Commit | Line | Data |
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252b5132 | 1 | /* Motorola 68k series support for 32-bit ELF |
b3adc24a | 2 | Copyright (C) 1993-2020 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" |
f5c5b7c1 AM |
28 | #include "cpu-m68k.h" |
29 | #include "elf32-m68k.h" | |
252b5132 | 30 | |
2c3fc389 NC |
31 | static bfd_boolean |
32 | elf_m68k_discard_copies (struct elf_link_hash_entry *, void *); | |
33 | ||
34 | static reloc_howto_type howto_table[] = | |
35 | { | |
07d6d2b8 AM |
36 | HOWTO(R_68K_NONE, 0, 3, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", FALSE, 0, 0x00000000,FALSE), |
37 | HOWTO(R_68K_32, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", FALSE, 0, 0xffffffff,FALSE), | |
38 | HOWTO(R_68K_16, 0, 1,16, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", FALSE, 0, 0x0000ffff,FALSE), | |
39 | HOWTO(R_68K_8, 0, 0, 8, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", FALSE, 0, 0x000000ff,FALSE), | |
40 | HOWTO(R_68K_PC32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PC32", FALSE, 0, 0xffffffff,TRUE), | |
41 | HOWTO(R_68K_PC16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", FALSE, 0, 0x0000ffff,TRUE), | |
42 | HOWTO(R_68K_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", FALSE, 0, 0x000000ff,TRUE), | |
43 | HOWTO(R_68K_GOT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32", FALSE, 0, 0xffffffff,TRUE), | |
44 | HOWTO(R_68K_GOT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", FALSE, 0, 0x0000ffff,TRUE), | |
45 | HOWTO(R_68K_GOT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", FALSE, 0, 0x000000ff,TRUE), | |
46 | HOWTO(R_68K_GOT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_GOT32O", FALSE, 0, 0xffffffff,FALSE), | |
47 | HOWTO(R_68K_GOT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", FALSE, 0, 0x0000ffff,FALSE), | |
48 | HOWTO(R_68K_GOT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", FALSE, 0, 0x000000ff,FALSE), | |
49 | HOWTO(R_68K_PLT32, 0, 2,32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32", FALSE, 0, 0xffffffff,TRUE), | |
50 | HOWTO(R_68K_PLT16, 0, 1,16, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", FALSE, 0, 0x0000ffff,TRUE), | |
51 | HOWTO(R_68K_PLT8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", FALSE, 0, 0x000000ff,TRUE), | |
52 | HOWTO(R_68K_PLT32O, 0, 2,32, FALSE,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_PLT32O", FALSE, 0, 0xffffffff,FALSE), | |
53 | HOWTO(R_68K_PLT16O, 0, 1,16, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", FALSE, 0, 0x0000ffff,FALSE), | |
54 | HOWTO(R_68K_PLT8O, 0, 0, 8, FALSE,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", FALSE, 0, 0x000000ff,FALSE), | |
55 | HOWTO(R_68K_COPY, 0, 0, 0, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", FALSE, 0, 0xffffffff,FALSE), | |
56 | 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), | |
57 | 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), | |
58 | HOWTO(R_68K_RELATIVE, 0, 2,32, FALSE,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", FALSE, 0, 0xffffffff,FALSE), | |
ae9a127f | 59 | /* GNU extension to record C++ vtable hierarchy. */ |
252b5132 RH |
60 | HOWTO (R_68K_GNU_VTINHERIT, /* type */ |
61 | 0, /* rightshift */ | |
62 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
63 | 0, /* bitsize */ | |
b34976b6 | 64 | FALSE, /* pc_relative */ |
252b5132 RH |
65 | 0, /* bitpos */ |
66 | complain_overflow_dont, /* complain_on_overflow */ | |
67 | NULL, /* special_function */ | |
68 | "R_68K_GNU_VTINHERIT", /* name */ | |
b34976b6 | 69 | FALSE, /* partial_inplace */ |
252b5132 RH |
70 | 0, /* src_mask */ |
71 | 0, /* dst_mask */ | |
b34976b6 | 72 | FALSE), |
ae9a127f | 73 | /* GNU extension to record C++ vtable member usage. */ |
252b5132 RH |
74 | HOWTO (R_68K_GNU_VTENTRY, /* type */ |
75 | 0, /* rightshift */ | |
76 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
77 | 0, /* bitsize */ | |
b34976b6 | 78 | FALSE, /* pc_relative */ |
252b5132 RH |
79 | 0, /* bitpos */ |
80 | complain_overflow_dont, /* complain_on_overflow */ | |
81 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
82 | "R_68K_GNU_VTENTRY", /* name */ | |
b34976b6 | 83 | FALSE, /* partial_inplace */ |
252b5132 RH |
84 | 0, /* src_mask */ |
85 | 0, /* dst_mask */ | |
b34976b6 | 86 | FALSE), |
cf869cce NC |
87 | |
88 | /* TLS general dynamic variable reference. */ | |
89 | HOWTO (R_68K_TLS_GD32, /* type */ | |
90 | 0, /* rightshift */ | |
91 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
92 | 32, /* bitsize */ | |
93 | FALSE, /* pc_relative */ | |
94 | 0, /* bitpos */ | |
95 | complain_overflow_bitfield, /* complain_on_overflow */ | |
96 | bfd_elf_generic_reloc, /* special_function */ | |
97 | "R_68K_TLS_GD32", /* name */ | |
98 | FALSE, /* partial_inplace */ | |
99 | 0, /* src_mask */ | |
100 | 0xffffffff, /* dst_mask */ | |
101 | FALSE), /* pcrel_offset */ | |
102 | ||
103 | HOWTO (R_68K_TLS_GD16, /* type */ | |
104 | 0, /* rightshift */ | |
105 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
106 | 16, /* bitsize */ | |
107 | FALSE, /* pc_relative */ | |
108 | 0, /* bitpos */ | |
109 | complain_overflow_signed, /* complain_on_overflow */ | |
110 | bfd_elf_generic_reloc, /* special_function */ | |
111 | "R_68K_TLS_GD16", /* name */ | |
112 | FALSE, /* partial_inplace */ | |
113 | 0, /* src_mask */ | |
114 | 0x0000ffff, /* dst_mask */ | |
115 | FALSE), /* pcrel_offset */ | |
116 | ||
117 | HOWTO (R_68K_TLS_GD8, /* type */ | |
118 | 0, /* rightshift */ | |
119 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
120 | 8, /* bitsize */ | |
121 | FALSE, /* pc_relative */ | |
122 | 0, /* bitpos */ | |
123 | complain_overflow_signed, /* complain_on_overflow */ | |
124 | bfd_elf_generic_reloc, /* special_function */ | |
125 | "R_68K_TLS_GD8", /* name */ | |
126 | FALSE, /* partial_inplace */ | |
127 | 0, /* src_mask */ | |
128 | 0x000000ff, /* dst_mask */ | |
129 | FALSE), /* pcrel_offset */ | |
130 | ||
131 | /* TLS local dynamic variable reference. */ | |
132 | HOWTO (R_68K_TLS_LDM32, /* type */ | |
133 | 0, /* rightshift */ | |
134 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
135 | 32, /* bitsize */ | |
136 | FALSE, /* pc_relative */ | |
137 | 0, /* bitpos */ | |
138 | complain_overflow_bitfield, /* complain_on_overflow */ | |
139 | bfd_elf_generic_reloc, /* special_function */ | |
140 | "R_68K_TLS_LDM32", /* name */ | |
141 | FALSE, /* partial_inplace */ | |
142 | 0, /* src_mask */ | |
143 | 0xffffffff, /* dst_mask */ | |
144 | FALSE), /* pcrel_offset */ | |
145 | ||
146 | HOWTO (R_68K_TLS_LDM16, /* type */ | |
147 | 0, /* rightshift */ | |
148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
149 | 16, /* bitsize */ | |
150 | FALSE, /* pc_relative */ | |
151 | 0, /* bitpos */ | |
152 | complain_overflow_signed, /* complain_on_overflow */ | |
153 | bfd_elf_generic_reloc, /* special_function */ | |
154 | "R_68K_TLS_LDM16", /* name */ | |
155 | FALSE, /* partial_inplace */ | |
156 | 0, /* src_mask */ | |
157 | 0x0000ffff, /* dst_mask */ | |
158 | FALSE), /* pcrel_offset */ | |
159 | ||
160 | HOWTO (R_68K_TLS_LDM8, /* type */ | |
161 | 0, /* rightshift */ | |
162 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
163 | 8, /* bitsize */ | |
164 | FALSE, /* pc_relative */ | |
165 | 0, /* bitpos */ | |
166 | complain_overflow_signed, /* complain_on_overflow */ | |
167 | bfd_elf_generic_reloc, /* special_function */ | |
168 | "R_68K_TLS_LDM8", /* name */ | |
169 | FALSE, /* partial_inplace */ | |
170 | 0, /* src_mask */ | |
171 | 0x000000ff, /* dst_mask */ | |
172 | FALSE), /* pcrel_offset */ | |
173 | ||
174 | HOWTO (R_68K_TLS_LDO32, /* type */ | |
175 | 0, /* rightshift */ | |
176 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
177 | 32, /* bitsize */ | |
178 | FALSE, /* pc_relative */ | |
179 | 0, /* bitpos */ | |
180 | complain_overflow_bitfield, /* complain_on_overflow */ | |
181 | bfd_elf_generic_reloc, /* special_function */ | |
182 | "R_68K_TLS_LDO32", /* name */ | |
183 | FALSE, /* partial_inplace */ | |
184 | 0, /* src_mask */ | |
185 | 0xffffffff, /* dst_mask */ | |
186 | FALSE), /* pcrel_offset */ | |
187 | ||
188 | HOWTO (R_68K_TLS_LDO16, /* type */ | |
189 | 0, /* rightshift */ | |
190 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
191 | 16, /* bitsize */ | |
192 | FALSE, /* pc_relative */ | |
193 | 0, /* bitpos */ | |
194 | complain_overflow_signed, /* complain_on_overflow */ | |
195 | bfd_elf_generic_reloc, /* special_function */ | |
196 | "R_68K_TLS_LDO16", /* name */ | |
197 | FALSE, /* partial_inplace */ | |
198 | 0, /* src_mask */ | |
199 | 0x0000ffff, /* dst_mask */ | |
200 | FALSE), /* pcrel_offset */ | |
201 | ||
202 | HOWTO (R_68K_TLS_LDO8, /* type */ | |
203 | 0, /* rightshift */ | |
204 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
205 | 8, /* bitsize */ | |
206 | FALSE, /* pc_relative */ | |
207 | 0, /* bitpos */ | |
208 | complain_overflow_signed, /* complain_on_overflow */ | |
209 | bfd_elf_generic_reloc, /* special_function */ | |
210 | "R_68K_TLS_LDO8", /* name */ | |
211 | FALSE, /* partial_inplace */ | |
212 | 0, /* src_mask */ | |
213 | 0x000000ff, /* dst_mask */ | |
214 | FALSE), /* pcrel_offset */ | |
215 | ||
216 | /* TLS initial execution variable reference. */ | |
217 | HOWTO (R_68K_TLS_IE32, /* type */ | |
218 | 0, /* rightshift */ | |
219 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
220 | 32, /* bitsize */ | |
221 | FALSE, /* pc_relative */ | |
222 | 0, /* bitpos */ | |
223 | complain_overflow_bitfield, /* complain_on_overflow */ | |
224 | bfd_elf_generic_reloc, /* special_function */ | |
225 | "R_68K_TLS_IE32", /* name */ | |
226 | FALSE, /* partial_inplace */ | |
227 | 0, /* src_mask */ | |
228 | 0xffffffff, /* dst_mask */ | |
229 | FALSE), /* pcrel_offset */ | |
230 | ||
231 | HOWTO (R_68K_TLS_IE16, /* type */ | |
232 | 0, /* rightshift */ | |
233 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
234 | 16, /* bitsize */ | |
235 | FALSE, /* pc_relative */ | |
236 | 0, /* bitpos */ | |
237 | complain_overflow_signed, /* complain_on_overflow */ | |
238 | bfd_elf_generic_reloc, /* special_function */ | |
239 | "R_68K_TLS_IE16", /* name */ | |
240 | FALSE, /* partial_inplace */ | |
241 | 0, /* src_mask */ | |
242 | 0x0000ffff, /* dst_mask */ | |
243 | FALSE), /* pcrel_offset */ | |
244 | ||
245 | HOWTO (R_68K_TLS_IE8, /* type */ | |
246 | 0, /* rightshift */ | |
247 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
248 | 8, /* bitsize */ | |
249 | FALSE, /* pc_relative */ | |
250 | 0, /* bitpos */ | |
251 | complain_overflow_signed, /* complain_on_overflow */ | |
252 | bfd_elf_generic_reloc, /* special_function */ | |
253 | "R_68K_TLS_IE8", /* name */ | |
254 | FALSE, /* partial_inplace */ | |
255 | 0, /* src_mask */ | |
256 | 0x000000ff, /* dst_mask */ | |
257 | FALSE), /* pcrel_offset */ | |
258 | ||
259 | /* TLS local execution variable reference. */ | |
260 | HOWTO (R_68K_TLS_LE32, /* type */ | |
261 | 0, /* rightshift */ | |
262 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
263 | 32, /* bitsize */ | |
264 | FALSE, /* pc_relative */ | |
265 | 0, /* bitpos */ | |
266 | complain_overflow_bitfield, /* complain_on_overflow */ | |
267 | bfd_elf_generic_reloc, /* special_function */ | |
268 | "R_68K_TLS_LE32", /* name */ | |
269 | FALSE, /* partial_inplace */ | |
270 | 0, /* src_mask */ | |
271 | 0xffffffff, /* dst_mask */ | |
272 | FALSE), /* pcrel_offset */ | |
273 | ||
274 | HOWTO (R_68K_TLS_LE16, /* type */ | |
275 | 0, /* rightshift */ | |
276 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
277 | 16, /* bitsize */ | |
278 | FALSE, /* pc_relative */ | |
279 | 0, /* bitpos */ | |
280 | complain_overflow_signed, /* complain_on_overflow */ | |
281 | bfd_elf_generic_reloc, /* special_function */ | |
282 | "R_68K_TLS_LE16", /* name */ | |
283 | FALSE, /* partial_inplace */ | |
284 | 0, /* src_mask */ | |
285 | 0x0000ffff, /* dst_mask */ | |
286 | FALSE), /* pcrel_offset */ | |
287 | ||
288 | HOWTO (R_68K_TLS_LE8, /* type */ | |
289 | 0, /* rightshift */ | |
290 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
291 | 8, /* bitsize */ | |
292 | FALSE, /* pc_relative */ | |
293 | 0, /* bitpos */ | |
294 | complain_overflow_signed, /* complain_on_overflow */ | |
295 | bfd_elf_generic_reloc, /* special_function */ | |
296 | "R_68K_TLS_LE8", /* name */ | |
297 | FALSE, /* partial_inplace */ | |
298 | 0, /* src_mask */ | |
299 | 0x000000ff, /* dst_mask */ | |
300 | FALSE), /* pcrel_offset */ | |
301 | ||
302 | /* TLS GD/LD dynamic relocations. */ | |
303 | HOWTO (R_68K_TLS_DTPMOD32, /* type */ | |
304 | 0, /* rightshift */ | |
305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
306 | 32, /* bitsize */ | |
307 | FALSE, /* pc_relative */ | |
308 | 0, /* bitpos */ | |
309 | complain_overflow_dont, /* complain_on_overflow */ | |
310 | bfd_elf_generic_reloc, /* special_function */ | |
311 | "R_68K_TLS_DTPMOD32", /* name */ | |
312 | FALSE, /* partial_inplace */ | |
313 | 0, /* src_mask */ | |
314 | 0xffffffff, /* dst_mask */ | |
315 | FALSE), /* pcrel_offset */ | |
316 | ||
317 | HOWTO (R_68K_TLS_DTPREL32, /* type */ | |
318 | 0, /* rightshift */ | |
319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
320 | 32, /* bitsize */ | |
321 | FALSE, /* pc_relative */ | |
322 | 0, /* bitpos */ | |
323 | complain_overflow_dont, /* complain_on_overflow */ | |
324 | bfd_elf_generic_reloc, /* special_function */ | |
325 | "R_68K_TLS_DTPREL32", /* name */ | |
326 | FALSE, /* partial_inplace */ | |
327 | 0, /* src_mask */ | |
328 | 0xffffffff, /* dst_mask */ | |
329 | FALSE), /* pcrel_offset */ | |
330 | ||
331 | HOWTO (R_68K_TLS_TPREL32, /* type */ | |
332 | 0, /* rightshift */ | |
333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
334 | 32, /* bitsize */ | |
335 | FALSE, /* pc_relative */ | |
336 | 0, /* bitpos */ | |
337 | complain_overflow_dont, /* complain_on_overflow */ | |
338 | bfd_elf_generic_reloc, /* special_function */ | |
339 | "R_68K_TLS_TPREL32", /* name */ | |
340 | FALSE, /* partial_inplace */ | |
341 | 0, /* src_mask */ | |
342 | 0xffffffff, /* dst_mask */ | |
343 | FALSE), /* pcrel_offset */ | |
252b5132 RH |
344 | }; |
345 | ||
f3185997 | 346 | static bfd_boolean |
c86ad514 | 347 | rtype_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) |
252b5132 | 348 | { |
c86ad514 AS |
349 | unsigned int indx = ELF32_R_TYPE (dst->r_info); |
350 | ||
351 | if (indx >= (unsigned int) R_68K_max) | |
352 | { | |
695344c0 | 353 | /* xgettext:c-format */ |
0aa13fee AM |
354 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
355 | abfd, indx); | |
f3185997 NC |
356 | bfd_set_error (bfd_error_bad_value); |
357 | return FALSE; | |
c86ad514 AS |
358 | } |
359 | cache_ptr->howto = &howto_table[indx]; | |
f3185997 | 360 | return TRUE; |
252b5132 RH |
361 | } |
362 | ||
363 | #define elf_info_to_howto rtype_to_howto | |
364 | ||
365 | static const struct | |
366 | { | |
367 | bfd_reloc_code_real_type bfd_val; | |
368 | int elf_val; | |
cf869cce NC |
369 | } |
370 | reloc_map[] = | |
371 | { | |
252b5132 RH |
372 | { BFD_RELOC_NONE, R_68K_NONE }, |
373 | { BFD_RELOC_32, R_68K_32 }, | |
374 | { BFD_RELOC_16, R_68K_16 }, | |
375 | { BFD_RELOC_8, R_68K_8 }, | |
376 | { BFD_RELOC_32_PCREL, R_68K_PC32 }, | |
377 | { BFD_RELOC_16_PCREL, R_68K_PC16 }, | |
378 | { BFD_RELOC_8_PCREL, R_68K_PC8 }, | |
379 | { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 }, | |
380 | { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 }, | |
381 | { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 }, | |
382 | { BFD_RELOC_32_GOTOFF, R_68K_GOT32O }, | |
383 | { BFD_RELOC_16_GOTOFF, R_68K_GOT16O }, | |
384 | { BFD_RELOC_8_GOTOFF, R_68K_GOT8O }, | |
385 | { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 }, | |
386 | { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 }, | |
387 | { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 }, | |
388 | { BFD_RELOC_32_PLTOFF, R_68K_PLT32O }, | |
389 | { BFD_RELOC_16_PLTOFF, R_68K_PLT16O }, | |
390 | { BFD_RELOC_8_PLTOFF, R_68K_PLT8O }, | |
391 | { BFD_RELOC_NONE, R_68K_COPY }, | |
392 | { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT }, | |
393 | { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT }, | |
394 | { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE }, | |
395 | { BFD_RELOC_CTOR, R_68K_32 }, | |
396 | { BFD_RELOC_VTABLE_INHERIT, R_68K_GNU_VTINHERIT }, | |
397 | { BFD_RELOC_VTABLE_ENTRY, R_68K_GNU_VTENTRY }, | |
cf869cce NC |
398 | { BFD_RELOC_68K_TLS_GD32, R_68K_TLS_GD32 }, |
399 | { BFD_RELOC_68K_TLS_GD16, R_68K_TLS_GD16 }, | |
400 | { BFD_RELOC_68K_TLS_GD8, R_68K_TLS_GD8 }, | |
401 | { BFD_RELOC_68K_TLS_LDM32, R_68K_TLS_LDM32 }, | |
402 | { BFD_RELOC_68K_TLS_LDM16, R_68K_TLS_LDM16 }, | |
403 | { BFD_RELOC_68K_TLS_LDM8, R_68K_TLS_LDM8 }, | |
404 | { BFD_RELOC_68K_TLS_LDO32, R_68K_TLS_LDO32 }, | |
405 | { BFD_RELOC_68K_TLS_LDO16, R_68K_TLS_LDO16 }, | |
406 | { BFD_RELOC_68K_TLS_LDO8, R_68K_TLS_LDO8 }, | |
407 | { BFD_RELOC_68K_TLS_IE32, R_68K_TLS_IE32 }, | |
408 | { BFD_RELOC_68K_TLS_IE16, R_68K_TLS_IE16 }, | |
409 | { BFD_RELOC_68K_TLS_IE8, R_68K_TLS_IE8 }, | |
410 | { BFD_RELOC_68K_TLS_LE32, R_68K_TLS_LE32 }, | |
411 | { BFD_RELOC_68K_TLS_LE16, R_68K_TLS_LE16 }, | |
412 | { BFD_RELOC_68K_TLS_LE8, R_68K_TLS_LE8 }, | |
252b5132 RH |
413 | }; |
414 | ||
415 | static reloc_howto_type * | |
2c3fc389 NC |
416 | reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
417 | bfd_reloc_code_real_type code) | |
252b5132 RH |
418 | { |
419 | unsigned int i; | |
420 | for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++) | |
421 | { | |
422 | if (reloc_map[i].bfd_val == code) | |
423 | return &howto_table[reloc_map[i].elf_val]; | |
424 | } | |
425 | return 0; | |
426 | } | |
427 | ||
157090f7 AM |
428 | static reloc_howto_type * |
429 | reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
430 | { | |
431 | unsigned int i; | |
432 | ||
433 | for (i = 0; i < sizeof (howto_table) / sizeof (howto_table[0]); i++) | |
434 | if (howto_table[i].name != NULL | |
435 | && strcasecmp (howto_table[i].name, r_name) == 0) | |
436 | return &howto_table[i]; | |
437 | ||
438 | return NULL; | |
439 | } | |
440 | ||
252b5132 | 441 | #define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup |
157090f7 | 442 | #define bfd_elf32_bfd_reloc_name_lookup reloc_name_lookup |
252b5132 | 443 | #define ELF_ARCH bfd_arch_m68k |
ae95ffa6 | 444 | #define ELF_TARGET_ID M68K_ELF_DATA |
252b5132 RH |
445 | \f |
446 | /* Functions for the m68k ELF linker. */ | |
447 | ||
448 | /* The name of the dynamic interpreter. This is put in the .interp | |
449 | section. */ | |
450 | ||
451 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
452 | ||
cc3e26be RS |
453 | /* Describes one of the various PLT styles. */ |
454 | ||
455 | struct elf_m68k_plt_info | |
456 | { | |
457 | /* The size of each PLT entry. */ | |
458 | bfd_vma size; | |
459 | ||
460 | /* The template for the first PLT entry. */ | |
461 | const bfd_byte *plt0_entry; | |
462 | ||
463 | /* Offsets of fields in PLT0_ENTRY that require R_68K_PC32 relocations. | |
464 | The comments by each member indicate the value that the relocation | |
465 | is against. */ | |
466 | struct { | |
467 | unsigned int got4; /* .got + 4 */ | |
468 | unsigned int got8; /* .got + 8 */ | |
469 | } plt0_relocs; | |
470 | ||
471 | /* The template for a symbol's PLT entry. */ | |
472 | const bfd_byte *symbol_entry; | |
473 | ||
474 | /* Offsets of fields in SYMBOL_ENTRY that require R_68K_PC32 relocations. | |
475 | The comments by each member indicate the value that the relocation | |
476 | is against. */ | |
477 | struct { | |
478 | unsigned int got; /* the symbol's .got.plt entry */ | |
479 | unsigned int plt; /* .plt */ | |
480 | } symbol_relocs; | |
481 | ||
482 | /* The offset of the resolver stub from the start of SYMBOL_ENTRY. | |
483 | The stub starts with "move.l #relocoffset,%d0". */ | |
484 | bfd_vma symbol_resolve_entry; | |
485 | }; | |
486 | ||
252b5132 RH |
487 | /* The size in bytes of an entry in the procedure linkage table. */ |
488 | ||
489 | #define PLT_ENTRY_SIZE 20 | |
490 | ||
491 | /* The first entry in a procedure linkage table looks like this. See | |
492 | the SVR4 ABI m68k supplement to see how this works. */ | |
493 | ||
494 | static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] = | |
495 | { | |
496 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ | |
cc3e26be | 497 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
252b5132 | 498 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */ |
cc3e26be | 499 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
252b5132 RH |
500 | 0, 0, 0, 0 /* pad out to 20 bytes. */ |
501 | }; | |
502 | ||
503 | /* Subsequent entries in a procedure linkage table look like this. */ | |
504 | ||
505 | static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] = | |
506 | { | |
507 | 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,symbol@GOTPC]) */ | |
cc3e26be | 508 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
252b5132 | 509 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ |
cc3e26be | 510 | 0, 0, 0, 0, /* + reloc index */ |
252b5132 | 511 | 0x60, 0xff, /* bra.l .plt */ |
cc3e26be | 512 | 0, 0, 0, 0 /* + .plt - . */ |
252b5132 RH |
513 | }; |
514 | ||
695344c0 NC |
515 | static const struct elf_m68k_plt_info elf_m68k_plt_info = |
516 | { | |
cc3e26be RS |
517 | PLT_ENTRY_SIZE, |
518 | elf_m68k_plt0_entry, { 4, 12 }, | |
519 | elf_m68k_plt_entry, { 4, 16 }, 8 | |
520 | }; | |
238d258f | 521 | |
7fb9f789 | 522 | #define ISAB_PLT_ENTRY_SIZE 24 |
238d258f | 523 | |
cc3e26be | 524 | static const bfd_byte elf_isab_plt0_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 525 | { |
07d6d2b8 AM |
526 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
527 | 0, 0, 0, 0, /* + (.got + 4) - . */ | |
cc3e26be | 528 | 0x2f, 0x3b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),-(%sp) */ |
07d6d2b8 AM |
529 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
530 | 0, 0, 0, 0, /* + (.got + 8) - . */ | |
cc3e26be | 531 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ |
07d6d2b8 | 532 | 0x4e, 0xd0, /* jmp (%a0) */ |
238d258f NC |
533 | 0x4e, 0x71 /* nop */ |
534 | }; | |
535 | ||
536 | /* Subsequent entries in a procedure linkage table look like this. */ | |
537 | ||
cc3e26be | 538 | static const bfd_byte elf_isab_plt_entry[ISAB_PLT_ENTRY_SIZE] = |
238d258f | 539 | { |
07d6d2b8 AM |
540 | 0x20, 0x3c, /* move.l #offset,%d0 */ |
541 | 0, 0, 0, 0, /* + (.got.plt entry) - . */ | |
cc3e26be | 542 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ |
07d6d2b8 AM |
543 | 0x4e, 0xd0, /* jmp (%a0) */ |
544 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
545 | 0, 0, 0, 0, /* + reloc index */ | |
546 | 0x60, 0xff, /* bra.l .plt */ | |
547 | 0, 0, 0, 0 /* + .plt - . */ | |
238d258f NC |
548 | }; |
549 | ||
695344c0 NC |
550 | static const struct elf_m68k_plt_info elf_isab_plt_info = |
551 | { | |
cc3e26be RS |
552 | ISAB_PLT_ENTRY_SIZE, |
553 | elf_isab_plt0_entry, { 2, 12 }, | |
554 | elf_isab_plt_entry, { 2, 20 }, 12 | |
555 | }; | |
9e1281c7 | 556 | |
7fb9f789 | 557 | #define ISAC_PLT_ENTRY_SIZE 24 |
9a2e615a NS |
558 | |
559 | static const bfd_byte elf_isac_plt0_entry[ISAC_PLT_ENTRY_SIZE] = | |
560 | { | |
561 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
562 | 0, 0, 0, 0, /* replaced with .got + 4 - . */ | |
563 | 0x2e, 0xbb, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l),(%sp) */ | |
564 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
565 | 0, 0, 0, 0, /* replaced with .got + 8 - . */ | |
566 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
567 | 0x4e, 0xd0, /* jmp (%a0) */ | |
568 | 0x4e, 0x71 /* nop */ | |
569 | }; | |
570 | ||
571 | /* Subsequent entries in a procedure linkage table look like this. */ | |
572 | ||
573 | static const bfd_byte elf_isac_plt_entry[ISAC_PLT_ENTRY_SIZE] = | |
574 | { | |
575 | 0x20, 0x3c, /* move.l #offset,%d0 */ | |
576 | 0, 0, 0, 0, /* replaced with (.got entry) - . */ | |
577 | 0x20, 0x7b, 0x08, 0xfa, /* move.l (-6,%pc,%d0:l), %a0 */ | |
578 | 0x4e, 0xd0, /* jmp (%a0) */ | |
579 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
580 | 0, 0, 0, 0, /* replaced with offset into relocation table */ | |
581 | 0x61, 0xff, /* bsr.l .plt */ | |
07d6d2b8 | 582 | 0, 0, 0, 0 /* replaced with .plt - . */ |
9a2e615a NS |
583 | }; |
584 | ||
695344c0 NC |
585 | static const struct elf_m68k_plt_info elf_isac_plt_info = |
586 | { | |
9a2e615a NS |
587 | ISAC_PLT_ENTRY_SIZE, |
588 | elf_isac_plt0_entry, { 2, 12}, | |
589 | elf_isac_plt_entry, { 2, 20 }, 12 | |
590 | }; | |
591 | ||
cc3e26be | 592 | #define CPU32_PLT_ENTRY_SIZE 24 |
9e1281c7 | 593 | /* Procedure linkage table entries for the cpu32 */ |
cc3e26be | 594 | static const bfd_byte elf_cpu32_plt0_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 595 | { |
6091b433 | 596 | 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */ |
07d6d2b8 | 597 | 0, 0, 0, 2, /* + (.got + 4) - . */ |
6091b433 | 598 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
07d6d2b8 AM |
599 | 0, 0, 0, 2, /* + (.got + 8) - . */ |
600 | 0x4e, 0xd1, /* jmp %a1@ */ | |
601 | 0, 0, 0, 0, /* pad out to 24 bytes. */ | |
9e1281c7 CM |
602 | 0, 0 |
603 | }; | |
604 | ||
cc3e26be | 605 | static const bfd_byte elf_cpu32_plt_entry[CPU32_PLT_ENTRY_SIZE] = |
9e1281c7 | 606 | { |
1ca42bad | 607 | 0x22, 0x7b, 0x01, 0x70, /* moveal %pc@(0xc), %a1 */ |
07d6d2b8 AM |
608 | 0, 0, 0, 2, /* + (.got.plt entry) - . */ |
609 | 0x4e, 0xd1, /* jmp %a1@ */ | |
610 | 0x2f, 0x3c, /* move.l #offset,-(%sp) */ | |
611 | 0, 0, 0, 0, /* + reloc index */ | |
612 | 0x60, 0xff, /* bra.l .plt */ | |
613 | 0, 0, 0, 0, /* + .plt - . */ | |
9e1281c7 CM |
614 | 0, 0 |
615 | }; | |
616 | ||
695344c0 NC |
617 | static const struct elf_m68k_plt_info elf_cpu32_plt_info = |
618 | { | |
cc3e26be RS |
619 | CPU32_PLT_ENTRY_SIZE, |
620 | elf_cpu32_plt0_entry, { 4, 12 }, | |
621 | elf_cpu32_plt_entry, { 4, 18 }, 10 | |
622 | }; | |
623 | ||
252b5132 RH |
624 | /* The m68k linker needs to keep track of the number of relocs that it |
625 | decides to copy in check_relocs for each symbol. This is so that it | |
626 | can discard PC relative relocs if it doesn't need them when linking | |
627 | with -Bsymbolic. We store the information in a field extending the | |
628 | regular ELF linker hash table. */ | |
629 | ||
630 | /* This structure keeps track of the number of PC relative relocs we have | |
631 | copied for a given symbol. */ | |
632 | ||
633 | struct elf_m68k_pcrel_relocs_copied | |
634 | { | |
635 | /* Next section. */ | |
636 | struct elf_m68k_pcrel_relocs_copied *next; | |
637 | /* A section in dynobj. */ | |
638 | asection *section; | |
639 | /* Number of relocs copied in this section. */ | |
640 | bfd_size_type count; | |
641 | }; | |
642 | ||
7fb9f789 NC |
643 | /* Forward declaration. */ |
644 | struct elf_m68k_got_entry; | |
645 | ||
252b5132 RH |
646 | /* m68k ELF linker hash entry. */ |
647 | ||
648 | struct elf_m68k_link_hash_entry | |
649 | { | |
650 | struct elf_link_hash_entry root; | |
651 | ||
652 | /* Number of PC relative relocs copied for this symbol. */ | |
653 | struct elf_m68k_pcrel_relocs_copied *pcrel_relocs_copied; | |
7fb9f789 NC |
654 | |
655 | /* Key to got_entries. */ | |
656 | unsigned long got_entry_key; | |
657 | ||
658 | /* List of GOT entries for this symbol. This list is build during | |
659 | offset finalization and is used within elf_m68k_finish_dynamic_symbol | |
660 | to traverse all GOT entries for a particular symbol. | |
661 | ||
662 | ??? We could've used root.got.glist field instead, but having | |
663 | a separate field is cleaner. */ | |
664 | struct elf_m68k_got_entry *glist; | |
252b5132 RH |
665 | }; |
666 | ||
0cca5f05 AS |
667 | #define elf_m68k_hash_entry(ent) ((struct elf_m68k_link_hash_entry *) (ent)) |
668 | ||
7fb9f789 NC |
669 | /* Key part of GOT entry in hashtable. */ |
670 | struct elf_m68k_got_entry_key | |
671 | { | |
672 | /* BFD in which this symbol was defined. NULL for global symbols. */ | |
673 | const bfd *bfd; | |
674 | ||
675 | /* Symbol index. Either local symbol index or h->got_entry_key. */ | |
676 | unsigned long symndx; | |
cf869cce NC |
677 | |
678 | /* Type is one of R_68K_GOT{8, 16, 32}O, R_68K_TLS_GD{8, 16, 32}, | |
679 | R_68K_TLS_LDM{8, 16, 32} or R_68K_TLS_IE{8, 16, 32}. | |
680 | ||
681 | From perspective of hashtable key, only elf_m68k_got_reloc_type (type) | |
682 | matters. That is, we distinguish between, say, R_68K_GOT16O | |
683 | and R_68K_GOT32O when allocating offsets, but they are considered to be | |
684 | the same when searching got->entries. */ | |
685 | enum elf_m68k_reloc_type type; | |
7fb9f789 NC |
686 | }; |
687 | ||
cf869cce NC |
688 | /* Size of the GOT offset suitable for relocation. */ |
689 | enum elf_m68k_got_offset_size { R_8, R_16, R_32, R_LAST }; | |
690 | ||
7fb9f789 NC |
691 | /* Entry of the GOT. */ |
692 | struct elf_m68k_got_entry | |
693 | { | |
694 | /* GOT entries are put into a got->entries hashtable. This is the key. */ | |
695 | struct elf_m68k_got_entry_key key_; | |
696 | ||
697 | /* GOT entry data. We need s1 before offset finalization and s2 after. */ | |
698 | union | |
699 | { | |
700 | struct | |
701 | { | |
5c3261b0 | 702 | /* Number of times this entry is referenced. */ |
7fb9f789 | 703 | bfd_vma refcount; |
7fb9f789 NC |
704 | } s1; |
705 | ||
706 | struct | |
707 | { | |
708 | /* Offset from the start of .got section. To calculate offset relative | |
de194d85 | 709 | to GOT pointer one should subtract got->offset from this value. */ |
7fb9f789 NC |
710 | bfd_vma offset; |
711 | ||
712 | /* Pointer to the next GOT entry for this global symbol. | |
713 | Symbols have at most one entry in one GOT, but might | |
714 | have entries in more than one GOT. | |
715 | Root of this list is h->glist. | |
716 | NULL for local symbols. */ | |
717 | struct elf_m68k_got_entry *next; | |
718 | } s2; | |
719 | } u; | |
720 | }; | |
721 | ||
cf869cce NC |
722 | /* Return representative type for relocation R_TYPE. |
723 | This is used to avoid enumerating many relocations in comparisons, | |
724 | switches etc. */ | |
725 | ||
726 | static enum elf_m68k_reloc_type | |
727 | elf_m68k_reloc_got_type (enum elf_m68k_reloc_type r_type) | |
728 | { | |
729 | switch (r_type) | |
730 | { | |
731 | /* In most cases R_68K_GOTx relocations require the very same | |
732 | handling as R_68K_GOT32O relocation. In cases when we need | |
733 | to distinguish between the two, we use explicitly compare against | |
734 | r_type. */ | |
735 | case R_68K_GOT32: | |
736 | case R_68K_GOT16: | |
737 | case R_68K_GOT8: | |
738 | case R_68K_GOT32O: | |
739 | case R_68K_GOT16O: | |
740 | case R_68K_GOT8O: | |
741 | return R_68K_GOT32O; | |
742 | ||
743 | case R_68K_TLS_GD32: | |
744 | case R_68K_TLS_GD16: | |
745 | case R_68K_TLS_GD8: | |
746 | return R_68K_TLS_GD32; | |
747 | ||
748 | case R_68K_TLS_LDM32: | |
749 | case R_68K_TLS_LDM16: | |
750 | case R_68K_TLS_LDM8: | |
751 | return R_68K_TLS_LDM32; | |
752 | ||
753 | case R_68K_TLS_IE32: | |
754 | case R_68K_TLS_IE16: | |
755 | case R_68K_TLS_IE8: | |
756 | return R_68K_TLS_IE32; | |
757 | ||
758 | default: | |
759 | BFD_ASSERT (FALSE); | |
760 | return 0; | |
761 | } | |
762 | } | |
763 | ||
764 | /* Return size of the GOT entry offset for relocation R_TYPE. */ | |
765 | ||
766 | static enum elf_m68k_got_offset_size | |
767 | elf_m68k_reloc_got_offset_size (enum elf_m68k_reloc_type r_type) | |
768 | { | |
769 | switch (r_type) | |
770 | { | |
771 | case R_68K_GOT32: case R_68K_GOT16: case R_68K_GOT8: | |
772 | case R_68K_GOT32O: case R_68K_TLS_GD32: case R_68K_TLS_LDM32: | |
773 | case R_68K_TLS_IE32: | |
774 | return R_32; | |
775 | ||
776 | case R_68K_GOT16O: case R_68K_TLS_GD16: case R_68K_TLS_LDM16: | |
777 | case R_68K_TLS_IE16: | |
778 | return R_16; | |
779 | ||
780 | case R_68K_GOT8O: case R_68K_TLS_GD8: case R_68K_TLS_LDM8: | |
781 | case R_68K_TLS_IE8: | |
782 | return R_8; | |
783 | ||
784 | default: | |
785 | BFD_ASSERT (FALSE); | |
786 | return 0; | |
787 | } | |
788 | } | |
789 | ||
790 | /* Return number of GOT entries we need to allocate in GOT for | |
791 | relocation R_TYPE. */ | |
792 | ||
793 | static bfd_vma | |
794 | elf_m68k_reloc_got_n_slots (enum elf_m68k_reloc_type r_type) | |
795 | { | |
796 | switch (elf_m68k_reloc_got_type (r_type)) | |
797 | { | |
798 | case R_68K_GOT32O: | |
799 | case R_68K_TLS_IE32: | |
800 | return 1; | |
801 | ||
802 | case R_68K_TLS_GD32: | |
803 | case R_68K_TLS_LDM32: | |
804 | return 2; | |
805 | ||
806 | default: | |
807 | BFD_ASSERT (FALSE); | |
808 | return 0; | |
809 | } | |
810 | } | |
811 | ||
812 | /* Return TRUE if relocation R_TYPE is a TLS one. */ | |
813 | ||
814 | static bfd_boolean | |
815 | elf_m68k_reloc_tls_p (enum elf_m68k_reloc_type r_type) | |
816 | { | |
817 | switch (r_type) | |
818 | { | |
819 | case R_68K_TLS_GD32: case R_68K_TLS_GD16: case R_68K_TLS_GD8: | |
820 | case R_68K_TLS_LDM32: case R_68K_TLS_LDM16: case R_68K_TLS_LDM8: | |
821 | case R_68K_TLS_LDO32: case R_68K_TLS_LDO16: case R_68K_TLS_LDO8: | |
822 | case R_68K_TLS_IE32: case R_68K_TLS_IE16: case R_68K_TLS_IE8: | |
823 | case R_68K_TLS_LE32: case R_68K_TLS_LE16: case R_68K_TLS_LE8: | |
824 | case R_68K_TLS_DTPMOD32: case R_68K_TLS_DTPREL32: case R_68K_TLS_TPREL32: | |
825 | return TRUE; | |
826 | ||
827 | default: | |
828 | return FALSE; | |
829 | } | |
830 | } | |
831 | ||
7fb9f789 NC |
832 | /* Data structure representing a single GOT. */ |
833 | struct elf_m68k_got | |
834 | { | |
835 | /* Hashtable of 'struct elf_m68k_got_entry's. | |
836 | Starting size of this table is the maximum number of | |
837 | R_68K_GOT8O entries. */ | |
838 | htab_t entries; | |
839 | ||
cf869cce NC |
840 | /* Number of R_x slots in this GOT. Some (e.g., TLS) entries require |
841 | several GOT slots. | |
7fb9f789 | 842 | |
cf869cce NC |
843 | n_slots[R_8] is the count of R_8 slots in this GOT. |
844 | n_slots[R_16] is the cumulative count of R_8 and R_16 slots | |
845 | in this GOT. | |
846 | n_slots[R_32] is the cumulative count of R_8, R_16 and R_32 slots | |
847 | in this GOT. This is the total number of slots. */ | |
848 | bfd_vma n_slots[R_LAST]; | |
7fb9f789 | 849 | |
cf869cce | 850 | /* Number of local (entry->key_.h == NULL) slots in this GOT. |
7fb9f789 NC |
851 | This is only used to properly calculate size of .rela.got section; |
852 | see elf_m68k_partition_multi_got. */ | |
cf869cce | 853 | bfd_vma local_n_slots; |
7fb9f789 NC |
854 | |
855 | /* Offset of this GOT relative to beginning of .got section. */ | |
856 | bfd_vma offset; | |
857 | }; | |
858 | ||
859 | /* BFD and its GOT. This is an entry in multi_got->bfd2got hashtable. */ | |
860 | struct elf_m68k_bfd2got_entry | |
861 | { | |
862 | /* BFD. */ | |
863 | const bfd *bfd; | |
864 | ||
865 | /* Assigned GOT. Before partitioning multi-GOT each BFD has its own | |
866 | GOT structure. After partitioning several BFD's might [and often do] | |
867 | share a single GOT. */ | |
868 | struct elf_m68k_got *got; | |
869 | }; | |
870 | ||
871 | /* The main data structure holding all the pieces. */ | |
872 | struct elf_m68k_multi_got | |
873 | { | |
874 | /* Hashtable mapping each BFD to its GOT. If a BFD doesn't have an entry | |
875 | here, then it doesn't need a GOT (this includes the case of a BFD | |
876 | having an empty GOT). | |
877 | ||
878 | ??? This hashtable can be replaced by an array indexed by bfd->id. */ | |
879 | htab_t bfd2got; | |
880 | ||
881 | /* Next symndx to assign a global symbol. | |
882 | h->got_entry_key is initialized from this counter. */ | |
883 | unsigned long global_symndx; | |
884 | }; | |
885 | ||
252b5132 RH |
886 | /* m68k ELF linker hash table. */ |
887 | ||
888 | struct elf_m68k_link_hash_table | |
889 | { | |
890 | struct elf_link_hash_table root; | |
b6152c34 | 891 | |
87d72d41 AM |
892 | /* Small local sym cache. */ |
893 | struct sym_cache sym_cache; | |
cc3e26be RS |
894 | |
895 | /* The PLT format used by this link, or NULL if the format has not | |
896 | yet been chosen. */ | |
897 | const struct elf_m68k_plt_info *plt_info; | |
7fb9f789 NC |
898 | |
899 | /* True, if GP is loaded within each function which uses it. | |
900 | Set to TRUE when GOT negative offsets or multi-GOT is enabled. */ | |
901 | bfd_boolean local_gp_p; | |
902 | ||
903 | /* Switch controlling use of negative offsets to double the size of GOTs. */ | |
904 | bfd_boolean use_neg_got_offsets_p; | |
905 | ||
906 | /* Switch controlling generation of multiple GOTs. */ | |
907 | bfd_boolean allow_multigot_p; | |
908 | ||
909 | /* Multi-GOT data structure. */ | |
910 | struct elf_m68k_multi_got multi_got_; | |
252b5132 RH |
911 | }; |
912 | ||
252b5132 RH |
913 | /* Get the m68k ELF linker hash table from a link_info structure. */ |
914 | ||
915 | #define elf_m68k_hash_table(p) \ | |
4dfe6ac6 NC |
916 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
917 | == M68K_ELF_DATA ? ((struct elf_m68k_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 918 | |
7fb9f789 NC |
919 | /* Shortcut to multi-GOT data. */ |
920 | #define elf_m68k_multi_got(INFO) (&elf_m68k_hash_table (INFO)->multi_got_) | |
921 | ||
252b5132 RH |
922 | /* Create an entry in an m68k ELF linker hash table. */ |
923 | ||
924 | static struct bfd_hash_entry * | |
4dfe6ac6 NC |
925 | elf_m68k_link_hash_newfunc (struct bfd_hash_entry *entry, |
926 | struct bfd_hash_table *table, | |
927 | const char *string) | |
252b5132 | 928 | { |
0cca5f05 | 929 | struct bfd_hash_entry *ret = entry; |
252b5132 RH |
930 | |
931 | /* Allocate the structure if it has not already been allocated by a | |
932 | subclass. */ | |
0cca5f05 AS |
933 | if (ret == NULL) |
934 | ret = bfd_hash_allocate (table, | |
935 | sizeof (struct elf_m68k_link_hash_entry)); | |
936 | if (ret == NULL) | |
937 | return ret; | |
252b5132 RH |
938 | |
939 | /* Call the allocation method of the superclass. */ | |
0cca5f05 AS |
940 | ret = _bfd_elf_link_hash_newfunc (ret, table, string); |
941 | if (ret != NULL) | |
7fb9f789 NC |
942 | { |
943 | elf_m68k_hash_entry (ret)->pcrel_relocs_copied = NULL; | |
944 | elf_m68k_hash_entry (ret)->got_entry_key = 0; | |
945 | elf_m68k_hash_entry (ret)->glist = NULL; | |
946 | } | |
252b5132 | 947 | |
0cca5f05 | 948 | return ret; |
252b5132 RH |
949 | } |
950 | ||
68faa637 AM |
951 | /* Destroy an m68k ELF linker hash table. */ |
952 | ||
953 | static void | |
d495ab0d | 954 | elf_m68k_link_hash_table_free (bfd *obfd) |
68faa637 AM |
955 | { |
956 | struct elf_m68k_link_hash_table *htab; | |
957 | ||
d495ab0d | 958 | htab = (struct elf_m68k_link_hash_table *) obfd->link.hash; |
68faa637 AM |
959 | |
960 | if (htab->multi_got_.bfd2got != NULL) | |
961 | { | |
962 | htab_delete (htab->multi_got_.bfd2got); | |
963 | htab->multi_got_.bfd2got = NULL; | |
964 | } | |
d495ab0d | 965 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
966 | } |
967 | ||
252b5132 RH |
968 | /* Create an m68k ELF linker hash table. */ |
969 | ||
970 | static struct bfd_link_hash_table * | |
4dfe6ac6 | 971 | elf_m68k_link_hash_table_create (bfd *abfd) |
252b5132 RH |
972 | { |
973 | struct elf_m68k_link_hash_table *ret; | |
986f0783 | 974 | size_t amt = sizeof (struct elf_m68k_link_hash_table); |
252b5132 | 975 | |
7bf52ea2 | 976 | ret = (struct elf_m68k_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
977 | if (ret == (struct elf_m68k_link_hash_table *) NULL) |
978 | return NULL; | |
979 | ||
66eb6687 AM |
980 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
981 | elf_m68k_link_hash_newfunc, | |
4dfe6ac6 NC |
982 | sizeof (struct elf_m68k_link_hash_entry), |
983 | M68K_ELF_DATA)) | |
252b5132 | 984 | { |
e2d34d7d | 985 | free (ret); |
252b5132 RH |
986 | return NULL; |
987 | } | |
d495ab0d | 988 | ret->root.root.hash_table_free = elf_m68k_link_hash_table_free; |
252b5132 | 989 | |
7fb9f789 | 990 | ret->multi_got_.global_symndx = 1; |
b6152c34 | 991 | |
252b5132 RH |
992 | return &ret->root.root; |
993 | } | |
994 | ||
266abb8f NS |
995 | /* Set the right machine number. */ |
996 | ||
997 | static bfd_boolean | |
998 | elf32_m68k_object_p (bfd *abfd) | |
999 | { | |
1000 | unsigned int mach = 0; | |
1001 | unsigned features = 0; | |
1002 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
1003 | ||
425c6cb0 | 1004 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) |
266abb8f | 1005 | features |= m68000; |
425c6cb0 | 1006 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) |
3bdcfdf4 KH |
1007 | features |= cpu32; |
1008 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1009 | features |= fido_a; | |
425c6cb0 | 1010 | else |
266abb8f | 1011 | { |
c694fd50 | 1012 | switch (eflags & EF_M68K_CF_ISA_MASK) |
266abb8f | 1013 | { |
c694fd50 | 1014 | case EF_M68K_CF_ISA_A_NODIV: |
266abb8f NS |
1015 | features |= mcfisa_a; |
1016 | break; | |
c694fd50 | 1017 | case EF_M68K_CF_ISA_A: |
0b2e31dc NS |
1018 | features |= mcfisa_a|mcfhwdiv; |
1019 | break; | |
c694fd50 | 1020 | case EF_M68K_CF_ISA_A_PLUS: |
0b2e31dc NS |
1021 | features |= mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp; |
1022 | break; | |
c694fd50 | 1023 | case EF_M68K_CF_ISA_B_NOUSP: |
0b2e31dc NS |
1024 | features |= mcfisa_a|mcfisa_b|mcfhwdiv; |
1025 | break; | |
c694fd50 | 1026 | case EF_M68K_CF_ISA_B: |
0b2e31dc NS |
1027 | features |= mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp; |
1028 | break; | |
9a2e615a NS |
1029 | case EF_M68K_CF_ISA_C: |
1030 | features |= mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp; | |
1031 | break; | |
8d100c32 KH |
1032 | case EF_M68K_CF_ISA_C_NODIV: |
1033 | features |= mcfisa_a|mcfisa_c|mcfusp; | |
1034 | break; | |
266abb8f | 1035 | } |
c694fd50 | 1036 | switch (eflags & EF_M68K_CF_MAC_MASK) |
266abb8f | 1037 | { |
c694fd50 | 1038 | case EF_M68K_CF_MAC: |
266abb8f NS |
1039 | features |= mcfmac; |
1040 | break; | |
c694fd50 | 1041 | case EF_M68K_CF_EMAC: |
266abb8f NS |
1042 | features |= mcfemac; |
1043 | break; | |
1044 | } | |
c694fd50 | 1045 | if (eflags & EF_M68K_CF_FLOAT) |
266abb8f NS |
1046 | features |= cfloat; |
1047 | } | |
1048 | ||
1049 | mach = bfd_m68k_features_to_mach (features); | |
1050 | bfd_default_set_arch_mach (abfd, bfd_arch_m68k, mach); | |
1051 | ||
1052 | return TRUE; | |
1053 | } | |
1054 | ||
fc9f1df9 NC |
1055 | /* Somewhat reverse of elf32_m68k_object_p, this sets the e_flag |
1056 | field based on the machine number. */ | |
1057 | ||
cc364be6 AM |
1058 | static bfd_boolean |
1059 | elf_m68k_final_write_processing (bfd *abfd) | |
fc9f1df9 NC |
1060 | { |
1061 | int mach = bfd_get_mach (abfd); | |
1062 | unsigned long e_flags = elf_elfheader (abfd)->e_flags; | |
1063 | ||
1064 | if (!e_flags) | |
1065 | { | |
1066 | unsigned int arch_mask; | |
1067 | ||
1068 | arch_mask = bfd_m68k_mach_to_features (mach); | |
1069 | ||
1070 | if (arch_mask & m68000) | |
1071 | e_flags = EF_M68K_M68000; | |
1072 | else if (arch_mask & cpu32) | |
1073 | e_flags = EF_M68K_CPU32; | |
1074 | else if (arch_mask & fido_a) | |
1075 | e_flags = EF_M68K_FIDO; | |
1076 | else | |
1077 | { | |
1078 | switch (arch_mask | |
1079 | & (mcfisa_a | mcfisa_aa | mcfisa_b | mcfisa_c | mcfhwdiv | mcfusp)) | |
1080 | { | |
1081 | case mcfisa_a: | |
1082 | e_flags |= EF_M68K_CF_ISA_A_NODIV; | |
1083 | break; | |
1084 | case mcfisa_a | mcfhwdiv: | |
1085 | e_flags |= EF_M68K_CF_ISA_A; | |
1086 | break; | |
1087 | case mcfisa_a | mcfisa_aa | mcfhwdiv | mcfusp: | |
1088 | e_flags |= EF_M68K_CF_ISA_A_PLUS; | |
1089 | break; | |
1090 | case mcfisa_a | mcfisa_b | mcfhwdiv: | |
1091 | e_flags |= EF_M68K_CF_ISA_B_NOUSP; | |
1092 | break; | |
1093 | case mcfisa_a | mcfisa_b | mcfhwdiv | mcfusp: | |
1094 | e_flags |= EF_M68K_CF_ISA_B; | |
1095 | break; | |
1096 | case mcfisa_a | mcfisa_c | mcfhwdiv | mcfusp: | |
1097 | e_flags |= EF_M68K_CF_ISA_C; | |
1098 | break; | |
1099 | case mcfisa_a | mcfisa_c | mcfusp: | |
1100 | e_flags |= EF_M68K_CF_ISA_C_NODIV; | |
1101 | break; | |
1102 | } | |
1103 | if (arch_mask & mcfmac) | |
1104 | e_flags |= EF_M68K_CF_MAC; | |
1105 | else if (arch_mask & mcfemac) | |
1106 | e_flags |= EF_M68K_CF_EMAC; | |
1107 | if (arch_mask & cfloat) | |
1108 | e_flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E; | |
1109 | } | |
1110 | elf_elfheader (abfd)->e_flags = e_flags; | |
1111 | } | |
cc364be6 | 1112 | return _bfd_elf_final_write_processing (abfd); |
fc9f1df9 NC |
1113 | } |
1114 | ||
ae9a127f | 1115 | /* Keep m68k-specific flags in the ELF header. */ |
fc9f1df9 | 1116 | |
b34976b6 | 1117 | static bfd_boolean |
2c3fc389 | 1118 | elf32_m68k_set_private_flags (bfd *abfd, flagword flags) |
9e1281c7 CM |
1119 | { |
1120 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
1121 | elf_flags_init (abfd) = TRUE; |
1122 | return TRUE; | |
9e1281c7 CM |
1123 | } |
1124 | ||
85f7484a PB |
1125 | /* Merge object attributes from IBFD into OBFD. Warn if |
1126 | there are conflicting attributes. */ | |
1127 | static bfd_boolean | |
1128 | m68k_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info) | |
1129 | { | |
1130 | bfd *obfd = info->output_bfd; | |
1131 | obj_attribute *in_attr, *in_attrs; | |
