Commit | Line | Data |
---|---|---|
06c15ad7 | 1 | /* CRIS-specific support for 32-bit ELF. |
83bac4b0 | 2 | Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
3eb128b2 | 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 | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 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 | |
cd123cb7 NC |
22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
23 | MA 02110-1301, USA. */ | |
06c15ad7 | 24 | |
06c15ad7 | 25 | #include "sysdep.h" |
3db64b00 | 26 | #include "bfd.h" |
06c15ad7 HPN |
27 | #include "libbfd.h" |
28 | #include "elf-bfd.h" | |
29 | #include "elf/cris.h" | |
100382c7 | 30 | #include <limits.h> |
06c15ad7 HPN |
31 | |
32 | /* Forward declarations. */ | |
33 | static reloc_howto_type * cris_reloc_type_lookup | |
34 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
35 | ||
a7c10850 | 36 | static void cris_info_to_howto_rela |
947216bf | 37 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
06c15ad7 | 38 | |
bac23f82 HPN |
39 | static bfd_reloc_status_type cris_elf_pcrel_reloc |
40 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
41 | ||
b34976b6 | 42 | static bfd_boolean cris_elf_grok_prstatus |
72209a1f HPN |
43 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
44 | ||
b34976b6 | 45 | static bfd_boolean cris_elf_grok_psinfo |
72209a1f HPN |
46 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
47 | ||
b34976b6 | 48 | static bfd_boolean cris_elf_relocate_section |
06c15ad7 HPN |
49 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
50 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
51 | ||
52 | static bfd_reloc_status_type cris_final_link_relocate | |
53 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, | |
54 | Elf_Internal_Rela *, bfd_vma)); | |
55 | ||
b34976b6 | 56 | static bfd_boolean cris_elf_object_p PARAMS ((bfd *)); |
4da81684 | 57 | |
b34976b6 | 58 | static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean)); |
4da81684 | 59 | |
bac23f82 HPN |
60 | static bfd_boolean cris_elf_set_mach_from_flags |
61 | PARAMS ((bfd *, unsigned long int)); | |
62 | ||
b34976b6 | 63 | static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); |
4da81684 | 64 | |
b34976b6 | 65 | static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); |
bac23f82 | 66 | static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); |
4da81684 | 67 | |
915e5146 | 68 | struct elf_cris_link_hash_entry; |
b34976b6 | 69 | static bfd_boolean elf_cris_discard_excess_dso_dynamics |
4d96d128 | 70 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 71 | static bfd_boolean elf_cris_discard_excess_program_dynamics |
915e5146 | 72 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 73 | static bfd_boolean elf_cris_adjust_gotplt_to_got |
915e5146 | 74 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 75 | static bfd_boolean elf_cris_try_fold_plt_to_got |
915e5146 HPN |
76 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
77 | static struct bfd_hash_entry *elf_cris_link_hash_newfunc | |
78 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
79 | static struct bfd_link_hash_table *elf_cris_link_hash_table_create | |
80 | PARAMS ((bfd *)); | |
b34976b6 | 81 | static bfd_boolean elf_cris_adjust_dynamic_symbol |
915e5146 | 82 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 83 | static bfd_boolean cris_elf_check_relocs |
99c79b2e AJ |
84 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
85 | const Elf_Internal_Rela *)); | |
86 | ||
b34976b6 | 87 | static bfd_boolean elf_cris_size_dynamic_sections |
915e5146 | 88 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 89 | static bfd_boolean elf_cris_finish_dynamic_symbol |
915e5146 HPN |
90 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
91 | Elf_Internal_Sym *)); | |
b34976b6 | 92 | static bfd_boolean elf_cris_finish_dynamic_sections |
915e5146 HPN |
93 | PARAMS ((bfd *, struct bfd_link_info *)); |
94 | static void elf_cris_hide_symbol | |
b34976b6 | 95 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean)); |
99e4ae17 | 96 | static enum elf_reloc_type_class elf_cris_reloc_type_class |
f51e552e | 97 | PARAMS ((const Elf_Internal_Rela *)); |
915e5146 | 98 | |
06c15ad7 HPN |
99 | static reloc_howto_type cris_elf_howto_table [] = |
100 | { | |
101 | /* This reloc does nothing. */ | |
102 | HOWTO (R_CRIS_NONE, /* type */ | |
103 | 0, /* rightshift */ | |
104 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
105 | 32, /* bitsize */ | |
b34976b6 | 106 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
107 | 0, /* bitpos */ |
108 | complain_overflow_bitfield, /* complain_on_overflow */ | |
109 | bfd_elf_generic_reloc, /* special_function */ | |
110 | "R_CRIS_NONE", /* name */ | |
b34976b6 | 111 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
112 | 0, /* src_mask */ |
113 | 0, /* dst_mask */ | |
b34976b6 | 114 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
115 | |
116 | /* An 8 bit absolute relocation. */ | |
117 | HOWTO (R_CRIS_8, /* type */ | |
118 | 0, /* rightshift */ | |
119 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
120 | 8, /* bitsize */ | |
b34976b6 | 121 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
122 | 0, /* bitpos */ |
123 | complain_overflow_bitfield, /* complain_on_overflow */ | |
124 | bfd_elf_generic_reloc, /* special_function */ | |
125 | "R_CRIS_8", /* name */ | |
b34976b6 | 126 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
127 | 0x0000, /* src_mask */ |
128 | 0x00ff, /* dst_mask */ | |
b34976b6 | 129 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
130 | |
131 | /* A 16 bit absolute relocation. */ | |
132 | HOWTO (R_CRIS_16, /* type */ | |
133 | 0, /* rightshift */ | |
134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
135 | 16, /* bitsize */ | |
b34976b6 | 136 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
137 | 0, /* bitpos */ |
138 | complain_overflow_bitfield, /* complain_on_overflow */ | |
139 | bfd_elf_generic_reloc, /* special_function */ | |
140 | "R_CRIS_16", /* name */ | |
b34976b6 | 141 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
142 | 0x00000000, /* src_mask */ |
143 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 144 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
145 | |
146 | /* A 32 bit absolute relocation. */ | |
147 | HOWTO (R_CRIS_32, /* type */ | |
148 | 0, /* rightshift */ | |
149 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
150 | 32, /* bitsize */ | |
b34976b6 | 151 | FALSE, /* pc_relative */ |
06c15ad7 | 152 | 0, /* bitpos */ |
b2efcd36 HPN |
153 | /* We don't want overflow complaints for 64-bit vma builds |
154 | for e.g. sym+0x40000000 (or actually sym-0xc0000000 in | |
155 | 32-bit ELF) where sym=0xc0001234. | |
156 | Don't do this for the PIC relocs, as we don't expect to | |
157 | see them with large offsets. */ | |
158 | complain_overflow_dont, /* complain_on_overflow */ | |
06c15ad7 HPN |
159 | bfd_elf_generic_reloc, /* special_function */ |
160 | "R_CRIS_32", /* name */ | |
b34976b6 | 161 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
162 | 0x00000000, /* src_mask */ |
163 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 164 | FALSE), /* pcrel_offset */ |
06c15ad7 | 165 | |
915e5146 | 166 | /* An 8 bit PC-relative relocation. */ |
06c15ad7 HPN |
167 | HOWTO (R_CRIS_8_PCREL, /* type */ |
168 | 0, /* rightshift */ | |
169 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
170 | 8, /* bitsize */ | |
b34976b6 | 171 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
172 | 0, /* bitpos */ |
173 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 174 | cris_elf_pcrel_reloc, /* special_function */ |
06c15ad7 | 175 | "R_CRIS_8_PCREL", /* name */ |
b34976b6 | 176 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
177 | 0x0000, /* src_mask */ |
178 | 0x00ff, /* dst_mask */ | |
b34976b6 | 179 | TRUE), /* pcrel_offset */ |
06c15ad7 | 180 | |
915e5146 | 181 | /* A 16 bit PC-relative relocation. */ |
06c15ad7 HPN |
182 | HOWTO (R_CRIS_16_PCREL, /* type */ |
183 | 0, /* rightshift */ | |
184 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
185 | 16, /* bitsize */ | |
b34976b6 | 186 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
187 | 0, /* bitpos */ |
188 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 189 | cris_elf_pcrel_reloc, /* special_function */ |
44aa49bb | 190 | "R_CRIS_16_PCREL", /* name */ |
b34976b6 | 191 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
192 | 0x00000000, /* src_mask */ |
193 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 194 | TRUE), /* pcrel_offset */ |
06c15ad7 | 195 | |
915e5146 | 196 | /* A 32 bit PC-relative relocation. */ |
06c15ad7 HPN |
197 | HOWTO (R_CRIS_32_PCREL, /* type */ |
198 | 0, /* rightshift */ | |
199 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 32, /* bitsize */ | |
b34976b6 | 201 | TRUE, /* pc_relative */ |
06c15ad7 HPN |
202 | 0, /* bitpos */ |
203 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 204 | cris_elf_pcrel_reloc, /* special_function */ |
44aa49bb | 205 | "R_CRIS_32_PCREL", /* name */ |
b34976b6 | 206 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
207 | 0x00000000, /* src_mask */ |
208 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 209 | TRUE), /* pcrel_offset */ |
06c15ad7 | 210 | |
915e5146 HPN |
211 | /* GNU extension to record C++ vtable hierarchy. */ |
212 | HOWTO (R_CRIS_GNU_VTINHERIT, /* type */ | |
06c15ad7 HPN |
213 | 0, /* rightshift */ |
214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 0, /* bitsize */ | |
b34976b6 | 216 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
217 | 0, /* bitpos */ |
218 | complain_overflow_dont, /* complain_on_overflow */ | |
219 | NULL, /* special_function */ | |
220 | "R_CRIS_GNU_VTINHERIT", /* name */ | |
b34976b6 | 221 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
222 | 0, /* src_mask */ |
223 | 0, /* dst_mask */ | |
b34976b6 | 224 | FALSE), /* pcrel_offset */ |
06c15ad7 | 225 | |
915e5146 HPN |
226 | /* GNU extension to record C++ vtable member usage. */ |
227 | HOWTO (R_CRIS_GNU_VTENTRY, /* type */ | |
06c15ad7 HPN |
228 | 0, /* rightshift */ |
229 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
230 | 0, /* bitsize */ | |
b34976b6 | 231 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
232 | 0, /* bitpos */ |
233 | complain_overflow_dont, /* complain_on_overflow */ | |
234 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
235 | "R_CRIS_GNU_VTENTRY", /* name */ | |
b34976b6 | 236 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
237 | 0, /* src_mask */ |
238 | 0, /* dst_mask */ | |
b34976b6 | 239 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
240 | |
241 | /* This is used only by the dynamic linker. The symbol should exist | |
242 | both in the object being run and in some shared library. The | |
243 | dynamic linker copies the data addressed by the symbol from the | |
244 | shared library into the object, because the object being | |
245 | run has to have the data at some particular address. */ | |
246 | HOWTO (R_CRIS_COPY, /* type */ | |
247 | 0, /* rightshift */ | |
248 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
249 | 32, /* bitsize */ | |
b34976b6 | 250 | FALSE, /* pc_relative */ |
915e5146 HPN |
251 | 0, /* bitpos */ |
252 | complain_overflow_bitfield, /* complain_on_overflow */ | |
253 | bfd_elf_generic_reloc, /* special_function */ | |
254 | "R_CRIS_COPY", /* name */ | |
b34976b6 | 255 | FALSE, /* partial_inplace */ |
915e5146 HPN |
256 | 0, /* src_mask */ |
257 | 0, /* dst_mask */ | |
b34976b6 | 258 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
259 | |
260 | /* Like R_CRIS_32, but used when setting global offset table entries. */ | |
261 | HOWTO (R_CRIS_GLOB_DAT, /* type */ | |
262 | 0, /* rightshift */ | |
263 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
264 | 32, /* bitsize */ | |
b34976b6 | 265 | FALSE, /* pc_relative */ |
915e5146 HPN |
266 | 0, /* bitpos */ |
267 | complain_overflow_bitfield, /* complain_on_overflow */ | |
268 | bfd_elf_generic_reloc, /* special_function */ | |
269 | "R_CRIS_GLOB_DAT", /* name */ | |
b34976b6 | 270 | FALSE, /* partial_inplace */ |
915e5146 HPN |
271 | 0, /* src_mask */ |
272 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 273 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
274 | |
275 | /* Marks a procedure linkage table entry for a symbol. */ | |
276 | HOWTO (R_CRIS_JUMP_SLOT, /* type */ | |
277 | 0, /* rightshift */ | |
278 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
279 | 32, /* bitsize */ | |
b34976b6 | 280 | FALSE, /* pc_relative */ |
915e5146 HPN |
281 | 0, /* bitpos */ |
282 | complain_overflow_bitfield, /* complain_on_overflow */ | |
283 | bfd_elf_generic_reloc, /* special_function */ | |
284 | "R_CRIS_JUMP_SLOT", /* name */ | |
b34976b6 | 285 | FALSE, /* partial_inplace */ |
915e5146 HPN |
286 | 0, /* src_mask */ |
287 | 0, /* dst_mask */ | |
b34976b6 | 288 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
289 | |
290 | /* Used only by the dynamic linker. When the object is run, this | |
291 | longword is set to the load address of the object, plus the | |
292 | addend. */ | |
293 | HOWTO (R_CRIS_RELATIVE, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 32, /* bitsize */ | |
b34976b6 | 297 | FALSE, /* pc_relative */ |
915e5146 HPN |
298 | 0, /* bitpos */ |
299 | complain_overflow_bitfield, /* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_CRIS_RELATIVE", /* name */ | |
b34976b6 | 302 | FALSE, /* partial_inplace */ |
915e5146 HPN |
303 | 0, /* src_mask */ |
304 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
306 | |
307 | /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */ | |
308 | HOWTO (R_CRIS_16_GOT, /* type */ | |
309 | 0, /* rightshift */ | |
310 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 16, /* bitsize */ | |
b34976b6 | 312 | FALSE, /* pc_relative */ |
915e5146 HPN |
313 | 0, /* bitpos */ |
314 | complain_overflow_bitfield, /* complain_on_overflow */ | |
315 | bfd_elf_generic_reloc, /* special_function */ | |
316 | "R_CRIS_16_GOT", /* name */ | |
b34976b6 | 317 | FALSE, /* partial_inplace */ |
915e5146 HPN |
318 | 0, /* src_mask */ |
319 | 0xffff, /* dst_mask */ | |
b34976b6 | 320 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
321 | |
322 | HOWTO (R_CRIS_32_GOT, /* type */ | |
323 | 0, /* rightshift */ | |
324 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 32, /* bitsize */ | |
b34976b6 | 326 | FALSE, /* pc_relative */ |
915e5146 HPN |
327 | 0, /* bitpos */ |
328 | complain_overflow_bitfield, /* complain_on_overflow */ | |
329 | bfd_elf_generic_reloc, /* special_function */ | |
330 | "R_CRIS_32_GOT", /* name */ | |
b34976b6 | 331 | FALSE, /* partial_inplace */ |
915e5146 HPN |
332 | 0, /* src_mask */ |
333 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 334 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
335 | |
336 | /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of | |
337 | the GOT table for the symbol. */ | |
338 | HOWTO (R_CRIS_16_GOTPLT, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
b34976b6 | 342 | FALSE, /* pc_relative */ |
915e5146 HPN |
343 | 0, /* bitpos */ |
344 | complain_overflow_bitfield, /* complain_on_overflow */ | |
345 | bfd_elf_generic_reloc, /* special_function */ | |
346 | "R_CRIS_16_GOTPLT", /* name */ | |
b34976b6 | 347 | FALSE, /* partial_inplace */ |
915e5146 HPN |
348 | 0, /* src_mask */ |
349 | 0xffff, /* dst_mask */ | |
b34976b6 | 350 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
351 | |
352 | HOWTO (R_CRIS_32_GOTPLT, /* type */ | |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 32, /* bitsize */ | |
b34976b6 | 356 | FALSE, /* pc_relative */ |
915e5146 HPN |
357 | 0, /* bitpos */ |
358 | complain_overflow_bitfield, /* complain_on_overflow */ | |
359 | bfd_elf_generic_reloc, /* special_function */ | |
360 | "R_CRIS_32_GOTPLT", /* name */ | |
b34976b6 | 361 | FALSE, /* partial_inplace */ |
915e5146 HPN |
362 | 0, /* src_mask */ |
363 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 364 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
365 | |
366 | /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should | |
367 | be necessary. */ | |
368 | HOWTO (R_CRIS_32_GOTREL, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 32, /* bitsize */ | |
b34976b6 | 372 | FALSE, /* pc_relative */ |
915e5146 HPN |
373 | 0, /* bitpos */ |
374 | complain_overflow_bitfield, /* complain_on_overflow */ | |
375 | bfd_elf_generic_reloc, /* special_function */ | |
376 | "R_CRIS_32_GOTREL", /* name */ | |
b34976b6 | 377 | FALSE, /* partial_inplace */ |
915e5146 HPN |
378 | 0, /* src_mask */ |
379 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 380 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
381 | |
382 | /* A 32-bit offset from GOT to entry for this symbol in PLT and request | |
383 | to create PLT entry for symbol. */ | |
384 | HOWTO (R_CRIS_32_PLT_GOTREL, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 32, /* bitsize */ | |
b34976b6 | 388 | FALSE, /* pc_relative */ |
915e5146 HPN |
389 | 0, /* bitpos */ |
390 | complain_overflow_bitfield, /* complain_on_overflow */ | |
391 | bfd_elf_generic_reloc, /* special_function */ | |
392 | "R_CRIS_32_PLT_GOTREL", /* name */ | |
b34976b6 | 393 | FALSE, /* partial_inplace */ |
915e5146 HPN |
394 | 0, /* src_mask */ |
395 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 396 | FALSE), /* pcrel_offset */ |
915e5146 HPN |
397 | |
398 | /* A 32-bit offset from PC (location after the relocation) + addend to | |
399 | entry for this symbol in PLT and request to create PLT entry for | |
400 | symbol. */ | |
401 | HOWTO (R_CRIS_32_PLT_PCREL, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 32, /* bitsize */ | |
b34976b6 | 405 | TRUE, /* pc_relative */ |
915e5146 HPN |
406 | 0, /* bitpos */ |
407 | complain_overflow_bitfield, /* complain_on_overflow */ | |
bac23f82 | 408 | cris_elf_pcrel_reloc, /* special_function */ |
915e5146 | 409 | "R_CRIS_32_PLT_PCREL", /* name */ |
b34976b6 | 410 | FALSE, /* partial_inplace */ |
915e5146 HPN |
411 | 0, /* src_mask */ |
412 | 0xffffffff, /* dst_mask */ | |
3926fc54 HPN |
413 | TRUE), /* pcrel_offset */ |
414 | ||
415 | /* We don't handle these in any special manner and cross-format | |
416 | linking is not supported; just recognize them enough to pass them | |
417 | around. FIXME: do the same for most PIC relocs and add sanity | |
418 | tests to actually refuse gracefully to handle these and PIC | |
419 | relocs for cross-format linking. */ | |
420 | #define TLSHOWTO32(name) \ | |
421 | HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \ | |
422 | bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE) | |
100382c7 HPN |
423 | #define TLSHOWTO16X(name, X) \ |
424 | HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \ | |
3926fc54 | 425 | bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE) |
100382c7 HPN |
426 | #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned) |
427 | #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed) | |
3926fc54 HPN |
428 | |
429 | TLSHOWTO32 (R_CRIS_32_GOT_GD), | |
430 | TLSHOWTO16 (R_CRIS_16_GOT_GD), | |
431 | TLSHOWTO32 (R_CRIS_32_GD), | |
432 | TLSHOWTO32 (R_CRIS_DTP), | |
433 | TLSHOWTO32 (R_CRIS_32_DTPREL), | |
100382c7 | 434 | TLSHOWTO16S (R_CRIS_16_DTPREL), |
3926fc54 | 435 | TLSHOWTO32 (R_CRIS_32_GOT_TPREL), |
100382c7 | 436 | TLSHOWTO16S (R_CRIS_16_GOT_TPREL), |
3926fc54 | 437 | TLSHOWTO32 (R_CRIS_32_TPREL), |
100382c7 | 438 | TLSHOWTO16S (R_CRIS_16_TPREL), |
75f500d7 HPN |
439 | TLSHOWTO32 (R_CRIS_DTPMOD), |
440 | TLSHOWTO32 (R_CRIS_32_IE) | |
06c15ad7 HPN |
441 | }; |
442 | \f | |
443 | /* Map BFD reloc types to CRIS ELF reloc types. */ | |
444 | ||
445 | struct cris_reloc_map | |
446 | { | |
447 | bfd_reloc_code_real_type bfd_reloc_val; | |
448 | unsigned int cris_reloc_val; | |
449 | }; | |
450 | ||
451 | static const struct cris_reloc_map cris_reloc_map [] = | |
452 | { | |
453 | { BFD_RELOC_NONE, R_CRIS_NONE }, | |
454 | { BFD_RELOC_8, R_CRIS_8 }, | |
455 | { BFD_RELOC_16, R_CRIS_16 }, | |
456 | { BFD_RELOC_32, R_CRIS_32 }, | |
457 | { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL }, | |
458 | { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL }, | |
459 | { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL }, | |
460 | { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT }, | |
915e5146 HPN |
461 | { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY }, |
462 | { BFD_RELOC_CRIS_COPY, R_CRIS_COPY }, | |
463 | { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT }, | |
464 | { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT }, | |
465 | { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE }, | |
466 | { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT }, | |
467 | { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT }, | |
468 | { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT }, | |
469 | { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT }, | |
470 | { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL }, | |
471 | { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL }, | |
3926fc54 HPN |
472 | { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }, |
473 | { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD }, | |
474 | { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD }, | |
475 | { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD }, | |
476 | { BFD_RELOC_CRIS_DTP, R_CRIS_DTP }, | |
477 | { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL }, | |
478 | { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL }, | |
479 | { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL }, | |
480 | { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL }, | |
481 | { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL }, | |
482 | { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL }, | |
75f500d7 HPN |
483 | { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD }, |
484 | { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE } | |
06c15ad7 HPN |
