Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Motorola 68k series support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
1d7e9d18 | 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
7686d77d | 4 | Free Software Foundation, Inc. |
252b5132 | 5 | |
ae9a127f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
ae9a127f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 11 | (at your option) any later version. |
252b5132 | 12 | |
ae9a127f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ae9a127f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 RH |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
28 | #include "elf/m68k.h" | |
266abb8f | 29 | #include "opcode/m68k.h" |
252b5132 RH |
30 | |
31 | static reloc_howto_type *reloc_type_lookup | |
32 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
33 | static void rtype_to_howto | |
947216bf | 34 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
252b5132 RH |
35 | static struct bfd_hash_entry *elf_m68k_link_hash_newfunc |
36 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
37 | static struct bfd_link_hash_table *elf_m68k_link_hash_table_create | |
38 | PARAMS ((bfd *)); | |
b34976b6 | 39 | static bfd_boolean elf_m68k_check_relocs |
252b5132 RH |
40 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
41 | const Elf_Internal_Rela *)); | |
b34976b6 | 42 | static bfd_boolean elf_m68k_adjust_dynamic_symbol |
252b5132 | 43 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 44 | static bfd_boolean elf_m68k_size_dynamic_sections |
252b5132 | 45 | PARAMS ((bfd *, struct bfd_link_info *)); |
0cca5f05 AS |
46 | static bfd_boolean elf_m68k_discard_copies |
47 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
b34976b6 | 48 | static bfd_boolean elf_m68k_relocate_section |
252b5132 RH |
49 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
50 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 51 | static bfd_boolean elf_m68k_finish_dynamic_symbol |
252b5132 RH |
52 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
53 | Elf_Internal_Sym *)); | |
b34976b6 | 54 | static bfd_boolean elf_m68k_finish_dynamic_sections |
252b5132 RH |
55 | PARAMS ((bfd *, struct bfd_link_info *)); |
56 | ||
b34976b6 | 57 | static bfd_boolean elf32_m68k_set_private_flags |
9e1281c7 | 58 | PARAMS ((bfd *, flagword)); |
b34976b6 | 59 | static bfd_boolean elf32_m68k_merge_private_bfd_data |
9e1281c7 | 60 | PARAMS ((bfd *, bfd *)); |
b34976b6 | 61 | static bfd_boolean elf32_m68k_print_private_bfd_data |
9e1281c7 | 62 | PARAMS ((bfd *, PTR)); |
aa91b392 | 63 | static enum elf_reloc_type_class elf32_m68k_reloc_type_class |
f51e552e | 64 | PARAMS ((const Elf_Internal_Rela *)); |
9e1281c7 | 65 | |
252b5132 | 66 | static reloc_howto_type howto_table[] = { |
b34976b6 AM |
67 | HOWTO(R_68K_NONE, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE), |
68 | HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE), | |
69 | HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE), | |
70 | HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE), | |
71 | HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE), | |
72 | HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE), | |
73 | HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE), | |
74 | HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE), | |
75 | HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE), | |
76 | HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE), | |
77 | HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE), | |
78 | HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE), | |
79 | HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE), | |
80 | HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE), | |
81 | HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE), | |
82 | HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE), | |
83 | HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE), | |
84 | HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE), | |
85 | HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE), | |
86 | HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE), | |
87 | HOWTO(R_68K_GLOB_DAT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_GLOB_DAT", FALSE, 0, 0xffffffff,FALSE), | |
88 | HOWTO(R_68K_JMP_SLOT, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_JMP_SLOT", FALSE, 0, 0xffffffff,FALSE), | |
89 | HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE), | |
ae9a127f | 90 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
91 | HOWTO (R_68K_GNU_VTINHERIT, /* type */ |
92 | 0, /* rightshift */ | |
93 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
94 | 0, /* bitsize */ | |
b34976b6 | 95 | FALSE, /* pc_relative */ |
252b5132 RH |
96 | 0, /* bitpos */ |
97 | complain_overflow_dont, /* complain_on_overflow */ | |
98 | NULL, /* special_function */ | |
99 | "R_68K_GNU_VTINHERIT", /* name */ | |
b34976b6 | 100 | FALSE, /* partial_inplace */ |
252b5132 RH |
101 | 0, /* src_mask */ |
102 | 0, /* dst_mask */ | |
b34976b6 | 103 | FALSE), |
ae9a127f | 104 | /* GNU extension to record C++ vtable member usage. */ |
252b5132 RH |
105 | HOWTO (R_68K_GNU_VTENTRY, /* type */ |
106 | 0, /* rightshift */ | |
107 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
108 | 0, /* bitsize */ | |
b34976b6 | 109 | FALSE, /* pc_relative */ |
252b5132 RH |
110 | 0, /* bitpos */ |
111 | complain_overflow_dont, /* complain_on_overflow */ | |
112 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
113 | "R_68K_GNU_VTENTRY", /* name */ | |
b34976b6 | 114 | FALSE, /* partial_inplace */ |
252b5132 RH |
115 | 0, /* src_mask */ |
116 | 0, /* dst_mask */ | |
b34976b6 | 117 | FALSE), |
cf869cce NC |
118 | |
119 | /* TLS general dynamic variable reference. */ | |
120 | HOWTO (R_68K_TLS_GD32, /* type */ | |
121 | 0, /* rightshift */ | |
122 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
123 | 32, /* bitsize */ | |
124 | FALSE, /* pc_relative */ | |
125 | 0, /* bitpos */ | |
126 | complain_overflow_bitfield, /* complain_on_overflow */ | |
127 | bfd_elf_generic_reloc, /* special_function */ | |
128 | "R_68K_TLS_GD32", /* name */ | |
129 | FALSE, /* partial_inplace */ | |
130 | 0, /* src_mask */ | |
131 | 0xffffffff, /* dst_mask */ | |
132 | FALSE), /* pcrel_offset */ | |
133 | ||
134 | HOWTO (R_68K_TLS_GD16, /* type */ | |
135 | 0, /* rightshift */ | |
136 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
137 | 16, /* bitsize */ | |
138 | FALSE, /* pc_relative */ | |
139 | 0, /* bitpos */ | |
140 | complain_overflow_signed, /* complain_on_overflow */ | |
141 | bfd_elf_generic_reloc, /* special_function */ | |
142 | "R_68K_TLS_GD16", /* name */ | |
143 | FALSE, /* partial_inplace */ | |
144 | 0, /* src_mask */ | |
145 | 0x0000ffff, /* dst_mask */ | |
146 | FALSE), /* pcrel_offset */ | |
147 | ||
148 | HOWTO (R_68K_TLS_GD8, /* type */ | |
149 | 0, /* rightshift */ | |
150 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
151 | 8, /* bitsize */ | |
152 | FALSE, /* pc_relative */ | |
153 | 0, /* bitpos */ | |
154 | complain_overflow_signed, /* complain_on_overflow */ | |
155 | bfd_elf_generic_reloc, /* special_function */ | |
156 | "R_68K_TLS_GD8", /* name */ | |
157 | FALSE, /* partial_inplace */ | |
158 | 0, /* src_mask */ | |
159 | 0x000000ff, /* dst_mask */ | |
160 | FALSE), /* pcrel_offset */ | |
161 | ||
162 | /* TLS local dynamic variable reference. */ | |
163 | HOWTO (R_68K_TLS_LDM32, /* type */ | |
164 | 0, /* rightshift */ | |
165 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
166 | 32, /* bitsize */ | |
167 | FALSE, /* pc_relative */ | |
168 | 0, /* bitpos */ | |
169 | complain_overflow_bitfield, /* complain_on_overflow */ | |
170 | bfd_elf_generic_reloc, /* special_function */ | |
171 | "R_68K_TLS_LDM32", /* name */ | |
172 | FALSE, /* partial_inplace */ | |
173 | 0, /* src_mask */ | |
174 | 0xffffffff, /* dst_mask */ | |
175 | FALSE), /* pcrel_offset */ | |
176 | ||
177 | HOWTO (R_68K_TLS_LDM16, /* type */ | |
178 | 0, /* rightshift */ | |
179 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
180 | 16, /* bitsize */ | |
181 | FALSE, /* pc_relative */ | |
182 | 0, /* bitpos */ | |
183 | complain_overflow_signed, /* complain_on_overflow */ | |
184 | bfd_elf_generic_reloc, /* special_function */ | |
185 | "R_68K_TLS_LDM16", /* name */ | |
186 | FALSE, /* partial_inplace */ | |
187 | 0, /* src_mask */ | |
188 | 0x0000ffff, /* dst_mask */ | |
189 | FALSE), /* pcrel_offset */ | |
190 | ||
191 | HOWTO (R_68K_TLS_LDM8, /* type */ | |
192 | 0, /* rightshift */ | |
193 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
194 | 8, /* bitsize */ | |
195 | FALSE, /* pc_relative */ | |
196 | 0, /* bitpos */ | |
197 | complain_overflow_signed, /* complain_on_overflow */ | |
198 | bfd_elf_generic_reloc, /* special_function */ | |
199 | "R_68K_TLS_LDM8", /* name */ | |
200 | FALSE, /* partial_inplace */ | |
201 | 0, /* src_mask */ | |
202 | 0x000000ff, /* dst_mask */ | |
203 | FALSE), /* pcrel_offset */ | |
204 | ||
205 | HOWTO (R_68K_TLS_LDO32, /* type */ | |
206 | 0, /* rightshift */ | |
207 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
208 | 32, /* bitsize */ | |
209 | FALSE, /* pc_relative */ | |
210 | 0, /* bitpos */ | |
211 | complain_overflow_bitfield, /* complain_on_overflow */ | |
212 | bfd_elf_generic_reloc, /* special_function */ | |
213 | "R_68K_TLS_LDO32", /* name */ | |
214 | FALSE, /* partial_inplace */ | |
215 | 0, /* src_mask */ | |
216 | 0xffffffff, /* dst_mask */ | |
217 | FALSE), /* pcrel_offset */ | |
218 | ||
219 | HOWTO (R_68K_TLS_LDO16, /* type */ | |
220 | 0, /* rightshift */ | |
221 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
222 | 16, /* bitsize */ | |
223 | FALSE, /* pc_relative */ | |
224 | 0, /* bitpos */ | |
225 | complain_overflow_signed, /* complain_on_overflow */ | |
226 | bfd_elf_generic_reloc, /* special_function */ | |
227 | "R_68K_TLS_LDO16", /* name */ | |
228 | FALSE, /* partial_inplace */ | |
229 | 0, /* src_mask */ | |
230 | 0x0000ffff, /* dst_mask */ | |
231 | FALSE), /* pcrel_offset */ | |
232 | ||
233 | HOWTO (R_68K_TLS_LDO8, /* type */ | |
234 | 0, /* rightshift */ | |
235 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
236 | 8, /* bitsize */ | |
237 | FALSE, /* pc_relative */ | |
238 | 0, /* bitpos */ | |
239 | complain_overflow_signed, /* complain_on_overflow */ | |
240 | bfd_elf_generic_reloc, /* special_function */ | |
241 | "R_68K_TLS_LDO8", /* name */ | |
242 | FALSE, /* partial_inplace */ | |
243 | 0, /* src_mask */ | |
244 | 0x000000ff, /* dst_mask */ | |
245 | FALSE), /* pcrel_offset */ | |
246 | ||
247 | /* TLS initial execution variable reference. */ | |
248 | HOWTO (R_68K_TLS_IE32, /* type */ | |
249 | 0, /* rightshift */ | |
250 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
251 | 32, /* bitsize */ | |
252 | FALSE, /* pc_relative */ | |
253 | 0, /* bitpos */ | |
254 | complain_overflow_bitfield, /* complain_on_overflow */ | |
255 | bfd_elf_generic_reloc, /* special_function */ | |
256 | "R_68K_TLS_IE32", /* name */ | |
257 | FALSE, /* partial_inplace */ | |
258 | 0, /* src_mask */ | |
259 | 0xffffffff, /* dst_mask */ | |
260 | FALSE), /* pcrel_offset */ | |
261 | ||
262 | HOWTO (R_68K_TLS_IE16, /* type */ | |
263 | 0, /* rightshift */ | |
264 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
265 | 16, /* bitsize */ | |
266 | FALSE, /* pc_relative */ | |
267 | 0, /* bitpos */ | |
268 | complain_overflow_signed, /* complain_on_overflow */ | |
269 | bfd_elf_generic_reloc, /* special_function */ | |
270 | "R_68K_TLS_IE16", /* name */ | |
271 | FALSE, /* partial_inplace */ | |
272 | 0, /* src_mask */ | |
273 | 0x0000ffff, /* dst_mask */ | |
274 | FALSE), /* pcrel_offset */ | |
275 | ||
276 | HOWTO (R_68K_TLS_IE8, /* type */ | |
277 | 0, /* rightshift */ | |
278 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
279 | 8, /* bitsize */ | |
280 | FALSE, /* pc_relative */ | |
281 | 0, /* bitpos */ | |
282 | complain_overflow_signed, /* complain_on_overflow */ | |
283 | bfd_elf_generic_reloc, /* special_function */ | |
284 | "R_68K_TLS_IE8", /* name */ | |
285 | FALSE, /* partial_inplace */ | |
286 | 0, /* src_mask */ | |
287 | 0x000000ff, /* dst_mask */ | |
288 | FALSE), /* pcrel_offset */ | |
289 | ||
290 | /* TLS local execution variable reference. */ | |
291 | HOWTO (R_68K_TLS_LE32, /* type */ | |
292 | 0, /* rightshift */ | |
293 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
294 | 32, /* bitsize */ | |
295 | FALSE, /* pc_relative */ | |
296 | 0, /* bitpos */ | |
297 | complain_overflow_bitfield, /* complain_on_overflow */ | |
298 | bfd_elf_generic_reloc, /* special_function */ | |
299 | "R_68K_TLS_LE32", /* name */ | |
300 | FALSE, /* partial_inplace */ | |
301 | 0, /* src_mask */ | |
302 | 0xffffffff, /* dst_mask */ | |
303 | FALSE), /* pcrel_offset */ | |
304 | ||
305 | HOWTO (R_68K_TLS_LE16, /* type */ | |
306 | 0, /* rightshift */ | |
307 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 16, /* bitsize */ | |
309 | FALSE, /* pc_relative */ | |
310 | 0, /* bitpos */ | |
311 | complain_overflow_signed, /* complain_on_overflow */ | |
312 | bfd_elf_generic_reloc, /* special_function */ | |
313 | "R_68K_TLS_LE16", /* name */ | |
314 | FALSE, /* partial_inplace */ | |
315 | 0, /* src_mask */ | |
316 | 0x0000ffff, /* dst_mask */ | |
317 | FALSE), /* pcrel_offset */ | |
318 | ||
319 | HOWTO (R_68K_TLS_LE8, /* type */ | |
320 | 0, /* rightshift */ | |
321 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
322 | 8, /* bitsize */ | |
323 | FALSE, /* pc_relative */ | |
324 | 0, /* bitpos */ | |
325 | complain_overflow_signed, /* complain_on_overflow */ | |
326 | bfd_elf_generic_reloc, /* special_function */ | |
327 | "R_68K_TLS_LE8", /* name */ | |
328 | FALSE, /* partial_inplace */ | |
329 | 0, /* src_mask */ | |
330 | 0x000000ff, /* dst_mask */ | |
331 | FALSE), /* pcrel_offset */ | |
332 | ||
333 | /* TLS GD/LD dynamic relocations. */ | |
334 | HOWTO (R_68K_TLS_DTPMOD32, /* type */ | |
335 | 0, /* rightshift */ | |
336 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
337 | 32, /* bitsize */ | |
338 | FALSE, /* pc_relative */ | |
339 | 0, /* bitpos */ | |
340 | complain_overflow_dont, /* complain_on_overflow */ | |
341 | bfd_elf_generic_reloc, /* special_function */ | |
342 | "R_68K_TLS_DTPMOD32", /* name */ | |
343 | FALSE, /* partial_inplace */ | |
344 | 0, /* src_mask */ | |
345 | 0xffffffff, /* dst_mask */ | |
346 | FALSE), /* pcrel_offset */ | |
347 | ||
348 | HOWTO (R_68K_TLS_DTPREL32, /* type */ | |
349 | 0, /* rightshift */ | |
350 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
351 | 32, /* bitsize */ | |
352 | FALSE, /* pc_relative */ | |
353 | 0, /* bitpos */ | |
354 | complain_overflow_dont, /* complain_on_overflow */ | |
355 | bfd_elf_generic_reloc, /* special_function */ | |
356 | "R_68K_TLS_DTPREL32", /* name */ | |
357 | FALSE, /* partial_inplace */ | |
358 | 0, /* src_mask */ | |
359 | 0xffffffff, /* dst_mask */ | |
360 | FALSE), /* pcrel_offset */ | |
361 | ||
362 | HOWTO (R_68K_TLS_TPREL32, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
365 | 32, /* bitsize */ | |
366 | FALSE, /* pc_relative */ | |
367 | 0, /* bitpos */ | |
368 | complain_overflow_dont, /* complain_on_overflow */ | |
369 | bfd_elf_generic_reloc, /* special_function */ | |
370 | "R_68K_TLS_TPREL32", /* name */ | |
371 | FALSE, /* partial_inplace */ | |
372 | 0, /* src_mask */ | |
373 | 0xffffffff, /* dst_mask */ | |
374 | FALSE), /* pcrel_offset */ | |
252b5132 RH |
375 | }; |
376 | ||
377 | static void | |
c86ad514 | 378 | rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) |
252b5132 | 379 | { |
c86ad514 AS |
380 | unsigned int indx = ELF32_R_TYPE (dst->r_info); |
381 | ||
382 | if (indx >= (unsigned int) R_68K_max) | |
383 | { | |
384 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
385 | abfd, (int) indx); | |
386 | indx = R_68K_NONE; | |
387 | } | |
388 | cache_ptr->howto = &howto_table[indx]; | |
252b5132 RH |
389 | } |
390 | ||
391 | #define elf_info_to_howto rtype_to_howto | |
392 | ||
393 | static const struct | |
394 | { | |
395 | bfd_reloc_code_real_type bfd_val; | |
396 | int elf_val; | |
cf869cce NC |
397 | } |
398 | reloc_map[] = | |
399 | { | |
252b5132 RH |
400 | { BFD_RELOC_NONE, R_68K_NONE }, |
401 | { BFD_RELOC_32, R_68K_32 }, | |
402 | { BFD_RELOC_16, R_68K_16 }, | |
403 | { BFD_RELOC_8, R_68K_8 }, | |
404 | { BFD_RELOC_32_PCREL, R_68K_PC32 }, | |
405 | { BFD_RELOC_16_PCREL, R_68K_PC16 }, | |
406 | { BFD_RELOC_8_PCREL, R_68K_PC8 }, | |
407 | { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, | |
408 | { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, | |
409 | { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, | |
410 | { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, | |
411 | { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, | |
412 | { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, | |
413 | { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, | |
414 | { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, | |
415 | { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, | |
416 | { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, | |
417 | { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, | |
418 | { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, | |
419 | { BFD_RELOC_NONE, R_68K_COPY }, | |
420 | { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, | |
421 | { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, | |
422 | { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, | |
423 | { BFD_RELOC_CTOR, R_68K_32 }, | |
424 | { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, | |
425 | { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, | |
cf869cce NC |
426 | { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 }, |
427 | { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 }, | |
428 | { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 }, | |
429 | { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 }, | |
430 | { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 }, | |
431 | { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 }, | |
432 | { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 }, | |
433 | { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 }, | |
434 | { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 }, | |
435 | { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 }, | |
436 | { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 }, | |
437 | { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 }, | |
438 | { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 }, | |
439 | { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 }, | |
440 | { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 }, | |
252b5132 RH |
441 | }; |
442 | ||
443 | static reloc_howto_type * | |
444 | reloc_type_lookup (abfd, code) | |
121089cb | 445 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
446 | bfd_reloc_code_real_type code; |
447 | { | |
448 | unsigned int i; | |
449 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
450 | { | |
451 | if (reloc_map[i].bfd_val == code) | |
452 | return &howto_table[reloc_map[i].elf_val]; | |
453 | } | |
454 | return 0; | |
455 | } | |
456 | ||
157090f7 AM |
457 | static reloc_howto_type * |
458 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
459 | { | |
460 | unsigned int i; | |
461 | ||
462 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
463 | if (howto_table[i].name != NULL | |
464 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
465 | return &howto_table[i]; | |
466 | ||
467 | return NULL; | |
468 | } | |
469 | ||
252b5132 | 470 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 471 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
252b5132 | 472 | #define ELF_ARCH bfd_arch_m68k |
ae95ffa6 | 473 | #define ELF_TARGET_ID M68K_ELF_DATA |
252b5132 RH |
474 | \f |
475 | /* Functions for the m68k ELF linker. */ | |
476 | ||
477 | /* The name of the dynamic interpreter. This is put in the .interp | |
478 | section. */ | |
479 | ||
480 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
481 | ||
cc3e26be RS |
482 | /* Describes one of the various PLT styles. */ |
483 | ||
484 | struct elf_m68k_plt_info | |
485 | { | |
486 | /* The size of each PLT entry. */ | |
487 | bfd_vma size; | |
488 | ||
489 | /* The template for the first PLT entry. */ | |
490 | const bfd_byte *plt0_entry; | |
491 | ||
492 | /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations. | |
493 | The comments by each member indicate the value that the relocation | |
494 | is against. */ | |
495 | struct { | |
496 | unsigned int got4; /* .got + 4 */ | |
497 | unsigned int got8; /* .got + 8 */ | |
498 | } plt0_relocs; | |
499 | ||
500 | /* The template for a symbol's PLT entry. */ | |
501 | const bfd_byte *symbol_entry; | |
502 | ||
503 | /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations. | |
504 | The comments by each member indicate the value that the relocation | |
505 | is against. */ | |
506 | struct { | |
507 | unsigned int got; /* the symbol's .got.plt entry */ | |
508 | unsigned int plt; /* .plt */ | |
509 | } symbol_relocs; | |
510 | ||
511 | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. | |
512 | The stub starts with "move.l #relocoffset,%d0". */ | |
513 | bfd_vma symbol_resolve_entry; | |
514 | }; | |
515 | ||
252b5132 RH |
516 | /* The size in bytes of an entry in the procedure linkage table. */ |
517 | ||
518 | #define PLT_ENTRY_SIZE 20 | |
519 | ||
520 | /* The first entry in a procedure linkage table looks like this. See | |
521 | the SVR4 ABI m68k supplement to see how this works. */ | |
522 | ||
523 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
524 | { | |
525 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
cc3e26be | 526 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
252b5132 | 527 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ |
cc3e26be | 528 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
252b5132 RH |
529 | 0, 0, 0, 0 /* pad out to 20 bytes. */ |
530 | }; | |
531 | ||
532 | /* Subsequent entries in a procedure linkage table look like this. */ | |
533 | ||
534 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
535 | { | |
536 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
cc3e26be | 537 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
252b5132 | 538 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 539 | 0, 0, 0, 0, /* + reloc index */ |
252b5132 | 540 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 541 | 0, 0, 0, 0 /* + .plt - . */ |
252b5132 RH |
542 | }; |
543 | ||
cc3e26be RS |
544 | static const struct elf_m68k_plt_info elf_m68k_plt_info = { |
545 | PLT_ENTRY_SIZE, | |
546 | elf_m68k_plt0_entry, { 4, 12 }, | |
547 | elf_m68k_plt_entry, { 4, 16 }, 8 | |
548 | }; | |
238d258f | 549 | |
7fb9f789 | 550 | #define ISAB_PLT_ENTRY_SIZE 24 |
238d258f | 551 | |
cc3e26be | 552 | static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 553 | { |
cc3e26be RS |
554 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
555 | 0, 0, 0, 0, /* + (.got + 4) - . */ | |
556 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */ | |
557 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
558 | 0, 0, 0, 0, /* + (.got + 8) - . */ | |
559 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
560 | 0x4e, 0xd0, /* jmp (%a0) */ |
561 | 0x4e, 0x71 /* nop */ | |
