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 /* Adjust a symbol defined by a dynamic object and referenced by a
1704 regular object. The current definition is in some section of the
1705 dynamic object, but we're not including those sections. We have to
1706 change the definition to something the rest of the link can
1710 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1711 struct elf_link_hash_entry
*h
)
1713 struct elf_m32r_link_hash_table
*htab
;
1718 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1721 dynobj
= elf_hash_table (info
)->dynobj
;
1723 /* Make sure we know what is going on here. */
1724 BFD_ASSERT (dynobj
!= NULL
1729 && !h
->def_regular
)));
1731 /* If this is a function, put it in the procedure linkage table. We
1732 will fill in the contents of the procedure linkage table later,
1733 when we know the address of the .got section. */
1734 if (h
->type
== STT_FUNC
1737 if (! bfd_link_pic (info
)
1740 && h
->root
.type
!= bfd_link_hash_undefweak
1741 && h
->root
.type
!= bfd_link_hash_undefined
)
1743 /* This case can occur if we saw a PLT reloc in an input
1744 file, but the symbol was never referred to by a dynamic
1745 object. In such a case, we don't actually need to build
1746 a procedure linkage table, and we can just do a PCREL
1748 h
->plt
.offset
= (bfd_vma
) -1;
1755 h
->plt
.offset
= (bfd_vma
) -1;
1757 /* If this is a weak symbol, and there is a real definition, the
1758 processor independent code will have arranged for us to see the
1759 real definition first, and we can just use the same value. */
1760 if (h
->is_weakalias
)
1762 struct elf_link_hash_entry
*def
= weakdef (h
);
1763 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1764 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1765 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1769 /* This is a reference to a symbol defined by a dynamic object which
1770 is not a function. */
1772 /* If we are creating a shared library, we must presume that the
1773 only references to the symbol are via the global offset table.
1774 For such cases we need not do anything here; the relocations will
1775 be handled correctly by relocate_section. */
1776 if (bfd_link_pic (info
))
1779 /* If there are no references to this symbol that do not use the
1780 GOT, we don't need to generate a copy reloc. */
1781 if (!h
->non_got_ref
)
1784 /* If -z nocopyreloc was given, we won't generate them either. */
1785 if (0 && info
->nocopyreloc
)
1791 /* If we don't find any dynamic relocs in read-only sections, then
1792 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1793 if (0 && !_bfd_elf_readonly_dynrelocs (h
))
1799 /* We must allocate the symbol in our .dynbss section, which will
1800 become part of the .bss section of the executable. There will be
1801 an entry for this symbol in the .dynsym section. The dynamic
1802 object will contain position independent code, so all references
1803 from the dynamic object to this symbol will go through the global
1804 offset table. The dynamic linker will use the .dynsym entry to
1805 determine the address it must put in the global offset table, so
1806 both the dynamic object and the regular object will refer to the
1807 same memory location for the variable. */
1809 htab
= m32r_elf_hash_table (info
);
1814 BFD_ASSERT (s
!= NULL
);
1816 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1817 to copy the initial value out of the dynamic object and into the
1818 runtime process image. We need to remember the offset into the
1819 .rela.bss section we are going to use. */
1820 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1824 srel
= htab
->srelbss
;
1825 BFD_ASSERT (srel
!= NULL
);
1826 srel
->size
+= sizeof (Elf32_External_Rela
);
1830 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1833 /* Allocate space in .plt, .got and associated reloc sections for
1837 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1839 struct bfd_link_info
*info
;
1840 struct elf_m32r_link_hash_table
*htab
;
1841 struct elf_dyn_relocs
*p
;
1843 if (h
->root
.type
== bfd_link_hash_indirect
)
1846 info
= (struct bfd_link_info
*) inf
;
1847 htab
= m32r_elf_hash_table (info
);
1851 if (htab
->root
.dynamic_sections_created
1852 && h
->plt
.refcount
> 0)
1854 /* Make sure this symbol is output as a dynamic symbol.
1855 Undefined weak syms won't yet be marked as dynamic. */
1856 if (h
->dynindx
== -1
1857 && !h
->forced_local
)
1859 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1863 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
1865 asection
*s
= htab
->root
.splt
;
1867 /* If this is the first .plt entry, make room for the special
1870 s
->size
+= PLT_ENTRY_SIZE
;
1872 h
->plt
.offset
= s
->size
;
1874 /* If this symbol is not defined in a regular file, and we are
1875 not generating a shared library, then set the symbol to this
1876 location in the .plt. This is required to make function
1877 pointers compare as equal between the normal executable and
1878 the shared library. */
1879 if (! bfd_link_pic (info
)
1882 h
->root
.u
.def
.section
= s
;
1883 h
->root
.u
.def
.value
= h
->plt
.offset
;
1886 /* Make room for this entry. */
1887 s
->size
+= PLT_ENTRY_SIZE
;
1889 /* We also need to make an entry in the .got.plt section, which
1890 will be placed in the .got section by the linker script. */
1891 htab
->root
.sgotplt
->size
+= 4;
1893 /* We also need to make an entry in the .rel.plt section. */
1894 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1898 h
->plt
.offset
= (bfd_vma
) -1;
1904 h
->plt
.offset
= (bfd_vma
) -1;
1908 if (h
->got
.refcount
> 0)
1913 /* Make sure this symbol is output as a dynamic symbol.
1914 Undefined weak syms won't yet be marked as dynamic. */
1915 if (h
->dynindx
== -1
1916 && !h
->forced_local
)
1918 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1922 s
= htab
->root
.sgot
;
1924 h
->got
.offset
= s
->size
;
1926 dyn
= htab
->root
.dynamic_sections_created
;
1927 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
1928 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1931 h
->got
.offset
= (bfd_vma
) -1;
1933 if (h
->dyn_relocs
== NULL
)
1936 /* In the shared -Bsymbolic case, discard space allocated for
1937 dynamic pc-relative relocs against symbols which turn out to be
1938 defined in regular objects. For the normal shared case, discard
1939 space for pc-relative relocs that have become local due to symbol
1940 visibility changes. */
1942 if (bfd_link_pic (info
))
1948 struct elf_dyn_relocs
**pp
;
1950 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
;)
1952 p
->count
-= p
->pc_count
;
1961 /* Also discard relocs on undefined weak syms with non-default
1963 if (h
->dyn_relocs
!= NULL
1964 && h
->root
.type
== bfd_link_hash_undefweak
)
1966 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1967 h
->dyn_relocs
= NULL
;
1969 /* Make sure undefined weak symbols are output as a dynamic
1971 else if (h
->dynindx
== -1
1972 && !h
->forced_local
)
1974 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1981 /* For the non-shared case, discard space for relocs against
1982 symbols which turn out to need copy relocs or are not
1988 || (htab
->root
.dynamic_sections_created
1989 && (h
->root
.type
== bfd_link_hash_undefweak
1990 || h
->root
.type
== bfd_link_hash_undefined
))))
1992 /* Make sure this symbol is output as a dynamic symbol.
