1 /* Lattice Mico32-specific support for 32-bit ELF
2 Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
3 Contributed by Jon Beniston <jon@beniston.com>
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 DEFAULT_STACK_SIZE 0x20000
30 #define PLT_ENTRY_SIZE 20
32 #define PLT0_ENTRY_WORD0 0
33 #define PLT0_ENTRY_WORD1 0
34 #define PLT0_ENTRY_WORD2 0
35 #define PLT0_ENTRY_WORD3 0
36 #define PLT0_ENTRY_WORD4 0
38 #define PLT0_PIC_ENTRY_WORD0 0
39 #define PLT0_PIC_ENTRY_WORD1 0
40 #define PLT0_PIC_ENTRY_WORD2 0
41 #define PLT0_PIC_ENTRY_WORD3 0
42 #define PLT0_PIC_ENTRY_WORD4 0
44 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
46 extern const bfd_target bfd_elf32_lm32fdpic_vec
;
48 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_lm32fdpic_vec)
50 static bfd_reloc_status_type lm32_elf_gprel_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 /* The linker needs to keep track of the number of relocs that it
54 decides to copy as dynamic relocs in check_relocs for each symbol.
55 This is so that it can later discard them if they are found to be
56 unnecessary. We store the information in a field extending the
57 regular ELF linker hash table. */
59 struct elf_lm32_dyn_relocs
61 struct elf_lm32_dyn_relocs
*next
;
63 /* The input section of the reloc. */
66 /* Total number of relocs copied for the input section. */
69 /* Number of pc-relative relocs copied for the input section. */
70 bfd_size_type pc_count
;
73 /* lm32 ELF linker hash entry. */
75 struct elf_lm32_link_hash_entry
77 struct elf_link_hash_entry root
;
79 /* Track dynamic relocs copied for this symbol. */
80 struct elf_lm32_dyn_relocs
*dyn_relocs
;
83 /* lm32 ELF linker hash table. */
85 struct elf_lm32_link_hash_table
87 struct elf_link_hash_table root
;
89 /* Short-cuts to get to dynamic linker sections. */
102 /* Get the lm32 ELF linker hash table from a link_info structure. */
104 #define lm32_elf_hash_table(p) \
105 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
106 == LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL)
108 #define lm32fdpic_got_section(info) \
109 (lm32_elf_hash_table (info)->sgot)
110 #define lm32fdpic_gotrel_section(info) \
111 (lm32_elf_hash_table (info)->srelgot)
112 #define lm32fdpic_fixup32_section(info) \
113 (lm32_elf_hash_table (info)->sfixup32)
115 struct weak_symbol_list
118 struct weak_symbol_list
*next
;
121 /* Create an entry in an lm32 ELF linker hash table. */
123 static struct bfd_hash_entry
*
124 lm32_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
125 struct bfd_hash_table
*table
,
128 struct elf_lm32_link_hash_entry
*ret
=
129 (struct elf_lm32_link_hash_entry
*) entry
;
131 /* Allocate the structure if it has not already been allocated by a
134 ret
= bfd_hash_allocate (table
,
135 sizeof (struct elf_lm32_link_hash_entry
));
139 /* Call the allocation method of the superclass. */
140 ret
= ((struct elf_lm32_link_hash_entry
*)
141 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
145 struct elf_lm32_link_hash_entry
*eh
;
147 eh
= (struct elf_lm32_link_hash_entry
*) ret
;
148 eh
->dyn_relocs
= NULL
;
151 return (struct bfd_hash_entry
*) ret
;
154 /* Create an lm32 ELF linker hash table. */
156 static struct bfd_link_hash_table
*
157 lm32_elf_link_hash_table_create (bfd
*abfd
)
159 struct elf_lm32_link_hash_table
*ret
;
160 bfd_size_type amt
= sizeof (struct elf_lm32_link_hash_table
);
162 ret
= bfd_malloc (amt
);
166 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
167 lm32_elf_link_hash_newfunc
,
168 sizeof (struct elf_lm32_link_hash_entry
),
178 ret
->sfixup32
= NULL
;
185 return &ret
->root
.root
;
188 /* Add a fixup to the ROFIXUP section. */
191 _lm32fdpic_add_rofixup (bfd
*output_bfd
, asection
*rofixup
, bfd_vma relocation
)
193 bfd_vma fixup_offset
;
195 if (rofixup
->flags
& SEC_EXCLUDE
)
198 fixup_offset
= rofixup
->reloc_count
* 4;
199 if (rofixup
->contents
)
201 BFD_ASSERT (fixup_offset
< rofixup
->size
);
202 if (fixup_offset
< rofixup
->size
)
203 bfd_put_32 (output_bfd
, relocation
, rofixup
->contents
+ fixup_offset
);
205 rofixup
->reloc_count
++;
210 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
211 shortcuts to them in our hash table. */
214 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
216 struct elf_lm32_link_hash_table
*htab
;
219 /* This function may be called more than once. */
220 s
= bfd_get_linker_section (dynobj
, ".got");
224 htab
= lm32_elf_hash_table (info
);
228 if (! _bfd_elf_create_got_section (dynobj
, info
))
231 htab
->sgot
= bfd_get_linker_section (dynobj
, ".got");
232 htab
->sgotplt
= bfd_get_linker_section (dynobj
, ".got.plt");
233 htab
->srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
234 if (! htab
->sgot
|| ! htab
->sgotplt
|| ! htab
->srelgot
)
240 /* Create .rofixup sections in DYNOBJ, and set up
241 shortcuts to them in our hash table. */
244 create_rofixup_section (bfd
*dynobj
, struct bfd_link_info
*info
)
246 struct elf_lm32_link_hash_table
*htab
;
247 htab
= lm32_elf_hash_table (info
);
252 /* Fixup section for R_LM32_32 relocs. */
253 lm32fdpic_fixup32_section (info
)
254 = bfd_make_section_anyway_with_flags (dynobj
,
262 if (lm32fdpic_fixup32_section (info
) == NULL
263 || ! bfd_set_section_alignment (dynobj
,
264 lm32fdpic_fixup32_section (info
), 2))
270 static reloc_howto_type lm32_elf_howto_table
[] =
272 /* This reloc does nothing. */
273 HOWTO (R_LM32_NONE
, /* type */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_bitfield
,/* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_LM32_NONE", /* name */
282 FALSE
, /* partial_inplace */
285 FALSE
), /* pcrel_offset */
287 /* An 8 bit absolute relocation. */
288 HOWTO (R_LM32_8
, /* type */
290 0, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE
, /* pc_relative */
294 complain_overflow_bitfield
,/* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_LM32_8", /* name */
297 FALSE
, /* partial_inplace */
300 FALSE
), /* pcrel_offset */
302 /* A 16 bit absolute relocation. */
303 HOWTO (R_LM32_16
, /* type */
305 1, /* size (0 = byte, 1 = short, 2 = long) */
307 FALSE
, /* pc_relative */
309 complain_overflow_bitfield
,/* complain_on_overflow */
310 bfd_elf_generic_reloc
, /* special_function */
311 "R_LM32_16", /* name */
312 FALSE
, /* partial_inplace */
314 0xffff, /* dst_mask */
315 FALSE
), /* pcrel_offset */
317 /* A 32 bit absolute relocation. */
318 HOWTO (R_LM32_32
, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE
, /* pc_relative */
324 complain_overflow_bitfield
,/* complain_on_overflow */
325 bfd_elf_generic_reloc
, /* special_function */
326 "R_LM32_32", /* name */
327 FALSE
, /* partial_inplace */
329 0xffffffff, /* dst_mask */
330 FALSE
), /* pcrel_offset */
332 HOWTO (R_LM32_HI16
, /* type */
334 2, /* size (0 = byte, 1 = short, 2 = long) */
336 FALSE
, /* pc_relative */
338 complain_overflow_bitfield
,/* complain_on_overflow */
339 bfd_elf_generic_reloc
, /* special_function */
340 "R_LM32_HI16", /* name */
341 FALSE
, /* partial_inplace */
343 0xffff, /* dst_mask */
344 FALSE
), /* pcrel_offset */
346 HOWTO (R_LM32_LO16
, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE
, /* pc_relative */
352 complain_overflow_dont