562 | }; | |
563 | ||
564 | /* Subsequent entries in a procedure linkage table look like this. */ | |
565 | ||
cc3e26be | 566 | static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 567 | { |
cc3e26be RS |
568 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
569 | 0, 0, 0, 0, /* + (.got.plt entry) - . */ | |
570 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
238d258f NC |
571 | 0x4e, 0xd0, /* jmp (%a0) */ |
572 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
cc3e26be | 573 | 0, 0, 0, 0, /* + reloc index */ |
238d258f | 574 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 575 | 0, 0, 0, 0 /* + .plt - . */ |
238d258f NC |
576 | }; |
577 | ||
cc3e26be RS |
578 | static const struct elf_m68k_plt_info elf_isab_plt_info = { |
579 | ISAB_PLT_ENTRY_SIZE, | |
580 | elf_isab_plt0_entry, { 2, 12 }, | |
581 | elf_isab_plt_entry, { 2, 20 }, 12 | |
582 | }; | |
9e1281c7 | 583 | |
7fb9f789 | 584 | #define ISAC_PLT_ENTRY_SIZE 24 |
9a2e615a NS |
585 | |
586 | static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] = | |
587 | { | |
588 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
589 | 0, 0, 0, 0, /* replaced with .got + 4 - . */ | |
590 | 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */ | |
591 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
592 | 0, 0, 0, 0, /* replaced with .got + 8 - . */ | |
593 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
594 | 0x4e, 0xd0, /* jmp (%a0) */ | |
595 | 0x4e, 0x71 /* nop */ | |
596 | }; | |
597 | ||
598 | /* Subsequent entries in a procedure linkage table look like this. */ | |
599 | ||
600 | static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] = | |
601 | { | |
602 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
603 | 0, 0, 0, 0, /* replaced with (.got entry) - . */ | |
604 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
605 | 0x4e, 0xd0, /* jmp (%a0) */ | |
606 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
607 | 0, 0, 0, 0, /* replaced with offset into relocation table */ | |
608 | 0x61, 0xff, /* bsr.l .plt */ | |
609 | 0, 0, 0, 0 /* replaced with .plt - . */ | |
610 | }; | |
611 | ||
612 | static const struct elf_m68k_plt_info elf_isac_plt_info = { | |
613 | ISAC_PLT_ENTRY_SIZE, | |
614 | elf_isac_plt0_entry, { 2, 12}, | |
615 | elf_isac_plt_entry, { 2, 20 }, 12 | |
616 | }; | |
617 | ||
cc3e26be | 618 | #define CPU32_PLT_ENTRY_SIZE 24 |
9e1281c7 | 619 | /* Procedure linkage table entries for the cpu32 */ |
cc3e26be | 620 | static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 621 | { |
6091b433 | 622 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
cc3e26be | 623 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
6091b433 | 624 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 625 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
6091b433 | 626 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 CM |
627 | 0, 0, 0, 0, /* pad out to 24 bytes. */ |
628 | 0, 0 | |
629 | }; | |
630 | ||
cc3e26be | 631 | static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 632 | { |
1ca42bad | 633 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
cc3e26be | 634 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
1ca42bad | 635 | 0x4e, 0xd1, /* jmp %a1@ */ |
9e1281c7 | 636 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 637 | 0, 0, 0, 0, /* + reloc index */ |
9e1281c7 | 638 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 639 | 0, 0, 0, 0, /* + .plt - . */ |
9e1281c7 CM |
640 | 0, 0 |
641 | }; | |
642 | ||
cc3e26be RS |
643 | static const struct elf_m68k_plt_info elf_cpu32_plt_info = { |
644 | CPU32_PLT_ENTRY_SIZE, | |
645 | elf_cpu32_plt0_entry, { 4, 12 }, | |
646 | elf_cpu32_plt_entry, { 4, 18 }, 10 | |
647 | }; | |
648 | ||
252b5132 RH |
649 | /* The m68k linker needs to keep track of the number of relocs that it |
650 | decides to copy in check_relocs for each symbol. This is so that it | |
651 | can discard PC relative relocs if it doesn't need them when linking | |
652 | with -Bsymbolic. We store the information in a field extending the | |
653 | regular ELF linker hash table. */ | |
654 | ||
655 | /* This structure keeps track of the number of PC relative relocs we have | |
656 | copied for a given symbol. */ | |
657 | ||
658 | struct elf_m68k_pcrel_relocs_copied | |
659 | { | |
660 | /* Next section. */ | |
661 | struct elf_m68k_pcrel_relocs_copied *next; | |
662 | /* A section in dynobj. */ | |
663 | asection *section; | |
664 | /* Number of relocs copied in this section. */ | |
665 | bfd_size_type count; | |
666 | }; | |
667 | ||
7fb9f789 NC |
668 | /* Forward declaration. */ |
669 | struct elf_m68k_got_entry; | |
670 | ||
252b5132 RH |
671 | /* m68k ELF linker hash entry. */ |
672 | ||
673 | struct elf_m68k_link_hash_entry | |
674 | { | |
675 | struct elf_link_hash_entry root; | |
676 | ||
677 | /* Number of PC relative relocs copied for this symbol. */ | |
678 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
7fb9f789 NC |
679 | |
680 | /* Key to got_entries. */ | |
681 | unsigned long got_entry_key; | |
682 | ||
683 | /* List of GOT entries for this symbol. This list is build during | |
684 | offset finalization and is used within elf_m68k_finish_dynamic_symbol | |
685 | to traverse all GOT entries for a particular symbol. | |
686 | ||
687 | ??? We could've used root.got.glist field instead, but having | |
688 | a separate field is cleaner. */ | |
689 | struct elf_m68k_got_entry *glist; | |
252b5132 RH |
690 | }; |
691 | ||
0cca5f05 AS |
692 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
693 | ||
7fb9f789 NC |
694 | /* Key part of GOT entry in hashtable. */ |
695 | struct elf_m68k_got_entry_key | |
696 | { | |
697 | /* BFD in which this symbol was defined. NULL for global symbols. */ | |
698 | const bfd *bfd; | |
699 | ||
700 | /* Symbol index. Either local symbol index or h->got_entry_key. */ | |
701 | unsigned long symndx; | |
cf869cce NC |
702 | |
703 | /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32}, | |
704 | R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}. | |
705 | ||
706 | From perspective of hashtable key, only elf_m68k_got_reloc_type (type) | |
707 | matters. That is, we distinguish between, say, R_68K_GOT16O | |
708 | and R_68K_GOT32O when allocating offsets, but they are considered to be | |
709 | the same when searching got->entries. */ | |
710 | enum elf_m68k_reloc_type type; | |
7fb9f789 NC |
711 | }; |
712 | ||
cf869cce NC |
713 | /* Size of the GOT offset suitable for relocation. */ |
714 | enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST }; | |
715 | ||
7fb9f789 NC |
716 | /* Entry of the GOT. */ |
717 | struct elf_m68k_got_entry | |
718 | { | |
719 | /* GOT entries are put into a got->entries hashtable. This is the key. */ | |
720 | struct elf_m68k_got_entry_key key_; | |
721 | ||
722 | /* GOT entry data. We need s1 before offset finalization and s2 after. */ | |
723 | union | |
724 | { | |
725 | struct | |
726 | { | |
727 | /* Number of times this entry is referenced. It is used to | |
728 | filter out unnecessary GOT slots in elf_m68k_gc_sweep_hook. */ | |
729 | bfd_vma refcount; | |
7fb9f789 NC |
730 | } s1; |
731 | ||
732 | struct | |
733 | { | |
734 | /* Offset from the start of .got section. To calculate offset relative | |
735 | to GOT pointer one should substract got->offset from this value. */ | |
736 | bfd_vma offset; | |
737 | ||
738 | /* Pointer to the next GOT entry for this global symbol. | |
739 | Symbols have at most one entry in one GOT, but might | |
740 | have entries in more than one GOT. | |
741 | Root of this list is h->glist. | |
742 | NULL for local symbols. */ | |
743 | struct elf_m68k_got_entry *next; | |
744 | } s2; | |
745 | } u; | |
746 | }; | |
747 | ||
cf869cce NC |
748 | /* Return representative type for relocation R_TYPE. |
749 | This is used to avoid enumerating many relocations in comparisons, | |
750 | switches etc. */ | |
751 | ||
752 | static enum elf_m68k_reloc_type | |
753 | elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type) | |
754 | { | |
755 | switch (r_type) | |
756 | { | |
757 | /* In most cases R_68K_GOTx relocations require the very same | |
758 | handling as R_68K_GOT32O relocation. In cases when we need | |
759 | to distinguish between the two, we use explicitly compare against | |
760 | r_type. */ | |
761 | case R_68K_GOT32: | |
762 | case R_68K_GOT16: | |
763 | case R_68K_GOT8: | |
764 | case R_68K_GOT32O: | |
765 | case R_68K_GOT16O: | |
766 | case R_68K_GOT8O: | |
767 | return R_68K_GOT32O; | |
768 | ||
769 | case R_68K_TLS_GD32: | |
770 | case R_68K_TLS_GD16: | |
771 | case R_68K_TLS_GD8: | |
772 | return R_68K_TLS_GD32; | |
773 | ||
774 | case R_68K_TLS_LDM32: | |
775 | case R_68K_TLS_LDM16: | |
776 | case R_68K_TLS_LDM8: | |
777 | return R_68K_TLS_LDM32; | |
778 | ||
779 | case R_68K_TLS_IE32: | |
780 | case R_68K_TLS_IE16: | |
781 | case R_68K_TLS_IE8: | |
782 | return R_68K_TLS_IE32; | |
783 | ||
784 | default: | |
785 | BFD_ASSERT (FALSE); | |
786 | return 0; | |
787 | } | |
788 | } | |
789 | ||
790 | /* Return size of the GOT entry offset for relocation R_TYPE. */ | |
791 | ||
792 | static enum elf_m68k_got_offset_size | |
793 | elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type) | |
794 | { | |
795 | switch (r_type) | |
796 | { | |
797 | case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8: | |
798 | case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32: | |
799 | case R_68K_TLS_IE32: | |
800 | return R_32; | |
801 | ||
802 | case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16: | |
803 | case R_68K_TLS_IE16: | |
804 | return R_16; | |
805 | ||
806 | case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8: | |
807 | case R_68K_TLS_IE8: | |
808 | return R_8; | |
809 | ||
810 | default: | |
811 | BFD_ASSERT (FALSE); | |
812 | return 0; | |
813 | } | |
814 | } | |
815 | ||
816 | /* Return number of GOT entries we need to allocate in GOT for | |
817 | relocation R_TYPE. */ | |
818 | ||
819 | static bfd_vma | |
820 | elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type) | |
821 | { | |
822 | switch (elf_m68k_reloc_got_type (r_type)) | |
823 | { | |
824 | case R_68K_GOT32O: | |
825 | case R_68K_TLS_IE32: | |
826 | return 1; | |
827 | ||
828 | case R_68K_TLS_GD32: | |
829 | case R_68K_TLS_LDM32: | |
830 | return 2; | |
831 | ||
832 | default: | |
833 | BFD_ASSERT (FALSE); | |
834 | return 0; | |
835 | } | |
836 | } | |
837 | ||
838 | /* Return TRUE if relocation R_TYPE is a TLS one. */ | |
839 | ||
840 | static bfd_boolean | |
841 | elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type) | |
842 | { | |
843 | switch (r_type) | |
844 | { | |
845 | case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8: | |
846 | case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8: | |
847 | case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8: | |
848 | case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8: | |
849 | case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8: | |
850 | case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32: | |
851 | return TRUE; | |
852 | ||
853 | default: | |
854 | return FALSE; | |
855 | } | |
856 | } | |
857 | ||
7fb9f789 NC |
858 | /* Data structure representing a single GOT. */ |
859 | struct elf_m68k_got | |
860 | { | |
861 | /* Hashtable of 'struct elf_m68k_got_entry's. | |
862 | Starting size of this table is the maximum number of | |
863 | R_68K_GOT8O entries. */ | |
864 | htab_t entries; | |
865 | ||
cf869cce NC |
866 | /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require |
867 | several GOT slots. | |
7fb9f789 | 868 | |
cf869cce NC |
869 | n_slots[R_8] is the count of R_8 slots in this GOT. |
870 | n_slots[R_16] is the cumulative count of R_8 and R_16 slots | |
871 | in this GOT. | |
872 | n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots | |
873 | in this GOT. This is the total number of slots. */ | |
874 | bfd_vma n_slots[R_LAST]; | |
7fb9f789 | 875 | |
cf869cce | 876 | /* Number of local (entry->key_.h == NULL) slots in this GOT. |
7fb9f789 NC |
877 | This is only used to properly calculate size of .rela.got section; |
878 | see elf_m68k_partition_multi_got. */ | |
cf869cce | 879 | bfd_vma local_n_slots; |
7fb9f789 NC |
880 | |
881 | /* Offset of this GOT relative to beginning of .got section. */ | |
882 | bfd_vma offset; | |
883 | }; | |
884 | ||
885 | /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */ | |
886 | struct elf_m68k_bfd2got_entry | |
887 | { | |
888 | /* BFD. */ | |
889 | const bfd *bfd; | |
890 | ||
891 | /* Assigned GOT. Before partitioning multi-GOT each BFD has its own | |
892 | GOT structure. After partitioning several BFD's might [and often do] | |
893 | share a single GOT. */ | |
894 | struct elf_m68k_got *got; | |
895 | }; | |
896 | ||
897 | /* The main data structure holding all the pieces. */ | |
898 | struct elf_m68k_multi_got | |
899 | { | |
900 | /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry | |
901 | here, then it doesn't need a GOT (this includes the case of a BFD | |
902 | having an empty GOT). | |
903 | ||
904 | ??? This hashtable can be replaced by an array indexed by bfd->id. */ | |
905 | htab_t bfd2got; | |
906 | ||
907 | /* Next symndx to assign a global symbol. | |
908 | h->got_entry_key is initialized from this counter. */ | |
909 | unsigned long global_symndx; | |
910 | }; | |
911 | ||
252b5132 RH |
912 | /* m68k ELF linker hash table. */ |
913 | ||
914 | struct elf_m68k_link_hash_table | |
915 | { | |
916 | struct elf_link_hash_table root; | |
b6152c34 | 917 | |
87d72d41 AM |
918 | /* Small local sym cache. */ |
919 | struct sym_cache sym_cache; | |
cc3e26be RS |
920 | |
921 | /* The PLT format used by this link, or NULL if the format has not | |
922 | yet been chosen. */ | |
923 | const struct elf_m68k_plt_info *plt_info; | |
7fb9f789 NC |
924 | |
925 | /* True, if GP is loaded within each function which uses it. | |
926 | Set to TRUE when GOT negative offsets or multi-GOT is enabled. */ | |
927 | bfd_boolean local_gp_p; | |
928 | ||
929 | /* Switch controlling use of negative offsets to double the size of GOTs. */ | |
930 | bfd_boolean use_neg_got_offsets_p; | |
931 | ||
932 | /* Switch controlling generation of multiple GOTs. */ | |
933 | bfd_boolean allow_multigot_p; | |
934 | ||
935 | /* Multi-GOT data structure. */ | |
936 | struct elf_m68k_multi_got multi_got_; | |
252b5132 RH |
937 | }; |
938 | ||
252b5132 RH |
939 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
940 | ||
941 | #define elf_m68k_hash_table(p) \ | |
4dfe6ac6 NC |
942 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
943 | == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 944 | |
7fb9f789 NC |
945 | /* Shortcut to multi-GOT data. */ |
946 | #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_) | |
947 | ||
252b5132 RH |
948 | /* Create an entry in an m68k ELF linker hash table. */ |
949 | ||
950 | static struct bfd_hash_entry * | |
4dfe6ac6 NC |
951 | elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry, |
952 | struct bfd_hash_table *table, | |
953 | const char *string) | |
252b5132 | 954 | { |
0cca5f05 | 955 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
956 | |
957 | /* Allocate the structure if it has not already been allocated by a | |
958 | subclass. */ | |
0cca5f05 AS |
959 | if (ret == NULL) |
960 | ret = bfd_hash_allocate (table, | |
961 | sizeof (struct elf_m68k_link_hash_entry)); | |
962 | if (ret == NULL) | |
963 | return ret; | |
252b5132 RH |
964 | |
965 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
966 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
967 | if (ret != NULL) | |
7fb9f789 NC |
968 | { |
969 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
970 | elf_m68k_hash_entry (ret)->got_entry_key = 0; | |
971 | elf_m68k_hash_entry (ret)->glist = NULL; | |
972 | } | |
252b5132 | 973 | |
0cca5f05 | 974 | return ret; |
252b5132 RH |
975 | } |
976 | ||
977 | /* Create an m68k ELF linker hash table. */ | |
978 | ||
979 | static struct bfd_link_hash_table * | |
4dfe6ac6 | 980 | elf_m68k_link_hash_table_create (bfd *abfd) |
252b5132 RH |
981 | { |
982 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 983 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 984 | |
e2d34d7d | 985 | ret = (struct elf_m68k_link_hash_table *) bfd_malloc (amt); |
252b5132 RH |
986 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
987 | return NULL; | |
988 | ||
66eb6687 AM |
989 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
990 | elf_m68k_link_hash_newfunc, | |
4dfe6ac6 NC |
991 | sizeof (struct elf_m68k_link_hash_entry), |
992 | M68K_ELF_DATA)) | |
252b5132 | 993 | { |
e2d34d7d | 994 | free (ret); |
252b5132 RH |
995 | return NULL; |
996 | } | |
997 | ||
87d72d41 | 998 | ret->sym_cache.abfd = NULL; |
cc3e26be | 999 | ret->plt_info = NULL; |
7fb9f789 NC |
1000 | ret->local_gp_p = FALSE; |
1001 | ret->use_neg_got_offsets_p = FALSE; | |
1002 | ret->allow_multigot_p = FALSE; | |
1003 | ret->multi_got_.bfd2got = NULL; | |
1004 | ret->multi_got_.global_symndx = 1; | |
b6152c34 | 1005 | |
252b5132 RH |
1006 | return &ret->root.root; |
1007 | } | |
1008 | ||
7fb9f789 NC |
1009 | /* Destruct local data. */ |
1010 | ||
1011 | static void | |
1012 | elf_m68k_link_hash_table_free (struct bfd_link_hash_table *_htab) | |
1013 | { | |
1014 | struct elf_m68k_link_hash_table *htab; | |
1015 | ||
1016 | htab = (struct elf_m68k_link_hash_table *) _htab; | |
1017 | ||
1018 | if (htab->multi_got_.bfd2got != NULL) | |
1019 | { | |
1020 | htab_delete (htab->multi_got_.bfd2got); | |
1021 | htab->multi_got_.bfd2got = NULL; | |
1022 | } | |
1023 | } | |
1024 | ||
266abb8f NS |
1025 | /* Set the right machine number. */ |
1026 | ||
1027 | static bfd_boolean | |
1028 | elf32_m68k_object_p (bfd *abfd) | |
1029 | { | |
1030 | unsigned int mach = 0; | |
1031 | unsigned features = 0; | |
1032 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
1033 | ||
425c6cb0 | 1034 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) |
266abb8f | 1035 | features |= m68000; |
425c6cb0 | 1036 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) |
3bdcfdf4 KH |
1037 | features |= cpu32; |
1038 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1039 | features |= fido_a; | |
425c6cb0 | 1040 | else |
266abb8f | 1041 | { |
c694fd50 | 1042 | switch (eflags & EF_M68K_CF_ISA_MASK) |
266abb8f | 1043 | { |
c694fd50 | 1044 | case EF_M68K_CF_ISA_A_NODIV: |
266abb8f NS |
1045 | features |= mcfisa_a; |
1046 | break; | |
c694fd50 | 1047 | case EF_M68K_CF_ISA_A: |
0b2e31dc NS |
1048 | features |= mcfisa_a|mcfhwdiv; |
1049 | break; | |
c694fd50 | 1050 | case EF_M68K_CF_ISA_A_PLUS: |
0b2e31dc NS |
1051 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; |
1052 | break; | |
c694fd50 | 1053 | case EF_M68K_CF_ISA_B_NOUSP: |
0b2e31dc NS |
1054 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; |
1055 | break; | |
c694fd50 | 1056 | case EF_M68K_CF_ISA_B: |
0b2e31dc NS |
1057 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; |
1058 | break; | |
9a2e615a NS |
1059 | case EF_M68K_CF_ISA_C: |
1060 | features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp; | |
1061 | break; | |
8d100c32 KH |
1062 | case EF_M68K_CF_ISA_C_NODIV: |
1063 | features |= mcfisa_a|mcfisa_c|mcfusp; | |
1064 | break; | |
266abb8f | 1065 | } |
c694fd50 | 1066 | switch (eflags & EF_M68K_CF_MAC_MASK) |
266abb8f | 1067 | { |
c694fd50 | 1068 | case EF_M68K_CF_MAC: |
266abb8f NS |
1069 | features |= mcfmac; |
1070 | break; | |
c694fd50 | 1071 | case EF_M68K_CF_EMAC: |
266abb8f NS |
1072 | features |= mcfemac; |
1073 | break; | |
1074 | } | |
c694fd50 | 1075 | if (eflags & EF_M68K_CF_FLOAT) |
266abb8f NS |
1076 | features |= cfloat; |
1077 | } | |
1078 | ||
1079 | mach = bfd_m68k_features_to_mach (features); | |
1080 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
1081 | ||
1082 | return TRUE; | |
1083 | } | |
1084 | ||
fc9f1df9 NC |
1085 | /* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag |
1086 | field based on the machine number. */ | |
1087 | ||
1088 | static void | |
1089 | elf_m68k_final_write_processing (bfd *abfd, | |
1090 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
1091 | { | |
1092 | int mach = bfd_get_mach (abfd); | |
1093 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; | |
1094 | ||
1095 | if (!e_flags) | |
1096 | { | |
1097 | unsigned int arch_mask; | |
1098 | ||
1099 | arch_mask = bfd_m68k_mach_to_features (mach); | |
1100 | ||
1101 | if (arch_mask & m68000) | |
1102 | e_flags = EF_M68K_M68000; | |
1103 | else if (arch_mask & cpu32) | |
1104 | e_flags = EF_M68K_CPU32; | |
1105 | else if (arch_mask & fido_a) | |
1106 | e_flags = EF_M68K_FIDO; | |
1107 | else | |
1108 | { | |
1109 | switch (arch_mask | |
1110 | & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp)) | |
1111 | { | |
1112 | case mcfisa_a: | |
1113 | e_flags |= EF_M68K_CF_ISA_A_NODIV; | |
1114 | break; | |
1115 | case mcfisa_a | mcfhwdiv: | |
1116 | e_flags |= EF_M68K_CF_ISA_A; | |
1117 | break; | |
1118 | case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp: | |
1119 | e_flags |= EF_M68K_CF_ISA_A_PLUS; | |
1120 | break; | |
1121 | case mcfisa_a | mcfisa_b | mcfhwdiv: | |
1122 | e_flags |= EF_M68K_CF_ISA_B_NOUSP; | |
1123 | break; | |
1124 | case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp: | |
1125 | e_flags |= EF_M68K_CF_ISA_B; | |
1126 | break; | |
1127 | case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp: | |
1128 | e_flags |= EF_M68K_CF_ISA_C; | |
1129 | break; | |
1130 | case mcfisa_a | mcfisa_c | mcfusp: | |
1131 | e_flags |= EF_M68K_CF_ISA_C_NODIV; | |
1132 | break; | |
1133 | } | |
1134 | if (arch_mask & mcfmac) | |
1135 | e_flags |= EF_M68K_CF_MAC; | |
1136 | else if (arch_mask & mcfemac) | |
1137 | e_flags |= EF_M68K_CF_EMAC; | |
1138 | if (arch_mask & cfloat) | |
1139 | e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E; | |
1140 | } | |
1141 | elf_elfheader (abfd)->e_flags = e_flags; | |
1142 | } | |
1143 | } | |
1144 | ||
ae9a127f | 1145 | /* Keep m68k-specific flags in the ELF header. */ |
fc9f1df9 | 1146 | |
b34976b6 | 1147 | static bfd_boolean |
9e1281c7 CM |
1148 | elf32_m68k_set_private_flags (abfd, flags) |
1149 | bfd *abfd; | |
1150 | flagword flags; | |
1151 | { | |
1152 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
1153 | elf_flags_init (abfd) = TRUE; |
1154 | return TRUE; | |
9e1281c7 CM |
1155 | } |
1156 | ||
9e1281c7 CM |
1157 | /* Merge backend specific data from an object file to the output |
1158 | object file when linking. */ | |
b34976b6 | 1159 | static bfd_boolean |
9e1281c7 CM |
1160 | elf32_m68k_merge_private_bfd_data (ibfd, obfd) |
1161 | bfd *ibfd; | |
1162 | bfd *obfd; | |
1163 | { | |
1164 | flagword out_flags; | |
1165 | flagword in_flags; | |
a9d34880 RS |
1166 | flagword out_isa; |
1167 | flagword in_isa; | |
1168 | const bfd_arch_info_type *arch_info; | |
7fb9f789 | 1169 | |
9e1281c7 CM |
1170 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1171 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
266abb8f NS |
1172 | return FALSE; |
1173 | ||
a9d34880 RS |
1174 | /* Get the merged machine. This checks for incompatibility between |
1175 | Coldfire & non-Coldfire flags, incompability between different | |
1176 | Coldfire ISAs, and incompability between different MAC types. */ | |
