1 /* Lattice Mico32-specific support for 32-bit ELF
2 Copyright 2008, 2009, 2010 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_section_by_name (dynobj
, ".got");
221 if (s
!= NULL
&& (s
->flags
& SEC_LINKER_CREATED
) != 0)
224 htab
= lm32_elf_hash_table (info
);
228 if (! _bfd_elf_create_got_section (dynobj
, info
))
231 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
232 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
233 htab
->srelgot
= bfd_get_section_by_name (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
) = bfd_make_section_with_flags (dynobj
,
261 if (lm32fdpic_fixup32_section (info
) == NULL
262 || ! bfd_set_section_alignment (dynobj
, lm32fdpic_fixup32_section (info
), 2))
268 static reloc_howto_type lm32_elf_howto_table
[] =
270 /* This reloc does nothing. */
271 HOWTO (R_LM32_NONE
, /* type */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE
, /* pc_relative */
277 complain_overflow_bitfield
,/* complain_on_overflow */
278 bfd_elf_generic_reloc
, /* special_function */
279 "R_LM32_NONE", /* name */
280 FALSE
, /* partial_inplace */
283 FALSE
), /* pcrel_offset */
285 /* An 8 bit absolute relocation. */
286 HOWTO (R_LM32_8
, /* type */
288 0, /* size (0 = byte, 1 = short, 2 = long) */
290 FALSE
, /* pc_relative */
292 complain_overflow_bitfield
,/* complain_on_overflow */
293 bfd_elf_generic_reloc
, /* special_function */
294 "R_LM32_8", /* name */
295 FALSE
, /* partial_inplace */
298 FALSE
), /* pcrel_offset */
300 /* A 16 bit absolute relocation. */
301 HOWTO (R_LM32_16
, /* type */
303 1, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE
, /* pc_relative */
307 complain_overflow_bitfield
,/* complain_on_overflow */
308 bfd_elf_generic_reloc
, /* special_function */
309 "R_LM32_16", /* name */
310 FALSE
, /* partial_inplace */
312 0xffff, /* dst_mask */
313 FALSE
), /* pcrel_offset */
315 /* A 32 bit absolute relocation. */
316 HOWTO (R_LM32_32
, /* type */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE
, /* pc_relative */
322 complain_overflow_bitfield
,/* complain_on_overflow */
323 bfd_elf_generic_reloc
, /* special_function */
324 "R_LM32_32", /* name */
325 FALSE
, /* partial_inplace */
327 0xffffffff, /* dst_mask */
328 FALSE
), /* pcrel_offset */
330 HOWTO (R_LM32_HI16
, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE
, /* pc_relative */
336 complain_overflow_bitfield
,/* complain_on_overflow */
337 bfd_elf_generic_reloc
, /* special_function */
338 "R_LM32_HI16", /* name */
339 FALSE
, /* partial_inplace */
341 0xffff, /* dst_mask */
342 FALSE
), /* pcrel_offset */
344 HOWTO (R_LM32_LO16
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE
, /* pc_relative */
350 complain_overflow_dont
, /* complain_on_overflow */
351 bfd_elf_generic_reloc
, /* special_function */
352 "R_LM32_LO16", /* name */
353 FALSE
, /* partial_inplace */
355 0xffff, /* dst_mask */
356 FALSE
), /* pcrel_offset */
358 HOWTO (R_LM32_GPREL16
, /* type */
360 2, /* size (0 = byte, 1 = short, 2 = long) */
362 FALSE
, /* pc_relative */
364 complain_overflow_dont
, /* complain_on_overflow */
365 lm32_elf_gprel_reloc
, /* special_function */
366 "R_LM32_GPREL16", /* name */
367 FALSE
, /* partial_inplace */
369 0xffff, /* dst_mask */
370 FALSE
), /* pcrel_offset */
372 HOWTO (R_LM32_CALL
, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 TRUE
, /* pc_relative */
378 complain_overflow_signed
, /* complain_on_overflow */
379 bfd_elf_generic_reloc
, /* special_function */
380 "R_LM32_CALL", /* name */
381 FALSE
, /* partial_inplace */
383 0x3ffffff, /* dst_mask */
384 TRUE
), /* pcrel_offset */
386 HOWTO (R_LM32_BRANCH
, /* type */
388 2, /* size (0 = byte, 1 = short, 2 = long) */
390 TRUE
, /* pc_relative */
392 complain_overflow_signed
, /* complain_on_overflow */
393 bfd_elf_generic_reloc
, /* special_function */
394 "R_LM32_BRANCH", /* name */
395 FALSE
, /* partial_inplace */
397 0xffff, /* dst_mask */
398 TRUE
), /* pcrel_offset */
400 /* GNU extension to record C++ vtable hierarchy. */
401 HOWTO (R_LM32_GNU_VTINHERIT
, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE
, /* pc_relative */
407 complain_overflow_dont
, /* complain_on_overflow */
408 NULL
, /* special_function */
409 "R_LM32_GNU_VTINHERIT", /* name */
410 FALSE
, /* partial_inplace */
413 FALSE
), /* pcrel_offset */
415 /* GNU extension to record C++ vtable member usage. */
416 HOWTO (R_LM32_GNU_VTENTRY
, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 FALSE
, /* pc_relative */
422 complain_overflow_dont
, /* complain_on_overflow */
423 _bfd_elf_rel_vtable_reloc_fn
,/* special_function */
424 "R_LM32_GNU_VTENTRY", /* name */
425 FALSE
, /* partial_inplace */
428 FALSE
), /* pcrel_offset */
430 HOWTO (R_LM32_16_GOT
, /* type */
432 2, /* size (0 = byte, 1 = short, 2 = long) */
434 FALSE
, /* pc_relative */
436 complain_overflow_signed
, /* complain_on_overflow */
437 bfd_elf_generic_reloc
, /* special_function */
438 "R_LM32_16_GOT", /* name */
439 FALSE
, /* partial_inplace */
441 0xffff, /* dst_mask */
442 FALSE
), /* pcrel_offset */
444 HOWTO (R_LM32_GOTOFF_HI16
, /* type */
446 2, /* size (0 = byte, 1 = short, 2 = long) */
448 FALSE
, /* pc_relative */
450 complain_overflow_dont
, /* complain_on_overflow */
451 bfd_elf_generic_reloc
, /* special_function */
452 "R_LM32_GOTOFF_HI16", /* name */
453 FALSE
, /* partial_inplace */
454 0xffff, /* src_mask */
455 0xffff, /* dst_mask */
456 FALSE
), /* pcrel_offset */
458 HOWTO (R_LM32_GOTOFF_LO16
, /* type */
460 2, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE
, /* pc_relative */
464 complain_overflow_dont
, /* complain_on_overflow */
465 bfd_elf_generic_reloc
, /* special_function */
466 "R_LM32_GOTOFF_LO16", /* name */
467 FALSE
, /* partial_inplace */
468 0xffff, /* src_mask */
469 0xffff, /* dst_mask */
470 FALSE
), /* pcrel_offset */
472 HOWTO (R_LM32_COPY
, /* type */
474 2, /* size (0 = byte, 1 = short, 2 = long) */
476 FALSE
, /* pc_relative */
478 complain_overflow_bitfield
, /* complain_on_overflow */
479 bfd_elf_generic_reloc
, /* special_function */
480 "R_LM32_COPY", /* name */
481 FALSE
, /* partial_inplace */
482 0xffffffff, /* src_mask */
483 0xffffffff, /* dst_mask */
484 FALSE
), /* pcrel_offset */
486 HOWTO (R_LM32_GLOB_DAT
, /* type */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
490 FALSE
, /* pc_relative */
492 complain_overflow_bitfield
, /* complain_on_overflow */
493 bfd_elf_generic_reloc
, /* special_function */
494 "R_LM32_GLOB_DAT", /* name */
495 FALSE
, /* partial_inplace */
496 0xffffffff, /* src_mask */
497 0xffffffff, /* dst_mask */
498 FALSE
), /* pcrel_offset */
500 HOWTO (R_LM32_JMP_SLOT
, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE
, /* pc_relative */
506 complain_overflow_bitfield
, /* complain_on_overflow */
507 bfd_elf_generic_reloc
, /* special_function */
508 "R_LM32_JMP_SLOT", /* name */
509 FALSE
, /* partial_inplace */
510 0xffffffff, /* src_mask */
511 0xffffffff, /* dst_mask */
512 FALSE
), /* pcrel_offset */
514 HOWTO (R_LM32_RELATIVE
, /* type */
516 2, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE
, /* pc_relative */
520 complain_overflow_bitfield
, /* complain_on_overflow */
521 bfd_elf_generic_reloc
, /* special_function */
522 "R_LM32_RELATIVE", /* name */
523 FALSE
, /* partial_inplace */
524 0xffffffff, /* src_mask */
525 0xffffffff, /* dst_mask */
526 FALSE
), /* pcrel_offset */
530 /* Map BFD reloc types to lm32 ELF reloc types. */
532 struct lm32_reloc_map
534 bfd_reloc_code_real_type bfd_reloc_val
;
535 unsigned char elf_reloc_val
;
538 static const struct lm32_reloc_map lm32_reloc_map
[] =
540 { BFD_RELOC_NONE
, R_LM32_NONE
},
541 { BFD_RELOC_8
, R_LM32_8
},
542 { BFD_RELOC_16
, R_LM32_16
},
543 { BFD_RELOC_32
, R_LM32_32
},
544 { BFD_RELOC_HI16
, R_LM32_HI16
},
545 { BFD_RELOC_LO16
, R_LM32_LO16
},
546 { BFD_RELOC_GPREL16
, R_LM32_GPREL16
},
547 { BFD_RELOC_LM32_CALL
, R_LM32_CALL
},
548 { BFD_RELOC_LM32_BRANCH
, R_LM32_BRANCH
},
549 { BFD_RELOC_VTABLE_INHERIT
, R_LM32_GNU_VTINHERIT
},
550 { BFD_RELOC_VTABLE_ENTRY
, R_LM32_GNU_VTENTRY
},