, /* complain_on_overflow */
353 bfd_elf_generic_reloc
, /* special_function */
354 "R_LM32_LO16", /* name */
355 FALSE
, /* partial_inplace */
357 0xffff, /* dst_mask */
358 FALSE
), /* pcrel_offset */
360 HOWTO (R_LM32_GPREL16
, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 FALSE
, /* pc_relative */
366 complain_overflow_dont
, /* complain_on_overflow */
367 lm32_elf_gprel_reloc
, /* special_function */
368 "R_LM32_GPREL16", /* name */
369 FALSE
, /* partial_inplace */
371 0xffff, /* dst_mask */
372 FALSE
), /* pcrel_offset */
374 HOWTO (R_LM32_CALL
, /* type */
376 2, /* size (0 = byte, 1 = short, 2 = long) */
378 TRUE
, /* pc_relative */
380 complain_overflow_signed
, /* complain_on_overflow */
381 bfd_elf_generic_reloc
, /* special_function */
382 "R_LM32_CALL", /* name */
383 FALSE
, /* partial_inplace */
385 0x3ffffff, /* dst_mask */
386 TRUE
), /* pcrel_offset */
388 HOWTO (R_LM32_BRANCH
, /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 TRUE
, /* pc_relative */
394 complain_overflow_signed
, /* complain_on_overflow */
395 bfd_elf_generic_reloc
, /* special_function */
396 "R_LM32_BRANCH", /* name */
397 FALSE
, /* partial_inplace */
399 0xffff, /* dst_mask */
400 TRUE
), /* pcrel_offset */
402 /* GNU extension to record C++ vtable hierarchy. */
403 HOWTO (R_LM32_GNU_VTINHERIT
, /* type */
405 2, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE
, /* pc_relative */
409 complain_overflow_dont
, /* complain_on_overflow */
410 NULL
, /* special_function */
411 "R_LM32_GNU_VTINHERIT", /* name */
412 FALSE
, /* partial_inplace */
415 FALSE
), /* pcrel_offset */
417 /* GNU extension to record C++ vtable member usage. */
418 HOWTO (R_LM32_GNU_VTENTRY
, /* type */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
422 FALSE
, /* pc_relative */
424 complain_overflow_dont
, /* complain_on_overflow */
425 _bfd_elf_rel_vtable_reloc_fn
,/* special_function */
426 "R_LM32_GNU_VTENTRY", /* name */
427 FALSE
, /* partial_inplace */
430 FALSE
), /* pcrel_offset */
432 HOWTO (R_LM32_16_GOT
, /* type */
434 2, /* size (0 = byte, 1 = short, 2 = long) */
436 FALSE
, /* pc_relative */
438 complain_overflow_signed
, /* complain_on_overflow */
439 bfd_elf_generic_reloc
, /* special_function */
440 "R_LM32_16_GOT", /* name */
441 FALSE
, /* partial_inplace */
443 0xffff, /* dst_mask */
444 FALSE
), /* pcrel_offset */
446 HOWTO (R_LM32_GOTOFF_HI16
, /* type */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
450 FALSE
, /* pc_relative */
452 complain_overflow_dont
, /* complain_on_overflow */
453 bfd_elf_generic_reloc
, /* special_function */
454 "R_LM32_GOTOFF_HI16", /* name */
455 FALSE
, /* partial_inplace */
456 0xffff, /* src_mask */
457 0xffff, /* dst_mask */
458 FALSE
), /* pcrel_offset */
460 HOWTO (R_LM32_GOTOFF_LO16
, /* type */
462 2, /* size (0 = byte, 1 = short, 2 = long) */
464 FALSE
, /* pc_relative */
466 complain_overflow_dont
, /* complain_on_overflow */
467 bfd_elf_generic_reloc
, /* special_function */
468 "R_LM32_GOTOFF_LO16", /* name */
469 FALSE
, /* partial_inplace */
470 0xffff, /* src_mask */
471 0xffff, /* dst_mask */
472 FALSE
), /* pcrel_offset */
474 HOWTO (R_LM32_COPY
, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 FALSE
, /* pc_relative */
480 complain_overflow_bitfield
, /* complain_on_overflow */
481 bfd_elf_generic_reloc
, /* special_function */
482 "R_LM32_COPY", /* name */
483 FALSE
, /* partial_inplace */
484 0xffffffff, /* src_mask */
485 0xffffffff, /* dst_mask */
486 FALSE
), /* pcrel_offset */
488 HOWTO (R_LM32_GLOB_DAT
, /* type */
490 2, /* size (0 = byte, 1 = short, 2 = long) */
492 FALSE
, /* pc_relative */
494 complain_overflow_bitfield
, /* complain_on_overflow */
495 bfd_elf_generic_reloc
, /* special_function */
496 "R_LM32_GLOB_DAT", /* name */
497 FALSE
, /* partial_inplace */
498 0xffffffff, /* src_mask */
499 0xffffffff, /* dst_mask */
500 FALSE
), /* pcrel_offset */
502 HOWTO (R_LM32_JMP_SLOT
, /* type */
504 2, /* size (0 = byte, 1 = short, 2 = long) */
506 FALSE
, /* pc_relative */
508 complain_overflow_bitfield
, /* complain_on_overflow */
509 bfd_elf_generic_reloc
, /* special_function */
510 "R_LM32_JMP_SLOT", /* name */
511 FALSE
, /* partial_inplace */
512 0xffffffff, /* src_mask */
513 0xffffffff, /* dst_mask */
514 FALSE
), /* pcrel_offset */
516 HOWTO (R_LM32_RELATIVE
, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE
, /* pc_relative */
522 complain_overflow_bitfield
, /* complain_on_overflow */
523 bfd_elf_generic_reloc
, /* special_function */
524 "R_LM32_RELATIVE", /* name */
525 FALSE
, /* partial_inplace */
526 0xffffffff, /* src_mask */
527 0xffffffff, /* dst_mask */
528 FALSE
), /* pcrel_offset */
532 /* Map BFD reloc types to lm32 ELF reloc types. */
534 struct lm32_reloc_map
536 bfd_reloc_code_real_type bfd_reloc_val
;
537 unsigned char elf_reloc_val
;
540 static const struct lm32_reloc_map lm32_reloc_map
[] =
542 { BFD_RELOC_NONE
, R_LM32_NONE
},
543 { BFD_RELOC_8
, R_LM32_8
},
544 { BFD_RELOC_16
, R_LM32_16
},
545 { BFD_RELOC_32
, R_LM32_32
},
546 { BFD_RELOC_HI16
, R_LM32_HI16
},
547 { BFD_RELOC_LO16
, R_LM32_LO16
},
548 { BFD_RELOC_GPREL16
, R_LM32_GPREL16
},
549 { BFD_RELOC_LM32_CALL
, R_LM32_CALL
},
550 { BFD_RELOC_LM32_BRANCH
, R_LM32_BRANCH
},
551 { BFD_RELOC_VTABLE_INHERIT
, R_LM32_GNU_VTINHERIT
},
552 { BFD_RELOC_VTABLE_ENTRY
, R_LM32_GNU_VTENTRY
},
553 { BFD_RELOC_LM32_16_GOT
, R_LM32_16_GOT
},
554 { BFD_RELOC_LM32_GOTOFF_HI16
, R_LM32_GOTOFF_HI16
},
555 { BFD_RELOC_LM32_GOTOFF_LO16
, R_LM32_GOTOFF_LO16
},
556 { BFD_RELOC_LM32_COPY
, R_LM32_COPY
},
557 { BFD_RELOC_LM32_GLOB_DAT
, R_LM32_GLOB_DAT
},
558 { BFD_RELOC_LM32_JMP_SLOT
, R_LM32_JMP_SLOT
},
559 { BFD_RELOC_LM32_RELATIVE
, R_LM32_RELATIVE
},
562 static reloc_howto_type
*
563 lm32_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
564 bfd_reloc_code_real_type code
)
568 for (i
= 0; i
< sizeof (lm32_reloc_map
) / sizeof (lm32_reloc_map
[0]); i
++)
569 if (lm32_reloc_map
[i
].bfd_reloc_val
== code
)
570 return &lm32_elf_howto_table
[lm32_reloc_map
[i
].elf_reloc_val
];
574 static reloc_howto_type
*
575 lm32_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
581 i
< sizeof (lm32_elf_howto_table
) / sizeof (lm32_elf_howto_table
[0]);
583 if (lm32_elf_howto_table
[i
].name
!= NULL
584 && strcasecmp (lm32_elf_howto_table
[i
].name
, r_name
) == 0)
585 return &lm32_elf_howto_table
[i
];
591 /* Set the howto pointer for an Lattice Mico32 ELF reloc. */
594 lm32_info_to_howto_rela (bfd
*abfd ATTRIBUTE_UNUSED
,
596 Elf_Internal_Rela
*dst
)
600 r_type
= ELF32_R_TYPE (dst
->r_info
);
601 BFD_ASSERT (r_type
< (unsigned int) R_LM32_max
);
602 cache_ptr
->howto
= &lm32_elf_howto_table
[r_type
];
605 /* Set the right machine number for an Lattice Mico32 ELF file. */
608 lm32_elf_object_p (bfd
*abfd
)
610 return bfd_default_set_arch_mach (abfd
, bfd_arch_lm32
, bfd_mach_lm32
);
613 /* Set machine type flags just before file is written out. */
616 lm32_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
618 elf_elfheader (abfd
)->e_machine
= EM_LATTICEMICO32
;
619 elf_elfheader (abfd
)->e_flags
&=~ EF_LM32_MACH
;
620 switch (bfd_get_mach (abfd
))
623 elf_elfheader (abfd
)->e_flags
|= E_LM32_MACH
