1 /* Lattice Mico32-specific support for 32-bit ELF
2 Copyright (C) 2008-2018 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 lm32_elf32_fdpic_vec
;
48 #define IS_FDPIC(bfd) ((bfd)->xvec == &lm32_elf32_fdpic_vec)
50 static bfd_reloc_status_type lm32_elf_gprel_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 /* lm32 ELF linker hash entry. */
55 struct elf_lm32_link_hash_entry
57 struct elf_link_hash_entry root
;
59 /* Track dynamic relocs copied for this symbol. */
60 struct elf_dyn_relocs
*dyn_relocs
;
63 /* lm32 ELF linker hash table. */
65 struct elf_lm32_link_hash_table
67 struct elf_link_hash_table root
;
69 /* Short-cuts to get to dynamic linker sections. */
77 /* Get the lm32 ELF linker hash table from a link_info structure. */
79 #define lm32_elf_hash_table(p) \
80 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
81 == LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL)
83 #define lm32fdpic_got_section(info) \
84 (lm32_elf_hash_table (info)->root.sgot)
85 #define lm32fdpic_gotrel_section(info) \
86 (lm32_elf_hash_table (info)->root.srelgot)
87 #define lm32fdpic_fixup32_section(info) \
88 (lm32_elf_hash_table (info)->sfixup32)
90 struct weak_symbol_list
93 struct weak_symbol_list
*next
;
96 /* Create an entry in an lm32 ELF linker hash table. */
98 static struct bfd_hash_entry
*
99 lm32_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
100 struct bfd_hash_table
*table
,
103 struct elf_lm32_link_hash_entry
*ret
=
104 (struct elf_lm32_link_hash_entry
*) entry
;
106 /* Allocate the structure if it has not already been allocated by a
109 ret
= bfd_hash_allocate (table
,
110 sizeof (struct elf_lm32_link_hash_entry
));
114 /* Call the allocation method of the superclass. */
115 ret
= ((struct elf_lm32_link_hash_entry
*)
116 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
120 struct elf_lm32_link_hash_entry
*eh
;
122 eh
= (struct elf_lm32_link_hash_entry
*) ret
;
123 eh
->dyn_relocs
= NULL
;
126 return (struct bfd_hash_entry
*) ret
;
129 /* Create an lm32 ELF linker hash table. */
131 static struct bfd_link_hash_table
*
132 lm32_elf_link_hash_table_create (bfd
*abfd
)
134 struct elf_lm32_link_hash_table
*ret
;
135 bfd_size_type amt
= sizeof (struct elf_lm32_link_hash_table
);
137 ret
= bfd_zmalloc (amt
);
141 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
142 lm32_elf_link_hash_newfunc
,
143 sizeof (struct elf_lm32_link_hash_entry
),
150 return &ret
->root
.root
;
153 /* Add a fixup to the ROFIXUP section. */
156 _lm32fdpic_add_rofixup (bfd
*output_bfd
, asection
*rofixup
, bfd_vma relocation
)
158 bfd_vma fixup_offset
;
160 if (rofixup
->flags
& SEC_EXCLUDE
)
163 fixup_offset
= rofixup
->reloc_count
* 4;
164 if (rofixup
->contents
)
166 BFD_ASSERT (fixup_offset
< rofixup
->size
);
167 if (fixup_offset
< rofixup
->size
)
168 bfd_put_32 (output_bfd
, relocation
, rofixup
->contents
+ fixup_offset
);
170 rofixup
->reloc_count
++;
175 /* Create .rofixup sections in DYNOBJ, and set up
176 shortcuts to them in our hash table. */
179 create_rofixup_section (bfd
*dynobj
, struct bfd_link_info
*info
)
181 struct elf_lm32_link_hash_table
*htab
;
182 htab
= lm32_elf_hash_table (info
);
187 /* Fixup section for R_LM32_32 relocs. */
188 lm32fdpic_fixup32_section (info
)
189 = bfd_make_section_anyway_with_flags (dynobj
,
197 if (lm32fdpic_fixup32_section (info
) == NULL
198 || ! bfd_set_section_alignment (dynobj
,
199 lm32fdpic_fixup32_section (info
), 2))
205 static reloc_howto_type lm32_elf_howto_table
[] =
207 /* This reloc does nothing. */
208 HOWTO (R_LM32_NONE
, /* type */
210 3, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE
, /* pc_relative */
214 complain_overflow_dont
, /* complain_on_overflow */
215 bfd_elf_generic_reloc
, /* special_function */
216 "R_LM32_NONE", /* name */
217 FALSE
, /* partial_inplace */
220 FALSE
), /* pcrel_offset */
222 /* An 8 bit absolute relocation. */
223 HOWTO (R_LM32_8
, /* type */
225 0, /* size (0 = byte, 1 = short, 2 = long) */
227 FALSE
, /* pc_relative */
229 complain_overflow_bitfield
,/* complain_on_overflow */
230 bfd_elf_generic_reloc
, /* special_function */
231 "R_LM32_8", /* name */
232 FALSE
, /* partial_inplace */
235 FALSE
), /* pcrel_offset */
237 /* A 16 bit absolute relocation. */
238 HOWTO (R_LM32_16
, /* type */
240 1, /* size (0 = byte, 1 = short, 2 = long) */
242 FALSE
, /* pc_relative */
244 complain_overflow_bitfield
,/* complain_on_overflow */
245 bfd_elf_generic_reloc
, /* special_function */
246 "R_LM32_16", /* name */
247 FALSE
, /* partial_inplace */
249 0xffff, /* dst_mask */
250 FALSE
), /* pcrel_offset */
252 /* A 32 bit absolute relocation. */
253 HOWTO (R_LM32_32
, /* type */
255 2, /* size (0 = byte, 1 = short, 2 = long) */
257 FALSE
, /* pc_relative */
259 complain_overflow_bitfield
,/* complain_on_overflow */
260 bfd_elf_generic_reloc
, /* special_function */
261 "R_LM32_32", /* name */
262 FALSE
, /* partial_inplace */
264 0xffffffff, /* dst_mask */
265 FALSE
), /* pcrel_offset */
267 HOWTO (R_LM32_HI16
, /* type */
269 2, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE
, /* pc_relative */
273 complain_overflow_bitfield
,/* complain_on_overflow */
274 bfd_elf_generic_reloc
, /* special_function */
275 "R_LM32_HI16", /* name */
276 FALSE
, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE
), /* pcrel_offset */
281 HOWTO (R_LM32_LO16
, /* type */
283 2, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE
, /* pc_relative */
287 complain_overflow_dont
, /* complain_on_overflow */
288 bfd_elf_generic_reloc
, /* special_function */
289 "R_LM32_LO16", /* name */
290 FALSE
, /* partial_inplace */
292 0xffff, /* dst_mask */
293 FALSE
), /* pcrel_offset */
295 HOWTO (R_LM32_GPREL16
, /* type */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE
, /* pc_relative */
301 complain_overflow_dont
, /* complain_on_overflow */
302 lm32_elf_gprel_reloc
, /* special_function */
303 "R_LM32_GPREL16", /* name */
304 FALSE
, /* partial_inplace */
306 0xffff, /* dst_mask */
307 FALSE
), /* pcrel_offset */
309 HOWTO (R_LM32_CALL
, /* type */
311 2, /* size (0 = byte, 1 = short, 2 = long) */
313 TRUE
, /* pc_relative */
315 complain_overflow_signed
, /* complain_on_overflow */
316 bfd_elf_generic_reloc
, /* special_function */
317 "R_LM32_CALL", /* name */
318 FALSE
, /* partial_inplace */
320 0x3ffffff, /* dst_mask */
321 TRUE
), /* pcrel_offset */
323 HOWTO (R_LM32_BRANCH
, /* type */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
327 TRUE
, /* pc_relative */
329 complain_overflow_signed
, /* complain_on_overflow */
330 bfd_elf_generic_reloc
, /* special_function */
331 "R_LM32_BRANCH", /* name */
332 FALSE
