1 /* M32R-specific support for 32-bit ELF.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2006, 2007, 2008, 2009, 2010 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 3 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,
20 MA 02110-1301, USA. */
28 #define NOP_INSN 0x7000
29 #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
31 /* Use REL instead of RELA to save space.
32 This only saves space in libraries and object files, but perhaps
33 relocs will be put in ROM? All in all though, REL relocs are a pain
40 /* Use RELA. But use REL to link old objects for backwords compatibility. */
42 /* Functions for the M32R ELF linker. */
44 /* The name of the dynamic interpreter. This is put in the .interp
47 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
49 /* The nop opcode we use. */
51 #define M32R_NOP 0x7000f000
53 #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
55 /* The size in bytes of an entry in the procedure linkage table. */
57 #define PLT_ENTRY_SIZE 20
58 #define PLT_HEADER_SIZE 20
60 /* The first one entries in a procedure linkage table are reserved,
61 and the initial contents are unimportant (we zero them out).
62 Subsequent entries look like this. */
64 #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
65 #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
66 #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
67 #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
68 #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
70 #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
71 #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
72 #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
73 #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
74 #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
76 #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
77 #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
78 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
79 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
80 #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
81 #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
82 #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
85 /* Utility to actually perform an R_M32R_10_PCREL reloc. */
87 static bfd_reloc_status_type
88 m32r_elf_do_10_pcrel_reloc (bfd
*abfd
,
89 reloc_howto_type
*howto
,
90 asection
*input_section
,
93 asection
*symbol_section ATTRIBUTE_UNUSED
,
97 bfd_signed_vma relocation
;
99 bfd_reloc_status_type status
;
101 /* Sanity check the address (offset in section). */
102 if (offset
> bfd_get_section_limit (abfd
, input_section
))
103 return bfd_reloc_outofrange
;
105 relocation
= symbol_value
+ addend
;
106 /* Make it pc relative. */
107 relocation
-= (input_section
->output_section
->vma
108 + input_section
->output_offset
);
109 /* These jumps mask off the lower two bits of the current address
110 before doing pcrel calculations. */
111 relocation
-= (offset
& -(bfd_vma
) 4);
113 if (relocation
< -0x200 || relocation
> 0x1ff)
114 status
= bfd_reloc_overflow
;
116 status
= bfd_reloc_ok
;
118 x
= bfd_get_16 (abfd
, data
+ offset
);
119 relocation
>>= howto
->rightshift
;
120 relocation
<<= howto
->bitpos
;
121 x
= (x
& ~howto
->dst_mask
) | (((x
& howto
->src_mask
) + relocation
) & howto
->dst_mask
);
122 bfd_put_16 (abfd
, (bfd_vma
) x
, data
+ offset
);
127 /* Handle the R_M32R_10_PCREL reloc. */
129 static bfd_reloc_status_type
130 m32r_elf_10_pcrel_reloc (bfd
* abfd
,
131 arelent
* reloc_entry
,
134 asection
* input_section
,
136 char ** error_message ATTRIBUTE_UNUSED
)
138 /* This part is from bfd_elf_generic_reloc. */
139 if (output_bfd
!= NULL
140 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
141 && (! reloc_entry
->howto
->partial_inplace
142 || reloc_entry
->addend
== 0))
144 reloc_entry
->address
+= input_section
->output_offset
;
148 if (output_bfd
!= NULL
)
149 /* FIXME: See bfd_perform_relocation. Is this right? */
150 return bfd_reloc_continue
;
152 return m32r_elf_do_10_pcrel_reloc (abfd
, reloc_entry
->howto
,
154 data
, reloc_entry
->address
,
157 + symbol
->section
->output_section
->vma
158 + symbol
->section
->output_offset
),
159 reloc_entry
->addend
);
162 /* Do generic partial_inplace relocation.
163 This is a local replacement for bfd_elf_generic_reloc. */
165 static bfd_reloc_status_type
166 m32r_elf_generic_reloc (bfd
*input_bfd
,
167 arelent
*reloc_entry
,
170 asection
*input_section
,
172 char **error_message ATTRIBUTE_UNUSED
)
174 bfd_reloc_status_type ret
;
176 bfd_byte
*inplace_address
;
178 /* This part is from bfd_elf_generic_reloc.
179 If we're relocating, and this an external symbol, we don't want
180 to change anything. */
181 if (output_bfd
!= NULL
182 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
183 && reloc_entry
->addend
== 0)
185 reloc_entry
->address
+= input_section
->output_offset
;
189 /* Now do the reloc in the usual way.
190 ??? It would be nice to call bfd_elf_generic_reloc here,
191 but we have partial_inplace set. bfd_elf_generic_reloc will
192 pass the handling back to bfd_install_relocation which will install
193 a section relative addend which is wrong. */
195 /* Sanity check the address (offset in section). */
196 if (reloc_entry
->address
> bfd_get_section_limit (input_bfd
, input_section
))
197 return bfd_reloc_outofrange
;
200 if (bfd_is_und_section (symbol
->section
)
201 && output_bfd
== NULL
)
202 ret
= bfd_reloc_undefined
;
204 if (bfd_is_com_section (symbol
->section
)
205 || output_bfd
!= NULL
)
208 relocation
= symbol
->value
;
210 /* Only do this for a final link. */
211 if (output_bfd
== NULL
)
213 relocation
+= symbol
->section
->output_section
->vma
;
214 relocation
+= symbol
->section
->output_offset
;
217 relocation
+= reloc_entry
->addend
;
218 inplace_address
= (bfd_byte
*) data
+ reloc_entry
->address
;
221 x = ( (x & ~reloc_entry->howto->dst_mask) | \
222 (((x & reloc_entry->howto->src_mask) + relocation) & \
223 reloc_entry->howto->dst_mask))
225 switch (reloc_entry
->howto
->size
)
229 short x
= bfd_get_16 (input_bfd
, inplace_address
);
231 bfd_put_16 (input_bfd
, (bfd_vma
) x
, inplace_address
);
236 unsigned long x
= bfd_get_32 (input_bfd
, inplace_address
);
238 bfd_put_32 (input_bfd
, (bfd_vma
)x
, inplace_address
);
245 if (output_bfd
!= NULL
)
246 reloc_entry
->address
+= input_section
->output_offset
;
251 /* Handle the R_M32R_SDA16 reloc.
252 This reloc is used to compute the address of objects in the small data area
253 and to perform loads and stores from that area.
254 The lower 16 bits are sign extended and added to the register specified
255 in the instruction, which is assumed to point to _SDA_BASE_. */
257 static bfd_reloc_status_type
258 m32r_elf_sda16_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
259 arelent
*reloc_entry
,
261 void * data ATTRIBUTE_UNUSED
,
262 asection
*input_section
,
264 char **error_message ATTRIBUTE_UNUSED
)
266 /* This part is from bfd_elf_generic_reloc. */
267 if (output_bfd
!= NULL
268 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
269 && (! reloc_entry
->howto
->partial_inplace
270 || reloc_entry
->addend
== 0))
272 reloc_entry
->address
+= input_section
->output_offset
;
276 if (output_bfd
!= NULL
)
277 /* FIXME: See bfd_perform_relocation. Is this right? */
278 return bfd_reloc_continue
;
280 /* FIXME: not sure what to do here yet. But then again, the linker
281 may never call us. */
286 /* Handle the R_M32R_HI16_[SU]LO relocs.
287 HI16_SLO is for the add3 and load/store with displacement instructions.
288 HI16_ULO is for the or3 instruction.
289 For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
290 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
291 we must add one to the high 16 bytes (which will get subtracted off when
292 the low 16 bits are added).
293 These relocs have to be done in combination with an R_M32R_LO16 reloc
294 because there is a carry from the LO16 to the HI16. Here we just save
295 the information we need; we do the actual relocation when we see the LO16.
296 This code is copied from the elf32-mips.c. We also support an arbitrary
297 number of HI16 relocs to be associated with a single LO16 reloc. The
298 assembler sorts the relocs to ensure each HI16 immediately precedes its
299 LO16. However if there are multiple copies, the assembler may not find
300 the real LO16 so it picks the first one it finds. */
304 struct m32r_hi16
*next
;
309 /* FIXME: This should not be a static variable. */
311 static struct m32r_hi16
*m32r_hi16_list
;
313 static bfd_reloc_status_type
314 m32r_elf_hi16_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
315 arelent
*reloc_entry
,
318 asection
*input_section
,
320 char **error_message ATTRIBUTE_UNUSED
)
322 bfd_reloc_status_type ret
;
326 /* This part is from bfd_elf_generic_reloc.
327 If we're relocating, and this an external symbol, we don't want
328 to change anything. */
329 if (output_bfd
!= NULL
330 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
331 && reloc_entry
->addend
== 0)
333 reloc_entry
->address
+= input_section
->output_offset
;
337 /* Sanity check the address (offset in section). */
338 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
339 return bfd_reloc_outofrange
;
342 if (bfd_is_und_section (symbol
->section
)
343 && output_bfd
== NULL
)
344 ret
= bfd_reloc_undefined
;
346 if (bfd_is_com_section (symbol
->section
))
349 relocation
= symbol
->value
;
351 relocation
+= symbol
->section
->output_section
->vma
;
352 relocation
+= symbol
->section
->output_offset
;
353 relocation
+= reloc_entry
->addend
;
355 /* Save the information, and let LO16 do the actual relocation. */
356 n
= bfd_malloc ((bfd_size_type
) sizeof *n
);
358 return bfd_reloc_outofrange
;
359 n
->addr
= (bfd_byte
*) data
+ reloc_entry
->address
;
360 n
->addend
= relocation
;
361 n
->next
= m32r_hi16_list
;
364 if (output_bfd
!= NULL
)
365 reloc_entry
->address
+= input_section
->output_offset
;
370 /* Handle an M32R ELF HI16 reloc. */
373 m32r_elf_relocate_hi16 (bfd
*input_bfd
,
375 Elf_Internal_Rela
*relhi
,
376 Elf_Internal_Rela
*rello
,
383 insn
= bfd_get_32 (input_bfd
, contents
+ relhi
->r_offset
);
385 addlo
= bfd_get_32 (input_bfd
, contents
+ rello
->r_offset
);
386 if (type
== R_M32R_HI16_SLO
)
387 addlo
= ((addlo
& 0xffff) ^ 0x8000) - 0x8000;
391 addend
+= ((insn
& 0xffff) << 16) + addlo
;
393 /* Reaccount for sign extension of low part. */
394 if (type
== R_M32R_HI16_SLO
395 && (addend
& 0x8000) != 0)
398 bfd_put_32 (input_bfd
,
399 (insn
& 0xffff0000) | ((addend
>> 16) & 0xffff),
400 contents
+ relhi
->r_offset
);
403 /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
404 inplace relocation; this function exists in order to do the
405 R_M32R_HI16_[SU]LO relocation described above. */
407 static bfd_reloc_status_type
408 m32r_elf_lo16_reloc (bfd
*input_bfd
,
409 arelent
*reloc_entry
,
412 asection
*input_section
,
414 char **error_message
)
416 /* This part is from bfd_elf_generic_reloc.
417 If we're relocating, and this an external symbol, we don't want
418 to change anything. */
419 if (output_bfd
!= NULL
420 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
421 && reloc_entry
->addend
== 0)
423 reloc_entry
->address
+= input_section
->output_offset
;
427 if (m32r_hi16_list
!= NULL
)
437 struct m32r_hi16
*next
;
439 /* Do the HI16 relocation. Note that we actually don't need
440 to know anything about the LO16 itself, except where to
441 find the low 16 bits of the addend needed by the LO16. */
442 insn
= bfd_get_32 (input_bfd
, l
->addr
);
443 vallo
= ((bfd_get_32 (input_bfd
, (bfd_byte
*) data
+ reloc_entry
->address
)
444 & 0xffff) ^ 0x8000) - 0x8000;
445 val
= ((insn
& 0xffff) << 16) + vallo
;
448 /* Reaccount for sign extension of low part. */
449 if ((val
& 0x8000) != 0)
452 insn
= (insn
&~ (bfd_vma
) 0xffff) | ((val
>> 16) & 0xffff);
453 bfd_put_32 (input_bfd
, (bfd_vma
) insn
, l
->addr
);
460 m32r_hi16_list
= NULL
;
463 /* Now do the LO16 reloc in the usual way.
464 ??? It would be nice to call bfd_elf_generic_reloc here,
465 but we have partial_inplace set. bfd_elf_generic_reloc will
466 pass the handling back to bfd_install_relocation which will install
467 a section relative addend which is wrong. */
468 return m32r_elf_generic_reloc (input_bfd
, reloc_entry
, symbol
, data
,
469 input_section
, output_bfd
, error_message
);
473 static reloc_howto_type m32r_elf_howto_table
[] =
475 /* This reloc does nothing. */
476 HOWTO (R_M32R_NONE
, /* type */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE
, /* pc_relative */
482 complain_overflow_bitfield
, /* complain_on_overflow */
483 bfd_elf_generic_reloc
, /* special_function */
484 "R_M32R_NONE", /* name */
485 FALSE
, /* partial_inplace */
488 FALSE
), /* pcrel_offset */
490 /* A 16 bit absolute relocation. */
491 HOWTO (R_M32R_16
, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE
, /* pc_relative */
497 complain_overflow_bitfield
, /* complain_on_overflow */
498 m32r_elf_generic_reloc
,/* special_function */
499 "R_M32R_16", /* name */
500 TRUE
, /* partial_inplace */
501 0xffff, /* src_mask */
502 0xffff, /* dst_mask */
503 FALSE
), /* pcrel_offset */
505 /* A 32 bit absolute relocation. */
506 HOWTO (R_M32R_32
, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 FALSE
, /* pc_relative */
512 complain_overflow_bitfield
, /* complain_on_overflow */
513 m32r_elf_generic_reloc
,/* special_function */
514 "R_M32R_32", /* name */
515 TRUE
, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE
), /* pcrel_offset */
520 /* A 24 bit address. */
521 HOWTO (R_M32R_24
, /* type */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
525 FALSE
, /* pc_relative */
527 complain_overflow_unsigned
, /* complain_on_overflow */
528 m32r_elf_generic_reloc
,/* special_function */
529 "R_M32R_24", /* name */
530 TRUE
, /* partial_inplace */
531 0xffffff, /* src_mask */
532 0xffffff, /* dst_mask */
533 FALSE
), /* pcrel_offset */
535 /* An PC Relative 10-bit relocation, shifted by 2.
