Commit | Line | Data |
---|---|---|
06c15ad7 | 1 | /* CRIS-specific support for 32-bit ELF. |
b2a8e766 | 2 | Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
06c15ad7 HPN |
3 | Contributed by Axis Communications AB. |
4 | Written by Hans-Peter Nilsson, based on elf32-fr30.c | |
915e5146 | 5 | PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c. |
06c15ad7 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
06c15ad7 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
06c15ad7 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
06c15ad7 | 18 | |
ae9a127f NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
06c15ad7 HPN |
22 | |
23 | #include "bfd.h" | |
24 | #include "sysdep.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/cris.h" | |
28 | ||
29 | /* Forward declarations. */ | |
30 | static reloc_howto_type * cris_reloc_type_lookup | |
31 | PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); | |
32 | ||
a7c10850 | 33 | static void cris_info_to_howto_rela |
947216bf | 34 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
06c15ad7 | 35 | |
bac23f82 HPN |
36 | static bfd_reloc_status_type cris_elf_pcrel_reloc |
37 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
38 | ||
b34976b6 | 39 | static bfd_boolean cris_elf_grok_prstatus |
72209a1f HPN |
40 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
41 | ||
b34976b6 | 42 | static bfd_boolean cris_elf_grok_psinfo |
72209a1f HPN |
43 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
44 | ||
b34976b6 | 45 | static bfd_boolean cris_elf_relocate_section |
06c15ad7 HPN |
46 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
47 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
48 | ||
49 | static bfd_reloc_status_type cris_final_link_relocate | |
50 | PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, | |
51 | Elf_Internal_Rela *, bfd_vma)); | |
52 | ||
b34976b6 | 53 | static bfd_boolean cris_elf_gc_sweep_hook |
06c15ad7 HPN |
54 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
55 | const Elf_Internal_Rela *)); | |
56 | ||
57 | static asection * cris_elf_gc_mark_hook | |
1e2f5b6e | 58 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
06c15ad7 HPN |
59 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
60 | ||
b34976b6 | 61 | static bfd_boolean cris_elf_object_p PARAMS ((bfd *)); |
4da81684 | 62 | |
b34976b6 | 63 | static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean)); |
4da81684 | 64 | |
bac23f82 HPN |
65 | static bfd_boolean cris_elf_set_mach_from_flags |
66 | PARAMS ((bfd *, unsigned long int)); | |
67 | ||
b34976b6 | 68 | static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); |
4da81684 | 69 | |
b34976b6 | 70 | static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); |
bac23f82 | 71 | static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); |
4da81684 | 72 | |
915e5146 | 73 | struct elf_cris_link_hash_entry; |
b34976b6 | 74 | static bfd_boolean elf_cris_discard_excess_dso_dynamics |
4d96d128 | 75 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 76 | static bfd_boolean elf_cris_discard_excess_program_dynamics |
915e5146 | 77 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 78 | static bfd_boolean elf_cris_adjust_gotplt_to_got |
915e5146 | 79 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
b34976b6 | 80 | static bfd_boolean elf_cris_try_fold_plt_to_got |
915e5146 HPN |
81 | PARAMS ((struct elf_cris_link_hash_entry *, PTR)); |
82 | static struct bfd_hash_entry *elf_cris_link_hash_newfunc | |
83 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
84 | static struct bfd_link_hash_table *elf_cris_link_hash_table_create | |
85 | PARAMS ((bfd *)); | |
b34976b6 | 86 | static bfd_boolean elf_cris_adjust_dynamic_symbol |
915e5146 | 87 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 88 | static bfd_boolean cris_elf_check_relocs |
99c79b2e AJ |
89 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
90 | const Elf_Internal_Rela *)); | |
91 | ||
b34976b6 | 92 | static bfd_boolean elf_cris_size_dynamic_sections |
915e5146 | 93 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 94 | static bfd_boolean elf_cris_finish_dynamic_symbol |
915e5146 HPN |
95 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
96 | Elf_Internal_Sym *)); | |
b34976b6 | 97 | static bfd_boolean elf_cris_finish_dynamic_sections |
915e5146 HPN |
98 | PARAMS ((bfd *, struct bfd_link_info *)); |
99 | static void elf_cris_hide_symbol | |
b34976b6 | 100 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean)); |
99e4ae17 | 101 | static enum elf_reloc_type_class elf_cris_reloc_type_class |
f51e552e | 102 | PARAMS ((const Elf_Internal_Rela *)); |
915e5146 | 103 | |
06c15ad7 HPN |
104 | static reloc_howto_type cris_elf_howto_table [] = |
105 | { | |
106 | /* This reloc does nothing. */ | |
107 | HOWTO (R_CRIS_NONE, /* type */ | |
108 | 0, /* rightshift */ | |
109 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
110 | 32, /* bitsize */ | |
b34976b6 | 111 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
112 | 0, /* bitpos */ |
113 | complain_overflow_bitfield, /* complain_on_overflow */ | |
114 | bfd_elf_generic_reloc, /* special_function */ | |
115 | "R_CRIS_NONE", /* name */ | |
b34976b6 | 116 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
117 | 0, /* src_mask */ |
118 | 0, /* dst_mask */ | |
b34976b6 | 119 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
120 | |
121 | /* An 8 bit absolute relocation. */ | |
122 | HOWTO (R_CRIS_8, /* type */ | |
123 | 0, /* rightshift */ | |
124 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
125 | 8, /* bitsize */ | |
b34976b6 | 126 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
127 | 0, /* bitpos */ |
128 | complain_overflow_bitfield, /* complain_on_overflow */ | |
129 | bfd_elf_generic_reloc, /* special_function */ | |
130 | "R_CRIS_8", /* name */ | |
b34976b6 | 131 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
132 | 0x0000, /* src_mask */ |
133 | 0x00ff, /* dst_mask */ | |
b34976b6 | 134 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
135 | |
136 | /* A 16 bit absolute relocation. */ | |
137 | HOWTO (R_CRIS_16, /* type */ | |
138 | 0, /* rightshift */ | |
139 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
140 | 16, /* bitsize */ | |
b34976b6 | 141 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
142 | 0, /* bitpos */ |
143 | complain_overflow_bitfield, /* complain_on_overflow */ | |
144 | bfd_elf_generic_reloc, /* special_function */ | |
145 | "R_CRIS_16", /* name */ | |
b34976b6 | 146 | FALSE, /* partial_inplace */ |
06c15ad7 HPN |
147 | 0x00000000, /* src_mask */ |
148 | 0x0000ffff, /* dst_mask */ | |
b34976b6 | 149 | FALSE), /* pcrel_offset */ |
06c15ad7 HPN |
150 | |
151 | /* A 32 bit absolute relocation. */ | |
152 | HOWTO (R_CRIS_32, /* type */ | |
153 | 0, /* rightshift */ | |
154 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
155 | 32, /* bitsize */ | |
b34976b6 | 156 | FALSE, /* pc_relative */ |
06c15ad7 HPN |
157 | 0, /* bitpos */ |
158 | complain_overflow_bitfield, /* complain_on_overflow */ | |
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 */ | |
b34976b6 | 413 | TRUE) /* pcrel_offset */ |
06c15ad7 HPN |
414 | }; |
415 | \f | |
416 | /* Map BFD reloc types to CRIS ELF reloc types. */ | |
417 | ||
418 | struct cris_reloc_map | |
419 | { | |
420 | bfd_reloc_code_real_type bfd_reloc_val; | |
421 | unsigned int cris_reloc_val; | |
422 | }; | |
423 | ||
424 | static const struct cris_reloc_map cris_reloc_map [] = | |
425 | { | |
426 | { BFD_RELOC_NONE, R_CRIS_NONE }, | |
427 | { BFD_RELOC_8, R_CRIS_8 }, | |
428 | { BFD_RELOC_16, R_CRIS_16 }, | |
429 | { BFD_RELOC_32, R_CRIS_32 }, | |
430 | { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL }, | |
431 | { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL }, | |
432 | { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL }, | |
433 | { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT }, | |
915e5146 HPN |
434 | { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY }, |
435 | { BFD_RELOC_CRIS_COPY, R_CRIS_COPY }, | |
436 | { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT }, | |
437 | { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT }, | |
438 | { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE }, | |
439 | { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT }, | |
440 | { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT }, | |
441 | { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT }, | |
442 | { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT }, | |
443 | { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL }, | |
444 | { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL }, | |
445 | { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL } | |
06c15ad7 HPN |
446 | }; |
447 | ||
448 | static reloc_howto_type * | |
449 | cris_reloc_type_lookup (abfd, code) | |
450 | bfd * abfd ATTRIBUTE_UNUSED; | |
451 | bfd_reloc_code_real_type code; | |
452 | { | |
908d94bf | 453 | unsigned int i; |
06c15ad7 | 454 | |
908d94bf | 455 | for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++) |
06c15ad7 HPN |
456 | if (cris_reloc_map [i].bfd_reloc_val == code) |
457 | return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val]; | |
a7c10850 | 458 | |
06c15ad7 HPN |
459 | return NULL; |
460 | } | |
461 | ||
462 | /* Set the howto pointer for an CRIS ELF reloc. */ | |
463 | ||
464 | static void | |
465 | cris_info_to_howto_rela (abfd, cache_ptr, dst) | |
466 | bfd * abfd ATTRIBUTE_UNUSED; | |
467 | arelent * cache_ptr; | |
947216bf | 468 | Elf_Internal_Rela * dst; |
06c15ad7 HPN |
469 | { |
470 | unsigned int r_type; | |
471 | ||
472 | r_type = ELF32_R_TYPE (dst->r_info); | |
473 | BFD_ASSERT (r_type < (unsigned int) R_CRIS_max); | |
474 | cache_ptr->howto = & cris_elf_howto_table [r_type]; | |
475 | } | |
bac23f82 HPN |
476 | |
477 | bfd_reloc_status_type | |
478 | cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section, | |
479 | output_bfd, error_message) | |
480 | bfd *abfd ATTRIBUTE_UNUSED; | |
481 | arelent *reloc_entry; | |
482 | asymbol *symbol; | |
483 | PTR data ATTRIBUTE_UNUSED; | |
484 | asection *input_section; | |
485 | bfd *output_bfd; | |
486 | char **error_message ATTRIBUTE_UNUSED; | |
487 | { | |
488 | /* By default (using only bfd_elf_generic_reloc when linking to | |
489 | non-ELF formats) PC-relative relocs are relative to the beginning | |
490 | of the reloc. CRIS PC-relative relocs are relative to the position | |
491 | *after* the reloc because that's what pre-CRISv32 PC points to | |
492 | after reading an insn field with that reloc. (For CRISv32, PC is | |
493 | actually relative to the start of the insn, but we keep the old | |
494 | definition.) Still, we use as much generic machinery as we can. | |
495 | ||
496 | Only adjust when doing a final link. */ | |
497 | if (output_bfd == (bfd *) NULL) | |
498 | reloc_entry->addend -= 1 << reloc_entry->howto->size; | |
499 | ||
500 | return | |
501 | bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
502 | input_section, output_bfd, error_message); | |
503 | } | |
06c15ad7 | 504 | \f |
bac23f82 HPN |
505 | /* Support for core dump NOTE sections. |
506 | The slightly unintuitive code layout is an attempt to keep at least | |
507 | some similarities with other ports, hoping to simplify general | |
508 | changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */ | |
72209a1f | 509 | |
b34976b6 | 510 | static bfd_boolean |
72209a1f HPN |
511 | cris_elf_grok_prstatus (abfd, note) |
512 | bfd *abfd; | |
513 | Elf_Internal_Note *note; | |
514 | { | |
515 | int offset; | |
eea6121a | 516 | size_t size; |
72209a1f | 517 | |
bac23f82 HPN |
518 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
519 | switch (note->descsz) | |
520 | { | |
521 | default: | |
522 | return FALSE; | |
523 | ||
524 | case 202: /* Linux/CRISv32 */ | |
525 | /* pr_cursig */ | |
526 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
527 | ||
528 | /* pr_pid */ | |
529 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22); | |
530 | ||
531 | /* pr_reg */ | |
532 | offset = 70; | |
533 | size = 128; | |
534 | ||
535 | break; | |
536 | } | |
537 | else | |
538 | switch (note->descsz) | |
539 | { | |
72209a1f | 540 | default: |
b34976b6 | 541 | return FALSE; |
72209a1f | 542 | |
bc0d28ee | 543 | case 214: /* Linux/CRIS */ |
72209a1f HPN |
544 | /* pr_cursig */ |
545 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
546 | ||
547 | /* pr_pid */ | |
548 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22); | |
549 | ||
550 | /* pr_reg */ | |
551 | offset = 70; | |
eea6121a | 552 | size = 140; |
72209a1f HPN |
553 | |
554 | break; | |
bac23f82 | 555 | } |
72209a1f HPN |
556 | |
557 | /* Make a ".reg/999" section. */ | |
558 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 559 | size, note->descpos + offset); |
72209a1f HPN |
560 | } |
561 | ||
b34976b6 | 562 | static bfd_boolean |
72209a1f HPN |
563 | cris_elf_grok_psinfo (abfd, note) |
564 | bfd *abfd; | |
565 | Elf_Internal_Note *note; | |
566 | { | |
bac23f82 HPN |
567 | if (bfd_get_mach (abfd) == bfd_mach_cris_v32) |
568 | switch (note->descsz) | |
569 | { | |
570 | default: | |
571 | return FALSE; | |
572 | ||
573 | case 124: /* Linux/CRISv32 elf_prpsinfo */ | |
574 | elf_tdata (abfd)->core_program | |
575 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
576 | elf_tdata (abfd)->core_command | |
577 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
578 | } | |
579 | else | |
580 | switch (note->descsz) | |
581 | { | |
72209a1f | 582 | default: |
b34976b6 | 583 | return FALSE; |
72209a1f HPN |
584 | |
585 | case 124: /* Linux/CRIS elf_prpsinfo */ | |
586 | elf_tdata (abfd)->core_program | |
bac23f82 | 587 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
72209a1f | 588 | elf_tdata (abfd)->core_command |
bac23f82 HPN |
589 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
590 | } | |
72209a1f HPN |
591 | |
592 | /* Note that for some reason, a spurious space is tacked | |
593 | onto the end of the args in some (at least one anyway) | |
594 | implementations, so strip it off if it exists. */ | |
595 | ||
596 | { | |
597 | char *command = elf_tdata (abfd)->core_command; | |
598 | int n = strlen (command); | |
599 | ||
600 | if (0 < n && command[n - 1] == ' ') | |
601 | command[n - 1] = '\0'; | |
602 | } | |
603 | ||
b34976b6 | 604 | return TRUE; |
72209a1f HPN |
605 | } |
606 | \f | |
915e5146 HPN |
607 | /* The name of the dynamic interpreter. This is put in the .interp |
608 | section. */ | |
609 | ||
610 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
611 | ||
612 | /* The size in bytes of an entry in the procedure linkage table. */ | |
613 | ||
614 | #define PLT_ENTRY_SIZE 20 | |
bac23f82 | 615 | #define PLT_ENTRY_SIZE_V32 26 |
915e5146 HPN |
616 | |
617 | /* The first entry in an absolute procedure linkage table looks like this. */ | |
618 | ||
619 | static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] = | |
620 | { | |
621 | 0xfc, 0xe1, | |
cedb70c5 | 622 | 0x7e, 0x7e, /* push mof. */ |
915e5146 HPN |
623 | 0x7f, 0x0d, /* (dip [pc+]) */ |
624 | 0, 0, 0, 0, /* Replaced with address of .got + 4. */ | |
625 | 0x30, 0x7a, /* move [...],mof */ | |
626 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
627 | 0, 0, 0, 0, /* Replaced with address of .got + 8. */ | |
bac23f82 HPN |
628 | 0x30, 0x09 /* jump [...] */ |
629 | }; | |
630 | ||
631 | static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = | |
632 | { | |
633 | 0x84, 0xe2, /* subq 4,$sp */ | |
634 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
635 | 0, 0, 0, 0, /* Replaced by address of .got + 4. */ | |
636 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
637 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
638 | 0x04, 0xf2, /* addq 4,acr */ | |
639 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
640 | 0xbf, 0x09, /* jump $acr */ | |
641 | 0xb0, 0x05, /* nop */ | |
642 | 0, 0 /* Pad out to 26 bytes. */ | |
915e5146 HPN |
643 | }; |
644 | ||
645 | /* Subsequent entries in an absolute procedure linkage table look like | |
646 | this. */ | |
