1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001 Free Software Foundation, Inc.
3 Contributed by Axis Communications AB.
4 Written by Hans-Peter Nilsson, based on elf32-fr30.c
5 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
29 /* Forward declarations. */
30 static reloc_howto_type
* cris_reloc_type_lookup
31 PARAMS ((bfd
*abfd
, bfd_reloc_code_real_type code
));
33 static void cris_info_to_howto_rela
34 PARAMS ((bfd
*, arelent
*, Elf32_Internal_Rela
*));
36 static boolean cris_elf_relocate_section
37 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
38 Elf_Internal_Rela
*, Elf_Internal_Sym
*, asection
**));
40 static bfd_reloc_status_type cris_final_link_relocate
41 PARAMS ((reloc_howto_type
*, bfd
*, asection
*, bfd_byte
*,
42 Elf_Internal_Rela
*, bfd_vma
));
44 static boolean cris_elf_gc_sweep_hook
45 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
46 const Elf_Internal_Rela
*));
48 static asection
* cris_elf_gc_mark_hook
49 PARAMS ((bfd
*, struct bfd_link_info
*, Elf_Internal_Rela
*,
50 struct elf_link_hash_entry
*, Elf_Internal_Sym
*));
52 static boolean cris_elf_object_p
PARAMS ((bfd
*));
54 static void cris_elf_final_write_processing
PARAMS ((bfd
*, boolean
));
56 static boolean cris_elf_print_private_bfd_data
PARAMS ((bfd
*, PTR
));
58 static boolean cris_elf_merge_private_bfd_data
PARAMS ((bfd
*, bfd
*));
60 struct elf_cris_link_hash_entry
;
61 static boolean elf_cris_discard_excess_dso_dynamics
62 PARAMS ((struct elf_cris_link_hash_entry
*, PTR
));
63 static boolean elf_cris_discard_excess_program_dynamics
64 PARAMS ((struct elf_cris_link_hash_entry
*, PTR
));
65 static boolean elf_cris_adjust_gotplt_to_got
66 PARAMS ((struct elf_cris_link_hash_entry
*, PTR
));
67 static boolean elf_cris_try_fold_plt_to_got
68 PARAMS ((struct elf_cris_link_hash_entry
*, PTR
));
69 static struct bfd_hash_entry
*elf_cris_link_hash_newfunc
70 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
71 static struct bfd_link_hash_table
*elf_cris_link_hash_table_create
73 static boolean elf_cris_adjust_dynamic_symbol
74 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
75 static boolean cris_elf_check_relocs
76 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*,
77 const Elf_Internal_Rela
*));
79 static boolean elf_cris_size_dynamic_sections
80 PARAMS ((bfd
*, struct bfd_link_info
*));
81 static boolean elf_cris_finish_dynamic_symbol
82 PARAMS ((bfd
*, struct bfd_link_info
*, struct elf_link_hash_entry
*,
84 static boolean elf_cris_finish_dynamic_sections
85 PARAMS ((bfd
*, struct bfd_link_info
*));
86 static void elf_cris_hide_symbol
87 PARAMS ((struct bfd_link_info
*, struct elf_link_hash_entry
*));
88 static enum elf_reloc_type_class elf_cris_reloc_type_class
91 static reloc_howto_type cris_elf_howto_table
[] =
93 /* This reloc does nothing. */
94 HOWTO (R_CRIS_NONE
, /* type */
96 2, /* size (0 = byte, 1 = short, 2 = long) */
98 false, /* pc_relative */
100 complain_overflow_bitfield
, /* complain_on_overflow */
101 bfd_elf_generic_reloc
, /* special_function */
102 "R_CRIS_NONE", /* name */
103 false, /* partial_inplace */
106 false), /* pcrel_offset */
108 /* An 8 bit absolute relocation. */
109 HOWTO (R_CRIS_8
, /* type */
111 0, /* size (0 = byte, 1 = short, 2 = long) */
113 false, /* pc_relative */
115 complain_overflow_bitfield
, /* complain_on_overflow */
116 bfd_elf_generic_reloc
, /* special_function */
117 "R_CRIS_8", /* name */
118 false, /* partial_inplace */
119 0x0000, /* src_mask */
120 0x00ff, /* dst_mask */
121 false), /* pcrel_offset */
123 /* A 16 bit absolute relocation. */
124 HOWTO (R_CRIS_16
, /* type */
126 1, /* size (0 = byte, 1 = short, 2 = long) */
128 false, /* pc_relative */
130 complain_overflow_bitfield
, /* complain_on_overflow */
131 bfd_elf_generic_reloc
, /* special_function */
132 "R_CRIS_16", /* name */
133 false, /* partial_inplace */
134 0x00000000, /* src_mask */
135 0x0000ffff, /* dst_mask */
136 false), /* pcrel_offset */
138 /* A 32 bit absolute relocation. */
139 HOWTO (R_CRIS_32
, /* type */
141 2, /* size (0 = byte, 1 = short, 2 = long) */
143 false, /* pc_relative */
145 complain_overflow_bitfield
, /* complain_on_overflow */
146 bfd_elf_generic_reloc
, /* special_function */
147 "R_CRIS_32", /* name */
148 false, /* partial_inplace */
149 0x00000000, /* src_mask */
150 0xffffffff, /* dst_mask */
151 false), /* pcrel_offset */
153 /* An 8 bit PC-relative relocation. */
154 HOWTO (R_CRIS_8_PCREL
, /* type */
156 0, /* size (0 = byte, 1 = short, 2 = long) */
158 true, /* pc_relative */
160 complain_overflow_bitfield
, /* complain_on_overflow */
161 bfd_elf_generic_reloc
, /* special_function */
162 "R_CRIS_8_PCREL", /* name */
163 false, /* partial_inplace */
164 0x0000, /* src_mask */
165 0x00ff, /* dst_mask */
166 true), /* pcrel_offset */
168 /* A 16 bit PC-relative relocation. */
169 HOWTO (R_CRIS_16_PCREL
, /* type */
171 1, /* size (0 = byte, 1 = short, 2 = long) */
173 true, /* pc_relative */
175 complain_overflow_bitfield
, /* complain_on_overflow */
176 bfd_elf_generic_reloc
, /* special_function */
177 "R_CRIS_16", /* name */
178 false, /* partial_inplace */
179 0x00000000, /* src_mask */
180 0x0000ffff, /* dst_mask */
181 true), /* pcrel_offset */
183 /* A 32 bit PC-relative relocation. */
184 HOWTO (R_CRIS_32_PCREL
, /* type */
186 2, /* size (0 = byte, 1 = short, 2 = long) */
188 true, /* pc_relative */
190 complain_overflow_bitfield
, /* complain_on_overflow */
191 bfd_elf_generic_reloc
, /* special_function */
192 "R_CRIS_32", /* name */
193 false, /* partial_inplace */
194 0x00000000, /* src_mask */
195 0xffffffff, /* dst_mask */
196 true), /* pcrel_offset */
198 /* GNU extension to record C++ vtable hierarchy. */
199 HOWTO (R_CRIS_GNU_VTINHERIT
, /* type */
201 2, /* size (0 = byte, 1 = short, 2 = long) */
203 false, /* pc_relative */
205 complain_overflow_dont
, /* complain_on_overflow */
206 NULL
, /* special_function */
207 "R_CRIS_GNU_VTINHERIT", /* name */
208 false, /* partial_inplace */
211 false), /* pcrel_offset */
213 /* GNU extension to record C++ vtable member usage. */
214 HOWTO (R_CRIS_GNU_VTENTRY
, /* type */
216 2, /* size (0 = byte, 1 = short, 2 = long) */
218 false, /* pc_relative */
220 complain_overflow_dont
, /* complain_on_overflow */
221 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
222 "R_CRIS_GNU_VTENTRY", /* name */
223 false, /* partial_inplace */
226 false), /* pcrel_offset */
228 /* This is used only by the dynamic linker. The symbol should exist
229 both in the object being run and in some shared library. The
230 dynamic linker copies the data addressed by the symbol from the
231 shared library into the object, because the object being
232 run has to have the data at some particular address. */
233 HOWTO (R_CRIS_COPY
, /* type */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
237 false, /* pc_relative */
239 complain_overflow_bitfield
, /* complain_on_overflow */
240 bfd_elf_generic_reloc
, /* special_function */
241 "R_CRIS_COPY", /* name */
242 false, /* partial_inplace */
245 false), /* pcrel_offset */
247 /* Like R_CRIS_32, but used when setting global offset table entries. */
248 HOWTO (R_CRIS_GLOB_DAT
, /* type */
250 2, /* size (0 = byte, 1 = short, 2 = long) */
252 false, /* pc_relative */
254 complain_overflow_bitfield
, /* complain_on_overflow */
255 bfd_elf_generic_reloc
, /* special_function */
256 "R_CRIS_GLOB_DAT", /* name */
257 false, /* partial_inplace */
259 0xffffffff, /* dst_mask */
260 false), /* pcrel_offset */
262 /* Marks a procedure linkage table entry for a symbol. */
263 HOWTO (R_CRIS_JUMP_SLOT
, /* 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_CRIS_JUMP_SLOT", /* name */
272 false, /* partial_inplace */
275 false), /* pcrel_offset */
277 /* Used only by the dynamic linker. When the object is run, this
278 longword is set to the load address of the object, plus the
280 HOWTO (R_CRIS_RELATIVE
, /* type */
282 2, /* size (0 = byte, 1 = short, 2 = long) */
284 false, /* pc_relative */
286 complain_overflow_bitfield
, /* complain_on_overflow */
287 bfd_elf_generic_reloc
, /* special_function */
288 "R_CRIS_RELATIVE", /* name */
289 false, /* partial_inplace */
291 0xffffffff, /* dst_mask */
292 false), /* pcrel_offset */
294 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
295 HOWTO (R_CRIS_16_GOT
, /* type */
297 1, /* size (0 = byte, 1 = short, 2 = long) */
299 false, /* pc_relative */
301 complain_overflow_bitfield