536 This reloc is complicated because relocations are relative to pc & -4.
537 i.e. branches in the right insn slot use the address of the left insn
539 /* ??? It's not clear whether this should have partial_inplace set or not.
540 Branch relaxing in the assembler can store the addend in the insn,
541 and if bfd_install_relocation gets called the addend may get added
543 HOWTO (R_M32R_10_PCREL
, /* type */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
547 TRUE
, /* pc_relative */
549 complain_overflow_signed
, /* complain_on_overflow */
550 m32r_elf_10_pcrel_reloc
, /* special_function */
551 "R_M32R_10_PCREL", /* name */
552 FALSE
, /* partial_inplace */
555 TRUE
), /* pcrel_offset */
557 /* A relative 18 bit relocation, right shifted by 2. */
558 HOWTO (R_M32R_18_PCREL
, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 TRUE
, /* pc_relative */
564 complain_overflow_signed
, /* complain_on_overflow */
565 bfd_elf_generic_reloc
, /* special_function */
566 "R_M32R_18_PCREL", /* name */
567 FALSE
, /* partial_inplace */
568 0xffff, /* src_mask */
569 0xffff, /* dst_mask */
570 TRUE
), /* pcrel_offset */
572 /* A relative 26 bit relocation, right shifted by 2. */
573 /* ??? It's not clear whether this should have partial_inplace set or not.
574 Branch relaxing in the assembler can store the addend in the insn,
575 and if bfd_install_relocation gets called the addend may get added
577 HOWTO (R_M32R_26_PCREL
, /* type */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
581 TRUE
, /* pc_relative */
583 complain_overflow_signed
, /* complain_on_overflow */
584 bfd_elf_generic_reloc
, /* special_function */
585 "R_M32R_26_PCREL", /* name */
586 FALSE
, /* partial_inplace */
587 0xffffff, /* src_mask */
588 0xffffff, /* dst_mask */
589 TRUE
), /* pcrel_offset */
591 /* High 16 bits of address when lower 16 is or'd in. */
592 HOWTO (R_M32R_HI16_ULO
, /* type */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
596 FALSE
, /* pc_relative */
598 complain_overflow_dont
, /* complain_on_overflow */
599 m32r_elf_hi16_reloc
, /* special_function */
600 "R_M32R_HI16_ULO", /* name */
601 TRUE
, /* partial_inplace */
602 0x0000ffff, /* src_mask */
603 0x0000ffff, /* dst_mask */
604 FALSE
), /* pcrel_offset */
606 /* High 16 bits of address when lower 16 is added in. */
607 HOWTO (R_M32R_HI16_SLO
, /* type */
609 2, /* size (0 = byte, 1 = short, 2 = long) */
611 FALSE
, /* pc_relative */
613 complain_overflow_dont
, /* complain_on_overflow */
614 m32r_elf_hi16_reloc
, /* special_function */
615 "R_M32R_HI16_SLO", /* name */
616 TRUE
, /* partial_inplace */
617 0x0000ffff, /* src_mask */
618 0x0000ffff, /* dst_mask */
619 FALSE
), /* pcrel_offset */
621 /* Lower 16 bits of address. */
622 HOWTO (R_M32R_LO16
, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE
, /* pc_relative */
628 complain_overflow_dont
, /* complain_on_overflow */
629 m32r_elf_lo16_reloc
, /* special_function */
630 "R_M32R_LO16", /* name */
631 TRUE
, /* partial_inplace */
632 0x0000ffff, /* src_mask */
633 0x0000ffff, /* dst_mask */
634 FALSE
), /* pcrel_offset */
636 /* Small data area 16 bits offset. */
637 HOWTO (R_M32R_SDA16
, /* type */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
641 FALSE
, /* pc_relative */
643 complain_overflow_signed
, /* complain_on_overflow */
644 m32r_elf_sda16_reloc
, /* special_function */
645 "R_M32R_SDA16", /* name */
646 TRUE
, /* partial_inplace */ /* FIXME: correct? */
647 0x0000ffff, /* src_mask */
648 0x0000ffff, /* dst_mask */
649 FALSE
), /* pcrel_offset */
651 /* GNU extension to record C++ vtable hierarchy. */
652 HOWTO (R_M32R_GNU_VTINHERIT
, /* type */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE
, /* pc_relative */
658 complain_overflow_dont
, /* complain_on_overflow */
659 NULL
, /* special_function */
660 "R_M32R_GNU_VTINHERIT", /* name */
661 FALSE
, /* partial_inplace */
664 FALSE
), /* pcrel_offset */
666 /* GNU extension to record C++ vtable member usage. */
667 HOWTO (R_M32R_GNU_VTENTRY
, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE
, /* pc_relative */
673 complain_overflow_dont
, /* complain_on_overflow */
674 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
675 "R_M32R_GNU_VTENTRY", /* name */
676 FALSE
, /* partial_inplace */
679 FALSE
), /* pcrel_offset */
702 /* A 16 bit absolute relocation. */
703 HOWTO (R_M32R_16_RELA
, /* type */
705 1, /* size (0 = byte, 1 = short, 2 = long) */
707 FALSE
, /* pc_relative */
709 complain_overflow_bitfield
, /* complain_on_overflow */
710 bfd_elf_generic_reloc
, /* special_function */
711 "R_M32R_16_RELA", /* name */
712 FALSE
, /* partial_inplace */
713 0xffff, /* src_mask */
714 0xffff, /* dst_mask */
715 FALSE
), /* pcrel_offset */
717 /* A 32 bit absolute relocation. */
718 HOWTO (R_M32R_32_RELA
, /* type */
720 2, /* size (0 = byte, 1 = short, 2 = long) */
722 FALSE
, /* pc_relative */
724 complain_overflow_bitfield
, /* complain_on_overflow */
725 bfd_elf_generic_reloc
,/* special_function */
726 "R_M32R_32_RELA", /* name */
727 FALSE
, /* partial_inplace */
728 0xffffffff, /* src_mask */
729 0xffffffff, /* dst_mask */
730 FALSE
), /* pcrel_offset */
732 /* A 24 bit address. */
733 HOWTO (R_M32R_24_RELA
, /* type */
735 2, /* size (0 = byte, 1 = short, 2 = long) */
737 FALSE
, /* pc_relative */
739 complain_overflow_unsigned
, /* complain_on_overflow */
740 bfd_elf_generic_reloc
,/* special_function */
741 "R_M32R_24_RELA", /* name */
742 FALSE
, /* partial_inplace */
743 0xffffff, /* src_mask */
744 0xffffff, /* dst_mask */
745 FALSE
), /* pcrel_offset */
747 HOWTO (R_M32R_10_PCREL_RELA
, /* type */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
751 TRUE
, /* pc_relative */
753 complain_overflow_signed
, /* complain_on_overflow */
754 m32r_elf_10_pcrel_reloc
, /* special_function */
755 "R_M32R_10_PCREL_RELA",/* name */
756 FALSE
, /* partial_inplace */
759 TRUE
), /* pcrel_offset */
761 /* A relative 18 bit relocation, right shifted by 2. */
762 HOWTO (R_M32R_18_PCREL_RELA
, /* type */
764 2, /* size (0 = byte, 1 = short, 2 = long) */
766 TRUE
, /* pc_relative */
768 complain_overflow_signed
, /* complain_on_overflow */
769 bfd_elf_generic_reloc
, /* special_function */
770 "R_M32R_18_PCREL_RELA",/* name */
771 FALSE
, /* partial_inplace */
772 0xffff, /* src_mask */
773 0xffff, /* dst_mask */
774 TRUE
), /* pcrel_offset */
776 /* A relative 26 bit relocation, right shifted by 2. */
777 HOWTO (R_M32R_26_PCREL_RELA
, /* type */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
781 TRUE
, /* pc_relative */
783 complain_overflow_signed
, /* complain_on_overflow */
784 bfd_elf_generic_reloc
, /* special_function */
785 "R_M32R_26_PCREL_RELA",/* name */
786 FALSE
, /* partial_inplace */
787 0xffffff, /* src_mask */
788 0xffffff, /* dst_mask */
789 TRUE
), /* pcrel_offset */
791 /* High 16 bits of address when lower 16 is or'd in. */
792 HOWTO (R_M32R_HI16_ULO_RELA
, /* type */
794 2, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE
, /* pc_relative */
798 complain_overflow_dont
, /* complain_on_overflow */
799 bfd_elf_generic_reloc
, /* special_function */
800 "R_M32R_HI16_ULO_RELA",/* name */
801 FALSE
, /* partial_inplace */
802 0x0000ffff, /* src_mask */
803 0x0000ffff, /* dst_mask */
804 FALSE
), /* pcrel_offset */
806 /* High 16 bits of address when lower 16 is added in. */
807 HOWTO (R_M32R_HI16_SLO_RELA
, /* type */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 bfd_elf_generic_reloc
, /* special_function */
815 "R_M32R_HI16_SLO_RELA",/* name */
816 FALSE
, /* partial_inplace */
817 0x0000ffff, /* src_mask */
818 0x0000ffff, /* dst_mask */
819 FALSE
), /* pcrel_offset */
821 /* Lower 16 bits of address. */
822 HOWTO (R_M32R_LO16_RELA
, /* type */
824 2, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE
, /* pc_relative */
828 complain_overflow_dont
, /* complain_on_overflow */
829 bfd_elf_generic_reloc
, /* special_function */
830 "R_M32R_LO16_RELA", /* name */
831 FALSE
, /* partial_inplace */
832 0x0000ffff, /* src_mask */
833 0x0000ffff, /* dst_mask */
834 FALSE
), /* pcrel_offset */
836 /* Small data area 16 bits offset. */
837 HOWTO (R_M32R_SDA16_RELA
, /* type */
839 2, /* size (0 = byte, 1 = short, 2 = long) */
841 FALSE
, /* pc_relative */
843 complain_overflow_signed
, /* complain_on_overflow */
844 bfd_elf_generic_reloc
, /* special_function */
845 "R_M32R_SDA16_RELA", /* name */
846 TRUE
, /* partial_inplace */ /* FIXME: correct? */
847 0x0000ffff, /* src_mask */
848 0x0000ffff, /* dst_mask */
849 FALSE
), /* pcrel_offset */
851 /* GNU extension to record C++ vtable hierarchy. */
852 HOWTO (R_M32R_RELA_GNU_VTINHERIT
, /* type */
854 2, /* size (0 = byte, 1 = short, 2 = long) */
856 FALSE
, /* pc_relative */
858 complain_overflow_dont
, /* complain_on_overflow */
859 NULL
, /* special_function */
860 "R_M32R_RELA_GNU_VTINHERIT", /* name */
861 FALSE
, /* partial_inplace */
864 FALSE
), /* pcrel_offset */
866 /* GNU extension to record C++ vtable member usage. */
867 HOWTO (R_M32R_RELA_GNU_VTENTRY
, /* type */
869 2, /* size (0 = byte, 1 = short, 2 = long) */
871 FALSE
, /* pc_relative */
873 complain_overflow_dont
, /* complain_on_overflow */
874 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
875 "R_M32R_RELA_GNU_VTENTRY", /* name */
876 FALSE
, /* partial_inplace */
879 FALSE
), /* pcrel_offset */
881 /* A 32 bit PC relative relocation. */
882 HOWTO (R_M32R_REL32
, /* type */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
886 TRUE
, /* pc_relative */
888 complain_overflow_bitfield
, /* complain_on_overflow */
889 bfd_elf_generic_reloc
,/* special_function */
890 "R_M32R_REL32", /* name */
891 FALSE
, /* partial_inplace */
892 0xffffffff, /* src_mask */
893 0xffffffff, /* dst_mask */
894 TRUE
), /* pcrel_offset */
899 /* Like R_M32R_24, but referring to the GOT table entry for
901 HOWTO (R_M32R_GOT24
, /* type */
903 2, /* size (0 = byte, 1 = short, 2 = long) */
905 FALSE
, /* pc_relative */
907 complain_overflow_unsigned
, /* complain_on_overflow */
908 bfd_elf_generic_reloc
, /* special_function */
909 "R_M32R_GOT24", /* name */
910 FALSE
, /* partial_inplace */
911 0xffffff, /* src_mask */
912 0xffffff, /* dst_mask */
913 FALSE
), /* pcrel_offset */
915 /* Like R_M32R_PCREL, but referring to the procedure linkage table
916 entry for the symbol. */
917 HOWTO (R_M32R_26_PLTREL
, /* type */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
921 TRUE
, /* pc_relative */
923 complain_overflow_signed
, /* complain_on_overflow */
924 bfd_elf_generic_reloc
, /* special_function */
925 "R_M32R_26_PLTREL", /* name */
926 FALSE
, /* partial_inplace */
927 0xffffff, /* src_mask */
928 0xffffff, /* dst_mask */
929 TRUE
), /* pcrel_offset */
931 /* This is used only by the dynamic linker. The symbol should exist
932 both in the object being run and in some shared library. The
933 dynamic linker copies the data addressed by the symbol from the
934 shared library into the object, because the object being
935 run has to have the data at some particular address. */
936 HOWTO (R_M32R_COPY
, /* type */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
940 FALSE
, /* pc_relative */
942 complain_overflow_bitfield
, /* complain_on_overflow */
943 bfd_elf_generic_reloc
, /* special_function */
944 "R_M32R_COPY", /* name */
945 FALSE
, /* partial_inplace */
946 0xffffffff, /* src_mask */
947 0xffffffff, /* dst_mask */
948 FALSE
), /* pcrel_offset */
950 /* Like R_M32R_24, but used when setting global offset table
952 HOWTO (R_M32R_GLOB_DAT
, /* type */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
