elf32-cris.c revision 1.1.1.2 1 1.1 skrll /* CRIS-specific support for 32-bit ELF.
2 1.1.1.2 christos Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3 1.1.1.2 christos 2010 Free Software Foundation, Inc.
4 1.1 skrll Contributed by Axis Communications AB.
5 1.1 skrll Written by Hans-Peter Nilsson, based on elf32-fr30.c
6 1.1 skrll PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
7 1.1 skrll
8 1.1 skrll This file is part of BFD, the Binary File Descriptor library.
9 1.1 skrll
10 1.1 skrll This program is free software; you can redistribute it and/or modify
11 1.1 skrll it under the terms of the GNU General Public License as published by
12 1.1 skrll the Free Software Foundation; either version 3 of the License, or
13 1.1 skrll (at your option) any later version.
14 1.1 skrll
15 1.1 skrll This program is distributed in the hope that it will be useful,
16 1.1 skrll but WITHOUT ANY WARRANTY; without even the implied warranty of
17 1.1 skrll MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 1.1 skrll GNU General Public License for more details.
19 1.1 skrll
20 1.1 skrll You should have received a copy of the GNU General Public License
21 1.1 skrll along with this program; if not, write to the Free Software
22 1.1 skrll Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 1.1 skrll MA 02110-1301, USA. */
24 1.1 skrll
25 1.1 skrll #include "sysdep.h"
26 1.1 skrll #include "bfd.h"
27 1.1 skrll #include "libbfd.h"
28 1.1 skrll #include "elf-bfd.h"
29 1.1 skrll #include "elf/cris.h"
30 1.1.1.2 christos #include <limits.h>
31 1.1 skrll
32 1.1 skrll /* Forward declarations. */
33 1.1 skrll static reloc_howto_type * cris_reloc_type_lookup
34 1.1 skrll PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
35 1.1 skrll
36 1.1 skrll static void cris_info_to_howto_rela
37 1.1 skrll PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
38 1.1 skrll
39 1.1 skrll static bfd_reloc_status_type cris_elf_pcrel_reloc
40 1.1 skrll PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41 1.1 skrll
42 1.1 skrll static bfd_boolean cris_elf_grok_prstatus
43 1.1 skrll PARAMS ((bfd *abfd, Elf_Internal_Note *note));
44 1.1 skrll
45 1.1 skrll static bfd_boolean cris_elf_grok_psinfo
46 1.1 skrll PARAMS ((bfd *abfd, Elf_Internal_Note *note));
47 1.1 skrll
48 1.1 skrll static bfd_boolean cris_elf_relocate_section
49 1.1 skrll PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 1.1 skrll Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
51 1.1 skrll
52 1.1 skrll static bfd_reloc_status_type cris_final_link_relocate
53 1.1 skrll PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
54 1.1 skrll Elf_Internal_Rela *, bfd_vma));
55 1.1 skrll
56 1.1 skrll static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
57 1.1 skrll
58 1.1 skrll static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
59 1.1 skrll
60 1.1 skrll static bfd_boolean cris_elf_set_mach_from_flags
61 1.1 skrll PARAMS ((bfd *, unsigned long int));
62 1.1 skrll
63 1.1 skrll static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
64 1.1 skrll
65 1.1 skrll static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
66 1.1 skrll static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
67 1.1 skrll
68 1.1 skrll struct elf_cris_link_hash_entry;
69 1.1 skrll static bfd_boolean elf_cris_discard_excess_dso_dynamics
70 1.1 skrll PARAMS ((struct elf_cris_link_hash_entry *, PTR));
71 1.1 skrll static bfd_boolean elf_cris_discard_excess_program_dynamics
72 1.1 skrll PARAMS ((struct elf_cris_link_hash_entry *, PTR));
73 1.1 skrll static bfd_boolean elf_cris_adjust_gotplt_to_got
74 1.1 skrll PARAMS ((struct elf_cris_link_hash_entry *, PTR));
75 1.1 skrll static bfd_boolean elf_cris_try_fold_plt_to_got
76 1.1 skrll PARAMS ((struct elf_cris_link_hash_entry *, PTR));
77 1.1 skrll static struct bfd_hash_entry *elf_cris_link_hash_newfunc
78 1.1 skrll PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
79 1.1 skrll static struct bfd_link_hash_table *elf_cris_link_hash_table_create
80 1.1 skrll PARAMS ((bfd *));
81 1.1 skrll static bfd_boolean elf_cris_adjust_dynamic_symbol
82 1.1 skrll PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
83 1.1 skrll static bfd_boolean cris_elf_check_relocs
84 1.1 skrll PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 1.1 skrll const Elf_Internal_Rela *));
86 1.1 skrll
87 1.1 skrll static bfd_boolean elf_cris_size_dynamic_sections
88 1.1 skrll PARAMS ((bfd *, struct bfd_link_info *));
89 1.1 skrll static bfd_boolean elf_cris_finish_dynamic_symbol
90 1.1 skrll PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 1.1 skrll Elf_Internal_Sym *));
92 1.1 skrll static bfd_boolean elf_cris_finish_dynamic_sections
93 1.1 skrll PARAMS ((bfd *, struct bfd_link_info *));
94 1.1 skrll static void elf_cris_hide_symbol
95 1.1 skrll PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
96 1.1 skrll static enum elf_reloc_type_class elf_cris_reloc_type_class
97 1.1 skrll PARAMS ((const Elf_Internal_Rela *));
98 1.1 skrll
99 1.1 skrll static reloc_howto_type cris_elf_howto_table [] =
100 1.1 skrll {
101 1.1 skrll /* This reloc does nothing. */
102 1.1 skrll HOWTO (R_CRIS_NONE, /* type */
103 1.1 skrll 0, /* rightshift */
104 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
105 1.1 skrll 32, /* bitsize */
106 1.1 skrll FALSE, /* pc_relative */
107 1.1 skrll 0, /* bitpos */
108 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
109 1.1 skrll bfd_elf_generic_reloc, /* special_function */
110 1.1 skrll "R_CRIS_NONE", /* name */
111 1.1 skrll FALSE, /* partial_inplace */
112 1.1 skrll 0, /* src_mask */
113 1.1 skrll 0, /* dst_mask */
114 1.1 skrll FALSE), /* pcrel_offset */
115 1.1 skrll
116 1.1 skrll /* An 8 bit absolute relocation. */
117 1.1 skrll HOWTO (R_CRIS_8, /* type */
118 1.1 skrll 0, /* rightshift */
119 1.1 skrll 0, /* size (0 = byte, 1 = short, 2 = long) */
120 1.1 skrll 8, /* bitsize */
121 1.1 skrll FALSE, /* pc_relative */
122 1.1 skrll 0, /* bitpos */
123 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
124 1.1 skrll bfd_elf_generic_reloc, /* special_function */
125 1.1 skrll "R_CRIS_8", /* name */
126 1.1 skrll FALSE, /* partial_inplace */
127 1.1 skrll 0x0000, /* src_mask */
128 1.1 skrll 0x00ff, /* dst_mask */
129 1.1 skrll FALSE), /* pcrel_offset */
130 1.1 skrll
131 1.1 skrll /* A 16 bit absolute relocation. */
132 1.1 skrll HOWTO (R_CRIS_16, /* type */
133 1.1 skrll 0, /* rightshift */
134 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
135 1.1 skrll 16, /* bitsize */
136 1.1 skrll FALSE, /* pc_relative */
137 1.1 skrll 0, /* bitpos */
138 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
139 1.1 skrll bfd_elf_generic_reloc, /* special_function */
140 1.1 skrll "R_CRIS_16", /* name */
141 1.1 skrll FALSE, /* partial_inplace */
142 1.1 skrll 0x00000000, /* src_mask */
143 1.1 skrll 0x0000ffff, /* dst_mask */
144 1.1 skrll FALSE), /* pcrel_offset */
145 1.1 skrll
146 1.1 skrll /* A 32 bit absolute relocation. */
147 1.1 skrll HOWTO (R_CRIS_32, /* type */
148 1.1 skrll 0, /* rightshift */
149 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
150 1.1 skrll 32, /* bitsize */
151 1.1 skrll FALSE, /* pc_relative */
152 1.1 skrll 0, /* bitpos */
153 1.1 skrll /* We don't want overflow complaints for 64-bit vma builds
154 1.1 skrll for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
155 1.1 skrll 32-bit ELF) where sym=0xc0001234.
156 1.1 skrll Don't do this for the PIC relocs, as we don't expect to
157 1.1 skrll see them with large offsets. */
158 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
159 1.1 skrll bfd_elf_generic_reloc, /* special_function */
160 1.1 skrll "R_CRIS_32", /* name */
161 1.1 skrll FALSE, /* partial_inplace */
162 1.1 skrll 0x00000000, /* src_mask */
163 1.1 skrll 0xffffffff, /* dst_mask */
164 1.1 skrll FALSE), /* pcrel_offset */
165 1.1 skrll
166 1.1 skrll /* An 8 bit PC-relative relocation. */
167 1.1 skrll HOWTO (R_CRIS_8_PCREL, /* type */
168 1.1 skrll 0, /* rightshift */
169 1.1 skrll 0, /* size (0 = byte, 1 = short, 2 = long) */
170 1.1 skrll 8, /* bitsize */
171 1.1 skrll TRUE, /* pc_relative */
172 1.1 skrll 0, /* bitpos */
173 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
174 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
175 1.1 skrll "R_CRIS_8_PCREL", /* name */
176 1.1 skrll FALSE, /* partial_inplace */
177 1.1 skrll 0x0000, /* src_mask */
178 1.1 skrll 0x00ff, /* dst_mask */
179 1.1 skrll TRUE), /* pcrel_offset */
180 1.1 skrll
181 1.1 skrll /* A 16 bit PC-relative relocation. */
182 1.1 skrll HOWTO (R_CRIS_16_PCREL, /* type */
183 1.1 skrll 0, /* rightshift */
184 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
185 1.1 skrll 16, /* bitsize */
186 1.1 skrll TRUE, /* pc_relative */
187 1.1 skrll 0, /* bitpos */
188 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
189 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
190 1.1 skrll "R_CRIS_16_PCREL", /* name */
191 1.1 skrll FALSE, /* partial_inplace */
192 1.1 skrll 0x00000000, /* src_mask */
193 1.1 skrll 0x0000ffff, /* dst_mask */
194 1.1 skrll TRUE), /* pcrel_offset */
195 1.1 skrll
196 1.1 skrll /* A 32 bit PC-relative relocation. */
197 1.1 skrll HOWTO (R_CRIS_32_PCREL, /* type */
198 1.1 skrll 0, /* rightshift */
199 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
200 1.1 skrll 32, /* bitsize */
201 1.1 skrll TRUE, /* pc_relative */
202 1.1 skrll 0, /* bitpos */
203 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
204 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
205 1.1 skrll "R_CRIS_32_PCREL", /* name */
206 1.1 skrll FALSE, /* partial_inplace */
207 1.1 skrll 0x00000000, /* src_mask */
208 1.1 skrll 0xffffffff, /* dst_mask */
209 1.1 skrll TRUE), /* pcrel_offset */
210 1.1 skrll
211 1.1 skrll /* GNU extension to record C++ vtable hierarchy. */
212 1.1 skrll HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
213 1.1 skrll 0, /* rightshift */
214 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
215 1.1 skrll 0, /* bitsize */
216 1.1 skrll FALSE, /* pc_relative */
217 1.1 skrll 0, /* bitpos */
218 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
219 1.1 skrll NULL, /* special_function */
220 1.1 skrll "R_CRIS_GNU_VTINHERIT", /* name */
221 1.1 skrll FALSE, /* partial_inplace */
222 1.1 skrll 0, /* src_mask */
223 1.1 skrll 0, /* dst_mask */
224 1.1 skrll FALSE), /* pcrel_offset */
225 1.1 skrll
226 1.1 skrll /* GNU extension to record C++ vtable member usage. */
227 1.1 skrll HOWTO (R_CRIS_GNU_VTENTRY, /* type */
228 1.1 skrll 0, /* rightshift */
229 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
230 1.1 skrll 0, /* bitsize */
231 1.1 skrll FALSE, /* pc_relative */
232 1.1 skrll 0, /* bitpos */
233 1.1 skrll complain_overflow_dont, /* complain_on_overflow */
234 1.1 skrll _bfd_elf_rel_vtable_reloc_fn, /* special_function */
235 1.1 skrll "R_CRIS_GNU_VTENTRY", /* name */
236 1.1 skrll FALSE, /* partial_inplace */
237 1.1 skrll 0, /* src_mask */
238 1.1 skrll 0, /* dst_mask */
239 1.1 skrll FALSE), /* pcrel_offset */
240 1.1 skrll
241 1.1 skrll /* This is used only by the dynamic linker. The symbol should exist
242 1.1 skrll both in the object being run and in some shared library. The
243 1.1 skrll dynamic linker copies the data addressed by the symbol from the
244 1.1 skrll shared library into the object, because the object being
245 1.1 skrll run has to have the data at some particular address. */
246 1.1 skrll HOWTO (R_CRIS_COPY, /* type */
247 1.1 skrll 0, /* rightshift */
248 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
249 1.1 skrll 32, /* bitsize */
250 1.1 skrll FALSE, /* pc_relative */
251 1.1 skrll 0, /* bitpos */
252 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
253 1.1 skrll bfd_elf_generic_reloc, /* special_function */
254 1.1 skrll "R_CRIS_COPY", /* name */
255 1.1 skrll FALSE, /* partial_inplace */
256 1.1 skrll 0, /* src_mask */
257 1.1 skrll 0, /* dst_mask */
258 1.1 skrll FALSE), /* pcrel_offset */
259 1.1 skrll
260 1.1 skrll /* Like R_CRIS_32, but used when setting global offset table entries. */
261 1.1 skrll HOWTO (R_CRIS_GLOB_DAT, /* type */
262 1.1 skrll 0, /* rightshift */
263 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
264 1.1 skrll 32, /* bitsize */
265 1.1 skrll FALSE, /* pc_relative */
266 1.1 skrll 0, /* bitpos */
267 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
268 1.1 skrll bfd_elf_generic_reloc, /* special_function */
269 1.1 skrll "R_CRIS_GLOB_DAT", /* name */
270 1.1 skrll FALSE, /* partial_inplace */
271 1.1 skrll 0, /* src_mask */
272 1.1 skrll 0xffffffff, /* dst_mask */
273 1.1 skrll FALSE), /* pcrel_offset */
274 1.1 skrll
275 1.1 skrll /* Marks a procedure linkage table entry for a symbol. */
276 1.1 skrll HOWTO (R_CRIS_JUMP_SLOT, /* type */
277 1.1 skrll 0, /* rightshift */
278 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
279 1.1 skrll 32, /* bitsize */
280 1.1 skrll FALSE, /* pc_relative */
281 1.1 skrll 0, /* bitpos */
282 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
283 1.1 skrll bfd_elf_generic_reloc, /* special_function */
284 1.1 skrll "R_CRIS_JUMP_SLOT", /* name */
285 1.1 skrll FALSE, /* partial_inplace */
286 1.1 skrll 0, /* src_mask */
287 1.1 skrll 0, /* dst_mask */
288 1.1 skrll FALSE), /* pcrel_offset */
289 1.1 skrll
290 1.1 skrll /* Used only by the dynamic linker. When the object is run, this
291 1.1 skrll longword is set to the load address of the object, plus the
292 1.1 skrll addend. */
293 1.1 skrll HOWTO (R_CRIS_RELATIVE, /* type */
294 1.1 skrll 0, /* rightshift */
295 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
296 1.1 skrll 32, /* bitsize */
297 1.1 skrll FALSE, /* pc_relative */
298 1.1 skrll 0, /* bitpos */
299 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
300 1.1 skrll bfd_elf_generic_reloc, /* special_function */
301 1.1 skrll "R_CRIS_RELATIVE", /* name */
302 1.1 skrll FALSE, /* partial_inplace */
303 1.1 skrll 0, /* src_mask */
304 1.1 skrll 0xffffffff, /* dst_mask */
305 1.1 skrll FALSE), /* pcrel_offset */
306 1.1 skrll
307 1.1 skrll /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
308 1.1 skrll HOWTO (R_CRIS_16_GOT, /* type */
309 1.1 skrll 0, /* rightshift */
310 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
311 1.1 skrll 16, /* bitsize */
312 1.1 skrll FALSE, /* pc_relative */
313 1.1 skrll 0, /* bitpos */
314 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
315 1.1 skrll bfd_elf_generic_reloc, /* special_function */
316 1.1 skrll "R_CRIS_16_GOT", /* name */
317 1.1 skrll FALSE, /* partial_inplace */
318 1.1 skrll 0, /* src_mask */
319 1.1 skrll 0xffff, /* dst_mask */
320 1.1 skrll FALSE), /* pcrel_offset */
321 1.1 skrll
322 1.1 skrll HOWTO (R_CRIS_32_GOT, /* type */
323 1.1 skrll 0, /* rightshift */
324 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
325 1.1 skrll 32, /* bitsize */
326 1.1 skrll FALSE, /* pc_relative */
327 1.1 skrll 0, /* bitpos */
328 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
329 1.1 skrll bfd_elf_generic_reloc, /* special_function */
330 1.1 skrll "R_CRIS_32_GOT", /* name */
331 1.1 skrll FALSE, /* partial_inplace */
332 1.1 skrll 0, /* src_mask */
333 1.1 skrll 0xffffffff, /* dst_mask */
334 1.1 skrll FALSE), /* pcrel_offset */
335 1.1 skrll
336 1.1 skrll /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
337 1.1 skrll the GOT table for the symbol. */
338 1.1 skrll HOWTO (R_CRIS_16_GOTPLT, /* type */
339 1.1 skrll 0, /* rightshift */
340 1.1 skrll 1, /* size (0 = byte, 1 = short, 2 = long) */
341 1.1 skrll 16, /* bitsize */
342 1.1 skrll FALSE, /* pc_relative */
343 1.1 skrll 0, /* bitpos */
344 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
345 1.1 skrll bfd_elf_generic_reloc, /* special_function */
346 1.1 skrll "R_CRIS_16_GOTPLT", /* name */
347 1.1 skrll FALSE, /* partial_inplace */
348 1.1 skrll 0, /* src_mask */
349 1.1 skrll 0xffff, /* dst_mask */
350 1.1 skrll FALSE), /* pcrel_offset */
351 1.1 skrll
352 1.1 skrll HOWTO (R_CRIS_32_GOTPLT, /* type */
353 1.1 skrll 0, /* rightshift */
354 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
355 1.1 skrll 32, /* bitsize */
356 1.1 skrll FALSE, /* pc_relative */
357 1.1 skrll 0, /* bitpos */
358 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
359 1.1 skrll bfd_elf_generic_reloc, /* special_function */
360 1.1 skrll "R_CRIS_32_GOTPLT", /* name */
361 1.1 skrll FALSE, /* partial_inplace */
362 1.1 skrll 0, /* src_mask */
363 1.1 skrll 0xffffffff, /* dst_mask */
364 1.1 skrll FALSE), /* pcrel_offset */
365 1.1 skrll
366 1.1 skrll /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
367 1.1 skrll be necessary. */
368 1.1 skrll HOWTO (R_CRIS_32_GOTREL, /* type */
369 1.1 skrll 0, /* rightshift */
370 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
371 1.1 skrll 32, /* bitsize */
372 1.1 skrll FALSE, /* pc_relative */
373 1.1 skrll 0, /* bitpos */
374 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
375 1.1 skrll bfd_elf_generic_reloc, /* special_function */
376 1.1 skrll "R_CRIS_32_GOTREL", /* name */
377 1.1 skrll FALSE, /* partial_inplace */
378 1.1 skrll 0, /* src_mask */
379 1.1 skrll 0xffffffff, /* dst_mask */
380 1.1 skrll FALSE), /* pcrel_offset */
381 1.1 skrll
382 1.1 skrll /* A 32-bit offset from GOT to entry for this symbol in PLT and request
383 1.1 skrll to create PLT entry for symbol. */
384 1.1 skrll HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
385 1.1 skrll 0, /* rightshift */
386 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
387 1.1 skrll 32, /* bitsize */
388 1.1 skrll FALSE, /* pc_relative */
389 1.1 skrll 0, /* bitpos */
390 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
391 1.1 skrll bfd_elf_generic_reloc, /* special_function */
392 1.1 skrll "R_CRIS_32_PLT_GOTREL", /* name */
393 1.1 skrll FALSE, /* partial_inplace */
394 1.1 skrll 0, /* src_mask */
395 1.1 skrll 0xffffffff, /* dst_mask */
396 1.1 skrll FALSE), /* pcrel_offset */
397 1.1 skrll
398 1.1 skrll /* A 32-bit offset from PC (location after the relocation) + addend to
399 1.1 skrll entry for this symbol in PLT and request to create PLT entry for
400 1.1 skrll symbol. */
401 1.1 skrll HOWTO (R_CRIS_32_PLT_PCREL, /* type */
402 1.1 skrll 0, /* rightshift */
403 1.1 skrll 2, /* size (0 = byte, 1 = short, 2 = long) */
404 1.1 skrll 32, /* bitsize */
405 1.1 skrll TRUE, /* pc_relative */
406 1.1 skrll 0, /* bitpos */
407 1.1 skrll complain_overflow_bitfield, /* complain_on_overflow */
408 1.1 skrll cris_elf_pcrel_reloc, /* special_function */
409 1.1 skrll "R_CRIS_32_PLT_PCREL", /* name */
410 1.1 skrll FALSE, /* partial_inplace */
411 1.1 skrll 0, /* src_mask */
412 1.1 skrll 0xffffffff, /* dst_mask */
413 1.1.1.2 christos TRUE), /* pcrel_offset */
414 1.1.1.2 christos
415 1.1.1.2 christos /* We don't handle these in any special manner and cross-format
416 1.1.1.2 christos linking is not supported; just recognize them enough to pass them
417 1.1.1.2 christos around. FIXME: do the same for most PIC relocs and add sanity
418 1.1.1.2 christos tests to actually refuse gracefully to handle these and PIC
419 1.1.1.2 christos relocs for cross-format linking. */
420 1.1.1.2 christos #define TLSHOWTO32(name) \
421 1.1.1.2 christos HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
422 1.1.1.2 christos bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
423 1.1.1.2 christos #define TLSHOWTO16X(name, X) \
424 1.1.1.2 christos HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
425 1.1.1.2 christos bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
426 1.1.1.2 christos #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
427 1.1.1.2 christos #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
428 1.1.1.2 christos
429 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_GOT_GD),
430 1.1.1.2 christos TLSHOWTO16 (R_CRIS_16_GOT_GD),
431 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_GD),
432 1.1.1.2 christos TLSHOWTO32 (R_CRIS_DTP),
433 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_DTPREL),
434 1.1.1.2 christos TLSHOWTO16S (R_CRIS_16_DTPREL),
435 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
436 1.1.1.2 christos TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
437 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_TPREL),
438 1.1.1.2 christos TLSHOWTO16S (R_CRIS_16_TPREL),
439 1.1.1.2 christos TLSHOWTO32 (R_CRIS_DTPMOD),
440 1.1.1.2 christos TLSHOWTO32 (R_CRIS_32_IE)
441 1.1 skrll };
442 1.1 skrll
443 1.1 skrll /* Map BFD reloc types to CRIS ELF reloc types. */
445 1.1 skrll
446 1.1 skrll struct cris_reloc_map
447 1.1 skrll {
448 1.1 skrll bfd_reloc_code_real_type bfd_reloc_val;
449 1.1 skrll unsigned int cris_reloc_val;
450 1.1 skrll };
451 1.1 skrll
452 1.1 skrll static const struct cris_reloc_map cris_reloc_map [] =
453 1.1 skrll {
454 1.1 skrll { BFD_RELOC_NONE, R_CRIS_NONE },
455 1.1 skrll { BFD_RELOC_8, R_CRIS_8 },
456 1.1 skrll { BFD_RELOC_16, R_CRIS_16 },
457 1.1 skrll { BFD_RELOC_32, R_CRIS_32 },
458 1.1 skrll { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
459 1.1 skrll { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
460 1.1 skrll { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
461 1.1 skrll { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
462 1.1 skrll { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
463 1.1 skrll { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
464 1.1 skrll { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
465 1.1 skrll { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
466 1.1 skrll { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
467 1.1 skrll { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
468 1.1 skrll { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
469 1.1 skrll { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
470 1.1 skrll { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
471 1.1 skrll { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
472 1.1.1.2 christos { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
473 1.1.1.2 christos { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
474 1.1.1.2 christos { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
475 1.1.1.2 christos { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
476 1.1.1.2 christos { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
477 1.1.1.2 christos { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
478 1.1.1.2 christos { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
479 1.1.1.2 christos { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
480 1.1.1.2 christos { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
481 1.1.1.2 christos { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
482 1.1.1.2 christos { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
483 1.1.1.2 christos { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
484 1.1.1.2 christos { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
485 1.1 skrll { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
486 1.1 skrll };
487 1.1 skrll
488 1.1 skrll static reloc_howto_type *
489 1.1 skrll cris_reloc_type_lookup (abfd, code)
490 1.1 skrll bfd * abfd ATTRIBUTE_UNUSED;
491 1.1 skrll bfd_reloc_code_real_type code;
492 1.1 skrll {
493 1.1 skrll unsigned int i;
494 1.1 skrll
495 1.1 skrll for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
496 1.1 skrll if (cris_reloc_map [i].bfd_reloc_val == code)
497 1.1 skrll return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
498 1.1 skrll
499 1.1 skrll return NULL;
500 1.1 skrll }
501 1.1 skrll
502 1.1 skrll static reloc_howto_type *
503 1.1 skrll cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
504 1.1 skrll {
505 1.1 skrll unsigned int i;
506 1.1 skrll
507 1.1 skrll for (i = 0;
508 1.1 skrll i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
509 1.1 skrll i++)
510 1.1 skrll if (cris_elf_howto_table[i].name != NULL
511 1.1 skrll && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
512 1.1 skrll return &cris_elf_howto_table[i];
513 1.1 skrll
514 1.1 skrll return NULL;
515 1.1 skrll }
516 1.1 skrll
517 1.1 skrll /* Set the howto pointer for an CRIS ELF reloc. */
518 1.1 skrll
519 1.1 skrll static void
520 1.1 skrll cris_info_to_howto_rela (abfd, cache_ptr, dst)
521 1.1 skrll bfd * abfd ATTRIBUTE_UNUSED;
522 1.1 skrll arelent * cache_ptr;
523 1.1 skrll Elf_Internal_Rela * dst;
524 1.1.1.2 christos {
525 1.1 skrll enum elf_cris_reloc_type r_type;
526 1.1 skrll
527 1.1 skrll r_type = ELF32_R_TYPE (dst->r_info);
528 1.1 skrll BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
529 1.1 skrll cache_ptr->howto = & cris_elf_howto_table [r_type];
530 1.1 skrll }
531 1.1 skrll
532 1.1 skrll bfd_reloc_status_type
533 1.1 skrll cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
534 1.1 skrll output_bfd, error_message)
535 1.1 skrll bfd *abfd ATTRIBUTE_UNUSED;
536 1.1 skrll arelent *reloc_entry;
537 1.1 skrll asymbol *symbol;
538 1.1 skrll PTR data ATTRIBUTE_UNUSED;
539 1.1 skrll asection *input_section;
540 1.1 skrll bfd *output_bfd;
541 1.1 skrll char **error_message ATTRIBUTE_UNUSED;
542 1.1 skrll {
543 1.1 skrll /* By default (using only bfd_elf_generic_reloc when linking to
544 1.1 skrll non-ELF formats) PC-relative relocs are relative to the beginning
545 1.1 skrll of the reloc. CRIS PC-relative relocs are relative to the position
546 1.1 skrll *after* the reloc because that's what pre-CRISv32 PC points to
547 1.1 skrll after reading an insn field with that reloc. (For CRISv32, PC is
548 1.1 skrll actually relative to the start of the insn, but we keep the old
549 1.1 skrll definition.) Still, we use as much generic machinery as we can.
550 1.1 skrll
551 1.1 skrll Only adjust when doing a final link. */
552 1.1 skrll if (output_bfd == (bfd *) NULL)
553 1.1 skrll reloc_entry->addend -= 1 << reloc_entry->howto->size;
554 1.1 skrll
555 1.1 skrll return
556 1.1 skrll bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
557 1.1 skrll input_section, output_bfd, error_message);
558 1.1 skrll }
559 1.1 skrll
560 1.1 skrll /* Support for core dump NOTE sections.