1132 | obj_attribute *out_attr, *out_attrs; | |
1133 | bfd_boolean ret = TRUE; | |
1134 | ||
1135 | in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU]; | |
1136 | out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU]; | |
1137 | ||
1138 | in_attr = &in_attrs[Tag_GNU_M68K_ABI_FP]; | |
1139 | out_attr = &out_attrs[Tag_GNU_M68K_ABI_FP]; | |
1140 | ||
1141 | if (in_attr->i != out_attr->i) | |
1142 | { | |
1143 | int in_fp = in_attr->i & 3; | |
1144 | int out_fp = out_attr->i & 3; | |
1145 | static bfd *last_fp; | |
1146 | ||
1147 | if (in_fp == 0) | |
1148 | ; | |
1149 | else if (out_fp == 0) | |
1150 | { | |
1151 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL; | |
1152 | out_attr->i ^= in_fp; | |
1153 | last_fp = ibfd; | |
1154 | } | |
1155 | else if (out_fp == 1 && in_fp == 2) | |
1156 | { | |
1157 | _bfd_error_handler | |
1158 | /* xgettext:c-format */ | |
1159 | (_("%pB uses hard float, %pB uses soft float"), | |
1160 | last_fp, ibfd); | |
1161 | ret = FALSE; | |
1162 | } | |
1163 | else if (out_fp == 2 && in_fp == 1) | |
1164 | { | |
1165 | _bfd_error_handler | |
1166 | /* xgettext:c-format */ | |
1167 | (_("%pB uses hard float, %pB uses soft float"), | |
1168 | ibfd, last_fp); | |
1169 | ret = FALSE; | |
1170 | } | |
1171 | } | |
1172 | ||
1173 | if (!ret) | |
1174 | { | |
1175 | out_attr->type = ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_ERROR; | |
1176 | bfd_set_error (bfd_error_bad_value); | |
1177 | return FALSE; | |
1178 | } | |
1179 | ||
1180 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
1181 | return _bfd_elf_merge_object_attributes (ibfd, info); | |
1182 | } | |
1183 | ||
9e1281c7 CM |
1184 | /* Merge backend specific data from an object file to the output |
1185 | object file when linking. */ | |
b34976b6 | 1186 | static bfd_boolean |
50e03d47 | 1187 | elf32_m68k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
9e1281c7 | 1188 | { |
50e03d47 | 1189 | bfd *obfd = info->output_bfd; |
9e1281c7 CM |
1190 | flagword out_flags; |
1191 | flagword in_flags; | |
a9d34880 RS |
1192 | flagword out_isa; |
1193 | flagword in_isa; | |
1194 | const bfd_arch_info_type *arch_info; | |
7fb9f789 | 1195 | |
79299211 | 1196 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
9e1281c7 | 1197 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
79299211 NC |
1198 | /* PR 24523: For non-ELF files do not try to merge any private |
1199 | data, but also do not prevent the link from succeeding. */ | |
1200 | return TRUE; | |
266abb8f | 1201 | |
a9d34880 RS |
1202 | /* Get the merged machine. This checks for incompatibility between |
1203 | Coldfire & non-Coldfire flags, incompability between different | |
1204 | Coldfire ISAs, and incompability between different MAC types. */ | |
1205 | arch_info = bfd_arch_get_compatible (ibfd, obfd, FALSE); | |
1206 | if (!arch_info) | |
1207 | return FALSE; | |
9e1281c7 | 1208 | |
7fb9f789 NC |
1209 | bfd_set_arch_mach (obfd, bfd_arch_m68k, arch_info->mach); |
1210 | ||
85f7484a PB |
1211 | if (!m68k_elf_merge_obj_attributes (ibfd, info)) |
1212 | return FALSE; | |
1213 | ||
7fb9f789 NC |
1214 | in_flags = elf_elfheader (ibfd)->e_flags; |
1215 | if (!elf_flags_init (obfd)) | |
1216 | { | |
1217 | elf_flags_init (obfd) = TRUE; | |
1218 | out_flags = in_flags; | |
1219 | } | |
1220 | else | |
1221 | { | |
1222 | out_flags = elf_elfheader (obfd)->e_flags; | |
1223 | unsigned int variant_mask; | |
1224 | ||
1225 | if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1226 | variant_mask = 0; | |
1227 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1228 | variant_mask = 0; | |
1229 | else if ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1230 | variant_mask = 0; | |
1231 | else | |
1232 | variant_mask = EF_M68K_CF_ISA_MASK; | |
1233 | ||
1234 | in_isa = (in_flags & variant_mask); | |
1235 | out_isa = (out_flags & variant_mask); | |
1236 | if (in_isa > out_isa) | |
1237 | out_flags ^= in_isa ^ out_isa; | |
1238 | if (((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32 | |
1239 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1240 | || ((in_flags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO | |
1241 | && (out_flags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32)) | |
1242 | out_flags = EF_M68K_FIDO; | |
1243 | else | |
1244 | out_flags |= in_flags ^ in_isa; | |
1245 | } | |
1246 | elf_elfheader (obfd)->e_flags = out_flags; | |
1247 | ||
1248 | return TRUE; | |
1249 | } | |
1250 | ||
1251 | /* Display the flags field. */ | |
1252 | ||
1253 | static bfd_boolean | |
1254 | elf32_m68k_print_private_bfd_data (bfd *abfd, void * ptr) | |
1255 | { | |
1256 | FILE *file = (FILE *) ptr; | |
1257 | flagword eflags = elf_elfheader (abfd)->e_flags; | |
1258 | ||
1259 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1260 | ||
1261 | /* Print normal ELF private data. */ | |
1262 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1263 | ||
1264 | /* Ignore init flag - it may not be set, despite the flags field containing valid data. */ | |
1265 | ||
1266 | /* xgettext:c-format */ | |
1267 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
1268 | ||
1269 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_M68000) | |
1270 | fprintf (file, " [m68000]"); | |
1271 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CPU32) | |
1272 | fprintf (file, " [cpu32]"); | |
1273 | else if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_FIDO) | |
1274 | fprintf (file, " [fido]"); | |
1275 | else | |
1276 | { | |
1277 | if ((eflags & EF_M68K_ARCH_MASK) == EF_M68K_CFV4E) | |
1278 | fprintf (file, " [cfv4e]"); | |
1279 | ||
1280 | if (eflags & EF_M68K_CF_ISA_MASK) | |
1281 | { | |
1282 | char const *isa = _("unknown"); | |
1283 | char const *mac = _("unknown"); | |
1284 | char const *additional = ""; | |
1285 | ||
1286 | switch (eflags & EF_M68K_CF_ISA_MASK) | |
1287 | { | |
1288 | case EF_M68K_CF_ISA_A_NODIV: | |
1289 | isa = "A"; | |
1290 | additional = " [nodiv]"; | |
1291 | break; | |
1292 | case EF_M68K_CF_ISA_A: | |
1293 | isa = "A"; | |
1294 | break; | |
1295 | case EF_M68K_CF_ISA_A_PLUS: | |
1296 | isa = "A+"; | |
1297 | break; | |
1298 | case EF_M68K_CF_ISA_B_NOUSP: | |
1299 | isa = "B"; | |
1300 | additional = " [nousp]"; | |
1301 | break; | |
1302 | case EF_M68K_CF_ISA_B: | |
1303 | isa = "B"; | |
1304 | break; | |
1305 | case EF_M68K_CF_ISA_C: | |
1306 | isa = "C"; | |
1307 | break; | |
1308 | case EF_M68K_CF_ISA_C_NODIV: | |
1309 | isa = "C"; | |
1310 | additional = " [nodiv]"; | |
1311 | break; | |
1312 | } | |
1313 | fprintf (file, " [isa %s]%s", isa, additional); | |
1314 | ||
1315 | if (eflags & EF_M68K_CF_FLOAT) | |
1316 | fprintf (file, " [float]"); | |
1317 | ||
1318 | switch (eflags & EF_M68K_CF_MAC_MASK) | |
1319 | { | |
1320 | case 0: | |
1321 | mac = NULL; | |
1322 | break; | |
1323 | case EF_M68K_CF_MAC: | |
1324 | mac = "mac"; | |
1325 | break; | |
1326 | case EF_M68K_CF_EMAC: | |
1327 | mac = "emac"; | |
1328 | break; | |
f608cd77 NS |
1329 | case EF_M68K_CF_EMAC_B: |
1330 | mac = "emac_b"; | |
1331 | break; | |
7fb9f789 NC |
1332 | } |
1333 | if (mac) | |
1334 | fprintf (file, " [%s]", mac); | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | fputc ('\n', file); | |
1339 | ||
1340 | return TRUE; | |
1341 | } | |
1342 | ||
1343 | /* Multi-GOT support implementation design: | |
1344 | ||
1345 | Multi-GOT starts in check_relocs hook. There we scan all | |
1346 | relocations of a BFD and build a local GOT (struct elf_m68k_got) | |
1347 | for it. If a single BFD appears to require too many GOT slots with | |
1348 | R_68K_GOT8O or R_68K_GOT16O relocations, we fail with notification | |
1349 | to user. | |
1350 | After check_relocs has been invoked for each input BFD, we have | |
1351 | constructed a GOT for each input BFD. | |
1352 | ||
1353 | To minimize total number of GOTs required for a particular output BFD | |
1354 | (as some environments support only 1 GOT per output object) we try | |
1355 | to merge some of the GOTs to share an offset space. Ideally [and in most | |
1356 | cases] we end up with a single GOT. In cases when there are too many | |
1357 | restricted relocations (e.g., R_68K_GOT16O relocations) we end up with | |
1358 | several GOTs, assuming the environment can handle them. | |
1359 | ||
1360 | Partitioning is done in elf_m68k_partition_multi_got. We start with | |
1361 | an empty GOT and traverse bfd2got hashtable putting got_entries from | |
1362 | local GOTs to the new 'big' one. We do that by constructing an | |
1363 | intermediate GOT holding all the entries the local GOT has and the big | |
1364 | GOT lacks. Then we check if there is room in the big GOT to accomodate | |
1365 | all the entries from diff. On success we add those entries to the big | |
1366 | GOT; on failure we start the new 'big' GOT and retry the adding of | |
1367 | entries from the local GOT. Note that this retry will always succeed as | |
1368 | each local GOT doesn't overflow the limits. After partitioning we | |
1369 | end up with each bfd assigned one of the big GOTs. GOT entries in the | |
1370 | big GOTs are initialized with GOT offsets. Note that big GOTs are | |
1371 | positioned consequently in program space and represent a single huge GOT | |
1372 | to the outside world. | |
1373 | ||
1374 | After that we get to elf_m68k_relocate_section. There we | |
1375 | adjust relocations of GOT pointer (_GLOBAL_OFFSET_TABLE_) and symbol | |
1376 | relocations to refer to appropriate [assigned to current input_bfd] | |
1377 | big GOT. | |
1378 | ||
1379 | Notes: | |
1380 | ||
cf869cce NC |
1381 | GOT entry type: We have several types of GOT entries. |
1382 | * R_8 type is used in entries for symbols that have at least one | |
1383 | R_68K_GOT8O or R_68K_TLS_*8 relocation. We can have at most 0x40 | |
7fb9f789 | 1384 | such entries in one GOT. |
cf869cce NC |
1385 | * R_16 type is used in entries for symbols that have at least one |
1386 | R_68K_GOT16O or R_68K_TLS_*16 relocation and no R_8 relocations. | |
7fb9f789 | 1387 | We can have at most 0x4000 such entries in one GOT. |
cf869cce NC |
1388 | * R_32 type is used in all other cases. We can have as many |
1389 | such entries in one GOT as we'd like. | |
7fb9f789 NC |
1390 | When counting relocations we have to include the count of the smaller |
1391 | ranged relocations in the counts of the larger ranged ones in order | |
1392 | to correctly detect overflow. | |
1393 | ||
1394 | Sorting the GOT: In each GOT starting offsets are assigned to | |
cf869cce NC |
1395 | R_8 entries, which are followed by R_16 entries, and |
1396 | R_32 entries go at the end. See finalize_got_offsets for details. | |
7fb9f789 NC |
1397 | |
1398 | Negative GOT offsets: To double usable offset range of GOTs we use | |
1399 | negative offsets. As we assign entries with GOT offsets relative to | |
1400 | start of .got section, the offset values are positive. They become | |
1401 | negative only in relocate_section where got->offset value is | |
1402 | subtracted from them. | |
1403 | ||
1404 | 3 special GOT entries: There are 3 special GOT entries used internally | |
1405 | by loader. These entries happen to be placed to .got.plt section, | |
1406 | so we don't do anything about them in multi-GOT support. | |
1407 | ||
1408 | Memory management: All data except for hashtables | |
1409 | multi_got->bfd2got and got->entries are allocated on | |
1410 | elf_hash_table (info)->dynobj bfd (for this reason we pass 'info' | |
1411 | to most functions), so we don't need to care to free them. At the | |
1412 | moment of allocation hashtables are being linked into main data | |
1413 | structure (multi_got), all pieces of which are reachable from | |
1414 | elf_m68k_multi_got (info). We deallocate them in | |
1415 | elf_m68k_link_hash_table_free. */ | |
1416 | ||
1417 | /* Initialize GOT. */ | |
1418 | ||
1419 | static void | |
cf869cce NC |
1420 | elf_m68k_init_got (struct elf_m68k_got *got) |
1421 | { | |
1422 | got->entries = NULL; | |
1423 | got->n_slots[R_8] = 0; | |
1424 | got->n_slots[R_16] = 0; | |
1425 | got->n_slots[R_32] = 0; | |
1426 | got->local_n_slots = 0; | |
1427 | got->offset = (bfd_vma) -1; | |
7fb9f789 NC |
1428 | } |
1429 | ||
1430 | /* Destruct GOT. */ | |
1431 | ||
1432 | static void | |
1433 | elf_m68k_clear_got (struct elf_m68k_got *got) | |
1434 | { | |
1435 | if (got->entries != NULL) | |
1436 | { | |
1437 | htab_delete (got->entries); | |
1438 | got->entries = NULL; | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | /* Create and empty GOT structure. INFO is the context where memory | |
1443 | should be allocated. */ | |
1444 | ||
1445 | static struct elf_m68k_got * | |
1446 | elf_m68k_create_empty_got (struct bfd_link_info *info) | |
1447 | { | |
1448 | struct elf_m68k_got *got; | |
1449 | ||
1450 | got = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*got)); | |
1451 | if (got == NULL) | |
1452 | return NULL; | |
1453 | ||
cf869cce | 1454 | elf_m68k_init_got (got); |
7fb9f789 NC |
1455 | |
1456 | return got; | |
1457 | } | |
1458 | ||
1459 | /* Initialize KEY. */ | |
1460 | ||
1461 | static void | |
1462 | elf_m68k_init_got_entry_key (struct elf_m68k_got_entry_key *key, | |
1463 | struct elf_link_hash_entry *h, | |
cf869cce NC |
1464 | const bfd *abfd, unsigned long symndx, |
1465 | enum elf_m68k_reloc_type reloc_type) | |
7fb9f789 | 1466 | { |
cf869cce NC |
1467 | if (elf_m68k_reloc_got_type (reloc_type) == R_68K_TLS_LDM32) |
1468 | /* All TLS_LDM relocations share a single GOT entry. */ | |
1469 | { | |
1470 | key->bfd = NULL; | |
1471 | key->symndx = 0; | |
1472 | } | |
1473 | else if (h != NULL) | |
1474 | /* Global symbols are identified with their got_entry_key. */ | |
7fb9f789 NC |
1475 | { |
1476 | key->bfd = NULL; | |
1477 | key->symndx = elf_m68k_hash_entry (h)->got_entry_key; | |
1478 | BFD_ASSERT (key->symndx != 0); | |
1479 | } | |
1480 | else | |
cf869cce | 1481 | /* Local symbols are identified by BFD they appear in and symndx. */ |
7fb9f789 NC |
1482 | { |
1483 | key->bfd = abfd; | |
1484 | key->symndx = symndx; | |
1485 | } | |
cf869cce NC |
1486 | |
1487 | key->type = reloc_type; | |
7fb9f789 NC |
1488 | } |
1489 | ||
1490 | /* Calculate hash of got_entry. | |
1491 | ??? Is it good? */ | |
1492 | ||
1493 | static hashval_t | |
1494 | elf_m68k_got_entry_hash (const void *_entry) | |
1495 | { | |
1496 | const struct elf_m68k_got_entry_key *key; | |
1497 | ||
1498 | key = &((const struct elf_m68k_got_entry *) _entry)->key_; | |
1499 | ||
cf869cce NC |
1500 | return (key->symndx |
1501 | + (key->bfd != NULL ? (int) key->bfd->id : -1) | |
1502 | + elf_m68k_reloc_got_type (key->type)); | |
7fb9f789 NC |
1503 | } |
1504 | ||
1505 | /* Check if two got entries are equal. */ | |
1506 | ||
1507 | static int | |
1508 | elf_m68k_got_entry_eq (const void *_entry1, const void *_entry2) | |
1509 | { | |
1510 | const struct elf_m68k_got_entry_key *key1; | |
1511 | const struct elf_m68k_got_entry_key *key2; | |
1512 | ||
1513 | key1 = &((const struct elf_m68k_got_entry *) _entry1)->key_; | |
1514 | key2 = &((const struct elf_m68k_got_entry *) _entry2)->key_; | |
1515 | ||
1516 | return (key1->bfd == key2->bfd | |
cf869cce NC |
1517 | && key1->symndx == key2->symndx |
1518 | && (elf_m68k_reloc_got_type (key1->type) | |
1519 | == elf_m68k_reloc_got_type (key2->type))); | |
7fb9f789 NC |
1520 | } |
1521 | ||
cf869cce NC |
1522 | /* When using negative offsets, we allocate one extra R_8, one extra R_16 |
1523 | and one extra R_32 slots to simplify handling of 2-slot entries during | |
1524 | offset allocation -- hence -1 for R_8 slots and -2 for R_16 slots. */ | |
1525 | ||
1526 | /* Maximal number of R_8 slots in a single GOT. */ | |
1527 | #define ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1528 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1529 | ? (0x40 - 1) \ |
7fb9f789 NC |
1530 | : 0x20) |
1531 | ||
cf869cce NC |
1532 | /* Maximal number of R_8 and R_16 slots in a single GOT. */ |
1533 | #define ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT(INFO) \ | |
7fb9f789 | 1534 | (elf_m68k_hash_table (INFO)->use_neg_got_offsets_p \ |
cf869cce | 1535 | ? (0x4000 - 2) \ |
7fb9f789 NC |
1536 | : 0x2000) |
1537 | ||
1538 | /* SEARCH - simply search the hashtable, don't insert new entries or fail when | |
1539 | the entry cannot be found. | |
1540 | FIND_OR_CREATE - search for an existing entry, but create new if there's | |
1541 | no such. | |
1542 | MUST_FIND - search for an existing entry and assert that it exist. | |
1543 | MUST_CREATE - assert that there's no such entry and create new one. */ | |
1544 | enum elf_m68k_get_entry_howto | |
1545 | { | |
1546 | SEARCH, | |
1547 | FIND_OR_CREATE, | |
1548 | MUST_FIND, | |
1549 | MUST_CREATE | |
1550 | }; | |
1551 | ||
1552 | /* Get or create (depending on HOWTO) entry with KEY in GOT. | |
1553 | INFO is context in which memory should be allocated (can be NULL if | |
1554 | HOWTO is SEARCH or MUST_FIND). */ | |
1555 | ||
1556 | static struct elf_m68k_got_entry * | |
1557 | elf_m68k_get_got_entry (struct elf_m68k_got *got, | |
1558 | const struct elf_m68k_got_entry_key *key, | |
1559 | enum elf_m68k_get_entry_howto howto, | |
1560 | struct bfd_link_info *info) | |
1561 | { | |
1562 | struct elf_m68k_got_entry entry_; | |
1563 | struct elf_m68k_got_entry *entry; | |
1564 | void **ptr; | |
1565 | ||
1566 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1567 | ||
1568 | if (got->entries == NULL) | |
1569 | /* This is the first entry in ABFD. Initialize hashtable. */ | |
1570 | { | |
1571 | if (howto == SEARCH) | |
1572 | return NULL; | |
1573 | ||
cf869cce | 1574 | got->entries = htab_try_create (ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT |
7fb9f789 NC |
1575 | (info), |
1576 | elf_m68k_got_entry_hash, | |
1577 | elf_m68k_got_entry_eq, NULL); | |
1578 | if (got->entries == NULL) | |
1579 | { | |
1580 | bfd_set_error (bfd_error_no_memory); | |
1581 | return NULL; | |
1582 | } | |
1583 | } | |
1584 | ||
1585 | entry_.key_ = *key; | |
c83004d5 AM |
1586 | ptr = htab_find_slot (got->entries, &entry_, |
1587 | (howto == SEARCH || howto == MUST_FIND ? NO_INSERT | |
1588 | : INSERT)); | |
7fb9f789 NC |
1589 | if (ptr == NULL) |
1590 | { | |
1591 | if (howto == SEARCH) | |
1592 | /* Entry not found. */ | |
1593 | return NULL; | |
1594 | ||
c83004d5 AM |
1595 | if (howto == MUST_FIND) |
1596 | abort (); | |
1597 | ||
7fb9f789 NC |
1598 | /* We're out of memory. */ |
1599 | bfd_set_error (bfd_error_no_memory); | |
1600 | return NULL; | |
1601 | } | |
1602 | ||
1603 | if (*ptr == NULL) | |
1604 | /* We didn't find the entry and we're asked to create a new one. */ | |
1605 | { | |
c83004d5 AM |
1606 | if (howto == MUST_FIND) |
1607 | abort (); | |
1608 | ||
1609 | BFD_ASSERT (howto != SEARCH); | |
7fb9f789 NC |
1610 | |
1611 | entry = bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry)); | |
1612 | if (entry == NULL) | |
1613 | return NULL; | |
1614 | ||
1615 | /* Initialize new entry. */ | |
1616 | entry->key_ = *key; | |
1617 | ||
1618 | entry->u.s1.refcount = 0; | |
cf869cce NC |
1619 | |
1620 | /* Mark the entry as not initialized. */ | |
1621 | entry->key_.type = R_68K_max; | |
7fb9f789 NC |
1622 | |
1623 | *ptr = entry; | |
1624 | } | |
1625 | else | |
1626 | /* We found the entry. */ | |
1627 | { | |
1628 | BFD_ASSERT (howto != MUST_CREATE); | |
1629 | ||
1630 | entry = *ptr; | |
1631 | } | |
1632 | ||
1633 | return entry; | |
1634 | } | |
1635 | ||
1636 | /* Update GOT counters when merging entry of WAS type with entry of NEW type. | |
1637 | Return the value to which ENTRY's type should be set. */ | |
1638 | ||
cf869cce NC |
1639 | static enum elf_m68k_reloc_type |
1640 | elf_m68k_update_got_entry_type (struct elf_m68k_got *got, | |
1641 | enum elf_m68k_reloc_type was, | |
d3ce72d0 | 1642 | enum elf_m68k_reloc_type new_reloc) |
7fb9f789 | 1643 | { |
cf869cce NC |
1644 | enum elf_m68k_got_offset_size was_size; |
1645 | enum elf_m68k_got_offset_size new_size; | |
1646 | bfd_vma n_slots; | |
1647 | ||
1648 | if (was == R_68K_max) | |
1649 | /* The type of the entry is not initialized yet. */ | |
7fb9f789 | 1650 | { |
cf869cce NC |
1651 | /* Update all got->n_slots counters, including n_slots[R_32]. */ |
1652 | was_size = R_LAST; | |
7fb9f789 | 1653 | |
d3ce72d0 | 1654 | was = new_reloc; |
7fb9f789 | 1655 | } |
7fb9f789 | 1656 | else |
cf869cce NC |
1657 | { |
1658 | /* !!! We, probably, should emit an error rather then fail on assert | |
1659 | in such a case. */ | |
1660 | BFD_ASSERT (elf_m68k_reloc_got_type (was) | |
d3ce72d0 | 1661 | == elf_m68k_reloc_got_type (new_reloc)); |
cf869cce NC |
1662 | |
1663 | was_size = elf_m68k_reloc_got_offset_size (was); | |
1664 | } | |
1665 | ||
d3ce72d0 NC |
1666 | new_size = elf_m68k_reloc_got_offset_size (new_reloc); |
1667 | n_slots = elf_m68k_reloc_got_n_slots (new_reloc); | |
cf869cce NC |
1668 | |
1669 | while (was_size > new_size) | |
1670 | { | |
1671 | --was_size; | |
1672 | got->n_slots[was_size] += n_slots; | |
1673 | } | |
7fb9f789 | 1674 | |
d3ce72d0 | 1675 | if (new_reloc > was) |
cf869cce NC |
1676 | /* Relocations are ordered from bigger got offset size to lesser, |
1677 | so choose the relocation type with lesser offset size. */ | |
d3ce72d0 | 1678 | was = new_reloc; |
cf869cce NC |
1679 | |
1680 | return was; | |
7fb9f789 NC |
1681 | } |
1682 | ||
7fb9f789 NC |
1683 | /* Add new or update existing entry to GOT. |
1684 | H, ABFD, TYPE and SYMNDX is data for the entry. | |
1685 | INFO is a context where memory should be allocated. */ | |
1686 | ||
1687 | static struct elf_m68k_got_entry * | |
1688 | elf_m68k_add_entry_to_got (struct elf_m68k_got *got, | |
1689 | struct elf_link_hash_entry *h, | |
1690 | const bfd *abfd, | |
cf869cce NC |
1691 | enum elf_m68k_reloc_type reloc_type, |
1692 | unsigned long symndx, | |
7fb9f789 NC |
1693 | struct bfd_link_info *info) |
1694 | { | |
1695 | struct elf_m68k_got_entry_key key_; | |
1696 | struct elf_m68k_got_entry *entry; | |
1697 | ||
1698 | if (h != NULL && elf_m68k_hash_entry (h)->got_entry_key == 0) | |
1699 | elf_m68k_hash_entry (h)->got_entry_key | |
1700 | = elf_m68k_multi_got (info)->global_symndx++; | |
1701 | ||
cf869cce | 1702 | elf_m68k_init_got_entry_key (&key_, h, abfd, symndx, reloc_type); |
7fb9f789 NC |
1703 | |
1704 | entry = elf_m68k_get_got_entry (got, &key_, FIND_OR_CREATE, info); | |
1705 | if (entry == NULL) | |
1706 | return NULL; | |
1707 | ||
cf869cce NC |
1708 | /* Determine entry's type and update got->n_slots counters. */ |
1709 | entry->key_.type = elf_m68k_update_got_entry_type (got, | |
