Commit | Line | Data |
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252b5132 | 1 | /* Motorola 68k series support for 32-bit ELF |
219d1afa | 2 | Copyright (C) 1993-2018 Free Software Foundation, Inc. |
252b5132 | 3 | |
ae9a127f | 4 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 5 | |
ae9a127f NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 9 | (at your option) any later version. |
252b5132 | 10 | |
ae9a127f NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
ae9a127f NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
252b5132 | 20 | |
252b5132 | 21 | #include "sysdep.h" |
3db64b00 | 22 | #include "bfd.h" |
252b5132 RH |
23 | #include "bfdlink.h" |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/m68k.h" | |
266abb8f | 27 | #include "opcode/m68k.h" |
252b5132 | 28 | |
2c3fc389 NC |
29 | static bfd_boolean |
30 | elf_m68k_discard_copies (struct elf_link_hash_entry *, void *); | |
31 | ||
32 | static reloc_howto_type howto_table[] = | |
33 | { | |
07d6d2b8 AM |
34 | HOWTO(R_68K_NONE, 0, 3, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE), |
35 | HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE), | |
36 | HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE), | |
37 | HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE), | |
38 | HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE), | |
39 | HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE), | |
40 | HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE), | |
41 | HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE), | |
42 | HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE), | |
43 | HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE), | |
44 | HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE), | |
45 | HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE), | |
46 | HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE), | |
47 | HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE), | |
48 | HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE), | |
49 | HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE), | |
50 | HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE), | |
51 | HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE), | |
52 | HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE), | |
53 | HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE), | |
54 | 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), | |
55 | 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), | |
56 | HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE), | |
ae9a127f | 57 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
58 | HOWTO (R_68K_GNU_VTINHERIT, /* type */ |
59 | 0, /* rightshift */ | |
60 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
61 | 0, /* bitsize */ | |
b34976b6 | 62 | FALSE, /* pc_relative */ |
252b5132 RH |
63 | 0, /* bitpos */ |
64 | complain_overflow_dont, /* complain_on_overflow */ | |
65 | NULL, /* special_function */ | |
66 | "R_68K_GNU_VTINHERIT", /* name */ | |
b34976b6 | 67 | FALSE, /* partial_inplace */ |
252b5132 RH |
68 | 0, /* src_mask */ |
69 | 0, /* dst_mask */ | |
b34976b6 | 70 | FALSE), |
ae9a127f | 71 | /* GNU extension to record C++ vtable member usage. */ |
252b5132 RH |
72 | HOWTO (R_68K_GNU_VTENTRY, /* type */ |
73 | 0, /* rightshift */ | |
74 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
75 | 0, /* bitsize */ | |
b34976b6 | 76 | FALSE, /* pc_relative */ |
252b5132 RH |
77 | 0, /* bitpos */ |
78 | complain_overflow_dont, /* complain_on_overflow */ | |
79 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
80 | "R_68K_GNU_VTENTRY", /* name */ | |
b34976b6 | 81 | FALSE, /* partial_inplace */ |
252b5132 RH |
82 | 0, /* src_mask */ |
83 | 0, /* dst_mask */ | |
b34976b6 | 84 | FALSE), |
cf869cce NC |
85 | |
86 | /* TLS general dynamic variable reference. */ | |
87 | HOWTO (R_68K_TLS_GD32, /* type */ | |
88 | 0, /* rightshift */ | |
89 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
90 | 32, /* bitsize */ | |
91 | FALSE, /* pc_relative */ | |
92 | 0, /* bitpos */ | |
93 | complain_overflow_bitfield, /* complain_on_overflow */ | |
94 | bfd_elf_generic_reloc, /* special_function */ | |
95 | "R_68K_TLS_GD32", /* name */ | |
96 | FALSE, /* partial_inplace */ | |
97 | 0, /* src_mask */ | |
98 | 0xffffffff, /* dst_mask */ | |
99 | FALSE), /* pcrel_offset */ | |
100 | ||
101 | HOWTO (R_68K_TLS_GD16, /* type */ | |
102 | 0, /* rightshift */ | |
103 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
104 | 16, /* bitsize */ | |
105 | FALSE, /* pc_relative */ | |
106 | 0, /* bitpos */ | |
107 | complain_overflow_signed, /* complain_on_overflow */ | |
108 | bfd_elf_generic_reloc, /* special_function */ | |
109 | "R_68K_TLS_GD16", /* name */ | |
110 | FALSE, /* partial_inplace */ | |
111 | 0, /* src_mask */ | |
112 | 0x0000ffff, /* dst_mask */ | |
113 | FALSE), /* pcrel_offset */ | |
114 | ||
115 | HOWTO (R_68K_TLS_GD8, /* type */ | |
116 | 0, /* rightshift */ | |
117 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
118 | 8, /* bitsize */ | |
119 | FALSE, /* pc_relative */ | |
120 | 0, /* bitpos */ | |
121 | complain_overflow_signed, /* complain_on_overflow */ | |
122 | bfd_elf_generic_reloc, /* special_function */ | |
123 | "R_68K_TLS_GD8", /* name */ | |
124 | FALSE, /* partial_inplace */ | |
125 | 0, /* src_mask */ | |
126 | 0x000000ff, /* dst_mask */ | |
127 | FALSE), /* pcrel_offset */ | |
128 | ||
129 | /* TLS local dynamic variable reference. */ | |
130 | HOWTO (R_68K_TLS_LDM32, /* type */ | |
131 | 0, /* rightshift */ | |
132 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
133 | 32, /* bitsize */ | |
134 | FALSE, /* pc_relative */ | |
135 | 0, /* bitpos */ | |
136 | complain_overflow_bitfield, /* complain_on_overflow */ | |
137 | bfd_elf_generic_reloc, /* special_function */ | |
138 | "R_68K_TLS_LDM32", /* name */ | |
139 | FALSE, /* partial_inplace */ | |
140 | 0, /* src_mask */ | |
141 | 0xffffffff, /* dst_mask */ | |
142 | FALSE), /* pcrel_offset */ | |
143 | ||
144 | HOWTO (R_68K_TLS_LDM16, /* type */ | |
145 | 0, /* rightshift */ | |
146 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
147 | 16, /* bitsize */ | |
148 | FALSE, /* pc_relative */ | |
149 | 0, /* bitpos */ | |
150 | complain_overflow_signed, /* complain_on_overflow */ | |
151 | bfd_elf_generic_reloc, /* special_function */ | |
152 | "R_68K_TLS_LDM16", /* name */ | |
153 | FALSE, /* partial_inplace */ | |
154 | 0, /* src_mask */ | |
155 | 0x0000ffff, /* dst_mask */ | |
156 | FALSE), /* pcrel_offset */ | |
157 | ||
158 | HOWTO (R_68K_TLS_LDM8, /* type */ | |
159 | 0, /* rightshift */ | |
160 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
161 | 8, /* bitsize */ | |
162 | FALSE, /* pc_relative */ | |
163 | 0, /* bitpos */ | |
164 | complain_overflow_signed, /* complain_on_overflow */ | |
165 | bfd_elf_generic_reloc, /* special_function */ | |
166 | "R_68K_TLS_LDM8", /* name */ | |
167 | FALSE, /* partial_inplace */ | |
168 | 0, /* src_mask */ | |
169 | 0x000000ff, /* dst_mask */ | |
170 | FALSE), /* pcrel_offset */ | |
171 | ||
172 | HOWTO (R_68K_TLS_LDO32, /* type */ | |
173 | 0, /* rightshift */ | |
174 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
175 | 32, /* bitsize */ | |
176 | FALSE, /* pc_relative */ | |
177 | 0, /* bitpos */ | |
178 | complain_overflow_bitfield, /* complain_on_overflow */ | |
179 | bfd_elf_generic_reloc, /* special_function */ | |
180 | "R_68K_TLS_LDO32", /* name */ | |
181 | FALSE, /* partial_inplace */ | |
182 | 0, /* src_mask */ | |
183 | 0xffffffff, /* dst_mask */ | |
184 | FALSE), /* pcrel_offset */ | |
185 | ||
186 | HOWTO (R_68K_TLS_LDO16, /* type */ | |
187 | 0, /* rightshift */ | |
188 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
189 | 16, /* bitsize */ | |
190 | FALSE, /* pc_relative */ | |
191 | 0, /* bitpos */ | |
192 | complain_overflow_signed, /* complain_on_overflow */ | |
193 | bfd_elf_generic_reloc, /* special_function */ | |
194 | "R_68K_TLS_LDO16", /* name */ | |
195 | FALSE, /* partial_inplace */ | |
196 | 0, /* src_mask */ | |
197 | 0x0000ffff, /* dst_mask */ | |
198 | FALSE), /* pcrel_offset */ | |
199 | ||
200 | HOWTO (R_68K_TLS_LDO8, /* type */ | |
201 | 0, /* rightshift */ | |
202 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
203 | 8, /* bitsize */ | |
204 | FALSE, /* pc_relative */ | |
205 | 0, /* bitpos */ | |
206 | complain_overflow_signed, /* complain_on_overflow */ | |
207 | bfd_elf_generic_reloc, /* special_function */ | |
208 | "R_68K_TLS_LDO8", /* name */ | |
209 | FALSE, /* partial_inplace */ | |
210 | 0, /* src_mask */ | |
211 | 0x000000ff, /* dst_mask */ | |
212 | FALSE), /* pcrel_offset */ | |
213 | ||
214 | /* TLS initial execution variable reference. */ | |
215 | HOWTO (R_68K_TLS_IE32, /* type */ | |
216 | 0, /* rightshift */ | |
217 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
218 | 32, /* bitsize */ | |
219 | FALSE, /* pc_relative */ | |
220 | 0, /* bitpos */ | |
221 | complain_overflow_bitfield, /* complain_on_overflow */ | |
222 | bfd_elf_generic_reloc, /* special_function */ | |
223 | "R_68K_TLS_IE32", /* name */ | |
224 | FALSE, /* partial_inplace */ | |
225 | 0, /* src_mask */ | |
226 | 0xffffffff, /* dst_mask */ | |
227 | FALSE), /* pcrel_offset */ | |
228 | ||
229 | HOWTO (R_68K_TLS_IE16, /* type */ | |
230 | 0, /* rightshift */ | |
231 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
232 | 16, /* bitsize */ | |
233 | FALSE, /* pc_relative */ | |
234 | 0, /* bitpos */ | |
235 | complain_overflow_signed, /* complain_on_overflow */ | |
236 | bfd_elf_generic_reloc, /* special_function */ | |
237 | "R_68K_TLS_IE16", /* name */ | |
238 | FALSE, /* partial_inplace */ | |
239 | 0, /* src_mask */ | |
240 | 0x0000ffff, /* dst_mask */ | |
241 | FALSE), /* pcrel_offset */ | |
242 | ||
243 | HOWTO (R_68K_TLS_IE8, /* type */ | |
244 | 0, /* rightshift */ | |
245 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
246 | 8, /* bitsize */ | |
247 | FALSE, /* pc_relative */ | |
248 | 0, /* bitpos */ | |
249 | complain_overflow_signed, /* complain_on_overflow */ | |
250 | bfd_elf_generic_reloc, /* special_function */ | |
251 | "R_68K_TLS_IE8", /* name */ | |
252 | FALSE, /* partial_inplace */ | |
253 | 0, /* src_mask */ | |
254 | 0x000000ff, /* dst_mask */ | |
255 | FALSE), /* pcrel_offset */ | |
256 | ||
257 | /* TLS local execution variable reference. */ | |
258 | HOWTO (R_68K_TLS_LE32, /* type */ | |
259 | 0, /* rightshift */ | |
260 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
261 | 32, /* bitsize */ | |
262 | FALSE, /* pc_relative */ | |
263 | 0, /* bitpos */ | |
264 | complain_overflow_bitfield, /* complain_on_overflow */ | |
265 | bfd_elf_generic_reloc, /* special_function */ | |
266 | "R_68K_TLS_LE32", /* name */ | |
267 | FALSE, /* partial_inplace */ | |
268 | 0, /* src_mask */ | |
269 | 0xffffffff, /* dst_mask */ | |
270 | FALSE), /* pcrel_offset */ | |
271 | ||
272 | HOWTO (R_68K_TLS_LE16, /* type */ | |
273 | 0, /* rightshift */ | |
274 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
275 | 16, /* bitsize */ | |
276 | FALSE, /* pc_relative */ | |
277 | 0, /* bitpos */ | |
278 | complain_overflow_signed, /* complain_on_overflow */ | |
279 | bfd_elf_generic_reloc, /* special_function */ | |
280 | "R_68K_TLS_LE16", /* name */ | |
281 | FALSE, /* partial_inplace */ | |
282 | 0, /* src_mask */ | |
283 | 0x0000ffff, /* dst_mask */ | |
284 | FALSE), /* pcrel_offset */ | |
285 | ||
286 | HOWTO (R_68K_TLS_LE8, /* type */ | |
287 | 0, /* rightshift */ | |
288 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
289 | 8, /* bitsize */ | |
290 | FALSE, /* pc_relative */ | |
291 | 0, /* bitpos */ | |
292 | complain_overflow_signed, /* complain_on_overflow */ | |
293 | bfd_elf_generic_reloc, /* special_function */ | |
294 | "R_68K_TLS_LE8", /* name */ | |
295 | FALSE, /* partial_inplace */ | |
296 | 0, /* src_mask */ | |
297 | 0x000000ff, /* dst_mask */ | |
298 | FALSE), /* pcrel_offset */ | |
299 | ||
300 | /* TLS GD/LD dynamic relocations. */ | |
301 | HOWTO (R_68K_TLS_DTPMOD32, /* type */ | |
302 | 0, /* rightshift */ | |
303 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
304 | 32, /* bitsize */ | |
305 | FALSE, /* pc_relative */ | |
306 | 0, /* bitpos */ | |
307 | complain_overflow_dont, /* complain_on_overflow */ | |
308 | bfd_elf_generic_reloc, /* special_function */ | |
309 | "R_68K_TLS_DTPMOD32", /* name */ | |
310 | FALSE, /* partial_inplace */ | |
311 | 0, /* src_mask */ | |
312 | 0xffffffff, /* dst_mask */ | |
313 | FALSE), /* pcrel_offset */ | |
314 | ||
315 | HOWTO (R_68K_TLS_DTPREL32, /* type */ | |
316 | 0, /* rightshift */ | |
317 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
318 | 32, /* bitsize */ | |
319 | FALSE, /* pc_relative */ | |
320 | 0, /* bitpos */ | |
321 | complain_overflow_dont, /* complain_on_overflow */ | |
322 | bfd_elf_generic_reloc, /* special_function */ | |
323 | "R_68K_TLS_DTPREL32", /* name */ | |
324 | FALSE, /* partial_inplace */ | |
325 | 0, /* src_mask */ | |
326 | 0xffffffff, /* dst_mask */ | |
327 | FALSE), /* pcrel_offset */ | |
328 | ||
329 | HOWTO (R_68K_TLS_TPREL32, /* type */ | |
330 | 0, /* rightshift */ | |
331 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
332 | 32, /* bitsize */ | |
333 | FALSE, /* pc_relative */ | |
334 | 0, /* bitpos */ | |
335 | complain_overflow_dont, /* complain_on_overflow */ | |
336 | bfd_elf_generic_reloc, /* special_function */ | |
337 | "R_68K_TLS_TPREL32", /* name */ | |
338 | FALSE, /* partial_inplace */ | |
339 | 0, /* src_mask */ | |
340 | 0xffffffff, /* dst_mask */ | |
341 | FALSE), /* pcrel_offset */ | |
252b5132 RH |
342 | }; |
343 | ||
f3185997 | 344 | static bfd_boolean |
c86ad514 | 345 | rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) |
252b5132 | 346 | { |
c86ad514 AS |
347 | unsigned int indx = ELF32_R_TYPE (dst->r_info); |
348 | ||
349 | if (indx >= (unsigned int) R_68K_max) | |
350 | { | |
695344c0 | 351 | /* xgettext:c-format */ |
0aa13fee AM |
352 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
353 | abfd, indx); | |
f3185997 NC |
354 | bfd_set_error (bfd_error_bad_value); |
355 | return FALSE; | |
c86ad514 AS |
356 | } |
357 | cache_ptr->howto = &howto_table[indx]; | |
f3185997 | 358 | return TRUE; |
252b5132 RH |
359 | } |
360 | ||
361 | #define elf_info_to_howto rtype_to_howto | |
362 | ||
363 | static const struct | |
364 | { | |
365 | bfd_reloc_code_real_type bfd_val; | |
366 | int elf_val; | |
cf869cce NC |
367 | } |
368 | reloc_map[] = | |
369 | { | |
252b5132 RH |
370 | { BFD_RELOC_NONE, R_68K_NONE }, |
371 | { BFD_RELOC_32, R_68K_32 }, | |
372 | { BFD_RELOC_16, R_68K_16 }, | |
373 | { BFD_RELOC_8, R_68K_8 }, | |
374 | { BFD_RELOC_32_PCREL, R_68K_PC32 }, | |
375 | { BFD_RELOC_16_PCREL, R_68K_PC16 }, | |
376 | { BFD_RELOC_8_PCREL, R_68K_PC8 }, | |
377 | { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, | |
378 | { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, | |
379 | { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, | |
380 | { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, | |
381 | { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, | |
382 | { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, | |
383 | { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, | |
384 | { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, | |
385 | { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, | |
386 | { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, | |
387 | { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, | |
388 | { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, | |
389 | { BFD_RELOC_NONE, R_68K_COPY }, | |
390 | { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, | |
391 | { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, | |
392 | { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, | |
393 | { BFD_RELOC_CTOR, R_68K_32 }, | |
394 | { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, | |
395 | { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, | |
cf869cce NC |
396 | { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 }, |
397 | { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 }, | |
398 | { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 }, | |
399 | { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 }, | |
400 | { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 }, | |
401 | { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 }, | |
402 | { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 }, | |
403 | { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 }, | |
404 | { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 }, | |
405 | { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 }, | |
406 | { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 }, | |
407 | { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 }, | |
408 | { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 }, | |
409 | { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 }, | |
410 | { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 }, | |
252b5132 RH |
411 | }; |
412 | ||
413 | static reloc_howto_type * | |
2c3fc389 NC |
414 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
415 | bfd_reloc_code_real_type code) | |
252b5132 RH |
416 | { |
417 | unsigned int i; | |
418 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
419 | { | |
420 | if (reloc_map[i].bfd_val == code) | |
421 | return &howto_table[reloc_map[i].elf_val]; | |
422 | } | |
423 | return 0; | |
424 | } | |
425 | ||
157090f7 AM |
426 | static reloc_howto_type * |
427 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
428 | { | |
429 | unsigned int i; | |
430 | ||
431 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
432 | if (howto_table[i].name != NULL | |
433 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
434 | return &howto_table[i]; | |
435 | ||
436 | return NULL; | |
437 | } | |
438 | ||
252b5132 | 439 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 440 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
252b5132 | 441 | #define ELF_ARCH bfd_arch_m68k |
ae95ffa6 | 442 | #define ELF_TARGET_ID M68K_ELF_DATA |
252b5132 RH |
443 | \f |
444 | /* Functions for the m68k ELF linker. */ | |
445 | ||
446 | /* The name of the dynamic interpreter. This is put in the .interp | |
447 | section. */ | |
448 | ||
449 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
450 | ||
cc3e26be RS |
451 | /* Describes one of the various PLT styles. */ |
452 | ||
453 | struct elf_m68k_plt_info | |
454 | { | |
455 | /* The size of each PLT entry. */ | |
456 | bfd_vma size; | |
457 | ||
458 | /* The template for the first PLT entry. */ | |
459 | const bfd_byte *plt0_entry; | |
460 | ||
461 | /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations. | |
462 | The comments by each member indicate the value that the relocation | |
463 | is against. */ | |
464 | struct { | |
465 | unsigned int got4; /* .got + 4 */ | |
466 | unsigned int got8; /* .got + 8 */ | |
467 | } plt0_relocs; | |
468 | ||
469 | /* The template for a symbol's PLT entry. */ | |
470 | const bfd_byte *symbol_entry; | |
471 | ||
472 | /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations. | |
473 | The comments by each member indicate the value that the relocation | |
474 | is against. */ | |
475 | struct { | |
476 | unsigned int got; /* the symbol's .got.plt entry */ | |
477 | unsigned int plt; /* .plt */ | |
478 | } symbol_relocs; | |
479 | ||
480 | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. | |
481 | The stub starts with "move.l #relocoffset,%d0". */ | |
482 | bfd_vma symbol_resolve_entry; | |
483 | }; | |
484 | ||
252b5132 RH |
485 | /* The size in bytes of an entry in the procedure linkage table. */ |
486 | ||
487 | #define PLT_ENTRY_SIZE 20 | |
488 | ||
489 | /* The first entry in a procedure linkage table looks like this. See | |
490 | the SVR4 ABI m68k supplement to see how this works. */ | |
491 | ||
492 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
493 | { | |
494 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
cc3e26be | 495 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
252b5132 | 496 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ |
cc3e26be | 497 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
252b5132 RH |
498 | 0, 0, 0, 0 /* pad out to 20 bytes. */ |
499 | }; | |
500 | ||
501 | /* Subsequent entries in a procedure linkage table look like this. */ | |
502 | ||
503 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
504 | { | |
505 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
cc3e26be | 506 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
252b5132 | 507 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 508 | 0, 0, 0, 0, /* + reloc index */ |
252b5132 | 509 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 510 | 0, 0, 0, 0 /* + .plt - . */ |
252b5132 RH |
511 | }; |
512 | ||
695344c0 NC |
513 | static const struct elf_m68k_plt_info elf_m68k_plt_info = |
514 | { | |
cc3e26be RS |
515 | PLT_ENTRY_SIZE, |
516 | elf_m68k_plt0_entry, { 4, 12 }, | |
517 | elf_m68k_plt_entry, { 4, 16 }, 8 | |
518 | }; | |
238d258f | 519 | |
7fb9f789 | 520 | #define ISAB_PLT_ENTRY_SIZE 24 |
238d258f | 521 | |
cc3e26be | 522 | static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 523 | { |
07d6d2b8 AM |
524 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
525 | 0, 0, 0, 0, /* + (.got + 4) - . */ | |
cc3e26be | 526 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */ |
07d6d2b8 AM |
527 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
528 | 0, 0, 0, 0, /* + (.got + 8) - . */ | |
cc3e26be | 529 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ |
07d6d2b8 | 530 | 0x4e, 0xd0, /* jmp (%a0) */ |
238d258f NC |
531 | 0x4e, 0x71 /* nop */ |
532 | }; | |
533 | ||
534 | /* Subsequent entries in a procedure linkage table look like this. */ | |
535 | ||
cc3e26be | 536 | static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 537 | { |
07d6d2b8 AM |
538 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
539 | 0, 0, 0, 0, /* + (.got.plt entry) - . */ | |
cc3e26be | 540 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ |
07d6d2b8 AM |
541 | 0x4e, 0xd0, /* jmp (%a0) */ |
