1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
27 #define NOP_INSN 0x7000
28 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
30 /* Use REL instead of RELA to save space.
31 This only saves space in libraries and object files, but perhaps
32 relocs will be put in ROM? All in all though, REL relocs are a pain
39 /* Use RELA. But use REL to link old objects for backwords compatibility. */
41 /* Functions for the M32R ELF linker. */
43 /* The name of the dynamic interpreter. This is put in the .interp
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
48 /* The nop opcode we use. */
50 #define M32R_NOP 0x7000f000
52 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
54 /* The size in bytes of an entry in the procedure linkage table. */
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
59 /* The first one entries in a procedure linkage table are reserved,
60 and the initial contents are unimportant (we zero them out).
61 Subsequent entries look like this. */
63 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
64 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
65 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
66 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
67 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
69 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
70 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
71 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
72 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
73 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
75 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
76 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
79 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
80 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
81 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
84 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
86 static bfd_reloc_status_type
87 m32r_elf_do_10_pcrel_reloc (bfd
*abfd
,
88 reloc_howto_type
*howto
,
89 asection
*input_section
,
92 asection
*symbol_section ATTRIBUTE_UNUSED
,
96 bfd_signed_vma relocation
;
98 bfd_reloc_status_type status
;
100 /* Sanity check the address (offset in section). */
101 if (offset
> bfd_get_section_limit (abfd
, input_section
))
102 return bfd_reloc_outofrange
;
104 relocation
= symbol_value
+ addend
;
105 /* Make it pc relative. */
106 relocation
-= (input_section
->output_section
->vma
107 + input_section
->output_offset
);
108 /* These jumps mask off the lower two bits of the current address
109 before doing pcrel calculations. */
110 relocation
-= (offset
& -(bfd_vma
) 4);
112 if (relocation
< -0x200 || relocation
> 0x1ff)
113 status
= bfd_reloc_overflow
;
115 status
= bfd_reloc_ok
;
117 x
= bfd_get_16 (abfd
, data
+ offset
);
118 relocation
>>= howto
->rightshift
;
119 relocation
<<= howto
->bitpos
;
120 x
= (x
& ~howto
->dst_mask
) | (((x
& howto
->src_mask
) + relocation
) & howto
->dst_mask
);
121 bfd_put_16 (abfd
, (bfd_vma
) x
, data
+ offset
);
126 /* Handle the R_M32R_10_PCREL reloc. */
128 static bfd_reloc_status_type
129 m32r_elf_10_pcrel_reloc (bfd
* abfd
,
130 arelent
* reloc_entry
,
133 asection
* input_section
,
135 char ** error_message ATTRIBUTE_UNUSED
)
137 /* This part is from bfd_elf_generic_reloc. */
138 if (output_bfd
!= NULL
139 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
140 && (! reloc_entry
->howto
->partial_inplace
141 || reloc_entry
->addend
== 0))
143 reloc_entry
->address
+= input_section
->output_offset
;
147 if (output_bfd
!= NULL
)
148 /* FIXME: See bfd_perform_relocation. Is this right? */
149 return bfd_reloc_continue
;
151 return m32r_elf_do_10_pcrel_reloc (abfd
, reloc_entry
->howto
,
153 data
, reloc_entry
->address
,
156 + symbol
->section
->output_section
->vma
157 + symbol
->section
->output_offset
),
158 reloc_entry
->addend
);
161 /* Do generic partial_inplace relocation.
162 This is a local replacement for bfd_elf_generic_reloc. */
164 static bfd_reloc_status_type
165 m32r_elf_generic_reloc (bfd
*input_bfd
,
166 arelent
*reloc_entry
,
169 asection
*input_section
,
171 char **error_message ATTRIBUTE_UNUSED
)
173 bfd_reloc_status_type ret
;
175 bfd_byte
*inplace_address
;
177 /* This part is from bfd_elf_generic_reloc.
178 If we're relocating, and this an external symbol, we don't want
179 to change anything. */
180 if (output_bfd
!= NULL
181 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
182 && reloc_entry
->addend
== 0)
184 reloc_entry
->address
+= input_section
->output_offset
;
188 /* Now do the reloc in the usual way.
189 ??? It would be nice to call bfd_elf_generic_reloc here,
190 but we have partial_inplace set. bfd_elf_generic_reloc will
191 pass the handling back to bfd_install_relocation which will install
192 a section relative addend which is wrong. */
194 /* Sanity check the address (offset in section). */
195 if (reloc_entry
->address
> bfd_get_section_limit (input_bfd
, input_section
))
196 return bfd_reloc_outofrange
;
199 if (bfd_is_und_section (symbol
->section
)
200 && output_bfd
== NULL
)
201 ret
= bfd_reloc_undefined
;
203 if (bfd_is_com_section (symbol
->section
)
204 || output_bfd
!= NULL
)
207 relocation
= symbol
->value
;
209 /* Only do this for a final link. */
210 if (output_bfd
== NULL
)
212 relocation
+= symbol
->section
->output_section
->vma
;
213 relocation
+= symbol
->section
->output_offset
;
216 relocation
+= reloc_entry
->addend
;
217 inplace_address
= (bfd_byte
*) data
+ reloc_entry
->address
;
220 x = ( (x & ~reloc_entry->howto->dst_mask) | \
221 (((x & reloc_entry->howto->src_mask) + relocation) & \
222 reloc_entry->howto->dst_mask))
224 switch (reloc_entry
->howto
->size
)
228 short x
= bfd_get_16 (input_bfd
, inplace_address
);
230 bfd_put_16 (input_bfd
, (bfd_vma
) x
, inplace_address
);
235 unsigned long x
= bfd_get_32 (input_bfd
, inplace_address
);
237 bfd_put_32 (input_bfd
, (bfd_vma
)x
, inplace_address
);
244 if (output_bfd
!= NULL
)
245 reloc_entry
->address
+= input_section
->output_offset
;
250 /* Handle the R_M32R_SDA16 reloc.
251 This reloc is used to compute the address of objects in the small data area
252 and to perform loads and stores from that area.
253 The lower 16 bits are sign extended and added to the register specified
254 in the instruction, which is assumed to point to _SDA_BASE_. */
256 static bfd_reloc_status_type
257 m32r_elf_sda16_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
258 arelent
*reloc_entry
,
260 void * data ATTRIBUTE_UNUSED
,
261 asection
*input_section
,
263 char **error_message ATTRIBUTE_UNUSED
)
265 /* This part is from bfd_elf_generic_reloc. */
266 if (output_bfd
!= NULL
267 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
268 && (! reloc_entry
->howto
->partial_inplace
269 || reloc_entry
->addend
== 0))
271 reloc_entry
->address
+= input_section
->output_offset
;
275 if (output_bfd
!= NULL
)
276 /* FIXME: See bfd_perform_relocation. Is this right? */
277 return bfd_reloc_continue
;
279 /* FIXME: not sure what to do here yet. But then again, the linker
280 may never call us. */
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286 HI16_SLO is for the add3 and load/store with displacement instructions.
287 HI16_ULO is for the or3 instruction.
288 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290 we must add one to the high 16 bytes (which will get subtracted off when
291 the low 16 bits are added).
292 These relocs have to be done in combination with an R_M32R_LO16 reloc
293 because there is a carry from the LO16 to the HI16. Here we just save
294 the information we need; we do the actual relocation when we see the LO16.
295 This code is copied from the elf32-mips.c. We also support an arbitrary
296 number of HI16 relocs to be associated with a single LO16 reloc. The
297 assembler sorts the relocs to ensure each HI16 immediately precedes its
298 LO16. However if there are multiple copies, the assembler may not find
299 the real LO16 so it picks the first one it finds. */
303 struct m32r_hi16
*next
;
308 /* FIXME: This should not be a static variable. */
310 static struct m32r_hi16
*m32r_hi16_list
;
312 static bfd_reloc_status_type
313 m32r_elf_hi16_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
314 arelent
*reloc_entry
,
317 asection
*input_section
,
319 char **error_message ATTRIBUTE_UNUSED
)
321 bfd_reloc_status_type ret
;
325 /* This part is from bfd_elf_generic_reloc.
326 If we're relocating, and this an external symbol, we don't want
327 to change anything. */
328 if (output_bfd
!= NULL
329 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
330 && reloc_entry
->addend
== 0)
332 reloc_entry
->address
+= input_section
->output_offset
;
336 /* Sanity check the address (offset in section). */
337 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
338 return bfd_reloc_outofrange
;
341 if (bfd_is_und_section (symbol
->section
)
342 && output_bfd
== NULL
)
343 ret
= bfd_reloc_undefined
;
345 if (bfd_is_com_section (symbol
->section
))
348 relocation
= symbol
->value
;
350 relocation
+= symbol
->section
->output_section
->vma
;
351 relocation
+= symbol
->section
->output_offset
;
352 relocation
+= reloc_entry
->addend
;
354 /* Save the information, and let LO16 do the actual relocation. */
355 n
= bfd_malloc ((bfd_size_type
) sizeof *n
);
357 return bfd_reloc_outofrange
;
358 n
->addr
= (bfd_byte
*) data
+ reloc_entry
->address
;
359 n
->addend
= relocation
;
360 n
->next
= m32r_hi16_list
;
363 if (output_bfd
!= NULL
)
364 reloc_entry
->address
+= input_section
->output_offset
;
369 /* Handle an M32R ELF HI16 reloc. */
372 m32r_elf_relocate_hi16 (bfd
*input_bfd
,
374 Elf_Internal_Rela
*relhi
,
375 Elf_Internal_Rela
*rello
,
382 insn
= bfd_get_32 (input_bfd
, contents
+ relhi
->r_offset
);
384 addlo
= bfd_get_32 (input_bfd
, contents
+ rello
->r_offset
);
385 if (type
== R_M32R_HI16_SLO
)
386 addlo
= ((addlo
& 0xffff) ^ 0x8000) - 0x8000;
390 addend
+= ((insn
& 0xffff) << 16) + addlo
;
392 /* Reaccount for sign extension of low part. */
393 if (type
== R_M32R_HI16_SLO
394 && (addend
& 0x8000) != 0)
397 bfd_put_32 (input_bfd
,
398 (insn
& 0xffff0000) | ((addend
>> 16) & 0xffff),
399 contents
+ relhi
->r_offset
);
402 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
403 inplace relocation; this function exists in order to do the
404 R_M32R_HI16_[SU]LO relocation described above. */
406 static bfd_reloc_status_type
407 m32r_elf_lo16_reloc (bfd
*input_bfd
,
408 arelent
*reloc_entry
,
411 asection
*input_section
,
413 char **error_message
)
415 /* This part is from bfd_elf_generic_reloc.
416 If we're relocating, and this an external symbol, we don't want
417 to change anything. */
418 if (output_bfd
!= NULL
419 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
420 && reloc_entry
->addend
== 0)
422 reloc_entry
->address
+= input_section
->output_offset
;
426 if (m32r_hi16_list
!= NULL
)
436 struct m32r_hi16
*next
;
438 /* Do the HI16 relocation. Note that we actually don't need
439 to know anything about the LO16 itself, except where to
440 find the low 16 bits of the addend needed by the LO16. */
441 insn
= bfd_get_32 (input_bfd
, l
->addr
);
442 vallo
= ((bfd_get_32 (input_bfd
, (bfd_byte
*) data
+ reloc_entry
->address
)
443 & 0xffff) ^ 0x8000) - 0x8000;
444 val
= ((insn
& 0xffff) << 16) + vallo
;
447 /* Reaccount for sign extension of low part. */
448 if ((val
& 0x8000) != 0)
451 insn
= (insn
&~ (bfd_vma
) 0xffff) | ((val
>> 16) & 0xffff);
452 bfd_put_32 (input_bfd
, (bfd_vma
) insn
, l
->addr
);
459 m32r_hi16_list
= NULL
;
462 /* Now do the LO16 reloc in the usual way.