1710 | entry->key_.type, | |
1711 | reloc_type); | |
1712 | ||
7fb9f789 NC |
1713 | /* Update refcount. */ |
1714 | ++entry->u.s1.refcount; | |
1715 | ||
1716 | if (entry->u.s1.refcount == 1) | |
1717 | /* We see this entry for the first time. */ | |
1718 | { | |
1719 | if (entry->key_.bfd != NULL) | |
cf869cce | 1720 | got->local_n_slots += elf_m68k_reloc_got_n_slots (entry->key_.type); |
7fb9f789 NC |
1721 | } |
1722 | ||
cf869cce | 1723 | BFD_ASSERT (got->n_slots[R_32] >= got->local_n_slots); |
7fb9f789 | 1724 | |
cf869cce NC |
1725 | if ((got->n_slots[R_8] |
1726 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1727 | || (got->n_slots[R_16] | |
1728 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1729 | /* This BFD has too many relocation. */ |
1730 | { | |
cf869cce | 1731 | if (got->n_slots[R_8] > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) |
695344c0 | 1732 | /* xgettext:c-format */ |
871b3ab2 | 1733 | _bfd_error_handler (_("%pB: GOT overflow: " |
38f14ab8 | 1734 | "number of relocations with 8-bit " |
4eca0228 AM |
1735 | "offset > %d"), |
1736 | abfd, | |
1737 | ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)); | |
7fb9f789 | 1738 | else |
695344c0 | 1739 | /* xgettext:c-format */ |
871b3ab2 | 1740 | _bfd_error_handler (_("%pB: GOT overflow: " |
38f14ab8 | 1741 | "number of relocations with 8- or 16-bit " |
4eca0228 AM |
1742 | "offset > %d"), |
1743 | abfd, | |
1744 | ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)); | |
7fb9f789 NC |
1745 | |
1746 | return NULL; | |
1747 | } | |
1748 | ||
1749 | return entry; | |
1750 | } | |
1751 | ||
1752 | /* Compute the hash value of the bfd in a bfd2got hash entry. */ | |
1753 | ||
1754 | static hashval_t | |
1755 | elf_m68k_bfd2got_entry_hash (const void *entry) | |
1756 | { | |
1757 | const struct elf_m68k_bfd2got_entry *e; | |
1758 | ||
1759 | e = (const struct elf_m68k_bfd2got_entry *) entry; | |
1760 | ||
1761 | return e->bfd->id; | |
1762 | } | |
1763 | ||
1764 | /* Check whether two hash entries have the same bfd. */ | |
1765 | ||
1766 | static int | |
1767 | elf_m68k_bfd2got_entry_eq (const void *entry1, const void *entry2) | |
1768 | { | |
1769 | const struct elf_m68k_bfd2got_entry *e1; | |
1770 | const struct elf_m68k_bfd2got_entry *e2; | |
1771 | ||
1772 | e1 = (const struct elf_m68k_bfd2got_entry *) entry1; | |
1773 | e2 = (const struct elf_m68k_bfd2got_entry *) entry2; | |
1774 | ||
1775 | return e1->bfd == e2->bfd; | |
1776 | } | |
1777 | ||
1778 | /* Destruct a bfd2got entry. */ | |
1779 | ||
1780 | static void | |
1781 | elf_m68k_bfd2got_entry_del (void *_entry) | |
1782 | { | |
1783 | struct elf_m68k_bfd2got_entry *entry; | |
1784 | ||
1785 | entry = (struct elf_m68k_bfd2got_entry *) _entry; | |
1786 | ||
1787 | BFD_ASSERT (entry->got != NULL); | |
1788 | elf_m68k_clear_got (entry->got); | |
1789 | } | |
1790 | ||
1791 | /* Find existing or create new (depending on HOWTO) bfd2got entry in | |
1792 | MULTI_GOT. ABFD is the bfd we need a GOT for. INFO is a context where | |
1793 | memory should be allocated. */ | |
1794 | ||
1795 | static struct elf_m68k_bfd2got_entry * | |
1796 | elf_m68k_get_bfd2got_entry (struct elf_m68k_multi_got *multi_got, | |
1797 | const bfd *abfd, | |
1798 | enum elf_m68k_get_entry_howto howto, | |
1799 | struct bfd_link_info *info) | |
1800 | { | |
1801 | struct elf_m68k_bfd2got_entry entry_; | |
1802 | void **ptr; | |
1803 | struct elf_m68k_bfd2got_entry *entry; | |
1804 | ||
1805 | BFD_ASSERT ((info == NULL) == (howto == SEARCH || howto == MUST_FIND)); | |
1806 | ||
1807 | if (multi_got->bfd2got == NULL) | |
1808 | /* This is the first GOT. Initialize bfd2got. */ | |
1809 | { | |
1810 | if (howto == SEARCH) | |
1811 | return NULL; | |
1812 | ||
1813 | multi_got->bfd2got = htab_try_create (1, elf_m68k_bfd2got_entry_hash, | |
1814 | elf_m68k_bfd2got_entry_eq, | |
1815 | elf_m68k_bfd2got_entry_del); | |
1816 | if (multi_got->bfd2got == NULL) | |
1817 | { | |
1818 | bfd_set_error (bfd_error_no_memory); | |
1819 | return NULL; | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | entry_.bfd = abfd; | |
c83004d5 AM |
1824 | ptr = htab_find_slot (multi_got->bfd2got, &entry_, |
1825 | (howto == SEARCH || howto == MUST_FIND ? NO_INSERT | |
1826 | : INSERT)); | |
7fb9f789 NC |
1827 | if (ptr == NULL) |
1828 | { | |
1829 | if (howto == SEARCH) | |
1830 | /* Entry not found. */ | |
1831 | return NULL; | |
1832 | ||
c83004d5 AM |
1833 | if (howto == MUST_FIND) |
1834 | abort (); | |
1835 | ||
7fb9f789 NC |
1836 | /* We're out of memory. */ |
1837 | bfd_set_error (bfd_error_no_memory); | |
1838 | return NULL; | |
1839 | } | |
1840 | ||
1841 | if (*ptr == NULL) | |
1842 | /* Entry was not found. Create new one. */ | |
1843 | { | |
c83004d5 AM |
1844 | if (howto == MUST_FIND) |
1845 | abort (); | |
1846 | ||
1847 | BFD_ASSERT (howto != SEARCH); | |
7fb9f789 NC |
1848 | |
1849 | entry = ((struct elf_m68k_bfd2got_entry *) | |
1850 | bfd_alloc (elf_hash_table (info)->dynobj, sizeof (*entry))); | |
1851 | if (entry == NULL) | |
1852 | return NULL; | |
1853 | ||
1854 | entry->bfd = abfd; | |
1855 | ||
1856 | entry->got = elf_m68k_create_empty_got (info); | |
1857 | if (entry->got == NULL) | |
1858 | return NULL; | |
1859 | ||
1860 | *ptr = entry; | |
1861 | } | |
1862 | else | |
1863 | { | |
1864 | BFD_ASSERT (howto != MUST_CREATE); | |
1865 | ||
1866 | /* Return existing entry. */ | |
1867 | entry = *ptr; | |
1868 | } | |
1869 | ||
1870 | return entry; | |
1871 | } | |
1872 | ||
1873 | struct elf_m68k_can_merge_gots_arg | |
1874 | { | |
1875 | /* A current_got that we constructing a DIFF against. */ | |
1876 | struct elf_m68k_got *big; | |
1877 | ||
1878 | /* GOT holding entries not present or that should be changed in | |
1879 | BIG. */ | |
1880 | struct elf_m68k_got *diff; | |
1881 | ||
1882 | /* Context where to allocate memory. */ | |
1883 | struct bfd_link_info *info; | |
1884 | ||
1885 | /* Error flag. */ | |
1886 | bfd_boolean error_p; | |
1887 | }; | |
1888 | ||
1889 | /* Process a single entry from the small GOT to see if it should be added | |
1890 | or updated in the big GOT. */ | |
1891 | ||
1892 | static int | |
1893 | elf_m68k_can_merge_gots_1 (void **_entry_ptr, void *_arg) | |
1894 | { | |
1895 | const struct elf_m68k_got_entry *entry1; | |
1896 | struct elf_m68k_can_merge_gots_arg *arg; | |
1897 | const struct elf_m68k_got_entry *entry2; | |
cf869cce | 1898 | enum elf_m68k_reloc_type type; |
7fb9f789 NC |
1899 | |
1900 | entry1 = (const struct elf_m68k_got_entry *) *_entry_ptr; | |
1901 | arg = (struct elf_m68k_can_merge_gots_arg *) _arg; | |
1902 | ||
1903 | entry2 = elf_m68k_get_got_entry (arg->big, &entry1->key_, SEARCH, NULL); | |
1904 | ||
1905 | if (entry2 != NULL) | |
cf869cce | 1906 | /* We found an existing entry. Check if we should update it. */ |
7fb9f789 | 1907 | { |
cf869cce NC |
1908 | type = elf_m68k_update_got_entry_type (arg->diff, |
1909 | entry2->key_.type, | |
1910 | entry1->key_.type); | |
7fb9f789 | 1911 | |
cf869cce | 1912 | if (type == entry2->key_.type) |
7fb9f789 NC |
1913 | /* ENTRY1 doesn't update data in ENTRY2. Skip it. |
1914 | To skip creation of difference entry we use the type, | |
1915 | which we won't see in GOT entries for sure. */ | |
cf869cce | 1916 | type = R_68K_max; |
7fb9f789 NC |
1917 | } |
1918 | else | |
cf869cce | 1919 | /* We didn't find the entry. Add entry1 to DIFF. */ |
7fb9f789 | 1920 | { |
cf869cce | 1921 | BFD_ASSERT (entry1->key_.type != R_68K_max); |
7fb9f789 | 1922 | |
cf869cce NC |
1923 | type = elf_m68k_update_got_entry_type (arg->diff, |
1924 | R_68K_max, entry1->key_.type); | |
7fb9f789 | 1925 | |
7fb9f789 | 1926 | if (entry1->key_.bfd != NULL) |
cf869cce | 1927 | arg->diff->local_n_slots += elf_m68k_reloc_got_n_slots (type); |
7fb9f789 NC |
1928 | } |
1929 | ||
cf869cce | 1930 | if (type != R_68K_max) |
7fb9f789 NC |
1931 | /* Create an entry in DIFF. */ |
1932 | { | |
1933 | struct elf_m68k_got_entry *entry; | |
1934 | ||
1935 | entry = elf_m68k_get_got_entry (arg->diff, &entry1->key_, MUST_CREATE, | |
1936 | arg->info); | |
1937 | if (entry == NULL) | |
1938 | { | |
1939 | arg->error_p = TRUE; | |
1940 | return 0; | |
1941 | } | |
1942 | ||
cf869cce | 1943 | entry->key_.type = type; |
7fb9f789 NC |
1944 | } |
1945 | ||
1946 | return 1; | |
1947 | } | |
1948 | ||
1949 | /* Return TRUE if SMALL GOT can be added to BIG GOT without overflowing it. | |
1950 | Construct DIFF GOT holding the entries which should be added or updated | |
1951 | in BIG GOT to accumulate information from SMALL. | |
1952 | INFO is the context where memory should be allocated. */ | |
1953 | ||
1954 | static bfd_boolean | |
1955 | elf_m68k_can_merge_gots (struct elf_m68k_got *big, | |
1956 | const struct elf_m68k_got *small, | |
1957 | struct bfd_link_info *info, | |
1958 | struct elf_m68k_got *diff) | |
1959 | { | |
1960 | struct elf_m68k_can_merge_gots_arg arg_; | |
1961 | ||
1962 | BFD_ASSERT (small->offset == (bfd_vma) -1); | |
1963 | ||
1964 | arg_.big = big; | |
1965 | arg_.diff = diff; | |
1966 | arg_.info = info; | |
1967 | arg_.error_p = FALSE; | |
1968 | htab_traverse_noresize (small->entries, elf_m68k_can_merge_gots_1, &arg_); | |
1969 | if (arg_.error_p) | |
1970 | { | |
1971 | diff->offset = 0; | |
1972 | return FALSE; | |
1973 | } | |
1974 | ||
1975 | /* Check for overflow. */ | |
cf869cce NC |
1976 | if ((big->n_slots[R_8] + arg_.diff->n_slots[R_8] |
1977 | > ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
1978 | || (big->n_slots[R_16] + arg_.diff->n_slots[R_16] | |
1979 | > ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info))) | |
7fb9f789 NC |
1980 | return FALSE; |
1981 | ||
1982 | return TRUE; | |
1983 | } | |
1984 | ||
1985 | struct elf_m68k_merge_gots_arg | |
1986 | { | |
1987 | /* The BIG got. */ | |
1988 | struct elf_m68k_got *big; | |
1989 | ||
1990 | /* Context where memory should be allocated. */ | |
1991 | struct bfd_link_info *info; | |
1992 | ||
1993 | /* Error flag. */ | |
1994 | bfd_boolean error_p; | |
1995 | }; | |
1996 | ||
1997 | /* Process a single entry from DIFF got. Add or update corresponding | |
1998 | entry in the BIG got. */ | |
1999 | ||
2000 | static int | |
2001 | elf_m68k_merge_gots_1 (void **entry_ptr, void *_arg) | |
2002 | { | |
2003 | const struct elf_m68k_got_entry *from; | |
2004 | struct elf_m68k_merge_gots_arg *arg; | |
2005 | struct elf_m68k_got_entry *to; | |
2006 | ||
2007 | from = (const struct elf_m68k_got_entry *) *entry_ptr; | |
2008 | arg = (struct elf_m68k_merge_gots_arg *) _arg; | |
2009 | ||
2010 | to = elf_m68k_get_got_entry (arg->big, &from->key_, FIND_OR_CREATE, | |
2011 | arg->info); | |
2012 | if (to == NULL) | |
2013 | { | |
2014 | arg->error_p = TRUE; | |
2015 | return 0; | |
2016 | } | |
2017 | ||
2018 | BFD_ASSERT (to->u.s1.refcount == 0); | |
2019 | /* All we need to merge is TYPE. */ | |
cf869cce | 2020 | to->key_.type = from->key_.type; |
7fb9f789 NC |
2021 | |
2022 | return 1; | |
2023 | } | |
2024 | ||
2025 | /* Merge data from DIFF to BIG. INFO is context where memory should be | |
2026 | allocated. */ | |
2027 | ||
2028 | static bfd_boolean | |
2029 | elf_m68k_merge_gots (struct elf_m68k_got *big, | |
2030 | struct elf_m68k_got *diff, | |
2031 | struct bfd_link_info *info) | |
2032 | { | |
2033 | if (diff->entries != NULL) | |
2034 | /* DIFF is not empty. Merge it into BIG GOT. */ | |
2035 | { | |
2036 | struct elf_m68k_merge_gots_arg arg_; | |
2037 | ||
2038 | /* Merge entries. */ | |
2039 | arg_.big = big; | |
2040 | arg_.info = info; | |
2041 | arg_.error_p = FALSE; | |
2042 | htab_traverse_noresize (diff->entries, elf_m68k_merge_gots_1, &arg_); | |
2043 | if (arg_.error_p) | |
2044 | return FALSE; | |
2045 | ||
2046 | /* Merge counters. */ | |
cf869cce NC |
2047 | big->n_slots[R_8] += diff->n_slots[R_8]; |
2048 | big->n_slots[R_16] += diff->n_slots[R_16]; | |
2049 | big->n_slots[R_32] += diff->n_slots[R_32]; | |
2050 | big->local_n_slots += diff->local_n_slots; | |
7fb9f789 NC |
2051 | } |
2052 | else | |
2053 | /* DIFF is empty. */ | |
2054 | { | |
cf869cce NC |
2055 | BFD_ASSERT (diff->n_slots[R_8] == 0); |
2056 | BFD_ASSERT (diff->n_slots[R_16] == 0); | |
2057 | BFD_ASSERT (diff->n_slots[R_32] == 0); | |
2058 | BFD_ASSERT (diff->local_n_slots == 0); | |
7fb9f789 NC |
2059 | } |
2060 | ||
2061 | BFD_ASSERT (!elf_m68k_hash_table (info)->allow_multigot_p | |
cf869cce NC |
2062 | || ((big->n_slots[R_8] |
2063 | <= ELF_M68K_R_8_MAX_N_SLOTS_IN_GOT (info)) | |
2064 | && (big->n_slots[R_16] | |
2065 | <= ELF_M68K_R_8_16_MAX_N_SLOTS_IN_GOT (info)))); | |
7fb9f789 NC |
2066 | |
2067 | return TRUE; | |
2068 | } | |
2069 | ||
2070 | struct elf_m68k_finalize_got_offsets_arg | |
2071 | { | |
cf869cce NC |
2072 | /* Ranges of the offsets for GOT entries. |
2073 | R_x entries receive offsets between offset1[R_x] and offset2[R_x]. | |
2074 | R_x is R_8, R_16 and R_32. */ | |
2075 | bfd_vma *offset1; | |
2076 | bfd_vma *offset2; | |
7fb9f789 NC |
2077 | |
2078 | /* Mapping from global symndx to global symbols. | |
2079 | This is used to build lists of got entries for global symbols. */ | |
2080 | struct elf_m68k_link_hash_entry **symndx2h; | |
cf869cce NC |
2081 | |
2082 | bfd_vma n_ldm_entries; | |
7fb9f789 NC |
2083 | }; |
2084 | ||
2085 | /* Assign ENTRY an offset. Build list of GOT entries for global symbols | |
2086 | along the way. */ | |
2087 | ||
2088 | static int | |
2089 | elf_m68k_finalize_got_offsets_1 (void **entry_ptr, void *_arg) | |
2090 | { | |
2091 | struct elf_m68k_got_entry *entry; | |
2092 | struct elf_m68k_finalize_got_offsets_arg *arg; | |
2093 | ||
cf869cce NC |
2094 | enum elf_m68k_got_offset_size got_offset_size; |
2095 | bfd_vma entry_size; | |
2096 | ||
7fb9f789 NC |
2097 | entry = (struct elf_m68k_got_entry *) *entry_ptr; |
2098 | arg = (struct elf_m68k_finalize_got_offsets_arg *) _arg; | |
2099 | ||
2100 | /* This should be a fresh entry created in elf_m68k_can_merge_gots. */ | |
2101 | BFD_ASSERT (entry->u.s1.refcount == 0); | |
2102 | ||
cf869cce NC |
2103 | /* Get GOT offset size for the entry . */ |
2104 | got_offset_size = elf_m68k_reloc_got_offset_size (entry->key_.type); | |
7fb9f789 | 2105 | |
cf869cce NC |
2106 | /* Calculate entry size in bytes. */ |
2107 | entry_size = 4 * elf_m68k_reloc_got_n_slots (entry->key_.type); | |
7fb9f789 | 2108 | |
cf869cce NC |
2109 | /* Check if we should switch to negative range of the offsets. */ |
2110 | if (arg->offset1[got_offset_size] + entry_size | |
2111 | > arg->offset2[got_offset_size]) | |
2112 | { | |
2113 | /* Verify that this is the only switch to negative range for | |
2114 | got_offset_size. If this assertion fails, then we've miscalculated | |
2115 | range for got_offset_size entries in | |
2116 | elf_m68k_finalize_got_offsets. */ | |
2117 | BFD_ASSERT (arg->offset2[got_offset_size] | |
2118 | != arg->offset2[-(int) got_offset_size - 1]); | |
2119 | ||
2120 | /* Switch. */ | |
2121 | arg->offset1[got_offset_size] = arg->offset1[-(int) got_offset_size - 1]; | |
2122 | arg->offset2[got_offset_size] = arg->offset2[-(int) got_offset_size - 1]; | |
2123 | ||
2124 | /* Verify that now we have enough room for the entry. */ | |
2125 | BFD_ASSERT (arg->offset1[got_offset_size] + entry_size | |
2126 | <= arg->offset2[got_offset_size]); | |
7fb9f789 NC |
2127 | } |
2128 | ||
cf869cce NC |
2129 | /* Assign offset to entry. */ |
2130 | entry->u.s2.offset = arg->offset1[got_offset_size]; | |
2131 | arg->offset1[got_offset_size] += entry_size; | |
2132 | ||
7fb9f789 NC |
2133 | if (entry->key_.bfd == NULL) |
2134 | /* Hook up this entry into the list of got_entries of H. */ | |
2135 | { | |
2136 | struct elf_m68k_link_hash_entry *h; | |
2137 | ||
7fb9f789 | 2138 | h = arg->symndx2h[entry->key_.symndx]; |
cf869cce NC |
2139 | if (h != NULL) |
2140 | { | |
2141 | entry->u.s2.next = h->glist; | |
2142 | h->glist = entry; | |
2143 | } | |
2144 | else | |
2145 | /* This should be the entry for TLS_LDM relocation then. */ | |
2146 | { | |
2147 | BFD_ASSERT ((elf_m68k_reloc_got_type (entry->key_.type) | |
2148 | == R_68K_TLS_LDM32) | |
2149 | && entry->key_.symndx == 0); | |
7fb9f789 | 2150 | |
cf869cce NC |
2151 | ++arg->n_ldm_entries; |
2152 | } | |
7fb9f789 NC |
2153 | } |
2154 | else | |
2155 | /* This entry is for local symbol. */ | |
2156 | entry->u.s2.next = NULL; | |
2157 | ||
2158 | return 1; | |
2159 | } | |
2160 | ||
2161 | /* Assign offsets within GOT. USE_NEG_GOT_OFFSETS_P indicates if we | |
2162 | should use negative offsets. | |
2163 | Build list of GOT entries for global symbols along the way. | |
2164 | SYMNDX2H is mapping from global symbol indices to actual | |
cf869cce NC |
2165 | global symbols. |
2166 | Return offset at which next GOT should start. */ | |
7fb9f789 NC |
2167 | |
2168 | static void | |
2169 | elf_m68k_finalize_got_offsets (struct elf_m68k_got *got, | |
2170 | bfd_boolean use_neg_got_offsets_p, | |
cf869cce NC |
2171 | struct elf_m68k_link_hash_entry **symndx2h, |
2172 | bfd_vma *final_offset, bfd_vma *n_ldm_entries) | |
7fb9f789 NC |
2173 | { |
2174 | struct elf_m68k_finalize_got_offsets_arg arg_; | |
cf869cce NC |
2175 | bfd_vma offset1_[2 * R_LAST]; |
2176 | bfd_vma offset2_[2 * R_LAST]; | |
2177 | int i; | |
2178 | bfd_vma start_offset; | |
7fb9f789 NC |
2179 | |
2180 | BFD_ASSERT (got->offset != (bfd_vma) -1); | |
2181 | ||
2182 | /* We set entry offsets relative to the .got section (and not the | |
2183 | start of a particular GOT), so that we can use them in | |
cf869cce | 2184 | finish_dynamic_symbol without needing to know the GOT which they come |
7fb9f789 NC |
2185 | from. */ |
2186 | ||
cf869cce NC |
2187 | /* Put offset1 in the middle of offset1_, same for offset2. */ |
2188 | arg_.offset1 = offset1_ + R_LAST; | |
2189 | arg_.offset2 = offset2_ + R_LAST; | |
2190 | ||
2191 | start_offset = got->offset; | |
2192 | ||
7fb9f789 | 2193 | if (use_neg_got_offsets_p) |
cf869cce NC |
2194 | /* Setup both negative and positive ranges for R_8, R_16 and R_32. */ |
2195 | i = -(int) R_32 - 1; | |
2196 | else | |
2197 | /* Setup positives ranges for R_8, R_16 and R_32. */ | |
2198 | i = (int) R_8; | |
2199 | ||
2200 | for (; i <= (int) R_32; ++i) | |
7fb9f789 | 2201 | { |
cf869cce | 2202 | int j; |
7fb9f789 NC |
2203 | size_t n; |
2204 | ||
cf869cce NC |
2205 | /* Set beginning of the range of offsets I. */ |
2206 | arg_.offset1[i] = start_offset; | |
7fb9f789 | 2207 | |
cf869cce NC |
2208 | /* Calculate number of slots that require I offsets. */ |
2209 | j = (i >= 0) ? i : -i - 1; | |
2210 | n = (j >= 1) ? got->n_slots[j - 1] : 0; | |
2211 | n = got->n_slots[j] - n; | |
7fb9f789 | 2212 | |
cf869cce NC |
2213 | if (use_neg_got_offsets_p && n != 0) |
2214 | { | |
2215 | if (i < 0) | |
2216 | /* We first fill the positive side of the range, so we might | |
2217 | end up with one empty slot at that side when we can't fit | |
2218 | whole 2-slot entry. Account for that at negative side of | |
2219 | the interval with one additional entry. */ | |
2220 | n = n / 2 + 1; | |
2221 | else | |
2222 | /* When the number of slots is odd, make positive side of the | |
2223 | range one entry bigger. */ | |
2224 | n = (n + 1) / 2; | |
2225 | } | |
2226 | ||
2227 | /* N is the number of slots that require I offsets. | |
2228 | Calculate length of the range for I offsets. */ | |
2229 | n = 4 * n; | |
7fb9f789 | 2230 | |
cf869cce NC |
2231 | /* Set end of the range. */ |
2232 | arg_.offset2[i] = start_offset + n; | |
7fb9f789 | 2233 | |
cf869cce | 2234 | start_offset = arg_.offset2[i]; |
7fb9f789 NC |
2235 | } |
2236 | ||
cf869cce NC |
2237 | if (!use_neg_got_offsets_p) |
2238 | /* Make sure that if we try to switch to negative offsets in | |
2239 | elf_m68k_finalize_got_offsets_1, the assert therein will catch | |
2240 | the bug. */ | |
2241 | for (i = R_8; i <= R_32; ++i) | |
2242 | arg_.offset2[-i - 1] = arg_.offset2[i]; | |
7fb9f789 | 2243 | |
cf869cce NC |
2244 | /* Setup got->offset. offset1[R_8] is either in the middle or at the |
2245 | beginning of GOT depending on use_neg_got_offsets_p. */ | |
2246 | got->offset = arg_.offset1[R_8]; | |
7fb9f789 | 2247 | |
cf869cce NC |
2248 | arg_.symndx2h = symndx2h; |
2249 | arg_.n_ldm_entries = 0; | |
7fb9f789 | 2250 | |
cf869cce NC |
2251 | /* Assign offsets. */ |
2252 | htab_traverse (got->entries, elf_m68k_finalize_got_offsets_1, &arg_); | |
7fb9f789 | 2253 | |
cf869cce NC |
2254 | /* Check offset ranges we have actually assigned. */ |
2255 | for (i = (int) R_8; i <= (int) R_32; ++i) | |
2256 | BFD_ASSERT (arg_.offset2[i] - arg_.offset1[i] <= 4); | |
7fb9f789 | 2257 | |
cf869cce NC |
2258 | *final_offset = start_offset; |
2259 | *n_ldm_entries = arg_.n_ldm_entries; | |
7fb9f789 NC |
2260 | } |
2261 | ||
2262 | struct elf_m68k_partition_multi_got_arg | |
2263 | { | |
2264 | /* The GOT we are adding entries to. Aka big got. */ | |
2265 | struct elf_m68k_got *current_got; | |
2266 | ||
2267 | /* Offset to assign the next CURRENT_GOT. */ | |
2268 | bfd_vma offset; | |
2269 | ||
2270 | /* Context where memory should be allocated. */ | |
2271 | struct bfd_link_info *info; | |
2272 | ||
cf869cce | 2273 | /* Total number of slots in the .got section. |
7fb9f789 | 2274 | This is used to calculate size of the .got and .rela.got sections. */ |
cf869cce | 2275 | bfd_vma n_slots; |
7fb9f789 | 2276 | |
cf869cce NC |
2277 | /* Difference in numbers of allocated slots in the .got section |
2278 | and necessary relocations in the .rela.got section. | |
7fb9f789 | 2279 | This is used to calculate size of the .rela.got section. */ |
cf869cce | 2280 | bfd_vma slots_relas_diff; |
7fb9f789 NC |
2281 | |
2282 | /* Error flag. */ | |
2283 | bfd_boolean error_p; | |
2284 | ||
2285 | /* Mapping from global symndx to global symbols. | |
2286 | This is used to build lists of got entries for global symbols. */ | |
2287 | struct elf_m68k_link_hash_entry **symndx2h; | |
2288 | }; | |
2289 | ||
cf869cce NC |
2290 | static void |
2291 | elf_m68k_partition_multi_got_2 (struct elf_m68k_partition_multi_got_arg *arg) | |
2292 | { | |
2293 | bfd_vma n_ldm_entries; | |
2294 | ||
2295 | elf_m68k_finalize_got_offsets (arg->current_got, | |
2296 | (elf_m68k_hash_table (arg->info) | |
2297 | ->use_neg_got_offsets_p), | |
2298 | arg->symndx2h, | |
2299 | &arg->offset, &n_ldm_entries); | |
2300 | ||
2301 | arg->n_slots += arg->current_got->n_slots[R_32]; | |
2302 | ||
0e1862bb | 2303 | if (!bfd_link_pic (arg->info)) |
cf869cce NC |
2304 | /* If we are generating a shared object, we need to |
2305 | output a R_68K_RELATIVE reloc so that the dynamic | |