542 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
543 | 0, 0, 0, 0, /* + reloc index */ | |
544 | 0x60, 0xff, /* bra.l .plt */ | |
545 | 0, 0, 0, 0 /* + .plt - . */ | |
238d258f NC |
546 | }; |
547 | ||
695344c0 NC |
548 | static const struct elf_m68k_plt_info elf_isab_plt_info = |
549 | { | |
cc3e26be RS |
550 | ISAB_PLT_ENTRY_SIZE, |
551 | elf_isab_plt0_entry, { 2, 12 }, | |
552 | elf_isab_plt_entry, { 2, 20 }, 12 | |
553 | }; | |
9e1281c7 | 554 | |
7fb9f789 | 555 | #define ISAC_PLT_ENTRY_SIZE 24 |
9a2e615a NS |
556 | |
557 | static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] = | |
558 | { | |
559 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
560 | 0, 0, 0, 0, /* replaced with .got + 4 - . */ | |
561 | 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */ | |
562 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
563 | 0, 0, 0, 0, /* replaced with .got + 8 - . */ | |
564 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
565 | 0x4e, 0xd0, /* jmp (%a0) */ | |
566 | 0x4e, 0x71 /* nop */ | |
567 | }; | |
568 | ||
569 | /* Subsequent entries in a procedure linkage table look like this. */ | |
570 | ||
571 | static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] = | |
572 | { | |
573 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
574 | 0, 0, 0, 0, /* replaced with (.got entry) - . */ | |
575 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
576 | 0x4e, 0xd0, /* jmp (%a0) */ | |
577 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
578 | 0, 0, 0, 0, /* replaced with offset into relocation table */ | |
579 | 0x61, 0xff, /* bsr.l .plt */ | |
07d6d2b8 | 580 | 0, 0, 0, 0 /* replaced with .plt - . */ |
9a2e615a NS |
581 | }; |
582 | ||
695344c0 NC |
583 | static const struct elf_m68k_plt_info elf_isac_plt_info = |
584 | { | |
9a2e615a NS |
585 | ISAC_PLT_ENTRY_SIZE, |
586 | elf_isac_plt0_entry, { 2, 12}, | |
587 | elf_isac_plt_entry, { 2, 20 }, 12 | |
588 | }; | |
589 | ||
cc3e26be | 590 | #define CPU32_PLT_ENTRY_SIZE 24 |
9e1281c7 | 591 | /* Procedure linkage table entries for the cpu32 */ |
cc3e26be | 592 | static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 593 | { |
6091b433 | 594 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
07d6d2b8 | 595 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
6091b433 | 596 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
07d6d2b8 AM |
597 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
598 | 0x4e, 0xd1, /* jmp %a1@ */ | |
599 | 0, 0, 0, 0, /* pad out to 24 bytes. */ | |
9e1281c7 CM |
600 | 0, 0 |
601 | }; | |
602 | ||
cc3e26be | 603 | static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 604 | { |
1ca42bad | 605 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
07d6d2b8 AM |
606 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
607 | 0x4e, 0xd1, /* jmp %a1@ */ | |
608 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
609 | 0, 0, 0, 0, /* + reloc index */ | |
610 | 0x60, 0xff, /* bra.l .plt */ | |
611 | 0, 0, 0, 0, /* + .plt - . */ | |
9e1281c7 CM |
612 | 0, 0 |
613 | }; | |
614 | ||
695344c0 NC |
615 | static const struct elf_m68k_plt_info elf_cpu32_plt_info = |
616 | { | |
cc3e26be RS |
617 | CPU32_PLT_ENTRY_SIZE, |
618 | elf_cpu32_plt0_entry, { 4, 12 }, | |
619 | elf_cpu32_plt_entry, { 4, 18 }, 10 | |
620 | }; | |
621 | ||
252b5132 RH |
622 | /* The m68k linker needs to keep track of the number of relocs that it |
623 | decides to copy in check_relocs for each symbol. This is so that it | |
624 | can discard PC relative relocs if it doesn't need them when linking | |
625 | with -Bsymbolic. We store the information in a field extending the | |
626 | regular ELF linker hash table. */ | |
627 | ||
628 | /* This structure keeps track of the number of PC relative relocs we have | |
629 | copied for a given symbol. */ | |
630 | ||
631 | struct elf_m68k_pcrel_relocs_copied | |
632 | { | |
633 | /* Next section. */ | |
634 | struct elf_m68k_pcrel_relocs_copied *next; | |
635 | /* A section in dynobj. */ | |
636 | asection *section; | |
637 | /* Number of relocs copied in this section. */ | |
638 | bfd_size_type count; | |
639 | }; | |
640 | ||
7fb9f789 NC |
641 | /* Forward declaration. */ |
642 | struct elf_m68k_got_entry; | |
643 | ||
252b5132 RH |
644 | /* m68k ELF linker hash entry. */ |
645 | ||
646 | struct elf_m68k_link_hash_entry | |
647 | { | |
648 | struct elf_link_hash_entry root; | |
649 | ||
650 | /* Number of PC relative relocs copied for this symbol. */ | |
651 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
7fb9f789 NC |
652 | |
653 | /* Key to got_entries. */ | |
654 | unsigned long got_entry_key; | |
655 | ||
656 | /* List of GOT entries for this symbol. This list is build during | |
657 | offset finalization and is used within elf_m68k_finish_dynamic_symbol | |
658 | to traverse all GOT entries for a particular symbol. | |
659 | ||
660 | ??? We could've used root.got.glist field instead, but having | |
661 | a separate field is cleaner. */ | |
662 | struct elf_m68k_got_entry *glist; | |
252b5132 RH |
663 | }; |
664 | ||
0cca5f05 AS |
665 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
666 | ||
7fb9f789 NC |
667 | /* Key part of GOT entry in hashtable. */ |
668 | struct elf_m68k_got_entry_key | |
669 | { | |
670 | /* BFD in which this symbol was defined. NULL for global symbols. */ | |
671 | const bfd *bfd; | |
672 | ||
673 | /* Symbol index. Either local symbol index or h->got_entry_key. */ | |
674 | unsigned long symndx; | |
cf869cce NC |
675 | |
676 | /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32}, | |
677 | R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}. | |
678 | ||
679 | From perspective of hashtable key, only elf_m68k_got_reloc_type (type) | |
680 | matters. That is, we distinguish between, say, R_68K_GOT16O | |
681 | and R_68K_GOT32O when allocating offsets, but they are considered to be | |
682 | the same when searching got->entries. */ | |
683 | enum elf_m68k_reloc_type type; | |
7fb9f789 NC |
684 | }; |
685 | ||
cf869cce NC |
686 | /* Size of the GOT offset suitable for relocation. */ |
687 | enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST }; | |
688 | ||
7fb9f789 NC |
689 | /* Entry of the GOT. */ |
690 | struct elf_m68k_got_entry | |
691 | { | |
692 | /* GOT entries are put into a got->entries hashtable. This is the key. */ | |
693 | struct elf_m68k_got_entry_key key_; | |
694 | ||
695 | /* GOT entry data. We need s1 before offset finalization and s2 after. */ | |
696 | union | |
697 | { | |
698 | struct | |
699 | { | |
5c3261b0 | 700 | /* Number of times this entry is referenced. */ |
7fb9f789 | 701 | bfd_vma refcount; |
7fb9f789 NC |
702 | } s1; |
703 | ||
704 | struct | |
705 | { | |
706 | /* Offset from the start of .got section. To calculate offset relative | |
de194d85 | 707 | to GOT pointer one should subtract got->offset from this value. */ |
7fb9f789 NC |
708 | bfd_vma offset; |
709 | ||
710 | /* Pointer to the next GOT entry for this global symbol. | |
711 | Symbols have at most one entry in one GOT, but might | |
712 | have entries in more than one GOT. | |
713 | Root of this list is h->glist. | |
714 | NULL for local symbols. */ | |
715 | struct elf_m68k_got_entry *next; | |
716 | } s2; | |
717 | } u; | |
718 | }; | |
719 | ||
cf869cce NC |
720 | /* Return representative type for relocation R_TYPE. |
721 | This is used to avoid enumerating many relocations in comparisons, | |
722 | switches etc. */ | |
723 | ||
724 | static enum elf_m68k_reloc_type | |
725 | elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type) | |
726 | { | |
727 | switch (r_type) | |
728 | { | |
729 | /* In most cases R_68K_GOTx relocations require the very same | |
730 | handling as R_68K_GOT32O relocation. In cases when we need | |
731 | to distinguish between the two, we use explicitly compare against | |
732 | r_type. */ | |
733 | case R_68K_GOT32: | |
734 | case R_68K_GOT16: | |
735 | case R_68K_GOT8: | |
736 | case R_68K_GOT32O: | |
737 | case R_68K_GOT16O: | |
738 | case R_68K_GOT8O: | |
739 | return R_68K_GOT32O; | |
740 | ||
741 | case R_68K_TLS_GD32: | |
742 | case R_68K_TLS_GD16: | |
743 | case R_68K_TLS_GD8: | |
744 | return R_68K_TLS_GD32; | |
745 | ||
746 | case R_68K_TLS_LDM32: | |
747 | case R_68K_TLS_LDM16: | |
748 | case R_68K_TLS_LDM8: | |
749 | return R_68K_TLS_LDM32; | |
750 | ||
751 | case R_68K_TLS_IE32: | |
752 | case R_68K_TLS_IE16: | |
753 | case R_68K_TLS_IE8: | |
754 | return R_68K_TLS_IE32; | |
755 | ||
756 | default: | |
757 | BFD_ASSERT (FALSE); | |
758 | return 0; | |
759 | } | |
760 | } | |
761 | ||
762 | /* Return size of the GOT entry offset for relocation R_TYPE. */ | |
763 | ||
764 | static enum elf_m68k_got_offset_size | |
765 | elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type) | |
766 | { | |
767 | switch (r_type) | |
768 | { | |
769 | case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8: | |
770 | case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32: | |
771 | case R_68K_TLS_IE32: | |
772 | return R_32; | |
773 | ||
774 | case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16: | |
775 | case R_68K_TLS_IE16: | |
776 | return R_16; | |
777 | ||
778 | case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8: | |
779 | case R_68K_TLS_IE8: | |
780 | return R_8; | |
781 | ||
782 | default: | |
783 | BFD_ASSERT (FALSE); | |
784 | return 0; | |
785 | } | |
786 | } | |
787 | ||
788 | /* Return number of GOT entries we need to allocate in GOT for | |
789 | relocation R_TYPE. */ | |
790 | ||
791 | static bfd_vma | |
792 | elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type) | |
793 | { | |
794 | switch (elf_m68k_reloc_got_type (r_type)) | |
795 | { | |
796 | case R_68K_GOT32O: | |
797 | case R_68K_TLS_IE32: | |
798 | return 1; | |
799 | ||
800 | case R_68K_TLS_GD32: | |
801 | case R_68K_TLS_LDM32: | |
802 | return 2; | |
803 | ||
804 | default: | |
805 | BFD_ASSERT (FALSE); | |
806 | return 0; | |
807 | } | |
808 | } | |
809 | ||
810 | /* Return TRUE if relocation R_TYPE is a TLS one. */ | |
811 | ||
812 | static bfd_boolean | |
813 | elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type) | |
814 | { | |
815 | switch (r_type) | |
816 | { | |
817 | case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8: | |
818 | case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8: | |
819 | case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8: | |
820 | case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8: | |
821 | case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8: | |
822 | case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32: | |
823 | return TRUE; | |
824 | ||
825 | default: | |
826 | return FALSE; | |
827 | } | |
828 | } | |
829 | ||
7fb9f789 NC |
830 | /* Data structure representing a single GOT. */ |
831 | struct elf_m68k_got | |
832 | { | |
833 | /* Hashtable of 'struct elf_m68k_got_entry's. | |
834 | Starting size of this table is the maximum number of | |
835 | R_68K_GOT8O entries. */ | |
836 | htab_t entries; | |
837 | ||
cf869cce NC |
838 | /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require |
839 | several GOT slots. | |
7fb9f789 | 840 | |
cf869cce NC |
841 | n_slots[R_8] is the count of R_8 slots in this GOT. |
842 | n_slots[R_16] is the cumulative count of R_8 and R_16 slots | |
843 | in this GOT. | |
844 | n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots | |
845 | in this GOT. This is the total number of slots. */ | |
846 | bfd_vma n_slots[R_LAST]; | |
7fb9f789 | 847 | |
cf869cce | 848 | /* Number of local (entry->key_.h == NULL) slots in this GOT. |
7fb9f789 NC |
849 | This is only used to properly calculate size of .rela.got section; |
850 | see elf_m68k_partition_multi_got. */ | |
cf869cce | 851 | bfd_vma local_n_slots; |
7fb9f789 NC |
852 | |
853 | /* Offset of this GOT relative to beginning of .got section. */ | |
854 | bfd_vma offset; | |
855 | }; | |
856 | ||
857 | /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */ | |
858 | struct elf_m68k_bfd2got_entry | |
859 | { | |
860 | /* BFD. */ | |
861 | const bfd *bfd; | |
862 | ||
863 | /* Assigned GOT. Before partitioning multi-GOT each BFD has its own | |
864 | GOT structure. After partitioning several BFD's might [and often do] | |
865 | share a single GOT. */ | |
866 | struct elf_m68k_got *got; | |
867 | }; | |
868 | ||
869 | /* The main data structure holding all the pieces. */ | |
870 | struct elf_m68k_multi_got | |
871 | { | |
872 | /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry | |
873 | here, then it doesn't need a GOT (this includes the case of a BFD | |
874 | having an empty GOT). | |
875 | ||
876 | ??? This hashtable can be replaced by an array indexed by bfd->id. */ | |
877 | htab_t bfd2got; | |
878 | ||
879 | /* Next symndx to assign a global symbol. | |
880 | h->got_entry_key is initialized from this counter. */ | |
881 | unsigned long global_symndx; | |
882 | }; | |
883 | ||
252b5132 RH |
884 | /* m68k ELF linker hash table. */ |
885 | ||
886 | struct elf_m68k_link_hash_table | |
887 | { | |
888 | struct elf_link_hash_table root; | |
b6152c34 | 889 | |
87d72d41 AM |
890 | /* Small local sym cache. */ |
891 | struct sym_cache sym_cache; | |
cc3e26be RS |
892 | |
893 | /* The PLT format used by this link, or NULL if the format has not | |
894 | yet been chosen. */ | |
895 | const struct elf_m68k_plt_info *plt_info; | |
7fb9f789 NC |
896 | |
897 | /* True, if GP is loaded within each function which uses it. | |
898 | Set to TRUE when GOT negative offsets or multi-GOT is enabled. */ | |
899 | bfd_boolean local_gp_p; | |
900 | ||
901 | /* Switch controlling use of negative offsets to double the size of GOTs. */ | |
902 | bfd_boolean use_neg_got_offsets_p; | |
903 | ||
904 | /* Switch controlling generation of multiple GOTs. */ | |
905 | bfd_boolean allow_multigot_p; | |
906 | ||
907 | /* Multi-GOT data structure. */ | |
908 | struct elf_m68k_multi_got multi_got_; | |
252b5132 RH |
909 | }; |
910 | ||
252b5132 RH |
911 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
912 | ||
913 | #define elf_m68k_hash_table(p) \ | |
4dfe6ac6 NC |
914 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
915 | == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 916 | |
7fb9f789 NC |
917 | /* Shortcut to multi-GOT data. */ |
918 | #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_) | |
919 | ||
252b5132 RH |
920 | /* Create an entry in an m68k ELF linker hash table. */ |
921 | ||
922 | static struct bfd_hash_entry * | |
4dfe6ac6 NC |
923 | elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry, |
924 | struct bfd_hash_table *table, | |
925 | const char *string) | |
252b5132 | 926 | { |
0cca5f05 | 927 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
928 | |
929 | /* Allocate the structure if it has not already been allocated by a | |
930 | subclass. */ | |
0cca5f05 AS |
931 | if (ret == NULL) |
932 | ret = bfd_hash_allocate (table, | |
933 | sizeof (struct elf_m68k_link_hash_entry)); | |
934 | if (ret == NULL) | |
935 | return ret; | |
252b5132 RH |
936 | |
937 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
938 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
939 | if (ret != NULL) | |
7fb9f789 NC |
940 | { |
941 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
942 | elf_m68k_hash_entry (ret)->got_entry_key = 0; | |
943 | elf_m68k_hash_entry (ret)->glist = NULL; | |
944 | } | |
252b5132 | 945 | |
0cca5f05 | 946 | return ret; |
252b5132 RH |
947 | } |
948 | ||
68faa637 AM |
949 | /* Destroy an m68k ELF linker hash table. */ |
950 | ||
951 | static void | |
d495ab0d | 952 | elf_m68k_link_hash_table_free (bfd *obfd) |
68faa637 AM |
953 | { |
954 | struct elf_m68k_link_hash_table *htab; | |
955 | ||
d495ab0d | 956 | htab = (struct elf_m68k_link_hash_table *) obfd->link.hash; |
68faa637 AM |
957 | |
958 | if (htab->multi_got_.bfd2got != NULL) | |
959 | { | |
960 | htab_delete (htab->multi_got_.bfd2got); | |
961 | htab->multi_got_.bfd2got = NULL; | |
962 | } | |
d495ab0d | 963 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
964 | } |
965 | ||
252b5132 RH |
966 | /* Create an m68k ELF linker hash table. */ |
967 | ||
968 | static struct bfd_link_hash_table * | |
4dfe6ac6 | 969 | elf_m68k_link_hash_table_create (bfd *abfd) |
252b5132 RH |
970 | { |
971 | struct elf_m68k_link_hash_table *ret; | |
dc810e39 | 972 | bfd_size_type amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 973 | |
7bf52ea2 | 974 | ret = (struct elf_m68k_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
975 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
976 | return NULL; | |
977 | ||
66eb6687 AM |
978 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
979 | elf_m68k_link_hash_newfunc, | |
4dfe6ac6 NC |
980 | sizeof (struct elf_m68k_link_hash_entry), |
981 | M68K_ELF_DATA)) | |
252b5132 | 982 | { |
e2d34d7d | 983 | free (ret); |
252b5132 RH |
984 | return NULL; |
985 | } | |
d495ab0d | 986 | ret->root.root.hash_table_free = elf_m68k_link_hash_table_free; |
252b5132 | 987 | |
7fb9f789 | 988 | ret->multi_got_.global_symndx = 1; |
b6152c34 | 989 | |
252b5132 RH |
990 | return &ret->root.root; |
991 | } | |
992 | ||
266abb8f NS |
993 | /* Set the right machine number. */ |
994 | ||
995 | static bfd_boolean | |
996 | elf32_m68k_object_p (bfd *abfd) | |
997 | { | |
998 | unsigned int mach = 0; | |
999 | unsigned features = 0; | |
1000 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
1001 | ||
425c6cb0 | 1002 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) |
266abb8f | 1003 | features |= m68000; |
425c6cb0 | 1004 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) |
3bdcfdf4 KH |
1005 | features |= cpu32; |
1006 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1007 | features |= fido_a; | |
425c6cb0 | 1008 | else |
266abb8f | 1009 | { |
c694fd50 | 1010 | switch (eflags & EF_M68K_CF_ISA_MASK) |
266abb8f | 1011 | { |
c694fd50 | 1012 | case EF_M68K_CF_ISA_A_NODIV: |
266abb8f NS |
1013 | features |= mcfisa_a; |
1014 | break; | |
c694fd50 | 1015 | case EF_M68K_CF_ISA_A: |
0b2e31dc NS |
1016 | features |= mcfisa_a|mcfhwdiv; |
1017 | break; | |
c694fd50 | 1018 | case EF_M68K_CF_ISA_A_PLUS: |
0b2e31dc NS |
1019 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; |
1020 | break; | |
c694fd50 | 1021 | case EF_M68K_CF_ISA_B_NOUSP: |
0b2e31dc NS |
1022 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; |
1023 | break; | |
c694fd50 | 1024 | case EF_M68K_CF_ISA_B: |
0b2e31dc NS |
1025 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; |
1026 | break; | |
9a2e615a NS |
1027 | case EF_M68K_CF_ISA_C: |
1028 | features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp; | |
1029 | break; | |
8d100c32 KH |
1030 | case EF_M68K_CF_ISA_C_NODIV: |
1031 | features |= mcfisa_a|mcfisa_c|mcfusp; | |
1032 | break; | |
266abb8f | 1033 | } |
c694fd50 | 1034 | switch (eflags & EF_M68K_CF_MAC_MASK) |
266abb8f | 1035 | { |
c694fd50 | 1036 | case EF_M68K_CF_MAC: |
266abb8f NS |
1037 | features |= mcfmac; |
1038 | break; | |
c694fd50 | 1039 | case EF_M68K_CF_EMAC: |
266abb8f NS |
1040 | features |= mcfemac; |
1041 | break; | |
1042 | } | |
c694fd50 | 1043 | if (eflags & EF_M68K_CF_FLOAT) |
266abb8f NS |
1044 | features |= cfloat; |
1045 | } | |
1046 | ||
1047 | mach = bfd_m68k_features_to_mach (features); | |
1048 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
1049 | ||
1050 | return TRUE; | |
1051 | } | |
1052 | ||
fc9f1df9 NC |
1053 | /* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag |
1054 | field based on the machine number. */ | |
1055 | ||
1056 | static void | |
1057 | elf_m68k_final_write_processing (bfd *abfd, | |
1058 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
1059 | { | |
1060 | int mach = bfd_get_mach (abfd); | |
1061 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; | |
1062 | ||
1063 | if (!e_flags) | |
1064 | { | |
1065 | unsigned int arch_mask; | |
1066 | ||
1067 | arch_mask = bfd_m68k_mach_to_features (mach); | |
1068 | ||
1069 | if (arch_mask & m68000) | |
1070 | e_flags = EF_M68K_M68000; | |
1071 | else if (arch_mask & cpu32) | |
1072 | e_flags = EF_M68K_CPU32; | |
1073 | else if (arch_mask & fido_a) | |
1074 | e_flags = EF_M68K_FIDO; | |
1075 | else | |
1076 | { | |
1077 | switch (arch_mask | |
1078 | & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp)) | |
1079 | { | |
1080 | case mcfisa_a: | |
1081 | e_flags |= EF_M68K_CF_ISA_A_NODIV; | |
1082 | break; | |
1083 | case mcfisa_a | mcfhwdiv: | |
1084 | e_flags |= EF_M68K_CF_ISA_A; | |
1085 | break; | |
1086 | case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp: | |
1087 | e_flags |= EF_M68K_CF_ISA_A_PLUS; | |
1088 | break; | |
1089 | case mcfisa_a | mcfisa_b | mcfhwdiv: | |
1090 | e_flags |= EF_M68K_CF_ISA_B_NOUSP; | |
1091 | break; | |
1092 | case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp: | |
1093 | e_flags |= EF_M68K_CF_ISA_B; | |
1094 | break; | |
1095 | case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp: | |
1096 | e_flags |= EF_M68K_CF_ISA_C; | |
1097 | break; | |
1098 | case mcfisa_a | mcfisa_c | mcfusp: | |
1099 | e_flags |= EF_M68K_CF_ISA_C_NODIV; | |
1100 | break; | |
1101 | } | |
1102 | if (arch_mask & mcfmac) | |
1103 | e_flags |= EF_M68K_CF_MAC; | |
1104 | else if (arch_mask & mcfemac) | |
1105 | e_flags |= EF_M68K_CF_EMAC; | |
1106 | if (arch_mask & cfloat) | |
1107 | e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E; | |
1108 | } | |
1109 | elf_elfheader (abfd)->e_flags = e_flags; | |
1110 | } | |
1111 | } | |
1112 | ||
ae9a127f | 1113 | /* Keep m68k-specific flags in the ELF header. */ |
fc9f1df9 | 1114 | |
b34976b6 | 1115 | static bfd_boolean |
2c3fc389 | 1116 | elf32_m68k_set_private_flags (bfd *abfd, flagword flags) |
9e1281c7 CM |
1117 | { |
1118 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
1119 | elf_flags_init (abfd) = TRUE; |
1120 | return TRUE; | |
9e1281c7 CM |
1121 | } |
1122 | ||
9e1281c7 CM |
1123 | /* Merge backend specific data from an object file to the output |
1124 | object file when linking. */ | |
b34976b6 | 1125 | static bfd_boolean |
50e03d47 | 1126 | elf32_m68k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
9e1281c7 | 1127 | { |
