1 /* M32R-specific support for 32-bit ELF.
2 Copyright (C) 1996-2020 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
41 /* Functions for the M32R ELF linker. */
43 /* The name of the dynamic interpreter. This is put in the .interp
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
48 /* The nop opcode we use. */
50 #define M32R_NOP 0x7000f000
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
54 /* The size in bytes of an entry in the procedure linkage table. */
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd
*abfd
,
88 reloc_howto_type
*howto
,
89 asection
*input_section
,
92 asection
*symbol_section ATTRIBUTE_UNUSED
,
96 bfd_signed_vma relocation
;
98 bfd_reloc_status_type status
;
100 /* Sanity check the address (offset in section). */
101 if (offset
> bfd_get_section_limit (abfd
, input_section
))
102 return bfd_reloc_outofrange
;
104 relocation
= symbol_value
+ addend
;
105 /* Make it pc relative. */
106 relocation
-= (input_section
->output_section
->vma
107 + input_section
->output_offset
);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation
-= (offset
& -(bfd_vma
) 4);
112 if (relocation
< -0x200 || relocation
> 0x1ff)
113 status
= bfd_reloc_overflow
;
115 status
= bfd_reloc_ok
;
117 x
= bfd_get_16 (abfd
, data
+ offset
);
118 relocation
>>= howto
->rightshift
;
119 relocation
<<= howto
->bitpos
;
120 x
= (x
& ~howto
->dst_mask
) | (((x
& howto
->src_mask
) + relocation
) & howto
->dst_mask
);
121 bfd_put_16 (abfd
, (bfd_vma
) x
, data
+ offset
);
126 /* Handle the R_M32R_10_PCREL reloc. */
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd
* abfd
,
130 arelent
* reloc_entry
,
133 asection
* input_section
,
135 char ** error_message ATTRIBUTE_UNUSED
)
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd
!= NULL
139 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
140 && (! reloc_entry
->howto
->partial_inplace
141 || reloc_entry
->addend
== 0))
143 reloc_entry
->address
+= input_section
->output_offset
;
147 if (output_bfd
!= NULL
)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue
;
151 return m32r_elf_do_10_pcrel_reloc (abfd
, reloc_entry
->howto
,
153 data
, reloc_entry
->address
,
156 + symbol
->section
->output_section
->vma
157 + symbol
->section
->output_offset
),
158 reloc_entry
->addend
);
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd
*input_bfd
,
166 arelent
*reloc_entry
,
169 asection
*input_section
,
171 char **error_message ATTRIBUTE_UNUSED
)
173 bfd_reloc_status_type ret
;
175 bfd_byte
*inplace_address
;
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd
!= NULL
181 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
182 && reloc_entry
->addend
== 0)
184 reloc_entry
->address
+= input_section
->output_offset
;
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry
->address
> bfd_get_section_limit (input_bfd
, input_section
))
196 return bfd_reloc_outofrange
;
199 if (bfd_is_und_section (symbol
->section
)
200 && output_bfd
== NULL
)
201 ret
= bfd_reloc_undefined
;
203 if (bfd_is_com_section (symbol
->section
)
204 || output_bfd
!= NULL
)
207 relocation
= symbol
->value
;
209 /* Only do this for a final link. */
210 if (output_bfd
== NULL
)
212 relocation
+= symbol
->section
->output_section
->vma
;
213 relocation
+= symbol
->section
->output_offset
;
216 relocation
+= reloc_entry
->addend
;
217 inplace_address
= (bfd_byte
*) data
+ reloc_entry
->address
;
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
224 switch (reloc_entry
->howto
->size
)
228 short x
= bfd_get_16 (input_bfd
, inplace_address
);
230 bfd_put_16 (input_bfd
, (bfd_vma
) x
, inplace_address
);
235 unsigned long x
= bfd_get_32 (input_bfd
, inplace_address
);
237 bfd_put_32 (input_bfd
, (bfd_vma
)x
, inplace_address
);
244 if (output_bfd
!= NULL
)
245 reloc_entry
->address
+= input_section
->output_offset
;
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
258 arelent
*reloc_entry
,
260 void * data ATTRIBUTE_UNUSED
,
261 asection
*input_section
,
263 char **error_message ATTRIBUTE_UNUSED
)
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd
!= NULL
267 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
268 && (! reloc_entry
->howto
->partial_inplace
269 || reloc_entry
->addend
== 0))
271 reloc_entry
->address
+= input_section
->output_offset
;
275 if (output_bfd
!= NULL
)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue
;
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
303 struct m32r_hi16
*next
;
308 /* FIXME: This should not be a static variable. */
310 static struct m32r_hi16
*m32r_hi16_list
;
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
314 arelent
*reloc_entry
,
317 asection
*input_section
,
319 char **error_message ATTRIBUTE_UNUSED
)
321 bfd_reloc_status_type ret
;
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd
!= NULL
329 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
330 && reloc_entry
->addend
== 0)
332 reloc_entry
->address
+= input_section
->output_offset
;
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
338 return bfd_reloc_outofrange
;
341 if (bfd_is_und_section (symbol
->section
)
342 && output_bfd
== NULL
)
343 ret
= bfd_reloc_undefined
;
345 if (bfd_is_com_section (symbol
->section
))
348 relocation
= symbol
->value
;
350 relocation
+= symbol
->section
->output_section
->vma
;
351 relocation
+= symbol
->section
->output_offset
;
352 relocation
+= reloc_entry
->addend
;
354 /* Save the information, and let LO16 do the actual relocation. */
355 n
= bfd_malloc ((bfd_size_type
) sizeof *n
);
357 return bfd_reloc_outofrange
;
358 n
->addr
= (bfd_byte
*) data
+ reloc_entry
->address
;
359 n
->addend
= relocation
;
360 n
->next
= m32r_hi16_list
;
363 if (output_bfd
!= NULL
)
364 reloc_entry
->address
+= input_section
->output_offset
;
369 /* Handle an M32R ELF HI16 reloc. */
372 m32r_elf_relocate_hi16 (bfd
*input_bfd
,
374 Elf_Internal_Rela
*relhi
,
375 Elf_Internal_Rela
*rello
,
382 insn
= bfd_get_32 (input_bfd
, contents
+ relhi
->r_offset
);
384 addlo
= bfd_get_32 (input_bfd
, contents
+ rello
->r_offset
);
385 if (type
== R_M32R_HI16_SLO
)
386 addlo
= ((addlo
& 0xffff) ^ 0x8000) - 0x8000;
390 addend
+= ((insn
& 0xffff) << 16) + addlo
;
392 /* Reaccount for sign extension of low part. */
393 if (type
== R_M32R_HI16_SLO
394 && (addend
& 0x8000) != 0)
397 bfd_put_32 (input_bfd
,
398 (insn
& 0xffff0000) | ((addend
>> 16) & 0xffff),
399 contents
+ relhi
->r_offset
);
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd
*input_bfd
,
408 arelent
*reloc_entry
,
411 asection
*input_section
,
413 char **error_message
)
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd
!= NULL
419 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
420 && reloc_entry
->addend
== 0)
422 reloc_entry
->address
+= input_section
->output_offset
;
426 if (m32r_hi16_list
!= NULL
)
436 struct m32r_hi16
*next
;
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn
= bfd_get_32 (input_bfd
, l
->addr
);
442 vallo
= ((bfd_get_32 (input_bfd
, (bfd_byte
*) data
+ reloc_entry
->address
)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val
= ((insn
& 0xffff) << 16) + vallo
;
447 /* Reaccount for sign extension of low part. */
448 if ((val
& 0x8000) != 0)
451 insn
= (insn
&~ (bfd_vma
) 0xffff) | ((val
>> 16) & 0xffff);
452 bfd_put_32 (input_bfd
, (bfd_vma
) insn
, l
->addr
);
459 m32r_hi16_list
= NULL
;
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd
, reloc_entry
, symbol
, data
,
468 input_section
, output_bfd
, error_message
);
472 static reloc_howto_type m32r_elf_howto_table
[] =
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE
, /* type */
477 3, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE
, /* pc_relative */
481 complain_overflow_dont
, /* complain_on_overflow */
482 bfd_elf_generic_reloc
, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE
, /* partial_inplace */
487 FALSE
), /* pcrel_offset */
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16
, /* type */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
494 FALSE
, /* pc_relative */
496 complain_overflow_bitfield
, /* complain_on_overflow */
497 m32r_elf_generic_reloc
,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE
, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE
), /* pcrel_offset */
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32
, /* type */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
509 FALSE
, /* pc_relative */
511 complain_overflow_bitfield
, /* complain_on_overflow */
512 m32r_elf_generic_reloc
,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE
, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE
), /* pcrel_offset */
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24
, /* type */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
524 FALSE
, /* pc_relative */
526 complain_overflow_unsigned
, /* complain_on_overflow */
527 m32r_elf_generic_reloc
,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE
, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE
), /* pcrel_offset */
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
542 HOWTO (R_M32R_10_PCREL
, /* type */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
546 TRUE
, /* pc_relative */
548 complain_overflow_signed
, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc
, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE
, /* partial_inplace */
554 TRUE
), /* pcrel_offset */
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL
, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 TRUE
, /* pc_relative */
563 complain_overflow_signed
, /* complain_on_overflow */
564 bfd_elf_generic_reloc
, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE
, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE
), /* pcrel_offset */
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
576 HOWTO (R_M32R_26_PCREL
, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 TRUE
, /* pc_relative */
582 complain_overflow_signed
, /* complain_on_overflow */
583 bfd_elf_generic_reloc
, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE
, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE
), /* pcrel_offset */
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO
, /* type */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE
, /* pc_relative */
597 complain_overflow_dont
, /* complain_on_overflow */
598 m32r_elf_hi16_reloc
, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE
, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE
), /* pcrel_offset */
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO
, /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 FALSE
, /* pc_relative */
612 complain_overflow_dont
, /* complain_on_overflow */
613 m32r_elf_hi16_reloc
, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE
, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE
), /* pcrel_offset */
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16
, /* type */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
625 FALSE
, /* pc_relative */
627 complain_overflow_dont
, /* complain_on_overflow */
628 m32r_elf_lo16_reloc
, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE
, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE
), /* pcrel_offset */
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16
, /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE
, /* pc_relative */
642 complain_overflow_signed
, /* complain_on_overflow */
643 m32r_elf_sda16_reloc
, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE
, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE
), /* pcrel_offset */
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT
, /* type */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE
, /* pc_relative */
657 complain_overflow_dont
, /* complain_on_overflow */
658 NULL
, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE
, /* partial_inplace */
663 FALSE
), /* pcrel_offset */
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY
, /* type */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE
, /* pc_relative */
672 complain_overflow_dont
, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE
, /* partial_inplace */
678 FALSE
), /* pcrel_offset */
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA
, /* type */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE
, /* pc_relative */
708 complain_overflow_bitfield
, /* complain_on_overflow */
709 bfd_elf_generic_reloc
, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE
, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE
), /* pcrel_offset */
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA
, /* type */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
721 FALSE
, /* pc_relative */
723 complain_overflow_bitfield
, /* complain_on_overflow */
724 bfd_elf_generic_reloc
,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE
, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE
), /* pcrel_offset */
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA
, /* type */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
736 FALSE
, /* pc_relative */
738 complain_overflow_unsigned
, /* complain_on_overflow */
739 bfd_elf_generic_reloc
,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE
, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE
), /* pcrel_offset */
746 HOWTO (R_M32R_10_PCREL_RELA
, /* type */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
750 TRUE
, /* pc_relative */
752 complain_overflow_signed
, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc
, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE
, /* partial_inplace */
758 TRUE
), /* pcrel_offset */
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA
, /* type */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
765 TRUE
, /* pc_relative */
767 complain_overflow_signed
, /* complain_on_overflow */
768 bfd_elf_generic_reloc
, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE
, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE
), /* pcrel_offset */
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA
, /* type */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
780 TRUE
, /* pc_relative */
782 complain_overflow_signed
, /* complain_on_overflow */
783 bfd_elf_generic_reloc
, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE
, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE
), /* pcrel_offset */
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA
, /* type */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_dont
, /* complain_on_overflow */
798 bfd_elf_generic_reloc
, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE
, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA
, /* type */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE
, /* pc_relative */
812 complain_overflow_dont
, /* complain_on_overflow */
813 bfd_elf_generic_reloc
, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE
, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE
), /* pcrel_offset */
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA
, /* type */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE
, /* pc_relative */
827 complain_overflow_dont
, /* complain_on_overflow */
828 bfd_elf_generic_reloc
, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE
, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE
), /* pcrel_offset */
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA
, /* type */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
840 FALSE
, /* pc_relative */
842 complain_overflow_signed
, /* complain_on_overflow */
843 bfd_elf_generic_reloc
, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE
, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE
), /* pcrel_offset */
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT
, /* type */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
855 FALSE
, /* pc_relative */
857 complain_overflow_dont
, /* complain_on_overflow */
858 NULL
, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE
, /* partial_inplace */
863 FALSE
), /* pcrel_offset */
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY
, /* type */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
870 FALSE
, /* pc_relative */
872 complain_overflow_dont
, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE
, /* partial_inplace */
878 FALSE
), /* pcrel_offset */
880 /* A 32 bit PC relative relocation. */
881 HOWTO (R_M32R_REL32
, /* type */
883 2, /* size (0 = byte, 1 = short, 2 = long) */
885 TRUE
, /* pc_relative */
887 complain_overflow_bitfield
, /* complain_on_overflow */
888 bfd_elf_generic_reloc
,/* special_function */
889 "R_M32R_REL32", /* name */
890 FALSE
, /* partial_inplace */
891 0xffffffff, /* src_mask */
892 0xffffffff, /* dst_mask */
893 TRUE
), /* pcrel_offset */
898 /* Like R_M32R_24, but referring to the GOT table entry for
900 HOWTO (R_M32R_GOT24
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE
, /* pc_relative */
906 complain_overflow_unsigned
, /* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_M32R_GOT24", /* name */
909 FALSE
, /* partial_inplace */
910 0xffffff, /* src_mask */
911 0xffffff, /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* Like R_M32R_PCREL, but referring to the procedure linkage table
915 entry for the symbol. */
916 HOWTO (R_M32R_26_PLTREL
, /* type */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
920 TRUE
, /* pc_relative */
922 complain_overflow_signed
, /* complain_on_overflow */
923 bfd_elf_generic_reloc
, /* special_function */
924 "R_M32R_26_PLTREL", /* name */
925 FALSE
, /* partial_inplace */
926 0xffffff, /* src_mask */
927 0xffffff, /* dst_mask */
928 TRUE
), /* pcrel_offset */
930 /* This is used only by the dynamic linker. The symbol should exist
931 both in the object being run and in some shared library. The
932 dynamic linker copies the data addressed by the symbol from the
933 shared library into the object, because the object being
934 run has to have the data at some particular address. */
935 HOWTO (R_M32R_COPY
, /* type */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE
, /* pc_relative */
941 complain_overflow_bitfield
, /* complain_on_overflow */
942 bfd_elf_generic_reloc
, /* special_function */
943 "R_M32R_COPY", /* name */
944 FALSE
, /* partial_inplace */
945 0xffffffff, /* src_mask */
946 0xffffffff, /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* Like R_M32R_24, but used when setting global offset table
951 HOWTO (R_M32R_GLOB_DAT
, /* type */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE
, /* pc_relative */
957 complain_overflow_bitfield
, /* complain_on_overflow */
958 bfd_elf_generic_reloc
, /* special_function */
959 "R_M32R_GLOB_DAT", /* name */
960 FALSE
, /* partial_inplace */
961 0xffffffff, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE
), /* pcrel_offset */
965 /* Marks a procedure linkage table entry for a symbol. */
966 HOWTO (R_M32R_JMP_SLOT
, /* type */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
970 FALSE
, /* pc_relative */
972 complain_overflow_bitfield
, /* complain_on_overflow */
973 bfd_elf_generic_reloc
, /* special_function */
974 "R_M32R_JMP_SLOT", /* name */
975 FALSE
, /* partial_inplace */
976 0xffffffff, /* src_mask */
977 0xffffffff, /* dst_mask */
978 FALSE
), /* pcrel_offset */
980 /* Used only by the dynamic linker. When the object is run, this
981 longword is set to the load address of the object, plus the
983 HOWTO (R_M32R_RELATIVE
, /* type */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
987 FALSE
, /* pc_relative */
989 complain_overflow_bitfield
, /* complain_on_overflow */
990 bfd_elf_generic_reloc
, /* special_function */
991 "R_M32R_RELATIVE", /* name */
992 FALSE
, /* partial_inplace */
993 0xffffffff, /* src_mask */
994 0xffffffff, /* dst_mask */
995 FALSE
), /* pcrel_offset */
997 HOWTO (R_M32R_GOTOFF
, /* type */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE
, /* pc_relative */
1003 complain_overflow_bitfield
, /* complain_on_overflow */
1004 bfd_elf_generic_reloc
, /* special_function */
1005 "R_M32R_GOTOFF", /* name */
1006 FALSE
, /* partial_inplace */
1007 0xffffff, /* src_mask */
1008 0xffffff, /* dst_mask */
1009 FALSE
), /* pcrel_offset */
1011 /* An PC Relative 24-bit relocation used when setting PIC offset
1013 HOWTO (R_M32R_GOTPC24
, /* type */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 TRUE
, /* pc_relative */
1019 complain_overflow_unsigned
, /* complain_on_overflow */
1020 bfd_elf_generic_reloc
, /* special_function */
1021 "R_M32R_GOTPC24", /* name */
1022 FALSE
, /* partial_inplace */
1023 0xffffff, /* src_mask */
1024 0xffffff, /* dst_mask */
1025 TRUE
), /* pcrel_offset */
1027 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1029 HOWTO (R_M32R_GOT16_HI_ULO
, /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 FALSE
, /* pc_relative */
1035 complain_overflow_dont
, /* complain_on_overflow */
1036 bfd_elf_generic_reloc
, /* special_function */
1037 "R_M32R_GOT16_HI_ULO", /* name */
1038 FALSE
, /* partial_inplace */
1039 0x0000ffff, /* src_mask */
1040 0x0000ffff, /* dst_mask */
1041 FALSE
), /* pcrel_offset */
1043 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1045 HOWTO (R_M32R_GOT16_HI_SLO
, /* type */
1046 16, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1049 FALSE
, /* pc_relative */
1051 complain_overflow_dont
, /* complain_on_overflow */
1052 bfd_elf_generic_reloc
, /* special_function */
1053 "R_M32R_GOT16_HI_SLO", /* name */
1054 FALSE
, /* partial_inplace */
1055 0x0000ffff, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE
), /* pcrel_offset */
1059 /* Like R_M32R_LO16, but referring to the GOT table entry for
1061 HOWTO (R_M32R_GOT16_LO
, /* type */
1063 2, /* size (0 = byte, 1 = short, 2 = long) */
1065 FALSE
, /* pc_relative */
1067 complain_overflow_dont
, /* complain_on_overflow */
1068 bfd_elf_generic_reloc
, /* special_function */
1069 "R_M32R_GOT16_LO", /* name */
1070 FALSE
, /* partial_inplace */
1071 0x0000ffff, /* src_mask */
1072 0x0000ffff, /* dst_mask */
1073 FALSE
), /* pcrel_offset */
1075 /* An PC Relative relocation used when setting PIC offset table register.
1076 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1078 HOWTO (R_M32R_GOTPC_HI_ULO
, /* type */
1079 16, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE
, /* pc_relative */
1084 complain_overflow_dont
, /* complain_on_overflow */
1085 bfd_elf_generic_reloc
, /* special_function */
1086 "R_M32R_GOTPC_HI_ULO", /* name */
1087 FALSE
, /* partial_inplace */
1088 0x0000ffff, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 TRUE
), /* pcrel_offset */
1092 /* An PC Relative relocation used when setting PIC offset table register.
1093 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1095 HOWTO (R_M32R_GOTPC_HI_SLO
, /* type */
1096 16, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE
, /* pc_relative */
1101 complain_overflow_dont
, /* complain_on_overflow */
1102 bfd_elf_generic_reloc
, /* special_function */
1103 "R_M32R_GOTPC_HI_SLO", /* name */
1104 FALSE
, /* partial_inplace */
1105 0x0000ffff, /* src_mask */
1106 0x0000ffff, /* dst_mask */
1107 TRUE
), /* pcrel_offset */
1109 /* An PC Relative relocation used when setting PIC offset table register.