2306 | linker can adjust this GOT entry. Overwise we | |
2307 | don't need space in .rela.got for local symbols. */ | |
2308 | arg->slots_relas_diff += arg->current_got->local_n_slots; | |
2309 | ||
2310 | /* @LDM relocations require a 2-slot GOT entry, but only | |
2311 | one relocation. Account for that. */ | |
2312 | arg->slots_relas_diff += n_ldm_entries; | |
2313 | ||
2314 | BFD_ASSERT (arg->slots_relas_diff <= arg->n_slots); | |
2315 | } | |
2316 | ||
2317 | ||
7fb9f789 NC |
2318 | /* Process a single BFD2GOT entry and either merge GOT to CURRENT_GOT |
2319 | or start a new CURRENT_GOT. */ | |
2320 | ||
2321 | static int | |
2322 | elf_m68k_partition_multi_got_1 (void **_entry, void *_arg) | |
2323 | { | |
2324 | struct elf_m68k_bfd2got_entry *entry; | |
2325 | struct elf_m68k_partition_multi_got_arg *arg; | |
2326 | struct elf_m68k_got *got; | |
7fb9f789 NC |
2327 | struct elf_m68k_got diff_; |
2328 | struct elf_m68k_got *diff; | |
2329 | ||
2330 | entry = (struct elf_m68k_bfd2got_entry *) *_entry; | |
2331 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2332 | ||
2333 | got = entry->got; | |
2334 | BFD_ASSERT (got != NULL); | |
2335 | BFD_ASSERT (got->offset == (bfd_vma) -1); | |
2336 | ||
2337 | diff = NULL; | |
2338 | ||
2339 | if (arg->current_got != NULL) | |
2340 | /* Construct diff. */ | |
2341 | { | |
2342 | diff = &diff_; | |
cf869cce | 2343 | elf_m68k_init_got (diff); |
7fb9f789 NC |
2344 | |
2345 | if (!elf_m68k_can_merge_gots (arg->current_got, got, arg->info, diff)) | |
2346 | { | |
2347 | if (diff->offset == 0) | |
2348 | /* Offset set to 0 in the diff_ indicates an error. */ | |
2349 | { | |
2350 | arg->error_p = TRUE; | |
2351 | goto final_return; | |
2352 | } | |
2353 | ||
2354 | if (elf_m68k_hash_table (arg->info)->allow_multigot_p) | |
2355 | { | |
2356 | elf_m68k_clear_got (diff); | |
cf869cce | 2357 | /* Schedule to finish up current_got and start new one. */ |
7fb9f789 NC |
2358 | diff = NULL; |
2359 | } | |
2360 | /* else | |
2361 | Merge GOTs no matter what. If big GOT overflows, | |
2362 | we'll fail in relocate_section due to truncated relocations. | |
2363 | ||
2364 | ??? May be fail earlier? E.g., in can_merge_gots. */ | |
2365 | } | |
2366 | } | |
2367 | else | |
2368 | /* Diff of got against empty current_got is got itself. */ | |
2369 | { | |
cf869cce | 2370 | /* Create empty current_got to put subsequent GOTs to. */ |
7fb9f789 NC |
2371 | arg->current_got = elf_m68k_create_empty_got (arg->info); |
2372 | if (arg->current_got == NULL) | |
2373 | { | |
2374 | arg->error_p = TRUE; | |
2375 | goto final_return; | |
2376 | } | |
2377 | ||
2378 | arg->current_got->offset = arg->offset; | |
2379 | ||
2380 | diff = got; | |
2381 | } | |
2382 | ||
7fb9f789 NC |
2383 | if (diff != NULL) |
2384 | { | |
cf869cce | 2385 | if (!elf_m68k_merge_gots (arg->current_got, diff, arg->info)) |
7fb9f789 NC |
2386 | { |
2387 | arg->error_p = TRUE; | |
2388 | goto final_return; | |
2389 | } | |
2390 | ||
2391 | /* Now we can free GOT. */ | |
2392 | elf_m68k_clear_got (got); | |
2393 | ||
cf869cce | 2394 | entry->got = arg->current_got; |
7fb9f789 NC |
2395 | } |
2396 | else | |
2397 | { | |
7fb9f789 | 2398 | /* Finish up current_got. */ |
cf869cce | 2399 | elf_m68k_partition_multi_got_2 (arg); |
7fb9f789 | 2400 | |
cf869cce NC |
2401 | /* Schedule to start a new current_got. */ |
2402 | arg->current_got = NULL; | |
7fb9f789 NC |
2403 | |
2404 | /* Retry. */ | |
2405 | if (!elf_m68k_partition_multi_got_1 (_entry, _arg)) | |
2406 | { | |
2407 | BFD_ASSERT (arg->error_p); | |
2408 | goto final_return; | |
2409 | } | |
2410 | } | |
2411 | ||
2412 | final_return: | |
2413 | if (diff != NULL) | |
2414 | elf_m68k_clear_got (diff); | |
2415 | ||
535b785f | 2416 | return !arg->error_p; |
7fb9f789 NC |
2417 | } |
2418 | ||
2419 | /* Helper function to build symndx2h mapping. */ | |
2420 | ||
2421 | static bfd_boolean | |
2422 | elf_m68k_init_symndx2h_1 (struct elf_link_hash_entry *_h, | |
2423 | void *_arg) | |
2424 | { | |
2425 | struct elf_m68k_link_hash_entry *h; | |
2426 | ||
2427 | h = elf_m68k_hash_entry (_h); | |
2428 | ||
2429 | if (h->got_entry_key != 0) | |
2430 | /* H has at least one entry in the GOT. */ | |
2431 | { | |
2432 | struct elf_m68k_partition_multi_got_arg *arg; | |
2433 | ||
2434 | arg = (struct elf_m68k_partition_multi_got_arg *) _arg; | |
2435 | ||
2436 | BFD_ASSERT (arg->symndx2h[h->got_entry_key] == NULL); | |
2437 | arg->symndx2h[h->got_entry_key] = h; | |
2438 | } | |
2439 | ||
2440 | return TRUE; | |
2441 | } | |
2442 | ||
2443 | /* Merge GOTs of some BFDs, assign offsets to GOT entries and build | |
2444 | lists of GOT entries for global symbols. | |
2445 | Calculate sizes of .got and .rela.got sections. */ | |
2446 | ||
2447 | static bfd_boolean | |
2448 | elf_m68k_partition_multi_got (struct bfd_link_info *info) | |
2449 | { | |
2450 | struct elf_m68k_multi_got *multi_got; | |
2451 | struct elf_m68k_partition_multi_got_arg arg_; | |
2452 | ||
2453 | multi_got = elf_m68k_multi_got (info); | |
2454 | ||
2455 | arg_.current_got = NULL; | |
2456 | arg_.offset = 0; | |
2457 | arg_.info = info; | |
cf869cce NC |
2458 | arg_.n_slots = 0; |
2459 | arg_.slots_relas_diff = 0; | |
7fb9f789 NC |
2460 | arg_.error_p = FALSE; |
2461 | ||
2462 | if (multi_got->bfd2got != NULL) | |
2463 | { | |
2464 | /* Initialize symndx2h mapping. */ | |
2465 | { | |
2466 | arg_.symndx2h = bfd_zmalloc (multi_got->global_symndx | |
2467 | * sizeof (*arg_.symndx2h)); | |
2468 | if (arg_.symndx2h == NULL) | |
2469 | return FALSE; | |
2470 | ||
2471 | elf_link_hash_traverse (elf_hash_table (info), | |
2472 | elf_m68k_init_symndx2h_1, &arg_); | |
2473 | } | |
2474 | ||
2475 | /* Partition. */ | |
2476 | htab_traverse (multi_got->bfd2got, elf_m68k_partition_multi_got_1, | |
2477 | &arg_); | |
2478 | if (arg_.error_p) | |
2479 | { | |
2480 | free (arg_.symndx2h); | |
2481 | arg_.symndx2h = NULL; | |
2482 | ||
2483 | return FALSE; | |
2484 | } | |
2485 | ||
2486 | /* Finish up last current_got. */ | |
cf869cce | 2487 | elf_m68k_partition_multi_got_2 (&arg_); |
7fb9f789 NC |
2488 | |
2489 | free (arg_.symndx2h); | |
266abb8f | 2490 | } |
7fb9f789 NC |
2491 | |
2492 | if (elf_hash_table (info)->dynobj != NULL) | |
2493 | /* Set sizes of .got and .rela.got sections. */ | |
266abb8f | 2494 | { |
7fb9f789 | 2495 | asection *s; |
425c6cb0 | 2496 | |
ce558b89 | 2497 | s = elf_hash_table (info)->sgot; |
7fb9f789 | 2498 | if (s != NULL) |
cf869cce | 2499 | s->size = arg_.offset; |
425c6cb0 | 2500 | else |
cf869cce | 2501 | BFD_ASSERT (arg_.offset == 0); |
425c6cb0 | 2502 | |
cf869cce NC |
2503 | BFD_ASSERT (arg_.slots_relas_diff <= arg_.n_slots); |
2504 | arg_.n_slots -= arg_.slots_relas_diff; | |
7fb9f789 | 2505 | |
ce558b89 | 2506 | s = elf_hash_table (info)->srelgot; |
7fb9f789 | 2507 | if (s != NULL) |
cf869cce | 2508 | s->size = arg_.n_slots * sizeof (Elf32_External_Rela); |
3bdcfdf4 | 2509 | else |
cf869cce | 2510 | BFD_ASSERT (arg_.n_slots == 0); |
9e1281c7 | 2511 | } |
7fb9f789 NC |
2512 | else |
2513 | BFD_ASSERT (multi_got->bfd2got == NULL); | |
9e1281c7 | 2514 | |
b34976b6 | 2515 | return TRUE; |
9e1281c7 CM |
2516 | } |
2517 | ||
7fb9f789 NC |
2518 | /* Copy any information related to dynamic linking from a pre-existing |
2519 | symbol to a newly created symbol. Also called to copy flags and | |
2520 | other back-end info to a weakdef, in which case the symbol is not | |
2521 | newly created and plt/got refcounts and dynamic indices should not | |
2522 | be copied. */ | |
2523 | ||
2524 | static void | |
2525 | elf_m68k_copy_indirect_symbol (struct bfd_link_info *info, | |
2526 | struct elf_link_hash_entry *_dir, | |
2527 | struct elf_link_hash_entry *_ind) | |
2528 | { | |
2529 | struct elf_m68k_link_hash_entry *dir; | |
2530 | struct elf_m68k_link_hash_entry *ind; | |
2531 | ||
2532 | _bfd_elf_link_hash_copy_indirect (info, _dir, _ind); | |
2533 | ||
2534 | if (_ind->root.type != bfd_link_hash_indirect) | |
2535 | return; | |
2536 | ||
2537 | dir = elf_m68k_hash_entry (_dir); | |
2538 | ind = elf_m68k_hash_entry (_ind); | |
2539 | ||
e5f2b1de NC |
2540 | /* Any absolute non-dynamic relocations against an indirect or weak |
2541 | definition will be against the target symbol. */ | |
2542 | _dir->non_got_ref |= _ind->non_got_ref; | |
2543 | ||
7fb9f789 NC |
2544 | /* We might have a direct symbol already having entries in the GOTs. |
2545 | Update its key only in case indirect symbol has GOT entries and | |
2546 | assert that both indirect and direct symbols don't have GOT entries | |
2547 | at the same time. */ | |
2548 | if (ind->got_entry_key != 0) | |
266abb8f | 2549 | { |
7fb9f789 NC |
2550 | BFD_ASSERT (dir->got_entry_key == 0); |
2551 | /* Assert that GOTs aren't partioned yet. */ | |
2552 | BFD_ASSERT (ind->glist == NULL); | |
425c6cb0 | 2553 | |
7fb9f789 NC |
2554 | dir->got_entry_key = ind->got_entry_key; |
2555 | ind->got_entry_key = 0; | |
266abb8f | 2556 | } |
9e1281c7 | 2557 | } |
7fb9f789 | 2558 | |
252b5132 RH |
2559 | /* Look through the relocs for a section during the first phase, and |
2560 | allocate space in the global offset table or procedure linkage | |
2561 | table. */ | |
2562 | ||
b34976b6 | 2563 | static bfd_boolean |
2c3fc389 NC |
2564 | elf_m68k_check_relocs (bfd *abfd, |
2565 | struct bfd_link_info *info, | |
2566 | asection *sec, | |
2567 | const Elf_Internal_Rela *relocs) | |
252b5132 RH |
2568 | { |
2569 | bfd *dynobj; | |
2570 | Elf_Internal_Shdr *symtab_hdr; | |
2571 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
2572 | const Elf_Internal_Rela *rel; |
2573 | const Elf_Internal_Rela *rel_end; | |
252b5132 | 2574 | asection *sreloc; |
7fb9f789 | 2575 | struct elf_m68k_got *got; |
252b5132 | 2576 | |
0e1862bb | 2577 | if (bfd_link_relocatable (info)) |
b34976b6 | 2578 | return TRUE; |
252b5132 RH |
2579 | |
2580 | dynobj = elf_hash_table (info)->dynobj; | |
2581 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2582 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 | 2583 | |
252b5132 RH |
2584 | sreloc = NULL; |
2585 | ||
7fb9f789 NC |
2586 | got = NULL; |
2587 | ||
252b5132 RH |
2588 | rel_end = relocs + sec->reloc_count; |
2589 | for (rel = relocs; rel < rel_end; rel++) | |
2590 | { | |
2591 | unsigned long r_symndx; | |
2592 | struct elf_link_hash_entry *h; | |
2593 | ||
2594 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2595 | ||
2596 | if (r_symndx < symtab_hdr->sh_info) | |
2597 | h = NULL; | |
2598 | else | |
973a3492 L |
2599 | { |
2600 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2601 | while (h->root.type == bfd_link_hash_indirect | |
2602 | || h->root.type == bfd_link_hash_warning) | |
2603 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2604 | } | |
252b5132 RH |
2605 | |
2606 | switch (ELF32_R_TYPE (rel->r_info)) | |
2607 | { | |
2608 | case R_68K_GOT8: | |
2609 | case R_68K_GOT16: | |
2610 | case R_68K_GOT32: | |
2611 | if (h != NULL | |
2612 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2613 | break; | |
2614 | /* Fall through. */ | |
cf869cce NC |
2615 | |
2616 | /* Relative GOT relocations. */ | |
252b5132 RH |
2617 | case R_68K_GOT8O: |
2618 | case R_68K_GOT16O: | |
2619 | case R_68K_GOT32O: | |
cf869cce NC |
2620 | /* Fall through. */ |
2621 | ||
2622 | /* TLS relocations. */ | |
2623 | case R_68K_TLS_GD8: | |
2624 | case R_68K_TLS_GD16: | |
2625 | case R_68K_TLS_GD32: | |
2626 | case R_68K_TLS_LDM8: | |
2627 | case R_68K_TLS_LDM16: | |
2628 | case R_68K_TLS_LDM32: | |
2629 | case R_68K_TLS_IE8: | |
2630 | case R_68K_TLS_IE16: | |
2631 | case R_68K_TLS_IE32: | |
2632 | ||
e5f2b1de NC |
2633 | case R_68K_TLS_TPREL32: |
2634 | case R_68K_TLS_DTPREL32: | |
2635 | ||
2636 | if (ELF32_R_TYPE (rel->r_info) == R_68K_TLS_TPREL32 | |
0e1862bb | 2637 | && bfd_link_pic (info)) |
e5f2b1de NC |
2638 | /* Do the special chorus for libraries with static TLS. */ |
2639 | info->flags |= DF_STATIC_TLS; | |
2640 | ||
252b5132 RH |
2641 | /* This symbol requires a global offset table entry. */ |
2642 | ||
2643 | if (dynobj == NULL) | |
2644 | { | |
2645 | /* Create the .got section. */ | |
2646 | elf_hash_table (info)->dynobj = dynobj = abfd; | |
2647 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 2648 | return FALSE; |
252b5132 RH |
2649 | } |
2650 | ||
7fb9f789 | 2651 | if (got == NULL) |
252b5132 | 2652 | { |
7fb9f789 | 2653 | struct elf_m68k_bfd2got_entry *bfd2got_entry; |
252b5132 | 2654 | |
7fb9f789 NC |
2655 | bfd2got_entry |
2656 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
2657 | abfd, FIND_OR_CREATE, info); | |
2658 | if (bfd2got_entry == NULL) | |
2659 | return FALSE; | |
252b5132 | 2660 | |
7fb9f789 NC |
2661 | got = bfd2got_entry->got; |
2662 | BFD_ASSERT (got != NULL); | |
252b5132 | 2663 | } |
7fb9f789 NC |
2664 | |
2665 | { | |
2666 | struct elf_m68k_got_entry *got_entry; | |
2667 | ||
2668 | /* Add entry to got. */ | |
2669 | got_entry = elf_m68k_add_entry_to_got (got, h, abfd, | |
2670 | ELF32_R_TYPE (rel->r_info), | |
2671 | r_symndx, info); | |
2672 | if (got_entry == NULL) | |
2673 | return FALSE; | |
2674 | ||
2675 | if (got_entry->u.s1.refcount == 1) | |
2676 | { | |
2677 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2678 | if (h != NULL | |
2679 | && h->dynindx == -1 | |
2680 | && !h->forced_local) | |
2681 | { | |
2682 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
2683 | return FALSE; | |
2684 | } | |
7fb9f789 NC |
2685 | } |
2686 | } | |
2687 | ||
252b5132 RH |
2688 | break; |
2689 | ||
2690 | case R_68K_PLT8: | |
2691 | case R_68K_PLT16: | |
2692 | case R_68K_PLT32: | |
2693 | /* This symbol requires a procedure linkage table entry. We | |
2694 | actually build the entry in adjust_dynamic_symbol, | |
07d6d2b8 AM |
2695 | because this might be a case of linking PIC code which is |
2696 | never referenced by a dynamic object, in which case we | |
2697 | don't need to generate a procedure linkage table entry | |
2698 | after all. */ | |
252b5132 RH |
2699 | |
2700 | /* If this is a local symbol, we resolve it directly without | |
2701 | creating a procedure linkage table entry. */ | |
2702 | if (h == NULL) | |
2703 | continue; | |
2704 | ||
f5385ebf | 2705 | h->needs_plt = 1; |
51b64d56 | 2706 | h->plt.refcount++; |
252b5132 RH |
2707 | break; |
2708 | ||
2709 | case R_68K_PLT8O: | |
2710 | case R_68K_PLT16O: | |
2711 | case R_68K_PLT32O: | |
2712 | /* This symbol requires a procedure linkage table entry. */ | |
2713 | ||
2714 | if (h == NULL) | |
2715 | { | |
2716 | /* It does not make sense to have this relocation for a | |
2717 | local symbol. FIXME: does it? How to handle it if | |
2718 | it does make sense? */ | |
2719 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2720 | return FALSE; |
252b5132 RH |
2721 | } |
2722 | ||
2723 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 2724 | if (h->dynindx == -1 |
f5385ebf | 2725 | && !h->forced_local) |
252b5132 | 2726 | { |
c152c796 | 2727 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2728 | return FALSE; |
252b5132 RH |
2729 | } |
2730 | ||
f5385ebf | 2731 | h->needs_plt = 1; |
51b64d56 | 2732 | h->plt.refcount++; |
252b5132 RH |
2733 | break; |
2734 | ||
2735 | case R_68K_PC8: | |
2736 | case R_68K_PC16: | |
2737 | case R_68K_PC32: | |
2738 | /* If we are creating a shared library and this is not a local | |
2739 | symbol, we need to copy the reloc into the shared library. | |
2740 | However when linking with -Bsymbolic and this is a global | |
2741 | symbol which is defined in an object we are including in the | |
2742 | link (i.e., DEF_REGULAR is set), then we can resolve the | |
2743 | reloc directly. At this point we have not seen all the input | |
2744 | files, so it is possible that DEF_REGULAR is not set now but | |
2745 | will be set later (it is never cleared). We account for that | |
2746 | possibility below by storing information in the | |
2747 | pcrel_relocs_copied field of the hash table entry. */ | |
0e1862bb | 2748 | if (!(bfd_link_pic (info) |
252b5132 RH |
2749 | && (sec->flags & SEC_ALLOC) != 0 |
2750 | && h != NULL | |
a496fbc8 | 2751 | && (!SYMBOLIC_BIND (info, h) |
b6152c34 | 2752 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 2753 | || !h->def_regular))) |
252b5132 RH |
2754 | { |
2755 | if (h != NULL) | |
2756 | { | |
2757 | /* Make sure a plt entry is created for this symbol if | |
2758 | it turns out to be a function defined by a dynamic | |
2759 | object. */ | |
51b64d56 | 2760 | h->plt.refcount++; |
252b5132 RH |
2761 | } |
2762 | break; | |
2763 | } | |
2764 | /* Fall through. */ | |
2765 | case R_68K_8: | |
2766 | case R_68K_16: | |
2767 | case R_68K_32: | |
810e6986 NC |
2768 | /* We don't need to handle relocs into sections not going into |
2769 | the "real" output. */ | |
2770 | if ((sec->flags & SEC_ALLOC) == 0) | |
2771 | break; | |
2772 | ||
252b5132 RH |
2773 | if (h != NULL) |
2774 | { | |
2775 | /* Make sure a plt entry is created for this symbol if it | |
2776 | turns out to be a function defined by a dynamic object. */ | |
51b64d56 | 2777 | h->plt.refcount++; |
e5f2b1de | 2778 | |
0e1862bb | 2779 | if (bfd_link_executable (info)) |
e5f2b1de NC |
2780 | /* This symbol needs a non-GOT reference. */ |
2781 | h->non_got_ref = 1; | |
252b5132 RH |
2782 | } |
2783 | ||
2784 | /* If we are creating a shared library, we need to copy the | |
2785 | reloc into the shared library. */ | |
5056ba1d L |
2786 | if (bfd_link_pic (info) |
2787 | && (h == NULL | |
2788 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) | |
252b5132 RH |
2789 | { |
2790 | /* When creating a shared object, we must copy these | |
2791 | reloc types into the output file. We create a reloc | |
2792 | section in dynobj and make room for this reloc. */ | |
2793 | if (sreloc == NULL) | |
2794 | { | |
83bac4b0 NC |
2795 | sreloc = _bfd_elf_make_dynamic_reloc_section |
2796 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); | |
252b5132 | 2797 | |
252b5132 | 2798 | if (sreloc == NULL) |
83bac4b0 | 2799 | return FALSE; |
252b5132 RH |
2800 | } |
2801 | ||
3e829b4a AS |
2802 | if (sec->flags & SEC_READONLY |
2803 | /* Don't set DF_TEXTREL yet for PC relative | |
2804 | relocations, they might be discarded later. */ | |
2805 | && !(ELF32_R_TYPE (rel->r_info) == R_68K_PC8 | |
2806 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2807 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32)) | |
2808 | info->flags |= DF_TEXTREL; | |
2809 | ||
eea6121a | 2810 | sreloc->size += sizeof (Elf32_External_Rela); |
252b5132 | 2811 | |
b6152c34 AS |
2812 | /* We count the number of PC relative relocations we have |
2813 | entered for this symbol, so that we can discard them | |
2814 | again if, in the -Bsymbolic case, the symbol is later | |
2815 | defined by a regular object, or, in the normal shared | |
2816 | case, the symbol is forced to be local. Note that this | |
2817 | function is only called if we are using an m68kelf linker | |
2818 | hash table, which means that h is really a pointer to an | |
252b5132 | 2819 | elf_m68k_link_hash_entry. */ |
b6152c34 AS |
2820 | if (ELF32_R_TYPE (rel->r_info) == R_68K_PC8 |
2821 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC16 | |
2822 | || ELF32_R_TYPE (rel->r_info) == R_68K_PC32) | |
252b5132 | 2823 | { |
252b5132 | 2824 | struct elf_m68k_pcrel_relocs_copied *p; |
b6152c34 AS |
2825 | struct elf_m68k_pcrel_relocs_copied **head; |
2826 | ||
2827 | if (h != NULL) | |
2828 | { | |
2829 | struct elf_m68k_link_hash_entry *eh | |
0cca5f05 | 2830 | = elf_m68k_hash_entry (h); |
b6152c34 AS |
2831 | head = &eh->pcrel_relocs_copied; |
2832 | } | |
2833 | else | |
2834 | { | |
2835 | asection *s; | |
6edfbbad | 2836 | void *vpp; |
87d72d41 | 2837 | Elf_Internal_Sym *isym; |
6edfbbad | 2838 | |
87d72d41 AM |
2839 | isym = bfd_sym_from_r_symndx (&elf_m68k_hash_table (info)->sym_cache, |
2840 | abfd, r_symndx); | |
2841 | if (isym == NULL) | |
b6152c34 | 2842 | return FALSE; |
252b5132 | 2843 | |
87d72d41 AM |
2844 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
2845 | if (s == NULL) | |
2846 | s = sec; | |
2847 | ||
6edfbbad DJ |
2848 | vpp = &elf_section_data (s)->local_dynrel; |
2849 | head = (struct elf_m68k_pcrel_relocs_copied **) vpp; | |
b6152c34 | 2850 | } |
252b5132 | 2851 | |
b6152c34 | 2852 | for (p = *head; p != NULL; p = p->next) |
252b5132 RH |
2853 | if (p->section == sreloc) |
2854 | break; | |
2855 | ||
2856 | if (p == NULL) | |
2857 | { | |
2858 | p = ((struct elf_m68k_pcrel_relocs_copied *) | |
dc810e39 | 2859 | bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); |
252b5132 | 2860 | if (p == NULL) |
b34976b6 | 2861 | return FALSE; |
b6152c34 AS |
2862 | p->next = *head; |
2863 | *head = p; | |
252b5132 RH |
2864 | p->section = sreloc; |
2865 | p->count = 0; | |
2866 | } | |
2867 | ||
2868 | ++p->count; | |
2869 | } | |
2870 | } | |
2871 | ||
2872 | break; | |
2873 | ||
2874 | /* This relocation describes the C++ object vtable hierarchy. | |
2875 | Reconstruct it for later use during GC. */ | |
2876 | case R_68K_GNU_VTINHERIT: | |
c152c796 | 2877 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 2878 | return FALSE; |
252b5132 RH |
2879 | break; |
2880 | ||
2881 | /* This relocation describes which C++ vtable entries are actually | |
2882 | used. Record for later use during GC. */ | |
2883 | case R_68K_GNU_VTENTRY: | |
a0ea3a14 | 2884 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 2885 | return FALSE; |
252b5132 RH |
2886 | break; |
2887 | ||
2888 | default: | |
2889 | break; | |
2890 | } | |
2891 | } | |
2892 | ||
b34976b6 | 2893 | return TRUE; |
252b5132 RH |
2894 | } |
2895 | ||
2896 | /* Return the section that should be marked against GC for a given | |
2897 | relocation. */ | |
2898 | ||
2899 | static asection * | |
07adf181 AM |
2900 | elf_m68k_gc_mark_hook (asection *sec, |
2901 | struct bfd_link_info *info, | |
2902 | Elf_Internal_Rela *rel, | |
2903 | struct elf_link_hash_entry *h, | |
2904 | Elf_Internal_Sym *sym) | |
252b5132 RH |
2905 | { |
2906 | if (h != NULL) | |
07adf181 AM |
2907 | switch (ELF32_R_TYPE (rel->r_info)) |
2908 | { | |
2909 | case R_68K_GNU_VTINHERIT: | |
2910 | case R_68K_GNU_VTENTRY: | |
2911 | return NULL; | |
2912 | } | |
2913 | ||
2914 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 | 2915 | } |
cc3e26be RS |
2916 | \f |
2917 | /* Return the type of PLT associated with OUTPUT_BFD. */ | |
2918 | ||
2919 | static const struct elf_m68k_plt_info * | |
2920 | elf_m68k_get_plt_info (bfd *output_bfd) | |
2921 | { | |
2922 | unsigned int features; | |
2923 | ||
2924 | features = bfd_m68k_mach_to_features (bfd_get_mach (output_bfd)); | |