50e03d47 | 1128 | bfd *obfd = info->output_bfd; |
9e1281c7 CM |
1129 | flagword out_flags; |
1130 | flagword in_flags; | |
a9d34880 RS |
1131 | flagword out_isa; |
1132 | flagword in_isa; | |
1133 | const bfd_arch_info_type *arch_info; | |
7fb9f789 | 1134 | |
9e1281c7 CM |
1135 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
1136 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
266abb8f NS |
1137 | return FALSE; |
1138 | ||
a9d34880 RS |
1139 | /* Get the merged machine. This checks for incompatibility between |
1140 | Coldfire & non-Coldfire flags, incompability between different | |
1141 | Coldfire ISAs, and incompability between different MAC types. */ | |
1142 | arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); | |
1143 | if (!arch_info) | |
1144 | return FALSE; | |
9e1281c7 | 1145 | |
7fb9f789 NC |
1146 | bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); |
1147 | ||
1148 | in_flags = elf_elfheader (ibfd)->e_flags; | |
1149 | if (!elf_flags_init (obfd)) | |
1150 | { | |
1151 | elf_flags_init (obfd) = TRUE; | |
1152 | out_flags = in_flags; | |
1153 | } | |
1154 | else | |
1155 | { | |
1156 | out_flags = elf_elfheader (obfd)->e_flags; | |
1157 | unsigned int variant_mask; | |
1158 | ||
1159 | if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1160 | variant_mask = 0; | |
1161 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1162 | variant_mask = 0; | |
1163 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1164 | variant_mask = 0; | |
1165 | else | |
1166 | variant_mask = EF_M68K_CF_ISA_MASK; | |
1167 | ||
1168 | in_isa = (in_flags & variant_mask); | |
1169 | out_isa = (out_flags & variant_mask); | |
1170 | if (in_isa > out_isa) | |
1171 | out_flags ^= in_isa ^ out_isa; | |
1172 | if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32 | |
1173 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1174 | || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO | |
1175 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)) | |
1176 | out_flags = EF_M68K_FIDO; | |
1177 | else | |
1178 | out_flags |= in_flags ^ in_isa; | |
1179 | } | |
1180 | elf_elfheader (obfd)->e_flags = out_flags; | |
1181 | ||
1182 | return TRUE; | |
1183 | } | |
1184 | ||
1185 | /* Display the flags field. */ | |
1186 | ||
1187 | static bfd_boolean | |
1188 | elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr) | |
1189 | { | |
1190 | FILE *file = (FILE *) ptr; | |
1191 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
1192 | ||
1193 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1194 | ||
1195 | /* Print normal ELF private data. */ | |
1196 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1197 | ||
1198 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
1199 | ||
1200 | /* xgettext:c-format */ | |
1201 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
1202 | ||
1203 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1204 | fprintf (file, " [m68000]"); | |
1205 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1206 | fprintf (file, " [cpu32]"); | |
1207 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1208 | fprintf (file, " [fido]"); | |
1209 | else | |
1210 | { | |
1211 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E) | |
1212 | fprintf (file, " [cfv4e]"); | |
1213 | ||
1214 | if (eflags & EF_M68K_CF_ISA_MASK) | |
1215 | { | |
1216 | char const *isa = _("unknown"); | |
1217 | char const *mac = _("unknown"); | |
1218 | char const *additional = ""; | |
1219 | ||
1220 | switch (eflags & EF_M68K_CF_ISA_MASK) | |
1221 | { | |
1222 | case EF_M68K_CF_ISA_A_NODIV: | |
1223 | isa = "A"; | |
1224 | additional = " [nodiv]"; | |
1225 | break; | |
1226 | case EF_M68K_CF_ISA_A: | |
1227 | isa = "A"; | |
1228 | break; | |
1229 | case EF_M68K_CF_ISA_A_PLUS: | |
1230 | isa = "A+"; | |
1231 | break; | |
1232 | case EF_M68K_CF_ISA_B_NOUSP: | |
1233 | isa = "B"; | |
1234 | additional = " [nousp]"; | |
1235 | break; | |
1236 | case EF_M68K_CF_ISA_B: | |
1237 | isa = "B"; | |
1238 | break; | |
1239 | case EF_M68K_CF_ISA_C: | |
1240 | isa = "C"; | |
1241 | break; | |
1242 | case EF_M68K_CF_ISA_C_NODIV: | |
1243 | isa = "C"; | |
1244 | additional = " [nodiv]"; | |
1245 | break; | |
1246 | } | |
1247 | fprintf (file, " [isa %s]%s", isa, additional); | |
1248 | ||
1249 | if (eflags & EF_M68K_CF_FLOAT) | |
1250 | fprintf (file, " [float]"); | |
1251 | ||
1252 | switch (eflags & EF_M68K_CF_MAC_MASK) | |
1253 | { | |
1254 | case 0: | |
1255 | mac = NULL; | |
1256 | break; | |
1257 | case EF_M68K_CF_MAC: | |
1258 | mac = "mac"; | |
1259 | break; | |
1260 | case EF_M68K_CF_EMAC: | |
1261 | mac = "emac"; | |
1262 | break; | |
f608cd77 NS |
1263 | case EF_M68K_CF_EMAC_B: |
1264 | mac = "emac_b"; | |
1265 | break; | |
7fb9f789 NC |
1266 | } |
1267 | if (mac) | |
1268 | fprintf (file, " [%s]", mac); | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | fputc ('\n', file); | |
1273 | ||
1274 | return TRUE; | |
1275 | } | |
1276 | ||
1277 | /* Multi-GOT support implementation design: | |
1278 | ||
1279 | Multi-GOT starts in check_relocs hook. There we scan all | |
1280 | relocations of a BFD and build a local GOT (struct elf_m68k_got) | |
1281 | for it. If a single BFD appears to require too many GOT slots with | |
1282 | R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification | |
1283 | to user. | |
1284 | After check_relocs has been invoked for each input BFD, we have | |
1285 | constructed a GOT for each input BFD. | |
1286 | ||
1287 | To minimize total number of GOTs required for a particular output BFD | |
1288 | (as some environments support only 1 GOT per output object) we try | |
1289 | to merge some of the GOTs to share an offset space. Ideally [and in most | |
1290 | cases] we end up with a single GOT. In cases when there are too many | |
1291 | restricted relocations (e.g., R_68K_GOT16O relocations) we end up with | |
1292 | several GOTs, assuming the environment can handle them. | |
1293 | ||
1294 | Partitioning is done in elf_m68k_partition_multi_got. We start with | |
1295 | an empty GOT and traverse bfd2got hashtable putting got_entries from | |
1296 | local GOTs to the new 'big' one. We do that by constructing an | |
1297 | intermediate GOT holding all the entries the local GOT has and the big | |
1298 | GOT lacks. Then we check if there is room in the big GOT to accomodate | |
1299 | all the entries from diff. On success we add those entries to the big | |
1300 | GOT; on failure we start the new 'big' GOT and retry the adding of | |
1301 | entries from the local GOT. Note that this retry will always succeed as | |
1302 | each local GOT doesn't overflow the limits. After partitioning we | |
1303 | end up with each bfd assigned one of the big GOTs. GOT entries in the | |
1304 | big GOTs are initialized with GOT offsets. Note that big GOTs are | |
1305 | positioned consequently in program space and represent a single huge GOT | |
1306 | to the outside world. | |
1307 | ||
1308 | After that we get to elf_m68k_relocate_section. There we | |
1309 | adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol | |
1310 | relocations to refer to appropriate [assigned to current input_bfd] | |
1311 | big GOT. | |
1312 | ||
1313 | Notes: | |
1314 | ||
cf869cce NC |
1315 | GOT entry type: We have several types of GOT entries. |
1316 | * R_8 type is used in entries for symbols that have at least one | |
1317 | R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40 | |
7fb9f789 | 1318 | such entries in one GOT. |
cf869cce NC |
1319 | * R_16 type is used in entries for symbols that have at least one |
1320 | R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations. | |
7fb9f789 | 1321 | We can have at most 0x4000 such entries in one GOT. |
cf869cce NC |
1322 | * R_32 type is used in all other cases. We can have as many |
1323 | such entries in one GOT as we'd like. | |
7fb9f789 NC |
1324 | When counting relocations we have to include the count of the smaller |
1325 | ranged relocations in the counts of the larger ranged ones in order | |
1326 | to correctly detect overflow. | |
1327 | ||
1328 | Sorting the GOT: In each GOT starting offsets are assigned to | |
cf869cce NC |
1329 | R_8 entries, which are followed by R_16 entries, and |
1330 | R_32 entries go at the end. See finalize_got_offsets for details. | |
7fb9f789 NC |
1331 | |
1332 | Negative GOT offsets: To double usable offset range of GOTs we use | |
1333 | negative offsets. As we assign entries with GOT offsets relative to | |
1334 | start of .got section, the offset values are positive. They become | |
1335 | negative only in relocate_section where got->offset value is | |
1336 | subtracted from them. | |
1337 | ||
1338 | 3 special GOT entries: There are 3 special GOT entries used internally | |
1339 | by loader. These entries happen to be placed to .got.plt section, | |
1340 | so we don't do anything about them in multi-GOT support. | |
1341 | ||
1342 | Memory management: All data except for hashtables | |
1343 | multi_got->bfd2got and got->entries are allocated on | |
1344 | elf_hash_table (info)->dynobj bfd (for this reason we pass 'info' | |
1345 | to most functions), so we don't need to care to free them. At the | |
1346 | moment of allocation hashtables are being linked into main data | |
1347 | structure (multi_got), all pieces of which are reachable from | |
1348 | elf_m68k_multi_got (info). We deallocate them in | |
1349 | elf_m68k_link_hash_table_free. */ | |
1350 | ||
1351 | /* Initialize GOT. */ | |
1352 | ||
1353 | static void | |
cf869cce NC |
1354 | elf_m68k_init_got (struct elf_m68k_got *got) |
1355 | { | |
1356 | got->entries = NULL; | |
1357 | got->n_slots[R_8] = 0; | |
1358 | got->n_slots[R_16] = 0; | |
1359 | got->n_slots[R_32] = 0; | |
1360 | got->local_n_slots = 0; | |
1361 | got->offset = (bfd_vma) -1; | |
7fb9f789 NC |
1362 | } |
1363 | ||
1364 | /* Destruct GOT. */ | |
1365 | ||
1366 | static void | |
1367 | elf_m68k_clear_got (struct elf_m68k_got *got) | |
1368 | { | |
1369 | if (got->entries != NULL) | |
1370 | { | |
1371 | htab_delete (got->entries); | |
1372 | got->entries = NULL; | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | /* Create and empty GOT structure. INFO is the context where memory | |
1377 | should be allocated. */ | |
1378 | ||
1379 | static struct elf_m68k_got * | |
1380 | elf_m68k_create_empty_got (struct bfd_link_info *info) | |
1381 | { | |
1382 | struct elf_m68k_got *got; | |
1383 | ||
1384 | got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got)); | |
1385 | if (got == NULL) | |
1386 | return NULL; | |
1387 | ||
cf869cce | 1388 | elf_m68k_init_got (got); |
7fb9f789 NC |
1389 | |
1390 | return got; | |
1391 | } | |
1392 | ||
1393 | /* Initialize KEY. */ | |
1394 | ||
1395 | static void | |
1396 | elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key, | |
1397 | struct elf_link_hash_entry *h, | |
cf869cce NC |
1398 | const bfd *abfd, unsigned long symndx, |
1399 | enum elf_m68k_reloc_type reloc_type) | |
7fb9f789 | 1400 | { |
cf869cce NC |
1401 | if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32) |
1402 | /* All TLS_LDM relocations share a single GOT entry. */ | |
1403 | { | |
1404 | key->bfd = NULL; | |
1405 | key->symndx = 0; | |
1406 | } | |
1407 | else if (h != NULL) | |
1408 | /* Global symbols are identified with their got_entry_key. */ | |
7fb9f789 NC |
1409 | { |
1410 | key->bfd = NULL; | |
1411 | key->symndx = elf_m68k_hash_entry (h)->got_entry_key; | |
1412 | BFD_ASSERT (key->symndx != 0); | |
1413 | } | |
1414 | else | |
cf869cce | 1415 | /* Local symbols are identified by BFD they appear in and symndx. */ |
7fb9f789 NC |
1416 | { |
1417 | key->bfd = abfd; | |
1418 | key->symndx = symndx; | |
1419 | } | |
cf869cce NC |
1420 | |
1421 | key->type = reloc_type; | |
7fb9f789 NC |
1422 | } |
1423 | ||
1424 | /* Calculate hash of got_entry. | |
1425 | ??? Is it good? */ | |
1426 | ||
1427 | static hashval_t | |
1428 | elf_m68k_got_entry_hash (const void *_entry) | |
1429 | { | |
1430 | const struct elf_m68k_got_entry_key *key; | |
1431 | ||
1432 | key = &((const struct elf_m68k_got_entry *) _entry)->key_; | |
1433 | ||
cf869cce NC |
1434 | return (key->symndx |
1435 | + (key->bfd != NULL ? (int) key->bfd->id : -1) | |
1436 | + elf_m68k_reloc_got_type (key->type)); | |
7fb9f789 NC |
1437 | } |
1438 | ||
1439 | /* Check if two got entries are equal. */ | |
1440 | ||
1441 | static int | |
1442 | elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2) | |
1443 | { | |
1444 | const struct elf_m68k_got_entry_key *key1; | |
1445 | const struct elf_m68k_got_entry_key *key2; | |
1446 | ||
1447 | key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_; | |
1448 | key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_; | |
1449 | ||
1450 | return (key1->bfd == key2->bfd | |
cf869cce NC |
1451 | && key1->symndx == key2->symndx |
1452 | && (elf_m68k_reloc_got_type (key1->type) | |
1453 | == elf_m68k_reloc_got_type (key2->type))); | |
7fb9f789 NC |
1454 | } |
1455 | ||
cf869cce NC |
1456 | /* When using negative offsets, we allocate one extra R_8, one extra R_16 |
1457 | and one extra R_32 slots to simplify handling of 2-slot entries during | |
1458 | offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */ | |
1459 | ||
1460 | /* Maximal number of R_8 slots in a single GOT. */ | |
1461 | #define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1462 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1463 | ? (0x40 - 1) \ |
7fb9f789 NC |
1464 | : 0x20) |
1465 | ||
cf869cce NC |
1466 | /* Maximal number of R_8 and R_16 slots in a single GOT. */ |
1467 | #define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1468 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1469 | ? (0x4000 - 2) \ |
7fb9f789 NC |
1470 | : 0x2000) |
1471 | ||
1472 | /* SEARCH - simply search the hashtable, don't insert new entries or fail when | |
1473 | the entry cannot be found. | |
1474 | FIND_OR_CREATE - search for an existing entry, but create new if there's | |
1475 | no such. | |
1476 | MUST_FIND - search for an existing entry and assert that it exist. | |
1477 | MUST_CREATE - assert that there's no such entry and create new one. */ | |
1478 | enum elf_m68k_get_entry_howto | |
1479 | { | |
1480 | SEARCH, | |
1481 | FIND_OR_CREATE, | |
1482 | MUST_FIND, | |
1483 | MUST_CREATE | |
1484 | }; | |
1485 | ||
1486 | /* Get or create (depending on HOWTO) entry with KEY in GOT. | |
1487 | INFO is context in which memory should be allocated (can be NULL if | |
1488 | HOWTO is SEARCH or MUST_FIND). */ | |
1489 | ||
1490 | static struct elf_m68k_got_entry * | |
1491 | elf_m68k_get_got_entry (struct elf_m68k_got *got, | |
1492 | const struct elf_m68k_got_entry_key *key, | |
1493 | enum elf_m68k_get_entry_howto howto, | |
1494 | struct bfd_link_info *info) | |
1495 | { | |
1496 | struct elf_m68k_got_entry entry_; | |
1497 | struct elf_m68k_got_entry *entry; | |
1498 | void **ptr; | |
1499 | ||
1500 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1501 | ||
1502 | if (got->entries == NULL) | |
1503 | /* This is the first entry in ABFD. Initialize hashtable. */ | |
1504 | { | |
1505 | if (howto == SEARCH) | |
1506 | return NULL; | |
1507 | ||
cf869cce | 1508 | got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT |
7fb9f789 NC |
1509 | (info), |
1510 | elf_m68k_got_entry_hash, | |
1511 | elf_m68k_got_entry_eq, NULL); | |
1512 | if (got->entries == NULL) | |
1513 | { | |
1514 | bfd_set_error (bfd_error_no_memory); | |
1515 | return NULL; | |
1516 | } | |
1517 | } | |
1518 | ||
1519 | entry_.key_ = *key; | |
1520 | ptr = htab_find_slot (got->entries, &entry_, (howto != SEARCH | |
1521 | ? INSERT : NO_INSERT)); | |
1522 | if (ptr == NULL) | |
1523 | { | |
1524 | if (howto == SEARCH) | |
1525 | /* Entry not found. */ | |
1526 | return NULL; | |
1527 | ||
1528 | /* We're out of memory. */ | |
1529 | bfd_set_error (bfd_error_no_memory); | |
1530 | return NULL; | |
1531 | } | |
1532 | ||
1533 | if (*ptr == NULL) | |
1534 | /* We didn't find the entry and we're asked to create a new one. */ | |
1535 | { | |
1536 | BFD_ASSERT (howto != MUST_FIND && howto != SEARCH); | |
1537 | ||
1538 | entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)); | |
1539 | if (entry == NULL) | |
1540 | return NULL; | |
1541 | ||
1542 | /* Initialize new entry. */ | |
1543 | entry->key_ = *key; | |
1544 | ||
1545 | entry->u.s1.refcount = 0; | |
cf869cce NC |
1546 | |
1547 | /* Mark the entry as not initialized. */ | |
1548 | entry->key_.type = R_68K_max; | |
7fb9f789 NC |
1549 | |
1550 | *ptr = entry; | |
1551 | } | |
1552 | else | |
1553 | /* We found the entry. */ | |
1554 | { | |
1555 | BFD_ASSERT (howto != MUST_CREATE); | |
1556 | ||
1557 | entry = *ptr; | |
1558 | } | |
1559 | ||
1560 | return entry; | |
1561 | } | |
1562 | ||
1563 | /* Update GOT counters when merging entry of WAS type with entry of NEW type. | |
1564 | Return the value to which ENTRY's type should be set. */ | |
1565 | ||
cf869cce NC |
1566 | static enum elf_m68k_reloc_type |
1567 | elf_m68k_update_got_entry_type (struct elf_m68k_got *got, | |
1568 | enum elf_m68k_reloc_type was, | |
d3ce72d0 | 1569 | enum elf_m68k_reloc_type new_reloc) |
7fb9f789 | 1570 | { |
cf869cce NC |
1571 | enum elf_m68k_got_offset_size was_size; |
1572 | enum elf_m68k_got_offset_size new_size; | |
1573 | bfd_vma n_slots; | |
1574 | ||
1575 | if (was == R_68K_max) | |
1576 | /* The type of the entry is not initialized yet. */ | |
7fb9f789 | 1577 | { |
cf869cce NC |
1578 | /* Update all got->n_slots counters, including n_slots[R_32]. */ |
1579 | was_size = R_LAST; | |
7fb9f789 | 1580 | |
d3ce72d0 | 1581 | was = new_reloc; |
7fb9f789 | 1582 | } |
7fb9f789 | 1583 | else |
cf869cce NC |
1584 | { |
1585 | /* !!! We, probably, should emit an error rather then fail on assert | |
1586 | in such a case. */ | |
1587 | BFD_ASSERT (elf_m68k_reloc_got_type (was) | |
d3ce72d0 | 1588 | == elf_m68k_reloc_got_type (new_reloc)); |
cf869cce NC |
1589 | |
1590 | was_size = elf_m68k_reloc_got_offset_size (was); | |
1591 | } | |
1592 | ||
d3ce72d0 NC |
1593 | new_size = elf_m68k_reloc_got_offset_size (new_reloc); |
1594 | n_slots = elf_m68k_reloc_got_n_slots (new_reloc); | |
cf869cce NC |
1595 | |
1596 | while (was_size > new_size) | |
1597 | { | |
1598 | --was_size; | |
1599 | got->n_slots[was_size] += n_slots; | |
1600 | } | |
7fb9f789 | 1601 | |
d3ce72d0 | 1602 | if (new_reloc > was) |
cf869cce NC |
1603 | /* Relocations are ordered from bigger got offset size to lesser, |
1604 | so choose the relocation type with lesser offset size. */ | |
d3ce72d0 | 1605 | was = new_reloc; |
cf869cce NC |
1606 | |
1607 | return was; | |
7fb9f789 NC |
1608 | } |
1609 | ||
7fb9f789 NC |
1610 | /* Add new or update existing entry to GOT. |
1611 | H, ABFD, TYPE and SYMNDX is data for the entry. | |
1612 | INFO is a context where memory should be allocated. */ | |
1613 | ||
1614 | static struct elf_m68k_got_entry * | |
1615 | elf_m68k_add_entry_to_got (struct elf_m68k_got *got, | |
1616 | struct elf_link_hash_entry *h, | |
1617 | const bfd *abfd, | |
cf869cce NC |
1618 | enum elf_m68k_reloc_type reloc_type, |
1619 | unsigned long symndx, | |
7fb9f789 NC |
1620 | struct bfd_link_info *info) |
1621 | { | |
1622 | struct elf_m68k_got_entry_key key_; | |
1623 | struct elf_m68k_got_entry *entry; | |
1624 | ||
1625 | if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0) | |
1626 | elf_m68k_hash_entry (h)->got_entry_key | |
1627 | = elf_m68k_multi_got (info)->global_symndx++; | |
1628 | ||
cf869cce | 1629 | elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type); |
7fb9f789 NC |
1630 | |
1631 | entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info); | |
1632 | if (entry == NULL) | |
1633 | return NULL; | |
1634 | ||
cf869cce NC |
1635 | /* Determine entry's type and update got->n_slots counters. */ |
1636 | entry->key_.type = elf_m68k_update_got_entry_type (got, | |
1637 | entry->key_.type, | |
1638 | reloc_type); | |
1639 | ||
7fb9f789 NC |
1640 | /* Update refcount. */ |
1641 | ++entry->u.s1.refcount; | |
1642 | ||
1643 | if (entry->u.s1.refcount == 1) | |
1644 | /* We see this entry for the first time. */ | |
1645 | { | |
1646 | if (entry->key_.bfd != NULL) | |
cf869cce | 1647 | got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type); |
7fb9f789 NC |
1648 | } |
1649 | ||
cf869cce | 1650 | BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots); |
7fb9f789 | 1651 | |
cf869cce NC |
1652 | if ((got->n_slots[R_8] |
1653 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1654 | || (got->n_slots[R_16] | |
1655 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1656 | /* This BFD has too many relocation. */ |
1657 | { | |
cf869cce | 1658 | if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) |
695344c0 | 1659 | /* xgettext:c-format */ |
871b3ab2 | 1660 | _bfd_error_handler (_("%pB: GOT overflow: " |
38f14ab8 | 1661 | "number of relocations with 8-bit " |
4eca0228 AM |
1662 | "offset > %d"), |
1663 | abfd, | |
1664 | ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)); | |
7fb9f789 | 1665 | else |
695344c0 | 1666 | /* xgettext:c-format */ |
871b3ab2 | 1667 | _bfd_error_handler (_("%pB: GOT overflow: " |
38f14ab8 | 1668 | "number of relocations with 8- or 16-bit " |
4eca0228 AM |
1669 | "offset > %d"), |
1670 | abfd, | |
1671 | ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)); | |
7fb9f789 NC |
1672 | |
1673 | return NULL; | |
1674 | } | |
1675 | ||
1676 | return entry; | |
1677 | } | |
1678 | ||
1679 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
1680 | ||
1681 | static hashval_t | |
1682 | elf_m68k_bfd2got_entry_hash (const void *entry) | |
1683 | { | |
1684 | const struct elf_m68k_bfd2got_entry *e; | |
1685 | ||
1686 | e = (const struct elf_m68k_bfd2got_entry *) entry; | |
1687 | ||
1688 | return e->bfd->id; | |
1689 | } | |
1690 | ||
1691 | /* Check whether two hash entries have the same bfd. */ | |
1692 | ||
1693 | static int | |
1694 | elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2) | |
1695 | { | |
1696 | const struct elf_m68k_bfd2got_entry *e1; | |
1697 | const struct elf_m68k_bfd2got_entry *e2; | |
1698 | ||
1699 | e1 = (const struct elf_m68k_bfd2got_entry *) entry1; | |