485 | }; |
486 | ||
487 | static reloc_howto_type * | |
488 | cris_reloc_type_lookup (abfd, code) | |
489 | bfd * abfd ATTRIBUTE_UNUSED; | |
490 | bfd_reloc_code_real_type code; | |
491 | { | |
908d94bf | 492 | unsigned int i; |
06c15ad7 | 493 | |
908d94bf | 494 | for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++) |
06c15ad7 HPN |
495 | if (cris_reloc_map [i].bfd_reloc_val == code) |
496 | return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val]; | |
a7c10850 | 497 | |
06c15ad7 HPN |
498 | return NULL; |
499 | } | |
500 | ||
157090f7 AM |
501 | static reloc_howto_type * |
502 | cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
503 | { | |
504 | unsigned int i; | |
505 | ||
506 | for (i = 0; | |
507 | i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]); | |
508 | i++) | |
509 | if (cris_elf_howto_table[i].name != NULL | |
510 | && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0) | |
511 | return &cris_elf_howto_table[i]; | |
512 | ||
513 | return NULL; | |
514 | } | |
515 | ||
06c15ad7 HPN |
516 | /* Set the howto pointer for an CRIS ELF reloc. */ |
517 | ||
518 | static void | |
519 | cris_info_to_howto_rela (abfd, cache_ptr, dst) | |
520 | bfd * abfd ATTRIBUTE_UNUSED; | |
521 | arelent * cache_ptr; | |
947216bf | 522 | Elf_Internal_Rela * dst; |
06c15ad7 | 523 | { |
100382c7 | 524 | enum elf_cris_reloc_type r_type; |
06c15ad7 HPN |
525 | |
526 | r_type = ELF32_R_TYPE (dst->r_info); | |
527 | BFD_ASSERT (r_type < (unsigned int) R_CRIS_max); | |
528 | cache_ptr->howto = & cris_elf_howto_table [r_type]; | |
529 | } | |
bac23f82 HPN |
530 | |
531 | bfd_reloc_status_type | |
532 | cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
533 | output_bfd, error_message) | |
534 | bfd *abfd ATTRIBUTE_UNUSED; | |
535 | arelent *reloc_entry; | |
536 | asymbol *symbol; | |
537 | PTR data ATTRIBUTE_UNUSED; | |
538 | asection *input_section; | |
539 | bfd *output_bfd; | |
540 | char **error_message ATTRIBUTE_UNUSED; | |
541 | { | |
542 | /* By default (using only bfd_elf_generic_reloc when linking to | |
543 | non-ELF formats) PC-relative relocs are relative to the beginning | |
544 | of the reloc. CRIS PC-relative relocs are relative to the position | |
545 | *after* the reloc because that's what pre-CRISv32 PC points to | |
546 | after reading an insn field with that reloc. (For CRISv32, PC is | |
547 | actually relative to the start of the insn, but we keep the old | |
548 | definition.) Still, we use as much generic machinery as we can. | |
549 | ||
550 | Only adjust when doing a final link. */ | |
551 | if (output_bfd == (bfd *) NULL) | |
552 | reloc_entry->addend -= 1 << reloc_entry->howto->size; | |
553 | ||
554 | return | |
555 | bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
556 | input_section, output_bfd, error_message); | |
557 | } | |
06c15ad7 | 558 | \f |
bac23f82 HPN |
559 | /* Support for core dump NOTE sections. |
560 | The slightly unintuitive code layout is an attempt to keep at least | |
561 | some similarities with other ports, hoping to simplify general | |
562 | changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */ | |
72209a1f | 563 | |
b34976b6 | 564 | static bfd_boolean |
72209a1f HPN |
565 | cris_elf_grok_prstatus (abfd, note) |
566 | bfd *abfd; | |
567 | Elf_Internal_Note *note; | |
568 | { | |
569 | int offset; | |
eea6121a | 570 | size_t size; |
72209a1f | 571 | |
bac23f82 HPN |
572 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
573 | switch (note->descsz) | |
574 | { | |
575 | default: | |
576 | return FALSE; | |
577 | ||
578 | case 202: /* Linux/CRISv32 */ | |
579 | /* pr_cursig */ | |
580 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
581 | ||
582 | /* pr_pid */ | |
583 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22); | |
584 | ||
585 | /* pr_reg */ | |
586 | offset = 70; | |
587 | size = 128; | |
588 | ||
589 | break; | |
590 | } | |
591 | else | |
592 | switch (note->descsz) | |
593 | { | |
72209a1f | 594 | default: |
b34976b6 | 595 | return FALSE; |
72209a1f | 596 | |
bc0d28ee | 597 | case 214: /* Linux/CRIS */ |
72209a1f HPN |
598 | /* pr_cursig */ |
599 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
600 | ||
601 | /* pr_pid */ | |
602 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22); | |
603 | ||
604 | /* pr_reg */ | |
605 | offset = 70; | |
eea6121a | 606 | size = 140; |
72209a1f HPN |
607 | |
608 | break; | |
bac23f82 | 609 | } |
72209a1f HPN |
610 | |
611 | /* Make a ".reg/999" section. */ | |
612 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 613 | size, note->descpos + offset); |
72209a1f HPN |
614 | } |
615 | ||
b34976b6 | 616 | static bfd_boolean |
72209a1f HPN |
617 | cris_elf_grok_psinfo (abfd, note) |
618 | bfd *abfd; | |
619 | Elf_Internal_Note *note; | |
620 | { | |
bac23f82 HPN |
621 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
622 | switch (note->descsz) | |
623 | { | |
624 | default: | |
625 | return FALSE; | |
626 | ||
627 | case 124: /* Linux/CRISv32 elf_prpsinfo */ | |
628 | elf_tdata (abfd)->core_program | |
629 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
630 | elf_tdata (abfd)->core_command | |
631 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
632 | } | |
633 | else | |
634 | switch (note->descsz) | |
635 | { | |
72209a1f | 636 | default: |
b34976b6 | 637 | return FALSE; |
72209a1f HPN |
638 | |
639 | case 124: /* Linux/CRIS elf_prpsinfo */ | |
640 | elf_tdata (abfd)->core_program | |
bac23f82 | 641 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
72209a1f | 642 | elf_tdata (abfd)->core_command |
bac23f82 HPN |
643 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
644 | } | |
72209a1f HPN |
645 | |
646 | /* Note that for some reason, a spurious space is tacked | |
647 | onto the end of the args in some (at least one anyway) | |
648 | implementations, so strip it off if it exists. */ | |
649 | ||
650 | { | |
651 | char *command = elf_tdata (abfd)->core_command; | |
652 | int n = strlen (command); | |
653 | ||
654 | if (0 < n && command[n - 1] == ' ') | |
655 | command[n - 1] = '\0'; | |
656 | } | |
657 | ||
b34976b6 | 658 | return TRUE; |
72209a1f HPN |
659 | } |
660 | \f | |
915e5146 HPN |
661 | /* The name of the dynamic interpreter. This is put in the .interp |
662 | section. */ | |
663 | ||
664 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
665 | ||
666 | /* The size in bytes of an entry in the procedure linkage table. */ | |
667 | ||
668 | #define PLT_ENTRY_SIZE 20 | |
bac23f82 | 669 | #define PLT_ENTRY_SIZE_V32 26 |
915e5146 HPN |
670 | |
671 | /* The first entry in an absolute procedure linkage table looks like this. */ | |
672 | ||
673 | static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] = | |
674 | { | |
675 | 0xfc, 0xe1, | |
cedb70c5 | 676 | 0x7e, 0x7e, /* push mof. */ |
915e5146 HPN |
677 | 0x7f, 0x0d, /* (dip [pc+]) */ |
678 | 0, 0, 0, 0, /* Replaced with address of .got + 4. */ | |
679 | 0x30, 0x7a, /* move [...],mof */ | |
680 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
681 | 0, 0, 0, 0, /* Replaced with address of .got + 8. */ | |
bac23f82 HPN |
682 | 0x30, 0x09 /* jump [...] */ |
683 | }; | |
684 | ||
685 | static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = | |
686 | { | |
687 | 0x84, 0xe2, /* subq 4,$sp */ | |
688 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
689 | 0, 0, 0, 0, /* Replaced by address of .got + 4. */ | |
690 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
691 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
692 | 0x04, 0xf2, /* addq 4,acr */ | |
693 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
694 | 0xbf, 0x09, /* jump $acr */ | |
695 | 0xb0, 0x05, /* nop */ | |
696 | 0, 0 /* Pad out to 26 bytes. */ | |
915e5146 HPN |
697 | }; |
698 | ||
699 | /* Subsequent entries in an absolute procedure linkage table look like | |
700 | this. */ | |
701 | ||
702 | static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] = | |
703 | { | |
704 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
705 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
706 | 0x30, 0x09, /* jump [...] */ | |
707 | 0x3f, 0x7e, /* move [pc+],mof */ | |
708 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
709 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
710 | 0xec, 0xff, | |
711 | 0xff, 0xff /* Replaced with offset to start of .plt. */ | |
712 | }; | |
713 | ||
bac23f82 HPN |
714 | static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] = |
715 | { | |
716 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
717 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
718 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
719 | 0xbf, 0x09, /* jump $acr */ | |
720 | 0xb0, 0x05, /* nop */ | |
721 | 0x3f, 0x7e, /* move 0,mof */ | |
722 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
723 | 0xbf, 0x0e, /* ba start_of_plt0_entry */ | |
724 | 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */ | |
725 | 0xb0, 0x05 /* nop */ | |
726 | }; | |
727 | ||
915e5146 HPN |
728 | /* The first entry in a PIC procedure linkage table looks like this. */ |
729 | ||
730 | static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
731 | { | |
732 | 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */ | |
733 | 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */ | |
734 | 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */ | |
735 | 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */ | |
736 | }; | |
737 | ||
bac23f82 HPN |
738 | static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = |
739 | { | |
740 | 0x84, 0xe2, /* subq 4,$sp */ | |
741 | 0x04, 0x01, /* addoq 4,$r0,$acr */ | |
742 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
743 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
744 | 0x04, 0xf2, /* addq 4,$acr */ | |
745 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
746 | 0xbf, 0x09, /* jump $acr */ | |
747 | 0xb0, 0x05, /* nop */ | |
748 | 0, 0, /* Pad out to 26 bytes. */ | |
749 | 0, 0, 0, 0, | |
750 | 0, 0, 0, 0 | |
751 | }; | |
752 | ||
915e5146 HPN |
753 | /* Subsequent entries in a PIC procedure linkage table look like this. */ |
754 | ||
755 | static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] = | |
756 | { | |
757 | 0x6f, 0x0d, /* (bdap [pc+].d,r0) */ | |
758 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
759 | 0x30, 0x09, /* jump [...] */ | |
760 | 0x3f, 0x7e, /* move [pc+],mof */ | |
761 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
762 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
763 | 0xec, 0xff, /* Replaced with offset to start of .plt. */ | |
764 | 0xff, 0xff | |
765 | }; | |
bac23f82 HPN |
766 | |
767 | static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] = | |
768 | { | |
769 | 0x6f, 0x0d, /* addo.d 0,$r0,$acr */ | |
770 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
771 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
772 | 0xbf, 0x09, /* jump $acr */ | |
773 | 0xb0, 0x05, /* nop */ | |
774 | 0x3f, 0x7e, /* move relocoffs,$mof */ | |
775 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
776 | 0xbf, 0x0e, /* ba start_of_plt */ | |
777 | 0, 0, 0, 0, /* Replaced with offset to start of .plt. */ | |
778 | 0xb0, 0x05 /* nop */ | |
779 | }; | |
915e5146 HPN |
780 | \f |
781 | /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits | |
782 | (and most other PIC/shlib stuff). Check that we don't drift away | |
783 | without reason. | |
784 | ||
785 | The CRIS linker, like the m68k and i386 linkers (and probably the rest | |
786 | too) needs to keep track of the number of relocs that it decides to | |
787 | copy in check_relocs for each symbol. This is so that it can discard | |
788 | PC relative relocs if it doesn't need them when linking with | |
789 | -Bsymbolic. We store the information in a field extending the regular | |
790 | ELF linker hash table. */ | |
791 | ||
792 | /* This structure keeps track of the number of PC relative relocs we have | |
793 | copied for a given symbol. */ | |
794 | ||
795 | struct elf_cris_pcrel_relocs_copied | |
796 | { | |
797 | /* Next section. */ | |
798 | struct elf_cris_pcrel_relocs_copied *next; | |
0d08de41 | 799 | |
915e5146 HPN |
800 | /* A section in dynobj. */ |
801 | asection *section; | |
0d08de41 | 802 | |
915e5146 HPN |
803 | /* Number of relocs copied in this section. */ |
804 | bfd_size_type count; | |
0d08de41 HPN |
805 | |
806 | /* Example of reloc being copied, for message. */ | |
807 | enum elf_cris_reloc_type r_type; | |
915e5146 HPN |
808 | }; |
809 | ||
810 | /* CRIS ELF linker hash entry. */ | |
811 | ||
812 | struct elf_cris_link_hash_entry | |
813 | { | |
814 | struct elf_link_hash_entry root; | |
815 | ||
816 | /* Number of PC relative relocs copied for this symbol. */ | |
817 | struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied; | |
818 | ||
819 | /* The GOTPLT references are CRIS-specific; the goal is to avoid having | |
820 | both a general GOT and a PLT-specific GOT entry for the same symbol, | |
821 | when it is referenced both as a function and as a function pointer. | |
822 | ||
823 | Number of GOTPLT references for a function. */ | |
824 | bfd_signed_vma gotplt_refcount; | |
825 | ||
826 | /* Actual GOTPLT index for this symbol, if applicable, or zero if not | |
827 | (zero is never used as an index). FIXME: We should be able to fold | |
828 | this with gotplt_refcount in a union, like the got and plt unions in | |
829 | elf_link_hash_entry. */ | |
830 | bfd_size_type gotplt_offset; | |
100382c7 HPN |
831 | |
832 | /* The root.got.refcount is the sum of the regular reference counts | |
833 | (this) and those members below. We have to keep a separate count | |
834 | to track when we've found the first (or last) reference to a | |
835 | regular got entry. The offset is in root.got.offset. */ | |
836 | bfd_signed_vma reg_got_refcount; | |
837 | ||
838 | /* Similar to the above, the number of reloc references to this | |
839 | symbols that need a R_CRIS_32_TPREL slot. The offset is in | |
840 | root.got.offset, because this and .dtp_refcount can't validly | |
841 | happen when there's also a regular GOT entry; that's invalid | |
842 | input for which an error is emitted. */ | |
843 | bfd_signed_vma tprel_refcount; | |
844 | ||
845 | /* Similar to the above, the number of reloc references to this | |
846 | symbols that need a R_CRIS_DTP slot. The offset is in | |
847 | root.got.offset; plus 4 if .tprel_refcount > 0. */ | |
848 | bfd_signed_vma dtp_refcount; | |
915e5146 HPN |
849 | }; |
850 | ||
100382c7 HPN |
851 | /* The local_got_refcounts and local_got_offsets are a multiple of |
852 | LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the | |
853 | refcount for GOT itself, see code), with the summary / group offset | |
854 | for local symbols located at offset N, reference counts for | |
855 | ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP | |
856 | relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N + | |
857 | 3*LSNUM. */ | |
858 | ||
859 | #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info) | |
860 | #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info) | |
861 | #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info) | |
862 | #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4) | |
863 | ||
915e5146 HPN |
864 | /* CRIS ELF linker hash table. */ |
865 | ||
866 | struct elf_cris_link_hash_table | |
867 | { | |
868 | struct elf_link_hash_table root; | |
869 | ||
870 | /* We can't use the PLT offset and calculate to get the GOTPLT offset, | |
871 | since we try and avoid creating GOTPLT:s when there's already a GOT. | |
872 | Instead, we keep and update the next available index here. */ | |
873 | bfd_size_type next_gotplt_entry; | |
100382c7 HPN |
874 | |
875 | /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have | |
876 | been seen for any input; if != 0, then the constant-offset | |
877 | R_CRIS_DTPMOD is needed for this DSO/executable. This turns | |
878 | negative at relocation, so that we don't need an extra flag for | |
879 | when the reloc is output. */ | |
880 | bfd_signed_vma dtpmod_refcount; | |
915e5146 HPN |
881 | }; |
882 | ||
883 | /* Traverse a CRIS ELF linker hash table. */ | |
884 | ||
885 | #define elf_cris_link_hash_traverse(table, func, info) \ | |
886 | (elf_link_hash_traverse \ | |
887 | (&(table)->root, \ | |
b34976b6 | 888 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
915e5146 HPN |
889 | (info))) |
890 | ||
891 | /* Get the CRIS ELF linker hash table from a link_info structure. */ | |
892 | ||
893 | #define elf_cris_hash_table(p) \ | |
894 | ((struct elf_cris_link_hash_table *) (p)->hash) | |
895 | ||
100382c7 HPN |
896 | /* Get the CRIS ELF linker hash entry from a regular hash entry (the |
897 | "parent class"). The .root reference is just a simple type | |
898 | check on the argument. */ | |
899 | ||
900 | #define elf_cris_hash_entry(p) \ | |
901 | ((struct elf_cris_link_hash_entry *) (&(p)->root)) | |
902 | ||
915e5146 HPN |
903 | /* Create an entry in a CRIS ELF linker hash table. */ |
904 | ||
905 | static struct bfd_hash_entry * | |
906 | elf_cris_link_hash_newfunc (entry, table, string) | |
907 | struct bfd_hash_entry *entry; | |
908 | struct bfd_hash_table *table; | |
909 | const char *string; | |
910 | { | |
911 | struct elf_cris_link_hash_entry *ret = | |
912 | (struct elf_cris_link_hash_entry *) entry; | |
913 | ||
914 | /* Allocate the structure if it has not already been allocated by a | |
915 | subclass. */ | |
916 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
917 | ret = ((struct elf_cris_link_hash_entry *) | |
918 | bfd_hash_allocate (table, | |
919 | sizeof (struct elf_cris_link_hash_entry))); | |
920 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
921 | return (struct bfd_hash_entry *) ret; | |
922 | ||
923 | /* Call the allocation method of the superclass. */ | |
924 | ret = ((struct elf_cris_link_hash_entry *) | |
925 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
926 | table, string)); | |
927 | if (ret != (struct elf_cris_link_hash_entry *) NULL) | |
928 | { | |
929 | ret->pcrel_relocs_copied = NULL; | |
930 | ret->gotplt_refcount = 0; | |
931 | ret->gotplt_offset = 0; | |
100382c7 HPN |
932 | ret->dtp_refcount = 0; |
933 | ret->tprel_refcount = 0; | |
934 | ret->reg_got_refcount = 0; | |
915e5146 HPN |
935 | } |
936 | ||
937 | return (struct bfd_hash_entry *) ret; | |
938 | } | |
939 | ||
940 | /* Create a CRIS ELF linker hash table. */ | |
941 | ||
942 | static struct bfd_link_hash_table * | |
943 | elf_cris_link_hash_table_create (abfd) | |
944 | bfd *abfd; | |
945 | { | |
946 | struct elf_cris_link_hash_table *ret; | |
dc810e39 | 947 | bfd_size_type amt = sizeof (struct elf_cris_link_hash_table); |
915e5146 | 948 | |
e2d34d7d | 949 | ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt)); |
915e5146 HPN |
950 | if (ret == (struct elf_cris_link_hash_table *) NULL) |
951 | return NULL; | |
952 | ||
66eb6687 AM |
953 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
954 | elf_cris_link_hash_newfunc, | |
955 | sizeof (struct elf_cris_link_hash_entry))) | |
915e5146 | 956 | { |
e2d34d7d | 957 | free (ret); |
915e5146 HPN |
958 | return NULL; |
959 | } | |
960 | ||
961 | /* Initialize to skip over the first three entries in the gotplt; they | |
962 | are used for run-time symbol evaluation. */ | |
963 | ret->next_gotplt_entry = 12; | |
964 | ||
100382c7 HPN |
965 | /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */ |
966 | ret->dtpmod_refcount = 0; | |
967 | ||
915e5146 HPN |
968 | return &ret->root.root; |
969 | } | |
970 | \f | |
06c15ad7 | 971 | /* Perform a single relocation. By default we use the standard BFD |
915e5146 | 972 | routines, with a few tweaks. */ |
06c15ad7 HPN |
973 | |
974 | static bfd_reloc_status_type | |
975 | cris_final_link_relocate (howto, input_bfd, input_section, contents, rel, | |
976 | relocation) | |
977 | reloc_howto_type * howto; | |
978 | bfd * input_bfd; | |
979 | asection * input_section; | |
980 | bfd_byte * contents; | |
981 | Elf_Internal_Rela * rel; | |
982 | bfd_vma relocation; | |
983 | { | |
915e5146 | 984 | bfd_reloc_status_type r; |
100382c7 | 985 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); |
915e5146 HPN |
986 | |
987 | /* PC-relative relocations are relative to the position *after* | |
988 | the reloc. Note that for R_CRIS_8_PCREL the adjustment is | |
989 | not a single byte, since PC must be 16-bit-aligned. */ | |
100382c7 | 990 | switch (r_type) |
915e5146 HPN |
991 | { |
992 | /* Check that the 16-bit GOT relocs are positive. */ | |
993 | case R_CRIS_16_GOTPLT: | |
994 | case R_CRIS_16_GOT: | |
995 | if ((bfd_signed_vma) relocation < 0) | |
996 | return bfd_reloc_overflow; | |
997 | break; | |
998 | ||
999 | case R_CRIS_32_PLT_PCREL: | |
1000 | case R_CRIS_32_PCREL: | |
1001 | relocation -= 2; | |
1002 | /* Fall through. */ | |
1003 | case R_CRIS_8_PCREL: | |
1004 | case R_CRIS_16_PCREL: | |
1005 | relocation -= 2; | |
1006 | break; | |
1007 | ||
1008 | default: | |
1009 | break; | |
1010 | } | |
1011 | ||
1012 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
06c15ad7 HPN |
1013 | contents, rel->r_offset, |
1014 | relocation, rel->r_addend); | |
1015 | return r; | |
1016 | } | |
1017 | \f | |
100382c7 HPN |
1018 | |
1019 | /* The number of errors left before we stop outputting reloc-specific | |
1020 | explanatory messages. By coincidence, this works nicely together | |
1021 | with the default number of messages you'll get from LD about | |
1022 | "relocation truncated to fit" messages before you get an | |
1023 | "additional relocation overflows omitted from the output". */ | |
1024 | static int additional_relocation_error_msg_count = 10; | |
1025 | ||
06c15ad7 HPN |
1026 | /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was |
1027 | copied, for further comments. */ | |
1028 | ||
b34976b6 | 1029 | static bfd_boolean |
06c15ad7 HPN |
1030 | cris_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
1031 | contents, relocs, local_syms, local_sections) | |
