1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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;
797 /* A section in dynobj. */
799 /* Number of relocs copied in this section. */
803 /* CRIS ELF linker hash entry. */
805 struct elf_cris_link_hash_entry
807 struct elf_link_hash_entry root;
809 /* Number of PC relative relocs copied for this symbol. */
810 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
812 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
813 both a general GOT and a PLT-specific GOT entry for the same symbol,
814 when it is referenced both as a function and as a function pointer.
816 Number of GOTPLT references for a function. */
817 bfd_signed_vma gotplt_refcount;
819 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
820 (zero is never used as an index). FIXME: We should be able to fold
821 this with gotplt_refcount in a union, like the got and plt unions in
822 elf_link_hash_entry. */
823 bfd_size_type gotplt_offset;
825 /* The root.got.refcount is the sum of the regular reference counts
826 (this) and those members below. We have to keep a separate count
827 to track when we've found the first (or last) reference to a
828 regular got entry. The offset is in root.got.offset. */
829 bfd_signed_vma reg_got_refcount;
831 /* Similar to the above, the number of reloc references to this
832 symbols that need a R_CRIS_32_TPREL slot. The offset is in
833 root.got.offset, because this and .dtp_refcount can't validly
834 happen when there's also a regular GOT entry; that's invalid
835 input for which an error is emitted. */
836 bfd_signed_vma tprel_refcount;
838 /* Similar to the above, the number of reloc references to this
839 symbols that need a R_CRIS_DTP slot. The offset is in
840 root.got.offset; plus 4 if .tprel_refcount > 0. */
841 bfd_signed_vma dtp_refcount;
844 /* The local_got_refcounts and local_got_offsets are a multiple of
845 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
846 refcount for GOT itself, see code), with the summary / group offset
847 for local symbols located at offset N, reference counts for
848 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
849 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
852 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
853 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
854 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
855 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
857 /* CRIS ELF linker hash table. */
859 struct elf_cris_link_hash_table
861 struct elf_link_hash_table root;
863 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
864 since we try and avoid creating GOTPLT:s when there's already a GOT.
865 Instead, we keep and update the next available index here. */
866 bfd_size_type next_gotplt_entry;
868 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
869 been seen for any input; if != 0, then the constant-offset
870 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
871 negative at relocation, so that we don't need an extra flag for
872 when the reloc is output. */
873 bfd_signed_vma dtpmod_refcount;
876 /* Traverse a CRIS ELF linker hash table. */
878 #define elf_cris_link_hash_traverse(table, func, info) \
879 (elf_link_hash_traverse \
881 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
884 /* Get the CRIS ELF linker hash table from a link_info structure. */
886 #define elf_cris_hash_table(p) \
887 ((struct elf_cris_link_hash_table *) (p)->hash)
889 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
890 "parent class"). The .root reference is just a simple type
891 check on the argument. */
893 #define elf_cris_hash_entry(p) \
894 ((struct elf_cris_link_hash_entry *) (&(p)->root))
896 /* Create an entry in a CRIS ELF linker hash table. */
898 static struct bfd_hash_entry *
899 elf_cris_link_hash_newfunc (entry, table, string)
900 struct bfd_hash_entry *entry;
901 struct bfd_hash_table *table;
904 struct elf_cris_link_hash_entry *ret =
905 (struct elf_cris_link_hash_entry *) entry;
907 /* Allocate the structure if it has not already been allocated by a
909 if (ret == (struct elf_cris_link_hash_entry *) NULL)
910 ret = ((struct elf_cris_link_hash_entry *)
911 bfd_hash_allocate (table,
912 sizeof (struct elf_cris_link_hash_entry)));
913 if (ret == (struct elf_cris_link_hash_entry *) NULL)
914 return (struct bfd_hash_entry *) ret;
916 /* Call the allocation method of the superclass. */
917 ret = ((struct elf_cris_link_hash_entry *)
918 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
920 if (ret != (struct elf_cris_link_hash_entry *) NULL)
922 ret->pcrel_relocs_copied = NULL;
923 ret->gotplt_refcount = 0;
924 ret->gotplt_offset = 0;
925 ret->dtp_refcount = 0;
926 ret->tprel_refcount = 0;
927 ret->reg_got_refcount = 0;
930 return (struct bfd_hash_entry *) ret;
933 /* Create a CRIS ELF linker hash table. */
935 static struct bfd_link_hash_table *
936 elf_cris_link_hash_table_create (abfd)
939 struct elf_cris_link_hash_table *ret;
940 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
942 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
943 if (ret == (struct elf_cris_link_hash_table *) NULL)
946 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
947 elf_cris_link_hash_newfunc,
948 sizeof (struct elf_cris_link_hash_entry)))
954 /* Initialize to skip over the first three entries in the gotplt; they
955 are used for run-time symbol evaluation. */
956 ret->next_gotplt_entry = 12;
958 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
959 ret->dtpmod_refcount = 0;
961 return &ret->root.root;
964 /* Perform a single relocation. By default we use the standard BFD
965 routines, with a few tweaks. */
967 static bfd_reloc_status_type
968 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
970 reloc_howto_type * howto;
972 asection * input_section;
974 Elf_Internal_Rela * rel;
977 bfd_reloc_status_type r;
978 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
980 /* PC-relative relocations are relative to the position *after*
981 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
982 not a single byte, since PC must be 16-bit-aligned. */
985 /* Check that the 16-bit GOT relocs are positive. */
986 case R_CRIS_16_GOTPLT:
988 if ((bfd_signed_vma) relocation < 0)
989 return bfd_reloc_overflow;
992 case R_CRIS_32_PLT_PCREL:
993 case R_CRIS_32_PCREL:
997 case R_CRIS_16_PCREL:
1005 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1006 contents, rel->r_offset,
1007 relocation, rel->r_addend);
1012 /* The number of errors left before we stop outputting reloc-specific
1013 explanatory messages. By coincidence, this works nicely together
1014 with the default number of messages you'll get from LD about
1015 "relocation truncated to fit" messages before you get an
1016 "additional relocation overflows omitted from the output". */
1017 static int additional_relocation_error_msg_count = 10;
1019 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1020 copied, for further comments. */
1023 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1024 contents, relocs, local_syms, local_sections)
1025 bfd *output_bfd ATTRIBUTE_UNUSED;
1026 struct bfd_link_info *info;
1028 asection *input_section;
1030 Elf_Internal_Rela *relocs;
1031 Elf_Internal_Sym *local_syms;
1032 asection **local_sections;
1035 Elf_Internal_Shdr *symtab_hdr;
1036 struct elf_link_hash_entry **sym_hashes;
1037 bfd_vma *local_got_offsets;
1041 Elf_Internal_Rela *rel;
1042 Elf_Internal_Rela *relend;
1045 dynobj = elf_hash_table (info)->dynobj;
1046 local_got_offsets = elf_local_got_offsets (input_bfd);
1047 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1048 sym_hashes = elf_sym_hashes (input_bfd);
1049 relend = relocs + input_section->reloc_count;
1058 splt = bfd_get_section_by_name (dynobj, ".plt");
1059 sgot = bfd_get_section_by_name (dynobj, ".got");
1062 for (rel = relocs; rel < relend; rel ++)
1064 reloc_howto_type *howto;
1065 unsigned long r_symndx;
1066 Elf_Internal_Sym *sym;
1068 struct elf_link_hash_entry *h;
1070 bfd_reloc_status_type r;
1071 const char *symname = NULL;
1072 enum elf_cris_reloc_type r_type;
1074 r_type = ELF32_R_TYPE (rel->r_info);
1076 if ( r_type == R_CRIS_GNU_VTINHERIT
1077 || r_type == R_CRIS_GNU_VTENTRY)
1080 r_symndx = ELF32_R_SYM (rel->r_info);
1081 howto = cris_elf_howto_table + r_type;
1086 if (r_symndx < symtab_hdr->sh_info)
1088 sym = local_syms + r_symndx;
1089 sec = local_sections [r_symndx];
1090 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1092 symname = (bfd_elf_string_from_elf_section
1093 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1094 if (symname == NULL)
1095 symname = bfd_section_name (input_bfd, sec);
1100 bfd_boolean unresolved_reloc;
1102 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1103 r_symndx, symtab_hdr, sym_hashes,
1105 unresolved_reloc, warned);
1107 symname = h->root.root.string;
1109 if (unresolved_reloc
1110 /* Perhaps we should detect the cases that
1111 sec->output_section is expected to be NULL like i386 and
1112 m68k, but apparently (and according to elfxx-ia64.c) all
1113 valid cases are where the symbol is defined in a shared
1114 object which we link dynamically against. This includes
1115 PLT relocs for which we've created a PLT entry and other
1116 relocs for which we're prepared to create dynamic
1119 For now, new situations cause us to just err when
1120 sec->output_offset is NULL but the object with the symbol
1121 is *not* dynamically linked against. Thus this will
1122 automatically remind us so we can see if there are other
1123 valid cases we need to revisit. */
1124 && (sec->owner->flags & DYNAMIC) != 0)
1127 else if (h->root.type == bfd_link_hash_defined
1128 || h->root.type == bfd_link_hash_defweak)
1130 /* Here follow the cases where the relocation value must
1131 be zero (or when further handling is simplified when
1132 zero). I can't claim to understand the various
1133 conditions and they weren't described in the files
1134 where I copied them from (elf32-m68k.c and
1135 elf32-i386.c), but let's mention examples of where
1136 they happen. FIXME: Perhaps define and use a
1137 dynamic_symbol_p function like ia64.