647 | ||
648 | static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] = | |
649 | { | |
650 | 0x7f, 0x0d, /* (dip [pc+]) */ | |
651 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
652 | 0x30, 0x09, /* jump [...] */ | |
653 | 0x3f, 0x7e, /* move [pc+],mof */ | |
654 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
655 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
656 | 0xec, 0xff, | |
657 | 0xff, 0xff /* Replaced with offset to start of .plt. */ | |
658 | }; | |
659 | ||
bac23f82 HPN |
660 | static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] = |
661 | { | |
662 | 0x6f, 0xfe, /* move.d 0,$acr */ | |
663 | 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ | |
664 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
665 | 0xbf, 0x09, /* jump $acr */ | |
666 | 0xb0, 0x05, /* nop */ | |
667 | 0x3f, 0x7e, /* move 0,mof */ | |
668 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
669 | 0xbf, 0x0e, /* ba start_of_plt0_entry */ | |
670 | 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */ | |
671 | 0xb0, 0x05 /* nop */ | |
672 | }; | |
673 | ||
915e5146 HPN |
674 | /* The first entry in a PIC procedure linkage table looks like this. */ |
675 | ||
676 | static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
677 | { | |
678 | 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */ | |
679 | 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */ | |
680 | 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */ | |
681 | 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */ | |
682 | }; | |
683 | ||
bac23f82 HPN |
684 | static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = |
685 | { | |
686 | 0x84, 0xe2, /* subq 4,$sp */ | |
687 | 0x04, 0x01, /* addoq 4,$r0,$acr */ | |
688 | 0x7e, 0x7a, /* move $mof,[$sp] */ | |
689 | 0x3f, 0x7a, /* move [$acr],$mof */ | |
690 | 0x04, 0xf2, /* addq 4,$acr */ | |
691 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
692 | 0xbf, 0x09, /* jump $acr */ | |
693 | 0xb0, 0x05, /* nop */ | |
694 | 0, 0, /* Pad out to 26 bytes. */ | |
695 | 0, 0, 0, 0, | |
696 | 0, 0, 0, 0 | |
697 | }; | |
698 | ||
915e5146 HPN |
699 | /* Subsequent entries in a PIC procedure linkage table look like this. */ |
700 | ||
701 | static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] = | |
702 | { | |
703 | 0x6f, 0x0d, /* (bdap [pc+].d,r0) */ | |
704 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
705 | 0x30, 0x09, /* jump [...] */ | |
706 | 0x3f, 0x7e, /* move [pc+],mof */ | |
707 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
708 | 0x2f, 0xfe, /* add.d [pc+],pc */ | |
709 | 0xec, 0xff, /* Replaced with offset to start of .plt. */ | |
710 | 0xff, 0xff | |
711 | }; | |
bac23f82 HPN |
712 | |
713 | static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] = | |
714 | { | |
715 | 0x6f, 0x0d, /* addo.d 0,$r0,$acr */ | |
716 | 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ | |
717 | 0x6f, 0xfa, /* move.d [$acr],$acr */ | |
718 | 0xbf, 0x09, /* jump $acr */ | |
719 | 0xb0, 0x05, /* nop */ | |
720 | 0x3f, 0x7e, /* move relocoffs,$mof */ | |
721 | 0, 0, 0, 0, /* Replaced with offset into relocation table. */ | |
722 | 0xbf, 0x0e, /* ba start_of_plt */ | |
723 | 0, 0, 0, 0, /* Replaced with offset to start of .plt. */ | |
724 | 0xb0, 0x05 /* nop */ | |
725 | }; | |
915e5146 HPN |
726 | \f |
727 | /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits | |
728 | (and most other PIC/shlib stuff). Check that we don't drift away | |
729 | without reason. | |
730 | ||
731 | The CRIS linker, like the m68k and i386 linkers (and probably the rest | |
732 | too) needs to keep track of the number of relocs that it decides to | |
733 | copy in check_relocs for each symbol. This is so that it can discard | |
734 | PC relative relocs if it doesn't need them when linking with | |
735 | -Bsymbolic. We store the information in a field extending the regular | |
736 | ELF linker hash table. */ | |
737 | ||
738 | /* This structure keeps track of the number of PC relative relocs we have | |
739 | copied for a given symbol. */ | |
740 | ||
741 | struct elf_cris_pcrel_relocs_copied | |
742 | { | |
743 | /* Next section. */ | |
744 | struct elf_cris_pcrel_relocs_copied *next; | |
745 | /* A section in dynobj. */ | |
746 | asection *section; | |
747 | /* Number of relocs copied in this section. */ | |
748 | bfd_size_type count; | |
749 | }; | |
750 | ||
751 | /* CRIS ELF linker hash entry. */ | |
752 | ||
753 | struct elf_cris_link_hash_entry | |
754 | { | |
755 | struct elf_link_hash_entry root; | |
756 | ||
757 | /* Number of PC relative relocs copied for this symbol. */ | |
758 | struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied; | |
759 | ||
760 | /* The GOTPLT references are CRIS-specific; the goal is to avoid having | |
761 | both a general GOT and a PLT-specific GOT entry for the same symbol, | |
762 | when it is referenced both as a function and as a function pointer. | |
763 | ||
764 | Number of GOTPLT references for a function. */ | |
765 | bfd_signed_vma gotplt_refcount; | |
766 | ||
767 | /* Actual GOTPLT index for this symbol, if applicable, or zero if not | |
768 | (zero is never used as an index). FIXME: We should be able to fold | |
769 | this with gotplt_refcount in a union, like the got and plt unions in | |
770 | elf_link_hash_entry. */ | |
771 | bfd_size_type gotplt_offset; | |
772 | }; | |
773 | ||
774 | /* CRIS ELF linker hash table. */ | |
775 | ||
776 | struct elf_cris_link_hash_table | |
777 | { | |
778 | struct elf_link_hash_table root; | |
779 | ||
780 | /* We can't use the PLT offset and calculate to get the GOTPLT offset, | |
781 | since we try and avoid creating GOTPLT:s when there's already a GOT. | |
782 | Instead, we keep and update the next available index here. */ | |
783 | bfd_size_type next_gotplt_entry; | |
784 | }; | |
785 | ||
786 | /* Traverse a CRIS ELF linker hash table. */ | |
787 | ||
788 | #define elf_cris_link_hash_traverse(table, func, info) \ | |
789 | (elf_link_hash_traverse \ | |
790 | (&(table)->root, \ | |
b34976b6 | 791 | (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
915e5146 HPN |
792 | (info))) |
793 | ||
794 | /* Get the CRIS ELF linker hash table from a link_info structure. */ | |
795 | ||
796 | #define elf_cris_hash_table(p) \ | |
797 | ((struct elf_cris_link_hash_table *) (p)->hash) | |
798 | ||
799 | /* Create an entry in a CRIS ELF linker hash table. */ | |
800 | ||
801 | static struct bfd_hash_entry * | |
802 | elf_cris_link_hash_newfunc (entry, table, string) | |
803 | struct bfd_hash_entry *entry; | |
804 | struct bfd_hash_table *table; | |
805 | const char *string; | |
806 | { | |
807 | struct elf_cris_link_hash_entry *ret = | |
808 | (struct elf_cris_link_hash_entry *) entry; | |
809 | ||
810 | /* Allocate the structure if it has not already been allocated by a | |
811 | subclass. */ | |
812 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
813 | ret = ((struct elf_cris_link_hash_entry *) | |
814 | bfd_hash_allocate (table, | |
815 | sizeof (struct elf_cris_link_hash_entry))); | |
816 | if (ret == (struct elf_cris_link_hash_entry *) NULL) | |
817 | return (struct bfd_hash_entry *) ret; | |
818 | ||
819 | /* Call the allocation method of the superclass. */ | |
820 | ret = ((struct elf_cris_link_hash_entry *) | |
821 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
822 | table, string)); | |
823 | if (ret != (struct elf_cris_link_hash_entry *) NULL) | |
824 | { | |
825 | ret->pcrel_relocs_copied = NULL; | |
826 | ret->gotplt_refcount = 0; | |
827 | ret->gotplt_offset = 0; | |
828 | } | |
829 | ||
830 | return (struct bfd_hash_entry *) ret; | |
831 | } | |
832 | ||
833 | /* Create a CRIS ELF linker hash table. */ | |
834 | ||
835 | static struct bfd_link_hash_table * | |
836 | elf_cris_link_hash_table_create (abfd) | |
837 | bfd *abfd; | |
838 | { | |
839 | struct elf_cris_link_hash_table *ret; | |
dc810e39 | 840 | bfd_size_type amt = sizeof (struct elf_cris_link_hash_table); |
915e5146 | 841 | |
e2d34d7d | 842 | ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt)); |
915e5146 HPN |
843 | if (ret == (struct elf_cris_link_hash_table *) NULL) |
844 | return NULL; | |
845 | ||
846 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
847 | elf_cris_link_hash_newfunc)) | |
848 | { | |
e2d34d7d | 849 | free (ret); |
915e5146 HPN |
850 | return NULL; |
851 | } | |
852 | ||
853 | /* Initialize to skip over the first three entries in the gotplt; they | |
854 | are used for run-time symbol evaluation. */ | |
855 | ret->next_gotplt_entry = 12; | |
856 | ||
857 | return &ret->root.root; | |
858 | } | |
859 | \f | |
06c15ad7 | 860 | /* Perform a single relocation. By default we use the standard BFD |
915e5146 | 861 | routines, with a few tweaks. */ |
06c15ad7 HPN |
862 | |
863 | static bfd_reloc_status_type | |
864 | cris_final_link_relocate (howto, input_bfd, input_section, contents, rel, | |
865 | relocation) | |
866 | reloc_howto_type * howto; | |
867 | bfd * input_bfd; | |
868 | asection * input_section; | |
869 | bfd_byte * contents; | |
870 | Elf_Internal_Rela * rel; | |
871 | bfd_vma relocation; | |
872 | { | |
915e5146 HPN |
873 | bfd_reloc_status_type r; |
874 | ||
875 | /* PC-relative relocations are relative to the position *after* | |
876 | the reloc. Note that for R_CRIS_8_PCREL the adjustment is | |
877 | not a single byte, since PC must be 16-bit-aligned. */ | |
878 | switch (ELF32_R_TYPE (rel->r_info)) | |
879 | { | |
880 | /* Check that the 16-bit GOT relocs are positive. */ | |
881 | case R_CRIS_16_GOTPLT: | |
882 | case R_CRIS_16_GOT: | |
883 | if ((bfd_signed_vma) relocation < 0) | |
884 | return bfd_reloc_overflow; | |
885 | break; | |
886 | ||
887 | case R_CRIS_32_PLT_PCREL: | |
888 | case R_CRIS_32_PCREL: | |
889 | relocation -= 2; | |
890 | /* Fall through. */ | |
891 | case R_CRIS_8_PCREL: | |
892 | case R_CRIS_16_PCREL: | |
893 | relocation -= 2; | |
894 | break; | |
895 | ||
896 | default: | |
897 | break; | |
898 | } | |
899 | ||
900 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
06c15ad7 HPN |
901 | contents, rel->r_offset, |
902 | relocation, rel->r_addend); | |
903 | return r; | |
904 | } | |
905 | \f | |
906 | /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was | |
907 | copied, for further comments. */ | |
908 | ||
b34976b6 | 909 | static bfd_boolean |
06c15ad7 HPN |
910 | cris_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
911 | contents, relocs, local_syms, local_sections) | |
b34976b6 AM |
912 | bfd *output_bfd ATTRIBUTE_UNUSED; |
913 | struct bfd_link_info *info; | |
914 | bfd *input_bfd; | |
915 | asection *input_section; | |
916 | bfd_byte *contents; | |
917 | Elf_Internal_Rela *relocs; | |
918 | Elf_Internal_Sym *local_syms; | |
919 | asection **local_sections; | |
06c15ad7 | 920 | { |
915e5146 | 921 | bfd *dynobj; |
b34976b6 AM |
922 | Elf_Internal_Shdr *symtab_hdr; |
923 | struct elf_link_hash_entry **sym_hashes; | |
915e5146 HPN |
924 | bfd_vma *local_got_offsets; |
925 | asection *sgot; | |
926 | asection *splt; | |
927 | asection *sreloc; | |
b34976b6 AM |
928 | Elf_Internal_Rela *rel; |
929 | Elf_Internal_Rela *relend; | |
06c15ad7 | 930 | |
1049f94e | 931 | if (info->relocatable) |
b34976b6 | 932 | return TRUE; |
f0fe0e16 | 933 | |
915e5146 HPN |
934 | dynobj = elf_hash_table (info)->dynobj; |
935 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
06c15ad7 HPN |
936 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
937 | sym_hashes = elf_sym_hashes (input_bfd); | |
938 | relend = relocs + input_section->reloc_count; | |
939 | ||
915e5146 HPN |
940 | sgot = NULL; |
941 | splt = NULL; | |
942 | sreloc = NULL; | |
943 | ||
944 | if (dynobj != NULL) | |
945 | { | |
946 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
947 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
948 | } | |
949 | ||
06c15ad7 HPN |
950 | for (rel = relocs; rel < relend; rel ++) |
951 | { | |
b34976b6 AM |
952 | reloc_howto_type *howto; |
953 | unsigned long r_symndx; | |
954 | Elf_Internal_Sym *sym; | |
955 | asection *sec; | |
956 | struct elf_link_hash_entry *h; | |
957 | bfd_vma relocation; | |
958 | bfd_reloc_status_type r; | |
959 | const char *symname = NULL; | |
960 | int r_type; | |
a7c10850 | 961 | |
06c15ad7 | 962 | r_type = ELF32_R_TYPE (rel->r_info); |
a7c10850 | 963 | |
06c15ad7 HPN |
964 | if ( r_type == R_CRIS_GNU_VTINHERIT |
965 | || r_type == R_CRIS_GNU_VTENTRY) | |
966 | continue; | |
a7c10850 | 967 | |
06c15ad7 | 968 | /* This is a final link. */ |
f0fe0e16 | 969 | r_symndx = ELF32_R_SYM (rel->r_info); |
915e5146 | 970 | howto = cris_elf_howto_table + r_type; |
06c15ad7 HPN |
971 | h = NULL; |
972 | sym = NULL; | |
973 | sec = NULL; | |
a7c10850 | 974 | |
06c15ad7 HPN |
975 | if (r_symndx < symtab_hdr->sh_info) |
976 | { | |
977 | sym = local_syms + r_symndx; | |
978 | sec = local_sections [r_symndx]; | |
8517fae7 | 979 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
a7c10850 | 980 | |
dc810e39 AM |
981 | symname = (bfd_elf_string_from_elf_section |
982 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
983 | if (symname == NULL) | |
984 | symname = bfd_section_name (input_bfd, sec); | |
06c15ad7 HPN |
985 | } |
986 | else | |
987 | { | |
560e09e9 NC |
988 | bfd_boolean warned; |
989 | bfd_boolean unresolved_reloc; | |
0a4787a0 | 990 | |
b2a8e766 AM |
991 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
992 | r_symndx, symtab_hdr, sym_hashes, | |
993 | h, sec, relocation, | |
994 | unresolved_reloc, warned); | |
915e5146 | 995 | |
560e09e9 | 996 | if (unresolved_reloc |
915e5146 HPN |
997 | /* Perhaps we should detect the cases that |
998 | sec->output_section is expected to be NULL like i386 and | |
999 | m68k, but apparently (and according to elfxx-ia64.c) all | |
1000 | valid cases are where the symbol is defined in a shared | |
1001 | object which we link dynamically against. This includes | |
1002 | PLT relocs for which we've created a PLT entry and other | |
1003 | relocs for which we're prepared to create dynamic | |
1004 | relocations. | |
1005 | ||
1006 | For now, new situations cause us to just err when | |
1007 | sec->output_offset is NULL but the object with the symbol | |
1008 | is *not* dynamically linked against. Thus this will | |
1009 | automatically remind us so we can see if there are other | |
1010 | valid cases we need to revisit. */ | |
560e09e9 NC |
1011 | && (sec->owner->flags & DYNAMIC) != 0) |
1012 | relocation = 0; | |
1013 | ||
1014 | else if (h->root.type == bfd_link_hash_defined | |
1015 | || h->root.type == bfd_link_hash_defweak) | |
1016 | { | |
1017 | /* Here follow the cases where the relocation value must | |
1018 | be zero (or when further handling is simplified when | |
1019 | zero). I can't claim to understand the various | |
1020 | conditions and they weren't described in the files | |
1021 | where I copied them from (elf32-m68k.c and | |
1022 | elf32-i386.c), but let's mention examples of where | |
1023 | they happen. FIXME: Perhaps define and use a | |
1024 | dynamic_symbol_p function like ia64. | |
1025 | ||
1026 | - When creating a shared library, we can have an | |
1027 | ordinary relocation for a symbol defined in a shared | |
1028 | library (perhaps the one we create). We then make | |
1029 | the relocation value zero, as the value seen now will | |
1030 | be added into the relocation addend in this shared | |
1031 | library, but must be handled only at dynamic-link | |
1032 | time. FIXME: Not sure this example covers the | |
1033 | h->elf_link_hash_flags test, though it's there in | |
1034 | other targets. */ | |
1035 | if (info->shared | |
1036 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1037 | || !h->def_regular) |
560e09e9 NC |
1038 | && (input_section->flags & SEC_ALLOC) != 0 |
1039 | && (r_type == R_CRIS_8 | |
1040 | || r_type == R_CRIS_16 | |
1041 | || r_type == R_CRIS_32 | |
1042 | || r_type == R_CRIS_8_PCREL | |
1043 | || r_type == R_CRIS_16_PCREL | |
1044 | || r_type == R_CRIS_32_PCREL)) | |
915e5146 | 1045 | relocation = 0; |
560e09e9 | 1046 | else if (unresolved_reloc) |
915e5146 | 1047 | { |
