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_zmalloc (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
),
175 return &ret
->root
.root
;
178 /* Add a fixup to the ROFIXUP section. */
181 _lm32fdpic_add_rofixup (bfd
*output_bfd
, asection
*rofixup
, bfd_vma relocation
)
183 bfd_vma fixup_offset
;
185 if (rofixup
->flags
& SEC_EXCLUDE
)
188 fixup_offset
= rofixup
->reloc_count
* 4;
189 if (rofixup
->contents
)
191 BFD_ASSERT (fixup_offset
< rofixup
->size
);
192 if (fixup_offset
< rofixup
->size
)
193 bfd_put_32 (output_bfd
, relocation
, rofixup
->contents
+ fixup_offset
);
195 rofixup
->reloc_count
++;
200 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
201 shortcuts to them in our hash table. */
204 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
206 struct elf_lm32_link_hash_table
*htab
;
209 /* This function may be called more than once. */
210 s
= bfd_get_linker_section (dynobj
, ".got");
214 htab
= lm32_elf_hash_table (info
);
218 if (! _bfd_elf_create_got_section (dynobj
, info
))
221 htab
->sgot
= bfd_get_linker_section (dynobj
, ".got");
222 htab
->sgotplt
= bfd_get_linker_section (dynobj
, ".got.plt");
223 htab
->srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
224 if (! htab
->sgot
|| ! htab
->sgotplt
|| ! htab
->srelgot
)
230 /* Create .rofixup sections in DYNOBJ, and set up
231 shortcuts to them in our hash table. */
234 create_rofixup_section (bfd
*dynobj
, struct bfd_link_info
*info
)
236 struct elf_lm32_link_hash_table
*htab
;
237 htab
= lm32_elf_hash_table (info
);
242 /* Fixup section for R_LM32_32 relocs. */
243 lm32fdpic_fixup32_section (info
)
244 = bfd_make_section_anyway_with_flags (dynobj
,
252 if (lm32fdpic_fixup32_section (info
) == NULL
253 || ! bfd_set_section_alignment (dynobj
,
254 lm32fdpic_fixup32_section (info
), 2))
260 static reloc_howto_type lm32_elf_howto_table
[] =
262 /* This reloc does nothing. */
263 HOWTO (R_LM32_NONE
, /* type */
265 2, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE
, /* pc_relative */
269 complain_overflow_bitfield
,/* complain_on_overflow */
270 bfd_elf_generic_reloc
, /* special_function */
271 "R_LM32_NONE", /* name */
272 FALSE
, /* partial_inplace */
275 FALSE
), /* pcrel_offset */
277 /* An 8 bit absolute relocation. */
278 HOWTO (R_LM32_8
, /* type */
280 0, /* size (0 = byte, 1 = short, 2 = long) */
282 FALSE
, /* pc_relative */
284 complain_overflow_bitfield
,/* complain_on_overflow */
285 bfd_elf_generic_reloc
, /* special_function */
286 "R_LM32_8", /* name */
287 FALSE
, /* partial_inplace */
290 FALSE
), /* pcrel_offset */
292 /* A 16 bit absolute relocation. */
293 HOWTO (R_LM32_16
, /* type */
295 1, /* size (0 = byte, 1 = short, 2 = long) */
297 FALSE
, /* pc_relative */
299 complain_overflow_bitfield
,/* complain_on_overflow */
300 bfd_elf_generic_reloc
, /* special_function */
301 "R_LM32_16", /* name */
302 FALSE
, /* partial_inplace */
304 0xffff, /* dst_mask */
305 FALSE
), /* pcrel_offset */
307 /* A 32 bit absolute relocation. */
308 HOWTO (R_LM32_32
, /* type */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
312 FALSE
, /* pc_relative */
314 complain_overflow_bitfield
,/* complain_on_overflow */
315 bfd_elf_generic_reloc
, /* special_function */
316 "R_LM32_32", /* name */
317 FALSE
, /* partial_inplace */
319 0xffffffff, /* dst_mask */
320 FALSE
), /* pcrel_offset */
322 HOWTO (R_LM32_HI16
, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE
, /* pc_relative */
328 complain_overflow_bitfield
,/* complain_on_overflow */
329 bfd_elf_generic_reloc
, /* special_function */
330 "R_LM32_HI16", /* name */
331 FALSE
, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE
), /* pcrel_offset */
336 HOWTO (R_LM32_LO16
, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 FALSE
, /* pc_relative */
342 complain_overflow_dont
, /* complain_on_overflow */
343 bfd_elf_generic_reloc
, /* special_function */
344 "R_LM32_LO16", /* name */
345 FALSE
, /* partial_inplace */
347 0xffff, /* dst_mask */
348 FALSE
), /* pcrel_offset */
350 HOWTO (R_LM32_GPREL16
, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE
, /* pc_relative */
356 complain_overflow_dont
, /* complain_on_overflow */
357 lm32_elf_gprel_reloc
, /* special_function */
358 "R_LM32_GPREL16", /* name */
359 FALSE
, /* partial_inplace */
361 0xffff, /* dst_mask */
362 FALSE
), /* pcrel_offset */
364 HOWTO (R_LM32_CALL
, /* type */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
368 TRUE
, /* pc_relative */
370 complain_overflow_signed
, /* complain_on_overflow */
371 bfd_elf_generic_reloc
, /* special_function */
372 "R_LM32_CALL", /* name */
373 FALSE
, /* partial_inplace */
375 0x3ffffff, /* dst_mask */
376 TRUE
), /* pcrel_offset */
378 HOWTO (R_LM32_BRANCH
, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 TRUE
, /* pc_relative */
384 complain_overflow_signed
, /* complain_on_overflow */
385 bfd_elf_generic_reloc
, /* special_function */
386 "R_LM32_BRANCH", /* name */
387 FALSE
, /* partial_inplace */
389 0xffff, /* dst_mask */
390 TRUE
), /* pcrel_offset */
392 /* GNU extension to record C++ vtable hierarchy. */
393 HOWTO (R_LM32_GNU_VTINHERIT
, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 FALSE
, /* pc_relative */
399 complain_overflow_dont
, /* complain_on_overflow */
400 NULL
, /* special_function */
401 "R_LM32_GNU_VTINHERIT", /* name */
402 FALSE
, /* partial_inplace */
405 FALSE
), /* pcrel_offset */
407 /* GNU extension to record C++ vtable member usage. */
408 HOWTO (R_LM32_GNU_VTENTRY
, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE
, /* pc_relative */
414 complain_overflow_dont
, /* complain_on_overflow */
415 _bfd_elf_rel_vtable_reloc_fn
,/* special_function */
416 "R_LM32_GNU_VTENTRY", /* name */
417 FALSE
, /* partial_inplace */
420 FALSE
), /* pcrel_offset */
422 HOWTO (R_LM32_16_GOT
, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE
, /* pc_relative */
428 complain_overflow_signed
, /* complain_on_overflow */
429 bfd_elf_generic_reloc
, /* special_function */
430 "R_LM32_16_GOT", /* name */
431 FALSE
, /* partial_inplace */
433 0xffff, /* dst_mask */
434 FALSE
), /* pcrel_offset */
436 HOWTO (R_LM32_GOTOFF_HI16
, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 FALSE
, /* pc_relative */
442 complain_overflow_dont
, /* complain_on_overflow */
443 bfd_elf_generic_reloc
, /* special_function */
444 "R_LM32_GOTOFF_HI16", /* name */
445 FALSE
, /* partial_inplace */
446 0xffff, /* src_mask */
447 0xffff, /* dst_mask */
448 FALSE
), /* pcrel_offset */
450 HOWTO (R_LM32_GOTOFF_LO16
, /* type */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE
, /* pc_relative */
456 complain_overflow_dont
, /* complain_on_overflow */
457 bfd_elf_generic_reloc
, /* special_function */