956 FALSE
, /* pc_relative */
958 complain_overflow_bitfield
, /* complain_on_overflow */
959 bfd_elf_generic_reloc
, /* special_function */
960 "R_M32R_GLOB_DAT", /* name */
961 FALSE
, /* partial_inplace */
962 0xffffffff, /* src_mask */
963 0xffffffff, /* dst_mask */
964 FALSE
), /* pcrel_offset */
966 /* Marks a procedure linkage table entry for a symbol. */
967 HOWTO (R_M32R_JMP_SLOT
, /* type */
969 2, /* size (0 = byte, 1 = short, 2 = long) */
971 FALSE
, /* pc_relative */
973 complain_overflow_bitfield
, /* complain_on_overflow */
974 bfd_elf_generic_reloc
, /* special_function */
975 "R_M32R_JMP_SLOT", /* name */
976 FALSE
, /* partial_inplace */
977 0xffffffff, /* src_mask */
978 0xffffffff, /* dst_mask */
979 FALSE
), /* pcrel_offset */
981 /* Used only by the dynamic linker. When the object is run, this
982 longword is set to the load address of the object, plus the
984 HOWTO (R_M32R_RELATIVE
, /* type */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
988 FALSE
, /* pc_relative */
990 complain_overflow_bitfield
, /* complain_on_overflow */
991 bfd_elf_generic_reloc
, /* special_function */
992 "R_M32R_RELATIVE", /* name */
993 FALSE
, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 FALSE
), /* pcrel_offset */
998 HOWTO (R_M32R_GOTOFF
, /* type */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE
, /* pc_relative */
1004 complain_overflow_bitfield
, /* complain_on_overflow */
1005 bfd_elf_generic_reloc
, /* special_function */
1006 "R_M32R_GOTOFF", /* name */
1007 FALSE
, /* partial_inplace */
1008 0xffffff, /* src_mask */
1009 0xffffff, /* dst_mask */
1010 FALSE
), /* pcrel_offset */
1012 /* An PC Relative 24-bit relocation used when setting PIC offset
1014 HOWTO (R_M32R_GOTPC24
, /* type */
1016 2, /* size (0 = byte, 1 = short, 2 = long) */
1018 TRUE
, /* pc_relative */
1020 complain_overflow_unsigned
, /* complain_on_overflow */
1021 bfd_elf_generic_reloc
, /* special_function */
1022 "R_M32R_GOTPC24", /* name */
1023 FALSE
, /* partial_inplace */
1024 0xffffff, /* src_mask */
1025 0xffffff, /* dst_mask */
1026 TRUE
), /* pcrel_offset */
1028 /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1030 HOWTO (R_M32R_GOT16_HI_ULO
, /* type */
1031 16, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 FALSE
, /* pc_relative */
1036 complain_overflow_dont
, /* complain_on_overflow */
1037 bfd_elf_generic_reloc
, /* special_function */
1038 "R_M32R_GOT16_HI_ULO", /* name */
1039 FALSE
, /* partial_inplace */
1040 0x0000ffff, /* src_mask */
1041 0x0000ffff, /* dst_mask */
1042 FALSE
), /* pcrel_offset */
1044 /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1046 HOWTO (R_M32R_GOT16_HI_SLO
, /* type */
1047 16, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1050 FALSE
, /* pc_relative */
1052 complain_overflow_dont
, /* complain_on_overflow */
1053 bfd_elf_generic_reloc
, /* special_function */
1054 "R_M32R_GOT16_HI_SLO", /* name */
1055 FALSE
, /* partial_inplace */
1056 0x0000ffff, /* src_mask */
1057 0x0000ffff, /* dst_mask */
1058 FALSE
), /* pcrel_offset */
1060 /* Like R_M32R_LO16, but referring to the GOT table entry for
1062 HOWTO (R_M32R_GOT16_LO
, /* type */
1064 2, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE
, /* pc_relative */
1068 complain_overflow_dont
, /* complain_on_overflow */
1069 bfd_elf_generic_reloc
, /* special_function */
1070 "R_M32R_GOT16_LO", /* name */
1071 FALSE
, /* partial_inplace */
1072 0x0000ffff, /* src_mask */
1073 0x0000ffff, /* dst_mask */
1074 FALSE
), /* pcrel_offset */
1076 /* An PC Relative relocation used when setting PIC offset table register.
1077 Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1079 HOWTO (R_M32R_GOTPC_HI_ULO
, /* type */
1080 16, /* rightshift */
1081 2, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE
, /* pc_relative */
1085 complain_overflow_dont
, /* complain_on_overflow */
1086 bfd_elf_generic_reloc
, /* special_function */
1087 "R_M32R_GOTPC_HI_ULO", /* name */
1088 FALSE
, /* partial_inplace */
1089 0x0000ffff, /* src_mask */
1090 0x0000ffff, /* dst_mask */
1091 TRUE
), /* pcrel_offset */
1093 /* An PC Relative relocation used when setting PIC offset table register.
1094 Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1096 HOWTO (R_M32R_GOTPC_HI_SLO
, /* type */
1097 16, /* rightshift */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1100 FALSE
, /* pc_relative */
1102 complain_overflow_dont
, /* complain_on_overflow */
1103 bfd_elf_generic_reloc
, /* special_function */
1104 "R_M32R_GOTPC_HI_SLO", /* name */
1105 FALSE
, /* partial_inplace */
1106 0x0000ffff, /* src_mask */
1107 0x0000ffff, /* dst_mask */
1108 TRUE
), /* pcrel_offset */
1110 /* An PC Relative relocation used when setting PIC offset table register.
1111 Like R_M32R_LO16, but referring to the GOT table entry for
1113 HOWTO (R_M32R_GOTPC_LO
, /* type */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 FALSE
, /* pc_relative */
1119 complain_overflow_dont
, /* complain_on_overflow */
1120 bfd_elf_generic_reloc
, /* special_function */
1121 "R_M32R_GOTPC_LO", /* name */
1122 FALSE
, /* partial_inplace */
1123 0x0000ffff, /* src_mask */
1124 0x0000ffff, /* dst_mask */
1125 TRUE
), /* pcrel_offset */
1127 HOWTO (R_M32R_GOTOFF_HI_ULO
, /* type */
1128 16, /* rightshift */
1129 2, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE
, /* pc_relative */
1133 complain_overflow_dont
, /* complain_on_overflow */
1134 bfd_elf_generic_reloc
, /* special_function */
1135 "R_M32R_GOTOFF_HI_ULO",/* name */
1136 FALSE
, /* partial_inplace */
1137 0x0000ffff, /* src_mask */
1138 0x0000ffff, /* dst_mask */
1139 FALSE
), /* pcrel_offset */
1141 HOWTO (R_M32R_GOTOFF_HI_SLO
, /* type */
1142 16, /* rightshift */
1143 2, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE
, /* pc_relative */
1147 complain_overflow_dont
, /* complain_on_overflow */
1148 bfd_elf_generic_reloc
, /* special_function */
1149 "R_M32R_GOTOFF_HI_SLO",/* name */
1150 FALSE
, /* partial_inplace */
1151 0x0000ffff, /* src_mask */
1152 0x0000ffff, /* dst_mask */
1153 FALSE
), /* pcrel_offset */
1155 HOWTO (R_M32R_GOTOFF_LO
, /* type */
1157 2, /* size (0 = byte, 1 = short, 2 = long) */
1159 FALSE
, /* pc_relative */
1161 complain_overflow_dont
, /* complain_on_overflow */
1162 bfd_elf_generic_reloc
, /* special_function */
1163 "R_M32R_GOTOFF_LO", /* name */
1164 FALSE
, /* partial_inplace */
1165 0x0000ffff, /* src_mask */
1166 0x0000ffff, /* dst_mask */
1167 FALSE
), /* pcrel_offset */
1170 /* Map BFD reloc types to M32R ELF reloc types. */
1172 struct m32r_reloc_map
1174 bfd_reloc_code_real_type bfd_reloc_val
;
1175 unsigned char elf_reloc_val
;
1178 #ifdef USE_M32R_OLD_RELOC
1179 static const struct m32r_reloc_map m32r_reloc_map_old
[] =
1181 { BFD_RELOC_NONE
, R_M32R_NONE
},
1182 { BFD_RELOC_16
, R_M32R_16
},
1183 { BFD_RELOC_32
, R_M32R_32
},
1184 { BFD_RELOC_M32R_24
, R_M32R_24
},
1185 { BFD_RELOC_M32R_10_PCREL
, R_M32R_10_PCREL
},
1186 { BFD_RELOC_M32R_18_PCREL
, R_M32R_18_PCREL
},
1187 { BFD_RELOC_M32R_26_PCREL
, R_M32R_26_PCREL
},
1188 { BFD_RELOC_M32R_HI16_ULO
, R_M32R_HI16_ULO
},
1189 { BFD_RELOC_M32R_HI16_SLO
, R_M32R_HI16_SLO
},
1190 { BFD_RELOC_M32R_LO16
, R_M32R_LO16
},
1191 { BFD_RELOC_M32R_SDA16
, R_M32R_SDA16
},
1192 { BFD_RELOC_VTABLE_INHERIT
, R_M32R_GNU_VTINHERIT
},
1193 { BFD_RELOC_VTABLE_ENTRY
, R_M32R_GNU_VTENTRY
},
1196 static const struct m32r_reloc_map m32r_reloc_map
[] =
1198 { BFD_RELOC_NONE
, R_M32R_NONE
},
1199 { BFD_RELOC_16
, R_M32R_16_RELA
},
1200 { BFD_RELOC_32
, R_M32R_32_RELA
},
1201 { BFD_RELOC_M32R_24
, R_M32R_24_RELA
},
1202 { BFD_RELOC_M32R_10_PCREL
, R_M32R_10_PCREL_RELA
},
1203 { BFD_RELOC_M32R_18_PCREL
, R_M32R_18_PCREL_RELA
},
1204 { BFD_RELOC_M32R_26_PCREL
, R_M32R_26_PCREL_RELA
},
1205 { BFD_RELOC_M32R_HI16_ULO
, R_M32R_HI16_ULO_RELA
},
1206 { BFD_RELOC_M32R_HI16_SLO
, R_M32R_HI16_SLO_RELA
},
1207 { BFD_RELOC_M32R_LO16
, R_M32R_LO16_RELA
},
1208 { BFD_RELOC_M32R_SDA16
, R_M32R_SDA16_RELA
},
1209 { BFD_RELOC_VTABLE_INHERIT
, R_M32R_RELA_GNU_VTINHERIT
},
1210 { BFD_RELOC_VTABLE_ENTRY
, R_M32R_RELA_GNU_VTENTRY
},
1211 { BFD_RELOC_32_PCREL
, R_M32R_REL32
},
1213 { BFD_RELOC_M32R_GOT24
, R_M32R_GOT24
},
1214 { BFD_RELOC_M32R_26_PLTREL
, R_M32R_26_PLTREL
},
1215 { BFD_RELOC_M32R_COPY
, R_M32R_COPY
},
1216 { BFD_RELOC_M32R_GLOB_DAT
, R_M32R_GLOB_DAT
},
1217 { BFD_RELOC_M32R_JMP_SLOT
, R_M32R_JMP_SLOT
},
1218 { BFD_RELOC_M32R_RELATIVE
, R_M32R_RELATIVE
},
1219 { BFD_RELOC_M32R_GOTOFF
, R_M32R_GOTOFF
},
1220 { BFD_RELOC_M32R_GOTPC24
, R_M32R_GOTPC24
},
1221 { BFD_RELOC_M32R_GOT16_HI_ULO
, R_M32R_GOT16_HI_ULO
},
1222 { BFD_RELOC_M32R_GOT16_HI_SLO
, R_M32R_GOT16_HI_SLO
},
1223 { BFD_RELOC_M32R_GOT16_LO
, R_M32R_GOT16_LO
},
1224 { BFD_RELOC_M32R_GOTPC_HI_ULO
, R_M32R_GOTPC_HI_ULO
},
1225 { BFD_RELOC_M32R_GOTPC_HI_SLO
, R_M32R_GOTPC_HI_SLO
},
1226 { BFD_RELOC_M32R_GOTPC_LO
, R_M32R_GOTPC_LO
},
1227 { BFD_RELOC_M32R_GOTOFF_HI_ULO
, R_M32R_GOTOFF_HI_ULO
},
1228 { BFD_RELOC_M32R_GOTOFF_HI_SLO
, R_M32R_GOTOFF_HI_SLO
},
1229 { BFD_RELOC_M32R_GOTOFF_LO
, R_M32R_GOTOFF_LO
},
1233 static reloc_howto_type
*
1234 bfd_elf32_bfd_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1235 bfd_reloc_code_real_type code
)
1239 #ifdef USE_M32R_OLD_RELOC
1241 i
< sizeof (m32r_reloc_map_old
) / sizeof (struct m32r_reloc_map
);
1243 if (m32r_reloc_map_old
[i
].bfd_reloc_val
== code
)
1244 return &m32r_elf_howto_table
[m32r_reloc_map_old
[i
].elf_reloc_val
];
1246 #else /* ! USE_M32R_OLD_RELOC */
1249 i
< sizeof (m32r_reloc_map
) / sizeof (struct m32r_reloc_map
);
1251 if (m32r_reloc_map
[i
].bfd_reloc_val
== code
)
1252 return &m32r_elf_howto_table
[m32r_reloc_map
[i
].elf_reloc_val
];
1258 static reloc_howto_type
*
1259 bfd_elf32_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1265 i
< sizeof (m32r_elf_howto_table
) / sizeof (m32r_elf_howto_table
[0]);
1267 if (m32r_elf_howto_table
[i
].name
!= NULL
1268 && strcasecmp (m32r_elf_howto_table
[i
].name
, r_name
) == 0)
1269 return &m32r_elf_howto_table
[i
];
1274 /* Set the howto pointer for an M32R ELF reloc. */
1277 m32r_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
,
1279 Elf_Internal_Rela
*dst
)
1281 unsigned int r_type
;
1283 r_type
= ELF32_R_TYPE (dst
->r_info
);
1284 BFD_ASSERT (ELF32_R_TYPE(dst
->r_info
) <= (unsigned int) R_M32R_GNU_VTENTRY
);
1285 cache_ptr
->howto
= &m32r_elf_howto_table
[r_type
];
1289 m32r_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1291 Elf_Internal_Rela
*dst
)
1293 BFD_ASSERT ((ELF32_R_TYPE(dst
->r_info
) == (unsigned int) R_M32R_NONE
)
1294 || ((ELF32_R_TYPE(dst
->r_info
) > (unsigned int) R_M32R_GNU_VTENTRY
)
1295 && (ELF32_R_TYPE(dst
->r_info
) < (unsigned int) R_M32R_max
)));
1296 cache_ptr
->howto
= &m32r_elf_howto_table
[ELF32_R_TYPE(dst
->r_info
)];
1300 /* Given a BFD section, try to locate the corresponding ELF section
1304 _bfd_m32r_elf_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
1308 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
1310 *retval
= SHN_M32R_SCOMMON
;
1316 /* M32R ELF uses two common sections. One is the usual one, and the other
1317 is for small objects. All the small objects are kept together, and then
1318 referenced via one register, which yields faster assembler code. It is
1319 up to the compiler to emit an instruction to load the register with
1320 _SDA_BASE. This is what we use for the small common section. This
1321 approach is copied from elf32-mips.c. */
1322 static asection m32r_elf_scom_section
;
1323 static asymbol m32r_elf_scom_symbol
;
1324 static asymbol
*m32r_elf_scom_symbol_ptr
;
