1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
3 Free Software Foundation, Inc.
4 Contributed by Axis Communications AB.
5 Written by Hans-Peter Nilsson, based on elf32-fr30.c
6 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
32 /* Forward declarations. */
33 static reloc_howto_type * cris_reloc_type_lookup
34 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
36 static void cris_info_to_howto_rela
37 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
39 static bfd_reloc_status_type cris_elf_pcrel_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
42 static bfd_boolean cris_elf_grok_prstatus
43 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
45 static bfd_boolean cris_elf_grok_psinfo
46 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
48 static bfd_boolean cris_elf_relocate_section
49 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
52 static bfd_reloc_status_type cris_final_link_relocate
53 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, bfd_vma));
56 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
58 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
60 static bfd_boolean cris_elf_set_mach_from_flags
61 PARAMS ((bfd *, unsigned long int));
63 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
65 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
66 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
68 struct elf_cris_link_hash_entry;
69 static bfd_boolean elf_cris_discard_excess_dso_dynamics
70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
71 static bfd_boolean elf_cris_discard_excess_program_dynamics
72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
73 static bfd_boolean elf_cris_adjust_gotplt_to_got
74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
75 static bfd_boolean elf_cris_try_fold_plt_to_got
76 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
77 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
78 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
79 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
81 static bfd_boolean elf_cris_adjust_dynamic_symbol
82 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
83 static bfd_boolean cris_elf_check_relocs
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
87 static bfd_boolean elf_cris_size_dynamic_sections
88 PARAMS ((bfd *, struct bfd_link_info *));
89 static bfd_boolean elf_cris_finish_dynamic_symbol
90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
92 static bfd_boolean elf_cris_finish_dynamic_sections
93 PARAMS ((bfd *, struct bfd_link_info *));
94 static void elf_cris_hide_symbol
95 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
96 static enum elf_reloc_type_class elf_cris_reloc_type_class
97 PARAMS ((const Elf_Internal_Rela *));
99 static reloc_howto_type cris_elf_howto_table [] =
101 /* This reloc does nothing. */
102 HOWTO (R_CRIS_NONE, /* type */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
106 FALSE, /* pc_relative */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_CRIS_NONE", /* name */
111 FALSE, /* partial_inplace */
114 FALSE), /* pcrel_offset */
116 /* An 8 bit absolute relocation. */
117 HOWTO (R_CRIS_8, /* type */
119 0, /* size (0 = byte, 1 = short, 2 = long) */
121 FALSE, /* pc_relative */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_CRIS_8", /* name */
126 FALSE, /* partial_inplace */
127 0x0000, /* src_mask */
128 0x00ff, /* dst_mask */
129 FALSE), /* pcrel_offset */
131 /* A 16 bit absolute relocation. */
132 HOWTO (R_CRIS_16, /* type */
134 1, /* size (0 = byte, 1 = short, 2 = long) */
136 FALSE, /* pc_relative */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_CRIS_16", /* name */
141 FALSE, /* partial_inplace */
142 0x00000000, /* src_mask */
143 0x0000ffff, /* dst_mask */
144 FALSE), /* pcrel_offset */
146 /* A 32 bit absolute relocation. */
147 HOWTO (R_CRIS_32, /* type */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
151 FALSE, /* pc_relative */
153 /* We don't want overflow complaints for 64-bit vma builds
154 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
155 32-bit ELF) where sym=0xc0001234.
156 Don't do this for the PIC relocs, as we don't expect to
157 see them with large offsets. */
158 complain_overflow_dont, /* complain_on_overflow */
159 bfd_elf_generic_reloc, /* special_function */
160 "R_CRIS_32", /* name */
161 FALSE, /* partial_inplace */
162 0x00000000, /* src_mask */
163 0xffffffff, /* dst_mask */
164 FALSE), /* pcrel_offset */
166 /* An 8 bit PC-relative relocation. */
167 HOWTO (R_CRIS_8_PCREL, /* type */
169 0, /* size (0 = byte, 1 = short, 2 = long) */
171 TRUE, /* pc_relative */
173 complain_overflow_bitfield, /* complain_on_overflow */
174 cris_elf_pcrel_reloc, /* special_function */
175 "R_CRIS_8_PCREL", /* name */
176 FALSE, /* partial_inplace */
177 0x0000, /* src_mask */
178 0x00ff, /* dst_mask */
179 TRUE), /* pcrel_offset */
181 /* A 16 bit PC-relative relocation. */
182 HOWTO (R_CRIS_16_PCREL, /* type */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
186 TRUE, /* pc_relative */
188 complain_overflow_bitfield, /* complain_on_overflow */
189 cris_elf_pcrel_reloc, /* special_function */
190 "R_CRIS_16_PCREL", /* name */
191 FALSE, /* partial_inplace */
192 0x00000000, /* src_mask */
193 0x0000ffff, /* dst_mask */
194 TRUE), /* pcrel_offset */
196 /* A 32 bit PC-relative relocation. */
197 HOWTO (R_CRIS_32_PCREL, /* type */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
201 TRUE, /* pc_relative */
203 complain_overflow_bitfield, /* complain_on_overflow */
204 cris_elf_pcrel_reloc, /* special_function */
205 "R_CRIS_32_PCREL", /* name */
206 FALSE, /* partial_inplace */
207 0x00000000, /* src_mask */
208 0xffffffff, /* dst_mask */
209 TRUE), /* pcrel_offset */
211 /* GNU extension to record C++ vtable hierarchy. */
212 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_CRIS_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
224 FALSE), /* pcrel_offset */
226 /* GNU extension to record C++ vtable member usage. */
227 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
231 FALSE, /* pc_relative */
233 complain_overflow_dont, /* complain_on_overflow */
234 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
235 "R_CRIS_GNU_VTENTRY", /* name */
236 FALSE, /* partial_inplace */
239 FALSE), /* pcrel_offset */
241 /* This is used only by the dynamic linker. The symbol should exist
242 both in the object being run and in some shared library. The
243 dynamic linker copies the data addressed by the symbol from the
244 shared library into the object, because the object being
245 run has to have the data at some particular address. */
246 HOWTO (R_CRIS_COPY, /* type */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
250 FALSE, /* pc_relative */
252 complain_overflow_bitfield, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_CRIS_COPY", /* name */
255 FALSE, /* partial_inplace */
258 FALSE), /* pcrel_offset */
260 /* Like R_CRIS_32, but used when setting global offset table entries. */
261 HOWTO (R_CRIS_GLOB_DAT, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_GLOB_DAT", /* name */
270 FALSE, /* partial_inplace */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* Marks a procedure linkage table entry for a symbol. */
276 HOWTO (R_CRIS_JUMP_SLOT, /* type */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_CRIS_JUMP_SLOT", /* name */
285 FALSE, /* partial_inplace */
288 FALSE), /* pcrel_offset */
290 /* Used only by the dynamic linker. When the object is run, this
291 longword is set to the load address of the object, plus the
293 HOWTO (R_CRIS_RELATIVE, /* type */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
297 FALSE, /* pc_relative */
299 complain_overflow_bitfield, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_CRIS_RELATIVE", /* name */
302 FALSE, /* partial_inplace */
304 0xffffffff, /* dst_mask */
305 FALSE), /* pcrel_offset */
307 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
308 HOWTO (R_CRIS_16_GOT, /* type */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
312 FALSE, /* pc_relative */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_CRIS_16_GOT", /* name */
317 FALSE, /* partial_inplace */
319 0xffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
322 HOWTO (R_CRIS_32_GOT, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_bitfield, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_CRIS_32_GOT", /* name */
331 FALSE, /* partial_inplace */
333 0xffffffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
337 the GOT table for the symbol. */
338 HOWTO (R_CRIS_16_GOTPLT, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_CRIS_16_GOTPLT", /* name */
347 FALSE, /* partial_inplace */
349 0xffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 HOWTO (R_CRIS_32_GOTPLT, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 FALSE, /* pc_relative */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_CRIS_32_GOTPLT", /* name */
361 FALSE, /* partial_inplace */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
366 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
368 HOWTO (R_CRIS_32_GOTREL, /* type */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
372 FALSE, /* pc_relative */
374 complain_overflow_bitfield, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_CRIS_32_GOTREL", /* name */
377 FALSE, /* partial_inplace */
379 0xffffffff, /* dst_mask */
380 FALSE), /* pcrel_offset */
382 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
383 to create PLT entry for symbol. */
384 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE, /* pc_relative */
390 complain_overflow_bitfield, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_CRIS_32_PLT_GOTREL", /* name */
393 FALSE, /* partial_inplace */
395 0xffffffff, /* dst_mask */
396 FALSE), /* pcrel_offset */
398 /* A 32-bit offset from PC (location after the relocation) + addend to
399 entry for this symbol in PLT and request to create PLT entry for
401 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 TRUE, /* pc_relative */
407 complain_overflow_bitfield, /* complain_on_overflow */
408 cris_elf_pcrel_reloc, /* special_function */
409 "R_CRIS_32_PLT_PCREL", /* name */
410 FALSE, /* partial_inplace */
412 0xffffffff, /* dst_mask */
413 TRUE), /* pcrel_offset */
415 /* We don't handle these in any special manner and cross-format
416 linking is not supported; just recognize them enough to pass them
417 around. FIXME: do the same for most PIC relocs and add sanity
418 tests to actually refuse gracefully to handle these and PIC
419 relocs for cross-format linking. */
420 #define TLSHOWTO32(name) \
421 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
422 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
423 #define TLSHOWTO16X(name, X) \
424 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
425 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
426 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
427 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
429 TLSHOWTO32 (R_CRIS_32_GOT_GD),
430 TLSHOWTO16 (R_CRIS_16_GOT_GD),
431 TLSHOWTO32 (R_CRIS_32_GD),
432 TLSHOWTO32 (R_CRIS_DTP),
433 TLSHOWTO32 (R_CRIS_32_DTPREL),
434 TLSHOWTO16S (R_CRIS_16_DTPREL),
435 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
436 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
437 TLSHOWTO32 (R_CRIS_32_TPREL),
438 TLSHOWTO16S (R_CRIS_16_TPREL),
439 TLSHOWTO32 (R_CRIS_DTPMOD),
440 TLSHOWTO32 (R_CRIS_32_IE)
443 /* Map BFD reloc types to CRIS ELF reloc types. */
445 struct cris_reloc_map
447 bfd_reloc_code_real_type bfd_reloc_val;
448 unsigned int cris_reloc_val;
451 static const struct cris_reloc_map cris_reloc_map [] =
453 { BFD_RELOC_NONE, R_CRIS_NONE },
454 { BFD_RELOC_8, R_CRIS_8 },
455 { BFD_RELOC_16, R_CRIS_16 },
456 { BFD_RELOC_32, R_CRIS_32 },
457 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
458 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
459 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
460 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
461 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
462 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
463 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
464 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
465 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
466 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
467 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
468 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
469 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
470 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
471 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
472 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
473 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
474 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
475 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
476 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
477 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
478 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
479 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
480 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
481 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
482 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
483 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
484 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
487 static reloc_howto_type *
488 cris_reloc_type_lookup (abfd, code)
489 bfd * abfd ATTRIBUTE_UNUSED;
490 bfd_reloc_code_real_type code;
494 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
495 if (cris_reloc_map [i].bfd_reloc_val == code)
496 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
501 static reloc_howto_type *
502 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
507 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
509 if (cris_elf_howto_table[i].name != NULL
510 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
511 return &cris_elf_howto_table[i];
516 /* Set the howto pointer for an CRIS ELF reloc. */
519 cris_info_to_howto_rela (abfd, cache_ptr, dst)
520 bfd * abfd ATTRIBUTE_UNUSED;
522 Elf_Internal_Rela * dst;
524 enum elf_cris_reloc_type r_type;
526 r_type = ELF32_R_TYPE (dst->r_info);
527 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
528 cache_ptr->howto = & cris_elf_howto_table [r_type];
531 bfd_reloc_status_type
532 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
533 output_bfd, error_message)
534 bfd *abfd ATTRIBUTE_UNUSED;
535 arelent *reloc_entry;
537 PTR data ATTRIBUTE_UNUSED;
538 asection *input_section;
540 char **error_message ATTRIBUTE_UNUSED;
542 /* By default (using only bfd_elf_generic_reloc when linking to
543 non-ELF formats) PC-relative relocs are relative to the beginning
544 of the reloc. CRIS PC-relative relocs are relative to the position
545 *after* the reloc because that's what pre-CRISv32 PC points to
546 after reading an insn field with that reloc. (For CRISv32, PC is
547 actually relative to the start of the insn, but we keep the old
548 definition.) Still, we use as much generic machinery as we can.
550 Only adjust when doing a final link. */
551 if (output_bfd == (bfd *) NULL)
552 reloc_entry->addend -= 1 << reloc_entry->howto->size;
555 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
556 input_section, output_bfd, error_message);
559 /* Support for core dump NOTE sections.