2925 | if (features & cpu32) | |
2926 | return &elf_cpu32_plt_info; | |
2927 | if (features & mcfisa_b) | |
2928 | return &elf_isab_plt_info; | |
9a2e615a NS |
2929 | if (features & mcfisa_c) |
2930 | return &elf_isac_plt_info; | |
cc3e26be RS |
2931 | return &elf_m68k_plt_info; |
2932 | } | |
2933 | ||
2934 | /* This function is called after all the input files have been read, | |
2935 | and the input sections have been assigned to output sections. | |
2936 | It's a convenient place to determine the PLT style. */ | |
2937 | ||
2938 | static bfd_boolean | |
2939 | elf_m68k_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) | |
2940 | { | |
7fb9f789 NC |
2941 | /* Bind input BFDs to GOTs and calculate sizes of .got and .rela.got |
2942 | sections. */ | |
2943 | if (!elf_m68k_partition_multi_got (info)) | |
2944 | return FALSE; | |
2945 | ||
cc3e26be RS |
2946 | elf_m68k_hash_table (info)->plt_info = elf_m68k_get_plt_info (output_bfd); |
2947 | return TRUE; | |
2948 | } | |
252b5132 | 2949 | |
252b5132 RH |
2950 | /* Adjust a symbol defined by a dynamic object and referenced by a |
2951 | regular object. The current definition is in some section of the | |
2952 | dynamic object, but we're not including those sections. We have to | |
2953 | change the definition to something the rest of the link can | |
2954 | understand. */ | |
2955 | ||
b34976b6 | 2956 | static bfd_boolean |
2c3fc389 NC |
2957 | elf_m68k_adjust_dynamic_symbol (struct bfd_link_info *info, |
2958 | struct elf_link_hash_entry *h) | |
252b5132 | 2959 | { |
cc3e26be | 2960 | struct elf_m68k_link_hash_table *htab; |
252b5132 RH |
2961 | bfd *dynobj; |
2962 | asection *s; | |
252b5132 | 2963 | |
cc3e26be | 2964 | htab = elf_m68k_hash_table (info); |
ce558b89 | 2965 | dynobj = htab->root.dynobj; |
252b5132 RH |
2966 | |
2967 | /* Make sure we know what is going on here. */ | |
2968 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 2969 | && (h->needs_plt |
60d67dc8 | 2970 | || h->is_weakalias |
f5385ebf AM |
2971 | || (h->def_dynamic |
2972 | && h->ref_regular | |
2973 | && !h->def_regular))); | |
252b5132 RH |
2974 | |
2975 | /* If this is a function, put it in the procedure linkage table. We | |
2976 | will fill in the contents of the procedure linkage table later, | |
2977 | when we know the address of the .got section. */ | |
2978 | if (h->type == STT_FUNC | |
f5385ebf | 2979 | || h->needs_plt) |
252b5132 | 2980 | { |
9dfe8738 | 2981 | if ((h->plt.refcount <= 0 |
07d6d2b8 | 2982 | || SYMBOL_CALLS_LOCAL (info, h) |
5056ba1d L |
2983 | || ((ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
2984 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
9dfe8738 | 2985 | && h->root.type == bfd_link_hash_undefweak)) |
252b5132 RH |
2986 | /* We must always create the plt entry if it was referenced |
2987 | by a PLTxxO relocation. In this case we already recorded | |
2988 | it as a dynamic symbol. */ | |
2989 | && h->dynindx == -1) | |
2990 | { | |
2991 | /* This case can occur if we saw a PLTxx reloc in an input | |
2992 | file, but the symbol was never referred to by a dynamic | |
9dfe8738 AS |
2993 | object, or if all references were garbage collected. In |
2994 | such a case, we don't actually need to build a procedure | |
2995 | linkage table, and we can just do a PCxx reloc instead. */ | |
252b5132 | 2996 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2997 | h->needs_plt = 0; |
b34976b6 | 2998 | return TRUE; |
252b5132 RH |
2999 | } |
3000 | ||
3001 | /* Make sure this symbol is output as a dynamic symbol. */ | |
b6152c34 | 3002 | if (h->dynindx == -1 |
f5385ebf | 3003 | && !h->forced_local) |
252b5132 | 3004 | { |
c152c796 | 3005 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 3006 | return FALSE; |
252b5132 RH |
3007 | } |
3008 | ||
ce558b89 | 3009 | s = htab->root.splt; |
252b5132 RH |
3010 | BFD_ASSERT (s != NULL); |
3011 | ||
3012 | /* If this is the first .plt entry, make room for the special | |
3013 | first entry. */ | |
eea6121a | 3014 | if (s->size == 0) |
cc3e26be | 3015 | s->size = htab->plt_info->size; |
252b5132 RH |
3016 | |
3017 | /* If this symbol is not defined in a regular file, and we are | |
3018 | not generating a shared library, then set the symbol to this | |
3019 | location in the .plt. This is required to make function | |
3020 | pointers compare as equal between the normal executable and | |
3021 | the shared library. */ | |
0e1862bb | 3022 | if (!bfd_link_pic (info) |
f5385ebf | 3023 | && !h->def_regular) |
252b5132 RH |
3024 | { |
3025 | h->root.u.def.section = s; | |
eea6121a | 3026 | h->root.u.def.value = s->size; |
252b5132 RH |
3027 | } |
3028 | ||
eea6121a | 3029 | h->plt.offset = s->size; |
252b5132 RH |
3030 | |
3031 | /* Make room for this entry. */ | |
cc3e26be | 3032 | s->size += htab->plt_info->size; |
252b5132 RH |
3033 | |
3034 | /* We also need to make an entry in the .got.plt section, which | |
3035 | will be placed in the .got section by the linker script. */ | |
ce558b89 | 3036 | s = htab->root.sgotplt; |
252b5132 | 3037 | BFD_ASSERT (s != NULL); |
eea6121a | 3038 | s->size += 4; |
252b5132 RH |
3039 | |
3040 | /* We also need to make an entry in the .rela.plt section. */ | |
ce558b89 | 3041 | s = htab->root.srelplt; |
252b5132 | 3042 | BFD_ASSERT (s != NULL); |
eea6121a | 3043 | s->size += sizeof (Elf32_External_Rela); |
252b5132 | 3044 | |
b34976b6 | 3045 | return TRUE; |
252b5132 RH |
3046 | } |
3047 | ||
3048 | /* Reinitialize the plt offset now that it is not used as a reference | |
3049 | count any more. */ | |
3050 | h->plt.offset = (bfd_vma) -1; | |
3051 | ||
3052 | /* If this is a weak symbol, and there is a real definition, the | |
3053 | processor independent code will have arranged for us to see the | |
3054 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 3055 | if (h->is_weakalias) |
252b5132 | 3056 | { |
60d67dc8 AM |
3057 | struct elf_link_hash_entry *def = weakdef (h); |
3058 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
3059 | h->root.u.def.section = def->root.u.def.section; | |
3060 | h->root.u.def.value = def->root.u.def.value; | |
b34976b6 | 3061 | return TRUE; |
252b5132 RH |
3062 | } |
3063 | ||
3064 | /* This is a reference to a symbol defined by a dynamic object which | |
3065 | is not a function. */ | |
3066 | ||
3067 | /* If we are creating a shared library, we must presume that the | |
3068 | only references to the symbol are via the global offset table. | |
3069 | For such cases we need not do anything here; the relocations will | |
3070 | be handled correctly by relocate_section. */ | |
0e1862bb | 3071 | if (bfd_link_pic (info)) |
b34976b6 | 3072 | return TRUE; |
252b5132 | 3073 | |
e5f2b1de NC |
3074 | /* If there are no references to this symbol that do not use the |
3075 | GOT, we don't need to generate a copy reloc. */ | |
3076 | if (!h->non_got_ref) | |
3077 | return TRUE; | |
3078 | ||
252b5132 RH |
3079 | /* We must allocate the symbol in our .dynbss section, which will |
3080 | become part of the .bss section of the executable. There will be | |
3081 | an entry for this symbol in the .dynsym section. The dynamic | |
3082 | object will contain position independent code, so all references | |
3083 | from the dynamic object to this symbol will go through the global | |
3084 | offset table. The dynamic linker will use the .dynsym entry to | |
3085 | determine the address it must put in the global offset table, so | |
3086 | both the dynamic object and the regular object will refer to the | |
3087 | same memory location for the variable. */ | |
3088 | ||
3d4d4302 | 3089 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
252b5132 RH |
3090 | BFD_ASSERT (s != NULL); |
3091 | ||
3092 | /* We must generate a R_68K_COPY reloc to tell the dynamic linker to | |
3093 | copy the initial value out of the dynamic object and into the | |
3094 | runtime process image. We need to remember the offset into the | |
3095 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 3096 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
252b5132 RH |
3097 | { |
3098 | asection *srel; | |
3099 | ||
3d4d4302 | 3100 | srel = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 | 3101 | BFD_ASSERT (srel != NULL); |
eea6121a | 3102 | srel->size += sizeof (Elf32_External_Rela); |
f5385ebf | 3103 | h->needs_copy = 1; |
252b5132 RH |
3104 | } |
3105 | ||
6cabe1ea | 3106 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
252b5132 RH |
3107 | } |
3108 | ||
3109 | /* Set the sizes of the dynamic sections. */ | |
3110 | ||
b34976b6 | 3111 | static bfd_boolean |
2c3fc389 NC |
3112 | elf_m68k_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
3113 | struct bfd_link_info *info) | |
252b5132 RH |
3114 | { |
3115 | bfd *dynobj; | |
3116 | asection *s; | |
b34976b6 | 3117 | bfd_boolean relocs; |
252b5132 RH |
3118 | |
3119 | dynobj = elf_hash_table (info)->dynobj; | |
3120 | BFD_ASSERT (dynobj != NULL); | |
3121 | ||
3122 | if (elf_hash_table (info)->dynamic_sections_created) | |
3123 | { | |
3124 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 3125 | if (bfd_link_executable (info) && !info->nointerp) |
252b5132 | 3126 | { |
3d4d4302 | 3127 | s = bfd_get_linker_section (dynobj, ".interp"); |
252b5132 | 3128 | BFD_ASSERT (s != NULL); |
eea6121a | 3129 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
3130 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
3131 | } | |
3132 | } | |
3133 | else | |
3134 | { | |
3135 | /* We may have created entries in the .rela.got section. | |
3136 | However, if we are not creating the dynamic sections, we will | |
3137 | not actually use these entries. Reset the size of .rela.got, | |
3138 | which will cause it to get stripped from the output file | |
3139 | below. */ | |
ce558b89 | 3140 | s = elf_hash_table (info)->srelgot; |
252b5132 | 3141 | if (s != NULL) |
eea6121a | 3142 | s->size = 0; |
252b5132 RH |
3143 | } |
3144 | ||
b6152c34 AS |
3145 | /* If this is a -Bsymbolic shared link, then we need to discard all |
3146 | PC relative relocs against symbols defined in a regular object. | |
3147 | For the normal shared case we discard the PC relative relocs | |
3148 | against symbols that have become local due to visibility changes. | |
3149 | We allocated space for them in the check_relocs routine, but we | |
3150 | will not fill them in in the relocate_section routine. */ | |
0e1862bb | 3151 | if (bfd_link_pic (info)) |
0cca5f05 AS |
3152 | elf_link_hash_traverse (elf_hash_table (info), |
3153 | elf_m68k_discard_copies, | |
2c3fc389 | 3154 | info); |
252b5132 RH |
3155 | |
3156 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
3157 | determined the sizes of the various dynamic sections. Allocate | |
3158 | memory for them. */ | |
b34976b6 | 3159 | relocs = FALSE; |
252b5132 RH |
3160 | for (s = dynobj->sections; s != NULL; s = s->next) |
3161 | { | |
3162 | const char *name; | |
252b5132 RH |
3163 | |
3164 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3165 | continue; | |
3166 | ||
3167 | /* It's OK to base decisions on the section name, because none | |
3168 | of the dynobj section names depend upon the input files. */ | |
fd361982 | 3169 | name = bfd_section_name (s); |
252b5132 | 3170 | |
252b5132 RH |
3171 | if (strcmp (name, ".plt") == 0) |
3172 | { | |
c456f082 | 3173 | /* Remember whether there is a PLT. */ |
3084d7a2 | 3174 | ; |
252b5132 | 3175 | } |
0112cd26 | 3176 | else if (CONST_STRNEQ (name, ".rela")) |
252b5132 | 3177 | { |
c456f082 | 3178 | if (s->size != 0) |
252b5132 | 3179 | { |
b34976b6 | 3180 | relocs = TRUE; |
252b5132 RH |
3181 | |
3182 | /* We use the reloc_count field as a counter if we need | |
3183 | to copy relocs into the output file. */ | |
3184 | s->reloc_count = 0; | |
3185 | } | |
3186 | } | |
0112cd26 | 3187 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 3188 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
3189 | { |
3190 | /* It's not one of our sections, so don't allocate space. */ | |
3191 | continue; | |
3192 | } | |
3193 | ||
c456f082 | 3194 | if (s->size == 0) |
252b5132 | 3195 | { |
c456f082 AM |
3196 | /* If we don't need this section, strip it from the |
3197 | output file. This is mostly to handle .rela.bss and | |
3198 | .rela.plt. We must create both sections in | |
3199 | create_dynamic_sections, because they must be created | |
3200 | before the linker maps input sections to output | |
3201 | sections. The linker does that before | |
3202 | adjust_dynamic_symbol is called, and it is that | |
3203 | function which decides whether anything needs to go | |
3204 | into these sections. */ | |
8423293d | 3205 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
3206 | continue; |
3207 | } | |
3208 | ||
c456f082 AM |
3209 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
3210 | continue; | |
3211 | ||
252b5132 | 3212 | /* Allocate memory for the section contents. */ |
7a9af8c4 NC |
3213 | /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. |
3214 | Unused entries should be reclaimed before the section's contents | |
3215 | are written out, but at the moment this does not happen. Thus in | |
3216 | order to prevent writing out garbage, we initialise the section's | |
3217 | contents to zero. */ | |
eea6121a | 3218 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 3219 | if (s->contents == NULL) |
b34976b6 | 3220 | return FALSE; |
252b5132 RH |
3221 | } |
3222 | ||
3084d7a2 | 3223 | return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs); |
252b5132 RH |
3224 | } |
3225 | ||
0cca5f05 | 3226 | /* This function is called via elf_link_hash_traverse if we are |
b6152c34 AS |
3227 | creating a shared object. In the -Bsymbolic case it discards the |
3228 | space allocated to copy PC relative relocs against symbols which | |
3e829b4a | 3229 | are defined in regular objects. For the normal shared case, it |
b6152c34 AS |
3230 | discards space for pc-relative relocs that have become local due to |
3231 | symbol visibility changes. We allocated space for them in the | |
3232 | check_relocs routine, but we won't fill them in in the | |
3e829b4a AS |
3233 | relocate_section routine. |
3234 | ||
3235 | We also check whether any of the remaining relocations apply | |
3236 | against a readonly section, and set the DF_TEXTREL flag in this | |
3237 | case. */ | |
252b5132 | 3238 | |
b34976b6 | 3239 | static bfd_boolean |
2c3fc389 NC |
3240 | elf_m68k_discard_copies (struct elf_link_hash_entry *h, |
3241 | void * inf) | |
252b5132 | 3242 | { |
b6152c34 | 3243 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
252b5132 RH |
3244 | struct elf_m68k_pcrel_relocs_copied *s; |
3245 | ||
2516a1ee | 3246 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
3e829b4a AS |
3247 | { |
3248 | if ((info->flags & DF_TEXTREL) == 0) | |
3249 | { | |
3250 | /* Look for relocations against read-only sections. */ | |
0cca5f05 AS |
3251 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3252 | s != NULL; | |
3253 | s = s->next) | |
3e829b4a AS |
3254 | if ((s->section->flags & SEC_READONLY) != 0) |
3255 | { | |
3256 | info->flags |= DF_TEXTREL; | |
3257 | break; | |
3258 | } | |
3259 | } | |
0cca5f05 | 3260 | |
cab0ad83 AS |
3261 | /* Make sure undefined weak symbols are output as a dynamic symbol |
3262 | in PIEs. */ | |
3263 | if (h->non_got_ref | |
3264 | && h->root.type == bfd_link_hash_undefweak | |
3265 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3266 | && h->dynindx == -1 | |
3267 | && !h->forced_local) | |
3268 | { | |
3269 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
3270 | return FALSE; | |
3271 | } | |
3272 | ||
3e829b4a AS |
3273 | return TRUE; |
3274 | } | |
252b5132 | 3275 | |
0cca5f05 AS |
3276 | for (s = elf_m68k_hash_entry (h)->pcrel_relocs_copied; |
3277 | s != NULL; | |
3278 | s = s->next) | |
eea6121a | 3279 | s->section->size -= s->count * sizeof (Elf32_External_Rela); |
252b5132 | 3280 | |
b34976b6 | 3281 | return TRUE; |
252b5132 RH |
3282 | } |
3283 | ||
cf869cce NC |
3284 | |
3285 | /* Install relocation RELA. */ | |
3286 | ||
3287 | static void | |
3288 | elf_m68k_install_rela (bfd *output_bfd, | |
3289 | asection *srela, | |
3290 | Elf_Internal_Rela *rela) | |
3291 | { | |
3292 | bfd_byte *loc; | |
3293 | ||
3294 | loc = srela->contents; | |
3295 | loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); | |
3296 | bfd_elf32_swap_reloca_out (output_bfd, rela, loc); | |
3297 | } | |
3298 | ||
325e58c7 NC |
3299 | /* Find the base offsets for thread-local storage in this object, |
3300 | for GD/LD and IE/LE respectively. */ | |
3301 | ||
3302 | #define DTP_OFFSET 0x8000 | |
3303 | #define TP_OFFSET 0x7000 | |
cf869cce NC |
3304 | |
3305 | static bfd_vma | |
3306 | dtpoff_base (struct bfd_link_info *info) | |
3307 | { | |
3308 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
3309 | if (elf_hash_table (info)->tls_sec == NULL) | |
3310 | return 0; | |
325e58c7 | 3311 | return elf_hash_table (info)->tls_sec->vma + DTP_OFFSET; |
cf869cce NC |
3312 | } |
3313 | ||
cf869cce | 3314 | static bfd_vma |
325e58c7 | 3315 | tpoff_base (struct bfd_link_info *info) |
cf869cce | 3316 | { |
cf869cce | 3317 | /* If tls_sec is NULL, we should have signalled an error already. */ |
325e58c7 | 3318 | if (elf_hash_table (info)->tls_sec == NULL) |
cf869cce | 3319 | return 0; |
325e58c7 NC |
3320 | return elf_hash_table (info)->tls_sec->vma + TP_OFFSET; |
3321 | } | |
3322 | ||
3323 | /* Output necessary relocation to handle a symbol during static link. | |
3324 | This function is called from elf_m68k_relocate_section. */ | |
3325 | ||
3326 | static void | |
3327 | elf_m68k_init_got_entry_static (struct bfd_link_info *info, | |
3328 | bfd *output_bfd, | |
3329 | enum elf_m68k_reloc_type r_type, | |
3330 | asection *sgot, | |
3331 | bfd_vma got_entry_offset, | |
3332 | bfd_vma relocation) | |
3333 | { | |
3334 | switch (elf_m68k_reloc_got_type (r_type)) | |
3335 | { | |
3336 | case R_68K_GOT32O: | |
3337 | bfd_put_32 (output_bfd, relocation, sgot->contents + got_entry_offset); | |
3338 | break; | |
3339 | ||
3340 | case R_68K_TLS_GD32: | |
3341 | /* We know the offset within the module, | |
3342 | put it into the second GOT slot. */ | |
3343 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3344 | sgot->contents + got_entry_offset + 4); | |
3345 | /* FALLTHRU */ | |
3346 | ||
3347 | case R_68K_TLS_LDM32: | |
3348 | /* Mark it as belonging to module 1, the executable. */ | |
3349 | bfd_put_32 (output_bfd, 1, sgot->contents + got_entry_offset); | |
3350 | break; | |
3351 | ||
3352 | case R_68K_TLS_IE32: | |
3353 | bfd_put_32 (output_bfd, relocation - tpoff_base (info), | |
3354 | sgot->contents + got_entry_offset); | |
3355 | break; | |
3356 | ||
3357 | default: | |
3358 | BFD_ASSERT (FALSE); | |
3359 | } | |
3360 | } | |
3361 | ||
3362 | /* Output necessary relocation to handle a local symbol | |
3363 | during dynamic link. | |
3364 | This function is called either from elf_m68k_relocate_section | |
3365 | or from elf_m68k_finish_dynamic_symbol. */ | |
3366 | ||
3367 | static void | |
3368 | elf_m68k_init_got_entry_local_shared (struct bfd_link_info *info, | |
3369 | bfd *output_bfd, | |
3370 | enum elf_m68k_reloc_type r_type, | |
3371 | asection *sgot, | |
3372 | bfd_vma got_entry_offset, | |
3373 | bfd_vma relocation, | |
3374 | asection *srela) | |
3375 | { | |
3376 | Elf_Internal_Rela outrel; | |
3377 | ||
3378 | switch (elf_m68k_reloc_got_type (r_type)) | |
3379 | { | |
3380 | case R_68K_GOT32O: | |
3381 | /* Emit RELATIVE relocation to initialize GOT slot | |
3382 | at run-time. */ | |
3383 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); | |
3384 | outrel.r_addend = relocation; | |
3385 | break; | |
3386 | ||
3387 | case R_68K_TLS_GD32: | |
3388 | /* We know the offset within the module, | |
3389 | put it into the second GOT slot. */ | |
3390 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3391 | sgot->contents + got_entry_offset + 4); | |
3392 | /* FALLTHRU */ | |
3393 | ||
3394 | case R_68K_TLS_LDM32: | |
3395 | /* We don't know the module number, | |
3396 | create a relocation for it. */ | |
3397 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_DTPMOD32); | |
3398 | outrel.r_addend = 0; | |
3399 | break; | |
3400 | ||
3401 | case R_68K_TLS_IE32: | |
3402 | /* Emit TPREL relocation to initialize GOT slot | |
3403 | at run-time. */ | |
3404 | outrel.r_info = ELF32_R_INFO (0, R_68K_TLS_TPREL32); | |
3405 | outrel.r_addend = relocation - elf_hash_table (info)->tls_sec->vma; | |
3406 | break; | |
3407 | ||
3408 | default: | |
3409 | BFD_ASSERT (FALSE); | |
3410 | } | |
3411 | ||
3412 | /* Offset of the GOT entry. */ | |
3413 | outrel.r_offset = (sgot->output_section->vma | |
3414 | + sgot->output_offset | |
3415 | + got_entry_offset); | |
3416 | ||
3417 | /* Install one of the above relocations. */ | |
3418 | elf_m68k_install_rela (output_bfd, srela, &outrel); | |
3419 | ||
3420 | bfd_put_32 (output_bfd, outrel.r_addend, sgot->contents + got_entry_offset); | |
cf869cce NC |
3421 | } |
3422 | ||
252b5132 RH |
3423 | /* Relocate an M68K ELF section. */ |
3424 | ||
b34976b6 | 3425 | static bfd_boolean |
2c3fc389 NC |
3426 | elf_m68k_relocate_section (bfd *output_bfd, |
3427 | struct bfd_link_info *info, | |
3428 | bfd *input_bfd, | |
3429 | asection *input_section, | |
3430 | bfd_byte *contents, | |
3431 | Elf_Internal_Rela *relocs, | |
3432 | Elf_Internal_Sym *local_syms, | |
3433 | asection **local_sections) | |
252b5132 | 3434 | { |
252b5132 RH |
3435 | Elf_Internal_Shdr *symtab_hdr; |
3436 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
3437 | asection *sgot; |
3438 | asection *splt; | |
3439 | asection *sreloc; | |
325e58c7 | 3440 | asection *srela; |
7fb9f789 | 3441 | struct elf_m68k_got *got; |
252b5132 RH |
3442 | Elf_Internal_Rela *rel; |
3443 | Elf_Internal_Rela *relend; | |
3444 | ||
252b5132 RH |
3445 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
3446 | sym_hashes = elf_sym_hashes (input_bfd); | |
252b5132 RH |
3447 | |
3448 | sgot = NULL; | |
3449 | splt = NULL; | |
3450 | sreloc = NULL; | |
325e58c7 | 3451 | srela = NULL; |
252b5132 | 3452 | |
7fb9f789 NC |
3453 | got = NULL; |
3454 | ||
252b5132 RH |
3455 | rel = relocs; |
3456 | relend = relocs + input_section->reloc_count; | |
3457 | for (; rel < relend; rel++) | |
3458 | { | |
3459 | int r_type; | |
3460 | reloc_howto_type *howto; | |
3461 | unsigned long r_symndx; | |
3462 | struct elf_link_hash_entry *h; | |
3463 | Elf_Internal_Sym *sym; | |
3464 | asection *sec; | |
3465 | bfd_vma relocation; | |
44f745a6 | 3466 | bfd_boolean unresolved_reloc; |