551 { BFD_RELOC_LM32_16_GOT
, R_LM32_16_GOT
},
552 { BFD_RELOC_LM32_GOTOFF_HI16
, R_LM32_GOTOFF_HI16
},
553 { BFD_RELOC_LM32_GOTOFF_LO16
, R_LM32_GOTOFF_LO16
},
554 { BFD_RELOC_LM32_COPY
, R_LM32_COPY
},
555 { BFD_RELOC_LM32_GLOB_DAT
, R_LM32_GLOB_DAT
},
556 { BFD_RELOC_LM32_JMP_SLOT
, R_LM32_JMP_SLOT
},
557 { BFD_RELOC_LM32_RELATIVE
, R_LM32_RELATIVE
},
560 static reloc_howto_type
*
561 lm32_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
562 bfd_reloc_code_real_type code
)
566 for (i
= 0; i
< sizeof (lm32_reloc_map
) / sizeof (lm32_reloc_map
[0]); i
++)
567 if (lm32_reloc_map
[i
].bfd_reloc_val
== code
)
568 return &lm32_elf_howto_table
[lm32_reloc_map
[i
].elf_reloc_val
];
572 static reloc_howto_type
*
573 lm32_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
579 i
< sizeof (lm32_elf_howto_table
) / sizeof (lm32_elf_howto_table
[0]);
581 if (lm32_elf_howto_table
[i
].name
!= NULL
582 && strcasecmp (lm32_elf_howto_table
[i
].name
, r_name
) == 0)
583 return &lm32_elf_howto_table
[i
];
589 /* Set the howto pointer for an Lattice Mico32 ELF reloc. */
592 lm32_info_to_howto_rela (bfd
*abfd ATTRIBUTE_UNUSED
,
594 Elf_Internal_Rela
*dst
)
598 r_type
= ELF32_R_TYPE (dst
->r_info
);
599 BFD_ASSERT (r_type
< (unsigned int) R_LM32_max
);
600 cache_ptr
->howto
= &lm32_elf_howto_table
[r_type
];
603 /* Set the right machine number for an Lattice Mico32 ELF file. */
606 lm32_elf_object_p (bfd
*abfd
)
608 return bfd_default_set_arch_mach (abfd
, bfd_arch_lm32
, bfd_mach_lm32
);
611 /* Set machine type flags just before file is written out. */
614 lm32_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
616 elf_elfheader (abfd
)->e_machine
= EM_LATTICEMICO32
;
617 elf_elfheader (abfd
)->e_flags
&=~ EF_LM32_MACH
;
618 switch (bfd_get_mach (abfd
))
621 elf_elfheader (abfd
)->e_flags
|= E_LM32_MACH
;
628 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
629 dangerous relocation. */
632 lm32_elf_assign_gp (bfd
*output_bfd
, bfd_vma
*pgp
)
638 /* If we've already figured out what GP will be, just return it. */
639 *pgp
= _bfd_get_gp_value (output_bfd
);
643 count
= bfd_get_symcount (output_bfd
);
644 sym
= bfd_get_outsymbols (output_bfd
);
646 /* The linker script will have created a symbol named `_gp' with the
647 appropriate value. */
652 for (i
= 0; i
< count
; i
++, sym
++)
656 name
= bfd_asymbol_name (*sym
);
657 if (*name
== '_' && strcmp (name
, "_gp") == 0)
659 *pgp
= bfd_asymbol_value (*sym
);
660 _bfd_set_gp_value (output_bfd
, *pgp
);
668 /* Only get the error once. */
670 _bfd_set_gp_value (output_bfd
, *pgp
);
677 /* We have to figure out the gp value, so that we can adjust the
678 symbol value correctly. We look up the symbol _gp in the output
679 BFD. If we can't find it, we're stuck. We cache it in the ELF
680 target data. We don't need to adjust the symbol value for an
681 external symbol if we are producing relocatable output. */
683 static bfd_reloc_status_type
684 lm32_elf_final_gp (bfd
*output_bfd
, asymbol
*symbol
, bfd_boolean relocatable
,
685 char **error_message
, bfd_vma
*pgp
)
687 if (bfd_is_und_section (symbol
->section
) && !relocatable
)
690 return bfd_reloc_undefined
;
693 *pgp
= _bfd_get_gp_value (output_bfd
);
694 if (*pgp
== 0 && (!relocatable
|| (symbol
->flags
& BSF_SECTION_SYM
) != 0))
698 /* Make up a value. */
699 *pgp
= symbol
->section
->output_section
->vma
+ 0x4000;
700 _bfd_set_gp_value (output_bfd
, *pgp
);
702 else if (!lm32_elf_assign_gp (output_bfd
, pgp
))
706 _("global pointer relative relocation when _gp not defined");
707 return bfd_reloc_dangerous
;
714 static bfd_reloc_status_type
715 lm32_elf_do_gprel_relocate (bfd
*abfd
,
716 reloc_howto_type
*howto
,
717 asection
*input_section ATTRIBUTE_UNUSED
,
720 bfd_vma symbol_value
,
723 return _bfd_final_link_relocate (howto
, abfd
, input_section
,
724 data
, offset
, symbol_value
, addend
);
727 static bfd_reloc_status_type
728 lm32_elf_gprel_reloc (bfd
*abfd
,
729 arelent
*reloc_entry
,
732 asection
*input_section
,
738 bfd_reloc_status_type r
;
740 if (output_bfd
!= (bfd
*) NULL
741 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
742 && (!reloc_entry
->howto
->partial_inplace
|| reloc_entry
->addend
== 0))
744 reloc_entry
->address
+= input_section
->output_offset
;
748 if (output_bfd
!= NULL
)
751 relocation
= symbol
->value
752 + symbol
->section
->output_section
->vma
+ symbol
->section
->output_offset
;
755 lm32_elf_final_gp (abfd
, symbol
, FALSE
, msg
, &gp
)) == bfd_reloc_ok
)
757 relocation
= relocation
+ reloc_entry
->addend
- gp
;
758 reloc_entry
->addend
= 0;
759 if ((signed) relocation
< -32768 || (signed) relocation
> 32767)
761 *msg
= _("global pointer relative address out of range");
762 r
= bfd_reloc_outofrange
;
766 r
= lm32_elf_do_gprel_relocate (abfd
, reloc_entry
->howto
,
768 data
, reloc_entry
->address
,
769 relocation
, reloc_entry
->addend
);
776 /* Find the segment number in which OSEC, and output section, is
780 _lm32fdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
782 struct elf_segment_map
*m
;
783 Elf_Internal_Phdr
*p
;
785 /* Find the segment that contains the output_section. */
786 for (m
= elf_tdata (output_bfd
)->segment_map
,
787 p
= elf_tdata (output_bfd
)->phdr
;
793 for (i
= m
->count
- 1; i
>= 0; i
--)
794 if (m
->sections
[i
] == osec
)
801 return p
- elf_tdata (output_bfd
)->phdr
;
804 /* Determine if an output section is read-only. */
806 inline static bfd_boolean
807 _lm32fdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
809 unsigned seg
= _lm32fdpic_osec_to_segment (output_bfd
, osec
);
811 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
814 /* Relocate a section */
817 lm32_elf_relocate_section (bfd
*output_bfd
,
818 struct bfd_link_info
*info
,
820 asection
*input_section
,
822 Elf_Internal_Rela
*relocs
,
823 Elf_Internal_Sym
*local_syms
,
824 asection
**local_sections
)
826 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
827 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
828 Elf_Internal_Rela
*rel
, *relend
;
829 struct elf_lm32_link_hash_table
*htab
= lm32_elf_hash_table (info
);
831 bfd_vma
*local_got_offsets
;
837 dynobj
= htab
->root
.dynobj
;
838 local_got_offsets
= elf_local_got_offsets (input_bfd
);
842 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
843 sym_hashes
= elf_sym_hashes (input_bfd
);
846 relend
= relocs
+ input_section
->reloc_count
;
847 for (; rel
< relend
; rel
++)
849 reloc_howto_type
*howto
;
851 unsigned long r_symndx
;
852 Elf_Internal_Sym
*sym
;
854 struct elf_link_hash_entry
*h
;
857 bfd_reloc_status_type r
;
858 const char *name
= NULL
;
860 r_symndx
= ELF32_R_SYM (rel
->r_info
);
861 r_type
= ELF32_R_TYPE (rel
->r_info
);
863 if (r_type
== R_LM32_GNU_VTENTRY
864 || r_type
== R_LM32_GNU_VTINHERIT
)
871 howto
= lm32_elf_howto_table
+ r_type
;
873 if (r_symndx
< symtab_hdr
->sh_info
)
875 /* It's a local symbol. */
876 sym
= local_syms
+ r_symndx
;
877 sec
= local_sections
[r_symndx
];
878 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
879 name
= bfd_elf_string_from_elf_section
880 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
881 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
885 /* It's a global symbol. */
886 bfd_boolean unresolved_reloc
;
889 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
890 r_symndx
, symtab_hdr
, sym_hashes
,
892 unresolved_reloc
, warned
);
893 name
= h
->root
.root
.string
;
896 if (sec
!= NULL
&& elf_discarded_section (sec
))
898 /* For relocs against symbols from removed linkonce sections,
899 or sections discarded by a linker script, we just want the
900 section contents zeroed. Avoid any special processing. */
901 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
907 if (info
->relocatable
)
909 /* This is a relocatable link. We don't have to change
910 anything, unless the reloc is against a section symbol,
911 in which case we have to adjust according to where the
912 section symbol winds up in the output section. */
913 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
916 /* If partial_inplace, we need to store any additional addend
