Commit | Line | Data |
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06c15ad7 | 1 | /* CRIS-specific support for 32-bit ELF. |
3eb128b2 AM |
2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005 |
3 | Free Software Foundation, Inc. | |
06c15ad7 HPN |
4 | Contributed by Axis Communications AB. |
5 | Written by Hans-Peter Nilsson, based on elf32-fr30.c | |
915e5146 | 6 | PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c. |
06c15ad7 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
06c15ad7 | 9 | |
ae9a127f NC |
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 2 of the License, or | |
13 | (at your option) any later version. | |
06c15ad7 | 14 | |
ae9a127f NC |
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. | |
06c15ad7 | 19 | |
ae9a127f NC |
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
06c15ad7 HPN |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | #include "elf/cris.h" | |
29 | ||
30 | /* Forward declarations. */ | |
31 | static reloc_howto_type * cris_reloc_type_lookup | |
32 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
33 | ||
a7c10850 | 34 | static void cris_info_to_howto_rela |
947216bf | 35 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
06c15ad7 | 36 | |
bac23f82 HPN |
37 | static bfd_reloc_status_type cris_elf_pcrel_reloc |
38 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
39 | ||
b34976b6 | 40 | static bfd_boolean cris_elf_grok_prstatus |
72209a1f HPN |
41 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
42 | ||
b34976b6 | 43 | static bfd_boolean cris_elf_grok_psinfo |
72209a1f HPN |
44 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
45 | ||
b34976b6 | 46 | static bfd_boolean cris_elf_relocate_section |
06c15ad7 HPN |
47 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
48 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
49 | ||
50 | static bfd_reloc_status_type cris_final_link_relocate | |
51 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, | |
52 | Elf_Internal_Rela *, bfd_vma)); | |
53 | ||
b34976b6 | 54 | static bfd_boolean cris_elf_gc_sweep_hook |
06c15ad7 HPN |
55 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
56 | const Elf_Internal_Rela *)); | |
57 | ||
58 | static asection * cris_elf_gc_mark_hook | |
1e2f5b6e | 59 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
06c15ad7 HPN |
60 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
61 | ||
b34976b6 | 62 | static bfd_boolean cris_elf_object_p PARAMS ((bfd *)); |
4da81684 | 63 | |
b34976b6 | 64 | static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean)); |
4da81684 | 65 | |
bac23f82 HPN |
66 | static bfd_boolean cris_elf_set_mach_from_flags |
67 | PARAMS ((bfd *, unsigned long int)); | |
68 | ||
b34976b6 | 69 | static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); |
4da81684 | 70 | |
b34976b6 | 71 | static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); |
bac23f82 | 72 | static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); |
4da81684 | 73 | |
915e5146 | 74 | struct elf_cris_link_hash_entry; |
b34976b6 | 75 | static bfd_boolean elf_cris_discard_excess_dso_dynamics |
4d96d128 | 76 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 77 | static bfd_boolean elf_cris_discard_excess_program_dynamics |
915e5146 | 78 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 79 | static bfd_boolean elf_cris_adjust_gotplt_to_got |
915e5146 | 80 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 81 | static bfd_boolean elf_cris_try_fold_plt_to_got |
915e5146 HPN |
82 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
83 | static struct bfd_hash_entry *elf_cris_link_hash_newfunc | |
84 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
85 | static struct bfd_link_hash_table *elf_cris_link_hash_table_create | |
86 | PARAMS ((bfd *)); | |
b34976b6 | 87 | static bfd_boolean elf_cris_adjust_dynamic_symbol |
915e5146 | 88 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 89 | static bfd_boolean cris_elf_check_relocs |
99c79b2e AJ |
90 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
91 | const Elf_Internal_Rela *)); | |
92 | ||
b34976b6 | 93 | static bfd_boolean elf_cris_size_dynamic_sections |
915e5146 | 94 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 95 | static bfd_boolean elf_cris_finish_dynamic_symbol |
915e5146 HPN |
96 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
97 | Elf_Internal_Sym *)); | |
b34976b6 | 98 | static bfd_boolean elf_cris_finish_dynamic_sections |
915e5146 HPN |
99 | PARAMS ((bfd *, struct bfd_link_info *)); |
100 | static void elf_cris_hide_symbol | |
b34976b6 | 101 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean)); |
99e4ae17 | 102 | static enum elf_reloc_type_class elf_cris_reloc_type_class |
f51e552e | 103 | PARAMS ((const Elf_Internal_Rela *)); |
915e5146 | 104 | |
06c15ad7 HPN |
105 | static reloc_howto_type cris_elf_howto_table [] = |
106 | { | |
107 | /* This reloc does nothing. */ | |
108 | HOWTO (R_CRIS_NONE, /* type */ | |
109 | 0, /* rightshift */ | |
110 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
111 | 32, /* bitsize */ | |
b34976b6 | 112 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
113 | 0, /* bitpos */ |
114 | complain_overflow_bitfield, /* complain_on_overflow */ | |
115 | bfd_elf_generic_reloc, /* special_function */ | |
116 | "R_CRIS_NONE", /* name */ | |
b34976b6 | 117 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
118 | 0, /* src_mask */ |
119 | 0, /* dst_mask */ | |
b34976b6 | 120 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
121 | |
122 | /* An 8 bit absolute relocation. */ | |
123 | HOWTO (R_CRIS_8, /* type */ | |
124 | 0, /* rightshift */ | |
125 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
126 | 8, /* bitsize */ | |
b34976b6 | 127 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
128 | 0, /* bitpos */ |
129 | complain_overflow_bitfield, /* complain_on_overflow */ | |
130 | bfd_elf_generic_reloc, /* special_function */ | |
131 | "R_CRIS_8", /* name */ | |
b34976b6 | 132 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
133 | 0x0000, /* src_mask */ |
134 | 0x00ff, /* dst_mask */ | |
b34976b6 | 135 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
136 | |
137 | /* A 16 bit absolute relocation. */ | |
138 | HOWTO (R_CRIS_16, /* type */ | |
139 | 0, /* rightshift */ | |
140 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
141 | 16, /* bitsize */ | |
b34976b6 | 142 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
143 | 0, /* bitpos */ |
144 | complain_overflow_bitfield, /* complain_on_overflow */ | |
145 | bfd_elf_generic_reloc, /* special_function */ | |
146 | "R_CRIS_16", /* name */ | |
b34976b6 | 147 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
148 | 0x00000000, /* src_mask */ |
149 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 150 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
151 | |
152 | /* A 32 bit absolute relocation. */ | |
153 | HOWTO (R_CRIS_32, /* type */ | |
154 | 0, /* rightshift */ | |
155 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
156 | 32, /* bitsize */ | |
b34976b6 | 157 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
158 | 0, /* bitpos */ |
159 | complain_overflow_bitfield, /* complain_on_overflow */ | |
160 | bfd_elf_generic_reloc, /* special_function */ | |
161 | "R_CRIS_32", /* name */ | |
b34976b6 | 162 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
163 | 0x00000000, /* src_mask */ |
164 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 165 | FALSE), /* pcrel_offset */ |
06c15ad7 | 166 | |
915e5146 | 167 | /* An 8 bit PC-relative relocation. */ |
06c15ad7 HPN |
168 | HOWTO (R_CRIS_8_PCREL, /* type */ |
169 | 0, /* rightshift */ | |
170 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
171 | 8, /* bitsize */ | |
b34976b6 | 172 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
173 | 0, /* bitpos */ |
174 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 175 | cris_elf_pcrel_reloc, /* special_function */ |
06c15ad7 | 176 | "R_CRIS_8_PCREL", /* name */ |
b34976b6 | 177 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
178 | 0x0000, /* src_mask */ |
179 | 0x00ff, /* dst_mask */ | |
b34976b6 | 180 | TRUE), /* pcrel_offset */ |
06c15ad7 | 181 | |
915e5146 | 182 | /* A 16 bit PC-relative relocation. */ |
06c15ad7 HPN |
183 | HOWTO (R_CRIS_16_PCREL, /* type */ |
184 | 0, /* rightshift */ | |
185 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
186 | 16, /* bitsize */ | |
b34976b6 | 187 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
188 | 0, /* bitpos */ |
189 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 190 | cris_elf_pcrel_reloc, /* special_function */ |
44aa49bb | 191 | "R_CRIS_16_PCREL", /* name */ |
b34976b6 | 192 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
193 | 0x00000000, /* src_mask */ |
194 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 195 | TRUE), /* pcrel_offset */ |
06c15ad7 | 196 | |
915e5146 | 197 | /* A 32 bit PC-relative relocation. */ |
06c15ad7 HPN |
198 | HOWTO (R_CRIS_32_PCREL, /* type */ |
199 | 0, /* rightshift */ | |
200 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
201 | 32, /* bitsize */ | |
b34976b6 | 202 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
203 | 0, /* bitpos */ |
204 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 205 | cris_elf_pcrel_reloc, /* special_function */ |
44aa49bb | 206 | "R_CRIS_32_PCREL", /* name */ |
b34976b6 | 207 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
208 | 0x00000000, /* src_mask */ |
209 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 210 | TRUE), /* pcrel_offset */ |
06c15ad7 | 211 | |
915e5146 HPN |
212 | /* GNU extension to record C++ vtable hierarchy. */ |
213 | HOWTO (R_CRIS_GNU_VTINHERIT, /* type */ | |
06c15ad7 HPN |
214 | 0, /* rightshift */ |
215 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
216 | 0, /* bitsize */ | |
b34976b6 | 217 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
218 | 0, /* bitpos */ |
219 | complain_overflow_dont, /* complain_on_overflow */ | |
220 | NULL, /* special_function */ | |
221 | "R_CRIS_GNU_VTINHERIT", /* name */ | |
b34976b6 | 222 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
223 | 0, /* src_mask */ |
224 | 0, /* dst_mask */ | |
b34976b6 | 225 | FALSE), /* pcrel_offset */ |
06c15ad7 | 226 | |
915e5146 HPN |
227 | /* GNU extension to record C++ vtable member usage. */ |
228 | HOWTO (R_CRIS_GNU_VTENTRY, /* type */ | |
06c15ad7 HPN |
229 | 0, /* rightshift */ |
230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
231 | 0, /* bitsize */ | |
b34976b6 | 232 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
233 | 0, /* bitpos */ |
234 | complain_overflow_dont, /* complain_on_overflow */ | |
235 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
236 | "R_CRIS_GNU_VTENTRY", /* name */ | |
b34976b6 | 237 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
238 | 0, /* src_mask */ |
239 | 0, /* dst_mask */ | |
b34976b6 | 240 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
241 | |
242 | /* This is used only by the dynamic linker. The symbol should exist | |
243 | both in the object being run and in some shared library. The | |
244 | dynamic linker copies the data addressed by the symbol from the | |
245 | shared library into the object, because the object being | |
246 | run has to have the data at some particular address. */ | |
247 | HOWTO (R_CRIS_COPY, /* type */ | |
248 | 0, /* rightshift */ | |
249 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
250 | 32, /* bitsize */ | |
b34976b6 | 251 | FALSE, /* pc_relative */ |
915e5146 HPN |
252 | 0, /* bitpos */ |
253 | complain_overflow_bitfield, /* complain_on_overflow */ | |
254 | bfd_elf_generic_reloc, /* special_function */ | |
255 | "R_CRIS_COPY", /* name */ | |
b34976b6 | 256 | FALSE, /* partial_inplace */ |
915e5146 HPN |
257 | 0, /* src_mask */ |
258 | 0, /* dst_mask */ | |
b34976b6 | 259 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
260 | |
261 | /* Like R_CRIS_32, but used when setting global offset table entries. */ | |
262 | HOWTO (R_CRIS_GLOB_DAT, /* type */ | |
263 | 0, /* rightshift */ | |
264 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
265 | 32, /* bitsize */ | |
b34976b6 | 266 | FALSE, /* pc_relative */ |
915e5146 HPN |
267 | 0, /* bitpos */ |
268 | complain_overflow_bitfield, /* complain_on_overflow */ | |
269 | bfd_elf_generic_reloc, /* special_function */ | |
270 | "R_CRIS_GLOB_DAT", /* name */ | |
b34976b6 | 271 | FALSE, /* partial_inplace */ |
915e5146 HPN |
272 | 0, /* src_mask */ |
273 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 274 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
275 | |
276 | /* Marks a procedure linkage table entry for a symbol. */ | |
277 | HOWTO (R_CRIS_JUMP_SLOT, /* type */ | |
278 | 0, /* rightshift */ | |
279 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
280 | 32, /* bitsize */ | |
b34976b6 | 281 | FALSE, /* pc_relative */ |
915e5146 HPN |
282 | 0, /* bitpos */ |
283 | complain_overflow_bitfield, /* complain_on_overflow */ | |
284 | bfd_elf_generic_reloc, /* special_function */ | |
285 | "R_CRIS_JUMP_SLOT", /* name */ | |
b34976b6 | 286 | FALSE, /* partial_inplace */ |
915e5146 HPN |
287 | 0, /* src_mask */ |
288 | 0, /* dst_mask */ | |
b34976b6 | 289 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
290 | |
291 | /* Used only by the dynamic linker. When the object is run, this | |
292 | longword is set to the load address of the object, plus the | |
293 | addend. */ | |
294 | HOWTO (R_CRIS_RELATIVE, /* type */ | |
295 | 0, /* rightshift */ | |
296 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
297 | 32, /* bitsize */ | |
b34976b6 | 298 | FALSE, /* pc_relative */ |
915e5146 HPN |
299 | 0, /* bitpos */ |
300 | complain_overflow_bitfield, /* complain_on_overflow */ | |
301 | bfd_elf_generic_reloc, /* special_function */ | |
302 | "R_CRIS_RELATIVE", /* name */ | |
b34976b6 | 303 | FALSE, /* partial_inplace */ |
915e5146 HPN |
304 | 0, /* src_mask */ |
305 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 306 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
307 | |
308 | /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */ | |
309 | HOWTO (R_CRIS_16_GOT, /* type */ | |
310 | 0, /* rightshift */ | |
311 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
312 | 16, /* bitsize */ | |
b34976b6 | 313 | FALSE, /* pc_relative */ |
915e5146 HPN |
314 | 0, /* bitpos */ |
315 | complain_overflow_bitfield, /* complain_on_overflow */ | |
316 | bfd_elf_generic_reloc, /* special_function */ | |
317 | "R_CRIS_16_GOT", /* name */ | |
b34976b6 | 318 | FALSE, /* partial_inplace */ |
915e5146 HPN |
319 | 0, /* src_mask */ |
320 | 0xffff, /* dst_mask */ | |
b34976b6 | 321 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
322 | |
323 | HOWTO (R_CRIS_32_GOT, /* type */ | |
324 | 0, /* rightshift */ | |
325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
326 | 32, /* bitsize */ | |
b34976b6 | 327 | FALSE, /* pc_relative */ |
915e5146 HPN |
328 | 0, /* bitpos */ |
329 | complain_overflow_bitfield, /* complain_on_overflow */ | |
330 | bfd_elf_generic_reloc, /* special_function */ | |
331 | "R_CRIS_32_GOT", /* name */ | |
b34976b6 | 332 | FALSE, /* partial_inplace */ |
915e5146 HPN |
333 | 0, /* src_mask */ |
334 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 335 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
336 | |
337 | /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of | |
338 | the GOT table for the symbol. */ | |
339 | HOWTO (R_CRIS_16_GOTPLT, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
915e5146 HPN |
344 | 0, /* bitpos */ |
345 | complain_overflow_bitfield, /* complain_on_overflow */ | |
346 | bfd_elf_generic_reloc, /* special_function */ | |
347 | "R_CRIS_16_GOTPLT", /* name */ | |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
915e5146 HPN |
349 | 0, /* src_mask */ |
350 | 0xffff, /* dst_mask */ | |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
352 | |
353 | HOWTO (R_CRIS_32_GOTPLT, /* type */ | |
354 | 0, /* rightshift */ | |
355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 32, /* bitsize */ | |
b34976b6 | 357 | FALSE, /* pc_relative */ |
915e5146 HPN |
358 | 0, /* bitpos */ |
359 | complain_overflow_bitfield, /* complain_on_overflow */ | |
360 | bfd_elf_generic_reloc, /* special_function */ | |
361 | "R_CRIS_32_GOTPLT", /* name */ | |
b34976b6 | 362 | FALSE, /* partial_inplace */ |
915e5146 HPN |
363 | 0, /* src_mask */ |
364 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 365 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
366 | |
367 | /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should | |
368 | be necessary. */ | |
369 | HOWTO (R_CRIS_32_GOTREL, /* type */ | |
370 | 0, /* rightshift */ | |
371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 32, /* bitsize */ | |
b34976b6 | 373 | FALSE, /* pc_relative */ |
915e5146 HPN |
374 | 0, /* bitpos */ |
375 | complain_overflow_bitfield, /* complain_on_overflow */ | |
376 | bfd_elf_generic_reloc, /* special_function */ | |
377 | "R_CRIS_32_GOTREL", /* name */ | |
b34976b6 | 378 | FALSE, /* partial_inplace */ |
915e5146 HPN |
379 | 0, /* src_mask */ |
380 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 381 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
382 | |
383 | /* A 32-bit offset from GOT to entry for this symbol in PLT and request | |
384 | to create PLT entry for symbol. */ | |
385 | HOWTO (R_CRIS_32_PLT_GOTREL, /* type */ | |
386 | 0, /* rightshift */ | |
387 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