560e09e9 | 1048 | _bfd_error_handler |
bac23f82 | 1049 | (_("%B, section %A: unresolvable relocation %s against symbol `%s'"), |
d003868e AM |
1050 | input_bfd, |
1051 | input_section, | |
8f615d07 | 1052 | cris_elf_howto_table[r_type].name, |
d003868e | 1053 | symname); |
915e5146 | 1054 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1055 | return FALSE; |
915e5146 | 1056 | } |
06c15ad7 | 1057 | } |
06c15ad7 | 1058 | } |
a7c10850 | 1059 | |
915e5146 | 1060 | switch (r_type) |
06c15ad7 | 1061 | { |
915e5146 HPN |
1062 | case R_CRIS_16_GOTPLT: |
1063 | case R_CRIS_32_GOTPLT: | |
1064 | /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT, | |
1065 | but we require a PLT, and the PLT handling will take care of | |
1066 | filling in the PLT-specific GOT entry. For the GOT offset, | |
1067 | calculate it as we do when filling it in for the .got.plt | |
1068 | section. If we don't have a PLT, punt to GOT handling. */ | |
1069 | if (h != NULL | |
1070 | && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0) | |
06c15ad7 | 1071 | { |
915e5146 HPN |
1072 | asection *sgotplt |
1073 | = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1074 | bfd_vma got_offset; | |
a7c10850 | 1075 | |
915e5146 HPN |
1076 | BFD_ASSERT (h->dynindx != -1); |
1077 | BFD_ASSERT (sgotplt != NULL); | |
a7c10850 | 1078 | |
915e5146 HPN |
1079 | got_offset |
1080 | = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; | |
06c15ad7 | 1081 | |
915e5146 | 1082 | relocation = got_offset; |
06c15ad7 | 1083 | break; |
915e5146 | 1084 | } |
06c15ad7 | 1085 | |
4d96d128 | 1086 | /* We didn't make a PLT entry for this symbol. Maybe everything is |
915e5146 HPN |
1087 | folded into the GOT. Other than folding, this happens when |
1088 | statically linking PIC code, or when using -Bsymbolic. Check | |
1089 | that we instead have a GOT entry as done for us by | |
1090 | elf_cris_adjust_dynamic_symbol, and drop through into the | |
e4a2175c HPN |
1091 | ordinary GOT cases. This must not happen for the |
1092 | executable, because any reference it does to a function | |
1093 | that is satisfied by a DSO must generate a PLT. We assume | |
1094 | these call-specific relocs don't address non-functions. */ | |
1095 | if (h != NULL | |
1096 | && (h->got.offset == (bfd_vma) -1 | |
1097 | || (!info->shared | |
f5385ebf AM |
1098 | && !(h->def_regular |
1099 | || (!h->def_dynamic | |
1100 | && h->root.type == bfd_link_hash_undefweak))))) | |
915e5146 HPN |
1101 | { |
1102 | (*_bfd_error_handler) | |
e4a2175c | 1103 | ((h->got.offset == (bfd_vma) -1) |
bac23f82 | 1104 | ? _("%B, section %A: No PLT nor GOT for relocation %s" |
d003868e | 1105 | " against symbol `%s'") |
bac23f82 | 1106 | : _("%B, section %A: No PLT for relocation %s" |
d003868e AM |
1107 | " against symbol `%s'"), |
1108 | input_bfd, | |
1109 | input_section, | |
915e5146 | 1110 | cris_elf_howto_table[r_type].name, |
ada1953e HPN |
1111 | (symname != NULL && symname[0] != '\0' |
1112 | ? symname : _("[whose name is lost]"))); | |
915e5146 HPN |
1113 | |
1114 | /* FIXME: Perhaps blaming input is not the right thing to | |
1115 | do; this is probably an internal error. But it is true | |
1116 | that we didn't like that particular input. */ | |
1117 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1118 | return FALSE; |
915e5146 HPN |
1119 | } |
1120 | /* Fall through. */ | |
1121 | ||
1122 | /* The size of the actual relocation is not used here; we only | |
1123 | fill in the GOT table here. */ | |
1124 | case R_CRIS_16_GOT: | |
1125 | case R_CRIS_32_GOT: | |
1126 | { | |
1127 | bfd_vma off; | |
1128 | ||
1129 | /* Note that despite using RELA relocations, the .got contents | |
1130 | is always filled in with the link-relative relocation | |
1131 | value; the addend. */ | |
1132 | ||
1133 | if (h != NULL) | |
1134 | { | |
1135 | off = h->got.offset; | |
1136 | BFD_ASSERT (off != (bfd_vma) -1); | |
1137 | ||
1138 | if (!elf_hash_table (info)->dynamic_sections_created | |
205cfeb0 | 1139 | || (! info->shared |
f5385ebf | 1140 | && (h->def_regular |
e4a2175c | 1141 | || h->type == STT_FUNC |
f5385ebf | 1142 | || h->needs_plt)) |
915e5146 HPN |
1143 | || (info->shared |
1144 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 1145 | && h->def_regular)) |
915e5146 | 1146 | { |
4d96d128 | 1147 | /* This wasn't checked above for ! info->shared, but |
e4a2175c HPN |
1148 | must hold there if we get here; the symbol must |
1149 | be defined in the regular program or be undefweak | |
1150 | or be a function or otherwise need a PLT. */ | |
6849c52f HPN |
1151 | BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created |
1152 | || info->shared | |
f5385ebf | 1153 | || h->def_regular |
e4a2175c | 1154 | || h->type == STT_FUNC |
f5385ebf | 1155 | || h->needs_plt |
6849c52f | 1156 | || h->root.type == bfd_link_hash_undefweak); |
4d96d128 | 1157 | |
915e5146 | 1158 | /* This is actually a static link, or it is a |
6849c52f HPN |
1159 | -Bsymbolic link and the symbol is defined locally, |
1160 | or is undefweak, or the symbol was forced to be | |
1161 | local because of a version file, or we're not | |
1162 | creating a dynamic object. We must initialize this | |
1163 | entry in the global offset table. Since the offset | |
1164 | must always be a multiple of 4, we use the least | |
1165 | significant bit to record whether we have | |
1166 | initialized it already. | |
1167 | ||
1168 | If this GOT entry should be runtime-initialized, we | |
1169 | will create a .rela.got relocation entry to | |
1170 | initialize the value. This is done in the | |
1171 | finish_dynamic_symbol routine. */ | |
915e5146 HPN |
1172 | if ((off & 1) != 0) |
1173 | off &= ~1; | |
1174 | else | |
1175 | { | |
1176 | bfd_put_32 (output_bfd, relocation, | |
1177 | sgot->contents + off); | |
1178 | h->got.offset |= 1; | |
1179 | } | |
1180 | } | |
1181 | } | |
1182 | else | |
1183 | { | |
1184 | BFD_ASSERT (local_got_offsets != NULL | |
1185 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1186 | ||
1187 | off = local_got_offsets[r_symndx]; | |
1188 | ||
1189 | /* The offset must always be a multiple of 4. We use | |
1190 | the least significant bit to record whether we have | |
1191 | already generated the necessary reloc. */ | |
1192 | if ((off & 1) != 0) | |
1193 | off &= ~1; | |
1194 | else | |
1195 | { | |
1196 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1197 | ||
1198 | if (info->shared) | |
1199 | { | |
947216bf | 1200 | asection *s; |
915e5146 | 1201 | Elf_Internal_Rela outrel; |
947216bf | 1202 | bfd_byte *loc; |
915e5146 | 1203 | |
947216bf AM |
1204 | s = bfd_get_section_by_name (dynobj, ".rela.got"); |
1205 | BFD_ASSERT (s != NULL); | |
915e5146 HPN |
1206 | |
1207 | outrel.r_offset = (sgot->output_section->vma | |
1208 | + sgot->output_offset | |
1209 | + off); | |
1210 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
1211 | outrel.r_addend = relocation; | |
947216bf AM |
1212 | loc = s->contents; |
1213 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela); | |
1214 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
915e5146 HPN |
1215 | } |
1216 | ||
1217 | local_got_offsets[r_symndx] |= 1; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | relocation = sgot->output_offset + off; | |
1222 | if (rel->r_addend != 0) | |
1223 | { | |
1224 | /* We can't do anything for a relocation which is against | |
1225 | a symbol *plus offset*. GOT holds relocations for | |
1226 | symbols. Make this an error; the compiler isn't | |
1227 | allowed to pass us these kinds of things. */ | |
1228 | if (h == NULL) | |
1229 | (*_bfd_error_handler) | |
bac23f82 | 1230 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1231 | " against local symbol"), |
1232 | input_bfd, | |
1233 | input_section, | |
915e5146 | 1234 | cris_elf_howto_table[r_type].name, |
d003868e | 1235 | rel->r_addend); |
915e5146 HPN |
1236 | else |
1237 | (*_bfd_error_handler) | |
bac23f82 | 1238 | (_("%B, section %A: relocation %s with non-zero addend %d" |
d003868e AM |
1239 | " against symbol `%s'"), |
1240 | input_bfd, | |
1241 | input_section, | |
915e5146 HPN |
1242 | cris_elf_howto_table[r_type].name, |
1243 | rel->r_addend, | |
d003868e | 1244 | symname[0] != '\0' ? symname : _("[whose name is lost]")); |
915e5146 HPN |
1245 | |
1246 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1247 | return FALSE; |
915e5146 HPN |
1248 | } |
1249 | } | |
1250 | break; | |
06c15ad7 | 1251 | |
915e5146 | 1252 | case R_CRIS_32_GOTREL: |
3dab95d3 HPN |
1253 | /* This relocation must only be performed against local symbols. |
1254 | It's also ok when we link a program and the symbol is either | |
1255 | defined in an ordinary (non-DSO) object or is undefined weak. */ | |
1256 | if (h != NULL | |
1257 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1258 | && !(!info->shared | |
f5385ebf AM |
1259 | && (h->def_regular |
1260 | || (!h->def_dynamic | |
3dab95d3 | 1261 | && h->root.type == bfd_link_hash_undefweak)))) |
915e5146 HPN |
1262 | { |
1263 | (*_bfd_error_handler) | |
bac23f82 HPN |
1264 | (_("%B, section %A: relocation %s is" |
1265 | " not allowed for global symbol: `%s'"), | |
d003868e AM |
1266 | input_bfd, |
1267 | input_section, | |
915e5146 | 1268 | cris_elf_howto_table[r_type].name, |
d003868e | 1269 | symname); |
915e5146 | 1270 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1271 | return FALSE; |
06c15ad7 HPN |
1272 | } |
1273 | ||
58255df3 HPN |
1274 | /* This can happen if we get a link error with the input ELF |
1275 | variant mismatching the output variant. Emit an error so | |
1276 | it's noticed if it happens elsewhere. */ | |
1277 | if (sgot == NULL) | |
1278 | { | |
1279 | (*_bfd_error_handler) | |
bac23f82 | 1280 | (_("%B, section %A: relocation %s with no GOT created"), |
d003868e AM |
1281 | input_bfd, |
1282 | input_section, | |
1283 | cris_elf_howto_table[r_type].name); | |
58255df3 | 1284 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 1285 | return FALSE; |
58255df3 HPN |
1286 | } |
1287 | ||
915e5146 HPN |
1288 | /* This relocation is like a PC-relative one, except the |
1289 | reference point is the location of GOT. Note that | |
1290 | sgot->output_offset is not involved in this calculation. We | |
1291 | always want the start of entire .got section, not the | |
1292 | position after the reserved header. */ | |
1293 | relocation -= sgot->output_section->vma; | |
1294 | break; | |
06c15ad7 | 1295 | |
915e5146 HPN |
1296 | case R_CRIS_32_PLT_PCREL: |
1297 | /* Relocation is to the entry for this symbol in the | |
1298 | procedure linkage table. */ | |
06c15ad7 | 1299 | |
915e5146 HPN |
1300 | /* Resolve a PLT_PCREL reloc against a local symbol directly, |
1301 | without using the procedure linkage table. */ | |
0a4787a0 | 1302 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1303 | break; |
1304 | ||
1305 | if (h->plt.offset == (bfd_vma) -1 | |
1306 | || splt == NULL) | |
1307 | { | |
1308 | /* We didn't make a PLT entry for this symbol. This | |
1309 | happens when statically linking PIC code, or when | |
1310 | using -Bsymbolic. */ | |
1311 | break; | |
1312 | } | |
1313 | ||
1314 | relocation = (splt->output_section->vma | |
1315 | + splt->output_offset | |
1316 | + h->plt.offset); | |
1317 | break; | |
1318 | ||
1319 | case R_CRIS_32_PLT_GOTREL: | |
1320 | /* Like R_CRIS_32_PLT_PCREL, but the reference point is the | |
1321 | start of the .got section. See also comment at | |
1322 | R_CRIS_32_GOT. */ | |
1323 | relocation -= sgot->output_section->vma; | |
1324 | ||
1325 | /* Resolve a PLT_GOTREL reloc against a local symbol directly, | |
1326 | without using the procedure linkage table. */ | |
0a4787a0 | 1327 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1328 | break; |
1329 | ||
1330 | if (h->plt.offset == (bfd_vma) -1 | |
1331 | || splt == NULL) | |
1332 | { | |
1333 | /* We didn't make a PLT entry for this symbol. This | |
1334 | happens when statically linking PIC code, or when | |
1335 | using -Bsymbolic. */ | |
1336 | break; | |
1337 | } | |
1338 | ||
1339 | relocation = (splt->output_section->vma | |
1340 | + splt->output_offset | |
1341 | + h->plt.offset | |
1342 | - sgot->output_section->vma); | |
1343 | break; | |
1344 | ||
1345 | case R_CRIS_8_PCREL: | |
1346 | case R_CRIS_16_PCREL: | |
1347 | case R_CRIS_32_PCREL: | |
1348 | /* If the symbol was local, we need no shlib-specific handling. */ | |
0a4787a0 | 1349 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
1350 | break; |
1351 | ||
1352 | /* Fall through. */ | |
1353 | case R_CRIS_8: | |
1354 | case R_CRIS_16: | |
1355 | case R_CRIS_32: | |
1356 | if (info->shared | |
ec338859 | 1357 | && r_symndx != 0 |
915e5146 HPN |
1358 | && (input_section->flags & SEC_ALLOC) != 0 |
1359 | && ((r_type != R_CRIS_8_PCREL | |
1360 | && r_type != R_CRIS_16_PCREL | |
1361 | && r_type != R_CRIS_32_PCREL) | |
1362 | || (!info->symbolic | |
f5385ebf | 1363 | || !h->def_regular))) |
915e5146 HPN |
1364 | { |
1365 | Elf_Internal_Rela outrel; | |
947216bf | 1366 | bfd_byte *loc; |
b34976b6 | 1367 | bfd_boolean skip, relocate; |
915e5146 HPN |
1368 | |
1369 | /* When generating a shared object, these relocations | |
1370 | are copied into the output file to be resolved at run | |
1371 | time. */ | |
1372 | ||
1373 | if (sreloc == NULL) | |
1374 | { | |
1375 | const char *name; | |
1376 | ||
1377 | name = (bfd_elf_string_from_elf_section | |
1378 | (input_bfd, | |
1379 | elf_elfheader (input_bfd)->e_shstrndx, | |
1380 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
1381 | if (name == NULL) | |
b34976b6 | 1382 | return FALSE; |
915e5146 HPN |
1383 | |
1384 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
1385 | && strcmp (bfd_get_section_name (input_bfd, | |
1386 | input_section), | |
1387 | name + 5) == 0); | |
1388 | ||
1389 | sreloc = bfd_get_section_by_name (dynobj, name); | |
1390 | ||
1391 | /* That section should have been created in | |
1392 | cris_elf_check_relocs, but that function will not be | |
1393 | called for objects which fail in | |
1394 | cris_elf_merge_private_bfd_data. */ | |
1395 | if (sreloc == NULL) | |
1396 | { | |
1397 | (*_bfd_error_handler) | |
d003868e AM |
1398 | (_("%B: Internal inconsistency; no relocation section %s"), |
1399 | input_bfd, | |
915e5146 HPN |
1400 | name); |
1401 | ||
1402 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1403 | return FALSE; |
915e5146 HPN |
1404 | } |
1405 | } | |
1406 | ||
b34976b6 AM |
1407 | skip = FALSE; |
1408 | relocate = FALSE; | |
915e5146 | 1409 | |
c629eae0 JJ |
1410 | outrel.r_offset = |
1411 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
1412 | rel->r_offset); | |
1413 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 1414 | skip = TRUE; |
0bb2d96a | 1415 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 1416 | skip = TRUE, relocate = TRUE; |
915e5146 HPN |
1417 | outrel.r_offset += (input_section->output_section->vma |
1418 | + input_section->output_offset); | |
1419 | ||
1420 | if (skip) | |
0bb2d96a | 1421 | memset (&outrel, 0, sizeof outrel); |
915e5146 HPN |
1422 | /* h->dynindx may be -1 if the symbol was marked to |
1423 | become local. */ | |
1424 | else if (h != NULL | |
1425 | && ((! info->symbolic && h->dynindx != -1) | |
f5385ebf | 1426 | || !h->def_regular)) |
915e5146 HPN |
1427 | { |
1428 | BFD_ASSERT (h->dynindx != -1); | |
915e5146 HPN |
1429 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1430 | outrel.r_addend = relocation + rel->r_addend; | |
1431 | } | |
1432 | else | |
1433 | { | |
1434 | if (r_type == R_CRIS_32) | |
1435 | { | |
b34976b6 | 1436 | relocate = TRUE; |
915e5146 HPN |
1437 | outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); |
1438 | outrel.r_addend = relocation + rel->r_addend; | |
1439 | } | |
1440 | else | |
1441 | { | |
1442 | long indx; | |
1443 | ||
8517fae7 | 1444 | if (bfd_is_abs_section (sec)) |
915e5146 HPN |
1445 | indx = 0; |
1446 | else if (sec == NULL || sec->owner == NULL) | |
1447 | { | |
1448 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1449 | return FALSE; |
915e5146 HPN |
1450 | } |
1451 | else | |
1452 | { | |
1453 | asection *osec; | |
1454 | ||