917 back in the section. */
918 if (! howto
->partial_inplace
)
921 /* Shouldn't reach here. */
930 if (!lm32_elf_assign_gp (output_bfd
, &gp
))
931 r
= bfd_reloc_dangerous
;
934 relocation
= relocation
+ rel
->r_addend
- gp
;
936 if ((signed)relocation
< -32768 || (signed)relocation
> 32767)
937 r
= bfd_reloc_outofrange
;
940 r
= _bfd_final_link_relocate (howto
, input_bfd
,
941 input_section
, contents
,
942 rel
->r_offset
, relocation
,
948 /* Relocation is to the entry for this symbol in the global
950 BFD_ASSERT (sgot
!= NULL
);
957 BFD_ASSERT (off
!= (bfd_vma
) -1);
959 dyn
= htab
->root
.dynamic_sections_created
;
960 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
967 /* This is actually a static link, or it is a
968 -Bsymbolic link and the symbol is defined
969 locally, or the symbol was forced to be local
970 because of a version file. We must initialize
971 this entry in the global offset table. Since the
972 offset must always be a multiple of 4, we use the
973 least significant bit to record whether we have
974 initialized it already.
976 When doing a dynamic link, we create a .rela.got
977 relocation entry to initialize the value. This
978 is done in the finish_dynamic_symbol routine. */
983 /* Write entry in GOT */
984 bfd_put_32 (output_bfd
, relocation
,
985 sgot
->contents
+ off
);
986 /* Create entry in .rofixup pointing to GOT entry. */
987 if (IS_FDPIC (output_bfd
) && h
->root
.type
!= bfd_link_hash_undefweak
)
989 _lm32fdpic_add_rofixup (output_bfd
,
990 lm32fdpic_fixup32_section
992 sgot
->output_section
->vma
993 + sgot
->output_offset
996 /* Mark GOT entry as having been written. */
1001 relocation
= sgot
->output_offset
+ off
;
1008 BFD_ASSERT (local_got_offsets
!= NULL
1009 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1011 /* Get offset into GOT table. */
1012 off
= local_got_offsets
[r_symndx
];
1014 /* The offset must always be a multiple of 4. We use
1015 the least significant bit to record whether we have
1016 already processed this entry. */
1021 /* Write entry in GOT. */
1022 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1023 /* Create entry in .rofixup pointing to GOT entry. */
1024 if (IS_FDPIC (output_bfd
))
1026 _lm32fdpic_add_rofixup (output_bfd
,
1027 lm32fdpic_fixup32_section
1029 sgot
->output_section
->vma
1030 + sgot
->output_offset
1037 Elf_Internal_Rela outrel
;
1039 /* We need to generate a R_LM32_RELATIVE reloc
1040 for the dynamic linker. */
1041 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1042 BFD_ASSERT (srelgot
!= NULL
);
1044 outrel
.r_offset
= (sgot
->output_section
->vma
1045 + sgot
->output_offset
1047 outrel
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
1048 outrel
.r_addend
= relocation
;
1049 loc
= srelgot
->contents
;
1050 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
1051 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
1052 ++srelgot
->reloc_count
;
1055 local_got_offsets
[r_symndx
] |= 1;
1059 relocation
= sgot
->output_offset
+ off
;
1062 /* Addend should be zero. */
1063 if (rel
->r_addend
!= 0)
1064 (*_bfd_error_handler
) (_("internal error: addend should be zero for R_LM32_16_GOT"));
1066 r
= _bfd_final_link_relocate (howto
,
1075 case R_LM32_GOTOFF_LO16
:
1076 case R_LM32_GOTOFF_HI16
:
1077 /* Relocation is offset from GOT. */
1078 BFD_ASSERT (sgot
!= NULL
);
1079 relocation
-= sgot
->output_section
->vma
;
1080 /* Account for sign-extension. */
1081 if ((r_type
== R_LM32_GOTOFF_HI16
)
1082 && ((relocation
+ rel
->r_addend
) & 0x8000))
1083 rel
->r_addend
+= 0x10000;
1084 r
= _bfd_final_link_relocate (howto
,
1094 if (IS_FDPIC (output_bfd
))
1096 if ((!h
) || (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
1098 /* Only create .rofixup entries for relocs in loadable sections. */
1099 if ((bfd_get_section_flags (output_bfd
, input_section
->output_section
)
1100 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
1103 /* Check address to be modified is writable. */
1104 if (_lm32fdpic_osec_readonly_p (output_bfd
,
1108 info
->callbacks
->warning
1110 _("cannot emit dynamic relocations in read-only section"),
1111 name
, input_bfd
, input_section
, rel
->r_offset
);
1114 /* Create entry in .rofixup section. */
1115 _lm32fdpic_add_rofixup (output_bfd
,
1116 lm32fdpic_fixup32_section (info
),
1117 input_section
->output_section
->vma
1118 + input_section
->output_offset
1126 r
= _bfd_final_link_relocate (howto
,
1137 if (r
!= bfd_reloc_ok
)
1139 const char *msg
= NULL
;
1142 lm32_info_to_howto_rela (input_bfd
, &bfd_reloc
, rel
);
1143 howto
= bfd_reloc
.howto
;
1146 name
= h
->root
.root
.string
;
1149 name
= (bfd_elf_string_from_elf_section
1150 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
1151 if (name
== NULL
|| *name
== '\0')
1152 name
= bfd_section_name (input_bfd
, sec
);
1157 case bfd_reloc_overflow
:
1159 && (h
->root
.type
== bfd_link_hash_undefweak
))
1161 if (! ((*info
->callbacks
->reloc_overflow
)
1162 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1163 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
)))
1167 case bfd_reloc_undefined
:
1168 if (! ((*info
->callbacks
->undefined_symbol
)
1169 (info
, name
, input_bfd
, input_section
,
1170 rel
->r_offset
, TRUE
)))
1174 case bfd_reloc_outofrange
:
1175 msg
= _("internal error: out of range error");
1178 case bfd_reloc_notsupported
:
1179 msg
= _("internal error: unsupported relocation error");
1182 case bfd_reloc_dangerous
:
1183 msg
= _("internal error: dangerous error");
1187 msg
= _("internal error: unknown error");
1191 if (!((*info
->callbacks
->warning
)
1192 (info
, msg
, name
, input_bfd
, input_section
,
1204 lm32_elf_gc_mark_hook (asection
*sec
,
1205 struct bfd_link_info
*info
,
1206 Elf_Internal_Rela
*rel
,
1207 struct elf_link_hash_entry
*h
,
1208 Elf_Internal_Sym
*sym
)
1211 switch (ELF32_R_TYPE (rel
->r_info
))
1213 case R_LM32_GNU_VTINHERIT
:
1214 case R_LM32_GNU_VTENTRY
:
1218 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1222 lm32_elf_gc_sweep_hook (bfd
*abfd
,
1223 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1225 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
)
1227 /* Update the got entry reference counts for the section being removed. */
1228 Elf_Internal_Shdr
*symtab_hdr
;
1229 struct elf_link_hash_entry
**sym_hashes
;
1230 bfd_signed_vma
*local_got_refcounts
;
1231 const Elf_Internal_Rela
*rel
, *relend
;
1233 elf_section_data (sec
)->local_dynrel
= NULL
;
1235 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1236 sym_hashes
= elf_sym_hashes (abfd
);
1237 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1239 relend
= relocs
+ sec
->reloc_count
;
1240 for (rel
= relocs
; rel
< relend
; rel
++)
1242 unsigned long r_symndx
;
1243 struct elf_link_hash_entry
*h
= NULL
;
1245 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1246 if (r_symndx
>= symtab_hdr
->sh_info
)
1248 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1249 while (h
->root
.type
== bfd_link_hash_indirect
1250 || h
->root
.type
== bfd_link_hash_warning
)
1251 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1254 switch (ELF32_R_TYPE (rel
->r_info
))
1259 if (h
->got
.refcount
> 0)
1264 if (local_got_refcounts
&& local_got_refcounts
[r_symndx
] > 0)
1265 local_got_refcounts
[r_symndx
]--;
1276 /* Look through the relocs for a section during the first phase. */
1279 lm32_elf_check_relocs (bfd
*abfd
,
1280 struct bfd_link_info
*info
,
1282 const Elf_Internal_Rela
*relocs
)
1284 Elf_Internal_Shdr
*symtab_hdr
;
1285 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
1286 const Elf_Internal_Rela
*rel
;
1287 const Elf_Internal_Rela
*rel_end
;
1288 struct elf_lm32_link_hash_table
*htab
;
1291 if (info
->relocatable
)
1294 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1295 sym_hashes
= elf_sym_hashes (abfd
);
1296 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof (Elf32_External_Sym
);
1297 if (!elf_bad_symtab (abfd
))
1298 sym_hashes_end
-= symtab_hdr
->sh_info
;
1300 htab
= lm32_elf_hash_table (info
);
1304 dynobj
= htab
->root