560 The slightly unintuitive code layout is an attempt to keep at least
561 some similarities with other ports, hoping to simplify general
562 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
565 cris_elf_grok_prstatus (abfd, note)
567 Elf_Internal_Note *note;
572 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
573 switch (note->descsz)
578 case 202: /* Linux/CRISv32 */
580 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
583 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
592 switch (note->descsz)
597 case 214: /* Linux/CRIS */
599 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
602 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
611 /* Make a ".reg/999" section. */
612 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
613 size, note->descpos + offset);
617 cris_elf_grok_psinfo (abfd, note)
619 Elf_Internal_Note *note;
621 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
622 switch (note->descsz)
627 case 124: /* Linux/CRISv32 elf_prpsinfo */
628 elf_tdata (abfd)->core_program
629 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
630 elf_tdata (abfd)->core_command
631 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
634 switch (note->descsz)
639 case 124: /* Linux/CRIS elf_prpsinfo */
640 elf_tdata (abfd)->core_program
641 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
642 elf_tdata (abfd)->core_command
643 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
646 /* Note that for some reason, a spurious space is tacked
647 onto the end of the args in some (at least one anyway)
648 implementations, so strip it off if it exists. */
651 char *command = elf_tdata (abfd)->core_command;
652 int n = strlen (command);
654 if (0 < n && command[n - 1] == ' ')
655 command[n - 1] = '\0';
661 /* The name of the dynamic interpreter. This is put in the .interp
664 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
666 /* The size in bytes of an entry in the procedure linkage table. */
668 #define PLT_ENTRY_SIZE 20
669 #define PLT_ENTRY_SIZE_V32 26
671 /* The first entry in an absolute procedure linkage table looks like this. */
673 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
676 0x7e, 0x7e, /* push mof. */
677 0x7f, 0x0d, /* (dip [pc+]) */
678 0, 0, 0, 0, /* Replaced with address of .got + 4. */
679 0x30, 0x7a, /* move [...],mof */
680 0x7f, 0x0d, /* (dip [pc+]) */
681 0, 0, 0, 0, /* Replaced with address of .got + 8. */
682 0x30, 0x09 /* jump [...] */
685 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
687 0x84, 0xe2, /* subq 4,$sp */
688 0x6f, 0xfe, /* move.d 0,$acr */
689 0, 0, 0, 0, /* Replaced by address of .got + 4. */
690 0x7e, 0x7a, /* move $mof,[$sp] */
691 0x3f, 0x7a, /* move [$acr],$mof */
692 0x04, 0xf2, /* addq 4,acr */
693 0x6f, 0xfa, /* move.d [$acr],$acr */
694 0xbf, 0x09, /* jump $acr */
695 0xb0, 0x05, /* nop */
696 0, 0 /* Pad out to 26 bytes. */
699 /* Subsequent entries in an absolute procedure linkage table look like
702 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
704 0x7f, 0x0d, /* (dip [pc+]) */
705 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
706 0x30, 0x09, /* jump [...] */
707 0x3f, 0x7e, /* move [pc+],mof */
708 0, 0, 0, 0, /* Replaced with offset into relocation table. */
709 0x2f, 0xfe, /* add.d [pc+],pc */
711 0xff, 0xff /* Replaced with offset to start of .plt. */
714 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
716 0x6f, 0xfe, /* move.d 0,$acr */
717 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
718 0x6f, 0xfa, /* move.d [$acr],$acr */
719 0xbf, 0x09, /* jump $acr */
720 0xb0, 0x05, /* nop */
721 0x3f, 0x7e, /* move 0,mof */
722 0, 0, 0, 0, /* Replaced with offset into relocation table. */
723 0xbf, 0x0e, /* ba start_of_plt0_entry */
724 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
728 /* The first entry in a PIC procedure linkage table looks like this. */
730 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
732 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
733 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
734 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
735 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
738 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
740 0x84, 0xe2, /* subq 4,$sp */
741 0x04, 0x01, /* addoq 4,$r0,$acr */
742 0x7e, 0x7a, /* move $mof,[$sp] */
743 0x3f, 0x7a, /* move [$acr],$mof */
744 0x04, 0xf2, /* addq 4,$acr */
745 0x6f, 0xfa, /* move.d [$acr],$acr */
746 0xbf, 0x09, /* jump $acr */
747 0xb0, 0x05, /* nop */
748 0, 0, /* Pad out to 26 bytes. */
753 /* Subsequent entries in a PIC procedure linkage table look like this. */
755 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
757 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
758 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
759 0x30, 0x09, /* jump [...] */
760 0x3f, 0x7e, /* move [pc+],mof */
761 0, 0, 0, 0, /* Replaced with offset into relocation table. */
762 0x2f, 0xfe, /* add.d [pc+],pc */
763 0xec, 0xff, /* Replaced with offset to start of .plt. */
767 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
769 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
770 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
771 0x6f, 0xfa, /* move.d [$acr],$acr */
772 0xbf, 0x09, /* jump $acr */
773 0xb0, 0x05, /* nop */
774 0x3f, 0x7e, /* move relocoffs,$mof */
775 0, 0, 0, 0, /* Replaced with offset into relocation table. */
776 0xbf, 0x0e, /* ba start_of_plt */
777 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
781 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
782 (and most other PIC/shlib stuff). Check that we don't drift away
785 The CRIS linker, like the m68k and i386 linkers (and probably the rest
786 too) needs to keep track of the number of relocs that it decides to
787 copy in check_relocs for each symbol. This is so that it can discard
788 PC relative relocs if it doesn't need them when linking with
789 -Bsymbolic. We store the information in a field extending the regular
790 ELF linker hash table. */
792 /* This structure keeps track of the number of PC relative relocs we have
793 copied for a given symbol. */
795 struct elf_cris_pcrel_relocs_copied
798 struct elf_cris_pcrel_relocs_copied *next;
800 /* A section in dynobj. */
803 /* Number of relocs copied in this section. */
806 /* Example of reloc being copied, for message. */
807 enum elf_cris_reloc_type r_type;
810 /* CRIS ELF linker hash entry. */
812 struct elf_cris_link_hash_entry
814 struct elf_link_hash_entry root;
816 /* Number of PC relative relocs copied for this symbol. */
817 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
819 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
820 both a general GOT and a PLT-specific GOT entry for the same symbol,
821 when it is referenced both as a function and as a function pointer.
823 Number of GOTPLT references for a function. */
824 bfd_signed_vma gotplt_refcount;
826 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
827 (zero is never used as an index). FIXME: We should be able to fold
828 this with gotplt_refcount in a union, like the got and plt unions in
829 elf_link_hash_entry. */
830 bfd_size_type gotplt_offset;
832 /* The root.got.refcount is the sum of the regular reference counts
833 (this) and those members below. We have to keep a separate count
834 to track when we've found the first (or last) reference to a
835 regular got entry. The offset is in root.got.offset. */
836 bfd_signed_vma reg_got_refcount;
838 /* Similar to the above, the number of reloc references to this
839 symbols that need a R_CRIS_32_TPREL slot. The offset is in
840 root.got.offset, because this and .dtp_refcount can't validly
841 happen when there's also a regular GOT entry; that's invalid
842 input for which an error is emitted. */
843 bfd_signed_vma tprel_refcount;
845 /* Similar to the above, the number of reloc references to this
846 symbols that need a R_CRIS_DTP slot. The offset is in
847 root.got.offset; plus 4 if .tprel_refcount > 0. */
848 bfd_signed_vma dtp_refcount;
851 /* The local_got_refcounts and local_got_offsets are a multiple of
852 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
853 refcount for GOT itself, see code), with the summary / group offset
854 for local symbols located at offset N, reference counts for
855 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
856 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
859 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
860 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
861 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
862 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
864 /* CRIS ELF linker hash table. */
866 struct elf_cris_link_hash_table
868 struct elf_link_hash_table root;
870 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
871 since we try and avoid creating GOTPLT:s when there's already a GOT.
872 Instead, we keep and update the next available index here. */
873 bfd_size_type next_gotplt_entry;
875 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
876 been seen for any input; if != 0, then the constant-offset
877 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
878 negative at relocation, so that we don't need an extra flag for
879 when the reloc is output. */
880 bfd_signed_vma dtpmod_refcount;
883 /* Traverse a CRIS ELF linker hash table. */
885 #define elf_cris_link_hash_traverse(table, func, info) \
886 (elf_link_hash_traverse \
888 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
891 /* Get the CRIS ELF linker hash table from a link_info structure. */
893 #define elf_cris_hash_table(p) \
894 ((struct elf_cris_link_hash_table *) (p)->hash)
896 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
897 "parent class"). The .root reference is just a simple type
898 check on the argument. */
900 #define elf_cris_hash_entry(p) \
901 ((struct elf_cris_link_hash_entry *) (&(p)->root))
903 /* Create an entry in a CRIS ELF linker hash table. */
905 static struct bfd_hash_entry *
906 elf_cris_link_hash_newfunc (entry, table, string)
907 struct bfd_hash_entry *entry;
908 struct bfd_hash_table *table;
911 struct elf_cris_link_hash_entry *ret =
912 (struct elf_cris_link_hash_entry *) entry;
914 /* Allocate the structure if it has not already been allocated by a
916 if (ret == (struct elf_cris_link_hash_entry *) NULL)
917 ret = ((struct elf_cris_link_hash_entry *)
918 bfd_hash_allocate (table,
919 sizeof (struct elf_cris_link_hash_entry)));
920 if (ret == (struct elf_cris_link_hash_entry *) NULL)
921 return (struct bfd_hash_entry *) ret;
923 /* Call the allocation method of the superclass. */
924 ret = ((struct elf_cris_link_hash_entry *)
925 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
927 if (ret != (struct elf_cris_link_hash_entry *) NULL)
929 ret->pcrel_relocs_copied = NULL;
930 ret->gotplt_refcount = 0;
931 ret->gotplt_offset = 0;
932 ret->dtp_refcount = 0;
933 ret->tprel_refcount = 0;
934 ret->reg_got_refcount = 0;
937 return (struct bfd_hash_entry *) ret;
940 /* Create a CRIS ELF linker hash table. */
942 static struct bfd_link_hash_table *
943 elf_cris_link_hash_table_create (abfd)
946 struct elf_cris_link_hash_table *ret;
947 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
949 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
950 if (ret == (struct elf_cris_link_hash_table *) NULL)
953 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
954 elf_cris_link_hash_newfunc,
955 sizeof (struct elf_cris_link_hash_entry)))
961 /* Initialize to skip over the first three entries in the gotplt; they
962 are used for run-time symbol evaluation. */
963 ret->next_gotplt_entry = 12;
965 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
966 ret->dtpmod_refcount = 0;
968 return &ret->root.root;
971 /* Perform a single relocation. By default we use the standard BFD
972 routines, with a few tweaks. */
974 static bfd_reloc_status_type
975 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
977 reloc_howto_type * howto;
979 asection * input_section;
981 Elf_Internal_Rela * rel;
984 bfd_reloc_status_type r;
985 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
987 /* PC-relative relocations are relative to the position *after*
988 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
989 not a single byte, since PC must be 16-bit-aligned. */
992 /* Check that the 16-bit GOT relocs are positive. */
993 case R_CRIS_16_GOTPLT:
995 if ((bfd_signed_vma) relocation < 0)
996 return bfd_reloc_overflow;
999 case R_CRIS_32_PLT_PCREL:
1000 case R_CRIS_32_PCREL:
1003 case R_CRIS_8_PCREL:
1004 case R_CRIS_16_PCREL:
1012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1013 contents, rel->r_offset,
1014 relocation, rel->r_addend);
1019 /* The number of errors left before we stop outputting reloc-specific
1020 explanatory messages. By coincidence, this works nicely together
1021 with the default number of messages you'll get from LD about
1022 "relocation truncated to fit" messages before you get an
1023 "additional relocation overflows omitted from the output". */
1024 static int additional_relocation_error_msg_count = 10;
1026 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1027 copied, for further comments. */
1030 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1031 contents, relocs, local_syms, local_sections)
1032 bfd *output_bfd ATTRIBUTE_UNUSED;
1033 struct bfd_link_info *info;
1035 asection *input_section;
1037 Elf_Internal_Rela *relocs;
1038 Elf_Internal_Sym *local_syms;
1039 asection **local_sections;
1042 Elf_Internal_Shdr *symtab_hdr;
1043 struct elf_link_hash_entry **sym_hashes;
1044 bfd_vma *local_got_offsets;
1048 Elf_Internal_Rela *rel;
1049 Elf_Internal_Rela *relend;
1052 dynobj = elf_hash_table (info)->dynobj;
1053 local_got_offsets = elf_local_got_offsets (input_bfd);
1054 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1055 sym_hashes = elf_sym_hashes (input_bfd);
1056 relend = relocs + input_section->reloc_count;
1065 splt = bfd_get_section_by_name (dynobj, ".plt");
1066 sgot = bfd_get_section_by_name (dynobj, ".got");
1069 for (rel = relocs; rel < relend; rel ++)
1071 reloc_howto_type *howto;
1072 unsigned long r_symndx;
1073 Elf_Internal_Sym *sym;
1075 struct elf_link_hash_entry *h;
1077 bfd_reloc_status_type r;
1078 const char *symname = NULL;
1079 enum elf_cris_reloc_type r_type;
1081 r_type = ELF32_R_TYPE (rel->r_info);
1083 if ( r_type == R_CRIS_GNU_VTINHERIT
1084 || r_type == R_CRIS_GNU_VTENTRY)
1087 r_symndx = ELF32_R_SYM (rel->r_info);
1088 howto = cris_elf_howto_table + r_type;
1093 if (r_symndx < symtab_hdr->sh_info)
1095 sym = local_syms + r_symndx;
1096 sec = local_sections [r_symndx];
1097 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1099 symname = (bfd_elf_string_from_elf_section
1100 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1101 if (symname == NULL)
1102 symname = bfd_section_name (input_bfd, sec);
1107 bfd_boolean unresolved_reloc;
1109 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1110 r_symndx, symtab_hdr, sym_hashes,
1112 unresolved_reloc, warned);
1114 symname = h->root.root.string;
1116 if (unresolved_reloc
1117 /* Perhaps we should detect the cases that
1118 sec->output_section is expected to be NULL like i386 and
1119 m68k, but apparently (and according to elfxx-ia64.c) all
1120 valid cases are where the symbol is defined in a shared
1121 object which we link dynamically against. This includes
1122 PLT relocs for which we've created a PLT entry and other
1123 relocs for which we're prepared to create dynamic
1126 For now, new situations cause us to just err when
1127 sec->output_offset is NULL but the object with the symbol
1128 is *not* dynamically linked against. Thus this will
1129 automatically remind us so we can see if there are other
1130 valid cases we need to revisit. */
1131 && (sec->owner->flags & DYNAMIC) != 0)
1134 else if (h->root.type == bfd_link_hash_defined
1135 || h->root.type == bfd_link_hash_defweak)
1137 /* Here follow the cases where the relocation value must
1138 be zero (or when further handling is simplified when
1139 zero). I can't claim to understand the various
1140 conditions and they weren't described in the files
1141 where I copied them from (elf32-m68k.c and
1142 elf32-i386.c), but let's mention examples of where
1143 they happen. FIXME: Perhaps define and use a
1144 dynamic_symbol_p function like ia64.