463 ??? It would be nice to call bfd_elf_generic_reloc here,
464 but we have partial_inplace set. bfd_elf_generic_reloc will
465 pass the handling back to bfd_install_relocation which will install
466 a section relative addend which is wrong. */
467 return m32r_elf_generic_reloc (input_bfd
, reloc_entry
, symbol
, data
,
468 input_section
, output_bfd
, error_message
);
472 static reloc_howto_type m32r_elf_howto_table
[] =
474 /* This reloc does nothing. */
475 HOWTO (R_M32R_NONE
, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE
, /* pc_relative */
481 complain_overflow_bitfield
, /* complain_on_overflow */
482 bfd_elf_generic_reloc
, /* special_function */
483 "R_M32R_NONE", /* name */
484 FALSE
, /* partial_inplace */
487 FALSE
), /* pcrel_offset */
489 /* A 16 bit absolute relocation. */
490 HOWTO (R_M32R_16
, /* type */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
494 FALSE
, /* pc_relative */
496 complain_overflow_bitfield
, /* complain_on_overflow */
497 m32r_elf_generic_reloc
,/* special_function */
498 "R_M32R_16", /* name */
499 TRUE
, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE
), /* pcrel_offset */
504 /* A 32 bit absolute relocation. */
505 HOWTO (R_M32R_32
, /* type */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
509 FALSE
, /* pc_relative */
511 complain_overflow_bitfield
, /* complain_on_overflow */
512 m32r_elf_generic_reloc
,/* special_function */
513 "R_M32R_32", /* name */
514 TRUE
, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE
), /* pcrel_offset */
519 /* A 24 bit address. */
520 HOWTO (R_M32R_24
, /* type */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
524 FALSE
, /* pc_relative */
526 complain_overflow_unsigned
, /* complain_on_overflow */
527 m32r_elf_generic_reloc
,/* special_function */
528 "R_M32R_24", /* name */
529 TRUE
, /* partial_inplace */
530 0xffffff, /* src_mask */
531 0xffffff, /* dst_mask */
532 FALSE
), /* pcrel_offset */
534 /* An PC Relative 10-bit relocation, shifted by 2.
535 This reloc is complicated because relocations are relative to pc & -4.
536 i.e. branches in the right insn slot use the address of the left insn
538 /* ??? It's not clear whether this should have partial_inplace set or not.
539 Branch relaxing in the assembler can store the addend in the insn,
540 and if bfd_install_relocation gets called the addend may get added
542 HOWTO (R_M32R_10_PCREL
, /* type */
544 1, /* size (0 = byte, 1 = short, 2 = long) */
546 TRUE
, /* pc_relative */
548 complain_overflow_signed
, /* complain_on_overflow */
549 m32r_elf_10_pcrel_reloc
, /* special_function */
550 "R_M32R_10_PCREL", /* name */
551 FALSE
, /* partial_inplace */
554 TRUE
), /* pcrel_offset */
556 /* A relative 18 bit relocation, right shifted by 2. */
557 HOWTO (R_M32R_18_PCREL
, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 TRUE
, /* pc_relative */
563 complain_overflow_signed
, /* complain_on_overflow */
564 bfd_elf_generic_reloc
, /* special_function */
565 "R_M32R_18_PCREL", /* name */
566 FALSE
, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 TRUE
), /* pcrel_offset */
571 /* A relative 26 bit relocation, right shifted by 2. */
572 /* ??? It's not clear whether this should have partial_inplace set or not.
573 Branch relaxing in the assembler can store the addend in the insn,
574 and if bfd_install_relocation gets called the addend may get added
576 HOWTO (R_M32R_26_PCREL
, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 TRUE
, /* pc_relative */
582 complain_overflow_signed
, /* complain_on_overflow */
583 bfd_elf_generic_reloc
, /* special_function */
584 "R_M32R_26_PCREL", /* name */
585 FALSE
, /* partial_inplace */
586 0xffffff, /* src_mask */
587 0xffffff, /* dst_mask */
588 TRUE
), /* pcrel_offset */
590 /* High 16 bits of address when lower 16 is or'd in. */
591 HOWTO (R_M32R_HI16_ULO
, /* type */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE
, /* pc_relative */
597 complain_overflow_dont
, /* complain_on_overflow */
598 m32r_elf_hi16_reloc
, /* special_function */
599 "R_M32R_HI16_ULO", /* name */
600 TRUE
, /* partial_inplace */
601 0x0000ffff, /* src_mask */
602 0x0000ffff, /* dst_mask */
603 FALSE
), /* pcrel_offset */
605 /* High 16 bits of address when lower 16 is added in. */
606 HOWTO (R_M32R_HI16_SLO
, /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 FALSE
, /* pc_relative */
612 complain_overflow_dont
, /* complain_on_overflow */
613 m32r_elf_hi16_reloc
, /* special_function */
614 "R_M32R_HI16_SLO", /* name */
615 TRUE
, /* partial_inplace */
616 0x0000ffff, /* src_mask */
617 0x0000ffff, /* dst_mask */
618 FALSE
), /* pcrel_offset */
620 /* Lower 16 bits of address. */
621 HOWTO (R_M32R_LO16
, /* type */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
625 FALSE
, /* pc_relative */
627 complain_overflow_dont
, /* complain_on_overflow */
628 m32r_elf_lo16_reloc
, /* special_function */
629 "R_M32R_LO16", /* name */
630 TRUE
, /* partial_inplace */
631 0x0000ffff, /* src_mask */
632 0x0000ffff, /* dst_mask */
633 FALSE
), /* pcrel_offset */
635 /* Small data area 16 bits offset. */
636 HOWTO (R_M32R_SDA16
, /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE
, /* pc_relative */
642 complain_overflow_signed
, /* complain_on_overflow */
643 m32r_elf_sda16_reloc
, /* special_function */
644 "R_M32R_SDA16", /* name */
645 TRUE
, /* partial_inplace */ /* FIXME: correct? */
646 0x0000ffff, /* src_mask */
647 0x0000ffff, /* dst_mask */
648 FALSE
), /* pcrel_offset */
650 /* GNU extension to record C++ vtable hierarchy. */
651 HOWTO (R_M32R_GNU_VTINHERIT
, /* type */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE
, /* pc_relative */
657 complain_overflow_dont
, /* complain_on_overflow */
658 NULL
, /* special_function */
659 "R_M32R_GNU_VTINHERIT", /* name */
660 FALSE
, /* partial_inplace */
663 FALSE
), /* pcrel_offset */
665 /* GNU extension to record C++ vtable member usage. */
666 HOWTO (R_M32R_GNU_VTENTRY
, /* type */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE
, /* pc_relative */
672 complain_overflow_dont
, /* complain_on_overflow */
673 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
674 "R_M32R_GNU_VTENTRY", /* name */
675 FALSE
, /* partial_inplace */
678 FALSE
), /* pcrel_offset */
701 /* A 16 bit absolute relocation. */
702 HOWTO (R_M32R_16_RELA
, /* type */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE
, /* pc_relative */
708 complain_overflow_bitfield
, /* complain_on_overflow */
709 bfd_elf_generic_reloc
, /* special_function */
710 "R_M32R_16_RELA", /* name */
711 FALSE
, /* partial_inplace */
712 0xffff, /* src_mask */
713 0xffff, /* dst_mask */
714 FALSE
), /* pcrel_offset */
716 /* A 32 bit absolute relocation. */
717 HOWTO (R_M32R_32_RELA
, /* type */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
721 FALSE
, /* pc_relative */
723 complain_overflow_bitfield
, /* complain_on_overflow */
724 bfd_elf_generic_reloc
,/* special_function */
725 "R_M32R_32_RELA", /* name */
726 FALSE
, /* partial_inplace */
727 0xffffffff, /* src_mask */
728 0xffffffff, /* dst_mask */
729 FALSE
), /* pcrel_offset */
731 /* A 24 bit address. */
732 HOWTO (R_M32R_24_RELA
, /* type */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
736 FALSE
, /* pc_relative */
738 complain_overflow_unsigned
, /* complain_on_overflow */
739 bfd_elf_generic_reloc
,/* special_function */
740 "R_M32R_24_RELA", /* name */
741 FALSE
, /* partial_inplace */
742 0xffffff, /* src_mask */
743 0xffffff, /* dst_mask */
744 FALSE
), /* pcrel_offset */
746 HOWTO (R_M32R_10_PCREL_RELA
, /* type */
748 1, /* size (0 = byte, 1 = short, 2 = long) */
750 TRUE
, /* pc_relative */
752 complain_overflow_signed
, /* complain_on_overflow */
753 m32r_elf_10_pcrel_reloc
, /* special_function */
754 "R_M32R_10_PCREL_RELA",/* name */
755 FALSE
, /* partial_inplace */
758 TRUE
), /* pcrel_offset */
760 /* A relative 18 bit relocation, right shifted by 2. */
761 HOWTO (R_M32R_18_PCREL_RELA
, /* type */
763 2, /* size (0 = byte, 1 = short, 2 = long) */
765 TRUE
, /* pc_relative */
767 complain_overflow_signed
, /* complain_on_overflow */
768 bfd_elf_generic_reloc
, /* special_function */
769 "R_M32R_18_PCREL_RELA",/* name */
770 FALSE
, /* partial_inplace */
771 0xffff, /* src_mask */
772 0xffff, /* dst_mask */
773 TRUE
), /* pcrel_offset */
775 /* A relative 26 bit relocation, right shifted by 2. */
776 HOWTO (R_M32R_26_PCREL_RELA
, /* type */
778 2, /* size (0 = byte, 1 = short, 2 = long) */
780 TRUE
, /* pc_relative */
782 complain_overflow_signed
, /* complain_on_overflow */
783 bfd_elf_generic_reloc
, /* special_function */
784 "R_M32R_26_PCREL_RELA",/* name */
785 FALSE
, /* partial_inplace */
786 0xffffff, /* src_mask */
787 0xffffff, /* dst_mask */
788 TRUE
), /* pcrel_offset */
790 /* High 16 bits of address when lower 16 is or'd in. */
791 HOWTO (R_M32R_HI16_ULO_RELA
, /* type */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_dont
, /* complain_on_overflow */
798 bfd_elf_generic_reloc
, /* special_function */
799 "R_M32R_HI16_ULO_RELA",/* name */
800 FALSE
, /* partial_inplace */
801 0x0000ffff, /* src_mask */
802 0x0000ffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* High 16 bits of address when lower 16 is added in. */
806 HOWTO (R_M32R_HI16_SLO_RELA
, /* type */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE
, /* pc_relative */
812 complain_overflow_dont
, /* complain_on_overflow */
813 bfd_elf_generic_reloc
, /* special_function */
814 "R_M32R_HI16_SLO_RELA",/* name */
815 FALSE
, /* partial_inplace */
816 0x0000ffff, /* src_mask */
817 0x0000ffff, /* dst_mask */
818 FALSE
), /* pcrel_offset */
820 /* Lower 16 bits of address. */
821 HOWTO (R_M32R_LO16_RELA
, /* type */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE
, /* pc_relative */
827 complain_overflow_dont
, /* complain_on_overflow */
828 bfd_elf_generic_reloc
, /* special_function */
829 "R_M32R_LO16_RELA", /* name */
830 FALSE
, /* partial_inplace */
831 0x0000ffff, /* src_mask */
832 0x0000ffff, /* dst_mask */
833 FALSE
), /* pcrel_offset */
835 /* Small data area 16 bits offset. */
836 HOWTO (R_M32R_SDA16_RELA
, /* type */
838 2, /* size (0 = byte, 1 = short, 2 = long) */
840 FALSE
, /* pc_relative */
842 complain_overflow_signed
, /* complain_on_overflow */
843 bfd_elf_generic_reloc
, /* special_function */
844 "R_M32R_SDA16_RELA", /* name */
845 TRUE
, /* partial_inplace */ /* FIXME: correct? */
846 0x0000ffff, /* src_mask */
847 0x0000ffff, /* dst_mask */
848 FALSE
), /* pcrel_offset */
850 /* GNU extension to record C++ vtable hierarchy. */
851 HOWTO (R_M32R_RELA_GNU_VTINHERIT
, /* type */
853 2, /* size (0 = byte, 1 = short, 2 = long) */
855 FALSE
, /* pc_relative */
857 complain_overflow_dont
, /* complain_on_overflow */
858 NULL
, /* special_function */
859 "R_M32R_RELA_GNU_VTINHERIT", /* name */
860 FALSE
, /* partial_inplace */
863 FALSE
), /* pcrel_offset */
865 /* GNU extension to record C++ vtable member usage. */
866 HOWTO (R_M32R_RELA_GNU_VTENTRY
, /* type */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
870 FALSE
, /* pc_relative */
872 complain_overflow_dont
, /* complain_on_overflow */
873 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
874 "R_M32R_RELA_GNU_VTENTRY", /* name */
875 FALSE
, /* partial_inplace */
878 FALSE
), /* pcrel_offset */
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 BFD_ASSERT (ELF32_R_TYPE(dst
->r_info
) <= (unsigned int) R_M32R_GNU_VTENTRY
);
1284 cache_ptr
->howto
= &m32r_elf_howto_table
[r_type
];
1288 m32r_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1290 Elf_Internal_Rela
*dst
)
1292 BFD_ASSERT ((ELF32_R_TYPE(dst
->r_info
) == (unsigned int) R_M32R_NONE
)
1293 || ((ELF32_R_TYPE(dst
->r_info
) > (unsigned int) R_M32R_GNU_VTENTRY
)
1294 && (ELF32_R_TYPE(dst
->r_info
) < (unsigned int) R_M32R_max
)));
1295 cache_ptr
->howto
= &m32r_elf_howto_table
[ELF32_R_TYPE(dst
->r_info
)];
1299 /* Given a BFD section, try to locate the corresponding ELF section
1303 _bfd_m32r_elf_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
1307 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
1309 *retval
= SHN_M32R_SCOMMON
;
1315 /* M32R ELF uses two common sections. One is the usual one, and the other
1316 is for small objects. All the small objects are kept together, and then
1317 referenced via one register, which yields faster assembler code. It is
1318 up to the compiler to emit an instruction to load the register with
1319 _SDA_BASE. This is what we use for the small common section. This
1320 approach is copied from elf32-mips.c. */
1321 static asection m32r_elf_scom_section
;
1322 static asymbol m32r_elf_scom_symbol
;
1323 static asymbol
*m32r_elf_scom_symbol_ptr
;
1325 /* Handle the special M32R section numbers that a symbol may use. */
1328 _bfd_m32r_elf_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
1330 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
1332 switch (elfsym
->internal_elf_sym
.st_shndx
)
1334 case SHN_M32R_SCOMMON
:
1335 if (m32r_elf_scom_section
.name
== NULL
)
1337 /* Initialize the small common section. */
1338 m32r_elf_scom_section
.name
= ".scommon";
1339 m32r_elf_scom_section
.flags
= SEC_IS_COMMON
;
1340 m32r_elf_scom_section
.output_section
= &m32r_elf_scom_section
;
1341 m32r_elf_scom_section
.symbol
= &m32r_elf_scom_symbol
;
1342 m32r_elf_scom_section
.symbol_ptr_ptr
= &m32r_elf_scom_symbol_ptr
;
1343 m32r_elf_scom_symbol
.name
= ".scommon";
1344 m32r_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
1345 m32r_elf_scom_symbol
.section
= &m32r_elf_scom_section
;
1346 m32r_elf_scom_symbol_ptr
= &m32r_elf_scom_symbol
;
1348 asym
->section
= &m32r_elf_scom_section
;
1349 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
1354 /* Hook called by the linker routine which adds symbols from an object
1355 file. We must handle the special M32R section numbers here.