388 | 32, /* bitsize */ | |
b34976b6 | 389 | FALSE, /* pc_relative */ |
915e5146 HPN |
390 | 0, /* bitpos */ |
391 | complain_overflow_bitfield, /* complain_on_overflow */ | |
392 | bfd_elf_generic_reloc, /* special_function */ | |
393 | "R_CRIS_32_PLT_GOTREL", /* name */ | |
b34976b6 | 394 | FALSE, /* partial_inplace */ |
915e5146 HPN |
395 | 0, /* src_mask */ |
396 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 397 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
398 | |
399 | /* A 32-bit offset from PC (location after the relocation) + addend to | |
400 | entry for this symbol in PLT and request to create PLT entry for | |
401 | symbol. */ | |
402 | HOWTO (R_CRIS_32_PLT_PCREL, /* type */ | |
403 | 0, /* rightshift */ | |
404 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
405 | 32, /* bitsize */ | |
b34976b6 | 406 | TRUE, /* pc_relative */ |
915e5146 HPN |
407 | 0, /* bitpos */ |
408 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 409 | cris_elf_pcrel_reloc, /* special_function */ |
915e5146 | 410 | "R_CRIS_32_PLT_PCREL", /* name */ |
b34976b6 | 411 | FALSE, /* partial_inplace */ |
915e5146 HPN |
412 | 0, /* src_mask */ |
413 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 414 | TRUE) /* pcrel_offset */ |
06c15ad7 HPN |
415 | }; |
416 | \f | |
417 | /* Map BFD reloc types to CRIS ELF reloc types. */ | |
418 | ||
419 | struct cris_reloc_map | |
420 | { | |
421 | bfd_reloc_code_real_type bfd_reloc_val; | |
422 | unsigned int cris_reloc_val; | |
423 | }; | |
424 | ||
425 | static const struct cris_reloc_map cris_reloc_map [] = | |
426 | { | |
427 | { BFD_RELOC_NONE, R_CRIS_NONE }, | |
428 | { BFD_RELOC_8, R_CRIS_8 }, | |
429 | { BFD_RELOC_16, R_CRIS_16 }, | |
430 | { BFD_RELOC_32, R_CRIS_32 }, | |
431 | { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL }, | |
432 | { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL }, | |
433 | { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL }, | |
434 | { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT }, | |
915e5146 HPN |
435 | { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY }, |
436 | { BFD_RELOC_CRIS_COPY, R_CRIS_COPY }, | |
437 | { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT }, | |
438 | { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT }, | |
439 | { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE }, | |
440 | { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT }, | |
441 | { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT }, | |
442 | { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT }, | |
443 | { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT }, | |
444 | { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL }, | |
445 | { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL }, | |
446 | { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL } | |
06c15ad7 HPN |
447 | }; |
448 | ||
449 | static reloc_howto_type * | |
450 | cris_reloc_type_lookup (abfd, code) | |
451 | bfd * abfd ATTRIBUTE_UNUSED; | |
452 | bfd_reloc_code_real_type code; | |
453 | { | |
908d94bf | 454 | unsigned int i; |
06c15ad7 | 455 | |
908d94bf | 456 | for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++) |
06c15ad7 HPN |
457 | if (cris_reloc_map [i].bfd_reloc_val == code) |
458 | return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val]; | |
a7c10850 | 459 | |
06c15ad7 HPN |
460 | return NULL; |
461 | } | |
462 | ||
463 | /* Set the howto pointer for an CRIS ELF reloc. */ | |
464 | ||
465 | static void | |
466 | cris_info_to_howto_rela (abfd, cache_ptr, dst) | |
467 | bfd * abfd ATTRIBUTE_UNUSED; | |
468 | arelent * cache_ptr; | |
947216bf | 469 | Elf_Internal_Rela * dst; |
06c15ad7 HPN |
470 | { |
471 | unsigned int r_type; | |
472 | ||
473 | r_type = ELF32_R_TYPE (dst->r_info); | |
474 | BFD_ASSERT (r_type < (unsigned int) R_CRIS_max); | |
475 | cache_ptr->howto = & cris_elf_howto_table [r_type]; | |
476 | } | |
bac23f82 HPN |
477 | |
478 | bfd_reloc_status_type | |
479 | cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
480 | output_bfd, error_message) | |
481 | bfd *abfd ATTRIBUTE_UNUSED; | |
482 | arelent *reloc_entry; | |
483 | asymbol *symbol; | |
484 | PTR data ATTRIBUTE_UNUSED; | |
485 | asection *input_section; | |
486 | bfd *output_bfd; | |
487 | char **error_message ATTRIBUTE_UNUSED; | |
488 | { | |
489 | /* By default (using only bfd_elf_generic_reloc when linking to | |
490 | non-ELF formats) PC-relative relocs are relative to the beginning | |
491 | of the reloc. CRIS PC-relative relocs are relative to the position | |
492 | *after* the reloc because that's what pre-CRISv32 PC points to | |
493 | after reading an insn field with that reloc. (For CRISv32, PC is | |
494 | actually relative to the start of the insn, but we keep the old | |
495 | definition.) Still, we use as much generic machinery as we can. | |
496 | ||
497 | Only adjust when doing a final link. */ | |
498 | if (output_bfd == (bfd *) NULL) | |
499 | reloc_entry->addend -= 1 << reloc_entry->howto->size; | |
500 | ||
501 | return | |
502 | bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
503 | input_section, output_bfd, error_message); | |
504 | } | |
06c15ad7 | 505 | \f |
bac23f82 HPN |
506 | /* Support for core dump NOTE sections. |
507 | The slightly unintuitive code layout is an attempt to keep at least | |
508 | some similarities with other ports, hoping to simplify general | |
509 | changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */ | |
72209a1f | 510 | |
b34976b6 | 511 | static bfd_boolean |
72209a1f HPN |
512 | cris_elf_grok_prstatus (abfd, note) |
513 | bfd *abfd; | |
514 | Elf_Internal_Note *note; | |
515 | { | |
516 | int offset; | |
eea6121a | 517 | size_t size; |
72209a1f | 518 | |
bac23f82 HPN |
519 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
520 | switch (note->descsz) | |
521 | { | |
522 | default: | |
523 | return FALSE; | |
524 | ||
525 | case 202: /* Linux/CRISv32 */ | |
526 | /* pr_cursig */ | |
527 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
528 | ||
529 | /* pr_pid */ | |
530 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22); | |
531 | ||
532 | /* pr_reg */ | |
533 | offset = 70; | |
534 | size = 128; | |
535 | ||
536 | break; | |
537 | } | |
538 | else | |
539 | switch (note->descsz) | |
540 | { | |
72209a1f | 541 | default: |
b34976b6 | 542 | return FALSE; |
72209a1f | 543 | |
bc0d28ee | 544 | case 214: /* Linux/CRIS */ |
72209a1f HPN |
545 | /* pr_cursig */ |
546 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
547 | ||
548 | /* pr_pid */ | |
549 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22); | |
550 | ||
551 | /* pr_reg */ | |
552 | offset = 70; | |
eea6121a | 553 | size = 140; |
72209a1f HPN |
554 | |
555 | break; | |
bac23f82 | 556 | } |
72209a1f HPN |
557 | |
558 | /* Make a ".reg/999" section. */ | |
559 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 560 | size, note->descpos + offset); |
72209a1f HPN |
561 | } |
562 | ||
b34976b6 | 563 | static bfd_boolean |
72209a1f HPN |
564 | cris_elf_grok_psinfo (abfd, note) |
565 | bfd *abfd; | |
566 | Elf_Internal_Note *note; | |
567 | { | |
bac23f82 HPN |
568 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
569 | switch (note->descsz) | |
570 | { | |
571 | default: | |
572 | return FALSE; | |
573 | ||
574 | case 124: /* Linux/CRISv32 elf_prpsinfo */ | |
575 | elf_tdata (abfd)->core_program | |
576 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
577 | elf_tdata (abfd)->core_command | |
578 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
579 | } | |
580 | else | |
581 | switch (note->descsz) | |
582 | { | |
72209a1f | 583 | default: |
b34976b6 | 584 | return FALSE; |
72209a1f HPN |
585 | |
586 | case 124: /* Linux/CRIS elf_prpsinfo */ | |
587 | elf_tdata (abfd)->core_program | |
bac23f82 | 588 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
72209a1f | 589 | elf_tdata (abfd)->core_command |
bac23f82 HPN |
590 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
591 | } | |
72209a1f HPN |
592 | |
593 | /* Note that for some reason, a spurious space is tacked | |
594 | onto the end of the args in some (at least one anyway) | |
595 | implementations, so strip it off if it exists. */ | |
596 | ||
597 | { | |
598 | char *command = elf_tdata (abfd)->core_command; | |
599 | int n = strlen (command); | |
600 | ||
601 | if (0 < n && command[n - 1] == ' ') | |
602 | command[n - 1] = '\0'; | |
603 | } | |
604 | ||
b34976b6 | 605 | return TRUE; |
72209a1f HPN |
606 | } |
607 | \f | |
915e5146 HPN |
608 | /* The name of the dynamic interpreter. This is put in the .interp |
609 | section. */ | |
610 | ||
611 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
612 | ||
613 | /* The size in bytes of an entry in the procedure linkage table. */ | |
614 | ||
615 | #define PLT_ENTRY_SIZE 20 | |
bac23f82 | 616 | #define PLT_ENTRY_SIZE_V32 26 |
915e5146 HPN |
617 | |
618 | /* The first entry in an absolute procedure linkage table looks like this. */ | |
619 | ||
620 | static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] = | |
621 | { | |
622 | 0xfc, 0xe1, | |
cedb70c5 | 623 | 0x7e, 0x7e, /* push mof. */ |
915e5146 HPN |
624 | 0x7f, 0x0d, /* (dip [pc+]) */ |
625 | 0, 0, 0, 0, /* Replaced with address of .got + 4. */ | |
626 | 0x30, 0x7a, /* move [...],mof */ | |
627 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
628 | 0, 0, 0, 0, /* Replaced with address of .got + 8. */ | |
bac23f82 HPN |
629 | 0x30, 0x09 /* jump [...] */ |
630 | }; | |
631 | ||
632 | static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = | |
633 | { | |
634 | 0x84, 0xe2, /* subq 4,$sp */ | |
635 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
636 | 0, 0, 0, 0, /* Replaced by address of .got + 4. */ | |
637 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
638 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
639 | 0x04, 0xf2, /* addq 4,acr */ | |
640 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
641 | 0xbf, 0x09, /* jump $acr */ | |
642 | 0xb0, 0x05, /* nop */ | |
643 | 0, 0 /* Pad out to 26 bytes. */ | |
915e5146 HPN |
644 | }; |
645 | ||
646 | /* Subsequent entries in an absolute procedure linkage table look like | |
647 | this. */ | |
648 | ||
649 | static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] = | |
650 | { | |
651 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
652 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
653 | 0x30, 0x09, /* jump [...] */ | |
654 | 0x3f, 0x7e, /* move [pc+],mof */ | |
655 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
656 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
657 | 0xec, 0xff, | |
658 | 0xff, 0xff /* Replaced with offset to start of .plt. */ | |
659 | }; | |
660 | ||
bac23f82 HPN |
661 | static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] = |
662 | { | |
663 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
664 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
665 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
666 | 0xbf, 0x09, /* jump $acr */ | |
667 | 0xb0, 0x05, /* nop */ | |
668 | 0x3f, 0x7e, /* move 0,mof */ | |
669 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
670 | 0xbf, 0x0e, /* ba start_of_plt0_entry */ | |
671 | 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */ | |
672 | 0xb0, 0x05 /* nop */ | |
673 | }; | |
674 | ||
915e5146 HPN |
675 | /* The first entry in a PIC procedure linkage table looks like this. */ |
676 | ||
677 | static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
678 | { | |
679 | 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */ | |
680 | 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */ | |
681 | 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */ | |
682 | 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */ | |
683 | }; | |
684 | ||
bac23f82 HPN |
685 | static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = |
686 | { | |
687 | 0x84, 0xe2, /* subq 4,$sp */ | |
688 | 0x04, 0x01, /* addoq 4,$r0,$acr */ | |
689 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
690 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
691 | 0x04, 0xf2, /* addq 4,$acr */ | |
692 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
693 | 0xbf, 0x09, /* jump $acr */ | |
694 | 0xb0, 0x05, /* nop */ | |
695 | 0, 0, /* Pad out to 26 bytes. */ | |
696 | 0, 0, 0, 0, | |
697 | 0, 0, 0, 0 | |
698 | }; | |
699 | ||
915e5146 HPN |
700 | /* Subsequent entries in a PIC procedure linkage table look like this. */ |
701 | ||
702 | static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] = | |
703 | { | |
704 | 0x6f, 0x0d, /* (bdap [pc+].d,r0) */ | |
705 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
706 | 0x30, 0x09, /* jump [...] */ | |
707 | 0x3f, 0x7e, /* move [pc+],mof */ | |
708 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
709 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
710 | 0xec, 0xff, /* Replaced with offset to start of .plt. */ | |
711 | 0xff, 0xff | |
712 | }; | |
bac23f82 HPN |
713 | |
714 | static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] = | |
715 | { | |
716 | 0x6f, 0x0d, /* addo.d 0,$r0,$acr */ | |
717 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
718 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
719 | 0xbf, 0x09, /* jump $acr */ | |
720 | 0xb0, 0x05, /* nop */ | |
721 | 0x3f, 0x7e, /* move relocoffs,$mof */ | |
722 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
723 | 0xbf, 0x0e, /* ba start_of_plt */ | |
724 | 0, 0, 0, 0, /* Replaced with offset to start of .plt. */ | |
725 | 0xb0, 0x05 /* nop */ | |
726 | }; | |
915e5146 HPN |
727 | \f |
728 | /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits | |
729 | (and most other PIC/shlib stuff). Check that we don't drift away | |
730 | without reason. | |
731 | ||
732 | The CRIS linker, like the m68k and i386 linkers (and probably the rest | |
733 | too) needs to keep track of the number of relocs that it decides to | |
734 | copy in check_relocs for each symbol. This is so that it can discard | |
735 | PC relative relocs if it doesn't need them when linking with | |
736 | -Bsymbolic. We store the information in a field extending the regular | |
737 | ELF linker hash table. */ | |
738 | ||
739 | /* This structure keeps track of the number of PC relative relocs we have | |
740 | copied for a given symbol. */ | |
741 | ||
742 | struct elf_cris_pcrel_relocs_copied | |
743 | { | |
744 | /* Next section. */ | |
745 | struct elf_cris_pcrel_relocs_copied *next; | |
746 | /* A section in dynobj. */ | |
747 | asection *section; | |
748 | /* Number of relocs copied in this section. */ | |
749 | bfd_size_type count; | |
750 | }; | |
751 | ||
752 | /* CRIS ELF linker hash entry. */ | |
753 | ||
754 | struct elf_cris_link_hash_entry | |
755 | { | |
756 | struct elf_link_hash_entry root; | |
757 | ||
758 | /* Number of PC relative relocs copied for this symbol. */ | |
759 | struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied; | |
760 | ||
761 | /* The GOTPLT references are CRIS-specific; the goal is to avoid having | |
762 | both a general GOT and a PLT-specific GOT entry for the same symbol, | |
763 | when it is referenced both as a function and as a function pointer. | |
764 | ||
765 | Number of GOTPLT references for a function. */ | |
766 | bfd_signed_vma gotplt_refcount; | |
767 | ||
768 | /* Actual GOTPLT index for this symbol, if applicable, or zero if not | |
769 | (zero is never used as an index). FIXME: We should be able to fold | |
770 | this with gotplt_refcount in a union, like the got and plt unions in | |
771 | elf_link_hash_entry. */ | |
772 | bfd_size_type gotplt_offset; | |
773 | }; | |
774 | ||
775 | /* CRIS ELF linker hash table. */ | |
776 | ||
777 | struct elf_cris_link_hash_table | |
778 | { | |
779 | struct elf_link_hash_table root; | |
780 | ||
781 | /* We can't use the PLT offset and calculate to get the GOTPLT offset, | |
782 | since we try and avoid creating GOTPLT:s when there's already a GOT. | |
783 | Instead, we keep and update the next available index here. */ | |
784 | bfd_size_type next_gotplt_entry; | |
785 | }; | |
786 | ||
787 | /* Traverse a CRIS ELF linker hash table. */ | |
788 | ||
789 | #define elf_cris_link_hash_traverse(table, func, info) \ | |
790 | (elf_link_hash_traverse \ | |
791 | (&(table)->root, \ | |
b34976b6 | 792 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
915e5146 HPN |
793 | (info))) |
794 | ||
795 | /* Get the CRIS ELF linker hash table from a link_info structure. */ | |
796 | ||
797 | #define elf_cris_hash_table(p) \ | |
798 | ((struct elf_cris_link_hash_table *) (p)->hash) | |
799 | ||
800 | /* Create an entry in a CRIS ELF linker hash table. */ | |
801 | ||
802 | static struct bfd_hash_entry * | |
803 | elf_cris_link_hash_newfunc (entry, table, string) | |
804 | struct bfd_hash_entry *entry; | |
805 | struct bfd_hash_table *table; | |
806 | const char *string; | |
807 | { | |
808 | struct elf_cris_link_hash_entry *ret = | |
809 | (struct elf_cris_link_hash_entry *) entry; | |
810 | ||
811 | /* Allocate the structure if it has not already been allocated by a | |
812 | subclass. */ | |
813 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
814 | ret = ((struct elf_cris_link_hash_entry *) | |
815 | bfd_hash_allocate (table, | |
816 | sizeof (struct elf_cris_link_hash_entry))); | |
817 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
818 | return (struct bfd_hash_entry *) ret; | |
819 | ||
820 | /* Call the allocation method of the superclass. */ | |
821 | ret = ((struct elf_cris_link_hash_entry *) | |