1700 | e2 = (const struct elf_m68k_bfd2got_entry *) entry2; | |
1701 | ||
1702 | return e1->bfd == e2->bfd; | |
1703 | } | |
1704 | ||
1705 | /* Destruct a bfd2got entry. */ | |
1706 | ||
1707 | static void | |
1708 | elf_m68k_bfd2got_entry_del (void *_entry) | |
1709 | { | |
1710 | struct elf_m68k_bfd2got_entry *entry; | |
1711 | ||
1712 | entry = (struct elf_m68k_bfd2got_entry *) _entry; | |
1713 | ||
1714 | BFD_ASSERT (entry->got != NULL); | |
1715 | elf_m68k_clear_got (entry->got); | |
1716 | } | |
1717 | ||
1718 | /* Find existing or create new (depending on HOWTO) bfd2got entry in | |
1719 | MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where | |
1720 | memory should be allocated. */ | |
1721 | ||
1722 | static struct elf_m68k_bfd2got_entry * | |
1723 | elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got, | |
1724 | const bfd *abfd, | |
1725 | enum elf_m68k_get_entry_howto howto, | |
1726 | struct bfd_link_info *info) | |
1727 | { | |
1728 | struct elf_m68k_bfd2got_entry entry_; | |
1729 | void **ptr; | |
1730 | struct elf_m68k_bfd2got_entry *entry; | |
1731 | ||
1732 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1733 | ||
1734 | if (multi_got->bfd2got == NULL) | |
1735 | /* This is the first GOT. Initialize bfd2got. */ | |
1736 | { | |
1737 | if (howto == SEARCH) | |
1738 | return NULL; | |
1739 | ||
1740 | multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash, | |
1741 | elf_m68k_bfd2got_entry_eq, | |
1742 | elf_m68k_bfd2got_entry_del); | |
1743 | if (multi_got->bfd2got == NULL) | |
1744 | { | |
1745 | bfd_set_error (bfd_error_no_memory); | |
1746 | return NULL; | |
1747 | } | |
1748 | } | |
1749 | ||
1750 | entry_.bfd = abfd; | |
1751 | ptr = htab_find_slot (multi_got->bfd2got, &entry_, (howto != SEARCH | |
1752 | ? INSERT : NO_INSERT)); | |
1753 | if (ptr == NULL) | |
1754 | { | |
1755 | if (howto == SEARCH) | |
1756 | /* Entry not found. */ | |
1757 | return NULL; | |
1758 | ||
1759 | /* We're out of memory. */ | |
1760 | bfd_set_error (bfd_error_no_memory); | |
1761 | return NULL; | |
1762 | } | |
1763 | ||
1764 | if (*ptr == NULL) | |
1765 | /* Entry was not found. Create new one. */ | |
1766 | { | |
1767 | BFD_ASSERT (howto != MUST_FIND && howto != SEARCH); | |
1768 | ||
1769 | entry = ((struct elf_m68k_bfd2got_entry *) | |
1770 | bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry))); | |
1771 | if (entry == NULL) | |
1772 | return NULL; | |
1773 | ||
1774 | entry->bfd = abfd; | |
1775 | ||
1776 | entry->got = elf_m68k_create_empty_got (info); | |
1777 | if (entry->got == NULL) | |
1778 | return NULL; | |
1779 | ||
1780 | *ptr = entry; | |
1781 | } | |
1782 | else | |
1783 | { | |
1784 | BFD_ASSERT (howto != MUST_CREATE); | |
1785 | ||
1786 | /* Return existing entry. */ | |
1787 | entry = *ptr; | |
1788 | } | |
1789 | ||
1790 | return entry; | |
1791 | } | |
1792 | ||
1793 | struct elf_m68k_can_merge_gots_arg | |
1794 | { | |
1795 | /* A current_got that we constructing a DIFF against. */ | |
1796 | struct elf_m68k_got *big; | |
1797 | ||
1798 | /* GOT holding entries not present or that should be changed in | |
1799 | BIG. */ | |
1800 | struct elf_m68k_got *diff; | |
1801 | ||
1802 | /* Context where to allocate memory. */ | |
1803 | struct bfd_link_info *info; | |
1804 | ||
1805 | /* Error flag. */ | |
1806 | bfd_boolean error_p; | |
1807 | }; | |
1808 | ||
1809 | /* Process a single entry from the small GOT to see if it should be added | |
1810 | or updated in the big GOT. */ | |
1811 | ||
1812 | static int | |
1813 | elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg) | |
1814 | { | |
1815 | const struct elf_m68k_got_entry *entry1; | |
1816 | struct elf_m68k_can_merge_gots_arg *arg; | |
1817 | const struct elf_m68k_got_entry *entry2; | |
cf869cce | 1818 | enum elf_m68k_reloc_type type; |
7fb9f789 NC |
1819 | |
1820 | entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr; | |
1821 | arg = (struct elf_m68k_can_merge_gots_arg *) _arg; | |
1822 | ||
1823 | entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL); | |
1824 | ||
1825 | if (entry2 != NULL) | |
cf869cce | 1826 | /* We found an existing entry. Check if we should update it. */ |
7fb9f789 | 1827 | { |
cf869cce NC |
1828 | type = elf_m68k_update_got_entry_type (arg->diff, |
1829 | entry2->key_.type, | |
1830 | entry1->key_.type); | |
7fb9f789 | 1831 | |
cf869cce | 1832 | if (type == entry2->key_.type) |
7fb9f789 NC |
1833 | /* ENTRY1 doesn't update data in ENTRY2. Skip it. |
1834 | To skip creation of difference entry we use the type, | |
1835 | which we won't see in GOT entries for sure. */ | |
cf869cce | 1836 | type = R_68K_max; |
7fb9f789 NC |
1837 | } |
1838 | else | |
cf869cce | 1839 | /* We didn't find the entry. Add entry1 to DIFF. */ |
7fb9f789 | 1840 | { |
cf869cce | 1841 | BFD_ASSERT (entry1->key_.type != R_68K_max); |
7fb9f789 | 1842 | |
cf869cce NC |
1843 | type = elf_m68k_update_got_entry_type (arg->diff, |
1844 | R_68K_max, entry1->key_.type); | |
7fb9f789 | 1845 | |
7fb9f789 | 1846 | if (entry1->key_.bfd != NULL) |
cf869cce | 1847 | arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type); |
7fb9f789 NC |
1848 | } |
1849 | ||
cf869cce | 1850 | if (type != R_68K_max) |
7fb9f789 NC |
1851 | /* Create an entry in DIFF. */ |
1852 | { | |
1853 | struct elf_m68k_got_entry *entry; | |
1854 | ||
1855 | entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE, | |
1856 | arg->info); | |
1857 | if (entry == NULL) | |
1858 | { | |
1859 | arg->error_p = TRUE; | |
1860 | return 0; | |
1861 | } | |
1862 | ||
cf869cce | 1863 | entry->key_.type = type; |
7fb9f789 NC |
1864 | } |
1865 | ||
1866 | return 1; | |
1867 | } | |
1868 | ||
1869 | /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it. | |
1870 | Construct DIFF GOT holding the entries which should be added or updated | |
1871 | in BIG GOT to accumulate information from SMALL. | |
1872 | INFO is the context where memory should be allocated. */ | |
1873 | ||
1874 | static bfd_boolean | |
1875 | elf_m68k_can_merge_gots (struct elf_m68k_got *big, | |
1876 | const struct elf_m68k_got *small, | |
1877 | struct bfd_link_info *info, | |
1878 | struct elf_m68k_got *diff) | |
1879 | { | |
1880 | struct elf_m68k_can_merge_gots_arg arg_; | |
1881 | ||
1882 | BFD_ASSERT (small->offset == (bfd_vma) -1); | |
1883 | ||
1884 | arg_.big = big; | |
1885 | arg_.diff = diff; | |
1886 | arg_.info = info; | |
1887 | arg_.error_p = FALSE; | |
1888 | htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_); | |
1889 | if (arg_.error_p) | |
1890 | { | |
1891 | diff->offset = 0; | |
1892 | return FALSE; | |
1893 | } | |
1894 | ||
1895 | /* Check for overflow. */ | |
cf869cce NC |
1896 | if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8] |
1897 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1898 | || (big->n_slots[R_16] + arg_.diff->n_slots[R_16] | |
1899 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1900 | return FALSE; |
1901 | ||
1902 | return TRUE; | |
1903 | } | |
1904 | ||
1905 | struct elf_m68k_merge_gots_arg | |
1906 | { | |
1907 | /* The BIG got. */ | |
1908 | struct elf_m68k_got *big; | |
1909 | ||
1910 | /* Context where memory should be allocated. */ | |
1911 | struct bfd_link_info *info; | |
1912 | ||
1913 | /* Error flag. */ | |
1914 | bfd_boolean error_p; | |
1915 | }; | |
1916 | ||
1917 | /* Process a single entry from DIFF got. Add or update corresponding | |
1918 | entry in the BIG got. */ | |
1919 | ||
1920 | static int | |
1921 | elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg) | |
1922 | { | |
1923 | const struct elf_m68k_got_entry *from; | |
1924 | struct elf_m68k_merge_gots_arg *arg; | |
1925 | struct elf_m68k_got_entry *to; | |
1926 | ||
1927 | from = (const struct elf_m68k_got_entry *) *entry_ptr; | |
1928 | arg = (struct elf_m68k_merge_gots_arg *) _arg; | |
1929 | ||
1930 | to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE, | |
1931 | arg->info); | |
1932 | if (to == NULL) | |
1933 | { | |
1934 | arg->error_p = TRUE; | |
1935 | return 0; | |
1936 | } | |
1937 | ||
1938 | BFD_ASSERT (to->u.s1.refcount == 0); | |
1939 | /* All we need to merge is TYPE. */ | |
cf869cce | 1940 | to->key_.type = from->key_.type; |
7fb9f789 NC |
1941 | |
1942 | return 1; | |
1943 | } | |
1944 | ||
1945 | /* Merge data from DIFF to BIG. INFO is context where memory should be | |
1946 | allocated. */ | |
1947 | ||
1948 | static bfd_boolean | |
1949 | elf_m68k_merge_gots (struct elf_m68k_got *big, | |
1950 | struct elf_m68k_got *diff, | |
1951 | struct bfd_link_info *info) | |
1952 | { | |
1953 | if (diff->entries != NULL) | |
1954 | /* DIFF is not empty. Merge it into BIG GOT. */ | |
1955 | { | |
1956 | struct elf_m68k_merge_gots_arg arg_; | |
1957 | ||
1958 | /* Merge entries. */ | |
1959 | arg_.big = big; | |
1960 | arg_.info = info; | |
1961 | arg_.error_p = FALSE; | |
1962 | htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_); | |
1963 | if (arg_.error_p) | |
1964 | return FALSE; | |
1965 | ||
1966 | /* Merge counters. */ | |
cf869cce NC |
1967 | big->n_slots[R_8] += diff->n_slots[R_8]; |
1968 | big->n_slots[R_16] += diff->n_slots[R_16]; | |
1969 | big->n_slots[R_32] += diff->n_slots[R_32]; | |
1970 | big->local_n_slots += diff->local_n_slots; | |
7fb9f789 NC |
1971 | } |
1972 | else | |
1973 | /* DIFF is empty. */ | |
1974 | { | |
cf869cce NC |
1975 | BFD_ASSERT (diff->n_slots[R_8] == 0); |
1976 | BFD_ASSERT (diff->n_slots[R_16] == 0); | |
1977 | BFD_ASSERT (diff->n_slots[R_32] == 0); | |
1978 | BFD_ASSERT (diff->local_n_slots == 0); | |
7fb9f789 NC |
1979 | } |
1980 | ||
1981 | BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p | |
cf869cce NC |
1982 | || ((big->n_slots[R_8] |
1983 | <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1984 | && (big->n_slots[R_16] | |
1985 | <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))); | |
7fb9f789 NC |
1986 | |
1987 | return TRUE; | |
1988 | } | |
1989 | ||
1990 | struct elf_m68k_finalize_got_offsets_arg | |
1991 | { | |
cf869cce NC |
1992 | /* Ranges of the offsets for GOT entries. |
1993 | R_x entries receive offsets between offset1[R_x] and offset2[R_x]. | |
1994 | R_x is R_8, R_16 and R_32. */ | |
1995 | bfd_vma *offset1; | |
1996 | bfd_vma *offset2; | |
7fb9f789 NC |
1997 | |
1998 | /* Mapping from global symndx to global symbols. | |
1999 | This is used to build lists of got entries for global symbols. */ | |
2000 | struct elf_m68k_link_hash_entry **symndx2h; | |
cf869cce NC |
2001 | |
2002 | bfd_vma n_ldm_entries; | |
7fb9f789 NC |
2003 | }; |
2004 | ||
2005 | /* Assign ENTRY an offset. Build list of GOT entries for global symbols | |
2006 | along the way. */ | |
2007 | ||
2008 | static int | |
2009 | elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg) | |
2010 | { | |
2011 | struct elf_m68k_got_entry *entry; | |
2012 | struct elf_m68k_finalize_got_offsets_arg *arg; | |
2013 | ||
cf869cce NC |
2014 | enum elf_m68k_got_offset_size got_offset_size; |
2015 | bfd_vma entry_size; | |
2016 | ||
7fb9f789 NC |
2017 | entry = (struct elf_m68k_got_entry *) *entry_ptr; |
2018 | arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg; | |
2019 | ||
2020 | /* This should be a fresh entry created in elf_m68k_can_merge_gots. */ | |
2021 | BFD_ASSERT (entry->u.s1.refcount == 0); | |
2022 | ||
cf869cce NC |
2023 | /* Get GOT offset size for the entry . */ |
2024 | got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type); | |
7fb9f789 | 2025 | |
cf869cce NC |
2026 | /* Calculate entry size in bytes. */ |
2027 | entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type); | |
7fb9f789 | 2028 | |
cf869cce NC |
2029 | /* Check if we should switch to negative range of the offsets. */ |
2030 | if (arg->offset1[got_offset_size] + entry_size | |
2031 | > arg->offset2[got_offset_size]) | |
2032 | { | |
2033 | /* Verify that this is the only switch to negative range for | |
2034 | got_offset_size. If this assertion fails, then we've miscalculated | |
2035 | range for got_offset_size entries in | |
2036 | elf_m68k_finalize_got_offsets. */ | |
2037 | BFD_ASSERT (arg->offset2[got_offset_size] | |
2038 | != arg->offset2[-(int) got_offset_size - 1]); | |
2039 | ||
2040 | /* Switch. */ | |
2041 | arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1]; | |
2042 | arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1]; | |
2043 | ||
2044 | /* Verify that now we have enough room for the entry. */ | |
2045 | BFD_ASSERT (arg->offset1[got_offset_size] + entry_size | |
2046 | <= arg->offset2[got_offset_size]); | |
7fb9f789 NC |
2047 | } |
2048 | ||
cf869cce NC |
2049 | /* Assign offset to entry. */ |
2050 | entry->u.s2.offset = arg->offset1[got_offset_size]; | |
2051 | arg->offset1[got_offset_size] += entry_size; | |
2052 | ||
7fb9f789 NC |
2053 | if (entry->key_.bfd == NULL) |
2054 | /* Hook up this entry into the list of got_entries of H. */ | |
2055 | { | |
2056 | struct elf_m68k_link_hash_entry *h; | |
2057 | ||
7fb9f789 | 2058 | h = arg->symndx2h[entry->key_.symndx]; |
cf869cce NC |
2059 | if (h != NULL) |
2060 | { | |
2061 | entry->u.s2.next = h->glist; | |
2062 | h->glist = entry; | |
2063 | } | |
2064 | else | |
2065 | /* This should be the entry for TLS_LDM relocation then. */ | |
2066 | { | |
2067 | BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type) | |
2068 | == R_68K_TLS_LDM32) | |
2069 | && entry->key_.symndx == 0); | |
7fb9f789 | 2070 | |
cf869cce NC |
2071 | ++arg->n_ldm_entries; |
2072 | } | |
7fb9f789 NC |
2073 | } |
2074 | else | |
2075 | /* This entry is for local symbol. */ | |
2076 | entry->u.s2.next = NULL; | |
2077 | ||
2078 | return 1; | |
2079 | } | |
2080 | ||
2081 | /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we | |
2082 | should use negative offsets. | |
2083 | Build list of GOT entries for global symbols along the way. | |
2084 | SYMNDX2H is mapping from global symbol indices to actual | |
cf869cce NC |
2085 | global symbols. |
2086 | Return offset at which next GOT should start. */ | |
7fb9f789 NC |
2087 | |
2088 | static void | |
2089 | elf_m68k_finalize_got_offsets (struct elf_m68k_got *got, | |
2090 | bfd_boolean use_neg_got_offsets_p, | |
cf869cce NC |
2091 | struct elf_m68k_link_hash_entry **symndx2h, |
2092 | bfd_vma *final_offset, bfd_vma *n_ldm_entries) | |
7fb9f789 NC |
2093 | { |
2094 | struct elf_m68k_finalize_got_offsets_arg arg_; | |
cf869cce NC |
2095 | bfd_vma offset1_[2 * R_LAST]; |
2096 | bfd_vma offset2_[2 * R_LAST]; | |
2097 | int i; | |
2098 | bfd_vma start_offset; | |
7fb9f789 NC |
2099 | |
2100 | BFD_ASSERT (got->offset != (bfd_vma) -1); | |
2101 | ||
2102 | /* We set entry offsets relative to the .got section (and not the | |
2103 | start of a particular GOT), so that we can use them in | |
cf869cce | 2104 | finish_dynamic_symbol without needing to know the GOT which they come |
7fb9f789 NC |
2105 | from. */ |
2106 | ||
cf869cce NC |
2107 | /* Put offset1 in the middle of offset1_, same for offset2. */ |
2108 | arg_.offset1 = offset1_ + R_LAST; | |
2109 | arg_.offset2 = offset2_ + R_LAST; | |
2110 | ||
2111 | start_offset = got->offset; | |
2112 | ||
7fb9f789 | 2113 | if (use_neg_got_offsets_p) |
cf869cce NC |
2114 | /* Setup both negative and positive ranges for R_8, R_16 and R_32. */ |
2115 | i = -(int) R_32 - 1; | |
2116 | else | |
2117 | /* Setup positives ranges for R_8, R_16 and R_32. */ | |
2118 | i = (int) R_8; | |
2119 | ||
2120 | for (; i <= (int) R_32; ++i) | |
7fb9f789 | 2121 | { |
cf869cce | 2122 | int j; |
7fb9f789 NC |
2123 | size_t n; |
2124 | ||
cf869cce NC |
2125 | /* Set beginning of the range of offsets I. */ |
2126 | arg_.offset1[i] = start_offset; | |
7fb9f789 | 2127 | |
cf869cce NC |
2128 | /* Calculate number of slots that require I offsets. */ |
2129 | j = (i >= 0) ? i : -i - 1; | |
2130 | n = (j >= 1) ? got->n_slots[j - 1] : 0; | |
2131 | n = got->n_slots[j] - n; | |
7fb9f789 | 2132 | |
cf869cce NC |
2133 | if (use_neg_got_offsets_p && n != 0) |
2134 | { | |
2135 | if (i < 0) | |
2136 | /* We first fill the positive side of the range, so we might | |
2137 | end up with one empty slot at that side when we can't fit | |
2138 | whole 2-slot entry. Account for that at negative side of | |
2139 | the interval with one additional entry. */ | |
2140 | n = n / 2 + 1; | |
2141 | else | |
2142 | /* When the number of slots is odd, make positive side of the | |
2143 | range one entry bigger. */ | |
2144 | n = (n + 1) / 2; | |
2145 | } | |
2146 | ||
2147 | /* N is the number of slots that require I offsets. | |
2148 | Calculate length of the range for I offsets. */ | |
2149 | n = 4 * n; | |
7fb9f789 | 2150 | |
cf869cce NC |
2151 | /* Set end of the range. */ |
2152 | arg_.offset2[i] = start_offset + n; | |
7fb9f789 | 2153 | |
cf869cce | 2154 | start_offset = arg_.offset2[i]; |
7fb9f789 NC |
2155 | } |
2156 | ||
cf869cce NC |
2157 | if (!use_neg_got_offsets_p) |
2158 | /* Make sure that if we try to switch to negative offsets in | |
2159 | elf_m68k_finalize_got_offsets_1, the assert therein will catch | |
2160 | the bug. */ | |
2161 | for (i = R_8; i <= R_32; ++i) | |
2162 | arg_.offset2[-i - 1] = arg_.offset2[i]; | |
7fb9f789 | 2163 | |
cf869cce NC |
2164 | /* Setup got->offset. offset1[R_8] is either in the middle or at the |
2165 | beginning of GOT depending on use_neg_got_offsets_p. */ | |
2166 | got->offset = arg_.offset1[R_8]; | |
7fb9f789 | 2167 | |
cf869cce NC |
2168 | arg_.symndx2h = symndx2h; |
2169 | arg_.n_ldm_entries = 0; | |
7fb9f789 | 2170 | |
cf869cce NC |
2171 | /* Assign offsets. */ |
2172 | htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_); | |
7fb9f789 | 2173 | |
cf869cce NC |
2174 | /* Check offset ranges we have actually assigned. */ |
2175 | for (i = (int) R_8; i <= (int) R_32; ++i) | |
2176 | BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4); | |
7fb9f789 | 2177 | |
cf869cce NC |
2178 | *final_offset = start_offset; |
2179 | *n_ldm_entries = arg_.n_ldm_entries; | |
7fb9f789 NC |
2180 | } |
2181 | ||
2182 | struct elf_m68k_partition_multi_got_arg | |
2183 | { | |
2184 | /* The GOT we are adding entries to. Aka big got. */ | |
2185 | struct elf_m68k_got *current_got; | |
2186 | ||
2187 | /* Offset to assign the next CURRENT_GOT. */ | |
2188 | bfd_vma offset; | |
2189 | ||
2190 | /* Context where memory should be allocated. */ | |
2191 | struct bfd_link_info *info; | |
2192 | ||
cf869cce | 2193 | /* Total number of slots in the .got section. |
7fb9f789 | 2194 | This is used to calculate size of the .got and .rela.got sections. */ |
cf869cce | 2195 | bfd_vma n_slots; |
7fb9f789 | 2196 | |
cf869cce NC |
2197 | /* Difference in numbers of allocated slots in the .got section |
2198 | and necessary relocations in the .rela.got section. | |
7fb9f789 | 2199 | This is used to calculate size of the .rela.got section. */ |
cf869cce | 2200 | bfd_vma slots_relas_diff; |
7fb9f789 NC |
2201 | |
2202 | /* Error flag. */ | |
2203 | bfd_boolean error_p; | |
2204 | ||
2205 | /* Mapping from global symndx to global symbols. | |
2206 | This is used to build lists of got entries for global symbols. */ | |
2207 | struct elf_m68k_link_hash_entry **symndx2h; | |
2208 | }; | |
2209 | ||
cf869cce NC |
2210 | static void |
2211 | elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg) | |
2212 | { | |
2213 | bfd_vma n_ldm_entries; | |
2214 | ||
2215 | elf_m68k_finalize_got_offsets (arg->current_got, | |
2216 | (elf_m68k_hash_table (arg->info) | |
2217 | ->use_neg_got_offsets_p), | |
2218 | arg->symndx2h, | |
2219 | &arg->offset, &n_ldm_entries); | |
2220 | ||
2221 | arg->n_slots += arg->current_got->n_slots[R_32]; | |
2222 | ||
0e1862bb | 2223 | if (!bfd_link_pic (arg->info)) |
cf869cce NC |
2224 | /* If we are generating a shared object, we need to |
2225 | output a R_68K_RELATIVE reloc so that the dynamic | |
2226 | linker can adjust this GOT entry. Overwise we | |
2227 | don't need space in .rela.got for local symbols. */ | |
2228 | arg->slots_relas_diff += arg->current_got->local_n_slots; | |
2229 | ||
2230 | /* @LDM relocations require a 2-slot GOT entry, but only | |
2231 | one relocation. Account for that. */ | |
2232 | arg->slots_relas_diff += n_ldm_entries; | |
2233 | ||
2234 | BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots); | |
2235 | } | |
2236 | ||
2237 | ||
7fb9f789 NC |
2238 | /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT |
2239 | or start a new CURRENT_GOT. */ | |
2240 | ||
2241 | static int | |
2242 | elf_m68k_partition_multi_got_1 (void **_entry, void *_arg) | |
2243 | { | |
2244 | struct elf_m68k_bfd2got_entry *entry; | |
2245 | struct elf_m68k_partition_multi_got_arg *arg; | |
2246 | struct elf_m68k_got *got; | |
7fb9f789 NC |
2247 | struct elf_m68k_got diff_; |
2248 | struct elf_m68k_got *diff; | |
2249 | ||
2250 | entry = (struct elf_m68k_bfd2got_entry *) *_entry; | |
2251 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2252 | ||
2253 | got = entry->got; | |
2254 | BFD_ASSERT (got != NULL); | |
2255 | BFD_ASSERT (got->offset == (bfd_vma) -1); | |
2256 | ||
2257 | diff = NULL; | |
2258 | ||
2259 | if (arg->current_got != NULL) | |
2260 | /* Construct diff. */ | |
2261 | { | |
2262 | diff = &diff_; | |
cf869cce | 2263 | elf_m68k_init_got (diff); |
7fb9f789 NC |
2264 | |
2265 | if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff)) | |
2266 | { | |
2267 | if (diff->offset == 0) | |
2268 | /* Offset set to 0 in the diff_ indicates an error. */ | |
2269 | { | |
2270 | arg->error_p = TRUE; | |
2271 | goto final_return; | |
2272 | } | |
2273 | ||
2274 | if (elf_m68k_hash_table (arg->info)->allow_multigot_p) | |
2275 | { | |
2276 | elf_m68k_clear_got (diff); | |
cf869cce | 2277 | /* Schedule to finish up current_got and start new one. */ |
7fb9f789 NC |
2278 | diff = NULL; |
2279 | } | |
2280 | /* else | |
2281 | Merge GOTs no matter what. If big GOT overflows, | |
2282 | we'll fail in relocate_section due to truncated relocations. | |
2283 | ||
2284 | ??? May be fail earlier? E.g., in can_merge_gots. */ | |
2285 | } | |
2286 | } | |
2287 | else | |
2288 | /* Diff of got against empty current_got is got itself. */ | |
2289 | { | |
cf869cce | 2290 | /* Create empty current_got to put subsequent GOTs to. */ |
7fb9f789 NC |