458 "R_LM32_GOTOFF_LO16", /* name */
459 FALSE
, /* partial_inplace */
460 0xffff, /* src_mask */
461 0xffff, /* dst_mask */
462 FALSE
), /* pcrel_offset */
464 HOWTO (R_LM32_COPY
, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 FALSE
, /* pc_relative */
470 complain_overflow_bitfield
, /* complain_on_overflow */
471 bfd_elf_generic_reloc
, /* special_function */
472 "R_LM32_COPY", /* name */
473 FALSE
, /* partial_inplace */
474 0xffffffff, /* src_mask */
475 0xffffffff, /* dst_mask */
476 FALSE
), /* pcrel_offset */
478 HOWTO (R_LM32_GLOB_DAT
, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 FALSE
, /* pc_relative */
484 complain_overflow_bitfield
, /* complain_on_overflow */
485 bfd_elf_generic_reloc
, /* special_function */
486 "R_LM32_GLOB_DAT", /* name */
487 FALSE
, /* partial_inplace */
488 0xffffffff, /* src_mask */
489 0xffffffff, /* dst_mask */
490 FALSE
), /* pcrel_offset */
492 HOWTO (R_LM32_JMP_SLOT
, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE
, /* pc_relative */
498 complain_overflow_bitfield
, /* complain_on_overflow */
499 bfd_elf_generic_reloc
, /* special_function */
500 "R_LM32_JMP_SLOT", /* name */
501 FALSE
, /* partial_inplace */
502 0xffffffff, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE
), /* pcrel_offset */
506 HOWTO (R_LM32_RELATIVE
, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 FALSE
, /* pc_relative */
512 complain_overflow_bitfield
, /* complain_on_overflow */
513 bfd_elf_generic_reloc
, /* special_function */
514 "R_LM32_RELATIVE", /* name */
515 FALSE
, /* partial_inplace */
516 0xffffffff, /* src_mask */
517 0xffffffff, /* dst_mask */
518 FALSE
), /* pcrel_offset */
522 /* Map BFD reloc types to lm32 ELF reloc types. */
524 struct lm32_reloc_map
526 bfd_reloc_code_real_type bfd_reloc_val
;
527 unsigned char elf_reloc_val
;
530 static const struct lm32_reloc_map lm32_reloc_map
[] =
532 { BFD_RELOC_NONE
, R_LM32_NONE
},
533 { BFD_RELOC_8
, R_LM32_8
},
534 { BFD_RELOC_16
, R_LM32_16
},
535 { BFD_RELOC_32
, R_LM32_32
},
536 { BFD_RELOC_HI16
, R_LM32_HI16
},
537 { BFD_RELOC_LO16
, R_LM32_LO16
},
538 { BFD_RELOC_GPREL16
, R_LM32_GPREL16
},
539 { BFD_RELOC_LM32_CALL
, R_LM32_CALL
},
540 { BFD_RELOC_LM32_BRANCH
, R_LM32_BRANCH
},
541 { BFD_RELOC_VTABLE_INHERIT
, R_LM32_GNU_VTINHERIT
},
542 { BFD_RELOC_VTABLE_ENTRY
, R_LM32_GNU_VTENTRY
},
543 { BFD_RELOC_LM32_16_GOT
, R_LM32_16_GOT
},
544 { BFD_RELOC_LM32_GOTOFF_HI16
, R_LM32_GOTOFF_HI16
},
545 { BFD_RELOC_LM32_GOTOFF_LO16
, R_LM32_GOTOFF_LO16
},
546 { BFD_RELOC_LM32_COPY
, R_LM32_COPY
},
547 { BFD_RELOC_LM32_GLOB_DAT
, R_LM32_GLOB_DAT
},
548 { BFD_RELOC_LM32_JMP_SLOT
, R_LM32_JMP_SLOT
},
549 { BFD_RELOC_LM32_RELATIVE
, R_LM32_RELATIVE
},
552 static reloc_howto_type
*
553 lm32_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
554 bfd_reloc_code_real_type code
)
558 for (i
= 0; i
< sizeof (lm32_reloc_map
) / sizeof (lm32_reloc_map
[0]); i
++)
559 if (lm32_reloc_map
[i
].bfd_reloc_val
== code
)
560 return &lm32_elf_howto_table
[lm32_reloc_map
[i
].elf_reloc_val
];
564 static reloc_howto_type
*
565 lm32_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
571 i
< sizeof (lm32_elf_howto_table
) / sizeof (lm32_elf_howto_table
[0]);
573 if (lm32_elf_howto_table
[i
].name
!= NULL
574 && strcasecmp (lm32_elf_howto_table
[i
].name
, r_name
) == 0)
575 return &lm32_elf_howto_table
[i
];
581 /* Set the howto pointer for an Lattice Mico32 ELF reloc. */
584 lm32_info_to_howto_rela (bfd
*abfd ATTRIBUTE_UNUSED
,
586 Elf_Internal_Rela
*dst
)
590 r_type
= ELF32_R_TYPE (dst
->r_info
);
591 BFD_ASSERT (r_type
< (unsigned int) R_LM32_max
);
592 cache_ptr
->howto
= &lm32_elf_howto_table
[r_type
];
595 /* Set the right machine number for an Lattice Mico32 ELF file. */
598 lm32_elf_object_p (bfd
*abfd
)
600 return bfd_default_set_arch_mach (abfd
, bfd_arch_lm32
, bfd_mach_lm32
);
603 /* Set machine type flags just before file is written out. */
606 lm32_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
608 elf_elfheader (abfd
)->e_machine
= EM_LATTICEMICO32
;
609 elf_elfheader (abfd
)->e_flags
&=~ EF_LM32_MACH
;
610 switch (bfd_get_mach (abfd
))
613 elf_elfheader (abfd
)->e_flags
|= E_LM32_MACH
;
620 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
621 dangerous relocation. */
624 lm32_elf_assign_gp (bfd
*output_bfd
, bfd_vma
*pgp
)
630 /* If we've already figured out what GP will be, just return it. */
631 *pgp
= _bfd_get_gp_value (output_bfd
);
635 count
= bfd_get_symcount (output_bfd
);
636 sym
= bfd_get_outsymbols (output_bfd
);
638 /* The linker script will have created a symbol named `_gp' with the
639 appropriate value. */
644 for (i
= 0; i
< count
; i
++, sym
++)
648 name
= bfd_asymbol_name (*sym
);
649 if (*name
== '_' && strcmp (name
, "_gp") == 0)
651 *pgp
= bfd_asymbol_value (*sym
);
652 _bfd_set_gp_value (output_bfd
, *pgp
);
660 /* Only get the error once. */
662 _bfd_set_gp_value (output_bfd
, *pgp
);
669 /* We have to figure out the gp value, so that we can adjust the
670 symbol value correctly. We look up the symbol _gp in the output
671 BFD. If we can't find it, we're stuck. We cache it in the ELF
672 target data. We don't need to adjust the symbol value for an
673 external symbol if we are producing relocatable output. */
675 static bfd_reloc_status_type
676 lm32_elf_final_gp (bfd
*output_bfd
, asymbol
*symbol
, bfd_boolean relocatable
,
677 char **error_message
, bfd_vma
*pgp
)
679 if (bfd_is_und_section (symbol
->section
) && !relocatable
)
682 return bfd_reloc_undefined
;
685 *pgp
= _bfd_get_gp_value (output_bfd
);
686 if (*pgp
== 0 && (!relocatable
|| (symbol
->flags
& BSF_SECTION_SYM
) != 0))
690 /* Make up a value. */
691 *pgp
= symbol
->section
->output_section
->vma
+ 0x4000;
692 _bfd_set_gp_value (output_bfd
, *pgp
);
694 else if (!lm32_elf_assign_gp (output_bfd
, pgp
))
698 _("global pointer relative relocation when _gp not defined");
699 return bfd_reloc_dangerous
;
706 static bfd_reloc_status_type
707 lm32_elf_do_gprel_relocate (bfd
*abfd
,
708 reloc_howto_type
*howto
,
709 asection
*input_section ATTRIBUTE_UNUSED
,
712 bfd_vma symbol_value
,
715 return _bfd_final_link_relocate (howto
, abfd
, input_section
,
716 data
, offset
, symbol_value
, addend
);
719 static bfd_reloc_status_type
720 lm32_elf_gprel_reloc (bfd
*abfd
,
721 arelent
*reloc_entry
,
724 asection
*input_section
,
730 bfd_reloc_status_type r
;
732 if (output_bfd
!= (bfd
*) NULL
733 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
734 && (!reloc_entry
->howto
->partial_inplace
|| reloc_entry
->addend
== 0))
736 reloc_entry
->address
+= input_section
->output_offset
;
740 if (output_bfd
!= NULL
)
743 relocation
= symbol
->value
744 + symbol
->section
->output_section
->vma
+ symbol
->section
->output_offset
;
