1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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)
442 /* Map BFD reloc types to CRIS ELF reloc types. */
444 struct cris_reloc_map
446 bfd_reloc_code_real_type bfd_reloc_val;
447 unsigned int cris_reloc_val;
450 static const struct cris_reloc_map cris_reloc_map [] =
452 { BFD_RELOC_NONE, R_CRIS_NONE },
453 { BFD_RELOC_8, R_CRIS_8 },
454 { BFD_RELOC_16, R_CRIS_16 },
455 { BFD_RELOC_32, R_CRIS_32 },
456 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
457 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
458 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
459 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
460 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
461 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
462 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
463 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
464 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
465 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
466 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
467 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
468 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
469 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
470 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
471 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
472 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
473 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
474 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
475 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
476 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
477 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
478 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
479 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
480 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
481 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
482 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD }
485 static reloc_howto_type *
486 cris_reloc_type_lookup (abfd, code)
487 bfd * abfd ATTRIBUTE_UNUSED;
488 bfd_reloc_code_real_type code;
492 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
493 if (cris_reloc_map [i].bfd_reloc_val == code)
494 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
499 static reloc_howto_type *
500 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
505 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
507 if (cris_elf_howto_table[i].name != NULL
508 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
509 return &cris_elf_howto_table[i];
514 /* Set the howto pointer for an CRIS ELF reloc. */
517 cris_info_to_howto_rela (abfd, cache_ptr, dst)
518 bfd * abfd ATTRIBUTE_UNUSED;
520 Elf_Internal_Rela * dst;
522 enum elf_cris_reloc_type r_type;
524 r_type = ELF32_R_TYPE (dst->r_info);
525 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
526 cache_ptr->howto = & cris_elf_howto_table [r_type];
529 bfd_reloc_status_type
530 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
531 output_bfd, error_message)
532 bfd *abfd ATTRIBUTE_UNUSED;
533 arelent *reloc_entry;
535 PTR data ATTRIBUTE_UNUSED;
536 asection *input_section;
538 char **error_message ATTRIBUTE_UNUSED;
540 /* By default (using only bfd_elf_generic_reloc when linking to
541 non-ELF formats) PC-relative relocs are relative to the beginning
542 of the reloc. CRIS PC-relative relocs are relative to the position
543 *after* the reloc because that's what pre-CRISv32 PC points to
544 after reading an insn field with that reloc. (For CRISv32, PC is
545 actually relative to the start of the insn, but we keep the old
546 definition.) Still, we use as much generic machinery as we can.
548 Only adjust when doing a final link. */
549 if (output_bfd == (bfd *) NULL)
550 reloc_entry->addend -= 1 << reloc_entry->howto->size;
553 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
554 input_section, output_bfd, error_message);
557 /* Support for core dump NOTE sections.
558 The slightly unintuitive code layout is an attempt to keep at least
559 some similarities with other ports, hoping to simplify general
560 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
563 cris_elf_grok_prstatus (abfd, note)
565 Elf_Internal_Note *note;
570 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
571 switch (note->descsz)
576 case 202: /* Linux/CRISv32 */
578 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
581 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
590 switch (note->descsz)
595 case 214: /* Linux/CRIS */
597 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
600 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
609 /* Make a ".reg/999" section. */
610 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
611 size, note->descpos + offset);
615 cris_elf_grok_psinfo (abfd, note)
617 Elf_Internal_Note *note;
619 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
620 switch (note->descsz)
625 case 124: /* Linux/CRISv32 elf_prpsinfo */
626 elf_tdata (abfd)->core_program
627 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
628 elf_tdata (abfd)->core_command
629 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
632 switch (note->descsz)
637 case 124: /* Linux/CRIS elf_prpsinfo */
638 elf_tdata (abfd)->core_program
639 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
640 elf_tdata (abfd)->core_command
641 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
644 /* Note that for some reason, a spurious space is tacked
645 onto the end of the args in some (at least one anyway)
646 implementations, so strip it off if it exists. */
649 char *command = elf_tdata (abfd)->core_command;
650 int n = strlen (command);
652 if (0 < n && command[n - 1] == ' ')
653 command[n - 1] = '\0';
659 /* The name of the dynamic interpreter. This is put in the .interp
662 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
664 /* The size in bytes of an entry in the procedure linkage table. */
666 #define PLT_ENTRY_SIZE 20
667 #define PLT_ENTRY_SIZE_V32 26
669 /* The first entry in an absolute procedure linkage table looks like this. */
671 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
674 0x7e, 0x7e, /* push mof. */
675 0x7f, 0x0d, /* (dip [pc+]) */
676 0, 0, 0, 0, /* Replaced with address of .got + 4. */
677 0x30, 0x7a, /* move [...],mof */
678 0x7f, 0x0d, /* (dip [pc+]) */
679 0, 0, 0, 0, /* Replaced with address of .got + 8. */
680 0x30, 0x09 /* jump [...] */
683 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
685 0x84, 0xe2, /* subq 4,$sp */
686 0x6f, 0xfe, /* move.d 0,$acr */
687 0, 0, 0, 0, /* Replaced by address of .got + 4. */
688 0x7e, 0x7a, /* move $mof,[$sp] */
689 0x3f, 0x7a, /* move [$acr],$mof */
690 0x04, 0xf2, /* addq 4,acr */
691 0x6f, 0xfa, /* move.d [$acr],$acr */
692 0xbf, 0x09, /* jump $acr */
693 0xb0, 0x05, /* nop */
694 0, 0 /* Pad out to 26 bytes. */
697 /* Subsequent entries in an absolute procedure linkage table look like
700 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
702 0x7f, 0x0d, /* (dip [pc+]) */
703 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
704 0x30, 0x09, /* jump [...] */
705 0x3f, 0x7e, /* move [pc+],mof */
706 0, 0, 0, 0, /* Replaced with offset into relocation table. */
707 0x2f, 0xfe, /* add.d [pc+],pc */
709 0xff, 0xff /* Replaced with offset to start of .plt. */
712 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
714 0x6f, 0xfe, /* move.d 0,$acr */
715 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
716 0x6f, 0xfa, /* move.d [$acr],$acr */
717 0xbf, 0x09, /* jump $acr */
718 0xb0, 0x05, /* nop */
719 0x3f, 0x7e, /* move 0,mof */
720 0, 0, 0, 0, /* Replaced with offset into relocation table. */
721 0xbf, 0x0e, /* ba start_of_plt0_entry */
722 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
726 /* The first entry in a PIC procedure linkage table looks like this. */
728 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
730 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
731 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
732 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
733 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
736 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
738 0x84, 0xe2, /* subq 4,$sp */
739 0x04, 0x01, /* addoq 4,$r0,$acr */
740 0x7e, 0x7a, /* move $mof,[$sp] */
741 0x3f, 0x7a, /* move [$acr],$mof */
742 0x04, 0xf2, /* addq 4,$acr */
743 0x6f, 0xfa, /* move.d [$acr],$acr */
744 0xbf, 0x09, /* jump $acr */
745 0xb0, 0x05, /* nop */
746 0, 0, /* Pad out to 26 bytes. */
751 /* Subsequent entries in a PIC procedure linkage table look like this. */
753 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
755 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
756 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
757 0x30, 0x09, /* jump [...] */
758 0x3f, 0x7e, /* move [pc+],mof */
759 0, 0, 0, 0, /* Replaced with offset into relocation table. */
760 0x2f, 0xfe, /* add.d [pc+],pc */
761 0xec, 0xff, /* Replaced with offset to start of .plt. */
765 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
767 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
768 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
769 0x6f, 0xfa, /* move.d [$acr],$acr */
770 0xbf, 0x09, /* jump $acr */
771 0xb0, 0x05, /* nop */
772 0x3f, 0x7e, /* move relocoffs,$mof */
773 0, 0, 0, 0, /* Replaced with offset into relocation table. */
774 0xbf, 0x0e, /* ba start_of_plt */
775 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
779 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
780 (and most other PIC/shlib stuff). Check that we don't drift away
783 The CRIS linker, like the m68k and i386 linkers (and probably the rest
784 too) needs to keep track of the number of relocs that it decides to
785 copy in check_relocs for each symbol. This is so that it can discard
786 PC relative relocs if it doesn't need them when linking with
787 -Bsymbolic. We store the information in a field extending the regular
788 ELF linker hash table. */
790 /* This structure keeps track of the number of PC relative relocs we have
791 copied for a given symbol. */
793 struct elf_cris_pcrel_relocs_copied
796 struct elf_cris_pcrel_relocs_copied *next;
798 /* A section in dynobj. */
801 /* Number of relocs copied in this section. */
804 /* Example of reloc being copied, for message. */
805 enum elf_cris_reloc_type r_type;
808 /* CRIS ELF linker hash entry. */
810 struct elf_cris_link_hash_entry
812 struct elf_link_hash_entry root;
814 /* Number of PC relative relocs copied for this symbol. */
815 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
817 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
818 both a general GOT and a PLT-specific GOT entry for the same symbol,
819 when it is referenced both as a function and as a function pointer.
821 Number of GOTPLT references for a function. */
822 bfd_signed_vma gotplt_refcount;
824 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
825 (zero is never used as an index). FIXME: We should be able to fold
826 this with gotplt_refcount in a union, like the got and plt unions in
827 elf_link_hash_entry. */
828 bfd_size_type gotplt_offset;
830 /* The root.got.refcount is the sum of the regular reference counts
831 (this) and those members below. We have to keep a separate count
832 to track when we've found the first (or last) reference to a
833 regular got entry. The offset is in root.got.offset. */
834 bfd_signed_vma reg_got_refcount;
836 /* Similar to the above, the number of reloc references to this
837 symbols that need a R_CRIS_32_TPREL slot. The offset is in
838 root.got.offset, because this and .dtp_refcount can't validly
839 happen when there's also a regular GOT entry; that's invalid
840 input for which an error is emitted. */
841 bfd_signed_vma tprel_refcount;
843 /* Similar to the above, the number of reloc references to this
844 symbols that need a R_CRIS_DTP slot. The offset is in
845 root.got.offset; plus 4 if .tprel_refcount > 0. */
846 bfd_signed_vma dtp_refcount;
849 /* The local_got_refcounts and local_got_offsets are a multiple of
850 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
851 refcount for GOT itself, see code), with the summary / group offset
852 for local symbols located at offset N, reference counts for
853 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
854 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
857 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
858 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
859 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
860 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
862 /* CRIS ELF linker hash table. */
864 struct elf_cris_link_hash_table
866 struct elf_link_hash_table root;
868 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
869 since we try and avoid creating GOTPLT:s when there's already a GOT.