1993 Undefined weak syms won't yet be marked as dynamic. */
1994 if (h
->dynindx
== -1
1995 && !h
->forced_local
)
1997 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2001 /* If that succeeded, we know we'll be keeping all the
2003 if (h
->dynindx
!= -1)
2007 h
->dyn_relocs
= NULL
;
2012 /* Finally, allocate space. */
2013 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2015 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2016 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2022 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2023 read-only sections. */
2026 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2030 if (h
->root
.type
== bfd_link_hash_indirect
)
2033 sec
= _bfd_elf_readonly_dynrelocs (h
);
2036 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2038 info
->flags
|= DF_TEXTREL
;
2039 info
->callbacks
->minfo
2040 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2041 sec
->owner
, h
->root
.root
.string
, sec
);
2043 /* Not an error, just cut short the traversal. */
2049 /* Set the sizes of the dynamic sections. */
2052 m32r_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2053 struct bfd_link_info
*info
)
2055 struct elf_m32r_link_hash_table
*htab
;
2062 printf ("m32r_elf_size_dynamic_sections()\n");
2065 htab
= m32r_elf_hash_table (info
);
2069 dynobj
= htab
->root
.dynobj
;
2070 BFD_ASSERT (dynobj
!= NULL
);
2072 if (htab
->root
.dynamic_sections_created
)
2074 /* Set the contents of the .interp section to the interpreter. */
2075 if (bfd_link_executable (info
) && !info
->nointerp
)
2077 s
= bfd_get_linker_section (dynobj
, ".interp");
2078 BFD_ASSERT (s
!= NULL
);
2079 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2080 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2084 /* Set up .got offsets for local syms, and space for local dynamic
2086 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2088 bfd_signed_vma
*local_got
;
2089 bfd_signed_vma
*end_local_got
;
2090 bfd_size_type locsymcount
;
2091 Elf_Internal_Shdr
*symtab_hdr
;
2094 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2097 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2099 struct elf_dyn_relocs
*p
;
2101 for (p
= ((struct elf_dyn_relocs
*)
2102 elf_section_data (s
)->local_dynrel
);
2106 if (! bfd_is_abs_section (p
->sec
)
2107 && bfd_is_abs_section (p
->sec
->output_section
))
2109 /* Input section has been discarded, either because
2110 it is a copy of a linkonce section or due to
2111 linker script /DISCARD/, so we'll be discarding
2114 else if (p
->count
!= 0)
2116 srel
= elf_section_data (p
->sec
)->sreloc
;
2117 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2118 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2119 info
->flags
|= DF_TEXTREL
;
2124 local_got
= elf_local_got_refcounts (ibfd
);
2128 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2129 locsymcount
= symtab_hdr
->sh_info
;
2130 end_local_got
= local_got
+ locsymcount
;
2131 s
= htab
->root
.sgot
;
2132 srel
= htab
->root
.srelgot
;
2133 for (; local_got
< end_local_got
; ++local_got
)
2137 *local_got
= s
->size
;
2139 if (bfd_link_pic (info
))
2140 srel
->size
+= sizeof (Elf32_External_Rela
);
2143 *local_got
= (bfd_vma
) -1;
2147 /* Allocate global sym .plt and .got entries, and space for global
2148 sym dynamic relocs. */
2149 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2151 /* We now have determined the sizes of the various dynamic sections.
2152 Allocate memory for them. */
2154 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2156 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2159 if (s
== htab
->root
.splt
2160 || s
== htab
->root
.sgot
2161 || s
== htab
->root
.sgotplt
2162 || s
== htab
->sdynbss
)
2164 /* Strip this section if we don't need it; see the
2167 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
2169 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2172 /* We use the reloc_count field as a counter if we need
2173 to copy relocs into the output file. */
2177 /* It's not one of our sections, so don't allocate space. */
2182 /* If we don't need this section, strip it from the
2183 output file. This is mostly to handle .rela.bss and
2184 .rela.plt. We must create both sections in
2185 create_dynamic_sections, because they must be created
2186 before the linker maps input sections to output
2187 sections. The linker does that before
2188 adjust_dynamic_symbol is called, and it is that
2189 function which decides whether anything needs to go
2190 into these sections. */
2191 s
->flags
|= SEC_EXCLUDE
;
2195 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2198 /* Allocate memory for the section contents. We use bfd_zalloc
2199 here in case unused entries are not reclaimed before the
2200 section's contents are written out. This should not happen,
2201 but this way if it does, we get a R_M32R_NONE reloc instead
2203 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2204 if (s
->contents
== NULL
)
2208 if (htab
->root
.dynamic_sections_created
)
2210 /* Add some entries to the .dynamic section. We fill in the
2211 values later, in m32r_elf_finish_dynamic_sections, but we
2212 must add the entries now so that we get the correct size for
2213 the .dynamic section. The DT_DEBUG entry is filled in by the
2214 dynamic linker and used by the debugger. */
2215 #define add_dynamic_entry(TAG, VAL) \
2216 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2218 if (bfd_link_executable (info
))
2220 if (! add_dynamic_entry (DT_DEBUG
, 0))
2224 if (htab
->root
.splt
->size
!= 0)
2226 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2227 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2228 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2229 || ! add_dynamic_entry (DT_JMPREL
, 0))
2235 if (! add_dynamic_entry (DT_RELA
, 0)
2236 || ! add_dynamic_entry (DT_RELASZ
, 0)
2237 || ! add_dynamic_entry (DT_RELAENT
,
2238 sizeof (Elf32_External_Rela
)))
2241 /* If any dynamic relocs apply to a read-only section,
2242 then we need a DT_TEXTREL entry. */
2243 if ((info
->flags
& DF_TEXTREL
) == 0)
2244 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
2246 if ((info
->flags
& DF_TEXTREL
) != 0)
2248 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2253 #undef add_dynamic_entry
2258 /* Relocate an M32R/D ELF section.
2259 There is some attempt to make this function usable for many architectures,
2260 both for RELA and REL type relocs, if only to serve as a learning tool.
2262 The RELOCATE_SECTION function is called by the new ELF backend linker
2263 to handle the relocations for a section.
2265 The relocs are always passed as Rela structures; if the section
2266 actually uses Rel structures, the r_addend field will always be
2269 This function is responsible for adjust the section contents as
2270 necessary, and (if using Rela relocs and generating a
2271 relocatable output file) adjusting the reloc addend as
2274 This function does not have to worry about setting the reloc
2275 address or the reloc symbol index.
2277 LOCAL_SYMS is a pointer to the swapped in local symbols.
2279 LOCAL_SECTIONS is an array giving the section in the input file
2280 corresponding to the st_shndx field of each local symbol.
2282 The global hash table entry for the global symbols can be found
2283 via elf_sym_hashes (input_bfd).