1146 - When creating a shared library, we can have an
1147 ordinary relocation for a symbol defined in a shared
1148 library (perhaps the one we create). We then make
1149 the relocation value zero, as the value seen now will
1150 be added into the relocation addend in this shared
1151 library, but must be handled only at dynamic-link
1152 time. FIXME: Not sure this example covers the
1153 h->elf_link_hash_flags test, though it's there in
1156 && ((! info->symbolic && h->dynindx != -1)
1158 && (input_section->flags & SEC_ALLOC) != 0
1159 && (r_type == R_CRIS_8
1160 || r_type == R_CRIS_16
1161 || r_type == R_CRIS_32
1162 || r_type == R_CRIS_8_PCREL
1163 || r_type == R_CRIS_16_PCREL
1164 || r_type == R_CRIS_32_PCREL))
1166 else if (!info->relocatable && unresolved_reloc)
1169 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1172 cris_elf_howto_table[r_type].name,
1174 bfd_set_error (bfd_error_bad_value);
1180 if (sec != NULL && elf_discarded_section (sec))
1182 /* For relocs against symbols from removed linkonce sections,
1183 or sections discarded by a linker script, we just want the
1184 section contents zeroed. Avoid any special processing. */
1185 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1191 if (info->relocatable)
1196 case R_CRIS_16_GOTPLT:
1197 case R_CRIS_32_GOTPLT:
1198 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1199 but we require a PLT, and the PLT handling will take care of
1200 filling in the PLT-specific GOT entry. For the GOT offset,
1201 calculate it as we do when filling it in for the .got.plt
1202 section. If we don't have a PLT, punt to GOT handling. */
1204 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1207 = bfd_get_section_by_name (dynobj, ".got.plt");
1210 BFD_ASSERT (h->dynindx != -1);
1211 BFD_ASSERT (sgotplt != NULL);
1214 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1216 relocation = got_offset;
1220 /* We didn't make a PLT entry for this symbol. Maybe everything is
1221 folded into the GOT. Other than folding, this happens when
1222 statically linking PIC code, or when using -Bsymbolic. Check
1223 that we instead have a GOT entry as done for us by
1224 elf_cris_adjust_dynamic_symbol, and drop through into the
1225 ordinary GOT cases. This must not happen for the
1226 executable, because any reference it does to a function
1227 that is satisfied by a DSO must generate a PLT. We assume
1228 these call-specific relocs don't address non-functions. */
1230 && (h->got.offset == (bfd_vma) -1
1234 && h->root.type == bfd_link_hash_undefweak)))))
1236 (*_bfd_error_handler)
1237 ((h->got.offset == (bfd_vma) -1)
1238 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1239 " against symbol `%s'")
1240 : _("%B, section %A: No PLT for relocation %s"
1241 " against symbol `%s'"),
1244 cris_elf_howto_table[r_type].name,
1245 (symname != NULL && symname[0] != '\0'
1246 ? symname : _("[whose name is lost]")));
1248 /* FIXME: Perhaps blaming input is not the right thing to
1249 do; this is probably an internal error. But it is true
1250 that we didn't like that particular input. */
1251 bfd_set_error (bfd_error_bad_value);
1256 /* The size of the actual relocation is not used here; we only
1257 fill in the GOT table here. */
1263 /* Note that despite using RELA relocations, the .got contents
1264 is always filled in with the link-relative relocation
1265 value; the addend. */
1269 off = h->got.offset;
1270 BFD_ASSERT (off != (bfd_vma) -1);
1272 if (!elf_hash_table (info)->dynamic_sections_created
1275 || h->type == STT_FUNC
1278 && (info->symbolic || h->dynindx == -1)
1281 /* This wasn't checked above for ! info->shared, but
1282 must hold there if we get here; the symbol must
1283 be defined in the regular program or be undefweak
1284 or be a function or otherwise need a PLT. */
1285 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1288 || h->type == STT_FUNC
1290 || h->root.type == bfd_link_hash_undefweak);
1292 /* This is actually a static link, or it is a
1293 -Bsymbolic link and the symbol is defined locally,
1294 or is undefweak, or the symbol was forced to be
1295 local because of a version file, or we're not
1296 creating a dynamic object. We must initialize this
1297 entry in the global offset table. Since the offset
1298 must always be a multiple of 4, we use the least
1299 significant bit to record whether we have
1300 initialized it already.
1302 If this GOT entry should be runtime-initialized, we
1303 will create a .rela.got relocation entry to
1304 initialize the value. This is done in the
1305 finish_dynamic_symbol routine. */
1310 bfd_put_32 (output_bfd, relocation,
1311 sgot->contents + off);
1318 BFD_ASSERT (local_got_offsets != NULL
1319 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1321 off = local_got_offsets[r_symndx];
1323 /* The offset must always be a multiple of 4. We use
1324 the least significant bit to record whether we have
1325 already generated the necessary reloc. */
1330 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1334 Elf_Internal_Rela outrel;
1337 if (srelgot == NULL)
1339 = bfd_get_section_by_name (dynobj, ".rela.got");
1340 BFD_ASSERT (srelgot != NULL);
1342 outrel.r_offset = (sgot->output_section->vma
1343 + sgot->output_offset
1345 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1346 outrel.r_addend = relocation;
1347 loc = srelgot->contents;
1348 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1349 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1352 local_got_offsets[r_symndx] |= 1;
1356 relocation = sgot->output_offset + off;
1357 if (rel->r_addend != 0)
1359 /* We can't do anything for a relocation which is against
1360 a symbol *plus offset*. GOT holds relocations for
1361 symbols. Make this an error; the compiler isn't
1362 allowed to pass us these kinds of things. */
1364 (*_bfd_error_handler)
1365 (_("%B, section %A: relocation %s with non-zero addend %d"
1366 " against local symbol"),
1369 cris_elf_howto_table[r_type].name,
1372 (*_bfd_error_handler)
1373 (_("%B, section %A: relocation %s with non-zero addend %d"
1374 " against symbol `%s'"),
1377 cris_elf_howto_table[r_type].name,
1379 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1381 bfd_set_error (bfd_error_bad_value);
1387 case R_CRIS_32_GOTREL:
1388 /* This relocation must only be performed against local symbols.
1389 It's also ok when we link a program and the symbol is either
1390 defined in an ordinary (non-DSO) object or is undefined weak. */
1392 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1396 && h->root.type == bfd_link_hash_undefweak))))
1398 (*_bfd_error_handler)
1399 (_("%B, section %A: relocation %s is"
1400 " not allowed for global symbol: `%s'"),
1403 cris_elf_howto_table[r_type].name,
1405 bfd_set_error (bfd_error_bad_value);
1409 /* This can happen if we get a link error with the input ELF
1410 variant mismatching the output variant. Emit an error so
1411 it's noticed if it happens elsewhere. */
1414 (*_bfd_error_handler)
1415 (_("%B, section %A: relocation %s with no GOT created"),
1418 cris_elf_howto_table[r_type].name);
1419 bfd_set_error (bfd_error_bad_value);
1423 /* This relocation is like a PC-relative one, except the
1424 reference point is the location of GOT. Note that
1425 sgot->output_offset is not involved in this calculation. We
1426 always want the start of entire .got section, not the
1427 position after the reserved header. */
1428 relocation -= sgot->output_section->vma;
1431 case R_CRIS_32_PLT_PCREL:
1432 /* Relocation is to the entry for this symbol in the
1433 procedure linkage table. */
1435 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1436 without using the procedure linkage table. */
1437 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1440 if (h->plt.offset == (bfd_vma) -1
1443 /* We didn't make a PLT entry for this symbol. This
1444 happens when statically linking PIC code, or when
1445 using -Bsymbolic. */
1449 relocation = (splt->output_section->vma
1450 + splt->output_offset
1454 case R_CRIS_32_PLT_GOTREL:
1455 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1456 start of the .got section. See also comment at
1458 relocation -= sgot->output_section->vma;
1460 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1461 without using the procedure linkage table. */
1462 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1465 if (h->plt.offset == (bfd_vma) -1
1468 /* We didn't make a PLT entry for this symbol. This
1469 happens when statically linking PIC code, or when
1470 using -Bsymbolic. */
1474 relocation = (splt->output_section->vma
1475 + splt->output_offset
1477 - sgot->output_section->vma);
1480 case R_CRIS_8_PCREL:
1481 case R_CRIS_16_PCREL:
1482 case R_CRIS_32_PCREL:
1483 /* If the symbol was local, we need no shlib-specific handling. */
1484 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1485 || h->dynindx == -1)
1494 && (input_section->flags & SEC_ALLOC) != 0
1495 && ((r_type != R_CRIS_8_PCREL
1496 && r_type != R_CRIS_16_PCREL
1497 && r_type != R_CRIS_32_PCREL)
1499 || (h != NULL && !h->def_regular))))
1501 Elf_Internal_Rela outrel;
1503 bfd_boolean skip, relocate;
1505 /* When generating a shared object, these relocations
1506 are copied into the output file to be resolved at run
1511 sreloc = _bfd_elf_get_dynamic_reloc_section
1512 (input_bfd, input_section, /*rela?*/ TRUE);
1513 /* The section should have been created in cris_elf_check_relocs,
1514 but that function will not be called for objects which fail in
1515 cris_elf_merge_private_bfd_data. */
1518 bfd_set_error (bfd_error_bad_value);
1527 _bfd_elf_section_offset (output_bfd, info, input_section,
1529 if (outrel.r_offset == (bfd_vma) -1)
1531 else if (outrel.r_offset == (bfd_vma) -2
1532 /* For now, undefined weak symbols with non-default
1533 visibility (yielding 0), like exception info for
1534 discarded sections, will get a R_CRIS_NONE
1535 relocation rather than no relocation, because we
1536 notice too late that the symbol doesn't need a
1539 && h->root.type == bfd_link_hash_undefweak
1540 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1541 skip = TRUE, relocate = TRUE;
1542 outrel.r_offset += (input_section->output_section->vma
1543 + input_section->output_offset);
1546 memset (&outrel, 0, sizeof outrel);
1547 /* h->dynindx may be -1 if the symbol was marked to
1550 && ((! info->symbolic && h->dynindx != -1)
1551 || !h->def_regular))
1553 BFD_ASSERT (h->dynindx != -1);
1554 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1555 outrel.r_addend = relocation + rel->r_addend;
1559 outrel.r_addend = relocation + rel->r_addend;
1561 if (r_type == R_CRIS_32)
1564 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1570 if (bfd_is_abs_section (sec))
1572 else if (sec == NULL || sec->owner == NULL)
1574 bfd_set_error (bfd_error_bad_value);
1581 /* We are turning this relocation into one
1582 against a section symbol. It would be
1583 proper to subtract the symbol's value,
1584 osec->vma, from the emitted reloc addend,
1585 but ld.so expects buggy relocs. */
1586 osec = sec->output_section;
1587 indx = elf_section_data (osec)->dynindx;
1590 struct elf_cris_link_hash_table *htab;
1591 htab = elf_cris_hash_table (info);
1592 osec = htab->root.text_index_section;
1593 indx = elf_section_data (osec)->dynindx;
1595 BFD_ASSERT (indx != 0);
1598 outrel.r_info = ELF32_R_INFO (indx, r_type);
1602 loc = sreloc->contents;
1603 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1604 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1606 /* This reloc will be computed at runtime, so there's no
1607 need to do anything now, except for R_CRIS_32 relocations
1608 that have been turned into R_CRIS_RELATIVE. */
1615 case R_CRIS_16_DTPREL:
1616 case R_CRIS_32_DTPREL:
1617 /* This relocation must only be performed against local
1618 symbols. It's also ok when we link a program and the
1619 symbol is defined in an ordinary (non-DSO) object (if
1620 it's undefined there, we've already seen an error). */
1622 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1625 && h->root.type != bfd_link_hash_undefined)))
1627 (*_bfd_error_handler)
1628 ((h->root.type == bfd_link_hash_undefined)
1629 /* We shouldn't get here for GCC-emitted code. */
1630 ? _("%B, section %A: relocation %s has an undefined"
1631 " reference to `%s', perhaps a declaration mixup?")