1110 Like R_M32R_LO16, but referring to the GOT table entry for
1112 HOWTO (R_M32R_GOTPC_LO
, /* type */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE
, /* pc_relative */
1118 complain_overflow_dont
, /* complain_on_overflow */
1119 bfd_elf_generic_reloc
, /* special_function */
1120 "R_M32R_GOTPC_LO", /* name */
1121 FALSE
, /* partial_inplace */
1122 0x0000ffff, /* src_mask */
1123 0x0000ffff, /* dst_mask */
1124 TRUE
), /* pcrel_offset */
1126 HOWTO (R_M32R_GOTOFF_HI_ULO
, /* type */
1127 16, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE
, /* pc_relative */
1132 complain_overflow_dont
, /* complain_on_overflow */
1133 bfd_elf_generic_reloc
, /* special_function */
1134 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 FALSE
, /* partial_inplace */
1136 0x0000ffff, /* src_mask */
1137 0x0000ffff, /* dst_mask */
1138 FALSE
), /* pcrel_offset */
1140 HOWTO (R_M32R_GOTOFF_HI_SLO
, /* type */
1141 16, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
1144 FALSE
, /* pc_relative */
1146 complain_overflow_dont
, /* complain_on_overflow */
1147 bfd_elf_generic_reloc
, /* special_function */
1148 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 FALSE
, /* partial_inplace */
1150 0x0000ffff, /* src_mask */
1151 0x0000ffff, /* dst_mask */
1152 FALSE
), /* pcrel_offset */
1154 HOWTO (R_M32R_GOTOFF_LO
, /* type */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1158 FALSE
, /* pc_relative */
1160 complain_overflow_dont
, /* complain_on_overflow */
1161 bfd_elf_generic_reloc
, /* special_function */
1162 "R_M32R_GOTOFF_LO", /* name */
1163 FALSE
, /* partial_inplace */
1164 0x0000ffff, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE
), /* pcrel_offset */
1169 /* Map BFD reloc types to M32R ELF reloc types. */
1171 struct m32r_reloc_map
1173 bfd_reloc_code_real_type bfd_reloc_val
;
1174 unsigned char elf_reloc_val
;
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old
[] =
1180 { BFD_RELOC_NONE
, R_M32R_NONE
},
1181 { BFD_RELOC_16
, R_M32R_16
},
1182 { BFD_RELOC_32
, R_M32R_32
},
1183 { BFD_RELOC_M32R_24
, R_M32R_24
},
1184 { BFD_RELOC_M32R_10_PCREL
, R_M32R_10_PCREL
},
1185 { BFD_RELOC_M32R_18_PCREL
, R_M32R_18_PCREL
},
1186 { BFD_RELOC_M32R_26_PCREL
, R_M32R_26_PCREL
},
1187 { BFD_RELOC_M32R_HI16_ULO
, R_M32R_HI16_ULO
},
1188 { BFD_RELOC_M32R_HI16_SLO
, R_M32R_HI16_SLO
},
1189 { BFD_RELOC_M32R_LO16
, R_M32R_LO16
},
1190 { BFD_RELOC_M32R_SDA16
, R_M32R_SDA16
},
1191 { BFD_RELOC_VTABLE_INHERIT
, R_M32R_GNU_VTINHERIT
},
1192 { BFD_RELOC_VTABLE_ENTRY
, R_M32R_GNU_VTENTRY
},
1195 static const struct m32r_reloc_map m32r_reloc_map
[] =
1197 { BFD_RELOC_NONE
, R_M32R_NONE
},
1198 { BFD_RELOC_16
, R_M32R_16_RELA
},
1199 { BFD_RELOC_32
, R_M32R_32_RELA
},
1200 { BFD_RELOC_M32R_24
, R_M32R_24_RELA
},
1201 { BFD_RELOC_M32R_10_PCREL
, R_M32R_10_PCREL_RELA
},
1202 { BFD_RELOC_M32R_18_PCREL
, R_M32R_18_PCREL_RELA
},
1203 { BFD_RELOC_M32R_26_PCREL
, R_M32R_26_PCREL_RELA
},
1204 { BFD_RELOC_M32R_HI16_ULO
, R_M32R_HI16_ULO_RELA
},
1205 { BFD_RELOC_M32R_HI16_SLO
, R_M32R_HI16_SLO_RELA
},
1206 { BFD_RELOC_M32R_LO16
, R_M32R_LO16_RELA
},
1207 { BFD_RELOC_M32R_SDA16
, R_M32R_SDA16_RELA
},
1208 { BFD_RELOC_VTABLE_INHERIT
, R_M32R_RELA_GNU_VTINHERIT
},
1209 { BFD_RELOC_VTABLE_ENTRY
, R_M32R_RELA_GNU_VTENTRY
},
1210 { BFD_RELOC_32_PCREL
, R_M32R_REL32
},
1212 { BFD_RELOC_M32R_GOT24
, R_M32R_GOT24
},
1213 { BFD_RELOC_M32R_26_PLTREL
, R_M32R_26_PLTREL
},
1214 { BFD_RELOC_M32R_COPY
, R_M32R_COPY
},
1215 { BFD_RELOC_M32R_GLOB_DAT
, R_M32R_GLOB_DAT
},
1216 { BFD_RELOC_M32R_JMP_SLOT
, R_M32R_JMP_SLOT
},
1217 { BFD_RELOC_M32R_RELATIVE
, R_M32R_RELATIVE
},
1218 { BFD_RELOC_M32R_GOTOFF
, R_M32R_GOTOFF
},
1219 { BFD_RELOC_M32R_GOTPC24
, R_M32R_GOTPC24
},
1220 { BFD_RELOC_M32R_GOT16_HI_ULO
, R_M32R_GOT16_HI_ULO
},
1221 { BFD_RELOC_M32R_GOT16_HI_SLO
, R_M32R_GOT16_HI_SLO
},
1222 { BFD_RELOC_M32R_GOT16_LO
, R_M32R_GOT16_LO
},
1223 { BFD_RELOC_M32R_GOTPC_HI_ULO
, R_M32R_GOTPC_HI_ULO
},
1224 { BFD_RELOC_M32R_GOTPC_HI_SLO
, R_M32R_GOTPC_HI_SLO
},
1225 { BFD_RELOC_M32R_GOTPC_LO
, R_M32R_GOTPC_LO
},
1226 { BFD_RELOC_M32R_GOTOFF_HI_ULO
, R_M32R_GOTOFF_HI_ULO
},
1227 { BFD_RELOC_M32R_GOTOFF_HI_SLO
, R_M32R_GOTOFF_HI_SLO
},
1228 { BFD_RELOC_M32R_GOTOFF_LO
, R_M32R_GOTOFF_LO
},
1232 static reloc_howto_type
*
1233 bfd_elf32_bfd_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1234 bfd_reloc_code_real_type code
)
1238 #ifdef USE_M32R_OLD_RELOC
1240 i
< sizeof (m32r_reloc_map_old
) / sizeof (struct m32r_reloc_map
);
1242 if (m32r_reloc_map_old
[i
].bfd_reloc_val
== code
)
1243 return &m32r_elf_howto_table
[m32r_reloc_map_old
[i
].elf_reloc_val
];
1245 #else /* ! USE_M32R_OLD_RELOC */
1248 i
< sizeof (m32r_reloc_map
) / sizeof (struct m32r_reloc_map
);
1250 if (m32r_reloc_map
[i
].bfd_reloc_val
== code
)
1251 return &m32r_elf_howto_table
[m32r_reloc_map
[i
].elf_reloc_val
];
1257 static reloc_howto_type
*
1258 bfd_elf32_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1264 i
< sizeof (m32r_elf_howto_table
) / sizeof (m32r_elf_howto_table
[0]);
1266 if (m32r_elf_howto_table
[i
].name
!= NULL
1267 && strcasecmp (m32r_elf_howto_table
[i
].name
, r_name
) == 0)
1268 return &m32r_elf_howto_table
[i
];
1273 /* Set the howto pointer for an M32R ELF reloc. */
1276 m32r_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
,
1278 Elf_Internal_Rela
*dst
)
1280 unsigned int r_type
;
1282 r_type
= ELF32_R_TYPE (dst
->r_info
);
1283 if (r_type
> (unsigned int) R_M32R_GNU_VTENTRY
)
1285 /* xgettext:c-format */
1286 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
1288 bfd_set_error (bfd_error_bad_value
);
1291 cache_ptr
->howto
= &m32r_elf_howto_table
[r_type
];
1296 m32r_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1298 Elf_Internal_Rela
*dst
)
1300 unsigned int r_type
= ELF32_R_TYPE (dst
->r_info
);
1302 if (r_type
== (unsigned int) R_M32R_NONE
1303 || ((r_type
> (unsigned int) R_M32R_GNU_VTENTRY
)
1304 && (r_type
< (unsigned int) R_M32R_max
)))
1306 cache_ptr
->howto
= &m32r_elf_howto_table
[r_type
];
1310 /* xgettext:c-format */
1311 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd
, r_type
);
1312 bfd_set_error (bfd_error_bad_value
);
1317 /* Given a BFD section, try to locate the corresponding ELF section
1321 _bfd_m32r_elf_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
1325 if (strcmp (bfd_section_name (sec
), ".scommon") == 0)
1327 *retval
= SHN_M32R_SCOMMON
;
1333 /* M32R ELF uses two common sections. One is the usual one, and the other
1334 is for small objects. All the small objects are kept together, and then
1335 referenced via one register, which yields faster assembler code. It is
1336 up to the compiler to emit an instruction to load the register with
1337 _SDA_BASE. This is what we use for the small common section. This
1338 approach is copied from elf32-mips.c. */
1339 static asection m32r_elf_scom_section
;
1340 static asymbol m32r_elf_scom_symbol
;
1341 static asymbol
*m32r_elf_scom_symbol_ptr
;
1343 /* Handle the special M32R section numbers that a symbol may use. */
1346 _bfd_m32r_elf_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
1348 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
1350 switch (elfsym
->internal_elf_sym
.st_shndx
)
1352 case SHN_M32R_SCOMMON
:
1353 if (m32r_elf_scom_section
.name
== NULL
)
1355 /* Initialize the small common section. */
1356 m32r_elf_scom_section
.name
= ".scommon";
1357 m32r_elf_scom_section
.flags
= SEC_IS_COMMON
;
1358 m32r_elf_scom_section
.output_section
= &m32r_elf_scom_section
;
1359 m32r_elf_scom_section
.symbol
= &m32r_elf_scom_symbol
;
1360 m32r_elf_scom_section
.symbol_ptr_ptr
= &m32r_elf_scom_symbol_ptr
;
1361 m32r_elf_scom_symbol
.name
= ".scommon";
1362 m32r_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
1363 m32r_elf_scom_symbol
.section
= &m32r_elf_scom_section
;
1364 m32r_elf_scom_symbol_ptr
= &m32r_elf_scom_symbol
;
1366 asym
->section
= &m32r_elf_scom_section
;
1367 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
1372 /* Hook called by the linker routine which adds symbols from an object
1373 file. We must handle the special M32R section numbers here.
1374 We also keep watching for whether we need to create the sdata special
1378 m32r_elf_add_symbol_hook (bfd
*abfd
,
1379 struct bfd_link_info
*info
,
1380 Elf_Internal_Sym
*sym
,
1382 flagword
*flagsp ATTRIBUTE_UNUSED
,
1386 if (! bfd_link_relocatable (info
)
1387 && (*namep
)[0] == '_' && (*namep
)[1] == 'S'
1388 && strcmp (*namep
, "_SDA_BASE_") == 0
1389 && is_elf_hash_table (info
->hash
))
1391 /* This is simpler than using _bfd_elf_create_linker_section
1392 (our needs are simpler than ppc's needs). Also
1393 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1394 section already exists a new one is created that follows it which
1395 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1396 struct elf_link_hash_entry
*h
;
1397 struct bfd_link_hash_entry
*bh
;
1398 asection
*s
= bfd_get_section_by_name (abfd
, ".sdata");
1400 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1403 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1404 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1406 s
= bfd_make_section_anyway_with_flags (abfd
, ".sdata",
1410 if (!bfd_set_section_alignment (s
, 2))
1414 bh
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_",
1415 FALSE
, FALSE
, FALSE
);
1417 if ((bh
== NULL
|| bh
->type
== bfd_link_hash_undefined
)
1418 && !(_bfd_generic_link_add_one_symbol (info
,
1426 get_elf_backend_data (abfd
)->collect
,
1429 h
= (struct elf_link_hash_entry
*) bh
;
1430 h
->type
= STT_OBJECT
;
1433 switch (sym
->st_shndx
)
1435 case SHN_M32R_SCOMMON
:
1436 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
1437 (*secp
)->flags
|= SEC_IS_COMMON
;
1438 *valp
= sym
->st_size
;
1445 /* We have to figure out the SDA_BASE value, so that we can adjust the
1446 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1447 BFD. If we can't find it, we're stuck. We cache it in the ELF
1448 target data. We don't need to adjust the symbol value for an
1449 external symbol if we are producing relocatable output. */
1451 static bfd_reloc_status_type
1452 m32r_elf_final_sda_base (bfd
*output_bfd
,
1453 struct bfd_link_info
*info
,
1454 const char **error_message
,
1457 if (elf_gp (output_bfd
) == 0)
1459 struct bfd_link_hash_entry
*h
;
1461 h
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_", FALSE
, FALSE
, TRUE
);
1462 if (h
!= NULL
&& h
->type
== bfd_link_hash_defined
)
1463 elf_gp (output_bfd
) = (h
->u
.def
.value
1464 + h
->u
.def
.section
->output_section
->vma
1465 + h
->u
.def
.section
->output_offset
);
1468 /* Only get the error once. */
1469 *psb
= elf_gp (output_bfd
) = 4;
1471 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1472 return bfd_reloc_dangerous
;
1475 *psb
= elf_gp (output_bfd
);
1476 return bfd_reloc_ok
;
1479 /* Return size of a PLT entry. */
1480 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1482 /* The m32r linker needs to keep track of the number of relocs that it
1483 decides to copy in check_relocs for each symbol. This is so that
1484 it can discard PC relative relocs if it doesn't need them when
1485 linking with -Bsymbolic. We store the information in a field
1486 extending the regular ELF linker hash table. */
1488 /* This structure keeps track of the number of PC relative relocs we
1489 have copied for a given symbol. */
1491 struct elf_m32r_pcrel_relocs_copied
1494 struct elf_m32r_pcrel_relocs_copied
*next
;
1495 /* A section in dynobj. */
1497 /* Number of relocs copied in this section. */
1498 bfd_size_type count
;
1501 /* m32r ELF linker hash table. */
1503 struct elf_m32r_link_hash_table
1505 struct elf_link_hash_table root
;
1507 /* Short-cuts to get to dynamic linker sections. */
1511 /* Small local sym cache. */
1512 struct sym_cache sym_cache
;
1515 /* Traverse an m32r ELF linker hash table. */
1517 #define m32r_elf_link_hash_traverse(table, func, info) \
1518 (elf_link_hash_traverse \
1520 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1523 /* Get the m32r ELF linker hash table from a link_info structure. */
1525 #define m32r_elf_hash_table(p) \
1526 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1527 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
