'll be keeping all the
2073 if (h
->dynindx
!= -1)
2077 eh
->dyn_relocs
= NULL
;
2082 /* Finally, allocate space. */
2083 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2085 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2086 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2092 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2093 read-only sections. */
2096 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2100 if (h
->root
.type
== bfd_link_hash_indirect
)
2103 sec
= readonly_dynrelocs (h
);
2106 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2108 info
->flags
|= DF_TEXTREL
;
2109 info
->callbacks
->minfo
2110 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2111 sec
->owner
, h
->root
.root
.string
, sec
);
2113 /* Not an error, just cut short the traversal. */
2119 /* Set the sizes of the dynamic sections. */
2122 m32r_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2123 struct bfd_link_info
*info
)
2125 struct elf_m32r_link_hash_table
*htab
;
2132 printf ("m32r_elf_size_dynamic_sections()\n");
2135 htab
= m32r_elf_hash_table (info
);
2139 dynobj
= htab
->root
.dynobj
;
2140 BFD_ASSERT (dynobj
!= NULL
);
2142 if (htab
->root
.dynamic_sections_created
)
2144 /* Set the contents of the .interp section to the interpreter. */
2145 if (bfd_link_executable (info
) && !info
->nointerp
)
2147 s
= bfd_get_linker_section (dynobj
, ".interp");
2148 BFD_ASSERT (s
!= NULL
);
2149 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2150 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2154 /* Set up .got offsets for local syms, and space for local dynamic
2156 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2158 bfd_signed_vma
*local_got
;
2159 bfd_signed_vma
*end_local_got
;
2160 bfd_size_type locsymcount
;
2161 Elf_Internal_Shdr
*symtab_hdr
;
2164 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2167 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2169 struct elf_dyn_relocs
*p
;
2171 for (p
= ((struct elf_dyn_relocs
*)
2172 elf_section_data (s
)->local_dynrel
);
2176 if (! bfd_is_abs_section (p
->sec
)
2177 && bfd_is_abs_section (p
->sec
->output_section
))
2179 /* Input section has been discarded, either because
2180 it is a copy of a linkonce section or due to
2181 linker script /DISCARD/, so we'll be discarding
2184 else if (p
->count
!= 0)
2186 srel
= elf_section_data (p
->sec
)->sreloc
;
2187 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2188 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2189 info
->flags
|= DF_TEXTREL
;
2194 local_got
= elf_local_got_refcounts (ibfd
);
2198 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2199 locsymcount
= symtab_hdr
->sh_info
;
2200 end_local_got
= local_got
+ locsymcount
;
2201 s
= htab
->root
.sgot
;
2202 srel
= htab
->root
.srelgot
;
2203 for (; local_got
< end_local_got
; ++local_got
)
2207 *local_got
= s
->size
;
2209 if (bfd_link_pic (info
))
2210 srel
->size
+= sizeof (Elf32_External_Rela
);
2213 *local_got
= (bfd_vma
) -1;
2217 /* Allocate global sym .plt and .got entries, and space for global
2218 sym dynamic relocs. */
2219 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2221 /* We now have determined the sizes of the various dynamic sections.
2222 Allocate memory for them. */
2224 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2226 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2229 if (s
== htab
->root
.splt
2230 || s
== htab
->root
.sgot
2231 || s
== htab
->root
.sgotplt
2232 || s
== htab
->sdynbss
)
2234 /* Strip this section if we don't need it; see the
2237 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2239 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2242 /* We use the reloc_count field as a counter if we need
2243 to copy relocs into the output file. */
2247 /* It's not one of our sections, so don't allocate space. */
2252 /* If we don't need this section, strip it from the
2253 output file. This is mostly to handle .rela.bss and
2254 .rela.plt. We must create both sections in
2255 create_dynamic_sections, because they must be created
2256 before the linker maps input sections to output
2257 sections. The linker does that before
2258 adjust_dynamic_symbol is called, and it is that
2259 function which decides whether anything needs to go
2260 into these sections. */
2261 s
->flags
|= SEC_EXCLUDE
;
2265 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2268 /* Allocate memory for the section contents. We use bfd_zalloc
2269 here in case unused entries are not reclaimed before the
2270 section's contents are written out. This should not happen,
2271 but this way if it does, we get a R_M32R_NONE reloc instead
2273 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2274 if (s
->contents
== NULL
)
2278 if (htab
->root
.dynamic_sections_created
)
2280 /* Add some entries to the .dynamic section. We fill in the
2281 values later, in m32r_elf_finish_dynamic_sections, but we
2282 must add the entries now so that we get the correct size for
2283 the .dynamic section. The DT_DEBUG entry is filled in by the
2284 dynamic linker and used by the debugger. */
2285 #define add_dynamic_entry(TAG, VAL) \
2286 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2288 if (bfd_link_executable (info
))
2290 if (! add_dynamic_entry (DT_DEBUG
, 0))
2294 if (htab
->root
.splt
->size
!= 0)
2296 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2297 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2298 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2299 || ! add_dynamic_entry (DT_JMPREL
, 0))
2305 if (! add_dynamic_entry (DT_RELA
, 0)
2306 || ! add_dynamic_entry (DT_RELASZ
, 0)
2307 || ! add_dynamic_entry (DT_RELAENT
,
2308 sizeof (Elf32_External_Rela
)))
2311 /* If any dynamic relocs apply to a read-only section,
2312 then we need a DT_TEXTREL entry. */
2313 if ((info
->flags
& DF_TEXTREL
) == 0)
2314 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
2316 if ((info
->flags
& DF_TEXTREL
) != 0)
2318 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2323 #undef add_dynamic_entry
2328 /* Relocate an M32R/D ELF section.
2329 There is some attempt to make this function usable for many architectures,
2330 both for RELA and REL type relocs, if only to serve as a learning tool.
2332 The RELOCATE_SECTION function is called by the new ELF backend linker
2333 to handle the relocations for a section.