1326 /* Handle the special M32R section numbers that a symbol may use. */
1329 _bfd_m32r_elf_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
1331 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
1333 switch (elfsym
->internal_elf_sym
.st_shndx
)
1335 case SHN_M32R_SCOMMON
:
1336 if (m32r_elf_scom_section
.name
== NULL
)
1338 /* Initialize the small common section. */
1339 m32r_elf_scom_section
.name
= ".scommon";
1340 m32r_elf_scom_section
.flags
= SEC_IS_COMMON
;
1341 m32r_elf_scom_section
.output_section
= &m32r_elf_scom_section
;
1342 m32r_elf_scom_section
.symbol
= &m32r_elf_scom_symbol
;
1343 m32r_elf_scom_section
.symbol_ptr_ptr
= &m32r_elf_scom_symbol_ptr
;
1344 m32r_elf_scom_symbol
.name
= ".scommon";
1345 m32r_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
1346 m32r_elf_scom_symbol
.section
= &m32r_elf_scom_section
;
1347 m32r_elf_scom_symbol_ptr
= &m32r_elf_scom_symbol
;
1349 asym
->section
= &m32r_elf_scom_section
;
1350 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
1355 /* Hook called by the linker routine which adds symbols from an object
1356 file. We must handle the special M32R section numbers here.
1357 We also keep watching for whether we need to create the sdata special
1361 m32r_elf_add_symbol_hook (bfd
*abfd
,
1362 struct bfd_link_info
*info
,
1363 Elf_Internal_Sym
*sym
,
1365 flagword
*flagsp ATTRIBUTE_UNUSED
,
1369 if (! info
->relocatable
1370 && (*namep
)[0] == '_' && (*namep
)[1] == 'S'
1371 && strcmp (*namep
, "_SDA_BASE_") == 0
1372 && is_elf_hash_table (info
->hash
))
1374 /* This is simpler than using _bfd_elf_create_linker_section
1375 (our needs are simpler than ppc's needs). Also
1376 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1377 section already exists a new one is created that follows it which
1378 screws of _SDA_BASE_ address calcs because output_offset != 0. */
1379 struct elf_link_hash_entry
*h
;
1380 struct bfd_link_hash_entry
*bh
;
1381 asection
*s
= bfd_get_section_by_name (abfd
, ".sdata");
1383 /* The following code was cobbled from elf32-ppc.c and elflink.c. */
1386 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1387 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1389 s
= bfd_make_section_anyway_with_flags (abfd
, ".sdata",
1393 bfd_set_section_alignment (abfd
, s
, 2);
1396 bh
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_",
1397 FALSE
, FALSE
, FALSE
);
1399 if ((bh
== NULL
|| bh
->type
== bfd_link_hash_undefined
)
1400 && !(_bfd_generic_link_add_one_symbol (info
,
1408 get_elf_backend_data (abfd
)->collect
,
1411 h
= (struct elf_link_hash_entry
*) bh
;
1412 h
->type
= STT_OBJECT
;
1415 switch (sym
->st_shndx
)
1417 case SHN_M32R_SCOMMON
:
1418 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
1419 (*secp
)->flags
|= SEC_IS_COMMON
;
1420 *valp
= sym
->st_size
;
1427 /* We have to figure out the SDA_BASE value, so that we can adjust the
1428 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
1429 BFD. If we can't find it, we're stuck. We cache it in the ELF
1430 target data. We don't need to adjust the symbol value for an
1431 external symbol if we are producing relocatable output. */
1433 static bfd_reloc_status_type
1434 m32r_elf_final_sda_base (bfd
*output_bfd
,
1435 struct bfd_link_info
*info
,
1436 const char **error_message
,
1439 if (elf_gp (output_bfd
) == 0)
1441 struct bfd_link_hash_entry
*h
;
1443 h
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_", FALSE
, FALSE
, TRUE
);
1444 if (h
!= NULL
&& h
->type
== bfd_link_hash_defined
)
1445 elf_gp (output_bfd
) = (h
->u
.def
.value
1446 + h
->u
.def
.section
->output_section
->vma
1447 + h
->u
.def
.section
->output_offset
);
1450 /* Only get the error once. */
1451 *psb
= elf_gp (output_bfd
) = 4;
1453 (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1454 return bfd_reloc_dangerous
;
1457 *psb
= elf_gp (output_bfd
);
1458 return bfd_reloc_ok
;
1461 /* Return size of a PLT entry. */
1462 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1464 /* The m32r linker needs to keep track of the number of relocs that it
1465 decides to copy in check_relocs for each symbol. This is so that
1466 it can discard PC relative relocs if it doesn't need them when
1467 linking with -Bsymbolic. We store the information in a field
1468 extending the regular ELF linker hash table. */
1470 /* This structure keeps track of the number of PC relative relocs we
1471 have copied for a given symbol. */
1473 struct elf_m32r_pcrel_relocs_copied
1476 struct elf_m32r_pcrel_relocs_copied
*next
;
1477 /* A section in dynobj. */
1479 /* Number of relocs copied in this section. */
1480 bfd_size_type count
;
1483 /* The sh linker needs to keep track of the number of relocs that it
1484 decides to copy as dynamic relocs in check_relocs for each symbol.
1485 This is so that it can later discard them if they are found to be
1486 unnecessary. We store the information in a field extending the
1487 regular ELF linker hash table. */
1489 struct elf_m32r_dyn_relocs
1491 struct elf_m32r_dyn_relocs
*next
;
1493 /* The input section of the reloc. */
1496 /* Total number of relocs copied for the input section. */
1497 bfd_size_type count
;
1499 /* Number of pc-relative relocs copied for the input section. */
1500 bfd_size_type pc_count
;
1504 /* m32r ELF linker hash entry. */
1506 struct elf_m32r_link_hash_entry
1508 struct elf_link_hash_entry root
;
1510 /* Track dynamic relocs copied for this symbol. */
1511 struct elf_m32r_dyn_relocs
*dyn_relocs
;
1514 /* m32r ELF linker hash table. */
1516 struct elf_m32r_link_hash_table
1518 struct elf_link_hash_table root
;
1520 /* Short-cuts to get to dynamic linker sections. */
1529 /* Small local sym cache. */
1530 struct sym_cache sym_cache
;
1533 /* Traverse an m32r ELF linker hash table. */
1535 #define m32r_elf_link_hash_traverse(table, func, info) \
1536 (elf_link_hash_traverse \
1538 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
1541 /* Get the m32r ELF linker hash table from a link_info structure. */
1543 #define m32r_elf_hash_table(p) \
1544 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1545 == M32R_ELF_DATA ? ((struct elf_m32r_link_hash_table *) ((p)->hash)) : NULL)
1547 /* Create an entry in an m32r ELF linker hash table. */
1549 static struct bfd_hash_entry
*
1550 m32r_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1551 struct bfd_hash_table
*table
,
1554 struct elf_m32r_link_hash_entry
*ret
=
1555 (struct elf_m32r_link_hash_entry
*) entry
;
1557 /* Allocate the structure if it has not already been allocated by a
1560 ret
= bfd_hash_allocate (table
,
1561 sizeof (struct elf_m32r_link_hash_entry
));
1565 /* Call the allocation method of the superclass. */
1566 ret
= ((struct elf_m32r_link_hash_entry
*)
1567 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
1571 struct elf_m32r_link_hash_entry
*eh
;
1573 eh
= (struct elf_m32r_link_hash_entry
*) ret
;
1574 eh
->dyn_relocs
= NULL
;
1577 return (struct bfd_hash_entry
*) ret
;
1580 /* Create an m32r ELF linker hash table. */
1582 static struct bfd_link_hash_table
*
1583 m32r_elf_link_hash_table_create (bfd
*abfd
)
1585 struct elf_m32r_link_hash_table
*ret
;
1586 bfd_size_type amt
= sizeof (struct elf_m32r_link_hash_table
);
1588 ret
= bfd_malloc (amt
);
1592 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
1593 m32r_elf_link_hash_newfunc
,
1594 sizeof (struct elf_m32r_link_hash_entry
),
1602 ret
->sgotplt
= NULL
;
1603 ret
->srelgot
= NULL
;
1605 ret
->srelplt
= NULL
;
1606 ret
->sdynbss
= NULL
;
1607 ret
->srelbss
= NULL
;
1608 ret
->sym_cache
.abfd
= NULL
;
1610 return &ret
->root
.root
;
1613 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1614 shortcuts to them in our hash table. */
1617 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
1619 struct elf_m32r_link_hash_table
*htab
;
1621 if (! _bfd_elf_create_got_section (dynobj
, info
))
1624 htab
= m32r_elf_hash_table (info
);
1628 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
1629 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
1630 htab
->srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1631 if (! htab
->sgot
|| ! htab
->sgotplt
|| ! htab
->srelgot
)
1637 /* Create dynamic sections when linking against a dynamic object. */
1640 m32r_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
1642 struct elf_m32r_link_hash_table
*htab
;
1643 flagword flags
, pltflags
;
1645 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1646 int ptralign
= 2; /* 32bit */
1648 htab
= m32r_elf_hash_table (info
);
1652 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1653 .rel[a].bss sections. */
1654 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
1655 | SEC_LINKER_CREATED
);
1658 pltflags
|= SEC_CODE
;
1659 if (bed
->plt_not_loaded
)
1660 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
1661 if (bed
->plt_readonly
)
1662 pltflags
|= SEC_READONLY
;
1664 s
= bfd_make_section_with_flags (abfd
, ".plt", pltflags
);
1667 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
1670 if (bed
->want_plt_sym
)
1672 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1674 struct bfd_link_hash_entry
*bh
= NULL
;
1675 struct elf_link_hash_entry
*h
;
1677 if (! (_bfd_generic_link_add_one_symbol
1678 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
1679 (bfd_vma
) 0, NULL
, FALSE
,
1680 get_elf_backend_data (abfd
)->collect
, &bh
)))
1682 h
= (struct elf_link_hash_entry
*) bh
;
1684 h
->type
= STT_OBJECT
;
1685 htab
->root
.hplt
= h
;
1688 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
1692 s
= bfd_make_section_with_flags (abfd
,
1693 bed
->default_use_rela_p
? ".rela.plt" : ".rel.plt",
1694 flags
| SEC_READONLY
);
1697 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1700 if (htab
->sgot
== NULL
1701 && ! create_got_section (abfd
, info
))
1705 const char *secname
;
1710 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1712 secflags
= bfd_get_section_flags (abfd
, sec
);
1713 if ((secflags
& (SEC_DATA
| SEC_LINKER_CREATED
))
1714 || ((secflags
& SEC_HAS_CONTENTS
) != SEC_HAS_CONTENTS
))
1716 secname
= bfd_get_section_name (abfd
, sec
);
1717 relname
= bfd_malloc ((bfd_size_type
) strlen (secname
) + 6);
1718 strcpy (relname
, ".rela");
1719 strcat (relname
, secname
);
1720 if (bfd_get_section_by_name (abfd
, secname
))
1722 s
= bfd_make_section_with_flags (abfd
, relname
,
1723 flags
| SEC_READONLY
);
1725 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1730 if (bed
->want_dynbss
)
1732 /* The .dynbss section is a place to put symbols which are defined
1733 by dynamic objects, are referenced by regular objects, and are
1734 not functions. We must allocate space for them in the process
1735 image and use a R_*_COPY reloc to tell the dynamic linker to
1736 initialize them at run time. The linker script puts the .dynbss
1737 section into the .bss section of the final image. */
1738 s
= bfd_make_section_with_flags (abfd
, ".dynbss",
1739 SEC_ALLOC
| SEC_LINKER_CREATED
);
1743 /* The .rel[a].bss section holds copy relocs. This section is not
1744 normally needed. We need to create it here, though, so that the
1745 linker will map it to an output section. We can't just create it
1746 only if we need it, because we will not know whether we need it
1747 until we have seen all the input files, and the first time the
1748 main linker code calls BFD after examining all the input files
1749 (size_dynamic_sections) the input sections have already been
1750 mapped to the output sections. If the section turns out not to
1751 be needed, we can discard it later. We will never need this
1752 section when generating a shared object, since they do not use