1139 - When creating a shared library, we can have an
1140 ordinary relocation for a symbol defined in a shared
1141 library (perhaps the one we create). We then make
1142 the relocation value zero, as the value seen now will
1143 be added into the relocation addend in this shared
1144 library, but must be handled only at dynamic-link
1145 time. FIXME: Not sure this example covers the
1146 h->elf_link_hash_flags test, though it's there in
1149 && ((! info->symbolic && h->dynindx != -1)
1151 && (input_section->flags & SEC_ALLOC) != 0
1152 && (r_type == R_CRIS_8
1153 || r_type == R_CRIS_16
1154 || r_type == R_CRIS_32
1155 || r_type == R_CRIS_8_PCREL
1156 || r_type == R_CRIS_16_PCREL
1157 || r_type == R_CRIS_32_PCREL))
1159 else if (!info->relocatable && unresolved_reloc)
1162 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1165 cris_elf_howto_table[r_type].name,
1167 bfd_set_error (bfd_error_bad_value);
1173 if (sec != NULL && elf_discarded_section (sec))
1175 /* For relocs against symbols from removed linkonce sections,
1176 or sections discarded by a linker script, we just want the
1177 section contents zeroed. Avoid any special processing. */
1178 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1184 if (info->relocatable)
1189 case R_CRIS_16_GOTPLT:
1190 case R_CRIS_32_GOTPLT:
1191 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1192 but we require a PLT, and the PLT handling will take care of
1193 filling in the PLT-specific GOT entry. For the GOT offset,
1194 calculate it as we do when filling it in for the .got.plt
1195 section. If we don't have a PLT, punt to GOT handling. */
1197 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1200 = bfd_get_section_by_name (dynobj, ".got.plt");
1203 BFD_ASSERT (h->dynindx != -1);
1204 BFD_ASSERT (sgotplt != NULL);
1207 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1209 relocation = got_offset;
1213 /* We didn't make a PLT entry for this symbol. Maybe everything is
1214 folded into the GOT. Other than folding, this happens when
1215 statically linking PIC code, or when using -Bsymbolic. Check
1216 that we instead have a GOT entry as done for us by
1217 elf_cris_adjust_dynamic_symbol, and drop through into the
1218 ordinary GOT cases. This must not happen for the
1219 executable, because any reference it does to a function
1220 that is satisfied by a DSO must generate a PLT. We assume
1221 these call-specific relocs don't address non-functions. */
1223 && (h->got.offset == (bfd_vma) -1
1227 && h->root.type == bfd_link_hash_undefweak)))))
1229 (*_bfd_error_handler)
1230 ((h->got.offset == (bfd_vma) -1)
1231 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1232 " against symbol `%s'")
1233 : _("%B, section %A: No PLT for relocation %s"
1234 " against symbol `%s'"),
1237 cris_elf_howto_table[r_type].name,
1238 (symname != NULL && symname[0] != '\0'
1239 ? symname : _("[whose name is lost]")));
1241 /* FIXME: Perhaps blaming input is not the right thing to
1242 do; this is probably an internal error. But it is true
1243 that we didn't like that particular input. */
1244 bfd_set_error (bfd_error_bad_value);
1249 /* The size of the actual relocation is not used here; we only
1250 fill in the GOT table here. */
1256 /* Note that despite using RELA relocations, the .got contents
1257 is always filled in with the link-relative relocation
1258 value; the addend. */
1262 off = h->got.offset;
1263 BFD_ASSERT (off != (bfd_vma) -1);
1265 if (!elf_hash_table (info)->dynamic_sections_created
1268 || h->type == STT_FUNC
1271 && (info->symbolic || h->dynindx == -1)
1274 /* This wasn't checked above for ! info->shared, but
1275 must hold there if we get here; the symbol must
1276 be defined in the regular program or be undefweak
1277 or be a function or otherwise need a PLT. */
1278 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1281 || h->type == STT_FUNC
1283 || h->root.type == bfd_link_hash_undefweak);
1285 /* This is actually a static link, or it is a
1286 -Bsymbolic link and the symbol is defined locally,
1287 or is undefweak, or the symbol was forced to be
1288 local because of a version file, or we're not
1289 creating a dynamic object. We must initialize this
1290 entry in the global offset table. Since the offset
1291 must always be a multiple of 4, we use the least
1292 significant bit to record whether we have
1293 initialized it already.
1295 If this GOT entry should be runtime-initialized, we
1296 will create a .rela.got relocation entry to
1297 initialize the value. This is done in the
1298 finish_dynamic_symbol routine. */
1303 bfd_put_32 (output_bfd, relocation,
1304 sgot->contents + off);
1311 BFD_ASSERT (local_got_offsets != NULL
1312 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1314 off = local_got_offsets[r_symndx];
1316 /* The offset must always be a multiple of 4. We use
1317 the least significant bit to record whether we have
1318 already generated the necessary reloc. */
1323 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1327 Elf_Internal_Rela outrel;
1330 if (srelgot == NULL)
1332 = bfd_get_section_by_name (dynobj, ".rela.got");
1333 BFD_ASSERT (srelgot != NULL);
1335 outrel.r_offset = (sgot->output_section->vma
1336 + sgot->output_offset
1338 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1339 outrel.r_addend = relocation;
1340 loc = srelgot->contents;
1341 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1342 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1345 local_got_offsets[r_symndx] |= 1;
1349 relocation = sgot->output_offset + off;
1350 if (rel->r_addend != 0)
1352 /* We can't do anything for a relocation which is against
1353 a symbol *plus offset*. GOT holds relocations for
1354 symbols. Make this an error; the compiler isn't
1355 allowed to pass us these kinds of things. */
1357 (*_bfd_error_handler)
1358 (_("%B, section %A: relocation %s with non-zero addend %d"
1359 " against local symbol"),
1362 cris_elf_howto_table[r_type].name,
1365 (*_bfd_error_handler)
1366 (_("%B, section %A: relocation %s with non-zero addend %d"
1367 " against symbol `%s'"),
1370 cris_elf_howto_table[r_type].name,
1372 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1374 bfd_set_error (bfd_error_bad_value);
1380 case R_CRIS_32_GOTREL:
1381 /* This relocation must only be performed against local symbols.
1382 It's also ok when we link a program and the symbol is either
1383 defined in an ordinary (non-DSO) object or is undefined weak. */
1385 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1389 && h->root.type == bfd_link_hash_undefweak))))
1391 (*_bfd_error_handler)
1392 (_("%B, section %A: relocation %s is"
1393 " not allowed for global symbol: `%s'"),
1396 cris_elf_howto_table[r_type].name,
1398 bfd_set_error (bfd_error_bad_value);
1402 /* This can happen if we get a link error with the input ELF
1403 variant mismatching the output variant. Emit an error so
1404 it's noticed if it happens elsewhere. */
1407 (*_bfd_error_handler)
1408 (_("%B, section %A: relocation %s with no GOT created"),
1411 cris_elf_howto_table[r_type].name);
1412 bfd_set_error (bfd_error_bad_value);
1416 /* This relocation is like a PC-relative one, except the
1417 reference point is the location of GOT. Note that
1418 sgot->output_offset is not involved in this calculation. We
1419 always want the start of entire .got section, not the
1420 position after the reserved header. */
1421 relocation -= sgot->output_section->vma;
1424 case R_CRIS_32_PLT_PCREL:
1425 /* Relocation is to the entry for this symbol in the
1426 procedure linkage table. */
1428 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1429 without using the procedure linkage table. */
1430 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1433 if (h->plt.offset == (bfd_vma) -1
1436 /* We didn't make a PLT entry for this symbol. This
1437 happens when statically linking PIC code, or when
1438 using -Bsymbolic. */
1442 relocation = (splt->output_section->vma
1443 + splt->output_offset
1447 case R_CRIS_32_PLT_GOTREL:
1448 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1449 start of the .got section. See also comment at
1451 relocation -= sgot->output_section->vma;
1453 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1454 without using the procedure linkage table. */
1455 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1458 if (h->plt.offset == (bfd_vma) -1
1461 /* We didn't make a PLT entry for this symbol. This
1462 happens when statically linking PIC code, or when
1463 using -Bsymbolic. */
1467 relocation = (splt->output_section->vma
1468 + splt->output_offset
1470 - sgot->output_section->vma);
1473 case R_CRIS_8_PCREL:
1474 case R_CRIS_16_PCREL:
1475 case R_CRIS_32_PCREL:
1476 /* If the symbol was local, we need no shlib-specific handling. */
1477 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1486 && (input_section->flags & SEC_ALLOC) != 0
1487 && ((r_type != R_CRIS_8_PCREL
1488 && r_type != R_CRIS_16_PCREL
1489 && r_type != R_CRIS_32_PCREL)
1491 || !h->def_regular)))
1493 Elf_Internal_Rela outrel;
1495 bfd_boolean skip, relocate;
1497 /* When generating a shared object, these relocations
1498 are copied into the output file to be resolved at run
1505 name = (bfd_elf_string_from_elf_section
1507 elf_elfheader (input_bfd)->e_shstrndx,
1508 elf_section_data (input_section)->rel_hdr.sh_name));
1512 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
1513 && strcmp (bfd_get_section_name (input_bfd,
1517 sreloc = bfd_get_section_by_name (dynobj, name);
1519 /* That section should have been created in
1520 cris_elf_check_relocs, but that function will not be
1521 called for objects which fail in
1522 cris_elf_merge_private_bfd_data. */
1525 (*_bfd_error_handler)
1526 (_("%B: Internal inconsistency; no relocation section %s"),
1530 bfd_set_error (bfd_error_bad_value);
1539 _bfd_elf_section_offset (output_bfd, info, input_section,
1541 if (outrel.r_offset == (bfd_vma) -1)
1543 else if (outrel.r_offset == (bfd_vma) -2)
1544 skip = TRUE, relocate = TRUE;
1545 outrel.r_offset += (input_section->output_section->vma
1546 + input_section->output_offset);
1549 memset (&outrel, 0, sizeof outrel);
1550 /* h->dynindx may be -1 if the symbol was marked to
1553 && ((! info->symbolic && h->dynindx != -1)
1554 || !h->def_regular))
1556 BFD_ASSERT (h->dynindx != -1);
1557 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1558 outrel.r_addend = relocation + rel->r_addend;
1562 outrel.r_addend = relocation + rel->r_addend;
1564 if (r_type == R_CRIS_32)
1567 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1573 if (bfd_is_abs_section (sec))
1575 else if (sec == NULL || sec->owner == NULL)
1577 bfd_set_error (bfd_error_bad_value);
1584 /* We are turning this relocation into one
1585 against a section symbol. It would be
1586 proper to subtract the symbol's value,
1587 osec->vma, from the emitted reloc addend,
1588 but ld.so expects buggy relocs. */
1589 osec = sec->output_section;
1590 indx = elf_section_data (osec)->dynindx;
1593 struct elf_cris_link_hash_table *htab;
1594 htab = elf_cris_hash_table (info);
1595 osec = htab->root.text_index_section;
1596 indx = elf_section_data (osec)->dynindx;
1598 BFD_ASSERT (indx != 0);
1601 outrel.r_info = ELF32_R_INFO (indx, r_type);
1605 loc = sreloc->contents;
1606 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1607 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1609 /* This reloc will be computed at runtime, so there's no
1610 need to do anything now, except for R_CRIS_32 relocations
1611 that have been turned into R_CRIS_RELATIVE. */
1618 case R_CRIS_16_DTPREL:
1619 case R_CRIS_32_DTPREL:
1620 /* This relocation must only be performed against local
1621 symbols. It's also ok when we link a program and the
1622 symbol is defined in an ordinary (non-DSO) object (if
1623 it's undefined there, we've already seen an error). */
1625 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1628 && h->root.type != bfd_link_hash_undefined)))
1630 (*_bfd_error_handler)
1631 ((h->root.type == bfd_link_hash_undefined)
1632 /* We shouldn't get here for GCC-emitted code. */
1633 ? _("%B, section %A: relocation %s has an undefined"
1634 " reference to `%s', perhaps a declaration mixup?")