, /* complain_on_overflow */
302 bfd_elf_generic_reloc
, /* special_function */
303 "R_CRIS_16_GOT", /* name */
304 false, /* partial_inplace */
306 0xffff, /* dst_mask */
307 false), /* pcrel_offset */
309 HOWTO (R_CRIS_32_GOT
, /* type */
311 2, /* size (0 = byte, 1 = short, 2 = long) */
313 false, /* pc_relative */
315 complain_overflow_bitfield
, /* complain_on_overflow */
316 bfd_elf_generic_reloc
, /* special_function */
317 "R_CRIS_32_GOT", /* name */
318 false, /* partial_inplace */
320 0xffffffff, /* dst_mask */
321 false), /* pcrel_offset */
323 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
324 the GOT table for the symbol. */
325 HOWTO (R_CRIS_16_GOTPLT
, /* type */
327 1, /* size (0 = byte, 1 = short, 2 = long) */
329 false, /* pc_relative */
331 complain_overflow_bitfield
, /* complain_on_overflow */
332 bfd_elf_generic_reloc
, /* special_function */
333 "R_CRIS_16_GOTPLT", /* name */
334 false, /* partial_inplace */
336 0xffff, /* dst_mask */
337 false), /* pcrel_offset */
339 HOWTO (R_CRIS_32_GOTPLT
, /* type */
341 2, /* size (0 = byte, 1 = short, 2 = long) */
343 false, /* pc_relative */
345 complain_overflow_bitfield
, /* complain_on_overflow */
346 bfd_elf_generic_reloc
, /* special_function */
347 "R_CRIS_32_GOTPLT", /* name */
348 false, /* partial_inplace */
350 0xffffffff, /* dst_mask */
351 false), /* pcrel_offset */
353 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
355 HOWTO (R_CRIS_32_GOTREL
, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 false, /* pc_relative */
361 complain_overflow_bitfield
, /* complain_on_overflow */
362 bfd_elf_generic_reloc
, /* special_function */
363 "R_CRIS_32_GOTREL", /* name */
364 false, /* partial_inplace */
366 0xffffffff, /* dst_mask */
367 false), /* pcrel_offset */
369 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
370 to create PLT entry for symbol. */
371 HOWTO (R_CRIS_32_PLT_GOTREL
, /* type */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
375 false, /* pc_relative */
377 complain_overflow_bitfield
, /* complain_on_overflow */
378 bfd_elf_generic_reloc
, /* special_function */
379 "R_CRIS_32_PLT_GOTREL", /* name */
380 false, /* partial_inplace */
382 0xffffffff, /* dst_mask */
383 false), /* pcrel_offset */
385 /* A 32-bit offset from PC (location after the relocation) + addend to
386 entry for this symbol in PLT and request to create PLT entry for
388 HOWTO (R_CRIS_32_PLT_PCREL
, /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 true, /* pc_relative */
394 complain_overflow_bitfield
, /* complain_on_overflow */
395 bfd_elf_generic_reloc
, /* special_function */
396 "R_CRIS_32_PLT_PCREL", /* name */
397 false, /* partial_inplace */
399 0xffffffff, /* dst_mask */
400 true) /* pcrel_offset */
403 /* Map BFD reloc types to CRIS ELF reloc types. */
405 struct cris_reloc_map
407 bfd_reloc_code_real_type bfd_reloc_val
;
408 unsigned int cris_reloc_val
;
411 static const struct cris_reloc_map cris_reloc_map
[] =
413 { BFD_RELOC_NONE
, R_CRIS_NONE
},
414 { BFD_RELOC_8
, R_CRIS_8
},
415 { BFD_RELOC_16
, R_CRIS_16
},
416 { BFD_RELOC_32
, R_CRIS_32
},
417 { BFD_RELOC_8_PCREL
, R_CRIS_8_PCREL
},
418 { BFD_RELOC_16_PCREL
, R_CRIS_16_PCREL
},
419 { BFD_RELOC_32_PCREL
, R_CRIS_32_PCREL
},
420 { BFD_RELOC_VTABLE_INHERIT
, R_CRIS_GNU_VTINHERIT
},
421 { BFD_RELOC_VTABLE_ENTRY
, R_CRIS_GNU_VTENTRY
},
422 { BFD_RELOC_CRIS_COPY
, R_CRIS_COPY
},
423 { BFD_RELOC_CRIS_GLOB_DAT
, R_CRIS_GLOB_DAT
},
424 { BFD_RELOC_CRIS_JUMP_SLOT
, R_CRIS_JUMP_SLOT
},
425 { BFD_RELOC_CRIS_RELATIVE
, R_CRIS_RELATIVE
},
426 { BFD_RELOC_CRIS_16_GOT
, R_CRIS_16_GOT
},
427 { BFD_RELOC_CRIS_32_GOT
, R_CRIS_32_GOT
},
428 { BFD_RELOC_CRIS_16_GOTPLT
, R_CRIS_16_GOTPLT
},
429 { BFD_RELOC_CRIS_32_GOTPLT
, R_CRIS_32_GOTPLT
},
430 { BFD_RELOC_CRIS_32_GOTREL
, R_CRIS_32_GOTREL
},
431 { BFD_RELOC_CRIS_32_PLT_GOTREL
, R_CRIS_32_PLT_GOTREL
},
432 { BFD_RELOC_CRIS_32_PLT_PCREL
, R_CRIS_32_PLT_PCREL
}
435 static reloc_howto_type
*
436 cris_reloc_type_lookup (abfd
, code
)
437 bfd
* abfd ATTRIBUTE_UNUSED
;
438 bfd_reloc_code_real_type code
;
442 for (i
= sizeof (cris_reloc_map
) / sizeof (cris_reloc_map
[0]);
444 if (cris_reloc_map
[i
].bfd_reloc_val
== code
)
445 return & cris_elf_howto_table
[cris_reloc_map
[i
].cris_reloc_val
];
450 /* Set the howto pointer for an CRIS ELF reloc. */
453 cris_info_to_howto_rela (abfd
, cache_ptr
, dst
)
454 bfd
* abfd ATTRIBUTE_UNUSED
;
456 Elf32_Internal_Rela
* dst
;
460 r_type
= ELF32_R_TYPE (dst
->r_info
);
461 BFD_ASSERT (r_type
< (unsigned int) R_CRIS_max
);
462 cache_ptr
->howto
= & cris_elf_howto_table
[r_type
];
465 /* The name of the dynamic interpreter. This is put in the .interp
468 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
470 /* The size in bytes of an entry in the procedure linkage table. */
472 #define PLT_ENTRY_SIZE 20
474 /* The first entry in an absolute procedure linkage table looks like this. */
476 static const bfd_byte elf_cris_plt0_entry
[PLT_ENTRY_SIZE
] =
479 0x7e, 0x7e, /* push mof. */
480 0x7f, 0x0d, /* (dip [pc+]) */
481 0, 0, 0, 0, /* Replaced with address of .got + 4. */
482 0x30, 0x7a, /* move [...],mof */
483 0x7f, 0x0d, /* (dip [pc+]) */
484 0, 0, 0, 0, /* Replaced with address of .got + 8. */
485 0x30, 0x09, /* jump [...] */
488 /* Subsequent entries in an absolute procedure linkage table look like
491 static const bfd_byte elf_cris_plt_entry
[PLT_ENTRY_SIZE
] =
493 0x7f, 0x0d, /* (dip [pc+]) */
494 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
495 0x30, 0x09, /* jump [...] */
496 0x3f, 0x7e, /* move [pc+],mof */
497 0, 0, 0, 0, /* Replaced with offset into relocation table. */
498 0x2f, 0xfe, /* add.d [pc+],pc */
500 0xff, 0xff /* Replaced with offset to start of .plt. */
503 /* The first entry in a PIC procedure linkage table looks like this. */
505 static const bfd_byte elf_cris_pic_plt0_entry
[PLT_ENTRY_SIZE
] =
507 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
508 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
509 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
510 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
513 /* Subsequent entries in a PIC procedure linkage table look like this. */
515 static const bfd_byte elf_cris_pic_plt_entry
[PLT_ENTRY_SIZE
] =
517 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
518 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
519 0x30, 0x09, /* jump [...] */
520 0x3f, 0x7e, /* move [pc+],mof */
521 0, 0, 0, 0, /* Replaced with offset into relocation table. */
522 0x2f, 0xfe, /* add.d [pc+],pc */
523 0xec, 0xff, /* Replaced with offset to start of .plt. */
527 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
528 (and most other PIC/shlib stuff). Check that we don't drift away
531 The CRIS linker, like the m68k and i386 linkers (and probably the rest
532 too) needs to keep track of the number of relocs that it decides to
533 copy in check_relocs for each symbol. This is so that it can discard
534 PC relative relocs if it doesn't need them when linking with
535 -Bsymbolic. We store the information in a field extending the regular
536 ELF linker hash table. */
538 /* This structure keeps track of the number of PC relative relocs we have
539 copied for a given symbol. */
541 struct elf_cris_pcrel_relocs_copied
544 struct elf_cris_pcrel_relocs_copied
*next
;
545 /* A section in dynobj. */
547 /* Number of relocs copied in this section. */
551 /* CRIS ELF linker hash entry. */
553 struct elf_cris_link_hash_entry
555 struct elf_link_hash_entry root
;
557 /* Number of PC relative relocs copied for this symbol. */
558 struct elf_cris_pcrel_relocs_copied
*pcrel_relocs_copied
;
560 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
561 both a general GOT and a PLT-specific GOT entry for the same symbol,
562 when it is referenced both as a function and as a function pointer.
564 Number of GOTPLT references for a function. */
565 bfd_signed_vma gotplt_refcount
;
567 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
568 (zero is never used as an index). FIXME: We should be able to fold
569 this with gotplt_refcount in a union, like the got and plt unions in
570 elf_link_hash_entry. */
571 bfd_size_type gotplt_offset
;
574 /* CRIS ELF linker hash table. */
576 struct elf_cris_link_hash_table
578 struct elf_link_hash_table root
;
580 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
581 since we try and avoid creating GOTPLT:s when there's already a GOT.