2291 | arg->current_got = elf_m68k_create_empty_got (arg->info); |
2292 | if (arg->current_got == NULL) | |
2293 | { | |
2294 | arg->error_p = TRUE; | |
2295 | goto final_return; | |
2296 | } | |
2297 | ||
2298 | arg->current_got->offset = arg->offset; | |
2299 | ||
2300 | diff = got; | |
2301 | } | |
2302 | ||
7fb9f789 NC |
2303 | if (diff != NULL) |
2304 | { | |
cf869cce | 2305 | if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info)) |
7fb9f789 NC |
2306 | { |
2307 | arg->error_p = TRUE; | |
2308 | goto final_return; | |
2309 | } | |
2310 | ||
2311 | /* Now we can free GOT. */ | |
2312 | elf_m68k_clear_got (got); | |
2313 | ||
cf869cce | 2314 | entry->got = arg->current_got; |
7fb9f789 NC |
2315 | } |
2316 | else | |
2317 | { | |
7fb9f789 | 2318 | /* Finish up current_got. */ |
cf869cce | 2319 | elf_m68k_partition_multi_got_2 (arg); |
7fb9f789 | 2320 | |
cf869cce NC |
2321 | /* Schedule to start a new current_got. */ |
2322 | arg->current_got = NULL; | |
7fb9f789 NC |
2323 | |
2324 | /* Retry. */ | |
2325 | if (!elf_m68k_partition_multi_got_1 (_entry, _arg)) | |
2326 | { | |
2327 | BFD_ASSERT (arg->error_p); | |
2328 | goto final_return; | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | final_return: | |
2333 | if (diff != NULL) | |
2334 | elf_m68k_clear_got (diff); | |
2335 | ||
535b785f | 2336 | return !arg->error_p; |
7fb9f789 NC |
2337 | } |
2338 | ||
2339 | /* Helper function to build symndx2h mapping. */ | |
2340 | ||
2341 | static bfd_boolean | |
2342 | elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h, | |
2343 | void *_arg) | |
2344 | { | |
2345 | struct elf_m68k_link_hash_entry *h; | |
2346 | ||
2347 | h = elf_m68k_hash_entry (_h); | |
2348 | ||
2349 | if (h->got_entry_key != 0) | |
2350 | /* H has at least one entry in the GOT. */ | |
2351 | { | |
2352 | struct elf_m68k_partition_multi_got_arg *arg; | |
2353 | ||
2354 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2355 | ||
2356 | BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL); | |
2357 | arg->symndx2h[h->got_entry_key] = h; | |
2358 | } | |
2359 | ||
2360 | return TRUE; | |
2361 | } | |
2362 | ||
2363 | /* Merge GOTs of some BFDs, assign offsets to GOT entries and build | |
2364 | lists of GOT entries for global symbols. | |
2365 | Calculate sizes of .got and .rela.got sections. */ | |
2366 | ||
2367 | static bfd_boolean | |
2368 | elf_m68k_partition_multi_got (struct bfd_link_info *info) | |
2369 | { | |
2370 | struct elf_m68k_multi_got *multi_got; | |
2371 | struct elf_m68k_partition_multi_got_arg arg_; | |
2372 | ||
2373 | multi_got = elf_m68k_multi_got (info); | |
2374 | ||
2375 | arg_.current_got = NULL; | |
2376 | arg_.offset = 0; | |
2377 | arg_.info = info; | |
cf869cce NC |
2378 | arg_.n_slots = 0; |
2379 | arg_.slots_relas_diff = 0; | |
7fb9f789 NC |
2380 | arg_.error_p = FALSE; |
2381 | ||
2382 | if (multi_got->bfd2got != NULL) | |
2383 | { | |
2384 | /* Initialize symndx2h mapping. */ | |
2385 | { | |
2386 | arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx | |
2387 | * sizeof (*arg_.symndx2h)); | |
2388 | if (arg_.symndx2h == NULL) | |
2389 | return FALSE; | |
2390 | ||
2391 | elf_link_hash_traverse (elf_hash_table (info), | |
2392 | elf_m68k_init_symndx2h_1, &arg_); | |
2393 | } | |
2394 | ||
2395 | /* Partition. */ | |
2396 | htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1, | |
2397 | &arg_); | |
2398 | if (arg_.error_p) | |
2399 | { | |
2400 | free (arg_.symndx2h); | |
2401 | arg_.symndx2h = NULL; | |
2402 | ||
2403 | return FALSE; | |
2404 | } | |
2405 | ||
2406 | /* Finish up last current_got. */ | |
cf869cce | 2407 | elf_m68k_partition_multi_got_2 (&arg_); |
7fb9f789 NC |
2408 | |
2409 | free (arg_.symndx2h); | |
266abb8f | 2410 | } |
7fb9f789 NC |
2411 | |
2412 | if (elf_hash_table (info)->dynobj != NULL) | |
2413 | /* Set sizes of .got and .rela.got sections. */ | |
266abb8f | 2414 | { |
7fb9f789 | 2415 | asection *s; |
425c6cb0 | 2416 | |
ce558b89 | 2417 | s = elf_hash_table (info)->sgot; |
7fb9f789 | 2418 | if (s != NULL) |
cf869cce | 2419 | s->size = arg_.offset; |
425c6cb0 | 2420 | else |
cf869cce | 2421 | BFD_ASSERT (arg_.offset == 0); |
425c6cb0 | 2422 | |
cf869cce NC |
2423 | BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots); |
2424 | arg_.n_slots -= arg_.slots_relas_diff; | |
7fb9f789 | 2425 | |
ce558b89 | 2426 | s = elf_hash_table (info)->srelgot; |
7fb9f789 | 2427 | if (s != NULL) |
cf869cce | 2428 | s->size = arg_.n_slots * sizeof (Elf32_External_Rela); |
3bdcfdf4 | 2429 | else |
cf869cce | 2430 | BFD_ASSERT (arg_.n_slots == 0); |
9e1281c7 | 2431 | } |
7fb9f789 NC |
2432 | else |
2433 | BFD_ASSERT (multi_got->bfd2got == NULL); | |
9e1281c7 | 2434 | |
b34976b6 | 2435 | return TRUE; |
9e1281c7 CM |
2436 | } |
2437 | ||
7fb9f789 NC |
2438 | /* Copy any information related to dynamic linking from a pre-existing |
2439 | symbol to a newly created symbol. Also called to copy flags and | |
2440 | other back-end info to a weakdef, in which case the symbol is not | |
2441 | newly created and plt/got refcounts and dynamic indices should not | |
2442 | be copied. */ | |
2443 | ||
2444 | static void | |
2445 | elf_m68k_copy_indirect_symbol (struct bfd_link_info *info, | |
2446 | struct elf_link_hash_entry *_dir, | |
2447 | struct elf_link_hash_entry *_ind) | |
2448 | { | |
2449 | struct elf_m68k_link_hash_entry *dir; | |
2450 | struct elf_m68k_link_hash_entry *ind; | |
2451 | ||
2452 | _bfd_elf_link_hash_copy_indirect (info, _dir, _ind); | |
2453 | ||
2454 | if (_ind->root.type != bfd_link_hash_indirect) | |
2455 | return; | |
2456 | ||
2457 | dir = elf_m68k_hash_entry (_dir); | |
2458 | ind = elf_m68k_hash_entry (_ind); | |
2459 | ||
e5f2b1de NC |
2460 | /* Any absolute non-dynamic relocations against an indirect or weak |
2461 | definition will be against the target symbol. */ | |
2462 | _dir->non_got_ref |= _ind->non_got_ref; | |
2463 | ||
7fb9f789 NC |
2464 | /* We might have a direct symbol already having entries in the GOTs. |
2465 | Update its key only in case indirect symbol has GOT entries and | |
2466 | assert that both indirect and direct symbols don't have GOT entries | |
2467 | at the same time. */ | |
2468 | if (ind->got_entry_key != 0) | |
266abb8f | 2469 | { |
7fb9f789 NC |
2470 | BFD_ASSERT (dir->got_entry_key == 0); |
2471 | /* Assert that GOTs aren't partioned yet. */ | |
2472 | BFD_ASSERT (ind->glist == NULL); | |
425c6cb0 | 2473 | |
7fb9f789 NC |
2474 | dir->got_entry_key = ind->got_entry_key; |
2475 | ind->got_entry_key = 0; | |
266abb8f | 2476 | } |
9e1281c7 | 2477 | } |
7fb9f789 | 2478 | |
252b5132 RH |
2479 | /* Look through the relocs for a section during the first phase, and |
2480 | allocate space in the global offset table or procedure linkage | |
2481 | table. */ | |
2482 | ||
b34976b6 | 2483 | static bfd_boolean |
2c3fc389 NC |
2484 | elf_m68k_check_relocs (bfd *abfd, |
2485 | struct bfd_link_info *info, | |
2486 | asection *sec, | |
2487 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
2488 | { |
2489 | bfd *dynobj; | |
2490 | Elf_Internal_Shdr *symtab_hdr; | |
2491 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
2492 | const Elf_Internal_Rela *rel; |
2493 | const Elf_Internal_Rela *rel_end; | |
252b5132 | 2494 | asection *sreloc; |
7fb9f789 | 2495 | struct elf_m68k_got *got; |
252b5132 | 2496 | |
0e1862bb | 2497 | if (bfd_link_relocatable (info)) |
b34976b6 | 2498 | return TRUE; |
252b5132 RH |
2499 | |
2500 | dynobj = elf_hash_table (info)->dynobj; | |
2501 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2502 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 | 2503 | |
252b5132 RH |
2504 | sreloc = NULL; |
2505 | ||
7fb9f789 NC |
2506 | got = NULL; |
2507 | ||
252b5132 RH |
2508 | rel_end = relocs + sec->reloc_count; |
2509 | for (rel = relocs; rel < rel_end; rel++) | |
2510 | { | |
2511 | unsigned long r_symndx; | |
2512 | struct elf_link_hash_entry *h; | |
2513 | ||
2514 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2515 | ||
2516 | if (r_symndx < symtab_hdr->sh_info) | |
2517 | h = NULL; | |
2518 | else | |
973a3492 L |
2519 | { |
2520 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2521 | while (h->root.type == bfd_link_hash_indirect | |
2522 | || h->root.type == bfd_link_hash_warning) | |
2523 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2524 | } | |
252b5132 RH |
2525 | |
2526 | switch (ELF32_R_TYPE (rel->r_info)) | |
2527 | { | |
2528 | case R_68K_GOT8: | |
2529 | case R_68K_GOT16: | |
2530 | case R_68K_GOT32: | |
2531 | if (h != NULL | |
2532 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2533 | break; | |
2534 | /* Fall through. */ | |
cf869cce NC |
2535 | |
2536 | /* Relative GOT relocations. */ | |
252b5132 RH |
2537 | case R_68K_GOT8O: |
2538 | case R_68K_GOT16O: | |
2539 | case R_68K_GOT32O: | |
cf869cce NC |
2540 | /* Fall through. */ |
2541 | ||
2542 | /* TLS relocations. */ | |
2543 | case R_68K_TLS_GD8: | |
2544 | case R_68K_TLS_GD16: | |
2545 | case R_68K_TLS_GD32: | |
2546 | case R_68K_TLS_LDM8: | |
2547 | case R_68K_TLS_LDM16: | |
2548 | case R_68K_TLS_LDM32: | |
2549 | case R_68K_TLS_IE8: | |
2550 | case R_68K_TLS_IE16: | |
2551 | case R_68K_TLS_IE32: | |
2552 | ||
e5f2b1de NC |
2553 | case R_68K_TLS_TPREL32: |
2554 | case R_68K_TLS_DTPREL32: | |
2555 | ||
2556 | if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32 | |
0e1862bb | 2557 | && bfd_link_pic (info)) |
e5f2b1de NC |
2558 | /* Do the special chorus for libraries with static TLS. */ |
2559 | info->flags |= DF_STATIC_TLS; | |
2560 | ||
252b5132 RH |
2561 | /* This symbol requires a global offset table entry. */ |
2562 | ||
2563 | if (dynobj == NULL) | |
2564 | { | |
2565 | /* Create the .got section. */ | |
2566 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
2567 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 2568 | return FALSE; |
252b5132 RH |
2569 | } |
2570 | ||
7fb9f789 | 2571 | if (got == NULL) |
252b5132 | 2572 | { |
7fb9f789 | 2573 | struct elf_m68k_bfd2got_entry *bfd2got_entry; |
252b5132 | 2574 | |
7fb9f789 NC |
2575 | bfd2got_entry |
2576 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
2577 | abfd, FIND_OR_CREATE, info); | |
2578 | if (bfd2got_entry == NULL) | |
2579 | return FALSE; | |
252b5132 | 2580 | |
7fb9f789 NC |
2581 | got = bfd2got_entry->got; |
2582 | BFD_ASSERT (got != NULL); | |
252b5132 | 2583 | } |
7fb9f789 NC |
2584 | |
2585 | { | |
2586 | struct elf_m68k_got_entry *got_entry; | |
2587 | ||
2588 | /* Add entry to got. */ | |
2589 | got_entry = elf_m68k_add_entry_to_got (got, h, abfd, | |
2590 | ELF32_R_TYPE (rel->r_info), | |
2591 | r_symndx, info); | |
2592 | if (got_entry == NULL) | |
2593 | return FALSE; | |
2594 | ||
2595 | if (got_entry->u.s1.refcount == 1) | |
2596 | { | |
2597 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2598 | if (h != NULL | |
2599 | && h->dynindx == -1 | |
2600 | && !h->forced_local) | |
2601 | { | |
2602 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
2603 | return FALSE; | |
2604 | } | |
7fb9f789 NC |
2605 | } |
2606 | } | |
2607 | ||
252b5132 RH |
2608 | break; |
2609 | ||
2610 | case R_68K_PLT8: | |
2611 | case R_68K_PLT16: | |
2612 | case R_68K_PLT32: | |
2613 | /* This symbol requires a procedure linkage table entry. We | |
2614 | actually build the entry in adjust_dynamic_symbol, | |
07d6d2b8 AM |
2615 | because this might be a case of linking PIC code which is |
2616 | never referenced by a dynamic object, in which case we | |
2617 | don't need to generate a procedure linkage table entry | |
2618 | after all. */ | |
252b5132 RH |
2619 | |
2620 | /* If this is a local symbol, we resolve it directly without | |
2621 | creating a procedure linkage table entry. */ | |
2622 | if (h == NULL) | |
2623 | continue; | |
2624 | ||
f5385ebf | 2625 | h->needs_plt = 1; |
51b64d56 | 2626 | h->plt.refcount++; |
252b5132 RH |
2627 | break; |
2628 | ||
2629 | case R_68K_PLT8O: | |
2630 | case R_68K_PLT16O: | |
2631 | case R_68K_PLT32O: | |
2632 | /* This symbol requires a procedure linkage table entry. */ | |
2633 | ||
2634 | if (h == NULL) | |
2635 | { | |
2636 | /* It does not make sense to have this relocation for a | |
2637 | local symbol. FIXME: does it? How to handle it if | |
2638 | it does make sense? */ | |
2639 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2640 | return FALSE; |
252b5132 RH |
2641 | } |
2642 | ||
2643 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 2644 | if (h->dynindx == -1 |
f5385ebf | 2645 | && !h->forced_local) |
252b5132 | 2646 | { |
c152c796 | 2647 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2648 | return FALSE; |
252b5132 RH |
2649 | } |
2650 | ||
f5385ebf | 2651 | h->needs_plt = 1; |
51b64d56 | 2652 | h->plt.refcount++; |
252b5132 RH |
2653 | break; |
2654 | ||
2655 | case R_68K_PC8: | |
2656 | case R_68K_PC16: | |
2657 | case R_68K_PC32: | |
2658 | /* If we are creating a shared library and this is not a local | |
2659 | symbol, we need to copy the reloc into the shared library. | |
2660 | However when linking with -Bsymbolic and this is a global | |
2661 | symbol which is defined in an object we are including in the | |
2662 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
2663 | reloc directly. At this point we have not seen all the input | |
2664 | files, so it is possible that DEF_REGULAR is not set now but | |
2665 | will be set later (it is never cleared). We account for that | |
2666 | possibility below by storing information in the | |
2667 | pcrel_relocs_copied field of the hash table entry. */ | |
0e1862bb | 2668 | if (!(bfd_link_pic (info) |
252b5132 RH |
2669 | && (sec->flags & SEC_ALLOC) != 0 |
2670 | && h != NULL | |
a496fbc8 | 2671 | && (!SYMBOLIC_BIND (info, h) |
b6152c34 | 2672 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 2673 | || !h->def_regular))) |
252b5132 RH |
2674 | { |
2675 | if (h != NULL) | |
2676 | { | |
2677 | /* Make sure a plt entry is created for this symbol if | |
2678 | it turns out to be a function defined by a dynamic | |
2679 | object. */ | |
51b64d56 | 2680 | h->plt.refcount++; |
252b5132 RH |
2681 | } |
2682 | break; | |
2683 | } | |
2684 | /* Fall through. */ | |
2685 | case R_68K_8: | |
2686 | case R_68K_16: | |
2687 | case R_68K_32: | |
810e6986 NC |
2688 | /* We don't need to handle relocs into sections not going into |
2689 | the "real" output. */ | |
2690 | if ((sec->flags & SEC_ALLOC) == 0) | |
2691 | break; | |
2692 | ||
252b5132 RH |
2693 | if (h != NULL) |
2694 | { | |
2695 | /* Make sure a plt entry is created for this symbol if it | |
2696 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 2697 | h->plt.refcount++; |
e5f2b1de | 2698 | |
0e1862bb | 2699 | if (bfd_link_executable (info)) |
e5f2b1de NC |
2700 | /* This symbol needs a non-GOT reference. */ |
2701 | h->non_got_ref = 1; | |
252b5132 RH |
2702 | } |
2703 | ||
2704 | /* If we are creating a shared library, we need to copy the | |
2705 | reloc into the shared library. */ | |
5056ba1d L |
2706 | if (bfd_link_pic (info) |
2707 | && (h == NULL | |
2708 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
252b5132 RH |
2709 | { |
2710 | /* When creating a shared object, we must copy these | |
2711 | reloc types into the output file. We create a reloc | |
2712 | section in dynobj and make room for this reloc. */ | |
2713 | if (sreloc == NULL) | |
2714 | { | |
83bac4b0 NC |
2715 | sreloc = _bfd_elf_make_dynamic_reloc_section |
2716 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
252b5132 | 2717 | |
252b5132 | 2718 | if (sreloc == NULL) |
83bac4b0 | 2719 | return FALSE; |
252b5132 RH |
2720 | } |
2721 | ||
3e829b4a AS |
2722 | if (sec->flags & SEC_READONLY |
2723 | /* Don't set DF_TEXTREL yet for PC relative | |
2724 | relocations, they might be discarded later. */ | |
2725 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
2726 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2727 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
2728 | info->flags |= DF_TEXTREL; | |
2729 | ||
eea6121a | 2730 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 2731 | |
b6152c34 AS |
2732 | /* We count the number of PC relative relocations we have |
2733 | entered for this symbol, so that we can discard them | |
2734 | again if, in the -Bsymbolic case, the symbol is later | |
2735 | defined by a regular object, or, in the normal shared | |
2736 | case, the symbol is forced to be local. Note that this | |
2737 | function is only called if we are using an m68kelf linker | |
2738 | hash table, which means that h is really a pointer to an | |
252b5132 | 2739 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
2740 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
2741 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2742 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 2743 | { |
252b5132 | 2744 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
2745 | struct elf_m68k_pcrel_relocs_copied **head; |
2746 | ||
2747 | if (h != NULL) | |
2748 | { | |
2749 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 2750 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
2751 | head = &eh->pcrel_relocs_copied; |
2752 | } | |
2753 | else | |
2754 | { | |
2755 | asection *s; | |
6edfbbad | 2756 | void *vpp; |
87d72d41 | 2757 | Elf_Internal_Sym *isym; |
6edfbbad | 2758 | |
87d72d41 AM |
2759 | isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache, |
2760 | abfd, r_symndx); | |
2761 | if (isym == NULL) | |
b6152c34 | 2762 | return FALSE; |
252b5132 | 2763 | |
87d72d41 AM |
2764 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2765 | if (s == NULL) | |
2766 | s = sec; | |
2767 | ||
6edfbbad DJ |
2768 | vpp = &elf_section_data (s)->local_dynrel; |
2769 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 2770 | } |
252b5132 | 2771 | |
b6152c34 | 2772 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
2773 | if (p->section == sreloc) |
2774 | break; | |
2775 | ||
2776 | if (p == NULL) | |
2777 | { | |
2778 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 2779 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 2780 | if (p == NULL) |
b34976b6 | 2781 | return FALSE; |
b6152c34 AS |
2782 | p->next = *head; |
2783 | *head = p; | |
252b5132 RH |
2784 | p->section = sreloc; |
2785 | p->count = 0; | |
2786 | } | |
2787 | ||
2788 | ++p->count; | |
2789 | } | |
2790 | } | |
2791 | ||
2792 | break; | |
2793 | ||
2794 | /* This relocation describes the C++ object vtable hierarchy. | |
2795 | Reconstruct it for later use during GC. */ | |
2796 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 2797 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 2798 | return FALSE; |
252b5132 RH |
2799 | break; |
2800 | ||
2801 | /* This relocation describes which C++ vtable entries are actually | |
2802 | used. Record for later use during GC. */ | |
2803 | case R_68K_GNU_VTENTRY: | |
d17e0c6e JB |
2804 | BFD_ASSERT (h != NULL); |
2805 | if (h != NULL | |
2806 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 2807 | return FALSE; |
252b5132 RH |
2808 | break; |
2809 | ||
2810 | default: | |
2811 | break; | |
2812 | } | |
2813 | } | |
2814 | ||
b34976b6 | 2815 | return TRUE; |
252b5132 RH |
2816 | } |
2817 | ||
2818 | /* Return the section that should be marked against GC for a given | |
2819 | relocation. */ | |
2820 | ||
2821 | static asection * | |
07adf181 AM |
2822 | elf_m68k_gc_mark_hook (asection *sec, |
2823 | struct bfd_link_info *info, | |
2824 | Elf_Internal_Rela *rel, | |
2825 | struct elf_link_hash_entry *h, | |
2826 | Elf_Internal_Sym *sym) | |
252b5132 RH |
2827 | { |
2828 | if (h != NULL) | |
07adf181 AM |
2829 | switch (ELF32_R_TYPE (rel->r_info)) |
2830 | { | |
2831 | case R_68K_GNU_VTINHERIT: | |
2832 | case R_68K_GNU_VTENTRY: | |
2833 | return NULL; | |
2834 | } | |
2835 | ||
2836 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 | 2837 | } |
cc3e26be RS |
2838 | \f |
2839 | /* Return the type of PLT associated with OUTPUT_BFD. */ | |
2840 | ||
2841 | static const struct elf_m68k_plt_info * | |
2842 | elf_m68k_get_plt_info (bfd *output_bfd) | |
2843 | { | |
2844 | unsigned int features; | |
2845 | ||
2846 | features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd)); | |
2847 | if (features & cpu32) | |
2848 | return &elf_cpu32_plt_info; | |
2849 | if (features & mcfisa_b) | |
2850 | return &elf_isab_plt_info; | |
9a2e615a NS |
2851 | if (features & mcfisa_c) |
2852 | return &elf_isac_plt_info; | |
cc3e26be RS |
2853 | return &elf_m68k_plt_info; |
2854 | } | |
2855 | ||
2856 | /* This function is called after all the input files have been read, | |
2857 | and the input sections have been assigned to output sections. | |
2858 | It's a convenient place to determine the PLT style. */ | |
2859 | ||
2860 | static bfd_boolean | |
2861 | elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) | |
2862 | { | |
7fb9f789 NC |
2863 | /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got |
2864 | sections. */ | |
2865 | if (!elf_m68k_partition_multi_got (info)) | |
2866 | return FALSE; | |
2867 | ||
cc3e26be RS |
2868 | elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd); |
2869 | return TRUE; | |
2870 | } | |
252b5132 | 2871 | |
252b5132 RH |
2872 | /* Adjust a symbol defined by a dynamic object and referenced by a |
2873 | regular object. The current definition is in some section of the | |
2874 | dynamic object, but we're not including those sections. We have to | |
2875 | change the definition to something the rest of the link can | |
2876 | understand. */ | |
2877 | ||
b34976b6 | 2878 | static bfd_boolean |
2c3fc389 NC |
2879 | elf_m68k_adjust_dynamic_symbol (struct bfd_link_info *info, |
2880 | struct elf_link_hash_entry *h) | |
252b5132 | 2881 | { |
cc3e26be | 2882 | struct elf_m68k_link_hash_table *htab; |
252b5132 RH |
2883 | bfd *dynobj; |
2884 | asection *s; | |
252b5132 | 2885 | |
cc3e26be | 2886 | htab = elf_m68k_hash_table (info); |
ce558b89 | 2887 | dynobj = htab->root.dynobj; |
252b5132 RH |
2888 | |
2889 | /* Make sure we know what is going on here. */ | |
2890 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 2891 | && (h->needs_plt |
60d67dc8 | 2892 | || h->is_weakalias |
f5385ebf AM |
2893 | || (h->def_dynamic |