2285 When generating relocatable output, this function must handle
2286 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2287 going to be the section symbol corresponding to the output
2288 section, which means that the addend must be adjusted
2292 m32r_elf_relocate_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2293 struct bfd_link_info
*info
,
2295 asection
*input_section
,
2297 Elf_Internal_Rela
*relocs
,
2298 Elf_Internal_Sym
*local_syms
,
2299 asection
**local_sections
)
2301 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2302 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
2303 Elf_Internal_Rela
*rel
, *relend
;
2304 /* Assume success. */
2305 bfd_boolean ret
= TRUE
;
2306 struct elf_m32r_link_hash_table
*htab
= m32r_elf_hash_table (info
);
2307 bfd_vma
*local_got_offsets
;
2308 asection
*sgot
, *splt
, *sreloc
;
2309 bfd_vma high_address
= bfd_get_section_limit (input_bfd
, input_section
);
2314 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2316 sgot
= htab
->root
.sgot
;
2317 splt
= htab
->root
.splt
;
2321 relend
= relocs
+ input_section
->reloc_count
;
2322 for (; rel
< relend
; rel
++)
2325 reloc_howto_type
*howto
;
2326 unsigned long r_symndx
;
2327 struct elf_link_hash_entry
*h
;
2328 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2329 ensure it's zero (we use REL relocs, not RELA). Therefore this
2330 should be assigning zero to `addend', but for clarity we use
2332 bfd_vma addend
= rel
->r_addend
;
2333 bfd_vma offset
= rel
->r_offset
;
2335 Elf_Internal_Sym
*sym
;
2337 const char *sym_name
;
2338 bfd_reloc_status_type r
;
2339 const char *errmsg
= NULL
;
2340 bfd_boolean use_rel
= FALSE
;
2343 r_type
= ELF32_R_TYPE (rel
->r_info
);
2344 if (r_type
< 0 || r_type
>= (int) R_M32R_max
)
2346 /* xgettext:c-format */
2347 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2348 input_bfd
, (int) r_type
);
2349 bfd_set_error (bfd_error_bad_value
);
2354 if ( r_type
== R_M32R_GNU_VTENTRY
2355 || r_type
== R_M32R_GNU_VTINHERIT
2356 || r_type
== R_M32R_NONE
2357 || r_type
== R_M32R_RELA_GNU_VTENTRY
2358 || r_type
== R_M32R_RELA_GNU_VTINHERIT
)
2361 if (r_type
<= R_M32R_GNU_VTENTRY
)
2364 howto
= m32r_elf_howto_table
+ r_type
;
2365 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2371 if (r_symndx
< symtab_hdr
->sh_info
)
2374 sym
= local_syms
+ r_symndx
;
2375 sec
= local_sections
[r_symndx
];
2376 sym_name
= "<local symbol>";
2380 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2381 addend
= rel
->r_addend
;
2385 relocation
= (sec
->output_section
->vma
2386 + sec
->output_offset
2392 /* External symbol. */
2395 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2397 if (info
->wrap_hash
!= NULL
2398 && (input_section
->flags
& SEC_DEBUGGING
) != 0)
2399 h
= ((struct elf_link_hash_entry
*)
2400 unwrap_hash_lookup (info
, input_bfd
, &h
->root
));
2402 while (h
->root
.type
== bfd_link_hash_indirect
2403 || h
->root
.type
== bfd_link_hash_warning
)
2404 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2405 sym_name
= h
->root
.root
.string
;
2407 if (h
->root
.type
== bfd_link_hash_defined
2408 || h
->root
.type
== bfd_link_hash_defweak
)
2411 sec
= h
->root
.u
.def
.section
;
2413 dyn
= htab
->root
.dynamic_sections_created
;
2414 sec
= h
->root
.u
.def
.section
;
2415 if (r_type
== R_M32R_GOTPC24
2416 || (r_type
== R_M32R_GOTPC_HI_ULO
2417 || r_type
== R_M32R_GOTPC_HI_SLO
2418 || r_type
== R_M32R_GOTPC_LO
)
2419 || (r_type
== R_M32R_26_PLTREL
2420 && h
->plt
.offset
!= (bfd_vma
) -1)
2421 || ((r_type
== R_M32R_GOT24
2422 || r_type
== R_M32R_GOT16_HI_ULO
2423 || r_type
== R_M32R_GOT16_HI_SLO
2424 || r_type
== R_M32R_GOT16_LO
)
2425 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2426 bfd_link_pic (info
),
2428 && (! bfd_link_pic (info
)
2429 || (! info
->symbolic
&& h
->dynindx
!= -1)
2430 || !h
->def_regular
))
2431 || (bfd_link_pic (info
)
2432 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2434 && (((r_type
== R_M32R_16_RELA
2435 || r_type
== R_M32R_32_RELA
2436 || r_type
== R_M32R_24_RELA
2437 || r_type
== R_M32R_HI16_ULO_RELA
2438 || r_type
== R_M32R_HI16_SLO_RELA
2439 || r_type
== R_M32R_LO16_RELA
)
2440 && !h
->forced_local
)
2441 || r_type
== R_M32R_REL32
2442 || r_type
== R_M32R_10_PCREL_RELA
2443 || r_type
== R_M32R_18_PCREL_RELA
2444 || r_type
== R_M32R_26_PCREL_RELA
)
2445 && ((input_section
->flags
& SEC_ALLOC
) != 0
2446 /* DWARF will emit R_M32R_16(24,32) relocations
2447 in its sections against symbols defined
2448 externally in shared libraries. We can't do
2449 anything with them here. */
2450 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2451 && h
->def_dynamic
))))
2453 /* In these cases, we don't need the relocation
2454 value. We check specially because in some
2455 obscure cases sec->output_section will be NULL. */
2457 else if (sec
->output_section
!= NULL
)
2458 relocation
= (h
->root
.u
.def
.value
2459 + sec
->output_section
->vma
2460 + sec
->output_offset
);
2461 else if (!bfd_link_relocatable (info
)
2462 && (_bfd_elf_section_offset (output_bfd
, info
,
2468 /* xgettext:c-format */
2469 (_("%pB(%pA+%#" PRIx64
"): unresolvable %s relocation "
2470 "against symbol `%s'"),
2473 (uint64_t) rel
->r_offset
,
2475 h
->root
.root
.string
);
2478 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2480 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
2481 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2483 else if (!bfd_link_relocatable (info
))
2484 info
->callbacks
->undefined_symbol
2485 (info
, h
->root
.root
.string
, input_bfd
, input_section
, offset
,
2486 (info
->unresolved_syms_in_objects
== RM_DIAGNOSE
2487 && !info
->warn_unresolved_syms
)
2488 || ELF_ST_VISIBILITY (h
->other
));
2491 if (sec
!= NULL
&& discarded_section (sec
))
2492 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2493 rel
, 1, relend
, howto
, 0, contents
);
2495 if (bfd_link_relocatable (info
) && !use_rel
)
2497 /* This is a relocatable link. We don't have to change
2498 anything, unless the reloc is against a section symbol,
2499 in which case we have to adjust according to where the