;
630 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
631 dangerous relocation. */
634 lm32_elf_assign_gp (bfd
*output_bfd
, bfd_vma
*pgp
)
640 /* If we've already figured out what GP will be, just return it. */
641 *pgp
= _bfd_get_gp_value (output_bfd
);
645 count
= bfd_get_symcount (output_bfd
);
646 sym
= bfd_get_outsymbols (output_bfd
);
648 /* The linker script will have created a symbol named `_gp' with the
649 appropriate value. */
654 for (i
= 0; i
< count
; i
++, sym
++)
658 name
= bfd_asymbol_name (*sym
);
659 if (*name
== '_' && strcmp (name
, "_gp") == 0)
661 *pgp
= bfd_asymbol_value (*sym
);
662 _bfd_set_gp_value (output_bfd
, *pgp
);
670 /* Only get the error once. */
672 _bfd_set_gp_value (output_bfd
, *pgp
);
679 /* We have to figure out the gp value, so that we can adjust the
680 symbol value correctly. We look up the symbol _gp in the output
681 BFD. If we can't find it, we're stuck. We cache it in the ELF
682 target data. We don't need to adjust the symbol value for an
683 external symbol if we are producing relocatable output. */
685 static bfd_reloc_status_type
686 lm32_elf_final_gp (bfd
*output_bfd
, asymbol
*symbol
, bfd_boolean relocatable
,
687 char **error_message
, bfd_vma
*pgp
)
689 if (bfd_is_und_section (symbol
->section
) && !relocatable
)
692 return bfd_reloc_undefined
;
695 *pgp
= _bfd_get_gp_value (output_bfd
);
696 if (*pgp
== 0 && (!relocatable
|| (symbol
->flags
& BSF_SECTION_SYM
) != 0))
700 /* Make up a value. */
701 *pgp
= symbol
->section
->output_section
->vma
+ 0x4000;
702 _bfd_set_gp_value (output_bfd
, *pgp
);
704 else if (!lm32_elf_assign_gp (output_bfd
, pgp
))
708 _("global pointer relative relocation when _gp not defined");
709 return bfd_reloc_dangerous
;
716 static bfd_reloc_status_type
717 lm32_elf_do_gprel_relocate (bfd
*abfd
,
718 reloc_howto_type
*howto
,
719 asection
*input_section ATTRIBUTE_UNUSED
,
722 bfd_vma symbol_value
,
725 return _bfd_final_link_relocate (howto
, abfd
, input_section
,
726 data
, offset
, symbol_value
, addend
);
729 static bfd_reloc_status_type
730 lm32_elf_gprel_reloc (bfd
*abfd
,
731 arelent
*reloc_entry
,
734 asection
*input_section
,
740 bfd_reloc_status_type r
;
742 if (output_bfd
!= (bfd
*) NULL
743 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
744 && (!reloc_entry
->howto
->partial_inplace
|| reloc_entry
->addend
== 0))
746 reloc_entry
->address
+= input_section
->output_offset
;
750 if (output_bfd
!= NULL
)
753 relocation
= symbol
->value
754 + symbol
->section
->output_section
->vma
+ symbol
->section
->output_offset
;
757 lm32_elf_final_gp (abfd
, symbol
, FALSE
, msg
, &gp
)) == bfd_reloc_ok
)
759 relocation
= relocation
+ reloc_entry
->addend
- gp
;
760 reloc_entry
->addend
= 0;
761 if ((signed) relocation
< -32768 || (signed) relocation
> 32767)
763 *msg
= _("global pointer relative address out of range");
764 r
= bfd_reloc_outofrange
;
768 r
= lm32_elf_do_gprel_relocate (abfd
, reloc_entry
->howto
,
770 data
, reloc_entry
->address
,
771 relocation
, reloc_entry
->addend
);
778 /* Find the segment number in which OSEC, and output section, is
782 _lm32fdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
784 struct elf_segment_map
*m
;
785 Elf_Internal_Phdr
*p
;
787 /* Find the segment that contains the output_section. */
788 for (m
= elf_tdata (output_bfd
)->segment_map
,
789 p
= elf_tdata (output_bfd
)->phdr
;
795 for (i
= m
->count
- 1; i
>= 0; i
--)
796 if (m
->sections
[i
] == osec
)
803 return p
- elf_tdata (output_bfd
)->phdr
;
806 /* Determine if an output section is read-only. */
808 inline static bfd_boolean
809 _lm32fdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
811 unsigned seg
= _lm32fdpic_osec_to_segment (output_bfd
, osec
);
813 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
816 /* Relocate a section */
819 lm32_elf_relocate_section (bfd
*output_bfd
,
820 struct bfd_link_info
*info
,
822 asection
*input_section
,
824 Elf_Internal_Rela
*relocs
,
825 Elf_Internal_Sym
*local_syms
,
826 asection
**local_sections
)
828 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
829 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
830 Elf_Internal_Rela
*rel
, *relend
;
831 struct elf_lm32_link_hash_table
*htab
= lm32_elf_hash_table (info
);
833 bfd_vma
*local_got_offsets
;
839 dynobj
= htab
->root
.dynobj
;
840 local_got_offsets
= elf_local_got_offsets (input_bfd
);
844 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
845 sym_hashes
= elf_sym_hashes (input_bfd
);
848 relend
= relocs
+ input_section
->reloc_count
;
849 for (; rel
< relend
; rel
++)
851 reloc_howto_type
*howto
;
853 unsigned long r_symndx
;
854 Elf_Internal_Sym
*sym
;
856 struct elf_link_hash_entry
*h
;
859 bfd_reloc_status_type r
;
860 const char *name
= NULL
;
862 r_symndx
= ELF32_R_SYM (rel
->r_info
);
863 r_type
= ELF32_R_TYPE (rel
->r_info
);
865 if (r_type
== R_LM32_GNU_VTENTRY
866 || r_type
== R_LM32_GNU_VTINHERIT
)
873 howto
= lm32_elf_howto_table
+ r_type
;
875 if (r_symndx
< symtab_hdr
->sh_info
)
877 /* It's a local symbol. */
878 sym
= local_syms
+ r_symndx
;
879 sec
= local_sections
[r_symndx
];
880 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
881 name
= bfd_elf_string_from_elf_section
882 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
883 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
887 /* It's a global symbol. */
888 bfd_boolean unresolved_reloc
;
891 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
892 r_symndx
, symtab_hdr
, sym_hashes
,
894 unresolved_reloc
, warned
);
895 name
= h
->root
.root
.string
;
898 if (sec
!= NULL
&& discarded_section (sec
))
899 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
900 rel
, 1, relend
, howto
, 0, contents
);
902 if (info
->relocatable
)
904 /* This is a relocatable link. We don't have to change
905 anything, unless the reloc is against a section symbol,
906 in which case we have to adjust according to where the
907 section symbol winds up in the output section. */
908 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
911 /* If partial_inplace, we need to store any additional addend
912 back in the section. */
913 if (! howto
->partial_inplace
)
916 /* Shouldn't reach here. */
925 if (!lm32_elf_assign_gp (output_bfd
, &gp
))
926 r
= bfd_reloc_dangerous
;
929 relocation
= relocation
+ rel
->r_addend
- gp
;
931 if ((signed)relocation
< -32768 || (signed)relocation
> 32767)
932 r
= bfd_reloc_outofrange
;
935 r
= _bfd_final_link_relocate (howto
, input_bfd
,
936 input_section
, contents
,
937 rel
->r_offset
, relocation
,
943 /* Relocation is to the entry for this symbol in the global
945 BFD_ASSERT (sgot
!= NULL
);
952 BFD_ASSERT (off
!= (bfd_vma
) -1);
954 dyn
= htab
->root
.dynamic_sections_created
;
955 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
962 /* This is actually a static link, or it is a
963 -Bsymbolic link and the symbol is defined
964 locally, or the symbol was forced to be local
965 because of a version file. We must initialize
966 this entry in the global offset table. Since the
967 offset must always be a multiple of 4, we use the
968 least significant bit to record whether we have
969 initialized it already.