, /* partial_inplace */
334 0xffff, /* dst_mask */
335 TRUE
), /* pcrel_offset */
337 /* GNU extension to record C++ vtable hierarchy. */
338 HOWTO (R_LM32_GNU_VTINHERIT
, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE
, /* pc_relative */
344 complain_overflow_dont
, /* complain_on_overflow */
345 NULL
, /* special_function */
346 "R_LM32_GNU_VTINHERIT", /* name */
347 FALSE
, /* partial_inplace */
350 FALSE
), /* pcrel_offset */
352 /* GNU extension to record C++ vtable member usage. */
353 HOWTO (R_LM32_GNU_VTENTRY
, /* type */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
357 FALSE
, /* pc_relative */
359 complain_overflow_dont
, /* complain_on_overflow */
360 _bfd_elf_rel_vtable_reloc_fn
,/* special_function */
361 "R_LM32_GNU_VTENTRY", /* name */
362 FALSE
, /* partial_inplace */
365 FALSE
), /* pcrel_offset */
367 HOWTO (R_LM32_16_GOT
, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE
, /* pc_relative */
373 complain_overflow_signed
, /* complain_on_overflow */
374 bfd_elf_generic_reloc
, /* special_function */
375 "R_LM32_16_GOT", /* name */
376 FALSE
, /* partial_inplace */
378 0xffff, /* dst_mask */
379 FALSE
), /* pcrel_offset */
381 HOWTO (R_LM32_GOTOFF_HI16
, /* type */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
385 FALSE
, /* pc_relative */
387 complain_overflow_dont
, /* complain_on_overflow */
388 bfd_elf_generic_reloc
, /* special_function */
389 "R_LM32_GOTOFF_HI16", /* name */
390 FALSE
, /* partial_inplace */
391 0xffff, /* src_mask */
392 0xffff, /* dst_mask */
393 FALSE
), /* pcrel_offset */
395 HOWTO (R_LM32_GOTOFF_LO16
, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 FALSE
, /* pc_relative */
401 complain_overflow_dont
, /* complain_on_overflow */
402 bfd_elf_generic_reloc
, /* special_function */
403 "R_LM32_GOTOFF_LO16", /* name */
404 FALSE
, /* partial_inplace */
405 0xffff, /* src_mask */
406 0xffff, /* dst_mask */
407 FALSE
), /* pcrel_offset */
409 HOWTO (R_LM32_COPY
, /* type */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE
, /* pc_relative */
415 complain_overflow_bitfield
, /* complain_on_overflow */
416 bfd_elf_generic_reloc
, /* special_function */
417 "R_LM32_COPY", /* name */
418 FALSE
, /* partial_inplace */
419 0xffffffff, /* src_mask */
420 0xffffffff, /* dst_mask */
421 FALSE
), /* pcrel_offset */
423 HOWTO (R_LM32_GLOB_DAT
, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE
, /* pc_relative */
429 complain_overflow_bitfield
, /* complain_on_overflow */
430 bfd_elf_generic_reloc
, /* special_function */
431 "R_LM32_GLOB_DAT", /* name */
432 FALSE
, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE
), /* pcrel_offset */
437 HOWTO (R_LM32_JMP_SLOT
, /* type */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
441 FALSE
, /* pc_relative */
443 complain_overflow_bitfield
, /* complain_on_overflow */
444 bfd_elf_generic_reloc
, /* special_function */
445 "R_LM32_JMP_SLOT", /* name */
446 FALSE
, /* partial_inplace */
447 0xffffffff, /* src_mask */
448 0xffffffff, /* dst_mask */
449 FALSE
), /* pcrel_offset */
451 HOWTO (R_LM32_RELATIVE
, /* type */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
455 FALSE
, /* pc_relative */
457 complain_overflow_bitfield
, /* complain_on_overflow */
458 bfd_elf_generic_reloc
, /* special_function */
459 "R_LM32_RELATIVE", /* name */
460 FALSE
, /* partial_inplace */
461 0xffffffff, /* src_mask */
462 0xffffffff, /* dst_mask */
463 FALSE
), /* pcrel_offset */
467 /* Map BFD reloc types to lm32 ELF reloc types. */
469 struct lm32_reloc_map
471 bfd_reloc_code_real_type bfd_reloc_val
;
472 unsigned char elf_reloc_val
;
475 static const struct lm32_reloc_map lm32_reloc_map
[] =
477 { BFD_RELOC_NONE
, R_LM32_NONE
},
478 { BFD_RELOC_8
, R_LM32_8
},
479 { BFD_RELOC_16
, R_LM32_16
},
480 { BFD_RELOC_32
, R_LM32_32
},
481 { BFD_RELOC_HI16
, R_LM32_HI16
},
482 { BFD_RELOC_LO16
, R_LM32_LO16
},
483 { BFD_RELOC_GPREL16
, R_LM32_GPREL16
},
484 { BFD_RELOC_LM32_CALL
, R_LM32_CALL
},
485 { BFD_RELOC_LM32_BRANCH
, R_LM32_BRANCH
},
486 { BFD_RELOC_VTABLE_INHERIT
, R_LM32_GNU_VTINHERIT
},
487 { BFD_RELOC_VTABLE_ENTRY
, R_LM32_GNU_VTENTRY
},
488 { BFD_RELOC_LM32_16_GOT
, R_LM32_16_GOT
},
489 { BFD_RELOC_LM32_GOTOFF_HI16
, R_LM32_GOTOFF_HI16
},
490 { BFD_RELOC_LM32_GOTOFF_LO16
, R_LM32_GOTOFF_LO16
},
491 { BFD_RELOC_LM32_COPY
, R_LM32_COPY
},
492 { BFD_RELOC_LM32_GLOB_DAT
, R_LM32_GLOB_DAT
},
493 { BFD_RELOC_LM32_JMP_SLOT
, R_LM32_JMP_SLOT
},
494 { BFD_RELOC_LM32_RELATIVE
, R_LM32_RELATIVE
},
497 static reloc_howto_type
*
498 lm32_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
499 bfd_reloc_code_real_type code
)
503 for (i
= 0; i
< sizeof (lm32_reloc_map
) / sizeof (lm32_reloc_map
[0]); i
++)
504 if (lm32_reloc_map
[i
].bfd_reloc_val
== code
)
505 return &lm32_elf_howto_table
[lm32_reloc_map
[i
].elf_reloc_val
];
509 static reloc_howto_type
*
510 lm32_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
516 i
< sizeof (lm32_elf_howto_table
) / sizeof (lm32_elf_howto_table
[0]);
518 if (lm32_elf_howto_table
[i
].name
!= NULL
519 && strcasecmp (lm32_elf_howto_table
[i
].name
, r_name
) == 0)
520 return &lm32_elf_howto_table
[i
];
526 /* Set the howto pointer for an Lattice Mico32 ELF reloc. */
529 lm32_info_to_howto_rela (bfd
*abfd ATTRIBUTE_UNUSED
,
531 Elf_Internal_Rela
*dst
)
535 r_type
= ELF32_R_TYPE (dst
->r_info
);
536 if (r_type
>= (unsigned int) R_LM32_max
)
538 /* xgettext:c-format */
539 _bfd_error_handler (_("%B: invalid LM32 reloc number: %d"), abfd
, r_type
);
542 cache_ptr
->howto
= &lm32_elf_howto_table
[r_type
];
545 /* Set the right machine number for an Lattice Mico32 ELF file. */
548 lm32_elf_object_p (bfd
*abfd
)
550 return bfd_default_set_arch_mach (abfd
, bfd_arch_lm32
, bfd_mach_lm32
);
553 /* Set machine type flags just before file is written out. */
556 lm32_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
558 elf_elfheader (abfd
)->e_machine
= EM_LATTICEMICO32
;
559 elf_elfheader (abfd
)->e_flags
&=~ EF_LM32_MACH
;
560 switch (bfd_get_mach (abfd
))
563 elf_elfheader (abfd
)->e_flags
|= E_LM32_MACH
;
570 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
571 dangerous relocation. */
574 lm32_elf_assign_gp (bfd
*output_bfd
, bfd_vma
*pgp
)
580 /* If we've already figured out what GP will be, just return it. */
581 *pgp
= _bfd_get_gp_value (output_bfd
);
585 count
= bfd_get_symcount (output_bfd
);
586 sym
= bfd_get_outsymbols (output_bfd
);
588 /* The linker script will have created a symbol named `_gp' with the
589 appropriate value. */
594 for (i
= 0; i
< count
; i
++, sym
++)
598 name
= bfd_asymbol_name (*sym
);
599 if (*name
== '_' && strcmp (name
, "_gp") == 0)
601 *pgp