2500 section symbol winds up in the output section. */
2501 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2502 rel
->r_addend
+= sec
->output_offset
;
2506 if (bfd_link_relocatable (info
) && use_rel
)
2508 /* This is a relocatable link. We don't have to change
2509 anything, unless the reloc is against a section symbol,
2510 in which case we have to adjust according to where the
2511 section symbol winds up in the output section. */
2512 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
2515 addend
+= sec
->output_offset
;
2517 /* If partial_inplace, we need to store any additional addend
2518 back in the section. */
2519 if (! howto
->partial_inplace
)
2521 /* ??? Here is a nice place to call a special_function
2523 if (r_type
!= R_M32R_HI16_SLO
&& r_type
!= R_M32R_HI16_ULO
)
2524 r
= _bfd_relocate_contents (howto
, input_bfd
,
2525 addend
, contents
+ offset
);
2528 Elf_Internal_Rela
*lorel
;
2530 /* We allow an arbitrary number of HI16 relocs before the
2531 LO16 reloc. This permits gcc to emit the HI and LO relocs
2533 for (lorel
= rel
+ 1;
2535 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2536 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2540 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2542 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2547 r
= _bfd_relocate_contents (howto
, input_bfd
,
2548 addend
, contents
+ offset
);
2553 /* Sanity check the address. */
2554 if (offset
> high_address
)
2556 r
= bfd_reloc_outofrange
;
2560 switch ((int) r_type
)
2563 /* Relocation is relative to the start of the global offset
2564 table (for ld24 rx, #uimm24). eg access at label+addend
2566 ld24 rx. #label@GOTOFF + addend
2569 BFD_ASSERT (sgot
!= NULL
);
2571 relocation
= -(relocation
- sgot
->output_section
->vma
);
2572 rel
->r_addend
= -rel
->r_addend
;
2575 case R_M32R_GOTOFF_HI_ULO
:
2576 case R_M32R_GOTOFF_HI_SLO
:
2577 case R_M32R_GOTOFF_LO
:
2578 BFD_ASSERT (sgot
!= NULL
);
2580 relocation
-= sgot
->output_section
->vma
;
2582 if ((r_type
== R_M32R_GOTOFF_HI_SLO
)
2583 && ((relocation
+ rel
->r_addend
) & 0x8000))
2584 rel
->r_addend
+= 0x10000;
2587 case R_M32R_GOTPC24
:
2588 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2589 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2591 relocation
= sgot
->output_section
->vma
;
2594 case R_M32R_GOTPC_HI_ULO
:
2595 case R_M32R_GOTPC_HI_SLO
:
2596 case R_M32R_GOTPC_LO
:
2598 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2600 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2601 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2604 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2605 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2607 relocation
= sgot
->output_section
->vma
;
2608 relocation
-= (input_section
->output_section
->vma
2609 + input_section
->output_offset
2611 if ((r_type
== R_M32R_GOTPC_HI_SLO
)
2612 && ((relocation
+ rel
->r_addend
) & 0x8000))
2613 rel
->r_addend
+= 0x10000;
2617 case R_M32R_GOT16_HI_ULO
:
2618 case R_M32R_GOT16_HI_SLO
:
2619 case R_M32R_GOT16_LO
:
2622 /* Relocation is to the entry for this symbol in the global
2624 BFD_ASSERT (sgot
!= NULL
);
2631 off
= h
->got
.offset
;
2632 BFD_ASSERT (off
!= (bfd_vma
) -1);
2634 dyn
= htab
->root
.dynamic_sections_created
;
2635 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2636 bfd_link_pic (info
),
2638 || (bfd_link_pic (info
)
2644 /* This is actually a static link, or it is a
2645 -Bsymbolic link and the symbol is defined
2646 locally, or the symbol was forced to be local
2647 because of a version file. We must initialize
2648 this entry in the global offset table. Since the
2649 offset must always be a multiple of 4, we use the
2650 least significant bit to record whether we have
2651 initialized it already.
2653 When doing a dynamic link, we create a .rela.got
2654 relocation entry to initialize the value. This
2655 is done in the finish_dynamic_symbol routine. */
2660 bfd_put_32 (output_bfd
, relocation
,
2661 sgot
->contents
+ off
);
2666 relocation
= sgot
->output_offset
+ off
;
2673 BFD_ASSERT (local_got_offsets
!= NULL
2674 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
2676 off
= local_got_offsets
[r_symndx
];
2678 /* The offset must always be a multiple of 4. We use
2679 the least significant bit to record whether we have
2680 already processed this entry. */
2685 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
2687 if (bfd_link_pic (info
))
2690 Elf_Internal_Rela outrel
;
2692 /* We need to generate a R_M32R_RELATIVE reloc
2693 for the dynamic linker. */
2694 srelgot
= htab
->root
.srelgot
;
2695 BFD_ASSERT (srelgot
!= NULL
);
2697 outrel
.r_offset
= (sgot
->output_section
->vma
2698 + sgot
->output_offset
2700 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2701 outrel
.r_addend
= relocation
;
2702 loc
= srelgot
->contents
;
2703 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
2704 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2705 ++srelgot
->reloc_count
;
2708 local_got_offsets
[r_symndx
] |= 1;
2711 relocation
= sgot
->output_offset
+ off
;
2713 if ((r_type
== R_M32R_GOT16_HI_SLO
)
2714 && ((relocation
+ rel
->r_addend
) & 0x8000))
2715 rel
->r_addend
+= 0x10000;
2719 case R_M32R_26_PLTREL
:
2720 /* Relocation is to the entry for this symbol in the
2721 procedure linkage table. */
2723 /* The native assembler will generate a 26_PLTREL reloc
2724 for a local symbol if you assemble a call from one
2725 section to another when using -K pic. */
2729 if (h
->forced_local
)
2732 if (h
->plt
.offset
== (bfd_vma
) -1)
2733 /* We didn't make a PLT entry for this symbol. This
2734 happens when statically linking PIC code, or when
2735 using -Bsymbolic. */
2738 relocation
= (splt
->output_section
->vma
2739 + splt
->output_offset
2743 case R_M32R_HI16_SLO_RELA
:
2744 if ((relocation
+ rel
->r_addend
) & 0x8000)
2745 rel
->r_addend
+= 0x10000;
2748 case R_M32R_16_RELA
:
2749 case R_M32R_24_RELA
:
2750 case R_M32R_32_RELA
:
2752 case R_M32R_10_PCREL_RELA
:
2753 case R_M32R_18_PCREL_RELA
:
2754 case R_M32R_26_PCREL_RELA
:
2755 case R_M32R_HI16_ULO_RELA