1529 /* Create an m32r ELF linker hash table. */
1531 static struct bfd_link_hash_table
*
1532 m32r_elf_link_hash_table_create (bfd
*abfd
)
1534 struct elf_m32r_link_hash_table
*ret
;
1535 size_t amt
= sizeof (struct elf_m32r_link_hash_table
);
1537 ret
= bfd_zmalloc (amt
);
1541 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1542 _bfd_elf_link_hash_newfunc
,
1543 sizeof (struct elf_link_hash_entry
),
1550 return &ret
->root
.root
;
1553 /* Create dynamic sections when linking against a dynamic object. */
1556 m32r_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
1558 struct elf_m32r_link_hash_table
*htab
;
1559 flagword flags
, pltflags
;
1561 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1562 int ptralign
= 2; /* 32bit */
1564 htab
= m32r_elf_hash_table (info
);
1568 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1569 .rel[a].bss sections. */
1570 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
1571 | SEC_LINKER_CREATED
);
1574 pltflags
|= SEC_CODE
;
1575 if (bed
->plt_not_loaded
)
1576 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
1577 if (bed
->plt_readonly
)
1578 pltflags
|= SEC_READONLY
;
1580 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
1581 htab
->root
.splt
= s
;
1583 || !bfd_set_section_alignment (s
, bed
->plt_alignment
))
1586 if (bed
->want_plt_sym
)
1588 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1590 struct bfd_link_hash_entry
*bh
= NULL
;
1591 struct elf_link_hash_entry
*h
;
1593 if (! (_bfd_generic_link_add_one_symbol
1594 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
1595 (bfd_vma
) 0, NULL
, FALSE
,
1596 get_elf_backend_data (abfd
)->collect
, &bh
)))
1598 h
= (struct elf_link_hash_entry
*) bh
;
1600 h
->type
= STT_OBJECT
;
1601 htab
->root
.hplt
= h
;
1603 if (bfd_link_pic (info
)
1604 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
1608 s
= bfd_make_section_anyway_with_flags (abfd
,
1609 bed
->default_use_rela_p
1610 ? ".rela.plt" : ".rel.plt",
1611 flags
| SEC_READONLY
);
1612 htab
->root
.srelplt
= s
;
1614 || !bfd_set_section_alignment (s
, ptralign
))
1617 if (htab
->root
.sgot
== NULL
1618 && !_bfd_elf_create_got_section (abfd
, info
))
1621 if (bed
->want_dynbss
)
1623 /* The .dynbss section is a place to put symbols which are defined
1624 by dynamic objects, are referenced by regular objects, and are
1625 not functions. We must allocate space for them in the process
1626 image and use a R_*_COPY reloc to tell the dynamic linker to
1627 initialize them at run time. The linker script puts the .dynbss
1628 section into the .bss section of the final image. */
1629 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
1630 SEC_ALLOC
| SEC_LINKER_CREATED
);
1634 /* The .rel[a].bss section holds copy relocs. This section is not
1635 normally needed. We need to create it here, though, so that the
1636 linker will map it to an output section. We can't just create it
1637 only if we need it, because we will not know whether we need it
1638 until we have seen all the input files, and the first time the
1639 main linker code calls BFD after examining all the input files
1640 (size_dynamic_sections) the input sections have already been
1641 mapped to the output sections. If the section turns out not to
1642 be needed, we can discard it later. We will never need this
1643 section when generating a shared object, since they do not use
1645 if (! bfd_link_pic (info
))
1647 s
= bfd_make_section_anyway_with_flags (abfd
,
1648 (bed
->default_use_rela_p
1649 ? ".rela.bss" : ".rel.bss"),
1650 flags
| SEC_READONLY
);
1653 || !bfd_set_section_alignment (s
, ptralign
))
1661 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1664 m32r_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
1665 struct elf_link_hash_entry
*dir
,
1666 struct elf_link_hash_entry
*ind
)
1668 if (ind
->dyn_relocs
!= NULL
)
1670 if (dir
->dyn_relocs
!= NULL
)
1672 struct elf_dyn_relocs
**pp
;
1673 struct elf_dyn_relocs
*p
;
1675 /* Add reloc counts against the indirect sym to the direct sym
1676 list. Merge any entries against the same section. */
1677 for (pp
= &ind
->dyn_relocs
; (p
= *pp
) != NULL
;)
1679 struct elf_dyn_relocs
*q
;
1681 for (q
= dir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
1682 if (q
->sec
== p
->sec
)
1684 q
->pc_count
+= p
->pc_count
;
1685 q
->count
+= p
->count
;
1692 *pp
= dir
->dyn_relocs
;
1695 dir
->dyn_relocs
= ind
->dyn_relocs
;
1696 ind
->dyn_relocs
= NULL
;
1699 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
1703 /* Find dynamic relocs for H that apply to read-only sections. */
1706 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
1708 struct elf_dyn_relocs
*p
;
1710 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1712 asection
*s
= p
->sec
->output_section
;
1714 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1720 /* Adjust a symbol defined by a dynamic object and referenced by a
1721 regular object. The current definition is in some section of the
1722 dynamic object, but we're not including those sections. We have to
1723 change the definition to something the rest of the link can
1727 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1728 struct elf_link_hash_entry
*h
)
1730 struct elf_m32r_link_hash_table
*htab
;
1735 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1738 dynobj
= elf_hash_table (info
)->dynobj
;
1740 /* Make sure we know what is going on here. */
1741 BFD_ASSERT (dynobj
!= NULL
1746 && !h
->def_regular
)));
1748 /* If this is a function, put it in the procedure linkage table. We
1749 will fill in the contents of the procedure linkage table later,
1750 when we know the address of the .got section. */
1751 if (h
->type
== STT_FUNC
1754 if (! bfd_link_pic (info
)
1757 && h
->root
.type
!= bfd_link_hash_undefweak
1758 && h
->root
.type
!= bfd_link_hash_undefined
)
1760 /* This case can occur if we saw a PLT reloc in an input
1761 file, but the symbol was never referred to by a dynamic
1762 object. In such a case, we don't actually need to build
1763 a procedure linkage table, and we can just do a PCREL
1765 h
->plt
.offset
= (bfd_vma
) -1;
1772 h
->plt
.offset
= (bfd_vma
) -1;
1774 /* If this is a weak symbol, and there is a real definition, the
1775 processor independent code will have arranged for us to see the
1776 real definition first, and we can just use the same value. */
1777 if (h
->is_weakalias
)
1779 struct elf_link_hash_entry
*def
= weakdef (h
);
1780 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1781 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1782 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1786 /* This is a reference to a symbol defined by a dynamic object which
1787 is not a function. */
1789 /* If we are creating a shared library, we must presume that the
1790 only references to the symbol are via the global offset table.
1791 For such cases we need not do anything here; the relocations will
1792 be handled correctly by relocate_section. */
1793 if (bfd_link_pic (info
))
1796 /* If there are no references to this symbol that do not use the
1797 GOT, we don't need to generate a copy reloc. */
1798 if (!h
->non_got_ref
)
1801 /* If -z nocopyreloc was given, we won't generate them either. */
1802 if (0 && info
->nocopyreloc
)
1808 /* If we don't find any dynamic relocs in read-only sections, then
1809 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1810 if (0 && !readonly_dynrelocs (h
))
1816 /* We must allocate the symbol in our .dynbss section, which will
1817 become part of the .bss section of the executable. There will be
1818 an entry for this symbol in the .dynsym section. The dynamic
1819 object will contain position independent code, so all references
1820 from the dynamic object to this symbol will go through the global
1821 offset table. The dynamic linker will use the .dynsym entry to
1822 determine the address it must put in the global offset table, so
1823 both the dynamic object and the regular object will refer to the
1824 same memory location for the variable. */
1826 htab
= m32r_elf_hash_table (info
);
1831 BFD_ASSERT (s
!= NULL
);
1833 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1834 to copy the initial value out of the dynamic object and into the
1835 runtime process image. We need to remember the offset into the
1836 .rela.bss section we are going to use. */
1837 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1841 srel
= htab
->srelbss
;
1842 BFD_ASSERT (srel
!= NULL
);
1843 srel
->size
+= sizeof (Elf32_External_Rela
);
1847 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1850 /* Allocate space in .plt, .got and associated reloc sections for
1854 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1856 struct bfd_link_info
*info
;
1857 struct elf_m32r_link_hash_table
*htab
;
1858 struct elf_dyn_relocs
*p
;
1860 if (h
->root
.type
== bfd_link_hash_indirect
)
1863 info
= (struct bfd_link_info
*) inf
;
1864 htab
= m32r_elf_hash_table (info
);
1868 if (htab
->root
.dynamic_sections_created
1869 && h
->plt
.refcount
> 0)
1871 /* Make sure this symbol is output as a dynamic symbol.
1872 Undefined weak syms won't yet be marked as dynamic. */
1873 if (h
->dynindx
== -1
1874 && !h
->forced_local
)
1876 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1880 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
1882 asection
*s
= htab
->root
.splt
;
1884 /* If this is the first .plt entry, make room for the special
1887 s
->size
+= PLT_ENTRY_SIZE
;
1889 h
->plt
.offset
= s
->size
;
1891 /* If this symbol is not defined in a regular file, and we are
1892 not generating a shared library, then set the symbol to this
1893 location in the .plt. This is required to make function
1894 pointers compare as equal between the normal executable and
1895 the shared library. */
1896 if (! bfd_link_pic (info
)
1899 h
->root
.u
.def
.section
= s
;
1900 h
->root
.u
.def
.value
= h
->plt
.offset
;
1903 /* Make room for this entry. */
1904 s
->size
+= PLT_ENTRY_SIZE
;
1906 /* We also need to make an entry in the .got.plt section, which
1907 will be placed in the .got section by the linker script. */
1908 htab
->root
.sgotplt
->size
+= 4;
1910 /* We also need to make an entry in the .rel.plt section. */
1911 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1915 h
->plt
.offset
= (bfd_vma
) -1;
1921 h
->plt
.offset
= (bfd_vma
) -1;
1925 if (h
->got
.refcount
> 0)
1930 /* Make sure this symbol is output as a dynamic symbol.
1931 Undefined weak syms won't yet be marked as dynamic. */
1932 if (h
->dynindx
== -1
1933 && !h
->forced_local
)
1935 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1939 s
= htab
->root
.sgot
;
1941 h
->got
.offset
= s
->size
;
1943 dyn
= htab
->root
.dynamic_sections_created
;
1944 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
1945 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1948 h
->got
.offset
= (bfd_vma
) -1;
1950 if (h
->dyn_relocs
== NULL
)
1953 /* In the shared -Bsymbolic case, discard space allocated for
1954 dynamic pc-relative relocs against symbols which turn out to be
1955 defined in regular objects. For the normal shared case, discard
1956 space for pc-relative relocs that have become local due to symbol
1957 visibility changes. */
1959 if (bfd_link_pic (info
))
1965 struct elf_dyn_relocs
**pp
;
1967 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
;)
1969 p
->count
-= p
->pc_count
;
1978 /* Also discard relocs on undefined weak syms with non-default
1980 if (h
->dyn_relocs
!= NULL
1981 && h
->root
.type
== bfd_link_hash_undefweak
)
1983 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1984 h
->dyn_relocs
= NULL
;
1986 /* Make sure undefined weak symbols are output as a dynamic
1988 else if (h
->dynindx
== -1
1989 && !h
->forced_local
)
1991 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1998 /* For the non-shared case, discard space for relocs against
1999 symbols which turn out to need copy relocs or are not
2005 || (htab
->root
.dynamic_sections_created
2006 && (h
->root
.type
== bfd_link_hash_undefweak
2007 || h
->root
.type
== bfd_link_hash_undefined
))))
2009 /* Make sure this symbol is output as a dynamic symbol.