747 lm32_elf_final_gp (abfd
, symbol
, FALSE
, msg
, &gp
)) == bfd_reloc_ok
)
749 relocation
= relocation
+ reloc_entry
->addend
- gp
;
750 reloc_entry
->addend
= 0;
751 if ((signed) relocation
< -32768 || (signed) relocation
> 32767)
753 *msg
= _("global pointer relative address out of range");
754 r
= bfd_reloc_outofrange
;
758 r
= lm32_elf_do_gprel_relocate (abfd
, reloc_entry
->howto
,
760 data
, reloc_entry
->address
,
761 relocation
, reloc_entry
->addend
);
768 /* Find the segment number in which OSEC, and output section, is
772 _lm32fdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
774 struct elf_segment_map
*m
;
775 Elf_Internal_Phdr
*p
;
777 /* Find the segment that contains the output_section. */
778 for (m
= elf_tdata (output_bfd
)->segment_map
,
779 p
= elf_tdata (output_bfd
)->phdr
;
785 for (i
= m
->count
- 1; i
>= 0; i
--)
786 if (m
->sections
[i
] == osec
)
793 return p
- elf_tdata (output_bfd
)->phdr
;
796 /* Determine if an output section is read-only. */
798 inline static bfd_boolean
799 _lm32fdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
801 unsigned seg
= _lm32fdpic_osec_to_segment (output_bfd
, osec
);
803 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
806 /* Relocate a section */
809 lm32_elf_relocate_section (bfd
*output_bfd
,
810 struct bfd_link_info
*info
,
812 asection
*input_section
,
814 Elf_Internal_Rela
*relocs
,
815 Elf_Internal_Sym
*local_syms
,
816 asection
**local_sections
)
818 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
819 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
820 Elf_Internal_Rela
*rel
, *relend
;
821 struct elf_lm32_link_hash_table
*htab
= lm32_elf_hash_table (info
);
823 bfd_vma
*local_got_offsets
;
829 dynobj
= htab
->root
.dynobj
;
830 local_got_offsets
= elf_local_got_offsets (input_bfd
);
834 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
835 sym_hashes
= elf_sym_hashes (input_bfd
);
838 relend
= relocs
+ input_section
->reloc_count
;
839 for (; rel
< relend
; rel
++)
841 reloc_howto_type
*howto
;
843 unsigned long r_symndx
;
844 Elf_Internal_Sym
*sym
;
846 struct elf_link_hash_entry
*h
;
849 bfd_reloc_status_type r
;
850 const char *name
= NULL
;
852 r_symndx
= ELF32_R_SYM (rel
->r_info
);
853 r_type
= ELF32_R_TYPE (rel
->r_info
);
855 if (r_type
== R_LM32_GNU_VTENTRY
856 || r_type
== R_LM32_GNU_VTINHERIT
)
863 howto
= lm32_elf_howto_table
+ r_type
;
865 if (r_symndx
< symtab_hdr
->sh_info
)
867 /* It's a local symbol. */
868 sym
= local_syms
+ r_symndx
;
869 sec
= local_sections
[r_symndx
];
870 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
871 name
= bfd_elf_string_from_elf_section
872 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
873 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
877 /* It's a global symbol. */
878 bfd_boolean unresolved_reloc
;
881 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
882 r_symndx
, symtab_hdr
, sym_hashes
,
884 unresolved_reloc
, warned
);
885 name
= h
->root
.root
.string
;
888 if (sec
!= NULL
&& discarded_section (sec
))
889 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
890 rel
, 1, relend
, howto
, 0, contents
);
892 if (info
->relocatable
)
894 /* This is a relocatable link. We don't have to change
895 anything, unless the reloc is against a section symbol,
896 in which case we have to adjust according to where the
897 section symbol winds up in the output section. */
898 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
901 /* If partial_inplace, we need to store any additional addend
902 back in the section. */
903 if (! howto
->partial_inplace
)
906 /* Shouldn't reach here. */
915 if (!lm32_elf_assign_gp (output_bfd
, &gp
))
916 r
= bfd_reloc_dangerous
;
919 relocation
= relocation
+ rel
->r_addend
- gp
;
921 if ((signed)relocation
< -32768 || (signed)relocation
> 32767)
922 r
= bfd_reloc_outofrange
;
925 r
= _bfd_final_link_relocate (howto
, input_bfd
,
926 input_section
, contents
,
927 rel
->r_offset
, relocation
,
933 /* Relocation is to the entry for this symbol in the global
935 BFD_ASSERT (sgot
!= NULL
);
942 BFD_ASSERT (off
!= (bfd_vma
) -1);
944 dyn
= htab
->root
.dynamic_sections_created
;
945 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
952 /* This is actually a static link, or it is a
953 -Bsymbolic link and the symbol is defined
954 locally, or the symbol was forced to be local
955 because of a version file. We must initialize
956 this entry in the global offset table. Since the
957 offset must always be a multiple of 4, we use the
958 least significant bit to record whether we have
959 initialized it already.
961 When doing a dynamic link, we create a .rela.got
962 relocation entry to initialize the value. This
963 is done in the finish_dynamic_symbol routine. */
968 /* Write entry in GOT */
969 bfd_put_32 (output_bfd
, relocation
,
970 sgot
->contents
+ off
);
971 /* Create entry in .rofixup pointing to GOT entry. */
972 if (IS_FDPIC (output_bfd
) && h
->root
.type
!= bfd_link_hash_undefweak
)
974 _lm32fdpic_add_rofixup (output_bfd
,
975 lm32fdpic_fixup32_section
977 sgot
->output_section
->vma
978 + sgot
->output_offset
981 /* Mark GOT entry as having been written. */
986 relocation
= sgot
->output_offset
+ off
;
993 BFD_ASSERT (local_got_offsets
!= NULL
994 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
996 /* Get offset into GOT table. */
997 off
= local_got_offsets
[r_symndx
];
999 /* The offset must always be a multiple of 4. We use
1000 the least significant bit to record whether we have
1001 already processed this entry. */
1006 /* Write entry in GOT. */
1007 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1008 /* Create entry in .rofixup pointing to GOT entry. */
1009 if (IS_FDPIC (output_bfd
))
1011 _lm32fdpic_add_rofixup (output_bfd
,
1012 lm32fdpic_fixup32_section
1014 sgot
->output_section
->vma
1015 + sgot
->output_offset
1022 Elf_Internal_Rela outrel
;
1024 /* We need to generate a R_LM32_RELATIVE reloc
1025 for the dynamic linker. */
1026 srelgot
= bfd_get_linker_section (dynobj
,
1028 BFD_ASSERT (srelgot
!= NULL
);
1030 outrel
.r_offset
= (sgot
->output_section
->vma
1031 + sgot
->output_offset
1033 outrel
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
1034 outrel
.r_addend
= relocation
;
1035 loc
= srelgot
->contents
;
1036 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
1037 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
1038 ++srelgot
->reloc_count
;
1041 local_got_offsets
[r_symndx
] |= 1;
1045 relocation
= sgot
->output_offset
+ off
;
1048 /* Addend should be zero. */
1049 if (rel
->r_addend
!= 0)
1050 (*_bfd_error_handler
) (_("internal error: addend should be zero for R_LM32_16_GOT"));
1052 r
= _bfd_final_link_relocate (howto
,
1061 case R_LM32_GOTOFF_LO16
:
1062 case R_LM32_GOTOFF_HI16
:
1063 /* Relocation is offset from GOT. */
1064 BFD_ASSERT (sgot
!= NULL
);
1065 relocation
-= sgot
->output_section
->vma
;
1066 /* Account for sign-extension. */
1067 if ((r_type
== R_LM32_GOTOFF_HI16
)
1068 && ((relocation
+ rel
->r_addend
) & 0x8000))
1069 rel
->r_addend
+= 0x10000;
1070 r
= _bfd_final_link_relocate (howto
,
1080 if (IS_FDPIC (output_bfd
))
1082 if ((!h
) || (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
1084 /* Only create .rofixup entries for relocs in loadable sections. */
1085 if ((bfd_get_section_flags (output_bfd
, input_section
->output_section
)
1086 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
1089 /* Check address to be modified is writable. */
1090 if (_lm32fdpic_osec_readonly_p (output_bfd
,
1094 info
->callbacks
->warning
1096 _("cannot emit dynamic relocations in read-only section"),
1097 name
, input_bfd
, input_section
, rel
->r_offset
);
1100 /* Create entry in .rofixup section. */
1101 _lm32fdpic_add_rofixup (output_bfd
,
1102 lm32fdpic_fixup32_section (info
),
1103 input_section
->output_section
->vma
1104 + input_section
->output_offset
1112 r
= _bfd_final_link_relocate (howto
,
1123 if (r
!= bfd_reloc_ok
)
1125 const char *msg
= NULL
;
1128 lm32_info_to_howto_rela (input_bfd
, &bfd_reloc
, rel
);
1129 howto
= bfd_reloc
.howto
;
1132 name
= h
->root
.root
.string
;
1135 name
= (bfd_elf_string_from_elf_section
1136 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
1137 if (name
== NULL
|| *name
== '\0')
1138 name
= bfd_section_name (input_bfd
, sec
);
1143 case bfd_reloc_overflow
:
1145 && (h
->root
.type
== bfd_link_hash_undefweak
))
1147 if (! ((*info
->callbacks
->reloc_overflow
)
1148 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1149 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
)))
1153 case bfd_reloc_undefined
:
1154 if (! ((*info
->callbacks
->undefined_symbol
)
1155 (info
, name
, input_bfd
, input_section
,
1156 rel
->r_offset
, TRUE
)))
1160 case bfd_reloc_outofrange
:
1161 msg
= _("internal error: out of range error");
1164 case bfd_reloc_notsupported
:
1165 msg
= _("internal error: unsupported relocation error");
1168 case bfd_reloc_dangerous
:
1169 msg
= _("internal error: dangerous error");
1173 msg
= _("internal error: unknown error");
1177 if (!((*info
->callbacks
->warning
)
1178 (info
, msg
, name
, input_bfd
, input_section
,
1190 lm32_elf_gc_mark_hook (asection
*sec
,
1191 struct bfd_link_info
*info
,
1192 Elf_Internal_Rela
*rel
,
1193 struct elf_link_hash_entry
*h
,
1194 Elf_Internal_Sym
*sym
)
1197 switch (ELF32_R_TYPE (rel
->r_info
))
1199 case R_LM32_GNU_VTINHERIT
:
1200 case R_LM32_GNU_VTENTRY
:
1204 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1208 lm32_elf_gc_sweep_hook (bfd
*abfd
,
1209 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1211 const Elf_Internal_Rela
*relocs ATTRIBUTE_UNUSED
)
1213 /* Update the got entry reference counts for the section being removed. */
1214 Elf_Internal_Shdr
*symtab_hdr
;
1215 struct elf_link_hash_entry
**sym_hashes
;
1216 bfd_signed_vma
*local_got_refcounts
;
1217 const Elf_Internal_Rela
*rel
, *relend
;
1219 elf_section_data (sec
)->local_dynrel
= NULL
;
1221 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1222 sym_hashes
= elf_sym_hashes (abfd
);
1223 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1225 relend
= relocs
+ sec
->reloc_count
;
1226 for (rel
= relocs
; rel
< relend
; rel
++)
1228 unsigned long r_symndx
;
1229 struct elf_link_hash_entry
*h
= NULL
;
1231 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1232 if (r_symndx
>= symtab_hdr
->sh_info
)
1234 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1235 while (h
->root
.type
== bfd_link_hash_indirect
1236 || h
->root
.type
== bfd_link_hash_warning
)
1237 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1240 switch (ELF32_R_TYPE (rel
->r_info
))
1245 if (h
->got
.refcount
> 0)
1250 if (local_got_refcounts
&& local_got_refcounts
[r_symndx
] > 0)
1251 local_got_refcounts
[r_symndx
]--;
1262 /* Look through the relocs for a section during the first phase. */
1265 lm32_elf_check_relocs (bfd
*abfd
,
1266 struct bfd_link_info
*info
,
1268 const Elf_Internal_Rela
*relocs
)
1270 Elf_Internal_Shdr
*symtab_hdr
;
1271 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
1272 const Elf_Internal_Rela
*rel
;
1273 const Elf_Internal_Rela
*rel_end
;
1274 struct elf_lm32_link_hash_table
*htab
;
1277 if (info
->relocatable
)
1280 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1281 sym_hashes
= elf_sym_hashes (abfd
);
1282 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof (Elf32_External_Sym
);
1283 if (!elf_bad_symtab (abfd
))
1284 sym_hashes_end
-= symtab_hdr
->sh_info
;
1286 htab
= lm32_elf_hash_table (info
);
1290 dynobj
= htab
->root
.dynobj
;
1292 rel_end
= relocs
+ sec
->reloc_count
;
1293 for (rel
= relocs
; rel
< rel_end
; rel
++)
1296 struct elf_link_hash_entry
*h
;
1297 unsigned long r_symndx
;
1299 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1300 r_type
= ELF32_R_TYPE (rel
->r_info
);
1301 if (r_symndx
< symtab_hdr
->sh_info
)
1305 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1306 while (h
->root
.type
== bfd_link_hash_indirect
1307 || h
->root
.type
== bfd_link_hash_warning
)
1308 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1311 /* Some relocs require a global offset table. */
1312 if (htab
->sgot
== NULL
)
1317 case R_LM32_GOTOFF_HI16
:
1318 case R_LM32_GOTOFF_LO16
:
1320 htab
->root
.dynobj
= dynobj
= abfd
;
1321 if (! create_got_section (dynobj
, info
))
1327 /* Some relocs require a rofixup table. */
1328 if (IS_FDPIC (abfd
))
1333 /* FDPIC requires a GOT if there is a .rofixup section
1334 (Normal ELF doesn't). */
1336 htab
->root
.dynobj
= dynobj
= abfd
;
1337 if (! create_got_section (dynobj
, info
))
1339 /* Create .rofixup section */
1340 if (htab
->sfixup32
== NULL
)
1342 if (! create_rofixup_section (dynobj
, info
))
1347 case R_LM32_GOTOFF_HI16
:
1348 case R_LM32_GOTOFF_LO16
:
1349 /* Create .rofixup section. */
1350 if (htab
->sfixup32
== NULL
)
1353 htab
->root
.dynobj
= dynobj
= abfd
;
1354 if (! create_rofixup_section (dynobj
, info
))
1365 h
->got
.refcount
+= 1;
1368 bfd_signed_vma
*local_got_refcounts
;
1370 /* This is a global offset table entry for a local symbol. */
1371 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1372 if (local_got_refcounts
== NULL
)
1376 size
= symtab_hdr
->sh_info
;
1377 size
*= sizeof (bfd_signed_vma
);
1378 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1379 if (local_got_refcounts
== NULL
)
1381 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1383 local_got_refcounts
[r_symndx
] += 1;
1387 /* This relocation describes the C++ object vtable hierarchy.