252b5132 | 3467 | bfd_reloc_status_type r; |
5056ba1d | 3468 | bfd_boolean resolved_to_zero; |
252b5132 RH |
3469 | |
3470 | r_type = ELF32_R_TYPE (rel->r_info); | |
3471 | if (r_type < 0 || r_type >= (int) R_68K_max) | |
3472 | { | |
3473 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3474 | return FALSE; |
252b5132 RH |
3475 | } |
3476 | howto = howto_table + r_type; | |
3477 | ||
3478 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3479 | ||
252b5132 RH |
3480 | h = NULL; |
3481 | sym = NULL; | |
3482 | sec = NULL; | |
44f745a6 | 3483 | unresolved_reloc = FALSE; |
560e09e9 | 3484 | |
252b5132 RH |
3485 | if (r_symndx < symtab_hdr->sh_info) |
3486 | { | |
3487 | sym = local_syms + r_symndx; | |
3488 | sec = local_sections[r_symndx]; | |
8517fae7 | 3489 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
252b5132 RH |
3490 | } |
3491 | else | |
3492 | { | |
62d887d4 | 3493 | bfd_boolean warned, ignored; |
560e09e9 | 3494 | |
b2a8e766 AM |
3495 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3496 | r_symndx, symtab_hdr, sym_hashes, | |
3497 | h, sec, relocation, | |
62d887d4 | 3498 | unresolved_reloc, warned, ignored); |
252b5132 RH |
3499 | } |
3500 | ||
dbaa2011 | 3501 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 3502 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3503 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 3504 | |
0e1862bb | 3505 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
3506 | continue; |
3507 | ||
5056ba1d L |
3508 | resolved_to_zero = (h != NULL |
3509 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
3510 | ||
252b5132 RH |
3511 | switch (r_type) |
3512 | { | |
3513 | case R_68K_GOT8: | |
3514 | case R_68K_GOT16: | |
3515 | case R_68K_GOT32: | |
3516 | /* Relocation is to the address of the entry for this symbol | |
3517 | in the global offset table. */ | |
3518 | if (h != NULL | |
3519 | && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
7fb9f789 | 3520 | { |
7fb9f789 NC |
3521 | if (elf_m68k_hash_table (info)->local_gp_p) |
3522 | { | |
3523 | bfd_vma sgot_output_offset; | |
3524 | bfd_vma got_offset; | |
3525 | ||
ce558b89 | 3526 | sgot = elf_hash_table (info)->sgot; |
7fb9f789 | 3527 | |
ce558b89 | 3528 | if (sgot != NULL) |
7fb9f789 | 3529 | sgot_output_offset = sgot->output_offset; |
ce558b89 AM |
3530 | else |
3531 | /* In this case we have a reference to | |
3532 | _GLOBAL_OFFSET_TABLE_, but the GOT itself is | |
3533 | empty. | |
3534 | ??? Issue a warning? */ | |
3535 | sgot_output_offset = 0; | |
7fb9f789 NC |
3536 | |
3537 | if (got == NULL) | |
3538 | { | |
3539 | struct elf_m68k_bfd2got_entry *bfd2got_entry; | |
3540 | ||
3541 | bfd2got_entry | |
3542 | = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), | |
3543 | input_bfd, SEARCH, NULL); | |
3544 | ||
3545 | if (bfd2got_entry != NULL) | |
3546 | { | |
3547 | got = bfd2got_entry->got; | |
3548 | BFD_ASSERT (got != NULL); | |
3549 | ||
3550 | got_offset = got->offset; | |
3551 | } | |
3552 | else | |
3553 | /* In this case we have a reference to | |
3554 | _GLOBAL_OFFSET_TABLE_, but no other references | |
3555 | accessing any GOT entries. | |
3556 | ??? Issue a warning? */ | |
3557 | got_offset = 0; | |
3558 | } | |
3559 | else | |
3560 | got_offset = got->offset; | |
3561 | ||
3562 | /* Adjust GOT pointer to point to the GOT | |
3563 | assigned to input_bfd. */ | |
f57718b4 | 3564 | rel->r_addend += sgot_output_offset + got_offset; |
7fb9f789 NC |
3565 | } |
3566 | else | |
3567 | BFD_ASSERT (got == NULL || got->offset == 0); | |
3568 | ||
3569 | break; | |
3570 | } | |
252b5132 RH |
3571 | /* Fall through. */ |
3572 | case R_68K_GOT8O: | |
3573 | case R_68K_GOT16O: | |
3574 | case R_68K_GOT32O: | |
cf869cce NC |
3575 | |
3576 | case R_68K_TLS_LDM32: | |
3577 | case R_68K_TLS_LDM16: | |
3578 | case R_68K_TLS_LDM8: | |
3579 | ||
3580 | case R_68K_TLS_GD8: | |
3581 | case R_68K_TLS_GD16: | |
3582 | case R_68K_TLS_GD32: | |
3583 | ||
3584 | case R_68K_TLS_IE8: | |
3585 | case R_68K_TLS_IE16: | |
3586 | case R_68K_TLS_IE32: | |
3587 | ||
252b5132 RH |
3588 | /* Relocation is the offset of the entry for this symbol in |
3589 | the global offset table. */ | |
3590 | ||
3591 | { | |
7fb9f789 NC |
3592 | struct elf_m68k_got_entry_key key_; |
3593 | bfd_vma *off_ptr; | |
252b5132 RH |
3594 | bfd_vma off; |
3595 | ||
ce558b89 AM |
3596 | sgot = elf_hash_table (info)->sgot; |
3597 | BFD_ASSERT (sgot != NULL); | |
252b5132 | 3598 | |
7fb9f789 | 3599 | if (got == NULL) |
c83004d5 AM |
3600 | got = elf_m68k_get_bfd2got_entry (elf_m68k_multi_got (info), |
3601 | input_bfd, MUST_FIND, | |
3602 | NULL)->got; | |
7fb9f789 NC |
3603 | |
3604 | /* Get GOT offset for this symbol. */ | |
cf869cce NC |
3605 | elf_m68k_init_got_entry_key (&key_, h, input_bfd, r_symndx, |
3606 | r_type); | |
7fb9f789 NC |
3607 | off_ptr = &elf_m68k_get_got_entry (got, &key_, MUST_FIND, |
3608 | NULL)->u.s2.offset; | |
3609 | off = *off_ptr; | |
3610 | ||
cf869cce NC |
3611 | /* The offset must always be a multiple of 4. We use |
3612 | the least significant bit to record whether we have | |
3613 | already generated the necessary reloc. */ | |
3614 | if ((off & 1) != 0) | |
3615 | off &= ~1; | |
3616 | else | |
252b5132 | 3617 | { |
cf869cce NC |
3618 | if (h != NULL |
3619 | /* @TLSLDM relocations are bounded to the module, in | |
3620 | which the symbol is defined -- not to the symbol | |
3621 | itself. */ | |
3622 | && elf_m68k_reloc_got_type (r_type) != R_68K_TLS_LDM32) | |
252b5132 | 3623 | { |
cf869cce NC |
3624 | bfd_boolean dyn; |
3625 | ||
3626 | dyn = elf_hash_table (info)->dynamic_sections_created; | |
0e1862bb L |
3627 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
3628 | bfd_link_pic (info), | |
3629 | h) | |
3630 | || (bfd_link_pic (info) | |
cf869cce | 3631 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
5056ba1d L |
3632 | || ((ELF_ST_VISIBILITY (h->other) |
3633 | || resolved_to_zero) | |
cf869cce | 3634 | && h->root.type == bfd_link_hash_undefweak)) |
252b5132 | 3635 | { |
cf869cce NC |
3636 | /* This is actually a static link, or it is a |
3637 | -Bsymbolic link and the symbol is defined | |
3638 | locally, or the symbol was forced to be local | |
325e58c7 | 3639 | because of a version file. We must initialize |
cf869cce NC |
3640 | this entry in the global offset table. Since |
3641 | the offset must always be a multiple of 4, we | |
3642 | use the least significant bit to record whether | |
3643 | we have initialized it already. | |
3644 | ||
3645 | When doing a dynamic link, we create a .rela.got | |
3646 | relocation entry to initialize the value. This | |
3647 | is done in the finish_dynamic_symbol routine. */ | |
3648 | ||
325e58c7 NC |
3649 | elf_m68k_init_got_entry_static (info, |
3650 | output_bfd, | |
3651 | r_type, | |
3652 | sgot, | |
3653 | off, | |
3654 | relocation); | |
cf869cce | 3655 | |
7fb9f789 | 3656 | *off_ptr |= 1; |
252b5132 | 3657 | } |
cf869cce NC |
3658 | else |
3659 | unresolved_reloc = FALSE; | |
252b5132 | 3660 | } |
0e1862bb | 3661 | else if (bfd_link_pic (info)) /* && h == NULL */ |
325e58c7 | 3662 | /* Process local symbol during dynamic link. */ |
252b5132 | 3663 | { |
ce558b89 AM |
3664 | srela = elf_hash_table (info)->srelgot; |
3665 | BFD_ASSERT (srela != NULL); | |
cf869cce | 3666 | |
325e58c7 NC |
3667 | elf_m68k_init_got_entry_local_shared (info, |
3668 | output_bfd, | |
3669 | r_type, | |
3670 | sgot, | |
3671 | off, | |
3672 | relocation, | |
3673 | srela); | |
cf869cce NC |
3674 | |
3675 | *off_ptr |= 1; | |
3676 | } | |
0e1862bb | 3677 | else /* h == NULL && !bfd_link_pic (info) */ |
cf869cce | 3678 | { |
325e58c7 NC |
3679 | elf_m68k_init_got_entry_static (info, |
3680 | output_bfd, | |
3681 | r_type, | |
3682 | sgot, | |
3683 | off, | |
3684 | relocation); | |
252b5132 | 3685 | |
7fb9f789 | 3686 | *off_ptr |= 1; |
252b5132 RH |
3687 | } |
3688 | } | |
3689 | ||
cf869cce NC |
3690 | /* We don't use elf_m68k_reloc_got_type in the condition below |
3691 | because this is the only place where difference between | |
3692 | R_68K_GOTx and R_68K_GOTxO relocations matters. */ | |
3693 | if (r_type == R_68K_GOT32O | |
252b5132 | 3694 | || r_type == R_68K_GOT16O |
cf869cce NC |
3695 | || r_type == R_68K_GOT8O |
3696 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_GD32 | |
3697 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_LDM32 | |
3698 | || elf_m68k_reloc_got_type (r_type) == R_68K_TLS_IE32) | |
252b5132 | 3699 | { |
7fb9f789 NC |
3700 | /* GOT pointer is adjusted to point to the start/middle |
3701 | of local GOT. Adjust the offset accordingly. */ | |
3702 | BFD_ASSERT (elf_m68k_hash_table (info)->use_neg_got_offsets_p | |
3703 | || off >= got->offset); | |
3704 | ||
3705 | if (elf_m68k_hash_table (info)->local_gp_p) | |
3706 | relocation = off - got->offset; | |
3707 | else | |
3708 | { | |
3709 | BFD_ASSERT (got->offset == 0); | |
3710 | relocation = sgot->output_offset + off; | |
3711 | } | |
3712 | ||
252b5132 RH |
3713 | /* This relocation does not use the addend. */ |
3714 | rel->r_addend = 0; | |
3715 | } | |
3716 | else | |
7fb9f789 NC |
3717 | relocation = (sgot->output_section->vma + sgot->output_offset |
3718 | + off); | |
252b5132 RH |
3719 | } |
3720 | break; | |
3721 | ||
cf869cce NC |
3722 | case R_68K_TLS_LDO32: |
3723 | case R_68K_TLS_LDO16: | |
3724 | case R_68K_TLS_LDO8: | |
3725 | relocation -= dtpoff_base (info); | |
3726 | break; | |
3727 | ||
3728 | case R_68K_TLS_LE32: | |
3729 | case R_68K_TLS_LE16: | |
3730 | case R_68K_TLS_LE8: | |
3cbc1e5e | 3731 | if (bfd_link_dll (info)) |
cf869cce | 3732 | { |
4eca0228 | 3733 | _bfd_error_handler |
695344c0 | 3734 | /* xgettext:c-format */ |
2dcf00ce AM |
3735 | (_("%pB(%pA+%#" PRIx64 "): " |
3736 | "%s relocation not permitted in shared object"), | |
3737 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
3738 | howto->name); | |
cf869cce NC |
3739 | |
3740 | return FALSE; | |
3741 | } | |
3742 | else | |
325e58c7 | 3743 | relocation -= tpoff_base (info); |
cf869cce NC |
3744 | |
3745 | break; | |
3746 | ||
252b5132 RH |
3747 | case R_68K_PLT8: |
3748 | case R_68K_PLT16: | |
3749 | case R_68K_PLT32: | |
3750 | /* Relocation is to the entry for this symbol in the | |
3751 | procedure linkage table. */ | |
3752 | ||
3753 | /* Resolve a PLTxx reloc against a local symbol directly, | |
3754 | without using the procedure linkage table. */ | |
3755 | if (h == NULL) | |
3756 | break; | |
3757 | ||
3758 | if (h->plt.offset == (bfd_vma) -1 | |
3759 | || !elf_hash_table (info)->dynamic_sections_created) | |
3760 | { | |
3761 | /* We didn't make a PLT entry for this symbol. This | |
3762 | happens when statically linking PIC code, or when | |
3763 | using -Bsymbolic. */ | |
3764 | break; | |
3765 | } | |
3766 | ||
ce558b89 AM |
3767 | splt = elf_hash_table (info)->splt; |
3768 | BFD_ASSERT (splt != NULL); | |
252b5132 RH |
3769 | |
3770 | relocation = (splt->output_section->vma | |
3771 | + splt->output_offset | |
3772 | + h->plt.offset); | |
44f745a6 | 3773 | unresolved_reloc = FALSE; |
252b5132 RH |
3774 | break; |
3775 | ||
3776 | case R_68K_PLT8O: | |
3777 | case R_68K_PLT16O: | |
3778 | case R_68K_PLT32O: | |
3779 | /* Relocation is the offset of the entry for this symbol in | |
3780 | the procedure linkage table. */ | |
3781 | BFD_ASSERT (h != NULL && h->plt.offset != (bfd_vma) -1); | |
3782 | ||
ce558b89 AM |
3783 | splt = elf_hash_table (info)->splt; |
3784 | BFD_ASSERT (splt != NULL); | |
252b5132 RH |
3785 | |
3786 | relocation = h->plt.offset; | |
44f745a6 | 3787 | unresolved_reloc = FALSE; |
252b5132 RH |
3788 | |
3789 | /* This relocation does not use the addend. */ | |
3790 | rel->r_addend = 0; | |
3791 | ||
3792 | break; | |
3793 | ||
252b5132 RH |
3794 | case R_68K_8: |
3795 | case R_68K_16: | |
3796 | case R_68K_32: | |
2516a1ee AS |
3797 | case R_68K_PC8: |
3798 | case R_68K_PC16: | |
3799 | case R_68K_PC32: | |
0e1862bb | 3800 | if (bfd_link_pic (info) |
cf35638d | 3801 | && r_symndx != STN_UNDEF |
252b5132 | 3802 | && (input_section->flags & SEC_ALLOC) != 0 |
d2ff124f | 3803 | && (h == NULL |
5056ba1d L |
3804 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
3805 | && !resolved_to_zero) | |
d2ff124f | 3806 | || h->root.type != bfd_link_hash_undefweak) |
252b5132 RH |
3807 | && ((r_type != R_68K_PC8 |
3808 | && r_type != R_68K_PC16 | |
3809 | && r_type != R_68K_PC32) | |
2516a1ee | 3810 | || !SYMBOL_CALLS_LOCAL (info, h))) |
252b5132 RH |
3811 | { |
3812 | Elf_Internal_Rela outrel; | |
947216bf | 3813 | bfd_byte *loc; |
b34976b6 | 3814 | bfd_boolean skip, relocate; |
252b5132 RH |
3815 | |
3816 | /* When generating a shared object, these relocations | |
3817 | are copied into the output file to be resolved at run | |
3818 | time. */ | |
3819 | ||
b34976b6 AM |
3820 | skip = FALSE; |
3821 | relocate = FALSE; | |
252b5132 | 3822 | |
c629eae0 JJ |
3823 | outrel.r_offset = |
3824 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3825 | rel->r_offset); | |
3826 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3827 | skip = TRUE; |
0bb2d96a | 3828 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3829 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3830 | outrel.r_offset += (input_section->output_section->vma |
3831 | + input_section->output_offset); | |
3832 | ||
3833 | if (skip) | |
0bb2d96a | 3834 | memset (&outrel, 0, sizeof outrel); |
252b5132 | 3835 | else if (h != NULL |
d2ff124f AS |
3836 | && h->dynindx != -1 |
3837 | && (r_type == R_68K_PC8 | |
3838 | || r_type == R_68K_PC16 | |
3839 | || r_type == R_68K_PC32 | |
0e1862bb | 3840 | || !bfd_link_pic (info) |
a496fbc8 | 3841 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 3842 | || !h->def_regular)) |
252b5132 | 3843 | { |
252b5132 | 3844 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
d2ff124f | 3845 | outrel.r_addend = rel->r_addend; |
252b5132 RH |
3846 | } |
3847 | else | |
3848 | { | |
d2ff124f | 3849 | /* This symbol is local, or marked to become local. */ |
74541ad4 AM |
3850 | outrel.r_addend = relocation + rel->r_addend; |
3851 | ||
252b5132 RH |
3852 | if (r_type == R_68K_32) |
3853 | { | |
b34976b6 | 3854 | relocate = TRUE; |
252b5132 | 3855 | outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE); |
252b5132 RH |
3856 | } |
3857 | else | |
3858 | { | |
3859 | long indx; | |
3860 | ||
8517fae7 | 3861 | if (bfd_is_abs_section (sec)) |
252b5132 RH |
3862 | indx = 0; |
3863 | else if (sec == NULL || sec->owner == NULL) | |
3864 | { | |
3865 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 3866 | return FALSE; |
252b5132 RH |
3867 | } |
3868 | else | |
3869 | { | |
3870 | asection *osec; | |
3871 | ||
74541ad4 AM |
3872 | /* We are turning this relocation into one |
3873 | against a section symbol. It would be | |
3874 | proper to subtract the symbol's value, | |
3875 | osec->vma, from the emitted reloc addend, | |
3876 | but ld.so expects buggy relocs. */ | |
252b5132 RH |
3877 | osec = sec->output_section; |
3878 | indx = elf_section_data (osec)->dynindx; | |
74541ad4 AM |
3879 | if (indx == 0) |
3880 | { | |
3881 | struct elf_link_hash_table *htab; | |
3882 | htab = elf_hash_table (info); | |
3883 | osec = htab->text_index_section; | |
3884 | indx = elf_section_data (osec)->dynindx; | |
3885 | } | |
3886 | BFD_ASSERT (indx != 0); | |
252b5132 RH |
3887 | } |
3888 | ||
252b5132 | 3889 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
252b5132 RH |
3890 | } |
3891 | } | |
3892 | ||
d2ff124f AS |
3893 | sreloc = elf_section_data (input_section)->sreloc; |
3894 | if (sreloc == NULL) | |
3895 | abort (); | |
3896 | ||
947216bf AM |
3897 | loc = sreloc->contents; |
3898 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); | |
3899 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
252b5132 RH |
3900 | |
3901 | /* This reloc will be computed at runtime, so there's no | |
07d6d2b8 AM |
3902 | need to do anything now, except for R_68K_32 |
3903 | relocations that have been turned into | |
3904 | R_68K_RELATIVE. */ | |
252b5132 RH |
3905 | if (!relocate) |
3906 | continue; | |
3907 | } | |
3908 | ||
3909 | break; | |
3910 | ||
3911 | case R_68K_GNU_VTINHERIT: | |
3912 | case R_68K_GNU_VTENTRY: | |
3913 | /* These are no-ops in the end. */ | |
3914 | continue; | |
3915 | ||
3916 | default: | |
3917 | break; | |
3918 | } | |
3919 | ||
44f745a6 AS |
3920 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3921 | because such sections are not SEC_ALLOC and thus ld.so will | |
3922 | not process them. */ | |
3923 | if (unresolved_reloc | |
3924 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
1d5316ab AM |
3925 | && h->def_dynamic) |
3926 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3927 | rel->r_offset) != (bfd_vma) -1) | |
44f745a6 | 3928 | { |
4eca0228 | 3929 | _bfd_error_handler |
695344c0 | 3930 | /* xgettext:c-format */ |
2dcf00ce AM |
3931 | (_("%pB(%pA+%#" PRIx64 "): " |
3932 | "unresolvable %s relocation against symbol `%s'"), | |
d003868e AM |
3933 | input_bfd, |
3934 | input_section, | |
2dcf00ce | 3935 | (uint64_t) rel->r_offset, |
843fe662 | 3936 | howto->name, |
44f745a6 AS |
3937 | h->root.root.string); |
3938 | return FALSE; | |
3939 | } | |
3940 | ||
cf35638d | 3941 | if (r_symndx != STN_UNDEF |
cf869cce NC |
3942 | && r_type != R_68K_NONE |
3943 | && (h == NULL | |
3944 | || h->root.type == bfd_link_hash_defined | |
3945 | || h->root.type == bfd_link_hash_defweak)) | |
3946 | { | |
3947 | char sym_type; | |
3948 | ||
3949 | sym_type = (sym != NULL) ? ELF32_ST_TYPE (sym->st_info) : h->type; | |
3950 | ||
3951 | if (elf_m68k_reloc_tls_p (r_type) != (sym_type == STT_TLS)) | |
3952 | { | |
3953 | const char *name; | |
3954 | ||
3955 | if (h != NULL) | |
3956 | name = h->root.root.string; | |
3957 | else | |
3958 | { | |
3959 | name = (bfd_elf_string_from_elf_section | |
3960 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3961 | if (name == NULL || *name == '\0') | |
fd361982 | 3962 | name = bfd_section_name (sec); |
cf869cce NC |
3963 | } |
3964 | ||
4eca0228 | 3965 | _bfd_error_handler |
cf869cce | 3966 | ((sym_type == STT_TLS |
695344c0 | 3967 | /* xgettext:c-format */ |
2dcf00ce | 3968 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 3969 | /* xgettext:c-format */ |
2dcf00ce | 3970 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
cf869cce NC |
3971 | input_bfd, |
3972 | input_section, | |
2dcf00ce | 3973 | (uint64_t) rel->r_offset, |
cf869cce NC |
3974 | howto->name, |
3975 | name); | |
3976 | } | |
3977 | } | |
3978 | ||
252b5132 RH |
3979 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3980 | contents, rel->r_offset, | |
3981 | relocation, rel->r_addend); | |
3982 | ||
3983 | if (r != bfd_reloc_ok) | |
3984 | { | |
44f745a6 AS |
3985 | const char *name; |
3986 | ||
3987 | if (h != NULL) | |
3988 | name = h->root.root.string; | |
3989 | else | |
252b5132 | 3990 | { |
44f745a6 AS |
3991 | name = bfd_elf_string_from_elf_section (input_bfd, |
3992 | symtab_hdr->sh_link, | |
3993 | sym->st_name); | |
3994 | if (name == NULL) | |
3995 | return FALSE; | |
3996 | if (*name == '\0') | |
fd361982 | 3997 | name = bfd_section_name (sec); |
44f745a6 | 3998 | } |
252b5132 | 3999 | |
44f745a6 | 4000 | if (r == bfd_reloc_overflow) |
1a72702b AM |
4001 | (*info->callbacks->reloc_overflow) |
4002 | (info, (h ? &h->root : NULL), name, howto->name, | |
4003 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
44f745a6 AS |
4004 | else |
4005 | { | |
4eca0228 | 4006 | _bfd_error_handler |
695344c0 | 4007 | /* xgettext:c-format */ |
2dcf00ce | 4008 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 4009 | input_bfd, input_section, |
2dcf00ce | 4010 | (uint64_t) rel->r_offset, name, (int) r); |
44f745a6 | 4011 | return FALSE; |
252b5132 RH |
4012 | } |
4013 | } | |
4014 | } | |
4015 | ||
b34976b6 | 4016 | return TRUE; |
252b5132 RH |
4017 | } |
4018 | ||
cc3e26be RS |
4019 | /* Install an M_68K_PC32 relocation against VALUE at offset OFFSET |
4020 | into section SEC. */ | |
4021 | ||
4022 | static void | |
4023 | elf_m68k_install_pc32 (asection *sec, bfd_vma offset, bfd_vma value) | |
4024 | { | |
4025 | /* Make VALUE PC-relative. */ | |
4026 | value -= sec->output_section->vma + offset; | |
4027 | ||
4028 | /* Apply any in-place addend. */ | |
4029 | value += bfd_get_32 (sec->owner, sec->contents + offset); | |
4030 | ||
4031 | bfd_put_32 (sec->owner, value, sec->contents + offset); | |
4032 | } | |
4033 | ||
252b5132 RH |
4034 | /* Finish up dynamic symbol handling. We set the contents of various |
4035 | dynamic sections here. */ | |
4036 | ||
b34976b6 | 4037 | static bfd_boolean |
2c3fc389 NC |
4038 | elf_m68k_finish_dynamic_symbol (bfd *output_bfd, |
4039 | struct bfd_link_info *info, | |
4040 | struct elf_link_hash_entry *h, | |
4041 | Elf_Internal_Sym *sym) | |
252b5132 RH |
4042 | { |
4043 | bfd *dynobj; | |
4044 | ||
4045 | dynobj = elf_hash_table (info)->dynobj; | |
4046 | ||
4047 | if (h->plt.offset != (bfd_vma) -1) | |
4048 | { | |
cc3e26be | 4049 | const struct elf_m68k_plt_info *plt_info; |
252b5132 RH |
4050 | asection *splt; |
4051 | asection *sgot; | |
4052 | asection *srela; | |
4053 | bfd_vma plt_index; | |
4054 | bfd_vma got_offset; | |
4055 | Elf_Internal_Rela rela; | |
947216bf | 4056 | bfd_byte *loc; |
252b5132 RH |
4057 | |
4058 | /* This symbol has an entry in the procedure linkage table. Set | |
4059 | it up. */ | |
4060 | ||
4061 | BFD_ASSERT (h->dynindx != -1); | |
4062 | ||
cc3e26be | 4063 | plt_info = elf_m68k_hash_table (info)->plt_info; |
ce558b89 AM |
4064 | splt = elf_hash_table (info)->splt; |
4065 | sgot = elf_hash_table (info)->sgotplt; | |
4066 | srela = elf_hash_table (info)->srelplt; | |
252b5132 RH |
4067 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
4068 | ||
4069 | /* Get the index in the procedure linkage table which | |
4070 | corresponds to this symbol. This is the index of this symbol | |
4071 | in all the symbols for which we are making plt entries. The | |
4072 | first entry in the procedure linkage table is reserved. */ | |
cc3e26be | 4073 | plt_index = (h->plt.offset / plt_info->size) - 1; |
252b5132 RH |
4074 | |
4075 | /* Get the offset into the .got table of the entry that | |
4076 | corresponds to this function. Each .got entry is 4 bytes. | |
4077 | The first three are reserved. */ | |
4078 | got_offset = (plt_index + 3) * 4; | |
4079 | ||
cc3e26be RS |
4080 | memcpy (splt->contents + h->plt.offset, |
4081 | plt_info->symbol_entry, | |
4082 | plt_info->size); | |
4083 | ||
4084 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.got, | |
4085 | (sgot->output_section->vma | |