1455 | osec = sec->output_section; | |
1456 | indx = elf_section_data (osec)->dynindx; | |
1457 | BFD_ASSERT (indx > 0); | |
1458 | } | |
1459 | ||
915e5146 HPN |
1460 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
1461 | outrel.r_addend = relocation + rel->r_addend; | |
1462 | } | |
1463 | } | |
1464 | ||
947216bf AM |
1465 | loc = sreloc->contents; |
1466 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
1467 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
915e5146 HPN |
1468 | |
1469 | /* This reloc will be computed at runtime, so there's no | |
1470 | need to do anything now, except for R_CRIS_32 relocations | |
1471 | that have been turned into R_CRIS_RELATIVE. */ | |
1472 | if (!relocate) | |
1473 | continue; | |
1474 | } | |
1475 | ||
1476 | break; | |
1477 | } | |
1478 | ||
1479 | r = cris_final_link_relocate (howto, input_bfd, input_section, | |
1480 | contents, rel, relocation); | |
1481 | ||
1482 | if (r != bfd_reloc_ok) | |
1483 | { | |
1484 | const char * msg = (const char *) NULL; | |
1485 | ||
1486 | switch (r) | |
1487 | { | |
1488 | case bfd_reloc_overflow: | |
1489 | r = info->callbacks->reloc_overflow | |
dfeffb9f L |
1490 | (info, (h ? &h->root : NULL), symname, howto->name, |
1491 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
915e5146 HPN |
1492 | break; |
1493 | ||
1494 | case bfd_reloc_undefined: | |
1495 | r = info->callbacks->undefined_symbol | |
dc810e39 | 1496 | (info, symname, input_bfd, input_section, rel->r_offset, |
b34976b6 | 1497 | TRUE); |
915e5146 HPN |
1498 | break; |
1499 | ||
1500 | case bfd_reloc_outofrange: | |
1501 | msg = _("internal error: out of range error"); | |
1502 | break; | |
1503 | ||
1504 | case bfd_reloc_notsupported: | |
1505 | msg = _("internal error: unsupported relocation error"); | |
1506 | break; | |
1507 | ||
1508 | case bfd_reloc_dangerous: | |
1509 | msg = _("internal error: dangerous relocation"); | |
1510 | break; | |
1511 | ||
1512 | default: | |
1513 | msg = _("internal error: unknown error"); | |
1514 | break; | |
1515 | } | |
1516 | ||
1517 | if (msg) | |
1518 | r = info->callbacks->warning | |
dc810e39 | 1519 | (info, msg, symname, input_bfd, input_section, rel->r_offset); |
915e5146 HPN |
1520 | |
1521 | if (! r) | |
b34976b6 | 1522 | return FALSE; |
915e5146 HPN |
1523 | } |
1524 | } | |
1525 | ||
b34976b6 | 1526 | return TRUE; |
915e5146 HPN |
1527 | } |
1528 | \f | |
1529 | /* Finish up dynamic symbol handling. We set the contents of various | |
1530 | dynamic sections here. */ | |
1531 | ||
b34976b6 | 1532 | static bfd_boolean |
915e5146 HPN |
1533 | elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym) |
1534 | bfd *output_bfd; | |
1535 | struct bfd_link_info *info; | |
1536 | struct elf_link_hash_entry *h; | |
1537 | Elf_Internal_Sym *sym; | |
1538 | { | |
1539 | bfd *dynobj; | |
bac23f82 HPN |
1540 | |
1541 | /* Where in the plt entry to put values. */ | |
915e5146 HPN |
1542 | int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16; |
1543 | ||
bac23f82 HPN |
1544 | /* What offset to add to the distance to the first PLT entry for the |
1545 | value at plt_off3. */ | |
1546 | int plt_off3_value_bias = 4; | |
1547 | ||
1548 | /* Where in the PLT entry the call-dynlink-stub is (happens to be same | |
1549 | for PIC and non-PIC for v32 and pre-v32). */ | |
1550 | int plt_stub_offset = 8; | |
1551 | int plt_entry_size = PLT_ENTRY_SIZE; | |
1552 | const bfd_byte *plt_entry = elf_cris_plt_entry; | |
1553 | const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry; | |
1554 | ||
1555 | /* Adjust the various PLT entry offsets. */ | |
1556 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) | |
1557 | { | |
1558 | plt_off2 = 14; | |
1559 | plt_off3 = 20; | |
1560 | plt_off3_value_bias = -2; | |
1561 | plt_stub_offset = 12; | |
1562 | plt_entry_size = PLT_ENTRY_SIZE_V32; | |
1563 | plt_entry = elf_cris_plt_entry_v32; | |
1564 | plt_pic_entry = elf_cris_pic_plt_entry_v32; | |
1565 | } | |
1566 | ||
915e5146 HPN |
1567 | dynobj = elf_hash_table (info)->dynobj; |
1568 | ||
1569 | if (h->plt.offset != (bfd_vma) -1) | |
1570 | { | |
1571 | asection *splt; | |
1572 | asection *sgotplt; | |
1573 | asection *sgot; | |
1574 | asection *srela; | |
1575 | bfd_vma got_base; | |
1576 | ||
1577 | bfd_vma gotplt_offset | |
1578 | = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; | |
1579 | Elf_Internal_Rela rela; | |
947216bf | 1580 | bfd_byte *loc; |
b34976b6 | 1581 | bfd_boolean has_gotplt = gotplt_offset != 0; |
915e5146 HPN |
1582 | |
1583 | /* Get the index in the procedure linkage table which | |
1584 | corresponds to this symbol. This is the index of this symbol | |
1585 | in all the symbols for which we are making plt entries. The | |
1586 | first entry in the procedure linkage table is reserved. */ | |
1587 | /* We have to count backwards here, and the result is only valid as | |
1588 | an index into .got.plt and its relocations. FIXME: Constants... */ | |
1589 | bfd_vma gotplt_index = gotplt_offset/4 - 3; | |
1590 | ||
1591 | /* Get the offset into the .got table of the entry that corresponds | |
1592 | to this function. Note that we embed knowledge that "incoming" | |
1593 | .got goes after .got.plt in the output without padding (pointer | |
1594 | aligned). However, that knowledge is present in several other | |
c152c796 | 1595 | places too. */ |
915e5146 HPN |
1596 | bfd_vma got_offset |
1597 | = (has_gotplt | |
1598 | ? gotplt_offset | |
1599 | : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry); | |
1600 | ||
1601 | /* This symbol has an entry in the procedure linkage table. Set it | |
1602 | up. */ | |
1603 | ||
1604 | BFD_ASSERT (h->dynindx != -1); | |
1605 | ||
1606 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1607 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1608 | sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1609 | srela = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
1610 | BFD_ASSERT (splt != NULL && sgotplt != NULL | |
1611 | && (! has_gotplt || srela != NULL)); | |
1612 | ||
1613 | got_base = sgotplt->output_section->vma + sgotplt->output_offset; | |
1614 | ||
1615 | /* Fill in the entry in the procedure linkage table. */ | |
1616 | if (! info->shared) | |
1617 | { | |
bac23f82 HPN |
1618 | memcpy (splt->contents + h->plt.offset, plt_entry, |
1619 | plt_entry_size); | |
915e5146 HPN |
1620 | |
1621 | /* We need to enter the absolute address of the GOT entry here. */ | |
1622 | bfd_put_32 (output_bfd, got_base + got_offset, | |
1623 | splt->contents + h->plt.offset + plt_off1); | |
1624 | } | |
1625 | else | |
1626 | { | |
bac23f82 HPN |
1627 | memcpy (splt->contents + h->plt.offset, plt_pic_entry, |
1628 | plt_entry_size); | |
915e5146 HPN |
1629 | bfd_put_32 (output_bfd, got_offset, |
1630 | splt->contents + h->plt.offset + plt_off1); | |
1631 | } | |
1632 | ||
1633 | /* Fill in the plt entry and make a relocation, if this is a "real" | |
1634 | PLT entry. */ | |
1635 | if (has_gotplt) | |
1636 | { | |
bac23f82 | 1637 | /* Fill in the offset to the reloc table. */ |
915e5146 HPN |
1638 | bfd_put_32 (output_bfd, |
1639 | gotplt_index * sizeof (Elf32_External_Rela), | |
1640 | splt->contents + h->plt.offset + plt_off2); | |
1641 | ||
1642 | /* Fill in the offset to the first PLT entry, where to "jump". */ | |
bac23f82 HPN |
1643 | bfd_put_32 (output_bfd, |
1644 | - (h->plt.offset + plt_off3 + plt_off3_value_bias), | |
915e5146 HPN |
1645 | splt->contents + h->plt.offset + plt_off3); |
1646 | ||
1647 | /* Fill in the entry in the global offset table with the address of | |
1648 | the relocating stub. */ | |
1649 | bfd_put_32 (output_bfd, | |
1650 | (splt->output_section->vma | |
1651 | + splt->output_offset | |
1652 | + h->plt.offset | |
bac23f82 | 1653 | + plt_stub_offset), |
915e5146 HPN |
1654 | sgotplt->contents + got_offset); |
1655 | ||
1656 | /* Fill in the entry in the .rela.plt section. */ | |
1657 | rela.r_offset = (sgotplt->output_section->vma | |
1658 | + sgotplt->output_offset | |
1659 | + got_offset); | |
1660 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT); | |
1661 | rela.r_addend = 0; | |
947216bf AM |
1662 | loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela); |
1663 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
1664 | } |
1665 | ||
f5385ebf | 1666 | if (!h->def_regular) |
915e5146 HPN |
1667 | { |
1668 | /* Mark the symbol as undefined, rather than as defined in | |
1669 | the .plt section. Leave the value alone. */ | |
1670 | sym->st_shndx = SHN_UNDEF; | |
1671 | ||
1672 | /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't | |
1673 | know whether resetting the value is significant; if it really | |
1674 | is, rather than a quirk or bug in the sparc port, then I | |
1675 | believe we'd see this elsewhere. */ | |
1676 | /* If the symbol is weak, we do need to clear the value. | |
1677 | Otherwise, the PLT entry would provide a definition for | |
1678 | the symbol even if the symbol wasn't defined anywhere, | |
1679 | and so the symbol would never be NULL. */ | |
f5385ebf | 1680 | if (!h->ref_regular_nonweak) |
915e5146 HPN |
1681 | sym->st_value = 0; |
1682 | } | |
1683 | } | |
1684 | ||
e4a2175c HPN |
1685 | /* For an ordinary program, we emit .got relocs only for symbols that |
1686 | are in the dynamic-symbols table and are either defined by the | |
1687 | program or are undefined weak symbols, or are function symbols | |
1688 | where we do not output a PLT: the PLT reloc was output above and all | |
1689 | references to the function symbol are redirected to the PLT. */ | |
4d96d128 | 1690 | if (h->got.offset != (bfd_vma) -1 |
6849c52f HPN |
1691 | && (info->shared |
1692 | || (h->dynindx != -1 | |
e4a2175c | 1693 | && h->plt.offset == (bfd_vma) -1 |
f5385ebf | 1694 | && !h->def_regular |
6849c52f | 1695 | && h->root.type != bfd_link_hash_undefweak))) |
915e5146 HPN |
1696 | { |
1697 | asection *sgot; | |
1698 | asection *srela; | |
1699 | Elf_Internal_Rela rela; | |
947216bf | 1700 | bfd_byte *loc; |
dc810e39 | 1701 | bfd_byte *where; |
915e5146 HPN |
1702 | |
1703 | /* This symbol has an entry in the global offset table. Set it up. */ | |
1704 | ||
1705 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
1706 | srela = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1707 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1708 | ||
1709 | rela.r_offset = (sgot->output_section->vma | |
1710 | + sgot->output_offset | |
dc810e39 | 1711 | + (h->got.offset &~ (bfd_vma) 1)); |
915e5146 HPN |
1712 | |
1713 | /* If this is a static link, or it is a -Bsymbolic link and the | |
1714 | symbol is defined locally or was forced to be local because | |
1715 | of a version file, we just want to emit a RELATIVE reloc. | |
1716 | The entry in the global offset table will already have been | |
1717 | initialized in the relocate_section function. */ | |
dc810e39 | 1718 | where = sgot->contents + (h->got.offset &~ (bfd_vma) 1); |
915e5146 HPN |
1719 | if (! elf_hash_table (info)->dynamic_sections_created |
1720 | || (info->shared | |
1721 | && (info->symbolic || h->dynindx == -1) | |
f5385ebf | 1722 | && h->def_regular)) |
915e5146 HPN |
1723 | { |
1724 | rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); | |
dc810e39 | 1725 | rela.r_addend = bfd_get_signed_32 (output_bfd, where); |
915e5146 HPN |
1726 | } |
1727 | else | |
1728 | { | |
dc810e39 | 1729 | bfd_put_32 (output_bfd, (bfd_vma) 0, where); |
915e5146 HPN |
1730 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT); |
1731 | rela.r_addend = 0; | |
1732 | } | |
1733 | ||
947216bf AM |
1734 | loc = srela->contents; |
1735 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
1736 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
1737 | } |
1738 | ||
f5385ebf | 1739 | if (h->needs_copy) |
915e5146 HPN |
1740 | { |
1741 | asection *s; | |
1742 | Elf_Internal_Rela rela; | |
947216bf | 1743 | bfd_byte *loc; |
915e5146 HPN |
1744 | |
1745 | /* This symbol needs a copy reloc. Set it up. */ | |
1746 | ||
1747 | BFD_ASSERT (h->dynindx != -1 | |
1748 | && (h->root.type == bfd_link_hash_defined | |
1749 | || h->root.type == bfd_link_hash_defweak)); | |
1750 | ||
1751 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
1752 | ".rela.bss"); | |
1753 | BFD_ASSERT (s != NULL); | |
1754 | ||
1755 | rela.r_offset = (h->root.u.def.value | |
1756 | + h->root.u.def.section->output_section->vma | |
1757 | + h->root.u.def.section->output_offset); | |
1758 | rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY); | |
1759 | rela.r_addend = 0; | |
947216bf AM |
1760 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
1761 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
915e5146 HPN |
1762 | } |
1763 | ||
1764 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
1765 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
1766 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
1767 | sym->st_shndx = SHN_ABS; | |
1768 | ||
b34976b6 | 1769 | return TRUE; |
915e5146 HPN |
1770 | } |
1771 | \f | |
1772 | /* Finish up the dynamic sections. */ | |
1773 | ||
b34976b6 | 1774 | static bfd_boolean |
915e5146 HPN |
1775 | elf_cris_finish_dynamic_sections (output_bfd, info) |
1776 | bfd *output_bfd; | |
1777 | struct bfd_link_info *info; | |
1778 | { | |
1779 | bfd *dynobj; | |
1780 | asection *sgot; | |
1781 | asection *sdyn; | |
1782 | ||
1783 | dynobj = elf_hash_table (info)->dynobj; | |
1784 | ||
1785 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1786 | BFD_ASSERT (sgot != NULL); | |
1787 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
1788 | ||
1789 | if (elf_hash_table (info)->dynamic_sections_created) | |
1790 | { | |
1791 | asection *splt; | |
1792 | Elf32_External_Dyn *dyncon, *dynconend; | |
1793 | ||
1794 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1795 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
1796 | ||
1797 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 1798 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
915e5146 HPN |
1799 | for (; dyncon < dynconend; dyncon++) |
1800 | { | |
1801 | Elf_Internal_Dyn dyn; | |
1802 | asection *s; | |
1803 | ||
1804 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1805 | ||
1806 | switch (dyn.d_tag) | |
1807 | { | |
1808 | default: | |
1809 | break; | |
1810 | ||
1811 | case DT_PLTGOT: | |
1812 | s = bfd_get_section_by_name (output_bfd, ".got"); | |
1813 | BFD_ASSERT (s != NULL); | |
1814 | dyn.d_un.d_ptr = s->vma; | |
1815 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1816 | break; | |
1817 | ||
1818 | case DT_JMPREL: | |
1819 | /* Yes, we *can* have a .plt and no .plt.rela, for instance | |
1820 | if all symbols are found in the .got (not .got.plt). */ | |
1821 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1822 | dyn.d_un.d_ptr = s != NULL ? s->vma : 0; | |
1823 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1824 | break; | |
1825 | ||
1826 | case DT_PLTRELSZ: | |
1827 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1828 | if (s == NULL) | |
1829 | dyn.d_un.d_val = 0; | |
915e5146 | 1830 | else |
eea6121a | 1831 | dyn.d_un.d_val = s->size; |
915e5146 HPN |
1832 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1833 | break; | |
1834 | ||
1835 | case DT_RELASZ: | |
1836 | /* The procedure linkage table relocs (DT_JMPREL) should | |
1837 | not be included in the overall relocs (DT_RELA). | |
1838 | Therefore, we override the DT_RELASZ entry here to | |
1839 | make it not include the JMPREL relocs. Since the | |
1840 | linker script arranges for .rela.plt to follow all | |
1841 | other relocation sections, we don't have to worry | |
1842 | about changing the DT_RELA entry. */ | |
1843 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
1844 | if (s != NULL) | |
eea6121a | 1845 | dyn.d_un.d_val -= s->size; |
915e5146 HPN |
1846 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
1847 | break; | |
1848 | } | |
1849 | } | |
1850 | ||
1851 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 1852 | if (splt->size > 0) |
915e5146 | 1853 | { |
bac23f82 HPN |
1854 | if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) |
1855 | { | |