870 Instead, we keep and update the next available index here. */
871 bfd_size_type next_gotplt_entry;
873 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
874 been seen for any input; if != 0, then the constant-offset
875 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
876 negative at relocation, so that we don't need an extra flag for
877 when the reloc is output. */
878 bfd_signed_vma dtpmod_refcount;
881 /* Traverse a CRIS ELF linker hash table. */
883 #define elf_cris_link_hash_traverse(table, func, info) \
884 (elf_link_hash_traverse \
886 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
889 /* Get the CRIS ELF linker hash table from a link_info structure. */
891 #define elf_cris_hash_table(p) \
892 ((struct elf_cris_link_hash_table *) (p)->hash)
894 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
895 "parent class"). The .root reference is just a simple type
896 check on the argument. */
898 #define elf_cris_hash_entry(p) \
899 ((struct elf_cris_link_hash_entry *) (&(p)->root))
901 /* Create an entry in a CRIS ELF linker hash table. */
903 static struct bfd_hash_entry *
904 elf_cris_link_hash_newfunc (entry, table, string)
905 struct bfd_hash_entry *entry;
906 struct bfd_hash_table *table;
909 struct elf_cris_link_hash_entry *ret =
910 (struct elf_cris_link_hash_entry *) entry;
912 /* Allocate the structure if it has not already been allocated by a
914 if (ret == (struct elf_cris_link_hash_entry *) NULL)
915 ret = ((struct elf_cris_link_hash_entry *)
916 bfd_hash_allocate (table,
917 sizeof (struct elf_cris_link_hash_entry)));
918 if (ret == (struct elf_cris_link_hash_entry *) NULL)
919 return (struct bfd_hash_entry *) ret;
921 /* Call the allocation method of the superclass. */
922 ret = ((struct elf_cris_link_hash_entry *)
923 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
925 if (ret != (struct elf_cris_link_hash_entry *) NULL)
927 ret->pcrel_relocs_copied = NULL;
928 ret->gotplt_refcount = 0;
929 ret->gotplt_offset = 0;
930 ret->dtp_refcount = 0;
931 ret->tprel_refcount = 0;
932 ret->reg_got_refcount = 0;
935 return (struct bfd_hash_entry *) ret;
938 /* Create a CRIS ELF linker hash table. */
940 static struct bfd_link_hash_table *
941 elf_cris_link_hash_table_create (abfd)
944 struct elf_cris_link_hash_table *ret;
945 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
947 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
948 if (ret == (struct elf_cris_link_hash_table *) NULL)
951 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
952 elf_cris_link_hash_newfunc,
953 sizeof (struct elf_cris_link_hash_entry)))
959 /* Initialize to skip over the first three entries in the gotplt; they
960 are used for run-time symbol evaluation. */
961 ret->next_gotplt_entry = 12;
963 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
964 ret->dtpmod_refcount = 0;
966 return &ret->root.root;
969 /* Perform a single relocation. By default we use the standard BFD
970 routines, with a few tweaks. */
972 static bfd_reloc_status_type
973 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
975 reloc_howto_type * howto;
977 asection * input_section;
979 Elf_Internal_Rela * rel;
982 bfd_reloc_status_type r;
983 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
985 /* PC-relative relocations are relative to the position *after*
986 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
987 not a single byte, since PC must be 16-bit-aligned. */
990 /* Check that the 16-bit GOT relocs are positive. */
991 case R_CRIS_16_GOTPLT:
993 if ((bfd_signed_vma) relocation < 0)
994 return bfd_reloc_overflow;
997 case R_CRIS_32_PLT_PCREL:
998 case R_CRIS_32_PCREL:
1001 case R_CRIS_8_PCREL:
1002 case R_CRIS_16_PCREL:
1010 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1011 contents, rel->r_offset,
1012 relocation, rel->r_addend);
1017 /* The number of errors left before we stop outputting reloc-specific
1018 explanatory messages. By coincidence, this works nicely together
1019 with the default number of messages you'll get from LD about
1020 "relocation truncated to fit" messages before you get an
1021 "additional relocation overflows omitted from the output". */
1022 static int additional_relocation_error_msg_count = 10;
1024 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1025 copied, for further comments. */
1028 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1029 contents, relocs, local_syms, local_sections)
1030 bfd *output_bfd ATTRIBUTE_UNUSED;
1031 struct bfd_link_info *info;
1033 asection *input_section;
1035 Elf_Internal_Rela *relocs;
1036 Elf_Internal_Sym *local_syms;
1037 asection **local_sections;
1040 Elf_Internal_Shdr *symtab_hdr;
1041 struct elf_link_hash_entry **sym_hashes;
1042 bfd_vma *local_got_offsets;
1046 Elf_Internal_Rela *rel;
1047 Elf_Internal_Rela *relend;
1050 dynobj = elf_hash_table (info)->dynobj;
1051 local_got_offsets = elf_local_got_offsets (input_bfd);
1052 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1053 sym_hashes = elf_sym_hashes (input_bfd);
1054 relend = relocs + input_section->reloc_count;
1063 splt = bfd_get_section_by_name (dynobj, ".plt");
1064 sgot = bfd_get_section_by_name (dynobj, ".got");
1067 for (rel = relocs; rel < relend; rel ++)
1069 reloc_howto_type *howto;
1070 unsigned long r_symndx;
1071 Elf_Internal_Sym *sym;
1073 struct elf_link_hash_entry *h;
1075 bfd_reloc_status_type r;
1076 const char *symname = NULL;
1077 enum elf_cris_reloc_type r_type;
1079 r_type = ELF32_R_TYPE (rel->r_info);
1081 if ( r_type == R_CRIS_GNU_VTINHERIT
1082 || r_type == R_CRIS_GNU_VTENTRY)
1085 r_symndx = ELF32_R_SYM (rel->r_info);
1086 howto = cris_elf_howto_table + r_type;
1091 if (r_symndx < symtab_hdr->sh_info)
1093 sym = local_syms + r_symndx;
1094 sec = local_sections [r_symndx];
1095 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1097 symname = (bfd_elf_string_from_elf_section
1098 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1099 if (symname == NULL)
1100 symname = bfd_section_name (input_bfd, sec);
1105 bfd_boolean unresolved_reloc;
1107 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1108 r_symndx, symtab_hdr, sym_hashes,
1110 unresolved_reloc, warned);
1112 symname = h->root.root.string;
1114 if (unresolved_reloc
1115 /* Perhaps we should detect the cases that
1116 sec->output_section is expected to be NULL like i386 and
1117 m68k, but apparently (and according to elfxx-ia64.c) all
1118 valid cases are where the symbol is defined in a shared
1119 object which we link dynamically against. This includes
1120 PLT relocs for which we've created a PLT entry and other
1121 relocs for which we're prepared to create dynamic
1124 For now, new situations cause us to just err when
1125 sec->output_offset is NULL but the object with the symbol
1126 is *not* dynamically linked against. Thus this will
1127 automatically remind us so we can see if there are other
1128 valid cases we need to revisit. */
1129 && (sec->owner->flags & DYNAMIC) != 0)
1132 else if (h->root.type == bfd_link_hash_defined
1133 || h->root.type == bfd_link_hash_defweak)
1135 /* Here follow the cases where the relocation value must
1136 be zero (or when further handling is simplified when
1137 zero). I can't claim to understand the various
1138 conditions and they weren't described in the files
1139 where I copied them from (elf32-m68k.c and
1140 elf32-i386.c), but let's mention examples of where
1141 they happen. FIXME: Perhaps define and use a
1142 dynamic_symbol_p function like ia64.
1144 - When creating a shared library, we can have an
1145 ordinary relocation for a symbol defined in a shared
1146 library (perhaps the one we create). We then make
1147 the relocation value zero, as the value seen now will
1148 be added into the relocation addend in this shared
1149 library, but must be handled only at dynamic-link
1150 time. FIXME: Not sure this example covers the
1151 h->elf_link_hash_flags test, though it's there in
1154 && ((! info->symbolic && h->dynindx != -1)
1156 && (input_section->flags & SEC_ALLOC) != 0
1157 && (r_type == R_CRIS_8
1158 || r_type == R_CRIS_16
1159 || r_type == R_CRIS_32
1160 || r_type == R_CRIS_8_PCREL
1161 || r_type == R_CRIS_16_PCREL
1162 || r_type == R_CRIS_32_PCREL))
1164 else if (!info->relocatable && unresolved_reloc)
1167 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1170 cris_elf_howto_table[r_type].name,
1172 bfd_set_error (bfd_error_bad_value);
1178 if (sec != NULL && elf_discarded_section (sec))
1180 /* For relocs against symbols from removed linkonce sections,
1181 or sections discarded by a linker script, we just want the
1182 section contents zeroed. Avoid any special processing. */
1183 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1189 if (info->relocatable)
1194 case R_CRIS_16_GOTPLT:
1195 case R_CRIS_32_GOTPLT:
1196 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1197 but we require a PLT, and the PLT handling will take care of
1198 filling in the PLT-specific GOT entry. For the GOT offset,
1199 calculate it as we do when filling it in for the .got.plt
1200 section. If we don't have a PLT, punt to GOT handling. */
1202 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1205 = bfd_get_section_by_name (dynobj, ".got.plt");
1208 BFD_ASSERT (h->dynindx != -1);
1209 BFD_ASSERT (sgotplt != NULL);
1212 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1214 relocation = got_offset;
1218 /* We didn't make a PLT entry for this symbol. Maybe everything is
1219 folded into the GOT. Other than folding, this happens when
1220 statically linking PIC code, or when using -Bsymbolic. Check
1221 that we instead have a GOT entry as done for us by
1222 elf_cris_adjust_dynamic_symbol, and drop through into the
1223 ordinary GOT cases. This must not happen for the
1224 executable, because any reference it does to a function
1225 that is satisfied by a DSO must generate a PLT. We assume
1226 these call-specific relocs don't address non-functions. */
1228 && (h->got.offset == (bfd_vma) -1
1232 && h->root.type == bfd_link_hash_undefweak)))))
1234 (*_bfd_error_handler)
1235 ((h->got.offset == (bfd_vma) -1)
1236 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1237 " against symbol `%s'")
1238 : _("%B, section %A: No PLT for relocation %s"
1239 " against symbol `%s'"),
1242 cris_elf_howto_table[r_type].name,
1243 (symname != NULL && symname[0] != '\0'
1244 ? symname : _("[whose name is lost]")));
1246 /* FIXME: Perhaps blaming input is not the right thing to
1247 do; this is probably an internal error. But it is true
1248 that we didn't like that particular input. */
1249 bfd_set_error (bfd_error_bad_value);
1254 /* The size of the actual relocation is not used here; we only
1255 fill in the GOT table here. */
1261 /* Note that despite using RELA relocations, the .got contents
1262 is always filled in with the link-relative relocation
1263 value; the addend. */
1267 off = h->got.offset;
1268 BFD_ASSERT (off != (bfd_vma) -1);
1270 if (!elf_hash_table (info)->dynamic_sections_created
1273 || h->type == STT_FUNC
1276 && (info->symbolic || h->dynindx == -1)
1279 /* This wasn't checked above for ! info->shared, but
1280 must hold there if we get here; the symbol must
1281 be defined in the regular program or be undefweak
1282 or be a function or otherwise need a PLT. */
1283 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1286 || h->type == STT_FUNC
1288 || h->root.type == bfd_link_hash_undefweak);
1290 /* This is actually a static link, or it is a
1291 -Bsymbolic link and the symbol is defined locally,
1292 or is undefweak, or the symbol was forced to be
1293 local because of a version file, or we're not
1294 creating a dynamic object. We must initialize this
1295 entry in the global offset table. Since the offset
1296 must always be a multiple of 4, we use the least
1297 significant bit to record whether we have
1298 initialized it already.
1300 If this GOT entry should be runtime-initialized, we
1301 will create a .rela.got relocation entry to
1302 initialize the value. This is done in the
1303 finish_dynamic_symbol routine. */
1308 bfd_put_32 (output_bfd, relocation,
1309 sgot->contents + off);
1316 BFD_ASSERT (local_got_offsets != NULL
1317 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1319 off = local_got_offsets[r_symndx];
1321 /* The offset must always be a multiple of 4. We use
1322 the least significant bit to record whether we have
1323 already generated the necessary reloc. */
1328 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1332 Elf_Internal_Rela outrel;
1335 if (srelgot == NULL)
1337 = bfd_get_section_by_name (dynobj, ".rela.got");
1338 BFD_ASSERT (srelgot != NULL);
1340 outrel.r_offset = (sgot->output_section->vma
1341 + sgot->output_offset
1343 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1344 outrel.r_addend = relocation;
1345 loc = srelgot->contents;
1346 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1347 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1350 local_got_offsets[r_symndx] |= 1;
1354 relocation = sgot->output_offset + off;
1355 if (rel->r_addend != 0)
1357 /* We can't do anything for a relocation which is against
1358 a symbol *plus offset*. GOT holds relocations for
1359 symbols. Make this an error; the compiler isn't
1360 allowed to pass us these kinds of things. */
1362 (*_bfd_error_handler)
1363 (_("%B, section %A: relocation %s with non-zero addend %d"
1364 " against local symbol"),
1367 cris_elf_howto_table[r_type].name,
1370 (*_bfd_error_handler)
1371 (_("%B, section %A: relocation %s with non-zero addend %d"
1372 " against symbol `%s'"),
1375 cris_elf_howto_table[r_type].name,
1377 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1379 bfd_set_error (bfd_error_bad_value);
1385 case R_CRIS_32_GOTREL:
1386 /* This relocation must only be performed against local symbols.