2335 The relocs are always passed as Rela structures; if the section
2336 actually uses Rel structures, the r_addend field will always be
2339 This function is responsible for adjust the section contents as
2340 necessary, and (if using Rela relocs and generating a
2341 relocatable output file) adjusting the reloc addend as
2344 This function does not have to worry about setting the reloc
2345 address or the reloc symbol index.
2347 LOCAL_SYMS is a pointer to the swapped in local symbols.
2349 LOCAL_SECTIONS is an array giving the section in the input file
2350 corresponding to the st_shndx field of each local symbol.
2352 The global hash table entry for the global symbols can be found
2353 via elf_sym_hashes (input_bfd).
2355 When generating relocatable output, this function must handle
2356 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2357 going to be the section symbol corresponding to the output
2358 section, which means that the addend must be adjusted
2362 m32r_elf_relocate_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2363 struct bfd_link_info
*info
,
2365 asection
*input_section
,
2367 Elf_Internal_Rela
*relocs
,
2368 Elf_Internal_Sym
*local_syms
,
2369 asection
**local_sections
)
2371 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2372 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
2373 Elf_Internal_Rela
*rel
, *relend
;
2374 /* Assume success. */
2375 bfd_boolean ret
= TRUE
;
2376 struct elf_m32r_link_hash_table
*htab
= m32r_elf_hash_table (info
);
2377 bfd_vma
*local_got_offsets
;
2378 asection
*sgot
, *splt
, *sreloc
;
2379 bfd_vma high_address
= bfd_get_section_limit (input_bfd
, input_section
);
2384 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2386 sgot
= htab
->root
.sgot
;
2387 splt
= htab
->root
.splt
;
2391 relend
= relocs
+ input_section
->reloc_count
;
2392 for (; rel
< relend
; rel
++)
2395 reloc_howto_type
*howto
;
2396 unsigned long r_symndx
;
2397 struct elf_link_hash_entry
*h
;
2398 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2399 ensure it's zero (we use REL relocs, not RELA). Therefore this
2400 should be assigning zero to `addend', but for clarity we use
2402 bfd_vma addend
= rel
->r_addend
;
2403 bfd_vma offset
= rel
->r_offset
;
2405 Elf_Internal_Sym
*sym
;
2407 const char *sym_name
;
2408 bfd_reloc_status_type r
;
2409 const char *errmsg
= NULL
;
2410 bfd_boolean use_rel
= FALSE
;
2413 r_type
= ELF32_R_TYPE (rel
->r_info
);
2414 if (r_type
< 0 || r_type
>= (int) R_M32R_max
)
2416 /* xgettext:c-format */
2417 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2418 input_bfd
, (int) r_type
);
2419 bfd_set_error (bfd_error_bad_value
);
2424 if ( r_type
== R_M32R_GNU_VTENTRY
2425 || r_type
== R_M32R_GNU_VTINHERIT
2426 || r_type
== R_M32R_NONE
2427 || r_type
== R_M32R_RELA_GNU_VTENTRY
2428 || r_type
== R_M32R_RELA_GNU_VTINHERIT
)
2431 if (r_type
<= R_M32R_GNU_VTENTRY
)
2434 howto
= m32r_elf_howto_table
+ r_type
;
2435 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2441 if (r_symndx
< symtab_hdr
->sh_info
)
2444 sym
= local_syms
+ r_symndx
;
2445 sec
= local_sections
[r_symndx
];
2446 sym_name
= "<local symbol>";
2450 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2451 addend
= rel
->r_addend
;
2455 relocation
= (sec
->output_section
->vma
2456 + sec
->output_offset
2462 /* External symbol. */
2465 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2467 if (info
->wrap_hash
!= NULL
2468 && (input_section
->flags
& SEC_DEBUGGING
) != 0)
2469 h
= ((struct elf_link_hash_entry
*)
2470 unwrap_hash_lookup (info
, input_bfd
, &h
->root
));
2472 while (h
->root
.type
== bfd_link_hash_indirect
2473 || h
->root
.type
== bfd_link_hash_warning
)
2474 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2475 sym_name
= h
->root
.root
.string
;
2477 if (h
->root
.type
== bfd_link_hash_defined
2478 || h
->root
.type
== bfd_link_hash_defweak
)
2481 sec
= h
->root
.u
.def
.section
;
2483 dyn
= htab
->root
.dynamic_sections_created
;
2484 sec
= h
->root
.u
.def
.section
;
2485 if (r_type
== R_M32R_GOTPC24
2486 || (r_type
== R_M32R_GOTPC_HI_ULO
2487 || r_type
== R_M32R_GOTPC_HI_SLO
2488 || r_type
== R_M32R_GOTPC_LO
)
2489 || (r_type
== R_M32R_26_PLTREL
2490 && h
->plt
.offset
!= (bfd_vma
) -1)
2491 || ((r_type
== R_M32R_GOT24
2492 || r_type
== R_M32R_GOT16_HI_ULO
2493 || r_type
== R_M32R_GOT16_HI_SLO
2494 || r_type
== R_M32R_GOT16_LO
)
2495 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2496 bfd_link_pic (info
),
2498 && (! bfd_link_pic (info
)
2499 || (! info
->symbolic
&& h
->dynindx
!= -1)
2500 || !h
->def_regular
))
2501 || (bfd_link_pic (info
)
2502 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2504 && (((r_type
== R_M32R_16_RELA
2505 || r_type
== R_M32R_32_RELA
2506 || r_type
== R_M32R_24_RELA
2507 || r_type
== R_M32R_HI16_ULO_RELA
2508 || r_type
== R_M32R_HI16_SLO_RELA
2509 || r_type
== R_M32R_LO16_RELA
)
2510 && !h
->forced_local
)
2511 || r_type
== R_M32R_REL32
2512 || r_type
== R_M32R_10_PCREL_RELA
2513 || r_type
== R_M32R_18_PCREL_RELA
2514 || r_type
== R_M32R_26_PCREL_RELA
)
2515 && ((input_section
->flags
& SEC_ALLOC
) != 0
2516 /* DWARF will emit R_M32R_16(24,32) relocations
2517 in its sections against symbols defined
2518 externally in shared libraries. We can't do
2519 anything with them here. */