562 1.1 skrll The slightly unintuitive code layout is an attempt to keep at least
563 1.1 skrll some similarities with other ports, hoping to simplify general
564 1.1 skrll changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
565 1.1 skrll
566 1.1 skrll static bfd_boolean
567 1.1 skrll cris_elf_grok_prstatus (abfd, note)
568 1.1 skrll bfd *abfd;
569 1.1 skrll Elf_Internal_Note *note;
570 1.1 skrll {
571 1.1 skrll int offset;
572 1.1 skrll size_t size;
573 1.1 skrll
574 1.1 skrll if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
575 1.1 skrll switch (note->descsz)
576 1.1 skrll {
577 1.1 skrll default:
578 1.1 skrll return FALSE;
579 1.1 skrll
580 1.1 skrll case 202: /* Linux/CRISv32 */
581 1.1 skrll /* pr_cursig */
582 1.1 skrll elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
583 1.1.1.2 christos
584 1.1 skrll /* pr_pid */
585 1.1 skrll elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 22);
586 1.1 skrll
587 1.1 skrll /* pr_reg */
588 1.1 skrll offset = 70;
589 1.1 skrll size = 128;
590 1.1 skrll
591 1.1 skrll break;
592 1.1 skrll }
593 1.1 skrll else
594 1.1 skrll switch (note->descsz)
595 1.1 skrll {
596 1.1 skrll default:
597 1.1 skrll return FALSE;
598 1.1 skrll
599 1.1 skrll case 214: /* Linux/CRIS */
600 1.1 skrll /* pr_cursig */
601 1.1 skrll elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
602 1.1.1.2 christos
603 1.1 skrll /* pr_pid */
604 1.1 skrll elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 22);
605 1.1 skrll
606 1.1 skrll /* pr_reg */
607 1.1 skrll offset = 70;
608 1.1 skrll size = 140;
609 1.1 skrll
610 1.1 skrll break;
611 1.1 skrll }
612 1.1 skrll
613 1.1 skrll /* Make a ".reg/999" section. */
614 1.1 skrll return _bfd_elfcore_make_pseudosection (abfd, ".reg",
615 1.1 skrll size, note->descpos + offset);
616 1.1 skrll }
617 1.1 skrll
618 1.1 skrll static bfd_boolean
619 1.1 skrll cris_elf_grok_psinfo (abfd, note)
620 1.1 skrll bfd *abfd;
621 1.1 skrll Elf_Internal_Note *note;
622 1.1 skrll {
623 1.1 skrll if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
624 1.1 skrll switch (note->descsz)
625 1.1 skrll {
626 1.1 skrll default:
627 1.1 skrll return FALSE;
628 1.1 skrll
629 1.1 skrll case 124: /* Linux/CRISv32 elf_prpsinfo */
630 1.1 skrll elf_tdata (abfd)->core_program
631 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
632 1.1 skrll elf_tdata (abfd)->core_command
633 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
634 1.1 skrll }
635 1.1 skrll else
636 1.1 skrll switch (note->descsz)
637 1.1 skrll {
638 1.1 skrll default:
639 1.1 skrll return FALSE;
640 1.1 skrll
641 1.1 skrll case 124: /* Linux/CRIS elf_prpsinfo */
642 1.1 skrll elf_tdata (abfd)->core_program
643 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
644 1.1 skrll elf_tdata (abfd)->core_command
645 1.1 skrll = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
646 1.1 skrll }
647 1.1 skrll
648 1.1 skrll /* Note that for some reason, a spurious space is tacked
649 1.1 skrll onto the end of the args in some (at least one anyway)
650 1.1 skrll implementations, so strip it off if it exists. */
651 1.1 skrll
652 1.1 skrll {
653 1.1 skrll char *command = elf_tdata (abfd)->core_command;
654 1.1 skrll int n = strlen (command);
655 1.1 skrll
656 1.1 skrll if (0 < n && command[n - 1] == ' ')
657 1.1 skrll command[n - 1] = '\0';
658 1.1 skrll }
659 1.1 skrll
660 1.1 skrll return TRUE;
661 1.1 skrll }
662 1.1 skrll
663 1.1 skrll /* The name of the dynamic interpreter. This is put in the .interp
665 1.1 skrll section. */
666 1.1 skrll
667 1.1 skrll #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
668 1.1 skrll
669 1.1 skrll /* The size in bytes of an entry in the procedure linkage table. */
670 1.1 skrll
671 1.1 skrll #define PLT_ENTRY_SIZE 20
672 1.1 skrll #define PLT_ENTRY_SIZE_V32 26
673 1.1 skrll
674 1.1 skrll /* The first entry in an absolute procedure linkage table looks like this. */
675 1.1 skrll
676 1.1 skrll static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
677 1.1 skrll {
678 1.1 skrll 0xfc, 0xe1,
679 1.1 skrll 0x7e, 0x7e, /* push mof. */
680 1.1 skrll 0x7f, 0x0d, /* (dip [pc+]) */
681 1.1 skrll 0, 0, 0, 0, /* Replaced with address of .got + 4. */
682 1.1 skrll 0x30, 0x7a, /* move [...],mof */
683 1.1 skrll 0x7f, 0x0d, /* (dip [pc+]) */
684 1.1 skrll 0, 0, 0, 0, /* Replaced with address of .got + 8. */
685 1.1 skrll 0x30, 0x09 /* jump [...] */
686 1.1 skrll };
687 1.1 skrll
688 1.1 skrll static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
689 1.1 skrll {
690 1.1 skrll 0x84, 0xe2, /* subq 4,$sp */
691 1.1 skrll 0x6f, 0xfe, /* move.d 0,$acr */
692 1.1 skrll 0, 0, 0, 0, /* Replaced by address of .got + 4. */
693 1.1 skrll 0x7e, 0x7a, /* move $mof,[$sp] */
694 1.1 skrll 0x3f, 0x7a, /* move [$acr],$mof */
695 1.1 skrll 0x04, 0xf2, /* addq 4,acr */
696 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
697 1.1 skrll 0xbf, 0x09, /* jump $acr */
698 1.1 skrll 0xb0, 0x05, /* nop */
699 1.1 skrll 0, 0 /* Pad out to 26 bytes. */
700 1.1 skrll };
701 1.1 skrll
702 1.1 skrll /* Subsequent entries in an absolute procedure linkage table look like
703 1.1 skrll this. */
704 1.1 skrll
705 1.1 skrll static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
706 1.1 skrll {
707 1.1 skrll 0x7f, 0x0d, /* (dip [pc+]) */
708 1.1 skrll 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
709 1.1 skrll 0x30, 0x09, /* jump [...] */
710 1.1 skrll 0x3f, 0x7e, /* move [pc+],mof */
711 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
712 1.1 skrll 0x2f, 0xfe, /* add.d [pc+],pc */
713 1.1 skrll 0xec, 0xff,
714 1.1 skrll 0xff, 0xff /* Replaced with offset to start of .plt. */
715 1.1 skrll };
716 1.1 skrll
717 1.1 skrll static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
718 1.1 skrll {
719 1.1 skrll 0x6f, 0xfe, /* move.d 0,$acr */
720 1.1 skrll 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
721 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
722 1.1 skrll 0xbf, 0x09, /* jump $acr */
723 1.1 skrll 0xb0, 0x05, /* nop */
724 1.1 skrll 0x3f, 0x7e, /* move 0,mof */
725 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
726 1.1 skrll 0xbf, 0x0e, /* ba start_of_plt0_entry */
727 1.1 skrll 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
728 1.1 skrll 0xb0, 0x05 /* nop */
729 1.1 skrll };
730 1.1 skrll
731 1.1 skrll /* The first entry in a PIC procedure linkage table looks like this. */
732 1.1 skrll
733 1.1 skrll static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
734 1.1 skrll {
735 1.1 skrll 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
736 1.1 skrll 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
737 1.1 skrll 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
738 1.1 skrll 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
739 1.1 skrll };
740 1.1 skrll
741 1.1 skrll static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
742 1.1 skrll {
743 1.1 skrll 0x84, 0xe2, /* subq 4,$sp */
744 1.1 skrll 0x04, 0x01, /* addoq 4,$r0,$acr */
745 1.1 skrll 0x7e, 0x7a, /* move $mof,[$sp] */
746 1.1 skrll 0x3f, 0x7a, /* move [$acr],$mof */
747 1.1 skrll 0x04, 0xf2, /* addq 4,$acr */
748 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
749 1.1 skrll 0xbf, 0x09, /* jump $acr */
750 1.1 skrll 0xb0, 0x05, /* nop */
751 1.1 skrll 0, 0, /* Pad out to 26 bytes. */
752 1.1 skrll 0, 0, 0, 0,
753 1.1 skrll 0, 0, 0, 0
754 1.1 skrll };
755 1.1 skrll
756 1.1 skrll /* Subsequent entries in a PIC procedure linkage table look like this. */
757 1.1 skrll
758 1.1 skrll static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
759 1.1 skrll {
760 1.1 skrll 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
761 1.1 skrll 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
762 1.1 skrll 0x30, 0x09, /* jump [...] */
763 1.1 skrll 0x3f, 0x7e, /* move [pc+],mof */
764 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
765 1.1 skrll 0x2f, 0xfe, /* add.d [pc+],pc */
766 1.1 skrll 0xec, 0xff, /* Replaced with offset to start of .plt. */
767 1.1 skrll 0xff, 0xff
768 1.1 skrll };
769 1.1 skrll
770 1.1 skrll static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
771 1.1 skrll {
772 1.1 skrll 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
773 1.1 skrll 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
774 1.1 skrll 0x6f, 0xfa, /* move.d [$acr],$acr */
775 1.1 skrll 0xbf, 0x09, /* jump $acr */
776 1.1 skrll 0xb0, 0x05, /* nop */
777 1.1 skrll 0x3f, 0x7e, /* move relocoffs,$mof */
778 1.1 skrll 0, 0, 0, 0, /* Replaced with offset into relocation table. */
779 1.1 skrll 0xbf, 0x0e, /* ba start_of_plt */
780 1.1 skrll 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
781 1.1 skrll 0xb0, 0x05 /* nop */
782 1.1 skrll };
783 1.1 skrll
784 1.1 skrll /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
786 1.1 skrll (and most other PIC/shlib stuff). Check that we don't drift away
787 1.1 skrll without reason.
788 1.1 skrll
789 1.1 skrll The CRIS linker, like the m68k and i386 linkers (and probably the rest
790 1.1 skrll too) needs to keep track of the number of relocs that it decides to
791 1.1 skrll copy in check_relocs for each symbol. This is so that it can discard
792 1.1 skrll PC relative relocs if it doesn't need them when linking with
793 1.1 skrll -Bsymbolic. We store the information in a field extending the regular
794 1.1 skrll ELF linker hash table. */
795 1.1 skrll
796 1.1 skrll /* This structure keeps track of the number of PC relative relocs we have
797 1.1 skrll copied for a given symbol. */
798 1.1 skrll
799 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied
800 1.1 skrll {
801 1.1 skrll /* Next section. */
802 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *next;
803 1.1 skrll
804 1.1 skrll /* A section in dynobj. */
805 1.1.1.2 christos asection *section;
806 1.1.1.2 christos
807 1.1.1.2 christos /* Number of relocs copied in this section. */
808 1.1 skrll bfd_size_type count;
809 1.1 skrll
810 1.1 skrll /* Example of reloc being copied, for message. */
811 1.1 skrll enum elf_cris_reloc_type r_type;
812 1.1 skrll };
813 1.1 skrll
814 1.1 skrll /* CRIS ELF linker hash entry. */
815 1.1 skrll
816 1.1 skrll struct elf_cris_link_hash_entry
817 1.1 skrll {
818 1.1 skrll struct elf_link_hash_entry root;
819 1.1 skrll
820 1.1 skrll /* Number of PC relative relocs copied for this symbol. */
821 1.1 skrll struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
822 1.1 skrll
823 1.1 skrll /* The GOTPLT references are CRIS-specific; the goal is to avoid having
824 1.1 skrll both a general GOT and a PLT-specific GOT entry for the same symbol,
825 1.1 skrll when it is referenced both as a function and as a function pointer.
826 1.1 skrll
827 1.1 skrll Number of GOTPLT references for a function. */
828 1.1 skrll bfd_signed_vma gotplt_refcount;
829 1.1 skrll
830 1.1 skrll /* Actual GOTPLT index for this symbol, if applicable, or zero if not
831 1.1.1.2 christos (zero is never used as an index). FIXME: We should be able to fold
832 1.1.1.2 christos this with gotplt_refcount in a union, like the got and plt unions in
833 1.1.1.2 christos elf_link_hash_entry. */
834 1.1.1.2 christos bfd_size_type gotplt_offset;
835 1.1.1.2 christos
836 1.1.1.2 christos /* The root.got.refcount is the sum of the regular reference counts
837 1.1.1.2 christos (this) and those members below. We have to keep a separate count
838 1.1.1.2 christos to track when we've found the first (or last) reference to a
839 1.1.1.2 christos regular got entry. The offset is in root.got.offset. */
840 1.1.1.2 christos bfd_signed_vma reg_got_refcount;
841 1.1.1.2 christos
842 1.1.1.2 christos /* Similar to the above, the number of reloc references to this
843 1.1.1.2 christos symbols that need a R_CRIS_32_TPREL slot. The offset is in
844 1.1.1.2 christos root.got.offset, because this and .dtp_refcount can't validly
845 1.1.1.2 christos happen when there's also a regular GOT entry; that's invalid
846 1.1.1.2 christos input for which an error is emitted. */
847 1.1.1.2 christos bfd_signed_vma tprel_refcount;
848 1.1.1.2 christos
849 1.1 skrll /* Similar to the above, the number of reloc references to this
850 1.1 skrll symbols that need a R_CRIS_DTP slot. The offset is in
851 1.1.1.2 christos root.got.offset; plus 4 if .tprel_refcount > 0. */
852 1.1.1.2 christos bfd_signed_vma dtp_refcount;
853 1.1.1.2 christos };
854 1.1.1.2 christos
855 1.1.1.2 christos /* The local_got_refcounts and local_got_offsets are a multiple of
856 1.1.1.2 christos LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
857 1.1.1.2 christos refcount for GOT itself, see code), with the summary / group offset
858 1.1.1.2 christos for local symbols located at offset N, reference counts for
859 1.1.1.2 christos ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
860 1.1.1.2 christos relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
861 1.1.1.2 christos 3*LSNUM. */
862 1.1.1.2 christos
863 1.1.1.2 christos #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
864 1.1 skrll #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
865 1.1 skrll #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
866 1.1 skrll #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
867 1.1 skrll
868 1.1 skrll /* CRIS ELF linker hash table. */
869 1.1 skrll
870 1.1 skrll struct elf_cris_link_hash_table
871 1.1 skrll {
872 1.1 skrll struct elf_link_hash_table root;
873 1.1 skrll
874 1.1.1.2 christos /* We can't use the PLT offset and calculate to get the GOTPLT offset,
875 1.1.1.2 christos since we try and avoid creating GOTPLT:s when there's already a GOT.
876 1.1.1.2 christos Instead, we keep and update the next available index here. */
877 1.1.1.2 christos bfd_size_type next_gotplt_entry;
878 1.1.1.2 christos
879 1.1.1.2 christos /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
880 1.1.1.2 christos been seen for any input; if != 0, then the constant-offset
881 1.1 skrll R_CRIS_DTPMOD is needed for this DSO/executable. This turns
882 1.1 skrll negative at relocation, so that we don't need an extra flag for
883 1.1 skrll when the reloc is output. */
884 1.1 skrll bfd_signed_vma dtpmod_refcount;
885 1.1 skrll };
886 1.1 skrll
887 1.1 skrll /* Traverse a CRIS ELF linker hash table. */
888 1.1.1.2 christos
889 1.1 skrll #define elf_cris_link_hash_traverse(table, func, info) \
890 1.1 skrll (elf_link_hash_traverse \
891 1.1 skrll (&(table)->root, \
892 1.1 skrll (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
893 1.1 skrll (info)))
894 1.1.1.2 christos
895 1.1.1.2 christos /* Get the CRIS ELF linker hash table from a link_info structure. */
896 1.1.1.2 christos
897 1.1.1.2 christos #define elf_cris_hash_table(p) \
898 1.1.1.2 christos (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
899 1.1.1.2 christos == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
900 1.1.1.2 christos
901 1.1.1.2 christos /* Get the CRIS ELF linker hash entry from a regular hash entry (the
902 1.1.1.2 christos "parent class"). The .root reference is just a simple type
903 1.1 skrll check on the argument. */
904 1.1 skrll
905 1.1 skrll #define elf_cris_hash_entry(p) \
906 1.1 skrll ((struct elf_cris_link_hash_entry *) (&(p)->root))
907 1.1.1.2 christos
908 1.1.1.2 christos /* Create an entry in a CRIS ELF linker hash table. */
909 1.1.1.2 christos
910 1.1 skrll static struct bfd_hash_entry *
911 1.1 skrll elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
912 1.1 skrll struct bfd_hash_table *table,
913 1.1 skrll const char *string)
914 1.1 skrll {
915 1.1 skrll struct elf_cris_link_hash_entry *ret =
916 1.1 skrll (struct elf_cris_link_hash_entry *) entry;
917 1.1 skrll
918 1.1 skrll /* Allocate the structure if it has not already been allocated by a
919 1.1 skrll subclass. */
920 1.1 skrll if (ret == (struct elf_cris_link_hash_entry *) NULL)
921 1.1 skrll ret = ((struct elf_cris_link_hash_entry *)
922 1.1 skrll bfd_hash_allocate (table,
923 1.1 skrll sizeof (struct elf_cris_link_hash_entry)));
924 1.1 skrll if (ret == (struct elf_cris_link_hash_entry *) NULL)
925 1.1 skrll return (struct bfd_hash_entry *) ret;
926 1.1 skrll
927 1.1 skrll /* Call the allocation method of the superclass. */
928 1.1 skrll ret = ((struct elf_cris_link_hash_entry *)
929 1.1 skrll _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
930 1.1 skrll table, string));
931 1.1 skrll if (ret != (struct elf_cris_link_hash_entry *) NULL)
932 1.1.1.2 christos {
933 1.1.1.2 christos ret->pcrel_relocs_copied = NULL;
934 1.1.1.2 christos ret->gotplt_refcount = 0;
935 1.1 skrll ret->gotplt_offset = 0;
936 1.1 skrll ret->dtp_refcount = 0;
937 1.1 skrll ret->tprel_refcount = 0;
938 1.1 skrll ret->reg_got_refcount = 0;
939 1.1 skrll }
940 1.1 skrll
941 1.1 skrll return (struct bfd_hash_entry *) ret;
942 1.1 skrll }
943 1.1.1.2 christos
944 1.1 skrll /* Create a CRIS ELF linker hash table. */
945 1.1 skrll
946 1.1 skrll static struct bfd_link_hash_table *
947 1.1 skrll elf_cris_link_hash_table_create (bfd *abfd)
948 1.1 skrll {
949 1.1 skrll struct elf_cris_link_hash_table *ret;
950 1.1 skrll bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
951 1.1 skrll
952 1.1 skrll ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
953 1.1 skrll if (ret == (struct elf_cris_link_hash_table *) NULL)
954 1.1.1.2 christos return NULL;
955 1.1.1.2 christos
956 1.1 skrll if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
957 1.1 skrll elf_cris_link_hash_newfunc,
958 1.1 skrll sizeof (struct elf_cris_link_hash_entry),
959 1.1 skrll CRIS_ELF_DATA))
960 1.1 skrll {
961 1.1 skrll free (ret);
962 1.1 skrll return NULL;
963 1.1 skrll }
964 1.1 skrll
965 1.1.1.2 christos /* Initialize to skip over the first three entries in the gotplt; they
966 1.1.1.2 christos are used for run-time symbol evaluation. */
967 1.1.1.2 christos ret->next_gotplt_entry = 12;
968 1.1 skrll
969 1.1 skrll /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
970 1.1 skrll ret->dtpmod_refcount = 0;
971 1.1 skrll
972 1.1 skrll return &ret->root.root;
973 1.1 skrll }
974 1.1 skrll
975 1.1 skrll /* Perform a single relocation. By default we use the standard BFD
977 1.1 skrll routines, with a few tweaks. */
978 1.1 skrll
979 1.1 skrll static bfd_reloc_status_type
980 1.1 skrll cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
981 1.1 skrll relocation)
982 1.1 skrll reloc_howto_type * howto;
983 1.1 skrll bfd * input_bfd;
984 1.1 skrll asection * input_section;
985 1.1.1.2 christos bfd_byte * contents;
986 1.1 skrll Elf_Internal_Rela * rel;
987 1.1 skrll bfd_vma relocation;
988 1.1 skrll {
989 1.1 skrll bfd_reloc_status_type r;
990 1.1.1.2 christos enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
991 1.1 skrll
992 1.1 skrll /* PC-relative relocations are relative to the position *after*
993 1.1 skrll the reloc. Note that for R_CRIS_8_PCREL the adjustment is
994 1.1 skrll not a single byte, since PC must be 16-bit-aligned. */
995 1.1 skrll switch (r_type)
996 1.1 skrll {
997 1.1 skrll /* Check that the 16-bit GOT relocs are positive. */
998 1.1 skrll case R_CRIS_16_GOTPLT:
999 1.1 skrll case R_CRIS_16_GOT:
1000 1.1 skrll if ((bfd_signed_vma) relocation < 0)
1001 1.1 skrll return bfd_reloc_overflow;
1002 1.1 skrll break;
1003 1.1 skrll
1004 1.1 skrll case R_CRIS_32_PLT_PCREL:
1005 1.1 skrll case R_CRIS_32_PCREL:
1006 1.1 skrll relocation -= 2;
1007 1.1 skrll /* Fall through. */
1008 1.1 skrll case R_CRIS_8_PCREL:
1009 1.1 skrll case R_CRIS_16_PCREL:
1010 1.1 skrll relocation -= 2;
1011 1.1 skrll break;
1012 1.1 skrll
1013 1.1 skrll default:
1014 1.1 skrll break;
1015 1.1 skrll }
1016 1.1 skrll
1017 1.1 skrll r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1018 1.1.1.2 christos contents, rel->r_offset,
1019 1.1.1.2 christos relocation, rel->r_addend);
1020 1.1.1.2 christos return r;
1021 1.1.1.2 christos }
1022 1.1.1.2 christos
1023 1.1.1.2 christos
1025 1.1.1.2 christos /* The number of errors left before we stop outputting reloc-specific
1026 1.1 skrll explanatory messages. By coincidence, this works nicely together
1027 1.1 skrll with the default number of messages you'll get from LD about
1028 1.1 skrll "relocation truncated to fit" messages before you get an
1029 1.1 skrll "additional relocation overflows omitted from the output". */
1030 1.1.1.2 christos static int additional_relocation_error_msg_count = 10;
1031 1.1.1.2 christos
1032 1.1.1.2 christos /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1033 1.1.1.2 christos copied, for further comments. */
1034 1.1.1.2 christos
1035 1.1.1.2 christos static bfd_boolean
1036 1.1.1.2 christos cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
1037 1.1.1.2 christos struct bfd_link_info *info,
1038 1.1 skrll bfd *input_bfd,
1039 1.1.1.2 christos asection *input_section,
1040 1.1 skrll bfd_byte *contents,
1041 1.1 skrll Elf_Internal_Rela *relocs,
1042 1.1 skrll Elf_Internal_Sym *local_syms,
1043 1.1 skrll asection **local_sections)
1044 1.1 skrll {
1045 1.1 skrll struct elf_cris_link_hash_table * htab;
1046 1.1 skrll bfd *dynobj;
1047 1.1 skrll Elf_Internal_Shdr *symtab_hdr;
1048 1.1 skrll struct elf_link_hash_entry **sym_hashes;
1049 1.1.1.2 christos bfd_vma *local_got_offsets;
1050 1.1.1.2 christos asection *sgot;
1051 1.1.1.2 christos asection *splt;
1052 1.1.1.2 christos asection *sreloc;
1053 1.1.1.2 christos Elf_Internal_Rela *rel;
1054 1.1 skrll Elf_Internal_Rela *relend;
1055 1.1 skrll asection *srelgot;
1056 1.1 skrll
1057 1.1 skrll htab = elf_cris_hash_table (info);
1058 1.1 skrll if (htab == NULL)
1059 1.1 skrll return FALSE;
1060 1.1 skrll
1061 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
1062 1.1 skrll local_got_offsets = elf_local_got_offsets (input_bfd);
1063 1.1 skrll symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1064 1.1.1.2 christos sym_hashes = elf_sym_hashes (input_bfd);
1065 1.1 skrll relend = relocs + input_section->reloc_count;
1066 1.1 skrll
1067 1.1 skrll sgot = NULL;
1068 1.1 skrll splt = NULL;
1069 1.1 skrll sreloc = NULL;
1070 1.1 skrll srelgot = NULL;
1071 1.1 skrll
1072 1.1 skrll if (dynobj != NULL)
1073 1.1 skrll {
1074 1.1 skrll splt = bfd_get_section_by_name (dynobj, ".plt");
1075 1.1 skrll sgot = bfd_get_section_by_name (dynobj, ".got");
1076 1.1 skrll }
1077 1.1 skrll
1078 1.1 skrll for (rel = relocs; rel < relend; rel ++)
1079 1.1 skrll {
1080 1.1 skrll reloc_howto_type *howto;
1081 1.1 skrll unsigned long r_symndx;
1082 1.1.1.2 christos Elf_Internal_Sym *sym;
1083 1.1 skrll asection *sec;
1084 1.1 skrll struct elf_link_hash_entry *h;
1085 1.1 skrll bfd_vma relocation;
1086 1.1 skrll bfd_reloc_status_type r;
1087 1.1 skrll const char *symname = NULL;
1088 1.1 skrll enum elf_cris_reloc_type r_type;
1089 1.1 skrll
1090 1.1 skrll r_type = ELF32_R_TYPE (rel->r_info);
1091 1.1 skrll
1092 1.1 skrll if ( r_type == R_CRIS_GNU_VTINHERIT
1093 1.1 skrll || r_type == R_CRIS_GNU_VTENTRY)
1094 1.1 skrll continue;
1095 1.1 skrll
1096 1.1 skrll r_symndx = ELF32_R_SYM (rel->r_info);
1097 1.1 skrll howto = cris_elf_howto_table + r_type;
1098 1.1 skrll h = NULL;
1099 1.1 skrll sym = NULL;
1100 1.1 skrll sec = NULL;
1101 1.1 skrll
1102 1.1 skrll if (r_symndx < symtab_hdr->sh_info)
1103 1.1 skrll {
1104 1.1 skrll sym = local_syms + r_symndx;
1105 1.1 skrll sec = local_sections [r_symndx];
1106 1.1 skrll relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1107 1.1 skrll
1108 1.1 skrll symname = (bfd_elf_string_from_elf_section
1109 1.1 skrll (input_bfd, symtab_hdr->sh_link, sym->st_name));
1110 1.1 skrll if (symname == NULL)
1111 1.1 skrll symname = bfd_section_name (input_bfd, sec);
1112 1.1 skrll }
1113 1.1 skrll else
1114 1.1 skrll {
1115 1.1 skrll bfd_boolean warned;
1116 1.1 skrll bfd_boolean unresolved_reloc;
1117 1.1.1.2 christos
1118 1.1.1.2 christos RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1119 1.1 skrll r_symndx, symtab_hdr, sym_hashes,
1120 1.1 skrll h, sec, relocation,
1121 1.1 skrll unresolved_reloc, warned);
1122 1.1 skrll
1123 1.1 skrll symname = h->root.root.string;
1124 1.1 skrll
1125 1.1 skrll if (unresolved_reloc
1126 1.1 skrll /* Perhaps we should detect the cases that
1127 1.1 skrll sec->output_section is expected to be NULL like i386 and
1128 1.1 skrll m68k, but apparently (and according to elfxx-ia64.c) all
1129 1.1 skrll valid cases are where the symbol is defined in a shared
1130 1.1 skrll object which we link dynamically against. This includes
1131 1.1 skrll PLT relocs for which we've created a PLT entry and other
1132 1.1 skrll relocs for which we're prepared to create dynamic
1133 1.1 skrll relocations.
1134 1.1 skrll
1135 1.1 skrll For now, new situations cause us to just err when
1136 1.1 skrll sec->output_offset is NULL but the object with the symbol
1137 1.1 skrll is *not* dynamically linked against. Thus this will
1138 1.1 skrll automatically remind us so we can see if there are other
1139 1.1 skrll valid cases we need to revisit. */
1140 1.1 skrll && (sec->owner->flags & DYNAMIC) != 0)
1141 1.1 skrll relocation = 0;
1142 1.1 skrll
1143 1.1 skrll else if (h->root.type == bfd_link_hash_defined
1144 1.1 skrll || h->root.type == bfd_link_hash_defweak)
1145 1.1 skrll {
1146 1.1 skrll /* Here follow the cases where the relocation value must
1147 1.1 skrll be zero (or when further handling is simplified when
1148 1.1 skrll zero). I can't claim to understand the various
1149 1.1 skrll conditions and they weren't described in the files
1150 1.1 skrll where I copied them from (elf32-m68k.c and
1151 1.1 skrll elf32-i386.c), but let's mention examples of where
1152 1.1 skrll they happen. FIXME: Perhaps define and use a
1153 1.1 skrll dynamic_symbol_p function like ia64.