1387 It's also ok when we link a program and the symbol is either
1388 defined in an ordinary (non-DSO) object or is undefined weak. */
1390 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1394 && h->root.type == bfd_link_hash_undefweak))))
1396 (*_bfd_error_handler)
1397 (_("%B, section %A: relocation %s is"
1398 " not allowed for global symbol: `%s'"),
1401 cris_elf_howto_table[r_type].name,
1403 bfd_set_error (bfd_error_bad_value);
1407 /* This can happen if we get a link error with the input ELF
1408 variant mismatching the output variant. Emit an error so
1409 it's noticed if it happens elsewhere. */
1412 (*_bfd_error_handler)
1413 (_("%B, section %A: relocation %s with no GOT created"),
1416 cris_elf_howto_table[r_type].name);
1417 bfd_set_error (bfd_error_bad_value);
1421 /* This relocation is like a PC-relative one, except the
1422 reference point is the location of GOT. Note that
1423 sgot->output_offset is not involved in this calculation. We
1424 always want the start of entire .got section, not the
1425 position after the reserved header. */
1426 relocation -= sgot->output_section->vma;
1429 case R_CRIS_32_PLT_PCREL:
1430 /* Relocation is to the entry for this symbol in the
1431 procedure linkage table. */
1433 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1434 without using the procedure linkage table. */
1435 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1438 if (h->plt.offset == (bfd_vma) -1
1441 /* We didn't make a PLT entry for this symbol. This
1442 happens when statically linking PIC code, or when
1443 using -Bsymbolic. */
1447 relocation = (splt->output_section->vma
1448 + splt->output_offset
1452 case R_CRIS_32_PLT_GOTREL:
1453 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1454 start of the .got section. See also comment at
1456 relocation -= sgot->output_section->vma;
1458 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1459 without using the procedure linkage table. */
1460 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1463 if (h->plt.offset == (bfd_vma) -1
1466 /* We didn't make a PLT entry for this symbol. This
1467 happens when statically linking PIC code, or when
1468 using -Bsymbolic. */
1472 relocation = (splt->output_section->vma
1473 + splt->output_offset
1475 - sgot->output_section->vma);
1478 case R_CRIS_8_PCREL:
1479 case R_CRIS_16_PCREL:
1480 case R_CRIS_32_PCREL:
1481 /* If the symbol was local, we need no shlib-specific handling. */
1482 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1483 || h->dynindx == -1)
1492 && (input_section->flags & SEC_ALLOC) != 0
1493 && ((r_type != R_CRIS_8_PCREL
1494 && r_type != R_CRIS_16_PCREL
1495 && r_type != R_CRIS_32_PCREL)
1497 || (h != NULL && !h->def_regular))))
1499 Elf_Internal_Rela outrel;
1501 bfd_boolean skip, relocate;
1503 /* When generating a shared object, these relocations
1504 are copied into the output file to be resolved at run
1509 sreloc = _bfd_elf_get_dynamic_reloc_section
1510 (input_bfd, input_section, /*rela?*/ TRUE);
1511 /* The section should have been created in cris_elf_check_relocs,
1512 but that function will not be called for objects which fail in
1513 cris_elf_merge_private_bfd_data. */
1516 bfd_set_error (bfd_error_bad_value);
1525 _bfd_elf_section_offset (output_bfd, info, input_section,
1527 if (outrel.r_offset == (bfd_vma) -1)
1529 else if (outrel.r_offset == (bfd_vma) -2)
1530 skip = TRUE, relocate = TRUE;
1531 outrel.r_offset += (input_section->output_section->vma
1532 + input_section->output_offset);
1535 memset (&outrel, 0, sizeof outrel);
1536 /* h->dynindx may be -1 if the symbol was marked to
1539 && ((! info->symbolic && h->dynindx != -1)
1540 || !h->def_regular))
1542 BFD_ASSERT (h->dynindx != -1);
1543 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1544 outrel.r_addend = relocation + rel->r_addend;
1548 outrel.r_addend = relocation + rel->r_addend;
1550 if (r_type == R_CRIS_32)
1553 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1559 if (bfd_is_abs_section (sec))
1561 else if (sec == NULL || sec->owner == NULL)
1563 bfd_set_error (bfd_error_bad_value);
1570 /* We are turning this relocation into one
1571 against a section symbol. It would be
1572 proper to subtract the symbol's value,
1573 osec->vma, from the emitted reloc addend,
1574 but ld.so expects buggy relocs. */
1575 osec = sec->output_section;
1576 indx = elf_section_data (osec)->dynindx;
1579 struct elf_cris_link_hash_table *htab;
1580 htab = elf_cris_hash_table (info);
1581 osec = htab->root.text_index_section;
1582 indx = elf_section_data (osec)->dynindx;
1584 BFD_ASSERT (indx != 0);
1587 outrel.r_info = ELF32_R_INFO (indx, r_type);
1591 loc = sreloc->contents;
1592 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1593 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1595 /* This reloc will be computed at runtime, so there's no
1596 need to do anything now, except for R_CRIS_32 relocations
1597 that have been turned into R_CRIS_RELATIVE. */
1604 case R_CRIS_16_DTPREL:
1605 case R_CRIS_32_DTPREL:
1606 /* This relocation must only be performed against local
1607 symbols. It's also ok when we link a program and the
1608 symbol is defined in an ordinary (non-DSO) object (if
1609 it's undefined there, we've already seen an error). */
1611 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1614 && h->root.type != bfd_link_hash_undefined)))
1616 (*_bfd_error_handler)
1617 ((h->root.type == bfd_link_hash_undefined)
1618 /* We shouldn't get here for GCC-emitted code. */
1619 ? _("%B, section %A: relocation %s has an undefined"
1620 " reference to `%s', perhaps a declaration mixup?")
1621 : ("%B, section %A: relocation %s is"
1622 " not allowed for `%s', a global symbol with default"
1623 " visibility, perhaps a declaration mixup?"),
1626 cris_elf_howto_table[r_type].name,
1627 symname != NULL && symname[0] != '\0'
1628 ? symname : _("[whose name is lost]"));
1629 bfd_set_error (bfd_error_bad_value);
1633 BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1635 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1636 already done so. Note that we do this in .got.plt, not
1637 in .got, as .got.plt contains the first part, still the
1638 reloc is against .got, because the linker script directs
1639 (is required to direct) them both into .got. */
1640 if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1642 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1643 BFD_ASSERT (sgotplt != NULL);
1647 Elf_Internal_Rela outrel;
1650 if (srelgot == NULL)
1651 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1652 BFD_ASSERT (srelgot != NULL);
1653 loc = srelgot->contents;
1654 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1656 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1657 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1658 outrel.r_offset = (sgotplt->output_section->vma
1659 + sgotplt->output_offset
1661 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1662 outrel.r_addend = 0;
1663 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1667 /* For an executable, the GOT entry contents is known. */
1668 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1669 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1672 /* Reverse the sign to mark that we've emitted the
1673 required GOT entry. */
1674 elf_cris_hash_table (info)->dtpmod_refcount
1675 = -elf_cris_hash_table (info)->dtpmod_refcount;
1678 /* The thread-based offset to the local symbol is the
1680 relocation -= elf_hash_table (info)->tls_sec == NULL
1681 ? 0 : elf_hash_table (info)->tls_sec->vma;
1687 bfd_set_error (bfd_error_invalid_operation);
1689 /* We've already informed in cris_elf_check_relocs that
1690 this is an error. */
1695 case R_CRIS_16_GOT_GD:
1696 case R_CRIS_32_GOT_GD:
1697 if (rel->r_addend != 0)
1699 /* We can't do anything for a relocation which is against a
1700 symbol *plus offset*. The GOT holds relocations for
1701 symbols. Make this an error; the compiler isn't allowed
1702 to pass us these kinds of things. */
1703 (*_bfd_error_handler)
1704 (_("%B, section %A: relocation %s with non-zero addend %d"
1705 " against symbol `%s'"),
1708 cris_elf_howto_table[r_type].name,
1710 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1712 bfd_set_error (bfd_error_bad_value);
1716 if (!info->shared && (h == NULL || h->def_regular))
1718 /* Known contents of the GOT. */
1721 /* The symbol is defined in the program, so just write
1722 (1, known_tpoffset) into the GOT. */
1723 relocation -= elf_hash_table (info)->tls_sec->vma;
1727 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1728 ? h->got.offset + 4 : h->got.offset;
1732 off = local_got_offsets[r_symndx];
1733 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1737 /* We use bit 1 of the offset as a flag for GOT entry with
1738 the R_CRIS_DTP reloc, setting it when we've emitted the
1739 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1748 local_got_offsets[r_symndx] |= 2;
1750 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1751 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1756 relocation = sgot->output_offset + off
1757 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1761 /* Not all parts of the GOT entry are known; emit a real
1766 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1767 ? h->got.offset + 4 : h->got.offset;
1770 off = local_got_offsets[r_symndx];
1771 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1775 /* See above re bit 1 and bit 0 usage. */
1778 Elf_Internal_Rela outrel;
1786 local_got_offsets[r_symndx] |= 2;
1788 /* Clear the target contents of the GOT (just as a
1789 gesture; it's already cleared on allocation): this
1790 relocation is not like the other dynrelocs. */
1791 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1792 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1794 if (srelgot == NULL)
1795 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1796 BFD_ASSERT (srelgot != NULL);
1798 if (h != NULL && h->dynindx != -1)
1800 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1805 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1807 /* NULL if we had an error. */
1808 relocation -= elf_hash_table (info)->tls_sec == NULL
1809 ? 0 : elf_hash_table (info)->tls_sec->vma;
1812 outrel.r_offset = (sgot->output_section->vma
1813 + sgot->output_offset
1815 outrel.r_addend = relocation;
1816 loc = srelgot->contents;
1817 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1819 /* NULL if we had an error. */
1820 if (srelgot->contents != NULL)
1821 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1826 relocation = sgot->output_offset + off
1827 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1830 /* The GOT-relative offset to the GOT entry is the
1831 relocation, or for R_CRIS_32_GD, the actual address of
1835 case R_CRIS_32_GOT_TPREL:
1836 case R_CRIS_16_GOT_TPREL:
1837 if (rel->r_addend != 0)
1839 /* We can't do anything for a relocation which is
1840 against a symbol *plus offset*. GOT holds
1841 relocations for symbols. Make this an error; the
1842 compiler isn't allowed to pass us these kinds of
1844 (*_bfd_error_handler)
1845 (_("%B, section %A: relocation %s with non-zero addend %d"
1846 " against symbol `%s'"),
1849 cris_elf_howto_table[r_type].name,
1851 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1852 bfd_set_error (bfd_error_bad_value);
1856 if (!info->shared && (h == NULL || h->def_regular))
1858 /* Known contents of the GOT. */
1861 /* The symbol is defined in the program, so just write
1862 the known_tpoffset into the GOT. */
1863 relocation -= elf_hash_table (info)->tls_sec->vma;
1866 off = h->got.offset;
1868 off = local_got_offsets[r_symndx];
1870 /* Bit 0 is used to mark whether we've emitted the required
1871 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1872 is used similarly for R_CRIS_DTP, see above. */
1880 local_got_offsets[r_symndx] |= 1;
1882 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1887 relocation = sgot->output_offset + off;
1891 /* Emit a real relocation. */
1895 off = h->got.offset;
1897 off = local_got_offsets[r_symndx];
1899 /* See above re usage of bit 0 and 1. */
1902 Elf_Internal_Rela outrel;
1910 local_got_offsets[r_symndx] |= 1;
1912 if (srelgot == NULL)
1913 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1914 BFD_ASSERT (srelgot != NULL);