2010 Undefined weak syms won't yet be marked as dynamic. */
2011 if (h
->dynindx
== -1
2012 && !h
->forced_local
)
2014 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2018 /* If that succeeded, we know we'll be keeping all the
2020 if (h
->dynindx
!= -1)
2024 h
->dyn_relocs
= NULL
;
2029 /* Finally, allocate space. */
2030 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2032 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2033 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2039 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2040 read-only sections. */
2043 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2047 if (h
->root
.type
== bfd_link_hash_indirect
)
2050 sec
= readonly_dynrelocs (h
);
2053 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2055 info
->flags
|= DF_TEXTREL
;
2056 info
->callbacks
->minfo
2057 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2058 sec
->owner
, h
->root
.root
.string
, sec
);
2060 /* Not an error, just cut short the traversal. */
2066 /* Set the sizes of the dynamic sections. */
2069 m32r_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2070 struct bfd_link_info
*info
)
2072 struct elf_m32r_link_hash_table
*htab
;
2079 printf ("m32r_elf_size_dynamic_sections()\n");
2082 htab
= m32r_elf_hash_table (info
);
2086 dynobj
= htab
->root
.dynobj
;
2087 BFD_ASSERT (dynobj
!= NULL
);
2089 if (htab
->root
.dynamic_sections_created
)
2091 /* Set the contents of the .interp section to the interpreter. */
2092 if (bfd_link_executable (info
) && !info
->nointerp
)
2094 s
= bfd_get_linker_section (dynobj
, ".interp");
2095 BFD_ASSERT (s
!= NULL
);
2096 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2097 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2101 /* Set up .got offsets for local syms, and space for local dynamic
2103 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2105 bfd_signed_vma
*local_got
;
2106 bfd_signed_vma
*end_local_got
;
2107 bfd_size_type locsymcount
;
2108 Elf_Internal_Shdr
*symtab_hdr
;
2111 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2114 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2116 struct elf_dyn_relocs
*p
;
2118 for (p
= ((struct elf_dyn_relocs
*)
2119 elf_section_data (s
)->local_dynrel
);
2123 if (! bfd_is_abs_section (p
->sec
)
2124 && bfd_is_abs_section (p
->sec
->output_section
))
2126 /* Input section has been discarded, either because
2127 it is a copy of a linkonce section or due to
2128 linker script /DISCARD/, so we'll be discarding
2131 else if (p
->count
!= 0)
2133 srel
= elf_section_data (p
->sec
)->sreloc
;
2134 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2135 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2136 info
->flags
|= DF_TEXTREL
;
2141 local_got
= elf_local_got_refcounts (ibfd
);
2145 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2146 locsymcount
= symtab_hdr
->sh_info
;
2147 end_local_got
= local_got
+ locsymcount
;
2148 s
= htab
->root
.sgot
;
2149 srel
= htab
->root
.srelgot
;
2150 for (; local_got
< end_local_got
; ++local_got
)
2154 *local_got
= s
->size
;
2156 if (bfd_link_pic (info
))
2157 srel
->size
+= sizeof (Elf32_External_Rela
);
2160 *local_got
= (bfd_vma
) -1;
2164 /* Allocate global sym .plt and .got entries, and space for global
2165 sym dynamic relocs. */
2166 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2168 /* We now have determined the sizes of the various dynamic sections.
2169 Allocate memory for them. */
2171 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2173 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2176 if (s
== htab
->root
.splt
2177 || s
== htab
->root
.sgot
2178 || s
== htab
->root
.sgotplt
2179 || s
== htab
->sdynbss
)
2181 /* Strip this section if we don't need it; see the
2184 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
2186 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2189 /* We use the reloc_count field as a counter if we need
2190 to copy relocs into the output file. */
2194 /* It's not one of our sections, so don't allocate space. */
2199 /* If we don't need this section, strip it from the
2200 output file. This is mostly to handle .rela.bss and
2201 .rela.plt. We must create both sections in
2202 create_dynamic_sections, because they must be created
2203 before the linker maps input sections to output
2204 sections. The linker does that before
2205 adjust_dynamic_symbol is called, and it is that
2206 function which decides whether anything needs to go
2207 into these sections. */
2208 s
->flags
|= SEC_EXCLUDE
;
2212 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2215 /* Allocate memory for the section contents. We use bfd_zalloc
2216 here in case unused entries are not reclaimed before the
2217 section's contents are written out. This should not happen,
2218 but this way if it does, we get a R_M32R_NONE reloc instead
2220 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2221 if (s
->contents
== NULL
)
2225 if (htab
->root
.dynamic_sections_created
)
2227 /* Add some entries to the .dynamic section. We fill in the
2228 values later, in m32r_elf_finish_dynamic_sections, but we
2229 must add the entries now so that we get the correct size for
2230 the .dynamic section. The DT_DEBUG entry is filled in by the
2231 dynamic linker and used by the debugger. */
2232 #define add_dynamic_entry(TAG, VAL) \
2233 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2235 if (bfd_link_executable (info
))
2237 if (! add_dynamic_entry (DT_DEBUG
, 0))
2241 if (htab
->root
.splt
->size
!= 0)
2243 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2244 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2245 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2246 || ! add_dynamic_entry (DT_JMPREL
, 0))
2252 if (! add_dynamic_entry (DT_RELA
, 0)
2253 || ! add_dynamic_entry (DT_RELASZ
, 0)
2254 || ! add_dynamic_entry (DT_RELAENT
,
2255 sizeof (Elf32_External_Rela
)))
2258 /* If any dynamic relocs apply to a read-only section,
2259 then we need a DT_TEXTREL entry. */
2260 if ((info
->flags
& DF_TEXTREL
) == 0)
2261 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
2263 if ((info
->flags
& DF_TEXTREL
) != 0)
2265 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2270 #undef add_dynamic_entry
2275 /* Relocate an M32R/D ELF section.
2276 There is some attempt to make this function usable for many architectures,
2277 both for RELA and REL type relocs, if only to serve as a learning tool.
2279 The RELOCATE_SECTION function is called by the new ELF backend linker
2280 to handle the relocations for a section.
2282 The relocs are always passed as Rela structures; if the section
2283 actually uses Rel structures, the r_addend field will always be
2286 This function is responsible for adjust the section contents as
2287 necessary, and (if using Rela relocs and generating a
2288 relocatable output file) adjusting the reloc addend as
2291 This function does not have to worry about setting the reloc
2292 address or the reloc symbol index.
2294 LOCAL_SYMS is a pointer to the swapped in local symbols.
2296 LOCAL_SECTIONS is an array giving the section in the input file
2297 corresponding to the st_shndx field of each local symbol.
2299 The global hash table entry for the global symbols can be found
2300 via elf_sym_hashes (input_bfd).
2302 When generating relocatable output, this function must handle
2303 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2304 going to be the section symbol corresponding to the output
2305 section, which means that the addend must be adjusted
2309 m32r_elf_relocate_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2310 struct bfd_link_info
*info
,
2312 asection
*input_section
,
2314 Elf_Internal_Rela
*relocs
,
2315 Elf_Internal_Sym
*local_syms
,
2316 asection
**local_sections
)
2318 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2319 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
2320 Elf_Internal_Rela
*rel
, *relend
;
2321 /* Assume success. */
2322 bfd_boolean ret
= TRUE
;
2323 struct elf_m32r_link_hash_table
*htab
= m32r_elf_hash_table (info
);
2324 bfd_vma
*local_got_offsets
;
2325 asection
*sgot
, *splt
, *sreloc
;
2326 bfd_vma high_address
= bfd_get_section_limit (input_bfd
, input_section
);
2331 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2333 sgot
= htab
->root
.sgot
;
2334 splt
= htab
->root
.splt
;
2338 relend
= relocs
+ input_section
->reloc_count
;
2339 for (; rel
< relend
; rel
++)
2342 reloc_howto_type
*howto
;
2343 unsigned long r_symndx
;
2344 struct elf_link_hash_entry
*h
;
2345 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2346 ensure it's zero (we use REL relocs, not RELA). Therefore this
2347 should be assigning zero to `addend', but for clarity we use
2349 bfd_vma addend
= rel
->r_addend
;
2350 bfd_vma offset
= rel
->r_offset
;
2352 Elf_Internal_Sym
*sym
;
2354 const char *sym_name
;
2355 bfd_reloc_status_type r
;
2356 const char *errmsg
= NULL
;
2357 bfd_boolean use_rel
= FALSE
;
2360 r_type
= ELF32_R_TYPE (rel
->r_info
);
2361 if (r_type
< 0 || r_type
>= (int) R_M32R_max
)
2363 /* xgettext:c-format */
2364 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2365 input_bfd
, (int) r_type
);
2366 bfd_set_error (bfd_error_bad_value
);
2371 if ( r_type
== R_M32R_GNU_VTENTRY
2372 || r_type
== R_M32R_GNU_VTINHERIT
2373 || r_type
== R_M32R_NONE
2374 || r_type
== R_M32R_RELA_GNU_VTENTRY
2375 || r_type
== R_M32R_RELA_GNU_VTINHERIT
)
2378 if (r_type
<= R_M32R_GNU_VTENTRY
)
2381 howto
= m32r_elf_howto_table
+ r_type
;
2382 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2388 if (r_symndx
< symtab_hdr
->sh_info
)
2391 sym
= local_syms
+ r_symndx
;
2392 sec
= local_sections
[r_symndx
];
2393 sym_name
= "<local symbol>";
2397 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2398 addend
= rel
->r_addend
;
2402 relocation
= (sec
->output_section
->vma
2403 + sec
->output_offset
2409 /* External symbol. */
2412 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2414 if (info
->wrap_hash
!= NULL
2415 && (input_section
->flags
& SEC_DEBUGGING
) != 0)
2416 h
= ((struct elf_link_hash_entry
*)
2417 unwrap_hash_lookup (info
, input_bfd
, &h
->root
));
2419 while (h
->root
.type
== bfd_link_hash_indirect
2420 || h
->root
.type
== bfd_link_hash_warning
)
2421 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2422 sym_name
= h
->root
.root
.string
;
2424 if (h
->root
.type
== bfd_link_hash_defined
2425 || h
->root
.type
== bfd_link_hash_defweak
)
2428 sec
= h
->root
.u
.def
.section
;
2430 dyn
= htab
->root
.dynamic_sections_created
;
2431 sec
= h
->root
.u
.def
.section
;
2432 if (r_type
== R_M32R_GOTPC24
2433 || (r_type
== R_M32R_GOTPC_HI_ULO
2434 || r_type
== R_M32R_GOTPC_HI_SLO
2435 || r_type
== R_M32R_GOTPC_LO
)
2436 || (r_type
== R_M32R_26_PLTREL
2437 && h
->plt
.offset
!= (bfd_vma
) -1)
2438 || ((r_type
== R_M32R_GOT24
2439 || r_type
== R_M32R_GOT16_HI_ULO
2440 || r_type
== R_M32R_GOT16_HI_SLO
2441 || r_type
== R_M32R_GOT16_LO
)
2442 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2443 bfd_link_pic (info
),
2445 && (! bfd_link_pic (info
)
2446 || (! info
->symbolic
&& h
->dynindx
!= -1)
2447 || !h
->def_regular
))
2448 || (bfd_link_pic (info
)
2449 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2451 && (((r_type
== R_M32R_16_RELA
2452 || r_type
== R_M32R_32_RELA
2453 || r_type
== R_M32R_24_RELA
2454 || r_type
== R_M32R_HI16_ULO_RELA
2455 || r_type
== R_M32R_HI16_SLO_RELA
2456 || r_type
== R_M32R_LO16_RELA
)
2457 && !h
->forced_local
)
2458 || r_type
== R_M32R_REL32
2459 || r_type
== R_M32R_10_PCREL_RELA
2460 || r_type
== R_M32R_18_PCREL_RELA
2461 || r_type
== R_M32R_26_PCREL_RELA
)
2462 && ((input_section
->flags
& SEC_ALLOC
) != 0
2463 /* DWARF will emit R_M32R_16(24,32) relocations
2464 in its sections against symbols defined
2465 externally in shared libraries. We can't do
2466 anything with them here. */
2467 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2468 && h
->def_dynamic
))))
2470 /* In these cases, we don't need the relocation
2471 value. We check specially because in some
2472 obscure cases sec->output_section will be NULL. */
2474 else if (sec
->output_section
!= NULL
)
2475 relocation
= (h
->root
.u
.def
.value
2476 + sec
->output_section
->vma
2477 + sec
->output_offset
);
2478 else if (!bfd_link_relocatable (info
)
2479 && (_bfd_elf_section_offset (output_bfd
, info
,
2485 /* xgettext:c-format */
2486 (_("%pB(%pA+%#" PRIx64
"): unresolvable %s relocation "
2487 "against symbol `%s'"),
2490 (uint64_t) rel
->r_offset
,
2492 h
->root
.root
.string
);
2495 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2497 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
2498 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2500 else if (!bfd_link_relocatable (info
))
2501 info
->callbacks
->undefined_symbol