582 Instead, we keep and update the next available index here. */
583 bfd_size_type next_gotplt_entry
;
586 /* Traverse a CRIS ELF linker hash table. */
588 #define elf_cris_link_hash_traverse(table, func, info) \
589 (elf_link_hash_traverse \
591 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
594 /* Get the CRIS ELF linker hash table from a link_info structure. */
596 #define elf_cris_hash_table(p) \
597 ((struct elf_cris_link_hash_table *) (p)->hash)
599 /* Create an entry in a CRIS ELF linker hash table. */
601 static struct bfd_hash_entry
*
602 elf_cris_link_hash_newfunc (entry
, table
, string
)
603 struct bfd_hash_entry
*entry
;
604 struct bfd_hash_table
*table
;
607 struct elf_cris_link_hash_entry
*ret
=
608 (struct elf_cris_link_hash_entry
*) entry
;
610 /* Allocate the structure if it has not already been allocated by a
612 if (ret
== (struct elf_cris_link_hash_entry
*) NULL
)
613 ret
= ((struct elf_cris_link_hash_entry
*)
614 bfd_hash_allocate (table
,
615 sizeof (struct elf_cris_link_hash_entry
)));
616 if (ret
== (struct elf_cris_link_hash_entry
*) NULL
)
617 return (struct bfd_hash_entry
*) ret
;
619 /* Call the allocation method of the superclass. */
620 ret
= ((struct elf_cris_link_hash_entry
*)
621 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
623 if (ret
!= (struct elf_cris_link_hash_entry
*) NULL
)
625 ret
->pcrel_relocs_copied
= NULL
;
626 ret
->gotplt_refcount
= 0;
627 ret
->gotplt_offset
= 0;
630 return (struct bfd_hash_entry
*) ret
;
633 /* Create a CRIS ELF linker hash table. */
635 static struct bfd_link_hash_table
*
636 elf_cris_link_hash_table_create (abfd
)
639 struct elf_cris_link_hash_table
*ret
;
640 bfd_size_type amt
= sizeof (struct elf_cris_link_hash_table
);
642 ret
= ((struct elf_cris_link_hash_table
*) bfd_alloc (abfd
, amt
));
643 if (ret
== (struct elf_cris_link_hash_table
*) NULL
)
646 if (! _bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
647 elf_cris_link_hash_newfunc
))
649 bfd_release (abfd
, ret
);
653 /* Initialize to skip over the first three entries in the gotplt; they
654 are used for run-time symbol evaluation. */
655 ret
->next_gotplt_entry
= 12;
657 return &ret
->root
.root
;
660 /* Perform a single relocation. By default we use the standard BFD
661 routines, with a few tweaks. */
663 static bfd_reloc_status_type
664 cris_final_link_relocate (howto
, input_bfd
, input_section
, contents
, rel
,
666 reloc_howto_type
* howto
;
668 asection
* input_section
;
670 Elf_Internal_Rela
* rel
;
673 bfd_reloc_status_type r
;
675 /* PC-relative relocations are relative to the position *after*
676 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
677 not a single byte, since PC must be 16-bit-aligned. */
678 switch (ELF32_R_TYPE (rel
->r_info
))
680 /* Check that the 16-bit GOT relocs are positive. */
681 case R_CRIS_16_GOTPLT
:
683 if ((bfd_signed_vma
) relocation
< 0)
684 return bfd_reloc_overflow
;
687 case R_CRIS_32_PLT_PCREL
:
688 case R_CRIS_32_PCREL
:
692 case R_CRIS_16_PCREL
:
700 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
701 contents
, rel
->r_offset
,
702 relocation
, rel
->r_addend
);
706 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
707 copied, for further comments. */
710 cris_elf_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
711 contents
, relocs
, local_syms
, local_sections
)
712 bfd
* output_bfd ATTRIBUTE_UNUSED
;
713 struct bfd_link_info
* info
;
715 asection
* input_section
;
717 Elf_Internal_Rela
* relocs
;
718 Elf_Internal_Sym
* local_syms
;
719 asection
** local_sections
;
722 Elf_Internal_Shdr
* symtab_hdr
;
723 struct elf_link_hash_entry
** sym_hashes
;
724 bfd_vma
*local_got_offsets
;
728 Elf_Internal_Rela
* rel
;
729 Elf_Internal_Rela
* relend
;
731 dynobj
= elf_hash_table (info
)->dynobj
;
732 local_got_offsets
= elf_local_got_offsets (input_bfd
);
733 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
734 sym_hashes
= elf_sym_hashes (input_bfd
);
735 relend
= relocs
+ input_section
->reloc_count
;
737 /* It seems this can happen with erroneous or unsupported input (mixing
738 a.out and elf in an archive, for example.) */
739 if (sym_hashes
== NULL
)
748 splt
= bfd_get_section_by_name (dynobj
, ".plt");
749 sgot
= bfd_get_section_by_name (dynobj
, ".got");
752 for (rel
= relocs
; rel
< relend
; rel
++)
754 reloc_howto_type
* howto
;
755 unsigned long r_symndx
;
756 Elf_Internal_Sym
* sym
;
758 struct elf_link_hash_entry
* h
;
760 bfd_reloc_status_type r
;
761 const char * symname
= NULL
;
764 r_type
= ELF32_R_TYPE (rel
->r_info
);
766 if ( r_type
== R_CRIS_GNU_VTINHERIT
767 || r_type
== R_CRIS_GNU_VTENTRY
)
770 r_symndx
= ELF32_R_SYM (rel
->r_info
);
772 if (info
->relocateable
)
774 /* This is a relocateable link. We don't have to change
775 anything, unless the reloc is against a section symbol,
776 in which case we have to adjust according to where the
777 section symbol winds up in the output section. */
778 if (r_symndx
< symtab_hdr
->sh_info
)
780 sym
= local_syms
+ r_symndx
;
782 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
784 sec
= local_sections
[r_symndx
];
785 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
792 /* This is a final link. */
793 howto
= cris_elf_howto_table
+ r_type
;
798 if (r_symndx
< symtab_hdr
->sh_info
)
800 sym
= local_syms
+ r_symndx
;
801 sec
= local_sections
[r_symndx
];
802 relocation
= (sec
->output_section
->vma
806 symname
= (bfd_elf_string_from_elf_section
807 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
809 symname
= bfd_section_name (input_bfd
, sec
);
813 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
815 while (h
->root
.type
== bfd_link_hash_indirect
816 || h
->root
.type
== bfd_link_hash_warning
)
817 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
819 symname
= h
->root
.root
.string
;
821 if (h
->root
.type
== bfd_link_hash_defined
822 || h
->root
.type
== bfd_link_hash_defweak
)
824 sec
= h
->root
.u
.def
.section
;
826 /* Perhaps we should detect the cases that
827 sec->output_section is expected to be NULL like i386 and
828 m68k, but apparently (and according to elfxx-ia64.c) all
829 valid cases are where the symbol is defined in a shared
830 object which we link dynamically against. This includes
831 PLT relocs for which we've created a PLT entry and other
832 relocs for which we're prepared to create dynamic
835 For now, new situations cause us to just err when
836 sec->output_offset is NULL but the object with the symbol
837 is *not* dynamically linked against. Thus this will
838 automatically remind us so we can see if there are other
839 valid cases we need to revisit. */
840 if ((sec
->output_section
== NULL
841 && (sec
->owner
->flags
& DYNAMIC
) != 0)
843 /* Here follow the cases where the relocation value must
844 be zero (or when further handling is simplified when
845 zero). I can't claim to understand the various
846 conditions and they weren't described in the files
847 where I copied them from (elf32-m68k.c and
848 elf32-i386.c), but let's mention examples of where
849 they happen. FIXME: Perhaps define and use a
850 dynamic_symbol_p function like ia64.
852 - When creating a shared library, we can have an
853 ordinary relocation for a symbol defined in a shared
854 library (perhaps the one we create). We then make
855 the relocation value zero, as the value seen now will
856 be added into the relocation addend in this shared
857 library, but must be handled only at dynamic-link
858 time. FIXME: Not sure this example covers the
859 h->elf_link_hash_flags test, though it's there in
862 && ((! info
->symbolic
&& h
->dynindx
!= -1)
863 || (h
->elf_link_hash_flags
864 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
865 && (input_section
->flags
& SEC_ALLOC
) != 0
866 && (r_type
== R_CRIS_8
867 || r_type
== R_CRIS_16
868 || r_type
== R_CRIS_32
869 || r_type
== R_CRIS_8_PCREL
870 || r_type
== R_CRIS_16_PCREL
871 || r_type
== R_CRIS_32_PCREL
)))
873 else if (sec
->output_section
!= NULL
)
874 relocation
= (h
->root
.u
.def
.value
875 + sec
->output_section
->vma
876 + sec
->output_offset
);
879 if (input_bfd
->my_archive
)
880 (*_bfd_error_handler
)
881 (_("%s(%s): unresolvable relocation %s against symbol `%s' from %s section"),
882 bfd_get_filename (bfd_my_archive (input_bfd
)),
883 bfd_get_filename (input_bfd
),
884 cris_elf_howto_table
[r_type
].name
,
886 bfd_get_section_name (input_bfd
, input_section
));
888 (*_bfd_error_handler
)
889 (_("%s: unresolvable relocation %s against symbol `%s' from %s section"),
890 bfd_get_filename (input_bfd
),
891 cris_elf_howto_table
[r_type
].name
,
893 bfd_get_section_name (input_bfd
, input_section
));
894 bfd_set_error (bfd_error_bad_value
);
898 else if (h
->root
.type
== bfd_link_hash_undefweak
)
900 else if (info
->shared
902 && !info
->no_undefined
903 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
907 if (!(info
->callbacks
->undefined_symbol
908 (info
, symname
, input_bfd
,
909 input_section
, rel
->r_offset
,
910 (!info
->shared
|| info
->no_undefined
911 || ELF_ST_VISIBILITY (h
->other
)))))
919 case R_CRIS_16_GOTPLT
:
920 case R_CRIS_32_GOTPLT
:
921 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
922 but we require a PLT, and the PLT handling will take care of
923 filling in the PLT-specific GOT entry. For the GOT offset,
924 calculate it as we do when filling it in for the .got.plt
925 section. If we don't have a PLT, punt to GOT handling. */
927 && ((struct elf_cris_link_hash_entry
*) h
)->gotplt_offset
!= 0)
930 = bfd_get_section_by_name (dynobj
, ".got.plt");
933 BFD_ASSERT (h
->dynindx
!= -1);
934 BFD_ASSERT (sgotplt
!= NULL
);
937 = ((struct elf_cris_link_hash_entry
*) h
)->gotplt_offset
;
939 relocation
= got_offset
;
943 /* We didn't make a PLT entry for this symbol. Maybe everything is
944 folded into the GOT. Other than folding, this happens when
945 statically linking PIC code, or when using -Bsymbolic. Check
946 that we instead have a GOT entry as done for us by
947 elf_cris_adjust_dynamic_symbol, and drop through into the
948 ordinary GOT cases. */
949 if (h
!= NULL
&& h
->got
.offset
== (bfd_vma
) -1)
951 (*_bfd_error_handler
)
952 (_("%s: No PLT nor GOT for relocation %s against symbol `%s' from %s section"),
953 bfd_get_filename (input_bfd
),
954 cris_elf_howto_table
[r_type
].name
,
955 symname
[0] != '\0' ? symname
: _("[whose name is lost]"),
956 bfd_get_section_name (input_bfd
, input_section
));
958 /* FIXME: Perhaps blaming input is not the right thing to
959 do; this is probably an internal error. But it is true
960 that we didn't like that particular input. */
961 bfd_set_error (bfd_error_bad_value
);
966 /* The size of the actual relocation is not used here; we only
967 fill in the GOT table here. */
973 /* Note that despite using RELA relocations, the .got contents
974 is always filled in with the link-relative relocation
975 value; the addend. */
980 BFD_ASSERT (off
!= (bfd_vma
) -1);
982 if (!elf_hash_table (info
)->dynamic_sections_created
983 || (! info
->shared
&& h
->dynindx
== -1)
985 && (info
->symbolic
|| h
->dynindx
== -1)
986 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
988 /* This wasn't checked above for ! info->shared, but
989 must hold there if we get here; the symbol must not
990 be used in, or defined by a DSO. (Note that
991 checking for ELF_LINK_HASH_DEF_REGULAR doesn't
993 BFD_ASSERT (info
->shared
994 || (h
->elf_link_hash_flags
995 & (ELF_LINK_HASH_REF_DYNAMIC
996 | ELF_LINK_HASH_DEF_DYNAMIC
)) == 0);
998 /* This is actually a static link, or it is a
999 -Bsymbolic link and the symbol is defined
1000 locally, or the symbol was forced to be local
1001 because of a version file, or we're not creating a
1002 dynamic object and the symbol isn't referred to by
1003 a dynamic object. We must initialize
1004 this entry in the global offset table. Since
1005 the offset must always be a multiple of 4, we
1006 use the least significant bit to record whether
1007 we have initialized it already.