1177 | arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); | |
1178 | if (!arch_info) | |
1179 | return FALSE; | |
9e1281c7 | 1180 | |
7fb9f789 NC |
1181 | bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); |
1182 | ||
1183 | in_flags = elf_elfheader (ibfd)->e_flags; | |
1184 | if (!elf_flags_init (obfd)) | |
1185 | { | |
1186 | elf_flags_init (obfd) = TRUE; | |
1187 | out_flags = in_flags; | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | out_flags = elf_elfheader (obfd)->e_flags; | |
1192 | unsigned int variant_mask; | |
1193 | ||
1194 | if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1195 | variant_mask = 0; | |
1196 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1197 | variant_mask = 0; | |
1198 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1199 | variant_mask = 0; | |
1200 | else | |
1201 | variant_mask = EF_M68K_CF_ISA_MASK; | |
1202 | ||
1203 | in_isa = (in_flags & variant_mask); | |
1204 | out_isa = (out_flags & variant_mask); | |
1205 | if (in_isa > out_isa) | |
1206 | out_flags ^= in_isa ^ out_isa; | |
1207 | if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32 | |
1208 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1209 | || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO | |
1210 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)) | |
1211 | out_flags = EF_M68K_FIDO; | |
1212 | else | |
1213 | out_flags |= in_flags ^ in_isa; | |
1214 | } | |
1215 | elf_elfheader (obfd)->e_flags = out_flags; | |
1216 | ||
1217 | return TRUE; | |
1218 | } | |
1219 | ||
1220 | /* Display the flags field. */ | |
1221 | ||
1222 | static bfd_boolean | |
1223 | elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr) | |
1224 | { | |
1225 | FILE *file = (FILE *) ptr; | |
1226 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
1227 | ||
1228 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1229 | ||
1230 | /* Print normal ELF private data. */ | |
1231 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1232 | ||
1233 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
1234 | ||
1235 | /* xgettext:c-format */ | |
1236 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
1237 | ||
1238 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1239 | fprintf (file, " [m68000]"); | |
1240 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1241 | fprintf (file, " [cpu32]"); | |
1242 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1243 | fprintf (file, " [fido]"); | |
1244 | else | |
1245 | { | |
1246 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E) | |
1247 | fprintf (file, " [cfv4e]"); | |
1248 | ||
1249 | if (eflags & EF_M68K_CF_ISA_MASK) | |
1250 | { | |
1251 | char const *isa = _("unknown"); | |
1252 | char const *mac = _("unknown"); | |
1253 | char const *additional = ""; | |
1254 | ||
1255 | switch (eflags & EF_M68K_CF_ISA_MASK) | |
1256 | { | |
1257 | case EF_M68K_CF_ISA_A_NODIV: | |
1258 | isa = "A"; | |
1259 | additional = " [nodiv]"; | |
1260 | break; | |
1261 | case EF_M68K_CF_ISA_A: | |
1262 | isa = "A"; | |
1263 | break; | |
1264 | case EF_M68K_CF_ISA_A_PLUS: | |
1265 | isa = "A+"; | |
1266 | break; | |
1267 | case EF_M68K_CF_ISA_B_NOUSP: | |
1268 | isa = "B"; | |
1269 | additional = " [nousp]"; | |
1270 | break; | |
1271 | case EF_M68K_CF_ISA_B: | |
1272 | isa = "B"; | |
1273 | break; | |
1274 | case EF_M68K_CF_ISA_C: | |
1275 | isa = "C"; | |
1276 | break; | |
1277 | case EF_M68K_CF_ISA_C_NODIV: | |
1278 | isa = "C"; | |
1279 | additional = " [nodiv]"; | |
1280 | break; | |
1281 | } | |
1282 | fprintf (file, " [isa %s]%s", isa, additional); | |
1283 | ||
1284 | if (eflags & EF_M68K_CF_FLOAT) | |
1285 | fprintf (file, " [float]"); | |
1286 | ||
1287 | switch (eflags & EF_M68K_CF_MAC_MASK) | |
1288 | { | |
1289 | case 0: | |
1290 | mac = NULL; | |
1291 | break; | |
1292 | case EF_M68K_CF_MAC: | |
1293 | mac = "mac"; | |
1294 | break; | |
1295 | case EF_M68K_CF_EMAC: | |
1296 | mac = "emac"; | |
1297 | break; | |
f608cd77 NS |
1298 | case EF_M68K_CF_EMAC_B: |
1299 | mac = "emac_b"; | |
1300 | break; | |
7fb9f789 NC |
1301 | } |
1302 | if (mac) | |
1303 | fprintf (file, " [%s]", mac); | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | fputc ('\n', file); | |
1308 | ||
1309 | return TRUE; | |
1310 | } | |
1311 | ||
1312 | /* Multi-GOT support implementation design: | |
1313 | ||
1314 | Multi-GOT starts in check_relocs hook. There we scan all | |
1315 | relocations of a BFD and build a local GOT (struct elf_m68k_got) | |
1316 | for it. If a single BFD appears to require too many GOT slots with | |
1317 | R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification | |
1318 | to user. | |
1319 | After check_relocs has been invoked for each input BFD, we have | |
1320 | constructed a GOT for each input BFD. | |
1321 | ||
1322 | To minimize total number of GOTs required for a particular output BFD | |
1323 | (as some environments support only 1 GOT per output object) we try | |
1324 | to merge some of the GOTs to share an offset space. Ideally [and in most | |
1325 | cases] we end up with a single GOT. In cases when there are too many | |
1326 | restricted relocations (e.g., R_68K_GOT16O relocations) we end up with | |
1327 | several GOTs, assuming the environment can handle them. | |
1328 | ||
1329 | Partitioning is done in elf_m68k_partition_multi_got. We start with | |
1330 | an empty GOT and traverse bfd2got hashtable putting got_entries from | |
1331 | local GOTs to the new 'big' one. We do that by constructing an | |
1332 | intermediate GOT holding all the entries the local GOT has and the big | |
1333 | GOT lacks. Then we check if there is room in the big GOT to accomodate | |
1334 | all the entries from diff. On success we add those entries to the big | |
1335 | GOT; on failure we start the new 'big' GOT and retry the adding of | |
1336 | entries from the local GOT. Note that this retry will always succeed as | |
1337 | each local GOT doesn't overflow the limits. After partitioning we | |
1338 | end up with each bfd assigned one of the big GOTs. GOT entries in the | |
1339 | big GOTs are initialized with GOT offsets. Note that big GOTs are | |
1340 | positioned consequently in program space and represent a single huge GOT | |
1341 | to the outside world. | |
1342 | ||
1343 | After that we get to elf_m68k_relocate_section. There we | |
1344 | adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol | |
1345 | relocations to refer to appropriate [assigned to current input_bfd] | |
1346 | big GOT. | |
1347 | ||
1348 | Notes: | |
1349 | ||
cf869cce NC |
1350 | GOT entry type: We have several types of GOT entries. |
1351 | * R_8 type is used in entries for symbols that have at least one | |
1352 | R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40 | |
7fb9f789 | 1353 | such entries in one GOT. |
cf869cce NC |
1354 | * R_16 type is used in entries for symbols that have at least one |
1355 | R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations. | |
7fb9f789 | 1356 | We can have at most 0x4000 such entries in one GOT. |
cf869cce NC |
1357 | * R_32 type is used in all other cases. We can have as many |
1358 | such entries in one GOT as we'd like. | |
7fb9f789 NC |
1359 | When counting relocations we have to include the count of the smaller |
1360 | ranged relocations in the counts of the larger ranged ones in order | |
1361 | to correctly detect overflow. | |
1362 | ||
1363 | Sorting the GOT: In each GOT starting offsets are assigned to | |
cf869cce NC |
1364 | R_8 entries, which are followed by R_16 entries, and |
1365 | R_32 entries go at the end. See finalize_got_offsets for details. | |
7fb9f789 NC |
1366 | |
1367 | Negative GOT offsets: To double usable offset range of GOTs we use | |
1368 | negative offsets. As we assign entries with GOT offsets relative to | |
1369 | start of .got section, the offset values are positive. They become | |
1370 | negative only in relocate_section where got->offset value is | |
1371 | subtracted from them. | |
1372 | ||
1373 | 3 special GOT entries: There are 3 special GOT entries used internally | |
1374 | by loader. These entries happen to be placed to .got.plt section, | |
1375 | so we don't do anything about them in multi-GOT support. | |
1376 | ||
1377 | Memory management: All data except for hashtables | |
1378 | multi_got->bfd2got and got->entries are allocated on | |
1379 | elf_hash_table (info)->dynobj bfd (for this reason we pass 'info' | |
1380 | to most functions), so we don't need to care to free them. At the | |
1381 | moment of allocation hashtables are being linked into main data | |
1382 | structure (multi_got), all pieces of which are reachable from | |
1383 | elf_m68k_multi_got (info). We deallocate them in | |
1384 | elf_m68k_link_hash_table_free. */ | |
1385 | ||
1386 | /* Initialize GOT. */ | |
1387 | ||
1388 | static void | |
cf869cce NC |
1389 | elf_m68k_init_got (struct elf_m68k_got *got) |
1390 | { | |
1391 | got->entries = NULL; | |
1392 | got->n_slots[R_8] = 0; | |
1393 | got->n_slots[R_16] = 0; | |
1394 | got->n_slots[R_32] = 0; | |
1395 | got->local_n_slots = 0; | |
1396 | got->offset = (bfd_vma) -1; | |
7fb9f789 NC |
1397 | } |
1398 | ||
1399 | /* Destruct GOT. */ | |
1400 | ||
1401 | static void | |
1402 | elf_m68k_clear_got (struct elf_m68k_got *got) | |
1403 | { | |
1404 | if (got->entries != NULL) | |
1405 | { | |
1406 | htab_delete (got->entries); | |
1407 | got->entries = NULL; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | /* Create and empty GOT structure. INFO is the context where memory | |
1412 | should be allocated. */ | |
1413 | ||
1414 | static struct elf_m68k_got * | |
1415 | elf_m68k_create_empty_got (struct bfd_link_info *info) | |
1416 | { | |
1417 | struct elf_m68k_got *got; | |
1418 | ||
1419 | got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got)); | |
1420 | if (got == NULL) | |
1421 | return NULL; | |
1422 | ||
cf869cce | 1423 | elf_m68k_init_got (got); |
7fb9f789 NC |
1424 | |
1425 | return got; | |
1426 | } | |
1427 | ||
1428 | /* Initialize KEY. */ | |
1429 | ||
1430 | static void | |
1431 | elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key, | |
1432 | struct elf_link_hash_entry *h, | |
cf869cce NC |
1433 | const bfd *abfd, unsigned long symndx, |
1434 | enum elf_m68k_reloc_type reloc_type) | |
7fb9f789 | 1435 | { |
cf869cce NC |
1436 | if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32) |
1437 | /* All TLS_LDM relocations share a single GOT entry. */ | |
1438 | { | |
1439 | key->bfd = NULL; | |
1440 | key->symndx = 0; | |
1441 | } | |
1442 | else if (h != NULL) | |
1443 | /* Global symbols are identified with their got_entry_key. */ | |
7fb9f789 NC |
1444 | { |
1445 | key->bfd = NULL; | |
1446 | key->symndx = elf_m68k_hash_entry (h)->got_entry_key; | |
1447 | BFD_ASSERT (key->symndx != 0); | |
1448 | } | |
1449 | else | |
cf869cce | 1450 | /* Local symbols are identified by BFD they appear in and symndx. */ |
7fb9f789 NC |
1451 | { |
1452 | key->bfd = abfd; | |
1453 | key->symndx = symndx; | |
1454 | } | |
cf869cce NC |
1455 | |
1456 | key->type = reloc_type; | |
7fb9f789 NC |
1457 | } |
1458 | ||
1459 | /* Calculate hash of got_entry. | |
1460 | ??? Is it good? */ | |
1461 | ||
1462 | static hashval_t | |
1463 | elf_m68k_got_entry_hash (const void *_entry) | |
1464 | { | |
1465 | const struct elf_m68k_got_entry_key *key; | |
1466 | ||
1467 | key = &((const struct elf_m68k_got_entry *) _entry)->key_; | |
1468 | ||
cf869cce NC |
1469 | return (key->symndx |
1470 | + (key->bfd != NULL ? (int) key->bfd->id : -1) | |
1471 | + elf_m68k_reloc_got_type (key->type)); | |
7fb9f789 NC |
1472 | } |
1473 | ||
1474 | /* Check if two got entries are equal. */ | |
1475 | ||
1476 | static int | |
1477 | elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2) | |
1478 | { | |
1479 | const struct elf_m68k_got_entry_key *key1; | |
1480 | const struct elf_m68k_got_entry_key *key2; | |
1481 | ||
1482 | key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_; | |
1483 | key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_; | |
1484 | ||
1485 | return (key1->bfd == key2->bfd | |
cf869cce NC |
1486 | && key1->symndx == key2->symndx |
1487 | && (elf_m68k_reloc_got_type (key1->type) | |
1488 | == elf_m68k_reloc_got_type (key2->type))); | |
7fb9f789 NC |
1489 | } |
1490 | ||
cf869cce NC |
1491 | /* When using negative offsets, we allocate one extra R_8, one extra R_16 |
1492 | and one extra R_32 slots to simplify handling of 2-slot entries during | |
1493 | offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */ | |
1494 | ||
1495 | /* Maximal number of R_8 slots in a single GOT. */ | |
1496 | #define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1497 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1498 | ? (0x40 - 1) \ |
7fb9f789 NC |
1499 | : 0x20) |
1500 | ||
cf869cce NC |
1501 | /* Maximal number of R_8 and R_16 slots in a single GOT. */ |
1502 | #define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1503 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1504 | ? (0x4000 - 2) \ |
7fb9f789 NC |
1505 | : 0x2000) |
1506 | ||
1507 | /* SEARCH - simply search the hashtable, don't insert new entries or fail when | |
1508 | the entry cannot be found. | |
1509 | FIND_OR_CREATE - search for an existing entry, but create new if there's | |
1510 | no such. | |
1511 | MUST_FIND - search for an existing entry and assert that it exist. | |
1512 | MUST_CREATE - assert that there's no such entry and create new one. */ | |
1513 | enum elf_m68k_get_entry_howto | |
1514 | { | |
1515 | SEARCH, | |
1516 | FIND_OR_CREATE, | |
1517 | MUST_FIND, | |
1518 | MUST_CREATE | |
1519 | }; | |
1520 | ||
1521 | /* Get or create (depending on HOWTO) entry with KEY in GOT. | |
1522 | INFO is context in which memory should be allocated (can be NULL if | |
1523 | HOWTO is SEARCH or MUST_FIND). */ | |
1524 | ||
1525 | static struct elf_m68k_got_entry * | |
1526 | elf_m68k_get_got_entry (struct elf_m68k_got *got, | |
1527 | const struct elf_m68k_got_entry_key *key, | |
1528 | enum elf_m68k_get_entry_howto howto, | |
1529 | struct bfd_link_info *info) | |
1530 | { | |
1531 | struct elf_m68k_got_entry entry_; | |
1532 | struct elf_m68k_got_entry *entry; | |
1533 | void **ptr; | |
1534 | ||
1535 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1536 | ||
1537 | if (got->entries == NULL) | |
1538 | /* This is the first entry in ABFD. Initialize hashtable. */ | |
1539 | { | |
1540 | if (howto == SEARCH) | |
1541 | return NULL; | |
1542 | ||
cf869cce | 1543 | got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT |
7fb9f789 NC |
1544 | (info), |
1545 | elf_m68k_got_entry_hash, | |
1546 | elf_m68k_got_entry_eq, NULL); | |
1547 | if (got->entries == NULL) | |
1548 | { | |
1549 | bfd_set_error (bfd_error_no_memory); | |
1550 | return NULL; | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | entry_.key_ = *key; | |
1555 | ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH | |
1556 | ? INSERT : NO_INSERT)); | |
1557 | if (ptr == NULL) | |
1558 | { | |
1559 | if (howto == SEARCH) | |
1560 | /* Entry not found. */ | |
1561 | return NULL; | |
1562 | ||
1563 | /* We're out of memory. */ | |
1564 | bfd_set_error (bfd_error_no_memory); | |
1565 | return NULL; | |
1566 | } | |
1567 | ||
1568 | if (*ptr == NULL) | |
1569 | /* We didn't find the entry and we're asked to create a new one. */ | |
1570 | { | |
1571 | BFD_ASSERT (howto != MUST_FIND && howto != SEARCH); | |
1572 | ||
1573 | entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)); | |
1574 | if (entry == NULL) | |
1575 | return NULL; | |
1576 | ||
1577 | /* Initialize new entry. */ | |
1578 | entry->key_ = *key; | |
1579 | ||
1580 | entry->u.s1.refcount = 0; | |
cf869cce NC |
1581 | |
1582 | /* Mark the entry as not initialized. */ | |
1583 | entry->key_.type = R_68K_max; | |
7fb9f789 NC |
1584 | |
1585 | *ptr = entry; | |
1586 | } | |
1587 | else | |
1588 | /* We found the entry. */ | |
1589 | { | |
1590 | BFD_ASSERT (howto != MUST_CREATE); | |
1591 | ||
1592 | entry = *ptr; | |
1593 | } | |
1594 | ||
1595 | return entry; | |
1596 | } | |
1597 | ||
1598 | /* Update GOT counters when merging entry of WAS type with entry of NEW type. | |
1599 | Return the value to which ENTRY's type should be set. */ | |
1600 | ||
cf869cce NC |
1601 | static enum elf_m68k_reloc_type |
1602 | elf_m68k_update_got_entry_type (struct elf_m68k_got *got, | |
1603 | enum elf_m68k_reloc_type was, | |
d3ce72d0 | 1604 | enum elf_m68k_reloc_type new_reloc) |
7fb9f789 | 1605 | { |
cf869cce NC |
1606 | enum elf_m68k_got_offset_size was_size; |
1607 | enum elf_m68k_got_offset_size new_size; | |
1608 | bfd_vma n_slots; | |
1609 | ||
1610 | if (was == R_68K_max) | |
1611 | /* The type of the entry is not initialized yet. */ | |
7fb9f789 | 1612 | { |
cf869cce NC |
1613 | /* Update all got->n_slots counters, including n_slots[R_32]. */ |
1614 | was_size = R_LAST; | |
7fb9f789 | 1615 | |
d3ce72d0 | 1616 | was = new_reloc; |
7fb9f789 | 1617 | } |
7fb9f789 | 1618 | else |
cf869cce NC |
1619 | { |
1620 | /* !!! We, probably, should emit an error rather then fail on assert | |
1621 | in such a case. */ | |
1622 | BFD_ASSERT (elf_m68k_reloc_got_type (was) | |
d3ce72d0 | 1623 | == elf_m68k_reloc_got_type (new_reloc)); |
cf869cce NC |
1624 | |
1625 | was_size = elf_m68k_reloc_got_offset_size (was); | |
1626 | } | |
1627 | ||
d3ce72d0 NC |
1628 | new_size = elf_m68k_reloc_got_offset_size (new_reloc); |
1629 | n_slots = elf_m68k_reloc_got_n_slots (new_reloc); | |
cf869cce NC |
1630 | |
1631 | while (was_size > new_size) | |
1632 | { | |
1633 | --was_size; | |
1634 | got->n_slots[was_size] += n_slots; | |
1635 | } | |
7fb9f789 | 1636 | |
d3ce72d0 | 1637 | if (new_reloc > was) |
cf869cce NC |
1638 | /* Relocations are ordered from bigger got offset size to lesser, |
1639 | so choose the relocation type with lesser offset size. */ | |
d3ce72d0 | 1640 | was = new_reloc; |
cf869cce NC |
1641 | |
1642 | return was; | |
7fb9f789 NC |
1643 | } |
1644 | ||
1645 | /* Update GOT counters when removing an entry of type TYPE. */ | |
1646 | ||
1647 | static void | |
cf869cce NC |
1648 | elf_m68k_remove_got_entry_type (struct elf_m68k_got *got, |
1649 | enum elf_m68k_reloc_type type) | |
7fb9f789 | 1650 | { |
cf869cce NC |
1651 | enum elf_m68k_got_offset_size os; |
1652 | bfd_vma n_slots; | |
7fb9f789 | 1653 | |
cf869cce | 1654 | n_slots = elf_m68k_reloc_got_n_slots (type); |
7fb9f789 | 1655 | |
cf869cce NC |
1656 | /* Decrese counter of slots with offset size corresponding to TYPE |
1657 | and all greater offset sizes. */ | |
1658 | for (os = elf_m68k_reloc_got_offset_size (type); os <= R_32; ++os) | |
1659 | { | |
1660 | BFD_ASSERT (got->n_slots[os] >= n_slots); | |
7fb9f789 | 1661 | |
cf869cce | 1662 | got->n_slots[os] -= n_slots; |
7fb9f789 NC |
1663 | } |
1664 | } | |
1665 | ||
1666 | /* Add new or update existing entry to GOT. | |
1667 | H, ABFD, TYPE and SYMNDX is data for the entry. | |
1668 | INFO is a context where memory should be allocated. */ | |
1669 | ||
1670 | static struct elf_m68k_got_entry * | |
1671 | elf_m68k_add_entry_to_got (struct elf_m68k_got *got, | |
1672 | struct elf_link_hash_entry *h, | |
1673 | const bfd *abfd, | |
cf869cce NC |
1674 | enum elf_m68k_reloc_type reloc_type, |
1675 | unsigned long symndx, | |
7fb9f789 NC |
1676 | struct bfd_link_info *info) |
1677 | { | |
1678 | struct elf_m68k_got_entry_key key_; | |
1679 | struct elf_m68k_got_entry *entry; | |
1680 | ||
1681 | if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0) | |
1682 | elf_m68k_hash_entry (h)->got_entry_key | |
1683 | = elf_m68k_multi_got (info)->global_symndx++; | |
1684 | ||
cf869cce | 1685 | elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type); |
7fb9f789 NC |
1686 | |
1687 | entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info); | |
1688 | if (entry == NULL) | |
1689 | return NULL; | |
1690 | ||
cf869cce NC |
1691 | /* Determine entry's type and update got->n_slots counters. */ |
1692 | entry->key_.type = elf_m68k_update_got_entry_type (got, | |
1693 | entry->key_.type, | |
1694 | reloc_type); | |
1695 | ||
7fb9f789 NC |
1696 | /* Update refcount. */ |
1697 | ++entry->u.s1.refcount; | |
1698 | ||
1699 | if (entry->u.s1.refcount == 1) | |
1700 | /* We see this entry for the first time. */ | |
1701 | { | |
1702 | if (entry->key_.bfd != NULL) | |
cf869cce | 1703 | got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type); |
7fb9f789 NC |
1704 | } |
1705 | ||
cf869cce | 1706 | BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots); |
7fb9f789 | 1707 | |
cf869cce NC |
1708 | if ((got->n_slots[R_8] |
1709 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1710 | || (got->n_slots[R_16] | |
1711 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1712 | /* This BFD has too many relocation. */ |
1713 | { | |
cf869cce | 1714 | if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) |
7fb9f789 | 1715 | (*_bfd_error_handler) (_("%B: GOT overflow: " |
cf869cce NC |
1716 | "Number of relocations with 8-bit " |
1717 | "offset > %d"), | |
7fb9f789 | 1718 | abfd, |
cf869cce | 1719 | ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)); |
7fb9f789 NC |
1720 | else |
1721 | (*_bfd_error_handler) (_("%B: GOT overflow: " | |
cf869cce NC |
1722 | "Number of relocations with 8- or 16-bit " |
1723 | "offset > %d"), | |
7fb9f789 | 1724 | abfd, |
cf869cce | 1725 | ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)); |
7fb9f789 NC |
1726 | |
1727 | return NULL; | |
1728 | } | |
1729 | ||
1730 | return entry; | |
1731 | } | |
1732 | ||
1733 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
1734 | ||
1735 | static hashval_t | |
1736 | elf_m68k_bfd2got_entry_hash (const void *entry) | |
1737 | { | |
1738 | const struct elf_m68k_bfd2got_entry *e; | |
1739 | ||
1740 | e = (const struct elf_m68k_bfd2got_entry *) entry; | |
1741 | ||
1742 | return e->bfd->id; | |
1743 | } | |
1744 | ||
1745 | /* Check whether two hash entries have the same bfd. */ | |
1746 | ||
1747 | static int | |
1748 | elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2) | |
1749 | { | |
1750 | const struct elf_m68k_bfd2got_entry *e1; | |
1751 | const struct elf_m68k_bfd2got_entry *e2; | |
1752 | ||
1753 | e1 = (const struct elf_m68k_bfd2got_entry *) entry1; | |
1754 | e2 = (const struct elf_m68k_bfd2got_entry *) entry2; | |
1755 | ||
1756 | return e1->bfd == e2->bfd; | |
1757 | } | |
1758 | ||
1759 | /* Destruct a bfd2got entry. */ | |
1760 | ||
1761 | static void | |
1762 | elf_m68k_bfd2got_entry_del (void *_entry) | |
1763 | { | |
1764 | struct elf_m68k_bfd2got_entry *entry; | |
1765 | ||
1766 | entry = (struct elf_m68k_bfd2got_entry *) _entry; | |
1767 | ||
1768 | BFD_ASSERT (entry->got != NULL); | |
1769 | elf_m68k_clear_got (entry->got); | |
1770 | } | |
1771 | ||
1772 | /* Find existing or create new (depending on HOWTO) bfd2got entry in | |
1773 | MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where | |
1774 | memory should be allocated. */ | |
1775 | ||
1776 | static struct elf_m68k_bfd2got_entry * | |
1777 | elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got, | |
1778 | const bfd *abfd, | |
1779 | enum elf_m68k_get_entry_howto howto, | |
1780 | struct bfd_link_info *info) | |
1781 | { | |
1782 | struct elf_m68k_bfd2got_entry entry_; | |
1783 | void **ptr; | |
1784 | struct elf_m68k_bfd2got_entry *entry; | |
1785 | ||