1916 if (h != NULL && h->dynindx != -1)
1918 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1923 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1925 /* NULL if we had an error. */
1926 relocation -= elf_hash_table (info)->tls_sec == NULL
1927 ? 0 : elf_hash_table (info)->tls_sec->vma;
1930 /* Just "define" the initial contents in some
1931 semi-logical way. */
1932 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1934 outrel.r_offset = (sgot->output_section->vma
1935 + sgot->output_offset
1937 outrel.r_addend = relocation;
1938 loc = srelgot->contents;
1939 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1940 /* NULL if we had an error. */
1941 if (srelgot->contents != NULL)
1942 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1947 relocation = sgot->output_offset + off;
1950 /* The GOT-relative offset to the GOT entry is the relocation. */
1953 case R_CRIS_16_TPREL:
1954 case R_CRIS_32_TPREL:
1955 /* This relocation must only be performed against symbols
1956 defined in an ordinary (non-DSO) object. */
1959 bfd_set_error (bfd_error_invalid_operation);
1961 /* We've already informed in cris_elf_check_relocs that
1962 this is an error. */
1967 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1969 /* If it's undefined, then an error message has already
1971 && h->root.type != bfd_link_hash_undefined)
1973 (*_bfd_error_handler)
1974 (_("%B, section %A: relocation %s is"
1975 " not allowed for symbol: `%s'"
1976 " which is defined outside the program,"
1977 " perhaps a declaration mixup?"),
1980 cris_elf_howto_table[r_type].name,
1982 bfd_set_error (bfd_error_bad_value);
1986 /* NULL if we had an error. */
1987 relocation -= elf_hash_table (info)->tls_sec == NULL
1988 ? 0 : elf_hash_table (info)->tls_sec->vma;
1990 /* The TLS-relative offset is the relocation. */
1998 r = cris_final_link_relocate (howto, input_bfd, input_section,
1999 contents, rel, relocation);
2001 if (r != bfd_reloc_ok)
2003 const char * msg = (const char *) NULL;
2007 case bfd_reloc_overflow:
2008 r = info->callbacks->reloc_overflow
2009 (info, (h ? &h->root : NULL), symname, howto->name,
2010 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2011 if (additional_relocation_error_msg_count > 0)
2013 additional_relocation_error_msg_count--;
2016 case R_CRIS_16_GOTPLT:
2019 /* Not just TLS is involved here, so we make
2020 generation and message depend on -fPIC/-fpic
2022 case R_CRIS_16_GOT_TPREL:
2023 case R_CRIS_16_GOT_GD:
2024 (*_bfd_error_handler)
2025 (_("(too many global variables for -fpic:"
2026 " recompile with -fPIC)"));
2029 case R_CRIS_16_TPREL:
2030 case R_CRIS_16_DTPREL:
2031 (*_bfd_error_handler)
2032 (_("(thread-local data too big for -fpic or"
2033 " -msmall-tls: recompile with -fPIC or"
2034 " -mno-small-tls)"));
2037 /* No known cause for overflow for other relocs. */
2044 case bfd_reloc_undefined:
2045 r = info->callbacks->undefined_symbol
2046 (info, symname, input_bfd, input_section, rel->r_offset,
2050 case bfd_reloc_outofrange:
2051 msg = _("internal error: out of range error");
2054 case bfd_reloc_notsupported:
2055 msg = _("internal error: unsupported relocation error");
2058 case bfd_reloc_dangerous:
2059 msg = _("internal error: dangerous relocation");
2063 msg = _("internal error: unknown error");
2068 r = info->callbacks->warning
2069 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2079 /* Finish up dynamic symbol handling. We set the contents of various
2080 dynamic sections here. */
2083 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2085 struct bfd_link_info *info;
2086 struct elf_link_hash_entry *h;
2087 Elf_Internal_Sym *sym;
2091 /* Where in the plt entry to put values. */
2092 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2094 /* What offset to add to the distance to the first PLT entry for the
2095 value at plt_off3. */
2096 int plt_off3_value_bias = 4;
2098 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2099 for PIC and non-PIC for v32 and pre-v32). */
2100 int plt_stub_offset = 8;
2101 int plt_entry_size = PLT_ENTRY_SIZE;
2102 const bfd_byte *plt_entry = elf_cris_plt_entry;
2103 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2105 /* Adjust the various PLT entry offsets. */
2106 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2110 plt_off3_value_bias = -2;
2111 plt_stub_offset = 12;
2112 plt_entry_size = PLT_ENTRY_SIZE_V32;
2113 plt_entry = elf_cris_plt_entry_v32;
2114 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2117 dynobj = elf_hash_table (info)->dynobj;
2119 if (h->plt.offset != (bfd_vma) -1)
2127 bfd_vma gotplt_offset
2128 = elf_cris_hash_entry (h)->gotplt_offset;
2129 Elf_Internal_Rela rela;
2131 bfd_boolean has_gotplt = gotplt_offset != 0;
2133 /* Get the index in the procedure linkage table which
2134 corresponds to this symbol. This is the index of this symbol
2135 in all the symbols for which we are making plt entries. The
2136 first entry in the procedure linkage table is reserved. */
2137 /* We have to count backwards here, and the result is only valid as
2138 an index into .got.plt and its relocations. FIXME: Constants... */
2139 bfd_vma gotplt_index = gotplt_offset/4 - 3;
2141 /* Get the offset into the .got table of the entry that corresponds
2142 to this function. Note that we embed knowledge that "incoming"
2143 .got goes after .got.plt in the output without padding (pointer
2144 aligned). However, that knowledge is present in several other
2149 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2151 /* This symbol has an entry in the procedure linkage table. Set it
2154 BFD_ASSERT (h->dynindx != -1);
2156 splt = bfd_get_section_by_name (dynobj, ".plt");
2157 sgot = bfd_get_section_by_name (dynobj, ".got");
2158 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2159 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2160 BFD_ASSERT (splt != NULL && sgotplt != NULL
2161 && (! has_gotplt || srela != NULL));
2163 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2165 /* Fill in the entry in the procedure linkage table. */
2168 memcpy (splt->contents + h->plt.offset, plt_entry,
2171 /* We need to enter the absolute address of the GOT entry here. */
2172 bfd_put_32 (output_bfd, got_base + got_offset,
2173 splt->contents + h->plt.offset + plt_off1);
2177 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2179 bfd_put_32 (output_bfd, got_offset,
2180 splt->contents + h->plt.offset + plt_off1);
2183 /* Fill in the plt entry and make a relocation, if this is a "real"
2187 /* Fill in the offset to the reloc table. */
2188 bfd_put_32 (output_bfd,
2189 gotplt_index * sizeof (Elf32_External_Rela),
2190 splt->contents + h->plt.offset + plt_off2);
2192 /* Fill in the offset to the first PLT entry, where to "jump". */
2193 bfd_put_32 (output_bfd,
2194 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2195 splt->contents + h->plt.offset + plt_off3);
2197 /* Fill in the entry in the global offset table with the address of
2198 the relocating stub. */
2199 bfd_put_32 (output_bfd,
2200 (splt->output_section->vma
2201 + splt->output_offset
2204 sgotplt->contents + got_offset);
2206 /* Fill in the entry in the .rela.plt section. */
2207 rela.r_offset = (sgotplt->output_section->vma
2208 + sgotplt->output_offset
2210 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2212 loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela);
2213 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2216 if (!h->def_regular)
2218 /* Mark the symbol as undefined, rather than as defined in
2219 the .plt section. Leave the value alone. */
2220 sym->st_shndx = SHN_UNDEF;
2222 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2223 know whether resetting the value is significant; if it really
2224 is, rather than a quirk or bug in the sparc port, then I
2225 believe we'd see this elsewhere. */
2226 /* If the symbol is weak, we do need to clear the value.
2227 Otherwise, the PLT entry would provide a definition for
2228 the symbol even if the symbol wasn't defined anywhere,
2229 and so the symbol would never be NULL. */
2230 if (!h->ref_regular_nonweak)
2235 /* For an ordinary program, we emit .got relocs only for symbols that
2236 are in the dynamic-symbols table and are either defined by the
2237 program or are undefined weak symbols, or are function symbols
2238 where we do not output a PLT: the PLT reloc was output above and all
2239 references to the function symbol are redirected to the PLT. */
2240 if (h->got.offset != (bfd_vma) -1
2241 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2243 || (h->dynindx != -1
2244 && h->plt.offset == (bfd_vma) -1
2246 && h->root.type != bfd_link_hash_undefweak)))
2250 Elf_Internal_Rela rela;
2254 /* This symbol has an entry in the global offset table. Set it up. */
2256 sgot = bfd_get_section_by_name (dynobj, ".got");
2257 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2258 BFD_ASSERT (sgot != NULL && srela != NULL);
2260 rela.r_offset = (sgot->output_section->vma
2261 + sgot->output_offset
2262 + (h->got.offset &~ (bfd_vma) 1));
2264 /* If this is a static link, or it is a -Bsymbolic link and the
2265 symbol is defined locally or was forced to be local because
2266 of a version file, we just want to emit a RELATIVE reloc.
2267 The entry in the global offset table will already have been
2268 initialized in the relocate_section function. */
2269 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2270 if (! elf_hash_table (info)->dynamic_sections_created
2272 && (info->symbolic || h->dynindx == -1)
2275 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2276 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2280 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2281 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2285 loc = srela->contents;
2286 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2287 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2293 Elf_Internal_Rela rela;
2296 /* This symbol needs a copy reloc. Set it up. */
2298 BFD_ASSERT (h->dynindx != -1
2299 && (h->root.type == bfd_link_hash_defined
2300 || h->root.type == bfd_link_hash_defweak));
2302 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2304 BFD_ASSERT (s != NULL);
2306 rela.r_offset = (h->root.u.def.value
2307 + h->root.u.def.section->output_section->vma
2308 + h->root.u.def.section->output_offset);
2309 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2311 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2312 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2315 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2316 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2317 || h == elf_hash_table (info)->hgot)
2318 sym->st_shndx = SHN_ABS;
2323 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2324 offsets were changed, as part of -z combreloc handling, from those we
2328 elf_cris_finish_dynamic_sections (output_bfd, info)
2330 struct bfd_link_info *info;
2336 dynobj = elf_hash_table (info)->dynobj;
2338 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2339 BFD_ASSERT (sgot != NULL);
2340 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2342 if (elf_hash_table (info)->dynamic_sections_created)
2345 Elf32_External_Dyn *dyncon, *dynconend;
2347 splt = bfd_get_section_by_name (dynobj, ".plt");
2348 BFD_ASSERT (splt != NULL && sdyn != NULL);
2350 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2351 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2352 for (; dyncon < dynconend; dyncon++)
2354 Elf_Internal_Dyn dyn;
2357 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2365 s = bfd_get_section_by_name (output_bfd, ".got");
2366 BFD_ASSERT (s != NULL);
2367 dyn.d_un.d_ptr = s->vma;
2368 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2372 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2373 if all symbols are found in the .got (not .got.plt). */
2374 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2375 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2376 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2380 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2384 dyn.d_un.d_val = s->size;
2385 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2389 /* The procedure linkage table relocs (DT_JMPREL) should
2390 not be included in the overall relocs (DT_RELA).