822 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
823 | table, string)); | |
824 | if (ret != (struct elf_cris_link_hash_entry *) NULL) | |
825 | { | |
826 | ret->pcrel_relocs_copied = NULL; | |
827 | ret->gotplt_refcount = 0; | |
828 | ret->gotplt_offset = 0; | |
829 | } | |
830 | ||
831 | return (struct bfd_hash_entry *) ret; | |
832 | } | |
833 | ||
834 | /* Create a CRIS ELF linker hash table. */ | |
835 | ||
836 | static struct bfd_link_hash_table * | |
837 | elf_cris_link_hash_table_create (abfd) | |
838 | bfd *abfd; | |
839 | { | |
840 | struct elf_cris_link_hash_table *ret; | |
dc810e39 | 841 | bfd_size_type amt = sizeof (struct elf_cris_link_hash_table); |
915e5146 | 842 | |
e2d34d7d | 843 | ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt)); |
915e5146 HPN |
844 | if (ret == (struct elf_cris_link_hash_table *) NULL) |
845 | return NULL; | |
846 | ||
847 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
848 | elf_cris_link_hash_newfunc)) | |
849 | { | |
e2d34d7d | 850 | free (ret); |
915e5146 HPN |
851 | return NULL; |
852 | } | |
853 | ||
854 | /* Initialize to skip over the first three entries in the gotplt; they | |
855 | are used for run-time symbol evaluation. */ | |
856 | ret->next_gotplt_entry = 12; | |
857 | ||
858 | return &ret->root.root; | |
859 | } | |
860 | \f | |
06c15ad7 | 861 | /* Perform a single relocation. By default we use the standard BFD |
915e5146 | 862 | routines, with a few tweaks. */ |
06c15ad7 HPN |
863 | |
864 | static bfd_reloc_status_type | |
865 | cris_final_link_relocate (howto, input_bfd, input_section, contents, rel, | |
866 | relocation) | |
867 | reloc_howto_type * howto; | |
868 | bfd * input_bfd; | |
869 | asection * input_section; | |
870 | bfd_byte * contents; | |
871 | Elf_Internal_Rela * rel; | |
872 | bfd_vma relocation; | |
873 | { | |
915e5146 HPN |
874 | bfd_reloc_status_type r; |
875 | ||
876 | /* PC-relative relocations are relative to the position *after* | |
877 | the reloc. Note that for R_CRIS_8_PCREL the adjustment is | |
878 | not a single byte, since PC must be 16-bit-aligned. */ | |
879 | switch (ELF32_R_TYPE (rel->r_info)) | |
880 | { | |
881 | /* Check that the 16-bit GOT relocs are positive. */ | |
882 | case R_CRIS_16_GOTPLT: | |
883 | case R_CRIS_16_GOT: | |
884 | if ((bfd_signed_vma) relocation < 0) | |
885 | return bfd_reloc_overflow; | |
886 | break; | |
887 | ||
888 | case R_CRIS_32_PLT_PCREL: | |
889 | case R_CRIS_32_PCREL: | |
890 | relocation -= 2; | |
891 | /* Fall through. */ | |
892 | case R_CRIS_8_PCREL: | |
893 | case R_CRIS_16_PCREL: | |
894 | relocation -= 2; | |
895 | break; | |
896 | ||
897 | default: | |
898 | break; | |
899 | } | |
900 | ||
901 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
06c15ad7 HPN |
902 | contents, rel->r_offset, |
903 | relocation, rel->r_addend); | |
904 | return r; | |
905 | } | |
906 | \f | |
907 | /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was | |
908 | copied, for further comments. */ | |
909 | ||
b34976b6 | 910 | static bfd_boolean |
06c15ad7 HPN |
911 | cris_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
912 | contents, relocs, local_syms, local_sections) | |
b34976b6 AM |
913 | bfd *output_bfd ATTRIBUTE_UNUSED; |
914 | struct bfd_link_info *info; | |
915 | bfd *input_bfd; | |
916 | asection *input_section; | |
917 | bfd_byte *contents; | |
918 | Elf_Internal_Rela *relocs; | |
919 | Elf_Internal_Sym *local_syms; | |
920 | asection **local_sections; | |
06c15ad7 | 921 | { |
915e5146 | 922 | bfd *dynobj; |
b34976b6 AM |
923 | Elf_Internal_Shdr *symtab_hdr; |
924 | struct elf_link_hash_entry **sym_hashes; | |
915e5146 HPN |
925 | bfd_vma *local_got_offsets; |
926 | asection *sgot; | |
927 | asection *splt; | |
928 | asection *sreloc; | |
b34976b6 AM |
929 | Elf_Internal_Rela *rel; |
930 | Elf_Internal_Rela *relend; | |
06c15ad7 | 931 | |
1049f94e | 932 | if (info->relocatable) |
b34976b6 | 933 | return TRUE; |
f0fe0e16 | 934 | |
915e5146 HPN |
935 | dynobj = elf_hash_table (info)->dynobj; |
936 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
06c15ad7 HPN |
937 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
938 | sym_hashes = elf_sym_hashes (input_bfd); | |
939 | relend = relocs + input_section->reloc_count; | |
940 | ||
915e5146 HPN |
941 | sgot = NULL; |
942 | splt = NULL; | |
943 | sreloc = NULL; | |
944 | ||
945 | if (dynobj != NULL) | |
946 | { | |
947 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
948 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
949 | } | |
950 | ||
06c15ad7 HPN |
951 | for (rel = relocs; rel < relend; rel ++) |
952 | { | |
b34976b6 AM |
953 | reloc_howto_type *howto; |
954 | unsigned long r_symndx; | |
955 | Elf_Internal_Sym *sym; | |
956 | asection *sec; | |
957 | struct elf_link_hash_entry *h; | |
958 | bfd_vma relocation; | |
959 | bfd_reloc_status_type r; | |
960 | const char *symname = NULL; | |
961 | int r_type; | |
a7c10850 | 962 | |
06c15ad7 | 963 | r_type = ELF32_R_TYPE (rel->r_info); |
a7c10850 | 964 | |
06c15ad7 HPN |
965 | if ( r_type == R_CRIS_GNU_VTINHERIT |
966 | || r_type == R_CRIS_GNU_VTENTRY) | |
967 | continue; | |
a7c10850 | 968 | |
06c15ad7 | 969 | /* This is a final link. */ |
f0fe0e16 | 970 | r_symndx = ELF32_R_SYM (rel->r_info); |
915e5146 | 971 | howto = cris_elf_howto_table + r_type; |
06c15ad7 HPN |
972 | h = NULL; |
973 | sym = NULL; | |
974 | sec = NULL; | |
a7c10850 | 975 | |
06c15ad7 HPN |
976 | if (r_symndx < symtab_hdr->sh_info) |
977 | { | |
978 | sym = local_syms + r_symndx; | |
979 | sec = local_sections [r_symndx]; | |
8517fae7 | 980 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
a7c10850 | 981 | |
dc810e39 AM |
982 | symname = (bfd_elf_string_from_elf_section |
983 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
984 | if (symname == NULL) | |
985 | symname = bfd_section_name (input_bfd, sec); | |
06c15ad7 HPN |
986 | } |
987 | else | |
988 | { | |
560e09e9 NC |
989 | bfd_boolean warned; |
990 | bfd_boolean unresolved_reloc; | |
0a4787a0 | 991 | |
b2a8e766 AM |
992 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
993 | r_symndx, symtab_hdr, sym_hashes, | |
994 | h, sec, relocation, | |
995 | unresolved_reloc, warned); | |
915e5146 | 996 | |
560e09e9 | 997 | if (unresolved_reloc |
915e5146 HPN |
998 | /* Perhaps we should detect the cases that |
999 | sec->output_section is expected to be NULL like i386 and | |
1000 | m68k, but apparently (and according to elfxx-ia64.c) all | |
1001 | valid cases are where the symbol is defined in a shared | |
1002 | object which we link dynamically against. This includes | |
1003 | PLT relocs for which we've created a PLT entry and other | |
1004 | relocs for which we're prepared to create dynamic | |
1005 | relocations. | |
1006 | ||
1007 | For now, new situations cause us to just err when | |
1008 | sec->output_offset is NULL but the object with the symbol | |
1009 | is *not* dynamically linked against. Thus this will | |
1010 | automatically remind us so we can see if there are other | |
1011 | valid cases we need to revisit. */ | |
560e09e9 NC |
1012 | && (sec->owner->flags & DYNAMIC) != 0) |
1013 | relocation = 0; | |
1014 | ||
1015 | else if (h->root.type == bfd_link_hash_defined | |
1016 | || h->root.type == bfd_link_hash_defweak) | |
1017 | { | |
1018 | /* Here follow the cases where the relocation value must | |
1019 | be zero (or when further handling is simplified when | |
1020 | zero). I can't claim to understand the various | |
1021 | conditions and they weren't described in the files | |
1022 | where I copied them from (elf32-m68k.c and | |
1023 | elf32-i386.c), but let's mention examples of where | |
1024 | they happen. FIXME: Perhaps define and use a | |
1025 | dynamic_symbol_p function like ia64. | |
1026 | ||
1027 | - When creating a shared library, we can have an | |
1028 | ordinary relocation for a symbol defined in a shared | |
1029 | library (perhaps the one we create). We then make | |
1030 | the relocation value zero, as the value seen now will | |
1031 | be added into the relocation addend in this shared | |
1032 | library, but must be handled only at dynamic-link | |
1033 | time. FIXME: Not sure this example covers the | |
1034 | h->elf_link_hash_flags test, though it's there in | |
1035 | other targets. */ | |
1036 | if (info->shared | |
1037 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1038 | || !h->def_regular) |
560e09e9 NC |
1039 | && (input_section->flags & SEC_ALLOC) != 0 |
1040 | && (r_type == R_CRIS_8 | |
1041 | || r_type == R_CRIS_16 | |
1042 | || r_type == R_CRIS_32 | |
1043 | || r_type == R_CRIS_8_PCREL | |
1044 | || r_type == R_CRIS_16_PCREL | |
1045 | || r_type == R_CRIS_32_PCREL)) | |
915e5146 | 1046 | relocation = 0; |
560e09e9 | 1047 | else if (unresolved_reloc) |
915e5146 | 1048 | { |
560e09e9 | 1049 | _bfd_error_handler |
bac23f82 | 1050 | (_("%B, section %A: unresolvable relocation %s against symbol `%s'"), |
d003868e AM |
1051 | input_bfd, |
1052 | input_section, | |
8f615d07 | 1053 | cris_elf_howto_table[r_type].name, |
d003868e | 1054 | symname); |
915e5146 | 1055 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1056 | return FALSE; |
915e5146 | 1057 | } |
06c15ad7 | 1058 | } |
06c15ad7 | 1059 | } |
a7c10850 | 1060 | |
915e5146 | 1061 | switch (r_type) |
06c15ad7 | 1062 | { |
915e5146 HPN |
1063 | case R_CRIS_16_GOTPLT: |
1064 | case R_CRIS_32_GOTPLT: | |
1065 | /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT, | |
1066 | but we require a PLT, and the PLT handling will take care of | |
1067 | filling in the PLT-specific GOT entry. For the GOT offset, | |
1068 | calculate it as we do when filling it in for the .got.plt | |
1069 | section. If we don't have a PLT, punt to GOT handling. */ | |
1070 | if (h != NULL | |
1071 | && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0) | |
06c15ad7 | 1072 | { |
915e5146 HPN |
1073 | asection *sgotplt |
1074 | = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1075 | bfd_vma got_offset; | |
a7c10850 | 1076 | |
915e5146 HPN |
1077 | BFD_ASSERT (h->dynindx != -1); |
1078 | BFD_ASSERT (sgotplt != NULL); | |
a7c10850 | 1079 | |
915e5146 HPN |
1080 | got_offset |
1081 | = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; | |
06c15ad7 | 1082 | |
915e5146 | 1083 | relocation = got_offset; |
06c15ad7 | 1084 | break; |
915e5146 | 1085 | } |
06c15ad7 | 1086 | |
4d96d128 | 1087 | /* We didn't make a PLT entry for this symbol. Maybe everything is |
915e5146 HPN |
1088 | folded into the GOT. Other than folding, this happens when |
1089 | statically linking PIC code, or when using -Bsymbolic. Check | |
1090 | that we instead have a GOT entry as done for us by | |
1091 | elf_cris_adjust_dynamic_symbol, and drop through into the | |
e4a2175c HPN |
1092 | ordinary GOT cases. This must not happen for the |
1093 | executable, because any reference it does to a function | |
1094 | that is satisfied by a DSO must generate a PLT. We assume | |
1095 | these call-specific relocs don't address non-functions. */ | |
1096 | if (h != NULL | |
1097 | && (h->got.offset == (bfd_vma) -1 | |
1098 | || (!info->shared | |
f5385ebf AM |
1099 | && !(h->def_regular |
1100 | || (!h->def_dynamic | |
1101 | && h->root.type == bfd_link_hash_undefweak))))) | |
915e5146 HPN |
1102 | { |
1103 | (*_bfd_error_handler) | |
e4a2175c | 1104 | ((h->got.offset == (bfd_vma) -1) |
bac23f82 | 1105 | ? _("%B, section %A: No PLT nor GOT for relocation %s" |
d003868e | 1106 | " against symbol `%s'") |
bac23f82 | 1107 | : _("%B, section %A: No PLT for relocation %s" |
d003868e AM |
1108 | " against symbol `%s'"), |
1109 | input_bfd, | |
1110 | input_section, | |
915e5146 | 1111 | cris_elf_howto_table[r_type].name, |
ada1953e HPN |
1112 | (symname != NULL && symname[0] != '\0' |
1113 | ? symname : _("[whose name is lost]"))); | |
915e5146 HPN |
1114 | |
1115 | /* FIXME: Perhaps blaming input is not the right thing to | |
1116 | do; this is probably an internal error. But it is true | |
1117 | that we didn't like that particular input. */ | |
1118 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1119 | return FALSE; |
915e5146 HPN |
1120 | } |
1121 | /* Fall through. */ | |
1122 | ||
1123 | /* The size of the actual relocation is not used here; we only | |
1124 | fill in the GOT table here. */ | |
1125 | case R_CRIS_16_GOT: | |
1126 | case R_CRIS_32_GOT: | |
1127 | { | |
1128 | bfd_vma off; | |
1129 | ||
1130 | /* Note that despite using RELA relocations, the .got contents | |
1131 | is always filled in with the link-relative relocation | |
1132 | value; the addend. */ | |
1133 | ||
1134 | if (h != NULL) | |
1135 | { | |
1136 | off = h->got.offset; | |
1137 | BFD_ASSERT (off != (bfd_vma) -1); | |
1138 | ||
1139 | if (!elf_hash_table (info)->dynamic_sections_created | |
205cfeb0 | 1140 | || (! info->shared |
f5385ebf | 1141 | && (h->def_regular |
e4a2175c | 1142 | || h->type == STT_FUNC |
f5385ebf | 1143 | || h->needs_plt)) |
915e5146 HPN |
1144 | || (info->shared |
1145 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 1146 | && h->def_regular)) |
915e5146 | 1147 | { |
4d96d128 | 1148 | /* This wasn't checked above for ! info->shared, but |
e4a2175c HPN |
1149 | must hold there if we get here; the symbol must |
1150 | be defined in the regular program or be undefweak | |
1151 | or be a function or otherwise need a PLT. */ | |
6849c52f HPN |
1152 | BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created |
1153 | || info->shared | |
f5385ebf | 1154 | || h->def_regular |
e4a2175c | 1155 | || h->type == STT_FUNC |
f5385ebf | 1156 | || h->needs_plt |
6849c52f | 1157 | || h->root.type == bfd_link_hash_undefweak); |
4d96d128 | 1158 | |
915e5146 | 1159 | /* This is actually a static link, or it is a |
6849c52f HPN |
1160 | -Bsymbolic link and the symbol is defined locally, |
1161 | or is undefweak, or the symbol was forced to be | |
1162 | local because of a version file, or we're not | |
1163 | creating a dynamic object. We must initialize this | |
1164 | entry in the global offset table. Since the offset | |
1165 | must always be a multiple of 4, we use the least | |
1166 | significant bit to record whether we have | |
1167 | initialized it already. | |
1168 | ||
1169 | If this GOT entry should be runtime-initialized, we | |
1170 | will create a .rela.got relocation entry to | |
1171 | initialize the value. This is done in the | |
1172 | finish_dynamic_symbol routine. */ | |
915e5146 HPN |
1173 | if ((off & 1) != 0) |
1174 | off &= ~1; | |
1175 | else | |
1176 | { | |
1177 | bfd_put_32 (output_bfd, relocation, | |
1178 | sgot->contents + off); | |
1179 | h->got.offset |= 1; | |
1180 | } | |
1181 | } | |
1182 | } | |
1183 | else | |
1184 | { | |
1185 | BFD_ASSERT (local_got_offsets != NULL | |
1186 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1187 | ||
1188 | off = local_got_offsets[r_symndx]; | |
1189 | ||
1190 | /* The offset must always be a multiple of 4. We use | |
1191 | the least significant bit to record whether we have | |
1192 | already generated the necessary reloc. */ | |
1193 | if ((off & 1) != 0) | |
1194 | off &= ~1; | |
1195 | else | |
1196 | { | |
1197 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1198 | ||
1199 | if (info->shared) | |
1200 | { | |
947216bf | 1201 | asection *s; |
915e5146 | 1202 | Elf_Internal_Rela outrel; |
947216bf | 1203 | bfd_byte *loc; |
915e5146 | 1204 | |
947216bf AM |
1205 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1206 | BFD_ASSERT (s != NULL); | |
915e5146 HPN |
1207 | |
1208 | outrel.r_offset = (sgot->output_section->vma | |
1209 | + sgot->output_offset | |
1210 | + off); | |
1211 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
1212 | outrel.r_addend = relocation; | |
947216bf AM |
1213 | loc = s->contents; |
1214 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1215 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
915e5146 HPN |
1216 | } |
1217 | ||
1218 | local_got_offsets[r_symndx] |= 1; | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | relocation = sgot->output_offset + off; | |
1223 | if (rel->r_addend != 0) | |
1224 | { | |
1225 | /* We can't do anything for a relocation which is against | |
1226 | a symbol *plus offset*. GOT holds relocations for | |
1227 | symbols. Make this an error; the compiler isn't | |
1228 | allowed to pass us these kinds of things. */ | |
1229 | if (h == NULL) | |
1230 | (*_bfd_error_handler) | |
bac23f82 | 1231 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1232 | " against local symbol"), |
1233 | input_bfd, | |
1234 | input_section, | |
915e5146 | 1235 | cris_elf_howto_table[r_type].name, |
d003868e | 1236 | rel->r_addend); |
915e5146 HPN |
1237 | else |
1238 | (*_bfd_error_handler) | |
bac23f82 | 1239 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1240 | " against symbol `%s'"), |
1241 | input_bfd, | |
1242 | input_section, | |
915e5146 HPN |
1243 | cris_elf_howto_table[r_type].name, |
1244 | rel->r_addend, | |
d003868e | 1245 | symname[0] != '\0' ? symname : _("[whose name is lost]")); |
915e5146 HPN |
1246 | |
1247 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1248 | return FALSE; |
915e5146 HPN |
1249 | } |
1250 | } | |
1251 | break; | |
06c15ad7 | 1252 | |
915e5146 | 1253 | case R_CRIS_32_GOTREL: |
3dab95d3 HPN |
1254 | /* This relocation must only be performed against local symbols. |
1255 | It's also ok when we link a program and the symbol is either | |
1256 | defined in an ordinary (non-DSO) object or is undefined weak. */ | |
1257 | if (h != NULL | |
1258 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1259 | && !(!info->shared | |