971 When doing a dynamic link, we create a .rela.got
972 relocation entry to initialize the value. This
973 is done in the finish_dynamic_symbol routine. */
978 /* Write entry in GOT */
979 bfd_put_32 (output_bfd
, relocation
,
980 sgot
->contents
+ off
);
981 /* Create entry in .rofixup pointing to GOT entry. */
982 if (IS_FDPIC (output_bfd
) && h
->root
.type
!= bfd_link_hash_undefweak
)
984 _lm32fdpic_add_rofixup (output_bfd
,
985 lm32fdpic_fixup32_section
987 sgot
->output_section
->vma
988 + sgot
->output_offset
991 /* Mark GOT entry as having been written. */
996 relocation
= sgot
->output_offset
+ off
;
1003 BFD_ASSERT (local_got_offsets
!= NULL
1004 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1006 /* Get offset into GOT table. */
1007 off
= local_got_offsets
[r_symndx
];
1009 /* The offset must always be a multiple of 4. We use
1010 the least significant bit to record whether we have
1011 already processed this entry. */
1016 /* Write entry in GOT. */
1017 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1018 /* Create entry in .rofixup pointing to GOT entry. */
1019 if (IS_FDPIC (output_bfd
))
1021 _lm32fdpic_add_rofixup (output_bfd
,
1022 lm32fdpic_fixup32_section
1024 sgot
->output_section
->vma
1025 + sgot
->output_offset
1032 Elf_Internal_Rela outrel
;
1034 /* We need to generate a R_LM32_RELATIVE reloc
1035 for the dynamic linker. */
1036 srelgot
= bfd_get_linker_section (dynobj
,
1038 BFD_ASSERT (srelgot
!= NULL
);
1040 outrel
.r_offset
= (sgot
->output_section
->vma
1041 + sgot
->output_offset
1043 outrel
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
1044 outrel
.r_addend
= relocation
;
1045 loc
= srelgot
->contents
;
1046 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
1047 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
1048 ++srelgot
->reloc_count
;
1051 local_got_offsets
[r_symndx
] |= 1;
1055 relocation
= sgot
->output_offset
+ off
;
1058 /* Addend should be zero. */
1059 if (rel
->r_addend
!= 0)
1060 (*_bfd_error_handler
) (_("internal error: addend should be zero for R_LM32_16_GOT"));
1062 r
= _bfd_final_link_relocate (howto
,
1071 case R_LM32_GOTOFF_LO16
:
1072 case R_LM32_GOTOFF_HI16
:
1073 /* Relocation is offset from GOT. */
1074 BFD_ASSERT (sgot
!= NULL
);
1075 relocation
-= sgot
->output_section
->vma
;
1076 /* Account for sign-extension. */
1077 if ((r_type
== R_LM32_GOTOFF_HI16
)
1078 && ((relocation
+ rel
->r_addend
) & 0x8000))
1079 rel
->r_addend
+= 0x10000;
1080 r
= _bfd_final_link_relocate (howto
,
1090 if (IS_FDPIC (output_bfd
))
1092 if ((!h
) || (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
1094 /* Only create .rofixup entries for relocs in loadable sections. */
1095 if ((bfd_get_section_flags (output_bfd
, input_section
->output_section
)
1096 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
1099 /* Check address to be modified is writable. */
1100 if (_lm32fdpic_osec_readonly_p (output_bfd
,
1104 info
->callbacks
->warning
1106 _("cannot emit dynamic relocations in read-only section"),
1107 name
, input_bfd
, input_section
, rel
->r_offset
);
1110 /* Create entry in .rofixup section. */
1111 _lm32fdpic_add_rofixup (output_bfd
,
1112 lm32fdpic_fixup32_section (info
),
1113 input_section
->output_section
->vma
1114 + input_section
->output_offset
1122 r
= _bfd_final_link_relocate (howto
,
1133 if (r
!= bfd_reloc_ok
)
1135 const char *msg
= NULL
;
1138 lm32_info_to_howto_rela (input_bfd
, &bfd_reloc
, rel
);
1139 howto
= bfd_reloc
.howto
;
1142 name
= h
->root
.root
.string
;
1145 name
= (bfd_elf_string_from_elf_section
1146 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
1147 if (name
== NULL
|| *name
== '\0')
1148 name
= bfd_section_name (input_bfd
, sec
);
1153 case bfd_reloc_overflow
:
1155 && (h
->root
.type
== bfd_link_hash_undefweak
))
1157 if (! ((*info
->callbacks
->reloc_overflow
)
1158 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1159 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
)))
1163 case bfd_reloc_undefined
:
1164 if (! ((*info
->callbacks
->undefined_symbol
)
1165 (info
, name
, input_bfd
, input_section
,
1166 rel
->r_offset
, TRUE
)))
1170 case bfd_reloc_outofrange
:
1171 msg
= _("internal error: out of range error");
1174 case bfd_reloc_notsupported
:
1175 msg
= _("internal error: unsupported relocation error");
1178 case bfd_reloc_dangerous
:
1179 msg
= _("internal error: dangerous error");
1183 msg
= _("internal error: unknown error");
1187 if (!((*info
->callbacks
->warning
)
1188 (info
, msg
, name
, input_bfd
, input_section
,
1200 lm32_elf_gc_mark_hook (asection
*sec
,
1201 struct bfd_link_info
*info
,
1202 Elf_Internal_Rela
*rel
,
1203 struct elf_link_hash_entry
*h
,
1204 Elf_Internal_Sym
*sym
)
1207 switch (ELF32_R_TYPE (rel
->r_info
))
1209 case R_LM32_GNU_VTINHERIT
:
1210 case R_LM32_GNU_VTENTRY
:
1214 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1218 lm32_elf_gc_sweep_hook (bfd
*abfd
,
1219 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1221 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
)
1223 /* Update the got entry reference counts for the section being removed. */
1224 Elf_Internal_Shdr
*symtab_hdr
;
1225 struct elf_link_hash_entry
**sym_hashes
;
1226 bfd_signed_vma
*local_got_refcounts
;
1227 const Elf_Internal_Rela
*rel
, *relend
;
1229 elf_section_data (sec
)->local_dynrel
= NULL
;
1231 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1232 sym_hashes
= elf_sym_hashes (abfd
);
1233 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1235 relend
= relocs
+ sec
->reloc_count
;
1236 for (rel
= relocs
; rel
< relend
; rel
++)
1238 unsigned long r_symndx
;
1239 struct elf_link_hash_entry
*h
= NULL
;
1241 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1242 if (r_symndx
>= symtab_hdr
->sh_info
)
1244 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1245 while (h
->root
.type
== bfd_link_hash_indirect
1246 || h
->root
.type
== bfd_link_hash_warning
)
1247 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1250 switch (ELF32_R_TYPE (rel
->r_info
))
1255 if (h
->got
.refcount
> 0)
1260 if (local_got_refcounts
&& local_got_refcounts
[r_symndx
] > 0)
1261 local_got_refcounts
[r_symndx
]--;
1272 /* Look through the relocs for a section during the first phase. */
1275 lm32_elf_check_relocs (bfd
*abfd
,
1276 struct bfd_link_info
*info
,
1278 const Elf_Internal_Rela
*relocs
)
1280 Elf_Internal_Shdr
*symtab_hdr
;
1281 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
1282 const Elf_Internal_Rela
*rel
;
1283 const Elf_Internal_Rela
*rel_end
;
1284 struct elf_lm32_link_hash_table
*htab
;
1287 if (info
->relocatable
)
1290 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1291 sym_hashes
= elf_sym_hashes (abfd
);
1292 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof (Elf32_External_Sym
);
1293 if (!elf_bad_symtab (abfd
))
1294 sym_hashes_end
-= symtab_hdr
->sh_info
;
1296 htab
= lm32_elf_hash_table (info
);
1300 dynobj
= htab
->root
.dynobj
;
1302 rel_end
= relocs
+ sec
->reloc_count
;
1303 for (rel
= relocs
; rel
< rel_end
; rel
++)
1306 struct elf_link_hash_entry
*h
;
1307 unsigned long r_symndx
;
1309 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1310 r_type
= ELF32_R_TYPE (rel
->r_info
);
1311 if (r_symndx
< symtab_hdr
->sh_info
)
1315 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1316 while (h
->root
.type
== bfd_link_hash_indirect
1317 || h
->root
.type
== bfd_link_hash_warning
)
1318 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1321 /* Some relocs require a global offset table. */
1322 if (htab
->sgot
== NULL
)
1327 case R_LM32_GOTOFF_HI16
:
1328 case R_LM32_GOTOFF_LO16
:
1330 htab
->root
.dynobj
= dynobj
= abfd
;
1331 if (! create_got_section (dynobj
, info
))
1337 /* Some relocs require a rofixup table. */
1338 if (IS_FDPIC (abfd
))
1343 /* FDPIC requires a GOT if there is a .rofixup section
1344 (Normal ELF doesn't). */
1346 htab
->root
.dynobj
= dynobj
= abfd
;
1347 if (! create_got_section (dynobj
, info
))
1349 /* Create .rofixup section */
1350 if (htab
->sfixup32
== NULL
)
1352 if (! create_rofixup_section (dynobj
, info
))
1357 case R_LM32_GOTOFF_HI16
:
1358 case R_LM32_GOTOFF_LO16
:
1359 /* Create .rofixup section. */
1360 if (htab
->sfixup32
== NULL
)
1363 htab
->root
.dynobj
= dynobj
= abfd
;
1364 if (! create_rofixup_section (dynobj
, info
))
1375 h
->got
.refcount
+= 1;
1378 bfd_signed_vma
*local_got_refcounts
;
1380 /* This is a global offset table entry for a local symbol. */
1381 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1382 if (local_got_refcounts
== NULL
)
1386 size
= symtab_hdr
->sh_info
;
1387 size
*= sizeof (bfd_signed_vma
);
1388 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1389 if (local_got_refcounts
== NULL
)
1391 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1393 local_got_refcounts
[r_symndx
] += 1;
1397 /* This relocation describes the C++ object vtable hierarchy.