2502 (info
, h
->root
.root
.string
, input_bfd
, input_section
, offset
,
2503 (info
->unresolved_syms_in_objects
== RM_DIAGNOSE
2504 && !info
->warn_unresolved_syms
)
2505 || ELF_ST_VISIBILITY (h
->other
));
2508 if (sec
!= NULL
&& discarded_section (sec
))
2509 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2510 rel
, 1, relend
, howto
, 0, contents
);
2512 if (bfd_link_relocatable (info
) && !use_rel
)
2514 /* This is a relocatable link. We don't have to change
2515 anything, unless the reloc is against a section symbol,
2516 in which case we have to adjust according to where the
2517 section symbol winds up in the output section. */
2518 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2519 rel
->r_addend
+= sec
->output_offset
;
2523 if (bfd_link_relocatable (info
) && use_rel
)
2525 /* This is a relocatable link. We don't have to change
2526 anything, unless the reloc is against a section symbol,
2527 in which case we have to adjust according to where the
2528 section symbol winds up in the output section. */
2529 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
2532 addend
+= sec
->output_offset
;
2534 /* If partial_inplace, we need to store any additional addend
2535 back in the section. */
2536 if (! howto
->partial_inplace
)
2538 /* ??? Here is a nice place to call a special_function
2540 if (r_type
!= R_M32R_HI16_SLO
&& r_type
!= R_M32R_HI16_ULO
)
2541 r
= _bfd_relocate_contents (howto
, input_bfd
,
2542 addend
, contents
+ offset
);
2545 Elf_Internal_Rela
*lorel
;
2547 /* We allow an arbitrary number of HI16 relocs before the
2548 LO16 reloc. This permits gcc to emit the HI and LO relocs
2550 for (lorel
= rel
+ 1;
2552 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2553 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2557 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2559 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2564 r
= _bfd_relocate_contents (howto
, input_bfd
,
2565 addend
, contents
+ offset
);
2570 /* Sanity check the address. */
2571 if (offset
> high_address
)
2573 r
= bfd_reloc_outofrange
;
2577 switch ((int) r_type
)
2580 /* Relocation is relative to the start of the global offset
2581 table (for ld24 rx, #uimm24). eg access at label+addend
2583 ld24 rx. #label@GOTOFF + addend
2586 BFD_ASSERT (sgot
!= NULL
);
2588 relocation
= -(relocation
- sgot
->output_section
->vma
);
2589 rel
->r_addend
= -rel
->r_addend
;
2592 case R_M32R_GOTOFF_HI_ULO
:
2593 case R_M32R_GOTOFF_HI_SLO
:
2594 case R_M32R_GOTOFF_LO
:
2595 BFD_ASSERT (sgot
!= NULL
);
2597 relocation
-= sgot
->output_section
->vma
;
2599 if ((r_type
== R_M32R_GOTOFF_HI_SLO
)
2600 && ((relocation
+ rel
->r_addend
) & 0x8000))
2601 rel
->r_addend
+= 0x10000;
2604 case R_M32R_GOTPC24
:
2605 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2606 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2608 relocation
= sgot
->output_section
->vma
;
2611 case R_M32R_GOTPC_HI_ULO
:
2612 case R_M32R_GOTPC_HI_SLO
:
2613 case R_M32R_GOTPC_LO
:
2615 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2617 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2618 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2621 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2622 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2624 relocation
= sgot
->output_section
->vma
;
2625 relocation
-= (input_section
->output_section
->vma
2626 + input_section
->output_offset
2628 if ((r_type
== R_M32R_GOTPC_HI_SLO
)
2629 && ((relocation
+ rel
->r_addend
) & 0x8000))
2630 rel
->r_addend
+= 0x10000;
2634 case R_M32R_GOT16_HI_ULO
:
2635 case R_M32R_GOT16_HI_SLO
:
2636 case R_M32R_GOT16_LO
:
2639 /* Relocation is to the entry for this symbol in the global
2641 BFD_ASSERT (sgot
!= NULL
);
2648 off
= h
->got
.offset
;
2649 BFD_ASSERT (off
!= (bfd_vma
) -1);
2651 dyn
= htab
->root
.dynamic_sections_created
;
2652 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2653 bfd_link_pic (info
),
2655 || (bfd_link_pic (info
)
2661 /* This is actually a static link, or it is a
2662 -Bsymbolic link and the symbol is defined
2663 locally, or the symbol was forced to be local
2664 because of a version file. We must initialize
2665 this entry in the global offset table. Since the
2666 offset must always be a multiple of 4, we use the
2667 least significant bit to record whether we have
2668 initialized it already.
2670 When doing a dynamic link, we create a .rela.got
2671 relocation entry to initialize the value. This
2672 is done in the finish_dynamic_symbol routine. */
2677 bfd_put_32 (output_bfd
, relocation
,
2678 sgot
->contents
+ off
);
2683 relocation
= sgot
->output_offset
+ off
;
2690 BFD_ASSERT (local_got_offsets
!= NULL
2691 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
2693 off
= local_got_offsets
[r_symndx
];
2695 /* The offset must always be a multiple of 4. We use
2696 the least significant bit to record whether we have
2697 already processed this entry. */
2702 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
2704 if (bfd_link_pic (info
))
2707 Elf_Internal_Rela outrel
;
2709 /* We need to generate a R_M32R_RELATIVE reloc
2710 for the dynamic linker. */
2711 srelgot
= htab
->root
.srelgot
;
2712 BFD_ASSERT (srelgot
!= NULL
);
2714 outrel
.r_offset
= (sgot
->output_section
->vma
2715 + sgot
->output_offset
2717 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2718 outrel
.r_addend
= relocation
;
2719 loc
= srelgot
->contents
;
2720 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
2721 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2722 ++srelgot
->reloc_count
;
2725 local_got_offsets
[r_symndx
] |= 1;
2728 relocation
= sgot
->output_offset
+ off
;
2730 if ((r_type
== R_M32R_GOT16_HI_SLO
)
2731 && ((relocation
+ rel
->r_addend
) & 0x8000))
2732 rel
->r_addend
+= 0x10000;
2736 case R_M32R_26_PLTREL
:
2737 /* Relocation is to the entry for this symbol in the
2738 procedure linkage table. */
2740 /* The native assembler will generate a 26_PLTREL reloc
2741 for a local symbol if you assemble a call from one
2742 section to another when using -K pic. */
2746 if (h
->forced_local
)
2749 if (h
->plt
.offset
== (bfd_vma
) -1)
2750 /* We didn't make a PLT entry for this symbol. This
2751 happens when statically linking PIC code, or when
2752 using -Bsymbolic. */
2755 relocation
= (splt
->output_section
->vma
2756 + splt
->output_offset
2760 case R_M32R_HI16_SLO_RELA
:
2761 if ((relocation
+ rel
->r_addend
) & 0x8000)
2762 rel
->r_addend
+= 0x10000;
2765 case R_M32R_16_RELA
:
2766 case R_M32R_24_RELA
:
2767 case R_M32R_32_RELA
:
2769 case R_M32R_10_PCREL_RELA
:
2770 case R_M32R_18_PCREL_RELA
:
2771 case R_M32R_26_PCREL_RELA
:
2772 case R_M32R_HI16_ULO_RELA
:
2773 case R_M32R_LO16_RELA
:
2774 if (bfd_link_pic (info
)
2775 && r_symndx
!= STN_UNDEF
2776 && (input_section
->flags
& SEC_ALLOC
) != 0
2777 && (( r_type
!= R_M32R_10_PCREL_RELA
2778 && r_type
!= R_M32R_18_PCREL_RELA
2779 && r_type
!= R_M32R_26_PCREL_RELA
2780 && r_type
!= R_M32R_REL32
)
2783 && (! info
->symbolic
2784 || !h
->def_regular
))))
2786 Elf_Internal_Rela outrel
;
2787 bfd_boolean skip
, relocate
;
2790 /* When generating a shared object, these relocations
2791 are copied into the output file to be resolved at run
2795 sreloc
= _bfd_elf_get_dynamic_reloc_section
2796 (input_bfd
, input_section
, /*rela?*/ TRUE
);
2804 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2808 if (outrel
.r_offset
== (bfd_vma
) -1)
2810 else if (outrel
.r_offset
== (bfd_vma
) -2)
2811 skip
= relocate
= TRUE
;
2812 outrel
.r_offset
+= (input_section
->output_section
->vma
2813 + input_section
->output_offset
);
2816 memset (&outrel
, 0, sizeof outrel
);
2817 else if ( r_type
== R_M32R_10_PCREL_RELA
2818 || r_type
== R_M32R_18_PCREL_RELA
2819 || r_type
== R_M32R_26_PCREL_RELA
2820 || r_type
== R_M32R_REL32
)
2822 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
2823 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2824 outrel
.r_addend
= rel
->r_addend
;
2828 /* h->dynindx may be -1 if this symbol was marked to
2831 || ((info
->symbolic
|| h
->dynindx
== -1)
2835 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2836 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2840 BFD_ASSERT (h
->dynindx
!= -1);
2841 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2842 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2846 loc
= sreloc
->contents
;
2847 loc
+= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
2848 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2849 ++sreloc
->reloc_count
;
2851 /* If this reloc is against an external symbol, we do
2852 not want to fiddle with the addend. Otherwise, we
2853 need to include the symbol value so that it becomes
2854 an addend for the dynamic reloc. */
2859 else if (r_type
!= R_M32R_10_PCREL_RELA
)
2863 case (int) R_M32R_10_PCREL
:
2864 r
= m32r_elf_do_10_pcrel_reloc (input_bfd
, howto
, input_section
,
2866 sec
, relocation
, addend
);
2869 case (int) R_M32R_HI16_SLO
:
2870 case (int) R_M32R_HI16_ULO
:
2872 Elf_Internal_Rela
*lorel
;
2874 /* We allow an arbitrary number of HI16 relocs before the
2875 LO16 reloc. This permits gcc to emit the HI and LO relocs
2877 for (lorel
= rel
+ 1;
2879 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2880 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2884 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2886 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2887 contents
, relocation
+ addend
);
2891 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2893 relocation
, addend
);
2898 case (int) R_M32R_SDA16_RELA
:
2899 case (int) R_M32R_SDA16
:
2903 BFD_ASSERT (sec
!= NULL
);
2904 name
= bfd_section_name (sec
);
2906 if ( strcmp (name
, ".sdata") == 0
2907 || strcmp (name
, ".sbss") == 0
2908 || strcmp (name
, ".scommon") == 0)
2911 bfd
*out_bfd
= sec
->output_section
->owner
;
2913 r
= m32r_elf_final_sda_base (out_bfd
, info
,
2916 if (r
!= bfd_reloc_ok
)
2922 /* At this point `relocation' contains the object's
2924 relocation
-= sda_base
;
2925 /* Now it contains the offset from _SDA_BASE_. */
2930 /* xgettext:c-format */
2931 (_("%pB: the target (%s) of an %s relocation"
2932 " is in the wrong section (%pA)"),
2935 m32r_elf_howto_table
[(int) r_type
].name
,
2937 /*bfd_set_error (bfd_error_bad_value); ??? why? */
2944 default : /* OLD_M32R_RELOC */
2946 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2948 relocation
, addend
);
2952 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2953 contents
, rel
->r_offset
,
2954 relocation
, rel
->r_addend
);
2960 if (r
!= bfd_reloc_ok
)
2962 /* FIXME: This should be generic enough to go in a utility. */
2966 name
= h
->root
.root
.string
;
2969 name
= (bfd_elf_string_from_elf_section
2970 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
2971 if (name
== NULL
|| *name
== '\0')
2972 name
= bfd_section_name (sec
);
2980 case bfd_reloc_overflow
:
2981 (*info
->callbacks
->reloc_overflow
)
2982 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2983 (bfd_vma
) 0, input_bfd
, input_section
, offset
);
2986 case bfd_reloc_undefined
:
2987 (*info
->callbacks
->undefined_symbol
)
2988 (info
, name
, input_bfd
, input_section
, offset
, TRUE
);
2991 case bfd_reloc_outofrange
:
2992 errmsg
= _("internal error: out of range error");
2995 case bfd_reloc_notsupported
:
2996 errmsg
= _("internal error: unsupported relocation error");
2999 case bfd_reloc_dangerous
:
3000 errmsg
= _("internal error: dangerous error");
3004 errmsg
= _("internal error: unknown error");
3008 (*info
->callbacks
->warning
) (info
, errmsg
, name
, input_bfd
,
3009 input_section
, offset
);
3018 /* Finish up dynamic symbol handling. We set the contents of various
3019 dynamic sections here. */
3022 m32r_elf_finish_dynamic_symbol (bfd
*output_bfd
,
3023 struct bfd_link_info
*info
,
3024 struct elf_link_hash_entry
*h
,
3025 Elf_Internal_Sym
*sym
)
3027 struct elf_m32r_link_hash_table
*htab
;
3031 printf ("m32r_elf_finish_dynamic_symbol()\n");
3034 htab
= m32r_elf_hash_table (info
);
3038 if (h
->plt
.offset
!= (bfd_vma
) -1)
3046 Elf_Internal_Rela rela
;
3048 /* This symbol has an entry in the procedure linkage table. Set
3051 BFD_ASSERT (h
->dynindx
!= -1);
3053 splt
= htab
->root
.splt
;
3054 sgot
= htab
->root
.sgotplt
;
3055 srela
= htab
->root
.srelplt
;
3056 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
3058 /* Get the index in the procedure linkage table which
3059 corresponds to this symbol. This is the index of this symbol
3060 in all the symbols for which we are making plt entries. The
3061 first entry in the procedure linkage table is reserved. */
3062 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
3064 /* Get the offset into the .got table of the entry that
3065 corresponds to this function. Each .got entry is 4 bytes.