1756 s
= bfd_make_section_with_flags (abfd
,
1757 (bed
->default_use_rela_p
1758 ? ".rela.bss" : ".rel.bss"),
1759 flags
| SEC_READONLY
);
1762 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
1770 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1773 m32r_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
1774 struct elf_link_hash_entry
*dir
,
1775 struct elf_link_hash_entry
*ind
)
1777 struct elf_m32r_link_hash_entry
* edir
;
1778 struct elf_m32r_link_hash_entry
* eind
;
1780 edir
= (struct elf_m32r_link_hash_entry
*) dir
;
1781 eind
= (struct elf_m32r_link_hash_entry
*) ind
;
1783 if (eind
->dyn_relocs
!= NULL
)
1785 if (edir
->dyn_relocs
!= NULL
)
1787 struct elf_m32r_dyn_relocs
**pp
;
1788 struct elf_m32r_dyn_relocs
*p
;
1790 /* Add reloc counts against the indirect sym to the direct sym
1791 list. Merge any entries against the same section. */
1792 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
1794 struct elf_m32r_dyn_relocs
*q
;
1796 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
1797 if (q
->sec
== p
->sec
)
1799 q
->pc_count
+= p
->pc_count
;
1800 q
->count
+= p
->count
;
1807 *pp
= edir
->dyn_relocs
;
1810 edir
->dyn_relocs
= eind
->dyn_relocs
;
1811 eind
->dyn_relocs
= NULL
;
1814 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
1818 /* Adjust a symbol defined by a dynamic object and referenced by a
1819 regular object. The current definition is in some section of the
1820 dynamic object, but we're not including those sections. We have to
1821 change the definition to something the rest of the link can
1825 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1826 struct elf_link_hash_entry
*h
)
1828 struct elf_m32r_link_hash_table
*htab
;
1829 struct elf_m32r_link_hash_entry
*eh
;
1830 struct elf_m32r_dyn_relocs
*p
;
1835 printf ("m32r_elf_adjust_dynamic_symbol()\n");
1838 dynobj
= elf_hash_table (info
)->dynobj
;
1840 /* Make sure we know what is going on here. */
1841 BFD_ASSERT (dynobj
!= NULL
1843 || h
->u
.weakdef
!= NULL
1846 && !h
->def_regular
)));
1848 /* If this is a function, put it in the procedure linkage table. We
1849 will fill in the contents of the procedure linkage table later,
1850 when we know the address of the .got section. */
1851 if (h
->type
== STT_FUNC
1857 && h
->root
.type
!= bfd_link_hash_undefweak
1858 && h
->root
.type
!= bfd_link_hash_undefined
)
1860 /* This case can occur if we saw a PLT reloc in an input
1861 file, but the symbol was never referred to by a dynamic
1862 object. In such a case, we don't actually need to build
1863 a procedure linkage table, and we can just do a PCREL
1865 h
->plt
.offset
= (bfd_vma
) -1;
1872 h
->plt
.offset
= (bfd_vma
) -1;
1874 /* If this is a weak symbol, and there is a real definition, the
1875 processor independent code will have arranged for us to see the
1876 real definition first, and we can just use the same value. */
1877 if (h
->u
.weakdef
!= NULL
)
1879 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1880 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1881 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1882 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1886 /* This is a reference to a symbol defined by a dynamic object which
1887 is not a function. */
1889 /* If we are creating a shared library, we must presume that the
1890 only references to the symbol are via the global offset table.
1891 For such cases we need not do anything here; the relocations will
1892 be handled correctly by relocate_section. */
1896 /* If there are no references to this symbol that do not use the
1897 GOT, we don't need to generate a copy reloc. */
1898 if (!h
->non_got_ref
)
1901 /* If -z nocopyreloc was given, we won't generate them either. */
1902 if (info
->nocopyreloc
)
1908 eh
= (struct elf_m32r_link_hash_entry
*) h
;
1909 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1911 s
= p
->sec
->output_section
;
1912 if (s
!= NULL
&& (s
->flags
& (SEC_READONLY
| SEC_HAS_CONTENTS
)) != 0)
1916 /* If we didn't find any dynamic relocs in sections which needs the
1917 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1927 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
1928 h
->root
.root
.string
);
1932 /* We must allocate the symbol in our .dynbss section, which will
1933 become part of the .bss section of the executable. There will be
1934 an entry for this symbol in the .dynsym section. The dynamic
1935 object will contain position independent code, so all references
1936 from the dynamic object to this symbol will go through the global
1937 offset table. The dynamic linker will use the .dynsym entry to
1938 determine the address it must put in the global offset table, so
1939 both the dynamic object and the regular object will refer to the
1940 same memory location for the variable. */
1942 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
);
1991 eh
= (struct elf_m32r_link_hash_entry
*) h
;
1993 if (htab
->root
.dynamic_sections_created
1994 && h
->plt
.refcount
> 0)
1996 /* Make sure this symbol is output as a dynamic symbol.
1997 Undefined weak syms won't yet be marked as dynamic. */
1998 if (h
->dynindx
== -1
1999 && !h
->forced_local
)
2001 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2005 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
2007 asection
*s
= htab
->splt
;
2009 /* If this is the first .plt entry, make room for the special
2012 s
->size
+= PLT_ENTRY_SIZE
;
2014 h
->plt
.offset
= s
->size
;
2016 /* If this symbol is not defined in a regular file, and we are
2017 not generating a shared library, then set the symbol to this
2018 location in the .plt. This is required to make function
2019 pointers compare as equal between the normal executable and
2020 the shared library. */
2024 h
->root
.u
.def
.section
= s
;
2025 h
->root
.u
.def
.value
= h
->plt
.offset
;
2028 /* Make room for this entry. */
2029 s
->size
+= PLT_ENTRY_SIZE
;
2031 /* We also need to make an entry in the .got.plt section, which
2032 will be placed in the .got section by the linker script. */
2033 htab
->sgotplt
->size
+= 4;
2035 /* We also need to make an entry in the .rel.plt section. */
2036 htab
->srelplt
->size
+= sizeof (Elf32_External_Rela
);
2040 h
->plt
.offset
= (bfd_vma
) -1;
2046 h
->plt
.offset
= (bfd_vma
) -1;
2050 if (h
->got
.refcount
> 0)
2055 /* Make sure this symbol is output as a dynamic symbol.
2056 Undefined weak syms won't yet be marked as dynamic. */
2057 if (h
->dynindx
== -1
2058 && !h
->forced_local
)
2060 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2066 h
->got
.offset
= s
->size
;
2068 dyn
= htab
->root
.dynamic_sections_created
;
2069 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
))
2070 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
2073 h
->got
.offset
= (bfd_vma
) -1;
2075 if (eh
->dyn_relocs
== NULL
)
2078 /* In the shared -Bsymbolic case, discard space allocated for
2079 dynamic pc-relative relocs against symbols which turn out to be
2080 defined in regular objects. For the normal shared case, discard
2081 space for pc-relative relocs that have become local due to symbol
2082 visibility changes. */
2090 struct elf_m32r_dyn_relocs
**pp
;
2092 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2094 p
->count
-= p
->pc_count
;
2103 /* Also discard relocs on undefined weak syms with non-default
2105 if (eh
->dyn_relocs
!= NULL
2106 && h
->root
.type
== bfd_link_hash_undefweak
)
2108 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2109 eh
->dyn_relocs
= NULL
;
2111 /* Make sure undefined weak symbols are output as a dynamic
2113 else if (h
->dynindx
== -1
2114 && !h
->forced_local
)
2116 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2123 /* For the non-shared case, discard space for relocs against
2124 symbols which turn out to need copy relocs or are not
2130 || (htab
->root
.dynamic_sections_created
2131 && (h
->root
.type
== bfd_link_hash_undefweak
2132 || h
->root
.type
== bfd_link_hash_undefined
))))
2134 /* Make sure this symbol is output as a dynamic symbol.
2135 Undefined weak syms won't yet be marked as dynamic. */
2136 if (h
->dynindx
== -1
2137 && !h
->forced_local
)
2139 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2143 /* If that succeeded, we know we'll be keeping all the
2145 if (h
->dynindx
!= -1)
2149 eh
->dyn_relocs
= NULL
;
2154 /* Finally, allocate space. */
2155 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2157 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2158 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2164 /* Find any dynamic relocs that apply to read-only sections. */
2167 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2169 struct elf_m32r_link_hash_entry
*eh
;
2170 struct elf_m32r_dyn_relocs
*p
;
2172 if (h
->root
.type
== bfd_link_hash_warning
)
2173 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2175 eh
= (struct elf_m32r_link_hash_entry
*) h
;
2176 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2178 asection
*s
= p
->sec
->output_section
;
2180 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2182 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2184 info
->flags
|= DF_TEXTREL
;
2186 /* Not an error, just cut short the traversal. */
2193 /* Set the sizes of the dynamic sections. */
2196 m32r_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2197 struct bfd_link_info
*info
)
2199 struct elf_m32r_link_hash_table
*htab
;
2206 printf ("m32r_elf_size_dynamic_sections()\n");
2209 htab
= m32r_elf_hash_table (info
);
2213 dynobj
= htab
->root
.dynobj
;
2214 BFD_ASSERT (dynobj
!= NULL
);
2216 if (htab
->root
.dynamic_sections_created
)
2218 /* Set the contents of the .interp section to the interpreter. */
2219 if (info
->executable
)
2221 s
= bfd_get_section_by_name (dynobj
, ".interp");
2222 BFD_ASSERT (s
!= NULL
);
2223 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2224 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2228 /* Set up .got offsets for local syms, and space for local dynamic
2230 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2232 bfd_signed_vma
*local_got
;
2233 bfd_signed_vma
*end_local_got
;
2234 bfd_size_type locsymcount
;
2235 Elf_Internal_Shdr
*symtab_hdr
;
2238 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2241 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2243 struct elf_m32r_dyn_relocs
*p
;
2245 for (p
= ((struct elf_m32r_dyn_relocs
*)
2246 elf_section_data (s
)->local_dynrel
);
2250 if (! bfd_is_abs_section (p
->sec
)
2251 && bfd_is_abs_section (p
->sec
->output_section
))
2253 /* Input section has been discarded, either because
2254 it is a copy of a linkonce section or due to
2255 linker script /DISCARD/, so we'll be discarding
2258 else if (p
->count
!= 0)
2260 srel
= elf_section_data (p
->sec
)->sreloc
;
2261 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2262 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2263 info
->flags
|= DF_TEXTREL
;
2268 local_got
= elf_local_got_refcounts (ibfd
);
2272 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2273 locsymcount
= symtab_hdr
->sh_info
;
2274 end_local_got
= local_got
+ locsymcount
;
2276 srel
= htab
->srelgot
;
2277 for (; local_got
< end_local_got
; ++local_got
)
2281 *local_got
= s
->size
;
2284 srel
->size
+= sizeof (Elf32_External_Rela
);
2287 *local_got
= (bfd_vma
) -1;
2291 /* Allocate global sym .plt and .got entries, and space for global
2292 sym dynamic relocs. */
2293 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2295 /* We now have determined the sizes of the various dynamic sections.