= bfd_asymbol_value (*sym
);
602 _bfd_set_gp_value (output_bfd
, *pgp
);
610 /* Only get the error once. */
612 _bfd_set_gp_value (output_bfd
, *pgp
);
619 /* We have to figure out the gp value, so that we can adjust the
620 symbol value correctly. We look up the symbol _gp in the output
621 BFD. If we can't find it, we're stuck. We cache it in the ELF
622 target data. We don't need to adjust the symbol value for an
623 external symbol if we are producing relocatable output. */
625 static bfd_reloc_status_type
626 lm32_elf_final_gp (bfd
*output_bfd
, asymbol
*symbol
, bfd_boolean relocatable
,
627 char **error_message
, bfd_vma
*pgp
)
629 if (bfd_is_und_section (symbol
->section
) && !relocatable
)
632 return bfd_reloc_undefined
;
635 *pgp
= _bfd_get_gp_value (output_bfd
);
636 if (*pgp
== 0 && (!relocatable
|| (symbol
->flags
& BSF_SECTION_SYM
) != 0))
640 /* Make up a value. */
641 *pgp
= symbol
->section
->output_section
->vma
+ 0x4000;
642 _bfd_set_gp_value (output_bfd
, *pgp
);
644 else if (!lm32_elf_assign_gp (output_bfd
, pgp
))
648 _("global pointer relative relocation when _gp not defined");
649 return bfd_reloc_dangerous
;
656 static bfd_reloc_status_type
657 lm32_elf_do_gprel_relocate (bfd
*abfd
,
658 reloc_howto_type
*howto
,
659 asection
*input_section ATTRIBUTE_UNUSED
,
662 bfd_vma symbol_value
,
665 return _bfd_final_link_relocate (howto
, abfd
, input_section
,
666 data
, offset
, symbol_value
, addend
);
669 static bfd_reloc_status_type
670 lm32_elf_gprel_reloc (bfd
*abfd
,
671 arelent
*reloc_entry
,
674 asection
*input_section
,
680 bfd_reloc_status_type r
;
682 if (output_bfd
!= (bfd
*) NULL
683 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
684 && (!reloc_entry
->howto
->partial_inplace
|| reloc_entry
->addend
== 0))
686 reloc_entry
->address
+= input_section
->output_offset
;
690 if (output_bfd
!= NULL
)
693 relocation
= symbol
->value
694 + symbol
->section
->output_section
->vma
+ symbol
->section
->output_offset
;
697 lm32_elf_final_gp (abfd
, symbol
, FALSE
, msg
, &gp
)) == bfd_reloc_ok
)
699 relocation
= relocation
+ reloc_entry
->addend
- gp
;
700 reloc_entry
->addend
= 0;
701 if ((signed) relocation
< -32768 || (signed) relocation
> 32767)
703 *msg
= _("global pointer relative address out of range");
704 r
= bfd_reloc_outofrange
;
708 r
= lm32_elf_do_gprel_relocate (abfd
, reloc_entry
->howto
,
710 data
, reloc_entry
->address
,
711 relocation
, reloc_entry
->addend
);
718 /* Find the segment number in which OSEC, and output section, is
722 _lm32fdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
724 struct elf_segment_map
*m
;
725 Elf_Internal_Phdr
*p
;
727 /* Find the segment that contains the output_section. */
728 for (m
= elf_seg_map (output_bfd
), p
= elf_tdata (output_bfd
)->phdr
;
734 for (i
= m
->count
- 1; i
>= 0; i
--)
735 if (m
->sections
[i
] == osec
)
742 return p
- elf_tdata (output_bfd
)->phdr
;
745 /* Determine if an output section is read-only. */
747 inline static bfd_boolean
748 _lm32fdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
750 unsigned seg
= _lm32fdpic_osec_to_segment (output_bfd
, osec
);
752 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
755 /* Relocate a section */
758 lm32_elf_relocate_section (bfd
*output_bfd
,
759 struct bfd_link_info
*info
,
761 asection
*input_section
,
763 Elf_Internal_Rela
*relocs
,
764 Elf_Internal_Sym
*local_syms
,
765 asection
**local_sections
)
767 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
768 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
769 Elf_Internal_Rela
*rel
, *relend
;
770 struct elf_lm32_link_hash_table
*htab
= lm32_elf_hash_table (info
);
771 bfd_vma
*local_got_offsets
;
777 local_got_offsets
= elf_local_got_offsets (input_bfd
);
779 sgot
= htab
->root
.sgot
;
781 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
782 sym_hashes
= elf_sym_hashes (input_bfd
);
785 relend
= relocs
+ input_section
->reloc_count
;
786 for (; rel
< relend
; rel
++)
788 reloc_howto_type
*howto
;
790 unsigned long r_symndx
;
791 Elf_Internal_Sym
*sym
;
793 struct elf_link_hash_entry
*h
;
796 bfd_reloc_status_type r
;
797 const char *name
= NULL
;
799 r_symndx
= ELF32_R_SYM (rel
->r_info
);
800 r_type
= ELF32_R_TYPE (rel
->r_info
);
802 if (r_type
== R_LM32_GNU_VTENTRY
803 || r_type
== R_LM32_GNU_VTINHERIT
)
810 howto
= lm32_elf_howto_table
+ r_type
;
812 if (r_symndx
< symtab_hdr
->sh_info
)
814 /* It's a local symbol. */
815 sym
= local_syms
+ r_symndx
;
816 sec
= local_sections
[r_symndx
];
817 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
818 name
= bfd_elf_string_from_elf_section
819 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
820 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
824 /* It's a global symbol. */
825 bfd_boolean unresolved_reloc
;
826 bfd_boolean warned
, ignored
;
828 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
829 r_symndx
, symtab_hdr
, sym_hashes
,
831 unresolved_reloc
, warned
, ignored
);
832 name
= h
->root
.root
.string
;
835 if (sec
!= NULL
&& discarded_section (sec
))
836 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
837 rel
, 1, relend
, howto
, 0, contents
);
839 if (bfd_link_relocatable (info
))
841 /* This is a relocatable link. We don't have to change
842 anything, unless the reloc is against a section symbol,
843 in which case we have to adjust according to where the
844 section symbol winds up in the output section. */
845 if (sym
== NULL
|| ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
848 /* If partial_inplace, we need to store any additional addend
849 back in the section. */
850 if (! howto
->partial_inplace
)
853 /* Shouldn't reach here. */
862 if (!lm32_elf_assign_gp (output_bfd
, &gp
))
863 r
= bfd_reloc_dangerous
;
866 relocation
= relocation
+ rel
->r_addend
- gp
;
868 if ((signed)relocation
< -32768 || (signed)relocation
> 32767)
869 r
= bfd_reloc_outofrange
;
872 r
= _bfd_final_link_relocate (howto
, input_bfd
,
873 input_section
, contents
,
874 rel
->r_offset
, relocation
,
880 /* Relocation is to the entry for this symbol in the global
882 BFD_ASSERT (sgot
!= NULL
);
889 BFD_ASSERT (off
!= (bfd_vma
) -1);
891 dyn
= htab
->root
.dynamic_sections_created
;
892 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
895 || (bfd_link_pic (info
)
901 /* This is actually a static link, or it is a
902 -Bsymbolic link and the symbol is defined
903 locally, or the symbol was forced to be local
904 because of a version file. We must initialize
905 this entry in the global offset table. Since the
906 offset must always be a multiple of 4, we use the
907 least significant bit to record whether we have
908 initialized it already.