b34976b6 AM |
1032 | bfd *output_bfd ATTRIBUTE_UNUSED; |
1033 | struct bfd_link_info *info; | |
1034 | bfd *input_bfd; | |
1035 | asection *input_section; | |
1036 | bfd_byte *contents; | |
1037 | Elf_Internal_Rela *relocs; | |
1038 | Elf_Internal_Sym *local_syms; | |
1039 | asection **local_sections; | |
06c15ad7 | 1040 | { |
915e5146 | 1041 | bfd *dynobj; |
b34976b6 AM |
1042 | Elf_Internal_Shdr *symtab_hdr; |
1043 | struct elf_link_hash_entry **sym_hashes; | |
915e5146 HPN |
1044 | bfd_vma *local_got_offsets; |
1045 | asection *sgot; | |
1046 | asection *splt; | |
1047 | asection *sreloc; | |
b34976b6 AM |
1048 | Elf_Internal_Rela *rel; |
1049 | Elf_Internal_Rela *relend; | |
100382c7 | 1050 | asection *srelgot; |
06c15ad7 | 1051 | |
915e5146 HPN |
1052 | dynobj = elf_hash_table (info)->dynobj; |
1053 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
06c15ad7 HPN |
1054 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
1055 | sym_hashes = elf_sym_hashes (input_bfd); | |
1056 | relend = relocs + input_section->reloc_count; | |
1057 | ||
915e5146 HPN |
1058 | sgot = NULL; |
1059 | splt = NULL; | |
1060 | sreloc = NULL; | |
100382c7 | 1061 | srelgot = NULL; |
915e5146 HPN |
1062 | |
1063 | if (dynobj != NULL) | |
1064 | { | |
1065 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1066 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1067 | } | |
1068 | ||
06c15ad7 HPN |
1069 | for (rel = relocs; rel < relend; rel ++) |
1070 | { | |
b34976b6 AM |
1071 | reloc_howto_type *howto; |
1072 | unsigned long r_symndx; | |
1073 | Elf_Internal_Sym *sym; | |
1074 | asection *sec; | |
1075 | struct elf_link_hash_entry *h; | |
1076 | bfd_vma relocation; | |
1077 | bfd_reloc_status_type r; | |
1078 | const char *symname = NULL; | |
100382c7 | 1079 | enum elf_cris_reloc_type r_type; |
a7c10850 | 1080 | |
06c15ad7 | 1081 | r_type = ELF32_R_TYPE (rel->r_info); |
a7c10850 | 1082 | |
06c15ad7 HPN |
1083 | if ( r_type == R_CRIS_GNU_VTINHERIT |
1084 | || r_type == R_CRIS_GNU_VTENTRY) | |
1085 | continue; | |
a7c10850 | 1086 | |
f0fe0e16 | 1087 | r_symndx = ELF32_R_SYM (rel->r_info); |
915e5146 | 1088 | howto = cris_elf_howto_table + r_type; |
06c15ad7 HPN |
1089 | h = NULL; |
1090 | sym = NULL; | |
1091 | sec = NULL; | |
a7c10850 | 1092 | |
06c15ad7 HPN |
1093 | if (r_symndx < symtab_hdr->sh_info) |
1094 | { | |
1095 | sym = local_syms + r_symndx; | |
1096 | sec = local_sections [r_symndx]; | |
8517fae7 | 1097 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
a7c10850 | 1098 | |
dc810e39 AM |
1099 | symname = (bfd_elf_string_from_elf_section |
1100 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1101 | if (symname == NULL) | |
1102 | symname = bfd_section_name (input_bfd, sec); | |
06c15ad7 HPN |
1103 | } |
1104 | else | |
1105 | { | |
560e09e9 NC |
1106 | bfd_boolean warned; |
1107 | bfd_boolean unresolved_reloc; | |
0a4787a0 | 1108 | |
b2a8e766 AM |
1109 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
1110 | r_symndx, symtab_hdr, sym_hashes, | |
1111 | h, sec, relocation, | |
1112 | unresolved_reloc, warned); | |
915e5146 | 1113 | |
100382c7 HPN |
1114 | symname = h->root.root.string; |
1115 | ||
560e09e9 | 1116 | if (unresolved_reloc |
915e5146 HPN |
1117 | /* Perhaps we should detect the cases that |
1118 | sec->output_section is expected to be NULL like i386 and | |
1119 | m68k, but apparently (and according to elfxx-ia64.c) all | |
1120 | valid cases are where the symbol is defined in a shared | |
1121 | object which we link dynamically against. This includes | |
1122 | PLT relocs for which we've created a PLT entry and other | |
1123 | relocs for which we're prepared to create dynamic | |
1124 | relocations. | |
1125 | ||
1126 | For now, new situations cause us to just err when | |
1127 | sec->output_offset is NULL but the object with the symbol | |
1128 | is *not* dynamically linked against. Thus this will | |
1129 | automatically remind us so we can see if there are other | |
1130 | valid cases we need to revisit. */ | |
560e09e9 NC |
1131 | && (sec->owner->flags & DYNAMIC) != 0) |
1132 | relocation = 0; | |
1133 | ||
1134 | else if (h->root.type == bfd_link_hash_defined | |
1135 | || h->root.type == bfd_link_hash_defweak) | |
1136 | { | |
1137 | /* Here follow the cases where the relocation value must | |
1138 | be zero (or when further handling is simplified when | |
1139 | zero). I can't claim to understand the various | |
1140 | conditions and they weren't described in the files | |
1141 | where I copied them from (elf32-m68k.c and | |
1142 | elf32-i386.c), but let's mention examples of where | |
1143 | they happen. FIXME: Perhaps define and use a | |
1144 | dynamic_symbol_p function like ia64. | |
1145 | ||
1146 | - When creating a shared library, we can have an | |
1147 | ordinary relocation for a symbol defined in a shared | |
1148 | library (perhaps the one we create). We then make | |
1149 | the relocation value zero, as the value seen now will | |
1150 | be added into the relocation addend in this shared | |
1151 | library, but must be handled only at dynamic-link | |
1152 | time. FIXME: Not sure this example covers the | |
1153 | h->elf_link_hash_flags test, though it's there in | |
1154 | other targets. */ | |
1155 | if (info->shared | |
1156 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1157 | || !h->def_regular) |
560e09e9 NC |
1158 | && (input_section->flags & SEC_ALLOC) != 0 |
1159 | && (r_type == R_CRIS_8 | |
1160 | || r_type == R_CRIS_16 | |
1161 | || r_type == R_CRIS_32 | |
1162 | || r_type == R_CRIS_8_PCREL | |
1163 | || r_type == R_CRIS_16_PCREL | |
1164 | || r_type == R_CRIS_32_PCREL)) | |
915e5146 | 1165 | relocation = 0; |
ab96bf03 | 1166 | else if (!info->relocatable && unresolved_reloc) |
915e5146 | 1167 | { |
560e09e9 | 1168 | _bfd_error_handler |
bac23f82 | 1169 | (_("%B, section %A: unresolvable relocation %s against symbol `%s'"), |
d003868e AM |
1170 | input_bfd, |
1171 | input_section, | |
8f615d07 | 1172 | cris_elf_howto_table[r_type].name, |
d003868e | 1173 | symname); |
915e5146 | 1174 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1175 | return FALSE; |
915e5146 | 1176 | } |
06c15ad7 | 1177 | } |
06c15ad7 | 1178 | } |
a7c10850 | 1179 | |
ab96bf03 AM |
1180 | if (sec != NULL && elf_discarded_section (sec)) |
1181 | { | |
1182 | /* For relocs against symbols from removed linkonce sections, | |
1183 | or sections discarded by a linker script, we just want the | |
1184 | section contents zeroed. Avoid any special processing. */ | |
1185 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
1186 | rel->r_info = 0; | |
1187 | rel->r_addend = 0; | |
1188 | continue; | |
1189 | } | |
1190 | ||
1191 | if (info->relocatable) | |
1192 | continue; | |
1193 | ||
915e5146 | 1194 | switch (r_type) |
06c15ad7 | 1195 | { |
915e5146 HPN |
1196 | case R_CRIS_16_GOTPLT: |
1197 | case R_CRIS_32_GOTPLT: | |
1198 | /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT, | |
1199 | but we require a PLT, and the PLT handling will take care of | |
1200 | filling in the PLT-specific GOT entry. For the GOT offset, | |
1201 | calculate it as we do when filling it in for the .got.plt | |
1202 | section. If we don't have a PLT, punt to GOT handling. */ | |
1203 | if (h != NULL | |
1204 | && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0) | |
06c15ad7 | 1205 | { |
915e5146 HPN |
1206 | asection *sgotplt |
1207 | = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1208 | bfd_vma got_offset; | |
a7c10850 | 1209 | |
915e5146 HPN |
1210 | BFD_ASSERT (h->dynindx != -1); |
1211 | BFD_ASSERT (sgotplt != NULL); | |
a7c10850 | 1212 | |
915e5146 HPN |
1213 | got_offset |
1214 | = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; | |
06c15ad7 | 1215 | |
915e5146 | 1216 | relocation = got_offset; |
06c15ad7 | 1217 | break; |
915e5146 | 1218 | } |
06c15ad7 | 1219 | |
4d96d128 | 1220 | /* We didn't make a PLT entry for this symbol. Maybe everything is |
915e5146 HPN |
1221 | folded into the GOT. Other than folding, this happens when |
1222 | statically linking PIC code, or when using -Bsymbolic. Check | |
1223 | that we instead have a GOT entry as done for us by | |
1224 | elf_cris_adjust_dynamic_symbol, and drop through into the | |
e4a2175c HPN |
1225 | ordinary GOT cases. This must not happen for the |
1226 | executable, because any reference it does to a function | |
1227 | that is satisfied by a DSO must generate a PLT. We assume | |
1228 | these call-specific relocs don't address non-functions. */ | |
1229 | if (h != NULL | |
1230 | && (h->got.offset == (bfd_vma) -1 | |
1231 | || (!info->shared | |
f5385ebf AM |
1232 | && !(h->def_regular |
1233 | || (!h->def_dynamic | |
1234 | && h->root.type == bfd_link_hash_undefweak))))) | |
915e5146 HPN |
1235 | { |
1236 | (*_bfd_error_handler) | |
e4a2175c | 1237 | ((h->got.offset == (bfd_vma) -1) |
bac23f82 | 1238 | ? _("%B, section %A: No PLT nor GOT for relocation %s" |
d003868e | 1239 | " against symbol `%s'") |
bac23f82 | 1240 | : _("%B, section %A: No PLT for relocation %s" |
d003868e AM |
1241 | " against symbol `%s'"), |
1242 | input_bfd, | |
1243 | input_section, | |
915e5146 | 1244 | cris_elf_howto_table[r_type].name, |
ada1953e HPN |
1245 | (symname != NULL && symname[0] != '\0' |
1246 | ? symname : _("[whose name is lost]"))); | |
915e5146 HPN |
1247 | |
1248 | /* FIXME: Perhaps blaming input is not the right thing to | |
1249 | do; this is probably an internal error. But it is true | |
1250 | that we didn't like that particular input. */ | |
1251 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1252 | return FALSE; |
915e5146 HPN |
1253 | } |
1254 | /* Fall through. */ | |
1255 | ||
1256 | /* The size of the actual relocation is not used here; we only | |
1257 | fill in the GOT table here. */ | |
1258 | case R_CRIS_16_GOT: | |
1259 | case R_CRIS_32_GOT: | |
1260 | { | |
1261 | bfd_vma off; | |
1262 | ||
1263 | /* Note that despite using RELA relocations, the .got contents | |
1264 | is always filled in with the link-relative relocation | |
1265 | value; the addend. */ | |
1266 | ||
1267 | if (h != NULL) | |
1268 | { | |
1269 | off = h->got.offset; | |
1270 | BFD_ASSERT (off != (bfd_vma) -1); | |
1271 | ||
1272 | if (!elf_hash_table (info)->dynamic_sections_created | |
205cfeb0 | 1273 | || (! info->shared |
f5385ebf | 1274 | && (h->def_regular |
e4a2175c | 1275 | || h->type == STT_FUNC |
f5385ebf | 1276 | || h->needs_plt)) |
915e5146 HPN |
1277 | || (info->shared |
1278 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 1279 | && h->def_regular)) |
915e5146 | 1280 | { |
4d96d128 | 1281 | /* This wasn't checked above for ! info->shared, but |
e4a2175c HPN |
1282 | must hold there if we get here; the symbol must |
1283 | be defined in the regular program or be undefweak | |
1284 | or be a function or otherwise need a PLT. */ | |
6849c52f HPN |
1285 | BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created |
1286 | || info->shared | |
f5385ebf | 1287 | || h->def_regular |
e4a2175c | 1288 | || h->type == STT_FUNC |
f5385ebf | 1289 | || h->needs_plt |
6849c52f | 1290 | || h->root.type == bfd_link_hash_undefweak); |
4d96d128 | 1291 | |
915e5146 | 1292 | /* This is actually a static link, or it is a |
6849c52f HPN |
1293 | -Bsymbolic link and the symbol is defined locally, |
1294 | or is undefweak, or the symbol was forced to be | |
1295 | local because of a version file, or we're not | |
1296 | creating a dynamic object. We must initialize this | |
1297 | entry in the global offset table. Since the offset | |
1298 | must always be a multiple of 4, we use the least | |
1299 | significant bit to record whether we have | |
1300 | initialized it already. | |
1301 | ||
1302 | If this GOT entry should be runtime-initialized, we | |
1303 | will create a .rela.got relocation entry to | |
1304 | initialize the value. This is done in the | |
1305 | finish_dynamic_symbol routine. */ | |
915e5146 HPN |
1306 | if ((off & 1) != 0) |
1307 | off &= ~1; | |
1308 | else | |
1309 | { | |
1310 | bfd_put_32 (output_bfd, relocation, | |
1311 | sgot->contents + off); | |
1312 | h->got.offset |= 1; | |
1313 | } | |
1314 | } | |
1315 | } | |
1316 | else | |
1317 | { | |
1318 | BFD_ASSERT (local_got_offsets != NULL | |
1319 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1320 | ||
1321 | off = local_got_offsets[r_symndx]; | |
1322 | ||
1323 | /* The offset must always be a multiple of 4. We use | |
1324 | the least significant bit to record whether we have | |
1325 | already generated the necessary reloc. */ | |
1326 | if ((off & 1) != 0) | |
1327 | off &= ~1; | |
1328 | else | |
1329 | { | |
1330 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1331 | ||
1332 | if (info->shared) | |
1333 | { | |
915e5146 | 1334 | Elf_Internal_Rela outrel; |
947216bf | 1335 | bfd_byte *loc; |
915e5146 | 1336 | |
100382c7 HPN |
1337 | if (srelgot == NULL) |
1338 | srelgot | |
1339 | = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1340 | BFD_ASSERT (srelgot != NULL); | |
915e5146 HPN |
1341 | |
1342 | outrel.r_offset = (sgot->output_section->vma | |
1343 | + sgot->output_offset | |
1344 | + off); | |
1345 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
1346 | outrel.r_addend = relocation; | |
100382c7 HPN |
1347 | loc = srelgot->contents; |
1348 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
947216bf | 1349 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
915e5146 HPN |
1350 | } |
1351 | ||
1352 | local_got_offsets[r_symndx] |= 1; | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | relocation = sgot->output_offset + off; | |
1357 | if (rel->r_addend != 0) | |
1358 | { | |
1359 | /* We can't do anything for a relocation which is against | |
1360 | a symbol *plus offset*. GOT holds relocations for | |
1361 | symbols. Make this an error; the compiler isn't | |
1362 | allowed to pass us these kinds of things. */ | |
1363 | if (h == NULL) | |
1364 | (*_bfd_error_handler) | |
bac23f82 | 1365 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1366 | " against local symbol"), |
1367 | input_bfd, | |
1368 | input_section, | |
915e5146 | 1369 | cris_elf_howto_table[r_type].name, |
d003868e | 1370 | rel->r_addend); |
915e5146 HPN |
1371 | else |
1372 | (*_bfd_error_handler) | |
bac23f82 | 1373 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1374 | " against symbol `%s'"), |
1375 | input_bfd, | |
1376 | input_section, | |
915e5146 HPN |
1377 | cris_elf_howto_table[r_type].name, |
1378 | rel->r_addend, | |
d003868e | 1379 | symname[0] != '\0' ? symname : _("[whose name is lost]")); |
915e5146 HPN |
1380 | |
1381 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1382 | return FALSE; |
915e5146 HPN |
1383 | } |
1384 | } | |
1385 | break; | |
06c15ad7 | 1386 | |
915e5146 | 1387 | case R_CRIS_32_GOTREL: |
3dab95d3 HPN |
1388 | /* This relocation must only be performed against local symbols. |
1389 | It's also ok when we link a program and the symbol is either | |
1390 | defined in an ordinary (non-DSO) object or is undefined weak. */ | |
1391 | if (h != NULL | |
1392 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1393 | && !(!info->shared | |
f5385ebf AM |
1394 | && (h->def_regular |
1395 | || (!h->def_dynamic | |
3dab95d3 | 1396 | && h->root.type == bfd_link_hash_undefweak)))) |
915e5146 HPN |
1397 | { |
1398 | (*_bfd_error_handler) | |
bac23f82 HPN |
1399 | (_("%B, section %A: relocation %s is" |
1400 | " not allowed for global symbol: `%s'"), | |
d003868e AM |
1401 | input_bfd, |
1402 | input_section, | |
915e5146 | 1403 | cris_elf_howto_table[r_type].name, |
d003868e | 1404 | symname); |
915e5146 | 1405 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1406 | return FALSE; |
06c15ad7 HPN |
1407 | } |
1408 | ||
58255df3 HPN |
1409 | /* This can happen if we get a link error with the input ELF |
1410 | variant mismatching the output variant. Emit an error so | |
1411 | it's noticed if it happens elsewhere. */ | |
1412 | if (sgot == NULL) | |
1413 | { | |
1414 | (*_bfd_error_handler) | |
bac23f82 | 1415 | (_("%B, section %A: relocation %s with no GOT created"), |
d003868e AM |
1416 | input_bfd, |
1417 | input_section, | |
1418 | cris_elf_howto_table[r_type].name); | |
58255df3 | 1419 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1420 | return FALSE; |
58255df3 HPN |
1421 | } |
1422 | ||
915e5146 HPN |
1423 | /* This relocation is like a PC-relative one, except the |
1424 | reference point is the location of GOT. Note that | |
1425 | sgot->output_offset is not involved in this calculation. We | |
1426 | always want the start of entire .got section, not the | |
1427 | position after the reserved header. */ | |
1428 | relocation -= sgot->output_section->vma; | |
1429 | break; | |
06c15ad7 | 1430 | |
915e5146 HPN |
1431 | case R_CRIS_32_PLT_PCREL: |
1432 | /* Relocation is to the entry for this symbol in the | |
1433 | procedure linkage table. */ | |
06c15ad7 | 1434 | |
915e5146 HPN |
1435 | /* Resolve a PLT_PCREL reloc against a local symbol directly, |
1436 | without using the procedure linkage table. */ | |
0a4787a0 | 1437 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1438 | break; |
1439 | ||
1440 | if (h->plt.offset == (bfd_vma) -1 | |
1441 | || splt == NULL) | |
1442 | { | |
1443 | /* We didn't make a PLT entry for this symbol. This | |
1444 | happens when statically linking PIC code, or when | |
1445 | using -Bsymbolic. */ | |
1446 | break; | |
1447 | } | |
1448 | ||
1449 | relocation = (splt->output_section->vma | |
1450 | + splt->output_offset | |
1451 | + h->plt.offset); | |
1452 | break; | |
1453 | ||
1454 | case R_CRIS_32_PLT_GOTREL: | |
1455 | /* Like R_CRIS_32_PLT_PCREL, but the reference point is the | |
1456 | start of the .got section. See also comment at | |
1457 | R_CRIS_32_GOT. */ | |
1458 | relocation -= sgot->output_section->vma; | |
1459 | ||
1460 | /* Resolve a PLT_GOTREL reloc against a local symbol directly, | |
1461 | without using the procedure linkage table. */ | |
0a4787a0 | 1462 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1463 | break; |
1464 | ||
1465 | if (h->plt.offset == (bfd_vma) -1 | |
1466 | || splt == NULL) | |
1467 | { | |
1468 | /* We didn't make a PLT entry for this symbol. This | |
1469 | happens when statically linking PIC code, or when | |
1470 | using -Bsymbolic. */ | |
1471 | break; | |
1472 | } | |
1473 | ||
1474 | relocation = (splt->output_section->vma | |
1475 | + splt->output_offset | |
1476 | + h->plt.offset | |
1477 | - sgot->output_section->vma); | |
1478 | break; | |
1479 | ||
1480 | case R_CRIS_8_PCREL: | |
1481 | case R_CRIS_16_PCREL: | |
1482 | case R_CRIS_32_PCREL: | |
1483 | /* If the symbol was local, we need no shlib-specific handling. */ | |
0d08de41 HPN |
1484 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
1485 | || h->dynindx == -1) | |
915e5146 HPN |
1486 | break; |
1487 | ||
1488 | /* Fall through. */ | |
1489 | case R_CRIS_8: | |
1490 | case R_CRIS_16: | |
1491 | case R_CRIS_32: | |
1492 | if (info->shared | |
ec338859 | 1493 | && r_symndx != 0 |
915e5146 HPN |
1494 | && (input_section->flags & SEC_ALLOC) != 0 |
1495 | && ((r_type != R_CRIS_8_PCREL | |
1496 | && r_type != R_CRIS_16_PCREL | |
1497 | && r_type != R_CRIS_32_PCREL) | |
1498 | || (!info->symbolic | |
02865b8e | 1499 | || (h != NULL && !h->def_regular)))) |
915e5146 HPN |
1500 | { |
1501 | Elf_Internal_Rela outrel; | |
947216bf | 1502 | bfd_byte *loc; |
b34976b6 | 1503 | bfd_boolean skip, relocate; |
915e5146 HPN |
1504 | |
1505 | /* When generating a shared object, these relocations | |
1506 | are copied into the output file to be resolved at run | |
1507 | time. */ | |
1508 | ||
1509 | if (sreloc == NULL) | |
1510 | { | |
83bac4b0 NC |
1511 | sreloc = _bfd_elf_get_dynamic_reloc_section |
1512 | (input_bfd, input_section, /*rela?*/ TRUE); | |
1513 | /* The section should have been created in cris_elf_check_relocs, | |
1514 | but that function will not be called for objects which fail in | |
915e5146 HPN |
1515 | cris_elf_merge_private_bfd_data. */ |
1516 | if (sreloc == NULL) | |
1517 | { | |
915e5146 | 1518 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1519 | return FALSE; |
915e5146 HPN |
1520 | } |
1521 | } | |
1522 | ||
b34976b6 AM |
1523 | skip = FALSE; |
1524 | relocate = FALSE; | |
915e5146 | 1525 | |
c629eae0 JJ |
1526 | outrel.r_offset = |
1527 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1528 | rel->r_offset); | |
1529 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1530 | skip = TRUE; |
0bb2d96a | 1531 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1532 | skip = TRUE, relocate = TRUE; |
915e5146 HPN |
1533 | outrel.r_offset += (input_section->output_section->vma |
1534 | + input_section->output_offset); | |
1535 | ||
1536 | if (skip) | |
0bb2d96a | 1537 | memset (&outrel, 0, sizeof outrel); |
915e5146 HPN |
1538 | /* h->dynindx may be -1 if the symbol was marked to |
1539 | become local. */ | |
1540 | else if (h != NULL | |
1541 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1542 | || !h->def_regular)) |
915e5146 HPN |
1543 | { |
1544 | BFD_ASSERT (h->dynindx != -1); | |
915e5146 HPN |
1545 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1546 | outrel.r_addend = relocation + rel->r_addend; | |
1547 | } | |
1548 | else | |
1549 | { | |
74541ad4 AM |
1550 | outrel.r_addend = relocation + rel->r_addend; |
1551 | ||
915e5146 HPN |
1552 | if (r_type == R_CRIS_32) |
1553 | { | |
b34976b6 | 1554 | relocate = TRUE; |
915e5146 | 1555 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); |
915e5146 HPN |
1556 | } |
1557 | else | |
1558 | { | |
1559 | long indx; | |
1560 | ||
8517fae7 | 1561 | if (bfd_is_abs_section (sec)) |
915e5146 HPN |
1562 | indx = 0; |
1563 | else if (sec == NULL || sec->owner == NULL) | |
1564 | { | |
1565 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1566 | return FALSE; |
915e5146 HPN |
1567 | } |
1568 | else | |
1569 | { | |
1570 | asection *osec; | |
1571 | ||
74541ad4 AM |
1572 | /* We are turning this relocation into one |
1573 | against a section symbol. It would be | |