1356 We also keep watching for whether we need to create the sdata special
1360 m32r_elf_add_symbol_hook (bfd
*abfd
,
1361 struct bfd_link_info
*info
,
1362 Elf_Internal_Sym
*sym
,
1364 flagword
*flagsp ATTRIBUTE_UNUSED
,
1368 if (! info
->relocatable
1369 && (*namep
)[0] == '_' && (*namep
)[1] == 'S'
1370 && strcmp (*namep
, "_SDA_BASE_") == 0
1371 && is_elf_hash_table (info
->hash
))
1373 /* This is simpler than using _bfd_elf_create_linker_section
1374 (our needs are simpler than ppc's needs). Also
1375 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1376 section already exists a new one is created that follows it which
1377 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1378 struct elf_link_hash_entry
*h
;
1379 struct bfd_link_hash_entry
*bh
;
1380 asection
*s
= bfd_get_section_by_name (abfd
, ".sdata");
1382 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1385 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1386 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1388 s
= bfd_make_section_anyway_with_flags (abfd
, ".sdata",
1392 bfd_set_section_alignment (abfd
, s
, 2);
1395 bh
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_",
1396 FALSE
, FALSE
, FALSE
);
1398 if ((bh
== NULL
|| bh
->type
== bfd_link_hash_undefined
)
1399 && !(_bfd_generic_link_add_one_symbol (info
,
1407 get_elf_backend_data (abfd
)->collect
,
1410 h
= (struct elf_link_hash_entry
*) bh
;
1411 h
->type
= STT_OBJECT
;
1414 switch (sym
->st_shndx
)
1416 case SHN_M32R_SCOMMON
:
1417 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
1418 (*secp
)->flags
|= SEC_IS_COMMON
;
1419 *valp
= sym
->st_size
;
1426 /* We have to figure out the SDA_BASE value, so that we can adjust the
1427 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1428 BFD. If we can't find it, we're stuck. We cache it in the ELF
1429 target data. We don't need to adjust the symbol value for an
1430 external symbol if we are producing relocatable output. */
1432 static bfd_reloc_status_type
1433 m32r_elf_final_sda_base (bfd
*output_bfd
,
1434 struct bfd_link_info
*info
,
1435 const char **error_message
,
1438 if (elf_gp (output_bfd
) == 0)
1440 struct bfd_link_hash_entry
*h
;
1442 h
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_", FALSE
, FALSE
, TRUE
);
1443 if (h
!= NULL
&& h
->type
== bfd_link_hash_defined
)
1444 elf_gp (output_bfd
) = (h
->u
.def
.value
1445 + h
->u
.def
.section
->output_section
->vma
1446 + h
->u
.def
.section
->output_offset
);
1449 /* Only get the error once. */
1450 *psb
= elf_gp (output_bfd
) = 4;
1452 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1453 return bfd_reloc_dangerous
;
1456 *psb
= elf_gp (output_bfd
);
1457 return bfd_reloc_ok
;
1460 /* Return size of a PLT entry. */
1461 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1463 /* The m32r linker needs to keep track of the number of relocs that it
1464 decides to copy in check_relocs for each symbol. This is so that
1465 it can discard PC relative relocs if it doesn't need them when
1466 linking with -Bsymbolic. We store the information in a field
1467 extending the regular ELF linker hash table. */
1469 /* This structure keeps track of the number of PC relative relocs we
1470 have copied for a given symbol. */
1472 struct elf_m32r_pcrel_relocs_copied
1475 struct elf_m32r_pcrel_relocs_copied
*next
;
1476 /* A section in dynobj. */
1478 /* Number of relocs copied in this section. */
1479 bfd_size_type count
;
1482 /* The sh linker needs to keep track of the number of relocs that it
1483 decides to copy as dynamic relocs in check_relocs for each symbol.
1484 This is so that it can later discard them if they are found to be
1485 unnecessary. We store the information in a field extending the
1486 regular ELF linker hash table. */
1488 struct elf_m32r_dyn_relocs
1490 struct elf_m32r_dyn_relocs
*next
;
1492 /* The input section of the reloc. */
1495 /* Total number of relocs copied for the input section. */
1496 bfd_size_type count
;
1498 /* Number of pc-relative relocs copied for the input section. */
1499 bfd_size_type pc_count
;
1503 /* m32r ELF linker hash entry. */
1505 struct elf_m32r_link_hash_entry
1507 struct elf_link_hash_entry root
;
1509 /* Track dynamic relocs copied for this symbol. */
1510 struct elf_m32r_dyn_relocs
*dyn_relocs
;
1513 /* m32r ELF linker hash table. */
1515 struct elf_m32r_link_hash_table
1517 struct elf_link_hash_table root
;
1519 /* Short-cuts to get to dynamic linker sections. */
1528 /* Small local sym to section mapping cache. */
1529 struct sym_sec_cache sym_sec
;
1532 /* Traverse an m32r ELF linker hash table. */
1534 #define m32r_elf_link_hash_traverse(table, func, info) \
1535 (elf_link_hash_traverse \
1537 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1540 /* Get the m32r ELF linker hash table from a link_info structure. */
1543 #define m32r_elf_hash_table(p) \
1544 ((struct elf_m32r_link_hash_table *) ((p)->hash))
1546 /* Create an entry in an m32r ELF linker hash table. */
1548 static struct bfd_hash_entry
*
1549 m32r_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1550 struct bfd_hash_table
*table
,
1553 struct elf_m32r_link_hash_entry
*ret
=
1554 (struct elf_m32r_link_hash_entry
*) entry
;
1556 /* Allocate the structure if it has not already been allocated by a
1559 ret
= bfd_hash_allocate (table
,
1560 sizeof (struct elf_m32r_link_hash_entry
));
1564 /* Call the allocation method of the superclass. */
1565 ret
= ((struct elf_m32r_link_hash_entry
*)
1566 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1570 struct elf_m32r_link_hash_entry
*eh
;
1572 eh
= (struct elf_m32r_link_hash_entry
*) ret
;
1573 eh
->dyn_relocs
= NULL
;
1576 return (struct bfd_hash_entry
*) ret
;
1579 /* Create an m32r ELF linker hash table. */
1581 static struct bfd_link_hash_table
*
1582 m32r_elf_link_hash_table_create (bfd
*abfd
)
1584 struct elf_m32r_link_hash_table
*ret
;
1585 bfd_size_type amt
= sizeof (struct elf_m32r_link_hash_table
);
1587 ret
= bfd_malloc (amt
);
1591 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1592 m32r_elf_link_hash_newfunc
,
1593 sizeof (struct elf_m32r_link_hash_entry
)))
1600 ret
->sgotplt
= NULL
;
1601 ret
->srelgot
= NULL
;
1603 ret
->srelplt
= NULL
;
1604 ret
->sdynbss
= NULL
;
1605 ret
->srelbss
= NULL
;
1606 ret
->sym_sec
.abfd
= NULL
;
1608 return &ret
->root
.root
;
1611 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1612 shortcuts to them in our hash table. */
1615 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
1617 struct elf_m32r_link_hash_table
*htab
;
1619 if (! _bfd_elf_create_got_section (dynobj
, info
))
1622 htab
= m32r_elf_hash_table (info
);
1623 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
1624 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
1625 if (! htab
->sgot
|| ! htab
->sgotplt
)
1628 htab
->srelgot
= bfd_make_section_with_flags (dynobj
, ".rela.got",
1633 | SEC_LINKER_CREATED
1635 if (htab
->srelgot
== NULL
1636 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
1642 /* Create dynamic sections when linking against a dynamic object. */
1645 m32r_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
1647 struct elf_m32r_link_hash_table
*htab
;
1648 flagword flags
, pltflags
;
1650 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1651 int ptralign
= 2; /* 32bit */
1653 htab
= m32r_elf_hash_table (info
);
1655 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1656 .rel[a].bss sections. */
1657 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
1658 | SEC_LINKER_CREATED
);
1661 pltflags
|= SEC_CODE
;
1662 if (bed
->plt_not_loaded
)
1663 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
1664 if (bed
->plt_readonly
)
1665 pltflags
|= SEC_READONLY
;
1667 s
= bfd_make_section_with_flags (abfd
, ".plt", pltflags
);
1670 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
1673 if (bed
->want_plt_sym
)
1675 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1677 struct bfd_link_hash_entry
*bh
= NULL
;
1678 struct elf_link_hash_entry
*h
;
1680 if (! (_bfd_generic_link_add_one_symbol
1681 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
1682 (bfd_vma
) 0, NULL
, FALSE
,
1683 get_elf_backend_data (abfd
)->collect
, &bh
)))
1685 h
= (struct elf_link_hash_entry
*) bh
;
1687 h
->type
= STT_OBJECT
;
1688 htab
->root
.hplt
= h
;
1691 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
1695 s
= bfd_make_section_with_flags (abfd
,
1696 bed
->default_use_rela_p
? ".rela.plt" : ".rel.plt",
1697 flags
| SEC_READONLY
);
1700 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1703 if (htab
->sgot
== NULL
1704 && ! create_got_section (abfd
, info
))
1708 const char *secname
;
1713 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1715 secflags
= bfd_get_section_flags (abfd
, sec
);
1716 if ((secflags
& (SEC_DATA
| SEC_LINKER_CREATED
))
1717 || ((secflags
& SEC_HAS_CONTENTS
) != SEC_HAS_CONTENTS
))
1719 secname
= bfd_get_section_name (abfd
, sec
);
1720 relname
= bfd_malloc ((bfd_size_type
) strlen (secname
) + 6);
1721 strcpy (relname
, ".rela");
1722 strcat (relname
, secname
);
1723 if (bfd_get_section_by_name (abfd
, secname
))
1725 s
= bfd_make_section_with_flags (abfd
, relname
,
1726 flags
| SEC_READONLY
);
1728 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1733 if (bed
->want_dynbss
)
1735 /* The .dynbss section is a place to put symbols which are defined
1736 by dynamic objects, are referenced by regular objects, and are
1737 not functions. We must allocate space for them in the process
1738 image and use a R_*_COPY reloc to tell the dynamic linker to
1739 initialize them at run time. The linker script puts the .dynbss
1740 section into the .bss section of the final image. */
1741 s
= bfd_make_section_with_flags (abfd
, ".dynbss",
1742 SEC_ALLOC
| SEC_LINKER_CREATED
);
1746 /* The .rel[a].bss section holds copy relocs. This section is not
1747 normally needed. We need to create it here, though, so that the
1748 linker will map it to an output section. We can't just create it
1749 only if we need it, because we will not know whether we need it
1750 until we have seen all the input files, and the first time the
1751 main linker code calls BFD after examining all the input files
1752 (size_dynamic_sections) the input sections have already been
1753 mapped to the output sections. If the section turns out not to
1754 be needed, we can discard it later. We will never need this
1755 section when generating a shared object, since they do not use
1759 s
= bfd_make_section_with_flags (abfd
,
1760 (bed
->default_use_rela_p
1761 ? ".rela.bss" : ".rel.bss"),
1762 flags
| SEC_READONLY
);
1765 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1773 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1776 m32r_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
1777 struct elf_link_hash_entry
*dir
,
1778 struct elf_link_hash_entry
*ind
)
1780 struct elf_m32r_link_hash_entry
* edir
;
1781 struct elf_m32r_link_hash_entry
* eind
;
1783 edir
= (struct elf_m32r_link_hash_entry
*) dir
;
1784 eind
= (struct elf_m32r_link_hash_entry
*) ind
;
1786 if (eind
->dyn_relocs
!= NULL
)
1788 if (edir
->dyn_relocs
!= NULL
)
1790 struct elf_m32r_dyn_relocs
**pp
;
1791 struct elf_m32r_dyn_relocs
*p
;
1793 /* Add reloc counts against the indirect sym to the direct sym
1794 list. Merge any entries against the same section. */
1795 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
1797 struct elf_m32r_dyn_relocs
*q
;
1799 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
1800 if (q
->sec
== p
->sec
)
1802 q
->pc_count
+= p
->pc_count
;
1803 q
->count
+= p
->count
;
1810 *pp
= edir