1154 1.1 skrll
1155 1.1 skrll - When creating a shared library, we can have an
1156 1.1 skrll ordinary relocation for a symbol defined in a shared
1157 1.1 skrll library (perhaps the one we create). We then make
1158 1.1 skrll the relocation value zero, as the value seen now will
1159 1.1 skrll be added into the relocation addend in this shared
1160 1.1 skrll library, but must be handled only at dynamic-link
1161 1.1 skrll time. FIXME: Not sure this example covers the
1162 1.1 skrll h->elf_link_hash_flags test, though it's there in
1163 1.1 skrll other targets. */
1164 1.1 skrll if (info->shared
1165 1.1 skrll && ((! info->symbolic && h->dynindx != -1)
1166 1.1 skrll || !h->def_regular)
1167 1.1 skrll && (input_section->flags & SEC_ALLOC) != 0
1168 1.1 skrll && (r_type == R_CRIS_8
1169 1.1 skrll || r_type == R_CRIS_16
1170 1.1 skrll || r_type == R_CRIS_32
1171 1.1 skrll || r_type == R_CRIS_8_PCREL
1172 1.1 skrll || r_type == R_CRIS_16_PCREL
1173 1.1 skrll || r_type == R_CRIS_32_PCREL))
1174 1.1 skrll relocation = 0;
1175 1.1 skrll else if (!info->relocatable && unresolved_reloc)
1176 1.1 skrll {
1177 1.1 skrll _bfd_error_handler
1178 1.1 skrll (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1179 1.1 skrll input_bfd,
1180 1.1 skrll input_section,
1181 1.1 skrll cris_elf_howto_table[r_type].name,
1182 1.1 skrll symname);
1183 1.1 skrll bfd_set_error (bfd_error_bad_value);
1184 1.1.1.2 christos return FALSE;
1185 1.1.1.2 christos }
1186 1.1 skrll }
1187 1.1 skrll }
1188 1.1 skrll
1189 1.1 skrll if (sec != NULL && elf_discarded_section (sec))
1190 1.1 skrll RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1191 1.1 skrll rel, relend, howto, contents);
1192 1.1 skrll
1193 1.1 skrll if (info->relocatable)
1194 1.1 skrll continue;
1195 1.1 skrll
1196 1.1 skrll switch (r_type)
1197 1.1 skrll {
1198 1.1 skrll case R_CRIS_16_GOTPLT:
1199 1.1 skrll case R_CRIS_32_GOTPLT:
1200 1.1 skrll /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1201 1.1 skrll but we require a PLT, and the PLT handling will take care of
1202 1.1 skrll filling in the PLT-specific GOT entry. For the GOT offset,
1203 1.1 skrll calculate it as we do when filling it in for the .got.plt
1204 1.1 skrll section. If we don't have a PLT, punt to GOT handling. */
1205 1.1 skrll if (h != NULL
1206 1.1 skrll && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1207 1.1 skrll {
1208 1.1 skrll asection *sgotplt
1209 1.1 skrll = bfd_get_section_by_name (dynobj, ".got.plt");
1210 1.1 skrll bfd_vma got_offset;
1211 1.1 skrll
1212 1.1 skrll BFD_ASSERT (h->dynindx != -1);
1213 1.1 skrll BFD_ASSERT (sgotplt != NULL);
1214 1.1 skrll
1215 1.1 skrll got_offset
1216 1.1 skrll = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1217 1.1 skrll
1218 1.1 skrll relocation = got_offset;
1219 1.1 skrll break;
1220 1.1 skrll }
1221 1.1 skrll
1222 1.1 skrll /* We didn't make a PLT entry for this symbol. Maybe everything is
1223 1.1 skrll folded into the GOT. Other than folding, this happens when
1224 1.1 skrll statically linking PIC code, or when using -Bsymbolic. Check
1225 1.1 skrll that we instead have a GOT entry as done for us by
1226 1.1 skrll elf_cris_adjust_dynamic_symbol, and drop through into the
1227 1.1 skrll ordinary GOT cases. This must not happen for the
1228 1.1 skrll executable, because any reference it does to a function
1229 1.1 skrll that is satisfied by a DSO must generate a PLT. We assume
1230 1.1 skrll these call-specific relocs don't address non-functions. */
1231 1.1 skrll if (h != NULL
1232 1.1 skrll && (h->got.offset == (bfd_vma) -1
1233 1.1 skrll || (!info->shared
1234 1.1 skrll && !(h->def_regular
1235 1.1 skrll || (!h->def_dynamic
1236 1.1 skrll && h->root.type == bfd_link_hash_undefweak)))))
1237 1.1 skrll {
1238 1.1 skrll (*_bfd_error_handler)
1239 1.1 skrll ((h->got.offset == (bfd_vma) -1)
1240 1.1 skrll ? _("%B, section %A: No PLT nor GOT for relocation %s"
1241 1.1 skrll " against symbol `%s'")
1242 1.1 skrll : _("%B, section %A: No PLT for relocation %s"
1243 1.1 skrll " against symbol `%s'"),
1244 1.1 skrll input_bfd,
1245 1.1 skrll input_section,
1246 1.1 skrll cris_elf_howto_table[r_type].name,
1247 1.1 skrll (symname != NULL && symname[0] != '\0'
1248 1.1 skrll ? symname : _("[whose name is lost]")));
1249 1.1 skrll
1250 1.1 skrll /* FIXME: Perhaps blaming input is not the right thing to
1251 1.1 skrll do; this is probably an internal error. But it is true
1252 1.1 skrll that we didn't like that particular input. */
1253 1.1 skrll bfd_set_error (bfd_error_bad_value);
1254 1.1 skrll return FALSE;
1255 1.1 skrll }
1256 1.1 skrll /* Fall through. */
1257 1.1 skrll
1258 1.1 skrll /* The size of the actual relocation is not used here; we only
1259 1.1 skrll fill in the GOT table here. */
1260 1.1 skrll case R_CRIS_16_GOT:
1261 1.1 skrll case R_CRIS_32_GOT:
1262 1.1 skrll {
1263 1.1 skrll bfd_vma off;
1264 1.1 skrll
1265 1.1 skrll /* Note that despite using RELA relocations, the .got contents
1266 1.1 skrll is always filled in with the link-relative relocation
1267 1.1 skrll value; the addend. */
1268 1.1 skrll
1269 1.1 skrll if (h != NULL)
1270 1.1 skrll {
1271 1.1 skrll off = h->got.offset;
1272 1.1 skrll BFD_ASSERT (off != (bfd_vma) -1);
1273 1.1 skrll
1274 1.1 skrll if (!elf_hash_table (info)->dynamic_sections_created
1275 1.1 skrll || (! info->shared
1276 1.1 skrll && (h->def_regular
1277 1.1 skrll || h->type == STT_FUNC
1278 1.1 skrll || h->needs_plt))
1279 1.1 skrll || (info->shared
1280 1.1 skrll && (info->symbolic || h->dynindx == -1)
1281 1.1 skrll && h->def_regular))
1282 1.1 skrll {
1283 1.1 skrll /* This wasn't checked above for ! info->shared, but
1284 1.1 skrll must hold there if we get here; the symbol must
1285 1.1 skrll be defined in the regular program or be undefweak
1286 1.1 skrll or be a function or otherwise need a PLT. */
1287 1.1 skrll BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1288 1.1 skrll || info->shared
1289 1.1 skrll || h->def_regular
1290 1.1 skrll || h->type == STT_FUNC
1291 1.1 skrll || h->needs_plt
1292 1.1 skrll || h->root.type == bfd_link_hash_undefweak);
1293 1.1 skrll
1294 1.1 skrll /* This is actually a static link, or it is a
1295 1.1 skrll -Bsymbolic link and the symbol is defined locally,
1296 1.1 skrll or is undefweak, or the symbol was forced to be
1297 1.1 skrll local because of a version file, or we're not
1298 1.1 skrll creating a dynamic object. We must initialize this
1299 1.1 skrll entry in the global offset table. Since the offset
1300 1.1 skrll must always be a multiple of 4, we use the least
1301 1.1 skrll significant bit to record whether we have
1302 1.1 skrll initialized it already.
1303 1.1 skrll
1304 1.1 skrll If this GOT entry should be runtime-initialized, we
1305 1.1 skrll will create a .rela.got relocation entry to
1306 1.1 skrll initialize the value. This is done in the
1307 1.1 skrll finish_dynamic_symbol routine. */
1308 1.1 skrll if ((off & 1) != 0)
1309 1.1 skrll off &= ~1;
1310 1.1 skrll else
1311 1.1 skrll {
1312 1.1 skrll bfd_put_32 (output_bfd, relocation,
1313 1.1 skrll sgot->contents + off);
1314 1.1 skrll h->got.offset |= 1;
1315 1.1 skrll }
1316 1.1 skrll }
1317 1.1 skrll }
1318 1.1 skrll else
1319 1.1 skrll {
1320 1.1 skrll BFD_ASSERT (local_got_offsets != NULL
1321 1.1 skrll && local_got_offsets[r_symndx] != (bfd_vma) -1);
1322 1.1 skrll
1323 1.1 skrll off = local_got_offsets[r_symndx];
1324 1.1 skrll
1325 1.1 skrll /* The offset must always be a multiple of 4. We use
1326 1.1 skrll the least significant bit to record whether we have
1327 1.1 skrll already generated the necessary reloc. */
1328 1.1 skrll if ((off & 1) != 0)
1329 1.1 skrll off &= ~1;
1330 1.1 skrll else
1331 1.1 skrll {
1332 1.1 skrll bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1333 1.1.1.2 christos
1334 1.1.1.2 christos if (info->shared)
1335 1.1.1.2 christos {
1336 1.1.1.2 christos Elf_Internal_Rela outrel;
1337 1.1 skrll bfd_byte *loc;
1338 1.1 skrll
1339 1.1 skrll if (srelgot == NULL)
1340 1.1 skrll srelgot
1341 1.1 skrll = bfd_get_section_by_name (dynobj, ".rela.got");
1342 1.1 skrll BFD_ASSERT (srelgot != NULL);
1343 1.1.1.2 christos
1344 1.1.1.2 christos outrel.r_offset = (sgot->output_section->vma
1345 1.1 skrll + sgot->output_offset
1346 1.1 skrll + off);
1347 1.1 skrll outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1348 1.1 skrll outrel.r_addend = relocation;
1349 1.1 skrll loc = srelgot->contents;
1350 1.1 skrll loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1351 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1352 1.1 skrll }
1353 1.1 skrll
1354 1.1 skrll local_got_offsets[r_symndx] |= 1;
1355 1.1 skrll }
1356 1.1 skrll }
1357 1.1 skrll
1358 1.1 skrll relocation = sgot->output_offset + off;
1359 1.1 skrll if (rel->r_addend != 0)
1360 1.1 skrll {
1361 1.1 skrll /* We can't do anything for a relocation which is against
1362 1.1 skrll a symbol *plus offset*. GOT holds relocations for
1363 1.1 skrll symbols. Make this an error; the compiler isn't
1364 1.1 skrll allowed to pass us these kinds of things. */
1365 1.1 skrll if (h == NULL)
1366 1.1 skrll (*_bfd_error_handler)
1367 1.1 skrll (_("%B, section %A: relocation %s with non-zero addend %d"
1368 1.1 skrll " against local symbol"),
1369 1.1 skrll input_bfd,
1370 1.1 skrll input_section,
1371 1.1 skrll cris_elf_howto_table[r_type].name,
1372 1.1 skrll rel->r_addend);
1373 1.1 skrll else
1374 1.1 skrll (*_bfd_error_handler)
1375 1.1 skrll (_("%B, section %A: relocation %s with non-zero addend %d"
1376 1.1 skrll " against symbol `%s'"),
1377 1.1 skrll input_bfd,
1378 1.1 skrll input_section,
1379 1.1 skrll cris_elf_howto_table[r_type].name,
1380 1.1 skrll rel->r_addend,
1381 1.1 skrll symname[0] != '\0' ? symname : _("[whose name is lost]"));
1382 1.1 skrll
1383 1.1 skrll bfd_set_error (bfd_error_bad_value);
1384 1.1 skrll return FALSE;
1385 1.1 skrll }
1386 1.1 skrll }
1387 1.1 skrll break;
1388 1.1 skrll
1389 1.1 skrll case R_CRIS_32_GOTREL:
1390 1.1 skrll /* This relocation must only be performed against local symbols.
1391 1.1 skrll It's also ok when we link a program and the symbol is either
1392 1.1 skrll defined in an ordinary (non-DSO) object or is undefined weak. */
1393 1.1 skrll if (h != NULL
1394 1.1 skrll && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1395 1.1 skrll && !(!info->shared
1396 1.1 skrll && (h->def_regular
1397 1.1 skrll || (!h->def_dynamic
1398 1.1 skrll && h->root.type == bfd_link_hash_undefweak))))
1399 1.1 skrll {
1400 1.1 skrll (*_bfd_error_handler)
1401 1.1 skrll (_("%B, section %A: relocation %s is"
1402 1.1 skrll " not allowed for global symbol: `%s'"),
1403 1.1 skrll input_bfd,
1404 1.1 skrll input_section,
1405 1.1 skrll cris_elf_howto_table[r_type].name,
1406 1.1 skrll symname);
1407 1.1 skrll bfd_set_error (bfd_error_bad_value);
1408 1.1 skrll return FALSE;
1409 1.1 skrll }
1410 1.1 skrll
1411 1.1 skrll /* This can happen if we get a link error with the input ELF
1412 1.1 skrll variant mismatching the output variant. Emit an error so
1413 1.1 skrll it's noticed if it happens elsewhere. */
1414 1.1 skrll if (sgot == NULL)
1415 1.1 skrll {
1416 1.1 skrll (*_bfd_error_handler)
1417 1.1 skrll (_("%B, section %A: relocation %s with no GOT created"),
1418 1.1 skrll input_bfd,
1419 1.1 skrll input_section,
1420 1.1 skrll cris_elf_howto_table[r_type].name);
1421 1.1 skrll bfd_set_error (bfd_error_bad_value);
1422 1.1 skrll return FALSE;
1423 1.1 skrll }
1424 1.1 skrll
1425 1.1 skrll /* This relocation is like a PC-relative one, except the
1426 1.1 skrll reference point is the location of GOT. Note that
1427 1.1 skrll sgot->output_offset is not involved in this calculation. We
1428 1.1 skrll always want the start of entire .got section, not the
1429 1.1 skrll position after the reserved header. */
1430 1.1 skrll relocation -= sgot->output_section->vma;
1431 1.1 skrll break;
1432 1.1 skrll
1433 1.1 skrll case R_CRIS_32_PLT_PCREL:
1434 1.1 skrll /* Relocation is to the entry for this symbol in the
1435 1.1 skrll procedure linkage table. */
1436 1.1 skrll
1437 1.1 skrll /* Resolve a PLT_PCREL reloc against a local symbol directly,
1438 1.1 skrll without using the procedure linkage table. */
1439 1.1 skrll if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1440 1.1 skrll break;
1441 1.1 skrll
1442 1.1 skrll if (h->plt.offset == (bfd_vma) -1
1443 1.1 skrll || splt == NULL)
1444 1.1 skrll {
1445 1.1 skrll /* We didn't make a PLT entry for this symbol. This
1446 1.1 skrll happens when statically linking PIC code, or when
1447 1.1 skrll using -Bsymbolic. */
1448 1.1 skrll break;
1449 1.1 skrll }
1450 1.1 skrll
1451 1.1 skrll relocation = (splt->output_section->vma
1452 1.1 skrll + splt->output_offset
1453 1.1 skrll + h->plt.offset);
1454 1.1 skrll break;
1455 1.1 skrll
1456 1.1 skrll case R_CRIS_32_PLT_GOTREL:
1457 1.1 skrll /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1458 1.1 skrll start of the .got section. See also comment at
1459 1.1 skrll R_CRIS_32_GOT. */
1460 1.1 skrll relocation -= sgot->output_section->vma;
1461 1.1 skrll
1462 1.1 skrll /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1463 1.1 skrll without using the procedure linkage table. */
1464 1.1 skrll if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1465 1.1 skrll break;
1466 1.1 skrll
1467 1.1 skrll if (h->plt.offset == (bfd_vma) -1
1468 1.1 skrll || splt == NULL)
1469 1.1 skrll {
1470 1.1 skrll /* We didn't make a PLT entry for this symbol. This
1471 1.1 skrll happens when statically linking PIC code, or when
1472 1.1 skrll using -Bsymbolic. */
1473 1.1 skrll break;
1474 1.1 skrll }
1475 1.1 skrll
1476 1.1 skrll relocation = (splt->output_section->vma
1477 1.1 skrll + splt->output_offset
1478 1.1 skrll + h->plt.offset
1479 1.1 skrll - sgot->output_section->vma);
1480 1.1.1.2 christos break;
1481 1.1.1.2 christos
1482 1.1 skrll case R_CRIS_8_PCREL:
1483 1.1 skrll case R_CRIS_16_PCREL:
1484 1.1 skrll case R_CRIS_32_PCREL:
1485 1.1 skrll /* If the symbol was local, we need no shlib-specific handling. */
1486 1.1 skrll if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1487 1.1 skrll || h->dynindx == -1)
1488 1.1 skrll break;
1489 1.1.1.2 christos
1490 1.1 skrll /* Fall through. */
1491 1.1 skrll case R_CRIS_8:
1492 1.1 skrll case R_CRIS_16:
1493 1.1 skrll case R_CRIS_32:
1494 1.1 skrll if (info->shared
1495 1.1.1.2 christos && r_symndx != STN_UNDEF
1496 1.1 skrll && (input_section->flags & SEC_ALLOC) != 0
1497 1.1 skrll && ((r_type != R_CRIS_8_PCREL
1498 1.1 skrll && r_type != R_CRIS_16_PCREL
1499 1.1 skrll && r_type != R_CRIS_32_PCREL)
1500 1.1 skrll || (!info->symbolic
1501 1.1 skrll || (h != NULL && !h->def_regular))))
1502 1.1 skrll {
1503 1.1 skrll Elf_Internal_Rela outrel;
1504 1.1 skrll bfd_byte *loc;
1505 1.1 skrll bfd_boolean skip, relocate;
1506 1.1 skrll
1507 1.1.1.2 christos /* When generating a shared object, these relocations
1508 1.1.1.2 christos are copied into the output file to be resolved at run
1509 1.1.1.2 christos time. */
1510 1.1.1.2 christos
1511 1.1 skrll if (sreloc == NULL)
1512 1.1 skrll {
1513 1.1 skrll sreloc = _bfd_elf_get_dynamic_reloc_section
1514 1.1 skrll (dynobj, input_section, /*rela?*/ TRUE);
1515 1.1 skrll /* The section should have been created in cris_elf_check_relocs,
1516 1.1 skrll but that function will not be called for objects which fail in
1517 1.1 skrll cris_elf_merge_private_bfd_data. */
1518 1.1 skrll if (sreloc == NULL)
1519 1.1 skrll {
1520 1.1 skrll bfd_set_error (bfd_error_bad_value);
1521 1.1 skrll return FALSE;
1522 1.1 skrll }
1523 1.1 skrll }
1524 1.1 skrll
1525 1.1 skrll skip = FALSE;
1526 1.1 skrll relocate = FALSE;
1527 1.1.1.2 christos
1528 1.1.1.2 christos outrel.r_offset =
1529 1.1.1.2 christos _bfd_elf_section_offset (output_bfd, info, input_section,
1530 1.1.1.2 christos rel->r_offset);
1531 1.1.1.2 christos if (outrel.r_offset == (bfd_vma) -1)
1532 1.1.1.2 christos skip = TRUE;
1533 1.1.1.2 christos else if (outrel.r_offset == (bfd_vma) -2
1534 1.1.1.2 christos /* For now, undefined weak symbols with non-default
1535 1.1.1.2 christos visibility (yielding 0), like exception info for
1536 1.1.1.2 christos discarded sections, will get a R_CRIS_NONE
1537 1.1 skrll relocation rather than no relocation, because we
1538 1.1 skrll notice too late that the symbol doesn't need a
1539 1.1 skrll relocation. */
1540 1.1 skrll || (h != NULL
1541 1.1 skrll && h->root.type == bfd_link_hash_undefweak
1542 1.1 skrll && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1543 1.1 skrll skip = TRUE, relocate = TRUE;
1544 1.1 skrll outrel.r_offset += (input_section->output_section->vma
1545 1.1 skrll + input_section->output_offset);
1546 1.1 skrll
1547 1.1 skrll if (skip)
1548 1.1 skrll memset (&outrel, 0, sizeof outrel);
1549 1.1 skrll /* h->dynindx may be -1 if the symbol was marked to
1550 1.1 skrll become local. */
1551 1.1 skrll else if (h != NULL
1552 1.1 skrll && ((! info->symbolic && h->dynindx != -1)
1553 1.1 skrll || !h->def_regular))
1554 1.1 skrll {
1555 1.1 skrll BFD_ASSERT (h->dynindx != -1);
1556 1.1 skrll outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1557 1.1 skrll outrel.r_addend = relocation + rel->r_addend;
1558 1.1 skrll }
1559 1.1 skrll else
1560 1.1 skrll {
1561 1.1 skrll outrel.r_addend = relocation + rel->r_addend;
1562 1.1 skrll
1563 1.1 skrll if (r_type == R_CRIS_32)
1564 1.1 skrll {
1565 1.1 skrll relocate = TRUE;
1566 1.1 skrll outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1567 1.1 skrll }
1568 1.1 skrll else
1569 1.1 skrll {
1570 1.1 skrll long indx;
1571 1.1 skrll
1572 1.1 skrll if (bfd_is_abs_section (sec))
1573 1.1 skrll indx = 0;
1574 1.1 skrll else if (sec == NULL || sec->owner == NULL)
1575 1.1 skrll {
1576 1.1 skrll bfd_set_error (bfd_error_bad_value);
1577 1.1 skrll return FALSE;
1578 1.1 skrll }
1579 1.1 skrll else
1580 1.1 skrll {
1581 1.1 skrll asection *osec;
1582 1.1 skrll
1583 1.1 skrll /* We are turning this relocation into one
1584 1.1 skrll against a section symbol. It would be
1585 1.1 skrll proper to subtract the symbol's value,
1586 1.1 skrll osec->vma, from the emitted reloc addend,
1587 1.1 skrll but ld.so expects buggy relocs. */
1588 1.1 skrll osec = sec->output_section;
1589 1.1 skrll indx = elf_section_data (osec)->dynindx;
1590 1.1 skrll if (indx == 0)
1591 1.1 skrll {
1592 1.1 skrll osec = htab->root.text_index_section;
1593 1.1 skrll indx = elf_section_data (osec)->dynindx;
1594 1.1 skrll }
1595 1.1 skrll BFD_ASSERT (indx != 0);
1596 1.1 skrll }
1597 1.1 skrll
1598 1.1 skrll outrel.r_info = ELF32_R_INFO (indx, r_type);
1599 1.1 skrll }
1600 1.1 skrll }
1601 1.1 skrll
1602 1.1 skrll loc = sreloc->contents;
1603 1.1 skrll loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1604 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1605 1.1 skrll
1606 1.1 skrll /* This reloc will be computed at runtime, so there's no
1607 1.1 skrll need to do anything now, except for R_CRIS_32 relocations
1608 1.1.1.2 christos that have been turned into R_CRIS_RELATIVE. */
1609 1.1.1.2 christos if (!relocate)
1610 1.1.1.2 christos continue;
1611 1.1.1.2 christos }
1612 1.1.1.2 christos
1613 1.1.1.2 christos break;
1614 1.1.1.2 christos
1615 1.1.1.2 christos case R_CRIS_16_DTPREL:
1616 1.1.1.2 christos case R_CRIS_32_DTPREL:
1617 1.1.1.2 christos /* This relocation must only be performed against local
1618 1.1.1.2 christos symbols, or to sections that are not loadable. It's also
1619 1.1.1.2 christos ok when we link a program and the symbol is defined in an
1620 1.1.1.2 christos ordinary (non-DSO) object (if it's undefined there, we've
1621 1.1.1.2 christos already seen an error). */
1622 1.1.1.2 christos if (h != NULL
1623 1.1.1.2 christos && (input_section->flags & SEC_ALLOC) != 0
1624 1.1.1.2 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1625 1.1.1.2 christos && (info->shared
1626 1.1.1.2 christos || (!h->def_regular
1627 1.1.1.2 christos && h->root.type != bfd_link_hash_undefined)))
1628 1.1.1.2 christos {
1629 1.1.1.2 christos (*_bfd_error_handler)
1630 1.1.1.2 christos ((h->root.type == bfd_link_hash_undefined)
1631 1.1.1.2 christos /* We shouldn't get here for GCC-emitted code. */
1632 1.1.1.2 christos ? _("%B, section %A: relocation %s has an undefined"
1633 1.1.1.2 christos " reference to `%s', perhaps a declaration mixup?")