2520 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2521 && h
->def_dynamic
))))
2523 /* In these cases, we don't need the relocation
2524 value. We check specially because in some
2525 obscure cases sec->output_section will be NULL. */
2527 else if (sec
->output_section
!= NULL
)
2528 relocation
= (h
->root
.u
.def
.value
2529 + sec
->output_section
->vma
2530 + sec
->output_offset
);
2531 else if (!bfd_link_relocatable (info
)
2532 && (_bfd_elf_section_offset (output_bfd
, info
,
2538 /* xgettext:c-format */
2539 (_("%pB(%pA+%#" PRIx64
"): unresolvable %s relocation "
2540 "against symbol `%s'"),
2543 (uint64_t) rel
->r_offset
,
2545 h
->root
.root
.string
);
2548 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2550 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
2551 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2553 else if (!bfd_link_relocatable (info
))
2554 (*info
->callbacks
->undefined_symbol
)
2555 (info
, h
->root
.root
.string
, input_bfd
,
2556 input_section
, offset
,
2557 (info
->unresolved_syms_in_objects
== RM_GENERATE_ERROR
2558 || ELF_ST_VISIBILITY (h
->other
)));
2561 if (sec
!= NULL
&& discarded_section (sec
))
2562 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2563 rel
, 1, relend
, howto
, 0, contents
);
2565 if (bfd_link_relocatable (info
) && !use_rel
)
2567 /* This is a relocatable link. We don't have to change
2568 anything, unless the reloc is against a section symbol,
2569 in which case we have to adjust according to where the
2570 section symbol winds up in the output section. */
2571 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2572 rel
->r_addend
+= sec
->output_offset
;
2576 if (bfd_link_relocatable (info
) && use_rel
)
2578 /* This is a relocatable link. We don't have to change
2579 anything, unless the reloc is against a section symbol,
2580 in which case we have to adjust according to where the
2581 section symbol winds up in the output section. */
2582 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
2585 addend
+= sec
->output_offset
;
2587 /* If partial_inplace, we need to store any additional addend
2588 back in the section. */
2589 if (! howto
->partial_inplace
)
2591 /* ??? Here is a nice place to call a special_function
2593 if (r_type
!= R_M32R_HI16_SLO
&& r_type
!= R_M32R_HI16_ULO
)
2594 r
= _bfd_relocate_contents (howto
, input_bfd
,
2595 addend
, contents
+ offset
);
2598 Elf_Internal_Rela
*lorel
;
2600 /* We allow an arbitrary number of HI16 relocs before the
2601 LO16 reloc. This permits gcc to emit the HI and LO relocs
2603 for (lorel
= rel
+ 1;
2605 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2606 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2610 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2612 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2617 r
= _bfd_relocate_contents (howto
, input_bfd
,
2618 addend
, contents
+ offset
);
2623 /* Sanity check the address. */
2624 if (offset
> high_address
)
2626 r
= bfd_reloc_outofrange
;
2630 switch ((int) r_type
)
2633 /* Relocation is relative to the start of the global offset
2634 table (for ld24 rx, #uimm24). eg access at label+addend
2636 ld24 rx. #label@GOTOFF + addend
2639 BFD_ASSERT (sgot
!= NULL
);
2641 relocation
= -(relocation
- sgot
->output_section
->vma
);
2642 rel
->r_addend
= -rel
->r_addend
;
2645 case R_M32R_GOTOFF_HI_ULO
:
2646 case R_M32R_GOTOFF_HI_SLO
:
2647 case R_M32R_GOTOFF_LO
:
2648 BFD_ASSERT (sgot
!= NULL
);
2650 relocation
-= sgot
->output_section
->vma
;
2652 if ((r_type
== R_M32R_GOTOFF_HI_SLO
)
2653 && ((relocation
+ rel
->r_addend
) & 0x8000))
2654 rel
->r_addend
+= 0x10000;
2657 case R_M32R_GOTPC24
:
2658 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2659 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2661 relocation
= sgot
->output_section
->vma
;
2664 case R_M32R_GOTPC_HI_ULO
:
2665 case R_M32R_GOTPC_HI_SLO
:
2666 case R_M32R_GOTPC_LO
:
2668 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2670 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2671 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2674 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2675 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2677 relocation
= sgot
->output_section
->vma
;
2678 relocation
-= (input_section
->output_section
->vma
2679 + input_section
->output_offset
2681 if ((r_type
== R_M32R_GOTPC_HI_SLO
)
2682 && ((relocation
+ rel
->r_addend
) & 0x8000))
2683 rel
->r_addend
+= 0x10000;
2687 case R_M32R_GOT16_HI_ULO
:
2688 case R_M32R_GOT16_HI_SLO
:
2689 case R_M32R_GOT16_LO
:
2692 /* Relocation is to the entry for this symbol in the global
2694 BFD_ASSERT (sgot
!= NULL
);
2701 off
= h
->got
.offset
;
2702 BFD_ASSERT (off
!= (bfd_vma
) -1);
2704 dyn
= htab
->root
.dynamic_sections_created
;
2705 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2706 bfd_link_pic (info
),
2708 || (bfd_link_pic (info
)
2714 /* This is actually a static link, or it is a
2715 -Bsymbolic link and the symbol is defined
2716 locally, or the symbol was forced to be local
2717 because of a version file. We must initialize
2718 this entry in the global offset table. Since the
2719 offset must always be a multiple of 4, we use the
2720 least significant bit to record whether we have
2721 initialized it already.