1574 | proper to subtract the symbol's value, | |
1575 | osec->vma, from the emitted reloc addend, | |
1576 | but ld.so expects buggy relocs. */ | |
915e5146 HPN |
1577 | osec = sec->output_section; |
1578 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
1579 | if (indx == 0) |
1580 | { | |
1581 | struct elf_cris_link_hash_table *htab; | |
1582 | htab = elf_cris_hash_table (info); | |
1583 | osec = htab->root.text_index_section; | |
1584 | indx = elf_section_data (osec)->dynindx; | |
1585 | } | |
1586 | BFD_ASSERT (indx != 0); | |
915e5146 HPN |
1587 | } |
1588 | ||
915e5146 | 1589 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
915e5146 HPN |
1590 | } |
1591 | } | |
1592 | ||
947216bf AM |
1593 | loc = sreloc->contents; |
1594 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1595 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
915e5146 HPN |
1596 | |
1597 | /* This reloc will be computed at runtime, so there's no | |
1598 | need to do anything now, except for R_CRIS_32 relocations | |
1599 | that have been turned into R_CRIS_RELATIVE. */ | |
1600 | if (!relocate) | |
1601 | continue; | |
1602 | } | |
1603 | ||
1604 | break; | |
100382c7 HPN |
1605 | |
1606 | case R_CRIS_16_DTPREL: | |
1607 | case R_CRIS_32_DTPREL: | |
1608 | /* This relocation must only be performed against local | |
1609 | symbols. It's also ok when we link a program and the | |
1610 | symbol is defined in an ordinary (non-DSO) object (if | |
1611 | it's undefined there, we've already seen an error). */ | |
1612 | if (h != NULL | |
1613 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1614 | && (info->shared | |
1615 | || (!h->def_regular | |
1616 | && h->root.type != bfd_link_hash_undefined))) | |
1617 | { | |
1618 | (*_bfd_error_handler) | |
1619 | ((h->root.type == bfd_link_hash_undefined) | |
1620 | /* We shouldn't get here for GCC-emitted code. */ | |
1621 | ? _("%B, section %A: relocation %s has an undefined" | |
1622 | " reference to `%s', perhaps a declaration mixup?") | |
1623 | : ("%B, section %A: relocation %s is" | |
1624 | " not allowed for `%s', a global symbol with default" | |
1625 | " visibility, perhaps a declaration mixup?"), | |
1626 | input_bfd, | |
1627 | input_section, | |
1628 | cris_elf_howto_table[r_type].name, | |
1629 | symname != NULL && symname[0] != '\0' | |
1630 | ? symname : _("[whose name is lost]")); | |
1631 | bfd_set_error (bfd_error_bad_value); | |
1632 | return FALSE; | |
1633 | } | |
1634 | ||
1635 | BFD_ASSERT (elf_cris_hash_table (info)->dtpmod_refcount != 0); | |
1636 | ||
1637 | /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't | |
1638 | already done so. Note that we do this in .got.plt, not | |
1639 | in .got, as .got.plt contains the first part, still the | |
1640 | reloc is against .got, because the linker script directs | |
1641 | (is required to direct) them both into .got. */ | |
1642 | if (elf_cris_hash_table (info)->dtpmod_refcount > 0) | |
1643 | { | |
1644 | asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1645 | BFD_ASSERT (sgotplt != NULL); | |
1646 | ||
1647 | if (info->shared) | |
1648 | { | |
1649 | Elf_Internal_Rela outrel; | |
1650 | bfd_byte *loc; | |
1651 | ||
1652 | if (srelgot == NULL) | |
1653 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1654 | BFD_ASSERT (srelgot != NULL); | |
1655 | loc = srelgot->contents; | |
1656 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1657 | ||
1658 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12); | |
1659 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); | |
1660 | outrel.r_offset = (sgotplt->output_section->vma | |
1661 | + sgotplt->output_offset | |
1662 | + 12); | |
1663 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD); | |
1664 | outrel.r_addend = 0; | |
1665 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1666 | } | |
1667 | else | |
1668 | { | |
1669 | /* For an executable, the GOT entry contents is known. */ | |
1670 | bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12); | |
1671 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); | |
1672 | } | |
1673 | ||
1674 | /* Reverse the sign to mark that we've emitted the | |
1675 | required GOT entry. */ | |
1676 | elf_cris_hash_table (info)->dtpmod_refcount | |
1677 | = -elf_cris_hash_table (info)->dtpmod_refcount; | |
1678 | } | |
1679 | ||
1680 | /* The thread-based offset to the local symbol is the | |
1681 | relocation. */ | |
1682 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1683 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
1684 | break; | |
1685 | ||
1686 | case R_CRIS_32_GD: | |
1687 | if (info->shared) | |
1688 | { | |
1689 | bfd_set_error (bfd_error_invalid_operation); | |
1690 | ||
1691 | /* We've already informed in cris_elf_check_relocs that | |
1692 | this is an error. */ | |
1693 | return FALSE; | |
1694 | } | |
1695 | /* Fall through. */ | |
1696 | ||
1697 | case R_CRIS_16_GOT_GD: | |
1698 | case R_CRIS_32_GOT_GD: | |
1699 | if (rel->r_addend != 0) | |
1700 | { | |
1701 | /* We can't do anything for a relocation which is against a | |
1702 | symbol *plus offset*. The GOT holds relocations for | |
1703 | symbols. Make this an error; the compiler isn't allowed | |
1704 | to pass us these kinds of things. */ | |
1705 | (*_bfd_error_handler) | |
1706 | (_("%B, section %A: relocation %s with non-zero addend %d" | |
1707 | " against symbol `%s'"), | |
1708 | input_bfd, | |
1709 | input_section, | |
1710 | cris_elf_howto_table[r_type].name, | |
1711 | rel->r_addend, | |
1712 | symname[0] != '\0' ? symname : _("[whose name is lost]")); | |
1713 | ||
1714 | bfd_set_error (bfd_error_bad_value); | |
1715 | return FALSE; | |
1716 | } | |
1717 | ||
1718 | if (!info->shared && (h == NULL || h->def_regular)) | |
1719 | { | |
1720 | /* Known contents of the GOT. */ | |
1721 | bfd_vma off; | |
1722 | ||
1723 | /* The symbol is defined in the program, so just write | |
1724 | (1, known_tpoffset) into the GOT. */ | |
1725 | relocation -= elf_hash_table (info)->tls_sec->vma; | |
1726 | ||
1727 | if (h != NULL) | |
1728 | { | |
1729 | off = elf_cris_hash_entry (h)->tprel_refcount > 0 | |
1730 | ? h->got.offset + 4 : h->got.offset; | |
1731 | } | |
1732 | else | |
1733 | { | |
1734 | off = local_got_offsets[r_symndx]; | |
1735 | if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) | |
1736 | off += 4; | |
1737 | } | |
1738 | ||
1739 | /* We use bit 1 of the offset as a flag for GOT entry with | |
1740 | the R_CRIS_DTP reloc, setting it when we've emitted the | |
1741 | GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL | |
1742 | relocs. */ | |
1743 | if ((off & 2) == 0) | |
1744 | { | |
1745 | off &= ~3; | |
1746 | ||
1747 | if (h != NULL) | |
1748 | h->got.offset |= 2; | |
1749 | else | |
1750 | local_got_offsets[r_symndx] |= 2; | |
1751 | ||
1752 | bfd_put_32 (output_bfd, 1, sgot->contents + off); | |
1753 | bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4); | |
1754 | } | |
1755 | else | |
1756 | off &= ~3; | |
1757 | ||
1758 | relocation = sgot->output_offset + off | |
1759 | + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); | |
1760 | } | |
1761 | else | |
1762 | { | |
1763 | /* Not all parts of the GOT entry are known; emit a real | |
1764 | relocation. */ | |
1765 | bfd_vma off; | |
1766 | ||
1767 | if (h != NULL) | |
1768 | off = elf_cris_hash_entry (h)->tprel_refcount > 0 | |
1769 | ? h->got.offset + 4 : h->got.offset; | |
1770 | else | |
1771 | { | |
1772 | off = local_got_offsets[r_symndx]; | |
1773 | if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) | |
1774 | off += 4; | |
1775 | } | |
1776 | ||
1777 | /* See above re bit 1 and bit 0 usage. */ | |
1778 | if ((off & 2) == 0) | |
1779 | { | |
1780 | Elf_Internal_Rela outrel; | |
1781 | bfd_byte *loc; | |
1782 | ||
1783 | off &= ~3; | |
1784 | ||
1785 | if (h != NULL) | |
1786 | h->got.offset |= 2; | |
1787 | else | |
1788 | local_got_offsets[r_symndx] |= 2; | |
1789 | ||
1790 | /* Clear the target contents of the GOT (just as a | |
1791 | gesture; it's already cleared on allocation): this | |
1792 | relocation is not like the other dynrelocs. */ | |
1793 | bfd_put_32 (output_bfd, 0, sgot->contents + off); | |
1794 | bfd_put_32 (output_bfd, 0, sgot->contents + off + 4); | |
1795 | ||
1796 | if (srelgot == NULL) | |
1797 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1798 | BFD_ASSERT (srelgot != NULL); | |
1799 | ||
1800 | if (h != NULL && h->dynindx != -1) | |
1801 | { | |
1802 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP); | |
1803 | relocation = 0; | |
1804 | } | |
1805 | else | |
1806 | { | |
1807 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP); | |
1808 | ||
1809 | /* NULL if we had an error. */ | |
1810 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1811 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
1812 | } | |
1813 | ||
1814 | outrel.r_offset = (sgot->output_section->vma | |
1815 | + sgot->output_offset | |
1816 | + off); | |
1817 | outrel.r_addend = relocation; | |
1818 | loc = srelgot->contents; | |
1819 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1820 | ||
1821 | /* NULL if we had an error. */ | |
1822 | if (srelgot->contents != NULL) | |
1823 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1824 | } | |
1825 | else | |
1826 | off &= ~3; | |
1827 | ||
1828 | relocation = sgot->output_offset + off | |
1829 | + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); | |
1830 | } | |
1831 | ||
1832 | /* The GOT-relative offset to the GOT entry is the | |
1833 | relocation, or for R_CRIS_32_GD, the actual address of | |
1834 | the GOT entry. */ | |
1835 | break; | |
1836 | ||
75f500d7 HPN |
1837 | case R_CRIS_32_IE: |
1838 | if (info->shared) | |
1839 | { | |
1840 | bfd_set_error (bfd_error_invalid_operation); | |
1841 | ||
1842 | /* We've already informed in cris_elf_check_relocs that | |
1843 | this is an error. */ | |
1844 | return FALSE; | |
1845 | } | |
1846 | /* Fall through. */ | |
1847 | ||
100382c7 HPN |
1848 | case R_CRIS_32_GOT_TPREL: |
1849 | case R_CRIS_16_GOT_TPREL: | |
1850 | if (rel->r_addend != 0) | |
1851 | { | |
1852 | /* We can't do anything for a relocation which is | |
1853 | against a symbol *plus offset*. GOT holds | |
1854 | relocations for symbols. Make this an error; the | |
1855 | compiler isn't allowed to pass us these kinds of | |
1856 | things. */ | |
1857 | (*_bfd_error_handler) | |
1858 | (_("%B, section %A: relocation %s with non-zero addend %d" | |
1859 | " against symbol `%s'"), | |
1860 | input_bfd, | |
1861 | input_section, | |
1862 | cris_elf_howto_table[r_type].name, | |
1863 | rel->r_addend, | |
1864 | symname[0] != '\0' ? symname : _("[whose name is lost]")); | |
1865 | bfd_set_error (bfd_error_bad_value); | |
1866 | return FALSE; | |
1867 | } | |
1868 | ||
1869 | if (!info->shared && (h == NULL || h->def_regular)) | |
1870 | { | |
1871 | /* Known contents of the GOT. */ | |
1872 | bfd_vma off; | |
1873 | ||
1874 | /* The symbol is defined in the program, so just write | |
1875 | the known_tpoffset into the GOT. */ | |
1876 | relocation -= elf_hash_table (info)->tls_sec->vma; | |
1877 | ||
1878 | if (h != NULL) | |
1879 | off = h->got.offset; | |
1880 | else | |
1881 | off = local_got_offsets[r_symndx]; | |
1882 | ||
1883 | /* Bit 0 is used to mark whether we've emitted the required | |
1884 | entry (and if needed R_CRIS_32_TPREL reloc). Bit 1 | |
1885 | is used similarly for R_CRIS_DTP, see above. */ | |
1886 | if ((off & 1) == 0) | |
1887 | { | |
1888 | off &= ~3; | |
1889 | ||
1890 | if (h != NULL) | |
1891 | h->got.offset |= 1; | |
1892 | else | |
1893 | local_got_offsets[r_symndx] |= 1; | |
1894 | ||
1895 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1896 | } | |
1897 | else | |
1898 | off &= ~3; | |
1899 | ||
75f500d7 HPN |
1900 | relocation = sgot->output_offset + off |
1901 | + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); | |
100382c7 HPN |
1902 | } |
1903 | else | |
1904 | { | |
1905 | /* Emit a real relocation. */ | |
1906 | bfd_vma off; | |
1907 | ||
1908 | if (h != NULL) | |
1909 | off = h->got.offset; | |
1910 | else | |
1911 | off = local_got_offsets[r_symndx]; | |
1912 | ||
1913 | /* See above re usage of bit 0 and 1. */ | |
1914 | if ((off & 1) == 0) | |
1915 | { | |
1916 | Elf_Internal_Rela outrel; | |
1917 | bfd_byte *loc; | |
1918 | ||
1919 | off &= ~3; | |
1920 | ||
1921 | if (h != NULL) | |
1922 | h->got.offset |= 1; | |
1923 | else | |
1924 | local_got_offsets[r_symndx] |= 1; | |
1925 | ||
1926 | if (srelgot == NULL) | |
1927 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1928 | BFD_ASSERT (srelgot != NULL); | |
1929 | ||
1930 | if (h != NULL && h->dynindx != -1) | |
1931 | { | |
1932 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL); | |
1933 | relocation = 0; | |
1934 | } | |
1935 | else | |
1936 | { | |
1937 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL); | |
1938 | ||
1939 | /* NULL if we had an error. */ | |
1940 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
1941 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
1942 | } | |
1943 | ||
1944 | /* Just "define" the initial contents in some | |
1945 | semi-logical way. */ | |
1946 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1947 | ||
1948 | outrel.r_offset = (sgot->output_section->vma | |
1949 | + sgot->output_offset | |
1950 | + off); | |
1951 | outrel.r_addend = relocation; | |
1952 | loc = srelgot->contents; | |
1953 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); | |
1954 | /* NULL if we had an error. */ | |
1955 | if (srelgot->contents != NULL) | |
1956 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1957 | } | |
1958 | else | |
1959 | off &= ~3; | |
1960 | ||
75f500d7 HPN |
1961 | relocation = sgot->output_offset + off |
1962 | + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); | |
100382c7 HPN |
1963 | } |
1964 | ||
75f500d7 HPN |
1965 | /* The GOT-relative offset to the GOT entry is the relocation, |
1966 | or for R_CRIS_32_GD, the actual address of the GOT entry. */ | |
100382c7 HPN |
1967 | break; |
1968 | ||
1969 | case R_CRIS_16_TPREL: | |
1970 | case R_CRIS_32_TPREL: | |
1971 | /* This relocation must only be performed against symbols | |
1972 | defined in an ordinary (non-DSO) object. */ | |
1973 | if (info->shared) | |
1974 | { | |
1975 | bfd_set_error (bfd_error_invalid_operation); | |
1976 | ||
1977 | /* We've already informed in cris_elf_check_relocs that | |
1978 | this is an error. */ | |
1979 | return FALSE; | |
1980 | } | |
1981 | ||
1982 | if (h != NULL | |
1983 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1984 | && !h->def_regular | |
1985 | /* If it's undefined, then an error message has already | |
1986 | been emitted. */ | |
1987 | && h->root.type != bfd_link_hash_undefined) | |
1988 | { | |
1989 | (*_bfd_error_handler) | |
1990 | (_("%B, section %A: relocation %s is" | |
1991 | " not allowed for symbol: `%s'" | |
1992 | " which is defined outside the program," | |
1993 | " perhaps a declaration mixup?"), | |
1994 | input_bfd, | |
1995 | input_section, | |
1996 | cris_elf_howto_table[r_type].name, | |
1997 | symname); | |
1998 | bfd_set_error (bfd_error_bad_value); | |
1999 | return FALSE; | |
2000 | } | |
2001 | ||
2002 | /* NULL if we had an error. */ | |
2003 | relocation -= elf_hash_table (info)->tls_sec == NULL | |
2004 | ? 0 : elf_hash_table (info)->tls_sec->vma; | |
2005 | ||
2006 | /* The TLS-relative offset is the relocation. */ | |
2007 | break; | |
2008 | ||
2009 | default: | |
2010 | BFD_FAIL (); | |
2011 | return FALSE; | |
915e5146 HPN |
2012 | } |
2013 | ||
2014 | r = cris_final_link_relocate (howto, input_bfd, input_section, | |
2015 | contents, rel, relocation); | |
2016 | ||
2017 | if (r != bfd_reloc_ok) | |
2018 | { | |
2019 | const char * msg = (const char *) NULL; | |
2020 | ||
2021 | switch (r) | |
2022 | { | |
2023 | case bfd_reloc_overflow: | |
2024 | r = info->callbacks->reloc_overflow | |
dfeffb9f L |
2025 | (info, (h ? &h->root : NULL), symname, howto->name, |
2026 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
100382c7 HPN |
2027 | if (additional_relocation_error_msg_count > 0) |
2028 | { | |
2029 | additional_relocation_error_msg_count--; | |
2030 | switch (r_type) | |
2031 | { | |
2032 | case R_CRIS_16_GOTPLT: | |
2033 | case R_CRIS_16_GOT: | |
2034 | ||
2035 | /* Not just TLS is involved here, so we make | |
2036 | generation and message depend on -fPIC/-fpic | |
2037 | only. */ | |
2038 | case R_CRIS_16_GOT_TPREL: | |
2039 | case R_CRIS_16_GOT_GD: | |
2040 | (*_bfd_error_handler) | |
2041 | (_("(too many global variables for -fpic:" | |
2042 | " recompile with -fPIC)")); | |
2043 | break; | |
2044 | ||
2045 | case R_CRIS_16_TPREL: | |
2046 | case R_CRIS_16_DTPREL: | |
2047 | (*_bfd_error_handler) | |
2048 | (_("(thread-local data too big for -fpic or" | |
2049 | " -msmall-tls: recompile with -fPIC or" | |
2050 | " -mno-small-tls)")); | |
2051 | break; | |
2052 | ||
2053 | /* No known cause for overflow for other relocs. */ | |
2054 | default: | |
2055 | break; | |
2056 | } | |
2057 | } | |
915e5146 HPN |
2058 | break; |
2059 | ||
2060 | case bfd_reloc_undefined: | |
2061 | r = info->callbacks->undefined_symbol | |
dc810e39 | 2062 | (info, symname, input_bfd, input_section, rel->r_offset, |
b34976b6 | 2063 | TRUE); |
915e5146 HPN |
2064 | break; |
2065 | ||
2066 | case bfd_reloc_outofrange: | |
2067 | msg = _("internal error: out of range error"); | |
2068 | break; | |
2069 | ||
2070 | case bfd_reloc_notsupported: | |
2071 | msg = _("internal error: unsupported relocation error"); | |
2072 | break; | |
2073 | ||
2074 | case bfd_reloc_dangerous: | |
2075 | msg = _("internal error: dangerous relocation"); | |
2076 | break; | |
2077 | ||
2078 | default: | |
2079 | msg = _("internal error: unknown error"); | |
2080 | break; | |
2081 | } | |
2082 | ||
2083 | if (msg) | |
2084 | r = info->callbacks->warning | |
dc810e39 | 2085 | (info, msg, symname, input_bfd, input_section, rel->r_offset); |
915e5146 HPN |
2086 | |
2087 | if (! r) | |
b34976b6 | 2088 | return FALSE; |
915e5146 HPN |
2089 | } |
2090 | } | |
2091 | ||
b34976b6 | 2092 | return TRUE; |
915e5146 HPN |
2093 | } |
2094 | \f | |
2095 | /* Finish up dynamic symbol handling. We set the contents of various | |
2096 | dynamic sections here. */ | |
2097 | ||
b34976b6 | 2098 | static bfd_boolean |
915e5146 HPN |
2099 | elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym) |
2100 | bfd *output_bfd; | |
2101 | struct bfd_link_info *info; | |
2102 | struct elf_link_hash_entry *h; | |
2103 | Elf_Internal_Sym *sym; | |
2104 | { | |
2105 | bfd *dynobj; | |
bac23f82 HPN |
2106 | |
2107 | /* Where in the plt entry to put values. */ | |
915e5146 HPN |
2108 | int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16; |
2109 | ||
bac23f82 HPN |
2110 | /* What offset to add to the distance to the first PLT entry for the |
2111 | value at plt_off3. */ | |
2112 | int plt_off3_value_bias = 4; | |
2113 | ||
2114 | /* Where in the PLT entry the call-dynlink-stub is (happens to be same | |
2115 | for PIC and non-PIC for v32 and pre-v32). */ | |
2116 | int plt_stub_offset = 8; | |
2117 | int plt_entry_size = PLT_ENTRY_SIZE; | |
2118 | const bfd_byte *plt_entry = elf_cris_plt_entry; | |
2119 | const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry; | |
2120 | ||
2121 | /* Adjust the various PLT entry offsets. */ | |
2122 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) | |
2123 | { | |
2124 | plt_off2 = 14; | |
2125 | plt_off3 = 20; | |
2126 | plt_off3_value_bias = -2; | |
2127 | plt_stub_offset = 12; | |
2128 | plt_entry_size = PLT_ENTRY_SIZE_V32; | |
2129 | plt_entry = elf_cris_plt_entry_v32; | |
2130 | plt_pic_entry = elf_cris_pic_plt_entry_v32; | |
2131 | } | |
2132 | ||
915e5146 HPN |
2133 | dynobj = elf_hash_table (info)->dynobj; |
2134 | ||
2135 | if (h->plt.offset != (bfd_vma) -1) | |
2136 | { | |
2137 | asection *splt; | |
2138 | asection *sgotplt; | |
2139 | asection *sgot; | |
2140 | asection *srela; | |
2141 | bfd_vma got_base; | |
2142 | ||
2143 | bfd_vma gotplt_offset | |
100382c7 | 2144 | = elf_cris_hash_entry (h)->gotplt_offset; |
915e5146 | 2145 | Elf_Internal_Rela rela; |
947216bf | 2146 | bfd_byte *loc; |
b34976b6 | 2147 | bfd_boolean has_gotplt = gotplt_offset != 0; |
915e5146 HPN |
2148 | |
2149 | /* Get the index in the procedure linkage table which | |
2150 | corresponds to this symbol. This is the index of this symbol | |
2151 | in all the symbols for which we are making plt entries. The | |
2152 | first entry in the procedure linkage table is reserved. */ | |
2153 | /* We have to count backwards here, and the result is only valid as | |
2154 | an index into .got.plt and its relocations. FIXME: Constants... */ | |
2155 | bfd_vma gotplt_index = gotplt_offset/4 - 3; | |
2156 | ||
2157 | /* Get the offset into the .got table of the entry that corresponds | |
2158 | to this function. Note that we embed knowledge that "incoming" | |
2159 | .got goes after .got.plt in the output without padding (pointer | |
2160 | aligned). However, that knowledge is present in several other | |
c152c796 | 2161 | places too. */ |
915e5146 HPN |
2162 | bfd_vma got_offset |
2163 | = (has_gotplt | |
2164 | ? gotplt_offset | |
2165 | : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry); | |
2166 | ||
2167 | /* This symbol has an entry in the procedure linkage table. Set it | |
2168 | up. */ | |
2169 | ||
2170 | BFD_ASSERT (h->dynindx != -1); | |
2171 | ||
2172 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2173 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2174 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2175 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2176 | BFD_ASSERT (splt != NULL && sgotplt != NULL | |
2177 | && (! has_gotplt || srela != NULL)); | |
2178 | ||
2179 | got_base = sgotplt->output_section->vma + sgotplt->output_offset; | |
2180 | ||
2181 | /* Fill in the entry in the procedure linkage table. */ | |
2182 | if (! info->shared) | |
2183 | { | |
bac23f82 HPN |