910 When doing a dynamic link, we create a .rela.got
911 relocation entry to initialize the value. This
912 is done in the finish_dynamic_symbol routine. */
917 /* Write entry in GOT */
918 bfd_put_32 (output_bfd
, relocation
,
919 sgot
->contents
+ off
);
920 /* Create entry in .rofixup pointing to GOT entry. */
921 if (IS_FDPIC (output_bfd
) && h
->root
.type
!= bfd_link_hash_undefweak
)
923 _lm32fdpic_add_rofixup (output_bfd
,
924 lm32fdpic_fixup32_section
926 sgot
->output_section
->vma
927 + sgot
->output_offset
930 /* Mark GOT entry as having been written. */
935 relocation
= sgot
->output_offset
+ off
;
942 BFD_ASSERT (local_got_offsets
!= NULL
943 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
945 /* Get offset into GOT table. */
946 off
= local_got_offsets
[r_symndx
];
948 /* The offset must always be a multiple of 4. We use
949 the least significant bit to record whether we have
950 already processed this entry. */
955 /* Write entry in GOT. */
956 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
957 /* Create entry in .rofixup pointing to GOT entry. */
958 if (IS_FDPIC (output_bfd
))
960 _lm32fdpic_add_rofixup (output_bfd
,
961 lm32fdpic_fixup32_section
963 sgot
->output_section
->vma
964 + sgot
->output_offset
968 if (bfd_link_pic (info
))
971 Elf_Internal_Rela outrel
;
973 /* We need to generate a R_LM32_RELATIVE reloc
974 for the dynamic linker. */
975 srelgot
= htab
->root
.srelgot
;
976 BFD_ASSERT (srelgot
!= NULL
);
978 outrel
.r_offset
= (sgot
->output_section
->vma
979 + sgot
->output_offset
981 outrel
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
982 outrel
.r_addend
= relocation
;
983 loc
= srelgot
->contents
;
984 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
985 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
986 ++srelgot
->reloc_count
;
989 local_got_offsets
[r_symndx
] |= 1;
993 relocation
= sgot
->output_offset
+ off
;
996 /* Addend should be zero. */
997 if (rel
->r_addend
!= 0)
998 _bfd_error_handler (_("internal error: addend should be zero for R_LM32_16_GOT"));
1000 r
= _bfd_final_link_relocate (howto
,
1009 case R_LM32_GOTOFF_LO16
:
1010 case R_LM32_GOTOFF_HI16
:
1011 /* Relocation is offset from GOT. */
1012 BFD_ASSERT (sgot
!= NULL
);
1013 relocation
-= sgot
->output_section
->vma
;
1014 /* Account for sign-extension. */
1015 if ((r_type
== R_LM32_GOTOFF_HI16
)
1016 && ((relocation
+ rel
->r_addend
) & 0x8000))
1017 rel
->r_addend
+= 0x10000;
1018 r
= _bfd_final_link_relocate (howto
,
1028 if (IS_FDPIC (output_bfd
))
1030 if ((!h
) || (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
1032 /* Only create .rofixup entries for relocs in loadable sections. */
1033 if ((bfd_get_section_flags (output_bfd
, input_section
->output_section
)
1034 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
1037 /* Check address to be modified is writable. */
1038 if (_lm32fdpic_osec_readonly_p (output_bfd
,
1042 info
->callbacks
->warning
1044 _("cannot emit dynamic relocations in read-only section"),
1045 name
, input_bfd
, input_section
, rel
->r_offset
);
1048 /* Create entry in .rofixup section. */
1049 _lm32fdpic_add_rofixup (output_bfd
,
1050 lm32fdpic_fixup32_section (info
),
1051 input_section
->output_section
->vma
1052 + input_section
->output_offset
1060 r
= _bfd_final_link_relocate (howto
,
1071 if (r
!= bfd_reloc_ok
)
1073 const char *msg
= NULL
;
1076 lm32_info_to_howto_rela (input_bfd
, &bfd_reloc
, rel
);
1077 howto
= bfd_reloc
.howto
;
1080 name
= h
->root
.root
.string
;
1083 name
= (bfd_elf_string_from_elf_section
1084 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
1085 if (name
== NULL
|| *name
== '\0')
1086 name
= bfd_section_name (input_bfd
, sec
);
1091 case bfd_reloc_overflow
:
1093 && (h
->root
.type
== bfd_link_hash_undefweak
))
1095 (*info
->callbacks
->reloc_overflow
)
1096 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1097 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
1100 case bfd_reloc_undefined
:
1101 (*info
->callbacks
->undefined_symbol
)
1102 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
1105 case bfd_reloc_outofrange
:
1106 msg
= _("internal error: out of range error");
1109 case bfd_reloc_notsupported
:
1110 msg
= _("internal error: unsupported relocation error");
1113 case bfd_reloc_dangerous
:
1114 msg
= _("internal error: dangerous error");
1118 msg
= _("internal error: unknown error");
1122 (*info
->callbacks
->warning
) (info
, msg
, name
, input_bfd
,
1123 input_section
, rel
->r_offset
);
1133 lm32_elf_gc_mark_hook (asection
*sec
,
1134 struct bfd_link_info
*info
,
1135 Elf_Internal_Rela
*rel
,
1136 struct elf_link_hash_entry
*h
,
1137 Elf_Internal_Sym
*sym
)
1140 switch (ELF32_R_TYPE (rel
->r_info
))
1142 case R_LM32_GNU_VTINHERIT
:
1143 case R_LM32_GNU_VTENTRY
:
1147 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1150 /* Look through the relocs for a section during the first phase. */
1153 lm32_elf_check_relocs (bfd
*abfd
,
1154 struct bfd_link_info
*info
,
1156 const Elf_Internal_Rela
*relocs
)
1158 Elf_Internal_Shdr
*symtab_hdr
;
1159 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
1160 const Elf_Internal_Rela
*rel
;
1161 const Elf_Internal_Rela
*rel_end
;
1162 struct elf_lm32_link_hash_table
*htab
;
1165 if (bfd_link_relocatable (info
))
1168 /* Don't do anything special with non-loaded, non-alloced sections.
1169 In particular, any relocs in such sections should not affect GOT
1170 and PLT reference counting (ie. we don't allow them to create GOT
1171 or PLT entries), there's no possibility or desire to optimize TLS
1172 relocs, and there's not much point in propagating relocs to shared
1173 libs that the dynamic linker won't relocate. */
1174 if ((sec
->flags
& SEC_ALLOC
) == 0)
1177 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1178 sym_hashes
= elf_sym_hashes (abfd
);
1179 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof (Elf32_External_Sym
);
1180 if (!elf_bad_symtab (abfd
))
1181 sym_hashes_end
-= symtab_hdr
->sh_info
;
1183 htab
= lm32_elf_hash_table (info
);
1187 dynobj
= htab
->root
.dynobj
;
1189 rel_end
= relocs
+ sec
->reloc_count
;
1190 for (rel
= relocs
; rel
< rel_end
; rel
++)
1193 struct elf_link_hash_entry
*h
;
1194 unsigned long r_symndx
;
1196 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1197 r_type
= ELF32_R_TYPE (rel
->r_info
);
1198 if (r_symndx
< symtab_hdr
->sh_info
)
1202 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1203 while (h
->root
.type
== bfd_link_hash_indirect
1204 || h
->root
.type
== bfd_link_hash_warning
)
1205 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1208 /* Some relocs require a global offset table. */
1209 if (htab
->root
.sgot
== NULL
)
1214 case R_LM32_GOTOFF_HI16
:
1215 case R_LM32_GOTOFF_LO16
:
1217 htab
->root
.dynobj
= dynobj
= abfd
;
1218 if (!_bfd_elf_create_got_section (dynobj
, info
))
1224 /* Some relocs require a rofixup table. */
1225 if (IS_FDPIC (abfd
))
1230 /* FDPIC requires a GOT if there is a .rofixup section
1231 (Normal ELF doesn't). */
1233 htab
->root
.dynobj
= dynobj
= abfd
;
1234 if (!_bfd_elf_create_got_section (dynobj
, info
))
1236 /* Create .rofixup section */
1237 if (htab
->sfixup32
== NULL
)
1239 if (! create_rofixup_section (dynobj
, info
))
1244 case R_LM32_GOTOFF_HI16
:
1245 case R_LM32_GOTOFF_LO16
:
1246 /* Create .rofixup section. */
1247 if (htab
->sfixup32
== NULL
)
1250 htab
->root
.dynobj
= dynobj
= abfd
;
1251 if (! create_rofixup_section (dynobj
, info
))
1262 h
->got
.refcount
+= 1;
1265 bfd_signed_vma
*local_got_refcounts
;
1267 /* This is a global offset table entry for a local symbol. */
1268 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1269 if (local_got_refcounts
== NULL
)
1273 size
= symtab_hdr
->sh_info
;
1274 size
*= sizeof (bfd_signed_vma
);
1275 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1276 if (local_got_refcounts
== NULL
)
1278 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1280 local_got_refcounts
[r_symndx
] += 1;
1284 /* This relocation describes the C++ object vtable hierarchy.