1009 When doing a dynamic link, we create a .rela.got
1010 relocation entry to initialize the value. This
1011 is done in the finish_dynamic_symbol routine. */
1016 bfd_put_32 (output_bfd
, relocation
,
1017 sgot
->contents
+ off
);
1024 BFD_ASSERT (local_got_offsets
!= NULL
1025 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
1027 off
= local_got_offsets
[r_symndx
];
1029 /* The offset must always be a multiple of 4. We use
1030 the least significant bit to record whether we have
1031 already generated the necessary reloc. */
1036 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1041 Elf_Internal_Rela outrel
;
1043 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1044 BFD_ASSERT (srelgot
!= NULL
);
1046 outrel
.r_offset
= (sgot
->output_section
->vma
1047 + sgot
->output_offset
1049 outrel
.r_info
= ELF32_R_INFO (0, R_CRIS_RELATIVE
);
1050 outrel
.r_addend
= relocation
;
1051 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1052 (((Elf32_External_Rela
*)
1054 + srelgot
->reloc_count
));
1055 ++srelgot
->reloc_count
;
1058 local_got_offsets
[r_symndx
] |= 1;
1062 relocation
= sgot
->output_offset
+ off
;
1063 if (rel
->r_addend
!= 0)
1065 /* We can't do anything for a relocation which is against
1066 a symbol *plus offset*. GOT holds relocations for
1067 symbols. Make this an error; the compiler isn't
1068 allowed to pass us these kinds of things. */
1070 (*_bfd_error_handler
)
1071 (_("%s: relocation %s with non-zero addend %d against local symbol from %s section"),
1072 bfd_get_filename (input_bfd
),
1073 cris_elf_howto_table
[r_type
].name
,
1075 bfd_get_section_name (input_bfd
, input_section
));
1077 (*_bfd_error_handler
)
1078 (_("%s: relocation %s with non-zero addend %d against symbol `%s' from %s section"),
1079 bfd_get_filename (input_bfd
),
1080 cris_elf_howto_table
[r_type
].name
,
1082 symname
[0] != '\0' ? symname
: _("[whose name is lost]"),
1083 bfd_get_section_name (input_bfd
, input_section
));
1085 bfd_set_error (bfd_error_bad_value
);
1091 case R_CRIS_32_GOTREL
:
1092 /* This relocation must only be performed against local symbols. */
1095 (*_bfd_error_handler
)
1096 (_("%s: relocation %s is not allowed for global symbol: `%s' from %s section"),
1097 bfd_get_filename (input_bfd
),
1098 cris_elf_howto_table
[r_type
].name
,
1100 bfd_get_section_name (input_bfd
, input_section
));
1101 bfd_set_error (bfd_error_bad_value
);
1105 /* This relocation is like a PC-relative one, except the
1106 reference point is the location of GOT. Note that
1107 sgot->output_offset is not involved in this calculation. We
1108 always want the start of entire .got section, not the
1109 position after the reserved header. */
1110 relocation
-= sgot
->output_section
->vma
;
1113 case R_CRIS_32_PLT_PCREL
:
1114 /* Relocation is to the entry for this symbol in the
1115 procedure linkage table. */
1117 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1118 without using the procedure linkage table. */
1122 if (h
->plt
.offset
== (bfd_vma
) -1
1125 /* We didn't make a PLT entry for this symbol. This
1126 happens when statically linking PIC code, or when
1127 using -Bsymbolic. */
1131 relocation
= (splt
->output_section
->vma
1132 + splt
->output_offset
1136 case R_CRIS_32_PLT_GOTREL
:
1137 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1138 start of the .got section. See also comment at
1140 relocation
-= sgot
->output_section
->vma
;
1142 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1143 without using the procedure linkage table. */
1147 if (h
->plt
.offset
== (bfd_vma
) -1
1150 /* We didn't make a PLT entry for this symbol. This
1151 happens when statically linking PIC code, or when
1152 using -Bsymbolic. */
1156 relocation
= (splt
->output_section
->vma
1157 + splt
->output_offset
1159 - sgot
->output_section
->vma
);
1162 case R_CRIS_8_PCREL
:
1163 case R_CRIS_16_PCREL
:
1164 case R_CRIS_32_PCREL
:
1165 /* If the symbol was local, we need no shlib-specific handling. */
1174 && (input_section
->flags
& SEC_ALLOC
) != 0
1175 && ((r_type
!= R_CRIS_8_PCREL
1176 && r_type
!= R_CRIS_16_PCREL
1177 && r_type
!= R_CRIS_32_PCREL
)
1179 || (h
->elf_link_hash_flags
1180 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
1182 Elf_Internal_Rela outrel
;
1183 boolean skip
, relocate
;
1185 /* When generating a shared object, these relocations
1186 are copied into the output file to be resolved at run
1193 name
= (bfd_elf_string_from_elf_section
1195 elf_elfheader (input_bfd
)->e_shstrndx
,
1196 elf_section_data (input_section
)->rel_hdr
.sh_name
));
1200 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
1201 && strcmp (bfd_get_section_name (input_bfd
,
1205 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1207 /* That section should have been created in
1208 cris_elf_check_relocs, but that function will not be
1209 called for objects which fail in
1210 cris_elf_merge_private_bfd_data. */
1213 (*_bfd_error_handler
)
1214 (_("%s: Internal inconsistency; no relocation section %s"),
1215 bfd_get_filename (input_bfd
),
1218 bfd_set_error (bfd_error_bad_value
);
1225 if (elf_section_data (input_section
)->stab_info
== NULL
)
1226 outrel
.r_offset
= rel
->r_offset
;
1231 off
= (_bfd_stab_section_offset
1232 (output_bfd
, &elf_hash_table (info
)->stab_info
,
1234 &elf_section_data (input_section
)->stab_info
,
1236 if (off
== (bfd_vma
) -1)
1238 outrel
.r_offset
= off
;
1241 outrel
.r_offset
+= (input_section
->output_section
->vma
1242 + input_section
->output_offset
);
1246 memset (&outrel
, 0, sizeof outrel
);
1249 /* h->dynindx may be -1 if the symbol was marked to
1252 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1253 || (h
->elf_link_hash_flags
1254 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
1256 BFD_ASSERT (h
->dynindx
!= -1);
1258 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1259 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1263 if (r_type
== R_CRIS_32
)
1266 outrel
.r_info
= ELF32_R_INFO (0, R_CRIS_RELATIVE
);
1267 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1274 sec
= local_sections
[r_symndx
];
1277 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
1279 == bfd_link_hash_defweak
));
1280 sec
= h
->root
.u
.def
.section
;
1282 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
1284 else if (sec
== NULL
|| sec
->owner
== NULL
)
1286 bfd_set_error (bfd_error_bad_value
);
1293 osec
= sec
->output_section
;
1294 indx
= elf_section_data (osec
)->dynindx
;
1295 BFD_ASSERT (indx
> 0);
1299 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
1300 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1304 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
1305 (((Elf32_External_Rela
*)
1307 + sreloc
->reloc_count
));
1308 ++sreloc
->reloc_count
;
1310 /* This reloc will be computed at runtime, so there's no
1311 need to do anything now, except for R_CRIS_32 relocations
1312 that have been turned into R_CRIS_RELATIVE. */
1320 r
= cris_final_link_relocate (howto
, input_bfd
, input_section
,
1321 contents
, rel
, relocation
);
1323 if (r
!= bfd_reloc_ok
)
1325 const char * msg
= (const char *) NULL
;
1329 case bfd_reloc_overflow
:
1330 r
= info
->callbacks
->reloc_overflow
1331 (info
, symname
, howto
->name
, (bfd_vma
) 0,
1332 input_bfd
, input_section
, rel
->r_offset
);
1335 case bfd_reloc_undefined
:
1336 r
= info
->callbacks
->undefined_symbol
1337 (info
, symname
, input_bfd
, input_section
, rel
->r_offset
,
1341 case bfd_reloc_outofrange
:
1342 msg
= _("internal error: out of range error");
1345 case bfd_reloc_notsupported
:
1346 msg
= _("internal error: unsupported relocation error");
1349 case bfd_reloc_dangerous
:
1350 msg
= _("internal error: dangerous relocation");
1354 msg
= _("internal error: unknown error");
1359 r
= info
->callbacks
->warning
1360 (info
, msg
, symname
, input_bfd
, input_section
, rel
->r_offset
);
1370 /* Finish up dynamic symbol handling. We set the contents of various
1371 dynamic sections here. */
1374 elf_cris_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
1376 struct bfd_link_info
*info
;
1377 struct elf_link_hash_entry
*h
;
1378 Elf_Internal_Sym
*sym
;
1381 int plt_off1
= 2, plt_off2
= 10, plt_off3
= 16;
1383 dynobj
= elf_hash_table (info
)->dynobj
;
1385 if (h
->plt
.offset
!= (bfd_vma
) -1)
1393 bfd_vma gotplt_offset
1394 = ((struct elf_cris_link_hash_entry
*) h
)->gotplt_offset
;
1395 Elf_Internal_Rela rela
;
1396 boolean has_gotplt
= gotplt_offset
!= 0;
1398 /* Get the index in the procedure linkage table which
1399 corresponds to this symbol. This is the index of this symbol
1400 in all the symbols for which we are making plt entries. The
1401 first entry in the procedure linkage table is reserved. */
1402 /* We have to count backwards here, and the result is only valid as
1403 an index into .got.plt and its relocations. FIXME: Constants... */
1404 bfd_vma gotplt_index
= gotplt_offset
/4 - 3;
1406 /* Get the offset into the .got table of the entry that corresponds
1407 to this function. Note that we embed knowledge that "incoming"
1408 .got goes after .got.plt in the output without padding (pointer
1409 aligned). However, that knowledge is present in several other
1410 places too, here and in elflink.h at least. */
1414 : h
->got
.offset
+ elf_cris_hash_table(info
)->next_gotplt_entry
);
1416 /* This symbol has an entry in the procedure linkage table. Set it
1419 BFD_ASSERT (h
->dynindx
!= -1);
1421 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1422 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1423 sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
1424 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1425 BFD_ASSERT (splt
!= NULL
&& sgotplt
!= NULL
1426 && (! has_gotplt
|| srela
!= NULL
));
1428 got_base
= sgotplt
->output_section
->vma
+ sgotplt
->output_offset
;
1430 /* Fill in the entry in the procedure linkage table. */
1433 memcpy (splt
->contents
+ h
->plt
.offset
, elf_cris_plt_entry
,
1436 /* We need to enter the absolute address of the GOT entry here. */
1437 bfd_put_32 (output_bfd
, got_base
+ got_offset
,
1438 splt
->contents
+ h
->plt
.offset
+ plt_off1
);
1442 memcpy (splt
->contents
+ h
->plt
.offset
, elf_cris_pic_plt_entry
,
1444 bfd_put_32 (output_bfd
, got_offset
,
1445 splt
->contents
+ h
->plt
.offset
+ plt_off1
);
1448 /* Fill in the plt entry and make a relocation, if this is a "real"
1452 /* Fill in the offset into the reloc table. */
1453 bfd_put_32 (output_bfd
,
1454 gotplt_index
* sizeof (Elf32_External_Rela
),
1455 splt
->contents
+ h
->plt
.offset
+ plt_off2
);
1457 /* Fill in the offset to the first PLT entry, where to "jump". */
1458 bfd_put_32 (output_bfd
, - (h
->plt
.offset
+ plt_off3
+ 4),
1459 splt
->contents
+ h
->plt
.offset
+ plt_off3
);
1461 /* Fill in the entry in the global offset table with the address of
1462 the relocating stub. */
1463 bfd_put_32 (output_bfd
,
1464 (splt
->output_section
->vma
1465 + splt
->output_offset
1468 sgotplt
->contents
+ got_offset
);
1470 /* Fill in the entry in the .rela.plt section. */
1471 rela
.r_offset
= (sgotplt
->output_section
->vma
1472 + sgotplt
->output_offset
1474 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_CRIS_JUMP_SLOT
);
1476 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1477 ((Elf32_External_Rela
*) srela
->contents
1481 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1483 /* Mark the symbol as undefined, rather than as defined in
1484 the .plt section. Leave the value alone. */
1485 sym
->st_shndx
= SHN_UNDEF
;
1487 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
1488 know whether resetting the value is significant; if it really
1489 is, rather than a quirk or bug in the sparc port, then I
1490 believe we'd see this elsewhere. */
1491 /* If the symbol is weak, we do need to clear the value.