->dyn_relocs
;
1813 edir
->dyn_relocs
= eind
->dyn_relocs
;
1814 eind
->dyn_relocs
= NULL
;
1817 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
1821 /* Adjust a symbol defined by a dynamic object and referenced by a
1822 regular object. The current definition is in some section of the
1823 dynamic object, but we're not including those sections. We have to
1824 change the definition to something the rest of the link can
1828 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1829 struct elf_link_hash_entry
*h
)
1831 struct elf_m32r_link_hash_table
*htab
;
1832 struct elf_m32r_link_hash_entry
*eh
;
1833 struct elf_m32r_dyn_relocs
*p
;
1838 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1841 dynobj
= elf_hash_table (info
)->dynobj
;
1843 /* Make sure we know what is going on here. */
1844 BFD_ASSERT (dynobj
!= NULL
1846 || h
->u
.weakdef
!= NULL
1849 && !h
->def_regular
)));
1851 /* If this is a function, put it in the procedure linkage table. We
1852 will fill in the contents of the procedure linkage table later,
1853 when we know the address of the .got section. */
1854 if (h
->type
== STT_FUNC
1860 && h
->root
.type
!= bfd_link_hash_undefweak
1861 && h
->root
.type
!= bfd_link_hash_undefined
)
1863 /* This case can occur if we saw a PLT reloc in an input
1864 file, but the symbol was never referred to by a dynamic
1865 object. In such a case, we don't actually need to build
1866 a procedure linkage table, and we can just do a PCREL
1868 h
->plt
.offset
= (bfd_vma
) -1;
1875 h
->plt
.offset
= (bfd_vma
) -1;
1877 /* If this is a weak symbol, and there is a real definition, the
1878 processor independent code will have arranged for us to see the
1879 real definition first, and we can just use the same value. */
1880 if (h
->u
.weakdef
!= NULL
)
1882 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1883 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1884 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1885 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1889 /* This is a reference to a symbol defined by a dynamic object which
1890 is not a function. */
1892 /* If we are creating a shared library, we must presume that the
1893 only references to the symbol are via the global offset table.
1894 For such cases we need not do anything here; the relocations will
1895 be handled correctly by relocate_section. */
1899 /* If there are no references to this symbol that do not use the
1900 GOT, we don't need to generate a copy reloc. */
1901 if (!h
->non_got_ref
)
1904 /* If -z nocopyreloc was given, we won't generate them either. */
1905 if (info
->nocopyreloc
)
1911 eh
= (struct elf_m32r_link_hash_entry
*) h
;
1912 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1914 s
= p
->sec
->output_section
;
1915 if (s
!= NULL
&& (s
->flags
& (SEC_READONLY
| SEC_HAS_CONTENTS
)) != 0)
1919 /* If we didn't find any dynamic relocs in sections which needs the
1920 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1930 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
1931 h
->root
.root
.string
);
1935 /* We must allocate the symbol in our .dynbss section, which will
1936 become part of the .bss section of the executable. There will be
1937 an entry for this symbol in the .dynsym section. The dynamic
1938 object will contain position independent code, so all references
1939 from the dynamic object to this symbol will go through the global
1940 offset table. The dynamic linker will use the .dynsym entry to
1941 determine the address it must put in the global offset table, so
1942 both the dynamic object and the regular object will refer to the
1943 same memory location for the variable. */
1945 htab
= m32r_elf_hash_table (info
);
1947 BFD_ASSERT (s
!= NULL
);
1949 /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1950 to copy the initial value out of the dynamic object and into the
1951 runtime process image. We need to remember the offset into the
1952 .rela.bss section we are going to use. */
1953 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1957 srel
= htab
->srelbss
;
1958 BFD_ASSERT (srel
!= NULL
);
1959 srel
->size
+= sizeof (Elf32_External_Rela
);
1963 return _bfd_elf_adjust_dynamic_copy (h
, s
);
1966 /* Allocate space in .plt, .got and associated reloc sections for
1970 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1972 struct bfd_link_info
*info
;
1973 struct elf_m32r_link_hash_table
*htab
;
1974 struct elf_m32r_link_hash_entry
*eh
;
1975 struct elf_m32r_dyn_relocs
*p
;
1977 if (h
->root
.type
== bfd_link_hash_indirect
)
1980 if (h
->root
.type
== bfd_link_hash_warning
)
1981 /* When warning symbols are created, they **replace** the "real"
1982 entry in the hash table, thus we never get to see the real
1983 symbol in a hash traversal. So look at it now. */
1984 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1986 info
= (struct bfd_link_info
*) inf
;
1987 htab
= m32r_elf_hash_table (info
);
1989 eh
= (struct elf_m32r_link_hash_entry
*) h
;
1991 if (htab
->root
.dynamic_sections_created
1992 && h
->plt
.refcount
> 0)
1994 /* Make sure this symbol is output as a dynamic symbol.
1995 Undefined weak syms won't yet be marked as dynamic. */
1996 if (h
->dynindx
== -1
1997 && !h
->forced_local
)
1999 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2003 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
2005 asection
*s
= htab
->splt
;
2007 /* If this is the first .plt entry, make room for the special
2010 s
->size
+= PLT_ENTRY_SIZE
;
2012 h
->plt
.offset
= s
->size
;
2014 /* If this symbol is not defined in a regular file, and we are
2015 not generating a shared library, then set the symbol to this
2016 location in the .plt. This is required to make function
2017 pointers compare as equal between the normal executable and
2018 the shared library. */
2022 h
->root
.u
.def
.section
= s
;
2023 h
->root
.u
.def
.value
= h
->plt
.offset
;
2026 /* Make room for this entry. */
2027 s
->size
+= PLT_ENTRY_SIZE
;
2029 /* We also need to make an entry in the .got.plt section, which
2030 will be placed in the .got section by the linker script. */
2031 htab
->sgotplt
->size
+= 4;
2033 /* We also need to make an entry in the .rel.plt section. */
2034 htab
->srelplt
->size
+= sizeof (Elf32_External_Rela
);
2038 h
->plt
.offset
= (bfd_vma
) -1;
2044 h
->plt
.offset
= (bfd_vma
) -1;
2048 if (h
->got
.refcount
> 0)
2053 /* Make sure this symbol is output as a dynamic symbol.
2054 Undefined weak syms won't yet be marked as dynamic. */
2055 if (h
->dynindx
== -1
2056 && !h
->forced_local
)
2058 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2064 h
->got
.offset
= s
->size
;
2066 dyn
= htab
->root
.dynamic_sections_created
;
2067 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
))
2068 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
2071 h
->got
.offset
= (bfd_vma
) -1;
2073 if (eh
->dyn_relocs
== NULL
)
2076 /* In the shared -Bsymbolic case, discard space allocated for
2077 dynamic pc-relative relocs against symbols which turn out to be
2078 defined in regular objects. For the normal shared case, discard
2079 space for pc-relative relocs that have become local due to symbol
2080 visibility changes. */
2088 struct elf_m32r_dyn_relocs
**pp
;
2090 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2092 p
->count
-= p
->pc_count
;
2101 /* Also discard relocs on undefined weak syms with non-default
2103 if (eh
->dyn_relocs
!= NULL
2104 && h
->root
.type
== bfd_link_hash_undefweak
)
2106 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2107 eh
->dyn_relocs
= NULL
;
2109 /* Make sure undefined weak symbols are output as a dynamic
2111 else if (h
->dynindx
== -1
2112 && !h
->forced_local
)
2114 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2121 /* For the non-shared case, discard space for relocs against
2122 symbols which turn out to need copy relocs or are not
2128 || (htab
->root
.dynamic_sections_created
2129 && (h
->root
.type
== bfd_link_hash_undefweak
2130 || h
->root
.type
== bfd_link_hash_undefined
))))
2132 /* Make sure this symbol is output as a dynamic symbol.
2133 Undefined weak syms won't yet be marked as dynamic. */
2134 if (h
->dynindx
== -1
2135 && !h
->forced_local
)
2137 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2141 /* If that succeeded, we know we'll be keeping all the
2143 if (h
->dynindx
!= -1)
2147 eh
->dyn_relocs
= NULL
;
2152 /* Finally, allocate space. */
2153 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2155 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2156 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2162 /* Find any dynamic relocs that apply to read-only sections. */
2165 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2167 struct elf_m32r_link_hash_entry
*eh
;
2168 struct elf_m32r_dyn_relocs
*p
;
2170 if (h
->root
.type
== bfd_link_hash_warning
)
2171 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2173 eh
= (struct elf_m32r_link_hash_entry
*) h
;
2174 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2176 asection
*s
= p
->sec
->output_section
;
2178 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2180 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2182 info
->flags
|= DF_TEXTREL
;
2184 /* Not an error, just cut short the traversal. */
2191 /* Set the sizes of the dynamic sections. */
2194 m32r_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2195 struct bfd_link_info
*info
)
2197 struct elf_m32r_link_hash_table
*htab
;
2204 printf ("m32r_elf_size_dynamic_sections()\n");
2207 htab
= m32r_elf_hash_table (info
);
2208 dynobj
= htab
->root
.dynobj
;
2209 BFD_ASSERT (dynobj
!= NULL
);
2211 if (htab
->root
.dynamic_sections_created
)
2213 /* Set the contents of the .interp section to the interpreter. */
2214 if (info
->executable
)
2216 s
= bfd_get_section_by_name (dynobj
, ".interp");
2217 BFD_ASSERT (s
!= NULL
);
2218 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2219 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2223 /* Set up .got offsets for local syms, and space for local dynamic
2225 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2227 bfd_signed_vma
*local_got
;
2228 bfd_signed_vma
*end_local_got
;
2229 bfd_size_type locsymcount
;
2230 Elf_Internal_Shdr
*symtab_hdr
;
2233 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2236 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2238 struct elf_m32r_dyn_relocs
*p
;
2240 for (p
= ((struct elf_m32r_dyn_relocs
*)
2241 elf_section_data (s
)->local_dynrel
);
2245 if (! bfd_is_abs_section (p
->sec
)
2246 && bfd_is_abs_section (p
->sec
->output_section
))
2248 /* Input section has been discarded, either because
2249 it is a copy of a linkonce section or due to
2250 linker script /DISCARD/, so we'll be discarding
2253 else if (p
->count
!= 0)
2255 srel
= elf_section_data (p
->sec
)->sreloc
;
2256 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2257 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2258 info
->flags
|= DF_TEXTREL
;
2263 local_got
= elf_local_got_refcounts (ibfd
);
2267 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2268 locsymcount
= symtab_hdr
->sh_info
;
2269 end_local_got
= local_got
+ locsymcount
;
2271 srel
= htab
->srelgot
;
2272 for (; local_got
< end_local_got
; ++local_got
)
2276 *local_got
= s
->size
;
2279 srel
->size
+= sizeof (Elf32_External_Rela
);
2282 *local_got
= (bfd_vma
) -1;
2286 /* Allocate global sym .plt and .got entries, and space for global
2287 sym dynamic relocs. */
2288 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2290 /* We now have determined the sizes of the various dynamic sections.