1285 Reconstruct it for later use during GC. */
1286 case R_LM32_GNU_VTINHERIT
:
1287 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1291 /* This relocation describes which C++ vtable entries are actually
1292 used. Record for later use during GC. */
1293 case R_LM32_GNU_VTENTRY
:
1294 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1304 /* Finish up the dynamic sections. */
1307 lm32_elf_finish_dynamic_sections (bfd
*output_bfd
,
1308 struct bfd_link_info
*info
)
1310 struct elf_lm32_link_hash_table
*htab
;
1315 htab
= lm32_elf_hash_table (info
);
1319 dynobj
= htab
->root
.dynobj
;
1321 sgot
= htab
->root
.sgotplt
;
1322 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
1324 if (htab
->root
.dynamic_sections_created
)
1327 Elf32_External_Dyn
*dyncon
, *dynconend
;
1329 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
1331 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1332 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
1334 for (; dyncon
< dynconend
; dyncon
++)
1336 Elf_Internal_Dyn dyn
;
1339 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1347 s
= htab
->root
.sgotplt
;
1350 s
= htab
->root
.srelplt
;
1352 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
1353 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1357 s
= htab
->root
.srelplt
;
1358 dyn
.d_un
.d_val
= s
->size
;
1359 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1364 /* Fill in the first entry in the procedure linkage table. */
1365 splt
= htab
->root
.splt
;
1366 if (splt
&& splt
->size
> 0)
1368 if (bfd_link_pic (info
))
1370 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
, splt
->contents
);
1371 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
, splt
->contents
+ 4);
1372 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
, splt
->contents
+ 8);
1373 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
, splt
->contents
+ 12);
1374 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
, splt
->contents
+ 16);
1379 /* addr = .got + 4 */
1380 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
1381 bfd_put_32 (output_bfd
,
1382 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
1384 bfd_put_32 (output_bfd
,
1385 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
1386 splt
->contents
+ 4);
1387 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
1388 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
1389 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
1392 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
1397 /* Fill in the first three entries in the global offset table. */
1398 if (sgot
&& sgot
->size
> 0)
1401 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1403 bfd_put_32 (output_bfd
,
1404 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1406 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
1407 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
1409 /* FIXME: This can be null if create_dynamic_sections wasn't called. */
1410 if (elf_section_data (sgot
->output_section
) != NULL
)
1411 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1414 if (lm32fdpic_fixup32_section (info
))
1416 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
1417 bfd_vma got_value
= hgot
->root
.u
.def
.value
1418 + hgot
->root
.u
.def
.section
->output_section
->vma
1419 + hgot
->root
.u
.def
.section
->output_offset
;
1420 struct bfd_link_hash_entry
*hend
;
1422 /* Last entry is pointer to GOT. */
1423 _lm32fdpic_add_rofixup (output_bfd
, lm32fdpic_fixup32_section (info
), got_value
);
1425 /* Check we wrote enough entries. */
1426 if (lm32fdpic_fixup32_section (info
)->size
1427 != (lm32fdpic_fixup32_section (info
)->reloc_count
* 4))
1430 ("LINKER BUG: .rofixup section size mismatch: size/4 %Ld != relocs %d",
1431 lm32fdpic_fixup32_section (info
)->size
/4,
1432 lm32fdpic_fixup32_section (info
)->reloc_count
);
1436 hend
= bfd_link_hash_lookup (info
->hash
, "__ROFIXUP_END__",
1437 FALSE
, FALSE
, TRUE
);
1439 && (hend
->type
== bfd_link_hash_defined
1440 || hend
->type
== bfd_link_hash_defweak
))
1443 lm32fdpic_fixup32_section (info
)->output_section
->vma
1444 + lm32fdpic_fixup32_section (info
)->output_offset
1445 + lm32fdpic_fixup32_section (info
)->size
1446 - hend
->u
.def
.section
->output_section
->vma
1447 - hend
->u
.def
.section
->output_offset
;
1448 BFD_ASSERT (hend
->u
.def
.value
== value
);
1449 if (hend
->u
.def
.value
!= value
)
1452 ("LINKER BUG: .rofixup section hend->u.def.value != value: %Ld != %Ld", hend
->u
.def
.value
, value
);
1461 /* Finish up dynamic symbol handling. We set the contents of various
1462 dynamic sections here. */
1465 lm32_elf_finish_dynamic_symbol (bfd
*output_bfd
,
1466 struct bfd_link_info
*info
,
1467 struct elf_link_hash_entry
*h
,
1468 Elf_Internal_Sym
*sym
)
1470 struct elf_lm32_link_hash_table
*htab
;
1473 htab
= lm32_elf_hash_table (info
);
1477 if (h
->plt
.offset
!= (bfd_vma
) -1)
1485 Elf_Internal_Rela rela
;
1487 /* This symbol has an entry in the procedure linkage table. Set
1489 BFD_ASSERT (h
->dynindx
!= -1);
1491 splt
= htab
->root
.splt
;
1492 sgot
= htab
->root
.sgotplt
;
1493 srela
= htab
->root
.srelplt
;
1494 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1496 /* Get the index in the procedure linkage table which
1497 corresponds to this symbol. This is the index of this symbol
1498 in all the symbols for which we are making plt entries. The
1499 first entry in the procedure linkage table is reserved. */
1500 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1502 /* Get the offset into the .got table of the entry that
1503 corresponds to this function. Each .got entry is 4 bytes.
1504 The first three are reserved. */
1505 got_offset
= (plt_index
+ 3) * 4;
1507 /* Fill in the entry in the procedure linkage table. */
1508 if (! bfd_link_pic (info
))
1517 /* Fill in the entry in the global offset table. */
1518 bfd_put_32 (output_bfd
,
1519 (splt
->output_section
->vma
1520 + splt
->output_offset
1522 + 12), /* same offset */
1523 sgot
->contents
+ got_offset
);
1525 /* Fill in the entry in the .rela.plt section. */
1526 rela
.r_offset
= (sgot
->output_section
->vma
1527 + sgot
->output_offset
1529 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_JMP_SLOT
);
1531 loc
= srela
->contents
;
1532 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
1533 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1535 if (!h
->def_regular
)
1537 /* Mark the symbol as undefined, rather than as defined in
1538 the .plt section. Leave the value alone. */
1539 sym
->st_shndx
= SHN_UNDEF
;
1544 if (h
->got
.offset
!= (bfd_vma
) -1)
1548 Elf_Internal_Rela rela
;
1550 /* This symbol has an entry in the global offset table. Set it
1552 sgot
= htab
->root
.sgot
;
1553 srela
= htab
->root
.srelgot
;
1554 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1556 rela
.r_offset
= (sgot
->output_section
->vma
1557 + sgot
->output_offset
1558 + (h
->got
.offset
&~ 1));
1560 /* If this is a -Bsymbolic link, and the symbol is defined
1561 locally, we just want to emit a RELATIVE reloc. Likewise if
1562 the symbol was forced to be local because of a version file.