1856 | if (info->shared) | |
1857 | memcpy (splt->contents, elf_cris_pic_plt0_entry_v32, | |
1858 | PLT_ENTRY_SIZE_V32); | |
1859 | else | |
1860 | { | |
1861 | memcpy (splt->contents, elf_cris_plt0_entry_v32, | |
1862 | PLT_ENTRY_SIZE_V32); | |
1863 | bfd_put_32 (output_bfd, | |
1864 | sgot->output_section->vma | |
1865 | + sgot->output_offset + 4, | |
1866 | splt->contents + 4); | |
1867 | ||
1868 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
1869 | = PLT_ENTRY_SIZE_V32; | |
1870 | } | |
1871 | } | |
915e5146 | 1872 | else |
bac23f82 HPN |
1873 | { |
1874 | if (info->shared) | |
1875 | memcpy (splt->contents, elf_cris_pic_plt0_entry, | |
1876 | PLT_ENTRY_SIZE); | |
1877 | else | |
1878 | { | |
1879 | memcpy (splt->contents, elf_cris_plt0_entry, | |
1880 | PLT_ENTRY_SIZE); | |
1881 | bfd_put_32 (output_bfd, | |
1882 | sgot->output_section->vma | |
1883 | + sgot->output_offset + 4, | |
1884 | splt->contents + 6); | |
1885 | bfd_put_32 (output_bfd, | |
1886 | sgot->output_section->vma | |
1887 | + sgot->output_offset + 8, | |
1888 | splt->contents + 14); | |
1889 | ||
1890 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
1891 | = PLT_ENTRY_SIZE; | |
1892 | } | |
915e5146 HPN |
1893 | } |
1894 | } | |
1895 | } | |
1896 | ||
1897 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 1898 | if (sgot->size > 0) |
915e5146 HPN |
1899 | { |
1900 | if (sdyn == NULL) | |
1901 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1902 | else | |
1903 | bfd_put_32 (output_bfd, | |
1904 | sdyn->output_section->vma + sdyn->output_offset, | |
1905 | sgot->contents); | |
1906 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
1907 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
1908 | } | |
1909 | ||
1910 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1911 | ||
b34976b6 | 1912 | return TRUE; |
06c15ad7 HPN |
1913 | } |
1914 | \f | |
1915 | /* Return the section that should be marked against GC for a given | |
1916 | relocation. */ | |
1917 | ||
1918 | static asection * | |
1e2f5b6e | 1919 | cris_elf_gc_mark_hook (sec, info, rel, h, sym) |
b34976b6 AM |
1920 | asection *sec; |
1921 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1922 | Elf_Internal_Rela *rel; | |
1923 | struct elf_link_hash_entry *h; | |
1924 | Elf_Internal_Sym *sym; | |
06c15ad7 HPN |
1925 | { |
1926 | if (h != NULL) | |
1927 | { | |
1928 | switch (ELF32_R_TYPE (rel->r_info)) | |
1929 | { | |
1930 | case R_CRIS_GNU_VTINHERIT: | |
1931 | case R_CRIS_GNU_VTENTRY: | |
1932 | break; | |
1933 | ||
1934 | default: | |
1935 | switch (h->root.type) | |
1936 | { | |
1937 | case bfd_link_hash_defined: | |
1938 | case bfd_link_hash_defweak: | |
1939 | return h->root.u.def.section; | |
1940 | ||
1941 | case bfd_link_hash_common: | |
1942 | return h->root.u.c.p->section; | |
1943 | ||
1944 | default: | |
1945 | break; | |
1946 | } | |
1947 | } | |
1948 | } | |
1949 | else | |
1e2f5b6e | 1950 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
06c15ad7 HPN |
1951 | |
1952 | return NULL; | |
1953 | } | |
1954 | ||
1955 | /* Update the got entry reference counts for the section being removed. */ | |
1956 | ||
b34976b6 | 1957 | static bfd_boolean |
06c15ad7 | 1958 | cris_elf_gc_sweep_hook (abfd, info, sec, relocs) |
b34976b6 AM |
1959 | bfd *abfd ATTRIBUTE_UNUSED; |
1960 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
1961 | asection *sec ATTRIBUTE_UNUSED; | |
1962 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
06c15ad7 | 1963 | { |
915e5146 HPN |
1964 | Elf_Internal_Shdr *symtab_hdr; |
1965 | struct elf_link_hash_entry **sym_hashes; | |
1966 | bfd_signed_vma *local_got_refcounts; | |
1967 | const Elf_Internal_Rela *rel, *relend; | |
915e5146 HPN |
1968 | bfd *dynobj; |
1969 | asection *sgot; | |
1970 | asection *srelgot; | |
1971 | ||
915e5146 HPN |
1972 | dynobj = elf_hash_table (info)->dynobj; |
1973 | if (dynobj == NULL) | |
b34976b6 | 1974 | return TRUE; |
915e5146 | 1975 | |
babfd660 KH |
1976 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1977 | sym_hashes = elf_sym_hashes (abfd); | |
1978 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1979 | ||
915e5146 HPN |
1980 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
1981 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
1982 | ||
1983 | relend = relocs + sec->reloc_count; | |
1984 | for (rel = relocs; rel < relend; rel++) | |
1985 | { | |
babfd660 KH |
1986 | unsigned long r_symndx; |
1987 | struct elf_link_hash_entry *h; | |
1988 | ||
915e5146 HPN |
1989 | switch (ELF32_R_TYPE (rel->r_info)) |
1990 | { | |
1991 | case R_CRIS_16_GOT: | |
1992 | case R_CRIS_32_GOT: | |
1993 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1994 | if (r_symndx >= symtab_hdr->sh_info) | |
1995 | { | |
1996 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1997 | if (h->got.refcount > 0) | |
1998 | { | |
1999 | --h->got.refcount; | |
2000 | if (h->got.refcount == 0) | |
2001 | { | |
2002 | /* We don't need the .got entry any more. */ | |
eea6121a AM |
2003 | sgot->size -= 4; |
2004 | srelgot->size -= sizeof (Elf32_External_Rela); | |
915e5146 HPN |
2005 | } |
2006 | } | |
2007 | break; | |
2008 | } | |
2009 | ||
2010 | local_got_reloc: | |
2011 | if (local_got_refcounts != NULL) | |
2012 | { | |
2013 | if (local_got_refcounts[r_symndx] > 0) | |
2014 | { | |
2015 | --local_got_refcounts[r_symndx]; | |
2016 | if (local_got_refcounts[r_symndx] == 0) | |
2017 | { | |
2018 | /* We don't need the .got entry any more. */ | |
eea6121a | 2019 | sgot->size -= 4; |
915e5146 | 2020 | if (info->shared) |
eea6121a | 2021 | srelgot->size -= sizeof (Elf32_External_Rela); |
915e5146 HPN |
2022 | } |
2023 | } | |
2024 | } | |
2025 | break; | |
2026 | ||
2027 | case R_CRIS_16_GOTPLT: | |
2028 | case R_CRIS_32_GOTPLT: | |
2029 | /* For local symbols, treat these like GOT relocs. */ | |
2030 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2031 | if (r_symndx < symtab_hdr->sh_info) | |
2032 | goto local_got_reloc; | |
e4a2175c | 2033 | /* Fall through. */ |
915e5146 HPN |
2034 | case R_CRIS_32_PLT_GOTREL: |
2035 | /* FIXME: We don't garbage-collect away the .got section. */ | |
2036 | if (local_got_refcounts != NULL) | |
2037 | local_got_refcounts[-1]--; | |
2038 | /* Fall through. */ | |
915e5146 HPN |
2039 | case R_CRIS_8_PCREL: |
2040 | case R_CRIS_16_PCREL: | |
2041 | case R_CRIS_32_PCREL: | |
2042 | case R_CRIS_32_PLT_PCREL: | |
2043 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2044 | if (r_symndx >= symtab_hdr->sh_info) | |
2045 | { | |
2046 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
0a4787a0 HPN |
2047 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2048 | && h->plt.refcount > 0) | |
915e5146 HPN |
2049 | --h->plt.refcount; |
2050 | } | |
2051 | break; | |
2052 | ||
2053 | default: | |
2054 | break; | |
2055 | } | |
2056 | } | |
2057 | ||
b34976b6 | 2058 | return TRUE; |
06c15ad7 HPN |
2059 | } |
2060 | ||
915e5146 HPN |
2061 | /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT |
2062 | entry but we found we will not create any. Called when we find we will | |
4d96d128 HPN |
2063 | not have any PLT for this symbol, by for example |
2064 | elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link, | |
2065 | or elf_cris_size_dynamic_sections if no dynamic sections will be | |
2066 | created (we're only linking static objects). */ | |
915e5146 | 2067 | |
b34976b6 | 2068 | static bfd_boolean |
915e5146 HPN |
2069 | elf_cris_adjust_gotplt_to_got (h, p) |
2070 | struct elf_cris_link_hash_entry *h; | |
2071 | PTR p; | |
2072 | { | |
2073 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
2074 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
2075 | ||
2076 | BFD_ASSERT (dynobj != NULL); | |
2077 | ||
e92d460e AM |
2078 | if (h->root.root.type == bfd_link_hash_warning) |
2079 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
2080 | ||
915e5146 HPN |
2081 | /* If nobody wanted a GOTPLT with this symbol, we're done. */ |
2082 | if (h->gotplt_refcount <= 0) | |
b34976b6 | 2083 | return TRUE; |
915e5146 HPN |
2084 | |
2085 | if (h->root.got.refcount > 0) | |
2086 | { | |
2087 | /* There's a GOT entry for this symbol. Just adjust the refcount. | |
2088 | Probably not necessary at this stage, but keeping it accurate | |
2089 | helps avoiding surprises later. */ | |
2090 | h->root.got.refcount += h->gotplt_refcount; | |
5e0f5ae3 | 2091 | h->gotplt_refcount = 0; |
915e5146 HPN |
2092 | } |
2093 | else | |
2094 | { | |
4d96d128 | 2095 | /* No GOT entry for this symbol. We need to create one. */ |
915e5146 HPN |
2096 | asection *sgot = bfd_get_section_by_name (dynobj, ".got"); |
2097 | asection *srelgot | |
2098 | = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2099 | ||
2100 | /* Put an accurate refcount there. */ | |
2101 | h->root.got.refcount = h->gotplt_refcount; | |
2102 | ||
5e0f5ae3 | 2103 | h->gotplt_refcount = 0; |
915e5146 | 2104 | |
44aa49bb HPN |
2105 | /* We always have a .got and a .rela.got section if there were |
2106 | GOTPLT relocs in input. */ | |
2107 | BFD_ASSERT (sgot != NULL && srelgot != NULL); | |
915e5146 HPN |
2108 | |
2109 | /* Allocate space in the .got section. */ | |
eea6121a | 2110 | sgot->size += 4; |
915e5146 HPN |
2111 | |
2112 | /* Allocate relocation space. */ | |
eea6121a | 2113 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2114 | } |
2115 | ||
b34976b6 | 2116 | return TRUE; |
915e5146 HPN |
2117 | } |
2118 | ||
2119 | /* Try to fold PLT entries with GOT entries. There are two cases when we | |
2120 | want to do this: | |
2121 | ||
2122 | - When all PLT references are GOTPLT references, and there are GOT | |
e4a2175c HPN |
2123 | references, and this is not the executable. We don't have to |
2124 | generate a PLT at all. | |
915e5146 | 2125 | |
e4a2175c HPN |
2126 | - When there are both (ordinary) PLT references and GOT references, |
2127 | and this isn't the executable. | |
915e5146 | 2128 | We want to make the PLT reference use the ordinary GOT entry rather |
e4a2175c HPN |
2129 | than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry, |
2130 | since the GOT entry will have to be resolved at startup anyway. | |
915e5146 HPN |
2131 | |
2132 | Though the latter case is handled when room for the PLT is allocated, | |
2133 | not here. | |
2134 | ||
e4a2175c HPN |
2135 | By folding into the GOT, we may need a round-trip to a PLT in the |
2136 | executable for calls, a loss in performance. Still, losing a | |
2137 | reloc is a win in size and at least in start-up time. | |
2138 | ||
915e5146 HPN |
2139 | Note that this function is called before symbols are forced local by |
2140 | version scripts. The differing cases are handled by | |
2141 | elf_cris_hide_symbol. */ | |
2142 | ||
b34976b6 | 2143 | static bfd_boolean |
915e5146 HPN |
2144 | elf_cris_try_fold_plt_to_got (h, p) |
2145 | struct elf_cris_link_hash_entry *h; | |
2146 | PTR p; | |
2147 | { | |
2148 | struct bfd_link_info *info = (struct bfd_link_info *) p; | |
2149 | ||
2150 | /* If there are no GOT references for this symbol, we can't fold any | |
2151 | other reference so there's nothing to do. Likewise if there are no | |
2152 | PLT references; GOTPLT references included. */ | |
2153 | if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0) | |
b34976b6 | 2154 | return TRUE; |
915e5146 HPN |
2155 | |
2156 | /* GOTPLT relocs are supposed to be included into the PLT refcount. */ | |
2157 | BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount); | |
2158 | ||
2159 | if (h->gotplt_refcount == h->root.plt.refcount) | |
2160 | { | |
4d96d128 | 2161 | /* The only PLT references are GOTPLT references, and there are GOT |
915e5146 HPN |
2162 | references. Convert PLT to GOT references. */ |
2163 | if (! elf_cris_adjust_gotplt_to_got (h, info)) | |
b34976b6 | 2164 | return FALSE; |
915e5146 HPN |
2165 | |
2166 | /* Clear the PLT references, so no PLT will be created. */ | |
2167 | h->root.plt.offset = (bfd_vma) -1; | |
2168 | } | |
2169 | ||
b34976b6 | 2170 | return TRUE; |
915e5146 HPN |
2171 | } |
2172 | ||
2173 | /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc | |
2174 | to use a GOT entry (and create one) rather than requiring a GOTPLT | |
2175 | entry. */ | |
2176 | ||
2177 | static void | |
e5094212 | 2178 | elf_cris_hide_symbol (info, h, force_local) |
915e5146 HPN |
2179 | struct bfd_link_info *info; |
2180 | struct elf_link_hash_entry *h; | |
b34976b6 | 2181 | bfd_boolean force_local; |
915e5146 HPN |
2182 | { |
2183 | elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info); | |
2184 | ||
e5094212 | 2185 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
915e5146 HPN |
2186 | } |
2187 | ||
2188 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
2189 | regular object. The current definition is in some section of the | |
2190 | dynamic object, but we're not including those sections. We have to | |
2191 | change the definition to something the rest of the link can | |
2192 | understand. */ | |
2193 | ||
b34976b6 | 2194 | static bfd_boolean |
915e5146 HPN |
2195 | elf_cris_adjust_dynamic_symbol (info, h) |
2196 | struct bfd_link_info *info; | |
2197 | struct elf_link_hash_entry *h; | |
2198 | { | |
2199 | bfd *dynobj; | |
2200 | asection *s; | |
2201 | unsigned int power_of_two; | |
bac23f82 | 2202 | bfd_size_type plt_entry_size; |
915e5146 HPN |
2203 | |
2204 | dynobj = elf_hash_table (info)->dynobj; | |
2205 | ||
2206 | /* Make sure we know what is going on here. */ | |
2207 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 2208 | && (h->needs_plt |
f6e332e6 | 2209 | || h->u.weakdef != NULL |
f5385ebf AM |
2210 | || (h->def_dynamic |
2211 | && h->ref_regular | |
2212 | && !h->def_regular))); | |
915e5146 | 2213 | |
bac23f82 HPN |
2214 | plt_entry_size |
2215 | = (bfd_get_mach (dynobj) == bfd_mach_cris_v32 | |
2216 | ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); | |
2217 | ||
915e5146 HPN |
2218 | /* If this is a function, put it in the procedure linkage table. We |
2219 | will fill in the contents of the procedure linkage table later, | |
2220 | when we know the address of the .got section. */ | |
2221 | if (h->type == STT_FUNC | |
f5385ebf | 2222 | || h->needs_plt) |
915e5146 | 2223 | { |
6849c52f HPN |
2224 | /* If we link a program (not a DSO), we'll get rid of unnecessary |
2225 | PLT entries; we point to the actual symbols -- even for pic | |
2226 | relocs, because a program built with -fpic should have the same | |
2227 | result as one built without -fpic, specifically considering weak | |
2228 | symbols. | |
2229 | FIXME: m68k and i386 differ here, for unclear reasons. */ | |
915e5146 | 2230 | if (! info->shared |
f5385ebf | 2231 | && !h->def_dynamic) |
915e5146 HPN |
2232 | { |
2233 | /* This case can occur if we saw a PLT reloc in an input file, | |
6849c52f HPN |
2234 | but the symbol was not defined by a dynamic object. In such |
2235 | a case, we don't actually need to build a procedure linkage | |
2236 | table, and we can just do an absolute or PC reloc instead, or | |
4d96d128 | 2237 | change a .got.plt index to a .got index for GOTPLT relocs. */ |
f5385ebf AM |
2238 | BFD_ASSERT (h->needs_plt); |
2239 | h->needs_plt = 0; | |
915e5146 | 2240 | h->plt.offset = (bfd_vma) -1; |
915e5146 HPN |
2241 | return |
2242 | elf_cris_adjust_gotplt_to_got ((struct | |
2243 | elf_cris_link_hash_entry *) h, | |
2244 | info); | |
2245 | } | |
2246 | ||
e4a2175c HPN |
2247 | /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT; |
2248 | where a pointer-equivalent symbol was unimportant (i.e. more | |
2249 | like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid | |
2250 | of the PLT. We can't for the executable, because the GOT | |
2251 | entries will point to the PLT there (and be constant). */ | |
2252 | if (info->shared | |
2253 | && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*) | |
2254 | h, info)) | |
b34976b6 | 2255 | return FALSE; |
915e5146 HPN |
2256 | |
2257 | /* GC or folding may have rendered this entry unused. */ | |
2258 | if (h->plt.refcount <= 0) | |
2259 | { | |
f5385ebf | 2260 | h->needs_plt = 0; |
915e5146 | 2261 | h->plt.offset = (bfd_vma) -1; |
b34976b6 | 2262 | return TRUE; |