f5385ebf AM |
1260 | && (h->def_regular |
1261 | || (!h->def_dynamic | |
3dab95d3 | 1262 | && h->root.type == bfd_link_hash_undefweak)))) |
915e5146 HPN |
1263 | { |
1264 | (*_bfd_error_handler) | |
bac23f82 HPN |
1265 | (_("%B, section %A: relocation %s is" |
1266 | " not allowed for global symbol: `%s'"), | |
d003868e AM |
1267 | input_bfd, |
1268 | input_section, | |
915e5146 | 1269 | cris_elf_howto_table[r_type].name, |
d003868e | 1270 | symname); |
915e5146 | 1271 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1272 | return FALSE; |
06c15ad7 HPN |
1273 | } |
1274 | ||
58255df3 HPN |
1275 | /* This can happen if we get a link error with the input ELF |
1276 | variant mismatching the output variant. Emit an error so | |
1277 | it's noticed if it happens elsewhere. */ | |
1278 | if (sgot == NULL) | |
1279 | { | |
1280 | (*_bfd_error_handler) | |
bac23f82 | 1281 | (_("%B, section %A: relocation %s with no GOT created"), |
d003868e AM |
1282 | input_bfd, |
1283 | input_section, | |
1284 | cris_elf_howto_table[r_type].name); | |
58255df3 | 1285 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1286 | return FALSE; |
58255df3 HPN |
1287 | } |
1288 | ||
915e5146 HPN |
1289 | /* This relocation is like a PC-relative one, except the |
1290 | reference point is the location of GOT. Note that | |
1291 | sgot->output_offset is not involved in this calculation. We | |
1292 | always want the start of entire .got section, not the | |
1293 | position after the reserved header. */ | |
1294 | relocation -= sgot->output_section->vma; | |
1295 | break; | |
06c15ad7 | 1296 | |
915e5146 HPN |
1297 | case R_CRIS_32_PLT_PCREL: |
1298 | /* Relocation is to the entry for this symbol in the | |
1299 | procedure linkage table. */ | |
06c15ad7 | 1300 | |
915e5146 HPN |
1301 | /* Resolve a PLT_PCREL reloc against a local symbol directly, |
1302 | without using the procedure linkage table. */ | |
0a4787a0 | 1303 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1304 | break; |
1305 | ||
1306 | if (h->plt.offset == (bfd_vma) -1 | |
1307 | || splt == NULL) | |
1308 | { | |
1309 | /* We didn't make a PLT entry for this symbol. This | |
1310 | happens when statically linking PIC code, or when | |
1311 | using -Bsymbolic. */ | |
1312 | break; | |
1313 | } | |
1314 | ||
1315 | relocation = (splt->output_section->vma | |
1316 | + splt->output_offset | |
1317 | + h->plt.offset); | |
1318 | break; | |
1319 | ||
1320 | case R_CRIS_32_PLT_GOTREL: | |
1321 | /* Like R_CRIS_32_PLT_PCREL, but the reference point is the | |
1322 | start of the .got section. See also comment at | |
1323 | R_CRIS_32_GOT. */ | |
1324 | relocation -= sgot->output_section->vma; | |
1325 | ||
1326 | /* Resolve a PLT_GOTREL reloc against a local symbol directly, | |
1327 | without using the procedure linkage table. */ | |
0a4787a0 | 1328 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1329 | break; |
1330 | ||
1331 | if (h->plt.offset == (bfd_vma) -1 | |
1332 | || splt == NULL) | |
1333 | { | |
1334 | /* We didn't make a PLT entry for this symbol. This | |
1335 | happens when statically linking PIC code, or when | |
1336 | using -Bsymbolic. */ | |
1337 | break; | |
1338 | } | |
1339 | ||
1340 | relocation = (splt->output_section->vma | |
1341 | + splt->output_offset | |
1342 | + h->plt.offset | |
1343 | - sgot->output_section->vma); | |
1344 | break; | |
1345 | ||
1346 | case R_CRIS_8_PCREL: | |
1347 | case R_CRIS_16_PCREL: | |
1348 | case R_CRIS_32_PCREL: | |
1349 | /* If the symbol was local, we need no shlib-specific handling. */ | |
0a4787a0 | 1350 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1351 | break; |
1352 | ||
1353 | /* Fall through. */ | |
1354 | case R_CRIS_8: | |
1355 | case R_CRIS_16: | |
1356 | case R_CRIS_32: | |
1357 | if (info->shared | |
ec338859 | 1358 | && r_symndx != 0 |
915e5146 HPN |
1359 | && (input_section->flags & SEC_ALLOC) != 0 |
1360 | && ((r_type != R_CRIS_8_PCREL | |
1361 | && r_type != R_CRIS_16_PCREL | |
1362 | && r_type != R_CRIS_32_PCREL) | |
1363 | || (!info->symbolic | |
f5385ebf | 1364 | || !h->def_regular))) |
915e5146 HPN |
1365 | { |
1366 | Elf_Internal_Rela outrel; | |
947216bf | 1367 | bfd_byte *loc; |
b34976b6 | 1368 | bfd_boolean skip, relocate; |
915e5146 HPN |
1369 | |
1370 | /* When generating a shared object, these relocations | |
1371 | are copied into the output file to be resolved at run | |
1372 | time. */ | |
1373 | ||
1374 | if (sreloc == NULL) | |
1375 | { | |
1376 | const char *name; | |
1377 | ||
1378 | name = (bfd_elf_string_from_elf_section | |
1379 | (input_bfd, | |
1380 | elf_elfheader (input_bfd)->e_shstrndx, | |
1381 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1382 | if (name == NULL) | |
b34976b6 | 1383 | return FALSE; |
915e5146 HPN |
1384 | |
1385 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1386 | && strcmp (bfd_get_section_name (input_bfd, | |
1387 | input_section), | |
1388 | name + 5) == 0); | |
1389 | ||
1390 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1391 | ||
1392 | /* That section should have been created in | |
1393 | cris_elf_check_relocs, but that function will not be | |
1394 | called for objects which fail in | |
1395 | cris_elf_merge_private_bfd_data. */ | |
1396 | if (sreloc == NULL) | |
1397 | { | |
1398 | (*_bfd_error_handler) | |
d003868e AM |
1399 | (_("%B: Internal inconsistency; no relocation section %s"), |
1400 | input_bfd, | |
915e5146 HPN |
1401 | name); |
1402 | ||
1403 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1404 | return FALSE; |
915e5146 HPN |
1405 | } |
1406 | } | |
1407 | ||
b34976b6 AM |
1408 | skip = FALSE; |
1409 | relocate = FALSE; | |
915e5146 | 1410 | |
c629eae0 JJ |
1411 | outrel.r_offset = |
1412 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1413 | rel->r_offset); | |
1414 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1415 | skip = TRUE; |
0bb2d96a | 1416 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1417 | skip = TRUE, relocate = TRUE; |
915e5146 HPN |
1418 | outrel.r_offset += (input_section->output_section->vma |
1419 | + input_section->output_offset); | |
1420 | ||
1421 | if (skip) | |
0bb2d96a | 1422 | memset (&outrel, 0, sizeof outrel); |
915e5146 HPN |
1423 | /* h->dynindx may be -1 if the symbol was marked to |
1424 | become local. */ | |
1425 | else if (h != NULL | |
1426 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1427 | || !h->def_regular)) |
915e5146 HPN |
1428 | { |
1429 | BFD_ASSERT (h->dynindx != -1); | |
915e5146 HPN |
1430 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1431 | outrel.r_addend = relocation + rel->r_addend; | |
1432 | } | |
1433 | else | |
1434 | { | |
1435 | if (r_type == R_CRIS_32) | |
1436 | { | |
b34976b6 | 1437 | relocate = TRUE; |
915e5146 HPN |
1438 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); |
1439 | outrel.r_addend = relocation + rel->r_addend; | |
1440 | } | |
1441 | else | |
1442 | { | |
1443 | long indx; | |
1444 | ||
8517fae7 | 1445 | if (bfd_is_abs_section (sec)) |
915e5146 HPN |
1446 | indx = 0; |
1447 | else if (sec == NULL || sec->owner == NULL) | |
1448 | { | |
1449 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1450 | return FALSE; |
915e5146 HPN |
1451 | } |
1452 | else | |
1453 | { | |
1454 | asection *osec; | |
1455 | ||
1456 | osec = sec->output_section; | |
1457 | indx = elf_section_data (osec)->dynindx; | |
1458 | BFD_ASSERT (indx > 0); | |
1459 | } | |
1460 | ||
915e5146 HPN |
1461 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
1462 | outrel.r_addend = relocation + rel->r_addend; | |
1463 | } | |
1464 | } | |
1465 | ||
947216bf AM |
1466 | loc = sreloc->contents; |
1467 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1468 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
915e5146 HPN |
1469 | |
1470 | /* This reloc will be computed at runtime, so there's no | |
1471 | need to do anything now, except for R_CRIS_32 relocations | |
1472 | that have been turned into R_CRIS_RELATIVE. */ | |
1473 | if (!relocate) | |
1474 | continue; | |
1475 | } | |
1476 | ||
1477 | break; | |
1478 | } | |
1479 | ||
1480 | r = cris_final_link_relocate (howto, input_bfd, input_section, | |
1481 | contents, rel, relocation); | |
1482 | ||
1483 | if (r != bfd_reloc_ok) | |
1484 | { | |
1485 | const char * msg = (const char *) NULL; | |
1486 | ||
1487 | switch (r) | |
1488 | { | |
1489 | case bfd_reloc_overflow: | |
1490 | r = info->callbacks->reloc_overflow | |
dfeffb9f L |
1491 | (info, (h ? &h->root : NULL), symname, howto->name, |
1492 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
915e5146 HPN |
1493 | break; |
1494 | ||
1495 | case bfd_reloc_undefined: | |
1496 | r = info->callbacks->undefined_symbol | |
dc810e39 | 1497 | (info, symname, input_bfd, input_section, rel->r_offset, |
b34976b6 | 1498 | TRUE); |
915e5146 HPN |
1499 | break; |
1500 | ||
1501 | case bfd_reloc_outofrange: | |
1502 | msg = _("internal error: out of range error"); | |
1503 | break; | |
1504 | ||
1505 | case bfd_reloc_notsupported: | |
1506 | msg = _("internal error: unsupported relocation error"); | |
1507 | break; | |
1508 | ||
1509 | case bfd_reloc_dangerous: | |
1510 | msg = _("internal error: dangerous relocation"); | |
1511 | break; | |
1512 | ||
1513 | default: | |
1514 | msg = _("internal error: unknown error"); | |
1515 | break; | |
1516 | } | |
1517 | ||
1518 | if (msg) | |
1519 | r = info->callbacks->warning | |
dc810e39 | 1520 | (info, msg, symname, input_bfd, input_section, rel->r_offset); |
915e5146 HPN |
1521 | |
1522 | if (! r) | |
b34976b6 | 1523 | return FALSE; |
915e5146 HPN |
1524 | } |
1525 | } | |
1526 | ||
b34976b6 | 1527 | return TRUE; |
915e5146 HPN |
1528 | } |
1529 | \f | |
1530 | /* Finish up dynamic symbol handling. We set the contents of various | |
1531 | dynamic sections here. */ | |
1532 | ||
b34976b6 | 1533 | static bfd_boolean |
915e5146 HPN |
1534 | elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym) |
1535 | bfd *output_bfd; | |
1536 | struct bfd_link_info *info; | |
1537 | struct elf_link_hash_entry *h; | |
1538 | Elf_Internal_Sym *sym; | |
1539 | { | |
1540 | bfd *dynobj; | |
bac23f82 HPN |
1541 | |
1542 | /* Where in the plt entry to put values. */ | |
915e5146 HPN |
1543 | int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16; |
1544 | ||
bac23f82 HPN |
1545 | /* What offset to add to the distance to the first PLT entry for the |
1546 | value at plt_off3. */ | |
1547 | int plt_off3_value_bias = 4; | |
1548 | ||
1549 | /* Where in the PLT entry the call-dynlink-stub is (happens to be same | |
1550 | for PIC and non-PIC for v32 and pre-v32). */ | |
1551 | int plt_stub_offset = 8; | |
1552 | int plt_entry_size = PLT_ENTRY_SIZE; | |
1553 | const bfd_byte *plt_entry = elf_cris_plt_entry; | |
1554 | const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry; | |
1555 | ||
1556 | /* Adjust the various PLT entry offsets. */ | |
1557 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) | |
1558 | { | |
1559 | plt_off2 = 14; | |
1560 | plt_off3 = 20; | |
1561 | plt_off3_value_bias = -2; | |
1562 | plt_stub_offset = 12; | |
1563 | plt_entry_size = PLT_ENTRY_SIZE_V32; | |
1564 | plt_entry = elf_cris_plt_entry_v32; | |
1565 | plt_pic_entry = elf_cris_pic_plt_entry_v32; | |
1566 | } | |
1567 | ||
915e5146 HPN |
1568 | dynobj = elf_hash_table (info)->dynobj; |
1569 | ||
1570 | if (h->plt.offset != (bfd_vma) -1) | |
1571 | { | |
1572 | asection *splt; | |
1573 | asection *sgotplt; | |
1574 | asection *sgot; | |
1575 | asection *srela; | |
1576 | bfd_vma got_base; | |
1577 | ||
1578 | bfd_vma gotplt_offset | |
1579 | = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; | |
1580 | Elf_Internal_Rela rela; | |
947216bf | 1581 | bfd_byte *loc; |
b34976b6 | 1582 | bfd_boolean has_gotplt = gotplt_offset != 0; |
915e5146 HPN |
1583 | |
1584 | /* Get the index in the procedure linkage table which | |
1585 | corresponds to this symbol. This is the index of this symbol | |
1586 | in all the symbols for which we are making plt entries. The | |
1587 | first entry in the procedure linkage table is reserved. */ | |
1588 | /* We have to count backwards here, and the result is only valid as | |
1589 | an index into .got.plt and its relocations. FIXME: Constants... */ | |
1590 | bfd_vma gotplt_index = gotplt_offset/4 - 3; | |
1591 | ||
1592 | /* Get the offset into the .got table of the entry that corresponds | |
1593 | to this function. Note that we embed knowledge that "incoming" | |
1594 | .got goes after .got.plt in the output without padding (pointer | |
1595 | aligned). However, that knowledge is present in several other | |
c152c796 | 1596 | places too. */ |
915e5146 HPN |
1597 | bfd_vma got_offset |
1598 | = (has_gotplt | |
1599 | ? gotplt_offset | |
1600 | : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry); | |
1601 | ||
1602 | /* This symbol has an entry in the procedure linkage table. Set it | |
1603 | up. */ | |
1604 | ||
1605 | BFD_ASSERT (h->dynindx != -1); | |
1606 | ||
1607 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1608 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1609 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1610 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1611 | BFD_ASSERT (splt != NULL && sgotplt != NULL | |
1612 | && (! has_gotplt || srela != NULL)); | |
1613 | ||
1614 | got_base = sgotplt->output_section->vma + sgotplt->output_offset; | |
1615 | ||
1616 | /* Fill in the entry in the procedure linkage table. */ | |
1617 | if (! info->shared) | |
1618 | { | |
bac23f82 HPN |
1619 | memcpy (splt->contents + h->plt.offset, plt_entry, |
1620 | plt_entry_size); | |
915e5146 HPN |
1621 | |
1622 | /* We need to enter the absolute address of the GOT entry here. */ | |
1623 | bfd_put_32 (output_bfd, got_base + got_offset, | |
1624 | splt->contents + h->plt.offset + plt_off1); | |
1625 | } | |
1626 | else | |
1627 | { | |
bac23f82 HPN |
1628 | memcpy (splt->contents + h->plt.offset, plt_pic_entry, |
1629 | plt_entry_size); | |
915e5146 HPN |
1630 | bfd_put_32 (output_bfd, got_offset, |
1631 | splt->contents + h->plt.offset + plt_off1); | |
1632 | } | |
1633 | ||
1634 | /* Fill in the plt entry and make a relocation, if this is a "real" | |
1635 | PLT entry. */ | |
1636 | if (has_gotplt) | |
1637 | { | |
bac23f82 | 1638 | /* Fill in the offset to the reloc table. */ |
915e5146 HPN |
1639 | bfd_put_32 (output_bfd, |
1640 | gotplt_index * sizeof (Elf32_External_Rela), | |
1641 | splt->contents + h->plt.offset + plt_off2); | |
1642 | ||
1643 | /* Fill in the offset to the first PLT entry, where to "jump". */ | |
bac23f82 HPN |
1644 | bfd_put_32 (output_bfd, |
1645 | - (h->plt.offset + plt_off3 + plt_off3_value_bias), | |
915e5146 HPN |
1646 | splt->contents + h->plt.offset + plt_off3); |
1647 | ||
1648 | /* Fill in the entry in the global offset table with the address of | |
1649 | the relocating stub. */ | |
1650 | bfd_put_32 (output_bfd, | |
1651 | (splt->output_section->vma | |
1652 | + splt->output_offset | |
1653 | + h->plt.offset | |
bac23f82 | 1654 | + plt_stub_offset), |
915e5146 HPN |
1655 | sgotplt->contents + got_offset); |
1656 | ||
1657 | /* Fill in the entry in the .rela.plt section. */ | |
1658 | rela.r_offset = (sgotplt->output_section->vma | |
1659 | + sgotplt->output_offset | |
1660 | + got_offset); | |
1661 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT); | |
1662 | rela.r_addend = 0; | |
947216bf AM |
1663 | loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela); |
1664 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
1665 | } |
1666 | ||
f5385ebf | 1667 | if (!h->def_regular) |
915e5146 HPN |
1668 | { |
1669 | /* Mark the symbol as undefined, rather than as defined in | |
1670 | the .plt section. Leave the value alone. */ | |
1671 | sym->st_shndx = SHN_UNDEF; | |
1672 | ||
1673 | /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't | |
1674 | know whether resetting the value is significant; if it really | |
1675 | is, rather than a quirk or bug in the sparc port, then I | |
1676 | believe we'd see this elsewhere. */ | |
1677 | /* If the symbol is weak, we do need to clear the value. | |
1678 | Otherwise, the PLT entry would provide a definition for | |
1679 | the symbol even if the symbol wasn't defined anywhere, | |
1680 | and so the symbol would never be NULL. */ | |
f5385ebf | 1681 | if (!h->ref_regular_nonweak) |
915e5146 HPN |
1682 | sym->st_value = 0; |
1683 | } | |
1684 | } | |
1685 | ||
e4a2175c HPN |
1686 | /* For an ordinary program, we emit .got relocs only for symbols that |
1687 | are in the dynamic-symbols table and are either defined by the | |
1688 | program or are undefined weak symbols, or are function symbols | |
1689 | where we do not output a PLT: the PLT reloc was output above and all | |
1690 | references to the function symbol are redirected to the PLT. */ | |
4d96d128 | 1691 | if (h->got.offset != (bfd_vma) -1 |
6849c52f HPN |
1692 | && (info->shared |
1693 | || (h->dynindx != -1 | |
e4a2175c | 1694 | && h->plt.offset == (bfd_vma) -1 |
f5385ebf | 1695 | && !h->def_regular |
6849c52f | 1696 | && h->root.type != bfd_link_hash_undefweak))) |
915e5146 HPN |
1697 | { |
1698 | asection *sgot; | |
1699 | asection *srela; | |
1700 | Elf_Internal_Rela rela; | |
947216bf | 1701 | bfd_byte *loc; |
dc810e39 | 1702 | bfd_byte *where; |
915e5146 HPN |
1703 | |
1704 | /* This symbol has an entry in the global offset table. Set it up. */ | |
1705 | ||
1706 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1707 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1708 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1709 | ||