1786 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1787 | ||
1788 | if (multi_got->bfd2got == NULL) | |
1789 | /* This is the first GOT. Initialize bfd2got. */ | |
1790 | { | |
1791 | if (howto == SEARCH) | |
1792 | return NULL; | |
1793 | ||
1794 | multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash, | |
1795 | elf_m68k_bfd2got_entry_eq, | |
1796 | elf_m68k_bfd2got_entry_del); | |
1797 | if (multi_got->bfd2got == NULL) | |
1798 | { | |
1799 | bfd_set_error (bfd_error_no_memory); | |
1800 | return NULL; | |
1801 | } | |
1802 | } | |
1803 | ||
1804 | entry_.bfd = abfd; | |
1805 | ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH | |
1806 | ? INSERT : NO_INSERT)); | |
1807 | if (ptr == NULL) | |
1808 | { | |
1809 | if (howto == SEARCH) | |
1810 | /* Entry not found. */ | |
1811 | return NULL; | |
1812 | ||
1813 | /* We're out of memory. */ | |
1814 | bfd_set_error (bfd_error_no_memory); | |
1815 | return NULL; | |
1816 | } | |
1817 | ||
1818 | if (*ptr == NULL) | |
1819 | /* Entry was not found. Create new one. */ | |
1820 | { | |
1821 | BFD_ASSERT (howto != MUST_FIND && howto != SEARCH); | |
1822 | ||
1823 | entry = ((struct elf_m68k_bfd2got_entry *) | |
1824 | bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry))); | |
1825 | if (entry == NULL) | |
1826 | return NULL; | |
1827 | ||
1828 | entry->bfd = abfd; | |
1829 | ||
1830 | entry->got = elf_m68k_create_empty_got (info); | |
1831 | if (entry->got == NULL) | |
1832 | return NULL; | |
1833 | ||
1834 | *ptr = entry; | |
1835 | } | |
1836 | else | |
1837 | { | |
1838 | BFD_ASSERT (howto != MUST_CREATE); | |
1839 | ||
1840 | /* Return existing entry. */ | |
1841 | entry = *ptr; | |
1842 | } | |
1843 | ||
1844 | return entry; | |
1845 | } | |
1846 | ||
1847 | struct elf_m68k_can_merge_gots_arg | |
1848 | { | |
1849 | /* A current_got that we constructing a DIFF against. */ | |
1850 | struct elf_m68k_got *big; | |
1851 | ||
1852 | /* GOT holding entries not present or that should be changed in | |
1853 | BIG. */ | |
1854 | struct elf_m68k_got *diff; | |
1855 | ||
1856 | /* Context where to allocate memory. */ | |
1857 | struct bfd_link_info *info; | |
1858 | ||
1859 | /* Error flag. */ | |
1860 | bfd_boolean error_p; | |
1861 | }; | |
1862 | ||
1863 | /* Process a single entry from the small GOT to see if it should be added | |
1864 | or updated in the big GOT. */ | |
1865 | ||
1866 | static int | |
1867 | elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg) | |
1868 | { | |
1869 | const struct elf_m68k_got_entry *entry1; | |
1870 | struct elf_m68k_can_merge_gots_arg *arg; | |
1871 | const struct elf_m68k_got_entry *entry2; | |
cf869cce | 1872 | enum elf_m68k_reloc_type type; |
7fb9f789 NC |
1873 | |
1874 | entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr; | |
1875 | arg = (struct elf_m68k_can_merge_gots_arg *) _arg; | |
1876 | ||
1877 | entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL); | |
1878 | ||
1879 | if (entry2 != NULL) | |
cf869cce | 1880 | /* We found an existing entry. Check if we should update it. */ |
7fb9f789 | 1881 | { |
cf869cce NC |
1882 | type = elf_m68k_update_got_entry_type (arg->diff, |
1883 | entry2->key_.type, | |
1884 | entry1->key_.type); | |
7fb9f789 | 1885 | |
cf869cce | 1886 | if (type == entry2->key_.type) |
7fb9f789 NC |
1887 | /* ENTRY1 doesn't update data in ENTRY2. Skip it. |
1888 | To skip creation of difference entry we use the type, | |
1889 | which we won't see in GOT entries for sure. */ | |
cf869cce | 1890 | type = R_68K_max; |
7fb9f789 NC |
1891 | } |
1892 | else | |
cf869cce | 1893 | /* We didn't find the entry. Add entry1 to DIFF. */ |
7fb9f789 | 1894 | { |
cf869cce | 1895 | BFD_ASSERT (entry1->key_.type != R_68K_max); |
7fb9f789 | 1896 | |
cf869cce NC |
1897 | type = elf_m68k_update_got_entry_type (arg->diff, |
1898 | R_68K_max, entry1->key_.type); | |
7fb9f789 | 1899 | |
7fb9f789 | 1900 | if (entry1->key_.bfd != NULL) |
cf869cce | 1901 | arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type); |
7fb9f789 NC |
1902 | } |
1903 | ||
cf869cce | 1904 | if (type != R_68K_max) |
7fb9f789 NC |
1905 | /* Create an entry in DIFF. */ |
1906 | { | |
1907 | struct elf_m68k_got_entry *entry; | |
1908 | ||
1909 | entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE, | |
1910 | arg->info); | |
1911 | if (entry == NULL) | |
1912 | { | |
1913 | arg->error_p = TRUE; | |
1914 | return 0; | |
1915 | } | |
1916 | ||
cf869cce | 1917 | entry->key_.type = type; |
7fb9f789 NC |
1918 | } |
1919 | ||
1920 | return 1; | |
1921 | } | |
1922 | ||
1923 | /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it. | |
1924 | Construct DIFF GOT holding the entries which should be added or updated | |
1925 | in BIG GOT to accumulate information from SMALL. | |
1926 | INFO is the context where memory should be allocated. */ | |
1927 | ||
1928 | static bfd_boolean | |
1929 | elf_m68k_can_merge_gots (struct elf_m68k_got *big, | |
1930 | const struct elf_m68k_got *small, | |
1931 | struct bfd_link_info *info, | |
1932 | struct elf_m68k_got *diff) | |
1933 | { | |
1934 | struct elf_m68k_can_merge_gots_arg arg_; | |
1935 | ||
1936 | BFD_ASSERT (small->offset == (bfd_vma) -1); | |
1937 | ||
1938 | arg_.big = big; | |
1939 | arg_.diff = diff; | |
1940 | arg_.info = info; | |
1941 | arg_.error_p = FALSE; | |
1942 | htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_); | |
1943 | if (arg_.error_p) | |
1944 | { | |
1945 | diff->offset = 0; | |
1946 | return FALSE; | |
1947 | } | |
1948 | ||
1949 | /* Check for overflow. */ | |
cf869cce NC |
1950 | if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8] |
1951 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1952 | || (big->n_slots[R_16] + arg_.diff->n_slots[R_16] | |
1953 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1954 | return FALSE; |
1955 | ||
1956 | return TRUE; | |
1957 | } | |
1958 | ||
1959 | struct elf_m68k_merge_gots_arg | |
1960 | { | |
1961 | /* The BIG got. */ | |
1962 | struct elf_m68k_got *big; | |
1963 | ||
1964 | /* Context where memory should be allocated. */ | |
1965 | struct bfd_link_info *info; | |
1966 | ||
1967 | /* Error flag. */ | |
1968 | bfd_boolean error_p; | |
1969 | }; | |
1970 | ||
1971 | /* Process a single entry from DIFF got. Add or update corresponding | |
1972 | entry in the BIG got. */ | |
1973 | ||
1974 | static int | |
1975 | elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg) | |
1976 | { | |
1977 | const struct elf_m68k_got_entry *from; | |
1978 | struct elf_m68k_merge_gots_arg *arg; | |
1979 | struct elf_m68k_got_entry *to; | |
1980 | ||
1981 | from = (const struct elf_m68k_got_entry *) *entry_ptr; | |
1982 | arg = (struct elf_m68k_merge_gots_arg *) _arg; | |
1983 | ||
1984 | to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE, | |
1985 | arg->info); | |
1986 | if (to == NULL) | |
1987 | { | |
1988 | arg->error_p = TRUE; | |
1989 | return 0; | |
1990 | } | |
1991 | ||
1992 | BFD_ASSERT (to->u.s1.refcount == 0); | |
1993 | /* All we need to merge is TYPE. */ | |
cf869cce | 1994 | to->key_.type = from->key_.type; |
7fb9f789 NC |
1995 | |
1996 | return 1; | |
1997 | } | |
1998 | ||
1999 | /* Merge data from DIFF to BIG. INFO is context where memory should be | |
2000 | allocated. */ | |
2001 | ||
2002 | static bfd_boolean | |
2003 | elf_m68k_merge_gots (struct elf_m68k_got *big, | |
2004 | struct elf_m68k_got *diff, | |
2005 | struct bfd_link_info *info) | |
2006 | { | |
2007 | if (diff->entries != NULL) | |
2008 | /* DIFF is not empty. Merge it into BIG GOT. */ | |
2009 | { | |
2010 | struct elf_m68k_merge_gots_arg arg_; | |
2011 | ||
2012 | /* Merge entries. */ | |
2013 | arg_.big = big; | |
2014 | arg_.info = info; | |
2015 | arg_.error_p = FALSE; | |
2016 | htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_); | |
2017 | if (arg_.error_p) | |
2018 | return FALSE; | |
2019 | ||
2020 | /* Merge counters. */ | |
cf869cce NC |
2021 | big->n_slots[R_8] += diff->n_slots[R_8]; |
2022 | big->n_slots[R_16] += diff->n_slots[R_16]; | |
2023 | big->n_slots[R_32] += diff->n_slots[R_32]; | |
2024 | big->local_n_slots += diff->local_n_slots; | |
7fb9f789 NC |
2025 | } |
2026 | else | |
2027 | /* DIFF is empty. */ | |
2028 | { | |
cf869cce NC |
2029 | BFD_ASSERT (diff->n_slots[R_8] == 0); |
2030 | BFD_ASSERT (diff->n_slots[R_16] == 0); | |
2031 | BFD_ASSERT (diff->n_slots[R_32] == 0); | |
2032 | BFD_ASSERT (diff->local_n_slots == 0); | |
7fb9f789 NC |
2033 | } |
2034 | ||
2035 | BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p | |
cf869cce NC |
2036 | || ((big->n_slots[R_8] |
2037 | <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
2038 | && (big->n_slots[R_16] | |
2039 | <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))); | |
7fb9f789 NC |
2040 | |
2041 | return TRUE; | |
2042 | } | |
2043 | ||
2044 | struct elf_m68k_finalize_got_offsets_arg | |
2045 | { | |
cf869cce NC |
2046 | /* Ranges of the offsets for GOT entries. |
2047 | R_x entries receive offsets between offset1[R_x] and offset2[R_x]. | |
2048 | R_x is R_8, R_16 and R_32. */ | |
2049 | bfd_vma *offset1; | |
2050 | bfd_vma *offset2; | |
7fb9f789 NC |
2051 | |
2052 | /* Mapping from global symndx to global symbols. | |
2053 | This is used to build lists of got entries for global symbols. */ | |
2054 | struct elf_m68k_link_hash_entry **symndx2h; | |
cf869cce NC |
2055 | |
2056 | bfd_vma n_ldm_entries; | |
7fb9f789 NC |
2057 | }; |
2058 | ||
2059 | /* Assign ENTRY an offset. Build list of GOT entries for global symbols | |
2060 | along the way. */ | |
2061 | ||
2062 | static int | |
2063 | elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg) | |
2064 | { | |
2065 | struct elf_m68k_got_entry *entry; | |
2066 | struct elf_m68k_finalize_got_offsets_arg *arg; | |
2067 | ||
cf869cce NC |
2068 | enum elf_m68k_got_offset_size got_offset_size; |
2069 | bfd_vma entry_size; | |
2070 | ||
7fb9f789 NC |
2071 | entry = (struct elf_m68k_got_entry *) *entry_ptr; |
2072 | arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg; | |
2073 | ||
2074 | /* This should be a fresh entry created in elf_m68k_can_merge_gots. */ | |
2075 | BFD_ASSERT (entry->u.s1.refcount == 0); | |
2076 | ||
cf869cce NC |
2077 | /* Get GOT offset size for the entry . */ |
2078 | got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type); | |
7fb9f789 | 2079 | |
cf869cce NC |
2080 | /* Calculate entry size in bytes. */ |
2081 | entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type); | |
7fb9f789 | 2082 | |
cf869cce NC |
2083 | /* Check if we should switch to negative range of the offsets. */ |
2084 | if (arg->offset1[got_offset_size] + entry_size | |
2085 | > arg->offset2[got_offset_size]) | |
2086 | { | |
2087 | /* Verify that this is the only switch to negative range for | |
2088 | got_offset_size. If this assertion fails, then we've miscalculated | |
2089 | range for got_offset_size entries in | |
2090 | elf_m68k_finalize_got_offsets. */ | |
2091 | BFD_ASSERT (arg->offset2[got_offset_size] | |
2092 | != arg->offset2[-(int) got_offset_size - 1]); | |
2093 | ||
2094 | /* Switch. */ | |
2095 | arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1]; | |
2096 | arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1]; | |
2097 | ||
2098 | /* Verify that now we have enough room for the entry. */ | |
2099 | BFD_ASSERT (arg->offset1[got_offset_size] + entry_size | |
2100 | <= arg->offset2[got_offset_size]); | |
7fb9f789 NC |
2101 | } |
2102 | ||
cf869cce NC |
2103 | /* Assign offset to entry. */ |
2104 | entry->u.s2.offset = arg->offset1[got_offset_size]; | |
2105 | arg->offset1[got_offset_size] += entry_size; | |
2106 | ||
7fb9f789 NC |
2107 | if (entry->key_.bfd == NULL) |
2108 | /* Hook up this entry into the list of got_entries of H. */ | |
2109 | { | |
2110 | struct elf_m68k_link_hash_entry *h; | |
2111 | ||
7fb9f789 | 2112 | h = arg->symndx2h[entry->key_.symndx]; |
cf869cce NC |
2113 | if (h != NULL) |
2114 | { | |
2115 | entry->u.s2.next = h->glist; | |
2116 | h->glist = entry; | |
2117 | } | |
2118 | else | |
2119 | /* This should be the entry for TLS_LDM relocation then. */ | |
2120 | { | |
2121 | BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type) | |
2122 | == R_68K_TLS_LDM32) | |
2123 | && entry->key_.symndx == 0); | |
7fb9f789 | 2124 | |
cf869cce NC |
2125 | ++arg->n_ldm_entries; |
2126 | } | |
7fb9f789 NC |
2127 | } |
2128 | else | |
2129 | /* This entry is for local symbol. */ | |
2130 | entry->u.s2.next = NULL; | |
2131 | ||
2132 | return 1; | |
2133 | } | |
2134 | ||
2135 | /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we | |
2136 | should use negative offsets. | |
2137 | Build list of GOT entries for global symbols along the way. | |
2138 | SYMNDX2H is mapping from global symbol indices to actual | |
cf869cce NC |
2139 | global symbols. |
2140 | Return offset at which next GOT should start. */ | |
7fb9f789 NC |
2141 | |
2142 | static void | |
2143 | elf_m68k_finalize_got_offsets (struct elf_m68k_got *got, | |
2144 | bfd_boolean use_neg_got_offsets_p, | |
cf869cce NC |
2145 | struct elf_m68k_link_hash_entry **symndx2h, |
2146 | bfd_vma *final_offset, bfd_vma *n_ldm_entries) | |
7fb9f789 NC |
2147 | { |
2148 | struct elf_m68k_finalize_got_offsets_arg arg_; | |
cf869cce NC |
2149 | bfd_vma offset1_[2 * R_LAST]; |
2150 | bfd_vma offset2_[2 * R_LAST]; | |
2151 | int i; | |
2152 | bfd_vma start_offset; | |
7fb9f789 NC |
2153 | |
2154 | BFD_ASSERT (got->offset != (bfd_vma) -1); | |
2155 | ||
2156 | /* We set entry offsets relative to the .got section (and not the | |
2157 | start of a particular GOT), so that we can use them in | |
cf869cce | 2158 | finish_dynamic_symbol without needing to know the GOT which they come |
7fb9f789 NC |
2159 | from. */ |
2160 | ||
cf869cce NC |
2161 | /* Put offset1 in the middle of offset1_, same for offset2. */ |
2162 | arg_.offset1 = offset1_ + R_LAST; | |
2163 | arg_.offset2 = offset2_ + R_LAST; | |
2164 | ||
2165 | start_offset = got->offset; | |
2166 | ||
7fb9f789 | 2167 | if (use_neg_got_offsets_p) |
cf869cce NC |
2168 | /* Setup both negative and positive ranges for R_8, R_16 and R_32. */ |
2169 | i = -(int) R_32 - 1; | |
2170 | else | |
2171 | /* Setup positives ranges for R_8, R_16 and R_32. */ | |
2172 | i = (int) R_8; | |
2173 | ||
2174 | for (; i <= (int) R_32; ++i) | |
7fb9f789 | 2175 | { |
cf869cce | 2176 | int j; |
7fb9f789 NC |
2177 | size_t n; |
2178 | ||
cf869cce NC |
2179 | /* Set beginning of the range of offsets I. */ |
2180 | arg_.offset1[i] = start_offset; | |
7fb9f789 | 2181 | |
cf869cce NC |
2182 | /* Calculate number of slots that require I offsets. */ |
2183 | j = (i >= 0) ? i : -i - 1; | |
2184 | n = (j >= 1) ? got->n_slots[j - 1] : 0; | |
2185 | n = got->n_slots[j] - n; | |
7fb9f789 | 2186 | |
cf869cce NC |
2187 | if (use_neg_got_offsets_p && n != 0) |
2188 | { | |
2189 | if (i < 0) | |
2190 | /* We first fill the positive side of the range, so we might | |
2191 | end up with one empty slot at that side when we can't fit | |
2192 | whole 2-slot entry. Account for that at negative side of | |
2193 | the interval with one additional entry. */ | |
2194 | n = n / 2 + 1; | |
2195 | else | |
2196 | /* When the number of slots is odd, make positive side of the | |
2197 | range one entry bigger. */ | |
2198 | n = (n + 1) / 2; | |
2199 | } | |
2200 | ||
2201 | /* N is the number of slots that require I offsets. | |
2202 | Calculate length of the range for I offsets. */ | |
2203 | n = 4 * n; | |
7fb9f789 | 2204 | |
cf869cce NC |
2205 | /* Set end of the range. */ |
2206 | arg_.offset2[i] = start_offset + n; | |
7fb9f789 | 2207 | |
cf869cce | 2208 | start_offset = arg_.offset2[i]; |
7fb9f789 NC |
2209 | } |
2210 | ||
cf869cce NC |
2211 | if (!use_neg_got_offsets_p) |
2212 | /* Make sure that if we try to switch to negative offsets in | |
2213 | elf_m68k_finalize_got_offsets_1, the assert therein will catch | |
2214 | the bug. */ | |
2215 | for (i = R_8; i <= R_32; ++i) | |
2216 | arg_.offset2[-i - 1] = arg_.offset2[i]; | |
7fb9f789 | 2217 | |
cf869cce NC |
2218 | /* Setup got->offset. offset1[R_8] is either in the middle or at the |
2219 | beginning of GOT depending on use_neg_got_offsets_p. */ | |
2220 | got->offset = arg_.offset1[R_8]; | |
7fb9f789 | 2221 | |
cf869cce NC |
2222 | arg_.symndx2h = symndx2h; |
2223 | arg_.n_ldm_entries = 0; | |
7fb9f789 | 2224 | |
cf869cce NC |
2225 | /* Assign offsets. */ |
2226 | htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_); | |
7fb9f789 | 2227 | |
cf869cce NC |
2228 | /* Check offset ranges we have actually assigned. */ |
2229 | for (i = (int) R_8; i <= (int) R_32; ++i) | |
2230 | BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4); | |
7fb9f789 | 2231 | |
cf869cce NC |
2232 | *final_offset = start_offset; |
2233 | *n_ldm_entries = arg_.n_ldm_entries; | |
7fb9f789 NC |
2234 | } |
2235 | ||
2236 | struct elf_m68k_partition_multi_got_arg | |
2237 | { | |
2238 | /* The GOT we are adding entries to. Aka big got. */ | |
2239 | struct elf_m68k_got *current_got; | |
2240 | ||
2241 | /* Offset to assign the next CURRENT_GOT. */ | |
2242 | bfd_vma offset; | |
2243 | ||
2244 | /* Context where memory should be allocated. */ | |
2245 | struct bfd_link_info *info; | |
2246 | ||
cf869cce | 2247 | /* Total number of slots in the .got section. |
7fb9f789 | 2248 | This is used to calculate size of the .got and .rela.got sections. */ |
cf869cce | 2249 | bfd_vma n_slots; |
7fb9f789 | 2250 | |
cf869cce NC |
2251 | /* Difference in numbers of allocated slots in the .got section |
2252 | and necessary relocations in the .rela.got section. | |
7fb9f789 | 2253 | This is used to calculate size of the .rela.got section. */ |
cf869cce | 2254 | bfd_vma slots_relas_diff; |
7fb9f789 NC |
2255 | |
2256 | /* Error flag. */ | |
2257 | bfd_boolean error_p; | |
2258 | ||
2259 | /* Mapping from global symndx to global symbols. | |
2260 | This is used to build lists of got entries for global symbols. */ | |
2261 | struct elf_m68k_link_hash_entry **symndx2h; | |
2262 | }; | |
2263 | ||
cf869cce NC |
2264 | static void |
2265 | elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg) | |
2266 | { | |
2267 | bfd_vma n_ldm_entries; | |
2268 | ||
2269 | elf_m68k_finalize_got_offsets (arg->current_got, | |
2270 | (elf_m68k_hash_table (arg->info) | |
2271 | ->use_neg_got_offsets_p), | |
2272 | arg->symndx2h, | |
2273 | &arg->offset, &n_ldm_entries); | |
2274 | ||
2275 | arg->n_slots += arg->current_got->n_slots[R_32]; | |
2276 | ||
2277 | if (!arg->info->shared) | |
2278 | /* If we are generating a shared object, we need to | |
2279 | output a R_68K_RELATIVE reloc so that the dynamic | |
2280 | linker can adjust this GOT entry. Overwise we | |
2281 | don't need space in .rela.got for local symbols. */ | |
2282 | arg->slots_relas_diff += arg->current_got->local_n_slots; | |
2283 | ||
2284 | /* @LDM relocations require a 2-slot GOT entry, but only | |
2285 | one relocation. Account for that. */ | |
2286 | arg->slots_relas_diff += n_ldm_entries; | |
2287 | ||
2288 | BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots); | |
2289 | } | |
2290 | ||
2291 | ||
7fb9f789 NC |
2292 | /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT |
2293 | or start a new CURRENT_GOT. */ | |
2294 | ||
2295 | static int | |
2296 | elf_m68k_partition_multi_got_1 (void **_entry, void *_arg) | |
2297 | { | |
2298 | struct elf_m68k_bfd2got_entry *entry; | |
2299 | struct elf_m68k_partition_multi_got_arg *arg; | |
2300 | struct elf_m68k_got *got; | |
7fb9f789 NC |
2301 | struct elf_m68k_got diff_; |
2302 | struct elf_m68k_got *diff; | |
2303 | ||
2304 | entry = (struct elf_m68k_bfd2got_entry *) *_entry; | |
2305 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2306 | ||
2307 | got = entry->got; | |
2308 | BFD_ASSERT (got != NULL); | |
2309 | BFD_ASSERT (got->offset == (bfd_vma) -1); | |
2310 | ||
2311 | diff = NULL; | |
2312 | ||
2313 | if (arg->current_got != NULL) | |
2314 | /* Construct diff. */ | |
2315 | { | |
2316 | diff = &diff_; | |
cf869cce | 2317 | elf_m68k_init_got (diff); |
7fb9f789 NC |
2318 | |
2319 | if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff)) | |
2320 | { | |
2321 | if (diff->offset == 0) | |
2322 | /* Offset set to 0 in the diff_ indicates an error. */ | |
2323 | { | |
2324 | arg->error_p = TRUE; | |
2325 | goto final_return; | |
2326 | } | |
2327 | ||
2328 | if (elf_m68k_hash_table (arg->info)->allow_multigot_p) | |
2329 | { | |
2330 | elf_m68k_clear_got (diff); | |
cf869cce | 2331 | /* Schedule to finish up current_got and start new one. */ |
7fb9f789 NC |
2332 | diff = NULL; |
2333 | } | |
2334 | /* else | |
2335 | Merge GOTs no matter what. If big GOT overflows, | |
2336 | we'll fail in relocate_section due to truncated relocations. | |
2337 | ||
2338 | ??? May be fail earlier? E.g., in can_merge_gots. */ | |
2339 | } | |
2340 | } | |
2341 | else | |
2342 | /* Diff of got against empty current_got is got itself. */ | |
2343 | { | |
cf869cce | 2344 | /* Create empty current_got to put subsequent GOTs to. */ |
7fb9f789 NC |
2345 | arg->current_got = elf_m68k_create_empty_got (arg->info); |
2346 | if (arg->current_got == NULL) | |
2347 | { | |
2348 | arg->error_p = TRUE; | |
2349 | goto final_return; | |
2350 | } | |
2351 | ||
2352 | arg->current_got->offset = arg->offset; | |
2353 | ||
2354 | diff = got; | |
2355 | } | |
2356 | ||
7fb9f789 NC |
2357 | if (diff != NULL) |
2358 | { | |
cf869cce | 2359 | if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info)) |
7fb9f789 NC |
2360 | { |
2361 | arg->error_p = TRUE; | |
2362 | goto final_return; | |
2363 | } | |
2364 | ||
2365 | /* Now we can free GOT. */ | |
2366 | elf_m68k_clear_got (got); | |
2367 | ||
cf869cce | 2368 | entry->got = arg->current_got; |
7fb9f789 NC |
2369 | } |
2370 | else | |
2371 | { | |
7fb9f789 | 2372 | /* Finish up current_got. */ |
cf869cce | 2373 | elf_m68k_partition_multi_got_2 (arg); |
7fb9f789 | 2374 | |
cf869cce NC |
2375 | /* Schedule to start a new current_got. */ |
2376 | arg->current_got = NULL; | |
7fb9f789 NC |
2377 | |
2378 | /* Retry. */ | |
2379 | if (!elf_m68k_partition_multi_got_1 (_entry, _arg)) | |
2380 | { | |
2381 | BFD_ASSERT (arg->error_p); | |
2382 | goto final_return; | |
2383 | } | |
2384 | } | |
2385 | ||
2386 | final_return: | |
2387 | if (diff != NULL) | |
2388 | elf_m68k_clear_got (diff); | |
2389 | ||
2390 | return arg->error_p == FALSE ? 1 : 0; | |
2391 | } | |
2392 | ||
2393 | /* Helper function to build symndx2h mapping. */ | |
2394 | ||
2395 | static bfd_boolean | |
2396 | elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h, | |
2397 | void *_arg) | |
2398 | { | |
2399 | struct elf_m68k_link_hash_entry *h; | |
2400 | ||
2401 | h = elf_m68k_hash_entry (_h); | |
2402 | ||
2403 | if (h->got_entry_key != 0) | |
2404 | /* H has at least one entry in the GOT. */ | |
2405 | { | |
2406 | struct elf_m68k_partition_multi_got_arg *arg; | |
2407 | ||
2408 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2409 | ||
2410 | BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL); | |
2411 | arg->symndx2h[h->got_entry_key] = h; | |
2412 | } | |
2413 | ||
2414 | return TRUE; | |
2415 | } | |
2416 | ||
2417 | /* Merge GOTs of some BFDs, assign offsets to GOT entries and build | |
2418 | lists of GOT entries for global symbols. | |
2419 | Calculate sizes of .got and .rela.got sections. */ | |
2420 | ||
2421 | static bfd_boolean | |