2723 When doing a dynamic link, we create a .rela.got
2724 relocation entry to initialize the value. This
2725 is done in the finish_dynamic_symbol routine. */
2730 bfd_put_32 (output_bfd
, relocation
,
2731 sgot
->contents
+ off
);
2736 relocation
= sgot
->output_offset
+ off
;
2743 BFD_ASSERT (local_got_offsets
!= NULL
2744 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
2746 off
= local_got_offsets
[r_symndx
];
2748 /* The offset must always be a multiple of 4. We use
2749 the least significant bit to record whether we have
2750 already processed this entry. */
2755 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
2757 if (bfd_link_pic (info
))
2760 Elf_Internal_Rela outrel
;
2762 /* We need to generate a R_M32R_RELATIVE reloc
2763 for the dynamic linker. */
2764 srelgot
= htab
->root
.srelgot
;
2765 BFD_ASSERT (srelgot
!= NULL
);
2767 outrel
.r_offset
= (sgot
->output_section
->vma
2768 + sgot
->output_offset
2770 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2771 outrel
.r_addend
= relocation
;
2772 loc
= srelgot
->contents
;
2773 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
2774 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2775 ++srelgot
->reloc_count
;
2778 local_got_offsets
[r_symndx
] |= 1;
2781 relocation
= sgot
->output_offset
+ off
;
2783 if ((r_type
== R_M32R_GOT16_HI_SLO
)
2784 && ((relocation
+ rel
->r_addend
) & 0x8000))
2785 rel
->r_addend
+= 0x10000;
2789 case R_M32R_26_PLTREL
:
2790 /* Relocation is to the entry for this symbol in the
2791 procedure linkage table. */
2793 /* The native assembler will generate a 26_PLTREL reloc
2794 for a local symbol if you assemble a call from one
2795 section to another when using -K pic. */
2799 if (h
->forced_local
)
2802 if (h
->plt
.offset
== (bfd_vma
) -1)
2803 /* We didn't make a PLT entry for this symbol. This
2804 happens when statically linking PIC code, or when
2805 using -Bsymbolic. */
2808 relocation
= (splt
->output_section
->vma
2809 + splt
->output_offset
2813 case R_M32R_HI16_SLO_RELA
:
2814 if ((relocation
+ rel
->r_addend
) & 0x8000)
2815 rel
->r_addend
+= 0x10000;
2818 case R_M32R_16_RELA
:
2819 case R_M32R_24_RELA
:
2820 case R_M32R_32_RELA
:
2822 case R_M32R_10_PCREL_RELA
:
2823 case R_M32R_18_PCREL_RELA
:
2824 case R_M32R_26_PCREL_RELA
:
2825 case R_M32R_HI16_ULO_RELA
:
2826 case R_M32R_LO16_RELA
:
2827 if (bfd_link_pic (info
)
2828 && r_symndx
!= STN_UNDEF
2829 && (input_section
->flags
& SEC_ALLOC
) != 0
2830 && (( r_type
!= R_M32R_10_PCREL_RELA
2831 && r_type
!= R_M32R_18_PCREL_RELA
2832 && r_type
!= R_M32R_26_PCREL_RELA
2833 && r_type
!= R_M32R_REL32
)
2836 && (! info
->symbolic
2837 || !h
->def_regular
))))
2839 Elf_Internal_Rela outrel
;
2840 bfd_boolean skip
, relocate
;
2843 /* When generating a shared object, these relocations
2844 are copied into the output file to be resolved at run
2848 sreloc
= _bfd_elf_get_dynamic_reloc_section
2849 (input_bfd
, input_section
, /*rela?*/ TRUE
);
2857 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2861 if (outrel
.r_offset
== (bfd_vma
) -1)
2863 else if (outrel
.r_offset
== (bfd_vma
) -2)
2864 skip
= relocate
= TRUE
;
2865 outrel
.r_offset
+= (input_section
->output_section
->vma
2866 + input_section
->output_offset
);
2869 memset (&outrel
, 0, sizeof outrel
);
2870 else if ( r_type
== R_M32R_10_PCREL_RELA
2871 || r_type
== R_M32R_18_PCREL_RELA
2872 || r_type
== R_M32R_26_PCREL_RELA
2873 || r_type
== R_M32R_REL32
)
2875 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
2876 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2877 outrel
.r_addend
= rel
->r_addend
;
2881 /* h->dynindx may be -1 if this symbol was marked to
2884 || ((info
->symbolic
|| h
->dynindx
== -1)
2888 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2889 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2893 BFD_ASSERT (h
->dynindx
!= -1);
2894 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2895 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2899 loc
= sreloc
->contents
;
2900 loc
+= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
2901 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2902 ++sreloc
->reloc_count
;
2904 /* If this reloc is against an external symbol, we do
2905 not want to fiddle with the addend. Otherwise, we
2906 need to include the symbol value so that it becomes
2907 an addend for the dynamic reloc. */
2912 else if (r_type
!= R_M32R_10_PCREL_RELA
)
2916 case (int) R_M32R_10_PCREL
:
2917 r
= m32r_elf_do_10_pcrel_reloc (input_bfd
, howto
, input_section
,
2919 sec
, relocation
, addend
);
2922 case (int) R_M32R_HI16_SLO
:
2923 case (int) R_M32R_HI16_ULO
:
2925 Elf_Internal_Rela
*lorel
;
2927 /* We allow an arbitrary number of HI16 relocs before the
2928 LO16 reloc. This permits gcc to emit the HI and LO relocs
2930 for (lorel
= rel
+ 1;
2932 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2933 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2937 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2939 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2940 contents
, relocation
+ addend
);
2944 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2946 relocation
, addend
);
2951 case (int) R_M32R_SDA16_RELA
:
2952 case (int) R_M32R_SDA16
:
2956 BFD_ASSERT (sec
!= NULL
);
2957 name
= bfd_get_section_name (sec
->owner
, sec
);
2959 if ( strcmp (name
, ".sdata") == 0
2960 || strcmp (name
, ".sbss") == 0
2961 || strcmp (name
, ".scommon") == 0)
2964 bfd
*out_bfd
= sec
->output_section
->owner
;
2966 r
= m32r_elf_final_sda_base (out_bfd
, info
,
2969 if (r
!= bfd_reloc_ok
)
2975 /* At this point `relocation' contains the object's