1710 | rela.r_offset = (sgot->output_section->vma | |
1711 | + sgot->output_offset | |
dc810e39 | 1712 | + (h->got.offset &~ (bfd_vma) 1)); |
915e5146 HPN |
1713 | |
1714 | /* If this is a static link, or it is a -Bsymbolic link and the | |
1715 | symbol is defined locally or was forced to be local because | |
1716 | of a version file, we just want to emit a RELATIVE reloc. | |
1717 | The entry in the global offset table will already have been | |
1718 | initialized in the relocate_section function. */ | |
dc810e39 | 1719 | where = sgot->contents + (h->got.offset &~ (bfd_vma) 1); |
915e5146 HPN |
1720 | if (! elf_hash_table (info)->dynamic_sections_created |
1721 | || (info->shared | |
1722 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 1723 | && h->def_regular)) |
915e5146 HPN |
1724 | { |
1725 | rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
dc810e39 | 1726 | rela.r_addend = bfd_get_signed_32 (output_bfd, where); |
915e5146 HPN |
1727 | } |
1728 | else | |
1729 | { | |
dc810e39 | 1730 | bfd_put_32 (output_bfd, (bfd_vma) 0, where); |
915e5146 HPN |
1731 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT); |
1732 | rela.r_addend = 0; | |
1733 | } | |
1734 | ||
947216bf AM |
1735 | loc = srela->contents; |
1736 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1737 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
1738 | } |
1739 | ||
f5385ebf | 1740 | if (h->needs_copy) |
915e5146 HPN |
1741 | { |
1742 | asection *s; | |
1743 | Elf_Internal_Rela rela; | |
947216bf | 1744 | bfd_byte *loc; |
915e5146 HPN |
1745 | |
1746 | /* This symbol needs a copy reloc. Set it up. */ | |
1747 | ||
1748 | BFD_ASSERT (h->dynindx != -1 | |
1749 | && (h->root.type == bfd_link_hash_defined | |
1750 | || h->root.type == bfd_link_hash_defweak)); | |
1751 | ||
1752 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1753 | ".rela.bss"); | |
1754 | BFD_ASSERT (s != NULL); | |
1755 | ||
1756 | rela.r_offset = (h->root.u.def.value | |
1757 | + h->root.u.def.section->output_section->vma | |
1758 | + h->root.u.def.section->output_offset); | |
1759 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY); | |
1760 | rela.r_addend = 0; | |
947216bf AM |
1761 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1762 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
1763 | } |
1764 | ||
1765 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1766 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1767 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1768 | sym->st_shndx = SHN_ABS; | |
1769 | ||
b34976b6 | 1770 | return TRUE; |
915e5146 HPN |
1771 | } |
1772 | \f | |
1773 | /* Finish up the dynamic sections. */ | |
1774 | ||
b34976b6 | 1775 | static bfd_boolean |
915e5146 HPN |
1776 | elf_cris_finish_dynamic_sections (output_bfd, info) |
1777 | bfd *output_bfd; | |
1778 | struct bfd_link_info *info; | |
1779 | { | |
1780 | bfd *dynobj; | |
1781 | asection *sgot; | |
1782 | asection *sdyn; | |
1783 | ||
1784 | dynobj = elf_hash_table (info)->dynobj; | |
1785 | ||
1786 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1787 | BFD_ASSERT (sgot != NULL); | |
1788 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1789 | ||
1790 | if (elf_hash_table (info)->dynamic_sections_created) | |
1791 | { | |
1792 | asection *splt; | |
1793 | Elf32_External_Dyn *dyncon, *dynconend; | |
1794 | ||
1795 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1796 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1797 | ||
1798 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1799 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
915e5146 HPN |
1800 | for (; dyncon < dynconend; dyncon++) |
1801 | { | |
1802 | Elf_Internal_Dyn dyn; | |
1803 | asection *s; | |
1804 | ||
1805 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1806 | ||
1807 | switch (dyn.d_tag) | |
1808 | { | |
1809 | default: | |
1810 | break; | |
1811 | ||
1812 | case DT_PLTGOT: | |
1813 | s = bfd_get_section_by_name (output_bfd, ".got"); | |
1814 | BFD_ASSERT (s != NULL); | |
1815 | dyn.d_un.d_ptr = s->vma; | |
1816 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1817 | break; | |
1818 | ||
1819 | case DT_JMPREL: | |
1820 | /* Yes, we *can* have a .plt and no .plt.rela, for instance | |
1821 | if all symbols are found in the .got (not .got.plt). */ | |
1822 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1823 | dyn.d_un.d_ptr = s != NULL ? s->vma : 0; | |
1824 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1825 | break; | |
1826 | ||
1827 | case DT_PLTRELSZ: | |
1828 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1829 | if (s == NULL) | |
1830 | dyn.d_un.d_val = 0; | |
915e5146 | 1831 | else |
eea6121a | 1832 | dyn.d_un.d_val = s->size; |
915e5146 HPN |
1833 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1834 | break; | |
1835 | ||
1836 | case DT_RELASZ: | |
1837 | /* The procedure linkage table relocs (DT_JMPREL) should | |
1838 | not be included in the overall relocs (DT_RELA). | |
1839 | Therefore, we override the DT_RELASZ entry here to | |
1840 | make it not include the JMPREL relocs. Since the | |
1841 | linker script arranges for .rela.plt to follow all | |
1842 | other relocation sections, we don't have to worry | |
1843 | about changing the DT_RELA entry. */ | |
1844 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1845 | if (s != NULL) | |
eea6121a | 1846 | dyn.d_un.d_val -= s->size; |
915e5146 HPN |
1847 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1848 | break; | |
1849 | } | |
1850 | } | |
1851 | ||
1852 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 1853 | if (splt->size > 0) |
915e5146 | 1854 | { |
bac23f82 HPN |
1855 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) |
1856 | { | |
1857 | if (info->shared) | |
1858 | memcpy (splt->contents, elf_cris_pic_plt0_entry_v32, | |
1859 | PLT_ENTRY_SIZE_V32); | |
1860 | else | |
1861 | { | |
1862 | memcpy (splt->contents, elf_cris_plt0_entry_v32, | |
1863 | PLT_ENTRY_SIZE_V32); | |
1864 | bfd_put_32 (output_bfd, | |
1865 | sgot->output_section->vma | |
1866 | + sgot->output_offset + 4, | |
1867 | splt->contents + 4); | |
1868 | ||
1869 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
1870 | = PLT_ENTRY_SIZE_V32; | |
1871 | } | |
1872 | } | |
915e5146 | 1873 | else |
bac23f82 HPN |
1874 | { |
1875 | if (info->shared) | |
1876 | memcpy (splt->contents, elf_cris_pic_plt0_entry, | |
1877 | PLT_ENTRY_SIZE); | |
1878 | else | |
1879 | { | |
1880 | memcpy (splt->contents, elf_cris_plt0_entry, | |
1881 | PLT_ENTRY_SIZE); | |
1882 | bfd_put_32 (output_bfd, | |
1883 | sgot->output_section->vma | |
1884 | + sgot->output_offset + 4, | |
1885 | splt->contents + 6); | |
1886 | bfd_put_32 (output_bfd, | |
1887 | sgot->output_section->vma | |
1888 | + sgot->output_offset + 8, | |
1889 | splt->contents + 14); | |
1890 | ||
1891 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
1892 | = PLT_ENTRY_SIZE; | |
1893 | } | |
915e5146 HPN |
1894 | } |
1895 | } | |
1896 | } | |
1897 | ||
1898 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 1899 | if (sgot->size > 0) |
915e5146 HPN |
1900 | { |
1901 | if (sdyn == NULL) | |
1902 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1903 | else | |
1904 | bfd_put_32 (output_bfd, | |
1905 | sdyn->output_section->vma + sdyn->output_offset, | |
1906 | sgot->contents); | |
1907 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
1908 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
1909 | } | |
1910 | ||
1911 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1912 | ||
b34976b6 | 1913 | return TRUE; |
06c15ad7 HPN |
1914 | } |
1915 | \f | |
1916 | /* Return the section that should be marked against GC for a given | |
1917 | relocation. */ | |
1918 | ||
1919 | static asection * | |
1e2f5b6e | 1920 | cris_elf_gc_mark_hook (sec, info, rel, h, sym) |
b34976b6 AM |
1921 | asection *sec; |
1922 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1923 | Elf_Internal_Rela *rel; | |
1924 | struct elf_link_hash_entry *h; | |
1925 | Elf_Internal_Sym *sym; | |
06c15ad7 HPN |
1926 | { |
1927 | if (h != NULL) | |
1928 | { | |
1929 | switch (ELF32_R_TYPE (rel->r_info)) | |
1930 | { | |
1931 | case R_CRIS_GNU_VTINHERIT: | |
1932 | case R_CRIS_GNU_VTENTRY: | |
1933 | break; | |
1934 | ||
1935 | default: | |
1936 | switch (h->root.type) | |
1937 | { | |
1938 | case bfd_link_hash_defined: | |
1939 | case bfd_link_hash_defweak: | |
1940 | return h->root.u.def.section; | |
1941 | ||
1942 | case bfd_link_hash_common: | |
1943 | return h->root.u.c.p->section; | |
1944 | ||
1945 | default: | |
1946 | break; | |
1947 | } | |
1948 | } | |
1949 | } | |
1950 | else | |
1e2f5b6e | 1951 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
06c15ad7 HPN |
1952 | |
1953 | return NULL; | |
1954 | } | |
1955 | ||
1956 | /* Update the got entry reference counts for the section being removed. */ | |
1957 | ||
b34976b6 | 1958 | static bfd_boolean |
06c15ad7 | 1959 | cris_elf_gc_sweep_hook (abfd, info, sec, relocs) |
b34976b6 AM |
1960 | bfd *abfd ATTRIBUTE_UNUSED; |
1961 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1962 | asection *sec ATTRIBUTE_UNUSED; | |
1963 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
06c15ad7 | 1964 | { |
915e5146 HPN |
1965 | Elf_Internal_Shdr *symtab_hdr; |
1966 | struct elf_link_hash_entry **sym_hashes; | |
1967 | bfd_signed_vma *local_got_refcounts; | |
1968 | const Elf_Internal_Rela *rel, *relend; | |
915e5146 HPN |
1969 | bfd *dynobj; |
1970 | asection *sgot; | |
1971 | asection *srelgot; | |
1972 | ||
915e5146 HPN |
1973 | dynobj = elf_hash_table (info)->dynobj; |
1974 | if (dynobj == NULL) | |
b34976b6 | 1975 | return TRUE; |
915e5146 | 1976 | |
babfd660 KH |
1977 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1978 | sym_hashes = elf_sym_hashes (abfd); | |
1979 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1980 | ||
915e5146 HPN |
1981 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1982 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1983 | ||
1984 | relend = relocs + sec->reloc_count; | |
1985 | for (rel = relocs; rel < relend; rel++) | |
1986 | { | |
babfd660 | 1987 | unsigned long r_symndx; |
3eb128b2 AM |
1988 | struct elf_link_hash_entry *h = NULL; |
1989 | ||
1990 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1991 | if (r_symndx >= symtab_hdr->sh_info) | |
1992 | { | |
1993 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1994 | while (h->root.type == bfd_link_hash_indirect | |
1995 | || h->root.type == bfd_link_hash_warning) | |
1996 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1997 | } | |
babfd660 | 1998 | |
915e5146 HPN |
1999 | switch (ELF32_R_TYPE (rel->r_info)) |
2000 | { | |
2001 | case R_CRIS_16_GOT: | |
2002 | case R_CRIS_32_GOT: | |
3eb128b2 | 2003 | if (h != NULL) |
915e5146 | 2004 | { |
915e5146 HPN |
2005 | if (h->got.refcount > 0) |
2006 | { | |
2007 | --h->got.refcount; | |
2008 | if (h->got.refcount == 0) | |
2009 | { | |
2010 | /* We don't need the .got entry any more. */ | |
eea6121a AM |
2011 | sgot->size -= 4; |
2012 | srelgot->size -= sizeof (Elf32_External_Rela); | |
915e5146 HPN |
2013 | } |
2014 | } | |
2015 | break; | |
2016 | } | |
2017 | ||
2018 | local_got_reloc: | |
2019 | if (local_got_refcounts != NULL) | |
2020 | { | |
2021 | if (local_got_refcounts[r_symndx] > 0) | |
2022 | { | |
2023 | --local_got_refcounts[r_symndx]; | |
2024 | if (local_got_refcounts[r_symndx] == 0) | |
2025 | { | |
2026 | /* We don't need the .got entry any more. */ | |
eea6121a | 2027 | sgot->size -= 4; |
915e5146 | 2028 | if (info->shared) |
eea6121a | 2029 | srelgot->size -= sizeof (Elf32_External_Rela); |
915e5146 HPN |
2030 | } |
2031 | } | |
2032 | } | |
2033 | break; | |
2034 | ||
2035 | case R_CRIS_16_GOTPLT: | |
2036 | case R_CRIS_32_GOTPLT: | |
2037 | /* For local symbols, treat these like GOT relocs. */ | |
3eb128b2 | 2038 | if (h == NULL) |
915e5146 | 2039 | goto local_got_reloc; |
e4a2175c | 2040 | /* Fall through. */ |
3eb128b2 | 2041 | |
915e5146 HPN |
2042 | case R_CRIS_32_PLT_GOTREL: |
2043 | /* FIXME: We don't garbage-collect away the .got section. */ | |
2044 | if (local_got_refcounts != NULL) | |
2045 | local_got_refcounts[-1]--; | |
2046 | /* Fall through. */ | |
3eb128b2 | 2047 | |
915e5146 HPN |
2048 | case R_CRIS_8_PCREL: |
2049 | case R_CRIS_16_PCREL: | |
2050 | case R_CRIS_32_PCREL: | |
2051 | case R_CRIS_32_PLT_PCREL: | |
3eb128b2 | 2052 | if (h != NULL) |
915e5146 | 2053 | { |
0a4787a0 HPN |
2054 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2055 | && h->plt.refcount > 0) | |
915e5146 HPN |
2056 | --h->plt.refcount; |
2057 | } | |
2058 | break; | |
2059 | ||
2060 | default: | |
2061 | break; | |
2062 | } | |
2063 | } | |
2064 | ||
b34976b6 | 2065 | return TRUE; |
06c15ad7 HPN |
2066 | } |
2067 | ||
915e5146 HPN |
2068 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
2069 | entry but we found we will not create any. Called when we find we will | |
4d96d128 HPN |
2070 | not have any PLT for this symbol, by for example |
2071 | elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
2072 | or elf_cris_size_dynamic_sections if no dynamic sections will be | |
2073 | created (we're only linking static objects). */ | |
915e5146 | 2074 | |
b34976b6 | 2075 | static bfd_boolean |
915e5146 HPN |
2076 | elf_cris_adjust_gotplt_to_got (h, p) |
2077 | struct elf_cris_link_hash_entry *h; | |
2078 | PTR p; | |
2079 | { | |
2080 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
2081 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
2082 | ||
2083 | BFD_ASSERT (dynobj != NULL); | |
2084 | ||
e92d460e AM |
2085 | if (h->root.root.type == bfd_link_hash_warning) |
2086 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
2087 | ||
915e5146 HPN |
2088 | /* If nobody wanted a GOTPLT with this symbol, we're done. */ |
2089 | if (h->gotplt_refcount <= 0) | |
b34976b6 | 2090 | return TRUE; |
915e5146 HPN |
2091 | |
2092 | if (h->root.got.refcount > 0) | |
2093 | { | |
2094 | /* There's a GOT entry for this symbol. Just adjust the refcount. | |
2095 | Probably not necessary at this stage, but keeping it accurate | |
2096 | helps avoiding surprises later. */ | |
2097 | h->root.got.refcount += h->gotplt_refcount; | |
5e0f5ae3 | 2098 | h->gotplt_refcount = 0; |
915e5146 HPN |
2099 | } |
2100 | else | |
2101 | { | |
4d96d128 | 2102 | /* No GOT entry for this symbol. We need to create one. */ |
915e5146 HPN |
2103 | asection *sgot = bfd_get_section_by_name (dynobj, ".got"); |
2104 | asection *srelgot | |
2105 | = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2106 | ||
2107 | /* Put an accurate refcount there. */ | |
2108 | h->root.got.refcount = h->gotplt_refcount; | |
2109 | ||
5e0f5ae3 | 2110 | h->gotplt_refcount = 0; |
915e5146 | 2111 | |
44aa49bb HPN |
2112 | /* We always have a .got and a .rela.got section if there were |
2113 | GOTPLT relocs in input. */ | |
2114 | BFD_ASSERT (sgot != NULL && srelgot != NULL); | |
915e5146 HPN |
2115 | |
2116 | /* Allocate space in the .got section. */ | |
eea6121a | 2117 | sgot->size += 4; |
915e5146 HPN |
2118 | |
2119 | /* Allocate relocation space. */ | |
eea6121a | 2120 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2121 | } |
2122 | ||
b34976b6 | 2123 | return TRUE; |
915e5146 HPN |
2124 | } |
2125 | ||
2126 | /* Try to fold PLT entries with GOT entries. There are two cases when we | |
2127 | want to do this: | |
2128 | ||
2129 | - When all PLT references are GOTPLT references, and there are GOT | |
e4a2175c HPN |
2130 | references, and this is not the executable. We don't have to |
2131 | generate a PLT at all. | |
915e5146 | 2132 | |
e4a2175c HPN |
2133 | - When there are both (ordinary) PLT references and GOT references, |
2134 | and this isn't the executable. | |
915e5146 | 2135 | We want to make the PLT reference use the ordinary GOT entry rather |
e4a2175c HPN |
2136 | than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry, |
2137 | since the GOT entry will have to be resolved at startup anyway. | |
915e5146 HPN |
2138 | |
2139 | Though the latter case is handled when room for the PLT is allocated, | |
2140 | not here. | |
2141 | ||
e4a2175c HPN |
2142 | By folding into the GOT, we may need a round-trip to a PLT in the |
2143 | executable for calls, a loss in performance. Still, losing a | |
2144 | reloc is a win in size and at least in start-up time. | |
2145 | ||
915e5146 HPN |
2146 | Note that this function is called before symbols are forced local by |
2147 | version scripts. The differing cases are handled by | |
2148 | elf_cris_hide_symbol. */ | |
2149 | ||
b34976b6 | 2150 | static bfd_boolean |
915e5146 HPN |
2151 | elf_cris_try_fold_plt_to_got (h, p) |
2152 | struct elf_cris_link_hash_entry *h; | |
2153 | PTR p; | |
2154 | { | |
2155 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
2156 | ||
2157 | /* If there are no GOT references for this symbol, we can't fold any | |
2158 | other reference so there's nothing to do. Likewise if there are no | |
2159 | PLT references; GOTPLT references included. */ | |
2160 | if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0) | |
b34976b6 | 2161 | return TRUE; |
915e5146 HPN |
2162 | |
2163 | /* GOTPLT relocs are supposed to be included into the PLT refcount. */ | |
2164 | BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount); | |
2165 | ||
2166 | if (h->gotplt_refcount == h->root.plt.refcount) | |
2167 | { | |
4d96d128 | 2168 | /* The only PLT references are GOTPLT references, and there are GOT |
915e5146 HPN |
2169 | references. Convert PLT to GOT references. */ |