2291 Allocate memory for them. */
2293 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2295 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2300 || s
== htab
->sgotplt
2301 || s
== htab
->sdynbss
)
2303 /* Strip this section if we don't need it; see the
2306 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2308 if (s
->size
!= 0 && s
!= htab
->srelplt
)
2311 /* We use the reloc_count field as a counter if we need
2312 to copy relocs into the output file. */
2316 /* It's not one of our sections, so don't allocate space. */
2321 /* If we don't need this section, strip it from the
2322 output file. This is mostly to handle .rela.bss and
2323 .rela.plt. We must create both sections in
2324 create_dynamic_sections, because they must be created
2325 before the linker maps input sections to output
2326 sections. The linker does that before
2327 adjust_dynamic_symbol is called, and it is that
2328 function which decides whether anything needs to go
2329 into these sections. */
2330 s
->flags
|= SEC_EXCLUDE
;
2334 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2337 /* Allocate memory for the section contents. We use bfd_zalloc
2338 here in case unused entries are not reclaimed before the
2339 section's contents are written out. This should not happen,
2340 but this way if it does, we get a R_M32R_NONE reloc instead
2342 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2343 if (s
->contents
== NULL
)
2347 if (htab
->root
.dynamic_sections_created
)
2349 /* Add some entries to the .dynamic section. We fill in the
2350 values later, in m32r_elf_finish_dynamic_sections, but we
2351 must add the entries now so that we get the correct size for
2352 the .dynamic section. The DT_DEBUG entry is filled in by the
2353 dynamic linker and used by the debugger. */
2354 #define add_dynamic_entry(TAG, VAL) \
2355 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2357 if (info
->executable
)
2359 if (! add_dynamic_entry (DT_DEBUG
, 0))
2363 if (htab
->splt
->size
!= 0)
2365 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2366 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2367 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2368 || ! add_dynamic_entry (DT_JMPREL
, 0))
2374 if (! add_dynamic_entry (DT_RELA
, 0)
2375 || ! add_dynamic_entry (DT_RELASZ
, 0)
2376 || ! add_dynamic_entry (DT_RELAENT
,
2377 sizeof (Elf32_External_Rela
)))
2380 /* If any dynamic relocs apply to a read-only section,
2381 then we need a DT_TEXTREL entry. */
2382 if ((info
->flags
& DF_TEXTREL
) == 0)
2383 elf_link_hash_traverse (&htab
->root
, readonly_dynrelocs
,
2386 if ((info
->flags
& DF_TEXTREL
) != 0)
2388 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2393 #undef add_dynamic_entry
2398 /* Relocate an M32R/D ELF section.
2399 There is some attempt to make this function usable for many architectures,
2400 both for RELA and REL type relocs, if only to serve as a learning tool.
2402 The RELOCATE_SECTION function is called by the new ELF backend linker
2403 to handle the relocations for a section.
2405 The relocs are always passed as Rela structures; if the section
2406 actually uses Rel structures, the r_addend field will always be
2409 This function is responsible for adjust the section contents as
2410 necessary, and (if using Rela relocs and generating a
2411 relocatable output file) adjusting the reloc addend as
2414 This function does not have to worry about setting the reloc
2415 address or the reloc symbol index.
2417 LOCAL_SYMS is a pointer to the swapped in local symbols.
2419 LOCAL_SECTIONS is an array giving the section in the input file
2420 corresponding to the st_shndx field of each local symbol.
2422 The global hash table entry for the global symbols can be found
2423 via elf_sym_hashes (input_bfd).
2425 When generating relocatable output, this function must handle
2426 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2427 going to be the section symbol corresponding to the output
2428 section, which means that the addend must be adjusted
2432 m32r_elf_relocate_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2433 struct bfd_link_info
*info
,
2435 asection
*input_section
,
2437 Elf_Internal_Rela
*relocs
,
2438 Elf_Internal_Sym
*local_syms
,
2439 asection
**local_sections
)
2441 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2442 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
2443 Elf_Internal_Rela
*rel
, *relend
;
2444 /* Assume success. */
2445 bfd_boolean ret
= TRUE
;
2447 struct elf_m32r_link_hash_table
*htab
= m32r_elf_hash_table (info
);
2449 bfd_vma
*local_got_offsets
;
2450 asection
*sgot
, *splt
, *sreloc
;
2451 bfd_vma high_address
= bfd_get_section_limit (input_bfd
, input_section
);
2453 dynobj
= htab
->root
.dynobj
;
2454 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2461 relend
= relocs
+ input_section
->reloc_count
;
2462 for (; rel
< relend
; rel
++)
2465 reloc_howto_type
*howto
;
2466 unsigned long r_symndx
;
2467 struct elf_link_hash_entry
*h
;
2468 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2469 ensure it's zero (we use REL relocs, not RELA). Therefore this
2470 should be assigning zero to `addend', but for clarity we use
2472 bfd_vma addend
= rel
->r_addend
;
2473 bfd_vma offset
= rel
->r_offset
;
2475 Elf_Internal_Sym
*sym
;
2477 const char *sym_name
;
2478 bfd_reloc_status_type r
;
2479 const char *errmsg
= NULL
;
2480 bfd_boolean use_rel
= FALSE
;
2483 r_type
= ELF32_R_TYPE (rel
->r_info
);
2484 if (r_type
< 0 || r_type
>= (int) R_M32R_max
)
2486 (*_bfd_error_handler
) (_("%B: unknown relocation type %d"),
2489 bfd_set_error (bfd_error_bad_value
);
2494 if ( r_type
== R_M32R_GNU_VTENTRY
2495 || r_type
== R_M32R_GNU_VTINHERIT
2496 || r_type
== R_M32R_NONE
2497 || r_type
== R_M32R_RELA_GNU_VTENTRY
2498 || r_type
== R_M32R_RELA_GNU_VTINHERIT
)
2501 if (r_type
<= R_M32R_GNU_VTENTRY
)
2504 howto
= m32r_elf_howto_table
+ r_type
;
2505 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2511 if (r_symndx
< symtab_hdr
->sh_info
)
2514 sym
= local_syms
+ r_symndx
;
2515 sec
= local_sections
[r_symndx
];
2516 sym_name
= "<local symbol>";
2520 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2521 addend
= rel
->r_addend
;
2525 relocation
= (sec
->output_section
->vma
2526 + sec
->output_offset
2532 /* External symbol. */
2535 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2536 while (h
->root
.type
== bfd_link_hash_indirect
2537 || h
->root
.type
== bfd_link_hash_warning
)
2538 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2539 sym_name
= h
->root
.root
.string
;
2541 if (h
->root
.type
== bfd_link_hash_defined
2542 || h
->root
.type
== bfd_link_hash_defweak
)
2545 sec
= h
->root
.u
.def
.section
;
2547 dyn
= htab
->root
.dynamic_sections_created
;
2548 sec
= h
->root
.u
.def
.section
;
2549 if (r_type
== R_M32R_GOTPC24
2550 || (r_type
== R_M32R_GOTPC_HI_ULO
2551 || r_type
== R_M32R_GOTPC_HI_SLO
2552 || r_type
== R_M32R_GOTPC_LO
)
2553 || (r_type
== R_M32R_26_PLTREL
2554 && h
->plt
.offset
!= (bfd_vma
) -1)
2555 || ((r_type
== R_M32R_GOT24
2556 || r_type
== R_M32R_GOT16_HI_ULO
2557 || r_type
== R_M32R_GOT16_HI_SLO
2558 || r_type
== R_M32R_GOT16_LO
)
2559 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2562 || (! info
->symbolic
&& h
->dynindx
!= -1)
2563 || !h
->def_regular
))
2565 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2567 && (((r_type
== R_M32R_16_RELA
2568 || r_type
== R_M32R_32_RELA
2569 || r_type
== R_M32R_24_RELA
2570 || r_type
== R_M32R_HI16_ULO_RELA
2571 || r_type
== R_M32R_HI16_SLO_RELA
2572 || r_type
== R_M32R_LO16_RELA
)
2573 && !h
->forced_local
)
2574 || r_type
== R_M32R_REL32
2575 || r_type
== R_M32R_10_PCREL_RELA
2576 || r_type
== R_M32R_18_PCREL_RELA
2577 || r_type
== R_M32R_26_PCREL_RELA
)
2578 && ((input_section
->flags
& SEC_ALLOC
) != 0
2579 /* DWARF will emit R_M32R_16(24,32) relocations
2580 in its sections against symbols defined
2581 externally in shared libraries. We can't do
2582 anything with them here. */
2583 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2584 && h
->def_dynamic
))))
2586 /* In these cases, we don't need the relocation
2587 value. We check specially because in some
2588 obscure cases sec->output_section will be NULL. */
2590 else if (sec
->output_section
!= NULL
)
2591 relocation
= (h
->root
.u
.def
.value
2592 + sec
->output_section
->vma
2593 + sec
->output_offset
);
2594 else if (!info
->relocatable
)
2596 (*_bfd_error_handler
)
2597 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2600 (long) rel
->r_offset
,
2602 h
->root
.root
.string
);
2605 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2607 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
2608 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2610 else if (!info
->relocatable
)
2612 if (! ((*info
->callbacks
->undefined_symbol
)
2613 (info
, h
->root
.root
.string
, input_bfd
,
2614 input_section
, offset
,
2615 (info
->unresolved_syms_in_objects
== RM_GENERATE_ERROR
2616 || ELF_ST_VISIBILITY (h
->other
)))))
2621 if (sec
!= NULL
&& elf_discarded_section (sec
))
2623 /* For relocs against symbols from removed linkonce sections,
2624 or sections discarded by a linker script, we just want the
2625 section contents zeroed. Avoid any special processing. */
2626 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
2632 if (info
->relocatable
&& !use_rel
)
2634 /* This is a relocatable link. We don't have to change
2635 anything, unless the reloc is against a section symbol,
2636 in which case we have to adjust according to where the
2637 section symbol winds up in the output section. */
2638 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2639 rel
->r_addend
+= sec
->output_offset
;
2643 if (info
->relocatable
&& use_rel
)
2645 /* This is a relocatable link. We don't have to change
2646 anything, unless the reloc is against a section symbol,
2647 in which case we have to adjust according to where the
2648 section symbol winds up in the output section. */
2649 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
2652 addend
+= sec
->output_offset
;
2654 /* If partial_inplace, we need to store any additional addend
2655 back in the section. */
2656 if (! howto
->partial_inplace
)
2658 /* ??? Here is a nice place to call a special_function
2660 if (r_type
!= R_M32R_HI16_SLO
&& r_type
!= R_M32R_HI16_ULO
)
2661 r
= _bfd_relocate_contents (howto
, input_bfd
,
2662 addend
, contents
+ offset
);
2665 Elf_Internal_Rela
*lorel
;
2667 /* We allow an arbitrary number of HI16 relocs before the
2668 LO16 reloc. This permits gcc to emit the HI and LO relocs
2670 for (lorel
= rel
+ 1;
2672 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2673 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
2677 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
2679 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
2684 r
= _bfd_relocate_contents (howto
, input_bfd
,
2685 addend
, contents
+ offset
);
2690 /* Sanity check the address. */
2691 if (offset
> high_address
)
2693 r
= bfd_reloc_outofrange
;
2697 switch ((int) r_type
)
2700 /* Relocation is relative to the start of the global offset
2701 table (for ld24 rx, #uimm24). eg access at label+addend
2703 ld24 rx. #label@GOTOFF + addend
2706 BFD_ASSERT (sgot
!= NULL
);
2708 relocation
= -(relocation
- sgot
->output_section
->vma
);
2709 rel
->r_addend
= -rel
->r_addend
;
2712 case R_M32R_GOTOFF_HI_ULO
:
2713 case R_M32R_GOTOFF_HI_SLO
:
2714 case R_M32R_GOTOFF_LO
:
2715 BFD_ASSERT (sgot
!= NULL
);
2717 relocation
-= sgot
->output_section
->vma
;
2719 if ((r_type
== R_M32R_GOTOFF_HI_SLO
)
2720 && ((relocation
+ rel
->r_addend
) & 0x8000))
2721 rel
->r_addend
+= 0x10000;
2724 case R_M32R_GOTPC24
:
2725 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2726 ld24 rx,#_GLOBAL_OFFSET_TABLE_
2728 relocation
= sgot
->output_section
->vma
;
2731 case R_M32R_GOTPC_HI_ULO
:
2732 case R_M32R_GOTPC_HI_SLO
:
2733 case R_M32R_GOTPC_LO
:
2735 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2737 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2738 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2741 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2742 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2744 relocation
= sgot
->output_section
->vma
;
2745 relocation
-= (input_section
->output_section
->vma
2746 + input_section
->output_offset
2748 if ((r_type
== R_M32R_GOTPC_HI_SLO
)
2749 && ((relocation
+ rel
->r_addend
) & 0x8000))
2750 rel
->r_addend
+= 0x10000;
2754 case R_M32R_GOT16_HI_ULO
:
2755 case R_M32R_GOT16_HI_SLO
:
2756 case R_M32R_GOT16_LO
:
2759 /* Relocation is to the entry for this symbol in the global
2761 BFD_ASSERT (sgot
!= NULL
);
2768 off
= h
->got
.offset
;
2769 BFD_ASSERT (off
!= (bfd_vma
) -1);
2771 dyn
= htab
->root
.dynamic_sections_created
;
2772 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
2779 /* This is actually a static link, or it is a
2780 -Bsymbolic link and the symbol is defined
2781 locally, or the symbol was forced to be local
2782 because of a version file. We must initialize
2783 this entry in the global offset table. Since the
2784 offset must always be a multiple of 4, we use the
2785 least significant bit to record whether we have
2786 initialized it already.