:
2756 case R_M32R_LO16_RELA
:
2757 if (bfd_link_pic (info
)
2758 && r_symndx
!= STN_UNDEF
2759 && (input_section
->flags
& SEC_ALLOC
) != 0
2760 && (( r_type
!= R_M32R_10_PCREL_RELA
2761 && r_type
!= R_M32R_18_PCREL_RELA
2762 && r_type
!= R_M32R_26_PCREL_RELA
2763 && r_type
!= R_M32R_REL32
)
2766 && (! info
->symbolic
2767 || !h
->def_regular
))))
2769 Elf_Internal_Rela outrel
;
2770 bfd_boolean skip
, relocate
;
2773 /* When generating a shared object, these relocations
2774 are copied into the output file to be resolved at run
2778 sreloc
= _bfd_elf_get_dynamic_reloc_section
2779 (input_bfd
, input_section
, /*rela?*/ TRUE
);
2787 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2791 if (outrel
.r_offset
== (bfd_vma
) -1)
2793 else if (outrel
.r_offset
== (bfd_vma
) -2)
2794 skip
= relocate
= TRUE
;
2795 outrel
.r_offset
+= (input_section
->output_section
->vma
2796 + input_section
->output_offset
);
2799 memset (&outrel
, 0, sizeof outrel
);
2800 else if ( r_type
== R_M32R_10_PCREL_RELA
2801 || r_type
== R_M32R_18_PCREL_RELA
2802 || r_type
== R_M32R_26_PCREL_RELA
2803 || r_type
== R_M32R_REL32
)
2805 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
2806 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2807 outrel
.r_addend
= rel
->r_addend
;
2811 /* h->dynindx may be -1 if this symbol was marked to
2814 || ((info
->symbolic
|| h
->dynindx
== -1)
2818 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2819 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2823 BFD_ASSERT (h
->dynindx
!= -1);
2824 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2825 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2829 loc
= sreloc
->contents
;
2830 loc
+= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
2831 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2832 ++sreloc
->reloc_count
;
2834 /* If this reloc is against an external symbol, we do
2835 not want to fiddle with the addend. Otherwise, we
2836 need to include the symbol value so that it becomes
2837 an addend for the dynamic reloc. */
2842 else if (r_type
!= R_M32R_10_PCREL_RELA
)
2846 case (int) R_M32R_10_PCREL
:
2847 r
= m32r_elf_do_10_pcrel_reloc (input_bfd
, howto
, input_section
,
2849 sec
, relocation
, addend
);
2852 case (int) R_M32R_HI16_SLO
:
2853 case (int) R_M32R_HI16_ULO
:
2855 Elf_Internal_Rela
*lorel
;
2857 /* We allow an arbitrary number of HI16 relocs before the
2858 LO16 reloc. This permits gcc to emit the HI and LO relocs
2860 for (lorel
= rel
+ 1;
2862 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2863 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2867 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2869 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2870 contents
, relocation
+ addend
);
2874 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2876 relocation
, addend
);
2881 case (int) R_M32R_SDA16_RELA
:
2882 case (int) R_M32R_SDA16
:
2886 BFD_ASSERT (sec
!= NULL
);
2887 name
= bfd_section_name (sec
);
2889 if ( strcmp (name
, ".sdata") == 0
2890 || strcmp (name
, ".sbss") == 0
2891 || strcmp (name
, ".scommon") == 0)
2894 bfd
*out_bfd
= sec
->output_section
->owner
;
2896 r
= m32r_elf_final_sda_base (out_bfd
, info
,
2899 if (r
!= bfd_reloc_ok
)
2905 /* At this point `relocation' contains the object's
2907 relocation
-= sda_base
;
2908 /* Now it contains the offset from _SDA_BASE_. */
2913 /* xgettext:c-format */
2914 (_("%pB: the target (%s) of an %s relocation"
2915 " is in the wrong section (%pA)"),
2918 m32r_elf_howto_table
[(int) r_type
].name
,
2920 /*bfd_set_error (bfd_error_bad_value); ??? why? */
2927 default : /* OLD_M32R_RELOC */
2929 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2931 relocation
, addend
);
2935 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2936 contents
, rel
->r_offset
,
2937 relocation
, rel
->r_addend
);
2943 if (r
!= bfd_reloc_ok
)
2945 /* FIXME: This should be generic enough to go in a utility. */
2949 name
= h
->root
.root
.string
;
2952 name
= (bfd_elf_string_from_elf_section
2953 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
2954 if (name
== NULL
|| *name
== '\0')
2955 name
= bfd_section_name (sec
);
2963 case bfd_reloc_overflow
:
2964 (*info
->callbacks
->reloc_overflow
)
2965 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2966 (bfd_vma
) 0, input_bfd
, input_section
, offset
);
2969 case bfd_reloc_undefined
:
2970 (*info
->callbacks
->undefined_symbol
)
2971 (info
, name
, input_bfd
, input_section
, offset
, TRUE
);
2974 case bfd_reloc_outofrange
:
2975 errmsg
= _("internal error: out of range error");
2978 case bfd_reloc_notsupported
:
2979 errmsg
= _("internal error: unsupported relocation error");
2982 case bfd_reloc_dangerous
:
2983 errmsg
= _("internal error: dangerous error");
2987 errmsg
= _("internal error: unknown error");
2991 (*info
->callbacks
->warning
) (info
, errmsg
, name
, input_bfd
,
2992 input_section
, offset
);
3001 /* Finish up dynamic symbol handling. We set the contents of various
3002 dynamic sections here. */
3005 m32r_elf_finish_dynamic_symbol (bfd
*output_bfd
,
3006 struct bfd_link_info
*info
,
3007 struct elf_link_hash_entry
*h
,
3008 Elf_Internal_Sym
*sym
)
3010 struct elf_m32r_link_hash_table
*htab
;
3014 printf ("m32r_elf_finish_dynamic_symbol()\n");
3017 htab
= m32r_elf_hash_table (info
);
3021 if (h
->plt
.offset
!= (bfd_vma
) -1)
3029 Elf_Internal_Rela rela
;
3031 /* This symbol has an entry in the procedure linkage table. Set
3034 BFD_ASSERT (h
->dynindx
!= -1);
3036 splt
= htab
->root
.splt
;
3037 sgot
= htab
->root
.sgotplt
;
3038 srela
= htab
->root
.srelplt
;
3039 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
3041 /* Get the index in the procedure linkage table which
3042 corresponds to this symbol. This is the index of this symbol
3043 in all the symbols for which we are making plt entries. The
3044 first entry in the procedure linkage table is reserved. */
3045 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
3047 /* Get the offset into the .got table of the entry that
3048 corresponds to this function. Each .got entry is 4 bytes.