2170 | if (! elf_cris_adjust_gotplt_to_got (h, info)) | |
b34976b6 | 2171 | return FALSE; |
915e5146 HPN |
2172 | |
2173 | /* Clear the PLT references, so no PLT will be created. */ | |
2174 | h->root.plt.offset = (bfd_vma) -1; | |
2175 | } | |
2176 | ||
b34976b6 | 2177 | return TRUE; |
915e5146 HPN |
2178 | } |
2179 | ||
2180 | /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc | |
2181 | to use a GOT entry (and create one) rather than requiring a GOTPLT | |
2182 | entry. */ | |
2183 | ||
2184 | static void | |
e5094212 | 2185 | elf_cris_hide_symbol (info, h, force_local) |
915e5146 HPN |
2186 | struct bfd_link_info *info; |
2187 | struct elf_link_hash_entry *h; | |
b34976b6 | 2188 | bfd_boolean force_local; |
915e5146 HPN |
2189 | { |
2190 | elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info); | |
2191 | ||
e5094212 | 2192 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
915e5146 HPN |
2193 | } |
2194 | ||
2195 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2196 | regular object. The current definition is in some section of the | |
2197 | dynamic object, but we're not including those sections. We have to | |
2198 | change the definition to something the rest of the link can | |
2199 | understand. */ | |
2200 | ||
b34976b6 | 2201 | static bfd_boolean |
915e5146 HPN |
2202 | elf_cris_adjust_dynamic_symbol (info, h) |
2203 | struct bfd_link_info *info; | |
2204 | struct elf_link_hash_entry *h; | |
2205 | { | |
2206 | bfd *dynobj; | |
2207 | asection *s; | |
2208 | unsigned int power_of_two; | |
bac23f82 | 2209 | bfd_size_type plt_entry_size; |
915e5146 HPN |
2210 | |
2211 | dynobj = elf_hash_table (info)->dynobj; | |
2212 | ||
2213 | /* Make sure we know what is going on here. */ | |
2214 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 2215 | && (h->needs_plt |
f6e332e6 | 2216 | || h->u.weakdef != NULL |
f5385ebf AM |
2217 | || (h->def_dynamic |
2218 | && h->ref_regular | |
2219 | && !h->def_regular))); | |
915e5146 | 2220 | |
bac23f82 HPN |
2221 | plt_entry_size |
2222 | = (bfd_get_mach (dynobj) == bfd_mach_cris_v32 | |
2223 | ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); | |
2224 | ||
915e5146 HPN |
2225 | /* If this is a function, put it in the procedure linkage table. We |
2226 | will fill in the contents of the procedure linkage table later, | |
2227 | when we know the address of the .got section. */ | |
2228 | if (h->type == STT_FUNC | |
f5385ebf | 2229 | || h->needs_plt) |
915e5146 | 2230 | { |
6849c52f HPN |
2231 | /* If we link a program (not a DSO), we'll get rid of unnecessary |
2232 | PLT entries; we point to the actual symbols -- even for pic | |
2233 | relocs, because a program built with -fpic should have the same | |
2234 | result as one built without -fpic, specifically considering weak | |
2235 | symbols. | |
2236 | FIXME: m68k and i386 differ here, for unclear reasons. */ | |
915e5146 | 2237 | if (! info->shared |
f5385ebf | 2238 | && !h->def_dynamic) |
915e5146 HPN |
2239 | { |
2240 | /* This case can occur if we saw a PLT reloc in an input file, | |
6849c52f HPN |
2241 | but the symbol was not defined by a dynamic object. In such |
2242 | a case, we don't actually need to build a procedure linkage | |
2243 | table, and we can just do an absolute or PC reloc instead, or | |
4d96d128 | 2244 | change a .got.plt index to a .got index for GOTPLT relocs. */ |
f5385ebf AM |
2245 | BFD_ASSERT (h->needs_plt); |
2246 | h->needs_plt = 0; | |
915e5146 | 2247 | h->plt.offset = (bfd_vma) -1; |
915e5146 HPN |
2248 | return |
2249 | elf_cris_adjust_gotplt_to_got ((struct | |
2250 | elf_cris_link_hash_entry *) h, | |
2251 | info); | |
2252 | } | |
2253 | ||
e4a2175c HPN |
2254 | /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT; |
2255 | where a pointer-equivalent symbol was unimportant (i.e. more | |
2256 | like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid | |
2257 | of the PLT. We can't for the executable, because the GOT | |
2258 | entries will point to the PLT there (and be constant). */ | |
2259 | if (info->shared | |
2260 | && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*) | |
2261 | h, info)) | |
b34976b6 | 2262 | return FALSE; |
915e5146 HPN |
2263 | |
2264 | /* GC or folding may have rendered this entry unused. */ | |
2265 | if (h->plt.refcount <= 0) | |
2266 | { | |
f5385ebf | 2267 | h->needs_plt = 0; |
915e5146 | 2268 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 2269 | return TRUE; |
915e5146 HPN |
2270 | } |
2271 | ||
2272 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2273 | if (h->dynindx == -1) | |
2274 | { | |
c152c796 | 2275 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2276 | return FALSE; |
915e5146 HPN |
2277 | } |
2278 | ||
2279 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
2280 | BFD_ASSERT (s != NULL); | |
2281 | ||
2282 | /* If this is the first .plt entry, make room for the special | |
2283 | first entry. */ | |
eea6121a | 2284 | if (s->size == 0) |
bac23f82 | 2285 | s->size += plt_entry_size; |
915e5146 HPN |
2286 | |
2287 | /* If this symbol is not defined in a regular file, and we are | |
2288 | not generating a shared library, then set the symbol to this | |
6849c52f | 2289 | location in the .plt. */ |
915e5146 | 2290 | if (!info->shared |
f5385ebf | 2291 | && !h->def_regular) |
915e5146 HPN |
2292 | { |
2293 | h->root.u.def.section = s; | |
eea6121a | 2294 | h->root.u.def.value = s->size; |
915e5146 HPN |
2295 | } |
2296 | ||
4d96d128 HPN |
2297 | /* If there's already a GOT entry, use that, not a .got.plt. A |
2298 | GOT field still has a reference count when we get here; it's | |
e4a2175c HPN |
2299 | not yet changed to an offset. We can't do this for an |
2300 | executable, because then the reloc associated with the PLT | |
2301 | would get a non-PLT reloc pointing to the PLT. FIXME: Move | |
2302 | this to elf_cris_try_fold_plt_to_got. */ | |
2303 | if (info->shared && h->got.refcount > 0) | |
915e5146 HPN |
2304 | { |
2305 | h->got.refcount += h->plt.refcount; | |
2306 | ||
2307 | /* Mark the PLT offset to use the GOT entry by setting the low | |
2308 | bit in the plt offset; it is always a multiple of | |
bac23f82 HPN |
2309 | plt_entry_size (which is at least a multiple of 2). */ |
2310 | BFD_ASSERT ((s->size % plt_entry_size) == 0); | |
915e5146 HPN |
2311 | |
2312 | /* Change the PLT refcount to an offset. */ | |
eea6121a | 2313 | h->plt.offset = s->size; |
915e5146 HPN |
2314 | |
2315 | /* By not setting gotplt_offset (i.e. it remains at 0), we signal | |
2316 | that the got entry should be used instead. */ | |
2317 | BFD_ASSERT (((struct elf_cris_link_hash_entry *) | |
2318 | h)->gotplt_offset == 0); | |
2319 | ||
2320 | /* Make room for this entry. */ | |
bac23f82 | 2321 | s->size += plt_entry_size; |
915e5146 | 2322 | |
b34976b6 | 2323 | return TRUE; |
915e5146 HPN |
2324 | } |
2325 | ||
2326 | /* No GOT reference for this symbol; prepare for an ordinary PLT. */ | |
eea6121a | 2327 | h->plt.offset = s->size; |
915e5146 HPN |
2328 | |
2329 | /* Make room for this entry. */ | |
bac23f82 | 2330 | s->size += plt_entry_size; |
915e5146 HPN |
2331 | |
2332 | /* We also need to make an entry in the .got.plt section, which | |
2333 | will be placed in the .got section by the linker script. */ | |
2334 | ((struct elf_cris_link_hash_entry *) h)->gotplt_offset | |
2335 | = elf_cris_hash_table (info)->next_gotplt_entry; | |
2336 | elf_cris_hash_table (info)->next_gotplt_entry += 4; | |
2337 | ||
2338 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2339 | BFD_ASSERT (s != NULL); | |
eea6121a | 2340 | s->size += 4; |
915e5146 HPN |
2341 | |
2342 | /* We also need to make an entry in the .rela.plt section. */ | |
2343 | ||
2344 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2345 | BFD_ASSERT (s != NULL); | |
eea6121a | 2346 | s->size += sizeof (Elf32_External_Rela); |
915e5146 | 2347 | |
b34976b6 | 2348 | return TRUE; |
915e5146 HPN |
2349 | } |
2350 | ||
2351 | /* Reinitialize the plt offset now that it is not used as a reference | |
2352 | count any more. */ | |
2353 | h->plt.offset = (bfd_vma) -1; | |
2354 | ||
2355 | /* If this is a weak symbol, and there is a real definition, the | |
2356 | processor independent code will have arranged for us to see the | |
2357 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 2358 | if (h->u.weakdef != NULL) |
915e5146 | 2359 | { |
f6e332e6 AM |
2360 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2361 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2362 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2363 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 2364 | return TRUE; |
915e5146 HPN |
2365 | } |
2366 | ||
2367 | /* This is a reference to a symbol defined by a dynamic object which | |
2368 | is not a function. */ | |
2369 | ||
2370 | /* If we are creating a shared library, we must presume that the | |
2371 | only references to the symbol are via the global offset table. | |
2372 | For such cases we need not do anything here; the relocations will | |
2373 | be handled correctly by relocate_section. */ | |
2374 | if (info->shared) | |
b34976b6 | 2375 | return TRUE; |
915e5146 HPN |
2376 | |
2377 | /* If there are no references to this symbol that do not use the | |
2378 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2379 | if (!h->non_got_ref) |
b34976b6 | 2380 | return TRUE; |
915e5146 HPN |
2381 | |
2382 | /* We must allocate the symbol in our .dynbss section, which will | |
2383 | become part of the .bss section of the executable. There will be | |
2384 | an entry for this symbol in the .dynsym section. The dynamic | |
2385 | object will contain position independent code, so all references | |
2386 | from the dynamic object to this symbol will go through the global | |
2387 | offset table. The dynamic linker will use the .dynsym entry to | |
2388 | determine the address it must put in the global offset table, so | |
2389 | both the dynamic object and the regular object will refer to the | |
2390 | same memory location for the variable. */ | |
2391 | ||
2392 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
2393 | BFD_ASSERT (s != NULL); | |
2394 | ||
2395 | /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to | |
2396 | copy the initial value out of the dynamic object and into the | |
2397 | runtime process image. We need to remember the offset into the | |
2398 | .rela.bss section we are going to use. */ | |
2399 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2400 | { | |
2401 | asection *srel; | |
2402 | ||
2403 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
2404 | BFD_ASSERT (srel != NULL); | |
eea6121a | 2405 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 2406 | h->needs_copy = 1; |
915e5146 HPN |
2407 | } |
2408 | ||
2409 | /* Historic precedent: m68k and i386 allow max 8-byte alignment for the | |
2410 | thing to copy; so do we. */ | |
2411 | ||
2412 | /* We need to figure out the alignment required for this symbol. I | |
2413 | have no idea how ELF linkers handle this. */ | |
2414 | power_of_two = bfd_log2 (h->size); | |
2415 | if (power_of_two > 3) | |
2416 | power_of_two = 3; | |
2417 | ||
2418 | /* Apply the required alignment. */ | |
eea6121a | 2419 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
915e5146 HPN |
2420 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
2421 | { | |
2422 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 2423 | return FALSE; |
915e5146 HPN |
2424 | } |
2425 | ||
2426 | /* Define the symbol as being at this point in the section. */ | |
2427 | h->root.u.def.section = s; | |
eea6121a | 2428 | h->root.u.def.value = s->size; |
915e5146 HPN |
2429 | |
2430 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 2431 | s->size += h->size; |
915e5146 | 2432 | |
b34976b6 | 2433 | return TRUE; |
915e5146 HPN |
2434 | } |
2435 | ||
2436 | /* Look through the relocs for a section during the first phase. */ | |
a7c10850 | 2437 | |
b34976b6 | 2438 | static bfd_boolean |
06c15ad7 HPN |
2439 | cris_elf_check_relocs (abfd, info, sec, relocs) |
2440 | bfd *abfd; | |
2441 | struct bfd_link_info *info; | |
2442 | asection *sec; | |
2443 | const Elf_Internal_Rela *relocs; | |
2444 | { | |
915e5146 | 2445 | bfd *dynobj; |
06c15ad7 HPN |
2446 | Elf_Internal_Shdr *symtab_hdr; |
2447 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
915e5146 | 2448 | bfd_signed_vma *local_got_refcounts; |
06c15ad7 HPN |
2449 | const Elf_Internal_Rela *rel; |
2450 | const Elf_Internal_Rela *rel_end; | |
915e5146 HPN |
2451 | asection *sgot; |
2452 | asection *srelgot; | |
2453 | asection *sreloc; | |
a7c10850 | 2454 | |
1049f94e | 2455 | if (info->relocatable) |
b34976b6 | 2456 | return TRUE; |
a7c10850 | 2457 | |
915e5146 | 2458 | dynobj = elf_hash_table (info)->dynobj; |
06c15ad7 HPN |
2459 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2460 | sym_hashes = elf_sym_hashes (abfd); | |
a7c10850 | 2461 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
915e5146 HPN |
2462 | local_got_refcounts = elf_local_got_refcounts (abfd); |
2463 | ||
2464 | sgot = NULL; | |
2465 | srelgot = NULL; | |
2466 | sreloc = NULL; | |
2467 | ||
06c15ad7 HPN |
2468 | if (!elf_bad_symtab (abfd)) |
2469 | sym_hashes_end -= symtab_hdr->sh_info; | |
a7c10850 | 2470 | |
06c15ad7 HPN |
2471 | rel_end = relocs + sec->reloc_count; |
2472 | for (rel = relocs; rel < rel_end; rel++) | |
2473 | { | |
2474 | struct elf_link_hash_entry *h; | |
2475 | unsigned long r_symndx; | |
915e5146 | 2476 | enum elf_cris_reloc_type r_type; |
a7c10850 | 2477 | |
06c15ad7 HPN |
2478 | r_symndx = ELF32_R_SYM (rel->r_info); |
2479 | if (r_symndx < symtab_hdr->sh_info) | |
2480 | h = NULL; | |
2481 | else | |
2482 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
a7c10850 | 2483 | |
915e5146 HPN |
2484 | r_type = ELF32_R_TYPE (rel->r_info); |
2485 | ||
2486 | /* Some relocs require linker-created sections; we need to hang them | |
2487 | on the first input bfd we found that contained dynamic relocs. */ | |
2488 | switch (r_type) | |
2489 | { | |
2490 | case R_CRIS_16_GOT: | |
2491 | case R_CRIS_32_GOT: | |
2492 | case R_CRIS_32_GOTREL: | |
2493 | case R_CRIS_32_PLT_GOTREL: | |
2494 | case R_CRIS_32_PLT_PCREL: | |
2495 | case R_CRIS_16_GOTPLT: | |
2496 | case R_CRIS_32_GOTPLT: | |
2497 | if (dynobj == NULL) | |
2498 | { | |
2499 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
2500 | ||
bac23f82 HPN |
2501 | /* We could handle this if we can get a handle on the |
2502 | output bfd in elf_cris_adjust_dynamic_symbol. Failing | |
2503 | that, we must insist on dynobj being a specific mach. */ | |
2504 | if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32) | |
2505 | { | |
2506 | (*_bfd_error_handler) | |
2507 | (_("%B, section %A:\n v10/v32 compatible object %s" | |
2508 | " must not contain a PIC relocation"), | |
2509 | abfd, sec); | |
2510 | return FALSE; | |
2511 | } | |
2512 | ||
915e5146 HPN |
2513 | /* Create the .got section, so we can assume it's always |
2514 | present whenever there's a dynobj. */ | |
2515 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 2516 | return FALSE; |
915e5146 HPN |
2517 | } |
2518 | break; | |
2519 | ||
2520 | default: | |
2521 | break; | |
2522 | } | |
2523 | ||
2524 | /* Some relocs require a global offset table (but perhaps not a | |
2525 | specific GOT entry). */ | |
4d96d128 | 2526 | switch (r_type) |
915e5146 | 2527 | { |
44aa49bb HPN |
2528 | /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT |
2529 | entry only for local symbols. Unfortunately, we don't know | |
2530 | until later on if there's a version script that forces the | |
2531 | symbol local. We must have the .rela.got section in place | |
2532 | before we know if the symbol looks global now, so we need | |
2533 | to treat the reloc just like for R_CRIS_16_GOT and | |
2534 | R_CRIS_32_GOT. */ | |
2535 | case R_CRIS_16_GOTPLT: | |
2536 | case R_CRIS_32_GOTPLT: | |
915e5146 HPN |
2537 | case R_CRIS_16_GOT: |
2538 | case R_CRIS_32_GOT: | |
44aa49bb HPN |
2539 | if (srelgot == NULL |
2540 | && (h != NULL || info->shared)) | |
2541 | { | |
2542 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2543 | if (srelgot == NULL) | |
2544 | { | |
2545 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
2546 | if (srelgot == NULL | |
2547 | || !bfd_set_section_flags (dynobj, srelgot, | |
2548 | (SEC_ALLOC | |
2549 | | SEC_LOAD | |
2550 | | SEC_HAS_CONTENTS | |
2551 | | SEC_IN_MEMORY | |
2552 | | SEC_LINKER_CREATED | |
2553 | | SEC_READONLY)) | |
2554 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) | |
b34976b6 | 2555 | return FALSE; |
44aa49bb HPN |
2556 | } |
2557 | } | |
2558 | /* Fall through. */ | |
2559 | ||
915e5146 HPN |
2560 | case R_CRIS_32_GOTREL: |
2561 | case R_CRIS_32_PLT_GOTREL: | |
2562 | if (sgot == NULL) | |
2563 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2564 | ||
2565 | if (local_got_refcounts == NULL) | |
2566 | { | |
dc810e39 | 2567 | bfd_size_type amt; |
915e5146 HPN |
2568 | |
2569 | /* We use index local_got_refcounts[-1] to count all | |
2570 | GOT-relative relocations that do not have explicit | |
2571 | GOT entries. */ | |
dc810e39 AM |
2572 | amt = symtab_hdr->sh_info + 1; |
2573 | amt *= sizeof (bfd_signed_vma); | |
51b64d56 | 2574 | local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt)); |
915e5146 | 2575 | if (local_got_refcounts == NULL) |
b34976b6 | 2576 | return FALSE; |
915e5146 HPN |
2577 | |
2578 | local_got_refcounts++; | |
2579 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
2580 | } | |
2581 | break; | |
2582 | ||