2977 relocation
-= sda_base
;
2978 /* Now it contains the offset from _SDA_BASE_. */
2983 /* xgettext:c-format */
2984 (_("%pB: the target (%s) of an %s relocation"
2985 " is in the wrong section (%pA)"),
2988 m32r_elf_howto_table
[(int) r_type
].name
,
2990 /*bfd_set_error (bfd_error_bad_value); ??? why? */
2997 default : /* OLD_M32R_RELOC */
2999 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3001 relocation
, addend
);
3005 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3006 contents
, rel
->r_offset
,
3007 relocation
, rel
->r_addend
);
3013 if (r
!= bfd_reloc_ok
)
3015 /* FIXME: This should be generic enough to go in a utility. */
3019 name
= h
->root
.root
.string
;
3022 name
= (bfd_elf_string_from_elf_section
3023 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
3024 if (name
== NULL
|| *name
== '\0')
3025 name
= bfd_section_name (input_bfd
, sec
);
3033 case bfd_reloc_overflow
:
3034 (*info
->callbacks
->reloc_overflow
)
3035 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3036 (bfd_vma
) 0, input_bfd
, input_section
, offset
);
3039 case bfd_reloc_undefined
:
3040 (*info
->callbacks
->undefined_symbol
)
3041 (info
, name
, input_bfd
, input_section
, offset
, TRUE
);
3044 case bfd_reloc_outofrange
:
3045 errmsg
= _("internal error: out of range error");
3048 case bfd_reloc_notsupported
:
3049 errmsg
= _("internal error: unsupported relocation error");
3052 case bfd_reloc_dangerous
:
3053 errmsg
= _("internal error: dangerous error");
3057 errmsg
= _("internal error: unknown error");
3061 (*info
->callbacks
->warning
) (info
, errmsg
, name
, input_bfd
,
3062 input_section
, offset
);
3071 /* Finish up dynamic symbol handling. We set the contents of various
3072 dynamic sections here. */
3075 m32r_elf_finish_dynamic_symbol (bfd
*output_bfd
,
3076 struct bfd_link_info
*info
,
3077 struct elf_link_hash_entry
*h
,
3078 Elf_Internal_Sym
*sym
)
3080 struct elf_m32r_link_hash_table
*htab
;
3084 printf ("m32r_elf_finish_dynamic_symbol()\n");
3087 htab
= m32r_elf_hash_table (info
);
3091 if (h
->plt
.offset
!= (bfd_vma
) -1)
3099 Elf_Internal_Rela rela
;
3101 /* This symbol has an entry in the procedure linkage table. Set
3104 BFD_ASSERT (h
->dynindx
!= -1);
3106 splt
= htab
->root
.splt
;
3107 sgot
= htab
->root
.sgotplt
;
3108 srela
= htab
->root
.srelplt
;
3109 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
3111 /* Get the index in the procedure linkage table which
3112 corresponds to this symbol. This is the index of this symbol
3113 in all the symbols for which we are making plt entries. The
3114 first entry in the procedure linkage table is reserved. */
3115 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
3117 /* Get the offset into the .got table of the entry that
3118 corresponds to this function. Each .got entry is 4 bytes.
3119 The first three are reserved. */
3120 got_offset
= (plt_index
+ 3) * 4;
3122 /* Fill in the entry in the procedure linkage table. */
3123 if (! bfd_link_pic (info
))
3125 bfd_put_32 (output_bfd
,
3127 + (((sgot
->output_section
->vma
3128 + sgot
->output_offset
3129 + got_offset
) >> 16) & 0xffff)),
3130 splt
->contents
+ h
->plt
.offset
);
3131 bfd_put_32 (output_bfd
,
3133 + ((sgot
->output_section
->vma
3134 + sgot
->output_offset
3135 + got_offset
) & 0xffff)),
3136 splt
->contents
+ h
->plt
.offset
+ 4);
3137 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3138 splt
->contents
+ h
->plt
.offset
+ 8);
3139 bfd_put_32 (output_bfd
,
3141 + plt_index
* sizeof (Elf32_External_Rela
)),
3142 splt
->contents
+ h
->plt
.offset
+ 12);
3143 bfd_put_32 (output_bfd
,
3145 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3146 splt
->contents
+ h
->plt
.offset
+ 16);
3150 bfd_put_32 (output_bfd
,
3151 PLT_ENTRY_WORD0
+ got_offset
,
3152 splt
->contents
+ h
->plt
.offset
);
3153 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
,
3154 splt
->contents
+ h
->plt
.offset
+ 4);
3155 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3156 splt
->contents
+ h
->plt
.offset
+ 8);
3157 bfd_put_32 (output_bfd
,
3159 + plt_index
* sizeof (Elf32_External_Rela
)),
3160 splt
->contents
+ h
->plt
.offset
+ 12);
3161 bfd_put_32 (output_bfd
,
3163 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3164 splt
->contents
+ h
->plt
.offset
+ 16);
3167 /* Fill in the entry in the global offset table. */
3168 bfd_put_32 (output_bfd
,
3169 (splt
->output_section
->vma
3170 + splt
->output_offset
3172 + 12), /* same offset */
3173 sgot
->contents
+ got_offset
);
3175 /* Fill in the entry in the .rela.plt section. */
3176 rela
.r_offset
= (sgot
->output_section
->vma
3177 + sgot
->output_offset
3179 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_JMP_SLOT
);
3181 loc
= srela
->contents
;
3182 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
3183 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3185 if (!h
->def_regular
)
3187 /* Mark the symbol as undefined, rather than as defined in
3188 the .plt section. Leave the value alone. */
3189 sym
->st_shndx
= SHN_UNDEF
;
3193 if (h
->got
.offset
!= (bfd_vma
) -1)
3197 Elf_Internal_Rela rela
;
3199 /* This symbol has an entry in the global offset table. Set it
3202 sgot
= htab
->root
.sgot
;
3203 srela
= htab
->root
.srelgot
;
3204 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
3206 rela
.r_offset
= (sgot
->output_section
->vma
3207 + sgot
->output_offset
3208 + (h
->got
.offset
&~ 1));
3210 /* If this is a -Bsymbolic link, and the symbol is defined
3211 locally, we just want to emit a RELATIVE reloc. Likewise if
3212 the symbol was forced to be local because of a version file.