1492 Otherwise, the PLT entry would provide a definition for
1493 the symbol even if the symbol wasn't defined anywhere,
1494 and so the symbol would never be NULL. */
1495 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR_NONWEAK
)
1501 /* We don't emit .got relocs for symbols that aren't in the
1502 dynamic-symbols table for an ordinary program. */
1503 if (h
->got
.offset
!= (bfd_vma
) -1
1504 && (info
->shared
|| h
->dynindx
!= -1))
1508 Elf_Internal_Rela rela
;
1511 /* This symbol has an entry in the global offset table. Set it up. */
1513 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1514 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1515 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1517 rela
.r_offset
= (sgot
->output_section
->vma
1518 + sgot
->output_offset
1519 + (h
->got
.offset
&~ (bfd_vma
) 1));
1521 /* If this is a static link, or it is a -Bsymbolic link and the
1522 symbol is defined locally or was forced to be local because
1523 of a version file, we just want to emit a RELATIVE reloc.
1524 The entry in the global offset table will already have been
1525 initialized in the relocate_section function. */
1526 where
= sgot
->contents
+ (h
->got
.offset
&~ (bfd_vma
) 1);
1527 if (! elf_hash_table (info
)->dynamic_sections_created
1529 && (info
->symbolic
|| h
->dynindx
== -1)
1530 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
1532 rela
.r_info
= ELF32_R_INFO (0, R_CRIS_RELATIVE
);
1533 rela
.r_addend
= bfd_get_signed_32 (output_bfd
, where
);
1537 bfd_put_32 (output_bfd
, (bfd_vma
) 0, where
);
1538 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_CRIS_GLOB_DAT
);
1542 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1543 ((Elf32_External_Rela
*) srela
->contents
1544 + srela
->reloc_count
));
1545 ++srela
->reloc_count
;
1548 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
1551 Elf_Internal_Rela rela
;
1553 /* This symbol needs a copy reloc. Set it up. */
1555 BFD_ASSERT (h
->dynindx
!= -1
1556 && (h
->root
.type
== bfd_link_hash_defined
1557 || h
->root
.type
== bfd_link_hash_defweak
));
1559 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
1561 BFD_ASSERT (s
!= NULL
);
1563 rela
.r_offset
= (h
->root
.u
.def
.value
1564 + h
->root
.u
.def
.section
->output_section
->vma
1565 + h
->root
.u
.def
.section
->output_offset
);
1566 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_CRIS_COPY
);
1568 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
1569 ((Elf32_External_Rela
*) s
->contents
1574 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1575 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1576 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
1577 sym
->st_shndx
= SHN_ABS
;
1582 /* Finish up the dynamic sections. */
1585 elf_cris_finish_dynamic_sections (output_bfd
, info
)
1587 struct bfd_link_info
*info
;
1593 dynobj
= elf_hash_table (info
)->dynobj
;
1595 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
1596 BFD_ASSERT (sgot
!= NULL
);
1597 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1599 if (elf_hash_table (info
)->dynamic_sections_created
)
1602 Elf32_External_Dyn
*dyncon
, *dynconend
;
1604 splt
= bfd_get_section_by_name (dynobj
, ".plt");
1605 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
1607 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1608 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
1609 for (; dyncon
< dynconend
; dyncon
++)
1611 Elf_Internal_Dyn dyn
;
1614 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1622 s
= bfd_get_section_by_name (output_bfd
, ".got");
1623 BFD_ASSERT (s
!= NULL
);
1624 dyn
.d_un
.d_ptr
= s
->vma
;
1625 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1629 /* Yes, we *can* have a .plt and no .plt.rela, for instance
1630 if all symbols are found in the .got (not .got.plt). */
1631 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
1632 dyn
.d_un
.d_ptr
= s
!= NULL
? s
->vma
: 0;
1633 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1637 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
1640 else if (s
->_cooked_size
!= 0)
1641 dyn
.d_un
.d_val
= s
->_cooked_size
;
1643 dyn
.d_un
.d_val
= s
->_raw_size
;
1644 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1648 /* The procedure linkage table relocs (DT_JMPREL) should
1649 not be included in the overall relocs (DT_RELA).
1650 Therefore, we override the DT_RELASZ entry here to
1651 make it not include the JMPREL relocs. Since the
1652 linker script arranges for .rela.plt to follow all
1653 other relocation sections, we don't have to worry
1654 about changing the DT_RELA entry. */
1655 s
= bfd_get_section_by_name (output_bfd
, ".rela.plt");
1658 if (s
->_cooked_size
!= 0)
1659 dyn
.d_un
.d_val
-= s
->_cooked_size
;
1661 dyn
.d_un
.d_val
-= s
->_raw_size
;
1663 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1668 /* Fill in the first entry in the procedure linkage table. */
1669 if (splt
->_raw_size
> 0)
1672 memcpy (splt
->contents
, elf_cris_pic_plt0_entry
, PLT_ENTRY_SIZE
);
1675 memcpy (splt
->contents
, elf_cris_plt0_entry
, PLT_ENTRY_SIZE
);
1676 bfd_put_32 (output_bfd
,
1677 sgot
->output_section
->vma
+ sgot
->output_offset
+ 4,
1678 splt
->contents
+ 6);
1679 bfd_put_32 (output_bfd
,
1680 sgot
->output_section
->vma
+ sgot
->output_offset
+ 8,
1681 splt
->contents
+ 14);
1683 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
1689 /* Fill in the first three entries in the global offset table. */
1690 if (sgot
->_raw_size
> 0)
1693 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1695 bfd_put_32 (output_bfd
,
1696 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1698 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
1699 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
1702 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1707 /* Return the section that should be marked against GC for a given
1711 cris_elf_gc_mark_hook (abfd
, info
, rel
, h
, sym
)
1713 struct bfd_link_info
* info ATTRIBUTE_UNUSED
;
1714 Elf_Internal_Rela
* rel
;
1715 struct elf_link_hash_entry
* h
;
1716 Elf_Internal_Sym
* sym
;
1720 switch (ELF32_R_TYPE (rel
->r_info
))
1722 case R_CRIS_GNU_VTINHERIT
:
1723 case R_CRIS_GNU_VTENTRY
:
1727 switch (h
->root
.type
)
1729 case bfd_link_hash_defined
:
1730 case bfd_link_hash_defweak
:
1731 return h
->root
.u
.def
.section
;
1733 case bfd_link_hash_common
:
1734 return h
->root
.u
.c
.p
->section
;
1743 if (!(elf_bad_symtab (abfd
)
1744 && ELF_ST_BIND (sym
->st_info
) != STB_LOCAL
)
1745 && ! ((sym
->st_shndx
<= 0 || sym
->st_shndx
>= SHN_LORESERVE
)
1746 && sym
->st_shndx
!= SHN_COMMON
))
1748 return bfd_section_from_elf_index (abfd
, sym
->st_shndx
);
1755 /* Update the got entry reference counts for the section being removed. */
1758 cris_elf_gc_sweep_hook (abfd
, info
, sec
, relocs
)
1759 bfd
* abfd ATTRIBUTE_UNUSED
;
1760 struct bfd_link_info
* info ATTRIBUTE_UNUSED
;
1761 asection
* sec ATTRIBUTE_UNUSED
;
1762 const Elf_Internal_Rela
* relocs ATTRIBUTE_UNUSED
;
1764 Elf_Internal_Shdr
*symtab_hdr
;
1765 struct elf_link_hash_entry
**sym_hashes
;
1766 bfd_signed_vma
*local_got_refcounts
;
1767 const Elf_Internal_Rela
*rel
, *relend
;
1768 unsigned long r_symndx
;
1769 struct elf_link_hash_entry
*h
;
1774 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1775 sym_hashes
= elf_sym_hashes (abfd
);
1776 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1778 dynobj
= elf_hash_table (info
)->dynobj
;
1782 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1783 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
1785 relend
= relocs
+ sec
->reloc_count
;
1786 for (rel
= relocs
; rel
< relend
; rel
++)
1788 switch (ELF32_R_TYPE (rel
->r_info
))
1792 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1793 if (r_symndx
>= symtab_hdr
->sh_info
)
1795 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1796 if (h
->got
.refcount
> 0)
1799 if (h
->got
.refcount
== 0)
1801 /* We don't need the .got entry any more. */
1802 sgot
->_raw_size
-= 4;
1803 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
1810 if (local_got_refcounts
!= NULL
)
1812 if (local_got_refcounts
[r_symndx
] > 0)
1814 --local_got_refcounts
[r_symndx
];
1815 if (local_got_refcounts
[r_symndx
] == 0)
1817 /* We don't need the .got entry any more. */
1818 sgot
->_raw_size
-= 4;
1820 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
1826 case R_CRIS_16_GOTPLT
:
1827 case R_CRIS_32_GOTPLT
:
1828 /* For local symbols, treat these like GOT relocs. */
1829 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1830 if (r_symndx
< symtab_hdr
->sh_info
)
1831 goto local_got_reloc
;
1833 case R_CRIS_32_PLT_GOTREL
:
1834 /* FIXME: We don't garbage-collect away the .got section. */
1835 if (local_got_refcounts
!= NULL
)
1836 local_got_refcounts
[-1]--;
1839 case R_CRIS_8_PCREL
:
1840 case R_CRIS_16_PCREL
:
1841 case R_CRIS_32_PCREL
:
1842 case R_CRIS_32_PLT_PCREL
:
1843 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1844 if (r_symndx
>= symtab_hdr
->sh_info
)
1846 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1847 if (h
->plt
.refcount
> 0)
1860 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
1861 entry but we found we will not create any. Called when we find we will
1862 not have any PLT for this symbol, by for example
1863 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
1864 or elf_cris_size_dynamic_sections if no dynamic sections will be
1865 created (we're only linking static objects). */
1868 elf_cris_adjust_gotplt_to_got (h
, p
)
1869 struct elf_cris_link_hash_entry
*h
;
1872 struct bfd_link_info
*info
= (struct bfd_link_info
*) p
;
1873 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
1875 BFD_ASSERT (dynobj
!= NULL
);
1877 /* If nobody wanted a GOTPLT with this symbol, we're done. */
1878 if (h
->gotplt_refcount
<= 0)
1881 if (h
->root
.got
.refcount
> 0)
1883 /* There's a GOT entry for this symbol. Just adjust the refcount.
1884 Probably not necessary at this stage, but keeping it accurate
1885 helps avoiding surprises later. */
1886 h
->root
.got
.refcount
+= h
->gotplt_refcount
;
1887 h
->gotplt_refcount
= -1;
1891 /* No GOT entry for this symbol. We need to create one. */
1892 asection
*sgot
= bfd_get_section_by_name (dynobj
, ".got");
1894 = bfd_get_section_by_name (dynobj
, ".rela.got");
1896 /* Put an accurate refcount there. */
1897 h
->root
.got
.refcount
= h
->gotplt_refcount
;
1899 h
->gotplt_refcount
= -1;
1901 /* We always have a .got section when there are dynamic
1903 BFD_ASSERT (sgot
!= NULL
/* Surely have .got section. */);
1905 /* We might have had a PLT but with no GOT entry and
1906 further no GOT reloc section at all needed before.