.dynobj
;
1306 rel_end
= relocs
+ sec
->reloc_count
;
1307 for (rel
= relocs
; rel
< rel_end
; rel
++)
1310 struct elf_link_hash_entry
*h
;
1311 unsigned long r_symndx
;
1313 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1314 r_type
= ELF32_R_TYPE (rel
->r_info
);
1315 if (r_symndx
< symtab_hdr
->sh_info
)
1319 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1320 while (h
->root
.type
== bfd_link_hash_indirect
1321 || h
->root
.type
== bfd_link_hash_warning
)
1322 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1325 /* Some relocs require a global offset table. */
1326 if (htab
->sgot
== NULL
)
1331 case R_LM32_GOTOFF_HI16
:
1332 case R_LM32_GOTOFF_LO16
:
1334 htab
->root
.dynobj
= dynobj
= abfd
;
1335 if (! create_got_section (dynobj
, info
))
1341 /* Some relocs require a rofixup table. */
1342 if (IS_FDPIC (abfd
))
1347 /* FDPIC requires a GOT if there is a .rofixup section
1348 (Normal ELF doesn't). */
1350 htab
->root
.dynobj
= dynobj
= abfd
;
1351 if (! create_got_section (dynobj
, info
))
1353 /* Create .rofixup section */
1354 if (htab
->sfixup32
== NULL
)
1356 if (! create_rofixup_section (abfd
, info
))
1361 case R_LM32_GOTOFF_HI16
:
1362 case R_LM32_GOTOFF_LO16
:
1363 /* Create .rofixup section. */
1364 if (htab
->sfixup32
== NULL
)
1366 if (! create_rofixup_section (abfd
, info
))
1377 h
->got
.refcount
+= 1;
1380 bfd_signed_vma
*local_got_refcounts
;
1382 /* This is a global offset table entry for a local symbol. */
1383 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1384 if (local_got_refcounts
== NULL
)
1388 size
= symtab_hdr
->sh_info
;
1389 size
*= sizeof (bfd_signed_vma
);
1390 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1391 if (local_got_refcounts
== NULL
)
1393 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1395 local_got_refcounts
[r_symndx
] += 1;
1399 /* This relocation describes the C++ object vtable hierarchy.
1400 Reconstruct it for later use during GC. */
1401 case R_LM32_GNU_VTINHERIT
:
1402 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1406 /* This relocation describes which C++ vtable entries are actually
1407 used. Record for later use during GC. */
1408 case R_LM32_GNU_VTENTRY
:
1409 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1419 /* Finish up the dynamic sections. */
1422 lm32_elf_finish_dynamic_sections (bfd
*output_bfd
,
1423 struct bfd_link_info
*info
)
1425 struct elf_lm32_link_hash_table
*htab
;
1430 htab
= lm32_elf_hash_table (info
);
1434 dynobj
= htab
->root
.dynobj
;
1436 sgot
= htab
->sgotplt
;
1437 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1439 if (htab
->root
.dynamic_sections_created
)
1442 Elf32_External_Dyn
*dyncon
, *dynconend
;
1444 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
1446 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1447 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
1449 for (; dyncon
< dynconend
; dyncon
++)
1451 Elf_Internal_Dyn dyn
;
1454 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1462 s
= htab
->sgot
->output_section
;
1465 s
= htab
->srelplt
->output_section
;
1467 BFD_ASSERT (s
!= NULL
);
1468 dyn
.d_un
.d_ptr
= s
->vma
;
1469 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1473 s
= htab
->srelplt
->output_section
;
1474 BFD_ASSERT (s
!= NULL
);
1475 dyn
.d_un
.d_val
= s
->size
;
1476 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1480 /* My reading of the SVR4 ABI indicates that the
1481 procedure linkage table relocs (DT_JMPREL) should be
1482 included in the overall relocs (DT_RELA). This is
1483 what Solaris does. However, UnixWare can not handle
1484 that case. Therefore, we override the DT_RELASZ entry
1485 here to make it not include the JMPREL relocs. Since
1486 the linker script arranges for .rela.plt to follow all
1487 other relocation sections, we don't have to worry
1488 about changing the DT_RELA entry. */
1489 if (htab
->srelplt
!= NULL
)
1491 s
= htab
->srelplt
->output_section
;
1492 dyn
.d_un
.d_val
-= s
->size
;
1494 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1499 /* Fill in the first entry in the procedure linkage table. */
1501 if (splt
&& splt
->size
> 0)
1505 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
1506 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
1507 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
1508 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
1509 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
1514 /* addr = .got + 4 */
1515 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
1516 bfd_put_32 (output_bfd
,
1517 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
1519 bfd_put_32 (output_bfd
,
1520 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
1521 splt
->contents
+ 4);
1522 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
1523 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
1524 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
1527 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1532 /* Fill in the first three entries in the global offset table. */
1533 if (sgot
&& sgot
->size
> 0)
1536 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1538 bfd_put_32 (output_bfd
,
1539 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1541 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
1542 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
1544 /* FIXME: This can be null if create_dynamic_sections wasn't called. */
1545 if (elf_section_data (sgot
->output_section
) != NULL
)
1546 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1549 if (lm32fdpic_fixup32_section (info
))
1551 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
1552 bfd_vma got_value
= hgot
->root
.u
.def
.value
1553 + hgot
->root
.u
.def
.section
->output_section
->vma
1554 + hgot
->root
.u
.def
.section
->output_offset
;
1555 struct bfd_link_hash_entry
*hend
;
1557 /* Last entry is pointer to GOT. */
1558 _lm32fdpic_add_rofixup (output_bfd
, lm32fdpic_fixup32_section (info
), got_value
);
1560 /* Check we wrote enough entries. */
1561 if (lm32fdpic_fixup32_section (info
)->size
1562 != (lm32fdpic_fixup32_section (info
)->reloc_count
* 4))
1564 (*_bfd_error_handler
)
1565 ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
1566 lm32fdpic_fixup32_section (info
)->size
/4,
1567 lm32fdpic_fixup32_section (info
)->reloc_count
);
1571 hend
= bfd_link_hash_lookup (info
->hash
, "__ROFIXUP_END__",
1572 FALSE
, FALSE
, TRUE
);
1574 && (hend
->type
== bfd_link_hash_defined
1575 || hend
->type
== bfd_link_hash_defweak
))
1578 lm32fdpic_fixup32_section (info
)->output_section
->vma
1579 + lm32fdpic_fixup32_section (info
)->output_offset
1580 + lm32fdpic_fixup32_section (info
)->size
1581 - hend
->u
.def
.section
->output_section
->vma
1582 - hend
->u
.def
.section
->output_offset
;
1583 BFD_ASSERT (hend
->u
.def
.value
== value
);
1584 if (hend
->u
.def
.value
!= value
)
1586 (*_bfd_error_handler
)
1587 ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend
->u
.def
.value
, value
);
1596 /* Finish up dynamic symbol handling. We set the contents of various
1597 dynamic sections here. */
1600 lm32_elf_finish_dynamic_symbol (bfd
*output_bfd
,
1601 struct bfd_link_info
*info
,
1602 struct elf_link_hash_entry
*h
,
1603 Elf_Internal_Sym
*sym
)
1605 struct elf_lm32_link_hash_table
*htab
;
1608 htab
= lm32_elf_hash_table (info
);
1612 if (h
->plt
.offset
!= (bfd_vma
) -1)
1620 Elf_Internal_Rela rela
;
1622 /* This symbol has an entry in the procedure linkage table. Set
1624 BFD_ASSERT (h
->dynindx
!= -1);
1627 sgot
= htab
->sgotplt
;
1628 srela
= htab
->srelplt
;
1629 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1631 /* Get the index in the procedure linkage table which
1632 corresponds to this symbol. This is the index of this symbol
1633 in all the symbols for which we are making plt entries. The
1634 first entry in the procedure linkage table is reserved. */
1635 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1637 /* Get the offset into the .got table of the entry that
1638 corresponds to this function. Each .got entry is 4 bytes.