2184 | memcpy (splt->contents + h->plt.offset, plt_entry, |
2185 | plt_entry_size); | |
915e5146 HPN |
2186 | |
2187 | /* We need to enter the absolute address of the GOT entry here. */ | |
2188 | bfd_put_32 (output_bfd, got_base + got_offset, | |
2189 | splt->contents + h->plt.offset + plt_off1); | |
2190 | } | |
2191 | else | |
2192 | { | |
bac23f82 HPN |
2193 | memcpy (splt->contents + h->plt.offset, plt_pic_entry, |
2194 | plt_entry_size); | |
915e5146 HPN |
2195 | bfd_put_32 (output_bfd, got_offset, |
2196 | splt->contents + h->plt.offset + plt_off1); | |
2197 | } | |
2198 | ||
2199 | /* Fill in the plt entry and make a relocation, if this is a "real" | |
2200 | PLT entry. */ | |
2201 | if (has_gotplt) | |
2202 | { | |
bac23f82 | 2203 | /* Fill in the offset to the reloc table. */ |
915e5146 HPN |
2204 | bfd_put_32 (output_bfd, |
2205 | gotplt_index * sizeof (Elf32_External_Rela), | |
2206 | splt->contents + h->plt.offset + plt_off2); | |
2207 | ||
2208 | /* Fill in the offset to the first PLT entry, where to "jump". */ | |
bac23f82 HPN |
2209 | bfd_put_32 (output_bfd, |
2210 | - (h->plt.offset + plt_off3 + plt_off3_value_bias), | |
915e5146 HPN |
2211 | splt->contents + h->plt.offset + plt_off3); |
2212 | ||
2213 | /* Fill in the entry in the global offset table with the address of | |
2214 | the relocating stub. */ | |
2215 | bfd_put_32 (output_bfd, | |
2216 | (splt->output_section->vma | |
2217 | + splt->output_offset | |
2218 | + h->plt.offset | |
bac23f82 | 2219 | + plt_stub_offset), |
915e5146 HPN |
2220 | sgotplt->contents + got_offset); |
2221 | ||
2222 | /* Fill in the entry in the .rela.plt section. */ | |
2223 | rela.r_offset = (sgotplt->output_section->vma | |
2224 | + sgotplt->output_offset | |
2225 | + got_offset); | |
2226 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT); | |
2227 | rela.r_addend = 0; | |
947216bf AM |
2228 | loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela); |
2229 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
2230 | } |
2231 | ||
f5385ebf | 2232 | if (!h->def_regular) |
915e5146 HPN |
2233 | { |
2234 | /* Mark the symbol as undefined, rather than as defined in | |
2235 | the .plt section. Leave the value alone. */ | |
2236 | sym->st_shndx = SHN_UNDEF; | |
2237 | ||
2238 | /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't | |
2239 | know whether resetting the value is significant; if it really | |
2240 | is, rather than a quirk or bug in the sparc port, then I | |
2241 | believe we'd see this elsewhere. */ | |
2242 | /* If the symbol is weak, we do need to clear the value. | |
2243 | Otherwise, the PLT entry would provide a definition for | |
2244 | the symbol even if the symbol wasn't defined anywhere, | |
2245 | and so the symbol would never be NULL. */ | |
f5385ebf | 2246 | if (!h->ref_regular_nonweak) |
915e5146 HPN |
2247 | sym->st_value = 0; |
2248 | } | |
2249 | } | |
2250 | ||
e4a2175c HPN |
2251 | /* For an ordinary program, we emit .got relocs only for symbols that |
2252 | are in the dynamic-symbols table and are either defined by the | |
2253 | program or are undefined weak symbols, or are function symbols | |
2254 | where we do not output a PLT: the PLT reloc was output above and all | |
2255 | references to the function symbol are redirected to the PLT. */ | |
4d96d128 | 2256 | if (h->got.offset != (bfd_vma) -1 |
100382c7 | 2257 | && (elf_cris_hash_entry (h)->reg_got_refcount > 0) |
6849c52f HPN |
2258 | && (info->shared |
2259 | || (h->dynindx != -1 | |
e4a2175c | 2260 | && h->plt.offset == (bfd_vma) -1 |
f5385ebf | 2261 | && !h->def_regular |
6849c52f | 2262 | && h->root.type != bfd_link_hash_undefweak))) |
915e5146 HPN |
2263 | { |
2264 | asection *sgot; | |
2265 | asection *srela; | |
2266 | Elf_Internal_Rela rela; | |
947216bf | 2267 | bfd_byte *loc; |
dc810e39 | 2268 | bfd_byte *where; |
915e5146 HPN |
2269 | |
2270 | /* This symbol has an entry in the global offset table. Set it up. */ | |
2271 | ||
2272 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2273 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2274 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
2275 | ||
2276 | rela.r_offset = (sgot->output_section->vma | |
2277 | + sgot->output_offset | |
dc810e39 | 2278 | + (h->got.offset &~ (bfd_vma) 1)); |
915e5146 HPN |
2279 | |
2280 | /* If this is a static link, or it is a -Bsymbolic link and the | |
2281 | symbol is defined locally or was forced to be local because | |
2282 | of a version file, we just want to emit a RELATIVE reloc. | |
2283 | The entry in the global offset table will already have been | |
2284 | initialized in the relocate_section function. */ | |
dc810e39 | 2285 | where = sgot->contents + (h->got.offset &~ (bfd_vma) 1); |
915e5146 HPN |
2286 | if (! elf_hash_table (info)->dynamic_sections_created |
2287 | || (info->shared | |
2288 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 2289 | && h->def_regular)) |
915e5146 HPN |
2290 | { |
2291 | rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
dc810e39 | 2292 | rela.r_addend = bfd_get_signed_32 (output_bfd, where); |
915e5146 HPN |
2293 | } |
2294 | else | |
2295 | { | |
dc810e39 | 2296 | bfd_put_32 (output_bfd, (bfd_vma) 0, where); |
915e5146 HPN |
2297 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT); |
2298 | rela.r_addend = 0; | |
2299 | } | |
2300 | ||
947216bf AM |
2301 | loc = srela->contents; |
2302 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
2303 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
2304 | } |
2305 | ||
f5385ebf | 2306 | if (h->needs_copy) |
915e5146 HPN |
2307 | { |
2308 | asection *s; | |
2309 | Elf_Internal_Rela rela; | |
947216bf | 2310 | bfd_byte *loc; |
915e5146 HPN |
2311 | |
2312 | /* This symbol needs a copy reloc. Set it up. */ | |
2313 | ||
2314 | BFD_ASSERT (h->dynindx != -1 | |
2315 | && (h->root.type == bfd_link_hash_defined | |
2316 | || h->root.type == bfd_link_hash_defweak)); | |
2317 | ||
2318 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
2319 | ".rela.bss"); | |
2320 | BFD_ASSERT (s != NULL); | |
2321 | ||
2322 | rela.r_offset = (h->root.u.def.value | |
2323 | + h->root.u.def.section->output_section->vma | |
2324 | + h->root.u.def.section->output_offset); | |
2325 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY); | |
2326 | rela.r_addend = 0; | |
947216bf AM |
2327 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
2328 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
2329 | } |
2330 | ||
2331 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2332 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
22edb2f1 | 2333 | || h == elf_hash_table (info)->hgot) |
915e5146 HPN |
2334 | sym->st_shndx = SHN_ABS; |
2335 | ||
b34976b6 | 2336 | return TRUE; |
915e5146 HPN |
2337 | } |
2338 | \f | |
100382c7 HPN |
2339 | /* Finish up the dynamic sections. Do *not* emit relocs here, as their |
2340 | offsets were changed, as part of -z combreloc handling, from those we | |
2341 | computed. */ | |
915e5146 | 2342 | |
b34976b6 | 2343 | static bfd_boolean |
915e5146 HPN |
2344 | elf_cris_finish_dynamic_sections (output_bfd, info) |
2345 | bfd *output_bfd; | |
2346 | struct bfd_link_info *info; | |
2347 | { | |
2348 | bfd *dynobj; | |
2349 | asection *sgot; | |
2350 | asection *sdyn; | |
2351 | ||
2352 | dynobj = elf_hash_table (info)->dynobj; | |
2353 | ||
2354 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2355 | BFD_ASSERT (sgot != NULL); | |
2356 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
2357 | ||
2358 | if (elf_hash_table (info)->dynamic_sections_created) | |
2359 | { | |
2360 | asection *splt; | |
2361 | Elf32_External_Dyn *dyncon, *dynconend; | |
2362 | ||
2363 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2364 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
2365 | ||
2366 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 2367 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
915e5146 HPN |
2368 | for (; dyncon < dynconend; dyncon++) |
2369 | { | |
2370 | Elf_Internal_Dyn dyn; | |
2371 | asection *s; | |
2372 | ||
2373 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
2374 | ||
2375 | switch (dyn.d_tag) | |
2376 | { | |
2377 | default: | |
2378 | break; | |
2379 | ||
2380 | case DT_PLTGOT: | |
2381 | s = bfd_get_section_by_name (output_bfd, ".got"); | |
2382 | BFD_ASSERT (s != NULL); | |
2383 | dyn.d_un.d_ptr = s->vma; | |
2384 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2385 | break; | |
2386 | ||
2387 | case DT_JMPREL: | |
2388 | /* Yes, we *can* have a .plt and no .plt.rela, for instance | |
2389 | if all symbols are found in the .got (not .got.plt). */ | |
2390 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2391 | dyn.d_un.d_ptr = s != NULL ? s->vma : 0; | |
2392 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
2393 | break; | |
2394 | ||
2395 | case DT_PLTRELSZ: | |
2396 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2397 | if (s == NULL) | |
2398 | dyn.d_un.d_val = 0; | |
915e5146 | 2399 | else |
eea6121a | 2400 | dyn.d_un.d_val = s->size; |
915e5146 HPN |
2401 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2402 | break; | |
2403 | ||
2404 | case DT_RELASZ: | |
2405 | /* The procedure linkage table relocs (DT_JMPREL) should | |
2406 | not be included in the overall relocs (DT_RELA). | |
2407 | Therefore, we override the DT_RELASZ entry here to | |
2408 | make it not include the JMPREL relocs. Since the | |
2409 | linker script arranges for .rela.plt to follow all | |
2410 | other relocation sections, we don't have to worry | |
2411 | about changing the DT_RELA entry. */ | |
2412 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
2413 | if (s != NULL) | |
eea6121a | 2414 | dyn.d_un.d_val -= s->size; |
915e5146 HPN |
2415 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
2416 | break; | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 2421 | if (splt->size > 0) |
915e5146 | 2422 | { |
bac23f82 HPN |
2423 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) |
2424 | { | |
2425 | if (info->shared) | |
2426 | memcpy (splt->contents, elf_cris_pic_plt0_entry_v32, | |
2427 | PLT_ENTRY_SIZE_V32); | |
2428 | else | |
2429 | { | |
2430 | memcpy (splt->contents, elf_cris_plt0_entry_v32, | |
2431 | PLT_ENTRY_SIZE_V32); | |
2432 | bfd_put_32 (output_bfd, | |
2433 | sgot->output_section->vma | |
2434 | + sgot->output_offset + 4, | |
2435 | splt->contents + 4); | |
2436 | ||
2437 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2438 | = PLT_ENTRY_SIZE_V32; | |
2439 | } | |
2440 | } | |
915e5146 | 2441 | else |
bac23f82 HPN |
2442 | { |
2443 | if (info->shared) | |
2444 | memcpy (splt->contents, elf_cris_pic_plt0_entry, | |
2445 | PLT_ENTRY_SIZE); | |
2446 | else | |
2447 | { | |
2448 | memcpy (splt->contents, elf_cris_plt0_entry, | |
2449 | PLT_ENTRY_SIZE); | |
2450 | bfd_put_32 (output_bfd, | |
2451 | sgot->output_section->vma | |
2452 | + sgot->output_offset + 4, | |
2453 | splt->contents + 6); | |
2454 | bfd_put_32 (output_bfd, | |
2455 | sgot->output_section->vma | |
2456 | + sgot->output_offset + 8, | |
2457 | splt->contents + 14); | |
2458 | ||
2459 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
2460 | = PLT_ENTRY_SIZE; | |
2461 | } | |
915e5146 HPN |
2462 | } |
2463 | } | |
2464 | } | |
2465 | ||
2466 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 2467 | if (sgot->size > 0) |
915e5146 HPN |
2468 | { |
2469 | if (sdyn == NULL) | |
2470 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
2471 | else | |
2472 | bfd_put_32 (output_bfd, | |
2473 | sdyn->output_section->vma + sdyn->output_offset, | |
2474 | sgot->contents); | |
2475 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
2476 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
2477 | } | |
2478 | ||
2479 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
2480 | ||
b34976b6 | 2481 | return TRUE; |
06c15ad7 HPN |
2482 | } |
2483 | \f | |
2484 | /* Return the section that should be marked against GC for a given | |
2485 | relocation. */ | |
2486 | ||
2487 | static asection * | |
07adf181 AM |
2488 | cris_elf_gc_mark_hook (asection *sec, |
2489 | struct bfd_link_info *info, | |
2490 | Elf_Internal_Rela *rel, | |
2491 | struct elf_link_hash_entry *h, | |
2492 | Elf_Internal_Sym *sym) | |
06c15ad7 | 2493 | { |
100382c7 | 2494 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); |
06c15ad7 | 2495 | if (h != NULL) |
100382c7 | 2496 | switch (r_type) |
07adf181 AM |
2497 | { |
2498 | case R_CRIS_GNU_VTINHERIT: | |
2499 | case R_CRIS_GNU_VTENTRY: | |
2500 | return NULL; | |
100382c7 HPN |
2501 | |
2502 | default: | |
2503 | break; | |
07adf181 | 2504 | } |
06c15ad7 | 2505 | |
07adf181 | 2506 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
06c15ad7 HPN |
2507 | } |
2508 | ||
2509 | /* Update the got entry reference counts for the section being removed. */ | |
2510 | ||
b34976b6 | 2511 | static bfd_boolean |
07adf181 AM |
2512 | cris_elf_gc_sweep_hook (bfd *abfd, |
2513 | struct bfd_link_info *info, | |
2514 | asection *sec, | |
2515 | const Elf_Internal_Rela *relocs) | |
06c15ad7 | 2516 | { |
915e5146 HPN |
2517 | Elf_Internal_Shdr *symtab_hdr; |
2518 | struct elf_link_hash_entry **sym_hashes; | |
2519 | bfd_signed_vma *local_got_refcounts; | |
2520 | const Elf_Internal_Rela *rel, *relend; | |
915e5146 HPN |
2521 | bfd *dynobj; |
2522 | asection *sgot; | |
2523 | asection *srelgot; | |
2524 | ||
7dda2462 TG |
2525 | if (info->relocatable) |
2526 | return TRUE; | |
2527 | ||
915e5146 HPN |
2528 | dynobj = elf_hash_table (info)->dynobj; |
2529 | if (dynobj == NULL) | |
b34976b6 | 2530 | return TRUE; |
915e5146 | 2531 | |
babfd660 KH |
2532 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2533 | sym_hashes = elf_sym_hashes (abfd); | |
2534 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2535 | ||
915e5146 HPN |
2536 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
2537 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2538 | ||
2539 | relend = relocs + sec->reloc_count; | |
2540 | for (rel = relocs; rel < relend; rel++) | |
2541 | { | |
babfd660 | 2542 | unsigned long r_symndx; |
3eb128b2 | 2543 | struct elf_link_hash_entry *h = NULL; |
100382c7 HPN |
2544 | bfd_signed_vma got_element_size = 4; |
2545 | bfd_signed_vma *specific_refcount = NULL; | |
2546 | enum elf_cris_reloc_type r_type; | |
3eb128b2 AM |
2547 | |
2548 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2549 | if (r_symndx >= symtab_hdr->sh_info) | |
2550 | { | |
2551 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2552 | while (h->root.type == bfd_link_hash_indirect | |
2553 | || h->root.type == bfd_link_hash_warning) | |
2554 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2555 | } | |
babfd660 | 2556 | |
100382c7 HPN |
2557 | r_type = ELF32_R_TYPE (rel->r_info); |
2558 | switch (r_type) | |
2559 | { | |
2560 | case R_CRIS_32_GOT: | |
2561 | case R_CRIS_16_GOT: | |
2562 | case R_CRIS_16_GOTPLT: | |
2563 | case R_CRIS_32_GOTPLT: | |
2564 | specific_refcount = h != NULL | |
2565 | ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount | |
2566 | : &local_got_refcounts[LGOT_REG_NDX (r_symndx)]; | |
2567 | break; | |
2568 | ||
2569 | case R_CRIS_32_GD: | |
2570 | case R_CRIS_32_GOT_GD: | |
2571 | case R_CRIS_16_GOT_GD: | |
2572 | got_element_size = 8; | |
2573 | specific_refcount = h != NULL | |
2574 | ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount | |
2575 | : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)]; | |
2576 | break; | |
2577 | ||
75f500d7 | 2578 | case R_CRIS_32_IE: |
100382c7 HPN |
2579 | case R_CRIS_16_GOT_TPREL: |
2580 | case R_CRIS_32_GOT_TPREL: | |
2581 | specific_refcount = h != NULL | |
2582 | ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount | |
2583 | : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)]; | |
2584 | break; | |
2585 | ||
2586 | default: | |
2587 | break; | |
2588 | } | |
2589 | ||
2590 | switch (r_type) | |
915e5146 | 2591 | { |
75f500d7 | 2592 | case R_CRIS_32_IE: |
100382c7 HPN |
2593 | case R_CRIS_32_GD: |
2594 | case R_CRIS_16_GOT_TPREL: | |
2595 | case R_CRIS_32_GOT_TPREL: | |
2596 | case R_CRIS_32_GOT_GD: | |
2597 | case R_CRIS_16_GOT_GD: | |
915e5146 HPN |
2598 | case R_CRIS_16_GOT: |
2599 | case R_CRIS_32_GOT: | |
3eb128b2 | 2600 | if (h != NULL) |
915e5146 | 2601 | { |
100382c7 HPN |
2602 | /* If the counters are 0 when we got here, we've |
2603 | miscounted somehow somewhere, an internal error. */ | |
2604 | BFD_ASSERT (h->got.refcount > 0); | |
2605 | --h->got.refcount; | |
2606 | ||
2607 | BFD_ASSERT (*specific_refcount > 0); | |
2608 | --*specific_refcount; | |
2609 | if (*specific_refcount == 0) | |
915e5146 | 2610 | { |
100382c7 HPN |
2611 | /* We don't need the .got entry any more. */ |
2612 | sgot->size -= got_element_size; | |
2613 | srelgot->size -= sizeof (Elf32_External_Rela); | |
915e5146 HPN |
2614 | } |
2615 | break; | |
2616 | } | |
2617 | ||
2618 | local_got_reloc: | |
2619 | if (local_got_refcounts != NULL) | |
2620 | { | |
100382c7 HPN |
2621 | /* If the counters are 0 when we got here, we've |
2622 | miscounted somehow somewhere, an internal error. */ | |
2623 | BFD_ASSERT (local_got_refcounts[r_symndx] > 0); | |
2624 | --local_got_refcounts[r_symndx]; | |
2625 | ||
2626 | BFD_ASSERT (*specific_refcount > 0); | |
2627 | --*specific_refcount; | |
2628 | if (*specific_refcount == 0) | |
915e5146 | 2629 | { |
100382c7 HPN |
2630 | /* We don't need the .got entry any more. */ |
2631 | sgot->size -= got_element_size; | |
2632 | if (info->shared) | |
2633 | srelgot->size -= sizeof (Elf32_External_Rela); | |
915e5146 HPN |
2634 | } |
2635 | } | |
2636 | break; | |
2637 | ||
2638 | case R_CRIS_16_GOTPLT: | |
2639 | case R_CRIS_32_GOTPLT: | |
2640 | /* For local symbols, treat these like GOT relocs. */ | |
3eb128b2 | 2641 | if (h == NULL) |
915e5146 | 2642 | goto local_got_reloc; |
e4a2175c | 2643 | /* Fall through. */ |
3eb128b2 | 2644 | |
915e5146 HPN |
2645 | case R_CRIS_32_PLT_GOTREL: |
2646 | /* FIXME: We don't garbage-collect away the .got section. */ | |
2647 | if (local_got_refcounts != NULL) | |
2648 | local_got_refcounts[-1]--; | |
2649 | /* Fall through. */ | |
3eb128b2 | 2650 | |
915e5146 HPN |
2651 | case R_CRIS_8_PCREL: |
2652 | case R_CRIS_16_PCREL: | |
2653 | case R_CRIS_32_PCREL: | |
2654 | case R_CRIS_32_PLT_PCREL: | |
3eb128b2 | 2655 | if (h != NULL) |
915e5146 | 2656 | { |
0a4787a0 HPN |
2657 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2658 | && h->plt.refcount > 0) | |
915e5146 HPN |
2659 | --h->plt.refcount; |
2660 | } | |
2661 | break; | |
2662 | ||
100382c7 HPN |
2663 | case R_CRIS_32_DTPREL: |
2664 | case R_CRIS_16_DTPREL: | |
2665 | elf_cris_hash_table (info)->dtpmod_refcount--; | |
2666 | if (elf_cris_hash_table (info)->dtpmod_refcount == 0) | |
2667 | elf_cris_hash_table (info)->next_gotplt_entry -= 8; | |
2668 | BFD_ASSERT (local_got_refcounts != NULL); | |
2669 | local_got_refcounts[-1]--; | |
2670 | break; | |
2671 | ||
915e5146 HPN |
2672 | default: |
2673 | break; | |
2674 | } | |
2675 | } | |
2676 | ||
b34976b6 | 2677 | return TRUE; |
06c15ad7 HPN |
2678 | } |
2679 | ||
915e5146 HPN |
2680 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
2681 | entry but we found we will not create any. Called when we find we will | |
4d96d128 HPN |
2682 | not have any PLT for this symbol, by for example |
2683 | elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
2684 | or elf_cris_size_dynamic_sections if no dynamic sections will be | |
2685 | created (we're only linking static objects). */ | |
915e5146 | 2686 | |
b34976b6 | 2687 | static bfd_boolean |
915e5146 HPN |
2688 | elf_cris_adjust_gotplt_to_got (h, p) |
2689 | struct elf_cris_link_hash_entry *h; | |
2690 | PTR p; | |
2691 | { | |
2692 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
915e5146 | 2693 | |
e92d460e AM |
2694 | if (h->root.root.type == bfd_link_hash_warning) |
2695 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
2696 | ||
915e5146 HPN |
2697 | /* If nobody wanted a GOTPLT with this symbol, we're done. */ |
2698 | if (h->gotplt_refcount <= 0) | |
b34976b6 | 2699 | return TRUE; |
915e5146 | 2700 | |
100382c7 | 2701 | if (h->reg_got_refcount > 0) |
915e5146 | 2702 | { |
100382c7 HPN |
2703 | /* There's a GOT entry for this symbol. Just adjust the refcounts. |
2704 | Probably not necessary at this stage, but keeping them accurate | |
915e5146 HPN |
2705 | helps avoiding surprises later. */ |
2706 | h->root.got.refcount += h->gotplt_refcount; | |
100382c7 | 2707 | h->reg_got_refcount += h->gotplt_refcount; |
5e0f5ae3 | 2708 | h->gotplt_refcount = 0; |
915e5146 HPN |
2709 | } |
2710 | else | |
2711 | { | |
4d96d128 | 2712 | /* No GOT entry for this symbol. We need to create one. */ |
8d1d654f AM |
2713 | bfd *dynobj = elf_hash_table (info)->dynobj; |
2714 | asection *sgot; | |
2715 | asection *srelgot; | |
2716 | ||
2717 | BFD_ASSERT (dynobj != NULL); | |
2718 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2719 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
915e5146 | 2720 | |
100382c7 HPN |
2721 | /* Put accurate refcounts there. */ |
2722 | h->root.got.refcount += h->gotplt_refcount; | |
2723 | h->reg_got_refcount = h->gotplt_refcount; | |
915e5146 | 2724 | |
5e0f5ae3 | 2725 | h->gotplt_refcount = 0; |
915e5146 | 2726 | |
44aa49bb HPN |
2727 | /* We always have a .got and a .rela.got section if there were |
2728 | GOTPLT relocs in input. */ | |
2729 | BFD_ASSERT (sgot != NULL && srelgot != NULL); | |
915e5146 HPN |
2730 | |
2731 | /* Allocate space in the .got section. */ | |
eea6121a | 2732 | sgot->size += 4; |
915e5146 HPN |
2733 | |
2734 | /* Allocate relocation space. */ | |
eea6121a | 2735 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2736 | } |
2737 | ||
b34976b6 | 2738 | return TRUE; |
915e5146 HPN |
2739 | } |
2740 | ||
2741 | /* Try to fold PLT entries with GOT entries. There are two cases when we | |
2742 | want to do this: | |
2743 | ||
2744 | - When all PLT references are GOTPLT references, and there are GOT | |
e4a2175c HPN |
2745 | references, and this is not the executable. We don't have to |