3049 The first three are reserved. */
3050 got_offset
= (plt_index
+ 3) * 4;
3052 /* Fill in the entry in the procedure linkage table. */
3053 if (! bfd_link_pic (info
))
3055 bfd_put_32 (output_bfd
,
3057 + (((sgot
->output_section
->vma
3058 + sgot
->output_offset
3059 + got_offset
) >> 16) & 0xffff)),
3060 splt
->contents
+ h
->plt
.offset
);
3061 bfd_put_32 (output_bfd
,
3063 + ((sgot
->output_section
->vma
3064 + sgot
->output_offset
3065 + got_offset
) & 0xffff)),
3066 splt
->contents
+ h
->plt
.offset
+ 4);
3067 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3068 splt
->contents
+ h
->plt
.offset
+ 8);
3069 bfd_put_32 (output_bfd
,
3071 + plt_index
* sizeof (Elf32_External_Rela
)),
3072 splt
->contents
+ h
->plt
.offset
+ 12);
3073 bfd_put_32 (output_bfd
,
3075 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3076 splt
->contents
+ h
->plt
.offset
+ 16);
3080 bfd_put_32 (output_bfd
,
3081 PLT_ENTRY_WORD0
+ got_offset
,
3082 splt
->contents
+ h
->plt
.offset
);
3083 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
,
3084 splt
->contents
+ h
->plt
.offset
+ 4);
3085 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3086 splt
->contents
+ h
->plt
.offset
+ 8);
3087 bfd_put_32 (output_bfd
,
3089 + plt_index
* sizeof (Elf32_External_Rela
)),
3090 splt
->contents
+ h
->plt
.offset
+ 12);
3091 bfd_put_32 (output_bfd
,
3093 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3094 splt
->contents
+ h
->plt
.offset
+ 16);
3097 /* Fill in the entry in the global offset table. */
3098 bfd_put_32 (output_bfd
,
3099 (splt
->output_section
->vma
3100 + splt
->output_offset
3102 + 12), /* same offset */
3103 sgot
->contents
+ got_offset
);
3105 /* Fill in the entry in the .rela.plt section. */
3106 rela
.r_offset
= (sgot
->output_section
->vma
3107 + sgot
->output_offset
3109 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_JMP_SLOT
);
3111 loc
= srela
->contents
;
3112 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
3113 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3115 if (!h
->def_regular
)
3117 /* Mark the symbol as undefined, rather than as defined in
3118 the .plt section. Leave the value alone. */
3119 sym
->st_shndx
= SHN_UNDEF
;
3123 if (h
->got
.offset
!= (bfd_vma
) -1)
3127 Elf_Internal_Rela rela
;
3129 /* This symbol has an entry in the global offset table. Set it
3132 sgot
= htab
->root
.sgot
;
3133 srela
= htab
->root
.srelgot
;
3134 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
3136 rela
.r_offset
= (sgot
->output_section
->vma
3137 + sgot
->output_offset
3138 + (h
->got
.offset
&~ 1));
3140 /* If this is a -Bsymbolic link, and the symbol is defined
3141 locally, we just want to emit a RELATIVE reloc. Likewise if
3142 the symbol was forced to be local because of a version file.
3143 The entry in the global offset table will already have been
3144 initialized in the relocate_section function. */
3145 if (bfd_link_pic (info
)
3151 rela
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
3152 rela
.r_addend
= (h
->root
.u
.def
.value
3153 + h
->root
.u
.def
.section
->output_section
->vma
3154 + h
->root
.u
.def
.section
->output_offset
);
3158 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
3159 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
3160 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_GLOB_DAT
);
3164 loc
= srela
->contents
;
3165 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
3166 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3167 ++srela
->reloc_count
;
3173 Elf_Internal_Rela rela
;
3175 /* This symbols needs a copy reloc. Set it up. */
3177 BFD_ASSERT (h
->dynindx
!= -1
3178 && (h
->root
.type
== bfd_link_hash_defined
3179 || h
->root
.type
== bfd_link_hash_defweak
));
3181 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
3182 BFD_ASSERT (s
!= NULL
);
3184 rela
.r_offset
= (h
->root
.u
.def
.value
3185 + h
->root
.u
.def
.section
->output_section
->vma
3186 + h
->root
.u
.def
.section
->output_offset
);
3187 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_COPY
);
3190 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
3191 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3195 /* Mark some specially defined symbols as absolute. */
3196 if (h
== htab
->root
.hdynamic
|| h
== htab
->root
.hgot
)
3197 sym
->st_shndx
= SHN_ABS
;
3203 /* Finish up the dynamic sections. */
3206 m32r_elf_finish_dynamic_sections (bfd
*output_bfd
,
3207 struct bfd_link_info
*info
)
3209 struct elf_m32r_link_hash_table
*htab
;
3215 printf ("m32r_elf_finish_dynamic_sections()\n");
3218 htab
= m32r_elf_hash_table (info
);
3222 dynobj
= htab
->root
.dynobj
;
3224 sgot
= htab
->root
.sgotplt
;
3225 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3227 if (htab
->root
.dynamic_sections_created
)
3230 Elf32_External_Dyn
*dyncon
, *dynconend
;
3232 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
3234 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3235 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3237 for (; dyncon
< dynconend
; dyncon
++)
3239 Elf_Internal_Dyn dyn
;
3242 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3250 s
= htab
->root
.sgotplt
;
3253 s
= htab
->root
.srelplt
;
3255 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3256 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3260 s
= htab
->root
.srelplt
;
3261 dyn
.d_un
.d_val
= s
->size
;
3262 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3267 /* Fill in the first entry in the procedure linkage table. */
3268 splt
= htab
->root
.splt
;
3269 if (splt
&& splt
->size
> 0)
3271 if (bfd_link_pic (info
))
3273 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
3274 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
3275 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
3276 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
3277 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
3282 /* addr = .got + 4 */
3283 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
3284 bfd_put_32 (output_bfd
,
3285 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
3287 bfd_put_32 (output_bfd
,
3288 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
3289 splt
->contents
+ 4);
3290 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
3291 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
3292 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
3295 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
3300 /* Fill in the first three entries in the global offset table. */
3301 if (sgot
&& sgot
->size
> 0)
3304 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
3306 bfd_put_32 (output_bfd
,
3307 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
3309 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
3310 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
3312 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3319 /* Set the right machine number. */
3322 m32r_elf_object_p (bfd
*abfd
)
3324 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3327 case E_M32R_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r
); break;
3328 case E_M32RX_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32rx
); break;
3329 case E_M32R2_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r2
); break;
3334 /* Store the machine number in the flags field. */
3337 m32r_elf_final_write_processing (bfd
*abfd
)
3341 switch (bfd_get_mach (abfd
))
3344 case bfd_mach_m32r
: val
= E_M32R_ARCH
; break;
3345 case bfd_mach_m32rx
: val
= E_M32RX_ARCH
; break;
3346 case bfd_mach_m32r2
: val