1639 The first three are reserved. */
1640 got_offset
= (plt_index
+ 3) * 4;
1642 /* Fill in the entry in the procedure linkage table. */
1652 /* Fill in the entry in the global offset table. */
1653 bfd_put_32 (output_bfd
,
1654 (splt
->output_section
->vma
1655 + splt
->output_offset
1657 + 12), /* same offset */
1658 sgot
->contents
+ got_offset
);
1660 /* Fill in the entry in the .rela.plt section. */
1661 rela
.r_offset
= (sgot
->output_section
->vma
1662 + sgot
->output_offset
1664 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_JMP_SLOT
);
1666 loc
= srela
->contents
;
1667 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
1668 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1670 if (!h
->def_regular
)
1672 /* Mark the symbol as undefined, rather than as defined in
1673 the .plt section. Leave the value alone. */
1674 sym
->st_shndx
= SHN_UNDEF
;
1679 if (h
->got
.offset
!= (bfd_vma
) -1)
1683 Elf_Internal_Rela rela
;
1685 /* This symbol has an entry in the global offset table. Set it
1688 srela
= htab
->srelgot
;
1689 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1691 rela
.r_offset
= (sgot
->output_section
->vma
1692 + sgot
->output_offset
1693 + (h
->got
.offset
&~ 1));
1695 /* If this is a -Bsymbolic link, and the symbol is defined
1696 locally, we just want to emit a RELATIVE reloc. Likewise if
1697 the symbol was forced to be local because of a version file.
1698 The entry in the global offset table will already have been
1699 initialized in the relocate_section function. */
1706 rela
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
1707 rela
.r_addend
= (h
->root
.u
.def
.value
1708 + h
->root
.u
.def
.section
->output_section
->vma
1709 + h
->root
.u
.def
.section
->output_offset
);
1713 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
1714 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1715 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_GLOB_DAT
);
1719 loc
= srela
->contents
;
1720 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
1721 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1722 ++srela
->reloc_count
;
1728 Elf_Internal_Rela rela
;
1730 /* This symbols needs a copy reloc. Set it up. */
1731 BFD_ASSERT (h
->dynindx
!= -1
1732 && (h
->root
.type
== bfd_link_hash_defined
1733 || h
->root
.type
== bfd_link_hash_defweak
));
1735 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1737 BFD_ASSERT (s
!= NULL
);
1739 rela
.r_offset
= (h
->root
.u
.def
.value
1740 + h
->root
.u
.def
.section
->output_section
->vma
1741 + h
->root
.u
.def
.section
->output_offset
);
1742 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_COPY
);
1745 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
1746 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1750 /* Mark some specially defined symbols as absolute. */
1751 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1752 || h
== htab
->root
.hgot
)
1753 sym
->st_shndx
= SHN_ABS
;
1758 static enum elf_reloc_type_class
1759 lm32_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
1761 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1763 case R_LM32_RELATIVE
: return reloc_class_relative
;
1764 case R_LM32_JMP_SLOT
: return reloc_class_plt
;
1765 case R_LM32_COPY
: return reloc_class_copy
;
1766 default: return reloc_class_normal
;
1770 /* Adjust a symbol defined by a dynamic object and referenced by a
1771 regular object. The current definition is in some section of the
1772 dynamic object, but we're not including those sections. We have to
1773 change the definition to something the rest of the link can
1777 lm32_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1778 struct elf_link_hash_entry
*h
)
1780 struct elf_lm32_link_hash_table
*htab
;
1781 struct elf_lm32_link_hash_entry
*eh
;
1782 struct elf_lm32_dyn_relocs
*p
;
1786 dynobj
= elf_hash_table (info
)->dynobj
;
1788 /* Make sure we know what is going on here. */
1789 BFD_ASSERT (dynobj
!= NULL
1791 || h
->u
.weakdef
!= NULL
1794 && !h
->def_regular
)));
1796 /* If this is a function, put it in the procedure linkage table. We
1797 will fill in the contents of the procedure linkage table later,
1798 when we know the address of the .got section. */
1799 if (h
->type
== STT_FUNC
1805 && h
->root
.type
!= bfd_link_hash_undefweak
1806 && h
->root
.type
!= bfd_link_hash_undefined
)
1808 /* This case can occur if we saw a PLT reloc in an input
1809 file, but the symbol was never referred to by a dynamic
1810 object. In such a case, we don't actually need to build
1811 a procedure linkage table, and we can just do a PCREL
1813 h
->plt
.offset
= (bfd_vma
) -1;
1820 h
->plt
.offset
= (bfd_vma
) -1;
1822 /* If this is a weak symbol, and there is a real definition, the
1823 processor independent code will have arranged for us to see the
1824 real definition first, and we can just use the same value. */
1825 if (h
->u
.weakdef
!= NULL
)
1827 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1828 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1829 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1830 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1834 /* This is a reference to a symbol defined by a dynamic object which
1835 is not a function. */
1837 /* If we are creating a shared library, we must presume that the
1838 only references to the symbol are via the global offset table.
1839 For such cases we need not do anything here; the relocations will
1840 be handled correctly by relocate_section. */
1844 /* If there are no references to this symbol that do not use the
1845 GOT, we don't need to generate a copy reloc. */
1846 if (!h
->non_got_ref
)
1849 /* If -z nocopyreloc was given, we won't generate them either. */
1850 if (info
->nocopyreloc
)
1856 eh
= (struct elf_lm32_link_hash_entry
*) h
;
1857 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1859 s
= p
->sec
->output_section
;
1860 if (s
!= NULL
&& (s
->flags
& (SEC_READONLY
| SEC_HAS_CONTENTS
)) != 0)
1864 /* If we didn't find any dynamic relocs in sections which needs the
1865 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1875 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
1876 h
->root
.root
.string
);
1880 /* We must allocate the symbol in our .dynbss section, which will
1881 become part of the .bss section of the executable. There will be
1882 an entry for this symbol in the .dynsym section. The dynamic
1883 object will contain position independent code, so all references
1884 from the dynamic object to this symbol will go through the global
1885 offset table. The dynamic linker will use the .dynsym entry to
1886 determine the address it must put in the global offset table, so
1887 both the dynamic object and the regular object will refer to the
1888 same memory location for the variable. */
1890 htab
= lm32_elf_hash_table (info
);
1895 BFD_ASSERT (s
!= NULL
);
1897 /* We must generate a R_LM32_COPY reloc to tell the dynamic linker
1898 to copy the initial value out of the dynamic object and into the
1899 runtime process image. We need to remember the offset into the
1900 .rela.bss section we are going to use. */
1901 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
1905 srel
= htab
->srelbss
;
1906 BFD_ASSERT (srel
!= NULL
);
1907 srel
->size
+= sizeof (Elf32_External_Rela
);
1911 return _bfd_elf_adjust_dynamic_copy (h
, s
);
1914 /* Allocate space in .plt, .got and associated reloc sections for
1918 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1920 struct bfd_link_info
*info
;
1921 struct elf_lm32_link_hash_table
*htab
;
1922 struct elf_lm32_link_hash_entry
*eh
;
1923 struct elf_lm32_dyn_relocs
*p
;
1925 if (h
->root
.type
== bfd_link_hash_indirect
)
1928 if (h
->root
.type
== bfd_link_hash_warning
)
1929 /* When warning symbols are created, they **replace** the "real"
1930 entry in the hash table, thus we never get to see the real
1931 symbol in a hash traversal. So look at it now. */
1932 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1934 info
= (struct bfd_link_info
*) inf
;
1935 htab
= lm32_elf_hash_table (info
);
1939 eh
= (struct elf_lm32_link_hash_entry
*) h
;
1941 if (htab
->root
.dynamic_sections_created
1942 && h
->plt
.refcount
> 0)
1944 /* Make sure this symbol is output as a dynamic symbol.