2422 | elf_m68k_partition_multi_got (struct bfd_link_info *info) | |
2423 | { | |
2424 | struct elf_m68k_multi_got *multi_got; | |
2425 | struct elf_m68k_partition_multi_got_arg arg_; | |
2426 | ||
2427 | multi_got = elf_m68k_multi_got (info); | |
2428 | ||
2429 | arg_.current_got = NULL; | |
2430 | arg_.offset = 0; | |
2431 | arg_.info = info; | |
cf869cce NC |
2432 | arg_.n_slots = 0; |
2433 | arg_.slots_relas_diff = 0; | |
7fb9f789 NC |
2434 | arg_.error_p = FALSE; |
2435 | ||
2436 | if (multi_got->bfd2got != NULL) | |
2437 | { | |
2438 | /* Initialize symndx2h mapping. */ | |
2439 | { | |
2440 | arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx | |
2441 | * sizeof (*arg_.symndx2h)); | |
2442 | if (arg_.symndx2h == NULL) | |
2443 | return FALSE; | |
2444 | ||
2445 | elf_link_hash_traverse (elf_hash_table (info), | |
2446 | elf_m68k_init_symndx2h_1, &arg_); | |
2447 | } | |
2448 | ||
2449 | /* Partition. */ | |
2450 | htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1, | |
2451 | &arg_); | |
2452 | if (arg_.error_p) | |
2453 | { | |
2454 | free (arg_.symndx2h); | |
2455 | arg_.symndx2h = NULL; | |
2456 | ||
2457 | return FALSE; | |
2458 | } | |
2459 | ||
2460 | /* Finish up last current_got. */ | |
cf869cce | 2461 | elf_m68k_partition_multi_got_2 (&arg_); |
7fb9f789 NC |
2462 | |
2463 | free (arg_.symndx2h); | |
266abb8f | 2464 | } |
7fb9f789 NC |
2465 | |
2466 | if (elf_hash_table (info)->dynobj != NULL) | |
2467 | /* Set sizes of .got and .rela.got sections. */ | |
266abb8f | 2468 | { |
7fb9f789 | 2469 | asection *s; |
425c6cb0 | 2470 | |
3d4d4302 | 2471 | s = bfd_get_linker_section (elf_hash_table (info)->dynobj, ".got"); |
7fb9f789 | 2472 | if (s != NULL) |
cf869cce | 2473 | s->size = arg_.offset; |
425c6cb0 | 2474 | else |
cf869cce | 2475 | BFD_ASSERT (arg_.offset == 0); |
425c6cb0 | 2476 | |
cf869cce NC |
2477 | BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots); |
2478 | arg_.n_slots -= arg_.slots_relas_diff; | |
7fb9f789 | 2479 | |
3d4d4302 | 2480 | s = bfd_get_linker_section (elf_hash_table (info)->dynobj, ".rela.got"); |
7fb9f789 | 2481 | if (s != NULL) |
cf869cce | 2482 | s->size = arg_.n_slots * sizeof (Elf32_External_Rela); |
3bdcfdf4 | 2483 | else |
cf869cce | 2484 | BFD_ASSERT (arg_.n_slots == 0); |
9e1281c7 | 2485 | } |
7fb9f789 NC |
2486 | else |
2487 | BFD_ASSERT (multi_got->bfd2got == NULL); | |
9e1281c7 | 2488 | |
b34976b6 | 2489 | return TRUE; |
9e1281c7 CM |
2490 | } |
2491 | ||
7fb9f789 NC |
2492 | /* Specialized version of elf_m68k_get_got_entry that returns pointer |
2493 | to hashtable slot, thus allowing removal of entry via | |
2494 | elf_m68k_remove_got_entry. */ | |
2495 | ||
2496 | static struct elf_m68k_got_entry ** | |
2497 | elf_m68k_find_got_entry_ptr (struct elf_m68k_got *got, | |
2498 | struct elf_m68k_got_entry_key *key) | |
9e1281c7 | 2499 | { |
7fb9f789 NC |
2500 | void **ptr; |
2501 | struct elf_m68k_got_entry entry_; | |
2502 | struct elf_m68k_got_entry **entry_ptr; | |
9e1281c7 | 2503 | |
7fb9f789 NC |
2504 | entry_.key_ = *key; |
2505 | ptr = htab_find_slot (got->entries, &entry_, NO_INSERT); | |
2506 | BFD_ASSERT (ptr != NULL); | |
9e1281c7 | 2507 | |
7fb9f789 | 2508 | entry_ptr = (struct elf_m68k_got_entry **) ptr; |
9e1281c7 | 2509 | |
7fb9f789 NC |
2510 | return entry_ptr; |
2511 | } | |
9e1281c7 | 2512 | |
7fb9f789 | 2513 | /* Remove entry pointed to by ENTRY_PTR from GOT. */ |
9e1281c7 | 2514 | |
7fb9f789 NC |
2515 | static void |
2516 | elf_m68k_remove_got_entry (struct elf_m68k_got *got, | |
2517 | struct elf_m68k_got_entry **entry_ptr) | |
2518 | { | |
2519 | struct elf_m68k_got_entry *entry; | |
2520 | ||
2521 | entry = *entry_ptr; | |
2522 | ||
2523 | /* Check that offsets have not been finalized yet. */ | |
2524 | BFD_ASSERT (got->offset == (bfd_vma) -1); | |
2525 | /* Check that this entry is indeed unused. */ | |
2526 | BFD_ASSERT (entry->u.s1.refcount == 0); | |
2527 | ||
cf869cce | 2528 | elf_m68k_remove_got_entry_type (got, entry->key_.type); |
7fb9f789 NC |
2529 | |
2530 | if (entry->key_.bfd != NULL) | |
cf869cce NC |
2531 | got->local_n_slots -= elf_m68k_reloc_got_n_slots (entry->key_.type); |
2532 | ||
2533 | BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots); | |
7fb9f789 NC |
2534 | |
2535 | htab_clear_slot (got->entries, (void **) entry_ptr); | |
2536 | } | |
2537 | ||
2538 | /* Copy any information related to dynamic linking from a pre-existing | |
2539 | symbol to a newly created symbol. Also called to copy flags and | |
2540 | other back-end info to a weakdef, in which case the symbol is not | |
2541 | newly created and plt/got refcounts and dynamic indices should not | |
2542 | be copied. */ | |
2543 | ||
2544 | static void | |
2545 | elf_m68k_copy_indirect_symbol (struct bfd_link_info *info, | |
2546 | struct elf_link_hash_entry *_dir, | |
2547 | struct elf_link_hash_entry *_ind) | |
2548 | { | |
2549 | struct elf_m68k_link_hash_entry *dir; | |
2550 | struct elf_m68k_link_hash_entry *ind; | |
2551 | ||
2552 | _bfd_elf_link_hash_copy_indirect (info, _dir, _ind); | |
2553 | ||
2554 | if (_ind->root.type != bfd_link_hash_indirect) | |
2555 | return; | |
2556 | ||
2557 | dir = elf_m68k_hash_entry (_dir); | |
2558 | ind = elf_m68k_hash_entry (_ind); | |
2559 | ||
e5f2b1de NC |
2560 | /* Any absolute non-dynamic relocations against an indirect or weak |
2561 | definition will be against the target symbol. */ | |
2562 | _dir->non_got_ref |= _ind->non_got_ref; | |
2563 | ||
7fb9f789 NC |
2564 | /* We might have a direct symbol already having entries in the GOTs. |
2565 | Update its key only in case indirect symbol has GOT entries and | |
2566 | assert that both indirect and direct symbols don't have GOT entries | |
2567 | at the same time. */ | |
2568 | if (ind->got_entry_key != 0) | |
266abb8f | 2569 | { |
7fb9f789 NC |
2570 | BFD_ASSERT (dir->got_entry_key == 0); |
2571 | /* Assert that GOTs aren't partioned yet. */ | |
2572 | BFD_ASSERT (ind->glist == NULL); | |
425c6cb0 | 2573 | |
7fb9f789 NC |
2574 | dir->got_entry_key = ind->got_entry_key; |
2575 | ind->got_entry_key = 0; | |
266abb8f | 2576 | } |
9e1281c7 | 2577 | } |
7fb9f789 | 2578 | |
252b5132 RH |
2579 | /* Look through the relocs for a section during the first phase, and |
2580 | allocate space in the global offset table or procedure linkage | |
2581 | table. */ | |
2582 | ||
b34976b6 | 2583 | static bfd_boolean |
252b5132 RH |
2584 | elf_m68k_check_relocs (abfd, info, sec, relocs) |
2585 | bfd *abfd; | |
2586 | struct bfd_link_info *info; | |
2587 | asection *sec; | |
2588 | const Elf_Internal_Rela *relocs; | |
2589 | { | |
2590 | bfd *dynobj; | |
2591 | Elf_Internal_Shdr *symtab_hdr; | |
2592 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
2593 | const Elf_Internal_Rela *rel; |
2594 | const Elf_Internal_Rela *rel_end; | |
2595 | asection *sgot; | |
2596 | asection *srelgot; | |
2597 | asection *sreloc; | |
7fb9f789 | 2598 | struct elf_m68k_got *got; |
252b5132 | 2599 | |
1049f94e | 2600 | if (info->relocatable) |
b34976b6 | 2601 | return TRUE; |
252b5132 RH |
2602 | |
2603 | dynobj = elf_hash_table (info)->dynobj; | |
2604 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2605 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 RH |
2606 | |
2607 | sgot = NULL; | |
2608 | srelgot = NULL; | |
2609 | sreloc = NULL; | |
2610 | ||
7fb9f789 NC |
2611 | got = NULL; |
2612 | ||
252b5132 RH |
2613 | rel_end = relocs + sec->reloc_count; |
2614 | for (rel = relocs; rel < rel_end; rel++) | |
2615 | { | |
2616 | unsigned long r_symndx; | |
2617 | struct elf_link_hash_entry *h; | |
2618 | ||
2619 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2620 | ||
2621 | if (r_symndx < symtab_hdr->sh_info) | |
2622 | h = NULL; | |
2623 | else | |
973a3492 L |
2624 | { |
2625 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2626 | while (h->root.type == bfd_link_hash_indirect | |
2627 | || h->root.type == bfd_link_hash_warning) | |
2628 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2629 | } | |
252b5132 RH |
2630 | |
2631 | switch (ELF32_R_TYPE (rel->r_info)) | |
2632 | { | |
2633 | case R_68K_GOT8: | |
2634 | case R_68K_GOT16: | |
2635 | case R_68K_GOT32: | |
2636 | if (h != NULL | |
2637 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2638 | break; | |
2639 | /* Fall through. */ | |
cf869cce NC |
2640 | |
2641 | /* Relative GOT relocations. */ | |
252b5132 RH |
2642 | case R_68K_GOT8O: |
2643 | case R_68K_GOT16O: | |
2644 | case R_68K_GOT32O: | |
cf869cce NC |
2645 | /* Fall through. */ |
2646 | ||
2647 | /* TLS relocations. */ | |
2648 | case R_68K_TLS_GD8: | |
2649 | case R_68K_TLS_GD16: | |
2650 | case R_68K_TLS_GD32: | |
2651 | case R_68K_TLS_LDM8: | |
2652 | case R_68K_TLS_LDM16: | |
2653 | case R_68K_TLS_LDM32: | |
2654 | case R_68K_TLS_IE8: | |
2655 | case R_68K_TLS_IE16: | |
2656 | case R_68K_TLS_IE32: | |
2657 | ||
e5f2b1de NC |
2658 | case R_68K_TLS_TPREL32: |
2659 | case R_68K_TLS_DTPREL32: | |
2660 | ||
2661 | if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32 | |
2662 | && info->shared) | |
2663 | /* Do the special chorus for libraries with static TLS. */ | |
2664 | info->flags |= DF_STATIC_TLS; | |
2665 | ||
252b5132 RH |
2666 | /* This symbol requires a global offset table entry. */ |
2667 | ||
2668 | if (dynobj == NULL) | |
2669 | { | |
2670 | /* Create the .got section. */ | |
2671 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
2672 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 2673 | return FALSE; |
252b5132 RH |
2674 | } |
2675 | ||
2676 | if (sgot == NULL) | |
2677 | { | |
3d4d4302 | 2678 | sgot = bfd_get_linker_section (dynobj, ".got"); |
252b5132 RH |
2679 | BFD_ASSERT (sgot != NULL); |
2680 | } | |
2681 | ||
2682 | if (srelgot == NULL | |
2683 | && (h != NULL || info->shared)) | |
2684 | { | |
3d4d4302 | 2685 | srelgot = bfd_get_linker_section (dynobj, ".rela.got"); |
252b5132 RH |
2686 | if (srelgot == NULL) |
2687 | { | |
3d4d4302 AM |
2688 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
2689 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
2690 | | SEC_READONLY); | |
2691 | srelgot = bfd_make_section_anyway_with_flags (dynobj, | |
2692 | ".rela.got", | |
2693 | flags); | |
252b5132 | 2694 | if (srelgot == NULL |
252b5132 | 2695 | || !bfd_set_section_alignment (dynobj, srelgot, 2)) |
b34976b6 | 2696 | return FALSE; |
252b5132 RH |
2697 | } |
2698 | } | |
2699 | ||
7fb9f789 | 2700 | if (got == NULL) |
252b5132 | 2701 | { |
7fb9f789 | 2702 | struct elf_m68k_bfd2got_entry *bfd2got_entry; |
252b5132 | 2703 | |
7fb9f789 NC |
2704 | bfd2got_entry |
2705 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
2706 | abfd, FIND_OR_CREATE, info); | |
2707 | if (bfd2got_entry == NULL) | |
2708 | return FALSE; | |
252b5132 | 2709 | |
7fb9f789 NC |
2710 | got = bfd2got_entry->got; |
2711 | BFD_ASSERT (got != NULL); | |
252b5132 | 2712 | } |
7fb9f789 NC |
2713 | |
2714 | { | |
2715 | struct elf_m68k_got_entry *got_entry; | |
2716 | ||
2717 | /* Add entry to got. */ | |
2718 | got_entry = elf_m68k_add_entry_to_got (got, h, abfd, | |
2719 | ELF32_R_TYPE (rel->r_info), | |
2720 | r_symndx, info); | |
2721 | if (got_entry == NULL) | |
2722 | return FALSE; | |
2723 | ||
2724 | if (got_entry->u.s1.refcount == 1) | |
2725 | { | |
2726 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2727 | if (h != NULL | |
2728 | && h->dynindx == -1 | |
2729 | && !h->forced_local) | |
2730 | { | |
2731 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
2732 | return FALSE; | |
2733 | } | |
7fb9f789 NC |
2734 | } |
2735 | } | |
2736 | ||
252b5132 RH |
2737 | break; |
2738 | ||
2739 | case R_68K_PLT8: | |
2740 | case R_68K_PLT16: | |
2741 | case R_68K_PLT32: | |
2742 | /* This symbol requires a procedure linkage table entry. We | |
2743 | actually build the entry in adjust_dynamic_symbol, | |
2744 | because this might be a case of linking PIC code which is | |
2745 | never referenced by a dynamic object, in which case we | |
2746 | don't need to generate a procedure linkage table entry | |
2747 | after all. */ | |
2748 | ||
2749 | /* If this is a local symbol, we resolve it directly without | |
2750 | creating a procedure linkage table entry. */ | |
2751 | if (h == NULL) | |
2752 | continue; | |
2753 | ||
f5385ebf | 2754 | h->needs_plt = 1; |
51b64d56 | 2755 | h->plt.refcount++; |
252b5132 RH |
2756 | break; |
2757 | ||
2758 | case R_68K_PLT8O: | |
2759 | case R_68K_PLT16O: | |
2760 | case R_68K_PLT32O: | |
2761 | /* This symbol requires a procedure linkage table entry. */ | |
2762 | ||
2763 | if (h == NULL) | |
2764 | { | |
2765 | /* It does not make sense to have this relocation for a | |
2766 | local symbol. FIXME: does it? How to handle it if | |
2767 | it does make sense? */ | |
2768 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2769 | return FALSE; |
252b5132 RH |
2770 | } |
2771 | ||
2772 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 2773 | if (h->dynindx == -1 |
f5385ebf | 2774 | && !h->forced_local) |
252b5132 | 2775 | { |
c152c796 | 2776 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2777 | return FALSE; |
252b5132 RH |
2778 | } |
2779 | ||
f5385ebf | 2780 | h->needs_plt = 1; |
51b64d56 | 2781 | h->plt.refcount++; |
252b5132 RH |
2782 | break; |
2783 | ||
2784 | case R_68K_PC8: | |
2785 | case R_68K_PC16: | |
2786 | case R_68K_PC32: | |
2787 | /* If we are creating a shared library and this is not a local | |
2788 | symbol, we need to copy the reloc into the shared library. | |
2789 | However when linking with -Bsymbolic and this is a global | |
2790 | symbol which is defined in an object we are including in the | |
2791 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
2792 | reloc directly. At this point we have not seen all the input | |
2793 | files, so it is possible that DEF_REGULAR is not set now but | |
2794 | will be set later (it is never cleared). We account for that | |
2795 | possibility below by storing information in the | |
2796 | pcrel_relocs_copied field of the hash table entry. */ | |
2797 | if (!(info->shared | |
2798 | && (sec->flags & SEC_ALLOC) != 0 | |
2799 | && h != NULL | |
2800 | && (!info->symbolic | |
b6152c34 | 2801 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 2802 | || !h->def_regular))) |
252b5132 RH |
2803 | { |
2804 | if (h != NULL) | |
2805 | { | |
2806 | /* Make sure a plt entry is created for this symbol if | |
2807 | it turns out to be a function defined by a dynamic | |
2808 | object. */ | |
51b64d56 | 2809 | h->plt.refcount++; |
252b5132 RH |
2810 | } |
2811 | break; | |
2812 | } | |
2813 | /* Fall through. */ | |
2814 | case R_68K_8: | |
2815 | case R_68K_16: | |
2816 | case R_68K_32: | |
810e6986 NC |
2817 | /* We don't need to handle relocs into sections not going into |
2818 | the "real" output. */ | |
2819 | if ((sec->flags & SEC_ALLOC) == 0) | |
2820 | break; | |
2821 | ||
252b5132 RH |
2822 | if (h != NULL) |
2823 | { | |
2824 | /* Make sure a plt entry is created for this symbol if it | |
2825 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 2826 | h->plt.refcount++; |
e5f2b1de | 2827 | |
cab0ad83 | 2828 | if (info->executable) |
e5f2b1de NC |
2829 | /* This symbol needs a non-GOT reference. */ |
2830 | h->non_got_ref = 1; | |
252b5132 RH |
2831 | } |
2832 | ||
2833 | /* If we are creating a shared library, we need to copy the | |
2834 | reloc into the shared library. */ | |
810e6986 | 2835 | if (info->shared) |
252b5132 RH |
2836 | { |
2837 | /* When creating a shared object, we must copy these | |
2838 | reloc types into the output file. We create a reloc | |
2839 | section in dynobj and make room for this reloc. */ | |
2840 | if (sreloc == NULL) | |
2841 | { | |
83bac4b0 NC |
2842 | sreloc = _bfd_elf_make_dynamic_reloc_section |
2843 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
252b5132 | 2844 | |
252b5132 | 2845 | if (sreloc == NULL) |
83bac4b0 | 2846 | return FALSE; |
252b5132 RH |
2847 | } |
2848 | ||
3e829b4a AS |
2849 | if (sec->flags & SEC_READONLY |
2850 | /* Don't set DF_TEXTREL yet for PC relative | |
2851 | relocations, they might be discarded later. */ | |
2852 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
2853 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2854 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
2855 | info->flags |= DF_TEXTREL; | |
2856 | ||
eea6121a | 2857 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 2858 | |
b6152c34 AS |
2859 | /* We count the number of PC relative relocations we have |
2860 | entered for this symbol, so that we can discard them | |
2861 | again if, in the -Bsymbolic case, the symbol is later | |
2862 | defined by a regular object, or, in the normal shared | |
2863 | case, the symbol is forced to be local. Note that this | |
2864 | function is only called if we are using an m68kelf linker | |
2865 | hash table, which means that h is really a pointer to an | |
252b5132 | 2866 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
2867 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
2868 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2869 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 2870 | { |
252b5132 | 2871 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
2872 | struct elf_m68k_pcrel_relocs_copied **head; |
2873 | ||
2874 | if (h != NULL) | |
2875 | { | |
2876 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 2877 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
2878 | head = &eh->pcrel_relocs_copied; |
2879 | } | |
2880 | else | |
2881 | { | |
2882 | asection *s; | |
6edfbbad | 2883 | void *vpp; |
87d72d41 | 2884 | Elf_Internal_Sym *isym; |
6edfbbad | 2885 | |
87d72d41 AM |
2886 | isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache, |
2887 | abfd, r_symndx); | |
2888 | if (isym == NULL) | |
b6152c34 | 2889 | return FALSE; |
252b5132 | 2890 | |
87d72d41 AM |
2891 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2892 | if (s == NULL) | |
2893 | s = sec; | |
2894 | ||
6edfbbad DJ |
2895 | vpp = &elf_section_data (s)->local_dynrel; |
2896 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 2897 | } |
252b5132 | 2898 | |
b6152c34 | 2899 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
2900 | if (p->section == sreloc) |
2901 | break; | |
2902 | ||
2903 | if (p == NULL) | |
2904 | { | |
2905 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 2906 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 2907 | if (p == NULL) |
b34976b6 | 2908 | return FALSE; |
b6152c34 AS |
2909 | p->next = *head; |
2910 | *head = p; | |
252b5132 RH |
2911 | p->section = sreloc; |
2912 | p->count = 0; | |
2913 | } | |
2914 | ||
2915 | ++p->count; | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | break; | |
2920 | ||
2921 | /* This relocation describes the C++ object vtable hierarchy. | |
2922 | Reconstruct it for later use during GC. */ | |
2923 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 2924 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 2925 | return FALSE; |
252b5132 RH |
2926 | break; |
2927 | ||
2928 | /* This relocation describes which C++ vtable entries are actually | |
2929 | used. Record for later use during GC. */ | |
2930 | case R_68K_GNU_VTENTRY: | |
d17e0c6e JB |
2931 | BFD_ASSERT (h != NULL); |
2932 | if (h != NULL | |
2933 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 2934 | return FALSE; |
252b5132 RH |
2935 | break; |
2936 | ||
2937 | default: | |
2938 | break; | |
2939 | } | |
2940 | } | |
2941 | ||
b34976b6 | 2942 | return TRUE; |
252b5132 RH |
2943 | } |
2944 | ||
2945 | /* Return the section that should be marked against GC for a given | |
2946 | relocation. */ | |
2947 | ||
2948 | static asection * | |
07adf181 AM |
2949 | elf_m68k_gc_mark_hook (asection *sec, |
2950 | struct bfd_link_info *info, | |
2951 | Elf_Internal_Rela *rel, | |
2952 | struct elf_link_hash_entry *h, | |
2953 | Elf_Internal_Sym *sym) | |
252b5132 RH |
2954 | { |
2955 | if (h != NULL) | |
07adf181 AM |
2956 | switch (ELF32_R_TYPE (rel->r_info)) |
2957 | { | |
2958 | case R_68K_GNU_VTINHERIT: | |
2959 | case R_68K_GNU_VTENTRY: | |
2960 | return NULL; | |
2961 | } | |
2962 | ||
2963 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
2964 | } |
2965 | ||
2966 | /* Update the got entry reference counts for the section being removed. */ | |
2967 | ||
b34976b6 | 2968 | static bfd_boolean |
07adf181 AM |
2969 | elf_m68k_gc_sweep_hook (bfd *abfd, |
2970 | struct bfd_link_info *info, | |
2971 | asection *sec, | |
2972 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
2973 | { |
2974 | Elf_Internal_Shdr *symtab_hdr; | |
2975 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 | 2976 | const Elf_Internal_Rela *rel, *relend; |
252b5132 | 2977 | bfd *dynobj; |
7fb9f789 | 2978 | struct elf_m68k_got *got; |
252b5132 | 2979 | |
7dda2462 TG |
2980 | if (info->relocatable) |
2981 | return TRUE; | |
2982 | ||
252b5132 | 2983 | dynobj = elf_hash_table (info)->dynobj; |
dd5724d5 | 2984 | if (dynobj == NULL) |
b34976b6 | 2985 | return TRUE; |
dd5724d5 | 2986 | |
4f075348 KH |
2987 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
2988 | sym_hashes = elf_sym_hashes (abfd); | |
7fb9f789 | 2989 | got = NULL; |
252b5132 RH |
2990 | |
2991 | relend = relocs + sec->reloc_count; | |
2992 | for (rel = relocs; rel < relend; rel++) | |
2993 | { | |
4f075348 | 2994 | unsigned long r_symndx; |
3eb128b2 AM |
2995 | struct elf_link_hash_entry *h = NULL; |
2996 | ||
2997 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2998 | if (r_symndx >= symtab_hdr->sh_info) | |
2999 | { | |
3000 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3001 | while (h->root.type == bfd_link_hash_indirect | |
3002 | || h->root.type == bfd_link_hash_warning) | |
3003 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3004 | } | |
4f075348 | 3005 | |
252b5132 RH |
3006 | switch (ELF32_R_TYPE (rel->r_info)) |
3007 | { | |
3008 | case R_68K_GOT8: | |
3009 | case R_68K_GOT16: | |
3010 | case R_68K_GOT32: | |
7fb9f789 NC |
3011 | if (h != NULL |
3012 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3013 | break; | |
3014 | ||
3015 | /* FALLTHRU */ | |
252b5132 RH |
3016 | case R_68K_GOT8O: |
3017 | case R_68K_GOT16O: | |
3018 | case R_68K_GOT32O: | |
cf869cce NC |
3019 | /* Fall through. */ |
3020 | ||
3021 | /* TLS relocations. */ | |
3022 | case R_68K_TLS_GD8: | |
3023 | case R_68K_TLS_GD16: | |
3024 | case R_68K_TLS_GD32: | |
3025 | case R_68K_TLS_LDM8: | |
3026 | case R_68K_TLS_LDM16: | |
3027 | case R_68K_TLS_LDM32: | |
3028 | case R_68K_TLS_IE8: | |
3029 | case R_68K_TLS_IE16: | |
3030 | case R_68K_TLS_IE32: | |
3031 | ||
e5f2b1de NC |
3032 | case R_68K_TLS_TPREL32: |
3033 | case R_68K_TLS_DTPREL32: | |
3034 | ||
7fb9f789 | 3035 | if (got == NULL) |
252b5132 | 3036 | { |
7fb9f789 NC |
3037 | got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), |
3038 | abfd, MUST_FIND, NULL)->got; | |
3039 | BFD_ASSERT (got != NULL); | |
252b5132 | 3040 | } |
7fb9f789 NC |
3041 | |
3042 | { | |
3043 | struct elf_m68k_got_entry_key key_; | |
3044 | struct elf_m68k_got_entry **got_entry_ptr; | |
3045 | struct elf_m68k_got_entry *got_entry; | |
3046 | ||
cf869cce NC |
3047 | elf_m68k_init_got_entry_key (&key_, h, abfd, r_symndx, |
3048 | ELF32_R_TYPE (rel->r_info)); | |
7fb9f789 NC |
3049 | got_entry_ptr = elf_m68k_find_got_entry_ptr (got, &key_); |
3050 | ||
3051 | got_entry = *got_entry_ptr; | |
3052 | ||