2788 When doing a dynamic link, we create a .rela.got
2789 relocation entry to initialize the value. This
2790 is done in the finish_dynamic_symbol routine. */
2795 bfd_put_32 (output_bfd
, relocation
,
2796 sgot
->contents
+ off
);
2801 relocation
= sgot
->output_offset
+ off
;
2808 BFD_ASSERT (local_got_offsets
!= NULL
2809 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
2811 off
= local_got_offsets
[r_symndx
];
2813 /* The offset must always be a multiple of 4. We use
2814 the least significant bit to record whether we have
2815 already processed this entry. */
2820 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
2825 Elf_Internal_Rela outrel
;
2827 /* We need to generate a R_M32R_RELATIVE reloc
2828 for the dynamic linker. */
2829 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
2830 BFD_ASSERT (srelgot
!= NULL
);
2832 outrel
.r_offset
= (sgot
->output_section
->vma
2833 + sgot
->output_offset
2835 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2836 outrel
.r_addend
= relocation
;
2837 loc
= srelgot
->contents
;
2838 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
2839 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2840 ++srelgot
->reloc_count
;
2843 local_got_offsets
[r_symndx
] |= 1;
2846 relocation
= sgot
->output_offset
+ off
;
2848 if ((r_type
== R_M32R_GOT16_HI_SLO
)
2849 && ((relocation
+ rel
->r_addend
) & 0x8000))
2850 rel
->r_addend
+= 0x10000;
2854 case R_M32R_26_PLTREL
:
2855 /* Relocation is to the entry for this symbol in the
2856 procedure linkage table. */
2858 /* The native assembler will generate a 26_PLTREL reloc
2859 for a local symbol if you assemble a call from one
2860 section to another when using -K pic. */
2864 if (h
->forced_local
)
2867 if (h
->plt
.offset
== (bfd_vma
) -1)
2868 /* We didn't make a PLT entry for this symbol. This
2869 happens when statically linking PIC code, or when
2870 using -Bsymbolic. */
2873 relocation
= (splt
->output_section
->vma
2874 + splt
->output_offset
2878 case R_M32R_HI16_SLO_RELA
:
2879 if ((relocation
+ rel
->r_addend
) & 0x8000)
2880 rel
->r_addend
+= 0x10000;
2883 case R_M32R_16_RELA
:
2884 case R_M32R_24_RELA
:
2885 case R_M32R_32_RELA
:
2887 case R_M32R_10_PCREL_RELA
:
2888 case R_M32R_18_PCREL_RELA
:
2889 case R_M32R_26_PCREL_RELA
:
2890 case R_M32R_HI16_ULO_RELA
:
2891 case R_M32R_LO16_RELA
:
2894 && (input_section
->flags
& SEC_ALLOC
) != 0
2895 && (( r_type
!= R_M32R_10_PCREL_RELA
2896 && r_type
!= R_M32R_18_PCREL_RELA
2897 && r_type
!= R_M32R_26_PCREL_RELA
2898 && r_type
!= R_M32R_REL32
)
2901 && (! info
->symbolic
2902 || !h
->def_regular
))))
2904 Elf_Internal_Rela outrel
;
2905 bfd_boolean skip
, relocate
;
2908 /* When generating a shared object, these relocations
2909 are copied into the output file to be resolved at run
2915 name
= (bfd_elf_string_from_elf_section
2917 elf_elfheader (input_bfd
)->e_shstrndx
,
2918 elf_section_data (input_section
)->rel_hdr
.sh_name
));
2922 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
2923 && strcmp (bfd_get_section_name (input_bfd
,
2927 sreloc
= bfd_get_section_by_name (dynobj
, name
);
2928 BFD_ASSERT (sreloc
!= NULL
);
2934 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2938 if (outrel
.r_offset
== (bfd_vma
) -1)
2940 else if (outrel
.r_offset
== (bfd_vma
) -2)
2941 skip
= relocate
= TRUE
;
2942 outrel
.r_offset
+= (input_section
->output_section
->vma
2943 + input_section
->output_offset
);
2946 memset (&outrel
, 0, sizeof outrel
);
2947 else if ( r_type
== R_M32R_10_PCREL_RELA
2948 || r_type
== R_M32R_18_PCREL_RELA
2949 || r_type
== R_M32R_26_PCREL_RELA
2950 || r_type
== R_M32R_REL32
)
2952 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
2953 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2954 outrel
.r_addend
= rel
->r_addend
;
2958 /* h->dynindx may be -1 if this symbol was marked to
2961 || ((info
->symbolic
|| h
->dynindx
== -1)
2965 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2966 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2970 BFD_ASSERT (h
->dynindx
!= -1);
2971 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2972 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2976 loc
= sreloc
->contents
;
2977 loc
+= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
2978 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2979 ++sreloc
->reloc_count
;
2981 /* If this reloc is against an external symbol, we do
2982 not want to fiddle with the addend. Otherwise, we
2983 need to include the symbol value so that it becomes
2984 an addend for the dynamic reloc. */
2989 else if (r_type
!= R_M32R_10_PCREL_RELA
)
2993 case (int) R_M32R_10_PCREL
:
2994 r
= m32r_elf_do_10_pcrel_reloc (input_bfd
, howto
, input_section
,
2996 sec
, relocation
, addend
);
2999 case (int) R_M32R_HI16_SLO
:
3000 case (int) R_M32R_HI16_ULO
:
3002 Elf_Internal_Rela
*lorel
;
3004 /* We allow an arbitrary number of HI16 relocs before the
3005 LO16 reloc. This permits gcc to emit the HI and LO relocs
3007 for (lorel
= rel
+ 1;
3009 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
3010 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
3014 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
3016 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
3017 contents
, relocation
+ addend
);
3021 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3023 relocation
, addend
);
3028 case (int) R_M32R_SDA16_RELA
:
3029 case (int) R_M32R_SDA16
:
3033 BFD_ASSERT (sec
!= NULL
);
3034 name
= bfd_get_section_name (abfd
, sec
);
3036 if ( strcmp (name
, ".sdata") == 0
3037 || strcmp (name
, ".sbss") == 0
3038 || strcmp (name
, ".scommon") == 0)
3041 bfd
*out_bfd
= sec
->output_section
->owner
;
3043 r
= m32r_elf_final_sda_base (out_bfd
, info
,
3046 if (r
!= bfd_reloc_ok
)
3052 /* At this point `relocation' contains the object's
3054 relocation
-= sda_base
;
3055 /* Now it contains the offset from _SDA_BASE_. */
3059 (*_bfd_error_handler
)
3060 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3064 m32r_elf_howto_table
[(int) r_type
].name
);
3065 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3072 default : /* OLD_M32R_RELOC */
3074 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3076 relocation
, addend
);
3080 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3081 contents
, rel
->r_offset
,
3082 relocation
, rel
->r_addend
);
3088 if (r
!= bfd_reloc_ok
)
3090 /* FIXME: This should be generic enough to go in a utility. */
3094 name
= h
->root
.root
.string
;
3097 name
= (bfd_elf_string_from_elf_section
3098 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
3099 if (name
== NULL
|| *name
== '\0')
3100 name
= bfd_section_name (input_bfd
, sec
);
3108 case bfd_reloc_overflow
:
3109 if (! ((*info
->callbacks
->reloc_overflow
)
3110 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3111 (bfd_vma
) 0, input_bfd
, input_section
, offset
)))
3115 case bfd_reloc_undefined
:
3116 if (! ((*info
->callbacks
->undefined_symbol
)
3117 (info
, name
, input_bfd
, input_section
,
3122 case bfd_reloc_outofrange
:
3123 errmsg
= _("internal error: out of range error");
3126 case bfd_reloc_notsupported
:
3127 errmsg
= _("internal error: unsupported relocation error");
3130 case bfd_reloc_dangerous
:
3131 errmsg
= _("internal error: dangerous error");
3135 errmsg
= _("internal error: unknown error");
3139 if (!((*info
->callbacks
->warning
)
3140 (info
, errmsg
, name
, input_bfd
, input_section
,
3151 /* Finish up dynamic symbol handling. We set the contents of various
3152 dynamic sections here. */
3155 m32r_elf_finish_dynamic_symbol (bfd
*output_bfd
,
3156 struct bfd_link_info
*info
,
3157 struct elf_link_hash_entry
*h
,
3158 Elf_Internal_Sym
*sym
)
3160 struct elf_m32r_link_hash_table
*htab
;
3165 printf ("m32r_elf_finish_dynamic_symbol()\n");
3168 htab
= m32r_elf_hash_table (info
);
3169 dynobj
= htab
->root
.dynobj
;
3171 if (h
->plt
.offset
!= (bfd_vma
) -1)
3179 Elf_Internal_Rela rela
;
3181 /* This symbol has an entry in the procedure linkage table. Set
3184 BFD_ASSERT (h
->dynindx
!= -1);
3187 sgot
= htab
->sgotplt
;
3188 srela
= htab
->srelplt
;
3189 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
3191 /* Get the index in the procedure linkage table which
3192 corresponds to this symbol. This is the index of this symbol
3193 in all the symbols for which we are making plt entries. The
3194 first entry in the procedure linkage table is reserved. */
3195 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
3197 /* Get the offset into the .got table of the entry that
3198 corresponds to this function. Each .got entry is 4 bytes.