2894 | && h->ref_regular | |
2895 | && !h->def_regular))); | |
252b5132 RH |
2896 | |
2897 | /* If this is a function, put it in the procedure linkage table. We | |
2898 | will fill in the contents of the procedure linkage table later, | |
2899 | when we know the address of the .got section. */ | |
2900 | if (h->type == STT_FUNC | |
f5385ebf | 2901 | || h->needs_plt) |
252b5132 | 2902 | { |
9dfe8738 | 2903 | if ((h->plt.refcount <= 0 |
07d6d2b8 | 2904 | || SYMBOL_CALLS_LOCAL (info, h) |
5056ba1d L |
2905 | || ((ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
2906 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
9dfe8738 | 2907 | && h->root.type == bfd_link_hash_undefweak)) |
252b5132 RH |
2908 | /* We must always create the plt entry if it was referenced |
2909 | by a PLTxxO relocation. In this case we already recorded | |
2910 | it as a dynamic symbol. */ | |
2911 | && h->dynindx == -1) | |
2912 | { | |
2913 | /* This case can occur if we saw a PLTxx reloc in an input | |
2914 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
2915 | object, or if all references were garbage collected. In |
2916 | such a case, we don't actually need to build a procedure | |
2917 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 2918 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2919 | h->needs_plt = 0; |
b34976b6 | 2920 | return TRUE; |
252b5132 RH |
2921 | } |
2922 | ||
2923 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 2924 | if (h->dynindx == -1 |
f5385ebf | 2925 | && !h->forced_local) |
252b5132 | 2926 | { |
c152c796 | 2927 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2928 | return FALSE; |
252b5132 RH |
2929 | } |
2930 | ||
ce558b89 | 2931 | s = htab->root.splt; |
252b5132 RH |
2932 | BFD_ASSERT (s != NULL); |
2933 | ||
2934 | /* If this is the first .plt entry, make room for the special | |
2935 | first entry. */ | |
eea6121a | 2936 | if (s->size == 0) |
cc3e26be | 2937 | s->size = htab->plt_info->size; |
252b5132 RH |
2938 | |
2939 | /* If this symbol is not defined in a regular file, and we are | |
2940 | not generating a shared library, then set the symbol to this | |
2941 | location in the .plt. This is required to make function | |
2942 | pointers compare as equal between the normal executable and | |
2943 | the shared library. */ | |
0e1862bb | 2944 | if (!bfd_link_pic (info) |
f5385ebf | 2945 | && !h->def_regular) |
252b5132 RH |
2946 | { |
2947 | h->root.u.def.section = s; | |
eea6121a | 2948 | h->root.u.def.value = s->size; |
252b5132 RH |
2949 | } |
2950 | ||
eea6121a | 2951 | h->plt.offset = s->size; |
252b5132 RH |
2952 | |
2953 | /* Make room for this entry. */ | |
cc3e26be | 2954 | s->size += htab->plt_info->size; |
252b5132 RH |
2955 | |
2956 | /* We also need to make an entry in the .got.plt section, which | |
2957 | will be placed in the .got section by the linker script. */ | |
ce558b89 | 2958 | s = htab->root.sgotplt; |
252b5132 | 2959 | BFD_ASSERT (s != NULL); |
eea6121a | 2960 | s->size += 4; |
252b5132 RH |
2961 | |
2962 | /* We also need to make an entry in the .rela.plt section. */ | |
ce558b89 | 2963 | s = htab->root.srelplt; |
252b5132 | 2964 | BFD_ASSERT (s != NULL); |
eea6121a | 2965 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 2966 | |
b34976b6 | 2967 | return TRUE; |
252b5132 RH |
2968 | } |
2969 | ||
2970 | /* Reinitialize the plt offset now that it is not used as a reference | |
2971 | count any more. */ | |
2972 | h->plt.offset = (bfd_vma) -1; | |
2973 | ||
2974 | /* If this is a weak symbol, and there is a real definition, the | |
2975 | processor independent code will have arranged for us to see the | |
2976 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2977 | if (h->is_weakalias) |
252b5132 | 2978 | { |
60d67dc8 AM |
2979 | struct elf_link_hash_entry *def = weakdef (h); |
2980 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2981 | h->root.u.def.section = def->root.u.def.section; | |
2982 | h->root.u.def.value = def->root.u.def.value; | |
b34976b6 | 2983 | return TRUE; |
252b5132 RH |
2984 | } |
2985 | ||
2986 | /* This is a reference to a symbol defined by a dynamic object which | |
2987 | is not a function. */ | |
2988 | ||
2989 | /* If we are creating a shared library, we must presume that the | |
2990 | only references to the symbol are via the global offset table. | |
2991 | For such cases we need not do anything here; the relocations will | |
2992 | be handled correctly by relocate_section. */ | |
0e1862bb | 2993 | if (bfd_link_pic (info)) |
b34976b6 | 2994 | return TRUE; |
252b5132 | 2995 | |
e5f2b1de NC |
2996 | /* If there are no references to this symbol that do not use the |
2997 | GOT, we don't need to generate a copy reloc. */ | |
2998 | if (!h->non_got_ref) | |
2999 | return TRUE; | |
3000 | ||
252b5132 RH |
3001 | /* We must allocate the symbol in our .dynbss section, which will |
3002 | become part of the .bss section of the executable. There will be | |
3003 | an entry for this symbol in the .dynsym section. The dynamic | |
3004 | object will contain position independent code, so all references | |
3005 | from the dynamic object to this symbol will go through the global | |
3006 | offset table. The dynamic linker will use the .dynsym entry to | |
3007 | determine the address it must put in the global offset table, so | |
3008 | both the dynamic object and the regular object will refer to the | |
3009 | same memory location for the variable. */ | |
3010 | ||
3d4d4302 | 3011 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
252b5132 RH |
3012 | BFD_ASSERT (s != NULL); |
3013 | ||
3014 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
3015 | copy the initial value out of the dynamic object and into the | |
3016 | runtime process image. We need to remember the offset into the | |
3017 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 3018 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
252b5132 RH |
3019 | { |
3020 | asection *srel; | |
3021 | ||
3d4d4302 | 3022 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 | 3023 | BFD_ASSERT (srel != NULL); |
eea6121a | 3024 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 3025 | h->needs_copy = 1; |
252b5132 RH |
3026 | } |
3027 | ||
6cabe1ea | 3028 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
252b5132 RH |
3029 | } |
3030 | ||
3031 | /* Set the sizes of the dynamic sections. */ | |
3032 | ||
b34976b6 | 3033 | static bfd_boolean |
2c3fc389 NC |
3034 | elf_m68k_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3035 | struct bfd_link_info *info) | |
252b5132 RH |
3036 | { |
3037 | bfd *dynobj; | |
3038 | asection *s; | |
b34976b6 AM |
3039 | bfd_boolean plt; |
3040 | bfd_boolean relocs; | |
252b5132 RH |
3041 | |
3042 | dynobj = elf_hash_table (info)->dynobj; | |
3043 | BFD_ASSERT (dynobj != NULL); | |
3044 | ||
3045 | if (elf_hash_table (info)->dynamic_sections_created) | |
3046 | { | |
3047 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 3048 | if (bfd_link_executable (info) && !info->nointerp) |
252b5132 | 3049 | { |
3d4d4302 | 3050 | s = bfd_get_linker_section (dynobj, ".interp"); |
252b5132 | 3051 | BFD_ASSERT (s != NULL); |
eea6121a | 3052 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
3053 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3054 | } | |
3055 | } | |
3056 | else | |
3057 | { | |
3058 | /* We may have created entries in the .rela.got section. | |
3059 | However, if we are not creating the dynamic sections, we will | |
3060 | not actually use these entries. Reset the size of .rela.got, | |
3061 | which will cause it to get stripped from the output file | |
3062 | below. */ | |
ce558b89 | 3063 | s = elf_hash_table (info)->srelgot; |
252b5132 | 3064 | if (s != NULL) |
eea6121a | 3065 | s->size = 0; |
252b5132 RH |
3066 | } |
3067 | ||
b6152c34 AS |
3068 | /* If this is a -Bsymbolic shared link, then we need to discard all |
3069 | PC relative relocs against symbols defined in a regular object. | |
3070 | For the normal shared case we discard the PC relative relocs | |
3071 | against symbols that have become local due to visibility changes. | |
3072 | We allocated space for them in the check_relocs routine, but we | |
3073 | will not fill them in in the relocate_section routine. */ | |
0e1862bb | 3074 | if (bfd_link_pic (info)) |
0cca5f05 AS |
3075 | elf_link_hash_traverse (elf_hash_table (info), |
3076 | elf_m68k_discard_copies, | |
2c3fc389 | 3077 | info); |
252b5132 RH |
3078 | |
3079 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3080 | determined the sizes of the various dynamic sections. Allocate | |
3081 | memory for them. */ | |
b34976b6 AM |
3082 | plt = FALSE; |
3083 | relocs = FALSE; | |
252b5132 RH |
3084 | for (s = dynobj->sections; s != NULL; s = s->next) |
3085 | { | |
3086 | const char *name; | |
252b5132 RH |
3087 | |
3088 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3089 | continue; | |
3090 | ||
3091 | /* It's OK to base decisions on the section name, because none | |
3092 | of the dynobj section names depend upon the input files. */ | |
3093 | name = bfd_get_section_name (dynobj, s); | |
3094 | ||
252b5132 RH |
3095 | if (strcmp (name, ".plt") == 0) |
3096 | { | |
c456f082 AM |
3097 | /* Remember whether there is a PLT. */ |
3098 | plt = s->size != 0; | |
252b5132 | 3099 | } |
0112cd26 | 3100 | else if (CONST_STRNEQ (name, ".rela")) |
252b5132 | 3101 | { |
c456f082 | 3102 | if (s->size != 0) |
252b5132 | 3103 | { |
b34976b6 | 3104 | relocs = TRUE; |
252b5132 RH |
3105 | |
3106 | /* We use the reloc_count field as a counter if we need | |
3107 | to copy relocs into the output file. */ | |
3108 | s->reloc_count = 0; | |
3109 | } | |
3110 | } | |
0112cd26 | 3111 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 3112 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
3113 | { |
3114 | /* It's not one of our sections, so don't allocate space. */ | |
3115 | continue; | |
3116 | } | |
3117 | ||
c456f082 | 3118 | if (s->size == 0) |
252b5132 | 3119 | { |
c456f082 AM |
3120 | /* If we don't need this section, strip it from the |
3121 | output file. This is mostly to handle .rela.bss and | |
3122 | .rela.plt. We must create both sections in | |
3123 | create_dynamic_sections, because they must be created | |
3124 | before the linker maps input sections to output | |
3125 | sections. The linker does that before | |
3126 | adjust_dynamic_symbol is called, and it is that | |
3127 | function which decides whether anything needs to go | |
3128 | into these sections. */ | |
8423293d | 3129 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
3130 | continue; |
3131 | } | |
3132 | ||
c456f082 AM |
3133 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3134 | continue; | |
3135 | ||
252b5132 | 3136 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
3137 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
3138 | Unused entries should be reclaimed before the section's contents | |
3139 | are written out, but at the moment this does not happen. Thus in | |
3140 | order to prevent writing out garbage, we initialise the section's | |
3141 | contents to zero. */ | |
eea6121a | 3142 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 3143 | if (s->contents == NULL) |
b34976b6 | 3144 | return FALSE; |
252b5132 RH |
3145 | } |
3146 | ||
3147 | if (elf_hash_table (info)->dynamic_sections_created) | |
3148 | { | |
3149 | /* Add some entries to the .dynamic section. We fill in the | |
3150 | values later, in elf_m68k_finish_dynamic_sections, but we | |
3151 | must add the entries now so that we get the correct size for | |
3152 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
3153 | dynamic linker and used by the debugger. */ | |
dc810e39 | 3154 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 3155 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 3156 | |
0e1862bb | 3157 | if (bfd_link_executable (info)) |
252b5132 | 3158 | { |
dc810e39 | 3159 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 3160 | return FALSE; |
252b5132 RH |
3161 | } |
3162 | ||
3163 | if (plt) | |
3164 | { | |
dc810e39 AM |
3165 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
3166 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
3167 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
3168 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 3169 | return FALSE; |
252b5132 RH |
3170 | } |
3171 | ||
3172 | if (relocs) | |
3173 | { | |
dc810e39 AM |
3174 | if (!add_dynamic_entry (DT_RELA, 0) |
3175 | || !add_dynamic_entry (DT_RELASZ, 0) | |
3176 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
b34976b6 | 3177 | return FALSE; |
252b5132 RH |
3178 | } |
3179 | ||
aa91b392 | 3180 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 3181 | { |
dc810e39 | 3182 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 3183 | return FALSE; |
252b5132 RH |
3184 | } |
3185 | } | |
dc810e39 | 3186 | #undef add_dynamic_entry |
252b5132 | 3187 | |
b34976b6 | 3188 | return TRUE; |
252b5132 RH |
3189 | } |
3190 | ||
0cca5f05 | 3191 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
3192 | creating a shared object. In the -Bsymbolic case it discards the |
3193 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 3194 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
3195 | discards space for pc-relative relocs that have become local due to |
3196 | symbol visibility changes. We allocated space for them in the | |
3197 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
3198 | relocate_section routine. |
3199 | ||
3200 | We also check whether any of the remaining relocations apply | |
3201 | against a readonly section, and set the DF_TEXTREL flag in this | |
3202 | case. */ | |
252b5132 | 3203 | |
b34976b6 | 3204 | static bfd_boolean |
2c3fc389 NC |
3205 | elf_m68k_discard_copies (struct elf_link_hash_entry *h, |
3206 | void * inf) | |
252b5132 | 3207 | { |
b6152c34 | 3208 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
3209 | struct elf_m68k_pcrel_relocs_copied *s; |
3210 | ||
2516a1ee | 3211 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
3e829b4a AS |
3212 | { |
3213 | if ((info->flags & DF_TEXTREL) == 0) | |
3214 | { | |
3215 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
3216 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3217 | s != NULL; | |
3218 | s = s->next) | |
3e829b4a AS |
3219 | if ((s->section->flags & SEC_READONLY) != 0) |
3220 | { | |
3221 | info->flags |= DF_TEXTREL; | |
3222 | break; | |
3223 | } | |
3224 | } | |
0cca5f05 | 3225 | |
cab0ad83 AS |
3226 | /* Make sure undefined weak symbols are output as a dynamic symbol |
3227 | in PIEs. */ | |
3228 | if (h->non_got_ref | |
3229 | && h->root.type == bfd_link_hash_undefweak | |
3230 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3231 | && h->dynindx == -1 | |
3232 | && !h->forced_local) | |
3233 | { | |
3234 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3235 | return FALSE; | |
3236 | } | |
3237 | ||
3e829b4a AS |
3238 | return TRUE; |
3239 | } | |
252b5132 | 3240 | |
0cca5f05 AS |
3241 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3242 | s != NULL; | |
3243 | s = s->next) | |
eea6121a | 3244 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 3245 | |
b34976b6 | 3246 | return TRUE; |
252b5132 RH |
3247 | } |
3248 | ||
cf869cce NC |
3249 | |
3250 | /* Install relocation RELA. */ | |
3251 | ||
3252 | static void | |
3253 | elf_m68k_install_rela (bfd *output_bfd, | |
3254 | asection *srela, | |
3255 | Elf_Internal_Rela *rela) | |
3256 | { | |
3257 | bfd_byte *loc; | |
3258 | ||
3259 | loc = srela->contents; | |
3260 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
3261 | bfd_elf32_swap_reloca_out (output_bfd, rela, loc); | |
3262 | } | |
3263 | ||
325e58c7 NC |
3264 | /* Find the base offsets for thread-local storage in this object, |
3265 | for GD/LD and IE/LE respectively. */ | |
3266 | ||
3267 | #define DTP_OFFSET 0x8000 | |
3268 | #define TP_OFFSET 0x7000 | |
cf869cce NC |
3269 | |
3270 | static bfd_vma | |
3271 | dtpoff_base (struct bfd_link_info *info) | |
3272 | { | |
3273 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3274 | if (elf_hash_table (info)->tls_sec == NULL) | |
3275 | return 0; | |
325e58c7 | 3276 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; |
cf869cce NC |
3277 | } |
3278 | ||
cf869cce | 3279 | static bfd_vma |
325e58c7 | 3280 | tpoff_base (struct bfd_link_info *info) |
cf869cce | 3281 | { |
cf869cce | 3282 | /* If tls_sec is NULL, we should have signalled an error already. */ |
325e58c7 | 3283 | if (elf_hash_table (info)->tls_sec == NULL) |
cf869cce | 3284 | return 0; |
325e58c7 NC |
3285 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; |
3286 | } | |
3287 | ||
3288 | /* Output necessary relocation to handle a symbol during static link. | |
3289 | This function is called from elf_m68k_relocate_section. */ | |
3290 | ||
3291 | static void | |
3292 | elf_m68k_init_got_entry_static (struct bfd_link_info *info, | |
3293 | bfd *output_bfd, | |
3294 | enum elf_m68k_reloc_type r_type, | |
3295 | asection *sgot, | |
3296 | bfd_vma got_entry_offset, | |
3297 | bfd_vma relocation) | |
3298 | { | |
3299 | switch (elf_m68k_reloc_got_type (r_type)) | |
3300 | { | |
3301 | case R_68K_GOT32O: | |
3302 | bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset); | |
3303 | break; | |
3304 | ||
3305 | case R_68K_TLS_GD32: | |
3306 | /* We know the offset within the module, | |
3307 | put it into the second GOT slot. */ | |
3308 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3309 | sgot->contents + got_entry_offset + 4); | |
3310 | /* FALLTHRU */ | |
3311 | ||
3312 | case R_68K_TLS_LDM32: | |
3313 | /* Mark it as belonging to module 1, the executable. */ | |
3314 | bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset); | |
3315 | break; | |
3316 | ||
3317 | case R_68K_TLS_IE32: | |
3318 | bfd_put_32 (output_bfd, relocation - tpoff_base (info), | |
3319 | sgot->contents + got_entry_offset); | |
3320 | break; | |
3321 | ||
3322 | default: | |
3323 | BFD_ASSERT (FALSE); | |
3324 | } | |
3325 | } | |
3326 | ||
3327 | /* Output necessary relocation to handle a local symbol | |
3328 | during dynamic link. | |
3329 | This function is called either from elf_m68k_relocate_section | |
3330 | or from elf_m68k_finish_dynamic_symbol. */ | |
3331 | ||
3332 | static void | |
3333 | elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info, | |
3334 | bfd *output_bfd, | |
3335 | enum elf_m68k_reloc_type r_type, | |
3336 | asection *sgot, | |
3337 | bfd_vma got_entry_offset, | |
3338 | bfd_vma relocation, | |
3339 | asection *srela) | |
3340 | { | |
3341 | Elf_Internal_Rela outrel; | |
3342 | ||
3343 | switch (elf_m68k_reloc_got_type (r_type)) | |
3344 | { | |
3345 | case R_68K_GOT32O: | |
3346 | /* Emit RELATIVE relocation to initialize GOT slot | |
3347 | at run-time. */ | |
3348 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
3349 | outrel.r_addend = relocation; | |
3350 | break; | |
3351 | ||
3352 | case R_68K_TLS_GD32: | |
3353 | /* We know the offset within the module, | |
3354 | put it into the second GOT slot. */ | |
3355 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3356 | sgot->contents + got_entry_offset + 4); | |
3357 | /* FALLTHRU */ | |
3358 | ||
3359 | case R_68K_TLS_LDM32: | |
3360 | /* We don't know the module number, | |
3361 | create a relocation for it. */ | |
3362 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32); | |
3363 | outrel.r_addend = 0; | |
3364 | break; | |
3365 | ||
3366 | case R_68K_TLS_IE32: | |
3367 | /* Emit TPREL relocation to initialize GOT slot | |
3368 | at run-time. */ | |
3369 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32); | |
3370 | outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma; | |
3371 | break; | |
3372 | ||
3373 | default: | |
3374 | BFD_ASSERT (FALSE); | |
3375 | } | |
3376 | ||
3377 | /* Offset of the GOT entry. */ | |
3378 | outrel.r_offset = (sgot->output_section->vma | |
3379 | + sgot->output_offset | |
3380 | + got_entry_offset); | |
3381 | ||
3382 | /* Install one of the above relocations. */ | |
3383 | elf_m68k_install_rela (output_bfd, srela, &outrel); | |
3384 | ||
3385 | bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset); | |
cf869cce NC |
3386 | } |
3387 | ||
252b5132 RH |
3388 | /* Relocate an M68K ELF section. */ |
3389 | ||
b34976b6 | 3390 | static bfd_boolean |
2c3fc389 NC |
3391 | elf_m68k_relocate_section (bfd *output_bfd, |
3392 | struct bfd_link_info *info, | |
3393 | bfd *input_bfd, | |
3394 | asection *input_section, | |
3395 | bfd_byte *contents, | |
3396 | Elf_Internal_Rela *relocs, | |
3397 | Elf_Internal_Sym *local_syms, | |
3398 | asection **local_sections) | |
252b5132 | 3399 | { |
252b5132 RH |
3400 | Elf_Internal_Shdr *symtab_hdr; |
3401 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
3402 | asection *sgot; |
3403 | asection *splt; | |
3404 | asection *sreloc; | |
325e58c7 | 3405 | asection *srela; |
7fb9f789 | 3406 | struct elf_m68k_got *got; |
252b5132 RH |
3407 | Elf_Internal_Rela *rel; |
3408 | Elf_Internal_Rela *relend; | |
3409 | ||
252b5132 RH |
3410 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3411 | sym_hashes = elf_sym_hashes (input_bfd); | |
252b5132 RH |
3412 | |
3413 | sgot = NULL; | |
3414 | splt = NULL; | |
3415 | sreloc = NULL; | |
325e58c7 | 3416 | srela = NULL; |
252b5132 | 3417 | |
7fb9f789 NC |
3418 | got = NULL; |
3419 | ||
252b5132 RH |
3420 | rel = relocs; |
3421 | relend = relocs + input_section->reloc_count; | |
3422 | for (; rel < relend; rel++) | |
3423 | { | |
3424 | int r_type; | |
3425 | reloc_howto_type *howto; | |
3426 | unsigned long r_symndx; | |
3427 | struct elf_link_hash_entry *h; | |
3428 | Elf_Internal_Sym *sym; | |
3429 | asection *sec; | |
3430 | bfd_vma relocation; | |
44f745a6 | 3431 | bfd_boolean unresolved_reloc; |
252b5132 | 3432 | bfd_reloc_status_type r; |
5056ba1d | 3433 | bfd_boolean resolved_to_zero; |
252b5132 RH |
3434 | |
3435 | r_type = ELF32_R_TYPE (rel->r_info); | |
3436 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
3437 | { | |
3438 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3439 | return FALSE; |
252b5132 RH |
3440 | } |