2296 Allocate memory for them. */
2298 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2300 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2305 || s
== htab
->sgotplt
2306 || s
== htab
->sdynbss
)
2308 /* Strip this section if we don't need it; see the
2311 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2313 if (s
->size
!= 0 && s
!= htab
->srelplt
)
2316 /* We use the reloc_count field as a counter if we need
2317 to copy relocs into the output file. */
2321 /* It's not one of our sections, so don't allocate space. */
2326 /* If we don't need this section, strip it from the
2327 output file. This is mostly to handle .rela.bss and
2328 .rela.plt. We must create both sections in
2329 create_dynamic_sections, because they must be created
2330 before the linker maps input sections to output
2331 sections. The linker does that before
2332 adjust_dynamic_symbol is called, and it is that
2333 function which decides whether anything needs to go
2334 into these sections. */
2335 s
->flags
|= SEC_EXCLUDE
;
2339 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2342 /* Allocate memory for the section contents. We use bfd_zalloc
2343 here in case unused entries are not reclaimed before the
2344 section's contents are written out. This should not happen,
2345 but this way if it does, we get a R_M32R_NONE reloc instead
2347 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2348 if (s
->contents
== NULL
)
2352 if (htab
->root
.dynamic_sections_created
)
2354 /* Add some entries to the .dynamic section. We fill in the
2355 values later, in m32r_elf_finish_dynamic_sections, but we
2356 must add the entries now so that we get the correct size for
2357 the .dynamic section. The DT_DEBUG entry is filled in by the
2358 dynamic linker and used by the debugger. */
2359 #define add_dynamic_entry(TAG, VAL) \
2360 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2362 if (info
->executable
)
2364 if (! add_dynamic_entry (DT_DEBUG
, 0))
2368 if (htab
->splt
->size
!= 0)
2370 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2371 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2372 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2373 || ! add_dynamic_entry (DT_JMPREL
, 0))
2379 if (! add_dynamic_entry (DT_RELA
, 0)
2380 || ! add_dynamic_entry (DT_RELASZ
, 0)
2381 || ! add_dynamic_entry (DT_RELAENT
,
2382 sizeof (Elf32_External_Rela
)))
2385 /* If any dynamic relocs apply to a read-only section,
2386 then we need a DT_TEXTREL entry. */
2387 if ((info
->flags
& DF_TEXTREL
) == 0)
2388 elf_link_hash_traverse (&htab
->root
, readonly_dynrelocs
,
2391 if ((info
->flags
& DF_TEXTREL
) != 0)
2393 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2398 #undef add_dynamic_entry
2403 /* Relocate an M32R/D ELF section.
2404 There is some attempt to make this function usable for many architectures,
2405 both for RELA and REL type relocs, if only to serve as a learning tool.
2407 The RELOCATE_SECTION function is called by the new ELF backend linker
2408 to handle the relocations for a section.
2410 The relocs are always passed as Rela structures; if the section
2411 actually uses Rel structures, the r_addend field will always be
2414 This function is responsible for adjust the section contents as
2415 necessary, and (if using Rela relocs and generating a
2416 relocatable output file) adjusting the reloc addend as
2419 This function does not have to worry about setting the reloc
2420 address or the reloc symbol index.
2422 LOCAL_SYMS is a pointer to the swapped in local symbols.
2424 LOCAL_SECTIONS is an array giving the section in the input file
2425 corresponding to the st_shndx field of each local symbol.
2427 The global hash table entry for the global symbols can be found
2428 via elf_sym_hashes (input_bfd).
2430 When generating relocatable output, this function must handle
2431 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2432 going to be the section symbol corresponding to the output
2433 section, which means that the addend must be adjusted
2437 m32r_elf_relocate_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2438 struct bfd_link_info
*info
,
2440 asection
*input_section
,
2442 Elf_Internal_Rela
*relocs
,
2443 Elf_Internal_Sym
*local_syms
,
2444 asection
**local_sections
)
2446 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2447 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
2448 Elf_Internal_Rela
*rel
, *relend
;
2449 /* Assume success. */
2450 bfd_boolean ret
= TRUE
;
2451 struct elf_m32r_link_hash_table
*htab
= m32r_elf_hash_table (info
);
2453 bfd_vma
*local_got_offsets
;
2454 asection
*sgot
, *splt
, *sreloc
;
2455 bfd_vma high_address
= bfd_get_section_limit (input_bfd
, input_section
);
2460 dynobj
= htab
->root
.dynobj
;
2461 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2468 relend
= relocs
+ input_section
->reloc_count
;
2469 for (; rel
< relend
; rel
++)
2472 reloc_howto_type
*howto
;
2473 unsigned long r_symndx
;
2474 struct elf_link_hash_entry
*h
;
2475 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2476 ensure it's zero (we use REL relocs, not RELA). Therefore this
2477 should be assigning zero to `addend', but for clarity we use
2479 bfd_vma addend
= rel
->r_addend
;
2480 bfd_vma offset
= rel
->r_offset
;
2482 Elf_Internal_Sym
*sym
;
2484 const char *sym_name
;
2485 bfd_reloc_status_type r
;
2486 const char *errmsg
= NULL
;
2487 bfd_boolean use_rel
= FALSE
;
2490 r_type
= ELF32_R_TYPE (rel
->r_info
);
2491 if (r_type
< 0 || r_type
>= (int) R_M32R_max
)
2493 (*_bfd_error_handler
) (_("%B: unknown relocation type %d"),
2496 bfd_set_error (bfd_error_bad_value
);
2501 if ( r_type
== R_M32R_GNU_VTENTRY
2502 || r_type
== R_M32R_GNU_VTINHERIT
2503 || r_type
== R_M32R_NONE
2504 || r_type
== R_M32R_RELA_GNU_VTENTRY
2505 || r_type
== R_M32R_RELA_GNU_VTINHERIT
)
2508 if (r_type
<= R_M32R_GNU_VTENTRY
)
2511 howto
= m32r_elf_howto_table
+ r_type
;
2512 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2518 if (r_symndx
< symtab_hdr
->sh_info
)
2521 sym
= local_syms
+ r_symndx
;
2522 sec
= local_sections
[r_symndx
];
2523 sym_name
= "<local symbol>";
2527 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2528 addend
= rel
->r_addend
;
2532 relocation
= (sec
->output_section
->vma
2533 + sec
->output_offset
2539 /* External symbol. */
2542 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2543 while (h
->root
.type
== bfd_link_hash_indirect
2544 || h
->root
.type
== bfd_link_hash_warning
)
2545 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2546 sym_name
= h
->root
.root
.string
;
2548 if (h
->root
.type
== bfd_link_hash_defined
2549 || h
->root
.type
== bfd_link_hash_defweak
)
2552 sec
= h
->root
.u
.def
.section
;
2554 dyn
= htab
->root
.dynamic_sections_created
;
2555 sec
= h
->root
.u
.def
.section
;
2556 if (r_type
== R_M32R_GOTPC24
2557 || (r_type
== R_M32R_GOTPC_HI_ULO
2558 || r_type
== R_M32R_GOTPC_HI_SLO
2559 || r_type
== R_M32R_GOTPC_LO
)
2560 || (r_type
== R_M32R_26_PLTREL
2561 && h
->plt
.offset
!= (bfd_vma
) -1)
2562 || ((r_type
== R_M32R_GOT24
2563 || r_type
== R_M32R_GOT16_HI_ULO
2564 || r_type
== R_M32R_GOT16_HI_SLO
2565 || r_type
== R_M32R_GOT16_LO
)
2566 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2569 || (! info
->symbolic
&& h
->dynindx
!= -1)
2570 || !h
->def_regular
))
2572 && ((! info
->symbolic
&& h
->dynindx
!= -1)
2574 && (((r_type
== R_M32R_16_RELA
2575 || r_type
== R_M32R_32_RELA
2576 || r_type
== R_M32R_24_RELA
2577 || r_type
== R_M32R_HI16_ULO_RELA
2578 || r_type
== R_M32R_HI16_SLO_RELA
2579 || r_type
== R_M32R_LO16_RELA
)
2580 && !h
->forced_local
)
2581 || r_type
== R_M32R_REL32
2582 || r_type
== R_M32R_10_PCREL_RELA
2583 || r_type
== R_M32R_18_PCREL_RELA
2584 || r_type
== R_M32R_26_PCREL_RELA
)
2585 && ((input_section
->flags
& SEC_ALLOC
) != 0
2586 /* DWARF will emit R_M32R_16(24,32) relocations
2587 in its sections against symbols defined
2588 externally in shared libraries. We can't do
2589 anything with them here. */
2590 || ((input_section
->flags
& SEC_DEBUGGING
) != 0
2591 && h
->def_dynamic
))))
2593 /* In these cases, we don't need the relocation
2594 value. We check specially because in some
2595 obscure cases sec->output_section will be NULL. */
2597 else if (sec
->output_section
!= NULL
)
2598 relocation
= (h
->root
.u
.def
.value
2599 + sec
->output_section
->vma
2600 + sec
->output_offset
);
2601 else if (!info
->relocatable
)
2603 (*_bfd_error_handler
)
2604 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2607 (long) rel
->r_offset
,
2609 h
->root
.root
.string
);
2612 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2614 else if (info
->unresolved_syms_in_objects
== RM_IGNORE
2615 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
2617 else if (!info
->relocatable
)
2619 if (! ((*info
->callbacks
->undefined_symbol
)
2620 (info
, h
->root
.root
.string
, input_bfd
,
2621 input_section
, offset
,
2622 (info
->unresolved_syms_in_objects
== RM_GENERATE_ERROR
2623 || ELF_ST_VISIBILITY (h
->other
)))))
2628 if (sec
!= NULL
&& elf_discarded_section (sec
))
2629 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2630 rel
, relend
, howto
, contents
);
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
:
2893 && r_symndx
!= STN_UNDEF
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
2913 sreloc
= _bfd_elf_get_dynamic_reloc_section
2914 (input_bfd
, input_section
, /*rela?*/ TRUE
);
2922 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
2926 if (outrel
.r_offset
== (bfd_vma
) -1)
2928 else if (outrel
.r_offset
== (bfd_vma
) -2)
2929 skip
= relocate
= TRUE
;
2930 outrel
.r_offset
+= (input_section
->output_section
->vma
2931 + input_section
->output_offset
);
2934 memset (&outrel
, 0, sizeof outrel
);
2935 else if ( r_type
== R_M32R_10_PCREL_RELA
2936 || r_type
== R_M32R_18_PCREL_RELA
2937 || r_type
== R_M32R_26_PCREL_RELA
2938 || r_type
== R_M32R_REL32
)
2940 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
2941 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2942 outrel
.r_addend
= rel
->r_addend
;
2946 /* h->dynindx may be -1 if this symbol was marked to
2949 || ((info
->symbolic
|| h
->dynindx
== -1)
2953 outrel
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
2954 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2958 BFD_ASSERT (h
->dynindx
!= -1);
2959 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2960 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2964 loc
= sreloc
->contents
;
2965 loc
+= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
2966 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
2967 ++sreloc
->reloc_count
;
2969 /* If this reloc is against an external symbol, we do
2970 not want to fiddle with the addend. Otherwise, we
2971 need to include the symbol value so that it becomes
2972 an addend for the dynamic reloc. */
2977 else if (r_type
!= R_M32R_10_PCREL_RELA
)
2981 case (int) R_M32R_10_PCREL
:
2982 r
= m32r_elf_do_10_pcrel_reloc (input_bfd
, howto
, input_section
,
2984 sec
, relocation
, addend
);
2987 case (int) R_M32R_HI16_SLO
:
2988 case (int) R_M32R_HI16_ULO
:
2990 Elf_Internal_Rela
*lorel
;
2992 /* We allow an arbitrary number of HI16 relocs before the
2993 LO16 reloc. This permits gcc to emit the HI and LO relocs
2995 for (lorel
= rel
+ 1;
2997 && (ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_SLO
2998 || ELF32_R_TYPE (lorel
->r_info
) == R_M32R_HI16_ULO
));
3002 && ELF32_R_TYPE (lorel
->r_info
) == R_M32R_LO16
)
3004 m32r_elf_relocate_hi16 (input_bfd
, r_type
, rel
, lorel
,
3005 contents
, relocation
+ addend
);
3009 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3011 relocation
, addend
);
3016 case (int) R_M32R_SDA16_RELA
:
3017 case (int) R_M32R_SDA16
:
3021 BFD_ASSERT (sec
!= NULL
);
3022 name
= bfd_get_section_name (abfd
, sec
);
3024 if ( strcmp (name
, ".sdata") == 0
3025 || strcmp (name
, ".sbss") == 0
3026 || strcmp (name
, ".scommon") == 0)
3029 bfd
*out_bfd
= sec
->output_section
->owner
;
3031 r
= m32r_elf_final_sda_base (out_bfd
, info
,
3034 if (r
!= bfd_reloc_ok
)
3040 /* At this point `relocation' contains the object's
3042 relocation
-= sda_base
;
3043 /* Now it contains the offset from _SDA_BASE_. */
3047 (*_bfd_error_handler
)
3048 (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3052 m32r_elf_howto_table
[(int) r_type
].name
);
3053 /*bfd_set_error (bfd_error_bad_value); ??? why? */
3060 default : /* OLD_M32R_RELOC */
3062 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3064 relocation
, addend
);
3068 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
3069 contents
, rel
->r_offset
,
3070 relocation
, rel
->r_addend
);
3076 if (r
!= bfd_reloc_ok
)
3078 /* FIXME: This should be generic enough to go in a utility. */
3082 name
= h
->root
.root
.string
;
3085 name
= (bfd_elf_string_from_elf_section
3086 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
3087 if (name
== NULL
|| *name
== '\0')
3088 name
= bfd_section_name (input_bfd
, sec
);
3096 case bfd_reloc_overflow
:
3097 if (! ((*info
->callbacks
->reloc_overflow
)
3098 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3099 (bfd_vma
) 0, input_bfd
, input_section
, offset
)))
3103 case bfd_reloc_undefined
:
3104 if (! ((*info
->callbacks
->undefined_symbol
)
3105 (info
, name
, input_bfd
, input_section
,
3110 case bfd_reloc_outofrange
:
3111 errmsg
= _("internal error: out of range error");
3114 case bfd_reloc_notsupported
:
3115 errmsg
= _("internal error: unsupported relocation error");
3118 case bfd_reloc_dangerous
:
3119 errmsg
= _("internal error: dangerous error");
3123 errmsg
= _("internal error: unknown error");
3127 if (!((*info
->callbacks
->warning
)
3128 (info
, errmsg
, name
, input_bfd
, input_section
,
3139 /* Finish up dynamic symbol handling. We set the contents of various
3140 dynamic sections here. */
3143 m32r_elf_finish_dynamic_symbol (bfd
*output_bfd
,
3144 struct bfd_link_info
*info
,
3145 struct elf_link_hash_entry
*h
,
3146 Elf_Internal_Sym
*sym
)
3148 struct elf_m32r_link_hash_table
*htab
;
3152 printf ("m32r_elf_finish_dynamic_symbol()\n");
3155 htab
= m32r_elf_hash_table (info
);
3159 if (h
->plt
.offset
!= (bfd_vma
) -1)
3167 Elf_Internal_Rela rela
;
3169 /* This symbol has an entry in the procedure linkage table. Set
3172 BFD_ASSERT (h
->dynindx
!= -1);
3175 sgot
= htab
->sgotplt
;
3176 srela
= htab
->srelplt
;
3177 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
3179 /* Get the index in the procedure linkage table which
3180 corresponds to this symbol. This is the index of this symbol
3181 in all the symbols for which we are making plt entries. The
3182 first entry in the procedure linkage table is reserved. */
3183 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
3185 /* Get the offset into the .got table of the entry that
3186 corresponds to this function. Each .got entry is 4 bytes.