1563 The entry in the global offset table will already have been
1564 initialized in the relocate_section function. */
1565 if (bfd_link_pic (info
)
1571 rela
.r_info
= ELF32_R_INFO (0, R_LM32_RELATIVE
);
1572 rela
.r_addend
= (h
->root
.u
.def
.value
1573 + h
->root
.u
.def
.section
->output_section
->vma
1574 + h
->root
.u
.def
.section
->output_offset
);
1578 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
1579 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1580 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_GLOB_DAT
);
1584 loc
= srela
->contents
;
1585 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
1586 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1587 ++srela
->reloc_count
;
1593 Elf_Internal_Rela rela
;
1595 /* This symbols needs a copy reloc. Set it up. */
1596 BFD_ASSERT (h
->dynindx
!= -1
1597 && (h
->root
.type
== bfd_link_hash_defined
1598 || h
->root
.type
== bfd_link_hash_defweak
));
1600 s
= bfd_get_linker_section (htab
->root
.dynobj
, ".rela.bss");
1601 BFD_ASSERT (s
!= NULL
);
1603 rela
.r_offset
= (h
->root
.u
.def
.value
1604 + h
->root
.u
.def
.section
->output_section
->vma
1605 + h
->root
.u
.def
.section
->output_offset
);
1606 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_LM32_COPY
);
1609 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
1610 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1614 /* Mark some specially defined symbols as absolute. */
1615 if (h
== htab
->root
.hdynamic
|| h
== htab
->root
.hgot
)
1616 sym
->st_shndx
= SHN_ABS
;
1621 static enum elf_reloc_type_class
1622 lm32_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1623 const asection
*rel_sec ATTRIBUTE_UNUSED
,
1624 const Elf_Internal_Rela
*rela
)
1626 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1628 case R_LM32_RELATIVE
: return reloc_class_relative
;
1629 case R_LM32_JMP_SLOT
: return reloc_class_plt
;
1630 case R_LM32_COPY
: return reloc_class_copy
;
1631 default: return reloc_class_normal
;
1635 /* Find dynamic relocs for H that apply to read-only sections. */
1638 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
1640 struct elf_dyn_relocs
*p
;
1641 struct elf_lm32_link_hash_entry
*eh
= (struct elf_lm32_link_hash_entry
*) h
;
1643 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1645 asection
*s
= p
->sec
->output_section
;
1647 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1653 /* Adjust a symbol defined by a dynamic object and referenced by a
1654 regular object. The current definition is in some section of the
1655 dynamic object, but we're not including those sections. We have to
1656 change the definition to something the rest of the link can
1660 lm32_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1661 struct elf_link_hash_entry
*h
)
1663 struct elf_lm32_link_hash_table
*htab
;
1667 dynobj
= elf_hash_table (info
)->dynobj
;
1669 /* Make sure we know what is going on here. */
1670 BFD_ASSERT (dynobj
!= NULL
1675 && !h
->def_regular
)));
1677 /* If this is a function, put it in the procedure linkage table. We
1678 will fill in the contents of the procedure linkage table later,
1679 when we know the address of the .got section. */
1680 if (h
->type
== STT_FUNC
1683 if (! bfd_link_pic (info
)
1686 && h
->root
.type
!= bfd_link_hash_undefweak
1687 && h
->root
.type
!= bfd_link_hash_undefined
)
1689 /* This case can occur if we saw a PLT reloc in an input
1690 file, but the symbol was never referred to by a dynamic
1691 object. In such a case, we don't actually need to build
1692 a procedure linkage table, and we can just do a PCREL
1694 h
->plt
.offset
= (bfd_vma
) -1;
1701 h
->plt
.offset
= (bfd_vma
) -1;
1703 /* If this is a weak symbol, and there is a real definition, the
1704 processor independent code will have arranged for us to see the
1705 real definition first, and we can just use the same value. */
1706 if (h
->is_weakalias
)
1708 struct elf_link_hash_entry
*def
= weakdef (h
);
1709 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1710 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1711 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1715 /* This is a reference to a symbol defined by a dynamic object which
1716 is not a function. */
1718 /* If we are creating a shared library, we must presume that the
1719 only references to the symbol are via the global offset table.
1720 For such cases we need not do anything here; the relocations will
1721 be handled correctly by relocate_section. */
1722 if (bfd_link_pic (info
))
1725 /* If there are no references to this symbol that do not use the
1726 GOT, we don't need to generate a copy reloc. */
1727 if (!h
->non_got_ref
)
1730 /* If -z nocopyreloc was given, we won't generate them either. */
1731 if (0 && info
->nocopyreloc
)
1737 /* If we don't find any dynamic relocs in read-only sections, then
1738 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1739 if (0 && !readonly_dynrelocs (h
))
1745 /* We must allocate the symbol in our .dynbss section, which will
1746 become part of the .bss section of the executable. There will be
1747 an entry for this symbol in the .dynsym section. The dynamic
1748 object will contain position independent code, so all references
1749 from the dynamic object to this symbol will go through the global
1750 offset table. The dynamic linker will use the .dynsym entry to
1751 determine the address it must put in the global offset table, so
1752 both the dynamic object and the regular object will refer to the
1753 same memory location for the variable. */
1755 htab
= lm32_elf_hash_table (info
);
1760 BFD_ASSERT (s
!= NULL
);
1762 /* We must generate a R_LM32_COPY reloc to tell the dynamic linker
1763 to copy the initial value out of the dynamic object and into the
1764 runtime process image. We need to remember the offset into the
1765 .rela.bss section we are going to use. */
1766 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
1770 srel
= htab
->srelbss
;
1771 BFD_ASSERT (srel
!= NULL
);
1772 srel
->size
+= sizeof (Elf32_External_Rela
);
1776 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1779 /* Allocate space in .plt, .got and associated reloc sections for
1783 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
1785 struct bfd_link_info
*info
;
1786 struct elf_lm32_link_hash_table
*htab
;
1787 struct elf_lm32_link_hash_entry
*eh
;
1788 struct elf_dyn_relocs
*p
;
1790 if (h
->root
.type
== bfd_link_hash_indirect
)
1793 info
= (struct bfd_link_info
*) inf
;
1794 htab
= lm32_elf_hash_table (info
);
1798 eh
= (struct elf_lm32_link_hash_entry
*) h
;
1800 if (htab
->root
.dynamic_sections_created
1801 && h
->plt
.refcount
> 0)
1803 /* Make sure this symbol is output as a dynamic symbol.
1804 Undefined weak syms won't yet be marked as dynamic. */
1805 if (h
->dynindx
== -1
1806 && !h
->forced_local
)
1808 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1812 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
1814 asection
*s
= htab
->root
.splt
;
1816 /* If this is the first .plt entry, make room for the special
1819 s
->size
+= PLT_ENTRY_SIZE
;
1821 h
->plt
.offset
= s
->size
;
1823 /* If this symbol is not defined in a regular file, and we are
1824 not generating a shared library, then set the symbol to this
1825 location in the .plt. This is required to make function
1826 pointers compare as equal between the normal executable and
1827 the shared library. */
1828 if (! bfd_link_pic (info
)
1831 h
->root
.u
.def
.section
= s
;
1832 h
->root
.u
.def
.value
= h
->plt
.offset
;
1835 /* Make room for this entry. */
1836 s
->size
+= PLT_ENTRY_SIZE
;
1838 /* We also need to make an entry in the .got.plt section, which
1839 will be placed in the .got section by the linker script. */
1840 htab
->root
.sgotplt
->size
+= 4;
1842 /* We also need to make an entry in the .rel.plt section. */
1843 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1847 h
->plt
.offset
= (bfd_vma
) -1;
1853 h
->plt
.offset
= (bfd_vma
) -1;
1857 if (h
->got
.refcount
> 0)
1862 /* Make sure this symbol is output as a dynamic symbol.
1863 Undefined weak syms won't yet be marked as dynamic. */
1864 if (h
->dynindx
== -1
1865 && !h
->forced_local
)
1867 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1871 s
= htab
->root
.sgot
;
1873 h
->got
.offset
= s
->size
;
1875 dyn
= htab
->root
.dynamic_sections_created
;
1876 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
1877 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1880 h
->got
.offset
= (bfd_vma
) -1;
1882 if (eh
->dyn_relocs
== NULL
)
1885 /* In the shared -Bsymbolic case, discard space allocated for
1886 dynamic pc-relative relocs against symbols which turn out to be
1887 defined in regular objects. For the normal shared case, discard
1888 space for pc-relative relocs that have become local due to symbol
1889 visibility changes. */
1891 if (bfd_link_pic (info
))
1897 struct elf_dyn_relocs
**pp
;
1899 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
1901 p
->count
-= p
->pc_count
;
1910 /* Also discard relocs on undefined weak syms with non-default
1912 if (eh
->dyn_relocs
!= NULL
1913 && h
->root
.type
== bfd_link_hash_undefweak
)
1915 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
1916 eh
->dyn_relocs
= NULL
;
1918 /* Make sure undefined weak symbols are output as a dynamic
1920 else if (h
->dynindx
== -1
1921 && !h
->forced_local
)
1923 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1930 /* For the non-shared case, discard space for relocs against
1931 symbols which turn out to need copy relocs or are not
1937 || (htab
->root
.dynamic_sections_created
1938 && (h
->root
.type
== bfd_link_hash_undefweak
1939 || h
->root
.type
== bfd_link_hash_undefined
))))
1941 /* Make sure this symbol is output as a dynamic symbol.