2583 | default: | |
2584 | break; | |
2585 | } | |
2586 | ||
4d96d128 | 2587 | switch (r_type) |
06c15ad7 | 2588 | { |
915e5146 HPN |
2589 | case R_CRIS_16_GOTPLT: |
2590 | case R_CRIS_32_GOTPLT: | |
2591 | /* Mark that we need a GOT entry if the PLT entry (and its GOT | |
2592 | entry) is eliminated. We can only do this for a non-local | |
2593 | symbol. */ | |
2594 | if (h != NULL) | |
2595 | { | |
2596 | ((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++; | |
2597 | goto handle_gotplt_reloc; | |
2598 | } | |
2599 | /* If h is NULL then this is a local symbol, and we must make a | |
2600 | GOT entry for it, so handle it like a GOT reloc. */ | |
2601 | /* Fall through. */ | |
2602 | ||
2603 | case R_CRIS_16_GOT: | |
2604 | case R_CRIS_32_GOT: | |
2605 | /* This symbol requires a global offset table entry. */ | |
915e5146 HPN |
2606 | if (h != NULL) |
2607 | { | |
51b64d56 | 2608 | if (h->got.refcount == 0) |
915e5146 | 2609 | { |
915e5146 HPN |
2610 | /* Make sure this symbol is output as a dynamic symbol. */ |
2611 | if (h->dynindx == -1) | |
2612 | { | |
c152c796 | 2613 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2614 | return FALSE; |
915e5146 HPN |
2615 | } |
2616 | ||
2617 | /* Allocate space in the .got section. */ | |
eea6121a | 2618 | sgot->size += 4; |
915e5146 | 2619 | /* Allocate relocation space. */ |
eea6121a | 2620 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 | 2621 | } |
51b64d56 | 2622 | h->got.refcount++; |
915e5146 HPN |
2623 | } |
2624 | else | |
2625 | { | |
2626 | /* This is a global offset table entry for a local symbol. */ | |
51b64d56 | 2627 | if (local_got_refcounts[r_symndx] == 0) |
915e5146 | 2628 | { |
eea6121a | 2629 | sgot->size += 4; |
915e5146 HPN |
2630 | if (info->shared) |
2631 | { | |
2632 | /* If we are generating a shared object, we need to | |
2633 | output a R_CRIS_RELATIVE reloc so that the dynamic | |
2634 | linker can adjust this GOT entry. */ | |
eea6121a | 2635 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2636 | } |
2637 | } | |
51b64d56 | 2638 | local_got_refcounts[r_symndx]++; |
915e5146 HPN |
2639 | } |
2640 | break; | |
2641 | ||
2642 | case R_CRIS_32_GOTREL: | |
2643 | /* This reference requires a global offset table. | |
2644 | FIXME: The actual refcount isn't used currently; the .got | |
2645 | section can't be removed if there were any references in the | |
2646 | input. */ | |
2647 | local_got_refcounts[-1]++; | |
2648 | break; | |
2649 | ||
2650 | handle_gotplt_reloc: | |
2651 | ||
2652 | case R_CRIS_32_PLT_GOTREL: | |
2653 | /* This reference requires a global offset table. */ | |
2654 | local_got_refcounts[-1]++; | |
2655 | /* Fall through. */ | |
2656 | ||
2657 | case R_CRIS_32_PLT_PCREL: | |
2658 | /* This symbol requires a procedure linkage table entry. We | |
2659 | actually build the entry in adjust_dynamic_symbol, | |
2660 | because this might be a case of linking PIC code which is | |
2661 | never referenced by a dynamic object, in which case we | |
2662 | don't need to generate a procedure linkage table entry | |
2663 | after all. */ | |
2664 | ||
ada1953e HPN |
2665 | /* Beware: if we'd check for visibility of the symbol here |
2666 | (and not marking the need for a PLT when non-visible), we'd | |
2667 | get into trouble with keeping handling consistent with | |
2668 | regards to relocs found before definition and GOTPLT | |
2669 | handling. Eliminable PLT entries will be dealt with later | |
2670 | anyway. */ | |
2671 | if (h == NULL) | |
915e5146 HPN |
2672 | continue; |
2673 | ||
f5385ebf | 2674 | h->needs_plt = 1; |
51b64d56 | 2675 | h->plt.refcount++; |
915e5146 HPN |
2676 | break; |
2677 | ||
2678 | case R_CRIS_8: | |
2679 | case R_CRIS_16: | |
2680 | case R_CRIS_32: | |
2681 | /* Let's help debug shared library creation. Any of these | |
2682 | relocs can be used in shared libs, but pages containing them | |
2683 | cannot be shared. Don't warn for sections we don't care | |
2684 | about, such as debug sections or non-constant sections. We | |
2685 | can't help tables of (global) function pointers, for example, | |
2686 | though they must be emitted in a data section to avoid having | |
2687 | impure text sections. */ | |
2688 | if (info->shared | |
2689 | && (sec->flags & SEC_ALLOC) != 0 | |
2690 | && (sec->flags & SEC_READONLY) != 0) | |
2691 | { | |
2692 | /* FIXME: How do we make this optionally a warning only? */ | |
8f615d07 | 2693 | (*_bfd_error_handler) |
bac23f82 HPN |
2694 | (_("%B, section %A:\n relocation %s should not" |
2695 | " be used in a shared object; recompile with -fPIC"), | |
d003868e AM |
2696 | abfd, |
2697 | sec, | |
8f615d07 | 2698 | cris_elf_howto_table[r_type].name); |
915e5146 HPN |
2699 | } |
2700 | /* Fall through. */ | |
2701 | ||
2702 | case R_CRIS_8_PCREL: | |
2703 | case R_CRIS_16_PCREL: | |
2704 | case R_CRIS_32_PCREL: | |
2705 | if (h != NULL) | |
2706 | { | |
f5385ebf | 2707 | h->non_got_ref = 1; |
915e5146 HPN |
2708 | |
2709 | /* Make sure a plt entry is created for this symbol if it | |
2710 | turns out to be a function defined by a dynamic object. */ | |
0a4787a0 HPN |
2711 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
2712 | h->plt.refcount++; | |
915e5146 HPN |
2713 | } |
2714 | ||
2715 | /* If we are creating a shared library and this is not a local | |
2716 | symbol, we need to copy the reloc into the shared library. | |
2717 | However when linking with -Bsymbolic and this is a global | |
2718 | symbol which is defined in an object we are including in the | |
2719 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
2720 | reloc directly. At this point we have not seen all the input | |
2721 | files, so it is possible that DEF_REGULAR is not set now but | |
2722 | will be set later (it is never cleared). In case of a weak | |
2723 | definition, DEF_REGULAR may be cleared later by a strong | |
2724 | definition in a shared library. We account for that | |
2725 | possibility below by storing information in the relocs_copied | |
2726 | field of the hash table entry. A similar situation occurs | |
2727 | when creating shared libraries and symbol visibility changes | |
2728 | render the symbol local. */ | |
2729 | ||
2730 | /* No need to do anything if we're not creating a shared object. */ | |
2731 | if (! info->shared) | |
2732 | break; | |
2733 | ||
2734 | /* We don't need to handle relocs into sections not going into | |
2735 | the "real" output. */ | |
2736 | if ((sec->flags & SEC_ALLOC) == 0) | |
2737 | break; | |
2738 | ||
2739 | /* We can only eliminate PC-relative relocs. */ | |
2740 | if (r_type == R_CRIS_8_PCREL | |
2741 | || r_type == R_CRIS_16_PCREL | |
2742 | || r_type == R_CRIS_32_PCREL) | |
2743 | { | |
2744 | /* If the symbol is local, then we can eliminate the reloc. */ | |
0a4787a0 | 2745 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
2746 | break; |
2747 | ||
2748 | /* If this is with -Bsymbolic and the symbol isn't weak, and | |
2749 | is defined by an ordinary object (the ones we include in | |
2750 | this shared library) then we can also eliminate the | |
2751 | reloc. See comment above for more eliminable cases which | |
2752 | we can't identify at this time. */ | |
2753 | if (info->symbolic | |
2754 | && h->root.type != bfd_link_hash_defweak | |
f5385ebf | 2755 | && h->def_regular) |
915e5146 | 2756 | break; |
bac23f82 HPN |
2757 | |
2758 | if ((sec->flags & SEC_READONLY) != 0) | |
2759 | { | |
2760 | /* FIXME: How do we make this optionally a warning only? */ | |
2761 | (*_bfd_error_handler) | |
2762 | (_("%B, section %A:\n relocation %s should not be used" | |
2763 | " in a shared object; recompile with -fPIC"), | |
2764 | abfd, | |
2765 | sec, | |
2766 | cris_elf_howto_table[r_type].name); | |
2767 | } | |
915e5146 HPN |
2768 | } |
2769 | ||
2770 | /* We create a reloc section in dynobj and make room for this | |
2771 | reloc. */ | |
2772 | if (sreloc == NULL) | |
2773 | { | |
2774 | const char *name; | |
2775 | ||
2776 | name = (bfd_elf_string_from_elf_section | |
2777 | (abfd, | |
2778 | elf_elfheader (abfd)->e_shstrndx, | |
2779 | elf_section_data (sec)->rel_hdr.sh_name)); | |
2780 | if (name == NULL) | |
b34976b6 | 2781 | return FALSE; |
915e5146 HPN |
2782 | |
2783 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2784 | && strcmp (bfd_get_section_name (abfd, sec), | |
2785 | name + 5) == 0); | |
2786 | ||
2787 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2788 | if (sreloc == NULL) | |
2789 | { | |
2790 | sreloc = bfd_make_section (dynobj, name); | |
2791 | if (sreloc == NULL | |
2792 | || !bfd_set_section_flags (dynobj, sreloc, | |
2793 | (SEC_ALLOC | |
2794 | | SEC_LOAD | |
2795 | | SEC_HAS_CONTENTS | |
2796 | | SEC_IN_MEMORY | |
2797 | | SEC_LINKER_CREATED | |
2798 | | SEC_READONLY)) | |
2799 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 2800 | return FALSE; |
915e5146 | 2801 | } |
99e4ae17 AJ |
2802 | if (sec->flags & SEC_READONLY) |
2803 | info->flags |= DF_TEXTREL; | |
915e5146 HPN |
2804 | } |
2805 | ||
eea6121a | 2806 | sreloc->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2807 | |
2808 | /* If we are linking with -Bsymbolic, we count the number of PC | |
2809 | relative relocations we have entered for this symbol, so that | |
2810 | we can discard them again if the symbol is later defined by a | |
2811 | regular object. We know that h is really a pointer to an | |
2812 | elf_cris_link_hash_entry. */ | |
4d96d128 HPN |
2813 | if ((r_type == R_CRIS_8_PCREL |
2814 | || r_type == R_CRIS_16_PCREL | |
2815 | || r_type == R_CRIS_32_PCREL) | |
915e5146 HPN |
2816 | && info->symbolic) |
2817 | { | |
2818 | struct elf_cris_link_hash_entry *eh; | |
2819 | struct elf_cris_pcrel_relocs_copied *p; | |
2820 | ||
2821 | eh = (struct elf_cris_link_hash_entry *) h; | |
2822 | ||
2823 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
2824 | if (p->section == sreloc) | |
2825 | break; | |
2826 | ||
2827 | if (p == NULL) | |
2828 | { | |
2829 | p = ((struct elf_cris_pcrel_relocs_copied *) | |
dc810e39 | 2830 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
915e5146 | 2831 | if (p == NULL) |
b34976b6 | 2832 | return FALSE; |
915e5146 HPN |
2833 | p->next = eh->pcrel_relocs_copied; |
2834 | eh->pcrel_relocs_copied = p; | |
2835 | p->section = sreloc; | |
2836 | p->count = 0; | |
2837 | } | |
2838 | ||
2839 | ++p->count; | |
2840 | } | |
2841 | break; | |
2842 | ||
06c15ad7 HPN |
2843 | /* This relocation describes the C++ object vtable hierarchy. |
2844 | Reconstruct it for later use during GC. */ | |
2845 | case R_CRIS_GNU_VTINHERIT: | |
c152c796 | 2846 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 2847 | return FALSE; |
06c15ad7 | 2848 | break; |
a7c10850 | 2849 | |
06c15ad7 HPN |
2850 | /* This relocation describes which C++ vtable entries are actually |
2851 | used. Record for later use during GC. */ | |
2852 | case R_CRIS_GNU_VTENTRY: | |
c152c796 | 2853 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 2854 | return FALSE; |
06c15ad7 | 2855 | break; |
4d96d128 HPN |
2856 | |
2857 | default: | |
2858 | /* Other relocs do not appear here. */ | |
2859 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2860 | return FALSE; |
06c15ad7 HPN |
2861 | } |
2862 | } | |
a7c10850 | 2863 | |
b34976b6 | 2864 | return TRUE; |
06c15ad7 | 2865 | } |
4da81684 | 2866 | |
915e5146 HPN |
2867 | /* Set the sizes of the dynamic sections. */ |
2868 | ||
b34976b6 | 2869 | static bfd_boolean |
915e5146 | 2870 | elf_cris_size_dynamic_sections (output_bfd, info) |
99e4ae17 | 2871 | bfd *output_bfd ATTRIBUTE_UNUSED; |
915e5146 HPN |
2872 | struct bfd_link_info *info; |
2873 | { | |
2874 | bfd *dynobj; | |
2875 | asection *s; | |
b34976b6 AM |
2876 | bfd_boolean plt; |
2877 | bfd_boolean relocs; | |
915e5146 HPN |
2878 | |
2879 | dynobj = elf_hash_table (info)->dynobj; | |
2880 | BFD_ASSERT (dynobj != NULL); | |
2881 | ||
2882 | if (elf_hash_table (info)->dynamic_sections_created) | |
2883 | { | |
2884 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 2885 | if (info->executable) |
915e5146 HPN |
2886 | { |
2887 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2888 | BFD_ASSERT (s != NULL); | |
eea6121a | 2889 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
915e5146 HPN |
2890 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2891 | } | |
2892 | } | |
2893 | else | |
2894 | { | |
2895 | /* Adjust all expected GOTPLT uses to use a GOT entry instead. */ | |
2896 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
2897 | elf_cris_adjust_gotplt_to_got, | |
2898 | (PTR) info); | |
2899 | ||
2900 | /* We may have created entries in the .rela.got section. | |
2901 | However, if we are not creating the dynamic sections, we will | |
2902 | not actually use these entries. Reset the size of .rela.got, | |
2903 | which will cause it to get stripped from the output file | |
2904 | below. */ | |
2905 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2906 | if (s != NULL) | |
eea6121a | 2907 | s->size = 0; |
915e5146 HPN |
2908 | } |
2909 | ||
2910 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
2911 | relative relocs against symbols defined in a regular object. We | |
2912 | allocated space for them in the check_relocs routine, but we will not | |
2913 | fill them in in the relocate_section routine. We also discard space | |
2914 | for relocs that have become for local symbols due to symbol | |
4d96d128 HPN |
2915 | visibility changes. For programs, we discard space for relocs for |
2916 | symbols not referenced by any dynamic object. */ | |
915e5146 HPN |
2917 | if (info->shared) |
2918 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
4d96d128 HPN |
2919 | elf_cris_discard_excess_dso_dynamics, |
2920 | (PTR) info); | |
2921 | else | |
2922 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
2923 | elf_cris_discard_excess_program_dynamics, | |
915e5146 HPN |
2924 | (PTR) info); |
2925 | ||
2926 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2927 | determined the sizes of the various dynamic sections. Allocate | |
2928 | memory for them. */ | |
b34976b6 AM |
2929 | plt = FALSE; |
2930 | relocs = FALSE; | |
915e5146 HPN |
2931 | for (s = dynobj->sections; s != NULL; s = s->next) |
2932 | { | |
2933 | const char *name; | |
b34976b6 | 2934 | bfd_boolean strip; |
915e5146 HPN |
2935 | |
2936 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2937 | continue; | |
2938 | ||
2939 | /* It's OK to base decisions on the section name, because none | |
2940 | of the dynobj section names depend upon the input files. */ | |
2941 | name = bfd_get_section_name (dynobj, s); | |
2942 | ||
b34976b6 | 2943 | strip = FALSE; |
915e5146 HPN |
2944 | |
2945 | if (strcmp (name, ".plt") == 0) | |
2946 | { | |
eea6121a | 2947 | if (s->size == 0) |
915e5146 HPN |
2948 | { |
2949 | /* Strip this section if we don't need it; see the | |
2950 | comment below. */ | |
b34976b6 | 2951 | strip = TRUE; |
915e5146 HPN |
2952 | } |
2953 | else | |
2954 | { | |
2955 | /* Remember whether there is a PLT. */ | |
b34976b6 | 2956 | plt = TRUE; |
915e5146 HPN |
2957 | } |
2958 | } | |
2959 | else if (strncmp (name, ".rela", 5) == 0) | |
2960 | { | |
eea6121a | 2961 | if (s->size == 0) |
915e5146 HPN |
2962 | { |
2963 | /* If we don't need this section, strip it from the | |
2964 | output file. This is mostly to handle .rela.bss and | |
2965 | .rela.plt. We must create both sections in | |
2966 | create_dynamic_sections, because they must be created | |
2967 | before the linker maps input sections to output | |
2968 | sections. The linker does that before | |
2969 | adjust_dynamic_symbol is called, and it is that | |
2970 | function which decides whether anything needs to go | |
2971 | into these sections. */ | |
b34976b6 | 2972 | strip = TRUE; |
915e5146 HPN |
2973 | } |
2974 | else | |
2975 | { | |
915e5146 HPN |
2976 | /* Remember whether there are any reloc sections other |
2977 | than .rela.plt. */ | |
2978 | if (strcmp (name, ".rela.plt") != 0) | |
b34976b6 | 2979 | relocs = TRUE; |
915e5146 | 2980 | |
915e5146 HPN |
2981 | /* We use the reloc_count field as a counter if we need |
2982 | to copy relocs into the output file. */ | |
2983 | s->reloc_count = 0; | |
2984 | } | |
2985 | } | |
2986 | else if (strncmp (name, ".got", 4) != 0) | |
2987 | { | |
2988 | /* It's not one of our sections, so don't allocate space. */ | |
2989 | continue; | |
2990 | } | |
2991 | ||
2992 | if (strip) | |
2993 | { | |
2994 | _bfd_strip_section_from_output (info, s); | |
2995 | continue; | |
2996 | } | |
2997 | ||
2998 | /* Allocate memory for the section contents. We use bfd_zalloc here | |
2999 | in case unused entries are not reclaimed before the section's | |
3000 | contents are written out. This should not happen, but this way | |
3001 | if it does, we will not write out garbage. For reloc sections, | |
3002 | this will make entries have the type R_CRIS_NONE. */ | |
eea6121a AM |
3003 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
3004 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 3005 | return FALSE; |
915e5146 HPN |
3006 | } |
3007 | ||
3008 | if (elf_hash_table (info)->dynamic_sections_created) | |
3009 | { | |
3010 | /* Add some entries to the .dynamic section. We fill in the | |
3011 | values later, in elf_cris_finish_dynamic_sections, but we | |
3012 | must add the entries now so that we get the correct size for | |
3013 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3014 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3015 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3016 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3017 | |