1945 Undefined weak syms won't yet be marked as dynamic. */
1946 if (h
->dynindx
== -1
1947 && !h
->forced_local
)
1949 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1953 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
1955 asection
*s
= htab
->splt
;
1957 /* If this is the first .plt entry, make room for the special
1960 s
->size
+= PLT_ENTRY_SIZE
;
1962 h
->plt
.offset
= s
->size
;
1964 /* If this symbol is not defined in a regular file, and we are
1965 not generating a shared library, then set the symbol to this
1966 location in the .plt. This is required to make function
1967 pointers compare as equal between the normal executable and
1968 the shared library. */
1972 h
->root
.u
.def
.section
= s
;
1973 h
->root
.u
.def
.value
= h
->plt
.offset
;
1976 /* Make room for this entry. */
1977 s
->size
+= PLT_ENTRY_SIZE
;
1979 /* We also need to make an entry in the .got.plt section, which
1980 will be placed in the .got section by the linker script. */
1981 htab
->sgotplt
->size
+= 4;
1983 /* We also need to make an entry in the .rel.plt section. */
1984 htab
->srelplt
->size
+= sizeof (Elf32_External_Rela
);
1988 h
->plt
.offset
= (bfd_vma
) -1;
1994 h
->plt
.offset
= (bfd_vma
) -1;
1998 if (h
->got
.refcount
> 0)
2003 /* Make sure this symbol is output as a dynamic symbol.
2004 Undefined weak syms won't yet be marked as dynamic. */
2005 if (h
->dynindx
== -1
2006 && !h
->forced_local
)
2008 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2014 h
->got
.offset
= s
->size
;
2016 dyn
= htab
->root
.dynamic_sections_created
;
2017 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
))
2018 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
2021 h
->got
.offset
= (bfd_vma
) -1;
2023 if (eh
->dyn_relocs
== NULL
)
2026 /* In the shared -Bsymbolic case, discard space allocated for
2027 dynamic pc-relative relocs against symbols which turn out to be
2028 defined in regular objects. For the normal shared case, discard
2029 space for pc-relative relocs that have become local due to symbol
2030 visibility changes. */
2038 struct elf_lm32_dyn_relocs
**pp
;
2040 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2042 p
->count
-= p
->pc_count
;
2051 /* Also discard relocs on undefined weak syms with non-default
2053 if (eh
->dyn_relocs
!= NULL
2054 && h
->root
.type
== bfd_link_hash_undefweak
)
2056 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2057 eh
->dyn_relocs
= NULL
;
2059 /* Make sure undefined weak symbols are output as a dynamic
2061 else if (h
->dynindx
== -1
2062 && !h
->forced_local
)
2064 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2071 /* For the non-shared case, discard space for relocs against
2072 symbols which turn out to need copy relocs or are not
2078 || (htab
->root
.dynamic_sections_created
2079 && (h
->root
.type
== bfd_link_hash_undefweak
2080 || h
->root
.type
== bfd_link_hash_undefined
))))
2082 /* Make sure this symbol is output as a dynamic symbol.
2083 Undefined weak syms won't yet be marked as dynamic. */
2084 if (h
->dynindx
== -1
2085 && !h
->forced_local
)
2087 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2091 /* If that succeeded, we know we'll be keeping all the
2093 if (h
->dynindx
!= -1)
2097 eh
->dyn_relocs
= NULL
;
2102 /* Finally, allocate space. */
2103 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2105 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2106 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2112 /* Find any dynamic relocs that apply to read-only sections. */
2115 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2117 struct elf_lm32_link_hash_entry
*eh
;
2118 struct elf_lm32_dyn_relocs
*p
;
2120 if (h
->root
.type
== bfd_link_hash_warning
)
2121 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2123 eh
= (struct elf_lm32_link_hash_entry
*) h
;
2124 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2126 asection
*s
= p
->sec
->output_section
;
2128 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2130 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2132 info
->flags
|= DF_TEXTREL
;
2134 /* Not an error, just cut short the traversal. */
2141 /* Set the sizes of the dynamic sections. */
2144 lm32_elf_size_dynamic_sections (bfd
*output_bfd
,
2145 struct bfd_link_info
*info
)
2147 struct elf_lm32_link_hash_table
*htab
;
2153 htab
= lm32_elf_hash_table (info
);
2157 dynobj
= htab
->root
.dynobj
;
2158 BFD_ASSERT (dynobj
!= NULL
);
2160 if (htab
->root
.dynamic_sections_created
)
2162 /* Set the contents of the .interp section to the interpreter. */
2163 if (info
->executable
)
2165 s
= bfd_get_section_by_name (dynobj
, ".interp");
2166 BFD_ASSERT (s
!= NULL
);
2167 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2168 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2172 /* Set up .got offsets for local syms, and space for local dynamic
2174 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2176 bfd_signed_vma
*local_got
;
2177 bfd_signed_vma
*end_local_got
;
2178 bfd_size_type locsymcount
;
2179 Elf_Internal_Shdr
*symtab_hdr
;
2182 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2185 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2187 struct elf_lm32_dyn_relocs
*p
;
2189 for (p
= ((struct elf_lm32_dyn_relocs
*)
2190 elf_section_data (s
)->local_dynrel
);
2194 if (! bfd_is_abs_section (p
->sec
)
2195 && bfd_is_abs_section (p
->sec
->output_section
))
2197 /* Input section has been discarded, either because
2198 it is a copy of a linkonce section or due to
2199 linker script /DISCARD/, so we'll be discarding
2202 else if (p
->count
!= 0)
2204 srel
= elf_section_data (p
->sec
)->sreloc
;
2205 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2206 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2207 info
->flags
|= DF_TEXTREL
;
2212 local_got
= elf_local_got_refcounts (ibfd
);
2216 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2217 locsymcount
= symtab_hdr
->sh_info
;
2218 end_local_got
= local_got
+ locsymcount
;
2220 srel
= htab
->srelgot
;
2221 for (; local_got
< end_local_got
; ++local_got
)
2225 *local_got
= s
->size
;
2228 srel
->size
+= sizeof (Elf32_External_Rela
);
2231 *local_got
= (bfd_vma
) -1;
2235 /* Allocate global sym .plt and .got entries, and space for global
2236 sym dynamic relocs. */
2237 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2239 /* We now have determined the sizes of the various dynamic sections.