3066 The first three are reserved. */
3067 got_offset
= (plt_index
+ 3) * 4;
3069 /* Fill in the entry in the procedure linkage table. */
3070 if (! bfd_link_pic (info
))
3072 bfd_put_32 (output_bfd
,
3074 + (((sgot
->output_section
->vma
3075 + sgot
->output_offset
3076 + got_offset
) >> 16) & 0xffff)),
3077 splt
->contents
+ h
->plt
.offset
);
3078 bfd_put_32 (output_bfd
,
3080 + ((sgot
->output_section
->vma
3081 + sgot
->output_offset
3082 + got_offset
) & 0xffff)),
3083 splt
->contents
+ h
->plt
.offset
+ 4);
3084 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3085 splt
->contents
+ h
->plt
.offset
+ 8);
3086 bfd_put_32 (output_bfd
,
3088 + plt_index
* sizeof (Elf32_External_Rela
)),
3089 splt
->contents
+ h
->plt
.offset
+ 12);
3090 bfd_put_32 (output_bfd
,
3092 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3093 splt
->contents
+ h
->plt
.offset
+ 16);
3097 bfd_put_32 (output_bfd
,
3098 PLT_ENTRY_WORD0
+ got_offset
,
3099 splt
->contents
+ h
->plt
.offset
);
3100 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
,
3101 splt
->contents
+ h
->plt
.offset
+ 4);
3102 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3103 splt
->contents
+ h
->plt
.offset
+ 8);
3104 bfd_put_32 (output_bfd
,
3106 + plt_index
* sizeof (Elf32_External_Rela
)),
3107 splt
->contents
+ h
->plt
.offset
+ 12);
3108 bfd_put_32 (output_bfd
,
3110 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3111 splt
->contents
+ h
->plt
.offset
+ 16);
3114 /* Fill in the entry in the global offset table. */
3115 bfd_put_32 (output_bfd
,
3116 (splt
->output_section
->vma
3117 + splt
->output_offset
3119 + 12), /* same offset */
3120 sgot
->contents
+ got_offset
);
3122 /* Fill in the entry in the .rela.plt section. */
3123 rela
.r_offset
= (sgot
->output_section
->vma
3124 + sgot
->output_offset
3126 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_JMP_SLOT
);
3128 loc
= srela
->contents
;
3129 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
3130 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3132 if (!h
->def_regular
)
3134 /* Mark the symbol as undefined, rather than as defined in
3135 the .plt section. Leave the value alone. */
3136 sym
->st_shndx
= SHN_UNDEF
;
3140 if (h
->got
.offset
!= (bfd_vma
) -1)
3144 Elf_Internal_Rela rela
;
3146 /* This symbol has an entry in the global offset table. Set it
3149 sgot
= htab
->root
.sgot
;
3150 srela
= htab
->root
.srelgot
;
3151 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
3153 rela
.r_offset
= (sgot
->output_section
->vma
3154 + sgot
->output_offset
3155 + (h
->got
.offset
&~ 1));
3157 /* If this is a -Bsymbolic link, and the symbol is defined
3158 locally, we just want to emit a RELATIVE reloc. Likewise if
3159 the symbol was forced to be local because of a version file.
3160 The entry in the global offset table will already have been
3161 initialized in the relocate_section function. */
3162 if (bfd_link_pic (info
)
3168 rela
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
3169 rela
.r_addend
= (h
->root
.u
.def
.value
3170 + h
->root
.u
.def
.section
->output_section
->vma
3171 + h
->root
.u
.def
.section
->output_offset
);
3175 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
3176 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
3177 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_GLOB_DAT
);
3181 loc
= srela
->contents
;
3182 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
3183 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3184 ++srela
->reloc_count
;
3190 Elf_Internal_Rela rela
;
3192 /* This symbols needs a copy reloc. Set it up. */
3194 BFD_ASSERT (h
->dynindx
!= -1
3195 && (h
->root
.type
== bfd_link_hash_defined
3196 || h
->root
.type
== bfd_link_hash_defweak
));
3198 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
3199 BFD_ASSERT (s
!= NULL
);
3201 rela
.r_offset
= (h
->root
.u
.def
.value
3202 + h
->root
.u
.def
.section
->output_section
->vma
3203 + h
->root
.u
.def
.section
->output_offset
);
3204 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_COPY
);
3207 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
3208 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3212 /* Mark some specially defined symbols as absolute. */
3213 if (h
== htab
->root
.hdynamic
|| h
== htab
->root
.hgot
)
3214 sym
->st_shndx
= SHN_ABS
;
3220 /* Finish up the dynamic sections. */
3223 m32r_elf_finish_dynamic_sections (bfd
*output_bfd
,
3224 struct bfd_link_info
*info
)
3226 struct elf_m32r_link_hash_table
*htab
;
3232 printf ("m32r_elf_finish_dynamic_sections()\n");
3235 htab
= m32r_elf_hash_table (info
);
3239 dynobj
= htab
->root
.dynobj
;
3241 sgot
= htab
->root
.sgotplt
;
3242 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3244 if (htab
->root
.dynamic_sections_created
)
3247 Elf32_External_Dyn
*dyncon
, *dynconend
;
3249 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
3251 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3252 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3254 for (; dyncon
< dynconend
; dyncon
++)
3256 Elf_Internal_Dyn dyn
;
3259 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3267 s
= htab
->root
.sgotplt
;
3270 s
= htab
->root
.srelplt
;
3272 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3273 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3277 s
= htab
->root
.srelplt
;
3278 dyn
.d_un
.d_val
= s
->size
;
3279 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3284 /* Fill in the first entry in the procedure linkage table. */
3285 splt
= htab
->root
.splt
;
3286 if (splt
&& splt
->size
> 0)
3288 if (bfd_link_pic (info
))
3290 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
3291 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
3292 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
3293 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
3294 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
3299 /* addr = .got + 4 */
3300 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
3301 bfd_put_32 (output_bfd
,
3302 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
3304 bfd_put_32 (output_bfd
,
3305 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
3306 splt
->contents
+ 4);
3307 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
3308 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
3309 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
3312 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
3317 /* Fill in the first three entries in the global offset table. */
3318 if (sgot
&& sgot
->size
> 0)
3321 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
3323 bfd_put_32 (output_bfd
,
3324 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
3326 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
3327 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
3329 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3336 /* Set the right machine number. */
3339 m32r_elf_object_p (bfd
*abfd
)
3341 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3344 case E_M32R_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r
); break;
3345 case E_M32RX_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32rx
); break;
3346 case E_M32R2_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r2
); break;
3351 /* Store the machine number in the flags field. */
3354 m32r_elf_final_write_processing (bfd
*abfd
)
3358 switch (bfd_get_mach (abfd
))
3361 case bfd_mach_m32r
: val
= E_M32R_ARCH
; break;
3362 case bfd_mach_m32rx
: val
= E_M32RX_ARCH
; break;
3363 case bfd_mach_m32r2
: val
= E_M32R2_ARCH
; break;
3366 elf_elfheader (abfd
)->e_flags
&=~ EF_M32R_ARCH
;
3367 elf_elfheader (abfd
)->e_flags
|= val
;
3368 return _bfd_elf_final_write_processing (abfd
);
3371 /* Function to keep M32R specific file flags. */
3374 m32r_elf_set_private_flags (bfd
*abfd
, flagword flags
)
3376 BFD_ASSERT (!elf_flags_init (abfd
)
3377 || elf_elfheader (abfd
)->e_flags
== flags
);
3379 elf_elfheader (abfd
)->e_flags
= flags
;
3380 elf_flags_init (abfd
) = TRUE
;
3384 /* Merge backend specific data from an object file to the output
3385 object file when linking. */
3388 m32r_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3390 bfd
*obfd
= info
->output_bfd
;
3394 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3395 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3398 in_flags
= elf_elfheader (ibfd
)->e_flags
;
3399 out_flags
= elf_elfheader (obfd
)->e_flags
;
3401 if (! elf_flags_init (obfd
))
3403 /* If the input is the default architecture then do not
3404 bother setting the flags for the output architecture,
3405 instead allow future merges to do this. If no future
3406 merges ever set these flags then they will retain their
3407 unitialised values, which surprise surprise, correspond
3408 to the default values. */
3409 if (bfd_get_arch_info (ibfd
)->the_default
)
3412 elf_flags_init (obfd
) = TRUE
;
3413 elf_elfheader (obfd
)->e_flags
= in_flags
;
3415 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
3416 && bfd_get_arch_info (obfd
)->the_default
)
3417 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
3418 bfd_get_mach (ibfd
));
3423 /* Check flag compatibility. */
3424 if (in_flags
== out_flags
)
3427 if ((in_flags
& EF_M32R_ARCH
) != (out_flags
& EF_M32R_ARCH
))
3429 if ( ((in_flags
& EF_M32R_ARCH
) != E_M32R_ARCH
)
3430 || ((out_flags
& EF_M32R_ARCH
) == E_M32R_ARCH
)
3431 || ((in_flags
& EF_M32R_ARCH
) == E_M32R2_ARCH
))
3434 (_("%pB: instruction set mismatch with previous modules"), ibfd
);
3436 bfd_set_error (bfd_error_bad_value
);
3444 /* Display the flags field. */
3447 m32r_elf_print_private_bfd_data (bfd
*abfd
, void * ptr
)
3449 FILE * file
= (FILE *) ptr
;
3451 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
3453 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
3455 fprintf (file
, _("private flags = %lx"), elf_elfheader (abfd
)->e_flags
);
3457 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3460 case E_M32R_ARCH
: fprintf (file
, _(": m32r instructions")); break;
3461 case E_M32RX_ARCH
: fprintf (file
, _(": m32rx instructions")); break;
3462 case E_M32R2_ARCH
: fprintf (file
, _(": m32r2 instructions")); break;
3471 m32r_elf_gc_mark_hook (asection
*sec
,
3472 struct bfd_link_info
*info
,
3473 Elf_Internal_Rela
*rel
,
3474 struct elf_link_hash_entry
*h
,
3475 Elf_Internal_Sym
*sym
)
3478 switch (ELF32_R_TYPE (rel
->r_info
))
3480 case R_M32R_GNU_VTINHERIT
:
3481 case R_M32R_GNU_VTENTRY
:
3482 case R_M32R_RELA_GNU_VTINHERIT
:
3483 case R_M32R_RELA_GNU_VTENTRY
:
3487 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3490 /* Look through the relocs for a section during the first phase.