3213 The entry in the global offset table will already have been
3214 initialized in the relocate_section function. */
3215 if (bfd_link_pic (info
)
3221 rela
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
3222 rela
.r_addend
= (h
->root
.u
.def
.value
3223 + h
->root
.u
.def
.section
->output_section
->vma
3224 + h
->root
.u
.def
.section
->output_offset
);
3228 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
3229 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
3230 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_GLOB_DAT
);
3234 loc
= srela
->contents
;
3235 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
3236 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3237 ++srela
->reloc_count
;
3243 Elf_Internal_Rela rela
;
3245 /* This symbols needs a copy reloc. Set it up. */
3247 BFD_ASSERT (h
->dynindx
!= -1
3248 && (h
->root
.type
== bfd_link_hash_defined
3249 || h
->root
.type
== bfd_link_hash_defweak
));
3251 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
3252 BFD_ASSERT (s
!= NULL
);
3254 rela
.r_offset
= (h
->root
.u
.def
.value
3255 + h
->root
.u
.def
.section
->output_section
->vma
3256 + h
->root
.u
.def
.section
->output_offset
);
3257 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_COPY
);
3260 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
3261 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3265 /* Mark some specially defined symbols as absolute. */
3266 if (h
== htab
->root
.hdynamic
|| h
== htab
->root
.hgot
)
3267 sym
->st_shndx
= SHN_ABS
;
3273 /* Finish up the dynamic sections. */
3276 m32r_elf_finish_dynamic_sections (bfd
*output_bfd
,
3277 struct bfd_link_info
*info
)
3279 struct elf_m32r_link_hash_table
*htab
;
3285 printf ("m32r_elf_finish_dynamic_sections()\n");
3288 htab
= m32r_elf_hash_table (info
);
3292 dynobj
= htab
->root
.dynobj
;
3294 sgot
= htab
->root
.sgotplt
;
3295 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3297 if (htab
->root
.dynamic_sections_created
)
3300 Elf32_External_Dyn
*dyncon
, *dynconend
;
3302 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
3304 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3305 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3307 for (; dyncon
< dynconend
; dyncon
++)
3309 Elf_Internal_Dyn dyn
;
3312 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3320 s
= htab
->root
.sgotplt
;
3323 s
= htab
->root
.srelplt
;
3325 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3326 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3330 s
= htab
->root
.srelplt
;
3331 dyn
.d_un
.d_val
= s
->size
;
3332 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3337 /* Fill in the first entry in the procedure linkage table. */
3338 splt
= htab
->root
.splt
;
3339 if (splt
&& splt
->size
> 0)
3341 if (bfd_link_pic (info
))
3343 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
3344 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
3345 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
3346 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
3347 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
3352 /* addr = .got + 4 */
3353 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
3354 bfd_put_32 (output_bfd
,
3355 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
3357 bfd_put_32 (output_bfd
,
3358 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
3359 splt
->contents
+ 4);
3360 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
3361 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
3362 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
3365 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
3370 /* Fill in the first three entries in the global offset table. */
3371 if (sgot
&& sgot
->size
> 0)
3374 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
3376 bfd_put_32 (output_bfd
,
3377 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
3379 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
3380 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
3382 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3389 /* Set the right machine number. */
3392 m32r_elf_object_p (bfd
*abfd
)
3394 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3397 case E_M32R_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r
); break;
3398 case E_M32RX_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32rx
); break;
3399 case E_M32R2_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r2
); break;
3404 /* Store the machine number in the flags field. */
3407 m32r_elf_final_write_processing (bfd
*abfd
,
3408 bfd_boolean linker ATTRIBUTE_UNUSED
)
3412 switch (bfd_get_mach (abfd
))
3415 case bfd_mach_m32r
: val
= E_M32R_ARCH
; break;
3416 case bfd_mach_m32rx
: val
= E_M32RX_ARCH
; break;
3417 case bfd_mach_m32r2
: val
= E_M32R2_ARCH
; break;
3420 elf_elfheader (abfd
)->e_flags
&=~ EF_M32R_ARCH
;
3421 elf_elfheader (abfd
)->e_flags
|= val
;
3424 /* Function to keep M32R specific file flags. */
3427 m32r_elf_set_private_flags (bfd
*abfd
, flagword flags
)
3429 BFD_ASSERT (!elf_flags_init (abfd
)
3430 || elf_elfheader (abfd
)->e_flags
== flags
);
3432 elf_elfheader (abfd
)->e_flags
= flags
;
3433 elf_flags_init (abfd
) = TRUE
;
3437 /* Merge backend specific data from an object file to the output
3438 object file when linking. */
3441 m32r_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3443 bfd
*obfd
= info
->output_bfd
;
3447 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3448 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3451 in_flags
= elf_elfheader (ibfd
)->e_flags
;
3452 out_flags
= elf_elfheader (obfd
)->e_flags
;
3454 if (! elf_flags_init (obfd
))
3456 /* If the input is the default architecture then do not
3457 bother setting the flags for the output architecture,
3458 instead allow future merges to do this. If no future
3459 merges ever set these flags then they will retain their
3460 unitialised values, which surprise surprise, correspond
3461 to the default values. */
3462 if (bfd_get_arch_info (ibfd
)->the_default
)
3465 elf_flags_init (obfd
) = TRUE
;
3466 elf_elfheader (obfd
)->e_flags
= in_flags
;
3468 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
3469 && bfd_get_arch_info (obfd
)->the_default
)
3470 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
3471 bfd_get_mach (ibfd
));
3476 /* Check flag compatibility. */
3477 if (in_flags
== out_flags
)
3480 if ((in_flags
& EF_M32R_ARCH
) != (out_flags
& EF_M32R_ARCH
))
3482 if ( ((in_flags
& EF_M32R_ARCH
) != E_M32R_ARCH
)
3483 || ((out_flags
& EF_M32R_ARCH
) == E_M32R_ARCH
)
3484 || ((in_flags
& EF_M32R_ARCH
) == E_M32R2_ARCH
))
3487 (_("%pB: instruction set mismatch with previous modules"), ibfd
);
3489 bfd_set_error (bfd_error_bad_value
);
3497 /* Display the flags field. */
3500 m32r_elf_print_private_bfd_data (bfd
*abfd
, void * ptr
)
3502 FILE * file
= (FILE *) ptr
;
3504 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
3506 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
3508 fprintf (file
, _("private flags = %lx"), elf_elfheader (abfd
)->e_flags
);
3510 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3513 case E_M32R_ARCH
: fprintf (file
, _(": m32r instructions")); break;
3514 case E_M32RX_ARCH
: fprintf (file
, _(": m32rx instructions")); break;
3515 case E_M32R2_ARCH
: fprintf (file
, _(": m32r2 instructions")); break;
3524 m32r_elf_gc_mark_hook (asection
*sec
,
3525 struct bfd_link_info
*info
,
3526 Elf_Internal_Rela
*rel
,
3527 struct elf_link_hash_entry
*h
,
3528 Elf_Internal_Sym
*sym
)
3531 switch (ELF32_R_TYPE (rel
->r_info
))
3533 case R_M32R_GNU_VTINHERIT
:
3534 case R_M32R_GNU_VTENTRY
:
3535 case R_M32R_RELA_GNU_VTINHERIT
:
3536 case R_M32R_RELA_GNU_VTENTRY
:
3540 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3543 /* Look through the relocs for a section during the first phase.