2240 Allocate memory for them. */
2242 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2244 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2249 || s
== htab
->sgotplt
2250 || s
== htab
->sdynbss
)
2252 /* Strip this section if we don't need it; see the
2255 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2257 if (s
->size
!= 0 && s
!= htab
->srelplt
)
2260 /* We use the reloc_count field as a counter if we need
2261 to copy relocs into the output file. */
2265 /* It's not one of our sections, so don't allocate space. */
2270 /* If we don't need this section, strip it from the
2271 output file. This is mostly to handle .rela.bss and
2272 .rela.plt. We must create both sections in
2273 create_dynamic_sections, because they must be created
2274 before the linker maps input sections to output
2275 sections. The linker does that before
2276 adjust_dynamic_symbol is called, and it is that
2277 function which decides whether anything needs to go
2278 into these sections. */
2279 s
->flags
|= SEC_EXCLUDE
;
2283 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2286 /* Allocate memory for the section contents. We use bfd_zalloc
2287 here in case unused entries are not reclaimed before the
2288 section's contents are written out. This should not happen,
2289 but this way if it does, we get a R_LM32_NONE reloc instead
2291 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2292 if (s
->contents
== NULL
)
2296 if (htab
->root
.dynamic_sections_created
)
2298 /* Add some entries to the .dynamic section. We fill in the
2299 values later, in lm32_elf_finish_dynamic_sections, but we
2300 must add the entries now so that we get the correct size for
2301 the .dynamic section. The DT_DEBUG entry is filled in by the
2302 dynamic linker and used by the debugger. */
2303 #define add_dynamic_entry(TAG, VAL) \
2304 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2306 if (info
->executable
)
2308 if (! add_dynamic_entry (DT_DEBUG
, 0))
2312 if (htab
->splt
->size
!= 0)
2314 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2315 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2316 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2317 || ! add_dynamic_entry (DT_JMPREL
, 0))
2323 if (! add_dynamic_entry (DT_RELA
, 0)
2324 || ! add_dynamic_entry (DT_RELASZ
, 0)
2325 || ! add_dynamic_entry (DT_RELAENT
,
2326 sizeof (Elf32_External_Rela
)))
2329 /* If any dynamic relocs apply to a read-only section,
2330 then we need a DT_TEXTREL entry. */
2331 if ((info
->flags
& DF_TEXTREL
) == 0)
2332 elf_link_hash_traverse (&htab
->root
, readonly_dynrelocs
,
2335 if ((info
->flags
& DF_TEXTREL
) != 0)
2337 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2342 #undef add_dynamic_entry
2344 /* Allocate .rofixup section. */
2345 if (IS_FDPIC (output_bfd
))
2347 struct weak_symbol_list
*list_start
= NULL
, *list_end
= NULL
;
2348 int rgot_weak_count
= 0;
2351 /* Look for deleted sections. */
2352 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2354 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2358 /* Count relocs that need .rofixup entires. */
2359 Elf_Internal_Rela
*internal_relocs
, *end
;
2360 internal_relocs
= elf_section_data (s
)->relocs
;
2361 if (internal_relocs
== NULL
)
2362 internal_relocs
= (_bfd_elf_link_read_relocs (ibfd
, s
, NULL
, NULL
, FALSE
));
2363 if (internal_relocs
!= NULL
)
2365 end
= internal_relocs
+ s
->reloc_count
;
2366 while (internal_relocs
< end
)
2368 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2369 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
2370 unsigned long r_symndx
;
2371 struct elf_link_hash_entry
*h
;
2373 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2374 sym_hashes
= elf_sym_hashes (ibfd
);
2375 r_symndx
= ELF32_R_SYM (internal_relocs
->r_info
);
2377 if (r_symndx
< symtab_hdr
->sh_info
)
2382 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2383 while (h
->root
.type
== bfd_link_hash_indirect
2384 || h
->root
.type
== bfd_link_hash_warning
)
2385 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2388 /* Don't generate entries for weak symbols. */
2389 if (!h
|| (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
2391 if (!elf_discarded_section (s
) && !((bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
) == 0))
2393 switch (ELF32_R_TYPE (internal_relocs
->r_info
))
2406 struct weak_symbol_list
*current
, *new_entry
;
2407 /* Is this symbol already in the list? */
2408 for (current
= list_start
; current
; current
= current
->next
)
2410 if (!strcmp (current
->name
, h
->root
.root
.string
))
2413 if (!current
&& !elf_discarded_section (s
) && (bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
))
2415 /* Will this have an entry in the GOT. */
2416 if (ELF32_R_TYPE (internal_relocs
->r_info
) == R_LM32_16_GOT
)
2418 /* Create a new entry. */
2419 new_entry
= malloc (sizeof (struct weak_symbol_list
));
2422 new_entry
->name
= h
->root
.root
.string
;
2423 new_entry
->next
= NULL
;
2425 if (list_start
== NULL
)
2427 list_start
= new_entry
;
2428 list_end
= new_entry
;
2432 list_end
->next
= new_entry
;
2433 list_end
= new_entry
;
2435 /* Increase count of undefined weak symbols in the got. */
2451 list_end
= list_start
->next
;
2453 list_start
= list_end
;
2456 /* Size sections. */
2457 lm32fdpic_fixup32_section (info
)->size
= (r32_count
+ (htab
->sgot
->size
/ 4) - rgot_weak_count
+ 1) * 4;
2458 if (lm32fdpic_fixup32_section (info
)->size
== 0)
2459 lm32fdpic_fixup32_section (info
)->flags
|= SEC_EXCLUDE
;
2462 lm32fdpic_fixup32_section (info
)->contents
=
2463 bfd_zalloc (dynobj
, lm32fdpic_fixup32_section (info
)->size
);
2464 if (lm32fdpic_fixup32_section (info
)->contents
== NULL
)
2472 /* Create dynamic sections when linking against a dynamic object. */
2475 lm32_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2477 struct elf_lm32_link_hash_table
*htab
;
2478 flagword flags
, pltflags
;
2480 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2481 int ptralign
= 2; /* 32bit */
2483 htab
= lm32_elf_hash_table (info
);
2487 /* Make sure we have a GOT - For the case where we have a dynamic object
2488 but none of the relocs in check_relocs */
2489 if (! create_got_section (abfd
, info
))
2491 if (IS_FDPIC (abfd
) && (htab
->sfixup32
== NULL
))
2493 if (! create_rofixup_section (abfd
, info
))
2497 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2498 .rel[a].bss sections. */
2499 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2500 | SEC_LINKER_CREATED
);
2503 pltflags
|= SEC_CODE
;
2504 if (bed
->plt_not_loaded
)
2505 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
2506 if (bed
->plt_readonly
)
2507 pltflags
|= SEC_READONLY
;
2509 s
= bfd_make_section_with_flags (abfd
, ".plt", pltflags
);
2512 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
2515 if (bed
->want_plt_sym
)
2517 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2519 struct bfd_link_hash_entry
*bh
= NULL
;
2520 struct elf_link_hash_entry
*h
;
2522 if (! (_bfd_generic_link_add_one_symbol
2523 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
2524 (bfd_vma
) 0, NULL
, FALSE
,
2525 get_elf_backend_data (abfd
)->collect
, &bh
)))
2527 h
= (struct elf_link_hash_entry
*) bh
;
2529 h
->type
= STT_OBJECT
;
2530 htab
->root
.hplt
= h
;
2533 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
2537 s
= bfd_make_section_with_flags (abfd
,
2538 bed
->default_use_rela_p
? ".rela.plt" : ".rel.plt",
2539 flags
| SEC_READONLY
);
2542 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2545 if (htab
->sgot
== NULL
2546 && ! create_got_section (abfd
, info
))
2550 const char *secname
;
2555 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2557 secflags
= bfd_get_section_flags (abfd
, sec
);
2558 if ((secflags
& (SEC_DATA
| SEC_LINKER_CREATED
))
2559 || ((secflags
& SEC_HAS_CONTENTS
) != SEC_HAS_CONTENTS
))
2561 secname
= bfd_get_section_name (abfd
, sec
);
2562 relname
= bfd_malloc ((bfd_size_type
) strlen (secname
) + 6);
2563 strcpy (relname
, ".rela");
2564 strcat (relname
, secname
);
2565 if (bfd_get_section_by_name (abfd
, secname
))
2567 s
= bfd_make_section_with_flags (abfd
, relname
,
2568 flags
| SEC_READONLY
);
2570 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2575 if (bed
->want_dynbss
)
2577 /* The .dynbss section is a place to put symbols which are defined
2578 by dynamic objects, are referenced by regular objects, and are
2579 not functions. We must allocate space for them in the process
2580 image and use a R_*_COPY reloc to tell the dynamic linker to
2581 initialize them at run time. The linker script puts the .dynbss
2582 section into the .bss section of the final image. */
2583 s
= bfd_make_section_with_flags (abfd
, ".dynbss",
2584 SEC_ALLOC
| SEC_LINKER_CREATED
);
2588 /* The .rel[a].bss section holds copy relocs. This section is not
2589 normally needed. We need to create it here, though, so that the
2590 linker will map it to an output section. We can't just create it
2591 only if we need it, because we will not know whether we need it