2391 Therefore, we override the DT_RELASZ entry here to
2392 make it not include the JMPREL relocs. Since the
2393 linker script arranges for .rela.plt to follow all
2394 other relocation sections, we don't have to worry
2395 about changing the DT_RELA entry. */
2396 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2398 dyn.d_un.d_val -= s->size;
2399 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2404 /* Fill in the first entry in the procedure linkage table. */
2407 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2410 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2411 PLT_ENTRY_SIZE_V32);
2414 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2415 PLT_ENTRY_SIZE_V32);
2416 bfd_put_32 (output_bfd,
2417 sgot->output_section->vma
2418 + sgot->output_offset + 4,
2419 splt->contents + 4);
2421 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2422 = PLT_ENTRY_SIZE_V32;
2428 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2432 memcpy (splt->contents, elf_cris_plt0_entry,
2434 bfd_put_32 (output_bfd,
2435 sgot->output_section->vma
2436 + sgot->output_offset + 4,
2437 splt->contents + 6);
2438 bfd_put_32 (output_bfd,
2439 sgot->output_section->vma
2440 + sgot->output_offset + 8,
2441 splt->contents + 14);
2443 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2450 /* Fill in the first three entries in the global offset table. */
2454 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2456 bfd_put_32 (output_bfd,
2457 sdyn->output_section->vma + sdyn->output_offset,
2459 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2460 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2463 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2468 /* Return the section that should be marked against GC for a given
2472 cris_elf_gc_mark_hook (asection *sec,
2473 struct bfd_link_info *info,
2474 Elf_Internal_Rela *rel,
2475 struct elf_link_hash_entry *h,
2476 Elf_Internal_Sym *sym)
2478 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2482 case R_CRIS_GNU_VTINHERIT:
2483 case R_CRIS_GNU_VTENTRY:
2490 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2493 /* Update the got entry reference counts for the section being removed. */
2496 cris_elf_gc_sweep_hook (bfd *abfd,
2497 struct bfd_link_info *info,
2499 const Elf_Internal_Rela *relocs)
2501 Elf_Internal_Shdr *symtab_hdr;
2502 struct elf_link_hash_entry **sym_hashes;
2503 bfd_signed_vma *local_got_refcounts;
2504 const Elf_Internal_Rela *rel, *relend;
2509 if (info->relocatable)
2512 dynobj = elf_hash_table (info)->dynobj;
2516 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2517 sym_hashes = elf_sym_hashes (abfd);
2518 local_got_refcounts = elf_local_got_refcounts (abfd);
2520 sgot = bfd_get_section_by_name (dynobj, ".got");
2521 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2523 relend = relocs + sec->reloc_count;
2524 for (rel = relocs; rel < relend; rel++)
2526 unsigned long r_symndx;
2527 struct elf_link_hash_entry *h = NULL;
2528 bfd_signed_vma got_element_size = 4;
2529 bfd_signed_vma *specific_refcount = NULL;
2530 enum elf_cris_reloc_type r_type;
2532 r_symndx = ELF32_R_SYM (rel->r_info);
2533 if (r_symndx >= symtab_hdr->sh_info)
2535 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2536 while (h->root.type == bfd_link_hash_indirect
2537 || h->root.type == bfd_link_hash_warning)
2538 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2541 r_type = ELF32_R_TYPE (rel->r_info);
2546 case R_CRIS_16_GOTPLT:
2547 case R_CRIS_32_GOTPLT:
2548 specific_refcount = h != NULL
2549 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2550 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2554 case R_CRIS_32_GOT_GD:
2555 case R_CRIS_16_GOT_GD:
2556 got_element_size = 8;
2557 specific_refcount = h != NULL
2558 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2559 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2562 case R_CRIS_16_GOT_TPREL:
2563 case R_CRIS_32_GOT_TPREL:
2564 specific_refcount = h != NULL
2565 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2566 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2576 case R_CRIS_16_GOT_TPREL:
2577 case R_CRIS_32_GOT_TPREL:
2578 case R_CRIS_32_GOT_GD:
2579 case R_CRIS_16_GOT_GD:
2584 /* If the counters are 0 when we got here, we've
2585 miscounted somehow somewhere, an internal error. */
2586 BFD_ASSERT (h->got.refcount > 0);
2589 BFD_ASSERT (*specific_refcount > 0);
2590 --*specific_refcount;
2591 if (*specific_refcount == 0)
2593 /* We don't need the .got entry any more. */
2594 sgot->size -= got_element_size;
2595 srelgot->size -= sizeof (Elf32_External_Rela);
2601 if (local_got_refcounts != NULL)
2603 /* If the counters are 0 when we got here, we've
2604 miscounted somehow somewhere, an internal error. */
2605 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2606 --local_got_refcounts[r_symndx];
2608 BFD_ASSERT (*specific_refcount > 0);
2609 --*specific_refcount;
2610 if (*specific_refcount == 0)
2612 /* We don't need the .got entry any more. */
2613 sgot->size -= got_element_size;
2615 srelgot->size -= sizeof (Elf32_External_Rela);
2620 case R_CRIS_16_GOTPLT:
2621 case R_CRIS_32_GOTPLT:
2622 /* For local symbols, treat these like GOT relocs. */
2624 goto local_got_reloc;
2627 case R_CRIS_32_PLT_GOTREL:
2628 /* FIXME: We don't garbage-collect away the .got section. */
2629 if (local_got_refcounts != NULL)
2630 local_got_refcounts[-1]--;
2633 case R_CRIS_8_PCREL:
2634 case R_CRIS_16_PCREL:
2635 case R_CRIS_32_PCREL:
2636 case R_CRIS_32_PLT_PCREL:
2639 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2640 && h->plt.refcount > 0)
2645 case R_CRIS_32_DTPREL:
2646 case R_CRIS_16_DTPREL:
2647 elf_cris_hash_table (info)->dtpmod_refcount--;
2648 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2649 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2650 BFD_ASSERT (local_got_refcounts != NULL);
2651 local_got_refcounts[-1]--;
2662 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2663 entry but we found we will not create any. Called when we find we will
2664 not have any PLT for this symbol, by for example
2665 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2666 or elf_cris_size_dynamic_sections if no dynamic sections will be
2667 created (we're only linking static objects). */
2670 elf_cris_adjust_gotplt_to_got (h, p)
2671 struct elf_cris_link_hash_entry *h;
2674 struct bfd_link_info *info = (struct bfd_link_info *) p;
2676 if (h->root.root.type == bfd_link_hash_warning)
2677 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2679 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2680 if (h->gotplt_refcount <= 0)
2683 if (h->reg_got_refcount > 0)
2685 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2686 Probably not necessary at this stage, but keeping them accurate
2687 helps avoiding surprises later. */
2688 h->root.got.refcount += h->gotplt_refcount;
2689 h->reg_got_refcount += h->gotplt_refcount;
2690 h->gotplt_refcount = 0;
2694 /* No GOT entry for this symbol. We need to create one. */
2695 bfd *dynobj = elf_hash_table (info)->dynobj;
2699 BFD_ASSERT (dynobj != NULL);
2700 sgot = bfd_get_section_by_name (dynobj, ".got");
2701 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2703 /* Put accurate refcounts there. */
2704 h->root.got.refcount += h->gotplt_refcount;
2705 h->reg_got_refcount = h->gotplt_refcount;
2707 h->gotplt_refcount = 0;
2709 /* We always have a .got and a .rela.got section if there were
2710 GOTPLT relocs in input. */
2711 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2713 /* Allocate space in the .got section. */
2716 /* Allocate relocation space. */
2717 srelgot->size += sizeof (Elf32_External_Rela);
2723 /* Try to fold PLT entries with GOT entries. There are two cases when we
2726 - When all PLT references are GOTPLT references, and there are GOT
2727 references, and this is not the executable. We don't have to
2728 generate a PLT at all.
2730 - When there are both (ordinary) PLT references and GOT references,
2731 and this isn't the executable.
2732 We want to make the PLT reference use the ordinary GOT entry rather
2733 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2734 since the GOT entry will have to be resolved at startup anyway.
2736 Though the latter case is handled when room for the PLT is allocated,
2739 By folding into the GOT, we may need a round-trip to a PLT in the
2740 executable for calls, a loss in performance. Still, losing a
2741 reloc is a win in size and at least in start-up time.
2743 Note that this function is called before symbols are forced local by
2744 version scripts. The differing cases are handled by
2745 elf_cris_hide_symbol. */
2748 elf_cris_try_fold_plt_to_got (h, p)
2749 struct elf_cris_link_hash_entry *h;
2752 struct bfd_link_info *info = (struct bfd_link_info *) p;
2754 /* If there are no GOT references for this symbol, we can't fold any
2755 other reference so there's nothing to do. Likewise if there are no
2756 PLT references; GOTPLT references included. */
2757 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2760 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2761 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2763 if (h->gotplt_refcount == h->root.plt.refcount)
2765 /* The only PLT references are GOTPLT references, and there are GOT
2766 references. Convert PLT to GOT references. */
2767 if (! elf_cris_adjust_gotplt_to_got (h, info))
2770 /* Clear the PLT references, so no PLT will be created. */
2771 h->root.plt.offset = (bfd_vma) -1;
2777 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2778 to use a GOT entry (and create one) rather than requiring a GOTPLT
2782 elf_cris_hide_symbol (info, h, force_local)
2783 struct bfd_link_info *info;
2784 struct elf_link_hash_entry *h;
2785 bfd_boolean force_local;
2787 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2789 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2792 /* Adjust a symbol defined by a dynamic object and referenced by a
2793 regular object. The current definition is in some section of the
2794 dynamic object, but we're not including those sections. We have to
2795 change the definition to something the rest of the link can
2799 elf_cris_adjust_dynamic_symbol (info, h)
2800 struct bfd_link_info *info;
2801 struct elf_link_hash_entry *h;
2805 bfd_size_type plt_entry_size;
2807 dynobj = elf_hash_table (info)->dynobj;
2809 /* Make sure we know what is going on here. */
2810 BFD_ASSERT (dynobj != NULL
2812 || h->u.weakdef != NULL
2815 && !h->def_regular)));
2818 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2819 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2821 /* If this is a function, put it in the procedure linkage table. We
2822 will fill in the contents of the procedure linkage table later,
2823 when we know the address of the .got section. */
2824 if (h->type == STT_FUNC
2827 /* If we link a program (not a DSO), we'll get rid of unnecessary
2828 PLT entries; we point to the actual symbols -- even for pic
2829 relocs, because a program built with -fpic should have the same
2830 result as one built without -fpic, specifically considering weak
2832 FIXME: m68k and i386 differ here, for unclear reasons. */
2836 /* This case can occur if we saw a PLT reloc in an input file,
2837 but the symbol was not defined by a dynamic object. In such
2838 a case, we don't actually need to build a procedure linkage
2839 table, and we can just do an absolute or PC reloc instead, or
2840 change a .got.plt index to a .got index for GOTPLT relocs. */
2841 BFD_ASSERT (h->needs_plt);
2843 h->plt.offset = (bfd_vma) -1;
2845 elf_cris_adjust_gotplt_to_got ((struct
2846 elf_cris_link_hash_entry *) h,
2850 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2851 where a pointer-equivalent symbol was unimportant (i.e. more
2852 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2853 of the PLT. We can't for the executable, because the GOT
2854 entries will point to the PLT there (and be constant). */
2856 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2860 /* GC or folding may have rendered this entry unused. */
2861 if (h->plt.refcount <= 0)
2864 h->plt.offset = (bfd_vma) -1;
2868 /* Make sure this symbol is output as a dynamic symbol. */
2869 if (h->dynindx == -1)
2871 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2875 s = bfd_get_section_by_name (dynobj, ".plt");
2876 BFD_ASSERT (s != NULL);
2878 /* If this is the first .plt entry, make room for the special
2881 s->size += plt_entry_size;
2883 /* If this symbol is not defined in a regular file, and we are
2884 not generating a shared library, then set the symbol to this
2885 location in the .plt. */
2889 h->root.u.def.section = s;
2890 h->root.u.def.value = s->size;
2893 /* If there's already a GOT entry, use that, not a .got.plt. A
2894 GOT field still has a reference count when we get here; it's
2895 not yet changed to an offset. We can't do this for an
2896 executable, because then the reloc associated with the PLT
2897 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2898 this to elf_cris_try_fold_plt_to_got. */
2899 if (info->shared && h->got.refcount > 0)
2901 h->got.refcount += h->plt.refcount;
2903 /* Mark the PLT offset to use the GOT entry by setting the low
2904 bit in the plt offset; it is always a multiple of
2905 plt_entry_size (which is at least a multiple of 2). */
2906 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2908 /* Change the PLT refcount to an offset. */
2909 h->plt.offset = s->size;
2911 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2912 that the got entry should be used instead. */
2913 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2914 h)->gotplt_offset == 0);
2916 /* Make room for this entry. */
2917 s->size += plt_entry_size;
2922 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2923 h->plt.offset = s->size;
2925 /* Make room for this entry. */
2926 s->size += plt_entry_size;
2928 /* We also need to make an entry in the .got.plt section, which
2929 will be placed in the .got section by the linker script. */
2930 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2931 = elf_cris_hash_table (info)->next_gotplt_entry;
2932 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2934 s = bfd_get_section_by_name (dynobj, ".got.plt");
2935 BFD_ASSERT (s != NULL);
2938 /* We also need to make an entry in the .rela.plt section. */
2940 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2941 BFD_ASSERT (s != NULL);
2942 s->size += sizeof (Elf32_External_Rela);
2947 /* Reinitialize the plt offset now that it is not used as a reference
2949 h->plt.offset = (bfd_vma) -1;
2951 /* If this is a weak symbol, and there is a real definition, the
2952 processor independent code will have arranged for us to see the
2953 real definition first, and we can just use the same value. */
2954 if (h->u.weakdef != NULL)
2956 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2957 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2958 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2959 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2963 /* This is a reference to a symbol defined by a dynamic object which
2964 is not a function. */
2966 /* If we are creating a shared library, we must presume that the
2967 only references to the symbol are via the global offset table.