2746 | generate a PLT at all. | |
915e5146 | 2747 | |
e4a2175c HPN |
2748 | - When there are both (ordinary) PLT references and GOT references, |
2749 | and this isn't the executable. | |
915e5146 | 2750 | We want to make the PLT reference use the ordinary GOT entry rather |
e4a2175c HPN |
2751 | than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry, |
2752 | since the GOT entry will have to be resolved at startup anyway. | |
915e5146 HPN |
2753 | |
2754 | Though the latter case is handled when room for the PLT is allocated, | |
2755 | not here. | |
2756 | ||
e4a2175c HPN |
2757 | By folding into the GOT, we may need a round-trip to a PLT in the |
2758 | executable for calls, a loss in performance. Still, losing a | |
2759 | reloc is a win in size and at least in start-up time. | |
2760 | ||
915e5146 HPN |
2761 | Note that this function is called before symbols are forced local by |
2762 | version scripts. The differing cases are handled by | |
2763 | elf_cris_hide_symbol. */ | |
2764 | ||
b34976b6 | 2765 | static bfd_boolean |
915e5146 HPN |
2766 | elf_cris_try_fold_plt_to_got (h, p) |
2767 | struct elf_cris_link_hash_entry *h; | |
2768 | PTR p; | |
2769 | { | |
2770 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
2771 | ||
2772 | /* If there are no GOT references for this symbol, we can't fold any | |
2773 | other reference so there's nothing to do. Likewise if there are no | |
2774 | PLT references; GOTPLT references included. */ | |
2775 | if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0) | |
b34976b6 | 2776 | return TRUE; |
915e5146 HPN |
2777 | |
2778 | /* GOTPLT relocs are supposed to be included into the PLT refcount. */ | |
2779 | BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount); | |
2780 | ||
2781 | if (h->gotplt_refcount == h->root.plt.refcount) | |
2782 | { | |
4d96d128 | 2783 | /* The only PLT references are GOTPLT references, and there are GOT |
915e5146 HPN |
2784 | references. Convert PLT to GOT references. */ |
2785 | if (! elf_cris_adjust_gotplt_to_got (h, info)) | |
b34976b6 | 2786 | return FALSE; |
915e5146 HPN |
2787 | |
2788 | /* Clear the PLT references, so no PLT will be created. */ | |
2789 | h->root.plt.offset = (bfd_vma) -1; | |
2790 | } | |
2791 | ||
b34976b6 | 2792 | return TRUE; |
915e5146 HPN |
2793 | } |
2794 | ||
2795 | /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc | |
2796 | to use a GOT entry (and create one) rather than requiring a GOTPLT | |
2797 | entry. */ | |
2798 | ||
2799 | static void | |
e5094212 | 2800 | elf_cris_hide_symbol (info, h, force_local) |
915e5146 HPN |
2801 | struct bfd_link_info *info; |
2802 | struct elf_link_hash_entry *h; | |
b34976b6 | 2803 | bfd_boolean force_local; |
915e5146 HPN |
2804 | { |
2805 | elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info); | |
2806 | ||
e5094212 | 2807 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
915e5146 HPN |
2808 | } |
2809 | ||
2810 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2811 | regular object. The current definition is in some section of the | |
2812 | dynamic object, but we're not including those sections. We have to | |
2813 | change the definition to something the rest of the link can | |
2814 | understand. */ | |
2815 | ||
b34976b6 | 2816 | static bfd_boolean |
915e5146 HPN |
2817 | elf_cris_adjust_dynamic_symbol (info, h) |
2818 | struct bfd_link_info *info; | |
2819 | struct elf_link_hash_entry *h; | |
2820 | { | |
2821 | bfd *dynobj; | |
2822 | asection *s; | |
bac23f82 | 2823 | bfd_size_type plt_entry_size; |
915e5146 HPN |
2824 | |
2825 | dynobj = elf_hash_table (info)->dynobj; | |
2826 | ||
2827 | /* Make sure we know what is going on here. */ | |
2828 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 2829 | && (h->needs_plt |
f6e332e6 | 2830 | || h->u.weakdef != NULL |
f5385ebf AM |
2831 | || (h->def_dynamic |
2832 | && h->ref_regular | |
2833 | && !h->def_regular))); | |
915e5146 | 2834 | |
bac23f82 HPN |
2835 | plt_entry_size |
2836 | = (bfd_get_mach (dynobj) == bfd_mach_cris_v32 | |
2837 | ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); | |
2838 | ||
915e5146 HPN |
2839 | /* If this is a function, put it in the procedure linkage table. We |
2840 | will fill in the contents of the procedure linkage table later, | |
2841 | when we know the address of the .got section. */ | |
2842 | if (h->type == STT_FUNC | |
f5385ebf | 2843 | || h->needs_plt) |
915e5146 | 2844 | { |
6849c52f HPN |
2845 | /* If we link a program (not a DSO), we'll get rid of unnecessary |
2846 | PLT entries; we point to the actual symbols -- even for pic | |
2847 | relocs, because a program built with -fpic should have the same | |
2848 | result as one built without -fpic, specifically considering weak | |
2849 | symbols. | |
2850 | FIXME: m68k and i386 differ here, for unclear reasons. */ | |
915e5146 | 2851 | if (! info->shared |
f5385ebf | 2852 | && !h->def_dynamic) |
915e5146 HPN |
2853 | { |
2854 | /* This case can occur if we saw a PLT reloc in an input file, | |
6849c52f HPN |
2855 | but the symbol was not defined by a dynamic object. In such |
2856 | a case, we don't actually need to build a procedure linkage | |
2857 | table, and we can just do an absolute or PC reloc instead, or | |
4d96d128 | 2858 | change a .got.plt index to a .got index for GOTPLT relocs. */ |
f5385ebf AM |
2859 | BFD_ASSERT (h->needs_plt); |
2860 | h->needs_plt = 0; | |
915e5146 | 2861 | h->plt.offset = (bfd_vma) -1; |
915e5146 HPN |
2862 | return |
2863 | elf_cris_adjust_gotplt_to_got ((struct | |
2864 | elf_cris_link_hash_entry *) h, | |
2865 | info); | |
2866 | } | |
2867 | ||
e4a2175c HPN |
2868 | /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT; |
2869 | where a pointer-equivalent symbol was unimportant (i.e. more | |
2870 | like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid | |
2871 | of the PLT. We can't for the executable, because the GOT | |
2872 | entries will point to the PLT there (and be constant). */ | |
2873 | if (info->shared | |
2874 | && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*) | |
2875 | h, info)) | |
b34976b6 | 2876 | return FALSE; |
915e5146 HPN |
2877 | |
2878 | /* GC or folding may have rendered this entry unused. */ | |
2879 | if (h->plt.refcount <= 0) | |
2880 | { | |
f5385ebf | 2881 | h->needs_plt = 0; |
915e5146 | 2882 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 2883 | return TRUE; |
915e5146 HPN |
2884 | } |
2885 | ||
2886 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2887 | if (h->dynindx == -1) | |
2888 | { | |
c152c796 | 2889 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2890 | return FALSE; |
915e5146 HPN |
2891 | } |
2892 | ||
2893 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
2894 | BFD_ASSERT (s != NULL); | |
2895 | ||
2896 | /* If this is the first .plt entry, make room for the special | |
2897 | first entry. */ | |
eea6121a | 2898 | if (s->size == 0) |
bac23f82 | 2899 | s->size += plt_entry_size; |
915e5146 HPN |
2900 | |
2901 | /* If this symbol is not defined in a regular file, and we are | |
2902 | not generating a shared library, then set the symbol to this | |
6849c52f | 2903 | location in the .plt. */ |
915e5146 | 2904 | if (!info->shared |
f5385ebf | 2905 | && !h->def_regular) |
915e5146 HPN |
2906 | { |
2907 | h->root.u.def.section = s; | |
eea6121a | 2908 | h->root.u.def.value = s->size; |
915e5146 HPN |
2909 | } |
2910 | ||
4d96d128 HPN |
2911 | /* If there's already a GOT entry, use that, not a .got.plt. A |
2912 | GOT field still has a reference count when we get here; it's | |
e4a2175c HPN |
2913 | not yet changed to an offset. We can't do this for an |
2914 | executable, because then the reloc associated with the PLT | |
2915 | would get a non-PLT reloc pointing to the PLT. FIXME: Move | |
2916 | this to elf_cris_try_fold_plt_to_got. */ | |
2917 | if (info->shared && h->got.refcount > 0) | |
915e5146 HPN |
2918 | { |
2919 | h->got.refcount += h->plt.refcount; | |
2920 | ||
2921 | /* Mark the PLT offset to use the GOT entry by setting the low | |
2922 | bit in the plt offset; it is always a multiple of | |
bac23f82 HPN |
2923 | plt_entry_size (which is at least a multiple of 2). */ |
2924 | BFD_ASSERT ((s->size % plt_entry_size) == 0); | |
915e5146 HPN |
2925 | |
2926 | /* Change the PLT refcount to an offset. */ | |
eea6121a | 2927 | h->plt.offset = s->size; |
915e5146 HPN |
2928 | |
2929 | /* By not setting gotplt_offset (i.e. it remains at 0), we signal | |
2930 | that the got entry should be used instead. */ | |
2931 | BFD_ASSERT (((struct elf_cris_link_hash_entry *) | |
2932 | h)->gotplt_offset == 0); | |
2933 | ||
2934 | /* Make room for this entry. */ | |
bac23f82 | 2935 | s->size += plt_entry_size; |
915e5146 | 2936 | |
b34976b6 | 2937 | return TRUE; |
915e5146 HPN |
2938 | } |
2939 | ||
2940 | /* No GOT reference for this symbol; prepare for an ordinary PLT. */ | |
eea6121a | 2941 | h->plt.offset = s->size; |
915e5146 HPN |
2942 | |
2943 | /* Make room for this entry. */ | |
bac23f82 | 2944 | s->size += plt_entry_size; |
915e5146 HPN |
2945 | |
2946 | /* We also need to make an entry in the .got.plt section, which | |
2947 | will be placed in the .got section by the linker script. */ | |
2948 | ((struct elf_cris_link_hash_entry *) h)->gotplt_offset | |
2949 | = elf_cris_hash_table (info)->next_gotplt_entry; | |
2950 | elf_cris_hash_table (info)->next_gotplt_entry += 4; | |
2951 | ||
2952 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2953 | BFD_ASSERT (s != NULL); | |
eea6121a | 2954 | s->size += 4; |
915e5146 HPN |
2955 | |
2956 | /* We also need to make an entry in the .rela.plt section. */ | |
2957 | ||
2958 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2959 | BFD_ASSERT (s != NULL); | |
eea6121a | 2960 | s->size += sizeof (Elf32_External_Rela); |
915e5146 | 2961 | |
b34976b6 | 2962 | return TRUE; |
915e5146 HPN |
2963 | } |
2964 | ||
2965 | /* Reinitialize the plt offset now that it is not used as a reference | |
2966 | count any more. */ | |
2967 | h->plt.offset = (bfd_vma) -1; | |
2968 | ||
2969 | /* If this is a weak symbol, and there is a real definition, the | |
2970 | processor independent code will have arranged for us to see the | |
2971 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 2972 | if (h->u.weakdef != NULL) |
915e5146 | 2973 | { |
f6e332e6 AM |
2974 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2975 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2976 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2977 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 2978 | return TRUE; |
915e5146 HPN |
2979 | } |
2980 | ||
2981 | /* This is a reference to a symbol defined by a dynamic object which | |
2982 | is not a function. */ | |
2983 | ||
2984 | /* If we are creating a shared library, we must presume that the | |
2985 | only references to the symbol are via the global offset table. | |
2986 | For such cases we need not do anything here; the relocations will | |
2987 | be handled correctly by relocate_section. */ | |
2988 | if (info->shared) | |
b34976b6 | 2989 | return TRUE; |
915e5146 HPN |
2990 | |
2991 | /* If there are no references to this symbol that do not use the | |
2992 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2993 | if (!h->non_got_ref) |
b34976b6 | 2994 | return TRUE; |
915e5146 | 2995 | |
909272ee AM |
2996 | if (h->size == 0) |
2997 | { | |
2998 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
2999 | h->root.root.string); | |
3000 | return TRUE; | |
3001 | } | |
3002 | ||
915e5146 HPN |
3003 | /* We must allocate the symbol in our .dynbss section, which will |
3004 | become part of the .bss section of the executable. There will be | |
3005 | an entry for this symbol in the .dynsym section. The dynamic | |
3006 | object will contain position independent code, so all references | |
3007 | from the dynamic object to this symbol will go through the global | |
3008 | offset table. The dynamic linker will use the .dynsym entry to | |
3009 | determine the address it must put in the global offset table, so | |
3010 | both the dynamic object and the regular object will refer to the | |
3011 | same memory location for the variable. */ | |
3012 | ||
3013 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
3014 | BFD_ASSERT (s != NULL); | |
3015 | ||
3016 | /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to | |
3017 | copy the initial value out of the dynamic object and into the | |
3018 | runtime process image. We need to remember the offset into the | |
3019 | .rela.bss section we are going to use. */ | |
3020 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3021 | { | |
3022 | asection *srel; | |
3023 | ||
3024 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
3025 | BFD_ASSERT (srel != NULL); | |
eea6121a | 3026 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 3027 | h->needs_copy = 1; |
915e5146 HPN |
3028 | } |
3029 | ||
027297b7 | 3030 | return _bfd_elf_adjust_dynamic_copy (h, s); |
915e5146 HPN |
3031 | } |
3032 | ||
237bc7f0 HPN |
3033 | /* Adjust our "subclass" elements for an indirect symbol. */ |
3034 | ||
3035 | static void | |
3036 | elf_cris_copy_indirect_symbol (struct bfd_link_info *info, | |
3037 | struct elf_link_hash_entry *dir, | |
3038 | struct elf_link_hash_entry *ind) | |
3039 | { | |
3040 | struct elf_cris_link_hash_entry *edir, *eind; | |
3041 | ||
3042 | edir = (struct elf_cris_link_hash_entry *) dir; | |
3043 | eind = (struct elf_cris_link_hash_entry *) ind; | |
3044 | ||
867ea5fd HPN |
3045 | /* Only indirect symbols are replaced; we're not interested in |
3046 | updating any of EIND's fields for other symbols. */ | |
3047 | if (eind->root.root.type != bfd_link_hash_indirect) | |
3048 | return; | |
3049 | ||
237bc7f0 HPN |
3050 | BFD_ASSERT (edir->pcrel_relocs_copied == NULL); |
3051 | BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0); | |
3052 | ||
3053 | #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z | |
3054 | #define XMOVE(F) XMOVOPZ (F, +=, 0) | |
3055 | XMOVOPZ (pcrel_relocs_copied, =, NULL); | |
3056 | XMOVE (gotplt_refcount); | |
3057 | XMOVE (gotplt_offset); | |
3058 | XMOVE (reg_got_refcount); | |
3059 | XMOVE (tprel_refcount); | |
3060 | XMOVE (dtp_refcount); | |
3061 | #undef XMOVE | |
3062 | #undef XMOVOPZ | |
3063 | ||
3064 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3065 | } | |
3066 | ||
915e5146 | 3067 | /* Look through the relocs for a section during the first phase. */ |
a7c10850 | 3068 | |
b34976b6 | 3069 | static bfd_boolean |
06c15ad7 HPN |
3070 | cris_elf_check_relocs (abfd, info, sec, relocs) |
3071 | bfd *abfd; | |
3072 | struct bfd_link_info *info; | |
3073 | asection *sec; | |
3074 | const Elf_Internal_Rela *relocs; | |
3075 | { | |
915e5146 | 3076 | bfd *dynobj; |
06c15ad7 | 3077 | Elf_Internal_Shdr *symtab_hdr; |
5582a088 | 3078 | struct elf_link_hash_entry **sym_hashes; |
915e5146 | 3079 | bfd_signed_vma *local_got_refcounts; |
06c15ad7 HPN |
3080 | const Elf_Internal_Rela *rel; |
3081 | const Elf_Internal_Rela *rel_end; | |
915e5146 HPN |
3082 | asection *sgot; |
3083 | asection *srelgot; | |
3084 | asection *sreloc; | |
a7c10850 | 3085 | |
1049f94e | 3086 | if (info->relocatable) |
b34976b6 | 3087 | return TRUE; |
a7c10850 | 3088 | |
915e5146 | 3089 | dynobj = elf_hash_table (info)->dynobj; |
06c15ad7 HPN |
3090 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
3091 | sym_hashes = elf_sym_hashes (abfd); | |
915e5146 HPN |
3092 | local_got_refcounts = elf_local_got_refcounts (abfd); |
3093 | ||
3094 | sgot = NULL; | |
3095 | srelgot = NULL; | |
3096 | sreloc = NULL; | |
3097 | ||
06c15ad7 HPN |
3098 | rel_end = relocs + sec->reloc_count; |
3099 | for (rel = relocs; rel < rel_end; rel++) | |
3100 | { | |
3101 | struct elf_link_hash_entry *h; | |
3102 | unsigned long r_symndx; | |
915e5146 | 3103 | enum elf_cris_reloc_type r_type; |
100382c7 HPN |
3104 | bfd_signed_vma got_element_size = 4; |
3105 | unsigned long r_symndx_lgot = INT_MAX; | |
a7c10850 | 3106 | |
06c15ad7 HPN |
3107 | r_symndx = ELF32_R_SYM (rel->r_info); |
3108 | if (r_symndx < symtab_hdr->sh_info) | |
100382c7 HPN |
3109 | { |
3110 | h = NULL; | |
3111 | r_symndx_lgot = LGOT_REG_NDX (r_symndx); | |
3112 | } | |
06c15ad7 | 3113 | else |
973a3492 L |
3114 | { |
3115 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3116 | while (h->root.type == bfd_link_hash_indirect | |
3117 | || h->root.type == bfd_link_hash_warning) | |
3118 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3119 | } | |
a7c10850 | 3120 | |
915e5146 HPN |
3121 | r_type = ELF32_R_TYPE (rel->r_info); |
3122 | ||
3123 | /* Some relocs require linker-created sections; we need to hang them | |
3124 | on the first input bfd we found that contained dynamic relocs. */ | |
3125 | switch (r_type) | |
3126 | { | |
100382c7 HPN |
3127 | case R_CRIS_16_DTPREL: |
3128 | case R_CRIS_32_DTPREL: | |
3129 | /* The first .got.plt entry is right after the R_CRIS_DTPMOD | |
3130 | entry at index 3. */ | |
3131 | if (elf_cris_hash_table (info)->dtpmod_refcount == 0) | |
3132 | elf_cris_hash_table (info)->next_gotplt_entry += 8; | |
3133 | elf_cris_hash_table (info)->dtpmod_refcount++; | |
3134 | /* Fall through. */ | |
3135 | ||
75f500d7 | 3136 | case R_CRIS_32_IE: |
100382c7 HPN |
3137 | case R_CRIS_32_GD: |
3138 | case R_CRIS_16_GOT_GD: | |
3139 | case R_CRIS_32_GOT_GD: | |
3140 | case R_CRIS_32_GOT_TPREL: | |
3141 | case R_CRIS_16_GOT_TPREL: | |
915e5146 HPN |
3142 | case R_CRIS_16_GOT: |
3143 | case R_CRIS_32_GOT: | |
3144 | case R_CRIS_32_GOTREL: | |
3145 | case R_CRIS_32_PLT_GOTREL: | |
3146 | case R_CRIS_32_PLT_PCREL: | |
3147 | case R_CRIS_16_GOTPLT: | |
3148 | case R_CRIS_32_GOTPLT: | |
3149 | if (dynobj == NULL) | |
3150 | { | |
3151 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
3152 | ||
bac23f82 HPN |
3153 | /* We could handle this if we can get a handle on the |
3154 | output bfd in elf_cris_adjust_dynamic_symbol. Failing | |
3155 | that, we must insist on dynobj being a specific mach. */ | |
3156 | if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32) | |
3157 | { | |
3158 | (*_bfd_error_handler) | |
3159 | (_("%B, section %A:\n v10/v32 compatible object %s" | |
3160 | " must not contain a PIC relocation"), | |
3161 | abfd, sec); | |
3162 | return FALSE; | |
3163 | } | |
3164 | ||
915e5146 HPN |
3165 | /* Create the .got section, so we can assume it's always |
3166 | present whenever there's a dynobj. */ | |
3167 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 3168 | return FALSE; |
915e5146 | 3169 | } |
100382c7 HPN |
3170 | |
3171 | if (sgot == NULL) | |
3172 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3173 | ||
3174 | if (local_got_refcounts == NULL) | |
3175 | { | |
3176 | bfd_size_type amt; | |
3177 | ||
3178 | /* We use index local_got_refcounts[-1] to count all | |
3179 | GOT-relative relocations that do not have explicit | |
3180 | GOT entries. */ | |
3181 | amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1; | |
3182 | amt *= sizeof (bfd_signed_vma); | |
3183 | local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt)); | |
3184 | if (local_got_refcounts == NULL) | |
3185 | return FALSE; | |
3186 | ||
3187 | local_got_refcounts++; | |
3188 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
3189 | } | |
915e5146 HPN |
3190 | break; |
3191 | ||
3192 | default: | |
3193 | break; | |
3194 | } | |
3195 | ||
3196 | /* Some relocs require a global offset table (but perhaps not a | |
3197 | specific GOT entry). */ | |
4d96d128 | 3198 | switch (r_type) |
915e5146 | 3199 | { |
100382c7 HPN |
3200 | case R_CRIS_16_DTPREL: |
3201 | case R_CRIS_32_DTPREL: | |
3202 | /* Not requesting .got.rela for an executable: the contents | |
3203 | of the first entry is constant there. For a shared | |
3204 | library, we need .got.rela for the R_CRIS_DTPMOD | |
3205 | relocation at index 3. */ | |
3206 | if (!info->shared) | |
3207 | break; | |
3208 | /* Fall through. */ | |
3209 | ||
75f500d7 | 3210 | case R_CRIS_32_IE: |
100382c7 HPN |
3211 | case R_CRIS_32_GD: |
3212 | case R_CRIS_16_GOT_GD: | |
3213 | case R_CRIS_32_GOT_GD: | |
3214 | case R_CRIS_32_GOT_TPREL: | |
3215 | case R_CRIS_16_GOT_TPREL: | |
3216 | /* Fall through. */ | |
3217 | ||
44aa49bb HPN |
3218 | /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT |
3219 | entry only for local symbols. Unfortunately, we don't know | |
3220 | until later on if there's a version script that forces the | |
3221 | symbol local. We must have the .rela.got section in place | |
3222 | before we know if the symbol looks global now, so we need | |
3223 | to treat the reloc just like for R_CRIS_16_GOT and | |
3224 | R_CRIS_32_GOT. */ | |
3225 | case R_CRIS_16_GOTPLT: | |
3226 | case R_CRIS_32_GOTPLT: | |
915e5146 HPN |
3227 | case R_CRIS_16_GOT: |
3228 | case R_CRIS_32_GOT: | |
44aa49bb HPN |
3229 | if (srelgot == NULL |
3230 | && (h != NULL || info->shared)) | |
3231 | { | |
3232 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3233 | if (srelgot == NULL) | |
3234 | { | |
3496cb2a L |
3235 | srelgot = bfd_make_section_with_flags (dynobj, |
3236 | ".rela.got", | |
3237 | (SEC_ALLOC | |
3238 | | SEC_LOAD | |
3239 | | SEC_HAS_CONTENTS | |
3240 | | SEC_IN_MEMORY | |
3241 | | SEC_LINKER_CREATED | |
3242 | | SEC_READONLY)); | |
44aa49bb | 3243 | if (srelgot == NULL |
44aa49bb | 3244 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 3245 | return FALSE; |
44aa49bb HPN |
3246 | } |
3247 | } | |
100382c7 | 3248 | break; |
44aa49bb | 3249 | |
100382c7 HPN |
3250 | default: |
3251 | break; | |
3252 | } | |
915e5146 | 3253 | |
100382c7 HPN |
3254 | /* Warn and error for invalid input. */ |
3255 | switch (r_type) | |
3256 | { | |
75f500d7 | 3257 | case R_CRIS_32_IE: |
100382c7 HPN |
3258 | case R_CRIS_32_TPREL: |
3259 | case R_CRIS_16_TPREL: | |
3260 | case R_CRIS_32_GD: | |
3261 | if (info->shared) | |
915e5146 | 3262 | { |
100382c7 HPN |
3263 | (*_bfd_error_handler) |
3264 | (_("%B, section %A:\n relocation %s not valid" | |
3265 | " in a shared object;" | |