1632 : ("%B, section %A: relocation %s is"
1633 " not allowed for `%s', a global symbol with default"
1634 " visibility, perhaps a declaration mixup?"),
1637 cris_elf_howto_table[r_type].name,
1638 symname != NULL && symname[0] != '\0'
1639 ? symname : _("[whose name is lost]"));
1640 bfd_set_error (bfd_error_bad_value);
1644 BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1646 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1647 already done so. Note that we do this in .got.plt, not
1648 in .got, as .got.plt contains the first part, still the
1649 reloc is against .got, because the linker script directs
1650 (is required to direct) them both into .got. */
1651 if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1653 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1654 BFD_ASSERT (sgotplt != NULL);
1658 Elf_Internal_Rela outrel;
1661 if (srelgot == NULL)
1662 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1663 BFD_ASSERT (srelgot != NULL);
1664 loc = srelgot->contents;
1665 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1667 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1668 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1669 outrel.r_offset = (sgotplt->output_section->vma
1670 + sgotplt->output_offset
1672 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1673 outrel.r_addend = 0;
1674 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1678 /* For an executable, the GOT entry contents is known. */
1679 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1680 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1683 /* Reverse the sign to mark that we've emitted the
1684 required GOT entry. */
1685 elf_cris_hash_table (info)->dtpmod_refcount
1686 = -elf_cris_hash_table (info)->dtpmod_refcount;
1689 /* The thread-based offset to the local symbol is the
1691 relocation -= elf_hash_table (info)->tls_sec == NULL
1692 ? 0 : elf_hash_table (info)->tls_sec->vma;
1698 bfd_set_error (bfd_error_invalid_operation);
1700 /* We've already informed in cris_elf_check_relocs that
1701 this is an error. */
1706 case R_CRIS_16_GOT_GD:
1707 case R_CRIS_32_GOT_GD:
1708 if (rel->r_addend != 0)
1710 /* We can't do anything for a relocation which is against a
1711 symbol *plus offset*. The GOT holds relocations for
1712 symbols. Make this an error; the compiler isn't allowed
1713 to pass us these kinds of things. */
1714 (*_bfd_error_handler)
1715 (_("%B, section %A: relocation %s with non-zero addend %d"
1716 " against symbol `%s'"),
1719 cris_elf_howto_table[r_type].name,
1721 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1723 bfd_set_error (bfd_error_bad_value);
1727 if (!info->shared && (h == NULL || h->def_regular))
1729 /* Known contents of the GOT. */
1732 /* The symbol is defined in the program, so just write
1733 (1, -prog_tls_size+known_tpoffset) into the GOT. */
1734 relocation -= elf_hash_table (info)->tls_sec->vma;
1735 relocation -= elf_hash_table (info)->tls_sec->size;
1739 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1740 ? h->got.offset + 4 : h->got.offset;
1744 off = local_got_offsets[r_symndx];
1745 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1749 /* We use bit 1 of the offset as a flag for GOT entry with
1750 the R_CRIS_DTP reloc, setting it when we've emitted the
1751 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1760 local_got_offsets[r_symndx] |= 2;
1762 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1763 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1768 relocation = sgot->output_offset + off
1769 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1773 /* Not all parts of the GOT entry are known; emit a real
1778 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1779 ? h->got.offset + 4 : h->got.offset;
1782 off = local_got_offsets[r_symndx];
1783 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1787 /* See above re bit 1 and bit 0 usage. */
1790 Elf_Internal_Rela outrel;
1798 local_got_offsets[r_symndx] |= 2;
1800 /* Clear the target contents of the GOT (just as a
1801 gesture; it's already cleared on allocation): this
1802 relocation is not like the other dynrelocs. */
1803 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1804 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1806 if (srelgot == NULL)
1807 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1808 BFD_ASSERT (srelgot != NULL);
1810 if (h != NULL && h->dynindx != -1)
1812 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1817 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1819 /* NULL if we had an error. */
1820 relocation -= elf_hash_table (info)->tls_sec == NULL
1821 ? 0 : elf_hash_table (info)->tls_sec->vma;
1824 outrel.r_offset = (sgot->output_section->vma
1825 + sgot->output_offset
1827 outrel.r_addend = relocation;
1828 loc = srelgot->contents;
1829 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1831 /* NULL if we had an error. */
1832 if (srelgot->contents != NULL)
1833 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1838 relocation = sgot->output_offset + off
1839 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1842 /* The GOT-relative offset to the GOT entry is the
1843 relocation, or for R_CRIS_32_GD, the actual address of
1850 bfd_set_error (bfd_error_invalid_operation);
1852 /* We've already informed in cris_elf_check_relocs that
1853 this is an error. */
1858 case R_CRIS_32_GOT_TPREL:
1859 case R_CRIS_16_GOT_TPREL:
1860 if (rel->r_addend != 0)
1862 /* We can't do anything for a relocation which is
1863 against a symbol *plus offset*. GOT holds
1864 relocations for symbols. Make this an error; the
1865 compiler isn't allowed to pass us these kinds of
1867 (*_bfd_error_handler)
1868 (_("%B, section %A: relocation %s with non-zero addend %d"
1869 " against symbol `%s'"),
1872 cris_elf_howto_table[r_type].name,
1874 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1875 bfd_set_error (bfd_error_bad_value);
1879 if (!info->shared && (h == NULL || h->def_regular))
1881 /* Known contents of the GOT. */
1884 /* The symbol is defined in the program, so just write
1885 the -prog_tls_size+known_tpoffset into the GOT. */
1886 relocation -= elf_hash_table (info)->tls_sec->vma;
1887 relocation -= elf_hash_table (info)->tls_sec->size;
1890 off = h->got.offset;
1892 off = local_got_offsets[r_symndx];
1894 /* Bit 0 is used to mark whether we've emitted the required
1895 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1896 is used similarly for R_CRIS_DTP, see above. */
1904 local_got_offsets[r_symndx] |= 1;
1906 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1911 relocation = sgot->output_offset + off
1912 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1916 /* Emit a real relocation. */
1920 off = h->got.offset;
1922 off = local_got_offsets[r_symndx];
1924 /* See above re usage of bit 0 and 1. */
1927 Elf_Internal_Rela outrel;
1935 local_got_offsets[r_symndx] |= 1;
1937 if (srelgot == NULL)
1938 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1939 BFD_ASSERT (srelgot != NULL);
1941 if (h != NULL && h->dynindx != -1)
1943 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1948 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1950 /* NULL if we had an error. */
1951 relocation -= elf_hash_table (info)->tls_sec == NULL
1952 ? 0 : elf_hash_table (info)->tls_sec->vma;
1955 /* Just "define" the initial contents in some
1956 semi-logical way. */
1957 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1959 outrel.r_offset = (sgot->output_section->vma
1960 + sgot->output_offset
1962 outrel.r_addend = relocation;
1963 loc = srelgot->contents;
1964 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1965 /* NULL if we had an error. */
1966 if (srelgot->contents != NULL)
1967 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1972 relocation = sgot->output_offset + off
1973 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1976 /* The GOT-relative offset to the GOT entry is the relocation,
1977 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1980 case R_CRIS_16_TPREL:
1981 case R_CRIS_32_TPREL:
1982 /* This relocation must only be performed against symbols
1983 defined in an ordinary (non-DSO) object. */
1986 bfd_set_error (bfd_error_invalid_operation);
1988 /* We've already informed in cris_elf_check_relocs that
1989 this is an error. */
1994 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1996 /* If it's undefined, then an error message has already
1998 && h->root.type != bfd_link_hash_undefined)
2000 (*_bfd_error_handler)
2001 (_("%B, section %A: relocation %s is"
2002 " not allowed for symbol: `%s'"
2003 " which is defined outside the program,"
2004 " perhaps a declaration mixup?"),
2007 cris_elf_howto_table[r_type].name,
2009 bfd_set_error (bfd_error_bad_value);
2013 /* NULL if we had an error. */
2014 relocation -= elf_hash_table (info)->tls_sec == NULL
2016 : (elf_hash_table (info)->tls_sec->vma
2017 + elf_hash_table (info)->tls_sec->size);
2019 /* The TLS-relative offset is the relocation. */
2027 r = cris_final_link_relocate (howto, input_bfd, input_section,
2028 contents, rel, relocation);
2030 if (r != bfd_reloc_ok)
2032 const char * msg = (const char *) NULL;
2036 case bfd_reloc_overflow:
2037 r = info->callbacks->reloc_overflow
2038 (info, (h ? &h->root : NULL), symname, howto->name,
2039 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2040 if (additional_relocation_error_msg_count > 0)
2042 additional_relocation_error_msg_count--;
2045 case R_CRIS_16_GOTPLT:
2048 /* Not just TLS is involved here, so we make
2049 generation and message depend on -fPIC/-fpic
2051 case R_CRIS_16_GOT_TPREL:
2052 case R_CRIS_16_GOT_GD:
2053 (*_bfd_error_handler)
2054 (_("(too many global variables for -fpic:"
2055 " recompile with -fPIC)"));
2058 case R_CRIS_16_TPREL:
2059 case R_CRIS_16_DTPREL:
2060 (*_bfd_error_handler)
2061 (_("(thread-local data too big for -fpic or"
2062 " -msmall-tls: recompile with -fPIC or"
2063 " -mno-small-tls)"));
2066 /* No known cause for overflow for other relocs. */
2073 case bfd_reloc_undefined:
2074 r = info->callbacks->undefined_symbol
2075 (info, symname, input_bfd, input_section, rel->r_offset,
2079 case bfd_reloc_outofrange:
2080 msg = _("internal error: out of range error");
2083 case bfd_reloc_notsupported:
2084 msg = _("internal error: unsupported relocation error");
2087 case bfd_reloc_dangerous:
2088 msg = _("internal error: dangerous relocation");
2092 msg = _("internal error: unknown error");
2097 r = info->callbacks->warning
2098 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2108 /* Finish up dynamic symbol handling. We set the contents of various
2109 dynamic sections here. */
2112 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2114 struct bfd_link_info *info;
2115 struct elf_link_hash_entry *h;
2116 Elf_Internal_Sym *sym;
2120 /* Where in the plt entry to put values. */
2121 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2123 /* What offset to add to the distance to the first PLT entry for the
2124 value at plt_off3. */
2125 int plt_off3_value_bias = 4;
2127 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2128 for PIC and non-PIC for v32 and pre-v32). */
2129 int plt_stub_offset = 8;
2130 int plt_entry_size = PLT_ENTRY_SIZE;
2131 const bfd_byte *plt_entry = elf_cris_plt_entry;
2132 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2134 /* Adjust the various PLT entry offsets. */
2135 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2139 plt_off3_value_bias = -2;
2140 plt_stub_offset = 12;
2141 plt_entry_size = PLT_ENTRY_SIZE_V32;
2142 plt_entry = elf_cris_plt_entry_v32;
2143 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2146 dynobj = elf_hash_table (info)->dynobj;
2148 if (h->plt.offset != (bfd_vma) -1)
2156 bfd_vma gotplt_offset
2157 = elf_cris_hash_entry (h)->gotplt_offset;
2158 Elf_Internal_Rela rela;
2160 bfd_boolean has_gotplt = gotplt_offset != 0;
2162 /* Get the index in the .rela.plt relocations for the .got.plt
2163 entry that corresponds to this symbol.
2164 We have to count backwards here, and the result is only valid
2165 as an index into .rela.plt. We also have to undo the effect
2166 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2167 .got.plt) for which gotplt_offset is adjusted, because while
2168 that entry goes into .got.plt, its relocation goes into
2169 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2170 processed as part of the runtime lazy .rela.plt relocation).