1398 Reconstruct it for later use during GC. */
1399 case R_LM32_GNU_VTINHERIT
:
1400 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1404 /* This relocation describes which C++ vtable entries are actually
1405 used. Record for later use during GC. */
1406 case R_LM32_GNU_VTENTRY
:
1407 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1417 /* Finish up the dynamic sections. */
1420 lm32_elf_finish_dynamic_sections (bfd
*output_bfd
,
1421 struct bfd_link_info
*info
)
1423 struct elf_lm32_link_hash_table
*htab
;
1428 htab
= lm32_elf_hash_table (info
);
1432 dynobj
= htab
->root
.dynobj
;
1434 sgot
= htab
->sgotplt
;
1435 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
1437 if (htab
->root
.dynamic_sections_created
)
1440 Elf32_External_Dyn
*dyncon
, *dynconend
;
1442 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
1444 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1445 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
1447 for (; dyncon
< dynconend
; dyncon
++)
1449 Elf_Internal_Dyn dyn
;
1452 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1460 s
= htab
->sgot
->output_section
;
1463 s
= htab
->srelplt
->output_section
;
1465 BFD_ASSERT (s
!= NULL
);
1466 dyn
.d_un
.d_ptr
= s
->vma
;
1467 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1471 s
= htab
->srelplt
->output_section
;
1472 BFD_ASSERT (s
!= NULL
);
1473 dyn
.d_un
.d_val
= s
->size
;
1474 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1478 /* My reading of the SVR4 ABI indicates that the
1479 procedure linkage table relocs (DT_JMPREL) should be
1480 included in the overall relocs (DT_RELA). This is
1481 what Solaris does. However, UnixWare can not handle
1482 that case. Therefore, we override the DT_RELASZ entry
1483 here to make it not include the JMPREL relocs. Since
1484 the linker script arranges for .rela.plt to follow all
1485 other relocation sections, we don't have to worry
1486 about changing the DT_RELA entry. */
1487 if (htab
->srelplt
!= NULL
)
1489 s
= htab
->srelplt
->output_section
;
1490 dyn
.d_un
.d_val
-= s
->size
;
1492 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1497 /* Fill in the first entry in the procedure linkage table. */
1499 if (splt
&& splt
->size
> 0)
1503 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
1504 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
1505 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
1506 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
1507 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
1512 /* addr = .got + 4 */
1513 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
1514 bfd_put_32 (output_bfd
,
1515 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
1517 bfd_put_32 (output_bfd
,
1518 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
1519 splt
->contents
+ 4);
1520 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
1521 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
1522 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
1525 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1530 /* Fill in the first three entries in the global offset table. */
1531 if (sgot
&& sgot
->size
> 0)
1534 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1536 bfd_put_32 (output_bfd
,
1537 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1539 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
1540 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
1542 /* FIXME: This can be null if create_dynamic_sections wasn't called. */
1543 if (elf_section_data (sgot
->output_section
) != NULL
)
1544 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1547 if (lm32fdpic_fixup32_section (info
))
1549 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
1550 bfd_vma got_value
= hgot
->root
.u
.def
.value
1551 + hgot
->root
.u
.def
.section
->output_section
->vma
1552 + hgot
->root
.u
.def
.section
->output_offset
;
1553 struct bfd_link_hash_entry
*hend
;
1555 /* Last entry is pointer to GOT. */
1556 _lm32fdpic_add_rofixup (output_bfd
, lm32fdpic_fixup32_section (info
), got_value
);
1558 /* Check we wrote enough entries. */
1559 if (lm32fdpic_fixup32_section (info
)->size
1560 != (lm32fdpic_fixup32_section (info
)->reloc_count
* 4))
1562 (*_bfd_error_handler
)
1563 ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
1564 lm32fdpic_fixup32_section (info
)->size
/4,
1565 lm32fdpic_fixup32_section (info
)->reloc_count
);
1569 hend
= bfd_link_hash_lookup (info
->hash
, "__ROFIXUP_END__",
1570 FALSE
, FALSE
, TRUE
);
1572 && (hend
->type
== bfd_link_hash_defined
1573 || hend
->type
== bfd_link_hash_defweak
))
1576 lm32fdpic_fixup32_section (info
)->output_section
->vma
1577 + lm32fdpic_fixup32_section (info
)->output_offset
1578 + lm32fdpic_fixup32_section (info
)->size
1579 - hend
->u
.def
.section
->output_section
->vma
1580 - hend
->u
.def
.section
->output_offset
;
1581 BFD_ASSERT (hend
->u
.def
.value
== value
);
1582 if (hend
->u
.def
.value
!= value
)
1584 (*_bfd_error_handler
)
1585 ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend
->u
.def
.value
, value
);
1594 /* Finish up dynamic symbol handling. We set the contents of various
1595 dynamic sections here. */
1598 lm32_elf_finish_dynamic_symbol (bfd
*output_bfd
,
1599 struct bfd_link_info
*info
,
1600 struct elf_link_hash_entry
*h
,
1601 Elf_Internal_Sym
*sym
)
1603 struct elf_lm32_link_hash_table
*htab
;
1606 htab
= lm32_elf_hash_table (info
);
1610 if (h
->plt
.offset
!= (bfd_vma
) -1)
1618 Elf_Internal_Rela rela
;
1620 /* This symbol has an entry in the procedure linkage table. Set
1622 BFD_ASSERT (h
->dynindx
!= -1);
1625 sgot
= htab
->sgotplt
;
1626 srela
= htab
->srelplt
;
1627 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1629 /* Get the index in the procedure linkage table which
1630 corresponds to this symbol. This is the index of this symbol
1631 in all the symbols for which we are making plt entries. The
1632 first entry in the procedure linkage table is reserved. */
1633 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1635 /* Get the offset into the .got table of the entry that
1636 corresponds to this function. Each .got entry is 4 bytes.
1637 The first three are reserved. */
1638 got_offset
= (plt_index
+ 3) * 4;
1640 /* Fill in the entry in the procedure linkage table. */
1650 /* Fill in the entry in the global offset table. */
1651 bfd_put_32 (output_bfd
,
1652 (splt
->output_section
->vma
1653 + splt
->output_offset
1655 + 12), /* same offset */
1656 sgot
->contents
+ got_offset
);
1658 /* Fill in the entry in the .rela.plt section. */
1659 rela
.r_offset
= (sgot
->output_section
->vma
1660 + sgot
->output_offset
1662 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_JMP_SLOT
);
1664 loc
= srela
->contents
;
1665 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
1666 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1668 if (!h
->def_regular
)
1670 /* Mark the symbol as undefined, rather than as defined in
1671 the .plt section. Leave the value alone. */
1672 sym
->st_shndx
= SHN_UNDEF
;
1677 if (h
->got
.offset
!= (bfd_vma
) -1)
1681 Elf_Internal_Rela rela
;
1683 /* This symbol has an entry in the global offset table. Set it
1686 srela
= htab
->srelgot
;
1687 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1689 rela
.r_offset
= (sgot
->output_section
->vma
1690 + sgot
->output_offset
1691 + (h
->got
.offset
&~ 1));
1693 /* If this is a -Bsymbolic link, and the symbol is defined
1694 locally, we just want to emit a RELATIVE reloc. Likewise if
1695 the symbol was forced to be local because of a version file.