915e5146 HPN |
3018 | if (!info->shared) |
3019 | { | |
dc810e39 | 3020 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3021 | return FALSE; |
915e5146 HPN |
3022 | } |
3023 | ||
3024 | if (plt) | |
3025 | { | |
dc810e39 AM |
3026 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3027 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3028 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3029 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3030 | return FALSE; |
915e5146 HPN |
3031 | } |
3032 | ||
3033 | if (relocs) | |
3034 | { | |
dc810e39 AM |
3035 | if (!add_dynamic_entry (DT_RELA, 0) |
3036 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3037 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3038 | return FALSE; |
915e5146 HPN |
3039 | } |
3040 | ||
99e4ae17 | 3041 | if ((info->flags & DF_TEXTREL) != 0) |
915e5146 | 3042 | { |
dc810e39 | 3043 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3044 | return FALSE; |
915e5146 HPN |
3045 | info->flags |= DF_TEXTREL; |
3046 | } | |
3047 | } | |
dc810e39 | 3048 | #undef add_dynamic_entry |
915e5146 | 3049 | |
b34976b6 | 3050 | return TRUE; |
915e5146 HPN |
3051 | } |
3052 | ||
3053 | /* This function is called via elf_cris_link_hash_traverse if we are | |
3054 | creating a shared object. In the -Bsymbolic case, it discards the | |
3055 | space allocated to copy PC relative relocs against symbols which | |
3056 | are defined in regular objects. For the normal non-symbolic case, | |
3057 | we also discard space for relocs that have become local due to | |
3058 | symbol visibility changes. We allocated space for them in the | |
3059 | check_relocs routine, but we won't fill them in in the | |
3060 | relocate_section routine. */ | |
3061 | ||
b34976b6 | 3062 | static bfd_boolean |
4d96d128 | 3063 | elf_cris_discard_excess_dso_dynamics (h, inf) |
915e5146 HPN |
3064 | struct elf_cris_link_hash_entry *h; |
3065 | PTR inf; | |
3066 | { | |
3067 | struct elf_cris_pcrel_relocs_copied *s; | |
3068 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3069 | ||
e92d460e AM |
3070 | if (h->root.root.type == bfd_link_hash_warning) |
3071 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
3072 | ||
915e5146 HPN |
3073 | /* If a symbol has been forced local or we have found a regular |
3074 | definition for the symbolic link case, then we won't be needing | |
3075 | any relocs. */ | |
f5385ebf AM |
3076 | if (h->root.def_regular |
3077 | && (h->root.forced_local | |
915e5146 HPN |
3078 | || info->symbolic)) |
3079 | { | |
3080 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 3081 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
4d96d128 HPN |
3082 | } |
3083 | ||
b34976b6 | 3084 | return TRUE; |
4d96d128 HPN |
3085 | } |
3086 | ||
3087 | /* This function is called via elf_cris_link_hash_traverse if we are *not* | |
3088 | creating a shared object. We discard space for relocs for symbols put | |
3089 | in the .got, but which we found we do not have to resolve at run-time. */ | |
3090 | ||
b34976b6 | 3091 | static bfd_boolean |
4d96d128 HPN |
3092 | elf_cris_discard_excess_program_dynamics (h, inf) |
3093 | struct elf_cris_link_hash_entry *h; | |
3094 | PTR inf; | |
3095 | { | |
3096 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3097 | ||
e92d460e AM |
3098 | if (h->root.root.type == bfd_link_hash_warning) |
3099 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
3100 | ||
4d96d128 HPN |
3101 | /* If we're not creating a shared library and have a symbol which is |
3102 | referred to by .got references, but the symbol is defined locally, | |
e4a2175c HPN |
3103 | (or rather, not defined by a DSO) then lose the reloc for the .got |
3104 | (don't allocate room for it). Likewise for relocs for something | |
3105 | for which we create a PLT. */ | |
f5385ebf | 3106 | if (!h->root.def_dynamic |
e4a2175c | 3107 | || h->root.plt.refcount > 0) |
4d96d128 HPN |
3108 | { |
3109 | if (h->root.got.refcount > 0 | |
3110 | /* The size of this section is only valid and in sync with the | |
3111 | various reference counts if we do dynamic; don't decrement it | |
3112 | otherwise. */ | |
3113 | && elf_hash_table (info)->dynamic_sections_created) | |
3114 | { | |
3115 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
3116 | asection *srelgot; | |
3117 | ||
3118 | BFD_ASSERT (dynobj != NULL); | |
99c79b2e | 3119 | |
4d96d128 HPN |
3120 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
3121 | ||
3122 | BFD_ASSERT (srelgot != NULL); | |
3123 | ||
eea6121a | 3124 | srelgot->size -= sizeof (Elf32_External_Rela); |
4d96d128 HPN |
3125 | } |
3126 | ||
3127 | /* If the locally-defined symbol isn't used by a DSO, then we don't | |
3128 | have to export it as a dynamic symbol. This was already done for | |
3129 | functions; doing this for all symbols would presumably not | |
e5dfef09 HPN |
3130 | introduce new problems. Of course we don't do this if we're |
3131 | exporting all dynamic symbols. */ | |
0741c7be | 3132 | if (! info->export_dynamic |
77cfaee6 | 3133 | && h->root.dynindx != -1 |
f5385ebf AM |
3134 | && !h->root.def_dynamic |
3135 | && !h->root.ref_dynamic) | |
e5dfef09 HPN |
3136 | { |
3137 | h->root.dynindx = -1; | |
3138 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3139 | h->root.dynstr_index); | |
3140 | } | |
915e5146 HPN |
3141 | } |
3142 | ||
b34976b6 | 3143 | return TRUE; |
915e5146 HPN |
3144 | } |
3145 | ||
3146 | /* Reject a file depending on presence and expectation of prefixed | |
3147 | underscores on symbols. */ | |
4da81684 | 3148 | |
b34976b6 | 3149 | static bfd_boolean |
4da81684 HPN |
3150 | cris_elf_object_p (abfd) |
3151 | bfd *abfd; | |
3152 | { | |
bac23f82 HPN |
3153 | if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags)) |
3154 | return FALSE; | |
3155 | ||
4da81684 HPN |
3156 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)) |
3157 | return (bfd_get_symbol_leading_char (abfd) == '_'); | |
3158 | else | |
3159 | return (bfd_get_symbol_leading_char (abfd) == 0); | |
3160 | } | |
3161 | ||
bac23f82 HPN |
3162 | /* Mark presence or absence of leading underscore. Set machine type |
3163 | flags from mach type. */ | |
4da81684 HPN |
3164 | |
3165 | static void | |
3166 | cris_elf_final_write_processing (abfd, linker) | |
3167 | bfd *abfd; | |
b34976b6 | 3168 | bfd_boolean linker ATTRIBUTE_UNUSED; |
4da81684 | 3169 | { |
bac23f82 HPN |
3170 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; |
3171 | ||
3172 | e_flags &= ~EF_CRIS_UNDERSCORE; | |
4da81684 | 3173 | if (bfd_get_symbol_leading_char (abfd) == '_') |
bac23f82 HPN |
3174 | e_flags |= EF_CRIS_UNDERSCORE; |
3175 | ||
3176 | switch (bfd_get_mach (abfd)) | |
3177 | { | |
3178 | case bfd_mach_cris_v0_v10: | |
3179 | e_flags |= EF_CRIS_VARIANT_ANY_V0_V10; | |
3180 | break; | |
3181 | ||
3182 | case bfd_mach_cris_v10_v32: | |
3183 | e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32; | |
3184 | break; | |
3185 | ||
3186 | case bfd_mach_cris_v32: | |
3187 | e_flags |= EF_CRIS_VARIANT_V32; | |
3188 | break; | |
3189 | ||
3190 | default: | |
3191 | _bfd_abort (__FILE__, __LINE__, | |
3192 | _("Unexpected machine number")); | |
3193 | } | |
3194 | ||
3195 | elf_elfheader (abfd)->e_flags = e_flags; | |
3196 | } | |
3197 | ||
3198 | /* Set the mach type from e_flags value. */ | |
3199 | ||
3200 | static bfd_boolean | |
3201 | cris_elf_set_mach_from_flags (abfd, flags) | |
3202 | bfd *abfd; | |
3203 | unsigned long flags; | |
3204 | { | |
3205 | switch (flags & EF_CRIS_VARIANT_MASK) | |
3206 | { | |
3207 | case EF_CRIS_VARIANT_ANY_V0_V10: | |
3208 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10); | |
3209 | break; | |
3210 | ||
3211 | case EF_CRIS_VARIANT_V32: | |
3212 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32); | |
3213 | break; | |
3214 | ||
3215 | case EF_CRIS_VARIANT_COMMON_V10_V32: | |
3216 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32); | |
3217 | break; | |
3218 | ||
3219 | default: | |
3220 | /* Since we don't recognize them, we obviously can't support them | |
3221 | with this code; we'd have to require that all future handling | |
3222 | would be optional. */ | |
3223 | bfd_set_error (bfd_error_wrong_format); | |
3224 | return FALSE; | |
3225 | } | |
3226 | ||
3227 | return TRUE; | |
4da81684 HPN |
3228 | } |
3229 | ||
3230 | /* Display the flags field. */ | |
3231 | ||
b34976b6 | 3232 | static bfd_boolean |
4da81684 HPN |
3233 | cris_elf_print_private_bfd_data (abfd, ptr) |
3234 | bfd *abfd; | |
3235 | PTR ptr; | |
3236 | { | |
3237 | FILE *file = (FILE *) ptr; | |
3238 | ||
f12123c0 | 3239 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
4da81684 HPN |
3240 | |
3241 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
3242 | ||
3243 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
3244 | ||
3245 | if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE) | |
3246 | fprintf (file, _(" [symbols have a _ prefix]")); | |
bac23f82 HPN |
3247 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) |
3248 | == EF_CRIS_VARIANT_COMMON_V10_V32) | |
3249 | fprintf (file, _(" [v10 and v32]")); | |
3250 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) | |
3251 | == EF_CRIS_VARIANT_V32) | |
3252 | fprintf (file, _(" [v32]")); | |
4da81684 HPN |
3253 | |
3254 | fputc ('\n', file); | |
b34976b6 | 3255 | return TRUE; |
4da81684 HPN |
3256 | } |
3257 | ||
3258 | /* Don't mix files with and without a leading underscore. */ | |
3259 | ||
b34976b6 | 3260 | static bfd_boolean |
4da81684 HPN |
3261 | cris_elf_merge_private_bfd_data (ibfd, obfd) |
3262 | bfd *ibfd; | |
3263 | bfd *obfd; | |
3264 | { | |
bac23f82 | 3265 | int imach, omach; |
4da81684 | 3266 | |
82e51918 | 3267 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 3268 | return FALSE; |
4da81684 HPN |
3269 | |
3270 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3271 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 3272 | return TRUE; |
4da81684 | 3273 | |
bac23f82 HPN |
3274 | imach = bfd_get_mach (ibfd); |
3275 | ||
4da81684 HPN |
3276 | if (! elf_flags_init (obfd)) |
3277 | { | |
3278 | /* This happens when ld starts out with a 'blank' output file. */ | |
b34976b6 | 3279 | elf_flags_init (obfd) = TRUE; |
4da81684 | 3280 | |
bac23f82 HPN |
3281 | /* We ignore the linker-set mach, and instead set it according to |
3282 | the first input file. This would also happen if we could | |
3283 | somehow filter out the OUTPUT_ARCH () setting from elf.sc. | |
3284 | This allows us to keep the same linker config across | |
3285 | cris(v0..v10) and crisv32. The drawback is that we can't force | |
3286 | the output type, which might be a sane thing to do for a | |
3287 | v10+v32 compatibility object. */ | |
3288 | if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
3289 | return FALSE; | |
4da81684 HPN |
3290 | } |
3291 | ||
bac23f82 HPN |
3292 | if (bfd_get_symbol_leading_char (ibfd) |
3293 | != bfd_get_symbol_leading_char (obfd)) | |
4da81684 HPN |
3294 | { |
3295 | (*_bfd_error_handler) | |
bac23f82 | 3296 | (bfd_get_symbol_leading_char (ibfd) == '_' |
d003868e AM |
3297 | ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols") |
3298 | : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"), | |
3299 | ibfd); | |
4da81684 | 3300 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3301 | return FALSE; |
4da81684 HPN |
3302 | } |
3303 | ||
bac23f82 HPN |
3304 | omach = bfd_get_mach (obfd); |
3305 | ||
3306 | if (imach != omach) | |
3307 | { | |
3308 | /* We can get an incompatible combination only if either is | |
3309 | bfd_mach_cris_v32, and the other one isn't compatible. */ | |
3310 | if ((imach == bfd_mach_cris_v32 | |
3311 | && omach != bfd_mach_cris_v10_v32) | |
3312 | || (omach == bfd_mach_cris_v32 | |
3313 | && imach != bfd_mach_cris_v10_v32)) | |
3314 | { | |
3315 | (*_bfd_error_handler) | |
3316 | ((imach == bfd_mach_cris_v32) | |
3317 | ? _("%B contains CRIS v32 code, incompatible" | |
3318 | " with previous objects") | |
3319 | : _("%B contains non-CRIS-v32 code, incompatible" | |
3320 | " with previous objects"), | |
3321 | ibfd); | |
3322 | bfd_set_error (bfd_error_bad_value); | |
3323 | return FALSE; | |
3324 | } | |
3325 | ||
3326 | /* We don't have to check the case where the input is compatible | |
3327 | with v10 and v32, because the output is already known to be set | |
3328 | to the other (compatible) mach. */ | |
3329 | if (omach == bfd_mach_cris_v10_v32 | |
3330 | && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
3331 | return FALSE; | |
3332 | } | |
3333 | ||
b34976b6 | 3334 | return TRUE; |
4da81684 | 3335 | } |
99e4ae17 | 3336 | |
bac23f82 HPN |
3337 | /* Do side-effects of e_flags copying to obfd. */ |
3338 | ||
3339 | static bfd_boolean | |
3340 | cris_elf_copy_private_bfd_data (ibfd, obfd) | |
3341 | bfd *ibfd; | |
3342 | bfd *obfd; | |
3343 | { | |
3344 | /* Call the base function. */ | |
3345 | if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd)) | |
3346 | return FALSE; | |
3347 | ||
3348 | /* If output is big-endian for some obscure reason, stop here. */ | |
3349 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE) | |
3350 | return FALSE; | |
3351 | ||
3352 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3353 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
3354 | return TRUE; | |
3355 | ||
3356 | /* Do what we really came here for. */ | |
3357 | return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd)); | |
3358 | } | |
99e4ae17 AJ |
3359 | |
3360 | static enum elf_reloc_type_class | |
f51e552e AM |
3361 | elf_cris_reloc_type_class (rela) |
3362 | const Elf_Internal_Rela *rela; | |
99e4ae17 | 3363 | { |
f51e552e | 3364 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
3365 | { |
3366 | case R_CRIS_RELATIVE: | |
3367 | return reloc_class_relative; | |
3368 | case R_CRIS_JUMP_SLOT: | |
3369 | return reloc_class_plt; | |
3370 | case R_CRIS_COPY: | |
3371 | return reloc_class_copy; | |
3372 | default: | |
3373 | return reloc_class_normal; | |
3374 | } | |
3375 | } | |
06c15ad7 HPN |
3376 | \f |
3377 | #define ELF_ARCH bfd_arch_cris | |
3378 | #define ELF_MACHINE_CODE EM_CRIS | |
3379 | #define ELF_MAXPAGESIZE 0x2000 | |
3380 | ||
3381 | #define TARGET_LITTLE_SYM bfd_elf32_cris_vec | |
3382 | #define TARGET_LITTLE_NAME "elf32-cris" | |
4da81684 | 3383 | #define elf_symbol_leading_char 0 |
06c15ad7 HPN |
3384 | |
3385 | #define elf_info_to_howto_rel NULL | |
3386 | #define elf_info_to_howto cris_info_to_howto_rela | |
3387 | #define elf_backend_relocate_section cris_elf_relocate_section | |
3388 | #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook | |
3389 | #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook | |
3390 | #define elf_backend_check_relocs cris_elf_check_relocs | |
72209a1f HPN |
3391 | #define elf_backend_grok_prstatus cris_elf_grok_prstatus |
3392 | #define elf_backend_grok_psinfo cris_elf_grok_psinfo | |
06c15ad7 HPN |
3393 | |
3394 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3395 | #define elf_backend_can_refcount 1 |
06c15ad7 | 3396 | |
4da81684 HPN |
3397 | #define elf_backend_object_p cris_elf_object_p |
3398 | #define elf_backend_final_write_processing \ | |
3399 | cris_elf_final_write_processing | |
3400 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
3401 | cris_elf_print_private_bfd_data | |
3402 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3403 | cris_elf_merge_private_bfd_data | |
bac23f82 HPN |
3404 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
3405 | cris_elf_copy_private_bfd_data | |
4da81684 | 3406 | |
06c15ad7 HPN |
3407 | #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup |
3408 | ||
915e5146 HPN |
3409 | #define bfd_elf32_bfd_link_hash_table_create \ |
3410 | elf_cris_link_hash_table_create | |
3411 | #define elf_backend_adjust_dynamic_symbol \ | |
3412 | elf_cris_adjust_dynamic_symbol | |
3413 | #define elf_backend_size_dynamic_sections \ | |
3414 | elf_cris_size_dynamic_sections | |
3415 | #define elf_backend_finish_dynamic_symbol \ | |
3416 | elf_cris_finish_dynamic_symbol | |
3417 | #define elf_backend_finish_dynamic_sections \ | |
3418 | elf_cris_finish_dynamic_sections | |
3419 | #define elf_backend_create_dynamic_sections \ | |
3420 | _bfd_elf_create_dynamic_sections | |
3421 | #define bfd_elf32_bfd_final_link \ | |
c152c796 | 3422 | bfd_elf_gc_common_final_link |
915e5146 | 3423 | #define elf_backend_hide_symbol elf_cris_hide_symbol |
99e4ae17 | 3424 | #define elf_backend_reloc_type_class elf_cris_reloc_type_class |
915e5146 HPN |
3425 | |
3426 | #define elf_backend_want_got_plt 1 | |
3427 | #define elf_backend_plt_readonly 1 | |
3428 | #define elf_backend_want_plt_sym 0 | |
3429 | #define elf_backend_got_header_size 12 | |
915e5146 | 3430 | |
06c15ad7 HPN |
3431 | /* Later, we my want to optimize RELA entries into REL entries for dynamic |
3432 | linking and libraries (if it's a win of any significance). Until then, | |
3433 | take the easy route. */ | |
3434 | #define elf_backend_may_use_rel_p 0 | |
3435 | #define elf_backend_may_use_rela_p 1 | |
f0fe0e16 | 3436 | #define elf_backend_rela_normal 1 |
06c15ad7 HPN |
3437 | |
3438 | #include "elf32-target.h" | |
4da81684 HPN |
3439 | |
3440 | #define INCLUDED_TARGET_FILE | |
3441 | ||
3442 | #undef TARGET_LITTLE_SYM | |
3443 | #undef TARGET_LITTLE_NAME | |
3444 | #undef elf_symbol_leading_char | |
3445 | ||
3446 | #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec | |
3447 | #define TARGET_LITTLE_NAME "elf32-us-cris" | |
3448 | #define elf_symbol_leading_char '_' | |
3449 | ||
3450 | #include "elf32-target.h" |