3266 | " typically an option mixup, recompile with -fPIC"), | |
3267 | abfd, | |
3268 | sec, | |
3269 | cris_elf_howto_table[r_type].name); | |
3270 | /* Don't return FALSE here; we want messages for all of | |
3271 | these and the error behavior is ungraceful | |
3272 | anyway. */ | |
3273 | } | |
3274 | default: | |
3275 | break; | |
3276 | } | |
915e5146 | 3277 | |
100382c7 HPN |
3278 | switch (r_type) |
3279 | { | |
3280 | case R_CRIS_32_GD: | |
3281 | case R_CRIS_16_GOT_GD: | |
3282 | case R_CRIS_32_GOT_GD: | |
3283 | /* These are requests for tls_index entries, run-time R_CRIS_DTP. */ | |
3284 | got_element_size = 8; | |
3285 | r_symndx_lgot = LGOT_DTP_NDX (r_symndx); | |
3286 | break; | |
915e5146 | 3287 | |
100382c7 HPN |
3288 | case R_CRIS_16_DTPREL: |
3289 | case R_CRIS_32_DTPREL: | |
3290 | /* These two just request for the constant-index | |
3291 | module-local tls_index-sized GOT entry, which we add | |
3292 | elsewhere. */ | |
915e5146 HPN |
3293 | break; |
3294 | ||
75f500d7 | 3295 | case R_CRIS_32_IE: |
100382c7 HPN |
3296 | case R_CRIS_32_GOT_TPREL: |
3297 | case R_CRIS_16_GOT_TPREL: | |
3298 | r_symndx_lgot = LGOT_TPREL_NDX (r_symndx); | |
3299 | ||
75f500d7 | 3300 | /* Those relocs also require that a DSO is of type |
100382c7 HPN |
3301 | Initial Exec. Like other targets, we don't reset this |
3302 | flag even if the relocs are GC:ed away. */ | |
3303 | if (info->shared) | |
3304 | info->flags |= DF_STATIC_TLS; | |
3305 | break; | |
3306 | ||
3307 | /* Let's list the other assembler-generated TLS-relocs too, | |
3308 | just to show that they're not forgotten. */ | |
3309 | case R_CRIS_16_TPREL: | |
3310 | case R_CRIS_32_TPREL: | |
915e5146 HPN |
3311 | default: |
3312 | break; | |
3313 | } | |
3314 | ||
4d96d128 | 3315 | switch (r_type) |
06c15ad7 | 3316 | { |
915e5146 HPN |
3317 | case R_CRIS_16_GOTPLT: |
3318 | case R_CRIS_32_GOTPLT: | |
3319 | /* Mark that we need a GOT entry if the PLT entry (and its GOT | |
3320 | entry) is eliminated. We can only do this for a non-local | |
3321 | symbol. */ | |
3322 | if (h != NULL) | |
3323 | { | |
100382c7 | 3324 | elf_cris_hash_entry (h)->gotplt_refcount++; |
915e5146 HPN |
3325 | goto handle_gotplt_reloc; |
3326 | } | |
3327 | /* If h is NULL then this is a local symbol, and we must make a | |
3328 | GOT entry for it, so handle it like a GOT reloc. */ | |
3329 | /* Fall through. */ | |
3330 | ||
75f500d7 | 3331 | case R_CRIS_32_IE: |
100382c7 HPN |
3332 | case R_CRIS_32_GD: |
3333 | case R_CRIS_16_GOT_GD: | |
3334 | case R_CRIS_32_GOT_GD: | |
3335 | case R_CRIS_32_GOT_TPREL: | |
3336 | case R_CRIS_16_GOT_TPREL: | |
915e5146 HPN |
3337 | case R_CRIS_16_GOT: |
3338 | case R_CRIS_32_GOT: | |
3339 | /* This symbol requires a global offset table entry. */ | |
915e5146 HPN |
3340 | if (h != NULL) |
3341 | { | |
51b64d56 | 3342 | if (h->got.refcount == 0) |
915e5146 | 3343 | { |
915e5146 HPN |
3344 | /* Make sure this symbol is output as a dynamic symbol. */ |
3345 | if (h->dynindx == -1) | |
3346 | { | |
c152c796 | 3347 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3348 | return FALSE; |
915e5146 | 3349 | } |
915e5146 | 3350 | } |
100382c7 HPN |
3351 | |
3352 | /* Update the sum of reloc counts for this symbol. */ | |
51b64d56 | 3353 | h->got.refcount++; |
100382c7 HPN |
3354 | |
3355 | switch (r_type) | |
3356 | { | |
3357 | case R_CRIS_16_GOT: | |
3358 | case R_CRIS_32_GOT: | |
3359 | if (elf_cris_hash_entry (h)->reg_got_refcount == 0) | |
3360 | { | |
3361 | /* Allocate space in the .got section. */ | |
3362 | sgot->size += got_element_size; | |
3363 | /* Allocate relocation space. */ | |
3364 | srelgot->size += sizeof (Elf32_External_Rela); | |
3365 | } | |
3366 | elf_cris_hash_entry (h)->reg_got_refcount++; | |
3367 | break; | |
3368 | ||
3369 | case R_CRIS_32_GD: | |
3370 | case R_CRIS_16_GOT_GD: | |
3371 | case R_CRIS_32_GOT_GD: | |
3372 | if (elf_cris_hash_entry (h)->dtp_refcount == 0) | |
3373 | { | |
3374 | /* Allocate space in the .got section. */ | |
3375 | sgot->size += got_element_size; | |
3376 | /* Allocate relocation space. */ | |
3377 | srelgot->size += sizeof (Elf32_External_Rela); | |
3378 | } | |
3379 | elf_cris_hash_entry (h)->dtp_refcount++; | |
3380 | break; | |
3381 | ||
75f500d7 | 3382 | case R_CRIS_32_IE: |
100382c7 HPN |
3383 | case R_CRIS_32_GOT_TPREL: |
3384 | case R_CRIS_16_GOT_TPREL: | |
3385 | if (elf_cris_hash_entry (h)->tprel_refcount == 0) | |
3386 | { | |
3387 | /* Allocate space in the .got section. */ | |
3388 | sgot->size += got_element_size; | |
3389 | /* Allocate relocation space. */ | |
3390 | srelgot->size += sizeof (Elf32_External_Rela); | |
3391 | } | |
3392 | elf_cris_hash_entry (h)->tprel_refcount++; | |
3393 | break; | |
3394 | ||
3395 | default: | |
3396 | BFD_FAIL (); | |
3397 | break; | |
3398 | } | |
915e5146 HPN |
3399 | } |
3400 | else | |
3401 | { | |
3402 | /* This is a global offset table entry for a local symbol. */ | |
100382c7 | 3403 | if (local_got_refcounts[r_symndx_lgot] == 0) |
915e5146 | 3404 | { |
100382c7 | 3405 | sgot->size += got_element_size; |
915e5146 HPN |
3406 | if (info->shared) |
3407 | { | |
100382c7 HPN |
3408 | /* If we are generating a shared object, we need |
3409 | to output a R_CRIS_RELATIVE reloc so that the | |
3410 | dynamic linker can adjust this GOT entry. | |
3411 | Similarly for non-regular got entries. */ | |
eea6121a | 3412 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
3413 | } |
3414 | } | |
100382c7 HPN |
3415 | /* Update the reloc-specific count. */ |
3416 | local_got_refcounts[r_symndx_lgot]++; | |
3417 | ||
3418 | /* This one is the sum of all the others. */ | |
51b64d56 | 3419 | local_got_refcounts[r_symndx]++; |
915e5146 HPN |
3420 | } |
3421 | break; | |
3422 | ||
100382c7 HPN |
3423 | case R_CRIS_16_DTPREL: |
3424 | case R_CRIS_32_DTPREL: | |
915e5146 HPN |
3425 | case R_CRIS_32_GOTREL: |
3426 | /* This reference requires a global offset table. | |
3427 | FIXME: The actual refcount isn't used currently; the .got | |
3428 | section can't be removed if there were any references in the | |
3429 | input. */ | |
3430 | local_got_refcounts[-1]++; | |
3431 | break; | |
3432 | ||
3433 | handle_gotplt_reloc: | |
3434 | ||
3435 | case R_CRIS_32_PLT_GOTREL: | |
3436 | /* This reference requires a global offset table. */ | |
3437 | local_got_refcounts[-1]++; | |
3438 | /* Fall through. */ | |
3439 | ||
3440 | case R_CRIS_32_PLT_PCREL: | |
3441 | /* This symbol requires a procedure linkage table entry. We | |
3442 | actually build the entry in adjust_dynamic_symbol, | |
3443 | because this might be a case of linking PIC code which is | |
3444 | never referenced by a dynamic object, in which case we | |
3445 | don't need to generate a procedure linkage table entry | |
3446 | after all. */ | |
3447 | ||
ada1953e HPN |
3448 | /* Beware: if we'd check for visibility of the symbol here |
3449 | (and not marking the need for a PLT when non-visible), we'd | |
3450 | get into trouble with keeping handling consistent with | |
3451 | regards to relocs found before definition and GOTPLT | |
3452 | handling. Eliminable PLT entries will be dealt with later | |
3453 | anyway. */ | |
3454 | if (h == NULL) | |
915e5146 HPN |
3455 | continue; |
3456 | ||
f5385ebf | 3457 | h->needs_plt = 1; |
51b64d56 | 3458 | h->plt.refcount++; |
915e5146 HPN |
3459 | break; |
3460 | ||
3461 | case R_CRIS_8: | |
3462 | case R_CRIS_16: | |
3463 | case R_CRIS_32: | |
3464 | /* Let's help debug shared library creation. Any of these | |
0d08de41 HPN |
3465 | relocs *can* be used in shared libs, but pages containing |
3466 | them cannot be shared, so they're not appropriate for | |
3467 | common use. Don't warn for sections we don't care about, | |
3468 | such as debug sections or non-constant sections. We | |
3469 | can't help tables of (global) function pointers, for | |
3470 | example, though they must be emitted in a (writable) data | |
3471 | section to avoid having impure text sections. */ | |
915e5146 HPN |
3472 | if (info->shared |
3473 | && (sec->flags & SEC_ALLOC) != 0 | |
3474 | && (sec->flags & SEC_READONLY) != 0) | |
3475 | { | |
3476 | /* FIXME: How do we make this optionally a warning only? */ | |
8f615d07 | 3477 | (*_bfd_error_handler) |
bac23f82 HPN |
3478 | (_("%B, section %A:\n relocation %s should not" |
3479 | " be used in a shared object; recompile with -fPIC"), | |
d003868e AM |
3480 | abfd, |
3481 | sec, | |
8f615d07 | 3482 | cris_elf_howto_table[r_type].name); |
915e5146 | 3483 | } |
0d08de41 HPN |
3484 | if (h != NULL) |
3485 | { | |
3486 | h->non_got_ref = 1; | |
100382c7 | 3487 | |
0d08de41 HPN |
3488 | /* Make sure a plt entry is created for this symbol if it |
3489 | turns out to be a function defined by a dynamic object. */ | |
3490 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
3491 | h->plt.refcount++; | |
3492 | } | |
3493 | ||
3494 | /* If we are creating a shared library and this is not a local | |
3495 | symbol, we need to copy the reloc into the shared library. | |
3496 | However when linking with -Bsymbolic and this is a global | |
3497 | symbol which is defined in an object we are including in the | |
3498 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
3499 | reloc directly. At this point we have not seen all the input | |
3500 | files, so it is possible that DEF_REGULAR is not set now but | |
3501 | will be set later (it is never cleared). In case of a weak | |
3502 | definition, DEF_REGULAR may be cleared later by a strong | |
3503 | definition in a shared library. We account for that | |
3504 | possibility below by storing information in the relocs_copied | |
3505 | field of the hash table entry. A similar situation occurs | |
3506 | when creating shared libraries and symbol visibility changes | |
3507 | render the symbol local. */ | |
3508 | ||
3509 | /* No need to do anything if we're not creating a shared object. */ | |
3510 | if (! info->shared) | |
3511 | break; | |
3512 | ||
3513 | /* We don't need to handle relocs into sections not going into | |
3514 | the "real" output. */ | |
3515 | if ((sec->flags & SEC_ALLOC) == 0) | |
3516 | break; | |
3517 | ||
3518 | /* We may need to create a reloc section in the dynobj and made room | |
3519 | for this reloc. */ | |
3520 | if (sreloc == NULL) | |
3521 | { | |
3522 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
3523 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
3524 | ||
3525 | if (sreloc == NULL) | |
3526 | return FALSE; | |
3527 | } | |
3528 | ||
3529 | if (sec->flags & SEC_READONLY) | |
3530 | info->flags |= DF_TEXTREL; | |
3531 | ||
3532 | sreloc->size += sizeof (Elf32_External_Rela); | |
3533 | break; | |
915e5146 HPN |
3534 | |
3535 | case R_CRIS_8_PCREL: | |
3536 | case R_CRIS_16_PCREL: | |
3537 | case R_CRIS_32_PCREL: | |
3538 | if (h != NULL) | |
3539 | { | |
f5385ebf | 3540 | h->non_got_ref = 1; |
915e5146 HPN |
3541 | |
3542 | /* Make sure a plt entry is created for this symbol if it | |
3543 | turns out to be a function defined by a dynamic object. */ | |
0a4787a0 HPN |
3544 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
3545 | h->plt.refcount++; | |
915e5146 HPN |
3546 | } |
3547 | ||
3548 | /* If we are creating a shared library and this is not a local | |
3549 | symbol, we need to copy the reloc into the shared library. | |
3550 | However when linking with -Bsymbolic and this is a global | |
3551 | symbol which is defined in an object we are including in the | |
3552 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
3553 | reloc directly. At this point we have not seen all the input | |
3554 | files, so it is possible that DEF_REGULAR is not set now but | |
3555 | will be set later (it is never cleared). In case of a weak | |
3556 | definition, DEF_REGULAR may be cleared later by a strong | |
3557 | definition in a shared library. We account for that | |
3558 | possibility below by storing information in the relocs_copied | |
3559 | field of the hash table entry. A similar situation occurs | |
3560 | when creating shared libraries and symbol visibility changes | |
3561 | render the symbol local. */ | |
3562 | ||
3563 | /* No need to do anything if we're not creating a shared object. */ | |
3564 | if (! info->shared) | |
3565 | break; | |
3566 | ||
3567 | /* We don't need to handle relocs into sections not going into | |
3568 | the "real" output. */ | |
3569 | if ((sec->flags & SEC_ALLOC) == 0) | |
3570 | break; | |
3571 | ||
0d08de41 HPN |
3572 | /* If the symbol is local, then we know already we can |
3573 | eliminate the reloc. */ | |
3574 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3575 | break; | |
bac23f82 | 3576 | |
0d08de41 HPN |
3577 | /* If this is with -Bsymbolic and the symbol isn't weak, and |
3578 | is defined by an ordinary object (the ones we include in | |
3579 | this shared library) then we can also eliminate the | |
3580 | reloc. See comment above for more eliminable cases which | |
3581 | we can't identify at this time. */ | |
3582 | if (info->symbolic | |
3583 | && h->root.type != bfd_link_hash_defweak | |
3584 | && h->def_regular) | |
3585 | break; | |
915e5146 | 3586 | |
83bac4b0 NC |
3587 | /* We may need to create a reloc section in the dynobj and made room |
3588 | for this reloc. */ | |
915e5146 HPN |
3589 | if (sreloc == NULL) |
3590 | { | |
83bac4b0 NC |
3591 | sreloc = _bfd_elf_make_dynamic_reloc_section |
3592 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
915e5146 | 3593 | |
83bac4b0 | 3594 | if (sreloc == NULL) |
b34976b6 | 3595 | return FALSE; |
915e5146 HPN |
3596 | } |
3597 | ||
eea6121a | 3598 | sreloc->size += sizeof (Elf32_External_Rela); |
915e5146 | 3599 | |
0d08de41 HPN |
3600 | /* We count the number of PC relative relocations we have |
3601 | entered for this symbol, so that we can discard them | |
3602 | again if the symbol is later defined by a regular object. | |
3603 | We know that h is really a pointer to an | |
915e5146 | 3604 | elf_cris_link_hash_entry. */ |
0d08de41 HPN |
3605 | { |
3606 | struct elf_cris_link_hash_entry *eh; | |
3607 | struct elf_cris_pcrel_relocs_copied *p; | |
915e5146 | 3608 | |
0d08de41 | 3609 | eh = elf_cris_hash_entry (h); |
915e5146 | 3610 | |
0d08de41 HPN |
3611 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) |
3612 | if (p->section == sreloc) | |
3613 | break; | |
915e5146 | 3614 | |
0d08de41 HPN |
3615 | if (p == NULL) |
3616 | { | |
3617 | p = ((struct elf_cris_pcrel_relocs_copied *) | |
3618 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); | |
3619 | if (p == NULL) | |
3620 | return FALSE; | |
3621 | p->next = eh->pcrel_relocs_copied; | |
3622 | eh->pcrel_relocs_copied = p; | |
3623 | p->section = sreloc; | |
3624 | p->count = 0; | |
3625 | p->r_type = r_type; | |
3626 | } | |
915e5146 | 3627 | |
0d08de41 HPN |
3628 | ++p->count; |
3629 | } | |
915e5146 HPN |
3630 | break; |
3631 | ||
06c15ad7 HPN |
3632 | /* This relocation describes the C++ object vtable hierarchy. |
3633 | Reconstruct it for later use during GC. */ | |
3634 | case R_CRIS_GNU_VTINHERIT: | |
c152c796 | 3635 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 3636 | return FALSE; |
06c15ad7 | 3637 | break; |
a7c10850 | 3638 | |
06c15ad7 HPN |
3639 | /* This relocation describes which C++ vtable entries are actually |
3640 | used. Record for later use during GC. */ | |
3641 | case R_CRIS_GNU_VTENTRY: | |
d17e0c6e JB |
3642 | BFD_ASSERT (h != NULL); |
3643 | if (h != NULL | |
3644 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 3645 | return FALSE; |
06c15ad7 | 3646 | break; |
4d96d128 | 3647 | |
100382c7 HPN |
3648 | case R_CRIS_16_TPREL: |
3649 | case R_CRIS_32_TPREL: | |
3650 | /* Already warned above, when necessary. */ | |
3651 | break; | |
3652 | ||
4d96d128 HPN |
3653 | default: |
3654 | /* Other relocs do not appear here. */ | |
3655 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3656 | return FALSE; |
06c15ad7 HPN |
3657 | } |
3658 | } | |
a7c10850 | 3659 | |
b34976b6 | 3660 | return TRUE; |
06c15ad7 | 3661 | } |
4da81684 | 3662 | |
915e5146 HPN |
3663 | /* Set the sizes of the dynamic sections. */ |
3664 | ||
b34976b6 | 3665 | static bfd_boolean |
915e5146 | 3666 | elf_cris_size_dynamic_sections (output_bfd, info) |
99e4ae17 | 3667 | bfd *output_bfd ATTRIBUTE_UNUSED; |
915e5146 HPN |
3668 | struct bfd_link_info *info; |
3669 | { | |
3670 | bfd *dynobj; | |
3671 | asection *s; | |
b34976b6 AM |
3672 | bfd_boolean plt; |
3673 | bfd_boolean relocs; | |
915e5146 HPN |
3674 | |
3675 | dynobj = elf_hash_table (info)->dynobj; | |
3676 | BFD_ASSERT (dynobj != NULL); | |
3677 | ||
3678 | if (elf_hash_table (info)->dynamic_sections_created) | |
3679 | { | |
3680 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 3681 | if (info->executable) |
915e5146 HPN |
3682 | { |
3683 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
3684 | BFD_ASSERT (s != NULL); | |
eea6121a | 3685 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
915e5146 HPN |
3686 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3687 | } | |
3688 | } | |
3689 | else | |
3690 | { | |
3691 | /* Adjust all expected GOTPLT uses to use a GOT entry instead. */ | |
3692 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
3693 | elf_cris_adjust_gotplt_to_got, | |
3694 | (PTR) info); | |
3695 | ||
3696 | /* We may have created entries in the .rela.got section. | |
3697 | However, if we are not creating the dynamic sections, we will | |
3698 | not actually use these entries. Reset the size of .rela.got, | |
3699 | which will cause it to get stripped from the output file | |
3700 | below. */ | |
3701 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3702 | if (s != NULL) | |
eea6121a | 3703 | s->size = 0; |
915e5146 HPN |
3704 | } |
3705 | ||
3706 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
3707 | relative relocs against symbols defined in a regular object. We | |
3708 | allocated space for them in the check_relocs routine, but we will not | |
3709 | fill them in in the relocate_section routine. We also discard space | |
3710 | for relocs that have become for local symbols due to symbol | |
4d96d128 HPN |
3711 | visibility changes. For programs, we discard space for relocs for |
3712 | symbols not referenced by any dynamic object. */ | |
915e5146 HPN |
3713 | if (info->shared) |
3714 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
4d96d128 HPN |
3715 | elf_cris_discard_excess_dso_dynamics, |
3716 | (PTR) info); | |
3717 | else | |
3718 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
3719 | elf_cris_discard_excess_program_dynamics, | |
915e5146 HPN |
3720 | (PTR) info); |
3721 | ||
3722 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3723 | determined the sizes of the various dynamic sections. Allocate | |
3724 | memory for them. */ | |
b34976b6 AM |
3725 | plt = FALSE; |
3726 | relocs = FALSE; | |
915e5146 HPN |
3727 | for (s = dynobj->sections; s != NULL; s = s->next) |
3728 | { | |
3729 | const char *name; | |
915e5146 HPN |
3730 | |
3731 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3732 | continue; | |
3733 | ||
3734 | /* It's OK to base decisions on the section name, because none | |
3735 | of the dynobj section names depend upon the input files. */ | |
3736 | name = bfd_get_section_name (dynobj, s); | |
3737 | ||
915e5146 HPN |
3738 | if (strcmp (name, ".plt") == 0) |
3739 | { | |
c456f082 AM |
3740 | /* Remember whether there is a PLT. */ |
3741 | plt = s->size != 0; | |
915e5146 | 3742 | } |
100382c7 HPN |
3743 | else if (strcmp (name, ".got.plt") == 0) |
3744 | { | |
3745 | /* The .got.plt contains the .got header as well as the | |
3746 | actual .got.plt contents. The .got header may contain a | |
3747 | R_CRIS_DTPMOD entry at index 3. */ | |
3748 | s->size += elf_cris_hash_table (info)->dtpmod_refcount != 0 | |
3749 | ? 8 : 0; | |
3750 | } | |
0112cd26 | 3751 | else if (CONST_STRNEQ (name, ".rela")) |
915e5146 | 3752 | { |
100382c7 HPN |
3753 | if (strcmp (name, ".rela.got") == 0 |
3754 | && elf_cris_hash_table (info)->dtpmod_refcount != 0 | |
3755 | && info->shared) | |
3756 | s->size += sizeof (Elf32_External_Rela); | |
3757 | ||
c456f082 | 3758 | if (s->size != 0) |
915e5146 | 3759 | { |
915e5146 HPN |
3760 | /* Remember whether there are any reloc sections other |
3761 | than .rela.plt. */ | |
3762 | if (strcmp (name, ".rela.plt") != 0) | |
b34976b6 | 3763 | relocs = TRUE; |
915e5146 | 3764 | |
915e5146 HPN |
3765 | /* We use the reloc_count field as a counter if we need |
3766 | to copy relocs into the output file. */ | |
3767 | s->reloc_count = 0; | |
3768 | } | |
3769 | } | |
0112cd26 | 3770 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 3771 | && strcmp (name, ".dynbss") != 0) |
915e5146 HPN |
3772 | { |
3773 | /* It's not one of our sections, so don't allocate space. */ | |
3774 | continue; | |
3775 | } | |
3776 | ||
c456f082 | 3777 | if (s->size == 0) |
915e5146 | 3778 | { |
c456f082 AM |
3779 | /* If we don't need this section, strip it from the |
3780 | output file. This is mostly to handle .rela.bss and | |
3781 | .rela.plt. We must create both sections in | |
3782 | create_dynamic_sections, because they must be created | |
3783 | before the linker maps input sections to output | |
3784 | sections. The linker does that before | |
3785 | adjust_dynamic_symbol is called, and it is that | |
3786 | function which decides whether anything needs to go | |
3787 | into these sections. */ | |
8423293d | 3788 | s->flags |= SEC_EXCLUDE; |
915e5146 HPN |
3789 | continue; |
3790 | } | |
3791 | ||
c456f082 AM |
3792 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3793 | continue; | |
3794 | ||
915e5146 HPN |
3795 | /* Allocate memory for the section contents. We use bfd_zalloc here |
3796 | in case unused entries are not reclaimed before the section's | |
3797 | contents are written out. This should not happen, but this way | |
3798 | if it does, we will not write out garbage. For reloc sections, | |
3799 | this will make entries have the type R_CRIS_NONE. */ | |