2592 until we have seen all the input files, and the first time the
2593 main linker code calls BFD after examining all the input files
2594 (size_dynamic_sections) the input sections have already been
2595 mapped to the output sections. If the section turns out not to
2596 be needed, we can discard it later. We will never need this
2597 section when generating a shared object, since they do not use
2601 s
= bfd_make_section_with_flags (abfd
,
2602 (bed
->default_use_rela_p
2603 ? ".rela.bss" : ".rel.bss"),
2604 flags
| SEC_READONLY
);
2607 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2615 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2618 lm32_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2619 struct elf_link_hash_entry
*dir
,
2620 struct elf_link_hash_entry
*ind
)
2622 struct elf_lm32_link_hash_entry
* edir
;
2623 struct elf_lm32_link_hash_entry
* eind
;
2625 edir
= (struct elf_lm32_link_hash_entry
*) dir
;
2626 eind
= (struct elf_lm32_link_hash_entry
*) ind
;
2628 if (eind
->dyn_relocs
!= NULL
)
2630 if (edir
->dyn_relocs
!= NULL
)
2632 struct elf_lm32_dyn_relocs
**pp
;
2633 struct elf_lm32_dyn_relocs
*p
;
2635 /* Add reloc counts against the indirect sym to the direct sym
2636 list. Merge any entries against the same section. */
2637 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2639 struct elf_lm32_dyn_relocs
*q
;
2641 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2642 if (q
->sec
== p
->sec
)
2644 q
->pc_count
+= p
->pc_count
;
2645 q
->count
+= p
->count
;
2652 *pp
= edir
->dyn_relocs
;
2655 edir
->dyn_relocs
= eind
->dyn_relocs
;
2656 eind
->dyn_relocs
= NULL
;
2659 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2663 lm32_elf_always_size_sections (bfd
*output_bfd
,
2664 struct bfd_link_info
*info
)
2666 if (!info
->relocatable
)
2668 struct elf_link_hash_entry
*h
;
2670 /* Force a PT_GNU_STACK segment to be created. */
2671 if (! elf_tdata (output_bfd
)->stack_flags
)
2672 elf_tdata (output_bfd
)->stack_flags
= PF_R
| PF_W
| PF_X
;
2674 /* Define __stacksize if it's not defined yet. */
2675 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
2676 FALSE
, FALSE
, FALSE
);
2677 if (! h
|| h
->root
.type
!= bfd_link_hash_defined
2678 || h
->type
!= STT_OBJECT
2681 struct bfd_link_hash_entry
*bh
= NULL
;
2683 if (!(_bfd_generic_link_add_one_symbol
2684 (info
, output_bfd
, "__stacksize",
2685 BSF_GLOBAL
, bfd_abs_section_ptr
, DEFAULT_STACK_SIZE
,
2686 (const char *) NULL
, FALSE
,
2687 get_elf_backend_data (output_bfd
)->collect
, &bh
)))
2690 h
= (struct elf_link_hash_entry
*) bh
;
2692 h
->type
= STT_OBJECT
;
2693 /* This one must NOT be hidden. */
2701 lm32_elf_modify_segment_map (bfd
*output_bfd
,
2702 struct bfd_link_info
*info
)
2704 struct elf_segment_map
*m
;
2706 /* objcopy and strip preserve what's already there using elf32_lm32fdpic_copy_
2707 private_bfd_data (). */
2711 for (m
= elf_tdata (output_bfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2712 if (m
->p_type
== PT_GNU_STACK
)
2717 asection
*sec
= bfd_get_section_by_name (output_bfd
, ".stack");
2718 struct elf_link_hash_entry
*h
;
2722 /* Obtain the pointer to the __stacksize symbol. */
2723 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
2724 FALSE
, FALSE
, FALSE
);
2725 while (h
->root
.type
== bfd_link_hash_indirect
2726 || h
->root
.type
== bfd_link_hash_warning
)
2727 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
2728 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
2730 /* Set the section size from the symbol value. We
2731 intentionally ignore the symbol section. */
2732 if (h
->root
.type
== bfd_link_hash_defined
)
2733 sec
->size
= h
->root
.u
.def
.value
;
2735 sec
->size
= DEFAULT_STACK_SIZE
;
2737 /* Add the stack section to the PT_GNU_STACK segment,
2738 such that its size and alignment requirements make it
2740 m
->sections
[m
->count
] = sec
;
2749 lm32_elf_modify_program_headers (bfd
*output_bfd
,
2750 struct bfd_link_info
*info
)
2752 struct elf_obj_tdata
*tdata
= elf_tdata (output_bfd
);
2753 struct elf_segment_map
*m
;
2754 Elf_Internal_Phdr
*p
;
2759 for (p
= tdata
->phdr
, m
= tdata
->segment_map
; m
!= NULL
; m
= m
->next
, p
++)
2760 if (m
->p_type
== PT_GNU_STACK
)
2765 struct elf_link_hash_entry
*h
;
2767 /* Obtain the pointer to the __stacksize symbol. */
2768 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
2769 FALSE
, FALSE
, FALSE
);
2772 while (h
->root
.type
== bfd_link_hash_indirect
2773 || h
->root
.type
== bfd_link_hash_warning
)
2774 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2775 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
2778 /* Set the header p_memsz from the symbol value. We
2779 intentionally ignore the symbol section. */
2780 if (h
&& h
->root
.type
== bfd_link_hash_defined
)
2781 p
->p_memsz
= h
->root
.u
.def
.value
;
2783 p
->p_memsz
= DEFAULT_STACK_SIZE
;
2793 lm32_elf_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2795 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2796 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2799 BFD_ASSERT (!elf_flags_init (obfd
)
2800 || elf_elfheader (obfd
)->e_flags
== elf_elfheader (ibfd
)->e_flags
);
2802 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
2803 elf_flags_init (obfd
) = TRUE
;
2805 /* Copy object attributes. */
2806 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
2813 lm32_elf_fdpic_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2817 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2818 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2821 if (! lm32_elf_copy_private_bfd_data (ibfd
, obfd
))
2824 if (! elf_tdata (ibfd
) || ! elf_tdata (ibfd
)->phdr
2825 || ! elf_tdata (obfd
) || ! elf_tdata (obfd
)->phdr
)
2828 /* Copy the stack size. */
2829 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
2830 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2832 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
2834 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
2835 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2837 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
2839 /* Rewrite the phdrs, since we're only called after they were first written. */
2840 if (bfd_seek (obfd
, (bfd_signed_vma
) get_elf_backend_data (obfd
)
2841 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
2842 || get_elf_backend_data (obfd
)->s
->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
2843 elf_elfheader (obfd
)->e_phnum
) != 0)
2855 #define ELF_ARCH bfd_arch_lm32
2856 #define ELF_MACHINE_CODE EM_LATTICEMICO32
2857 #define ELF_MAXPAGESIZE 0x1000
2859 #define TARGET_BIG_SYM bfd_elf32_lm32_vec
2860 #define TARGET_BIG_NAME "elf32-lm32"
2862 #define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
2863 #define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
2864 #define elf_info_to_howto lm32_info_to_howto_rela
2865 #define elf_info_to_howto_rel 0
2866 #define elf_backend_rela_normal 1
2867 #define elf_backend_object_p lm32_elf_object_p
2868 #define elf_backend_final_write_processing lm32_elf_final_write_processing
2869 #define elf_backend_can_gc_sections 1
2870 #define elf_backend_can_refcount 1
2871 #define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
2872 #define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
2873 #define elf_backend_plt_readonly 1
2874 #define elf_backend_want_got_plt 1
2875 #define elf_backend_want_plt_sym 0
2876 #define elf_backend_got_header_size 12
2877 #define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
2878 #define elf_backend_check_relocs lm32_elf_check_relocs
2879 #define elf_backend_reloc_type_class lm32_elf_reloc_type_class
2880 #define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
2881 #define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
2882 #define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2883 #define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
2884 #define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
2885 #define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
2886 #define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
2887 #define elf_backend_relocate_section lm32_elf_relocate_section
2889 #include "elf32-target.h"
2891 #undef ELF_MAXPAGESIZE
2892 #define ELF_MAXPAGESIZE 0x4000
2895 #undef TARGET_BIG_SYM
2896 #define TARGET_BIG_SYM bfd_elf32_lm32fdpic_vec
2897 #undef TARGET_BIG_NAME
2898 #define TARGET_BIG_NAME "elf32-lm32fdpic"
2900 #define elf32_bed elf32_lm32fdpic_bed
2902 #undef elf_backend_always_size_sections
2903 #define elf_backend_always_size_sections lm32_elf_always_size_sections
2904 #undef elf_backend_modify_segment_map
2905 #define elf_backend_modify_segment_map lm32_elf_modify_segment_map
2906 #undef elf_backend_modify_program_headers
2907 #define elf_backend_modify_program_headers lm32_elf_modify_program_headers
2908 #undef bfd_elf32_bfd_copy_private_bfd_data
2909 #define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
2911 #include "elf32-target.h"