1634 1.1.1.2 christos : ("%B, section %A: relocation %s is"
1635 1.1.1.2 christos " not allowed for `%s', a global symbol with default"
1636 1.1.1.2 christos " visibility, perhaps a declaration mixup?"),
1637 1.1.1.2 christos input_bfd,
1638 1.1.1.2 christos input_section,
1639 1.1.1.2 christos cris_elf_howto_table[r_type].name,
1640 1.1.1.2 christos symname != NULL && symname[0] != '\0'
1641 1.1.1.2 christos ? symname : _("[whose name is lost]"));
1642 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
1643 1.1.1.2 christos return FALSE;
1644 1.1.1.2 christos }
1645 1.1.1.2 christos
1646 1.1.1.2 christos BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1647 1.1.1.2 christos || htab->dtpmod_refcount != 0);
1648 1.1.1.2 christos
1649 1.1.1.2 christos /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1650 1.1.1.2 christos already done so. Note that we do this in .got.plt, not
1651 1.1.1.2 christos in .got, as .got.plt contains the first part, still the
1652 1.1.1.2 christos reloc is against .got, because the linker script directs
1653 1.1.1.2 christos (is required to direct) them both into .got. */
1654 1.1.1.2 christos if (htab->dtpmod_refcount > 0
1655 1.1.1.2 christos && (input_section->flags & SEC_ALLOC) != 0)
1656 1.1.1.2 christos {
1657 1.1.1.2 christos asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1658 1.1.1.2 christos BFD_ASSERT (sgotplt != NULL);
1659 1.1.1.2 christos
1660 1.1.1.2 christos if (info->shared)
1661 1.1.1.2 christos {
1662 1.1.1.2 christos Elf_Internal_Rela outrel;
1663 1.1.1.2 christos bfd_byte *loc;
1664 1.1.1.2 christos
1665 1.1.1.2 christos if (srelgot == NULL)
1666 1.1.1.2 christos srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1667 1.1.1.2 christos BFD_ASSERT (srelgot != NULL);
1668 1.1.1.2 christos loc = srelgot->contents;
1669 1.1.1.2 christos loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1670 1.1.1.2 christos
1671 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1672 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1673 1.1.1.2 christos outrel.r_offset = (sgotplt->output_section->vma
1674 1.1.1.2 christos + sgotplt->output_offset
1675 1.1.1.2 christos + 12);
1676 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1677 1.1.1.2 christos outrel.r_addend = 0;
1678 1.1.1.2 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1679 1.1.1.2 christos }
1680 1.1.1.2 christos else
1681 1.1.1.2 christos {
1682 1.1.1.2 christos /* For an executable, the GOT entry contents is known. */
1683 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1684 1.1.1.2 christos bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1685 1.1.1.2 christos }
1686 1.1.1.2 christos
1687 1.1.1.2 christos /* Reverse the sign to mark that we've emitted the
1688 1.1.1.2 christos required GOT entry. */
1689 1.1.1.2 christos htab->dtpmod_refcount = - htab->dtpmod_refcount;
1690 1.1.1.2 christos }
1691 1.1.1.2 christos
1692 1.1.1.2 christos /* The relocation is the offset from the start of the module
1693 1.1.1.2 christos TLS block to the (local) symbol. */
1694 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
1695 1.1.1.2 christos ? 0 : elf_hash_table (info)->tls_sec->vma;
1696 1.1.1.2 christos break;
1697 1.1.1.2 christos
1698 1.1.1.2 christos case R_CRIS_32_GD:
1699 1.1.1.2 christos if (info->shared)
1700 1.1.1.2 christos {
1701 1.1.1.2 christos bfd_set_error (bfd_error_invalid_operation);
1702 1.1.1.2 christos
1703 1.1.1.2 christos /* We've already informed in cris_elf_check_relocs that
1704 1.1.1.2 christos this is an error. */
1705 1.1.1.2 christos return FALSE;
1706 1.1.1.2 christos }
1707 1.1.1.2 christos /* Fall through. */
1708 1.1.1.2 christos
1709 1.1.1.2 christos case R_CRIS_16_GOT_GD:
1710 1.1.1.2 christos case R_CRIS_32_GOT_GD:
1711 1.1.1.2 christos if (rel->r_addend != 0)
1712 1.1.1.2 christos {
1713 1.1.1.2 christos /* We can't do anything for a relocation which is against a
1714 1.1.1.2 christos symbol *plus offset*. The GOT holds relocations for
1715 1.1.1.2 christos symbols. Make this an error; the compiler isn't allowed
1716 1.1.1.2 christos to pass us these kinds of things. */
1717 1.1.1.2 christos (*_bfd_error_handler)
1718 1.1.1.2 christos (_("%B, section %A: relocation %s with non-zero addend %d"
1719 1.1.1.2 christos " against symbol `%s'"),
1720 1.1.1.2 christos input_bfd,
1721 1.1.1.2 christos input_section,
1722 1.1.1.2 christos cris_elf_howto_table[r_type].name,
1723 1.1.1.2 christos rel->r_addend,
1724 1.1.1.2 christos symname[0] != '\0' ? symname : _("[whose name is lost]"));
1725 1.1.1.2 christos
1726 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
1727 1.1.1.2 christos return FALSE;
1728 1.1.1.2 christos }
1729 1.1.1.2 christos
1730 1.1.1.2 christos if (!info->shared
1731 1.1.1.2 christos && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1732 1.1.1.2 christos {
1733 1.1.1.2 christos /* Known contents of the GOT. */
1734 1.1.1.2 christos bfd_vma off;
1735 1.1.1.2 christos
1736 1.1.1.2 christos /* The symbol is defined in the program, so just write
1737 1.1.1.2 christos (1, known_tpoffset) into the GOT. */
1738 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec->vma;
1739 1.1.1.2 christos
1740 1.1.1.2 christos if (h != NULL)
1741 1.1.1.2 christos {
1742 1.1.1.2 christos off = elf_cris_hash_entry (h)->tprel_refcount > 0
1743 1.1.1.2 christos ? h->got.offset + 4 : h->got.offset;
1744 1.1.1.2 christos }
1745 1.1.1.2 christos else
1746 1.1.1.2 christos {
1747 1.1.1.2 christos off = local_got_offsets[r_symndx];
1748 1.1.1.2 christos if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1749 1.1.1.2 christos off += 4;
1750 1.1.1.2 christos }
1751 1.1.1.2 christos
1752 1.1.1.2 christos /* We use bit 1 of the offset as a flag for GOT entry with
1753 1.1.1.2 christos the R_CRIS_DTP reloc, setting it when we've emitted the
1754 1.1.1.2 christos GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1755 1.1.1.2 christos relocs. */
1756 1.1.1.2 christos if ((off & 2) == 0)
1757 1.1.1.2 christos {
1758 1.1.1.2 christos off &= ~3;
1759 1.1.1.2 christos
1760 1.1.1.2 christos if (h != NULL)
1761 1.1.1.2 christos h->got.offset |= 2;
1762 1.1.1.2 christos else
1763 1.1.1.2 christos local_got_offsets[r_symndx] |= 2;
1764 1.1.1.2 christos
1765 1.1.1.2 christos bfd_put_32 (output_bfd, 1, sgot->contents + off);
1766 1.1.1.2 christos bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1767 1.1.1.2 christos }
1768 1.1.1.2 christos else
1769 1.1.1.2 christos off &= ~3;
1770 1.1.1.2 christos
1771 1.1.1.2 christos relocation = sgot->output_offset + off
1772 1.1.1.2 christos + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1773 1.1.1.2 christos }
1774 1.1.1.2 christos else
1775 1.1.1.2 christos {
1776 1.1.1.2 christos /* Not all parts of the GOT entry are known; emit a real
1777 1.1.1.2 christos relocation. */
1778 1.1.1.2 christos bfd_vma off;
1779 1.1.1.2 christos
1780 1.1.1.2 christos if (h != NULL)
1781 1.1.1.2 christos off = elf_cris_hash_entry (h)->tprel_refcount > 0
1782 1.1.1.2 christos ? h->got.offset + 4 : h->got.offset;
1783 1.1.1.2 christos else
1784 1.1.1.2 christos {
1785 1.1.1.2 christos off = local_got_offsets[r_symndx];
1786 1.1.1.2 christos if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1787 1.1.1.2 christos off += 4;
1788 1.1.1.2 christos }
1789 1.1.1.2 christos
1790 1.1.1.2 christos /* See above re bit 1 and bit 0 usage. */
1791 1.1.1.2 christos if ((off & 2) == 0)
1792 1.1.1.2 christos {
1793 1.1.1.2 christos Elf_Internal_Rela outrel;
1794 1.1.1.2 christos bfd_byte *loc;
1795 1.1.1.2 christos
1796 1.1.1.2 christos off &= ~3;
1797 1.1.1.2 christos
1798 1.1.1.2 christos if (h != NULL)
1799 1.1.1.2 christos h->got.offset |= 2;
1800 1.1.1.2 christos else
1801 1.1.1.2 christos local_got_offsets[r_symndx] |= 2;
1802 1.1.1.2 christos
1803 1.1.1.2 christos /* Clear the target contents of the GOT (just as a
1804 1.1.1.2 christos gesture; it's already cleared on allocation): this
1805 1.1.1.2 christos relocation is not like the other dynrelocs. */
1806 1.1.1.2 christos bfd_put_32 (output_bfd, 0, sgot->contents + off);
1807 1.1.1.2 christos bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1808 1.1.1.2 christos
1809 1.1.1.2 christos if (srelgot == NULL)
1810 1.1.1.2 christos srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1811 1.1.1.2 christos BFD_ASSERT (srelgot != NULL);
1812 1.1.1.2 christos
1813 1.1.1.2 christos if (h != NULL && h->dynindx != -1)
1814 1.1.1.2 christos {
1815 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1816 1.1.1.2 christos relocation = 0;
1817 1.1.1.2 christos }
1818 1.1.1.2 christos else
1819 1.1.1.2 christos {
1820 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1821 1.1.1.2 christos
1822 1.1.1.2 christos /* NULL if we had an error. */
1823 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
1824 1.1.1.2 christos ? 0 : elf_hash_table (info)->tls_sec->vma;
1825 1.1.1.2 christos }
1826 1.1.1.2 christos
1827 1.1.1.2 christos outrel.r_offset = (sgot->output_section->vma
1828 1.1.1.2 christos + sgot->output_offset
1829 1.1.1.2 christos + off);
1830 1.1.1.2 christos outrel.r_addend = relocation;
1831 1.1.1.2 christos loc = srelgot->contents;
1832 1.1.1.2 christos loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1833 1.1.1.2 christos
1834 1.1.1.2 christos /* NULL if we had an error. */
1835 1.1.1.2 christos if (srelgot->contents != NULL)
1836 1.1.1.2 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1837 1.1.1.2 christos }
1838 1.1.1.2 christos else
1839 1.1.1.2 christos off &= ~3;
1840 1.1.1.2 christos
1841 1.1.1.2 christos relocation = sgot->output_offset + off
1842 1.1.1.2 christos + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1843 1.1.1.2 christos }
1844 1.1.1.2 christos
1845 1.1.1.2 christos /* The GOT-relative offset to the GOT entry is the
1846 1.1.1.2 christos relocation, or for R_CRIS_32_GD, the actual address of
1847 1.1.1.2 christos the GOT entry. */
1848 1.1.1.2 christos break;
1849 1.1.1.2 christos
1850 1.1.1.2 christos case R_CRIS_32_IE:
1851 1.1.1.2 christos if (info->shared)
1852 1.1.1.2 christos {
1853 1.1.1.2 christos bfd_set_error (bfd_error_invalid_operation);
1854 1.1.1.2 christos
1855 1.1.1.2 christos /* We've already informed in cris_elf_check_relocs that
1856 1.1.1.2 christos this is an error. */
1857 1.1.1.2 christos return FALSE;
1858 1.1.1.2 christos }
1859 1.1.1.2 christos /* Fall through. */
1860 1.1.1.2 christos
1861 1.1.1.2 christos case R_CRIS_32_GOT_TPREL:
1862 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
1863 1.1.1.2 christos if (rel->r_addend != 0)
1864 1.1.1.2 christos {
1865 1.1.1.2 christos /* We can't do anything for a relocation which is
1866 1.1.1.2 christos against a symbol *plus offset*. GOT holds
1867 1.1.1.2 christos relocations for symbols. Make this an error; the
1868 1.1.1.2 christos compiler isn't allowed to pass us these kinds of
1869 1.1.1.2 christos things. */
1870 1.1.1.2 christos (*_bfd_error_handler)
1871 1.1.1.2 christos (_("%B, section %A: relocation %s with non-zero addend %d"
1872 1.1.1.2 christos " against symbol `%s'"),
1873 1.1.1.2 christos input_bfd,
1874 1.1.1.2 christos input_section,
1875 1.1.1.2 christos cris_elf_howto_table[r_type].name,
1876 1.1.1.2 christos rel->r_addend,
1877 1.1.1.2 christos symname[0] != '\0' ? symname : _("[whose name is lost]"));
1878 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
1879 1.1.1.2 christos return FALSE;
1880 1.1.1.2 christos }
1881 1.1.1.2 christos
1882 1.1.1.2 christos if (!info->shared && (h == NULL || h->def_regular))
1883 1.1.1.2 christos {
1884 1.1.1.2 christos /* Known contents of the GOT. */
1885 1.1.1.2 christos bfd_vma off;
1886 1.1.1.2 christos
1887 1.1.1.2 christos /* The symbol is defined in the program, so just write
1888 1.1.1.2 christos the -prog_tls_size+known_tpoffset into the GOT. */
1889 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec->vma;
1890 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_size;
1891 1.1.1.2 christos
1892 1.1.1.2 christos if (h != NULL)
1893 1.1.1.2 christos off = h->got.offset;
1894 1.1.1.2 christos else
1895 1.1.1.2 christos off = local_got_offsets[r_symndx];
1896 1.1.1.2 christos
1897 1.1.1.2 christos /* Bit 0 is used to mark whether we've emitted the required
1898 1.1.1.2 christos entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1899 1.1.1.2 christos is used similarly for R_CRIS_DTP, see above. */
1900 1.1.1.2 christos if ((off & 1) == 0)
1901 1.1.1.2 christos {
1902 1.1.1.2 christos off &= ~3;
1903 1.1.1.2 christos
1904 1.1.1.2 christos if (h != NULL)
1905 1.1.1.2 christos h->got.offset |= 1;
1906 1.1.1.2 christos else
1907 1.1.1.2 christos local_got_offsets[r_symndx] |= 1;
1908 1.1.1.2 christos
1909 1.1.1.2 christos bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1910 1.1.1.2 christos }
1911 1.1.1.2 christos else
1912 1.1.1.2 christos off &= ~3;
1913 1.1.1.2 christos
1914 1.1.1.2 christos relocation = sgot->output_offset + off
1915 1.1.1.2 christos + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1916 1.1.1.2 christos }
1917 1.1.1.2 christos else
1918 1.1.1.2 christos {
1919 1.1.1.2 christos /* Emit a real relocation. */
1920 1.1.1.2 christos bfd_vma off;
1921 1.1.1.2 christos
1922 1.1.1.2 christos if (h != NULL)
1923 1.1.1.2 christos off = h->got.offset;
1924 1.1.1.2 christos else
1925 1.1.1.2 christos off = local_got_offsets[r_symndx];
1926 1.1.1.2 christos
1927 1.1.1.2 christos /* See above re usage of bit 0 and 1. */
1928 1.1.1.2 christos if ((off & 1) == 0)
1929 1.1.1.2 christos {
1930 1.1.1.2 christos Elf_Internal_Rela outrel;
1931 1.1.1.2 christos bfd_byte *loc;
1932 1.1.1.2 christos
1933 1.1.1.2 christos off &= ~3;
1934 1.1.1.2 christos
1935 1.1.1.2 christos if (h != NULL)
1936 1.1.1.2 christos h->got.offset |= 1;
1937 1.1.1.2 christos else
1938 1.1.1.2 christos local_got_offsets[r_symndx] |= 1;
1939 1.1.1.2 christos
1940 1.1.1.2 christos if (srelgot == NULL)
1941 1.1.1.2 christos srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1942 1.1.1.2 christos BFD_ASSERT (srelgot != NULL);
1943 1.1.1.2 christos
1944 1.1.1.2 christos if (h != NULL && h->dynindx != -1)
1945 1.1.1.2 christos {
1946 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1947 1.1.1.2 christos relocation = 0;
1948 1.1.1.2 christos }
1949 1.1.1.2 christos else
1950 1.1.1.2 christos {
1951 1.1.1.2 christos outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1952 1.1.1.2 christos
1953 1.1.1.2 christos /* NULL if we had an error. */
1954 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
1955 1.1.1.2 christos ? 0 : elf_hash_table (info)->tls_sec->vma;
1956 1.1.1.2 christos }
1957 1.1.1.2 christos
1958 1.1.1.2 christos /* Just "define" the initial contents in some
1959 1.1.1.2 christos semi-logical way. */
1960 1.1.1.2 christos bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1961 1.1.1.2 christos
1962 1.1.1.2 christos outrel.r_offset = (sgot->output_section->vma
1963 1.1.1.2 christos + sgot->output_offset
1964 1.1.1.2 christos + off);
1965 1.1.1.2 christos outrel.r_addend = relocation;
1966 1.1.1.2 christos loc = srelgot->contents;
1967 1.1.1.2 christos loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1968 1.1.1.2 christos /* NULL if we had an error. */
1969 1.1.1.2 christos if (srelgot->contents != NULL)
1970 1.1.1.2 christos bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1971 1.1.1.2 christos }
1972 1.1.1.2 christos else
1973 1.1.1.2 christos off &= ~3;
1974 1.1.1.2 christos
1975 1.1.1.2 christos relocation = sgot->output_offset + off
1976 1.1.1.2 christos + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1977 1.1.1.2 christos }
1978 1.1.1.2 christos
1979 1.1.1.2 christos /* The GOT-relative offset to the GOT entry is the relocation,
1980 1.1.1.2 christos or for R_CRIS_32_GD, the actual address of the GOT entry. */
1981 1.1.1.2 christos break;
1982 1.1.1.2 christos
1983 1.1.1.2 christos case R_CRIS_16_TPREL:
1984 1.1.1.2 christos case R_CRIS_32_TPREL:
1985 1.1.1.2 christos /* This relocation must only be performed against symbols
1986 1.1.1.2 christos defined in an ordinary (non-DSO) object. */
1987 1.1.1.2 christos if (info->shared)
1988 1.1.1.2 christos {
1989 1.1.1.2 christos bfd_set_error (bfd_error_invalid_operation);
1990 1.1.1.2 christos
1991 1.1.1.2 christos /* We've already informed in cris_elf_check_relocs that
1992 1.1.1.2 christos this is an error. */
1993 1.1.1.2 christos return FALSE;
1994 1.1.1.2 christos }
1995 1.1.1.2 christos
1996 1.1.1.2 christos if (h != NULL
1997 1.1.1.2 christos && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1998 1.1.1.2 christos && !(h->def_regular || ELF_COMMON_DEF_P (h))
1999 1.1.1.2 christos /* If it's undefined, then an error message has already
2000 1.1.1.2 christos been emitted. */
2001 1.1.1.2 christos && h->root.type != bfd_link_hash_undefined)
2002 1.1.1.2 christos {
2003 1.1.1.2 christos (*_bfd_error_handler)
2004 1.1.1.2 christos (_("%B, section %A: relocation %s is"
2005 1.1.1.2 christos " not allowed for symbol: `%s'"
2006 1.1.1.2 christos " which is defined outside the program,"
2007 1.1.1.2 christos " perhaps a declaration mixup?"),
2008 1.1.1.2 christos input_bfd,
2009 1.1.1.2 christos input_section,
2010 1.1.1.2 christos cris_elf_howto_table[r_type].name,
2011 1.1.1.2 christos symname);
2012 1.1.1.2 christos bfd_set_error (bfd_error_bad_value);
2013 1.1.1.2 christos return FALSE;
2014 1.1.1.2 christos }
2015 1.1.1.2 christos
2016 1.1.1.2 christos /* NULL if we had an error. */
2017 1.1.1.2 christos relocation -= elf_hash_table (info)->tls_sec == NULL
2018 1.1.1.2 christos ? 0
2019 1.1.1.2 christos : (elf_hash_table (info)->tls_sec->vma
2020 1.1.1.2 christos + elf_hash_table (info)->tls_size);
2021 1.1.1.2 christos
2022 1.1 skrll /* The TLS-relative offset is the relocation. */
2023 1.1 skrll break;
2024 1.1 skrll
2025 1.1 skrll default:
2026 1.1 skrll BFD_FAIL ();
2027 1.1 skrll return FALSE;
2028 1.1 skrll }
2029 1.1 skrll
2030 1.1 skrll r = cris_final_link_relocate (howto, input_bfd, input_section,
2031 1.1 skrll contents, rel, relocation);
2032 1.1 skrll
2033 1.1 skrll if (r != bfd_reloc_ok)
2034 1.1 skrll {
2035 1.1 skrll const char * msg = (const char *) NULL;
2036 1.1 skrll
2037 1.1.1.2 christos switch (r)
2038 1.1.1.2 christos {
2039 1.1.1.2 christos case bfd_reloc_overflow:
2040 1.1.1.2 christos r = info->callbacks->reloc_overflow
2041 1.1.1.2 christos (info, (h ? &h->root : NULL), symname, howto->name,
2042 1.1.1.2 christos (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2043 1.1.1.2 christos if (additional_relocation_error_msg_count > 0)
2044 1.1.1.2 christos {
2045 1.1.1.2 christos additional_relocation_error_msg_count--;
2046 1.1.1.2 christos switch (r_type)
2047 1.1.1.2 christos {
2048 1.1.1.2 christos case R_CRIS_16_GOTPLT:
2049 1.1.1.2 christos case R_CRIS_16_GOT:
2050 1.1.1.2 christos
2051 1.1.1.2 christos /* Not just TLS is involved here, so we make
2052 1.1.1.2 christos generation and message depend on -fPIC/-fpic
2053 1.1.1.2 christos only. */
2054 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
2055 1.1.1.2 christos case R_CRIS_16_GOT_GD:
2056 1.1.1.2 christos (*_bfd_error_handler)
2057 1.1.1.2 christos (_("(too many global variables for -fpic:"
2058 1.1.1.2 christos " recompile with -fPIC)"));
2059 1.1.1.2 christos break;
2060 1.1.1.2 christos
2061 1.1.1.2 christos case R_CRIS_16_TPREL:
2062 1.1.1.2 christos case R_CRIS_16_DTPREL:
2063 1.1.1.2 christos (*_bfd_error_handler)
2064 1.1.1.2 christos (_("(thread-local data too big for -fpic or"
2065 1.1.1.2 christos " -msmall-tls: recompile with -fPIC or"
2066 1.1.1.2 christos " -mno-small-tls)"));
2067 1.1.1.2 christos break;
2068 1.1 skrll
2069 1.1 skrll /* No known cause for overflow for other relocs. */
2070 1.1 skrll default:
2071 1.1 skrll break;
2072 1.1 skrll }
2073 1.1 skrll }
2074 1.1 skrll break;
2075 1.1 skrll
2076 1.1 skrll case bfd_reloc_undefined:
2077 1.1 skrll r = info->callbacks->undefined_symbol
2078 1.1 skrll (info, symname, input_bfd, input_section, rel->r_offset,
2079 1.1 skrll TRUE);
2080 1.1 skrll break;
2081 1.1 skrll
2082 1.1 skrll case bfd_reloc_outofrange:
2083 1.1 skrll msg = _("internal error: out of range error");
2084 1.1 skrll break;
2085 1.1 skrll
2086 1.1 skrll case bfd_reloc_notsupported:
2087 1.1 skrll msg = _("internal error: unsupported relocation error");
2088 1.1 skrll break;
2089 1.1 skrll
2090 1.1 skrll case bfd_reloc_dangerous:
2091 1.1 skrll msg = _("internal error: dangerous relocation");
2092 1.1 skrll break;
2093 1.1 skrll
2094 1.1 skrll default:
2095 1.1 skrll msg = _("internal error: unknown error");
2096 1.1 skrll break;
2097 1.1 skrll }
2098 1.1 skrll
2099 1.1 skrll if (msg)
2100 1.1 skrll r = info->callbacks->warning
2101 1.1 skrll (info, msg, symname, input_bfd, input_section, rel->r_offset);
2102 1.1 skrll
2103 1.1 skrll if (! r)
2104 1.1 skrll return FALSE;
2105 1.1 skrll }
2106 1.1 skrll }
2107 1.1 skrll
2108 1.1 skrll return TRUE;
2109 1.1.1.2 christos }
2110 1.1.1.2 christos
2111 1.1.1.2 christos /* Finish up dynamic symbol handling. We set the contents of various
2113 1.1 skrll dynamic sections here. */
2114 1.1.1.2 christos
2115 1.1 skrll static bfd_boolean
2116 1.1 skrll elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2117 1.1 skrll struct bfd_link_info *info,
2118 1.1 skrll struct elf_link_hash_entry *h,
2119 1.1 skrll Elf_Internal_Sym *sym)
2120 1.1 skrll {
2121 1.1 skrll struct elf_cris_link_hash_table * htab;
2122 1.1 skrll bfd *dynobj;
2123 1.1 skrll
2124 1.1 skrll /* Where in the plt entry to put values. */
2125 1.1 skrll int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2126 1.1 skrll
2127 1.1 skrll /* What offset to add to the distance to the first PLT entry for the
2128 1.1 skrll value at plt_off3. */
2129 1.1 skrll int plt_off3_value_bias = 4;
2130 1.1 skrll
2131 1.1.1.2 christos /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2132 1.1.1.2 christos for PIC and non-PIC for v32 and pre-v32). */
2133 1.1.1.2 christos int plt_stub_offset = 8;
2134 1.1.1.2 christos int plt_entry_size = PLT_ENTRY_SIZE;
2135 1.1 skrll const bfd_byte *plt_entry = elf_cris_plt_entry;
2136 1.1 skrll const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2137 1.1 skrll
2138 1.1 skrll htab = elf_cris_hash_table (info);
2139 1.1 skrll if (htab == NULL)
2140 1.1 skrll return FALSE;
2141 1.1 skrll
2142 1.1 skrll /* Adjust the various PLT entry offsets. */
2143 1.1 skrll if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2144 1.1 skrll {
2145 1.1 skrll plt_off2 = 14;
2146 1.1 skrll plt_off3 = 20;
2147 1.1 skrll plt_off3_value_bias = -2;
2148 1.1 skrll plt_stub_offset = 12;
2149 1.1 skrll plt_entry_size = PLT_ENTRY_SIZE_V32;
2150 1.1 skrll plt_entry = elf_cris_plt_entry_v32;
2151 1.1 skrll plt_pic_entry = elf_cris_pic_plt_entry_v32;
2152 1.1 skrll }
2153 1.1 skrll
2154 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
2155 1.1 skrll
2156 1.1 skrll if (h->plt.offset != (bfd_vma) -1)
2157 1.1.1.2 christos {
2158 1.1 skrll asection *splt;
2159 1.1 skrll asection *sgotplt;
2160 1.1 skrll asection *srela;
2161 1.1 skrll bfd_vma got_base;
2162 1.1.1.2 christos
2163 1.1.1.2 christos bfd_vma gotplt_offset
2164 1.1.1.2 christos = elf_cris_hash_entry (h)->gotplt_offset;
2165 1.1.1.2 christos Elf_Internal_Rela rela;
2166 1.1.1.2 christos bfd_byte *loc;
2167 1.1.1.2 christos bfd_boolean has_gotplt = gotplt_offset != 0;
2168 1.1.1.2 christos
2169 1.1.1.2 christos /* Get the index in the .rela.plt relocations for the .got.plt
2170 1.1.1.2 christos entry that corresponds to this symbol.
2171 1.1.1.2 christos We have to count backwards here, and the result is only valid
2172 1.1.1.2 christos as an index into .rela.plt. We also have to undo the effect
2173 1.1.1.2 christos of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2174 1.1.1.2 christos .got.plt) for which gotplt_offset is adjusted, because while
2175 1.1 skrll that entry goes into .got.plt, its relocation goes into
2176 1.1 skrll .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2177 1.1 skrll processed as part of the runtime lazy .rela.plt relocation).
2178 1.1 skrll FIXME: There be literal constants here... */
2179 1.1 skrll bfd_vma rela_plt_index
2180 1.1 skrll = (htab->dtpmod_refcount != 0
2181 1.1 skrll ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2182 1.1 skrll
2183 1.1 skrll /* Get the offset into the .got table of the entry that corresponds
2184 1.1.1.2 christos to this function. Note that we embed knowledge that "incoming"
2185 1.1 skrll .got goes after .got.plt in the output without padding (pointer
2186 1.1 skrll aligned). However, that knowledge is present in several other
2187 1.1 skrll places too. */
2188 1.1 skrll bfd_vma got_offset
2189 1.1 skrll = (has_gotplt
2190 1.1 skrll ? gotplt_offset
2191 1.1 skrll : h->got.offset + htab->next_gotplt_entry);
2192 1.1 skrll
2193 1.1 skrll /* This symbol has an entry in the procedure linkage table. Set it
2194 1.1 skrll up. */
2195 1.1 skrll
2196 1.1 skrll BFD_ASSERT (h->dynindx != -1);
2197 1.1 skrll
2198 1.1 skrll splt = bfd_get_section_by_name (dynobj, ".plt");
2199 1.1 skrll sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2200 1.1 skrll srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2201 1.1 skrll BFD_ASSERT (splt != NULL && sgotplt != NULL
2202 1.1 skrll && (! has_gotplt || srela != NULL));
2203 1.1 skrll
2204 1.1 skrll got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2205 1.1 skrll
2206 1.1 skrll /* Fill in the entry in the procedure linkage table. */
2207 1.1 skrll if (! info->shared)
2208 1.1 skrll {
2209 1.1 skrll memcpy (splt->contents + h->plt.offset, plt_entry,
2210 1.1 skrll plt_entry_size);
2211 1.1 skrll
2212 1.1 skrll /* We need to enter the absolute address of the GOT entry here. */
2213 1.1 skrll bfd_put_32 (output_bfd, got_base + got_offset,
2214 1.1 skrll splt->contents + h->plt.offset + plt_off1);
2215 1.1 skrll }
2216 1.1 skrll else
2217 1.1 skrll {
2218 1.1 skrll memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2219 1.1 skrll plt_entry_size);
2220 1.1 skrll bfd_put_32 (output_bfd, got_offset,
2221 1.1 skrll splt->contents + h->plt.offset + plt_off1);
2222 1.1 skrll }
2223 1.1.1.2 christos
2224 1.1 skrll /* Fill in the plt entry and make a relocation, if this is a "real"
2225 1.1 skrll PLT entry. */
2226 1.1 skrll if (has_gotplt)
2227 1.1 skrll {
2228 1.1 skrll /* Fill in the offset to the reloc table. */
2229 1.1 skrll bfd_put_32 (output_bfd,
2230 1.1 skrll rela_plt_index * sizeof (Elf32_External_Rela),
2231 1.1 skrll splt->contents + h->plt.offset + plt_off2);
2232 1.1 skrll
2233 1.1 skrll /* Fill in the offset to the first PLT entry, where to "jump". */
2234 1.1 skrll bfd_put_32 (output_bfd,
2235 1.1 skrll - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2236 1.1 skrll splt->contents + h->plt.offset + plt_off3);
2237 1.1 skrll
2238 1.1 skrll /* Fill in the entry in the global offset table with the address of
2239 1.1 skrll the relocating stub. */
2240 1.1 skrll bfd_put_32 (output_bfd,
2241 1.1 skrll (splt->output_section->vma
2242 1.1 skrll + splt->output_offset
2243 1.1 skrll + h->plt.offset
2244 1.1 skrll + plt_stub_offset),
2245 1.1 skrll sgotplt->contents + got_offset);
2246 1.1.1.2 christos
2247 1.1 skrll /* Fill in the entry in the .rela.plt section. */
2248 1.1 skrll rela.r_offset = (sgotplt->output_section->vma
2249 1.1 skrll + sgotplt->output_offset
2250 1.1 skrll + got_offset);
2251 1.1 skrll rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2252 1.1 skrll rela.r_addend = 0;
2253 1.1 skrll loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2254 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2255 1.1 skrll }
2256 1.1 skrll
2257 1.1 skrll if (!h->def_regular)
2258 1.1 skrll {
2259 1.1 skrll /* Mark the symbol as undefined, rather than as defined in
2260 1.1 skrll the .plt section. Leave the value alone. */
2261 1.1 skrll sym->st_shndx = SHN_UNDEF;
2262 1.1 skrll
2263 1.1 skrll /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2264 1.1 skrll know whether resetting the value is significant; if it really
2265 1.1 skrll is, rather than a quirk or bug in the sparc port, then I
2266 1.1 skrll believe we'd see this elsewhere. */
2267 1.1 skrll /* If the symbol is weak, we do need to clear the value.