1635 : ("%B, section %A: relocation %s is"
1636 " not allowed for `%s', a global symbol with default"
1637 " visibility, perhaps a declaration mixup?"),
1640 cris_elf_howto_table[r_type].name,
1641 symname != NULL && symname[0] != '\0'
1642 ? symname : _("[whose name is lost]"));
1643 bfd_set_error (bfd_error_bad_value);
1647 BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0);
1649 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1650 already done so. Note that we do this in .got.plt, not
1651 in .got, as .got.plt contains the first part, still the
1652 reloc is against .got, because the linker script directs
1653 (is required to direct) them both into .got. */
1654 if (elf_cris_hash_table (info)->dtpmod_refcount > 0)
1656 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1657 BFD_ASSERT (sgotplt != NULL);
1661 Elf_Internal_Rela outrel;
1664 if (srelgot == NULL)
1665 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1666 BFD_ASSERT (srelgot != NULL);
1667 loc = srelgot->contents;
1668 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1670 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1671 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1672 outrel.r_offset = (sgotplt->output_section->vma
1673 + sgotplt->output_offset
1675 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1676 outrel.r_addend = 0;
1677 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1681 /* For an executable, the GOT entry contents is known. */
1682 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1683 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1686 /* Reverse the sign to mark that we've emitted the
1687 required GOT entry. */
1688 elf_cris_hash_table (info)->dtpmod_refcount
1689 = -elf_cris_hash_table (info)->dtpmod_refcount;
1692 /* The thread-based offset to the local symbol is the
1694 relocation -= elf_hash_table (info)->tls_sec == NULL
1695 ? 0 : elf_hash_table (info)->tls_sec->vma;
1701 bfd_set_error (bfd_error_invalid_operation);
1703 /* We've already informed in cris_elf_check_relocs that
1704 this is an error. */
1709 case R_CRIS_16_GOT_GD:
1710 case R_CRIS_32_GOT_GD:
1711 if (rel->r_addend != 0)
1713 /* We can't do anything for a relocation which is against a
1714 symbol *plus offset*. The GOT holds relocations for
1715 symbols. Make this an error; the compiler isn't allowed
1716 to pass us these kinds of things. */
1717 (*_bfd_error_handler)
1718 (_("%B, section %A: relocation %s with non-zero addend %d"
1719 " against symbol `%s'"),
1722 cris_elf_howto_table[r_type].name,
1724 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1726 bfd_set_error (bfd_error_bad_value);
1730 if (!info->shared && (h == NULL || h->def_regular))
1732 /* Known contents of the GOT. */
1735 /* The symbol is defined in the program, so just write
1736 (1, known_tpoffset) into the GOT. */
1737 relocation -= elf_hash_table (info)->tls_sec->vma;
1741 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1742 ? h->got.offset + 4 : h->got.offset;
1746 off = local_got_offsets[r_symndx];
1747 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1751 /* We use bit 1 of the offset as a flag for GOT entry with
1752 the R_CRIS_DTP reloc, setting it when we've emitted the
1753 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1762 local_got_offsets[r_symndx] |= 2;
1764 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1765 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1770 relocation = sgot->output_offset + off
1771 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1775 /* Not all parts of the GOT entry are known; emit a real
1780 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1781 ? h->got.offset + 4 : h->got.offset;
1784 off = local_got_offsets[r_symndx];
1785 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1789 /* See above re bit 1 and bit 0 usage. */
1792 Elf_Internal_Rela outrel;
1800 local_got_offsets[r_symndx] |= 2;
1802 /* Clear the target contents of the GOT (just as a
1803 gesture; it's already cleared on allocation): this
1804 relocation is not like the other dynrelocs. */
1805 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1806 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1808 if (srelgot == NULL)
1809 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1810 BFD_ASSERT (srelgot != NULL);
1812 if (h != NULL && h->dynindx != -1)
1814 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1819 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1821 /* NULL if we had an error. */
1822 relocation -= elf_hash_table (info)->tls_sec == NULL
1823 ? 0 : elf_hash_table (info)->tls_sec->vma;
1826 outrel.r_offset = (sgot->output_section->vma
1827 + sgot->output_offset
1829 outrel.r_addend = relocation;
1830 loc = srelgot->contents;
1831 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1833 /* NULL if we had an error. */
1834 if (srelgot->contents != NULL)
1835 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1840 relocation = sgot->output_offset + off
1841 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1844 /* The GOT-relative offset to the GOT entry is the
1845 relocation, or for R_CRIS_32_GD, the actual address of
1849 case R_CRIS_32_GOT_TPREL:
1850 case R_CRIS_16_GOT_TPREL:
1851 if (rel->r_addend != 0)
1853 /* We can't do anything for a relocation which is
1854 against a symbol *plus offset*. GOT holds
1855 relocations for symbols. Make this an error; the
1856 compiler isn't allowed to pass us these kinds of
1858 (*_bfd_error_handler)
1859 (_("%B, section %A: relocation %s with non-zero addend %d"
1860 " against symbol `%s'"),
1863 cris_elf_howto_table[r_type].name,
1865 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1866 bfd_set_error (bfd_error_bad_value);
1870 if (!info->shared && (h == NULL || h->def_regular))
1872 /* Known contents of the GOT. */
1875 /* The symbol is defined in the program, so just write
1876 the known_tpoffset into the GOT. */
1877 relocation -= elf_hash_table (info)->tls_sec->vma;
1880 off = h->got.offset;
1882 off = local_got_offsets[r_symndx];
1884 /* Bit 0 is used to mark whether we've emitted the required
1885 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1886 is used similarly for R_CRIS_DTP, see above. */
1894 local_got_offsets[r_symndx] |= 1;
1896 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1901 relocation = sgot->output_offset + off;
1905 /* Emit a real relocation. */
1909 off = h->got.offset;
1911 off = local_got_offsets[r_symndx];
1913 /* See above re usage of bit 0 and 1. */
1916 Elf_Internal_Rela outrel;
1924 local_got_offsets[r_symndx] |= 1;
1926 if (srelgot == NULL)
1927 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1928 BFD_ASSERT (srelgot != NULL);
1930 if (h != NULL && h->dynindx != -1)
1932 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1937 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1939 /* NULL if we had an error. */
1940 relocation -= elf_hash_table (info)->tls_sec == NULL
1941 ? 0 : elf_hash_table (info)->tls_sec->vma;
1944 /* Just "define" the initial contents in some
1945 semi-logical way. */
1946 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1948 outrel.r_offset = (sgot->output_section->vma
1949 + sgot->output_offset
1951 outrel.r_addend = relocation;
1952 loc = srelgot->contents;
1953 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1954 /* NULL if we had an error. */
1955 if (srelgot->contents != NULL)
1956 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1961 relocation = sgot->output_offset + off;
1964 /* The GOT-relative offset to the GOT entry is the relocation. */
1967 case R_CRIS_16_TPREL:
1968 case R_CRIS_32_TPREL:
1969 /* This relocation must only be performed against symbols
1970 defined in an ordinary (non-DSO) object. */
1973 bfd_set_error (bfd_error_invalid_operation);
1975 /* We've already informed in cris_elf_check_relocs that
1976 this is an error. */
1981 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1983 /* If it's undefined, then an error message has already
1985 && h->root.type != bfd_link_hash_undefined)
1987 (*_bfd_error_handler)
1988 (_("%B, section %A: relocation %s is"
1989 " not allowed for symbol: `%s'"
1990 " which is defined outside the program,"
1991 " perhaps a declaration mixup?"),
1994 cris_elf_howto_table[r_type].name,
1996 bfd_set_error (bfd_error_bad_value);
2000 /* NULL if we had an error. */
2001 relocation -= elf_hash_table (info)->tls_sec == NULL
2002 ? 0 : elf_hash_table (info)->tls_sec->vma;
2004 /* The TLS-relative offset is the relocation. */
2012 r = cris_final_link_relocate (howto, input_bfd, input_section,
2013 contents, rel, relocation);
2015 if (r != bfd_reloc_ok)
2017 const char * msg = (const char *) NULL;
2021 case bfd_reloc_overflow:
2022 r = info->callbacks->reloc_overflow
2023 (info, (h ? &h->root : NULL), symname, howto->name,
2024 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2025 if (additional_relocation_error_msg_count > 0)
2027 additional_relocation_error_msg_count--;
2030 case R_CRIS_16_GOTPLT:
2033 /* Not just TLS is involved here, so we make
2034 generation and message depend on -fPIC/-fpic
2036 case R_CRIS_16_GOT_TPREL:
2037 case R_CRIS_16_GOT_GD:
2038 (*_bfd_error_handler)
2039 (_("(too many global variables for -fpic:"
2040 " recompile with -fPIC)"));
2043 case R_CRIS_16_TPREL:
2044 case R_CRIS_16_DTPREL:
2045 (*_bfd_error_handler)
2046 (_("(thread-local data too big for -fpic or"
2047 " -msmall-tls: recompile with -fPIC or"
2048 " -mno-small-tls)"));
2051 /* No known cause for overflow for other relocs. */
2058 case bfd_reloc_undefined:
2059 r = info->callbacks->undefined_symbol
2060 (info, symname, input_bfd, input_section, rel->r_offset,
2064 case bfd_reloc_outofrange:
2065 msg = _("internal error: out of range error");
2068 case bfd_reloc_notsupported:
2069 msg = _("internal error: unsupported relocation error");
2072 case bfd_reloc_dangerous:
2073 msg = _("internal error: dangerous relocation");
2077 msg = _("internal error: unknown error");
2082 r = info->callbacks->warning
2083 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2093 /* Finish up dynamic symbol handling. We set the contents of various
2094 dynamic sections here. */
2097 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
2099 struct bfd_link_info *info;
2100 struct elf_link_hash_entry *h;
2101 Elf_Internal_Sym *sym;
2105 /* Where in the plt entry to put values. */
2106 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2108 /* What offset to add to the distance to the first PLT entry for the
2109 value at plt_off3. */
2110 int plt_off3_value_bias = 4;
2112 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2113 for PIC and non-PIC for v32 and pre-v32). */
2114 int plt_stub_offset = 8;
2115 int plt_entry_size = PLT_ENTRY_SIZE;
2116 const bfd_byte *plt_entry = elf_cris_plt_entry;
2117 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2119 /* Adjust the various PLT entry offsets. */
2120 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2124 plt_off3_value_bias = -2;
2125 plt_stub_offset = 12;
2126 plt_entry_size = PLT_ENTRY_SIZE_V32;
2127 plt_entry = elf_cris_plt_entry_v32;
2128 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2131 dynobj = elf_hash_table (info)->dynobj;
2133 if (h->plt.offset != (bfd_vma) -1)
2141 bfd_vma gotplt_offset
2142 = elf_cris_hash_entry (h)->gotplt_offset;
2143 Elf_Internal_Rela rela;
2145 bfd_boolean has_gotplt = gotplt_offset != 0;