= E_M32R2_ARCH
; break;
3349 elf_elfheader (abfd
)->e_flags
&=~ EF_M32R_ARCH
;
3350 elf_elfheader (abfd
)->e_flags
|= val
;
3351 return _bfd_elf_final_write_processing (abfd
);
3354 /* Function to keep M32R specific file flags. */
3357 m32r_elf_set_private_flags (bfd
*abfd
, flagword flags
)
3359 BFD_ASSERT (!elf_flags_init (abfd
)
3360 || elf_elfheader (abfd
)->e_flags
== flags
);
3362 elf_elfheader (abfd
)->e_flags
= flags
;
3363 elf_flags_init (abfd
) = TRUE
;
3367 /* Merge backend specific data from an object file to the output
3368 object file when linking. */
3371 m32r_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3373 bfd
*obfd
= info
->output_bfd
;
3377 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3378 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3381 in_flags
= elf_elfheader (ibfd
)->e_flags
;
3382 out_flags
= elf_elfheader (obfd
)->e_flags
;
3384 if (! elf_flags_init (obfd
))
3386 /* If the input is the default architecture then do not
3387 bother setting the flags for the output architecture,
3388 instead allow future merges to do this. If no future
3389 merges ever set these flags then they will retain their
3390 unitialised values, which surprise surprise, correspond
3391 to the default values. */
3392 if (bfd_get_arch_info (ibfd
)->the_default
)
3395 elf_flags_init (obfd
) = TRUE
;
3396 elf_elfheader (obfd
)->e_flags
= in_flags
;
3398 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
3399 && bfd_get_arch_info (obfd
)->the_default
)
3400 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
3401 bfd_get_mach (ibfd
));
3406 /* Check flag compatibility. */
3407 if (in_flags
== out_flags
)
3410 if ((in_flags
& EF_M32R_ARCH
) != (out_flags
& EF_M32R_ARCH
))
3412 if ( ((in_flags
& EF_M32R_ARCH
) != E_M32R_ARCH
)
3413 || ((out_flags
& EF_M32R_ARCH
) == E_M32R_ARCH
)
3414 || ((in_flags
& EF_M32R_ARCH
) == E_M32R2_ARCH
))
3417 (_("%pB: instruction set mismatch with previous modules"), ibfd
);
3419 bfd_set_error (bfd_error_bad_value
);
3427 /* Display the flags field. */
3430 m32r_elf_print_private_bfd_data (bfd
*abfd
, void * ptr
)
3432 FILE * file
= (FILE *) ptr
;
3434 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
3436 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
3438 fprintf (file
, _("private flags = %lx"), elf_elfheader (abfd
)->e_flags
);
3440 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3443 case E_M32R_ARCH
: fprintf (file
, _(": m32r instructions")); break;
3444 case E_M32RX_ARCH
: fprintf (file
, _(": m32rx instructions")); break;
3445 case E_M32R2_ARCH
: fprintf (file
, _(": m32r2 instructions")); break;
3454 m32r_elf_gc_mark_hook (asection
*sec
,
3455 struct bfd_link_info
*info
,
3456 Elf_Internal_Rela
*rel
,
3457 struct elf_link_hash_entry
*h
,
3458 Elf_Internal_Sym
*sym
)
3461 switch (ELF32_R_TYPE (rel
->r_info
))
3463 case R_M32R_GNU_VTINHERIT
:
3464 case R_M32R_GNU_VTENTRY
:
3465 case R_M32R_RELA_GNU_VTINHERIT
:
3466 case R_M32R_RELA_GNU_VTENTRY
:
3470 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3473 /* Look through the relocs for a section during the first phase.
3474 Since we don't do .gots or .plts, we just need to consider the
3475 virtual table relocs for gc. */
3478 m32r_elf_check_relocs (bfd
*abfd
,
3479 struct bfd_link_info
*info
,
3481 const Elf_Internal_Rela
*relocs
)
3483 Elf_Internal_Shdr
*symtab_hdr
;
3484 struct elf_link_hash_entry
**sym_hashes
;
3485 const Elf_Internal_Rela
*rel
;
3486 const Elf_Internal_Rela
*rel_end
;
3487 struct elf_m32r_link_hash_table
*htab
;
3491 if (bfd_link_relocatable (info
))
3494 /* Don't do anything special with non-loaded, non-alloced sections.
3495 In particular, any relocs in such sections should not affect GOT
3496 and PLT reference counting (ie. we don't allow them to create GOT
3497 or PLT entries), there's no possibility or desire to optimize TLS
3498 relocs, and there's not much point in propagating relocs to shared
3499 libs that the dynamic linker won't relocate. */
3500 if ((sec
->flags
& SEC_ALLOC
) == 0)
3504 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3505 sym_hashes
= elf_sym_hashes (abfd
);
3507 htab
= m32r_elf_hash_table (info
);
3511 dynobj
= htab
->root
.dynobj
;
3513 rel_end
= relocs
+ sec
->reloc_count
;
3514 for (rel
= relocs
; rel
< rel_end
; rel
++)
3517 struct elf_link_hash_entry
*h
;
3518 unsigned long r_symndx
;
3520 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3521 r_type
= ELF32_R_TYPE (rel
->r_info
);
3522 if (r_symndx
< symtab_hdr
->sh_info
)
3526 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3527 while (h
->root
.type
== bfd_link_hash_indirect
3528 || h
->root
.type
== bfd_link_hash_warning
)
3529 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3532 /* Some relocs require a global offset table. */
3533 if (htab
->root
.sgot
== NULL
)
3537 case R_M32R_GOT16_HI_ULO
:
3538 case R_M32R_GOT16_HI_SLO
:
3540 case R_M32R_GOTOFF_HI_ULO
:
3541 case R_M32R_GOTOFF_HI_SLO
:
3542 case R_M32R_GOTOFF_LO
:
3543 case R_M32R_GOT16_LO
:
3544 case R_M32R_GOTPC24
:
3545 case R_M32R_GOTPC_HI_ULO
:
3546 case R_M32R_GOTPC_HI_SLO
:
3547 case R_M32R_GOTPC_LO
:
3550 htab
->root
.dynobj
= dynobj
= abfd
;
3551 if (!_bfd_elf_create_got_section (dynobj
, info
))
3562 case R_M32R_GOT16_HI_ULO
:
3563 case R_M32R_GOT16_HI_SLO
:
3564 case R_M32R_GOT16_LO
:
3568 h
->got
.refcount
+= 1;
3571 bfd_signed_vma
*local_got_refcounts
;
3573 /* This is a global offset table entry for a local
3575 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3576 if (local_got_refcounts
== NULL
)
3580 size
= symtab_hdr
->sh_info
;
3581 size
*= sizeof (bfd_signed_vma
);
3582 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3583 if (local_got_refcounts
== NULL
)
3585 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3587 local_got_refcounts
[r_symndx
] += 1;
3591 case R_M32R_26_PLTREL
:
3592 /* This symbol requires a procedure linkage table entry. We
3593 actually build the entry in adjust_dynamic_symbol,
3594 because this might be a case of linking PIC code without
3595 linking in any dynamic objects, in which case we don't
3596 need to generate a procedure linkage table after all. */
3598 /* If this is a local symbol, we resolve it directly without
3599 creating a procedure linkage table entry. */
3603 if (h
->forced_local
)
3607 h
->plt
.refcount
+= 1;
3610 case R_M32R_16_RELA
:
3611 case R_M32R_24_RELA
:
3612 case R_M32R_32_RELA
:
3614 case R_M32R_HI16_ULO_RELA
:
3615 case R_M32R_HI16_SLO_RELA
:
3616 case R_M32R_LO16_RELA
:
3617 case R_M32R_SDA16_RELA
:
3618 case R_M32R_10_PCREL_RELA
:
3619 case R_M32R_18_PCREL_RELA
:
3620 case R_M32R_26_PCREL_RELA
:
3622 if (h
!= NULL
&& !bfd_link_pic (info
))
3625 h
->plt
.refcount
+= 1;
3628 /* If we are creating a shared library, and this is a reloc
3629 against a global symbol, or a non PC relative reloc
3630 against a local symbol, then we need to copy the reloc
3631 into the shared library. However, if we are linking with
3632 -Bsymbolic, we do not need to copy a reloc against a
3633 global symbol which is defined in an object we are
3634 including in the link (i.e., DEF_REGULAR is set). At
3635 this point we have not seen all the input files, so it is
3636 possible that DEF_REGULAR is not set now but will be set
3637 later (it is never cleared). We account for that
3638 possibility below by storing information in the
3639 dyn_relocs field of the hash table entry. A similar
3640 situation occurs when creating shared libraries and symbol
3641 visibility changes render the symbol local.