915e5146 HPN |
2263 | } |
2264 | ||
2265 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2266 | if (h->dynindx == -1) | |
2267 | { | |
c152c796 | 2268 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2269 | return FALSE; |
915e5146 HPN |
2270 | } |
2271 | ||
2272 | s = bfd_get_section_by_name (dynobj, ".plt"); | |
2273 | BFD_ASSERT (s != NULL); | |
2274 | ||
2275 | /* If this is the first .plt entry, make room for the special | |
2276 | first entry. */ | |
eea6121a | 2277 | if (s->size == 0) |
bac23f82 | 2278 | s->size += plt_entry_size; |
915e5146 HPN |
2279 | |
2280 | /* If this symbol is not defined in a regular file, and we are | |
2281 | not generating a shared library, then set the symbol to this | |
6849c52f | 2282 | location in the .plt. */ |
915e5146 | 2283 | if (!info->shared |
f5385ebf | 2284 | && !h->def_regular) |
915e5146 HPN |
2285 | { |
2286 | h->root.u.def.section = s; | |
eea6121a | 2287 | h->root.u.def.value = s->size; |
915e5146 HPN |
2288 | } |
2289 | ||
4d96d128 HPN |
2290 | /* If there's already a GOT entry, use that, not a .got.plt. A |
2291 | GOT field still has a reference count when we get here; it's | |
e4a2175c HPN |
2292 | not yet changed to an offset. We can't do this for an |
2293 | executable, because then the reloc associated with the PLT | |
2294 | would get a non-PLT reloc pointing to the PLT. FIXME: Move | |
2295 | this to elf_cris_try_fold_plt_to_got. */ | |
2296 | if (info->shared && h->got.refcount > 0) | |
915e5146 HPN |
2297 | { |
2298 | h->got.refcount += h->plt.refcount; | |
2299 | ||
2300 | /* Mark the PLT offset to use the GOT entry by setting the low | |
2301 | bit in the plt offset; it is always a multiple of | |
bac23f82 HPN |
2302 | plt_entry_size (which is at least a multiple of 2). */ |
2303 | BFD_ASSERT ((s->size % plt_entry_size) == 0); | |
915e5146 HPN |
2304 | |
2305 | /* Change the PLT refcount to an offset. */ | |
eea6121a | 2306 | h->plt.offset = s->size; |
915e5146 HPN |
2307 | |
2308 | /* By not setting gotplt_offset (i.e. it remains at 0), we signal | |
2309 | that the got entry should be used instead. */ | |
2310 | BFD_ASSERT (((struct elf_cris_link_hash_entry *) | |
2311 | h)->gotplt_offset == 0); | |
2312 | ||
2313 | /* Make room for this entry. */ | |
bac23f82 | 2314 | s->size += plt_entry_size; |
915e5146 | 2315 | |
b34976b6 | 2316 | return TRUE; |
915e5146 HPN |
2317 | } |
2318 | ||
2319 | /* No GOT reference for this symbol; prepare for an ordinary PLT. */ | |
eea6121a | 2320 | h->plt.offset = s->size; |
915e5146 HPN |
2321 | |
2322 | /* Make room for this entry. */ | |
bac23f82 | 2323 | s->size += plt_entry_size; |
915e5146 HPN |
2324 | |
2325 | /* We also need to make an entry in the .got.plt section, which | |
2326 | will be placed in the .got section by the linker script. */ | |
2327 | ((struct elf_cris_link_hash_entry *) h)->gotplt_offset | |
2328 | = elf_cris_hash_table (info)->next_gotplt_entry; | |
2329 | elf_cris_hash_table (info)->next_gotplt_entry += 4; | |
2330 | ||
2331 | s = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2332 | BFD_ASSERT (s != NULL); | |
eea6121a | 2333 | s->size += 4; |
915e5146 HPN |
2334 | |
2335 | /* We also need to make an entry in the .rela.plt section. */ | |
2336 | ||
2337 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
2338 | BFD_ASSERT (s != NULL); | |
eea6121a | 2339 | s->size += sizeof (Elf32_External_Rela); |
915e5146 | 2340 | |
b34976b6 | 2341 | return TRUE; |
915e5146 HPN |
2342 | } |
2343 | ||
2344 | /* Reinitialize the plt offset now that it is not used as a reference | |
2345 | count any more. */ | |
2346 | h->plt.offset = (bfd_vma) -1; | |
2347 | ||
2348 | /* If this is a weak symbol, and there is a real definition, the | |
2349 | processor independent code will have arranged for us to see the | |
2350 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 2351 | if (h->u.weakdef != NULL) |
915e5146 | 2352 | { |
f6e332e6 AM |
2353 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2354 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2355 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2356 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 2357 | return TRUE; |
915e5146 HPN |
2358 | } |
2359 | ||
2360 | /* This is a reference to a symbol defined by a dynamic object which | |
2361 | is not a function. */ | |
2362 | ||
2363 | /* If we are creating a shared library, we must presume that the | |
2364 | only references to the symbol are via the global offset table. | |
2365 | For such cases we need not do anything here; the relocations will | |
2366 | be handled correctly by relocate_section. */ | |
2367 | if (info->shared) | |
b34976b6 | 2368 | return TRUE; |
915e5146 HPN |
2369 | |
2370 | /* If there are no references to this symbol that do not use the | |
2371 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2372 | if (!h->non_got_ref) |
b34976b6 | 2373 | return TRUE; |
915e5146 HPN |
2374 | |
2375 | /* We must allocate the symbol in our .dynbss section, which will | |
2376 | become part of the .bss section of the executable. There will be | |
2377 | an entry for this symbol in the .dynsym section. The dynamic | |
2378 | object will contain position independent code, so all references | |
2379 | from the dynamic object to this symbol will go through the global | |
2380 | offset table. The dynamic linker will use the .dynsym entry to | |
2381 | determine the address it must put in the global offset table, so | |
2382 | both the dynamic object and the regular object will refer to the | |
2383 | same memory location for the variable. */ | |
2384 | ||
2385 | s = bfd_get_section_by_name (dynobj, ".dynbss"); | |
2386 | BFD_ASSERT (s != NULL); | |
2387 | ||
2388 | /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to | |
2389 | copy the initial value out of the dynamic object and into the | |
2390 | runtime process image. We need to remember the offset into the | |
2391 | .rela.bss section we are going to use. */ | |
2392 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2393 | { | |
2394 | asection *srel; | |
2395 | ||
2396 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
2397 | BFD_ASSERT (srel != NULL); | |
eea6121a | 2398 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 2399 | h->needs_copy = 1; |
915e5146 HPN |
2400 | } |
2401 | ||
2402 | /* Historic precedent: m68k and i386 allow max 8-byte alignment for the | |
2403 | thing to copy; so do we. */ | |
2404 | ||
2405 | /* We need to figure out the alignment required for this symbol. I | |
2406 | have no idea how ELF linkers handle this. */ | |
2407 | power_of_two = bfd_log2 (h->size); | |
2408 | if (power_of_two > 3) | |
2409 | power_of_two = 3; | |
2410 | ||
2411 | /* Apply the required alignment. */ | |
eea6121a | 2412 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
915e5146 HPN |
2413 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
2414 | { | |
2415 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 2416 | return FALSE; |
915e5146 HPN |
2417 | } |
2418 | ||
2419 | /* Define the symbol as being at this point in the section. */ | |
2420 | h->root.u.def.section = s; | |
eea6121a | 2421 | h->root.u.def.value = s->size; |
915e5146 HPN |
2422 | |
2423 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 2424 | s->size += h->size; |
915e5146 | 2425 | |
b34976b6 | 2426 | return TRUE; |
915e5146 HPN |
2427 | } |
2428 | ||
2429 | /* Look through the relocs for a section during the first phase. */ | |
a7c10850 | 2430 | |
b34976b6 | 2431 | static bfd_boolean |
06c15ad7 HPN |
2432 | cris_elf_check_relocs (abfd, info, sec, relocs) |
2433 | bfd *abfd; | |
2434 | struct bfd_link_info *info; | |
2435 | asection *sec; | |
2436 | const Elf_Internal_Rela *relocs; | |
2437 | { | |
915e5146 | 2438 | bfd *dynobj; |
06c15ad7 HPN |
2439 | Elf_Internal_Shdr *symtab_hdr; |
2440 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
915e5146 | 2441 | bfd_signed_vma *local_got_refcounts; |
06c15ad7 HPN |
2442 | const Elf_Internal_Rela *rel; |
2443 | const Elf_Internal_Rela *rel_end; | |
915e5146 HPN |
2444 | asection *sgot; |
2445 | asection *srelgot; | |
2446 | asection *sreloc; | |
a7c10850 | 2447 | |
1049f94e | 2448 | if (info->relocatable) |
b34976b6 | 2449 | return TRUE; |
a7c10850 | 2450 | |
915e5146 | 2451 | dynobj = elf_hash_table (info)->dynobj; |
06c15ad7 HPN |
2452 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2453 | sym_hashes = elf_sym_hashes (abfd); | |
a7c10850 | 2454 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); |
915e5146 HPN |
2455 | local_got_refcounts = elf_local_got_refcounts (abfd); |
2456 | ||
2457 | sgot = NULL; | |
2458 | srelgot = NULL; | |
2459 | sreloc = NULL; | |
2460 | ||
06c15ad7 HPN |
2461 | if (!elf_bad_symtab (abfd)) |
2462 | sym_hashes_end -= symtab_hdr->sh_info; | |
a7c10850 | 2463 | |
06c15ad7 HPN |
2464 | rel_end = relocs + sec->reloc_count; |
2465 | for (rel = relocs; rel < rel_end; rel++) | |
2466 | { | |
2467 | struct elf_link_hash_entry *h; | |
2468 | unsigned long r_symndx; | |
915e5146 | 2469 | enum elf_cris_reloc_type r_type; |
a7c10850 | 2470 | |
06c15ad7 HPN |
2471 | r_symndx = ELF32_R_SYM (rel->r_info); |
2472 | if (r_symndx < symtab_hdr->sh_info) | |
2473 | h = NULL; | |
2474 | else | |
2475 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
a7c10850 | 2476 | |
915e5146 HPN |
2477 | r_type = ELF32_R_TYPE (rel->r_info); |
2478 | ||
2479 | /* Some relocs require linker-created sections; we need to hang them | |
2480 | on the first input bfd we found that contained dynamic relocs. */ | |
2481 | switch (r_type) | |
2482 | { | |
2483 | case R_CRIS_16_GOT: | |
2484 | case R_CRIS_32_GOT: | |
2485 | case R_CRIS_32_GOTREL: | |
2486 | case R_CRIS_32_PLT_GOTREL: | |
2487 | case R_CRIS_32_PLT_PCREL: | |
2488 | case R_CRIS_16_GOTPLT: | |
2489 | case R_CRIS_32_GOTPLT: | |
2490 | if (dynobj == NULL) | |
2491 | { | |
2492 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
2493 | ||
bac23f82 HPN |
2494 | /* We could handle this if we can get a handle on the |
2495 | output bfd in elf_cris_adjust_dynamic_symbol. Failing | |
2496 | that, we must insist on dynobj being a specific mach. */ | |
2497 | if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32) | |
2498 | { | |
2499 | (*_bfd_error_handler) | |
2500 | (_("%B, section %A:\n v10/v32 compatible object %s" | |
2501 | " must not contain a PIC relocation"), | |
2502 | abfd, sec); | |
2503 | return FALSE; | |
2504 | } | |
2505 | ||
915e5146 HPN |
2506 | /* Create the .got section, so we can assume it's always |
2507 | present whenever there's a dynobj. */ | |
2508 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 2509 | return FALSE; |
915e5146 HPN |
2510 | } |
2511 | break; | |
2512 | ||
2513 | default: | |
2514 | break; | |
2515 | } | |
2516 | ||
2517 | /* Some relocs require a global offset table (but perhaps not a | |
2518 | specific GOT entry). */ | |
4d96d128 | 2519 | switch (r_type) |
915e5146 | 2520 | { |
44aa49bb HPN |
2521 | /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT |
2522 | entry only for local symbols. Unfortunately, we don't know | |
2523 | until later on if there's a version script that forces the | |
2524 | symbol local. We must have the .rela.got section in place | |
2525 | before we know if the symbol looks global now, so we need | |
2526 | to treat the reloc just like for R_CRIS_16_GOT and | |
2527 | R_CRIS_32_GOT. */ | |
2528 | case R_CRIS_16_GOTPLT: | |
2529 | case R_CRIS_32_GOTPLT: | |
915e5146 HPN |
2530 | case R_CRIS_16_GOT: |
2531 | case R_CRIS_32_GOT: | |
44aa49bb HPN |
2532 | if (srelgot == NULL |
2533 | && (h != NULL || info->shared)) | |
2534 | { | |
2535 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2536 | if (srelgot == NULL) | |
2537 | { | |
2538 | srelgot = bfd_make_section (dynobj, ".rela.got"); | |
2539 | if (srelgot == NULL | |
2540 | || !bfd_set_section_flags (dynobj, srelgot, | |
2541 | (SEC_ALLOC | |
2542 | | SEC_LOAD | |
2543 | | SEC_HAS_CONTENTS | |
2544 | | SEC_IN_MEMORY | |
2545 | | SEC_LINKER_CREATED | |
2546 | | SEC_READONLY)) | |
2547 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) | |
b34976b6 | 2548 | return FALSE; |
44aa49bb HPN |
2549 | } |
2550 | } | |
2551 | /* Fall through. */ | |
2552 | ||
915e5146 HPN |
2553 | case R_CRIS_32_GOTREL: |
2554 | case R_CRIS_32_PLT_GOTREL: | |
2555 | if (sgot == NULL) | |
2556 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2557 | ||
2558 | if (local_got_refcounts == NULL) | |
2559 | { | |
dc810e39 | 2560 | bfd_size_type amt; |
915e5146 HPN |
2561 | |
2562 | /* We use index local_got_refcounts[-1] to count all | |
2563 | GOT-relative relocations that do not have explicit | |
2564 | GOT entries. */ | |
dc810e39 AM |
2565 | amt = symtab_hdr->sh_info + 1; |
2566 | amt *= sizeof (bfd_signed_vma); | |
51b64d56 | 2567 | local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt)); |
915e5146 | 2568 | if (local_got_refcounts == NULL) |
b34976b6 | 2569 | return FALSE; |
915e5146 HPN |
2570 | |
2571 | local_got_refcounts++; | |
2572 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
2573 | } | |
2574 | break; | |
2575 | ||
2576 | default: | |
2577 | break; | |
2578 | } | |
2579 | ||
4d96d128 | 2580 | switch (r_type) |
06c15ad7 | 2581 | { |
915e5146 HPN |
2582 | case R_CRIS_16_GOTPLT: |
2583 | case R_CRIS_32_GOTPLT: | |
2584 | /* Mark that we need a GOT entry if the PLT entry (and its GOT | |
2585 | entry) is eliminated. We can only do this for a non-local | |
2586 | symbol. */ | |
2587 | if (h != NULL) | |
2588 | { | |
2589 | ((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++; | |
2590 | goto handle_gotplt_reloc; | |
2591 | } | |
2592 | /* If h is NULL then this is a local symbol, and we must make a | |
2593 | GOT entry for it, so handle it like a GOT reloc. */ | |
2594 | /* Fall through. */ | |
2595 | ||
2596 | case R_CRIS_16_GOT: | |
2597 | case R_CRIS_32_GOT: | |
2598 | /* This symbol requires a global offset table entry. */ | |
915e5146 HPN |
2599 | if (h != NULL) |
2600 | { | |
51b64d56 | 2601 | if (h->got.refcount == 0) |
915e5146 | 2602 | { |
915e5146 HPN |
2603 | /* Make sure this symbol is output as a dynamic symbol. */ |
2604 | if (h->dynindx == -1) | |
2605 | { | |
c152c796 | 2606 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2607 | return FALSE; |
915e5146 HPN |
2608 | } |
2609 | ||
2610 | /* Allocate space in the .got section. */ | |
eea6121a | 2611 | sgot->size += 4; |
915e5146 | 2612 | /* Allocate relocation space. */ |
eea6121a | 2613 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 | 2614 | } |
51b64d56 | 2615 | h->got.refcount++; |
915e5146 HPN |
2616 | } |
2617 | else | |
2618 | { | |
2619 | /* This is a global offset table entry for a local symbol. */ | |
51b64d56 | 2620 | if (local_got_refcounts[r_symndx] == 0) |
915e5146 | 2621 | { |
eea6121a | 2622 | sgot->size += 4; |
915e5146 HPN |
2623 | if (info->shared) |
2624 | { | |
2625 | /* If we are generating a shared object, we need to | |
2626 | output a R_CRIS_RELATIVE reloc so that the dynamic | |
2627 | linker can adjust this GOT entry. */ | |
eea6121a | 2628 | srelgot->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2629 | } |
2630 | } | |
51b64d56 | 2631 | local_got_refcounts[r_symndx]++; |
915e5146 HPN |
2632 | } |
2633 | break; | |
2634 | ||
2635 | case R_CRIS_32_GOTREL: | |
2636 | /* This reference requires a global offset table. | |
2637 | FIXME: The actual refcount isn't used currently; the .got | |
2638 | section can't be removed if there were any references in the | |
2639 | input. */ | |
2640 | local_got_refcounts[-1]++; | |
2641 | break; | |
2642 | ||
2643 | handle_gotplt_reloc: | |
2644 | ||
2645 | case R_CRIS_32_PLT_GOTREL: | |
2646 | /* This reference requires a global offset table. */ | |
2647 | local_got_refcounts[-1]++; | |
2648 | /* Fall through. */ | |
2649 | ||
2650 | case R_CRIS_32_PLT_PCREL: | |
2651 | /* This symbol requires a procedure linkage table entry. We | |
2652 | actually build the entry in adjust_dynamic_symbol, | |
2653 | because this might be a case of linking PIC code which is | |
2654 | never referenced by a dynamic object, in which case we | |