3053 | if (got_entry->u.s1.refcount > 0) | |
3054 | { | |
3055 | --got_entry->u.s1.refcount; | |
3056 | ||
3057 | if (got_entry->u.s1.refcount == 0) | |
3058 | /* We don't need the .got entry any more. */ | |
3059 | elf_m68k_remove_got_entry (got, got_entry_ptr); | |
3060 | } | |
3061 | } | |
252b5132 RH |
3062 | break; |
3063 | ||
3064 | case R_68K_PLT8: | |
3065 | case R_68K_PLT16: | |
3066 | case R_68K_PLT32: | |
3067 | case R_68K_PLT8O: | |
3068 | case R_68K_PLT16O: | |
3069 | case R_68K_PLT32O: | |
3070 | case R_68K_PC8: | |
3071 | case R_68K_PC16: | |
3072 | case R_68K_PC32: | |
3073 | case R_68K_8: | |
3074 | case R_68K_16: | |
3075 | case R_68K_32: | |
3eb128b2 | 3076 | if (h != NULL) |
252b5132 | 3077 | { |
252b5132 RH |
3078 | if (h->plt.refcount > 0) |
3079 | --h->plt.refcount; | |
3080 | } | |
3081 | break; | |
3082 | ||
3083 | default: | |
3084 | break; | |
3085 | } | |
3086 | } | |
3087 | ||
b34976b6 | 3088 | return TRUE; |
252b5132 | 3089 | } |
cc3e26be RS |
3090 | \f |
3091 | /* Return the type of PLT associated with OUTPUT_BFD. */ | |
3092 | ||
3093 | static const struct elf_m68k_plt_info * | |
3094 | elf_m68k_get_plt_info (bfd *output_bfd) | |
3095 | { | |
3096 | unsigned int features; | |
3097 | ||
3098 | features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd)); | |
3099 | if (features & cpu32) | |
3100 | return &elf_cpu32_plt_info; | |
3101 | if (features & mcfisa_b) | |
3102 | return &elf_isab_plt_info; | |
9a2e615a NS |
3103 | if (features & mcfisa_c) |
3104 | return &elf_isac_plt_info; | |
cc3e26be RS |
3105 | return &elf_m68k_plt_info; |
3106 | } | |
3107 | ||
3108 | /* This function is called after all the input files have been read, | |
3109 | and the input sections have been assigned to output sections. | |
3110 | It's a convenient place to determine the PLT style. */ | |
3111 | ||
3112 | static bfd_boolean | |
3113 | elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) | |
3114 | { | |
7fb9f789 NC |
3115 | /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got |
3116 | sections. */ | |
3117 | if (!elf_m68k_partition_multi_got (info)) | |
3118 | return FALSE; | |
3119 | ||
cc3e26be RS |
3120 | elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd); |
3121 | return TRUE; | |
3122 | } | |
252b5132 | 3123 | |
252b5132 RH |
3124 | /* Adjust a symbol defined by a dynamic object and referenced by a |
3125 | regular object. The current definition is in some section of the | |
3126 | dynamic object, but we're not including those sections. We have to | |
3127 | change the definition to something the rest of the link can | |
3128 | understand. */ | |
3129 | ||
b34976b6 | 3130 | static bfd_boolean |
252b5132 RH |
3131 | elf_m68k_adjust_dynamic_symbol (info, h) |
3132 | struct bfd_link_info *info; | |
3133 | struct elf_link_hash_entry *h; | |
3134 | { | |
cc3e26be | 3135 | struct elf_m68k_link_hash_table *htab; |
252b5132 RH |
3136 | bfd *dynobj; |
3137 | asection *s; | |
252b5132 | 3138 | |
cc3e26be | 3139 | htab = elf_m68k_hash_table (info); |
252b5132 RH |
3140 | dynobj = elf_hash_table (info)->dynobj; |
3141 | ||
3142 | /* Make sure we know what is going on here. */ | |
3143 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 3144 | && (h->needs_plt |
f6e332e6 | 3145 | || h->u.weakdef != NULL |
f5385ebf AM |
3146 | || (h->def_dynamic |
3147 | && h->ref_regular | |
3148 | && !h->def_regular))); | |
252b5132 RH |
3149 | |
3150 | /* If this is a function, put it in the procedure linkage table. We | |
3151 | will fill in the contents of the procedure linkage table later, | |
3152 | when we know the address of the .got section. */ | |
3153 | if (h->type == STT_FUNC | |
f5385ebf | 3154 | || h->needs_plt) |
252b5132 | 3155 | { |
9dfe8738 AS |
3156 | if ((h->plt.refcount <= 0 |
3157 | || SYMBOL_CALLS_LOCAL (info, h) | |
3158 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
3159 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3160 | /* We must always create the plt entry if it was referenced |
3161 | by a PLTxxO relocation. In this case we already recorded | |
3162 | it as a dynamic symbol. */ | |
3163 | && h->dynindx == -1) | |
3164 | { | |
3165 | /* This case can occur if we saw a PLTxx reloc in an input | |
3166 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
3167 | object, or if all references were garbage collected. In |
3168 | such a case, we don't actually need to build a procedure | |
3169 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 3170 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 3171 | h->needs_plt = 0; |
b34976b6 | 3172 | return TRUE; |
252b5132 RH |
3173 | } |
3174 | ||
3175 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 3176 | if (h->dynindx == -1 |
f5385ebf | 3177 | && !h->forced_local) |
252b5132 | 3178 | { |
c152c796 | 3179 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3180 | return FALSE; |
252b5132 RH |
3181 | } |
3182 | ||
3d4d4302 | 3183 | s = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
3184 | BFD_ASSERT (s != NULL); |
3185 | ||
3186 | /* If this is the first .plt entry, make room for the special | |
3187 | first entry. */ | |
eea6121a | 3188 | if (s->size == 0) |
cc3e26be | 3189 | s->size = htab->plt_info->size; |
252b5132 RH |
3190 | |
3191 | /* If this symbol is not defined in a regular file, and we are | |
3192 | not generating a shared library, then set the symbol to this | |
3193 | location in the .plt. This is required to make function | |
3194 | pointers compare as equal between the normal executable and | |
3195 | the shared library. */ | |
3196 | if (!info->shared | |
f5385ebf | 3197 | && !h->def_regular) |
252b5132 RH |
3198 | { |
3199 | h->root.u.def.section = s; | |
eea6121a | 3200 | h->root.u.def.value = s->size; |
252b5132 RH |
3201 | } |
3202 | ||
eea6121a | 3203 | h->plt.offset = s->size; |
252b5132 RH |
3204 | |
3205 | /* Make room for this entry. */ | |
cc3e26be | 3206 | s->size += htab->plt_info->size; |
252b5132 RH |
3207 | |
3208 | /* We also need to make an entry in the .got.plt section, which | |
3209 | will be placed in the .got section by the linker script. */ | |
3d4d4302 | 3210 | s = bfd_get_linker_section (dynobj, ".got.plt"); |
252b5132 | 3211 | BFD_ASSERT (s != NULL); |
eea6121a | 3212 | s->size += 4; |
252b5132 RH |
3213 | |
3214 | /* We also need to make an entry in the .rela.plt section. */ | |
3d4d4302 | 3215 | s = bfd_get_linker_section (dynobj, ".rela.plt"); |
252b5132 | 3216 | BFD_ASSERT (s != NULL); |
eea6121a | 3217 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 3218 | |
b34976b6 | 3219 | return TRUE; |
252b5132 RH |
3220 | } |
3221 | ||
3222 | /* Reinitialize the plt offset now that it is not used as a reference | |
3223 | count any more. */ | |
3224 | h->plt.offset = (bfd_vma) -1; | |
3225 | ||
3226 | /* If this is a weak symbol, and there is a real definition, the | |
3227 | processor independent code will have arranged for us to see the | |
3228 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 3229 | if (h->u.weakdef != NULL) |
252b5132 | 3230 | { |
f6e332e6 AM |
3231 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
3232 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3233 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3234 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 3235 | return TRUE; |
252b5132 RH |
3236 | } |
3237 | ||
3238 | /* This is a reference to a symbol defined by a dynamic object which | |
3239 | is not a function. */ | |
3240 | ||
3241 | /* If we are creating a shared library, we must presume that the | |
3242 | only references to the symbol are via the global offset table. | |
3243 | For such cases we need not do anything here; the relocations will | |
3244 | be handled correctly by relocate_section. */ | |
3245 | if (info->shared) | |
b34976b6 | 3246 | return TRUE; |
252b5132 | 3247 | |
e5f2b1de NC |
3248 | /* If there are no references to this symbol that do not use the |
3249 | GOT, we don't need to generate a copy reloc. */ | |
3250 | if (!h->non_got_ref) | |
3251 | return TRUE; | |
3252 | ||
252b5132 RH |
3253 | /* We must allocate the symbol in our .dynbss section, which will |
3254 | become part of the .bss section of the executable. There will be | |
3255 | an entry for this symbol in the .dynsym section. The dynamic | |
3256 | object will contain position independent code, so all references | |
3257 | from the dynamic object to this symbol will go through the global | |
3258 | offset table. The dynamic linker will use the .dynsym entry to | |
3259 | determine the address it must put in the global offset table, so | |
3260 | both the dynamic object and the regular object will refer to the | |
3261 | same memory location for the variable. */ | |
3262 | ||
3d4d4302 | 3263 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
252b5132 RH |
3264 | BFD_ASSERT (s != NULL); |
3265 | ||
3266 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
3267 | copy the initial value out of the dynamic object and into the | |
3268 | runtime process image. We need to remember the offset into the | |
3269 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 3270 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
252b5132 RH |
3271 | { |
3272 | asection *srel; | |
3273 | ||
3d4d4302 | 3274 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 | 3275 | BFD_ASSERT (srel != NULL); |
eea6121a | 3276 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 3277 | h->needs_copy = 1; |
252b5132 RH |
3278 | } |
3279 | ||
027297b7 | 3280 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
3281 | } |
3282 | ||
3283 | /* Set the sizes of the dynamic sections. */ | |
3284 | ||
b34976b6 | 3285 | static bfd_boolean |
252b5132 | 3286 | elf_m68k_size_dynamic_sections (output_bfd, info) |
aa91b392 | 3287 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
3288 | struct bfd_link_info *info; |
3289 | { | |
3290 | bfd *dynobj; | |
3291 | asection *s; | |
b34976b6 AM |
3292 | bfd_boolean plt; |
3293 | bfd_boolean relocs; | |
252b5132 RH |
3294 | |
3295 | dynobj = elf_hash_table (info)->dynobj; | |
3296 | BFD_ASSERT (dynobj != NULL); | |
3297 | ||
3298 | if (elf_hash_table (info)->dynamic_sections_created) | |
3299 | { | |
3300 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 3301 | if (info->executable) |
252b5132 | 3302 | { |
3d4d4302 | 3303 | s = bfd_get_linker_section (dynobj, ".interp"); |
252b5132 | 3304 | BFD_ASSERT (s != NULL); |
eea6121a | 3305 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
3306 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3307 | } | |
3308 | } | |
3309 | else | |
3310 | { | |
3311 | /* We may have created entries in the .rela.got section. | |
3312 | However, if we are not creating the dynamic sections, we will | |
3313 | not actually use these entries. Reset the size of .rela.got, | |
3314 | which will cause it to get stripped from the output file | |
3315 | below. */ | |
3d4d4302 | 3316 | s = bfd_get_linker_section (dynobj, ".rela.got"); |
252b5132 | 3317 | if (s != NULL) |
eea6121a | 3318 | s->size = 0; |
252b5132 RH |
3319 | } |
3320 | ||
b6152c34 AS |
3321 | /* If this is a -Bsymbolic shared link, then we need to discard all |
3322 | PC relative relocs against symbols defined in a regular object. | |
3323 | For the normal shared case we discard the PC relative relocs | |
3324 | against symbols that have become local due to visibility changes. | |
3325 | We allocated space for them in the check_relocs routine, but we | |
3326 | will not fill them in in the relocate_section routine. */ | |
3327 | if (info->shared) | |
0cca5f05 AS |
3328 | elf_link_hash_traverse (elf_hash_table (info), |
3329 | elf_m68k_discard_copies, | |
3330 | (PTR) info); | |
252b5132 RH |
3331 | |
3332 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3333 | determined the sizes of the various dynamic sections. Allocate | |
3334 | memory for them. */ | |
b34976b6 AM |
3335 | plt = FALSE; |
3336 | relocs = FALSE; | |
252b5132 RH |
3337 | for (s = dynobj->sections; s != NULL; s = s->next) |
3338 | { | |
3339 | const char *name; | |
252b5132 RH |
3340 | |
3341 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3342 | continue; | |
3343 | ||
3344 | /* It's OK to base decisions on the section name, because none | |
3345 | of the dynobj section names depend upon the input files. */ | |
3346 | name = bfd_get_section_name (dynobj, s); | |
3347 | ||
252b5132 RH |
3348 | if (strcmp (name, ".plt") == 0) |
3349 | { | |
c456f082 AM |
3350 | /* Remember whether there is a PLT. */ |
3351 | plt = s->size != 0; | |
252b5132 | 3352 | } |
0112cd26 | 3353 | else if (CONST_STRNEQ (name, ".rela")) |
252b5132 | 3354 | { |
c456f082 | 3355 | if (s->size != 0) |
252b5132 | 3356 | { |
b34976b6 | 3357 | relocs = TRUE; |
252b5132 RH |
3358 | |
3359 | /* We use the reloc_count field as a counter if we need | |
3360 | to copy relocs into the output file. */ | |
3361 | s->reloc_count = 0; | |
3362 | } | |
3363 | } | |
0112cd26 | 3364 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 3365 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
3366 | { |
3367 | /* It's not one of our sections, so don't allocate space. */ | |
3368 | continue; | |
3369 | } | |
3370 | ||
c456f082 | 3371 | if (s->size == 0) |
252b5132 | 3372 | { |
c456f082 AM |
3373 | /* If we don't need this section, strip it from the |
3374 | output file. This is mostly to handle .rela.bss and | |
3375 | .rela.plt. We must create both sections in | |
3376 | create_dynamic_sections, because they must be created | |
3377 | before the linker maps input sections to output | |
3378 | sections. The linker does that before | |
3379 | adjust_dynamic_symbol is called, and it is that | |
3380 | function which decides whether anything needs to go | |
3381 | into these sections. */ | |
8423293d | 3382 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
3383 | continue; |
3384 | } | |
3385 | ||
c456f082 AM |
3386 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3387 | continue; | |
3388 | ||
252b5132 | 3389 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
3390 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
3391 | Unused entries should be reclaimed before the section's contents | |
3392 | are written out, but at the moment this does not happen. Thus in | |
3393 | order to prevent writing out garbage, we initialise the section's | |
3394 | contents to zero. */ | |
eea6121a | 3395 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 3396 | if (s->contents == NULL) |
b34976b6 | 3397 | return FALSE; |
252b5132 RH |
3398 | } |
3399 | ||
3400 | if (elf_hash_table (info)->dynamic_sections_created) | |
3401 | { | |
3402 | /* Add some entries to the .dynamic section. We fill in the | |
3403 | values later, in elf_m68k_finish_dynamic_sections, but we | |
3404 | must add the entries now so that we get the correct size for | |
3405 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3406 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3407 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3408 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3409 | |
252b5132 RH |
3410 | if (!info->shared) |
3411 | { | |
dc810e39 | 3412 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3413 | return FALSE; |
252b5132 RH |
3414 | } |
3415 | ||
3416 | if (plt) | |
3417 | { | |
dc810e39 AM |
3418 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3419 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3420 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3421 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3422 | return FALSE; |
252b5132 RH |
3423 | } |
3424 | ||
3425 | if (relocs) | |
3426 | { | |
dc810e39 AM |
3427 | if (!add_dynamic_entry (DT_RELA, 0) |
3428 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3429 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3430 | return FALSE; |
252b5132 RH |
3431 | } |
3432 | ||
aa91b392 | 3433 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 3434 | { |
dc810e39 | 3435 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3436 | return FALSE; |
252b5132 RH |
3437 | } |
3438 | } | |
dc810e39 | 3439 | #undef add_dynamic_entry |
252b5132 | 3440 | |
b34976b6 | 3441 | return TRUE; |
252b5132 RH |
3442 | } |
3443 | ||
0cca5f05 | 3444 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
3445 | creating a shared object. In the -Bsymbolic case it discards the |
3446 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 3447 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
3448 | discards space for pc-relative relocs that have become local due to |
3449 | symbol visibility changes. We allocated space for them in the | |
3450 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
3451 | relocate_section routine. |
3452 | ||
3453 | We also check whether any of the remaining relocations apply | |
3454 | against a readonly section, and set the DF_TEXTREL flag in this | |
3455 | case. */ | |
252b5132 | 3456 | |
b34976b6 | 3457 | static bfd_boolean |
b6152c34 | 3458 | elf_m68k_discard_copies (h, inf) |
0cca5f05 | 3459 | struct elf_link_hash_entry *h; |
b6152c34 | 3460 | PTR inf; |
252b5132 | 3461 | { |
b6152c34 | 3462 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
3463 | struct elf_m68k_pcrel_relocs_copied *s; |
3464 | ||
2516a1ee | 3465 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
3e829b4a AS |
3466 | { |
3467 | if ((info->flags & DF_TEXTREL) == 0) | |
3468 | { | |
3469 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
3470 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3471 | s != NULL; | |
3472 | s = s->next) | |
3e829b4a AS |
3473 | if ((s->section->flags & SEC_READONLY) != 0) |
3474 | { | |
3475 | info->flags |= DF_TEXTREL; | |
3476 | break; | |
3477 | } | |
3478 | } | |
0cca5f05 | 3479 | |
cab0ad83 AS |
3480 | /* Make sure undefined weak symbols are output as a dynamic symbol |
3481 | in PIEs. */ | |
3482 | if (h->non_got_ref | |
3483 | && h->root.type == bfd_link_hash_undefweak | |
3484 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3485 | && h->dynindx == -1 | |
3486 | && !h->forced_local) | |
3487 | { | |
3488 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3489 | return FALSE; | |
3490 | } | |
3491 | ||
3e829b4a AS |
3492 | return TRUE; |
3493 | } | |
252b5132 | 3494 | |
0cca5f05 AS |
3495 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3496 | s != NULL; | |
3497 | s = s->next) | |
eea6121a | 3498 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 3499 | |
b34976b6 | 3500 | return TRUE; |
252b5132 RH |
3501 | } |
3502 | ||
cf869cce NC |
3503 | |
3504 | /* Install relocation RELA. */ | |
3505 | ||
3506 | static void | |
3507 | elf_m68k_install_rela (bfd *output_bfd, | |
3508 | asection *srela, | |
3509 | Elf_Internal_Rela *rela) | |
3510 | { | |
3511 | bfd_byte *loc; | |
3512 | ||
3513 | loc = srela->contents; | |
3514 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
3515 | bfd_elf32_swap_reloca_out (output_bfd, rela, loc); | |
3516 | } | |
3517 | ||
325e58c7 NC |
3518 | /* Find the base offsets for thread-local storage in this object, |
3519 | for GD/LD and IE/LE respectively. */ | |
3520 | ||
3521 | #define DTP_OFFSET 0x8000 | |
3522 | #define TP_OFFSET 0x7000 | |
cf869cce NC |
3523 | |
3524 | static bfd_vma | |
3525 | dtpoff_base (struct bfd_link_info *info) | |
3526 | { | |
3527 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3528 | if (elf_hash_table (info)->tls_sec == NULL) | |
3529 | return 0; | |
325e58c7 | 3530 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; |
cf869cce NC |
3531 | } |
3532 | ||
cf869cce | 3533 | static bfd_vma |
325e58c7 | 3534 | tpoff_base (struct bfd_link_info *info) |
cf869cce | 3535 | { |
cf869cce | 3536 | /* If tls_sec is NULL, we should have signalled an error already. */ |
325e58c7 | 3537 | if (elf_hash_table (info)->tls_sec == NULL) |
cf869cce | 3538 | return 0; |
325e58c7 NC |
3539 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; |
3540 | } | |
3541 | ||
3542 | /* Output necessary relocation to handle a symbol during static link. | |
3543 | This function is called from elf_m68k_relocate_section. */ | |
3544 | ||
3545 | static void | |
3546 | elf_m68k_init_got_entry_static (struct bfd_link_info *info, | |
3547 | bfd *output_bfd, | |
3548 | enum elf_m68k_reloc_type r_type, | |
3549 | asection *sgot, | |
3550 | bfd_vma got_entry_offset, | |
3551 | bfd_vma relocation) | |
3552 | { | |
3553 | switch (elf_m68k_reloc_got_type (r_type)) | |
3554 | { | |
3555 | case R_68K_GOT32O: | |
3556 | bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset); | |
3557 | break; | |
3558 | ||
3559 | case R_68K_TLS_GD32: | |
3560 | /* We know the offset within the module, | |
3561 | put it into the second GOT slot. */ | |
3562 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3563 | sgot->contents + got_entry_offset + 4); | |
3564 | /* FALLTHRU */ | |
3565 | ||
3566 | case R_68K_TLS_LDM32: | |
3567 | /* Mark it as belonging to module 1, the executable. */ | |
3568 | bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset); | |
3569 | break; | |
3570 | ||
3571 | case R_68K_TLS_IE32: | |
3572 | bfd_put_32 (output_bfd, relocation - tpoff_base (info), | |
3573 | sgot->contents + got_entry_offset); | |
3574 | break; | |
3575 | ||
3576 | default: | |
3577 | BFD_ASSERT (FALSE); | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | /* Output necessary relocation to handle a local symbol | |
3582 | during dynamic link. | |
3583 | This function is called either from elf_m68k_relocate_section | |
3584 | or from elf_m68k_finish_dynamic_symbol. */ | |
3585 | ||
3586 | static void | |
3587 | elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info, | |
3588 | bfd *output_bfd, | |
3589 | enum elf_m68k_reloc_type r_type, | |
3590 | asection *sgot, | |
3591 | bfd_vma got_entry_offset, | |
3592 | bfd_vma relocation, | |
3593 | asection *srela) | |
3594 | { | |
3595 | Elf_Internal_Rela outrel; | |
3596 | ||
3597 | switch (elf_m68k_reloc_got_type (r_type)) | |
3598 | { | |
3599 | case R_68K_GOT32O: | |
3600 | /* Emit RELATIVE relocation to initialize GOT slot | |
3601 | at run-time. */ | |
3602 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
3603 | outrel.r_addend = relocation; | |
3604 | break; | |
3605 | ||
3606 | case R_68K_TLS_GD32: | |
3607 | /* We know the offset within the module, | |
3608 | put it into the second GOT slot. */ | |
3609 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3610 | sgot->contents + got_entry_offset + 4); | |
3611 | /* FALLTHRU */ | |
3612 | ||
3613 | case R_68K_TLS_LDM32: | |
3614 | /* We don't know the module number, | |
3615 | create a relocation for it. */ | |
3616 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32); | |
3617 | outrel.r_addend = 0; | |
3618 | break; | |
3619 | ||
3620 | case R_68K_TLS_IE32: | |
3621 | /* Emit TPREL relocation to initialize GOT slot | |
3622 | at run-time. */ | |
3623 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32); | |
3624 | outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma; | |
3625 | break; | |
3626 | ||
3627 | default: | |
3628 | BFD_ASSERT (FALSE); | |
3629 | } | |
3630 | ||
3631 | /* Offset of the GOT entry. */ | |
3632 | outrel.r_offset = (sgot->output_section->vma | |
3633 | + sgot->output_offset | |
3634 | + got_entry_offset); | |
3635 | ||
3636 | /* Install one of the above relocations. */ | |
3637 | elf_m68k_install_rela (output_bfd, srela, &outrel); | |