2968 For such cases we need not do anything here; the relocations will
2969 be handled correctly by relocate_section. */
2973 /* If there are no references to this symbol that do not use the
2974 GOT, we don't need to generate a copy reloc. */
2975 if (!h->non_got_ref)
2980 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2981 h->root.root.string);
2985 /* We must allocate the symbol in our .dynbss section, which will
2986 become part of the .bss section of the executable. There will be
2987 an entry for this symbol in the .dynsym section. The dynamic
2988 object will contain position independent code, so all references
2989 from the dynamic object to this symbol will go through the global
2990 offset table. The dynamic linker will use the .dynsym entry to
2991 determine the address it must put in the global offset table, so
2992 both the dynamic object and the regular object will refer to the
2993 same memory location for the variable. */
2995 s = bfd_get_section_by_name (dynobj, ".dynbss");
2996 BFD_ASSERT (s != NULL);
2998 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2999 copy the initial value out of the dynamic object and into the
3000 runtime process image. We need to remember the offset into the
3001 .rela.bss section we are going to use. */
3002 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3006 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3007 BFD_ASSERT (srel != NULL);
3008 srel->size += sizeof (Elf32_External_Rela);
3012 return _bfd_elf_adjust_dynamic_copy (h, s);
3015 /* Adjust our "subclass" elements for an indirect symbol. */
3018 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3019 struct elf_link_hash_entry *dir,
3020 struct elf_link_hash_entry *ind)
3022 struct elf_cris_link_hash_entry *edir, *eind;
3024 edir = (struct elf_cris_link_hash_entry *) dir;
3025 eind = (struct elf_cris_link_hash_entry *) ind;
3027 /* Only indirect symbols are replaced; we're not interested in
3028 updating any of EIND's fields for other symbols. */
3029 if (eind->root.root.type != bfd_link_hash_indirect)
3032 BFD_ASSERT (edir->pcrel_relocs_copied == NULL);
3033 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3035 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3036 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3037 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3038 XMOVE (gotplt_refcount);
3039 XMOVE (gotplt_offset);
3040 XMOVE (reg_got_refcount);
3041 XMOVE (tprel_refcount);
3042 XMOVE (dtp_refcount);
3046 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3049 /* Look through the relocs for a section during the first phase. */
3052 cris_elf_check_relocs (abfd, info, sec, relocs)
3054 struct bfd_link_info *info;
3056 const Elf_Internal_Rela *relocs;
3059 Elf_Internal_Shdr *symtab_hdr;
3060 struct elf_link_hash_entry **sym_hashes;
3061 bfd_signed_vma *local_got_refcounts;
3062 const Elf_Internal_Rela *rel;
3063 const Elf_Internal_Rela *rel_end;
3068 if (info->relocatable)
3071 dynobj = elf_hash_table (info)->dynobj;
3072 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3073 sym_hashes = elf_sym_hashes (abfd);
3074 local_got_refcounts = elf_local_got_refcounts (abfd);
3080 rel_end = relocs + sec->reloc_count;
3081 for (rel = relocs; rel < rel_end; rel++)
3083 struct elf_link_hash_entry *h;
3084 unsigned long r_symndx;
3085 enum elf_cris_reloc_type r_type;
3086 bfd_signed_vma got_element_size = 4;
3087 unsigned long r_symndx_lgot = INT_MAX;
3089 r_symndx = ELF32_R_SYM (rel->r_info);
3090 if (r_symndx < symtab_hdr->sh_info)
3093 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3097 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3098 while (h->root.type == bfd_link_hash_indirect
3099 || h->root.type == bfd_link_hash_warning)
3100 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3103 r_type = ELF32_R_TYPE (rel->r_info);
3105 /* Some relocs require linker-created sections; we need to hang them
3106 on the first input bfd we found that contained dynamic relocs. */
3109 case R_CRIS_16_DTPREL:
3110 case R_CRIS_32_DTPREL:
3111 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3112 entry at index 3. */
3113 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3114 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3115 elf_cris_hash_table (info)->dtpmod_refcount++;
3119 case R_CRIS_16_GOT_GD:
3120 case R_CRIS_32_GOT_GD:
3121 case R_CRIS_32_GOT_TPREL:
3122 case R_CRIS_16_GOT_TPREL:
3125 case R_CRIS_32_GOTREL:
3126 case R_CRIS_32_PLT_GOTREL:
3127 case R_CRIS_32_PLT_PCREL:
3128 case R_CRIS_16_GOTPLT:
3129 case R_CRIS_32_GOTPLT:
3132 elf_hash_table (info)->dynobj = dynobj = abfd;
3134 /* We could handle this if we can get a handle on the
3135 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3136 that, we must insist on dynobj being a specific mach. */
3137 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3139 (*_bfd_error_handler)
3140 (_("%B, section %A:\n v10/v32 compatible object %s"
3141 " must not contain a PIC relocation"),
3146 /* Create the .got section, so we can assume it's always
3147 present whenever there's a dynobj. */
3148 if (!_bfd_elf_create_got_section (dynobj, info))
3153 sgot = bfd_get_section_by_name (dynobj, ".got");
3155 if (local_got_refcounts == NULL)
3159 /* We use index local_got_refcounts[-1] to count all
3160 GOT-relative relocations that do not have explicit
3162 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3163 amt *= sizeof (bfd_signed_vma);
3164 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3165 if (local_got_refcounts == NULL)
3168 local_got_refcounts++;
3169 elf_local_got_refcounts (abfd) = local_got_refcounts;
3177 /* Some relocs require a global offset table (but perhaps not a
3178 specific GOT entry). */
3181 case R_CRIS_16_DTPREL:
3182 case R_CRIS_32_DTPREL:
3183 /* Not requesting .got.rela for an executable: the contents
3184 of the first entry is constant there. For a shared
3185 library, we need .got.rela for the R_CRIS_DTPMOD
3186 relocation at index 3. */
3192 case R_CRIS_16_GOT_GD:
3193 case R_CRIS_32_GOT_GD:
3194 case R_CRIS_32_GOT_TPREL:
3195 case R_CRIS_16_GOT_TPREL:
3198 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3199 entry only for local symbols. Unfortunately, we don't know
3200 until later on if there's a version script that forces the
3201 symbol local. We must have the .rela.got section in place
3202 before we know if the symbol looks global now, so we need
3203 to treat the reloc just like for R_CRIS_16_GOT and
3205 case R_CRIS_16_GOTPLT:
3206 case R_CRIS_32_GOTPLT:
3210 && (h != NULL || info->shared))
3212 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3213 if (srelgot == NULL)
3215 srelgot = bfd_make_section_with_flags (dynobj,
3221 | SEC_LINKER_CREATED
3224 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3234 /* Warn and error for invalid input. */
3237 case R_CRIS_32_TPREL:
3238 case R_CRIS_16_TPREL:
3242 (*_bfd_error_handler)
3243 (_("%B, section %A:\n relocation %s not valid"
3244 " in a shared object;"
3245 " typically an option mixup, recompile with -fPIC"),
3248 cris_elf_howto_table[r_type].name);
3249 /* Don't return FALSE here; we want messages for all of
3250 these and the error behavior is ungraceful
3260 case R_CRIS_16_GOT_GD:
3261 case R_CRIS_32_GOT_GD:
3262 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3263 got_element_size = 8;
3264 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3267 case R_CRIS_16_DTPREL:
3268 case R_CRIS_32_DTPREL:
3269 /* These two just request for the constant-index
3270 module-local tls_index-sized GOT entry, which we add
3274 case R_CRIS_32_GOT_TPREL:
3275 case R_CRIS_16_GOT_TPREL:
3276 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3278 /* Those two relocs also require that a DSO is of type
3279 Initial Exec. Like other targets, we don't reset this
3280 flag even if the relocs are GC:ed away. */
3282 info->flags |= DF_STATIC_TLS;
3285 /* Let's list the other assembler-generated TLS-relocs too,
3286 just to show that they're not forgotten. */
3287 case R_CRIS_16_TPREL:
3288 case R_CRIS_32_TPREL:
3295 case R_CRIS_16_GOTPLT:
3296 case R_CRIS_32_GOTPLT:
3297 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3298 entry) is eliminated. We can only do this for a non-local
3302 elf_cris_hash_entry (h)->gotplt_refcount++;
3303 goto handle_gotplt_reloc;
3305 /* If h is NULL then this is a local symbol, and we must make a
3306 GOT entry for it, so handle it like a GOT reloc. */
3310 case R_CRIS_16_GOT_GD:
3311 case R_CRIS_32_GOT_GD:
3312 case R_CRIS_32_GOT_TPREL:
3313 case R_CRIS_16_GOT_TPREL:
3316 /* This symbol requires a global offset table entry. */
3319 if (h->got.refcount == 0)
3321 /* Make sure this symbol is output as a dynamic symbol. */
3322 if (h->dynindx == -1)
3324 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3329 /* Update the sum of reloc counts for this symbol. */
3336 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3338 /* Allocate space in the .got section. */
3339 sgot->size += got_element_size;
3340 /* Allocate relocation space. */
3341 srelgot->size += sizeof (Elf32_External_Rela);
3343 elf_cris_hash_entry (h)->reg_got_refcount++;
3347 case R_CRIS_16_GOT_GD:
3348 case R_CRIS_32_GOT_GD:
3349 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3351 /* Allocate space in the .got section. */
3352 sgot->size += got_element_size;
3353 /* Allocate relocation space. */
3354 srelgot->size += sizeof (Elf32_External_Rela);
3356 elf_cris_hash_entry (h)->dtp_refcount++;
3359 case R_CRIS_32_GOT_TPREL:
3360 case R_CRIS_16_GOT_TPREL:
3361 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3363 /* Allocate space in the .got section. */
3364 sgot->size += got_element_size;
3365 /* Allocate relocation space. */
3366 srelgot->size += sizeof (Elf32_External_Rela);
3368 elf_cris_hash_entry (h)->tprel_refcount++;
3378 /* This is a global offset table entry for a local symbol. */
3379 if (local_got_refcounts[r_symndx_lgot] == 0)
3381 sgot->size += got_element_size;
3384 /* If we are generating a shared object, we need
3385 to output a R_CRIS_RELATIVE reloc so that the
3386 dynamic linker can adjust this GOT entry.