1696 The entry in the global offset table will already have been
1697 initialized in the relocate_section function. */
1704 rela
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
1705 rela
.r_addend
= (h
->root
.u
.def
.value
1706 + h
->root
.u
.def
.section
->output_section
->vma
1707 + h
->root
.u
.def
.section
->output_offset
);
1711 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
1712 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1713 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_GLOB_DAT
);
1717 loc
= srela
->contents
;
1718 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
1719 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1720 ++srela
->reloc_count
;
1726 Elf_Internal_Rela rela
;
1728 /* This symbols needs a copy reloc. Set it up. */
1729 BFD_ASSERT (h
->dynindx
!= -1
1730 && (h
->root
.type
== bfd_link_hash_defined
1731 || h
->root
.type
== bfd_link_hash_defweak
));
1733 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
1734 BFD_ASSERT (s
!= NULL
);
1736 rela
.r_offset
= (h
->root
.u
.def
.value
1737 + h
->root
.u
.def
.section
->output_section
->vma
1738 + h
->root
.u
.def
.section
->output_offset
);
1739 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_COPY
);
1742 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
1743 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1747 /* Mark some specially defined symbols as absolute. */
1748 if (h
== htab
->root
.hdynamic
|| h
== htab
->root
.hgot
)
1749 sym
->st_shndx
= SHN_ABS
;
1754 static enum elf_reloc_type_class
1755 lm32_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
1757 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1759 case R_LM32_RELATIVE
: return reloc_class_relative
;
1760 case R_LM32_JMP_SLOT
: return reloc_class_plt
;
1761 case R_LM32_COPY
: return reloc_class_copy
;
1762 default: return reloc_class_normal
;
1766 /* Adjust a symbol defined by a dynamic object and referenced by a
1767 regular object. The current definition is in some section of the
1768 dynamic object, but we're not including those sections. We have to
1769 change the definition to something the rest of the link can
1773 lm32_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1774 struct elf_link_hash_entry
*h
)
1776 struct elf_lm32_link_hash_table
*htab
;
1777 struct elf_lm32_link_hash_entry
*eh
;
1778 struct elf_lm32_dyn_relocs
*p
;
1782 dynobj
= elf_hash_table (info
)->dynobj
;
1784 /* Make sure we know what is going on here. */
1785 BFD_ASSERT (dynobj
!= NULL
1787 || h
->u
.weakdef
!= NULL
1790 && !h
->def_regular
)));
1792 /* If this is a function, put it in the procedure linkage table. We
1793 will fill in the contents of the procedure linkage table later,
1794 when we know the address of the .got section. */
1795 if (h
->type
== STT_FUNC
1801 && h
->root
.type
!= bfd_link_hash_undefweak
1802 && h
->root
.type
!= bfd_link_hash_undefined
)
1804 /* This case can occur if we saw a PLT reloc in an input
1805 file, but the symbol was never referred to by a dynamic
1806 object. In such a case, we don't actually need to build
1807 a procedure linkage table, and we can just do a PCREL
1809 h
->plt
.offset
= (bfd_vma
) -1;
1816 h
->plt
.offset
= (bfd_vma
) -1;
1818 /* If this is a weak symbol, and there is a real definition, the
1819 processor independent code will have arranged for us to see the
1820 real definition first, and we can just use the same value. */
1821 if (h
->u
.weakdef
!= NULL
)
1823 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1824 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1825 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1826 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1830 /* This is a reference to a symbol defined by a dynamic object which
1831 is not a function. */
1833 /* If we are creating a shared library, we must presume that the
1834 only references to the symbol are via the global offset table.
1835 For such cases we need not do anything here; the relocations will
1836 be handled correctly by relocate_section. */
1840 /* If there are no references to this symbol that do not use the
1841 GOT, we don't need to generate a copy reloc. */
1842 if (!h
->non_got_ref
)
1845 /* If -z nocopyreloc was given, we won't generate them either. */
1846 if (info
->nocopyreloc
)
1852 eh
= (struct elf_lm32_link_hash_entry
*) h
;
1853 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1855 s
= p
->sec
->output_section
;
1856 if (s
!= NULL
&& (s
->flags
& (SEC_READONLY
| SEC_HAS_CONTENTS
)) != 0)
1860 /* If we didn't find any dynamic relocs in sections which needs the
1861 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1869 /* We must allocate the symbol in our .dynbss section, which will
1870 become part of the .bss section of the executable. There will be
1871 an entry for this symbol in the .dynsym section. The dynamic
1872 object will contain position independent code, so all references
1873 from the dynamic object to this symbol will go through the global
1874 offset table. The dynamic linker will use the .dynsym entry to
1875 determine the address it must put in the global offset table, so
1876 both the dynamic object and the regular object will refer to the
1877 same memory location for the variable. */
1879 htab
= lm32_elf_hash_table (info
);
1884 BFD_ASSERT (s
!= NULL
);
1886 /* We must generate a R_LM32_COPY reloc to tell the dynamic linker
1887 to copy the initial value out of the dynamic object and into the
1888 runtime process image. We need to remember the offset into the
1889 .rela.bss section we are going to use. */
1890 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1894 srel
= htab
->srelbss
;
1895 BFD_ASSERT (srel
!= NULL
);
1896 srel
->size
+= sizeof (Elf32_External_Rela
);
1900 return _bfd_elf_adjust_dynamic_copy (h
, s
);
1903 /* Allocate space in .plt, .got and associated reloc sections for
1907 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1909 struct bfd_link_info
*info
;
1910 struct elf_lm32_link_hash_table
*htab
;
1911 struct elf_lm32_link_hash_entry
*eh
;
1912 struct elf_lm32_dyn_relocs
*p
;
1914 if (h
->root
.type
== bfd_link_hash_indirect
)
1917 info
= (struct bfd_link_info
*) inf
;
1918 htab
= lm32_elf_hash_table (info
);
1922 eh
= (struct elf_lm32_link_hash_entry
*) h
;
1924 if (htab
->root
.dynamic_sections_created
1925 && h
->plt
.refcount
> 0)
1927 /* Make sure this symbol is output as a dynamic symbol.
1928 Undefined weak syms won't yet be marked as dynamic. */
1929 if (h
->dynindx
== -1
1930 && !h
->forced_local
)
1932 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1936 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
1938 asection
*s
= htab
->splt
;
1940 /* If this is the first .plt entry, make room for the special
1943 s
->size
+= PLT_ENTRY_SIZE
;
1945 h
->plt
.offset
= s
->size
;
1947 /* If this symbol is not defined in a regular file, and we are
1948 not generating a shared library, then set the symbol to this
1949 location in the .plt. This is required to make function
1950 pointers compare as equal between the normal executable and
1951 the shared library. */
1955 h
->root
.u
.def
.section
= s
;
1956 h
->root
.u
.def
.value
= h
->plt
.offset
;
1959 /* Make room for this entry. */
1960 s
->size
+= PLT_ENTRY_SIZE
;
1962 /* We also need to make an entry in the .got.plt section, which
1963 will be placed in the .got section by the linker script. */
1964 htab
->sgotplt
->size
+= 4;
1966 /* We also need to make an entry in the .rel.plt section. */
1967 htab
->srelplt
->size
+= sizeof (Elf32_External_Rela
);
1971 h
->plt
.offset
= (bfd_vma
) -1;
1977 h
->plt
.offset
= (bfd_vma
) -1;
1981 if (h
->got
.refcount
> 0)
1986 /* Make sure this symbol is output as a dynamic symbol.
1987 Undefined weak syms won't yet be marked as dynamic. */
1988 if (h
->dynindx
== -1
1989 && !h
->forced_local
)
1991 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1997 h
->got
.offset
= s
->size
;
1999 dyn
= htab
->root
.dynamic_sections_created
;
2000 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
))
2001 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
2004 h
->got
.offset
= (bfd_vma
) -1;
2006 if (eh
->dyn_relocs
== NULL
)
2009 /* In the shared -Bsymbolic case, discard space allocated for
2010 dynamic pc-relative relocs against symbols which turn out to be
2011 defined in regular objects. For the normal shared case, discard
2012 space for pc-relative relocs that have become local due to symbol
2013 visibility changes. */
2021 struct elf_lm32_dyn_relocs
**pp
;
2023 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2025 p
->count
-= p
->pc_count
;
2034 /* Also discard relocs on undefined weak syms with non-default
2036 if (eh
->dyn_relocs
!= NULL
2037 && h
->root
.type
== bfd_link_hash_undefweak
)
2039 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2040 eh
->dyn_relocs
= NULL
;
2042 /* Make sure undefined weak symbols are output as a dynamic
2044 else if (h
->dynindx
== -1
2045 && !h
->forced_local
)
2047 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2054 /* For the non-shared case, discard space for relocs against
2055 symbols which turn out to need copy relocs or are not
2061 || (htab
->root
.dynamic_sections_created
2062 && (h
->root
.type
== bfd_link_hash_undefweak
2063 || h
->root
.type
== bfd_link_hash_undefined
))))
2065 /* Make sure this symbol is output as a dynamic symbol.