2171 FIXME: There be literal constants here... */
2172 bfd_vma rela_plt_index
2173 = (elf_cris_hash_table (info)->dtpmod_refcount != 0
2174 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2176 /* Get the offset into the .got table of the entry that corresponds
2177 to this function. Note that we embed knowledge that "incoming"
2178 .got goes after .got.plt in the output without padding (pointer
2179 aligned). However, that knowledge is present in several other
2184 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2186 /* This symbol has an entry in the procedure linkage table. Set it
2189 BFD_ASSERT (h->dynindx != -1);
2191 splt = bfd_get_section_by_name (dynobj, ".plt");
2192 sgot = bfd_get_section_by_name (dynobj, ".got");
2193 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2194 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2195 BFD_ASSERT (splt != NULL && sgotplt != NULL
2196 && (! has_gotplt || srela != NULL));
2198 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2200 /* Fill in the entry in the procedure linkage table. */
2203 memcpy (splt->contents + h->plt.offset, plt_entry,
2206 /* We need to enter the absolute address of the GOT entry here. */
2207 bfd_put_32 (output_bfd, got_base + got_offset,
2208 splt->contents + h->plt.offset + plt_off1);
2212 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2214 bfd_put_32 (output_bfd, got_offset,
2215 splt->contents + h->plt.offset + plt_off1);
2218 /* Fill in the plt entry and make a relocation, if this is a "real"
2222 /* Fill in the offset to the reloc table. */
2223 bfd_put_32 (output_bfd,
2224 rela_plt_index * sizeof (Elf32_External_Rela),
2225 splt->contents + h->plt.offset + plt_off2);
2227 /* Fill in the offset to the first PLT entry, where to "jump". */
2228 bfd_put_32 (output_bfd,
2229 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2230 splt->contents + h->plt.offset + plt_off3);
2232 /* Fill in the entry in the global offset table with the address of
2233 the relocating stub. */
2234 bfd_put_32 (output_bfd,
2235 (splt->output_section->vma
2236 + splt->output_offset
2239 sgotplt->contents + got_offset);
2241 /* Fill in the entry in the .rela.plt section. */
2242 rela.r_offset = (sgotplt->output_section->vma
2243 + sgotplt->output_offset
2245 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2247 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2248 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2251 if (!h->def_regular)
2253 /* Mark the symbol as undefined, rather than as defined in
2254 the .plt section. Leave the value alone. */
2255 sym->st_shndx = SHN_UNDEF;
2257 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2258 know whether resetting the value is significant; if it really
2259 is, rather than a quirk or bug in the sparc port, then I
2260 believe we'd see this elsewhere. */
2261 /* If the symbol is weak, we do need to clear the value.
2262 Otherwise, the PLT entry would provide a definition for
2263 the symbol even if the symbol wasn't defined anywhere,
2264 and so the symbol would never be NULL. */
2265 if (!h->ref_regular_nonweak)
2270 /* For an ordinary program, we emit .got relocs only for symbols that
2271 are in the dynamic-symbols table and are either defined by the
2272 program or are undefined weak symbols, or are function symbols
2273 where we do not output a PLT: the PLT reloc was output above and all
2274 references to the function symbol are redirected to the PLT. */
2275 if (h->got.offset != (bfd_vma) -1
2276 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2278 || (h->dynindx != -1
2279 && h->plt.offset == (bfd_vma) -1
2281 && h->root.type != bfd_link_hash_undefweak)))
2285 Elf_Internal_Rela rela;
2289 /* This symbol has an entry in the global offset table. Set it up. */
2291 sgot = bfd_get_section_by_name (dynobj, ".got");
2292 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2293 BFD_ASSERT (sgot != NULL && srela != NULL);
2295 rela.r_offset = (sgot->output_section->vma
2296 + sgot->output_offset
2297 + (h->got.offset &~ (bfd_vma) 1));
2299 /* If this is a static link, or it is a -Bsymbolic link and the
2300 symbol is defined locally or was forced to be local because
2301 of a version file, we just want to emit a RELATIVE reloc.
2302 The entry in the global offset table will already have been
2303 initialized in the relocate_section function. */
2304 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2305 if (! elf_hash_table (info)->dynamic_sections_created
2307 && (info->symbolic || h->dynindx == -1)
2310 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2311 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2315 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2316 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2320 loc = srela->contents;
2321 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2322 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2328 Elf_Internal_Rela rela;
2331 /* This symbol needs a copy reloc. Set it up. */
2333 BFD_ASSERT (h->dynindx != -1
2334 && (h->root.type == bfd_link_hash_defined
2335 || h->root.type == bfd_link_hash_defweak));
2337 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2339 BFD_ASSERT (s != NULL);
2341 rela.r_offset = (h->root.u.def.value
2342 + h->root.u.def.section->output_section->vma
2343 + h->root.u.def.section->output_offset);
2344 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2346 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2347 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2350 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2351 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2352 || h == elf_hash_table (info)->hgot)
2353 sym->st_shndx = SHN_ABS;
2358 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2359 offsets were changed, as part of -z combreloc handling, from those we
2363 elf_cris_finish_dynamic_sections (output_bfd, info)
2365 struct bfd_link_info *info;
2371 dynobj = elf_hash_table (info)->dynobj;
2373 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2374 BFD_ASSERT (sgot != NULL);
2375 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2377 if (elf_hash_table (info)->dynamic_sections_created)
2380 Elf32_External_Dyn *dyncon, *dynconend;
2382 splt = bfd_get_section_by_name (dynobj, ".plt");
2383 BFD_ASSERT (splt != NULL && sdyn != NULL);
2385 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2386 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2387 for (; dyncon < dynconend; dyncon++)
2389 Elf_Internal_Dyn dyn;
2392 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2400 s = bfd_get_section_by_name (output_bfd, ".got");
2401 BFD_ASSERT (s != NULL);
2402 dyn.d_un.d_ptr = s->vma;
2403 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2407 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2408 if all symbols are found in the .got (not .got.plt). */
2409 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2410 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2411 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2415 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2419 dyn.d_un.d_val = s->size;
2420 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2424 /* The procedure linkage table relocs (DT_JMPREL) should
2425 not be included in the overall relocs (DT_RELA).
2426 Therefore, we override the DT_RELASZ entry here to
2427 make it not include the JMPREL relocs. Since the
2428 linker script arranges for .rela.plt to follow all
2429 other relocation sections, we don't have to worry
2430 about changing the DT_RELA entry. */
2431 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2433 dyn.d_un.d_val -= s->size;
2434 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2439 /* Fill in the first entry in the procedure linkage table. */
2442 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2445 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2446 PLT_ENTRY_SIZE_V32);
2449 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2450 PLT_ENTRY_SIZE_V32);
2451 bfd_put_32 (output_bfd,
2452 sgot->output_section->vma
2453 + sgot->output_offset + 4,
2454 splt->contents + 4);
2456 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2457 = PLT_ENTRY_SIZE_V32;
2463 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2467 memcpy (splt->contents, elf_cris_plt0_entry,
2469 bfd_put_32 (output_bfd,
2470 sgot->output_section->vma
2471 + sgot->output_offset + 4,
2472 splt->contents + 6);
2473 bfd_put_32 (output_bfd,
2474 sgot->output_section->vma
2475 + sgot->output_offset + 8,
2476 splt->contents + 14);
2478 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2485 /* Fill in the first three entries in the global offset table. */
2489 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2491 bfd_put_32 (output_bfd,
2492 sdyn->output_section->vma + sdyn->output_offset,
2494 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2495 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2498 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2503 /* Return the section that should be marked against GC for a given
2507 cris_elf_gc_mark_hook (asection *sec,
2508 struct bfd_link_info *info,
2509 Elf_Internal_Rela *rel,
2510 struct elf_link_hash_entry *h,
2511 Elf_Internal_Sym *sym)
2513 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2517 case R_CRIS_GNU_VTINHERIT:
2518 case R_CRIS_GNU_VTENTRY:
2525 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2528 /* Update the got entry reference counts for the section being removed. */
2531 cris_elf_gc_sweep_hook (bfd *abfd,
2532 struct bfd_link_info *info,
2534 const Elf_Internal_Rela *relocs)
2536 Elf_Internal_Shdr *symtab_hdr;
2537 struct elf_link_hash_entry **sym_hashes;
2538 bfd_signed_vma *local_got_refcounts;
2539 const Elf_Internal_Rela *rel, *relend;
2544 if (info->relocatable)
2547 dynobj = elf_hash_table (info)->dynobj;
2551 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2552 sym_hashes = elf_sym_hashes (abfd);
2553 local_got_refcounts = elf_local_got_refcounts (abfd);
2555 sgot = bfd_get_section_by_name (dynobj, ".got");
2556 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2558 relend = relocs + sec->reloc_count;
2559 for (rel = relocs; rel < relend; rel++)
2561 unsigned long r_symndx;
2562 struct elf_link_hash_entry *h = NULL;
2563 bfd_signed_vma got_element_size = 4;
2564 bfd_signed_vma *specific_refcount = NULL;
2565 enum elf_cris_reloc_type r_type;
2567 r_symndx = ELF32_R_SYM (rel->r_info);
2568 if (r_symndx >= symtab_hdr->sh_info)
2570 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2571 while (h->root.type == bfd_link_hash_indirect
2572 || h->root.type == bfd_link_hash_warning)
2573 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2576 r_type = ELF32_R_TYPE (rel->r_info);
2581 case R_CRIS_16_GOTPLT:
2582 case R_CRIS_32_GOTPLT:
2583 specific_refcount = h != NULL
2584 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2585 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2589 case R_CRIS_32_GOT_GD:
2590 case R_CRIS_16_GOT_GD:
2591 got_element_size = 8;
2592 specific_refcount = h != NULL
2593 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2594 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2598 case R_CRIS_16_GOT_TPREL:
2599 case R_CRIS_32_GOT_TPREL:
2600 specific_refcount = h != NULL
2601 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2602 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2613 case R_CRIS_16_GOT_TPREL:
2614 case R_CRIS_32_GOT_TPREL:
2615 case R_CRIS_32_GOT_GD:
2616 case R_CRIS_16_GOT_GD:
2621 /* If the counters are 0 when we got here, we've
2622 miscounted somehow somewhere, an internal error. */
2623 BFD_ASSERT (h->got.refcount > 0);
2626 BFD_ASSERT (*specific_refcount > 0);
2627 --*specific_refcount;
2628 if (*specific_refcount == 0)
2630 /* We don't need the .got entry any more. */
2631 sgot->size -= got_element_size;
2632 srelgot->size -= sizeof (Elf32_External_Rela);
2638 if (local_got_refcounts != NULL)
2640 /* If the counters are 0 when we got here, we've
2641 miscounted somehow somewhere, an internal error. */
2642 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2643 --local_got_refcounts[r_symndx];
2645 BFD_ASSERT (*specific_refcount > 0);
2646 --*specific_refcount;
2647 if (*specific_refcount == 0)
2649 /* We don't need the .got entry any more. */
2650 sgot->size -= got_element_size;
2652 srelgot->size -= sizeof (Elf32_External_Rela);
2657 case R_CRIS_16_GOTPLT:
2658 case R_CRIS_32_GOTPLT:
2659 /* For local symbols, treat these like GOT relocs. */
2661 goto local_got_reloc;
2664 case R_CRIS_32_PLT_GOTREL:
2665 /* FIXME: We don't garbage-collect away the .got section. */
2666 if (local_got_refcounts != NULL)
2667 local_got_refcounts[-1]--;
2670 case R_CRIS_8_PCREL:
2671 case R_CRIS_16_PCREL:
2672 case R_CRIS_32_PCREL:
2673 case R_CRIS_32_PLT_PCREL:
2676 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2677 && h->plt.refcount > 0)
2682 case R_CRIS_32_DTPREL:
2683 case R_CRIS_16_DTPREL:
2684 elf_cris_hash_table (info)->dtpmod_refcount--;
2685 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2686 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2687 BFD_ASSERT (local_got_refcounts != NULL);
2688 local_got_refcounts[-1]--;
2699 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2700 entry but we found we will not create any. Called when we find we will
2701 not have any PLT for this symbol, by for example
2702 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2703 or elf_cris_size_dynamic_sections if no dynamic sections will be
2704 created (we're only linking static objects). */
2707 elf_cris_adjust_gotplt_to_got (h, p)
2708 struct elf_cris_link_hash_entry *h;
2711 struct bfd_link_info *info = (struct bfd_link_info *) p;
2713 if (h->root.root.type == bfd_link_hash_warning)
2714 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2716 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2717 if (h->gotplt_refcount <= 0)
2720 if (h->reg_got_refcount > 0)
2722 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2723 Probably not necessary at this stage, but keeping them accurate
2724 helps avoiding surprises later. */
2725 h->root.got.refcount += h->gotplt_refcount;
2726 h->reg_got_refcount += h->gotplt_refcount;
2727 h->gotplt_refcount = 0;
2731 /* No GOT entry for this symbol. We need to create one. */
2732 bfd *dynobj = elf_hash_table (info)->dynobj;
2736 BFD_ASSERT (dynobj != NULL);
2737 sgot = bfd_get_section_by_name (dynobj, ".got");
2738 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2740 /* Put accurate refcounts there. */
2741 h->root.got.refcount += h->gotplt_refcount;
2742 h->reg_got_refcount = h->gotplt_refcount;
2744 h->gotplt_refcount = 0;
2746 /* We always have a .got and a .rela.got section if there were
2747 GOTPLT relocs in input. */
2748 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2750 /* Allocate space in the .got section. */
2753 /* Allocate relocation space. */
2754 srelgot->size += sizeof (Elf32_External_Rela);
2760 /* Try to fold PLT entries with GOT entries. There are two cases when we
2763 - When all PLT references are GOTPLT references, and there are GOT
2764 references, and this is not the executable. We don't have to
2765 generate a PLT at all.
2767 - When there are both (ordinary) PLT references and GOT references,
2768 and this isn't the executable.
2769 We want to make the PLT reference use the ordinary GOT entry rather
2770 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2771 since the GOT entry will have to be resolved at startup anyway.
2773 Though the latter case is handled when room for the PLT is allocated,
2776 By folding into the GOT, we may need a round-trip to a PLT in the
2777 executable for calls, a loss in performance. Still, losing a
2778 reloc is a win in size and at least in start-up time.