3638 | ||
3639 | bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset); | |
cf869cce NC |
3640 | } |
3641 | ||
252b5132 RH |
3642 | /* Relocate an M68K ELF section. */ |
3643 | ||
b34976b6 | 3644 | static bfd_boolean |
252b5132 RH |
3645 | elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section, |
3646 | contents, relocs, local_syms, local_sections) | |
3647 | bfd *output_bfd; | |
3648 | struct bfd_link_info *info; | |
3649 | bfd *input_bfd; | |
3650 | asection *input_section; | |
3651 | bfd_byte *contents; | |
3652 | Elf_Internal_Rela *relocs; | |
3653 | Elf_Internal_Sym *local_syms; | |
3654 | asection **local_sections; | |
3655 | { | |
3656 | bfd *dynobj; | |
3657 | Elf_Internal_Shdr *symtab_hdr; | |
3658 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
3659 | asection *sgot; |
3660 | asection *splt; | |
3661 | asection *sreloc; | |
325e58c7 | 3662 | asection *srela; |
7fb9f789 | 3663 | struct elf_m68k_got *got; |
252b5132 RH |
3664 | Elf_Internal_Rela *rel; |
3665 | Elf_Internal_Rela *relend; | |
3666 | ||
3667 | dynobj = elf_hash_table (info)->dynobj; | |
3668 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3669 | sym_hashes = elf_sym_hashes (input_bfd); | |
252b5132 RH |
3670 | |
3671 | sgot = NULL; | |
3672 | splt = NULL; | |
3673 | sreloc = NULL; | |
325e58c7 | 3674 | srela = NULL; |
252b5132 | 3675 | |
7fb9f789 NC |
3676 | got = NULL; |
3677 | ||
252b5132 RH |
3678 | rel = relocs; |
3679 | relend = relocs + input_section->reloc_count; | |
3680 | for (; rel < relend; rel++) | |
3681 | { | |
3682 | int r_type; | |
3683 | reloc_howto_type *howto; | |
3684 | unsigned long r_symndx; | |
3685 | struct elf_link_hash_entry *h; | |
3686 | Elf_Internal_Sym *sym; | |
3687 | asection *sec; | |
3688 | bfd_vma relocation; | |
44f745a6 | 3689 | bfd_boolean unresolved_reloc; |
252b5132 RH |
3690 | bfd_reloc_status_type r; |
3691 | ||
3692 | r_type = ELF32_R_TYPE (rel->r_info); | |
3693 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
3694 | { | |
3695 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3696 | return FALSE; |
252b5132 RH |
3697 | } |
3698 | howto = howto_table + r_type; | |
3699 | ||
3700 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3701 | ||
252b5132 RH |
3702 | h = NULL; |
3703 | sym = NULL; | |
3704 | sec = NULL; | |
44f745a6 | 3705 | unresolved_reloc = FALSE; |
560e09e9 | 3706 | |
252b5132 RH |
3707 | if (r_symndx < symtab_hdr->sh_info) |
3708 | { | |
3709 | sym = local_syms + r_symndx; | |
3710 | sec = local_sections[r_symndx]; | |
8517fae7 | 3711 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
3712 | } |
3713 | else | |
3714 | { | |
560e09e9 NC |
3715 | bfd_boolean warned; |
3716 | ||
b2a8e766 AM |
3717 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3718 | r_symndx, symtab_hdr, sym_hashes, | |
3719 | h, sec, relocation, | |
3720 | unresolved_reloc, warned); | |
252b5132 RH |
3721 | } |
3722 | ||
dbaa2011 | 3723 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 3724 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3725 | rel, 1, relend, howto, 0, contents); |
ab96bf03 AM |
3726 | |
3727 | if (info->relocatable) | |
3728 | continue; | |
3729 | ||
252b5132 RH |
3730 | switch (r_type) |
3731 | { | |
3732 | case R_68K_GOT8: | |
3733 | case R_68K_GOT16: | |
3734 | case R_68K_GOT32: | |
3735 | /* Relocation is to the address of the entry for this symbol | |
3736 | in the global offset table. */ | |
3737 | if (h != NULL | |
3738 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7fb9f789 | 3739 | { |
7fb9f789 NC |
3740 | if (elf_m68k_hash_table (info)->local_gp_p) |
3741 | { | |
3742 | bfd_vma sgot_output_offset; | |
3743 | bfd_vma got_offset; | |
3744 | ||
3745 | if (sgot == NULL) | |
3746 | { | |
3d4d4302 | 3747 | sgot = bfd_get_linker_section (dynobj, ".got"); |
7fb9f789 NC |
3748 | |
3749 | if (sgot != NULL) | |
3750 | sgot_output_offset = sgot->output_offset; | |
3751 | else | |
3752 | /* In this case we have a reference to | |
3753 | _GLOBAL_OFFSET_TABLE_, but the GOT itself is | |
3754 | empty. | |
3755 | ??? Issue a warning? */ | |
3756 | sgot_output_offset = 0; | |
3757 | } | |
3758 | else | |
3759 | sgot_output_offset = sgot->output_offset; | |
3760 | ||
3761 | if (got == NULL) | |
3762 | { | |
3763 | struct elf_m68k_bfd2got_entry *bfd2got_entry; | |
3764 | ||
3765 | bfd2got_entry | |
3766 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
3767 | input_bfd, SEARCH, NULL); | |
3768 | ||
3769 | if (bfd2got_entry != NULL) | |
3770 | { | |
3771 | got = bfd2got_entry->got; | |
3772 | BFD_ASSERT (got != NULL); | |
3773 | ||
3774 | got_offset = got->offset; | |
3775 | } | |
3776 | else | |
3777 | /* In this case we have a reference to | |
3778 | _GLOBAL_OFFSET_TABLE_, but no other references | |
3779 | accessing any GOT entries. | |
3780 | ??? Issue a warning? */ | |
3781 | got_offset = 0; | |
3782 | } | |
3783 | else | |
3784 | got_offset = got->offset; | |
3785 | ||
3786 | /* Adjust GOT pointer to point to the GOT | |
3787 | assigned to input_bfd. */ | |
f57718b4 | 3788 | rel->r_addend += sgot_output_offset + got_offset; |
7fb9f789 NC |
3789 | } |
3790 | else | |
3791 | BFD_ASSERT (got == NULL || got->offset == 0); | |
3792 | ||
3793 | break; | |
3794 | } | |
252b5132 RH |
3795 | /* Fall through. */ |
3796 | case R_68K_GOT8O: | |
3797 | case R_68K_GOT16O: | |
3798 | case R_68K_GOT32O: | |
cf869cce NC |
3799 | |
3800 | case R_68K_TLS_LDM32: | |
3801 | case R_68K_TLS_LDM16: | |
3802 | case R_68K_TLS_LDM8: | |
3803 | ||
3804 | case R_68K_TLS_GD8: | |
3805 | case R_68K_TLS_GD16: | |
3806 | case R_68K_TLS_GD32: | |
3807 | ||
3808 | case R_68K_TLS_IE8: | |
3809 | case R_68K_TLS_IE16: | |
3810 | case R_68K_TLS_IE32: | |
3811 | ||
252b5132 RH |
3812 | /* Relocation is the offset of the entry for this symbol in |
3813 | the global offset table. */ | |
3814 | ||
3815 | { | |
7fb9f789 NC |
3816 | struct elf_m68k_got_entry_key key_; |
3817 | bfd_vma *off_ptr; | |
252b5132 RH |
3818 | bfd_vma off; |
3819 | ||
3820 | if (sgot == NULL) | |
3821 | { | |
3d4d4302 | 3822 | sgot = bfd_get_linker_section (dynobj, ".got"); |
252b5132 RH |
3823 | BFD_ASSERT (sgot != NULL); |
3824 | } | |
3825 | ||
7fb9f789 NC |
3826 | if (got == NULL) |
3827 | { | |
3828 | got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
3829 | input_bfd, MUST_FIND, | |
3830 | NULL)->got; | |
3831 | BFD_ASSERT (got != NULL); | |
3832 | } | |
3833 | ||
3834 | /* Get GOT offset for this symbol. */ | |
cf869cce NC |
3835 | elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx, |
3836 | r_type); | |
7fb9f789 NC |
3837 | off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND, |
3838 | NULL)->u.s2.offset; | |
3839 | off = *off_ptr; | |
3840 | ||
cf869cce NC |
3841 | /* The offset must always be a multiple of 4. We use |
3842 | the least significant bit to record whether we have | |
3843 | already generated the necessary reloc. */ | |
3844 | if ((off & 1) != 0) | |
3845 | off &= ~1; | |
3846 | else | |
252b5132 | 3847 | { |
cf869cce NC |
3848 | if (h != NULL |
3849 | /* @TLSLDM relocations are bounded to the module, in | |
3850 | which the symbol is defined -- not to the symbol | |
3851 | itself. */ | |
3852 | && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32) | |
252b5132 | 3853 | { |
cf869cce NC |
3854 | bfd_boolean dyn; |
3855 | ||
3856 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
3857 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3858 | || (info->shared | |
3859 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3860 | || (ELF_ST_VISIBILITY (h->other) | |
3861 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 | 3862 | { |
cf869cce NC |
3863 | /* This is actually a static link, or it is a |
3864 | -Bsymbolic link and the symbol is defined | |
3865 | locally, or the symbol was forced to be local | |
325e58c7 | 3866 | because of a version file. We must initialize |
cf869cce NC |
3867 | this entry in the global offset table. Since |
3868 | the offset must always be a multiple of 4, we | |
3869 | use the least significant bit to record whether | |
3870 | we have initialized it already. | |
3871 | ||
3872 | When doing a dynamic link, we create a .rela.got | |
3873 | relocation entry to initialize the value. This | |
3874 | is done in the finish_dynamic_symbol routine. */ | |
3875 | ||
325e58c7 NC |
3876 | elf_m68k_init_got_entry_static (info, |
3877 | output_bfd, | |
3878 | r_type, | |
3879 | sgot, | |
3880 | off, | |
3881 | relocation); | |
cf869cce | 3882 | |
7fb9f789 | 3883 | *off_ptr |= 1; |
252b5132 | 3884 | } |
cf869cce NC |
3885 | else |
3886 | unresolved_reloc = FALSE; | |
252b5132 | 3887 | } |
cf869cce | 3888 | else if (info->shared) /* && h == NULL */ |
325e58c7 | 3889 | /* Process local symbol during dynamic link. */ |
252b5132 | 3890 | { |
325e58c7 | 3891 | if (srela == NULL) |
252b5132 | 3892 | { |
3d4d4302 | 3893 | srela = bfd_get_linker_section (dynobj, ".rela.got"); |
325e58c7 | 3894 | BFD_ASSERT (srela != NULL); |
cf869cce | 3895 | } |
cf869cce | 3896 | |
325e58c7 NC |
3897 | elf_m68k_init_got_entry_local_shared (info, |
3898 | output_bfd, | |
3899 | r_type, | |
3900 | sgot, | |
3901 | off, | |
3902 | relocation, | |
3903 | srela); | |
cf869cce NC |
3904 | |
3905 | *off_ptr |= 1; | |
3906 | } | |
3907 | else /* h == NULL && !info->shared */ | |
3908 | { | |
325e58c7 NC |
3909 | elf_m68k_init_got_entry_static (info, |
3910 | output_bfd, | |
3911 | r_type, | |
3912 | sgot, | |
3913 | off, | |
3914 | relocation); | |
252b5132 | 3915 | |
7fb9f789 | 3916 | *off_ptr |= 1; |
252b5132 RH |
3917 | } |
3918 | } | |
3919 | ||
cf869cce NC |
3920 | /* We don't use elf_m68k_reloc_got_type in the condition below |
3921 | because this is the only place where difference between | |
3922 | R_68K_GOTx and R_68K_GOTxO relocations matters. */ | |
3923 | if (r_type == R_68K_GOT32O | |
252b5132 | 3924 | || r_type == R_68K_GOT16O |
cf869cce NC |
3925 | || r_type == R_68K_GOT8O |
3926 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32 | |
3927 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32 | |
3928 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32) | |
252b5132 | 3929 | { |
7fb9f789 NC |
3930 | /* GOT pointer is adjusted to point to the start/middle |
3931 | of local GOT. Adjust the offset accordingly. */ | |
3932 | BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p | |
3933 | || off >= got->offset); | |
3934 | ||
3935 | if (elf_m68k_hash_table (info)->local_gp_p) | |
3936 | relocation = off - got->offset; | |
3937 | else | |
3938 | { | |
3939 | BFD_ASSERT (got->offset == 0); | |
3940 | relocation = sgot->output_offset + off; | |
3941 | } | |
3942 | ||
252b5132 RH |
3943 | /* This relocation does not use the addend. */ |
3944 | rel->r_addend = 0; | |
3945 | } | |
3946 | else | |
7fb9f789 NC |
3947 | relocation = (sgot->output_section->vma + sgot->output_offset |
3948 | + off); | |
252b5132 RH |
3949 | } |
3950 | break; | |
3951 | ||
cf869cce NC |
3952 | case R_68K_TLS_LDO32: |
3953 | case R_68K_TLS_LDO16: | |
3954 | case R_68K_TLS_LDO8: | |
3955 | relocation -= dtpoff_base (info); | |
3956 | break; | |
3957 | ||
3958 | case R_68K_TLS_LE32: | |
3959 | case R_68K_TLS_LE16: | |
3960 | case R_68K_TLS_LE8: | |
3a4ae681 | 3961 | if (info->shared && !info->pie) |
cf869cce NC |
3962 | { |
3963 | (*_bfd_error_handler) | |
3964 | (_("%B(%A+0x%lx): R_68K_TLS_LE32 relocation not permitted " | |
3965 | "in shared object"), | |
3966 | input_bfd, input_section, (long) rel->r_offset, howto->name); | |
3967 | ||
3968 | return FALSE; | |
3969 | } | |
3970 | else | |
325e58c7 | 3971 | relocation -= tpoff_base (info); |
cf869cce NC |
3972 | |
3973 | break; | |
3974 | ||
252b5132 RH |
3975 | case R_68K_PLT8: |
3976 | case R_68K_PLT16: | |
3977 | case R_68K_PLT32: | |
3978 | /* Relocation is to the entry for this symbol in the | |
3979 | procedure linkage table. */ | |
3980 | ||
3981 | /* Resolve a PLTxx reloc against a local symbol directly, | |
3982 | without using the procedure linkage table. */ | |
3983 | if (h == NULL) | |
3984 | break; | |
3985 | ||
3986 | if (h->plt.offset == (bfd_vma) -1 | |
3987 | || !elf_hash_table (info)->dynamic_sections_created) | |
3988 | { | |
3989 | /* We didn't make a PLT entry for this symbol. This | |
3990 | happens when statically linking PIC code, or when | |
3991 | using -Bsymbolic. */ | |
3992 | break; | |
3993 | } | |
3994 | ||
3995 | if (splt == NULL) | |
3996 | { | |
3d4d4302 | 3997 | splt = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
3998 | BFD_ASSERT (splt != NULL); |
3999 | } | |
4000 | ||
4001 | relocation = (splt->output_section->vma | |
4002 | + splt->output_offset | |
4003 | + h->plt.offset); | |
44f745a6 | 4004 | unresolved_reloc = FALSE; |
252b5132 RH |
4005 | break; |
4006 | ||
4007 | case R_68K_PLT8O: | |
4008 | case R_68K_PLT16O: | |
4009 | case R_68K_PLT32O: | |
4010 | /* Relocation is the offset of the entry for this symbol in | |
4011 | the procedure linkage table. */ | |
4012 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
4013 | ||
4014 | if (splt == NULL) | |
4015 | { | |
3d4d4302 | 4016 | splt = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
4017 | BFD_ASSERT (splt != NULL); |
4018 | } | |
4019 | ||
4020 | relocation = h->plt.offset; | |
44f745a6 | 4021 | unresolved_reloc = FALSE; |
252b5132 RH |
4022 | |
4023 | /* This relocation does not use the addend. */ | |
4024 | rel->r_addend = 0; | |
4025 | ||
4026 | break; | |
4027 | ||
252b5132 RH |
4028 | case R_68K_8: |
4029 | case R_68K_16: | |
4030 | case R_68K_32: | |
2516a1ee AS |
4031 | case R_68K_PC8: |
4032 | case R_68K_PC16: | |
4033 | case R_68K_PC32: | |
252b5132 | 4034 | if (info->shared |
cf35638d | 4035 | && r_symndx != STN_UNDEF |
252b5132 | 4036 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f AS |
4037 | && (h == NULL |
4038 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4039 | || h->root.type != bfd_link_hash_undefweak) | |
252b5132 RH |
4040 | && ((r_type != R_68K_PC8 |
4041 | && r_type != R_68K_PC16 | |
4042 | && r_type != R_68K_PC32) | |
2516a1ee | 4043 | || !SYMBOL_CALLS_LOCAL (info, h))) |
252b5132 RH |
4044 | { |
4045 | Elf_Internal_Rela outrel; | |
947216bf | 4046 | bfd_byte *loc; |
b34976b6 | 4047 | bfd_boolean skip, relocate; |
252b5132 RH |
4048 | |
4049 | /* When generating a shared object, these relocations | |
4050 | are copied into the output file to be resolved at run | |
4051 | time. */ | |
4052 | ||
b34976b6 AM |
4053 | skip = FALSE; |
4054 | relocate = FALSE; | |
252b5132 | 4055 | |
c629eae0 JJ |
4056 | outrel.r_offset = |
4057 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4058 | rel->r_offset); | |
4059 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 4060 | skip = TRUE; |
0bb2d96a | 4061 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 4062 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
4063 | outrel.r_offset += (input_section->output_section->vma |
4064 | + input_section->output_offset); | |
4065 | ||
4066 | if (skip) | |
0bb2d96a | 4067 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 4068 | else if (h != NULL |
d2ff124f AS |
4069 | && h->dynindx != -1 |
4070 | && (r_type == R_68K_PC8 | |
4071 | || r_type == R_68K_PC16 | |
4072 | || r_type == R_68K_PC32 | |
4073 | || !info->shared | |
4074 | || !info->symbolic | |
f5385ebf | 4075 | || !h->def_regular)) |
252b5132 | 4076 | { |
252b5132 | 4077 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 4078 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
4079 | } |
4080 | else | |
4081 | { | |
d2ff124f | 4082 | /* This symbol is local, or marked to become local. */ |
74541ad4 AM |
4083 | outrel.r_addend = relocation + rel->r_addend; |
4084 | ||
252b5132 RH |
4085 | if (r_type == R_68K_32) |
4086 | { | |
b34976b6 | 4087 | relocate = TRUE; |
252b5132 | 4088 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
252b5132 RH |
4089 | } |
4090 | else | |
4091 | { | |
4092 | long indx; | |
4093 | ||
8517fae7 | 4094 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
4095 | indx = 0; |
4096 | else if (sec == NULL || sec->owner == NULL) | |
4097 | { | |
4098 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 4099 | return FALSE; |
252b5132 RH |
4100 | } |
4101 | else | |
4102 | { | |
4103 | asection *osec; | |
4104 | ||
74541ad4 AM |
4105 | /* We are turning this relocation into one |
4106 | against a section symbol. It would be | |
4107 | proper to subtract the symbol's value, | |
4108 | osec->vma, from the emitted reloc addend, | |
4109 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
4110 | osec = sec->output_section; |
4111 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
4112 | if (indx == 0) |
4113 | { | |
4114 | struct elf_link_hash_table *htab; | |
4115 | htab = elf_hash_table (info); | |
4116 | osec = htab->text_index_section; | |
4117 | indx = elf_section_data (osec)->dynindx; | |
4118 | } | |
4119 | BFD_ASSERT (indx != 0); | |
252b5132 RH |
4120 | } |
4121 | ||
252b5132 | 4122 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
4123 | } |
4124 | } | |
4125 | ||
d2ff124f AS |
4126 | sreloc = elf_section_data (input_section)->sreloc; |
4127 | if (sreloc == NULL) | |
4128 | abort (); | |
4129 | ||
947216bf AM |
4130 | loc = sreloc->contents; |
4131 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
4132 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
4133 | |
4134 | /* This reloc will be computed at runtime, so there's no | |
4135 | need to do anything now, except for R_68K_32 | |
4136 | relocations that have been turned into | |
4137 | R_68K_RELATIVE. */ | |
4138 | if (!relocate) | |
4139 | continue; | |
4140 | } | |
4141 | ||
4142 | break; | |
4143 | ||
4144 | case R_68K_GNU_VTINHERIT: | |
4145 | case R_68K_GNU_VTENTRY: | |
4146 | /* These are no-ops in the end. */ | |
4147 | continue; | |
4148 | ||
4149 | default: | |
4150 | break; | |
4151 | } | |
4152 | ||
44f745a6 AS |
4153 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4154 | because such sections are not SEC_ALLOC and thus ld.so will | |
4155 | not process them. */ | |
4156 | if (unresolved_reloc | |
4157 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
4158 | && h->def_dynamic) |
4159 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4160 | rel->r_offset) != (bfd_vma) -1) | |
44f745a6 AS |
4161 | { |
4162 | (*_bfd_error_handler) | |
843fe662 | 4163 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4164 | input_bfd, |
4165 | input_section, | |
44f745a6 | 4166 | (long) rel->r_offset, |
843fe662 | 4167 | howto->name, |
44f745a6 AS |
4168 | h->root.root.string); |
4169 | return FALSE; | |
4170 | } | |
4171 | ||
cf35638d | 4172 | if (r_symndx != STN_UNDEF |
cf869cce NC |
4173 | && r_type != R_68K_NONE |
4174 | && (h == NULL | |
4175 | || h->root.type == bfd_link_hash_defined | |
4176 | || h->root.type == bfd_link_hash_defweak)) | |
4177 | { | |
4178 | char sym_type; | |
4179 | ||
4180 | sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type; | |
4181 | ||
4182 | if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS)) | |
4183 | { | |
4184 | const char *name; | |
4185 | ||
4186 | if (h != NULL) | |
4187 | name = h->root.root.string; | |
4188 | else | |
4189 | { | |
4190 | name = (bfd_elf_string_from_elf_section | |
4191 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4192 | if (name == NULL || *name == '\0') | |
4193 | name = bfd_section_name (input_bfd, sec); | |
4194 | } | |
4195 | ||
4196 | (*_bfd_error_handler) | |
4197 | ((sym_type == STT_TLS | |
4198 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
4199 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
4200 | input_bfd, | |
4201 | input_section, | |
4202 | (long) rel->r_offset, | |
4203 | howto->name, | |
4204 | name); | |
4205 | } | |
4206 | } | |
4207 | ||
252b5132 RH |
4208 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
4209 | contents, rel->r_offset, | |
4210 | relocation, rel->r_addend); | |
4211 | ||
4212 | if (r != bfd_reloc_ok) | |
4213 | { | |
44f745a6 AS |
4214 | const char *name; |
4215 | ||
4216 | if (h != NULL) | |
4217 | name = h->root.root.string; | |
4218 | else | |
252b5132 | 4219 | { |
44f745a6 AS |
4220 | name = bfd_elf_string_from_elf_section (input_bfd, |
4221 | symtab_hdr->sh_link, | |
4222 | sym->st_name); | |
4223 | if (name == NULL) | |
4224 | return FALSE; | |
4225 | if (*name == '\0') | |
4226 | name = bfd_section_name (input_bfd, sec); | |
4227 | } | |
252b5132 | 4228 | |
44f745a6 AS |
4229 | if (r == bfd_reloc_overflow) |
4230 | { | |
4231 | if (!(info->callbacks->reloc_overflow | |
dfeffb9f L |
4232 | (info, (h ? &h->root : NULL), name, howto->name, |
4233 | (bfd_vma) 0, input_bfd, input_section, | |
4234 | rel->r_offset))) | |
44f745a6 AS |
4235 | return FALSE; |
4236 | } | |
4237 | else | |
4238 | { | |
4239 | (*_bfd_error_handler) | |
d003868e AM |
4240 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
4241 | input_bfd, input_section, | |
44f745a6 AS |
4242 | (long) rel->r_offset, name, (int) r); |
4243 | return FALSE; | |
252b5132 RH |
4244 | } |
4245 | } | |
4246 | } | |
4247 | ||
b34976b6 | 4248 | return TRUE; |
252b5132 RH |
4249 | } |
4250 | ||
cc3e26be RS |
4251 | /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET |
4252 | into section SEC. */ | |
4253 | ||
4254 | static void | |
4255 | elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value) | |
4256 | { | |
4257 | /* Make VALUE PC-relative. */ | |
4258 | value -= sec->output_section->vma + offset; | |
4259 | ||
4260 | /* Apply any in-place addend. */ | |
4261 | value += bfd_get_32 (sec->owner, sec->contents + offset); | |
4262 | ||
4263 | bfd_put_32 (sec->owner, value, sec->contents + offset); | |
4264 | } | |
4265 | ||
252b5132 RH |
4266 | /* Finish up dynamic symbol handling. We set the contents of various |
4267 | dynamic sections here. */ | |
4268 | ||
b34976b6 | 4269 | static bfd_boolean |
252b5132 RH |
4270 | elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym) |
4271 | bfd *output_bfd; | |
4272 | struct bfd_link_info *info; | |
4273 | struct elf_link_hash_entry *h; | |
4274 | Elf_Internal_Sym *sym; | |
4275 | { | |
4276 | bfd *dynobj; | |
4277 | ||
4278 | dynobj = elf_hash_table (info)->dynobj; | |
4279 | ||
4280 | if (h->plt.offset != (bfd_vma) -1) | |
4281 | { | |
cc3e26be | 4282 | const struct elf_m68k_plt_info *plt_info; |
252b5132 RH |
4283 | asection *splt; |
4284 | asection *sgot; | |
4285 | asection *srela; | |
4286 | bfd_vma plt_index; | |
4287 | bfd_vma got_offset; | |
4288 | Elf_Internal_Rela rela; | |
947216bf | 4289 | bfd_byte *loc; |
252b5132 RH |
4290 | |
4291 | /* This symbol has an entry in the procedure linkage table. Set | |
4292 | it up. */ | |
4293 | ||
4294 | BFD_ASSERT (h->dynindx != -1); | |
4295 | ||
cc3e26be | 4296 | plt_info = elf_m68k_hash_table (info)->plt_info; |
3d4d4302 AM |
4297 | splt = bfd_get_linker_section (dynobj, ".plt"); |
4298 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); | |
4299 | srela = bfd_get_linker_section (dynobj, ".rela.plt"); | |
252b5132 RH |
4300 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
4301 | ||
4302 | /* Get the index in the procedure linkage table which | |
4303 | corresponds to this symbol. This is the index of this symbol | |
4304 | in all the symbols for which we are making plt entries. The | |
4305 | first entry in the procedure linkage table is reserved. */ | |