2066 Undefined weak syms won't yet be marked as dynamic. */
2067 if (h
->dynindx
== -1
2068 && !h
->forced_local
)
2070 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2074 /* If that succeeded, we know we'll be keeping all the
2076 if (h
->dynindx
!= -1)
2080 eh
->dyn_relocs
= NULL
;
2085 /* Finally, allocate space. */
2086 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2088 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2089 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2095 /* Find any dynamic relocs that apply to read-only sections. */
2098 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2100 struct elf_lm32_link_hash_entry
*eh
;
2101 struct elf_lm32_dyn_relocs
*p
;
2103 eh
= (struct elf_lm32_link_hash_entry
*) h
;
2104 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2106 asection
*s
= p
->sec
->output_section
;
2108 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2110 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2112 info
->flags
|= DF_TEXTREL
;
2114 /* Not an error, just cut short the traversal. */
2121 /* Set the sizes of the dynamic sections. */
2124 lm32_elf_size_dynamic_sections (bfd
*output_bfd
,
2125 struct bfd_link_info
*info
)
2127 struct elf_lm32_link_hash_table
*htab
;
2133 htab
= lm32_elf_hash_table (info
);
2137 dynobj
= htab
->root
.dynobj
;
2138 BFD_ASSERT (dynobj
!= NULL
);
2140 if (htab
->root
.dynamic_sections_created
)
2142 /* Set the contents of the .interp section to the interpreter. */
2143 if (info
->executable
)
2145 s
= bfd_get_linker_section (dynobj
, ".interp");
2146 BFD_ASSERT (s
!= NULL
);
2147 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2148 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2152 /* Set up .got offsets for local syms, and space for local dynamic
2154 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2156 bfd_signed_vma
*local_got
;
2157 bfd_signed_vma
*end_local_got
;
2158 bfd_size_type locsymcount
;
2159 Elf_Internal_Shdr
*symtab_hdr
;
2162 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2165 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2167 struct elf_lm32_dyn_relocs
*p
;
2169 for (p
= ((struct elf_lm32_dyn_relocs
*)
2170 elf_section_data (s
)->local_dynrel
);
2174 if (! bfd_is_abs_section (p
->sec
)
2175 && bfd_is_abs_section (p
->sec
->output_section
))
2177 /* Input section has been discarded, either because
2178 it is a copy of a linkonce section or due to
2179 linker script /DISCARD/, so we'll be discarding
2182 else if (p
->count
!= 0)
2184 srel
= elf_section_data (p
->sec
)->sreloc
;
2185 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2186 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2187 info
->flags
|= DF_TEXTREL
;
2192 local_got
= elf_local_got_refcounts (ibfd
);
2196 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2197 locsymcount
= symtab_hdr
->sh_info
;
2198 end_local_got
= local_got
+ locsymcount
;
2200 srel
= htab
->srelgot
;
2201 for (; local_got
< end_local_got
; ++local_got
)
2205 *local_got
= s
->size
;
2208 srel
->size
+= sizeof (Elf32_External_Rela
);
2211 *local_got
= (bfd_vma
) -1;
2215 /* Allocate global sym .plt and .got entries, and space for global
2216 sym dynamic relocs. */
2217 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2219 /* We now have determined the sizes of the various dynamic sections.
2220 Allocate memory for them. */
2222 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2224 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2229 || s
== htab
->sgotplt
2230 || s
== htab
->sdynbss
)
2232 /* Strip this section if we don't need it; see the
2235 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2237 if (s
->size
!= 0 && s
!= htab
->srelplt
)
2240 /* We use the reloc_count field as a counter if we need
2241 to copy relocs into the output file. */
2245 /* It's not one of our sections, so don't allocate space. */
2250 /* If we don't need this section, strip it from the
2251 output file. This is mostly to handle .rela.bss and
2252 .rela.plt. We must create both sections in
2253 create_dynamic_sections, because they must be created
2254 before the linker maps input sections to output
2255 sections. The linker does that before
2256 adjust_dynamic_symbol is called, and it is that
2257 function which decides whether anything needs to go
2258 into these sections. */
2259 s
->flags
|= SEC_EXCLUDE
;
2263 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2266 /* Allocate memory for the section contents. We use bfd_zalloc
2267 here in case unused entries are not reclaimed before the
2268 section's contents are written out. This should not happen,
2269 but this way if it does, we get a R_LM32_NONE reloc instead
2271 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2272 if (s
->contents
== NULL
)
2276 if (htab
->root
.dynamic_sections_created
)
2278 /* Add some entries to the .dynamic section. We fill in the
2279 values later, in lm32_elf_finish_dynamic_sections, but we
2280 must add the entries now so that we get the correct size for
2281 the .dynamic section. The DT_DEBUG entry is filled in by the
2282 dynamic linker and used by the debugger. */
2283 #define add_dynamic_entry(TAG, VAL) \
2284 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2286 if (info
->executable
)
2288 if (! add_dynamic_entry (DT_DEBUG
, 0))
2292 if (htab
->splt
->size
!= 0)
2294 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2295 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2296 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2297 || ! add_dynamic_entry (DT_JMPREL
, 0))
2303 if (! add_dynamic_entry (DT_RELA
, 0)
2304 || ! add_dynamic_entry (DT_RELASZ
, 0)
2305 || ! add_dynamic_entry (DT_RELAENT
,
2306 sizeof (Elf32_External_Rela
)))
2309 /* If any dynamic relocs apply to a read-only section,
2310 then we need a DT_TEXTREL entry. */
2311 if ((info
->flags
& DF_TEXTREL
) == 0)
2312 elf_link_hash_traverse (&htab
->root
, readonly_dynrelocs
,
2315 if ((info
->flags
& DF_TEXTREL
) != 0)
2317 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2322 #undef add_dynamic_entry
2324 /* Allocate .rofixup section. */
2325 if (IS_FDPIC (output_bfd
))
2327 struct weak_symbol_list
*list_start
= NULL
, *list_end
= NULL
;
2328 int rgot_weak_count
= 0;
2331 /* Look for deleted sections. */
2332 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2334 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2338 /* Count relocs that need .rofixup entires. */
2339 Elf_Internal_Rela
*internal_relocs
, *end
;
2340 internal_relocs
= elf_section_data (s
)->relocs
;
2341 if (internal_relocs
== NULL
)
2342 internal_relocs
= (_bfd_elf_link_read_relocs (ibfd
, s
, NULL
, NULL
, FALSE
));
2343 if (internal_relocs
!= NULL
)
2345 end
= internal_relocs
+ s
->reloc_count
;
2346 while (internal_relocs
< end
)
2348 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2349 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
2350 unsigned long r_symndx
;
2351 struct elf_link_hash_entry
*h
;
2353 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2354 sym_hashes
= elf_sym_hashes (ibfd
);
2355 r_symndx
= ELF32_R_SYM (internal_relocs
->r_info
);
2357 if (r_symndx
< symtab_hdr
->sh_info
)
2362 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2363 while (h
->root
.type
== bfd_link_hash_indirect
2364 || h
->root
.type
== bfd_link_hash_warning
)
2365 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2368 /* Don't generate entries for weak symbols. */
2369 if (!h
|| (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
2371 if (!discarded_section (s
) && !((bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
) == 0))
2373 switch (ELF32_R_TYPE (internal_relocs
->r_info
))
2386 struct weak_symbol_list
*current
, *new_entry
;
2387 /* Is this symbol already in the list? */
2388 for (current
= list_start
; current
; current
= current
->next
)
2390 if (!strcmp (current
->name
, h
->root
.root
.string
))
2393 if (!current
&& !discarded_section (s
) && (bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
))
2395 /* Will this have an entry in the GOT. */
2396 if (ELF32_R_TYPE (internal_relocs
->r_info
) == R_LM32_16_GOT
)
2398 /* Create a new entry. */
2399 new_entry
= malloc (sizeof (struct weak_symbol_list
));
2402 new_entry
->name
= h
->root
.root
.string
;
2403 new_entry
->next
= NULL
;
2405 if (list_start
== NULL
)
2407 list_start
= new_entry
;
2408 list_end
= new_entry
;
2412 list_end
->next
= new_entry
;
2413 list_end
= new_entry
;
2415 /* Increase count of undefined weak symbols in the got. */
2431 list_end
= list_start
->next
;
2433 list_start
= list_end
;
2436 /* Size sections. */
2437 lm32fdpic_fixup32_section (info
)->size
= (r32_count
+ (htab
->sgot
->size
/ 4) - rgot_weak_count
+ 1) * 4;
2438 if (lm32fdpic_fixup32_section (info
)->size
== 0)
2439 lm32fdpic_fixup32_section (info
)->flags
|= SEC_EXCLUDE
;