1942 Undefined weak syms won't yet be marked as dynamic. */
1943 if (h
->dynindx
== -1
1944 && !h
->forced_local
)
1946 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1950 /* If that succeeded, we know we'll be keeping all the
1952 if (h
->dynindx
!= -1)
1956 eh
->dyn_relocs
= NULL
;
1961 /* Finally, allocate space. */
1962 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1964 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
1965 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
1971 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
1972 read-only sections. */
1975 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
1979 if (h
->root
.type
== bfd_link_hash_indirect
)
1982 sec
= readonly_dynrelocs (h
);
1985 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
1987 info
->flags
|= DF_TEXTREL
;
1988 info
->callbacks
->minfo
1989 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
1990 sec
->owner
, h
->root
.root
.string
, sec
);
1992 /* Not an error, just cut short the traversal. */
1998 /* Set the sizes of the dynamic sections. */
2001 lm32_elf_size_dynamic_sections (bfd
*output_bfd
,
2002 struct bfd_link_info
*info
)
2004 struct elf_lm32_link_hash_table
*htab
;
2010 htab
= lm32_elf_hash_table (info
);
2014 dynobj
= htab
->root
.dynobj
;
2015 BFD_ASSERT (dynobj
!= NULL
);
2017 if (htab
->root
.dynamic_sections_created
)
2019 /* Set the contents of the .interp section to the interpreter. */
2020 if (bfd_link_executable (info
) && !info
->nointerp
)
2022 s
= bfd_get_linker_section (dynobj
, ".interp");
2023 BFD_ASSERT (s
!= NULL
);
2024 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2025 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2029 /* Set up .got offsets for local syms, and space for local dynamic
2031 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2033 bfd_signed_vma
*local_got
;
2034 bfd_signed_vma
*end_local_got
;
2035 bfd_size_type locsymcount
;
2036 Elf_Internal_Shdr
*symtab_hdr
;
2039 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2042 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2044 struct elf_dyn_relocs
*p
;
2046 for (p
= ((struct elf_dyn_relocs
*)
2047 elf_section_data (s
)->local_dynrel
);
2051 if (! bfd_is_abs_section (p
->sec
)
2052 && bfd_is_abs_section (p
->sec
->output_section
))
2054 /* Input section has been discarded, either because
2055 it is a copy of a linkonce section or due to
2056 linker script /DISCARD/, so we'll be discarding
2059 else if (p
->count
!= 0)
2061 srel
= elf_section_data (p
->sec
)->sreloc
;
2062 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2063 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2064 info
->flags
|= DF_TEXTREL
;
2069 local_got
= elf_local_got_refcounts (ibfd
);
2073 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2074 locsymcount
= symtab_hdr
->sh_info
;
2075 end_local_got
= local_got
+ locsymcount
;
2076 s
= htab
->root
.sgot
;
2077 srel
= htab
->root
.srelgot
;
2078 for (; local_got
< end_local_got
; ++local_got
)
2082 *local_got
= s
->size
;
2084 if (bfd_link_pic (info
))
2085 srel
->size
+= sizeof (Elf32_External_Rela
);
2088 *local_got
= (bfd_vma
) -1;
2092 /* Allocate global sym .plt and .got entries, and space for global
2093 sym dynamic relocs. */
2094 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2096 /* We now have determined the sizes of the various dynamic sections.
2097 Allocate memory for them. */
2099 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2101 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2104 if (s
== htab
->root
.splt
2105 || s
== htab
->root
.sgot
2106 || s
== htab
->root
.sgotplt
2107 || s
== htab
->sdynbss
)
2109 /* Strip this section if we don't need it; see the
2112 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2114 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2117 /* We use the reloc_count field as a counter if we need
2118 to copy relocs into the output file. */
2122 /* It's not one of our sections, so don't allocate space. */
2127 /* If we don't need this section, strip it from the
2128 output file. This is mostly to handle .rela.bss and
2129 .rela.plt. We must create both sections in
2130 create_dynamic_sections, because they must be created
2131 before the linker maps input sections to output
2132 sections. The linker does that before
2133 adjust_dynamic_symbol is called, and it is that
2134 function which decides whether anything needs to go
2135 into these sections. */
2136 s
->flags
|= SEC_EXCLUDE
;
2140 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2143 /* Allocate memory for the section contents. We use bfd_zalloc
2144 here in case unused entries are not reclaimed before the
2145 section's contents are written out. This should not happen,
2146 but this way if it does, we get a R_LM32_NONE reloc instead
2148 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2149 if (s
->contents
== NULL
)
2153 if (htab
->root
.dynamic_sections_created
)
2155 /* Add some entries to the .dynamic section. We fill in the
2156 values later, in lm32_elf_finish_dynamic_sections, but we
2157 must add the entries now so that we get the correct size for
2158 the .dynamic section. The DT_DEBUG entry is filled in by the
2159 dynamic linker and used by the debugger. */
2160 #define add_dynamic_entry(TAG, VAL) \
2161 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2163 if (bfd_link_executable (info
))
2165 if (! add_dynamic_entry (DT_DEBUG
, 0))
2169 if (htab
->root
.splt
->size
!= 0)
2171 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2172 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2173 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2174 || ! add_dynamic_entry (DT_JMPREL
, 0))
2180 if (! add_dynamic_entry (DT_RELA
, 0)
2181 || ! add_dynamic_entry (DT_RELASZ
, 0)
2182 || ! add_dynamic_entry (DT_RELAENT
,
2183 sizeof (Elf32_External_Rela
)))
2186 /* If any dynamic relocs apply to a read-only section,
2187 then we need a DT_TEXTREL entry. */
2188 if ((info
->flags
& DF_TEXTREL
) == 0)
2189 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
2191 if ((info
->flags
& DF_TEXTREL
) != 0)
2193 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2198 #undef add_dynamic_entry
2200 /* Allocate .rofixup section. */
2201 if (IS_FDPIC (output_bfd
))
2203 struct weak_symbol_list
*list_start
= NULL
, *list_end
= NULL
;
2204 int rgot_weak_count
= 0;
2207 /* Look for deleted sections. */
2208 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2210 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2214 /* Count relocs that need .rofixup entires. */
2215 Elf_Internal_Rela
*internal_relocs
, *end
;
2216 internal_relocs
= elf_section_data (s
)->relocs
;
2217 if (internal_relocs
== NULL
)
2218 internal_relocs
= (_bfd_elf_link_read_relocs (ibfd
, s
, NULL
, NULL
, FALSE
));
2219 if (internal_relocs
!= NULL
)
2221 end
= internal_relocs
+ s
->reloc_count
;
2222 while (internal_relocs
< end
)
2224 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2225 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
2226 unsigned long r_symndx
;
2227 struct elf_link_hash_entry
*h
;
2229 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2230 sym_hashes
= elf_sym_hashes (ibfd
);
2231 r_symndx
= ELF32_R_SYM (internal_relocs
->r_info
);
2233 if (r_symndx
< symtab_hdr
->sh_info
)
2238 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2239 while (h
->root
.type
== bfd_link_hash_indirect
2240 || h
->root
.type
== bfd_link_hash_warning
)
2241 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2244 /* Don't generate entries for weak symbols. */
2245 if (!h
|| (h
&& h
->root
.type
!= bfd_link_hash_undefweak
))
2247 if (!discarded_section (s
) && !((bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
) == 0))
2249 switch (ELF32_R_TYPE (internal_relocs
->r_info
))
2262 struct weak_symbol_list
*current
, *new_entry
;
2263 /* Is this symbol already in the list? */
2264 for (current
= list_start
; current
; current
= current
->next
)
2266 if (!strcmp (current
->name
, h
->root
.root
.string
))
2269 if (!current
&& !discarded_section (s
) && (bfd_get_section_flags (ibfd
, s
) & SEC_ALLOC
))
2271 /* Will this have an entry in the GOT. */
2272 if (ELF32_R_TYPE (internal_relocs
->r_info
) == R_LM32_16_GOT
)
2274 /* Create a new entry. */
2275 new_entry
= malloc (sizeof (struct weak_symbol_list
));
2278 new_entry
->name
= h
->root
.root
.string
;
2279 new_entry
->next
= NULL
;
2281 if (list_start
== NULL
)
2283 list_start
= new_entry
;
2284 list_end
= new_entry
;
2288 list_end
->next
= new_entry
;
2289 list_end
= new_entry
;
2291 /* Increase count of undefined weak symbols in the got. */
2307 list_end
= list_start
->next
;
2309 list_start
= list_end
;
2312 /* Size sections. */
2313 lm32fdpic_fixup32_section (info