1388 Reconstruct it for later use during GC. */
1389 case R_LM32_GNU_VTINHERIT
:
1390 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1394 /* This relocation describes which C++ vtable entries are actually
1395 used. Record for later use during GC. */
1396 case R_LM32_GNU_VTENTRY
:
1397 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1407 /* Finish up the dynamic sections. */
1410 lm32_elf_finish_dynamic_sections (bfd
*output_bfd
,
1411 struct bfd_link_info
*info
)
1413 struct elf_lm32_link_hash_table
*htab
;
1418 htab
= lm32_elf_hash_table (info
);
1422 dynobj
= htab
->root
.dynobj
;
1424 sgot
= htab
->sgotplt
;
1425 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
1427 if (htab
->root
.dynamic_sections_created
)
1430 Elf32_External_Dyn
*dyncon
, *dynconend
;
1432 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
1434 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1435 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
1437 for (; dyncon
< dynconend
; dyncon
++)
1439 Elf_Internal_Dyn dyn
;
1442 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1450 s
= htab
->sgot
->output_section
;
1453 s
= htab
->srelplt
->output_section
;
1455 BFD_ASSERT (s
!= NULL
);
1456 dyn
.d_un
.d_ptr
= s
->vma
;
1457 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1461 s
= htab
->srelplt
->output_section
;
1462 BFD_ASSERT (s
!= NULL
);
1463 dyn
.d_un
.d_val
= s
->size
;
1464 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1468 /* My reading of the SVR4 ABI indicates that the
1469 procedure linkage table relocs (DT_JMPREL) should be
1470 included in the overall relocs (DT_RELA). This is
1471 what Solaris does. However, UnixWare can not handle
1472 that case. Therefore, we override the DT_RELASZ entry
1473 here to make it not include the JMPREL relocs. Since
1474 the linker script arranges for .rela.plt to follow all
1475 other relocation sections, we don't have to worry
1476 about changing the DT_RELA entry. */
1477 if (htab
->srelplt
!= NULL
)
1479 s
= htab
->srelplt
->output_section
;
1480 dyn
.d_un
.d_val
-= s
->size
;
1482 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1487 /* Fill in the first entry in the procedure linkage table. */
1489 if (splt
&& splt
->size
> 0)
1493 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
1494 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
1495 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
1496 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
1497 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
1502 /* addr = .got + 4 */
1503 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
1504 bfd_put_32 (output_bfd
,
1505 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
1507 bfd_put_32 (output_bfd
,
1508 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
1509 splt
->contents
+ 4);
1510 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
1511 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
1512 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
1515 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1520 /* Fill in the first three entries in the global offset table. */
1521 if (sgot
&& sgot
->size
> 0)
1524 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1526 bfd_put_32 (output_bfd
,
1527 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1529 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
1530 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
1532 /* FIXME: This can be null if create_dynamic_sections wasn't called. */
1533 if (elf_section_data (sgot
->output_section
) != NULL
)
1534 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1537 if (lm32fdpic_fixup32_section (info
))
1539 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
1540 bfd_vma got_value
= hgot
->root
.u
.def
.value
1541 + hgot
->root
.u
.def
.section
->output_section
->vma
1542 + hgot
->root
.u
.def
.section
->output_offset
;
1543 struct bfd_link_hash_entry
*hend
;
1545 /* Last entry is pointer to GOT. */
1546 _lm32fdpic_add_rofixup (output_bfd
, lm32fdpic_fixup32_section (info
), got_value
);
1548 /* Check we wrote enough entries. */
1549 if (lm32fdpic_fixup32_section (info
)->size
1550 != (lm32fdpic_fixup32_section (info
)->reloc_count
* 4))
1552 (*_bfd_error_handler
)
1553 ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d",
1554 lm32fdpic_fixup32_section (info
)->size
/4,
1555 lm32fdpic_fixup32_section (info
)->reloc_count
);
1559 hend
= bfd_link_hash_lookup (info
->hash
, "__ROFIXUP_END__",
1560 FALSE
, FALSE
, TRUE
);
1562 && (hend
->type
== bfd_link_hash_defined
1563 || hend
->type
== bfd_link_hash_defweak
))
1566 lm32fdpic_fixup32_section (info
)->output_section
->vma
1567 + lm32fdpic_fixup32_section (info
)->output_offset
1568 + lm32fdpic_fixup32_section (info
)->size
1569 - hend
->u
.def
.section
->output_section
->vma
1570 - hend
->u
.def
.section
->output_offset
;
1571 BFD_ASSERT (hend
->u
.def
.value
== value
);
1572 if (hend
->u
.def
.value
!= value
)
1574 (*_bfd_error_handler
)
1575 ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend
->u
.def
.value
, value
);
1584 /* Finish up dynamic symbol handling. We set the contents of various
1585 dynamic sections here. */
1588 lm32_elf_finish_dynamic_symbol (bfd
*output_bfd
,
1589 struct bfd_link_info
*info
,
1590 struct elf_link_hash_entry
*h
,
1591 Elf_Internal_Sym
*sym
)
1593 struct elf_lm32_link_hash_table
*htab
;
1596 htab
= lm32_elf_hash_table (info
);
1600 if (h
->plt
.offset
!= (bfd_vma
) -1)
1608 Elf_Internal_Rela rela
;
1610 /* This symbol has an entry in the procedure linkage table. Set
1612 BFD_ASSERT (h
->dynindx
!= -1);
1615 sgot
= htab
->sgotplt
;
1616 srela
= htab
->srelplt
;
1617 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1619 /* Get the index in the procedure linkage table which
1620 corresponds to this symbol. This is the index of this symbol
1621 in all the symbols for which we are making plt entries. The
1622 first entry in the procedure linkage table is reserved. */
1623 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1625 /* Get the offset into the .got table of the entry that
1626 corresponds to this function. Each .got entry is 4 bytes.
1627 The first three are reserved. */
1628 got_offset
= (plt_index
+ 3) * 4;
1630 /* Fill in the entry in the procedure linkage table. */
1640 /* Fill in the entry in the global offset table. */
1641 bfd_put_32 (output_bfd
,
1642 (splt
->output_section
->vma
1643 + splt
->output_offset
1645 + 12), /* same offset */
1646 sgot
->contents
+ got_offset
);
1648 /* Fill in the entry in the .rela.plt section. */
1649 rela
.r_offset
= (sgot
->output_section
->vma
1650 + sgot
->output_offset
1652 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_JMP_SLOT
);
1654 loc
= srela
->contents
;
1655 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
1656 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1658 if (!h
->def_regular
)
1660 /* Mark the symbol as undefined, rather than as defined in
1661 the .plt section. Leave the value alone. */
1662 sym
->st_shndx
= SHN_UNDEF
;
1667 if (h
->got
.offset
!= (bfd_vma
) -1)
1671 Elf_Internal_Rela rela
;
1673 /* This symbol has an entry in the global offset table. Set it
1676 srela
= htab
->srelgot
;
1677 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1679 rela
.r_offset
= (sgot
->output_section
->vma
1680 + sgot
->output_offset
1681 + (h
->got
.offset
&~ 1));
1683 /* If this is a -Bsymbolic link, and the symbol is defined
1684 locally, we just want to emit a RELATIVE reloc. Likewise if
1685 the symbol was forced to be local because of a version file.