1908 if (srelgot
== NULL
)
1910 srelgot
= bfd_make_section (dynobj
, ".rela.got");
1913 || !bfd_set_section_flags (dynobj
, srelgot
,
1918 | SEC_LINKER_CREATED
1920 || !bfd_set_section_alignment (dynobj
, srelgot
, 2))
1924 /* Allocate space in the .got section. */
1925 sgot
->_raw_size
+= 4;
1927 /* Allocate relocation space. */
1928 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
1934 /* Try to fold PLT entries with GOT entries. There are two cases when we
1937 - When all PLT references are GOTPLT references, and there are GOT
1938 references. We don't have to generate a PLT at all.
1940 - When there are both (ordinary) PLT references and GOT references.
1941 We want to make the PLT reference use the ordinary GOT entry rather
1942 than a run-time dynamically resolved GOTPLT entry (since the GOT
1943 entry will have to be resolved at startup anyway).
1945 Though the latter case is handled when room for the PLT is allocated,
1948 Note that this function is called before symbols are forced local by
1949 version scripts. The differing cases are handled by
1950 elf_cris_hide_symbol. */
1953 elf_cris_try_fold_plt_to_got (h
, p
)
1954 struct elf_cris_link_hash_entry
*h
;
1957 struct bfd_link_info
*info
= (struct bfd_link_info
*) p
;
1959 /* If there are no GOT references for this symbol, we can't fold any
1960 other reference so there's nothing to do. Likewise if there are no
1961 PLT references; GOTPLT references included. */
1962 if (h
->root
.got
.refcount
<= 0 || h
->root
.plt
.refcount
<= 0)
1965 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
1966 BFD_ASSERT (h
->gotplt_refcount
<= h
->root
.plt
.refcount
);
1968 if (h
->gotplt_refcount
== h
->root
.plt
.refcount
)
1970 /* The only PLT references are GOTPLT references, and there are GOT
1971 references. Convert PLT to GOT references. */
1972 if (! elf_cris_adjust_gotplt_to_got (h
, info
))
1975 /* Clear the PLT references, so no PLT will be created. */
1976 h
->root
.plt
.offset
= (bfd_vma
) -1;
1982 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
1983 to use a GOT entry (and create one) rather than requiring a GOTPLT
1987 elf_cris_hide_symbol (info
, h
)
1988 struct bfd_link_info
*info
;
1989 struct elf_link_hash_entry
*h
;
1991 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry
*) h
, info
);
1993 _bfd_elf_link_hash_hide_symbol (info
, h
);
1996 /* Adjust a symbol defined by a dynamic object and referenced by a
1997 regular object. The current definition is in some section of the
1998 dynamic object, but we're not including those sections. We have to
1999 change the definition to something the rest of the link can
2003 elf_cris_adjust_dynamic_symbol (info
, h
)
2004 struct bfd_link_info
*info
;
2005 struct elf_link_hash_entry
*h
;
2009 unsigned int power_of_two
;
2011 dynobj
= elf_hash_table (info
)->dynobj
;
2013 /* Make sure we know what is going on here. */
2014 BFD_ASSERT (dynobj
!= NULL
2015 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
2016 || h
->weakdef
!= NULL
2017 || ((h
->elf_link_hash_flags
2018 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
2019 && (h
->elf_link_hash_flags
2020 & ELF_LINK_HASH_REF_REGULAR
) != 0
2021 && (h
->elf_link_hash_flags
2022 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
2024 /* If this is a function, put it in the procedure linkage table. We
2025 will fill in the contents of the procedure linkage table later,
2026 when we know the address of the .got section. */
2027 if (h
->type
== STT_FUNC
2028 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
2031 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
2032 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0
2033 /* We must always create the plt entry if it was referenced by a
2034 PLT relocation. In this case we already recorded it as a
2036 /* FIXME: m68k and i386 differ here, for unclear reasons. */
2037 && h
->dynindx
== -1)
2039 /* This case can occur if we saw a PLT reloc in an input file,
2040 but the symbol was never referred to by a dynamic object. In
2041 such a case, we don't actually need to build a procedure
2042 linkage table, and we can just do a PC reloc instead, or
2043 change a .got.plt index to a .got index for GOTPLT relocs. */
2044 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
2045 h
->plt
.offset
= (bfd_vma
) -1;
2048 elf_cris_adjust_gotplt_to_got ((struct
2049 elf_cris_link_hash_entry
*) h
,
2053 /* If there are only GOT references and GOTPLT references to this
2054 PLT entry, get rid of the PLT. */
2055 if (! elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry
*)
2059 /* GC or folding may have rendered this entry unused. */
2060 if (h
->plt
.refcount
<= 0)
2062 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
2063 h
->plt
.offset
= (bfd_vma
) -1;
2067 /* Make sure this symbol is output as a dynamic symbol. */
2068 if (h
->dynindx
== -1)
2070 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
2074 s
= bfd_get_section_by_name (dynobj
, ".plt");
2075 BFD_ASSERT (s
!= NULL
);
2077 /* If this is the first .plt entry, make room for the special
2079 if (s
->_raw_size
== 0)
2080 s
->_raw_size
+= PLT_ENTRY_SIZE
;
2082 /* If this symbol is not defined in a regular file, and we are
2083 not generating a shared library, then set the symbol to this
2084 location in the .plt. This is required to make function
2085 pointers compare as equal between the normal executable and
2086 the shared library. */
2088 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
2090 h
->root
.u
.def
.section
= s
;
2091 h
->root
.u
.def
.value
= s
->_raw_size
;
2094 /* If there's already a GOT entry, use that, not a .got.plt. A
2095 GOT field still has a reference count when we get here; it's
2096 not yet changed to an offset. */
2097 if (h
->got
.refcount
> 0)
2099 h
->got
.refcount
+= h
->plt
.refcount
;
2101 /* Mark the PLT offset to use the GOT entry by setting the low
2102 bit in the plt offset; it is always a multiple of
2104 BFD_ASSERT ((s
->_raw_size
& 3) == 0);
2106 /* Change the PLT refcount to an offset. */
2107 h
->plt
.offset
= s
->_raw_size
;
2109 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2110 that the got entry should be used instead. */
2111 BFD_ASSERT (((struct elf_cris_link_hash_entry
*)
2112 h
)->gotplt_offset
== 0);
2114 /* Make room for this entry. */
2115 s
->_raw_size
+= PLT_ENTRY_SIZE
;
2120 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2121 h
->plt
.offset
= s
->_raw_size
;
2123 /* Make room for this entry. */
2124 s
->_raw_size
+= PLT_ENTRY_SIZE
;
2126 /* We also need to make an entry in the .got.plt section, which
2127 will be placed in the .got section by the linker script. */
2128 ((struct elf_cris_link_hash_entry
*) h
)->gotplt_offset
2129 = elf_cris_hash_table (info
)->next_gotplt_entry
;
2130 elf_cris_hash_table (info
)->next_gotplt_entry
+= 4;
2132 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
2133 BFD_ASSERT (s
!= NULL
);
2136 /* We also need to make an entry in the .rela.plt section. */
2138 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
2139 BFD_ASSERT (s
!= NULL
);
2140 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
2145 /* Reinitialize the plt offset now that it is not used as a reference
2147 h
->plt
.offset
= (bfd_vma
) -1;
2149 /* If this is a weak symbol, and there is a real definition, the
2150 processor independent code will have arranged for us to see the
2151 real definition first, and we can just use the same value. */
2152 if (h
->weakdef
!= NULL
)
2154 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
2155 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
2156 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
2157 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
2161 /* This is a reference to a symbol defined by a dynamic object which
2162 is not a function. */
2164 /* If we are creating a shared library, we must presume that the
2165 only references to the symbol are via the global offset table.
2166 For such cases we need not do anything here; the relocations will
2167 be handled correctly by relocate_section. */
2171 /* If there are no references to this symbol that do not use the
2172 GOT, we don't need to generate a copy reloc. */
2173 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
2176 /* We must allocate the symbol in our .dynbss section, which will
2177 become part of the .bss section of the executable. There will be
2178 an entry for this symbol in the .dynsym section. The dynamic
2179 object will contain position independent code, so all references
2180 from the dynamic object to this symbol will go through the global
2181 offset table. The dynamic linker will use the .dynsym entry to
2182 determine the address it must put in the global offset table, so
2183 both the dynamic object and the regular object will refer to the
2184 same memory location for the variable. */
2186 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
2187 BFD_ASSERT (s
!= NULL
);
2189 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2190 copy the initial value out of the dynamic object and into the
2191 runtime process image. We need to remember the offset into the
2192 .rela.bss section we are going to use. */
2193 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
2197 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
2198 BFD_ASSERT (srel
!= NULL
);
2199 srel
->_raw_size
+= sizeof (Elf32_External_Rela
);
2200 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
2203 /* Historic precedent: m68k and i386 allow max 8-byte alignment for the
2204 thing to copy; so do we. */
2206 /* We need to figure out the alignment required for this symbol. I
2207 have no idea how ELF linkers handle this. */
2208 power_of_two
= bfd_log2 (h
->size
);
2209 if (power_of_two
> 3)
2212 /* Apply the required alignment. */
2213 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
2214 (bfd_size_type
) (1 << power_of_two
));
2215 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
2217 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
2221 /* Define the symbol as being at this point in the section. */
2222 h
->root
.u
.def
.section
= s
;
2223 h
->root
.u
.def
.value
= s
->_raw_size
;
2225 /* Increment the section size to make room for the symbol. */
2226 s
->_raw_size
+= h
->size
;
2231 /* Look through the relocs for a section during the first phase. */
2234 cris_elf_check_relocs (abfd
, info
, sec
, relocs
)
2236 struct bfd_link_info
*info
;
2238 const Elf_Internal_Rela
*relocs
;
2241 Elf_Internal_Shdr
*symtab_hdr
;
2242 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
2243 bfd_signed_vma
*local_got_refcounts
;
2244 const Elf_Internal_Rela
*rel
;
2245 const Elf_Internal_Rela
*rel_end
;
2250 if (info
->relocateable
)
2253 dynobj
= elf_hash_table (info
)->dynobj
;
2254 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2255 sym_hashes
= elf_sym_hashes (abfd
);
2256 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof (Elf32_External_Sym
);
2257 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2263 if (!elf_bad_symtab (abfd
))
2264 sym_hashes_end
-= symtab_hdr
->sh_info
;
2266 rel_end
= relocs
+ sec
->reloc_count
;
2267 for (rel
= relocs
; rel
< rel_end
; rel
++)
2269 struct elf_link_hash_entry
*h
;
2270 unsigned long r_symndx
;
2271 enum elf_cris_reloc_type r_type
;
2273 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2274 if (r_symndx
< symtab_hdr
->sh_info
)
2277 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2279 r_type
= ELF32_R_TYPE (rel
->r_info
);
2281 /* Some relocs require linker-created sections; we need to hang them
2282 on the first input bfd we found that contained dynamic relocs. */
2287 case R_CRIS_32_GOTREL
:
2288 case R_CRIS_32_PLT_GOTREL
:
2289 case R_CRIS_32_PLT_PCREL
:
2290 case R_CRIS_16_GOTPLT
:
2291 case R_CRIS_32_GOTPLT
:
2294 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
2296 /* Create the .got section, so we can assume it's always
2297 present whenever there's a dynobj. */
2298 if (!_bfd_elf_create_got_section (dynobj
, info
))
2307 /* Some relocs require a global offset table (but perhaps not a
2308 specific GOT entry). */
2313 case R_CRIS_32_GOTREL
:
2314 case R_CRIS_32_PLT_GOTREL
:
2316 sgot
= bfd_get_section_by_name (dynobj
, ".got");
2318 if (local_got_refcounts
== NULL
)
2322 /* We use index local_got_refcounts[-1] to count all
2323 GOT-relative relocations that do not have explicit
2325 amt
= symtab_hdr
->sh_info
+ 1;
2326 amt
*= sizeof (bfd_signed_vma
);
2327 local_got_refcounts
= ((bfd_signed_vma
*) bfd_alloc (abfd
, amt
));
2328 if (local_got_refcounts
== NULL
)
2330 memset (local_got_refcounts
, -1, (size_t) amt
);
2332 local_got_refcounts
++;
2333 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2343 case R_CRIS_16_GOTPLT
:
2344 case R_CRIS_32_GOTPLT
:
2345 /* Mark that we need a GOT entry if the PLT entry (and its GOT
2346 entry) is eliminated. We can only do this for a non-local
2350 ((struct elf_cris_link_hash_entry
*) h
)->gotplt_refcount
++;
2351 goto handle_gotplt_reloc
;
2353 /* If h is NULL then this is a local symbol, and we must make a
2354 GOT entry for it, so handle it like a GOT reloc. */
2359 /* This symbol requires a global offset table entry. */
2362 && (h
!= NULL
|| info
->shared
))
2364 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
2365 if (srelgot
== NULL
)
2367 srelgot
= bfd_make_section (dynobj
, ".rela.got");
2369 || !bfd_set_section_flags (dynobj
, srelgot
,
2374 | SEC_LINKER_CREATED
2376 || !bfd_set_section_alignment (dynobj
, srelgot
, 2))
2383 if (h
->got
.refcount
== -1)
2385 h
->got
.refcount
= 1;
2387 /* Make sure this symbol is output as a dynamic symbol. */
2388 if (h
->dynindx
== -1)
2390 if (!bfd_elf32_link_record_dynamic_symbol (info
, h
))
2394 /* Allocate space in the .got section. */
2395 sgot
->_raw_size
+= 4;
2396 /* Allocate relocation space. */
2397 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
2404 /* This is a global offset table entry for a local symbol. */
2405 if (local_got_refcounts
[r_symndx
] == -1)
2407 local_got_refcounts
[r_symndx
] = 1;
2409 sgot
->_raw_size
+= 4;
2412 /* If we are generating a shared object, we need to
2413 output a R_CRIS_RELATIVE reloc so that the dynamic
2414 linker can adjust this GOT entry. */
2415 srelgot
->_raw_size
+= sizeof (Elf32_External_Rela
);
2419 local_got_refcounts
[r_symndx
]++;
2423 case R_CRIS_32_GOTREL
:
2424 /* This reference requires a global offset table.