4086 | + sgot->output_offset | |
4087 | + got_offset)); | |
252b5132 RH |
4088 | |
4089 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), | |
cc3e26be RS |
4090 | splt->contents |
4091 | + h->plt.offset | |
4092 | + plt_info->symbol_resolve_entry + 2); | |
4093 | ||
4094 | elf_m68k_install_pc32 (splt, h->plt.offset + plt_info->symbol_relocs.plt, | |
4095 | splt->output_section->vma); | |
252b5132 RH |
4096 | |
4097 | /* Fill in the entry in the global offset table. */ | |
4098 | bfd_put_32 (output_bfd, | |
4099 | (splt->output_section->vma | |
4100 | + splt->output_offset | |
4101 | + h->plt.offset | |
cc3e26be | 4102 | + plt_info->symbol_resolve_entry), |
252b5132 RH |
4103 | sgot->contents + got_offset); |
4104 | ||
4105 | /* Fill in the entry in the .rela.plt section. */ | |
4106 | rela.r_offset = (sgot->output_section->vma | |
4107 | + sgot->output_offset | |
4108 | + got_offset); | |
4109 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT); | |
4110 | rela.r_addend = 0; | |
947216bf AM |
4111 | loc = srela->contents + plt_index * sizeof (Elf32_External_Rela); |
4112 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 | 4113 | |
f5385ebf | 4114 | if (!h->def_regular) |
252b5132 RH |
4115 | { |
4116 | /* Mark the symbol as undefined, rather than as defined in | |
4117 | the .plt section. Leave the value alone. */ | |
4118 | sym->st_shndx = SHN_UNDEF; | |
4119 | } | |
4120 | } | |
4121 | ||
7fb9f789 | 4122 | if (elf_m68k_hash_entry (h)->glist != NULL) |
252b5132 RH |
4123 | { |
4124 | asection *sgot; | |
4125 | asection *srela; | |
7fb9f789 | 4126 | struct elf_m68k_got_entry *got_entry; |
252b5132 RH |
4127 | |
4128 | /* This symbol has an entry in the global offset table. Set it | |
4129 | up. */ | |
4130 | ||
ce558b89 AM |
4131 | sgot = elf_hash_table (info)->sgot; |
4132 | srela = elf_hash_table (info)->srelgot; | |
252b5132 RH |
4133 | BFD_ASSERT (sgot != NULL && srela != NULL); |
4134 | ||
7fb9f789 NC |
4135 | got_entry = elf_m68k_hash_entry (h)->glist; |
4136 | ||
4137 | while (got_entry != NULL) | |
252b5132 | 4138 | { |
325e58c7 | 4139 | enum elf_m68k_reloc_type r_type; |
cf869cce NC |
4140 | bfd_vma got_entry_offset; |
4141 | ||
325e58c7 | 4142 | r_type = got_entry->key_.type; |
cf869cce | 4143 | got_entry_offset = got_entry->u.s2.offset &~ (bfd_vma) 1; |
7fb9f789 | 4144 | |
7fb9f789 NC |
4145 | /* If this is a -Bsymbolic link, and the symbol is defined |
4146 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
4147 | the symbol was forced to be local because of a version file. | |
cf869cce | 4148 | The entry in the global offset table already have been |
7fb9f789 | 4149 | initialized in the relocate_section function. */ |
0e1862bb | 4150 | if (bfd_link_pic (info) |
2516a1ee | 4151 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7fb9f789 | 4152 | { |
325e58c7 | 4153 | bfd_vma relocation; |
cf869cce | 4154 | |
325e58c7 NC |
4155 | relocation = bfd_get_signed_32 (output_bfd, |
4156 | (sgot->contents | |
4157 | + got_entry_offset)); | |
4158 | ||
4159 | /* Undo TP bias. */ | |
4160 | switch (elf_m68k_reloc_got_type (r_type)) | |
cf869cce NC |
4161 | { |
4162 | case R_68K_GOT32O: | |
325e58c7 | 4163 | case R_68K_TLS_LDM32: |
cf869cce NC |
4164 | break; |
4165 | ||
4166 | case R_68K_TLS_GD32: | |
93b3ac75 AS |
4167 | /* The value for this relocation is actually put in |
4168 | the second GOT slot. */ | |
4169 | relocation = bfd_get_signed_32 (output_bfd, | |
4170 | (sgot->contents | |
4171 | + got_entry_offset + 4)); | |
325e58c7 | 4172 | relocation += dtpoff_base (info); |
cf869cce NC |
4173 | break; |
4174 | ||
4175 | case R_68K_TLS_IE32: | |
325e58c7 | 4176 | relocation += tpoff_base (info); |
cf869cce NC |
4177 | break; |
4178 | ||
4179 | default: | |
4180 | BFD_ASSERT (FALSE); | |
cf869cce NC |
4181 | } |
4182 | ||
325e58c7 NC |
4183 | elf_m68k_init_got_entry_local_shared (info, |
4184 | output_bfd, | |
4185 | r_type, | |
4186 | sgot, | |
4187 | got_entry_offset, | |
4188 | relocation, | |
4189 | srela); | |
7fb9f789 NC |
4190 | } |
4191 | else | |
4192 | { | |
325e58c7 NC |
4193 | Elf_Internal_Rela rela; |
4194 | ||
cf869cce NC |
4195 | /* Put zeros to GOT slots that will be initialized |
4196 | at run-time. */ | |
4197 | { | |
4198 | bfd_vma n_slots; | |
4199 | ||
4200 | n_slots = elf_m68k_reloc_got_n_slots (got_entry->key_.type); | |
4201 | while (n_slots--) | |
4202 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
4203 | (sgot->contents + got_entry_offset | |
4204 | + 4 * n_slots)); | |
4205 | } | |
4206 | ||
7fb9f789 | 4207 | rela.r_addend = 0; |
325e58c7 NC |
4208 | rela.r_offset = (sgot->output_section->vma |
4209 | + sgot->output_offset | |
4210 | + got_entry_offset); | |
252b5132 | 4211 | |
325e58c7 | 4212 | switch (elf_m68k_reloc_got_type (r_type)) |
cf869cce NC |
4213 | { |
4214 | case R_68K_GOT32O: | |
4215 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT); | |
4216 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4217 | break; | |
4218 | ||
4219 | case R_68K_TLS_GD32: | |
4220 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPMOD32); | |
4221 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4222 | ||
4223 | rela.r_offset += 4; | |
4224 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_DTPREL32); | |
4225 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4226 | break; | |
4227 | ||
4228 | case R_68K_TLS_IE32: | |
4229 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_TLS_TPREL32); | |
4230 | elf_m68k_install_rela (output_bfd, srela, &rela); | |
4231 | break; | |
4232 | ||
4233 | default: | |
4234 | BFD_ASSERT (FALSE); | |
4235 | break; | |
4236 | } | |
4237 | } | |
7fb9f789 NC |
4238 | |
4239 | got_entry = got_entry->u.s2.next; | |
4240 | } | |
252b5132 RH |
4241 | } |
4242 | ||
f5385ebf | 4243 | if (h->needs_copy) |
252b5132 RH |
4244 | { |
4245 | asection *s; | |
4246 | Elf_Internal_Rela rela; | |
947216bf | 4247 | bfd_byte *loc; |
252b5132 RH |
4248 | |
4249 | /* This symbol needs a copy reloc. Set it up. */ | |
4250 | ||
4251 | BFD_ASSERT (h->dynindx != -1 | |
4252 | && (h->root.type == bfd_link_hash_defined | |
4253 | || h->root.type == bfd_link_hash_defweak)); | |
4254 | ||
3d4d4302 | 4255 | s = bfd_get_linker_section (dynobj, ".rela.bss"); |
252b5132 RH |
4256 | BFD_ASSERT (s != NULL); |
4257 | ||
4258 | rela.r_offset = (h->root.u.def.value | |
4259 | + h->root.u.def.section->output_section->vma | |
4260 | + h->root.u.def.section->output_offset); | |
4261 | rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY); | |
4262 | rela.r_addend = 0; | |
947216bf AM |
4263 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); |
4264 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
252b5132 RH |
4265 | } |
4266 | ||
b34976b6 | 4267 | return TRUE; |
252b5132 RH |
4268 | } |
4269 | ||
4270 | /* Finish up the dynamic sections. */ | |
4271 | ||
b34976b6 | 4272 | static bfd_boolean |
2c3fc389 | 4273 | elf_m68k_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
252b5132 RH |
4274 | { |
4275 | bfd *dynobj; | |
4276 | asection *sgot; | |
4277 | asection *sdyn; | |
4278 | ||
4279 | dynobj = elf_hash_table (info)->dynobj; | |
4280 | ||
ce558b89 | 4281 | sgot = elf_hash_table (info)->sgotplt; |
252b5132 | 4282 | BFD_ASSERT (sgot != NULL); |
3d4d4302 | 4283 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
4284 | |
4285 | if (elf_hash_table (info)->dynamic_sections_created) | |
4286 | { | |
4287 | asection *splt; | |
4288 | Elf32_External_Dyn *dyncon, *dynconend; | |
4289 | ||
ce558b89 | 4290 | splt = elf_hash_table (info)->splt; |
252b5132 RH |
4291 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
4292 | ||
4293 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4294 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4295 | for (; dyncon < dynconend; dyncon++) |
4296 | { | |
4297 | Elf_Internal_Dyn dyn; | |
252b5132 RH |
4298 | asection *s; |
4299 | ||
4300 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4301 | ||
4302 | switch (dyn.d_tag) | |
4303 | { | |
4304 | default: | |
4305 | break; | |
4306 | ||
4307 | case DT_PLTGOT: | |
ce558b89 | 4308 | s = elf_hash_table (info)->sgotplt; |
252b5132 RH |
4309 | goto get_vma; |
4310 | case DT_JMPREL: | |
ce558b89 | 4311 | s = elf_hash_table (info)->srelplt; |
252b5132 | 4312 | get_vma: |
4ade44b7 | 4313 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
252b5132 RH |
4314 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4315 | break; | |
4316 | ||
4317 | case DT_PLTRELSZ: | |
ce558b89 | 4318 | s = elf_hash_table (info)->srelplt; |
eea6121a | 4319 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4320 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
4321 | break; | |
252b5132 RH |
4322 | } |
4323 | } | |
4324 | ||
4325 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 4326 | if (splt->size > 0) |
252b5132 | 4327 | { |
cc3e26be RS |
4328 | const struct elf_m68k_plt_info *plt_info; |
4329 | ||
4330 | plt_info = elf_m68k_hash_table (info)->plt_info; | |
4331 | memcpy (splt->contents, plt_info->plt0_entry, plt_info->size); | |
4332 | ||
4333 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got4, | |
4334 | (sgot->output_section->vma | |
4335 | + sgot->output_offset | |
4336 | + 4)); | |
4337 | ||
4338 | elf_m68k_install_pc32 (splt, plt_info->plt0_relocs.got8, | |
4339 | (sgot->output_section->vma | |
4340 | + sgot->output_offset | |
4341 | + 8)); | |
4342 | ||
4343 | elf_section_data (splt->output_section)->this_hdr.sh_entsize | |
4344 | = plt_info->size; | |
252b5132 | 4345 | } |
252b5132 RH |
4346 | } |
4347 | ||
4348 | /* Fill in the first three entries in the global offset table. */ | |
eea6121a | 4349 | if (sgot->size > 0) |
252b5132 RH |
4350 | { |
4351 | if (sdyn == NULL) | |
4352 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
4353 | else | |
4354 | bfd_put_32 (output_bfd, | |
4355 | sdyn->output_section->vma + sdyn->output_offset, | |
4356 | sgot->contents); | |
4357 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
4358 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
4359 | } | |
4360 | ||
4361 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
4362 | ||
b34976b6 | 4363 | return TRUE; |
252b5132 RH |
4364 | } |
4365 | ||
0752970e NC |
4366 | /* Given a .data section and a .emreloc in-memory section, store |
4367 | relocation information into the .emreloc section which can be | |
4368 | used at runtime to relocate the section. This is called by the | |
4369 | linker when the --embedded-relocs switch is used. This is called | |
4370 | after the add_symbols entry point has been called for all the | |
4371 | objects, and before the final_link entry point is called. */ | |
4372 | ||
b34976b6 | 4373 | bfd_boolean |
e6c7cdec TS |
4374 | bfd_m68k_elf32_create_embedded_relocs (bfd *abfd, struct bfd_link_info *info, |
4375 | asection *datasec, asection *relsec, | |
4376 | char **errmsg) | |
0752970e NC |
4377 | { |
4378 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc AM |
4379 | Elf_Internal_Sym *isymbuf = NULL; |
4380 | Elf_Internal_Rela *internal_relocs = NULL; | |
0752970e NC |
4381 | Elf_Internal_Rela *irel, *irelend; |
4382 | bfd_byte *p; | |
dc810e39 | 4383 | bfd_size_type amt; |
0752970e | 4384 | |
0e1862bb | 4385 | BFD_ASSERT (! bfd_link_relocatable (info)); |
0752970e NC |
4386 | |
4387 | *errmsg = NULL; | |
4388 | ||
4389 | if (datasec->reloc_count == 0) | |
b34976b6 | 4390 | return TRUE; |
0752970e NC |
4391 | |
4392 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
9ad5cbcf | 4393 | |
0752970e | 4394 | /* Get a copy of the native relocations. */ |
45d6a902 | 4395 | internal_relocs = (_bfd_elf_link_read_relocs |
2c3fc389 | 4396 | (abfd, datasec, NULL, (Elf_Internal_Rela *) NULL, |
0752970e NC |
4397 | info->keep_memory)); |
4398 | if (internal_relocs == NULL) | |
4399 | goto error_return; | |
0752970e | 4400 | |
dc810e39 AM |
4401 | amt = (bfd_size_type) datasec->reloc_count * 12; |
4402 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); | |
0752970e NC |
4403 | if (relsec->contents == NULL) |
4404 | goto error_return; | |
4405 | ||
4406 | p = relsec->contents; | |
4407 | ||
4408 | irelend = internal_relocs + datasec->reloc_count; | |
4409 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) | |
4410 | { | |
4411 | asection *targetsec; | |
4412 | ||
4413 | /* We are going to write a four byte longword into the runtime | |
4414 | reloc section. The longword will be the address in the data | |
4415 | section which must be relocated. It is followed by the name | |
4416 | of the target section NUL-padded or truncated to 8 | |
4417 | characters. */ | |
4418 | ||
4419 | /* We can only relocate absolute longword relocs at run time. */ | |
4420 | if (ELF32_R_TYPE (irel->r_info) != (int) R_68K_32) | |
4421 | { | |
0aa13fee | 4422 | *errmsg = _("unsupported relocation type"); |
0752970e NC |
4423 | bfd_set_error (bfd_error_bad_value); |
4424 | goto error_return; | |
4425 | } | |
4426 | ||
4427 | /* Get the target section referred to by the reloc. */ | |
4428 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
4429 | { | |
0752970e | 4430 | /* A local symbol. */ |
6cdc0ccc AM |
4431 | Elf_Internal_Sym *isym; |
4432 | ||
4433 | /* Read this BFD's local symbols if we haven't done so already. */ | |
4434 | if (isymbuf == NULL) | |
4435 | { | |
4436 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4437 | if (isymbuf == NULL) | |
4438 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
4439 | symtab_hdr->sh_info, 0, | |
4440 | NULL, NULL, NULL); | |
4441 | if (isymbuf == NULL) | |
4442 | goto error_return; | |
4443 | } | |
0752970e | 4444 | |
6cdc0ccc AM |
4445 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
4446 | targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
0752970e NC |
4447 | } |
4448 | else | |
4449 | { | |
4450 | unsigned long indx; | |
4451 | struct elf_link_hash_entry *h; | |
4452 | ||
4453 | /* An external symbol. */ | |
4454 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
4455 | h = elf_sym_hashes (abfd)[indx]; | |
4456 | BFD_ASSERT (h != NULL); | |
4457 | if (h->root.type == bfd_link_hash_defined | |
4458 | || h->root.type == bfd_link_hash_defweak) | |
4459 | targetsec = h->root.u.def.section; | |
4460 | else | |
4461 | targetsec = NULL; | |
4462 | } | |
4463 | ||
4464 | bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); | |
4465 | memset (p + 4, 0, 8); | |
4466 | if (targetsec != NULL) | |
f075ee0c | 4467 | strncpy ((char *) p + 4, targetsec->output_section->name, 8); |
0752970e | 4468 | } |
c3668558 | 4469 | |
c9594989 | 4470 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
6cdc0ccc | 4471 | free (isymbuf); |
c9594989 | 4472 | if (elf_section_data (datasec)->relocs != internal_relocs) |
6cdc0ccc | 4473 | free (internal_relocs); |
b34976b6 | 4474 | return TRUE; |
0752970e | 4475 | |
dc1e8a47 | 4476 | error_return: |
c9594989 | 4477 | if (symtab_hdr->contents != (unsigned char *) isymbuf) |
6cdc0ccc | 4478 | free (isymbuf); |
c9594989 | 4479 | if (elf_section_data (datasec)->relocs != internal_relocs) |
6cdc0ccc | 4480 | free (internal_relocs); |
b34976b6 | 4481 | return FALSE; |
0752970e NC |
4482 | } |
4483 | ||
7fb9f789 NC |
4484 | /* Set target options. */ |
4485 | ||
4486 | void | |
4487 | bfd_elf_m68k_set_target_options (struct bfd_link_info *info, int got_handling) | |
4488 | { | |
4489 | struct elf_m68k_link_hash_table *htab; | |
b1345da3 MR |
4490 | bfd_boolean use_neg_got_offsets_p; |
4491 | bfd_boolean allow_multigot_p; | |
4492 | bfd_boolean local_gp_p; | |
7fb9f789 NC |
4493 | |
4494 | switch (got_handling) | |
4495 | { | |
4496 | case 0: | |
4497 | /* --got=single. */ | |
b1345da3 MR |
4498 | local_gp_p = FALSE; |
4499 | use_neg_got_offsets_p = FALSE; | |
4500 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4501 | break; |
4502 | ||
4503 | case 1: | |
4504 | /* --got=negative. */ | |
b1345da3 MR |
4505 | local_gp_p = TRUE; |
4506 | use_neg_got_offsets_p = TRUE; | |
4507 | allow_multigot_p = FALSE; | |
7fb9f789 NC |
4508 | break; |
4509 | ||
4510 | case 2: | |
4511 | /* --got=multigot. */ | |
b1345da3 MR |
4512 | local_gp_p = TRUE; |
4513 | use_neg_got_offsets_p = TRUE; | |
4514 | allow_multigot_p = TRUE; | |
7fb9f789 NC |
4515 | break; |
4516 | ||
4517 | default: | |
4518 | BFD_ASSERT (FALSE); | |
b1345da3 MR |
4519 | return; |
4520 | } | |
4521 | ||
4522 | htab = elf_m68k_hash_table (info); | |
4523 | if (htab != NULL) | |
4524 | { | |
4525 | htab->local_gp_p = local_gp_p; | |
4526 | htab->use_neg_got_offsets_p = use_neg_got_offsets_p; | |
4527 | htab->allow_multigot_p = allow_multigot_p; | |
7fb9f789 NC |
4528 | } |
4529 | } | |
4530 | ||
aa91b392 | 4531 | static enum elf_reloc_type_class |
7e612e98 AM |
4532 | elf32_m68k_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4533 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4534 | const Elf_Internal_Rela *rela) | |
aa91b392 | 4535 | { |
f51e552e | 4536 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
aa91b392 AS |
4537 | { |
4538 | case R_68K_RELATIVE: | |
4539 | return reloc_class_relative; | |
4540 | case R_68K_JMP_SLOT: | |
4541 | return reloc_class_plt; | |
4542 | case R_68K_COPY: | |
4543 | return reloc_class_copy; | |
4544 | default: | |
4545 | return reloc_class_normal; | |
4546 | } | |
4547 | } | |
4548 | ||
1715e0e3 AS |
4549 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4550 | or (bfd_vma) -1 if it should not be included. */ | |
4551 | ||
4552 | static bfd_vma | |
4553 | elf_m68k_plt_sym_val (bfd_vma i, const asection *plt, | |
4554 | const arelent *rel ATTRIBUTE_UNUSED) | |
4555 | { | |
cc3e26be | 4556 | return plt->vma + (i + 1) * elf_m68k_get_plt_info (plt->owner)->size; |
1715e0e3 AS |
4557 | } |
4558 | ||
8bbeae90 AS |
4559 | /* Support for core dump NOTE sections. */ |
4560 | ||
4561 | static bfd_boolean | |
4562 | elf_m68k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
4563 | { | |
4564 | int offset; | |
4565 | size_t size; | |
4566 | ||
4567 | switch (note->descsz) | |
4568 | { | |
4569 | default: | |
4570 | return FALSE; | |
4571 | ||
4572 | case 154: /* Linux/m68k */ | |
4573 | /* pr_cursig */ | |
228e534f | 4574 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
8bbeae90 AS |
4575 | |
4576 | /* pr_pid */ | |
228e534f | 4577 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); |
8bbeae90 AS |
4578 | |
4579 | /* pr_reg */ | |
4580 | offset = 70; | |
4581 | size = 80; | |
4582 | ||
4583 | break; | |
4584 | } | |
4585 | ||
4586 | /* Make a ".reg/999" section. */ | |
4587 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
4588 | size, note->descpos + offset); | |
4589 | } | |
4590 | ||
4591 | static bfd_boolean | |
4592 | elf_m68k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
4593 | { | |
4594 | switch (note->descsz) | |
4595 | { | |
4596 | default: | |
4597 | return FALSE; | |
4598 | ||
4599 | case 124: /* Linux/m68k elf_prpsinfo. */ | |
228e534f | 4600 | elf_tdata (abfd)->core->pid |
8bbeae90 | 4601 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 4602 | elf_tdata (abfd)->core->program |
8bbeae90 | 4603 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 4604 | elf_tdata (abfd)->core->command |
8bbeae90 AS |
4605 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
4606 | } | |
4607 | ||
4608 | /* Note that for some reason, a spurious space is tacked | |
4609 | onto the end of the args in some (at least one anyway) | |
4610 | implementations, so strip it off if it exists. */ | |
4611 | { | |
228e534f | 4612 | char *command = elf_tdata (abfd)->core->command; |
8bbeae90 AS |
4613 | int n = strlen (command); |
4614 | ||
4615 | if (n > 0 && command[n - 1] == ' ') | |
4616 | command[n - 1] = '\0'; | |
4617 | } | |
4618 | ||
4619 | return TRUE; | |
4620 | } | |
4621 | ||
6d00b590 | 4622 | #define TARGET_BIG_SYM m68k_elf32_vec |
252b5132 RH |
4623 | #define TARGET_BIG_NAME "elf32-m68k" |
4624 | #define ELF_MACHINE_CODE EM_68K | |
4625 | #define ELF_MAXPAGESIZE 0x2000 | |
4626 | #define elf_backend_create_dynamic_sections \ | |
4627 | _bfd_elf_create_dynamic_sections | |
4628 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4629 | elf_m68k_link_hash_table_create | |
7fb9f789 | 4630 | #define bfd_elf32_bfd_final_link bfd_elf_final_link |
252b5132 RH |
4631 | |
4632 | #define elf_backend_check_relocs elf_m68k_check_relocs | |
cc3e26be RS |
4633 | #define elf_backend_always_size_sections \ |
4634 | elf_m68k_always_size_sections | |
252b5132 RH |
4635 | #define elf_backend_adjust_dynamic_symbol \ |
4636 | elf_m68k_adjust_dynamic_symbol | |
4637 | #define elf_backend_size_dynamic_sections \ | |
4638 | elf_m68k_size_dynamic_sections | |
fc9f1df9 | 4639 | #define elf_backend_final_write_processing elf_m68k_final_write_processing |
74541ad4 | 4640 | #define elf_backend_init_index_section _bfd_elf_init_1_index_section |
252b5132 RH |
4641 | #define elf_backend_relocate_section elf_m68k_relocate_section |
4642 | #define elf_backend_finish_dynamic_symbol \ | |
4643 | elf_m68k_finish_dynamic_symbol | |
4644 | #define elf_backend_finish_dynamic_sections \ | |
4645 | elf_m68k_finish_dynamic_sections | |
4646 | #define elf_backend_gc_mark_hook elf_m68k_gc_mark_hook | |
7fb9f789 | 4647 | #define elf_backend_copy_indirect_symbol elf_m68k_copy_indirect_symbol |
9e1281c7 | 4648 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
07d6d2b8 | 4649 | elf32_m68k_merge_private_bfd_data |
9e1281c7 | 4650 | #define bfd_elf32_bfd_set_private_flags \ |
07d6d2b8 | 4651 | elf32_m68k_set_private_flags |
9e1281c7 | 4652 | #define bfd_elf32_bfd_print_private_bfd_data \ |
07d6d2b8 | 4653 | elf32_m68k_print_private_bfd_data |
aa91b392 | 4654 | #define elf_backend_reloc_type_class elf32_m68k_reloc_type_class |
1715e0e3 | 4655 | #define elf_backend_plt_sym_val elf_m68k_plt_sym_val |
266abb8f | 4656 | #define elf_backend_object_p elf32_m68k_object_p |
8bbeae90 AS |
4657 | #define elf_backend_grok_prstatus elf_m68k_grok_prstatus |
4658 | #define elf_backend_grok_psinfo elf_m68k_grok_psinfo | |
9e1281c7 | 4659 | |
252b5132 | 4660 | #define elf_backend_can_gc_sections 1 |
51b64d56 | 4661 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4662 | #define elf_backend_want_got_plt 1 |
4663 | #define elf_backend_plt_readonly 1 | |
4664 | #define elf_backend_want_plt_sym 0 | |
4665 | #define elf_backend_got_header_size 12 | |
b491616a | 4666 | #define elf_backend_rela_normal 1 |
64f52338 | 4667 | #define elf_backend_dtrel_excludes_plt 1 |
252b5132 | 4668 | |
a2f63b2e MR |
4669 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
4670 | ||
252b5132 | 4671 | #include "elf32-target.h" |