3199 The first three are reserved. */
3200 got_offset
= (plt_index
+ 3) * 4;
3202 /* Fill in the entry in the procedure linkage table. */
3205 bfd_put_32 (output_bfd
,
3207 + (((sgot
->output_section
->vma
3208 + sgot
->output_offset
3209 + got_offset
) >> 16) & 0xffff)),
3210 splt
->contents
+ h
->plt
.offset
);
3211 bfd_put_32 (output_bfd
,
3213 + ((sgot
->output_section
->vma
3214 + sgot
->output_offset
3215 + got_offset
) & 0xffff)),
3216 splt
->contents
+ h
->plt
.offset
+ 4);
3217 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3218 splt
->contents
+ h
->plt
.offset
+ 8);
3219 bfd_put_32 (output_bfd
,
3221 + plt_index
* sizeof (Elf32_External_Rela
)),
3222 splt
->contents
+ h
->plt
.offset
+ 12);
3223 bfd_put_32 (output_bfd
,
3225 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3226 splt
->contents
+ h
->plt
.offset
+ 16);
3230 bfd_put_32 (output_bfd
,
3231 PLT_ENTRY_WORD0
+ got_offset
,
3232 splt
->contents
+ h
->plt
.offset
);
3233 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
,
3234 splt
->contents
+ h
->plt
.offset
+ 4);
3235 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3236 splt
->contents
+ h
->plt
.offset
+ 8);
3237 bfd_put_32 (output_bfd
,
3239 + plt_index
* sizeof (Elf32_External_Rela
)),
3240 splt
->contents
+ h
->plt
.offset
+ 12);
3241 bfd_put_32 (output_bfd
,
3243 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3244 splt
->contents
+ h
->plt
.offset
+ 16);
3247 /* Fill in the entry in the global offset table. */
3248 bfd_put_32 (output_bfd
,
3249 (splt
->output_section
->vma
3250 + splt
->output_offset
3252 + 12), /* same offset */
3253 sgot
->contents
+ got_offset
);
3255 /* Fill in the entry in the .rela.plt section. */
3256 rela
.r_offset
= (sgot
->output_section
->vma
3257 + sgot
->output_offset
3259 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_JMP_SLOT
);
3261 loc
= srela
->contents
;
3262 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
3263 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3265 if (!h
->def_regular
)
3267 /* Mark the symbol as undefined, rather than as defined in
3268 the .plt section. Leave the value alone. */
3269 sym
->st_shndx
= SHN_UNDEF
;
3273 if (h
->got
.offset
!= (bfd_vma
) -1)
3277 Elf_Internal_Rela rela
;
3279 /* This symbol has an entry in the global offset table. Set it
3283 srela
= htab
->srelgot
;
3284 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
3286 rela
.r_offset
= (sgot
->output_section
->vma
3287 + sgot
->output_offset
3288 + (h
->got
.offset
&~ 1));
3290 /* If this is a -Bsymbolic link, and the symbol is defined
3291 locally, we just want to emit a RELATIVE reloc. Likewise if
3292 the symbol was forced to be local because of a version file.
3293 The entry in the global offset table will already have been
3294 initialized in the relocate_section function. */
3301 rela
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
3302 rela
.r_addend
= (h
->root
.u
.def
.value
3303 + h
->root
.u
.def
.section
->output_section
->vma
3304 + h
->root
.u
.def
.section
->output_offset
);
3308 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
3309 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
3310 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_GLOB_DAT
);
3314 loc
= srela
->contents
;
3315 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
3316 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3317 ++srela
->reloc_count
;
3323 Elf_Internal_Rela rela
;
3325 /* This symbols needs a copy reloc. Set it up. */
3327 BFD_ASSERT (h
->dynindx
!= -1
3328 && (h
->root
.type
== bfd_link_hash_defined
3329 || h
->root
.type
== bfd_link_hash_defweak
));
3331 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
3333 BFD_ASSERT (s
!= NULL
);
3335 rela
.r_offset
= (h
->root
.u
.def
.value
3336 + h
->root
.u
.def
.section
->output_section
->vma
3337 + h
->root
.u
.def
.section
->output_offset
);
3338 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_COPY
);
3341 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
3342 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3346 /* Mark some specially defined symbols as absolute. */
3347 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
3348 || h
== htab
->root
.hgot
)
3349 sym
->st_shndx
= SHN_ABS
;
3355 /* Finish up the dynamic sections. */
3358 m32r_elf_finish_dynamic_sections (bfd
*output_bfd
,
3359 struct bfd_link_info
*info
)
3361 struct elf_m32r_link_hash_table
*htab
;
3367 printf ("m32r_elf_finish_dynamic_sections()\n");
3370 htab
= m32r_elf_hash_table (info
);
3371 dynobj
= htab
->root
.dynobj
;
3373 sgot
= htab
->sgotplt
;
3374 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3376 if (htab
->root
.dynamic_sections_created
)
3379 Elf32_External_Dyn
*dyncon
, *dynconend
;
3381 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
3383 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3384 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3386 for (; dyncon
< dynconend
; dyncon
++)
3388 Elf_Internal_Dyn dyn
;
3392 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3401 s
= htab
->sgot
->output_section
;
3405 s
= htab
->srelplt
->output_section
;
3407 BFD_ASSERT (s
!= NULL
);
3408 dyn
.d_un
.d_ptr
= s
->vma
;
3409 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3413 s
= htab
->srelplt
->output_section
;
3414 BFD_ASSERT (s
!= NULL
);
3415 dyn
.d_un
.d_val
= s
->size
;
3416 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3420 /* My reading of the SVR4 ABI indicates that the
3421 procedure linkage table relocs (DT_JMPREL) should be
3422 included in the overall relocs (DT_RELA). This is
3423 what Solaris does. However, UnixWare can not handle
3424 that case. Therefore, we override the DT_RELASZ entry
3425 here to make it not include the JMPREL relocs. Since
3426 the linker script arranges for .rela.plt to follow all
3427 other relocation sections, we don't have to worry
3428 about changing the DT_RELA entry. */
3429 if (htab
->srelplt
!= NULL
)
3431 s
= htab
->srelplt
->output_section
;
3432 dyn
.d_un
.d_val
-= s
->size
;
3434 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3439 /* Fill in the first entry in the procedure linkage table. */
3441 if (splt
&& splt
->size
> 0)
3445 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
3446 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
3447 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
3448 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
3449 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
3454 /* addr = .got + 4 */
3455 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
3456 bfd_put_32 (output_bfd
,
3457 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
3459 bfd_put_32 (output_bfd
,
3460 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
3461 splt
->contents
+ 4);
3462 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
3463 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
3464 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
3467 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
3472 /* Fill in the first three entries in the global offset table. */
3473 if (sgot
&& sgot
->size
> 0)
3476 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
3478 bfd_put_32 (output_bfd
,
3479 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
3481 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
3482 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
3484 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3491 /* Set the right machine number. */
3494 m32r_elf_object_p (bfd
*abfd
)
3496 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3499 case E_M32R_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r
); break;
3500 case E_M32RX_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32rx
); break;
3501 case E_M32R2_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r2
); break;
3506 /* Store the machine number in the flags field. */
3509 m32r_elf_final_write_processing (bfd
*abfd
,
3510 bfd_boolean linker ATTRIBUTE_UNUSED
)
3514 switch (bfd_get_mach (abfd
))
3517 case bfd_mach_m32r
: val
= E_M32R_ARCH
; break;
3518 case bfd_mach_m32rx
: val
= E_M32RX_ARCH
; break;
3519 case bfd_mach_m32r2
: val
= E_M32R2_ARCH
; break;
3522 elf_elfheader (abfd
)->e_flags
&=~ EF_M32R_ARCH
;
3523 elf_elfheader (abfd
)->e_flags
|= val
;
3526 /* Function to keep M32R specific file flags. */
3529 m32r_elf_set_private_flags (bfd
*abfd
, flagword flags
)
3531 BFD_ASSERT (!elf_flags_init (abfd
)
3532 || elf_elfheader (abfd
)->e_flags
== flags
);
3534 elf_elfheader (abfd
)->e_flags
= flags
;
3535 elf_flags_init (abfd
) = TRUE
;
3539 /* Merge backend specific data from an object file to the output
3540 object file when linking. */
3543 m32r_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3548 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3549 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3552 in_flags
= elf_elfheader (ibfd
)->e_flags
;
3553 out_flags
= elf_elfheader (obfd
)->e_flags
;
3555 if (! elf_flags_init (obfd
))
3557 /* If the input is the default architecture then do not
3558 bother setting the flags for the output architecture,
3559 instead allow future merges to do this. If no future
3560 merges ever set these flags then they will retain their
3561 unitialised values, which surprise surprise, correspond
3562 to the default values. */
3563 if (bfd_get_arch_info (ibfd
)->the_default
)
3566 elf_flags_init (obfd
) = TRUE
;
3567 elf_elfheader (obfd
)->e_flags
= in_flags
;
3569 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
3570 && bfd_get_arch_info (obfd
)->the_default
)
3571 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
3572 bfd_get_mach (ibfd
));
3577 /* Check flag compatibility. */
3578 if (in_flags
== out_flags
)
3581 if ((in_flags
& EF_M32R_ARCH
) != (out_flags
& EF_M32R_ARCH
))
3583 if ( ((in_flags
& EF_M32R_ARCH
) != E_M32R_ARCH
)
3584 || ((out_flags
& EF_M32R_ARCH
) == E_M32R_ARCH
)
3585 || ((in_flags
& EF_M32R_ARCH
) == E_M32R2_ARCH
))
3587 (*_bfd_error_handler
)
3588 (_("%B: Instruction set mismatch with previous modules"), ibfd
);
3590 bfd_set_error (bfd_error_bad_value
);
3598 /* Display the flags field. */
3601 m32r_elf_print_private_bfd_data (bfd
*abfd
, void * ptr
)
3603 FILE * file
= (FILE *) ptr
;
3605 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
3607 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
3609 fprintf (file
, _("private flags = %lx"), elf_elfheader (abfd
)->e_flags
);
3611 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3614 case E_M32R_ARCH
: fprintf (file
, _(": m32r instructions")); break;
3615 case E_M32RX_ARCH
: fprintf (file
, _(": m32rx instructions")); break;
3616 case E_M32R2_ARCH
: fprintf (file
, _(": m32r2 instructions")); break;
3625 m32r_elf_gc_mark_hook (asection
*sec
,
3626 struct bfd_link_info
*info
,
3627 Elf_Internal_Rela
*rel
,
3628 struct elf_link_hash_entry
*h
,
3629 Elf_Internal_Sym
*sym
)
3632 switch (ELF32_R_TYPE (rel
->r_info
))
3634 case R_M32R_GNU_VTINHERIT
:
3635 case R_M32R_GNU_VTENTRY
:
3636 case R_M32R_RELA_GNU_VTINHERIT
:
3637 case R_M32R_RELA_GNU_VTENTRY
:
3641 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3645 m32r_elf_gc_sweep_hook (bfd
*abfd ATTRIBUTE_UNUSED
,
3646 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3647 asection
*sec ATTRIBUTE_UNUSED
,
3648 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
)
3650 /* Update the got entry reference counts for the section being removed. */
3651 Elf_Internal_Shdr
*symtab_hdr
;
3652 struct elf_link_hash_entry
**sym_hashes
;
3653 bfd_signed_vma
*local_got_refcounts
;
3654 const Elf_Internal_Rela
*rel
, *relend
;
3656 elf_section_data (sec
)->local_dynrel
= NULL
;
3658 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3659 sym_hashes
= elf_sym_hashes (abfd
);
3660 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3662 relend
= relocs
+ sec
->reloc_count
;
3663 for (rel
= relocs
; rel
< relend
; rel
++)
3665 unsigned long r_symndx
;
3666 struct elf_link_hash_entry
*h
= NULL
;
3668 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3669 if (r_symndx
>= symtab_hdr
->sh_info
)
3671 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3672 while (h
->root
.type
== bfd_link_hash_indirect
3673 || h
->root
.type
== bfd_link_hash_warning
)
3674 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3677 switch (ELF32_R_TYPE (rel
->r_info
))
3679 case R_M32R_GOT16_HI_ULO
:
3680 case R_M32R_GOT16_HI_SLO
:
3681 case R_M32R_GOT16_LO
:
3683 case R_M32R_GOTOFF_HI_ULO
:
3684 case R_M32R_GOTOFF_HI_SLO
:
3685 case R_M32R_GOTOFF_LO
:
3687 case R_M32R_GOTPC_HI_ULO
:
3688 case R_M32R_GOTPC_HI_SLO
:
3689 case R_M32R_GOTPC_LO
:
3690 case R_M32R_GOTPC24
:
3693 if (h
->got
.refcount
> 0)
3698 if (local_got_refcounts
&& local_got_refcounts
[r_symndx
] > 0)
3699 local_got_refcounts
[r_symndx
]--;
3703 case R_M32R_16_RELA
:
3704 case R_M32R_24_RELA
:
3705 case R_M32R_32_RELA
:
3707 case R_M32R_HI16_ULO_RELA
:
3708 case R_M32R_HI16_SLO_RELA
:
3709 case R_M32R_LO16_RELA
:
3710 case R_M32R_SDA16_RELA
:
3711 case R_M32R_10_PCREL_RELA
:
3712 case R_M32R_18_PCREL_RELA
:
3713 case R_M32R_26_PCREL_RELA
:
3716 struct elf_m32r_link_hash_entry
*eh
;
3717 struct elf_m32r_dyn_relocs
**pp
;
3718 struct elf_m32r_dyn_relocs
*p
;
3720 if (!info
->shared
&& h
->plt
.refcount
> 0)
3721 h
->plt
.refcount
-= 1;
3723 eh
= (struct elf_m32r_link_hash_entry
*) h
;
3725 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
3728 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
3729 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
3730 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
3731 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
3741 case R_M32R_26_PLTREL
:
3744 if (h
->plt
.refcount
> 0)
3757 /* Look through the relocs for a section during the first phase.