3441 | howto = howto_table + r_type; | |
3442 | ||
3443 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3444 | ||
252b5132 RH |
3445 | h = NULL; |
3446 | sym = NULL; | |
3447 | sec = NULL; | |
44f745a6 | 3448 | unresolved_reloc = FALSE; |
560e09e9 | 3449 | |
252b5132 RH |
3450 | if (r_symndx < symtab_hdr->sh_info) |
3451 | { | |
3452 | sym = local_syms + r_symndx; | |
3453 | sec = local_sections[r_symndx]; | |
8517fae7 | 3454 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
3455 | } |
3456 | else | |
3457 | { | |
62d887d4 | 3458 | bfd_boolean warned, ignored; |
560e09e9 | 3459 | |
b2a8e766 AM |
3460 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3461 | r_symndx, symtab_hdr, sym_hashes, | |
3462 | h, sec, relocation, | |
62d887d4 | 3463 | unresolved_reloc, warned, ignored); |
252b5132 RH |
3464 | } |
3465 | ||
dbaa2011 | 3466 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 3467 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3468 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 3469 | |
0e1862bb | 3470 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
3471 | continue; |
3472 | ||
5056ba1d L |
3473 | resolved_to_zero = (h != NULL |
3474 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
3475 | ||
252b5132 RH |
3476 | switch (r_type) |
3477 | { | |
3478 | case R_68K_GOT8: | |
3479 | case R_68K_GOT16: | |
3480 | case R_68K_GOT32: | |
3481 | /* Relocation is to the address of the entry for this symbol | |
3482 | in the global offset table. */ | |
3483 | if (h != NULL | |
3484 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7fb9f789 | 3485 | { |
7fb9f789 NC |
3486 | if (elf_m68k_hash_table (info)->local_gp_p) |
3487 | { | |
3488 | bfd_vma sgot_output_offset; | |
3489 | bfd_vma got_offset; | |
3490 | ||
ce558b89 | 3491 | sgot = elf_hash_table (info)->sgot; |
7fb9f789 | 3492 | |
ce558b89 | 3493 | if (sgot != NULL) |
7fb9f789 | 3494 | sgot_output_offset = sgot->output_offset; |
ce558b89 AM |
3495 | else |
3496 | /* In this case we have a reference to | |
3497 | _GLOBAL_OFFSET_TABLE_, but the GOT itself is | |
3498 | empty. | |
3499 | ??? Issue a warning? */ | |
3500 | sgot_output_offset = 0; | |
7fb9f789 NC |
3501 | |
3502 | if (got == NULL) | |
3503 | { | |
3504 | struct elf_m68k_bfd2got_entry *bfd2got_entry; | |
3505 | ||
3506 | bfd2got_entry | |
3507 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
3508 | input_bfd, SEARCH, NULL); | |
3509 | ||
3510 | if (bfd2got_entry != NULL) | |
3511 | { | |
3512 | got = bfd2got_entry->got; | |
3513 | BFD_ASSERT (got != NULL); | |
3514 | ||
3515 | got_offset = got->offset; | |
3516 | } | |
3517 | else | |
3518 | /* In this case we have a reference to | |
3519 | _GLOBAL_OFFSET_TABLE_, but no other references | |
3520 | accessing any GOT entries. | |
3521 | ??? Issue a warning? */ | |
3522 | got_offset = 0; | |
3523 | } | |
3524 | else | |
3525 | got_offset = got->offset; | |
3526 | ||
3527 | /* Adjust GOT pointer to point to the GOT | |
3528 | assigned to input_bfd. */ | |
f57718b4 | 3529 | rel->r_addend += sgot_output_offset + got_offset; |
7fb9f789 NC |
3530 | } |
3531 | else | |
3532 | BFD_ASSERT (got == NULL || got->offset == 0); | |
3533 | ||
3534 | break; | |
3535 | } | |
252b5132 RH |
3536 | /* Fall through. */ |
3537 | case R_68K_GOT8O: | |
3538 | case R_68K_GOT16O: | |
3539 | case R_68K_GOT32O: | |
cf869cce NC |
3540 | |
3541 | case R_68K_TLS_LDM32: | |
3542 | case R_68K_TLS_LDM16: | |
3543 | case R_68K_TLS_LDM8: | |
3544 | ||
3545 | case R_68K_TLS_GD8: | |
3546 | case R_68K_TLS_GD16: | |
3547 | case R_68K_TLS_GD32: | |
3548 | ||
3549 | case R_68K_TLS_IE8: | |
3550 | case R_68K_TLS_IE16: | |
3551 | case R_68K_TLS_IE32: | |
3552 | ||
252b5132 RH |
3553 | /* Relocation is the offset of the entry for this symbol in |
3554 | the global offset table. */ | |
3555 | ||
3556 | { | |
7fb9f789 NC |
3557 | struct elf_m68k_got_entry_key key_; |
3558 | bfd_vma *off_ptr; | |
252b5132 RH |
3559 | bfd_vma off; |
3560 | ||
ce558b89 AM |
3561 | sgot = elf_hash_table (info)->sgot; |
3562 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 3563 | |
7fb9f789 NC |
3564 | if (got == NULL) |
3565 | { | |
3566 | got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
3567 | input_bfd, MUST_FIND, | |
3568 | NULL)->got; | |
3569 | BFD_ASSERT (got != NULL); | |
3570 | } | |
3571 | ||
3572 | /* Get GOT offset for this symbol. */ | |
cf869cce NC |
3573 | elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx, |
3574 | r_type); | |
7fb9f789 NC |
3575 | off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND, |
3576 | NULL)->u.s2.offset; | |
3577 | off = *off_ptr; | |
3578 | ||
cf869cce NC |
3579 | /* The offset must always be a multiple of 4. We use |
3580 | the least significant bit to record whether we have | |
3581 | already generated the necessary reloc. */ | |
3582 | if ((off & 1) != 0) | |
3583 | off &= ~1; | |
3584 | else | |
252b5132 | 3585 | { |
cf869cce NC |
3586 | if (h != NULL |
3587 | /* @TLSLDM relocations are bounded to the module, in | |
3588 | which the symbol is defined -- not to the symbol | |
3589 | itself. */ | |
3590 | && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32) | |
252b5132 | 3591 | { |
cf869cce NC |
3592 | bfd_boolean dyn; |
3593 | ||
3594 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
0e1862bb L |
3595 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
3596 | bfd_link_pic (info), | |
3597 | h) | |
3598 | || (bfd_link_pic (info) | |
cf869cce | 3599 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
5056ba1d L |
3600 | || ((ELF_ST_VISIBILITY (h->other) |
3601 | || resolved_to_zero) | |
cf869cce | 3602 | && h->root.type == bfd_link_hash_undefweak)) |
252b5132 | 3603 | { |
cf869cce NC |
3604 | /* This is actually a static link, or it is a |
3605 | -Bsymbolic link and the symbol is defined | |
3606 | locally, or the symbol was forced to be local | |
325e58c7 | 3607 | because of a version file. We must initialize |
cf869cce NC |
3608 | this entry in the global offset table. Since |
3609 | the offset must always be a multiple of 4, we | |
3610 | use the least significant bit to record whether | |
3611 | we have initialized it already. | |
3612 | ||
3613 | When doing a dynamic link, we create a .rela.got | |
3614 | relocation entry to initialize the value. This | |
3615 | is done in the finish_dynamic_symbol routine. */ | |
3616 | ||
325e58c7 NC |
3617 | elf_m68k_init_got_entry_static (info, |
3618 | output_bfd, | |
3619 | r_type, | |
3620 | sgot, | |
3621 | off, | |
3622 | relocation); | |
cf869cce | 3623 | |
7fb9f789 | 3624 | *off_ptr |= 1; |
252b5132 | 3625 | } |
cf869cce NC |
3626 | else |
3627 | unresolved_reloc = FALSE; | |
252b5132 | 3628 | } |
0e1862bb | 3629 | else if (bfd_link_pic (info)) /* && h == NULL */ |
325e58c7 | 3630 | /* Process local symbol during dynamic link. */ |
252b5132 | 3631 | { |
ce558b89 AM |
3632 | srela = elf_hash_table (info)->srelgot; |
3633 | BFD_ASSERT (srela != NULL); | |
cf869cce | 3634 | |
325e58c7 NC |
3635 | elf_m68k_init_got_entry_local_shared (info, |
3636 | output_bfd, | |
3637 | r_type, | |
3638 | sgot, | |
3639 | off, | |
3640 | relocation, | |
3641 | srela); | |
cf869cce NC |
3642 | |
3643 | *off_ptr |= 1; | |
3644 | } | |
0e1862bb | 3645 | else /* h == NULL && !bfd_link_pic (info) */ |
cf869cce | 3646 | { |
325e58c7 NC |
3647 | elf_m68k_init_got_entry_static (info, |
3648 | output_bfd, | |
3649 | r_type, | |
3650 | sgot, | |
3651 | off, | |
3652 | relocation); | |
252b5132 | 3653 | |
7fb9f789 | 3654 | *off_ptr |= 1; |
252b5132 RH |
3655 | } |
3656 | } | |
3657 | ||
cf869cce NC |
3658 | /* We don't use elf_m68k_reloc_got_type in the condition below |
3659 | because this is the only place where difference between | |
3660 | R_68K_GOTx and R_68K_GOTxO relocations matters. */ | |
3661 | if (r_type == R_68K_GOT32O | |
252b5132 | 3662 | || r_type == R_68K_GOT16O |
cf869cce NC |
3663 | || r_type == R_68K_GOT8O |
3664 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32 | |
3665 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32 | |
3666 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32) | |
252b5132 | 3667 | { |
7fb9f789 NC |
3668 | /* GOT pointer is adjusted to point to the start/middle |
3669 | of local GOT. Adjust the offset accordingly. */ | |
3670 | BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p | |
3671 | || off >= got->offset); | |
3672 | ||
3673 | if (elf_m68k_hash_table (info)->local_gp_p) | |
3674 | relocation = off - got->offset; | |
3675 | else | |
3676 | { | |
3677 | BFD_ASSERT (got->offset == 0); | |
3678 | relocation = sgot->output_offset + off; | |
3679 | } | |
3680 | ||
252b5132 RH |
3681 | /* This relocation does not use the addend. */ |
3682 | rel->r_addend = 0; | |
3683 | } | |
3684 | else | |
7fb9f789 NC |
3685 | relocation = (sgot->output_section->vma + sgot->output_offset |
3686 | + off); | |
252b5132 RH |
3687 | } |
3688 | break; | |
3689 | ||
cf869cce NC |
3690 | case R_68K_TLS_LDO32: |
3691 | case R_68K_TLS_LDO16: | |
3692 | case R_68K_TLS_LDO8: | |
3693 | relocation -= dtpoff_base (info); | |
3694 | break; | |
3695 | ||
3696 | case R_68K_TLS_LE32: | |
3697 | case R_68K_TLS_LE16: | |
3698 | case R_68K_TLS_LE8: | |
3cbc1e5e | 3699 | if (bfd_link_dll (info)) |
cf869cce | 3700 | { |
4eca0228 | 3701 | _bfd_error_handler |
695344c0 | 3702 | /* xgettext:c-format */ |
2dcf00ce AM |
3703 | (_("%pB(%pA+%#" PRIx64 "): " |
3704 | "%s relocation not permitted in shared object"), | |
3705 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
3706 | howto->name); | |
cf869cce NC |
3707 | |
3708 | return FALSE; | |
3709 | } | |
3710 | else | |
325e58c7 | 3711 | relocation -= tpoff_base (info); |
cf869cce NC |
3712 | |
3713 | break; | |
3714 | ||
252b5132 RH |
3715 | case R_68K_PLT8: |
3716 | case R_68K_PLT16: | |
3717 | case R_68K_PLT32: | |
3718 | /* Relocation is to the entry for this symbol in the | |
3719 | procedure linkage table. */ | |
3720 | ||
3721 | /* Resolve a PLTxx reloc against a local symbol directly, | |
3722 | without using the procedure linkage table. */ | |
3723 | if (h == NULL) | |
3724 | break; | |
3725 | ||
3726 | if (h->plt.offset == (bfd_vma) -1 | |
3727 | || !elf_hash_table (info)->dynamic_sections_created) | |
3728 | { | |
3729 | /* We didn't make a PLT entry for this symbol. This | |
3730 | happens when statically linking PIC code, or when | |
3731 | using -Bsymbolic. */ | |
3732 | break; | |
3733 | } | |
3734 | ||
ce558b89 AM |
3735 | splt = elf_hash_table (info)->splt; |
3736 | BFD_ASSERT (splt != NULL); | |
252b5132 RH |
3737 | |
3738 | relocation = (splt->output_section->vma | |
3739 | + splt->output_offset | |
3740 | + h->plt.offset); | |
44f745a6 | 3741 | unresolved_reloc = FALSE; |
252b5132 RH |
3742 | break; |
3743 | ||
3744 | case R_68K_PLT8O: | |
3745 | case R_68K_PLT16O: | |
3746 | case R_68K_PLT32O: | |
3747 | /* Relocation is the offset of the entry for this symbol in | |
3748 | the procedure linkage table. */ | |
3749 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
3750 | ||
ce558b89 AM |
3751 | splt = elf_hash_table (info)->splt; |
3752 | BFD_ASSERT (splt != NULL); | |
252b5132 RH |
3753 | |
3754 | relocation = h->plt.offset; | |
44f745a6 | 3755 | unresolved_reloc = FALSE; |
252b5132 RH |
3756 | |
3757 | /* This relocation does not use the addend. */ | |
3758 | rel->r_addend = 0; | |
3759 | ||
3760 | break; | |
3761 | ||
252b5132 RH |
3762 | case R_68K_8: |
3763 | case R_68K_16: | |
3764 | case R_68K_32: | |
2516a1ee AS |
3765 | case R_68K_PC8: |
3766 | case R_68K_PC16: | |
3767 | case R_68K_PC32: | |
0e1862bb | 3768 | if (bfd_link_pic (info) |
cf35638d | 3769 | && r_symndx != STN_UNDEF |
252b5132 | 3770 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f | 3771 | && (h == NULL |
5056ba1d L |
3772 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
3773 | && !resolved_to_zero) | |
d2ff124f | 3774 | || h->root.type != bfd_link_hash_undefweak) |
252b5132 RH |
3775 | && ((r_type != R_68K_PC8 |
3776 | && r_type != R_68K_PC16 | |
3777 | && r_type != R_68K_PC32) | |
2516a1ee | 3778 | || !SYMBOL_CALLS_LOCAL (info, h))) |
252b5132 RH |
3779 | { |
3780 | Elf_Internal_Rela outrel; | |
947216bf | 3781 | bfd_byte *loc; |
b34976b6 | 3782 | bfd_boolean skip, relocate; |
252b5132 RH |
3783 | |
3784 | /* When generating a shared object, these relocations | |
3785 | are copied into the output file to be resolved at run | |
3786 | time. */ | |
3787 | ||
b34976b6 AM |
3788 | skip = FALSE; |
3789 | relocate = FALSE; | |
252b5132 | 3790 | |
c629eae0 JJ |
3791 | outrel.r_offset = |
3792 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3793 | rel->r_offset); | |
3794 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3795 | skip = TRUE; |
0bb2d96a | 3796 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3797 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3798 | outrel.r_offset += (input_section->output_section->vma |
3799 | + input_section->output_offset); | |
3800 | ||
3801 | if (skip) | |
0bb2d96a | 3802 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 3803 | else if (h != NULL |
d2ff124f AS |
3804 | && h->dynindx != -1 |
3805 | && (r_type == R_68K_PC8 | |
3806 | || r_type == R_68K_PC16 | |
3807 | || r_type == R_68K_PC32 | |
0e1862bb | 3808 | || !bfd_link_pic (info) |
a496fbc8 | 3809 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 3810 | || !h->def_regular)) |
252b5132 | 3811 | { |
252b5132 | 3812 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 3813 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
3814 | } |
3815 | else | |
3816 | { | |
d2ff124f | 3817 | /* This symbol is local, or marked to become local. */ |
74541ad4 AM |
3818 | outrel.r_addend = relocation + rel->r_addend; |
3819 | ||
252b5132 RH |
3820 | if (r_type == R_68K_32) |
3821 | { | |
b34976b6 | 3822 | relocate = TRUE; |
252b5132 | 3823 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
252b5132 RH |
3824 | } |
3825 | else | |
3826 | { | |
3827 | long indx; | |
3828 | ||
8517fae7 | 3829 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
3830 | indx = 0; |
3831 | else if (sec == NULL || sec->owner == NULL) | |
3832 | { | |
3833 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3834 | return FALSE; |
252b5132 RH |
3835 | } |
3836 | else | |
3837 | { | |
3838 | asection *osec; | |
3839 | ||
74541ad4 AM |
3840 | /* We are turning this relocation into one |
3841 | against a section symbol. It would be | |
3842 | proper to subtract the symbol's value, | |
3843 | osec->vma, from the emitted reloc addend, | |
3844 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
3845 | osec = sec->output_section; |
3846 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3847 | if (indx == 0) |
3848 | { | |
3849 | struct elf_link_hash_table *htab; | |
3850 | htab = elf_hash_table (info); | |
3851 | osec = htab->text_index_section; | |
3852 | indx = elf_section_data (osec)->dynindx; | |
3853 | } | |
3854 | BFD_ASSERT (indx != 0); | |
252b5132 RH |
3855 | } |
3856 | ||
252b5132 | 3857 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
3858 | } |
3859 | } | |
3860 | ||
d2ff124f AS |
3861 | sreloc = elf_section_data (input_section)->sreloc; |
3862 | if (sreloc == NULL) | |
3863 | abort (); | |
3864 | ||
947216bf AM |
3865 | loc = sreloc->contents; |
3866 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3867 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
3868 | |
3869 | /* This reloc will be computed at runtime, so there's no | |
07d6d2b8 AM |
3870 | need to do anything now, except for R_68K_32 |
3871 | relocations that have been turned into | |
3872 | R_68K_RELATIVE. */ | |
252b5132 RH |
3873 | if (!relocate) |
3874 | continue; | |
3875 | } | |
3876 | ||
3877 | break; | |
3878 | ||
3879 | case R_68K_GNU_VTINHERIT: | |
3880 | case R_68K_GNU_VTENTRY: | |
3881 | /* These are no-ops in the end. */ | |
3882 | continue; | |
3883 | ||
3884 | default: | |
3885 | break; | |
3886 | } | |
3887 | ||
44f745a6 AS |
3888 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3889 | because such sections are not SEC_ALLOC and thus ld.so will | |
3890 | not process them. */ | |
3891 | if (unresolved_reloc | |
3892 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
3893 | && h->def_dynamic) |
3894 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3895 | rel->r_offset) != (bfd_vma) -1) | |
44f745a6 | 3896 | { |
4eca0228 | 3897 | _bfd_error_handler |
695344c0 | 3898 | /* xgettext:c-format */ |
2dcf00ce AM |
3899 | (_("%pB(%pA+%#" PRIx64 "): " |
3900 | "unresolvable %s relocation against symbol `%s'"), | |
d003868e AM |
3901 | input_bfd, |
3902 | input_section, | |
2dcf00ce | 3903 | (uint64_t) rel->r_offset, |
843fe662 | 3904 | howto->name, |
44f745a6 AS |
3905 | h->root.root.string); |
3906 | return FALSE; | |
3907 | } | |
3908 | ||
cf35638d | 3909 | if (r_symndx != STN_UNDEF |
cf869cce NC |
3910 | && r_type != R_68K_NONE |
3911 | && (h == NULL | |
3912 | || h->root.type == bfd_link_hash_defined | |
3913 | || h->root.type == bfd_link_hash_defweak)) | |
3914 | { | |
3915 | char sym_type; | |
3916 | ||
3917 | sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type; | |
3918 | ||
3919 | if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS)) | |
3920 | { | |
3921 | const char *name; | |
3922 | ||
3923 | if (h != NULL) | |
3924 | name = h->root.root.string; | |
3925 | else | |
3926 | { | |
3927 | name = (bfd_elf_string_from_elf_section | |
3928 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3929 | if (name == NULL || *name == '\0') | |
3930 | name = bfd_section_name (input_bfd, sec); | |
3931 | } | |
3932 | ||
4eca0228 | 3933 | _bfd_error_handler |
cf869cce | 3934 | ((sym_type == STT_TLS |
695344c0 | 3935 | /* xgettext:c-format */ |
2dcf00ce | 3936 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 3937 | /* xgettext:c-format */ |
2dcf00ce | 3938 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
cf869cce NC |
3939 | input_bfd, |
3940 | input_section, | |
2dcf00ce | 3941 | (uint64_t) rel->r_offset, |
cf869cce NC |
3942 | howto->name, |
3943 | name); | |
3944 | } | |
3945 | } | |
3946 | ||
252b5132 RH |
3947 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3948 | contents, rel->r_offset, | |
3949 | relocation, rel->r_addend); | |
3950 | ||
3951 | if (r != bfd_reloc_ok) | |
3952 | { | |
44f745a6 AS |
3953 | const char *name; |
3954 | ||
3955 | if (h != NULL) | |
3956 | name = h->root.root.string; | |
3957 | else | |
252b5132 | 3958 | { |
44f745a6 AS |
3959 | name = bfd_elf_string_from_elf_section (input_bfd, |
3960 | symtab_hdr->sh_link, | |
3961 | sym->st_name); | |
3962 | if (name == NULL) | |
3963 | return FALSE; | |
3964 | if (*name == '\0') | |
3965 | name = bfd_section_name (input_bfd, sec); | |
3966 | } | |
252b5132 | 3967 | |
44f745a6 | 3968 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3969 | (*info->callbacks->reloc_overflow) |
3970 | (info, (h ? &h->root : NULL), name, howto->name, | |
3971 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
44f745a6 AS |
3972 | else |
3973 | { | |
4eca0228 | 3974 | _bfd_error_handler |
695344c0 | 3975 | /* xgettext:c-format */ |
2dcf00ce | 3976 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 3977 | input_bfd, input_section, |
2dcf00ce | 3978 | (uint64_t) rel->r_offset, name, (int) r); |
44f745a6 | 3979 | return FALSE; |
252b5132 RH |
3980 | } |
3981 | } | |
3982 | } | |
3983 | ||
b34976b6 | 3984 | return TRUE; |
252b5132 RH |
3985 | } |
3986 | ||
cc3e26be RS |
3987 | /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET |
3988 | into section SEC. */ | |
3989 | ||
3990 | static void | |
3991 | elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value) | |
3992 | { | |
3993 | /* Make VALUE PC-relative. */ | |
3994 | value -= sec->output_section->vma + offset; | |
3995 | ||
3996 | /* Apply any in-place addend. */ | |
3997 | value += bfd_get_32 (sec->owner, sec->contents + offset); | |
3998 | ||
3999 | bfd_put_32 (sec->owner, value, sec->contents + offset); | |
4000 | } | |
4001 | ||
252b5132 RH |
4002 | /* Finish up dynamic symbol handling. We set the contents of various |
4003 | dynamic sections here. */ | |
4004 | ||
b34976b6 | 4005 | static bfd_boolean |
2c3fc389 NC |
4006 | elf_m68k_finish_dynamic_symbol (bfd *output_bfd, |
4007 | struct bfd_link_info *info, | |
4008 | struct elf_link_hash_entry *h, | |
4009 | Elf_Internal_Sym *sym) | |
252b5132 RH |
4010 | { |
4011 | bfd *dynobj; | |
4012 | ||
4013 | dynobj = elf_hash_table (info)->dynobj; | |
4014 | ||
4015 | if (h->plt.offset != (bfd_vma) -1) | |
4016 | { | |
cc3e26be | 4017 | const struct elf_m68k_plt_info *plt_info; |
252b5132 RH |
4018 | asection *splt; |
4019 | asection *sgot; | |
4020 | asection *srela; | |
4021 | bfd_vma plt_index; | |
4022 | bfd_vma got_offset; | |
4023 | Elf_Internal_Rela rela; | |
947216bf | 4024 | bfd_byte *loc; |
252b5132 RH |
4025 | |
4026 | /* This symbol has an entry in the procedure linkage table. Set | |
4027 | it up. */ | |
4028 | ||
4029 | BFD_ASSERT (h->dynindx != -1); | |
4030 | ||
cc3e26be | 4031 | plt_info = elf_m68k_hash_table (info)->plt_info; |
ce558b89 AM |
4032 | splt = elf_hash_table (info)->splt; |
4033 | sgot = elf_hash_table (info)->sgotplt; | |
4034 | srela = elf_hash_table (info)->srelplt; | |
252b5132 RH |
4035 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
4036 | ||
4037 | /* Get the index in the procedure linkage table which | |
4038 | corresponds to this symbol. This is the index of this symbol | |
4039 | in all the symbols for which we are making plt entries. The | |
4040 | first entry in the procedure linkage table is reserved. */ | |
cc3e26be | 4041 | plt_index = (h->plt.offset / plt_info->size) - 1; |
252b5132 RH |
4042 | |
4043 | /* Get the offset into the .got table of the entry that | |
4044 | corresponds to this function. Each .got entry is 4 bytes. | |
4045 | The first three are reserved. */ | |
4046 | got_offset = (plt_index + 3) * 4; | |
4047 | ||
cc3e26be RS |
4048 | memcpy (splt->contents + h->plt.offset, |
4049 | plt_info->symbol_entry, | |
4050 | plt_info->size); | |
4051 | ||
4052 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got, | |
4053 | (sgot->output_section->vma | |
4054 | + sgot->output_offset | |
4055 | + got_offset)); | |