2268 1.1 skrll Otherwise, the PLT entry would provide a definition for
2269 1.1 skrll the symbol even if the symbol wasn't defined anywhere,
2270 1.1 skrll and so the symbol would never be NULL. */
2271 1.1 skrll if (!h->ref_regular_nonweak)
2272 1.1 skrll sym->st_value = 0;
2273 1.1 skrll }
2274 1.1 skrll }
2275 1.1.1.2 christos
2276 1.1 skrll /* For an ordinary program, we emit .got relocs only for symbols that
2277 1.1 skrll are in the dynamic-symbols table and are either defined by the
2278 1.1 skrll program or are undefined weak symbols, or are function symbols
2279 1.1 skrll where we do not output a PLT: the PLT reloc was output above and all
2280 1.1 skrll references to the function symbol are redirected to the PLT. */
2281 1.1 skrll if (h->got.offset != (bfd_vma) -1
2282 1.1 skrll && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2283 1.1 skrll && (info->shared
2284 1.1 skrll || (h->dynindx != -1
2285 1.1 skrll && h->plt.offset == (bfd_vma) -1
2286 1.1 skrll && !h->def_regular
2287 1.1 skrll && h->root.type != bfd_link_hash_undefweak)))
2288 1.1 skrll {
2289 1.1 skrll asection *sgot;
2290 1.1 skrll asection *srela;
2291 1.1 skrll Elf_Internal_Rela rela;
2292 1.1 skrll bfd_byte *loc;
2293 1.1 skrll bfd_byte *where;
2294 1.1 skrll
2295 1.1 skrll /* This symbol has an entry in the global offset table. Set it up. */
2296 1.1 skrll
2297 1.1 skrll sgot = bfd_get_section_by_name (dynobj, ".got");
2298 1.1 skrll srela = bfd_get_section_by_name (dynobj, ".rela.got");
2299 1.1 skrll BFD_ASSERT (sgot != NULL && srela != NULL);
2300 1.1 skrll
2301 1.1 skrll rela.r_offset = (sgot->output_section->vma
2302 1.1 skrll + sgot->output_offset
2303 1.1 skrll + (h->got.offset &~ (bfd_vma) 1));
2304 1.1 skrll
2305 1.1 skrll /* If this is a static link, or it is a -Bsymbolic link and the
2306 1.1 skrll symbol is defined locally or was forced to be local because
2307 1.1 skrll of a version file, we just want to emit a RELATIVE reloc.
2308 1.1 skrll The entry in the global offset table will already have been
2309 1.1 skrll initialized in the relocate_section function. */
2310 1.1 skrll where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2311 1.1 skrll if (! elf_hash_table (info)->dynamic_sections_created
2312 1.1 skrll || (info->shared
2313 1.1 skrll && (info->symbolic || h->dynindx == -1)
2314 1.1 skrll && h->def_regular))
2315 1.1 skrll {
2316 1.1 skrll rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2317 1.1 skrll rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2318 1.1 skrll }
2319 1.1 skrll else
2320 1.1 skrll {
2321 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2322 1.1 skrll rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2323 1.1 skrll rela.r_addend = 0;
2324 1.1 skrll }
2325 1.1 skrll
2326 1.1 skrll loc = srela->contents;
2327 1.1 skrll loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2328 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2329 1.1 skrll }
2330 1.1 skrll
2331 1.1 skrll if (h->needs_copy)
2332 1.1 skrll {
2333 1.1 skrll asection *s;
2334 1.1 skrll Elf_Internal_Rela rela;
2335 1.1 skrll bfd_byte *loc;
2336 1.1 skrll
2337 1.1 skrll /* This symbol needs a copy reloc. Set it up. */
2338 1.1 skrll
2339 1.1 skrll BFD_ASSERT (h->dynindx != -1
2340 1.1 skrll && (h->root.type == bfd_link_hash_defined
2341 1.1 skrll || h->root.type == bfd_link_hash_defweak));
2342 1.1 skrll
2343 1.1 skrll s = bfd_get_section_by_name (h->root.u.def.section->owner,
2344 1.1 skrll ".rela.bss");
2345 1.1 skrll BFD_ASSERT (s != NULL);
2346 1.1 skrll
2347 1.1 skrll rela.r_offset = (h->root.u.def.value
2348 1.1 skrll + h->root.u.def.section->output_section->vma
2349 1.1 skrll + h->root.u.def.section->output_offset);
2350 1.1 skrll rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2351 1.1 skrll rela.r_addend = 0;
2352 1.1 skrll loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2353 1.1 skrll bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2354 1.1 skrll }
2355 1.1 skrll
2356 1.1 skrll /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2357 1.1.1.2 christos if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2358 1.1.1.2 christos || h == elf_hash_table (info)->hgot)
2359 1.1.1.2 christos sym->st_shndx = SHN_ABS;
2360 1.1 skrll
2361 1.1 skrll return TRUE;
2362 1.1 skrll }
2363 1.1 skrll
2364 1.1 skrll /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2366 1.1 skrll offsets were changed, as part of -z combreloc handling, from those we
2367 1.1 skrll computed. */
2368 1.1 skrll
2369 1.1 skrll static bfd_boolean
2370 1.1 skrll elf_cris_finish_dynamic_sections (output_bfd, info)
2371 1.1 skrll bfd *output_bfd;
2372 1.1 skrll struct bfd_link_info *info;
2373 1.1 skrll {
2374 1.1 skrll bfd *dynobj;
2375 1.1 skrll asection *sgot;
2376 1.1 skrll asection *sdyn;
2377 1.1 skrll
2378 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
2379 1.1 skrll
2380 1.1 skrll sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2381 1.1 skrll BFD_ASSERT (sgot != NULL);
2382 1.1 skrll sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2383 1.1 skrll
2384 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
2385 1.1 skrll {
2386 1.1 skrll asection *splt;
2387 1.1 skrll Elf32_External_Dyn *dyncon, *dynconend;
2388 1.1 skrll
2389 1.1 skrll splt = bfd_get_section_by_name (dynobj, ".plt");
2390 1.1 skrll BFD_ASSERT (splt != NULL && sdyn != NULL);
2391 1.1 skrll
2392 1.1 skrll dyncon = (Elf32_External_Dyn *) sdyn->contents;
2393 1.1 skrll dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2394 1.1 skrll for (; dyncon < dynconend; dyncon++)
2395 1.1 skrll {
2396 1.1 skrll Elf_Internal_Dyn dyn;
2397 1.1 skrll asection *s;
2398 1.1 skrll
2399 1.1 skrll bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2400 1.1 skrll
2401 1.1 skrll switch (dyn.d_tag)
2402 1.1 skrll {
2403 1.1 skrll default:
2404 1.1 skrll break;
2405 1.1 skrll
2406 1.1 skrll case DT_PLTGOT:
2407 1.1 skrll s = bfd_get_section_by_name (output_bfd, ".got");
2408 1.1 skrll BFD_ASSERT (s != NULL);
2409 1.1 skrll dyn.d_un.d_ptr = s->vma;
2410 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2411 1.1 skrll break;
2412 1.1 skrll
2413 1.1 skrll case DT_JMPREL:
2414 1.1 skrll /* Yes, we *can* have a .plt and no .plt.rela, for instance
2415 1.1 skrll if all symbols are found in the .got (not .got.plt). */
2416 1.1 skrll s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2417 1.1 skrll dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2418 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2419 1.1 skrll break;
2420 1.1 skrll
2421 1.1 skrll case DT_PLTRELSZ:
2422 1.1 skrll s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2423 1.1 skrll if (s == NULL)
2424 1.1 skrll dyn.d_un.d_val = 0;
2425 1.1 skrll else
2426 1.1 skrll dyn.d_un.d_val = s->size;
2427 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2428 1.1 skrll break;
2429 1.1 skrll
2430 1.1 skrll case DT_RELASZ:
2431 1.1 skrll /* The procedure linkage table relocs (DT_JMPREL) should
2432 1.1 skrll not be included in the overall relocs (DT_RELA).
2433 1.1 skrll Therefore, we override the DT_RELASZ entry here to
2434 1.1 skrll make it not include the JMPREL relocs. Since the
2435 1.1 skrll linker script arranges for .rela.plt to follow all
2436 1.1 skrll other relocation sections, we don't have to worry
2437 1.1 skrll about changing the DT_RELA entry. */
2438 1.1 skrll s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2439 1.1 skrll if (s != NULL)
2440 1.1 skrll dyn.d_un.d_val -= s->size;
2441 1.1 skrll bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2442 1.1 skrll break;
2443 1.1 skrll }
2444 1.1 skrll }
2445 1.1 skrll
2446 1.1 skrll /* Fill in the first entry in the procedure linkage table. */
2447 1.1 skrll if (splt->size > 0)
2448 1.1 skrll {
2449 1.1 skrll if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2450 1.1 skrll {
2451 1.1 skrll if (info->shared)
2452 1.1 skrll memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2453 1.1 skrll PLT_ENTRY_SIZE_V32);
2454 1.1 skrll else
2455 1.1 skrll {
2456 1.1 skrll memcpy (splt->contents, elf_cris_plt0_entry_v32,
2457 1.1 skrll PLT_ENTRY_SIZE_V32);
2458 1.1 skrll bfd_put_32 (output_bfd,
2459 1.1 skrll sgot->output_section->vma
2460 1.1 skrll + sgot->output_offset + 4,
2461 1.1 skrll splt->contents + 4);
2462 1.1 skrll
2463 1.1 skrll elf_section_data (splt->output_section)->this_hdr.sh_entsize
2464 1.1 skrll = PLT_ENTRY_SIZE_V32;
2465 1.1 skrll }
2466 1.1 skrll }
2467 1.1 skrll else
2468 1.1 skrll {
2469 1.1 skrll if (info->shared)
2470 1.1 skrll memcpy (splt->contents, elf_cris_pic_plt0_entry,
2471 1.1 skrll PLT_ENTRY_SIZE);
2472 1.1 skrll else
2473 1.1 skrll {
2474 1.1 skrll memcpy (splt->contents, elf_cris_plt0_entry,
2475 1.1 skrll PLT_ENTRY_SIZE);
2476 1.1 skrll bfd_put_32 (output_bfd,
2477 1.1 skrll sgot->output_section->vma
2478 1.1 skrll + sgot->output_offset + 4,
2479 1.1 skrll splt->contents + 6);
2480 1.1 skrll bfd_put_32 (output_bfd,
2481 1.1 skrll sgot->output_section->vma
2482 1.1 skrll + sgot->output_offset + 8,
2483 1.1 skrll splt->contents + 14);
2484 1.1 skrll
2485 1.1 skrll elf_section_data (splt->output_section)->this_hdr.sh_entsize
2486 1.1 skrll = PLT_ENTRY_SIZE;
2487 1.1 skrll }
2488 1.1 skrll }
2489 1.1 skrll }
2490 1.1 skrll }
2491 1.1 skrll
2492 1.1 skrll /* Fill in the first three entries in the global offset table. */
2493 1.1 skrll if (sgot->size > 0)
2494 1.1 skrll {
2495 1.1 skrll if (sdyn == NULL)
2496 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2497 1.1 skrll else
2498 1.1 skrll bfd_put_32 (output_bfd,
2499 1.1 skrll sdyn->output_section->vma + sdyn->output_offset,
2500 1.1 skrll sgot->contents);
2501 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2502 1.1 skrll bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2503 1.1 skrll }
2504 1.1 skrll
2505 1.1 skrll elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2506 1.1 skrll
2507 1.1 skrll return TRUE;
2508 1.1 skrll }
2509 1.1 skrll
2510 1.1 skrll /* Return the section that should be marked against GC for a given
2512 1.1.1.2 christos relocation. */
2513 1.1 skrll
2514 1.1.1.2 christos static asection *
2515 1.1 skrll cris_elf_gc_mark_hook (asection *sec,
2516 1.1 skrll struct bfd_link_info *info,
2517 1.1 skrll Elf_Internal_Rela *rel,
2518 1.1 skrll struct elf_link_hash_entry *h,
2519 1.1.1.2 christos Elf_Internal_Sym *sym)
2520 1.1.1.2 christos {
2521 1.1.1.2 christos enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2522 1.1 skrll if (h != NULL)
2523 1.1 skrll switch (r_type)
2524 1.1 skrll {
2525 1.1 skrll case R_CRIS_GNU_VTINHERIT:
2526 1.1 skrll case R_CRIS_GNU_VTENTRY:
2527 1.1 skrll return NULL;
2528 1.1 skrll
2529 1.1 skrll default:
2530 1.1 skrll break;
2531 1.1 skrll }
2532 1.1 skrll
2533 1.1 skrll return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2534 1.1 skrll }
2535 1.1.1.2 christos
2536 1.1 skrll /* Update the got entry reference counts for the section being removed. */
2537 1.1 skrll
2538 1.1 skrll static bfd_boolean
2539 1.1 skrll cris_elf_gc_sweep_hook (bfd *abfd,
2540 1.1 skrll struct bfd_link_info *info,
2541 1.1 skrll asection *sec,
2542 1.1 skrll const Elf_Internal_Rela *relocs)
2543 1.1 skrll {
2544 1.1 skrll struct elf_cris_link_hash_table * htab;
2545 1.1 skrll Elf_Internal_Shdr *symtab_hdr;
2546 1.1 skrll struct elf_link_hash_entry **sym_hashes;
2547 1.1 skrll bfd_signed_vma *local_got_refcounts;
2548 1.1 skrll const Elf_Internal_Rela *rel, *relend;
2549 1.1 skrll bfd *dynobj;
2550 1.1 skrll asection *sgot;
2551 1.1.1.2 christos asection *srelgot;
2552 1.1.1.2 christos
2553 1.1.1.2 christos if (info->relocatable)
2554 1.1.1.2 christos return TRUE;
2555 1.1 skrll
2556 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
2557 1.1 skrll if (dynobj == NULL)
2558 1.1 skrll return TRUE;
2559 1.1 skrll
2560 1.1 skrll htab = elf_cris_hash_table (info);
2561 1.1 skrll if (htab == NULL)
2562 1.1 skrll return FALSE;
2563 1.1 skrll
2564 1.1 skrll symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2565 1.1 skrll sym_hashes = elf_sym_hashes (abfd);
2566 1.1 skrll local_got_refcounts = elf_local_got_refcounts (abfd);
2567 1.1.1.2 christos
2568 1.1.1.2 christos sgot = bfd_get_section_by_name (dynobj, ".got");
2569 1.1.1.2 christos srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2570 1.1 skrll
2571 1.1 skrll relend = relocs + sec->reloc_count;
2572 1.1 skrll for (rel = relocs; rel < relend; rel++)
2573 1.1 skrll {
2574 1.1 skrll unsigned long r_symndx;
2575 1.1 skrll struct elf_link_hash_entry *h = NULL;
2576 1.1 skrll bfd_signed_vma got_element_size = 4;
2577 1.1 skrll bfd_signed_vma *specific_refcount = NULL;
2578 1.1 skrll enum elf_cris_reloc_type r_type;
2579 1.1 skrll
2580 1.1.1.2 christos r_symndx = ELF32_R_SYM (rel->r_info);
2581 1.1.1.2 christos if (r_symndx >= symtab_hdr->sh_info)
2582 1.1.1.2 christos {
2583 1.1.1.2 christos h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2584 1.1.1.2 christos while (h->root.type == bfd_link_hash_indirect
2585 1.1.1.2 christos || h->root.type == bfd_link_hash_warning)
2586 1.1.1.2 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
2587 1.1.1.2 christos }
2588 1.1.1.2 christos
2589 1.1.1.2 christos r_type = ELF32_R_TYPE (rel->r_info);
2590 1.1.1.2 christos switch (r_type)
2591 1.1.1.2 christos {
2592 1.1.1.2 christos case R_CRIS_32_GOT:
2593 1.1.1.2 christos case R_CRIS_16_GOT:
2594 1.1.1.2 christos case R_CRIS_16_GOTPLT:
2595 1.1.1.2 christos case R_CRIS_32_GOTPLT:
2596 1.1.1.2 christos specific_refcount = h != NULL
2597 1.1.1.2 christos ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2598 1.1.1.2 christos : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2599 1.1.1.2 christos break;
2600 1.1.1.2 christos
2601 1.1.1.2 christos case R_CRIS_32_GD:
2602 1.1.1.2 christos case R_CRIS_32_GOT_GD:
2603 1.1.1.2 christos case R_CRIS_16_GOT_GD:
2604 1.1.1.2 christos got_element_size = 8;
2605 1.1.1.2 christos specific_refcount = h != NULL
2606 1.1.1.2 christos ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2607 1.1.1.2 christos : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2608 1.1.1.2 christos break;
2609 1.1.1.2 christos
2610 1.1.1.2 christos case R_CRIS_32_IE:
2611 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
2612 1.1.1.2 christos case R_CRIS_32_GOT_TPREL:
2613 1.1.1.2 christos specific_refcount = h != NULL
2614 1.1 skrll ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2615 1.1.1.2 christos : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2616 1.1.1.2 christos break;
2617 1.1.1.2 christos
2618 1.1.1.2 christos default:
2619 1.1.1.2 christos break;
2620 1.1.1.2 christos }
2621 1.1 skrll
2622 1.1 skrll switch (r_type)
2623 1.1 skrll {
2624 1.1 skrll case R_CRIS_32_IE:
2625 1.1.1.2 christos case R_CRIS_32_GD:
2626 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
2627 1.1.1.2 christos case R_CRIS_32_GOT_TPREL:
2628 1.1.1.2 christos case R_CRIS_32_GOT_GD:
2629 1.1.1.2 christos case R_CRIS_16_GOT_GD:
2630 1.1.1.2 christos case R_CRIS_16_GOT:
2631 1.1.1.2 christos case R_CRIS_32_GOT:
2632 1.1.1.2 christos if (h != NULL)
2633 1.1 skrll {
2634 1.1.1.2 christos /* If the counters are 0 when we got here, we've
2635 1.1.1.2 christos miscounted somehow somewhere, an internal error. */
2636 1.1.1.2 christos BFD_ASSERT (h->got.refcount > 0);
2637 1.1 skrll --h->got.refcount;
2638 1.1 skrll
2639 1.1 skrll BFD_ASSERT (*specific_refcount > 0);
2640 1.1 skrll --*specific_refcount;
2641 1.1 skrll if (*specific_refcount == 0)
2642 1.1 skrll {
2643 1.1 skrll /* We don't need the .got entry any more. */
2644 1.1.1.2 christos sgot->size -= got_element_size;
2645 1.1.1.2 christos srelgot->size -= sizeof (Elf32_External_Rela);
2646 1.1.1.2 christos }
2647 1.1.1.2 christos break;
2648 1.1.1.2 christos }
2649 1.1.1.2 christos
2650 1.1.1.2 christos local_got_reloc:
2651 1.1.1.2 christos if (local_got_refcounts != NULL)
2652 1.1 skrll {
2653 1.1.1.2 christos /* If the counters are 0 when we got here, we've
2654 1.1.1.2 christos miscounted somehow somewhere, an internal error. */
2655 1.1.1.2 christos BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2656 1.1.1.2 christos --local_got_refcounts[r_symndx];
2657 1.1 skrll
2658 1.1 skrll BFD_ASSERT (*specific_refcount > 0);
2659 1.1 skrll --*specific_refcount;
2660 1.1 skrll if (*specific_refcount == 0)
2661 1.1 skrll {
2662 1.1 skrll /* We don't need the .got entry any more. */
2663 1.1 skrll sgot->size -= got_element_size;
2664 1.1 skrll if (info->shared)
2665 1.1 skrll srelgot->size -= sizeof (Elf32_External_Rela);
2666 1.1 skrll }
2667 1.1 skrll }
2668 1.1 skrll break;
2669 1.1 skrll
2670 1.1 skrll case R_CRIS_16_GOTPLT:
2671 1.1 skrll case R_CRIS_32_GOTPLT:
2672 1.1 skrll /* For local symbols, treat these like GOT relocs. */
2673 1.1 skrll if (h == NULL)
2674 1.1 skrll goto local_got_reloc;
2675 1.1 skrll /* Fall through. */
2676 1.1 skrll
2677 1.1 skrll case R_CRIS_32_PLT_GOTREL:
2678 1.1 skrll /* FIXME: We don't garbage-collect away the .got section. */
2679 1.1 skrll if (local_got_refcounts != NULL)
2680 1.1 skrll local_got_refcounts[-1]--;
2681 1.1 skrll /* Fall through. */
2682 1.1 skrll
2683 1.1 skrll case R_CRIS_8_PCREL:
2684 1.1 skrll case R_CRIS_16_PCREL:
2685 1.1 skrll case R_CRIS_32_PCREL:
2686 1.1.1.2 christos case R_CRIS_32_PLT_PCREL:
2687 1.1.1.2 christos if (h != NULL)
2688 1.1.1.2 christos {
2689 1.1.1.2 christos if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2690 1.1.1.2 christos && h->plt.refcount > 0)
2691 1.1.1.2 christos --h->plt.refcount;
2692 1.1.1.2 christos }
2693 1.1.1.2 christos break;
2694 1.1.1.2 christos
2695 1.1.1.2 christos case R_CRIS_32_DTPREL:
2696 1.1.1.2 christos /* This'd be a .dtpreld entry in e.g. debug info. */
2697 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
2698 1.1.1.2 christos break;
2699 1.1 skrll /* Fall through. */
2700 1.1 skrll case R_CRIS_16_DTPREL:
2701 1.1 skrll htab->dtpmod_refcount--;
2702 1.1 skrll if (htab->dtpmod_refcount == 0)
2703 1.1 skrll htab->next_gotplt_entry -= 8;
2704 1.1 skrll BFD_ASSERT (local_got_refcounts != NULL);
2705 1.1 skrll local_got_refcounts[-1]--;
2706 1.1 skrll break;
2707 1.1.1.2 christos
2708 1.1.1.2 christos default:
2709 1.1.1.2 christos break;
2710 1.1.1.2 christos }
2711 1.1.1.2 christos }
2712 1.1.1.2 christos
2713 1.1.1.2 christos return TRUE;
2714 1.1.1.2 christos }
2715 1.1.1.2 christos
2716 1.1.1.2 christos /* The elf_backend_plt_sym_val hook function. */
2717 1.1.1.2 christos
2718 1.1.1.2 christos static bfd_vma
2719 1.1.1.2 christos cris_elf_plt_sym_val (bfd_vma i, const asection *plt,
2720 1.1.1.2 christos const arelent *rel ATTRIBUTE_UNUSED)
2721 1.1.1.2 christos {
2722 1.1 skrll bfd_size_type plt_entry_size;
2723 1.1 skrll
2724 1.1 skrll plt_entry_size
2725 1.1 skrll = (bfd_get_mach (plt->owner) == bfd_mach_cris_v32
2726 1.1 skrll ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2727 1.1 skrll
2728 1.1 skrll return plt->vma + (i + 1) * plt_entry_size;
2729 1.1 skrll }
2730 1.1 skrll
2731 1.1 skrll /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2732 1.1 skrll entry but we found we will not create any. Called when we find we will
2733 1.1 skrll not have any PLT for this symbol, by for example
2734 1.1 skrll elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2735 1.1 skrll or elf_cris_size_dynamic_sections if no dynamic sections will be
2736 1.1 skrll created (we're only linking static objects). */
2737 1.1 skrll
2738 1.1 skrll static bfd_boolean
2739 1.1 skrll elf_cris_adjust_gotplt_to_got (h, p)
2740 1.1 skrll struct elf_cris_link_hash_entry *h;
2741 1.1 skrll PTR p;
2742 1.1 skrll {
2743 1.1.1.2 christos struct bfd_link_info *info = (struct bfd_link_info *) p;
2744 1.1 skrll
2745 1.1.1.2 christos if (h->root.root.type == bfd_link_hash_warning)
2746 1.1.1.2 christos h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2747 1.1 skrll
2748 1.1 skrll /* If nobody wanted a GOTPLT with this symbol, we're done. */
2749 1.1.1.2 christos if (h->gotplt_refcount <= 0)
2750 1.1 skrll return TRUE;
2751 1.1 skrll
2752 1.1 skrll if (h->reg_got_refcount > 0)
2753 1.1 skrll {
2754 1.1 skrll /* There's a GOT entry for this symbol. Just adjust the refcounts.
2755 1.1 skrll Probably not necessary at this stage, but keeping them accurate
2756 1.1 skrll helps avoiding surprises later. */
2757 1.1 skrll h->root.got.refcount += h->gotplt_refcount;
2758 1.1 skrll h->reg_got_refcount += h->gotplt_refcount;
2759 1.1 skrll h->gotplt_refcount = 0;
2760 1.1 skrll }
2761 1.1 skrll else
2762 1.1 skrll {
2763 1.1.1.2 christos /* No GOT entry for this symbol. We need to create one. */
2764 1.1.1.2 christos bfd *dynobj = elf_hash_table (info)->dynobj;
2765 1.1.1.2 christos asection *sgot;
2766 1.1 skrll asection *srelgot;
2767 1.1 skrll
2768 1.1 skrll BFD_ASSERT (dynobj != NULL);
2769 1.1 skrll sgot = bfd_get_section_by_name (dynobj, ".got");
2770 1.1 skrll srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2771 1.1 skrll
2772 1.1 skrll /* Put accurate refcounts there. */
2773 1.1 skrll h->root.got.refcount += h->gotplt_refcount;
2774 1.1 skrll h->reg_got_refcount = h->gotplt_refcount;
2775 1.1 skrll
2776 1.1 skrll h->gotplt_refcount = 0;
2777 1.1 skrll
2778 1.1 skrll /* We always have a .got and a .rela.got section if there were
2779 1.1 skrll GOTPLT relocs in input. */
2780 1.1 skrll BFD_ASSERT (sgot != NULL && srelgot != NULL);
2781 1.1 skrll
2782 1.1 skrll /* Allocate space in the .got section. */
2783 1.1 skrll sgot->size += 4;
2784 1.1 skrll
2785 1.1 skrll /* Allocate relocation space. */
2786 1.1 skrll srelgot->size += sizeof (Elf32_External_Rela);
2787 1.1 skrll }
2788 1.1 skrll
2789 1.1 skrll return TRUE;
2790 1.1 skrll }
2791 1.1 skrll
2792 1.1 skrll /* Try to fold PLT entries with GOT entries. There are two cases when we
2793 1.1 skrll want to do this:
2794 1.1 skrll
2795 1.1 skrll - When all PLT references are GOTPLT references, and there are GOT
2796 1.1 skrll references, and this is not the executable. We don't have to
2797 1.1 skrll generate a PLT at all.
2798 1.1 skrll
2799 1.1 skrll - When there are both (ordinary) PLT references and GOT references,
2800 1.1 skrll and this isn't the executable.
2801 1.1 skrll We want to make the PLT reference use the ordinary GOT entry rather
2802 1.1 skrll than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2803 1.1 skrll since the GOT entry will have to be resolved at startup anyway.
2804 1.1 skrll
2805 1.1 skrll Though the latter case is handled when room for the PLT is allocated,
2806 1.1 skrll not here.
2807 1.1 skrll
2808 1.1 skrll By folding into the GOT, we may need a round-trip to a PLT in the
2809 1.1 skrll executable for calls, a loss in performance. Still, losing a
2810 1.1 skrll reloc is a win in size and at least in start-up time.