1686 The entry in the global offset table will already have been
1687 initialized in the relocate_section function. */
1694 rela
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
1695 rela
.r_addend
= (h
->root
.u
.def
.value
1696 + h
->root
.u
.def
.section
->output_section
->vma
1697 + h
->root
.u
.def
.section
->output_offset
);
1701 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
1702 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1703 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_GLOB_DAT
);
1707 loc
= srela
->contents
;
1708 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
1709 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1710 ++srela
->reloc_count
;
1716 Elf_Internal_Rela rela
;
1718 /* This symbols needs a copy reloc. Set it up. */
1719 BFD_ASSERT (h
->dynindx
!= -1
1720 && (h
->root
.type
== bfd_link_hash_defined
1721 || h
->root
.type
== bfd_link_hash_defweak
));
1723 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
1724 BFD_ASSERT (s
!= NULL
);
1726 rela
.r_offset
= (h
->root
.u
.def
.value
1727 + h
->root
.u
.def
.section
->output_section
->vma
1728 + h
->root
.u
.def
.section
->output_offset
);
1729 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_COPY
);
1732 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
1733 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1737 /* Mark some specially defined symbols as absolute. */
1738 if (h
== htab
->root
.hdynamic
|| h
== htab
->root
.hgot
)
1739 sym
->st_shndx
= SHN_ABS
;
1744 static enum elf_reloc_type_class
1745 lm32_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
1747 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1749 case R_LM32_RELATIVE
: return reloc_class_relative
;
1750 case R_LM32_JMP_SLOT
: return reloc_class_plt
;
1751 case R_LM32_COPY
: return reloc_class_copy
;
1752 default: return reloc_class_normal
;
1756 /* Adjust a symbol defined by a dynamic object and referenced by a
1757 regular object. The current definition is in some section of the
1758 dynamic object, but we're not including those sections. We have to
1759 change the definition to something the rest of the link can
1763 lm32_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1764 struct elf_link_hash_entry
*h
)
1766 struct elf_lm32_link_hash_table
*htab
;
1767 struct elf_lm32_link_hash_entry
*eh
;
1768 struct elf_lm32_dyn_relocs
*p
;
1772 dynobj
= elf_hash_table (info
)->dynobj
;
1774 /* Make sure we know what is going on here. */
1775 BFD_ASSERT (dynobj
!= NULL
1777 || h
->u
.weakdef
!= NULL
1780 && !h
->def_regular
)));
1782 /* If this is a function, put it in the procedure linkage table. We
1783 will fill in the contents of the procedure linkage table later,
1784 when we know the address of the .got section. */
1785 if (h
->type
== STT_FUNC
1791 && h
->root
.type
!= bfd_link_hash_undefweak
1792 && h
->root
.type
!= bfd_link_hash_undefined
)
1794 /* This case can occur if we saw a PLT reloc in an input
1795 file, but the symbol was never referred to by a dynamic
1796 object. In such a case, we don't actually need to build
1797 a procedure linkage table, and we can just do a PCREL
1799 h
->plt
.offset
= (bfd_vma
) -1;
1806 h
->plt
.offset
= (bfd_vma
) -1;
1808 /* If this is a weak symbol, and there is a real definition, the
1809 processor independent code will have arranged for us to see the
1810 real definition first, and we can just use the same value. */
1811 if (h
->u
.weakdef
!= NULL
)
1813 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
1814 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
1815 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
1816 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
1820 /* This is a reference to a symbol defined by a dynamic object which
1821 is not a function. */
1823 /* If we are creating a shared library, we must presume that the
1824 only references to the symbol are via the global offset table.
1825 For such cases we need not do anything here; the relocations will
1826 be handled correctly by relocate_section. */
1830 /* If there are no references to this symbol that do not use the
1831 GOT, we don't need to generate a copy reloc. */
1832 if (!h
->non_got_ref
)
1835 /* If -z nocopyreloc was given, we won't generate them either. */
1836 if (info
->nocopyreloc
)
1842 eh
= (struct elf_lm32_link_hash_entry
*) h
;
1843 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1845 s
= p
->sec
->output_section
;
1846 if (s
!= NULL
&& (s
->flags
& (SEC_READONLY
| SEC_HAS_CONTENTS
)) != 0)
1850 /* If we didn't find any dynamic relocs in sections which needs the
1851 copy reloc, then we'll be keeping the dynamic relocs and avoiding
1859 /* We must allocate the symbol in our .dynbss section, which will
1860 become part of the .bss section of the executable. There will be
1861 an entry for this symbol in the .dynsym section. The dynamic
1862 object will contain position independent code, so all references
1863 from the dynamic object to this symbol will go through the global
1864 offset table. The dynamic linker will use the .dynsym entry to
1865 determine the address it must put in the global offset table, so
1866 both the dynamic object and the regular object will refer to the
1867 same memory location for the variable. */
1869 htab
= lm32_elf_hash_table (info
);
1874 BFD_ASSERT (s
!= NULL
);
1876 /* We must generate a R_LM32_COPY reloc to tell the dynamic linker
1877 to copy the initial value out of the dynamic object and into the
1878 runtime process image. We need to remember the offset into the
1879 .rela.bss section we are going to use. */
1880 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1884 srel
= htab
->srelbss
;
1885 BFD_ASSERT (srel
!= NULL
);
1886 srel
->size
+= sizeof (Elf32_External_Rela
);
1890 return _bfd_elf_adjust_dynamic_copy (h
, s
);
1893 /* Allocate space in .plt, .got and associated reloc sections for
1897 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1899 struct bfd_link_info
*info
;
1900 struct elf_lm32_link_hash_table
*htab
;
1901 struct elf_lm32_link_hash_entry
*eh
;
1902 struct elf_lm32_dyn_relocs
*p
;
1904 if (h
->root
.type
== bfd_link_hash_indirect
)
1907 info
= (struct bfd_link_info
*) inf
;
1908 htab
= lm32_elf_hash_table (info
);
1912 eh
= (struct elf_lm32_link_hash_entry
*) h
;
1914 if (htab
->root
.dynamic_sections_created
1915 && h
->plt
.refcount
> 0)
1917 /* Make sure this symbol is output as a dynamic symbol.
1918 Undefined weak syms won't yet be marked as dynamic. */
1919 if (h
->dynindx
== -1
1920 && !h
->forced_local
)
1922 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1926 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
1928 asection
*s
= htab
->splt
;
1930 /* If this is the first .plt entry, make room for the special
1933 s
->size
+= PLT_ENTRY_SIZE
;
1935 h
->plt
.offset
= s
->size
;
1937 /* If this symbol is not defined in a regular file, and we are
1938 not generating a shared library, then set the symbol to this
1939 location in the .plt. This is required to make function
1940 pointers compare as equal between the normal executable and
1941 the shared library. */
1945 h
->root
.u
.def
.section
= s
;
1946 h
->root
.u
.def
.value
= h
->plt
.offset
;
1949 /* Make room for this entry. */
1950 s
->size
+= PLT_ENTRY_SIZE
;
1952 /* We also need to make an entry in the .got.plt section, which
1953 will be placed in the .got section by the linker script. */
1954 htab
->sgotplt
->size
+= 4;
1956 /* We also need to make an entry in the .rel.plt section. */
1957 htab
->srelplt
->size
+= sizeof (Elf32_External_Rela
);
1961 h
->plt
.offset
= (bfd_vma
) -1;
1967 h
->plt
.offset
= (bfd_vma
) -1;
1971 if (h
->got
.refcount
> 0)
1976 /* Make sure this symbol is output as a dynamic symbol.
1977 Undefined weak syms won't yet be marked as dynamic. */
1978 if (h
->dynindx
== -1
1979 && !h
->forced_local
)
1981 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1987 h
->got
.offset
= s
->size
;
1989 dyn
= htab
->root
.dynamic_sections_created
;
1990 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
))
1991 htab
->srelgot
->size
+= sizeof (Elf32_External_Rela
);
1994 h
->got
.offset
= (bfd_vma
) -1;
1996 if (eh
->dyn_relocs
== NULL
)
1999 /* In the shared -Bsymbolic case, discard space allocated for
2000 dynamic pc-relative relocs against symbols which turn out to be
2001 defined in regular objects. For the normal shared case, discard
2002 space for pc-relative relocs that have become local due to symbol
2003 visibility changes. */
2011 struct elf_lm32_dyn_relocs
**pp
;
2013 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2015 p
->count
-= p
->pc_count
;
2024 /* Also discard relocs on undefined weak syms with non-default
2026 if (eh
->dyn_relocs
!= NULL
2027 && h
->root
.type
== bfd_link_hash_undefweak
)
2029 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2030 eh
->dyn_relocs
= NULL
;
2032 /* Make sure undefined weak symbols are output as a dynamic
2034 else if (h
->dynindx
== -1
2035 && !h
->forced_local
)
2037 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2044 /* For the non-shared case, discard space for relocs against
2045 symbols which turn out to need copy relocs or are not
2051 || (htab
->root
.dynamic_sections_created
2052 && (h
->root
.type
== bfd_link_hash_undefweak
2053 || h
->root
.type
== bfd_link_hash_undefined
))))
2055 /* Make sure this symbol is output as a dynamic symbol.