3643 If on the other hand, we are creating an executable, we
3644 may need to keep relocations for symbols satisfied by a
3645 dynamic library if we manage to avoid copy relocs for the
3647 if ((bfd_link_pic (info
)
3648 && (sec
->flags
& SEC_ALLOC
) != 0
3649 && (( r_type
!= R_M32R_26_PCREL_RELA
3650 && r_type
!= R_M32R_18_PCREL_RELA
3651 && r_type
!= R_M32R_10_PCREL_RELA
3652 && r_type
!= R_M32R_REL32
)
3654 && (! info
->symbolic
3655 || h
->root
.type
== bfd_link_hash_defweak
3656 || !h
->def_regular
))))
3657 || (!bfd_link_pic (info
)
3658 && (sec
->flags
& SEC_ALLOC
) != 0
3660 && (h
->root
.type
== bfd_link_hash_defweak
3661 || !h
->def_regular
)))
3663 struct elf_dyn_relocs
*p
;
3664 struct elf_dyn_relocs
**head
;
3667 htab
->root
.dynobj
= dynobj
= abfd
;
3669 /* When creating a shared object, we must copy these
3670 relocs into the output file. We create a reloc
3671 section in dynobj and make room for the reloc. */
3674 sreloc
= _bfd_elf_make_dynamic_reloc_section
3675 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
3681 /* If this is a global symbol, we count the number of
3682 relocations we need for this symbol. */
3684 head
= &h
->dyn_relocs
;
3687 /* Track dynamic relocs needed for local syms too. */
3690 Elf_Internal_Sym
*isym
;
3692 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3697 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3701 vpp
= &elf_section_data (s
)->local_dynrel
;
3702 head
= (struct elf_dyn_relocs
**) vpp
;
3706 if (p
== NULL
|| p
->sec
!= sec
)
3708 size_t amt
= sizeof (*p
);
3710 p
= bfd_alloc (dynobj
, amt
);
3721 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
3722 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
3723 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
3724 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
3729 /* This relocation describes the C++ object vtable hierarchy.
3730 Reconstruct it for later use during GC. */
3731 case R_M32R_RELA_GNU_VTINHERIT
:
3732 case R_M32R_GNU_VTINHERIT
:
3733 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3737 /* This relocation describes which C++ vtable entries are actually
3738 used. Record for later use during GC. */
3739 case R_M32R_GNU_VTENTRY
:
3740 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
3743 case R_M32R_RELA_GNU_VTENTRY
:
3744 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3753 static const struct bfd_elf_special_section m32r_elf_special_sections
[] =
3755 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3756 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3757 { NULL
, 0, 0, 0, 0 }
3761 m32r_elf_section_flags (const Elf_Internal_Shdr
*hdr
)
3763 const char *name
= hdr
->bfd_section
->name
;
3765 if (strncmp (name
, ".sbss", 5) == 0
3766 || strncmp (name
, ".sdata", 6) == 0)
3767 hdr
->bfd_section
->flags
|= SEC_SMALL_DATA
;
3772 static enum elf_reloc_type_class
3773 m32r_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3774 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3775 const Elf_Internal_Rela
*rela
)
3777 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3779 case R_M32R_RELATIVE
: return reloc_class_relative
;
3780 case R_M32R_JMP_SLOT
: return reloc_class_plt
;
3781 case R_M32R_COPY
: return reloc_class_copy
;
3782 default: return reloc_class_normal
;
3786 #define ELF_ARCH bfd_arch_m32r
3787 #define ELF_TARGET_ID M32R_ELF_DATA
3788 #define ELF_MACHINE_CODE EM_M32R
3789 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
3790 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
3792 #define TARGET_BIG_SYM m32r_elf32_vec
3793 #define TARGET_BIG_NAME "elf32-m32r"
3794 #define TARGET_LITTLE_SYM m32r_elf32_le_vec
3795 #define TARGET_LITTLE_NAME "elf32-m32rle"
3797 #define elf_info_to_howto m32r_info_to_howto
3798 #define elf_info_to_howto_rel m32r_info_to_howto_rel
3799 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
3800 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
3801 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
3802 #define elf_backend_relocate_section m32r_elf_relocate_section
3803 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
3804 #define elf_backend_check_relocs m32r_elf_check_relocs
3806 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
3807 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
3808 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
3809 #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
3810 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
3811 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
3812 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
3813 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
3814 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
3816 #define elf_backend_can_gc_sections 1
3818 #define elf_backend_rela_normal 1
3820 #define elf_backend_can_refcount 1
3821 #define elf_backend_want_got_plt 1
3822 #define elf_backend_plt_readonly 1
3823 #define elf_backend_want_plt_sym 0
3824 #define elf_backend_got_header_size 12
3825 #define elf_backend_dtrel_excludes_plt 1
3827 #define elf_backend_may_use_rel_p 1
3828 #ifdef USE_M32R_OLD_RELOC
3829 #define elf_backend_default_use_rela_p 0
3830 #define elf_backend_may_use_rela_p 0
3832 #define elf_backend_default_use_rela_p 1
3833 #define elf_backend_may_use_rela_p 1
3836 #define elf_backend_object_p m32r_elf_object_p
3837 #define elf_backend_final_write_processing m32r_elf_final_write_processing
3838 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
3839 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
3840 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
3841 #define elf_backend_special_sections m32r_elf_special_sections
3842 #define elf_backend_section_flags m32r_elf_section_flags
3844 #define elf_backend_linux_prpsinfo32_ugid16 TRUE
3846 #include "elf32-target.h"
3848 #undef ELF_MAXPAGESIZE
3849 #define ELF_MAXPAGESIZE 0x1000
3851 #undef TARGET_BIG_SYM
3852 #define TARGET_BIG_SYM m32r_elf32_linux_vec
3853 #undef TARGET_BIG_NAME
3854 #define TARGET_BIG_NAME "elf32-m32r-linux"
3855 #undef TARGET_LITTLE_SYM
3856 #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
3857 #undef TARGET_LITTLE_NAME
3858 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
3860 #define elf32_bed elf32_m32r_lin_bed
3862 #include "elf32-target.h"