3758 Since we don't do .gots or .plts, we just need to consider the
3759 virtual table relocs for gc. */
3762 m32r_elf_check_relocs (bfd
*abfd
,
3763 struct bfd_link_info
*info
,
3765 const Elf_Internal_Rela
*relocs
)
3767 Elf_Internal_Shdr
*symtab_hdr
;
3768 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3769 const Elf_Internal_Rela
*rel
;
3770 const Elf_Internal_Rela
*rel_end
;
3771 struct elf_m32r_link_hash_table
*htab
;
3773 bfd_vma
*local_got_offsets
;
3774 asection
*sgot
, *srelgot
, *sreloc
;
3776 if (info
->relocatable
)
3779 sgot
= srelgot
= sreloc
= NULL
;
3781 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3782 sym_hashes
= elf_sym_hashes (abfd
);
3783 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof (Elf32_External_Sym
);
3784 if (!elf_bad_symtab (abfd
))
3785 sym_hashes_end
-= symtab_hdr
->sh_info
;
3787 htab
= m32r_elf_hash_table (info
);
3788 dynobj
= htab
->root
.dynobj
;
3789 local_got_offsets
= elf_local_got_offsets (abfd
);
3791 rel_end
= relocs
+ sec
->reloc_count
;
3792 for (rel
= relocs
; rel
< rel_end
; rel
++)
3795 struct elf_link_hash_entry
*h
;
3796 unsigned long r_symndx
;
3798 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3799 r_type
= ELF32_R_TYPE (rel
->r_info
);
3800 if (r_symndx
< symtab_hdr
->sh_info
)
3804 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3805 while (h
->root
.type
== bfd_link_hash_indirect
3806 || h
->root
.type
== bfd_link_hash_warning
)
3807 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3810 /* Some relocs require a global offset table. */
3811 if (htab
->sgot
== NULL
)
3815 case R_M32R_GOT16_HI_ULO
:
3816 case R_M32R_GOT16_HI_SLO
:
3818 case R_M32R_GOTOFF_HI_ULO
:
3819 case R_M32R_GOTOFF_HI_SLO
:
3820 case R_M32R_GOTOFF_LO
:
3821 case R_M32R_GOT16_LO
:
3822 case R_M32R_GOTPC24
:
3823 case R_M32R_GOTPC_HI_ULO
:
3824 case R_M32R_GOTPC_HI_SLO
:
3825 case R_M32R_GOTPC_LO
:
3828 htab
->root
.dynobj
= dynobj
= abfd
;
3829 if (! create_got_section (dynobj
, info
))
3840 case R_M32R_GOT16_HI_ULO
:
3841 case R_M32R_GOT16_HI_SLO
:
3842 case R_M32R_GOT16_LO
:
3846 h
->got
.refcount
+= 1;
3849 bfd_signed_vma
*local_got_refcounts
;
3851 /* This is a global offset table entry for a local
3853 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3854 if (local_got_refcounts
== NULL
)
3858 size
= symtab_hdr
->sh_info
;
3859 size
*= sizeof (bfd_signed_vma
);
3860 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3861 if (local_got_refcounts
== NULL
)
3863 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3865 local_got_refcounts
[r_symndx
] += 1;
3869 case R_M32R_26_PLTREL
:
3870 /* This symbol requires a procedure linkage table entry. We
3871 actually build the entry in adjust_dynamic_symbol,
3872 because this might be a case of linking PIC code without
3873 linking in any dynamic objects, in which case we don't
3874 need to generate a procedure linkage table after all. */
3876 /* If this is a local symbol, we resolve it directly without
3877 creating a procedure linkage table entry. */
3881 if (h
->forced_local
)
3885 h
->plt
.refcount
+= 1;
3888 case R_M32R_16_RELA
:
3889 case R_M32R_24_RELA
:
3890 case R_M32R_32_RELA
:
3892 case R_M32R_HI16_ULO_RELA
:
3893 case R_M32R_HI16_SLO_RELA
:
3894 case R_M32R_LO16_RELA
:
3895 case R_M32R_SDA16_RELA
:
3896 case R_M32R_10_PCREL_RELA
:
3897 case R_M32R_18_PCREL_RELA
:
3898 case R_M32R_26_PCREL_RELA
:
3900 if (h
!= NULL
&& !info
->shared
)
3903 h
->plt
.refcount
+= 1;
3906 /* If we are creating a shared library, and this is a reloc
3907 against a global symbol, or a non PC relative reloc
3908 against a local symbol, then we need to copy the reloc
3909 into the shared library. However, if we are linking with
3910 -Bsymbolic, we do not need to copy a reloc against a
3911 global symbol which is defined in an object we are
3912 including in the link (i.e., DEF_REGULAR is set). At
3913 this point we have not seen all the input files, so it is
3914 possible that DEF_REGULAR is not set now but will be set
3915 later (it is never cleared). We account for that
3916 possibility below by storing information in the
3917 dyn_relocs field of the hash table entry. A similar
3918 situation occurs when creating shared libraries and symbol
3919 visibility changes render the symbol local.
3921 If on the other hand, we are creating an executable, we
3922 may need to keep relocations for symbols satisfied by a
3923 dynamic library if we manage to avoid copy relocs for the
3926 && (sec
->flags
& SEC_ALLOC
) != 0
3927 && (( r_type
!= R_M32R_26_PCREL_RELA
3928 && r_type
!= R_M32R_18_PCREL_RELA
3929 && r_type
!= R_M32R_10_PCREL_RELA
3930 && r_type
!= R_M32R_REL32
)
3932 && (! info
->symbolic
3933 || h
->root
.type
== bfd_link_hash_defweak
3934 || !h
->def_regular
))))
3936 && (sec
->flags
& SEC_ALLOC
) != 0
3938 && (h
->root
.type
== bfd_link_hash_defweak
3939 || !h
->def_regular
)))
3941 struct elf_m32r_dyn_relocs
*p
;
3942 struct elf_m32r_dyn_relocs
**head
;
3945 htab
->root
.dynobj
= dynobj
= abfd
;
3947 /* When creating a shared object, we must copy these
3948 relocs into the output file. We create a reloc
3949 section in dynobj and make room for the reloc. */
3954 name
= (bfd_elf_string_from_elf_section
3956 elf_elfheader (abfd
)->e_shstrndx
,
3957 elf_section_data (sec
)->rel_hdr
.sh_name
));
3961 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
3962 && strcmp (bfd_get_section_name (abfd
, sec
),
3965 sreloc
= bfd_get_section_by_name (dynobj
, name
);
3970 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3971 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3972 if ((sec
->flags
& SEC_ALLOC
) != 0)
3973 flags
|= SEC_ALLOC
| SEC_LOAD
;
3974 sreloc
= bfd_make_section_with_flags (dynobj
,
3978 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
3981 elf_section_data (sec
)->sreloc
= sreloc
;
3984 /* If this is a global symbol, we count the number of
3985 relocations we need for this symbol. */
3987 head
= &((struct elf_m32r_link_hash_entry
*) h
)->dyn_relocs
;
3993 /* Track dynamic relocs needed for local syms too. */
3994 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3999 vpp
= &elf_section_data (s
)->local_dynrel
;
4000 head
= (struct elf_m32r_dyn_relocs
**) vpp
;
4004 if (p
== NULL
|| p
->sec
!= sec
)
4006 bfd_size_type amt
= sizeof (*p
);
4008 p
= bfd_alloc (dynobj
, amt
);
4019 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
4020 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
4021 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
4022 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
4027 /* This relocation describes the C++ object vtable hierarchy.
4028 Reconstruct it for later use during GC. */
4029 case R_M32R_RELA_GNU_VTINHERIT
:
4030 case R_M32R_GNU_VTINHERIT
:
4031 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4035 /* This relocation describes which C++ vtable entries are actually
4036 used. Record for later use during GC. */
4037 case R_M32R_GNU_VTENTRY
:
4038 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
4041 case R_M32R_RELA_GNU_VTENTRY
:
4042 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4051 static const struct bfd_elf_special_section m32r_elf_special_sections
[] =
4053 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
4054 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
4055 { NULL
, 0, 0, 0, 0 }
4059 m32r_elf_fake_sections (bfd
*abfd
,
4060 Elf_Internal_Shdr
*hdr ATTRIBUTE_UNUSED
,
4065 name
= bfd_get_section_name (abfd
, sec
);
4067 /* The generic elf_fake_sections will set up REL_HDR using the
4068 default kind of relocations. But, we may actually need both
4069 kinds of relocations, so we set up the second header here.
4071 This is not necessary for the O32 ABI since that only uses Elf32_Rel
4072 relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4073 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one
4074 of the resulting empty .rela.<section> sections starts with
4075 sh_offset == object size, and ld doesn't allow that. While the check
4076 is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4077 avoided by not emitting those useless sections in the first place. */
4078 if ((sec
->flags
& SEC_RELOC
) != 0)
4080 struct bfd_elf_section_data
*esd
;
4081 bfd_size_type amt
= sizeof (Elf_Internal_Shdr
);
4083 esd
= elf_section_data (sec
);
4084 BFD_ASSERT (esd
->rel_hdr2
== NULL
);
4085 esd
->rel_hdr2
= bfd_zalloc (abfd
, amt
);
4088 _bfd_elf_init_reloc_shdr (abfd
, esd
->rel_hdr2
, sec
,
4095 static enum elf_reloc_type_class
4096 m32r_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
4098 switch ((int) ELF32_R_TYPE (rela
->r_info
))
4100 case R_M32R_RELATIVE
: return reloc_class_relative
;
4101 case R_M32R_JMP_SLOT
: return reloc_class_plt
;
4102 case R_M32R_COPY
: return reloc_class_copy
;
4103 default: return reloc_class_normal
;
4107 #define ELF_ARCH bfd_arch_m32r
4108 #define ELF_MACHINE_CODE EM_M32R
4109 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4110 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4112 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4113 #define TARGET_BIG_NAME "elf32-m32r"
4114 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4115 #define TARGET_LITTLE_NAME "elf32-m32rle"
4117 #define elf_info_to_howto m32r_info_to_howto
4118 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4119 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4120 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4121 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4122 #define elf_backend_relocate_section m32r_elf_relocate_section
4123 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4124 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4125 #define elf_backend_check_relocs m32r_elf_check_relocs
4127 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4128 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4129 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4130 #define elf_backend_omit_section_dynsym \
4131 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4132 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4133 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4134 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4135 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4136 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4138 #define elf_backend_can_gc_sections 1
4140 #define elf_backend_rela_normal 1
4142 #define elf_backend_can_refcount 1
4143 #define elf_backend_want_got_plt 1
4144 #define elf_backend_plt_readonly 1
4145 #define elf_backend_want_plt_sym 0
4146 #define elf_backend_got_header_size 12
4148 #define elf_backend_may_use_rel_p 1
4149 #ifdef USE_M32R_OLD_RELOC
4150 #define elf_backend_default_use_rela_p 0
4151 #define elf_backend_may_use_rela_p 0
4153 #define elf_backend_default_use_rela_p 1
4154 #define elf_backend_may_use_rela_p 1
4155 #define elf_backend_fake_sections m32r_elf_fake_sections
4158 #define elf_backend_object_p m32r_elf_object_p
4159 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4160 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4161 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4162 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4163 #define elf_backend_special_sections m32r_elf_special_sections
4165 #include "elf32-target.h"
4167 #undef ELF_MAXPAGESIZE
4168 #define ELF_MAXPAGESIZE 0x1000
4170 #undef TARGET_BIG_SYM
4171 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4172 #undef TARGET_BIG_NAME
4173 #define TARGET_BIG_NAME "elf32-m32r-linux"
4174 #undef TARGET_LITTLE_SYM
4175 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4176 #undef TARGET_LITTLE_NAME
4177 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4179 #define elf32_bed elf32_m32r_lin_bed
4181 #include "elf32-target.h"