2056 Undefined weak syms won't yet be marked as dynamic. */
2057 if (h
->dynindx
== -1
2058 && !h
->forced_local
)
2060 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2064 /* If that succeeded, we know we'll be keeping all the
2066 if (h
->dynindx
!= -1)
2070 eh
->dyn_relocs
= NULL
;
2075 /* Finally, allocate space. */
2076 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2078 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2079 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2085 /* Find any dynamic relocs that apply to read-only sections. */
2088 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2090 struct elf_lm32_link_hash_entry
*eh
;
2091 struct elf_lm32_dyn_relocs
*p
;
2093 eh
= (struct elf_lm32_link_hash_entry
*) h
;
2094 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2096 asection
*s
= p
->sec
->output_section
;
2098 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2100 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2102 info
->flags
|= DF_TEXTREL
;
2104 /* Not an error, just cut short the traversal. */
2111 /* Set the sizes of the dynamic sections. */
2114 lm32_elf_size_dynamic_sections (bfd
*output_bfd
,
2115 struct bfd_link_info
*info
)
2117 struct elf_lm32_link_hash_table
*htab
;
2123 htab
= lm32_elf_hash_table (info
);
2127 dynobj
= htab
->root
.dynobj
;
2128 BFD_ASSERT (dynobj
!= NULL
);
2130 if (htab
->root
.dynamic_sections_created
)
2132 /* Set the contents of the .interp section to the interpreter. */
2133 if (info
->executable
)
2135 s
= bfd_get_linker_section (dynobj
, ".interp");
2136 BFD_ASSERT (s
!= NULL
);
2137 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2138 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2142 /* Set up .got offsets for local syms, and space for local dynamic
2144 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2146 bfd_signed_vma
*local_got
;
2147 bfd_signed_vma
*end_local_got
;
2148 bfd_size_type locsymcount
;
2149 Elf_Internal_Shdr
*symtab_hdr
;
2152 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2155 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2157 struct elf_lm32_dyn_relocs
*p
;
2159 for (p
= ((struct elf_lm32_dyn_relocs
*)
2160 elf_section_data (s
)->local_dynrel
);
2164 if (! bfd_is_abs_section (p
->sec
)
2165 && bfd_is_abs_section (p
->sec
->output_section
))
2167 /* Input section has been discarded, either because
2168 it is a copy of a linkonce section or due to
2169 linker script /DISCARD/, so we'll be discarding
2172 else if (p
->count
!= 0)
2174 srel
= elf_section_data (p
->sec
)->sreloc
;
2175 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2176 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2177 info
->flags
|= DF_TEXTREL
;
2182 local_got
= elf_local_got_refcounts (ibfd
);
2186 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2187 locsymcount
= symtab_hdr
->sh_info
;
2188 end_local_got
= local_got
+ locsymcount
;
2190 srel
= htab
->srelgot
;
2191 for (; local_got
< end_local_got
; ++local_got
)
2195 *local_got
= s
->size
;
2198 srel
->size
+= sizeof (Elf32_External_Rela
);
2201 *local_got
= (bfd_vma
) -1;
2205 /* Allocate global sym .plt and .got entries, and space for global
2206 sym dynamic relocs. */
2207 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2209 /* We now have determined the sizes of the various dynamic sections.
2210 Allocate memory for them. */
2212 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2214 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2219 || s
== htab
->sgotplt
2220 || s
== htab
->sdynbss
)
2222 /* Strip this section if we don't need it; see the
2225 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2227 if (s
->size
!= 0 && s
!= htab
->srelplt
)
2230 /* We use the reloc_count field as a counter if we need
2231 to copy relocs into the output file. */
2235 /* It's not one of our sections, so don't allocate space. */
2240 /* If we don't need this section, strip it from the
2241 output file. This is mostly to handle .rela.bss and
2242 .rela.plt. We must create both sections in
2243 create_dynamic_sections, because they must be created
2244 before the linker maps input sections to output
2245 sections. The linker does that before
2246 adjust_dynamic_symbol is called, and it is that
2247 function which decides whether anything needs to go
2248 into these sections. */
2249 s
->flags
|= SEC_EXCLUDE
;
2253 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2256 /* Allocate memory for the section contents. We use bfd_zalloc
2257 here in case unused entries are not reclaimed before the
2258 section's contents are written out. This should not happen,
2259 but this way if it does, we get a R_LM32_NONE reloc instead
2261 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2262 if (s
->contents
== NULL
)
2266 if (htab
->root
.dynamic_sections_created
)
2268 /* Add some entries to the .dynamic section. We fill in the
2269 values later, in lm32_elf_finish_dynamic_sections, but we
2270 must add the entries now so that we get the correct size for
2271 the .dynamic section. The DT_DEBUG entry is filled in by the
2272 dynamic linker and used by the debugger. */
2273 #define add_dynamic_entry(TAG, VAL) \
2274 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2276 if (info
->executable
)
2278 if (! add_dynamic_entry (DT_DEBUG
, 0))
2282 if (htab
->splt
->size
!= 0)
2284 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2285 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2286 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2287 || ! add_dynamic_entry (DT_JMPREL
, 0))
2293 if (! add_dynamic_entry (DT_RELA
, 0)
2294 || ! add_dynamic_entry (DT_RELASZ
, 0)
2295 || ! add_dynamic_entry (DT_RELAENT
,
2296 sizeof (Elf32_External_Rela
)))
2299 /* If any dynamic relocs apply to a read-only section,
2300 then we need a DT_TEXTREL entry. */
2301 if ((info
->flags
& DF_TEXTREL
) == 0)
2302 elf_link_hash_traverse (&htab
->root
, readonly_dynrelocs
,
2305 if ((info
->flags
& DF_TEXTREL
) != 0)
2307 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2312 #undef add_dynamic_entry
2314 /* Allocate .rofixup section. */
2315 if (IS_FDPIC (output_bfd
))
2317 struct weak_symbol_list
*list_start
= NULL
, *list_end
= NULL
;
2318 int rgot_weak_count
= 0;
2321 /* Look for deleted sections. */
2322 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
2324 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2328 /* Count relocs that need .rofixup entires. */
2329 Elf_Internal_Rela
*internal_relocs
, *end
;
2330 internal_relocs
= elf_section_data (s
)->relocs
;
2331 if (internal_relocs
== NULL
)
2332 internal_relocs
= (_bfd_elf_link_read_relocs (ibfd
, s
, NULL
, NULL
, FALSE
));
2333 if (internal_relocs
!= NULL
)
2335 end
= internal_relocs
+ s
->reloc_count
;
2336 while (internal_relocs
< end
)
2338 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2339 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
2340 unsigned long r_symndx
;
2341 struct elf_link_hash_entry
*h
;
2343 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2344 sym_hashes
= elf_sym_hashes (ibfd
);
2345 r_symndx
= ELF32_R_SYM (internal_relocs
->r_info
);
2347 if (r_symndx
< symtab_hdr
->sh_info
)
2352 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2353 while (h
->root
.type
== bfd_link_hash_indirect
2354 || h
->root
.type
== bfd_link_hash_warning
)
2355 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2358 /* Don't generate entries for weak symbols. */
2359 if (!h
|| (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
2361 if (!discarded_section (s
) && !((bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
) == 0))
2363 switch (ELF32_R_TYPE (internal_relocs
->r_info
))
2376 struct weak_symbol_list
*current
, *new_entry
;
2377 /* Is this symbol already in the list? */
2378 for (current
= list_start
; current
; current
= current
->next
)
2380 if (!strcmp (current
->name
, h
->root
.root
.string
))
2383 if (!current
&& !discarded_section (s
) && (bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
))
2385 /* Will this have an entry in the GOT. */
2386 if (ELF32_R_TYPE (internal_relocs
->r_info
) == R_LM32_16_GOT
)
2388 /* Create a new entry. */
2389 new_entry
= malloc (sizeof (struct weak_symbol_list
));
2392 new_entry
->name
= h
->root
.root
.string
;
2393 new_entry
->next
= NULL
;
2395 if (list_start
== NULL
)
2397 list_start
= new_entry
;
2398 list_end
= new_entry
;
2402 list_end
->next
= new_entry
;
2403 list_end
= new_entry
;
2405 /* Increase count of undefined weak symbols in the got. */
2421 list_end
= list_start
->next
;
2423 list_start
= list_end
;
2426 /* Size sections. */
2427 lm32fdpic_fixup32_section (info
)->size
= (r32_count
+ (htab
->sgot
->size
/ 4) - rgot_weak_count
+ 1) * 4;
2428 if (lm32fdpic_fixup32_section (info
)->size
== 0)
2429 lm32fdpic_fixup32_section (info
)->flags
|= SEC_EXCLUDE
;