3491 Since we don't do .gots or .plts, we just need to consider the
3492 virtual table relocs for gc. */
3495 m32r_elf_check_relocs (bfd
*abfd
,
3496 struct bfd_link_info
*info
,
3498 const Elf_Internal_Rela
*relocs
)
3500 Elf_Internal_Shdr
*symtab_hdr
;
3501 struct elf_link_hash_entry
**sym_hashes
;
3502 const Elf_Internal_Rela
*rel
;
3503 const Elf_Internal_Rela
*rel_end
;
3504 struct elf_m32r_link_hash_table
*htab
;
3508 if (bfd_link_relocatable (info
))
3511 /* Don't do anything special with non-loaded, non-alloced sections.
3512 In particular, any relocs in such sections should not affect GOT
3513 and PLT reference counting (ie. we don't allow them to create GOT
3514 or PLT entries), there's no possibility or desire to optimize TLS
3515 relocs, and there's not much point in propagating relocs to shared
3516 libs that the dynamic linker won't relocate. */
3517 if ((sec
->flags
& SEC_ALLOC
) == 0)
3521 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3522 sym_hashes
= elf_sym_hashes (abfd
);
3524 htab
= m32r_elf_hash_table (info
);
3528 dynobj
= htab
->root
.dynobj
;
3530 rel_end
= relocs
+ sec
->reloc_count
;
3531 for (rel
= relocs
; rel
< rel_end
; rel
++)
3534 struct elf_link_hash_entry
*h
;
3535 unsigned long r_symndx
;
3537 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3538 r_type
= ELF32_R_TYPE (rel
->r_info
);
3539 if (r_symndx
< symtab_hdr
->sh_info
)
3543 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3544 while (h
->root
.type
== bfd_link_hash_indirect
3545 || h
->root
.type
== bfd_link_hash_warning
)
3546 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3549 /* Some relocs require a global offset table. */
3550 if (htab
->root
.sgot
== NULL
)
3554 case R_M32R_GOT16_HI_ULO
:
3555 case R_M32R_GOT16_HI_SLO
:
3557 case R_M32R_GOTOFF_HI_ULO
:
3558 case R_M32R_GOTOFF_HI_SLO
:
3559 case R_M32R_GOTOFF_LO
:
3560 case R_M32R_GOT16_LO
:
3561 case R_M32R_GOTPC24
:
3562 case R_M32R_GOTPC_HI_ULO
:
3563 case R_M32R_GOTPC_HI_SLO
:
3564 case R_M32R_GOTPC_LO
:
3567 htab
->root
.dynobj
= dynobj
= abfd
;
3568 if (!_bfd_elf_create_got_section (dynobj
, info
))
3579 case R_M32R_GOT16_HI_ULO
:
3580 case R_M32R_GOT16_HI_SLO
:
3581 case R_M32R_GOT16_LO
:
3585 h
->got
.refcount
+= 1;
3588 bfd_signed_vma
*local_got_refcounts
;
3590 /* This is a global offset table entry for a local
3592 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3593 if (local_got_refcounts
== NULL
)
3597 size
= symtab_hdr
->sh_info
;
3598 size
*= sizeof (bfd_signed_vma
);
3599 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3600 if (local_got_refcounts
== NULL
)
3602 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3604 local_got_refcounts
[r_symndx
] += 1;
3608 case R_M32R_26_PLTREL
:
3609 /* This symbol requires a procedure linkage table entry. We
3610 actually build the entry in adjust_dynamic_symbol,
3611 because this might be a case of linking PIC code without
3612 linking in any dynamic objects, in which case we don't
3613 need to generate a procedure linkage table after all. */
3615 /* If this is a local symbol, we resolve it directly without
3616 creating a procedure linkage table entry. */
3620 if (h
->forced_local
)
3624 h
->plt
.refcount
+= 1;
3627 case R_M32R_16_RELA
:
3628 case R_M32R_24_RELA
:
3629 case R_M32R_32_RELA
:
3631 case R_M32R_HI16_ULO_RELA
:
3632 case R_M32R_HI16_SLO_RELA
:
3633 case R_M32R_LO16_RELA
:
3634 case R_M32R_SDA16_RELA
:
3635 case R_M32R_10_PCREL_RELA
:
3636 case R_M32R_18_PCREL_RELA
:
3637 case R_M32R_26_PCREL_RELA
:
3639 if (h
!= NULL
&& !bfd_link_pic (info
))
3642 h
->plt
.refcount
+= 1;
3645 /* If we are creating a shared library, and this is a reloc
3646 against a global symbol, or a non PC relative reloc
3647 against a local symbol, then we need to copy the reloc
3648 into the shared library. However, if we are linking with
3649 -Bsymbolic, we do not need to copy a reloc against a
3650 global symbol which is defined in an object we are
3651 including in the link (i.e., DEF_REGULAR is set). At
3652 this point we have not seen all the input files, so it is
3653 possible that DEF_REGULAR is not set now but will be set
3654 later (it is never cleared). We account for that
3655 possibility below by storing information in the
3656 dyn_relocs field of the hash table entry. A similar
3657 situation occurs when creating shared libraries and symbol
3658 visibility changes render the symbol local.
3660 If on the other hand, we are creating an executable, we
3661 may need to keep relocations for symbols satisfied by a
3662 dynamic library if we manage to avoid copy relocs for the
3664 if ((bfd_link_pic (info
)
3665 && (sec
->flags
& SEC_ALLOC
) != 0
3666 && (( r_type
!= R_M32R_26_PCREL_RELA
3667 && r_type
!= R_M32R_18_PCREL_RELA
3668 && r_type
!= R_M32R_10_PCREL_RELA
3669 && r_type
!= R_M32R_REL32
)
3671 && (! info
->symbolic
3672 || h
->root
.type
== bfd_link_hash_defweak
3673 || !h
->def_regular
))))
3674 || (!bfd_link_pic (info
)
3675 && (sec
->flags
& SEC_ALLOC
) != 0
3677 && (h
->root
.type
== bfd_link_hash_defweak
3678 || !h
->def_regular
)))
3680 struct elf_dyn_relocs
*p
;
3681 struct elf_dyn_relocs
**head
;
3684 htab
->root
.dynobj
= dynobj
= abfd
;
3686 /* When creating a shared object, we must copy these
3687 relocs into the output file. We create a reloc
3688 section in dynobj and make room for the reloc. */
3691 sreloc
= _bfd_elf_make_dynamic_reloc_section
3692 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
3698 /* If this is a global symbol, we count the number of
3699 relocations we need for this symbol. */
3701 head
= &h
->dyn_relocs
;
3704 /* Track dynamic relocs needed for local syms too. */
3707 Elf_Internal_Sym
*isym
;
3709 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3714 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3718 vpp
= &elf_section_data (s
)->local_dynrel
;
3719 head
= (struct elf_dyn_relocs
**) vpp
;
3723 if (p
== NULL
|| p
->sec
!= sec
)
3725 size_t amt
= sizeof (*p
);
3727 p
= bfd_alloc (dynobj
, amt
);
3738 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
3739 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
3740 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
3741 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
3746 /* This relocation describes the C++ object vtable hierarchy.
3747 Reconstruct it for later use during GC. */
3748 case R_M32R_RELA_GNU_VTINHERIT
:
3749 case R_M32R_GNU_VTINHERIT
:
3750 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3754 /* This relocation describes which C++ vtable entries are actually
3755 used. Record for later use during GC. */
3756 case R_M32R_GNU_VTENTRY
:
3757 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
3760 case R_M32R_RELA_GNU_VTENTRY
:
3761 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3770 static const struct bfd_elf_special_section m32r_elf_special_sections
[] =
3772 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3773 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3774 { NULL
, 0, 0, 0, 0 }
3778 m32r_elf_section_flags (const Elf_Internal_Shdr
*hdr
)
3780 const char *name
= hdr
->bfd_section
->name
;
3782 if (strncmp (name
, ".sbss", 5) == 0
3783 || strncmp (name
, ".sdata", 6) == 0)
3784 hdr
->bfd_section
->flags
|= SEC_SMALL_DATA
;
3789 static enum elf_reloc_type_class
3790 m32r_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3791 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3792 const Elf_Internal_Rela
*rela
)
3794 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3796 case R_M32R_RELATIVE
: return reloc_class_relative
;
3797 case R_M32R_JMP_SLOT
: return reloc_class_plt
;
3798 case R_M32R_COPY
: return reloc_class_copy
;
3799 default: return reloc_class_normal
;
3803 #define ELF_ARCH bfd_arch_m32r
3804 #define ELF_TARGET_ID M32R_ELF_DATA
3805 #define ELF_MACHINE_CODE EM_M32R
3806 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
3807 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
3809 #define TARGET_BIG_SYM m32r_elf32_vec
3810 #define TARGET_BIG_NAME "elf32-m32r"
3811 #define TARGET_LITTLE_SYM m32r_elf32_le_vec
3812 #define TARGET_LITTLE_NAME "elf32-m32rle"
3814 #define elf_info_to_howto m32r_info_to_howto
3815 #define elf_info_to_howto_rel m32r_info_to_howto_rel
3816 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
3817 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
3818 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
3819 #define elf_backend_relocate_section m32r_elf_relocate_section
3820 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
3821 #define elf_backend_check_relocs m32r_elf_check_relocs
3823 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
3824 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
3825 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
3826 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
3827 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
3828 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
3829 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
3830 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
3831 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
3833 #define elf_backend_can_gc_sections 1
3835 #define elf_backend_rela_normal 1
3837 #define elf_backend_can_refcount 1
3838 #define elf_backend_want_got_plt 1
3839 #define elf_backend_plt_readonly 1
3840 #define elf_backend_want_plt_sym 0
3841 #define elf_backend_got_header_size 12
3842 #define elf_backend_dtrel_excludes_plt 1
3844 #define elf_backend_may_use_rel_p 1
3845 #ifdef USE_M32R_OLD_RELOC
3846 #define elf_backend_default_use_rela_p 0
3847 #define elf_backend_may_use_rela_p 0
3849 #define elf_backend_default_use_rela_p 1
3850 #define elf_backend_may_use_rela_p 1
3853 #define elf_backend_object_p m32r_elf_object_p
3854 #define elf_backend_final_write_processing m32r_elf_final_write_processing
3855 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
3856 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
3857 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
3858 #define elf_backend_special_sections m32r_elf_special_sections
3859 #define elf_backend_section_flags m32r_elf_section_flags
3861 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
3863 #include "elf32-target.h"
3865 #undef ELF_MAXPAGESIZE
3866 #define ELF_MAXPAGESIZE 0x1000
3868 #undef TARGET_BIG_SYM
3869 #define TARGET_BIG_SYM m32r_elf32_linux_vec
3870 #undef TARGET_BIG_NAME
3871 #define TARGET_BIG_NAME "elf32-m32r-linux"
3872 #undef TARGET_LITTLE_SYM
3873 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
3874 #undef TARGET_LITTLE_NAME
3875 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
3877 #define elf32_bed elf32_m32r_lin_bed
3879 #include "elf32-target.h"