2425 FIXME: The actual refcount isn't used currently; the .got
2426 section can't be removed if there were any references in the
2428 local_got_refcounts
[-1]++;
2431 handle_gotplt_reloc
:
2433 case R_CRIS_32_PLT_GOTREL
:
2434 /* This reference requires a global offset table. */
2435 local_got_refcounts
[-1]++;
2438 case R_CRIS_32_PLT_PCREL
:
2439 /* This symbol requires a procedure linkage table entry. We
2440 actually build the entry in adjust_dynamic_symbol,
2441 because this might be a case of linking PIC code which is
2442 never referenced by a dynamic object, in which case we
2443 don't need to generate a procedure linkage table entry
2446 /* If this is a local symbol, we resolve it directly without
2447 creating a procedure linkage table entry. */
2451 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
2452 if (h
->plt
.refcount
== -1)
2453 h
->plt
.refcount
= 1;
2461 /* Let's help debug shared library creation. Any of these
2462 relocs can be used in shared libs, but pages containing them
2463 cannot be shared. Don't warn for sections we don't care
2464 about, such as debug sections or non-constant sections. We
2465 can't help tables of (global) function pointers, for example,
2466 though they must be emitted in a data section to avoid having
2467 impure text sections. */
2469 && (sec
->flags
& SEC_ALLOC
) != 0
2470 && (sec
->flags
& SEC_READONLY
) != 0)
2472 /* FIXME: How do we make this optionally a warning only? */
2473 if (abfd
->my_archive
)
2474 (*_bfd_error_handler
)
2475 (_("%s(%s), section %s:\n relocation %s should not be used in a shared object; recompile with -fPIC"),
2476 bfd_get_filename (bfd_my_archive (abfd
)),
2477 bfd_get_filename (abfd
),
2479 cris_elf_howto_table
[r_type
].name
);
2481 (*_bfd_error_handler
)
2482 (_("%s, section %s:\n relocation %s should not be used in a shared object; recompile with -fPIC"),
2483 bfd_get_filename (abfd
),
2485 cris_elf_howto_table
[r_type
].name
);
2489 case R_CRIS_8_PCREL
:
2490 case R_CRIS_16_PCREL
:
2491 case R_CRIS_32_PCREL
:
2494 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
2496 /* Make sure a plt entry is created for this symbol if it
2497 turns out to be a function defined by a dynamic object. */
2498 if (h
->plt
.refcount
== -1)
2499 h
->plt
.refcount
= 1;
2504 /* If we are creating a shared library and this is not a local
2505 symbol, we need to copy the reloc into the shared library.
2506 However when linking with -Bsymbolic and this is a global
2507 symbol which is defined in an object we are including in the
2508 link (i.e., DEF_REGULAR is set), then we can resolve the
2509 reloc directly. At this point we have not seen all the input
2510 files, so it is possible that DEF_REGULAR is not set now but
2511 will be set later (it is never cleared). In case of a weak
2512 definition, DEF_REGULAR may be cleared later by a strong
2513 definition in a shared library. We account for that
2514 possibility below by storing information in the relocs_copied
2515 field of the hash table entry. A similar situation occurs
2516 when creating shared libraries and symbol visibility changes
2517 render the symbol local. */
2519 /* No need to do anything if we're not creating a shared object. */
2523 /* We don't need to handle relocs into sections not going into
2524 the "real" output. */
2525 if ((sec
->flags
& SEC_ALLOC
) == 0)
2528 /* We can only eliminate PC-relative relocs. */
2529 if (r_type
== R_CRIS_8_PCREL
2530 || r_type
== R_CRIS_16_PCREL
2531 || r_type
== R_CRIS_32_PCREL
)
2533 /* If the symbol is local, then we can eliminate the reloc. */
2537 /* If this is with -Bsymbolic and the symbol isn't weak, and
2538 is defined by an ordinary object (the ones we include in
2539 this shared library) then we can also eliminate the
2540 reloc. See comment above for more eliminable cases which
2541 we can't identify at this time. */
2543 && h
->root
.type
!= bfd_link_hash_defweak
2544 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0)
2548 /* We create a reloc section in dynobj and make room for this
2554 name
= (bfd_elf_string_from_elf_section
2556 elf_elfheader (abfd
)->e_shstrndx
,
2557 elf_section_data (sec
)->rel_hdr
.sh_name
));
2561 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
2562 && strcmp (bfd_get_section_name (abfd
, sec
),
2565 sreloc
= bfd_get_section_by_name (dynobj
, name
);
2568 sreloc
= bfd_make_section (dynobj
, name
);
2570 || !bfd_set_section_flags (dynobj
, sreloc
,
2575 | SEC_LINKER_CREATED
2577 || !bfd_set_section_alignment (dynobj
, sreloc
, 2))
2580 if (sec
->flags
& SEC_READONLY
)
2581 info
->flags
|= DF_TEXTREL
;
2584 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
2586 /* If we are linking with -Bsymbolic, we count the number of PC
2587 relative relocations we have entered for this symbol, so that
2588 we can discard them again if the symbol is later defined by a
2589 regular object. We know that h is really a pointer to an
2590 elf_cris_link_hash_entry. */
2591 if ((r_type
== R_CRIS_8_PCREL
2592 || r_type
== R_CRIS_16_PCREL
2593 || r_type
== R_CRIS_32_PCREL
)
2596 struct elf_cris_link_hash_entry
*eh
;
2597 struct elf_cris_pcrel_relocs_copied
*p
;
2599 eh
= (struct elf_cris_link_hash_entry
*) h
;
2601 for (p
= eh
->pcrel_relocs_copied
; p
!= NULL
; p
= p
->next
)
2602 if (p
->section
== sreloc
)
2607 p
= ((struct elf_cris_pcrel_relocs_copied
*)
2608 bfd_alloc (dynobj
, (bfd_size_type
) sizeof *p
));
2611 p
->next
= eh
->pcrel_relocs_copied
;
2612 eh
->pcrel_relocs_copied
= p
;
2613 p
->section
= sreloc
;
2621 /* This relocation describes the C++ object vtable hierarchy.
2622 Reconstruct it for later use during GC. */
2623 case R_CRIS_GNU_VTINHERIT
:
2624 if (!_bfd_elf32_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
2628 /* This relocation describes which C++ vtable entries are actually
2629 used. Record for later use during GC. */
2630 case R_CRIS_GNU_VTENTRY
:
2631 if (!_bfd_elf32_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
2636 /* Other relocs do not appear here. */
2637 bfd_set_error (bfd_error_bad_value
);
2645 /* Set the sizes of the dynamic sections. */
2648 elf_cris_size_dynamic_sections (output_bfd
, info
)
2649 bfd
*output_bfd ATTRIBUTE_UNUSED
;
2650 struct bfd_link_info
*info
;
2657 dynobj
= elf_hash_table (info
)->dynobj
;
2658 BFD_ASSERT (dynobj
!= NULL
);
2660 if (elf_hash_table (info
)->dynamic_sections_created
)
2662 /* Set the contents of the .interp section to the interpreter. */
2665 s
= bfd_get_section_by_name (dynobj
, ".interp");
2666 BFD_ASSERT (s
!= NULL
);
2667 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2668 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2673 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
2674 elf_cris_link_hash_traverse (elf_cris_hash_table (info
),
2675 elf_cris_adjust_gotplt_to_got
,
2678 /* We may have created entries in the .rela.got section.