2147 /* Get the index in the procedure linkage table which
2148 corresponds to this symbol. This is the index of this symbol
2149 in all the symbols for which we are making plt entries. The
2150 first entry in the procedure linkage table is reserved. */
2151 /* We have to count backwards here, and the result is only valid as
2152 an index into .got.plt and its relocations. FIXME: Constants... */
2153 bfd_vma gotplt_index = gotplt_offset/4 - 3;
2155 /* Get the offset into the .got table of the entry that corresponds
2156 to this function. Note that we embed knowledge that "incoming"
2157 .got goes after .got.plt in the output without padding (pointer
2158 aligned). However, that knowledge is present in several other
2163 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
2165 /* This symbol has an entry in the procedure linkage table. Set it
2168 BFD_ASSERT (h->dynindx != -1);
2170 splt = bfd_get_section_by_name (dynobj, ".plt");
2171 sgot = bfd_get_section_by_name (dynobj, ".got");
2172 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2173 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2174 BFD_ASSERT (splt != NULL && sgotplt != NULL
2175 && (! has_gotplt || srela != NULL));
2177 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2179 /* Fill in the entry in the procedure linkage table. */
2182 memcpy (splt->contents + h->plt.offset, plt_entry,
2185 /* We need to enter the absolute address of the GOT entry here. */
2186 bfd_put_32 (output_bfd, got_base + got_offset,
2187 splt->contents + h->plt.offset + plt_off1);
2191 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2193 bfd_put_32 (output_bfd, got_offset,
2194 splt->contents + h->plt.offset + plt_off1);
2197 /* Fill in the plt entry and make a relocation, if this is a "real"
2201 /* Fill in the offset to the reloc table. */
2202 bfd_put_32 (output_bfd,
2203 gotplt_index * sizeof (Elf32_External_Rela),
2204 splt->contents + h->plt.offset + plt_off2);
2206 /* Fill in the offset to the first PLT entry, where to "jump". */
2207 bfd_put_32 (output_bfd,
2208 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2209 splt->contents + h->plt.offset + plt_off3);
2211 /* Fill in the entry in the global offset table with the address of
2212 the relocating stub. */
2213 bfd_put_32 (output_bfd,
2214 (splt->output_section->vma
2215 + splt->output_offset
2218 sgotplt->contents + got_offset);
2220 /* Fill in the entry in the .rela.plt section. */
2221 rela.r_offset = (sgotplt->output_section->vma
2222 + sgotplt->output_offset
2224 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2226 loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela);
2227 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2230 if (!h->def_regular)
2232 /* Mark the symbol as undefined, rather than as defined in
2233 the .plt section. Leave the value alone. */
2234 sym->st_shndx = SHN_UNDEF;
2236 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2237 know whether resetting the value is significant; if it really
2238 is, rather than a quirk or bug in the sparc port, then I
2239 believe we'd see this elsewhere. */
2240 /* If the symbol is weak, we do need to clear the value.
2241 Otherwise, the PLT entry would provide a definition for
2242 the symbol even if the symbol wasn't defined anywhere,
2243 and so the symbol would never be NULL. */
2244 if (!h->ref_regular_nonweak)
2249 /* For an ordinary program, we emit .got relocs only for symbols that
2250 are in the dynamic-symbols table and are either defined by the
2251 program or are undefined weak symbols, or are function symbols
2252 where we do not output a PLT: the PLT reloc was output above and all
2253 references to the function symbol are redirected to the PLT. */
2254 if (h->got.offset != (bfd_vma) -1
2255 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2257 || (h->dynindx != -1
2258 && h->plt.offset == (bfd_vma) -1
2260 && h->root.type != bfd_link_hash_undefweak)))
2264 Elf_Internal_Rela rela;
2268 /* This symbol has an entry in the global offset table. Set it up. */
2270 sgot = bfd_get_section_by_name (dynobj, ".got");
2271 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2272 BFD_ASSERT (sgot != NULL && srela != NULL);
2274 rela.r_offset = (sgot->output_section->vma
2275 + sgot->output_offset
2276 + (h->got.offset &~ (bfd_vma) 1));
2278 /* If this is a static link, or it is a -Bsymbolic link and the
2279 symbol is defined locally or was forced to be local because
2280 of a version file, we just want to emit a RELATIVE reloc.
2281 The entry in the global offset table will already have been
2282 initialized in the relocate_section function. */
2283 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2284 if (! elf_hash_table (info)->dynamic_sections_created
2286 && (info->symbolic || h->dynindx == -1)
2289 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2290 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2294 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2295 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2299 loc = srela->contents;
2300 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2301 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2307 Elf_Internal_Rela rela;
2310 /* This symbol needs a copy reloc. Set it up. */
2312 BFD_ASSERT (h->dynindx != -1
2313 && (h->root.type == bfd_link_hash_defined
2314 || h->root.type == bfd_link_hash_defweak));
2316 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2318 BFD_ASSERT (s != NULL);
2320 rela.r_offset = (h->root.u.def.value
2321 + h->root.u.def.section->output_section->vma
2322 + h->root.u.def.section->output_offset);
2323 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2325 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2326 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2329 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2330 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2331 || h == elf_hash_table (info)->hgot)
2332 sym->st_shndx = SHN_ABS;
2337 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2338 offsets were changed, as part of -z combreloc handling, from those we
2342 elf_cris_finish_dynamic_sections (output_bfd, info)
2344 struct bfd_link_info *info;
2350 dynobj = elf_hash_table (info)->dynobj;
2352 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2353 BFD_ASSERT (sgot != NULL);
2354 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2356 if (elf_hash_table (info)->dynamic_sections_created)
2359 Elf32_External_Dyn *dyncon, *dynconend;
2361 splt = bfd_get_section_by_name (dynobj, ".plt");
2362 BFD_ASSERT (splt != NULL && sdyn != NULL);
2364 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2365 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2366 for (; dyncon < dynconend; dyncon++)
2368 Elf_Internal_Dyn dyn;
2371 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2379 s = bfd_get_section_by_name (output_bfd, ".got");
2380 BFD_ASSERT (s != NULL);
2381 dyn.d_un.d_ptr = s->vma;
2382 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2386 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2387 if all symbols are found in the .got (not .got.plt). */
2388 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2389 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2390 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2394 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);
2403 /* The procedure linkage table relocs (DT_JMPREL) should
2404 not be included in the overall relocs (DT_RELA).
2405 Therefore, we override the DT_RELASZ entry here to
2406 make it not include the JMPREL relocs. Since the
2407 linker script arranges for .rela.plt to follow all
2408 other relocation sections, we don't have to worry
2409 about changing the DT_RELA entry. */
2410 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2412 dyn.d_un.d_val -= s->size;
2413 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2418 /* Fill in the first entry in the procedure linkage table. */
2421 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2424 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2425 PLT_ENTRY_SIZE_V32);
2428 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2429 PLT_ENTRY_SIZE_V32);
2430 bfd_put_32 (output_bfd,
2431 sgot->output_section->vma
2432 + sgot->output_offset + 4,
2433 splt->contents + 4);
2435 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2436 = PLT_ENTRY_SIZE_V32;
2442 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2446 memcpy (splt->contents, elf_cris_plt0_entry,
2448 bfd_put_32 (output_bfd,
2449 sgot->output_section->vma
2450 + sgot->output_offset + 4,
2451 splt->contents + 6);
2452 bfd_put_32 (output_bfd,
2453 sgot->output_section->vma
2454 + sgot->output_offset + 8,
2455 splt->contents + 14);
2457 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2464 /* Fill in the first three entries in the global offset table. */
2468 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2470 bfd_put_32 (output_bfd,
2471 sdyn->output_section->vma + sdyn->output_offset,
2473 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2474 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2477 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2482 /* Return the section that should be marked against GC for a given
2486 cris_elf_gc_mark_hook (asection *sec,
2487 struct bfd_link_info *info,
2488 Elf_Internal_Rela *rel,
2489 struct elf_link_hash_entry *h,
2490 Elf_Internal_Sym *sym)
2492 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2496 case R_CRIS_GNU_VTINHERIT:
2497 case R_CRIS_GNU_VTENTRY:
2504 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2507 /* Update the got entry reference counts for the section being removed. */
2510 cris_elf_gc_sweep_hook (bfd *abfd,
2511 struct bfd_link_info *info,
2513 const Elf_Internal_Rela *relocs)
2515 Elf_Internal_Shdr *symtab_hdr;
2516 struct elf_link_hash_entry **sym_hashes;
2517 bfd_signed_vma *local_got_refcounts;
2518 const Elf_Internal_Rela *rel, *relend;
2523 if (info->relocatable)
2526 dynobj = elf_hash_table (info)->dynobj;
2530 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2531 sym_hashes = elf_sym_hashes (abfd);
2532 local_got_refcounts = elf_local_got_refcounts (abfd);
2534 sgot = bfd_get_section_by_name (dynobj, ".got");
2535 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2537 relend = relocs + sec->reloc_count;
2538 for (rel = relocs; rel < relend; rel++)
2540 unsigned long r_symndx;
2541 struct elf_link_hash_entry *h = NULL;
2542 bfd_signed_vma got_element_size = 4;
2543 bfd_signed_vma *specific_refcount = NULL;
2544 enum elf_cris_reloc_type r_type;
2546 r_symndx = ELF32_R_SYM (rel->r_info);
2547 if (r_symndx >= symtab_hdr->sh_info)
2549 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2550 while (h->root.type == bfd_link_hash_indirect
2551 || h->root.type == bfd_link_hash_warning)
2552 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2555 r_type = ELF32_R_TYPE (rel->r_info);
2560 case R_CRIS_16_GOTPLT:
2561 case R_CRIS_32_GOTPLT:
2562 specific_refcount = h != NULL
2563 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2564 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2568 case R_CRIS_32_GOT_GD:
2569 case R_CRIS_16_GOT_GD:
2570 got_element_size = 8;
2571 specific_refcount = h != NULL
2572 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2573 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2576 case R_CRIS_16_GOT_TPREL:
2577 case R_CRIS_32_GOT_TPREL:
2578 specific_refcount = h != NULL
2579 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2580 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2590 case R_CRIS_16_GOT_TPREL:
2591 case R_CRIS_32_GOT_TPREL:
2592 case R_CRIS_32_GOT_GD:
2593 case R_CRIS_16_GOT_GD:
2598 /* If the counters are 0 when we got here, we've
2599 miscounted somehow somewhere, an internal error. */
2600 BFD_ASSERT (h->got.refcount > 0);
2603 BFD_ASSERT (*specific_refcount > 0);
2604 --*specific_refcount;
2605 if (*specific_refcount == 0)
2607 /* We don't need the .got entry any more. */
2608 sgot->size -= got_element_size;
2609 srelgot->size -= sizeof (Elf32_External_Rela);
2615 if (local_got_refcounts != NULL)
2617 /* If the counters are 0 when we got here, we've
2618 miscounted somehow somewhere, an internal error. */
2619 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2620 --local_got_refcounts[r_symndx];
2622 BFD_ASSERT (*specific_refcount > 0);
2623 --*specific_refcount;
2624 if (*specific_refcount == 0)
2626 /* We don't need the .got entry any more. */
2627 sgot->size -= got_element_size;
2629 srelgot->size -= sizeof (Elf32_External_Rela);
2634 case R_CRIS_16_GOTPLT:
2635 case R_CRIS_32_GOTPLT:
2636 /* For local symbols, treat these like GOT relocs. */
2638 goto local_got_reloc;
2641 case R_CRIS_32_PLT_GOTREL:
2642 /* FIXME: We don't garbage-collect away the .got section. */
2643 if (local_got_refcounts != NULL)
2644 local_got_refcounts[-1]--;
2647 case R_CRIS_8_PCREL:
2648 case R_CRIS_16_PCREL:
2649 case R_CRIS_32_PCREL:
2650 case R_CRIS_32_PLT_PCREL:
2653 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2654 && h->plt.refcount > 0)
2659 case R_CRIS_32_DTPREL:
2660 case R_CRIS_16_DTPREL:
2661 elf_cris_hash_table (info)->dtpmod_refcount--;
2662 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
2663 elf_cris_hash_table (info)->next_gotplt_entry -= 8;
2664 BFD_ASSERT (local_got_refcounts != NULL);
2665 local_got_refcounts[-1]--;
2676 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2677 entry but we found we will not create any. Called when we find we will
2678 not have any PLT for this symbol, by for example
2679 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2680 or elf_cris_size_dynamic_sections if no dynamic sections will be
2681 created (we're only linking static objects). */
2684 elf_cris_adjust_gotplt_to_got (h, p)
2685 struct elf_cris_link_hash_entry *h;
2688 struct bfd_link_info *info = (struct bfd_link_info *) p;
2690 if (h->root.root.type == bfd_link_hash_warning)
2691 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2693 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2694 if (h->gotplt_refcount <= 0)
2697 if (h->reg_got_refcount > 0)
2699 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2700 Probably not necessary at this stage, but keeping them accurate
2701 helps avoiding surprises later. */
2702 h->root.got.refcount += h->gotplt_refcount;
2703 h->reg_got_refcount += h->gotplt_refcount;
2704 h->gotplt_refcount = 0;
2708 /* No GOT entry for this symbol. We need to create one. */
2709 bfd *dynobj = elf_hash_table (info)->dynobj;
2713 BFD_ASSERT (dynobj != NULL);
2714 sgot = bfd_get_section_by_name (dynobj, ".got");
2715 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2717 /* Put accurate refcounts there. */
2718 h->root.got.refcount += h->gotplt_refcount;
2719 h->reg_got_refcount = h->gotplt_refcount;
2721 h->gotplt_refcount = 0;
2723 /* We always have a .got and a .rela.got section if there were
2724 GOTPLT relocs in input. */
2725 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2727 /* Allocate space in the .got section. */
2730 /* Allocate relocation space. */
2731 srelgot->size += sizeof (Elf32_External_Rela);
2737 /* Try to fold PLT entries with GOT entries. There are two cases when we
2740 - When all PLT references are GOTPLT references, and there are GOT
2741 references, and this is not the executable. We don't have to
2742 generate a PLT at all.
2744 - When there are both (ordinary) PLT references and GOT references,
2745 and this isn't the executable.
2746 We want to make the PLT reference use the ordinary GOT entry rather
2747 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2748 since the GOT entry will have to be resolved at startup anyway.
2750 Though the latter case is handled when room for the PLT is allocated,
2753 By folding into the GOT, we may need a round-trip to a PLT in the
2754 executable for calls, a loss in performance. Still, losing a
2755 reloc is a win in size and at least in start-up time.
2757 Note that this function is called before symbols are forced local by
2758 version scripts. The differing cases are handled by
2759 elf_cris_hide_symbol. */
2762 elf_cris_try_fold_plt_to_got (h, p)
2763 struct elf_cris_link_hash_entry *h;
2766 struct bfd_link_info *info = (struct bfd_link_info *) p;
2768 /* If there are no GOT references for this symbol, we can't fold any
2769 other reference so there's nothing to do. Likewise if there are no
2770 PLT references; GOTPLT references included. */
2771 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2774 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2775 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2777 if (h->gotplt_refcount == h->root.plt.refcount)
2779 /* The only PLT references are GOTPLT references, and there are GOT
2780 references. Convert PLT to GOT references. */
2781 if (! elf_cris_adjust_gotplt_to_got (h, info))
2784 /* Clear the PLT references, so no PLT will be created. */
2785 h->root.plt.offset = (bfd_vma) -1;
2791 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2792 to use a GOT entry (and create one) rather than requiring a GOTPLT
2796 elf_cris_hide_symbol (info, h, force_local)
2797 struct bfd_link_info *info;
2798 struct elf_link_hash_entry *h;
2799 bfd_boolean force_local;
2801 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2803 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2806 /* Adjust a symbol defined by a dynamic object and referenced by a
2807 regular object. The current definition is in some section of the
2808 dynamic object, but we're not including those sections. We have to
2809 change the definition to something the rest of the link can
2813 elf_cris_adjust_dynamic_symbol (info, h)
2814 struct bfd_link_info *info;
2815 struct elf_link_hash_entry *h;
2819 bfd_size_type plt_entry_size;
2821 dynobj = elf_hash_table (info)->dynobj;
2823 /* Make sure we know what is going on here. */
2824 BFD_ASSERT (dynobj != NULL
2826 || h->u.weakdef != NULL
2829 && !h->def_regular)));
2832 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2833 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2835 /* If this is a function, put it in the procedure linkage table. We
2836 will fill in the contents of the procedure linkage table later,
2837 when we know the address of the .got section. */
2838 if (h->type == STT_FUNC
2841 /* If we link a program (not a DSO), we'll get rid of unnecessary
2842 PLT entries; we point to the actual symbols -- even for pic
2843 relocs, because a program built with -fpic should have the same
2844 result as one built without -fpic, specifically considering weak
2846 FIXME: m68k and i386 differ here, for unclear reasons. */
2850 /* This case can occur if we saw a PLT reloc in an input file,
2851 but the symbol was not defined by a dynamic object. In such
2852 a case, we don't actually need to build a procedure linkage
2853 table, and we can just do an absolute or PC reloc instead, or
2854 change a .got.plt index to a .got index for GOTPLT relocs. */
2855 BFD_ASSERT (h->needs_plt);
2857 h->plt.offset = (bfd_vma) -1;
2859 elf_cris_adjust_gotplt_to_got ((struct
2860 elf_cris_link_hash_entry *) h,
2864 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2865 where a pointer-equivalent symbol was unimportant (i.e. more
2866 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2867 of the PLT. We can't for the executable, because the GOT
2868 entries will point to the PLT there (and be constant). */
2870 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2874 /* GC or folding may have rendered this entry unused. */
2875 if (h->plt.refcount <= 0)
2878 h->plt.offset = (bfd_vma) -1;
2882 /* Make sure this symbol is output as a dynamic symbol. */
2883 if (h->dynindx == -1)
2885 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2889 s = bfd_get_section_by_name (dynobj, ".plt");
2890 BFD_ASSERT (s != NULL);
2892 /* If this is the first .plt entry, make room for the special
2895 s->size += plt_entry_size;
2897 /* If this symbol is not defined in a regular file, and we are
2898 not generating a shared library, then set the symbol to this
2899 location in the .plt. */
2903 h->root.u.def.section = s;
2904 h->root.u.def.value = s->size;
2907 /* If there's already a GOT entry, use that, not a .got.plt. A
2908 GOT field still has a reference count when we get here; it's
2909 not yet changed to an offset. We can't do this for an
2910 executable, because then the reloc associated with the PLT
2911 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2912 this to elf_cris_try_fold_plt_to_got. */
2913 if (info->shared && h->got.refcount > 0)
2915 h->got.refcount += h->plt.refcount;
2917 /* Mark the PLT offset to use the GOT entry by setting the low
2918 bit in the plt offset; it is always a multiple of
2919 plt_entry_size (which is at least a multiple of 2). */
2920 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2922 /* Change the PLT refcount to an offset. */
2923 h->plt.offset = s->size;
2925 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2926 that the got entry should be used instead. */
2927 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2928 h)->gotplt_offset == 0);
2930 /* Make room for this entry. */
2931 s->size += plt_entry_size;
2936 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2937 h->plt.offset = s->size;
2939 /* Make room for this entry. */
2940 s->size += plt_entry_size;
2942 /* We also need to make an entry in the .got.plt section, which
2943 will be placed in the .got section by the linker script. */
2944 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2945 = elf_cris_hash_table (info)->next_gotplt_entry;
2946 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2948 s = bfd_get_section_by_name (dynobj, ".got.plt");
2949 BFD_ASSERT (s != NULL);
2952 /* We also need to make an entry in the .rela.plt section. */
2954 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2955 BFD_ASSERT (s != NULL);
2956 s->size += sizeof (Elf32_External_Rela);
2961 /* Reinitialize the plt offset now that it is not used as a reference
2963 h->plt.offset = (bfd_vma) -1;
2965 /* If this is a weak symbol, and there is a real definition, the
2966 processor independent code will have arranged for us to see the
2967 real definition first, and we can just use the same value. */
2968 if (h->u.weakdef != NULL)
2970 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2971 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2972 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2973 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2977 /* This is a reference to a symbol defined by a dynamic object which
2978 is not a function. */
2980 /* If we are creating a shared library, we must presume that the
2981 only references to the symbol are via the global offset table.