3187 The first three are reserved. */
3188 got_offset
= (plt_index
+ 3) * 4;
3190 /* Fill in the entry in the procedure linkage table. */
3193 bfd_put_32 (output_bfd
,
3195 + (((sgot
->output_section
->vma
3196 + sgot
->output_offset
3197 + got_offset
) >> 16) & 0xffff)),
3198 splt
->contents
+ h
->plt
.offset
);
3199 bfd_put_32 (output_bfd
,
3201 + ((sgot
->output_section
->vma
3202 + sgot
->output_offset
3203 + got_offset
) & 0xffff)),
3204 splt
->contents
+ h
->plt
.offset
+ 4);
3205 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3206 splt
->contents
+ h
->plt
.offset
+ 8);
3207 bfd_put_32 (output_bfd
,
3209 + plt_index
* sizeof (Elf32_External_Rela
)),
3210 splt
->contents
+ h
->plt
.offset
+ 12);
3211 bfd_put_32 (output_bfd
,
3213 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3214 splt
->contents
+ h
->plt
.offset
+ 16);
3218 bfd_put_32 (output_bfd
,
3219 PLT_ENTRY_WORD0
+ got_offset
,
3220 splt
->contents
+ h
->plt
.offset
);
3221 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
,
3222 splt
->contents
+ h
->plt
.offset
+ 4);
3223 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD2
,
3224 splt
->contents
+ h
->plt
.offset
+ 8);
3225 bfd_put_32 (output_bfd
,
3227 + plt_index
* sizeof (Elf32_External_Rela
)),
3228 splt
->contents
+ h
->plt
.offset
+ 12);
3229 bfd_put_32 (output_bfd
,
3231 + (((unsigned int) ((- (h
->plt
.offset
+ 16)) >> 2)) & 0xffffff)),
3232 splt
->contents
+ h
->plt
.offset
+ 16);
3235 /* Fill in the entry in the global offset table. */
3236 bfd_put_32 (output_bfd
,
3237 (splt
->output_section
->vma
3238 + splt
->output_offset
3240 + 12), /* same offset */
3241 sgot
->contents
+ got_offset
);
3243 /* Fill in the entry in the .rela.plt section. */
3244 rela
.r_offset
= (sgot
->output_section
->vma
3245 + sgot
->output_offset
3247 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_JMP_SLOT
);
3249 loc
= srela
->contents
;
3250 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
3251 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3253 if (!h
->def_regular
)
3255 /* Mark the symbol as undefined, rather than as defined in
3256 the .plt section. Leave the value alone. */
3257 sym
->st_shndx
= SHN_UNDEF
;
3261 if (h
->got
.offset
!= (bfd_vma
) -1)
3265 Elf_Internal_Rela rela
;
3267 /* This symbol has an entry in the global offset table. Set it
3271 srela
= htab
->srelgot
;
3272 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
3274 rela
.r_offset
= (sgot
->output_section
->vma
3275 + sgot
->output_offset
3276 + (h
->got
.offset
&~ 1));
3278 /* If this is a -Bsymbolic link, and the symbol is defined
3279 locally, we just want to emit a RELATIVE reloc. Likewise if
3280 the symbol was forced to be local because of a version file.
3281 The entry in the global offset table will already have been
3282 initialized in the relocate_section function. */
3289 rela
.r_info
= ELF32_R_INFO (0, R_M32R_RELATIVE
);
3290 rela
.r_addend
= (h
->root
.u
.def
.value
3291 + h
->root
.u
.def
.section
->output_section
->vma
3292 + h
->root
.u
.def
.section
->output_offset
);
3296 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
3297 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
3298 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_GLOB_DAT
);
3302 loc
= srela
->contents
;
3303 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
3304 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3305 ++srela
->reloc_count
;
3311 Elf_Internal_Rela rela
;
3313 /* This symbols needs a copy reloc. Set it up. */
3315 BFD_ASSERT (h
->dynindx
!= -1
3316 && (h
->root
.type
== bfd_link_hash_defined
3317 || h
->root
.type
== bfd_link_hash_defweak
));
3319 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
3321 BFD_ASSERT (s
!= NULL
);
3323 rela
.r_offset
= (h
->root
.u
.def
.value
3324 + h
->root
.u
.def
.section
->output_section
->vma
3325 + h
->root
.u
.def
.section
->output_offset
);
3326 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_M32R_COPY
);
3329 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
3330 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
3334 /* Mark some specially defined symbols as absolute. */
3335 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
3336 || h
== htab
->root
.hgot
)
3337 sym
->st_shndx
= SHN_ABS
;
3343 /* Finish up the dynamic sections. */
3346 m32r_elf_finish_dynamic_sections (bfd
*output_bfd
,
3347 struct bfd_link_info
*info
)
3349 struct elf_m32r_link_hash_table
*htab
;
3355 printf ("m32r_elf_finish_dynamic_sections()\n");
3358 htab
= m32r_elf_hash_table (info
);
3362 dynobj
= htab
->root
.dynobj
;
3364 sgot
= htab
->sgotplt
;
3365 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3367 if (htab
->root
.dynamic_sections_created
)
3370 Elf32_External_Dyn
*dyncon
, *dynconend
;
3372 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
3374 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3375 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3377 for (; dyncon
< dynconend
; dyncon
++)
3379 Elf_Internal_Dyn dyn
;
3382 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3390 s
= htab
->sgot
->output_section
;
3393 s
= htab
->srelplt
->output_section
;
3395 BFD_ASSERT (s
!= NULL
);
3396 dyn
.d_un
.d_ptr
= s
->vma
;
3397 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3401 s
= htab
->srelplt
->output_section
;
3402 BFD_ASSERT (s
!= NULL
);
3403 dyn
.d_un
.d_val
= s
->size
;
3404 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3408 /* My reading of the SVR4 ABI indicates that the
3409 procedure linkage table relocs (DT_JMPREL) should be
3410 included in the overall relocs (DT_RELA). This is
3411 what Solaris does. However, UnixWare can not handle
3412 that case. Therefore, we override the DT_RELASZ entry
3413 here to make it not include the JMPREL relocs. Since
3414 the linker script arranges for .rela.plt to follow all
3415 other relocation sections, we don't have to worry
3416 about changing the DT_RELA entry. */
3417 if (htab
->srelplt
!= NULL
)
3419 s
= htab
->srelplt
->output_section
;
3420 dyn
.d_un
.d_val
-= s
->size
;
3422 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3427 /* Fill in the first entry in the procedure linkage table. */
3429 if (splt
&& splt
->size
> 0)
3433 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
3434 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
3435 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
3436 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
3437 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
3442 /* addr = .got + 4 */
3443 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
3444 bfd_put_32 (output_bfd
,
3445 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
3447 bfd_put_32 (output_bfd
,
3448 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
3449 splt
->contents
+ 4);
3450 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
3451 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
3452 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
3455 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
3460 /* Fill in the first three entries in the global offset table. */
3461 if (sgot
&& sgot
->size
> 0)
3464 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
3466 bfd_put_32 (output_bfd
,
3467 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
3469 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
3470 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
3472 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
3479 /* Set the right machine number. */
3482 m32r_elf_object_p (bfd
*abfd
)
3484 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3487 case E_M32R_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r
); break;
3488 case E_M32RX_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32rx
); break;
3489 case E_M32R2_ARCH
: (void) bfd_default_set_arch_mach (abfd
, bfd_arch_m32r
, bfd_mach_m32r2
); break;
3494 /* Store the machine number in the flags field. */
3497 m32r_elf_final_write_processing (bfd
*abfd
,
3498 bfd_boolean linker ATTRIBUTE_UNUSED
)
3502 switch (bfd_get_mach (abfd
))
3505 case bfd_mach_m32r
: val
= E_M32R_ARCH
; break;
3506 case bfd_mach_m32rx
: val
= E_M32RX_ARCH
; break;
3507 case bfd_mach_m32r2
: val
= E_M32R2_ARCH
; break;
3510 elf_elfheader (abfd
)->e_flags
&=~ EF_M32R_ARCH
;
3511 elf_elfheader (abfd
)->e_flags
|= val
;
3514 /* Function to keep M32R specific file flags. */
3517 m32r_elf_set_private_flags (bfd
*abfd
, flagword flags
)
3519 BFD_ASSERT (!elf_flags_init (abfd
)
3520 || elf_elfheader (abfd
)->e_flags
== flags
);
3522 elf_elfheader (abfd
)->e_flags
= flags
;
3523 elf_flags_init (abfd
) = TRUE
;
3527 /* Merge backend specific data from an object file to the output
3528 object file when linking. */
3531 m32r_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3536 if ( bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3537 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3540 in_flags
= elf_elfheader (ibfd
)->e_flags
;
3541 out_flags
= elf_elfheader (obfd
)->e_flags
;
3543 if (! elf_flags_init (obfd
))
3545 /* If the input is the default architecture then do not
3546 bother setting the flags for the output architecture,
3547 instead allow future merges to do this. If no future
3548 merges ever set these flags then they will retain their
3549 unitialised values, which surprise surprise, correspond
3550 to the default values. */
3551 if (bfd_get_arch_info (ibfd
)->the_default
)
3554 elf_flags_init (obfd
) = TRUE
;
3555 elf_elfheader (obfd
)->e_flags
= in_flags
;
3557 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
3558 && bfd_get_arch_info (obfd
)->the_default
)
3559 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
3560 bfd_get_mach (ibfd
));
3565 /* Check flag compatibility. */
3566 if (in_flags
== out_flags
)
3569 if ((in_flags
& EF_M32R_ARCH
) != (out_flags
& EF_M32R_ARCH
))
3571 if ( ((in_flags
& EF_M32R_ARCH
) != E_M32R_ARCH
)
3572 || ((out_flags
& EF_M32R_ARCH
) == E_M32R_ARCH
)
3573 || ((in_flags
& EF_M32R_ARCH
) == E_M32R2_ARCH
))
3575 (*_bfd_error_handler
)
3576 (_("%B: Instruction set mismatch with previous modules"), ibfd
);
3578 bfd_set_error (bfd_error_bad_value
);
3586 /* Display the flags field. */
3589 m32r_elf_print_private_bfd_data (bfd
*abfd
, void * ptr
)
3591 FILE * file
= (FILE *) ptr
;
3593 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
3595 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
3597 fprintf (file
, _("private flags = %lx"), elf_elfheader (abfd
)->e_flags
);
3599 switch (elf_elfheader (abfd
)->e_flags
& EF_M32R_ARCH
)
3602 case E_M32R_ARCH
: fprintf (file
, _(": m32r instructions")); break;
3603 case E_M32RX_ARCH
: fprintf (file
, _(": m32rx instructions")); break;
3604 case E_M32R2_ARCH
: fprintf (file
, _(": m32r2 instructions")); break;
3613 m32r_elf_gc_mark_hook (asection
*sec
,
3614 struct bfd_link_info
*info
,
3615 Elf_Internal_Rela
*rel
,
3616 struct elf_link_hash_entry
*h
,
3617 Elf_Internal_Sym
*sym
)
3620 switch (ELF32_R_TYPE (rel
->r_info
))
3622 case R_M32R_GNU_VTINHERIT
:
3623 case R_M32R_GNU_VTENTRY
:
3624 case R_M32R_RELA_GNU_VTINHERIT
:
3625 case R_M32R_RELA_GNU_VTENTRY
:
3629 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3633 m32r_elf_gc_sweep_hook (bfd
*abfd ATTRIBUTE_UNUSED
,
3634 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3635 asection
*sec ATTRIBUTE_UNUSED
,
3636 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
)
3638 /* Update the got entry reference counts for the section being removed. */
3639 Elf_Internal_Shdr
*symtab_hdr
;
3640 struct elf_link_hash_entry
**sym_hashes
;
3641 bfd_signed_vma
*local_got_refcounts
;
3642 const Elf_Internal_Rela
*rel
, *relend
;
3644 if (info
->relocatable
)
3647 elf_section_data (sec
)->local_dynrel
= NULL
;
3649 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3650 sym_hashes
= elf_sym_hashes (abfd
);
3651 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3653 relend
= relocs
+ sec
->reloc_count
;
3654 for (rel
= relocs
; rel
< relend
; rel
++)
3656 unsigned long r_symndx
;
3657 struct elf_link_hash_entry
*h
= NULL
;
3659 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3660 if (r_symndx
>= symtab_hdr
->sh_info
)
3662 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3663 while (h
->root
.type
== bfd_link_hash_indirect
3664 || h
->root
.type
== bfd_link_hash_warning
)
3665 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3668 switch (ELF32_R_TYPE (rel
->r_info
))
3670 case R_M32R_GOT16_HI_ULO
:
3671 case R_M32R_GOT16_HI_SLO
:
3672 case R_M32R_GOT16_LO
:
3674 case R_M32R_GOTOFF_HI_ULO
:
3675 case R_M32R_GOTOFF_HI_SLO
:
3676 case R_M32R_GOTOFF_LO
:
3678 case R_M32R_GOTPC_HI_ULO
:
3679 case R_M32R_GOTPC_HI_SLO
:
3680 case R_M32R_GOTPC_LO
:
3681 case R_M32R_GOTPC24
:
3684 if (h
->got
.refcount
> 0)
3689 if (local_got_refcounts
&& local_got_refcounts
[r_symndx
] > 0)
3690 local_got_refcounts
[r_symndx
]--;
3694 case R_M32R_16_RELA
:
3695 case R_M32R_24_RELA
:
3696 case R_M32R_32_RELA
:
3698 case R_M32R_HI16_ULO_RELA
:
3699 case R_M32R_HI16_SLO_RELA
:
3700 case R_M32R_LO16_RELA
:
3701 case R_M32R_SDA16_RELA
:
3702 case R_M32R_10_PCREL_RELA
:
3703 case R_M32R_18_PCREL_RELA
:
3704 case R_M32R_26_PCREL_RELA
:
3707 struct elf_m32r_link_hash_entry
*eh
;
3708 struct elf_m32r_dyn_relocs
**pp
;
3709 struct elf_m32r_dyn_relocs
*p
;
3711 if (!info
->shared
&& h
->plt
.refcount
> 0)
3712 h
->plt
.refcount
-= 1;
3714 eh
= (struct elf_m32r_link_hash_entry
*) h
;
3716 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
3719 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
3720 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
3721 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
3722 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
3732 case R_M32R_26_PLTREL
:
3735 if (h
->plt
.refcount
> 0)
3748 /* Look through the relocs for a section during the first phase.