2811 1.1 skrll
2812 1.1 skrll Note that this function is called before symbols are forced local by
2813 1.1 skrll version scripts. The differing cases are handled by
2814 1.1 skrll elf_cris_hide_symbol. */
2815 1.1 skrll
2816 1.1 skrll static bfd_boolean
2817 1.1 skrll elf_cris_try_fold_plt_to_got (h, p)
2818 1.1 skrll struct elf_cris_link_hash_entry *h;
2819 1.1 skrll PTR p;
2820 1.1 skrll {
2821 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) p;
2822 1.1 skrll
2823 1.1 skrll /* If there are no GOT references for this symbol, we can't fold any
2824 1.1 skrll other reference so there's nothing to do. Likewise if there are no
2825 1.1 skrll PLT references; GOTPLT references included. */
2826 1.1 skrll if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2827 1.1 skrll return TRUE;
2828 1.1 skrll
2829 1.1 skrll /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2830 1.1 skrll BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2831 1.1 skrll
2832 1.1 skrll if (h->gotplt_refcount == h->root.plt.refcount)
2833 1.1 skrll {
2834 1.1 skrll /* The only PLT references are GOTPLT references, and there are GOT
2835 1.1 skrll references. Convert PLT to GOT references. */
2836 1.1 skrll if (! elf_cris_adjust_gotplt_to_got (h, info))
2837 1.1 skrll return FALSE;
2838 1.1 skrll
2839 1.1 skrll /* Clear the PLT references, so no PLT will be created. */
2840 1.1 skrll h->root.plt.offset = (bfd_vma) -1;
2841 1.1 skrll }
2842 1.1 skrll
2843 1.1 skrll return TRUE;
2844 1.1 skrll }
2845 1.1 skrll
2846 1.1 skrll /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2847 1.1 skrll to use a GOT entry (and create one) rather than requiring a GOTPLT
2848 1.1 skrll entry. */
2849 1.1 skrll
2850 1.1 skrll static void
2851 1.1 skrll elf_cris_hide_symbol (info, h, force_local)
2852 1.1 skrll struct bfd_link_info *info;
2853 1.1 skrll struct elf_link_hash_entry *h;
2854 1.1 skrll bfd_boolean force_local;
2855 1.1 skrll {
2856 1.1 skrll elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2857 1.1 skrll
2858 1.1 skrll _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2859 1.1.1.2 christos }
2860 1.1.1.2 christos
2861 1.1 skrll /* Adjust a symbol defined by a dynamic object and referenced by a
2862 1.1.1.2 christos regular object. The current definition is in some section of the
2863 1.1 skrll dynamic object, but we're not including those sections. We have to
2864 1.1 skrll change the definition to something the rest of the link can
2865 1.1 skrll understand. */
2866 1.1 skrll
2867 1.1.1.2 christos static bfd_boolean
2868 1.1.1.2 christos elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2869 1.1.1.2 christos struct elf_link_hash_entry *h)
2870 1.1.1.2 christos {
2871 1.1 skrll struct elf_cris_link_hash_table * htab;
2872 1.1 skrll bfd *dynobj;
2873 1.1 skrll asection *s;
2874 1.1 skrll bfd_size_type plt_entry_size;
2875 1.1 skrll
2876 1.1 skrll htab = elf_cris_hash_table (info);
2877 1.1 skrll if (htab == NULL)
2878 1.1 skrll return FALSE;
2879 1.1 skrll
2880 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
2881 1.1 skrll
2882 1.1 skrll /* Make sure we know what is going on here. */
2883 1.1 skrll BFD_ASSERT (dynobj != NULL
2884 1.1 skrll && (h->needs_plt
2885 1.1 skrll || h->u.weakdef != NULL
2886 1.1 skrll || (h->def_dynamic
2887 1.1 skrll && h->ref_regular
2888 1.1 skrll && !h->def_regular)));
2889 1.1 skrll
2890 1.1 skrll plt_entry_size
2891 1.1 skrll = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2892 1.1 skrll ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2893 1.1 skrll
2894 1.1 skrll /* If this is a function, put it in the procedure linkage table. We
2895 1.1 skrll will fill in the contents of the procedure linkage table later,
2896 1.1 skrll when we know the address of the .got section. */
2897 1.1 skrll if (h->type == STT_FUNC
2898 1.1 skrll || h->needs_plt)
2899 1.1 skrll {
2900 1.1 skrll /* If we link a program (not a DSO), we'll get rid of unnecessary
2901 1.1 skrll PLT entries; we point to the actual symbols -- even for pic
2902 1.1 skrll relocs, because a program built with -fpic should have the same
2903 1.1 skrll result as one built without -fpic, specifically considering weak
2904 1.1 skrll symbols.
2905 1.1 skrll FIXME: m68k and i386 differ here, for unclear reasons. */
2906 1.1 skrll if (! info->shared
2907 1.1 skrll && !h->def_dynamic)
2908 1.1 skrll {
2909 1.1 skrll /* This case can occur if we saw a PLT reloc in an input file,
2910 1.1 skrll but the symbol was not defined by a dynamic object. In such
2911 1.1 skrll a case, we don't actually need to build a procedure linkage
2912 1.1 skrll table, and we can just do an absolute or PC reloc instead, or
2913 1.1 skrll change a .got.plt index to a .got index for GOTPLT relocs. */
2914 1.1 skrll BFD_ASSERT (h->needs_plt);
2915 1.1 skrll h->needs_plt = 0;
2916 1.1 skrll h->plt.offset = (bfd_vma) -1;
2917 1.1 skrll return
2918 1.1 skrll elf_cris_adjust_gotplt_to_got ((struct
2919 1.1 skrll elf_cris_link_hash_entry *) h,
2920 1.1 skrll info);
2921 1.1 skrll }
2922 1.1 skrll
2923 1.1 skrll /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2924 1.1 skrll where a pointer-equivalent symbol was unimportant (i.e. more
2925 1.1 skrll like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2926 1.1 skrll of the PLT. We can't for the executable, because the GOT
2927 1.1 skrll entries will point to the PLT there (and be constant). */
2928 1.1 skrll if (info->shared
2929 1.1 skrll && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2930 1.1 skrll h, info))
2931 1.1 skrll return FALSE;
2932 1.1 skrll
2933 1.1 skrll /* GC or folding may have rendered this entry unused. */
2934 1.1 skrll if (h->plt.refcount <= 0)
2935 1.1 skrll {
2936 1.1 skrll h->needs_plt = 0;
2937 1.1 skrll h->plt.offset = (bfd_vma) -1;
2938 1.1 skrll return TRUE;
2939 1.1 skrll }
2940 1.1 skrll
2941 1.1 skrll /* Make sure this symbol is output as a dynamic symbol. */
2942 1.1 skrll if (h->dynindx == -1)
2943 1.1 skrll {
2944 1.1 skrll if (! bfd_elf_link_record_dynamic_symbol (info, h))
2945 1.1 skrll return FALSE;
2946 1.1 skrll }
2947 1.1 skrll
2948 1.1 skrll s = bfd_get_section_by_name (dynobj, ".plt");
2949 1.1 skrll BFD_ASSERT (s != NULL);
2950 1.1 skrll
2951 1.1 skrll /* If this is the first .plt entry, make room for the special
2952 1.1 skrll first entry. */
2953 1.1 skrll if (s->size == 0)
2954 1.1 skrll s->size += plt_entry_size;
2955 1.1 skrll
2956 1.1 skrll /* If this symbol is not defined in a regular file, and we are
2957 1.1 skrll not generating a shared library, then set the symbol to this
2958 1.1 skrll location in the .plt. */
2959 1.1 skrll if (!info->shared
2960 1.1 skrll && !h->def_regular)
2961 1.1 skrll {
2962 1.1 skrll h->root.u.def.section = s;
2963 1.1 skrll h->root.u.def.value = s->size;
2964 1.1 skrll }
2965 1.1 skrll
2966 1.1 skrll /* If there's already a GOT entry, use that, not a .got.plt. A
2967 1.1 skrll GOT field still has a reference count when we get here; it's
2968 1.1 skrll not yet changed to an offset. We can't do this for an
2969 1.1 skrll executable, because then the reloc associated with the PLT
2970 1.1 skrll would get a non-PLT reloc pointing to the PLT. FIXME: Move
2971 1.1 skrll this to elf_cris_try_fold_plt_to_got. */
2972 1.1 skrll if (info->shared && h->got.refcount > 0)
2973 1.1 skrll {
2974 1.1 skrll h->got.refcount += h->plt.refcount;
2975 1.1 skrll
2976 1.1 skrll /* Mark the PLT offset to use the GOT entry by setting the low
2977 1.1 skrll bit in the plt offset; it is always a multiple of
2978 1.1 skrll plt_entry_size (which is at least a multiple of 2). */
2979 1.1 skrll BFD_ASSERT ((s->size % plt_entry_size) == 0);
2980 1.1 skrll
2981 1.1 skrll /* Change the PLT refcount to an offset. */
2982 1.1 skrll h->plt.offset = s->size;
2983 1.1 skrll
2984 1.1 skrll /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2985 1.1 skrll that the got entry should be used instead. */
2986 1.1 skrll BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2987 1.1 skrll h)->gotplt_offset == 0);
2988 1.1 skrll
2989 1.1 skrll /* Make room for this entry. */
2990 1.1 skrll s->size += plt_entry_size;
2991 1.1 skrll
2992 1.1 skrll return TRUE;
2993 1.1 skrll }
2994 1.1 skrll
2995 1.1.1.2 christos /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2996 1.1.1.2 christos h->plt.offset = s->size;
2997 1.1 skrll
2998 1.1 skrll /* Make room for this entry. */
2999 1.1 skrll s->size += plt_entry_size;
3000 1.1 skrll
3001 1.1 skrll /* We also need to make an entry in the .got.plt section, which
3002 1.1 skrll will be placed in the .got section by the linker script. */
3003 1.1 skrll ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
3004 1.1 skrll = htab->next_gotplt_entry;
3005 1.1 skrll htab->next_gotplt_entry += 4;
3006 1.1 skrll
3007 1.1 skrll s = bfd_get_section_by_name (dynobj, ".got.plt");
3008 1.1 skrll BFD_ASSERT (s != NULL);
3009 1.1 skrll s->size += 4;
3010 1.1 skrll
3011 1.1 skrll /* We also need to make an entry in the .rela.plt section. */
3012 1.1 skrll
3013 1.1 skrll s = bfd_get_section_by_name (dynobj, ".rela.plt");
3014 1.1 skrll BFD_ASSERT (s != NULL);
3015 1.1 skrll s->size += sizeof (Elf32_External_Rela);
3016 1.1 skrll
3017 1.1 skrll return TRUE;
3018 1.1 skrll }
3019 1.1 skrll
3020 1.1 skrll /* Reinitialize the plt offset now that it is not used as a reference
3021 1.1 skrll count any more. */
3022 1.1 skrll h->plt.offset = (bfd_vma) -1;
3023 1.1 skrll
3024 1.1 skrll /* If this is a weak symbol, and there is a real definition, the
3025 1.1 skrll processor independent code will have arranged for us to see the
3026 1.1 skrll real definition first, and we can just use the same value. */
3027 1.1 skrll if (h->u.weakdef != NULL)
3028 1.1 skrll {
3029 1.1 skrll BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3030 1.1 skrll || h->u.weakdef->root.type == bfd_link_hash_defweak);
3031 1.1 skrll h->root.u.def.section = h->u.weakdef->root.u.def.section;
3032 1.1 skrll h->root.u.def.value = h->u.weakdef->root.u.def.value;
3033 1.1 skrll return TRUE;
3034 1.1 skrll }
3035 1.1 skrll
3036 1.1 skrll /* This is a reference to a symbol defined by a dynamic object which
3037 1.1 skrll is not a function. */
3038 1.1 skrll
3039 1.1 skrll /* If we are creating a shared library, we must presume that the
3040 1.1 skrll only references to the symbol are via the global offset table.
3041 1.1 skrll For such cases we need not do anything here; the relocations will
3042 1.1 skrll be handled correctly by relocate_section. */
3043 1.1 skrll if (info->shared)
3044 1.1 skrll return TRUE;
3045 1.1 skrll
3046 1.1 skrll /* If there are no references to this symbol that do not use the
3047 1.1 skrll GOT, we don't need to generate a copy reloc. */
3048 1.1 skrll if (!h->non_got_ref)
3049 1.1 skrll return TRUE;
3050 1.1 skrll
3051 1.1 skrll if (h->size == 0)
3052 1.1 skrll {
3053 1.1 skrll (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3054 1.1 skrll h->root.root.string);
3055 1.1 skrll return TRUE;
3056 1.1 skrll }
3057 1.1 skrll
3058 1.1 skrll /* We must allocate the symbol in our .dynbss section, which will
3059 1.1 skrll become part of the .bss section of the executable. There will be
3060 1.1 skrll an entry for this symbol in the .dynsym section. The dynamic
3061 1.1 skrll object will contain position independent code, so all references
3062 1.1 skrll from the dynamic object to this symbol will go through the global
3063 1.1 skrll offset table. The dynamic linker will use the .dynsym entry to
3064 1.1 skrll determine the address it must put in the global offset table, so
3065 1.1 skrll both the dynamic object and the regular object will refer to the
3066 1.1 skrll same memory location for the variable. */
3067 1.1 skrll
3068 1.1 skrll s = bfd_get_section_by_name (dynobj, ".dynbss");
3069 1.1 skrll BFD_ASSERT (s != NULL);
3070 1.1 skrll
3071 1.1 skrll /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3072 1.1 skrll copy the initial value out of the dynamic object and into the
3073 1.1 skrll runtime process image. We need to remember the offset into the
3074 1.1 skrll .rela.bss section we are going to use. */
3075 1.1 skrll if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3076 1.1 skrll {
3077 1.1 skrll asection *srel;
3078 1.1 skrll
3079 1.1.1.2 christos srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3080 1.1.1.2 christos BFD_ASSERT (srel != NULL);
3081 1.1.1.2 christos srel->size += sizeof (Elf32_External_Rela);
3082 1.1.1.2 christos h->needs_copy = 1;
3083 1.1.1.2 christos }
3084 1.1.1.2 christos
3085 1.1.1.2 christos return _bfd_elf_adjust_dynamic_copy (h, s);
3086 1.1.1.2 christos }
3087 1.1.1.2 christos
3088 1.1.1.2 christos /* Adjust our "subclass" elements for an indirect symbol. */
3089 1.1.1.2 christos
3090 1.1.1.2 christos static void
3091 1.1.1.2 christos elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3092 1.1.1.2 christos struct elf_link_hash_entry *dir,
3093 1.1.1.2 christos struct elf_link_hash_entry *ind)
3094 1.1.1.2 christos {
3095 1.1.1.2 christos struct elf_cris_link_hash_entry *edir, *eind;
3096 1.1.1.2 christos
3097 1.1.1.2 christos edir = (struct elf_cris_link_hash_entry *) dir;
3098 1.1.1.2 christos eind = (struct elf_cris_link_hash_entry *) ind;
3099 1.1.1.2 christos
3100 1.1.1.2 christos /* Only indirect symbols are replaced; we're not interested in
3101 1.1.1.2 christos updating any of EIND's fields for other symbols. */
3102 1.1.1.2 christos if (eind->root.root.type != bfd_link_hash_indirect)
3103 1.1.1.2 christos {
3104 1.1.1.2 christos /* Still, we need to copy flags for e.g. weak definitions. */
3105 1.1.1.2 christos _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3106 1.1.1.2 christos return;
3107 1.1.1.2 christos }
3108 1.1.1.2 christos
3109 1.1.1.2 christos BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3110 1.1.1.2 christos
3111 1.1.1.2 christos #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3112 1.1.1.2 christos #define XMOVE(F) XMOVOPZ (F, +=, 0)
3113 1.1.1.2 christos if (eind->pcrel_relocs_copied != NULL)
3114 1.1.1.2 christos {
3115 1.1.1.2 christos if (edir->pcrel_relocs_copied != NULL)
3116 1.1.1.2 christos {
3117 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied **pp;
3118 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *p;
3119 1.1.1.2 christos
3120 1.1.1.2 christos /* Add reloc counts against the indirect sym to the direct sym
3121 1.1.1.2 christos list. Merge any entries against the same section. */
3122 1.1.1.2 christos for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
3123 1.1.1.2 christos {
3124 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *q;
3125 1.1.1.2 christos p = *pp;
3126 1.1.1.2 christos for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
3127 1.1.1.2 christos if (q->section == p->section)
3128 1.1.1.2 christos {
3129 1.1.1.2 christos q->count += p->count;
3130 1.1.1.2 christos *pp = p->next;
3131 1.1.1.2 christos break;
3132 1.1.1.2 christos }
3133 1.1.1.2 christos if (q == NULL)
3134 1.1.1.2 christos pp = &p->next;
3135 1.1.1.2 christos }
3136 1.1.1.2 christos *pp = edir->pcrel_relocs_copied;
3137 1.1.1.2 christos }
3138 1.1.1.2 christos XMOVOPZ (pcrel_relocs_copied, =, NULL);
3139 1.1.1.2 christos }
3140 1.1.1.2 christos XMOVE (gotplt_refcount);
3141 1.1.1.2 christos XMOVE (gotplt_offset);
3142 1.1 skrll XMOVE (reg_got_refcount);
3143 1.1 skrll XMOVE (tprel_refcount);
3144 1.1 skrll XMOVE (dtp_refcount);
3145 1.1.1.2 christos #undef XMOVE
3146 1.1.1.2 christos #undef XMOVOPZ
3147 1.1.1.2 christos
3148 1.1.1.2 christos _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3149 1.1 skrll }
3150 1.1.1.2 christos
3151 1.1 skrll /* Look through the relocs for a section during the first phase. */
3152 1.1 skrll
3153 1.1 skrll static bfd_boolean
3154 1.1 skrll cris_elf_check_relocs (bfd *abfd,
3155 1.1 skrll struct bfd_link_info *info,
3156 1.1 skrll asection *sec,
3157 1.1 skrll const Elf_Internal_Rela *relocs)
3158 1.1 skrll {
3159 1.1 skrll struct elf_cris_link_hash_table * htab;
3160 1.1 skrll bfd *dynobj;
3161 1.1 skrll Elf_Internal_Shdr *symtab_hdr;
3162 1.1 skrll struct elf_link_hash_entry **sym_hashes;
3163 1.1 skrll bfd_signed_vma *local_got_refcounts;
3164 1.1.1.2 christos const Elf_Internal_Rela *rel;
3165 1.1.1.2 christos const Elf_Internal_Rela *rel_end;
3166 1.1.1.2 christos asection *sgot;
3167 1.1.1.2 christos asection *srelgot;
3168 1.1 skrll asection *sreloc;
3169 1.1 skrll
3170 1.1 skrll if (info->relocatable)
3171 1.1 skrll return TRUE;
3172 1.1 skrll
3173 1.1 skrll htab = elf_cris_hash_table (info);
3174 1.1 skrll if (htab == NULL)
3175 1.1 skrll return FALSE;
3176 1.1 skrll
3177 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
3178 1.1 skrll symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3179 1.1 skrll sym_hashes = elf_sym_hashes (abfd);
3180 1.1 skrll local_got_refcounts = elf_local_got_refcounts (abfd);
3181 1.1 skrll
3182 1.1 skrll sgot = NULL;
3183 1.1.1.2 christos srelgot = NULL;
3184 1.1.1.2 christos sreloc = NULL;
3185 1.1 skrll
3186 1.1 skrll rel_end = relocs + sec->reloc_count;
3187 1.1 skrll for (rel = relocs; rel < rel_end; rel++)
3188 1.1.1.2 christos {
3189 1.1.1.2 christos struct elf_link_hash_entry *h;
3190 1.1.1.2 christos unsigned long r_symndx;
3191 1.1.1.2 christos enum elf_cris_reloc_type r_type;
3192 1.1 skrll bfd_signed_vma got_element_size = 4;
3193 1.1 skrll unsigned long r_symndx_lgot = INT_MAX;
3194 1.1 skrll
3195 1.1 skrll r_symndx = ELF32_R_SYM (rel->r_info);
3196 1.1 skrll if (r_symndx < symtab_hdr->sh_info)
3197 1.1 skrll {
3198 1.1 skrll h = NULL;
3199 1.1 skrll r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3200 1.1 skrll }
3201 1.1 skrll else
3202 1.1 skrll {
3203 1.1 skrll h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3204 1.1 skrll while (h->root.type == bfd_link_hash_indirect
3205 1.1 skrll || h->root.type == bfd_link_hash_warning)
3206 1.1.1.2 christos h = (struct elf_link_hash_entry *) h->root.u.i.link;
3207 1.1.1.2 christos }
3208 1.1.1.2 christos
3209 1.1.1.2 christos r_type = ELF32_R_TYPE (rel->r_info);
3210 1.1.1.2 christos
3211 1.1.1.2 christos /* Some relocs require linker-created sections; we need to hang them
3212 1.1.1.2 christos on the first input bfd we found that contained dynamic relocs. */
3213 1.1.1.2 christos switch (r_type)
3214 1.1.1.2 christos {
3215 1.1.1.2 christos case R_CRIS_32_DTPREL:
3216 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
3217 1.1.1.2 christos /* This'd be a .dtpreld entry in e.g. debug info. We have
3218 1.1.1.2 christos several different switch statements below, but none of
3219 1.1.1.2 christos that is needed; we need no preparations for resolving
3220 1.1.1.2 christos R_CRIS_32_DTPREL into a non-allocated section (debug
3221 1.1.1.2 christos info), so let's just move on to the next
3222 1.1.1.2 christos relocation. */
3223 1.1.1.2 christos continue;
3224 1.1.1.2 christos /* Fall through. */
3225 1.1.1.2 christos case R_CRIS_16_DTPREL:
3226 1.1.1.2 christos /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3227 1.1.1.2 christos entry at index 3. */
3228 1.1.1.2 christos if (htab->dtpmod_refcount == 0)
3229 1.1.1.2 christos htab->next_gotplt_entry += 8;
3230 1.1.1.2 christos
3231 1.1 skrll htab->dtpmod_refcount++;
3232 1.1 skrll /* Fall through. */
3233 1.1 skrll
3234 1.1 skrll case R_CRIS_32_IE:
3235 1.1 skrll case R_CRIS_32_GD:
3236 1.1 skrll case R_CRIS_16_GOT_GD:
3237 1.1 skrll case R_CRIS_32_GOT_GD:
3238 1.1 skrll case R_CRIS_32_GOT_TPREL:
3239 1.1 skrll case R_CRIS_16_GOT_TPREL:
3240 1.1 skrll case R_CRIS_16_GOT:
3241 1.1 skrll case R_CRIS_32_GOT:
3242 1.1 skrll case R_CRIS_32_GOTREL:
3243 1.1 skrll case R_CRIS_32_PLT_GOTREL:
3244 1.1 skrll case R_CRIS_32_PLT_PCREL:
3245 1.1 skrll case R_CRIS_16_GOTPLT:
3246 1.1 skrll case R_CRIS_32_GOTPLT:
3247 1.1 skrll if (dynobj == NULL)
3248 1.1 skrll {
3249 1.1 skrll elf_hash_table (info)->dynobj = dynobj = abfd;
3250 1.1 skrll
3251 1.1 skrll /* We could handle this if we can get a handle on the
3252 1.1 skrll output bfd in elf_cris_adjust_dynamic_symbol. Failing
3253 1.1 skrll that, we must insist on dynobj being a specific mach. */
3254 1.1 skrll if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3255 1.1 skrll {
3256 1.1 skrll (*_bfd_error_handler)
3257 1.1 skrll (_("%B, section %A:\n v10/v32 compatible object %s"
3258 1.1 skrll " must not contain a PIC relocation"),
3259 1.1.1.2 christos abfd, sec);
3260 1.1.1.2 christos return FALSE;
3261 1.1.1.2 christos }
3262 1.1.1.2 christos
3263 1.1.1.2 christos /* Create the .got section, so we can assume it's always
3264 1.1.1.2 christos present whenever there's a dynobj. */
3265 1.1.1.2 christos if (!_bfd_elf_create_got_section (dynobj, info))
3266 1.1.1.2 christos return FALSE;
3267 1.1.1.2 christos }
3268 1.1.1.2 christos
3269 1.1.1.2 christos if (sgot == NULL)
3270 1.1.1.2 christos sgot = bfd_get_section_by_name (dynobj, ".got");
3271 1.1.1.2 christos
3272 1.1.1.2 christos if (local_got_refcounts == NULL)
3273 1.1.1.2 christos {
3274 1.1.1.2 christos bfd_size_type amt;
3275 1.1.1.2 christos
3276 1.1.1.2 christos /* We use index local_got_refcounts[-1] to count all
3277 1.1.1.2 christos GOT-relative relocations that do not have explicit
3278 1.1.1.2 christos GOT entries. */
3279 1.1 skrll amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3280 1.1 skrll amt *= sizeof (bfd_signed_vma);
3281 1.1 skrll local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3282 1.1 skrll if (local_got_refcounts == NULL)
3283 1.1 skrll return FALSE;
3284 1.1 skrll
3285 1.1 skrll local_got_refcounts++;
3286 1.1 skrll elf_local_got_refcounts (abfd) = local_got_refcounts;
3287 1.1 skrll }
3288 1.1 skrll break;
3289 1.1.1.2 christos
3290 1.1.1.2 christos default:
3291 1.1.1.2 christos break;
3292 1.1.1.2 christos }
3293 1.1.1.2 christos
3294 1.1.1.2 christos /* Some relocs require a global offset table (but perhaps not a
3295 1.1.1.2 christos specific GOT entry). */
3296 1.1.1.2 christos switch (r_type)
3297 1.1.1.2 christos {
3298 1.1.1.2 christos case R_CRIS_16_DTPREL:
3299 1.1.1.2 christos case R_CRIS_32_DTPREL:
3300 1.1.1.2 christos /* Not requesting .got.rela for an executable: the contents
3301 1.1.1.2 christos of the first entry is constant there. For a shared
3302 1.1.1.2 christos library, we need .got.rela for the R_CRIS_DTPMOD
3303 1.1.1.2 christos relocation at index 3. */
3304 1.1.1.2 christos if (!info->shared)
3305 1.1.1.2 christos break;
3306 1.1.1.2 christos /* Fall through. */
3307 1.1 skrll
3308 1.1 skrll case R_CRIS_32_IE:
3309 1.1 skrll case R_CRIS_32_GD:
3310 1.1 skrll case R_CRIS_16_GOT_GD:
3311 1.1 skrll case R_CRIS_32_GOT_GD:
3312 1.1 skrll case R_CRIS_32_GOT_TPREL:
3313 1.1 skrll case R_CRIS_16_GOT_TPREL:
3314 1.1 skrll /* Fall through. */
3315 1.1 skrll
3316 1.1 skrll /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3317 1.1 skrll entry only for local symbols. Unfortunately, we don't know
3318 1.1 skrll until later on if there's a version script that forces the
3319 1.1 skrll symbol local. We must have the .rela.got section in place
3320 1.1 skrll before we know if the symbol looks global now, so we need
3321 1.1 skrll to treat the reloc just like for R_CRIS_16_GOT and
3322 1.1 skrll R_CRIS_32_GOT. */
3323 1.1 skrll case R_CRIS_16_GOTPLT:
3324 1.1 skrll case R_CRIS_32_GOTPLT:
3325 1.1 skrll case R_CRIS_16_GOT:
3326 1.1 skrll case R_CRIS_32_GOT:
3327 1.1 skrll if (srelgot == NULL
3328 1.1 skrll && (h != NULL || info->shared))
3329 1.1 skrll {
3330 1.1 skrll srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3331 1.1 skrll if (srelgot == NULL)
3332 1.1 skrll {
3333 1.1 skrll srelgot = bfd_make_section_with_flags (dynobj,
3334 1.1 skrll ".rela.got",
3335 1.1 skrll (SEC_ALLOC
3336 1.1 skrll | SEC_LOAD
3337 1.1.1.2 christos | SEC_HAS_CONTENTS
3338 1.1 skrll | SEC_IN_MEMORY
3339 1.1.1.2 christos | SEC_LINKER_CREATED
3340 1.1.1.2 christos | SEC_READONLY));
3341 1.1.1.2 christos if (srelgot == NULL
3342 1.1 skrll || !bfd_set_section_alignment (dynobj, srelgot, 2))
3343 1.1.1.2 christos return FALSE;
3344 1.1.1.2 christos }
3345 1.1.1.2 christos }
3346 1.1.1.2 christos break;
3347 1.1.1.2 christos
3348 1.1.1.2 christos default:
3349 1.1.1.2 christos break;
3350 1.1.1.2 christos }
3351 1.1 skrll
3352 1.1.1.2 christos /* Warn and error for invalid input. */
3353 1.1.1.2 christos switch (r_type)
3354 1.1.1.2 christos {
3355 1.1.1.2 christos case R_CRIS_32_IE:
3356 1.1.1.2 christos case R_CRIS_32_TPREL:
3357 1.1.1.2 christos case R_CRIS_16_TPREL:
3358 1.1.1.2 christos case R_CRIS_32_GD:
3359 1.1.1.2 christos if (info->shared)
3360 1.1.1.2 christos {
3361 1.1.1.2 christos (*_bfd_error_handler)
3362 1.1.1.2 christos (_("%B, section %A:\n relocation %s not valid"
3363 1.1.1.2 christos " in a shared object;"
3364 1.1.1.2 christos " typically an option mixup, recompile with -fPIC"),
3365 1.1.1.2 christos abfd,
3366 1.1 skrll sec,
3367 1.1.1.2 christos cris_elf_howto_table[r_type].name);
3368 1.1.1.2 christos /* Don't return FALSE here; we want messages for all of
3369 1.1.1.2 christos these and the error behavior is ungraceful
3370 1.1.1.2 christos anyway. */
3371 1.1.1.2 christos }
3372 1.1.1.2 christos default:
3373 1.1.1.2 christos break;
3374 1.1.1.2 christos }
3375 1.1.1.2 christos
3376 1.1 skrll switch (r_type)
3377 1.1.1.2 christos {
3378 1.1.1.2 christos case R_CRIS_32_GD:
3379 1.1.1.2 christos case R_CRIS_16_GOT_GD:
3380 1.1.1.2 christos case R_CRIS_32_GOT_GD:
3381 1.1.1.2 christos /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3382 1.1.1.2 christos got_element_size = 8;
3383 1.1.1.2 christos r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3384 1.1.1.2 christos break;
3385 1.1.1.2 christos
3386 1.1.1.2 christos case R_CRIS_16_DTPREL:
3387 1.1.1.2 christos case R_CRIS_32_DTPREL:
3388 1.1.1.2 christos /* These two just request for the constant-index
3389 1.1.1.2 christos module-local tls_index-sized GOT entry, which we add
3390 1.1.1.2 christos elsewhere. */
3391 1.1.1.2 christos break;
3392 1.1.1.2 christos
3393 1.1.1.2 christos case R_CRIS_32_IE:
3394 1.1 skrll case R_CRIS_32_GOT_TPREL:
3395 1.1 skrll case R_CRIS_16_GOT_TPREL:
3396 1.1.1.2 christos r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3397 1.1.1.2 christos
3398 1.1.1.2 christos /* Those relocs also require that a DSO is of type
3399 1.1.1.2 christos Initial Exec. Like other targets, we don't reset this
3400 1.1 skrll flag even if the relocs are GC:ed away. */
3401 1.1 skrll if (info->shared)
3402 1.1 skrll info->flags |= DF_STATIC_TLS;
3403 1.1 skrll break;
3404 1.1 skrll
3405 1.1 skrll /* Let's list the other assembler-generated TLS-relocs too,
3406 1.1 skrll just to show that they're not forgotten. */
3407 1.1 skrll case R_CRIS_16_TPREL:
3408 1.1 skrll case R_CRIS_32_TPREL:
3409 1.1 skrll default:
3410 1.1 skrll break;
3411 1.1 skrll }
3412 1.1 skrll
3413 1.1.1.2 christos switch (r_type)
3414 1.1 skrll {
3415 1.1 skrll case R_CRIS_16_GOTPLT:
3416 1.1 skrll case R_CRIS_32_GOTPLT:
3417 1.1 skrll /* Mark that we need a GOT entry if the PLT entry (and its GOT
3418 1.1 skrll entry) is eliminated. We can only do this for a non-local
3419 1.1 skrll symbol. */
3420 1.1.1.2 christos if (h != NULL)
3421 1.1.1.2 christos {
3422 1.1.1.2 christos elf_cris_hash_entry (h)->gotplt_refcount++;
3423 1.1.1.2 christos goto handle_gotplt_reloc;
3424 1.1.1.2 christos }
3425 1.1.1.2 christos /* If h is NULL then this is a local symbol, and we must make a
3426 1.1 skrll GOT entry for it, so handle it like a GOT reloc. */
3427 1.1 skrll /* Fall through. */
3428 1.1 skrll
3429 1.1 skrll case R_CRIS_32_IE:
3430 1.1 skrll case R_CRIS_32_GD:
3431 1.1 skrll case R_CRIS_16_GOT_GD:
3432 1.1 skrll case R_CRIS_32_GOT_GD:
3433 1.1 skrll case R_CRIS_32_GOT_TPREL:
3434 1.1 skrll case R_CRIS_16_GOT_TPREL:
3435 1.1 skrll case R_CRIS_16_GOT:
3436 1.1 skrll case R_CRIS_32_GOT:
3437 1.1 skrll /* This symbol requires a global offset table entry. */
3438 1.1 skrll if (h != NULL)
3439 1.1 skrll {
3440 1.1.1.2 christos if (h->got.refcount == 0)
3441 1.1.1.2 christos {
3442 1.1 skrll /* Make sure this symbol is output as a dynamic symbol. */
3443 1.1.1.2 christos if (h->dynindx == -1)
3444 1.1.1.2 christos {
3445 1.1.1.2 christos if (!bfd_elf_link_record_dynamic_symbol (info, h))
3446 1.1.1.2 christos return FALSE;
3447 1.1.1.2 christos }
3448 1.1.1.2 christos }
3449 1.1.1.2 christos
3450 1.1.1.2 christos /* Update the sum of reloc counts for this symbol. */
3451 1.1.1.2 christos h->got.refcount++;
3452 1.1.1.2 christos
3453 1.1.1.2 christos switch (r_type)
3454 1.1.1.2 christos {
3455 1.1.1.2 christos case R_CRIS_16_GOT:
3456 1.1.1.2 christos case R_CRIS_32_GOT:
3457 1.1.1.2 christos if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3458 1.1.1.2 christos {
3459 1.1.1.2 christos /* Allocate space in the .got section. */
3460 1.1.1.2 christos sgot->size += got_element_size;
3461 1.1.1.2 christos /* Allocate relocation space. */
3462 1.1.1.2 christos srelgot->size += sizeof (Elf32_External_Rela);
3463 1.1.1.2 christos }
3464 1.1.1.2 christos elf_cris_hash_entry (h)->reg_got_refcount++;
3465 1.1.1.2 christos break;
3466 1.1.1.2 christos
3467 1.1.1.2 christos case R_CRIS_32_GD:
3468 1.1.1.2 christos case R_CRIS_16_GOT_GD:
3469 1.1.1.2 christos case R_CRIS_32_GOT_GD:
3470 1.1.1.2 christos if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3471 1.1.1.2 christos {
3472 1.1.1.2 christos /* Allocate space in the .got section. */
3473 1.1.1.2 christos sgot->size += got_element_size;
3474 1.1.1.2 christos /* Allocate relocation space. */
3475 1.1.1.2 christos srelgot->size += sizeof (Elf32_External_Rela);
3476 1.1.1.2 christos }
3477 1.1.1.2 christos elf_cris_hash_entry (h)->dtp_refcount++;
3478 1.1.1.2 christos break;
3479 1.1.1.2 christos
3480 1.1.1.2 christos case R_CRIS_32_IE:
3481 1.1.1.2 christos case R_CRIS_32_GOT_TPREL:
3482 1.1.1.2 christos case R_CRIS_16_GOT_TPREL:
3483 1.1.1.2 christos if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3484 1.1.1.2 christos {
3485 1.1.1.2 christos /* Allocate space in the .got section. */
3486 1.1.1.2 christos sgot->size += got_element_size;
3487 1.1.1.2 christos /* Allocate relocation space. */
3488 1.1 skrll srelgot->size += sizeof (Elf32_External_Rela);
3489 1.1 skrll }
3490 1.1 skrll elf_cris_hash_entry (h)->tprel_refcount++;
3491 1.1 skrll break;
3492 1.1.1.2 christos
3493 1.1 skrll default:
3494 1.1.1.2 christos BFD_FAIL ();
3495 1.1 skrll break;
3496 1.1 skrll }
3497 1.1.1.2 christos }
3498 1.1.1.2 christos else
3499 1.1.1.2 christos {
3500 1.1.1.2 christos /* This is a global offset table entry for a local symbol. */
3501 1.1 skrll if (local_got_refcounts[r_symndx_lgot] == 0)
3502 1.1 skrll {
3503 1.1 skrll sgot->size += got_element_size;
3504 1.1.1.2 christos if (info->shared)
3505 1.1.1.2 christos {
3506 1.1.1.2 christos /* If we are generating a shared object, we need
3507 1.1.1.2 christos to output a R_CRIS_RELATIVE reloc so that the
3508 1.1 skrll dynamic linker can adjust this GOT entry.