2982 For such cases we need not do anything here; the relocations will
2983 be handled correctly by relocate_section. */
2987 /* If there are no references to this symbol that do not use the
2988 GOT, we don't need to generate a copy reloc. */
2989 if (!h->non_got_ref)
2994 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2995 h->root.root.string);
2999 /* We must allocate the symbol in our .dynbss section, which will
3000 become part of the .bss section of the executable. There will be
3001 an entry for this symbol in the .dynsym section. The dynamic
3002 object will contain position independent code, so all references
3003 from the dynamic object to this symbol will go through the global
3004 offset table. The dynamic linker will use the .dynsym entry to
3005 determine the address it must put in the global offset table, so
3006 both the dynamic object and the regular object will refer to the
3007 same memory location for the variable. */
3009 s = bfd_get_section_by_name (dynobj, ".dynbss");
3010 BFD_ASSERT (s != NULL);
3012 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3013 copy the initial value out of the dynamic object and into the
3014 runtime process image. We need to remember the offset into the
3015 .rela.bss section we are going to use. */
3016 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3020 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3021 BFD_ASSERT (srel != NULL);
3022 srel->size += sizeof (Elf32_External_Rela);
3026 return _bfd_elf_adjust_dynamic_copy (h, s);
3029 /* Look through the relocs for a section during the first phase. */
3032 cris_elf_check_relocs (abfd, info, sec, relocs)
3034 struct bfd_link_info *info;
3036 const Elf_Internal_Rela *relocs;
3039 Elf_Internal_Shdr *symtab_hdr;
3040 struct elf_link_hash_entry **sym_hashes;
3041 bfd_signed_vma *local_got_refcounts;
3042 const Elf_Internal_Rela *rel;
3043 const Elf_Internal_Rela *rel_end;
3048 if (info->relocatable)
3051 dynobj = elf_hash_table (info)->dynobj;
3052 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3053 sym_hashes = elf_sym_hashes (abfd);
3054 local_got_refcounts = elf_local_got_refcounts (abfd);
3060 rel_end = relocs + sec->reloc_count;
3061 for (rel = relocs; rel < rel_end; rel++)
3063 struct elf_link_hash_entry *h;
3064 unsigned long r_symndx;
3065 enum elf_cris_reloc_type r_type;
3066 bfd_signed_vma got_element_size = 4;
3067 unsigned long r_symndx_lgot = INT_MAX;
3069 r_symndx = ELF32_R_SYM (rel->r_info);
3070 if (r_symndx < symtab_hdr->sh_info)
3073 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3077 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3078 while (h->root.type == bfd_link_hash_indirect
3079 || h->root.type == bfd_link_hash_warning)
3080 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3083 r_type = ELF32_R_TYPE (rel->r_info);
3085 /* Some relocs require linker-created sections; we need to hang them
3086 on the first input bfd we found that contained dynamic relocs. */
3089 case R_CRIS_16_DTPREL:
3090 case R_CRIS_32_DTPREL:
3091 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3092 entry at index 3. */
3093 if (elf_cris_hash_table (info)->dtpmod_refcount == 0)
3094 elf_cris_hash_table (info)->next_gotplt_entry += 8;
3095 elf_cris_hash_table (info)->dtpmod_refcount++;
3099 case R_CRIS_16_GOT_GD:
3100 case R_CRIS_32_GOT_GD:
3101 case R_CRIS_32_GOT_TPREL:
3102 case R_CRIS_16_GOT_TPREL:
3105 case R_CRIS_32_GOTREL:
3106 case R_CRIS_32_PLT_GOTREL:
3107 case R_CRIS_32_PLT_PCREL:
3108 case R_CRIS_16_GOTPLT:
3109 case R_CRIS_32_GOTPLT:
3112 elf_hash_table (info)->dynobj = dynobj = abfd;
3114 /* We could handle this if we can get a handle on the
3115 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3116 that, we must insist on dynobj being a specific mach. */
3117 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3119 (*_bfd_error_handler)
3120 (_("%B, section %A:\n v10/v32 compatible object %s"
3121 " must not contain a PIC relocation"),
3126 /* Create the .got section, so we can assume it's always
3127 present whenever there's a dynobj. */
3128 if (!_bfd_elf_create_got_section (dynobj, info))
3133 sgot = bfd_get_section_by_name (dynobj, ".got");
3135 if (local_got_refcounts == NULL)
3139 /* We use index local_got_refcounts[-1] to count all
3140 GOT-relative relocations that do not have explicit
3142 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3143 amt *= sizeof (bfd_signed_vma);
3144 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3145 if (local_got_refcounts == NULL)
3148 local_got_refcounts++;
3149 elf_local_got_refcounts (abfd) = local_got_refcounts;
3157 /* Some relocs require a global offset table (but perhaps not a
3158 specific GOT entry). */
3161 case R_CRIS_16_DTPREL:
3162 case R_CRIS_32_DTPREL:
3163 /* Not requesting .got.rela for an executable: the contents
3164 of the first entry is constant there. For a shared
3165 library, we need .got.rela for the R_CRIS_DTPMOD
3166 relocation at index 3. */
3172 case R_CRIS_16_GOT_GD:
3173 case R_CRIS_32_GOT_GD:
3174 case R_CRIS_32_GOT_TPREL:
3175 case R_CRIS_16_GOT_TPREL:
3178 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3179 entry only for local symbols. Unfortunately, we don't know
3180 until later on if there's a version script that forces the
3181 symbol local. We must have the .rela.got section in place
3182 before we know if the symbol looks global now, so we need
3183 to treat the reloc just like for R_CRIS_16_GOT and
3185 case R_CRIS_16_GOTPLT:
3186 case R_CRIS_32_GOTPLT:
3190 && (h != NULL || info->shared))
3192 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3193 if (srelgot == NULL)
3195 srelgot = bfd_make_section_with_flags (dynobj,
3201 | SEC_LINKER_CREATED
3204 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3214 /* Warn and error for invalid input. */
3217 case R_CRIS_32_TPREL:
3218 case R_CRIS_16_TPREL:
3222 (*_bfd_error_handler)
3223 (_("%B, section %A:\n relocation %s not valid"
3224 " in a shared object;"
3225 " typically an option mixup, recompile with -fPIC"),
3228 cris_elf_howto_table[r_type].name);
3229 /* Don't return FALSE here; we want messages for all of
3230 these and the error behavior is ungraceful
3240 case R_CRIS_16_GOT_GD:
3241 case R_CRIS_32_GOT_GD:
3242 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3243 got_element_size = 8;
3244 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3247 case R_CRIS_16_DTPREL:
3248 case R_CRIS_32_DTPREL:
3249 /* These two just request for the constant-index
3250 module-local tls_index-sized GOT entry, which we add
3254 case R_CRIS_32_GOT_TPREL:
3255 case R_CRIS_16_GOT_TPREL:
3256 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3258 /* Those two relocs also require that a DSO is of type
3259 Initial Exec. Like other targets, we don't reset this
3260 flag even if the relocs are GC:ed away. */
3262 info->flags |= DF_STATIC_TLS;
3265 /* Let's list the other assembler-generated TLS-relocs too,
3266 just to show that they're not forgotten. */
3267 case R_CRIS_16_TPREL:
3268 case R_CRIS_32_TPREL:
3275 case R_CRIS_16_GOTPLT:
3276 case R_CRIS_32_GOTPLT:
3277 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3278 entry) is eliminated. We can only do this for a non-local
3282 elf_cris_hash_entry (h)->gotplt_refcount++;
3283 goto handle_gotplt_reloc;
3285 /* If h is NULL then this is a local symbol, and we must make a
3286 GOT entry for it, so handle it like a GOT reloc. */
3290 case R_CRIS_16_GOT_GD:
3291 case R_CRIS_32_GOT_GD:
3292 case R_CRIS_32_GOT_TPREL:
3293 case R_CRIS_16_GOT_TPREL:
3296 /* This symbol requires a global offset table entry. */
3299 if (h->got.refcount == 0)
3301 /* Make sure this symbol is output as a dynamic symbol. */
3302 if (h->dynindx == -1)
3304 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3309 /* Update the sum of reloc counts for this symbol. */
3316 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3318 /* Allocate space in the .got section. */
3319 sgot->size += got_element_size;
3320 /* Allocate relocation space. */
3321 srelgot->size += sizeof (Elf32_External_Rela);
3323 elf_cris_hash_entry (h)->reg_got_refcount++;
3327 case R_CRIS_16_GOT_GD:
3328 case R_CRIS_32_GOT_GD:
3329 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3331 /* Allocate space in the .got section. */
3332 sgot->size += got_element_size;
3333 /* Allocate relocation space. */
3334 srelgot->size += sizeof (Elf32_External_Rela);
3336 elf_cris_hash_entry (h)->dtp_refcount++;
3339 case R_CRIS_32_GOT_TPREL:
3340 case R_CRIS_16_GOT_TPREL:
3341 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3343 /* Allocate space in the .got section. */
3344 sgot->size += got_element_size;
3345 /* Allocate relocation space. */
3346 srelgot->size += sizeof (Elf32_External_Rela);
3348 elf_cris_hash_entry (h)->tprel_refcount++;
3358 /* This is a global offset table entry for a local symbol. */
3359 if (local_got_refcounts[r_symndx_lgot] == 0)
3361 sgot->size += got_element_size;
3364 /* If we are generating a shared object, we need
3365 to output a R_CRIS_RELATIVE reloc so that the
3366 dynamic linker can adjust this GOT entry.
3367 Similarly for non-regular got entries. */
3368 srelgot->size += sizeof (Elf32_External_Rela);
3371 /* Update the reloc-specific count. */
3372 local_got_refcounts[r_symndx_lgot]++;
3374 /* This one is the sum of all the others. */
3375 local_got_refcounts[r_symndx]++;
3379 case R_CRIS_16_DTPREL:
3380 case R_CRIS_32_DTPREL:
3381 case R_CRIS_32_GOTREL:
3382 /* This reference requires a global offset table.
3383 FIXME: The actual refcount isn't used currently; the .got
3384 section can't be removed if there were any references in the
3386 local_got_refcounts[-1]++;
3389 handle_gotplt_reloc:
3391 case R_CRIS_32_PLT_GOTREL:
3392 /* This reference requires a global offset table. */
3393 local_got_refcounts[-1]++;
3396 case R_CRIS_32_PLT_PCREL:
3397 /* This symbol requires a procedure linkage table entry. We
3398 actually build the entry in adjust_dynamic_symbol,
3399 because this might be a case of linking PIC code which is
3400 never referenced by a dynamic object, in which case we
3401 don't need to generate a procedure linkage table entry
3404 /* Beware: if we'd check for visibility of the symbol here
3405 (and not marking the need for a PLT when non-visible), we'd
3406 get into trouble with keeping handling consistent with
3407 regards to relocs found before definition and GOTPLT
3408 handling. Eliminable PLT entries will be dealt with later
3420 /* Let's help debug shared library creation. Any of these
3421 relocs can be used in shared libs, but pages containing them
3422 cannot be shared. Don't warn for sections we don't care
3423 about, such as debug sections or non-constant sections. We
3424 can't help tables of (global) function pointers, for example,
3425 though they must be emitted in a data section to avoid having
3426 impure text sections. */
3428 && (sec->flags & SEC_ALLOC) != 0
3429 && (sec->flags & SEC_READONLY) != 0)
3431 /* FIXME: How do we make this optionally a warning only? */
3432 (*_bfd_error_handler)
3433 (_("%B, section %A:\n relocation %s should not"
3434 " be used in a shared object; recompile with -fPIC"),
3437 cris_elf_howto_table[r_type].name);
3442 case R_CRIS_8_PCREL:
3443 case R_CRIS_16_PCREL:
3444 case R_CRIS_32_PCREL:
3449 /* Make sure a plt entry is created for this symbol if it
3450 turns out to be a function defined by a dynamic object. */
3451 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3455 /* If we are creating a shared library and this is not a local
3456 symbol, we need to copy the reloc into the shared library.