252b5132 RH |
4056 | |
4057 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
cc3e26be RS |
4058 | splt->contents |
4059 | + h->plt.offset | |
4060 | + plt_info->symbol_resolve_entry + 2); | |
4061 | ||
4062 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt, | |
4063 | splt->output_section->vma); | |
252b5132 RH |
4064 | |
4065 | /* Fill in the entry in the global offset table. */ | |
4066 | bfd_put_32 (output_bfd, | |
4067 | (splt->output_section->vma | |
4068 | + splt->output_offset | |
4069 | + h->plt.offset | |
cc3e26be | 4070 | + plt_info->symbol_resolve_entry), |
252b5132 RH |
4071 | sgot->contents + got_offset); |
4072 | ||
4073 | /* Fill in the entry in the .rela.plt section. */ | |
4074 | rela.r_offset = (sgot->output_section->vma | |
4075 | + sgot->output_offset | |
4076 | + got_offset); | |
4077 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
4078 | rela.r_addend = 0; | |
947216bf AM |
4079 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
4080 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 4081 | |
f5385ebf | 4082 | if (!h->def_regular) |
252b5132 RH |
4083 | { |
4084 | /* Mark the symbol as undefined, rather than as defined in | |
4085 | the .plt section. Leave the value alone. */ | |
4086 | sym->st_shndx = SHN_UNDEF; | |
4087 | } | |
4088 | } | |
4089 | ||
7fb9f789 | 4090 | if (elf_m68k_hash_entry (h)->glist != NULL) |
252b5132 RH |
4091 | { |
4092 | asection *sgot; | |
4093 | asection *srela; | |
7fb9f789 | 4094 | struct elf_m68k_got_entry *got_entry; |
252b5132 RH |
4095 | |
4096 | /* This symbol has an entry in the global offset table. Set it | |
4097 | up. */ | |
4098 | ||
ce558b89 AM |
4099 | sgot = elf_hash_table (info)->sgot; |
4100 | srela = elf_hash_table (info)->srelgot; | |
252b5132 RH |
4101 | BFD_ASSERT (sgot != NULL && srela != NULL); |
4102 | ||
7fb9f789 NC |
4103 | got_entry = elf_m68k_hash_entry (h)->glist; |
4104 | ||
4105 | while (got_entry != NULL) | |
252b5132 | 4106 | { |
325e58c7 | 4107 | enum elf_m68k_reloc_type r_type; |
cf869cce NC |
4108 | bfd_vma got_entry_offset; |
4109 | ||
325e58c7 | 4110 | r_type = got_entry->key_.type; |
cf869cce | 4111 | got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1; |
7fb9f789 | 4112 | |
7fb9f789 NC |
4113 | /* If this is a -Bsymbolic link, and the symbol is defined |
4114 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4115 | the symbol was forced to be local because of a version file. | |
cf869cce | 4116 | The entry in the global offset table already have been |
7fb9f789 | 4117 | initialized in the relocate_section function. */ |
0e1862bb | 4118 | if (bfd_link_pic (info) |
2516a1ee | 4119 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7fb9f789 | 4120 | { |
325e58c7 | 4121 | bfd_vma relocation; |
cf869cce | 4122 | |
325e58c7 NC |
4123 | relocation = bfd_get_signed_32 (output_bfd, |
4124 | (sgot->contents | |
4125 | + got_entry_offset)); | |
4126 | ||
4127 | /* Undo TP bias. */ | |
4128 | switch (elf_m68k_reloc_got_type (r_type)) | |
cf869cce NC |
4129 | { |
4130 | case R_68K_GOT32O: | |
325e58c7 | 4131 | case R_68K_TLS_LDM32: |
cf869cce NC |
4132 | break; |
4133 | ||
4134 | case R_68K_TLS_GD32: | |
93b3ac75 AS |
4135 | /* The value for this relocation is actually put in |
4136 | the second GOT slot. */ | |
4137 | relocation = bfd_get_signed_32 (output_bfd, | |
4138 | (sgot->contents | |
4139 | + got_entry_offset + 4)); | |
325e58c7 | 4140 | relocation += dtpoff_base (info); |
cf869cce NC |
4141 | break; |
4142 | ||
4143 | case R_68K_TLS_IE32: | |
325e58c7 | 4144 | relocation += tpoff_base (info); |
cf869cce NC |
4145 | break; |
4146 | ||
4147 | default: | |
4148 | BFD_ASSERT (FALSE); | |
cf869cce NC |
4149 | } |
4150 | ||
325e58c7 NC |
4151 | elf_m68k_init_got_entry_local_shared (info, |
4152 | output_bfd, | |
4153 | r_type, | |
4154 | sgot, | |
4155 | got_entry_offset, | |
4156 | relocation, | |
4157 | srela); | |
7fb9f789 NC |
4158 | } |
4159 | else | |
4160 | { | |
325e58c7 NC |
4161 | Elf_Internal_Rela rela; |
4162 | ||
cf869cce NC |
4163 | /* Put zeros to GOT slots that will be initialized |
4164 | at run-time. */ | |
4165 | { | |
4166 | bfd_vma n_slots; | |
4167 | ||
4168 | n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type); | |
4169 | while (n_slots--) | |
4170 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
4171 | (sgot->contents + got_entry_offset | |
4172 | + 4 * n_slots)); | |
4173 | } | |
4174 | ||
7fb9f789 | 4175 | rela.r_addend = 0; |
325e58c7 NC |
4176 | rela.r_offset = (sgot->output_section->vma |
4177 | + sgot->output_offset | |
4178 | + got_entry_offset); | |
252b5132 | 4179 | |
325e58c7 | 4180 | switch (elf_m68k_reloc_got_type (r_type)) |
cf869cce NC |
4181 | { |
4182 | case R_68K_GOT32O: | |
4183 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); | |
4184 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4185 | break; | |
4186 | ||
4187 | case R_68K_TLS_GD32: | |
4188 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32); | |
4189 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4190 | ||
4191 | rela.r_offset += 4; | |
4192 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32); | |
4193 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4194 | break; | |
4195 | ||
4196 | case R_68K_TLS_IE32: | |
4197 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32); | |
4198 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4199 | break; | |
4200 | ||
4201 | default: | |
4202 | BFD_ASSERT (FALSE); | |
4203 | break; | |
4204 | } | |
4205 | } | |
7fb9f789 NC |
4206 | |
4207 | got_entry = got_entry->u.s2.next; | |
4208 | } | |
252b5132 RH |
4209 | } |
4210 | ||
f5385ebf | 4211 | if (h->needs_copy) |
252b5132 RH |
4212 | { |
4213 | asection *s; | |
4214 | Elf_Internal_Rela rela; | |
947216bf | 4215 | bfd_byte *loc; |
252b5132 RH |
4216 | |
4217 | /* This symbol needs a copy reloc. Set it up. */ | |
4218 | ||
4219 | BFD_ASSERT (h->dynindx != -1 | |
4220 | && (h->root.type == bfd_link_hash_defined | |
4221 | || h->root.type == bfd_link_hash_defweak)); | |
4222 | ||
3d4d4302 | 4223 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 RH |
4224 | BFD_ASSERT (s != NULL); |
4225 | ||
4226 | rela.r_offset = (h->root.u.def.value | |
4227 | + h->root.u.def.section->output_section->vma | |
4228 | + h->root.u.def.section->output_offset); | |
4229 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
4230 | rela.r_addend = 0; | |
947216bf AM |
4231 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
4232 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
4233 | } |
4234 | ||
b34976b6 | 4235 | return TRUE; |
252b5132 RH |
4236 | } |
4237 | ||
4238 | /* Finish up the dynamic sections. */ | |
4239 | ||
b34976b6 | 4240 | static bfd_boolean |
2c3fc389 | 4241 | elf_m68k_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
252b5132 RH |
4242 | { |
4243 | bfd *dynobj; | |
4244 | asection *sgot; | |
4245 | asection *sdyn; | |
4246 | ||
4247 | dynobj = elf_hash_table (info)->dynobj; | |
4248 | ||
ce558b89 | 4249 | sgot = elf_hash_table (info)->sgotplt; |
252b5132 | 4250 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 4251 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
4252 | |
4253 | if (elf_hash_table (info)->dynamic_sections_created) | |
4254 | { | |
4255 | asection *splt; | |
4256 | Elf32_External_Dyn *dyncon, *dynconend; | |
4257 | ||
ce558b89 | 4258 | splt = elf_hash_table (info)->splt; |
252b5132 RH |
4259 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4260 | ||
4261 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4262 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4263 | for (; dyncon < dynconend; dyncon++) |
4264 | { | |
4265 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4266 | asection *s; |
4267 | ||
4268 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4269 | ||
4270 | switch (dyn.d_tag) | |
4271 | { | |
4272 | default: | |
4273 | break; | |
4274 | ||
4275 | case DT_PLTGOT: | |
ce558b89 | 4276 | s = elf_hash_table (info)->sgotplt; |
252b5132 RH |
4277 | goto get_vma; |
4278 | case DT_JMPREL: | |
ce558b89 | 4279 | s = elf_hash_table (info)->srelplt; |
252b5132 | 4280 | get_vma: |
4ade44b7 | 4281 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
252b5132 RH |
4282 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4283 | break; | |
4284 | ||
4285 | case DT_PLTRELSZ: | |
ce558b89 | 4286 | s = elf_hash_table (info)->srelplt; |
eea6121a | 4287 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4288 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4289 | break; | |
252b5132 RH |
4290 | } |
4291 | } | |
4292 | ||
4293 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 4294 | if (splt->size > 0) |
252b5132 | 4295 | { |
cc3e26be RS |
4296 | const struct elf_m68k_plt_info *plt_info; |
4297 | ||
4298 | plt_info = elf_m68k_hash_table (info)->plt_info; | |
4299 | memcpy (splt->contents, plt_info->plt0_entry, plt_info->size); | |
4300 | ||
4301 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4, | |
4302 | (sgot->output_section->vma | |
4303 | + sgot->output_offset | |
4304 | + 4)); | |
4305 | ||
4306 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8, | |
4307 | (sgot->output_section->vma | |
4308 | + sgot->output_offset | |
4309 | + 8)); | |
4310 | ||
4311 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
4312 | = plt_info->size; | |
252b5132 | 4313 | } |
252b5132 RH |
4314 | } |
4315 | ||
4316 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4317 | if (sgot->size > 0) |
252b5132 RH |
4318 | { |
4319 | if (sdyn == NULL) | |
4320 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4321 | else | |
4322 | bfd_put_32 (output_bfd, | |
4323 | sdyn->output_section->vma + sdyn->output_offset, | |
4324 | sgot->contents); | |
4325 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4326 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4327 | } | |
4328 | ||
4329 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4330 | ||
b34976b6 | 4331 | return TRUE; |
252b5132 RH |
4332 | } |
4333 | ||
0752970e NC |
4334 | /* Given a .data section and a .emreloc in-memory section, store |
4335 | relocation information into the .emreloc section which can be | |
4336 | used at runtime to relocate the section. This is called by the | |
4337 | linker when the --embedded-relocs switch is used. This is called | |
4338 | after the add_symbols entry point has been called for all the | |
4339 | objects, and before the final_link entry point is called. */ | |
4340 | ||
b34976b6 | 4341 | bfd_boolean |
e6c7cdec TS |
4342 | bfd_m68k_elf32_create_embedded_relocs (bfd *abfd, struct bfd_link_info *info, |
4343 | asection *datasec, asection *relsec, | |
4344 | char **errmsg) | |
0752970e NC |
4345 | { |
4346 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
4347 | Elf_Internal_Sym *isymbuf = NULL; |
4348 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
4349 | Elf_Internal_Rela *irel, *irelend; |
4350 | bfd_byte *p; | |
dc810e39 | 4351 | bfd_size_type amt; |
0752970e | 4352 | |
0e1862bb | 4353 | BFD_ASSERT (! bfd_link_relocatable (info)); |
0752970e NC |
4354 | |
4355 | *errmsg = NULL; | |
4356 | ||
4357 | if (datasec->reloc_count == 0) | |
b34976b6 | 4358 | return TRUE; |
0752970e NC |
4359 | |
4360 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 4361 | |
0752970e | 4362 | /* Get a copy of the native relocations. */ |
45d6a902 | 4363 | internal_relocs = (_bfd_elf_link_read_relocs |
2c3fc389 | 4364 | (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL, |
0752970e NC |
4365 | info->keep_memory)); |
4366 | if (internal_relocs == NULL) | |
4367 | goto error_return; | |
0752970e | 4368 | |
dc810e39 AM |
4369 | amt = (bfd_size_type) datasec->reloc_count * 12; |
4370 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
4371 | if (relsec->contents == NULL) |
4372 | goto error_return; | |
4373 | ||
4374 | p = relsec->contents; | |
4375 | ||
4376 | irelend = internal_relocs + datasec->reloc_count; | |
4377 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
4378 | { | |
4379 | asection *targetsec; | |
4380 | ||
4381 | /* We are going to write a four byte longword into the runtime | |
4382 | reloc section. The longword will be the address in the data | |
4383 | section which must be relocated. It is followed by the name | |
4384 | of the target section NUL-padded or truncated to 8 | |
4385 | characters. */ | |
4386 | ||
4387 | /* We can only relocate absolute longword relocs at run time. */ | |
4388 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
4389 | { | |
0aa13fee | 4390 | *errmsg = _("unsupported relocation type"); |
0752970e NC |
4391 | bfd_set_error (bfd_error_bad_value); |
4392 | goto error_return; | |
4393 | } | |
4394 | ||
4395 | /* Get the target section referred to by the reloc. */ | |
4396 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
4397 | { | |
0752970e | 4398 | /* A local symbol. */ |
6cdc0ccc AM |
4399 | Elf_Internal_Sym *isym; |
4400 | ||
4401 | /* Read this BFD's local symbols if we haven't done so already. */ | |
4402 | if (isymbuf == NULL) | |
4403 | { | |
4404 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4405 | if (isymbuf == NULL) | |
4406 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
4407 | symtab_hdr->sh_info, 0, | |
4408 | NULL, NULL, NULL); | |
4409 | if (isymbuf == NULL) | |
4410 | goto error_return; | |
4411 | } | |
0752970e | 4412 | |
6cdc0ccc AM |
4413 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
4414 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
4415 | } |
4416 | else | |
4417 | { | |
4418 | unsigned long indx; | |
4419 | struct elf_link_hash_entry *h; | |
4420 | ||
4421 | /* An external symbol. */ | |
4422 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
4423 | h = elf_sym_hashes (abfd)[indx]; | |
4424 | BFD_ASSERT (h != NULL); | |
4425 | if (h->root.type == bfd_link_hash_defined | |
4426 | || h->root.type == bfd_link_hash_defweak) | |
4427 | targetsec = h->root.u.def.section; | |
4428 | else | |
4429 | targetsec = NULL; | |
4430 | } | |
4431 | ||
4432 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
4433 | memset (p + 4, 0, 8); | |
4434 | if (targetsec != NULL) | |
f075ee0c | 4435 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 4436 | } |
c3668558 | 4437 | |
6cdc0ccc AM |
4438 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
4439 | free (isymbuf); | |
4440 | if (internal_relocs != NULL | |
4441 | && elf_section_data (datasec)->relocs != internal_relocs) | |
4442 | free (internal_relocs); | |
b34976b6 | 4443 | return TRUE; |
0752970e NC |
4444 | |
4445 | error_return: | |
6cdc0ccc AM |
4446 | if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) |
4447 | free (isymbuf); | |
4448 | if (internal_relocs != NULL | |
4449 | && elf_section_data (datasec)->relocs != internal_relocs) | |
4450 | free (internal_relocs); | |
b34976b6 | 4451 | return FALSE; |
0752970e NC |
4452 | } |
4453 | ||
7fb9f789 NC |
4454 | /* Set target options. */ |
4455 | ||
4456 | void | |
4457 | bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling) | |
4458 | { | |
4459 | struct elf_m68k_link_hash_table *htab; | |
b1345da3 MR |
4460 | bfd_boolean use_neg_got_offsets_p; |
4461 | bfd_boolean allow_multigot_p; | |
4462 | bfd_boolean local_gp_p; | |
7fb9f789 NC |
4463 | |
4464 | switch (got_handling) | |
4465 | { | |
4466 | case 0: | |
4467 | /* --got=single. */ | |
b1345da3 MR |
4468 | local_gp_p = FALSE; |
4469 | use_neg_got_offsets_p = FALSE; | |
4470 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4471 | break; |
4472 | ||
4473 | case 1: | |
4474 | /* --got=negative. */ | |
b1345da3 MR |
4475 | local_gp_p = TRUE; |
4476 | use_neg_got_offsets_p = TRUE; | |
4477 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4478 | break; |
4479 | ||
4480 | case 2: | |
4481 | /* --got=multigot. */ | |
b1345da3 MR |
4482 | local_gp_p = TRUE; |
4483 | use_neg_got_offsets_p = TRUE; | |
4484 | allow_multigot_p = TRUE; | |
7fb9f789 NC |
4485 | break; |
4486 | ||
4487 | default: | |
4488 | BFD_ASSERT (FALSE); | |
b1345da3 MR |
4489 | return; |
4490 | } | |
4491 | ||
4492 | htab = elf_m68k_hash_table (info); | |
4493 | if (htab != NULL) | |
4494 | { | |
4495 | htab->local_gp_p = local_gp_p; | |
4496 | htab->use_neg_got_offsets_p = use_neg_got_offsets_p; | |
4497 | htab->allow_multigot_p = allow_multigot_p; | |
7fb9f789 NC |
4498 | } |
4499 | } | |
4500 | ||
aa91b392 | 4501 | static enum elf_reloc_type_class |
7e612e98 AM |
4502 | elf32_m68k_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4503 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4504 | const Elf_Internal_Rela *rela) | |
aa91b392 | 4505 | { |
f51e552e | 4506 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
4507 | { |
4508 | case R_68K_RELATIVE: | |
4509 | return reloc_class_relative; | |
4510 | case R_68K_JMP_SLOT: | |
4511 | return reloc_class_plt; | |
4512 | case R_68K_COPY: | |
4513 | return reloc_class_copy; | |
4514 | default: | |
4515 | return reloc_class_normal; | |
4516 | } | |
4517 | } | |
4518 | ||
1715e0e3 AS |
4519 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4520 | or (bfd_vma) -1 if it should not be included. */ | |
4521 | ||
4522 | static bfd_vma | |
4523 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
4524 | const arelent *rel ATTRIBUTE_UNUSED) | |
4525 | { | |
cc3e26be | 4526 | return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size; |
1715e0e3 AS |
4527 | } |
4528 | ||
8bbeae90 AS |
4529 | /* Support for core dump NOTE sections. */ |
4530 | ||
4531 | static bfd_boolean | |
4532 | elf_m68k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
4533 | { | |
4534 | int offset; | |
4535 | size_t size; | |
4536 | ||
4537 | switch (note->descsz) | |
4538 | { | |
4539 | default: | |
4540 | return FALSE; | |
4541 | ||
4542 | case 154: /* Linux/m68k */ | |
4543 | /* pr_cursig */ | |
228e534f | 4544 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
8bbeae90 AS |
4545 | |
4546 | /* pr_pid */ | |
228e534f | 4547 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); |
8bbeae90 AS |
4548 | |
4549 | /* pr_reg */ | |
4550 | offset = 70; | |
4551 | size = 80; | |
4552 | ||
4553 | break; | |
4554 | } | |
4555 | ||
4556 | /* Make a ".reg/999" section. */ | |
4557 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
4558 | size, note->descpos + offset); | |
4559 | } | |
4560 | ||
4561 | static bfd_boolean | |
4562 | elf_m68k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
4563 | { | |
4564 | switch (note->descsz) | |
4565 | { | |
4566 | default: | |
4567 | return FALSE; | |
4568 | ||
4569 | case 124: /* Linux/m68k elf_prpsinfo. */ | |
228e534f | 4570 | elf_tdata (abfd)->core->pid |
8bbeae90 | 4571 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 4572 | elf_tdata (abfd)->core->program |
8bbeae90 | 4573 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 4574 | elf_tdata (abfd)->core->command |
8bbeae90 AS |
4575 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
4576 | } | |
4577 | ||
4578 | /* Note that for some reason, a spurious space is tacked | |
4579 | onto the end of the args in some (at least one anyway) | |
4580 | implementations, so strip it off if it exists. */ | |
4581 | { | |
228e534f | 4582 | char *command = elf_tdata (abfd)->core->command; |
8bbeae90 AS |
4583 | int n = strlen (command); |
4584 | ||
4585 | if (n > 0 && command[n - 1] == ' ') | |
4586 | command[n - 1] = '\0'; | |
4587 | } | |
4588 | ||
4589 | return TRUE; | |
4590 | } | |
4591 | ||
6d00b590 | 4592 | #define TARGET_BIG_SYM m68k_elf32_vec |
252b5132 RH |
4593 | #define TARGET_BIG_NAME "elf32-m68k" |
4594 | #define ELF_MACHINE_CODE EM_68K | |
4595 | #define ELF_MAXPAGESIZE 0x2000 | |
4596 | #define elf_backend_create_dynamic_sections \ | |
4597 | _bfd_elf_create_dynamic_sections | |
4598 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4599 | elf_m68k_link_hash_table_create | |
7fb9f789 | 4600 | #define bfd_elf32_bfd_final_link bfd_elf_final_link |
252b5132 RH |
4601 | |
4602 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
cc3e26be RS |
4603 | #define elf_backend_always_size_sections \ |
4604 | elf_m68k_always_size_sections | |
252b5132 RH |
4605 | #define elf_backend_adjust_dynamic_symbol \ |
4606 | elf_m68k_adjust_dynamic_symbol | |
4607 | #define elf_backend_size_dynamic_sections \ | |
4608 | elf_m68k_size_dynamic_sections | |
fc9f1df9 | 4609 | #define elf_backend_final_write_processing elf_m68k_final_write_processing |
74541ad4 | 4610 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
252b5132 RH |
4611 | #define elf_backend_relocate_section elf_m68k_relocate_section |
4612 | #define elf_backend_finish_dynamic_symbol \ | |
4613 | elf_m68k_finish_dynamic_symbol | |
4614 | #define elf_backend_finish_dynamic_sections \ | |
4615 | elf_m68k_finish_dynamic_sections | |
4616 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
7fb9f789 | 4617 | #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol |
9e1281c7 | 4618 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
07d6d2b8 | 4619 | elf32_m68k_merge_private_bfd_data |
9e1281c7 | 4620 | #define bfd_elf32_bfd_set_private_flags \ |
07d6d2b8 | 4621 | elf32_m68k_set_private_flags |
9e1281c7 | 4622 | #define bfd_elf32_bfd_print_private_bfd_data \ |
07d6d2b8 | 4623 | elf32_m68k_print_private_bfd_data |
aa91b392 | 4624 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 4625 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 4626 | #define elf_backend_object_p elf32_m68k_object_p |
8bbeae90 AS |
4627 | #define elf_backend_grok_prstatus elf_m68k_grok_prstatus |
4628 | #define elf_backend_grok_psinfo elf_m68k_grok_psinfo | |
9e1281c7 | 4629 | |
252b5132 | 4630 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 4631 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4632 | #define elf_backend_want_got_plt 1 |
4633 | #define elf_backend_plt_readonly 1 | |
4634 | #define elf_backend_want_plt_sym 0 | |
4635 | #define elf_backend_got_header_size 12 | |
b491616a | 4636 | #define elf_backend_rela_normal 1 |
64f52338 | 4637 | #define elf_backend_dtrel_excludes_plt 1 |
252b5132 | 4638 | |
a2f63b2e MR |
4639 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
4640 | ||
252b5132 | 4641 | #include "elf32-target.h" |