3387 Similarly for non-regular got entries. */
3388 srelgot->size += sizeof (Elf32_External_Rela);
3391 /* Update the reloc-specific count. */
3392 local_got_refcounts[r_symndx_lgot]++;
3394 /* This one is the sum of all the others. */
3395 local_got_refcounts[r_symndx]++;
3399 case R_CRIS_16_DTPREL:
3400 case R_CRIS_32_DTPREL:
3401 case R_CRIS_32_GOTREL:
3402 /* This reference requires a global offset table.
3403 FIXME: The actual refcount isn't used currently; the .got
3404 section can't be removed if there were any references in the
3406 local_got_refcounts[-1]++;
3409 handle_gotplt_reloc:
3411 case R_CRIS_32_PLT_GOTREL:
3412 /* This reference requires a global offset table. */
3413 local_got_refcounts[-1]++;
3416 case R_CRIS_32_PLT_PCREL:
3417 /* This symbol requires a procedure linkage table entry. We
3418 actually build the entry in adjust_dynamic_symbol,
3419 because this might be a case of linking PIC code which is
3420 never referenced by a dynamic object, in which case we
3421 don't need to generate a procedure linkage table entry
3424 /* Beware: if we'd check for visibility of the symbol here
3425 (and not marking the need for a PLT when non-visible), we'd
3426 get into trouble with keeping handling consistent with
3427 regards to relocs found before definition and GOTPLT
3428 handling. Eliminable PLT entries will be dealt with later
3440 /* Let's help debug shared library creation. Any of these
3441 relocs *can* be used in shared libs, but pages containing
3442 them cannot be shared, so they're not appropriate for
3443 common use. Don't warn for sections we don't care about,
3444 such as debug sections or non-constant sections. We
3445 can't help tables of (global) function pointers, for
3446 example, though they must be emitted in a (writable) data
3447 section to avoid having impure text sections. */
3449 && (sec->flags & SEC_ALLOC) != 0
3450 && (sec->flags & SEC_READONLY) != 0)
3452 /* FIXME: How do we make this optionally a warning only? */
3453 (*_bfd_error_handler)
3454 (_("%B, section %A:\n relocation %s should not"
3455 " be used in a shared object; recompile with -fPIC"),
3458 cris_elf_howto_table[r_type].name);
3464 /* Make sure a plt entry is created for this symbol if it
3465 turns out to be a function defined by a dynamic object. */
3466 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3470 /* If we are creating a shared library and this is not a local
3471 symbol, we need to copy the reloc into the shared library.
3472 However when linking with -Bsymbolic and this is a global
3473 symbol which is defined in an object we are including in the
3474 link (i.e., DEF_REGULAR is set), then we can resolve the
3475 reloc directly. At this point we have not seen all the input
3476 files, so it is possible that DEF_REGULAR is not set now but
3477 will be set later (it is never cleared). In case of a weak
3478 definition, DEF_REGULAR may be cleared later by a strong
3479 definition in a shared library. We account for that
3480 possibility below by storing information in the relocs_copied
3481 field of the hash table entry. A similar situation occurs
3482 when creating shared libraries and symbol visibility changes
3483 render the symbol local. */
3485 /* No need to do anything if we're not creating a shared object. */
3489 /* We don't need to handle relocs into sections not going into
3490 the "real" output. */
3491 if ((sec->flags & SEC_ALLOC) == 0)
3494 /* We may need to create a reloc section in the dynobj and made room
3498 sreloc = _bfd_elf_make_dynamic_reloc_section
3499 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3505 if (sec->flags & SEC_READONLY)
3506 info->flags |= DF_TEXTREL;
3508 sreloc->size += sizeof (Elf32_External_Rela);
3511 case R_CRIS_8_PCREL:
3512 case R_CRIS_16_PCREL:
3513 case R_CRIS_32_PCREL:
3518 /* Make sure a plt entry is created for this symbol if it
3519 turns out to be a function defined by a dynamic object. */
3520 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3524 /* If we are creating a shared library and this is not a local
3525 symbol, we need to copy the reloc into the shared library.
3526 However when linking with -Bsymbolic and this is a global
3527 symbol which is defined in an object we are including in the
3528 link (i.e., DEF_REGULAR is set), then we can resolve the
3529 reloc directly. At this point we have not seen all the input
3530 files, so it is possible that DEF_REGULAR is not set now but
3531 will be set later (it is never cleared). In case of a weak
3532 definition, DEF_REGULAR may be cleared later by a strong
3533 definition in a shared library. We account for that
3534 possibility below by storing information in the relocs_copied
3535 field of the hash table entry. A similar situation occurs
3536 when creating shared libraries and symbol visibility changes
3537 render the symbol local. */
3539 /* No need to do anything if we're not creating a shared object. */
3543 /* We don't need to handle relocs into sections not going into
3544 the "real" output. */
3545 if ((sec->flags & SEC_ALLOC) == 0)
3548 /* If the symbol is local, then we know already we can
3549 eliminate the reloc. */
3550 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3553 /* If this is with -Bsymbolic and the symbol isn't weak, and
3554 is defined by an ordinary object (the ones we include in
3555 this shared library) then we can also eliminate the
3556 reloc. See comment above for more eliminable cases which
3557 we can't identify at this time. */
3559 && h->root.type != bfd_link_hash_defweak
3563 /* We may need to create a reloc section in the dynobj and made room
3567 sreloc = _bfd_elf_make_dynamic_reloc_section
3568 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3574 sreloc->size += sizeof (Elf32_External_Rela);
3576 /* We count the number of PC relative relocations we have
3577 entered for this symbol, so that we can discard them
3578 again if the symbol is later defined by a regular object.
3579 We know that h is really a pointer to an
3580 elf_cris_link_hash_entry. */
3582 struct elf_cris_link_hash_entry *eh;
3583 struct elf_cris_pcrel_relocs_copied *p;
3585 eh = elf_cris_hash_entry (h);
3587 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3588 if (p->section == sreloc)
3593 p = ((struct elf_cris_pcrel_relocs_copied *)
3594 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3597 p->next = eh->pcrel_relocs_copied;
3598 eh->pcrel_relocs_copied = p;
3599 p->section = sreloc;
3608 /* This relocation describes the C++ object vtable hierarchy.
3609 Reconstruct it for later use during GC. */
3610 case R_CRIS_GNU_VTINHERIT:
3611 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3615 /* This relocation describes which C++ vtable entries are actually
3616 used. Record for later use during GC. */
3617 case R_CRIS_GNU_VTENTRY:
3618 BFD_ASSERT (h != NULL);
3620 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3624 case R_CRIS_16_TPREL:
3625 case R_CRIS_32_TPREL:
3626 /* Already warned above, when necessary. */
3630 /* Other relocs do not appear here. */
3631 bfd_set_error (bfd_error_bad_value);
3639 /* Set the sizes of the dynamic sections. */
3642 elf_cris_size_dynamic_sections (output_bfd, info)
3643 bfd *output_bfd ATTRIBUTE_UNUSED;
3644 struct bfd_link_info *info;
3651 dynobj = elf_hash_table (info)->dynobj;
3652 BFD_ASSERT (dynobj != NULL);
3654 if (elf_hash_table (info)->dynamic_sections_created)
3656 /* Set the contents of the .interp section to the interpreter. */
3657 if (info->executable)
3659 s = bfd_get_section_by_name (dynobj, ".interp");
3660 BFD_ASSERT (s != NULL);
3661 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3662 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3667 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3668 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3669 elf_cris_adjust_gotplt_to_got,
3672 /* We may have created entries in the .rela.got section.
3673 However, if we are not creating the dynamic sections, we will
3674 not actually use these entries. Reset the size of .rela.got,
3675 which will cause it to get stripped from the output file
3677 s = bfd_get_section_by_name (dynobj, ".rela.got");
3682 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3683 relative relocs against symbols defined in a regular object. We
3684 allocated space for them in the check_relocs routine, but we will not
3685 fill them in in the relocate_section routine. We also discard space
3686 for relocs that have become for local symbols due to symbol
3687 visibility changes. For programs, we discard space for relocs for
3688 symbols not referenced by any dynamic object. */
3690 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3691 elf_cris_discard_excess_dso_dynamics,
3694 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3695 elf_cris_discard_excess_program_dynamics,
3698 /* The check_relocs and adjust_dynamic_symbol entry points have
3699 determined the sizes of the various dynamic sections. Allocate
3703 for (s = dynobj->sections; s != NULL; s = s->next)
3707 if ((s->flags & SEC_LINKER_CREATED) == 0)
3710 /* It's OK to base decisions on the section name, because none
3711 of the dynobj section names depend upon the input files. */
3712 name = bfd_get_section_name (dynobj, s);
3714 if (strcmp (name, ".plt") == 0)
3716 /* Remember whether there is a PLT. */
3719 else if (strcmp (name, ".got.plt") == 0)
3721 /* The .got.plt contains the .got header as well as the
3722 actual .got.plt contents. The .got header may contain a
3723 R_CRIS_DTPMOD entry at index 3. */
3724 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3727 else if (CONST_STRNEQ (name, ".rela"))
3729 if (strcmp (name, ".rela.got") == 0
3730 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3732 s->size += sizeof (Elf32_External_Rela);
3736 /* Remember whether there are any reloc sections other
3738 if (strcmp (name, ".rela.plt") != 0)
3741 /* We use the reloc_count field as a counter if we need
3742 to copy relocs into the output file. */
3746 else if (! CONST_STRNEQ (name, ".got")
3747 && strcmp (name, ".dynbss") != 0)
3749 /* It's not one of our sections, so don't allocate space. */
3755 /* If we don't need this section, strip it from the
3756 output file. This is mostly to handle .rela.bss and
3757 .rela.plt. We must create both sections in
3758 create_dynamic_sections, because they must be created
3759 before the linker maps input sections to output
3760 sections. The linker does that before
3761 adjust_dynamic_symbol is called, and it is that
3762 function which decides whether anything needs to go
3763 into these sections. */
3764 s->flags |= SEC_EXCLUDE;
3768 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3771 /* Allocate memory for the section contents. We use bfd_zalloc here
3772 in case unused entries are not reclaimed before the section's
3773 contents are written out. This should not happen, but this way
3774 if it does, we will not write out garbage. For reloc sections,
3775 this will make entries have the type R_CRIS_NONE. */
3776 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3777 if (s->contents == NULL)
3781 if (elf_hash_table (info)->dynamic_sections_created)
3783 /* Add some entries to the .dynamic section. We fill in the
3784 values later, in elf_cris_finish_dynamic_sections, but we
3785 must add the entries now so that we get the correct size for
3786 the .dynamic section. The DT_DEBUG entry is filled in by the
3787 dynamic linker and used by the debugger. */
3788 #define add_dynamic_entry(TAG, VAL) \
3789 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3793 if (!add_dynamic_entry (DT_DEBUG, 0))
3799 if (!add_dynamic_entry (DT_PLTGOT, 0)
3800 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3801 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3802 || !add_dynamic_entry (DT_JMPREL, 0))
3808 if (!add_dynamic_entry (DT_RELA, 0)
3809 || !add_dynamic_entry (DT_RELASZ, 0)
3810 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3814 if ((info->flags & DF_TEXTREL) != 0)
3816 if (!add_dynamic_entry (DT_TEXTREL, 0))
3818 info->flags |= DF_TEXTREL;
3821 #undef add_dynamic_entry
3826 /* This function is called via elf_cris_link_hash_traverse if we are
3827 creating a shared object. In the -Bsymbolic case, it discards the
3828 space allocated to copy PC relative relocs against symbols which
3829 are defined in regular objects. For the normal non-symbolic case,
3830 we also discard space for relocs that have become local due to
3831 symbol visibility changes. We allocated space for them in the
3832 check_relocs routine, but we won't fill them in in the
3833 relocate_section routine. */
3836 elf_cris_discard_excess_dso_dynamics (h, inf)
3837 struct elf_cris_link_hash_entry *h;
3840 struct elf_cris_pcrel_relocs_copied *s;
3841 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3843 if (h->root.root.type == bfd_link_hash_warning)