3457 However when linking with -Bsymbolic and this is a global
3458 symbol which is defined in an object we are including in the
3459 link (i.e., DEF_REGULAR is set), then we can resolve the
3460 reloc directly. At this point we have not seen all the input
3461 files, so it is possible that DEF_REGULAR is not set now but
3462 will be set later (it is never cleared). In case of a weak
3463 definition, DEF_REGULAR may be cleared later by a strong
3464 definition in a shared library. We account for that
3465 possibility below by storing information in the relocs_copied
3466 field of the hash table entry. A similar situation occurs
3467 when creating shared libraries and symbol visibility changes
3468 render the symbol local. */
3470 /* No need to do anything if we're not creating a shared object. */
3474 /* We don't need to handle relocs into sections not going into
3475 the "real" output. */
3476 if ((sec->flags & SEC_ALLOC) == 0)
3479 /* We can only eliminate PC-relative relocs. */
3480 if (r_type == R_CRIS_8_PCREL
3481 || r_type == R_CRIS_16_PCREL
3482 || r_type == R_CRIS_32_PCREL)
3484 /* If the symbol is local, then we can eliminate the reloc. */
3485 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3488 /* If this is with -Bsymbolic and the symbol isn't weak, and
3489 is defined by an ordinary object (the ones we include in
3490 this shared library) then we can also eliminate the
3491 reloc. See comment above for more eliminable cases which
3492 we can't identify at this time. */
3494 && h->root.type != bfd_link_hash_defweak
3498 if ((sec->flags & SEC_READONLY) != 0)
3500 /* FIXME: How do we make this optionally a warning only? */
3501 (*_bfd_error_handler)
3502 (_("%B, section %A:\n relocation %s should not be used"
3503 " in a shared object; recompile with -fPIC"),
3506 cris_elf_howto_table[r_type].name);
3510 /* We create a reloc section in dynobj and make room for this
3516 name = (bfd_elf_string_from_elf_section
3518 elf_elfheader (abfd)->e_shstrndx,
3519 elf_section_data (sec)->rel_hdr.sh_name));
3523 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
3524 && strcmp (bfd_get_section_name (abfd, sec),
3527 sreloc = bfd_get_section_by_name (dynobj, name);
3530 sreloc = bfd_make_section_with_flags (dynobj, name,
3535 | SEC_LINKER_CREATED
3538 || !bfd_set_section_alignment (dynobj, sreloc, 2))
3541 if (sec->flags & SEC_READONLY)
3542 info->flags |= DF_TEXTREL;
3545 sreloc->size += sizeof (Elf32_External_Rela);
3547 /* If we are linking with -Bsymbolic, we count the number of PC
3548 relative relocations we have entered for this symbol, so that
3549 we can discard them again if the symbol is later defined by a
3550 regular object. We know that h is really a pointer to an
3551 elf_cris_link_hash_entry. */
3552 if ((r_type == R_CRIS_8_PCREL
3553 || r_type == R_CRIS_16_PCREL
3554 || r_type == R_CRIS_32_PCREL)
3557 struct elf_cris_link_hash_entry *eh;
3558 struct elf_cris_pcrel_relocs_copied *p;
3560 eh = elf_cris_hash_entry (h);
3562 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3563 if (p->section == sreloc)
3568 p = ((struct elf_cris_pcrel_relocs_copied *)
3569 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3572 p->next = eh->pcrel_relocs_copied;
3573 eh->pcrel_relocs_copied = p;
3574 p->section = sreloc;
3582 /* This relocation describes the C++ object vtable hierarchy.
3583 Reconstruct it for later use during GC. */
3584 case R_CRIS_GNU_VTINHERIT:
3585 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3589 /* This relocation describes which C++ vtable entries are actually
3590 used. Record for later use during GC. */
3591 case R_CRIS_GNU_VTENTRY:
3592 BFD_ASSERT (h != NULL);
3594 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3598 case R_CRIS_16_TPREL:
3599 case R_CRIS_32_TPREL:
3600 /* Already warned above, when necessary. */
3604 /* Other relocs do not appear here. */
3605 bfd_set_error (bfd_error_bad_value);
3613 /* Set the sizes of the dynamic sections. */
3616 elf_cris_size_dynamic_sections (output_bfd, info)
3617 bfd *output_bfd ATTRIBUTE_UNUSED;
3618 struct bfd_link_info *info;
3625 dynobj = elf_hash_table (info)->dynobj;
3626 BFD_ASSERT (dynobj != NULL);
3628 if (elf_hash_table (info)->dynamic_sections_created)
3630 /* Set the contents of the .interp section to the interpreter. */
3631 if (info->executable)
3633 s = bfd_get_section_by_name (dynobj, ".interp");
3634 BFD_ASSERT (s != NULL);
3635 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3636 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3641 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3642 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3643 elf_cris_adjust_gotplt_to_got,
3646 /* We may have created entries in the .rela.got section.
3647 However, if we are not creating the dynamic sections, we will
3648 not actually use these entries. Reset the size of .rela.got,
3649 which will cause it to get stripped from the output file
3651 s = bfd_get_section_by_name (dynobj, ".rela.got");
3656 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3657 relative relocs against symbols defined in a regular object. We
3658 allocated space for them in the check_relocs routine, but we will not
3659 fill them in in the relocate_section routine. We also discard space
3660 for relocs that have become for local symbols due to symbol
3661 visibility changes. For programs, we discard space for relocs for
3662 symbols not referenced by any dynamic object. */
3664 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3665 elf_cris_discard_excess_dso_dynamics,
3668 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
3669 elf_cris_discard_excess_program_dynamics,
3672 /* The check_relocs and adjust_dynamic_symbol entry points have
3673 determined the sizes of the various dynamic sections. Allocate
3677 for (s = dynobj->sections; s != NULL; s = s->next)
3681 if ((s->flags & SEC_LINKER_CREATED) == 0)
3684 /* It's OK to base decisions on the section name, because none
3685 of the dynobj section names depend upon the input files. */
3686 name = bfd_get_section_name (dynobj, s);
3688 if (strcmp (name, ".plt") == 0)
3690 /* Remember whether there is a PLT. */
3693 else if (strcmp (name, ".got.plt") == 0)
3695 /* The .got.plt contains the .got header as well as the
3696 actual .got.plt contents. The .got header may contain a
3697 R_CRIS_DTPMOD entry at index 3. */
3698 s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0
3701 else if (CONST_STRNEQ (name, ".rela"))
3703 if (strcmp (name, ".rela.got") == 0
3704 && elf_cris_hash_table (info)->dtpmod_refcount != 0
3706 s->size += sizeof (Elf32_External_Rela);
3710 /* Remember whether there are any reloc sections other
3712 if (strcmp (name, ".rela.plt") != 0)
3715 /* We use the reloc_count field as a counter if we need
3716 to copy relocs into the output file. */
3720 else if (! CONST_STRNEQ (name, ".got")
3721 && strcmp (name, ".dynbss") != 0)
3723 /* It's not one of our sections, so don't allocate space. */
3729 /* If we don't need this section, strip it from the
3730 output file. This is mostly to handle .rela.bss and
3731 .rela.plt. We must create both sections in
3732 create_dynamic_sections, because they must be created
3733 before the linker maps input sections to output
3734 sections. The linker does that before
3735 adjust_dynamic_symbol is called, and it is that
3736 function which decides whether anything needs to go
3737 into these sections. */
3738 s->flags |= SEC_EXCLUDE;
3742 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3745 /* Allocate memory for the section contents. We use bfd_zalloc here
3746 in case unused entries are not reclaimed before the section's
3747 contents are written out. This should not happen, but this way
3748 if it does, we will not write out garbage. For reloc sections,
3749 this will make entries have the type R_CRIS_NONE. */
3750 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3751 if (s->contents == NULL)
3755 if (elf_hash_table (info)->dynamic_sections_created)
3757 /* Add some entries to the .dynamic section. We fill in the
3758 values later, in elf_cris_finish_dynamic_sections, but we
3759 must add the entries now so that we get the correct size for
3760 the .dynamic section. The DT_DEBUG entry is filled in by the
3761 dynamic linker and used by the debugger. */
3762 #define add_dynamic_entry(TAG, VAL) \
3763 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3767 if (!add_dynamic_entry (DT_DEBUG, 0))
3773 if (!add_dynamic_entry (DT_PLTGOT, 0)
3774 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3775 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3776 || !add_dynamic_entry (DT_JMPREL, 0))
3782 if (!add_dynamic_entry (DT_RELA, 0)
3783 || !add_dynamic_entry (DT_RELASZ, 0)
3784 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3788 if ((info->flags & DF_TEXTREL) != 0)
3790 if (!add_dynamic_entry (DT_TEXTREL, 0))
3792 info->flags |= DF_TEXTREL;
3795 #undef add_dynamic_entry
3800 /* This function is called via elf_cris_link_hash_traverse if we are
3801 creating a shared object. In the -Bsymbolic case, it discards the
3802 space allocated to copy PC relative relocs against symbols which
3803 are defined in regular objects. For the normal non-symbolic case,
3804 we also discard space for relocs that have become local due to
3805 symbol visibility changes. We allocated space for them in the
3806 check_relocs routine, but we won't fill them in in the
3807 relocate_section routine. */
3810 elf_cris_discard_excess_dso_dynamics (h, inf)
3811 struct elf_cris_link_hash_entry *h;
3814 struct elf_cris_pcrel_relocs_copied *s;
3815 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3817 if (h->root.root.type == bfd_link_hash_warning)
3818 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3820 /* If a symbol has been forced local or we have found a regular
3821 definition for the symbolic link case, then we won't be needing
3823 if (h->root.def_regular
3824 && (h->root.forced_local
3827 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3828 s->section->size -= s->count * sizeof (Elf32_External_Rela);
3834 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3835 creating a shared object. We discard space for relocs for symbols put
3836 in the .got, but which we found we do not have to resolve at run-time. */
3839 elf_cris_discard_excess_program_dynamics (h, inf)
3840 struct elf_cris_link_hash_entry *h;
3843 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3845 if (h->root.root.type == bfd_link_hash_warning)
3846 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3848 /* If we're not creating a shared library and have a symbol which is
3849 referred to by .got references, but the symbol is defined locally,
3850 (or rather, not defined by a DSO) then lose the reloc for the .got
3851 (don't allocate room for it). Likewise for relocs for something