2780 Note that this function is called before symbols are forced local by
2781 version scripts. The differing cases are handled by
2782 elf_cris_hide_symbol. */
2785 elf_cris_try_fold_plt_to_got (h, p)
2786 struct elf_cris_link_hash_entry *h;
2789 struct bfd_link_info *info = (struct bfd_link_info *) p;
2791 /* If there are no GOT references for this symbol, we can't fold any
2792 other reference so there's nothing to do. Likewise if there are no
2793 PLT references; GOTPLT references included. */
2794 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2797 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2798 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2800 if (h->gotplt_refcount == h->root.plt.refcount)
2802 /* The only PLT references are GOTPLT references, and there are GOT
2803 references. Convert PLT to GOT references. */
2804 if (! elf_cris_adjust_gotplt_to_got (h, info))
2807 /* Clear the PLT references, so no PLT will be created. */
2808 h->root.plt.offset = (bfd_vma) -1;
2814 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2815 to use a GOT entry (and create one) rather than requiring a GOTPLT
2819 elf_cris_hide_symbol (info, h, force_local)
2820 struct bfd_link_info *info;
2821 struct elf_link_hash_entry *h;
2822 bfd_boolean force_local;
2824 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2826 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2829 /* Adjust a symbol defined by a dynamic object and referenced by a
2830 regular object. The current definition is in some section of the
2831 dynamic object, but we're not including those sections. We have to
2832 change the definition to something the rest of the link can
2836 elf_cris_adjust_dynamic_symbol (info, h)
2837 struct bfd_link_info *info;
2838 struct elf_link_hash_entry *h;
2842 bfd_size_type plt_entry_size;
2844 dynobj = elf_hash_table (info)->dynobj;
2846 /* Make sure we know what is going on here. */
2847 BFD_ASSERT (dynobj != NULL
2849 || h->u.weakdef != NULL
2852 && !h->def_regular)));
2855 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2856 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2858 /* If this is a function, put it in the procedure linkage table. We
2859 will fill in the contents of the procedure linkage table later,
2860 when we know the address of the .got section. */
2861 if (h->type == STT_FUNC
2864 /* If we link a program (not a DSO), we'll get rid of unnecessary
2865 PLT entries; we point to the actual symbols -- even for pic
2866 relocs, because a program built with -fpic should have the same
2867 result as one built without -fpic, specifically considering weak
2869 FIXME: m68k and i386 differ here, for unclear reasons. */
2873 /* This case can occur if we saw a PLT reloc in an input file,
2874 but the symbol was not defined by a dynamic object. In such
2875 a case, we don't actually need to build a procedure linkage
2876 table, and we can just do an absolute or PC reloc instead, or
2877 change a .got.plt index to a .got index for GOTPLT relocs. */
2878 BFD_ASSERT (h->needs_plt);
2880 h->plt.offset = (bfd_vma) -1;
2882 elf_cris_adjust_gotplt_to_got ((struct
2883 elf_cris_link_hash_entry *) h,
2887 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2888 where a pointer-equivalent symbol was unimportant (i.e. more
2889 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2890 of the PLT. We can't for the executable, because the GOT
2891 entries will point to the PLT there (and be constant). */
2893 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2897 /* GC or folding may have rendered this entry unused. */
2898 if (h->plt.refcount <= 0)
2901 h->plt.offset = (bfd_vma) -1;
2905 /* Make sure this symbol is output as a dynamic symbol. */
2906 if (h->dynindx == -1)
2908 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2912 s = bfd_get_section_by_name (dynobj, ".plt");
2913 BFD_ASSERT (s != NULL);
2915 /* If this is the first .plt entry, make room for the special
2918 s->size += plt_entry_size;
2920 /* If this symbol is not defined in a regular file, and we are
2921 not generating a shared library, then set the symbol to this
2922 location in the .plt. */
2926 h->root.u.def.section = s;
2927 h->root.u.def.value = s->size;
2930 /* If there's already a GOT entry, use that, not a .got.plt. A
2931 GOT field still has a reference count when we get here; it's
2932 not yet changed to an offset. We can't do this for an
2933 executable, because then the reloc associated with the PLT
2934 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2935 this to elf_cris_try_fold_plt_to_got. */
2936 if (info->shared && h->got.refcount > 0)
2938 h->got.refcount += h->plt.refcount;
2940 /* Mark the PLT offset to use the GOT entry by setting the low
2941 bit in the plt offset; it is always a multiple of
2942 plt_entry_size (which is at least a multiple of 2). */
2943 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2945 /* Change the PLT refcount to an offset. */
2946 h->plt.offset = s->size;
2948 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2949 that the got entry should be used instead. */
2950 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2951 h)->gotplt_offset == 0);
2953 /* Make room for this entry. */
2954 s->size += plt_entry_size;
2959 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2960 h->plt.offset = s->size;
2962 /* Make room for this entry. */
2963 s->size += plt_entry_size;
2965 /* We also need to make an entry in the .got.plt section, which
2966 will be placed in the .got section by the linker script. */
2967 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2968 = elf_cris_hash_table (info)->next_gotplt_entry;
2969 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2971 s = bfd_get_section_by_name (dynobj, ".got.plt");
2972 BFD_ASSERT (s != NULL);
2975 /* We also need to make an entry in the .rela.plt section. */
2977 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2978 BFD_ASSERT (s != NULL);
2979 s->size += sizeof (Elf32_External_Rela);
2984 /* Reinitialize the plt offset now that it is not used as a reference
2986 h->plt.offset = (bfd_vma) -1;
2988 /* If this is a weak symbol, and there is a real definition, the
2989 processor independent code will have arranged for us to see the
2990 real definition first, and we can just use the same value. */
2991 if (h->u.weakdef != NULL)
2993 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2994 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2995 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2996 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3000 /* This is a reference to a symbol defined by a dynamic object which
3001 is not a function. */
3003 /* If we are creating a shared library, we must presume that the
3004 only references to the symbol are via the global offset table.
3005 For such cases we need not do anything here; the relocations will
3006 be handled correctly by relocate_section. */
3010 /* If there are no references to this symbol that do not use the
3011 GOT, we don't need to generate a copy reloc. */
3012 if (!h->non_got_ref)
3017 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3018 h->root.root.string);
3022 /* We must allocate the symbol in our .dynbss section, which will
3023 become part of the .bss section of the executable. There will be
3024 an entry for this symbol in the .dynsym section. The dynamic
3025 object will contain position independent code, so all references
3026 from the dynamic object to this symbol will go through the global
3027 offset table. The dynamic linker will use the .dynsym entry to
3028 determine the address it must put in the global offset table, so
3029 both the dynamic object and the regular object will refer to the
3030 same memory location for the variable. */
3032 s = bfd_get_section_by_name (dynobj, ".dynbss");
3033 BFD_ASSERT (s != NULL);
3035 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3036 copy the initial value out of the dynamic object and into the
3037 runtime process image. We need to remember the offset into the
3038 .rela.bss section we are going to use. */
3039 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3043 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3044 BFD_ASSERT (srel != NULL);
3045 srel->size += sizeof (Elf32_External_Rela);
3049 return _bfd_elf_adjust_dynamic_copy (h, s);
3052 /* Adjust our "subclass" elements for an indirect symbol. */
3055 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3056 struct elf_link_hash_entry *dir,
3057 struct elf_link_hash_entry *ind)
3059 struct elf_cris_link_hash_entry *edir, *eind;
3061 edir = (struct elf_cris_link_hash_entry *) dir;
3062 eind = (struct elf_cris_link_hash_entry *) ind;
3064 /* Only indirect symbols are replaced; we're not interested in
3065 updating any of EIND's fields for other symbols. */
3066 if (eind->root.root.type != bfd_link_hash_indirect)
3068 /* Still, we need to copy flags for e.g. weak definitions. */
3069 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3073 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3074 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3076 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3077 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3078 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3079 XMOVE (gotplt_refcount);
3080 XMOVE (gotplt_offset);
3081 XMOVE (reg_got_refcount);
3082 XMOVE (tprel_refcount);
3083 XMOVE (dtp_refcount);
3087 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3090 /* Look through the relocs for a section during the first phase. */
3093 cris_elf_check_relocs (abfd, info, sec, relocs)
3095 struct bfd_link_info *info;
3097 const Elf_Internal_Rela *relocs;
3100 Elf_Internal_Shdr *symtab_hdr;
3101 struct elf_link_hash_entry **sym_hashes;
3102 bfd_signed_vma *local_got_refcounts;
3103 const Elf_Internal_Rela *rel;
3104 const Elf_Internal_Rela *rel_end;
3109 if (info->relocatable)
3112 dynobj = elf_hash_table (info)->dynobj;
3113 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3114 sym_hashes = elf_sym_hashes (abfd);
3115 local_got_refcounts = elf_local_got_refcounts (abfd);
3121 rel_end = relocs + sec->reloc_count;
3122 for (rel = relocs; rel < rel_end; rel++)
3124 struct elf_link_hash_entry *h;
3125 unsigned long r_symndx;
3126 enum elf_cris_reloc_type r_type;
3127 bfd_signed_vma got_element_size = 4;
3128 unsigned long r_symndx_lgot = INT_MAX;
3130 r_symndx = ELF32_R_SYM (rel->r_info);
3131 if (r_symndx < symtab_hdr->sh_info)
3134 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3138 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3139 while (h->root.type == bfd_link_hash_indirect
3140 || h->root.type == bfd_link_hash_warning)
3141 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3144 r_type = ELF32_R_TYPE (rel->r_info);
3146 /* Some relocs require linker-created sections; we need to hang them
3147 on the first input bfd we found that contained dynamic relocs. */
3150 case R_CRIS_16_DTPREL:
3151 case R_CRIS_32_DTPREL:
3152 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3153 entry at index 3. */
3154 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3155 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3156 elf_cris_hash_table (info)->dtpmod_refcount++;
3161 case R_CRIS_16_GOT_GD:
3162 case R_CRIS_32_GOT_GD:
3163 case R_CRIS_32_GOT_TPREL:
3164 case R_CRIS_16_GOT_TPREL:
3167 case R_CRIS_32_GOTREL:
3168 case R_CRIS_32_PLT_GOTREL:
3169 case R_CRIS_32_PLT_PCREL:
3170 case R_CRIS_16_GOTPLT:
3171 case R_CRIS_32_GOTPLT:
3174 elf_hash_table (info)->dynobj = dynobj = abfd;
3176 /* We could handle this if we can get a handle on the
3177 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3178 that, we must insist on dynobj being a specific mach. */
3179 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3181 (*_bfd_error_handler)
3182 (_("%B, section %A:\n v10/v32 compatible object %s"
3183 " must not contain a PIC relocation"),
3188 /* Create the .got section, so we can assume it's always
3189 present whenever there's a dynobj. */
3190 if (!_bfd_elf_create_got_section (dynobj, info))
3195 sgot = bfd_get_section_by_name (dynobj, ".got");
3197 if (local_got_refcounts == NULL)
3201 /* We use index local_got_refcounts[-1] to count all
3202 GOT-relative relocations that do not have explicit
3204 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3205 amt *= sizeof (bfd_signed_vma);
3206 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3207 if (local_got_refcounts == NULL)
3210 local_got_refcounts++;
3211 elf_local_got_refcounts (abfd) = local_got_refcounts;
3219 /* Some relocs require a global offset table (but perhaps not a
3220 specific GOT entry). */
3223 case R_CRIS_16_DTPREL:
3224 case R_CRIS_32_DTPREL:
3225 /* Not requesting .got.rela for an executable: the contents
3226 of the first entry is constant there. For a shared
3227 library, we need .got.rela for the R_CRIS_DTPMOD
3228 relocation at index 3. */
3235 case R_CRIS_16_GOT_GD:
3236 case R_CRIS_32_GOT_GD:
3237 case R_CRIS_32_GOT_TPREL:
3238 case R_CRIS_16_GOT_TPREL:
3241 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3242 entry only for local symbols. Unfortunately, we don't know
3243 until later on if there's a version script that forces the
3244 symbol local. We must have the .rela.got section in place
3245 before we know if the symbol looks global now, so we need
3246 to treat the reloc just like for R_CRIS_16_GOT and
3248 case R_CRIS_16_GOTPLT:
3249 case R_CRIS_32_GOTPLT:
3253 && (h != NULL || info->shared))
3255 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3256 if (srelgot == NULL)
3258 srelgot = bfd_make_section_with_flags (dynobj,
3264 | SEC_LINKER_CREATED
3267 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3277 /* Warn and error for invalid input. */
3281 case R_CRIS_32_TPREL:
3282 case R_CRIS_16_TPREL:
3286 (*_bfd_error_handler)
3287 (_("%B, section %A:\n relocation %s not valid"
3288 " in a shared object;"
3289 " typically an option mixup, recompile with -fPIC"),
3292 cris_elf_howto_table[r_type].name);
3293 /* Don't return FALSE here; we want messages for all of
3294 these and the error behavior is ungraceful
3304 case R_CRIS_16_GOT_GD:
3305 case R_CRIS_32_GOT_GD:
3306 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3307 got_element_size = 8;
3308 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3311 case R_CRIS_16_DTPREL:
3312 case R_CRIS_32_DTPREL:
3313 /* These two just request for the constant-index
3314 module-local tls_index-sized GOT entry, which we add
3319 case R_CRIS_32_GOT_TPREL:
3320 case R_CRIS_16_GOT_TPREL:
3321 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3323 /* Those relocs also require that a DSO is of type
3324 Initial Exec. Like other targets, we don't reset this
3325 flag even if the relocs are GC:ed away. */
3327 info->flags |= DF_STATIC_TLS;
3330 /* Let's list the other assembler-generated TLS-relocs too,
3331 just to show that they're not forgotten. */
3332 case R_CRIS_16_TPREL:
3333 case R_CRIS_32_TPREL:
3340 case R_CRIS_16_GOTPLT:
3341 case R_CRIS_32_GOTPLT:
3342 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3343 entry) is eliminated. We can only do this for a non-local
3347 elf_cris_hash_entry (h)->gotplt_refcount++;
3348 goto handle_gotplt_reloc;
3350 /* If h is NULL then this is a local symbol, and we must make a
3351 GOT entry for it, so handle it like a GOT reloc. */
3356 case R_CRIS_16_GOT_GD:
3357 case R_CRIS_32_GOT_GD:
3358 case R_CRIS_32_GOT_TPREL:
3359 case R_CRIS_16_GOT_TPREL:
3362 /* This symbol requires a global offset table entry. */
3365 if (h->got.refcount == 0)
3367 /* Make sure this symbol is output as a dynamic symbol. */
3368 if (h->dynindx == -1)
3370 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3375 /* Update the sum of reloc counts for this symbol. */
3382 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3384 /* Allocate space in the .got section. */
3385 sgot->size += got_element_size;
3386 /* Allocate relocation space. */
3387 srelgot->size += sizeof (Elf32_External_Rela);
3389 elf_cris_hash_entry (h)->reg_got_refcount++;
3393 case R_CRIS_16_GOT_GD:
3394 case R_CRIS_32_GOT_GD:
3395 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3397 /* Allocate space in the .got section. */
3398 sgot->size += got_element_size;
3399 /* Allocate relocation space. */
3400 srelgot->size += sizeof (Elf32_External_Rela);
3402 elf_cris_hash_entry (h)->dtp_refcount++;
3406 case R_CRIS_32_GOT_TPREL:
3407 case R_CRIS_16_GOT_TPREL:
3408 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3410 /* Allocate space in the .got section. */
3411 sgot->size += got_element_size;
3412 /* Allocate relocation space. */
3413 srelgot->size += sizeof (Elf32_External_Rela);
3415 elf_cris_hash_entry (h)->tprel_refcount++;
3425 /* This is a global offset table entry for a local symbol. */
3426 if (local_got_refcounts[r_symndx_lgot] == 0)
3428 sgot->size += got_element_size;
3431 /* If we are generating a shared object, we need
3432 to output a R_CRIS_RELATIVE reloc so that the
3433 dynamic linker can adjust this GOT entry.