3544 Since we don't do .gots or .plts, we just need to consider the
3545 virtual table relocs for gc. */
3548 m32r_elf_check_relocs (bfd
*abfd
,
3549 struct bfd_link_info
*info
,
3551 const Elf_Internal_Rela
*relocs
)
3553 Elf_Internal_Shdr
*symtab_hdr
;
3554 struct elf_link_hash_entry
**sym_hashes
;
3555 const Elf_Internal_Rela
*rel
;
3556 const Elf_Internal_Rela
*rel_end
;
3557 struct elf_m32r_link_hash_table
*htab
;
3561 if (bfd_link_relocatable (info
))
3564 /* Don't do anything special with non-loaded, non-alloced sections.
3565 In particular, any relocs in such sections should not affect GOT
3566 and PLT reference counting (ie. we don't allow them to create GOT
3567 or PLT entries), there's no possibility or desire to optimize TLS
3568 relocs, and there's not much point in propagating relocs to shared
3569 libs that the dynamic linker won't relocate. */
3570 if ((sec
->flags
& SEC_ALLOC
) == 0)
3574 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3575 sym_hashes
= elf_sym_hashes (abfd
);
3577 htab
= m32r_elf_hash_table (info
);
3581 dynobj
= htab
->root
.dynobj
;
3583 rel_end
= relocs
+ sec
->reloc_count
;
3584 for (rel
= relocs
; rel
< rel_end
; rel
++)
3587 struct elf_link_hash_entry
*h
;
3588 unsigned long r_symndx
;
3590 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3591 r_type
= ELF32_R_TYPE (rel
->r_info
);
3592 if (r_symndx
< symtab_hdr
->sh_info
)
3596 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3597 while (h
->root
.type
== bfd_link_hash_indirect
3598 || h
->root
.type
== bfd_link_hash_warning
)
3599 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3602 /* Some relocs require a global offset table. */
3603 if (htab
->root
.sgot
== NULL
)
3607 case R_M32R_GOT16_HI_ULO
:
3608 case R_M32R_GOT16_HI_SLO
:
3610 case R_M32R_GOTOFF_HI_ULO
:
3611 case R_M32R_GOTOFF_HI_SLO
:
3612 case R_M32R_GOTOFF_LO
:
3613 case R_M32R_GOT16_LO
:
3614 case R_M32R_GOTPC24
:
3615 case R_M32R_GOTPC_HI_ULO
:
3616 case R_M32R_GOTPC_HI_SLO
:
3617 case R_M32R_GOTPC_LO
:
3620 htab
->root
.dynobj
= dynobj
= abfd
;
3621 if (!_bfd_elf_create_got_section (dynobj
, info
))
3632 case R_M32R_GOT16_HI_ULO
:
3633 case R_M32R_GOT16_HI_SLO
:
3634 case R_M32R_GOT16_LO
:
3638 h
->got
.refcount
+= 1;
3641 bfd_signed_vma
*local_got_refcounts
;
3643 /* This is a global offset table entry for a local
3645 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3646 if (local_got_refcounts
== NULL
)
3650 size
= symtab_hdr
->sh_info
;
3651 size
*= sizeof (bfd_signed_vma
);
3652 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3653 if (local_got_refcounts
== NULL
)
3655 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3657 local_got_refcounts
[r_symndx
] += 1;
3661 case R_M32R_26_PLTREL
:
3662 /* This symbol requires a procedure linkage table entry. We
3663 actually build the entry in adjust_dynamic_symbol,
3664 because this might be a case of linking PIC code without
3665 linking in any dynamic objects, in which case we don't
3666 need to generate a procedure linkage table after all. */
3668 /* If this is a local symbol, we resolve it directly without
3669 creating a procedure linkage table entry. */
3673 if (h
->forced_local
)
3677 h
->plt
.refcount
+= 1;
3680 case R_M32R_16_RELA
:
3681 case R_M32R_24_RELA
:
3682 case R_M32R_32_RELA
:
3684 case R_M32R_HI16_ULO_RELA
:
3685 case R_M32R_HI16_SLO_RELA
:
3686 case R_M32R_LO16_RELA
:
3687 case R_M32R_SDA16_RELA
:
3688 case R_M32R_10_PCREL_RELA
:
3689 case R_M32R_18_PCREL_RELA
:
3690 case R_M32R_26_PCREL_RELA
:
3692 if (h
!= NULL
&& !bfd_link_pic (info
))
3695 h
->plt
.refcount
+= 1;
3698 /* If we are creating a shared library, and this is a reloc
3699 against a global symbol, or a non PC relative reloc
3700 against a local symbol, then we need to copy the reloc
3701 into the shared library. However, if we are linking with
3702 -Bsymbolic, we do not need to copy a reloc against a
3703 global symbol which is defined in an object we are
3704 including in the link (i.e., DEF_REGULAR is set). At
3705 this point we have not seen all the input files, so it is
3706 possible that DEF_REGULAR is not set now but will be set
3707 later (it is never cleared). We account for that
3708 possibility below by storing information in the
3709 dyn_relocs field of the hash table entry. A similar
3710 situation occurs when creating shared libraries and symbol
3711 visibility changes render the symbol local.