3852 for which we create a PLT. */
3853 if (!h->root.def_dynamic
3854 || h->root.plt.refcount > 0)
3856 if (h->reg_got_refcount > 0
3857 /* The size of this section is only valid and in sync with the
3858 various reference counts if we do dynamic; don't decrement it
3860 && elf_hash_table (info)->dynamic_sections_created)
3862 bfd *dynobj = elf_hash_table (info)->dynobj;
3865 BFD_ASSERT (dynobj != NULL);
3867 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3869 BFD_ASSERT (srelgot != NULL);
3871 srelgot->size -= sizeof (Elf32_External_Rela);
3874 /* If the locally-defined symbol isn't used by a DSO, then we don't
3875 have to export it as a dynamic symbol. This was already done for
3876 functions; doing this for all symbols would presumably not
3877 introduce new problems. Of course we don't do this if we're
3878 exporting all dynamic symbols. */
3879 if (! info->export_dynamic
3880 && h->root.dynindx != -1
3881 && !h->root.def_dynamic
3882 && !h->root.ref_dynamic)
3884 h->root.dynindx = -1;
3885 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3886 h->root.dynstr_index);
3893 /* Reject a file depending on presence and expectation of prefixed
3894 underscores on symbols. */
3897 cris_elf_object_p (abfd)
3900 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3903 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3904 return (bfd_get_symbol_leading_char (abfd) == '_');
3906 return (bfd_get_symbol_leading_char (abfd) == 0);
3909 /* Mark presence or absence of leading underscore. Set machine type
3910 flags from mach type. */
3913 cris_elf_final_write_processing (abfd, linker)
3915 bfd_boolean linker ATTRIBUTE_UNUSED;
3917 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3919 e_flags &= ~EF_CRIS_UNDERSCORE;
3920 if (bfd_get_symbol_leading_char (abfd) == '_')
3921 e_flags |= EF_CRIS_UNDERSCORE;
3923 switch (bfd_get_mach (abfd))
3925 case bfd_mach_cris_v0_v10:
3926 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3929 case bfd_mach_cris_v10_v32:
3930 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3933 case bfd_mach_cris_v32:
3934 e_flags |= EF_CRIS_VARIANT_V32;
3938 _bfd_abort (__FILE__, __LINE__,
3939 _("Unexpected machine number"));
3942 elf_elfheader (abfd)->e_flags = e_flags;
3945 /* Set the mach type from e_flags value. */
3948 cris_elf_set_mach_from_flags (abfd, flags)
3950 unsigned long flags;
3952 switch (flags & EF_CRIS_VARIANT_MASK)
3954 case EF_CRIS_VARIANT_ANY_V0_V10:
3955 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
3958 case EF_CRIS_VARIANT_V32:
3959 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
3962 case EF_CRIS_VARIANT_COMMON_V10_V32:
3963 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
3967 /* Since we don't recognize them, we obviously can't support them
3968 with this code; we'd have to require that all future handling
3969 would be optional. */
3970 bfd_set_error (bfd_error_wrong_format);
3977 /* Display the flags field. */
3980 cris_elf_print_private_bfd_data (abfd, ptr)
3984 FILE *file = (FILE *) ptr;
3986 BFD_ASSERT (abfd != NULL && ptr != NULL);
3988 _bfd_elf_print_private_bfd_data (abfd, ptr);
3990 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3992 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3993 fprintf (file, _(" [symbols have a _ prefix]"));
3994 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3995 == EF_CRIS_VARIANT_COMMON_V10_V32)
3996 fprintf (file, _(" [v10 and v32]"));
3997 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3998 == EF_CRIS_VARIANT_V32)
3999 fprintf (file, _(" [v32]"));
4005 /* Don't mix files with and without a leading underscore. */
4008 cris_elf_merge_private_bfd_data (ibfd, obfd)
4014 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4017 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4018 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4021 imach = bfd_get_mach (ibfd);
4023 if (! elf_flags_init (obfd))
4025 /* This happens when ld starts out with a 'blank' output file. */
4026 elf_flags_init (obfd) = TRUE;
4028 /* We ignore the linker-set mach, and instead set it according to
4029 the first input file. This would also happen if we could
4030 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4031 This allows us to keep the same linker config across
4032 cris(v0..v10) and crisv32. The drawback is that we can't force
4033 the output type, which might be a sane thing to do for a
4034 v10+v32 compatibility object. */
4035 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4039 if (bfd_get_symbol_leading_char (ibfd)
4040 != bfd_get_symbol_leading_char (obfd))
4042 (*_bfd_error_handler)
4043 (bfd_get_symbol_leading_char (ibfd) == '_'
4044 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4045 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4047 bfd_set_error (bfd_error_bad_value);
4051 omach = bfd_get_mach (obfd);
4055 /* We can get an incompatible combination only if either is
4056 bfd_mach_cris_v32, and the other one isn't compatible. */
4057 if ((imach == bfd_mach_cris_v32
4058 && omach != bfd_mach_cris_v10_v32)
4059 || (omach == bfd_mach_cris_v32
4060 && imach != bfd_mach_cris_v10_v32))
4062 (*_bfd_error_handler)
4063 ((imach == bfd_mach_cris_v32)
4064 ? _("%B contains CRIS v32 code, incompatible"
4065 " with previous objects")
4066 : _("%B contains non-CRIS-v32 code, incompatible"
4067 " with previous objects"),
4069 bfd_set_error (bfd_error_bad_value);
4073 /* We don't have to check the case where the input is compatible
4074 with v10 and v32, because the output is already known to be set
4075 to the other (compatible) mach. */
4076 if (omach == bfd_mach_cris_v10_v32
4077 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4084 /* Do side-effects of e_flags copying to obfd. */
4087 cris_elf_copy_private_bfd_data (ibfd, obfd)
4091 /* Call the base function. */
4092 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4095 /* If output is big-endian for some obscure reason, stop here. */
4096 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4099 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4100 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4103 /* Do what we really came here for. */
4104 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4107 static enum elf_reloc_type_class
4108 elf_cris_reloc_type_class (rela)
4109 const Elf_Internal_Rela *rela;
4111 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4114 case R_CRIS_RELATIVE:
4115 return reloc_class_relative;
4116 case R_CRIS_JUMP_SLOT:
4117 return reloc_class_plt;
4119 return reloc_class_copy;
4121 return reloc_class_normal;
4125 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4126 two GOT entries from three types with two different sizes. We handle
4127 it as a single entry, so we can use the regular offset-calculation
4131 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4132 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4133 struct elf_link_hash_entry *hr,
4135 unsigned long symndx)
4137 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4138 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4141 /* We may have one regular GOT entry or up to two TLS GOT
4145 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4147 BFD_ASSERT (local_got_refcounts != NULL);
4149 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4151 /* We can't have a variable referred to both as a regular
4152 variable and through TLS relocs. */
4153 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4154 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4158 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4161 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4166 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4167 if (hh->reg_got_refcount > 0)
4169 /* The actual error-on-input is emitted elsewhere. */
4170 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4174 if (hh->dtp_refcount > 0)
4177 if (hh->tprel_refcount > 0)
4184 #define ELF_ARCH bfd_arch_cris
4185 #define ELF_MACHINE_CODE EM_CRIS
4186 #define ELF_MAXPAGESIZE 0x2000
4188 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4189 #define TARGET_LITTLE_NAME "elf32-cris"
4190 #define elf_symbol_leading_char 0
4192 #define elf_info_to_howto_rel NULL
4193 #define elf_info_to_howto cris_info_to_howto_rela
4194 #define elf_backend_relocate_section cris_elf_relocate_section
4195 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4196 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4197 #define elf_backend_check_relocs cris_elf_check_relocs
4198 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4199 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4201 #define elf_backend_can_gc_sections 1
4202 #define elf_backend_can_refcount 1
4204 #define elf_backend_object_p cris_elf_object_p
4205 #define elf_backend_final_write_processing \
4206 cris_elf_final_write_processing
4207 #define bfd_elf32_bfd_print_private_bfd_data \
4208 cris_elf_print_private_bfd_data
4209 #define bfd_elf32_bfd_merge_private_bfd_data \
4210 cris_elf_merge_private_bfd_data
4211 #define bfd_elf32_bfd_copy_private_bfd_data \
4212 cris_elf_copy_private_bfd_data
4214 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4215 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4217 #define bfd_elf32_bfd_link_hash_table_create \
4218 elf_cris_link_hash_table_create
4219 #define elf_backend_adjust_dynamic_symbol \
4220 elf_cris_adjust_dynamic_symbol
4221 #define elf_backend_size_dynamic_sections \
4222 elf_cris_size_dynamic_sections
4223 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4224 #define elf_backend_finish_dynamic_symbol \
4225 elf_cris_finish_dynamic_symbol
4226 #define elf_backend_finish_dynamic_sections \
4227 elf_cris_finish_dynamic_sections
4228 #define elf_backend_create_dynamic_sections \
4229 _bfd_elf_create_dynamic_sections
4230 #define bfd_elf32_bfd_final_link \
4231 bfd_elf_gc_common_final_link
4232 #define elf_backend_hide_symbol elf_cris_hide_symbol
4233 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4235 #define elf_backend_want_got_plt 1
4236 #define elf_backend_plt_readonly 1
4237 #define elf_backend_want_plt_sym 0
4238 #define elf_backend_got_header_size 12
4239 #define elf_backend_got_elt_size elf_cris_got_elt_size
4241 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4242 linking and libraries (if it's a win of any significance). Until then,
4243 take the easy route. */
4244 #define elf_backend_may_use_rel_p 0
4245 #define elf_backend_may_use_rela_p 1
4246 #define elf_backend_rela_normal 1
4248 #include "elf32-target.h"
4250 #undef TARGET_LITTLE_SYM
4251 #undef TARGET_LITTLE_NAME
4252 #undef elf_symbol_leading_char
4254 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4255 #define TARGET_LITTLE_NAME "elf32-us-cris"
4256 #define elf_symbol_leading_char '_'
4258 #define elf32_bed elf32_us_cris_bed
4260 #include "elf32-target.h"