cc3e26be | 4306 | plt_index = (h->plt.offset / plt_info->size) - 1; |
252b5132 RH |
4307 | |
4308 | /* Get the offset into the .got table of the entry that | |
4309 | corresponds to this function. Each .got entry is 4 bytes. | |
4310 | The first three are reserved. */ | |
4311 | got_offset = (plt_index + 3) * 4; | |
4312 | ||
cc3e26be RS |
4313 | memcpy (splt->contents + h->plt.offset, |
4314 | plt_info->symbol_entry, | |
4315 | plt_info->size); | |
4316 | ||
4317 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got, | |
4318 | (sgot->output_section->vma | |
4319 | + sgot->output_offset | |
4320 | + got_offset)); | |
252b5132 RH |
4321 | |
4322 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
cc3e26be RS |
4323 | splt->contents |
4324 | + h->plt.offset | |
4325 | + plt_info->symbol_resolve_entry + 2); | |
4326 | ||
4327 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt, | |
4328 | splt->output_section->vma); | |
252b5132 RH |
4329 | |
4330 | /* Fill in the entry in the global offset table. */ | |
4331 | bfd_put_32 (output_bfd, | |
4332 | (splt->output_section->vma | |
4333 | + splt->output_offset | |
4334 | + h->plt.offset | |
cc3e26be | 4335 | + plt_info->symbol_resolve_entry), |
252b5132 RH |
4336 | sgot->contents + got_offset); |
4337 | ||
4338 | /* Fill in the entry in the .rela.plt section. */ | |
4339 | rela.r_offset = (sgot->output_section->vma | |
4340 | + sgot->output_offset | |
4341 | + got_offset); | |
4342 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
4343 | rela.r_addend = 0; | |
947216bf AM |
4344 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
4345 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 4346 | |
f5385ebf | 4347 | if (!h->def_regular) |
252b5132 RH |
4348 | { |
4349 | /* Mark the symbol as undefined, rather than as defined in | |
4350 | the .plt section. Leave the value alone. */ | |
4351 | sym->st_shndx = SHN_UNDEF; | |
4352 | } | |
4353 | } | |
4354 | ||
7fb9f789 | 4355 | if (elf_m68k_hash_entry (h)->glist != NULL) |
252b5132 RH |
4356 | { |
4357 | asection *sgot; | |
4358 | asection *srela; | |
7fb9f789 | 4359 | struct elf_m68k_got_entry *got_entry; |
252b5132 RH |
4360 | |
4361 | /* This symbol has an entry in the global offset table. Set it | |
4362 | up. */ | |
4363 | ||
3d4d4302 AM |
4364 | sgot = bfd_get_linker_section (dynobj, ".got"); |
4365 | srela = bfd_get_linker_section (dynobj, ".rela.got"); | |
252b5132 RH |
4366 | BFD_ASSERT (sgot != NULL && srela != NULL); |
4367 | ||
7fb9f789 NC |
4368 | got_entry = elf_m68k_hash_entry (h)->glist; |
4369 | ||
4370 | while (got_entry != NULL) | |
252b5132 | 4371 | { |
325e58c7 | 4372 | enum elf_m68k_reloc_type r_type; |
cf869cce NC |
4373 | bfd_vma got_entry_offset; |
4374 | ||
325e58c7 | 4375 | r_type = got_entry->key_.type; |
cf869cce | 4376 | got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1; |
7fb9f789 | 4377 | |
7fb9f789 NC |
4378 | /* If this is a -Bsymbolic link, and the symbol is defined |
4379 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4380 | the symbol was forced to be local because of a version file. | |
cf869cce | 4381 | The entry in the global offset table already have been |
7fb9f789 NC |
4382 | initialized in the relocate_section function. */ |
4383 | if (info->shared | |
2516a1ee | 4384 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7fb9f789 | 4385 | { |
325e58c7 | 4386 | bfd_vma relocation; |
cf869cce | 4387 | |
325e58c7 NC |
4388 | relocation = bfd_get_signed_32 (output_bfd, |
4389 | (sgot->contents | |
4390 | + got_entry_offset)); | |
4391 | ||
4392 | /* Undo TP bias. */ | |
4393 | switch (elf_m68k_reloc_got_type (r_type)) | |
cf869cce NC |
4394 | { |
4395 | case R_68K_GOT32O: | |
325e58c7 | 4396 | case R_68K_TLS_LDM32: |
cf869cce NC |
4397 | break; |
4398 | ||
4399 | case R_68K_TLS_GD32: | |
93b3ac75 AS |
4400 | /* The value for this relocation is actually put in |
4401 | the second GOT slot. */ | |
4402 | relocation = bfd_get_signed_32 (output_bfd, | |
4403 | (sgot->contents | |
4404 | + got_entry_offset + 4)); | |
325e58c7 | 4405 | relocation += dtpoff_base (info); |
cf869cce NC |
4406 | break; |
4407 | ||
4408 | case R_68K_TLS_IE32: | |
325e58c7 | 4409 | relocation += tpoff_base (info); |
cf869cce NC |
4410 | break; |
4411 | ||
4412 | default: | |
4413 | BFD_ASSERT (FALSE); | |
cf869cce NC |
4414 | } |
4415 | ||
325e58c7 NC |
4416 | elf_m68k_init_got_entry_local_shared (info, |
4417 | output_bfd, | |
4418 | r_type, | |
4419 | sgot, | |
4420 | got_entry_offset, | |
4421 | relocation, | |
4422 | srela); | |
7fb9f789 NC |
4423 | } |
4424 | else | |
4425 | { | |
325e58c7 NC |
4426 | Elf_Internal_Rela rela; |
4427 | ||
cf869cce NC |
4428 | /* Put zeros to GOT slots that will be initialized |
4429 | at run-time. */ | |
4430 | { | |
4431 | bfd_vma n_slots; | |
4432 | ||
4433 | n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type); | |
4434 | while (n_slots--) | |
4435 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
4436 | (sgot->contents + got_entry_offset | |
4437 | + 4 * n_slots)); | |
4438 | } | |
4439 | ||
7fb9f789 | 4440 | rela.r_addend = 0; |
325e58c7 NC |
4441 | rela.r_offset = (sgot->output_section->vma |
4442 | + sgot->output_offset | |
4443 | + got_entry_offset); | |
252b5132 | 4444 | |
325e58c7 | 4445 | switch (elf_m68k_reloc_got_type (r_type)) |
cf869cce NC |
4446 | { |
4447 | case R_68K_GOT32O: | |
4448 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); | |
4449 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4450 | break; | |
4451 | ||
4452 | case R_68K_TLS_GD32: | |
4453 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32); | |
4454 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4455 | ||
4456 | rela.r_offset += 4; | |
4457 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32); | |
4458 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4459 | break; | |
4460 | ||
4461 | case R_68K_TLS_IE32: | |
4462 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32); | |
4463 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4464 | break; | |
4465 | ||
4466 | default: | |
4467 | BFD_ASSERT (FALSE); | |
4468 | break; | |
4469 | } | |
4470 | } | |
7fb9f789 NC |
4471 | |
4472 | got_entry = got_entry->u.s2.next; | |
4473 | } | |
252b5132 RH |
4474 | } |
4475 | ||
f5385ebf | 4476 | if (h->needs_copy) |
252b5132 RH |
4477 | { |
4478 | asection *s; | |
4479 | Elf_Internal_Rela rela; | |
947216bf | 4480 | bfd_byte *loc; |
252b5132 RH |
4481 | |
4482 | /* This symbol needs a copy reloc. Set it up. */ | |
4483 | ||
4484 | BFD_ASSERT (h->dynindx != -1 | |
4485 | && (h->root.type == bfd_link_hash_defined | |
4486 | || h->root.type == bfd_link_hash_defweak)); | |
4487 | ||
3d4d4302 | 4488 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 RH |
4489 | BFD_ASSERT (s != NULL); |
4490 | ||
4491 | rela.r_offset = (h->root.u.def.value | |
4492 | + h->root.u.def.section->output_section->vma | |
4493 | + h->root.u.def.section->output_offset); | |
4494 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
4495 | rela.r_addend = 0; | |
947216bf AM |
4496 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
4497 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
4498 | } |
4499 | ||
b34976b6 | 4500 | return TRUE; |
252b5132 RH |
4501 | } |
4502 | ||
4503 | /* Finish up the dynamic sections. */ | |
4504 | ||
b34976b6 | 4505 | static bfd_boolean |
252b5132 RH |
4506 | elf_m68k_finish_dynamic_sections (output_bfd, info) |
4507 | bfd *output_bfd; | |
4508 | struct bfd_link_info *info; | |
4509 | { | |
4510 | bfd *dynobj; | |
4511 | asection *sgot; | |
4512 | asection *sdyn; | |
4513 | ||
4514 | dynobj = elf_hash_table (info)->dynobj; | |
4515 | ||
3d4d4302 | 4516 | sgot = bfd_get_linker_section (dynobj, ".got.plt"); |
252b5132 | 4517 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 4518 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
4519 | |
4520 | if (elf_hash_table (info)->dynamic_sections_created) | |
4521 | { | |
4522 | asection *splt; | |
4523 | Elf32_External_Dyn *dyncon, *dynconend; | |
4524 | ||
3d4d4302 | 4525 | splt = bfd_get_linker_section (dynobj, ".plt"); |
252b5132 RH |
4526 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4527 | ||
4528 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4529 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4530 | for (; dyncon < dynconend; dyncon++) |
4531 | { | |
4532 | Elf_Internal_Dyn dyn; | |
4533 | const char *name; | |
4534 | asection *s; | |
4535 | ||
4536 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4537 | ||
4538 | switch (dyn.d_tag) | |
4539 | { | |
4540 | default: | |
4541 | break; | |
4542 | ||
4543 | case DT_PLTGOT: | |
4544 | name = ".got"; | |
4545 | goto get_vma; | |
4546 | case DT_JMPREL: | |
4547 | name = ".rela.plt"; | |
4548 | get_vma: | |
4549 | s = bfd_get_section_by_name (output_bfd, name); | |
4550 | BFD_ASSERT (s != NULL); | |
4551 | dyn.d_un.d_ptr = s->vma; | |
4552 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4553 | break; | |
4554 | ||
4555 | case DT_PLTRELSZ: | |
4556 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4557 | BFD_ASSERT (s != NULL); | |
eea6121a | 4558 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4559 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4560 | break; | |
4561 | ||
4562 | case DT_RELASZ: | |
4563 | /* The procedure linkage table relocs (DT_JMPREL) should | |
4564 | not be included in the overall relocs (DT_RELA). | |
4565 | Therefore, we override the DT_RELASZ entry here to | |
4566 | make it not include the JMPREL relocs. Since the | |
4567 | linker script arranges for .rela.plt to follow all | |
4568 | other relocation sections, we don't have to worry | |
4569 | about changing the DT_RELA entry. */ | |
4570 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
4571 | if (s != NULL) | |
eea6121a | 4572 | dyn.d_un.d_val -= s->size; |
252b5132 RH |
4573 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4574 | break; | |
4575 | } | |
4576 | } | |
4577 | ||
4578 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 4579 | if (splt->size > 0) |
252b5132 | 4580 | { |
cc3e26be RS |
4581 | const struct elf_m68k_plt_info *plt_info; |
4582 | ||
4583 | plt_info = elf_m68k_hash_table (info)->plt_info; | |
4584 | memcpy (splt->contents, plt_info->plt0_entry, plt_info->size); | |
4585 | ||
4586 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4, | |
4587 | (sgot->output_section->vma | |
4588 | + sgot->output_offset | |
4589 | + 4)); | |
4590 | ||
4591 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8, | |
4592 | (sgot->output_section->vma | |
4593 | + sgot->output_offset | |
4594 | + 8)); | |
4595 | ||
4596 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
4597 | = plt_info->size; | |
252b5132 | 4598 | } |
252b5132 RH |
4599 | } |
4600 | ||
4601 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4602 | if (sgot->size > 0) |
252b5132 RH |
4603 | { |
4604 | if (sdyn == NULL) | |
4605 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4606 | else | |
4607 | bfd_put_32 (output_bfd, | |
4608 | sdyn->output_section->vma + sdyn->output_offset, | |
4609 | sgot->contents); | |
4610 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4611 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4612 | } | |
4613 | ||
4614 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4615 | ||
b34976b6 | 4616 | return TRUE; |
252b5132 RH |
4617 | } |
4618 | ||
0752970e NC |
4619 | /* Given a .data section and a .emreloc in-memory section, store |
4620 | relocation information into the .emreloc section which can be | |
4621 | used at runtime to relocate the section. This is called by the | |
4622 | linker when the --embedded-relocs switch is used. This is called | |
4623 | after the add_symbols entry point has been called for all the | |
4624 | objects, and before the final_link entry point is called. */ | |
4625 | ||
b34976b6 | 4626 | bfd_boolean |
0752970e NC |
4627 | bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
4628 | bfd *abfd; | |
4629 | struct bfd_link_info *info; | |
4630 | asection *datasec; | |
4631 | asection *relsec; | |
4632 | char **errmsg; | |
4633 | { | |
4634 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
4635 | Elf_Internal_Sym *isymbuf = NULL; |
4636 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
4637 | Elf_Internal_Rela *irel, *irelend; |
4638 | bfd_byte *p; | |
dc810e39 | 4639 | bfd_size_type amt; |
0752970e | 4640 | |
1049f94e | 4641 | BFD_ASSERT (! info->relocatable); |
0752970e NC |
4642 | |
4643 | *errmsg = NULL; | |
4644 | ||
4645 | if (datasec->reloc_count == 0) | |
b34976b6 | 4646 | return TRUE; |
0752970e NC |
4647 | |
4648 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 4649 | |
0752970e | 4650 | /* Get a copy of the native relocations. */ |
45d6a902 | 4651 | internal_relocs = (_bfd_elf_link_read_relocs |
0752970e NC |
4652 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
4653 | info->keep_memory)); | |
4654 | if (internal_relocs == NULL) | |
4655 | goto error_return; | |
0752970e | 4656 | |
dc810e39 AM |
4657 | amt = (bfd_size_type) datasec->reloc_count * 12; |
4658 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
4659 | if (relsec->contents == NULL) |
4660 | goto error_return; | |
4661 | ||
4662 | p = relsec->contents; | |
4663 | ||
4664 | irelend = internal_relocs + datasec->reloc_count; | |
4665 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
4666 | { | |
4667 | asection *targetsec; | |
4668 | ||
4669 | /* We are going to write a four byte longword into the runtime | |
4670 | reloc section. The longword will be the address in the data | |
4671 | section which must be relocated. It is followed by the name | |
4672 | of the target section NUL-padded or truncated to 8 | |
4673 | characters. */ | |
4674 | ||
4675 | /* We can only relocate absolute longword relocs at run time. */ | |
4676 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
4677 | { | |
4678 | *errmsg = _("unsupported reloc type"); | |
4679 | bfd_set_error (bfd_error_bad_value); | |
4680 | goto error_return; | |
4681 | } | |
4682 | ||
4683 | /* Get the target section referred to by the reloc. */ | |
4684 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
4685 | { | |
0752970e | 4686 | /* A local symbol. */ |
6cdc0ccc AM |
4687 | Elf_Internal_Sym *isym; |
4688 | ||
4689 | /* Read this BFD's local symbols if we haven't done so already. */ | |
4690 | if (isymbuf == NULL) | |
4691 | { | |
4692 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4693 | if (isymbuf == NULL) | |
4694 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
4695 | symtab_hdr->sh_info, 0, | |
4696 | NULL, NULL, NULL); | |
4697 | if (isymbuf == NULL) | |
4698 | goto error_return; | |
4699 | } | |
0752970e | 4700 | |
6cdc0ccc AM |
4701 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
4702 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
4703 | } |
4704 | else | |
4705 | { | |
4706 | unsigned long indx; | |
4707 | struct elf_link_hash_entry *h; | |
4708 | ||
4709 | /* An external symbol. */ | |
4710 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
4711 | h = elf_sym_hashes (abfd)[indx]; | |
4712 | BFD_ASSERT (h != NULL); | |
4713 | if (h->root.type == bfd_link_hash_defined | |
4714 | || h->root.type == bfd_link_hash_defweak) | |
4715 | targetsec = h->root.u.def.section; | |
4716 | else | |
4717 | targetsec = NULL; | |
4718 | } | |
4719 | ||
4720 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
4721 | memset (p + 4, 0, 8); | |
4722 | if (targetsec != NULL) | |
f075ee0c | 4723 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 4724 | } |
c3668558 | 4725 | |
6cdc0ccc AM |
4726 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
4727 | free (isymbuf); | |
4728 | if (internal_relocs != NULL | |
4729 | && elf_section_data (datasec)->relocs != internal_relocs) | |
4730 | free (internal_relocs); | |
b34976b6 | 4731 | return TRUE; |
0752970e NC |
4732 | |
4733 | error_return: | |
6cdc0ccc AM |
4734 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
4735 | free (isymbuf); | |
4736 | if (internal_relocs != NULL | |
4737 | && elf_section_data (datasec)->relocs != internal_relocs) | |
4738 | free (internal_relocs); | |
b34976b6 | 4739 | return FALSE; |
0752970e NC |
4740 | } |
4741 | ||
7fb9f789 NC |
4742 | /* Set target options. */ |
4743 | ||
4744 | void | |
4745 | bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling) | |
4746 | { | |
4747 | struct elf_m68k_link_hash_table *htab; | |
b1345da3 MR |
4748 | bfd_boolean use_neg_got_offsets_p; |
4749 | bfd_boolean allow_multigot_p; | |
4750 | bfd_boolean local_gp_p; | |
7fb9f789 NC |
4751 | |
4752 | switch (got_handling) | |
4753 | { | |
4754 | case 0: | |
4755 | /* --got=single. */ | |
b1345da3 MR |
4756 | local_gp_p = FALSE; |
4757 | use_neg_got_offsets_p = FALSE; | |
4758 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4759 | break; |
4760 | ||
4761 | case 1: | |
4762 | /* --got=negative. */ | |
b1345da3 MR |
4763 | local_gp_p = TRUE; |
4764 | use_neg_got_offsets_p = TRUE; | |
4765 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4766 | break; |
4767 | ||
4768 | case 2: | |
4769 | /* --got=multigot. */ | |
b1345da3 MR |
4770 | local_gp_p = TRUE; |
4771 | use_neg_got_offsets_p = TRUE; | |
4772 | allow_multigot_p = TRUE; | |
7fb9f789 NC |
4773 | break; |
4774 | ||
4775 | default: | |
4776 | BFD_ASSERT (FALSE); | |
b1345da3 MR |
4777 | return; |
4778 | } | |
4779 | ||
4780 | htab = elf_m68k_hash_table (info); | |
4781 | if (htab != NULL) | |
4782 | { | |
4783 | htab->local_gp_p = local_gp_p; | |
4784 | htab->use_neg_got_offsets_p = use_neg_got_offsets_p; | |
4785 | htab->allow_multigot_p = allow_multigot_p; | |
7fb9f789 NC |
4786 | } |
4787 | } | |
4788 | ||
aa91b392 | 4789 | static enum elf_reloc_type_class |
f51e552e AM |
4790 | elf32_m68k_reloc_type_class (rela) |
4791 | const Elf_Internal_Rela *rela; | |
aa91b392 | 4792 | { |
f51e552e | 4793 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
4794 | { |
4795 | case R_68K_RELATIVE: | |
4796 | return reloc_class_relative; | |
4797 | case R_68K_JMP_SLOT: | |
4798 | return reloc_class_plt; | |
4799 | case R_68K_COPY: | |
4800 | return reloc_class_copy; | |
4801 | default: | |
4802 | return reloc_class_normal; | |
4803 | } | |
4804 | } | |
4805 | ||
1715e0e3 AS |
4806 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4807 | or (bfd_vma) -1 if it should not be included. */ | |
4808 | ||
4809 | static bfd_vma | |
4810 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
4811 | const arelent *rel ATTRIBUTE_UNUSED) | |
4812 | { | |
cc3e26be | 4813 | return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size; |
1715e0e3 AS |
4814 | } |
4815 | ||
8bbeae90 AS |
4816 | /* Support for core dump NOTE sections. */ |
4817 | ||
4818 | static bfd_boolean | |
4819 | elf_m68k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
4820 | { | |
4821 | int offset; | |
4822 | size_t size; | |
4823 | ||
4824 | switch (note->descsz) | |
4825 | { | |
4826 | default: | |
4827 | return FALSE; | |
4828 | ||
4829 | case 154: /* Linux/m68k */ | |
4830 | /* pr_cursig */ | |
4831 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
4832 | ||
4833 | /* pr_pid */ | |
4834 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 22); | |
4835 | ||
4836 | /* pr_reg */ | |
4837 | offset = 70; | |
4838 | size = 80; | |
4839 | ||
4840 | break; | |
4841 | } | |
4842 | ||
4843 | /* Make a ".reg/999" section. */ | |
4844 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
4845 | size, note->descpos + offset); | |
4846 | } | |
4847 | ||
4848 | static bfd_boolean | |
4849 | elf_m68k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
4850 | { | |
4851 | switch (note->descsz) | |
4852 | { | |
4853 | default: | |
4854 | return FALSE; | |
4855 | ||
4856 | case 124: /* Linux/m68k elf_prpsinfo. */ | |
4857 | elf_tdata (abfd)->core_pid | |
4858 | = bfd_get_32 (abfd, note->descdata + 12); | |
4859 | elf_tdata (abfd)->core_program | |
4860 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
4861 | elf_tdata (abfd)->core_command | |
4862 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
4863 | } | |
4864 | ||
4865 | /* Note that for some reason, a spurious space is tacked | |
4866 | onto the end of the args in some (at least one anyway) | |
4867 | implementations, so strip it off if it exists. */ | |
4868 | { | |
4869 | char *command = elf_tdata (abfd)->core_command; | |
4870 | int n = strlen (command); | |
4871 | ||
4872 | if (n > 0 && command[n - 1] == ' ') | |
4873 | command[n - 1] = '\0'; | |
4874 | } | |
4875 | ||
4876 | return TRUE; | |
4877 | } | |
4878 | ||
252b5132 RH |
4879 | #define TARGET_BIG_SYM bfd_elf32_m68k_vec |
4880 | #define TARGET_BIG_NAME "elf32-m68k" | |
4881 | #define ELF_MACHINE_CODE EM_68K | |
4882 | #define ELF_MAXPAGESIZE 0x2000 | |
4883 | #define elf_backend_create_dynamic_sections \ | |
4884 | _bfd_elf_create_dynamic_sections | |
4885 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4886 | elf_m68k_link_hash_table_create | |
7fb9f789 NC |
4887 | /* ??? Should it be this macro or bfd_elfNN_bfd_link_hash_table_create? */ |
4888 | #define bfd_elf32_bfd_link_hash_table_free \ | |
4889 | elf_m68k_link_hash_table_free | |
4890 | #define bfd_elf32_bfd_final_link bfd_elf_final_link | |
252b5132 RH |
4891 | |
4892 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
cc3e26be RS |
4893 | #define elf_backend_always_size_sections \ |
4894 | elf_m68k_always_size_sections | |
252b5132 RH |
4895 | #define elf_backend_adjust_dynamic_symbol \ |
4896 | elf_m68k_adjust_dynamic_symbol | |
4897 | #define elf_backend_size_dynamic_sections \ | |
4898 | elf_m68k_size_dynamic_sections | |
fc9f1df9 | 4899 | #define elf_backend_final_write_processing elf_m68k_final_write_processing |
74541ad4 | 4900 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
252b5132 RH |
4901 | #define elf_backend_relocate_section elf_m68k_relocate_section |
4902 | #define elf_backend_finish_dynamic_symbol \ | |
4903 | elf_m68k_finish_dynamic_symbol | |
4904 | #define elf_backend_finish_dynamic_sections \ | |
4905 | elf_m68k_finish_dynamic_sections | |
4906 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
4907 | #define elf_backend_gc_sweep_hook elf_m68k_gc_sweep_hook | |
7fb9f789 | 4908 | #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol |
9e1281c7 CM |
4909 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
4910 | elf32_m68k_merge_private_bfd_data | |
4911 | #define bfd_elf32_bfd_set_private_flags \ | |
4912 | elf32_m68k_set_private_flags | |
4913 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
4914 | elf32_m68k_print_private_bfd_data | |
aa91b392 | 4915 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 4916 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 4917 | #define elf_backend_object_p elf32_m68k_object_p |
8bbeae90 AS |
4918 | #define elf_backend_grok_prstatus elf_m68k_grok_prstatus |
4919 | #define elf_backend_grok_psinfo elf_m68k_grok_psinfo | |
9e1281c7 | 4920 | |
252b5132 | 4921 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 4922 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4923 | #define elf_backend_want_got_plt 1 |
4924 | #define elf_backend_plt_readonly 1 | |
4925 | #define elf_backend_want_plt_sym 0 | |
4926 | #define elf_backend_got_header_size 12 | |
b491616a | 4927 | #define elf_backend_rela_normal 1 |
252b5132 RH |
4928 | |
4929 | #include "elf32-target.h" |