3713 If on the other hand, we are creating an executable, we
3714 may need to keep relocations for symbols satisfied by a
3715 dynamic library if we manage to avoid copy relocs for the
3717 if ((bfd_link_pic (info
)
3718 && (sec
->flags
& SEC_ALLOC
) != 0
3719 && (( r_type
!= R_M32R_26_PCREL_RELA
3720 && r_type
!= R_M32R_18_PCREL_RELA
3721 && r_type
!= R_M32R_10_PCREL_RELA
3722 && r_type
!= R_M32R_REL32
)
3724 && (! info
->symbolic
3725 || h
->root
.type
== bfd_link_hash_defweak
3726 || !h
->def_regular
))))
3727 || (!bfd_link_pic (info
)
3728 && (sec
->flags
& SEC_ALLOC
) != 0
3730 && (h
->root
.type
== bfd_link_hash_defweak
3731 || !h
->def_regular
)))
3733 struct elf_dyn_relocs
*p
;
3734 struct elf_dyn_relocs
**head
;
3737 htab
->root
.dynobj
= dynobj
= abfd
;
3739 /* When creating a shared object, we must copy these
3740 relocs into the output file. We create a reloc
3741 section in dynobj and make room for the reloc. */
3744 sreloc
= _bfd_elf_make_dynamic_reloc_section
3745 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
3751 /* If this is a global symbol, we count the number of
3752 relocations we need for this symbol. */
3754 head
= &((struct elf_m32r_link_hash_entry
*) h
)->dyn_relocs
;
3757 /* Track dynamic relocs needed for local syms too. */
3760 Elf_Internal_Sym
*isym
;
3762 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3767 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3771 vpp
= &elf_section_data (s
)->local_dynrel
;
3772 head
= (struct elf_dyn_relocs
**) vpp
;
3776 if (p
== NULL
|| p
->sec
!= sec
)
3778 bfd_size_type amt
= sizeof (*p
);
3780 p
= bfd_alloc (dynobj
, amt
);
3791 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
3792 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
3793 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
3794 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
3799 /* This relocation describes the C++ object vtable hierarchy.
3800 Reconstruct it for later use during GC. */
3801 case R_M32R_RELA_GNU_VTINHERIT
:
3802 case R_M32R_GNU_VTINHERIT
:
3803 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3807 /* This relocation describes which C++ vtable entries are actually
3808 used. Record for later use during GC. */
3809 case R_M32R_GNU_VTENTRY
:
3810 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
3813 case R_M32R_RELA_GNU_VTENTRY
:
3814 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3823 static const struct bfd_elf_special_section m32r_elf_special_sections
[] =
3825 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3826 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3827 { NULL
, 0, 0, 0, 0 }
3830 static enum elf_reloc_type_class
3831 m32r_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3832 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3833 const Elf_Internal_Rela
*rela
)
3835 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3837 case R_M32R_RELATIVE
: return reloc_class_relative
;
3838 case R_M32R_JMP_SLOT
: return reloc_class_plt
;
3839 case R_M32R_COPY
: return reloc_class_copy
;
3840 default: return reloc_class_normal
;
3844 #define ELF_ARCH bfd_arch_m32r
3845 #define ELF_TARGET_ID M32R_ELF_DATA
3846 #define ELF_MACHINE_CODE EM_M32R
3847 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
3848 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
3850 #define TARGET_BIG_SYM m32r_elf32_vec
3851 #define TARGET_BIG_NAME "elf32-m32r"
3852 #define TARGET_LITTLE_SYM m32r_elf32_le_vec
3853 #define TARGET_LITTLE_NAME "elf32-m32rle"
3855 #define elf_info_to_howto m32r_info_to_howto
3856 #define elf_info_to_howto_rel m32r_info_to_howto_rel
3857 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
3858 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
3859 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
3860 #define elf_backend_relocate_section m32r_elf_relocate_section
3861 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
3862 #define elf_backend_check_relocs m32r_elf_check_relocs
3864 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
3865 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
3866 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
3867 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
3868 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
3869 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
3870 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
3871 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
3872 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
3874 #define elf_backend_can_gc_sections 1
3876 #define elf_backend_rela_normal 1
3878 #define elf_backend_can_refcount 1
3879 #define elf_backend_want_got_plt 1
3880 #define elf_backend_plt_readonly 1
3881 #define elf_backend_want_plt_sym 0
3882 #define elf_backend_got_header_size 12
3883 #define elf_backend_dtrel_excludes_plt 1
3885 #define elf_backend_may_use_rel_p 1
3886 #ifdef USE_M32R_OLD_RELOC
3887 #define elf_backend_default_use_rela_p 0
3888 #define elf_backend_may_use_rela_p 0
3890 #define elf_backend_default_use_rela_p 1
3891 #define elf_backend_may_use_rela_p 1
3894 #define elf_backend_object_p m32r_elf_object_p
3895 #define elf_backend_final_write_processing m32r_elf_final_write_processing
3896 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
3897 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
3898 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
3899 #define elf_backend_special_sections m32r_elf_special_sections
3901 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
3903 #include "elf32-target.h"
3905 #undef ELF_MAXPAGESIZE
3906 #define ELF_MAXPAGESIZE 0x1000
3908 #undef TARGET_BIG_SYM
3909 #define TARGET_BIG_SYM m32r_elf32_linux_vec
3910 #undef TARGET_BIG_NAME
3911 #define TARGET_BIG_NAME "elf32-m32r-linux"
3912 #undef TARGET_LITTLE_SYM
3913 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
3914 #undef TARGET_LITTLE_NAME
3915 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
3917 #define elf32_bed elf32_m32r_lin_bed
3919 #include "elf32-target.h"