3509 1.1 skrll Similarly for non-regular got entries. */
3510 1.1 skrll srelgot->size += sizeof (Elf32_External_Rela);
3511 1.1 skrll }
3512 1.1.1.2 christos }
3513 1.1.1.2 christos /* Update the reloc-specific count. */
3514 1.1 skrll local_got_refcounts[r_symndx_lgot]++;
3515 1.1 skrll
3516 1.1 skrll /* This one is the sum of all the others. */
3517 1.1 skrll local_got_refcounts[r_symndx]++;
3518 1.1 skrll }
3519 1.1 skrll break;
3520 1.1 skrll
3521 1.1 skrll case R_CRIS_16_DTPREL:
3522 1.1 skrll case R_CRIS_32_DTPREL:
3523 1.1 skrll case R_CRIS_32_GOTREL:
3524 1.1 skrll /* This reference requires a global offset table.
3525 1.1 skrll FIXME: The actual refcount isn't used currently; the .got
3526 1.1 skrll section can't be removed if there were any references in the
3527 1.1 skrll input. */
3528 1.1 skrll local_got_refcounts[-1]++;
3529 1.1 skrll break;
3530 1.1 skrll
3531 1.1 skrll handle_gotplt_reloc:
3532 1.1 skrll
3533 1.1 skrll case R_CRIS_32_PLT_GOTREL:
3534 1.1 skrll /* This reference requires a global offset table. */
3535 1.1 skrll local_got_refcounts[-1]++;
3536 1.1 skrll /* Fall through. */
3537 1.1 skrll
3538 1.1 skrll case R_CRIS_32_PLT_PCREL:
3539 1.1 skrll /* This symbol requires a procedure linkage table entry. We
3540 1.1 skrll actually build the entry in adjust_dynamic_symbol,
3541 1.1 skrll because this might be a case of linking PIC code which is
3542 1.1 skrll never referenced by a dynamic object, in which case we
3543 1.1 skrll don't need to generate a procedure linkage table entry
3544 1.1 skrll after all. */
3545 1.1 skrll
3546 1.1 skrll /* Beware: if we'd check for visibility of the symbol here
3547 1.1 skrll (and not marking the need for a PLT when non-visible), we'd
3548 1.1 skrll get into trouble with keeping handling consistent with
3549 1.1 skrll regards to relocs found before definition and GOTPLT
3550 1.1 skrll handling. Eliminable PLT entries will be dealt with later
3551 1.1 skrll anyway. */
3552 1.1 skrll if (h == NULL)
3553 1.1 skrll continue;
3554 1.1.1.2 christos
3555 1.1.1.2 christos h->needs_plt = 1;
3556 1.1.1.2 christos h->plt.refcount++;
3557 1.1.1.2 christos break;
3558 1.1.1.2 christos
3559 1.1.1.2 christos case R_CRIS_8:
3560 1.1.1.2 christos case R_CRIS_16:
3561 1.1 skrll case R_CRIS_32:
3562 1.1 skrll /* Let's help debug shared library creation. Any of these
3563 1.1 skrll relocs *can* be used in shared libs, but pages containing
3564 1.1 skrll them cannot be shared, so they're not appropriate for
3565 1.1 skrll common use. Don't warn for sections we don't care about,
3566 1.1 skrll such as debug sections or non-constant sections. We
3567 1.1 skrll can't help tables of (global) function pointers, for
3568 1.1 skrll example, though they must be emitted in a (writable) data
3569 1.1 skrll section to avoid having impure text sections. */
3570 1.1 skrll if (info->shared
3571 1.1 skrll && (sec->flags & SEC_ALLOC) != 0
3572 1.1 skrll && (sec->flags & SEC_READONLY) != 0)
3573 1.1.1.2 christos {
3574 1.1.1.2 christos /* FIXME: How do we make this optionally a warning only? */
3575 1.1.1.2 christos (*_bfd_error_handler)
3576 1.1.1.2 christos (_("%B, section %A:\n relocation %s should not"
3577 1.1.1.2 christos " be used in a shared object; recompile with -fPIC"),
3578 1.1.1.2 christos abfd,
3579 1.1.1.2 christos sec,
3580 1.1.1.2 christos cris_elf_howto_table[r_type].name);
3581 1.1.1.2 christos }
3582 1.1.1.2 christos if (h != NULL)
3583 1.1.1.2 christos {
3584 1.1.1.2 christos h->non_got_ref = 1;
3585 1.1.1.2 christos
3586 1.1.1.2 christos /* Make sure a plt entry is created for this symbol if it
3587 1.1.1.2 christos turns out to be a function defined by a dynamic object. */
3588 1.1.1.2 christos if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3589 1.1.1.2 christos h->plt.refcount++;
3590 1.1.1.2 christos }
3591 1.1.1.2 christos
3592 1.1.1.2 christos /* If we are creating a shared library and this is not a local
3593 1.1.1.2 christos symbol, we need to copy the reloc into the shared library.
3594 1.1.1.2 christos However when linking with -Bsymbolic and this is a global
3595 1.1.1.2 christos symbol which is defined in an object we are including in the
3596 1.1.1.2 christos link (i.e., DEF_REGULAR is set), then we can resolve the
3597 1.1.1.2 christos reloc directly. At this point we have not seen all the input
3598 1.1.1.2 christos files, so it is possible that DEF_REGULAR is not set now but
3599 1.1.1.2 christos will be set later (it is never cleared). In case of a weak
3600 1.1.1.2 christos definition, DEF_REGULAR may be cleared later by a strong
3601 1.1.1.2 christos definition in a shared library. We account for that
3602 1.1.1.2 christos possibility below by storing information in the relocs_copied
3603 1.1.1.2 christos field of the hash table entry. A similar situation occurs
3604 1.1.1.2 christos when creating shared libraries and symbol visibility changes
3605 1.1.1.2 christos render the symbol local. */
3606 1.1.1.2 christos
3607 1.1.1.2 christos /* No need to do anything if we're not creating a shared object. */
3608 1.1.1.2 christos if (! info->shared)
3609 1.1.1.2 christos break;
3610 1.1.1.2 christos
3611 1.1.1.2 christos /* We don't need to handle relocs into sections not going into
3612 1.1.1.2 christos the "real" output. */
3613 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
3614 1.1.1.2 christos break;
3615 1.1.1.2 christos
3616 1.1.1.2 christos /* We may need to create a reloc section in the dynobj and made room
3617 1.1.1.2 christos for this reloc. */
3618 1.1.1.2 christos if (sreloc == NULL)
3619 1.1.1.2 christos {
3620 1.1.1.2 christos sreloc = _bfd_elf_make_dynamic_reloc_section
3621 1.1.1.2 christos (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3622 1.1.1.2 christos
3623 1.1 skrll if (sreloc == NULL)
3624 1.1 skrll return FALSE;
3625 1.1 skrll }
3626 1.1 skrll
3627 1.1 skrll if (sec->flags & SEC_READONLY)
3628 1.1 skrll info->flags |= DF_TEXTREL;
3629 1.1 skrll
3630 1.1 skrll sreloc->size += sizeof (Elf32_External_Rela);
3631 1.1 skrll break;
3632 1.1 skrll
3633 1.1 skrll case R_CRIS_8_PCREL:
3634 1.1 skrll case R_CRIS_16_PCREL:
3635 1.1 skrll case R_CRIS_32_PCREL:
3636 1.1 skrll if (h != NULL)
3637 1.1 skrll {
3638 1.1 skrll h->non_got_ref = 1;
3639 1.1 skrll
3640 1.1 skrll /* Make sure a plt entry is created for this symbol if it
3641 1.1 skrll turns out to be a function defined by a dynamic object. */
3642 1.1 skrll if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3643 1.1 skrll h->plt.refcount++;
3644 1.1 skrll }
3645 1.1 skrll
3646 1.1 skrll /* If we are creating a shared library and this is not a local
3647 1.1 skrll symbol, we need to copy the reloc into the shared library.
3648 1.1 skrll However when linking with -Bsymbolic and this is a global
3649 1.1 skrll symbol which is defined in an object we are including in the
3650 1.1 skrll link (i.e., DEF_REGULAR is set), then we can resolve the
3651 1.1 skrll reloc directly. At this point we have not seen all the input
3652 1.1 skrll files, so it is possible that DEF_REGULAR is not set now but
3653 1.1 skrll will be set later (it is never cleared). In case of a weak
3654 1.1 skrll definition, DEF_REGULAR may be cleared later by a strong
3655 1.1 skrll definition in a shared library. We account for that
3656 1.1 skrll possibility below by storing information in the relocs_copied
3657 1.1 skrll field of the hash table entry. A similar situation occurs
3658 1.1 skrll when creating shared libraries and symbol visibility changes
3659 1.1 skrll render the symbol local. */
3660 1.1 skrll
3661 1.1.1.2 christos /* No need to do anything if we're not creating a shared object. */
3662 1.1.1.2 christos if (! info->shared)
3663 1.1.1.2 christos break;
3664 1.1.1.2 christos
3665 1.1 skrll /* We don't need to handle relocs into sections not going into
3666 1.1.1.2 christos the "real" output. */
3667 1.1.1.2 christos if ((sec->flags & SEC_ALLOC) == 0)
3668 1.1.1.2 christos break;
3669 1.1.1.2 christos
3670 1.1.1.2 christos /* If the symbol is local, then we know already we can
3671 1.1.1.2 christos eliminate the reloc. */
3672 1.1.1.2 christos if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3673 1.1.1.2 christos break;
3674 1.1.1.2 christos
3675 1.1 skrll /* If this is with -Bsymbolic and the symbol isn't weak, and
3676 1.1.1.2 christos is defined by an ordinary object (the ones we include in
3677 1.1.1.2 christos this shared library) then we can also eliminate the
3678 1.1 skrll reloc. See comment above for more eliminable cases which
3679 1.1 skrll we can't identify at this time. */
3680 1.1.1.2 christos if (info->symbolic
3681 1.1.1.2 christos && h->root.type != bfd_link_hash_defweak
3682 1.1 skrll && h->def_regular)
3683 1.1 skrll break;
3684 1.1.1.2 christos
3685 1.1 skrll /* We may need to create a reloc section in the dynobj and made room
3686 1.1 skrll for this reloc. */
3687 1.1 skrll if (sreloc == NULL)
3688 1.1 skrll {
3689 1.1.1.2 christos sreloc = _bfd_elf_make_dynamic_reloc_section
3690 1.1.1.2 christos (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3691 1.1.1.2 christos
3692 1.1.1.2 christos if (sreloc == NULL)
3693 1.1 skrll return FALSE;
3694 1.1.1.2 christos }
3695 1.1.1.2 christos
3696 1.1.1.2 christos sreloc->size += sizeof (Elf32_External_Rela);
3697 1.1 skrll
3698 1.1.1.2 christos /* We count the number of PC relative relocations we have
3699 1.1 skrll entered for this symbol, so that we can discard them
3700 1.1.1.2 christos again if the symbol is later defined by a regular object.
3701 1.1.1.2 christos We know that h is really a pointer to an
3702 1.1.1.2 christos elf_cris_link_hash_entry. */
3703 1.1 skrll {
3704 1.1.1.2 christos struct elf_cris_link_hash_entry *eh;
3705 1.1.1.2 christos struct elf_cris_pcrel_relocs_copied *p;
3706 1.1.1.2 christos
3707 1.1.1.2 christos eh = elf_cris_hash_entry (h);
3708 1.1.1.2 christos
3709 1.1.1.2 christos for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3710 1.1.1.2 christos if (p->section == sec)
3711 1.1.1.2 christos break;
3712 1.1.1.2 christos
3713 1.1.1.2 christos if (p == NULL)
3714 1.1.1.2 christos {
3715 1.1.1.2 christos p = ((struct elf_cris_pcrel_relocs_copied *)
3716 1.1 skrll bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3717 1.1.1.2 christos if (p == NULL)
3718 1.1.1.2 christos return FALSE;
3719 1.1 skrll p->next = eh->pcrel_relocs_copied;
3720 1.1 skrll eh->pcrel_relocs_copied = p;
3721 1.1 skrll p->section = sec;
3722 1.1 skrll p->count = 0;
3723 1.1 skrll p->r_type = r_type;
3724 1.1 skrll }
3725 1.1 skrll
3726 1.1 skrll ++p->count;
3727 1.1 skrll }
3728 1.1 skrll break;
3729 1.1 skrll
3730 1.1 skrll /* This relocation describes the C++ object vtable hierarchy.
3731 1.1 skrll Reconstruct it for later use during GC. */
3732 1.1 skrll case R_CRIS_GNU_VTINHERIT:
3733 1.1 skrll if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3734 1.1 skrll return FALSE;
3735 1.1 skrll break;
3736 1.1 skrll
3737 1.1.1.2 christos /* This relocation describes which C++ vtable entries are actually
3738 1.1.1.2 christos used. Record for later use during GC. */
3739 1.1.1.2 christos case R_CRIS_GNU_VTENTRY:
3740 1.1.1.2 christos BFD_ASSERT (h != NULL);
3741 1.1.1.2 christos if (h != NULL
3742 1.1 skrll && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3743 1.1 skrll return FALSE;
3744 1.1 skrll break;
3745 1.1 skrll
3746 1.1 skrll case R_CRIS_16_TPREL:
3747 1.1 skrll case R_CRIS_32_TPREL:
3748 1.1 skrll /* Already warned above, when necessary. */
3749 1.1 skrll break;
3750 1.1 skrll
3751 1.1 skrll default:
3752 1.1 skrll /* Other relocs do not appear here. */
3753 1.1 skrll bfd_set_error (bfd_error_bad_value);
3754 1.1 skrll return FALSE;
3755 1.1.1.2 christos }
3756 1.1.1.2 christos }
3757 1.1 skrll
3758 1.1.1.2 christos return TRUE;
3759 1.1 skrll }
3760 1.1 skrll
3761 1.1 skrll /* Set the sizes of the dynamic sections. */
3762 1.1 skrll
3763 1.1 skrll static bfd_boolean
3764 1.1.1.2 christos elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3765 1.1.1.2 christos struct bfd_link_info *info)
3766 1.1.1.2 christos {
3767 1.1.1.2 christos struct elf_cris_link_hash_table * htab;
3768 1.1 skrll bfd *dynobj;
3769 1.1 skrll asection *s;
3770 1.1 skrll bfd_boolean plt;
3771 1.1 skrll bfd_boolean relocs;
3772 1.1 skrll
3773 1.1 skrll htab = elf_cris_hash_table (info);
3774 1.1 skrll if (htab == NULL)
3775 1.1 skrll return FALSE;
3776 1.1 skrll
3777 1.1 skrll dynobj = elf_hash_table (info)->dynobj;
3778 1.1 skrll BFD_ASSERT (dynobj != NULL);
3779 1.1 skrll
3780 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
3781 1.1 skrll {
3782 1.1 skrll /* Set the contents of the .interp section to the interpreter. */
3783 1.1 skrll if (info->executable)
3784 1.1 skrll {
3785 1.1.1.2 christos s = bfd_get_section_by_name (dynobj, ".interp");
3786 1.1.1.2 christos BFD_ASSERT (s != NULL);
3787 1.1 skrll s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3788 1.1 skrll s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3789 1.1 skrll }
3790 1.1 skrll }
3791 1.1 skrll else
3792 1.1 skrll {
3793 1.1 skrll /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3794 1.1 skrll elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3795 1.1 skrll info);
3796 1.1 skrll
3797 1.1 skrll /* We may have created entries in the .rela.got section.