2432 lm32fdpic_fixup32_section (info
)->contents
=
2433 bfd_zalloc (dynobj
, lm32fdpic_fixup32_section (info
)->size
);
2434 if (lm32fdpic_fixup32_section (info
)->contents
== NULL
)
2442 /* Create dynamic sections when linking against a dynamic object. */
2445 lm32_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2447 struct elf_lm32_link_hash_table
*htab
;
2448 flagword flags
, pltflags
;
2450 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2451 int ptralign
= 2; /* 32bit */
2453 htab
= lm32_elf_hash_table (info
);
2457 /* Make sure we have a GOT - For the case where we have a dynamic object
2458 but none of the relocs in check_relocs */
2459 if (! create_got_section (abfd
, info
))
2461 if (IS_FDPIC (abfd
) && (htab
->sfixup32
== NULL
))
2463 if (! create_rofixup_section (abfd
, info
))
2467 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2468 .rel[a].bss sections. */
2469 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2470 | SEC_LINKER_CREATED
);
2473 pltflags
|= SEC_CODE
;
2474 if (bed
->plt_not_loaded
)
2475 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
2476 if (bed
->plt_readonly
)
2477 pltflags
|= SEC_READONLY
;
2479 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
2482 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
2485 if (bed
->want_plt_sym
)
2487 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2489 struct bfd_link_hash_entry
*bh
= NULL
;
2490 struct elf_link_hash_entry
*h
;
2492 if (! (_bfd_generic_link_add_one_symbol
2493 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
2494 (bfd_vma
) 0, NULL
, FALSE
,
2495 get_elf_backend_data (abfd
)->collect
, &bh
)))
2497 h
= (struct elf_link_hash_entry
*) bh
;
2499 h
->type
= STT_OBJECT
;
2500 htab
->root
.hplt
= h
;
2503 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
2507 s
= bfd_make_section_anyway_with_flags (abfd
,
2508 bed
->default_use_rela_p
2509 ? ".rela.plt" : ".rel.plt",
2510 flags
| SEC_READONLY
);
2513 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2516 if (htab
->sgot
== NULL
2517 && ! create_got_section (abfd
, info
))
2520 if (bed
->want_dynbss
)
2522 /* The .dynbss section is a place to put symbols which are defined
2523 by dynamic objects, are referenced by regular objects, and are
2524 not functions. We must allocate space for them in the process
2525 image and use a R_*_COPY reloc to tell the dynamic linker to
2526 initialize them at run time. The linker script puts the .dynbss
2527 section into the .bss section of the final image. */
2528 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
2529 SEC_ALLOC
| SEC_LINKER_CREATED
);
2533 /* The .rel[a].bss section holds copy relocs. This section is not
2534 normally needed. We need to create it here, though, so that the
2535 linker will map it to an output section. We can't just create it
2536 only if we need it, because we will not know whether we need it
2537 until we have seen all the input files, and the first time the
2538 main linker code calls BFD after examining all the input files
2539 (size_dynamic_sections) the input sections have already been
2540 mapped to the output sections. If the section turns out not to
2541 be needed, we can discard it later. We will never need this
2542 section when generating a shared object, since they do not use
2546 s
= bfd_make_section_anyway_with_flags (abfd
,
2547 (bed
->default_use_rela_p
2548 ? ".rela.bss" : ".rel.bss"),
2549 flags
| SEC_READONLY
);
2552 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2560 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2563 lm32_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2564 struct elf_link_hash_entry
*dir
,
2565 struct elf_link_hash_entry
*ind
)
2567 struct elf_lm32_link_hash_entry
* edir
;
2568 struct elf_lm32_link_hash_entry
* eind
;
2570 edir
= (struct elf_lm32_link_hash_entry
*) dir
;
2571 eind
= (struct elf_lm32_link_hash_entry
*) ind
;
2573 if (eind
->dyn_relocs
!= NULL
)
2575 if (edir
->dyn_relocs
!= NULL
)
2577 struct elf_lm32_dyn_relocs
**pp
;
2578 struct elf_lm32_dyn_relocs
*p
;
2580 /* Add reloc counts against the indirect sym to the direct sym
2581 list. Merge any entries against the same section. */
2582 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2584 struct elf_lm32_dyn_relocs
*q
;
2586 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2587 if (q
->sec
== p
->sec
)
2589 q
->pc_count
+= p
->pc_count
;
2590 q
->count
+= p
->count
;
2597 *pp
= edir
->dyn_relocs
;
2600 edir
->dyn_relocs
= eind
->dyn_relocs
;
2601 eind
->dyn_relocs
= NULL
;
2604 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2608 lm32_elf_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
2610 if (!info
->relocatable
)
2612 if (!bfd_elf_stack_segment_size (output_bfd
, info
,
2613 "__stacksize", DEFAULT_STACK_SIZE
))
2616 asection
*sec
= bfd_get_section_by_name (output_bfd
, ".stack");
2618 sec
->size
= info
->stacksize
>= 0 ? info
->stacksize
: 0;
2625 lm32_elf_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2627 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2628 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2631 BFD_ASSERT (!elf_flags_init (obfd
)
2632 || elf_elfheader (obfd
)->e_flags
== elf_elfheader (ibfd
)->e_flags
);
2634 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
2635 elf_flags_init (obfd
) = TRUE
;
2637 /* Copy object attributes. */
2638 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
2645 lm32_elf_fdpic_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2649 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2650 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2653 if (! lm32_elf_copy_private_bfd_data (ibfd
, obfd
))
2656 if (! elf_tdata (ibfd
) || ! elf_tdata (ibfd
)->phdr
2657 || ! elf_tdata (obfd
) || ! elf_tdata (obfd
)->phdr
)
2660 /* Copy the stack size. */
2661 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
2662 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2664 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
2666 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
2667 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2669 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
2671 /* Rewrite the phdrs, since we're only called after they were first written. */
2672 if (bfd_seek (obfd
, (bfd_signed_vma
) get_elf_backend_data (obfd
)
2673 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
2674 || get_elf_backend_data (obfd
)->s
->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
2675 elf_elfheader (obfd
)->e_phnum
) != 0)
2687 #define ELF_ARCH bfd_arch_lm32
2688 #define ELF_TARGET_ID LM32_ELF_DATA
2689 #define ELF_MACHINE_CODE EM_LATTICEMICO32
2690 #define ELF_MAXPAGESIZE 0x1000
2692 #define TARGET_BIG_SYM bfd_elf32_lm32_vec
2693 #define TARGET_BIG_NAME "elf32-lm32"
2695 #define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
2696 #define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
2697 #define elf_info_to_howto lm32_info_to_howto_rela
2698 #define elf_info_to_howto_rel 0
2699 #define elf_backend_rela_normal 1
2700 #define elf_backend_object_p lm32_elf_object_p
2701 #define elf_backend_final_write_processing lm32_elf_final_write_processing
2702 #define elf_backend_stack_align 8
2703 #define elf_backend_can_gc_sections 1
2704 #define elf_backend_can_refcount 1
2705 #define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
2706 #define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook
2707 #define elf_backend_plt_readonly 1
2708 #define elf_backend_want_got_plt 1
2709 #define elf_backend_want_plt_sym 0
2710 #define elf_backend_got_header_size 12
2711 #define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
2712 #define elf_backend_check_relocs lm32_elf_check_relocs
2713 #define elf_backend_reloc_type_class lm32_elf_reloc_type_class
2714 #define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
2715 #define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
2716 #define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2717 #define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
2718 #define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
2719 #define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
2720 #define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
2721 #define elf_backend_relocate_section lm32_elf_relocate_section
2723 #include "elf32-target.h"
2725 #undef ELF_MAXPAGESIZE
2726 #define ELF_MAXPAGESIZE 0x4000
2729 #undef TARGET_BIG_SYM
2730 #define TARGET_BIG_SYM bfd_elf32_lm32fdpic_vec
2731 #undef TARGET_BIG_NAME
2732 #define TARGET_BIG_NAME "elf32-lm32fdpic"
2734 #define elf32_bed elf32_lm32fdpic_bed
2736 #undef elf_backend_always_size_sections
2737 #define elf_backend_always_size_sections lm32_elf_always_size_sections
2738 #undef bfd_elf32_bfd_copy_private_bfd_data
2739 #define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
2741 #include "elf32-target.h"