)->size
2314 = (r32_count
+ (htab
->root
.sgot
->size
/ 4) - rgot_weak_count
+ 1) * 4;
2315 if (lm32fdpic_fixup32_section (info
)->size
== 0)
2316 lm32fdpic_fixup32_section (info
)->flags
|= SEC_EXCLUDE
;
2319 lm32fdpic_fixup32_section (info
)->contents
=
2320 bfd_zalloc (dynobj
, lm32fdpic_fixup32_section (info
)->size
);
2321 if (lm32fdpic_fixup32_section (info
)->contents
== NULL
)
2329 /* Create dynamic sections when linking against a dynamic object. */
2332 lm32_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2334 struct elf_lm32_link_hash_table
*htab
;
2335 flagword flags
, pltflags
;
2337 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2338 int ptralign
= 2; /* 32bit */
2340 htab
= lm32_elf_hash_table (info
);
2344 /* Make sure we have a GOT - For the case where we have a dynamic object
2345 but none of the relocs in check_relocs */
2346 if (!_bfd_elf_create_got_section (abfd
, info
))
2348 if (IS_FDPIC (abfd
) && (htab
->sfixup32
== NULL
))
2350 if (! create_rofixup_section (abfd
, info
))
2354 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2355 .rel[a].bss sections. */
2356 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2357 | SEC_LINKER_CREATED
);
2360 pltflags
|= SEC_CODE
;
2361 if (bed
->plt_not_loaded
)
2362 pltflags
&= ~ (SEC_LOAD
| SEC_HAS_CONTENTS
);
2363 if (bed
->plt_readonly
)
2364 pltflags
|= SEC_READONLY
;
2366 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
2367 htab
->root
.splt
= s
;
2369 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
2372 if (bed
->want_plt_sym
)
2374 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2376 struct bfd_link_hash_entry
*bh
= NULL
;
2377 struct elf_link_hash_entry
*h
;
2379 if (! (_bfd_generic_link_add_one_symbol
2380 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
2381 (bfd_vma
) 0, NULL
, FALSE
,
2382 get_elf_backend_data (abfd
)->collect
, &bh
)))
2384 h
= (struct elf_link_hash_entry
*) bh
;
2386 h
->type
= STT_OBJECT
;
2387 htab
->root
.hplt
= h
;
2389 if (bfd_link_pic (info
)
2390 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
2394 s
= bfd_make_section_anyway_with_flags (abfd
,
2395 bed
->default_use_rela_p
2396 ? ".rela.plt" : ".rel.plt",
2397 flags
| SEC_READONLY
);
2398 htab
->root
.srelplt
= s
;
2400 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2403 if (htab
->root
.sgot
== NULL
2404 && !_bfd_elf_create_got_section (abfd
, info
))
2407 if (bed
->want_dynbss
)
2409 /* The .dynbss section is a place to put symbols which are defined
2410 by dynamic objects, are referenced by regular objects, and are
2411 not functions. We must allocate space for them in the process
2412 image and use a R_*_COPY reloc to tell the dynamic linker to
2413 initialize them at run time. The linker script puts the .dynbss
2414 section into the .bss section of the final image. */
2415 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
2416 SEC_ALLOC
| SEC_LINKER_CREATED
);
2420 /* The .rel[a].bss section holds copy relocs. This section is not
2421 normally needed. We need to create it here, though, so that the
2422 linker will map it to an output section. We can't just create it
2423 only if we need it, because we will not know whether we need it
2424 until we have seen all the input files, and the first time the
2425 main linker code calls BFD after examining all the input files
2426 (size_dynamic_sections) the input sections have already been
2427 mapped to the output sections. If the section turns out not to
2428 be needed, we can discard it later. We will never need this
2429 section when generating a shared object, since they do not use
2431 if (! bfd_link_pic (info
))
2433 s
= bfd_make_section_anyway_with_flags (abfd
,
2434 (bed
->default_use_rela_p
2435 ? ".rela.bss" : ".rel.bss"),
2436 flags
| SEC_READONLY
);
2439 || ! bfd_set_section_alignment (abfd
, s
, ptralign
))
2447 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2450 lm32_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2451 struct elf_link_hash_entry
*dir
,
2452 struct elf_link_hash_entry
*ind
)
2454 struct elf_lm32_link_hash_entry
* edir
;
2455 struct elf_lm32_link_hash_entry
* eind
;
2457 edir
= (struct elf_lm32_link_hash_entry
*) dir
;
2458 eind
= (struct elf_lm32_link_hash_entry
*) ind
;
2460 if (eind
->dyn_relocs
!= NULL
)
2462 if (edir
->dyn_relocs
!= NULL
)
2464 struct elf_dyn_relocs
**pp
;
2465 struct elf_dyn_relocs
*p
;
2467 /* Add reloc counts against the indirect sym to the direct sym
2468 list. Merge any entries against the same section. */
2469 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2471 struct elf_dyn_relocs
*q
;
2473 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2474 if (q
->sec
== p
->sec
)
2476 q
->pc_count
+= p
->pc_count
;
2477 q
->count
+= p
->count
;
2484 *pp
= edir
->dyn_relocs
;
2487 edir
->dyn_relocs
= eind
->dyn_relocs
;
2488 eind
->dyn_relocs
= NULL
;
2491 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2495 lm32_elf_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
2497 if (!bfd_link_relocatable (info
))
2499 if (!bfd_elf_stack_segment_size (output_bfd
, info
,
2500 "__stacksize", DEFAULT_STACK_SIZE
))
2503 asection
*sec
= bfd_get_section_by_name (output_bfd
, ".stack");
2505 sec
->size
= info
->stacksize
>= 0 ? info
->stacksize
: 0;
2512 lm32_elf_fdpic_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2516 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2517 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2520 if (! _bfd_elf_copy_private_bfd_data (ibfd
, obfd
))
2523 if (! elf_tdata (ibfd
) || ! elf_tdata (ibfd
)->phdr
2524 || ! elf_tdata (obfd
) || ! elf_tdata (obfd
)->phdr
)
2527 /* Copy the stack size. */
2528 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
2529 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2531 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
2533 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
2534 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
2536 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
2538 /* Rewrite the phdrs, since we're only called after they were first written. */
2539 if (bfd_seek (obfd
, (bfd_signed_vma
) get_elf_backend_data (obfd
)
2540 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
2541 || get_elf_backend_data (obfd
)->s
->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
2542 elf_elfheader (obfd
)->e_phnum
) != 0)
2554 #define ELF_ARCH bfd_arch_lm32
2555 #define ELF_TARGET_ID LM32_ELF_DATA
2556 #define ELF_MACHINE_CODE EM_LATTICEMICO32
2557 #define ELF_MAXPAGESIZE 0x1000
2559 #define TARGET_BIG_SYM lm32_elf32_vec
2560 #define TARGET_BIG_NAME "elf32-lm32"
2562 #define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup
2563 #define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup
2564 #define elf_info_to_howto lm32_info_to_howto_rela
2565 #define elf_info_to_howto_rel 0
2566 #define elf_backend_rela_normal 1
2567 #define elf_backend_object_p lm32_elf_object_p
2568 #define elf_backend_final_write_processing lm32_elf_final_write_processing
2569 #define elf_backend_stack_align 8
2570 #define elf_backend_can_gc_sections 1
2571 #define elf_backend_can_refcount 1
2572 #define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook
2573 #define elf_backend_plt_readonly 1
2574 #define elf_backend_want_got_plt 1
2575 #define elf_backend_want_plt_sym 0
2576 #define elf_backend_got_header_size 12
2577 #define elf_backend_dtrel_excludes_plt 1
2578 #define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create
2579 #define elf_backend_check_relocs lm32_elf_check_relocs
2580 #define elf_backend_reloc_type_class lm32_elf_reloc_type_class
2581 #define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol
2582 #define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections
2583 #define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
2584 #define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections
2585 #define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections
2586 #define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol
2587 #define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol
2588 #define elf_backend_relocate_section lm32_elf_relocate_section
2590 #include "elf32-target.h"
2592 #undef ELF_MAXPAGESIZE
2593 #define ELF_MAXPAGESIZE 0x4000
2596 #undef TARGET_BIG_SYM
2597 #define TARGET_BIG_SYM lm32_elf32_fdpic_vec
2598 #undef TARGET_BIG_NAME
2599 #define TARGET_BIG_NAME "elf32-lm32fdpic"
2601 #define elf32_bed elf32_lm32fdpic_bed
2603 #undef elf_backend_always_size_sections
2604 #define elf_backend_always_size_sections lm32_elf_always_size_sections
2605 #undef bfd_elf32_bfd_copy_private_bfd_data
2606 #define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data
2608 #include "elf32-target.h"