3749 Since we don't do .gots or .plts, we just need to consider the
3750 virtual table relocs for gc. */
3753 m32r_elf_check_relocs (bfd
*abfd
,
3754 struct bfd_link_info
*info
,
3756 const Elf_Internal_Rela
*relocs
)
3758 Elf_Internal_Shdr
*symtab_hdr
;
3759 struct elf_link_hash_entry
**sym_hashes
;
3760 const Elf_Internal_Rela
*rel
;
3761 const Elf_Internal_Rela
*rel_end
;
3762 struct elf_m32r_link_hash_table
*htab
;
3766 if (info
->relocatable
)
3770 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3771 sym_hashes
= elf_sym_hashes (abfd
);
3773 htab
= m32r_elf_hash_table (info
);
3777 dynobj
= htab
->root
.dynobj
;
3779 rel_end
= relocs
+ sec
->reloc_count
;
3780 for (rel
= relocs
; rel
< rel_end
; rel
++)
3783 struct elf_link_hash_entry
*h
;
3784 unsigned long r_symndx
;
3786 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3787 r_type
= ELF32_R_TYPE (rel
->r_info
);
3788 if (r_symndx
< symtab_hdr
->sh_info
)
3792 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3793 while (h
->root
.type
== bfd_link_hash_indirect
3794 || h
->root
.type
== bfd_link_hash_warning
)
3795 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3798 /* Some relocs require a global offset table. */
3799 if (htab
->sgot
== NULL
)
3803 case R_M32R_GOT16_HI_ULO
:
3804 case R_M32R_GOT16_HI_SLO
:
3806 case R_M32R_GOTOFF_HI_ULO
:
3807 case R_M32R_GOTOFF_HI_SLO
:
3808 case R_M32R_GOTOFF_LO
:
3809 case R_M32R_GOT16_LO
:
3810 case R_M32R_GOTPC24
:
3811 case R_M32R_GOTPC_HI_ULO
:
3812 case R_M32R_GOTPC_HI_SLO
:
3813 case R_M32R_GOTPC_LO
:
3816 htab
->root
.dynobj
= dynobj
= abfd
;
3817 if (! create_got_section (dynobj
, info
))
3828 case R_M32R_GOT16_HI_ULO
:
3829 case R_M32R_GOT16_HI_SLO
:
3830 case R_M32R_GOT16_LO
:
3834 h
->got
.refcount
+= 1;
3837 bfd_signed_vma
*local_got_refcounts
;
3839 /* This is a global offset table entry for a local
3841 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3842 if (local_got_refcounts
== NULL
)
3846 size
= symtab_hdr
->sh_info
;
3847 size
*= sizeof (bfd_signed_vma
);
3848 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3849 if (local_got_refcounts
== NULL
)
3851 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3853 local_got_refcounts
[r_symndx
] += 1;
3857 case R_M32R_26_PLTREL
:
3858 /* This symbol requires a procedure linkage table entry. We
3859 actually build the entry in adjust_dynamic_symbol,
3860 because this might be a case of linking PIC code without
3861 linking in any dynamic objects, in which case we don't
3862 need to generate a procedure linkage table after all. */
3864 /* If this is a local symbol, we resolve it directly without
3865 creating a procedure linkage table entry. */
3869 if (h
->forced_local
)
3873 h
->plt
.refcount
+= 1;
3876 case R_M32R_16_RELA
:
3877 case R_M32R_24_RELA
:
3878 case R_M32R_32_RELA
:
3880 case R_M32R_HI16_ULO_RELA
:
3881 case R_M32R_HI16_SLO_RELA
:
3882 case R_M32R_LO16_RELA
:
3883 case R_M32R_SDA16_RELA
:
3884 case R_M32R_10_PCREL_RELA
:
3885 case R_M32R_18_PCREL_RELA
:
3886 case R_M32R_26_PCREL_RELA
:
3888 if (h
!= NULL
&& !info
->shared
)
3891 h
->plt
.refcount
+= 1;
3894 /* If we are creating a shared library, and this is a reloc
3895 against a global symbol, or a non PC relative reloc
3896 against a local symbol, then we need to copy the reloc
3897 into the shared library. However, if we are linking with
3898 -Bsymbolic, we do not need to copy a reloc against a
3899 global symbol which is defined in an object we are
3900 including in the link (i.e., DEF_REGULAR is set). At
3901 this point we have not seen all the input files, so it is
3902 possible that DEF_REGULAR is not set now but will be set
3903 later (it is never cleared). We account for that
3904 possibility below by storing information in the
3905 dyn_relocs field of the hash table entry. A similar
3906 situation occurs when creating shared libraries and symbol
3907 visibility changes render the symbol local.
3909 If on the other hand, we are creating an executable, we
3910 may need to keep relocations for symbols satisfied by a
3911 dynamic library if we manage to avoid copy relocs for the
3914 && (sec
->flags
& SEC_ALLOC
) != 0
3915 && (( r_type
!= R_M32R_26_PCREL_RELA
3916 && r_type
!= R_M32R_18_PCREL_RELA
3917 && r_type
!= R_M32R_10_PCREL_RELA
3918 && r_type
!= R_M32R_REL32
)
3920 && (! info
->symbolic
3921 || h
->root
.type
== bfd_link_hash_defweak
3922 || !h
->def_regular
))))
3924 && (sec
->flags
& SEC_ALLOC
) != 0
3926 && (h
->root
.type
== bfd_link_hash_defweak
3927 || !h
->def_regular
)))
3929 struct elf_m32r_dyn_relocs
*p
;
3930 struct elf_m32r_dyn_relocs
**head
;
3933 htab
->root
.dynobj
= dynobj
= abfd
;
3935 /* When creating a shared object, we must copy these
3936 relocs into the output file. We create a reloc
3937 section in dynobj and make room for the reloc. */
3940 sreloc
= _bfd_elf_make_dynamic_reloc_section
3941 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
3947 /* If this is a global symbol, we count the number of
3948 relocations we need for this symbol. */
3950 head
= &((struct elf_m32r_link_hash_entry
*) h
)->dyn_relocs
;
3953 /* Track dynamic relocs needed for local syms too. */
3956 Elf_Internal_Sym
*isym
;
3958 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3963 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3967 vpp
= &elf_section_data (s
)->local_dynrel
;
3968 head
= (struct elf_m32r_dyn_relocs
**) vpp
;
3972 if (p
== NULL
|| p
->sec
!= sec
)
3974 bfd_size_type amt
= sizeof (*p
);
3976 p
= bfd_alloc (dynobj
, amt
);
3987 if ( ELF32_R_TYPE (rel
->r_info
) == R_M32R_26_PCREL_RELA
3988 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_18_PCREL_RELA
3989 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_10_PCREL_RELA
3990 || ELF32_R_TYPE (rel
->r_info
) == R_M32R_REL32
)
3995 /* This relocation describes the C++ object vtable hierarchy.
3996 Reconstruct it for later use during GC. */
3997 case R_M32R_RELA_GNU_VTINHERIT
:
3998 case R_M32R_GNU_VTINHERIT
:
3999 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4003 /* This relocation describes which C++ vtable entries are actually
4004 used. Record for later use during GC. */
4005 case R_M32R_GNU_VTENTRY
:
4006 BFD_ASSERT (h
!= NULL
);
4008 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
4011 case R_M32R_RELA_GNU_VTENTRY
:
4012 BFD_ASSERT (h
!= NULL
);
4014 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4023 static const struct bfd_elf_special_section m32r_elf_special_sections
[] =
4025 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
4026 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
4027 { NULL
, 0, 0, 0, 0 }
4030 static enum elf_reloc_type_class
4031 m32r_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
4033 switch ((int) ELF32_R_TYPE (rela
->r_info
))
4035 case R_M32R_RELATIVE
: return reloc_class_relative
;
4036 case R_M32R_JMP_SLOT
: return reloc_class_plt
;
4037 case R_M32R_COPY
: return reloc_class_copy
;
4038 default: return reloc_class_normal
;
4042 #define ELF_ARCH bfd_arch_m32r
4043 #define ELF_TARGET_ID M32R_ELF_DATA
4044 #define ELF_MACHINE_CODE EM_M32R
4045 #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
4046 #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
4048 #define TARGET_BIG_SYM bfd_elf32_m32r_vec
4049 #define TARGET_BIG_NAME "elf32-m32r"
4050 #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec
4051 #define TARGET_LITTLE_NAME "elf32-m32rle"
4053 #define elf_info_to_howto m32r_info_to_howto
4054 #define elf_info_to_howto_rel m32r_info_to_howto_rel
4055 #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
4056 #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
4057 #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
4058 #define elf_backend_relocate_section m32r_elf_relocate_section
4059 #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
4060 #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook
4061 #define elf_backend_check_relocs m32r_elf_check_relocs
4063 #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
4064 #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
4065 #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
4066 #define elf_backend_omit_section_dynsym \
4067 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4068 #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
4069 #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
4070 #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
4071 #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
4072 #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol
4074 #define elf_backend_can_gc_sections 1
4076 #define elf_backend_rela_normal 1
4078 #define elf_backend_can_refcount 1
4079 #define elf_backend_want_got_plt 1
4080 #define elf_backend_plt_readonly 1
4081 #define elf_backend_want_plt_sym 0
4082 #define elf_backend_got_header_size 12
4084 #define elf_backend_may_use_rel_p 1
4085 #ifdef USE_M32R_OLD_RELOC
4086 #define elf_backend_default_use_rela_p 0
4087 #define elf_backend_may_use_rela_p 0
4089 #define elf_backend_default_use_rela_p 1
4090 #define elf_backend_may_use_rela_p 1
4093 #define elf_backend_object_p m32r_elf_object_p
4094 #define elf_backend_final_write_processing m32r_elf_final_write_processing
4095 #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
4096 #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
4097 #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
4098 #define elf_backend_special_sections m32r_elf_special_sections
4100 #include "elf32-target.h"
4102 #undef ELF_MAXPAGESIZE
4103 #define ELF_MAXPAGESIZE 0x1000
4105 #undef TARGET_BIG_SYM
4106 #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec
4107 #undef TARGET_BIG_NAME
4108 #define TARGET_BIG_NAME "elf32-m32r-linux"
4109 #undef TARGET_LITTLE_SYM
4110 #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec
4111 #undef TARGET_LITTLE_NAME
4112 #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
4114 #define elf32_bed elf32_m32r_lin_bed
4116 #include "elf32-target.h"