3844 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3846 /* If a symbol has been forced local or we have found a regular
3847 definition for the symbolic link case, then we won't be needing
3849 if (h->root.def_regular
3850 && (h->root.forced_local
3853 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3854 s->section->size -= s->count * sizeof (Elf32_External_Rela);
3859 /* If we have accounted for PC-relative relocs for read-only
3860 sections, now is the time to warn for them. We can't do it in
3861 cris_elf_check_relocs, because we don't know the status of all
3862 symbols at that time (and it's common to force symbols local
3865 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3867 BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0);
3869 /* FIXME: How do we make this optionally a warning only? */
3870 (*_bfd_error_handler)
3871 (_("%B, section `%A', to symbol `%s':\n"
3872 " relocation %s should not be used"
3873 " in a shared object; recompile with -fPIC"),
3876 h->root.root.root.string,
3877 cris_elf_howto_table[s->r_type].name);
3879 info->flags |= DF_TEXTREL;
3885 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3886 creating a shared object. We discard space for relocs for symbols put
3887 in the .got, but which we found we do not have to resolve at run-time. */
3890 elf_cris_discard_excess_program_dynamics (h, inf)
3891 struct elf_cris_link_hash_entry *h;
3894 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3896 if (h->root.root.type == bfd_link_hash_warning)
3897 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3899 /* If we're not creating a shared library and have a symbol which is
3900 referred to by .got references, but the symbol is defined locally,
3901 (or rather, not defined by a DSO) then lose the reloc for the .got
3902 (don't allocate room for it). Likewise for relocs for something
3903 for which we create a PLT. */
3904 if (!h->root.def_dynamic
3905 || h->root.plt.refcount > 0)
3907 if (h->reg_got_refcount > 0
3908 /* The size of this section is only valid and in sync with the
3909 various reference counts if we do dynamic; don't decrement it
3911 && elf_hash_table (info)->dynamic_sections_created)
3913 bfd *dynobj = elf_hash_table (info)->dynobj;
3916 BFD_ASSERT (dynobj != NULL);
3918 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3920 BFD_ASSERT (srelgot != NULL);
3922 srelgot->size -= sizeof (Elf32_External_Rela);
3925 /* If the locally-defined symbol isn't used by a DSO, then we don't
3926 have to export it as a dynamic symbol. This was already done for
3927 functions; doing this for all symbols would presumably not
3928 introduce new problems. Of course we don't do this if we're
3929 exporting all dynamic symbols. */
3930 if (! info->export_dynamic
3931 && h->root.dynindx != -1
3932 && !h->root.def_dynamic
3933 && !h->root.ref_dynamic)
3935 h->root.dynindx = -1;
3936 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3937 h->root.dynstr_index);
3944 /* Reject a file depending on presence and expectation of prefixed
3945 underscores on symbols. */
3948 cris_elf_object_p (abfd)
3951 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3954 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3955 return (bfd_get_symbol_leading_char (abfd) == '_');
3957 return (bfd_get_symbol_leading_char (abfd) == 0);
3960 /* Mark presence or absence of leading underscore. Set machine type
3961 flags from mach type. */
3964 cris_elf_final_write_processing (abfd, linker)
3966 bfd_boolean linker ATTRIBUTE_UNUSED;
3968 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3970 e_flags &= ~EF_CRIS_UNDERSCORE;
3971 if (bfd_get_symbol_leading_char (abfd) == '_')
3972 e_flags |= EF_CRIS_UNDERSCORE;
3974 switch (bfd_get_mach (abfd))
3976 case bfd_mach_cris_v0_v10:
3977 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3980 case bfd_mach_cris_v10_v32:
3981 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3984 case bfd_mach_cris_v32:
3985 e_flags |= EF_CRIS_VARIANT_V32;
3989 _bfd_abort (__FILE__, __LINE__,
3990 _("Unexpected machine number"));
3993 elf_elfheader (abfd)->e_flags = e_flags;
3996 /* Set the mach type from e_flags value. */
3999 cris_elf_set_mach_from_flags (abfd, flags)
4001 unsigned long flags;
4003 switch (flags & EF_CRIS_VARIANT_MASK)
4005 case EF_CRIS_VARIANT_ANY_V0_V10:
4006 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4009 case EF_CRIS_VARIANT_V32:
4010 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4013 case EF_CRIS_VARIANT_COMMON_V10_V32:
4014 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4018 /* Since we don't recognize them, we obviously can't support them
4019 with this code; we'd have to require that all future handling
4020 would be optional. */
4021 bfd_set_error (bfd_error_wrong_format);
4028 /* Display the flags field. */
4031 cris_elf_print_private_bfd_data (abfd, ptr)
4035 FILE *file = (FILE *) ptr;
4037 BFD_ASSERT (abfd != NULL && ptr != NULL);
4039 _bfd_elf_print_private_bfd_data (abfd, ptr);
4041 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4043 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4044 fprintf (file, _(" [symbols have a _ prefix]"));
4045 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4046 == EF_CRIS_VARIANT_COMMON_V10_V32)
4047 fprintf (file, _(" [v10 and v32]"));
4048 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4049 == EF_CRIS_VARIANT_V32)
4050 fprintf (file, _(" [v32]"));
4056 /* Don't mix files with and without a leading underscore. */
4059 cris_elf_merge_private_bfd_data (ibfd, obfd)
4065 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4068 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4069 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4072 imach = bfd_get_mach (ibfd);
4074 if (! elf_flags_init (obfd))
4076 /* This happens when ld starts out with a 'blank' output file. */
4077 elf_flags_init (obfd) = TRUE;
4079 /* We ignore the linker-set mach, and instead set it according to
4080 the first input file. This would also happen if we could
4081 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4082 This allows us to keep the same linker config across
4083 cris(v0..v10) and crisv32. The drawback is that we can't force
4084 the output type, which might be a sane thing to do for a
4085 v10+v32 compatibility object. */
4086 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4090 if (bfd_get_symbol_leading_char (ibfd)
4091 != bfd_get_symbol_leading_char (obfd))
4093 (*_bfd_error_handler)
4094 (bfd_get_symbol_leading_char (ibfd) == '_'
4095 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4096 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4098 bfd_set_error (bfd_error_bad_value);
4102 omach = bfd_get_mach (obfd);
4106 /* We can get an incompatible combination only if either is
4107 bfd_mach_cris_v32, and the other one isn't compatible. */
4108 if ((imach == bfd_mach_cris_v32
4109 && omach != bfd_mach_cris_v10_v32)
4110 || (omach == bfd_mach_cris_v32
4111 && imach != bfd_mach_cris_v10_v32))
4113 (*_bfd_error_handler)
4114 ((imach == bfd_mach_cris_v32)
4115 ? _("%B contains CRIS v32 code, incompatible"
4116 " with previous objects")
4117 : _("%B contains non-CRIS-v32 code, incompatible"
4118 " with previous objects"),
4120 bfd_set_error (bfd_error_bad_value);
4124 /* We don't have to check the case where the input is compatible
4125 with v10 and v32, because the output is already known to be set
4126 to the other (compatible) mach. */
4127 if (omach == bfd_mach_cris_v10_v32
4128 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4135 /* Do side-effects of e_flags copying to obfd. */
4138 cris_elf_copy_private_bfd_data (ibfd, obfd)
4142 /* Call the base function. */
4143 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4146 /* If output is big-endian for some obscure reason, stop here. */
4147 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4150 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4151 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4154 /* Do what we really came here for. */
4155 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4158 static enum elf_reloc_type_class
4159 elf_cris_reloc_type_class (rela)
4160 const Elf_Internal_Rela *rela;
4162 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4165 case R_CRIS_RELATIVE:
4166 return reloc_class_relative;
4167 case R_CRIS_JUMP_SLOT:
4168 return reloc_class_plt;
4170 return reloc_class_copy;
4172 return reloc_class_normal;
4176 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4177 two GOT entries from three types with two different sizes. We handle
4178 it as a single entry, so we can use the regular offset-calculation
4182 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4183 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4184 struct elf_link_hash_entry *hr,
4186 unsigned long symndx)
4188 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4191 /* We may have one regular GOT entry or up to two TLS GOT
4195 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4196 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4198 BFD_ASSERT (local_got_refcounts != NULL);
4200 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4202 /* We can't have a variable referred to both as a regular
4203 variable and through TLS relocs. */
4204 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4205 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4209 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4212 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4217 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4218 if (hh->reg_got_refcount > 0)
4220 /* The actual error-on-input is emitted elsewhere. */
4221 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4225 if (hh->dtp_refcount > 0)
4228 if (hh->tprel_refcount > 0)
4232 /* We're only called when h->got.refcount is non-zero, so we must
4233 have a non-zero size. */
4234 BFD_ASSERT (eltsiz != 0);
4238 #define ELF_ARCH bfd_arch_cris
4239 #define ELF_MACHINE_CODE EM_CRIS
4240 #define ELF_MAXPAGESIZE 0x2000
4242 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4243 #define TARGET_LITTLE_NAME "elf32-cris"
4244 #define elf_symbol_leading_char 0
4246 #define elf_info_to_howto_rel NULL
4247 #define elf_info_to_howto cris_info_to_howto_rela
4248 #define elf_backend_relocate_section cris_elf_relocate_section
4249 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4250 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4251 #define elf_backend_check_relocs cris_elf_check_relocs
4252 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4253 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4255 #define elf_backend_can_gc_sections 1
4256 #define elf_backend_can_refcount 1
4258 #define elf_backend_object_p cris_elf_object_p
4259 #define elf_backend_final_write_processing \
4260 cris_elf_final_write_processing
4261 #define bfd_elf32_bfd_print_private_bfd_data \
4262 cris_elf_print_private_bfd_data
4263 #define bfd_elf32_bfd_merge_private_bfd_data \
4264 cris_elf_merge_private_bfd_data
4265 #define bfd_elf32_bfd_copy_private_bfd_data \
4266 cris_elf_copy_private_bfd_data
4268 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4269 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4271 #define bfd_elf32_bfd_link_hash_table_create \
4272 elf_cris_link_hash_table_create
4273 #define elf_backend_adjust_dynamic_symbol \
4274 elf_cris_adjust_dynamic_symbol
4275 #define elf_backend_copy_indirect_symbol \
4276 elf_cris_copy_indirect_symbol
4277 #define elf_backend_size_dynamic_sections \
4278 elf_cris_size_dynamic_sections
4279 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4280 #define elf_backend_finish_dynamic_symbol \
4281 elf_cris_finish_dynamic_symbol
4282 #define elf_backend_finish_dynamic_sections \
4283 elf_cris_finish_dynamic_sections
4284 #define elf_backend_create_dynamic_sections \
4285 _bfd_elf_create_dynamic_sections
4286 #define bfd_elf32_bfd_final_link \
4287 bfd_elf_gc_common_final_link
4288 #define elf_backend_hide_symbol elf_cris_hide_symbol
4289 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4291 #define elf_backend_want_got_plt 1
4292 #define elf_backend_plt_readonly 1
4293 #define elf_backend_want_plt_sym 0
4294 #define elf_backend_got_header_size 12
4295 #define elf_backend_got_elt_size elf_cris_got_elt_size
4297 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4298 linking and libraries (if it's a win of any significance). Until then,
4299 take the easy route. */
4300 #define elf_backend_may_use_rel_p 0
4301 #define elf_backend_may_use_rela_p 1
4302 #define elf_backend_rela_normal 1
4304 #include "elf32-target.h"
4306 #undef TARGET_LITTLE_SYM
4307 #undef TARGET_LITTLE_NAME
4308 #undef elf_symbol_leading_char
4310 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4311 #define TARGET_LITTLE_NAME "elf32-us-cris"
4312 #define elf_symbol_leading_char '_'
4314 #define elf32_bed elf32_us_cris_bed
4316 #include "elf32-target.h"