3434 Similarly for non-regular got entries. */
3435 srelgot->size += sizeof (Elf32_External_Rela);
3438 /* Update the reloc-specific count. */
3439 local_got_refcounts[r_symndx_lgot]++;
3441 /* This one is the sum of all the others. */
3442 local_got_refcounts[r_symndx]++;
3446 case R_CRIS_16_DTPREL:
3447 case R_CRIS_32_DTPREL:
3448 case R_CRIS_32_GOTREL:
3449 /* This reference requires a global offset table.
3450 FIXME: The actual refcount isn't used currently; the .got
3451 section can't be removed if there were any references in the
3453 local_got_refcounts[-1]++;
3456 handle_gotplt_reloc:
3458 case R_CRIS_32_PLT_GOTREL:
3459 /* This reference requires a global offset table. */
3460 local_got_refcounts[-1]++;
3463 case R_CRIS_32_PLT_PCREL:
3464 /* This symbol requires a procedure linkage table entry. We
3465 actually build the entry in adjust_dynamic_symbol,
3466 because this might be a case of linking PIC code which is
3467 never referenced by a dynamic object, in which case we
3468 don't need to generate a procedure linkage table entry
3471 /* Beware: if we'd check for visibility of the symbol here
3472 (and not marking the need for a PLT when non-visible), we'd
3473 get into trouble with keeping handling consistent with
3474 regards to relocs found before definition and GOTPLT
3475 handling. Eliminable PLT entries will be dealt with later
3487 /* Let's help debug shared library creation. Any of these
3488 relocs *can* be used in shared libs, but pages containing
3489 them cannot be shared, so they're not appropriate for
3490 common use. Don't warn for sections we don't care about,
3491 such as debug sections or non-constant sections. We
3492 can't help tables of (global) function pointers, for
3493 example, though they must be emitted in a (writable) data
3494 section to avoid having impure text sections. */
3496 && (sec->flags & SEC_ALLOC) != 0
3497 && (sec->flags & SEC_READONLY) != 0)
3499 /* FIXME: How do we make this optionally a warning only? */
3500 (*_bfd_error_handler)
3501 (_("%B, section %A:\n relocation %s should not"
3502 " be used in a shared object; recompile with -fPIC"),
3505 cris_elf_howto_table[r_type].name);
3511 /* Make sure a plt entry is created for this symbol if it
3512 turns out to be a function defined by a dynamic object. */
3513 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3517 /* If we are creating a shared library and this is not a local
3518 symbol, we need to copy the reloc into the shared library.
3519 However when linking with -Bsymbolic and this is a global
3520 symbol which is defined in an object we are including in the
3521 link (i.e., DEF_REGULAR is set), then we can resolve the
3522 reloc directly. At this point we have not seen all the input
3523 files, so it is possible that DEF_REGULAR is not set now but
3524 will be set later (it is never cleared). In case of a weak
3525 definition, DEF_REGULAR may be cleared later by a strong
3526 definition in a shared library. We account for that
3527 possibility below by storing information in the relocs_copied
3528 field of the hash table entry. A similar situation occurs
3529 when creating shared libraries and symbol visibility changes
3530 render the symbol local. */
3532 /* No need to do anything if we're not creating a shared object. */
3536 /* We don't need to handle relocs into sections not going into
3537 the "real" output. */
3538 if ((sec->flags & SEC_ALLOC) == 0)
3541 /* We may need to create a reloc section in the dynobj and made room
3545 sreloc = _bfd_elf_make_dynamic_reloc_section
3546 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3552 if (sec->flags & SEC_READONLY)
3553 info->flags |= DF_TEXTREL;
3555 sreloc->size += sizeof (Elf32_External_Rela);
3558 case R_CRIS_8_PCREL:
3559 case R_CRIS_16_PCREL:
3560 case R_CRIS_32_PCREL:
3565 /* Make sure a plt entry is created for this symbol if it
3566 turns out to be a function defined by a dynamic object. */
3567 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3571 /* If we are creating a shared library and this is not a local
3572 symbol, we need to copy the reloc into the shared library.
3573 However when linking with -Bsymbolic and this is a global
3574 symbol which is defined in an object we are including in the
3575 link (i.e., DEF_REGULAR is set), then we can resolve the
3576 reloc directly. At this point we have not seen all the input
3577 files, so it is possible that DEF_REGULAR is not set now but
3578 will be set later (it is never cleared). In case of a weak
3579 definition, DEF_REGULAR may be cleared later by a strong
3580 definition in a shared library. We account for that
3581 possibility below by storing information in the relocs_copied
3582 field of the hash table entry. A similar situation occurs
3583 when creating shared libraries and symbol visibility changes
3584 render the symbol local. */
3586 /* No need to do anything if we're not creating a shared object. */
3590 /* We don't need to handle relocs into sections not going into
3591 the "real" output. */
3592 if ((sec->flags & SEC_ALLOC) == 0)
3595 /* If the symbol is local, then we know already we can
3596 eliminate the reloc. */
3597 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3600 /* If this is with -Bsymbolic and the symbol isn't weak, and
3601 is defined by an ordinary object (the ones we include in
3602 this shared library) then we can also eliminate the
3603 reloc. See comment above for more eliminable cases which
3604 we can't identify at this time. */
3606 && h->root.type != bfd_link_hash_defweak
3610 /* We may need to create a reloc section in the dynobj and made room
3614 sreloc = _bfd_elf_make_dynamic_reloc_section
3615 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3621 sreloc->size += sizeof (Elf32_External_Rela);
3623 /* We count the number of PC relative relocations we have
3624 entered for this symbol, so that we can discard them
3625 again if the symbol is later defined by a regular object.
3626 We know that h is really a pointer to an
3627 elf_cris_link_hash_entry. */
3629 struct elf_cris_link_hash_entry *eh;
3630 struct elf_cris_pcrel_relocs_copied *p;
3632 eh = elf_cris_hash_entry (h);
3634 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3635 if (p->section == sreloc)
3640 p = ((struct elf_cris_pcrel_relocs_copied *)
3641 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3644 p->next = eh->pcrel_relocs_copied;
3645 eh->pcrel_relocs_copied = p;
3646 p->section = sreloc;
3655 /* This relocation describes the C++ object vtable hierarchy.
3656 Reconstruct it for later use during GC. */
3657 case R_CRIS_GNU_VTINHERIT:
3658 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3662 /* This relocation describes which C++ vtable entries are actually
3663 used. Record for later use during GC. */
3664 case R_CRIS_GNU_VTENTRY:
3665 BFD_ASSERT (h != NULL);
3667 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3671 case R_CRIS_16_TPREL:
3672 case R_CRIS_32_TPREL:
3673 /* Already warned above, when necessary. */
3677 /* Other relocs do not appear here. */
3678 bfd_set_error (bfd_error_bad_value);
3686 /* Set the sizes of the dynamic sections. */
3689 elf_cris_size_dynamic_sections (output_bfd, info)
3690 bfd *output_bfd ATTRIBUTE_UNUSED;
3691 struct bfd_link_info *info;
3698 dynobj = elf_hash_table (info)->dynobj;
3699 BFD_ASSERT (dynobj != NULL);
3701 if (elf_hash_table (info)->dynamic_sections_created)
3703 /* Set the contents of the .interp section to the interpreter. */
3704 if (info->executable)
3706 s = bfd_get_section_by_name (dynobj, ".interp");
3707 BFD_ASSERT (s != NULL);
3708 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3709 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3714 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3715 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3716 elf_cris_adjust_gotplt_to_got,
3719 /* We may have created entries in the .rela.got section.