3798 1.1 skrll However, if we are not creating the dynamic sections, we will
3799 1.1 skrll not actually use these entries. Reset the size of .rela.got,
3800 1.1 skrll which will cause it to get stripped from the output file
3801 1.1 skrll below. */
3802 1.1 skrll s = bfd_get_section_by_name (dynobj, ".rela.got");
3803 1.1 skrll if (s != NULL)
3804 1.1 skrll s->size = 0;
3805 1.1 skrll }
3806 1.1.1.2 christos
3807 1.1 skrll /* If this is a -Bsymbolic shared link, then we need to discard all PC
3808 1.1.1.2 christos relative relocs against symbols defined in a regular object. We
3809 1.1 skrll allocated space for them in the check_relocs routine, but we will not
3810 1.1.1.2 christos fill them in in the relocate_section routine. We also discard space
3811 1.1 skrll for relocs that have become for local symbols due to symbol
3812 1.1.1.2 christos visibility changes. For programs, we discard space for relocs for
3813 1.1 skrll symbols not referenced by any dynamic object. */
3814 1.1 skrll if (info->shared)
3815 1.1 skrll elf_cris_link_hash_traverse (htab,
3816 1.1 skrll elf_cris_discard_excess_dso_dynamics,
3817 1.1 skrll info);
3818 1.1 skrll else
3819 1.1 skrll elf_cris_link_hash_traverse (htab,
3820 1.1 skrll elf_cris_discard_excess_program_dynamics,
3821 1.1 skrll info);
3822 1.1 skrll
3823 1.1 skrll /* The check_relocs and adjust_dynamic_symbol entry points have
3824 1.1 skrll determined the sizes of the various dynamic sections. Allocate
3825 1.1 skrll memory for them. */
3826 1.1 skrll plt = FALSE;
3827 1.1 skrll relocs = FALSE;
3828 1.1 skrll for (s = dynobj->sections; s != NULL; s = s->next)
3829 1.1 skrll {
3830 1.1 skrll const char *name;
3831 1.1 skrll
3832 1.1 skrll if ((s->flags & SEC_LINKER_CREATED) == 0)
3833 1.1 skrll continue;
3834 1.1 skrll
3835 1.1.1.2 christos /* It's OK to base decisions on the section name, because none
3836 1.1.1.2 christos of the dynobj section names depend upon the input files. */
3837 1.1.1.2 christos name = bfd_get_section_name (dynobj, s);
3838 1.1.1.2 christos
3839 1.1.1.2 christos if (strcmp (name, ".plt") == 0)
3840 1.1.1.2 christos {
3841 1.1.1.2 christos /* Remember whether there is a PLT. */
3842 1.1.1.2 christos plt = s->size != 0;
3843 1.1 skrll }
3844 1.1 skrll else if (strcmp (name, ".got.plt") == 0)
3845 1.1.1.2 christos {
3846 1.1.1.2 christos /* The .got.plt contains the .got header as well as the
3847 1.1.1.2 christos actual .got.plt contents. The .got header may contain a
3848 1.1.1.2 christos R_CRIS_DTPMOD entry at index 3. */
3849 1.1.1.2 christos s->size += htab->dtpmod_refcount != 0
3850 1.1 skrll ? 8 : 0;
3851 1.1 skrll }
3852 1.1 skrll else if (CONST_STRNEQ (name, ".rela"))
3853 1.1 skrll {
3854 1.1 skrll if (strcmp (name, ".rela.got") == 0
3855 1.1 skrll && htab->dtpmod_refcount != 0
3856 1.1 skrll && info->shared)
3857 1.1 skrll s->size += sizeof (Elf32_External_Rela);
3858 1.1 skrll
3859 1.1 skrll if (s->size != 0)
3860 1.1 skrll {
3861 1.1 skrll /* Remember whether there are any reloc sections other
3862 1.1 skrll than .rela.plt. */
3863 1.1 skrll if (strcmp (name, ".rela.plt") != 0)
3864 1.1 skrll relocs = TRUE;
3865 1.1 skrll
3866 1.1 skrll /* We use the reloc_count field as a counter if we need
3867 1.1 skrll to copy relocs into the output file. */
3868 1.1 skrll s->reloc_count = 0;
3869 1.1 skrll }
3870 1.1 skrll }
3871 1.1 skrll else if (! CONST_STRNEQ (name, ".got")
3872 1.1 skrll && strcmp (name, ".dynbss") != 0)
3873 1.1 skrll {
3874 1.1 skrll /* It's not one of our sections, so don't allocate space. */
3875 1.1 skrll continue;
3876 1.1 skrll }
3877 1.1 skrll
3878 1.1 skrll if (s->size == 0)
3879 1.1 skrll {
3880 1.1 skrll /* If we don't need this section, strip it from the
3881 1.1 skrll output file. This is mostly to handle .rela.bss and
3882 1.1 skrll .rela.plt. We must create both sections in
3883 1.1 skrll create_dynamic_sections, because they must be created
3884 1.1 skrll before the linker maps input sections to output
3885 1.1 skrll sections. The linker does that before
3886 1.1 skrll adjust_dynamic_symbol is called, and it is that
3887 1.1 skrll function which decides whether anything needs to go
3888 1.1 skrll into these sections. */
3889 1.1 skrll s->flags |= SEC_EXCLUDE;
3890 1.1 skrll continue;
3891 1.1 skrll }
3892 1.1 skrll
3893 1.1 skrll if ((s->flags & SEC_HAS_CONTENTS) == 0)
3894 1.1 skrll continue;
3895 1.1 skrll
3896 1.1 skrll /* Allocate memory for the section contents. We use bfd_zalloc here
3897 1.1 skrll in case unused entries are not reclaimed before the section's
3898 1.1 skrll contents are written out. This should not happen, but this way
3899 1.1 skrll if it does, we will not write out garbage. For reloc sections,
3900 1.1 skrll this will make entries have the type R_CRIS_NONE. */
3901 1.1 skrll s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3902 1.1 skrll if (s->contents == NULL)
3903 1.1 skrll return FALSE;
3904 1.1 skrll }
3905 1.1 skrll
3906 1.1 skrll if (elf_hash_table (info)->dynamic_sections_created)
3907 1.1 skrll {
3908 1.1 skrll /* Add some entries to the .dynamic section. We fill in the
3909 1.1 skrll values later, in elf_cris_finish_dynamic_sections, but we
3910 1.1 skrll must add the entries now so that we get the correct size for
3911 1.1 skrll the .dynamic section. The DT_DEBUG entry is filled in by the
3912 1.1 skrll dynamic linker and used by the debugger. */
3913 1.1 skrll #define add_dynamic_entry(TAG, VAL) \
3914 1.1 skrll _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3915 1.1 skrll
3916 1.1 skrll if (!info->shared)
3917 1.1 skrll {
3918 1.1 skrll if (!add_dynamic_entry (DT_DEBUG, 0))
3919 1.1 skrll return FALSE;
3920 1.1 skrll }
3921 1.1 skrll
3922 1.1 skrll if (plt)
3923 1.1 skrll {
3924 1.1 skrll if (!add_dynamic_entry (DT_PLTGOT, 0)
3925 1.1 skrll || !add_dynamic_entry (DT_PLTRELSZ, 0)
3926 1.1 skrll || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3927 1.1 skrll || !add_dynamic_entry (DT_JMPREL, 0))
3928 1.1 skrll return FALSE;
3929 1.1 skrll }
3930 1.1 skrll
3931 1.1 skrll if (relocs)
3932 1.1 skrll {
3933 1.1 skrll if (!add_dynamic_entry (DT_RELA, 0)
3934 1.1 skrll || !add_dynamic_entry (DT_RELASZ, 0)
3935 1.1 skrll || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3936 1.1 skrll return FALSE;
3937 1.1 skrll }
3938 1.1 skrll
3939 1.1 skrll if ((info->flags & DF_TEXTREL) != 0)
3940 1.1 skrll {
3941 1.1 skrll if (!add_dynamic_entry (DT_TEXTREL, 0))
3942 1.1 skrll return FALSE;
3943 1.1 skrll info->flags |= DF_TEXTREL;
3944 1.1 skrll }
3945 1.1 skrll }
3946 1.1 skrll #undef add_dynamic_entry
3947 1.1 skrll
3948 1.1 skrll return TRUE;
3949 1.1 skrll }
3950 1.1 skrll
3951 1.1 skrll /* This function is called via elf_cris_link_hash_traverse if we are
3952 1.1 skrll creating a shared object. In the -Bsymbolic case, it discards the
3953 1.1 skrll space allocated to copy PC relative relocs against symbols which
3954 1.1 skrll are defined in regular objects. For the normal non-symbolic case,
3955 1.1 skrll we also discard space for relocs that have become local due to
3956 1.1 skrll symbol visibility changes. We allocated space for them in the
3957 1.1 skrll check_relocs routine, but we won't fill them in in the
3958 1.1 skrll relocate_section routine. */
3959 1.1 skrll
3960 1.1 skrll static bfd_boolean
3961 1.1 skrll elf_cris_discard_excess_dso_dynamics (h, inf)
3962 1.1 skrll struct elf_cris_link_hash_entry *h;
3963 1.1 skrll PTR inf;
3964 1.1 skrll {
3965 1.1 skrll struct elf_cris_pcrel_relocs_copied *s;
3966 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) inf;
3967 1.1 skrll
3968 1.1 skrll if (h->root.root.type == bfd_link_hash_warning)
3969 1.1 skrll h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3970 1.1.1.2 christos
3971 1.1.1.2 christos /* If a symbol has been forced local or we have found a regular
3972 1.1.1.2 christos definition for the symbolic link case, then we won't be needing
3973 1.1.1.2 christos any relocs. */
3974 1.1.1.2 christos if (h->root.def_regular
3975 1.1.1.2 christos && (h->root.forced_local
3976 1.1.1.2 christos || info->symbolic))
3977 1.1.1.2 christos {
3978 1.1.1.2 christos for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3979 1.1 skrll {
3980 1.1 skrll asection *sreloc
3981 1.1.1.2 christos = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3982 1.1.1.2 christos ->dynobj,
3983 1.1.1.2 christos s->section,
3984 1.1.1.2 christos /*rela?*/ TRUE);
3985 1.1.1.2 christos sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3986 1.1.1.2 christos }
3987 1.1.1.2 christos return TRUE;
3988 1.1.1.2 christos }
3989 1.1.1.2 christos
3990 1.1.1.2 christos /* If we have accounted for PC-relative relocs for read-only
3991 1.1.1.2 christos sections, now is the time to warn for them. We can't do it in
3992 1.1.1.2 christos cris_elf_check_relocs, because we don't know the status of all
3993 1.1.1.2 christos symbols at that time (and it's common to force symbols local
3994 1.1.1.2 christos late). */
3995 1.1.1.2 christos
3996 1.1.1.2 christos for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3997 1.1.1.2 christos if ((s->section->flags & SEC_READONLY) != 0)
3998 1.1.1.2 christos {
3999 1.1.1.2 christos /* FIXME: How do we make this optionally a warning only? */
4000 1.1.1.2 christos (*_bfd_error_handler)
4001 1.1.1.2 christos (_("%B, section `%A', to symbol `%s':\n"
4002 1.1.1.2 christos " relocation %s should not be used"
4003 1.1 skrll " in a shared object; recompile with -fPIC"),
4004 1.1 skrll s->section->owner,
4005 1.1 skrll s->section,
4006 1.1 skrll h->root.root.root.string,
4007 1.1 skrll cris_elf_howto_table[s->r_type].name);
4008 1.1 skrll
4009 1.1 skrll info->flags |= DF_TEXTREL;
4010 1.1 skrll }
4011 1.1 skrll
4012 1.1 skrll return TRUE;
4013 1.1 skrll }
4014 1.1 skrll
4015 1.1 skrll /* This function is called via elf_cris_link_hash_traverse if we are *not*
4016 1.1 skrll creating a shared object. We discard space for relocs for symbols put
4017 1.1 skrll in the .got, but which we found we do not have to resolve at run-time. */
4018 1.1 skrll
4019 1.1 skrll static bfd_boolean
4020 1.1 skrll elf_cris_discard_excess_program_dynamics (h, inf)
4021 1.1 skrll struct elf_cris_link_hash_entry *h;
4022 1.1 skrll PTR inf;
4023 1.1 skrll {
4024 1.1 skrll struct bfd_link_info *info = (struct bfd_link_info *) inf;
4025 1.1 skrll
4026 1.1 skrll if (h->root.root.type == bfd_link_hash_warning)
4027 1.1 skrll h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
4028 1.1.1.2 christos
4029 1.1 skrll /* If we're not creating a shared library and have a symbol which is
4030 1.1 skrll referred to by .got references, but the symbol is defined locally,
4031 1.1 skrll (or rather, not defined by a DSO) then lose the reloc for the .got
4032 1.1 skrll (don't allocate room for it). Likewise for relocs for something
4033 1.1 skrll for which we create a PLT. */
4034 1.1 skrll if (!h->root.def_dynamic
4035 1.1 skrll || h->root.plt.refcount > 0)
4036 1.1 skrll {
4037 1.1 skrll if (h->reg_got_refcount > 0
4038 1.1 skrll /* The size of this section is only valid and in sync with the
4039 1.1 skrll various reference counts if we do dynamic; don't decrement it
4040 1.1 skrll otherwise. */
4041 1.1 skrll && elf_hash_table (info)->dynamic_sections_created)
4042 1.1 skrll {
4043 1.1 skrll bfd *dynobj = elf_hash_table (info)->dynobj;
4044 1.1 skrll asection *srelgot;
4045 1.1 skrll
4046 1.1 skrll BFD_ASSERT (dynobj != NULL);
4047 1.1 skrll
4048 1.1 skrll srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4049 1.1 skrll
4050 1.1 skrll BFD_ASSERT (srelgot != NULL);
4051 1.1 skrll
4052 1.1 skrll srelgot->size -= sizeof (Elf32_External_Rela);
4053 1.1 skrll }
4054 1.1 skrll
4055 1.1 skrll /* If the locally-defined symbol isn't used by a DSO, then we don't
4056 1.1 skrll have to export it as a dynamic symbol. This was already done for
4057 1.1 skrll functions; doing this for all symbols would presumably not
4058 1.1 skrll introduce new problems. Of course we don't do this if we're
4059 1.1 skrll exporting all dynamic symbols. */
4060 1.1 skrll if (! info->export_dynamic
4061 1.1 skrll && h->root.dynindx != -1
4062 1.1 skrll && !h->root.def_dynamic
4063 1.1 skrll && !h->root.ref_dynamic)
4064 1.1 skrll {
4065 1.1 skrll h->root.dynindx = -1;
4066 1.1 skrll _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4067 1.1 skrll h->root.dynstr_index);
4068 1.1 skrll }
4069 1.1 skrll }
4070 1.1 skrll
4071 1.1 skrll return TRUE;
4072 1.1 skrll }
4073 1.1 skrll
4074 1.1 skrll /* Reject a file depending on presence and expectation of prefixed
4075 1.1 skrll underscores on symbols. */
4076 1.1 skrll
4077 1.1 skrll static bfd_boolean
4078 1.1 skrll cris_elf_object_p (abfd)
4079 1.1 skrll bfd *abfd;
4080 1.1 skrll {
4081 1.1 skrll if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4082 1.1 skrll return FALSE;
4083 1.1 skrll
4084 1.1 skrll if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4085 1.1 skrll return (bfd_get_symbol_leading_char (abfd) == '_');
4086 1.1 skrll else
4087 1.1 skrll return (bfd_get_symbol_leading_char (abfd) == 0);
4088 1.1 skrll }
4089 1.1 skrll
4090 1.1 skrll /* Mark presence or absence of leading underscore. Set machine type
4091 1.1 skrll flags from mach type. */
4092 1.1 skrll
4093 1.1 skrll static void
4094 1.1 skrll cris_elf_final_write_processing (abfd, linker)
4095 1.1 skrll bfd *abfd;
4096 1.1 skrll bfd_boolean linker ATTRIBUTE_UNUSED;
4097 1.1 skrll {
4098 1.1 skrll unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4099 1.1 skrll
4100 1.1 skrll e_flags &= ~EF_CRIS_UNDERSCORE;
4101 1.1 skrll if (bfd_get_symbol_leading_char (abfd) == '_')
4102 1.1 skrll e_flags |= EF_CRIS_UNDERSCORE;
4103 1.1 skrll
4104 1.1 skrll switch (bfd_get_mach (abfd))
4105 1.1 skrll {
4106 1.1 skrll case bfd_mach_cris_v0_v10:
4107 1.1 skrll e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4108 1.1 skrll break;
4109 1.1 skrll
4110 1.1 skrll case bfd_mach_cris_v10_v32:
4111 1.1 skrll e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4112 1.1 skrll break;
4113 1.1 skrll
4114 1.1 skrll case bfd_mach_cris_v32:
4115 1.1 skrll e_flags |= EF_CRIS_VARIANT_V32;
4116 1.1 skrll break;
4117 1.1 skrll
4118 1.1 skrll default:
4119 1.1 skrll _bfd_abort (__FILE__, __LINE__,
4120 1.1 skrll _("Unexpected machine number"));
4121 1.1 skrll }
4122 1.1 skrll
4123 1.1 skrll elf_elfheader (abfd)->e_flags = e_flags;
4124 1.1 skrll }
4125 1.1 skrll
4126 1.1 skrll /* Set the mach type from e_flags value. */
4127 1.1 skrll
4128 1.1 skrll static bfd_boolean
4129 1.1 skrll cris_elf_set_mach_from_flags (abfd, flags)
4130 1.1 skrll bfd *abfd;
4131 1.1 skrll unsigned long flags;
4132 1.1 skrll {
4133 1.1 skrll switch (flags & EF_CRIS_VARIANT_MASK)
4134 1.1 skrll {
4135 1.1 skrll case EF_CRIS_VARIANT_ANY_V0_V10:
4136 1.1 skrll bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4137 1.1 skrll break;
4138 1.1 skrll
4139 1.1 skrll case EF_CRIS_VARIANT_V32:
4140 1.1 skrll bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4141 1.1 skrll break;
4142 1.1 skrll
4143 1.1 skrll case EF_CRIS_VARIANT_COMMON_V10_V32:
4144 1.1 skrll bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4145 1.1 skrll break;
4146 1.1 skrll
4147 1.1 skrll default:
4148 1.1 skrll /* Since we don't recognize them, we obviously can't support them
4149 1.1 skrll with this code; we'd have to require that all future handling
4150 1.1 skrll would be optional. */
4151 1.1 skrll bfd_set_error (bfd_error_wrong_format);
4152 1.1 skrll return FALSE;
4153 1.1 skrll }
4154 1.1 skrll
4155 1.1 skrll return TRUE;
4156 1.1 skrll }
4157 1.1 skrll
4158 1.1 skrll /* Display the flags field. */
4159 1.1 skrll
4160 1.1 skrll static bfd_boolean
4161 1.1 skrll cris_elf_print_private_bfd_data (abfd, ptr)
4162 1.1 skrll bfd *abfd;
4163 1.1 skrll PTR ptr;
4164 1.1 skrll {
4165 1.1 skrll FILE *file = (FILE *) ptr;
4166 1.1 skrll
4167 1.1 skrll BFD_ASSERT (abfd != NULL && ptr != NULL);
4168 1.1 skrll
4169 1.1 skrll _bfd_elf_print_private_bfd_data (abfd, ptr);
4170 1.1 skrll
4171 1.1 skrll fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4172 1.1 skrll
4173 1.1 skrll if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4174 1.1 skrll fprintf (file, _(" [symbols have a _ prefix]"));
4175 1.1 skrll if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4176 1.1 skrll == EF_CRIS_VARIANT_COMMON_V10_V32)
4177 1.1 skrll fprintf (file, _(" [v10 and v32]"));
4178 1.1 skrll if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4179 1.1 skrll == EF_CRIS_VARIANT_V32)
4180 1.1 skrll fprintf (file, _(" [v32]"));
4181 1.1 skrll
4182 1.1 skrll fputc ('\n', file);
4183 1.1 skrll return TRUE;
4184 1.1 skrll }
4185 1.1 skrll
4186 1.1 skrll /* Don't mix files with and without a leading underscore. */
4187 1.1 skrll
4188 1.1 skrll static bfd_boolean
4189 1.1 skrll cris_elf_merge_private_bfd_data (ibfd, obfd)
4190 1.1 skrll bfd *ibfd;
4191 1.1 skrll bfd *obfd;
4192 1.1 skrll {
4193 1.1 skrll int imach, omach;
4194 1.1 skrll
4195 1.1 skrll if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4196 1.1 skrll return FALSE;
4197 1.1 skrll
4198 1.1 skrll if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4199 1.1 skrll || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4200 1.1 skrll return TRUE;
4201 1.1 skrll
4202 1.1 skrll imach = bfd_get_mach (ibfd);
4203 1.1 skrll
4204 1.1 skrll if (! elf_flags_init (obfd))
4205 1.1 skrll {
4206 1.1 skrll /* This happens when ld starts out with a 'blank' output file. */
4207 1.1 skrll elf_flags_init (obfd) = TRUE;
4208 1.1 skrll
4209 1.1 skrll /* We ignore the linker-set mach, and instead set it according to
4210 1.1 skrll the first input file. This would also happen if we could
4211 1.1 skrll somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4212 1.1 skrll This allows us to keep the same linker config across
4213 1.1 skrll cris(v0..v10) and crisv32. The drawback is that we can't force
4214 1.1 skrll the output type, which might be a sane thing to do for a
4215 1.1 skrll v10+v32 compatibility object. */
4216 1.1 skrll if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4217 1.1 skrll return FALSE;
4218 1.1 skrll }
4219 1.1 skrll
4220 1.1 skrll if (bfd_get_symbol_leading_char (ibfd)
4221 1.1 skrll != bfd_get_symbol_leading_char (obfd))
4222 1.1 skrll {
4223 1.1 skrll (*_bfd_error_handler)
4224 1.1 skrll (bfd_get_symbol_leading_char (ibfd) == '_'
4225 1.1 skrll ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4226 1.1 skrll : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4227 1.1 skrll ibfd);
4228 1.1 skrll bfd_set_error (bfd_error_bad_value);
4229 1.1 skrll return FALSE;
4230 1.1 skrll }
4231 1.1 skrll
4232 1.1 skrll omach = bfd_get_mach (obfd);
4233 1.1 skrll
4234 1.1 skrll if (imach != omach)
4235 1.1 skrll {
4236 1.1 skrll /* We can get an incompatible combination only if either is
4237 1.1 skrll bfd_mach_cris_v32, and the other one isn't compatible. */
4238 1.1 skrll if ((imach == bfd_mach_cris_v32
4239 1.1 skrll && omach != bfd_mach_cris_v10_v32)
4240 1.1 skrll || (omach == bfd_mach_cris_v32
4241 1.1 skrll && imach != bfd_mach_cris_v10_v32))
4242 1.1 skrll {
4243 1.1 skrll (*_bfd_error_handler)
4244 1.1 skrll ((imach == bfd_mach_cris_v32)
4245 1.1 skrll ? _("%B contains CRIS v32 code, incompatible"
4246 1.1 skrll " with previous objects")
4247 1.1 skrll : _("%B contains non-CRIS-v32 code, incompatible"
4248 1.1 skrll " with previous objects"),
4249 1.1 skrll ibfd);
4250 1.1 skrll bfd_set_error (bfd_error_bad_value);
4251 1.1 skrll return FALSE;
4252 1.1 skrll }
4253 1.1 skrll
4254 1.1 skrll /* We don't have to check the case where the input is compatible
4255 1.1 skrll with v10 and v32, because the output is already known to be set
4256 1.1 skrll to the other (compatible) mach. */
4257 1.1 skrll if (omach == bfd_mach_cris_v10_v32
4258 1.1 skrll && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4259 1.1 skrll return FALSE;
4260 1.1 skrll }
4261 1.1 skrll
4262 1.1 skrll return TRUE;
4263 1.1 skrll }
4264 1.1 skrll
4265 1.1 skrll /* Do side-effects of e_flags copying to obfd. */
4266 1.1 skrll
4267 1.1 skrll static bfd_boolean
4268 1.1 skrll cris_elf_copy_private_bfd_data (ibfd, obfd)
4269 1.1 skrll bfd *ibfd;
4270 1.1 skrll bfd *obfd;
4271 1.1 skrll {
4272 1.1 skrll /* Call the base function. */
4273 1.1 skrll if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4274 1.1 skrll return FALSE;
4275 1.1 skrll
4276 1.1 skrll /* If output is big-endian for some obscure reason, stop here. */
4277 1.1 skrll if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4278 1.1 skrll return FALSE;
4279 1.1 skrll
4280 1.1 skrll if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4281 1.1 skrll || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4282 1.1 skrll return TRUE;
4283 1.1.1.2 christos
4284 1.1.1.2 christos /* Do what we really came here for. */
4285 1.1 skrll return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4286 1.1 skrll }
4287 1.1 skrll
4288 1.1 skrll static enum elf_reloc_type_class
4289 1.1 skrll elf_cris_reloc_type_class (rela)
4290 1.1 skrll const Elf_Internal_Rela *rela;
4291 1.1 skrll {
4292 1.1 skrll enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4293 1.1 skrll switch (r_type)
4294 1.1 skrll {
4295 1.1 skrll case R_CRIS_RELATIVE:
4296 1.1.1.2 christos return reloc_class_relative;
4297 1.1.1.2 christos case R_CRIS_JUMP_SLOT:
4298 1.1.1.2 christos return reloc_class_plt;
4299 1.1.1.2 christos case R_CRIS_COPY:
4300 1.1.1.2 christos return reloc_class_copy;
4301 1.1.1.2 christos default:
4302 1.1.1.2 christos return reloc_class_normal;
4303 1.1.1.2 christos }
4304 1.1.1.2 christos }
4305 1.1.1.2 christos
4306 1.1.1.2 christos /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4307 1.1.1.2 christos two GOT entries from three types with two different sizes. We handle
4308 1.1.1.2 christos it as a single entry, so we can use the regular offset-calculation
4309 1.1.1.2 christos machinery. */
4310 1.1.1.2 christos
4311 1.1.1.2 christos static bfd_vma
4312 1.1.1.2 christos elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4313 1.1.1.2 christos struct bfd_link_info *info ATTRIBUTE_UNUSED,
4314 1.1.1.2 christos struct elf_link_hash_entry *hr,
4315 1.1.1.2 christos bfd *ibfd,
4316 1.1.1.2 christos unsigned long symndx)
4317 1.1.1.2 christos {
4318 1.1.1.2 christos struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4319 1.1.1.2 christos bfd_vma eltsiz = 0;
4320 1.1.1.2 christos
4321 1.1.1.2 christos /* We may have one regular GOT entry or up to two TLS GOT
4322 1.1.1.2 christos entries. */
4323 1.1.1.2 christos if (h == NULL)
4324 1.1.1.2 christos {
4325 1.1.1.2 christos Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4326 1.1.1.2 christos bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4327 1.1.1.2 christos
4328 1.1.1.2 christos BFD_ASSERT (local_got_refcounts != NULL);
4329 1.1.1.2 christos
4330 1.1.1.2 christos if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4331 1.1.1.2 christos {
4332 1.1.1.2 christos /* We can't have a variable referred to both as a regular
4333 1.1.1.2 christos variable and through TLS relocs. */
4334 1.1.1.2 christos BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4335 1.1.1.2 christos && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4336 1.1.1.2 christos return 4;
4337 1.1.1.2 christos }
4338 1.1.1.2 christos
4339 1.1.1.2 christos if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4340 1.1.1.2 christos eltsiz += 8;
4341 1.1.1.2 christos
4342 1.1.1.2 christos if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4343 1.1.1.2 christos eltsiz += 4;
4344 1.1.1.2 christos }
4345 1.1.1.2 christos else
4346 1.1.1.2 christos {
4347 1.1.1.2 christos struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4348 1.1.1.2 christos if (hh->reg_got_refcount > 0)
4349 1.1.1.2 christos {
4350 1.1.1.2 christos /* The actual error-on-input is emitted elsewhere. */
4351 1.1.1.2 christos BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4352 1.1.1.2 christos return 4;
4353 1.1.1.2 christos }
4354 1.1.1.2 christos
4355 1.1.1.2 christos if (hh->dtp_refcount > 0)
4356 1.1.1.2 christos eltsiz += 8;
4357 1.1.1.2 christos
4358 1.1 skrll if (hh->tprel_refcount > 0)
4359 1.1 skrll eltsiz += 4;
4360 1.1.1.2 christos }
4361 1.1 skrll
4362 1.1 skrll /* We're only called when h->got.refcount is non-zero, so we must
4363 1.1 skrll have a non-zero size. */
4364 1.1 skrll BFD_ASSERT (eltsiz != 0);
4365 1.1 skrll return eltsiz;
4366 1.1 skrll }
4367 1.1 skrll
4368 1.1 skrll #define ELF_ARCH bfd_arch_cris
4370 1.1 skrll #define ELF_TARGET_ID CRIS_ELF_DATA
4371 1.1 skrll #define ELF_MACHINE_CODE EM_CRIS
4372 1.1 skrll #define ELF_MAXPAGESIZE 0x2000
4373 1.1.1.2 christos
4374 1.1 skrll #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4375 1.1 skrll #define TARGET_LITTLE_NAME "elf32-cris"
4376 1.1 skrll #define elf_symbol_leading_char 0
4377 1.1 skrll
4378 1.1 skrll #define elf_info_to_howto_rel NULL
4379 1.1 skrll #define elf_info_to_howto cris_info_to_howto_rela
4380 1.1 skrll #define elf_backend_relocate_section cris_elf_relocate_section
4381 1.1 skrll #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4382 1.1 skrll #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4383 1.1 skrll #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4384 1.1 skrll #define elf_backend_check_relocs cris_elf_check_relocs
4385 1.1 skrll #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4386 1.1 skrll #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4387 1.1 skrll
4388 1.1 skrll #define elf_backend_can_gc_sections 1
4389 1.1 skrll #define elf_backend_can_refcount 1
4390 1.1 skrll
4391 1.1 skrll #define elf_backend_object_p cris_elf_object_p
4392 1.1 skrll #define elf_backend_final_write_processing \
4393 1.1 skrll cris_elf_final_write_processing
4394 1.1 skrll #define bfd_elf32_bfd_print_private_bfd_data \
4395 1.1 skrll cris_elf_print_private_bfd_data
4396 1.1 skrll #define bfd_elf32_bfd_merge_private_bfd_data \
4397 1.1 skrll cris_elf_merge_private_bfd_data
4398 1.1.1.2 christos #define bfd_elf32_bfd_copy_private_bfd_data \
4399 1.1.1.2 christos cris_elf_copy_private_bfd_data
4400 1.1 skrll
4401 1.1 skrll #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4402 1.1 skrll #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4403 1.1 skrll
4404 1.1 skrll #define bfd_elf32_bfd_link_hash_table_create \
4405 1.1 skrll elf_cris_link_hash_table_create
4406 1.1 skrll #define elf_backend_adjust_dynamic_symbol \
4407 1.1 skrll elf_cris_adjust_dynamic_symbol
4408 1.1 skrll #define elf_backend_copy_indirect_symbol \
4409 1.1 skrll elf_cris_copy_indirect_symbol
4410 1.1 skrll #define elf_backend_size_dynamic_sections \
4411 1.1 skrll elf_cris_size_dynamic_sections
4412 1.1 skrll #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4413 1.1 skrll #define elf_backend_finish_dynamic_symbol \
4414 1.1 skrll elf_cris_finish_dynamic_symbol
4415 1.1 skrll #define elf_backend_finish_dynamic_sections \
4416 1.1 skrll elf_cris_finish_dynamic_sections
4417 1.1 skrll #define elf_backend_create_dynamic_sections \
4418 1.1.1.2 christos _bfd_elf_create_dynamic_sections
4419 1.1 skrll #define bfd_elf32_bfd_final_link \
4420 1.1 skrll bfd_elf_gc_common_final_link
4421 1.1 skrll #define elf_backend_hide_symbol elf_cris_hide_symbol
4422 1.1 skrll #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4423 1.1 skrll
4424 1.1 skrll #define elf_backend_want_got_plt 1
4425 1.1 skrll #define elf_backend_plt_readonly 1
4426 1.1 skrll #define elf_backend_want_plt_sym 0
4427 1.1 skrll #define elf_backend_got_header_size 12
4428 1.1 skrll #define elf_backend_got_elt_size elf_cris_got_elt_size
4429 1.1 skrll
4430 1.1 skrll /* Later, we my want to optimize RELA entries into REL entries for dynamic
4431 1.1 skrll linking and libraries (if it's a win of any significance). Until then,
4432 1.1 skrll take the easy route. */
4433 1.1 skrll #define elf_backend_may_use_rel_p 0
4434 1.1 skrll #define elf_backend_may_use_rela_p 1
4435 1.1 skrll #define elf_backend_rela_normal 1
4436 1.1 skrll
4437 1.1 skrll #include "elf32-target.h"
4438 1.1 skrll
4439 1.1 skrll #undef TARGET_LITTLE_SYM
4440 #undef TARGET_LITTLE_NAME
4441 #undef elf_symbol_leading_char
4442
4443 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4444 #define TARGET_LITTLE_NAME "elf32-us-cris"
4445 #define elf_symbol_leading_char '_'
4446 #undef elf32_bed
4447 #define elf32_bed elf32_us_cris_bed
4448
4449 #include "elf32-target.h"
4450