2655 | don't need to generate a procedure linkage table entry | |
2656 | after all. */ | |
2657 | ||
ada1953e HPN |
2658 | /* Beware: if we'd check for visibility of the symbol here |
2659 | (and not marking the need for a PLT when non-visible), we'd | |
2660 | get into trouble with keeping handling consistent with | |
2661 | regards to relocs found before definition and GOTPLT | |
2662 | handling. Eliminable PLT entries will be dealt with later | |
2663 | anyway. */ | |
2664 | if (h == NULL) | |
915e5146 HPN |
2665 | continue; |
2666 | ||
f5385ebf | 2667 | h->needs_plt = 1; |
51b64d56 | 2668 | h->plt.refcount++; |
915e5146 HPN |
2669 | break; |
2670 | ||
2671 | case R_CRIS_8: | |
2672 | case R_CRIS_16: | |
2673 | case R_CRIS_32: | |
2674 | /* Let's help debug shared library creation. Any of these | |
2675 | relocs can be used in shared libs, but pages containing them | |
2676 | cannot be shared. Don't warn for sections we don't care | |
2677 | about, such as debug sections or non-constant sections. We | |
2678 | can't help tables of (global) function pointers, for example, | |
2679 | though they must be emitted in a data section to avoid having | |
2680 | impure text sections. */ | |
2681 | if (info->shared | |
2682 | && (sec->flags & SEC_ALLOC) != 0 | |
2683 | && (sec->flags & SEC_READONLY) != 0) | |
2684 | { | |
2685 | /* FIXME: How do we make this optionally a warning only? */ | |
8f615d07 | 2686 | (*_bfd_error_handler) |
bac23f82 HPN |
2687 | (_("%B, section %A:\n relocation %s should not" |
2688 | " be used in a shared object; recompile with -fPIC"), | |
d003868e AM |
2689 | abfd, |
2690 | sec, | |
8f615d07 | 2691 | cris_elf_howto_table[r_type].name); |
915e5146 HPN |
2692 | } |
2693 | /* Fall through. */ | |
2694 | ||
2695 | case R_CRIS_8_PCREL: | |
2696 | case R_CRIS_16_PCREL: | |
2697 | case R_CRIS_32_PCREL: | |
2698 | if (h != NULL) | |
2699 | { | |
f5385ebf | 2700 | h->non_got_ref = 1; |
915e5146 HPN |
2701 | |
2702 | /* Make sure a plt entry is created for this symbol if it | |
2703 | turns out to be a function defined by a dynamic object. */ | |
0a4787a0 HPN |
2704 | if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
2705 | h->plt.refcount++; | |
915e5146 HPN |
2706 | } |
2707 | ||
2708 | /* If we are creating a shared library and this is not a local | |
2709 | symbol, we need to copy the reloc into the shared library. | |
2710 | However when linking with -Bsymbolic and this is a global | |
2711 | symbol which is defined in an object we are including in the | |
2712 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
2713 | reloc directly. At this point we have not seen all the input | |
2714 | files, so it is possible that DEF_REGULAR is not set now but | |
2715 | will be set later (it is never cleared). In case of a weak | |
2716 | definition, DEF_REGULAR may be cleared later by a strong | |
2717 | definition in a shared library. We account for that | |
2718 | possibility below by storing information in the relocs_copied | |
2719 | field of the hash table entry. A similar situation occurs | |
2720 | when creating shared libraries and symbol visibility changes | |
2721 | render the symbol local. */ | |
2722 | ||
2723 | /* No need to do anything if we're not creating a shared object. */ | |
2724 | if (! info->shared) | |
2725 | break; | |
2726 | ||
2727 | /* We don't need to handle relocs into sections not going into | |
2728 | the "real" output. */ | |
2729 | if ((sec->flags & SEC_ALLOC) == 0) | |
2730 | break; | |
2731 | ||
2732 | /* We can only eliminate PC-relative relocs. */ | |
2733 | if (r_type == R_CRIS_8_PCREL | |
2734 | || r_type == R_CRIS_16_PCREL | |
2735 | || r_type == R_CRIS_32_PCREL) | |
2736 | { | |
2737 | /* If the symbol is local, then we can eliminate the reloc. */ | |
0a4787a0 | 2738 | if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
915e5146 HPN |
2739 | break; |
2740 | ||
2741 | /* If this is with -Bsymbolic and the symbol isn't weak, and | |
2742 | is defined by an ordinary object (the ones we include in | |
2743 | this shared library) then we can also eliminate the | |
2744 | reloc. See comment above for more eliminable cases which | |
2745 | we can't identify at this time. */ | |
2746 | if (info->symbolic | |
2747 | && h->root.type != bfd_link_hash_defweak | |
f5385ebf | 2748 | && h->def_regular) |
915e5146 | 2749 | break; |
bac23f82 HPN |
2750 | |
2751 | if ((sec->flags & SEC_READONLY) != 0) | |
2752 | { | |
2753 | /* FIXME: How do we make this optionally a warning only? */ | |
2754 | (*_bfd_error_handler) | |
2755 | (_("%B, section %A:\n relocation %s should not be used" | |
2756 | " in a shared object; recompile with -fPIC"), | |
2757 | abfd, | |
2758 | sec, | |
2759 | cris_elf_howto_table[r_type].name); | |
2760 | } | |
915e5146 HPN |
2761 | } |
2762 | ||
2763 | /* We create a reloc section in dynobj and make room for this | |
2764 | reloc. */ | |
2765 | if (sreloc == NULL) | |
2766 | { | |
2767 | const char *name; | |
2768 | ||
2769 | name = (bfd_elf_string_from_elf_section | |
2770 | (abfd, | |
2771 | elf_elfheader (abfd)->e_shstrndx, | |
2772 | elf_section_data (sec)->rel_hdr.sh_name)); | |
2773 | if (name == NULL) | |
b34976b6 | 2774 | return FALSE; |
915e5146 HPN |
2775 | |
2776 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
2777 | && strcmp (bfd_get_section_name (abfd, sec), | |
2778 | name + 5) == 0); | |
2779 | ||
2780 | sreloc = bfd_get_section_by_name (dynobj, name); | |
2781 | if (sreloc == NULL) | |
2782 | { | |
2783 | sreloc = bfd_make_section (dynobj, name); | |
2784 | if (sreloc == NULL | |
2785 | || !bfd_set_section_flags (dynobj, sreloc, | |
2786 | (SEC_ALLOC | |
2787 | | SEC_LOAD | |
2788 | | SEC_HAS_CONTENTS | |
2789 | | SEC_IN_MEMORY | |
2790 | | SEC_LINKER_CREATED | |
2791 | | SEC_READONLY)) | |
2792 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 2793 | return FALSE; |
915e5146 | 2794 | } |
99e4ae17 AJ |
2795 | if (sec->flags & SEC_READONLY) |
2796 | info->flags |= DF_TEXTREL; | |
915e5146 HPN |
2797 | } |
2798 | ||
eea6121a | 2799 | sreloc->size += sizeof (Elf32_External_Rela); |
915e5146 HPN |
2800 | |
2801 | /* If we are linking with -Bsymbolic, we count the number of PC | |
2802 | relative relocations we have entered for this symbol, so that | |
2803 | we can discard them again if the symbol is later defined by a | |
2804 | regular object. We know that h is really a pointer to an | |
2805 | elf_cris_link_hash_entry. */ | |
4d96d128 HPN |
2806 | if ((r_type == R_CRIS_8_PCREL |
2807 | || r_type == R_CRIS_16_PCREL | |
2808 | || r_type == R_CRIS_32_PCREL) | |
915e5146 HPN |
2809 | && info->symbolic) |
2810 | { | |
2811 | struct elf_cris_link_hash_entry *eh; | |
2812 | struct elf_cris_pcrel_relocs_copied *p; | |
2813 | ||
2814 | eh = (struct elf_cris_link_hash_entry *) h; | |
2815 | ||
2816 | for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) | |
2817 | if (p->section == sreloc) | |
2818 | break; | |
2819 | ||
2820 | if (p == NULL) | |
2821 | { | |
2822 | p = ((struct elf_cris_pcrel_relocs_copied *) | |
dc810e39 | 2823 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
915e5146 | 2824 | if (p == NULL) |
b34976b6 | 2825 | return FALSE; |
915e5146 HPN |
2826 | p->next = eh->pcrel_relocs_copied; |
2827 | eh->pcrel_relocs_copied = p; | |
2828 | p->section = sreloc; | |
2829 | p->count = 0; | |
2830 | } | |
2831 | ||
2832 | ++p->count; | |
2833 | } | |
2834 | break; | |
2835 | ||
06c15ad7 HPN |
2836 | /* This relocation describes the C++ object vtable hierarchy. |
2837 | Reconstruct it for later use during GC. */ | |
2838 | case R_CRIS_GNU_VTINHERIT: | |
c152c796 | 2839 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 2840 | return FALSE; |
06c15ad7 | 2841 | break; |
a7c10850 | 2842 | |
06c15ad7 HPN |
2843 | /* This relocation describes which C++ vtable entries are actually |
2844 | used. Record for later use during GC. */ | |
2845 | case R_CRIS_GNU_VTENTRY: | |
c152c796 | 2846 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 2847 | return FALSE; |
06c15ad7 | 2848 | break; |
4d96d128 HPN |
2849 | |
2850 | default: | |
2851 | /* Other relocs do not appear here. */ | |
2852 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2853 | return FALSE; |
06c15ad7 HPN |
2854 | } |
2855 | } | |
a7c10850 | 2856 | |
b34976b6 | 2857 | return TRUE; |
06c15ad7 | 2858 | } |
4da81684 | 2859 | |
915e5146 HPN |
2860 | /* Set the sizes of the dynamic sections. */ |
2861 | ||
b34976b6 | 2862 | static bfd_boolean |
915e5146 | 2863 | elf_cris_size_dynamic_sections (output_bfd, info) |
99e4ae17 | 2864 | bfd *output_bfd ATTRIBUTE_UNUSED; |
915e5146 HPN |
2865 | struct bfd_link_info *info; |
2866 | { | |
2867 | bfd *dynobj; | |
2868 | asection *s; | |
b34976b6 AM |
2869 | bfd_boolean plt; |
2870 | bfd_boolean relocs; | |
915e5146 HPN |
2871 | |
2872 | dynobj = elf_hash_table (info)->dynobj; | |
2873 | BFD_ASSERT (dynobj != NULL); | |
2874 | ||
2875 | if (elf_hash_table (info)->dynamic_sections_created) | |
2876 | { | |
2877 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 2878 | if (info->executable) |
915e5146 HPN |
2879 | { |
2880 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2881 | BFD_ASSERT (s != NULL); | |
eea6121a | 2882 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
915e5146 HPN |
2883 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2884 | } | |
2885 | } | |
2886 | else | |
2887 | { | |
2888 | /* Adjust all expected GOTPLT uses to use a GOT entry instead. */ | |
2889 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
2890 | elf_cris_adjust_gotplt_to_got, | |
2891 | (PTR) info); | |
2892 | ||
2893 | /* We may have created entries in the .rela.got section. | |
2894 | However, if we are not creating the dynamic sections, we will | |
2895 | not actually use these entries. Reset the size of .rela.got, | |
2896 | which will cause it to get stripped from the output file | |
2897 | below. */ | |
2898 | s = bfd_get_section_by_name (dynobj, ".rela.got"); | |
2899 | if (s != NULL) | |
eea6121a | 2900 | s->size = 0; |
915e5146 HPN |
2901 | } |
2902 | ||
2903 | /* If this is a -Bsymbolic shared link, then we need to discard all PC | |
2904 | relative relocs against symbols defined in a regular object. We | |
2905 | allocated space for them in the check_relocs routine, but we will not | |
2906 | fill them in in the relocate_section routine. We also discard space | |
2907 | for relocs that have become for local symbols due to symbol | |
4d96d128 HPN |
2908 | visibility changes. For programs, we discard space for relocs for |
2909 | symbols not referenced by any dynamic object. */ | |
915e5146 HPN |
2910 | if (info->shared) |
2911 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
4d96d128 HPN |
2912 | elf_cris_discard_excess_dso_dynamics, |
2913 | (PTR) info); | |
2914 | else | |
2915 | elf_cris_link_hash_traverse (elf_cris_hash_table (info), | |
2916 | elf_cris_discard_excess_program_dynamics, | |
915e5146 HPN |
2917 | (PTR) info); |
2918 | ||
2919 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
2920 | determined the sizes of the various dynamic sections. Allocate | |
2921 | memory for them. */ | |
b34976b6 AM |
2922 | plt = FALSE; |
2923 | relocs = FALSE; | |
915e5146 HPN |
2924 | for (s = dynobj->sections; s != NULL; s = s->next) |
2925 | { | |
2926 | const char *name; | |
b34976b6 | 2927 | bfd_boolean strip; |
915e5146 HPN |
2928 | |
2929 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2930 | continue; | |
2931 | ||
2932 | /* It's OK to base decisions on the section name, because none | |
2933 | of the dynobj section names depend upon the input files. */ | |
2934 | name = bfd_get_section_name (dynobj, s); | |
2935 | ||
b34976b6 | 2936 | strip = FALSE; |
915e5146 HPN |
2937 | |
2938 | if (strcmp (name, ".plt") == 0) | |
2939 | { | |
eea6121a | 2940 | if (s->size == 0) |
915e5146 HPN |
2941 | { |
2942 | /* Strip this section if we don't need it; see the | |
2943 | comment below. */ | |
b34976b6 | 2944 | strip = TRUE; |
915e5146 HPN |
2945 | } |
2946 | else | |
2947 | { | |
2948 | /* Remember whether there is a PLT. */ | |
b34976b6 | 2949 | plt = TRUE; |
915e5146 HPN |
2950 | } |
2951 | } | |
2952 | else if (strncmp (name, ".rela", 5) == 0) | |
2953 | { | |
eea6121a | 2954 | if (s->size == 0) |
915e5146 HPN |
2955 | { |
2956 | /* If we don't need this section, strip it from the | |
2957 | output file. This is mostly to handle .rela.bss and | |
2958 | .rela.plt. We must create both sections in | |
2959 | create_dynamic_sections, because they must be created | |
2960 | before the linker maps input sections to output | |
2961 | sections. The linker does that before | |
2962 | adjust_dynamic_symbol is called, and it is that | |
2963 | function which decides whether anything needs to go | |
2964 | into these sections. */ | |
b34976b6 | 2965 | strip = TRUE; |
915e5146 HPN |
2966 | } |
2967 | else | |
2968 | { | |
915e5146 HPN |
2969 | /* Remember whether there are any reloc sections other |
2970 | than .rela.plt. */ | |
2971 | if (strcmp (name, ".rela.plt") != 0) | |
b34976b6 | 2972 | relocs = TRUE; |
915e5146 | 2973 | |
915e5146 HPN |
2974 | /* We use the reloc_count field as a counter if we need |
2975 | to copy relocs into the output file. */ | |
2976 | s->reloc_count = 0; | |
2977 | } | |
2978 | } | |
2979 | else if (strncmp (name, ".got", 4) != 0) | |
2980 | { | |
2981 | /* It's not one of our sections, so don't allocate space. */ | |
2982 | continue; | |
2983 | } | |
2984 | ||
2985 | if (strip) | |
2986 | { | |
2987 | _bfd_strip_section_from_output (info, s); | |
2988 | continue; | |
2989 | } | |
2990 | ||
2991 | /* Allocate memory for the section contents. We use bfd_zalloc here | |
2992 | in case unused entries are not reclaimed before the section's | |
2993 | contents are written out. This should not happen, but this way | |
2994 | if it does, we will not write out garbage. For reloc sections, | |
2995 | this will make entries have the type R_CRIS_NONE. */ | |
eea6121a AM |
2996 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
2997 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 2998 | return FALSE; |
915e5146 HPN |
2999 | } |
3000 | ||
3001 | if (elf_hash_table (info)->dynamic_sections_created) | |
3002 | { | |
3003 | /* Add some entries to the .dynamic section. We fill in the | |
3004 | values later, in elf_cris_finish_dynamic_sections, but we | |
3005 | must add the entries now so that we get the correct size for | |
3006 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3007 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3008 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3009 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3010 | |
915e5146 HPN |
3011 | if (!info->shared) |
3012 | { | |
dc810e39 | 3013 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3014 | return FALSE; |
915e5146 HPN |
3015 | } |
3016 | ||
3017 | if (plt) | |
3018 | { | |
dc810e39 AM |
3019 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3020 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3021 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3022 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3023 | return FALSE; |
915e5146 HPN |
3024 | } |
3025 | ||
3026 | if (relocs) | |
3027 | { | |
dc810e39 AM |
3028 | if (!add_dynamic_entry (DT_RELA, 0) |
3029 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3030 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3031 | return FALSE; |
915e5146 HPN |
3032 | } |
3033 | ||
99e4ae17 | 3034 | if ((info->flags & DF_TEXTREL) != 0) |
915e5146 | 3035 | { |
dc810e39 | 3036 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3037 | return FALSE; |
915e5146 HPN |
3038 | info->flags |= DF_TEXTREL; |
3039 | } | |
3040 | } | |
dc810e39 | 3041 | #undef add_dynamic_entry |
915e5146 | 3042 | |
b34976b6 | 3043 | return TRUE; |
915e5146 HPN |
3044 | } |
3045 | ||
3046 | /* This function is called via elf_cris_link_hash_traverse if we are | |
3047 | creating a shared object. In the -Bsymbolic case, it discards the | |
3048 | space allocated to copy PC relative relocs against symbols which | |