2679 However, if we are not creating the dynamic sections, we will
2680 not actually use these entries. Reset the size of .rela.got,
2681 which will cause it to get stripped from the output file
2683 s
= bfd_get_section_by_name (dynobj
, ".rela.got");
2688 /* If this is a -Bsymbolic shared link, then we need to discard all PC
2689 relative relocs against symbols defined in a regular object. We
2690 allocated space for them in the check_relocs routine, but we will not
2691 fill them in in the relocate_section routine. We also discard space
2692 for relocs that have become for local symbols due to symbol
2693 visibility changes. For programs, we discard space for relocs for
2694 symbols not referenced by any dynamic object. */
2696 elf_cris_link_hash_traverse (elf_cris_hash_table (info
),
2697 elf_cris_discard_excess_dso_dynamics
,
2700 elf_cris_link_hash_traverse (elf_cris_hash_table (info
),
2701 elf_cris_discard_excess_program_dynamics
,
2704 /* The check_relocs and adjust_dynamic_symbol entry points have
2705 determined the sizes of the various dynamic sections. Allocate
2709 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2714 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2717 /* It's OK to base decisions on the section name, because none
2718 of the dynobj section names depend upon the input files. */
2719 name
= bfd_get_section_name (dynobj
, s
);
2723 if (strcmp (name
, ".plt") == 0)
2725 if (s
->_raw_size
== 0)
2727 /* Strip this section if we don't need it; see the
2733 /* Remember whether there is a PLT. */
2737 else if (strncmp (name
, ".rela", 5) == 0)
2739 if (s
->_raw_size
== 0)
2741 /* If we don't need this section, strip it from the
2742 output file. This is mostly to handle .rela.bss and
2743 .rela.plt. We must create both sections in
2744 create_dynamic_sections, because they must be created
2745 before the linker maps input sections to output
2746 sections. The linker does that before
2747 adjust_dynamic_symbol is called, and it is that
2748 function which decides whether anything needs to go
2749 into these sections. */
2754 /* Remember whether there are any reloc sections other
2756 if (strcmp (name
, ".rela.plt") != 0)
2759 /* We use the reloc_count field as a counter if we need
2760 to copy relocs into the output file. */
2764 else if (strncmp (name
, ".got", 4) != 0)
2766 /* It's not one of our sections, so don't allocate space. */
2772 _bfd_strip_section_from_output (info
, s
);
2776 /* Allocate memory for the section contents. We use bfd_zalloc here
2777 in case unused entries are not reclaimed before the section's
2778 contents are written out. This should not happen, but this way
2779 if it does, we will not write out garbage. For reloc sections,
2780 this will make entries have the type R_CRIS_NONE. */
2781 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
2782 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
2786 if (elf_hash_table (info
)->dynamic_sections_created
)
2788 /* Add some entries to the .dynamic section. We fill in the
2789 values later, in elf_cris_finish_dynamic_sections, but we
2790 must add the entries now so that we get the correct size for
2791 the .dynamic section. The DT_DEBUG entry is filled in by the
2792 dynamic linker and used by the debugger. */
2793 #define add_dynamic_entry(TAG, VAL) \
2794 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2798 if (!add_dynamic_entry (DT_DEBUG
, 0))
2804 if (!add_dynamic_entry (DT_PLTGOT
, 0)
2805 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
2806 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2807 || !add_dynamic_entry (DT_JMPREL
, 0))
2813 if (!add_dynamic_entry (DT_RELA
, 0)
2814 || !add_dynamic_entry (DT_RELASZ
, 0)
2815 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
2819 if ((info
->flags
& DF_TEXTREL
) != 0)
2821 if (!add_dynamic_entry (DT_TEXTREL
, 0))
2823 info
->flags
|= DF_TEXTREL
;
2826 #undef add_dynamic_entry
2831 /* This function is called via elf_cris_link_hash_traverse if we are
2832 creating a shared object. In the -Bsymbolic case, it discards the
2833 space allocated to copy PC relative relocs against symbols which
2834 are defined in regular objects. For the normal non-symbolic case,
2835 we also discard space for relocs that have become local due to
2836 symbol visibility changes. We allocated space for them in the
2837 check_relocs routine, but we won't fill them in in the
2838 relocate_section routine. */
2841 elf_cris_discard_excess_dso_dynamics (h
, inf
)
2842 struct elf_cris_link_hash_entry
*h
;
2845 struct elf_cris_pcrel_relocs_copied
*s
;
2846 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2848 /* If a symbol has been forced local or we have found a regular
2849 definition for the symbolic link case, then we won't be needing
2851 if ((h
->root
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) != 0
2852 && ((h
->root
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0
2855 for (s
= h
->pcrel_relocs_copied
; s
!= NULL
; s
= s
->next
)
2856 s
->section
->_raw_size
-= s
->count
* sizeof (Elf32_External_Rela
);
2862 /* This function is called via elf_cris_link_hash_traverse if we are *not*
2863 creating a shared object. We discard space for relocs for symbols put
2864 in the .got, but which we found we do not have to resolve at run-time. */
2867 elf_cris_discard_excess_program_dynamics (h
, inf
)
2868 struct elf_cris_link_hash_entry
*h
;
2871 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
2873 /* If we're not creating a shared library and have a symbol which is
2874 referred to by .got references, but the symbol is defined locally,
2875 (or rather, not referred to by a DSO and not defined by a DSO) then
2876 lose the reloc for the .got (don't allocate room for it). */
2877 if ((h
->root
.elf_link_hash_flags
2878 & (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_DEF_DYNAMIC
)) == 0)
2880 if (h
->root
.got
.refcount
> 0
2881 /* The size of this section is only valid and in sync with the
2882 various reference counts if we do dynamic; don't decrement it
2884 && elf_hash_table (info
)->dynamic_sections_created
)
2886 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
2889 BFD_ASSERT (dynobj
!= NULL
);
2891 srelgot
= bfd_get_section_by_name (dynobj
, ".rela.got");
2893 BFD_ASSERT (srelgot
!= NULL
);
2895 srelgot
->_raw_size
-= sizeof (Elf32_External_Rela
);
2898 /* If the locally-defined symbol isn't used by a DSO, then we don't
2899 have to export it as a dynamic symbol. This was already done for
2900 functions; doing this for all symbols would presumably not
2901 introduce new problems. */
2902 h
->root
.dynindx
= -1;
2908 /* Reject a file depending on presence and expectation of prefixed
2909 underscores on symbols. */
2912 cris_elf_object_p (abfd
)
2915 if ((elf_elfheader (abfd
)->e_flags
& EF_CRIS_UNDERSCORE
))
2916 return (bfd_get_symbol_leading_char (abfd
) == '_');
2918 return (bfd_get_symbol_leading_char (abfd
) == 0);
2921 /* Mark presence or absence of leading underscore. */
2924 cris_elf_final_write_processing (abfd
, linker
)
2926 boolean linker ATTRIBUTE_UNUSED
;
2928 if (bfd_get_symbol_leading_char (abfd
) == '_')
2929 elf_elfheader (abfd
)->e_flags
|= EF_CRIS_UNDERSCORE
;
2931 elf_elfheader (abfd
)->e_flags
&= ~EF_CRIS_UNDERSCORE
;
2934 /* Display the flags field. */
2937 cris_elf_print_private_bfd_data (abfd
, ptr
)
2941 FILE *file
= (FILE *) ptr
;
2943 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
)
2945 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
2947 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
2949 if (elf_elfheader (abfd
)->e_flags
& EF_CRIS_UNDERSCORE
)
2950 fprintf (file
, _(" [symbols have a _ prefix]"));
2956 /* Don't mix files with and without a leading underscore. */
2959 cris_elf_merge_private_bfd_data (ibfd
, obfd
)
2963 flagword old_flags
, new_flags
;
2965 if (_bfd_generic_verify_endian_match (ibfd
, obfd
) == false)
2968 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2969 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2972 if (! elf_flags_init (obfd
))
2974 /* This happens when ld starts out with a 'blank' output file. */
2975 elf_flags_init (obfd
) = true;
2977 /* Set flags according to current bfd_target. */
2978 cris_elf_final_write_processing (obfd
, false);
2981 old_flags
= elf_elfheader (obfd
)->e_flags
;
2982 new_flags
= elf_elfheader (ibfd
)->e_flags
;
2984 /* Is this good or bad? We'll follow with other excluding flags. */
2985 if ((old_flags
& EF_CRIS_UNDERSCORE
) != (new_flags
& EF_CRIS_UNDERSCORE
))
2987 (*_bfd_error_handler
)
2988 ((new_flags
& EF_CRIS_UNDERSCORE
)
2989 ? _("%s: uses _-prefixed symbols, but writing file with non-prefixed symbols")
2990 : _("%s: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
2991 bfd_get_filename (ibfd
));
2992 bfd_set_error (bfd_error_bad_value
);
3000 static enum elf_reloc_type_class
3001 elf_cris_reloc_type_class (type
)
3006 case R_CRIS_RELATIVE
:
3007 return reloc_class_relative
;
3008 case R_CRIS_JUMP_SLOT
:
3009 return reloc_class_plt
;
3011 return reloc_class_copy
;
3013 return reloc_class_normal
;
3017 #define ELF_ARCH bfd_arch_cris
3018 #define ELF_MACHINE_CODE EM_CRIS
3019 #define ELF_MAXPAGESIZE 0x2000
3021 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
3022 #define TARGET_LITTLE_NAME "elf32-cris"
3023 #define elf_symbol_leading_char 0
3025 #define elf_info_to_howto_rel NULL
3026 #define elf_info_to_howto cris_info_to_howto_rela
3027 #define elf_backend_relocate_section cris_elf_relocate_section
3028 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
3029 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
3030 #define elf_backend_check_relocs cris_elf_check_relocs
3032 #define elf_backend_can_gc_sections 1
3034 #define elf_backend_object_p cris_elf_object_p
3035 #define elf_backend_final_write_processing \
3036 cris_elf_final_write_processing
3037 #define bfd_elf32_bfd_print_private_bfd_data \
3038 cris_elf_print_private_bfd_data
3039 #define bfd_elf32_bfd_merge_private_bfd_data \
3040 cris_elf_merge_private_bfd_data
3042 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
3044 #define bfd_elf32_bfd_link_hash_table_create \
3045 elf_cris_link_hash_table_create
3046 #define elf_backend_adjust_dynamic_symbol \
3047 elf_cris_adjust_dynamic_symbol
3048 #define elf_backend_size_dynamic_sections \
3049 elf_cris_size_dynamic_sections
3050 #define elf_backend_finish_dynamic_symbol \
3051 elf_cris_finish_dynamic_symbol
3052 #define elf_backend_finish_dynamic_sections \
3053 elf_cris_finish_dynamic_sections
3054 #define elf_backend_create_dynamic_sections \
3055 _bfd_elf_create_dynamic_sections
3056 #define bfd_elf32_bfd_final_link \
3057 _bfd_elf32_gc_common_final_link
3058 #define elf_backend_hide_symbol elf_cris_hide_symbol
3059 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
3061 #define elf_backend_want_got_plt 1
3062 #define elf_backend_plt_readonly 1
3063 #define elf_backend_want_plt_sym 0
3064 #define elf_backend_got_header_size 12
3065 #define elf_backend_plt_header_size PLT_ENTRY_SIZE
3067 /* Later, we my want to optimize RELA entries into REL entries for dynamic
3068 linking and libraries (if it's a win of any significance). Until then,
3069 take the easy route. */
3070 #define elf_backend_may_use_rel_p 0
3071 #define elf_backend_may_use_rela_p 1
3073 #include "elf32-target.h"
3075 #define INCLUDED_TARGET_FILE
3077 #undef TARGET_LITTLE_SYM
3078 #undef TARGET_LITTLE_NAME
3079 #undef elf_symbol_leading_char
3081 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
3082 #define TARGET_LITTLE_NAME "elf32-us-cris"
3083 #define elf_symbol_leading_char '_'
3085 #include "elf32-target.h"