eea6121a | 3800 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 3801 | if (s->contents == NULL) |
b34976b6 | 3802 | return FALSE; |
915e5146 HPN |
3803 | } |
3804 | ||
3805 | if (elf_hash_table (info)->dynamic_sections_created) | |
3806 | { | |
3807 | /* Add some entries to the .dynamic section. We fill in the | |
3808 | values later, in elf_cris_finish_dynamic_sections, but we | |
3809 | must add the entries now so that we get the correct size for | |
3810 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3811 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3812 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3813 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3814 | |
915e5146 HPN |
3815 | if (!info->shared) |
3816 | { | |
dc810e39 | 3817 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3818 | return FALSE; |
915e5146 HPN |
3819 | } |
3820 | ||
3821 | if (plt) | |
3822 | { | |
dc810e39 AM |
3823 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3824 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3825 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3826 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3827 | return FALSE; |
915e5146 HPN |
3828 | } |
3829 | ||
3830 | if (relocs) | |
3831 | { | |
dc810e39 AM |
3832 | if (!add_dynamic_entry (DT_RELA, 0) |
3833 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3834 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3835 | return FALSE; |
915e5146 HPN |
3836 | } |
3837 | ||
99e4ae17 | 3838 | if ((info->flags & DF_TEXTREL) != 0) |
915e5146 | 3839 | { |
dc810e39 | 3840 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3841 | return FALSE; |
915e5146 HPN |
3842 | info->flags |= DF_TEXTREL; |
3843 | } | |
3844 | } | |
dc810e39 | 3845 | #undef add_dynamic_entry |
915e5146 | 3846 | |
b34976b6 | 3847 | return TRUE; |
915e5146 HPN |
3848 | } |
3849 | ||
3850 | /* This function is called via elf_cris_link_hash_traverse if we are | |
3851 | creating a shared object. In the -Bsymbolic case, it discards the | |
3852 | space allocated to copy PC relative relocs against symbols which | |
3853 | are defined in regular objects. For the normal non-symbolic case, | |
3854 | we also discard space for relocs that have become local due to | |
3855 | symbol visibility changes. We allocated space for them in the | |
3856 | check_relocs routine, but we won't fill them in in the | |
3857 | relocate_section routine. */ | |
3858 | ||
b34976b6 | 3859 | static bfd_boolean |
4d96d128 | 3860 | elf_cris_discard_excess_dso_dynamics (h, inf) |
915e5146 HPN |
3861 | struct elf_cris_link_hash_entry *h; |
3862 | PTR inf; | |
3863 | { | |
3864 | struct elf_cris_pcrel_relocs_copied *s; | |
3865 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3866 | ||
e92d460e AM |
3867 | if (h->root.root.type == bfd_link_hash_warning) |
3868 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
3869 | ||
915e5146 HPN |
3870 | /* If a symbol has been forced local or we have found a regular |
3871 | definition for the symbolic link case, then we won't be needing | |
3872 | any relocs. */ | |
f5385ebf AM |
3873 | if (h->root.def_regular |
3874 | && (h->root.forced_local | |
915e5146 HPN |
3875 | || info->symbolic)) |
3876 | { | |
3877 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 3878 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
0d08de41 HPN |
3879 | |
3880 | return TRUE; | |
3881 | } | |
3882 | ||
3883 | /* If we have accounted for PC-relative relocs for read-only | |
3884 | sections, now is the time to warn for them. We can't do it in | |
3885 | cris_elf_check_relocs, because we don't know the status of all | |
3886 | symbols at that time (and it's common to force symbols local | |
3887 | late). */ | |
3888 | ||
3889 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
3890 | { | |
3891 | BFD_ASSERT ((s->section->flags & SEC_READONLY) != 0); | |
3892 | ||
3893 | /* FIXME: How do we make this optionally a warning only? */ | |
3894 | (*_bfd_error_handler) | |
3895 | (_("%B, section `%A', to symbol `%s':\n" | |
3896 | " relocation %s should not be used" | |
3897 | " in a shared object; recompile with -fPIC"), | |
3898 | s->section->owner, | |
3899 | s->section, | |
3900 | h->root.root.root.string, | |
3901 | cris_elf_howto_table[s->r_type].name); | |
3902 | ||
3903 | info->flags |= DF_TEXTREL; | |
4d96d128 HPN |
3904 | } |
3905 | ||
b34976b6 | 3906 | return TRUE; |
4d96d128 HPN |
3907 | } |
3908 | ||
3909 | /* This function is called via elf_cris_link_hash_traverse if we are *not* | |
3910 | creating a shared object. We discard space for relocs for symbols put | |
3911 | in the .got, but which we found we do not have to resolve at run-time. */ | |
3912 | ||
b34976b6 | 3913 | static bfd_boolean |
4d96d128 HPN |
3914 | elf_cris_discard_excess_program_dynamics (h, inf) |
3915 | struct elf_cris_link_hash_entry *h; | |
3916 | PTR inf; | |
3917 | { | |
3918 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3919 | ||
e92d460e AM |
3920 | if (h->root.root.type == bfd_link_hash_warning) |
3921 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
3922 | ||
4d96d128 HPN |
3923 | /* If we're not creating a shared library and have a symbol which is |
3924 | referred to by .got references, but the symbol is defined locally, | |
e4a2175c HPN |
3925 | (or rather, not defined by a DSO) then lose the reloc for the .got |
3926 | (don't allocate room for it). Likewise for relocs for something | |
3927 | for which we create a PLT. */ | |
f5385ebf | 3928 | if (!h->root.def_dynamic |
e4a2175c | 3929 | || h->root.plt.refcount > 0) |
4d96d128 | 3930 | { |
100382c7 | 3931 | if (h->reg_got_refcount > 0 |
4d96d128 HPN |
3932 | /* The size of this section is only valid and in sync with the |
3933 | various reference counts if we do dynamic; don't decrement it | |
3934 | otherwise. */ | |
3935 | && elf_hash_table (info)->dynamic_sections_created) | |
3936 | { | |
3937 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
3938 | asection *srelgot; | |
3939 | ||
3940 | BFD_ASSERT (dynobj != NULL); | |
99c79b2e | 3941 | |
4d96d128 HPN |
3942 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
3943 | ||
3944 | BFD_ASSERT (srelgot != NULL); | |
3945 | ||
eea6121a | 3946 | srelgot->size -= sizeof (Elf32_External_Rela); |
4d96d128 HPN |
3947 | } |
3948 | ||
3949 | /* If the locally-defined symbol isn't used by a DSO, then we don't | |
3950 | have to export it as a dynamic symbol. This was already done for | |
3951 | functions; doing this for all symbols would presumably not | |
e5dfef09 HPN |
3952 | introduce new problems. Of course we don't do this if we're |
3953 | exporting all dynamic symbols. */ | |
0741c7be | 3954 | if (! info->export_dynamic |
77cfaee6 | 3955 | && h->root.dynindx != -1 |
f5385ebf AM |
3956 | && !h->root.def_dynamic |
3957 | && !h->root.ref_dynamic) | |
e5dfef09 HPN |
3958 | { |
3959 | h->root.dynindx = -1; | |
3960 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3961 | h->root.dynstr_index); | |
3962 | } | |
915e5146 HPN |
3963 | } |
3964 | ||
b34976b6 | 3965 | return TRUE; |
915e5146 HPN |
3966 | } |
3967 | ||
3968 | /* Reject a file depending on presence and expectation of prefixed | |
3969 | underscores on symbols. */ | |
4da81684 | 3970 | |
b34976b6 | 3971 | static bfd_boolean |
4da81684 HPN |
3972 | cris_elf_object_p (abfd) |
3973 | bfd *abfd; | |
3974 | { | |
bac23f82 HPN |
3975 | if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags)) |
3976 | return FALSE; | |
3977 | ||
4da81684 HPN |
3978 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)) |
3979 | return (bfd_get_symbol_leading_char (abfd) == '_'); | |
3980 | else | |
3981 | return (bfd_get_symbol_leading_char (abfd) == 0); | |
3982 | } | |
3983 | ||
bac23f82 HPN |
3984 | /* Mark presence or absence of leading underscore. Set machine type |
3985 | flags from mach type. */ | |
4da81684 HPN |
3986 | |
3987 | static void | |
3988 | cris_elf_final_write_processing (abfd, linker) | |
3989 | bfd *abfd; | |
b34976b6 | 3990 | bfd_boolean linker ATTRIBUTE_UNUSED; |
4da81684 | 3991 | { |
bac23f82 HPN |
3992 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; |
3993 | ||
3994 | e_flags &= ~EF_CRIS_UNDERSCORE; | |
4da81684 | 3995 | if (bfd_get_symbol_leading_char (abfd) == '_') |
bac23f82 HPN |
3996 | e_flags |= EF_CRIS_UNDERSCORE; |
3997 | ||
3998 | switch (bfd_get_mach (abfd)) | |
3999 | { | |
4000 | case bfd_mach_cris_v0_v10: | |
4001 | e_flags |= EF_CRIS_VARIANT_ANY_V0_V10; | |
4002 | break; | |
4003 | ||
4004 | case bfd_mach_cris_v10_v32: | |
4005 | e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32; | |
4006 | break; | |
4007 | ||
4008 | case bfd_mach_cris_v32: | |
4009 | e_flags |= EF_CRIS_VARIANT_V32; | |
4010 | break; | |
4011 | ||
4012 | default: | |
4013 | _bfd_abort (__FILE__, __LINE__, | |
4014 | _("Unexpected machine number")); | |
4015 | } | |
4016 | ||
4017 | elf_elfheader (abfd)->e_flags = e_flags; | |
4018 | } | |
4019 | ||
4020 | /* Set the mach type from e_flags value. */ | |
4021 | ||
4022 | static bfd_boolean | |
4023 | cris_elf_set_mach_from_flags (abfd, flags) | |
4024 | bfd *abfd; | |
4025 | unsigned long flags; | |
4026 | { | |
4027 | switch (flags & EF_CRIS_VARIANT_MASK) | |
4028 | { | |
4029 | case EF_CRIS_VARIANT_ANY_V0_V10: | |
4030 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10); | |
4031 | break; | |
4032 | ||
4033 | case EF_CRIS_VARIANT_V32: | |
4034 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32); | |
4035 | break; | |
4036 | ||
4037 | case EF_CRIS_VARIANT_COMMON_V10_V32: | |
4038 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32); | |
4039 | break; | |
4040 | ||
4041 | default: | |
4042 | /* Since we don't recognize them, we obviously can't support them | |
4043 | with this code; we'd have to require that all future handling | |
4044 | would be optional. */ | |
4045 | bfd_set_error (bfd_error_wrong_format); | |
4046 | return FALSE; | |
4047 | } | |
4048 | ||
4049 | return TRUE; | |
4da81684 HPN |
4050 | } |
4051 | ||
4052 | /* Display the flags field. */ | |
4053 | ||
b34976b6 | 4054 | static bfd_boolean |
4da81684 HPN |
4055 | cris_elf_print_private_bfd_data (abfd, ptr) |
4056 | bfd *abfd; | |
4057 | PTR ptr; | |
4058 | { | |
4059 | FILE *file = (FILE *) ptr; | |
4060 | ||
f12123c0 | 4061 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
4da81684 HPN |
4062 | |
4063 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4064 | ||
4065 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
4066 | ||
4067 | if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE) | |
4068 | fprintf (file, _(" [symbols have a _ prefix]")); | |
bac23f82 HPN |
4069 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) |
4070 | == EF_CRIS_VARIANT_COMMON_V10_V32) | |
4071 | fprintf (file, _(" [v10 and v32]")); | |
4072 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) | |
4073 | == EF_CRIS_VARIANT_V32) | |
4074 | fprintf (file, _(" [v32]")); | |
4da81684 HPN |
4075 | |
4076 | fputc ('\n', file); | |
b34976b6 | 4077 | return TRUE; |
4da81684 HPN |
4078 | } |
4079 | ||
4080 | /* Don't mix files with and without a leading underscore. */ | |
4081 | ||
b34976b6 | 4082 | static bfd_boolean |
4da81684 HPN |
4083 | cris_elf_merge_private_bfd_data (ibfd, obfd) |
4084 | bfd *ibfd; | |
4085 | bfd *obfd; | |
4086 | { | |
bac23f82 | 4087 | int imach, omach; |
4da81684 | 4088 | |
82e51918 | 4089 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 4090 | return FALSE; |
4da81684 HPN |
4091 | |
4092 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4093 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 4094 | return TRUE; |
4da81684 | 4095 | |
bac23f82 HPN |
4096 | imach = bfd_get_mach (ibfd); |
4097 | ||
4da81684 HPN |
4098 | if (! elf_flags_init (obfd)) |
4099 | { | |
4100 | /* This happens when ld starts out with a 'blank' output file. */ | |
b34976b6 | 4101 | elf_flags_init (obfd) = TRUE; |
4da81684 | 4102 | |
bac23f82 HPN |
4103 | /* We ignore the linker-set mach, and instead set it according to |
4104 | the first input file. This would also happen if we could | |
4105 | somehow filter out the OUTPUT_ARCH () setting from elf.sc. | |
4106 | This allows us to keep the same linker config across | |
4107 | cris(v0..v10) and crisv32. The drawback is that we can't force | |
4108 | the output type, which might be a sane thing to do for a | |
4109 | v10+v32 compatibility object. */ | |
4110 | if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
4111 | return FALSE; | |
4da81684 HPN |
4112 | } |
4113 | ||
bac23f82 HPN |
4114 | if (bfd_get_symbol_leading_char (ibfd) |
4115 | != bfd_get_symbol_leading_char (obfd)) | |
4da81684 HPN |
4116 | { |
4117 | (*_bfd_error_handler) | |
bac23f82 | 4118 | (bfd_get_symbol_leading_char (ibfd) == '_' |
d003868e AM |
4119 | ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols") |
4120 | : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"), | |
4121 | ibfd); | |
4da81684 | 4122 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4123 | return FALSE; |
4da81684 HPN |
4124 | } |
4125 | ||
bac23f82 HPN |
4126 | omach = bfd_get_mach (obfd); |
4127 | ||
4128 | if (imach != omach) | |
4129 | { | |
4130 | /* We can get an incompatible combination only if either is | |
4131 | bfd_mach_cris_v32, and the other one isn't compatible. */ | |
4132 | if ((imach == bfd_mach_cris_v32 | |
4133 | && omach != bfd_mach_cris_v10_v32) | |
4134 | || (omach == bfd_mach_cris_v32 | |
4135 | && imach != bfd_mach_cris_v10_v32)) | |
4136 | { | |
4137 | (*_bfd_error_handler) | |
4138 | ((imach == bfd_mach_cris_v32) | |
4139 | ? _("%B contains CRIS v32 code, incompatible" | |
4140 | " with previous objects") | |
4141 | : _("%B contains non-CRIS-v32 code, incompatible" | |
4142 | " with previous objects"), | |
4143 | ibfd); | |
4144 | bfd_set_error (bfd_error_bad_value); | |
4145 | return FALSE; | |
4146 | } | |
4147 | ||
4148 | /* We don't have to check the case where the input is compatible | |
4149 | with v10 and v32, because the output is already known to be set | |
4150 | to the other (compatible) mach. */ | |
4151 | if (omach == bfd_mach_cris_v10_v32 | |
4152 | && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
4153 | return FALSE; | |
4154 | } | |
4155 | ||
b34976b6 | 4156 | return TRUE; |
4da81684 | 4157 | } |
99e4ae17 | 4158 | |
bac23f82 HPN |
4159 | /* Do side-effects of e_flags copying to obfd. */ |
4160 | ||
4161 | static bfd_boolean | |
4162 | cris_elf_copy_private_bfd_data (ibfd, obfd) | |
4163 | bfd *ibfd; | |
4164 | bfd *obfd; | |
4165 | { | |
4166 | /* Call the base function. */ | |
4167 | if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd)) | |
4168 | return FALSE; | |
4169 | ||
4170 | /* If output is big-endian for some obscure reason, stop here. */ | |
4171 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE) | |
4172 | return FALSE; | |
4173 | ||
4174 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
4175 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
4176 | return TRUE; | |
4177 | ||
4178 | /* Do what we really came here for. */ | |
4179 | return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd)); | |
4180 | } | |
99e4ae17 AJ |
4181 | |
4182 | static enum elf_reloc_type_class | |
f51e552e AM |
4183 | elf_cris_reloc_type_class (rela) |
4184 | const Elf_Internal_Rela *rela; | |
99e4ae17 | 4185 | { |
100382c7 HPN |
4186 | enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info); |
4187 | switch (r_type) | |
99e4ae17 AJ |
4188 | { |
4189 | case R_CRIS_RELATIVE: | |
4190 | return reloc_class_relative; | |
4191 | case R_CRIS_JUMP_SLOT: | |
4192 | return reloc_class_plt; | |
4193 | case R_CRIS_COPY: | |
4194 | return reloc_class_copy; | |
4195 | default: | |
4196 | return reloc_class_normal; | |
4197 | } | |
4198 | } | |
100382c7 HPN |
4199 | |
4200 | /* The elf_backend_got_elt_size worker. For one symbol, we can have up to | |
4201 | two GOT entries from three types with two different sizes. We handle | |
4202 | it as a single entry, so we can use the regular offset-calculation | |
4203 | machinery. */ | |
4204 | ||
4205 | static bfd_vma | |
4206 | elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED, | |
4207 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
4208 | struct elf_link_hash_entry *hr, | |
4209 | bfd *ibfd, | |
4210 | unsigned long symndx) | |
4211 | { | |
4212 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr; | |
100382c7 HPN |
4213 | bfd_vma eltsiz = 0; |
4214 | ||
4215 | /* We may have one regular GOT entry or up to two TLS GOT | |
4216 | entries. */ | |
4217 | if (h == NULL) | |
4218 | { | |
b2e254f9 | 4219 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
100382c7 HPN |
4220 | bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd); |
4221 | ||
4222 | BFD_ASSERT (local_got_refcounts != NULL); | |
4223 | ||
4224 | if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0) | |
4225 | { | |
4226 | /* We can't have a variable referred to both as a regular | |
4227 | variable and through TLS relocs. */ | |
4228 | BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0 | |
4229 | && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0); | |
4230 | return 4; | |
4231 | } | |
4232 | ||
4233 | if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0) | |
4234 | eltsiz += 8; | |
4235 | ||
4236 | if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0) | |
4237 | eltsiz += 4; | |
4238 | } | |
4239 | else | |
4240 | { | |
4241 | struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h); | |
4242 | if (hh->reg_got_refcount > 0) | |
4243 | { | |
4244 | /* The actual error-on-input is emitted elsewhere. */ | |
4245 | BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0); | |
4246 | return 4; | |
4247 | } | |
4248 | ||
4249 | if (hh->dtp_refcount > 0) | |
4250 | eltsiz += 8; | |
4251 | ||
4252 | if (hh->tprel_refcount > 0) | |
4253 | eltsiz += 4; | |
4254 | } | |
4255 | ||
b2e254f9 HPN |
4256 | /* We're only called when h->got.refcount is non-zero, so we must |
4257 | have a non-zero size. */ | |
4258 | BFD_ASSERT (eltsiz != 0); | |
100382c7 HPN |
4259 | return eltsiz; |
4260 | } | |
06c15ad7 HPN |
4261 | \f |
4262 | #define ELF_ARCH bfd_arch_cris | |
4263 | #define ELF_MACHINE_CODE EM_CRIS | |
4264 | #define ELF_MAXPAGESIZE 0x2000 | |
4265 | ||
4266 | #define TARGET_LITTLE_SYM bfd_elf32_cris_vec | |
4267 | #define TARGET_LITTLE_NAME "elf32-cris" | |
4da81684 | 4268 | #define elf_symbol_leading_char 0 |
06c15ad7 HPN |
4269 | |
4270 | #define elf_info_to_howto_rel NULL | |
4271 | #define elf_info_to_howto cris_info_to_howto_rela | |
4272 | #define elf_backend_relocate_section cris_elf_relocate_section | |
4273 | #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook | |
4274 | #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook | |
4275 | #define elf_backend_check_relocs cris_elf_check_relocs | |
72209a1f HPN |
4276 | #define elf_backend_grok_prstatus cris_elf_grok_prstatus |
4277 | #define elf_backend_grok_psinfo cris_elf_grok_psinfo | |
06c15ad7 HPN |
4278 | |
4279 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4280 | #define elf_backend_can_refcount 1 |
06c15ad7 | 4281 | |
4da81684 HPN |
4282 | #define elf_backend_object_p cris_elf_object_p |
4283 | #define elf_backend_final_write_processing \ | |
4284 | cris_elf_final_write_processing | |
4285 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
4286 | cris_elf_print_private_bfd_data | |
4287 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
4288 | cris_elf_merge_private_bfd_data | |
bac23f82 HPN |
4289 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
4290 | cris_elf_copy_private_bfd_data | |
4da81684 | 4291 | |
06c15ad7 | 4292 | #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup |
157090f7 | 4293 | #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup |
06c15ad7 | 4294 | |
915e5146 HPN |
4295 | #define bfd_elf32_bfd_link_hash_table_create \ |
4296 | elf_cris_link_hash_table_create | |
4297 | #define elf_backend_adjust_dynamic_symbol \ | |
4298 | elf_cris_adjust_dynamic_symbol | |
237bc7f0 HPN |
4299 | #define elf_backend_copy_indirect_symbol \ |
4300 | elf_cris_copy_indirect_symbol | |
915e5146 HPN |
4301 | #define elf_backend_size_dynamic_sections \ |
4302 | elf_cris_size_dynamic_sections | |
74541ad4 | 4303 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
915e5146 HPN |
4304 | #define elf_backend_finish_dynamic_symbol \ |
4305 | elf_cris_finish_dynamic_symbol | |
4306 | #define elf_backend_finish_dynamic_sections \ | |
4307 | elf_cris_finish_dynamic_sections | |
4308 | #define elf_backend_create_dynamic_sections \ | |
4309 | _bfd_elf_create_dynamic_sections | |
4310 | #define bfd_elf32_bfd_final_link \ | |
c152c796 | 4311 | bfd_elf_gc_common_final_link |
915e5146 | 4312 | #define elf_backend_hide_symbol elf_cris_hide_symbol |
99e4ae17 | 4313 | #define elf_backend_reloc_type_class elf_cris_reloc_type_class |
915e5146 HPN |
4314 | |
4315 | #define elf_backend_want_got_plt 1 | |
4316 | #define elf_backend_plt_readonly 1 | |
4317 | #define elf_backend_want_plt_sym 0 | |
4318 | #define elf_backend_got_header_size 12 | |
100382c7 | 4319 | #define elf_backend_got_elt_size elf_cris_got_elt_size |
915e5146 | 4320 | |
06c15ad7 HPN |
4321 | /* Later, we my want to optimize RELA entries into REL entries for dynamic |
4322 | linking and libraries (if it's a win of any significance). Until then, | |
4323 | take the easy route. */ | |
4324 | #define elf_backend_may_use_rel_p 0 | |
4325 | #define elf_backend_may_use_rela_p 1 | |
f0fe0e16 | 4326 | #define elf_backend_rela_normal 1 |
06c15ad7 HPN |
4327 | |
4328 | #include "elf32-target.h" | |
4da81684 | 4329 | |
4da81684 HPN |
4330 | #undef TARGET_LITTLE_SYM |
4331 | #undef TARGET_LITTLE_NAME | |
4332 | #undef elf_symbol_leading_char | |
4333 | ||
4334 | #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec | |
4335 | #define TARGET_LITTLE_NAME "elf32-us-cris" | |
4336 | #define elf_symbol_leading_char '_' | |
16cecee5 L |
4337 | #undef elf32_bed |
4338 | #define elf32_bed elf32_us_cris_bed | |
4da81684 HPN |
4339 | |
4340 | #include "elf32-target.h" |