3049 | are defined in regular objects. For the normal non-symbolic case, | |
3050 | we also discard space for relocs that have become local due to | |
3051 | symbol visibility changes. We allocated space for them in the | |
3052 | check_relocs routine, but we won't fill them in in the | |
3053 | relocate_section routine. */ | |
3054 | ||
b34976b6 | 3055 | static bfd_boolean |
4d96d128 | 3056 | elf_cris_discard_excess_dso_dynamics (h, inf) |
915e5146 HPN |
3057 | struct elf_cris_link_hash_entry *h; |
3058 | PTR inf; | |
3059 | { | |
3060 | struct elf_cris_pcrel_relocs_copied *s; | |
3061 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3062 | ||
e92d460e AM |
3063 | if (h->root.root.type == bfd_link_hash_warning) |
3064 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
3065 | ||
915e5146 HPN |
3066 | /* If a symbol has been forced local or we have found a regular |
3067 | definition for the symbolic link case, then we won't be needing | |
3068 | any relocs. */ | |
f5385ebf AM |
3069 | if (h->root.def_regular |
3070 | && (h->root.forced_local | |
915e5146 HPN |
3071 | || info->symbolic)) |
3072 | { | |
3073 | for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) | |
eea6121a | 3074 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
4d96d128 HPN |
3075 | } |
3076 | ||
b34976b6 | 3077 | return TRUE; |
4d96d128 HPN |
3078 | } |
3079 | ||
3080 | /* This function is called via elf_cris_link_hash_traverse if we are *not* | |
3081 | creating a shared object. We discard space for relocs for symbols put | |
3082 | in the .got, but which we found we do not have to resolve at run-time. */ | |
3083 | ||
b34976b6 | 3084 | static bfd_boolean |
4d96d128 HPN |
3085 | elf_cris_discard_excess_program_dynamics (h, inf) |
3086 | struct elf_cris_link_hash_entry *h; | |
3087 | PTR inf; | |
3088 | { | |
3089 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3090 | ||
e92d460e AM |
3091 | if (h->root.root.type == bfd_link_hash_warning) |
3092 | h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link; | |
3093 | ||
4d96d128 HPN |
3094 | /* If we're not creating a shared library and have a symbol which is |
3095 | referred to by .got references, but the symbol is defined locally, | |
e4a2175c HPN |
3096 | (or rather, not defined by a DSO) then lose the reloc for the .got |
3097 | (don't allocate room for it). Likewise for relocs for something | |
3098 | for which we create a PLT. */ | |
f5385ebf | 3099 | if (!h->root.def_dynamic |
e4a2175c | 3100 | || h->root.plt.refcount > 0) |
4d96d128 HPN |
3101 | { |
3102 | if (h->root.got.refcount > 0 | |
3103 | /* The size of this section is only valid and in sync with the | |
3104 | various reference counts if we do dynamic; don't decrement it | |
3105 | otherwise. */ | |
3106 | && elf_hash_table (info)->dynamic_sections_created) | |
3107 | { | |
3108 | bfd *dynobj = elf_hash_table (info)->dynobj; | |
3109 | asection *srelgot; | |
3110 | ||
3111 | BFD_ASSERT (dynobj != NULL); | |
99c79b2e | 3112 | |
4d96d128 HPN |
3113 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
3114 | ||
3115 | BFD_ASSERT (srelgot != NULL); | |
3116 | ||
eea6121a | 3117 | srelgot->size -= sizeof (Elf32_External_Rela); |
4d96d128 HPN |
3118 | } |
3119 | ||
3120 | /* If the locally-defined symbol isn't used by a DSO, then we don't | |
3121 | have to export it as a dynamic symbol. This was already done for | |
3122 | functions; doing this for all symbols would presumably not | |
e5dfef09 HPN |
3123 | introduce new problems. Of course we don't do this if we're |
3124 | exporting all dynamic symbols. */ | |
0741c7be | 3125 | if (! info->export_dynamic |
f5385ebf AM |
3126 | && !h->root.def_dynamic |
3127 | && !h->root.ref_dynamic) | |
e5dfef09 HPN |
3128 | { |
3129 | h->root.dynindx = -1; | |
3130 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
3131 | h->root.dynstr_index); | |
3132 | } | |
915e5146 HPN |
3133 | } |
3134 | ||
b34976b6 | 3135 | return TRUE; |
915e5146 HPN |
3136 | } |
3137 | ||
3138 | /* Reject a file depending on presence and expectation of prefixed | |
3139 | underscores on symbols. */ | |
4da81684 | 3140 | |
b34976b6 | 3141 | static bfd_boolean |
4da81684 HPN |
3142 | cris_elf_object_p (abfd) |
3143 | bfd *abfd; | |
3144 | { | |
bac23f82 HPN |
3145 | if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags)) |
3146 | return FALSE; | |
3147 | ||
4da81684 HPN |
3148 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)) |
3149 | return (bfd_get_symbol_leading_char (abfd) == '_'); | |
3150 | else | |
3151 | return (bfd_get_symbol_leading_char (abfd) == 0); | |
3152 | } | |
3153 | ||
bac23f82 HPN |
3154 | /* Mark presence or absence of leading underscore. Set machine type |
3155 | flags from mach type. */ | |
4da81684 HPN |
3156 | |
3157 | static void | |
3158 | cris_elf_final_write_processing (abfd, linker) | |
3159 | bfd *abfd; | |
b34976b6 | 3160 | bfd_boolean linker ATTRIBUTE_UNUSED; |
4da81684 | 3161 | { |
bac23f82 HPN |
3162 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; |
3163 | ||
3164 | e_flags &= ~EF_CRIS_UNDERSCORE; | |
4da81684 | 3165 | if (bfd_get_symbol_leading_char (abfd) == '_') |
bac23f82 HPN |
3166 | e_flags |= EF_CRIS_UNDERSCORE; |
3167 | ||
3168 | switch (bfd_get_mach (abfd)) | |
3169 | { | |
3170 | case bfd_mach_cris_v0_v10: | |
3171 | e_flags |= EF_CRIS_VARIANT_ANY_V0_V10; | |
3172 | break; | |
3173 | ||
3174 | case bfd_mach_cris_v10_v32: | |
3175 | e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32; | |
3176 | break; | |
3177 | ||
3178 | case bfd_mach_cris_v32: | |
3179 | e_flags |= EF_CRIS_VARIANT_V32; | |
3180 | break; | |
3181 | ||
3182 | default: | |
3183 | _bfd_abort (__FILE__, __LINE__, | |
3184 | _("Unexpected machine number")); | |
3185 | } | |
3186 | ||
3187 | elf_elfheader (abfd)->e_flags = e_flags; | |
3188 | } | |
3189 | ||
3190 | /* Set the mach type from e_flags value. */ | |
3191 | ||
3192 | static bfd_boolean | |
3193 | cris_elf_set_mach_from_flags (abfd, flags) | |
3194 | bfd *abfd; | |
3195 | unsigned long flags; | |
3196 | { | |
3197 | switch (flags & EF_CRIS_VARIANT_MASK) | |
3198 | { | |
3199 | case EF_CRIS_VARIANT_ANY_V0_V10: | |
3200 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10); | |
3201 | break; | |
3202 | ||
3203 | case EF_CRIS_VARIANT_V32: | |
3204 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32); | |
3205 | break; | |
3206 | ||
3207 | case EF_CRIS_VARIANT_COMMON_V10_V32: | |
3208 | bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32); | |
3209 | break; | |
3210 | ||
3211 | default: | |
3212 | /* Since we don't recognize them, we obviously can't support them | |
3213 | with this code; we'd have to require that all future handling | |
3214 | would be optional. */ | |
3215 | bfd_set_error (bfd_error_wrong_format); | |
3216 | return FALSE; | |
3217 | } | |
3218 | ||
3219 | return TRUE; | |
4da81684 HPN |
3220 | } |
3221 | ||
3222 | /* Display the flags field. */ | |
3223 | ||
b34976b6 | 3224 | static bfd_boolean |
4da81684 HPN |
3225 | cris_elf_print_private_bfd_data (abfd, ptr) |
3226 | bfd *abfd; | |
3227 | PTR ptr; | |
3228 | { | |
3229 | FILE *file = (FILE *) ptr; | |
3230 | ||
f12123c0 | 3231 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
4da81684 HPN |
3232 | |
3233 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
3234 | ||
3235 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
3236 | ||
3237 | if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE) | |
3238 | fprintf (file, _(" [symbols have a _ prefix]")); | |
bac23f82 HPN |
3239 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) |
3240 | == EF_CRIS_VARIANT_COMMON_V10_V32) | |
3241 | fprintf (file, _(" [v10 and v32]")); | |
3242 | if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) | |
3243 | == EF_CRIS_VARIANT_V32) | |
3244 | fprintf (file, _(" [v32]")); | |
4da81684 HPN |
3245 | |
3246 | fputc ('\n', file); | |
b34976b6 | 3247 | return TRUE; |
4da81684 HPN |
3248 | } |
3249 | ||
3250 | /* Don't mix files with and without a leading underscore. */ | |
3251 | ||
b34976b6 | 3252 | static bfd_boolean |
4da81684 HPN |
3253 | cris_elf_merge_private_bfd_data (ibfd, obfd) |
3254 | bfd *ibfd; | |
3255 | bfd *obfd; | |
3256 | { | |
bac23f82 | 3257 | int imach, omach; |
4da81684 | 3258 | |
82e51918 | 3259 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 3260 | return FALSE; |
4da81684 HPN |
3261 | |
3262 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3263 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 3264 | return TRUE; |
4da81684 | 3265 | |
bac23f82 HPN |
3266 | imach = bfd_get_mach (ibfd); |
3267 | ||
4da81684 HPN |
3268 | if (! elf_flags_init (obfd)) |
3269 | { | |
3270 | /* This happens when ld starts out with a 'blank' output file. */ | |
b34976b6 | 3271 | elf_flags_init (obfd) = TRUE; |
4da81684 | 3272 | |
bac23f82 HPN |
3273 | /* We ignore the linker-set mach, and instead set it according to |
3274 | the first input file. This would also happen if we could | |
3275 | somehow filter out the OUTPUT_ARCH () setting from elf.sc. | |
3276 | This allows us to keep the same linker config across | |
3277 | cris(v0..v10) and crisv32. The drawback is that we can't force | |
3278 | the output type, which might be a sane thing to do for a | |
3279 | v10+v32 compatibility object. */ | |
3280 | if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
3281 | return FALSE; | |
4da81684 HPN |
3282 | } |
3283 | ||
bac23f82 HPN |
3284 | if (bfd_get_symbol_leading_char (ibfd) |
3285 | != bfd_get_symbol_leading_char (obfd)) | |
4da81684 HPN |
3286 | { |
3287 | (*_bfd_error_handler) | |
bac23f82 | 3288 | (bfd_get_symbol_leading_char (ibfd) == '_' |
d003868e AM |
3289 | ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols") |
3290 | : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"), | |
3291 | ibfd); | |
4da81684 | 3292 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3293 | return FALSE; |
4da81684 HPN |
3294 | } |
3295 | ||
bac23f82 HPN |
3296 | omach = bfd_get_mach (obfd); |
3297 | ||
3298 | if (imach != omach) | |
3299 | { | |
3300 | /* We can get an incompatible combination only if either is | |
3301 | bfd_mach_cris_v32, and the other one isn't compatible. */ | |
3302 | if ((imach == bfd_mach_cris_v32 | |
3303 | && omach != bfd_mach_cris_v10_v32) | |
3304 | || (omach == bfd_mach_cris_v32 | |
3305 | && imach != bfd_mach_cris_v10_v32)) | |
3306 | { | |
3307 | (*_bfd_error_handler) | |
3308 | ((imach == bfd_mach_cris_v32) | |
3309 | ? _("%B contains CRIS v32 code, incompatible" | |
3310 | " with previous objects") | |
3311 | : _("%B contains non-CRIS-v32 code, incompatible" | |
3312 | " with previous objects"), | |
3313 | ibfd); | |
3314 | bfd_set_error (bfd_error_bad_value); | |
3315 | return FALSE; | |
3316 | } | |
3317 | ||
3318 | /* We don't have to check the case where the input is compatible | |
3319 | with v10 and v32, because the output is already known to be set | |
3320 | to the other (compatible) mach. */ | |
3321 | if (omach == bfd_mach_cris_v10_v32 | |
3322 | && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) | |
3323 | return FALSE; | |
3324 | } | |
3325 | ||
b34976b6 | 3326 | return TRUE; |
4da81684 | 3327 | } |
99e4ae17 | 3328 | |
bac23f82 HPN |
3329 | /* Do side-effects of e_flags copying to obfd. */ |
3330 | ||
3331 | static bfd_boolean | |
3332 | cris_elf_copy_private_bfd_data (ibfd, obfd) | |
3333 | bfd *ibfd; | |
3334 | bfd *obfd; | |
3335 | { | |
3336 | /* Call the base function. */ | |
3337 | if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd)) | |
3338 | return FALSE; | |
3339 | ||
3340 | /* If output is big-endian for some obscure reason, stop here. */ | |
3341 | if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE) | |
3342 | return FALSE; | |
3343 | ||
3344 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
3345 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
3346 | return TRUE; | |
3347 | ||
3348 | /* Do what we really came here for. */ | |
3349 | return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd)); | |
3350 | } | |
99e4ae17 AJ |
3351 | |
3352 | static enum elf_reloc_type_class | |
f51e552e AM |
3353 | elf_cris_reloc_type_class (rela) |
3354 | const Elf_Internal_Rela *rela; | |
99e4ae17 | 3355 | { |
f51e552e | 3356 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
3357 | { |
3358 | case R_CRIS_RELATIVE: | |
3359 | return reloc_class_relative; | |
3360 | case R_CRIS_JUMP_SLOT: | |
3361 | return reloc_class_plt; | |
3362 | case R_CRIS_COPY: | |
3363 | return reloc_class_copy; | |
3364 | default: | |
3365 | return reloc_class_normal; | |
3366 | } | |
3367 | } | |
06c15ad7 HPN |
3368 | \f |
3369 | #define ELF_ARCH bfd_arch_cris | |
3370 | #define ELF_MACHINE_CODE EM_CRIS | |
3371 | #define ELF_MAXPAGESIZE 0x2000 | |
3372 | ||
3373 | #define TARGET_LITTLE_SYM bfd_elf32_cris_vec | |
3374 | #define TARGET_LITTLE_NAME "elf32-cris" | |
4da81684 | 3375 | #define elf_symbol_leading_char 0 |
06c15ad7 HPN |
3376 | |
3377 | #define elf_info_to_howto_rel NULL | |
3378 | #define elf_info_to_howto cris_info_to_howto_rela | |
3379 | #define elf_backend_relocate_section cris_elf_relocate_section | |
3380 | #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook | |
3381 | #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook | |
3382 | #define elf_backend_check_relocs cris_elf_check_relocs | |
72209a1f HPN |
3383 | #define elf_backend_grok_prstatus cris_elf_grok_prstatus |
3384 | #define elf_backend_grok_psinfo cris_elf_grok_psinfo | |
06c15ad7 HPN |
3385 | |
3386 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3387 | #define elf_backend_can_refcount 1 |
06c15ad7 | 3388 | |
4da81684 HPN |
3389 | #define elf_backend_object_p cris_elf_object_p |
3390 | #define elf_backend_final_write_processing \ | |
3391 | cris_elf_final_write_processing | |
3392 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
3393 | cris_elf_print_private_bfd_data | |
3394 | #define bfd_elf32_bfd_merge_private_bfd_data \ | |
3395 | cris_elf_merge_private_bfd_data | |
bac23f82 HPN |
3396 | #define bfd_elf32_bfd_copy_private_bfd_data \ |
3397 | cris_elf_copy_private_bfd_data | |
4da81684 | 3398 | |
06c15ad7 HPN |
3399 | #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup |
3400 | ||
915e5146 HPN |
3401 | #define bfd_elf32_bfd_link_hash_table_create \ |
3402 | elf_cris_link_hash_table_create | |
3403 | #define elf_backend_adjust_dynamic_symbol \ | |
3404 | elf_cris_adjust_dynamic_symbol | |
3405 | #define elf_backend_size_dynamic_sections \ | |
3406 | elf_cris_size_dynamic_sections | |
3407 | #define elf_backend_finish_dynamic_symbol \ | |
3408 | elf_cris_finish_dynamic_symbol | |
3409 | #define elf_backend_finish_dynamic_sections \ | |
3410 | elf_cris_finish_dynamic_sections | |
3411 | #define elf_backend_create_dynamic_sections \ | |
3412 | _bfd_elf_create_dynamic_sections | |
3413 | #define bfd_elf32_bfd_final_link \ | |
c152c796 | 3414 | bfd_elf_gc_common_final_link |
915e5146 | 3415 | #define elf_backend_hide_symbol elf_cris_hide_symbol |
99e4ae17 | 3416 | #define elf_backend_reloc_type_class elf_cris_reloc_type_class |
915e5146 HPN |
3417 | |
3418 | #define elf_backend_want_got_plt 1 | |
3419 | #define elf_backend_plt_readonly 1 | |
3420 | #define elf_backend_want_plt_sym 0 | |
3421 | #define elf_backend_got_header_size 12 | |
915e5146 | 3422 | |
06c15ad7 HPN |
3423 | /* Later, we my want to optimize RELA entries into REL entries for dynamic |
3424 | linking and libraries (if it's a win of any significance). Until then, | |
3425 | take the easy route. */ | |
3426 | #define elf_backend_may_use_rel_p 0 | |
3427 | #define elf_backend_may_use_rela_p 1 | |
f0fe0e16 | 3428 | #define elf_backend_rela_normal 1 |
06c15ad7 HPN |
3429 | |
3430 | #include "elf32-target.h" | |
4da81684 HPN |
3431 | |
3432 | #define INCLUDED_TARGET_FILE | |
3433 | ||
3434 | #undef TARGET_LITTLE_SYM | |
3435 | #undef TARGET_LITTLE_NAME | |
3436 | #undef elf_symbol_leading_char | |
3437 | ||
3438 | #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec | |
3439 | #define TARGET_LITTLE_NAME "elf32-us-cris" | |
3440 | #define elf_symbol_leading_char '_' | |
3441 | ||
3442 | #include "elf32-target.h" |