3720 However, if we are not creating the dynamic sections, we will
3721 not actually use these entries. Reset the size of .rela.got,
3722 which will cause it to get stripped from the output file
3724 s = bfd_get_section_by_name (dynobj, ".rela.got");
3729 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3730 relative relocs against symbols defined in a regular object. We
3731 allocated space for them in the check_relocs routine, but we will not
3732 fill them in in the relocate_section routine. We also discard space
3733 for relocs that have become for local symbols due to symbol
3734 visibility changes. For programs, we discard space for relocs for
3735 symbols not referenced by any dynamic object. */
3737 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3738 elf_cris_discard_excess_dso_dynamics,
3741 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3742 elf_cris_discard_excess_program_dynamics,
3745 /* The check_relocs and adjust_dynamic_symbol entry points have
3746 determined the sizes of the various dynamic sections. Allocate
3750 for (s = dynobj->sections; s != NULL; s = s->next)
3754 if ((s->flags & SEC_LINKER_CREATED) == 0)
3757 /* It's OK to base decisions on the section name, because none
3758 of the dynobj section names depend upon the input files. */
3759 name = bfd_get_section_name (dynobj, s);
3761 if (strcmp (name, ".plt") == 0)
3763 /* Remember whether there is a PLT. */
3766 else if (strcmp (name, ".got.plt") == 0)
3768 /* The .got.plt contains the .got header as well as the
3769 actual .got.plt contents. The .got header may contain a
3770 R_CRIS_DTPMOD entry at index 3. */
3771 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3774 else if (CONST_STRNEQ (name, ".rela"))
3776 if (strcmp (name, ".rela.got") == 0
3777 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3779 s->size += sizeof (Elf32_External_Rela);
3783 /* Remember whether there are any reloc sections other
3785 if (strcmp (name, ".rela.plt") != 0)
3788 /* We use the reloc_count field as a counter if we need
3789 to copy relocs into the output file. */
3793 else if (! CONST_STRNEQ (name, ".got")
3794 && strcmp (name, ".dynbss") != 0)
3796 /* It's not one of our sections, so don't allocate space. */
3802 /* If we don't need this section, strip it from the
3803 output file. This is mostly to handle .rela.bss and
3804 .rela.plt. We must create both sections in
3805 create_dynamic_sections, because they must be created
3806 before the linker maps input sections to output
3807 sections. The linker does that before
3808 adjust_dynamic_symbol is called, and it is that
3809 function which decides whether anything needs to go
3810 into these sections. */
3811 s->flags |= SEC_EXCLUDE;
3815 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3818 /* Allocate memory for the section contents. We use bfd_zalloc here
3819 in case unused entries are not reclaimed before the section's
3820 contents are written out. This should not happen, but this way
3821 if it does, we will not write out garbage. For reloc sections,
3822 this will make entries have the type R_CRIS_NONE. */
3823 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3824 if (s->contents == NULL)
3828 if (elf_hash_table (info)->dynamic_sections_created)
3830 /* Add some entries to the .dynamic section. We fill in the
3831 values later, in elf_cris_finish_dynamic_sections, but we
3832 must add the entries now so that we get the correct size for
3833 the .dynamic section. The DT_DEBUG entry is filled in by the
3834 dynamic linker and used by the debugger. */
3835 #define add_dynamic_entry(TAG, VAL) \
3836 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3840 if (!add_dynamic_entry (DT_DEBUG, 0))
3846 if (!add_dynamic_entry (DT_PLTGOT, 0)
3847 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3848 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3849 || !add_dynamic_entry (DT_JMPREL, 0))
3855 if (!add_dynamic_entry (DT_RELA, 0)
3856 || !add_dynamic_entry (DT_RELASZ, 0)
3857 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3861 if ((info->flags & DF_TEXTREL) != 0)
3863 if (!add_dynamic_entry (DT_TEXTREL, 0))
3865 info->flags |= DF_TEXTREL;
3868 #undef add_dynamic_entry
3873 /* This function is called via elf_cris_link_hash_traverse if we are
3874 creating a shared object. In the -Bsymbolic case, it discards the
3875 space allocated to copy PC relative relocs against symbols which
3876 are defined in regular objects. For the normal non-symbolic case,
3877 we also discard space for relocs that have become local due to
3878 symbol visibility changes. We allocated space for them in the
3879 check_relocs routine, but we won't fill them in in the
3880 relocate_section routine. */
3883 elf_cris_discard_excess_dso_dynamics (h, inf)
3884 struct elf_cris_link_hash_entry *h;
3887 struct elf_cris_pcrel_relocs_copied *s;
3888 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3890 if (h->root.root.type == bfd_link_hash_warning)
3891 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3893 /* If a symbol has been forced local or we have found a regular
3894 definition for the symbolic link case, then we won't be needing
3896 if (h->root.def_regular
3897 && (h->root.forced_local
3900 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3901 s->section->size -= s->count * sizeof (Elf32_External_Rela);
3906 /* If we have accounted for PC-relative relocs for read-only
3907 sections, now is the time to warn for them. We can't do it in
3908 cris_elf_check_relocs, because we don't know the status of all
3909 symbols at that time (and it's common to force symbols local
3912 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3914 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3916 /* FIXME: How do we make this optionally a warning only? */
3917 (*_bfd_error_handler)
3918 (_("%B, section `%A', to symbol `%s':\n"
3919 " relocation %s should not be used"
3920 " in a shared object; recompile with -fPIC"),
3923 h->root.root.root.string,
3924 cris_elf_howto_table[s->r_type].name);
3926 info->flags |= DF_TEXTREL;
3932 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3933 creating a shared object. We discard space for relocs for symbols put
3934 in the .got, but which we found we do not have to resolve at run-time. */
3937 elf_cris_discard_excess_program_dynamics (h, inf)
3938 struct elf_cris_link_hash_entry *h;
3941 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3943 if (h->root.root.type == bfd_link_hash_warning)
3944 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3946 /* If we're not creating a shared library and have a symbol which is
3947 referred to by .got references, but the symbol is defined locally,
3948 (or rather, not defined by a DSO) then lose the reloc for the .got
3949 (don't allocate room for it). Likewise for relocs for something
3950 for which we create a PLT. */
3951 if (!h->root.def_dynamic
3952 || h->root.plt.refcount > 0)
3954 if (h->reg_got_refcount > 0
3955 /* The size of this section is only valid and in sync with the
3956 various reference counts if we do dynamic; don't decrement it
3958 && elf_hash_table (info)->dynamic_sections_created)
3960 bfd *dynobj = elf_hash_table (info)->dynobj;
3963 BFD_ASSERT (dynobj != NULL);
3965 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3967 BFD_ASSERT (srelgot != NULL);
3969 srelgot->size -= sizeof (Elf32_External_Rela);
3972 /* If the locally-defined symbol isn't used by a DSO, then we don't
3973 have to export it as a dynamic symbol. This was already done for
3974 functions; doing this for all symbols would presumably not
3975 introduce new problems. Of course we don't do this if we're
3976 exporting all dynamic symbols. */
3977 if (! info->export_dynamic
3978 && h->root.dynindx != -1
3979 && !h->root.def_dynamic
3980 && !h->root.ref_dynamic)
3982 h->root.dynindx = -1;
3983 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3984 h->root.dynstr_index);
3991 /* Reject a file depending on presence and expectation of prefixed
3992 underscores on symbols. */
3995 cris_elf_object_p (abfd)
3998 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4001 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4002 return (bfd_get_symbol_leading_char (abfd) == '_');
4004 return (bfd_get_symbol_leading_char (abfd) == 0);
4007 /* Mark presence or absence of leading underscore. Set machine type
4008 flags from mach type. */
4011 cris_elf_final_write_processing (abfd, linker)
4013 bfd_boolean linker ATTRIBUTE_UNUSED;
4015 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4017 e_flags &= ~EF_CRIS_UNDERSCORE;
4018 if (bfd_get_symbol_leading_char (abfd) == '_')
4019 e_flags |= EF_CRIS_UNDERSCORE;
4021 switch (bfd_get_mach (abfd))
4023 case bfd_mach_cris_v0_v10:
4024 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4027 case bfd_mach_cris_v10_v32:
4028 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4031 case bfd_mach_cris_v32:
4032 e_flags |= EF_CRIS_VARIANT_V32;
4036 _bfd_abort (__FILE__, __LINE__,
4037 _("Unexpected machine number"));
4040 elf_elfheader (abfd)->e_flags = e_flags;
4043 /* Set the mach type from e_flags value. */
4046 cris_elf_set_mach_from_flags (abfd, flags)
4048 unsigned long flags;
4050 switch (flags & EF_CRIS_VARIANT_MASK)
4052 case EF_CRIS_VARIANT_ANY_V0_V10:
4053 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4056 case EF_CRIS_VARIANT_V32:
4057 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4060 case EF_CRIS_VARIANT_COMMON_V10_V32:
4061 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4065 /* Since we don't recognize them, we obviously can't support them
4066 with this code; we'd have to require that all future handling
4067 would be optional. */
4068 bfd_set_error (bfd_error_wrong_format);
4075 /* Display the flags field. */
4078 cris_elf_print_private_bfd_data (abfd, ptr)
4082 FILE *file = (FILE *) ptr;
4084 BFD_ASSERT (abfd != NULL && ptr != NULL);
4086 _bfd_elf_print_private_bfd_data (abfd, ptr);
4088 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4090 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4091 fprintf (file, _(" [symbols have a _ prefix]"));
4092 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4093 == EF_CRIS_VARIANT_COMMON_V10_V32)
4094 fprintf (file, _(" [v10 and v32]"));
4095 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4096 == EF_CRIS_VARIANT_V32)
4097 fprintf (file, _(" [v32]"));
4103 /* Don't mix files with and without a leading underscore. */
4106 cris_elf_merge_private_bfd_data (ibfd, obfd)
4112 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4115 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4116 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4119 imach = bfd_get_mach (ibfd);
4121 if (! elf_flags_init (obfd))
4123 /* This happens when ld starts out with a 'blank' output file. */
4124 elf_flags_init (obfd) = TRUE;
4126 /* We ignore the linker-set mach, and instead set it according to
4127 the first input file. This would also happen if we could
4128 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4129 This allows us to keep the same linker config across
4130 cris(v0..v10) and crisv32. The drawback is that we can't force
4131 the output type, which might be a sane thing to do for a
4132 v10+v32 compatibility object. */
4133 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4137 if (bfd_get_symbol_leading_char (ibfd)
4138 != bfd_get_symbol_leading_char (obfd))
4140 (*_bfd_error_handler)
4141 (bfd_get_symbol_leading_char (ibfd) == '_'
4142 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4143 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4145 bfd_set_error (bfd_error_bad_value);
4149 omach = bfd_get_mach (obfd);
4153 /* We can get an incompatible combination only if either is
4154 bfd_mach_cris_v32, and the other one isn't compatible. */
4155 if ((imach == bfd_mach_cris_v32
4156 && omach != bfd_mach_cris_v10_v32)
4157 || (omach == bfd_mach_cris_v32
4158 && imach != bfd_mach_cris_v10_v32))
4160 (*_bfd_error_handler)
4161 ((imach == bfd_mach_cris_v32)
4162 ? _("%B contains CRIS v32 code, incompatible"
4163 " with previous objects")
4164 : _("%B contains non-CRIS-v32 code, incompatible"
4165 " with previous objects"),
4167 bfd_set_error (bfd_error_bad_value);
4171 /* We don't have to check the case where the input is compatible
4172 with v10 and v32, because the output is already known to be set
4173 to the other (compatible) mach. */
4174 if (omach == bfd_mach_cris_v10_v32
4175 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4182 /* Do side-effects of e_flags copying to obfd. */
4185 cris_elf_copy_private_bfd_data (ibfd, obfd)
4189 /* Call the base function. */
4190 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4193 /* If output is big-endian for some obscure reason, stop here. */
4194 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4197 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4198 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4201 /* Do what we really came here for. */
4202 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4205 static enum elf_reloc_type_class
4206 elf_cris_reloc_type_class (rela)
4207 const Elf_Internal_Rela *rela;
4209 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4212 case R_CRIS_RELATIVE:
4213 return reloc_class_relative;
4214 case R_CRIS_JUMP_SLOT:
4215 return reloc_class_plt;
4217 return reloc_class_copy;
4219 return reloc_class_normal;
4223 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4224 two GOT entries from three types with two different sizes. We handle
4225 it as a single entry, so we can use the regular offset-calculation
4229 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4230 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4231 struct elf_link_hash_entry *hr,
4233 unsigned long symndx)
4235 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4238 /* We may have one regular GOT entry or up to two TLS GOT
4242 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4243 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4245 BFD_ASSERT (local_got_refcounts != NULL);
4247 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4249 /* We can't have a variable referred to both as a regular
4250 variable and through TLS relocs. */
4251 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4252 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4256 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4259 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4264 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4265 if (hh->reg_got_refcount > 0)
4267 /* The actual error-on-input is emitted elsewhere. */
4268 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4272 if (hh->dtp_refcount > 0)
4275 if (hh->tprel_refcount > 0)
4279 /* We're only called when h->got.refcount is non-zero, so we must
4280 have a non-zero size. */
4281 BFD_ASSERT (eltsiz != 0);
4285 #define ELF_ARCH bfd_arch_cris
4286 #define ELF_MACHINE_CODE EM_CRIS
4287 #define ELF_MAXPAGESIZE 0x2000
4289 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4290 #define TARGET_LITTLE_NAME "elf32-cris"
4291 #define elf_symbol_leading_char 0
4293 #define elf_info_to_howto_rel NULL
4294 #define elf_info_to_howto cris_info_to_howto_rela
4295 #define elf_backend_relocate_section cris_elf_relocate_section
4296 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4297 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4298 #define elf_backend_check_relocs cris_elf_check_relocs
4299 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4300 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4302 #define elf_backend_can_gc_sections 1
4303 #define elf_backend_can_refcount 1
4305 #define elf_backend_object_p cris_elf_object_p
4306 #define elf_backend_final_write_processing \
4307 cris_elf_final_write_processing
4308 #define bfd_elf32_bfd_print_private_bfd_data \
4309 cris_elf_print_private_bfd_data
4310 #define bfd_elf32_bfd_merge_private_bfd_data \
4311 cris_elf_merge_private_bfd_data
4312 #define bfd_elf32_bfd_copy_private_bfd_data \
4313 cris_elf_copy_private_bfd_data
4315 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4316 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4318 #define bfd_elf32_bfd_link_hash_table_create \
4319 elf_cris_link_hash_table_create
4320 #define elf_backend_adjust_dynamic_symbol \
4321 elf_cris_adjust_dynamic_symbol
4322 #define elf_backend_copy_indirect_symbol \
4323 elf_cris_copy_indirect_symbol
4324 #define elf_backend_size_dynamic_sections \
4325 elf_cris_size_dynamic_sections
4326 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4327 #define elf_backend_finish_dynamic_symbol \
4328 elf_cris_finish_dynamic_symbol
4329 #define elf_backend_finish_dynamic_sections \
4330 elf_cris_finish_dynamic_sections
4331 #define elf_backend_create_dynamic_sections \
4332 _bfd_elf_create_dynamic_sections
4333 #define bfd_elf32_bfd_final_link \
4334 bfd_elf_gc_common_final_link
4335 #define elf_backend_hide_symbol elf_cris_hide_symbol
4336 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4338 #define elf_backend_want_got_plt 1
4339 #define elf_backend_plt_readonly 1
4340 #define elf_backend_want_plt_sym 0
4341 #define elf_backend_got_header_size 12
4342 #define elf_backend_got_elt_size elf_cris_got_elt_size
4344 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4345 linking and libraries (if it's a win of any significance). Until then,
4346 take the easy route. */
4347 #define elf_backend_may_use_rel_p 0
4348 #define elf_backend_may_use_rela_p 1
4349 #define elf_backend_rela_normal 1
4351 #include "elf32-target.h"
4353 #undef TARGET_LITTLE_SYM
4354 #undef TARGET_LITTLE_NAME
4355 #undef elf_symbol_leading_char
4357 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4358 #define TARGET_LITTLE_NAME "elf32-us-cris"
4359 #define elf_symbol_leading_char '_'
4361 #define elf32_bed elf32_us_cris_bed
4363 #include "elf32-target.h"