2442 lm32fdpic_fixup32_section (info
)->contents
=
2443 bfd_zalloc (dynobj
, lm32fdpic_fixup32_section (info
)->size
);
2444 if (lm32fdpic_fixup32_section (info
)->contents
== NULL
)
2452 /* Create dynamic sections when linking against a dynamic object. */
2455 lm32_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2457 struct elf_lm32_link_hash_table
*htab
;
2458 flagword flags
, pltflags
;
2460 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2461 int ptralign
= 2; /* 32bit */
2463 htab
= lm32_elf_hash_table (info
);
2467 /* Make sure we have a GOT - For the case where we have a dynamic object
2468 but none of the relocs in check_relocs */
2469 if (! create_got_section (abfd
, info
))
2471 if (IS_FDPIC (abfd
) && (htab
->sfixup32
== NULL
))
2473 if (! create_rofixup_section (abfd
, info
))
2477 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2478 .rel[a].bss sections. */
2479 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2480 | SEC_LINKER_CREATED
);
2483 pltflags
|= SEC_CODE
;
2484 if (bed
->plt_not_loaded
)
2485 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
2486 if (bed
->plt_readonly
)
2487 pltflags
|= SEC_READONLY
;
2489 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
2492 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
2495 if (bed
->want_plt_sym
)
2497 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2499 struct bfd_link_hash_entry
*bh
= NULL
;
2500 struct elf_link_hash_entry
*h
;
2502 if (! (_bfd_generic_link_add_one_symbol
2503 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
2504 (bfd_vma
) 0, NULL
, FALSE
,
2505 get_elf_backend_data (abfd
)->collect
, &bh
)))
2507 h
= (struct elf_link_hash_entry
*) bh
;
2509 h
->type
= STT_OBJECT
;
2510 htab
->root
.hplt
= h
;
2513 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
2517 s
= bfd_make_section_anyway_with_flags (abfd
,
2518 bed
->default_use_rela_p
2519 ? ".rela.plt" : ".rel.plt",
2520 flags
| SEC_READONLY
);
2523 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2526 if (htab
->sgot
== NULL
2527 && ! create_got_section (abfd
, info
))
2530 if (bed
->want_dynbss
)
2532 /* The .dynbss section is a place to put symbols which are defined
2533 by dynamic objects, are referenced by regular objects, and are
2534 not functions. We must allocate space for them in the process
2535 image and use a R_*_COPY reloc to tell the dynamic linker to
2536 initialize them at run time. The linker script puts the .dynbss
2537 section into the .bss section of the final image. */
2538 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
2539 SEC_ALLOC
| SEC_LINKER_CREATED
);
2543 /* The .rel[a].bss section holds copy relocs. This section is not
2544 normally needed. We need to create it here, though, so that the
2545 linker will map it to an output section. We can't just create it
2546 only if we need it, because we will not know whether we need it
2547 until we have seen all the input files, and the first time the
2548 main linker code calls BFD after examining all the input files
2549 (size_dynamic_sections) the input sections have already been
2550 mapped to the output sections. If the section turns out not to
2551 be needed, we can discard it later. We will never need this
2552 section when generating a shared object, since they do not use
2556 s
= bfd_make_section_anyway_with_flags (abfd
,
2557 (bed
->default_use_rela_p
2558 ? ".rela.bss" : ".rel.bss"),
2559 flags
| SEC_READONLY
);
2562 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2570 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2573 lm32_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2574 struct elf_link_hash_entry
*dir
,
2575 struct elf_link_hash_entry
*ind
)
2577 struct elf_lm32_link_hash_entry
* edir
;
2578 struct elf_lm32_link_hash_entry
* eind
;
2580 edir
= (struct elf_lm32_link_hash_entry
*) dir
;
2581 eind
= (struct elf_lm32_link_hash_entry
*) ind
;
2583 if (eind
->dyn_relocs
!= NULL
)
2585 if (edir
->dyn_relocs
!= NULL
)
2587 struct elf_lm32_dyn_relocs
**pp
;
2588 struct elf_lm32_dyn_relocs
*p
;
2590 /* Add reloc counts against the indirect sym to the direct sym
2591 list. Merge any entries against the same section. */
2592 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2594 struct elf_lm32_dyn_relocs
*q
;
2596 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2597 if (q
->sec
== p
->sec
)
2599 q
->pc_count
+= p
->pc_count
;
2600 q
->count
+= p
->count
;
2607 *pp
= edir
->dyn_relocs
;
2610 edir
->dyn_relocs
= eind
->dyn_relocs
;
2611 eind
->dyn_relocs
= NULL
;
2614 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2618 lm32_elf_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
2620 if (!info
->relocatable
)
2622 if (!bfd_elf_stack_segment_size (output_bfd
, info
,
2623 "__stacksize", DEFAULT_STACK_SIZE
))
2626 asection
*sec
= bfd_get_section_by_name (output_bfd
, ".stack");
2628 sec
->size
= info
->stacksize
>= 0 ? info
->stacksize
: 0;
2635 lm32_elf_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2637 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2638 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2641 BFD_ASSERT (!elf_flags_init (obfd
)
2642 || elf_elfheader (obfd
)->e_flags
== elf_elfheader (ibfd
)->e_flags
);
2644 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
2645 elf_flags_init (obfd
) = TRUE
;
2647 /* Copy object attributes. */
2648 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
2655 lm32_elf_fdpic_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2659 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2660 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2663 if (! lm32_elf_copy_private_bfd_data (ibfd
, obfd
))
2666 if (! elf_tdata (ibfd
) || ! elf_tdata (ibfd
)->phdr
2667 || ! elf_tdata (obfd
) || ! elf_tdata (obfd
)->phdr
)
2670 /* Copy the stack size. */
2671 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
2672 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2674 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
2676 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
2677 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2679 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
2681 /* Rewrite the phdrs, since we're only called after they were first written. */
2682 if (bfd_seek (obfd
, (bfd_signed_vma
) get_elf_backend_data (obfd
)
2683 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
2684 || get_elf_backend_data (obfd
)->s
->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
2685 elf_elfheader (obfd
)->e_phnum
) != 0)
2697 #define ELF_ARCH bfd_arch_lm32
2698 #define ELF_TARGET_ID LM32_ELF_DATA
2699 #define ELF_MACHINE_CODE EM_LATTICEMICO32
2700 #define ELF_MAXPAGESIZE 0x1000
2702 #define TARGET_BIG_SYM bfd_elf32_lm32_vec
2703 #define TARGET_BIG_NAME "elf32-lm32"
2705 #define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
2706 #define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
2707 #define elf_info_to_howto lm32_info_to_howto_rela
2708 #define elf_info_to_howto_rel 0
2709 #define elf_backend_rela_normal 1
2710 #define elf_backend_object_p lm32_elf_object_p
2711 #define elf_backend_final_write_processing lm32_elf_final_write_processing
2712 #define elf_backend_stack_align 8
2713 #define elf_backend_can_gc_sections 1
2714 #define elf_backend_can_refcount 1
2715 #define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
2716 #define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
2717 #define elf_backend_plt_readonly 1
2718 #define elf_backend_want_got_plt 1
2719 #define elf_backend_want_plt_sym 0
2720 #define elf_backend_got_header_size 12
2721 #define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
2722 #define elf_backend_check_relocs lm32_elf_check_relocs
2723 #define elf_backend_reloc_type_class lm32_elf_reloc_type_class
2724 #define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
2725 #define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
2726 #define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2727 #define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
2728 #define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
2729 #define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
2730 #define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
2731 #define elf_backend_relocate_section lm32_elf_relocate_section
2733 #include "elf32-target.h"
2735 #undef ELF_MAXPAGESIZE
2736 #define ELF_MAXPAGESIZE 0x4000
2739 #undef TARGET_BIG_SYM
2740 #define TARGET_BIG_SYM bfd_elf32_lm32fdpic_vec
2741 #undef TARGET_BIG_NAME
2742 #define TARGET_BIG_NAME "elf32-lm32fdpic"
2744 #define elf32_bed elf32_lm32fdpic_bed
2746 #undef elf_backend_always_size_sections
2747 #define elf_backend_always_size_sections lm32_elf_always_size_sections
2748 #undef bfd_elf32_bfd_copy_private_bfd_data
2749 #define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
2751 #include "elf32-target.h"